1/* $OpenBSD: parse.y,v 1.554 2008/10/17 12:59:53 henning Exp $ */
2
3/*
4 * Copyright (c) 2001 Markus Friedl. All rights reserved.
5 * Copyright (c) 2001 Daniel Hartmeier. All rights reserved.
6 * Copyright (c) 2001 Theo de Raadt. All rights reserved.
7 * Copyright (c) 2002,2003 Henning Brauer. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29%{
30#include <sys/cdefs.h>
| 1/* $OpenBSD: parse.y,v 1.554 2008/10/17 12:59:53 henning Exp $ */
2
3/*
4 * Copyright (c) 2001 Markus Friedl. All rights reserved.
5 * Copyright (c) 2001 Daniel Hartmeier. All rights reserved.
6 * Copyright (c) 2001 Theo de Raadt. All rights reserved.
7 * Copyright (c) 2002,2003 Henning Brauer. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29%{
30#include <sys/cdefs.h>
|
31__FBSDID("$FreeBSD: head/sbin/pfctl/parse.y 284777 2015-06-24 19:16:41Z eri $");
| 31__FBSDID("$FreeBSD: head/sbin/pfctl/parse.y 287009 2015-08-21 22:02:22Z loos $");
|
32
33#include <sys/types.h>
34#include <sys/socket.h>
35#include <sys/stat.h>
36#ifdef __FreeBSD__
37#include <sys/sysctl.h>
38#endif
39#include <net/if.h>
40#include <netinet/in.h>
41#include <netinet/in_systm.h>
42#include <netinet/ip.h>
43#include <netinet/ip_icmp.h>
44#include <netinet/icmp6.h>
45#include <net/pfvar.h>
46#include <arpa/inet.h>
47#include <net/altq/altq.h>
48#include <net/altq/altq_cbq.h>
| 32
33#include <sys/types.h>
34#include <sys/socket.h>
35#include <sys/stat.h>
36#ifdef __FreeBSD__
37#include <sys/sysctl.h>
38#endif
39#include <net/if.h>
40#include <netinet/in.h>
41#include <netinet/in_systm.h>
42#include <netinet/ip.h>
43#include <netinet/ip_icmp.h>
44#include <netinet/icmp6.h>
45#include <net/pfvar.h>
46#include <arpa/inet.h>
47#include <net/altq/altq.h>
48#include <net/altq/altq_cbq.h>
|
| 49#include <net/altq/altq_codel.h>
|
49#include <net/altq/altq_priq.h>
50#include <net/altq/altq_hfsc.h>
51#include <net/altq/altq_fairq.h>
52
53#include <stdio.h>
54#include <unistd.h>
55#include <stdlib.h>
56#include <netdb.h>
57#include <stdarg.h>
58#include <errno.h>
59#include <string.h>
60#include <ctype.h>
61#include <math.h>
62#include <err.h>
63#include <limits.h>
64#include <pwd.h>
65#include <grp.h>
66#include <md5.h>
67
68#include "pfctl_parser.h"
69#include "pfctl.h"
70
71static struct pfctl *pf = NULL;
72static int debug = 0;
73static int rulestate = 0;
74static u_int16_t returnicmpdefault =
75 (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
76static u_int16_t returnicmp6default =
77 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
78static int blockpolicy = PFRULE_DROP;
79static int require_order = 1;
80static int default_statelock;
81
82TAILQ_HEAD(files, file) files = TAILQ_HEAD_INITIALIZER(files);
83static struct file {
84 TAILQ_ENTRY(file) entry;
85 FILE *stream;
86 char *name;
87 int lineno;
88 int errors;
89} *file;
90struct file *pushfile(const char *, int);
91int popfile(void);
92int check_file_secrecy(int, const char *);
93int yyparse(void);
94int yylex(void);
95int yyerror(const char *, ...);
96int kw_cmp(const void *, const void *);
97int lookup(char *);
98int lgetc(int);
99int lungetc(int);
100int findeol(void);
101
102TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead);
103struct sym {
104 TAILQ_ENTRY(sym) entry;
105 int used;
106 int persist;
107 char *nam;
108 char *val;
109};
110int symset(const char *, const char *, int);
111char *symget(const char *);
112
113int atoul(char *, u_long *);
114
115enum {
116 PFCTL_STATE_NONE,
117 PFCTL_STATE_OPTION,
118 PFCTL_STATE_SCRUB,
119 PFCTL_STATE_QUEUE,
120 PFCTL_STATE_NAT,
121 PFCTL_STATE_FILTER
122};
123
124struct node_proto {
125 u_int8_t proto;
126 struct node_proto *next;
127 struct node_proto *tail;
128};
129
130struct node_port {
131 u_int16_t port[2];
132 u_int8_t op;
133 struct node_port *next;
134 struct node_port *tail;
135};
136
137struct node_uid {
138 uid_t uid[2];
139 u_int8_t op;
140 struct node_uid *next;
141 struct node_uid *tail;
142};
143
144struct node_gid {
145 gid_t gid[2];
146 u_int8_t op;
147 struct node_gid *next;
148 struct node_gid *tail;
149};
150
151struct node_icmp {
152 u_int8_t code;
153 u_int8_t type;
154 u_int8_t proto;
155 struct node_icmp *next;
156 struct node_icmp *tail;
157};
158
159enum { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
160 PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
161 PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
162 PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
163 PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, };
164
165enum { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
166
167struct node_state_opt {
168 int type;
169 union {
170 u_int32_t max_states;
171 u_int32_t max_src_states;
172 u_int32_t max_src_conn;
173 struct {
174 u_int32_t limit;
175 u_int32_t seconds;
176 } max_src_conn_rate;
177 struct {
178 u_int8_t flush;
179 char tblname[PF_TABLE_NAME_SIZE];
180 } overload;
181 u_int32_t max_src_nodes;
182 u_int8_t src_track;
183 u_int32_t statelock;
184 struct {
185 int number;
186 u_int32_t seconds;
187 } timeout;
188 } data;
189 struct node_state_opt *next;
190 struct node_state_opt *tail;
191};
192
193struct peer {
194 struct node_host *host;
195 struct node_port *port;
196};
197
198struct node_queue {
199 char queue[PF_QNAME_SIZE];
200 char parent[PF_QNAME_SIZE];
201 char ifname[IFNAMSIZ];
202 int scheduler;
203 struct node_queue *next;
204 struct node_queue *tail;
205} *queues = NULL;
206
207struct node_qassign {
208 char *qname;
209 char *pqname;
210};
211
212struct filter_opts {
213 int marker;
214#define FOM_FLAGS 0x01
215#define FOM_ICMP 0x02
216#define FOM_TOS 0x04
217#define FOM_KEEP 0x08
218#define FOM_SRCTRACK 0x10
219 struct node_uid *uid;
220 struct node_gid *gid;
221 struct {
222 u_int8_t b1;
223 u_int8_t b2;
224 u_int16_t w;
225 u_int16_t w2;
226 } flags;
227 struct node_icmp *icmpspec;
228 u_int32_t tos;
229 u_int32_t prob;
230 struct {
231 int action;
232 struct node_state_opt *options;
233 } keep;
234 int fragment;
235 int allowopts;
236 char *label;
237 struct node_qassign queues;
238 char *tag;
239 char *match_tag;
240 u_int8_t match_tag_not;
241 u_int rtableid;
242 struct {
243 struct node_host *addr;
244 u_int16_t port;
245 } divert;
246} filter_opts;
247
248struct antispoof_opts {
249 char *label;
250 u_int rtableid;
251} antispoof_opts;
252
253struct scrub_opts {
254 int marker;
255#define SOM_MINTTL 0x01
256#define SOM_MAXMSS 0x02
257#define SOM_FRAGCACHE 0x04
258#define SOM_SETTOS 0x08
259 int nodf;
260 int minttl;
261 int maxmss;
262 int settos;
263 int fragcache;
264 int randomid;
265 int reassemble_tcp;
266 char *match_tag;
267 u_int8_t match_tag_not;
268 u_int rtableid;
269} scrub_opts;
270
271struct queue_opts {
272 int marker;
273#define QOM_BWSPEC 0x01
274#define QOM_SCHEDULER 0x02
275#define QOM_PRIORITY 0x04
276#define QOM_TBRSIZE 0x08
277#define QOM_QLIMIT 0x10
278 struct node_queue_bw queue_bwspec;
279 struct node_queue_opt scheduler;
280 int priority;
281 int tbrsize;
282 int qlimit;
283} queue_opts;
284
285struct table_opts {
286 int flags;
287 int init_addr;
288 struct node_tinithead init_nodes;
289} table_opts;
290
291struct pool_opts {
292 int marker;
293#define POM_TYPE 0x01
294#define POM_STICKYADDRESS 0x02
295 u_int8_t opts;
296 int type;
297 int staticport;
298 struct pf_poolhashkey *key;
299
300} pool_opts;
301
| 50#include <net/altq/altq_priq.h>
51#include <net/altq/altq_hfsc.h>
52#include <net/altq/altq_fairq.h>
53
54#include <stdio.h>
55#include <unistd.h>
56#include <stdlib.h>
57#include <netdb.h>
58#include <stdarg.h>
59#include <errno.h>
60#include <string.h>
61#include <ctype.h>
62#include <math.h>
63#include <err.h>
64#include <limits.h>
65#include <pwd.h>
66#include <grp.h>
67#include <md5.h>
68
69#include "pfctl_parser.h"
70#include "pfctl.h"
71
72static struct pfctl *pf = NULL;
73static int debug = 0;
74static int rulestate = 0;
75static u_int16_t returnicmpdefault =
76 (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
77static u_int16_t returnicmp6default =
78 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
79static int blockpolicy = PFRULE_DROP;
80static int require_order = 1;
81static int default_statelock;
82
83TAILQ_HEAD(files, file) files = TAILQ_HEAD_INITIALIZER(files);
84static struct file {
85 TAILQ_ENTRY(file) entry;
86 FILE *stream;
87 char *name;
88 int lineno;
89 int errors;
90} *file;
91struct file *pushfile(const char *, int);
92int popfile(void);
93int check_file_secrecy(int, const char *);
94int yyparse(void);
95int yylex(void);
96int yyerror(const char *, ...);
97int kw_cmp(const void *, const void *);
98int lookup(char *);
99int lgetc(int);
100int lungetc(int);
101int findeol(void);
102
103TAILQ_HEAD(symhead, sym) symhead = TAILQ_HEAD_INITIALIZER(symhead);
104struct sym {
105 TAILQ_ENTRY(sym) entry;
106 int used;
107 int persist;
108 char *nam;
109 char *val;
110};
111int symset(const char *, const char *, int);
112char *symget(const char *);
113
114int atoul(char *, u_long *);
115
116enum {
117 PFCTL_STATE_NONE,
118 PFCTL_STATE_OPTION,
119 PFCTL_STATE_SCRUB,
120 PFCTL_STATE_QUEUE,
121 PFCTL_STATE_NAT,
122 PFCTL_STATE_FILTER
123};
124
125struct node_proto {
126 u_int8_t proto;
127 struct node_proto *next;
128 struct node_proto *tail;
129};
130
131struct node_port {
132 u_int16_t port[2];
133 u_int8_t op;
134 struct node_port *next;
135 struct node_port *tail;
136};
137
138struct node_uid {
139 uid_t uid[2];
140 u_int8_t op;
141 struct node_uid *next;
142 struct node_uid *tail;
143};
144
145struct node_gid {
146 gid_t gid[2];
147 u_int8_t op;
148 struct node_gid *next;
149 struct node_gid *tail;
150};
151
152struct node_icmp {
153 u_int8_t code;
154 u_int8_t type;
155 u_int8_t proto;
156 struct node_icmp *next;
157 struct node_icmp *tail;
158};
159
160enum { PF_STATE_OPT_MAX, PF_STATE_OPT_NOSYNC, PF_STATE_OPT_SRCTRACK,
161 PF_STATE_OPT_MAX_SRC_STATES, PF_STATE_OPT_MAX_SRC_CONN,
162 PF_STATE_OPT_MAX_SRC_CONN_RATE, PF_STATE_OPT_MAX_SRC_NODES,
163 PF_STATE_OPT_OVERLOAD, PF_STATE_OPT_STATELOCK,
164 PF_STATE_OPT_TIMEOUT, PF_STATE_OPT_SLOPPY, };
165
166enum { PF_SRCTRACK_NONE, PF_SRCTRACK, PF_SRCTRACK_GLOBAL, PF_SRCTRACK_RULE };
167
168struct node_state_opt {
169 int type;
170 union {
171 u_int32_t max_states;
172 u_int32_t max_src_states;
173 u_int32_t max_src_conn;
174 struct {
175 u_int32_t limit;
176 u_int32_t seconds;
177 } max_src_conn_rate;
178 struct {
179 u_int8_t flush;
180 char tblname[PF_TABLE_NAME_SIZE];
181 } overload;
182 u_int32_t max_src_nodes;
183 u_int8_t src_track;
184 u_int32_t statelock;
185 struct {
186 int number;
187 u_int32_t seconds;
188 } timeout;
189 } data;
190 struct node_state_opt *next;
191 struct node_state_opt *tail;
192};
193
194struct peer {
195 struct node_host *host;
196 struct node_port *port;
197};
198
199struct node_queue {
200 char queue[PF_QNAME_SIZE];
201 char parent[PF_QNAME_SIZE];
202 char ifname[IFNAMSIZ];
203 int scheduler;
204 struct node_queue *next;
205 struct node_queue *tail;
206} *queues = NULL;
207
208struct node_qassign {
209 char *qname;
210 char *pqname;
211};
212
213struct filter_opts {
214 int marker;
215#define FOM_FLAGS 0x01
216#define FOM_ICMP 0x02
217#define FOM_TOS 0x04
218#define FOM_KEEP 0x08
219#define FOM_SRCTRACK 0x10
220 struct node_uid *uid;
221 struct node_gid *gid;
222 struct {
223 u_int8_t b1;
224 u_int8_t b2;
225 u_int16_t w;
226 u_int16_t w2;
227 } flags;
228 struct node_icmp *icmpspec;
229 u_int32_t tos;
230 u_int32_t prob;
231 struct {
232 int action;
233 struct node_state_opt *options;
234 } keep;
235 int fragment;
236 int allowopts;
237 char *label;
238 struct node_qassign queues;
239 char *tag;
240 char *match_tag;
241 u_int8_t match_tag_not;
242 u_int rtableid;
243 struct {
244 struct node_host *addr;
245 u_int16_t port;
246 } divert;
247} filter_opts;
248
249struct antispoof_opts {
250 char *label;
251 u_int rtableid;
252} antispoof_opts;
253
254struct scrub_opts {
255 int marker;
256#define SOM_MINTTL 0x01
257#define SOM_MAXMSS 0x02
258#define SOM_FRAGCACHE 0x04
259#define SOM_SETTOS 0x08
260 int nodf;
261 int minttl;
262 int maxmss;
263 int settos;
264 int fragcache;
265 int randomid;
266 int reassemble_tcp;
267 char *match_tag;
268 u_int8_t match_tag_not;
269 u_int rtableid;
270} scrub_opts;
271
272struct queue_opts {
273 int marker;
274#define QOM_BWSPEC 0x01
275#define QOM_SCHEDULER 0x02
276#define QOM_PRIORITY 0x04
277#define QOM_TBRSIZE 0x08
278#define QOM_QLIMIT 0x10
279 struct node_queue_bw queue_bwspec;
280 struct node_queue_opt scheduler;
281 int priority;
282 int tbrsize;
283 int qlimit;
284} queue_opts;
285
286struct table_opts {
287 int flags;
288 int init_addr;
289 struct node_tinithead init_nodes;
290} table_opts;
291
292struct pool_opts {
293 int marker;
294#define POM_TYPE 0x01
295#define POM_STICKYADDRESS 0x02
296 u_int8_t opts;
297 int type;
298 int staticport;
299 struct pf_poolhashkey *key;
300
301} pool_opts;
302
|
302
| 303struct codel_opts codel_opts;
|
303struct node_hfsc_opts hfsc_opts;
304struct node_fairq_opts fairq_opts;
305struct node_state_opt *keep_state_defaults = NULL;
306
307int disallow_table(struct node_host *, const char *);
308int disallow_urpf_failed(struct node_host *, const char *);
309int disallow_alias(struct node_host *, const char *);
310int rule_consistent(struct pf_rule *, int);
311int filter_consistent(struct pf_rule *, int);
312int nat_consistent(struct pf_rule *);
313int rdr_consistent(struct pf_rule *);
314int process_tabledef(char *, struct table_opts *);
315void expand_label_str(char *, size_t, const char *, const char *);
316void expand_label_if(const char *, char *, size_t, const char *);
317void expand_label_addr(const char *, char *, size_t, u_int8_t,
318 struct node_host *);
319void expand_label_port(const char *, char *, size_t,
320 struct node_port *);
321void expand_label_proto(const char *, char *, size_t, u_int8_t);
322void expand_label_nr(const char *, char *, size_t);
323void expand_label(char *, size_t, const char *, u_int8_t,
324 struct node_host *, struct node_port *, struct node_host *,
325 struct node_port *, u_int8_t);
326void expand_rule(struct pf_rule *, struct node_if *,
327 struct node_host *, struct node_proto *, struct node_os *,
328 struct node_host *, struct node_port *, struct node_host *,
329 struct node_port *, struct node_uid *, struct node_gid *,
330 struct node_icmp *, const char *);
331int expand_altq(struct pf_altq *, struct node_if *,
332 struct node_queue *, struct node_queue_bw bwspec,
333 struct node_queue_opt *);
334int expand_queue(struct pf_altq *, struct node_if *,
335 struct node_queue *, struct node_queue_bw,
336 struct node_queue_opt *);
337int expand_skip_interface(struct node_if *);
338
339int check_rulestate(int);
340int getservice(char *);
341int rule_label(struct pf_rule *, char *);
342int rt_tableid_max(void);
343
344void mv_rules(struct pf_ruleset *, struct pf_ruleset *);
345void decide_address_family(struct node_host *, sa_family_t *);
346void remove_invalid_hosts(struct node_host **, sa_family_t *);
347int invalid_redirect(struct node_host *, sa_family_t);
348u_int16_t parseicmpspec(char *, sa_family_t);
349
350TAILQ_HEAD(loadanchorshead, loadanchors)
351 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
352
353struct loadanchors {
354 TAILQ_ENTRY(loadanchors) entries;
355 char *anchorname;
356 char *filename;
357};
358
359typedef struct {
360 union {
361 int64_t number;
362 double probability;
363 int i;
364 char *string;
365 u_int rtableid;
366 struct {
367 u_int8_t b1;
368 u_int8_t b2;
369 u_int16_t w;
370 u_int16_t w2;
371 } b;
372 struct range {
373 int a;
374 int b;
375 int t;
376 } range;
377 struct node_if *interface;
378 struct node_proto *proto;
379 struct node_icmp *icmp;
380 struct node_host *host;
381 struct node_os *os;
382 struct node_port *port;
383 struct node_uid *uid;
384 struct node_gid *gid;
385 struct node_state_opt *state_opt;
386 struct peer peer;
387 struct {
388 struct peer src, dst;
389 struct node_os *src_os;
390 } fromto;
391 struct {
392 struct node_host *host;
393 u_int8_t rt;
394 u_int8_t pool_opts;
395 sa_family_t af;
396 struct pf_poolhashkey *key;
397 } route;
398 struct redirection {
399 struct node_host *host;
400 struct range rport;
401 } *redirection;
402 struct {
403 int action;
404 struct node_state_opt *options;
405 } keep_state;
406 struct {
407 u_int8_t log;
408 u_int8_t logif;
409 u_int8_t quick;
410 } logquick;
411 struct {
412 int neg;
413 char *name;
414 } tagged;
415 struct pf_poolhashkey *hashkey;
416 struct node_queue *queue;
417 struct node_queue_opt queue_options;
418 struct node_queue_bw queue_bwspec;
419 struct node_qassign qassign;
420 struct filter_opts filter_opts;
421 struct antispoof_opts antispoof_opts;
422 struct queue_opts queue_opts;
423 struct scrub_opts scrub_opts;
424 struct table_opts table_opts;
425 struct pool_opts pool_opts;
426 struct node_hfsc_opts hfsc_opts;
427 struct node_fairq_opts fairq_opts;
| 304struct node_hfsc_opts hfsc_opts;
305struct node_fairq_opts fairq_opts;
306struct node_state_opt *keep_state_defaults = NULL;
307
308int disallow_table(struct node_host *, const char *);
309int disallow_urpf_failed(struct node_host *, const char *);
310int disallow_alias(struct node_host *, const char *);
311int rule_consistent(struct pf_rule *, int);
312int filter_consistent(struct pf_rule *, int);
313int nat_consistent(struct pf_rule *);
314int rdr_consistent(struct pf_rule *);
315int process_tabledef(char *, struct table_opts *);
316void expand_label_str(char *, size_t, const char *, const char *);
317void expand_label_if(const char *, char *, size_t, const char *);
318void expand_label_addr(const char *, char *, size_t, u_int8_t,
319 struct node_host *);
320void expand_label_port(const char *, char *, size_t,
321 struct node_port *);
322void expand_label_proto(const char *, char *, size_t, u_int8_t);
323void expand_label_nr(const char *, char *, size_t);
324void expand_label(char *, size_t, const char *, u_int8_t,
325 struct node_host *, struct node_port *, struct node_host *,
326 struct node_port *, u_int8_t);
327void expand_rule(struct pf_rule *, struct node_if *,
328 struct node_host *, struct node_proto *, struct node_os *,
329 struct node_host *, struct node_port *, struct node_host *,
330 struct node_port *, struct node_uid *, struct node_gid *,
331 struct node_icmp *, const char *);
332int expand_altq(struct pf_altq *, struct node_if *,
333 struct node_queue *, struct node_queue_bw bwspec,
334 struct node_queue_opt *);
335int expand_queue(struct pf_altq *, struct node_if *,
336 struct node_queue *, struct node_queue_bw,
337 struct node_queue_opt *);
338int expand_skip_interface(struct node_if *);
339
340int check_rulestate(int);
341int getservice(char *);
342int rule_label(struct pf_rule *, char *);
343int rt_tableid_max(void);
344
345void mv_rules(struct pf_ruleset *, struct pf_ruleset *);
346void decide_address_family(struct node_host *, sa_family_t *);
347void remove_invalid_hosts(struct node_host **, sa_family_t *);
348int invalid_redirect(struct node_host *, sa_family_t);
349u_int16_t parseicmpspec(char *, sa_family_t);
350
351TAILQ_HEAD(loadanchorshead, loadanchors)
352 loadanchorshead = TAILQ_HEAD_INITIALIZER(loadanchorshead);
353
354struct loadanchors {
355 TAILQ_ENTRY(loadanchors) entries;
356 char *anchorname;
357 char *filename;
358};
359
360typedef struct {
361 union {
362 int64_t number;
363 double probability;
364 int i;
365 char *string;
366 u_int rtableid;
367 struct {
368 u_int8_t b1;
369 u_int8_t b2;
370 u_int16_t w;
371 u_int16_t w2;
372 } b;
373 struct range {
374 int a;
375 int b;
376 int t;
377 } range;
378 struct node_if *interface;
379 struct node_proto *proto;
380 struct node_icmp *icmp;
381 struct node_host *host;
382 struct node_os *os;
383 struct node_port *port;
384 struct node_uid *uid;
385 struct node_gid *gid;
386 struct node_state_opt *state_opt;
387 struct peer peer;
388 struct {
389 struct peer src, dst;
390 struct node_os *src_os;
391 } fromto;
392 struct {
393 struct node_host *host;
394 u_int8_t rt;
395 u_int8_t pool_opts;
396 sa_family_t af;
397 struct pf_poolhashkey *key;
398 } route;
399 struct redirection {
400 struct node_host *host;
401 struct range rport;
402 } *redirection;
403 struct {
404 int action;
405 struct node_state_opt *options;
406 } keep_state;
407 struct {
408 u_int8_t log;
409 u_int8_t logif;
410 u_int8_t quick;
411 } logquick;
412 struct {
413 int neg;
414 char *name;
415 } tagged;
416 struct pf_poolhashkey *hashkey;
417 struct node_queue *queue;
418 struct node_queue_opt queue_options;
419 struct node_queue_bw queue_bwspec;
420 struct node_qassign qassign;
421 struct filter_opts filter_opts;
422 struct antispoof_opts antispoof_opts;
423 struct queue_opts queue_opts;
424 struct scrub_opts scrub_opts;
425 struct table_opts table_opts;
426 struct pool_opts pool_opts;
427 struct node_hfsc_opts hfsc_opts;
428 struct node_fairq_opts fairq_opts;
|
| 429 struct codel_opts codel_opts;
|
428 } v;
429 int lineno;
430} YYSTYPE;
431
432#define PPORT_RANGE 1
433#define PPORT_STAR 2
434int parseport(char *, struct range *r, int);
435
436#define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
437 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \
438 !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
439
440%}
441
442%token PASS BLOCK SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
443%token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
444%token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
445%token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
446%token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
447%token REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
448%token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY RANDOMID
449%token REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
450%token ANTISPOOF FOR INCLUDE
451%token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY
| 430 } v;
431 int lineno;
432} YYSTYPE;
433
434#define PPORT_RANGE 1
435#define PPORT_STAR 2
436int parseport(char *, struct range *r, int);
437
438#define DYNIF_MULTIADDR(addr) ((addr).type == PF_ADDR_DYNIFTL && \
439 (!((addr).iflags & PFI_AFLAG_NOALIAS) || \
440 !isdigit((addr).v.ifname[strlen((addr).v.ifname)-1])))
441
442%}
443
444%token PASS BLOCK SCRUB RETURN IN OS OUT LOG QUICK ON FROM TO FLAGS
445%token RETURNRST RETURNICMP RETURNICMP6 PROTO INET INET6 ALL ANY ICMPTYPE
446%token ICMP6TYPE CODE KEEP MODULATE STATE PORT RDR NAT BINAT ARROW NODF
447%token MINTTL ERROR ALLOWOPTS FASTROUTE FILENAME ROUTETO DUPTO REPLYTO NO LABEL
448%token NOROUTE URPFFAILED FRAGMENT USER GROUP MAXMSS MAXIMUM TTL TOS DROP TABLE
449%token REASSEMBLE FRAGDROP FRAGCROP ANCHOR NATANCHOR RDRANCHOR BINATANCHOR
450%token SET OPTIMIZATION TIMEOUT LIMIT LOGINTERFACE BLOCKPOLICY RANDOMID
451%token REQUIREORDER SYNPROXY FINGERPRINTS NOSYNC DEBUG SKIP HOSTID
452%token ANTISPOOF FOR INCLUDE
453%token BITMASK RANDOM SOURCEHASH ROUNDROBIN STATICPORT PROBABILITY
|
452%token ALTQ CBQ PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME UPPERLIMIT
453%token QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE
| 454%token ALTQ CBQ CODEL PRIQ HFSC FAIRQ BANDWIDTH TBRSIZE LINKSHARE REALTIME
455%token UPPERLIMIT QUEUE PRIORITY QLIMIT HOGS BUCKETS RTABLE TARGET INTERVAL
|
454%token LOAD RULESET_OPTIMIZATION
455%token STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
456%token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY
457%token TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS
458%token DIVERTTO DIVERTREPLY
459%token <v.string> STRING
460%token <v.number> NUMBER
461%token <v.i> PORTBINARY
462%type <v.interface> interface if_list if_item_not if_item
463%type <v.number> number icmptype icmp6type uid gid
464%type <v.number> tos not yesno
465%type <v.probability> probability
466%type <v.i> no dir af fragcache optimizer
467%type <v.i> sourcetrack flush unaryop statelock
468%type <v.b> action nataction natpasslog scrubaction
469%type <v.b> flags flag blockspec
470%type <v.range> portplain portstar portrange
471%type <v.hashkey> hashkey
472%type <v.proto> proto proto_list proto_item
473%type <v.number> protoval
474%type <v.icmp> icmpspec
475%type <v.icmp> icmp_list icmp_item
476%type <v.icmp> icmp6_list icmp6_item
477%type <v.number> reticmpspec reticmp6spec
478%type <v.fromto> fromto
479%type <v.peer> ipportspec from to
480%type <v.host> ipspec toipspec xhost host dynaddr host_list
481%type <v.host> redir_host_list redirspec
482%type <v.host> route_host route_host_list routespec
483%type <v.os> os xos os_list
484%type <v.port> portspec port_list port_item
485%type <v.uid> uids uid_list uid_item
486%type <v.gid> gids gid_list gid_item
487%type <v.route> route
488%type <v.redirection> redirection redirpool
489%type <v.string> label stringall tag anchorname
490%type <v.string> string varstring numberstring
491%type <v.keep_state> keep
492%type <v.state_opt> state_opt_spec state_opt_list state_opt_item
493%type <v.logquick> logquick quick log logopts logopt
494%type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if
495%type <v.qassign> qname
496%type <v.queue> qassign qassign_list qassign_item
497%type <v.queue_options> scheduler
498%type <v.number> cbqflags_list cbqflags_item
499%type <v.number> priqflags_list priqflags_item
500%type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts
501%type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts
| 456%token LOAD RULESET_OPTIMIZATION
457%token STICKYADDRESS MAXSRCSTATES MAXSRCNODES SOURCETRACK GLOBAL RULE
458%token MAXSRCCONN MAXSRCCONNRATE OVERLOAD FLUSH SLOPPY
459%token TAGGED TAG IFBOUND FLOATING STATEPOLICY STATEDEFAULTS ROUTE SETTOS
460%token DIVERTTO DIVERTREPLY
461%token <v.string> STRING
462%token <v.number> NUMBER
463%token <v.i> PORTBINARY
464%type <v.interface> interface if_list if_item_not if_item
465%type <v.number> number icmptype icmp6type uid gid
466%type <v.number> tos not yesno
467%type <v.probability> probability
468%type <v.i> no dir af fragcache optimizer
469%type <v.i> sourcetrack flush unaryop statelock
470%type <v.b> action nataction natpasslog scrubaction
471%type <v.b> flags flag blockspec
472%type <v.range> portplain portstar portrange
473%type <v.hashkey> hashkey
474%type <v.proto> proto proto_list proto_item
475%type <v.number> protoval
476%type <v.icmp> icmpspec
477%type <v.icmp> icmp_list icmp_item
478%type <v.icmp> icmp6_list icmp6_item
479%type <v.number> reticmpspec reticmp6spec
480%type <v.fromto> fromto
481%type <v.peer> ipportspec from to
482%type <v.host> ipspec toipspec xhost host dynaddr host_list
483%type <v.host> redir_host_list redirspec
484%type <v.host> route_host route_host_list routespec
485%type <v.os> os xos os_list
486%type <v.port> portspec port_list port_item
487%type <v.uid> uids uid_list uid_item
488%type <v.gid> gids gid_list gid_item
489%type <v.route> route
490%type <v.redirection> redirection redirpool
491%type <v.string> label stringall tag anchorname
492%type <v.string> string varstring numberstring
493%type <v.keep_state> keep
494%type <v.state_opt> state_opt_spec state_opt_list state_opt_item
495%type <v.logquick> logquick quick log logopts logopt
496%type <v.interface> antispoof_ifspc antispoof_iflst antispoof_if
497%type <v.qassign> qname
498%type <v.queue> qassign qassign_list qassign_item
499%type <v.queue_options> scheduler
500%type <v.number> cbqflags_list cbqflags_item
501%type <v.number> priqflags_list priqflags_item
502%type <v.hfsc_opts> hfscopts_list hfscopts_item hfsc_opts
503%type <v.fairq_opts> fairqopts_list fairqopts_item fairq_opts
|
| 504%type <v.codel_opts> codelopts_list codelopts_item codel_opts
|
502%type <v.queue_bwspec> bandwidth
503%type <v.filter_opts> filter_opts filter_opt filter_opts_l
504%type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l
505%type <v.queue_opts> queue_opts queue_opt queue_opts_l
506%type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l
507%type <v.table_opts> table_opts table_opt table_opts_l
508%type <v.pool_opts> pool_opts pool_opt pool_opts_l
509%type <v.tagged> tagged
510%type <v.rtableid> rtable
511%%
512
513ruleset : /* empty */
514 | ruleset include '\n'
515 | ruleset '\n'
516 | ruleset option '\n'
517 | ruleset scrubrule '\n'
518 | ruleset natrule '\n'
519 | ruleset binatrule '\n'
520 | ruleset pfrule '\n'
521 | ruleset anchorrule '\n'
522 | ruleset loadrule '\n'
523 | ruleset altqif '\n'
524 | ruleset queuespec '\n'
525 | ruleset varset '\n'
526 | ruleset antispoof '\n'
527 | ruleset tabledef '\n'
528 | '{' fakeanchor '}' '\n';
529 | ruleset error '\n' { file->errors++; }
530 ;
531
532include : INCLUDE STRING {
533 struct file *nfile;
534
535 if ((nfile = pushfile($2, 0)) == NULL) {
536 yyerror("failed to include file %s", $2);
537 free($2);
538 YYERROR;
539 }
540 free($2);
541
542 file = nfile;
543 lungetc('\n');
544 }
545 ;
546
547/*
548 * apply to previouslys specified rule: must be careful to note
549 * what that is: pf or nat or binat or rdr
550 */
551fakeanchor : fakeanchor '\n'
552 | fakeanchor anchorrule '\n'
553 | fakeanchor binatrule '\n'
554 | fakeanchor natrule '\n'
555 | fakeanchor pfrule '\n'
556 | fakeanchor error '\n'
557 ;
558
559optimizer : string {
560 if (!strcmp($1, "none"))
561 $$ = 0;
562 else if (!strcmp($1, "basic"))
563 $$ = PF_OPTIMIZE_BASIC;
564 else if (!strcmp($1, "profile"))
565 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
566 else {
567 yyerror("unknown ruleset-optimization %s", $1);
568 YYERROR;
569 }
570 }
571 ;
572
573option : SET OPTIMIZATION STRING {
574 if (check_rulestate(PFCTL_STATE_OPTION)) {
575 free($3);
576 YYERROR;
577 }
578 if (pfctl_set_optimization(pf, $3) != 0) {
579 yyerror("unknown optimization %s", $3);
580 free($3);
581 YYERROR;
582 }
583 free($3);
584 }
585 | SET RULESET_OPTIMIZATION optimizer {
586 if (!(pf->opts & PF_OPT_OPTIMIZE)) {
587 pf->opts |= PF_OPT_OPTIMIZE;
588 pf->optimize = $3;
589 }
590 }
591 | SET TIMEOUT timeout_spec
592 | SET TIMEOUT '{' optnl timeout_list '}'
593 | SET LIMIT limit_spec
594 | SET LIMIT '{' optnl limit_list '}'
595 | SET LOGINTERFACE stringall {
596 if (check_rulestate(PFCTL_STATE_OPTION)) {
597 free($3);
598 YYERROR;
599 }
600 if (pfctl_set_logif(pf, $3) != 0) {
601 yyerror("error setting loginterface %s", $3);
602 free($3);
603 YYERROR;
604 }
605 free($3);
606 }
607 | SET HOSTID number {
608 if ($3 == 0 || $3 > UINT_MAX) {
609 yyerror("hostid must be non-zero");
610 YYERROR;
611 }
612 if (pfctl_set_hostid(pf, $3) != 0) {
613 yyerror("error setting hostid %08x", $3);
614 YYERROR;
615 }
616 }
617 | SET BLOCKPOLICY DROP {
618 if (pf->opts & PF_OPT_VERBOSE)
619 printf("set block-policy drop\n");
620 if (check_rulestate(PFCTL_STATE_OPTION))
621 YYERROR;
622 blockpolicy = PFRULE_DROP;
623 }
624 | SET BLOCKPOLICY RETURN {
625 if (pf->opts & PF_OPT_VERBOSE)
626 printf("set block-policy return\n");
627 if (check_rulestate(PFCTL_STATE_OPTION))
628 YYERROR;
629 blockpolicy = PFRULE_RETURN;
630 }
631 | SET REQUIREORDER yesno {
632 if (pf->opts & PF_OPT_VERBOSE)
633 printf("set require-order %s\n",
634 $3 == 1 ? "yes" : "no");
635 require_order = $3;
636 }
637 | SET FINGERPRINTS STRING {
638 if (pf->opts & PF_OPT_VERBOSE)
639 printf("set fingerprints \"%s\"\n", $3);
640 if (check_rulestate(PFCTL_STATE_OPTION)) {
641 free($3);
642 YYERROR;
643 }
644 if (!pf->anchor->name[0]) {
645 if (pfctl_file_fingerprints(pf->dev,
646 pf->opts, $3)) {
647 yyerror("error loading "
648 "fingerprints %s", $3);
649 free($3);
650 YYERROR;
651 }
652 }
653 free($3);
654 }
655 | SET STATEPOLICY statelock {
656 if (pf->opts & PF_OPT_VERBOSE)
657 switch ($3) {
658 case 0:
659 printf("set state-policy floating\n");
660 break;
661 case PFRULE_IFBOUND:
662 printf("set state-policy if-bound\n");
663 break;
664 }
665 default_statelock = $3;
666 }
667 | SET DEBUG STRING {
668 if (check_rulestate(PFCTL_STATE_OPTION)) {
669 free($3);
670 YYERROR;
671 }
672 if (pfctl_set_debug(pf, $3) != 0) {
673 yyerror("error setting debuglevel %s", $3);
674 free($3);
675 YYERROR;
676 }
677 free($3);
678 }
679 | SET SKIP interface {
680 if (expand_skip_interface($3) != 0) {
681 yyerror("error setting skip interface(s)");
682 YYERROR;
683 }
684 }
685 | SET STATEDEFAULTS state_opt_list {
686 if (keep_state_defaults != NULL) {
687 yyerror("cannot redefine state-defaults");
688 YYERROR;
689 }
690 keep_state_defaults = $3;
691 }
692 ;
693
694stringall : STRING { $$ = $1; }
695 | ALL {
696 if (($$ = strdup("all")) == NULL) {
697 err(1, "stringall: strdup");
698 }
699 }
700 ;
701
702string : STRING string {
703 if (asprintf(&$$, "%s %s", $1, $2) == -1)
704 err(1, "string: asprintf");
705 free($1);
706 free($2);
707 }
708 | STRING
709 ;
710
711varstring : numberstring varstring {
712 if (asprintf(&$$, "%s %s", $1, $2) == -1)
713 err(1, "string: asprintf");
714 free($1);
715 free($2);
716 }
717 | numberstring
718 ;
719
720numberstring : NUMBER {
721 char *s;
722 if (asprintf(&s, "%lld", (long long)$1) == -1) {
723 yyerror("string: asprintf");
724 YYERROR;
725 }
726 $$ = s;
727 }
728 | STRING
729 ;
730
731varset : STRING '=' varstring {
732 if (pf->opts & PF_OPT_VERBOSE)
733 printf("%s = \"%s\"\n", $1, $3);
734 if (symset($1, $3, 0) == -1)
735 err(1, "cannot store variable %s", $1);
736 free($1);
737 free($3);
738 }
739 ;
740
741anchorname : STRING { $$ = $1; }
742 | /* empty */ { $$ = NULL; }
743 ;
744
745pfa_anchorlist : /* empty */
746 | pfa_anchorlist '\n'
747 | pfa_anchorlist pfrule '\n'
748 | pfa_anchorlist anchorrule '\n'
749 ;
750
751pfa_anchor : '{'
752 {
753 char ta[PF_ANCHOR_NAME_SIZE];
754 struct pf_ruleset *rs;
755
756 /* steping into a brace anchor */
757 pf->asd++;
758 pf->bn++;
759 pf->brace = 1;
760
761 /* create a holding ruleset in the root */
762 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
763 rs = pf_find_or_create_ruleset(ta);
764 if (rs == NULL)
765 err(1, "pfa_anchor: pf_find_or_create_ruleset");
766 pf->astack[pf->asd] = rs->anchor;
767 pf->anchor = rs->anchor;
768 } '\n' pfa_anchorlist '}'
769 {
770 pf->alast = pf->anchor;
771 pf->asd--;
772 pf->anchor = pf->astack[pf->asd];
773 }
774 | /* empty */
775 ;
776
777anchorrule : ANCHOR anchorname dir quick interface af proto fromto
778 filter_opts pfa_anchor
779 {
780 struct pf_rule r;
781 struct node_proto *proto;
782
783 if (check_rulestate(PFCTL_STATE_FILTER)) {
784 if ($2)
785 free($2);
786 YYERROR;
787 }
788
789 if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
790 free($2);
791 yyerror("anchor names beginning with '_' "
792 "are reserved for internal use");
793 YYERROR;
794 }
795
796 memset(&r, 0, sizeof(r));
797 if (pf->astack[pf->asd + 1]) {
798 /* move inline rules into relative location */
799 pf_anchor_setup(&r,
800 &pf->astack[pf->asd]->ruleset,
801 $2 ? $2 : pf->alast->name);
802
803 if (r.anchor == NULL)
804 err(1, "anchorrule: unable to "
805 "create ruleset");
806
807 if (pf->alast != r.anchor) {
808 if (r.anchor->match) {
809 yyerror("inline anchor '%s' "
810 "already exists",
811 r.anchor->name);
812 YYERROR;
813 }
814 mv_rules(&pf->alast->ruleset,
815 &r.anchor->ruleset);
816 }
817 pf_remove_if_empty_ruleset(&pf->alast->ruleset);
818 pf->alast = r.anchor;
819 } else {
820 if (!$2) {
821 yyerror("anchors without explicit "
822 "rules must specify a name");
823 YYERROR;
824 }
825 }
826 r.direction = $3;
827 r.quick = $4.quick;
828 r.af = $6;
829 r.prob = $9.prob;
830 r.rtableid = $9.rtableid;
831
832 if ($9.tag)
833 if (strlcpy(r.tagname, $9.tag,
834 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
835 yyerror("tag too long, max %u chars",
836 PF_TAG_NAME_SIZE - 1);
837 YYERROR;
838 }
839 if ($9.match_tag)
840 if (strlcpy(r.match_tagname, $9.match_tag,
841 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
842 yyerror("tag too long, max %u chars",
843 PF_TAG_NAME_SIZE - 1);
844 YYERROR;
845 }
846 r.match_tag_not = $9.match_tag_not;
847 if (rule_label(&r, $9.label))
848 YYERROR;
849 free($9.label);
850 r.flags = $9.flags.b1;
851 r.flagset = $9.flags.b2;
852 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
853 yyerror("flags always false");
854 YYERROR;
855 }
856 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
857 for (proto = $7; proto != NULL &&
858 proto->proto != IPPROTO_TCP;
859 proto = proto->next)
860 ; /* nothing */
861 if (proto == NULL && $7 != NULL) {
862 if ($9.flags.b1 || $9.flags.b2)
863 yyerror(
864 "flags only apply to tcp");
865 if ($8.src_os)
866 yyerror(
867 "OS fingerprinting only "
868 "applies to tcp");
869 YYERROR;
870 }
871 }
872
873 r.tos = $9.tos;
874
875 if ($9.keep.action) {
876 yyerror("cannot specify state handling "
877 "on anchors");
878 YYERROR;
879 }
880
881 if ($9.match_tag)
882 if (strlcpy(r.match_tagname, $9.match_tag,
883 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
884 yyerror("tag too long, max %u chars",
885 PF_TAG_NAME_SIZE - 1);
886 YYERROR;
887 }
888 r.match_tag_not = $9.match_tag_not;
889
890 decide_address_family($8.src.host, &r.af);
891 decide_address_family($8.dst.host, &r.af);
892
893 expand_rule(&r, $5, NULL, $7, $8.src_os,
894 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
895 $9.uid, $9.gid, $9.icmpspec,
896 pf->astack[pf->asd + 1] ? pf->alast->name : $2);
897 free($2);
898 pf->astack[pf->asd + 1] = NULL;
899 }
900 | NATANCHOR string interface af proto fromto rtable {
901 struct pf_rule r;
902
903 if (check_rulestate(PFCTL_STATE_NAT)) {
904 free($2);
905 YYERROR;
906 }
907
908 memset(&r, 0, sizeof(r));
909 r.action = PF_NAT;
910 r.af = $4;
911 r.rtableid = $7;
912
913 decide_address_family($6.src.host, &r.af);
914 decide_address_family($6.dst.host, &r.af);
915
916 expand_rule(&r, $3, NULL, $5, $6.src_os,
917 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
918 0, 0, 0, $2);
919 free($2);
920 }
921 | RDRANCHOR string interface af proto fromto rtable {
922 struct pf_rule r;
923
924 if (check_rulestate(PFCTL_STATE_NAT)) {
925 free($2);
926 YYERROR;
927 }
928
929 memset(&r, 0, sizeof(r));
930 r.action = PF_RDR;
931 r.af = $4;
932 r.rtableid = $7;
933
934 decide_address_family($6.src.host, &r.af);
935 decide_address_family($6.dst.host, &r.af);
936
937 if ($6.src.port != NULL) {
938 yyerror("source port parameter not supported"
939 " in rdr-anchor");
940 YYERROR;
941 }
942 if ($6.dst.port != NULL) {
943 if ($6.dst.port->next != NULL) {
944 yyerror("destination port list "
945 "expansion not supported in "
946 "rdr-anchor");
947 YYERROR;
948 } else if ($6.dst.port->op != PF_OP_EQ) {
949 yyerror("destination port operators"
950 " not supported in rdr-anchor");
951 YYERROR;
952 }
953 r.dst.port[0] = $6.dst.port->port[0];
954 r.dst.port[1] = $6.dst.port->port[1];
955 r.dst.port_op = $6.dst.port->op;
956 }
957
958 expand_rule(&r, $3, NULL, $5, $6.src_os,
959 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
960 0, 0, 0, $2);
961 free($2);
962 }
963 | BINATANCHOR string interface af proto fromto rtable {
964 struct pf_rule r;
965
966 if (check_rulestate(PFCTL_STATE_NAT)) {
967 free($2);
968 YYERROR;
969 }
970
971 memset(&r, 0, sizeof(r));
972 r.action = PF_BINAT;
973 r.af = $4;
974 r.rtableid = $7;
975 if ($5 != NULL) {
976 if ($5->next != NULL) {
977 yyerror("proto list expansion"
978 " not supported in binat-anchor");
979 YYERROR;
980 }
981 r.proto = $5->proto;
982 free($5);
983 }
984
985 if ($6.src.host != NULL || $6.src.port != NULL ||
986 $6.dst.host != NULL || $6.dst.port != NULL) {
987 yyerror("fromto parameter not supported"
988 " in binat-anchor");
989 YYERROR;
990 }
991
992 decide_address_family($6.src.host, &r.af);
993 decide_address_family($6.dst.host, &r.af);
994
995 pfctl_add_rule(pf, &r, $2);
996 free($2);
997 }
998 ;
999
1000loadrule : LOAD ANCHOR string FROM string {
1001 struct loadanchors *loadanchor;
1002
1003 if (strlen(pf->anchor->name) + 1 +
1004 strlen($3) >= MAXPATHLEN) {
1005 yyerror("anchorname %s too long, max %u\n",
1006 $3, MAXPATHLEN - 1);
1007 free($3);
1008 YYERROR;
1009 }
1010 loadanchor = calloc(1, sizeof(struct loadanchors));
1011 if (loadanchor == NULL)
1012 err(1, "loadrule: calloc");
1013 if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
1014 NULL)
1015 err(1, "loadrule: malloc");
1016 if (pf->anchor->name[0])
1017 snprintf(loadanchor->anchorname, MAXPATHLEN,
1018 "%s/%s", pf->anchor->name, $3);
1019 else
1020 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
1021 if ((loadanchor->filename = strdup($5)) == NULL)
1022 err(1, "loadrule: strdup");
1023
1024 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
1025 entries);
1026
1027 free($3);
1028 free($5);
1029 };
1030
1031scrubaction : no SCRUB {
1032 $$.b2 = $$.w = 0;
1033 if ($1)
1034 $$.b1 = PF_NOSCRUB;
1035 else
1036 $$.b1 = PF_SCRUB;
1037 }
1038 ;
1039
1040scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts
1041 {
1042 struct pf_rule r;
1043
1044 if (check_rulestate(PFCTL_STATE_SCRUB))
1045 YYERROR;
1046
1047 memset(&r, 0, sizeof(r));
1048
1049 r.action = $1.b1;
1050 r.direction = $2;
1051
1052 r.log = $3.log;
1053 r.logif = $3.logif;
1054 if ($3.quick) {
1055 yyerror("scrub rules do not support 'quick'");
1056 YYERROR;
1057 }
1058
1059 r.af = $5;
1060 if ($8.nodf)
1061 r.rule_flag |= PFRULE_NODF;
1062 if ($8.randomid)
1063 r.rule_flag |= PFRULE_RANDOMID;
1064 if ($8.reassemble_tcp) {
1065 if (r.direction != PF_INOUT) {
1066 yyerror("reassemble tcp rules can not "
1067 "specify direction");
1068 YYERROR;
1069 }
1070 r.rule_flag |= PFRULE_REASSEMBLE_TCP;
1071 }
1072 if ($8.minttl)
1073 r.min_ttl = $8.minttl;
1074 if ($8.maxmss)
1075 r.max_mss = $8.maxmss;
1076 if ($8.marker & SOM_SETTOS) {
1077 r.rule_flag |= PFRULE_SET_TOS;
1078 r.set_tos = $8.settos;
1079 }
1080 if ($8.fragcache)
1081 r.rule_flag |= $8.fragcache;
1082 if ($8.match_tag)
1083 if (strlcpy(r.match_tagname, $8.match_tag,
1084 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1085 yyerror("tag too long, max %u chars",
1086 PF_TAG_NAME_SIZE - 1);
1087 YYERROR;
1088 }
1089 r.match_tag_not = $8.match_tag_not;
1090 r.rtableid = $8.rtableid;
1091
1092 expand_rule(&r, $4, NULL, $6, $7.src_os,
1093 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
1094 NULL, NULL, NULL, "");
1095 }
1096 ;
1097
1098scrub_opts : {
1099 bzero(&scrub_opts, sizeof scrub_opts);
1100 scrub_opts.rtableid = -1;
1101 }
1102 scrub_opts_l
1103 { $$ = scrub_opts; }
1104 | /* empty */ {
1105 bzero(&scrub_opts, sizeof scrub_opts);
1106 scrub_opts.rtableid = -1;
1107 $$ = scrub_opts;
1108 }
1109 ;
1110
1111scrub_opts_l : scrub_opts_l scrub_opt
1112 | scrub_opt
1113 ;
1114
1115scrub_opt : NODF {
1116 if (scrub_opts.nodf) {
1117 yyerror("no-df cannot be respecified");
1118 YYERROR;
1119 }
1120 scrub_opts.nodf = 1;
1121 }
1122 | MINTTL NUMBER {
1123 if (scrub_opts.marker & SOM_MINTTL) {
1124 yyerror("min-ttl cannot be respecified");
1125 YYERROR;
1126 }
1127 if ($2 < 0 || $2 > 255) {
1128 yyerror("illegal min-ttl value %d", $2);
1129 YYERROR;
1130 }
1131 scrub_opts.marker |= SOM_MINTTL;
1132 scrub_opts.minttl = $2;
1133 }
1134 | MAXMSS NUMBER {
1135 if (scrub_opts.marker & SOM_MAXMSS) {
1136 yyerror("max-mss cannot be respecified");
1137 YYERROR;
1138 }
1139 if ($2 < 0 || $2 > 65535) {
1140 yyerror("illegal max-mss value %d", $2);
1141 YYERROR;
1142 }
1143 scrub_opts.marker |= SOM_MAXMSS;
1144 scrub_opts.maxmss = $2;
1145 }
1146 | SETTOS tos {
1147 if (scrub_opts.marker & SOM_SETTOS) {
1148 yyerror("set-tos cannot be respecified");
1149 YYERROR;
1150 }
1151 scrub_opts.marker |= SOM_SETTOS;
1152 scrub_opts.settos = $2;
1153 }
1154 | fragcache {
1155 if (scrub_opts.marker & SOM_FRAGCACHE) {
1156 yyerror("fragcache cannot be respecified");
1157 YYERROR;
1158 }
1159 scrub_opts.marker |= SOM_FRAGCACHE;
1160 scrub_opts.fragcache = $1;
1161 }
1162 | REASSEMBLE STRING {
1163 if (strcasecmp($2, "tcp") != 0) {
1164 yyerror("scrub reassemble supports only tcp, "
1165 "not '%s'", $2);
1166 free($2);
1167 YYERROR;
1168 }
1169 free($2);
1170 if (scrub_opts.reassemble_tcp) {
1171 yyerror("reassemble tcp cannot be respecified");
1172 YYERROR;
1173 }
1174 scrub_opts.reassemble_tcp = 1;
1175 }
1176 | RANDOMID {
1177 if (scrub_opts.randomid) {
1178 yyerror("random-id cannot be respecified");
1179 YYERROR;
1180 }
1181 scrub_opts.randomid = 1;
1182 }
1183 | RTABLE NUMBER {
1184 if ($2 < 0 || $2 > rt_tableid_max()) {
1185 yyerror("invalid rtable id");
1186 YYERROR;
1187 }
1188 scrub_opts.rtableid = $2;
1189 }
1190 | not TAGGED string {
1191 scrub_opts.match_tag = $3;
1192 scrub_opts.match_tag_not = $1;
1193 }
1194 ;
1195
1196fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ }
1197 | FRAGMENT FRAGCROP { $$ = PFRULE_FRAGCROP; }
1198 | FRAGMENT FRAGDROP { $$ = PFRULE_FRAGDROP; }
1199 ;
1200
1201antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1202 struct pf_rule r;
1203 struct node_host *h = NULL, *hh;
1204 struct node_if *i, *j;
1205
1206 if (check_rulestate(PFCTL_STATE_FILTER))
1207 YYERROR;
1208
1209 for (i = $3; i; i = i->next) {
1210 bzero(&r, sizeof(r));
1211
1212 r.action = PF_DROP;
1213 r.direction = PF_IN;
1214 r.log = $2.log;
1215 r.logif = $2.logif;
1216 r.quick = $2.quick;
1217 r.af = $4;
1218 if (rule_label(&r, $5.label))
1219 YYERROR;
1220 r.rtableid = $5.rtableid;
1221 j = calloc(1, sizeof(struct node_if));
1222 if (j == NULL)
1223 err(1, "antispoof: calloc");
1224 if (strlcpy(j->ifname, i->ifname,
1225 sizeof(j->ifname)) >= sizeof(j->ifname)) {
1226 free(j);
1227 yyerror("interface name too long");
1228 YYERROR;
1229 }
1230 j->not = 1;
1231 if (i->dynamic) {
1232 h = calloc(1, sizeof(*h));
1233 if (h == NULL)
1234 err(1, "address: calloc");
1235 h->addr.type = PF_ADDR_DYNIFTL;
1236 set_ipmask(h, 128);
1237 if (strlcpy(h->addr.v.ifname, i->ifname,
1238 sizeof(h->addr.v.ifname)) >=
1239 sizeof(h->addr.v.ifname)) {
1240 free(h);
1241 yyerror(
1242 "interface name too long");
1243 YYERROR;
1244 }
1245 hh = malloc(sizeof(*hh));
1246 if (hh == NULL)
1247 err(1, "address: malloc");
1248 bcopy(h, hh, sizeof(*hh));
1249 h->addr.iflags = PFI_AFLAG_NETWORK;
1250 } else {
1251 h = ifa_lookup(j->ifname,
1252 PFI_AFLAG_NETWORK);
1253 hh = NULL;
1254 }
1255
1256 if (h != NULL)
1257 expand_rule(&r, j, NULL, NULL, NULL, h,
1258 NULL, NULL, NULL, NULL, NULL,
1259 NULL, "");
1260
1261 if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1262 bzero(&r, sizeof(r));
1263
1264 r.action = PF_DROP;
1265 r.direction = PF_IN;
1266 r.log = $2.log;
1267 r.logif = $2.logif;
1268 r.quick = $2.quick;
1269 r.af = $4;
1270 if (rule_label(&r, $5.label))
1271 YYERROR;
1272 r.rtableid = $5.rtableid;
1273 if (hh != NULL)
1274 h = hh;
1275 else
1276 h = ifa_lookup(i->ifname, 0);
1277 if (h != NULL)
1278 expand_rule(&r, NULL, NULL,
1279 NULL, NULL, h, NULL, NULL,
1280 NULL, NULL, NULL, NULL, "");
1281 } else
1282 free(hh);
1283 }
1284 free($5.label);
1285 }
1286 ;
1287
1288antispoof_ifspc : FOR antispoof_if { $$ = $2; }
1289 | FOR '{' optnl antispoof_iflst '}' { $$ = $4; }
1290 ;
1291
1292antispoof_iflst : antispoof_if optnl { $$ = $1; }
1293 | antispoof_iflst comma antispoof_if optnl {
1294 $1->tail->next = $3;
1295 $1->tail = $3;
1296 $$ = $1;
1297 }
1298 ;
1299
1300antispoof_if : if_item { $$ = $1; }
1301 | '(' if_item ')' {
1302 $2->dynamic = 1;
1303 $$ = $2;
1304 }
1305 ;
1306
1307antispoof_opts : {
1308 bzero(&antispoof_opts, sizeof antispoof_opts);
1309 antispoof_opts.rtableid = -1;
1310 }
1311 antispoof_opts_l
1312 { $$ = antispoof_opts; }
1313 | /* empty */ {
1314 bzero(&antispoof_opts, sizeof antispoof_opts);
1315 antispoof_opts.rtableid = -1;
1316 $$ = antispoof_opts;
1317 }
1318 ;
1319
1320antispoof_opts_l : antispoof_opts_l antispoof_opt
1321 | antispoof_opt
1322 ;
1323
1324antispoof_opt : label {
1325 if (antispoof_opts.label) {
1326 yyerror("label cannot be redefined");
1327 YYERROR;
1328 }
1329 antispoof_opts.label = $1;
1330 }
1331 | RTABLE NUMBER {
1332 if ($2 < 0 || $2 > rt_tableid_max()) {
1333 yyerror("invalid rtable id");
1334 YYERROR;
1335 }
1336 antispoof_opts.rtableid = $2;
1337 }
1338 ;
1339
1340not : '!' { $$ = 1; }
1341 | /* empty */ { $$ = 0; }
1342 ;
1343
1344tabledef : TABLE '<' STRING '>' table_opts {
1345 struct node_host *h, *nh;
1346 struct node_tinit *ti, *nti;
1347
1348 if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1349 yyerror("table name too long, max %d chars",
1350 PF_TABLE_NAME_SIZE - 1);
1351 free($3);
1352 YYERROR;
1353 }
1354 if (pf->loadopt & PFCTL_FLAG_TABLE)
1355 if (process_tabledef($3, &$5)) {
1356 free($3);
1357 YYERROR;
1358 }
1359 free($3);
1360 for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1361 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1362 if (ti->file)
1363 free(ti->file);
1364 for (h = ti->host; h != NULL; h = nh) {
1365 nh = h->next;
1366 free(h);
1367 }
1368 nti = SIMPLEQ_NEXT(ti, entries);
1369 free(ti);
1370 }
1371 }
1372 ;
1373
1374table_opts : {
1375 bzero(&table_opts, sizeof table_opts);
1376 SIMPLEQ_INIT(&table_opts.init_nodes);
1377 }
1378 table_opts_l
1379 { $$ = table_opts; }
1380 | /* empty */
1381 {
1382 bzero(&table_opts, sizeof table_opts);
1383 SIMPLEQ_INIT(&table_opts.init_nodes);
1384 $$ = table_opts;
1385 }
1386 ;
1387
1388table_opts_l : table_opts_l table_opt
1389 | table_opt
1390 ;
1391
1392table_opt : STRING {
1393 if (!strcmp($1, "const"))
1394 table_opts.flags |= PFR_TFLAG_CONST;
1395 else if (!strcmp($1, "persist"))
1396 table_opts.flags |= PFR_TFLAG_PERSIST;
1397 else if (!strcmp($1, "counters"))
1398 table_opts.flags |= PFR_TFLAG_COUNTERS;
1399 else {
1400 yyerror("invalid table option '%s'", $1);
1401 free($1);
1402 YYERROR;
1403 }
1404 free($1);
1405 }
1406 | '{' optnl '}' { table_opts.init_addr = 1; }
1407 | '{' optnl host_list '}' {
1408 struct node_host *n;
1409 struct node_tinit *ti;
1410
1411 for (n = $3; n != NULL; n = n->next) {
1412 switch (n->addr.type) {
1413 case PF_ADDR_ADDRMASK:
1414 continue; /* ok */
1415 case PF_ADDR_RANGE:
1416 yyerror("address ranges are not "
1417 "permitted inside tables");
1418 break;
1419 case PF_ADDR_DYNIFTL:
1420 yyerror("dynamic addresses are not "
1421 "permitted inside tables");
1422 break;
1423 case PF_ADDR_TABLE:
1424 yyerror("tables cannot contain tables");
1425 break;
1426 case PF_ADDR_NOROUTE:
1427 yyerror("\"no-route\" is not permitted "
1428 "inside tables");
1429 break;
1430 case PF_ADDR_URPFFAILED:
1431 yyerror("\"urpf-failed\" is not "
1432 "permitted inside tables");
1433 break;
1434 default:
1435 yyerror("unknown address type %d",
1436 n->addr.type);
1437 }
1438 YYERROR;
1439 }
1440 if (!(ti = calloc(1, sizeof(*ti))))
1441 err(1, "table_opt: calloc");
1442 ti->host = $3;
1443 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1444 entries);
1445 table_opts.init_addr = 1;
1446 }
1447 | FILENAME STRING {
1448 struct node_tinit *ti;
1449
1450 if (!(ti = calloc(1, sizeof(*ti))))
1451 err(1, "table_opt: calloc");
1452 ti->file = $2;
1453 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1454 entries);
1455 table_opts.init_addr = 1;
1456 }
1457 ;
1458
1459altqif : ALTQ interface queue_opts QUEUE qassign {
1460 struct pf_altq a;
1461
1462 if (check_rulestate(PFCTL_STATE_QUEUE))
1463 YYERROR;
1464
1465 memset(&a, 0, sizeof(a));
1466 if ($3.scheduler.qtype == ALTQT_NONE) {
1467 yyerror("no scheduler specified!");
1468 YYERROR;
1469 }
1470 a.scheduler = $3.scheduler.qtype;
1471 a.qlimit = $3.qlimit;
1472 a.tbrsize = $3.tbrsize;
| 505%type <v.queue_bwspec> bandwidth
506%type <v.filter_opts> filter_opts filter_opt filter_opts_l
507%type <v.antispoof_opts> antispoof_opts antispoof_opt antispoof_opts_l
508%type <v.queue_opts> queue_opts queue_opt queue_opts_l
509%type <v.scrub_opts> scrub_opts scrub_opt scrub_opts_l
510%type <v.table_opts> table_opts table_opt table_opts_l
511%type <v.pool_opts> pool_opts pool_opt pool_opts_l
512%type <v.tagged> tagged
513%type <v.rtableid> rtable
514%%
515
516ruleset : /* empty */
517 | ruleset include '\n'
518 | ruleset '\n'
519 | ruleset option '\n'
520 | ruleset scrubrule '\n'
521 | ruleset natrule '\n'
522 | ruleset binatrule '\n'
523 | ruleset pfrule '\n'
524 | ruleset anchorrule '\n'
525 | ruleset loadrule '\n'
526 | ruleset altqif '\n'
527 | ruleset queuespec '\n'
528 | ruleset varset '\n'
529 | ruleset antispoof '\n'
530 | ruleset tabledef '\n'
531 | '{' fakeanchor '}' '\n';
532 | ruleset error '\n' { file->errors++; }
533 ;
534
535include : INCLUDE STRING {
536 struct file *nfile;
537
538 if ((nfile = pushfile($2, 0)) == NULL) {
539 yyerror("failed to include file %s", $2);
540 free($2);
541 YYERROR;
542 }
543 free($2);
544
545 file = nfile;
546 lungetc('\n');
547 }
548 ;
549
550/*
551 * apply to previouslys specified rule: must be careful to note
552 * what that is: pf or nat or binat or rdr
553 */
554fakeanchor : fakeanchor '\n'
555 | fakeanchor anchorrule '\n'
556 | fakeanchor binatrule '\n'
557 | fakeanchor natrule '\n'
558 | fakeanchor pfrule '\n'
559 | fakeanchor error '\n'
560 ;
561
562optimizer : string {
563 if (!strcmp($1, "none"))
564 $$ = 0;
565 else if (!strcmp($1, "basic"))
566 $$ = PF_OPTIMIZE_BASIC;
567 else if (!strcmp($1, "profile"))
568 $$ = PF_OPTIMIZE_BASIC | PF_OPTIMIZE_PROFILE;
569 else {
570 yyerror("unknown ruleset-optimization %s", $1);
571 YYERROR;
572 }
573 }
574 ;
575
576option : SET OPTIMIZATION STRING {
577 if (check_rulestate(PFCTL_STATE_OPTION)) {
578 free($3);
579 YYERROR;
580 }
581 if (pfctl_set_optimization(pf, $3) != 0) {
582 yyerror("unknown optimization %s", $3);
583 free($3);
584 YYERROR;
585 }
586 free($3);
587 }
588 | SET RULESET_OPTIMIZATION optimizer {
589 if (!(pf->opts & PF_OPT_OPTIMIZE)) {
590 pf->opts |= PF_OPT_OPTIMIZE;
591 pf->optimize = $3;
592 }
593 }
594 | SET TIMEOUT timeout_spec
595 | SET TIMEOUT '{' optnl timeout_list '}'
596 | SET LIMIT limit_spec
597 | SET LIMIT '{' optnl limit_list '}'
598 | SET LOGINTERFACE stringall {
599 if (check_rulestate(PFCTL_STATE_OPTION)) {
600 free($3);
601 YYERROR;
602 }
603 if (pfctl_set_logif(pf, $3) != 0) {
604 yyerror("error setting loginterface %s", $3);
605 free($3);
606 YYERROR;
607 }
608 free($3);
609 }
610 | SET HOSTID number {
611 if ($3 == 0 || $3 > UINT_MAX) {
612 yyerror("hostid must be non-zero");
613 YYERROR;
614 }
615 if (pfctl_set_hostid(pf, $3) != 0) {
616 yyerror("error setting hostid %08x", $3);
617 YYERROR;
618 }
619 }
620 | SET BLOCKPOLICY DROP {
621 if (pf->opts & PF_OPT_VERBOSE)
622 printf("set block-policy drop\n");
623 if (check_rulestate(PFCTL_STATE_OPTION))
624 YYERROR;
625 blockpolicy = PFRULE_DROP;
626 }
627 | SET BLOCKPOLICY RETURN {
628 if (pf->opts & PF_OPT_VERBOSE)
629 printf("set block-policy return\n");
630 if (check_rulestate(PFCTL_STATE_OPTION))
631 YYERROR;
632 blockpolicy = PFRULE_RETURN;
633 }
634 | SET REQUIREORDER yesno {
635 if (pf->opts & PF_OPT_VERBOSE)
636 printf("set require-order %s\n",
637 $3 == 1 ? "yes" : "no");
638 require_order = $3;
639 }
640 | SET FINGERPRINTS STRING {
641 if (pf->opts & PF_OPT_VERBOSE)
642 printf("set fingerprints \"%s\"\n", $3);
643 if (check_rulestate(PFCTL_STATE_OPTION)) {
644 free($3);
645 YYERROR;
646 }
647 if (!pf->anchor->name[0]) {
648 if (pfctl_file_fingerprints(pf->dev,
649 pf->opts, $3)) {
650 yyerror("error loading "
651 "fingerprints %s", $3);
652 free($3);
653 YYERROR;
654 }
655 }
656 free($3);
657 }
658 | SET STATEPOLICY statelock {
659 if (pf->opts & PF_OPT_VERBOSE)
660 switch ($3) {
661 case 0:
662 printf("set state-policy floating\n");
663 break;
664 case PFRULE_IFBOUND:
665 printf("set state-policy if-bound\n");
666 break;
667 }
668 default_statelock = $3;
669 }
670 | SET DEBUG STRING {
671 if (check_rulestate(PFCTL_STATE_OPTION)) {
672 free($3);
673 YYERROR;
674 }
675 if (pfctl_set_debug(pf, $3) != 0) {
676 yyerror("error setting debuglevel %s", $3);
677 free($3);
678 YYERROR;
679 }
680 free($3);
681 }
682 | SET SKIP interface {
683 if (expand_skip_interface($3) != 0) {
684 yyerror("error setting skip interface(s)");
685 YYERROR;
686 }
687 }
688 | SET STATEDEFAULTS state_opt_list {
689 if (keep_state_defaults != NULL) {
690 yyerror("cannot redefine state-defaults");
691 YYERROR;
692 }
693 keep_state_defaults = $3;
694 }
695 ;
696
697stringall : STRING { $$ = $1; }
698 | ALL {
699 if (($$ = strdup("all")) == NULL) {
700 err(1, "stringall: strdup");
701 }
702 }
703 ;
704
705string : STRING string {
706 if (asprintf(&$$, "%s %s", $1, $2) == -1)
707 err(1, "string: asprintf");
708 free($1);
709 free($2);
710 }
711 | STRING
712 ;
713
714varstring : numberstring varstring {
715 if (asprintf(&$$, "%s %s", $1, $2) == -1)
716 err(1, "string: asprintf");
717 free($1);
718 free($2);
719 }
720 | numberstring
721 ;
722
723numberstring : NUMBER {
724 char *s;
725 if (asprintf(&s, "%lld", (long long)$1) == -1) {
726 yyerror("string: asprintf");
727 YYERROR;
728 }
729 $$ = s;
730 }
731 | STRING
732 ;
733
734varset : STRING '=' varstring {
735 if (pf->opts & PF_OPT_VERBOSE)
736 printf("%s = \"%s\"\n", $1, $3);
737 if (symset($1, $3, 0) == -1)
738 err(1, "cannot store variable %s", $1);
739 free($1);
740 free($3);
741 }
742 ;
743
744anchorname : STRING { $$ = $1; }
745 | /* empty */ { $$ = NULL; }
746 ;
747
748pfa_anchorlist : /* empty */
749 | pfa_anchorlist '\n'
750 | pfa_anchorlist pfrule '\n'
751 | pfa_anchorlist anchorrule '\n'
752 ;
753
754pfa_anchor : '{'
755 {
756 char ta[PF_ANCHOR_NAME_SIZE];
757 struct pf_ruleset *rs;
758
759 /* steping into a brace anchor */
760 pf->asd++;
761 pf->bn++;
762 pf->brace = 1;
763
764 /* create a holding ruleset in the root */
765 snprintf(ta, PF_ANCHOR_NAME_SIZE, "_%d", pf->bn);
766 rs = pf_find_or_create_ruleset(ta);
767 if (rs == NULL)
768 err(1, "pfa_anchor: pf_find_or_create_ruleset");
769 pf->astack[pf->asd] = rs->anchor;
770 pf->anchor = rs->anchor;
771 } '\n' pfa_anchorlist '}'
772 {
773 pf->alast = pf->anchor;
774 pf->asd--;
775 pf->anchor = pf->astack[pf->asd];
776 }
777 | /* empty */
778 ;
779
780anchorrule : ANCHOR anchorname dir quick interface af proto fromto
781 filter_opts pfa_anchor
782 {
783 struct pf_rule r;
784 struct node_proto *proto;
785
786 if (check_rulestate(PFCTL_STATE_FILTER)) {
787 if ($2)
788 free($2);
789 YYERROR;
790 }
791
792 if ($2 && ($2[0] == '_' || strstr($2, "/_") != NULL)) {
793 free($2);
794 yyerror("anchor names beginning with '_' "
795 "are reserved for internal use");
796 YYERROR;
797 }
798
799 memset(&r, 0, sizeof(r));
800 if (pf->astack[pf->asd + 1]) {
801 /* move inline rules into relative location */
802 pf_anchor_setup(&r,
803 &pf->astack[pf->asd]->ruleset,
804 $2 ? $2 : pf->alast->name);
805
806 if (r.anchor == NULL)
807 err(1, "anchorrule: unable to "
808 "create ruleset");
809
810 if (pf->alast != r.anchor) {
811 if (r.anchor->match) {
812 yyerror("inline anchor '%s' "
813 "already exists",
814 r.anchor->name);
815 YYERROR;
816 }
817 mv_rules(&pf->alast->ruleset,
818 &r.anchor->ruleset);
819 }
820 pf_remove_if_empty_ruleset(&pf->alast->ruleset);
821 pf->alast = r.anchor;
822 } else {
823 if (!$2) {
824 yyerror("anchors without explicit "
825 "rules must specify a name");
826 YYERROR;
827 }
828 }
829 r.direction = $3;
830 r.quick = $4.quick;
831 r.af = $6;
832 r.prob = $9.prob;
833 r.rtableid = $9.rtableid;
834
835 if ($9.tag)
836 if (strlcpy(r.tagname, $9.tag,
837 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
838 yyerror("tag too long, max %u chars",
839 PF_TAG_NAME_SIZE - 1);
840 YYERROR;
841 }
842 if ($9.match_tag)
843 if (strlcpy(r.match_tagname, $9.match_tag,
844 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
845 yyerror("tag too long, max %u chars",
846 PF_TAG_NAME_SIZE - 1);
847 YYERROR;
848 }
849 r.match_tag_not = $9.match_tag_not;
850 if (rule_label(&r, $9.label))
851 YYERROR;
852 free($9.label);
853 r.flags = $9.flags.b1;
854 r.flagset = $9.flags.b2;
855 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
856 yyerror("flags always false");
857 YYERROR;
858 }
859 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
860 for (proto = $7; proto != NULL &&
861 proto->proto != IPPROTO_TCP;
862 proto = proto->next)
863 ; /* nothing */
864 if (proto == NULL && $7 != NULL) {
865 if ($9.flags.b1 || $9.flags.b2)
866 yyerror(
867 "flags only apply to tcp");
868 if ($8.src_os)
869 yyerror(
870 "OS fingerprinting only "
871 "applies to tcp");
872 YYERROR;
873 }
874 }
875
876 r.tos = $9.tos;
877
878 if ($9.keep.action) {
879 yyerror("cannot specify state handling "
880 "on anchors");
881 YYERROR;
882 }
883
884 if ($9.match_tag)
885 if (strlcpy(r.match_tagname, $9.match_tag,
886 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
887 yyerror("tag too long, max %u chars",
888 PF_TAG_NAME_SIZE - 1);
889 YYERROR;
890 }
891 r.match_tag_not = $9.match_tag_not;
892
893 decide_address_family($8.src.host, &r.af);
894 decide_address_family($8.dst.host, &r.af);
895
896 expand_rule(&r, $5, NULL, $7, $8.src_os,
897 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
898 $9.uid, $9.gid, $9.icmpspec,
899 pf->astack[pf->asd + 1] ? pf->alast->name : $2);
900 free($2);
901 pf->astack[pf->asd + 1] = NULL;
902 }
903 | NATANCHOR string interface af proto fromto rtable {
904 struct pf_rule r;
905
906 if (check_rulestate(PFCTL_STATE_NAT)) {
907 free($2);
908 YYERROR;
909 }
910
911 memset(&r, 0, sizeof(r));
912 r.action = PF_NAT;
913 r.af = $4;
914 r.rtableid = $7;
915
916 decide_address_family($6.src.host, &r.af);
917 decide_address_family($6.dst.host, &r.af);
918
919 expand_rule(&r, $3, NULL, $5, $6.src_os,
920 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
921 0, 0, 0, $2);
922 free($2);
923 }
924 | RDRANCHOR string interface af proto fromto rtable {
925 struct pf_rule r;
926
927 if (check_rulestate(PFCTL_STATE_NAT)) {
928 free($2);
929 YYERROR;
930 }
931
932 memset(&r, 0, sizeof(r));
933 r.action = PF_RDR;
934 r.af = $4;
935 r.rtableid = $7;
936
937 decide_address_family($6.src.host, &r.af);
938 decide_address_family($6.dst.host, &r.af);
939
940 if ($6.src.port != NULL) {
941 yyerror("source port parameter not supported"
942 " in rdr-anchor");
943 YYERROR;
944 }
945 if ($6.dst.port != NULL) {
946 if ($6.dst.port->next != NULL) {
947 yyerror("destination port list "
948 "expansion not supported in "
949 "rdr-anchor");
950 YYERROR;
951 } else if ($6.dst.port->op != PF_OP_EQ) {
952 yyerror("destination port operators"
953 " not supported in rdr-anchor");
954 YYERROR;
955 }
956 r.dst.port[0] = $6.dst.port->port[0];
957 r.dst.port[1] = $6.dst.port->port[1];
958 r.dst.port_op = $6.dst.port->op;
959 }
960
961 expand_rule(&r, $3, NULL, $5, $6.src_os,
962 $6.src.host, $6.src.port, $6.dst.host, $6.dst.port,
963 0, 0, 0, $2);
964 free($2);
965 }
966 | BINATANCHOR string interface af proto fromto rtable {
967 struct pf_rule r;
968
969 if (check_rulestate(PFCTL_STATE_NAT)) {
970 free($2);
971 YYERROR;
972 }
973
974 memset(&r, 0, sizeof(r));
975 r.action = PF_BINAT;
976 r.af = $4;
977 r.rtableid = $7;
978 if ($5 != NULL) {
979 if ($5->next != NULL) {
980 yyerror("proto list expansion"
981 " not supported in binat-anchor");
982 YYERROR;
983 }
984 r.proto = $5->proto;
985 free($5);
986 }
987
988 if ($6.src.host != NULL || $6.src.port != NULL ||
989 $6.dst.host != NULL || $6.dst.port != NULL) {
990 yyerror("fromto parameter not supported"
991 " in binat-anchor");
992 YYERROR;
993 }
994
995 decide_address_family($6.src.host, &r.af);
996 decide_address_family($6.dst.host, &r.af);
997
998 pfctl_add_rule(pf, &r, $2);
999 free($2);
1000 }
1001 ;
1002
1003loadrule : LOAD ANCHOR string FROM string {
1004 struct loadanchors *loadanchor;
1005
1006 if (strlen(pf->anchor->name) + 1 +
1007 strlen($3) >= MAXPATHLEN) {
1008 yyerror("anchorname %s too long, max %u\n",
1009 $3, MAXPATHLEN - 1);
1010 free($3);
1011 YYERROR;
1012 }
1013 loadanchor = calloc(1, sizeof(struct loadanchors));
1014 if (loadanchor == NULL)
1015 err(1, "loadrule: calloc");
1016 if ((loadanchor->anchorname = malloc(MAXPATHLEN)) ==
1017 NULL)
1018 err(1, "loadrule: malloc");
1019 if (pf->anchor->name[0])
1020 snprintf(loadanchor->anchorname, MAXPATHLEN,
1021 "%s/%s", pf->anchor->name, $3);
1022 else
1023 strlcpy(loadanchor->anchorname, $3, MAXPATHLEN);
1024 if ((loadanchor->filename = strdup($5)) == NULL)
1025 err(1, "loadrule: strdup");
1026
1027 TAILQ_INSERT_TAIL(&loadanchorshead, loadanchor,
1028 entries);
1029
1030 free($3);
1031 free($5);
1032 };
1033
1034scrubaction : no SCRUB {
1035 $$.b2 = $$.w = 0;
1036 if ($1)
1037 $$.b1 = PF_NOSCRUB;
1038 else
1039 $$.b1 = PF_SCRUB;
1040 }
1041 ;
1042
1043scrubrule : scrubaction dir logquick interface af proto fromto scrub_opts
1044 {
1045 struct pf_rule r;
1046
1047 if (check_rulestate(PFCTL_STATE_SCRUB))
1048 YYERROR;
1049
1050 memset(&r, 0, sizeof(r));
1051
1052 r.action = $1.b1;
1053 r.direction = $2;
1054
1055 r.log = $3.log;
1056 r.logif = $3.logif;
1057 if ($3.quick) {
1058 yyerror("scrub rules do not support 'quick'");
1059 YYERROR;
1060 }
1061
1062 r.af = $5;
1063 if ($8.nodf)
1064 r.rule_flag |= PFRULE_NODF;
1065 if ($8.randomid)
1066 r.rule_flag |= PFRULE_RANDOMID;
1067 if ($8.reassemble_tcp) {
1068 if (r.direction != PF_INOUT) {
1069 yyerror("reassemble tcp rules can not "
1070 "specify direction");
1071 YYERROR;
1072 }
1073 r.rule_flag |= PFRULE_REASSEMBLE_TCP;
1074 }
1075 if ($8.minttl)
1076 r.min_ttl = $8.minttl;
1077 if ($8.maxmss)
1078 r.max_mss = $8.maxmss;
1079 if ($8.marker & SOM_SETTOS) {
1080 r.rule_flag |= PFRULE_SET_TOS;
1081 r.set_tos = $8.settos;
1082 }
1083 if ($8.fragcache)
1084 r.rule_flag |= $8.fragcache;
1085 if ($8.match_tag)
1086 if (strlcpy(r.match_tagname, $8.match_tag,
1087 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1088 yyerror("tag too long, max %u chars",
1089 PF_TAG_NAME_SIZE - 1);
1090 YYERROR;
1091 }
1092 r.match_tag_not = $8.match_tag_not;
1093 r.rtableid = $8.rtableid;
1094
1095 expand_rule(&r, $4, NULL, $6, $7.src_os,
1096 $7.src.host, $7.src.port, $7.dst.host, $7.dst.port,
1097 NULL, NULL, NULL, "");
1098 }
1099 ;
1100
1101scrub_opts : {
1102 bzero(&scrub_opts, sizeof scrub_opts);
1103 scrub_opts.rtableid = -1;
1104 }
1105 scrub_opts_l
1106 { $$ = scrub_opts; }
1107 | /* empty */ {
1108 bzero(&scrub_opts, sizeof scrub_opts);
1109 scrub_opts.rtableid = -1;
1110 $$ = scrub_opts;
1111 }
1112 ;
1113
1114scrub_opts_l : scrub_opts_l scrub_opt
1115 | scrub_opt
1116 ;
1117
1118scrub_opt : NODF {
1119 if (scrub_opts.nodf) {
1120 yyerror("no-df cannot be respecified");
1121 YYERROR;
1122 }
1123 scrub_opts.nodf = 1;
1124 }
1125 | MINTTL NUMBER {
1126 if (scrub_opts.marker & SOM_MINTTL) {
1127 yyerror("min-ttl cannot be respecified");
1128 YYERROR;
1129 }
1130 if ($2 < 0 || $2 > 255) {
1131 yyerror("illegal min-ttl value %d", $2);
1132 YYERROR;
1133 }
1134 scrub_opts.marker |= SOM_MINTTL;
1135 scrub_opts.minttl = $2;
1136 }
1137 | MAXMSS NUMBER {
1138 if (scrub_opts.marker & SOM_MAXMSS) {
1139 yyerror("max-mss cannot be respecified");
1140 YYERROR;
1141 }
1142 if ($2 < 0 || $2 > 65535) {
1143 yyerror("illegal max-mss value %d", $2);
1144 YYERROR;
1145 }
1146 scrub_opts.marker |= SOM_MAXMSS;
1147 scrub_opts.maxmss = $2;
1148 }
1149 | SETTOS tos {
1150 if (scrub_opts.marker & SOM_SETTOS) {
1151 yyerror("set-tos cannot be respecified");
1152 YYERROR;
1153 }
1154 scrub_opts.marker |= SOM_SETTOS;
1155 scrub_opts.settos = $2;
1156 }
1157 | fragcache {
1158 if (scrub_opts.marker & SOM_FRAGCACHE) {
1159 yyerror("fragcache cannot be respecified");
1160 YYERROR;
1161 }
1162 scrub_opts.marker |= SOM_FRAGCACHE;
1163 scrub_opts.fragcache = $1;
1164 }
1165 | REASSEMBLE STRING {
1166 if (strcasecmp($2, "tcp") != 0) {
1167 yyerror("scrub reassemble supports only tcp, "
1168 "not '%s'", $2);
1169 free($2);
1170 YYERROR;
1171 }
1172 free($2);
1173 if (scrub_opts.reassemble_tcp) {
1174 yyerror("reassemble tcp cannot be respecified");
1175 YYERROR;
1176 }
1177 scrub_opts.reassemble_tcp = 1;
1178 }
1179 | RANDOMID {
1180 if (scrub_opts.randomid) {
1181 yyerror("random-id cannot be respecified");
1182 YYERROR;
1183 }
1184 scrub_opts.randomid = 1;
1185 }
1186 | RTABLE NUMBER {
1187 if ($2 < 0 || $2 > rt_tableid_max()) {
1188 yyerror("invalid rtable id");
1189 YYERROR;
1190 }
1191 scrub_opts.rtableid = $2;
1192 }
1193 | not TAGGED string {
1194 scrub_opts.match_tag = $3;
1195 scrub_opts.match_tag_not = $1;
1196 }
1197 ;
1198
1199fragcache : FRAGMENT REASSEMBLE { $$ = 0; /* default */ }
1200 | FRAGMENT FRAGCROP { $$ = PFRULE_FRAGCROP; }
1201 | FRAGMENT FRAGDROP { $$ = PFRULE_FRAGDROP; }
1202 ;
1203
1204antispoof : ANTISPOOF logquick antispoof_ifspc af antispoof_opts {
1205 struct pf_rule r;
1206 struct node_host *h = NULL, *hh;
1207 struct node_if *i, *j;
1208
1209 if (check_rulestate(PFCTL_STATE_FILTER))
1210 YYERROR;
1211
1212 for (i = $3; i; i = i->next) {
1213 bzero(&r, sizeof(r));
1214
1215 r.action = PF_DROP;
1216 r.direction = PF_IN;
1217 r.log = $2.log;
1218 r.logif = $2.logif;
1219 r.quick = $2.quick;
1220 r.af = $4;
1221 if (rule_label(&r, $5.label))
1222 YYERROR;
1223 r.rtableid = $5.rtableid;
1224 j = calloc(1, sizeof(struct node_if));
1225 if (j == NULL)
1226 err(1, "antispoof: calloc");
1227 if (strlcpy(j->ifname, i->ifname,
1228 sizeof(j->ifname)) >= sizeof(j->ifname)) {
1229 free(j);
1230 yyerror("interface name too long");
1231 YYERROR;
1232 }
1233 j->not = 1;
1234 if (i->dynamic) {
1235 h = calloc(1, sizeof(*h));
1236 if (h == NULL)
1237 err(1, "address: calloc");
1238 h->addr.type = PF_ADDR_DYNIFTL;
1239 set_ipmask(h, 128);
1240 if (strlcpy(h->addr.v.ifname, i->ifname,
1241 sizeof(h->addr.v.ifname)) >=
1242 sizeof(h->addr.v.ifname)) {
1243 free(h);
1244 yyerror(
1245 "interface name too long");
1246 YYERROR;
1247 }
1248 hh = malloc(sizeof(*hh));
1249 if (hh == NULL)
1250 err(1, "address: malloc");
1251 bcopy(h, hh, sizeof(*hh));
1252 h->addr.iflags = PFI_AFLAG_NETWORK;
1253 } else {
1254 h = ifa_lookup(j->ifname,
1255 PFI_AFLAG_NETWORK);
1256 hh = NULL;
1257 }
1258
1259 if (h != NULL)
1260 expand_rule(&r, j, NULL, NULL, NULL, h,
1261 NULL, NULL, NULL, NULL, NULL,
1262 NULL, "");
1263
1264 if ((i->ifa_flags & IFF_LOOPBACK) == 0) {
1265 bzero(&r, sizeof(r));
1266
1267 r.action = PF_DROP;
1268 r.direction = PF_IN;
1269 r.log = $2.log;
1270 r.logif = $2.logif;
1271 r.quick = $2.quick;
1272 r.af = $4;
1273 if (rule_label(&r, $5.label))
1274 YYERROR;
1275 r.rtableid = $5.rtableid;
1276 if (hh != NULL)
1277 h = hh;
1278 else
1279 h = ifa_lookup(i->ifname, 0);
1280 if (h != NULL)
1281 expand_rule(&r, NULL, NULL,
1282 NULL, NULL, h, NULL, NULL,
1283 NULL, NULL, NULL, NULL, "");
1284 } else
1285 free(hh);
1286 }
1287 free($5.label);
1288 }
1289 ;
1290
1291antispoof_ifspc : FOR antispoof_if { $$ = $2; }
1292 | FOR '{' optnl antispoof_iflst '}' { $$ = $4; }
1293 ;
1294
1295antispoof_iflst : antispoof_if optnl { $$ = $1; }
1296 | antispoof_iflst comma antispoof_if optnl {
1297 $1->tail->next = $3;
1298 $1->tail = $3;
1299 $$ = $1;
1300 }
1301 ;
1302
1303antispoof_if : if_item { $$ = $1; }
1304 | '(' if_item ')' {
1305 $2->dynamic = 1;
1306 $$ = $2;
1307 }
1308 ;
1309
1310antispoof_opts : {
1311 bzero(&antispoof_opts, sizeof antispoof_opts);
1312 antispoof_opts.rtableid = -1;
1313 }
1314 antispoof_opts_l
1315 { $$ = antispoof_opts; }
1316 | /* empty */ {
1317 bzero(&antispoof_opts, sizeof antispoof_opts);
1318 antispoof_opts.rtableid = -1;
1319 $$ = antispoof_opts;
1320 }
1321 ;
1322
1323antispoof_opts_l : antispoof_opts_l antispoof_opt
1324 | antispoof_opt
1325 ;
1326
1327antispoof_opt : label {
1328 if (antispoof_opts.label) {
1329 yyerror("label cannot be redefined");
1330 YYERROR;
1331 }
1332 antispoof_opts.label = $1;
1333 }
1334 | RTABLE NUMBER {
1335 if ($2 < 0 || $2 > rt_tableid_max()) {
1336 yyerror("invalid rtable id");
1337 YYERROR;
1338 }
1339 antispoof_opts.rtableid = $2;
1340 }
1341 ;
1342
1343not : '!' { $$ = 1; }
1344 | /* empty */ { $$ = 0; }
1345 ;
1346
1347tabledef : TABLE '<' STRING '>' table_opts {
1348 struct node_host *h, *nh;
1349 struct node_tinit *ti, *nti;
1350
1351 if (strlen($3) >= PF_TABLE_NAME_SIZE) {
1352 yyerror("table name too long, max %d chars",
1353 PF_TABLE_NAME_SIZE - 1);
1354 free($3);
1355 YYERROR;
1356 }
1357 if (pf->loadopt & PFCTL_FLAG_TABLE)
1358 if (process_tabledef($3, &$5)) {
1359 free($3);
1360 YYERROR;
1361 }
1362 free($3);
1363 for (ti = SIMPLEQ_FIRST(&$5.init_nodes);
1364 ti != SIMPLEQ_END(&$5.init_nodes); ti = nti) {
1365 if (ti->file)
1366 free(ti->file);
1367 for (h = ti->host; h != NULL; h = nh) {
1368 nh = h->next;
1369 free(h);
1370 }
1371 nti = SIMPLEQ_NEXT(ti, entries);
1372 free(ti);
1373 }
1374 }
1375 ;
1376
1377table_opts : {
1378 bzero(&table_opts, sizeof table_opts);
1379 SIMPLEQ_INIT(&table_opts.init_nodes);
1380 }
1381 table_opts_l
1382 { $$ = table_opts; }
1383 | /* empty */
1384 {
1385 bzero(&table_opts, sizeof table_opts);
1386 SIMPLEQ_INIT(&table_opts.init_nodes);
1387 $$ = table_opts;
1388 }
1389 ;
1390
1391table_opts_l : table_opts_l table_opt
1392 | table_opt
1393 ;
1394
1395table_opt : STRING {
1396 if (!strcmp($1, "const"))
1397 table_opts.flags |= PFR_TFLAG_CONST;
1398 else if (!strcmp($1, "persist"))
1399 table_opts.flags |= PFR_TFLAG_PERSIST;
1400 else if (!strcmp($1, "counters"))
1401 table_opts.flags |= PFR_TFLAG_COUNTERS;
1402 else {
1403 yyerror("invalid table option '%s'", $1);
1404 free($1);
1405 YYERROR;
1406 }
1407 free($1);
1408 }
1409 | '{' optnl '}' { table_opts.init_addr = 1; }
1410 | '{' optnl host_list '}' {
1411 struct node_host *n;
1412 struct node_tinit *ti;
1413
1414 for (n = $3; n != NULL; n = n->next) {
1415 switch (n->addr.type) {
1416 case PF_ADDR_ADDRMASK:
1417 continue; /* ok */
1418 case PF_ADDR_RANGE:
1419 yyerror("address ranges are not "
1420 "permitted inside tables");
1421 break;
1422 case PF_ADDR_DYNIFTL:
1423 yyerror("dynamic addresses are not "
1424 "permitted inside tables");
1425 break;
1426 case PF_ADDR_TABLE:
1427 yyerror("tables cannot contain tables");
1428 break;
1429 case PF_ADDR_NOROUTE:
1430 yyerror("\"no-route\" is not permitted "
1431 "inside tables");
1432 break;
1433 case PF_ADDR_URPFFAILED:
1434 yyerror("\"urpf-failed\" is not "
1435 "permitted inside tables");
1436 break;
1437 default:
1438 yyerror("unknown address type %d",
1439 n->addr.type);
1440 }
1441 YYERROR;
1442 }
1443 if (!(ti = calloc(1, sizeof(*ti))))
1444 err(1, "table_opt: calloc");
1445 ti->host = $3;
1446 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1447 entries);
1448 table_opts.init_addr = 1;
1449 }
1450 | FILENAME STRING {
1451 struct node_tinit *ti;
1452
1453 if (!(ti = calloc(1, sizeof(*ti))))
1454 err(1, "table_opt: calloc");
1455 ti->file = $2;
1456 SIMPLEQ_INSERT_TAIL(&table_opts.init_nodes, ti,
1457 entries);
1458 table_opts.init_addr = 1;
1459 }
1460 ;
1461
1462altqif : ALTQ interface queue_opts QUEUE qassign {
1463 struct pf_altq a;
1464
1465 if (check_rulestate(PFCTL_STATE_QUEUE))
1466 YYERROR;
1467
1468 memset(&a, 0, sizeof(a));
1469 if ($3.scheduler.qtype == ALTQT_NONE) {
1470 yyerror("no scheduler specified!");
1471 YYERROR;
1472 }
1473 a.scheduler = $3.scheduler.qtype;
1474 a.qlimit = $3.qlimit;
1475 a.tbrsize = $3.tbrsize;
|
1473 if ($5 == NULL) {
| 1476 if ($5 == NULL && $3.scheduler.qtype != ALTQT_CODEL) {
|
1474 yyerror("no child queues specified");
1475 YYERROR;
1476 }
1477 if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1478 &$3.scheduler))
1479 YYERROR;
1480 }
1481 ;
1482
1483queuespec : QUEUE STRING interface queue_opts qassign {
1484 struct pf_altq a;
1485
1486 if (check_rulestate(PFCTL_STATE_QUEUE)) {
1487 free($2);
1488 YYERROR;
1489 }
1490
1491 memset(&a, 0, sizeof(a));
1492
1493 if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1494 sizeof(a.qname)) {
1495 yyerror("queue name too long (max "
1496 "%d chars)", PF_QNAME_SIZE-1);
1497 free($2);
1498 YYERROR;
1499 }
1500 free($2);
1501 if ($4.tbrsize) {
1502 yyerror("cannot specify tbrsize for queue");
1503 YYERROR;
1504 }
1505 if ($4.priority > 255) {
1506 yyerror("priority out of range: max 255");
1507 YYERROR;
1508 }
1509 a.priority = $4.priority;
1510 a.qlimit = $4.qlimit;
1511 a.scheduler = $4.scheduler.qtype;
1512 if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1513 &$4.scheduler)) {
1514 yyerror("errors in queue definition");
1515 YYERROR;
1516 }
1517 }
1518 ;
1519
1520queue_opts : {
1521 bzero(&queue_opts, sizeof queue_opts);
1522 queue_opts.priority = DEFAULT_PRIORITY;
1523 queue_opts.qlimit = DEFAULT_QLIMIT;
1524 queue_opts.scheduler.qtype = ALTQT_NONE;
1525 queue_opts.queue_bwspec.bw_percent = 100;
1526 }
1527 queue_opts_l
1528 { $$ = queue_opts; }
1529 | /* empty */ {
1530 bzero(&queue_opts, sizeof queue_opts);
1531 queue_opts.priority = DEFAULT_PRIORITY;
1532 queue_opts.qlimit = DEFAULT_QLIMIT;
1533 queue_opts.scheduler.qtype = ALTQT_NONE;
1534 queue_opts.queue_bwspec.bw_percent = 100;
1535 $$ = queue_opts;
1536 }
1537 ;
1538
1539queue_opts_l : queue_opts_l queue_opt
1540 | queue_opt
1541 ;
1542
1543queue_opt : BANDWIDTH bandwidth {
1544 if (queue_opts.marker & QOM_BWSPEC) {
1545 yyerror("bandwidth cannot be respecified");
1546 YYERROR;
1547 }
1548 queue_opts.marker |= QOM_BWSPEC;
1549 queue_opts.queue_bwspec = $2;
1550 }
1551 | PRIORITY NUMBER {
1552 if (queue_opts.marker & QOM_PRIORITY) {
1553 yyerror("priority cannot be respecified");
1554 YYERROR;
1555 }
1556 if ($2 < 0 || $2 > 255) {
1557 yyerror("priority out of range: max 255");
1558 YYERROR;
1559 }
1560 queue_opts.marker |= QOM_PRIORITY;
1561 queue_opts.priority = $2;
1562 }
1563 | QLIMIT NUMBER {
1564 if (queue_opts.marker & QOM_QLIMIT) {
1565 yyerror("qlimit cannot be respecified");
1566 YYERROR;
1567 }
1568 if ($2 < 0 || $2 > 65535) {
1569 yyerror("qlimit out of range: max 65535");
1570 YYERROR;
1571 }
1572 queue_opts.marker |= QOM_QLIMIT;
1573 queue_opts.qlimit = $2;
1574 }
1575 | scheduler {
1576 if (queue_opts.marker & QOM_SCHEDULER) {
1577 yyerror("scheduler cannot be respecified");
1578 YYERROR;
1579 }
1580 queue_opts.marker |= QOM_SCHEDULER;
1581 queue_opts.scheduler = $1;
1582 }
1583 | TBRSIZE NUMBER {
1584 if (queue_opts.marker & QOM_TBRSIZE) {
1585 yyerror("tbrsize cannot be respecified");
1586 YYERROR;
1587 }
1588 if ($2 < 0 || $2 > 65535) {
1589 yyerror("tbrsize too big: max 65535");
1590 YYERROR;
1591 }
1592 queue_opts.marker |= QOM_TBRSIZE;
1593 queue_opts.tbrsize = $2;
1594 }
1595 ;
1596
1597bandwidth : STRING {
1598 double bps;
1599 char *cp;
1600
1601 $$.bw_percent = 0;
1602
1603 bps = strtod($1, &cp);
1604 if (cp != NULL) {
1605 if (!strcmp(cp, "b"))
1606 ; /* nothing */
1607 else if (!strcmp(cp, "Kb"))
1608 bps *= 1000;
1609 else if (!strcmp(cp, "Mb"))
1610 bps *= 1000 * 1000;
1611 else if (!strcmp(cp, "Gb"))
1612 bps *= 1000 * 1000 * 1000;
1613 else if (!strcmp(cp, "%")) {
1614 if (bps < 0 || bps > 100) {
1615 yyerror("bandwidth spec "
1616 "out of range");
1617 free($1);
1618 YYERROR;
1619 }
1620 $$.bw_percent = bps;
1621 bps = 0;
1622 } else {
1623 yyerror("unknown unit %s", cp);
1624 free($1);
1625 YYERROR;
1626 }
1627 }
1628 free($1);
1629 $$.bw_absolute = (u_int32_t)bps;
1630 }
1631 | NUMBER {
1632 if ($1 < 0 || $1 > UINT_MAX) {
1633 yyerror("bandwidth number too big");
1634 YYERROR;
1635 }
1636 $$.bw_percent = 0;
1637 $$.bw_absolute = $1;
1638 }
1639 ;
1640
1641scheduler : CBQ {
1642 $$.qtype = ALTQT_CBQ;
1643 $$.data.cbq_opts.flags = 0;
1644 }
1645 | CBQ '(' cbqflags_list ')' {
1646 $$.qtype = ALTQT_CBQ;
1647 $$.data.cbq_opts.flags = $3;
1648 }
1649 | PRIQ {
1650 $$.qtype = ALTQT_PRIQ;
1651 $$.data.priq_opts.flags = 0;
1652 }
1653 | PRIQ '(' priqflags_list ')' {
1654 $$.qtype = ALTQT_PRIQ;
1655 $$.data.priq_opts.flags = $3;
1656 }
1657 | HFSC {
1658 $$.qtype = ALTQT_HFSC;
1659 bzero(&$$.data.hfsc_opts,
1660 sizeof(struct node_hfsc_opts));
1661 }
1662 | HFSC '(' hfsc_opts ')' {
1663 $$.qtype = ALTQT_HFSC;
1664 $$.data.hfsc_opts = $3;
1665 }
1666 | FAIRQ {
1667 $$.qtype = ALTQT_FAIRQ;
1668 bzero(&$$.data.fairq_opts,
1669 sizeof(struct node_fairq_opts));
1670 }
1671 | FAIRQ '(' fairq_opts ')' {
1672 $$.qtype = ALTQT_FAIRQ;
1673 $$.data.fairq_opts = $3;
1674 }
| 1477 yyerror("no child queues specified");
1478 YYERROR;
1479 }
1480 if (expand_altq(&a, $2, $5, $3.queue_bwspec,
1481 &$3.scheduler))
1482 YYERROR;
1483 }
1484 ;
1485
1486queuespec : QUEUE STRING interface queue_opts qassign {
1487 struct pf_altq a;
1488
1489 if (check_rulestate(PFCTL_STATE_QUEUE)) {
1490 free($2);
1491 YYERROR;
1492 }
1493
1494 memset(&a, 0, sizeof(a));
1495
1496 if (strlcpy(a.qname, $2, sizeof(a.qname)) >=
1497 sizeof(a.qname)) {
1498 yyerror("queue name too long (max "
1499 "%d chars)", PF_QNAME_SIZE-1);
1500 free($2);
1501 YYERROR;
1502 }
1503 free($2);
1504 if ($4.tbrsize) {
1505 yyerror("cannot specify tbrsize for queue");
1506 YYERROR;
1507 }
1508 if ($4.priority > 255) {
1509 yyerror("priority out of range: max 255");
1510 YYERROR;
1511 }
1512 a.priority = $4.priority;
1513 a.qlimit = $4.qlimit;
1514 a.scheduler = $4.scheduler.qtype;
1515 if (expand_queue(&a, $3, $5, $4.queue_bwspec,
1516 &$4.scheduler)) {
1517 yyerror("errors in queue definition");
1518 YYERROR;
1519 }
1520 }
1521 ;
1522
1523queue_opts : {
1524 bzero(&queue_opts, sizeof queue_opts);
1525 queue_opts.priority = DEFAULT_PRIORITY;
1526 queue_opts.qlimit = DEFAULT_QLIMIT;
1527 queue_opts.scheduler.qtype = ALTQT_NONE;
1528 queue_opts.queue_bwspec.bw_percent = 100;
1529 }
1530 queue_opts_l
1531 { $$ = queue_opts; }
1532 | /* empty */ {
1533 bzero(&queue_opts, sizeof queue_opts);
1534 queue_opts.priority = DEFAULT_PRIORITY;
1535 queue_opts.qlimit = DEFAULT_QLIMIT;
1536 queue_opts.scheduler.qtype = ALTQT_NONE;
1537 queue_opts.queue_bwspec.bw_percent = 100;
1538 $$ = queue_opts;
1539 }
1540 ;
1541
1542queue_opts_l : queue_opts_l queue_opt
1543 | queue_opt
1544 ;
1545
1546queue_opt : BANDWIDTH bandwidth {
1547 if (queue_opts.marker & QOM_BWSPEC) {
1548 yyerror("bandwidth cannot be respecified");
1549 YYERROR;
1550 }
1551 queue_opts.marker |= QOM_BWSPEC;
1552 queue_opts.queue_bwspec = $2;
1553 }
1554 | PRIORITY NUMBER {
1555 if (queue_opts.marker & QOM_PRIORITY) {
1556 yyerror("priority cannot be respecified");
1557 YYERROR;
1558 }
1559 if ($2 < 0 || $2 > 255) {
1560 yyerror("priority out of range: max 255");
1561 YYERROR;
1562 }
1563 queue_opts.marker |= QOM_PRIORITY;
1564 queue_opts.priority = $2;
1565 }
1566 | QLIMIT NUMBER {
1567 if (queue_opts.marker & QOM_QLIMIT) {
1568 yyerror("qlimit cannot be respecified");
1569 YYERROR;
1570 }
1571 if ($2 < 0 || $2 > 65535) {
1572 yyerror("qlimit out of range: max 65535");
1573 YYERROR;
1574 }
1575 queue_opts.marker |= QOM_QLIMIT;
1576 queue_opts.qlimit = $2;
1577 }
1578 | scheduler {
1579 if (queue_opts.marker & QOM_SCHEDULER) {
1580 yyerror("scheduler cannot be respecified");
1581 YYERROR;
1582 }
1583 queue_opts.marker |= QOM_SCHEDULER;
1584 queue_opts.scheduler = $1;
1585 }
1586 | TBRSIZE NUMBER {
1587 if (queue_opts.marker & QOM_TBRSIZE) {
1588 yyerror("tbrsize cannot be respecified");
1589 YYERROR;
1590 }
1591 if ($2 < 0 || $2 > 65535) {
1592 yyerror("tbrsize too big: max 65535");
1593 YYERROR;
1594 }
1595 queue_opts.marker |= QOM_TBRSIZE;
1596 queue_opts.tbrsize = $2;
1597 }
1598 ;
1599
1600bandwidth : STRING {
1601 double bps;
1602 char *cp;
1603
1604 $$.bw_percent = 0;
1605
1606 bps = strtod($1, &cp);
1607 if (cp != NULL) {
1608 if (!strcmp(cp, "b"))
1609 ; /* nothing */
1610 else if (!strcmp(cp, "Kb"))
1611 bps *= 1000;
1612 else if (!strcmp(cp, "Mb"))
1613 bps *= 1000 * 1000;
1614 else if (!strcmp(cp, "Gb"))
1615 bps *= 1000 * 1000 * 1000;
1616 else if (!strcmp(cp, "%")) {
1617 if (bps < 0 || bps > 100) {
1618 yyerror("bandwidth spec "
1619 "out of range");
1620 free($1);
1621 YYERROR;
1622 }
1623 $$.bw_percent = bps;
1624 bps = 0;
1625 } else {
1626 yyerror("unknown unit %s", cp);
1627 free($1);
1628 YYERROR;
1629 }
1630 }
1631 free($1);
1632 $$.bw_absolute = (u_int32_t)bps;
1633 }
1634 | NUMBER {
1635 if ($1 < 0 || $1 > UINT_MAX) {
1636 yyerror("bandwidth number too big");
1637 YYERROR;
1638 }
1639 $$.bw_percent = 0;
1640 $$.bw_absolute = $1;
1641 }
1642 ;
1643
1644scheduler : CBQ {
1645 $$.qtype = ALTQT_CBQ;
1646 $$.data.cbq_opts.flags = 0;
1647 }
1648 | CBQ '(' cbqflags_list ')' {
1649 $$.qtype = ALTQT_CBQ;
1650 $$.data.cbq_opts.flags = $3;
1651 }
1652 | PRIQ {
1653 $$.qtype = ALTQT_PRIQ;
1654 $$.data.priq_opts.flags = 0;
1655 }
1656 | PRIQ '(' priqflags_list ')' {
1657 $$.qtype = ALTQT_PRIQ;
1658 $$.data.priq_opts.flags = $3;
1659 }
1660 | HFSC {
1661 $$.qtype = ALTQT_HFSC;
1662 bzero(&$$.data.hfsc_opts,
1663 sizeof(struct node_hfsc_opts));
1664 }
1665 | HFSC '(' hfsc_opts ')' {
1666 $$.qtype = ALTQT_HFSC;
1667 $$.data.hfsc_opts = $3;
1668 }
1669 | FAIRQ {
1670 $$.qtype = ALTQT_FAIRQ;
1671 bzero(&$$.data.fairq_opts,
1672 sizeof(struct node_fairq_opts));
1673 }
1674 | FAIRQ '(' fairq_opts ')' {
1675 $$.qtype = ALTQT_FAIRQ;
1676 $$.data.fairq_opts = $3;
1677 }
|
| 1678 | CODEL {
1679 $$.qtype = ALTQT_CODEL;
1680 bzero(&$$.data.codel_opts,
1681 sizeof(struct codel_opts));
1682 }
1683 | CODEL '(' codel_opts ')' {
1684 $$.qtype = ALTQT_CODEL;
1685 $$.data.codel_opts = $3;
1686 }
|
1675 ;
1676
1677cbqflags_list : cbqflags_item { $$ |= $1; }
1678 | cbqflags_list comma cbqflags_item { $$ |= $3; }
1679 ;
1680
1681cbqflags_item : STRING {
1682 if (!strcmp($1, "default"))
1683 $$ = CBQCLF_DEFCLASS;
1684 else if (!strcmp($1, "borrow"))
1685 $$ = CBQCLF_BORROW;
1686 else if (!strcmp($1, "red"))
1687 $$ = CBQCLF_RED;
1688 else if (!strcmp($1, "ecn"))
1689 $$ = CBQCLF_RED|CBQCLF_ECN;
1690 else if (!strcmp($1, "rio"))
1691 $$ = CBQCLF_RIO;
| 1687 ;
1688
1689cbqflags_list : cbqflags_item { $$ |= $1; }
1690 | cbqflags_list comma cbqflags_item { $$ |= $3; }
1691 ;
1692
1693cbqflags_item : STRING {
1694 if (!strcmp($1, "default"))
1695 $$ = CBQCLF_DEFCLASS;
1696 else if (!strcmp($1, "borrow"))
1697 $$ = CBQCLF_BORROW;
1698 else if (!strcmp($1, "red"))
1699 $$ = CBQCLF_RED;
1700 else if (!strcmp($1, "ecn"))
1701 $$ = CBQCLF_RED|CBQCLF_ECN;
1702 else if (!strcmp($1, "rio"))
1703 $$ = CBQCLF_RIO;
|
| 1704 else if (!strcmp($1, "codel"))
1705 $$ = CBQCLF_CODEL;
|
1692 else {
1693 yyerror("unknown cbq flag \"%s\"", $1);
1694 free($1);
1695 YYERROR;
1696 }
1697 free($1);
1698 }
1699 ;
1700
1701priqflags_list : priqflags_item { $$ |= $1; }
1702 | priqflags_list comma priqflags_item { $$ |= $3; }
1703 ;
1704
1705priqflags_item : STRING {
1706 if (!strcmp($1, "default"))
1707 $$ = PRCF_DEFAULTCLASS;
1708 else if (!strcmp($1, "red"))
1709 $$ = PRCF_RED;
1710 else if (!strcmp($1, "ecn"))
1711 $$ = PRCF_RED|PRCF_ECN;
1712 else if (!strcmp($1, "rio"))
1713 $$ = PRCF_RIO;
| 1706 else {
1707 yyerror("unknown cbq flag \"%s\"", $1);
1708 free($1);
1709 YYERROR;
1710 }
1711 free($1);
1712 }
1713 ;
1714
1715priqflags_list : priqflags_item { $$ |= $1; }
1716 | priqflags_list comma priqflags_item { $$ |= $3; }
1717 ;
1718
1719priqflags_item : STRING {
1720 if (!strcmp($1, "default"))
1721 $$ = PRCF_DEFAULTCLASS;
1722 else if (!strcmp($1, "red"))
1723 $$ = PRCF_RED;
1724 else if (!strcmp($1, "ecn"))
1725 $$ = PRCF_RED|PRCF_ECN;
1726 else if (!strcmp($1, "rio"))
1727 $$ = PRCF_RIO;
|
| 1728 else if (!strcmp($1, "codel"))
1729 $$ = PRCF_CODEL;
|
1714 else {
1715 yyerror("unknown priq flag \"%s\"", $1);
1716 free($1);
1717 YYERROR;
1718 }
1719 free($1);
1720 }
1721 ;
1722
1723hfsc_opts : {
1724 bzero(&hfsc_opts,
1725 sizeof(struct node_hfsc_opts));
1726 }
1727 hfscopts_list {
1728 $$ = hfsc_opts;
1729 }
1730 ;
1731
1732hfscopts_list : hfscopts_item
1733 | hfscopts_list comma hfscopts_item
1734 ;
1735
1736hfscopts_item : LINKSHARE bandwidth {
1737 if (hfsc_opts.linkshare.used) {
1738 yyerror("linkshare already specified");
1739 YYERROR;
1740 }
1741 hfsc_opts.linkshare.m2 = $2;
1742 hfsc_opts.linkshare.used = 1;
1743 }
1744 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
1745 {
1746 if ($5 < 0 || $5 > INT_MAX) {
1747 yyerror("timing in curve out of range");
1748 YYERROR;
1749 }
1750 if (hfsc_opts.linkshare.used) {
1751 yyerror("linkshare already specified");
1752 YYERROR;
1753 }
1754 hfsc_opts.linkshare.m1 = $3;
1755 hfsc_opts.linkshare.d = $5;
1756 hfsc_opts.linkshare.m2 = $7;
1757 hfsc_opts.linkshare.used = 1;
1758 }
1759 | REALTIME bandwidth {
1760 if (hfsc_opts.realtime.used) {
1761 yyerror("realtime already specified");
1762 YYERROR;
1763 }
1764 hfsc_opts.realtime.m2 = $2;
1765 hfsc_opts.realtime.used = 1;
1766 }
1767 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
1768 {
1769 if ($5 < 0 || $5 > INT_MAX) {
1770 yyerror("timing in curve out of range");
1771 YYERROR;
1772 }
1773 if (hfsc_opts.realtime.used) {
1774 yyerror("realtime already specified");
1775 YYERROR;
1776 }
1777 hfsc_opts.realtime.m1 = $3;
1778 hfsc_opts.realtime.d = $5;
1779 hfsc_opts.realtime.m2 = $7;
1780 hfsc_opts.realtime.used = 1;
1781 }
1782 | UPPERLIMIT bandwidth {
1783 if (hfsc_opts.upperlimit.used) {
1784 yyerror("upperlimit already specified");
1785 YYERROR;
1786 }
1787 hfsc_opts.upperlimit.m2 = $2;
1788 hfsc_opts.upperlimit.used = 1;
1789 }
1790 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
1791 {
1792 if ($5 < 0 || $5 > INT_MAX) {
1793 yyerror("timing in curve out of range");
1794 YYERROR;
1795 }
1796 if (hfsc_opts.upperlimit.used) {
1797 yyerror("upperlimit already specified");
1798 YYERROR;
1799 }
1800 hfsc_opts.upperlimit.m1 = $3;
1801 hfsc_opts.upperlimit.d = $5;
1802 hfsc_opts.upperlimit.m2 = $7;
1803 hfsc_opts.upperlimit.used = 1;
1804 }
1805 | STRING {
1806 if (!strcmp($1, "default"))
1807 hfsc_opts.flags |= HFCF_DEFAULTCLASS;
1808 else if (!strcmp($1, "red"))
1809 hfsc_opts.flags |= HFCF_RED;
1810 else if (!strcmp($1, "ecn"))
1811 hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
1812 else if (!strcmp($1, "rio"))
1813 hfsc_opts.flags |= HFCF_RIO;
| 1730 else {
1731 yyerror("unknown priq flag \"%s\"", $1);
1732 free($1);
1733 YYERROR;
1734 }
1735 free($1);
1736 }
1737 ;
1738
1739hfsc_opts : {
1740 bzero(&hfsc_opts,
1741 sizeof(struct node_hfsc_opts));
1742 }
1743 hfscopts_list {
1744 $$ = hfsc_opts;
1745 }
1746 ;
1747
1748hfscopts_list : hfscopts_item
1749 | hfscopts_list comma hfscopts_item
1750 ;
1751
1752hfscopts_item : LINKSHARE bandwidth {
1753 if (hfsc_opts.linkshare.used) {
1754 yyerror("linkshare already specified");
1755 YYERROR;
1756 }
1757 hfsc_opts.linkshare.m2 = $2;
1758 hfsc_opts.linkshare.used = 1;
1759 }
1760 | LINKSHARE '(' bandwidth comma NUMBER comma bandwidth ')'
1761 {
1762 if ($5 < 0 || $5 > INT_MAX) {
1763 yyerror("timing in curve out of range");
1764 YYERROR;
1765 }
1766 if (hfsc_opts.linkshare.used) {
1767 yyerror("linkshare already specified");
1768 YYERROR;
1769 }
1770 hfsc_opts.linkshare.m1 = $3;
1771 hfsc_opts.linkshare.d = $5;
1772 hfsc_opts.linkshare.m2 = $7;
1773 hfsc_opts.linkshare.used = 1;
1774 }
1775 | REALTIME bandwidth {
1776 if (hfsc_opts.realtime.used) {
1777 yyerror("realtime already specified");
1778 YYERROR;
1779 }
1780 hfsc_opts.realtime.m2 = $2;
1781 hfsc_opts.realtime.used = 1;
1782 }
1783 | REALTIME '(' bandwidth comma NUMBER comma bandwidth ')'
1784 {
1785 if ($5 < 0 || $5 > INT_MAX) {
1786 yyerror("timing in curve out of range");
1787 YYERROR;
1788 }
1789 if (hfsc_opts.realtime.used) {
1790 yyerror("realtime already specified");
1791 YYERROR;
1792 }
1793 hfsc_opts.realtime.m1 = $3;
1794 hfsc_opts.realtime.d = $5;
1795 hfsc_opts.realtime.m2 = $7;
1796 hfsc_opts.realtime.used = 1;
1797 }
1798 | UPPERLIMIT bandwidth {
1799 if (hfsc_opts.upperlimit.used) {
1800 yyerror("upperlimit already specified");
1801 YYERROR;
1802 }
1803 hfsc_opts.upperlimit.m2 = $2;
1804 hfsc_opts.upperlimit.used = 1;
1805 }
1806 | UPPERLIMIT '(' bandwidth comma NUMBER comma bandwidth ')'
1807 {
1808 if ($5 < 0 || $5 > INT_MAX) {
1809 yyerror("timing in curve out of range");
1810 YYERROR;
1811 }
1812 if (hfsc_opts.upperlimit.used) {
1813 yyerror("upperlimit already specified");
1814 YYERROR;
1815 }
1816 hfsc_opts.upperlimit.m1 = $3;
1817 hfsc_opts.upperlimit.d = $5;
1818 hfsc_opts.upperlimit.m2 = $7;
1819 hfsc_opts.upperlimit.used = 1;
1820 }
1821 | STRING {
1822 if (!strcmp($1, "default"))
1823 hfsc_opts.flags |= HFCF_DEFAULTCLASS;
1824 else if (!strcmp($1, "red"))
1825 hfsc_opts.flags |= HFCF_RED;
1826 else if (!strcmp($1, "ecn"))
1827 hfsc_opts.flags |= HFCF_RED|HFCF_ECN;
1828 else if (!strcmp($1, "rio"))
1829 hfsc_opts.flags |= HFCF_RIO;
|
| 1830 else if (!strcmp($1, "codel"))
1831 hfsc_opts.flags |= HFCF_CODEL;
|
1814 else {
1815 yyerror("unknown hfsc flag \"%s\"", $1);
1816 free($1);
1817 YYERROR;
1818 }
1819 free($1);
1820 }
1821 ;
1822
1823fairq_opts : {
1824 bzero(&fairq_opts,
1825 sizeof(struct node_fairq_opts));
1826 }
1827 fairqopts_list {
1828 $$ = fairq_opts;
1829 }
1830 ;
1831
1832fairqopts_list : fairqopts_item
1833 | fairqopts_list comma fairqopts_item
1834 ;
1835
1836fairqopts_item : LINKSHARE bandwidth {
1837 if (fairq_opts.linkshare.used) {
1838 yyerror("linkshare already specified");
1839 YYERROR;
1840 }
1841 fairq_opts.linkshare.m2 = $2;
1842 fairq_opts.linkshare.used = 1;
1843 }
1844 | LINKSHARE '(' bandwidth number bandwidth ')' {
1845 if (fairq_opts.linkshare.used) {
1846 yyerror("linkshare already specified");
1847 YYERROR;
1848 }
1849 fairq_opts.linkshare.m1 = $3;
1850 fairq_opts.linkshare.d = $4;
1851 fairq_opts.linkshare.m2 = $5;
1852 fairq_opts.linkshare.used = 1;
1853 }
1854 | HOGS bandwidth {
1855 fairq_opts.hogs_bw = $2;
1856 }
1857 | BUCKETS number {
1858 fairq_opts.nbuckets = $2;
1859 }
1860 | STRING {
1861 if (!strcmp($1, "default"))
1862 fairq_opts.flags |= FARF_DEFAULTCLASS;
1863 else if (!strcmp($1, "red"))
1864 fairq_opts.flags |= FARF_RED;
1865 else if (!strcmp($1, "ecn"))
1866 fairq_opts.flags |= FARF_RED|FARF_ECN;
1867 else if (!strcmp($1, "rio"))
1868 fairq_opts.flags |= FARF_RIO;
| 1832 else {
1833 yyerror("unknown hfsc flag \"%s\"", $1);
1834 free($1);
1835 YYERROR;
1836 }
1837 free($1);
1838 }
1839 ;
1840
1841fairq_opts : {
1842 bzero(&fairq_opts,
1843 sizeof(struct node_fairq_opts));
1844 }
1845 fairqopts_list {
1846 $$ = fairq_opts;
1847 }
1848 ;
1849
1850fairqopts_list : fairqopts_item
1851 | fairqopts_list comma fairqopts_item
1852 ;
1853
1854fairqopts_item : LINKSHARE bandwidth {
1855 if (fairq_opts.linkshare.used) {
1856 yyerror("linkshare already specified");
1857 YYERROR;
1858 }
1859 fairq_opts.linkshare.m2 = $2;
1860 fairq_opts.linkshare.used = 1;
1861 }
1862 | LINKSHARE '(' bandwidth number bandwidth ')' {
1863 if (fairq_opts.linkshare.used) {
1864 yyerror("linkshare already specified");
1865 YYERROR;
1866 }
1867 fairq_opts.linkshare.m1 = $3;
1868 fairq_opts.linkshare.d = $4;
1869 fairq_opts.linkshare.m2 = $5;
1870 fairq_opts.linkshare.used = 1;
1871 }
1872 | HOGS bandwidth {
1873 fairq_opts.hogs_bw = $2;
1874 }
1875 | BUCKETS number {
1876 fairq_opts.nbuckets = $2;
1877 }
1878 | STRING {
1879 if (!strcmp($1, "default"))
1880 fairq_opts.flags |= FARF_DEFAULTCLASS;
1881 else if (!strcmp($1, "red"))
1882 fairq_opts.flags |= FARF_RED;
1883 else if (!strcmp($1, "ecn"))
1884 fairq_opts.flags |= FARF_RED|FARF_ECN;
1885 else if (!strcmp($1, "rio"))
1886 fairq_opts.flags |= FARF_RIO;
|
| 1887 else if (!strcmp($1, "codel"))
1888 fairq_opts.flags |= FARF_CODEL;
|
1869 else {
1870 yyerror("unknown fairq flag \"%s\"", $1);
1871 free($1);
1872 YYERROR;
1873 }
1874 free($1);
1875 }
1876 ;
1877
| 1889 else {
1890 yyerror("unknown fairq flag \"%s\"", $1);
1891 free($1);
1892 YYERROR;
1893 }
1894 free($1);
1895 }
1896 ;
1897
|
| 1898codel_opts : {
1899 bzero(&codel_opts,
1900 sizeof(struct codel_opts));
1901 }
1902 codelopts_list {
1903 $$ = codel_opts;
1904 }
1905 ;
1906
1907codelopts_list : codelopts_item
1908 | codelopts_list comma codelopts_item
1909 ;
1910
1911codelopts_item : INTERVAL number {
1912 if (codel_opts.interval) {
1913 yyerror("interval already specified");
1914 YYERROR;
1915 }
1916 codel_opts.interval = $2;
1917 }
1918 | TARGET number {
1919 if (codel_opts.target) {
1920 yyerror("target already specified");
1921 YYERROR;
1922 }
1923 codel_opts.target = $2;
1924 }
1925 | STRING {
1926 if (!strcmp($1, "ecn"))
1927 codel_opts.ecn = 1;
1928 else {
1929 yyerror("unknown codel option \"%s\"", $1);
1930 free($1);
1931 YYERROR;
1932 }
1933 free($1);
1934 }
1935 ;
1936
|
1878qassign : /* empty */ { $$ = NULL; }
1879 | qassign_item { $$ = $1; }
1880 | '{' optnl qassign_list '}' { $$ = $3; }
1881 ;
1882
1883qassign_list : qassign_item optnl { $$ = $1; }
1884 | qassign_list comma qassign_item optnl {
1885 $1->tail->next = $3;
1886 $1->tail = $3;
1887 $$ = $1;
1888 }
1889 ;
1890
1891qassign_item : STRING {
1892 $$ = calloc(1, sizeof(struct node_queue));
1893 if ($$ == NULL)
1894 err(1, "qassign_item: calloc");
1895 if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
1896 sizeof($$->queue)) {
1897 yyerror("queue name '%s' too long (max "
1898 "%d chars)", $1, sizeof($$->queue)-1);
1899 free($1);
1900 free($$);
1901 YYERROR;
1902 }
1903 free($1);
1904 $$->next = NULL;
1905 $$->tail = $$;
1906 }
1907 ;
1908
1909pfrule : action dir logquick interface route af proto fromto
1910 filter_opts
1911 {
1912 struct pf_rule r;
1913 struct node_state_opt *o;
1914 struct node_proto *proto;
1915 int srctrack = 0;
1916 int statelock = 0;
1917 int adaptive = 0;
1918 int defaults = 0;
1919
1920 if (check_rulestate(PFCTL_STATE_FILTER))
1921 YYERROR;
1922
1923 memset(&r, 0, sizeof(r));
1924
1925 r.action = $1.b1;
1926 switch ($1.b2) {
1927 case PFRULE_RETURNRST:
1928 r.rule_flag |= PFRULE_RETURNRST;
1929 r.return_ttl = $1.w;
1930 break;
1931 case PFRULE_RETURNICMP:
1932 r.rule_flag |= PFRULE_RETURNICMP;
1933 r.return_icmp = $1.w;
1934 r.return_icmp6 = $1.w2;
1935 break;
1936 case PFRULE_RETURN:
1937 r.rule_flag |= PFRULE_RETURN;
1938 r.return_icmp = $1.w;
1939 r.return_icmp6 = $1.w2;
1940 break;
1941 }
1942 r.direction = $2;
1943 r.log = $3.log;
1944 r.logif = $3.logif;
1945 r.quick = $3.quick;
1946 r.prob = $9.prob;
1947 r.rtableid = $9.rtableid;
1948
1949 r.af = $6;
1950 if ($9.tag)
1951 if (strlcpy(r.tagname, $9.tag,
1952 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1953 yyerror("tag too long, max %u chars",
1954 PF_TAG_NAME_SIZE - 1);
1955 YYERROR;
1956 }
1957 if ($9.match_tag)
1958 if (strlcpy(r.match_tagname, $9.match_tag,
1959 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
1960 yyerror("tag too long, max %u chars",
1961 PF_TAG_NAME_SIZE - 1);
1962 YYERROR;
1963 }
1964 r.match_tag_not = $9.match_tag_not;
1965 if (rule_label(&r, $9.label))
1966 YYERROR;
1967 free($9.label);
1968 r.flags = $9.flags.b1;
1969 r.flagset = $9.flags.b2;
1970 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
1971 yyerror("flags always false");
1972 YYERROR;
1973 }
1974 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
1975 for (proto = $7; proto != NULL &&
1976 proto->proto != IPPROTO_TCP;
1977 proto = proto->next)
1978 ; /* nothing */
1979 if (proto == NULL && $7 != NULL) {
1980 if ($9.flags.b1 || $9.flags.b2)
1981 yyerror(
1982 "flags only apply to tcp");
1983 if ($8.src_os)
1984 yyerror(
1985 "OS fingerprinting only "
1986 "apply to tcp");
1987 YYERROR;
1988 }
1989#if 0
1990 if (($9.flags.b1 & parse_flags("S")) == 0 &&
1991 $8.src_os) {
1992 yyerror("OS fingerprinting requires "
1993 "the SYN TCP flag (flags S/SA)");
1994 YYERROR;
1995 }
1996#endif
1997 }
1998
1999 r.tos = $9.tos;
2000 r.keep_state = $9.keep.action;
2001 o = $9.keep.options;
2002
2003 /* 'keep state' by default on pass rules. */
2004 if (!r.keep_state && !r.action &&
2005 !($9.marker & FOM_KEEP)) {
2006 r.keep_state = PF_STATE_NORMAL;
2007 o = keep_state_defaults;
2008 defaults = 1;
2009 }
2010
2011 while (o) {
2012 struct node_state_opt *p = o;
2013
2014 switch (o->type) {
2015 case PF_STATE_OPT_MAX:
2016 if (r.max_states) {
2017 yyerror("state option 'max' "
2018 "multiple definitions");
2019 YYERROR;
2020 }
2021 r.max_states = o->data.max_states;
2022 break;
2023 case PF_STATE_OPT_NOSYNC:
2024 if (r.rule_flag & PFRULE_NOSYNC) {
2025 yyerror("state option 'sync' "
2026 "multiple definitions");
2027 YYERROR;
2028 }
2029 r.rule_flag |= PFRULE_NOSYNC;
2030 break;
2031 case PF_STATE_OPT_SRCTRACK:
2032 if (srctrack) {
2033 yyerror("state option "
2034 "'source-track' "
2035 "multiple definitions");
2036 YYERROR;
2037 }
2038 srctrack = o->data.src_track;
2039 r.rule_flag |= PFRULE_SRCTRACK;
2040 break;
2041 case PF_STATE_OPT_MAX_SRC_STATES:
2042 if (r.max_src_states) {
2043 yyerror("state option "
2044 "'max-src-states' "
2045 "multiple definitions");
2046 YYERROR;
2047 }
2048 if (o->data.max_src_states == 0) {
2049 yyerror("'max-src-states' must "
2050 "be > 0");
2051 YYERROR;
2052 }
2053 r.max_src_states =
2054 o->data.max_src_states;
2055 r.rule_flag |= PFRULE_SRCTRACK;
2056 break;
2057 case PF_STATE_OPT_OVERLOAD:
2058 if (r.overload_tblname[0]) {
2059 yyerror("multiple 'overload' "
2060 "table definitions");
2061 YYERROR;
2062 }
2063 if (strlcpy(r.overload_tblname,
2064 o->data.overload.tblname,
2065 PF_TABLE_NAME_SIZE) >=
2066 PF_TABLE_NAME_SIZE) {
2067 yyerror("state option: "
2068 "strlcpy");
2069 YYERROR;
2070 }
2071 r.flush = o->data.overload.flush;
2072 break;
2073 case PF_STATE_OPT_MAX_SRC_CONN:
2074 if (r.max_src_conn) {
2075 yyerror("state option "
2076 "'max-src-conn' "
2077 "multiple definitions");
2078 YYERROR;
2079 }
2080 if (o->data.max_src_conn == 0) {
2081 yyerror("'max-src-conn' "
2082 "must be > 0");
2083 YYERROR;
2084 }
2085 r.max_src_conn =
2086 o->data.max_src_conn;
2087 r.rule_flag |= PFRULE_SRCTRACK |
2088 PFRULE_RULESRCTRACK;
2089 break;
2090 case PF_STATE_OPT_MAX_SRC_CONN_RATE:
2091 if (r.max_src_conn_rate.limit) {
2092 yyerror("state option "
2093 "'max-src-conn-rate' "
2094 "multiple definitions");
2095 YYERROR;
2096 }
2097 if (!o->data.max_src_conn_rate.limit ||
2098 !o->data.max_src_conn_rate.seconds) {
2099 yyerror("'max-src-conn-rate' "
2100 "values must be > 0");
2101 YYERROR;
2102 }
2103 if (o->data.max_src_conn_rate.limit >
2104 PF_THRESHOLD_MAX) {
2105 yyerror("'max-src-conn-rate' "
2106 "maximum rate must be < %u",
2107 PF_THRESHOLD_MAX);
2108 YYERROR;
2109 }
2110 r.max_src_conn_rate.limit =
2111 o->data.max_src_conn_rate.limit;
2112 r.max_src_conn_rate.seconds =
2113 o->data.max_src_conn_rate.seconds;
2114 r.rule_flag |= PFRULE_SRCTRACK |
2115 PFRULE_RULESRCTRACK;
2116 break;
2117 case PF_STATE_OPT_MAX_SRC_NODES:
2118 if (r.max_src_nodes) {
2119 yyerror("state option "
2120 "'max-src-nodes' "
2121 "multiple definitions");
2122 YYERROR;
2123 }
2124 if (o->data.max_src_nodes == 0) {
2125 yyerror("'max-src-nodes' must "
2126 "be > 0");
2127 YYERROR;
2128 }
2129 r.max_src_nodes =
2130 o->data.max_src_nodes;
2131 r.rule_flag |= PFRULE_SRCTRACK |
2132 PFRULE_RULESRCTRACK;
2133 break;
2134 case PF_STATE_OPT_STATELOCK:
2135 if (statelock) {
2136 yyerror("state locking option: "
2137 "multiple definitions");
2138 YYERROR;
2139 }
2140 statelock = 1;
2141 r.rule_flag |= o->data.statelock;
2142 break;
2143 case PF_STATE_OPT_SLOPPY:
2144 if (r.rule_flag & PFRULE_STATESLOPPY) {
2145 yyerror("state sloppy option: "
2146 "multiple definitions");
2147 YYERROR;
2148 }
2149 r.rule_flag |= PFRULE_STATESLOPPY;
2150 break;
2151 case PF_STATE_OPT_TIMEOUT:
2152 if (o->data.timeout.number ==
2153 PFTM_ADAPTIVE_START ||
2154 o->data.timeout.number ==
2155 PFTM_ADAPTIVE_END)
2156 adaptive = 1;
2157 if (r.timeout[o->data.timeout.number]) {
2158 yyerror("state timeout %s "
2159 "multiple definitions",
2160 pf_timeouts[o->data.
2161 timeout.number].name);
2162 YYERROR;
2163 }
2164 r.timeout[o->data.timeout.number] =
2165 o->data.timeout.seconds;
2166 }
2167 o = o->next;
2168 if (!defaults)
2169 free(p);
2170 }
2171
2172 /* 'flags S/SA' by default on stateful rules */
2173 if (!r.action && !r.flags && !r.flagset &&
2174 !$9.fragment && !($9.marker & FOM_FLAGS) &&
2175 r.keep_state) {
2176 r.flags = parse_flags("S");
2177 r.flagset = parse_flags("SA");
2178 }
2179 if (!adaptive && r.max_states) {
2180 r.timeout[PFTM_ADAPTIVE_START] =
2181 (r.max_states / 10) * 6;
2182 r.timeout[PFTM_ADAPTIVE_END] =
2183 (r.max_states / 10) * 12;
2184 }
2185 if (r.rule_flag & PFRULE_SRCTRACK) {
2186 if (srctrack == PF_SRCTRACK_GLOBAL &&
2187 r.max_src_nodes) {
2188 yyerror("'max-src-nodes' is "
2189 "incompatible with "
2190 "'source-track global'");
2191 YYERROR;
2192 }
2193 if (srctrack == PF_SRCTRACK_GLOBAL &&
2194 r.max_src_conn) {
2195 yyerror("'max-src-conn' is "
2196 "incompatible with "
2197 "'source-track global'");
2198 YYERROR;
2199 }
2200 if (srctrack == PF_SRCTRACK_GLOBAL &&
2201 r.max_src_conn_rate.seconds) {
2202 yyerror("'max-src-conn-rate' is "
2203 "incompatible with "
2204 "'source-track global'");
2205 YYERROR;
2206 }
2207 if (r.timeout[PFTM_SRC_NODE] <
2208 r.max_src_conn_rate.seconds)
2209 r.timeout[PFTM_SRC_NODE] =
2210 r.max_src_conn_rate.seconds;
2211 r.rule_flag |= PFRULE_SRCTRACK;
2212 if (srctrack == PF_SRCTRACK_RULE)
2213 r.rule_flag |= PFRULE_RULESRCTRACK;
2214 }
2215 if (r.keep_state && !statelock)
2216 r.rule_flag |= default_statelock;
2217
2218 if ($9.fragment)
2219 r.rule_flag |= PFRULE_FRAGMENT;
2220 r.allow_opts = $9.allowopts;
2221
2222 decide_address_family($8.src.host, &r.af);
2223 decide_address_family($8.dst.host, &r.af);
2224
2225 if ($5.rt) {
2226 if (!r.direction) {
2227 yyerror("direction must be explicit "
2228 "with rules that specify routing");
2229 YYERROR;
2230 }
2231 r.rt = $5.rt;
2232 r.rpool.opts = $5.pool_opts;
2233 if ($5.key != NULL)
2234 memcpy(&r.rpool.key, $5.key,
2235 sizeof(struct pf_poolhashkey));
2236 }
2237 if (r.rt && r.rt != PF_FASTROUTE) {
2238 decide_address_family($5.host, &r.af);
2239 remove_invalid_hosts(&$5.host, &r.af);
2240 if ($5.host == NULL) {
2241 yyerror("no routing address with "
2242 "matching address family found.");
2243 YYERROR;
2244 }
2245 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
2246 PF_POOL_NONE && ($5.host->next != NULL ||
2247 $5.host->addr.type == PF_ADDR_TABLE ||
2248 DYNIF_MULTIADDR($5.host->addr)))
2249 r.rpool.opts |= PF_POOL_ROUNDROBIN;
2250 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2251 PF_POOL_ROUNDROBIN &&
2252 disallow_table($5.host, "tables are only "
2253 "supported in round-robin routing pools"))
2254 YYERROR;
2255 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2256 PF_POOL_ROUNDROBIN &&
2257 disallow_alias($5.host, "interface (%s) "
2258 "is only supported in round-robin "
2259 "routing pools"))
2260 YYERROR;
2261 if ($5.host->next != NULL) {
2262 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2263 PF_POOL_ROUNDROBIN) {
2264 yyerror("r.rpool.opts must "
2265 "be PF_POOL_ROUNDROBIN");
2266 YYERROR;
2267 }
2268 }
2269 }
2270 if ($9.queues.qname != NULL) {
2271 if (strlcpy(r.qname, $9.queues.qname,
2272 sizeof(r.qname)) >= sizeof(r.qname)) {
2273 yyerror("rule qname too long (max "
2274 "%d chars)", sizeof(r.qname)-1);
2275 YYERROR;
2276 }
2277 free($9.queues.qname);
2278 }
2279 if ($9.queues.pqname != NULL) {
2280 if (strlcpy(r.pqname, $9.queues.pqname,
2281 sizeof(r.pqname)) >= sizeof(r.pqname)) {
2282 yyerror("rule pqname too long (max "
2283 "%d chars)", sizeof(r.pqname)-1);
2284 YYERROR;
2285 }
2286 free($9.queues.pqname);
2287 }
2288#ifdef __FreeBSD__
2289 r.divert.port = $9.divert.port;
2290#else
2291 if ((r.divert.port = $9.divert.port)) {
2292 if (r.direction == PF_OUT) {
2293 if ($9.divert.addr) {
2294 yyerror("address specified "
2295 "for outgoing divert");
2296 YYERROR;
2297 }
2298 bzero(&r.divert.addr,
2299 sizeof(r.divert.addr));
2300 } else {
2301 if (!$9.divert.addr) {
2302 yyerror("no address specified "
2303 "for incoming divert");
2304 YYERROR;
2305 }
2306 if ($9.divert.addr->af != r.af) {
2307 yyerror("address family "
2308 "mismatch for divert");
2309 YYERROR;
2310 }
2311 r.divert.addr =
2312 $9.divert.addr->addr.v.a.addr;
2313 }
2314 }
2315#endif
2316
2317 expand_rule(&r, $4, $5.host, $7, $8.src_os,
2318 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
2319 $9.uid, $9.gid, $9.icmpspec, "");
2320 }
2321 ;
2322
2323filter_opts : {
2324 bzero(&filter_opts, sizeof filter_opts);
2325 filter_opts.rtableid = -1;
2326 }
2327 filter_opts_l
2328 { $$ = filter_opts; }
2329 | /* empty */ {
2330 bzero(&filter_opts, sizeof filter_opts);
2331 filter_opts.rtableid = -1;
2332 $$ = filter_opts;
2333 }
2334 ;
2335
2336filter_opts_l : filter_opts_l filter_opt
2337 | filter_opt
2338 ;
2339
2340filter_opt : USER uids {
2341 if (filter_opts.uid)
2342 $2->tail->next = filter_opts.uid;
2343 filter_opts.uid = $2;
2344 }
2345 | GROUP gids {
2346 if (filter_opts.gid)
2347 $2->tail->next = filter_opts.gid;
2348 filter_opts.gid = $2;
2349 }
2350 | flags {
2351 if (filter_opts.marker & FOM_FLAGS) {
2352 yyerror("flags cannot be redefined");
2353 YYERROR;
2354 }
2355 filter_opts.marker |= FOM_FLAGS;
2356 filter_opts.flags.b1 |= $1.b1;
2357 filter_opts.flags.b2 |= $1.b2;
2358 filter_opts.flags.w |= $1.w;
2359 filter_opts.flags.w2 |= $1.w2;
2360 }
2361 | icmpspec {
2362 if (filter_opts.marker & FOM_ICMP) {
2363 yyerror("icmp-type cannot be redefined");
2364 YYERROR;
2365 }
2366 filter_opts.marker |= FOM_ICMP;
2367 filter_opts.icmpspec = $1;
2368 }
2369 | TOS tos {
2370 if (filter_opts.marker & FOM_TOS) {
2371 yyerror("tos cannot be redefined");
2372 YYERROR;
2373 }
2374 filter_opts.marker |= FOM_TOS;
2375 filter_opts.tos = $2;
2376 }
2377 | keep {
2378 if (filter_opts.marker & FOM_KEEP) {
2379 yyerror("modulate or keep cannot be redefined");
2380 YYERROR;
2381 }
2382 filter_opts.marker |= FOM_KEEP;
2383 filter_opts.keep.action = $1.action;
2384 filter_opts.keep.options = $1.options;
2385 }
2386 | FRAGMENT {
2387 filter_opts.fragment = 1;
2388 }
2389 | ALLOWOPTS {
2390 filter_opts.allowopts = 1;
2391 }
2392 | label {
2393 if (filter_opts.label) {
2394 yyerror("label cannot be redefined");
2395 YYERROR;
2396 }
2397 filter_opts.label = $1;
2398 }
2399 | qname {
2400 if (filter_opts.queues.qname) {
2401 yyerror("queue cannot be redefined");
2402 YYERROR;
2403 }
2404 filter_opts.queues = $1;
2405 }
2406 | TAG string {
2407 filter_opts.tag = $2;
2408 }
2409 | not TAGGED string {
2410 filter_opts.match_tag = $3;
2411 filter_opts.match_tag_not = $1;
2412 }
2413 | PROBABILITY probability {
2414 double p;
2415
2416 p = floor($2 * UINT_MAX + 0.5);
2417 if (p < 0.0 || p > UINT_MAX) {
2418 yyerror("invalid probability: %lf", p);
2419 YYERROR;
2420 }
2421 filter_opts.prob = (u_int32_t)p;
2422 if (filter_opts.prob == 0)
2423 filter_opts.prob = 1;
2424 }
2425 | RTABLE NUMBER {
2426 if ($2 < 0 || $2 > rt_tableid_max()) {
2427 yyerror("invalid rtable id");
2428 YYERROR;
2429 }
2430 filter_opts.rtableid = $2;
2431 }
2432 | DIVERTTO portplain {
2433#ifdef __FreeBSD__
2434 filter_opts.divert.port = $2.a;
2435 if (!filter_opts.divert.port) {
2436 yyerror("invalid divert port: %u", ntohs($2.a));
2437 YYERROR;
2438 }
2439#endif
2440 }
2441 | DIVERTTO STRING PORT portplain {
2442#ifndef __FreeBSD__
2443 if ((filter_opts.divert.addr = host($2)) == NULL) {
2444 yyerror("could not parse divert address: %s",
2445 $2);
2446 free($2);
2447 YYERROR;
2448 }
2449#else
2450 if ($2)
2451#endif
2452 free($2);
2453 filter_opts.divert.port = $4.a;
2454 if (!filter_opts.divert.port) {
2455 yyerror("invalid divert port: %u", ntohs($4.a));
2456 YYERROR;
2457 }
2458 }
2459 | DIVERTREPLY {
2460#ifdef __FreeBSD__
2461 yyerror("divert-reply has no meaning in FreeBSD pf(4)");
2462 YYERROR;
2463#else
2464 filter_opts.divert.port = 1; /* some random value */
2465#endif
2466 }
2467 ;
2468
2469probability : STRING {
2470 char *e;
2471 double p = strtod($1, &e);
2472
2473 if (*e == '%') {
2474 p *= 0.01;
2475 e++;
2476 }
2477 if (*e) {
2478 yyerror("invalid probability: %s", $1);
2479 free($1);
2480 YYERROR;
2481 }
2482 free($1);
2483 $$ = p;
2484 }
2485 | NUMBER {
2486 $$ = (double)$1;
2487 }
2488 ;
2489
2490
2491action : PASS { $$.b1 = PF_PASS; $$.b2 = $$.w = 0; }
2492 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; }
2493 ;
2494
2495blockspec : /* empty */ {
2496 $$.b2 = blockpolicy;
2497 $$.w = returnicmpdefault;
2498 $$.w2 = returnicmp6default;
2499 }
2500 | DROP {
2501 $$.b2 = PFRULE_DROP;
2502 $$.w = 0;
2503 $$.w2 = 0;
2504 }
2505 | RETURNRST {
2506 $$.b2 = PFRULE_RETURNRST;
2507 $$.w = 0;
2508 $$.w2 = 0;
2509 }
2510 | RETURNRST '(' TTL NUMBER ')' {
2511 if ($4 < 0 || $4 > 255) {
2512 yyerror("illegal ttl value %d", $4);
2513 YYERROR;
2514 }
2515 $$.b2 = PFRULE_RETURNRST;
2516 $$.w = $4;
2517 $$.w2 = 0;
2518 }
2519 | RETURNICMP {
2520 $$.b2 = PFRULE_RETURNICMP;
2521 $$.w = returnicmpdefault;
2522 $$.w2 = returnicmp6default;
2523 }
2524 | RETURNICMP6 {
2525 $$.b2 = PFRULE_RETURNICMP;
2526 $$.w = returnicmpdefault;
2527 $$.w2 = returnicmp6default;
2528 }
2529 | RETURNICMP '(' reticmpspec ')' {
2530 $$.b2 = PFRULE_RETURNICMP;
2531 $$.w = $3;
2532 $$.w2 = returnicmpdefault;
2533 }
2534 | RETURNICMP6 '(' reticmp6spec ')' {
2535 $$.b2 = PFRULE_RETURNICMP;
2536 $$.w = returnicmpdefault;
2537 $$.w2 = $3;
2538 }
2539 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
2540 $$.b2 = PFRULE_RETURNICMP;
2541 $$.w = $3;
2542 $$.w2 = $5;
2543 }
2544 | RETURN {
2545 $$.b2 = PFRULE_RETURN;
2546 $$.w = returnicmpdefault;
2547 $$.w2 = returnicmp6default;
2548 }
2549 ;
2550
2551reticmpspec : STRING {
2552 if (!($$ = parseicmpspec($1, AF_INET))) {
2553 free($1);
2554 YYERROR;
2555 }
2556 free($1);
2557 }
2558 | NUMBER {
2559 u_int8_t icmptype;
2560
2561 if ($1 < 0 || $1 > 255) {
2562 yyerror("invalid icmp code %lu", $1);
2563 YYERROR;
2564 }
2565 icmptype = returnicmpdefault >> 8;
2566 $$ = (icmptype << 8 | $1);
2567 }
2568 ;
2569
2570reticmp6spec : STRING {
2571 if (!($$ = parseicmpspec($1, AF_INET6))) {
2572 free($1);
2573 YYERROR;
2574 }
2575 free($1);
2576 }
2577 | NUMBER {
2578 u_int8_t icmptype;
2579
2580 if ($1 < 0 || $1 > 255) {
2581 yyerror("invalid icmp code %lu", $1);
2582 YYERROR;
2583 }
2584 icmptype = returnicmp6default >> 8;
2585 $$ = (icmptype << 8 | $1);
2586 }
2587 ;
2588
2589dir : /* empty */ { $$ = PF_INOUT; }
2590 | IN { $$ = PF_IN; }
2591 | OUT { $$ = PF_OUT; }
2592 ;
2593
2594quick : /* empty */ { $$.quick = 0; }
2595 | QUICK { $$.quick = 1; }
2596 ;
2597
2598logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; }
2599 | log { $$ = $1; $$.quick = 0; }
2600 | QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; }
2601 | log QUICK { $$ = $1; $$.quick = 1; }
2602 | QUICK log { $$ = $2; $$.quick = 1; }
2603 ;
2604
2605log : LOG { $$.log = PF_LOG; $$.logif = 0; }
2606 | LOG '(' logopts ')' {
2607 $$.log = PF_LOG | $3.log;
2608 $$.logif = $3.logif;
2609 }
2610 ;
2611
2612logopts : logopt { $$ = $1; }
2613 | logopts comma logopt {
2614 $$.log = $1.log | $3.log;
2615 $$.logif = $3.logif;
2616 if ($$.logif == 0)
2617 $$.logif = $1.logif;
2618 }
2619 ;
2620
2621logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; }
2622 | USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2623 | GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2624 | TO string {
2625 const char *errstr;
2626 u_int i;
2627
2628 $$.log = 0;
2629 if (strncmp($2, "pflog", 5)) {
2630 yyerror("%s: should be a pflog interface", $2);
2631 free($2);
2632 YYERROR;
2633 }
2634 i = strtonum($2 + 5, 0, 255, &errstr);
2635 if (errstr) {
2636 yyerror("%s: %s", $2, errstr);
2637 free($2);
2638 YYERROR;
2639 }
2640 free($2);
2641 $$.logif = i;
2642 }
2643 ;
2644
2645interface : /* empty */ { $$ = NULL; }
2646 | ON if_item_not { $$ = $2; }
2647 | ON '{' optnl if_list '}' { $$ = $4; }
2648 ;
2649
2650if_list : if_item_not optnl { $$ = $1; }
2651 | if_list comma if_item_not optnl {
2652 $1->tail->next = $3;
2653 $1->tail = $3;
2654 $$ = $1;
2655 }
2656 ;
2657
2658if_item_not : not if_item { $$ = $2; $$->not = $1; }
2659 ;
2660
2661if_item : STRING {
2662 struct node_host *n;
2663
2664 $$ = calloc(1, sizeof(struct node_if));
2665 if ($$ == NULL)
2666 err(1, "if_item: calloc");
2667 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2668 sizeof($$->ifname)) {
2669 free($1);
2670 free($$);
2671 yyerror("interface name too long");
2672 YYERROR;
2673 }
2674
2675 if ((n = ifa_exists($1)) != NULL)
2676 $$->ifa_flags = n->ifa_flags;
2677
2678 free($1);
2679 $$->not = 0;
2680 $$->next = NULL;
2681 $$->tail = $$;
2682 }
2683 ;
2684
2685af : /* empty */ { $$ = 0; }
2686 | INET { $$ = AF_INET; }
2687 | INET6 { $$ = AF_INET6; }
2688 ;
2689
2690proto : /* empty */ { $$ = NULL; }
2691 | PROTO proto_item { $$ = $2; }
2692 | PROTO '{' optnl proto_list '}' { $$ = $4; }
2693 ;
2694
2695proto_list : proto_item optnl { $$ = $1; }
2696 | proto_list comma proto_item optnl {
2697 $1->tail->next = $3;
2698 $1->tail = $3;
2699 $$ = $1;
2700 }
2701 ;
2702
2703proto_item : protoval {
2704 u_int8_t pr;
2705
2706 pr = (u_int8_t)$1;
2707 if (pr == 0) {
2708 yyerror("proto 0 cannot be used");
2709 YYERROR;
2710 }
2711 $$ = calloc(1, sizeof(struct node_proto));
2712 if ($$ == NULL)
2713 err(1, "proto_item: calloc");
2714 $$->proto = pr;
2715 $$->next = NULL;
2716 $$->tail = $$;
2717 }
2718 ;
2719
2720protoval : STRING {
2721 struct protoent *p;
2722
2723 p = getprotobyname($1);
2724 if (p == NULL) {
2725 yyerror("unknown protocol %s", $1);
2726 free($1);
2727 YYERROR;
2728 }
2729 $$ = p->p_proto;
2730 free($1);
2731 }
2732 | NUMBER {
2733 if ($1 < 0 || $1 > 255) {
2734 yyerror("protocol outside range");
2735 YYERROR;
2736 }
2737 }
2738 ;
2739
2740fromto : ALL {
2741 $$.src.host = NULL;
2742 $$.src.port = NULL;
2743 $$.dst.host = NULL;
2744 $$.dst.port = NULL;
2745 $$.src_os = NULL;
2746 }
2747 | from os to {
2748 $$.src = $1;
2749 $$.src_os = $2;
2750 $$.dst = $3;
2751 }
2752 ;
2753
2754os : /* empty */ { $$ = NULL; }
2755 | OS xos { $$ = $2; }
2756 | OS '{' optnl os_list '}' { $$ = $4; }
2757 ;
2758
2759xos : STRING {
2760 $$ = calloc(1, sizeof(struct node_os));
2761 if ($$ == NULL)
2762 err(1, "os: calloc");
2763 $$->os = $1;
2764 $$->tail = $$;
2765 }
2766 ;
2767
2768os_list : xos optnl { $$ = $1; }
2769 | os_list comma xos optnl {
2770 $1->tail->next = $3;
2771 $1->tail = $3;
2772 $$ = $1;
2773 }
2774 ;
2775
2776from : /* empty */ {
2777 $$.host = NULL;
2778 $$.port = NULL;
2779 }
2780 | FROM ipportspec {
2781 $$ = $2;
2782 }
2783 ;
2784
2785to : /* empty */ {
2786 $$.host = NULL;
2787 $$.port = NULL;
2788 }
2789 | TO ipportspec {
2790 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
2791 "not permitted in a destination address"))
2792 YYERROR;
2793 $$ = $2;
2794 }
2795 ;
2796
2797ipportspec : ipspec {
2798 $$.host = $1;
2799 $$.port = NULL;
2800 }
2801 | ipspec PORT portspec {
2802 $$.host = $1;
2803 $$.port = $3;
2804 }
2805 | PORT portspec {
2806 $$.host = NULL;
2807 $$.port = $2;
2808 }
2809 ;
2810
2811optnl : '\n' optnl
2812 |
2813 ;
2814
2815ipspec : ANY { $$ = NULL; }
2816 | xhost { $$ = $1; }
2817 | '{' optnl host_list '}' { $$ = $3; }
2818 ;
2819
2820toipspec : TO ipspec { $$ = $2; }
2821 | /* empty */ { $$ = NULL; }
2822 ;
2823
2824host_list : ipspec optnl { $$ = $1; }
2825 | host_list comma ipspec optnl {
2826 if ($3 == NULL)
2827 $$ = $1;
2828 else if ($1 == NULL)
2829 $$ = $3;
2830 else {
2831 $1->tail->next = $3;
2832 $1->tail = $3->tail;
2833 $$ = $1;
2834 }
2835 }
2836 ;
2837
2838xhost : not host {
2839 struct node_host *n;
2840
2841 for (n = $2; n != NULL; n = n->next)
2842 n->not = $1;
2843 $$ = $2;
2844 }
2845 | not NOROUTE {
2846 $$ = calloc(1, sizeof(struct node_host));
2847 if ($$ == NULL)
2848 err(1, "xhost: calloc");
2849 $$->addr.type = PF_ADDR_NOROUTE;
2850 $$->next = NULL;
2851 $$->not = $1;
2852 $$->tail = $$;
2853 }
2854 | not URPFFAILED {
2855 $$ = calloc(1, sizeof(struct node_host));
2856 if ($$ == NULL)
2857 err(1, "xhost: calloc");
2858 $$->addr.type = PF_ADDR_URPFFAILED;
2859 $$->next = NULL;
2860 $$->not = $1;
2861 $$->tail = $$;
2862 }
2863 ;
2864
2865host : STRING {
2866 if (($$ = host($1)) == NULL) {
2867 /* error. "any" is handled elsewhere */
2868 free($1);
2869 yyerror("could not parse host specification");
2870 YYERROR;
2871 }
2872 free($1);
2873
2874 }
2875 | STRING '-' STRING {
2876 struct node_host *b, *e;
2877
2878 if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
2879 free($1);
2880 free($3);
2881 yyerror("could not parse host specification");
2882 YYERROR;
2883 }
2884 if (b->af != e->af ||
2885 b->addr.type != PF_ADDR_ADDRMASK ||
2886 e->addr.type != PF_ADDR_ADDRMASK ||
2887 unmask(&b->addr.v.a.mask, b->af) !=
2888 (b->af == AF_INET ? 32 : 128) ||
2889 unmask(&e->addr.v.a.mask, e->af) !=
2890 (e->af == AF_INET ? 32 : 128) ||
2891 b->next != NULL || b->not ||
2892 e->next != NULL || e->not) {
2893 free(b);
2894 free(e);
2895 free($1);
2896 free($3);
2897 yyerror("invalid address range");
2898 YYERROR;
2899 }
2900 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
2901 sizeof(b->addr.v.a.mask));
2902 b->addr.type = PF_ADDR_RANGE;
2903 $$ = b;
2904 free(e);
2905 free($1);
2906 free($3);
2907 }
2908 | STRING '/' NUMBER {
2909 char *buf;
2910
2911 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1)
2912 err(1, "host: asprintf");
2913 free($1);
2914 if (($$ = host(buf)) == NULL) {
2915 /* error. "any" is handled elsewhere */
2916 free(buf);
2917 yyerror("could not parse host specification");
2918 YYERROR;
2919 }
2920 free(buf);
2921 }
2922 | NUMBER '/' NUMBER {
2923 char *buf;
2924
2925 /* ie. for 10/8 parsing */
2926#ifdef __FreeBSD__
2927 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1)
2928#else
2929 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
2930#endif
2931 err(1, "host: asprintf");
2932 if (($$ = host(buf)) == NULL) {
2933 /* error. "any" is handled elsewhere */
2934 free(buf);
2935 yyerror("could not parse host specification");
2936 YYERROR;
2937 }
2938 free(buf);
2939 }
2940 | dynaddr
2941 | dynaddr '/' NUMBER {
2942 struct node_host *n;
2943
2944 if ($3 < 0 || $3 > 128) {
2945 yyerror("bit number too big");
2946 YYERROR;
2947 }
2948 $$ = $1;
2949 for (n = $1; n != NULL; n = n->next)
2950 set_ipmask(n, $3);
2951 }
2952 | '<' STRING '>' {
2953 if (strlen($2) >= PF_TABLE_NAME_SIZE) {
2954 yyerror("table name '%s' too long", $2);
2955 free($2);
2956 YYERROR;
2957 }
2958 $$ = calloc(1, sizeof(struct node_host));
2959 if ($$ == NULL)
2960 err(1, "host: calloc");
2961 $$->addr.type = PF_ADDR_TABLE;
2962 if (strlcpy($$->addr.v.tblname, $2,
2963 sizeof($$->addr.v.tblname)) >=
2964 sizeof($$->addr.v.tblname))
2965 errx(1, "host: strlcpy");
2966 free($2);
2967 $$->next = NULL;
2968 $$->tail = $$;
2969 }
2970 ;
2971
2972number : NUMBER
2973 | STRING {
2974 u_long ulval;
2975
2976 if (atoul($1, &ulval) == -1) {
2977 yyerror("%s is not a number", $1);
2978 free($1);
2979 YYERROR;
2980 } else
2981 $$ = ulval;
2982 free($1);
2983 }
2984 ;
2985
2986dynaddr : '(' STRING ')' {
2987 int flags = 0;
2988 char *p, *op;
2989
2990 op = $2;
2991 if (!isalpha(op[0])) {
2992 yyerror("invalid interface name '%s'", op);
2993 free(op);
2994 YYERROR;
2995 }
2996 while ((p = strrchr($2, ':')) != NULL) {
2997 if (!strcmp(p+1, "network"))
2998 flags |= PFI_AFLAG_NETWORK;
2999 else if (!strcmp(p+1, "broadcast"))
3000 flags |= PFI_AFLAG_BROADCAST;
3001 else if (!strcmp(p+1, "peer"))
3002 flags |= PFI_AFLAG_PEER;
3003 else if (!strcmp(p+1, "0"))
3004 flags |= PFI_AFLAG_NOALIAS;
3005 else {
3006 yyerror("interface %s has bad modifier",
3007 $2);
3008 free(op);
3009 YYERROR;
3010 }
3011 *p = '\0';
3012 }
3013 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
3014 free(op);
3015 yyerror("illegal combination of "
3016 "interface modifiers");
3017 YYERROR;
3018 }
3019 $$ = calloc(1, sizeof(struct node_host));
3020 if ($$ == NULL)
3021 err(1, "address: calloc");
3022 $$->af = 0;
3023 set_ipmask($$, 128);
3024 $$->addr.type = PF_ADDR_DYNIFTL;
3025 $$->addr.iflags = flags;
3026 if (strlcpy($$->addr.v.ifname, $2,
3027 sizeof($$->addr.v.ifname)) >=
3028 sizeof($$->addr.v.ifname)) {
3029 free(op);
3030 free($$);
3031 yyerror("interface name too long");
3032 YYERROR;
3033 }
3034 free(op);
3035 $$->next = NULL;
3036 $$->tail = $$;
3037 }
3038 ;
3039
3040portspec : port_item { $$ = $1; }
3041 | '{' optnl port_list '}' { $$ = $3; }
3042 ;
3043
3044port_list : port_item optnl { $$ = $1; }
3045 | port_list comma port_item optnl {
3046 $1->tail->next = $3;
3047 $1->tail = $3;
3048 $$ = $1;
3049 }
3050 ;
3051
3052port_item : portrange {
3053 $$ = calloc(1, sizeof(struct node_port));
3054 if ($$ == NULL)
3055 err(1, "port_item: calloc");
3056 $$->port[0] = $1.a;
3057 $$->port[1] = $1.b;
3058 if ($1.t)
3059 $$->op = PF_OP_RRG;
3060 else
3061 $$->op = PF_OP_EQ;
3062 $$->next = NULL;
3063 $$->tail = $$;
3064 }
3065 | unaryop portrange {
3066 if ($2.t) {
3067 yyerror("':' cannot be used with an other "
3068 "port operator");
3069 YYERROR;
3070 }
3071 $$ = calloc(1, sizeof(struct node_port));
3072 if ($$ == NULL)
3073 err(1, "port_item: calloc");
3074 $$->port[0] = $2.a;
3075 $$->port[1] = $2.b;
3076 $$->op = $1;
3077 $$->next = NULL;
3078 $$->tail = $$;
3079 }
3080 | portrange PORTBINARY portrange {
3081 if ($1.t || $3.t) {
3082 yyerror("':' cannot be used with an other "
3083 "port operator");
3084 YYERROR;
3085 }
3086 $$ = calloc(1, sizeof(struct node_port));
3087 if ($$ == NULL)
3088 err(1, "port_item: calloc");
3089 $$->port[0] = $1.a;
3090 $$->port[1] = $3.a;
3091 $$->op = $2;
3092 $$->next = NULL;
3093 $$->tail = $$;
3094 }
3095 ;
3096
3097portplain : numberstring {
3098 if (parseport($1, &$$, 0) == -1) {
3099 free($1);
3100 YYERROR;
3101 }
3102 free($1);
3103 }
3104 ;
3105
3106portrange : numberstring {
3107 if (parseport($1, &$$, PPORT_RANGE) == -1) {
3108 free($1);
3109 YYERROR;
3110 }
3111 free($1);
3112 }
3113 ;
3114
3115uids : uid_item { $$ = $1; }
3116 | '{' optnl uid_list '}' { $$ = $3; }
3117 ;
3118
3119uid_list : uid_item optnl { $$ = $1; }
3120 | uid_list comma uid_item optnl {
3121 $1->tail->next = $3;
3122 $1->tail = $3;
3123 $$ = $1;
3124 }
3125 ;
3126
3127uid_item : uid {
3128 $$ = calloc(1, sizeof(struct node_uid));
3129 if ($$ == NULL)
3130 err(1, "uid_item: calloc");
3131 $$->uid[0] = $1;
3132 $$->uid[1] = $1;
3133 $$->op = PF_OP_EQ;
3134 $$->next = NULL;
3135 $$->tail = $$;
3136 }
3137 | unaryop uid {
3138 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3139 yyerror("user unknown requires operator = or "
3140 "!=");
3141 YYERROR;
3142 }
3143 $$ = calloc(1, sizeof(struct node_uid));
3144 if ($$ == NULL)
3145 err(1, "uid_item: calloc");
3146 $$->uid[0] = $2;
3147 $$->uid[1] = $2;
3148 $$->op = $1;
3149 $$->next = NULL;
3150 $$->tail = $$;
3151 }
3152 | uid PORTBINARY uid {
3153 if ($1 == UID_MAX || $3 == UID_MAX) {
3154 yyerror("user unknown requires operator = or "
3155 "!=");
3156 YYERROR;
3157 }
3158 $$ = calloc(1, sizeof(struct node_uid));
3159 if ($$ == NULL)
3160 err(1, "uid_item: calloc");
3161 $$->uid[0] = $1;
3162 $$->uid[1] = $3;
3163 $$->op = $2;
3164 $$->next = NULL;
3165 $$->tail = $$;
3166 }
3167 ;
3168
3169uid : STRING {
3170 if (!strcmp($1, "unknown"))
3171 $$ = UID_MAX;
3172 else {
3173 struct passwd *pw;
3174
3175 if ((pw = getpwnam($1)) == NULL) {
3176 yyerror("unknown user %s", $1);
3177 free($1);
3178 YYERROR;
3179 }
3180 $$ = pw->pw_uid;
3181 }
3182 free($1);
3183 }
3184 | NUMBER {
3185 if ($1 < 0 || $1 >= UID_MAX) {
3186 yyerror("illegal uid value %lu", $1);
3187 YYERROR;
3188 }
3189 $$ = $1;
3190 }
3191 ;
3192
3193gids : gid_item { $$ = $1; }
3194 | '{' optnl gid_list '}' { $$ = $3; }
3195 ;
3196
3197gid_list : gid_item optnl { $$ = $1; }
3198 | gid_list comma gid_item optnl {
3199 $1->tail->next = $3;
3200 $1->tail = $3;
3201 $$ = $1;
3202 }
3203 ;
3204
3205gid_item : gid {
3206 $$ = calloc(1, sizeof(struct node_gid));
3207 if ($$ == NULL)
3208 err(1, "gid_item: calloc");
3209 $$->gid[0] = $1;
3210 $$->gid[1] = $1;
3211 $$->op = PF_OP_EQ;
3212 $$->next = NULL;
3213 $$->tail = $$;
3214 }
3215 | unaryop gid {
3216 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3217 yyerror("group unknown requires operator = or "
3218 "!=");
3219 YYERROR;
3220 }
3221 $$ = calloc(1, sizeof(struct node_gid));
3222 if ($$ == NULL)
3223 err(1, "gid_item: calloc");
3224 $$->gid[0] = $2;
3225 $$->gid[1] = $2;
3226 $$->op = $1;
3227 $$->next = NULL;
3228 $$->tail = $$;
3229 }
3230 | gid PORTBINARY gid {
3231 if ($1 == GID_MAX || $3 == GID_MAX) {
3232 yyerror("group unknown requires operator = or "
3233 "!=");
3234 YYERROR;
3235 }
3236 $$ = calloc(1, sizeof(struct node_gid));
3237 if ($$ == NULL)
3238 err(1, "gid_item: calloc");
3239 $$->gid[0] = $1;
3240 $$->gid[1] = $3;
3241 $$->op = $2;
3242 $$->next = NULL;
3243 $$->tail = $$;
3244 }
3245 ;
3246
3247gid : STRING {
3248 if (!strcmp($1, "unknown"))
3249 $$ = GID_MAX;
3250 else {
3251 struct group *grp;
3252
3253 if ((grp = getgrnam($1)) == NULL) {
3254 yyerror("unknown group %s", $1);
3255 free($1);
3256 YYERROR;
3257 }
3258 $$ = grp->gr_gid;
3259 }
3260 free($1);
3261 }
3262 | NUMBER {
3263 if ($1 < 0 || $1 >= GID_MAX) {
3264 yyerror("illegal gid value %lu", $1);
3265 YYERROR;
3266 }
3267 $$ = $1;
3268 }
3269 ;
3270
3271flag : STRING {
3272 int f;
3273
3274 if ((f = parse_flags($1)) < 0) {
3275 yyerror("bad flags %s", $1);
3276 free($1);
3277 YYERROR;
3278 }
3279 free($1);
3280 $$.b1 = f;
3281 }
3282 ;
3283
3284flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; }
3285 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; }
3286 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; }
3287 ;
3288
3289icmpspec : ICMPTYPE icmp_item { $$ = $2; }
3290 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; }
3291 | ICMP6TYPE icmp6_item { $$ = $2; }
3292 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; }
3293 ;
3294
3295icmp_list : icmp_item optnl { $$ = $1; }
3296 | icmp_list comma icmp_item optnl {
3297 $1->tail->next = $3;
3298 $1->tail = $3;
3299 $$ = $1;
3300 }
3301 ;
3302
3303icmp6_list : icmp6_item optnl { $$ = $1; }
3304 | icmp6_list comma icmp6_item optnl {
3305 $1->tail->next = $3;
3306 $1->tail = $3;
3307 $$ = $1;
3308 }
3309 ;
3310
3311icmp_item : icmptype {
3312 $$ = calloc(1, sizeof(struct node_icmp));
3313 if ($$ == NULL)
3314 err(1, "icmp_item: calloc");
3315 $$->type = $1;
3316 $$->code = 0;
3317 $$->proto = IPPROTO_ICMP;
3318 $$->next = NULL;
3319 $$->tail = $$;
3320 }
3321 | icmptype CODE STRING {
3322 const struct icmpcodeent *p;
3323
3324 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3325 yyerror("unknown icmp-code %s", $3);
3326 free($3);
3327 YYERROR;
3328 }
3329
3330 free($3);
3331 $$ = calloc(1, sizeof(struct node_icmp));
3332 if ($$ == NULL)
3333 err(1, "icmp_item: calloc");
3334 $$->type = $1;
3335 $$->code = p->code + 1;
3336 $$->proto = IPPROTO_ICMP;
3337 $$->next = NULL;
3338 $$->tail = $$;
3339 }
3340 | icmptype CODE NUMBER {
3341 if ($3 < 0 || $3 > 255) {
3342 yyerror("illegal icmp-code %lu", $3);
3343 YYERROR;
3344 }
3345 $$ = calloc(1, sizeof(struct node_icmp));
3346 if ($$ == NULL)
3347 err(1, "icmp_item: calloc");
3348 $$->type = $1;
3349 $$->code = $3 + 1;
3350 $$->proto = IPPROTO_ICMP;
3351 $$->next = NULL;
3352 $$->tail = $$;
3353 }
3354 ;
3355
3356icmp6_item : icmp6type {
3357 $$ = calloc(1, sizeof(struct node_icmp));
3358 if ($$ == NULL)
3359 err(1, "icmp_item: calloc");
3360 $$->type = $1;
3361 $$->code = 0;
3362 $$->proto = IPPROTO_ICMPV6;
3363 $$->next = NULL;
3364 $$->tail = $$;
3365 }
3366 | icmp6type CODE STRING {
3367 const struct icmpcodeent *p;
3368
3369 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3370 yyerror("unknown icmp6-code %s", $3);
3371 free($3);
3372 YYERROR;
3373 }
3374 free($3);
3375
3376 $$ = calloc(1, sizeof(struct node_icmp));
3377 if ($$ == NULL)
3378 err(1, "icmp_item: calloc");
3379 $$->type = $1;
3380 $$->code = p->code + 1;
3381 $$->proto = IPPROTO_ICMPV6;
3382 $$->next = NULL;
3383 $$->tail = $$;
3384 }
3385 | icmp6type CODE NUMBER {
3386 if ($3 < 0 || $3 > 255) {
3387 yyerror("illegal icmp-code %lu", $3);
3388 YYERROR;
3389 }
3390 $$ = calloc(1, sizeof(struct node_icmp));
3391 if ($$ == NULL)
3392 err(1, "icmp_item: calloc");
3393 $$->type = $1;
3394 $$->code = $3 + 1;
3395 $$->proto = IPPROTO_ICMPV6;
3396 $$->next = NULL;
3397 $$->tail = $$;
3398 }
3399 ;
3400
3401icmptype : STRING {
3402 const struct icmptypeent *p;
3403
3404 if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
3405 yyerror("unknown icmp-type %s", $1);
3406 free($1);
3407 YYERROR;
3408 }
3409 $$ = p->type + 1;
3410 free($1);
3411 }
3412 | NUMBER {
3413 if ($1 < 0 || $1 > 255) {
3414 yyerror("illegal icmp-type %lu", $1);
3415 YYERROR;
3416 }
3417 $$ = $1 + 1;
3418 }
3419 ;
3420
3421icmp6type : STRING {
3422 const struct icmptypeent *p;
3423
3424 if ((p = geticmptypebyname($1, AF_INET6)) ==
3425 NULL) {
3426 yyerror("unknown icmp6-type %s", $1);
3427 free($1);
3428 YYERROR;
3429 }
3430 $$ = p->type + 1;
3431 free($1);
3432 }
3433 | NUMBER {
3434 if ($1 < 0 || $1 > 255) {
3435 yyerror("illegal icmp6-type %lu", $1);
3436 YYERROR;
3437 }
3438 $$ = $1 + 1;
3439 }
3440 ;
3441
3442tos : STRING {
3443 if (!strcmp($1, "lowdelay"))
3444 $$ = IPTOS_LOWDELAY;
3445 else if (!strcmp($1, "throughput"))
3446 $$ = IPTOS_THROUGHPUT;
3447 else if (!strcmp($1, "reliability"))
3448 $$ = IPTOS_RELIABILITY;
3449 else if ($1[0] == '0' && $1[1] == 'x')
3450 $$ = strtoul($1, NULL, 16);
3451 else
3452 $$ = 0; /* flag bad argument */
3453 if (!$$ || $$ > 255) {
3454 yyerror("illegal tos value %s", $1);
3455 free($1);
3456 YYERROR;
3457 }
3458 free($1);
3459 }
3460 | NUMBER {
3461 $$ = $1;
3462 if (!$$ || $$ > 255) {
3463 yyerror("illegal tos value %s", $1);
3464 YYERROR;
3465 }
3466 }
3467 ;
3468
3469sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; }
3470 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; }
3471 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; }
3472 ;
3473
3474statelock : IFBOUND {
3475 $$ = PFRULE_IFBOUND;
3476 }
3477 | FLOATING {
3478 $$ = 0;
3479 }
3480 ;
3481
3482keep : NO STATE {
3483 $$.action = 0;
3484 $$.options = NULL;
3485 }
3486 | KEEP STATE state_opt_spec {
3487 $$.action = PF_STATE_NORMAL;
3488 $$.options = $3;
3489 }
3490 | MODULATE STATE state_opt_spec {
3491 $$.action = PF_STATE_MODULATE;
3492 $$.options = $3;
3493 }
3494 | SYNPROXY STATE state_opt_spec {
3495 $$.action = PF_STATE_SYNPROXY;
3496 $$.options = $3;
3497 }
3498 ;
3499
3500flush : /* empty */ { $$ = 0; }
3501 | FLUSH { $$ = PF_FLUSH; }
3502 | FLUSH GLOBAL {
3503 $$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3504 }
3505 ;
3506
3507state_opt_spec : '(' state_opt_list ')' { $$ = $2; }
3508 | /* empty */ { $$ = NULL; }
3509 ;
3510
3511state_opt_list : state_opt_item { $$ = $1; }
3512 | state_opt_list comma state_opt_item {
3513 $1->tail->next = $3;
3514 $1->tail = $3;
3515 $$ = $1;
3516 }
3517 ;
3518
3519state_opt_item : MAXIMUM NUMBER {
3520 if ($2 < 0 || $2 > UINT_MAX) {
3521 yyerror("only positive values permitted");
3522 YYERROR;
3523 }
3524 $$ = calloc(1, sizeof(struct node_state_opt));
3525 if ($$ == NULL)
3526 err(1, "state_opt_item: calloc");
3527 $$->type = PF_STATE_OPT_MAX;
3528 $$->data.max_states = $2;
3529 $$->next = NULL;
3530 $$->tail = $$;
3531 }
3532 | NOSYNC {
3533 $$ = calloc(1, sizeof(struct node_state_opt));
3534 if ($$ == NULL)
3535 err(1, "state_opt_item: calloc");
3536 $$->type = PF_STATE_OPT_NOSYNC;
3537 $$->next = NULL;
3538 $$->tail = $$;
3539 }
3540 | MAXSRCSTATES NUMBER {
3541 if ($2 < 0 || $2 > UINT_MAX) {
3542 yyerror("only positive values permitted");
3543 YYERROR;
3544 }
3545 $$ = calloc(1, sizeof(struct node_state_opt));
3546 if ($$ == NULL)
3547 err(1, "state_opt_item: calloc");
3548 $$->type = PF_STATE_OPT_MAX_SRC_STATES;
3549 $$->data.max_src_states = $2;
3550 $$->next = NULL;
3551 $$->tail = $$;
3552 }
3553 | MAXSRCCONN NUMBER {
3554 if ($2 < 0 || $2 > UINT_MAX) {
3555 yyerror("only positive values permitted");
3556 YYERROR;
3557 }
3558 $$ = calloc(1, sizeof(struct node_state_opt));
3559 if ($$ == NULL)
3560 err(1, "state_opt_item: calloc");
3561 $$->type = PF_STATE_OPT_MAX_SRC_CONN;
3562 $$->data.max_src_conn = $2;
3563 $$->next = NULL;
3564 $$->tail = $$;
3565 }
3566 | MAXSRCCONNRATE NUMBER '/' NUMBER {
3567 if ($2 < 0 || $2 > UINT_MAX ||
3568 $4 < 0 || $4 > UINT_MAX) {
3569 yyerror("only positive values permitted");
3570 YYERROR;
3571 }
3572 $$ = calloc(1, sizeof(struct node_state_opt));
3573 if ($$ == NULL)
3574 err(1, "state_opt_item: calloc");
3575 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3576 $$->data.max_src_conn_rate.limit = $2;
3577 $$->data.max_src_conn_rate.seconds = $4;
3578 $$->next = NULL;
3579 $$->tail = $$;
3580 }
3581 | OVERLOAD '<' STRING '>' flush {
3582 if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3583 yyerror("table name '%s' too long", $3);
3584 free($3);
3585 YYERROR;
3586 }
3587 $$ = calloc(1, sizeof(struct node_state_opt));
3588 if ($$ == NULL)
3589 err(1, "state_opt_item: calloc");
3590 if (strlcpy($$->data.overload.tblname, $3,
3591 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3592 errx(1, "state_opt_item: strlcpy");
3593 free($3);
3594 $$->type = PF_STATE_OPT_OVERLOAD;
3595 $$->data.overload.flush = $5;
3596 $$->next = NULL;
3597 $$->tail = $$;
3598 }
3599 | MAXSRCNODES NUMBER {
3600 if ($2 < 0 || $2 > UINT_MAX) {
3601 yyerror("only positive values permitted");
3602 YYERROR;
3603 }
3604 $$ = calloc(1, sizeof(struct node_state_opt));
3605 if ($$ == NULL)
3606 err(1, "state_opt_item: calloc");
3607 $$->type = PF_STATE_OPT_MAX_SRC_NODES;
3608 $$->data.max_src_nodes = $2;
3609 $$->next = NULL;
3610 $$->tail = $$;
3611 }
3612 | sourcetrack {
3613 $$ = calloc(1, sizeof(struct node_state_opt));
3614 if ($$ == NULL)
3615 err(1, "state_opt_item: calloc");
3616 $$->type = PF_STATE_OPT_SRCTRACK;
3617 $$->data.src_track = $1;
3618 $$->next = NULL;
3619 $$->tail = $$;
3620 }
3621 | statelock {
3622 $$ = calloc(1, sizeof(struct node_state_opt));
3623 if ($$ == NULL)
3624 err(1, "state_opt_item: calloc");
3625 $$->type = PF_STATE_OPT_STATELOCK;
3626 $$->data.statelock = $1;
3627 $$->next = NULL;
3628 $$->tail = $$;
3629 }
3630 | SLOPPY {
3631 $$ = calloc(1, sizeof(struct node_state_opt));
3632 if ($$ == NULL)
3633 err(1, "state_opt_item: calloc");
3634 $$->type = PF_STATE_OPT_SLOPPY;
3635 $$->next = NULL;
3636 $$->tail = $$;
3637 }
3638 | STRING NUMBER {
3639 int i;
3640
3641 if ($2 < 0 || $2 > UINT_MAX) {
3642 yyerror("only positive values permitted");
3643 YYERROR;
3644 }
3645 for (i = 0; pf_timeouts[i].name &&
3646 strcmp(pf_timeouts[i].name, $1); ++i)
3647 ; /* nothing */
3648 if (!pf_timeouts[i].name) {
3649 yyerror("illegal timeout name %s", $1);
3650 free($1);
3651 YYERROR;
3652 }
3653 if (strchr(pf_timeouts[i].name, '.') == NULL) {
3654 yyerror("illegal state timeout %s", $1);
3655 free($1);
3656 YYERROR;
3657 }
3658 free($1);
3659 $$ = calloc(1, sizeof(struct node_state_opt));
3660 if ($$ == NULL)
3661 err(1, "state_opt_item: calloc");
3662 $$->type = PF_STATE_OPT_TIMEOUT;
3663 $$->data.timeout.number = pf_timeouts[i].timeout;
3664 $$->data.timeout.seconds = $2;
3665 $$->next = NULL;
3666 $$->tail = $$;
3667 }
3668 ;
3669
3670label : LABEL STRING {
3671 $$ = $2;
3672 }
3673 ;
3674
3675qname : QUEUE STRING {
3676 $$.qname = $2;
3677 $$.pqname = NULL;
3678 }
3679 | QUEUE '(' STRING ')' {
3680 $$.qname = $3;
3681 $$.pqname = NULL;
3682 }
3683 | QUEUE '(' STRING comma STRING ')' {
3684 $$.qname = $3;
3685 $$.pqname = $5;
3686 }
3687 ;
3688
3689no : /* empty */ { $$ = 0; }
3690 | NO { $$ = 1; }
3691 ;
3692
3693portstar : numberstring {
3694 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
3695 free($1);
3696 YYERROR;
3697 }
3698 free($1);
3699 }
3700 ;
3701
3702redirspec : host { $$ = $1; }
3703 | '{' optnl redir_host_list '}' { $$ = $3; }
3704 ;
3705
3706redir_host_list : host optnl { $$ = $1; }
3707 | redir_host_list comma host optnl {
3708 $1->tail->next = $3;
3709 $1->tail = $3->tail;
3710 $$ = $1;
3711 }
3712 ;
3713
3714redirpool : /* empty */ { $$ = NULL; }
3715 | ARROW redirspec {
3716 $$ = calloc(1, sizeof(struct redirection));
3717 if ($$ == NULL)
3718 err(1, "redirection: calloc");
3719 $$->host = $2;
3720 $$->rport.a = $$->rport.b = $$->rport.t = 0;
3721 }
3722 | ARROW redirspec PORT portstar {
3723 $$ = calloc(1, sizeof(struct redirection));
3724 if ($$ == NULL)
3725 err(1, "redirection: calloc");
3726 $$->host = $2;
3727 $$->rport = $4;
3728 }
3729 ;
3730
3731hashkey : /* empty */
3732 {
3733 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3734 if ($$ == NULL)
3735 err(1, "hashkey: calloc");
3736 $$->key32[0] = arc4random();
3737 $$->key32[1] = arc4random();
3738 $$->key32[2] = arc4random();
3739 $$->key32[3] = arc4random();
3740 }
3741 | string
3742 {
3743 if (!strncmp($1, "0x", 2)) {
3744 if (strlen($1) != 34) {
3745 free($1);
3746 yyerror("hex key must be 128 bits "
3747 "(32 hex digits) long");
3748 YYERROR;
3749 }
3750 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3751 if ($$ == NULL)
3752 err(1, "hashkey: calloc");
3753
3754 if (sscanf($1, "0x%8x%8x%8x%8x",
3755 &$$->key32[0], &$$->key32[1],
3756 &$$->key32[2], &$$->key32[3]) != 4) {
3757 free($$);
3758 free($1);
3759 yyerror("invalid hex key");
3760 YYERROR;
3761 }
3762 } else {
3763 MD5_CTX context;
3764
3765 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3766 if ($$ == NULL)
3767 err(1, "hashkey: calloc");
3768 MD5Init(&context);
3769 MD5Update(&context, (unsigned char *)$1,
3770 strlen($1));
3771 MD5Final((unsigned char *)$$, &context);
3772 HTONL($$->key32[0]);
3773 HTONL($$->key32[1]);
3774 HTONL($$->key32[2]);
3775 HTONL($$->key32[3]);
3776 }
3777 free($1);
3778 }
3779 ;
3780
3781pool_opts : { bzero(&pool_opts, sizeof pool_opts); }
3782 pool_opts_l
3783 { $$ = pool_opts; }
3784 | /* empty */ {
3785 bzero(&pool_opts, sizeof pool_opts);
3786 $$ = pool_opts;
3787 }
3788 ;
3789
3790pool_opts_l : pool_opts_l pool_opt
3791 | pool_opt
3792 ;
3793
3794pool_opt : BITMASK {
3795 if (pool_opts.type) {
3796 yyerror("pool type cannot be redefined");
3797 YYERROR;
3798 }
3799 pool_opts.type = PF_POOL_BITMASK;
3800 }
3801 | RANDOM {
3802 if (pool_opts.type) {
3803 yyerror("pool type cannot be redefined");
3804 YYERROR;
3805 }
3806 pool_opts.type = PF_POOL_RANDOM;
3807 }
3808 | SOURCEHASH hashkey {
3809 if (pool_opts.type) {
3810 yyerror("pool type cannot be redefined");
3811 YYERROR;
3812 }
3813 pool_opts.type = PF_POOL_SRCHASH;
3814 pool_opts.key = $2;
3815 }
3816 | ROUNDROBIN {
3817 if (pool_opts.type) {
3818 yyerror("pool type cannot be redefined");
3819 YYERROR;
3820 }
3821 pool_opts.type = PF_POOL_ROUNDROBIN;
3822 }
3823 | STATICPORT {
3824 if (pool_opts.staticport) {
3825 yyerror("static-port cannot be redefined");
3826 YYERROR;
3827 }
3828 pool_opts.staticport = 1;
3829 }
3830 | STICKYADDRESS {
3831 if (filter_opts.marker & POM_STICKYADDRESS) {
3832 yyerror("sticky-address cannot be redefined");
3833 YYERROR;
3834 }
3835 pool_opts.marker |= POM_STICKYADDRESS;
3836 pool_opts.opts |= PF_POOL_STICKYADDR;
3837 }
3838 ;
3839
3840redirection : /* empty */ { $$ = NULL; }
3841 | ARROW host {
3842 $$ = calloc(1, sizeof(struct redirection));
3843 if ($$ == NULL)
3844 err(1, "redirection: calloc");
3845 $$->host = $2;
3846 $$->rport.a = $$->rport.b = $$->rport.t = 0;
3847 }
3848 | ARROW host PORT portstar {
3849 $$ = calloc(1, sizeof(struct redirection));
3850 if ($$ == NULL)
3851 err(1, "redirection: calloc");
3852 $$->host = $2;
3853 $$->rport = $4;
3854 }
3855 ;
3856
3857natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; }
3858 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; }
3859 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; }
3860 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; }
3861 ;
3862
3863nataction : no NAT natpasslog {
3864 if ($1 && $3.b1) {
3865 yyerror("\"pass\" not valid with \"no\"");
3866 YYERROR;
3867 }
3868 if ($1)
3869 $$.b1 = PF_NONAT;
3870 else
3871 $$.b1 = PF_NAT;
3872 $$.b2 = $3.b1;
3873 $$.w = $3.b2;
3874 $$.w2 = $3.w2;
3875 }
3876 | no RDR natpasslog {
3877 if ($1 && $3.b1) {
3878 yyerror("\"pass\" not valid with \"no\"");
3879 YYERROR;
3880 }
3881 if ($1)
3882 $$.b1 = PF_NORDR;
3883 else
3884 $$.b1 = PF_RDR;
3885 $$.b2 = $3.b1;
3886 $$.w = $3.b2;
3887 $$.w2 = $3.w2;
3888 }
3889 ;
3890
3891natrule : nataction interface af proto fromto tag tagged rtable
3892 redirpool pool_opts
3893 {
3894 struct pf_rule r;
3895
3896 if (check_rulestate(PFCTL_STATE_NAT))
3897 YYERROR;
3898
3899 memset(&r, 0, sizeof(r));
3900
3901 r.action = $1.b1;
3902 r.natpass = $1.b2;
3903 r.log = $1.w;
3904 r.logif = $1.w2;
3905 r.af = $3;
3906
3907 if (!r.af) {
3908 if ($5.src.host && $5.src.host->af &&
3909 !$5.src.host->ifindex)
3910 r.af = $5.src.host->af;
3911 else if ($5.dst.host && $5.dst.host->af &&
3912 !$5.dst.host->ifindex)
3913 r.af = $5.dst.host->af;
3914 }
3915
3916 if ($6 != NULL)
3917 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
3918 PF_TAG_NAME_SIZE) {
3919 yyerror("tag too long, max %u chars",
3920 PF_TAG_NAME_SIZE - 1);
3921 YYERROR;
3922 }
3923
3924 if ($7.name)
3925 if (strlcpy(r.match_tagname, $7.name,
3926 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
3927 yyerror("tag too long, max %u chars",
3928 PF_TAG_NAME_SIZE - 1);
3929 YYERROR;
3930 }
3931 r.match_tag_not = $7.neg;
3932 r.rtableid = $8;
3933
3934 if (r.action == PF_NONAT || r.action == PF_NORDR) {
3935 if ($9 != NULL) {
3936 yyerror("translation rule with 'no' "
3937 "does not need '->'");
3938 YYERROR;
3939 }
3940 } else {
3941 if ($9 == NULL || $9->host == NULL) {
3942 yyerror("translation rule requires '-> "
3943 "address'");
3944 YYERROR;
3945 }
3946 if (!r.af && ! $9->host->ifindex)
3947 r.af = $9->host->af;
3948
3949 remove_invalid_hosts(&$9->host, &r.af);
3950 if (invalid_redirect($9->host, r.af))
3951 YYERROR;
3952 if (check_netmask($9->host, r.af))
3953 YYERROR;
3954
3955 r.rpool.proxy_port[0] = ntohs($9->rport.a);
3956
3957 switch (r.action) {
3958 case PF_RDR:
3959 if (!$9->rport.b && $9->rport.t &&
3960 $5.dst.port != NULL) {
3961 r.rpool.proxy_port[1] =
3962 ntohs($9->rport.a) +
3963 (ntohs(
3964 $5.dst.port->port[1]) -
3965 ntohs(
3966 $5.dst.port->port[0]));
3967 } else
3968 r.rpool.proxy_port[1] =
3969 ntohs($9->rport.b);
3970 break;
3971 case PF_NAT:
3972 r.rpool.proxy_port[1] =
3973 ntohs($9->rport.b);
3974 if (!r.rpool.proxy_port[0] &&
3975 !r.rpool.proxy_port[1]) {
3976 r.rpool.proxy_port[0] =
3977 PF_NAT_PROXY_PORT_LOW;
3978 r.rpool.proxy_port[1] =
3979 PF_NAT_PROXY_PORT_HIGH;
3980 } else if (!r.rpool.proxy_port[1])
3981 r.rpool.proxy_port[1] =
3982 r.rpool.proxy_port[0];
3983 break;
3984 default:
3985 break;
3986 }
3987
3988 r.rpool.opts = $10.type;
3989 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
3990 PF_POOL_NONE && ($9->host->next != NULL ||
3991 $9->host->addr.type == PF_ADDR_TABLE ||
3992 DYNIF_MULTIADDR($9->host->addr)))
3993 r.rpool.opts = PF_POOL_ROUNDROBIN;
3994 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
3995 PF_POOL_ROUNDROBIN &&
3996 disallow_table($9->host, "tables are only "
3997 "supported in round-robin redirection "
3998 "pools"))
3999 YYERROR;
4000 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4001 PF_POOL_ROUNDROBIN &&
4002 disallow_alias($9->host, "interface (%s) "
4003 "is only supported in round-robin "
4004 "redirection pools"))
4005 YYERROR;
4006 if ($9->host->next != NULL) {
4007 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4008 PF_POOL_ROUNDROBIN) {
4009 yyerror("only round-robin "
4010 "valid for multiple "
4011 "redirection addresses");
4012 YYERROR;
4013 }
4014 }
4015 }
4016
4017 if ($10.key != NULL)
4018 memcpy(&r.rpool.key, $10.key,
4019 sizeof(struct pf_poolhashkey));
4020
4021 if ($10.opts)
4022 r.rpool.opts |= $10.opts;
4023
4024 if ($10.staticport) {
4025 if (r.action != PF_NAT) {
4026 yyerror("the 'static-port' option is "
4027 "only valid with nat rules");
4028 YYERROR;
4029 }
4030 if (r.rpool.proxy_port[0] !=
4031 PF_NAT_PROXY_PORT_LOW &&
4032 r.rpool.proxy_port[1] !=
4033 PF_NAT_PROXY_PORT_HIGH) {
4034 yyerror("the 'static-port' option can't"
4035 " be used when specifying a port"
4036 " range");
4037 YYERROR;
4038 }
4039 r.rpool.proxy_port[0] = 0;
4040 r.rpool.proxy_port[1] = 0;
4041 }
4042
4043 expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4,
4044 $5.src_os, $5.src.host, $5.src.port, $5.dst.host,
4045 $5.dst.port, 0, 0, 0, "");
4046 free($9);
4047 }
4048 ;
4049
4050binatrule : no BINAT natpasslog interface af proto FROM host toipspec tag
4051 tagged rtable redirection
4052 {
4053 struct pf_rule binat;
4054 struct pf_pooladdr *pa;
4055
4056 if (check_rulestate(PFCTL_STATE_NAT))
4057 YYERROR;
4058 if (disallow_urpf_failed($9, "\"urpf-failed\" is not "
4059 "permitted as a binat destination"))
4060 YYERROR;
4061
4062 memset(&binat, 0, sizeof(binat));
4063
4064 if ($1 && $3.b1) {
4065 yyerror("\"pass\" not valid with \"no\"");
4066 YYERROR;
4067 }
4068 if ($1)
4069 binat.action = PF_NOBINAT;
4070 else
4071 binat.action = PF_BINAT;
4072 binat.natpass = $3.b1;
4073 binat.log = $3.b2;
4074 binat.logif = $3.w2;
4075 binat.af = $5;
4076 if (!binat.af && $8 != NULL && $8->af)
4077 binat.af = $8->af;
4078 if (!binat.af && $9 != NULL && $9->af)
4079 binat.af = $9->af;
4080
4081 if (!binat.af && $13 != NULL && $13->host)
4082 binat.af = $13->host->af;
4083 if (!binat.af) {
4084 yyerror("address family (inet/inet6) "
4085 "undefined");
4086 YYERROR;
4087 }
4088
4089 if ($4 != NULL) {
4090 memcpy(binat.ifname, $4->ifname,
4091 sizeof(binat.ifname));
4092 binat.ifnot = $4->not;
4093 free($4);
4094 }
4095
4096 if ($10 != NULL)
4097 if (strlcpy(binat.tagname, $10,
4098 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4099 yyerror("tag too long, max %u chars",
4100 PF_TAG_NAME_SIZE - 1);
4101 YYERROR;
4102 }
4103 if ($11.name)
4104 if (strlcpy(binat.match_tagname, $11.name,
4105 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4106 yyerror("tag too long, max %u chars",
4107 PF_TAG_NAME_SIZE - 1);
4108 YYERROR;
4109 }
4110 binat.match_tag_not = $11.neg;
4111 binat.rtableid = $12;
4112
4113 if ($6 != NULL) {
4114 binat.proto = $6->proto;
4115 free($6);
4116 }
4117
4118 if ($8 != NULL && disallow_table($8, "invalid use of "
4119 "table <%s> as the source address of a binat rule"))
4120 YYERROR;
4121 if ($8 != NULL && disallow_alias($8, "invalid use of "
4122 "interface (%s) as the source address of a binat "
4123 "rule"))
4124 YYERROR;
4125 if ($13 != NULL && $13->host != NULL && disallow_table(
4126 $13->host, "invalid use of table <%s> as the "
4127 "redirect address of a binat rule"))
4128 YYERROR;
4129 if ($13 != NULL && $13->host != NULL && disallow_alias(
4130 $13->host, "invalid use of interface (%s) as the "
4131 "redirect address of a binat rule"))
4132 YYERROR;
4133
4134 if ($8 != NULL) {
4135 if ($8->next) {
4136 yyerror("multiple binat ip addresses");
4137 YYERROR;
4138 }
4139 if ($8->addr.type == PF_ADDR_DYNIFTL)
4140 $8->af = binat.af;
4141 if ($8->af != binat.af) {
4142 yyerror("binat ip versions must match");
4143 YYERROR;
4144 }
4145 if (check_netmask($8, binat.af))
4146 YYERROR;
4147 memcpy(&binat.src.addr, &$8->addr,
4148 sizeof(binat.src.addr));
4149 free($8);
4150 }
4151 if ($9 != NULL) {
4152 if ($9->next) {
4153 yyerror("multiple binat ip addresses");
4154 YYERROR;
4155 }
4156 if ($9->af != binat.af && $9->af) {
4157 yyerror("binat ip versions must match");
4158 YYERROR;
4159 }
4160 if (check_netmask($9, binat.af))
4161 YYERROR;
4162 memcpy(&binat.dst.addr, &$9->addr,
4163 sizeof(binat.dst.addr));
4164 binat.dst.neg = $9->not;
4165 free($9);
4166 }
4167
4168 if (binat.action == PF_NOBINAT) {
4169 if ($13 != NULL) {
4170 yyerror("'no binat' rule does not need"
4171 " '->'");
4172 YYERROR;
4173 }
4174 } else {
4175 if ($13 == NULL || $13->host == NULL) {
4176 yyerror("'binat' rule requires"
4177 " '-> address'");
4178 YYERROR;
4179 }
4180
4181 remove_invalid_hosts(&$13->host, &binat.af);
4182 if (invalid_redirect($13->host, binat.af))
4183 YYERROR;
4184 if ($13->host->next != NULL) {
4185 yyerror("binat rule must redirect to "
4186 "a single address");
4187 YYERROR;
4188 }
4189 if (check_netmask($13->host, binat.af))
4190 YYERROR;
4191
4192 if (!PF_AZERO(&binat.src.addr.v.a.mask,
4193 binat.af) &&
4194 !PF_AEQ(&binat.src.addr.v.a.mask,
4195 &$13->host->addr.v.a.mask, binat.af)) {
4196 yyerror("'binat' source mask and "
4197 "redirect mask must be the same");
4198 YYERROR;
4199 }
4200
4201 TAILQ_INIT(&binat.rpool.list);
4202 pa = calloc(1, sizeof(struct pf_pooladdr));
4203 if (pa == NULL)
4204 err(1, "binat: calloc");
4205 pa->addr = $13->host->addr;
4206 pa->ifname[0] = 0;
4207 TAILQ_INSERT_TAIL(&binat.rpool.list,
4208 pa, entries);
4209
4210 free($13);
4211 }
4212
4213 pfctl_add_rule(pf, &binat, "");
4214 }
4215 ;
4216
4217tag : /* empty */ { $$ = NULL; }
4218 | TAG STRING { $$ = $2; }
4219 ;
4220
4221tagged : /* empty */ { $$.neg = 0; $$.name = NULL; }
4222 | not TAGGED string { $$.neg = $1; $$.name = $3; }
4223 ;
4224
4225rtable : /* empty */ { $$ = -1; }
4226 | RTABLE NUMBER {
4227 if ($2 < 0 || $2 > rt_tableid_max()) {
4228 yyerror("invalid rtable id");
4229 YYERROR;
4230 }
4231 $$ = $2;
4232 }
4233 ;
4234
4235route_host : STRING {
4236 $$ = calloc(1, sizeof(struct node_host));
4237 if ($$ == NULL)
4238 err(1, "route_host: calloc");
4239 $$->ifname = $1;
4240 set_ipmask($$, 128);
4241 $$->next = NULL;
4242 $$->tail = $$;
4243 }
4244 | '(' STRING host ')' {
4245 $$ = $3;
4246 $$->ifname = $2;
4247 }
4248 ;
4249
4250route_host_list : route_host optnl { $$ = $1; }
4251 | route_host_list comma route_host optnl {
4252 if ($1->af == 0)
4253 $1->af = $3->af;
4254 if ($1->af != $3->af) {
4255 yyerror("all pool addresses must be in the "
4256 "same address family");
4257 YYERROR;
4258 }
4259 $1->tail->next = $3;
4260 $1->tail = $3->tail;
4261 $$ = $1;
4262 }
4263 ;
4264
4265routespec : route_host { $$ = $1; }
4266 | '{' optnl route_host_list '}' { $$ = $3; }
4267 ;
4268
4269route : /* empty */ {
4270 $$.host = NULL;
4271 $$.rt = 0;
4272 $$.pool_opts = 0;
4273 }
4274 | FASTROUTE {
4275 $$.host = NULL;
4276 $$.rt = PF_FASTROUTE;
4277 $$.pool_opts = 0;
4278 }
4279 | ROUTETO routespec pool_opts {
4280 $$.host = $2;
4281 $$.rt = PF_ROUTETO;
4282 $$.pool_opts = $3.type | $3.opts;
4283 if ($3.key != NULL)
4284 $$.key = $3.key;
4285 }
4286 | REPLYTO routespec pool_opts {
4287 $$.host = $2;
4288 $$.rt = PF_REPLYTO;
4289 $$.pool_opts = $3.type | $3.opts;
4290 if ($3.key != NULL)
4291 $$.key = $3.key;
4292 }
4293 | DUPTO routespec pool_opts {
4294 $$.host = $2;
4295 $$.rt = PF_DUPTO;
4296 $$.pool_opts = $3.type | $3.opts;
4297 if ($3.key != NULL)
4298 $$.key = $3.key;
4299 }
4300 ;
4301
4302timeout_spec : STRING NUMBER
4303 {
4304 if (check_rulestate(PFCTL_STATE_OPTION)) {
4305 free($1);
4306 YYERROR;
4307 }
4308 if ($2 < 0 || $2 > UINT_MAX) {
4309 yyerror("only positive values permitted");
4310 YYERROR;
4311 }
4312 if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
4313 yyerror("unknown timeout %s", $1);
4314 free($1);
4315 YYERROR;
4316 }
4317 free($1);
4318 }
4319 ;
4320
4321timeout_list : timeout_list comma timeout_spec optnl
4322 | timeout_spec optnl
4323 ;
4324
4325limit_spec : STRING NUMBER
4326 {
4327 if (check_rulestate(PFCTL_STATE_OPTION)) {
4328 free($1);
4329 YYERROR;
4330 }
4331 if ($2 < 0 || $2 > UINT_MAX) {
4332 yyerror("only positive values permitted");
4333 YYERROR;
4334 }
4335 if (pfctl_set_limit(pf, $1, $2) != 0) {
4336 yyerror("unable to set limit %s %u", $1, $2);
4337 free($1);
4338 YYERROR;
4339 }
4340 free($1);
4341 }
4342 ;
4343
4344limit_list : limit_list comma limit_spec optnl
4345 | limit_spec optnl
4346 ;
4347
4348comma : ','
4349 | /* empty */
4350 ;
4351
4352yesno : NO { $$ = 0; }
4353 | STRING {
4354 if (!strcmp($1, "yes"))
4355 $$ = 1;
4356 else {
4357 yyerror("invalid value '%s', expected 'yes' "
4358 "or 'no'", $1);
4359 free($1);
4360 YYERROR;
4361 }
4362 free($1);
4363 }
4364 ;
4365
4366unaryop : '=' { $$ = PF_OP_EQ; }
4367 | '!' '=' { $$ = PF_OP_NE; }
4368 | '<' '=' { $$ = PF_OP_LE; }
4369 | '<' { $$ = PF_OP_LT; }
4370 | '>' '=' { $$ = PF_OP_GE; }
4371 | '>' { $$ = PF_OP_GT; }
4372 ;
4373
4374%%
4375
4376int
4377yyerror(const char *fmt, ...)
4378{
4379 va_list ap;
4380
4381 file->errors++;
4382 va_start(ap, fmt);
4383 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
4384 vfprintf(stderr, fmt, ap);
4385 fprintf(stderr, "\n");
4386 va_end(ap);
4387 return (0);
4388}
4389
4390int
4391disallow_table(struct node_host *h, const char *fmt)
4392{
4393 for (; h != NULL; h = h->next)
4394 if (h->addr.type == PF_ADDR_TABLE) {
4395 yyerror(fmt, h->addr.v.tblname);
4396 return (1);
4397 }
4398 return (0);
4399}
4400
4401int
4402disallow_urpf_failed(struct node_host *h, const char *fmt)
4403{
4404 for (; h != NULL; h = h->next)
4405 if (h->addr.type == PF_ADDR_URPFFAILED) {
4406 yyerror(fmt);
4407 return (1);
4408 }
4409 return (0);
4410}
4411
4412int
4413disallow_alias(struct node_host *h, const char *fmt)
4414{
4415 for (; h != NULL; h = h->next)
4416 if (DYNIF_MULTIADDR(h->addr)) {
4417 yyerror(fmt, h->addr.v.tblname);
4418 return (1);
4419 }
4420 return (0);
4421}
4422
4423int
4424rule_consistent(struct pf_rule *r, int anchor_call)
4425{
4426 int problems = 0;
4427
4428 switch (r->action) {
4429 case PF_PASS:
4430 case PF_DROP:
4431 case PF_SCRUB:
4432 case PF_NOSCRUB:
4433 problems = filter_consistent(r, anchor_call);
4434 break;
4435 case PF_NAT:
4436 case PF_NONAT:
4437 problems = nat_consistent(r);
4438 break;
4439 case PF_RDR:
4440 case PF_NORDR:
4441 problems = rdr_consistent(r);
4442 break;
4443 case PF_BINAT:
4444 case PF_NOBINAT:
4445 default:
4446 break;
4447 }
4448 return (problems);
4449}
4450
4451int
4452filter_consistent(struct pf_rule *r, int anchor_call)
4453{
4454 int problems = 0;
4455
4456 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
4457 (r->src.port_op || r->dst.port_op)) {
4458 yyerror("port only applies to tcp/udp");
4459 problems++;
4460 }
4461 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
4462 (r->type || r->code)) {
4463 yyerror("icmp-type/code only applies to icmp");
4464 problems++;
4465 }
4466 if (!r->af && (r->type || r->code)) {
4467 yyerror("must indicate address family with icmp-type/code");
4468 problems++;
4469 }
4470 if (r->overload_tblname[0] &&
4471 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
4472 yyerror("'overload' requires 'max-src-conn' "
4473 "or 'max-src-conn-rate'");
4474 problems++;
4475 }
4476 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
4477 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
4478 yyerror("proto %s doesn't match address family %s",
4479 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
4480 r->af == AF_INET ? "inet" : "inet6");
4481 problems++;
4482 }
4483 if (r->allow_opts && r->action != PF_PASS) {
4484 yyerror("allow-opts can only be specified for pass rules");
4485 problems++;
4486 }
4487 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
4488 r->dst.port_op || r->flagset || r->type || r->code)) {
4489 yyerror("fragments can be filtered only on IP header fields");
4490 problems++;
4491 }
4492 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
4493 yyerror("return-rst can only be applied to TCP rules");
4494 problems++;
4495 }
4496 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
4497 yyerror("max-src-nodes requires 'source-track rule'");
4498 problems++;
4499 }
4500 if (r->action == PF_DROP && r->keep_state) {
4501 yyerror("keep state on block rules doesn't make sense");
4502 problems++;
4503 }
4504 if (r->rule_flag & PFRULE_STATESLOPPY &&
4505 (r->keep_state == PF_STATE_MODULATE ||
4506 r->keep_state == PF_STATE_SYNPROXY)) {
4507 yyerror("sloppy state matching cannot be used with "
4508 "synproxy state or modulate state");
4509 problems++;
4510 }
4511 return (-problems);
4512}
4513
4514int
4515nat_consistent(struct pf_rule *r)
4516{
4517 return (0); /* yeah! */
4518}
4519
4520int
4521rdr_consistent(struct pf_rule *r)
4522{
4523 int problems = 0;
4524
4525 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
4526 if (r->src.port_op) {
4527 yyerror("src port only applies to tcp/udp");
4528 problems++;
4529 }
4530 if (r->dst.port_op) {
4531 yyerror("dst port only applies to tcp/udp");
4532 problems++;
4533 }
4534 if (r->rpool.proxy_port[0]) {
4535 yyerror("rpool port only applies to tcp/udp");
4536 problems++;
4537 }
4538 }
4539 if (r->dst.port_op &&
4540 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
4541 yyerror("invalid port operator for rdr destination port");
4542 problems++;
4543 }
4544 return (-problems);
4545}
4546
4547int
4548process_tabledef(char *name, struct table_opts *opts)
4549{
4550 struct pfr_buffer ab;
4551 struct node_tinit *ti;
4552
4553 bzero(&ab, sizeof(ab));
4554 ab.pfrb_type = PFRB_ADDRS;
4555 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
4556 if (ti->file)
4557 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
4558 if (errno)
4559 yyerror("cannot load \"%s\": %s",
4560 ti->file, strerror(errno));
4561 else
4562 yyerror("file \"%s\" contains bad data",
4563 ti->file);
4564 goto _error;
4565 }
4566 if (ti->host)
4567 if (append_addr_host(&ab, ti->host, 0, 0)) {
4568 yyerror("cannot create address buffer: %s",
4569 strerror(errno));
4570 goto _error;
4571 }
4572 }
4573 if (pf->opts & PF_OPT_VERBOSE)
4574 print_tabledef(name, opts->flags, opts->init_addr,
4575 &opts->init_nodes);
4576 if (!(pf->opts & PF_OPT_NOACTION) &&
4577 pfctl_define_table(name, opts->flags, opts->init_addr,
4578 pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
4579 yyerror("cannot define table %s: %s", name,
4580 pfr_strerror(errno));
4581 goto _error;
4582 }
4583 pf->tdirty = 1;
4584 pfr_buf_clear(&ab);
4585 return (0);
4586_error:
4587 pfr_buf_clear(&ab);
4588 return (-1);
4589}
4590
4591struct keywords {
4592 const char *k_name;
4593 int k_val;
4594};
4595
4596/* macro gore, but you should've seen the prior indentation nightmare... */
4597
4598#define FREE_LIST(T,r) \
4599 do { \
4600 T *p, *node = r; \
4601 while (node != NULL) { \
4602 p = node; \
4603 node = node->next; \
4604 free(p); \
4605 } \
4606 } while (0)
4607
4608#define LOOP_THROUGH(T,n,r,C) \
4609 do { \
4610 T *n; \
4611 if (r == NULL) { \
4612 r = calloc(1, sizeof(T)); \
4613 if (r == NULL) \
4614 err(1, "LOOP: calloc"); \
4615 r->next = NULL; \
4616 } \
4617 n = r; \
4618 while (n != NULL) { \
4619 do { \
4620 C; \
4621 } while (0); \
4622 n = n->next; \
4623 } \
4624 } while (0)
4625
4626void
4627expand_label_str(char *label, size_t len, const char *srch, const char *repl)
4628{
4629 char *tmp;
4630 char *p, *q;
4631
4632 if ((tmp = calloc(1, len)) == NULL)
4633 err(1, "expand_label_str: calloc");
4634 p = q = label;
4635 while ((q = strstr(p, srch)) != NULL) {
4636 *q = '\0';
4637 if ((strlcat(tmp, p, len) >= len) ||
4638 (strlcat(tmp, repl, len) >= len))
4639 errx(1, "expand_label: label too long");
4640 q += strlen(srch);
4641 p = q;
4642 }
4643 if (strlcat(tmp, p, len) >= len)
4644 errx(1, "expand_label: label too long");
4645 strlcpy(label, tmp, len); /* always fits */
4646 free(tmp);
4647}
4648
4649void
4650expand_label_if(const char *name, char *label, size_t len, const char *ifname)
4651{
4652 if (strstr(label, name) != NULL) {
4653 if (!*ifname)
4654 expand_label_str(label, len, name, "any");
4655 else
4656 expand_label_str(label, len, name, ifname);
4657 }
4658}
4659
4660void
4661expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
4662 struct node_host *h)
4663{
4664 char tmp[64], tmp_not[66];
4665
4666 if (strstr(label, name) != NULL) {
4667 switch (h->addr.type) {
4668 case PF_ADDR_DYNIFTL:
4669 snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
4670 break;
4671 case PF_ADDR_TABLE:
4672 snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
4673 break;
4674 case PF_ADDR_NOROUTE:
4675 snprintf(tmp, sizeof(tmp), "no-route");
4676 break;
4677 case PF_ADDR_URPFFAILED:
4678 snprintf(tmp, sizeof(tmp), "urpf-failed");
4679 break;
4680 case PF_ADDR_ADDRMASK:
4681 if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
4682 PF_AZERO(&h->addr.v.a.mask, af)))
4683 snprintf(tmp, sizeof(tmp), "any");
4684 else {
4685 char a[48];
4686 int bits;
4687
4688 if (inet_ntop(af, &h->addr.v.a.addr, a,
4689 sizeof(a)) == NULL)
4690 snprintf(tmp, sizeof(tmp), "?");
4691 else {
4692 bits = unmask(&h->addr.v.a.mask, af);
4693 if ((af == AF_INET && bits < 32) ||
4694 (af == AF_INET6 && bits < 128))
4695 snprintf(tmp, sizeof(tmp),
4696 "%s/%d", a, bits);
4697 else
4698 snprintf(tmp, sizeof(tmp),
4699 "%s", a);
4700 }
4701 }
4702 break;
4703 default:
4704 snprintf(tmp, sizeof(tmp), "?");
4705 break;
4706 }
4707
4708 if (h->not) {
4709 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
4710 expand_label_str(label, len, name, tmp_not);
4711 } else
4712 expand_label_str(label, len, name, tmp);
4713 }
4714}
4715
4716void
4717expand_label_port(const char *name, char *label, size_t len,
4718 struct node_port *port)
4719{
4720 char a1[6], a2[6], op[13] = "";
4721
4722 if (strstr(label, name) != NULL) {
4723 snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
4724 snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
4725 if (!port->op)
4726 ;
4727 else if (port->op == PF_OP_IRG)
4728 snprintf(op, sizeof(op), "%s><%s", a1, a2);
4729 else if (port->op == PF_OP_XRG)
4730 snprintf(op, sizeof(op), "%s<>%s", a1, a2);
4731 else if (port->op == PF_OP_EQ)
4732 snprintf(op, sizeof(op), "%s", a1);
4733 else if (port->op == PF_OP_NE)
4734 snprintf(op, sizeof(op), "!=%s", a1);
4735 else if (port->op == PF_OP_LT)
4736 snprintf(op, sizeof(op), "<%s", a1);
4737 else if (port->op == PF_OP_LE)
4738 snprintf(op, sizeof(op), "<=%s", a1);
4739 else if (port->op == PF_OP_GT)
4740 snprintf(op, sizeof(op), ">%s", a1);
4741 else if (port->op == PF_OP_GE)
4742 snprintf(op, sizeof(op), ">=%s", a1);
4743 expand_label_str(label, len, name, op);
4744 }
4745}
4746
4747void
4748expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
4749{
4750 struct protoent *pe;
4751 char n[4];
4752
4753 if (strstr(label, name) != NULL) {
4754 pe = getprotobynumber(proto);
4755 if (pe != NULL)
4756 expand_label_str(label, len, name, pe->p_name);
4757 else {
4758 snprintf(n, sizeof(n), "%u", proto);
4759 expand_label_str(label, len, name, n);
4760 }
4761 }
4762}
4763
4764void
4765expand_label_nr(const char *name, char *label, size_t len)
4766{
4767 char n[11];
4768
4769 if (strstr(label, name) != NULL) {
4770 snprintf(n, sizeof(n), "%u", pf->anchor->match);
4771 expand_label_str(label, len, name, n);
4772 }
4773}
4774
4775void
4776expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
4777 struct node_host *src_host, struct node_port *src_port,
4778 struct node_host *dst_host, struct node_port *dst_port,
4779 u_int8_t proto)
4780{
4781 expand_label_if("$if", label, len, ifname);
4782 expand_label_addr("$srcaddr", label, len, af, src_host);
4783 expand_label_addr("$dstaddr", label, len, af, dst_host);
4784 expand_label_port("$srcport", label, len, src_port);
4785 expand_label_port("$dstport", label, len, dst_port);
4786 expand_label_proto("$proto", label, len, proto);
4787 expand_label_nr("$nr", label, len);
4788}
4789
4790int
4791expand_altq(struct pf_altq *a, struct node_if *interfaces,
4792 struct node_queue *nqueues, struct node_queue_bw bwspec,
4793 struct node_queue_opt *opts)
4794{
4795 struct pf_altq pa, pb;
4796 char qname[PF_QNAME_SIZE];
4797 struct node_queue *n;
4798 struct node_queue_bw bw;
4799 int errs = 0;
4800
4801 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4802 FREE_LIST(struct node_if, interfaces);
| 1937qassign : /* empty */ { $$ = NULL; }
1938 | qassign_item { $$ = $1; }
1939 | '{' optnl qassign_list '}' { $$ = $3; }
1940 ;
1941
1942qassign_list : qassign_item optnl { $$ = $1; }
1943 | qassign_list comma qassign_item optnl {
1944 $1->tail->next = $3;
1945 $1->tail = $3;
1946 $$ = $1;
1947 }
1948 ;
1949
1950qassign_item : STRING {
1951 $$ = calloc(1, sizeof(struct node_queue));
1952 if ($$ == NULL)
1953 err(1, "qassign_item: calloc");
1954 if (strlcpy($$->queue, $1, sizeof($$->queue)) >=
1955 sizeof($$->queue)) {
1956 yyerror("queue name '%s' too long (max "
1957 "%d chars)", $1, sizeof($$->queue)-1);
1958 free($1);
1959 free($$);
1960 YYERROR;
1961 }
1962 free($1);
1963 $$->next = NULL;
1964 $$->tail = $$;
1965 }
1966 ;
1967
1968pfrule : action dir logquick interface route af proto fromto
1969 filter_opts
1970 {
1971 struct pf_rule r;
1972 struct node_state_opt *o;
1973 struct node_proto *proto;
1974 int srctrack = 0;
1975 int statelock = 0;
1976 int adaptive = 0;
1977 int defaults = 0;
1978
1979 if (check_rulestate(PFCTL_STATE_FILTER))
1980 YYERROR;
1981
1982 memset(&r, 0, sizeof(r));
1983
1984 r.action = $1.b1;
1985 switch ($1.b2) {
1986 case PFRULE_RETURNRST:
1987 r.rule_flag |= PFRULE_RETURNRST;
1988 r.return_ttl = $1.w;
1989 break;
1990 case PFRULE_RETURNICMP:
1991 r.rule_flag |= PFRULE_RETURNICMP;
1992 r.return_icmp = $1.w;
1993 r.return_icmp6 = $1.w2;
1994 break;
1995 case PFRULE_RETURN:
1996 r.rule_flag |= PFRULE_RETURN;
1997 r.return_icmp = $1.w;
1998 r.return_icmp6 = $1.w2;
1999 break;
2000 }
2001 r.direction = $2;
2002 r.log = $3.log;
2003 r.logif = $3.logif;
2004 r.quick = $3.quick;
2005 r.prob = $9.prob;
2006 r.rtableid = $9.rtableid;
2007
2008 r.af = $6;
2009 if ($9.tag)
2010 if (strlcpy(r.tagname, $9.tag,
2011 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2012 yyerror("tag too long, max %u chars",
2013 PF_TAG_NAME_SIZE - 1);
2014 YYERROR;
2015 }
2016 if ($9.match_tag)
2017 if (strlcpy(r.match_tagname, $9.match_tag,
2018 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
2019 yyerror("tag too long, max %u chars",
2020 PF_TAG_NAME_SIZE - 1);
2021 YYERROR;
2022 }
2023 r.match_tag_not = $9.match_tag_not;
2024 if (rule_label(&r, $9.label))
2025 YYERROR;
2026 free($9.label);
2027 r.flags = $9.flags.b1;
2028 r.flagset = $9.flags.b2;
2029 if (($9.flags.b1 & $9.flags.b2) != $9.flags.b1) {
2030 yyerror("flags always false");
2031 YYERROR;
2032 }
2033 if ($9.flags.b1 || $9.flags.b2 || $8.src_os) {
2034 for (proto = $7; proto != NULL &&
2035 proto->proto != IPPROTO_TCP;
2036 proto = proto->next)
2037 ; /* nothing */
2038 if (proto == NULL && $7 != NULL) {
2039 if ($9.flags.b1 || $9.flags.b2)
2040 yyerror(
2041 "flags only apply to tcp");
2042 if ($8.src_os)
2043 yyerror(
2044 "OS fingerprinting only "
2045 "apply to tcp");
2046 YYERROR;
2047 }
2048#if 0
2049 if (($9.flags.b1 & parse_flags("S")) == 0 &&
2050 $8.src_os) {
2051 yyerror("OS fingerprinting requires "
2052 "the SYN TCP flag (flags S/SA)");
2053 YYERROR;
2054 }
2055#endif
2056 }
2057
2058 r.tos = $9.tos;
2059 r.keep_state = $9.keep.action;
2060 o = $9.keep.options;
2061
2062 /* 'keep state' by default on pass rules. */
2063 if (!r.keep_state && !r.action &&
2064 !($9.marker & FOM_KEEP)) {
2065 r.keep_state = PF_STATE_NORMAL;
2066 o = keep_state_defaults;
2067 defaults = 1;
2068 }
2069
2070 while (o) {
2071 struct node_state_opt *p = o;
2072
2073 switch (o->type) {
2074 case PF_STATE_OPT_MAX:
2075 if (r.max_states) {
2076 yyerror("state option 'max' "
2077 "multiple definitions");
2078 YYERROR;
2079 }
2080 r.max_states = o->data.max_states;
2081 break;
2082 case PF_STATE_OPT_NOSYNC:
2083 if (r.rule_flag & PFRULE_NOSYNC) {
2084 yyerror("state option 'sync' "
2085 "multiple definitions");
2086 YYERROR;
2087 }
2088 r.rule_flag |= PFRULE_NOSYNC;
2089 break;
2090 case PF_STATE_OPT_SRCTRACK:
2091 if (srctrack) {
2092 yyerror("state option "
2093 "'source-track' "
2094 "multiple definitions");
2095 YYERROR;
2096 }
2097 srctrack = o->data.src_track;
2098 r.rule_flag |= PFRULE_SRCTRACK;
2099 break;
2100 case PF_STATE_OPT_MAX_SRC_STATES:
2101 if (r.max_src_states) {
2102 yyerror("state option "
2103 "'max-src-states' "
2104 "multiple definitions");
2105 YYERROR;
2106 }
2107 if (o->data.max_src_states == 0) {
2108 yyerror("'max-src-states' must "
2109 "be > 0");
2110 YYERROR;
2111 }
2112 r.max_src_states =
2113 o->data.max_src_states;
2114 r.rule_flag |= PFRULE_SRCTRACK;
2115 break;
2116 case PF_STATE_OPT_OVERLOAD:
2117 if (r.overload_tblname[0]) {
2118 yyerror("multiple 'overload' "
2119 "table definitions");
2120 YYERROR;
2121 }
2122 if (strlcpy(r.overload_tblname,
2123 o->data.overload.tblname,
2124 PF_TABLE_NAME_SIZE) >=
2125 PF_TABLE_NAME_SIZE) {
2126 yyerror("state option: "
2127 "strlcpy");
2128 YYERROR;
2129 }
2130 r.flush = o->data.overload.flush;
2131 break;
2132 case PF_STATE_OPT_MAX_SRC_CONN:
2133 if (r.max_src_conn) {
2134 yyerror("state option "
2135 "'max-src-conn' "
2136 "multiple definitions");
2137 YYERROR;
2138 }
2139 if (o->data.max_src_conn == 0) {
2140 yyerror("'max-src-conn' "
2141 "must be > 0");
2142 YYERROR;
2143 }
2144 r.max_src_conn =
2145 o->data.max_src_conn;
2146 r.rule_flag |= PFRULE_SRCTRACK |
2147 PFRULE_RULESRCTRACK;
2148 break;
2149 case PF_STATE_OPT_MAX_SRC_CONN_RATE:
2150 if (r.max_src_conn_rate.limit) {
2151 yyerror("state option "
2152 "'max-src-conn-rate' "
2153 "multiple definitions");
2154 YYERROR;
2155 }
2156 if (!o->data.max_src_conn_rate.limit ||
2157 !o->data.max_src_conn_rate.seconds) {
2158 yyerror("'max-src-conn-rate' "
2159 "values must be > 0");
2160 YYERROR;
2161 }
2162 if (o->data.max_src_conn_rate.limit >
2163 PF_THRESHOLD_MAX) {
2164 yyerror("'max-src-conn-rate' "
2165 "maximum rate must be < %u",
2166 PF_THRESHOLD_MAX);
2167 YYERROR;
2168 }
2169 r.max_src_conn_rate.limit =
2170 o->data.max_src_conn_rate.limit;
2171 r.max_src_conn_rate.seconds =
2172 o->data.max_src_conn_rate.seconds;
2173 r.rule_flag |= PFRULE_SRCTRACK |
2174 PFRULE_RULESRCTRACK;
2175 break;
2176 case PF_STATE_OPT_MAX_SRC_NODES:
2177 if (r.max_src_nodes) {
2178 yyerror("state option "
2179 "'max-src-nodes' "
2180 "multiple definitions");
2181 YYERROR;
2182 }
2183 if (o->data.max_src_nodes == 0) {
2184 yyerror("'max-src-nodes' must "
2185 "be > 0");
2186 YYERROR;
2187 }
2188 r.max_src_nodes =
2189 o->data.max_src_nodes;
2190 r.rule_flag |= PFRULE_SRCTRACK |
2191 PFRULE_RULESRCTRACK;
2192 break;
2193 case PF_STATE_OPT_STATELOCK:
2194 if (statelock) {
2195 yyerror("state locking option: "
2196 "multiple definitions");
2197 YYERROR;
2198 }
2199 statelock = 1;
2200 r.rule_flag |= o->data.statelock;
2201 break;
2202 case PF_STATE_OPT_SLOPPY:
2203 if (r.rule_flag & PFRULE_STATESLOPPY) {
2204 yyerror("state sloppy option: "
2205 "multiple definitions");
2206 YYERROR;
2207 }
2208 r.rule_flag |= PFRULE_STATESLOPPY;
2209 break;
2210 case PF_STATE_OPT_TIMEOUT:
2211 if (o->data.timeout.number ==
2212 PFTM_ADAPTIVE_START ||
2213 o->data.timeout.number ==
2214 PFTM_ADAPTIVE_END)
2215 adaptive = 1;
2216 if (r.timeout[o->data.timeout.number]) {
2217 yyerror("state timeout %s "
2218 "multiple definitions",
2219 pf_timeouts[o->data.
2220 timeout.number].name);
2221 YYERROR;
2222 }
2223 r.timeout[o->data.timeout.number] =
2224 o->data.timeout.seconds;
2225 }
2226 o = o->next;
2227 if (!defaults)
2228 free(p);
2229 }
2230
2231 /* 'flags S/SA' by default on stateful rules */
2232 if (!r.action && !r.flags && !r.flagset &&
2233 !$9.fragment && !($9.marker & FOM_FLAGS) &&
2234 r.keep_state) {
2235 r.flags = parse_flags("S");
2236 r.flagset = parse_flags("SA");
2237 }
2238 if (!adaptive && r.max_states) {
2239 r.timeout[PFTM_ADAPTIVE_START] =
2240 (r.max_states / 10) * 6;
2241 r.timeout[PFTM_ADAPTIVE_END] =
2242 (r.max_states / 10) * 12;
2243 }
2244 if (r.rule_flag & PFRULE_SRCTRACK) {
2245 if (srctrack == PF_SRCTRACK_GLOBAL &&
2246 r.max_src_nodes) {
2247 yyerror("'max-src-nodes' is "
2248 "incompatible with "
2249 "'source-track global'");
2250 YYERROR;
2251 }
2252 if (srctrack == PF_SRCTRACK_GLOBAL &&
2253 r.max_src_conn) {
2254 yyerror("'max-src-conn' is "
2255 "incompatible with "
2256 "'source-track global'");
2257 YYERROR;
2258 }
2259 if (srctrack == PF_SRCTRACK_GLOBAL &&
2260 r.max_src_conn_rate.seconds) {
2261 yyerror("'max-src-conn-rate' is "
2262 "incompatible with "
2263 "'source-track global'");
2264 YYERROR;
2265 }
2266 if (r.timeout[PFTM_SRC_NODE] <
2267 r.max_src_conn_rate.seconds)
2268 r.timeout[PFTM_SRC_NODE] =
2269 r.max_src_conn_rate.seconds;
2270 r.rule_flag |= PFRULE_SRCTRACK;
2271 if (srctrack == PF_SRCTRACK_RULE)
2272 r.rule_flag |= PFRULE_RULESRCTRACK;
2273 }
2274 if (r.keep_state && !statelock)
2275 r.rule_flag |= default_statelock;
2276
2277 if ($9.fragment)
2278 r.rule_flag |= PFRULE_FRAGMENT;
2279 r.allow_opts = $9.allowopts;
2280
2281 decide_address_family($8.src.host, &r.af);
2282 decide_address_family($8.dst.host, &r.af);
2283
2284 if ($5.rt) {
2285 if (!r.direction) {
2286 yyerror("direction must be explicit "
2287 "with rules that specify routing");
2288 YYERROR;
2289 }
2290 r.rt = $5.rt;
2291 r.rpool.opts = $5.pool_opts;
2292 if ($5.key != NULL)
2293 memcpy(&r.rpool.key, $5.key,
2294 sizeof(struct pf_poolhashkey));
2295 }
2296 if (r.rt && r.rt != PF_FASTROUTE) {
2297 decide_address_family($5.host, &r.af);
2298 remove_invalid_hosts(&$5.host, &r.af);
2299 if ($5.host == NULL) {
2300 yyerror("no routing address with "
2301 "matching address family found.");
2302 YYERROR;
2303 }
2304 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
2305 PF_POOL_NONE && ($5.host->next != NULL ||
2306 $5.host->addr.type == PF_ADDR_TABLE ||
2307 DYNIF_MULTIADDR($5.host->addr)))
2308 r.rpool.opts |= PF_POOL_ROUNDROBIN;
2309 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2310 PF_POOL_ROUNDROBIN &&
2311 disallow_table($5.host, "tables are only "
2312 "supported in round-robin routing pools"))
2313 YYERROR;
2314 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2315 PF_POOL_ROUNDROBIN &&
2316 disallow_alias($5.host, "interface (%s) "
2317 "is only supported in round-robin "
2318 "routing pools"))
2319 YYERROR;
2320 if ($5.host->next != NULL) {
2321 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
2322 PF_POOL_ROUNDROBIN) {
2323 yyerror("r.rpool.opts must "
2324 "be PF_POOL_ROUNDROBIN");
2325 YYERROR;
2326 }
2327 }
2328 }
2329 if ($9.queues.qname != NULL) {
2330 if (strlcpy(r.qname, $9.queues.qname,
2331 sizeof(r.qname)) >= sizeof(r.qname)) {
2332 yyerror("rule qname too long (max "
2333 "%d chars)", sizeof(r.qname)-1);
2334 YYERROR;
2335 }
2336 free($9.queues.qname);
2337 }
2338 if ($9.queues.pqname != NULL) {
2339 if (strlcpy(r.pqname, $9.queues.pqname,
2340 sizeof(r.pqname)) >= sizeof(r.pqname)) {
2341 yyerror("rule pqname too long (max "
2342 "%d chars)", sizeof(r.pqname)-1);
2343 YYERROR;
2344 }
2345 free($9.queues.pqname);
2346 }
2347#ifdef __FreeBSD__
2348 r.divert.port = $9.divert.port;
2349#else
2350 if ((r.divert.port = $9.divert.port)) {
2351 if (r.direction == PF_OUT) {
2352 if ($9.divert.addr) {
2353 yyerror("address specified "
2354 "for outgoing divert");
2355 YYERROR;
2356 }
2357 bzero(&r.divert.addr,
2358 sizeof(r.divert.addr));
2359 } else {
2360 if (!$9.divert.addr) {
2361 yyerror("no address specified "
2362 "for incoming divert");
2363 YYERROR;
2364 }
2365 if ($9.divert.addr->af != r.af) {
2366 yyerror("address family "
2367 "mismatch for divert");
2368 YYERROR;
2369 }
2370 r.divert.addr =
2371 $9.divert.addr->addr.v.a.addr;
2372 }
2373 }
2374#endif
2375
2376 expand_rule(&r, $4, $5.host, $7, $8.src_os,
2377 $8.src.host, $8.src.port, $8.dst.host, $8.dst.port,
2378 $9.uid, $9.gid, $9.icmpspec, "");
2379 }
2380 ;
2381
2382filter_opts : {
2383 bzero(&filter_opts, sizeof filter_opts);
2384 filter_opts.rtableid = -1;
2385 }
2386 filter_opts_l
2387 { $$ = filter_opts; }
2388 | /* empty */ {
2389 bzero(&filter_opts, sizeof filter_opts);
2390 filter_opts.rtableid = -1;
2391 $$ = filter_opts;
2392 }
2393 ;
2394
2395filter_opts_l : filter_opts_l filter_opt
2396 | filter_opt
2397 ;
2398
2399filter_opt : USER uids {
2400 if (filter_opts.uid)
2401 $2->tail->next = filter_opts.uid;
2402 filter_opts.uid = $2;
2403 }
2404 | GROUP gids {
2405 if (filter_opts.gid)
2406 $2->tail->next = filter_opts.gid;
2407 filter_opts.gid = $2;
2408 }
2409 | flags {
2410 if (filter_opts.marker & FOM_FLAGS) {
2411 yyerror("flags cannot be redefined");
2412 YYERROR;
2413 }
2414 filter_opts.marker |= FOM_FLAGS;
2415 filter_opts.flags.b1 |= $1.b1;
2416 filter_opts.flags.b2 |= $1.b2;
2417 filter_opts.flags.w |= $1.w;
2418 filter_opts.flags.w2 |= $1.w2;
2419 }
2420 | icmpspec {
2421 if (filter_opts.marker & FOM_ICMP) {
2422 yyerror("icmp-type cannot be redefined");
2423 YYERROR;
2424 }
2425 filter_opts.marker |= FOM_ICMP;
2426 filter_opts.icmpspec = $1;
2427 }
2428 | TOS tos {
2429 if (filter_opts.marker & FOM_TOS) {
2430 yyerror("tos cannot be redefined");
2431 YYERROR;
2432 }
2433 filter_opts.marker |= FOM_TOS;
2434 filter_opts.tos = $2;
2435 }
2436 | keep {
2437 if (filter_opts.marker & FOM_KEEP) {
2438 yyerror("modulate or keep cannot be redefined");
2439 YYERROR;
2440 }
2441 filter_opts.marker |= FOM_KEEP;
2442 filter_opts.keep.action = $1.action;
2443 filter_opts.keep.options = $1.options;
2444 }
2445 | FRAGMENT {
2446 filter_opts.fragment = 1;
2447 }
2448 | ALLOWOPTS {
2449 filter_opts.allowopts = 1;
2450 }
2451 | label {
2452 if (filter_opts.label) {
2453 yyerror("label cannot be redefined");
2454 YYERROR;
2455 }
2456 filter_opts.label = $1;
2457 }
2458 | qname {
2459 if (filter_opts.queues.qname) {
2460 yyerror("queue cannot be redefined");
2461 YYERROR;
2462 }
2463 filter_opts.queues = $1;
2464 }
2465 | TAG string {
2466 filter_opts.tag = $2;
2467 }
2468 | not TAGGED string {
2469 filter_opts.match_tag = $3;
2470 filter_opts.match_tag_not = $1;
2471 }
2472 | PROBABILITY probability {
2473 double p;
2474
2475 p = floor($2 * UINT_MAX + 0.5);
2476 if (p < 0.0 || p > UINT_MAX) {
2477 yyerror("invalid probability: %lf", p);
2478 YYERROR;
2479 }
2480 filter_opts.prob = (u_int32_t)p;
2481 if (filter_opts.prob == 0)
2482 filter_opts.prob = 1;
2483 }
2484 | RTABLE NUMBER {
2485 if ($2 < 0 || $2 > rt_tableid_max()) {
2486 yyerror("invalid rtable id");
2487 YYERROR;
2488 }
2489 filter_opts.rtableid = $2;
2490 }
2491 | DIVERTTO portplain {
2492#ifdef __FreeBSD__
2493 filter_opts.divert.port = $2.a;
2494 if (!filter_opts.divert.port) {
2495 yyerror("invalid divert port: %u", ntohs($2.a));
2496 YYERROR;
2497 }
2498#endif
2499 }
2500 | DIVERTTO STRING PORT portplain {
2501#ifndef __FreeBSD__
2502 if ((filter_opts.divert.addr = host($2)) == NULL) {
2503 yyerror("could not parse divert address: %s",
2504 $2);
2505 free($2);
2506 YYERROR;
2507 }
2508#else
2509 if ($2)
2510#endif
2511 free($2);
2512 filter_opts.divert.port = $4.a;
2513 if (!filter_opts.divert.port) {
2514 yyerror("invalid divert port: %u", ntohs($4.a));
2515 YYERROR;
2516 }
2517 }
2518 | DIVERTREPLY {
2519#ifdef __FreeBSD__
2520 yyerror("divert-reply has no meaning in FreeBSD pf(4)");
2521 YYERROR;
2522#else
2523 filter_opts.divert.port = 1; /* some random value */
2524#endif
2525 }
2526 ;
2527
2528probability : STRING {
2529 char *e;
2530 double p = strtod($1, &e);
2531
2532 if (*e == '%') {
2533 p *= 0.01;
2534 e++;
2535 }
2536 if (*e) {
2537 yyerror("invalid probability: %s", $1);
2538 free($1);
2539 YYERROR;
2540 }
2541 free($1);
2542 $$ = p;
2543 }
2544 | NUMBER {
2545 $$ = (double)$1;
2546 }
2547 ;
2548
2549
2550action : PASS { $$.b1 = PF_PASS; $$.b2 = $$.w = 0; }
2551 | BLOCK blockspec { $$ = $2; $$.b1 = PF_DROP; }
2552 ;
2553
2554blockspec : /* empty */ {
2555 $$.b2 = blockpolicy;
2556 $$.w = returnicmpdefault;
2557 $$.w2 = returnicmp6default;
2558 }
2559 | DROP {
2560 $$.b2 = PFRULE_DROP;
2561 $$.w = 0;
2562 $$.w2 = 0;
2563 }
2564 | RETURNRST {
2565 $$.b2 = PFRULE_RETURNRST;
2566 $$.w = 0;
2567 $$.w2 = 0;
2568 }
2569 | RETURNRST '(' TTL NUMBER ')' {
2570 if ($4 < 0 || $4 > 255) {
2571 yyerror("illegal ttl value %d", $4);
2572 YYERROR;
2573 }
2574 $$.b2 = PFRULE_RETURNRST;
2575 $$.w = $4;
2576 $$.w2 = 0;
2577 }
2578 | RETURNICMP {
2579 $$.b2 = PFRULE_RETURNICMP;
2580 $$.w = returnicmpdefault;
2581 $$.w2 = returnicmp6default;
2582 }
2583 | RETURNICMP6 {
2584 $$.b2 = PFRULE_RETURNICMP;
2585 $$.w = returnicmpdefault;
2586 $$.w2 = returnicmp6default;
2587 }
2588 | RETURNICMP '(' reticmpspec ')' {
2589 $$.b2 = PFRULE_RETURNICMP;
2590 $$.w = $3;
2591 $$.w2 = returnicmpdefault;
2592 }
2593 | RETURNICMP6 '(' reticmp6spec ')' {
2594 $$.b2 = PFRULE_RETURNICMP;
2595 $$.w = returnicmpdefault;
2596 $$.w2 = $3;
2597 }
2598 | RETURNICMP '(' reticmpspec comma reticmp6spec ')' {
2599 $$.b2 = PFRULE_RETURNICMP;
2600 $$.w = $3;
2601 $$.w2 = $5;
2602 }
2603 | RETURN {
2604 $$.b2 = PFRULE_RETURN;
2605 $$.w = returnicmpdefault;
2606 $$.w2 = returnicmp6default;
2607 }
2608 ;
2609
2610reticmpspec : STRING {
2611 if (!($$ = parseicmpspec($1, AF_INET))) {
2612 free($1);
2613 YYERROR;
2614 }
2615 free($1);
2616 }
2617 | NUMBER {
2618 u_int8_t icmptype;
2619
2620 if ($1 < 0 || $1 > 255) {
2621 yyerror("invalid icmp code %lu", $1);
2622 YYERROR;
2623 }
2624 icmptype = returnicmpdefault >> 8;
2625 $$ = (icmptype << 8 | $1);
2626 }
2627 ;
2628
2629reticmp6spec : STRING {
2630 if (!($$ = parseicmpspec($1, AF_INET6))) {
2631 free($1);
2632 YYERROR;
2633 }
2634 free($1);
2635 }
2636 | NUMBER {
2637 u_int8_t icmptype;
2638
2639 if ($1 < 0 || $1 > 255) {
2640 yyerror("invalid icmp code %lu", $1);
2641 YYERROR;
2642 }
2643 icmptype = returnicmp6default >> 8;
2644 $$ = (icmptype << 8 | $1);
2645 }
2646 ;
2647
2648dir : /* empty */ { $$ = PF_INOUT; }
2649 | IN { $$ = PF_IN; }
2650 | OUT { $$ = PF_OUT; }
2651 ;
2652
2653quick : /* empty */ { $$.quick = 0; }
2654 | QUICK { $$.quick = 1; }
2655 ;
2656
2657logquick : /* empty */ { $$.log = 0; $$.quick = 0; $$.logif = 0; }
2658 | log { $$ = $1; $$.quick = 0; }
2659 | QUICK { $$.quick = 1; $$.log = 0; $$.logif = 0; }
2660 | log QUICK { $$ = $1; $$.quick = 1; }
2661 | QUICK log { $$ = $2; $$.quick = 1; }
2662 ;
2663
2664log : LOG { $$.log = PF_LOG; $$.logif = 0; }
2665 | LOG '(' logopts ')' {
2666 $$.log = PF_LOG | $3.log;
2667 $$.logif = $3.logif;
2668 }
2669 ;
2670
2671logopts : logopt { $$ = $1; }
2672 | logopts comma logopt {
2673 $$.log = $1.log | $3.log;
2674 $$.logif = $3.logif;
2675 if ($$.logif == 0)
2676 $$.logif = $1.logif;
2677 }
2678 ;
2679
2680logopt : ALL { $$.log = PF_LOG_ALL; $$.logif = 0; }
2681 | USER { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2682 | GROUP { $$.log = PF_LOG_SOCKET_LOOKUP; $$.logif = 0; }
2683 | TO string {
2684 const char *errstr;
2685 u_int i;
2686
2687 $$.log = 0;
2688 if (strncmp($2, "pflog", 5)) {
2689 yyerror("%s: should be a pflog interface", $2);
2690 free($2);
2691 YYERROR;
2692 }
2693 i = strtonum($2 + 5, 0, 255, &errstr);
2694 if (errstr) {
2695 yyerror("%s: %s", $2, errstr);
2696 free($2);
2697 YYERROR;
2698 }
2699 free($2);
2700 $$.logif = i;
2701 }
2702 ;
2703
2704interface : /* empty */ { $$ = NULL; }
2705 | ON if_item_not { $$ = $2; }
2706 | ON '{' optnl if_list '}' { $$ = $4; }
2707 ;
2708
2709if_list : if_item_not optnl { $$ = $1; }
2710 | if_list comma if_item_not optnl {
2711 $1->tail->next = $3;
2712 $1->tail = $3;
2713 $$ = $1;
2714 }
2715 ;
2716
2717if_item_not : not if_item { $$ = $2; $$->not = $1; }
2718 ;
2719
2720if_item : STRING {
2721 struct node_host *n;
2722
2723 $$ = calloc(1, sizeof(struct node_if));
2724 if ($$ == NULL)
2725 err(1, "if_item: calloc");
2726 if (strlcpy($$->ifname, $1, sizeof($$->ifname)) >=
2727 sizeof($$->ifname)) {
2728 free($1);
2729 free($$);
2730 yyerror("interface name too long");
2731 YYERROR;
2732 }
2733
2734 if ((n = ifa_exists($1)) != NULL)
2735 $$->ifa_flags = n->ifa_flags;
2736
2737 free($1);
2738 $$->not = 0;
2739 $$->next = NULL;
2740 $$->tail = $$;
2741 }
2742 ;
2743
2744af : /* empty */ { $$ = 0; }
2745 | INET { $$ = AF_INET; }
2746 | INET6 { $$ = AF_INET6; }
2747 ;
2748
2749proto : /* empty */ { $$ = NULL; }
2750 | PROTO proto_item { $$ = $2; }
2751 | PROTO '{' optnl proto_list '}' { $$ = $4; }
2752 ;
2753
2754proto_list : proto_item optnl { $$ = $1; }
2755 | proto_list comma proto_item optnl {
2756 $1->tail->next = $3;
2757 $1->tail = $3;
2758 $$ = $1;
2759 }
2760 ;
2761
2762proto_item : protoval {
2763 u_int8_t pr;
2764
2765 pr = (u_int8_t)$1;
2766 if (pr == 0) {
2767 yyerror("proto 0 cannot be used");
2768 YYERROR;
2769 }
2770 $$ = calloc(1, sizeof(struct node_proto));
2771 if ($$ == NULL)
2772 err(1, "proto_item: calloc");
2773 $$->proto = pr;
2774 $$->next = NULL;
2775 $$->tail = $$;
2776 }
2777 ;
2778
2779protoval : STRING {
2780 struct protoent *p;
2781
2782 p = getprotobyname($1);
2783 if (p == NULL) {
2784 yyerror("unknown protocol %s", $1);
2785 free($1);
2786 YYERROR;
2787 }
2788 $$ = p->p_proto;
2789 free($1);
2790 }
2791 | NUMBER {
2792 if ($1 < 0 || $1 > 255) {
2793 yyerror("protocol outside range");
2794 YYERROR;
2795 }
2796 }
2797 ;
2798
2799fromto : ALL {
2800 $$.src.host = NULL;
2801 $$.src.port = NULL;
2802 $$.dst.host = NULL;
2803 $$.dst.port = NULL;
2804 $$.src_os = NULL;
2805 }
2806 | from os to {
2807 $$.src = $1;
2808 $$.src_os = $2;
2809 $$.dst = $3;
2810 }
2811 ;
2812
2813os : /* empty */ { $$ = NULL; }
2814 | OS xos { $$ = $2; }
2815 | OS '{' optnl os_list '}' { $$ = $4; }
2816 ;
2817
2818xos : STRING {
2819 $$ = calloc(1, sizeof(struct node_os));
2820 if ($$ == NULL)
2821 err(1, "os: calloc");
2822 $$->os = $1;
2823 $$->tail = $$;
2824 }
2825 ;
2826
2827os_list : xos optnl { $$ = $1; }
2828 | os_list comma xos optnl {
2829 $1->tail->next = $3;
2830 $1->tail = $3;
2831 $$ = $1;
2832 }
2833 ;
2834
2835from : /* empty */ {
2836 $$.host = NULL;
2837 $$.port = NULL;
2838 }
2839 | FROM ipportspec {
2840 $$ = $2;
2841 }
2842 ;
2843
2844to : /* empty */ {
2845 $$.host = NULL;
2846 $$.port = NULL;
2847 }
2848 | TO ipportspec {
2849 if (disallow_urpf_failed($2.host, "\"urpf-failed\" is "
2850 "not permitted in a destination address"))
2851 YYERROR;
2852 $$ = $2;
2853 }
2854 ;
2855
2856ipportspec : ipspec {
2857 $$.host = $1;
2858 $$.port = NULL;
2859 }
2860 | ipspec PORT portspec {
2861 $$.host = $1;
2862 $$.port = $3;
2863 }
2864 | PORT portspec {
2865 $$.host = NULL;
2866 $$.port = $2;
2867 }
2868 ;
2869
2870optnl : '\n' optnl
2871 |
2872 ;
2873
2874ipspec : ANY { $$ = NULL; }
2875 | xhost { $$ = $1; }
2876 | '{' optnl host_list '}' { $$ = $3; }
2877 ;
2878
2879toipspec : TO ipspec { $$ = $2; }
2880 | /* empty */ { $$ = NULL; }
2881 ;
2882
2883host_list : ipspec optnl { $$ = $1; }
2884 | host_list comma ipspec optnl {
2885 if ($3 == NULL)
2886 $$ = $1;
2887 else if ($1 == NULL)
2888 $$ = $3;
2889 else {
2890 $1->tail->next = $3;
2891 $1->tail = $3->tail;
2892 $$ = $1;
2893 }
2894 }
2895 ;
2896
2897xhost : not host {
2898 struct node_host *n;
2899
2900 for (n = $2; n != NULL; n = n->next)
2901 n->not = $1;
2902 $$ = $2;
2903 }
2904 | not NOROUTE {
2905 $$ = calloc(1, sizeof(struct node_host));
2906 if ($$ == NULL)
2907 err(1, "xhost: calloc");
2908 $$->addr.type = PF_ADDR_NOROUTE;
2909 $$->next = NULL;
2910 $$->not = $1;
2911 $$->tail = $$;
2912 }
2913 | not URPFFAILED {
2914 $$ = calloc(1, sizeof(struct node_host));
2915 if ($$ == NULL)
2916 err(1, "xhost: calloc");
2917 $$->addr.type = PF_ADDR_URPFFAILED;
2918 $$->next = NULL;
2919 $$->not = $1;
2920 $$->tail = $$;
2921 }
2922 ;
2923
2924host : STRING {
2925 if (($$ = host($1)) == NULL) {
2926 /* error. "any" is handled elsewhere */
2927 free($1);
2928 yyerror("could not parse host specification");
2929 YYERROR;
2930 }
2931 free($1);
2932
2933 }
2934 | STRING '-' STRING {
2935 struct node_host *b, *e;
2936
2937 if ((b = host($1)) == NULL || (e = host($3)) == NULL) {
2938 free($1);
2939 free($3);
2940 yyerror("could not parse host specification");
2941 YYERROR;
2942 }
2943 if (b->af != e->af ||
2944 b->addr.type != PF_ADDR_ADDRMASK ||
2945 e->addr.type != PF_ADDR_ADDRMASK ||
2946 unmask(&b->addr.v.a.mask, b->af) !=
2947 (b->af == AF_INET ? 32 : 128) ||
2948 unmask(&e->addr.v.a.mask, e->af) !=
2949 (e->af == AF_INET ? 32 : 128) ||
2950 b->next != NULL || b->not ||
2951 e->next != NULL || e->not) {
2952 free(b);
2953 free(e);
2954 free($1);
2955 free($3);
2956 yyerror("invalid address range");
2957 YYERROR;
2958 }
2959 memcpy(&b->addr.v.a.mask, &e->addr.v.a.addr,
2960 sizeof(b->addr.v.a.mask));
2961 b->addr.type = PF_ADDR_RANGE;
2962 $$ = b;
2963 free(e);
2964 free($1);
2965 free($3);
2966 }
2967 | STRING '/' NUMBER {
2968 char *buf;
2969
2970 if (asprintf(&buf, "%s/%lld", $1, (long long)$3) == -1)
2971 err(1, "host: asprintf");
2972 free($1);
2973 if (($$ = host(buf)) == NULL) {
2974 /* error. "any" is handled elsewhere */
2975 free(buf);
2976 yyerror("could not parse host specification");
2977 YYERROR;
2978 }
2979 free(buf);
2980 }
2981 | NUMBER '/' NUMBER {
2982 char *buf;
2983
2984 /* ie. for 10/8 parsing */
2985#ifdef __FreeBSD__
2986 if (asprintf(&buf, "%lld/%lld", (long long)$1, (long long)$3) == -1)
2987#else
2988 if (asprintf(&buf, "%lld/%lld", $1, $3) == -1)
2989#endif
2990 err(1, "host: asprintf");
2991 if (($$ = host(buf)) == NULL) {
2992 /* error. "any" is handled elsewhere */
2993 free(buf);
2994 yyerror("could not parse host specification");
2995 YYERROR;
2996 }
2997 free(buf);
2998 }
2999 | dynaddr
3000 | dynaddr '/' NUMBER {
3001 struct node_host *n;
3002
3003 if ($3 < 0 || $3 > 128) {
3004 yyerror("bit number too big");
3005 YYERROR;
3006 }
3007 $$ = $1;
3008 for (n = $1; n != NULL; n = n->next)
3009 set_ipmask(n, $3);
3010 }
3011 | '<' STRING '>' {
3012 if (strlen($2) >= PF_TABLE_NAME_SIZE) {
3013 yyerror("table name '%s' too long", $2);
3014 free($2);
3015 YYERROR;
3016 }
3017 $$ = calloc(1, sizeof(struct node_host));
3018 if ($$ == NULL)
3019 err(1, "host: calloc");
3020 $$->addr.type = PF_ADDR_TABLE;
3021 if (strlcpy($$->addr.v.tblname, $2,
3022 sizeof($$->addr.v.tblname)) >=
3023 sizeof($$->addr.v.tblname))
3024 errx(1, "host: strlcpy");
3025 free($2);
3026 $$->next = NULL;
3027 $$->tail = $$;
3028 }
3029 ;
3030
3031number : NUMBER
3032 | STRING {
3033 u_long ulval;
3034
3035 if (atoul($1, &ulval) == -1) {
3036 yyerror("%s is not a number", $1);
3037 free($1);
3038 YYERROR;
3039 } else
3040 $$ = ulval;
3041 free($1);
3042 }
3043 ;
3044
3045dynaddr : '(' STRING ')' {
3046 int flags = 0;
3047 char *p, *op;
3048
3049 op = $2;
3050 if (!isalpha(op[0])) {
3051 yyerror("invalid interface name '%s'", op);
3052 free(op);
3053 YYERROR;
3054 }
3055 while ((p = strrchr($2, ':')) != NULL) {
3056 if (!strcmp(p+1, "network"))
3057 flags |= PFI_AFLAG_NETWORK;
3058 else if (!strcmp(p+1, "broadcast"))
3059 flags |= PFI_AFLAG_BROADCAST;
3060 else if (!strcmp(p+1, "peer"))
3061 flags |= PFI_AFLAG_PEER;
3062 else if (!strcmp(p+1, "0"))
3063 flags |= PFI_AFLAG_NOALIAS;
3064 else {
3065 yyerror("interface %s has bad modifier",
3066 $2);
3067 free(op);
3068 YYERROR;
3069 }
3070 *p = '\0';
3071 }
3072 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) {
3073 free(op);
3074 yyerror("illegal combination of "
3075 "interface modifiers");
3076 YYERROR;
3077 }
3078 $$ = calloc(1, sizeof(struct node_host));
3079 if ($$ == NULL)
3080 err(1, "address: calloc");
3081 $$->af = 0;
3082 set_ipmask($$, 128);
3083 $$->addr.type = PF_ADDR_DYNIFTL;
3084 $$->addr.iflags = flags;
3085 if (strlcpy($$->addr.v.ifname, $2,
3086 sizeof($$->addr.v.ifname)) >=
3087 sizeof($$->addr.v.ifname)) {
3088 free(op);
3089 free($$);
3090 yyerror("interface name too long");
3091 YYERROR;
3092 }
3093 free(op);
3094 $$->next = NULL;
3095 $$->tail = $$;
3096 }
3097 ;
3098
3099portspec : port_item { $$ = $1; }
3100 | '{' optnl port_list '}' { $$ = $3; }
3101 ;
3102
3103port_list : port_item optnl { $$ = $1; }
3104 | port_list comma port_item optnl {
3105 $1->tail->next = $3;
3106 $1->tail = $3;
3107 $$ = $1;
3108 }
3109 ;
3110
3111port_item : portrange {
3112 $$ = calloc(1, sizeof(struct node_port));
3113 if ($$ == NULL)
3114 err(1, "port_item: calloc");
3115 $$->port[0] = $1.a;
3116 $$->port[1] = $1.b;
3117 if ($1.t)
3118 $$->op = PF_OP_RRG;
3119 else
3120 $$->op = PF_OP_EQ;
3121 $$->next = NULL;
3122 $$->tail = $$;
3123 }
3124 | unaryop portrange {
3125 if ($2.t) {
3126 yyerror("':' cannot be used with an other "
3127 "port operator");
3128 YYERROR;
3129 }
3130 $$ = calloc(1, sizeof(struct node_port));
3131 if ($$ == NULL)
3132 err(1, "port_item: calloc");
3133 $$->port[0] = $2.a;
3134 $$->port[1] = $2.b;
3135 $$->op = $1;
3136 $$->next = NULL;
3137 $$->tail = $$;
3138 }
3139 | portrange PORTBINARY portrange {
3140 if ($1.t || $3.t) {
3141 yyerror("':' cannot be used with an other "
3142 "port operator");
3143 YYERROR;
3144 }
3145 $$ = calloc(1, sizeof(struct node_port));
3146 if ($$ == NULL)
3147 err(1, "port_item: calloc");
3148 $$->port[0] = $1.a;
3149 $$->port[1] = $3.a;
3150 $$->op = $2;
3151 $$->next = NULL;
3152 $$->tail = $$;
3153 }
3154 ;
3155
3156portplain : numberstring {
3157 if (parseport($1, &$$, 0) == -1) {
3158 free($1);
3159 YYERROR;
3160 }
3161 free($1);
3162 }
3163 ;
3164
3165portrange : numberstring {
3166 if (parseport($1, &$$, PPORT_RANGE) == -1) {
3167 free($1);
3168 YYERROR;
3169 }
3170 free($1);
3171 }
3172 ;
3173
3174uids : uid_item { $$ = $1; }
3175 | '{' optnl uid_list '}' { $$ = $3; }
3176 ;
3177
3178uid_list : uid_item optnl { $$ = $1; }
3179 | uid_list comma uid_item optnl {
3180 $1->tail->next = $3;
3181 $1->tail = $3;
3182 $$ = $1;
3183 }
3184 ;
3185
3186uid_item : uid {
3187 $$ = calloc(1, sizeof(struct node_uid));
3188 if ($$ == NULL)
3189 err(1, "uid_item: calloc");
3190 $$->uid[0] = $1;
3191 $$->uid[1] = $1;
3192 $$->op = PF_OP_EQ;
3193 $$->next = NULL;
3194 $$->tail = $$;
3195 }
3196 | unaryop uid {
3197 if ($2 == UID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3198 yyerror("user unknown requires operator = or "
3199 "!=");
3200 YYERROR;
3201 }
3202 $$ = calloc(1, sizeof(struct node_uid));
3203 if ($$ == NULL)
3204 err(1, "uid_item: calloc");
3205 $$->uid[0] = $2;
3206 $$->uid[1] = $2;
3207 $$->op = $1;
3208 $$->next = NULL;
3209 $$->tail = $$;
3210 }
3211 | uid PORTBINARY uid {
3212 if ($1 == UID_MAX || $3 == UID_MAX) {
3213 yyerror("user unknown requires operator = or "
3214 "!=");
3215 YYERROR;
3216 }
3217 $$ = calloc(1, sizeof(struct node_uid));
3218 if ($$ == NULL)
3219 err(1, "uid_item: calloc");
3220 $$->uid[0] = $1;
3221 $$->uid[1] = $3;
3222 $$->op = $2;
3223 $$->next = NULL;
3224 $$->tail = $$;
3225 }
3226 ;
3227
3228uid : STRING {
3229 if (!strcmp($1, "unknown"))
3230 $$ = UID_MAX;
3231 else {
3232 struct passwd *pw;
3233
3234 if ((pw = getpwnam($1)) == NULL) {
3235 yyerror("unknown user %s", $1);
3236 free($1);
3237 YYERROR;
3238 }
3239 $$ = pw->pw_uid;
3240 }
3241 free($1);
3242 }
3243 | NUMBER {
3244 if ($1 < 0 || $1 >= UID_MAX) {
3245 yyerror("illegal uid value %lu", $1);
3246 YYERROR;
3247 }
3248 $$ = $1;
3249 }
3250 ;
3251
3252gids : gid_item { $$ = $1; }
3253 | '{' optnl gid_list '}' { $$ = $3; }
3254 ;
3255
3256gid_list : gid_item optnl { $$ = $1; }
3257 | gid_list comma gid_item optnl {
3258 $1->tail->next = $3;
3259 $1->tail = $3;
3260 $$ = $1;
3261 }
3262 ;
3263
3264gid_item : gid {
3265 $$ = calloc(1, sizeof(struct node_gid));
3266 if ($$ == NULL)
3267 err(1, "gid_item: calloc");
3268 $$->gid[0] = $1;
3269 $$->gid[1] = $1;
3270 $$->op = PF_OP_EQ;
3271 $$->next = NULL;
3272 $$->tail = $$;
3273 }
3274 | unaryop gid {
3275 if ($2 == GID_MAX && $1 != PF_OP_EQ && $1 != PF_OP_NE) {
3276 yyerror("group unknown requires operator = or "
3277 "!=");
3278 YYERROR;
3279 }
3280 $$ = calloc(1, sizeof(struct node_gid));
3281 if ($$ == NULL)
3282 err(1, "gid_item: calloc");
3283 $$->gid[0] = $2;
3284 $$->gid[1] = $2;
3285 $$->op = $1;
3286 $$->next = NULL;
3287 $$->tail = $$;
3288 }
3289 | gid PORTBINARY gid {
3290 if ($1 == GID_MAX || $3 == GID_MAX) {
3291 yyerror("group unknown requires operator = or "
3292 "!=");
3293 YYERROR;
3294 }
3295 $$ = calloc(1, sizeof(struct node_gid));
3296 if ($$ == NULL)
3297 err(1, "gid_item: calloc");
3298 $$->gid[0] = $1;
3299 $$->gid[1] = $3;
3300 $$->op = $2;
3301 $$->next = NULL;
3302 $$->tail = $$;
3303 }
3304 ;
3305
3306gid : STRING {
3307 if (!strcmp($1, "unknown"))
3308 $$ = GID_MAX;
3309 else {
3310 struct group *grp;
3311
3312 if ((grp = getgrnam($1)) == NULL) {
3313 yyerror("unknown group %s", $1);
3314 free($1);
3315 YYERROR;
3316 }
3317 $$ = grp->gr_gid;
3318 }
3319 free($1);
3320 }
3321 | NUMBER {
3322 if ($1 < 0 || $1 >= GID_MAX) {
3323 yyerror("illegal gid value %lu", $1);
3324 YYERROR;
3325 }
3326 $$ = $1;
3327 }
3328 ;
3329
3330flag : STRING {
3331 int f;
3332
3333 if ((f = parse_flags($1)) < 0) {
3334 yyerror("bad flags %s", $1);
3335 free($1);
3336 YYERROR;
3337 }
3338 free($1);
3339 $$.b1 = f;
3340 }
3341 ;
3342
3343flags : FLAGS flag '/' flag { $$.b1 = $2.b1; $$.b2 = $4.b1; }
3344 | FLAGS '/' flag { $$.b1 = 0; $$.b2 = $3.b1; }
3345 | FLAGS ANY { $$.b1 = 0; $$.b2 = 0; }
3346 ;
3347
3348icmpspec : ICMPTYPE icmp_item { $$ = $2; }
3349 | ICMPTYPE '{' optnl icmp_list '}' { $$ = $4; }
3350 | ICMP6TYPE icmp6_item { $$ = $2; }
3351 | ICMP6TYPE '{' optnl icmp6_list '}' { $$ = $4; }
3352 ;
3353
3354icmp_list : icmp_item optnl { $$ = $1; }
3355 | icmp_list comma icmp_item optnl {
3356 $1->tail->next = $3;
3357 $1->tail = $3;
3358 $$ = $1;
3359 }
3360 ;
3361
3362icmp6_list : icmp6_item optnl { $$ = $1; }
3363 | icmp6_list comma icmp6_item optnl {
3364 $1->tail->next = $3;
3365 $1->tail = $3;
3366 $$ = $1;
3367 }
3368 ;
3369
3370icmp_item : icmptype {
3371 $$ = calloc(1, sizeof(struct node_icmp));
3372 if ($$ == NULL)
3373 err(1, "icmp_item: calloc");
3374 $$->type = $1;
3375 $$->code = 0;
3376 $$->proto = IPPROTO_ICMP;
3377 $$->next = NULL;
3378 $$->tail = $$;
3379 }
3380 | icmptype CODE STRING {
3381 const struct icmpcodeent *p;
3382
3383 if ((p = geticmpcodebyname($1-1, $3, AF_INET)) == NULL) {
3384 yyerror("unknown icmp-code %s", $3);
3385 free($3);
3386 YYERROR;
3387 }
3388
3389 free($3);
3390 $$ = calloc(1, sizeof(struct node_icmp));
3391 if ($$ == NULL)
3392 err(1, "icmp_item: calloc");
3393 $$->type = $1;
3394 $$->code = p->code + 1;
3395 $$->proto = IPPROTO_ICMP;
3396 $$->next = NULL;
3397 $$->tail = $$;
3398 }
3399 | icmptype CODE NUMBER {
3400 if ($3 < 0 || $3 > 255) {
3401 yyerror("illegal icmp-code %lu", $3);
3402 YYERROR;
3403 }
3404 $$ = calloc(1, sizeof(struct node_icmp));
3405 if ($$ == NULL)
3406 err(1, "icmp_item: calloc");
3407 $$->type = $1;
3408 $$->code = $3 + 1;
3409 $$->proto = IPPROTO_ICMP;
3410 $$->next = NULL;
3411 $$->tail = $$;
3412 }
3413 ;
3414
3415icmp6_item : icmp6type {
3416 $$ = calloc(1, sizeof(struct node_icmp));
3417 if ($$ == NULL)
3418 err(1, "icmp_item: calloc");
3419 $$->type = $1;
3420 $$->code = 0;
3421 $$->proto = IPPROTO_ICMPV6;
3422 $$->next = NULL;
3423 $$->tail = $$;
3424 }
3425 | icmp6type CODE STRING {
3426 const struct icmpcodeent *p;
3427
3428 if ((p = geticmpcodebyname($1-1, $3, AF_INET6)) == NULL) {
3429 yyerror("unknown icmp6-code %s", $3);
3430 free($3);
3431 YYERROR;
3432 }
3433 free($3);
3434
3435 $$ = calloc(1, sizeof(struct node_icmp));
3436 if ($$ == NULL)
3437 err(1, "icmp_item: calloc");
3438 $$->type = $1;
3439 $$->code = p->code + 1;
3440 $$->proto = IPPROTO_ICMPV6;
3441 $$->next = NULL;
3442 $$->tail = $$;
3443 }
3444 | icmp6type CODE NUMBER {
3445 if ($3 < 0 || $3 > 255) {
3446 yyerror("illegal icmp-code %lu", $3);
3447 YYERROR;
3448 }
3449 $$ = calloc(1, sizeof(struct node_icmp));
3450 if ($$ == NULL)
3451 err(1, "icmp_item: calloc");
3452 $$->type = $1;
3453 $$->code = $3 + 1;
3454 $$->proto = IPPROTO_ICMPV6;
3455 $$->next = NULL;
3456 $$->tail = $$;
3457 }
3458 ;
3459
3460icmptype : STRING {
3461 const struct icmptypeent *p;
3462
3463 if ((p = geticmptypebyname($1, AF_INET)) == NULL) {
3464 yyerror("unknown icmp-type %s", $1);
3465 free($1);
3466 YYERROR;
3467 }
3468 $$ = p->type + 1;
3469 free($1);
3470 }
3471 | NUMBER {
3472 if ($1 < 0 || $1 > 255) {
3473 yyerror("illegal icmp-type %lu", $1);
3474 YYERROR;
3475 }
3476 $$ = $1 + 1;
3477 }
3478 ;
3479
3480icmp6type : STRING {
3481 const struct icmptypeent *p;
3482
3483 if ((p = geticmptypebyname($1, AF_INET6)) ==
3484 NULL) {
3485 yyerror("unknown icmp6-type %s", $1);
3486 free($1);
3487 YYERROR;
3488 }
3489 $$ = p->type + 1;
3490 free($1);
3491 }
3492 | NUMBER {
3493 if ($1 < 0 || $1 > 255) {
3494 yyerror("illegal icmp6-type %lu", $1);
3495 YYERROR;
3496 }
3497 $$ = $1 + 1;
3498 }
3499 ;
3500
3501tos : STRING {
3502 if (!strcmp($1, "lowdelay"))
3503 $$ = IPTOS_LOWDELAY;
3504 else if (!strcmp($1, "throughput"))
3505 $$ = IPTOS_THROUGHPUT;
3506 else if (!strcmp($1, "reliability"))
3507 $$ = IPTOS_RELIABILITY;
3508 else if ($1[0] == '0' && $1[1] == 'x')
3509 $$ = strtoul($1, NULL, 16);
3510 else
3511 $$ = 0; /* flag bad argument */
3512 if (!$$ || $$ > 255) {
3513 yyerror("illegal tos value %s", $1);
3514 free($1);
3515 YYERROR;
3516 }
3517 free($1);
3518 }
3519 | NUMBER {
3520 $$ = $1;
3521 if (!$$ || $$ > 255) {
3522 yyerror("illegal tos value %s", $1);
3523 YYERROR;
3524 }
3525 }
3526 ;
3527
3528sourcetrack : SOURCETRACK { $$ = PF_SRCTRACK; }
3529 | SOURCETRACK GLOBAL { $$ = PF_SRCTRACK_GLOBAL; }
3530 | SOURCETRACK RULE { $$ = PF_SRCTRACK_RULE; }
3531 ;
3532
3533statelock : IFBOUND {
3534 $$ = PFRULE_IFBOUND;
3535 }
3536 | FLOATING {
3537 $$ = 0;
3538 }
3539 ;
3540
3541keep : NO STATE {
3542 $$.action = 0;
3543 $$.options = NULL;
3544 }
3545 | KEEP STATE state_opt_spec {
3546 $$.action = PF_STATE_NORMAL;
3547 $$.options = $3;
3548 }
3549 | MODULATE STATE state_opt_spec {
3550 $$.action = PF_STATE_MODULATE;
3551 $$.options = $3;
3552 }
3553 | SYNPROXY STATE state_opt_spec {
3554 $$.action = PF_STATE_SYNPROXY;
3555 $$.options = $3;
3556 }
3557 ;
3558
3559flush : /* empty */ { $$ = 0; }
3560 | FLUSH { $$ = PF_FLUSH; }
3561 | FLUSH GLOBAL {
3562 $$ = PF_FLUSH | PF_FLUSH_GLOBAL;
3563 }
3564 ;
3565
3566state_opt_spec : '(' state_opt_list ')' { $$ = $2; }
3567 | /* empty */ { $$ = NULL; }
3568 ;
3569
3570state_opt_list : state_opt_item { $$ = $1; }
3571 | state_opt_list comma state_opt_item {
3572 $1->tail->next = $3;
3573 $1->tail = $3;
3574 $$ = $1;
3575 }
3576 ;
3577
3578state_opt_item : MAXIMUM NUMBER {
3579 if ($2 < 0 || $2 > UINT_MAX) {
3580 yyerror("only positive values permitted");
3581 YYERROR;
3582 }
3583 $$ = calloc(1, sizeof(struct node_state_opt));
3584 if ($$ == NULL)
3585 err(1, "state_opt_item: calloc");
3586 $$->type = PF_STATE_OPT_MAX;
3587 $$->data.max_states = $2;
3588 $$->next = NULL;
3589 $$->tail = $$;
3590 }
3591 | NOSYNC {
3592 $$ = calloc(1, sizeof(struct node_state_opt));
3593 if ($$ == NULL)
3594 err(1, "state_opt_item: calloc");
3595 $$->type = PF_STATE_OPT_NOSYNC;
3596 $$->next = NULL;
3597 $$->tail = $$;
3598 }
3599 | MAXSRCSTATES NUMBER {
3600 if ($2 < 0 || $2 > UINT_MAX) {
3601 yyerror("only positive values permitted");
3602 YYERROR;
3603 }
3604 $$ = calloc(1, sizeof(struct node_state_opt));
3605 if ($$ == NULL)
3606 err(1, "state_opt_item: calloc");
3607 $$->type = PF_STATE_OPT_MAX_SRC_STATES;
3608 $$->data.max_src_states = $2;
3609 $$->next = NULL;
3610 $$->tail = $$;
3611 }
3612 | MAXSRCCONN NUMBER {
3613 if ($2 < 0 || $2 > UINT_MAX) {
3614 yyerror("only positive values permitted");
3615 YYERROR;
3616 }
3617 $$ = calloc(1, sizeof(struct node_state_opt));
3618 if ($$ == NULL)
3619 err(1, "state_opt_item: calloc");
3620 $$->type = PF_STATE_OPT_MAX_SRC_CONN;
3621 $$->data.max_src_conn = $2;
3622 $$->next = NULL;
3623 $$->tail = $$;
3624 }
3625 | MAXSRCCONNRATE NUMBER '/' NUMBER {
3626 if ($2 < 0 || $2 > UINT_MAX ||
3627 $4 < 0 || $4 > UINT_MAX) {
3628 yyerror("only positive values permitted");
3629 YYERROR;
3630 }
3631 $$ = calloc(1, sizeof(struct node_state_opt));
3632 if ($$ == NULL)
3633 err(1, "state_opt_item: calloc");
3634 $$->type = PF_STATE_OPT_MAX_SRC_CONN_RATE;
3635 $$->data.max_src_conn_rate.limit = $2;
3636 $$->data.max_src_conn_rate.seconds = $4;
3637 $$->next = NULL;
3638 $$->tail = $$;
3639 }
3640 | OVERLOAD '<' STRING '>' flush {
3641 if (strlen($3) >= PF_TABLE_NAME_SIZE) {
3642 yyerror("table name '%s' too long", $3);
3643 free($3);
3644 YYERROR;
3645 }
3646 $$ = calloc(1, sizeof(struct node_state_opt));
3647 if ($$ == NULL)
3648 err(1, "state_opt_item: calloc");
3649 if (strlcpy($$->data.overload.tblname, $3,
3650 PF_TABLE_NAME_SIZE) >= PF_TABLE_NAME_SIZE)
3651 errx(1, "state_opt_item: strlcpy");
3652 free($3);
3653 $$->type = PF_STATE_OPT_OVERLOAD;
3654 $$->data.overload.flush = $5;
3655 $$->next = NULL;
3656 $$->tail = $$;
3657 }
3658 | MAXSRCNODES NUMBER {
3659 if ($2 < 0 || $2 > UINT_MAX) {
3660 yyerror("only positive values permitted");
3661 YYERROR;
3662 }
3663 $$ = calloc(1, sizeof(struct node_state_opt));
3664 if ($$ == NULL)
3665 err(1, "state_opt_item: calloc");
3666 $$->type = PF_STATE_OPT_MAX_SRC_NODES;
3667 $$->data.max_src_nodes = $2;
3668 $$->next = NULL;
3669 $$->tail = $$;
3670 }
3671 | sourcetrack {
3672 $$ = calloc(1, sizeof(struct node_state_opt));
3673 if ($$ == NULL)
3674 err(1, "state_opt_item: calloc");
3675 $$->type = PF_STATE_OPT_SRCTRACK;
3676 $$->data.src_track = $1;
3677 $$->next = NULL;
3678 $$->tail = $$;
3679 }
3680 | statelock {
3681 $$ = calloc(1, sizeof(struct node_state_opt));
3682 if ($$ == NULL)
3683 err(1, "state_opt_item: calloc");
3684 $$->type = PF_STATE_OPT_STATELOCK;
3685 $$->data.statelock = $1;
3686 $$->next = NULL;
3687 $$->tail = $$;
3688 }
3689 | SLOPPY {
3690 $$ = calloc(1, sizeof(struct node_state_opt));
3691 if ($$ == NULL)
3692 err(1, "state_opt_item: calloc");
3693 $$->type = PF_STATE_OPT_SLOPPY;
3694 $$->next = NULL;
3695 $$->tail = $$;
3696 }
3697 | STRING NUMBER {
3698 int i;
3699
3700 if ($2 < 0 || $2 > UINT_MAX) {
3701 yyerror("only positive values permitted");
3702 YYERROR;
3703 }
3704 for (i = 0; pf_timeouts[i].name &&
3705 strcmp(pf_timeouts[i].name, $1); ++i)
3706 ; /* nothing */
3707 if (!pf_timeouts[i].name) {
3708 yyerror("illegal timeout name %s", $1);
3709 free($1);
3710 YYERROR;
3711 }
3712 if (strchr(pf_timeouts[i].name, '.') == NULL) {
3713 yyerror("illegal state timeout %s", $1);
3714 free($1);
3715 YYERROR;
3716 }
3717 free($1);
3718 $$ = calloc(1, sizeof(struct node_state_opt));
3719 if ($$ == NULL)
3720 err(1, "state_opt_item: calloc");
3721 $$->type = PF_STATE_OPT_TIMEOUT;
3722 $$->data.timeout.number = pf_timeouts[i].timeout;
3723 $$->data.timeout.seconds = $2;
3724 $$->next = NULL;
3725 $$->tail = $$;
3726 }
3727 ;
3728
3729label : LABEL STRING {
3730 $$ = $2;
3731 }
3732 ;
3733
3734qname : QUEUE STRING {
3735 $$.qname = $2;
3736 $$.pqname = NULL;
3737 }
3738 | QUEUE '(' STRING ')' {
3739 $$.qname = $3;
3740 $$.pqname = NULL;
3741 }
3742 | QUEUE '(' STRING comma STRING ')' {
3743 $$.qname = $3;
3744 $$.pqname = $5;
3745 }
3746 ;
3747
3748no : /* empty */ { $$ = 0; }
3749 | NO { $$ = 1; }
3750 ;
3751
3752portstar : numberstring {
3753 if (parseport($1, &$$, PPORT_RANGE|PPORT_STAR) == -1) {
3754 free($1);
3755 YYERROR;
3756 }
3757 free($1);
3758 }
3759 ;
3760
3761redirspec : host { $$ = $1; }
3762 | '{' optnl redir_host_list '}' { $$ = $3; }
3763 ;
3764
3765redir_host_list : host optnl { $$ = $1; }
3766 | redir_host_list comma host optnl {
3767 $1->tail->next = $3;
3768 $1->tail = $3->tail;
3769 $$ = $1;
3770 }
3771 ;
3772
3773redirpool : /* empty */ { $$ = NULL; }
3774 | ARROW redirspec {
3775 $$ = calloc(1, sizeof(struct redirection));
3776 if ($$ == NULL)
3777 err(1, "redirection: calloc");
3778 $$->host = $2;
3779 $$->rport.a = $$->rport.b = $$->rport.t = 0;
3780 }
3781 | ARROW redirspec PORT portstar {
3782 $$ = calloc(1, sizeof(struct redirection));
3783 if ($$ == NULL)
3784 err(1, "redirection: calloc");
3785 $$->host = $2;
3786 $$->rport = $4;
3787 }
3788 ;
3789
3790hashkey : /* empty */
3791 {
3792 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3793 if ($$ == NULL)
3794 err(1, "hashkey: calloc");
3795 $$->key32[0] = arc4random();
3796 $$->key32[1] = arc4random();
3797 $$->key32[2] = arc4random();
3798 $$->key32[3] = arc4random();
3799 }
3800 | string
3801 {
3802 if (!strncmp($1, "0x", 2)) {
3803 if (strlen($1) != 34) {
3804 free($1);
3805 yyerror("hex key must be 128 bits "
3806 "(32 hex digits) long");
3807 YYERROR;
3808 }
3809 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3810 if ($$ == NULL)
3811 err(1, "hashkey: calloc");
3812
3813 if (sscanf($1, "0x%8x%8x%8x%8x",
3814 &$$->key32[0], &$$->key32[1],
3815 &$$->key32[2], &$$->key32[3]) != 4) {
3816 free($$);
3817 free($1);
3818 yyerror("invalid hex key");
3819 YYERROR;
3820 }
3821 } else {
3822 MD5_CTX context;
3823
3824 $$ = calloc(1, sizeof(struct pf_poolhashkey));
3825 if ($$ == NULL)
3826 err(1, "hashkey: calloc");
3827 MD5Init(&context);
3828 MD5Update(&context, (unsigned char *)$1,
3829 strlen($1));
3830 MD5Final((unsigned char *)$$, &context);
3831 HTONL($$->key32[0]);
3832 HTONL($$->key32[1]);
3833 HTONL($$->key32[2]);
3834 HTONL($$->key32[3]);
3835 }
3836 free($1);
3837 }
3838 ;
3839
3840pool_opts : { bzero(&pool_opts, sizeof pool_opts); }
3841 pool_opts_l
3842 { $$ = pool_opts; }
3843 | /* empty */ {
3844 bzero(&pool_opts, sizeof pool_opts);
3845 $$ = pool_opts;
3846 }
3847 ;
3848
3849pool_opts_l : pool_opts_l pool_opt
3850 | pool_opt
3851 ;
3852
3853pool_opt : BITMASK {
3854 if (pool_opts.type) {
3855 yyerror("pool type cannot be redefined");
3856 YYERROR;
3857 }
3858 pool_opts.type = PF_POOL_BITMASK;
3859 }
3860 | RANDOM {
3861 if (pool_opts.type) {
3862 yyerror("pool type cannot be redefined");
3863 YYERROR;
3864 }
3865 pool_opts.type = PF_POOL_RANDOM;
3866 }
3867 | SOURCEHASH hashkey {
3868 if (pool_opts.type) {
3869 yyerror("pool type cannot be redefined");
3870 YYERROR;
3871 }
3872 pool_opts.type = PF_POOL_SRCHASH;
3873 pool_opts.key = $2;
3874 }
3875 | ROUNDROBIN {
3876 if (pool_opts.type) {
3877 yyerror("pool type cannot be redefined");
3878 YYERROR;
3879 }
3880 pool_opts.type = PF_POOL_ROUNDROBIN;
3881 }
3882 | STATICPORT {
3883 if (pool_opts.staticport) {
3884 yyerror("static-port cannot be redefined");
3885 YYERROR;
3886 }
3887 pool_opts.staticport = 1;
3888 }
3889 | STICKYADDRESS {
3890 if (filter_opts.marker & POM_STICKYADDRESS) {
3891 yyerror("sticky-address cannot be redefined");
3892 YYERROR;
3893 }
3894 pool_opts.marker |= POM_STICKYADDRESS;
3895 pool_opts.opts |= PF_POOL_STICKYADDR;
3896 }
3897 ;
3898
3899redirection : /* empty */ { $$ = NULL; }
3900 | ARROW host {
3901 $$ = calloc(1, sizeof(struct redirection));
3902 if ($$ == NULL)
3903 err(1, "redirection: calloc");
3904 $$->host = $2;
3905 $$->rport.a = $$->rport.b = $$->rport.t = 0;
3906 }
3907 | ARROW host PORT portstar {
3908 $$ = calloc(1, sizeof(struct redirection));
3909 if ($$ == NULL)
3910 err(1, "redirection: calloc");
3911 $$->host = $2;
3912 $$->rport = $4;
3913 }
3914 ;
3915
3916natpasslog : /* empty */ { $$.b1 = $$.b2 = 0; $$.w2 = 0; }
3917 | PASS { $$.b1 = 1; $$.b2 = 0; $$.w2 = 0; }
3918 | PASS log { $$.b1 = 1; $$.b2 = $2.log; $$.w2 = $2.logif; }
3919 | log { $$.b1 = 0; $$.b2 = $1.log; $$.w2 = $1.logif; }
3920 ;
3921
3922nataction : no NAT natpasslog {
3923 if ($1 && $3.b1) {
3924 yyerror("\"pass\" not valid with \"no\"");
3925 YYERROR;
3926 }
3927 if ($1)
3928 $$.b1 = PF_NONAT;
3929 else
3930 $$.b1 = PF_NAT;
3931 $$.b2 = $3.b1;
3932 $$.w = $3.b2;
3933 $$.w2 = $3.w2;
3934 }
3935 | no RDR natpasslog {
3936 if ($1 && $3.b1) {
3937 yyerror("\"pass\" not valid with \"no\"");
3938 YYERROR;
3939 }
3940 if ($1)
3941 $$.b1 = PF_NORDR;
3942 else
3943 $$.b1 = PF_RDR;
3944 $$.b2 = $3.b1;
3945 $$.w = $3.b2;
3946 $$.w2 = $3.w2;
3947 }
3948 ;
3949
3950natrule : nataction interface af proto fromto tag tagged rtable
3951 redirpool pool_opts
3952 {
3953 struct pf_rule r;
3954
3955 if (check_rulestate(PFCTL_STATE_NAT))
3956 YYERROR;
3957
3958 memset(&r, 0, sizeof(r));
3959
3960 r.action = $1.b1;
3961 r.natpass = $1.b2;
3962 r.log = $1.w;
3963 r.logif = $1.w2;
3964 r.af = $3;
3965
3966 if (!r.af) {
3967 if ($5.src.host && $5.src.host->af &&
3968 !$5.src.host->ifindex)
3969 r.af = $5.src.host->af;
3970 else if ($5.dst.host && $5.dst.host->af &&
3971 !$5.dst.host->ifindex)
3972 r.af = $5.dst.host->af;
3973 }
3974
3975 if ($6 != NULL)
3976 if (strlcpy(r.tagname, $6, PF_TAG_NAME_SIZE) >=
3977 PF_TAG_NAME_SIZE) {
3978 yyerror("tag too long, max %u chars",
3979 PF_TAG_NAME_SIZE - 1);
3980 YYERROR;
3981 }
3982
3983 if ($7.name)
3984 if (strlcpy(r.match_tagname, $7.name,
3985 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
3986 yyerror("tag too long, max %u chars",
3987 PF_TAG_NAME_SIZE - 1);
3988 YYERROR;
3989 }
3990 r.match_tag_not = $7.neg;
3991 r.rtableid = $8;
3992
3993 if (r.action == PF_NONAT || r.action == PF_NORDR) {
3994 if ($9 != NULL) {
3995 yyerror("translation rule with 'no' "
3996 "does not need '->'");
3997 YYERROR;
3998 }
3999 } else {
4000 if ($9 == NULL || $9->host == NULL) {
4001 yyerror("translation rule requires '-> "
4002 "address'");
4003 YYERROR;
4004 }
4005 if (!r.af && ! $9->host->ifindex)
4006 r.af = $9->host->af;
4007
4008 remove_invalid_hosts(&$9->host, &r.af);
4009 if (invalid_redirect($9->host, r.af))
4010 YYERROR;
4011 if (check_netmask($9->host, r.af))
4012 YYERROR;
4013
4014 r.rpool.proxy_port[0] = ntohs($9->rport.a);
4015
4016 switch (r.action) {
4017 case PF_RDR:
4018 if (!$9->rport.b && $9->rport.t &&
4019 $5.dst.port != NULL) {
4020 r.rpool.proxy_port[1] =
4021 ntohs($9->rport.a) +
4022 (ntohs(
4023 $5.dst.port->port[1]) -
4024 ntohs(
4025 $5.dst.port->port[0]));
4026 } else
4027 r.rpool.proxy_port[1] =
4028 ntohs($9->rport.b);
4029 break;
4030 case PF_NAT:
4031 r.rpool.proxy_port[1] =
4032 ntohs($9->rport.b);
4033 if (!r.rpool.proxy_port[0] &&
4034 !r.rpool.proxy_port[1]) {
4035 r.rpool.proxy_port[0] =
4036 PF_NAT_PROXY_PORT_LOW;
4037 r.rpool.proxy_port[1] =
4038 PF_NAT_PROXY_PORT_HIGH;
4039 } else if (!r.rpool.proxy_port[1])
4040 r.rpool.proxy_port[1] =
4041 r.rpool.proxy_port[0];
4042 break;
4043 default:
4044 break;
4045 }
4046
4047 r.rpool.opts = $10.type;
4048 if ((r.rpool.opts & PF_POOL_TYPEMASK) ==
4049 PF_POOL_NONE && ($9->host->next != NULL ||
4050 $9->host->addr.type == PF_ADDR_TABLE ||
4051 DYNIF_MULTIADDR($9->host->addr)))
4052 r.rpool.opts = PF_POOL_ROUNDROBIN;
4053 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4054 PF_POOL_ROUNDROBIN &&
4055 disallow_table($9->host, "tables are only "
4056 "supported in round-robin redirection "
4057 "pools"))
4058 YYERROR;
4059 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4060 PF_POOL_ROUNDROBIN &&
4061 disallow_alias($9->host, "interface (%s) "
4062 "is only supported in round-robin "
4063 "redirection pools"))
4064 YYERROR;
4065 if ($9->host->next != NULL) {
4066 if ((r.rpool.opts & PF_POOL_TYPEMASK) !=
4067 PF_POOL_ROUNDROBIN) {
4068 yyerror("only round-robin "
4069 "valid for multiple "
4070 "redirection addresses");
4071 YYERROR;
4072 }
4073 }
4074 }
4075
4076 if ($10.key != NULL)
4077 memcpy(&r.rpool.key, $10.key,
4078 sizeof(struct pf_poolhashkey));
4079
4080 if ($10.opts)
4081 r.rpool.opts |= $10.opts;
4082
4083 if ($10.staticport) {
4084 if (r.action != PF_NAT) {
4085 yyerror("the 'static-port' option is "
4086 "only valid with nat rules");
4087 YYERROR;
4088 }
4089 if (r.rpool.proxy_port[0] !=
4090 PF_NAT_PROXY_PORT_LOW &&
4091 r.rpool.proxy_port[1] !=
4092 PF_NAT_PROXY_PORT_HIGH) {
4093 yyerror("the 'static-port' option can't"
4094 " be used when specifying a port"
4095 " range");
4096 YYERROR;
4097 }
4098 r.rpool.proxy_port[0] = 0;
4099 r.rpool.proxy_port[1] = 0;
4100 }
4101
4102 expand_rule(&r, $2, $9 == NULL ? NULL : $9->host, $4,
4103 $5.src_os, $5.src.host, $5.src.port, $5.dst.host,
4104 $5.dst.port, 0, 0, 0, "");
4105 free($9);
4106 }
4107 ;
4108
4109binatrule : no BINAT natpasslog interface af proto FROM host toipspec tag
4110 tagged rtable redirection
4111 {
4112 struct pf_rule binat;
4113 struct pf_pooladdr *pa;
4114
4115 if (check_rulestate(PFCTL_STATE_NAT))
4116 YYERROR;
4117 if (disallow_urpf_failed($9, "\"urpf-failed\" is not "
4118 "permitted as a binat destination"))
4119 YYERROR;
4120
4121 memset(&binat, 0, sizeof(binat));
4122
4123 if ($1 && $3.b1) {
4124 yyerror("\"pass\" not valid with \"no\"");
4125 YYERROR;
4126 }
4127 if ($1)
4128 binat.action = PF_NOBINAT;
4129 else
4130 binat.action = PF_BINAT;
4131 binat.natpass = $3.b1;
4132 binat.log = $3.b2;
4133 binat.logif = $3.w2;
4134 binat.af = $5;
4135 if (!binat.af && $8 != NULL && $8->af)
4136 binat.af = $8->af;
4137 if (!binat.af && $9 != NULL && $9->af)
4138 binat.af = $9->af;
4139
4140 if (!binat.af && $13 != NULL && $13->host)
4141 binat.af = $13->host->af;
4142 if (!binat.af) {
4143 yyerror("address family (inet/inet6) "
4144 "undefined");
4145 YYERROR;
4146 }
4147
4148 if ($4 != NULL) {
4149 memcpy(binat.ifname, $4->ifname,
4150 sizeof(binat.ifname));
4151 binat.ifnot = $4->not;
4152 free($4);
4153 }
4154
4155 if ($10 != NULL)
4156 if (strlcpy(binat.tagname, $10,
4157 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4158 yyerror("tag too long, max %u chars",
4159 PF_TAG_NAME_SIZE - 1);
4160 YYERROR;
4161 }
4162 if ($11.name)
4163 if (strlcpy(binat.match_tagname, $11.name,
4164 PF_TAG_NAME_SIZE) >= PF_TAG_NAME_SIZE) {
4165 yyerror("tag too long, max %u chars",
4166 PF_TAG_NAME_SIZE - 1);
4167 YYERROR;
4168 }
4169 binat.match_tag_not = $11.neg;
4170 binat.rtableid = $12;
4171
4172 if ($6 != NULL) {
4173 binat.proto = $6->proto;
4174 free($6);
4175 }
4176
4177 if ($8 != NULL && disallow_table($8, "invalid use of "
4178 "table <%s> as the source address of a binat rule"))
4179 YYERROR;
4180 if ($8 != NULL && disallow_alias($8, "invalid use of "
4181 "interface (%s) as the source address of a binat "
4182 "rule"))
4183 YYERROR;
4184 if ($13 != NULL && $13->host != NULL && disallow_table(
4185 $13->host, "invalid use of table <%s> as the "
4186 "redirect address of a binat rule"))
4187 YYERROR;
4188 if ($13 != NULL && $13->host != NULL && disallow_alias(
4189 $13->host, "invalid use of interface (%s) as the "
4190 "redirect address of a binat rule"))
4191 YYERROR;
4192
4193 if ($8 != NULL) {
4194 if ($8->next) {
4195 yyerror("multiple binat ip addresses");
4196 YYERROR;
4197 }
4198 if ($8->addr.type == PF_ADDR_DYNIFTL)
4199 $8->af = binat.af;
4200 if ($8->af != binat.af) {
4201 yyerror("binat ip versions must match");
4202 YYERROR;
4203 }
4204 if (check_netmask($8, binat.af))
4205 YYERROR;
4206 memcpy(&binat.src.addr, &$8->addr,
4207 sizeof(binat.src.addr));
4208 free($8);
4209 }
4210 if ($9 != NULL) {
4211 if ($9->next) {
4212 yyerror("multiple binat ip addresses");
4213 YYERROR;
4214 }
4215 if ($9->af != binat.af && $9->af) {
4216 yyerror("binat ip versions must match");
4217 YYERROR;
4218 }
4219 if (check_netmask($9, binat.af))
4220 YYERROR;
4221 memcpy(&binat.dst.addr, &$9->addr,
4222 sizeof(binat.dst.addr));
4223 binat.dst.neg = $9->not;
4224 free($9);
4225 }
4226
4227 if (binat.action == PF_NOBINAT) {
4228 if ($13 != NULL) {
4229 yyerror("'no binat' rule does not need"
4230 " '->'");
4231 YYERROR;
4232 }
4233 } else {
4234 if ($13 == NULL || $13->host == NULL) {
4235 yyerror("'binat' rule requires"
4236 " '-> address'");
4237 YYERROR;
4238 }
4239
4240 remove_invalid_hosts(&$13->host, &binat.af);
4241 if (invalid_redirect($13->host, binat.af))
4242 YYERROR;
4243 if ($13->host->next != NULL) {
4244 yyerror("binat rule must redirect to "
4245 "a single address");
4246 YYERROR;
4247 }
4248 if (check_netmask($13->host, binat.af))
4249 YYERROR;
4250
4251 if (!PF_AZERO(&binat.src.addr.v.a.mask,
4252 binat.af) &&
4253 !PF_AEQ(&binat.src.addr.v.a.mask,
4254 &$13->host->addr.v.a.mask, binat.af)) {
4255 yyerror("'binat' source mask and "
4256 "redirect mask must be the same");
4257 YYERROR;
4258 }
4259
4260 TAILQ_INIT(&binat.rpool.list);
4261 pa = calloc(1, sizeof(struct pf_pooladdr));
4262 if (pa == NULL)
4263 err(1, "binat: calloc");
4264 pa->addr = $13->host->addr;
4265 pa->ifname[0] = 0;
4266 TAILQ_INSERT_TAIL(&binat.rpool.list,
4267 pa, entries);
4268
4269 free($13);
4270 }
4271
4272 pfctl_add_rule(pf, &binat, "");
4273 }
4274 ;
4275
4276tag : /* empty */ { $$ = NULL; }
4277 | TAG STRING { $$ = $2; }
4278 ;
4279
4280tagged : /* empty */ { $$.neg = 0; $$.name = NULL; }
4281 | not TAGGED string { $$.neg = $1; $$.name = $3; }
4282 ;
4283
4284rtable : /* empty */ { $$ = -1; }
4285 | RTABLE NUMBER {
4286 if ($2 < 0 || $2 > rt_tableid_max()) {
4287 yyerror("invalid rtable id");
4288 YYERROR;
4289 }
4290 $$ = $2;
4291 }
4292 ;
4293
4294route_host : STRING {
4295 $$ = calloc(1, sizeof(struct node_host));
4296 if ($$ == NULL)
4297 err(1, "route_host: calloc");
4298 $$->ifname = $1;
4299 set_ipmask($$, 128);
4300 $$->next = NULL;
4301 $$->tail = $$;
4302 }
4303 | '(' STRING host ')' {
4304 $$ = $3;
4305 $$->ifname = $2;
4306 }
4307 ;
4308
4309route_host_list : route_host optnl { $$ = $1; }
4310 | route_host_list comma route_host optnl {
4311 if ($1->af == 0)
4312 $1->af = $3->af;
4313 if ($1->af != $3->af) {
4314 yyerror("all pool addresses must be in the "
4315 "same address family");
4316 YYERROR;
4317 }
4318 $1->tail->next = $3;
4319 $1->tail = $3->tail;
4320 $$ = $1;
4321 }
4322 ;
4323
4324routespec : route_host { $$ = $1; }
4325 | '{' optnl route_host_list '}' { $$ = $3; }
4326 ;
4327
4328route : /* empty */ {
4329 $$.host = NULL;
4330 $$.rt = 0;
4331 $$.pool_opts = 0;
4332 }
4333 | FASTROUTE {
4334 $$.host = NULL;
4335 $$.rt = PF_FASTROUTE;
4336 $$.pool_opts = 0;
4337 }
4338 | ROUTETO routespec pool_opts {
4339 $$.host = $2;
4340 $$.rt = PF_ROUTETO;
4341 $$.pool_opts = $3.type | $3.opts;
4342 if ($3.key != NULL)
4343 $$.key = $3.key;
4344 }
4345 | REPLYTO routespec pool_opts {
4346 $$.host = $2;
4347 $$.rt = PF_REPLYTO;
4348 $$.pool_opts = $3.type | $3.opts;
4349 if ($3.key != NULL)
4350 $$.key = $3.key;
4351 }
4352 | DUPTO routespec pool_opts {
4353 $$.host = $2;
4354 $$.rt = PF_DUPTO;
4355 $$.pool_opts = $3.type | $3.opts;
4356 if ($3.key != NULL)
4357 $$.key = $3.key;
4358 }
4359 ;
4360
4361timeout_spec : STRING NUMBER
4362 {
4363 if (check_rulestate(PFCTL_STATE_OPTION)) {
4364 free($1);
4365 YYERROR;
4366 }
4367 if ($2 < 0 || $2 > UINT_MAX) {
4368 yyerror("only positive values permitted");
4369 YYERROR;
4370 }
4371 if (pfctl_set_timeout(pf, $1, $2, 0) != 0) {
4372 yyerror("unknown timeout %s", $1);
4373 free($1);
4374 YYERROR;
4375 }
4376 free($1);
4377 }
4378 ;
4379
4380timeout_list : timeout_list comma timeout_spec optnl
4381 | timeout_spec optnl
4382 ;
4383
4384limit_spec : STRING NUMBER
4385 {
4386 if (check_rulestate(PFCTL_STATE_OPTION)) {
4387 free($1);
4388 YYERROR;
4389 }
4390 if ($2 < 0 || $2 > UINT_MAX) {
4391 yyerror("only positive values permitted");
4392 YYERROR;
4393 }
4394 if (pfctl_set_limit(pf, $1, $2) != 0) {
4395 yyerror("unable to set limit %s %u", $1, $2);
4396 free($1);
4397 YYERROR;
4398 }
4399 free($1);
4400 }
4401 ;
4402
4403limit_list : limit_list comma limit_spec optnl
4404 | limit_spec optnl
4405 ;
4406
4407comma : ','
4408 | /* empty */
4409 ;
4410
4411yesno : NO { $$ = 0; }
4412 | STRING {
4413 if (!strcmp($1, "yes"))
4414 $$ = 1;
4415 else {
4416 yyerror("invalid value '%s', expected 'yes' "
4417 "or 'no'", $1);
4418 free($1);
4419 YYERROR;
4420 }
4421 free($1);
4422 }
4423 ;
4424
4425unaryop : '=' { $$ = PF_OP_EQ; }
4426 | '!' '=' { $$ = PF_OP_NE; }
4427 | '<' '=' { $$ = PF_OP_LE; }
4428 | '<' { $$ = PF_OP_LT; }
4429 | '>' '=' { $$ = PF_OP_GE; }
4430 | '>' { $$ = PF_OP_GT; }
4431 ;
4432
4433%%
4434
4435int
4436yyerror(const char *fmt, ...)
4437{
4438 va_list ap;
4439
4440 file->errors++;
4441 va_start(ap, fmt);
4442 fprintf(stderr, "%s:%d: ", file->name, yylval.lineno);
4443 vfprintf(stderr, fmt, ap);
4444 fprintf(stderr, "\n");
4445 va_end(ap);
4446 return (0);
4447}
4448
4449int
4450disallow_table(struct node_host *h, const char *fmt)
4451{
4452 for (; h != NULL; h = h->next)
4453 if (h->addr.type == PF_ADDR_TABLE) {
4454 yyerror(fmt, h->addr.v.tblname);
4455 return (1);
4456 }
4457 return (0);
4458}
4459
4460int
4461disallow_urpf_failed(struct node_host *h, const char *fmt)
4462{
4463 for (; h != NULL; h = h->next)
4464 if (h->addr.type == PF_ADDR_URPFFAILED) {
4465 yyerror(fmt);
4466 return (1);
4467 }
4468 return (0);
4469}
4470
4471int
4472disallow_alias(struct node_host *h, const char *fmt)
4473{
4474 for (; h != NULL; h = h->next)
4475 if (DYNIF_MULTIADDR(h->addr)) {
4476 yyerror(fmt, h->addr.v.tblname);
4477 return (1);
4478 }
4479 return (0);
4480}
4481
4482int
4483rule_consistent(struct pf_rule *r, int anchor_call)
4484{
4485 int problems = 0;
4486
4487 switch (r->action) {
4488 case PF_PASS:
4489 case PF_DROP:
4490 case PF_SCRUB:
4491 case PF_NOSCRUB:
4492 problems = filter_consistent(r, anchor_call);
4493 break;
4494 case PF_NAT:
4495 case PF_NONAT:
4496 problems = nat_consistent(r);
4497 break;
4498 case PF_RDR:
4499 case PF_NORDR:
4500 problems = rdr_consistent(r);
4501 break;
4502 case PF_BINAT:
4503 case PF_NOBINAT:
4504 default:
4505 break;
4506 }
4507 return (problems);
4508}
4509
4510int
4511filter_consistent(struct pf_rule *r, int anchor_call)
4512{
4513 int problems = 0;
4514
4515 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP &&
4516 (r->src.port_op || r->dst.port_op)) {
4517 yyerror("port only applies to tcp/udp");
4518 problems++;
4519 }
4520 if (r->proto != IPPROTO_ICMP && r->proto != IPPROTO_ICMPV6 &&
4521 (r->type || r->code)) {
4522 yyerror("icmp-type/code only applies to icmp");
4523 problems++;
4524 }
4525 if (!r->af && (r->type || r->code)) {
4526 yyerror("must indicate address family with icmp-type/code");
4527 problems++;
4528 }
4529 if (r->overload_tblname[0] &&
4530 r->max_src_conn == 0 && r->max_src_conn_rate.seconds == 0) {
4531 yyerror("'overload' requires 'max-src-conn' "
4532 "or 'max-src-conn-rate'");
4533 problems++;
4534 }
4535 if ((r->proto == IPPROTO_ICMP && r->af == AF_INET6) ||
4536 (r->proto == IPPROTO_ICMPV6 && r->af == AF_INET)) {
4537 yyerror("proto %s doesn't match address family %s",
4538 r->proto == IPPROTO_ICMP ? "icmp" : "icmp6",
4539 r->af == AF_INET ? "inet" : "inet6");
4540 problems++;
4541 }
4542 if (r->allow_opts && r->action != PF_PASS) {
4543 yyerror("allow-opts can only be specified for pass rules");
4544 problems++;
4545 }
4546 if (r->rule_flag & PFRULE_FRAGMENT && (r->src.port_op ||
4547 r->dst.port_op || r->flagset || r->type || r->code)) {
4548 yyerror("fragments can be filtered only on IP header fields");
4549 problems++;
4550 }
4551 if (r->rule_flag & PFRULE_RETURNRST && r->proto != IPPROTO_TCP) {
4552 yyerror("return-rst can only be applied to TCP rules");
4553 problems++;
4554 }
4555 if (r->max_src_nodes && !(r->rule_flag & PFRULE_RULESRCTRACK)) {
4556 yyerror("max-src-nodes requires 'source-track rule'");
4557 problems++;
4558 }
4559 if (r->action == PF_DROP && r->keep_state) {
4560 yyerror("keep state on block rules doesn't make sense");
4561 problems++;
4562 }
4563 if (r->rule_flag & PFRULE_STATESLOPPY &&
4564 (r->keep_state == PF_STATE_MODULATE ||
4565 r->keep_state == PF_STATE_SYNPROXY)) {
4566 yyerror("sloppy state matching cannot be used with "
4567 "synproxy state or modulate state");
4568 problems++;
4569 }
4570 return (-problems);
4571}
4572
4573int
4574nat_consistent(struct pf_rule *r)
4575{
4576 return (0); /* yeah! */
4577}
4578
4579int
4580rdr_consistent(struct pf_rule *r)
4581{
4582 int problems = 0;
4583
4584 if (r->proto != IPPROTO_TCP && r->proto != IPPROTO_UDP) {
4585 if (r->src.port_op) {
4586 yyerror("src port only applies to tcp/udp");
4587 problems++;
4588 }
4589 if (r->dst.port_op) {
4590 yyerror("dst port only applies to tcp/udp");
4591 problems++;
4592 }
4593 if (r->rpool.proxy_port[0]) {
4594 yyerror("rpool port only applies to tcp/udp");
4595 problems++;
4596 }
4597 }
4598 if (r->dst.port_op &&
4599 r->dst.port_op != PF_OP_EQ && r->dst.port_op != PF_OP_RRG) {
4600 yyerror("invalid port operator for rdr destination port");
4601 problems++;
4602 }
4603 return (-problems);
4604}
4605
4606int
4607process_tabledef(char *name, struct table_opts *opts)
4608{
4609 struct pfr_buffer ab;
4610 struct node_tinit *ti;
4611
4612 bzero(&ab, sizeof(ab));
4613 ab.pfrb_type = PFRB_ADDRS;
4614 SIMPLEQ_FOREACH(ti, &opts->init_nodes, entries) {
4615 if (ti->file)
4616 if (pfr_buf_load(&ab, ti->file, 0, append_addr)) {
4617 if (errno)
4618 yyerror("cannot load \"%s\": %s",
4619 ti->file, strerror(errno));
4620 else
4621 yyerror("file \"%s\" contains bad data",
4622 ti->file);
4623 goto _error;
4624 }
4625 if (ti->host)
4626 if (append_addr_host(&ab, ti->host, 0, 0)) {
4627 yyerror("cannot create address buffer: %s",
4628 strerror(errno));
4629 goto _error;
4630 }
4631 }
4632 if (pf->opts & PF_OPT_VERBOSE)
4633 print_tabledef(name, opts->flags, opts->init_addr,
4634 &opts->init_nodes);
4635 if (!(pf->opts & PF_OPT_NOACTION) &&
4636 pfctl_define_table(name, opts->flags, opts->init_addr,
4637 pf->anchor->name, &ab, pf->anchor->ruleset.tticket)) {
4638 yyerror("cannot define table %s: %s", name,
4639 pfr_strerror(errno));
4640 goto _error;
4641 }
4642 pf->tdirty = 1;
4643 pfr_buf_clear(&ab);
4644 return (0);
4645_error:
4646 pfr_buf_clear(&ab);
4647 return (-1);
4648}
4649
4650struct keywords {
4651 const char *k_name;
4652 int k_val;
4653};
4654
4655/* macro gore, but you should've seen the prior indentation nightmare... */
4656
4657#define FREE_LIST(T,r) \
4658 do { \
4659 T *p, *node = r; \
4660 while (node != NULL) { \
4661 p = node; \
4662 node = node->next; \
4663 free(p); \
4664 } \
4665 } while (0)
4666
4667#define LOOP_THROUGH(T,n,r,C) \
4668 do { \
4669 T *n; \
4670 if (r == NULL) { \
4671 r = calloc(1, sizeof(T)); \
4672 if (r == NULL) \
4673 err(1, "LOOP: calloc"); \
4674 r->next = NULL; \
4675 } \
4676 n = r; \
4677 while (n != NULL) { \
4678 do { \
4679 C; \
4680 } while (0); \
4681 n = n->next; \
4682 } \
4683 } while (0)
4684
4685void
4686expand_label_str(char *label, size_t len, const char *srch, const char *repl)
4687{
4688 char *tmp;
4689 char *p, *q;
4690
4691 if ((tmp = calloc(1, len)) == NULL)
4692 err(1, "expand_label_str: calloc");
4693 p = q = label;
4694 while ((q = strstr(p, srch)) != NULL) {
4695 *q = '\0';
4696 if ((strlcat(tmp, p, len) >= len) ||
4697 (strlcat(tmp, repl, len) >= len))
4698 errx(1, "expand_label: label too long");
4699 q += strlen(srch);
4700 p = q;
4701 }
4702 if (strlcat(tmp, p, len) >= len)
4703 errx(1, "expand_label: label too long");
4704 strlcpy(label, tmp, len); /* always fits */
4705 free(tmp);
4706}
4707
4708void
4709expand_label_if(const char *name, char *label, size_t len, const char *ifname)
4710{
4711 if (strstr(label, name) != NULL) {
4712 if (!*ifname)
4713 expand_label_str(label, len, name, "any");
4714 else
4715 expand_label_str(label, len, name, ifname);
4716 }
4717}
4718
4719void
4720expand_label_addr(const char *name, char *label, size_t len, sa_family_t af,
4721 struct node_host *h)
4722{
4723 char tmp[64], tmp_not[66];
4724
4725 if (strstr(label, name) != NULL) {
4726 switch (h->addr.type) {
4727 case PF_ADDR_DYNIFTL:
4728 snprintf(tmp, sizeof(tmp), "(%s)", h->addr.v.ifname);
4729 break;
4730 case PF_ADDR_TABLE:
4731 snprintf(tmp, sizeof(tmp), "<%s>", h->addr.v.tblname);
4732 break;
4733 case PF_ADDR_NOROUTE:
4734 snprintf(tmp, sizeof(tmp), "no-route");
4735 break;
4736 case PF_ADDR_URPFFAILED:
4737 snprintf(tmp, sizeof(tmp), "urpf-failed");
4738 break;
4739 case PF_ADDR_ADDRMASK:
4740 if (!af || (PF_AZERO(&h->addr.v.a.addr, af) &&
4741 PF_AZERO(&h->addr.v.a.mask, af)))
4742 snprintf(tmp, sizeof(tmp), "any");
4743 else {
4744 char a[48];
4745 int bits;
4746
4747 if (inet_ntop(af, &h->addr.v.a.addr, a,
4748 sizeof(a)) == NULL)
4749 snprintf(tmp, sizeof(tmp), "?");
4750 else {
4751 bits = unmask(&h->addr.v.a.mask, af);
4752 if ((af == AF_INET && bits < 32) ||
4753 (af == AF_INET6 && bits < 128))
4754 snprintf(tmp, sizeof(tmp),
4755 "%s/%d", a, bits);
4756 else
4757 snprintf(tmp, sizeof(tmp),
4758 "%s", a);
4759 }
4760 }
4761 break;
4762 default:
4763 snprintf(tmp, sizeof(tmp), "?");
4764 break;
4765 }
4766
4767 if (h->not) {
4768 snprintf(tmp_not, sizeof(tmp_not), "! %s", tmp);
4769 expand_label_str(label, len, name, tmp_not);
4770 } else
4771 expand_label_str(label, len, name, tmp);
4772 }
4773}
4774
4775void
4776expand_label_port(const char *name, char *label, size_t len,
4777 struct node_port *port)
4778{
4779 char a1[6], a2[6], op[13] = "";
4780
4781 if (strstr(label, name) != NULL) {
4782 snprintf(a1, sizeof(a1), "%u", ntohs(port->port[0]));
4783 snprintf(a2, sizeof(a2), "%u", ntohs(port->port[1]));
4784 if (!port->op)
4785 ;
4786 else if (port->op == PF_OP_IRG)
4787 snprintf(op, sizeof(op), "%s><%s", a1, a2);
4788 else if (port->op == PF_OP_XRG)
4789 snprintf(op, sizeof(op), "%s<>%s", a1, a2);
4790 else if (port->op == PF_OP_EQ)
4791 snprintf(op, sizeof(op), "%s", a1);
4792 else if (port->op == PF_OP_NE)
4793 snprintf(op, sizeof(op), "!=%s", a1);
4794 else if (port->op == PF_OP_LT)
4795 snprintf(op, sizeof(op), "<%s", a1);
4796 else if (port->op == PF_OP_LE)
4797 snprintf(op, sizeof(op), "<=%s", a1);
4798 else if (port->op == PF_OP_GT)
4799 snprintf(op, sizeof(op), ">%s", a1);
4800 else if (port->op == PF_OP_GE)
4801 snprintf(op, sizeof(op), ">=%s", a1);
4802 expand_label_str(label, len, name, op);
4803 }
4804}
4805
4806void
4807expand_label_proto(const char *name, char *label, size_t len, u_int8_t proto)
4808{
4809 struct protoent *pe;
4810 char n[4];
4811
4812 if (strstr(label, name) != NULL) {
4813 pe = getprotobynumber(proto);
4814 if (pe != NULL)
4815 expand_label_str(label, len, name, pe->p_name);
4816 else {
4817 snprintf(n, sizeof(n), "%u", proto);
4818 expand_label_str(label, len, name, n);
4819 }
4820 }
4821}
4822
4823void
4824expand_label_nr(const char *name, char *label, size_t len)
4825{
4826 char n[11];
4827
4828 if (strstr(label, name) != NULL) {
4829 snprintf(n, sizeof(n), "%u", pf->anchor->match);
4830 expand_label_str(label, len, name, n);
4831 }
4832}
4833
4834void
4835expand_label(char *label, size_t len, const char *ifname, sa_family_t af,
4836 struct node_host *src_host, struct node_port *src_port,
4837 struct node_host *dst_host, struct node_port *dst_port,
4838 u_int8_t proto)
4839{
4840 expand_label_if("$if", label, len, ifname);
4841 expand_label_addr("$srcaddr", label, len, af, src_host);
4842 expand_label_addr("$dstaddr", label, len, af, dst_host);
4843 expand_label_port("$srcport", label, len, src_port);
4844 expand_label_port("$dstport", label, len, dst_port);
4845 expand_label_proto("$proto", label, len, proto);
4846 expand_label_nr("$nr", label, len);
4847}
4848
4849int
4850expand_altq(struct pf_altq *a, struct node_if *interfaces,
4851 struct node_queue *nqueues, struct node_queue_bw bwspec,
4852 struct node_queue_opt *opts)
4853{
4854 struct pf_altq pa, pb;
4855 char qname[PF_QNAME_SIZE];
4856 struct node_queue *n;
4857 struct node_queue_bw bw;
4858 int errs = 0;
4859
4860 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4861 FREE_LIST(struct node_if, interfaces);
|
4803 FREE_LIST(struct node_queue, nqueues);
| 4862 if (nqueues)
4863 FREE_LIST(struct node_queue, nqueues);
|
4804 return (0);
4805 }
4806
4807 LOOP_THROUGH(struct node_if, interface, interfaces,
4808 memcpy(&pa, a, sizeof(struct pf_altq));
4809 if (strlcpy(pa.ifname, interface->ifname,
4810 sizeof(pa.ifname)) >= sizeof(pa.ifname))
4811 errx(1, "expand_altq: strlcpy");
4812
4813 if (interface->not) {
4814 yyerror("altq on ! <interface> is not supported");
4815 errs++;
4816 } else {
4817 if (eval_pfaltq(pf, &pa, &bwspec, opts))
4818 errs++;
4819 else
4820 if (pfctl_add_altq(pf, &pa))
4821 errs++;
4822
4823 if (pf->opts & PF_OPT_VERBOSE) {
4824 print_altq(&pf->paltq->altq, 0,
4825 &bwspec, opts);
4826 if (nqueues && nqueues->tail) {
4827 printf("queue { ");
4828 LOOP_THROUGH(struct node_queue, queue,
4829 nqueues,
4830 printf("%s ",
4831 queue->queue);
4832 );
4833 printf("}");
4834 }
4835 printf("\n");
4836 }
4837
4838 if (pa.scheduler == ALTQT_CBQ ||
4839 pa.scheduler == ALTQT_HFSC) {
4840 /* now create a root queue */
4841 memset(&pb, 0, sizeof(struct pf_altq));
4842 if (strlcpy(qname, "root_", sizeof(qname)) >=
4843 sizeof(qname))
4844 errx(1, "expand_altq: strlcpy");
4845 if (strlcat(qname, interface->ifname,
4846 sizeof(qname)) >= sizeof(qname))
4847 errx(1, "expand_altq: strlcat");
4848 if (strlcpy(pb.qname, qname,
4849 sizeof(pb.qname)) >= sizeof(pb.qname))
4850 errx(1, "expand_altq: strlcpy");
4851 if (strlcpy(pb.ifname, interface->ifname,
4852 sizeof(pb.ifname)) >= sizeof(pb.ifname))
4853 errx(1, "expand_altq: strlcpy");
4854 pb.qlimit = pa.qlimit;
4855 pb.scheduler = pa.scheduler;
4856 bw.bw_absolute = pa.ifbandwidth;
4857 bw.bw_percent = 0;
4858 if (eval_pfqueue(pf, &pb, &bw, opts))
4859 errs++;
4860 else
4861 if (pfctl_add_altq(pf, &pb))
4862 errs++;
4863 }
4864
4865 LOOP_THROUGH(struct node_queue, queue, nqueues,
4866 n = calloc(1, sizeof(struct node_queue));
4867 if (n == NULL)
4868 err(1, "expand_altq: calloc");
4869 if (pa.scheduler == ALTQT_CBQ ||
4870 pa.scheduler == ALTQT_HFSC)
4871 if (strlcpy(n->parent, qname,
4872 sizeof(n->parent)) >=
4873 sizeof(n->parent))
4874 errx(1, "expand_altq: strlcpy");
4875 if (strlcpy(n->queue, queue->queue,
4876 sizeof(n->queue)) >= sizeof(n->queue))
4877 errx(1, "expand_altq: strlcpy");
4878 if (strlcpy(n->ifname, interface->ifname,
4879 sizeof(n->ifname)) >= sizeof(n->ifname))
4880 errx(1, "expand_altq: strlcpy");
4881 n->scheduler = pa.scheduler;
4882 n->next = NULL;
4883 n->tail = n;
4884 if (queues == NULL)
4885 queues = n;
4886 else {
4887 queues->tail->next = n;
4888 queues->tail = n;
4889 }
4890 );
4891 }
4892 );
4893 FREE_LIST(struct node_if, interfaces);
| 4864 return (0);
4865 }
4866
4867 LOOP_THROUGH(struct node_if, interface, interfaces,
4868 memcpy(&pa, a, sizeof(struct pf_altq));
4869 if (strlcpy(pa.ifname, interface->ifname,
4870 sizeof(pa.ifname)) >= sizeof(pa.ifname))
4871 errx(1, "expand_altq: strlcpy");
4872
4873 if (interface->not) {
4874 yyerror("altq on ! <interface> is not supported");
4875 errs++;
4876 } else {
4877 if (eval_pfaltq(pf, &pa, &bwspec, opts))
4878 errs++;
4879 else
4880 if (pfctl_add_altq(pf, &pa))
4881 errs++;
4882
4883 if (pf->opts & PF_OPT_VERBOSE) {
4884 print_altq(&pf->paltq->altq, 0,
4885 &bwspec, opts);
4886 if (nqueues && nqueues->tail) {
4887 printf("queue { ");
4888 LOOP_THROUGH(struct node_queue, queue,
4889 nqueues,
4890 printf("%s ",
4891 queue->queue);
4892 );
4893 printf("}");
4894 }
4895 printf("\n");
4896 }
4897
4898 if (pa.scheduler == ALTQT_CBQ ||
4899 pa.scheduler == ALTQT_HFSC) {
4900 /* now create a root queue */
4901 memset(&pb, 0, sizeof(struct pf_altq));
4902 if (strlcpy(qname, "root_", sizeof(qname)) >=
4903 sizeof(qname))
4904 errx(1, "expand_altq: strlcpy");
4905 if (strlcat(qname, interface->ifname,
4906 sizeof(qname)) >= sizeof(qname))
4907 errx(1, "expand_altq: strlcat");
4908 if (strlcpy(pb.qname, qname,
4909 sizeof(pb.qname)) >= sizeof(pb.qname))
4910 errx(1, "expand_altq: strlcpy");
4911 if (strlcpy(pb.ifname, interface->ifname,
4912 sizeof(pb.ifname)) >= sizeof(pb.ifname))
4913 errx(1, "expand_altq: strlcpy");
4914 pb.qlimit = pa.qlimit;
4915 pb.scheduler = pa.scheduler;
4916 bw.bw_absolute = pa.ifbandwidth;
4917 bw.bw_percent = 0;
4918 if (eval_pfqueue(pf, &pb, &bw, opts))
4919 errs++;
4920 else
4921 if (pfctl_add_altq(pf, &pb))
4922 errs++;
4923 }
4924
4925 LOOP_THROUGH(struct node_queue, queue, nqueues,
4926 n = calloc(1, sizeof(struct node_queue));
4927 if (n == NULL)
4928 err(1, "expand_altq: calloc");
4929 if (pa.scheduler == ALTQT_CBQ ||
4930 pa.scheduler == ALTQT_HFSC)
4931 if (strlcpy(n->parent, qname,
4932 sizeof(n->parent)) >=
4933 sizeof(n->parent))
4934 errx(1, "expand_altq: strlcpy");
4935 if (strlcpy(n->queue, queue->queue,
4936 sizeof(n->queue)) >= sizeof(n->queue))
4937 errx(1, "expand_altq: strlcpy");
4938 if (strlcpy(n->ifname, interface->ifname,
4939 sizeof(n->ifname)) >= sizeof(n->ifname))
4940 errx(1, "expand_altq: strlcpy");
4941 n->scheduler = pa.scheduler;
4942 n->next = NULL;
4943 n->tail = n;
4944 if (queues == NULL)
4945 queues = n;
4946 else {
4947 queues->tail->next = n;
4948 queues->tail = n;
4949 }
4950 );
4951 }
4952 );
4953 FREE_LIST(struct node_if, interfaces);
|
4894 FREE_LIST(struct node_queue, nqueues);
| 4954 if (nqueues)
4955 FREE_LIST(struct node_queue, nqueues);
|
4895
4896 return (errs);
4897}
4898
4899int
4900expand_queue(struct pf_altq *a, struct node_if *interfaces,
4901 struct node_queue *nqueues, struct node_queue_bw bwspec,
4902 struct node_queue_opt *opts)
4903{
4904 struct node_queue *n, *nq;
4905 struct pf_altq pa;
4906 u_int8_t found = 0;
4907 u_int8_t errs = 0;
4908
4909 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4910 FREE_LIST(struct node_queue, nqueues);
4911 return (0);
4912 }
4913
4914 if (queues == NULL) {
4915 yyerror("queue %s has no parent", a->qname);
4916 FREE_LIST(struct node_queue, nqueues);
4917 return (1);
4918 }
4919
4920 LOOP_THROUGH(struct node_if, interface, interfaces,
4921 LOOP_THROUGH(struct node_queue, tqueue, queues,
4922 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
4923 (interface->ifname[0] == 0 ||
4924 (!interface->not && !strncmp(interface->ifname,
4925 tqueue->ifname, IFNAMSIZ)) ||
4926 (interface->not && strncmp(interface->ifname,
4927 tqueue->ifname, IFNAMSIZ)))) {
4928 /* found ourself in queues */
4929 found++;
4930
4931 memcpy(&pa, a, sizeof(struct pf_altq));
4932
4933 if (pa.scheduler != ALTQT_NONE &&
4934 pa.scheduler != tqueue->scheduler) {
4935 yyerror("exactly one scheduler type "
4936 "per interface allowed");
4937 return (1);
4938 }
4939 pa.scheduler = tqueue->scheduler;
4940
4941 /* scheduler dependent error checking */
4942 switch (pa.scheduler) {
4943 case ALTQT_PRIQ:
4944 if (nqueues != NULL) {
4945 yyerror("priq queues cannot "
4946 "have child queues");
4947 return (1);
4948 }
4949 if (bwspec.bw_absolute > 0 ||
4950 bwspec.bw_percent < 100) {
4951 yyerror("priq doesn't take "
4952 "bandwidth");
4953 return (1);
4954 }
4955 break;
4956 default:
4957 break;
4958 }
4959
4960 if (strlcpy(pa.ifname, tqueue->ifname,
4961 sizeof(pa.ifname)) >= sizeof(pa.ifname))
4962 errx(1, "expand_queue: strlcpy");
4963 if (strlcpy(pa.parent, tqueue->parent,
4964 sizeof(pa.parent)) >= sizeof(pa.parent))
4965 errx(1, "expand_queue: strlcpy");
4966
4967 if (eval_pfqueue(pf, &pa, &bwspec, opts))
4968 errs++;
4969 else
4970 if (pfctl_add_altq(pf, &pa))
4971 errs++;
4972
4973 for (nq = nqueues; nq != NULL; nq = nq->next) {
4974 if (!strcmp(a->qname, nq->queue)) {
4975 yyerror("queue cannot have "
4976 "itself as child");
4977 errs++;
4978 continue;
4979 }
4980 n = calloc(1,
4981 sizeof(struct node_queue));
4982 if (n == NULL)
4983 err(1, "expand_queue: calloc");
4984 if (strlcpy(n->parent, a->qname,
4985 sizeof(n->parent)) >=
4986 sizeof(n->parent))
4987 errx(1, "expand_queue strlcpy");
4988 if (strlcpy(n->queue, nq->queue,
4989 sizeof(n->queue)) >=
4990 sizeof(n->queue))
4991 errx(1, "expand_queue strlcpy");
4992 if (strlcpy(n->ifname, tqueue->ifname,
4993 sizeof(n->ifname)) >=
4994 sizeof(n->ifname))
4995 errx(1, "expand_queue strlcpy");
4996 n->scheduler = tqueue->scheduler;
4997 n->next = NULL;
4998 n->tail = n;
4999 if (queues == NULL)
5000 queues = n;
5001 else {
5002 queues->tail->next = n;
5003 queues->tail = n;
5004 }
5005 }
5006 if ((pf->opts & PF_OPT_VERBOSE) && (
5007 (found == 1 && interface->ifname[0] == 0) ||
5008 (found > 0 && interface->ifname[0] != 0))) {
5009 print_queue(&pf->paltq->altq, 0,
5010 &bwspec, interface->ifname[0] != 0,
5011 opts);
5012 if (nqueues && nqueues->tail) {
5013 printf("{ ");
5014 LOOP_THROUGH(struct node_queue,
5015 queue, nqueues,
5016 printf("%s ",
5017 queue->queue);
5018 );
5019 printf("}");
5020 }
5021 printf("\n");
5022 }
5023 }
5024 );
5025 );
5026
5027 FREE_LIST(struct node_queue, nqueues);
5028 FREE_LIST(struct node_if, interfaces);
5029
5030 if (!found) {
5031 yyerror("queue %s has no parent", a->qname);
5032 errs++;
5033 }
5034
5035 if (errs)
5036 return (1);
5037 else
5038 return (0);
5039}
5040
5041void
5042expand_rule(struct pf_rule *r,
5043 struct node_if *interfaces, struct node_host *rpool_hosts,
5044 struct node_proto *protos, struct node_os *src_oses,
5045 struct node_host *src_hosts, struct node_port *src_ports,
5046 struct node_host *dst_hosts, struct node_port *dst_ports,
5047 struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
5048 const char *anchor_call)
5049{
5050 sa_family_t af = r->af;
5051 int added = 0, error = 0;
5052 char ifname[IF_NAMESIZE];
5053 char label[PF_RULE_LABEL_SIZE];
5054 char tagname[PF_TAG_NAME_SIZE];
5055 char match_tagname[PF_TAG_NAME_SIZE];
5056 struct pf_pooladdr *pa;
5057 struct node_host *h;
5058 u_int8_t flags, flagset, keep_state;
5059
5060 if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
5061 errx(1, "expand_rule: strlcpy");
5062 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
5063 errx(1, "expand_rule: strlcpy");
5064 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
5065 sizeof(match_tagname))
5066 errx(1, "expand_rule: strlcpy");
5067 flags = r->flags;
5068 flagset = r->flagset;
5069 keep_state = r->keep_state;
5070
5071 LOOP_THROUGH(struct node_if, interface, interfaces,
5072 LOOP_THROUGH(struct node_proto, proto, protos,
5073 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
5074 LOOP_THROUGH(struct node_host, src_host, src_hosts,
5075 LOOP_THROUGH(struct node_port, src_port, src_ports,
5076 LOOP_THROUGH(struct node_os, src_os, src_oses,
5077 LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
5078 LOOP_THROUGH(struct node_port, dst_port, dst_ports,
5079 LOOP_THROUGH(struct node_uid, uid, uids,
5080 LOOP_THROUGH(struct node_gid, gid, gids,
5081
5082 r->af = af;
5083 /* for link-local IPv6 address, interface must match up */
5084 if ((r->af && src_host->af && r->af != src_host->af) ||
5085 (r->af && dst_host->af && r->af != dst_host->af) ||
5086 (src_host->af && dst_host->af &&
5087 src_host->af != dst_host->af) ||
5088 (src_host->ifindex && dst_host->ifindex &&
5089 src_host->ifindex != dst_host->ifindex) ||
5090 (src_host->ifindex && *interface->ifname &&
5091 src_host->ifindex != if_nametoindex(interface->ifname)) ||
5092 (dst_host->ifindex && *interface->ifname &&
5093 dst_host->ifindex != if_nametoindex(interface->ifname)))
5094 continue;
5095 if (!r->af && src_host->af)
5096 r->af = src_host->af;
5097 else if (!r->af && dst_host->af)
5098 r->af = dst_host->af;
5099
5100 if (*interface->ifname)
5101 strlcpy(r->ifname, interface->ifname,
5102 sizeof(r->ifname));
5103 else if (if_indextoname(src_host->ifindex, ifname))
5104 strlcpy(r->ifname, ifname, sizeof(r->ifname));
5105 else if (if_indextoname(dst_host->ifindex, ifname))
5106 strlcpy(r->ifname, ifname, sizeof(r->ifname));
5107 else
5108 memset(r->ifname, '\0', sizeof(r->ifname));
5109
5110 if (strlcpy(r->label, label, sizeof(r->label)) >=
5111 sizeof(r->label))
5112 errx(1, "expand_rule: strlcpy");
5113 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
5114 sizeof(r->tagname))
5115 errx(1, "expand_rule: strlcpy");
5116 if (strlcpy(r->match_tagname, match_tagname,
5117 sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
5118 errx(1, "expand_rule: strlcpy");
5119 expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
5120 src_host, src_port, dst_host, dst_port, proto->proto);
5121 expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
5122 src_host, src_port, dst_host, dst_port, proto->proto);
5123 expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
5124 r->af, src_host, src_port, dst_host, dst_port,
5125 proto->proto);
5126
5127 error += check_netmask(src_host, r->af);
5128 error += check_netmask(dst_host, r->af);
5129
5130 r->ifnot = interface->not;
5131 r->proto = proto->proto;
5132 r->src.addr = src_host->addr;
5133 r->src.neg = src_host->not;
5134 r->src.port[0] = src_port->port[0];
5135 r->src.port[1] = src_port->port[1];
5136 r->src.port_op = src_port->op;
5137 r->dst.addr = dst_host->addr;
5138 r->dst.neg = dst_host->not;
5139 r->dst.port[0] = dst_port->port[0];
5140 r->dst.port[1] = dst_port->port[1];
5141 r->dst.port_op = dst_port->op;
5142 r->uid.op = uid->op;
5143 r->uid.uid[0] = uid->uid[0];
5144 r->uid.uid[1] = uid->uid[1];
5145 r->gid.op = gid->op;
5146 r->gid.gid[0] = gid->gid[0];
5147 r->gid.gid[1] = gid->gid[1];
5148 r->type = icmp_type->type;
5149 r->code = icmp_type->code;
5150
5151 if ((keep_state == PF_STATE_MODULATE ||
5152 keep_state == PF_STATE_SYNPROXY) &&
5153 r->proto && r->proto != IPPROTO_TCP)
5154 r->keep_state = PF_STATE_NORMAL;
5155 else
5156 r->keep_state = keep_state;
5157
5158 if (r->proto && r->proto != IPPROTO_TCP) {
5159 r->flags = 0;
5160 r->flagset = 0;
5161 } else {
5162 r->flags = flags;
5163 r->flagset = flagset;
5164 }
5165 if (icmp_type->proto && r->proto != icmp_type->proto) {
5166 yyerror("icmp-type mismatch");
5167 error++;
5168 }
5169
5170 if (src_os && src_os->os) {
5171 r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
5172 if ((pf->opts & PF_OPT_VERBOSE2) &&
5173 r->os_fingerprint == PF_OSFP_NOMATCH)
5174 fprintf(stderr,
5175 "warning: unknown '%s' OS fingerprint\n",
5176 src_os->os);
5177 } else {
5178 r->os_fingerprint = PF_OSFP_ANY;
5179 }
5180
5181 TAILQ_INIT(&r->rpool.list);
5182 for (h = rpool_hosts; h != NULL; h = h->next) {
5183 pa = calloc(1, sizeof(struct pf_pooladdr));
5184 if (pa == NULL)
5185 err(1, "expand_rule: calloc");
5186 pa->addr = h->addr;
5187 if (h->ifname != NULL) {
5188 if (strlcpy(pa->ifname, h->ifname,
5189 sizeof(pa->ifname)) >=
5190 sizeof(pa->ifname))
5191 errx(1, "expand_rule: strlcpy");
5192 } else
5193 pa->ifname[0] = 0;
5194 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
5195 }
5196
5197 if (rule_consistent(r, anchor_call[0]) < 0 || error)
5198 yyerror("skipping rule due to errors");
5199 else {
5200 r->nr = pf->astack[pf->asd]->match++;
5201 pfctl_add_rule(pf, r, anchor_call);
5202 added++;
5203 }
5204
5205 ))))))))));
5206
5207 FREE_LIST(struct node_if, interfaces);
5208 FREE_LIST(struct node_proto, protos);
5209 FREE_LIST(struct node_host, src_hosts);
5210 FREE_LIST(struct node_port, src_ports);
5211 FREE_LIST(struct node_os, src_oses);
5212 FREE_LIST(struct node_host, dst_hosts);
5213 FREE_LIST(struct node_port, dst_ports);
5214 FREE_LIST(struct node_uid, uids);
5215 FREE_LIST(struct node_gid, gids);
5216 FREE_LIST(struct node_icmp, icmp_types);
5217 FREE_LIST(struct node_host, rpool_hosts);
5218
5219 if (!added)
5220 yyerror("rule expands to no valid combination");
5221}
5222
5223int
5224expand_skip_interface(struct node_if *interfaces)
5225{
5226 int errs = 0;
5227
5228 if (!interfaces || (!interfaces->next && !interfaces->not &&
5229 !strcmp(interfaces->ifname, "none"))) {
5230 if (pf->opts & PF_OPT_VERBOSE)
5231 printf("set skip on none\n");
5232 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
5233 return (errs);
5234 }
5235
5236 if (pf->opts & PF_OPT_VERBOSE)
5237 printf("set skip on {");
5238 LOOP_THROUGH(struct node_if, interface, interfaces,
5239 if (pf->opts & PF_OPT_VERBOSE)
5240 printf(" %s", interface->ifname);
5241 if (interface->not) {
5242 yyerror("skip on ! <interface> is not supported");
5243 errs++;
5244 } else
5245 errs += pfctl_set_interface_flags(pf,
5246 interface->ifname, PFI_IFLAG_SKIP, 1);
5247 );
5248 if (pf->opts & PF_OPT_VERBOSE)
5249 printf(" }\n");
5250
5251 FREE_LIST(struct node_if, interfaces);
5252
5253 if (errs)
5254 return (1);
5255 else
5256 return (0);
5257}
5258
5259#undef FREE_LIST
5260#undef LOOP_THROUGH
5261
5262int
5263check_rulestate(int desired_state)
5264{
5265 if (require_order && (rulestate > desired_state)) {
5266 yyerror("Rules must be in order: options, normalization, "
5267 "queueing, translation, filtering");
5268 return (1);
5269 }
5270 rulestate = desired_state;
5271 return (0);
5272}
5273
5274int
5275kw_cmp(const void *k, const void *e)
5276{
5277 return (strcmp(k, ((const struct keywords *)e)->k_name));
5278}
5279
5280int
5281lookup(char *s)
5282{
5283 /* this has to be sorted always */
5284 static const struct keywords keywords[] = {
5285 { "all", ALL},
5286 { "allow-opts", ALLOWOPTS},
5287 { "altq", ALTQ},
5288 { "anchor", ANCHOR},
5289 { "antispoof", ANTISPOOF},
5290 { "any", ANY},
5291 { "bandwidth", BANDWIDTH},
5292 { "binat", BINAT},
5293 { "binat-anchor", BINATANCHOR},
5294 { "bitmask", BITMASK},
5295 { "block", BLOCK},
5296 { "block-policy", BLOCKPOLICY},
5297 { "buckets", BUCKETS},
5298 { "cbq", CBQ},
5299 { "code", CODE},
| 4956
4957 return (errs);
4958}
4959
4960int
4961expand_queue(struct pf_altq *a, struct node_if *interfaces,
4962 struct node_queue *nqueues, struct node_queue_bw bwspec,
4963 struct node_queue_opt *opts)
4964{
4965 struct node_queue *n, *nq;
4966 struct pf_altq pa;
4967 u_int8_t found = 0;
4968 u_int8_t errs = 0;
4969
4970 if ((pf->loadopt & PFCTL_FLAG_ALTQ) == 0) {
4971 FREE_LIST(struct node_queue, nqueues);
4972 return (0);
4973 }
4974
4975 if (queues == NULL) {
4976 yyerror("queue %s has no parent", a->qname);
4977 FREE_LIST(struct node_queue, nqueues);
4978 return (1);
4979 }
4980
4981 LOOP_THROUGH(struct node_if, interface, interfaces,
4982 LOOP_THROUGH(struct node_queue, tqueue, queues,
4983 if (!strncmp(a->qname, tqueue->queue, PF_QNAME_SIZE) &&
4984 (interface->ifname[0] == 0 ||
4985 (!interface->not && !strncmp(interface->ifname,
4986 tqueue->ifname, IFNAMSIZ)) ||
4987 (interface->not && strncmp(interface->ifname,
4988 tqueue->ifname, IFNAMSIZ)))) {
4989 /* found ourself in queues */
4990 found++;
4991
4992 memcpy(&pa, a, sizeof(struct pf_altq));
4993
4994 if (pa.scheduler != ALTQT_NONE &&
4995 pa.scheduler != tqueue->scheduler) {
4996 yyerror("exactly one scheduler type "
4997 "per interface allowed");
4998 return (1);
4999 }
5000 pa.scheduler = tqueue->scheduler;
5001
5002 /* scheduler dependent error checking */
5003 switch (pa.scheduler) {
5004 case ALTQT_PRIQ:
5005 if (nqueues != NULL) {
5006 yyerror("priq queues cannot "
5007 "have child queues");
5008 return (1);
5009 }
5010 if (bwspec.bw_absolute > 0 ||
5011 bwspec.bw_percent < 100) {
5012 yyerror("priq doesn't take "
5013 "bandwidth");
5014 return (1);
5015 }
5016 break;
5017 default:
5018 break;
5019 }
5020
5021 if (strlcpy(pa.ifname, tqueue->ifname,
5022 sizeof(pa.ifname)) >= sizeof(pa.ifname))
5023 errx(1, "expand_queue: strlcpy");
5024 if (strlcpy(pa.parent, tqueue->parent,
5025 sizeof(pa.parent)) >= sizeof(pa.parent))
5026 errx(1, "expand_queue: strlcpy");
5027
5028 if (eval_pfqueue(pf, &pa, &bwspec, opts))
5029 errs++;
5030 else
5031 if (pfctl_add_altq(pf, &pa))
5032 errs++;
5033
5034 for (nq = nqueues; nq != NULL; nq = nq->next) {
5035 if (!strcmp(a->qname, nq->queue)) {
5036 yyerror("queue cannot have "
5037 "itself as child");
5038 errs++;
5039 continue;
5040 }
5041 n = calloc(1,
5042 sizeof(struct node_queue));
5043 if (n == NULL)
5044 err(1, "expand_queue: calloc");
5045 if (strlcpy(n->parent, a->qname,
5046 sizeof(n->parent)) >=
5047 sizeof(n->parent))
5048 errx(1, "expand_queue strlcpy");
5049 if (strlcpy(n->queue, nq->queue,
5050 sizeof(n->queue)) >=
5051 sizeof(n->queue))
5052 errx(1, "expand_queue strlcpy");
5053 if (strlcpy(n->ifname, tqueue->ifname,
5054 sizeof(n->ifname)) >=
5055 sizeof(n->ifname))
5056 errx(1, "expand_queue strlcpy");
5057 n->scheduler = tqueue->scheduler;
5058 n->next = NULL;
5059 n->tail = n;
5060 if (queues == NULL)
5061 queues = n;
5062 else {
5063 queues->tail->next = n;
5064 queues->tail = n;
5065 }
5066 }
5067 if ((pf->opts & PF_OPT_VERBOSE) && (
5068 (found == 1 && interface->ifname[0] == 0) ||
5069 (found > 0 && interface->ifname[0] != 0))) {
5070 print_queue(&pf->paltq->altq, 0,
5071 &bwspec, interface->ifname[0] != 0,
5072 opts);
5073 if (nqueues && nqueues->tail) {
5074 printf("{ ");
5075 LOOP_THROUGH(struct node_queue,
5076 queue, nqueues,
5077 printf("%s ",
5078 queue->queue);
5079 );
5080 printf("}");
5081 }
5082 printf("\n");
5083 }
5084 }
5085 );
5086 );
5087
5088 FREE_LIST(struct node_queue, nqueues);
5089 FREE_LIST(struct node_if, interfaces);
5090
5091 if (!found) {
5092 yyerror("queue %s has no parent", a->qname);
5093 errs++;
5094 }
5095
5096 if (errs)
5097 return (1);
5098 else
5099 return (0);
5100}
5101
5102void
5103expand_rule(struct pf_rule *r,
5104 struct node_if *interfaces, struct node_host *rpool_hosts,
5105 struct node_proto *protos, struct node_os *src_oses,
5106 struct node_host *src_hosts, struct node_port *src_ports,
5107 struct node_host *dst_hosts, struct node_port *dst_ports,
5108 struct node_uid *uids, struct node_gid *gids, struct node_icmp *icmp_types,
5109 const char *anchor_call)
5110{
5111 sa_family_t af = r->af;
5112 int added = 0, error = 0;
5113 char ifname[IF_NAMESIZE];
5114 char label[PF_RULE_LABEL_SIZE];
5115 char tagname[PF_TAG_NAME_SIZE];
5116 char match_tagname[PF_TAG_NAME_SIZE];
5117 struct pf_pooladdr *pa;
5118 struct node_host *h;
5119 u_int8_t flags, flagset, keep_state;
5120
5121 if (strlcpy(label, r->label, sizeof(label)) >= sizeof(label))
5122 errx(1, "expand_rule: strlcpy");
5123 if (strlcpy(tagname, r->tagname, sizeof(tagname)) >= sizeof(tagname))
5124 errx(1, "expand_rule: strlcpy");
5125 if (strlcpy(match_tagname, r->match_tagname, sizeof(match_tagname)) >=
5126 sizeof(match_tagname))
5127 errx(1, "expand_rule: strlcpy");
5128 flags = r->flags;
5129 flagset = r->flagset;
5130 keep_state = r->keep_state;
5131
5132 LOOP_THROUGH(struct node_if, interface, interfaces,
5133 LOOP_THROUGH(struct node_proto, proto, protos,
5134 LOOP_THROUGH(struct node_icmp, icmp_type, icmp_types,
5135 LOOP_THROUGH(struct node_host, src_host, src_hosts,
5136 LOOP_THROUGH(struct node_port, src_port, src_ports,
5137 LOOP_THROUGH(struct node_os, src_os, src_oses,
5138 LOOP_THROUGH(struct node_host, dst_host, dst_hosts,
5139 LOOP_THROUGH(struct node_port, dst_port, dst_ports,
5140 LOOP_THROUGH(struct node_uid, uid, uids,
5141 LOOP_THROUGH(struct node_gid, gid, gids,
5142
5143 r->af = af;
5144 /* for link-local IPv6 address, interface must match up */
5145 if ((r->af && src_host->af && r->af != src_host->af) ||
5146 (r->af && dst_host->af && r->af != dst_host->af) ||
5147 (src_host->af && dst_host->af &&
5148 src_host->af != dst_host->af) ||
5149 (src_host->ifindex && dst_host->ifindex &&
5150 src_host->ifindex != dst_host->ifindex) ||
5151 (src_host->ifindex && *interface->ifname &&
5152 src_host->ifindex != if_nametoindex(interface->ifname)) ||
5153 (dst_host->ifindex && *interface->ifname &&
5154 dst_host->ifindex != if_nametoindex(interface->ifname)))
5155 continue;
5156 if (!r->af && src_host->af)
5157 r->af = src_host->af;
5158 else if (!r->af && dst_host->af)
5159 r->af = dst_host->af;
5160
5161 if (*interface->ifname)
5162 strlcpy(r->ifname, interface->ifname,
5163 sizeof(r->ifname));
5164 else if (if_indextoname(src_host->ifindex, ifname))
5165 strlcpy(r->ifname, ifname, sizeof(r->ifname));
5166 else if (if_indextoname(dst_host->ifindex, ifname))
5167 strlcpy(r->ifname, ifname, sizeof(r->ifname));
5168 else
5169 memset(r->ifname, '\0', sizeof(r->ifname));
5170
5171 if (strlcpy(r->label, label, sizeof(r->label)) >=
5172 sizeof(r->label))
5173 errx(1, "expand_rule: strlcpy");
5174 if (strlcpy(r->tagname, tagname, sizeof(r->tagname)) >=
5175 sizeof(r->tagname))
5176 errx(1, "expand_rule: strlcpy");
5177 if (strlcpy(r->match_tagname, match_tagname,
5178 sizeof(r->match_tagname)) >= sizeof(r->match_tagname))
5179 errx(1, "expand_rule: strlcpy");
5180 expand_label(r->label, PF_RULE_LABEL_SIZE, r->ifname, r->af,
5181 src_host, src_port, dst_host, dst_port, proto->proto);
5182 expand_label(r->tagname, PF_TAG_NAME_SIZE, r->ifname, r->af,
5183 src_host, src_port, dst_host, dst_port, proto->proto);
5184 expand_label(r->match_tagname, PF_TAG_NAME_SIZE, r->ifname,
5185 r->af, src_host, src_port, dst_host, dst_port,
5186 proto->proto);
5187
5188 error += check_netmask(src_host, r->af);
5189 error += check_netmask(dst_host, r->af);
5190
5191 r->ifnot = interface->not;
5192 r->proto = proto->proto;
5193 r->src.addr = src_host->addr;
5194 r->src.neg = src_host->not;
5195 r->src.port[0] = src_port->port[0];
5196 r->src.port[1] = src_port->port[1];
5197 r->src.port_op = src_port->op;
5198 r->dst.addr = dst_host->addr;
5199 r->dst.neg = dst_host->not;
5200 r->dst.port[0] = dst_port->port[0];
5201 r->dst.port[1] = dst_port->port[1];
5202 r->dst.port_op = dst_port->op;
5203 r->uid.op = uid->op;
5204 r->uid.uid[0] = uid->uid[0];
5205 r->uid.uid[1] = uid->uid[1];
5206 r->gid.op = gid->op;
5207 r->gid.gid[0] = gid->gid[0];
5208 r->gid.gid[1] = gid->gid[1];
5209 r->type = icmp_type->type;
5210 r->code = icmp_type->code;
5211
5212 if ((keep_state == PF_STATE_MODULATE ||
5213 keep_state == PF_STATE_SYNPROXY) &&
5214 r->proto && r->proto != IPPROTO_TCP)
5215 r->keep_state = PF_STATE_NORMAL;
5216 else
5217 r->keep_state = keep_state;
5218
5219 if (r->proto && r->proto != IPPROTO_TCP) {
5220 r->flags = 0;
5221 r->flagset = 0;
5222 } else {
5223 r->flags = flags;
5224 r->flagset = flagset;
5225 }
5226 if (icmp_type->proto && r->proto != icmp_type->proto) {
5227 yyerror("icmp-type mismatch");
5228 error++;
5229 }
5230
5231 if (src_os && src_os->os) {
5232 r->os_fingerprint = pfctl_get_fingerprint(src_os->os);
5233 if ((pf->opts & PF_OPT_VERBOSE2) &&
5234 r->os_fingerprint == PF_OSFP_NOMATCH)
5235 fprintf(stderr,
5236 "warning: unknown '%s' OS fingerprint\n",
5237 src_os->os);
5238 } else {
5239 r->os_fingerprint = PF_OSFP_ANY;
5240 }
5241
5242 TAILQ_INIT(&r->rpool.list);
5243 for (h = rpool_hosts; h != NULL; h = h->next) {
5244 pa = calloc(1, sizeof(struct pf_pooladdr));
5245 if (pa == NULL)
5246 err(1, "expand_rule: calloc");
5247 pa->addr = h->addr;
5248 if (h->ifname != NULL) {
5249 if (strlcpy(pa->ifname, h->ifname,
5250 sizeof(pa->ifname)) >=
5251 sizeof(pa->ifname))
5252 errx(1, "expand_rule: strlcpy");
5253 } else
5254 pa->ifname[0] = 0;
5255 TAILQ_INSERT_TAIL(&r->rpool.list, pa, entries);
5256 }
5257
5258 if (rule_consistent(r, anchor_call[0]) < 0 || error)
5259 yyerror("skipping rule due to errors");
5260 else {
5261 r->nr = pf->astack[pf->asd]->match++;
5262 pfctl_add_rule(pf, r, anchor_call);
5263 added++;
5264 }
5265
5266 ))))))))));
5267
5268 FREE_LIST(struct node_if, interfaces);
5269 FREE_LIST(struct node_proto, protos);
5270 FREE_LIST(struct node_host, src_hosts);
5271 FREE_LIST(struct node_port, src_ports);
5272 FREE_LIST(struct node_os, src_oses);
5273 FREE_LIST(struct node_host, dst_hosts);
5274 FREE_LIST(struct node_port, dst_ports);
5275 FREE_LIST(struct node_uid, uids);
5276 FREE_LIST(struct node_gid, gids);
5277 FREE_LIST(struct node_icmp, icmp_types);
5278 FREE_LIST(struct node_host, rpool_hosts);
5279
5280 if (!added)
5281 yyerror("rule expands to no valid combination");
5282}
5283
5284int
5285expand_skip_interface(struct node_if *interfaces)
5286{
5287 int errs = 0;
5288
5289 if (!interfaces || (!interfaces->next && !interfaces->not &&
5290 !strcmp(interfaces->ifname, "none"))) {
5291 if (pf->opts & PF_OPT_VERBOSE)
5292 printf("set skip on none\n");
5293 errs = pfctl_set_interface_flags(pf, "", PFI_IFLAG_SKIP, 0);
5294 return (errs);
5295 }
5296
5297 if (pf->opts & PF_OPT_VERBOSE)
5298 printf("set skip on {");
5299 LOOP_THROUGH(struct node_if, interface, interfaces,
5300 if (pf->opts & PF_OPT_VERBOSE)
5301 printf(" %s", interface->ifname);
5302 if (interface->not) {
5303 yyerror("skip on ! <interface> is not supported");
5304 errs++;
5305 } else
5306 errs += pfctl_set_interface_flags(pf,
5307 interface->ifname, PFI_IFLAG_SKIP, 1);
5308 );
5309 if (pf->opts & PF_OPT_VERBOSE)
5310 printf(" }\n");
5311
5312 FREE_LIST(struct node_if, interfaces);
5313
5314 if (errs)
5315 return (1);
5316 else
5317 return (0);
5318}
5319
5320#undef FREE_LIST
5321#undef LOOP_THROUGH
5322
5323int
5324check_rulestate(int desired_state)
5325{
5326 if (require_order && (rulestate > desired_state)) {
5327 yyerror("Rules must be in order: options, normalization, "
5328 "queueing, translation, filtering");
5329 return (1);
5330 }
5331 rulestate = desired_state;
5332 return (0);
5333}
5334
5335int
5336kw_cmp(const void *k, const void *e)
5337{
5338 return (strcmp(k, ((const struct keywords *)e)->k_name));
5339}
5340
5341int
5342lookup(char *s)
5343{
5344 /* this has to be sorted always */
5345 static const struct keywords keywords[] = {
5346 { "all", ALL},
5347 { "allow-opts", ALLOWOPTS},
5348 { "altq", ALTQ},
5349 { "anchor", ANCHOR},
5350 { "antispoof", ANTISPOOF},
5351 { "any", ANY},
5352 { "bandwidth", BANDWIDTH},
5353 { "binat", BINAT},
5354 { "binat-anchor", BINATANCHOR},
5355 { "bitmask", BITMASK},
5356 { "block", BLOCK},
5357 { "block-policy", BLOCKPOLICY},
5358 { "buckets", BUCKETS},
5359 { "cbq", CBQ},
5360 { "code", CODE},
|
| 5361 { "codelq", CODEL},
|
5300 { "crop", FRAGCROP},
5301 { "debug", DEBUG},
5302 { "divert-reply", DIVERTREPLY},
5303 { "divert-to", DIVERTTO},
5304 { "drop", DROP},
5305 { "drop-ovl", FRAGDROP},
5306 { "dup-to", DUPTO},
5307 { "fairq", FAIRQ},
5308 { "fastroute", FASTROUTE},
5309 { "file", FILENAME},
5310 { "fingerprints", FINGERPRINTS},
5311 { "flags", FLAGS},
5312 { "floating", FLOATING},
5313 { "flush", FLUSH},
5314 { "for", FOR},
5315 { "fragment", FRAGMENT},
5316 { "from", FROM},
5317 { "global", GLOBAL},
5318 { "group", GROUP},
5319 { "hfsc", HFSC},
5320 { "hogs", HOGS},
5321 { "hostid", HOSTID},
5322 { "icmp-type", ICMPTYPE},
5323 { "icmp6-type", ICMP6TYPE},
5324 { "if-bound", IFBOUND},
5325 { "in", IN},
5326 { "include", INCLUDE},
5327 { "inet", INET},
5328 { "inet6", INET6},
| 5362 { "crop", FRAGCROP},
5363 { "debug", DEBUG},
5364 { "divert-reply", DIVERTREPLY},
5365 { "divert-to", DIVERTTO},
5366 { "drop", DROP},
5367 { "drop-ovl", FRAGDROP},
5368 { "dup-to", DUPTO},
5369 { "fairq", FAIRQ},
5370 { "fastroute", FASTROUTE},
5371 { "file", FILENAME},
5372 { "fingerprints", FINGERPRINTS},
5373 { "flags", FLAGS},
5374 { "floating", FLOATING},
5375 { "flush", FLUSH},
5376 { "for", FOR},
5377 { "fragment", FRAGMENT},
5378 { "from", FROM},
5379 { "global", GLOBAL},
5380 { "group", GROUP},
5381 { "hfsc", HFSC},
5382 { "hogs", HOGS},
5383 { "hostid", HOSTID},
5384 { "icmp-type", ICMPTYPE},
5385 { "icmp6-type", ICMP6TYPE},
5386 { "if-bound", IFBOUND},
5387 { "in", IN},
5388 { "include", INCLUDE},
5389 { "inet", INET},
5390 { "inet6", INET6},
|
| 5391 { "interval", INTERVAL},
|
5329 { "keep", KEEP},
5330 { "label", LABEL},
5331 { "limit", LIMIT},
5332 { "linkshare", LINKSHARE},
5333 { "load", LOAD},
5334 { "log", LOG},
5335 { "loginterface", LOGINTERFACE},
5336 { "max", MAXIMUM},
5337 { "max-mss", MAXMSS},
5338 { "max-src-conn", MAXSRCCONN},
5339 { "max-src-conn-rate", MAXSRCCONNRATE},
5340 { "max-src-nodes", MAXSRCNODES},
5341 { "max-src-states", MAXSRCSTATES},
5342 { "min-ttl", MINTTL},
5343 { "modulate", MODULATE},
5344 { "nat", NAT},
5345 { "nat-anchor", NATANCHOR},
5346 { "no", NO},
5347 { "no-df", NODF},
5348 { "no-route", NOROUTE},
5349 { "no-sync", NOSYNC},
5350 { "on", ON},
5351 { "optimization", OPTIMIZATION},
5352 { "os", OS},
5353 { "out", OUT},
5354 { "overload", OVERLOAD},
5355 { "pass", PASS},
5356 { "port", PORT},
5357 { "priority", PRIORITY},
5358 { "priq", PRIQ},
5359 { "probability", PROBABILITY},
5360 { "proto", PROTO},
5361 { "qlimit", QLIMIT},
5362 { "queue", QUEUE},
5363 { "quick", QUICK},
5364 { "random", RANDOM},
5365 { "random-id", RANDOMID},
5366 { "rdr", RDR},
5367 { "rdr-anchor", RDRANCHOR},
5368 { "realtime", REALTIME},
5369 { "reassemble", REASSEMBLE},
5370 { "reply-to", REPLYTO},
5371 { "require-order", REQUIREORDER},
5372 { "return", RETURN},
5373 { "return-icmp", RETURNICMP},
5374 { "return-icmp6", RETURNICMP6},
5375 { "return-rst", RETURNRST},
5376 { "round-robin", ROUNDROBIN},
5377 { "route", ROUTE},
5378 { "route-to", ROUTETO},
5379 { "rtable", RTABLE},
5380 { "rule", RULE},
5381 { "ruleset-optimization", RULESET_OPTIMIZATION},
5382 { "scrub", SCRUB},
5383 { "set", SET},
5384 { "set-tos", SETTOS},
5385 { "skip", SKIP},
5386 { "sloppy", SLOPPY},
5387 { "source-hash", SOURCEHASH},
5388 { "source-track", SOURCETRACK},
5389 { "state", STATE},
5390 { "state-defaults", STATEDEFAULTS},
5391 { "state-policy", STATEPOLICY},
5392 { "static-port", STATICPORT},
5393 { "sticky-address", STICKYADDRESS},
5394 { "synproxy", SYNPROXY},
5395 { "table", TABLE},
5396 { "tag", TAG},
5397 { "tagged", TAGGED},
| 5392 { "keep", KEEP},
5393 { "label", LABEL},
5394 { "limit", LIMIT},
5395 { "linkshare", LINKSHARE},
5396 { "load", LOAD},
5397 { "log", LOG},
5398 { "loginterface", LOGINTERFACE},
5399 { "max", MAXIMUM},
5400 { "max-mss", MAXMSS},
5401 { "max-src-conn", MAXSRCCONN},
5402 { "max-src-conn-rate", MAXSRCCONNRATE},
5403 { "max-src-nodes", MAXSRCNODES},
5404 { "max-src-states", MAXSRCSTATES},
5405 { "min-ttl", MINTTL},
5406 { "modulate", MODULATE},
5407 { "nat", NAT},
5408 { "nat-anchor", NATANCHOR},
5409 { "no", NO},
5410 { "no-df", NODF},
5411 { "no-route", NOROUTE},
5412 { "no-sync", NOSYNC},
5413 { "on", ON},
5414 { "optimization", OPTIMIZATION},
5415 { "os", OS},
5416 { "out", OUT},
5417 { "overload", OVERLOAD},
5418 { "pass", PASS},
5419 { "port", PORT},
5420 { "priority", PRIORITY},
5421 { "priq", PRIQ},
5422 { "probability", PROBABILITY},
5423 { "proto", PROTO},
5424 { "qlimit", QLIMIT},
5425 { "queue", QUEUE},
5426 { "quick", QUICK},
5427 { "random", RANDOM},
5428 { "random-id", RANDOMID},
5429 { "rdr", RDR},
5430 { "rdr-anchor", RDRANCHOR},
5431 { "realtime", REALTIME},
5432 { "reassemble", REASSEMBLE},
5433 { "reply-to", REPLYTO},
5434 { "require-order", REQUIREORDER},
5435 { "return", RETURN},
5436 { "return-icmp", RETURNICMP},
5437 { "return-icmp6", RETURNICMP6},
5438 { "return-rst", RETURNRST},
5439 { "round-robin", ROUNDROBIN},
5440 { "route", ROUTE},
5441 { "route-to", ROUTETO},
5442 { "rtable", RTABLE},
5443 { "rule", RULE},
5444 { "ruleset-optimization", RULESET_OPTIMIZATION},
5445 { "scrub", SCRUB},
5446 { "set", SET},
5447 { "set-tos", SETTOS},
5448 { "skip", SKIP},
5449 { "sloppy", SLOPPY},
5450 { "source-hash", SOURCEHASH},
5451 { "source-track", SOURCETRACK},
5452 { "state", STATE},
5453 { "state-defaults", STATEDEFAULTS},
5454 { "state-policy", STATEPOLICY},
5455 { "static-port", STATICPORT},
5456 { "sticky-address", STICKYADDRESS},
5457 { "synproxy", SYNPROXY},
5458 { "table", TABLE},
5459 { "tag", TAG},
5460 { "tagged", TAGGED},
|
| 5461 { "target", TARGET},
|
5398 { "tbrsize", TBRSIZE},
5399 { "timeout", TIMEOUT},
5400 { "to", TO},
5401 { "tos", TOS},
5402 { "ttl", TTL},
5403 { "upperlimit", UPPERLIMIT},
5404 { "urpf-failed", URPFFAILED},
5405 { "user", USER},
5406 };
5407 const struct keywords *p;
5408
5409 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
5410 sizeof(keywords[0]), kw_cmp);
5411
5412 if (p) {
5413 if (debug > 1)
5414 fprintf(stderr, "%s: %d\n", s, p->k_val);
5415 return (p->k_val);
5416 } else {
5417 if (debug > 1)
5418 fprintf(stderr, "string: %s\n", s);
5419 return (STRING);
5420 }
5421}
5422
5423#define MAXPUSHBACK 128
5424
5425char *parsebuf;
5426int parseindex;
5427char pushback_buffer[MAXPUSHBACK];
5428int pushback_index = 0;
5429
5430int
5431lgetc(int quotec)
5432{
5433 int c, next;
5434
5435 if (parsebuf) {
5436 /* Read character from the parsebuffer instead of input. */
5437 if (parseindex >= 0) {
5438 c = parsebuf[parseindex++];
5439 if (c != '\0')
5440 return (c);
5441 parsebuf = NULL;
5442 } else
5443 parseindex++;
5444 }
5445
5446 if (pushback_index)
5447 return (pushback_buffer[--pushback_index]);
5448
5449 if (quotec) {
5450 if ((c = getc(file->stream)) == EOF) {
5451 yyerror("reached end of file while parsing quoted string");
5452 if (popfile() == EOF)
5453 return (EOF);
5454 return (quotec);
5455 }
5456 return (c);
5457 }
5458
5459 while ((c = getc(file->stream)) == '\\') {
5460 next = getc(file->stream);
5461 if (next != '\n') {
5462 c = next;
5463 break;
5464 }
5465 yylval.lineno = file->lineno;
5466 file->lineno++;
5467 }
5468
5469 while (c == EOF) {
5470 if (popfile() == EOF)
5471 return (EOF);
5472 c = getc(file->stream);
5473 }
5474 return (c);
5475}
5476
5477int
5478lungetc(int c)
5479{
5480 if (c == EOF)
5481 return (EOF);
5482 if (parsebuf) {
5483 parseindex--;
5484 if (parseindex >= 0)
5485 return (c);
5486 }
5487 if (pushback_index < MAXPUSHBACK-1)
5488 return (pushback_buffer[pushback_index++] = c);
5489 else
5490 return (EOF);
5491}
5492
5493int
5494findeol(void)
5495{
5496 int c;
5497
5498 parsebuf = NULL;
5499
5500 /* skip to either EOF or the first real EOL */
5501 while (1) {
5502 if (pushback_index)
5503 c = pushback_buffer[--pushback_index];
5504 else
5505 c = lgetc(0);
5506 if (c == '\n') {
5507 file->lineno++;
5508 break;
5509 }
5510 if (c == EOF)
5511 break;
5512 }
5513 return (ERROR);
5514}
5515
5516int
5517yylex(void)
5518{
5519 char buf[8096];
5520 char *p, *val;
5521 int quotec, next, c;
5522 int token;
5523
5524top:
5525 p = buf;
5526 while ((c = lgetc(0)) == ' ' || c == '\t')
5527 ; /* nothing */
5528
5529 yylval.lineno = file->lineno;
5530 if (c == '#')
5531 while ((c = lgetc(0)) != '\n' && c != EOF)
5532 ; /* nothing */
5533 if (c == '$' && parsebuf == NULL) {
5534 while (1) {
5535 if ((c = lgetc(0)) == EOF)
5536 return (0);
5537
5538 if (p + 1 >= buf + sizeof(buf) - 1) {
5539 yyerror("string too long");
5540 return (findeol());
5541 }
5542 if (isalnum(c) || c == '_') {
5543 *p++ = (char)c;
5544 continue;
5545 }
5546 *p = '\0';
5547 lungetc(c);
5548 break;
5549 }
5550 val = symget(buf);
5551 if (val == NULL) {
5552 yyerror("macro '%s' not defined", buf);
5553 return (findeol());
5554 }
5555 parsebuf = val;
5556 parseindex = 0;
5557 goto top;
5558 }
5559
5560 switch (c) {
5561 case '\'':
5562 case '"':
5563 quotec = c;
5564 while (1) {
5565 if ((c = lgetc(quotec)) == EOF)
5566 return (0);
5567 if (c == '\n') {
5568 file->lineno++;
5569 continue;
5570 } else if (c == '\\') {
5571 if ((next = lgetc(quotec)) == EOF)
5572 return (0);
5573 if (next == quotec || c == ' ' || c == '\t')
5574 c = next;
5575 else if (next == '\n')
5576 continue;
5577 else
5578 lungetc(next);
5579 } else if (c == quotec) {
5580 *p = '\0';
5581 break;
5582 }
5583 if (p + 1 >= buf + sizeof(buf) - 1) {
5584 yyerror("string too long");
5585 return (findeol());
5586 }
5587 *p++ = (char)c;
5588 }
5589 yylval.v.string = strdup(buf);
5590 if (yylval.v.string == NULL)
5591 err(1, "yylex: strdup");
5592 return (STRING);
5593 case '<':
5594 next = lgetc(0);
5595 if (next == '>') {
5596 yylval.v.i = PF_OP_XRG;
5597 return (PORTBINARY);
5598 }
5599 lungetc(next);
5600 break;
5601 case '>':
5602 next = lgetc(0);
5603 if (next == '<') {
5604 yylval.v.i = PF_OP_IRG;
5605 return (PORTBINARY);
5606 }
5607 lungetc(next);
5608 break;
5609 case '-':
5610 next = lgetc(0);
5611 if (next == '>')
5612 return (ARROW);
5613 lungetc(next);
5614 break;
5615 }
5616
5617#define allowed_to_end_number(x) \
5618 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
5619
5620 if (c == '-' || isdigit(c)) {
5621 do {
5622 *p++ = c;
5623 if ((unsigned)(p-buf) >= sizeof(buf)) {
5624 yyerror("string too long");
5625 return (findeol());
5626 }
5627 } while ((c = lgetc(0)) != EOF && isdigit(c));
5628 lungetc(c);
5629 if (p == buf + 1 && buf[0] == '-')
5630 goto nodigits;
5631 if (c == EOF || allowed_to_end_number(c)) {
5632 const char *errstr = NULL;
5633
5634 *p = '\0';
5635 yylval.v.number = strtonum(buf, LLONG_MIN,
5636 LLONG_MAX, &errstr);
5637 if (errstr) {
5638 yyerror("\"%s\" invalid number: %s",
5639 buf, errstr);
5640 return (findeol());
5641 }
5642 return (NUMBER);
5643 } else {
5644nodigits:
5645 while (p > buf + 1)
5646 lungetc(*--p);
5647 c = *--p;
5648 if (c == '-')
5649 return (c);
5650 }
5651 }
5652
5653#define allowed_in_string(x) \
5654 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
5655 x != '{' && x != '}' && x != '<' && x != '>' && \
5656 x != '!' && x != '=' && x != '/' && x != '#' && \
5657 x != ','))
5658
5659 if (isalnum(c) || c == ':' || c == '_') {
5660 do {
5661 *p++ = c;
5662 if ((unsigned)(p-buf) >= sizeof(buf)) {
5663 yyerror("string too long");
5664 return (findeol());
5665 }
5666 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
5667 lungetc(c);
5668 *p = '\0';
5669 if ((token = lookup(buf)) == STRING)
5670 if ((yylval.v.string = strdup(buf)) == NULL)
5671 err(1, "yylex: strdup");
5672 return (token);
5673 }
5674 if (c == '\n') {
5675 yylval.lineno = file->lineno;
5676 file->lineno++;
5677 }
5678 if (c == EOF)
5679 return (0);
5680 return (c);
5681}
5682
5683int
5684check_file_secrecy(int fd, const char *fname)
5685{
5686 struct stat st;
5687
5688 if (fstat(fd, &st)) {
5689 warn("cannot stat %s", fname);
5690 return (-1);
5691 }
5692 if (st.st_uid != 0 && st.st_uid != getuid()) {
5693 warnx("%s: owner not root or current user", fname);
5694 return (-1);
5695 }
5696 if (st.st_mode & (S_IRWXG | S_IRWXO)) {
5697 warnx("%s: group/world readable/writeable", fname);
5698 return (-1);
5699 }
5700 return (0);
5701}
5702
5703struct file *
5704pushfile(const char *name, int secret)
5705{
5706 struct file *nfile;
5707
5708 if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
5709 (nfile->name = strdup(name)) == NULL) {
5710 warn("malloc");
5711 return (NULL);
5712 }
5713 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
5714 nfile->stream = stdin;
5715 free(nfile->name);
5716 if ((nfile->name = strdup("stdin")) == NULL) {
5717 warn("strdup");
5718 free(nfile);
5719 return (NULL);
5720 }
5721 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
5722 warn("%s", nfile->name);
5723 free(nfile->name);
5724 free(nfile);
5725 return (NULL);
5726 } else if (secret &&
5727 check_file_secrecy(fileno(nfile->stream), nfile->name)) {
5728 fclose(nfile->stream);
5729 free(nfile->name);
5730 free(nfile);
5731 return (NULL);
5732 }
5733 nfile->lineno = 1;
5734 TAILQ_INSERT_TAIL(&files, nfile, entry);
5735 return (nfile);
5736}
5737
5738int
5739popfile(void)
5740{
5741 struct file *prev;
5742
5743 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
5744 prev->errors += file->errors;
5745 TAILQ_REMOVE(&files, file, entry);
5746 fclose(file->stream);
5747 free(file->name);
5748 free(file);
5749 file = prev;
5750 return (0);
5751 }
5752 return (EOF);
5753}
5754
5755int
5756parse_config(char *filename, struct pfctl *xpf)
5757{
5758 int errors = 0;
5759 struct sym *sym;
5760
5761 pf = xpf;
5762 errors = 0;
5763 rulestate = PFCTL_STATE_NONE;
5764 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
5765 returnicmp6default =
5766 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
5767 blockpolicy = PFRULE_DROP;
5768 require_order = 1;
5769
5770 if ((file = pushfile(filename, 0)) == NULL) {
5771 warn("cannot open the main config file!");
5772 return (-1);
5773 }
5774
5775 yyparse();
5776 errors = file->errors;
5777 popfile();
5778
5779 /* Free macros and check which have not been used. */
5780 while ((sym = TAILQ_FIRST(&symhead))) {
5781 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
5782 fprintf(stderr, "warning: macro '%s' not "
5783 "used\n", sym->nam);
5784 free(sym->nam);
5785 free(sym->val);
5786 TAILQ_REMOVE(&symhead, sym, entry);
5787 free(sym);
5788 }
5789
5790 return (errors ? -1 : 0);
5791}
5792
5793int
5794symset(const char *nam, const char *val, int persist)
5795{
5796 struct sym *sym;
5797
5798 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
5799 sym = TAILQ_NEXT(sym, entry))
5800 ; /* nothing */
5801
5802 if (sym != NULL) {
5803 if (sym->persist == 1)
5804 return (0);
5805 else {
5806 free(sym->nam);
5807 free(sym->val);
5808 TAILQ_REMOVE(&symhead, sym, entry);
5809 free(sym);
5810 }
5811 }
5812 if ((sym = calloc(1, sizeof(*sym))) == NULL)
5813 return (-1);
5814
5815 sym->nam = strdup(nam);
5816 if (sym->nam == NULL) {
5817 free(sym);
5818 return (-1);
5819 }
5820 sym->val = strdup(val);
5821 if (sym->val == NULL) {
5822 free(sym->nam);
5823 free(sym);
5824 return (-1);
5825 }
5826 sym->used = 0;
5827 sym->persist = persist;
5828 TAILQ_INSERT_TAIL(&symhead, sym, entry);
5829 return (0);
5830}
5831
5832int
5833pfctl_cmdline_symset(char *s)
5834{
5835 char *sym, *val;
5836 int ret;
5837
5838 if ((val = strrchr(s, '=')) == NULL)
5839 return (-1);
5840
5841 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
5842 err(1, "pfctl_cmdline_symset: malloc");
5843
5844 strlcpy(sym, s, strlen(s) - strlen(val) + 1);
5845
5846 ret = symset(sym, val + 1, 1);
5847 free(sym);
5848
5849 return (ret);
5850}
5851
5852char *
5853symget(const char *nam)
5854{
5855 struct sym *sym;
5856
5857 TAILQ_FOREACH(sym, &symhead, entry)
5858 if (strcmp(nam, sym->nam) == 0) {
5859 sym->used = 1;
5860 return (sym->val);
5861 }
5862 return (NULL);
5863}
5864
5865void
5866mv_rules(struct pf_ruleset *src, struct pf_ruleset *dst)
5867{
5868 int i;
5869 struct pf_rule *r;
5870
5871 for (i = 0; i < PF_RULESET_MAX; ++i) {
5872 while ((r = TAILQ_FIRST(src->rules[i].active.ptr))
5873 != NULL) {
5874 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries);
5875 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries);
5876 dst->anchor->match++;
5877 }
5878 src->anchor->match = 0;
5879 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr))
5880 != NULL) {
5881 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries);
5882 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr,
5883 r, entries);
5884 }
5885 }
5886}
5887
5888void
5889decide_address_family(struct node_host *n, sa_family_t *af)
5890{
5891 if (*af != 0 || n == NULL)
5892 return;
5893 *af = n->af;
5894 while ((n = n->next) != NULL) {
5895 if (n->af != *af) {
5896 *af = 0;
5897 return;
5898 }
5899 }
5900}
5901
5902void
5903remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
5904{
5905 struct node_host *n = *nh, *prev = NULL;
5906
5907 while (n != NULL) {
5908 if (*af && n->af && n->af != *af) {
5909 /* unlink and free n */
5910 struct node_host *next = n->next;
5911
5912 /* adjust tail pointer */
5913 if (n == (*nh)->tail)
5914 (*nh)->tail = prev;
5915 /* adjust previous node's next pointer */
5916 if (prev == NULL)
5917 *nh = next;
5918 else
5919 prev->next = next;
5920 /* free node */
5921 if (n->ifname != NULL)
5922 free(n->ifname);
5923 free(n);
5924 n = next;
5925 } else {
5926 if (n->af && !*af)
5927 *af = n->af;
5928 prev = n;
5929 n = n->next;
5930 }
5931 }
5932}
5933
5934int
5935invalid_redirect(struct node_host *nh, sa_family_t af)
5936{
5937 if (!af) {
5938 struct node_host *n;
5939
5940 /* tables and dyniftl are ok without an address family */
5941 for (n = nh; n != NULL; n = n->next) {
5942 if (n->addr.type != PF_ADDR_TABLE &&
5943 n->addr.type != PF_ADDR_DYNIFTL) {
5944 yyerror("address family not given and "
5945 "translation address expands to multiple "
5946 "address families");
5947 return (1);
5948 }
5949 }
5950 }
5951 if (nh == NULL) {
5952 yyerror("no translation address with matching address family "
5953 "found.");
5954 return (1);
5955 }
5956 return (0);
5957}
5958
5959int
5960atoul(char *s, u_long *ulvalp)
5961{
5962 u_long ulval;
5963 char *ep;
5964
5965 errno = 0;
5966 ulval = strtoul(s, &ep, 0);
5967 if (s[0] == '\0' || *ep != '\0')
5968 return (-1);
5969 if (errno == ERANGE && ulval == ULONG_MAX)
5970 return (-1);
5971 *ulvalp = ulval;
5972 return (0);
5973}
5974
5975int
5976getservice(char *n)
5977{
5978 struct servent *s;
5979 u_long ulval;
5980
5981 if (atoul(n, &ulval) == 0) {
5982 if (ulval > 65535) {
5983 yyerror("illegal port value %lu", ulval);
5984 return (-1);
5985 }
5986 return (htons(ulval));
5987 } else {
5988 s = getservbyname(n, "tcp");
5989 if (s == NULL)
5990 s = getservbyname(n, "udp");
5991 if (s == NULL) {
5992 yyerror("unknown port %s", n);
5993 return (-1);
5994 }
5995 return (s->s_port);
5996 }
5997}
5998
5999int
6000rule_label(struct pf_rule *r, char *s)
6001{
6002 if (s) {
6003 if (strlcpy(r->label, s, sizeof(r->label)) >=
6004 sizeof(r->label)) {
6005 yyerror("rule label too long (max %d chars)",
6006 sizeof(r->label)-1);
6007 return (-1);
6008 }
6009 }
6010 return (0);
6011}
6012
6013u_int16_t
6014parseicmpspec(char *w, sa_family_t af)
6015{
6016 const struct icmpcodeent *p;
6017 u_long ulval;
6018 u_int8_t icmptype;
6019
6020 if (af == AF_INET)
6021 icmptype = returnicmpdefault >> 8;
6022 else
6023 icmptype = returnicmp6default >> 8;
6024
6025 if (atoul(w, &ulval) == -1) {
6026 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
6027 yyerror("unknown icmp code %s", w);
6028 return (0);
6029 }
6030 ulval = p->code;
6031 }
6032 if (ulval > 255) {
6033 yyerror("invalid icmp code %lu", ulval);
6034 return (0);
6035 }
6036 return (icmptype << 8 | ulval);
6037}
6038
6039int
6040parseport(char *port, struct range *r, int extensions)
6041{
6042 char *p = strchr(port, ':');
6043
6044 if (p == NULL) {
6045 if ((r->a = getservice(port)) == -1)
6046 return (-1);
6047 r->b = 0;
6048 r->t = PF_OP_NONE;
6049 return (0);
6050 }
6051 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
6052 *p = 0;
6053 if ((r->a = getservice(port)) == -1)
6054 return (-1);
6055 r->b = 0;
6056 r->t = PF_OP_IRG;
6057 return (0);
6058 }
6059 if ((extensions & PPORT_RANGE)) {
6060 *p++ = 0;
6061 if ((r->a = getservice(port)) == -1 ||
6062 (r->b = getservice(p)) == -1)
6063 return (-1);
6064 if (r->a == r->b) {
6065 r->b = 0;
6066 r->t = PF_OP_NONE;
6067 } else
6068 r->t = PF_OP_RRG;
6069 return (0);
6070 }
6071 return (-1);
6072}
6073
6074int
6075pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
6076{
6077 struct loadanchors *la;
6078
6079 TAILQ_FOREACH(la, &loadanchorshead, entries) {
6080 if (pf->opts & PF_OPT_VERBOSE)
6081 fprintf(stderr, "\nLoading anchor %s from %s\n",
6082 la->anchorname, la->filename);
6083 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
6084 la->anchorname, trans) == -1)
6085 return (-1);
6086 }
6087
6088 return (0);
6089}
6090
6091int
6092rt_tableid_max(void)
6093{
6094#ifdef __FreeBSD__
6095 int fibs;
6096 size_t l = sizeof(fibs);
6097
6098 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1)
6099 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */
6100 /*
6101 * As the OpenBSD code only compares > and not >= we need to adjust
6102 * here given we only accept values of 0..n and want to avoid #ifdefs
6103 * in the grammer.
6104 */
6105 return (fibs - 1);
6106#else
6107 return (RT_TABLEID_MAX);
6108#endif
6109}
| 5462 { "tbrsize", TBRSIZE},
5463 { "timeout", TIMEOUT},
5464 { "to", TO},
5465 { "tos", TOS},
5466 { "ttl", TTL},
5467 { "upperlimit", UPPERLIMIT},
5468 { "urpf-failed", URPFFAILED},
5469 { "user", USER},
5470 };
5471 const struct keywords *p;
5472
5473 p = bsearch(s, keywords, sizeof(keywords)/sizeof(keywords[0]),
5474 sizeof(keywords[0]), kw_cmp);
5475
5476 if (p) {
5477 if (debug > 1)
5478 fprintf(stderr, "%s: %d\n", s, p->k_val);
5479 return (p->k_val);
5480 } else {
5481 if (debug > 1)
5482 fprintf(stderr, "string: %s\n", s);
5483 return (STRING);
5484 }
5485}
5486
5487#define MAXPUSHBACK 128
5488
5489char *parsebuf;
5490int parseindex;
5491char pushback_buffer[MAXPUSHBACK];
5492int pushback_index = 0;
5493
5494int
5495lgetc(int quotec)
5496{
5497 int c, next;
5498
5499 if (parsebuf) {
5500 /* Read character from the parsebuffer instead of input. */
5501 if (parseindex >= 0) {
5502 c = parsebuf[parseindex++];
5503 if (c != '\0')
5504 return (c);
5505 parsebuf = NULL;
5506 } else
5507 parseindex++;
5508 }
5509
5510 if (pushback_index)
5511 return (pushback_buffer[--pushback_index]);
5512
5513 if (quotec) {
5514 if ((c = getc(file->stream)) == EOF) {
5515 yyerror("reached end of file while parsing quoted string");
5516 if (popfile() == EOF)
5517 return (EOF);
5518 return (quotec);
5519 }
5520 return (c);
5521 }
5522
5523 while ((c = getc(file->stream)) == '\\') {
5524 next = getc(file->stream);
5525 if (next != '\n') {
5526 c = next;
5527 break;
5528 }
5529 yylval.lineno = file->lineno;
5530 file->lineno++;
5531 }
5532
5533 while (c == EOF) {
5534 if (popfile() == EOF)
5535 return (EOF);
5536 c = getc(file->stream);
5537 }
5538 return (c);
5539}
5540
5541int
5542lungetc(int c)
5543{
5544 if (c == EOF)
5545 return (EOF);
5546 if (parsebuf) {
5547 parseindex--;
5548 if (parseindex >= 0)
5549 return (c);
5550 }
5551 if (pushback_index < MAXPUSHBACK-1)
5552 return (pushback_buffer[pushback_index++] = c);
5553 else
5554 return (EOF);
5555}
5556
5557int
5558findeol(void)
5559{
5560 int c;
5561
5562 parsebuf = NULL;
5563
5564 /* skip to either EOF or the first real EOL */
5565 while (1) {
5566 if (pushback_index)
5567 c = pushback_buffer[--pushback_index];
5568 else
5569 c = lgetc(0);
5570 if (c == '\n') {
5571 file->lineno++;
5572 break;
5573 }
5574 if (c == EOF)
5575 break;
5576 }
5577 return (ERROR);
5578}
5579
5580int
5581yylex(void)
5582{
5583 char buf[8096];
5584 char *p, *val;
5585 int quotec, next, c;
5586 int token;
5587
5588top:
5589 p = buf;
5590 while ((c = lgetc(0)) == ' ' || c == '\t')
5591 ; /* nothing */
5592
5593 yylval.lineno = file->lineno;
5594 if (c == '#')
5595 while ((c = lgetc(0)) != '\n' && c != EOF)
5596 ; /* nothing */
5597 if (c == '$' && parsebuf == NULL) {
5598 while (1) {
5599 if ((c = lgetc(0)) == EOF)
5600 return (0);
5601
5602 if (p + 1 >= buf + sizeof(buf) - 1) {
5603 yyerror("string too long");
5604 return (findeol());
5605 }
5606 if (isalnum(c) || c == '_') {
5607 *p++ = (char)c;
5608 continue;
5609 }
5610 *p = '\0';
5611 lungetc(c);
5612 break;
5613 }
5614 val = symget(buf);
5615 if (val == NULL) {
5616 yyerror("macro '%s' not defined", buf);
5617 return (findeol());
5618 }
5619 parsebuf = val;
5620 parseindex = 0;
5621 goto top;
5622 }
5623
5624 switch (c) {
5625 case '\'':
5626 case '"':
5627 quotec = c;
5628 while (1) {
5629 if ((c = lgetc(quotec)) == EOF)
5630 return (0);
5631 if (c == '\n') {
5632 file->lineno++;
5633 continue;
5634 } else if (c == '\\') {
5635 if ((next = lgetc(quotec)) == EOF)
5636 return (0);
5637 if (next == quotec || c == ' ' || c == '\t')
5638 c = next;
5639 else if (next == '\n')
5640 continue;
5641 else
5642 lungetc(next);
5643 } else if (c == quotec) {
5644 *p = '\0';
5645 break;
5646 }
5647 if (p + 1 >= buf + sizeof(buf) - 1) {
5648 yyerror("string too long");
5649 return (findeol());
5650 }
5651 *p++ = (char)c;
5652 }
5653 yylval.v.string = strdup(buf);
5654 if (yylval.v.string == NULL)
5655 err(1, "yylex: strdup");
5656 return (STRING);
5657 case '<':
5658 next = lgetc(0);
5659 if (next == '>') {
5660 yylval.v.i = PF_OP_XRG;
5661 return (PORTBINARY);
5662 }
5663 lungetc(next);
5664 break;
5665 case '>':
5666 next = lgetc(0);
5667 if (next == '<') {
5668 yylval.v.i = PF_OP_IRG;
5669 return (PORTBINARY);
5670 }
5671 lungetc(next);
5672 break;
5673 case '-':
5674 next = lgetc(0);
5675 if (next == '>')
5676 return (ARROW);
5677 lungetc(next);
5678 break;
5679 }
5680
5681#define allowed_to_end_number(x) \
5682 (isspace(x) || x == ')' || x ==',' || x == '/' || x == '}' || x == '=')
5683
5684 if (c == '-' || isdigit(c)) {
5685 do {
5686 *p++ = c;
5687 if ((unsigned)(p-buf) >= sizeof(buf)) {
5688 yyerror("string too long");
5689 return (findeol());
5690 }
5691 } while ((c = lgetc(0)) != EOF && isdigit(c));
5692 lungetc(c);
5693 if (p == buf + 1 && buf[0] == '-')
5694 goto nodigits;
5695 if (c == EOF || allowed_to_end_number(c)) {
5696 const char *errstr = NULL;
5697
5698 *p = '\0';
5699 yylval.v.number = strtonum(buf, LLONG_MIN,
5700 LLONG_MAX, &errstr);
5701 if (errstr) {
5702 yyerror("\"%s\" invalid number: %s",
5703 buf, errstr);
5704 return (findeol());
5705 }
5706 return (NUMBER);
5707 } else {
5708nodigits:
5709 while (p > buf + 1)
5710 lungetc(*--p);
5711 c = *--p;
5712 if (c == '-')
5713 return (c);
5714 }
5715 }
5716
5717#define allowed_in_string(x) \
5718 (isalnum(x) || (ispunct(x) && x != '(' && x != ')' && \
5719 x != '{' && x != '}' && x != '<' && x != '>' && \
5720 x != '!' && x != '=' && x != '/' && x != '#' && \
5721 x != ','))
5722
5723 if (isalnum(c) || c == ':' || c == '_') {
5724 do {
5725 *p++ = c;
5726 if ((unsigned)(p-buf) >= sizeof(buf)) {
5727 yyerror("string too long");
5728 return (findeol());
5729 }
5730 } while ((c = lgetc(0)) != EOF && (allowed_in_string(c)));
5731 lungetc(c);
5732 *p = '\0';
5733 if ((token = lookup(buf)) == STRING)
5734 if ((yylval.v.string = strdup(buf)) == NULL)
5735 err(1, "yylex: strdup");
5736 return (token);
5737 }
5738 if (c == '\n') {
5739 yylval.lineno = file->lineno;
5740 file->lineno++;
5741 }
5742 if (c == EOF)
5743 return (0);
5744 return (c);
5745}
5746
5747int
5748check_file_secrecy(int fd, const char *fname)
5749{
5750 struct stat st;
5751
5752 if (fstat(fd, &st)) {
5753 warn("cannot stat %s", fname);
5754 return (-1);
5755 }
5756 if (st.st_uid != 0 && st.st_uid != getuid()) {
5757 warnx("%s: owner not root or current user", fname);
5758 return (-1);
5759 }
5760 if (st.st_mode & (S_IRWXG | S_IRWXO)) {
5761 warnx("%s: group/world readable/writeable", fname);
5762 return (-1);
5763 }
5764 return (0);
5765}
5766
5767struct file *
5768pushfile(const char *name, int secret)
5769{
5770 struct file *nfile;
5771
5772 if ((nfile = calloc(1, sizeof(struct file))) == NULL ||
5773 (nfile->name = strdup(name)) == NULL) {
5774 warn("malloc");
5775 return (NULL);
5776 }
5777 if (TAILQ_FIRST(&files) == NULL && strcmp(nfile->name, "-") == 0) {
5778 nfile->stream = stdin;
5779 free(nfile->name);
5780 if ((nfile->name = strdup("stdin")) == NULL) {
5781 warn("strdup");
5782 free(nfile);
5783 return (NULL);
5784 }
5785 } else if ((nfile->stream = fopen(nfile->name, "r")) == NULL) {
5786 warn("%s", nfile->name);
5787 free(nfile->name);
5788 free(nfile);
5789 return (NULL);
5790 } else if (secret &&
5791 check_file_secrecy(fileno(nfile->stream), nfile->name)) {
5792 fclose(nfile->stream);
5793 free(nfile->name);
5794 free(nfile);
5795 return (NULL);
5796 }
5797 nfile->lineno = 1;
5798 TAILQ_INSERT_TAIL(&files, nfile, entry);
5799 return (nfile);
5800}
5801
5802int
5803popfile(void)
5804{
5805 struct file *prev;
5806
5807 if ((prev = TAILQ_PREV(file, files, entry)) != NULL) {
5808 prev->errors += file->errors;
5809 TAILQ_REMOVE(&files, file, entry);
5810 fclose(file->stream);
5811 free(file->name);
5812 free(file);
5813 file = prev;
5814 return (0);
5815 }
5816 return (EOF);
5817}
5818
5819int
5820parse_config(char *filename, struct pfctl *xpf)
5821{
5822 int errors = 0;
5823 struct sym *sym;
5824
5825 pf = xpf;
5826 errors = 0;
5827 rulestate = PFCTL_STATE_NONE;
5828 returnicmpdefault = (ICMP_UNREACH << 8) | ICMP_UNREACH_PORT;
5829 returnicmp6default =
5830 (ICMP6_DST_UNREACH << 8) | ICMP6_DST_UNREACH_NOPORT;
5831 blockpolicy = PFRULE_DROP;
5832 require_order = 1;
5833
5834 if ((file = pushfile(filename, 0)) == NULL) {
5835 warn("cannot open the main config file!");
5836 return (-1);
5837 }
5838
5839 yyparse();
5840 errors = file->errors;
5841 popfile();
5842
5843 /* Free macros and check which have not been used. */
5844 while ((sym = TAILQ_FIRST(&symhead))) {
5845 if ((pf->opts & PF_OPT_VERBOSE2) && !sym->used)
5846 fprintf(stderr, "warning: macro '%s' not "
5847 "used\n", sym->nam);
5848 free(sym->nam);
5849 free(sym->val);
5850 TAILQ_REMOVE(&symhead, sym, entry);
5851 free(sym);
5852 }
5853
5854 return (errors ? -1 : 0);
5855}
5856
5857int
5858symset(const char *nam, const char *val, int persist)
5859{
5860 struct sym *sym;
5861
5862 for (sym = TAILQ_FIRST(&symhead); sym && strcmp(nam, sym->nam);
5863 sym = TAILQ_NEXT(sym, entry))
5864 ; /* nothing */
5865
5866 if (sym != NULL) {
5867 if (sym->persist == 1)
5868 return (0);
5869 else {
5870 free(sym->nam);
5871 free(sym->val);
5872 TAILQ_REMOVE(&symhead, sym, entry);
5873 free(sym);
5874 }
5875 }
5876 if ((sym = calloc(1, sizeof(*sym))) == NULL)
5877 return (-1);
5878
5879 sym->nam = strdup(nam);
5880 if (sym->nam == NULL) {
5881 free(sym);
5882 return (-1);
5883 }
5884 sym->val = strdup(val);
5885 if (sym->val == NULL) {
5886 free(sym->nam);
5887 free(sym);
5888 return (-1);
5889 }
5890 sym->used = 0;
5891 sym->persist = persist;
5892 TAILQ_INSERT_TAIL(&symhead, sym, entry);
5893 return (0);
5894}
5895
5896int
5897pfctl_cmdline_symset(char *s)
5898{
5899 char *sym, *val;
5900 int ret;
5901
5902 if ((val = strrchr(s, '=')) == NULL)
5903 return (-1);
5904
5905 if ((sym = malloc(strlen(s) - strlen(val) + 1)) == NULL)
5906 err(1, "pfctl_cmdline_symset: malloc");
5907
5908 strlcpy(sym, s, strlen(s) - strlen(val) + 1);
5909
5910 ret = symset(sym, val + 1, 1);
5911 free(sym);
5912
5913 return (ret);
5914}
5915
5916char *
5917symget(const char *nam)
5918{
5919 struct sym *sym;
5920
5921 TAILQ_FOREACH(sym, &symhead, entry)
5922 if (strcmp(nam, sym->nam) == 0) {
5923 sym->used = 1;
5924 return (sym->val);
5925 }
5926 return (NULL);
5927}
5928
5929void
5930mv_rules(struct pf_ruleset *src, struct pf_ruleset *dst)
5931{
5932 int i;
5933 struct pf_rule *r;
5934
5935 for (i = 0; i < PF_RULESET_MAX; ++i) {
5936 while ((r = TAILQ_FIRST(src->rules[i].active.ptr))
5937 != NULL) {
5938 TAILQ_REMOVE(src->rules[i].active.ptr, r, entries);
5939 TAILQ_INSERT_TAIL(dst->rules[i].active.ptr, r, entries);
5940 dst->anchor->match++;
5941 }
5942 src->anchor->match = 0;
5943 while ((r = TAILQ_FIRST(src->rules[i].inactive.ptr))
5944 != NULL) {
5945 TAILQ_REMOVE(src->rules[i].inactive.ptr, r, entries);
5946 TAILQ_INSERT_TAIL(dst->rules[i].inactive.ptr,
5947 r, entries);
5948 }
5949 }
5950}
5951
5952void
5953decide_address_family(struct node_host *n, sa_family_t *af)
5954{
5955 if (*af != 0 || n == NULL)
5956 return;
5957 *af = n->af;
5958 while ((n = n->next) != NULL) {
5959 if (n->af != *af) {
5960 *af = 0;
5961 return;
5962 }
5963 }
5964}
5965
5966void
5967remove_invalid_hosts(struct node_host **nh, sa_family_t *af)
5968{
5969 struct node_host *n = *nh, *prev = NULL;
5970
5971 while (n != NULL) {
5972 if (*af && n->af && n->af != *af) {
5973 /* unlink and free n */
5974 struct node_host *next = n->next;
5975
5976 /* adjust tail pointer */
5977 if (n == (*nh)->tail)
5978 (*nh)->tail = prev;
5979 /* adjust previous node's next pointer */
5980 if (prev == NULL)
5981 *nh = next;
5982 else
5983 prev->next = next;
5984 /* free node */
5985 if (n->ifname != NULL)
5986 free(n->ifname);
5987 free(n);
5988 n = next;
5989 } else {
5990 if (n->af && !*af)
5991 *af = n->af;
5992 prev = n;
5993 n = n->next;
5994 }
5995 }
5996}
5997
5998int
5999invalid_redirect(struct node_host *nh, sa_family_t af)
6000{
6001 if (!af) {
6002 struct node_host *n;
6003
6004 /* tables and dyniftl are ok without an address family */
6005 for (n = nh; n != NULL; n = n->next) {
6006 if (n->addr.type != PF_ADDR_TABLE &&
6007 n->addr.type != PF_ADDR_DYNIFTL) {
6008 yyerror("address family not given and "
6009 "translation address expands to multiple "
6010 "address families");
6011 return (1);
6012 }
6013 }
6014 }
6015 if (nh == NULL) {
6016 yyerror("no translation address with matching address family "
6017 "found.");
6018 return (1);
6019 }
6020 return (0);
6021}
6022
6023int
6024atoul(char *s, u_long *ulvalp)
6025{
6026 u_long ulval;
6027 char *ep;
6028
6029 errno = 0;
6030 ulval = strtoul(s, &ep, 0);
6031 if (s[0] == '\0' || *ep != '\0')
6032 return (-1);
6033 if (errno == ERANGE && ulval == ULONG_MAX)
6034 return (-1);
6035 *ulvalp = ulval;
6036 return (0);
6037}
6038
6039int
6040getservice(char *n)
6041{
6042 struct servent *s;
6043 u_long ulval;
6044
6045 if (atoul(n, &ulval) == 0) {
6046 if (ulval > 65535) {
6047 yyerror("illegal port value %lu", ulval);
6048 return (-1);
6049 }
6050 return (htons(ulval));
6051 } else {
6052 s = getservbyname(n, "tcp");
6053 if (s == NULL)
6054 s = getservbyname(n, "udp");
6055 if (s == NULL) {
6056 yyerror("unknown port %s", n);
6057 return (-1);
6058 }
6059 return (s->s_port);
6060 }
6061}
6062
6063int
6064rule_label(struct pf_rule *r, char *s)
6065{
6066 if (s) {
6067 if (strlcpy(r->label, s, sizeof(r->label)) >=
6068 sizeof(r->label)) {
6069 yyerror("rule label too long (max %d chars)",
6070 sizeof(r->label)-1);
6071 return (-1);
6072 }
6073 }
6074 return (0);
6075}
6076
6077u_int16_t
6078parseicmpspec(char *w, sa_family_t af)
6079{
6080 const struct icmpcodeent *p;
6081 u_long ulval;
6082 u_int8_t icmptype;
6083
6084 if (af == AF_INET)
6085 icmptype = returnicmpdefault >> 8;
6086 else
6087 icmptype = returnicmp6default >> 8;
6088
6089 if (atoul(w, &ulval) == -1) {
6090 if ((p = geticmpcodebyname(icmptype, w, af)) == NULL) {
6091 yyerror("unknown icmp code %s", w);
6092 return (0);
6093 }
6094 ulval = p->code;
6095 }
6096 if (ulval > 255) {
6097 yyerror("invalid icmp code %lu", ulval);
6098 return (0);
6099 }
6100 return (icmptype << 8 | ulval);
6101}
6102
6103int
6104parseport(char *port, struct range *r, int extensions)
6105{
6106 char *p = strchr(port, ':');
6107
6108 if (p == NULL) {
6109 if ((r->a = getservice(port)) == -1)
6110 return (-1);
6111 r->b = 0;
6112 r->t = PF_OP_NONE;
6113 return (0);
6114 }
6115 if ((extensions & PPORT_STAR) && !strcmp(p+1, "*")) {
6116 *p = 0;
6117 if ((r->a = getservice(port)) == -1)
6118 return (-1);
6119 r->b = 0;
6120 r->t = PF_OP_IRG;
6121 return (0);
6122 }
6123 if ((extensions & PPORT_RANGE)) {
6124 *p++ = 0;
6125 if ((r->a = getservice(port)) == -1 ||
6126 (r->b = getservice(p)) == -1)
6127 return (-1);
6128 if (r->a == r->b) {
6129 r->b = 0;
6130 r->t = PF_OP_NONE;
6131 } else
6132 r->t = PF_OP_RRG;
6133 return (0);
6134 }
6135 return (-1);
6136}
6137
6138int
6139pfctl_load_anchors(int dev, struct pfctl *pf, struct pfr_buffer *trans)
6140{
6141 struct loadanchors *la;
6142
6143 TAILQ_FOREACH(la, &loadanchorshead, entries) {
6144 if (pf->opts & PF_OPT_VERBOSE)
6145 fprintf(stderr, "\nLoading anchor %s from %s\n",
6146 la->anchorname, la->filename);
6147 if (pfctl_rules(dev, la->filename, pf->opts, pf->optimize,
6148 la->anchorname, trans) == -1)
6149 return (-1);
6150 }
6151
6152 return (0);
6153}
6154
6155int
6156rt_tableid_max(void)
6157{
6158#ifdef __FreeBSD__
6159 int fibs;
6160 size_t l = sizeof(fibs);
6161
6162 if (sysctlbyname("net.fibs", &fibs, &l, NULL, 0) == -1)
6163 fibs = 16; /* XXX RT_MAXFIBS, at least limit it some. */
6164 /*
6165 * As the OpenBSD code only compares > and not >= we need to adjust
6166 * here given we only accept values of 0..n and want to avoid #ifdefs
6167 * in the grammer.
6168 */
6169 return (fibs - 1);
6170#else
6171 return (RT_TABLEID_MAX);
6172#endif
6173}
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