1/*-
2 * Copyright (c) 2010 James Gritton
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2010 James Gritton
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
|
28__FBSDID("$FreeBSD: projects/jailconf/usr.sbin/jail/config.c 214649 2010-11-01 21:37:28Z jamie $");
| 28__FBSDID("$FreeBSD: projects/jailconf/usr.sbin/jail/config.c 214783 2010-11-04 17:01:21Z jamie $");
|
29
30#include <sys/types.h>
| 29
30#include <sys/types.h>
|
| 31#include <sys/errno.h>
|
31#include <sys/socket.h>
32#include <sys/sysctl.h>
33
34#include <arpa/inet.h>
35#include <netinet/in.h>
36
37#include <err.h>
38#include <netdb.h>
39#include <stdio.h>
40#include <stdlib.h>
41#include <string.h>
42
43#include "jailp.h"
44
45struct ipspec {
46 const char *name;
47 unsigned flags;
48};
49
50extern FILE *yyin;
51extern int yynerrs;
52
53struct cfjails cfjails = TAILQ_HEAD_INITIALIZER(cfjails);
54
55static void free_param(struct cfparams *pp, struct cfparam *p);
56static void free_param_strings(struct cfparam *p);
57
58static const struct ipspec intparams[] = {
59 [IP_ALLOW_DYING] = {"allow.dying", PF_INTERNAL | PF_BOOL},
60 [IP_COMMAND] = {"command", PF_INTERNAL},
61 [IP_DEPEND] = {"depend", PF_INTERNAL},
62 [IP_EXEC_CLEAN] = {"exec.clean", PF_INTERNAL | PF_BOOL},
63 [IP_EXEC_CONSOLELOG] = {"exec.consolelog", PF_INTERNAL},
64 [IP_EXEC_FIB] = {"exec.fib", PF_INTERNAL | PF_INT},
65 [IP_EXEC_JAIL_USER] = {"exec.jail_user", PF_INTERNAL},
66 [IP_EXEC_POSTSTART] = {"exec.poststart", PF_INTERNAL},
67 [IP_EXEC_POSTSTOP] = {"exec.poststop", PF_INTERNAL},
68 [IP_EXEC_PRESTART] = {"exec.prestart", PF_INTERNAL},
69 [IP_EXEC_PRESTOP] = {"exec.prestop", PF_INTERNAL},
70 [IP_EXEC_START] = {"exec.start", PF_INTERNAL},
71 [IP_EXEC_STOP] = {"exec.stop", PF_INTERNAL},
72 [IP_EXEC_SYSTEM_JAIL_USER]= {"exec.system_jail_user",
73 PF_INTERNAL | PF_BOOL},
74 [IP_EXEC_SYSTEM_USER] = {"exec.system_user", PF_INTERNAL},
75 [IP_EXEC_TIMEOUT] = {"exec.timeout", PF_INTERNAL | PF_INT},
76 [IP_INTERFACE] = {"interface", PF_INTERNAL},
77 [IP_IP_HOSTNAME] = {"ip_hostname", PF_INTERNAL | PF_BOOL},
78 [IP_MOUNT] = {"mount", PF_INTERNAL},
79 [IP_MOUNT_DEVFS] = {"mount.devfs", PF_INTERNAL | PF_BOOL},
80 [IP_MOUNT_DEVFS_RULESET]= {"mount.devfs.ruleset", PF_INTERNAL},
81 [IP_MOUNT_FSTAB] = {"mount.fstab", PF_INTERNAL},
82 [IP_STOP_TIMEOUT] = {"stop.timeout", PF_INTERNAL | PF_INT},
83 [IP_VNET_INTERFACE] = {"vnet.interface", PF_INTERNAL},
84 [IP__IP4_IFADDR] = {"ip4.addr", PF_INTERNAL | PF_CONV},
85#ifdef INET6
86 [IP__IP6_IFADDR] = {"ip6.addr", PF_INTERNAL | PF_CONV},
87#endif
| 32#include <sys/socket.h>
33#include <sys/sysctl.h>
34
35#include <arpa/inet.h>
36#include <netinet/in.h>
37
38#include <err.h>
39#include <netdb.h>
40#include <stdio.h>
41#include <stdlib.h>
42#include <string.h>
43
44#include "jailp.h"
45
46struct ipspec {
47 const char *name;
48 unsigned flags;
49};
50
51extern FILE *yyin;
52extern int yynerrs;
53
54struct cfjails cfjails = TAILQ_HEAD_INITIALIZER(cfjails);
55
56static void free_param(struct cfparams *pp, struct cfparam *p);
57static void free_param_strings(struct cfparam *p);
58
59static const struct ipspec intparams[] = {
60 [IP_ALLOW_DYING] = {"allow.dying", PF_INTERNAL | PF_BOOL},
61 [IP_COMMAND] = {"command", PF_INTERNAL},
62 [IP_DEPEND] = {"depend", PF_INTERNAL},
63 [IP_EXEC_CLEAN] = {"exec.clean", PF_INTERNAL | PF_BOOL},
64 [IP_EXEC_CONSOLELOG] = {"exec.consolelog", PF_INTERNAL},
65 [IP_EXEC_FIB] = {"exec.fib", PF_INTERNAL | PF_INT},
66 [IP_EXEC_JAIL_USER] = {"exec.jail_user", PF_INTERNAL},
67 [IP_EXEC_POSTSTART] = {"exec.poststart", PF_INTERNAL},
68 [IP_EXEC_POSTSTOP] = {"exec.poststop", PF_INTERNAL},
69 [IP_EXEC_PRESTART] = {"exec.prestart", PF_INTERNAL},
70 [IP_EXEC_PRESTOP] = {"exec.prestop", PF_INTERNAL},
71 [IP_EXEC_START] = {"exec.start", PF_INTERNAL},
72 [IP_EXEC_STOP] = {"exec.stop", PF_INTERNAL},
73 [IP_EXEC_SYSTEM_JAIL_USER]= {"exec.system_jail_user",
74 PF_INTERNAL | PF_BOOL},
75 [IP_EXEC_SYSTEM_USER] = {"exec.system_user", PF_INTERNAL},
76 [IP_EXEC_TIMEOUT] = {"exec.timeout", PF_INTERNAL | PF_INT},
77 [IP_INTERFACE] = {"interface", PF_INTERNAL},
78 [IP_IP_HOSTNAME] = {"ip_hostname", PF_INTERNAL | PF_BOOL},
79 [IP_MOUNT] = {"mount", PF_INTERNAL},
80 [IP_MOUNT_DEVFS] = {"mount.devfs", PF_INTERNAL | PF_BOOL},
81 [IP_MOUNT_DEVFS_RULESET]= {"mount.devfs.ruleset", PF_INTERNAL},
82 [IP_MOUNT_FSTAB] = {"mount.fstab", PF_INTERNAL},
83 [IP_STOP_TIMEOUT] = {"stop.timeout", PF_INTERNAL | PF_INT},
84 [IP_VNET_INTERFACE] = {"vnet.interface", PF_INTERNAL},
85 [IP__IP4_IFADDR] = {"ip4.addr", PF_INTERNAL | PF_CONV},
86#ifdef INET6
87 [IP__IP6_IFADDR] = {"ip6.addr", PF_INTERNAL | PF_CONV},
88#endif
|
| 89 [IP__MOUNT_FROM_FSTAB] = {"mount.fstab", PF_INTERNAL | PF_CONV},
|
88 [KP_ALLOW_CHFLAGS] = {"allow.chflags", 0},
89 [KP_ALLOW_MOUNT] = {"allow.mount", 0},
90 [KP_ALLOW_RAW_SOCKETS] = {"allow.raw_sockets", 0},
91 [KP_ALLOW_SET_HOSTNAME]= {"allow.set_hostname", 0},
92 [KP_ALLOW_SOCKET_AF] = {"allow.socket_af", 0},
93 [KP_ALLOW_SYSVIPC] = {"allow.sysvipc", 0},
94 [KP_ENFORCE_STATFS] = {"enforce_statfs", 0},
95 [KP_HOST_HOSTNAME] = {"host.hostname", 0},
96 [KP_IP4_ADDR] = {"ip4.addr", 0},
97#ifdef INET6
98 [KP_IP6_ADDR] = {"ip6.addr", 0},
99#endif
100 [KP_JID] = {"jid", 0},
101 [KP_NAME] = {"name", 0},
102 [KP_PATH] = {"path", 0},
103 [KP_PERSIST] = {"persist", 0},
104 [KP_SECURELEVEL] = {"securelevel", 0},
105 [KP_VNET] = {"vnet", 0},
106};
107
108/*
109 * Parse the jail configuration file.
110 */
111void
112load_config(void)
113{
114 struct cfjails wild;
115 struct cfparams opp;
116 struct cfjail *j, *tj, *wj;
117 struct cfparam *p, *vp, *tp;
118 struct cfstring *s, *vs, *ns;
119 struct cfvar *v;
120 char *ep;
121 size_t varoff;
122 int did_self, jseq, pgen;
123
124 if (!strcmp(cfname, "-")) {
125 cfname = "STDIN";
126 yyin = stdin;
127 } else {
128 yyin = fopen(cfname, "r");
129 if (!yyin)
130 err(1, "%s", cfname);
131 }
132 if (yyparse() || yynerrs)
133 exit(1);
134
135 /* Separate the wildcard jails out from the actual jails. */
136 jseq = 0;
137 TAILQ_INIT(&wild);
138 TAILQ_FOREACH_SAFE(j, &cfjails, tq, tj) {
139 j->seq = ++jseq;
140 if (wild_jail_name(j->name))
141 requeue(j, &wild);
142 }
143
144 TAILQ_FOREACH(j, &cfjails, tq) {
145 /* Set aside the jail's parameters. */
146 TAILQ_INIT(&opp);
147 TAILQ_CONCAT(&opp, &j->params, tq);
148 /*
149 * The jail name implies its "name" or "jid" parameter,
150 * though they may also be explicitly set later on.
151 */
152 add_param(j, NULL,
153 strtol(j->name, &ep, 10) && !*ep ? KP_JID : KP_NAME,
154 j->name);
155 /*
156 * Collect parameters for the jail, global parameters/variables,
157 * and any matching wildcard jails.
158 */
159 did_self = 0;
160 TAILQ_FOREACH(wj, &wild, tq) {
161 if (j->seq < wj->seq && !did_self) {
162 TAILQ_FOREACH(p, &opp, tq)
163 add_param(j, p, 0, NULL);
164 did_self = 1;
165 }
166 if (wild_jail_match(j->name, wj->name))
167 TAILQ_FOREACH(p, &wj->params, tq)
168 add_param(j, p, 0, NULL);
169 }
170 if (!did_self)
171 TAILQ_FOREACH(p, &opp, tq)
172 add_param(j, p, 0, NULL);
173
174 /* Resolve any variable substitutions. */
175 pgen = 0;
176 TAILQ_FOREACH(p, &j->params, tq) {
177 p->gen = ++pgen;
178 find_vars:
179 STAILQ_FOREACH(s, &p->val, tq) {
180 varoff = 0;
181 while ((v = STAILQ_FIRST(&s->vars))) {
182 TAILQ_FOREACH(vp, &j->params, tq)
183 if (!strcmp(vp->name, v->name))
184 break;
185 if (!vp) {
186 jail_warnx(j,
187 "%s: variable \"%s\" not found",
188 p->name, v->name);
189 bad_var:
190 j->flags |= JF_FAILED;
191 TAILQ_FOREACH(vp, &j->params, tq)
192 if (vp->gen == pgen)
193 vp->flags |= PF_BAD;
194 goto free_var;
195 }
196 if (vp->flags & PF_BAD)
197 goto bad_var;
198 if (vp->gen == pgen) {
199 jail_warnx(j, "%s: variable loop",
200 v->name);
201 goto bad_var;
202 }
203 STAILQ_FOREACH(vs, &vp->val, tq)
204 if (!STAILQ_EMPTY(&vs->vars)) {
205 vp->gen = pgen;
206 TAILQ_REMOVE(&j->params, vp,
207 tq);
208 TAILQ_INSERT_BEFORE(p, vp, tq);
209 p = vp;
210 goto find_vars;
211 }
212 vs = STAILQ_FIRST(&vp->val);
213 if (STAILQ_NEXT(vs, tq) != NULL &&
214 (s->s[0] != '\0' ||
215 STAILQ_NEXT(v, tq))) {
216 jail_warnx(j, "%s: array cannot be "
217 "substituted inline",
218 p->name);
219 goto bad_var;
220 }
221 s->s = erealloc(s->s, s->len + vs->len + 1);
222 memmove(s->s + v->pos + varoff + vs->len,
223 s->s + v->pos + varoff,
224 s->len - (v->pos + varoff) + 1);
225 memcpy(s->s + v->pos + varoff, vs->s, vs->len);
226 varoff += vs->len;
227 s->len += vs->len;
228 while ((vs = STAILQ_NEXT(vs, tq))) {
229 ns = emalloc(sizeof(struct cfstring));
230 ns->s = estrdup(vs->s);
231 ns->len = vs->len;
232 STAILQ_INIT(&ns->vars);
233 STAILQ_INSERT_AFTER(&p->val, s, ns, tq);
234 s = ns;
235 }
236 free_var:
237 free(v->name);
238 STAILQ_REMOVE_HEAD(&s->vars, tq);
239 free(v);
240 }
241 }
242 }
243
244 /* Free the jail's original parameter list and any variables. */
245 while ((p = TAILQ_FIRST(&opp)))
246 free_param(&opp, p);
247 TAILQ_FOREACH_SAFE(p, &j->params, tq, tp)
248 if (p->flags & PF_VAR)
249 free_param(&j->params, p);
250 }
251 while ((wj = TAILQ_FIRST(&wild))) {
252 free(wj->name);
253 while ((p = TAILQ_FIRST(&wj->params)))
254 free_param(&wj->params, p);
255 TAILQ_REMOVE(&wild, wj, tq);
256 }
257}
258
259/*
260 * Create a new jail record.
261 */
262struct cfjail *
263add_jail(void)
264{
265 struct cfjail *j;
266
267 j = emalloc(sizeof(struct cfjail));
268 memset(j, 0, sizeof(struct cfjail));
269 TAILQ_INIT(&j->params);
270 STAILQ_INIT(&j->dep[DEP_FROM]);
271 STAILQ_INIT(&j->dep[DEP_TO]);
272 j->queue = &cfjails;
273 TAILQ_INSERT_TAIL(&cfjails, j, tq);
274 return j;
275}
276
277/*
278 * Add a parameter to a jail.
279 */
280void
281add_param(struct cfjail *j, const struct cfparam *p, enum intparam ipnum,
282 const char *value)
283{
284 struct cfstrings nss;
285 struct cfparam *dp, *np;
286 struct cfstring *s, *ns;
287 struct cfvar *v, *nv;
288 struct ipspec *ips;
289 const char *name;
290 char *cs, *tname;
291 unsigned flags;
292
293 if (j == NULL) {
294 /* Create a single anonymous jail if one doesn't yet exist. */
295 j = TAILQ_LAST(&cfjails, cfjails);
296 if (j == NULL)
297 j = add_jail();
298 }
299 STAILQ_INIT(&nss);
300 if (p != NULL) {
301 name = p->name;
302 flags = p->flags;
303 /*
304 * Make a copy of the parameter's string list,
305 * which may be freed if it's overridden later.
306 */
307 STAILQ_FOREACH(s, &p->val, tq) {
308 ns = emalloc(sizeof(struct cfstring));
309 ns->s = estrdup(s->s);
310 ns->len = s->len;
311 STAILQ_INIT(&ns->vars);
312 STAILQ_FOREACH(v, &s->vars, tq) {
313 nv = emalloc(sizeof(struct cfvar));
314 nv->name = strdup(v->name);
315 nv->pos = v->pos;
316 STAILQ_INSERT_TAIL(&ns->vars, nv, tq);
317 }
318 STAILQ_INSERT_TAIL(&nss, ns, tq);
319 }
320 } else {
321 flags = PF_APPEND;
322 if (ipnum != 0) {
323 name = intparams[ipnum].name;
324 flags |= intparams[ipnum].flags;
325 } else if ((cs = strchr(value, '='))) {
326 tname = alloca(cs - value + 1);
327 strlcpy(tname, value, cs - value + 1);
328 name = tname;
329 value = cs + 1;
330 } else {
331 name = value;
332 value = NULL;
333 }
334 if (value != NULL) {
335 ns = emalloc(sizeof(struct cfstring));
336 ns->s = estrdup(value);
337 ns->len = strlen(value);
338 STAILQ_INIT(&ns->vars);
339 STAILQ_INSERT_TAIL(&nss, ns, tq);
340 }
341 }
342
343 /* See if this parameter has already been added. */
344 if (ipnum != 0)
345 dp = j->intparams[ipnum];
346 else
347 TAILQ_FOREACH(dp, &j->params, tq)
348 if (!(dp->flags & PF_CONV) && equalopts(dp->name, name))
349 break;
350 if (dp != NULL) {
351 /* Found it - append or replace. */
352 if (strcmp(dp->name, name)) {
353 free(dp->name);
354 dp->name = estrdup(name);
355 }
356 if (!(flags & PF_APPEND) || STAILQ_EMPTY(&nss))
357 free_param_strings(dp);
358 STAILQ_CONCAT(&dp->val, &nss);
359 dp->flags |= flags;
360 } else {
361 /* Not found - add it. */
362 np = emalloc(sizeof(struct cfparam));
363 np->name = estrdup(name);
364 STAILQ_INIT(&np->val);
365 STAILQ_CONCAT(&np->val, &nss);
366 np->flags = flags;
367 np->gen = 0;
368 TAILQ_INSERT_TAIL(&j->params, np, tq);
369 if (ipnum != 0)
370 j->intparams[ipnum] = np;
371 else
372 for (ipnum = 1; ipnum < IP_NPARAM; ipnum++)
373 if (!(intparams[ipnum].flags & PF_CONV) &&
374 equalopts(name, intparams[ipnum].name)) {
375 j->intparams[ipnum] = np;
376 np->flags |= intparams[ipnum].flags;
377 break;
378 }
379 }
380}
381
382/*
383 * Return if a boolean parameter exists and is true.
384 */
385int
386bool_param(const struct cfparam *p)
387{
388 const char *cs;
389
390 if (p == NULL)
391 return 0;
392 cs = strrchr(p->name, '.');
393 return !strncmp(cs ? cs + 1 : p->name, "no", 2) ^
394 (STAILQ_EMPTY(&p->val) ||
395 !strcasecmp(STAILQ_LAST(&p->val, cfstring, tq)->s, "true") ||
396 (strtol(STAILQ_LAST(&p->val, cfstring, tq)->s, NULL, 10)));
397}
398
399/*
400 * Set an integer if a parameter if it exists.
401 */
402int
403int_param(const struct cfparam *p, int *ip)
404{
405 if (p == NULL || STAILQ_EMPTY(&p->val))
406 return 0;
407 *ip = strtol(STAILQ_LAST(&p->val, cfstring, tq)->s, NULL, 10);
408 return 1;
409}
410
411/*
412 * Return the string value of a scalar parameter if it exists.
413 */
414const char *
415string_param(const struct cfparam *p)
416{
417 return (p && !STAILQ_EMPTY(&p->val)
418 ? STAILQ_LAST(&p->val, cfstring, tq)->s : NULL);
419}
420
421/*
422 * Check syntax and values of internal parameters. Set some internal
423 * parameters based on the values of others.
424 */
425int
426check_intparams(struct cfjail *j)
427{
428 struct in_addr addr4;
429 struct addrinfo hints;
430 struct addrinfo *ai0, *ai;
431 struct cfparam *p;
432 struct cfstring *s, *ns;
| 90 [KP_ALLOW_CHFLAGS] = {"allow.chflags", 0},
91 [KP_ALLOW_MOUNT] = {"allow.mount", 0},
92 [KP_ALLOW_RAW_SOCKETS] = {"allow.raw_sockets", 0},
93 [KP_ALLOW_SET_HOSTNAME]= {"allow.set_hostname", 0},
94 [KP_ALLOW_SOCKET_AF] = {"allow.socket_af", 0},
95 [KP_ALLOW_SYSVIPC] = {"allow.sysvipc", 0},
96 [KP_ENFORCE_STATFS] = {"enforce_statfs", 0},
97 [KP_HOST_HOSTNAME] = {"host.hostname", 0},
98 [KP_IP4_ADDR] = {"ip4.addr", 0},
99#ifdef INET6
100 [KP_IP6_ADDR] = {"ip6.addr", 0},
101#endif
102 [KP_JID] = {"jid", 0},
103 [KP_NAME] = {"name", 0},
104 [KP_PATH] = {"path", 0},
105 [KP_PERSIST] = {"persist", 0},
106 [KP_SECURELEVEL] = {"securelevel", 0},
107 [KP_VNET] = {"vnet", 0},
108};
109
110/*
111 * Parse the jail configuration file.
112 */
113void
114load_config(void)
115{
116 struct cfjails wild;
117 struct cfparams opp;
118 struct cfjail *j, *tj, *wj;
119 struct cfparam *p, *vp, *tp;
120 struct cfstring *s, *vs, *ns;
121 struct cfvar *v;
122 char *ep;
123 size_t varoff;
124 int did_self, jseq, pgen;
125
126 if (!strcmp(cfname, "-")) {
127 cfname = "STDIN";
128 yyin = stdin;
129 } else {
130 yyin = fopen(cfname, "r");
131 if (!yyin)
132 err(1, "%s", cfname);
133 }
134 if (yyparse() || yynerrs)
135 exit(1);
136
137 /* Separate the wildcard jails out from the actual jails. */
138 jseq = 0;
139 TAILQ_INIT(&wild);
140 TAILQ_FOREACH_SAFE(j, &cfjails, tq, tj) {
141 j->seq = ++jseq;
142 if (wild_jail_name(j->name))
143 requeue(j, &wild);
144 }
145
146 TAILQ_FOREACH(j, &cfjails, tq) {
147 /* Set aside the jail's parameters. */
148 TAILQ_INIT(&opp);
149 TAILQ_CONCAT(&opp, &j->params, tq);
150 /*
151 * The jail name implies its "name" or "jid" parameter,
152 * though they may also be explicitly set later on.
153 */
154 add_param(j, NULL,
155 strtol(j->name, &ep, 10) && !*ep ? KP_JID : KP_NAME,
156 j->name);
157 /*
158 * Collect parameters for the jail, global parameters/variables,
159 * and any matching wildcard jails.
160 */
161 did_self = 0;
162 TAILQ_FOREACH(wj, &wild, tq) {
163 if (j->seq < wj->seq && !did_self) {
164 TAILQ_FOREACH(p, &opp, tq)
165 add_param(j, p, 0, NULL);
166 did_self = 1;
167 }
168 if (wild_jail_match(j->name, wj->name))
169 TAILQ_FOREACH(p, &wj->params, tq)
170 add_param(j, p, 0, NULL);
171 }
172 if (!did_self)
173 TAILQ_FOREACH(p, &opp, tq)
174 add_param(j, p, 0, NULL);
175
176 /* Resolve any variable substitutions. */
177 pgen = 0;
178 TAILQ_FOREACH(p, &j->params, tq) {
179 p->gen = ++pgen;
180 find_vars:
181 STAILQ_FOREACH(s, &p->val, tq) {
182 varoff = 0;
183 while ((v = STAILQ_FIRST(&s->vars))) {
184 TAILQ_FOREACH(vp, &j->params, tq)
185 if (!strcmp(vp->name, v->name))
186 break;
187 if (!vp) {
188 jail_warnx(j,
189 "%s: variable \"%s\" not found",
190 p->name, v->name);
191 bad_var:
192 j->flags |= JF_FAILED;
193 TAILQ_FOREACH(vp, &j->params, tq)
194 if (vp->gen == pgen)
195 vp->flags |= PF_BAD;
196 goto free_var;
197 }
198 if (vp->flags & PF_BAD)
199 goto bad_var;
200 if (vp->gen == pgen) {
201 jail_warnx(j, "%s: variable loop",
202 v->name);
203 goto bad_var;
204 }
205 STAILQ_FOREACH(vs, &vp->val, tq)
206 if (!STAILQ_EMPTY(&vs->vars)) {
207 vp->gen = pgen;
208 TAILQ_REMOVE(&j->params, vp,
209 tq);
210 TAILQ_INSERT_BEFORE(p, vp, tq);
211 p = vp;
212 goto find_vars;
213 }
214 vs = STAILQ_FIRST(&vp->val);
215 if (STAILQ_NEXT(vs, tq) != NULL &&
216 (s->s[0] != '\0' ||
217 STAILQ_NEXT(v, tq))) {
218 jail_warnx(j, "%s: array cannot be "
219 "substituted inline",
220 p->name);
221 goto bad_var;
222 }
223 s->s = erealloc(s->s, s->len + vs->len + 1);
224 memmove(s->s + v->pos + varoff + vs->len,
225 s->s + v->pos + varoff,
226 s->len - (v->pos + varoff) + 1);
227 memcpy(s->s + v->pos + varoff, vs->s, vs->len);
228 varoff += vs->len;
229 s->len += vs->len;
230 while ((vs = STAILQ_NEXT(vs, tq))) {
231 ns = emalloc(sizeof(struct cfstring));
232 ns->s = estrdup(vs->s);
233 ns->len = vs->len;
234 STAILQ_INIT(&ns->vars);
235 STAILQ_INSERT_AFTER(&p->val, s, ns, tq);
236 s = ns;
237 }
238 free_var:
239 free(v->name);
240 STAILQ_REMOVE_HEAD(&s->vars, tq);
241 free(v);
242 }
243 }
244 }
245
246 /* Free the jail's original parameter list and any variables. */
247 while ((p = TAILQ_FIRST(&opp)))
248 free_param(&opp, p);
249 TAILQ_FOREACH_SAFE(p, &j->params, tq, tp)
250 if (p->flags & PF_VAR)
251 free_param(&j->params, p);
252 }
253 while ((wj = TAILQ_FIRST(&wild))) {
254 free(wj->name);
255 while ((p = TAILQ_FIRST(&wj->params)))
256 free_param(&wj->params, p);
257 TAILQ_REMOVE(&wild, wj, tq);
258 }
259}
260
261/*
262 * Create a new jail record.
263 */
264struct cfjail *
265add_jail(void)
266{
267 struct cfjail *j;
268
269 j = emalloc(sizeof(struct cfjail));
270 memset(j, 0, sizeof(struct cfjail));
271 TAILQ_INIT(&j->params);
272 STAILQ_INIT(&j->dep[DEP_FROM]);
273 STAILQ_INIT(&j->dep[DEP_TO]);
274 j->queue = &cfjails;
275 TAILQ_INSERT_TAIL(&cfjails, j, tq);
276 return j;
277}
278
279/*
280 * Add a parameter to a jail.
281 */
282void
283add_param(struct cfjail *j, const struct cfparam *p, enum intparam ipnum,
284 const char *value)
285{
286 struct cfstrings nss;
287 struct cfparam *dp, *np;
288 struct cfstring *s, *ns;
289 struct cfvar *v, *nv;
290 struct ipspec *ips;
291 const char *name;
292 char *cs, *tname;
293 unsigned flags;
294
295 if (j == NULL) {
296 /* Create a single anonymous jail if one doesn't yet exist. */
297 j = TAILQ_LAST(&cfjails, cfjails);
298 if (j == NULL)
299 j = add_jail();
300 }
301 STAILQ_INIT(&nss);
302 if (p != NULL) {
303 name = p->name;
304 flags = p->flags;
305 /*
306 * Make a copy of the parameter's string list,
307 * which may be freed if it's overridden later.
308 */
309 STAILQ_FOREACH(s, &p->val, tq) {
310 ns = emalloc(sizeof(struct cfstring));
311 ns->s = estrdup(s->s);
312 ns->len = s->len;
313 STAILQ_INIT(&ns->vars);
314 STAILQ_FOREACH(v, &s->vars, tq) {
315 nv = emalloc(sizeof(struct cfvar));
316 nv->name = strdup(v->name);
317 nv->pos = v->pos;
318 STAILQ_INSERT_TAIL(&ns->vars, nv, tq);
319 }
320 STAILQ_INSERT_TAIL(&nss, ns, tq);
321 }
322 } else {
323 flags = PF_APPEND;
324 if (ipnum != 0) {
325 name = intparams[ipnum].name;
326 flags |= intparams[ipnum].flags;
327 } else if ((cs = strchr(value, '='))) {
328 tname = alloca(cs - value + 1);
329 strlcpy(tname, value, cs - value + 1);
330 name = tname;
331 value = cs + 1;
332 } else {
333 name = value;
334 value = NULL;
335 }
336 if (value != NULL) {
337 ns = emalloc(sizeof(struct cfstring));
338 ns->s = estrdup(value);
339 ns->len = strlen(value);
340 STAILQ_INIT(&ns->vars);
341 STAILQ_INSERT_TAIL(&nss, ns, tq);
342 }
343 }
344
345 /* See if this parameter has already been added. */
346 if (ipnum != 0)
347 dp = j->intparams[ipnum];
348 else
349 TAILQ_FOREACH(dp, &j->params, tq)
350 if (!(dp->flags & PF_CONV) && equalopts(dp->name, name))
351 break;
352 if (dp != NULL) {
353 /* Found it - append or replace. */
354 if (strcmp(dp->name, name)) {
355 free(dp->name);
356 dp->name = estrdup(name);
357 }
358 if (!(flags & PF_APPEND) || STAILQ_EMPTY(&nss))
359 free_param_strings(dp);
360 STAILQ_CONCAT(&dp->val, &nss);
361 dp->flags |= flags;
362 } else {
363 /* Not found - add it. */
364 np = emalloc(sizeof(struct cfparam));
365 np->name = estrdup(name);
366 STAILQ_INIT(&np->val);
367 STAILQ_CONCAT(&np->val, &nss);
368 np->flags = flags;
369 np->gen = 0;
370 TAILQ_INSERT_TAIL(&j->params, np, tq);
371 if (ipnum != 0)
372 j->intparams[ipnum] = np;
373 else
374 for (ipnum = 1; ipnum < IP_NPARAM; ipnum++)
375 if (!(intparams[ipnum].flags & PF_CONV) &&
376 equalopts(name, intparams[ipnum].name)) {
377 j->intparams[ipnum] = np;
378 np->flags |= intparams[ipnum].flags;
379 break;
380 }
381 }
382}
383
384/*
385 * Return if a boolean parameter exists and is true.
386 */
387int
388bool_param(const struct cfparam *p)
389{
390 const char *cs;
391
392 if (p == NULL)
393 return 0;
394 cs = strrchr(p->name, '.');
395 return !strncmp(cs ? cs + 1 : p->name, "no", 2) ^
396 (STAILQ_EMPTY(&p->val) ||
397 !strcasecmp(STAILQ_LAST(&p->val, cfstring, tq)->s, "true") ||
398 (strtol(STAILQ_LAST(&p->val, cfstring, tq)->s, NULL, 10)));
399}
400
401/*
402 * Set an integer if a parameter if it exists.
403 */
404int
405int_param(const struct cfparam *p, int *ip)
406{
407 if (p == NULL || STAILQ_EMPTY(&p->val))
408 return 0;
409 *ip = strtol(STAILQ_LAST(&p->val, cfstring, tq)->s, NULL, 10);
410 return 1;
411}
412
413/*
414 * Return the string value of a scalar parameter if it exists.
415 */
416const char *
417string_param(const struct cfparam *p)
418{
419 return (p && !STAILQ_EMPTY(&p->val)
420 ? STAILQ_LAST(&p->val, cfstring, tq)->s : NULL);
421}
422
423/*
424 * Check syntax and values of internal parameters. Set some internal
425 * parameters based on the values of others.
426 */
427int
428check_intparams(struct cfjail *j)
429{
430 struct in_addr addr4;
431 struct addrinfo hints;
432 struct addrinfo *ai0, *ai;
433 struct cfparam *p;
434 struct cfstring *s, *ns;
|
| 435 FILE *f;
|
433 const char *hostname, *val;
| 436 const char *hostname, *val;
|
434 char *cs, *ep;
435 size_t size;
| 437 char *cs, *ep, *ln;
438 size_t size, lnlen;
|
436 int error, gicode, ip4ok, defif, prefix;
437 int mib[4];
438 char avalue4[INET_ADDRSTRLEN];
439#ifdef INET6
440 struct in6_addr addr6;
441 int ip6ok, isip6;
442 char avalue6[INET6_ADDRSTRLEN];
443#endif
444
445 error = 0;
446 /* Check format of boolan and integer values. */
447 TAILQ_FOREACH(p, &j->params, tq) {
448 if (!STAILQ_EMPTY(&p->val) &&
449 (p->flags & (PF_BOOL | PF_INT))) {
450 val = STAILQ_LAST(&p->val, cfstring, tq)->s;
451 if (p->flags & PF_BOOL) {
452 if (strcasecmp(val, "false") &&
453 strcasecmp(val, "true") &&
454 ((void)strtol(val, &ep, 10), *ep)) {
455 jail_warnx(j,
456 "%s: unknown boolean value \"%s\"",
457 p->name, val);
458 error = -1;
459 }
460 } else {
461 (void)strtol(val, &ep, 10);
462 if (ep == val || *ep) {
463 jail_warnx(j,
464 "%s: non-integer value \"%s\"",
465 p->name, val);
466 error = -1;
467 }
468 }
469 }
470 }
471
472 /*
473 * The ip_hostname parameter looks up the hostname, and adds parameters
474 * for any IP addresses it finds.
475 */
476 if (((j->flags & JF_OP_MASK) != JF_STOP ||
477 j->intparams[IP_INTERFACE] != NULL) &&
478 bool_param(j->intparams[IP_IP_HOSTNAME]) &&
479 (hostname = string_param(j->intparams[KP_HOST_HOSTNAME]))) {
480 j->intparams[IP_IP_HOSTNAME] = NULL;
481 /*
482 * Silently ignore unsupported address families from
483 * DNS lookups.
484 */
485 size = 4;
486 ip4ok = sysctlnametomib("security.jail.param.ip4", mib, &size)
487 == 0;
488#ifdef INET6
489 size = 4;
490 ip6ok = sysctlnametomib("security.jail.param.ip6", mib, &size)
491 == 0;
492#endif
493 if (ip4ok
494#ifdef INET6
495 || ip6ok
496#endif
497 ) {
498 /* Look up the hostname (or get the address) */
499 memset(&hints, 0, sizeof(hints));
500 hints.ai_socktype = SOCK_STREAM;
501 hints.ai_family =
502#ifdef INET6
503 ip6ok ? (ip4ok ? PF_UNSPEC : PF_INET6) :
504#endif
505 PF_INET;
506 gicode = getaddrinfo(hostname, NULL, &hints, &ai0);
507 if (gicode != 0) {
508 jail_warnx(j, "host.hostname %s: %s", hostname,
509 gai_strerror(gicode));
510 error = -1;
511 } else {
512 /*
513 * Convert the addresses to ASCII so jailparam
514 * can convert them back. Errors are not
515 * expected here.
516 */
517 for (ai = ai0; ai; ai = ai->ai_next)
518 switch (ai->ai_family) {
519 case AF_INET:
520 memcpy(&addr4,
521 &((struct sockaddr_in *)
522 (void *)ai->ai_addr)->
523 sin_addr, sizeof(addr4));
524 if (inet_ntop(AF_INET,
525 &addr4, avalue4,
526 INET_ADDRSTRLEN) == NULL)
527 err(1, "inet_ntop");
528 add_param(j, NULL, KP_IP4_ADDR,
529 avalue4);
530 break;
531#ifdef INET6
532 case AF_INET6:
533 memcpy(&addr6,
534 &((struct sockaddr_in6 *)
535 (void *)ai->ai_addr)->
536 sin6_addr, sizeof(addr6));
537 if (inet_ntop(AF_INET6,
538 &addr6, avalue6,
539 INET6_ADDRSTRLEN) == NULL)
540 err(1, "inet_ntop");
541 add_param(j, NULL, KP_IP6_ADDR,
542 avalue6);
543 break;
544#endif
545 }
546 freeaddrinfo(ai0);
547 }
548 }
549 }
550
551 /*
552 * IP addresses may include an interface to set that address on,
553 * and a netmask/suffix for that address.
554 */
555 defif = string_param(j->intparams[IP_INTERFACE]) != NULL;
556#ifdef INET6
557 for (isip6 = 0; isip6 <= 1; isip6++)
558#else
559#define isip6 0
560 do
561#endif
562 {
563 if (j->intparams[KP_IP4_ADDR + isip6] == NULL)
564 continue;
565 STAILQ_FOREACH(s, &j->intparams[KP_IP4_ADDR + isip6]->val, tq) {
566 cs = strchr(s->s, '|');
567 if (cs || defif)
568 add_param(j, NULL, IP__IP4_IFADDR + isip6,
569 s->s);
570 if (cs) {
571 strcpy(s->s, cs + 1);
572 s->len -= cs + 1 - s->s;
573 }
574 if ((cs = strchr(s->s, '/'))) {
575 prefix = strtol(cs + 1, &ep, 10);
576 if (
577#ifdef INET6
578 !isip6 &&
579#endif
580 *ep == '.'
581 ? inet_pton(AF_INET, cs + 1, &addr4) != 1
582 : *ep || prefix < 0 || prefix > (
583#ifdef INET6
584 isip6 ? 128 :
585#endif
586 32)) {
587 jail_warnx(j,
588#ifdef INET6
589 isip6
590 ? "ip6.addr: bad prefixlen \"%s\"" :
591#endif
592 "ip4.addr: bad netmask \"%s\"",
593 cs);
594 error = -1;
595 }
596 *cs = '\0';
597 s->len = cs - s->s + 1;
598 }
599 }
600 }
601#ifndef INET6
602 while (0);
603#endif
| 439 int error, gicode, ip4ok, defif, prefix;
440 int mib[4];
441 char avalue4[INET_ADDRSTRLEN];
442#ifdef INET6
443 struct in6_addr addr6;
444 int ip6ok, isip6;
445 char avalue6[INET6_ADDRSTRLEN];
446#endif
447
448 error = 0;
449 /* Check format of boolan and integer values. */
450 TAILQ_FOREACH(p, &j->params, tq) {
451 if (!STAILQ_EMPTY(&p->val) &&
452 (p->flags & (PF_BOOL | PF_INT))) {
453 val = STAILQ_LAST(&p->val, cfstring, tq)->s;
454 if (p->flags & PF_BOOL) {
455 if (strcasecmp(val, "false") &&
456 strcasecmp(val, "true") &&
457 ((void)strtol(val, &ep, 10), *ep)) {
458 jail_warnx(j,
459 "%s: unknown boolean value \"%s\"",
460 p->name, val);
461 error = -1;
462 }
463 } else {
464 (void)strtol(val, &ep, 10);
465 if (ep == val || *ep) {
466 jail_warnx(j,
467 "%s: non-integer value \"%s\"",
468 p->name, val);
469 error = -1;
470 }
471 }
472 }
473 }
474
475 /*
476 * The ip_hostname parameter looks up the hostname, and adds parameters
477 * for any IP addresses it finds.
478 */
479 if (((j->flags & JF_OP_MASK) != JF_STOP ||
480 j->intparams[IP_INTERFACE] != NULL) &&
481 bool_param(j->intparams[IP_IP_HOSTNAME]) &&
482 (hostname = string_param(j->intparams[KP_HOST_HOSTNAME]))) {
483 j->intparams[IP_IP_HOSTNAME] = NULL;
484 /*
485 * Silently ignore unsupported address families from
486 * DNS lookups.
487 */
488 size = 4;
489 ip4ok = sysctlnametomib("security.jail.param.ip4", mib, &size)
490 == 0;
491#ifdef INET6
492 size = 4;
493 ip6ok = sysctlnametomib("security.jail.param.ip6", mib, &size)
494 == 0;
495#endif
496 if (ip4ok
497#ifdef INET6
498 || ip6ok
499#endif
500 ) {
501 /* Look up the hostname (or get the address) */
502 memset(&hints, 0, sizeof(hints));
503 hints.ai_socktype = SOCK_STREAM;
504 hints.ai_family =
505#ifdef INET6
506 ip6ok ? (ip4ok ? PF_UNSPEC : PF_INET6) :
507#endif
508 PF_INET;
509 gicode = getaddrinfo(hostname, NULL, &hints, &ai0);
510 if (gicode != 0) {
511 jail_warnx(j, "host.hostname %s: %s", hostname,
512 gai_strerror(gicode));
513 error = -1;
514 } else {
515 /*
516 * Convert the addresses to ASCII so jailparam
517 * can convert them back. Errors are not
518 * expected here.
519 */
520 for (ai = ai0; ai; ai = ai->ai_next)
521 switch (ai->ai_family) {
522 case AF_INET:
523 memcpy(&addr4,
524 &((struct sockaddr_in *)
525 (void *)ai->ai_addr)->
526 sin_addr, sizeof(addr4));
527 if (inet_ntop(AF_INET,
528 &addr4, avalue4,
529 INET_ADDRSTRLEN) == NULL)
530 err(1, "inet_ntop");
531 add_param(j, NULL, KP_IP4_ADDR,
532 avalue4);
533 break;
534#ifdef INET6
535 case AF_INET6:
536 memcpy(&addr6,
537 &((struct sockaddr_in6 *)
538 (void *)ai->ai_addr)->
539 sin6_addr, sizeof(addr6));
540 if (inet_ntop(AF_INET6,
541 &addr6, avalue6,
542 INET6_ADDRSTRLEN) == NULL)
543 err(1, "inet_ntop");
544 add_param(j, NULL, KP_IP6_ADDR,
545 avalue6);
546 break;
547#endif
548 }
549 freeaddrinfo(ai0);
550 }
551 }
552 }
553
554 /*
555 * IP addresses may include an interface to set that address on,
556 * and a netmask/suffix for that address.
557 */
558 defif = string_param(j->intparams[IP_INTERFACE]) != NULL;
559#ifdef INET6
560 for (isip6 = 0; isip6 <= 1; isip6++)
561#else
562#define isip6 0
563 do
564#endif
565 {
566 if (j->intparams[KP_IP4_ADDR + isip6] == NULL)
567 continue;
568 STAILQ_FOREACH(s, &j->intparams[KP_IP4_ADDR + isip6]->val, tq) {
569 cs = strchr(s->s, '|');
570 if (cs || defif)
571 add_param(j, NULL, IP__IP4_IFADDR + isip6,
572 s->s);
573 if (cs) {
574 strcpy(s->s, cs + 1);
575 s->len -= cs + 1 - s->s;
576 }
577 if ((cs = strchr(s->s, '/'))) {
578 prefix = strtol(cs + 1, &ep, 10);
579 if (
580#ifdef INET6
581 !isip6 &&
582#endif
583 *ep == '.'
584 ? inet_pton(AF_INET, cs + 1, &addr4) != 1
585 : *ep || prefix < 0 || prefix > (
586#ifdef INET6
587 isip6 ? 128 :
588#endif
589 32)) {
590 jail_warnx(j,
591#ifdef INET6
592 isip6
593 ? "ip6.addr: bad prefixlen \"%s\"" :
594#endif
595 "ip4.addr: bad netmask \"%s\"",
596 cs);
597 error = -1;
598 }
599 *cs = '\0';
600 s->len = cs - s->s + 1;
601 }
602 }
603 }
604#ifndef INET6
605 while (0);
606#endif
|
| 607
608 /*
609 * Read mount.fstab file(s), and treat each line as its own mount
610 * parameter.
611 */
612 if (j->intparams[IP_MOUNT_FSTAB] != NULL) {
613 STAILQ_FOREACH(s, &j->intparams[IP_MOUNT_FSTAB]->val, tq) {
614 if (s->len == 0)
615 continue;
616 f = fopen(s->s, "r");
617 if (f == NULL) {
618 jail_warnx(j, "mount.fstab: %s: %s",
619 s->s, strerror(errno));
620 error = -1;
621 continue;
622 }
623 while ((ln = fgetln(f, &lnlen))) {
624 if ((cs = memchr(ln, '#', lnlen - 1)))
625 lnlen = cs - ln + 1;
626 if (ln[lnlen - 1] == '\n' ||
627 ln[lnlen - 1] == '#')
628 ln[lnlen - 1] = '\0';
629 else {
630 cs = alloca(lnlen + 1);
631 strlcpy(cs, ln, lnlen + 1);
632 ln = cs;
633 }
634 add_param(j, NULL, IP__MOUNT_FROM_FSTAB, ln);
635 }
636 fclose(f);
637 }
638 }
639 if (error)
640 failed(j);
|
604 return error;
605}
606
607/*
608 * Import parameters into libjail's binary jailparam format.
609 */
610int
611import_params(struct cfjail *j)
612{
613 struct cfparam *p;
614 struct cfstring *s, *ts;
615 struct jailparam *jp;
616 char *value, *cs;
617 size_t vallen;
618 int error;
619
620 error = 0;
621 j->njp = 0;
622 TAILQ_FOREACH(p, &j->params, tq)
623 if (!(p->flags & PF_INTERNAL))
624 j->njp++;
625 j->jp = jp = emalloc(j->njp * sizeof(struct jailparam));
626 TAILQ_FOREACH(p, &j->params, tq) {
627 if (p->flags & PF_INTERNAL)
628 continue;
629 if (jailparam_init(jp, p->name) < 0) {
630 error = -1;
631 jail_warnx(j, "%s", jail_errmsg);
632 continue;
633 }
634 if (STAILQ_EMPTY(&p->val))
635 value = NULL;
636 else if (!jp->jp_elemlen ||
637 !STAILQ_NEXT(STAILQ_FIRST(&p->val), tq)) {
638 /*
639 * Scalar parameters silently discard multiple (array)
640 * values, keeping only the last value added. This
641 * lets values added from the command line append to
642 * arrays wthout pre-checking the type.
643 */
644 value = STAILQ_LAST(&p->val, cfstring, tq)->s;
645 } else {
646 /*
647 * Convert arrays into comma-separated strings, which
648 * jailparam_import will then convert back into arrays.
649 */
650 vallen = 0;
651 STAILQ_FOREACH(s, &p->val, tq)
652 vallen += s->len + 1;
653 value = alloca(vallen);
654 cs = value;
655 STAILQ_FOREACH_SAFE(s, &p->val, tq, ts) {
656 strcpy(cs, s->s);
657 if (ts != NULL) {
658 cs += s->len + 1;
659 cs[-1] = ',';
660 }
661 }
662 }
663 if (jailparam_import(jp, value) < 0) {
664 error = -1;
665 jail_warnx(j, "%s", jail_errmsg);
666 }
667 jp++;
668 }
669 if (error) {
670 jailparam_free(j->jp, j->njp);
671 free(j->jp);
672 j->jp = NULL;
673 failed(j);
674 }
675 return error;
676}
677
678/*
679 * Check if options are equal (with or without the "no" prefix).
680 */
681int
682equalopts(const char *opt1, const char *opt2)
683{
684 char *p;
685
686 /* "opt" vs. "opt" or "noopt" vs. "noopt" */
687 if (strcmp(opt1, opt2) == 0)
688 return (1);
689 /* "noopt" vs. "opt" */
690 if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0)
691 return (1);
692 /* "opt" vs. "noopt" */
693 if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0)
694 return (1);
695 while ((p = strchr(opt1, '.')) != NULL &&
696 !strncmp(opt1, opt2, ++p - opt1)) {
697 opt2 += p - opt1;
698 opt1 = p;
699 /* "foo.noopt" vs. "foo.opt" */
700 if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0)
701 return (1);
702 /* "foo.opt" vs. "foo.noopt" */
703 if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0)
704 return (1);
705 }
706 return (0);
707}
708
709/*
710 * See if a jail name matches a wildcard.
711 */
712int
713wild_jail_match(const char *jname, const char *wname)
714{
715 const char *jc, *jd, *wc, *wd;
716
717 /*
718 * A non-final "*" component in the wild name matches a single jail
719 * component, and a final "*" matches one or more jail components.
720 */
721 for (jc = jname, wc = wname;
722 (jd = strchr(jc, '.')) && (wd = strchr(wc, '.'));
723 jc = jd + 1, wc = wd + 1)
724 if (strncmp(jc, wc, jd - jc + 1) && strncmp(wc, "*.", 2))
725 return 0;
726 return (!strcmp(jc, wc) || !strcmp(wc, "*"));
727}
728
729/*
730 * Return if a jail name is a wildcard.
731 */
732int
733wild_jail_name(const char *wname)
734{
735 const char *wc;
736
737 for (wc = strchr(wname, '*'); wc; wc = strchr(wc + 1, '*'))
738 if ((wc == wname || wc[-1] == '.') &&
739 (wc[1] == '\0' || wc[1] == '.'))
740 return 1;
741 return 0;
742}
743
744/*
745 * Free a parameter record and all its strings and variables.
746 */
747static void
748free_param(struct cfparams *pp, struct cfparam *p)
749{
750 free(p->name);
751 free_param_strings(p);
752 TAILQ_REMOVE(pp, p, tq);
753 free(p);
754}
755
756static void
757free_param_strings(struct cfparam *p)
758{
759 struct cfstring *s;
760 struct cfvar *v;
761
762 while ((s = STAILQ_FIRST(&p->val))) {
763 free(s->s);
764 while ((v = STAILQ_FIRST(&s->vars))) {
765 free(v->name);
766 STAILQ_REMOVE_HEAD(&s->vars, tq);
767 free(v);
768 }
769 STAILQ_REMOVE_HEAD(&p->val, tq);
770 free(s);
771 }
772}
| 641 return error;
642}
643
644/*
645 * Import parameters into libjail's binary jailparam format.
646 */
647int
648import_params(struct cfjail *j)
649{
650 struct cfparam *p;
651 struct cfstring *s, *ts;
652 struct jailparam *jp;
653 char *value, *cs;
654 size_t vallen;
655 int error;
656
657 error = 0;
658 j->njp = 0;
659 TAILQ_FOREACH(p, &j->params, tq)
660 if (!(p->flags & PF_INTERNAL))
661 j->njp++;
662 j->jp = jp = emalloc(j->njp * sizeof(struct jailparam));
663 TAILQ_FOREACH(p, &j->params, tq) {
664 if (p->flags & PF_INTERNAL)
665 continue;
666 if (jailparam_init(jp, p->name) < 0) {
667 error = -1;
668 jail_warnx(j, "%s", jail_errmsg);
669 continue;
670 }
671 if (STAILQ_EMPTY(&p->val))
672 value = NULL;
673 else if (!jp->jp_elemlen ||
674 !STAILQ_NEXT(STAILQ_FIRST(&p->val), tq)) {
675 /*
676 * Scalar parameters silently discard multiple (array)
677 * values, keeping only the last value added. This
678 * lets values added from the command line append to
679 * arrays wthout pre-checking the type.
680 */
681 value = STAILQ_LAST(&p->val, cfstring, tq)->s;
682 } else {
683 /*
684 * Convert arrays into comma-separated strings, which
685 * jailparam_import will then convert back into arrays.
686 */
687 vallen = 0;
688 STAILQ_FOREACH(s, &p->val, tq)
689 vallen += s->len + 1;
690 value = alloca(vallen);
691 cs = value;
692 STAILQ_FOREACH_SAFE(s, &p->val, tq, ts) {
693 strcpy(cs, s->s);
694 if (ts != NULL) {
695 cs += s->len + 1;
696 cs[-1] = ',';
697 }
698 }
699 }
700 if (jailparam_import(jp, value) < 0) {
701 error = -1;
702 jail_warnx(j, "%s", jail_errmsg);
703 }
704 jp++;
705 }
706 if (error) {
707 jailparam_free(j->jp, j->njp);
708 free(j->jp);
709 j->jp = NULL;
710 failed(j);
711 }
712 return error;
713}
714
715/*
716 * Check if options are equal (with or without the "no" prefix).
717 */
718int
719equalopts(const char *opt1, const char *opt2)
720{
721 char *p;
722
723 /* "opt" vs. "opt" or "noopt" vs. "noopt" */
724 if (strcmp(opt1, opt2) == 0)
725 return (1);
726 /* "noopt" vs. "opt" */
727 if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0)
728 return (1);
729 /* "opt" vs. "noopt" */
730 if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0)
731 return (1);
732 while ((p = strchr(opt1, '.')) != NULL &&
733 !strncmp(opt1, opt2, ++p - opt1)) {
734 opt2 += p - opt1;
735 opt1 = p;
736 /* "foo.noopt" vs. "foo.opt" */
737 if (strncmp(opt1, "no", 2) == 0 && strcmp(opt1 + 2, opt2) == 0)
738 return (1);
739 /* "foo.opt" vs. "foo.noopt" */
740 if (strncmp(opt2, "no", 2) == 0 && strcmp(opt1, opt2 + 2) == 0)
741 return (1);
742 }
743 return (0);
744}
745
746/*
747 * See if a jail name matches a wildcard.
748 */
749int
750wild_jail_match(const char *jname, const char *wname)
751{
752 const char *jc, *jd, *wc, *wd;
753
754 /*
755 * A non-final "*" component in the wild name matches a single jail
756 * component, and a final "*" matches one or more jail components.
757 */
758 for (jc = jname, wc = wname;
759 (jd = strchr(jc, '.')) && (wd = strchr(wc, '.'));
760 jc = jd + 1, wc = wd + 1)
761 if (strncmp(jc, wc, jd - jc + 1) && strncmp(wc, "*.", 2))
762 return 0;
763 return (!strcmp(jc, wc) || !strcmp(wc, "*"));
764}
765
766/*
767 * Return if a jail name is a wildcard.
768 */
769int
770wild_jail_name(const char *wname)
771{
772 const char *wc;
773
774 for (wc = strchr(wname, '*'); wc; wc = strchr(wc + 1, '*'))
775 if ((wc == wname || wc[-1] == '.') &&
776 (wc[1] == '\0' || wc[1] == '.'))
777 return 1;
778 return 0;
779}
780
781/*
782 * Free a parameter record and all its strings and variables.
783 */
784static void
785free_param(struct cfparams *pp, struct cfparam *p)
786{
787 free(p->name);
788 free_param_strings(p);
789 TAILQ_REMOVE(pp, p, tq);
790 free(p);
791}
792
793static void
794free_param_strings(struct cfparam *p)
795{
796 struct cfstring *s;
797 struct cfvar *v;
798
799 while ((s = STAILQ_FIRST(&p->val))) {
800 free(s->s);
801 while ((v = STAILQ_FIRST(&s->vars))) {
802 free(v->name);
803 STAILQ_REMOVE_HEAD(&s->vars, tq);
804 free(v);
805 }
806 STAILQ_REMOVE_HEAD(&p->val, tq);
807 free(s);
808 }
809}
|