1/* $NetBSD: extern.h,v 1.50 2004-08-09 12:56:47 lukem Exp $ */
2
3/*-
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)extern.h 8.2 (Berkeley) 4/4/94
32 */
33
34/*-
35 * Copyright (c) 1997-2004 The NetBSD Foundation, Inc.
36 * All rights reserved.
37 *
38 * This code is derived from software contributed to The NetBSD Foundation
39 * by Luke Mewburn.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. All advertising materials mentioning features or use of this software
50 * must display the following acknowledgement:
51 * This product includes software developed by the NetBSD
52 * Foundation, Inc. and its contributors.
53 * 4. Neither the name of The NetBSD Foundation nor the names of its
54 * contributors may be used to endorse or promote products derived
55 * from this software without specific prior written permission.
56 *
57 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
58 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
59 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
60 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
61 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
62 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
63 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
64 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
65 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
66 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
67 * POSSIBILITY OF SUCH DAMAGE.
68 */
69
70/*
71 * Copyright (C) 1997 and 1998 WIDE Project.
72 * All rights reserved.
73 *
74 * Redistribution and use in source and binary forms, with or without
75 * modification, are permitted provided that the following conditions
76 * are met:
77 * 1. Redistributions of source code must retain the above copyright
78 * notice, this list of conditions and the following disclaimer.
79 * 2. Redistributions in binary form must reproduce the above copyright
80 * notice, this list of conditions and the following disclaimer in the
81 * documentation and/or other materials provided with the distribution.
82 * 3. Neither the name of the project nor the names of its contributors
83 * may be used to endorse or promote products derived from this software
84 * without specific prior written permission.
85 *
86 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
87 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
88 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
89 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
90 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
91 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
92 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
93 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
94 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
95 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
96 * SUCH DAMAGE.
97 */
98
99#ifdef NO_LONG_LONG
100# define LLF "%ld"
101# define LLFP(x) "%" x "ld"
102# define LLT long
103# define ULLF "%lu"
104# define ULLFP(x) "%" x "lu"
105# define ULLT unsigned long
106# define STRTOLL(x,y,z) strtol(x,y,z)
107# define LLTMIN LONG_MIN
108# define LLTMAX LONG_MAX
109#else
110# define LLF "%lld"
111# define LLFP(x) "%" x "lld"
112# define LLT long long
113# define ULLF "%llu"
114# define ULLFP(x) "%" x "llu"
115# define ULLT unsigned long long
116# define STRTOLL(x,y,z) strtoll(x,y,z)
117# define LLTMIN LLONG_MIN
118# define LLTMAX LLONG_MAX
119#endif
120
121#define FTP_BUFLEN 512
122
123void abor(void);
124void blkfree(char **);
125void closedataconn(FILE *);
126char *conffilename(const char *);
127char **copyblk(char **);
128void count_users(void);
129void cprintf(FILE *, const char *, ...)
130 __attribute__((__format__(__printf__, 2, 3)));
131void cwd(const char *);
132FILE *dataconn(const char *, off_t, const char *);
133void delete(const char *);
134int display_file(const char *, int);
135char **do_conversion(const char *);
136void dologout(int);
137void fatal(const char *);
138void feat(void);
139void format_path(char *, const char *);
140int ftpd_pclose(FILE *);
141FILE *ftpd_popen(char *[], const char *, int);
142char *getline(char *, int, FILE *);
143void init_curclass(void);
144void logxfer(const char *, off_t, const char *, const char *,
145 const struct timeval *, const char *);
146struct tab *lookup(struct tab *, const char *);
147void makedir(const char *);
148void mlsd(const char *);
149void mlst(const char *);
150void opts(const char *);
151void parse_conf(const char *);
152void pass(const char *);
153void passive(void);
154int lpsvproto2af(int);
155int af2lpsvproto(int);
156int epsvproto2af(int);
157int af2epsvproto(int);
158void long_passive(char *, int);
159int extended_port(const char *);
160void epsv_protounsupp(const char *);
161void perror_reply(int, const char *);
162void pwd(void);
163void removedir(const char *);
164void renamecmd(const char *, const char *);
165char *renamefrom(const char *);
166void reply(int, const char *, ...)
167 __attribute__((__format__(__printf__, 2, 3)));
168void retrieve(char *[], const char *);
169void send_file_list(const char *);
170void show_chdir_messages(int);
171void sizecmd(const char *);
172void statcmd(void);
173void statfilecmd(const char *);
174void statxfer(void);
175void store(const char *, const char *, int);
176void user(const char *);
177char *xstrdup(const char *);
178void yyerror(char *);
179
180#ifdef SUPPORT_UTMP
181struct utmp;
182
183void ftpd_logwtmp(const char *, const char *, const char *);
184void ftpd_login(const struct utmp *ut);
185int ftpd_logout(const char *line);
186#endif
187
188#ifdef SUPPORT_UTMPX
189struct utmpx;
190
191void ftpd_loginx(const struct utmpx *);
192void ftpd_logwtmpx(const char *, const char *, const char *, int, int);
193#endif
194
195#include <netinet/in.h>
196
197#if defined(__NetBSD__)
198# define HAVE_SETPROCTITLE 1
199# define HAVE_SOCKADDR_SA_LEN 1
200#endif
201
202struct sockinet {
203 union sockunion {
204 struct sockaddr_in su_sin;
205#ifdef INET6
206 struct sockaddr_in6 su_sin6;
207#endif
208 } si_su;
209#if !HAVE_SOCKADDR_SA_LEN
210 int si_len;
211#endif
212};
213
214#if !HAVE_SOCKADDR_SA_LEN
215# define su_len si_len
216#else
217# define su_len si_su.su_sin.sin_len
218#endif
219#define su_addr si_su.su_sin.sin_addr
220#define su_family si_su.su_sin.sin_family
221#define su_port si_su.su_sin.sin_port
222#ifdef INET6
223# define su_6addr si_su.su_sin6.sin6_addr
224# define su_scope_id si_su.su_sin6.sin6_scope_id
225#endif
226
227struct tab {
228 char *name;
229 short token;
230 short state;
231 short flags; /* 1 if command implemented, 2 if has options,
232 4 if can occur OOB */
233 char *help;
234 char *options;
235};
236
237struct ftpconv {
238 struct ftpconv *next;
239 char *suffix; /* Suffix of requested name */
240 char *types; /* Valid file types */
241 char *disable; /* File to disable conversions */
242 char *command; /* Command to do the conversion */
243};
244
245typedef enum {
246 CLASS_GUEST,
247 CLASS_CHROOT,
248 CLASS_REAL
249} class_ft;
250
251typedef enum {
252 FLAG_checkportcmd = 1<<0, /* Check port commands */
253 FLAG_denyquick = 1<<1, /* Check ftpusers(5) before PASS */
254 FLAG_modify = 1<<2, /* Allow CHMOD, DELE, MKD, RMD, RNFR,
255 UMASK */
256 FLAG_passive = 1<<3, /* Allow PASV mode */
257 FLAG_private = 1<<4, /* Don't publish class info in STAT */
258 FLAG_sanenames = 1<<5, /* Restrict names of uploaded files */
259 FLAG_upload = 1<<6, /* As per modify, but also allow
260 APPE, STOR, STOU */
261} classflag_t;
262
263#define CURCLASS_FLAGS_SET(x) (curclass.flags |= (FLAG_ ## x))
264#define CURCLASS_FLAGS_CLR(x) (curclass.flags &= ~(FLAG_ ## x))
265#define CURCLASS_FLAGS_ISSET(x) (curclass.flags & (FLAG_ ## x))
266
267struct ftpclass {
268 struct sockinet advertise; /* PASV address to advertise as */
269 char *chroot; /* Directory to chroot(2) to at login */
270 char *classname; /* Current class */
271 struct ftpconv *conversions; /* List of conversions */
272 char *display; /* File to display upon chdir */
273 char *homedir; /* Directory to chdir(2) to at login */
274 classflag_t flags; /* Flags; see classflag_t above */
275 LLT limit; /* Max connections (-1 = unlimited) */
276 char *limitfile; /* File to display if limit reached */
277 LLT maxfilesize; /* Maximum file size of uploads */
278 LLT maxrateget; /* Maximum get transfer rate throttle */
279 LLT maxrateput; /* Maximum put transfer rate throttle */
280 LLT maxtimeout; /* Maximum permitted timeout */
281 char *motd; /* MotD file to display after login */
282 char *notify; /* Files to notify about upon chdir */
283 LLT portmin; /* Minumum port for passive mode */
284 LLT portmax; /* Maximum port for passive mode */
285 LLT rateget; /* Get (RETR) transfer rate throttle */
286 LLT rateput; /* Put (STOR) transfer rate throttle */
287 LLT timeout; /* Default timeout */
288 class_ft type; /* Class type */
289 mode_t umask; /* Umask to use */
290 LLT mmapsize; /* mmap window size */
291 LLT readsize; /* data read size */
292 LLT writesize; /* data write size */
293 LLT sendbufsize; /* SO_SNDBUF size */
294 LLT sendlowat; /* SO_SNDLOWAT size */
295};
296
297extern void ftp_loop(void) __attribute__ ((noreturn));
298extern void ftp_handle_line(char *);
299
300#ifndef GLOBAL
301#define GLOBAL extern
302#endif
303
304
305GLOBAL struct sockinet ctrl_addr;
306GLOBAL struct sockinet data_dest;
307GLOBAL struct sockinet data_source;
308GLOBAL struct sockinet his_addr;
309GLOBAL struct sockinet pasv_addr;
310GLOBAL int connections;
311GLOBAL struct ftpclass curclass;
312GLOBAL int debug;
313GLOBAL char *emailaddr;
314GLOBAL int form;
315GLOBAL int gidcount; /* number of entries in gidlist[] */
316GLOBAL gid_t *gidlist;
317GLOBAL int hasyyerrored;
318GLOBAL char hostname[MAXHOSTNAMELEN+1];
319GLOBAL char homedir[MAXPATHLEN];
320#ifdef KERBEROS5
321GLOBAL krb5_context kcontext;
322#endif
323GLOBAL int logged_in;
324GLOBAL int logging;
325GLOBAL int pdata; /* for passive mode */
326#if HAVE_SETPROCTITLE
327GLOBAL char proctitle[BUFSIZ]; /* initial part of title */
328#endif
329GLOBAL struct passwd *pw;
330GLOBAL int quietmessages;
331GLOBAL char remotehost[MAXHOSTNAMELEN+1];
332GLOBAL off_t restart_point;
333GLOBAL char tmpline[FTP_BUFLEN];
334GLOBAL int type;
335GLOBAL int usedefault; /* for data transfers */
336GLOBAL const char *version;
337GLOBAL int is_oob;
338
339 /* total file data bytes */
340GLOBAL off_t total_data_in, total_data_out, total_data;
341 /* total number of data files */
342GLOBAL off_t total_files_in, total_files_out, total_files;
343 /* total bytes */
344GLOBAL off_t total_bytes_in, total_bytes_out, total_bytes;
345 /* total number of xfers */
346GLOBAL off_t total_xfers_in, total_xfers_out, total_xfers;
347
348extern struct tab cmdtab[];
349
350#define INTERNAL_LS "/bin/ls"
351
352
353#define CMD_IMPLEMENTED(x) ((x)->flags != 0)
354#define CMD_HAS_OPTIONS(x) ((x)->flags & 0x2)
355#define CMD_OOB(x) ((x)->flags & 0x4)
356
357#define CPUTC(c, f) do { \
358 putc(c, f); total_bytes++; total_bytes_out++; \
359 } while (0);
360
361#define CURCLASSTYPE curclass.type == CLASS_GUEST ? "GUEST" : \
362 curclass.type == CLASS_CHROOT ? "CHROOT" : \
363 curclass.type == CLASS_REAL ? "REAL" : \
364 "<unknown>"
365
366#define ISDOTDIR(x) (x[0] == '.' && x[1] == '\0')
367#define ISDOTDOTDIR(x) (x[0] == '.' && x[1] == '.' && x[2] == '\0')
368
369#define EMPTYSTR(p) ((p) == NULL || *(p) == '\0')
370#define NEXTWORD(P, W) do { \
371 (W) = strsep(&(P), " \t"); \
372 } while ((W) != NULL && *(W) == '\0')
373#define PLURAL(s) ((s) == 1 ? "" : "s")
374#define REASSIGN(X,Y) do { if (X) free(X); (X)=(Y); } while (/*CONSTCOND*/0)
375
376#ifndef IPPORT_ANONMAX
377# define IPPORT_ANONMAX 65535
378#endif
2
3/*-
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)extern.h 8.2 (Berkeley) 4/4/94
32 */
33
34/*-
35 * Copyright (c) 1997-2004 The NetBSD Foundation, Inc.
36 * All rights reserved.
37 *
38 * This code is derived from software contributed to The NetBSD Foundation
39 * by Luke Mewburn.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. All advertising materials mentioning features or use of this software
50 * must display the following acknowledgement:
51 * This product includes software developed by the NetBSD
52 * Foundation, Inc. and its contributors.
53 * 4. Neither the name of The NetBSD Foundation nor the names of its
54 * contributors may be used to endorse or promote products derived
55 * from this software without specific prior written permission.
56 *
57 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
58 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
59 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
60 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
61 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
62 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
63 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
64 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
65 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
66 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
67 * POSSIBILITY OF SUCH DAMAGE.
68 */
69
70/*
71 * Copyright (C) 1997 and 1998 WIDE Project.
72 * All rights reserved.
73 *
74 * Redistribution and use in source and binary forms, with or without
75 * modification, are permitted provided that the following conditions
76 * are met:
77 * 1. Redistributions of source code must retain the above copyright
78 * notice, this list of conditions and the following disclaimer.
79 * 2. Redistributions in binary form must reproduce the above copyright
80 * notice, this list of conditions and the following disclaimer in the
81 * documentation and/or other materials provided with the distribution.
82 * 3. Neither the name of the project nor the names of its contributors
83 * may be used to endorse or promote products derived from this software
84 * without specific prior written permission.
85 *
86 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
87 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
88 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
89 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
90 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
91 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
92 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
93 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
94 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
95 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
96 * SUCH DAMAGE.
97 */
98
99#ifdef NO_LONG_LONG
100# define LLF "%ld"
101# define LLFP(x) "%" x "ld"
102# define LLT long
103# define ULLF "%lu"
104# define ULLFP(x) "%" x "lu"
105# define ULLT unsigned long
106# define STRTOLL(x,y,z) strtol(x,y,z)
107# define LLTMIN LONG_MIN
108# define LLTMAX LONG_MAX
109#else
110# define LLF "%lld"
111# define LLFP(x) "%" x "lld"
112# define LLT long long
113# define ULLF "%llu"
114# define ULLFP(x) "%" x "llu"
115# define ULLT unsigned long long
116# define STRTOLL(x,y,z) strtoll(x,y,z)
117# define LLTMIN LLONG_MIN
118# define LLTMAX LLONG_MAX
119#endif
120
121#define FTP_BUFLEN 512
122
123void abor(void);
124void blkfree(char **);
125void closedataconn(FILE *);
126char *conffilename(const char *);
127char **copyblk(char **);
128void count_users(void);
129void cprintf(FILE *, const char *, ...)
130 __attribute__((__format__(__printf__, 2, 3)));
131void cwd(const char *);
132FILE *dataconn(const char *, off_t, const char *);
133void delete(const char *);
134int display_file(const char *, int);
135char **do_conversion(const char *);
136void dologout(int);
137void fatal(const char *);
138void feat(void);
139void format_path(char *, const char *);
140int ftpd_pclose(FILE *);
141FILE *ftpd_popen(char *[], const char *, int);
142char *getline(char *, int, FILE *);
143void init_curclass(void);
144void logxfer(const char *, off_t, const char *, const char *,
145 const struct timeval *, const char *);
146struct tab *lookup(struct tab *, const char *);
147void makedir(const char *);
148void mlsd(const char *);
149void mlst(const char *);
150void opts(const char *);
151void parse_conf(const char *);
152void pass(const char *);
153void passive(void);
154int lpsvproto2af(int);
155int af2lpsvproto(int);
156int epsvproto2af(int);
157int af2epsvproto(int);
158void long_passive(char *, int);
159int extended_port(const char *);
160void epsv_protounsupp(const char *);
161void perror_reply(int, const char *);
162void pwd(void);
163void removedir(const char *);
164void renamecmd(const char *, const char *);
165char *renamefrom(const char *);
166void reply(int, const char *, ...)
167 __attribute__((__format__(__printf__, 2, 3)));
168void retrieve(char *[], const char *);
169void send_file_list(const char *);
170void show_chdir_messages(int);
171void sizecmd(const char *);
172void statcmd(void);
173void statfilecmd(const char *);
174void statxfer(void);
175void store(const char *, const char *, int);
176void user(const char *);
177char *xstrdup(const char *);
178void yyerror(char *);
179
180#ifdef SUPPORT_UTMP
181struct utmp;
182
183void ftpd_logwtmp(const char *, const char *, const char *);
184void ftpd_login(const struct utmp *ut);
185int ftpd_logout(const char *line);
186#endif
187
188#ifdef SUPPORT_UTMPX
189struct utmpx;
190
191void ftpd_loginx(const struct utmpx *);
192void ftpd_logwtmpx(const char *, const char *, const char *, int, int);
193#endif
194
195#include <netinet/in.h>
196
197#if defined(__NetBSD__)
198# define HAVE_SETPROCTITLE 1
199# define HAVE_SOCKADDR_SA_LEN 1
200#endif
201
202struct sockinet {
203 union sockunion {
204 struct sockaddr_in su_sin;
205#ifdef INET6
206 struct sockaddr_in6 su_sin6;
207#endif
208 } si_su;
209#if !HAVE_SOCKADDR_SA_LEN
210 int si_len;
211#endif
212};
213
214#if !HAVE_SOCKADDR_SA_LEN
215# define su_len si_len
216#else
217# define su_len si_su.su_sin.sin_len
218#endif
219#define su_addr si_su.su_sin.sin_addr
220#define su_family si_su.su_sin.sin_family
221#define su_port si_su.su_sin.sin_port
222#ifdef INET6
223# define su_6addr si_su.su_sin6.sin6_addr
224# define su_scope_id si_su.su_sin6.sin6_scope_id
225#endif
226
227struct tab {
228 char *name;
229 short token;
230 short state;
231 short flags; /* 1 if command implemented, 2 if has options,
232 4 if can occur OOB */
233 char *help;
234 char *options;
235};
236
237struct ftpconv {
238 struct ftpconv *next;
239 char *suffix; /* Suffix of requested name */
240 char *types; /* Valid file types */
241 char *disable; /* File to disable conversions */
242 char *command; /* Command to do the conversion */
243};
244
245typedef enum {
246 CLASS_GUEST,
247 CLASS_CHROOT,
248 CLASS_REAL
249} class_ft;
250
251typedef enum {
252 FLAG_checkportcmd = 1<<0, /* Check port commands */
253 FLAG_denyquick = 1<<1, /* Check ftpusers(5) before PASS */
254 FLAG_modify = 1<<2, /* Allow CHMOD, DELE, MKD, RMD, RNFR,
255 UMASK */
256 FLAG_passive = 1<<3, /* Allow PASV mode */
257 FLAG_private = 1<<4, /* Don't publish class info in STAT */
258 FLAG_sanenames = 1<<5, /* Restrict names of uploaded files */
259 FLAG_upload = 1<<6, /* As per modify, but also allow
260 APPE, STOR, STOU */
261} classflag_t;
262
263#define CURCLASS_FLAGS_SET(x) (curclass.flags |= (FLAG_ ## x))
264#define CURCLASS_FLAGS_CLR(x) (curclass.flags &= ~(FLAG_ ## x))
265#define CURCLASS_FLAGS_ISSET(x) (curclass.flags & (FLAG_ ## x))
266
267struct ftpclass {
268 struct sockinet advertise; /* PASV address to advertise as */
269 char *chroot; /* Directory to chroot(2) to at login */
270 char *classname; /* Current class */
271 struct ftpconv *conversions; /* List of conversions */
272 char *display; /* File to display upon chdir */
273 char *homedir; /* Directory to chdir(2) to at login */
274 classflag_t flags; /* Flags; see classflag_t above */
275 LLT limit; /* Max connections (-1 = unlimited) */
276 char *limitfile; /* File to display if limit reached */
277 LLT maxfilesize; /* Maximum file size of uploads */
278 LLT maxrateget; /* Maximum get transfer rate throttle */
279 LLT maxrateput; /* Maximum put transfer rate throttle */
280 LLT maxtimeout; /* Maximum permitted timeout */
281 char *motd; /* MotD file to display after login */
282 char *notify; /* Files to notify about upon chdir */
283 LLT portmin; /* Minumum port for passive mode */
284 LLT portmax; /* Maximum port for passive mode */
285 LLT rateget; /* Get (RETR) transfer rate throttle */
286 LLT rateput; /* Put (STOR) transfer rate throttle */
287 LLT timeout; /* Default timeout */
288 class_ft type; /* Class type */
289 mode_t umask; /* Umask to use */
290 LLT mmapsize; /* mmap window size */
291 LLT readsize; /* data read size */
292 LLT writesize; /* data write size */
293 LLT sendbufsize; /* SO_SNDBUF size */
294 LLT sendlowat; /* SO_SNDLOWAT size */
295};
296
297extern void ftp_loop(void) __attribute__ ((noreturn));
298extern void ftp_handle_line(char *);
299
300#ifndef GLOBAL
301#define GLOBAL extern
302#endif
303
304
305GLOBAL struct sockinet ctrl_addr;
306GLOBAL struct sockinet data_dest;
307GLOBAL struct sockinet data_source;
308GLOBAL struct sockinet his_addr;
309GLOBAL struct sockinet pasv_addr;
310GLOBAL int connections;
311GLOBAL struct ftpclass curclass;
312GLOBAL int debug;
313GLOBAL char *emailaddr;
314GLOBAL int form;
315GLOBAL int gidcount; /* number of entries in gidlist[] */
316GLOBAL gid_t *gidlist;
317GLOBAL int hasyyerrored;
318GLOBAL char hostname[MAXHOSTNAMELEN+1];
319GLOBAL char homedir[MAXPATHLEN];
320#ifdef KERBEROS5
321GLOBAL krb5_context kcontext;
322#endif
323GLOBAL int logged_in;
324GLOBAL int logging;
325GLOBAL int pdata; /* for passive mode */
326#if HAVE_SETPROCTITLE
327GLOBAL char proctitle[BUFSIZ]; /* initial part of title */
328#endif
329GLOBAL struct passwd *pw;
330GLOBAL int quietmessages;
331GLOBAL char remotehost[MAXHOSTNAMELEN+1];
332GLOBAL off_t restart_point;
333GLOBAL char tmpline[FTP_BUFLEN];
334GLOBAL int type;
335GLOBAL int usedefault; /* for data transfers */
336GLOBAL const char *version;
337GLOBAL int is_oob;
338
339 /* total file data bytes */
340GLOBAL off_t total_data_in, total_data_out, total_data;
341 /* total number of data files */
342GLOBAL off_t total_files_in, total_files_out, total_files;
343 /* total bytes */
344GLOBAL off_t total_bytes_in, total_bytes_out, total_bytes;
345 /* total number of xfers */
346GLOBAL off_t total_xfers_in, total_xfers_out, total_xfers;
347
348extern struct tab cmdtab[];
349
350#define INTERNAL_LS "/bin/ls"
351
352
353#define CMD_IMPLEMENTED(x) ((x)->flags != 0)
354#define CMD_HAS_OPTIONS(x) ((x)->flags & 0x2)
355#define CMD_OOB(x) ((x)->flags & 0x4)
356
357#define CPUTC(c, f) do { \
358 putc(c, f); total_bytes++; total_bytes_out++; \
359 } while (0);
360
361#define CURCLASSTYPE curclass.type == CLASS_GUEST ? "GUEST" : \
362 curclass.type == CLASS_CHROOT ? "CHROOT" : \
363 curclass.type == CLASS_REAL ? "REAL" : \
364 "<unknown>"
365
366#define ISDOTDIR(x) (x[0] == '.' && x[1] == '\0')
367#define ISDOTDOTDIR(x) (x[0] == '.' && x[1] == '.' && x[2] == '\0')
368
369#define EMPTYSTR(p) ((p) == NULL || *(p) == '\0')
370#define NEXTWORD(P, W) do { \
371 (W) = strsep(&(P), " \t"); \
372 } while ((W) != NULL && *(W) == '\0')
373#define PLURAL(s) ((s) == 1 ? "" : "s")
374#define REASSIGN(X,Y) do { if (X) free(X); (X)=(Y); } while (/*CONSTCOND*/0)
375
376#ifndef IPPORT_ANONMAX
377# define IPPORT_ANONMAX 65535
378#endif