Commit | Line | Data |
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aeb2545d | 1 | /* |
dc45ba8c | 2 | * Copyright (c) 1983 Eric P. Allman |
bee79b64 KB |
3 | * Copyright (c) 1988 Regents of the University of California. |
4 | * All rights reserved. | |
5 | * | |
417f7a11 | 6 | * %sccs.include.redist.c% |
bee79b64 | 7 | */ |
aeb2545d DF |
8 | |
9 | #ifndef lint | |
10 | char copyright[] = | |
bee79b64 | 11 | "@(#) Copyright (c) 1988 Regents of the University of California.\n\ |
aeb2545d | 12 | All rights reserved.\n"; |
bee79b64 | 13 | #endif /* not lint */ |
aeb2545d DF |
14 | |
15 | #ifndef lint | |
1627a785 | 16 | static char sccsid[] = "@(#)main.c 6.7 (Berkeley) %G%"; |
bee79b64 | 17 | #endif /* not lint */ |
aeb2545d | 18 | |
137c2d1f KB |
19 | #define _DEFINE |
20 | ||
1627a785 | 21 | #include <unistd.h> |
5bec1980 | 22 | #include <sys/file.h> |
f2e44ded | 23 | #include <sys/stat.h> |
137c2d1f KB |
24 | #include <signal.h> |
25 | #include <sgtty.h> | |
26 | #include "sendmail.h" | |
27 | #include <arpa/nameser.h> | |
28 | #include <resolv.h> | |
b3cbe40f | 29 | |
17a67c62 | 30 | # ifdef lint |
2e3062fe | 31 | char edata, end; |
17a67c62 EA |
32 | # endif lint |
33 | ||
b3cbe40f | 34 | /* |
96faada8 | 35 | ** SENDMAIL -- Post mail to a set of destinations. |
b3cbe40f EA |
36 | ** |
37 | ** This is the basic mail router. All user mail programs should | |
96faada8 | 38 | ** call this routine to actually deliver mail. Sendmail in |
b3cbe40f EA |
39 | ** turn calls a bunch of mail servers that do the real work of |
40 | ** delivering the mail. | |
41 | ** | |
3199e4f3 EA |
42 | ** Sendmail is driven by tables read in from /usr/lib/sendmail.cf |
43 | ** (read by readcf.c). Some more static configuration info, | |
44 | ** including some code that you may want to tailor for your | |
45 | ** installation, is in conf.c. You may also want to touch | |
46 | ** daemon.c (if you have some other IPC mechanism), acct.c | |
47 | ** (to change your accounting), names.c (to adjust the name | |
48 | ** server mechanism). | |
b3cbe40f EA |
49 | ** |
50 | ** Usage: | |
7338e3d4 | 51 | ** /usr/lib/sendmail [flags] addr ... |
b3cbe40f | 52 | ** |
7338e3d4 | 53 | ** See the associated documentation for details. |
b3cbe40f | 54 | ** |
b3cbe40f | 55 | ** Author: |
7338e3d4 EA |
56 | ** Eric Allman, UCB/INGRES (until 10/81) |
57 | ** Britton-Lee, Inc., purveyors of fine | |
58 | ** database computers (from 11/81) | |
ce46a48a | 59 | ** Now back at UCB at the Mammoth project. |
7338e3d4 EA |
60 | ** The support of the INGRES Project and Britton-Lee is |
61 | ** gratefully acknowledged. Britton-Lee in | |
62 | ** particular had absolutely nothing to gain from | |
63 | ** my involvement in this project. | |
b3cbe40f EA |
64 | */ |
65 | ||
66 | ||
83f674d8 | 67 | int NextMailer; /* "free" index into Mailer struct */ |
912acb74 | 68 | char *FullName; /* sender's full name */ |
be2fcca9 | 69 | ENVELOPE BlankEnvelope; /* a "blank" envelope */ |
2654b031 | 70 | ENVELOPE MainEnvelope; /* the envelope around the basic letter */ |
2e3062fe | 71 | ADDRESS NullAddress = /* a null address */ |
599d88d0 | 72 | { "", "", NULL, "" }; |
2e3062fe EA |
73 | |
74 | /* | |
75 | ** Pointers for setproctitle. | |
76 | ** This allows "ps" listings to give more useful information. | |
77 | ** These must be kept out of BSS for frozen configuration files | |
78 | ** to work. | |
79 | */ | |
80 | ||
81 | # ifdef SETPROCTITLE | |
82 | char **Argv = NULL; /* pointer to argument vector */ | |
83 | char *LastArgv = NULL; /* end of argv */ | |
f3d8f6d6 | 84 | # endif /* SETPROCTITLE */ |
b3cbe40f | 85 | |
ce46a48a EA |
86 | /* |
87 | ** The file in which to log raw recipient information. | |
88 | ** This is logged before aliasing, forwarding, and so forth so we | |
89 | ** can see how our addresses are being used. For example, this | |
90 | ** would give us the names of aliases (instead of what they alias | |
91 | ** to), the pre-MX hostnames, and so forth. | |
92 | ** | |
93 | ** This is specified on the command line, not in the config file, | |
94 | ** and is therefore really only useful for logging SMTP RCPTs. | |
95 | */ | |
96 | ||
97 | char *RcptLogFile = NULL; /* file name */ | |
98 | ||
f96fa7de EA |
99 | static void obsolete(); |
100 | ||
4aebfe5d EA |
101 | #ifdef DAEMON |
102 | #ifndef SMTP | |
103 | ERROR %%%% Cannot have daemon mode without SMTP %%%% ERROR | |
f3d8f6d6 EA |
104 | #endif /* SMTP */ |
105 | #endif /* DAEMON */ | |
4aebfe5d | 106 | |
2281a453 EA |
107 | #define MAXCONFIGLEVEL 3 /* highest config version level known */ |
108 | ||
e36705df | 109 | main(argc, argv, envp) |
b3cbe40f EA |
110 | int argc; |
111 | char **argv; | |
e36705df | 112 | char **envp; |
b3cbe40f EA |
113 | { |
114 | register char *p; | |
af04f6e4 | 115 | register char *q; |
acae5a9d | 116 | char **av; |
17df0fcb | 117 | char *locname; |
b3cbe40f | 118 | extern int finis(); |
b3cbe40f | 119 | extern char Version[]; |
b2d4b27a | 120 | char *ep, *from; |
b3cbe40f | 121 | typedef int (*fnptr)(); |
be2fcca9 | 122 | STAB *st; |
9e3c0a28 | 123 | register int i; |
d0a69620 | 124 | int j; |
4388720d | 125 | bool readconfig = TRUE; |
aba51985 | 126 | bool queuemode = FALSE; /* process queue requests */ |
43e0af62 | 127 | bool nothaw; |
66391bf0 | 128 | bool safecf = TRUE; |
be2fcca9 | 129 | static bool reenter = FALSE; |
4b26318e | 130 | char *argv0 = argv[0]; |
b2d4b27a | 131 | char jbuf[MAXHOSTNAMELEN]; /* holds MyHostName */ |
f96fa7de EA |
132 | extern int DtableSize; |
133 | extern int optind; | |
f6a0cc15 | 134 | extern bool safefile(); |
ed45aae1 | 135 | extern time_t convtime(); |
dd1fe05b | 136 | extern putheader(), putbody(); |
be2fcca9 | 137 | extern ENVELOPE *newenvelope(); |
0df908a9 | 138 | extern void intsig(); |
1dbda134 | 139 | extern char **myhostname(); |
22e6d6b8 | 140 | extern char *arpadate(); |
f96fa7de | 141 | extern char *optarg; |
b72377c6 | 142 | |
22659072 EA |
143 | /* |
144 | ** Check to see if we reentered. | |
145 | ** This would normally happen if e_putheader or e_putbody | |
146 | ** were NULL when invoked. | |
147 | */ | |
148 | ||
b72377c6 EA |
149 | if (reenter) |
150 | { | |
151 | syserr("main: reentered!"); | |
152 | abort(); | |
153 | } | |
154 | reenter = TRUE; | |
abae7b2d | 155 | extern ADDRESS *recipient(); |
17df0fcb | 156 | bool canrename; |
b3cbe40f | 157 | |
07c63e56 | 158 | #ifndef SYS5TZ |
140717b5 EA |
159 | /* enforce use of kernel-supplied time zone information */ |
160 | unsetenv("TZ"); | |
161 | #endif | |
60c0b7b2 | 162 | |
3eb4fac4 EA |
163 | /* in 4.4BSD, the table can be huge; impose a reasonable limit */ |
164 | DtableSize = getdtablesize(); | |
165 | if (DtableSize > 256) | |
166 | DtableSize = 256; | |
167 | ||
d15bd559 EA |
168 | /* |
169 | ** Be sure we have enough file descriptors. | |
59b65d0f | 170 | ** But also be sure that 0, 1, & 2 are open. |
d15bd559 EA |
171 | */ |
172 | ||
e1098041 | 173 | i = open("/dev/null", O_RDWR); |
59b65d0f EA |
174 | while (i >= 0 && i < 2) |
175 | i = dup(i); | |
66391bf0 | 176 | |
3eb4fac4 | 177 | i = DtableSize; |
1627a785 EA |
178 | while (--i > 0) |
179 | { | |
180 | if (i != STDIN_FILENO && i != STDOUT_FILENO && i != STDERR_FILENO) | |
181 | (void) close(i); | |
182 | } | |
d15bd559 EA |
183 | errno = 0; |
184 | ||
07adc4f5 RA |
185 | #ifdef LOG_MAIL |
186 | openlog("sendmail", LOG_PID, LOG_MAIL); | |
187 | #else | |
188 | openlog("sendmail", LOG_PID); | |
189 | #endif | |
190 | ||
8ff78b51 EA |
191 | /* |
192 | ** Set default values for variables. | |
193 | ** These cannot be in initialized data space. | |
194 | */ | |
195 | ||
196 | setdefaults(); | |
197 | ||
bb09c502 EA |
198 | /* set up the blank envelope */ |
199 | BlankEnvelope.e_puthdr = putheader; | |
200 | BlankEnvelope.e_putbody = putbody; | |
201 | BlankEnvelope.e_xfp = NULL; | |
2e3062fe | 202 | STRUCTCOPY(NullAddress, BlankEnvelope.e_from); |
bd575ea9 EA |
203 | STRUCTCOPY(BlankEnvelope, MainEnvelope); |
204 | CurEnv = &MainEnvelope; | |
bb09c502 | 205 | |
b2d4b27a KB |
206 | /* Handle any non-getoptable constructions. */ |
207 | obsolete(argv); | |
208 | ||
22659072 EA |
209 | /* |
210 | ** Do a quick prescan of the argument list. | |
211 | ** We do this to find out if we can potentially thaw the | |
212 | ** configuration file. If not, we do the thaw now so that | |
213 | ** the argument processing applies to this run rather than | |
214 | ** to the run that froze the configuration. | |
215 | */ | |
43e0af62 | 216 | nothaw = FALSE; |
a0431b8d EA |
217 | #define OPTIONS "b:C:cd:eF:f:h:Iimno:p:q:R:r:sTtv" |
218 | while ((j = getopt(argc, argv, OPTIONS)) != EOF) | |
f96fa7de EA |
219 | { |
220 | switch (j) | |
560a80d9 | 221 | { |
b2d4b27a KB |
222 | case 'b': |
223 | if (optarg[0] == 'z' && optarg[1] == '\0') | |
224 | nothaw = TRUE; | |
225 | break; | |
226 | ||
227 | case 'C': | |
228 | ConfFile = optarg; | |
0e306e7f EA |
229 | (void) setgid(getrgid()); |
230 | (void) setuid(getruid()); | |
66391bf0 | 231 | safecf = FALSE; |
43e0af62 | 232 | nothaw = TRUE; |
b2d4b27a KB |
233 | break; |
234 | ||
235 | case 'd': | |
43e0af62 | 236 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); |
b2d4b27a | 237 | tTflag(optarg); |
43e0af62 EA |
238 | setbuf(stdout, (char *) NULL); |
239 | printf("Version %s\n", Version); | |
b2d4b27a | 240 | break; |
43e0af62 | 241 | } |
f96fa7de | 242 | } |
2bc15c4e KB |
243 | |
244 | InChannel = stdin; | |
245 | OutChannel = stdout; | |
246 | ||
43e0af62 | 247 | if (!nothaw) |
4b26318e | 248 | readconfig = !thaw(FreezeFile, argv0); |
22659072 | 249 | |
42bbf376 EA |
250 | # ifdef SETPROCTITLE |
251 | /* | |
252 | ** Save start and extent of argv for setproctitle. | |
253 | */ | |
254 | ||
255 | Argv = argv; | |
3251a23d | 256 | if (--i > 0) |
577bce94 EA |
257 | LastArgv = envp[i - 1] + strlen(envp[i - 1]); |
258 | else | |
259 | LastArgv = argv[argc - 1] + strlen(argv[argc - 1]); | |
f3d8f6d6 | 260 | # endif /* SETPROCTITLE */ |
e36705df | 261 | |
b3cbe40f | 262 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) |
6e2f38be | 263 | (void) signal(SIGINT, intsig); |
eb211e2c | 264 | if (signal(SIGHUP, SIG_IGN) != SIG_IGN) |
6e2f38be EA |
265 | (void) signal(SIGHUP, intsig); |
266 | (void) signal(SIGTERM, intsig); | |
ed7382d3 | 267 | (void) signal(SIGPIPE, SIG_IGN); |
a0554f81 | 268 | OldUmask = umask(0); |
75f95954 | 269 | OpMode = MD_DELIVER; |
e673aad7 | 270 | MotherPid = getpid(); |
561c7c50 | 271 | FullName = getenv("NAME"); |
dd1fe05b | 272 | |
b3cbe40f EA |
273 | errno = 0; |
274 | from = NULL; | |
378e8da7 | 275 | |
4388720d | 276 | if (readconfig) |
1dbda134 | 277 | { |
4388720d EA |
278 | /* initialize some macros, etc. */ |
279 | initmacros(); | |
280 | ||
281 | /* hostname */ | |
282 | av = myhostname(jbuf, sizeof jbuf); | |
283 | if (jbuf[0] != '\0') | |
284 | { | |
dec0d30e EA |
285 | extern char *strchr(); |
286 | ||
43e0af62 EA |
287 | if (tTd(0, 4)) |
288 | printf("canonical name: %s\n", jbuf); | |
4388720d EA |
289 | p = newstr(jbuf); |
290 | define('w', p, CurEnv); | |
dec0d30e EA |
291 | |
292 | q = strchr(jbuf, '.'); | |
293 | if (q != NULL) | |
294 | { | |
1bc035b0 | 295 | *q++ = '\0'; |
dec0d30e | 296 | p = newstr(jbuf); |
1bc035b0 | 297 | define('m', q, CurEnv); |
dec0d30e | 298 | } |
4388720d EA |
299 | setclass('w', p); |
300 | } | |
301 | while (av != NULL && *av != NULL) | |
43e0af62 | 302 | { |
43e0af62 EA |
303 | if (tTd(0, 4)) |
304 | printf("\ta.k.a.: %s\n", *av); | |
4388720d | 305 | setclass('w', *av++); |
43e0af62 | 306 | } |
4388720d EA |
307 | |
308 | /* version */ | |
309 | define('v', Version, CurEnv); | |
1dbda134 | 310 | } |
378e8da7 EA |
311 | |
312 | /* current time */ | |
22e6d6b8 | 313 | define('b', arpadate((char *) NULL), CurEnv); |
378e8da7 | 314 | |
a691a4a6 | 315 | /* |
c1e24818 | 316 | ** Crack argv. |
a691a4a6 EA |
317 | */ |
318 | ||
acae5a9d | 319 | av = argv; |
f3d8f6d6 | 320 | p = strrchr(*av, '/'); |
26a3626c EA |
321 | if (p++ == NULL) |
322 | p = *av; | |
323 | if (strcmp(p, "newaliases") == 0) | |
75f95954 | 324 | OpMode = MD_INITALIAS; |
26a3626c | 325 | else if (strcmp(p, "mailq") == 0) |
75f95954 | 326 | OpMode = MD_PRINT; |
34fe0a9b EA |
327 | else if (strcmp(p, "smtpd") == 0) |
328 | OpMode = MD_DAEMON; | |
b2d4b27a KB |
329 | |
330 | optind = 1; | |
a0431b8d | 331 | while ((j = getopt(argc, argv, OPTIONS)) != EOF) |
f96fa7de EA |
332 | { |
333 | switch (j) | |
a691a4a6 | 334 | { |
75f95954 | 335 | case 'b': /* operations mode */ |
f96fa7de | 336 | switch (j = *optarg) |
c1e24818 | 337 | { |
75f95954 | 338 | case MD_DAEMON: |
908dc8db MK |
339 | # ifdef DAEMON |
340 | if (getuid() != 0) { | |
341 | usrerr("Permission denied"); | |
342 | exit (EX_USAGE); | |
343 | } | |
344 | (void) unsetenv("HOSTALIASES"); | |
345 | # else | |
2e15a2d8 MK |
346 | usrerr("Daemon mode not implemented"); |
347 | ExitStat = EX_USAGE; | |
75f95954 | 348 | break; |
f3d8f6d6 | 349 | # endif /* DAEMON */ |
75f95954 EA |
350 | case MD_SMTP: |
351 | # ifndef SMTP | |
2e15a2d8 MK |
352 | usrerr("I don't speak SMTP"); |
353 | ExitStat = EX_USAGE; | |
75f95954 | 354 | break; |
f3d8f6d6 | 355 | # endif /* SMTP */ |
75f95954 EA |
356 | case MD_DELIVER: |
357 | case MD_VERIFY: | |
358 | case MD_TEST: | |
359 | case MD_INITALIAS: | |
360 | case MD_PRINT: | |
361 | case MD_FREEZE: | |
b2d4b27a | 362 | OpMode = j; |
75f95954 EA |
363 | break; |
364 | ||
365 | default: | |
b2d4b27a | 366 | usrerr("Invalid operation mode %c", j); |
2e15a2d8 | 367 | ExitStat = EX_USAGE; |
75f95954 | 368 | break; |
c1e24818 EA |
369 | } |
370 | break; | |
371 | ||
560a80d9 | 372 | case 'C': /* select configuration file (already done) */ |
c1e24818 | 373 | break; |
a691a4a6 | 374 | |
43e0af62 | 375 | case 'd': /* debugging -- redo in case frozen */ |
c1e24818 | 376 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); |
b2d4b27a | 377 | tTflag(optarg); |
c1e24818 | 378 | setbuf(stdout, (char *) NULL); |
c1e24818 | 379 | break; |
b3cbe40f | 380 | |
b3cbe40f | 381 | case 'f': /* from address */ |
c1e24818 | 382 | case 'r': /* obsolete -f flag */ |
22659072 | 383 | if (from != NULL) |
b3cbe40f | 384 | { |
2e15a2d8 MK |
385 | usrerr("More than one \"from\" person"); |
386 | ExitStat = EX_USAGE; | |
b3cbe40f EA |
387 | break; |
388 | } | |
b2d4b27a | 389 | from = newstr(optarg); |
b3cbe40f EA |
390 | break; |
391 | ||
6da7b890 | 392 | case 'F': /* set full name */ |
b2d4b27a | 393 | FullName = newstr(optarg); |
6da7b890 EA |
394 | break; |
395 | ||
b3cbe40f | 396 | case 'h': /* hop count */ |
b2d4b27a KB |
397 | CurEnv->e_hopcount = strtol(optarg, &ep, 10); |
398 | if (*ep) | |
b3cbe40f | 399 | { |
b2d4b27a | 400 | usrerr("Bad hop count (%s)", optarg); |
2e15a2d8 | 401 | ExitStat = EX_USAGE; |
3110074f | 402 | break; |
b3cbe40f | 403 | } |
b3cbe40f | 404 | break; |
b3cbe40f | 405 | |
c1e24818 EA |
406 | case 'n': /* don't alias */ |
407 | NoAlias = TRUE; | |
d59b067a EA |
408 | break; |
409 | ||
c1e24818 | 410 | case 'o': /* set option */ |
b2d4b27a | 411 | setoption(*optarg, optarg + 1, FALSE, TRUE); |
14a39063 | 412 | break; |
cbdb7357 | 413 | |
b1e36c23 | 414 | case 'p': /* set protocol */ |
b2d4b27a | 415 | q = strchr(optarg, ':'); |
af04f6e4 EA |
416 | if (q != NULL) |
417 | *q++ = '\0'; | |
b2d4b27a KB |
418 | if (*optarg != '\0') |
419 | define('r', newstr(optarg), CurEnv); | |
af04f6e4 EA |
420 | if (*q != '\0') |
421 | define('s', newstr(q), CurEnv); | |
b1e36c23 EA |
422 | break; |
423 | ||
ed45aae1 | 424 | case 'q': /* run queue files at intervals */ |
884a20cb | 425 | # ifdef QUEUE |
f2e44ded EA |
426 | if (getuid() != 0) |
427 | { | |
428 | struct stat stbuf; | |
429 | ||
430 | /* check to see if we own the queue directory */ | |
431 | if (stat(QueueDir, &stbuf) < 0) | |
432 | syserr("main: cannot stat %s", QueueDir); | |
433 | if (stbuf.st_uid != getuid()) | |
434 | { | |
435 | /* nope, really a botch */ | |
436 | usrerr("Permission denied"); | |
437 | exit (EX_NOPERM); | |
438 | } | |
908dc8db MK |
439 | } |
440 | (void) unsetenv("HOSTALIASES"); | |
d0a69620 | 441 | FullName = NULL; |
aba51985 | 442 | queuemode = TRUE; |
b2d4b27a | 443 | QueueIntvl = convtime(optarg); |
f3d8f6d6 | 444 | # else /* QUEUE */ |
2e15a2d8 MK |
445 | usrerr("I don't know about queues"); |
446 | ExitStat = EX_USAGE; | |
f3d8f6d6 | 447 | # endif /* QUEUE */ |
ed45aae1 EA |
448 | break; |
449 | ||
c1e24818 EA |
450 | case 't': /* read recipients from message */ |
451 | GrabTo = TRUE; | |
452 | break; | |
453 | ||
454 | /* compatibility flags */ | |
c1e24818 EA |
455 | case 'c': /* connect to non-local mailers */ |
456 | case 'e': /* error message disposition */ | |
457 | case 'i': /* don't let dot stop me */ | |
458 | case 'm': /* send to me too */ | |
459 | case 'T': /* set timeout interval */ | |
460 | case 'v': /* give blow-by-blow description */ | |
a0431b8d | 461 | setoption(j, "T", FALSE, TRUE); |
35cc3fad EA |
462 | break; |
463 | ||
c1e24818 | 464 | case 's': /* save From lines in headers */ |
a0431b8d | 465 | setoption('f', "T", FALSE, TRUE); |
b3cbe40f | 466 | break; |
26a3626c EA |
467 | |
468 | # ifdef DBM | |
469 | case 'I': /* initialize alias DBM file */ | |
75f95954 | 470 | OpMode = MD_INITALIAS; |
26a3626c | 471 | break; |
ce46a48a EA |
472 | # endif /* DBM */ |
473 | ||
474 | case 'R': /* log raw recipient info */ | |
b2d4b27a KB |
475 | RcptLogFile = newstr(optarg); |
476 | break; | |
477 | ||
478 | default: | |
479 | ExitStat = EX_USAGE; | |
480 | finis(); | |
ce46a48a | 481 | break; |
b3cbe40f | 482 | } |
f96fa7de | 483 | } |
b2d4b27a | 484 | av += optind; |
b3cbe40f | 485 | |
836a1487 EA |
486 | #ifdef NAMED_BIND |
487 | if (tTd(8, 1)) | |
488 | _res.options |= RES_DEBUG; | |
489 | #endif | |
490 | ||
9e3c0a28 | 491 | /* |
2cce0c26 EA |
492 | ** Do basic initialization. |
493 | ** Read system control file. | |
179c1218 | 494 | ** Extract special fields for local use. |
9e3c0a28 EA |
495 | */ |
496 | ||
46f6ec52 | 497 | if (OpMode == MD_FREEZE || readconfig) |
a4076aed | 498 | readcf(ConfFile, safecf, CurEnv); |
22659072 | 499 | |
07c63e56 | 500 | #ifdef SYS5TZ |
ca4d0c0b EA |
501 | /* Enforce use of local time (null string overrides this) */ |
502 | if (TimeZoneSpec == NULL) | |
503 | unsetenv("TZ"); | |
504 | else if (TimeZoneSpec[0] != '\0') | |
505 | { | |
506 | p = xalloc(strlen(TimeZoneSpec) + 4); | |
507 | (void) strcpy(p, "TZ="); | |
508 | (void) strcat(p, TimeZoneSpec); | |
509 | putenv(p); | |
510 | } | |
511 | #endif | |
512 | ||
2281a453 EA |
513 | if (ConfigLevel > MAXCONFIGLEVEL) |
514 | { | |
515 | syserr("Warning: .cf version level (%d) exceeds program functionality (%d)", | |
516 | ConfigLevel, MAXCONFIGLEVEL); | |
517 | } | |
75f95954 | 518 | switch (OpMode) |
acae5a9d | 519 | { |
26a3626c | 520 | case MD_FREEZE: |
a9621daf | 521 | /* this is critical to avoid forgeries of the frozen config */ |
0e306e7f EA |
522 | (void) setgid(getgid()); |
523 | (void) setuid(getuid()); | |
a9621daf EA |
524 | |
525 | /* freeze the configuration */ | |
8fe4fb9b | 526 | freeze(FreezeFile); |
acae5a9d | 527 | exit(EX_OK); |
26a3626c EA |
528 | |
529 | case MD_INITALIAS: | |
530 | Verbose = TRUE; | |
531 | break; | |
13dfebea EA |
532 | |
533 | case MD_DAEMON: | |
534 | /* remove things that don't make sense in daemon mode */ | |
535 | FullName = NULL; | |
536 | break; | |
acae5a9d | 537 | } |
179c1218 | 538 | |
6130649c EA |
539 | /* do heuristic mode adjustment */ |
540 | if (Verbose) | |
75f95954 EA |
541 | { |
542 | /* turn off noconnect option */ | |
543 | setoption('c', "F", TRUE, FALSE); | |
544 | ||
545 | /* turn on interactive delivery */ | |
546 | setoption('d', "", TRUE, FALSE); | |
547 | } | |
6130649c | 548 | |
179c1218 | 549 | /* our name for SMTP codes */ |
a73ae8ac | 550 | expand("\001j", jbuf, &jbuf[sizeof jbuf - 1], CurEnv); |
57c97d4a | 551 | MyHostName = jbuf; |
d6a28dd8 | 552 | |
98e5062b | 553 | /* the indices of built-in mailers */ |
179c1218 EA |
554 | st = stab("local", ST_MAILER, ST_FIND); |
555 | if (st == NULL) | |
556 | syserr("No local mailer defined"); | |
557 | else | |
558 | LocalMailer = st->s_mailer; | |
98e5062b | 559 | |
179c1218 EA |
560 | st = stab("prog", ST_MAILER, ST_FIND); |
561 | if (st == NULL) | |
562 | syserr("No prog mailer defined"); | |
563 | else | |
564 | ProgMailer = st->s_mailer; | |
565 | ||
98e5062b EA |
566 | st = stab("*file*", ST_MAILER, ST_FIND); |
567 | if (st == NULL) | |
568 | syserr("No *file* mailer defined"); | |
569 | else | |
570 | FileMailer = st->s_mailer; | |
571 | ||
572 | st = stab("*include*", ST_MAILER, ST_FIND); | |
573 | if (st == NULL) | |
574 | syserr("No *include* mailer defined"); | |
575 | else | |
576 | InclMailer = st->s_mailer; | |
577 | ||
578 | ||
6bbaf971 EA |
579 | /* operate in queue directory */ |
580 | if (chdir(QueueDir) < 0) | |
581 | { | |
582 | syserr("cannot chdir(%s)", QueueDir); | |
583 | exit(EX_SOFTWARE); | |
584 | } | |
585 | ||
64912e7e | 586 | /* |
55f0da62 | 587 | ** Do operation-mode-dependent initialization. |
64912e7e EA |
588 | */ |
589 | ||
55f0da62 | 590 | switch (OpMode) |
64912e7e | 591 | { |
55f0da62 EA |
592 | case MD_PRINT: |
593 | /* print the queue */ | |
74f37936 | 594 | #ifdef QUEUE |
64912e7e EA |
595 | dropenvelope(CurEnv); |
596 | printqueue(); | |
597 | exit(EX_OK); | |
f3d8f6d6 | 598 | #else /* QUEUE */ |
74f37936 EA |
599 | usrerr("No queue to print"); |
600 | finis(); | |
f3d8f6d6 | 601 | #endif /* QUEUE */ |
8acb5142 | 602 | |
55f0da62 EA |
603 | case MD_INITALIAS: |
604 | /* initialize alias database */ | |
a4076aed | 605 | initaliases(AliasFile, TRUE, CurEnv); |
f4dbf345 | 606 | exit(EX_OK); |
cdb17311 | 607 | |
55f0da62 EA |
608 | case MD_DAEMON: |
609 | /* don't open alias database -- done in srvrsmtp */ | |
610 | break; | |
611 | ||
612 | default: | |
613 | /* open the alias database */ | |
a4076aed | 614 | initaliases(AliasFile, FALSE, CurEnv); |
55f0da62 EA |
615 | break; |
616 | } | |
617 | ||
9678c96d | 618 | if (tTd(0, 15)) |
9c6d4c70 | 619 | { |
f6a0cc15 | 620 | /* print configuration table (or at least part of it) */ |
9c6d4c70 EA |
621 | printrules(); |
622 | for (i = 0; i < MAXMAILERS; i++) | |
623 | { | |
624 | register struct mailer *m = Mailer[i]; | |
1dbda134 | 625 | int j; |
9c6d4c70 EA |
626 | |
627 | if (m == NULL) | |
628 | continue; | |
97ad25b6 EA |
629 | printf("mailer %d (%s): P=%s S=%d R=%d M=%ld F=", i, m->m_name, |
630 | m->m_mailer, m->m_s_rwset, m->m_r_rwset, | |
631 | m->m_maxsize); | |
1dbda134 EA |
632 | for (j = '\0'; j <= '\177'; j++) |
633 | if (bitnset(j, m->m_flags)) | |
0e306e7f | 634 | (void) putchar(j); |
1dbda134 | 635 | printf(" E="); |
b3ef02a2 | 636 | xputs(m->m_eol); |
72f91c2e EA |
637 | if (m->m_argv != NULL) |
638 | { | |
639 | char **a = m->m_argv; | |
640 | ||
641 | printf(" A="); | |
642 | while (*a != NULL) | |
643 | { | |
644 | if (a != m->m_argv) | |
645 | printf(" "); | |
646 | xputs(*a++); | |
647 | } | |
648 | } | |
b3ef02a2 | 649 | printf("\n"); |
9c6d4c70 EA |
650 | } |
651 | } | |
9c6d4c70 | 652 | |
be2fcca9 EA |
653 | /* |
654 | ** Switch to the main envelope. | |
655 | */ | |
656 | ||
657 | CurEnv = newenvelope(&MainEnvelope); | |
e6f08ab1 | 658 | MainEnvelope.e_flags = BlankEnvelope.e_flags; |
be2fcca9 | 659 | |
cf69a203 EA |
660 | /* |
661 | ** If test mode, read addresses from stdin and process. | |
662 | */ | |
663 | ||
75f95954 | 664 | if (OpMode == MD_TEST) |
cf69a203 | 665 | { |
dab2b390 | 666 | bool terminal = isatty(fileno(stdin)); |
cf69a203 EA |
667 | char buf[MAXLINE]; |
668 | ||
dab2b390 EA |
669 | if (terminal) |
670 | { | |
671 | printf("ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n"); | |
672 | printf("Enter <ruleset> <address>\n"); | |
673 | } | |
cf69a203 EA |
674 | for (;;) |
675 | { | |
676 | register char **pvp; | |
50435450 | 677 | char *q; |
50435450 | 678 | extern char *DelimChar; |
2ee7e9e0 | 679 | extern bool invalidaddr(); |
cf69a203 | 680 | |
dab2b390 EA |
681 | if (terminal) |
682 | printf("> "); | |
0e306e7f | 683 | (void) fflush(stdout); |
cf69a203 EA |
684 | if (fgets(buf, sizeof buf, stdin) == NULL) |
685 | finis(); | |
dab2b390 EA |
686 | if (!terminal) |
687 | printf("> %s", buf); | |
688 | if (buf[0] == '#') | |
689 | continue; | |
f90b4150 | 690 | for (p = buf; isspace(*p); p++) |
cf69a203 | 691 | continue; |
ecfd2c8e EA |
692 | q = p; |
693 | while (*p != '\0' && !isspace(*p)) | |
694 | p++; | |
cf69a203 | 695 | if (*p == '\0') |
2ee7e9e0 EA |
696 | { |
697 | printf("No address!\n"); | |
cf69a203 | 698 | continue; |
2ee7e9e0 | 699 | } |
50435450 | 700 | *p = '\0'; |
2ee7e9e0 | 701 | if (invalidaddr(p + 1)) |
2ee7e9e0 | 702 | continue; |
50435450 | 703 | do |
ecfd2c8e | 704 | { |
217a0102 EA |
705 | extern char **prescan(); |
706 | char pvpbuf[PSBUFSIZE]; | |
707 | ||
708 | pvp = prescan(++p, ',', pvpbuf); | |
50435450 | 709 | if (pvp == NULL) |
ecfd2c8e | 710 | continue; |
50435450 EA |
711 | p = q; |
712 | while (*p != '\0') | |
713 | { | |
714 | rewrite(pvp, atoi(p)); | |
715 | while (*p != '\0' && *p++ != ',') | |
716 | continue; | |
717 | } | |
718 | } while (*(p = DelimChar) != '\0'); | |
cf69a203 EA |
719 | } |
720 | } | |
721 | ||
e3cd595c EA |
722 | # ifdef QUEUE |
723 | /* | |
724 | ** If collecting stuff from the queue, go start doing that. | |
725 | */ | |
726 | ||
7b21425b | 727 | if (queuemode && OpMode != MD_DAEMON && QueueIntvl == 0) |
e3cd595c | 728 | { |
ca4d0c0b | 729 | runqueue(FALSE); |
e3cd595c EA |
730 | finis(); |
731 | } | |
f3d8f6d6 | 732 | # endif /* QUEUE */ |
e3cd595c | 733 | |
f6a0cc15 EA |
734 | /* |
735 | ** If a daemon, wait for a request. | |
736 | ** getrequests will always return in a child. | |
25b9d645 | 737 | ** If we should also be processing the queue, start |
19147b2d EA |
738 | ** doing it in background. |
739 | ** We check for any errors that might have happened | |
740 | ** during startup. | |
f6a0cc15 EA |
741 | */ |
742 | ||
75f95954 | 743 | if (OpMode == MD_DAEMON || QueueIntvl != 0) |
25b9d645 | 744 | { |
9678c96d | 745 | if (!tTd(0, 1)) |
58b27aa4 | 746 | { |
fcdf8200 | 747 | /* put us in background */ |
58b27aa4 EA |
748 | i = fork(); |
749 | if (i < 0) | |
750 | syserr("daemon: cannot fork"); | |
751 | if (i != 0) | |
752 | exit(0); | |
fcdf8200 EA |
753 | |
754 | /* get our pid right */ | |
d9162460 | 755 | MotherPid = getpid(); |
fcdf8200 EA |
756 | |
757 | /* disconnect from our controlling tty */ | |
d188728a | 758 | disconnect(TRUE); |
58b27aa4 | 759 | } |
7338e3d4 | 760 | |
25b9d645 EA |
761 | # ifdef QUEUE |
762 | if (queuemode) | |
f309127e | 763 | { |
ca4d0c0b | 764 | runqueue(TRUE); |
75f95954 | 765 | if (OpMode != MD_DAEMON) |
f309127e EA |
766 | for (;;) |
767 | pause(); | |
768 | } | |
f3d8f6d6 | 769 | # endif /* QUEUE */ |
7338e3d4 EA |
770 | dropenvelope(CurEnv); |
771 | ||
772 | #ifdef DAEMON | |
f6a0cc15 | 773 | getrequests(); |
2a16bae3 EA |
774 | |
775 | /* at this point we are in a child: reset state */ | |
75f95954 | 776 | OpMode = MD_SMTP; |
7338e3d4 | 777 | (void) newenvelope(CurEnv); |
912acb74 | 778 | openxscript(CurEnv); |
f3d8f6d6 | 779 | #endif /* DAEMON */ |
7338e3d4 | 780 | } |
88039044 EA |
781 | |
782 | # ifdef SMTP | |
783 | /* | |
784 | ** If running SMTP protocol, start collecting and executing | |
785 | ** commands. This will never return. | |
786 | */ | |
787 | ||
75f95954 | 788 | if (OpMode == MD_SMTP) |
a4076aed | 789 | smtp(CurEnv); |
f3d8f6d6 | 790 | # endif /* SMTP */ |
88039044 | 791 | |
f6a0cc15 | 792 | /* |
e6f08ab1 | 793 | ** Do basic system initialization and set the sender |
f6a0cc15 EA |
794 | */ |
795 | ||
a4076aed | 796 | initsys(CurEnv); |
b5958391 | 797 | setsender(from, CurEnv); |
a9e0e597 | 798 | |
0e1aa71e | 799 | if (*av == NULL && !GrabTo) |
e863b1fa | 800 | { |
2e3062fe EA |
801 | usrerr("Recipient names must be specified"); |
802 | ||
803 | /* collect body for UUCP return */ | |
804 | if (OpMode != MD_VERIFY) | |
a4076aed | 805 | collect(FALSE, CurEnv); |
e863b1fa EA |
806 | finis(); |
807 | } | |
75f95954 EA |
808 | if (OpMode == MD_VERIFY) |
809 | SendMode = SM_VERIFY; | |
b3cbe40f | 810 | |
b3cbe40f | 811 | /* |
d6b27179 | 812 | ** Scan argv and deliver the message to everyone. |
b3cbe40f EA |
813 | */ |
814 | ||
a4076aed | 815 | sendtoargv(av, CurEnv); |
b3cbe40f | 816 | |
72e9b3cc | 817 | /* if we have had errors sofar, arrange a meaningful exit stat */ |
d916f0ca | 818 | if (Errors > 0 && ExitStat == EX_OK) |
a4b004a6 | 819 | ExitStat = EX_USAGE; |
a4b004a6 | 820 | |
dc39c568 EA |
821 | /* |
822 | ** Read the input mail. | |
823 | */ | |
824 | ||
2654b031 | 825 | CurEnv->e_to = NULL; |
75f95954 | 826 | if (OpMode != MD_VERIFY || GrabTo) |
a4076aed | 827 | collect(FALSE, CurEnv); |
d829793b | 828 | errno = 0; |
35cc3fad | 829 | |
4e1f4d4b | 830 | /* collect statistics */ |
7338e3d4 EA |
831 | if (OpMode != MD_VERIFY) |
832 | markstats(CurEnv, (ADDRESS *) NULL); | |
b3cbe40f | 833 | |
9678c96d | 834 | if (tTd(1, 1)) |
2654b031 | 835 | printf("From person = \"%s\"\n", CurEnv->e_from.q_paddr); |
d6b27179 | 836 | |
b3cbe40f EA |
837 | /* |
838 | ** Actually send everything. | |
d6b27179 | 839 | ** If verifying, just ack. |
b3cbe40f EA |
840 | */ |
841 | ||
7338e3d4 EA |
842 | CurEnv->e_from.q_flags |= QDONTSEND; |
843 | CurEnv->e_to = NULL; | |
f7e74083 | 844 | sendall(CurEnv, SM_DEFAULT); |
b3cbe40f EA |
845 | |
846 | /* | |
847 | ** All done. | |
848 | */ | |
849 | ||
850 | finis(); | |
851 | } | |
852 | \f/* | |
853 | ** FINIS -- Clean up and exit. | |
854 | ** | |
b3cbe40f EA |
855 | ** Parameters: |
856 | ** none | |
857 | ** | |
858 | ** Returns: | |
859 | ** never | |
860 | ** | |
861 | ** Side Effects: | |
96faada8 | 862 | ** exits sendmail |
b3cbe40f EA |
863 | */ |
864 | ||
865 | finis() | |
866 | { | |
9678c96d | 867 | if (tTd(2, 1)) |
e6f08ab1 | 868 | printf("\n====finis: stat %d e_flags %o\n", ExitStat, CurEnv->e_flags); |
aba51985 | 869 | |
7338e3d4 | 870 | /* clean up temp files */ |
912acb74 | 871 | CurEnv->e_to = NULL; |
e6f08ab1 | 872 | dropenvelope(CurEnv); |
b3cbe40f | 873 | |
f2e44ded EA |
874 | /* flush any cached connections */ |
875 | mci_flush(); | |
876 | ||
7338e3d4 EA |
877 | /* post statistics */ |
878 | poststats(StatFile); | |
68f0b54c | 879 | |
7338e3d4 | 880 | /* and exit */ |
36a4e219 EA |
881 | # ifdef LOG |
882 | if (LogLevel > 11) | |
883 | syslog(LOG_DEBUG, "finis, pid=%d", getpid()); | |
f3d8f6d6 | 884 | # endif /* LOG */ |
c8ec8736 EA |
885 | if (ExitStat == EX_TEMPFAIL) |
886 | ExitStat = EX_OK; | |
b3cbe40f EA |
887 | exit(ExitStat); |
888 | } | |
889 | \f/* | |
6e2f38be EA |
890 | ** INTSIG -- clean up on interrupt |
891 | ** | |
7338e3d4 EA |
892 | ** This just arranges to exit. It pessimises in that it |
893 | ** may resend a message. | |
6e2f38be EA |
894 | ** |
895 | ** Parameters: | |
896 | ** none. | |
897 | ** | |
898 | ** Returns: | |
899 | ** none. | |
900 | ** | |
901 | ** Side Effects: | |
7338e3d4 | 902 | ** Unlocks the current job. |
6e2f38be EA |
903 | */ |
904 | ||
0df908a9 | 905 | void |
6e2f38be EA |
906 | intsig() |
907 | { | |
7338e3d4 EA |
908 | FileName = NULL; |
909 | unlockqueue(CurEnv); | |
910 | exit(EX_OK); | |
6e2f38be EA |
911 | } |
912 | \f/* | |
721fad23 EA |
913 | ** INITMACROS -- initialize the macro system |
914 | ** | |
915 | ** This just involves defining some macros that are actually | |
916 | ** used internally as metasymbols to be themselves. | |
917 | ** | |
918 | ** Parameters: | |
919 | ** none. | |
920 | ** | |
921 | ** Returns: | |
922 | ** none. | |
923 | ** | |
924 | ** Side Effects: | |
925 | ** initializes several macros to be themselves. | |
926 | */ | |
927 | ||
9dbc8d99 EA |
928 | struct metamac MetaMacros[] = |
929 | { | |
eca244ca | 930 | /* LHS pattern matching characters */ |
42fa5d67 EA |
931 | '*', MATCHZANY, '+', MATCHANY, '-', MATCHONE, |
932 | '=', MATCHCLASS, '~', MATCHNCLASS, | |
721fad23 EA |
933 | |
934 | /* these are RHS metasymbols */ | |
42fa5d67 EA |
935 | '#', CANONNET, '@', CANONHOST, ':', CANONUSER, |
936 | '>', CALLSUBR, | |
41173b8f | 937 | '{', MATCHLOOKUP, '}', MATCHELOOKUP, |
721fad23 | 938 | |
eca244ca | 939 | /* the conditional operations */ |
42fa5d67 | 940 | '?', CONDIF, '|', CONDELSE, '.', CONDFI, |
9dbc8d99 | 941 | |
eca244ca | 942 | /* and finally the hostname lookup characters */ |
42fa5d67 EA |
943 | '[', HOSTBEGIN, ']', HOSTEND, |
944 | '(', LOOKUPBEGIN, ')', LOOKUPEND, | |
eca244ca | 945 | |
9dbc8d99 | 946 | '\0' |
721fad23 EA |
947 | }; |
948 | ||
949 | initmacros() | |
950 | { | |
9dbc8d99 EA |
951 | register struct metamac *m; |
952 | char buf[5]; | |
953 | register int c; | |
721fad23 | 954 | |
9dbc8d99 EA |
955 | for (m = MetaMacros; m->metaname != '\0'; m++) |
956 | { | |
957 | buf[0] = m->metaval; | |
958 | buf[1] = '\0'; | |
7338e3d4 | 959 | define(m->metaname, newstr(buf), CurEnv); |
9dbc8d99 EA |
960 | } |
961 | buf[0] = MATCHREPL; | |
962 | buf[2] = '\0'; | |
963 | for (c = '0'; c <= '9'; c++) | |
964 | { | |
965 | buf[1] = c; | |
7338e3d4 | 966 | define(c, newstr(buf), CurEnv); |
9dbc8d99 | 967 | } |
721fad23 | 968 | } |
dd1fe05b | 969 | \f/* |
acae5a9d EA |
970 | ** FREEZE -- freeze BSS & allocated memory |
971 | ** | |
972 | ** This will be used to efficiently load the configuration file. | |
973 | ** | |
974 | ** Parameters: | |
8fe4fb9b | 975 | ** freezefile -- the name of the file to freeze to. |
acae5a9d EA |
976 | ** |
977 | ** Returns: | |
978 | ** none. | |
979 | ** | |
980 | ** Side Effects: | |
8fe4fb9b | 981 | ** Writes BSS and malloc'ed memory to freezefile |
acae5a9d EA |
982 | */ |
983 | ||
7338e3d4 | 984 | union frz |
acae5a9d | 985 | { |
7338e3d4 EA |
986 | char frzpad[BUFSIZ]; /* insure we are on a BUFSIZ boundary */ |
987 | struct | |
988 | { | |
989 | time_t frzstamp; /* timestamp on this freeze */ | |
990 | char *frzbrk; /* the current break */ | |
2e3062fe EA |
991 | char *frzedata; /* address of edata */ |
992 | char *frzend; /* address of end */ | |
7338e3d4 EA |
993 | char frzver[252]; /* sendmail version */ |
994 | } frzinfo; | |
acae5a9d EA |
995 | }; |
996 | ||
8fe4fb9b EA |
997 | freeze(freezefile) |
998 | char *freezefile; | |
acae5a9d EA |
999 | { |
1000 | int f; | |
7338e3d4 | 1001 | union frz fhdr; |
2e3062fe | 1002 | extern char edata, end; |
acae5a9d | 1003 | extern char *sbrk(); |
912acb74 | 1004 | extern char Version[]; |
acae5a9d | 1005 | |
8fe4fb9b | 1006 | if (freezefile == NULL) |
acae5a9d EA |
1007 | return; |
1008 | ||
1009 | /* try to open the freeze file */ | |
8fe4fb9b | 1010 | f = creat(freezefile, FileMode); |
acae5a9d EA |
1011 | if (f < 0) |
1012 | { | |
2e15a2d8 | 1013 | syserr("Cannot freeze %s", freezefile); |
acae5a9d EA |
1014 | errno = 0; |
1015 | return; | |
1016 | } | |
1017 | ||
1018 | /* build the freeze header */ | |
7338e3d4 EA |
1019 | fhdr.frzinfo.frzstamp = curtime(); |
1020 | fhdr.frzinfo.frzbrk = sbrk(0); | |
2e3062fe EA |
1021 | fhdr.frzinfo.frzedata = &edata; |
1022 | fhdr.frzinfo.frzend = &end; | |
0e306e7f | 1023 | (void) strcpy(fhdr.frzinfo.frzver, Version); |
acae5a9d EA |
1024 | |
1025 | /* write out the freeze header */ | |
611b763d | 1026 | if (write(f, (char *) &fhdr, sizeof fhdr) != sizeof fhdr || |
34fe0a9b EA |
1027 | write(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
1028 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
7338e3d4 | 1029 | { |
2e15a2d8 | 1030 | syserr("Cannot freeze %s", freezefile); |
7338e3d4 | 1031 | } |
acae5a9d EA |
1032 | |
1033 | /* fine, clean up */ | |
1034 | (void) close(f); | |
1035 | } | |
1036 | \f/* | |
1037 | ** THAW -- read in the frozen configuration file. | |
1038 | ** | |
1039 | ** Parameters: | |
8fe4fb9b | 1040 | ** freezefile -- the name of the file to thaw from. |
4b26318e | 1041 | ** binfile -- the name of the sendmail binary (ok to guess). |
acae5a9d EA |
1042 | ** |
1043 | ** Returns: | |
1044 | ** TRUE if it successfully read the freeze file. | |
1045 | ** FALSE otherwise. | |
1046 | ** | |
1047 | ** Side Effects: | |
8fe4fb9b | 1048 | ** reads freezefile in to BSS area. |
acae5a9d EA |
1049 | */ |
1050 | ||
4b26318e | 1051 | thaw(freezefile, binfile) |
8fe4fb9b | 1052 | char *freezefile; |
4b26318e | 1053 | char *binfile; |
acae5a9d EA |
1054 | { |
1055 | int f; | |
ccfed53c | 1056 | register char *p; |
7338e3d4 | 1057 | union frz fhdr; |
ccfed53c | 1058 | char hbuf[60]; |
4b26318e | 1059 | struct stat fst, sst; |
a59237a4 | 1060 | extern char edata, end; |
912acb74 | 1061 | extern char Version[]; |
17a67c62 | 1062 | extern caddr_t brk(); |
ccfed53c EA |
1063 | extern char **myhostname(); |
1064 | extern char *macvalue(); | |
acae5a9d | 1065 | |
8fe4fb9b | 1066 | if (freezefile == NULL) |
acae5a9d EA |
1067 | return (FALSE); |
1068 | ||
1069 | /* open the freeze file */ | |
8fe4fb9b | 1070 | f = open(freezefile, 0); |
acae5a9d EA |
1071 | if (f < 0) |
1072 | { | |
1073 | errno = 0; | |
1074 | return (FALSE); | |
1075 | } | |
1076 | ||
4b26318e EA |
1077 | if (fstat(f, &fst) < 0 || stat(ConfFile, &sst) < 0 || |
1078 | fst.st_mtime < sst.st_mtime) | |
1079 | { | |
1080 | syslog(LOG_WARNING, "Freeze file older than config file"); | |
1081 | (void) close(f); | |
1082 | return (FALSE); | |
1083 | } | |
1084 | ||
1085 | if (strchr(binfile, '/') != NULL && stat(binfile, &sst) == 0 && | |
1086 | fst.st_mtime < sst.st_mtime) | |
1087 | { | |
1088 | syslog(LOG_WARNING, "Freeze file older than binary file"); | |
1089 | (void) close(f); | |
1090 | return (FALSE); | |
1091 | } | |
1092 | ||
acae5a9d | 1093 | /* read in the header */ |
07adc4f5 RA |
1094 | if (read(f, (char *) &fhdr, sizeof fhdr) < sizeof fhdr) |
1095 | { | |
db281fbf | 1096 | syslog(LOG_WARNING, "Cannot read frozen config file"); |
07adc4f5 RA |
1097 | (void) close(f); |
1098 | return (FALSE); | |
1099 | } | |
db281fbf | 1100 | if (fhdr.frzinfo.frzedata != &edata || |
2e3062fe | 1101 | fhdr.frzinfo.frzend != &end || |
7338e3d4 | 1102 | strcmp(fhdr.frzinfo.frzver, Version) != 0) |
acae5a9d | 1103 | { |
07adc4f5 | 1104 | syslog(LOG_WARNING, "Wrong version of frozen config file"); |
acae5a9d EA |
1105 | (void) close(f); |
1106 | return (FALSE); | |
1107 | } | |
1108 | ||
1109 | /* arrange to have enough space */ | |
17a67c62 | 1110 | if (brk(fhdr.frzinfo.frzbrk) == (caddr_t) -1) |
acae5a9d | 1111 | { |
7338e3d4 | 1112 | syserr("Cannot break to %x", fhdr.frzinfo.frzbrk); |
acae5a9d EA |
1113 | (void) close(f); |
1114 | return (FALSE); | |
1115 | } | |
1116 | ||
1117 | /* now read in the freeze file */ | |
34fe0a9b EA |
1118 | if (read(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
1119 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
acae5a9d | 1120 | { |
07adc4f5 | 1121 | syserr("Cannot read frozen config file"); |
acae5a9d | 1122 | /* oops! we have trashed memory..... */ |
0e306e7f | 1123 | (void) write(2, "Cannot read freeze file\n", 24); |
7338e3d4 | 1124 | _exit(EX_SOFTWARE); |
acae5a9d EA |
1125 | } |
1126 | ||
1127 | (void) close(f); | |
ccfed53c EA |
1128 | |
1129 | /* verify that the host name was correct on the freeze */ | |
1130 | (void) myhostname(hbuf, sizeof hbuf); | |
1131 | p = macvalue('w', CurEnv); | |
1132 | if (p == NULL) | |
1133 | p = ""; | |
1134 | if (strcmp(hbuf, macvalue('w', CurEnv)) == 0) | |
1135 | return (TRUE); | |
1136 | syslog(LOG_WARNING, "Hostname changed since freeze (%s => %s)", | |
1137 | p, hbuf); | |
1138 | return (FALSE); | |
acae5a9d | 1139 | } |
813d8709 EA |
1140 | \f/* |
1141 | ** DISCONNECT -- remove our connection with any foreground process | |
1142 | ** | |
1143 | ** Parameters: | |
d188728a EA |
1144 | ** fulldrop -- if set, we should also drop the controlling |
1145 | ** TTY if possible -- this should only be done when | |
1146 | ** setting up the daemon since otherwise UUCP can | |
1147 | ** leave us trying to open a dialin, and we will | |
1148 | ** wait for the carrier. | |
813d8709 EA |
1149 | ** |
1150 | ** Returns: | |
1151 | ** none | |
1152 | ** | |
1153 | ** Side Effects: | |
1154 | ** Trys to insure that we are immune to vagaries of | |
1155 | ** the controlling tty. | |
1156 | */ | |
1157 | ||
d188728a EA |
1158 | disconnect(fulldrop) |
1159 | bool fulldrop; | |
813d8709 EA |
1160 | { |
1161 | int fd; | |
1162 | ||
e6f08ab1 | 1163 | if (tTd(52, 1)) |
b9accadd EA |
1164 | printf("disconnect: In %d Out %d\n", fileno(InChannel), |
1165 | fileno(OutChannel)); | |
e6f08ab1 | 1166 | if (tTd(52, 5)) |
813d8709 | 1167 | { |
e6f08ab1 EA |
1168 | printf("don't\n"); |
1169 | return; | |
813d8709 | 1170 | } |
813d8709 EA |
1171 | |
1172 | /* be sure we don't get nasty signals */ | |
0e306e7f EA |
1173 | (void) signal(SIGHUP, SIG_IGN); |
1174 | (void) signal(SIGINT, SIG_IGN); | |
1175 | (void) signal(SIGQUIT, SIG_IGN); | |
813d8709 EA |
1176 | |
1177 | /* we can't communicate with our caller, so.... */ | |
7338e3d4 EA |
1178 | HoldErrs = TRUE; |
1179 | ErrorMode = EM_MAIL; | |
813d8709 EA |
1180 | Verbose = FALSE; |
1181 | ||
1182 | /* all input from /dev/null */ | |
813d8709 | 1183 | if (InChannel != stdin) |
b9accadd EA |
1184 | { |
1185 | (void) fclose(InChannel); | |
1186 | InChannel = stdin; | |
1187 | } | |
1188 | (void) freopen("/dev/null", "r", stdin); | |
813d8709 EA |
1189 | |
1190 | /* output to the transcript */ | |
b9accadd | 1191 | if (OutChannel != stdout) |
813d8709 | 1192 | { |
b9accadd EA |
1193 | (void) fclose(OutChannel); |
1194 | OutChannel = stdout; | |
813d8709 | 1195 | } |
912acb74 EA |
1196 | if (CurEnv->e_xfp == NULL) |
1197 | CurEnv->e_xfp = fopen("/dev/null", "w"); | |
b9accadd EA |
1198 | (void) fflush(stdout); |
1199 | (void) close(1); | |
1200 | (void) close(2); | |
912acb74 | 1201 | while ((fd = dup(fileno(CurEnv->e_xfp))) < 2 && fd > 0) |
b9accadd | 1202 | continue; |
813d8709 | 1203 | |
e6f08ab1 | 1204 | /* drop our controlling TTY completely if possible */ |
d188728a | 1205 | if (fulldrop) |
e6f08ab1 | 1206 | { |
5229f34d | 1207 | (void) setsid(); |
afe907a4 | 1208 | #ifdef TIOCNOTTY |
d188728a EA |
1209 | fd = open("/dev/tty", 2); |
1210 | if (fd >= 0) | |
1211 | { | |
17a67c62 | 1212 | (void) ioctl(fd, (int) TIOCNOTTY, (char *) 0); |
d188728a EA |
1213 | (void) close(fd); |
1214 | } | |
17a67c62 | 1215 | (void) setpgrp(0, 0); |
afe907a4 | 1216 | #endif /* TIOCNOTTY */ |
70faa7c8 | 1217 | errno = 0; |
e6f08ab1 | 1218 | } |
e6f08ab1 | 1219 | |
813d8709 EA |
1220 | # ifdef LOG |
1221 | if (LogLevel > 11) | |
1222 | syslog(LOG_DEBUG, "in background, pid=%d", getpid()); | |
f3d8f6d6 | 1223 | # endif /* LOG */ |
813d8709 EA |
1224 | |
1225 | errno = 0; | |
1226 | } | |
b2d4b27a KB |
1227 | |
1228 | static void | |
1229 | obsolete(argv) | |
1230 | char *argv[]; | |
1231 | { | |
1232 | char *ap; | |
1233 | ||
1234 | while (ap = *++argv) | |
1235 | { | |
1236 | /* Return if "--" or not an option of any form. */ | |
1237 | if (ap[0] != '-' || ap[1] == '-') | |
1238 | return; | |
1239 | ||
1240 | /* If -C doesn't have an argument, use sendmail.cf. */ | |
1241 | #define __DEFPATH "sendmail.cf" | |
f96fa7de EA |
1242 | if (ap[1] == 'C' && ap[2] == '\0' && |
1243 | (argv[1] == NULL || argv[1][0] == '-')) | |
b2d4b27a KB |
1244 | { |
1245 | *argv = xalloc(sizeof(__DEFPATH) + 2); | |
1246 | argv[0][0] = '-'; | |
1247 | argv[0][1] = 'C'; | |
1248 | (void)strcpy(&argv[0][2], __DEFPATH); | |
1249 | } | |
f96fa7de EA |
1250 | |
1251 | /* If -q doesn't have an argument, run it once. */ | |
1252 | if (ap[1] == 'q' && ap[2] == '\0' && | |
1253 | (argv[1] == NULL || argv[1][0] == '-')) | |
1254 | *argv = "-q0"; | |
a0431b8d EA |
1255 | |
1256 | /* if -d doesn't have an argument, use 0-99.1 */ | |
1257 | if (ap[1] == 'd' && ap[2] == '\0' && | |
1258 | (argv[1] == NULL || argv[1][0] == '-')) | |
1259 | *argv = "-d0-99.1"; | |
b2d4b27a KB |
1260 | } |
1261 | } |