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 | |
f96fa7de | 16 | static char sccsid[] = "@(#)main.c 5.63 (Berkeley) %G%"; |
bee79b64 | 17 | #endif /* not lint */ |
aeb2545d | 18 | |
137c2d1f KB |
19 | #define _DEFINE |
20 | ||
5bec1980 | 21 | #include <sys/file.h> |
f2e44ded | 22 | #include <sys/stat.h> |
137c2d1f KB |
23 | #include <signal.h> |
24 | #include <sgtty.h> | |
25 | #include "sendmail.h" | |
26 | #include <arpa/nameser.h> | |
27 | #include <resolv.h> | |
b3cbe40f | 28 | |
17a67c62 | 29 | # ifdef lint |
2e3062fe | 30 | char edata, end; |
17a67c62 EA |
31 | # endif lint |
32 | ||
b3cbe40f | 33 | /* |
96faada8 | 34 | ** SENDMAIL -- Post mail to a set of destinations. |
b3cbe40f EA |
35 | ** |
36 | ** This is the basic mail router. All user mail programs should | |
96faada8 | 37 | ** call this routine to actually deliver mail. Sendmail in |
b3cbe40f EA |
38 | ** turn calls a bunch of mail servers that do the real work of |
39 | ** delivering the mail. | |
40 | ** | |
3199e4f3 EA |
41 | ** Sendmail is driven by tables read in from /usr/lib/sendmail.cf |
42 | ** (read by readcf.c). Some more static configuration info, | |
43 | ** including some code that you may want to tailor for your | |
44 | ** installation, is in conf.c. You may also want to touch | |
45 | ** daemon.c (if you have some other IPC mechanism), acct.c | |
46 | ** (to change your accounting), names.c (to adjust the name | |
47 | ** server mechanism). | |
b3cbe40f EA |
48 | ** |
49 | ** Usage: | |
7338e3d4 | 50 | ** /usr/lib/sendmail [flags] addr ... |
b3cbe40f | 51 | ** |
7338e3d4 | 52 | ** See the associated documentation for details. |
b3cbe40f | 53 | ** |
b3cbe40f | 54 | ** Author: |
7338e3d4 EA |
55 | ** Eric Allman, UCB/INGRES (until 10/81) |
56 | ** Britton-Lee, Inc., purveyors of fine | |
57 | ** database computers (from 11/81) | |
ce46a48a | 58 | ** Now back at UCB at the Mammoth project. |
7338e3d4 EA |
59 | ** The support of the INGRES Project and Britton-Lee is |
60 | ** gratefully acknowledged. Britton-Lee in | |
61 | ** particular had absolutely nothing to gain from | |
62 | ** my involvement in this project. | |
b3cbe40f EA |
63 | */ |
64 | ||
65 | ||
83f674d8 | 66 | int NextMailer; /* "free" index into Mailer struct */ |
912acb74 | 67 | char *FullName; /* sender's full name */ |
be2fcca9 | 68 | ENVELOPE BlankEnvelope; /* a "blank" envelope */ |
2654b031 | 69 | ENVELOPE MainEnvelope; /* the envelope around the basic letter */ |
2e3062fe | 70 | ADDRESS NullAddress = /* a null address */ |
599d88d0 | 71 | { "", "", NULL, "" }; |
2e3062fe EA |
72 | |
73 | /* | |
74 | ** Pointers for setproctitle. | |
75 | ** This allows "ps" listings to give more useful information. | |
76 | ** These must be kept out of BSS for frozen configuration files | |
77 | ** to work. | |
78 | */ | |
79 | ||
80 | # ifdef SETPROCTITLE | |
81 | char **Argv = NULL; /* pointer to argument vector */ | |
82 | char *LastArgv = NULL; /* end of argv */ | |
f3d8f6d6 | 83 | # endif /* SETPROCTITLE */ |
b3cbe40f | 84 | |
ce46a48a EA |
85 | /* |
86 | ** The file in which to log raw recipient information. | |
87 | ** This is logged before aliasing, forwarding, and so forth so we | |
88 | ** can see how our addresses are being used. For example, this | |
89 | ** would give us the names of aliases (instead of what they alias | |
90 | ** to), the pre-MX hostnames, and so forth. | |
91 | ** | |
92 | ** This is specified on the command line, not in the config file, | |
93 | ** and is therefore really only useful for logging SMTP RCPTs. | |
94 | */ | |
95 | ||
96 | char *RcptLogFile = NULL; /* file name */ | |
97 | ||
f96fa7de EA |
98 | static void obsolete(); |
99 | ||
4aebfe5d EA |
100 | #ifdef DAEMON |
101 | #ifndef SMTP | |
102 | ERROR %%%% Cannot have daemon mode without SMTP %%%% ERROR | |
f3d8f6d6 EA |
103 | #endif /* SMTP */ |
104 | #endif /* DAEMON */ | |
4aebfe5d | 105 | |
2281a453 EA |
106 | #define MAXCONFIGLEVEL 3 /* highest config version level known */ |
107 | ||
e36705df | 108 | main(argc, argv, envp) |
b3cbe40f EA |
109 | int argc; |
110 | char **argv; | |
e36705df | 111 | char **envp; |
b3cbe40f EA |
112 | { |
113 | register char *p; | |
af04f6e4 | 114 | register char *q; |
acae5a9d | 115 | char **av; |
17df0fcb | 116 | char *locname; |
b3cbe40f | 117 | extern int finis(); |
b3cbe40f | 118 | extern char Version[]; |
b2d4b27a | 119 | char *ep, *from; |
b3cbe40f | 120 | typedef int (*fnptr)(); |
be2fcca9 | 121 | STAB *st; |
9e3c0a28 | 122 | register int i; |
d0a69620 | 123 | int j; |
4388720d | 124 | bool readconfig = TRUE; |
aba51985 | 125 | bool queuemode = FALSE; /* process queue requests */ |
43e0af62 | 126 | bool nothaw; |
66391bf0 | 127 | bool safecf = TRUE; |
be2fcca9 | 128 | static bool reenter = FALSE; |
b2d4b27a | 129 | char jbuf[MAXHOSTNAMELEN]; /* holds MyHostName */ |
f96fa7de EA |
130 | extern int DtableSize; |
131 | extern int optind; | |
f6a0cc15 | 132 | extern bool safefile(); |
ed45aae1 | 133 | extern time_t convtime(); |
dd1fe05b | 134 | extern putheader(), putbody(); |
be2fcca9 | 135 | extern ENVELOPE *newenvelope(); |
0df908a9 | 136 | extern void intsig(); |
1dbda134 | 137 | extern char **myhostname(); |
22e6d6b8 | 138 | extern char *arpadate(); |
e36705df | 139 | extern char **environ; |
f96fa7de | 140 | extern char *optarg; |
b72377c6 | 141 | |
22659072 EA |
142 | /* |
143 | ** Check to see if we reentered. | |
144 | ** This would normally happen if e_putheader or e_putbody | |
145 | ** were NULL when invoked. | |
146 | */ | |
147 | ||
b72377c6 EA |
148 | if (reenter) |
149 | { | |
150 | syserr("main: reentered!"); | |
151 | abort(); | |
152 | } | |
153 | reenter = TRUE; | |
abae7b2d | 154 | extern ADDRESS *recipient(); |
17df0fcb | 155 | bool canrename; |
b3cbe40f | 156 | |
07c63e56 | 157 | #ifndef SYS5TZ |
140717b5 EA |
158 | /* enforce use of kernel-supplied time zone information */ |
159 | unsetenv("TZ"); | |
160 | #endif | |
60c0b7b2 | 161 | |
3eb4fac4 EA |
162 | /* in 4.4BSD, the table can be huge; impose a reasonable limit */ |
163 | DtableSize = getdtablesize(); | |
164 | if (DtableSize > 256) | |
165 | DtableSize = 256; | |
166 | ||
d15bd559 EA |
167 | /* |
168 | ** Be sure we have enough file descriptors. | |
59b65d0f | 169 | ** But also be sure that 0, 1, & 2 are open. |
d15bd559 EA |
170 | */ |
171 | ||
e1098041 | 172 | i = open("/dev/null", O_RDWR); |
59b65d0f EA |
173 | while (i >= 0 && i < 2) |
174 | i = dup(i); | |
66391bf0 | 175 | |
3eb4fac4 | 176 | i = DtableSize; |
66391bf0 | 177 | while (--i > 2) |
d15bd559 EA |
178 | (void) close(i); |
179 | errno = 0; | |
180 | ||
07adc4f5 RA |
181 | #ifdef LOG_MAIL |
182 | openlog("sendmail", LOG_PID, LOG_MAIL); | |
183 | #else | |
184 | openlog("sendmail", LOG_PID); | |
185 | #endif | |
186 | ||
8ff78b51 EA |
187 | /* |
188 | ** Set default values for variables. | |
189 | ** These cannot be in initialized data space. | |
190 | */ | |
191 | ||
192 | setdefaults(); | |
193 | ||
bb09c502 EA |
194 | /* set up the blank envelope */ |
195 | BlankEnvelope.e_puthdr = putheader; | |
196 | BlankEnvelope.e_putbody = putbody; | |
197 | BlankEnvelope.e_xfp = NULL; | |
2e3062fe | 198 | STRUCTCOPY(NullAddress, BlankEnvelope.e_from); |
bd575ea9 EA |
199 | STRUCTCOPY(BlankEnvelope, MainEnvelope); |
200 | CurEnv = &MainEnvelope; | |
bb09c502 | 201 | |
b2d4b27a KB |
202 | /* Handle any non-getoptable constructions. */ |
203 | obsolete(argv); | |
204 | ||
22659072 EA |
205 | /* |
206 | ** Do a quick prescan of the argument list. | |
207 | ** We do this to find out if we can potentially thaw the | |
208 | ** configuration file. If not, we do the thaw now so that | |
209 | ** the argument processing applies to this run rather than | |
210 | ** to the run that froze the configuration. | |
211 | */ | |
43e0af62 | 212 | nothaw = FALSE; |
f96fa7de EA |
213 | while ((j = getopt(argc, argv, "b:C:d:")) != EOF) |
214 | { | |
215 | switch (j) | |
560a80d9 | 216 | { |
b2d4b27a KB |
217 | case 'b': |
218 | if (optarg[0] == 'z' && optarg[1] == '\0') | |
219 | nothaw = TRUE; | |
220 | break; | |
221 | ||
222 | case 'C': | |
223 | ConfFile = optarg; | |
0e306e7f EA |
224 | (void) setgid(getrgid()); |
225 | (void) setuid(getruid()); | |
66391bf0 | 226 | safecf = FALSE; |
43e0af62 | 227 | nothaw = TRUE; |
b2d4b27a KB |
228 | break; |
229 | ||
230 | case 'd': | |
43e0af62 | 231 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); |
b2d4b27a | 232 | tTflag(optarg); |
43e0af62 EA |
233 | setbuf(stdout, (char *) NULL); |
234 | printf("Version %s\n", Version); | |
b2d4b27a | 235 | break; |
43e0af62 | 236 | } |
f96fa7de | 237 | } |
2bc15c4e KB |
238 | |
239 | InChannel = stdin; | |
240 | OutChannel = stdout; | |
241 | ||
43e0af62 | 242 | if (!nothaw) |
22659072 EA |
243 | readconfig = !thaw(FreezeFile); |
244 | ||
b2d4b27a KB |
245 | /* strip out "dangerous" environment variables */ |
246 | (void) unsetenv("FS"); | |
247 | for (i = 1; (p = envp[i++]) != NULL;) | |
d0a69620 | 248 | { |
b2d4b27a KB |
249 | if (strncmp(p, "LD_", 3) == 0) |
250 | { | |
f96fa7de EA |
251 | /* hack: change this name to be non-special */ |
252 | p[0] = '\201'; | |
d0a69620 | 253 | continue; |
b2d4b27a | 254 | } |
d0a69620 | 255 | } |
b2d4b27a | 256 | environ = envp; |
42bbf376 EA |
257 | |
258 | # ifdef SETPROCTITLE | |
259 | /* | |
260 | ** Save start and extent of argv for setproctitle. | |
261 | */ | |
262 | ||
263 | Argv = argv; | |
3251a23d | 264 | if (--i > 0) |
577bce94 EA |
265 | LastArgv = envp[i - 1] + strlen(envp[i - 1]); |
266 | else | |
267 | LastArgv = argv[argc - 1] + strlen(argv[argc - 1]); | |
f3d8f6d6 | 268 | # endif /* SETPROCTITLE */ |
e36705df | 269 | |
b3cbe40f | 270 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) |
6e2f38be | 271 | (void) signal(SIGINT, intsig); |
eb211e2c | 272 | if (signal(SIGHUP, SIG_IGN) != SIG_IGN) |
6e2f38be EA |
273 | (void) signal(SIGHUP, intsig); |
274 | (void) signal(SIGTERM, intsig); | |
ed7382d3 | 275 | (void) signal(SIGPIPE, SIG_IGN); |
a0554f81 | 276 | OldUmask = umask(0); |
75f95954 | 277 | OpMode = MD_DELIVER; |
e673aad7 | 278 | MotherPid = getpid(); |
561c7c50 | 279 | FullName = getenv("NAME"); |
dd1fe05b | 280 | |
b3cbe40f EA |
281 | errno = 0; |
282 | from = NULL; | |
378e8da7 | 283 | |
4388720d | 284 | if (readconfig) |
1dbda134 | 285 | { |
4388720d EA |
286 | /* initialize some macros, etc. */ |
287 | initmacros(); | |
288 | ||
289 | /* hostname */ | |
290 | av = myhostname(jbuf, sizeof jbuf); | |
291 | if (jbuf[0] != '\0') | |
292 | { | |
dec0d30e EA |
293 | extern char *strchr(); |
294 | ||
43e0af62 EA |
295 | if (tTd(0, 4)) |
296 | printf("canonical name: %s\n", jbuf); | |
4388720d EA |
297 | p = newstr(jbuf); |
298 | define('w', p, CurEnv); | |
dec0d30e EA |
299 | |
300 | q = strchr(jbuf, '.'); | |
301 | if (q != NULL) | |
302 | { | |
1bc035b0 | 303 | *q++ = '\0'; |
dec0d30e | 304 | p = newstr(jbuf); |
1bc035b0 | 305 | define('m', q, CurEnv); |
dec0d30e | 306 | } |
4388720d EA |
307 | setclass('w', p); |
308 | } | |
309 | while (av != NULL && *av != NULL) | |
43e0af62 | 310 | { |
43e0af62 EA |
311 | if (tTd(0, 4)) |
312 | printf("\ta.k.a.: %s\n", *av); | |
4388720d | 313 | setclass('w', *av++); |
43e0af62 | 314 | } |
4388720d EA |
315 | |
316 | /* version */ | |
317 | define('v', Version, CurEnv); | |
1dbda134 | 318 | } |
378e8da7 EA |
319 | |
320 | /* current time */ | |
22e6d6b8 | 321 | define('b', arpadate((char *) NULL), CurEnv); |
378e8da7 | 322 | |
a691a4a6 | 323 | /* |
c1e24818 | 324 | ** Crack argv. |
a691a4a6 EA |
325 | */ |
326 | ||
acae5a9d | 327 | av = argv; |
f3d8f6d6 | 328 | p = strrchr(*av, '/'); |
26a3626c EA |
329 | if (p++ == NULL) |
330 | p = *av; | |
331 | if (strcmp(p, "newaliases") == 0) | |
75f95954 | 332 | OpMode = MD_INITALIAS; |
26a3626c | 333 | else if (strcmp(p, "mailq") == 0) |
75f95954 | 334 | OpMode = MD_PRINT; |
34fe0a9b EA |
335 | else if (strcmp(p, "smtpd") == 0) |
336 | OpMode = MD_DAEMON; | |
b2d4b27a KB |
337 | |
338 | optind = 1; | |
f96fa7de EA |
339 | while ((j = getopt(argc, argv, "b:C:c:d:e:F:f:h:I:i:m:no:p:q:R:r:s:T:tv:")) != EOF) |
340 | { | |
341 | switch (j) | |
a691a4a6 | 342 | { |
75f95954 | 343 | case 'b': /* operations mode */ |
f96fa7de | 344 | switch (j = *optarg) |
c1e24818 | 345 | { |
75f95954 | 346 | case MD_DAEMON: |
908dc8db MK |
347 | # ifdef DAEMON |
348 | if (getuid() != 0) { | |
349 | usrerr("Permission denied"); | |
350 | exit (EX_USAGE); | |
351 | } | |
352 | (void) unsetenv("HOSTALIASES"); | |
353 | # else | |
2e15a2d8 MK |
354 | usrerr("Daemon mode not implemented"); |
355 | ExitStat = EX_USAGE; | |
75f95954 | 356 | break; |
f3d8f6d6 | 357 | # endif /* DAEMON */ |
75f95954 EA |
358 | case MD_SMTP: |
359 | # ifndef SMTP | |
2e15a2d8 MK |
360 | usrerr("I don't speak SMTP"); |
361 | ExitStat = EX_USAGE; | |
75f95954 | 362 | break; |
f3d8f6d6 | 363 | # endif /* SMTP */ |
75f95954 EA |
364 | case MD_DELIVER: |
365 | case MD_VERIFY: | |
366 | case MD_TEST: | |
367 | case MD_INITALIAS: | |
368 | case MD_PRINT: | |
369 | case MD_FREEZE: | |
b2d4b27a | 370 | OpMode = j; |
75f95954 EA |
371 | break; |
372 | ||
373 | default: | |
b2d4b27a | 374 | usrerr("Invalid operation mode %c", j); |
2e15a2d8 | 375 | ExitStat = EX_USAGE; |
75f95954 | 376 | break; |
c1e24818 EA |
377 | } |
378 | break; | |
379 | ||
560a80d9 | 380 | case 'C': /* select configuration file (already done) */ |
c1e24818 | 381 | break; |
a691a4a6 | 382 | |
43e0af62 | 383 | case 'd': /* debugging -- redo in case frozen */ |
c1e24818 | 384 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); |
b2d4b27a | 385 | tTflag(optarg); |
c1e24818 | 386 | setbuf(stdout, (char *) NULL); |
c1e24818 | 387 | break; |
b3cbe40f | 388 | |
b3cbe40f | 389 | case 'f': /* from address */ |
c1e24818 | 390 | case 'r': /* obsolete -f flag */ |
22659072 | 391 | if (from != NULL) |
b3cbe40f | 392 | { |
2e15a2d8 MK |
393 | usrerr("More than one \"from\" person"); |
394 | ExitStat = EX_USAGE; | |
b3cbe40f EA |
395 | break; |
396 | } | |
b2d4b27a | 397 | from = newstr(optarg); |
b3cbe40f EA |
398 | break; |
399 | ||
6da7b890 | 400 | case 'F': /* set full name */ |
b2d4b27a | 401 | FullName = newstr(optarg); |
6da7b890 EA |
402 | break; |
403 | ||
b3cbe40f | 404 | case 'h': /* hop count */ |
b2d4b27a KB |
405 | CurEnv->e_hopcount = strtol(optarg, &ep, 10); |
406 | if (*ep) | |
b3cbe40f | 407 | { |
b2d4b27a | 408 | usrerr("Bad hop count (%s)", optarg); |
2e15a2d8 | 409 | ExitStat = EX_USAGE; |
3110074f | 410 | break; |
b3cbe40f | 411 | } |
b3cbe40f | 412 | break; |
b3cbe40f | 413 | |
c1e24818 EA |
414 | case 'n': /* don't alias */ |
415 | NoAlias = TRUE; | |
d59b067a EA |
416 | break; |
417 | ||
c1e24818 | 418 | case 'o': /* set option */ |
b2d4b27a | 419 | setoption(*optarg, optarg + 1, FALSE, TRUE); |
14a39063 | 420 | break; |
cbdb7357 | 421 | |
b1e36c23 | 422 | case 'p': /* set protocol */ |
b2d4b27a | 423 | q = strchr(optarg, ':'); |
af04f6e4 EA |
424 | if (q != NULL) |
425 | *q++ = '\0'; | |
b2d4b27a KB |
426 | if (*optarg != '\0') |
427 | define('r', newstr(optarg), CurEnv); | |
af04f6e4 EA |
428 | if (*q != '\0') |
429 | define('s', newstr(q), CurEnv); | |
b1e36c23 EA |
430 | break; |
431 | ||
ed45aae1 | 432 | case 'q': /* run queue files at intervals */ |
884a20cb | 433 | # ifdef QUEUE |
f2e44ded EA |
434 | if (getuid() != 0) |
435 | { | |
436 | struct stat stbuf; | |
437 | ||
438 | /* check to see if we own the queue directory */ | |
439 | if (stat(QueueDir, &stbuf) < 0) | |
440 | syserr("main: cannot stat %s", QueueDir); | |
441 | if (stbuf.st_uid != getuid()) | |
442 | { | |
443 | /* nope, really a botch */ | |
444 | usrerr("Permission denied"); | |
445 | exit (EX_NOPERM); | |
446 | } | |
908dc8db MK |
447 | } |
448 | (void) unsetenv("HOSTALIASES"); | |
d0a69620 | 449 | FullName = NULL; |
aba51985 | 450 | queuemode = TRUE; |
b2d4b27a | 451 | QueueIntvl = convtime(optarg); |
f3d8f6d6 | 452 | # else /* QUEUE */ |
2e15a2d8 MK |
453 | usrerr("I don't know about queues"); |
454 | ExitStat = EX_USAGE; | |
f3d8f6d6 | 455 | # endif /* QUEUE */ |
ed45aae1 EA |
456 | break; |
457 | ||
c1e24818 EA |
458 | case 't': /* read recipients from message */ |
459 | GrabTo = TRUE; | |
460 | break; | |
461 | ||
462 | /* compatibility flags */ | |
c1e24818 EA |
463 | case 'c': /* connect to non-local mailers */ |
464 | case 'e': /* error message disposition */ | |
465 | case 'i': /* don't let dot stop me */ | |
466 | case 'm': /* send to me too */ | |
467 | case 'T': /* set timeout interval */ | |
468 | case 'v': /* give blow-by-blow description */ | |
b2d4b27a | 469 | setoption(j, optarg, FALSE, TRUE); |
35cc3fad EA |
470 | break; |
471 | ||
c1e24818 | 472 | case 's': /* save From lines in headers */ |
b2d4b27a | 473 | setoption('f', optarg, FALSE, TRUE); |
b3cbe40f | 474 | break; |
26a3626c EA |
475 | |
476 | # ifdef DBM | |
477 | case 'I': /* initialize alias DBM file */ | |
75f95954 | 478 | OpMode = MD_INITALIAS; |
26a3626c | 479 | break; |
ce46a48a EA |
480 | # endif /* DBM */ |
481 | ||
482 | case 'R': /* log raw recipient info */ | |
b2d4b27a KB |
483 | RcptLogFile = newstr(optarg); |
484 | break; | |
485 | ||
486 | default: | |
487 | ExitStat = EX_USAGE; | |
488 | finis(); | |
ce46a48a | 489 | break; |
b3cbe40f | 490 | } |
f96fa7de | 491 | } |
b2d4b27a | 492 | av += optind; |
b3cbe40f | 493 | |
836a1487 EA |
494 | #ifdef NAMED_BIND |
495 | if (tTd(8, 1)) | |
496 | _res.options |= RES_DEBUG; | |
497 | #endif | |
498 | ||
9e3c0a28 | 499 | /* |
2cce0c26 EA |
500 | ** Do basic initialization. |
501 | ** Read system control file. | |
179c1218 | 502 | ** Extract special fields for local use. |
9e3c0a28 EA |
503 | */ |
504 | ||
46f6ec52 | 505 | if (OpMode == MD_FREEZE || readconfig) |
a4076aed | 506 | readcf(ConfFile, safecf, CurEnv); |
22659072 | 507 | |
07c63e56 | 508 | #ifdef SYS5TZ |
ca4d0c0b EA |
509 | /* Enforce use of local time (null string overrides this) */ |
510 | if (TimeZoneSpec == NULL) | |
511 | unsetenv("TZ"); | |
512 | else if (TimeZoneSpec[0] != '\0') | |
513 | { | |
514 | p = xalloc(strlen(TimeZoneSpec) + 4); | |
515 | (void) strcpy(p, "TZ="); | |
516 | (void) strcat(p, TimeZoneSpec); | |
517 | putenv(p); | |
518 | } | |
519 | #endif | |
520 | ||
2281a453 EA |
521 | if (ConfigLevel > MAXCONFIGLEVEL) |
522 | { | |
523 | syserr("Warning: .cf version level (%d) exceeds program functionality (%d)", | |
524 | ConfigLevel, MAXCONFIGLEVEL); | |
525 | } | |
75f95954 | 526 | switch (OpMode) |
acae5a9d | 527 | { |
26a3626c | 528 | case MD_FREEZE: |
a9621daf | 529 | /* this is critical to avoid forgeries of the frozen config */ |
0e306e7f EA |
530 | (void) setgid(getgid()); |
531 | (void) setuid(getuid()); | |
a9621daf EA |
532 | |
533 | /* freeze the configuration */ | |
8fe4fb9b | 534 | freeze(FreezeFile); |
acae5a9d | 535 | exit(EX_OK); |
26a3626c EA |
536 | |
537 | case MD_INITALIAS: | |
538 | Verbose = TRUE; | |
539 | break; | |
13dfebea EA |
540 | |
541 | case MD_DAEMON: | |
542 | /* remove things that don't make sense in daemon mode */ | |
543 | FullName = NULL; | |
544 | break; | |
acae5a9d | 545 | } |
179c1218 | 546 | |
6130649c EA |
547 | /* do heuristic mode adjustment */ |
548 | if (Verbose) | |
75f95954 EA |
549 | { |
550 | /* turn off noconnect option */ | |
551 | setoption('c', "F", TRUE, FALSE); | |
552 | ||
553 | /* turn on interactive delivery */ | |
554 | setoption('d', "", TRUE, FALSE); | |
555 | } | |
6130649c | 556 | |
179c1218 | 557 | /* our name for SMTP codes */ |
a73ae8ac | 558 | expand("\001j", jbuf, &jbuf[sizeof jbuf - 1], CurEnv); |
57c97d4a | 559 | MyHostName = jbuf; |
d6a28dd8 | 560 | |
179c1218 EA |
561 | /* the indices of local and program mailers */ |
562 | st = stab("local", ST_MAILER, ST_FIND); | |
563 | if (st == NULL) | |
564 | syserr("No local mailer defined"); | |
565 | else | |
566 | LocalMailer = st->s_mailer; | |
567 | st = stab("prog", ST_MAILER, ST_FIND); | |
568 | if (st == NULL) | |
569 | syserr("No prog mailer defined"); | |
570 | else | |
571 | ProgMailer = st->s_mailer; | |
572 | ||
6bbaf971 EA |
573 | /* operate in queue directory */ |
574 | if (chdir(QueueDir) < 0) | |
575 | { | |
576 | syserr("cannot chdir(%s)", QueueDir); | |
577 | exit(EX_SOFTWARE); | |
578 | } | |
579 | ||
64912e7e | 580 | /* |
55f0da62 | 581 | ** Do operation-mode-dependent initialization. |
64912e7e EA |
582 | */ |
583 | ||
55f0da62 | 584 | switch (OpMode) |
64912e7e | 585 | { |
55f0da62 EA |
586 | case MD_PRINT: |
587 | /* print the queue */ | |
74f37936 | 588 | #ifdef QUEUE |
64912e7e EA |
589 | dropenvelope(CurEnv); |
590 | printqueue(); | |
591 | exit(EX_OK); | |
f3d8f6d6 | 592 | #else /* QUEUE */ |
74f37936 EA |
593 | usrerr("No queue to print"); |
594 | finis(); | |
f3d8f6d6 | 595 | #endif /* QUEUE */ |
8acb5142 | 596 | |
55f0da62 EA |
597 | case MD_INITALIAS: |
598 | /* initialize alias database */ | |
a4076aed | 599 | initaliases(AliasFile, TRUE, CurEnv); |
f4dbf345 | 600 | exit(EX_OK); |
cdb17311 | 601 | |
55f0da62 EA |
602 | case MD_DAEMON: |
603 | /* don't open alias database -- done in srvrsmtp */ | |
604 | break; | |
605 | ||
606 | default: | |
607 | /* open the alias database */ | |
a4076aed | 608 | initaliases(AliasFile, FALSE, CurEnv); |
55f0da62 EA |
609 | break; |
610 | } | |
611 | ||
9678c96d | 612 | if (tTd(0, 15)) |
9c6d4c70 | 613 | { |
f6a0cc15 | 614 | /* print configuration table (or at least part of it) */ |
9c6d4c70 EA |
615 | printrules(); |
616 | for (i = 0; i < MAXMAILERS; i++) | |
617 | { | |
618 | register struct mailer *m = Mailer[i]; | |
1dbda134 | 619 | int j; |
9c6d4c70 EA |
620 | |
621 | if (m == NULL) | |
622 | continue; | |
97ad25b6 EA |
623 | printf("mailer %d (%s): P=%s S=%d R=%d M=%ld F=", i, m->m_name, |
624 | m->m_mailer, m->m_s_rwset, m->m_r_rwset, | |
625 | m->m_maxsize); | |
1dbda134 EA |
626 | for (j = '\0'; j <= '\177'; j++) |
627 | if (bitnset(j, m->m_flags)) | |
0e306e7f | 628 | (void) putchar(j); |
1dbda134 | 629 | printf(" E="); |
b3ef02a2 | 630 | xputs(m->m_eol); |
72f91c2e EA |
631 | if (m->m_argv != NULL) |
632 | { | |
633 | char **a = m->m_argv; | |
634 | ||
635 | printf(" A="); | |
636 | while (*a != NULL) | |
637 | { | |
638 | if (a != m->m_argv) | |
639 | printf(" "); | |
640 | xputs(*a++); | |
641 | } | |
642 | } | |
b3ef02a2 | 643 | printf("\n"); |
9c6d4c70 EA |
644 | } |
645 | } | |
9c6d4c70 | 646 | |
be2fcca9 EA |
647 | /* |
648 | ** Switch to the main envelope. | |
649 | */ | |
650 | ||
651 | CurEnv = newenvelope(&MainEnvelope); | |
e6f08ab1 | 652 | MainEnvelope.e_flags = BlankEnvelope.e_flags; |
be2fcca9 | 653 | |
cf69a203 EA |
654 | /* |
655 | ** If test mode, read addresses from stdin and process. | |
656 | */ | |
657 | ||
75f95954 | 658 | if (OpMode == MD_TEST) |
cf69a203 | 659 | { |
dab2b390 | 660 | bool terminal = isatty(fileno(stdin)); |
cf69a203 EA |
661 | char buf[MAXLINE]; |
662 | ||
dab2b390 EA |
663 | if (terminal) |
664 | { | |
665 | printf("ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n"); | |
666 | printf("Enter <ruleset> <address>\n"); | |
667 | } | |
cf69a203 EA |
668 | for (;;) |
669 | { | |
670 | register char **pvp; | |
50435450 | 671 | char *q; |
50435450 | 672 | extern char *DelimChar; |
cf69a203 | 673 | |
dab2b390 EA |
674 | if (terminal) |
675 | printf("> "); | |
0e306e7f | 676 | (void) fflush(stdout); |
cf69a203 EA |
677 | if (fgets(buf, sizeof buf, stdin) == NULL) |
678 | finis(); | |
dab2b390 EA |
679 | if (!terminal) |
680 | printf("> %s", buf); | |
681 | if (buf[0] == '#') | |
682 | continue; | |
f90b4150 | 683 | for (p = buf; isspace(*p); p++) |
cf69a203 | 684 | continue; |
ecfd2c8e EA |
685 | q = p; |
686 | while (*p != '\0' && !isspace(*p)) | |
687 | p++; | |
cf69a203 EA |
688 | if (*p == '\0') |
689 | continue; | |
50435450 EA |
690 | *p = '\0'; |
691 | do | |
ecfd2c8e | 692 | { |
217a0102 EA |
693 | extern char **prescan(); |
694 | char pvpbuf[PSBUFSIZE]; | |
695 | ||
696 | pvp = prescan(++p, ',', pvpbuf); | |
50435450 | 697 | if (pvp == NULL) |
ecfd2c8e | 698 | continue; |
50435450 EA |
699 | p = q; |
700 | while (*p != '\0') | |
701 | { | |
702 | rewrite(pvp, atoi(p)); | |
703 | while (*p != '\0' && *p++ != ',') | |
704 | continue; | |
705 | } | |
706 | } while (*(p = DelimChar) != '\0'); | |
cf69a203 EA |
707 | } |
708 | } | |
709 | ||
e3cd595c EA |
710 | # ifdef QUEUE |
711 | /* | |
712 | ** If collecting stuff from the queue, go start doing that. | |
713 | */ | |
714 | ||
7b21425b | 715 | if (queuemode && OpMode != MD_DAEMON && QueueIntvl == 0) |
e3cd595c | 716 | { |
ca4d0c0b | 717 | runqueue(FALSE); |
e3cd595c EA |
718 | finis(); |
719 | } | |
f3d8f6d6 | 720 | # endif /* QUEUE */ |
e3cd595c | 721 | |
f6a0cc15 EA |
722 | /* |
723 | ** If a daemon, wait for a request. | |
724 | ** getrequests will always return in a child. | |
25b9d645 | 725 | ** If we should also be processing the queue, start |
19147b2d EA |
726 | ** doing it in background. |
727 | ** We check for any errors that might have happened | |
728 | ** during startup. | |
f6a0cc15 EA |
729 | */ |
730 | ||
75f95954 | 731 | if (OpMode == MD_DAEMON || QueueIntvl != 0) |
25b9d645 | 732 | { |
9678c96d | 733 | if (!tTd(0, 1)) |
58b27aa4 | 734 | { |
fcdf8200 | 735 | /* put us in background */ |
58b27aa4 EA |
736 | i = fork(); |
737 | if (i < 0) | |
738 | syserr("daemon: cannot fork"); | |
739 | if (i != 0) | |
740 | exit(0); | |
fcdf8200 EA |
741 | |
742 | /* get our pid right */ | |
d9162460 | 743 | MotherPid = getpid(); |
fcdf8200 EA |
744 | |
745 | /* disconnect from our controlling tty */ | |
d188728a | 746 | disconnect(TRUE); |
58b27aa4 | 747 | } |
7338e3d4 | 748 | |
25b9d645 EA |
749 | # ifdef QUEUE |
750 | if (queuemode) | |
f309127e | 751 | { |
ca4d0c0b | 752 | runqueue(TRUE); |
75f95954 | 753 | if (OpMode != MD_DAEMON) |
f309127e EA |
754 | for (;;) |
755 | pause(); | |
756 | } | |
f3d8f6d6 | 757 | # endif /* QUEUE */ |
7338e3d4 EA |
758 | dropenvelope(CurEnv); |
759 | ||
760 | #ifdef DAEMON | |
f6a0cc15 | 761 | getrequests(); |
2a16bae3 EA |
762 | |
763 | /* at this point we are in a child: reset state */ | |
75f95954 | 764 | OpMode = MD_SMTP; |
7338e3d4 | 765 | (void) newenvelope(CurEnv); |
912acb74 | 766 | openxscript(CurEnv); |
f3d8f6d6 | 767 | #endif /* DAEMON */ |
7338e3d4 | 768 | } |
88039044 EA |
769 | |
770 | # ifdef SMTP | |
771 | /* | |
772 | ** If running SMTP protocol, start collecting and executing | |
773 | ** commands. This will never return. | |
774 | */ | |
775 | ||
75f95954 | 776 | if (OpMode == MD_SMTP) |
a4076aed | 777 | smtp(CurEnv); |
f3d8f6d6 | 778 | # endif /* SMTP */ |
88039044 | 779 | |
f6a0cc15 | 780 | /* |
e6f08ab1 | 781 | ** Do basic system initialization and set the sender |
f6a0cc15 EA |
782 | */ |
783 | ||
a4076aed | 784 | initsys(CurEnv); |
b5958391 | 785 | setsender(from, CurEnv); |
a9e0e597 | 786 | |
0e1aa71e | 787 | if (*av == NULL && !GrabTo) |
e863b1fa | 788 | { |
2e3062fe EA |
789 | usrerr("Recipient names must be specified"); |
790 | ||
791 | /* collect body for UUCP return */ | |
792 | if (OpMode != MD_VERIFY) | |
a4076aed | 793 | collect(FALSE, CurEnv); |
e863b1fa EA |
794 | finis(); |
795 | } | |
75f95954 EA |
796 | if (OpMode == MD_VERIFY) |
797 | SendMode = SM_VERIFY; | |
b3cbe40f | 798 | |
b3cbe40f | 799 | /* |
d6b27179 | 800 | ** Scan argv and deliver the message to everyone. |
b3cbe40f EA |
801 | */ |
802 | ||
a4076aed | 803 | sendtoargv(av, CurEnv); |
b3cbe40f | 804 | |
72e9b3cc | 805 | /* if we have had errors sofar, arrange a meaningful exit stat */ |
d916f0ca | 806 | if (Errors > 0 && ExitStat == EX_OK) |
a4b004a6 | 807 | ExitStat = EX_USAGE; |
a4b004a6 | 808 | |
dc39c568 EA |
809 | /* |
810 | ** Read the input mail. | |
811 | */ | |
812 | ||
2654b031 | 813 | CurEnv->e_to = NULL; |
75f95954 | 814 | if (OpMode != MD_VERIFY || GrabTo) |
a4076aed | 815 | collect(FALSE, CurEnv); |
d829793b | 816 | errno = 0; |
35cc3fad | 817 | |
4e1f4d4b | 818 | /* collect statistics */ |
7338e3d4 EA |
819 | if (OpMode != MD_VERIFY) |
820 | markstats(CurEnv, (ADDRESS *) NULL); | |
b3cbe40f | 821 | |
9678c96d | 822 | if (tTd(1, 1)) |
2654b031 | 823 | printf("From person = \"%s\"\n", CurEnv->e_from.q_paddr); |
d6b27179 | 824 | |
b3cbe40f EA |
825 | /* |
826 | ** Actually send everything. | |
d6b27179 | 827 | ** If verifying, just ack. |
b3cbe40f EA |
828 | */ |
829 | ||
7338e3d4 EA |
830 | CurEnv->e_from.q_flags |= QDONTSEND; |
831 | CurEnv->e_to = NULL; | |
f7e74083 | 832 | sendall(CurEnv, SM_DEFAULT); |
b3cbe40f EA |
833 | |
834 | /* | |
835 | ** All done. | |
836 | */ | |
837 | ||
838 | finis(); | |
839 | } | |
840 | \f/* | |
841 | ** FINIS -- Clean up and exit. | |
842 | ** | |
b3cbe40f EA |
843 | ** Parameters: |
844 | ** none | |
845 | ** | |
846 | ** Returns: | |
847 | ** never | |
848 | ** | |
849 | ** Side Effects: | |
96faada8 | 850 | ** exits sendmail |
b3cbe40f EA |
851 | */ |
852 | ||
853 | finis() | |
854 | { | |
9678c96d | 855 | if (tTd(2, 1)) |
e6f08ab1 | 856 | printf("\n====finis: stat %d e_flags %o\n", ExitStat, CurEnv->e_flags); |
aba51985 | 857 | |
7338e3d4 | 858 | /* clean up temp files */ |
912acb74 | 859 | CurEnv->e_to = NULL; |
e6f08ab1 | 860 | dropenvelope(CurEnv); |
b3cbe40f | 861 | |
f2e44ded EA |
862 | /* flush any cached connections */ |
863 | mci_flush(); | |
864 | ||
7338e3d4 EA |
865 | /* post statistics */ |
866 | poststats(StatFile); | |
68f0b54c | 867 | |
7338e3d4 | 868 | /* and exit */ |
36a4e219 EA |
869 | # ifdef LOG |
870 | if (LogLevel > 11) | |
871 | syslog(LOG_DEBUG, "finis, pid=%d", getpid()); | |
f3d8f6d6 | 872 | # endif /* LOG */ |
c8ec8736 EA |
873 | if (ExitStat == EX_TEMPFAIL) |
874 | ExitStat = EX_OK; | |
b3cbe40f EA |
875 | exit(ExitStat); |
876 | } | |
877 | \f/* | |
6e2f38be EA |
878 | ** INTSIG -- clean up on interrupt |
879 | ** | |
7338e3d4 EA |
880 | ** This just arranges to exit. It pessimises in that it |
881 | ** may resend a message. | |
6e2f38be EA |
882 | ** |
883 | ** Parameters: | |
884 | ** none. | |
885 | ** | |
886 | ** Returns: | |
887 | ** none. | |
888 | ** | |
889 | ** Side Effects: | |
7338e3d4 | 890 | ** Unlocks the current job. |
6e2f38be EA |
891 | */ |
892 | ||
0df908a9 | 893 | void |
6e2f38be EA |
894 | intsig() |
895 | { | |
7338e3d4 EA |
896 | FileName = NULL; |
897 | unlockqueue(CurEnv); | |
898 | exit(EX_OK); | |
6e2f38be EA |
899 | } |
900 | \f/* | |
721fad23 EA |
901 | ** INITMACROS -- initialize the macro system |
902 | ** | |
903 | ** This just involves defining some macros that are actually | |
904 | ** used internally as metasymbols to be themselves. | |
905 | ** | |
906 | ** Parameters: | |
907 | ** none. | |
908 | ** | |
909 | ** Returns: | |
910 | ** none. | |
911 | ** | |
912 | ** Side Effects: | |
913 | ** initializes several macros to be themselves. | |
914 | */ | |
915 | ||
9dbc8d99 EA |
916 | struct metamac MetaMacros[] = |
917 | { | |
eca244ca | 918 | /* LHS pattern matching characters */ |
42fa5d67 EA |
919 | '*', MATCHZANY, '+', MATCHANY, '-', MATCHONE, |
920 | '=', MATCHCLASS, '~', MATCHNCLASS, | |
721fad23 EA |
921 | |
922 | /* these are RHS metasymbols */ | |
42fa5d67 EA |
923 | '#', CANONNET, '@', CANONHOST, ':', CANONUSER, |
924 | '>', CALLSUBR, | |
41173b8f | 925 | '{', MATCHLOOKUP, '}', MATCHELOOKUP, |
721fad23 | 926 | |
eca244ca | 927 | /* the conditional operations */ |
42fa5d67 | 928 | '?', CONDIF, '|', CONDELSE, '.', CONDFI, |
9dbc8d99 | 929 | |
eca244ca | 930 | /* and finally the hostname lookup characters */ |
42fa5d67 EA |
931 | '[', HOSTBEGIN, ']', HOSTEND, |
932 | '(', LOOKUPBEGIN, ')', LOOKUPEND, | |
eca244ca | 933 | |
9dbc8d99 | 934 | '\0' |
721fad23 EA |
935 | }; |
936 | ||
937 | initmacros() | |
938 | { | |
9dbc8d99 EA |
939 | register struct metamac *m; |
940 | char buf[5]; | |
941 | register int c; | |
721fad23 | 942 | |
9dbc8d99 EA |
943 | for (m = MetaMacros; m->metaname != '\0'; m++) |
944 | { | |
945 | buf[0] = m->metaval; | |
946 | buf[1] = '\0'; | |
7338e3d4 | 947 | define(m->metaname, newstr(buf), CurEnv); |
9dbc8d99 EA |
948 | } |
949 | buf[0] = MATCHREPL; | |
950 | buf[2] = '\0'; | |
951 | for (c = '0'; c <= '9'; c++) | |
952 | { | |
953 | buf[1] = c; | |
7338e3d4 | 954 | define(c, newstr(buf), CurEnv); |
9dbc8d99 | 955 | } |
721fad23 | 956 | } |
dd1fe05b | 957 | \f/* |
acae5a9d EA |
958 | ** FREEZE -- freeze BSS & allocated memory |
959 | ** | |
960 | ** This will be used to efficiently load the configuration file. | |
961 | ** | |
962 | ** Parameters: | |
8fe4fb9b | 963 | ** freezefile -- the name of the file to freeze to. |
acae5a9d EA |
964 | ** |
965 | ** Returns: | |
966 | ** none. | |
967 | ** | |
968 | ** Side Effects: | |
8fe4fb9b | 969 | ** Writes BSS and malloc'ed memory to freezefile |
acae5a9d EA |
970 | */ |
971 | ||
7338e3d4 | 972 | union frz |
acae5a9d | 973 | { |
7338e3d4 EA |
974 | char frzpad[BUFSIZ]; /* insure we are on a BUFSIZ boundary */ |
975 | struct | |
976 | { | |
977 | time_t frzstamp; /* timestamp on this freeze */ | |
978 | char *frzbrk; /* the current break */ | |
2e3062fe EA |
979 | char *frzedata; /* address of edata */ |
980 | char *frzend; /* address of end */ | |
7338e3d4 EA |
981 | char frzver[252]; /* sendmail version */ |
982 | } frzinfo; | |
acae5a9d EA |
983 | }; |
984 | ||
8fe4fb9b EA |
985 | freeze(freezefile) |
986 | char *freezefile; | |
acae5a9d EA |
987 | { |
988 | int f; | |
7338e3d4 | 989 | union frz fhdr; |
2e3062fe | 990 | extern char edata, end; |
acae5a9d | 991 | extern char *sbrk(); |
912acb74 | 992 | extern char Version[]; |
acae5a9d | 993 | |
8fe4fb9b | 994 | if (freezefile == NULL) |
acae5a9d EA |
995 | return; |
996 | ||
997 | /* try to open the freeze file */ | |
8fe4fb9b | 998 | f = creat(freezefile, FileMode); |
acae5a9d EA |
999 | if (f < 0) |
1000 | { | |
2e15a2d8 | 1001 | syserr("Cannot freeze %s", freezefile); |
acae5a9d EA |
1002 | errno = 0; |
1003 | return; | |
1004 | } | |
1005 | ||
1006 | /* build the freeze header */ | |
7338e3d4 EA |
1007 | fhdr.frzinfo.frzstamp = curtime(); |
1008 | fhdr.frzinfo.frzbrk = sbrk(0); | |
2e3062fe EA |
1009 | fhdr.frzinfo.frzedata = &edata; |
1010 | fhdr.frzinfo.frzend = &end; | |
0e306e7f | 1011 | (void) strcpy(fhdr.frzinfo.frzver, Version); |
acae5a9d EA |
1012 | |
1013 | /* write out the freeze header */ | |
611b763d | 1014 | if (write(f, (char *) &fhdr, sizeof fhdr) != sizeof fhdr || |
34fe0a9b EA |
1015 | write(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
1016 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
7338e3d4 | 1017 | { |
2e15a2d8 | 1018 | syserr("Cannot freeze %s", freezefile); |
7338e3d4 | 1019 | } |
acae5a9d EA |
1020 | |
1021 | /* fine, clean up */ | |
1022 | (void) close(f); | |
1023 | } | |
1024 | \f/* | |
1025 | ** THAW -- read in the frozen configuration file. | |
1026 | ** | |
1027 | ** Parameters: | |
8fe4fb9b | 1028 | ** freezefile -- the name of the file to thaw from. |
acae5a9d EA |
1029 | ** |
1030 | ** Returns: | |
1031 | ** TRUE if it successfully read the freeze file. | |
1032 | ** FALSE otherwise. | |
1033 | ** | |
1034 | ** Side Effects: | |
8fe4fb9b | 1035 | ** reads freezefile in to BSS area. |
acae5a9d EA |
1036 | */ |
1037 | ||
8fe4fb9b EA |
1038 | thaw(freezefile) |
1039 | char *freezefile; | |
acae5a9d EA |
1040 | { |
1041 | int f; | |
ccfed53c | 1042 | register char *p; |
7338e3d4 | 1043 | union frz fhdr; |
ccfed53c | 1044 | char hbuf[60]; |
a59237a4 | 1045 | extern char edata, end; |
912acb74 | 1046 | extern char Version[]; |
17a67c62 | 1047 | extern caddr_t brk(); |
ccfed53c EA |
1048 | extern char **myhostname(); |
1049 | extern char *macvalue(); | |
acae5a9d | 1050 | |
8fe4fb9b | 1051 | if (freezefile == NULL) |
acae5a9d EA |
1052 | return (FALSE); |
1053 | ||
1054 | /* open the freeze file */ | |
8fe4fb9b | 1055 | f = open(freezefile, 0); |
acae5a9d EA |
1056 | if (f < 0) |
1057 | { | |
1058 | errno = 0; | |
1059 | return (FALSE); | |
1060 | } | |
1061 | ||
1062 | /* read in the header */ | |
07adc4f5 RA |
1063 | if (read(f, (char *) &fhdr, sizeof fhdr) < sizeof fhdr) |
1064 | { | |
db281fbf | 1065 | syslog(LOG_WARNING, "Cannot read frozen config file"); |
07adc4f5 RA |
1066 | (void) close(f); |
1067 | return (FALSE); | |
1068 | } | |
db281fbf | 1069 | if (fhdr.frzinfo.frzedata != &edata || |
2e3062fe | 1070 | fhdr.frzinfo.frzend != &end || |
7338e3d4 | 1071 | strcmp(fhdr.frzinfo.frzver, Version) != 0) |
acae5a9d | 1072 | { |
07adc4f5 | 1073 | syslog(LOG_WARNING, "Wrong version of frozen config file"); |
acae5a9d EA |
1074 | (void) close(f); |
1075 | return (FALSE); | |
1076 | } | |
1077 | ||
1078 | /* arrange to have enough space */ | |
17a67c62 | 1079 | if (brk(fhdr.frzinfo.frzbrk) == (caddr_t) -1) |
acae5a9d | 1080 | { |
7338e3d4 | 1081 | syserr("Cannot break to %x", fhdr.frzinfo.frzbrk); |
acae5a9d EA |
1082 | (void) close(f); |
1083 | return (FALSE); | |
1084 | } | |
1085 | ||
1086 | /* now read in the freeze file */ | |
34fe0a9b EA |
1087 | if (read(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
1088 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
acae5a9d | 1089 | { |
07adc4f5 | 1090 | syserr("Cannot read frozen config file"); |
acae5a9d | 1091 | /* oops! we have trashed memory..... */ |
0e306e7f | 1092 | (void) write(2, "Cannot read freeze file\n", 24); |
7338e3d4 | 1093 | _exit(EX_SOFTWARE); |
acae5a9d EA |
1094 | } |
1095 | ||
1096 | (void) close(f); | |
ccfed53c EA |
1097 | |
1098 | /* verify that the host name was correct on the freeze */ | |
1099 | (void) myhostname(hbuf, sizeof hbuf); | |
1100 | p = macvalue('w', CurEnv); | |
1101 | if (p == NULL) | |
1102 | p = ""; | |
1103 | if (strcmp(hbuf, macvalue('w', CurEnv)) == 0) | |
1104 | return (TRUE); | |
1105 | syslog(LOG_WARNING, "Hostname changed since freeze (%s => %s)", | |
1106 | p, hbuf); | |
1107 | return (FALSE); | |
acae5a9d | 1108 | } |
813d8709 EA |
1109 | \f/* |
1110 | ** DISCONNECT -- remove our connection with any foreground process | |
1111 | ** | |
1112 | ** Parameters: | |
d188728a EA |
1113 | ** fulldrop -- if set, we should also drop the controlling |
1114 | ** TTY if possible -- this should only be done when | |
1115 | ** setting up the daemon since otherwise UUCP can | |
1116 | ** leave us trying to open a dialin, and we will | |
1117 | ** wait for the carrier. | |
813d8709 EA |
1118 | ** |
1119 | ** Returns: | |
1120 | ** none | |
1121 | ** | |
1122 | ** Side Effects: | |
1123 | ** Trys to insure that we are immune to vagaries of | |
1124 | ** the controlling tty. | |
1125 | */ | |
1126 | ||
d188728a EA |
1127 | disconnect(fulldrop) |
1128 | bool fulldrop; | |
813d8709 EA |
1129 | { |
1130 | int fd; | |
1131 | ||
e6f08ab1 | 1132 | if (tTd(52, 1)) |
b9accadd EA |
1133 | printf("disconnect: In %d Out %d\n", fileno(InChannel), |
1134 | fileno(OutChannel)); | |
e6f08ab1 | 1135 | if (tTd(52, 5)) |
813d8709 | 1136 | { |
e6f08ab1 EA |
1137 | printf("don't\n"); |
1138 | return; | |
813d8709 | 1139 | } |
813d8709 EA |
1140 | |
1141 | /* be sure we don't get nasty signals */ | |
0e306e7f EA |
1142 | (void) signal(SIGHUP, SIG_IGN); |
1143 | (void) signal(SIGINT, SIG_IGN); | |
1144 | (void) signal(SIGQUIT, SIG_IGN); | |
813d8709 EA |
1145 | |
1146 | /* we can't communicate with our caller, so.... */ | |
7338e3d4 EA |
1147 | HoldErrs = TRUE; |
1148 | ErrorMode = EM_MAIL; | |
813d8709 EA |
1149 | Verbose = FALSE; |
1150 | ||
1151 | /* all input from /dev/null */ | |
813d8709 | 1152 | if (InChannel != stdin) |
b9accadd EA |
1153 | { |
1154 | (void) fclose(InChannel); | |
1155 | InChannel = stdin; | |
1156 | } | |
1157 | (void) freopen("/dev/null", "r", stdin); | |
813d8709 EA |
1158 | |
1159 | /* output to the transcript */ | |
b9accadd | 1160 | if (OutChannel != stdout) |
813d8709 | 1161 | { |
b9accadd EA |
1162 | (void) fclose(OutChannel); |
1163 | OutChannel = stdout; | |
813d8709 | 1164 | } |
912acb74 EA |
1165 | if (CurEnv->e_xfp == NULL) |
1166 | CurEnv->e_xfp = fopen("/dev/null", "w"); | |
b9accadd EA |
1167 | (void) fflush(stdout); |
1168 | (void) close(1); | |
1169 | (void) close(2); | |
912acb74 | 1170 | while ((fd = dup(fileno(CurEnv->e_xfp))) < 2 && fd > 0) |
b9accadd | 1171 | continue; |
813d8709 | 1172 | |
e6f08ab1 | 1173 | /* drop our controlling TTY completely if possible */ |
d188728a | 1174 | if (fulldrop) |
e6f08ab1 | 1175 | { |
5229f34d | 1176 | (void) setsid(); |
afe907a4 | 1177 | #ifdef TIOCNOTTY |
d188728a EA |
1178 | fd = open("/dev/tty", 2); |
1179 | if (fd >= 0) | |
1180 | { | |
17a67c62 | 1181 | (void) ioctl(fd, (int) TIOCNOTTY, (char *) 0); |
d188728a EA |
1182 | (void) close(fd); |
1183 | } | |
17a67c62 | 1184 | (void) setpgrp(0, 0); |
afe907a4 | 1185 | #endif /* TIOCNOTTY */ |
70faa7c8 | 1186 | errno = 0; |
e6f08ab1 | 1187 | } |
e6f08ab1 | 1188 | |
813d8709 EA |
1189 | # ifdef LOG |
1190 | if (LogLevel > 11) | |
1191 | syslog(LOG_DEBUG, "in background, pid=%d", getpid()); | |
f3d8f6d6 | 1192 | # endif /* LOG */ |
813d8709 EA |
1193 | |
1194 | errno = 0; | |
1195 | } | |
b2d4b27a KB |
1196 | |
1197 | static void | |
1198 | obsolete(argv) | |
1199 | char *argv[]; | |
1200 | { | |
1201 | char *ap; | |
1202 | ||
1203 | while (ap = *++argv) | |
1204 | { | |
1205 | /* Return if "--" or not an option of any form. */ | |
1206 | if (ap[0] != '-' || ap[1] == '-') | |
1207 | return; | |
1208 | ||
1209 | /* If -C doesn't have an argument, use sendmail.cf. */ | |
1210 | #define __DEFPATH "sendmail.cf" | |
f96fa7de EA |
1211 | if (ap[1] == 'C' && ap[2] == '\0' && |
1212 | (argv[1] == NULL || argv[1][0] == '-')) | |
b2d4b27a KB |
1213 | { |
1214 | *argv = xalloc(sizeof(__DEFPATH) + 2); | |
1215 | argv[0][0] = '-'; | |
1216 | argv[0][1] = 'C'; | |
1217 | (void)strcpy(&argv[0][2], __DEFPATH); | |
1218 | } | |
f96fa7de EA |
1219 | |
1220 | /* If -q doesn't have an argument, run it once. */ | |
1221 | if (ap[1] == 'q' && ap[2] == '\0' && | |
1222 | (argv[1] == NULL || argv[1][0] == '-')) | |
1223 | *argv = "-q0"; | |
b2d4b27a KB |
1224 | } |
1225 | } |