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 | |
1c8ae8e7 | 16 | static char sccsid[] = "@(#)main.c 6.3 (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; |
a0431b8d EA |
213 | #define OPTIONS "b:C:cd:eF:f:h:Iimno:p:q:R:r:sTtv" |
214 | while ((j = getopt(argc, argv, OPTIONS)) != EOF) | |
f96fa7de EA |
215 | { |
216 | switch (j) | |
560a80d9 | 217 | { |
b2d4b27a KB |
218 | case 'b': |
219 | if (optarg[0] == 'z' && optarg[1] == '\0') | |
220 | nothaw = TRUE; | |
221 | break; | |
222 | ||
223 | case 'C': | |
224 | ConfFile = optarg; | |
0e306e7f EA |
225 | (void) setgid(getrgid()); |
226 | (void) setuid(getruid()); | |
66391bf0 | 227 | safecf = FALSE; |
43e0af62 | 228 | nothaw = TRUE; |
b2d4b27a KB |
229 | break; |
230 | ||
231 | case 'd': | |
43e0af62 | 232 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); |
b2d4b27a | 233 | tTflag(optarg); |
43e0af62 EA |
234 | setbuf(stdout, (char *) NULL); |
235 | printf("Version %s\n", Version); | |
b2d4b27a | 236 | break; |
43e0af62 | 237 | } |
f96fa7de | 238 | } |
2bc15c4e KB |
239 | |
240 | InChannel = stdin; | |
241 | OutChannel = stdout; | |
242 | ||
43e0af62 | 243 | if (!nothaw) |
22659072 EA |
244 | readconfig = !thaw(FreezeFile); |
245 | ||
b2d4b27a KB |
246 | /* strip out "dangerous" environment variables */ |
247 | (void) unsetenv("FS"); | |
248 | for (i = 1; (p = envp[i++]) != NULL;) | |
d0a69620 | 249 | { |
b2d4b27a KB |
250 | if (strncmp(p, "LD_", 3) == 0) |
251 | { | |
f96fa7de EA |
252 | /* hack: change this name to be non-special */ |
253 | p[0] = '\201'; | |
d0a69620 | 254 | continue; |
b2d4b27a | 255 | } |
d0a69620 | 256 | } |
b2d4b27a | 257 | environ = envp; |
42bbf376 EA |
258 | |
259 | # ifdef SETPROCTITLE | |
260 | /* | |
261 | ** Save start and extent of argv for setproctitle. | |
262 | */ | |
263 | ||
264 | Argv = argv; | |
3251a23d | 265 | if (--i > 0) |
577bce94 EA |
266 | LastArgv = envp[i - 1] + strlen(envp[i - 1]); |
267 | else | |
268 | LastArgv = argv[argc - 1] + strlen(argv[argc - 1]); | |
f3d8f6d6 | 269 | # endif /* SETPROCTITLE */ |
e36705df | 270 | |
b3cbe40f | 271 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) |
6e2f38be | 272 | (void) signal(SIGINT, intsig); |
eb211e2c | 273 | if (signal(SIGHUP, SIG_IGN) != SIG_IGN) |
6e2f38be EA |
274 | (void) signal(SIGHUP, intsig); |
275 | (void) signal(SIGTERM, intsig); | |
ed7382d3 | 276 | (void) signal(SIGPIPE, SIG_IGN); |
a0554f81 | 277 | OldUmask = umask(0); |
75f95954 | 278 | OpMode = MD_DELIVER; |
e673aad7 | 279 | MotherPid = getpid(); |
561c7c50 | 280 | FullName = getenv("NAME"); |
dd1fe05b | 281 | |
b3cbe40f EA |
282 | errno = 0; |
283 | from = NULL; | |
378e8da7 | 284 | |
4388720d | 285 | if (readconfig) |
1dbda134 | 286 | { |
4388720d EA |
287 | /* initialize some macros, etc. */ |
288 | initmacros(); | |
289 | ||
290 | /* hostname */ | |
291 | av = myhostname(jbuf, sizeof jbuf); | |
292 | if (jbuf[0] != '\0') | |
293 | { | |
dec0d30e EA |
294 | extern char *strchr(); |
295 | ||
43e0af62 EA |
296 | if (tTd(0, 4)) |
297 | printf("canonical name: %s\n", jbuf); | |
4388720d EA |
298 | p = newstr(jbuf); |
299 | define('w', p, CurEnv); | |
dec0d30e EA |
300 | |
301 | q = strchr(jbuf, '.'); | |
302 | if (q != NULL) | |
303 | { | |
1bc035b0 | 304 | *q++ = '\0'; |
dec0d30e | 305 | p = newstr(jbuf); |
1bc035b0 | 306 | define('m', q, CurEnv); |
dec0d30e | 307 | } |
4388720d EA |
308 | setclass('w', p); |
309 | } | |
310 | while (av != NULL && *av != NULL) | |
43e0af62 | 311 | { |
43e0af62 EA |
312 | if (tTd(0, 4)) |
313 | printf("\ta.k.a.: %s\n", *av); | |
4388720d | 314 | setclass('w', *av++); |
43e0af62 | 315 | } |
4388720d EA |
316 | |
317 | /* version */ | |
318 | define('v', Version, CurEnv); | |
1dbda134 | 319 | } |
378e8da7 EA |
320 | |
321 | /* current time */ | |
22e6d6b8 | 322 | define('b', arpadate((char *) NULL), CurEnv); |
378e8da7 | 323 | |
a691a4a6 | 324 | /* |
c1e24818 | 325 | ** Crack argv. |
a691a4a6 EA |
326 | */ |
327 | ||
acae5a9d | 328 | av = argv; |
f3d8f6d6 | 329 | p = strrchr(*av, '/'); |
26a3626c EA |
330 | if (p++ == NULL) |
331 | p = *av; | |
332 | if (strcmp(p, "newaliases") == 0) | |
75f95954 | 333 | OpMode = MD_INITALIAS; |
26a3626c | 334 | else if (strcmp(p, "mailq") == 0) |
75f95954 | 335 | OpMode = MD_PRINT; |
34fe0a9b EA |
336 | else if (strcmp(p, "smtpd") == 0) |
337 | OpMode = MD_DAEMON; | |
b2d4b27a KB |
338 | |
339 | optind = 1; | |
a0431b8d | 340 | while ((j = getopt(argc, argv, OPTIONS)) != EOF) |
f96fa7de EA |
341 | { |
342 | switch (j) | |
a691a4a6 | 343 | { |
75f95954 | 344 | case 'b': /* operations mode */ |
f96fa7de | 345 | switch (j = *optarg) |
c1e24818 | 346 | { |
75f95954 | 347 | case MD_DAEMON: |
908dc8db MK |
348 | # ifdef DAEMON |
349 | if (getuid() != 0) { | |
350 | usrerr("Permission denied"); | |
351 | exit (EX_USAGE); | |
352 | } | |
353 | (void) unsetenv("HOSTALIASES"); | |
354 | # else | |
2e15a2d8 MK |
355 | usrerr("Daemon mode not implemented"); |
356 | ExitStat = EX_USAGE; | |
75f95954 | 357 | break; |
f3d8f6d6 | 358 | # endif /* DAEMON */ |
75f95954 EA |
359 | case MD_SMTP: |
360 | # ifndef SMTP | |
2e15a2d8 MK |
361 | usrerr("I don't speak SMTP"); |
362 | ExitStat = EX_USAGE; | |
75f95954 | 363 | break; |
f3d8f6d6 | 364 | # endif /* SMTP */ |
75f95954 EA |
365 | case MD_DELIVER: |
366 | case MD_VERIFY: | |
367 | case MD_TEST: | |
368 | case MD_INITALIAS: | |
369 | case MD_PRINT: | |
370 | case MD_FREEZE: | |
b2d4b27a | 371 | OpMode = j; |
75f95954 EA |
372 | break; |
373 | ||
374 | default: | |
b2d4b27a | 375 | usrerr("Invalid operation mode %c", j); |
2e15a2d8 | 376 | ExitStat = EX_USAGE; |
75f95954 | 377 | break; |
c1e24818 EA |
378 | } |
379 | break; | |
380 | ||
560a80d9 | 381 | case 'C': /* select configuration file (already done) */ |
c1e24818 | 382 | break; |
a691a4a6 | 383 | |
43e0af62 | 384 | case 'd': /* debugging -- redo in case frozen */ |
c1e24818 | 385 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); |
b2d4b27a | 386 | tTflag(optarg); |
c1e24818 | 387 | setbuf(stdout, (char *) NULL); |
c1e24818 | 388 | break; |
b3cbe40f | 389 | |
b3cbe40f | 390 | case 'f': /* from address */ |
c1e24818 | 391 | case 'r': /* obsolete -f flag */ |
22659072 | 392 | if (from != NULL) |
b3cbe40f | 393 | { |
2e15a2d8 MK |
394 | usrerr("More than one \"from\" person"); |
395 | ExitStat = EX_USAGE; | |
b3cbe40f EA |
396 | break; |
397 | } | |
b2d4b27a | 398 | from = newstr(optarg); |
b3cbe40f EA |
399 | break; |
400 | ||
6da7b890 | 401 | case 'F': /* set full name */ |
b2d4b27a | 402 | FullName = newstr(optarg); |
6da7b890 EA |
403 | break; |
404 | ||
b3cbe40f | 405 | case 'h': /* hop count */ |
b2d4b27a KB |
406 | CurEnv->e_hopcount = strtol(optarg, &ep, 10); |
407 | if (*ep) | |
b3cbe40f | 408 | { |
b2d4b27a | 409 | usrerr("Bad hop count (%s)", optarg); |
2e15a2d8 | 410 | ExitStat = EX_USAGE; |
3110074f | 411 | break; |
b3cbe40f | 412 | } |
b3cbe40f | 413 | break; |
b3cbe40f | 414 | |
c1e24818 EA |
415 | case 'n': /* don't alias */ |
416 | NoAlias = TRUE; | |
d59b067a EA |
417 | break; |
418 | ||
c1e24818 | 419 | case 'o': /* set option */ |
b2d4b27a | 420 | setoption(*optarg, optarg + 1, FALSE, TRUE); |
14a39063 | 421 | break; |
cbdb7357 | 422 | |
b1e36c23 | 423 | case 'p': /* set protocol */ |
b2d4b27a | 424 | q = strchr(optarg, ':'); |
af04f6e4 EA |
425 | if (q != NULL) |
426 | *q++ = '\0'; | |
b2d4b27a KB |
427 | if (*optarg != '\0') |
428 | define('r', newstr(optarg), CurEnv); | |
af04f6e4 EA |
429 | if (*q != '\0') |
430 | define('s', newstr(q), CurEnv); | |
b1e36c23 EA |
431 | break; |
432 | ||
ed45aae1 | 433 | case 'q': /* run queue files at intervals */ |
884a20cb | 434 | # ifdef QUEUE |
f2e44ded EA |
435 | if (getuid() != 0) |
436 | { | |
437 | struct stat stbuf; | |
438 | ||
439 | /* check to see if we own the queue directory */ | |
440 | if (stat(QueueDir, &stbuf) < 0) | |
441 | syserr("main: cannot stat %s", QueueDir); | |
442 | if (stbuf.st_uid != getuid()) | |
443 | { | |
444 | /* nope, really a botch */ | |
445 | usrerr("Permission denied"); | |
446 | exit (EX_NOPERM); | |
447 | } | |
908dc8db MK |
448 | } |
449 | (void) unsetenv("HOSTALIASES"); | |
d0a69620 | 450 | FullName = NULL; |
aba51985 | 451 | queuemode = TRUE; |
b2d4b27a | 452 | QueueIntvl = convtime(optarg); |
f3d8f6d6 | 453 | # else /* QUEUE */ |
2e15a2d8 MK |
454 | usrerr("I don't know about queues"); |
455 | ExitStat = EX_USAGE; | |
f3d8f6d6 | 456 | # endif /* QUEUE */ |
ed45aae1 EA |
457 | break; |
458 | ||
c1e24818 EA |
459 | case 't': /* read recipients from message */ |
460 | GrabTo = TRUE; | |
461 | break; | |
462 | ||
463 | /* compatibility flags */ | |
c1e24818 EA |
464 | case 'c': /* connect to non-local mailers */ |
465 | case 'e': /* error message disposition */ | |
466 | case 'i': /* don't let dot stop me */ | |
467 | case 'm': /* send to me too */ | |
468 | case 'T': /* set timeout interval */ | |
469 | case 'v': /* give blow-by-blow description */ | |
a0431b8d | 470 | setoption(j, "T", FALSE, TRUE); |
35cc3fad EA |
471 | break; |
472 | ||
c1e24818 | 473 | case 's': /* save From lines in headers */ |
a0431b8d | 474 | setoption('f', "T", FALSE, TRUE); |
b3cbe40f | 475 | break; |
26a3626c EA |
476 | |
477 | # ifdef DBM | |
478 | case 'I': /* initialize alias DBM file */ | |
75f95954 | 479 | OpMode = MD_INITALIAS; |
26a3626c | 480 | break; |
ce46a48a EA |
481 | # endif /* DBM */ |
482 | ||
483 | case 'R': /* log raw recipient info */ | |
b2d4b27a KB |
484 | RcptLogFile = newstr(optarg); |
485 | break; | |
486 | ||
487 | default: | |
488 | ExitStat = EX_USAGE; | |
489 | finis(); | |
ce46a48a | 490 | break; |
b3cbe40f | 491 | } |
f96fa7de | 492 | } |
b2d4b27a | 493 | av += optind; |
b3cbe40f | 494 | |
836a1487 EA |
495 | #ifdef NAMED_BIND |
496 | if (tTd(8, 1)) | |
497 | _res.options |= RES_DEBUG; | |
498 | #endif | |
499 | ||
9e3c0a28 | 500 | /* |
2cce0c26 EA |
501 | ** Do basic initialization. |
502 | ** Read system control file. | |
179c1218 | 503 | ** Extract special fields for local use. |
9e3c0a28 EA |
504 | */ |
505 | ||
46f6ec52 | 506 | if (OpMode == MD_FREEZE || readconfig) |
a4076aed | 507 | readcf(ConfFile, safecf, CurEnv); |
22659072 | 508 | |
07c63e56 | 509 | #ifdef SYS5TZ |
ca4d0c0b EA |
510 | /* Enforce use of local time (null string overrides this) */ |
511 | if (TimeZoneSpec == NULL) | |
512 | unsetenv("TZ"); | |
513 | else if (TimeZoneSpec[0] != '\0') | |
514 | { | |
515 | p = xalloc(strlen(TimeZoneSpec) + 4); | |
516 | (void) strcpy(p, "TZ="); | |
517 | (void) strcat(p, TimeZoneSpec); | |
518 | putenv(p); | |
519 | } | |
520 | #endif | |
521 | ||
2281a453 EA |
522 | if (ConfigLevel > MAXCONFIGLEVEL) |
523 | { | |
524 | syserr("Warning: .cf version level (%d) exceeds program functionality (%d)", | |
525 | ConfigLevel, MAXCONFIGLEVEL); | |
526 | } | |
75f95954 | 527 | switch (OpMode) |
acae5a9d | 528 | { |
26a3626c | 529 | case MD_FREEZE: |
a9621daf | 530 | /* this is critical to avoid forgeries of the frozen config */ |
0e306e7f EA |
531 | (void) setgid(getgid()); |
532 | (void) setuid(getuid()); | |
a9621daf EA |
533 | |
534 | /* freeze the configuration */ | |
8fe4fb9b | 535 | freeze(FreezeFile); |
acae5a9d | 536 | exit(EX_OK); |
26a3626c EA |
537 | |
538 | case MD_INITALIAS: | |
539 | Verbose = TRUE; | |
540 | break; | |
13dfebea EA |
541 | |
542 | case MD_DAEMON: | |
543 | /* remove things that don't make sense in daemon mode */ | |
544 | FullName = NULL; | |
545 | break; | |
acae5a9d | 546 | } |
179c1218 | 547 | |
6130649c EA |
548 | /* do heuristic mode adjustment */ |
549 | if (Verbose) | |
75f95954 EA |
550 | { |
551 | /* turn off noconnect option */ | |
552 | setoption('c', "F", TRUE, FALSE); | |
553 | ||
554 | /* turn on interactive delivery */ | |
555 | setoption('d', "", TRUE, FALSE); | |
556 | } | |
6130649c | 557 | |
179c1218 | 558 | /* our name for SMTP codes */ |
a73ae8ac | 559 | expand("\001j", jbuf, &jbuf[sizeof jbuf - 1], CurEnv); |
57c97d4a | 560 | MyHostName = jbuf; |
d6a28dd8 | 561 | |
179c1218 EA |
562 | /* the indices of local and program mailers */ |
563 | st = stab("local", ST_MAILER, ST_FIND); | |
564 | if (st == NULL) | |
565 | syserr("No local mailer defined"); | |
566 | else | |
567 | LocalMailer = st->s_mailer; | |
568 | st = stab("prog", ST_MAILER, ST_FIND); | |
569 | if (st == NULL) | |
570 | syserr("No prog mailer defined"); | |
571 | else | |
572 | ProgMailer = st->s_mailer; | |
573 | ||
6bbaf971 EA |
574 | /* operate in queue directory */ |
575 | if (chdir(QueueDir) < 0) | |
576 | { | |
577 | syserr("cannot chdir(%s)", QueueDir); | |
578 | exit(EX_SOFTWARE); | |
579 | } | |
580 | ||
64912e7e | 581 | /* |
55f0da62 | 582 | ** Do operation-mode-dependent initialization. |
64912e7e EA |
583 | */ |
584 | ||
55f0da62 | 585 | switch (OpMode) |
64912e7e | 586 | { |
55f0da62 EA |
587 | case MD_PRINT: |
588 | /* print the queue */ | |
74f37936 | 589 | #ifdef QUEUE |
64912e7e EA |
590 | dropenvelope(CurEnv); |
591 | printqueue(); | |
592 | exit(EX_OK); | |
f3d8f6d6 | 593 | #else /* QUEUE */ |
74f37936 EA |
594 | usrerr("No queue to print"); |
595 | finis(); | |
f3d8f6d6 | 596 | #endif /* QUEUE */ |
8acb5142 | 597 | |
55f0da62 EA |
598 | case MD_INITALIAS: |
599 | /* initialize alias database */ | |
a4076aed | 600 | initaliases(AliasFile, TRUE, CurEnv); |
f4dbf345 | 601 | exit(EX_OK); |
cdb17311 | 602 | |
55f0da62 EA |
603 | case MD_DAEMON: |
604 | /* don't open alias database -- done in srvrsmtp */ | |
605 | break; | |
606 | ||
607 | default: | |
608 | /* open the alias database */ | |
a4076aed | 609 | initaliases(AliasFile, FALSE, CurEnv); |
55f0da62 EA |
610 | break; |
611 | } | |
612 | ||
9678c96d | 613 | if (tTd(0, 15)) |
9c6d4c70 | 614 | { |
f6a0cc15 | 615 | /* print configuration table (or at least part of it) */ |
9c6d4c70 EA |
616 | printrules(); |
617 | for (i = 0; i < MAXMAILERS; i++) | |
618 | { | |
619 | register struct mailer *m = Mailer[i]; | |
1dbda134 | 620 | int j; |
9c6d4c70 EA |
621 | |
622 | if (m == NULL) | |
623 | continue; | |
97ad25b6 EA |
624 | printf("mailer %d (%s): P=%s S=%d R=%d M=%ld F=", i, m->m_name, |
625 | m->m_mailer, m->m_s_rwset, m->m_r_rwset, | |
626 | m->m_maxsize); | |
1dbda134 EA |
627 | for (j = '\0'; j <= '\177'; j++) |
628 | if (bitnset(j, m->m_flags)) | |
0e306e7f | 629 | (void) putchar(j); |
1dbda134 | 630 | printf(" E="); |
b3ef02a2 | 631 | xputs(m->m_eol); |
72f91c2e EA |
632 | if (m->m_argv != NULL) |
633 | { | |
634 | char **a = m->m_argv; | |
635 | ||
636 | printf(" A="); | |
637 | while (*a != NULL) | |
638 | { | |
639 | if (a != m->m_argv) | |
640 | printf(" "); | |
641 | xputs(*a++); | |
642 | } | |
643 | } | |
b3ef02a2 | 644 | printf("\n"); |
9c6d4c70 EA |
645 | } |
646 | } | |
9c6d4c70 | 647 | |
be2fcca9 EA |
648 | /* |
649 | ** Switch to the main envelope. | |
650 | */ | |
651 | ||
652 | CurEnv = newenvelope(&MainEnvelope); | |
e6f08ab1 | 653 | MainEnvelope.e_flags = BlankEnvelope.e_flags; |
be2fcca9 | 654 | |
cf69a203 EA |
655 | /* |
656 | ** If test mode, read addresses from stdin and process. | |
657 | */ | |
658 | ||
75f95954 | 659 | if (OpMode == MD_TEST) |
cf69a203 | 660 | { |
dab2b390 | 661 | bool terminal = isatty(fileno(stdin)); |
cf69a203 EA |
662 | char buf[MAXLINE]; |
663 | ||
dab2b390 EA |
664 | if (terminal) |
665 | { | |
666 | printf("ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n"); | |
667 | printf("Enter <ruleset> <address>\n"); | |
668 | } | |
cf69a203 EA |
669 | for (;;) |
670 | { | |
671 | register char **pvp; | |
50435450 | 672 | char *q; |
50435450 | 673 | extern char *DelimChar; |
2ee7e9e0 | 674 | extern bool invalidaddr(); |
cf69a203 | 675 | |
dab2b390 EA |
676 | if (terminal) |
677 | printf("> "); | |
0e306e7f | 678 | (void) fflush(stdout); |
cf69a203 EA |
679 | if (fgets(buf, sizeof buf, stdin) == NULL) |
680 | finis(); | |
dab2b390 EA |
681 | if (!terminal) |
682 | printf("> %s", buf); | |
683 | if (buf[0] == '#') | |
684 | continue; | |
f90b4150 | 685 | for (p = buf; isspace(*p); p++) |
cf69a203 | 686 | continue; |
ecfd2c8e EA |
687 | q = p; |
688 | while (*p != '\0' && !isspace(*p)) | |
689 | p++; | |
cf69a203 | 690 | if (*p == '\0') |
2ee7e9e0 EA |
691 | { |
692 | printf("No address!\n"); | |
cf69a203 | 693 | continue; |
2ee7e9e0 | 694 | } |
50435450 | 695 | *p = '\0'; |
2ee7e9e0 | 696 | if (invalidaddr(p + 1)) |
2ee7e9e0 | 697 | continue; |
50435450 | 698 | do |
ecfd2c8e | 699 | { |
217a0102 EA |
700 | extern char **prescan(); |
701 | char pvpbuf[PSBUFSIZE]; | |
702 | ||
703 | pvp = prescan(++p, ',', pvpbuf); | |
50435450 | 704 | if (pvp == NULL) |
ecfd2c8e | 705 | continue; |
50435450 EA |
706 | p = q; |
707 | while (*p != '\0') | |
708 | { | |
709 | rewrite(pvp, atoi(p)); | |
710 | while (*p != '\0' && *p++ != ',') | |
711 | continue; | |
712 | } | |
713 | } while (*(p = DelimChar) != '\0'); | |
cf69a203 EA |
714 | } |
715 | } | |
716 | ||
e3cd595c EA |
717 | # ifdef QUEUE |
718 | /* | |
719 | ** If collecting stuff from the queue, go start doing that. | |
720 | */ | |
721 | ||
7b21425b | 722 | if (queuemode && OpMode != MD_DAEMON && QueueIntvl == 0) |
e3cd595c | 723 | { |
ca4d0c0b | 724 | runqueue(FALSE); |
e3cd595c EA |
725 | finis(); |
726 | } | |
f3d8f6d6 | 727 | # endif /* QUEUE */ |
e3cd595c | 728 | |
f6a0cc15 EA |
729 | /* |
730 | ** If a daemon, wait for a request. | |
731 | ** getrequests will always return in a child. | |
25b9d645 | 732 | ** If we should also be processing the queue, start |
19147b2d EA |
733 | ** doing it in background. |
734 | ** We check for any errors that might have happened | |
735 | ** during startup. | |
f6a0cc15 EA |
736 | */ |
737 | ||
75f95954 | 738 | if (OpMode == MD_DAEMON || QueueIntvl != 0) |
25b9d645 | 739 | { |
9678c96d | 740 | if (!tTd(0, 1)) |
58b27aa4 | 741 | { |
fcdf8200 | 742 | /* put us in background */ |
58b27aa4 EA |
743 | i = fork(); |
744 | if (i < 0) | |
745 | syserr("daemon: cannot fork"); | |
746 | if (i != 0) | |
747 | exit(0); | |
fcdf8200 EA |
748 | |
749 | /* get our pid right */ | |
d9162460 | 750 | MotherPid = getpid(); |
fcdf8200 EA |
751 | |
752 | /* disconnect from our controlling tty */ | |
d188728a | 753 | disconnect(TRUE); |
58b27aa4 | 754 | } |
7338e3d4 | 755 | |
25b9d645 EA |
756 | # ifdef QUEUE |
757 | if (queuemode) | |
f309127e | 758 | { |
ca4d0c0b | 759 | runqueue(TRUE); |
75f95954 | 760 | if (OpMode != MD_DAEMON) |
f309127e EA |
761 | for (;;) |
762 | pause(); | |
763 | } | |
f3d8f6d6 | 764 | # endif /* QUEUE */ |
7338e3d4 EA |
765 | dropenvelope(CurEnv); |
766 | ||
767 | #ifdef DAEMON | |
f6a0cc15 | 768 | getrequests(); |
2a16bae3 EA |
769 | |
770 | /* at this point we are in a child: reset state */ | |
75f95954 | 771 | OpMode = MD_SMTP; |
7338e3d4 | 772 | (void) newenvelope(CurEnv); |
912acb74 | 773 | openxscript(CurEnv); |
f3d8f6d6 | 774 | #endif /* DAEMON */ |
7338e3d4 | 775 | } |
88039044 EA |
776 | |
777 | # ifdef SMTP | |
778 | /* | |
779 | ** If running SMTP protocol, start collecting and executing | |
780 | ** commands. This will never return. | |
781 | */ | |
782 | ||
75f95954 | 783 | if (OpMode == MD_SMTP) |
a4076aed | 784 | smtp(CurEnv); |
f3d8f6d6 | 785 | # endif /* SMTP */ |
88039044 | 786 | |
f6a0cc15 | 787 | /* |
e6f08ab1 | 788 | ** Do basic system initialization and set the sender |
f6a0cc15 EA |
789 | */ |
790 | ||
a4076aed | 791 | initsys(CurEnv); |
b5958391 | 792 | setsender(from, CurEnv); |
a9e0e597 | 793 | |
0e1aa71e | 794 | if (*av == NULL && !GrabTo) |
e863b1fa | 795 | { |
2e3062fe EA |
796 | usrerr("Recipient names must be specified"); |
797 | ||
798 | /* collect body for UUCP return */ | |
799 | if (OpMode != MD_VERIFY) | |
a4076aed | 800 | collect(FALSE, CurEnv); |
e863b1fa EA |
801 | finis(); |
802 | } | |
75f95954 EA |
803 | if (OpMode == MD_VERIFY) |
804 | SendMode = SM_VERIFY; | |
b3cbe40f | 805 | |
b3cbe40f | 806 | /* |
d6b27179 | 807 | ** Scan argv and deliver the message to everyone. |
b3cbe40f EA |
808 | */ |
809 | ||
a4076aed | 810 | sendtoargv(av, CurEnv); |
b3cbe40f | 811 | |
72e9b3cc | 812 | /* if we have had errors sofar, arrange a meaningful exit stat */ |
d916f0ca | 813 | if (Errors > 0 && ExitStat == EX_OK) |
a4b004a6 | 814 | ExitStat = EX_USAGE; |
a4b004a6 | 815 | |
dc39c568 EA |
816 | /* |
817 | ** Read the input mail. | |
818 | */ | |
819 | ||
2654b031 | 820 | CurEnv->e_to = NULL; |
75f95954 | 821 | if (OpMode != MD_VERIFY || GrabTo) |
a4076aed | 822 | collect(FALSE, CurEnv); |
d829793b | 823 | errno = 0; |
35cc3fad | 824 | |
4e1f4d4b | 825 | /* collect statistics */ |
7338e3d4 EA |
826 | if (OpMode != MD_VERIFY) |
827 | markstats(CurEnv, (ADDRESS *) NULL); | |
b3cbe40f | 828 | |
9678c96d | 829 | if (tTd(1, 1)) |
2654b031 | 830 | printf("From person = \"%s\"\n", CurEnv->e_from.q_paddr); |
d6b27179 | 831 | |
b3cbe40f EA |
832 | /* |
833 | ** Actually send everything. | |
d6b27179 | 834 | ** If verifying, just ack. |
b3cbe40f EA |
835 | */ |
836 | ||
7338e3d4 EA |
837 | CurEnv->e_from.q_flags |= QDONTSEND; |
838 | CurEnv->e_to = NULL; | |
f7e74083 | 839 | sendall(CurEnv, SM_DEFAULT); |
b3cbe40f EA |
840 | |
841 | /* | |
842 | ** All done. | |
843 | */ | |
844 | ||
845 | finis(); | |
846 | } | |
847 | \f/* | |
848 | ** FINIS -- Clean up and exit. | |
849 | ** | |
b3cbe40f EA |
850 | ** Parameters: |
851 | ** none | |
852 | ** | |
853 | ** Returns: | |
854 | ** never | |
855 | ** | |
856 | ** Side Effects: | |
96faada8 | 857 | ** exits sendmail |
b3cbe40f EA |
858 | */ |
859 | ||
860 | finis() | |
861 | { | |
9678c96d | 862 | if (tTd(2, 1)) |
e6f08ab1 | 863 | printf("\n====finis: stat %d e_flags %o\n", ExitStat, CurEnv->e_flags); |
aba51985 | 864 | |
7338e3d4 | 865 | /* clean up temp files */ |
912acb74 | 866 | CurEnv->e_to = NULL; |
e6f08ab1 | 867 | dropenvelope(CurEnv); |
b3cbe40f | 868 | |
f2e44ded EA |
869 | /* flush any cached connections */ |
870 | mci_flush(); | |
871 | ||
7338e3d4 EA |
872 | /* post statistics */ |
873 | poststats(StatFile); | |
68f0b54c | 874 | |
7338e3d4 | 875 | /* and exit */ |
36a4e219 EA |
876 | # ifdef LOG |
877 | if (LogLevel > 11) | |
878 | syslog(LOG_DEBUG, "finis, pid=%d", getpid()); | |
f3d8f6d6 | 879 | # endif /* LOG */ |
c8ec8736 EA |
880 | if (ExitStat == EX_TEMPFAIL) |
881 | ExitStat = EX_OK; | |
b3cbe40f EA |
882 | exit(ExitStat); |
883 | } | |
884 | \f/* | |
6e2f38be EA |
885 | ** INTSIG -- clean up on interrupt |
886 | ** | |
7338e3d4 EA |
887 | ** This just arranges to exit. It pessimises in that it |
888 | ** may resend a message. | |
6e2f38be EA |
889 | ** |
890 | ** Parameters: | |
891 | ** none. | |
892 | ** | |
893 | ** Returns: | |
894 | ** none. | |
895 | ** | |
896 | ** Side Effects: | |
7338e3d4 | 897 | ** Unlocks the current job. |
6e2f38be EA |
898 | */ |
899 | ||
0df908a9 | 900 | void |
6e2f38be EA |
901 | intsig() |
902 | { | |
7338e3d4 EA |
903 | FileName = NULL; |
904 | unlockqueue(CurEnv); | |
905 | exit(EX_OK); | |
6e2f38be EA |
906 | } |
907 | \f/* | |
721fad23 EA |
908 | ** INITMACROS -- initialize the macro system |
909 | ** | |
910 | ** This just involves defining some macros that are actually | |
911 | ** used internally as metasymbols to be themselves. | |
912 | ** | |
913 | ** Parameters: | |
914 | ** none. | |
915 | ** | |
916 | ** Returns: | |
917 | ** none. | |
918 | ** | |
919 | ** Side Effects: | |
920 | ** initializes several macros to be themselves. | |
921 | */ | |
922 | ||
9dbc8d99 EA |
923 | struct metamac MetaMacros[] = |
924 | { | |
eca244ca | 925 | /* LHS pattern matching characters */ |
42fa5d67 EA |
926 | '*', MATCHZANY, '+', MATCHANY, '-', MATCHONE, |
927 | '=', MATCHCLASS, '~', MATCHNCLASS, | |
721fad23 EA |
928 | |
929 | /* these are RHS metasymbols */ | |
42fa5d67 EA |
930 | '#', CANONNET, '@', CANONHOST, ':', CANONUSER, |
931 | '>', CALLSUBR, | |
41173b8f | 932 | '{', MATCHLOOKUP, '}', MATCHELOOKUP, |
721fad23 | 933 | |
eca244ca | 934 | /* the conditional operations */ |
42fa5d67 | 935 | '?', CONDIF, '|', CONDELSE, '.', CONDFI, |
9dbc8d99 | 936 | |
eca244ca | 937 | /* and finally the hostname lookup characters */ |
42fa5d67 EA |
938 | '[', HOSTBEGIN, ']', HOSTEND, |
939 | '(', LOOKUPBEGIN, ')', LOOKUPEND, | |
eca244ca | 940 | |
9dbc8d99 | 941 | '\0' |
721fad23 EA |
942 | }; |
943 | ||
944 | initmacros() | |
945 | { | |
9dbc8d99 EA |
946 | register struct metamac *m; |
947 | char buf[5]; | |
948 | register int c; | |
721fad23 | 949 | |
9dbc8d99 EA |
950 | for (m = MetaMacros; m->metaname != '\0'; m++) |
951 | { | |
952 | buf[0] = m->metaval; | |
953 | buf[1] = '\0'; | |
7338e3d4 | 954 | define(m->metaname, newstr(buf), CurEnv); |
9dbc8d99 EA |
955 | } |
956 | buf[0] = MATCHREPL; | |
957 | buf[2] = '\0'; | |
958 | for (c = '0'; c <= '9'; c++) | |
959 | { | |
960 | buf[1] = c; | |
7338e3d4 | 961 | define(c, newstr(buf), CurEnv); |
9dbc8d99 | 962 | } |
721fad23 | 963 | } |
dd1fe05b | 964 | \f/* |
acae5a9d EA |
965 | ** FREEZE -- freeze BSS & allocated memory |
966 | ** | |
967 | ** This will be used to efficiently load the configuration file. | |
968 | ** | |
969 | ** Parameters: | |
8fe4fb9b | 970 | ** freezefile -- the name of the file to freeze to. |
acae5a9d EA |
971 | ** |
972 | ** Returns: | |
973 | ** none. | |
974 | ** | |
975 | ** Side Effects: | |
8fe4fb9b | 976 | ** Writes BSS and malloc'ed memory to freezefile |
acae5a9d EA |
977 | */ |
978 | ||
7338e3d4 | 979 | union frz |
acae5a9d | 980 | { |
7338e3d4 EA |
981 | char frzpad[BUFSIZ]; /* insure we are on a BUFSIZ boundary */ |
982 | struct | |
983 | { | |
984 | time_t frzstamp; /* timestamp on this freeze */ | |
985 | char *frzbrk; /* the current break */ | |
2e3062fe EA |
986 | char *frzedata; /* address of edata */ |
987 | char *frzend; /* address of end */ | |
7338e3d4 EA |
988 | char frzver[252]; /* sendmail version */ |
989 | } frzinfo; | |
acae5a9d EA |
990 | }; |
991 | ||
8fe4fb9b EA |
992 | freeze(freezefile) |
993 | char *freezefile; | |
acae5a9d EA |
994 | { |
995 | int f; | |
7338e3d4 | 996 | union frz fhdr; |
2e3062fe | 997 | extern char edata, end; |
acae5a9d | 998 | extern char *sbrk(); |
912acb74 | 999 | extern char Version[]; |
acae5a9d | 1000 | |
8fe4fb9b | 1001 | if (freezefile == NULL) |
acae5a9d EA |
1002 | return; |
1003 | ||
1004 | /* try to open the freeze file */ | |
8fe4fb9b | 1005 | f = creat(freezefile, FileMode); |
acae5a9d EA |
1006 | if (f < 0) |
1007 | { | |
2e15a2d8 | 1008 | syserr("Cannot freeze %s", freezefile); |
acae5a9d EA |
1009 | errno = 0; |
1010 | return; | |
1011 | } | |
1012 | ||
1013 | /* build the freeze header */ | |
7338e3d4 EA |
1014 | fhdr.frzinfo.frzstamp = curtime(); |
1015 | fhdr.frzinfo.frzbrk = sbrk(0); | |
2e3062fe EA |
1016 | fhdr.frzinfo.frzedata = &edata; |
1017 | fhdr.frzinfo.frzend = &end; | |
0e306e7f | 1018 | (void) strcpy(fhdr.frzinfo.frzver, Version); |
acae5a9d EA |
1019 | |
1020 | /* write out the freeze header */ | |
611b763d | 1021 | if (write(f, (char *) &fhdr, sizeof fhdr) != sizeof fhdr || |
34fe0a9b EA |
1022 | write(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
1023 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
7338e3d4 | 1024 | { |
2e15a2d8 | 1025 | syserr("Cannot freeze %s", freezefile); |
7338e3d4 | 1026 | } |
acae5a9d EA |
1027 | |
1028 | /* fine, clean up */ | |
1029 | (void) close(f); | |
1030 | } | |
1031 | \f/* | |
1032 | ** THAW -- read in the frozen configuration file. | |
1033 | ** | |
1034 | ** Parameters: | |
8fe4fb9b | 1035 | ** freezefile -- the name of the file to thaw from. |
acae5a9d EA |
1036 | ** |
1037 | ** Returns: | |
1038 | ** TRUE if it successfully read the freeze file. | |
1039 | ** FALSE otherwise. | |
1040 | ** | |
1041 | ** Side Effects: | |
8fe4fb9b | 1042 | ** reads freezefile in to BSS area. |
acae5a9d EA |
1043 | */ |
1044 | ||
8fe4fb9b EA |
1045 | thaw(freezefile) |
1046 | char *freezefile; | |
acae5a9d EA |
1047 | { |
1048 | int f; | |
ccfed53c | 1049 | register char *p; |
7338e3d4 | 1050 | union frz fhdr; |
ccfed53c | 1051 | char hbuf[60]; |
a59237a4 | 1052 | extern char edata, end; |
912acb74 | 1053 | extern char Version[]; |
17a67c62 | 1054 | extern caddr_t brk(); |
ccfed53c EA |
1055 | extern char **myhostname(); |
1056 | extern char *macvalue(); | |
acae5a9d | 1057 | |
8fe4fb9b | 1058 | if (freezefile == NULL) |
acae5a9d EA |
1059 | return (FALSE); |
1060 | ||
1061 | /* open the freeze file */ | |
8fe4fb9b | 1062 | f = open(freezefile, 0); |
acae5a9d EA |
1063 | if (f < 0) |
1064 | { | |
1065 | errno = 0; | |
1066 | return (FALSE); | |
1067 | } | |
1068 | ||
1069 | /* read in the header */ | |
07adc4f5 RA |
1070 | if (read(f, (char *) &fhdr, sizeof fhdr) < sizeof fhdr) |
1071 | { | |
db281fbf | 1072 | syslog(LOG_WARNING, "Cannot read frozen config file"); |
07adc4f5 RA |
1073 | (void) close(f); |
1074 | return (FALSE); | |
1075 | } | |
db281fbf | 1076 | if (fhdr.frzinfo.frzedata != &edata || |
2e3062fe | 1077 | fhdr.frzinfo.frzend != &end || |
7338e3d4 | 1078 | strcmp(fhdr.frzinfo.frzver, Version) != 0) |
acae5a9d | 1079 | { |
07adc4f5 | 1080 | syslog(LOG_WARNING, "Wrong version of frozen config file"); |
acae5a9d EA |
1081 | (void) close(f); |
1082 | return (FALSE); | |
1083 | } | |
1084 | ||
1085 | /* arrange to have enough space */ | |
17a67c62 | 1086 | if (brk(fhdr.frzinfo.frzbrk) == (caddr_t) -1) |
acae5a9d | 1087 | { |
7338e3d4 | 1088 | syserr("Cannot break to %x", fhdr.frzinfo.frzbrk); |
acae5a9d EA |
1089 | (void) close(f); |
1090 | return (FALSE); | |
1091 | } | |
1092 | ||
1093 | /* now read in the freeze file */ | |
34fe0a9b EA |
1094 | if (read(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
1095 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
acae5a9d | 1096 | { |
07adc4f5 | 1097 | syserr("Cannot read frozen config file"); |
acae5a9d | 1098 | /* oops! we have trashed memory..... */ |
0e306e7f | 1099 | (void) write(2, "Cannot read freeze file\n", 24); |
7338e3d4 | 1100 | _exit(EX_SOFTWARE); |
acae5a9d EA |
1101 | } |
1102 | ||
1103 | (void) close(f); | |
ccfed53c EA |
1104 | |
1105 | /* verify that the host name was correct on the freeze */ | |
1106 | (void) myhostname(hbuf, sizeof hbuf); | |
1107 | p = macvalue('w', CurEnv); | |
1108 | if (p == NULL) | |
1109 | p = ""; | |
1110 | if (strcmp(hbuf, macvalue('w', CurEnv)) == 0) | |
1111 | return (TRUE); | |
1112 | syslog(LOG_WARNING, "Hostname changed since freeze (%s => %s)", | |
1113 | p, hbuf); | |
1114 | return (FALSE); | |
acae5a9d | 1115 | } |
813d8709 EA |
1116 | \f/* |
1117 | ** DISCONNECT -- remove our connection with any foreground process | |
1118 | ** | |
1119 | ** Parameters: | |
d188728a EA |
1120 | ** fulldrop -- if set, we should also drop the controlling |
1121 | ** TTY if possible -- this should only be done when | |
1122 | ** setting up the daemon since otherwise UUCP can | |
1123 | ** leave us trying to open a dialin, and we will | |
1124 | ** wait for the carrier. | |
813d8709 EA |
1125 | ** |
1126 | ** Returns: | |
1127 | ** none | |
1128 | ** | |
1129 | ** Side Effects: | |
1130 | ** Trys to insure that we are immune to vagaries of | |
1131 | ** the controlling tty. | |
1132 | */ | |
1133 | ||
d188728a EA |
1134 | disconnect(fulldrop) |
1135 | bool fulldrop; | |
813d8709 EA |
1136 | { |
1137 | int fd; | |
1138 | ||
e6f08ab1 | 1139 | if (tTd(52, 1)) |
b9accadd EA |
1140 | printf("disconnect: In %d Out %d\n", fileno(InChannel), |
1141 | fileno(OutChannel)); | |
e6f08ab1 | 1142 | if (tTd(52, 5)) |
813d8709 | 1143 | { |
e6f08ab1 EA |
1144 | printf("don't\n"); |
1145 | return; | |
813d8709 | 1146 | } |
813d8709 EA |
1147 | |
1148 | /* be sure we don't get nasty signals */ | |
0e306e7f EA |
1149 | (void) signal(SIGHUP, SIG_IGN); |
1150 | (void) signal(SIGINT, SIG_IGN); | |
1151 | (void) signal(SIGQUIT, SIG_IGN); | |
813d8709 EA |
1152 | |
1153 | /* we can't communicate with our caller, so.... */ | |
7338e3d4 EA |
1154 | HoldErrs = TRUE; |
1155 | ErrorMode = EM_MAIL; | |
813d8709 EA |
1156 | Verbose = FALSE; |
1157 | ||
1158 | /* all input from /dev/null */ | |
813d8709 | 1159 | if (InChannel != stdin) |
b9accadd EA |
1160 | { |
1161 | (void) fclose(InChannel); | |
1162 | InChannel = stdin; | |
1163 | } | |
1164 | (void) freopen("/dev/null", "r", stdin); | |
813d8709 EA |
1165 | |
1166 | /* output to the transcript */ | |
b9accadd | 1167 | if (OutChannel != stdout) |
813d8709 | 1168 | { |
b9accadd EA |
1169 | (void) fclose(OutChannel); |
1170 | OutChannel = stdout; | |
813d8709 | 1171 | } |
912acb74 EA |
1172 | if (CurEnv->e_xfp == NULL) |
1173 | CurEnv->e_xfp = fopen("/dev/null", "w"); | |
b9accadd EA |
1174 | (void) fflush(stdout); |
1175 | (void) close(1); | |
1176 | (void) close(2); | |
912acb74 | 1177 | while ((fd = dup(fileno(CurEnv->e_xfp))) < 2 && fd > 0) |
b9accadd | 1178 | continue; |
813d8709 | 1179 | |
e6f08ab1 | 1180 | /* drop our controlling TTY completely if possible */ |
d188728a | 1181 | if (fulldrop) |
e6f08ab1 | 1182 | { |
5229f34d | 1183 | (void) setsid(); |
afe907a4 | 1184 | #ifdef TIOCNOTTY |
d188728a EA |
1185 | fd = open("/dev/tty", 2); |
1186 | if (fd >= 0) | |
1187 | { | |
17a67c62 | 1188 | (void) ioctl(fd, (int) TIOCNOTTY, (char *) 0); |
d188728a EA |
1189 | (void) close(fd); |
1190 | } | |
17a67c62 | 1191 | (void) setpgrp(0, 0); |
afe907a4 | 1192 | #endif /* TIOCNOTTY */ |
70faa7c8 | 1193 | errno = 0; |
e6f08ab1 | 1194 | } |
e6f08ab1 | 1195 | |
813d8709 EA |
1196 | # ifdef LOG |
1197 | if (LogLevel > 11) | |
1198 | syslog(LOG_DEBUG, "in background, pid=%d", getpid()); | |
f3d8f6d6 | 1199 | # endif /* LOG */ |
813d8709 EA |
1200 | |
1201 | errno = 0; | |
1202 | } | |
b2d4b27a KB |
1203 | |
1204 | static void | |
1205 | obsolete(argv) | |
1206 | char *argv[]; | |
1207 | { | |
1208 | char *ap; | |
1209 | ||
1210 | while (ap = *++argv) | |
1211 | { | |
1212 | /* Return if "--" or not an option of any form. */ | |
1213 | if (ap[0] != '-' || ap[1] == '-') | |
1214 | return; | |
1215 | ||
1216 | /* If -C doesn't have an argument, use sendmail.cf. */ | |
1217 | #define __DEFPATH "sendmail.cf" | |
f96fa7de EA |
1218 | if (ap[1] == 'C' && ap[2] == '\0' && |
1219 | (argv[1] == NULL || argv[1][0] == '-')) | |
b2d4b27a KB |
1220 | { |
1221 | *argv = xalloc(sizeof(__DEFPATH) + 2); | |
1222 | argv[0][0] = '-'; | |
1223 | argv[0][1] = 'C'; | |
1224 | (void)strcpy(&argv[0][2], __DEFPATH); | |
1225 | } | |
f96fa7de EA |
1226 | |
1227 | /* If -q doesn't have an argument, run it once. */ | |
1228 | if (ap[1] == 'q' && ap[2] == '\0' && | |
1229 | (argv[1] == NULL || argv[1][0] == '-')) | |
1230 | *argv = "-q0"; | |
a0431b8d EA |
1231 | |
1232 | /* if -d doesn't have an argument, use 0-99.1 */ | |
1233 | if (ap[1] == 'd' && ap[2] == '\0' && | |
1234 | (argv[1] == NULL || argv[1][0] == '-')) | |
1235 | *argv = "-d0-99.1"; | |
b2d4b27a KB |
1236 | } |
1237 | } |