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 | * | |
6 | * Redistribution and use in source and binary forms are permitted | |
dc45ba8c KB |
7 | * provided that the above copyright notice and this paragraph are |
8 | * duplicated in all such forms and that any documentation, | |
9 | * advertising materials, and other materials related to such | |
10 | * distribution and use acknowledge that the software was developed | |
11 | * by the University of California, Berkeley. The name of the | |
12 | * University may not be used to endorse or promote products derived | |
13 | * from this software without specific prior written permission. | |
14 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
15 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
16 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
bee79b64 | 17 | */ |
aeb2545d DF |
18 | |
19 | #ifndef lint | |
20 | char copyright[] = | |
bee79b64 | 21 | "@(#) Copyright (c) 1988 Regents of the University of California.\n\ |
aeb2545d | 22 | All rights reserved.\n"; |
bee79b64 | 23 | #endif /* not lint */ |
aeb2545d DF |
24 | |
25 | #ifndef lint | |
a29056d8 | 26 | static char sccsid[] = "@(#)main.c 5.21 (Berkeley) %G%"; |
bee79b64 | 27 | #endif /* not lint */ |
aeb2545d | 28 | |
137c2d1f KB |
29 | #define _DEFINE |
30 | ||
5bec1980 | 31 | #include <sys/file.h> |
137c2d1f KB |
32 | #include <signal.h> |
33 | #include <sgtty.h> | |
34 | #include "sendmail.h" | |
35 | #include <arpa/nameser.h> | |
36 | #include <resolv.h> | |
b3cbe40f | 37 | |
17a67c62 | 38 | # ifdef lint |
2e3062fe | 39 | char edata, end; |
17a67c62 EA |
40 | # endif lint |
41 | ||
b3cbe40f | 42 | /* |
96faada8 | 43 | ** SENDMAIL -- Post mail to a set of destinations. |
b3cbe40f EA |
44 | ** |
45 | ** This is the basic mail router. All user mail programs should | |
96faada8 | 46 | ** call this routine to actually deliver mail. Sendmail in |
b3cbe40f EA |
47 | ** turn calls a bunch of mail servers that do the real work of |
48 | ** delivering the mail. | |
49 | ** | |
3199e4f3 EA |
50 | ** Sendmail is driven by tables read in from /usr/lib/sendmail.cf |
51 | ** (read by readcf.c). Some more static configuration info, | |
52 | ** including some code that you may want to tailor for your | |
53 | ** installation, is in conf.c. You may also want to touch | |
54 | ** daemon.c (if you have some other IPC mechanism), acct.c | |
55 | ** (to change your accounting), names.c (to adjust the name | |
56 | ** server mechanism). | |
b3cbe40f EA |
57 | ** |
58 | ** Usage: | |
7338e3d4 | 59 | ** /usr/lib/sendmail [flags] addr ... |
b3cbe40f | 60 | ** |
7338e3d4 | 61 | ** See the associated documentation for details. |
b3cbe40f | 62 | ** |
b3cbe40f | 63 | ** Author: |
7338e3d4 EA |
64 | ** Eric Allman, UCB/INGRES (until 10/81) |
65 | ** Britton-Lee, Inc., purveyors of fine | |
66 | ** database computers (from 11/81) | |
67 | ** The support of the INGRES Project and Britton-Lee is | |
68 | ** gratefully acknowledged. Britton-Lee in | |
69 | ** particular had absolutely nothing to gain from | |
70 | ** my involvement in this project. | |
b3cbe40f EA |
71 | */ |
72 | ||
73 | ||
83f674d8 | 74 | int NextMailer; /* "free" index into Mailer struct */ |
912acb74 | 75 | char *FullName; /* sender's full name */ |
be2fcca9 | 76 | ENVELOPE BlankEnvelope; /* a "blank" envelope */ |
2654b031 | 77 | ENVELOPE MainEnvelope; /* the envelope around the basic letter */ |
2e3062fe EA |
78 | ADDRESS NullAddress = /* a null address */ |
79 | { "", "", "" }; | |
80 | ||
81 | /* | |
82 | ** Pointers for setproctitle. | |
83 | ** This allows "ps" listings to give more useful information. | |
84 | ** These must be kept out of BSS for frozen configuration files | |
85 | ** to work. | |
86 | */ | |
87 | ||
88 | # ifdef SETPROCTITLE | |
89 | char **Argv = NULL; /* pointer to argument vector */ | |
90 | char *LastArgv = NULL; /* end of argv */ | |
91 | # endif SETPROCTITLE | |
b3cbe40f | 92 | |
4aebfe5d EA |
93 | #ifdef DAEMON |
94 | #ifndef SMTP | |
95 | ERROR %%%% Cannot have daemon mode without SMTP %%%% ERROR | |
96 | #endif SMTP | |
97 | #endif DAEMON | |
98 | ||
e36705df | 99 | main(argc, argv, envp) |
b3cbe40f EA |
100 | int argc; |
101 | char **argv; | |
e36705df | 102 | char **envp; |
b3cbe40f EA |
103 | { |
104 | register char *p; | |
acae5a9d | 105 | char **av; |
17df0fcb | 106 | char *locname; |
b3cbe40f | 107 | extern int finis(); |
b3cbe40f | 108 | extern char Version[]; |
b3cbe40f | 109 | char *from; |
b3cbe40f | 110 | typedef int (*fnptr)(); |
be2fcca9 | 111 | STAB *st; |
9e3c0a28 | 112 | register int i; |
4388720d | 113 | bool readconfig = TRUE; |
aba51985 | 114 | bool queuemode = FALSE; /* process queue requests */ |
43e0af62 | 115 | bool nothaw; |
be2fcca9 | 116 | static bool reenter = FALSE; |
57c97d4a | 117 | char jbuf[30]; /* holds MyHostName */ |
f6a0cc15 | 118 | extern bool safefile(); |
ed45aae1 | 119 | extern time_t convtime(); |
dd1fe05b | 120 | extern putheader(), putbody(); |
be2fcca9 | 121 | extern ENVELOPE *newenvelope(); |
6e2f38be | 122 | extern intsig(); |
1dbda134 | 123 | extern char **myhostname(); |
22e6d6b8 | 124 | extern char *arpadate(); |
e36705df | 125 | extern char **environ; |
b72377c6 | 126 | |
22659072 EA |
127 | /* |
128 | ** Check to see if we reentered. | |
129 | ** This would normally happen if e_putheader or e_putbody | |
130 | ** were NULL when invoked. | |
131 | */ | |
132 | ||
b72377c6 EA |
133 | if (reenter) |
134 | { | |
135 | syserr("main: reentered!"); | |
136 | abort(); | |
137 | } | |
138 | reenter = TRUE; | |
abae7b2d | 139 | extern ADDRESS *recipient(); |
17df0fcb | 140 | bool canrename; |
b3cbe40f | 141 | |
60c0b7b2 KB |
142 | /* Enforce use of local time */ |
143 | unsetenv("TZ"); | |
144 | ||
d15bd559 EA |
145 | /* |
146 | ** Be sure we have enough file descriptors. | |
59b65d0f | 147 | ** But also be sure that 0, 1, & 2 are open. |
d15bd559 EA |
148 | */ |
149 | ||
e1098041 | 150 | i = open("/dev/null", O_RDWR); |
59b65d0f EA |
151 | while (i >= 0 && i < 2) |
152 | i = dup(i); | |
e1098041 | 153 | for (i = getdtablesize(); i > 2; --i) |
d15bd559 EA |
154 | (void) close(i); |
155 | errno = 0; | |
156 | ||
8ff78b51 EA |
157 | /* |
158 | ** Set default values for variables. | |
159 | ** These cannot be in initialized data space. | |
160 | */ | |
161 | ||
162 | setdefaults(); | |
163 | ||
bb09c502 EA |
164 | /* set up the blank envelope */ |
165 | BlankEnvelope.e_puthdr = putheader; | |
166 | BlankEnvelope.e_putbody = putbody; | |
167 | BlankEnvelope.e_xfp = NULL; | |
2e3062fe | 168 | STRUCTCOPY(NullAddress, BlankEnvelope.e_from); |
bd575ea9 EA |
169 | STRUCTCOPY(BlankEnvelope, MainEnvelope); |
170 | CurEnv = &MainEnvelope; | |
bb09c502 | 171 | |
22659072 EA |
172 | /* |
173 | ** Do a quick prescan of the argument list. | |
174 | ** We do this to find out if we can potentially thaw the | |
175 | ** configuration file. If not, we do the thaw now so that | |
176 | ** the argument processing applies to this run rather than | |
177 | ** to the run that froze the configuration. | |
178 | */ | |
179 | ||
d6b27179 | 180 | argv[argc] = NULL; |
22659072 | 181 | av = argv; |
43e0af62 | 182 | nothaw = FALSE; |
560a80d9 | 183 | while ((p = *++av) != NULL) |
22659072 | 184 | { |
560a80d9 EA |
185 | if (strncmp(p, "-C", 2) == 0) |
186 | { | |
187 | ConfFile = &p[2]; | |
188 | if (ConfFile[0] == '\0') | |
189 | ConfFile = "sendmail.cf"; | |
0e306e7f EA |
190 | (void) setgid(getrgid()); |
191 | (void) setuid(getruid()); | |
43e0af62 | 192 | nothaw = TRUE; |
560a80d9 EA |
193 | } |
194 | else if (strncmp(p, "-bz", 3) == 0) | |
43e0af62 EA |
195 | nothaw = TRUE; |
196 | # ifdef DEBUG | |
197 | else if (strncmp(p, "-d", 2) == 0) | |
198 | { | |
199 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); | |
200 | tTflag(&p[2]); | |
201 | setbuf(stdout, (char *) NULL); | |
202 | printf("Version %s\n", Version); | |
203 | } | |
204 | # endif DEBUG | |
22659072 | 205 | } |
43e0af62 | 206 | if (!nothaw) |
22659072 EA |
207 | readconfig = !thaw(FreezeFile); |
208 | ||
e36705df | 209 | /* reset the environment after the thaw */ |
42bbf376 EA |
210 | for (i = 0; i < MAXUSERENVIRON && envp[i] != NULL; i++) |
211 | UserEnviron[i] = newstr(envp[i]); | |
212 | UserEnviron[i] = NULL; | |
213 | environ = UserEnviron; | |
214 | ||
215 | # ifdef SETPROCTITLE | |
216 | /* | |
217 | ** Save start and extent of argv for setproctitle. | |
218 | */ | |
219 | ||
220 | Argv = argv; | |
577bce94 EA |
221 | if (i > 0) |
222 | LastArgv = envp[i - 1] + strlen(envp[i - 1]); | |
223 | else | |
224 | LastArgv = argv[argc - 1] + strlen(argv[argc - 1]); | |
42bbf376 | 225 | # endif SETPROCTITLE |
e36705df | 226 | |
22659072 EA |
227 | /* |
228 | ** Now do basic initialization | |
229 | */ | |
230 | ||
cbdb7357 EA |
231 | InChannel = stdin; |
232 | OutChannel = stdout; | |
b3cbe40f | 233 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) |
6e2f38be | 234 | (void) signal(SIGINT, intsig); |
eb211e2c | 235 | if (signal(SIGHUP, SIG_IGN) != SIG_IGN) |
6e2f38be EA |
236 | (void) signal(SIGHUP, intsig); |
237 | (void) signal(SIGTERM, intsig); | |
ed7382d3 | 238 | (void) signal(SIGPIPE, SIG_IGN); |
a0554f81 | 239 | OldUmask = umask(0); |
75f95954 | 240 | OpMode = MD_DELIVER; |
e673aad7 | 241 | MotherPid = getpid(); |
561c7c50 | 242 | FullName = getenv("NAME"); |
dd1fe05b | 243 | |
b3cbe40f | 244 | # ifdef LOG |
b3cbe40f | 245 | # endif LOG |
b3cbe40f EA |
246 | errno = 0; |
247 | from = NULL; | |
378e8da7 | 248 | |
4388720d | 249 | if (readconfig) |
1dbda134 | 250 | { |
4388720d EA |
251 | /* initialize some macros, etc. */ |
252 | initmacros(); | |
253 | ||
254 | /* hostname */ | |
255 | av = myhostname(jbuf, sizeof jbuf); | |
256 | if (jbuf[0] != '\0') | |
257 | { | |
43e0af62 EA |
258 | #ifdef DEBUG |
259 | if (tTd(0, 4)) | |
260 | printf("canonical name: %s\n", jbuf); | |
261 | #endif DEBUG | |
4388720d EA |
262 | p = newstr(jbuf); |
263 | define('w', p, CurEnv); | |
264 | setclass('w', p); | |
265 | } | |
266 | while (av != NULL && *av != NULL) | |
43e0af62 EA |
267 | { |
268 | #ifdef DEBUG | |
269 | if (tTd(0, 4)) | |
270 | printf("\ta.k.a.: %s\n", *av); | |
271 | #endif DEBUG | |
4388720d | 272 | setclass('w', *av++); |
43e0af62 | 273 | } |
4388720d EA |
274 | |
275 | /* version */ | |
276 | define('v', Version, CurEnv); | |
1dbda134 | 277 | } |
378e8da7 EA |
278 | |
279 | /* current time */ | |
22e6d6b8 | 280 | define('b', arpadate((char *) NULL), CurEnv); |
378e8da7 | 281 | |
a691a4a6 | 282 | /* |
c1e24818 | 283 | ** Crack argv. |
a691a4a6 EA |
284 | */ |
285 | ||
acae5a9d | 286 | av = argv; |
26a3626c EA |
287 | p = rindex(*av, '/'); |
288 | if (p++ == NULL) | |
289 | p = *av; | |
290 | if (strcmp(p, "newaliases") == 0) | |
75f95954 | 291 | OpMode = MD_INITALIAS; |
26a3626c | 292 | else if (strcmp(p, "mailq") == 0) |
75f95954 | 293 | OpMode = MD_PRINT; |
34fe0a9b EA |
294 | else if (strcmp(p, "smtpd") == 0) |
295 | OpMode = MD_DAEMON; | |
3110074f | 296 | while ((p = *++av) != NULL && p[0] == '-') |
a691a4a6 | 297 | { |
c1e24818 | 298 | switch (p[1]) |
a691a4a6 | 299 | { |
75f95954 EA |
300 | case 'b': /* operations mode */ |
301 | switch (p[2]) | |
c1e24818 | 302 | { |
75f95954 EA |
303 | case MD_DAEMON: |
304 | # ifndef DAEMON | |
305 | syserr("Daemon mode not implemented"); | |
306 | break; | |
307 | # endif DAEMON | |
308 | case MD_SMTP: | |
309 | # ifndef SMTP | |
c1e24818 | 310 | syserr("I don't speak SMTP"); |
75f95954 | 311 | break; |
c1e24818 | 312 | # endif SMTP |
75f95954 EA |
313 | case MD_ARPAFTP: |
314 | case MD_DELIVER: | |
315 | case MD_VERIFY: | |
316 | case MD_TEST: | |
317 | case MD_INITALIAS: | |
318 | case MD_PRINT: | |
319 | case MD_FREEZE: | |
320 | OpMode = p[2]; | |
321 | break; | |
322 | ||
323 | default: | |
324 | syserr("Invalid operation mode %c", p[2]); | |
325 | break; | |
c1e24818 EA |
326 | } |
327 | break; | |
328 | ||
560a80d9 | 329 | case 'C': /* select configuration file (already done) */ |
c1e24818 | 330 | break; |
a691a4a6 | 331 | |
137c2d1f | 332 | #ifdef DEBUG |
43e0af62 | 333 | case 'd': /* debugging -- redo in case frozen */ |
c1e24818 EA |
334 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); |
335 | tTflag(&p[2]); | |
336 | setbuf(stdout, (char *) NULL); | |
a29056d8 | 337 | #ifdef NAMED_BIND |
137c2d1f | 338 | _res.options |= RES_DEBUG; |
a29056d8 | 339 | #endif |
c1e24818 | 340 | break; |
137c2d1f | 341 | #endif |
b3cbe40f | 342 | |
b3cbe40f | 343 | case 'f': /* from address */ |
c1e24818 | 344 | case 'r': /* obsolete -f flag */ |
b3cbe40f | 345 | p += 2; |
3110074f | 346 | if (*p == '\0' && ((p = *++av) == NULL || *p == '-')) |
b3cbe40f | 347 | { |
acae5a9d | 348 | p = *++av; |
3110074f | 349 | if (p == NULL || *p == '-') |
b3cbe40f EA |
350 | { |
351 | syserr("No \"from\" person"); | |
acae5a9d | 352 | av--; |
b3cbe40f EA |
353 | break; |
354 | } | |
355 | } | |
22659072 | 356 | if (from != NULL) |
b3cbe40f EA |
357 | { |
358 | syserr("More than one \"from\" person"); | |
359 | break; | |
360 | } | |
2e3062fe | 361 | from = newstr(p); |
b3cbe40f EA |
362 | break; |
363 | ||
6da7b890 | 364 | case 'F': /* set full name */ |
74c5fe7c | 365 | p += 2; |
3110074f | 366 | if (*p == '\0' && ((p = *++av) == NULL || *p == '-')) |
74c5fe7c | 367 | { |
3110074f EA |
368 | syserr("Bad -F flag"); |
369 | av--; | |
370 | break; | |
74c5fe7c | 371 | } |
2e3062fe | 372 | FullName = newstr(p); |
6da7b890 EA |
373 | break; |
374 | ||
b3cbe40f EA |
375 | case 'h': /* hop count */ |
376 | p += 2; | |
3110074f | 377 | if (*p == '\0' && ((p = *++av) == NULL || !isdigit(*p))) |
b3cbe40f | 378 | { |
3110074f EA |
379 | syserr("Bad hop count (%s)", p); |
380 | av--; | |
381 | break; | |
b3cbe40f | 382 | } |
7338e3d4 | 383 | CurEnv->e_hopcount = atoi(p); |
b3cbe40f | 384 | break; |
b3cbe40f | 385 | |
c1e24818 EA |
386 | case 'n': /* don't alias */ |
387 | NoAlias = TRUE; | |
d59b067a EA |
388 | break; |
389 | ||
c1e24818 EA |
390 | case 'o': /* set option */ |
391 | setoption(p[2], &p[3], FALSE, TRUE); | |
14a39063 | 392 | break; |
cbdb7357 | 393 | |
ed45aae1 | 394 | case 'q': /* run queue files at intervals */ |
884a20cb | 395 | # ifdef QUEUE |
aba51985 | 396 | queuemode = TRUE; |
25b9d645 | 397 | QueueIntvl = convtime(&p[2]); |
884a20cb EA |
398 | # else QUEUE |
399 | syserr("I don't know about queues"); | |
400 | # endif QUEUE | |
ed45aae1 EA |
401 | break; |
402 | ||
c1e24818 EA |
403 | case 't': /* read recipients from message */ |
404 | GrabTo = TRUE; | |
405 | break; | |
406 | ||
407 | /* compatibility flags */ | |
c1e24818 EA |
408 | case 'c': /* connect to non-local mailers */ |
409 | case 'e': /* error message disposition */ | |
410 | case 'i': /* don't let dot stop me */ | |
411 | case 'm': /* send to me too */ | |
412 | case 'T': /* set timeout interval */ | |
413 | case 'v': /* give blow-by-blow description */ | |
414 | setoption(p[1], &p[2], FALSE, TRUE); | |
35cc3fad EA |
415 | break; |
416 | ||
c1e24818 EA |
417 | case 's': /* save From lines in headers */ |
418 | setoption('f', &p[2], FALSE, TRUE); | |
b3cbe40f | 419 | break; |
26a3626c EA |
420 | |
421 | # ifdef DBM | |
422 | case 'I': /* initialize alias DBM file */ | |
75f95954 | 423 | OpMode = MD_INITALIAS; |
26a3626c EA |
424 | break; |
425 | # endif DBM | |
b3cbe40f EA |
426 | } |
427 | } | |
428 | ||
9e3c0a28 | 429 | /* |
2cce0c26 EA |
430 | ** Do basic initialization. |
431 | ** Read system control file. | |
179c1218 | 432 | ** Extract special fields for local use. |
9e3c0a28 EA |
433 | */ |
434 | ||
46f6ec52 EA |
435 | if (OpMode == MD_FREEZE || readconfig) |
436 | readcf(ConfFile); | |
22659072 | 437 | |
75f95954 | 438 | switch (OpMode) |
acae5a9d | 439 | { |
26a3626c | 440 | case MD_FREEZE: |
a9621daf | 441 | /* this is critical to avoid forgeries of the frozen config */ |
0e306e7f EA |
442 | (void) setgid(getgid()); |
443 | (void) setuid(getuid()); | |
a9621daf EA |
444 | |
445 | /* freeze the configuration */ | |
8fe4fb9b | 446 | freeze(FreezeFile); |
acae5a9d | 447 | exit(EX_OK); |
26a3626c EA |
448 | |
449 | case MD_INITALIAS: | |
450 | Verbose = TRUE; | |
451 | break; | |
acae5a9d | 452 | } |
179c1218 | 453 | |
6130649c EA |
454 | /* do heuristic mode adjustment */ |
455 | if (Verbose) | |
75f95954 EA |
456 | { |
457 | /* turn off noconnect option */ | |
458 | setoption('c', "F", TRUE, FALSE); | |
459 | ||
460 | /* turn on interactive delivery */ | |
461 | setoption('d', "", TRUE, FALSE); | |
462 | } | |
6130649c | 463 | |
179c1218 | 464 | /* our name for SMTP codes */ |
a73ae8ac | 465 | expand("\001j", jbuf, &jbuf[sizeof jbuf - 1], CurEnv); |
57c97d4a | 466 | MyHostName = jbuf; |
d6a28dd8 | 467 | |
179c1218 EA |
468 | /* the indices of local and program mailers */ |
469 | st = stab("local", ST_MAILER, ST_FIND); | |
470 | if (st == NULL) | |
471 | syserr("No local mailer defined"); | |
472 | else | |
473 | LocalMailer = st->s_mailer; | |
474 | st = stab("prog", ST_MAILER, ST_FIND); | |
475 | if (st == NULL) | |
476 | syserr("No prog mailer defined"); | |
477 | else | |
478 | ProgMailer = st->s_mailer; | |
479 | ||
6bbaf971 EA |
480 | /* operate in queue directory */ |
481 | if (chdir(QueueDir) < 0) | |
482 | { | |
483 | syserr("cannot chdir(%s)", QueueDir); | |
484 | exit(EX_SOFTWARE); | |
485 | } | |
486 | ||
64912e7e | 487 | /* |
55f0da62 | 488 | ** Do operation-mode-dependent initialization. |
64912e7e EA |
489 | */ |
490 | ||
55f0da62 | 491 | switch (OpMode) |
64912e7e | 492 | { |
55f0da62 EA |
493 | case MD_PRINT: |
494 | /* print the queue */ | |
74f37936 | 495 | #ifdef QUEUE |
64912e7e EA |
496 | dropenvelope(CurEnv); |
497 | printqueue(); | |
498 | exit(EX_OK); | |
74f37936 EA |
499 | #else QUEUE |
500 | usrerr("No queue to print"); | |
501 | finis(); | |
502 | #endif QUEUE | |
8acb5142 | 503 | |
55f0da62 EA |
504 | case MD_INITALIAS: |
505 | /* initialize alias database */ | |
506 | initaliases(AliasFile, TRUE); | |
f4dbf345 | 507 | exit(EX_OK); |
cdb17311 | 508 | |
55f0da62 EA |
509 | case MD_DAEMON: |
510 | /* don't open alias database -- done in srvrsmtp */ | |
511 | break; | |
512 | ||
513 | default: | |
514 | /* open the alias database */ | |
515 | initaliases(AliasFile, FALSE); | |
516 | break; | |
517 | } | |
518 | ||
9c6d4c70 | 519 | # ifdef DEBUG |
9678c96d | 520 | if (tTd(0, 15)) |
9c6d4c70 | 521 | { |
f6a0cc15 | 522 | /* print configuration table (or at least part of it) */ |
9c6d4c70 EA |
523 | printrules(); |
524 | for (i = 0; i < MAXMAILERS; i++) | |
525 | { | |
526 | register struct mailer *m = Mailer[i]; | |
1dbda134 | 527 | int j; |
9c6d4c70 EA |
528 | |
529 | if (m == NULL) | |
530 | continue; | |
97ad25b6 EA |
531 | printf("mailer %d (%s): P=%s S=%d R=%d M=%ld F=", i, m->m_name, |
532 | m->m_mailer, m->m_s_rwset, m->m_r_rwset, | |
533 | m->m_maxsize); | |
1dbda134 EA |
534 | for (j = '\0'; j <= '\177'; j++) |
535 | if (bitnset(j, m->m_flags)) | |
0e306e7f | 536 | (void) putchar(j); |
1dbda134 | 537 | printf(" E="); |
b3ef02a2 EA |
538 | xputs(m->m_eol); |
539 | printf("\n"); | |
9c6d4c70 EA |
540 | } |
541 | } | |
542 | # endif DEBUG | |
543 | ||
be2fcca9 EA |
544 | /* |
545 | ** Switch to the main envelope. | |
546 | */ | |
547 | ||
548 | CurEnv = newenvelope(&MainEnvelope); | |
e6f08ab1 | 549 | MainEnvelope.e_flags = BlankEnvelope.e_flags; |
be2fcca9 | 550 | |
cf69a203 EA |
551 | /* |
552 | ** If test mode, read addresses from stdin and process. | |
553 | */ | |
554 | ||
75f95954 | 555 | if (OpMode == MD_TEST) |
cf69a203 EA |
556 | { |
557 | char buf[MAXLINE]; | |
558 | ||
50435450 | 559 | printf("ADDRESS TEST MODE\nEnter <ruleset> <address>\n"); |
cf69a203 EA |
560 | for (;;) |
561 | { | |
562 | register char **pvp; | |
50435450 | 563 | char *q; |
50435450 | 564 | extern char *DelimChar; |
cf69a203 EA |
565 | |
566 | printf("> "); | |
0e306e7f | 567 | (void) fflush(stdout); |
cf69a203 EA |
568 | if (fgets(buf, sizeof buf, stdin) == NULL) |
569 | finis(); | |
ecfd2c8e | 570 | for (p = buf; isspace(*p); *p++) |
cf69a203 | 571 | continue; |
ecfd2c8e EA |
572 | q = p; |
573 | while (*p != '\0' && !isspace(*p)) | |
574 | p++; | |
cf69a203 EA |
575 | if (*p == '\0') |
576 | continue; | |
50435450 EA |
577 | *p = '\0'; |
578 | do | |
ecfd2c8e | 579 | { |
217a0102 EA |
580 | extern char **prescan(); |
581 | char pvpbuf[PSBUFSIZE]; | |
582 | ||
583 | pvp = prescan(++p, ',', pvpbuf); | |
50435450 | 584 | if (pvp == NULL) |
ecfd2c8e | 585 | continue; |
50435450 EA |
586 | rewrite(pvp, 3); |
587 | p = q; | |
588 | while (*p != '\0') | |
589 | { | |
590 | rewrite(pvp, atoi(p)); | |
591 | while (*p != '\0' && *p++ != ',') | |
592 | continue; | |
593 | } | |
594 | } while (*(p = DelimChar) != '\0'); | |
cf69a203 EA |
595 | } |
596 | } | |
597 | ||
e3cd595c EA |
598 | # ifdef QUEUE |
599 | /* | |
600 | ** If collecting stuff from the queue, go start doing that. | |
601 | */ | |
602 | ||
7b21425b | 603 | if (queuemode && OpMode != MD_DAEMON && QueueIntvl == 0) |
e3cd595c EA |
604 | { |
605 | runqueue(FALSE); | |
606 | finis(); | |
607 | } | |
608 | # endif QUEUE | |
609 | ||
f6a0cc15 EA |
610 | /* |
611 | ** If a daemon, wait for a request. | |
612 | ** getrequests will always return in a child. | |
25b9d645 | 613 | ** If we should also be processing the queue, start |
19147b2d EA |
614 | ** doing it in background. |
615 | ** We check for any errors that might have happened | |
616 | ** during startup. | |
f6a0cc15 EA |
617 | */ |
618 | ||
75f95954 | 619 | if (OpMode == MD_DAEMON || QueueIntvl != 0) |
25b9d645 | 620 | { |
9678c96d | 621 | if (!tTd(0, 1)) |
58b27aa4 | 622 | { |
fcdf8200 | 623 | /* put us in background */ |
58b27aa4 EA |
624 | i = fork(); |
625 | if (i < 0) | |
626 | syserr("daemon: cannot fork"); | |
627 | if (i != 0) | |
628 | exit(0); | |
fcdf8200 EA |
629 | |
630 | /* get our pid right */ | |
d9162460 | 631 | MotherPid = getpid(); |
fcdf8200 EA |
632 | |
633 | /* disconnect from our controlling tty */ | |
d188728a | 634 | disconnect(TRUE); |
58b27aa4 | 635 | } |
7338e3d4 | 636 | |
25b9d645 EA |
637 | # ifdef QUEUE |
638 | if (queuemode) | |
f309127e | 639 | { |
25b9d645 | 640 | runqueue(TRUE); |
75f95954 | 641 | if (OpMode != MD_DAEMON) |
f309127e EA |
642 | for (;;) |
643 | pause(); | |
644 | } | |
25b9d645 | 645 | # endif QUEUE |
7338e3d4 EA |
646 | dropenvelope(CurEnv); |
647 | ||
648 | #ifdef DAEMON | |
f6a0cc15 | 649 | getrequests(); |
2a16bae3 EA |
650 | |
651 | /* at this point we are in a child: reset state */ | |
75f95954 | 652 | OpMode = MD_SMTP; |
7338e3d4 | 653 | (void) newenvelope(CurEnv); |
912acb74 | 654 | openxscript(CurEnv); |
14a39063 | 655 | #endif DAEMON |
7338e3d4 | 656 | } |
88039044 EA |
657 | |
658 | # ifdef SMTP | |
659 | /* | |
660 | ** If running SMTP protocol, start collecting and executing | |
661 | ** commands. This will never return. | |
662 | */ | |
663 | ||
75f95954 | 664 | if (OpMode == MD_SMTP) |
88039044 EA |
665 | smtp(); |
666 | # endif SMTP | |
667 | ||
f6a0cc15 | 668 | /* |
e6f08ab1 | 669 | ** Do basic system initialization and set the sender |
f6a0cc15 EA |
670 | */ |
671 | ||
e6f08ab1 | 672 | initsys(); |
cbdb7357 | 673 | setsender(from); |
a9e0e597 | 674 | |
3110074f | 675 | if (OpMode != MD_ARPAFTP && *av == NULL && !GrabTo) |
e863b1fa | 676 | { |
2e3062fe EA |
677 | usrerr("Recipient names must be specified"); |
678 | ||
679 | /* collect body for UUCP return */ | |
680 | if (OpMode != MD_VERIFY) | |
681 | collect(FALSE); | |
e863b1fa EA |
682 | finis(); |
683 | } | |
75f95954 EA |
684 | if (OpMode == MD_VERIFY) |
685 | SendMode = SM_VERIFY; | |
b3cbe40f | 686 | |
b3cbe40f | 687 | /* |
d6b27179 | 688 | ** Scan argv and deliver the message to everyone. |
b3cbe40f EA |
689 | */ |
690 | ||
acae5a9d | 691 | sendtoargv(av); |
b3cbe40f | 692 | |
72e9b3cc | 693 | /* if we have had errors sofar, arrange a meaningful exit stat */ |
d916f0ca | 694 | if (Errors > 0 && ExitStat == EX_OK) |
a4b004a6 | 695 | ExitStat = EX_USAGE; |
a4b004a6 | 696 | |
dc39c568 EA |
697 | /* |
698 | ** Read the input mail. | |
699 | */ | |
700 | ||
2654b031 | 701 | CurEnv->e_to = NULL; |
75f95954 | 702 | if (OpMode != MD_VERIFY || GrabTo) |
49086753 | 703 | collect(FALSE); |
d829793b | 704 | errno = 0; |
35cc3fad | 705 | |
4e1f4d4b | 706 | /* collect statistics */ |
7338e3d4 EA |
707 | if (OpMode != MD_VERIFY) |
708 | markstats(CurEnv, (ADDRESS *) NULL); | |
b3cbe40f | 709 | |
d6b27179 | 710 | # ifdef DEBUG |
9678c96d | 711 | if (tTd(1, 1)) |
2654b031 | 712 | printf("From person = \"%s\"\n", CurEnv->e_from.q_paddr); |
d6b27179 EA |
713 | # endif DEBUG |
714 | ||
b3cbe40f EA |
715 | /* |
716 | ** Actually send everything. | |
d6b27179 | 717 | ** If verifying, just ack. |
b3cbe40f EA |
718 | */ |
719 | ||
7338e3d4 EA |
720 | CurEnv->e_from.q_flags |= QDONTSEND; |
721 | CurEnv->e_to = NULL; | |
f7e74083 | 722 | sendall(CurEnv, SM_DEFAULT); |
b3cbe40f EA |
723 | |
724 | /* | |
725 | ** All done. | |
726 | */ | |
727 | ||
728 | finis(); | |
729 | } | |
730 | \f/* | |
731 | ** FINIS -- Clean up and exit. | |
732 | ** | |
b3cbe40f EA |
733 | ** Parameters: |
734 | ** none | |
735 | ** | |
736 | ** Returns: | |
737 | ** never | |
738 | ** | |
739 | ** Side Effects: | |
96faada8 | 740 | ** exits sendmail |
b3cbe40f EA |
741 | */ |
742 | ||
743 | finis() | |
744 | { | |
aba51985 | 745 | # ifdef DEBUG |
9678c96d | 746 | if (tTd(2, 1)) |
e6f08ab1 | 747 | printf("\n====finis: stat %d e_flags %o\n", ExitStat, CurEnv->e_flags); |
aba51985 EA |
748 | # endif DEBUG |
749 | ||
7338e3d4 | 750 | /* clean up temp files */ |
912acb74 | 751 | CurEnv->e_to = NULL; |
e6f08ab1 | 752 | dropenvelope(CurEnv); |
b3cbe40f | 753 | |
7338e3d4 EA |
754 | /* post statistics */ |
755 | poststats(StatFile); | |
68f0b54c | 756 | |
7338e3d4 | 757 | /* and exit */ |
36a4e219 EA |
758 | # ifdef LOG |
759 | if (LogLevel > 11) | |
760 | syslog(LOG_DEBUG, "finis, pid=%d", getpid()); | |
761 | # endif LOG | |
c8ec8736 EA |
762 | if (ExitStat == EX_TEMPFAIL) |
763 | ExitStat = EX_OK; | |
b3cbe40f EA |
764 | exit(ExitStat); |
765 | } | |
766 | \f/* | |
6e2f38be EA |
767 | ** INTSIG -- clean up on interrupt |
768 | ** | |
7338e3d4 EA |
769 | ** This just arranges to exit. It pessimises in that it |
770 | ** may resend a message. | |
6e2f38be EA |
771 | ** |
772 | ** Parameters: | |
773 | ** none. | |
774 | ** | |
775 | ** Returns: | |
776 | ** none. | |
777 | ** | |
778 | ** Side Effects: | |
7338e3d4 | 779 | ** Unlocks the current job. |
6e2f38be EA |
780 | */ |
781 | ||
782 | intsig() | |
783 | { | |
7338e3d4 EA |
784 | FileName = NULL; |
785 | unlockqueue(CurEnv); | |
786 | exit(EX_OK); | |
6e2f38be EA |
787 | } |
788 | \f/* | |
721fad23 EA |
789 | ** INITMACROS -- initialize the macro system |
790 | ** | |
791 | ** This just involves defining some macros that are actually | |
792 | ** used internally as metasymbols to be themselves. | |
793 | ** | |
794 | ** Parameters: | |
795 | ** none. | |
796 | ** | |
797 | ** Returns: | |
798 | ** none. | |
799 | ** | |
800 | ** Side Effects: | |
801 | ** initializes several macros to be themselves. | |
802 | */ | |
803 | ||
9dbc8d99 | 804 | struct metamac |
721fad23 | 805 | { |
9dbc8d99 EA |
806 | char metaname; |
807 | char metaval; | |
808 | }; | |
721fad23 | 809 | |
9dbc8d99 EA |
810 | struct metamac MetaMacros[] = |
811 | { | |
eca244ca | 812 | /* LHS pattern matching characters */ |
2018e82d | 813 | '*', MATCHZANY, '+', MATCHANY, '-', MATCHONE, '=', MATCHCLASS, |
9f39d7cd | 814 | '~', MATCHNCLASS, |
721fad23 EA |
815 | |
816 | /* these are RHS metasymbols */ | |
2018e82d | 817 | '#', CANONNET, '@', CANONHOST, ':', CANONUSER, '>', CALLSUBR, |
41173b8f | 818 | '{', MATCHLOOKUP, '}', MATCHELOOKUP, |
721fad23 | 819 | |
eca244ca | 820 | /* the conditional operations */ |
2018e82d | 821 | '?', CONDIF, '|', CONDELSE, '.', CONDFI, |
9dbc8d99 | 822 | |
eca244ca | 823 | /* and finally the hostname lookup characters */ |
217a0102 | 824 | '[', HOSTBEGIN, ']', HOSTEND, |
eca244ca | 825 | |
9dbc8d99 | 826 | '\0' |
721fad23 EA |
827 | }; |
828 | ||
829 | initmacros() | |
830 | { | |
9dbc8d99 EA |
831 | register struct metamac *m; |
832 | char buf[5]; | |
833 | register int c; | |
721fad23 | 834 | |
9dbc8d99 EA |
835 | for (m = MetaMacros; m->metaname != '\0'; m++) |
836 | { | |
837 | buf[0] = m->metaval; | |
838 | buf[1] = '\0'; | |
7338e3d4 | 839 | define(m->metaname, newstr(buf), CurEnv); |
9dbc8d99 EA |
840 | } |
841 | buf[0] = MATCHREPL; | |
842 | buf[2] = '\0'; | |
843 | for (c = '0'; c <= '9'; c++) | |
844 | { | |
845 | buf[1] = c; | |
7338e3d4 | 846 | define(c, newstr(buf), CurEnv); |
9dbc8d99 | 847 | } |
721fad23 | 848 | } |
dd1fe05b | 849 | \f/* |
acae5a9d EA |
850 | ** FREEZE -- freeze BSS & allocated memory |
851 | ** | |
852 | ** This will be used to efficiently load the configuration file. | |
853 | ** | |
854 | ** Parameters: | |
8fe4fb9b | 855 | ** freezefile -- the name of the file to freeze to. |
acae5a9d EA |
856 | ** |
857 | ** Returns: | |
858 | ** none. | |
859 | ** | |
860 | ** Side Effects: | |
8fe4fb9b | 861 | ** Writes BSS and malloc'ed memory to freezefile |
acae5a9d EA |
862 | */ |
863 | ||
7338e3d4 | 864 | union frz |
acae5a9d | 865 | { |
7338e3d4 EA |
866 | char frzpad[BUFSIZ]; /* insure we are on a BUFSIZ boundary */ |
867 | struct | |
868 | { | |
869 | time_t frzstamp; /* timestamp on this freeze */ | |
870 | char *frzbrk; /* the current break */ | |
2e3062fe EA |
871 | char *frzedata; /* address of edata */ |
872 | char *frzend; /* address of end */ | |
7338e3d4 EA |
873 | char frzver[252]; /* sendmail version */ |
874 | } frzinfo; | |
acae5a9d EA |
875 | }; |
876 | ||
8fe4fb9b EA |
877 | freeze(freezefile) |
878 | char *freezefile; | |
acae5a9d EA |
879 | { |
880 | int f; | |
7338e3d4 | 881 | union frz fhdr; |
2e3062fe | 882 | extern char edata, end; |
acae5a9d | 883 | extern char *sbrk(); |
912acb74 | 884 | extern char Version[]; |
acae5a9d | 885 | |
8fe4fb9b | 886 | if (freezefile == NULL) |
acae5a9d EA |
887 | return; |
888 | ||
889 | /* try to open the freeze file */ | |
8fe4fb9b | 890 | f = creat(freezefile, FileMode); |
acae5a9d EA |
891 | if (f < 0) |
892 | { | |
893 | syserr("Cannot freeze"); | |
894 | errno = 0; | |
895 | return; | |
896 | } | |
897 | ||
898 | /* build the freeze header */ | |
7338e3d4 EA |
899 | fhdr.frzinfo.frzstamp = curtime(); |
900 | fhdr.frzinfo.frzbrk = sbrk(0); | |
2e3062fe EA |
901 | fhdr.frzinfo.frzedata = &edata; |
902 | fhdr.frzinfo.frzend = &end; | |
0e306e7f | 903 | (void) strcpy(fhdr.frzinfo.frzver, Version); |
acae5a9d EA |
904 | |
905 | /* write out the freeze header */ | |
611b763d | 906 | if (write(f, (char *) &fhdr, sizeof fhdr) != sizeof fhdr || |
34fe0a9b EA |
907 | write(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
908 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
7338e3d4 | 909 | { |
acae5a9d | 910 | syserr("Cannot freeze"); |
7338e3d4 | 911 | } |
acae5a9d EA |
912 | |
913 | /* fine, clean up */ | |
914 | (void) close(f); | |
915 | } | |
916 | \f/* | |
917 | ** THAW -- read in the frozen configuration file. | |
918 | ** | |
919 | ** Parameters: | |
8fe4fb9b | 920 | ** freezefile -- the name of the file to thaw from. |
acae5a9d EA |
921 | ** |
922 | ** Returns: | |
923 | ** TRUE if it successfully read the freeze file. | |
924 | ** FALSE otherwise. | |
925 | ** | |
926 | ** Side Effects: | |
8fe4fb9b | 927 | ** reads freezefile in to BSS area. |
acae5a9d EA |
928 | */ |
929 | ||
8fe4fb9b EA |
930 | thaw(freezefile) |
931 | char *freezefile; | |
acae5a9d EA |
932 | { |
933 | int f; | |
7338e3d4 | 934 | union frz fhdr; |
a59237a4 | 935 | extern char edata, end; |
912acb74 | 936 | extern char Version[]; |
17a67c62 | 937 | extern caddr_t brk(); |
acae5a9d | 938 | |
8fe4fb9b | 939 | if (freezefile == NULL) |
acae5a9d EA |
940 | return (FALSE); |
941 | ||
942 | /* open the freeze file */ | |
8fe4fb9b | 943 | f = open(freezefile, 0); |
acae5a9d EA |
944 | if (f < 0) |
945 | { | |
946 | errno = 0; | |
947 | return (FALSE); | |
948 | } | |
949 | ||
950 | /* read in the header */ | |
611b763d | 951 | if (read(f, (char *) &fhdr, sizeof fhdr) < sizeof fhdr || |
2e3062fe EA |
952 | fhdr.frzinfo.frzedata != &edata || |
953 | fhdr.frzinfo.frzend != &end || | |
7338e3d4 | 954 | strcmp(fhdr.frzinfo.frzver, Version) != 0) |
acae5a9d EA |
955 | { |
956 | (void) close(f); | |
957 | return (FALSE); | |
958 | } | |
959 | ||
960 | /* arrange to have enough space */ | |
17a67c62 | 961 | if (brk(fhdr.frzinfo.frzbrk) == (caddr_t) -1) |
acae5a9d | 962 | { |
7338e3d4 | 963 | syserr("Cannot break to %x", fhdr.frzinfo.frzbrk); |
acae5a9d EA |
964 | (void) close(f); |
965 | return (FALSE); | |
966 | } | |
967 | ||
968 | /* now read in the freeze file */ | |
34fe0a9b EA |
969 | if (read(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
970 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
acae5a9d EA |
971 | { |
972 | /* oops! we have trashed memory..... */ | |
0e306e7f | 973 | (void) write(2, "Cannot read freeze file\n", 24); |
7338e3d4 | 974 | _exit(EX_SOFTWARE); |
acae5a9d EA |
975 | } |
976 | ||
977 | (void) close(f); | |
978 | return (TRUE); | |
979 | } | |
813d8709 EA |
980 | \f/* |
981 | ** DISCONNECT -- remove our connection with any foreground process | |
982 | ** | |
983 | ** Parameters: | |
d188728a EA |
984 | ** fulldrop -- if set, we should also drop the controlling |
985 | ** TTY if possible -- this should only be done when | |
986 | ** setting up the daemon since otherwise UUCP can | |
987 | ** leave us trying to open a dialin, and we will | |
988 | ** wait for the carrier. | |
813d8709 EA |
989 | ** |
990 | ** Returns: | |
991 | ** none | |
992 | ** | |
993 | ** Side Effects: | |
994 | ** Trys to insure that we are immune to vagaries of | |
995 | ** the controlling tty. | |
996 | */ | |
997 | ||
d188728a EA |
998 | disconnect(fulldrop) |
999 | bool fulldrop; | |
813d8709 EA |
1000 | { |
1001 | int fd; | |
1002 | ||
e6f08ab1 EA |
1003 | #ifdef DEBUG |
1004 | if (tTd(52, 1)) | |
b9accadd EA |
1005 | printf("disconnect: In %d Out %d\n", fileno(InChannel), |
1006 | fileno(OutChannel)); | |
e6f08ab1 | 1007 | if (tTd(52, 5)) |
813d8709 | 1008 | { |
e6f08ab1 EA |
1009 | printf("don't\n"); |
1010 | return; | |
813d8709 | 1011 | } |
e6f08ab1 | 1012 | #endif DEBUG |
813d8709 EA |
1013 | |
1014 | /* be sure we don't get nasty signals */ | |
0e306e7f EA |
1015 | (void) signal(SIGHUP, SIG_IGN); |
1016 | (void) signal(SIGINT, SIG_IGN); | |
1017 | (void) signal(SIGQUIT, SIG_IGN); | |
813d8709 EA |
1018 | |
1019 | /* we can't communicate with our caller, so.... */ | |
7338e3d4 EA |
1020 | HoldErrs = TRUE; |
1021 | ErrorMode = EM_MAIL; | |
813d8709 EA |
1022 | Verbose = FALSE; |
1023 | ||
1024 | /* all input from /dev/null */ | |
813d8709 | 1025 | if (InChannel != stdin) |
b9accadd EA |
1026 | { |
1027 | (void) fclose(InChannel); | |
1028 | InChannel = stdin; | |
1029 | } | |
1030 | (void) freopen("/dev/null", "r", stdin); | |
813d8709 EA |
1031 | |
1032 | /* output to the transcript */ | |
b9accadd | 1033 | if (OutChannel != stdout) |
813d8709 | 1034 | { |
b9accadd EA |
1035 | (void) fclose(OutChannel); |
1036 | OutChannel = stdout; | |
813d8709 | 1037 | } |
912acb74 EA |
1038 | if (CurEnv->e_xfp == NULL) |
1039 | CurEnv->e_xfp = fopen("/dev/null", "w"); | |
b9accadd EA |
1040 | (void) fflush(stdout); |
1041 | (void) close(1); | |
1042 | (void) close(2); | |
912acb74 | 1043 | while ((fd = dup(fileno(CurEnv->e_xfp))) < 2 && fd > 0) |
b9accadd | 1044 | continue; |
813d8709 | 1045 | |
e6f08ab1 EA |
1046 | #ifdef TIOCNOTTY |
1047 | /* drop our controlling TTY completely if possible */ | |
d188728a | 1048 | if (fulldrop) |
e6f08ab1 | 1049 | { |
d188728a EA |
1050 | fd = open("/dev/tty", 2); |
1051 | if (fd >= 0) | |
1052 | { | |
17a67c62 | 1053 | (void) ioctl(fd, (int) TIOCNOTTY, (char *) 0); |
d188728a EA |
1054 | (void) close(fd); |
1055 | } | |
17a67c62 | 1056 | (void) setpgrp(0, 0); |
70faa7c8 | 1057 | errno = 0; |
e6f08ab1 EA |
1058 | } |
1059 | #endif TIOCNOTTY | |
1060 | ||
813d8709 EA |
1061 | # ifdef LOG |
1062 | if (LogLevel > 11) | |
1063 | syslog(LOG_DEBUG, "in background, pid=%d", getpid()); | |
1064 | # endif LOG | |
1065 | ||
1066 | errno = 0; | |
1067 | } |