Commit | Line | Data |
---|---|---|
aeb2545d DF |
1 | /* |
2 | ** Sendmail | |
3 | ** Copyright (c) 1983 Eric P. Allman | |
4 | ** Berkeley, California | |
5 | ** | |
6 | ** Copyright (c) 1983 Regents of the University of California. | |
7 | ** All rights reserved. The Berkeley software License Agreement | |
8 | ** specifies the terms and conditions for redistribution. | |
9 | */ | |
10 | ||
11 | #ifndef lint | |
12 | char copyright[] = | |
13 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
14 | All rights reserved.\n"; | |
15 | #endif not lint | |
16 | ||
17 | #ifndef lint | |
60c0b7b2 | 18 | static char SccsId[] = "@(#)main.c 5.13 (Berkeley) %G%"; |
aeb2545d DF |
19 | #endif not lint |
20 | ||
ed45aae1 | 21 | # define _DEFINE |
b3cbe40f | 22 | # include <signal.h> |
83f674d8 | 23 | # include <sgtty.h> |
96faada8 | 24 | # include "sendmail.h" |
b3cbe40f | 25 | |
17a67c62 | 26 | # ifdef lint |
2e3062fe | 27 | char edata, end; |
17a67c62 EA |
28 | # endif lint |
29 | ||
b3cbe40f | 30 | /* |
96faada8 | 31 | ** SENDMAIL -- Post mail to a set of destinations. |
b3cbe40f EA |
32 | ** |
33 | ** This is the basic mail router. All user mail programs should | |
96faada8 | 34 | ** call this routine to actually deliver mail. Sendmail in |
b3cbe40f EA |
35 | ** turn calls a bunch of mail servers that do the real work of |
36 | ** delivering the mail. | |
37 | ** | |
3199e4f3 EA |
38 | ** Sendmail is driven by tables read in from /usr/lib/sendmail.cf |
39 | ** (read by readcf.c). Some more static configuration info, | |
40 | ** including some code that you may want to tailor for your | |
41 | ** installation, is in conf.c. You may also want to touch | |
42 | ** daemon.c (if you have some other IPC mechanism), acct.c | |
43 | ** (to change your accounting), names.c (to adjust the name | |
44 | ** server mechanism). | |
b3cbe40f EA |
45 | ** |
46 | ** Usage: | |
7338e3d4 | 47 | ** /usr/lib/sendmail [flags] addr ... |
b3cbe40f | 48 | ** |
7338e3d4 | 49 | ** See the associated documentation for details. |
b3cbe40f | 50 | ** |
b3cbe40f | 51 | ** Author: |
7338e3d4 EA |
52 | ** Eric Allman, UCB/INGRES (until 10/81) |
53 | ** Britton-Lee, Inc., purveyors of fine | |
54 | ** database computers (from 11/81) | |
55 | ** The support of the INGRES Project and Britton-Lee is | |
56 | ** gratefully acknowledged. Britton-Lee in | |
57 | ** particular had absolutely nothing to gain from | |
58 | ** my involvement in this project. | |
b3cbe40f EA |
59 | */ |
60 | ||
61 | ||
62 | ||
63 | ||
64 | ||
83f674d8 | 65 | int NextMailer; /* "free" index into Mailer struct */ |
912acb74 | 66 | char *FullName; /* sender's full name */ |
be2fcca9 | 67 | ENVELOPE BlankEnvelope; /* a "blank" envelope */ |
2654b031 | 68 | ENVELOPE MainEnvelope; /* the envelope around the basic letter */ |
2e3062fe EA |
69 | ADDRESS NullAddress = /* a null address */ |
70 | { "", "", "" }; | |
71 | ||
72 | /* | |
73 | ** Pointers for setproctitle. | |
74 | ** This allows "ps" listings to give more useful information. | |
75 | ** These must be kept out of BSS for frozen configuration files | |
76 | ** to work. | |
77 | */ | |
78 | ||
79 | # ifdef SETPROCTITLE | |
80 | char **Argv = NULL; /* pointer to argument vector */ | |
81 | char *LastArgv = NULL; /* end of argv */ | |
82 | # endif SETPROCTITLE | |
b3cbe40f | 83 | |
4aebfe5d EA |
84 | #ifdef DAEMON |
85 | #ifndef SMTP | |
86 | ERROR %%%% Cannot have daemon mode without SMTP %%%% ERROR | |
87 | #endif SMTP | |
88 | #endif DAEMON | |
89 | ||
b3cbe40f EA |
90 | |
91 | ||
92 | ||
93 | ||
94 | ||
e36705df | 95 | main(argc, argv, envp) |
b3cbe40f EA |
96 | int argc; |
97 | char **argv; | |
e36705df | 98 | char **envp; |
b3cbe40f EA |
99 | { |
100 | register char *p; | |
acae5a9d | 101 | char **av; |
17df0fcb | 102 | char *locname; |
b3cbe40f | 103 | extern int finis(); |
b3cbe40f | 104 | extern char Version[]; |
b3cbe40f | 105 | char *from; |
b3cbe40f | 106 | typedef int (*fnptr)(); |
be2fcca9 | 107 | STAB *st; |
9e3c0a28 | 108 | register int i; |
4388720d | 109 | bool readconfig = TRUE; |
aba51985 | 110 | bool queuemode = FALSE; /* process queue requests */ |
43e0af62 | 111 | bool nothaw; |
be2fcca9 | 112 | static bool reenter = FALSE; |
57c97d4a | 113 | char jbuf[30]; /* holds MyHostName */ |
f6a0cc15 | 114 | extern bool safefile(); |
ed45aae1 | 115 | extern time_t convtime(); |
dd1fe05b | 116 | extern putheader(), putbody(); |
be2fcca9 | 117 | extern ENVELOPE *newenvelope(); |
6e2f38be | 118 | extern intsig(); |
1dbda134 | 119 | extern char **myhostname(); |
22e6d6b8 | 120 | extern char *arpadate(); |
e36705df | 121 | extern char **environ; |
b72377c6 | 122 | |
22659072 EA |
123 | /* |
124 | ** Check to see if we reentered. | |
125 | ** This would normally happen if e_putheader or e_putbody | |
126 | ** were NULL when invoked. | |
127 | */ | |
128 | ||
b72377c6 EA |
129 | if (reenter) |
130 | { | |
131 | syserr("main: reentered!"); | |
132 | abort(); | |
133 | } | |
134 | reenter = TRUE; | |
abae7b2d | 135 | extern ADDRESS *recipient(); |
17df0fcb | 136 | bool canrename; |
b3cbe40f | 137 | |
60c0b7b2 KB |
138 | /* Enforce use of local time */ |
139 | unsetenv("TZ"); | |
140 | ||
d15bd559 EA |
141 | /* |
142 | ** Be sure we have enough file descriptors. | |
59b65d0f | 143 | ** But also be sure that 0, 1, & 2 are open. |
d15bd559 EA |
144 | */ |
145 | ||
59b65d0f EA |
146 | i = open("/dev/null", 2); |
147 | while (i >= 0 && i < 2) | |
148 | i = dup(i); | |
560a80d9 | 149 | for (i = 3; i < 50; i++) |
d15bd559 EA |
150 | (void) close(i); |
151 | errno = 0; | |
152 | ||
8ff78b51 EA |
153 | /* |
154 | ** Set default values for variables. | |
155 | ** These cannot be in initialized data space. | |
156 | */ | |
157 | ||
158 | setdefaults(); | |
159 | ||
bb09c502 EA |
160 | /* set up the blank envelope */ |
161 | BlankEnvelope.e_puthdr = putheader; | |
162 | BlankEnvelope.e_putbody = putbody; | |
163 | BlankEnvelope.e_xfp = NULL; | |
2e3062fe | 164 | STRUCTCOPY(NullAddress, BlankEnvelope.e_from); |
bd575ea9 EA |
165 | STRUCTCOPY(BlankEnvelope, MainEnvelope); |
166 | CurEnv = &MainEnvelope; | |
bb09c502 | 167 | |
22659072 EA |
168 | /* |
169 | ** Do a quick prescan of the argument list. | |
170 | ** We do this to find out if we can potentially thaw the | |
171 | ** configuration file. If not, we do the thaw now so that | |
172 | ** the argument processing applies to this run rather than | |
173 | ** to the run that froze the configuration. | |
174 | */ | |
175 | ||
d6b27179 | 176 | argv[argc] = NULL; |
22659072 | 177 | av = argv; |
43e0af62 | 178 | nothaw = FALSE; |
560a80d9 | 179 | while ((p = *++av) != NULL) |
22659072 | 180 | { |
560a80d9 EA |
181 | if (strncmp(p, "-C", 2) == 0) |
182 | { | |
183 | ConfFile = &p[2]; | |
184 | if (ConfFile[0] == '\0') | |
185 | ConfFile = "sendmail.cf"; | |
0e306e7f EA |
186 | (void) setgid(getrgid()); |
187 | (void) setuid(getruid()); | |
43e0af62 | 188 | nothaw = TRUE; |
560a80d9 EA |
189 | } |
190 | else if (strncmp(p, "-bz", 3) == 0) | |
43e0af62 EA |
191 | nothaw = TRUE; |
192 | # ifdef DEBUG | |
193 | else if (strncmp(p, "-d", 2) == 0) | |
194 | { | |
195 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); | |
196 | tTflag(&p[2]); | |
197 | setbuf(stdout, (char *) NULL); | |
198 | printf("Version %s\n", Version); | |
199 | } | |
200 | # endif DEBUG | |
22659072 | 201 | } |
43e0af62 | 202 | if (!nothaw) |
22659072 EA |
203 | readconfig = !thaw(FreezeFile); |
204 | ||
e36705df | 205 | /* reset the environment after the thaw */ |
42bbf376 EA |
206 | for (i = 0; i < MAXUSERENVIRON && envp[i] != NULL; i++) |
207 | UserEnviron[i] = newstr(envp[i]); | |
208 | UserEnviron[i] = NULL; | |
209 | environ = UserEnviron; | |
210 | ||
211 | # ifdef SETPROCTITLE | |
212 | /* | |
213 | ** Save start and extent of argv for setproctitle. | |
214 | */ | |
215 | ||
216 | Argv = argv; | |
577bce94 EA |
217 | if (i > 0) |
218 | LastArgv = envp[i - 1] + strlen(envp[i - 1]); | |
219 | else | |
220 | LastArgv = argv[argc - 1] + strlen(argv[argc - 1]); | |
42bbf376 | 221 | # endif SETPROCTITLE |
e36705df | 222 | |
22659072 EA |
223 | /* |
224 | ** Now do basic initialization | |
225 | */ | |
226 | ||
cbdb7357 EA |
227 | InChannel = stdin; |
228 | OutChannel = stdout; | |
b3cbe40f | 229 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) |
6e2f38be | 230 | (void) signal(SIGINT, intsig); |
eb211e2c | 231 | if (signal(SIGHUP, SIG_IGN) != SIG_IGN) |
6e2f38be EA |
232 | (void) signal(SIGHUP, intsig); |
233 | (void) signal(SIGTERM, intsig); | |
ed7382d3 | 234 | (void) signal(SIGPIPE, SIG_IGN); |
a0554f81 | 235 | OldUmask = umask(0); |
75f95954 | 236 | OpMode = MD_DELIVER; |
e673aad7 | 237 | MotherPid = getpid(); |
561c7c50 EA |
238 | # ifndef V6 |
239 | FullName = getenv("NAME"); | |
240 | # endif V6 | |
dd1fe05b | 241 | |
b3cbe40f | 242 | # ifdef LOG |
b3cbe40f | 243 | # endif LOG |
b3cbe40f EA |
244 | errno = 0; |
245 | from = NULL; | |
378e8da7 | 246 | |
4388720d | 247 | if (readconfig) |
1dbda134 | 248 | { |
4388720d EA |
249 | /* initialize some macros, etc. */ |
250 | initmacros(); | |
251 | ||
252 | /* hostname */ | |
253 | av = myhostname(jbuf, sizeof jbuf); | |
254 | if (jbuf[0] != '\0') | |
255 | { | |
43e0af62 EA |
256 | #ifdef DEBUG |
257 | if (tTd(0, 4)) | |
258 | printf("canonical name: %s\n", jbuf); | |
259 | #endif DEBUG | |
4388720d EA |
260 | p = newstr(jbuf); |
261 | define('w', p, CurEnv); | |
262 | setclass('w', p); | |
263 | } | |
264 | while (av != NULL && *av != NULL) | |
43e0af62 EA |
265 | { |
266 | #ifdef DEBUG | |
267 | if (tTd(0, 4)) | |
268 | printf("\ta.k.a.: %s\n", *av); | |
269 | #endif DEBUG | |
4388720d | 270 | setclass('w', *av++); |
43e0af62 | 271 | } |
4388720d EA |
272 | |
273 | /* version */ | |
274 | define('v', Version, CurEnv); | |
1dbda134 | 275 | } |
378e8da7 EA |
276 | |
277 | /* current time */ | |
22e6d6b8 | 278 | define('b', arpadate((char *) NULL), CurEnv); |
378e8da7 | 279 | |
a691a4a6 | 280 | /* |
c1e24818 | 281 | ** Crack argv. |
a691a4a6 EA |
282 | */ |
283 | ||
acae5a9d | 284 | av = argv; |
26a3626c EA |
285 | p = rindex(*av, '/'); |
286 | if (p++ == NULL) | |
287 | p = *av; | |
288 | if (strcmp(p, "newaliases") == 0) | |
75f95954 | 289 | OpMode = MD_INITALIAS; |
26a3626c | 290 | else if (strcmp(p, "mailq") == 0) |
75f95954 | 291 | OpMode = MD_PRINT; |
34fe0a9b EA |
292 | else if (strcmp(p, "smtpd") == 0) |
293 | OpMode = MD_DAEMON; | |
3110074f | 294 | while ((p = *++av) != NULL && p[0] == '-') |
a691a4a6 | 295 | { |
c1e24818 | 296 | switch (p[1]) |
a691a4a6 | 297 | { |
75f95954 EA |
298 | case 'b': /* operations mode */ |
299 | switch (p[2]) | |
c1e24818 | 300 | { |
75f95954 EA |
301 | case MD_DAEMON: |
302 | # ifndef DAEMON | |
303 | syserr("Daemon mode not implemented"); | |
304 | break; | |
305 | # endif DAEMON | |
306 | case MD_SMTP: | |
307 | # ifndef SMTP | |
c1e24818 | 308 | syserr("I don't speak SMTP"); |
75f95954 | 309 | break; |
c1e24818 | 310 | # endif SMTP |
75f95954 EA |
311 | case MD_ARPAFTP: |
312 | case MD_DELIVER: | |
313 | case MD_VERIFY: | |
314 | case MD_TEST: | |
315 | case MD_INITALIAS: | |
316 | case MD_PRINT: | |
317 | case MD_FREEZE: | |
318 | OpMode = p[2]; | |
319 | break; | |
320 | ||
321 | default: | |
322 | syserr("Invalid operation mode %c", p[2]); | |
323 | break; | |
c1e24818 EA |
324 | } |
325 | break; | |
326 | ||
560a80d9 | 327 | case 'C': /* select configuration file (already done) */ |
c1e24818 | 328 | break; |
a691a4a6 | 329 | |
c1e24818 | 330 | # ifdef DEBUG |
43e0af62 | 331 | case 'd': /* debugging -- redo in case frozen */ |
c1e24818 EA |
332 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); |
333 | tTflag(&p[2]); | |
334 | setbuf(stdout, (char *) NULL); | |
c1e24818 EA |
335 | break; |
336 | # endif DEBUG | |
b3cbe40f | 337 | |
b3cbe40f | 338 | case 'f': /* from address */ |
c1e24818 | 339 | case 'r': /* obsolete -f flag */ |
b3cbe40f | 340 | p += 2; |
3110074f | 341 | if (*p == '\0' && ((p = *++av) == NULL || *p == '-')) |
b3cbe40f | 342 | { |
acae5a9d | 343 | p = *++av; |
3110074f | 344 | if (p == NULL || *p == '-') |
b3cbe40f EA |
345 | { |
346 | syserr("No \"from\" person"); | |
acae5a9d | 347 | av--; |
b3cbe40f EA |
348 | break; |
349 | } | |
350 | } | |
22659072 | 351 | if (from != NULL) |
b3cbe40f EA |
352 | { |
353 | syserr("More than one \"from\" person"); | |
354 | break; | |
355 | } | |
2e3062fe | 356 | from = newstr(p); |
b3cbe40f EA |
357 | break; |
358 | ||
6da7b890 | 359 | case 'F': /* set full name */ |
74c5fe7c | 360 | p += 2; |
3110074f | 361 | if (*p == '\0' && ((p = *++av) == NULL || *p == '-')) |
74c5fe7c | 362 | { |
3110074f EA |
363 | syserr("Bad -F flag"); |
364 | av--; | |
365 | break; | |
74c5fe7c | 366 | } |
2e3062fe | 367 | FullName = newstr(p); |
6da7b890 EA |
368 | break; |
369 | ||
b3cbe40f EA |
370 | case 'h': /* hop count */ |
371 | p += 2; | |
3110074f | 372 | if (*p == '\0' && ((p = *++av) == NULL || !isdigit(*p))) |
b3cbe40f | 373 | { |
3110074f EA |
374 | syserr("Bad hop count (%s)", p); |
375 | av--; | |
376 | break; | |
b3cbe40f | 377 | } |
7338e3d4 | 378 | CurEnv->e_hopcount = atoi(p); |
b3cbe40f | 379 | break; |
b3cbe40f | 380 | |
c1e24818 EA |
381 | case 'n': /* don't alias */ |
382 | NoAlias = TRUE; | |
d59b067a EA |
383 | break; |
384 | ||
c1e24818 EA |
385 | case 'o': /* set option */ |
386 | setoption(p[2], &p[3], FALSE, TRUE); | |
14a39063 | 387 | break; |
cbdb7357 | 388 | |
ed45aae1 | 389 | case 'q': /* run queue files at intervals */ |
884a20cb | 390 | # ifdef QUEUE |
aba51985 | 391 | queuemode = TRUE; |
25b9d645 | 392 | QueueIntvl = convtime(&p[2]); |
884a20cb EA |
393 | # else QUEUE |
394 | syserr("I don't know about queues"); | |
395 | # endif QUEUE | |
ed45aae1 EA |
396 | break; |
397 | ||
c1e24818 EA |
398 | case 't': /* read recipients from message */ |
399 | GrabTo = TRUE; | |
400 | break; | |
401 | ||
402 | /* compatibility flags */ | |
c1e24818 EA |
403 | case 'c': /* connect to non-local mailers */ |
404 | case 'e': /* error message disposition */ | |
405 | case 'i': /* don't let dot stop me */ | |
406 | case 'm': /* send to me too */ | |
407 | case 'T': /* set timeout interval */ | |
408 | case 'v': /* give blow-by-blow description */ | |
409 | setoption(p[1], &p[2], FALSE, TRUE); | |
35cc3fad EA |
410 | break; |
411 | ||
c1e24818 EA |
412 | case 's': /* save From lines in headers */ |
413 | setoption('f', &p[2], FALSE, TRUE); | |
b3cbe40f | 414 | break; |
26a3626c EA |
415 | |
416 | # ifdef DBM | |
417 | case 'I': /* initialize alias DBM file */ | |
75f95954 | 418 | OpMode = MD_INITALIAS; |
26a3626c EA |
419 | break; |
420 | # endif DBM | |
b3cbe40f EA |
421 | } |
422 | } | |
423 | ||
9e3c0a28 | 424 | /* |
2cce0c26 EA |
425 | ** Do basic initialization. |
426 | ** Read system control file. | |
179c1218 | 427 | ** Extract special fields for local use. |
9e3c0a28 EA |
428 | */ |
429 | ||
46f6ec52 EA |
430 | if (OpMode == MD_FREEZE || readconfig) |
431 | readcf(ConfFile); | |
22659072 | 432 | |
75f95954 | 433 | switch (OpMode) |
acae5a9d | 434 | { |
26a3626c | 435 | case MD_FREEZE: |
a9621daf | 436 | /* this is critical to avoid forgeries of the frozen config */ |
0e306e7f EA |
437 | (void) setgid(getgid()); |
438 | (void) setuid(getuid()); | |
a9621daf EA |
439 | |
440 | /* freeze the configuration */ | |
8fe4fb9b | 441 | freeze(FreezeFile); |
acae5a9d | 442 | exit(EX_OK); |
26a3626c EA |
443 | |
444 | case MD_INITALIAS: | |
445 | Verbose = TRUE; | |
446 | break; | |
acae5a9d | 447 | } |
179c1218 | 448 | |
6130649c EA |
449 | /* do heuristic mode adjustment */ |
450 | if (Verbose) | |
75f95954 EA |
451 | { |
452 | /* turn off noconnect option */ | |
453 | setoption('c', "F", TRUE, FALSE); | |
454 | ||
455 | /* turn on interactive delivery */ | |
456 | setoption('d', "", TRUE, FALSE); | |
457 | } | |
6130649c | 458 | |
179c1218 | 459 | /* our name for SMTP codes */ |
a73ae8ac | 460 | expand("\001j", jbuf, &jbuf[sizeof jbuf - 1], CurEnv); |
57c97d4a | 461 | MyHostName = jbuf; |
d6a28dd8 | 462 | |
179c1218 EA |
463 | /* the indices of local and program mailers */ |
464 | st = stab("local", ST_MAILER, ST_FIND); | |
465 | if (st == NULL) | |
466 | syserr("No local mailer defined"); | |
467 | else | |
468 | LocalMailer = st->s_mailer; | |
469 | st = stab("prog", ST_MAILER, ST_FIND); | |
470 | if (st == NULL) | |
471 | syserr("No prog mailer defined"); | |
472 | else | |
473 | ProgMailer = st->s_mailer; | |
474 | ||
6bbaf971 EA |
475 | /* operate in queue directory */ |
476 | if (chdir(QueueDir) < 0) | |
477 | { | |
478 | syserr("cannot chdir(%s)", QueueDir); | |
479 | exit(EX_SOFTWARE); | |
480 | } | |
481 | ||
64912e7e | 482 | /* |
55f0da62 | 483 | ** Do operation-mode-dependent initialization. |
64912e7e EA |
484 | */ |
485 | ||
55f0da62 | 486 | switch (OpMode) |
64912e7e | 487 | { |
55f0da62 EA |
488 | case MD_PRINT: |
489 | /* print the queue */ | |
74f37936 | 490 | #ifdef QUEUE |
64912e7e EA |
491 | dropenvelope(CurEnv); |
492 | printqueue(); | |
493 | exit(EX_OK); | |
74f37936 EA |
494 | #else QUEUE |
495 | usrerr("No queue to print"); | |
496 | finis(); | |
497 | #endif QUEUE | |
8acb5142 | 498 | |
55f0da62 EA |
499 | case MD_INITALIAS: |
500 | /* initialize alias database */ | |
501 | initaliases(AliasFile, TRUE); | |
f4dbf345 | 502 | exit(EX_OK); |
cdb17311 | 503 | |
55f0da62 EA |
504 | case MD_DAEMON: |
505 | /* don't open alias database -- done in srvrsmtp */ | |
506 | break; | |
507 | ||
508 | default: | |
509 | /* open the alias database */ | |
510 | initaliases(AliasFile, FALSE); | |
511 | break; | |
512 | } | |
513 | ||
9c6d4c70 | 514 | # ifdef DEBUG |
9678c96d | 515 | if (tTd(0, 15)) |
9c6d4c70 | 516 | { |
f6a0cc15 | 517 | /* print configuration table (or at least part of it) */ |
9c6d4c70 EA |
518 | printrules(); |
519 | for (i = 0; i < MAXMAILERS; i++) | |
520 | { | |
521 | register struct mailer *m = Mailer[i]; | |
1dbda134 | 522 | int j; |
9c6d4c70 EA |
523 | |
524 | if (m == NULL) | |
525 | continue; | |
97ad25b6 EA |
526 | printf("mailer %d (%s): P=%s S=%d R=%d M=%ld F=", i, m->m_name, |
527 | m->m_mailer, m->m_s_rwset, m->m_r_rwset, | |
528 | m->m_maxsize); | |
1dbda134 EA |
529 | for (j = '\0'; j <= '\177'; j++) |
530 | if (bitnset(j, m->m_flags)) | |
0e306e7f | 531 | (void) putchar(j); |
1dbda134 | 532 | printf(" E="); |
b3ef02a2 EA |
533 | xputs(m->m_eol); |
534 | printf("\n"); | |
9c6d4c70 EA |
535 | } |
536 | } | |
537 | # endif DEBUG | |
538 | ||
be2fcca9 EA |
539 | /* |
540 | ** Switch to the main envelope. | |
541 | */ | |
542 | ||
543 | CurEnv = newenvelope(&MainEnvelope); | |
e6f08ab1 | 544 | MainEnvelope.e_flags = BlankEnvelope.e_flags; |
be2fcca9 | 545 | |
cf69a203 EA |
546 | /* |
547 | ** If test mode, read addresses from stdin and process. | |
548 | */ | |
549 | ||
75f95954 | 550 | if (OpMode == MD_TEST) |
cf69a203 EA |
551 | { |
552 | char buf[MAXLINE]; | |
553 | ||
50435450 | 554 | printf("ADDRESS TEST MODE\nEnter <ruleset> <address>\n"); |
cf69a203 EA |
555 | for (;;) |
556 | { | |
557 | register char **pvp; | |
50435450 | 558 | char *q; |
50435450 | 559 | extern char *DelimChar; |
cf69a203 EA |
560 | |
561 | printf("> "); | |
0e306e7f | 562 | (void) fflush(stdout); |
cf69a203 EA |
563 | if (fgets(buf, sizeof buf, stdin) == NULL) |
564 | finis(); | |
ecfd2c8e | 565 | for (p = buf; isspace(*p); *p++) |
cf69a203 | 566 | continue; |
ecfd2c8e EA |
567 | q = p; |
568 | while (*p != '\0' && !isspace(*p)) | |
569 | p++; | |
cf69a203 EA |
570 | if (*p == '\0') |
571 | continue; | |
50435450 EA |
572 | *p = '\0'; |
573 | do | |
ecfd2c8e | 574 | { |
217a0102 EA |
575 | extern char **prescan(); |
576 | char pvpbuf[PSBUFSIZE]; | |
577 | ||
578 | pvp = prescan(++p, ',', pvpbuf); | |
50435450 | 579 | if (pvp == NULL) |
ecfd2c8e | 580 | continue; |
50435450 EA |
581 | rewrite(pvp, 3); |
582 | p = q; | |
583 | while (*p != '\0') | |
584 | { | |
585 | rewrite(pvp, atoi(p)); | |
586 | while (*p != '\0' && *p++ != ',') | |
587 | continue; | |
588 | } | |
589 | } while (*(p = DelimChar) != '\0'); | |
cf69a203 EA |
590 | } |
591 | } | |
592 | ||
e3cd595c EA |
593 | # ifdef QUEUE |
594 | /* | |
595 | ** If collecting stuff from the queue, go start doing that. | |
596 | */ | |
597 | ||
7b21425b | 598 | if (queuemode && OpMode != MD_DAEMON && QueueIntvl == 0) |
e3cd595c EA |
599 | { |
600 | runqueue(FALSE); | |
601 | finis(); | |
602 | } | |
603 | # endif QUEUE | |
604 | ||
f6a0cc15 EA |
605 | /* |
606 | ** If a daemon, wait for a request. | |
607 | ** getrequests will always return in a child. | |
25b9d645 | 608 | ** If we should also be processing the queue, start |
19147b2d EA |
609 | ** doing it in background. |
610 | ** We check for any errors that might have happened | |
611 | ** during startup. | |
f6a0cc15 EA |
612 | */ |
613 | ||
75f95954 | 614 | if (OpMode == MD_DAEMON || QueueIntvl != 0) |
25b9d645 | 615 | { |
9678c96d | 616 | if (!tTd(0, 1)) |
58b27aa4 | 617 | { |
fcdf8200 | 618 | /* put us in background */ |
58b27aa4 EA |
619 | i = fork(); |
620 | if (i < 0) | |
621 | syserr("daemon: cannot fork"); | |
622 | if (i != 0) | |
623 | exit(0); | |
fcdf8200 EA |
624 | |
625 | /* get our pid right */ | |
d9162460 | 626 | MotherPid = getpid(); |
fcdf8200 EA |
627 | |
628 | /* disconnect from our controlling tty */ | |
d188728a | 629 | disconnect(TRUE); |
58b27aa4 | 630 | } |
7338e3d4 | 631 | |
25b9d645 EA |
632 | # ifdef QUEUE |
633 | if (queuemode) | |
f309127e | 634 | { |
25b9d645 | 635 | runqueue(TRUE); |
75f95954 | 636 | if (OpMode != MD_DAEMON) |
f309127e EA |
637 | for (;;) |
638 | pause(); | |
639 | } | |
25b9d645 | 640 | # endif QUEUE |
7338e3d4 EA |
641 | dropenvelope(CurEnv); |
642 | ||
643 | #ifdef DAEMON | |
f6a0cc15 | 644 | getrequests(); |
2a16bae3 EA |
645 | |
646 | /* at this point we are in a child: reset state */ | |
75f95954 | 647 | OpMode = MD_SMTP; |
7338e3d4 | 648 | (void) newenvelope(CurEnv); |
912acb74 | 649 | openxscript(CurEnv); |
14a39063 | 650 | #endif DAEMON |
7338e3d4 | 651 | } |
88039044 EA |
652 | |
653 | # ifdef SMTP | |
654 | /* | |
655 | ** If running SMTP protocol, start collecting and executing | |
656 | ** commands. This will never return. | |
657 | */ | |
658 | ||
75f95954 | 659 | if (OpMode == MD_SMTP) |
88039044 EA |
660 | smtp(); |
661 | # endif SMTP | |
662 | ||
f6a0cc15 | 663 | /* |
e6f08ab1 | 664 | ** Do basic system initialization and set the sender |
f6a0cc15 EA |
665 | */ |
666 | ||
e6f08ab1 | 667 | initsys(); |
cbdb7357 | 668 | setsender(from); |
a9e0e597 | 669 | |
3110074f | 670 | if (OpMode != MD_ARPAFTP && *av == NULL && !GrabTo) |
e863b1fa | 671 | { |
2e3062fe EA |
672 | usrerr("Recipient names must be specified"); |
673 | ||
674 | /* collect body for UUCP return */ | |
675 | if (OpMode != MD_VERIFY) | |
676 | collect(FALSE); | |
e863b1fa EA |
677 | finis(); |
678 | } | |
75f95954 EA |
679 | if (OpMode == MD_VERIFY) |
680 | SendMode = SM_VERIFY; | |
b3cbe40f | 681 | |
b3cbe40f | 682 | /* |
d6b27179 | 683 | ** Scan argv and deliver the message to everyone. |
b3cbe40f EA |
684 | */ |
685 | ||
acae5a9d | 686 | sendtoargv(av); |
b3cbe40f | 687 | |
72e9b3cc | 688 | /* if we have had errors sofar, arrange a meaningful exit stat */ |
d916f0ca | 689 | if (Errors > 0 && ExitStat == EX_OK) |
a4b004a6 | 690 | ExitStat = EX_USAGE; |
a4b004a6 | 691 | |
dc39c568 EA |
692 | /* |
693 | ** Read the input mail. | |
694 | */ | |
695 | ||
2654b031 | 696 | CurEnv->e_to = NULL; |
75f95954 | 697 | if (OpMode != MD_VERIFY || GrabTo) |
49086753 | 698 | collect(FALSE); |
d829793b | 699 | errno = 0; |
35cc3fad | 700 | |
4e1f4d4b | 701 | /* collect statistics */ |
7338e3d4 EA |
702 | if (OpMode != MD_VERIFY) |
703 | markstats(CurEnv, (ADDRESS *) NULL); | |
b3cbe40f | 704 | |
d6b27179 | 705 | # ifdef DEBUG |
9678c96d | 706 | if (tTd(1, 1)) |
2654b031 | 707 | printf("From person = \"%s\"\n", CurEnv->e_from.q_paddr); |
d6b27179 EA |
708 | # endif DEBUG |
709 | ||
b3cbe40f EA |
710 | /* |
711 | ** Actually send everything. | |
d6b27179 | 712 | ** If verifying, just ack. |
b3cbe40f EA |
713 | */ |
714 | ||
7338e3d4 EA |
715 | CurEnv->e_from.q_flags |= QDONTSEND; |
716 | CurEnv->e_to = NULL; | |
f7e74083 | 717 | sendall(CurEnv, SM_DEFAULT); |
b3cbe40f EA |
718 | |
719 | /* | |
720 | ** All done. | |
721 | */ | |
722 | ||
723 | finis(); | |
724 | } | |
725 | \f/* | |
726 | ** FINIS -- Clean up and exit. | |
727 | ** | |
b3cbe40f EA |
728 | ** Parameters: |
729 | ** none | |
730 | ** | |
731 | ** Returns: | |
732 | ** never | |
733 | ** | |
734 | ** Side Effects: | |
96faada8 | 735 | ** exits sendmail |
b3cbe40f EA |
736 | */ |
737 | ||
738 | finis() | |
739 | { | |
aba51985 | 740 | # ifdef DEBUG |
9678c96d | 741 | if (tTd(2, 1)) |
e6f08ab1 | 742 | printf("\n====finis: stat %d e_flags %o\n", ExitStat, CurEnv->e_flags); |
aba51985 EA |
743 | # endif DEBUG |
744 | ||
7338e3d4 | 745 | /* clean up temp files */ |
912acb74 | 746 | CurEnv->e_to = NULL; |
e6f08ab1 | 747 | dropenvelope(CurEnv); |
b3cbe40f | 748 | |
7338e3d4 EA |
749 | /* post statistics */ |
750 | poststats(StatFile); | |
68f0b54c | 751 | |
7338e3d4 | 752 | /* and exit */ |
36a4e219 EA |
753 | # ifdef LOG |
754 | if (LogLevel > 11) | |
755 | syslog(LOG_DEBUG, "finis, pid=%d", getpid()); | |
756 | # endif LOG | |
c8ec8736 EA |
757 | if (ExitStat == EX_TEMPFAIL) |
758 | ExitStat = EX_OK; | |
b3cbe40f EA |
759 | exit(ExitStat); |
760 | } | |
761 | \f/* | |
6e2f38be EA |
762 | ** INTSIG -- clean up on interrupt |
763 | ** | |
7338e3d4 EA |
764 | ** This just arranges to exit. It pessimises in that it |
765 | ** may resend a message. | |
6e2f38be EA |
766 | ** |
767 | ** Parameters: | |
768 | ** none. | |
769 | ** | |
770 | ** Returns: | |
771 | ** none. | |
772 | ** | |
773 | ** Side Effects: | |
7338e3d4 | 774 | ** Unlocks the current job. |
6e2f38be EA |
775 | */ |
776 | ||
777 | intsig() | |
778 | { | |
7338e3d4 EA |
779 | FileName = NULL; |
780 | unlockqueue(CurEnv); | |
781 | exit(EX_OK); | |
6e2f38be EA |
782 | } |
783 | \f/* | |
721fad23 EA |
784 | ** INITMACROS -- initialize the macro system |
785 | ** | |
786 | ** This just involves defining some macros that are actually | |
787 | ** used internally as metasymbols to be themselves. | |
788 | ** | |
789 | ** Parameters: | |
790 | ** none. | |
791 | ** | |
792 | ** Returns: | |
793 | ** none. | |
794 | ** | |
795 | ** Side Effects: | |
796 | ** initializes several macros to be themselves. | |
797 | */ | |
798 | ||
9dbc8d99 | 799 | struct metamac |
721fad23 | 800 | { |
9dbc8d99 EA |
801 | char metaname; |
802 | char metaval; | |
803 | }; | |
721fad23 | 804 | |
9dbc8d99 EA |
805 | struct metamac MetaMacros[] = |
806 | { | |
eca244ca | 807 | /* LHS pattern matching characters */ |
2018e82d | 808 | '*', MATCHZANY, '+', MATCHANY, '-', MATCHONE, '=', MATCHCLASS, |
9f39d7cd | 809 | '~', MATCHNCLASS, |
721fad23 EA |
810 | |
811 | /* these are RHS metasymbols */ | |
2018e82d | 812 | '#', CANONNET, '@', CANONHOST, ':', CANONUSER, '>', CALLSUBR, |
41173b8f | 813 | '{', MATCHLOOKUP, '}', MATCHELOOKUP, |
721fad23 | 814 | |
eca244ca | 815 | /* the conditional operations */ |
2018e82d | 816 | '?', CONDIF, '|', CONDELSE, '.', CONDFI, |
9dbc8d99 | 817 | |
eca244ca | 818 | /* and finally the hostname lookup characters */ |
217a0102 | 819 | '[', HOSTBEGIN, ']', HOSTEND, |
eca244ca | 820 | |
9dbc8d99 | 821 | '\0' |
721fad23 EA |
822 | }; |
823 | ||
824 | initmacros() | |
825 | { | |
9dbc8d99 EA |
826 | register struct metamac *m; |
827 | char buf[5]; | |
828 | register int c; | |
721fad23 | 829 | |
9dbc8d99 EA |
830 | for (m = MetaMacros; m->metaname != '\0'; m++) |
831 | { | |
832 | buf[0] = m->metaval; | |
833 | buf[1] = '\0'; | |
7338e3d4 | 834 | define(m->metaname, newstr(buf), CurEnv); |
9dbc8d99 EA |
835 | } |
836 | buf[0] = MATCHREPL; | |
837 | buf[2] = '\0'; | |
838 | for (c = '0'; c <= '9'; c++) | |
839 | { | |
840 | buf[1] = c; | |
7338e3d4 | 841 | define(c, newstr(buf), CurEnv); |
9dbc8d99 | 842 | } |
721fad23 | 843 | } |
dd1fe05b | 844 | \f/* |
acae5a9d EA |
845 | ** FREEZE -- freeze BSS & allocated memory |
846 | ** | |
847 | ** This will be used to efficiently load the configuration file. | |
848 | ** | |
849 | ** Parameters: | |
8fe4fb9b | 850 | ** freezefile -- the name of the file to freeze to. |
acae5a9d EA |
851 | ** |
852 | ** Returns: | |
853 | ** none. | |
854 | ** | |
855 | ** Side Effects: | |
8fe4fb9b | 856 | ** Writes BSS and malloc'ed memory to freezefile |
acae5a9d EA |
857 | */ |
858 | ||
7338e3d4 | 859 | union frz |
acae5a9d | 860 | { |
7338e3d4 EA |
861 | char frzpad[BUFSIZ]; /* insure we are on a BUFSIZ boundary */ |
862 | struct | |
863 | { | |
864 | time_t frzstamp; /* timestamp on this freeze */ | |
865 | char *frzbrk; /* the current break */ | |
2e3062fe EA |
866 | char *frzedata; /* address of edata */ |
867 | char *frzend; /* address of end */ | |
7338e3d4 EA |
868 | char frzver[252]; /* sendmail version */ |
869 | } frzinfo; | |
acae5a9d EA |
870 | }; |
871 | ||
8fe4fb9b EA |
872 | freeze(freezefile) |
873 | char *freezefile; | |
acae5a9d EA |
874 | { |
875 | int f; | |
7338e3d4 | 876 | union frz fhdr; |
2e3062fe | 877 | extern char edata, end; |
acae5a9d | 878 | extern char *sbrk(); |
912acb74 | 879 | extern char Version[]; |
acae5a9d | 880 | |
8fe4fb9b | 881 | if (freezefile == NULL) |
acae5a9d EA |
882 | return; |
883 | ||
884 | /* try to open the freeze file */ | |
8fe4fb9b | 885 | f = creat(freezefile, FileMode); |
acae5a9d EA |
886 | if (f < 0) |
887 | { | |
888 | syserr("Cannot freeze"); | |
889 | errno = 0; | |
890 | return; | |
891 | } | |
892 | ||
893 | /* build the freeze header */ | |
7338e3d4 EA |
894 | fhdr.frzinfo.frzstamp = curtime(); |
895 | fhdr.frzinfo.frzbrk = sbrk(0); | |
2e3062fe EA |
896 | fhdr.frzinfo.frzedata = &edata; |
897 | fhdr.frzinfo.frzend = &end; | |
0e306e7f | 898 | (void) strcpy(fhdr.frzinfo.frzver, Version); |
acae5a9d EA |
899 | |
900 | /* write out the freeze header */ | |
611b763d | 901 | if (write(f, (char *) &fhdr, sizeof fhdr) != sizeof fhdr || |
34fe0a9b EA |
902 | write(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
903 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
7338e3d4 | 904 | { |
acae5a9d | 905 | syserr("Cannot freeze"); |
7338e3d4 | 906 | } |
acae5a9d EA |
907 | |
908 | /* fine, clean up */ | |
909 | (void) close(f); | |
910 | } | |
911 | \f/* | |
912 | ** THAW -- read in the frozen configuration file. | |
913 | ** | |
914 | ** Parameters: | |
8fe4fb9b | 915 | ** freezefile -- the name of the file to thaw from. |
acae5a9d EA |
916 | ** |
917 | ** Returns: | |
918 | ** TRUE if it successfully read the freeze file. | |
919 | ** FALSE otherwise. | |
920 | ** | |
921 | ** Side Effects: | |
8fe4fb9b | 922 | ** reads freezefile in to BSS area. |
acae5a9d EA |
923 | */ |
924 | ||
8fe4fb9b EA |
925 | thaw(freezefile) |
926 | char *freezefile; | |
acae5a9d EA |
927 | { |
928 | int f; | |
7338e3d4 | 929 | union frz fhdr; |
acae5a9d | 930 | extern char edata; |
912acb74 | 931 | extern char Version[]; |
17a67c62 | 932 | extern caddr_t brk(); |
acae5a9d | 933 | |
8fe4fb9b | 934 | if (freezefile == NULL) |
acae5a9d EA |
935 | return (FALSE); |
936 | ||
937 | /* open the freeze file */ | |
8fe4fb9b | 938 | f = open(freezefile, 0); |
acae5a9d EA |
939 | if (f < 0) |
940 | { | |
941 | errno = 0; | |
942 | return (FALSE); | |
943 | } | |
944 | ||
945 | /* read in the header */ | |
611b763d | 946 | if (read(f, (char *) &fhdr, sizeof fhdr) < sizeof fhdr || |
2e3062fe EA |
947 | fhdr.frzinfo.frzedata != &edata || |
948 | fhdr.frzinfo.frzend != &end || | |
7338e3d4 | 949 | strcmp(fhdr.frzinfo.frzver, Version) != 0) |
acae5a9d EA |
950 | { |
951 | (void) close(f); | |
952 | return (FALSE); | |
953 | } | |
954 | ||
955 | /* arrange to have enough space */ | |
17a67c62 | 956 | if (brk(fhdr.frzinfo.frzbrk) == (caddr_t) -1) |
acae5a9d | 957 | { |
7338e3d4 | 958 | syserr("Cannot break to %x", fhdr.frzinfo.frzbrk); |
acae5a9d EA |
959 | (void) close(f); |
960 | return (FALSE); | |
961 | } | |
962 | ||
963 | /* now read in the freeze file */ | |
34fe0a9b EA |
964 | if (read(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
965 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
acae5a9d EA |
966 | { |
967 | /* oops! we have trashed memory..... */ | |
0e306e7f | 968 | (void) write(2, "Cannot read freeze file\n", 24); |
7338e3d4 | 969 | _exit(EX_SOFTWARE); |
acae5a9d EA |
970 | } |
971 | ||
972 | (void) close(f); | |
973 | return (TRUE); | |
974 | } | |
813d8709 EA |
975 | \f/* |
976 | ** DISCONNECT -- remove our connection with any foreground process | |
977 | ** | |
978 | ** Parameters: | |
d188728a EA |
979 | ** fulldrop -- if set, we should also drop the controlling |
980 | ** TTY if possible -- this should only be done when | |
981 | ** setting up the daemon since otherwise UUCP can | |
982 | ** leave us trying to open a dialin, and we will | |
983 | ** wait for the carrier. | |
813d8709 EA |
984 | ** |
985 | ** Returns: | |
986 | ** none | |
987 | ** | |
988 | ** Side Effects: | |
989 | ** Trys to insure that we are immune to vagaries of | |
990 | ** the controlling tty. | |
991 | */ | |
992 | ||
d188728a EA |
993 | disconnect(fulldrop) |
994 | bool fulldrop; | |
813d8709 EA |
995 | { |
996 | int fd; | |
997 | ||
e6f08ab1 EA |
998 | #ifdef DEBUG |
999 | if (tTd(52, 1)) | |
b9accadd EA |
1000 | printf("disconnect: In %d Out %d\n", fileno(InChannel), |
1001 | fileno(OutChannel)); | |
e6f08ab1 | 1002 | if (tTd(52, 5)) |
813d8709 | 1003 | { |
e6f08ab1 EA |
1004 | printf("don't\n"); |
1005 | return; | |
813d8709 | 1006 | } |
e6f08ab1 | 1007 | #endif DEBUG |
813d8709 EA |
1008 | |
1009 | /* be sure we don't get nasty signals */ | |
0e306e7f EA |
1010 | (void) signal(SIGHUP, SIG_IGN); |
1011 | (void) signal(SIGINT, SIG_IGN); | |
1012 | (void) signal(SIGQUIT, SIG_IGN); | |
813d8709 EA |
1013 | |
1014 | /* we can't communicate with our caller, so.... */ | |
7338e3d4 EA |
1015 | HoldErrs = TRUE; |
1016 | ErrorMode = EM_MAIL; | |
813d8709 EA |
1017 | Verbose = FALSE; |
1018 | ||
1019 | /* all input from /dev/null */ | |
813d8709 | 1020 | if (InChannel != stdin) |
b9accadd EA |
1021 | { |
1022 | (void) fclose(InChannel); | |
1023 | InChannel = stdin; | |
1024 | } | |
1025 | (void) freopen("/dev/null", "r", stdin); | |
813d8709 EA |
1026 | |
1027 | /* output to the transcript */ | |
b9accadd | 1028 | if (OutChannel != stdout) |
813d8709 | 1029 | { |
b9accadd EA |
1030 | (void) fclose(OutChannel); |
1031 | OutChannel = stdout; | |
813d8709 | 1032 | } |
912acb74 EA |
1033 | if (CurEnv->e_xfp == NULL) |
1034 | CurEnv->e_xfp = fopen("/dev/null", "w"); | |
b9accadd EA |
1035 | (void) fflush(stdout); |
1036 | (void) close(1); | |
1037 | (void) close(2); | |
912acb74 | 1038 | while ((fd = dup(fileno(CurEnv->e_xfp))) < 2 && fd > 0) |
b9accadd | 1039 | continue; |
813d8709 | 1040 | |
e6f08ab1 EA |
1041 | #ifdef TIOCNOTTY |
1042 | /* drop our controlling TTY completely if possible */ | |
d188728a | 1043 | if (fulldrop) |
e6f08ab1 | 1044 | { |
d188728a EA |
1045 | fd = open("/dev/tty", 2); |
1046 | if (fd >= 0) | |
1047 | { | |
17a67c62 | 1048 | (void) ioctl(fd, (int) TIOCNOTTY, (char *) 0); |
d188728a EA |
1049 | (void) close(fd); |
1050 | } | |
17a67c62 | 1051 | (void) setpgrp(0, 0); |
70faa7c8 | 1052 | errno = 0; |
e6f08ab1 EA |
1053 | } |
1054 | #endif TIOCNOTTY | |
1055 | ||
813d8709 EA |
1056 | # ifdef LOG |
1057 | if (LogLevel > 11) | |
1058 | syslog(LOG_DEBUG, "in background, pid=%d", getpid()); | |
1059 | # endif LOG | |
1060 | ||
1061 | errno = 0; | |
1062 | } |