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 | |
ca4d0c0b | 16 | static char sccsid[] = "@(#)main.c 5.54 (Berkeley) %G%"; |
bee79b64 | 17 | #endif /* not lint */ |
aeb2545d | 18 | |
137c2d1f KB |
19 | #define _DEFINE |
20 | ||
afe907a4 | 21 | #include <sys/param.h> |
5bec1980 | 22 | #include <sys/file.h> |
f2e44ded | 23 | #include <sys/stat.h> |
137c2d1f KB |
24 | #include <signal.h> |
25 | #include <sgtty.h> | |
26 | #include "sendmail.h" | |
27 | #include <arpa/nameser.h> | |
28 | #include <resolv.h> | |
b3cbe40f | 29 | |
17a67c62 | 30 | # ifdef lint |
2e3062fe | 31 | char edata, end; |
17a67c62 EA |
32 | # endif lint |
33 | ||
b3cbe40f | 34 | /* |
96faada8 | 35 | ** SENDMAIL -- Post mail to a set of destinations. |
b3cbe40f EA |
36 | ** |
37 | ** This is the basic mail router. All user mail programs should | |
96faada8 | 38 | ** call this routine to actually deliver mail. Sendmail in |
b3cbe40f EA |
39 | ** turn calls a bunch of mail servers that do the real work of |
40 | ** delivering the mail. | |
41 | ** | |
3199e4f3 EA |
42 | ** Sendmail is driven by tables read in from /usr/lib/sendmail.cf |
43 | ** (read by readcf.c). Some more static configuration info, | |
44 | ** including some code that you may want to tailor for your | |
45 | ** installation, is in conf.c. You may also want to touch | |
46 | ** daemon.c (if you have some other IPC mechanism), acct.c | |
47 | ** (to change your accounting), names.c (to adjust the name | |
48 | ** server mechanism). | |
b3cbe40f EA |
49 | ** |
50 | ** Usage: | |
7338e3d4 | 51 | ** /usr/lib/sendmail [flags] addr ... |
b3cbe40f | 52 | ** |
7338e3d4 | 53 | ** See the associated documentation for details. |
b3cbe40f | 54 | ** |
b3cbe40f | 55 | ** Author: |
7338e3d4 EA |
56 | ** Eric Allman, UCB/INGRES (until 10/81) |
57 | ** Britton-Lee, Inc., purveyors of fine | |
58 | ** database computers (from 11/81) | |
ce46a48a | 59 | ** Now back at UCB at the Mammoth project. |
7338e3d4 EA |
60 | ** The support of the INGRES Project and Britton-Lee is |
61 | ** gratefully acknowledged. Britton-Lee in | |
62 | ** particular had absolutely nothing to gain from | |
63 | ** my involvement in this project. | |
b3cbe40f EA |
64 | */ |
65 | ||
66 | ||
83f674d8 | 67 | int NextMailer; /* "free" index into Mailer struct */ |
912acb74 | 68 | char *FullName; /* sender's full name */ |
be2fcca9 | 69 | ENVELOPE BlankEnvelope; /* a "blank" envelope */ |
2654b031 | 70 | ENVELOPE MainEnvelope; /* the envelope around the basic letter */ |
2e3062fe | 71 | ADDRESS NullAddress = /* a null address */ |
599d88d0 | 72 | { "", "", NULL, "" }; |
2e3062fe EA |
73 | |
74 | /* | |
75 | ** Pointers for setproctitle. | |
76 | ** This allows "ps" listings to give more useful information. | |
77 | ** These must be kept out of BSS for frozen configuration files | |
78 | ** to work. | |
79 | */ | |
80 | ||
81 | # ifdef SETPROCTITLE | |
82 | char **Argv = NULL; /* pointer to argument vector */ | |
83 | char *LastArgv = NULL; /* end of argv */ | |
84 | # endif SETPROCTITLE | |
b3cbe40f | 85 | |
ce46a48a EA |
86 | /* |
87 | ** The file in which to log raw recipient information. | |
88 | ** This is logged before aliasing, forwarding, and so forth so we | |
89 | ** can see how our addresses are being used. For example, this | |
90 | ** would give us the names of aliases (instead of what they alias | |
91 | ** to), the pre-MX hostnames, and so forth. | |
92 | ** | |
93 | ** This is specified on the command line, not in the config file, | |
94 | ** and is therefore really only useful for logging SMTP RCPTs. | |
95 | */ | |
96 | ||
97 | char *RcptLogFile = NULL; /* file name */ | |
98 | ||
4aebfe5d EA |
99 | #ifdef DAEMON |
100 | #ifndef SMTP | |
101 | ERROR %%%% Cannot have daemon mode without SMTP %%%% ERROR | |
102 | #endif SMTP | |
103 | #endif DAEMON | |
104 | ||
2281a453 EA |
105 | #define MAXCONFIGLEVEL 3 /* highest config version level known */ |
106 | ||
e36705df | 107 | main(argc, argv, envp) |
b3cbe40f EA |
108 | int argc; |
109 | char **argv; | |
e36705df | 110 | char **envp; |
b3cbe40f EA |
111 | { |
112 | register char *p; | |
acae5a9d | 113 | char **av; |
17df0fcb | 114 | char *locname; |
b3cbe40f | 115 | extern int finis(); |
b3cbe40f | 116 | extern char Version[]; |
b3cbe40f | 117 | char *from; |
b3cbe40f | 118 | typedef int (*fnptr)(); |
be2fcca9 | 119 | STAB *st; |
9e3c0a28 | 120 | register int i; |
4388720d | 121 | bool readconfig = TRUE; |
aba51985 | 122 | bool queuemode = FALSE; /* process queue requests */ |
43e0af62 | 123 | bool nothaw; |
66391bf0 | 124 | bool safecf = TRUE; |
be2fcca9 | 125 | static bool reenter = FALSE; |
ccfed53c | 126 | char jbuf[60]; /* holds MyHostName */ |
3eb4fac4 | 127 | extern int DtableSize; |
f6a0cc15 | 128 | extern bool safefile(); |
ed45aae1 | 129 | extern time_t convtime(); |
dd1fe05b | 130 | extern putheader(), putbody(); |
be2fcca9 | 131 | extern ENVELOPE *newenvelope(); |
0df908a9 | 132 | extern void intsig(); |
1dbda134 | 133 | extern char **myhostname(); |
22e6d6b8 | 134 | extern char *arpadate(); |
e36705df | 135 | extern char **environ; |
b72377c6 | 136 | |
22659072 EA |
137 | /* |
138 | ** Check to see if we reentered. | |
139 | ** This would normally happen if e_putheader or e_putbody | |
140 | ** were NULL when invoked. | |
141 | */ | |
142 | ||
b72377c6 EA |
143 | if (reenter) |
144 | { | |
145 | syserr("main: reentered!"); | |
146 | abort(); | |
147 | } | |
148 | reenter = TRUE; | |
abae7b2d | 149 | extern ADDRESS *recipient(); |
17df0fcb | 150 | bool canrename; |
b3cbe40f | 151 | |
ca4d0c0b | 152 | #ifndef SYSTEM5 |
140717b5 EA |
153 | /* enforce use of kernel-supplied time zone information */ |
154 | unsetenv("TZ"); | |
155 | #endif | |
60c0b7b2 | 156 | |
3eb4fac4 EA |
157 | /* in 4.4BSD, the table can be huge; impose a reasonable limit */ |
158 | DtableSize = getdtablesize(); | |
159 | if (DtableSize > 256) | |
160 | DtableSize = 256; | |
161 | ||
d15bd559 EA |
162 | /* |
163 | ** Be sure we have enough file descriptors. | |
59b65d0f | 164 | ** But also be sure that 0, 1, & 2 are open. |
d15bd559 EA |
165 | */ |
166 | ||
e1098041 | 167 | i = open("/dev/null", O_RDWR); |
59b65d0f EA |
168 | while (i >= 0 && i < 2) |
169 | i = dup(i); | |
66391bf0 | 170 | |
3eb4fac4 | 171 | i = DtableSize; |
66391bf0 | 172 | while (--i > 2) |
d15bd559 EA |
173 | (void) close(i); |
174 | errno = 0; | |
175 | ||
07adc4f5 RA |
176 | #ifdef LOG_MAIL |
177 | openlog("sendmail", LOG_PID, LOG_MAIL); | |
178 | #else | |
179 | openlog("sendmail", LOG_PID); | |
180 | #endif | |
181 | ||
8ff78b51 EA |
182 | /* |
183 | ** Set default values for variables. | |
184 | ** These cannot be in initialized data space. | |
185 | */ | |
186 | ||
187 | setdefaults(); | |
188 | ||
bb09c502 EA |
189 | /* set up the blank envelope */ |
190 | BlankEnvelope.e_puthdr = putheader; | |
191 | BlankEnvelope.e_putbody = putbody; | |
192 | BlankEnvelope.e_xfp = NULL; | |
2e3062fe | 193 | STRUCTCOPY(NullAddress, BlankEnvelope.e_from); |
bd575ea9 EA |
194 | STRUCTCOPY(BlankEnvelope, MainEnvelope); |
195 | CurEnv = &MainEnvelope; | |
bb09c502 | 196 | |
22659072 EA |
197 | /* |
198 | ** Do a quick prescan of the argument list. | |
199 | ** We do this to find out if we can potentially thaw the | |
200 | ** configuration file. If not, we do the thaw now so that | |
201 | ** the argument processing applies to this run rather than | |
202 | ** to the run that froze the configuration. | |
203 | */ | |
204 | ||
d6b27179 | 205 | argv[argc] = NULL; |
22659072 | 206 | av = argv; |
43e0af62 | 207 | nothaw = FALSE; |
560a80d9 | 208 | while ((p = *++av) != NULL) |
22659072 | 209 | { |
560a80d9 EA |
210 | if (strncmp(p, "-C", 2) == 0) |
211 | { | |
212 | ConfFile = &p[2]; | |
213 | if (ConfFile[0] == '\0') | |
214 | ConfFile = "sendmail.cf"; | |
0e306e7f EA |
215 | (void) setgid(getrgid()); |
216 | (void) setuid(getruid()); | |
66391bf0 | 217 | safecf = FALSE; |
43e0af62 | 218 | nothaw = TRUE; |
560a80d9 EA |
219 | } |
220 | else if (strncmp(p, "-bz", 3) == 0) | |
43e0af62 | 221 | nothaw = TRUE; |
43e0af62 EA |
222 | else if (strncmp(p, "-d", 2) == 0) |
223 | { | |
224 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); | |
225 | tTflag(&p[2]); | |
226 | setbuf(stdout, (char *) NULL); | |
227 | printf("Version %s\n", Version); | |
228 | } | |
22659072 | 229 | } |
2bc15c4e KB |
230 | |
231 | InChannel = stdin; | |
232 | OutChannel = stdout; | |
233 | ||
43e0af62 | 234 | if (!nothaw) |
22659072 EA |
235 | readconfig = !thaw(FreezeFile); |
236 | ||
e36705df | 237 | /* reset the environment after the thaw */ |
42bbf376 EA |
238 | for (i = 0; i < MAXUSERENVIRON && envp[i] != NULL; i++) |
239 | UserEnviron[i] = newstr(envp[i]); | |
240 | UserEnviron[i] = NULL; | |
241 | environ = UserEnviron; | |
242 | ||
243 | # ifdef SETPROCTITLE | |
244 | /* | |
245 | ** Save start and extent of argv for setproctitle. | |
246 | */ | |
247 | ||
248 | Argv = argv; | |
577bce94 EA |
249 | if (i > 0) |
250 | LastArgv = envp[i - 1] + strlen(envp[i - 1]); | |
251 | else | |
252 | LastArgv = argv[argc - 1] + strlen(argv[argc - 1]); | |
42bbf376 | 253 | # endif SETPROCTITLE |
e36705df | 254 | |
b3cbe40f | 255 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) |
6e2f38be | 256 | (void) signal(SIGINT, intsig); |
eb211e2c | 257 | if (signal(SIGHUP, SIG_IGN) != SIG_IGN) |
6e2f38be EA |
258 | (void) signal(SIGHUP, intsig); |
259 | (void) signal(SIGTERM, intsig); | |
ed7382d3 | 260 | (void) signal(SIGPIPE, SIG_IGN); |
a0554f81 | 261 | OldUmask = umask(0); |
75f95954 | 262 | OpMode = MD_DELIVER; |
e673aad7 | 263 | MotherPid = getpid(); |
561c7c50 | 264 | FullName = getenv("NAME"); |
dd1fe05b | 265 | |
b3cbe40f EA |
266 | errno = 0; |
267 | from = NULL; | |
378e8da7 | 268 | |
4388720d | 269 | if (readconfig) |
1dbda134 | 270 | { |
4388720d EA |
271 | /* initialize some macros, etc. */ |
272 | initmacros(); | |
273 | ||
274 | /* hostname */ | |
275 | av = myhostname(jbuf, sizeof jbuf); | |
276 | if (jbuf[0] != '\0') | |
277 | { | |
dec0d30e EA |
278 | register char *q; |
279 | extern char *strchr(); | |
280 | ||
43e0af62 EA |
281 | if (tTd(0, 4)) |
282 | printf("canonical name: %s\n", jbuf); | |
4388720d EA |
283 | p = newstr(jbuf); |
284 | define('w', p, CurEnv); | |
dec0d30e EA |
285 | |
286 | q = strchr(jbuf, '.'); | |
287 | if (q != NULL) | |
288 | { | |
1bc035b0 | 289 | *q++ = '\0'; |
dec0d30e | 290 | p = newstr(jbuf); |
1bc035b0 | 291 | define('m', q, CurEnv); |
dec0d30e | 292 | } |
4388720d EA |
293 | setclass('w', p); |
294 | } | |
295 | while (av != NULL && *av != NULL) | |
43e0af62 | 296 | { |
43e0af62 EA |
297 | if (tTd(0, 4)) |
298 | printf("\ta.k.a.: %s\n", *av); | |
4388720d | 299 | setclass('w', *av++); |
43e0af62 | 300 | } |
4388720d EA |
301 | |
302 | /* version */ | |
303 | define('v', Version, CurEnv); | |
1dbda134 | 304 | } |
378e8da7 EA |
305 | |
306 | /* current time */ | |
22e6d6b8 | 307 | define('b', arpadate((char *) NULL), CurEnv); |
378e8da7 | 308 | |
a691a4a6 | 309 | /* |
c1e24818 | 310 | ** Crack argv. |
a691a4a6 EA |
311 | */ |
312 | ||
acae5a9d | 313 | av = argv; |
26a3626c EA |
314 | p = rindex(*av, '/'); |
315 | if (p++ == NULL) | |
316 | p = *av; | |
317 | if (strcmp(p, "newaliases") == 0) | |
75f95954 | 318 | OpMode = MD_INITALIAS; |
26a3626c | 319 | else if (strcmp(p, "mailq") == 0) |
75f95954 | 320 | OpMode = MD_PRINT; |
34fe0a9b EA |
321 | else if (strcmp(p, "smtpd") == 0) |
322 | OpMode = MD_DAEMON; | |
3110074f | 323 | while ((p = *++av) != NULL && p[0] == '-') |
a691a4a6 | 324 | { |
c1e24818 | 325 | switch (p[1]) |
a691a4a6 | 326 | { |
75f95954 EA |
327 | case 'b': /* operations mode */ |
328 | switch (p[2]) | |
c1e24818 | 329 | { |
75f95954 | 330 | case MD_DAEMON: |
908dc8db MK |
331 | # ifdef DAEMON |
332 | if (getuid() != 0) { | |
333 | usrerr("Permission denied"); | |
334 | exit (EX_USAGE); | |
335 | } | |
336 | (void) unsetenv("HOSTALIASES"); | |
337 | # else | |
2e15a2d8 MK |
338 | usrerr("Daemon mode not implemented"); |
339 | ExitStat = EX_USAGE; | |
75f95954 EA |
340 | break; |
341 | # endif DAEMON | |
342 | case MD_SMTP: | |
343 | # ifndef SMTP | |
2e15a2d8 MK |
344 | usrerr("I don't speak SMTP"); |
345 | ExitStat = EX_USAGE; | |
75f95954 | 346 | break; |
c1e24818 | 347 | # endif SMTP |
75f95954 EA |
348 | case MD_DELIVER: |
349 | case MD_VERIFY: | |
350 | case MD_TEST: | |
351 | case MD_INITALIAS: | |
352 | case MD_PRINT: | |
353 | case MD_FREEZE: | |
354 | OpMode = p[2]; | |
355 | break; | |
356 | ||
357 | default: | |
2e15a2d8 MK |
358 | usrerr("Invalid operation mode %c", p[2]); |
359 | ExitStat = EX_USAGE; | |
75f95954 | 360 | break; |
c1e24818 EA |
361 | } |
362 | break; | |
363 | ||
560a80d9 | 364 | case 'C': /* select configuration file (already done) */ |
c1e24818 | 365 | break; |
a691a4a6 | 366 | |
43e0af62 | 367 | case 'd': /* debugging -- redo in case frozen */ |
c1e24818 EA |
368 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); |
369 | tTflag(&p[2]); | |
370 | setbuf(stdout, (char *) NULL); | |
c1e24818 | 371 | break; |
b3cbe40f | 372 | |
b3cbe40f | 373 | case 'f': /* from address */ |
c1e24818 | 374 | case 'r': /* obsolete -f flag */ |
b3cbe40f | 375 | p += 2; |
3110074f | 376 | if (*p == '\0' && ((p = *++av) == NULL || *p == '-')) |
b3cbe40f | 377 | { |
acae5a9d | 378 | p = *++av; |
3110074f | 379 | if (p == NULL || *p == '-') |
b3cbe40f | 380 | { |
2e15a2d8 MK |
381 | usrerr("No \"from\" person"); |
382 | ExitStat = EX_USAGE; | |
acae5a9d | 383 | av--; |
b3cbe40f EA |
384 | break; |
385 | } | |
386 | } | |
22659072 | 387 | if (from != NULL) |
b3cbe40f | 388 | { |
2e15a2d8 MK |
389 | usrerr("More than one \"from\" person"); |
390 | ExitStat = EX_USAGE; | |
b3cbe40f EA |
391 | break; |
392 | } | |
2e3062fe | 393 | from = newstr(p); |
b3cbe40f EA |
394 | break; |
395 | ||
6da7b890 | 396 | case 'F': /* set full name */ |
74c5fe7c | 397 | p += 2; |
3110074f | 398 | if (*p == '\0' && ((p = *++av) == NULL || *p == '-')) |
74c5fe7c | 399 | { |
2e15a2d8 MK |
400 | usrerr("Bad -F flag"); |
401 | ExitStat = EX_USAGE; | |
3110074f EA |
402 | av--; |
403 | break; | |
74c5fe7c | 404 | } |
2e3062fe | 405 | FullName = newstr(p); |
6da7b890 EA |
406 | break; |
407 | ||
b3cbe40f EA |
408 | case 'h': /* hop count */ |
409 | p += 2; | |
3110074f | 410 | if (*p == '\0' && ((p = *++av) == NULL || !isdigit(*p))) |
b3cbe40f | 411 | { |
2e15a2d8 MK |
412 | usrerr("Bad hop count (%s)", p); |
413 | ExitStat = EX_USAGE; | |
3110074f EA |
414 | av--; |
415 | break; | |
b3cbe40f | 416 | } |
7338e3d4 | 417 | CurEnv->e_hopcount = atoi(p); |
b3cbe40f | 418 | break; |
b3cbe40f | 419 | |
c1e24818 EA |
420 | case 'n': /* don't alias */ |
421 | NoAlias = TRUE; | |
d59b067a EA |
422 | break; |
423 | ||
c1e24818 EA |
424 | case 'o': /* set option */ |
425 | setoption(p[2], &p[3], FALSE, TRUE); | |
14a39063 | 426 | break; |
cbdb7357 | 427 | |
ed45aae1 | 428 | case 'q': /* run queue files at intervals */ |
884a20cb | 429 | # ifdef QUEUE |
f2e44ded EA |
430 | if (getuid() != 0) |
431 | { | |
432 | struct stat stbuf; | |
433 | ||
434 | /* check to see if we own the queue directory */ | |
435 | if (stat(QueueDir, &stbuf) < 0) | |
436 | syserr("main: cannot stat %s", QueueDir); | |
437 | if (stbuf.st_uid != getuid()) | |
438 | { | |
439 | /* nope, really a botch */ | |
440 | usrerr("Permission denied"); | |
441 | exit (EX_NOPERM); | |
442 | } | |
908dc8db MK |
443 | } |
444 | (void) unsetenv("HOSTALIASES"); | |
aba51985 | 445 | queuemode = TRUE; |
25b9d645 | 446 | QueueIntvl = convtime(&p[2]); |
884a20cb | 447 | # else QUEUE |
2e15a2d8 MK |
448 | usrerr("I don't know about queues"); |
449 | ExitStat = EX_USAGE; | |
884a20cb | 450 | # endif QUEUE |
ed45aae1 EA |
451 | break; |
452 | ||
c1e24818 EA |
453 | case 't': /* read recipients from message */ |
454 | GrabTo = TRUE; | |
455 | break; | |
456 | ||
457 | /* compatibility flags */ | |
c1e24818 EA |
458 | case 'c': /* connect to non-local mailers */ |
459 | case 'e': /* error message disposition */ | |
460 | case 'i': /* don't let dot stop me */ | |
461 | case 'm': /* send to me too */ | |
462 | case 'T': /* set timeout interval */ | |
463 | case 'v': /* give blow-by-blow description */ | |
464 | setoption(p[1], &p[2], FALSE, TRUE); | |
35cc3fad EA |
465 | break; |
466 | ||
c1e24818 EA |
467 | case 's': /* save From lines in headers */ |
468 | setoption('f', &p[2], FALSE, TRUE); | |
b3cbe40f | 469 | break; |
26a3626c EA |
470 | |
471 | # ifdef DBM | |
472 | case 'I': /* initialize alias DBM file */ | |
75f95954 | 473 | OpMode = MD_INITALIAS; |
26a3626c | 474 | break; |
ce46a48a EA |
475 | # endif /* DBM */ |
476 | ||
477 | case 'R': /* log raw recipient info */ | |
478 | p += 2; | |
479 | if (*p == '\0' && ((p = *++av) == NULL || *p == '-')) | |
480 | { | |
481 | usrerr("Bad -R flag"); | |
482 | ExitStat = EX_USAGE; | |
483 | av--; | |
484 | break; | |
485 | } | |
486 | RcptLogFile = newstr(p); | |
487 | break; | |
b3cbe40f EA |
488 | } |
489 | } | |
490 | ||
836a1487 EA |
491 | #ifdef NAMED_BIND |
492 | if (tTd(8, 1)) | |
493 | _res.options |= RES_DEBUG; | |
494 | #endif | |
495 | ||
9e3c0a28 | 496 | /* |
2cce0c26 EA |
497 | ** Do basic initialization. |
498 | ** Read system control file. | |
179c1218 | 499 | ** Extract special fields for local use. |
9e3c0a28 EA |
500 | */ |
501 | ||
46f6ec52 | 502 | if (OpMode == MD_FREEZE || readconfig) |
a4076aed | 503 | readcf(ConfFile, safecf, CurEnv); |
22659072 | 504 | |
ca4d0c0b EA |
505 | #ifdef SYSTEM5 |
506 | /* Enforce use of local time (null string overrides this) */ | |
507 | if (TimeZoneSpec == NULL) | |
508 | unsetenv("TZ"); | |
509 | else if (TimeZoneSpec[0] != '\0') | |
510 | { | |
511 | p = xalloc(strlen(TimeZoneSpec) + 4); | |
512 | (void) strcpy(p, "TZ="); | |
513 | (void) strcat(p, TimeZoneSpec); | |
514 | putenv(p); | |
515 | } | |
516 | #endif | |
517 | ||
2281a453 EA |
518 | if (ConfigLevel > MAXCONFIGLEVEL) |
519 | { | |
520 | syserr("Warning: .cf version level (%d) exceeds program functionality (%d)", | |
521 | ConfigLevel, MAXCONFIGLEVEL); | |
522 | } | |
75f95954 | 523 | switch (OpMode) |
acae5a9d | 524 | { |
26a3626c | 525 | case MD_FREEZE: |
a9621daf | 526 | /* this is critical to avoid forgeries of the frozen config */ |
0e306e7f EA |
527 | (void) setgid(getgid()); |
528 | (void) setuid(getuid()); | |
a9621daf EA |
529 | |
530 | /* freeze the configuration */ | |
8fe4fb9b | 531 | freeze(FreezeFile); |
acae5a9d | 532 | exit(EX_OK); |
26a3626c EA |
533 | |
534 | case MD_INITALIAS: | |
535 | Verbose = TRUE; | |
536 | break; | |
13dfebea EA |
537 | |
538 | case MD_DAEMON: | |
539 | /* remove things that don't make sense in daemon mode */ | |
540 | FullName = NULL; | |
541 | break; | |
acae5a9d | 542 | } |
179c1218 | 543 | |
6130649c EA |
544 | /* do heuristic mode adjustment */ |
545 | if (Verbose) | |
75f95954 EA |
546 | { |
547 | /* turn off noconnect option */ | |
548 | setoption('c', "F", TRUE, FALSE); | |
549 | ||
550 | /* turn on interactive delivery */ | |
551 | setoption('d', "", TRUE, FALSE); | |
552 | } | |
6130649c | 553 | |
179c1218 | 554 | /* our name for SMTP codes */ |
a73ae8ac | 555 | expand("\001j", jbuf, &jbuf[sizeof jbuf - 1], CurEnv); |
57c97d4a | 556 | MyHostName = jbuf; |
d6a28dd8 | 557 | |
179c1218 EA |
558 | /* the indices of local and program mailers */ |
559 | st = stab("local", ST_MAILER, ST_FIND); | |
560 | if (st == NULL) | |
561 | syserr("No local mailer defined"); | |
562 | else | |
563 | LocalMailer = st->s_mailer; | |
564 | st = stab("prog", ST_MAILER, ST_FIND); | |
565 | if (st == NULL) | |
566 | syserr("No prog mailer defined"); | |
567 | else | |
568 | ProgMailer = st->s_mailer; | |
569 | ||
6bbaf971 EA |
570 | /* operate in queue directory */ |
571 | if (chdir(QueueDir) < 0) | |
572 | { | |
573 | syserr("cannot chdir(%s)", QueueDir); | |
574 | exit(EX_SOFTWARE); | |
575 | } | |
576 | ||
64912e7e | 577 | /* |
55f0da62 | 578 | ** Do operation-mode-dependent initialization. |
64912e7e EA |
579 | */ |
580 | ||
55f0da62 | 581 | switch (OpMode) |
64912e7e | 582 | { |
55f0da62 EA |
583 | case MD_PRINT: |
584 | /* print the queue */ | |
74f37936 | 585 | #ifdef QUEUE |
64912e7e EA |
586 | dropenvelope(CurEnv); |
587 | printqueue(); | |
588 | exit(EX_OK); | |
74f37936 EA |
589 | #else QUEUE |
590 | usrerr("No queue to print"); | |
591 | finis(); | |
592 | #endif QUEUE | |
8acb5142 | 593 | |
55f0da62 EA |
594 | case MD_INITALIAS: |
595 | /* initialize alias database */ | |
a4076aed | 596 | initaliases(AliasFile, TRUE, CurEnv); |
f4dbf345 | 597 | exit(EX_OK); |
cdb17311 | 598 | |
55f0da62 EA |
599 | case MD_DAEMON: |
600 | /* don't open alias database -- done in srvrsmtp */ | |
601 | break; | |
602 | ||
603 | default: | |
604 | /* open the alias database */ | |
a4076aed | 605 | initaliases(AliasFile, FALSE, CurEnv); |
55f0da62 EA |
606 | break; |
607 | } | |
608 | ||
9678c96d | 609 | if (tTd(0, 15)) |
9c6d4c70 | 610 | { |
f6a0cc15 | 611 | /* print configuration table (or at least part of it) */ |
9c6d4c70 EA |
612 | printrules(); |
613 | for (i = 0; i < MAXMAILERS; i++) | |
614 | { | |
615 | register struct mailer *m = Mailer[i]; | |
1dbda134 | 616 | int j; |
9c6d4c70 EA |
617 | |
618 | if (m == NULL) | |
619 | continue; | |
97ad25b6 EA |
620 | printf("mailer %d (%s): P=%s S=%d R=%d M=%ld F=", i, m->m_name, |
621 | m->m_mailer, m->m_s_rwset, m->m_r_rwset, | |
622 | m->m_maxsize); | |
1dbda134 EA |
623 | for (j = '\0'; j <= '\177'; j++) |
624 | if (bitnset(j, m->m_flags)) | |
0e306e7f | 625 | (void) putchar(j); |
1dbda134 | 626 | printf(" E="); |
b3ef02a2 | 627 | xputs(m->m_eol); |
72f91c2e EA |
628 | if (m->m_argv != NULL) |
629 | { | |
630 | char **a = m->m_argv; | |
631 | ||
632 | printf(" A="); | |
633 | while (*a != NULL) | |
634 | { | |
635 | if (a != m->m_argv) | |
636 | printf(" "); | |
637 | xputs(*a++); | |
638 | } | |
639 | } | |
b3ef02a2 | 640 | printf("\n"); |
9c6d4c70 EA |
641 | } |
642 | } | |
9c6d4c70 | 643 | |
be2fcca9 EA |
644 | /* |
645 | ** Switch to the main envelope. | |
646 | */ | |
647 | ||
648 | CurEnv = newenvelope(&MainEnvelope); | |
e6f08ab1 | 649 | MainEnvelope.e_flags = BlankEnvelope.e_flags; |
be2fcca9 | 650 | |
cf69a203 EA |
651 | /* |
652 | ** If test mode, read addresses from stdin and process. | |
653 | */ | |
654 | ||
75f95954 | 655 | if (OpMode == MD_TEST) |
cf69a203 EA |
656 | { |
657 | char buf[MAXLINE]; | |
658 | ||
72f91c2e EA |
659 | printf("ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n"); |
660 | printf("Enter <ruleset> <address>\n"); | |
cf69a203 EA |
661 | for (;;) |
662 | { | |
663 | register char **pvp; | |
50435450 | 664 | char *q; |
50435450 | 665 | extern char *DelimChar; |
cf69a203 EA |
666 | |
667 | printf("> "); | |
0e306e7f | 668 | (void) fflush(stdout); |
cf69a203 EA |
669 | if (fgets(buf, sizeof buf, stdin) == NULL) |
670 | finis(); | |
f90b4150 | 671 | for (p = buf; isspace(*p); p++) |
cf69a203 | 672 | continue; |
ecfd2c8e EA |
673 | q = p; |
674 | while (*p != '\0' && !isspace(*p)) | |
675 | p++; | |
cf69a203 EA |
676 | if (*p == '\0') |
677 | continue; | |
50435450 EA |
678 | *p = '\0'; |
679 | do | |
ecfd2c8e | 680 | { |
217a0102 EA |
681 | extern char **prescan(); |
682 | char pvpbuf[PSBUFSIZE]; | |
683 | ||
684 | pvp = prescan(++p, ',', pvpbuf); | |
50435450 | 685 | if (pvp == NULL) |
ecfd2c8e | 686 | continue; |
50435450 EA |
687 | p = q; |
688 | while (*p != '\0') | |
689 | { | |
690 | rewrite(pvp, atoi(p)); | |
691 | while (*p != '\0' && *p++ != ',') | |
692 | continue; | |
693 | } | |
694 | } while (*(p = DelimChar) != '\0'); | |
cf69a203 EA |
695 | } |
696 | } | |
697 | ||
e3cd595c EA |
698 | # ifdef QUEUE |
699 | /* | |
700 | ** If collecting stuff from the queue, go start doing that. | |
701 | */ | |
702 | ||
7b21425b | 703 | if (queuemode && OpMode != MD_DAEMON && QueueIntvl == 0) |
e3cd595c | 704 | { |
ca4d0c0b | 705 | runqueue(FALSE); |
e3cd595c EA |
706 | finis(); |
707 | } | |
708 | # endif QUEUE | |
709 | ||
f6a0cc15 EA |
710 | /* |
711 | ** If a daemon, wait for a request. | |
712 | ** getrequests will always return in a child. | |
25b9d645 | 713 | ** If we should also be processing the queue, start |
19147b2d EA |
714 | ** doing it in background. |
715 | ** We check for any errors that might have happened | |
716 | ** during startup. | |
f6a0cc15 EA |
717 | */ |
718 | ||
75f95954 | 719 | if (OpMode == MD_DAEMON || QueueIntvl != 0) |
25b9d645 | 720 | { |
9678c96d | 721 | if (!tTd(0, 1)) |
58b27aa4 | 722 | { |
fcdf8200 | 723 | /* put us in background */ |
58b27aa4 EA |
724 | i = fork(); |
725 | if (i < 0) | |
726 | syserr("daemon: cannot fork"); | |
727 | if (i != 0) | |
728 | exit(0); | |
fcdf8200 EA |
729 | |
730 | /* get our pid right */ | |
d9162460 | 731 | MotherPid = getpid(); |
fcdf8200 EA |
732 | |
733 | /* disconnect from our controlling tty */ | |
d188728a | 734 | disconnect(TRUE); |
58b27aa4 | 735 | } |
7338e3d4 | 736 | |
25b9d645 EA |
737 | # ifdef QUEUE |
738 | if (queuemode) | |
f309127e | 739 | { |
ca4d0c0b | 740 | runqueue(TRUE); |
75f95954 | 741 | if (OpMode != MD_DAEMON) |
f309127e EA |
742 | for (;;) |
743 | pause(); | |
744 | } | |
25b9d645 | 745 | # endif QUEUE |
7338e3d4 EA |
746 | dropenvelope(CurEnv); |
747 | ||
748 | #ifdef DAEMON | |
f6a0cc15 | 749 | getrequests(); |
2a16bae3 EA |
750 | |
751 | /* at this point we are in a child: reset state */ | |
75f95954 | 752 | OpMode = MD_SMTP; |
7338e3d4 | 753 | (void) newenvelope(CurEnv); |
912acb74 | 754 | openxscript(CurEnv); |
14a39063 | 755 | #endif DAEMON |
7338e3d4 | 756 | } |
88039044 EA |
757 | |
758 | # ifdef SMTP | |
759 | /* | |
760 | ** If running SMTP protocol, start collecting and executing | |
761 | ** commands. This will never return. | |
762 | */ | |
763 | ||
75f95954 | 764 | if (OpMode == MD_SMTP) |
a4076aed | 765 | smtp(CurEnv); |
88039044 EA |
766 | # endif SMTP |
767 | ||
f6a0cc15 | 768 | /* |
e6f08ab1 | 769 | ** Do basic system initialization and set the sender |
f6a0cc15 EA |
770 | */ |
771 | ||
a4076aed | 772 | initsys(CurEnv); |
b5958391 | 773 | setsender(from, CurEnv); |
a9e0e597 | 774 | |
0e1aa71e | 775 | if (*av == NULL && !GrabTo) |
e863b1fa | 776 | { |
2e3062fe EA |
777 | usrerr("Recipient names must be specified"); |
778 | ||
779 | /* collect body for UUCP return */ | |
780 | if (OpMode != MD_VERIFY) | |
a4076aed | 781 | collect(FALSE, CurEnv); |
e863b1fa EA |
782 | finis(); |
783 | } | |
75f95954 EA |
784 | if (OpMode == MD_VERIFY) |
785 | SendMode = SM_VERIFY; | |
b3cbe40f | 786 | |
b3cbe40f | 787 | /* |
d6b27179 | 788 | ** Scan argv and deliver the message to everyone. |
b3cbe40f EA |
789 | */ |
790 | ||
a4076aed | 791 | sendtoargv(av, CurEnv); |
b3cbe40f | 792 | |
72e9b3cc | 793 | /* if we have had errors sofar, arrange a meaningful exit stat */ |
d916f0ca | 794 | if (Errors > 0 && ExitStat == EX_OK) |
a4b004a6 | 795 | ExitStat = EX_USAGE; |
a4b004a6 | 796 | |
dc39c568 EA |
797 | /* |
798 | ** Read the input mail. | |
799 | */ | |
800 | ||
2654b031 | 801 | CurEnv->e_to = NULL; |
75f95954 | 802 | if (OpMode != MD_VERIFY || GrabTo) |
a4076aed | 803 | collect(FALSE, CurEnv); |
d829793b | 804 | errno = 0; |
35cc3fad | 805 | |
4e1f4d4b | 806 | /* collect statistics */ |
7338e3d4 EA |
807 | if (OpMode != MD_VERIFY) |
808 | markstats(CurEnv, (ADDRESS *) NULL); | |
b3cbe40f | 809 | |
9678c96d | 810 | if (tTd(1, 1)) |
2654b031 | 811 | printf("From person = \"%s\"\n", CurEnv->e_from.q_paddr); |
d6b27179 | 812 | |
b3cbe40f EA |
813 | /* |
814 | ** Actually send everything. | |
d6b27179 | 815 | ** If verifying, just ack. |
b3cbe40f EA |
816 | */ |
817 | ||
7338e3d4 EA |
818 | CurEnv->e_from.q_flags |= QDONTSEND; |
819 | CurEnv->e_to = NULL; | |
f7e74083 | 820 | sendall(CurEnv, SM_DEFAULT); |
b3cbe40f EA |
821 | |
822 | /* | |
823 | ** All done. | |
824 | */ | |
825 | ||
826 | finis(); | |
827 | } | |
828 | \f/* | |
829 | ** FINIS -- Clean up and exit. | |
830 | ** | |
b3cbe40f EA |
831 | ** Parameters: |
832 | ** none | |
833 | ** | |
834 | ** Returns: | |
835 | ** never | |
836 | ** | |
837 | ** Side Effects: | |
96faada8 | 838 | ** exits sendmail |
b3cbe40f EA |
839 | */ |
840 | ||
841 | finis() | |
842 | { | |
9678c96d | 843 | if (tTd(2, 1)) |
e6f08ab1 | 844 | printf("\n====finis: stat %d e_flags %o\n", ExitStat, CurEnv->e_flags); |
aba51985 | 845 | |
7338e3d4 | 846 | /* clean up temp files */ |
912acb74 | 847 | CurEnv->e_to = NULL; |
e6f08ab1 | 848 | dropenvelope(CurEnv); |
b3cbe40f | 849 | |
f2e44ded EA |
850 | /* flush any cached connections */ |
851 | mci_flush(); | |
852 | ||
7338e3d4 EA |
853 | /* post statistics */ |
854 | poststats(StatFile); | |
68f0b54c | 855 | |
7338e3d4 | 856 | /* and exit */ |
36a4e219 EA |
857 | # ifdef LOG |
858 | if (LogLevel > 11) | |
859 | syslog(LOG_DEBUG, "finis, pid=%d", getpid()); | |
860 | # endif LOG | |
c8ec8736 EA |
861 | if (ExitStat == EX_TEMPFAIL) |
862 | ExitStat = EX_OK; | |
b3cbe40f EA |
863 | exit(ExitStat); |
864 | } | |
865 | \f/* | |
6e2f38be EA |
866 | ** INTSIG -- clean up on interrupt |
867 | ** | |
7338e3d4 EA |
868 | ** This just arranges to exit. It pessimises in that it |
869 | ** may resend a message. | |
6e2f38be EA |
870 | ** |
871 | ** Parameters: | |
872 | ** none. | |
873 | ** | |
874 | ** Returns: | |
875 | ** none. | |
876 | ** | |
877 | ** Side Effects: | |
7338e3d4 | 878 | ** Unlocks the current job. |
6e2f38be EA |
879 | */ |
880 | ||
0df908a9 | 881 | void |
6e2f38be EA |
882 | intsig() |
883 | { | |
7338e3d4 EA |
884 | FileName = NULL; |
885 | unlockqueue(CurEnv); | |
886 | exit(EX_OK); | |
6e2f38be EA |
887 | } |
888 | \f/* | |
721fad23 EA |
889 | ** INITMACROS -- initialize the macro system |
890 | ** | |
891 | ** This just involves defining some macros that are actually | |
892 | ** used internally as metasymbols to be themselves. | |
893 | ** | |
894 | ** Parameters: | |
895 | ** none. | |
896 | ** | |
897 | ** Returns: | |
898 | ** none. | |
899 | ** | |
900 | ** Side Effects: | |
901 | ** initializes several macros to be themselves. | |
902 | */ | |
903 | ||
9dbc8d99 EA |
904 | struct metamac MetaMacros[] = |
905 | { | |
eca244ca | 906 | /* LHS pattern matching characters */ |
42fa5d67 EA |
907 | '*', MATCHZANY, '+', MATCHANY, '-', MATCHONE, |
908 | '=', MATCHCLASS, '~', MATCHNCLASS, | |
721fad23 EA |
909 | |
910 | /* these are RHS metasymbols */ | |
42fa5d67 EA |
911 | '#', CANONNET, '@', CANONHOST, ':', CANONUSER, |
912 | '>', CALLSUBR, | |
41173b8f | 913 | '{', MATCHLOOKUP, '}', MATCHELOOKUP, |
721fad23 | 914 | |
eca244ca | 915 | /* the conditional operations */ |
42fa5d67 | 916 | '?', CONDIF, '|', CONDELSE, '.', CONDFI, |
9dbc8d99 | 917 | |
eca244ca | 918 | /* and finally the hostname lookup characters */ |
42fa5d67 EA |
919 | '[', HOSTBEGIN, ']', HOSTEND, |
920 | '(', LOOKUPBEGIN, ')', LOOKUPEND, | |
eca244ca | 921 | |
9dbc8d99 | 922 | '\0' |
721fad23 EA |
923 | }; |
924 | ||
925 | initmacros() | |
926 | { | |
9dbc8d99 EA |
927 | register struct metamac *m; |
928 | char buf[5]; | |
929 | register int c; | |
721fad23 | 930 | |
9dbc8d99 EA |
931 | for (m = MetaMacros; m->metaname != '\0'; m++) |
932 | { | |
933 | buf[0] = m->metaval; | |
934 | buf[1] = '\0'; | |
7338e3d4 | 935 | define(m->metaname, newstr(buf), CurEnv); |
9dbc8d99 EA |
936 | } |
937 | buf[0] = MATCHREPL; | |
938 | buf[2] = '\0'; | |
939 | for (c = '0'; c <= '9'; c++) | |
940 | { | |
941 | buf[1] = c; | |
7338e3d4 | 942 | define(c, newstr(buf), CurEnv); |
9dbc8d99 | 943 | } |
721fad23 | 944 | } |
dd1fe05b | 945 | \f/* |
acae5a9d EA |
946 | ** FREEZE -- freeze BSS & allocated memory |
947 | ** | |
948 | ** This will be used to efficiently load the configuration file. | |
949 | ** | |
950 | ** Parameters: | |
8fe4fb9b | 951 | ** freezefile -- the name of the file to freeze to. |
acae5a9d EA |
952 | ** |
953 | ** Returns: | |
954 | ** none. | |
955 | ** | |
956 | ** Side Effects: | |
8fe4fb9b | 957 | ** Writes BSS and malloc'ed memory to freezefile |
acae5a9d EA |
958 | */ |
959 | ||
7338e3d4 | 960 | union frz |
acae5a9d | 961 | { |
7338e3d4 EA |
962 | char frzpad[BUFSIZ]; /* insure we are on a BUFSIZ boundary */ |
963 | struct | |
964 | { | |
965 | time_t frzstamp; /* timestamp on this freeze */ | |
966 | char *frzbrk; /* the current break */ | |
2e3062fe EA |
967 | char *frzedata; /* address of edata */ |
968 | char *frzend; /* address of end */ | |
7338e3d4 EA |
969 | char frzver[252]; /* sendmail version */ |
970 | } frzinfo; | |
acae5a9d EA |
971 | }; |
972 | ||
8fe4fb9b EA |
973 | freeze(freezefile) |
974 | char *freezefile; | |
acae5a9d EA |
975 | { |
976 | int f; | |
7338e3d4 | 977 | union frz fhdr; |
2e3062fe | 978 | extern char edata, end; |
acae5a9d | 979 | extern char *sbrk(); |
912acb74 | 980 | extern char Version[]; |
acae5a9d | 981 | |
8fe4fb9b | 982 | if (freezefile == NULL) |
acae5a9d EA |
983 | return; |
984 | ||
985 | /* try to open the freeze file */ | |
8fe4fb9b | 986 | f = creat(freezefile, FileMode); |
acae5a9d EA |
987 | if (f < 0) |
988 | { | |
2e15a2d8 | 989 | syserr("Cannot freeze %s", freezefile); |
acae5a9d EA |
990 | errno = 0; |
991 | return; | |
992 | } | |
993 | ||
994 | /* build the freeze header */ | |
7338e3d4 EA |
995 | fhdr.frzinfo.frzstamp = curtime(); |
996 | fhdr.frzinfo.frzbrk = sbrk(0); | |
2e3062fe EA |
997 | fhdr.frzinfo.frzedata = &edata; |
998 | fhdr.frzinfo.frzend = &end; | |
0e306e7f | 999 | (void) strcpy(fhdr.frzinfo.frzver, Version); |
acae5a9d EA |
1000 | |
1001 | /* write out the freeze header */ | |
611b763d | 1002 | if (write(f, (char *) &fhdr, sizeof fhdr) != sizeof fhdr || |
34fe0a9b EA |
1003 | write(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
1004 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
7338e3d4 | 1005 | { |
2e15a2d8 | 1006 | syserr("Cannot freeze %s", freezefile); |
7338e3d4 | 1007 | } |
acae5a9d EA |
1008 | |
1009 | /* fine, clean up */ | |
1010 | (void) close(f); | |
1011 | } | |
1012 | \f/* | |
1013 | ** THAW -- read in the frozen configuration file. | |
1014 | ** | |
1015 | ** Parameters: | |
8fe4fb9b | 1016 | ** freezefile -- the name of the file to thaw from. |
acae5a9d EA |
1017 | ** |
1018 | ** Returns: | |
1019 | ** TRUE if it successfully read the freeze file. | |
1020 | ** FALSE otherwise. | |
1021 | ** | |
1022 | ** Side Effects: | |
8fe4fb9b | 1023 | ** reads freezefile in to BSS area. |
acae5a9d EA |
1024 | */ |
1025 | ||
8fe4fb9b EA |
1026 | thaw(freezefile) |
1027 | char *freezefile; | |
acae5a9d EA |
1028 | { |
1029 | int f; | |
ccfed53c | 1030 | register char *p; |
7338e3d4 | 1031 | union frz fhdr; |
ccfed53c | 1032 | char hbuf[60]; |
a59237a4 | 1033 | extern char edata, end; |
912acb74 | 1034 | extern char Version[]; |
17a67c62 | 1035 | extern caddr_t brk(); |
ccfed53c EA |
1036 | extern char **myhostname(); |
1037 | extern char *macvalue(); | |
acae5a9d | 1038 | |
8fe4fb9b | 1039 | if (freezefile == NULL) |
acae5a9d EA |
1040 | return (FALSE); |
1041 | ||
1042 | /* open the freeze file */ | |
8fe4fb9b | 1043 | f = open(freezefile, 0); |
acae5a9d EA |
1044 | if (f < 0) |
1045 | { | |
1046 | errno = 0; | |
1047 | return (FALSE); | |
1048 | } | |
1049 | ||
1050 | /* read in the header */ | |
07adc4f5 RA |
1051 | if (read(f, (char *) &fhdr, sizeof fhdr) < sizeof fhdr) |
1052 | { | |
db281fbf | 1053 | syslog(LOG_WARNING, "Cannot read frozen config file"); |
07adc4f5 RA |
1054 | (void) close(f); |
1055 | return (FALSE); | |
1056 | } | |
db281fbf | 1057 | if (fhdr.frzinfo.frzedata != &edata || |
2e3062fe | 1058 | fhdr.frzinfo.frzend != &end || |
7338e3d4 | 1059 | strcmp(fhdr.frzinfo.frzver, Version) != 0) |
acae5a9d | 1060 | { |
07adc4f5 | 1061 | syslog(LOG_WARNING, "Wrong version of frozen config file"); |
acae5a9d EA |
1062 | (void) close(f); |
1063 | return (FALSE); | |
1064 | } | |
1065 | ||
1066 | /* arrange to have enough space */ | |
17a67c62 | 1067 | if (brk(fhdr.frzinfo.frzbrk) == (caddr_t) -1) |
acae5a9d | 1068 | { |
7338e3d4 | 1069 | syserr("Cannot break to %x", fhdr.frzinfo.frzbrk); |
acae5a9d EA |
1070 | (void) close(f); |
1071 | return (FALSE); | |
1072 | } | |
1073 | ||
1074 | /* now read in the freeze file */ | |
34fe0a9b EA |
1075 | if (read(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
1076 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
acae5a9d | 1077 | { |
07adc4f5 | 1078 | syserr("Cannot read frozen config file"); |
acae5a9d | 1079 | /* oops! we have trashed memory..... */ |
0e306e7f | 1080 | (void) write(2, "Cannot read freeze file\n", 24); |
7338e3d4 | 1081 | _exit(EX_SOFTWARE); |
acae5a9d EA |
1082 | } |
1083 | ||
1084 | (void) close(f); | |
ccfed53c EA |
1085 | |
1086 | /* verify that the host name was correct on the freeze */ | |
1087 | (void) myhostname(hbuf, sizeof hbuf); | |
1088 | p = macvalue('w', CurEnv); | |
1089 | if (p == NULL) | |
1090 | p = ""; | |
1091 | if (strcmp(hbuf, macvalue('w', CurEnv)) == 0) | |
1092 | return (TRUE); | |
1093 | syslog(LOG_WARNING, "Hostname changed since freeze (%s => %s)", | |
1094 | p, hbuf); | |
1095 | return (FALSE); | |
acae5a9d | 1096 | } |
813d8709 EA |
1097 | \f/* |
1098 | ** DISCONNECT -- remove our connection with any foreground process | |
1099 | ** | |
1100 | ** Parameters: | |
d188728a EA |
1101 | ** fulldrop -- if set, we should also drop the controlling |
1102 | ** TTY if possible -- this should only be done when | |
1103 | ** setting up the daemon since otherwise UUCP can | |
1104 | ** leave us trying to open a dialin, and we will | |
1105 | ** wait for the carrier. | |
813d8709 EA |
1106 | ** |
1107 | ** Returns: | |
1108 | ** none | |
1109 | ** | |
1110 | ** Side Effects: | |
1111 | ** Trys to insure that we are immune to vagaries of | |
1112 | ** the controlling tty. | |
1113 | */ | |
1114 | ||
d188728a EA |
1115 | disconnect(fulldrop) |
1116 | bool fulldrop; | |
813d8709 EA |
1117 | { |
1118 | int fd; | |
1119 | ||
e6f08ab1 | 1120 | if (tTd(52, 1)) |
b9accadd EA |
1121 | printf("disconnect: In %d Out %d\n", fileno(InChannel), |
1122 | fileno(OutChannel)); | |
e6f08ab1 | 1123 | if (tTd(52, 5)) |
813d8709 | 1124 | { |
e6f08ab1 EA |
1125 | printf("don't\n"); |
1126 | return; | |
813d8709 | 1127 | } |
813d8709 EA |
1128 | |
1129 | /* be sure we don't get nasty signals */ | |
0e306e7f EA |
1130 | (void) signal(SIGHUP, SIG_IGN); |
1131 | (void) signal(SIGINT, SIG_IGN); | |
1132 | (void) signal(SIGQUIT, SIG_IGN); | |
813d8709 EA |
1133 | |
1134 | /* we can't communicate with our caller, so.... */ | |
7338e3d4 EA |
1135 | HoldErrs = TRUE; |
1136 | ErrorMode = EM_MAIL; | |
813d8709 EA |
1137 | Verbose = FALSE; |
1138 | ||
1139 | /* all input from /dev/null */ | |
813d8709 | 1140 | if (InChannel != stdin) |
b9accadd EA |
1141 | { |
1142 | (void) fclose(InChannel); | |
1143 | InChannel = stdin; | |
1144 | } | |
1145 | (void) freopen("/dev/null", "r", stdin); | |
813d8709 EA |
1146 | |
1147 | /* output to the transcript */ | |
b9accadd | 1148 | if (OutChannel != stdout) |
813d8709 | 1149 | { |
b9accadd EA |
1150 | (void) fclose(OutChannel); |
1151 | OutChannel = stdout; | |
813d8709 | 1152 | } |
912acb74 EA |
1153 | if (CurEnv->e_xfp == NULL) |
1154 | CurEnv->e_xfp = fopen("/dev/null", "w"); | |
b9accadd EA |
1155 | (void) fflush(stdout); |
1156 | (void) close(1); | |
1157 | (void) close(2); | |
912acb74 | 1158 | while ((fd = dup(fileno(CurEnv->e_xfp))) < 2 && fd > 0) |
b9accadd | 1159 | continue; |
813d8709 | 1160 | |
e6f08ab1 | 1161 | /* drop our controlling TTY completely if possible */ |
d188728a | 1162 | if (fulldrop) |
e6f08ab1 | 1163 | { |
afe907a4 MK |
1164 | #if BSD > 43 |
1165 | daemon(1, 1); | |
1166 | #else | |
1167 | #ifdef TIOCNOTTY | |
d188728a EA |
1168 | fd = open("/dev/tty", 2); |
1169 | if (fd >= 0) | |
1170 | { | |
17a67c62 | 1171 | (void) ioctl(fd, (int) TIOCNOTTY, (char *) 0); |
d188728a EA |
1172 | (void) close(fd); |
1173 | } | |
17a67c62 | 1174 | (void) setpgrp(0, 0); |
afe907a4 MK |
1175 | #endif /* TIOCNOTTY */ |
1176 | #endif /* BSD */ | |
70faa7c8 | 1177 | errno = 0; |
e6f08ab1 | 1178 | } |
e6f08ab1 | 1179 | |
813d8709 EA |
1180 | # ifdef LOG |
1181 | if (LogLevel > 11) | |
1182 | syslog(LOG_DEBUG, "in background, pid=%d", getpid()); | |
1183 | # endif LOG | |
1184 | ||
1185 | errno = 0; | |
1186 | } |