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 | |
3251a23d | 16 | static char sccsid[] = "@(#)main.c 5.57 (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; |
d0a69620 | 121 | int j; |
4388720d | 122 | bool readconfig = TRUE; |
aba51985 | 123 | bool queuemode = FALSE; /* process queue requests */ |
43e0af62 | 124 | bool nothaw; |
66391bf0 | 125 | bool safecf = TRUE; |
be2fcca9 | 126 | static bool reenter = FALSE; |
ccfed53c | 127 | char jbuf[60]; /* holds MyHostName */ |
3eb4fac4 | 128 | extern int DtableSize; |
f6a0cc15 | 129 | extern bool safefile(); |
ed45aae1 | 130 | extern time_t convtime(); |
dd1fe05b | 131 | extern putheader(), putbody(); |
be2fcca9 | 132 | extern ENVELOPE *newenvelope(); |
0df908a9 | 133 | extern void intsig(); |
1dbda134 | 134 | extern char **myhostname(); |
22e6d6b8 | 135 | extern char *arpadate(); |
e36705df | 136 | extern char **environ; |
b72377c6 | 137 | |
22659072 EA |
138 | /* |
139 | ** Check to see if we reentered. | |
140 | ** This would normally happen if e_putheader or e_putbody | |
141 | ** were NULL when invoked. | |
142 | */ | |
143 | ||
b72377c6 EA |
144 | if (reenter) |
145 | { | |
146 | syserr("main: reentered!"); | |
147 | abort(); | |
148 | } | |
149 | reenter = TRUE; | |
abae7b2d | 150 | extern ADDRESS *recipient(); |
17df0fcb | 151 | bool canrename; |
b3cbe40f | 152 | |
07c63e56 | 153 | #ifndef SYS5TZ |
140717b5 EA |
154 | /* enforce use of kernel-supplied time zone information */ |
155 | unsetenv("TZ"); | |
156 | #endif | |
60c0b7b2 | 157 | |
3eb4fac4 EA |
158 | /* in 4.4BSD, the table can be huge; impose a reasonable limit */ |
159 | DtableSize = getdtablesize(); | |
160 | if (DtableSize > 256) | |
161 | DtableSize = 256; | |
162 | ||
d15bd559 EA |
163 | /* |
164 | ** Be sure we have enough file descriptors. | |
59b65d0f | 165 | ** But also be sure that 0, 1, & 2 are open. |
d15bd559 EA |
166 | */ |
167 | ||
e1098041 | 168 | i = open("/dev/null", O_RDWR); |
59b65d0f EA |
169 | while (i >= 0 && i < 2) |
170 | i = dup(i); | |
66391bf0 | 171 | |
3eb4fac4 | 172 | i = DtableSize; |
66391bf0 | 173 | while (--i > 2) |
d15bd559 EA |
174 | (void) close(i); |
175 | errno = 0; | |
176 | ||
07adc4f5 RA |
177 | #ifdef LOG_MAIL |
178 | openlog("sendmail", LOG_PID, LOG_MAIL); | |
179 | #else | |
180 | openlog("sendmail", LOG_PID); | |
181 | #endif | |
182 | ||
8ff78b51 EA |
183 | /* |
184 | ** Set default values for variables. | |
185 | ** These cannot be in initialized data space. | |
186 | */ | |
187 | ||
188 | setdefaults(); | |
189 | ||
bb09c502 EA |
190 | /* set up the blank envelope */ |
191 | BlankEnvelope.e_puthdr = putheader; | |
192 | BlankEnvelope.e_putbody = putbody; | |
193 | BlankEnvelope.e_xfp = NULL; | |
2e3062fe | 194 | STRUCTCOPY(NullAddress, BlankEnvelope.e_from); |
bd575ea9 EA |
195 | STRUCTCOPY(BlankEnvelope, MainEnvelope); |
196 | CurEnv = &MainEnvelope; | |
bb09c502 | 197 | |
22659072 EA |
198 | /* |
199 | ** Do a quick prescan of the argument list. | |
200 | ** We do this to find out if we can potentially thaw the | |
201 | ** configuration file. If not, we do the thaw now so that | |
202 | ** the argument processing applies to this run rather than | |
203 | ** to the run that froze the configuration. | |
204 | */ | |
205 | ||
d6b27179 | 206 | argv[argc] = NULL; |
22659072 | 207 | av = argv; |
43e0af62 | 208 | nothaw = FALSE; |
560a80d9 | 209 | while ((p = *++av) != NULL) |
22659072 | 210 | { |
560a80d9 EA |
211 | if (strncmp(p, "-C", 2) == 0) |
212 | { | |
213 | ConfFile = &p[2]; | |
214 | if (ConfFile[0] == '\0') | |
215 | ConfFile = "sendmail.cf"; | |
0e306e7f EA |
216 | (void) setgid(getrgid()); |
217 | (void) setuid(getruid()); | |
66391bf0 | 218 | safecf = FALSE; |
43e0af62 | 219 | nothaw = TRUE; |
560a80d9 EA |
220 | } |
221 | else if (strncmp(p, "-bz", 3) == 0) | |
43e0af62 | 222 | nothaw = TRUE; |
43e0af62 EA |
223 | else if (strncmp(p, "-d", 2) == 0) |
224 | { | |
225 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); | |
226 | tTflag(&p[2]); | |
227 | setbuf(stdout, (char *) NULL); | |
228 | printf("Version %s\n", Version); | |
229 | } | |
22659072 | 230 | } |
2bc15c4e KB |
231 | |
232 | InChannel = stdin; | |
233 | OutChannel = stdout; | |
234 | ||
43e0af62 | 235 | if (!nothaw) |
22659072 EA |
236 | readconfig = !thaw(FreezeFile); |
237 | ||
e36705df | 238 | /* reset the environment after the thaw */ |
d0a69620 EA |
239 | i = j = 0; |
240 | while (j < MAXUSERENVIRON && (p = envp[i++]) != NULL) | |
241 | { | |
3251a23d | 242 | /* strip out "dangerous" envariables */ |
d0a69620 EA |
243 | if (strncmp(p, "FS=", 3) == 0 || strncmp(p, "LD_", 3) == 0) |
244 | continue; | |
245 | UserEnviron[j++] = newstr(p); | |
246 | } | |
247 | UserEnviron[j] = NULL; | |
42bbf376 EA |
248 | environ = UserEnviron; |
249 | ||
250 | # ifdef SETPROCTITLE | |
251 | /* | |
252 | ** Save start and extent of argv for setproctitle. | |
253 | */ | |
254 | ||
255 | Argv = argv; | |
3251a23d | 256 | if (--i > 0) |
577bce94 EA |
257 | LastArgv = envp[i - 1] + strlen(envp[i - 1]); |
258 | else | |
259 | LastArgv = argv[argc - 1] + strlen(argv[argc - 1]); | |
42bbf376 | 260 | # endif SETPROCTITLE |
e36705df | 261 | |
b3cbe40f | 262 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) |
6e2f38be | 263 | (void) signal(SIGINT, intsig); |
eb211e2c | 264 | if (signal(SIGHUP, SIG_IGN) != SIG_IGN) |
6e2f38be EA |
265 | (void) signal(SIGHUP, intsig); |
266 | (void) signal(SIGTERM, intsig); | |
ed7382d3 | 267 | (void) signal(SIGPIPE, SIG_IGN); |
a0554f81 | 268 | OldUmask = umask(0); |
75f95954 | 269 | OpMode = MD_DELIVER; |
e673aad7 | 270 | MotherPid = getpid(); |
561c7c50 | 271 | FullName = getenv("NAME"); |
dd1fe05b | 272 | |
b3cbe40f EA |
273 | errno = 0; |
274 | from = NULL; | |
378e8da7 | 275 | |
4388720d | 276 | if (readconfig) |
1dbda134 | 277 | { |
4388720d EA |
278 | /* initialize some macros, etc. */ |
279 | initmacros(); | |
280 | ||
281 | /* hostname */ | |
282 | av = myhostname(jbuf, sizeof jbuf); | |
283 | if (jbuf[0] != '\0') | |
284 | { | |
dec0d30e EA |
285 | register char *q; |
286 | extern char *strchr(); | |
287 | ||
43e0af62 EA |
288 | if (tTd(0, 4)) |
289 | printf("canonical name: %s\n", jbuf); | |
4388720d EA |
290 | p = newstr(jbuf); |
291 | define('w', p, CurEnv); | |
dec0d30e EA |
292 | |
293 | q = strchr(jbuf, '.'); | |
294 | if (q != NULL) | |
295 | { | |
1bc035b0 | 296 | *q++ = '\0'; |
dec0d30e | 297 | p = newstr(jbuf); |
1bc035b0 | 298 | define('m', q, CurEnv); |
dec0d30e | 299 | } |
4388720d EA |
300 | setclass('w', p); |
301 | } | |
302 | while (av != NULL && *av != NULL) | |
43e0af62 | 303 | { |
43e0af62 EA |
304 | if (tTd(0, 4)) |
305 | printf("\ta.k.a.: %s\n", *av); | |
4388720d | 306 | setclass('w', *av++); |
43e0af62 | 307 | } |
4388720d EA |
308 | |
309 | /* version */ | |
310 | define('v', Version, CurEnv); | |
1dbda134 | 311 | } |
378e8da7 EA |
312 | |
313 | /* current time */ | |
22e6d6b8 | 314 | define('b', arpadate((char *) NULL), CurEnv); |
378e8da7 | 315 | |
a691a4a6 | 316 | /* |
c1e24818 | 317 | ** Crack argv. |
a691a4a6 EA |
318 | */ |
319 | ||
acae5a9d | 320 | av = argv; |
26a3626c EA |
321 | p = rindex(*av, '/'); |
322 | if (p++ == NULL) | |
323 | p = *av; | |
324 | if (strcmp(p, "newaliases") == 0) | |
75f95954 | 325 | OpMode = MD_INITALIAS; |
26a3626c | 326 | else if (strcmp(p, "mailq") == 0) |
75f95954 | 327 | OpMode = MD_PRINT; |
34fe0a9b EA |
328 | else if (strcmp(p, "smtpd") == 0) |
329 | OpMode = MD_DAEMON; | |
3110074f | 330 | while ((p = *++av) != NULL && p[0] == '-') |
a691a4a6 | 331 | { |
c1e24818 | 332 | switch (p[1]) |
a691a4a6 | 333 | { |
75f95954 EA |
334 | case 'b': /* operations mode */ |
335 | switch (p[2]) | |
c1e24818 | 336 | { |
75f95954 | 337 | case MD_DAEMON: |
908dc8db MK |
338 | # ifdef DAEMON |
339 | if (getuid() != 0) { | |
340 | usrerr("Permission denied"); | |
341 | exit (EX_USAGE); | |
342 | } | |
343 | (void) unsetenv("HOSTALIASES"); | |
344 | # else | |
2e15a2d8 MK |
345 | usrerr("Daemon mode not implemented"); |
346 | ExitStat = EX_USAGE; | |
75f95954 EA |
347 | break; |
348 | # endif DAEMON | |
349 | case MD_SMTP: | |
350 | # ifndef SMTP | |
2e15a2d8 MK |
351 | usrerr("I don't speak SMTP"); |
352 | ExitStat = EX_USAGE; | |
75f95954 | 353 | break; |
c1e24818 | 354 | # endif SMTP |
75f95954 EA |
355 | case MD_DELIVER: |
356 | case MD_VERIFY: | |
357 | case MD_TEST: | |
358 | case MD_INITALIAS: | |
359 | case MD_PRINT: | |
360 | case MD_FREEZE: | |
361 | OpMode = p[2]; | |
362 | break; | |
363 | ||
364 | default: | |
2e15a2d8 MK |
365 | usrerr("Invalid operation mode %c", p[2]); |
366 | ExitStat = EX_USAGE; | |
75f95954 | 367 | break; |
c1e24818 EA |
368 | } |
369 | break; | |
370 | ||
560a80d9 | 371 | case 'C': /* select configuration file (already done) */ |
c1e24818 | 372 | break; |
a691a4a6 | 373 | |
43e0af62 | 374 | case 'd': /* debugging -- redo in case frozen */ |
c1e24818 EA |
375 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); |
376 | tTflag(&p[2]); | |
377 | setbuf(stdout, (char *) NULL); | |
c1e24818 | 378 | break; |
b3cbe40f | 379 | |
b3cbe40f | 380 | case 'f': /* from address */ |
c1e24818 | 381 | case 'r': /* obsolete -f flag */ |
b3cbe40f | 382 | p += 2; |
3110074f | 383 | if (*p == '\0' && ((p = *++av) == NULL || *p == '-')) |
b3cbe40f | 384 | { |
acae5a9d | 385 | p = *++av; |
3110074f | 386 | if (p == NULL || *p == '-') |
b3cbe40f | 387 | { |
2e15a2d8 MK |
388 | usrerr("No \"from\" person"); |
389 | ExitStat = EX_USAGE; | |
acae5a9d | 390 | av--; |
b3cbe40f EA |
391 | break; |
392 | } | |
393 | } | |
22659072 | 394 | if (from != NULL) |
b3cbe40f | 395 | { |
2e15a2d8 MK |
396 | usrerr("More than one \"from\" person"); |
397 | ExitStat = EX_USAGE; | |
b3cbe40f EA |
398 | break; |
399 | } | |
2e3062fe | 400 | from = newstr(p); |
b3cbe40f EA |
401 | break; |
402 | ||
6da7b890 | 403 | case 'F': /* set full name */ |
74c5fe7c | 404 | p += 2; |
3110074f | 405 | if (*p == '\0' && ((p = *++av) == NULL || *p == '-')) |
74c5fe7c | 406 | { |
2e15a2d8 MK |
407 | usrerr("Bad -F flag"); |
408 | ExitStat = EX_USAGE; | |
3110074f EA |
409 | av--; |
410 | break; | |
74c5fe7c | 411 | } |
2e3062fe | 412 | FullName = newstr(p); |
6da7b890 EA |
413 | break; |
414 | ||
b3cbe40f EA |
415 | case 'h': /* hop count */ |
416 | p += 2; | |
3110074f | 417 | if (*p == '\0' && ((p = *++av) == NULL || !isdigit(*p))) |
b3cbe40f | 418 | { |
2e15a2d8 MK |
419 | usrerr("Bad hop count (%s)", p); |
420 | ExitStat = EX_USAGE; | |
3110074f EA |
421 | av--; |
422 | break; | |
b3cbe40f | 423 | } |
7338e3d4 | 424 | CurEnv->e_hopcount = atoi(p); |
b3cbe40f | 425 | break; |
b3cbe40f | 426 | |
c1e24818 EA |
427 | case 'n': /* don't alias */ |
428 | NoAlias = TRUE; | |
d59b067a EA |
429 | break; |
430 | ||
c1e24818 EA |
431 | case 'o': /* set option */ |
432 | setoption(p[2], &p[3], FALSE, TRUE); | |
14a39063 | 433 | break; |
cbdb7357 | 434 | |
ed45aae1 | 435 | case 'q': /* run queue files at intervals */ |
884a20cb | 436 | # ifdef QUEUE |
f2e44ded EA |
437 | if (getuid() != 0) |
438 | { | |
439 | struct stat stbuf; | |
440 | ||
441 | /* check to see if we own the queue directory */ | |
442 | if (stat(QueueDir, &stbuf) < 0) | |
443 | syserr("main: cannot stat %s", QueueDir); | |
444 | if (stbuf.st_uid != getuid()) | |
445 | { | |
446 | /* nope, really a botch */ | |
447 | usrerr("Permission denied"); | |
448 | exit (EX_NOPERM); | |
449 | } | |
908dc8db MK |
450 | } |
451 | (void) unsetenv("HOSTALIASES"); | |
d0a69620 | 452 | FullName = NULL; |
aba51985 | 453 | queuemode = TRUE; |
25b9d645 | 454 | QueueIntvl = convtime(&p[2]); |
884a20cb | 455 | # else QUEUE |
2e15a2d8 MK |
456 | usrerr("I don't know about queues"); |
457 | ExitStat = EX_USAGE; | |
884a20cb | 458 | # endif QUEUE |
ed45aae1 EA |
459 | break; |
460 | ||
c1e24818 EA |
461 | case 't': /* read recipients from message */ |
462 | GrabTo = TRUE; | |
463 | break; | |
464 | ||
465 | /* compatibility flags */ | |
c1e24818 EA |
466 | case 'c': /* connect to non-local mailers */ |
467 | case 'e': /* error message disposition */ | |
468 | case 'i': /* don't let dot stop me */ | |
469 | case 'm': /* send to me too */ | |
470 | case 'T': /* set timeout interval */ | |
471 | case 'v': /* give blow-by-blow description */ | |
472 | setoption(p[1], &p[2], FALSE, TRUE); | |
35cc3fad EA |
473 | break; |
474 | ||
c1e24818 EA |
475 | case 's': /* save From lines in headers */ |
476 | setoption('f', &p[2], FALSE, TRUE); | |
b3cbe40f | 477 | break; |
26a3626c EA |
478 | |
479 | # ifdef DBM | |
480 | case 'I': /* initialize alias DBM file */ | |
75f95954 | 481 | OpMode = MD_INITALIAS; |
26a3626c | 482 | break; |
ce46a48a EA |
483 | # endif /* DBM */ |
484 | ||
485 | case 'R': /* log raw recipient info */ | |
486 | p += 2; | |
487 | if (*p == '\0' && ((p = *++av) == NULL || *p == '-')) | |
488 | { | |
489 | usrerr("Bad -R flag"); | |
490 | ExitStat = EX_USAGE; | |
491 | av--; | |
492 | break; | |
493 | } | |
494 | RcptLogFile = newstr(p); | |
495 | break; | |
b3cbe40f EA |
496 | } |
497 | } | |
498 | ||
836a1487 EA |
499 | #ifdef NAMED_BIND |
500 | if (tTd(8, 1)) | |
501 | _res.options |= RES_DEBUG; | |
502 | #endif | |
503 | ||
9e3c0a28 | 504 | /* |
2cce0c26 EA |
505 | ** Do basic initialization. |
506 | ** Read system control file. | |
179c1218 | 507 | ** Extract special fields for local use. |
9e3c0a28 EA |
508 | */ |
509 | ||
46f6ec52 | 510 | if (OpMode == MD_FREEZE || readconfig) |
a4076aed | 511 | readcf(ConfFile, safecf, CurEnv); |
22659072 | 512 | |
07c63e56 | 513 | #ifdef SYS5TZ |
ca4d0c0b EA |
514 | /* Enforce use of local time (null string overrides this) */ |
515 | if (TimeZoneSpec == NULL) | |
516 | unsetenv("TZ"); | |
517 | else if (TimeZoneSpec[0] != '\0') | |
518 | { | |
519 | p = xalloc(strlen(TimeZoneSpec) + 4); | |
520 | (void) strcpy(p, "TZ="); | |
521 | (void) strcat(p, TimeZoneSpec); | |
522 | putenv(p); | |
523 | } | |
524 | #endif | |
525 | ||
2281a453 EA |
526 | if (ConfigLevel > MAXCONFIGLEVEL) |
527 | { | |
528 | syserr("Warning: .cf version level (%d) exceeds program functionality (%d)", | |
529 | ConfigLevel, MAXCONFIGLEVEL); | |
530 | } | |
75f95954 | 531 | switch (OpMode) |
acae5a9d | 532 | { |
26a3626c | 533 | case MD_FREEZE: |
a9621daf | 534 | /* this is critical to avoid forgeries of the frozen config */ |
0e306e7f EA |
535 | (void) setgid(getgid()); |
536 | (void) setuid(getuid()); | |
a9621daf EA |
537 | |
538 | /* freeze the configuration */ | |
8fe4fb9b | 539 | freeze(FreezeFile); |
acae5a9d | 540 | exit(EX_OK); |
26a3626c EA |
541 | |
542 | case MD_INITALIAS: | |
543 | Verbose = TRUE; | |
544 | break; | |
13dfebea EA |
545 | |
546 | case MD_DAEMON: | |
547 | /* remove things that don't make sense in daemon mode */ | |
548 | FullName = NULL; | |
549 | break; | |
acae5a9d | 550 | } |
179c1218 | 551 | |
6130649c EA |
552 | /* do heuristic mode adjustment */ |
553 | if (Verbose) | |
75f95954 EA |
554 | { |
555 | /* turn off noconnect option */ | |
556 | setoption('c', "F", TRUE, FALSE); | |
557 | ||
558 | /* turn on interactive delivery */ | |
559 | setoption('d', "", TRUE, FALSE); | |
560 | } | |
6130649c | 561 | |
179c1218 | 562 | /* our name for SMTP codes */ |
a73ae8ac | 563 | expand("\001j", jbuf, &jbuf[sizeof jbuf - 1], CurEnv); |
57c97d4a | 564 | MyHostName = jbuf; |
d6a28dd8 | 565 | |
179c1218 EA |
566 | /* the indices of local and program mailers */ |
567 | st = stab("local", ST_MAILER, ST_FIND); | |
568 | if (st == NULL) | |
569 | syserr("No local mailer defined"); | |
570 | else | |
571 | LocalMailer = st->s_mailer; | |
572 | st = stab("prog", ST_MAILER, ST_FIND); | |
573 | if (st == NULL) | |
574 | syserr("No prog mailer defined"); | |
575 | else | |
576 | ProgMailer = st->s_mailer; | |
577 | ||
6bbaf971 EA |
578 | /* operate in queue directory */ |
579 | if (chdir(QueueDir) < 0) | |
580 | { | |
581 | syserr("cannot chdir(%s)", QueueDir); | |
582 | exit(EX_SOFTWARE); | |
583 | } | |
584 | ||
64912e7e | 585 | /* |
55f0da62 | 586 | ** Do operation-mode-dependent initialization. |
64912e7e EA |
587 | */ |
588 | ||
55f0da62 | 589 | switch (OpMode) |
64912e7e | 590 | { |
55f0da62 EA |
591 | case MD_PRINT: |
592 | /* print the queue */ | |
74f37936 | 593 | #ifdef QUEUE |
64912e7e EA |
594 | dropenvelope(CurEnv); |
595 | printqueue(); | |
596 | exit(EX_OK); | |
74f37936 EA |
597 | #else QUEUE |
598 | usrerr("No queue to print"); | |
599 | finis(); | |
600 | #endif QUEUE | |
8acb5142 | 601 | |
55f0da62 EA |
602 | case MD_INITALIAS: |
603 | /* initialize alias database */ | |
a4076aed | 604 | initaliases(AliasFile, TRUE, CurEnv); |
f4dbf345 | 605 | exit(EX_OK); |
cdb17311 | 606 | |
55f0da62 EA |
607 | case MD_DAEMON: |
608 | /* don't open alias database -- done in srvrsmtp */ | |
609 | break; | |
610 | ||
611 | default: | |
612 | /* open the alias database */ | |
a4076aed | 613 | initaliases(AliasFile, FALSE, CurEnv); |
55f0da62 EA |
614 | break; |
615 | } | |
616 | ||
9678c96d | 617 | if (tTd(0, 15)) |
9c6d4c70 | 618 | { |
f6a0cc15 | 619 | /* print configuration table (or at least part of it) */ |
9c6d4c70 EA |
620 | printrules(); |
621 | for (i = 0; i < MAXMAILERS; i++) | |
622 | { | |
623 | register struct mailer *m = Mailer[i]; | |
1dbda134 | 624 | int j; |
9c6d4c70 EA |
625 | |
626 | if (m == NULL) | |
627 | continue; | |
97ad25b6 EA |
628 | printf("mailer %d (%s): P=%s S=%d R=%d M=%ld F=", i, m->m_name, |
629 | m->m_mailer, m->m_s_rwset, m->m_r_rwset, | |
630 | m->m_maxsize); | |
1dbda134 EA |
631 | for (j = '\0'; j <= '\177'; j++) |
632 | if (bitnset(j, m->m_flags)) | |
0e306e7f | 633 | (void) putchar(j); |
1dbda134 | 634 | printf(" E="); |
b3ef02a2 | 635 | xputs(m->m_eol); |
72f91c2e EA |
636 | if (m->m_argv != NULL) |
637 | { | |
638 | char **a = m->m_argv; | |
639 | ||
640 | printf(" A="); | |
641 | while (*a != NULL) | |
642 | { | |
643 | if (a != m->m_argv) | |
644 | printf(" "); | |
645 | xputs(*a++); | |
646 | } | |
647 | } | |
b3ef02a2 | 648 | printf("\n"); |
9c6d4c70 EA |
649 | } |
650 | } | |
9c6d4c70 | 651 | |
be2fcca9 EA |
652 | /* |
653 | ** Switch to the main envelope. | |
654 | */ | |
655 | ||
656 | CurEnv = newenvelope(&MainEnvelope); | |
e6f08ab1 | 657 | MainEnvelope.e_flags = BlankEnvelope.e_flags; |
be2fcca9 | 658 | |
cf69a203 EA |
659 | /* |
660 | ** If test mode, read addresses from stdin and process. | |
661 | */ | |
662 | ||
75f95954 | 663 | if (OpMode == MD_TEST) |
cf69a203 EA |
664 | { |
665 | char buf[MAXLINE]; | |
666 | ||
72f91c2e EA |
667 | printf("ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n"); |
668 | printf("Enter <ruleset> <address>\n"); | |
cf69a203 EA |
669 | for (;;) |
670 | { | |
671 | register char **pvp; | |
50435450 | 672 | char *q; |
50435450 | 673 | extern char *DelimChar; |
cf69a203 EA |
674 | |
675 | printf("> "); | |
0e306e7f | 676 | (void) fflush(stdout); |
cf69a203 EA |
677 | if (fgets(buf, sizeof buf, stdin) == NULL) |
678 | finis(); | |
f90b4150 | 679 | for (p = buf; isspace(*p); p++) |
cf69a203 | 680 | continue; |
ecfd2c8e EA |
681 | q = p; |
682 | while (*p != '\0' && !isspace(*p)) | |
683 | p++; | |
cf69a203 EA |
684 | if (*p == '\0') |
685 | continue; | |
50435450 EA |
686 | *p = '\0'; |
687 | do | |
ecfd2c8e | 688 | { |
217a0102 EA |
689 | extern char **prescan(); |
690 | char pvpbuf[PSBUFSIZE]; | |
691 | ||
692 | pvp = prescan(++p, ',', pvpbuf); | |
50435450 | 693 | if (pvp == NULL) |
ecfd2c8e | 694 | continue; |
50435450 EA |
695 | p = q; |
696 | while (*p != '\0') | |
697 | { | |
698 | rewrite(pvp, atoi(p)); | |
699 | while (*p != '\0' && *p++ != ',') | |
700 | continue; | |
701 | } | |
702 | } while (*(p = DelimChar) != '\0'); | |
cf69a203 EA |
703 | } |
704 | } | |
705 | ||
e3cd595c EA |
706 | # ifdef QUEUE |
707 | /* | |
708 | ** If collecting stuff from the queue, go start doing that. | |
709 | */ | |
710 | ||
7b21425b | 711 | if (queuemode && OpMode != MD_DAEMON && QueueIntvl == 0) |
e3cd595c | 712 | { |
ca4d0c0b | 713 | runqueue(FALSE); |
e3cd595c EA |
714 | finis(); |
715 | } | |
716 | # endif QUEUE | |
717 | ||
f6a0cc15 EA |
718 | /* |
719 | ** If a daemon, wait for a request. | |
720 | ** getrequests will always return in a child. | |
25b9d645 | 721 | ** If we should also be processing the queue, start |
19147b2d EA |
722 | ** doing it in background. |
723 | ** We check for any errors that might have happened | |
724 | ** during startup. | |
f6a0cc15 EA |
725 | */ |
726 | ||
75f95954 | 727 | if (OpMode == MD_DAEMON || QueueIntvl != 0) |
25b9d645 | 728 | { |
9678c96d | 729 | if (!tTd(0, 1)) |
58b27aa4 | 730 | { |
fcdf8200 | 731 | /* put us in background */ |
58b27aa4 EA |
732 | i = fork(); |
733 | if (i < 0) | |
734 | syserr("daemon: cannot fork"); | |
735 | if (i != 0) | |
736 | exit(0); | |
fcdf8200 EA |
737 | |
738 | /* get our pid right */ | |
d9162460 | 739 | MotherPid = getpid(); |
fcdf8200 EA |
740 | |
741 | /* disconnect from our controlling tty */ | |
d188728a | 742 | disconnect(TRUE); |
58b27aa4 | 743 | } |
7338e3d4 | 744 | |
25b9d645 EA |
745 | # ifdef QUEUE |
746 | if (queuemode) | |
f309127e | 747 | { |
ca4d0c0b | 748 | runqueue(TRUE); |
75f95954 | 749 | if (OpMode != MD_DAEMON) |
f309127e EA |
750 | for (;;) |
751 | pause(); | |
752 | } | |
25b9d645 | 753 | # endif QUEUE |
7338e3d4 EA |
754 | dropenvelope(CurEnv); |
755 | ||
756 | #ifdef DAEMON | |
f6a0cc15 | 757 | getrequests(); |
2a16bae3 EA |
758 | |
759 | /* at this point we are in a child: reset state */ | |
75f95954 | 760 | OpMode = MD_SMTP; |
7338e3d4 | 761 | (void) newenvelope(CurEnv); |
912acb74 | 762 | openxscript(CurEnv); |
14a39063 | 763 | #endif DAEMON |
7338e3d4 | 764 | } |
88039044 EA |
765 | |
766 | # ifdef SMTP | |
767 | /* | |
768 | ** If running SMTP protocol, start collecting and executing | |
769 | ** commands. This will never return. | |
770 | */ | |
771 | ||
75f95954 | 772 | if (OpMode == MD_SMTP) |
a4076aed | 773 | smtp(CurEnv); |
88039044 EA |
774 | # endif SMTP |
775 | ||
f6a0cc15 | 776 | /* |
e6f08ab1 | 777 | ** Do basic system initialization and set the sender |
f6a0cc15 EA |
778 | */ |
779 | ||
a4076aed | 780 | initsys(CurEnv); |
b5958391 | 781 | setsender(from, CurEnv); |
a9e0e597 | 782 | |
0e1aa71e | 783 | if (*av == NULL && !GrabTo) |
e863b1fa | 784 | { |
2e3062fe EA |
785 | usrerr("Recipient names must be specified"); |
786 | ||
787 | /* collect body for UUCP return */ | |
788 | if (OpMode != MD_VERIFY) | |
a4076aed | 789 | collect(FALSE, CurEnv); |
e863b1fa EA |
790 | finis(); |
791 | } | |
75f95954 EA |
792 | if (OpMode == MD_VERIFY) |
793 | SendMode = SM_VERIFY; | |
b3cbe40f | 794 | |
b3cbe40f | 795 | /* |
d6b27179 | 796 | ** Scan argv and deliver the message to everyone. |
b3cbe40f EA |
797 | */ |
798 | ||
a4076aed | 799 | sendtoargv(av, CurEnv); |
b3cbe40f | 800 | |
72e9b3cc | 801 | /* if we have had errors sofar, arrange a meaningful exit stat */ |
d916f0ca | 802 | if (Errors > 0 && ExitStat == EX_OK) |
a4b004a6 | 803 | ExitStat = EX_USAGE; |
a4b004a6 | 804 | |
dc39c568 EA |
805 | /* |
806 | ** Read the input mail. | |
807 | */ | |
808 | ||
2654b031 | 809 | CurEnv->e_to = NULL; |
75f95954 | 810 | if (OpMode != MD_VERIFY || GrabTo) |
a4076aed | 811 | collect(FALSE, CurEnv); |
d829793b | 812 | errno = 0; |
35cc3fad | 813 | |
4e1f4d4b | 814 | /* collect statistics */ |
7338e3d4 EA |
815 | if (OpMode != MD_VERIFY) |
816 | markstats(CurEnv, (ADDRESS *) NULL); | |
b3cbe40f | 817 | |
9678c96d | 818 | if (tTd(1, 1)) |
2654b031 | 819 | printf("From person = \"%s\"\n", CurEnv->e_from.q_paddr); |
d6b27179 | 820 | |
b3cbe40f EA |
821 | /* |
822 | ** Actually send everything. | |
d6b27179 | 823 | ** If verifying, just ack. |
b3cbe40f EA |
824 | */ |
825 | ||
7338e3d4 EA |
826 | CurEnv->e_from.q_flags |= QDONTSEND; |
827 | CurEnv->e_to = NULL; | |
f7e74083 | 828 | sendall(CurEnv, SM_DEFAULT); |
b3cbe40f EA |
829 | |
830 | /* | |
831 | ** All done. | |
832 | */ | |
833 | ||
834 | finis(); | |
835 | } | |
836 | \f/* | |
837 | ** FINIS -- Clean up and exit. | |
838 | ** | |
b3cbe40f EA |
839 | ** Parameters: |
840 | ** none | |
841 | ** | |
842 | ** Returns: | |
843 | ** never | |
844 | ** | |
845 | ** Side Effects: | |
96faada8 | 846 | ** exits sendmail |
b3cbe40f EA |
847 | */ |
848 | ||
849 | finis() | |
850 | { | |
9678c96d | 851 | if (tTd(2, 1)) |
e6f08ab1 | 852 | printf("\n====finis: stat %d e_flags %o\n", ExitStat, CurEnv->e_flags); |
aba51985 | 853 | |
7338e3d4 | 854 | /* clean up temp files */ |
912acb74 | 855 | CurEnv->e_to = NULL; |
e6f08ab1 | 856 | dropenvelope(CurEnv); |
b3cbe40f | 857 | |
f2e44ded EA |
858 | /* flush any cached connections */ |
859 | mci_flush(); | |
860 | ||
7338e3d4 EA |
861 | /* post statistics */ |
862 | poststats(StatFile); | |
68f0b54c | 863 | |
7338e3d4 | 864 | /* and exit */ |
36a4e219 EA |
865 | # ifdef LOG |
866 | if (LogLevel > 11) | |
867 | syslog(LOG_DEBUG, "finis, pid=%d", getpid()); | |
868 | # endif LOG | |
c8ec8736 EA |
869 | if (ExitStat == EX_TEMPFAIL) |
870 | ExitStat = EX_OK; | |
b3cbe40f EA |
871 | exit(ExitStat); |
872 | } | |
873 | \f/* | |
6e2f38be EA |
874 | ** INTSIG -- clean up on interrupt |
875 | ** | |
7338e3d4 EA |
876 | ** This just arranges to exit. It pessimises in that it |
877 | ** may resend a message. | |
6e2f38be EA |
878 | ** |
879 | ** Parameters: | |
880 | ** none. | |
881 | ** | |
882 | ** Returns: | |
883 | ** none. | |
884 | ** | |
885 | ** Side Effects: | |
7338e3d4 | 886 | ** Unlocks the current job. |
6e2f38be EA |
887 | */ |
888 | ||
0df908a9 | 889 | void |
6e2f38be EA |
890 | intsig() |
891 | { | |
7338e3d4 EA |
892 | FileName = NULL; |
893 | unlockqueue(CurEnv); | |
894 | exit(EX_OK); | |
6e2f38be EA |
895 | } |
896 | \f/* | |
721fad23 EA |
897 | ** INITMACROS -- initialize the macro system |
898 | ** | |
899 | ** This just involves defining some macros that are actually | |
900 | ** used internally as metasymbols to be themselves. | |
901 | ** | |
902 | ** Parameters: | |
903 | ** none. | |
904 | ** | |
905 | ** Returns: | |
906 | ** none. | |
907 | ** | |
908 | ** Side Effects: | |
909 | ** initializes several macros to be themselves. | |
910 | */ | |
911 | ||
9dbc8d99 EA |
912 | struct metamac MetaMacros[] = |
913 | { | |
eca244ca | 914 | /* LHS pattern matching characters */ |
42fa5d67 EA |
915 | '*', MATCHZANY, '+', MATCHANY, '-', MATCHONE, |
916 | '=', MATCHCLASS, '~', MATCHNCLASS, | |
721fad23 EA |
917 | |
918 | /* these are RHS metasymbols */ | |
42fa5d67 EA |
919 | '#', CANONNET, '@', CANONHOST, ':', CANONUSER, |
920 | '>', CALLSUBR, | |
41173b8f | 921 | '{', MATCHLOOKUP, '}', MATCHELOOKUP, |
721fad23 | 922 | |
eca244ca | 923 | /* the conditional operations */ |
42fa5d67 | 924 | '?', CONDIF, '|', CONDELSE, '.', CONDFI, |
9dbc8d99 | 925 | |
eca244ca | 926 | /* and finally the hostname lookup characters */ |
42fa5d67 EA |
927 | '[', HOSTBEGIN, ']', HOSTEND, |
928 | '(', LOOKUPBEGIN, ')', LOOKUPEND, | |
eca244ca | 929 | |
9dbc8d99 | 930 | '\0' |
721fad23 EA |
931 | }; |
932 | ||
933 | initmacros() | |
934 | { | |
9dbc8d99 EA |
935 | register struct metamac *m; |
936 | char buf[5]; | |
937 | register int c; | |
721fad23 | 938 | |
9dbc8d99 EA |
939 | for (m = MetaMacros; m->metaname != '\0'; m++) |
940 | { | |
941 | buf[0] = m->metaval; | |
942 | buf[1] = '\0'; | |
7338e3d4 | 943 | define(m->metaname, newstr(buf), CurEnv); |
9dbc8d99 EA |
944 | } |
945 | buf[0] = MATCHREPL; | |
946 | buf[2] = '\0'; | |
947 | for (c = '0'; c <= '9'; c++) | |
948 | { | |
949 | buf[1] = c; | |
7338e3d4 | 950 | define(c, newstr(buf), CurEnv); |
9dbc8d99 | 951 | } |
721fad23 | 952 | } |
dd1fe05b | 953 | \f/* |
acae5a9d EA |
954 | ** FREEZE -- freeze BSS & allocated memory |
955 | ** | |
956 | ** This will be used to efficiently load the configuration file. | |
957 | ** | |
958 | ** Parameters: | |
8fe4fb9b | 959 | ** freezefile -- the name of the file to freeze to. |
acae5a9d EA |
960 | ** |
961 | ** Returns: | |
962 | ** none. | |
963 | ** | |
964 | ** Side Effects: | |
8fe4fb9b | 965 | ** Writes BSS and malloc'ed memory to freezefile |
acae5a9d EA |
966 | */ |
967 | ||
7338e3d4 | 968 | union frz |
acae5a9d | 969 | { |
7338e3d4 EA |
970 | char frzpad[BUFSIZ]; /* insure we are on a BUFSIZ boundary */ |
971 | struct | |
972 | { | |
973 | time_t frzstamp; /* timestamp on this freeze */ | |
974 | char *frzbrk; /* the current break */ | |
2e3062fe EA |
975 | char *frzedata; /* address of edata */ |
976 | char *frzend; /* address of end */ | |
7338e3d4 EA |
977 | char frzver[252]; /* sendmail version */ |
978 | } frzinfo; | |
acae5a9d EA |
979 | }; |
980 | ||
8fe4fb9b EA |
981 | freeze(freezefile) |
982 | char *freezefile; | |
acae5a9d EA |
983 | { |
984 | int f; | |
7338e3d4 | 985 | union frz fhdr; |
2e3062fe | 986 | extern char edata, end; |
acae5a9d | 987 | extern char *sbrk(); |
912acb74 | 988 | extern char Version[]; |
acae5a9d | 989 | |
8fe4fb9b | 990 | if (freezefile == NULL) |
acae5a9d EA |
991 | return; |
992 | ||
993 | /* try to open the freeze file */ | |
8fe4fb9b | 994 | f = creat(freezefile, FileMode); |
acae5a9d EA |
995 | if (f < 0) |
996 | { | |
2e15a2d8 | 997 | syserr("Cannot freeze %s", freezefile); |
acae5a9d EA |
998 | errno = 0; |
999 | return; | |
1000 | } | |
1001 | ||
1002 | /* build the freeze header */ | |
7338e3d4 EA |
1003 | fhdr.frzinfo.frzstamp = curtime(); |
1004 | fhdr.frzinfo.frzbrk = sbrk(0); | |
2e3062fe EA |
1005 | fhdr.frzinfo.frzedata = &edata; |
1006 | fhdr.frzinfo.frzend = &end; | |
0e306e7f | 1007 | (void) strcpy(fhdr.frzinfo.frzver, Version); |
acae5a9d EA |
1008 | |
1009 | /* write out the freeze header */ | |
611b763d | 1010 | if (write(f, (char *) &fhdr, sizeof fhdr) != sizeof fhdr || |
34fe0a9b EA |
1011 | write(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
1012 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
7338e3d4 | 1013 | { |
2e15a2d8 | 1014 | syserr("Cannot freeze %s", freezefile); |
7338e3d4 | 1015 | } |
acae5a9d EA |
1016 | |
1017 | /* fine, clean up */ | |
1018 | (void) close(f); | |
1019 | } | |
1020 | \f/* | |
1021 | ** THAW -- read in the frozen configuration file. | |
1022 | ** | |
1023 | ** Parameters: | |
8fe4fb9b | 1024 | ** freezefile -- the name of the file to thaw from. |
acae5a9d EA |
1025 | ** |
1026 | ** Returns: | |
1027 | ** TRUE if it successfully read the freeze file. | |
1028 | ** FALSE otherwise. | |
1029 | ** | |
1030 | ** Side Effects: | |
8fe4fb9b | 1031 | ** reads freezefile in to BSS area. |
acae5a9d EA |
1032 | */ |
1033 | ||
8fe4fb9b EA |
1034 | thaw(freezefile) |
1035 | char *freezefile; | |
acae5a9d EA |
1036 | { |
1037 | int f; | |
ccfed53c | 1038 | register char *p; |
7338e3d4 | 1039 | union frz fhdr; |
ccfed53c | 1040 | char hbuf[60]; |
a59237a4 | 1041 | extern char edata, end; |
912acb74 | 1042 | extern char Version[]; |
17a67c62 | 1043 | extern caddr_t brk(); |
ccfed53c EA |
1044 | extern char **myhostname(); |
1045 | extern char *macvalue(); | |
acae5a9d | 1046 | |
8fe4fb9b | 1047 | if (freezefile == NULL) |
acae5a9d EA |
1048 | return (FALSE); |
1049 | ||
1050 | /* open the freeze file */ | |
8fe4fb9b | 1051 | f = open(freezefile, 0); |
acae5a9d EA |
1052 | if (f < 0) |
1053 | { | |
1054 | errno = 0; | |
1055 | return (FALSE); | |
1056 | } | |
1057 | ||
1058 | /* read in the header */ | |
07adc4f5 RA |
1059 | if (read(f, (char *) &fhdr, sizeof fhdr) < sizeof fhdr) |
1060 | { | |
db281fbf | 1061 | syslog(LOG_WARNING, "Cannot read frozen config file"); |
07adc4f5 RA |
1062 | (void) close(f); |
1063 | return (FALSE); | |
1064 | } | |
db281fbf | 1065 | if (fhdr.frzinfo.frzedata != &edata || |
2e3062fe | 1066 | fhdr.frzinfo.frzend != &end || |
7338e3d4 | 1067 | strcmp(fhdr.frzinfo.frzver, Version) != 0) |
acae5a9d | 1068 | { |
07adc4f5 | 1069 | syslog(LOG_WARNING, "Wrong version of frozen config file"); |
acae5a9d EA |
1070 | (void) close(f); |
1071 | return (FALSE); | |
1072 | } | |
1073 | ||
1074 | /* arrange to have enough space */ | |
17a67c62 | 1075 | if (brk(fhdr.frzinfo.frzbrk) == (caddr_t) -1) |
acae5a9d | 1076 | { |
7338e3d4 | 1077 | syserr("Cannot break to %x", fhdr.frzinfo.frzbrk); |
acae5a9d EA |
1078 | (void) close(f); |
1079 | return (FALSE); | |
1080 | } | |
1081 | ||
1082 | /* now read in the freeze file */ | |
34fe0a9b EA |
1083 | if (read(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
1084 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
acae5a9d | 1085 | { |
07adc4f5 | 1086 | syserr("Cannot read frozen config file"); |
acae5a9d | 1087 | /* oops! we have trashed memory..... */ |
0e306e7f | 1088 | (void) write(2, "Cannot read freeze file\n", 24); |
7338e3d4 | 1089 | _exit(EX_SOFTWARE); |
acae5a9d EA |
1090 | } |
1091 | ||
1092 | (void) close(f); | |
ccfed53c EA |
1093 | |
1094 | /* verify that the host name was correct on the freeze */ | |
1095 | (void) myhostname(hbuf, sizeof hbuf); | |
1096 | p = macvalue('w', CurEnv); | |
1097 | if (p == NULL) | |
1098 | p = ""; | |
1099 | if (strcmp(hbuf, macvalue('w', CurEnv)) == 0) | |
1100 | return (TRUE); | |
1101 | syslog(LOG_WARNING, "Hostname changed since freeze (%s => %s)", | |
1102 | p, hbuf); | |
1103 | return (FALSE); | |
acae5a9d | 1104 | } |
813d8709 EA |
1105 | \f/* |
1106 | ** DISCONNECT -- remove our connection with any foreground process | |
1107 | ** | |
1108 | ** Parameters: | |
d188728a EA |
1109 | ** fulldrop -- if set, we should also drop the controlling |
1110 | ** TTY if possible -- this should only be done when | |
1111 | ** setting up the daemon since otherwise UUCP can | |
1112 | ** leave us trying to open a dialin, and we will | |
1113 | ** wait for the carrier. | |
813d8709 EA |
1114 | ** |
1115 | ** Returns: | |
1116 | ** none | |
1117 | ** | |
1118 | ** Side Effects: | |
1119 | ** Trys to insure that we are immune to vagaries of | |
1120 | ** the controlling tty. | |
1121 | */ | |
1122 | ||
d188728a EA |
1123 | disconnect(fulldrop) |
1124 | bool fulldrop; | |
813d8709 EA |
1125 | { |
1126 | int fd; | |
1127 | ||
e6f08ab1 | 1128 | if (tTd(52, 1)) |
b9accadd EA |
1129 | printf("disconnect: In %d Out %d\n", fileno(InChannel), |
1130 | fileno(OutChannel)); | |
e6f08ab1 | 1131 | if (tTd(52, 5)) |
813d8709 | 1132 | { |
e6f08ab1 EA |
1133 | printf("don't\n"); |
1134 | return; | |
813d8709 | 1135 | } |
813d8709 EA |
1136 | |
1137 | /* be sure we don't get nasty signals */ | |
0e306e7f EA |
1138 | (void) signal(SIGHUP, SIG_IGN); |
1139 | (void) signal(SIGINT, SIG_IGN); | |
1140 | (void) signal(SIGQUIT, SIG_IGN); | |
813d8709 EA |
1141 | |
1142 | /* we can't communicate with our caller, so.... */ | |
7338e3d4 EA |
1143 | HoldErrs = TRUE; |
1144 | ErrorMode = EM_MAIL; | |
813d8709 EA |
1145 | Verbose = FALSE; |
1146 | ||
1147 | /* all input from /dev/null */ | |
813d8709 | 1148 | if (InChannel != stdin) |
b9accadd EA |
1149 | { |
1150 | (void) fclose(InChannel); | |
1151 | InChannel = stdin; | |
1152 | } | |
1153 | (void) freopen("/dev/null", "r", stdin); | |
813d8709 EA |
1154 | |
1155 | /* output to the transcript */ | |
b9accadd | 1156 | if (OutChannel != stdout) |
813d8709 | 1157 | { |
b9accadd EA |
1158 | (void) fclose(OutChannel); |
1159 | OutChannel = stdout; | |
813d8709 | 1160 | } |
912acb74 EA |
1161 | if (CurEnv->e_xfp == NULL) |
1162 | CurEnv->e_xfp = fopen("/dev/null", "w"); | |
b9accadd EA |
1163 | (void) fflush(stdout); |
1164 | (void) close(1); | |
1165 | (void) close(2); | |
912acb74 | 1166 | while ((fd = dup(fileno(CurEnv->e_xfp))) < 2 && fd > 0) |
b9accadd | 1167 | continue; |
813d8709 | 1168 | |
e6f08ab1 | 1169 | /* drop our controlling TTY completely if possible */ |
d188728a | 1170 | if (fulldrop) |
e6f08ab1 | 1171 | { |
afe907a4 MK |
1172 | #if BSD > 43 |
1173 | daemon(1, 1); | |
1174 | #else | |
1175 | #ifdef TIOCNOTTY | |
d188728a EA |
1176 | fd = open("/dev/tty", 2); |
1177 | if (fd >= 0) | |
1178 | { | |
17a67c62 | 1179 | (void) ioctl(fd, (int) TIOCNOTTY, (char *) 0); |
d188728a EA |
1180 | (void) close(fd); |
1181 | } | |
17a67c62 | 1182 | (void) setpgrp(0, 0); |
afe907a4 MK |
1183 | #endif /* TIOCNOTTY */ |
1184 | #endif /* BSD */ | |
70faa7c8 | 1185 | errno = 0; |
e6f08ab1 | 1186 | } |
e6f08ab1 | 1187 | |
813d8709 EA |
1188 | # ifdef LOG |
1189 | if (LogLevel > 11) | |
1190 | syslog(LOG_DEBUG, "in background, pid=%d", getpid()); | |
1191 | # endif LOG | |
1192 | ||
1193 | errno = 0; | |
1194 | } |