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 | |
af04f6e4 | 16 | static char sccsid[] = "@(#)main.c 5.62 (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 */ | |
f3d8f6d6 | 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 | |
f3d8f6d6 EA |
102 | #endif /* SMTP */ |
103 | #endif /* DAEMON */ | |
4aebfe5d | 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; | |
af04f6e4 | 113 | register char *q; |
acae5a9d | 114 | char **av; |
17df0fcb | 115 | char *locname; |
b3cbe40f | 116 | extern int finis(); |
b3cbe40f | 117 | extern char Version[]; |
b3cbe40f | 118 | char *from; |
b3cbe40f | 119 | typedef int (*fnptr)(); |
be2fcca9 | 120 | STAB *st; |
9e3c0a28 | 121 | register int i; |
d0a69620 | 122 | int j; |
4388720d | 123 | bool readconfig = TRUE; |
aba51985 | 124 | bool queuemode = FALSE; /* process queue requests */ |
43e0af62 | 125 | bool nothaw; |
66391bf0 | 126 | bool safecf = TRUE; |
be2fcca9 | 127 | static bool reenter = FALSE; |
ccfed53c | 128 | char jbuf[60]; /* holds MyHostName */ |
3eb4fac4 | 129 | extern int DtableSize; |
f6a0cc15 | 130 | extern bool safefile(); |
ed45aae1 | 131 | extern time_t convtime(); |
dd1fe05b | 132 | extern putheader(), putbody(); |
be2fcca9 | 133 | extern ENVELOPE *newenvelope(); |
0df908a9 | 134 | extern void intsig(); |
1dbda134 | 135 | extern char **myhostname(); |
22e6d6b8 | 136 | extern char *arpadate(); |
e36705df | 137 | extern char **environ; |
b72377c6 | 138 | |
22659072 EA |
139 | /* |
140 | ** Check to see if we reentered. | |
141 | ** This would normally happen if e_putheader or e_putbody | |
142 | ** were NULL when invoked. | |
143 | */ | |
144 | ||
b72377c6 EA |
145 | if (reenter) |
146 | { | |
147 | syserr("main: reentered!"); | |
148 | abort(); | |
149 | } | |
150 | reenter = TRUE; | |
abae7b2d | 151 | extern ADDRESS *recipient(); |
17df0fcb | 152 | bool canrename; |
b3cbe40f | 153 | |
07c63e56 | 154 | #ifndef SYS5TZ |
140717b5 EA |
155 | /* enforce use of kernel-supplied time zone information */ |
156 | unsetenv("TZ"); | |
157 | #endif | |
60c0b7b2 | 158 | |
3eb4fac4 EA |
159 | /* in 4.4BSD, the table can be huge; impose a reasonable limit */ |
160 | DtableSize = getdtablesize(); | |
161 | if (DtableSize > 256) | |
162 | DtableSize = 256; | |
163 | ||
d15bd559 EA |
164 | /* |
165 | ** Be sure we have enough file descriptors. | |
59b65d0f | 166 | ** But also be sure that 0, 1, & 2 are open. |
d15bd559 EA |
167 | */ |
168 | ||
e1098041 | 169 | i = open("/dev/null", O_RDWR); |
59b65d0f EA |
170 | while (i >= 0 && i < 2) |
171 | i = dup(i); | |
66391bf0 | 172 | |
3eb4fac4 | 173 | i = DtableSize; |
66391bf0 | 174 | while (--i > 2) |
d15bd559 EA |
175 | (void) close(i); |
176 | errno = 0; | |
177 | ||
07adc4f5 RA |
178 | #ifdef LOG_MAIL |
179 | openlog("sendmail", LOG_PID, LOG_MAIL); | |
180 | #else | |
181 | openlog("sendmail", LOG_PID); | |
182 | #endif | |
183 | ||
8ff78b51 EA |
184 | /* |
185 | ** Set default values for variables. | |
186 | ** These cannot be in initialized data space. | |
187 | */ | |
188 | ||
189 | setdefaults(); | |
190 | ||
bb09c502 EA |
191 | /* set up the blank envelope */ |
192 | BlankEnvelope.e_puthdr = putheader; | |
193 | BlankEnvelope.e_putbody = putbody; | |
194 | BlankEnvelope.e_xfp = NULL; | |
2e3062fe | 195 | STRUCTCOPY(NullAddress, BlankEnvelope.e_from); |
bd575ea9 EA |
196 | STRUCTCOPY(BlankEnvelope, MainEnvelope); |
197 | CurEnv = &MainEnvelope; | |
bb09c502 | 198 | |
22659072 EA |
199 | /* |
200 | ** Do a quick prescan of the argument list. | |
201 | ** We do this to find out if we can potentially thaw the | |
202 | ** configuration file. If not, we do the thaw now so that | |
203 | ** the argument processing applies to this run rather than | |
204 | ** to the run that froze the configuration. | |
205 | */ | |
206 | ||
d6b27179 | 207 | argv[argc] = NULL; |
22659072 | 208 | av = argv; |
43e0af62 | 209 | nothaw = FALSE; |
560a80d9 | 210 | while ((p = *++av) != NULL) |
22659072 | 211 | { |
560a80d9 EA |
212 | if (strncmp(p, "-C", 2) == 0) |
213 | { | |
214 | ConfFile = &p[2]; | |
215 | if (ConfFile[0] == '\0') | |
216 | ConfFile = "sendmail.cf"; | |
0e306e7f EA |
217 | (void) setgid(getrgid()); |
218 | (void) setuid(getruid()); | |
66391bf0 | 219 | safecf = FALSE; |
43e0af62 | 220 | nothaw = TRUE; |
560a80d9 EA |
221 | } |
222 | else if (strncmp(p, "-bz", 3) == 0) | |
43e0af62 | 223 | nothaw = TRUE; |
43e0af62 EA |
224 | else if (strncmp(p, "-d", 2) == 0) |
225 | { | |
226 | tTsetup(tTdvect, sizeof tTdvect, "0-99.1"); | |
227 | tTflag(&p[2]); | |
228 | setbuf(stdout, (char *) NULL); | |
229 | printf("Version %s\n", Version); | |
230 | } | |
22659072 | 231 | } |
2bc15c4e KB |
232 | |
233 | InChannel = stdin; | |
234 | OutChannel = stdout; | |
235 | ||
43e0af62 | 236 | if (!nothaw) |
22659072 EA |
237 | readconfig = !thaw(FreezeFile); |
238 | ||
e36705df | 239 | /* reset the environment after the thaw */ |
d0a69620 EA |
240 | i = j = 0; |
241 | while (j < MAXUSERENVIRON && (p = envp[i++]) != NULL) | |
242 | { | |
3251a23d | 243 | /* strip out "dangerous" envariables */ |
d0a69620 EA |
244 | if (strncmp(p, "FS=", 3) == 0 || strncmp(p, "LD_", 3) == 0) |
245 | continue; | |
246 | UserEnviron[j++] = newstr(p); | |
247 | } | |
248 | UserEnviron[j] = NULL; | |
42bbf376 EA |
249 | environ = UserEnviron; |
250 | ||
251 | # ifdef SETPROCTITLE | |
252 | /* | |
253 | ** Save start and extent of argv for setproctitle. | |
254 | */ | |
255 | ||
256 | Argv = argv; | |
3251a23d | 257 | if (--i > 0) |
577bce94 EA |
258 | LastArgv = envp[i - 1] + strlen(envp[i - 1]); |
259 | else | |
260 | LastArgv = argv[argc - 1] + strlen(argv[argc - 1]); | |
f3d8f6d6 | 261 | # endif /* SETPROCTITLE */ |
e36705df | 262 | |
b3cbe40f | 263 | if (signal(SIGINT, SIG_IGN) != SIG_IGN) |
6e2f38be | 264 | (void) signal(SIGINT, intsig); |
eb211e2c | 265 | if (signal(SIGHUP, SIG_IGN) != SIG_IGN) |
6e2f38be EA |
266 | (void) signal(SIGHUP, intsig); |
267 | (void) signal(SIGTERM, intsig); | |
ed7382d3 | 268 | (void) signal(SIGPIPE, SIG_IGN); |
a0554f81 | 269 | OldUmask = umask(0); |
75f95954 | 270 | OpMode = MD_DELIVER; |
e673aad7 | 271 | MotherPid = getpid(); |
561c7c50 | 272 | FullName = getenv("NAME"); |
dd1fe05b | 273 | |
b3cbe40f EA |
274 | errno = 0; |
275 | from = NULL; | |
378e8da7 | 276 | |
4388720d | 277 | if (readconfig) |
1dbda134 | 278 | { |
4388720d EA |
279 | /* initialize some macros, etc. */ |
280 | initmacros(); | |
281 | ||
282 | /* hostname */ | |
283 | av = myhostname(jbuf, sizeof jbuf); | |
284 | if (jbuf[0] != '\0') | |
285 | { | |
dec0d30e EA |
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; |
f3d8f6d6 | 321 | p = strrchr(*av, '/'); |
26a3626c EA |
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 | 347 | break; |
f3d8f6d6 | 348 | # endif /* DAEMON */ |
75f95954 EA |
349 | case MD_SMTP: |
350 | # ifndef SMTP | |
2e15a2d8 MK |
351 | usrerr("I don't speak SMTP"); |
352 | ExitStat = EX_USAGE; | |
75f95954 | 353 | break; |
f3d8f6d6 | 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 | |
b1e36c23 EA |
435 | case 'p': /* set protocol */ |
436 | p += 2; | |
437 | if (*p == '\0' && ((p = *++av) == NULL || !isdigit(*p))) | |
438 | { | |
439 | usrerr("Bad -p (protocol) flag"); | |
440 | ExitStat = EX_USAGE; | |
441 | av--; | |
442 | break; | |
443 | } | |
af04f6e4 EA |
444 | q = strchr(p, ':'); |
445 | if (q != NULL) | |
446 | *q++ = '\0'; | |
447 | if (*p != '\0') | |
448 | define('r', newstr(p), CurEnv); | |
449 | if (*q != '\0') | |
450 | define('s', newstr(q), CurEnv); | |
b1e36c23 EA |
451 | break; |
452 | ||
ed45aae1 | 453 | case 'q': /* run queue files at intervals */ |
884a20cb | 454 | # ifdef QUEUE |
f2e44ded EA |
455 | if (getuid() != 0) |
456 | { | |
457 | struct stat stbuf; | |
458 | ||
459 | /* check to see if we own the queue directory */ | |
460 | if (stat(QueueDir, &stbuf) < 0) | |
461 | syserr("main: cannot stat %s", QueueDir); | |
462 | if (stbuf.st_uid != getuid()) | |
463 | { | |
464 | /* nope, really a botch */ | |
465 | usrerr("Permission denied"); | |
466 | exit (EX_NOPERM); | |
467 | } | |
908dc8db MK |
468 | } |
469 | (void) unsetenv("HOSTALIASES"); | |
d0a69620 | 470 | FullName = NULL; |
aba51985 | 471 | queuemode = TRUE; |
25b9d645 | 472 | QueueIntvl = convtime(&p[2]); |
f3d8f6d6 | 473 | # else /* QUEUE */ |
2e15a2d8 MK |
474 | usrerr("I don't know about queues"); |
475 | ExitStat = EX_USAGE; | |
f3d8f6d6 | 476 | # endif /* QUEUE */ |
ed45aae1 EA |
477 | break; |
478 | ||
c1e24818 EA |
479 | case 't': /* read recipients from message */ |
480 | GrabTo = TRUE; | |
481 | break; | |
482 | ||
483 | /* compatibility flags */ | |
c1e24818 EA |
484 | case 'c': /* connect to non-local mailers */ |
485 | case 'e': /* error message disposition */ | |
486 | case 'i': /* don't let dot stop me */ | |
487 | case 'm': /* send to me too */ | |
488 | case 'T': /* set timeout interval */ | |
489 | case 'v': /* give blow-by-blow description */ | |
490 | setoption(p[1], &p[2], FALSE, TRUE); | |
35cc3fad EA |
491 | break; |
492 | ||
c1e24818 EA |
493 | case 's': /* save From lines in headers */ |
494 | setoption('f', &p[2], FALSE, TRUE); | |
b3cbe40f | 495 | break; |
26a3626c EA |
496 | |
497 | # ifdef DBM | |
498 | case 'I': /* initialize alias DBM file */ | |
75f95954 | 499 | OpMode = MD_INITALIAS; |
26a3626c | 500 | break; |
ce46a48a EA |
501 | # endif /* DBM */ |
502 | ||
503 | case 'R': /* log raw recipient info */ | |
504 | p += 2; | |
505 | if (*p == '\0' && ((p = *++av) == NULL || *p == '-')) | |
506 | { | |
507 | usrerr("Bad -R flag"); | |
508 | ExitStat = EX_USAGE; | |
509 | av--; | |
510 | break; | |
511 | } | |
512 | RcptLogFile = newstr(p); | |
513 | break; | |
b3cbe40f EA |
514 | } |
515 | } | |
516 | ||
836a1487 EA |
517 | #ifdef NAMED_BIND |
518 | if (tTd(8, 1)) | |
519 | _res.options |= RES_DEBUG; | |
520 | #endif | |
521 | ||
9e3c0a28 | 522 | /* |
2cce0c26 EA |
523 | ** Do basic initialization. |
524 | ** Read system control file. | |
179c1218 | 525 | ** Extract special fields for local use. |
9e3c0a28 EA |
526 | */ |
527 | ||
46f6ec52 | 528 | if (OpMode == MD_FREEZE || readconfig) |
a4076aed | 529 | readcf(ConfFile, safecf, CurEnv); |
22659072 | 530 | |
07c63e56 | 531 | #ifdef SYS5TZ |
ca4d0c0b EA |
532 | /* Enforce use of local time (null string overrides this) */ |
533 | if (TimeZoneSpec == NULL) | |
534 | unsetenv("TZ"); | |
535 | else if (TimeZoneSpec[0] != '\0') | |
536 | { | |
537 | p = xalloc(strlen(TimeZoneSpec) + 4); | |
538 | (void) strcpy(p, "TZ="); | |
539 | (void) strcat(p, TimeZoneSpec); | |
540 | putenv(p); | |
541 | } | |
542 | #endif | |
543 | ||
2281a453 EA |
544 | if (ConfigLevel > MAXCONFIGLEVEL) |
545 | { | |
546 | syserr("Warning: .cf version level (%d) exceeds program functionality (%d)", | |
547 | ConfigLevel, MAXCONFIGLEVEL); | |
548 | } | |
75f95954 | 549 | switch (OpMode) |
acae5a9d | 550 | { |
26a3626c | 551 | case MD_FREEZE: |
a9621daf | 552 | /* this is critical to avoid forgeries of the frozen config */ |
0e306e7f EA |
553 | (void) setgid(getgid()); |
554 | (void) setuid(getuid()); | |
a9621daf EA |
555 | |
556 | /* freeze the configuration */ | |
8fe4fb9b | 557 | freeze(FreezeFile); |
acae5a9d | 558 | exit(EX_OK); |
26a3626c EA |
559 | |
560 | case MD_INITALIAS: | |
561 | Verbose = TRUE; | |
562 | break; | |
13dfebea EA |
563 | |
564 | case MD_DAEMON: | |
565 | /* remove things that don't make sense in daemon mode */ | |
566 | FullName = NULL; | |
567 | break; | |
acae5a9d | 568 | } |
179c1218 | 569 | |
6130649c EA |
570 | /* do heuristic mode adjustment */ |
571 | if (Verbose) | |
75f95954 EA |
572 | { |
573 | /* turn off noconnect option */ | |
574 | setoption('c', "F", TRUE, FALSE); | |
575 | ||
576 | /* turn on interactive delivery */ | |
577 | setoption('d', "", TRUE, FALSE); | |
578 | } | |
6130649c | 579 | |
179c1218 | 580 | /* our name for SMTP codes */ |
a73ae8ac | 581 | expand("\001j", jbuf, &jbuf[sizeof jbuf - 1], CurEnv); |
57c97d4a | 582 | MyHostName = jbuf; |
d6a28dd8 | 583 | |
179c1218 EA |
584 | /* the indices of local and program mailers */ |
585 | st = stab("local", ST_MAILER, ST_FIND); | |
586 | if (st == NULL) | |
587 | syserr("No local mailer defined"); | |
588 | else | |
589 | LocalMailer = st->s_mailer; | |
590 | st = stab("prog", ST_MAILER, ST_FIND); | |
591 | if (st == NULL) | |
592 | syserr("No prog mailer defined"); | |
593 | else | |
594 | ProgMailer = st->s_mailer; | |
595 | ||
6bbaf971 EA |
596 | /* operate in queue directory */ |
597 | if (chdir(QueueDir) < 0) | |
598 | { | |
599 | syserr("cannot chdir(%s)", QueueDir); | |
600 | exit(EX_SOFTWARE); | |
601 | } | |
602 | ||
64912e7e | 603 | /* |
55f0da62 | 604 | ** Do operation-mode-dependent initialization. |
64912e7e EA |
605 | */ |
606 | ||
55f0da62 | 607 | switch (OpMode) |
64912e7e | 608 | { |
55f0da62 EA |
609 | case MD_PRINT: |
610 | /* print the queue */ | |
74f37936 | 611 | #ifdef QUEUE |
64912e7e EA |
612 | dropenvelope(CurEnv); |
613 | printqueue(); | |
614 | exit(EX_OK); | |
f3d8f6d6 | 615 | #else /* QUEUE */ |
74f37936 EA |
616 | usrerr("No queue to print"); |
617 | finis(); | |
f3d8f6d6 | 618 | #endif /* QUEUE */ |
8acb5142 | 619 | |
55f0da62 EA |
620 | case MD_INITALIAS: |
621 | /* initialize alias database */ | |
a4076aed | 622 | initaliases(AliasFile, TRUE, CurEnv); |
f4dbf345 | 623 | exit(EX_OK); |
cdb17311 | 624 | |
55f0da62 EA |
625 | case MD_DAEMON: |
626 | /* don't open alias database -- done in srvrsmtp */ | |
627 | break; | |
628 | ||
629 | default: | |
630 | /* open the alias database */ | |
a4076aed | 631 | initaliases(AliasFile, FALSE, CurEnv); |
55f0da62 EA |
632 | break; |
633 | } | |
634 | ||
9678c96d | 635 | if (tTd(0, 15)) |
9c6d4c70 | 636 | { |
f6a0cc15 | 637 | /* print configuration table (or at least part of it) */ |
9c6d4c70 EA |
638 | printrules(); |
639 | for (i = 0; i < MAXMAILERS; i++) | |
640 | { | |
641 | register struct mailer *m = Mailer[i]; | |
1dbda134 | 642 | int j; |
9c6d4c70 EA |
643 | |
644 | if (m == NULL) | |
645 | continue; | |
97ad25b6 EA |
646 | printf("mailer %d (%s): P=%s S=%d R=%d M=%ld F=", i, m->m_name, |
647 | m->m_mailer, m->m_s_rwset, m->m_r_rwset, | |
648 | m->m_maxsize); | |
1dbda134 EA |
649 | for (j = '\0'; j <= '\177'; j++) |
650 | if (bitnset(j, m->m_flags)) | |
0e306e7f | 651 | (void) putchar(j); |
1dbda134 | 652 | printf(" E="); |
b3ef02a2 | 653 | xputs(m->m_eol); |
72f91c2e EA |
654 | if (m->m_argv != NULL) |
655 | { | |
656 | char **a = m->m_argv; | |
657 | ||
658 | printf(" A="); | |
659 | while (*a != NULL) | |
660 | { | |
661 | if (a != m->m_argv) | |
662 | printf(" "); | |
663 | xputs(*a++); | |
664 | } | |
665 | } | |
b3ef02a2 | 666 | printf("\n"); |
9c6d4c70 EA |
667 | } |
668 | } | |
9c6d4c70 | 669 | |
be2fcca9 EA |
670 | /* |
671 | ** Switch to the main envelope. | |
672 | */ | |
673 | ||
674 | CurEnv = newenvelope(&MainEnvelope); | |
e6f08ab1 | 675 | MainEnvelope.e_flags = BlankEnvelope.e_flags; |
be2fcca9 | 676 | |
cf69a203 EA |
677 | /* |
678 | ** If test mode, read addresses from stdin and process. | |
679 | */ | |
680 | ||
75f95954 | 681 | if (OpMode == MD_TEST) |
cf69a203 | 682 | { |
dab2b390 | 683 | bool terminal = isatty(fileno(stdin)); |
cf69a203 EA |
684 | char buf[MAXLINE]; |
685 | ||
dab2b390 EA |
686 | if (terminal) |
687 | { | |
688 | printf("ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n"); | |
689 | printf("Enter <ruleset> <address>\n"); | |
690 | } | |
cf69a203 EA |
691 | for (;;) |
692 | { | |
693 | register char **pvp; | |
50435450 | 694 | char *q; |
50435450 | 695 | extern char *DelimChar; |
cf69a203 | 696 | |
dab2b390 EA |
697 | if (terminal) |
698 | printf("> "); | |
0e306e7f | 699 | (void) fflush(stdout); |
cf69a203 EA |
700 | if (fgets(buf, sizeof buf, stdin) == NULL) |
701 | finis(); | |
dab2b390 EA |
702 | if (!terminal) |
703 | printf("> %s", buf); | |
704 | if (buf[0] == '#') | |
705 | continue; | |
f90b4150 | 706 | for (p = buf; isspace(*p); p++) |
cf69a203 | 707 | continue; |
ecfd2c8e EA |
708 | q = p; |
709 | while (*p != '\0' && !isspace(*p)) | |
710 | p++; | |
cf69a203 EA |
711 | if (*p == '\0') |
712 | continue; | |
50435450 EA |
713 | *p = '\0'; |
714 | do | |
ecfd2c8e | 715 | { |
217a0102 EA |
716 | extern char **prescan(); |
717 | char pvpbuf[PSBUFSIZE]; | |
718 | ||
719 | pvp = prescan(++p, ',', pvpbuf); | |
50435450 | 720 | if (pvp == NULL) |
ecfd2c8e | 721 | continue; |
50435450 EA |
722 | p = q; |
723 | while (*p != '\0') | |
724 | { | |
725 | rewrite(pvp, atoi(p)); | |
726 | while (*p != '\0' && *p++ != ',') | |
727 | continue; | |
728 | } | |
729 | } while (*(p = DelimChar) != '\0'); | |
cf69a203 EA |
730 | } |
731 | } | |
732 | ||
e3cd595c EA |
733 | # ifdef QUEUE |
734 | /* | |
735 | ** If collecting stuff from the queue, go start doing that. | |
736 | */ | |
737 | ||
7b21425b | 738 | if (queuemode && OpMode != MD_DAEMON && QueueIntvl == 0) |
e3cd595c | 739 | { |
ca4d0c0b | 740 | runqueue(FALSE); |
e3cd595c EA |
741 | finis(); |
742 | } | |
f3d8f6d6 | 743 | # endif /* QUEUE */ |
e3cd595c | 744 | |
f6a0cc15 EA |
745 | /* |
746 | ** If a daemon, wait for a request. | |
747 | ** getrequests will always return in a child. | |
25b9d645 | 748 | ** If we should also be processing the queue, start |
19147b2d EA |
749 | ** doing it in background. |
750 | ** We check for any errors that might have happened | |
751 | ** during startup. | |
f6a0cc15 EA |
752 | */ |
753 | ||
75f95954 | 754 | if (OpMode == MD_DAEMON || QueueIntvl != 0) |
25b9d645 | 755 | { |
9678c96d | 756 | if (!tTd(0, 1)) |
58b27aa4 | 757 | { |
fcdf8200 | 758 | /* put us in background */ |
58b27aa4 EA |
759 | i = fork(); |
760 | if (i < 0) | |
761 | syserr("daemon: cannot fork"); | |
762 | if (i != 0) | |
763 | exit(0); | |
fcdf8200 EA |
764 | |
765 | /* get our pid right */ | |
d9162460 | 766 | MotherPid = getpid(); |
fcdf8200 EA |
767 | |
768 | /* disconnect from our controlling tty */ | |
d188728a | 769 | disconnect(TRUE); |
58b27aa4 | 770 | } |
7338e3d4 | 771 | |
25b9d645 EA |
772 | # ifdef QUEUE |
773 | if (queuemode) | |
f309127e | 774 | { |
ca4d0c0b | 775 | runqueue(TRUE); |
75f95954 | 776 | if (OpMode != MD_DAEMON) |
f309127e EA |
777 | for (;;) |
778 | pause(); | |
779 | } | |
f3d8f6d6 | 780 | # endif /* QUEUE */ |
7338e3d4 EA |
781 | dropenvelope(CurEnv); |
782 | ||
783 | #ifdef DAEMON | |
f6a0cc15 | 784 | getrequests(); |
2a16bae3 EA |
785 | |
786 | /* at this point we are in a child: reset state */ | |
75f95954 | 787 | OpMode = MD_SMTP; |
7338e3d4 | 788 | (void) newenvelope(CurEnv); |
912acb74 | 789 | openxscript(CurEnv); |
f3d8f6d6 | 790 | #endif /* DAEMON */ |
7338e3d4 | 791 | } |
88039044 EA |
792 | |
793 | # ifdef SMTP | |
794 | /* | |
795 | ** If running SMTP protocol, start collecting and executing | |
796 | ** commands. This will never return. | |
797 | */ | |
798 | ||
75f95954 | 799 | if (OpMode == MD_SMTP) |
a4076aed | 800 | smtp(CurEnv); |
f3d8f6d6 | 801 | # endif /* SMTP */ |
88039044 | 802 | |
f6a0cc15 | 803 | /* |
e6f08ab1 | 804 | ** Do basic system initialization and set the sender |
f6a0cc15 EA |
805 | */ |
806 | ||
a4076aed | 807 | initsys(CurEnv); |
b5958391 | 808 | setsender(from, CurEnv); |
a9e0e597 | 809 | |
0e1aa71e | 810 | if (*av == NULL && !GrabTo) |
e863b1fa | 811 | { |
2e3062fe EA |
812 | usrerr("Recipient names must be specified"); |
813 | ||
814 | /* collect body for UUCP return */ | |
815 | if (OpMode != MD_VERIFY) | |
a4076aed | 816 | collect(FALSE, CurEnv); |
e863b1fa EA |
817 | finis(); |
818 | } | |
75f95954 EA |
819 | if (OpMode == MD_VERIFY) |
820 | SendMode = SM_VERIFY; | |
b3cbe40f | 821 | |
b3cbe40f | 822 | /* |
d6b27179 | 823 | ** Scan argv and deliver the message to everyone. |
b3cbe40f EA |
824 | */ |
825 | ||
a4076aed | 826 | sendtoargv(av, CurEnv); |
b3cbe40f | 827 | |
72e9b3cc | 828 | /* if we have had errors sofar, arrange a meaningful exit stat */ |
d916f0ca | 829 | if (Errors > 0 && ExitStat == EX_OK) |
a4b004a6 | 830 | ExitStat = EX_USAGE; |
a4b004a6 | 831 | |
dc39c568 EA |
832 | /* |
833 | ** Read the input mail. | |
834 | */ | |
835 | ||
2654b031 | 836 | CurEnv->e_to = NULL; |
75f95954 | 837 | if (OpMode != MD_VERIFY || GrabTo) |
a4076aed | 838 | collect(FALSE, CurEnv); |
d829793b | 839 | errno = 0; |
35cc3fad | 840 | |
4e1f4d4b | 841 | /* collect statistics */ |
7338e3d4 EA |
842 | if (OpMode != MD_VERIFY) |
843 | markstats(CurEnv, (ADDRESS *) NULL); | |
b3cbe40f | 844 | |
9678c96d | 845 | if (tTd(1, 1)) |
2654b031 | 846 | printf("From person = \"%s\"\n", CurEnv->e_from.q_paddr); |
d6b27179 | 847 | |
b3cbe40f EA |
848 | /* |
849 | ** Actually send everything. | |
d6b27179 | 850 | ** If verifying, just ack. |
b3cbe40f EA |
851 | */ |
852 | ||
7338e3d4 EA |
853 | CurEnv->e_from.q_flags |= QDONTSEND; |
854 | CurEnv->e_to = NULL; | |
f7e74083 | 855 | sendall(CurEnv, SM_DEFAULT); |
b3cbe40f EA |
856 | |
857 | /* | |
858 | ** All done. | |
859 | */ | |
860 | ||
861 | finis(); | |
862 | } | |
863 | \f/* | |
864 | ** FINIS -- Clean up and exit. | |
865 | ** | |
b3cbe40f EA |
866 | ** Parameters: |
867 | ** none | |
868 | ** | |
869 | ** Returns: | |
870 | ** never | |
871 | ** | |
872 | ** Side Effects: | |
96faada8 | 873 | ** exits sendmail |
b3cbe40f EA |
874 | */ |
875 | ||
876 | finis() | |
877 | { | |
9678c96d | 878 | if (tTd(2, 1)) |
e6f08ab1 | 879 | printf("\n====finis: stat %d e_flags %o\n", ExitStat, CurEnv->e_flags); |
aba51985 | 880 | |
7338e3d4 | 881 | /* clean up temp files */ |
912acb74 | 882 | CurEnv->e_to = NULL; |
e6f08ab1 | 883 | dropenvelope(CurEnv); |
b3cbe40f | 884 | |
f2e44ded EA |
885 | /* flush any cached connections */ |
886 | mci_flush(); | |
887 | ||
7338e3d4 EA |
888 | /* post statistics */ |
889 | poststats(StatFile); | |
68f0b54c | 890 | |
7338e3d4 | 891 | /* and exit */ |
36a4e219 EA |
892 | # ifdef LOG |
893 | if (LogLevel > 11) | |
894 | syslog(LOG_DEBUG, "finis, pid=%d", getpid()); | |
f3d8f6d6 | 895 | # endif /* LOG */ |
c8ec8736 EA |
896 | if (ExitStat == EX_TEMPFAIL) |
897 | ExitStat = EX_OK; | |
b3cbe40f EA |
898 | exit(ExitStat); |
899 | } | |
900 | \f/* | |
6e2f38be EA |
901 | ** INTSIG -- clean up on interrupt |
902 | ** | |
7338e3d4 EA |
903 | ** This just arranges to exit. It pessimises in that it |
904 | ** may resend a message. | |
6e2f38be EA |
905 | ** |
906 | ** Parameters: | |
907 | ** none. | |
908 | ** | |
909 | ** Returns: | |
910 | ** none. | |
911 | ** | |
912 | ** Side Effects: | |
7338e3d4 | 913 | ** Unlocks the current job. |
6e2f38be EA |
914 | */ |
915 | ||
0df908a9 | 916 | void |
6e2f38be EA |
917 | intsig() |
918 | { | |
7338e3d4 EA |
919 | FileName = NULL; |
920 | unlockqueue(CurEnv); | |
921 | exit(EX_OK); | |
6e2f38be EA |
922 | } |
923 | \f/* | |
721fad23 EA |
924 | ** INITMACROS -- initialize the macro system |
925 | ** | |
926 | ** This just involves defining some macros that are actually | |
927 | ** used internally as metasymbols to be themselves. | |
928 | ** | |
929 | ** Parameters: | |
930 | ** none. | |
931 | ** | |
932 | ** Returns: | |
933 | ** none. | |
934 | ** | |
935 | ** Side Effects: | |
936 | ** initializes several macros to be themselves. | |
937 | */ | |
938 | ||
9dbc8d99 EA |
939 | struct metamac MetaMacros[] = |
940 | { | |
eca244ca | 941 | /* LHS pattern matching characters */ |
42fa5d67 EA |
942 | '*', MATCHZANY, '+', MATCHANY, '-', MATCHONE, |
943 | '=', MATCHCLASS, '~', MATCHNCLASS, | |
721fad23 EA |
944 | |
945 | /* these are RHS metasymbols */ | |
42fa5d67 EA |
946 | '#', CANONNET, '@', CANONHOST, ':', CANONUSER, |
947 | '>', CALLSUBR, | |
41173b8f | 948 | '{', MATCHLOOKUP, '}', MATCHELOOKUP, |
721fad23 | 949 | |
eca244ca | 950 | /* the conditional operations */ |
42fa5d67 | 951 | '?', CONDIF, '|', CONDELSE, '.', CONDFI, |
9dbc8d99 | 952 | |
eca244ca | 953 | /* and finally the hostname lookup characters */ |
42fa5d67 EA |
954 | '[', HOSTBEGIN, ']', HOSTEND, |
955 | '(', LOOKUPBEGIN, ')', LOOKUPEND, | |
eca244ca | 956 | |
9dbc8d99 | 957 | '\0' |
721fad23 EA |
958 | }; |
959 | ||
960 | initmacros() | |
961 | { | |
9dbc8d99 EA |
962 | register struct metamac *m; |
963 | char buf[5]; | |
964 | register int c; | |
721fad23 | 965 | |
9dbc8d99 EA |
966 | for (m = MetaMacros; m->metaname != '\0'; m++) |
967 | { | |
968 | buf[0] = m->metaval; | |
969 | buf[1] = '\0'; | |
7338e3d4 | 970 | define(m->metaname, newstr(buf), CurEnv); |
9dbc8d99 EA |
971 | } |
972 | buf[0] = MATCHREPL; | |
973 | buf[2] = '\0'; | |
974 | for (c = '0'; c <= '9'; c++) | |
975 | { | |
976 | buf[1] = c; | |
7338e3d4 | 977 | define(c, newstr(buf), CurEnv); |
9dbc8d99 | 978 | } |
721fad23 | 979 | } |
dd1fe05b | 980 | \f/* |
acae5a9d EA |
981 | ** FREEZE -- freeze BSS & allocated memory |
982 | ** | |
983 | ** This will be used to efficiently load the configuration file. | |
984 | ** | |
985 | ** Parameters: | |
8fe4fb9b | 986 | ** freezefile -- the name of the file to freeze to. |
acae5a9d EA |
987 | ** |
988 | ** Returns: | |
989 | ** none. | |
990 | ** | |
991 | ** Side Effects: | |
8fe4fb9b | 992 | ** Writes BSS and malloc'ed memory to freezefile |
acae5a9d EA |
993 | */ |
994 | ||
7338e3d4 | 995 | union frz |
acae5a9d | 996 | { |
7338e3d4 EA |
997 | char frzpad[BUFSIZ]; /* insure we are on a BUFSIZ boundary */ |
998 | struct | |
999 | { | |
1000 | time_t frzstamp; /* timestamp on this freeze */ | |
1001 | char *frzbrk; /* the current break */ | |
2e3062fe EA |
1002 | char *frzedata; /* address of edata */ |
1003 | char *frzend; /* address of end */ | |
7338e3d4 EA |
1004 | char frzver[252]; /* sendmail version */ |
1005 | } frzinfo; | |
acae5a9d EA |
1006 | }; |
1007 | ||
8fe4fb9b EA |
1008 | freeze(freezefile) |
1009 | char *freezefile; | |
acae5a9d EA |
1010 | { |
1011 | int f; | |
7338e3d4 | 1012 | union frz fhdr; |
2e3062fe | 1013 | extern char edata, end; |
acae5a9d | 1014 | extern char *sbrk(); |
912acb74 | 1015 | extern char Version[]; |
acae5a9d | 1016 | |
8fe4fb9b | 1017 | if (freezefile == NULL) |
acae5a9d EA |
1018 | return; |
1019 | ||
1020 | /* try to open the freeze file */ | |
8fe4fb9b | 1021 | f = creat(freezefile, FileMode); |
acae5a9d EA |
1022 | if (f < 0) |
1023 | { | |
2e15a2d8 | 1024 | syserr("Cannot freeze %s", freezefile); |
acae5a9d EA |
1025 | errno = 0; |
1026 | return; | |
1027 | } | |
1028 | ||
1029 | /* build the freeze header */ | |
7338e3d4 EA |
1030 | fhdr.frzinfo.frzstamp = curtime(); |
1031 | fhdr.frzinfo.frzbrk = sbrk(0); | |
2e3062fe EA |
1032 | fhdr.frzinfo.frzedata = &edata; |
1033 | fhdr.frzinfo.frzend = &end; | |
0e306e7f | 1034 | (void) strcpy(fhdr.frzinfo.frzver, Version); |
acae5a9d EA |
1035 | |
1036 | /* write out the freeze header */ | |
611b763d | 1037 | if (write(f, (char *) &fhdr, sizeof fhdr) != sizeof fhdr || |
34fe0a9b EA |
1038 | write(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
1039 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
7338e3d4 | 1040 | { |
2e15a2d8 | 1041 | syserr("Cannot freeze %s", freezefile); |
7338e3d4 | 1042 | } |
acae5a9d EA |
1043 | |
1044 | /* fine, clean up */ | |
1045 | (void) close(f); | |
1046 | } | |
1047 | \f/* | |
1048 | ** THAW -- read in the frozen configuration file. | |
1049 | ** | |
1050 | ** Parameters: | |
8fe4fb9b | 1051 | ** freezefile -- the name of the file to thaw from. |
acae5a9d EA |
1052 | ** |
1053 | ** Returns: | |
1054 | ** TRUE if it successfully read the freeze file. | |
1055 | ** FALSE otherwise. | |
1056 | ** | |
1057 | ** Side Effects: | |
8fe4fb9b | 1058 | ** reads freezefile in to BSS area. |
acae5a9d EA |
1059 | */ |
1060 | ||
8fe4fb9b EA |
1061 | thaw(freezefile) |
1062 | char *freezefile; | |
acae5a9d EA |
1063 | { |
1064 | int f; | |
ccfed53c | 1065 | register char *p; |
7338e3d4 | 1066 | union frz fhdr; |
ccfed53c | 1067 | char hbuf[60]; |
a59237a4 | 1068 | extern char edata, end; |
912acb74 | 1069 | extern char Version[]; |
17a67c62 | 1070 | extern caddr_t brk(); |
ccfed53c EA |
1071 | extern char **myhostname(); |
1072 | extern char *macvalue(); | |
acae5a9d | 1073 | |
8fe4fb9b | 1074 | if (freezefile == NULL) |
acae5a9d EA |
1075 | return (FALSE); |
1076 | ||
1077 | /* open the freeze file */ | |
8fe4fb9b | 1078 | f = open(freezefile, 0); |
acae5a9d EA |
1079 | if (f < 0) |
1080 | { | |
1081 | errno = 0; | |
1082 | return (FALSE); | |
1083 | } | |
1084 | ||
1085 | /* read in the header */ | |
07adc4f5 RA |
1086 | if (read(f, (char *) &fhdr, sizeof fhdr) < sizeof fhdr) |
1087 | { | |
db281fbf | 1088 | syslog(LOG_WARNING, "Cannot read frozen config file"); |
07adc4f5 RA |
1089 | (void) close(f); |
1090 | return (FALSE); | |
1091 | } | |
db281fbf | 1092 | if (fhdr.frzinfo.frzedata != &edata || |
2e3062fe | 1093 | fhdr.frzinfo.frzend != &end || |
7338e3d4 | 1094 | strcmp(fhdr.frzinfo.frzver, Version) != 0) |
acae5a9d | 1095 | { |
07adc4f5 | 1096 | syslog(LOG_WARNING, "Wrong version of frozen config file"); |
acae5a9d EA |
1097 | (void) close(f); |
1098 | return (FALSE); | |
1099 | } | |
1100 | ||
1101 | /* arrange to have enough space */ | |
17a67c62 | 1102 | if (brk(fhdr.frzinfo.frzbrk) == (caddr_t) -1) |
acae5a9d | 1103 | { |
7338e3d4 | 1104 | syserr("Cannot break to %x", fhdr.frzinfo.frzbrk); |
acae5a9d EA |
1105 | (void) close(f); |
1106 | return (FALSE); | |
1107 | } | |
1108 | ||
1109 | /* now read in the freeze file */ | |
34fe0a9b EA |
1110 | if (read(f, (char *) &edata, (int) (fhdr.frzinfo.frzbrk - &edata)) != |
1111 | (int) (fhdr.frzinfo.frzbrk - &edata)) | |
acae5a9d | 1112 | { |
07adc4f5 | 1113 | syserr("Cannot read frozen config file"); |
acae5a9d | 1114 | /* oops! we have trashed memory..... */ |
0e306e7f | 1115 | (void) write(2, "Cannot read freeze file\n", 24); |
7338e3d4 | 1116 | _exit(EX_SOFTWARE); |
acae5a9d EA |
1117 | } |
1118 | ||
1119 | (void) close(f); | |
ccfed53c EA |
1120 | |
1121 | /* verify that the host name was correct on the freeze */ | |
1122 | (void) myhostname(hbuf, sizeof hbuf); | |
1123 | p = macvalue('w', CurEnv); | |
1124 | if (p == NULL) | |
1125 | p = ""; | |
1126 | if (strcmp(hbuf, macvalue('w', CurEnv)) == 0) | |
1127 | return (TRUE); | |
1128 | syslog(LOG_WARNING, "Hostname changed since freeze (%s => %s)", | |
1129 | p, hbuf); | |
1130 | return (FALSE); | |
acae5a9d | 1131 | } |
813d8709 EA |
1132 | \f/* |
1133 | ** DISCONNECT -- remove our connection with any foreground process | |
1134 | ** | |
1135 | ** Parameters: | |
d188728a EA |
1136 | ** fulldrop -- if set, we should also drop the controlling |
1137 | ** TTY if possible -- this should only be done when | |
1138 | ** setting up the daemon since otherwise UUCP can | |
1139 | ** leave us trying to open a dialin, and we will | |
1140 | ** wait for the carrier. | |
813d8709 EA |
1141 | ** |
1142 | ** Returns: | |
1143 | ** none | |
1144 | ** | |
1145 | ** Side Effects: | |
1146 | ** Trys to insure that we are immune to vagaries of | |
1147 | ** the controlling tty. | |
1148 | */ | |
1149 | ||
d188728a EA |
1150 | disconnect(fulldrop) |
1151 | bool fulldrop; | |
813d8709 EA |
1152 | { |
1153 | int fd; | |
1154 | ||
e6f08ab1 | 1155 | if (tTd(52, 1)) |
b9accadd EA |
1156 | printf("disconnect: In %d Out %d\n", fileno(InChannel), |
1157 | fileno(OutChannel)); | |
e6f08ab1 | 1158 | if (tTd(52, 5)) |
813d8709 | 1159 | { |
e6f08ab1 EA |
1160 | printf("don't\n"); |
1161 | return; | |
813d8709 | 1162 | } |
813d8709 EA |
1163 | |
1164 | /* be sure we don't get nasty signals */ | |
0e306e7f EA |
1165 | (void) signal(SIGHUP, SIG_IGN); |
1166 | (void) signal(SIGINT, SIG_IGN); | |
1167 | (void) signal(SIGQUIT, SIG_IGN); | |
813d8709 EA |
1168 | |
1169 | /* we can't communicate with our caller, so.... */ | |
7338e3d4 EA |
1170 | HoldErrs = TRUE; |
1171 | ErrorMode = EM_MAIL; | |
813d8709 EA |
1172 | Verbose = FALSE; |
1173 | ||
1174 | /* all input from /dev/null */ | |
813d8709 | 1175 | if (InChannel != stdin) |
b9accadd EA |
1176 | { |
1177 | (void) fclose(InChannel); | |
1178 | InChannel = stdin; | |
1179 | } | |
1180 | (void) freopen("/dev/null", "r", stdin); | |
813d8709 EA |
1181 | |
1182 | /* output to the transcript */ | |
b9accadd | 1183 | if (OutChannel != stdout) |
813d8709 | 1184 | { |
b9accadd EA |
1185 | (void) fclose(OutChannel); |
1186 | OutChannel = stdout; | |
813d8709 | 1187 | } |
912acb74 EA |
1188 | if (CurEnv->e_xfp == NULL) |
1189 | CurEnv->e_xfp = fopen("/dev/null", "w"); | |
b9accadd EA |
1190 | (void) fflush(stdout); |
1191 | (void) close(1); | |
1192 | (void) close(2); | |
912acb74 | 1193 | while ((fd = dup(fileno(CurEnv->e_xfp))) < 2 && fd > 0) |
b9accadd | 1194 | continue; |
813d8709 | 1195 | |
e6f08ab1 | 1196 | /* drop our controlling TTY completely if possible */ |
d188728a | 1197 | if (fulldrop) |
e6f08ab1 | 1198 | { |
5229f34d | 1199 | (void) setsid(); |
afe907a4 | 1200 | #ifdef TIOCNOTTY |
d188728a EA |
1201 | fd = open("/dev/tty", 2); |
1202 | if (fd >= 0) | |
1203 | { | |
17a67c62 | 1204 | (void) ioctl(fd, (int) TIOCNOTTY, (char *) 0); |
d188728a EA |
1205 | (void) close(fd); |
1206 | } | |
17a67c62 | 1207 | (void) setpgrp(0, 0); |
afe907a4 | 1208 | #endif /* TIOCNOTTY */ |
70faa7c8 | 1209 | errno = 0; |
e6f08ab1 | 1210 | } |
e6f08ab1 | 1211 | |
813d8709 EA |
1212 | # ifdef LOG |
1213 | if (LogLevel > 11) | |
1214 | syslog(LOG_DEBUG, "in background, pid=%d", getpid()); | |
f3d8f6d6 | 1215 | # endif /* LOG */ |
813d8709 EA |
1216 | |
1217 | errno = 0; | |
1218 | } |