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sendmail: Update vendor branch to v8.14.4
[dragonfly.git] / contrib / sendmail-8.14 / sendmail / main.c
blob1bbb070dace64daf692da9b843d6a8887597373e
1 /*
2 * Copyright (c) 1998-2006, 2008, 2009 Sendmail, Inc. and its suppliers.
3 * All rights reserved.
4 * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.
5 * Copyright (c) 1988, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * By using this file, you agree to the terms and conditions set
9 * forth in the LICENSE file which can be found at the top level of
10 * the sendmail distribution.
11 *
12 */
13
14 #define _DEFINE
15 #include <sendmail.h>
16 #include <sm/sendmail.h>
17 #include <sm/xtrap.h>
18 #include <sm/signal.h>
19
20 #ifndef lint
21 SM_UNUSED(static char copyright[]) =
22 "@(#) Copyright (c) 1998-2003 Sendmail, Inc. and its suppliers.\n\
23 All rights reserved.\n\
24 Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.\n\
25 Copyright (c) 1988, 1993\n\
26 The Regents of the University of California. All rights reserved.\n";
27 #endif /* ! lint */
28
29 SM_RCSID("@(#)$Id: main.c,v 8.971 2009/12/18 17:08:01 ca Exp $")
30
31
32 #if NETINET || NETINET6
33 # include <arpa/inet.h>
34 #endif /* NETINET || NETINET6 */
35
36 /* for getcfname() */
37 #include <sendmail/pathnames.h>
38
39 static SM_DEBUG_T
40 DebugNoPRestart = SM_DEBUG_INITIALIZER("no_persistent_restart",
41 "@(#)$Debug: no_persistent_restart - don't restart, log only $");
42
43 static void dump_class __P((STAB *, int));
44 static void obsolete __P((char **));
45 static void testmodeline __P((char *, ENVELOPE *));
46 static char *getextenv __P((const char *));
47 static void sm_printoptions __P((char **));
48 static SIGFUNC_DECL intindebug __P((int));
49 static SIGFUNC_DECL sighup __P((int));
50 static SIGFUNC_DECL sigpipe __P((int));
51 static SIGFUNC_DECL sigterm __P((int));
52 #ifdef SIGUSR1
53 static SIGFUNC_DECL sigusr1 __P((int));
54 #endif /* SIGUSR1 */
55
56 /*
57 ** SENDMAIL -- Post mail to a set of destinations.
58 **
59 ** This is the basic mail router. All user mail programs should
60 ** call this routine to actually deliver mail. Sendmail in
61 ** turn calls a bunch of mail servers that do the real work of
62 ** delivering the mail.
63 **
64 ** Sendmail is driven by settings read in from /etc/mail/sendmail.cf
65 ** (read by readcf.c).
66 **
67 ** Usage:
68 ** /usr/lib/sendmail [flags] addr ...
69 **
70 ** See the associated documentation for details.
71 **
72 ** Authors:
73 ** Eric Allman, UCB/INGRES (until 10/81).
74 ** Britton-Lee, Inc., purveyors of fine
75 ** database computers (11/81 - 10/88).
76 ** International Computer Science Institute
77 ** (11/88 - 9/89).
78 ** UCB/Mammoth Project (10/89 - 7/95).
79 ** InReference, Inc. (8/95 - 1/97).
80 ** Sendmail, Inc. (1/98 - present).
81 ** The support of my employers is gratefully acknowledged.
82 ** Few of them (Britton-Lee in particular) have had
83 ** anything to gain from my involvement in this project.
84 **
85 ** Gregory Neil Shapiro,
86 ** Worcester Polytechnic Institute (until 3/98).
87 ** Sendmail, Inc. (3/98 - present).
88 **
89 ** Claus Assmann,
90 ** Sendmail, Inc. (12/98 - present).
91 */
92
93 char *FullName; /* sender's full name */
94 ENVELOPE BlankEnvelope; /* a "blank" envelope */
95 static ENVELOPE MainEnvelope; /* the envelope around the basic letter */
96 ADDRESS NullAddress = /* a null address */
97 { "", "", NULL, "" };
98 char *CommandLineArgs; /* command line args for pid file */
99 bool Warn_Q_option = false; /* warn about Q option use */
100 static int MissingFds = 0; /* bit map of fds missing on startup */
101 char *Mbdb = "pw"; /* mailbox database defaults to /etc/passwd */
102
103 #ifdef NGROUPS_MAX
104 GIDSET_T InitialGidSet[NGROUPS_MAX];
105 #endif /* NGROUPS_MAX */
106
107 #define MAXCONFIGLEVEL 10 /* highest config version level known */
108
109 #if SASL
110 static sasl_callback_t srvcallbacks[] =
111 {
112 { SASL_CB_VERIFYFILE, &safesaslfile, NULL },
113 { SASL_CB_PROXY_POLICY, &proxy_policy, NULL },
114 { SASL_CB_LIST_END, NULL, NULL }
115 };
116 #endif /* SASL */
117
118 unsigned int SubmitMode;
119 int SyslogPrefixLen; /* estimated length of syslog prefix */
120 #define PIDLEN 6 /* pid length for computing SyslogPrefixLen */
121 #ifndef SL_FUDGE
122 # define SL_FUDGE 10 /* fudge offset for SyslogPrefixLen */
123 #endif /* ! SL_FUDGE */
124 #define SLDLL 8 /* est. length of default syslog label */
125
126
127 /* Some options are dangerous to allow users to use in non-submit mode */
128 #define CHECK_AGAINST_OPMODE(cmd) \
129 { \
130 if (extraprivs && \
131 OpMode != MD_DELIVER && OpMode != MD_SMTP && \
132 OpMode != MD_ARPAFTP && OpMode != MD_CHECKCONFIG && \
133 OpMode != MD_VERIFY && OpMode != MD_TEST) \
134 { \
135 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \
136 "WARNING: Ignoring submission mode -%c option (not in submission mode)\n", \
137 (cmd)); \
138 break; \
139 } \
140 if (extraprivs && queuerun) \
141 { \
142 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \
143 "WARNING: Ignoring submission mode -%c option with -q\n", \
144 (cmd)); \
145 break; \
146 } \
147 }
148
149 int
150 main(argc, argv, envp)
151 int argc;
152 char **argv;
153 char **envp;
154 {
155 register char *p;
156 char **av;
157 extern char Version[];
158 char *ep, *from;
159 STAB *st;
160 register int i;
161 int j;
162 int dp;
163 int fill_errno;
164 int qgrp = NOQGRP; /* queue group to process */
165 bool safecf = true;
166 BITMAP256 *p_flags = NULL; /* daemon flags */
167 bool warn_C_flag = false;
168 bool auth = true; /* whether to set e_auth_param */
169 char warn_f_flag = '\0';
170 bool run_in_foreground = false; /* -bD mode */
171 bool queuerun = false, debug = false;
172 struct passwd *pw;
173 struct hostent *hp;
174 char *nullserver = NULL;
175 char *authinfo = NULL;
176 char *sysloglabel = NULL; /* label for syslog */
177 char *conffile = NULL; /* name of .cf file */
178 char *queuegroup = NULL; /* queue group to process */
179 char *quarantining = NULL; /* quarantine queue items? */
180 bool extraprivs;
181 bool forged, negate;
182 bool queuepersistent = false; /* queue runner process runs forever */
183 bool foregroundqueue = false; /* queue run in foreground */
184 bool save_val; /* to save some bool var. */
185 int cftype; /* which cf file to use? */
186 SM_FILE_T *smdebug;
187 static time_t starttime = 0; /* when was process started */
188 struct stat traf_st; /* for TrafficLog FIFO check */
189 char buf[MAXLINE];
190 char jbuf[MAXHOSTNAMELEN]; /* holds MyHostName */
191 static char rnamebuf[MAXNAME]; /* holds RealUserName */
192 char *emptyenviron[1];
193 #if STARTTLS
194 bool tls_ok;
195 #endif /* STARTTLS */
196 QUEUE_CHAR *new;
197 ENVELOPE *e;
198 extern int DtableSize;
199 extern int optind;
200 extern int opterr;
201 extern char *optarg;
202 extern char **environ;
203 #if SASL
204 extern void sm_sasl_init __P((void));
205 #endif /* SASL */
206
207 #if USE_ENVIRON
208 envp = environ;
209 #endif /* USE_ENVIRON */
210
211 /* turn off profiling */
212 SM_PROF(0);
213
214 /* install default exception handler */
215 sm_exc_newthread(fatal_error);
216
217 /* set the default in/out channel so errors reported to screen */
218 InChannel = smioin;
219 OutChannel = smioout;
220
221 /*
222 ** Check to see if we reentered.
223 ** This would normally happen if e_putheader or e_putbody
224 ** were NULL when invoked.
225 */
226
227 if (starttime != 0)
228 {
229 syserr("main: reentered!");
230 abort();
231 }
232 starttime = curtime();
233
234 /* avoid null pointer dereferences */
235 TermEscape.te_rv_on = TermEscape.te_under_on = TermEscape.te_normal = "";
236
237 RealUid = getuid();
238 RealGid = getgid();
239
240 /* Check if sendmail is running with extra privs */
241 extraprivs = (RealUid != 0 &&
242 (geteuid() != getuid() || getegid() != getgid()));
243
244 CurrentPid = getpid();
245
246 /* get whatever .cf file is right for the opmode */
247 cftype = SM_GET_RIGHT_CF;
248
249 /* in 4.4BSD, the table can be huge; impose a reasonable limit */
250 DtableSize = getdtsize();
251 if (DtableSize > 256)
252 DtableSize = 256;
253
254 /*
255 ** Be sure we have enough file descriptors.
256 ** But also be sure that 0, 1, & 2 are open.
257 */
258
259 /* reset errno and fill_errno; the latter is used way down below */
260 errno = fill_errno = 0;
261 fill_fd(STDIN_FILENO, NULL);
262 if (errno != 0)
263 fill_errno = errno;
264 fill_fd(STDOUT_FILENO, NULL);
265 if (errno != 0)
266 fill_errno = errno;
267 fill_fd(STDERR_FILENO, NULL);
268 if (errno != 0)
269 fill_errno = errno;
270
271 sm_closefrom(STDERR_FILENO + 1, DtableSize);
272 errno = 0;
273 smdebug = NULL;
274
275 #if LOG
276 # ifndef SM_LOG_STR
277 # define SM_LOG_STR "sendmail"
278 # endif /* ! SM_LOG_STR */
279 # ifdef LOG_MAIL
280 openlog(SM_LOG_STR, LOG_PID, LOG_MAIL);
281 # else /* LOG_MAIL */
282 openlog(SM_LOG_STR, LOG_PID);
283 # endif /* LOG_MAIL */
284 #endif /* LOG */
285
286 /*
287 ** Seed the random number generator.
288 ** Used for queue file names, picking a queue directory, and
289 ** MX randomization.
290 */
291
292 seed_random();
293
294 /* do machine-dependent initializations */
295 init_md(argc, argv);
296
297
298 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + SL_FUDGE + SLDLL;
299
300 /* reset status from syserr() calls for missing file descriptors */
301 Errors = 0;
302 ExitStat = EX_OK;
303
304 SubmitMode = SUBMIT_UNKNOWN;
305 #if _FFR_LOCAL_DAEMON
306 LocalDaemon = false;
307 #endif /* _FFR_LOCAL_DAEMON */
308 #if XDEBUG
309 checkfd012("after openlog");
310 #endif /* XDEBUG */
311
312 tTsetup(tTdvect, sizeof(tTdvect), "0-99.1,*_trace_*.1");
313
314 #ifdef NGROUPS_MAX
315 /* save initial group set for future checks */
316 i = getgroups(NGROUPS_MAX, InitialGidSet);
317 if (i <= 0)
318 {
319 InitialGidSet[0] = (GID_T) -1;
320 i = 0;
321 }
322 while (i < NGROUPS_MAX)
323 InitialGidSet[i++] = InitialGidSet[0];
324 #endif /* NGROUPS_MAX */
325
326 /* drop group id privileges (RunAsUser not yet set) */
327 dp = drop_privileges(false);
328 setstat(dp);
329
330 #ifdef SIGUSR1
331 /* Only allow root (or non-set-*-ID binaries) to use SIGUSR1 */
332 if (!extraprivs)
333 {
334 /* arrange to dump state on user-1 signal */
335 (void) sm_signal(SIGUSR1, sigusr1);
336 }
337 else
338 {
339 /* ignore user-1 signal */
340 (void) sm_signal(SIGUSR1, SIG_IGN);
341 }
342 #endif /* SIGUSR1 */
343
344 /* initialize for setproctitle */
345 initsetproctitle(argc, argv, envp);
346
347 /* Handle any non-getoptable constructions. */
348 obsolete(argv);
349
350 /*
351 ** Do a quick prescan of the argument list.
352 */
353
354
355 /* find initial opMode */
356 OpMode = MD_DELIVER;
357 av = argv;
358 p = strrchr(*av, '/');
359 if (p++ == NULL)
360 p = *av;
361 if (strcmp(p, "newaliases") == 0)
362 OpMode = MD_INITALIAS;
363 else if (strcmp(p, "mailq") == 0)
364 OpMode = MD_PRINT;
365 else if (strcmp(p, "smtpd") == 0)
366 OpMode = MD_DAEMON;
367 else if (strcmp(p, "hoststat") == 0)
368 OpMode = MD_HOSTSTAT;
369 else if (strcmp(p, "purgestat") == 0)
370 OpMode = MD_PURGESTAT;
371
372 #if defined(__osf__) || defined(_AIX3)
373 # define OPTIONS "A:B:b:C:cD:d:e:F:f:Gh:IiL:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:x"
374 #endif /* defined(__osf__) || defined(_AIX3) */
375 #if defined(sony_news)
376 # define OPTIONS "A:B:b:C:cD:d:E:e:F:f:Gh:IiJ:L:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:"
377 #endif /* defined(sony_news) */
378 #ifndef OPTIONS
379 # define OPTIONS "A:B:b:C:cD:d:e:F:f:Gh:IiL:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:"
380 #endif /* ! OPTIONS */
381
382 /* Set to 0 to allow -b; need to check optarg before using it! */
383 opterr = 0;
384 while ((j = getopt(argc, argv, OPTIONS)) != -1)
385 {
386 switch (j)
387 {
388 case 'b': /* operations mode */
389 j = (optarg == NULL) ? ' ' : *optarg;
390 switch (j)
391 {
392 case MD_DAEMON:
393 case MD_FGDAEMON:
394 case MD_SMTP:
395 case MD_INITALIAS:
396 case MD_DELIVER:
397 case MD_VERIFY:
398 case MD_TEST:
399 case MD_PRINT:
400 case MD_PRINTNQE:
401 case MD_HOSTSTAT:
402 case MD_PURGESTAT:
403 case MD_ARPAFTP:
404 #if _FFR_CHECKCONFIG
405 case MD_CHECKCONFIG:
406 #endif /* _FFR_CHECKCONFIG */
407 OpMode = j;
408 break;
409
410 #if _FFR_LOCAL_DAEMON
411 case MD_LOCAL:
412 OpMode = MD_DAEMON;
413 LocalDaemon = true;
414 break;
415 #endif /* _FFR_LOCAL_DAEMON */
416
417 case MD_FREEZE:
418 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
419 "Frozen configurations unsupported\n");
420 return EX_USAGE;
421
422 default:
423 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
424 "Invalid operation mode %c\n",
425 j);
426 return EX_USAGE;
427 }
428 break;
429
430 case 'D':
431 if (debug)
432 {
433 errno = 0;
434 syserr("-D file must be before -d");
435 ExitStat = EX_USAGE;
436 break;
437 }
438 dp = drop_privileges(true);
439 setstat(dp);
440 smdebug = sm_io_open(SmFtStdio, SM_TIME_DEFAULT,
441 optarg, SM_IO_APPEND, NULL);
442 if (smdebug == NULL)
443 {
444 syserr("cannot open %s", optarg);
445 ExitStat = EX_CANTCREAT;
446 break;
447 }
448 sm_debug_setfile(smdebug);
449 break;
450
451 case 'd':
452 debug = true;
453 tTflag(optarg);
454 (void) sm_io_setvbuf(sm_debug_file(), SM_TIME_DEFAULT,
455 (char *) NULL, SM_IO_NBF,
456 SM_IO_BUFSIZ);
457 break;
458
459 case 'G': /* relay (gateway) submission */
460 SubmitMode = SUBMIT_MTA;
461 break;
462
463 case 'L':
464 if (optarg == NULL)
465 {
466 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
467 "option requires an argument -- '%c'",
468 (char) j);
469 return EX_USAGE;
470 }
471 j = SM_MIN(strlen(optarg), 32) + 1;
472 sysloglabel = xalloc(j);
473 (void) sm_strlcpy(sysloglabel, optarg, j);
474 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) +
475 SL_FUDGE + j;
476 break;
477
478 case 'Q':
479 case 'q':
480 /* just check if it is there */
481 queuerun = true;
482 break;
483 }
484 }
485 opterr = 1;
486
487 /* Don't leak queue information via debug flags */
488 if (extraprivs && queuerun && debug)
489 {
490 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
491 "WARNING: Can not use -d with -q. Disabling debugging.\n");
492 sm_debug_close();
493 sm_debug_setfile(NULL);
494 (void) memset(tTdvect, '\0', sizeof(tTdvect));
495 }
496
497 #if LOG
498 if (sysloglabel != NULL)
499 {
500 /* Sanitize the string */
501 for (p = sysloglabel; *p != '\0'; p++)
502 {
503 if (!isascii(*p) || !isprint(*p) || *p == '%')
504 *p = '*';
505 }
506 closelog();
507 # ifdef LOG_MAIL
508 openlog(sysloglabel, LOG_PID, LOG_MAIL);
509 # else /* LOG_MAIL */
510 openlog(sysloglabel, LOG_PID);
511 # endif /* LOG_MAIL */
512 }
513 #endif /* LOG */
514
515 /* set up the blank envelope */
516 BlankEnvelope.e_puthdr = putheader;
517 BlankEnvelope.e_putbody = putbody;
518 BlankEnvelope.e_xfp = NULL;
519 STRUCTCOPY(NullAddress, BlankEnvelope.e_from);
520 CurEnv = &BlankEnvelope;
521 STRUCTCOPY(NullAddress, MainEnvelope.e_from);
522
523 /*
524 ** Set default values for variables.
525 ** These cannot be in initialized data space.
526 */
527
528 setdefaults(&BlankEnvelope);
529 initmacros(&BlankEnvelope);
530
531 /* reset macro */
532 set_op_mode(OpMode);
533 if (OpMode == MD_DAEMON)
534 DaemonPid = CurrentPid; /* needed for finis() to work */
535
536 pw = sm_getpwuid(RealUid);
537 if (pw != NULL)
538 (void) sm_strlcpy(rnamebuf, pw->pw_name, sizeof(rnamebuf));
539 else
540 (void) sm_snprintf(rnamebuf, sizeof(rnamebuf), "Unknown UID %d",
541 (int) RealUid);
542
543 RealUserName = rnamebuf;
544
545 if (tTd(0, 101))
546 {
547 sm_dprintf("Version %s\n", Version);
548 finis(false, true, EX_OK);
549 /* NOTREACHED */
550 }
551
552 /*
553 ** if running non-set-user-ID binary as non-root, pretend
554 ** we are the RunAsUid
555 */
556
557 if (RealUid != 0 && geteuid() == RealUid)
558 {
559 if (tTd(47, 1))
560 sm_dprintf("Non-set-user-ID binary: RunAsUid = RealUid = %d\n",
561 (int) RealUid);
562 RunAsUid = RealUid;
563 }
564 else if (geteuid() != 0)
565 RunAsUid = geteuid();
566
567 EffGid = getegid();
568 if (RealUid != 0 && EffGid == RealGid)
569 RunAsGid = RealGid;
570
571 if (tTd(47, 5))
572 {
573 sm_dprintf("main: e/ruid = %d/%d e/rgid = %d/%d\n",
574 (int) geteuid(), (int) getuid(),
575 (int) getegid(), (int) getgid());
576 sm_dprintf("main: RunAsUser = %d:%d\n",
577 (int) RunAsUid, (int) RunAsGid);
578 }
579
580 /* save command line arguments */
581 j = 0;
582 for (av = argv; *av != NULL; )
583 j += strlen(*av++) + 1;
584 SaveArgv = (char **) xalloc(sizeof(char *) * (argc + 1));
585 CommandLineArgs = xalloc(j);
586 p = CommandLineArgs;
587 for (av = argv, i = 0; *av != NULL; )
588 {
589 int h;
590
591 SaveArgv[i++] = newstr(*av);
592 if (av != argv)
593 *p++ = ' ';
594 (void) sm_strlcpy(p, *av++, j);
595 h = strlen(p);
596 p += h;
597 j -= h + 1;
598 }
599 SaveArgv[i] = NULL;
600
601 if (tTd(0, 1))
602 {
603 extern char *CompileOptions[];
604
605 sm_dprintf("Version %s\n Compiled with:", Version);
606 sm_printoptions(CompileOptions);
607 }
608 if (tTd(0, 10))
609 {
610 extern char *OsCompileOptions[];
611
612 sm_dprintf(" OS Defines:");
613 sm_printoptions(OsCompileOptions);
614 #ifdef _PATH_UNIX
615 sm_dprintf("Kernel symbols:\t%s\n", _PATH_UNIX);
616 #endif /* _PATH_UNIX */
617
618 sm_dprintf(" Conf file:\t%s (default for MSP)\n",
619 getcfname(OpMode, SubmitMode, SM_GET_SUBMIT_CF,
620 conffile));
621 sm_dprintf(" Conf file:\t%s (default for MTA)\n",
622 getcfname(OpMode, SubmitMode, SM_GET_SENDMAIL_CF,
623 conffile));
624 sm_dprintf(" Pid file:\t%s (default)\n", PidFile);
625 }
626
627 if (tTd(0, 12))
628 {
629 extern char *SmCompileOptions[];
630
631 sm_dprintf(" libsm Defines:");
632 sm_printoptions(SmCompileOptions);
633 }
634
635 if (tTd(0, 13))
636 {
637 extern char *FFRCompileOptions[];
638
639 sm_dprintf(" FFR Defines:");
640 sm_printoptions(FFRCompileOptions);
641 }
642
643 /* clear sendmail's environment */
644 ExternalEnviron = environ;
645 emptyenviron[0] = NULL;
646 environ = emptyenviron;
647
648 /*
649 ** restore any original TZ setting until TimeZoneSpec has been
650 ** determined - or early log messages may get bogus time stamps
651 */
652
653 if ((p = getextenv("TZ")) != NULL)
654 {
655 char *tz;
656 int tzlen;
657
658 /* XXX check for reasonable length? */
659 tzlen = strlen(p) + 4;
660 tz = xalloc(tzlen);
661 (void) sm_strlcpyn(tz, tzlen, 2, "TZ=", p);
662
663 /* XXX check return code? */
664 (void) putenv(tz);
665 }
666
667 /* prime the child environment */
668 sm_setuserenv("AGENT", "sendmail");
669
670 (void) sm_signal(SIGPIPE, SIG_IGN);
671 OldUmask = umask(022);
672 FullName = getextenv("NAME");
673 if (FullName != NULL)
674 FullName = newstr(FullName);
675
676 /*
677 ** Initialize name server if it is going to be used.
678 */
679
680 #if NAMED_BIND
681 if (!bitset(RES_INIT, _res.options))
682 (void) res_init();
683 if (tTd(8, 8))
684 _res.options |= RES_DEBUG;
685 else
686 _res.options &= ~RES_DEBUG;
687 # ifdef RES_NOALIASES
688 _res.options |= RES_NOALIASES;
689 # endif /* RES_NOALIASES */
690 TimeOuts.res_retry[RES_TO_DEFAULT] = _res.retry;
691 TimeOuts.res_retry[RES_TO_FIRST] = _res.retry;
692 TimeOuts.res_retry[RES_TO_NORMAL] = _res.retry;
693 TimeOuts.res_retrans[RES_TO_DEFAULT] = _res.retrans;
694 TimeOuts.res_retrans[RES_TO_FIRST] = _res.retrans;
695 TimeOuts.res_retrans[RES_TO_NORMAL] = _res.retrans;
696 #endif /* NAMED_BIND */
697
698 errno = 0;
699 from = NULL;
700
701 /* initialize some macros, etc. */
702 init_vendor_macros(&BlankEnvelope);
703
704 /* version */
705 macdefine(&BlankEnvelope.e_macro, A_PERM, 'v', Version);
706
707 /* hostname */
708 hp = myhostname(jbuf, sizeof(jbuf));
709 if (jbuf[0] != '\0')
710 {
711 struct utsname utsname;
712
713 if (tTd(0, 4))
714 sm_dprintf("Canonical name: %s\n", jbuf);
715 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'w', jbuf);
716 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'j', jbuf);
717 setclass('w', jbuf);
718
719 p = strchr(jbuf, '.');
720 if (p != NULL && p[1] != '\0')
721 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'm', &p[1]);
722
723 if (uname(&utsname) >= 0)
724 p = utsname.nodename;
725 else
726 {
727 if (tTd(0, 22))
728 sm_dprintf("uname failed (%s)\n",
729 sm_errstring(errno));
730 makelower(jbuf);
731 p = jbuf;
732 }
733 if (tTd(0, 4))
734 sm_dprintf(" UUCP nodename: %s\n", p);
735 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'k', p);
736 setclass('k', p);
737 setclass('w', p);
738 }
739 if (hp != NULL)
740 {
741 for (av = hp->h_aliases; av != NULL && *av != NULL; av++)
742 {
743 if (tTd(0, 4))
744 sm_dprintf("\ta.k.a.: %s\n", *av);
745 setclass('w', *av);
746 }
747 #if NETINET || NETINET6
748 for (i = 0; i >= 0 && hp->h_addr_list[i] != NULL; i++)
749 {
750 # if NETINET6
751 char *addr;
752 char buf6[INET6_ADDRSTRLEN];
753 struct in6_addr ia6;
754 # endif /* NETINET6 */
755 # if NETINET
756 struct in_addr ia;
757 # endif /* NETINET */
758 char ipbuf[103];
759
760 ipbuf[0] = '\0';
761 switch (hp->h_addrtype)
762 {
763 # if NETINET
764 case AF_INET:
765 if (hp->h_length != INADDRSZ)
766 break;
767
768 memmove(&ia, hp->h_addr_list[i], INADDRSZ);
769 (void) sm_snprintf(ipbuf, sizeof(ipbuf),
770 "[%.100s]", inet_ntoa(ia));
771 break;
772 # endif /* NETINET */
773
774 # if NETINET6
775 case AF_INET6:
776 if (hp->h_length != IN6ADDRSZ)
777 break;
778
779 memmove(&ia6, hp->h_addr_list[i], IN6ADDRSZ);
780 addr = anynet_ntop(&ia6, buf6, sizeof(buf6));
781 if (addr != NULL)
782 (void) sm_snprintf(ipbuf, sizeof(ipbuf),
783 "[%.100s]", addr);
784 break;
785 # endif /* NETINET6 */
786 }
787 if (ipbuf[0] == '\0')
788 break;
789
790 if (tTd(0, 4))
791 sm_dprintf("\ta.k.a.: %s\n", ipbuf);
792 setclass('w', ipbuf);
793 }
794 #endif /* NETINET || NETINET6 */
795 #if NETINET6
796 freehostent(hp);
797 hp = NULL;
798 #endif /* NETINET6 */
799 }
800
801 /* current time */
802 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'b', arpadate((char *) NULL));
803
804 /* current load average */
805 sm_getla();
806
807 QueueLimitRecipient = (QUEUE_CHAR *) NULL;
808 QueueLimitSender = (QUEUE_CHAR *) NULL;
809 QueueLimitId = (QUEUE_CHAR *) NULL;
810 QueueLimitQuarantine = (QUEUE_CHAR *) NULL;
811
812 /*
813 ** Crack argv.
814 */
815
816 optind = 1;
817 while ((j = getopt(argc, argv, OPTIONS)) != -1)
818 {
819 switch (j)
820 {
821 case 'b': /* operations mode */
822 /* already done */
823 break;
824
825 case 'A': /* use Alternate sendmail/submit.cf */
826 cftype = optarg[0] == 'c' ? SM_GET_SUBMIT_CF
827 : SM_GET_SENDMAIL_CF;
828 break;
829
830 case 'B': /* body type */
831 CHECK_AGAINST_OPMODE(j);
832 BlankEnvelope.e_bodytype = newstr(optarg);
833 break;
834
835 case 'C': /* select configuration file (already done) */
836 if (RealUid != 0)
837 warn_C_flag = true;
838 conffile = newstr(optarg);
839 dp = drop_privileges(true);
840 setstat(dp);
841 safecf = false;
842 break;
843
844 case 'D':
845 case 'd': /* debugging */
846 /* already done */
847 break;
848
849 case 'f': /* from address */
850 case 'r': /* obsolete -f flag */
851 CHECK_AGAINST_OPMODE(j);
852 if (from != NULL)
853 {
854 usrerr("More than one \"from\" person");
855 ExitStat = EX_USAGE;
856 break;
857 }
858 if (optarg[0] == '\0')
859 from = newstr("<>");
860 else
861 from = newstr(denlstring(optarg, true, true));
862 if (strcmp(RealUserName, from) != 0)
863 warn_f_flag = j;
864 break;
865
866 case 'F': /* set full name */
867 CHECK_AGAINST_OPMODE(j);
868 FullName = newstr(optarg);
869 break;
870
871 case 'G': /* relay (gateway) submission */
872 /* already set */
873 CHECK_AGAINST_OPMODE(j);
874 break;
875
876 case 'h': /* hop count */
877 CHECK_AGAINST_OPMODE(j);
878 BlankEnvelope.e_hopcount = (short) strtol(optarg, &ep,
879 10);
880 (void) sm_snprintf(buf, sizeof(buf), "%d",
881 BlankEnvelope.e_hopcount);
882 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'c', buf);
883
884 if (*ep)
885 {
886 usrerr("Bad hop count (%s)", optarg);
887 ExitStat = EX_USAGE;
888 }
889 break;
890
891 case 'L': /* program label */
892 /* already set */
893 break;
894
895 case 'n': /* don't alias */
896 CHECK_AGAINST_OPMODE(j);
897 NoAlias = true;
898 break;
899
900 case 'N': /* delivery status notifications */
901 CHECK_AGAINST_OPMODE(j);
902 DefaultNotify |= QHASNOTIFY;
903 macdefine(&BlankEnvelope.e_macro, A_TEMP,
904 macid("{dsn_notify}"), optarg);
905 if (sm_strcasecmp(optarg, "never") == 0)
906 break;
907 for (p = optarg; p != NULL; optarg = p)
908 {
909 p = strchr(p, ',');
910 if (p != NULL)
911 *p++ = '\0';
912 if (sm_strcasecmp(optarg, "success") == 0)
913 DefaultNotify |= QPINGONSUCCESS;
914 else if (sm_strcasecmp(optarg, "failure") == 0)
915 DefaultNotify |= QPINGONFAILURE;
916 else if (sm_strcasecmp(optarg, "delay") == 0)
917 DefaultNotify |= QPINGONDELAY;
918 else
919 {
920 usrerr("Invalid -N argument");
921 ExitStat = EX_USAGE;
922 }
923 }
924 break;
925
926 case 'o': /* set option */
927 setoption(*optarg, optarg + 1, false, true,
928 &BlankEnvelope);
929 break;
930
931 case 'O': /* set option (long form) */
932 setoption(' ', optarg, false, true, &BlankEnvelope);
933 break;
934
935 case 'p': /* set protocol */
936 CHECK_AGAINST_OPMODE(j);
937 p = strchr(optarg, ':');
938 if (p != NULL)
939 {
940 *p++ = '\0';
941 if (*p != '\0')
942 {
943 i = strlen(p) + 1;
944 ep = sm_malloc_x(i);
945 cleanstrcpy(ep, p, i);
946 macdefine(&BlankEnvelope.e_macro,
947 A_HEAP, 's', ep);
948 }
949 }
950 if (*optarg != '\0')
951 {
952 i = strlen(optarg) + 1;
953 ep = sm_malloc_x(i);
954 cleanstrcpy(ep, optarg, i);
955 macdefine(&BlankEnvelope.e_macro, A_HEAP,
956 'r', ep);
957 }
958 break;
959
960 case 'Q': /* change quarantining on queued items */
961 /* sanity check */
962 if (OpMode != MD_DELIVER &&
963 OpMode != MD_QUEUERUN)
964 {
965 usrerr("Can not use -Q with -b%c", OpMode);
966 ExitStat = EX_USAGE;
967 break;
968 }
969
970 if (OpMode == MD_DELIVER)
971 set_op_mode(MD_QUEUERUN);
972
973 FullName = NULL;
974
975 quarantining = newstr(optarg);
976 break;
977
978 case 'q': /* run queue files at intervals */
979 /* sanity check */
980 if (OpMode != MD_DELIVER &&
981 OpMode != MD_DAEMON &&
982 OpMode != MD_FGDAEMON &&
983 OpMode != MD_PRINT &&
984 OpMode != MD_PRINTNQE &&
985 OpMode != MD_QUEUERUN)
986 {
987 usrerr("Can not use -q with -b%c", OpMode);
988 ExitStat = EX_USAGE;
989 break;
990 }
991
992 /* don't override -bd, -bD or -bp */
993 if (OpMode == MD_DELIVER)
994 set_op_mode(MD_QUEUERUN);
995
996 FullName = NULL;
997 negate = optarg[0] == '!';
998 if (negate)
999 {
1000 /* negate meaning of pattern match */
1001 optarg++; /* skip '!' for next switch */
1002 }
1003
1004 switch (optarg[0])
1005 {
1006 case 'G': /* Limit by queue group name */
1007 if (negate)
1008 {
1009 usrerr("Can not use -q!G");
1010 ExitStat = EX_USAGE;
1011 break;
1012 }
1013 if (queuegroup != NULL)
1014 {
1015 usrerr("Can not use multiple -qG options");
1016 ExitStat = EX_USAGE;
1017 break;
1018 }
1019 queuegroup = newstr(&optarg[1]);
1020 break;
1021
1022 case 'I': /* Limit by ID */
1023 new = (QUEUE_CHAR *) xalloc(sizeof(*new));
1024 new->queue_match = newstr(&optarg[1]);
1025 new->queue_negate = negate;
1026 new->queue_next = QueueLimitId;
1027 QueueLimitId = new;
1028 break;
1029
1030 case 'R': /* Limit by recipient */
1031 new = (QUEUE_CHAR *) xalloc(sizeof(*new));
1032 new->queue_match = newstr(&optarg[1]);
1033 new->queue_negate = negate;
1034 new->queue_next = QueueLimitRecipient;
1035 QueueLimitRecipient = new;
1036 break;
1037
1038 case 'S': /* Limit by sender */
1039 new = (QUEUE_CHAR *) xalloc(sizeof(*new));
1040 new->queue_match = newstr(&optarg[1]);
1041 new->queue_negate = negate;
1042 new->queue_next = QueueLimitSender;
1043 QueueLimitSender = new;
1044 break;
1045
1046 case 'f': /* foreground queue run */
1047 foregroundqueue = true;
1048 break;
1049
1050 case 'Q': /* Limit by quarantine message */
1051 if (optarg[1] != '\0')
1052 {
1053 new = (QUEUE_CHAR *) xalloc(sizeof(*new));
1054 new->queue_match = newstr(&optarg[1]);
1055 new->queue_negate = negate;
1056 new->queue_next = QueueLimitQuarantine;
1057 QueueLimitQuarantine = new;
1058 }
1059 QueueMode = QM_QUARANTINE;
1060 break;
1061
1062 case 'L': /* act on lost items */
1063 QueueMode = QM_LOST;
1064 break;
1065
1066 case 'p': /* Persistent queue */
1067 queuepersistent = true;
1068 if (QueueIntvl == 0)
1069 QueueIntvl = 1;
1070 if (optarg[1] == '\0')
1071 break;
1072 ++optarg;
1073 /* FALLTHROUGH */
1074
1075 default:
1076 i = Errors;
1077 QueueIntvl = convtime(optarg, 'm');
1078 if (QueueIntvl < 0)
1079 {
1080 usrerr("Invalid -q value");
1081 ExitStat = EX_USAGE;
1082 }
1083
1084 /* check for bad conversion */
1085 if (i < Errors)
1086 ExitStat = EX_USAGE;
1087 break;
1088 }
1089 break;
1090
1091 case 'R': /* DSN RET: what to return */
1092 CHECK_AGAINST_OPMODE(j);
1093 if (bitset(EF_RET_PARAM, BlankEnvelope.e_flags))
1094 {
1095 usrerr("Duplicate -R flag");
1096 ExitStat = EX_USAGE;
1097 break;
1098 }
1099 BlankEnvelope.e_flags |= EF_RET_PARAM;
1100 if (sm_strcasecmp(optarg, "hdrs") == 0)
1101 BlankEnvelope.e_flags |= EF_NO_BODY_RETN;
1102 else if (sm_strcasecmp(optarg, "full") != 0)
1103 {
1104 usrerr("Invalid -R value");
1105 ExitStat = EX_USAGE;
1106 }
1107 macdefine(&BlankEnvelope.e_macro, A_TEMP,
1108 macid("{dsn_ret}"), optarg);
1109 break;
1110
1111 case 't': /* read recipients from message */
1112 CHECK_AGAINST_OPMODE(j);
1113 GrabTo = true;
1114 break;
1115
1116 case 'V': /* DSN ENVID: set "original" envelope id */
1117 CHECK_AGAINST_OPMODE(j);
1118 if (!xtextok(optarg))
1119 {
1120 usrerr("Invalid syntax in -V flag");
1121 ExitStat = EX_USAGE;
1122 }
1123 else
1124 {
1125 BlankEnvelope.e_envid = newstr(optarg);
1126 macdefine(&BlankEnvelope.e_macro, A_TEMP,
1127 macid("{dsn_envid}"), optarg);
1128 }
1129 break;
1130
1131 case 'X': /* traffic log file */
1132 dp = drop_privileges(true);
1133 setstat(dp);
1134 if (stat(optarg, &traf_st) == 0 &&
1135 S_ISFIFO(traf_st.st_mode))
1136 TrafficLogFile = sm_io_open(SmFtStdio,
1137 SM_TIME_DEFAULT,
1138 optarg,
1139 SM_IO_WRONLY, NULL);
1140 else
1141 TrafficLogFile = sm_io_open(SmFtStdio,
1142 SM_TIME_DEFAULT,
1143 optarg,
1144 SM_IO_APPEND, NULL);
1145 if (TrafficLogFile == NULL)
1146 {
1147 syserr("cannot open %s", optarg);
1148 ExitStat = EX_CANTCREAT;
1149 break;
1150 }
1151 (void) sm_io_setvbuf(TrafficLogFile, SM_TIME_DEFAULT,
1152 NULL, SM_IO_LBF, 0);
1153 break;
1154
1155 /* compatibility flags */
1156 case 'c': /* connect to non-local mailers */
1157 case 'i': /* don't let dot stop me */
1158 case 'm': /* send to me too */
1159 case 'T': /* set timeout interval */
1160 case 'v': /* give blow-by-blow description */
1161 setoption(j, "T", false, true, &BlankEnvelope);
1162 break;
1163
1164 case 'e': /* error message disposition */
1165 case 'M': /* define macro */
1166 setoption(j, optarg, false, true, &BlankEnvelope);
1167 break;
1168
1169 case 's': /* save From lines in headers */
1170 setoption('f', "T", false, true, &BlankEnvelope);
1171 break;
1172
1173 #ifdef DBM
1174 case 'I': /* initialize alias DBM file */
1175 set_op_mode(MD_INITALIAS);
1176 break;
1177 #endif /* DBM */
1178
1179 #if defined(__osf__) || defined(_AIX3)
1180 case 'x': /* random flag that OSF/1 & AIX mailx passes */
1181 break;
1182 #endif /* defined(__osf__) || defined(_AIX3) */
1183 #if defined(sony_news)
1184 case 'E':
1185 case 'J': /* ignore flags for Japanese code conversion
1186 implemented on Sony NEWS */
1187 break;
1188 #endif /* defined(sony_news) */
1189
1190 default:
1191 finis(true, true, EX_USAGE);
1192 /* NOTREACHED */
1193 break;
1194 }
1195 }
1196
1197 /* if we've had errors so far, exit now */
1198 if ((ExitStat != EX_OK && OpMode != MD_TEST && OpMode != MD_CHECKCONFIG) ||
1199 ExitStat == EX_OSERR)
1200 {
1201 finis(false, true, ExitStat);
1202 /* NOTREACHED */
1203 }
1204
1205 if (bitset(SUBMIT_MTA, SubmitMode))
1206 {
1207 /* If set daemon_flags on command line, don't reset it */
1208 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL)
1209 macdefine(&BlankEnvelope.e_macro, A_PERM,
1210 macid("{daemon_flags}"), "CC f");
1211 }
1212 else if (OpMode == MD_DELIVER || OpMode == MD_SMTP)
1213 {
1214 SubmitMode = SUBMIT_MSA;
1215
1216 /* If set daemon_flags on command line, don't reset it */
1217 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL)
1218 macdefine(&BlankEnvelope.e_macro, A_PERM,
1219 macid("{daemon_flags}"), "c u");
1220 }
1221
1222 /*
1223 ** Do basic initialization.
1224 ** Read system control file.
1225 ** Extract special fields for local use.
1226 */
1227
1228 #if XDEBUG
1229 checkfd012("before readcf");
1230 #endif /* XDEBUG */
1231 vendor_pre_defaults(&BlankEnvelope);
1232
1233 readcf(getcfname(OpMode, SubmitMode, cftype, conffile),
1234 safecf, &BlankEnvelope);
1235 #if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_)
1236 ConfigFileRead = true;
1237 #endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */
1238 vendor_post_defaults(&BlankEnvelope);
1239
1240 /* now we can complain about missing fds */
1241 if (MissingFds != 0 && LogLevel > 8)
1242 {
1243 char mbuf[MAXLINE];
1244
1245 mbuf[0] = '\0';
1246 if (bitset(1 << STDIN_FILENO, MissingFds))
1247 (void) sm_strlcat(mbuf, ", stdin", sizeof(mbuf));
1248 if (bitset(1 << STDOUT_FILENO, MissingFds))
1249 (void) sm_strlcat(mbuf, ", stdout", sizeof(mbuf));
1250 if (bitset(1 << STDERR_FILENO, MissingFds))
1251 (void) sm_strlcat(mbuf, ", stderr", sizeof(mbuf));
1252
1253 /* Notice: fill_errno is from high above: fill_fd() */
1254 sm_syslog(LOG_WARNING, NOQID,
1255 "File descriptors missing on startup: %s; %s",
1256 &mbuf[2], sm_errstring(fill_errno));
1257 }
1258
1259 /* Remove the ability for a normal user to send signals */
1260 if (RealUid != 0 && RealUid != geteuid())
1261 {
1262 uid_t new_uid = geteuid();
1263
1264 #if HASSETREUID
1265 /*
1266 ** Since we can differentiate between uid and euid,
1267 ** make the uid a different user so the real user
1268 ** can't send signals. However, it doesn't need to be
1269 ** root (euid has root).
1270 */
1271
1272 if (new_uid == 0)
1273 new_uid = DefUid;
1274 if (tTd(47, 5))
1275 sm_dprintf("Changing real uid to %d\n", (int) new_uid);
1276 if (setreuid(new_uid, geteuid()) < 0)
1277 {
1278 syserr("main: setreuid(%d, %d) failed",
1279 (int) new_uid, (int) geteuid());
1280 finis(false, true, EX_OSERR);
1281 /* NOTREACHED */
1282 }
1283 if (tTd(47, 10))
1284 sm_dprintf("Now running as e/ruid %d:%d\n",
1285 (int) geteuid(), (int) getuid());
1286 #else /* HASSETREUID */
1287 /*
1288 ** Have to change both effective and real so need to
1289 ** change them both to effective to keep privs.
1290 */
1291
1292 if (tTd(47, 5))
1293 sm_dprintf("Changing uid to %d\n", (int) new_uid);
1294 if (setuid(new_uid) < 0)
1295 {
1296 syserr("main: setuid(%d) failed", (int) new_uid);
1297 finis(false, true, EX_OSERR);
1298 /* NOTREACHED */
1299 }
1300 if (tTd(47, 10))
1301 sm_dprintf("Now running as e/ruid %d:%d\n",
1302 (int) geteuid(), (int) getuid());
1303 #endif /* HASSETREUID */
1304 }
1305
1306 #if NAMED_BIND
1307 if (FallbackMX != NULL)
1308 (void) getfallbackmxrr(FallbackMX);
1309 #endif /* NAMED_BIND */
1310
1311 if (SuperSafe == SAFE_INTERACTIVE && CurEnv->e_sendmode != SM_DELIVER)
1312 {
1313 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
1314 "WARNING: SuperSafe=interactive should only be used with\n DeliveryMode=interactive\n");
1315 }
1316
1317 if (UseMSP && (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON))
1318 {
1319 usrerr("Mail submission program cannot be used as daemon");
1320 finis(false, true, EX_USAGE);
1321 }
1322
1323 if (OpMode == MD_DELIVER || OpMode == MD_SMTP ||
1324 OpMode == MD_QUEUERUN || OpMode == MD_ARPAFTP ||
1325 OpMode == MD_DAEMON || OpMode == MD_FGDAEMON)
1326 makeworkgroups();
1327
1328 /* set up the basic signal handlers */
1329 if (sm_signal(SIGINT, SIG_IGN) != SIG_IGN)
1330 (void) sm_signal(SIGINT, intsig);
1331 (void) sm_signal(SIGTERM, intsig);
1332
1333 /* Enforce use of local time (null string overrides this) */
1334 if (TimeZoneSpec == NULL)
1335 unsetenv("TZ");
1336 else if (TimeZoneSpec[0] != '\0')
1337 sm_setuserenv("TZ", TimeZoneSpec);
1338 else
1339 sm_setuserenv("TZ", NULL);
1340 tzset();
1341
1342 /* initialize mailbox database */
1343 i = sm_mbdb_initialize(Mbdb);
1344 if (i != EX_OK)
1345 {
1346 usrerr("Can't initialize mailbox database \"%s\": %s",
1347 Mbdb, sm_strexit(i));
1348 ExitStat = i;
1349 }
1350
1351 /* avoid denial-of-service attacks */
1352 resetlimits();
1353
1354 if (OpMode == MD_TEST)
1355 {
1356 /* can't be done after readcf if RunAs* is used */
1357 dp = drop_privileges(true);
1358 if (dp != EX_OK)
1359 {
1360 finis(false, true, dp);
1361 /* NOTREACHED */
1362 }
1363 }
1364 else if (OpMode != MD_DAEMON && OpMode != MD_FGDAEMON)
1365 {
1366 /* drop privileges -- daemon mode done after socket/bind */
1367 dp = drop_privileges(false);
1368 setstat(dp);
1369 if (dp == EX_OK && UseMSP && (geteuid() == 0 || getuid() == 0))
1370 {
1371 usrerr("Mail submission program must have RunAsUser set to non root user");
1372 finis(false, true, EX_CONFIG);
1373 /* NOTREACHED */
1374 }
1375 }
1376
1377 #if NAMED_BIND
1378 _res.retry = TimeOuts.res_retry[RES_TO_DEFAULT];
1379 _res.retrans = TimeOuts.res_retrans[RES_TO_DEFAULT];
1380 #endif /* NAMED_BIND */
1381
1382 /*
1383 ** Find our real host name for future logging.
1384 */
1385
1386 authinfo = getauthinfo(STDIN_FILENO, &forged);
1387 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo);
1388
1389 /* suppress error printing if errors mailed back or whatever */
1390 if (BlankEnvelope.e_errormode != EM_PRINT)
1391 HoldErrs = true;
1392
1393 /* set up the $=m class now, after .cf has a chance to redefine $m */
1394 expand("\201m", jbuf, sizeof(jbuf), &BlankEnvelope);
1395 if (jbuf[0] != '\0')
1396 setclass('m', jbuf);
1397
1398 /* probe interfaces and locate any additional names */
1399 if (DontProbeInterfaces != DPI_PROBENONE)
1400 load_if_names();
1401
1402 if (tTd(0, 10))
1403 {
1404 char pidpath[MAXPATHLEN];
1405
1406 /* Now we know which .cf file we use */
1407 sm_dprintf(" Conf file:\t%s (selected)\n",
1408 getcfname(OpMode, SubmitMode, cftype, conffile));
1409 expand(PidFile, pidpath, sizeof(pidpath), &BlankEnvelope);
1410 sm_dprintf(" Pid file:\t%s (selected)\n", pidpath);
1411 }
1412
1413 if (tTd(0, 1))
1414 {
1415 sm_dprintf("\n============ SYSTEM IDENTITY (after readcf) ============");
1416 sm_dprintf("\n (short domain name) $w = ");
1417 xputs(sm_debug_file(), macvalue('w', &BlankEnvelope));
1418 sm_dprintf("\n (canonical domain name) $j = ");
1419 xputs(sm_debug_file(), macvalue('j', &BlankEnvelope));
1420 sm_dprintf("\n (subdomain name) $m = ");
1421 xputs(sm_debug_file(), macvalue('m', &BlankEnvelope));
1422 sm_dprintf("\n (node name) $k = ");
1423 xputs(sm_debug_file(), macvalue('k', &BlankEnvelope));
1424 sm_dprintf("\n========================================================\n\n");
1425 }
1426
1427 /*
1428 ** Do more command line checking -- these are things that
1429 ** have to modify the results of reading the config file.
1430 */
1431
1432 /* process authorization warnings from command line */
1433 if (warn_C_flag)
1434 auth_warning(&BlankEnvelope, "Processed by %s with -C %s",
1435 RealUserName, conffile);
1436 if (Warn_Q_option && !wordinclass(RealUserName, 't'))
1437 auth_warning(&BlankEnvelope, "Processed from queue %s",
1438 QueueDir);
1439 if (sysloglabel != NULL && !wordinclass(RealUserName, 't') &&
1440 RealUid != 0 && RealUid != TrustedUid && LogLevel > 1)
1441 sm_syslog(LOG_WARNING, NOQID, "user %d changed syslog label",
1442 (int) RealUid);
1443
1444 /* check body type for legality */
1445 i = check_bodytype(BlankEnvelope.e_bodytype);
1446 if (i == BODYTYPE_ILLEGAL)
1447 {
1448 usrerr("Illegal body type %s", BlankEnvelope.e_bodytype);
1449 BlankEnvelope.e_bodytype = NULL;
1450 }
1451 else if (i != BODYTYPE_NONE)
1452 SevenBitInput = (i == BODYTYPE_7BIT);
1453
1454 /* tweak default DSN notifications */
1455 if (DefaultNotify == 0)
1456 DefaultNotify = QPINGONFAILURE|QPINGONDELAY;
1457
1458 /* check for sane configuration level */
1459 if (ConfigLevel > MAXCONFIGLEVEL)
1460 {
1461 syserr("Warning: .cf version level (%d) exceeds sendmail version %s functionality (%d)",
1462 ConfigLevel, Version, MAXCONFIGLEVEL);
1463 }
1464
1465 /* need MCI cache to have persistence */
1466 if (HostStatDir != NULL && MaxMciCache == 0)
1467 {
1468 HostStatDir = NULL;
1469 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
1470 "Warning: HostStatusDirectory disabled with ConnectionCacheSize = 0\n");
1471 }
1472
1473 /* need HostStatusDir in order to have SingleThreadDelivery */
1474 if (SingleThreadDelivery && HostStatDir == NULL)
1475 {
1476 SingleThreadDelivery = false;
1477 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
1478 "Warning: HostStatusDirectory required for SingleThreadDelivery\n");
1479 }
1480
1481 #if _FFR_MEMSTAT
1482 j = sm_memstat_open();
1483 if (j < 0 && (RefuseLowMem > 0 || QueueLowMem > 0) && LogLevel > 4)
1484 {
1485 sm_syslog(LOG_WARNING, NOQID,
1486 "cannot get memory statistics, settings ignored, error=%d"
1487 , j);
1488 }
1489 #endif /* _FFR_MEMSTAT */
1490
1491 /* check for permissions */
1492 if (RealUid != 0 &&
1493 RealUid != TrustedUid)
1494 {
1495 char *action = NULL;
1496
1497 switch (OpMode)
1498 {
1499 case MD_QUEUERUN:
1500 if (quarantining != NULL)
1501 action = "quarantine jobs";
1502 else
1503 {
1504 /* Normal users can do a single queue run */
1505 if (QueueIntvl == 0)
1506 break;
1507 }
1508
1509 /* but not persistent queue runners */
1510 if (action == NULL)
1511 action = "start a queue runner daemon";
1512 /* FALLTHROUGH */
1513
1514 case MD_PURGESTAT:
1515 if (action == NULL)
1516 action = "purge host status";
1517 /* FALLTHROUGH */
1518
1519 case MD_DAEMON:
1520 case MD_FGDAEMON:
1521 if (action == NULL)
1522 action = "run daemon";
1523
1524 if (tTd(65, 1))
1525 sm_dprintf("Deny user %d attempt to %s\n",
1526 (int) RealUid, action);
1527
1528 if (LogLevel > 1)
1529 sm_syslog(LOG_ALERT, NOQID,
1530 "user %d attempted to %s",
1531 (int) RealUid, action);
1532 HoldErrs = false;
1533 usrerr("Permission denied (real uid not trusted)");
1534 finis(false, true, EX_USAGE);
1535 /* NOTREACHED */
1536 break;
1537
1538 case MD_VERIFY:
1539 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags))
1540 {
1541 /*
1542 ** If -bv and RestrictExpand,
1543 ** drop privs to prevent normal
1544 ** users from reading private
1545 ** aliases/forwards/:include:s
1546 */
1547
1548 if (tTd(65, 1))
1549 sm_dprintf("Drop privs for user %d attempt to expand (RestrictExpand)\n",
1550 (int) RealUid);
1551
1552 dp = drop_privileges(true);
1553
1554 /* Fake address safety */
1555 if (tTd(65, 1))
1556 sm_dprintf("Faking DontBlameSendmail=NonRootSafeAddr\n");
1557 setbitn(DBS_NONROOTSAFEADDR, DontBlameSendmail);
1558
1559 if (dp != EX_OK)
1560 {
1561 if (tTd(65, 1))
1562 sm_dprintf("Failed to drop privs for user %d attempt to expand, exiting\n",
1563 (int) RealUid);
1564 CurEnv->e_id = NULL;
1565 finis(true, true, dp);
1566 /* NOTREACHED */
1567 }
1568 }
1569 break;
1570
1571 case MD_TEST:
1572 case MD_CHECKCONFIG:
1573 case MD_PRINT:
1574 case MD_PRINTNQE:
1575 case MD_FREEZE:
1576 case MD_HOSTSTAT:
1577 /* Nothing special to check */
1578 break;
1579
1580 case MD_INITALIAS:
1581 if (!wordinclass(RealUserName, 't'))
1582 {
1583 if (tTd(65, 1))
1584 sm_dprintf("Deny user %d attempt to rebuild the alias map\n",
1585 (int) RealUid);
1586 if (LogLevel > 1)
1587 sm_syslog(LOG_ALERT, NOQID,
1588 "user %d attempted to rebuild the alias map",
1589 (int) RealUid);
1590 HoldErrs = false;
1591 usrerr("Permission denied (real uid not trusted)");
1592 finis(false, true, EX_USAGE);
1593 /* NOTREACHED */
1594 }
1595 if (UseMSP)
1596 {
1597 HoldErrs = false;
1598 usrerr("User %d cannot rebuild aliases in mail submission program",
1599 (int) RealUid);
1600 finis(false, true, EX_USAGE);
1601 /* NOTREACHED */
1602 }
1603 /* FALLTHROUGH */
1604
1605 default:
1606 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags) &&
1607 Verbose != 0)
1608 {
1609 /*
1610 ** If -v and RestrictExpand, reset
1611 ** Verbose to prevent normal users
1612 ** from seeing the expansion of
1613 ** aliases/forwards/:include:s
1614 */
1615
1616 if (tTd(65, 1))
1617 sm_dprintf("Dropping verbosity for user %d (RestrictExpand)\n",
1618 (int) RealUid);
1619 Verbose = 0;
1620 }
1621 break;
1622 }
1623 }
1624
1625 if (MeToo)
1626 BlankEnvelope.e_flags |= EF_METOO;
1627
1628 switch (OpMode)
1629 {
1630 case MD_TEST:
1631 /* don't have persistent host status in test mode */
1632 HostStatDir = NULL;
1633 /* FALLTHROUGH */
1634
1635 case MD_CHECKCONFIG:
1636 if (Verbose == 0)
1637 Verbose = 2;
1638 BlankEnvelope.e_errormode = EM_PRINT;
1639 HoldErrs = false;
1640 break;
1641
1642 case MD_VERIFY:
1643 BlankEnvelope.e_errormode = EM_PRINT;
1644 HoldErrs = false;
1645 /* arrange to exit cleanly on hangup signal */
1646 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL)
1647 (void) sm_signal(SIGHUP, intsig);
1648 if (geteuid() != 0)
1649 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
1650 "Notice: -bv may give misleading output for non-privileged user\n");
1651 break;
1652
1653 case MD_FGDAEMON:
1654 run_in_foreground = true;
1655 set_op_mode(MD_DAEMON);
1656 /* FALLTHROUGH */
1657
1658 case MD_DAEMON:
1659 vendor_daemon_setup(&BlankEnvelope);
1660
1661 /* remove things that don't make sense in daemon mode */
1662 FullName = NULL;
1663 GrabTo = false;
1664
1665 /* arrange to restart on hangup signal */
1666 if (SaveArgv[0] == NULL || SaveArgv[0][0] != '/')
1667 sm_syslog(LOG_WARNING, NOQID,
1668 "daemon invoked without full pathname; kill -1 won't work");
1669 break;
1670
1671 case MD_INITALIAS:
1672 Verbose = 2;
1673 BlankEnvelope.e_errormode = EM_PRINT;
1674 HoldErrs = false;
1675 /* FALLTHROUGH */
1676
1677 default:
1678 /* arrange to exit cleanly on hangup signal */
1679 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL)
1680 (void) sm_signal(SIGHUP, intsig);
1681 break;
1682 }
1683
1684 /* special considerations for FullName */
1685 if (FullName != NULL)
1686 {
1687 char *full = NULL;
1688
1689 /* full names can't have newlines */
1690 if (strchr(FullName, '\n') != NULL)
1691 {
1692 full = newstr(denlstring(FullName, true, true));
1693 FullName = full;
1694 }
1695
1696 /* check for characters that may have to be quoted */
1697 if (!rfc822_string(FullName))
1698 {
1699 /*
1700 ** Quote a full name with special characters
1701 ** as a comment so crackaddr() doesn't destroy
1702 ** the name portion of the address.
1703 */
1704
1705 FullName = addquotes(FullName, NULL);
1706 if (full != NULL)
1707 sm_free(full); /* XXX */
1708 }
1709 }
1710
1711 /* do heuristic mode adjustment */
1712 if (Verbose)
1713 {
1714 /* turn off noconnect option */
1715 setoption('c', "F", true, false, &BlankEnvelope);
1716
1717 /* turn on interactive delivery */
1718 setoption('d', "", true, false, &BlankEnvelope);
1719 }
1720
1721 #ifdef VENDOR_CODE
1722 /* check for vendor mismatch */
1723 if (VendorCode != VENDOR_CODE)
1724 {
1725 message("Warning: .cf file vendor code mismatch: sendmail expects vendor %s, .cf file vendor is %s",
1726 getvendor(VENDOR_CODE), getvendor(VendorCode));
1727 }
1728 #endif /* VENDOR_CODE */
1729
1730 /* check for out of date configuration level */
1731 if (ConfigLevel < MAXCONFIGLEVEL)
1732 {
1733 message("Warning: .cf file is out of date: sendmail %s supports version %d, .cf file is version %d",
1734 Version, MAXCONFIGLEVEL, ConfigLevel);
1735 }
1736
1737 if (ConfigLevel < 3)
1738 UseErrorsTo = true;
1739
1740 /* set options that were previous macros */
1741 if (SmtpGreeting == NULL)
1742 {
1743 if (ConfigLevel < 7 &&
1744 (p = macvalue('e', &BlankEnvelope)) != NULL)
1745 SmtpGreeting = newstr(p);
1746 else
1747 SmtpGreeting = "\201j Sendmail \201v ready at \201b";
1748 }
1749 if (UnixFromLine == NULL)
1750 {
1751 if (ConfigLevel < 7 &&
1752 (p = macvalue('l', &BlankEnvelope)) != NULL)
1753 UnixFromLine = newstr(p);
1754 else
1755 UnixFromLine = "From \201g \201d";
1756 }
1757 SmtpError[0] = '\0';
1758
1759 /* our name for SMTP codes */
1760 expand("\201j", jbuf, sizeof(jbuf), &BlankEnvelope);
1761 if (jbuf[0] == '\0')
1762 PSTRSET(MyHostName, "localhost");
1763 else
1764 PSTRSET(MyHostName, jbuf);
1765 if (strchr(MyHostName, '.') == NULL)
1766 message("WARNING: local host name (%s) is not qualified; see cf/README: WHO AM I?",
1767 MyHostName);
1768
1769 /* make certain that this name is part of the $=w class */
1770 setclass('w', MyHostName);
1771
1772 /* fill in the structure of the *default* queue */
1773 st = stab("mqueue", ST_QUEUE, ST_FIND);
1774 if (st == NULL)
1775 syserr("No default queue (mqueue) defined");
1776 else
1777 set_def_queueval(st->s_quegrp, true);
1778
1779 /* the indices of built-in mailers */
1780 st = stab("local", ST_MAILER, ST_FIND);
1781 if (st != NULL)
1782 LocalMailer = st->s_mailer;
1783 else if (OpMode != MD_TEST || !warn_C_flag)
1784 syserr("No local mailer defined");
1785
1786 st = stab("prog", ST_MAILER, ST_FIND);
1787 if (st == NULL)
1788 syserr("No prog mailer defined");
1789 else
1790 {
1791 ProgMailer = st->s_mailer;
1792 clrbitn(M_MUSER, ProgMailer->m_flags);
1793 }
1794
1795 st = stab("*file*", ST_MAILER, ST_FIND);
1796 if (st == NULL)
1797 syserr("No *file* mailer defined");
1798 else
1799 {
1800 FileMailer = st->s_mailer;
1801 clrbitn(M_MUSER, FileMailer->m_flags);
1802 }
1803
1804 st = stab("*include*", ST_MAILER, ST_FIND);
1805 if (st == NULL)
1806 syserr("No *include* mailer defined");
1807 else
1808 InclMailer = st->s_mailer;
1809
1810 if (ConfigLevel < 6)
1811 {
1812 /* heuristic tweaking of local mailer for back compat */
1813 if (LocalMailer != NULL)
1814 {
1815 setbitn(M_ALIASABLE, LocalMailer->m_flags);
1816 setbitn(M_HASPWENT, LocalMailer->m_flags);
1817 setbitn(M_TRYRULESET5, LocalMailer->m_flags);
1818 setbitn(M_CHECKINCLUDE, LocalMailer->m_flags);
1819 setbitn(M_CHECKPROG, LocalMailer->m_flags);
1820 setbitn(M_CHECKFILE, LocalMailer->m_flags);
1821 setbitn(M_CHECKUDB, LocalMailer->m_flags);
1822 }
1823 if (ProgMailer != NULL)
1824 setbitn(M_RUNASRCPT, ProgMailer->m_flags);
1825 if (FileMailer != NULL)
1826 setbitn(M_RUNASRCPT, FileMailer->m_flags);
1827 }
1828 if (ConfigLevel < 7)
1829 {
1830 if (LocalMailer != NULL)
1831 setbitn(M_VRFY250, LocalMailer->m_flags);
1832 if (ProgMailer != NULL)
1833 setbitn(M_VRFY250, ProgMailer->m_flags);
1834 if (FileMailer != NULL)
1835 setbitn(M_VRFY250, FileMailer->m_flags);
1836 }
1837
1838 /* MIME Content-Types that cannot be transfer encoded */
1839 setclass('n', "multipart/signed");
1840
1841 /* MIME message/xxx subtypes that can be treated as messages */
1842 setclass('s', "rfc822");
1843
1844 /* MIME Content-Transfer-Encodings that can be encoded */
1845 setclass('e', "7bit");
1846 setclass('e', "8bit");
1847 setclass('e', "binary");
1848
1849 #ifdef USE_B_CLASS
1850 /* MIME Content-Types that should be treated as binary */
1851 setclass('b', "image");
1852 setclass('b', "audio");
1853 setclass('b', "video");
1854 setclass('b', "application/octet-stream");
1855 #endif /* USE_B_CLASS */
1856
1857 /* MIME headers which have fields to check for overflow */
1858 setclass(macid("{checkMIMEFieldHeaders}"), "content-disposition");
1859 setclass(macid("{checkMIMEFieldHeaders}"), "content-type");
1860
1861 /* MIME headers to check for length overflow */
1862 setclass(macid("{checkMIMETextHeaders}"), "content-description");
1863
1864 /* MIME headers to check for overflow and rebalance */
1865 setclass(macid("{checkMIMEHeaders}"), "content-disposition");
1866 setclass(macid("{checkMIMEHeaders}"), "content-id");
1867 setclass(macid("{checkMIMEHeaders}"), "content-transfer-encoding");
1868 setclass(macid("{checkMIMEHeaders}"), "content-type");
1869 setclass(macid("{checkMIMEHeaders}"), "mime-version");
1870
1871 /* Macros to save in the queue file -- don't remove any */
1872 setclass(macid("{persistentMacros}"), "r");
1873 setclass(macid("{persistentMacros}"), "s");
1874 setclass(macid("{persistentMacros}"), "_");
1875 setclass(macid("{persistentMacros}"), "{if_addr}");
1876 setclass(macid("{persistentMacros}"), "{daemon_flags}");
1877
1878 /* operate in queue directory */
1879 if (QueueDir == NULL || *QueueDir == '\0')
1880 {
1881 if (OpMode != MD_TEST)
1882 {
1883 syserr("QueueDirectory (Q) option must be set");
1884 ExitStat = EX_CONFIG;
1885 }
1886 }
1887 else
1888 {
1889 if (OpMode != MD_TEST)
1890 setup_queues(OpMode == MD_DAEMON);
1891 }
1892
1893 /* check host status directory for validity */
1894 if (HostStatDir != NULL && !path_is_dir(HostStatDir, false))
1895 {
1896 /* cannot use this value */
1897 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
1898 "Warning: Cannot use HostStatusDirectory = %s: %s\n",
1899 HostStatDir, sm_errstring(errno));
1900 HostStatDir = NULL;
1901 }
1902
1903 if (OpMode == MD_QUEUERUN &&
1904 RealUid != 0 && bitset(PRIV_RESTRICTQRUN, PrivacyFlags))
1905 {
1906 struct stat stbuf;
1907
1908 /* check to see if we own the queue directory */
1909 if (stat(".", &stbuf) < 0)
1910 syserr("main: cannot stat %s", QueueDir);
1911 if (stbuf.st_uid != RealUid)
1912 {
1913 /* nope, really a botch */
1914 HoldErrs = false;
1915 usrerr("You do not have permission to process the queue");
1916 finis(false, true, EX_NOPERM);
1917 /* NOTREACHED */
1918 }
1919 }
1920
1921 #if MILTER
1922 /* sanity checks on milter filters */
1923 if (OpMode == MD_DAEMON || OpMode == MD_SMTP)
1924 {
1925 milter_config(InputFilterList, InputFilters, MAXFILTERS);
1926 setup_daemon_milters();
1927 }
1928 #endif /* MILTER */
1929
1930 /* Convert queuegroup string to qgrp number */
1931 if (queuegroup != NULL)
1932 {
1933 qgrp = name2qid(queuegroup);
1934 if (qgrp == NOQGRP)
1935 {
1936 HoldErrs = false;
1937 usrerr("Queue group %s unknown", queuegroup);
1938 finis(false, true, ExitStat);
1939 /* NOTREACHED */
1940 }
1941 }
1942
1943 /* if checking config or have had errors so far, exit now */
1944 if (OpMode == MD_CHECKCONFIG || (ExitStat != EX_OK && OpMode != MD_TEST))
1945 {
1946 finis(false, true, ExitStat);
1947 /* NOTREACHED */
1948 }
1949
1950 #if SASL
1951 /* sendmail specific SASL initialization */
1952 sm_sasl_init();
1953 #endif /* SASL */
1954
1955 #if XDEBUG
1956 checkfd012("before main() initmaps");
1957 #endif /* XDEBUG */
1958
1959 /*
1960 ** Do operation-mode-dependent initialization.
1961 */
1962
1963 switch (OpMode)
1964 {
1965 case MD_PRINT:
1966 /* print the queue */
1967 HoldErrs = false;
1968 (void) dropenvelope(&BlankEnvelope, true, false);
1969 (void) sm_signal(SIGPIPE, sigpipe);
1970 if (qgrp != NOQGRP)
1971 {
1972 int j;
1973
1974 /* Selecting a particular queue group to run */
1975 for (j = 0; j < Queue[qgrp]->qg_numqueues; j++)
1976 {
1977 if (StopRequest)
1978 stop_sendmail();
1979 (void) print_single_queue(qgrp, j);
1980 }
1981 finis(false, true, EX_OK);
1982 /* NOTREACHED */
1983 }
1984 printqueue();
1985 finis(false, true, EX_OK);
1986 /* NOTREACHED */
1987 break;
1988
1989 case MD_PRINTNQE:
1990 /* print number of entries in queue */
1991 (void) dropenvelope(&BlankEnvelope, true, false);
1992 (void) sm_signal(SIGPIPE, sigpipe);
1993 printnqe(smioout, NULL);
1994 finis(false, true, EX_OK);
1995 /* NOTREACHED */
1996 break;
1997
1998 case MD_QUEUERUN:
1999 /* only handle quarantining here */
2000 if (quarantining == NULL)
2001 break;
2002
2003 if (QueueMode != QM_QUARANTINE &&
2004 QueueMode != QM_NORMAL)
2005 {
2006 HoldErrs = false;
2007 usrerr("Can not use -Q with -q%c", QueueMode);
2008 ExitStat = EX_USAGE;
2009 finis(false, true, ExitStat);
2010 /* NOTREACHED */
2011 }
2012 quarantine_queue(quarantining, qgrp);
2013 finis(false, true, EX_OK);
2014 break;
2015
2016 case MD_HOSTSTAT:
2017 (void) sm_signal(SIGPIPE, sigpipe);
2018 (void) mci_traverse_persistent(mci_print_persistent, NULL);
2019 finis(false, true, EX_OK);
2020 /* NOTREACHED */
2021 break;
2022
2023 case MD_PURGESTAT:
2024 (void) mci_traverse_persistent(mci_purge_persistent, NULL);
2025 finis(false, true, EX_OK);
2026 /* NOTREACHED */
2027 break;
2028
2029 case MD_INITALIAS:
2030 /* initialize maps */
2031 initmaps();
2032 finis(false, true, ExitStat);
2033 /* NOTREACHED */
2034 break;
2035
2036 case MD_SMTP:
2037 case MD_DAEMON:
2038 /* reset DSN parameters */
2039 DefaultNotify = QPINGONFAILURE|QPINGONDELAY;
2040 macdefine(&BlankEnvelope.e_macro, A_PERM,
2041 macid("{dsn_notify}"), NULL);
2042 BlankEnvelope.e_envid = NULL;
2043 macdefine(&BlankEnvelope.e_macro, A_PERM,
2044 macid("{dsn_envid}"), NULL);
2045 BlankEnvelope.e_flags &= ~(EF_RET_PARAM|EF_NO_BODY_RETN);
2046 macdefine(&BlankEnvelope.e_macro, A_PERM,
2047 macid("{dsn_ret}"), NULL);
2048
2049 /* don't open maps for daemon -- done below in child */
2050 break;
2051 }
2052
2053 if (tTd(0, 15))
2054 {
2055 /* print configuration table (or at least part of it) */
2056 if (tTd(0, 90))
2057 printrules();
2058 for (i = 0; i < MAXMAILERS; i++)
2059 {
2060 if (Mailer[i] != NULL)
2061 printmailer(sm_debug_file(), Mailer[i]);
2062 }
2063 }
2064
2065 /*
2066 ** Switch to the main envelope.
2067 */
2068
2069 CurEnv = newenvelope(&MainEnvelope, &BlankEnvelope,
2070 sm_rpool_new_x(NULL));
2071 MainEnvelope.e_flags = BlankEnvelope.e_flags;
2072
2073 /*
2074 ** If test mode, read addresses from stdin and process.
2075 */
2076
2077 if (OpMode == MD_TEST)
2078 {
2079 if (isatty(sm_io_getinfo(smioin, SM_IO_WHAT_FD, NULL)))
2080 Verbose = 2;
2081
2082 if (Verbose)
2083 {
2084 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
2085 "ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n");
2086 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
2087 "Enter <ruleset> <address>\n");
2088 }
2089 macdefine(&(MainEnvelope.e_macro), A_PERM,
2090 macid("{addr_type}"), "e r");
2091 for (;;)
2092 {
2093 SM_TRY
2094 {
2095 (void) sm_signal(SIGINT, intindebug);
2096 (void) sm_releasesignal(SIGINT);
2097 if (Verbose == 2)
2098 (void) sm_io_fprintf(smioout,
2099 SM_TIME_DEFAULT,
2100 "> ");
2101 (void) sm_io_flush(smioout, SM_TIME_DEFAULT);
2102 if (sm_io_fgets(smioin, SM_TIME_DEFAULT, buf,
2103 sizeof(buf)) == NULL)
2104 testmodeline("/quit", &MainEnvelope);
2105 p = strchr(buf, '\n');
2106 if (p != NULL)
2107 *p = '\0';
2108 if (Verbose < 2)
2109 (void) sm_io_fprintf(smioout,
2110 SM_TIME_DEFAULT,
2111 "> %s\n", buf);
2112 testmodeline(buf, &MainEnvelope);
2113 }
2114 SM_EXCEPT(exc, "[!F]*")
2115 {
2116 /*
2117 ** 8.10 just prints \n on interrupt.
2118 ** I'm printing the exception here in case
2119 ** sendmail is extended to raise additional
2120 ** exceptions in this context.
2121 */
2122
2123 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
2124 "\n");
2125 sm_exc_print(exc, smioout);
2126 }
2127 SM_END_TRY
2128 }
2129 }
2130
2131 #if STARTTLS
2132 tls_ok = true;
2133 if (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER ||
2134 OpMode == MD_ARPAFTP)
2135 {
2136 /* check whether STARTTLS is turned off for the client */
2137 if (chkclientmodifiers(D_NOTLS))
2138 tls_ok = false;
2139 }
2140 else if (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON ||
2141 OpMode == MD_SMTP)
2142 {
2143 /* check whether STARTTLS is turned off */
2144 if (chkdaemonmodifiers(D_NOTLS) && chkclientmodifiers(D_NOTLS))
2145 tls_ok = false;
2146 }
2147 else /* other modes don't need STARTTLS */
2148 tls_ok = false;
2149
2150 if (tls_ok)
2151 {
2152 /* basic TLS initialization */
2153 tls_ok = init_tls_library();
2154 }
2155
2156 if (!tls_ok && (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER))
2157 {
2158 /* disable TLS for client */
2159 setclttls(false);
2160 }
2161 #endif /* STARTTLS */
2162
2163 /*
2164 ** If collecting stuff from the queue, go start doing that.
2165 */
2166
2167 if (OpMode == MD_QUEUERUN && QueueIntvl == 0)
2168 {
2169 pid_t pid = -1;
2170
2171 #if STARTTLS
2172 /* init TLS for client, ignore result for now */
2173 (void) initclttls(tls_ok);
2174 #endif /* STARTTLS */
2175
2176 /*
2177 ** The parent process of the caller of runqueue() needs
2178 ** to stay around for a possible SIGTERM. The SIGTERM will
2179 ** tell this process that all of the queue runners children
2180 ** need to be sent SIGTERM as well. At the same time, we
2181 ** want to return control to the command line. So we do an
2182 ** extra fork().
2183 */
2184
2185 if (Verbose || foregroundqueue || (pid = fork()) <= 0)
2186 {
2187 /*
2188 ** If the fork() failed we should still try to do
2189 ** the queue run. If it succeeded then the child
2190 ** is going to start the run and wait for all
2191 ** of the children to finish.
2192 */
2193
2194 if (pid == 0)
2195 {
2196 /* Reset global flags */
2197 RestartRequest = NULL;
2198 ShutdownRequest = NULL;
2199 PendingSignal = 0;
2200
2201 /* disconnect from terminal */
2202 disconnect(2, CurEnv);
2203 }
2204
2205 CurrentPid = getpid();
2206 if (qgrp != NOQGRP)
2207 {
2208 int rwgflags = RWG_NONE;
2209
2210 /*
2211 ** To run a specific queue group mark it to
2212 ** be run, select the work group it's in and
2213 ** increment the work counter.
2214 */
2215
2216 for (i = 0; i < NumQueue && Queue[i] != NULL;
2217 i++)
2218 Queue[i]->qg_nextrun = (time_t) -1;
2219 Queue[qgrp]->qg_nextrun = 0;
2220 if (Verbose)
2221 rwgflags |= RWG_VERBOSE;
2222 if (queuepersistent)
2223 rwgflags |= RWG_PERSISTENT;
2224 rwgflags |= RWG_FORCE;
2225 (void) run_work_group(Queue[qgrp]->qg_wgrp,
2226 rwgflags);
2227 }
2228 else
2229 (void) runqueue(false, Verbose,
2230 queuepersistent, true);
2231
2232 /* set the title to make it easier to find */
2233 sm_setproctitle(true, CurEnv, "Queue control");
2234 (void) sm_signal(SIGCHLD, SIG_DFL);
2235 while (CurChildren > 0)
2236 {
2237 int status;
2238 pid_t ret;
2239
2240 errno = 0;
2241 while ((ret = sm_wait(&status)) <= 0)
2242 {
2243 if (errno == ECHILD)
2244 {
2245 /*
2246 ** Oops... something got messed
2247 ** up really bad. Waiting for
2248 ** non-existent children
2249 ** shouldn't happen. Let's get
2250 ** out of here.
2251 */
2252
2253 CurChildren = 0;
2254 break;
2255 }
2256 continue;
2257 }
2258
2259 /* something is really really wrong */
2260 if (errno == ECHILD)
2261 {
2262 sm_syslog(LOG_ERR, NOQID,
2263 "queue control process: lost all children: wait returned ECHILD");
2264 break;
2265 }
2266
2267 /* Only drop when a child gives status */
2268 if (WIFSTOPPED(status))
2269 continue;
2270
2271 proc_list_drop(ret, status, NULL);
2272 }
2273 }
2274 finis(true, true, ExitStat);
2275 /* NOTREACHED */
2276 }
2277
2278 # if SASL
2279 if (OpMode == MD_SMTP || OpMode == MD_DAEMON)
2280 {
2281 /* check whether AUTH is turned off for the server */
2282 if (!chkdaemonmodifiers(D_NOAUTH) &&
2283 (i = sasl_server_init(srvcallbacks, "Sendmail")) != SASL_OK)
2284 syserr("!sasl_server_init failed! [%s]",
2285 sasl_errstring(i, NULL, NULL));
2286 }
2287 # endif /* SASL */
2288
2289 if (OpMode == MD_SMTP)
2290 {
2291 proc_list_add(CurrentPid, "Sendmail SMTP Agent",
2292 PROC_DAEMON, 0, -1, NULL);
2293
2294 /* clean up background delivery children */
2295 (void) sm_signal(SIGCHLD, reapchild);
2296 }
2297
2298 /*
2299 ** If a daemon, wait for a request.
2300 ** getrequests will always return in a child.
2301 ** If we should also be processing the queue, start
2302 ** doing it in background.
2303 ** We check for any errors that might have happened
2304 ** during startup.
2305 */
2306
2307 if (OpMode == MD_DAEMON || QueueIntvl > 0)
2308 {
2309 char dtype[200];
2310
2311 /* avoid cleanup in finis(), DaemonPid will be set below */
2312 DaemonPid = 0;
2313 if (!run_in_foreground && !tTd(99, 100))
2314 {
2315 /* put us in background */
2316 i = fork();
2317 if (i < 0)
2318 syserr("daemon: cannot fork");
2319 if (i != 0)
2320 {
2321 finis(false, true, EX_OK);
2322 /* NOTREACHED */
2323 }
2324
2325 /*
2326 ** Initialize exception stack and default exception
2327 ** handler for child process.
2328 */
2329
2330 /* Reset global flags */
2331 RestartRequest = NULL;
2332 RestartWorkGroup = false;
2333 ShutdownRequest = NULL;
2334 PendingSignal = 0;
2335 CurrentPid = getpid();
2336
2337 sm_exc_newthread(fatal_error);
2338
2339 /* disconnect from our controlling tty */
2340 disconnect(2, &MainEnvelope);
2341 }
2342
2343 dtype[0] = '\0';
2344 if (OpMode == MD_DAEMON)
2345 {
2346 (void) sm_strlcat(dtype, "+SMTP", sizeof(dtype));
2347 DaemonPid = CurrentPid;
2348 }
2349 if (QueueIntvl > 0)
2350 {
2351 (void) sm_strlcat2(dtype,
2352 queuepersistent
2353 ? "+persistent-queueing@"
2354 : "+queueing@",
2355 pintvl(QueueIntvl, true),
2356 sizeof(dtype));
2357 }
2358 if (tTd(0, 1))
2359 (void) sm_strlcat(dtype, "+debugging", sizeof(dtype));
2360
2361 sm_syslog(LOG_INFO, NOQID,
2362 "starting daemon (%s): %s", Version, dtype + 1);
2363 #if XLA
2364 xla_create_file();
2365 #endif /* XLA */
2366
2367 /* save daemon type in a macro for possible PidFile use */
2368 macdefine(&BlankEnvelope.e_macro, A_TEMP,
2369 macid("{daemon_info}"), dtype + 1);
2370
2371 /* save queue interval in a macro for possible PidFile use */
2372 macdefine(&MainEnvelope.e_macro, A_TEMP,
2373 macid("{queue_interval}"), pintvl(QueueIntvl, true));
2374
2375 /* workaround: can't seem to release the signal in the parent */
2376 (void) sm_signal(SIGHUP, sighup);
2377 (void) sm_releasesignal(SIGHUP);
2378 (void) sm_signal(SIGTERM, sigterm);
2379
2380 if (QueueIntvl > 0)
2381 {
2382 #if _FFR_RUNPQG
2383 if (qgrp != NOQGRP)
2384 {
2385 int rwgflags = RWG_NONE;
2386
2387 /*
2388 ** To run a specific queue group mark it to
2389 ** be run, select the work group it's in and
2390 ** increment the work counter.
2391 */
2392
2393 for (i = 0; i < NumQueue && Queue[i] != NULL;
2394 i++)
2395 Queue[i]->qg_nextrun = (time_t) -1;
2396 Queue[qgrp]->qg_nextrun = 0;
2397 if (Verbose)
2398 rwgflags |= RWG_VERBOSE;
2399 if (queuepersistent)
2400 rwgflags |= RWG_PERSISTENT;
2401 rwgflags |= RWG_FORCE;
2402 (void) run_work_group(Queue[qgrp]->qg_wgrp,
2403 rwgflags);
2404 }
2405 else
2406 #endif /* _FFR_RUNPQG */
2407 (void) runqueue(true, false, queuepersistent,
2408 true);
2409
2410 /*
2411 ** If queuepersistent but not in daemon mode then
2412 ** we're going to do the queue runner monitoring here.
2413 ** If in daemon mode then the monitoring will happen
2414 ** elsewhere.
2415 */
2416
2417 if (OpMode != MD_DAEMON && queuepersistent)
2418 {
2419 /*
2420 ** Write the pid to file
2421 ** XXX Overwrites sendmail.pid
2422 */
2423
2424 log_sendmail_pid(&MainEnvelope);
2425
2426 /* set the title to make it easier to find */
2427 sm_setproctitle(true, CurEnv, "Queue control");
2428 (void) sm_signal(SIGCHLD, SIG_DFL);
2429 while (CurChildren > 0)
2430 {
2431 int status;
2432 pid_t ret;
2433 int group;
2434
2435 CHECK_RESTART;
2436 errno = 0;
2437 while ((ret = sm_wait(&status)) <= 0)
2438 {
2439 /*
2440 ** Waiting for non-existent
2441 ** children shouldn't happen.
2442 ** Let's get out of here if
2443 ** it occurs.
2444 */
2445
2446 if (errno == ECHILD)
2447 {
2448 CurChildren = 0;
2449 break;
2450 }
2451 continue;
2452 }
2453
2454 /* something is really really wrong */
2455 if (errno == ECHILD)
2456 {
2457 sm_syslog(LOG_ERR, NOQID,
2458 "persistent queue runner control process: lost all children: wait returned ECHILD");
2459 break;
2460 }
2461
2462 if (WIFSTOPPED(status))
2463 continue;
2464
2465 /* Probe only on a child status */
2466 proc_list_drop(ret, status, &group);
2467
2468 if (WIFSIGNALED(status))
2469 {
2470 if (WCOREDUMP(status))
2471 {
2472 sm_syslog(LOG_ERR, NOQID,
2473 "persistent queue runner=%d core dumped, signal=%d",
2474 group, WTERMSIG(status));
2475
2476 /* don't restart this */
2477 mark_work_group_restart(
2478 group, -1);
2479 continue;
2480 }
2481
2482 sm_syslog(LOG_ERR, NOQID,
2483 "persistent queue runner=%d died, pid=%ld, signal=%d",
2484 group, (long) ret,
2485 WTERMSIG(status));
2486 }
2487
2488 /*
2489 ** When debugging active, don't
2490 ** restart the persistent queues.
2491 ** But do log this as info.
2492 */
2493
2494 if (sm_debug_active(&DebugNoPRestart,
2495 1))
2496 {
2497 sm_syslog(LOG_DEBUG, NOQID,
2498 "persistent queue runner=%d, exited",
2499 group);
2500 mark_work_group_restart(group,
2501 -1);
2502 }
2503 CHECK_RESTART;
2504 }
2505 finis(true, true, ExitStat);
2506 /* NOTREACHED */
2507 }
2508
2509 if (OpMode != MD_DAEMON)
2510 {
2511 char qtype[200];
2512
2513 /*
2514 ** Write the pid to file
2515 ** XXX Overwrites sendmail.pid
2516 */
2517
2518 log_sendmail_pid(&MainEnvelope);
2519
2520 /* set the title to make it easier to find */
2521 qtype[0] = '\0';
2522 (void) sm_strlcpyn(qtype, sizeof(qtype), 4,
2523 "Queue runner@",
2524 pintvl(QueueIntvl, true),
2525 " for ",
2526 QueueDir);
2527 sm_setproctitle(true, CurEnv, qtype);
2528 for (;;)
2529 {
2530 (void) pause();
2531
2532 CHECK_RESTART;
2533
2534 if (doqueuerun())
2535 (void) runqueue(true, false,
2536 false, false);
2537 }
2538 }
2539 }
2540 (void) dropenvelope(&MainEnvelope, true, false);
2541
2542 #if STARTTLS
2543 /* init TLS for server, ignore result for now */
2544 (void) initsrvtls(tls_ok);
2545 #endif /* STARTTLS */
2546
2547 nextreq:
2548 p_flags = getrequests(&MainEnvelope);
2549
2550 /* drop privileges */
2551 (void) drop_privileges(false);
2552
2553 /*
2554 ** Get authentication data
2555 ** Set _ macro in BlankEnvelope before calling newenvelope().
2556 */
2557
2558 authinfo = getauthinfo(sm_io_getinfo(InChannel, SM_IO_WHAT_FD,
2559 NULL), &forged);
2560 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo);
2561
2562 /* at this point we are in a child: reset state */
2563 sm_rpool_free(MainEnvelope.e_rpool);
2564 (void) newenvelope(&MainEnvelope, &MainEnvelope,
2565 sm_rpool_new_x(NULL));
2566 }
2567
2568 if (LogLevel > 9)
2569 {
2570 /* log connection information */
2571 sm_syslog(LOG_INFO, NULL, "connect from %s", authinfo);
2572 }
2573
2574 /*
2575 ** If running SMTP protocol, start collecting and executing
2576 ** commands. This will never return.
2577 */
2578
2579 if (OpMode == MD_SMTP || OpMode == MD_DAEMON)
2580 {
2581 char pbuf[20];
2582
2583 /*
2584 ** Save some macros for check_* rulesets.
2585 */
2586
2587 if (forged)
2588 {
2589 char ipbuf[103];
2590
2591 (void) sm_snprintf(ipbuf, sizeof(ipbuf), "[%.100s]",
2592 anynet_ntoa(&RealHostAddr));
2593 macdefine(&BlankEnvelope.e_macro, A_TEMP,
2594 macid("{client_name}"), ipbuf);
2595 }
2596 else
2597 macdefine(&BlankEnvelope.e_macro, A_PERM,
2598 macid("{client_name}"), RealHostName);
2599 macdefine(&BlankEnvelope.e_macro, A_PERM,
2600 macid("{client_ptr}"), RealHostName);
2601 macdefine(&BlankEnvelope.e_macro, A_TEMP,
2602 macid("{client_addr}"), anynet_ntoa(&RealHostAddr));
2603 sm_getla();
2604
2605 switch (RealHostAddr.sa.sa_family)
2606 {
2607 #if NETINET
2608 case AF_INET:
2609 (void) sm_snprintf(pbuf, sizeof(pbuf), "%d",
2610 RealHostAddr.sin.sin_port);
2611 break;
2612 #endif /* NETINET */
2613 #if NETINET6
2614 case AF_INET6:
2615 (void) sm_snprintf(pbuf, sizeof(pbuf), "%d",
2616 RealHostAddr.sin6.sin6_port);
2617 break;
2618 #endif /* NETINET6 */
2619 default:
2620 (void) sm_snprintf(pbuf, sizeof(pbuf), "0");
2621 break;
2622 }
2623 macdefine(&BlankEnvelope.e_macro, A_TEMP,
2624 macid("{client_port}"), pbuf);
2625
2626 if (OpMode == MD_DAEMON)
2627 {
2628 ENVELOPE *saved_env;
2629
2630 /* validate the connection */
2631 HoldErrs = true;
2632 saved_env = CurEnv;
2633 CurEnv = &BlankEnvelope;
2634 nullserver = validate_connection(&RealHostAddr,
2635 macvalue(macid("{client_name}"),
2636 &BlankEnvelope),
2637 &BlankEnvelope);
2638 if (bitset(EF_DISCARD, BlankEnvelope.e_flags))
2639 MainEnvelope.e_flags |= EF_DISCARD;
2640 CurEnv = saved_env;
2641 HoldErrs = false;
2642 }
2643 else if (p_flags == NULL)
2644 {
2645 p_flags = (BITMAP256 *) xalloc(sizeof(*p_flags));
2646 clrbitmap(p_flags);
2647 }
2648 #if STARTTLS
2649 if (OpMode == MD_SMTP)
2650 (void) initsrvtls(tls_ok);
2651 #endif /* STARTTLS */
2652
2653 /* turn off profiling */
2654 SM_PROF(1);
2655 smtp(nullserver, *p_flags, &MainEnvelope);
2656
2657 if (tTd(93, 100))
2658 {
2659 /* turn off profiling */
2660 SM_PROF(0);
2661 if (OpMode == MD_DAEMON)
2662 goto nextreq;
2663 }
2664 }
2665
2666 sm_rpool_free(MainEnvelope.e_rpool);
2667 clearenvelope(&MainEnvelope, false, sm_rpool_new_x(NULL));
2668 if (OpMode == MD_VERIFY)
2669 {
2670 set_delivery_mode(SM_VERIFY, &MainEnvelope);
2671 PostMasterCopy = NULL;
2672 }
2673 else
2674 {
2675 /* interactive -- all errors are global */
2676 MainEnvelope.e_flags |= EF_GLOBALERRS|EF_LOGSENDER;
2677 }
2678
2679 /*
2680 ** Do basic system initialization and set the sender
2681 */
2682
2683 initsys(&MainEnvelope);
2684 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{ntries}"), "0");
2685 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{nrcpts}"), "0");
2686 setsender(from, &MainEnvelope, NULL, '\0', false);
2687 if (warn_f_flag != '\0' && !wordinclass(RealUserName, 't') &&
2688 (!bitnset(M_LOCALMAILER, MainEnvelope.e_from.q_mailer->m_flags) ||
2689 strcmp(MainEnvelope.e_from.q_user, RealUserName) != 0))
2690 {
2691 auth_warning(&MainEnvelope, "%s set sender to %s using -%c",
2692 RealUserName, from, warn_f_flag);
2693 #if SASL
2694 auth = false;
2695 #endif /* SASL */
2696 }
2697 if (auth)
2698 {
2699 char *fv;
2700
2701 /* set the initial sender for AUTH= to $f@$j */
2702 fv = macvalue('f', &MainEnvelope);
2703 if (fv == NULL || *fv == '\0')
2704 MainEnvelope.e_auth_param = NULL;
2705 else
2706 {
2707 if (strchr(fv, '@') == NULL)
2708 {
2709 i = strlen(fv) + strlen(macvalue('j',
2710 &MainEnvelope)) + 2;
2711 p = sm_malloc_x(i);
2712 (void) sm_strlcpyn(p, i, 3, fv, "@",
2713 macvalue('j',
2714 &MainEnvelope));
2715 }
2716 else
2717 p = sm_strdup_x(fv);
2718 MainEnvelope.e_auth_param = sm_rpool_strdup_x(MainEnvelope.e_rpool,
2719 xtextify(p, "="));
2720 sm_free(p); /* XXX */
2721 }
2722 }
2723 if (macvalue('s', &MainEnvelope) == NULL)
2724 macdefine(&MainEnvelope.e_macro, A_PERM, 's', RealHostName);
2725
2726 av = argv + optind;
2727 if (*av == NULL && !GrabTo)
2728 {
2729 MainEnvelope.e_to = NULL;
2730 MainEnvelope.e_flags |= EF_GLOBALERRS;
2731 HoldErrs = false;
2732 SuperSafe = SAFE_NO;
2733 usrerr("Recipient names must be specified");
2734
2735 /* collect body for UUCP return */
2736 if (OpMode != MD_VERIFY)
2737 collect(InChannel, false, NULL, &MainEnvelope, true);
2738 finis(true, true, EX_USAGE);
2739 /* NOTREACHED */
2740 }
2741
2742 /*
2743 ** Scan argv and deliver the message to everyone.
2744 */
2745
2746 save_val = LogUsrErrs;
2747 LogUsrErrs = true;
2748 sendtoargv(av, &MainEnvelope);
2749 LogUsrErrs = save_val;
2750
2751 /* if we have had errors sofar, arrange a meaningful exit stat */
2752 if (Errors > 0 && ExitStat == EX_OK)
2753 ExitStat = EX_USAGE;
2754
2755 #if _FFR_FIX_DASHT
2756 /*
2757 ** If using -t, force not sending to argv recipients, even
2758 ** if they are mentioned in the headers.
2759 */
2760
2761 if (GrabTo)
2762 {
2763 ADDRESS *q;
2764
2765 for (q = MainEnvelope.e_sendqueue; q != NULL; q = q->q_next)
2766 q->q_state = QS_REMOVED;
2767 }
2768 #endif /* _FFR_FIX_DASHT */
2769
2770 /*
2771 ** Read the input mail.
2772 */
2773
2774 MainEnvelope.e_to = NULL;
2775 if (OpMode != MD_VERIFY || GrabTo)
2776 {
2777 int savederrors;
2778 unsigned long savedflags;
2779
2780 /*
2781 ** workaround for compiler warning on Irix:
2782 ** do not initialize variable in the definition, but
2783 ** later on:
2784 ** warning(1548): transfer of control bypasses
2785 ** initialization of:
2786 ** variable "savederrors" (declared at line 2570)
2787 ** variable "savedflags" (declared at line 2571)
2788 ** goto giveup;
2789 */
2790
2791 savederrors = Errors;
2792 savedflags = MainEnvelope.e_flags & EF_FATALERRS;
2793 MainEnvelope.e_flags |= EF_GLOBALERRS;
2794 MainEnvelope.e_flags &= ~EF_FATALERRS;
2795 Errors = 0;
2796 buffer_errors();
2797 collect(InChannel, false, NULL, &MainEnvelope, true);
2798
2799 /* header checks failed */
2800 if (Errors > 0)
2801 {
2802 giveup:
2803 if (!GrabTo)
2804 {
2805 /* Log who the mail would have gone to */
2806 logundelrcpts(&MainEnvelope,
2807 MainEnvelope.e_message,
2808 8, false);
2809 }
2810 flush_errors(true);
2811 finis(true, true, ExitStat);
2812 /* NOTREACHED */
2813 return -1;
2814 }
2815
2816 /* bail out if message too large */
2817 if (bitset(EF_CLRQUEUE, MainEnvelope.e_flags))
2818 {
2819 finis(true, true, ExitStat != EX_OK ? ExitStat
2820 : EX_DATAERR);
2821 /* NOTREACHED */
2822 return -1;
2823 }
2824
2825 /* set message size */
2826 (void) sm_snprintf(buf, sizeof(buf), "%ld",
2827 MainEnvelope.e_msgsize);
2828 macdefine(&MainEnvelope.e_macro, A_TEMP,
2829 macid("{msg_size}"), buf);
2830
2831 Errors = savederrors;
2832 MainEnvelope.e_flags |= savedflags;
2833 }
2834 errno = 0;
2835
2836 if (tTd(1, 1))
2837 sm_dprintf("From person = \"%s\"\n",
2838 MainEnvelope.e_from.q_paddr);
2839
2840 /* Check if quarantining stats should be updated */
2841 if (MainEnvelope.e_quarmsg != NULL)
2842 markstats(&MainEnvelope, NULL, STATS_QUARANTINE);
2843
2844 /*
2845 ** Actually send everything.
2846 ** If verifying, just ack.
2847 */
2848
2849 if (Errors == 0)
2850 {
2851 if (!split_by_recipient(&MainEnvelope) &&
2852 bitset(EF_FATALERRS, MainEnvelope.e_flags))
2853 goto giveup;
2854 }
2855
2856 /* make sure we deliver at least the first envelope */
2857 i = FastSplit > 0 ? 0 : -1;
2858 for (e = &MainEnvelope; e != NULL; e = e->e_sibling, i++)
2859 {
2860 ENVELOPE *next;
2861
2862 e->e_from.q_state = QS_SENDER;
2863 if (tTd(1, 5))
2864 {
2865 sm_dprintf("main[%d]: QS_SENDER ", i);
2866 printaddr(sm_debug_file(), &e->e_from, false);
2867 }
2868 e->e_to = NULL;
2869 sm_getla();
2870 GrabTo = false;
2871 #if NAMED_BIND
2872 _res.retry = TimeOuts.res_retry[RES_TO_FIRST];
2873 _res.retrans = TimeOuts.res_retrans[RES_TO_FIRST];
2874 #endif /* NAMED_BIND */
2875 next = e->e_sibling;
2876 e->e_sibling = NULL;
2877
2878 /* after FastSplit envelopes: queue up */
2879 sendall(e, i >= FastSplit ? SM_QUEUE : SM_DEFAULT);
2880 e->e_sibling = next;
2881 }
2882
2883 /*
2884 ** All done.
2885 ** Don't send return error message if in VERIFY mode.
2886 */
2887
2888 finis(true, true, ExitStat);
2889 /* NOTREACHED */
2890 return ExitStat;
2891 }
2892 /*
2893 ** STOP_SENDMAIL -- Stop the running program
2894 **
2895 ** Parameters:
2896 ** none.
2897 **
2898 ** Returns:
2899 ** none.
2900 **
2901 ** Side Effects:
2902 ** exits.
2903 */
2904
2905 void
2906 stop_sendmail()
2907 {
2908 /* reset uid for process accounting */
2909 endpwent();
2910 (void) setuid(RealUid);
2911 exit(EX_OK);
2912 }
2913 /*
2914 ** FINIS -- Clean up and exit.
2915 **
2916 ** Parameters:
2917 ** drop -- whether or not to drop CurEnv envelope
2918 ** cleanup -- call exit() or _exit()?
2919 ** exitstat -- exit status to use for exit() call
2920 **
2921 ** Returns:
2922 ** never
2923 **
2924 ** Side Effects:
2925 ** exits sendmail
2926 */
2927
2928 void
2929 finis(drop, cleanup, exitstat)
2930 bool drop;
2931 bool cleanup;
2932 volatile int exitstat;
2933 {
2934 char pidpath[MAXPATHLEN];
2935 pid_t pid;
2936
2937 /* Still want to process new timeouts added below */
2938 sm_clear_events();
2939 (void) sm_releasesignal(SIGALRM);
2940
2941 if (tTd(2, 1))
2942 {
2943 sm_dprintf("\n====finis: stat %d e_id=%s e_flags=",
2944 exitstat,
2945 CurEnv->e_id == NULL ? "NOQUEUE" : CurEnv->e_id);
2946 printenvflags(CurEnv);
2947 }
2948 if (tTd(2, 9))
2949 printopenfds(false);
2950
2951 SM_TRY
2952 /*
2953 ** Clean up. This might raise E:mta.quickabort
2954 */
2955
2956 /* clean up temp files */
2957 CurEnv->e_to = NULL;
2958 if (drop)
2959 {
2960 if (CurEnv->e_id != NULL)
2961 {
2962 int r;
2963
2964 r = dropenvelope(CurEnv, true, false);
2965 if (exitstat == EX_OK)
2966 exitstat = r;
2967 sm_rpool_free(CurEnv->e_rpool);
2968 CurEnv->e_rpool = NULL;
2969
2970 /* these may have pointed to the rpool */
2971 CurEnv->e_to = NULL;
2972 CurEnv->e_message = NULL;
2973 CurEnv->e_statmsg = NULL;
2974 CurEnv->e_quarmsg = NULL;
2975 CurEnv->e_bodytype = NULL;
2976 CurEnv->e_id = NULL;
2977 CurEnv->e_envid = NULL;
2978 CurEnv->e_auth_param = NULL;
2979 }
2980 else
2981 poststats(StatFile);
2982 }
2983
2984 /* flush any cached connections */
2985 mci_flush(true, NULL);
2986
2987 /* close maps belonging to this pid */
2988 closemaps(false);
2989
2990 #if USERDB
2991 /* close UserDatabase */
2992 _udbx_close();
2993 #endif /* USERDB */
2994
2995 #if SASL
2996 stop_sasl_client();
2997 #endif /* SASL */
2998
2999 #if XLA
3000 /* clean up extended load average stuff */
3001 xla_all_end();
3002 #endif /* XLA */
3003
3004 SM_FINALLY
3005 /*
3006 ** And exit.
3007 */
3008
3009 if (LogLevel > 78)
3010 sm_syslog(LOG_DEBUG, CurEnv->e_id, "finis, pid=%d",
3011 (int) CurrentPid);
3012 if (exitstat == EX_TEMPFAIL ||
3013 CurEnv->e_errormode == EM_BERKNET)
3014 exitstat = EX_OK;
3015
3016 /* XXX clean up queues and related data structures */
3017 cleanup_queues();
3018 pid = getpid();
3019 #if SM_CONF_SHM
3020 cleanup_shm(DaemonPid == pid);
3021 #endif /* SM_CONF_SHM */
3022
3023 /* close locked pid file */
3024 close_sendmail_pid();
3025
3026 if (DaemonPid == pid || PidFilePid == pid)
3027 {
3028 /* blow away the pid file */
3029 expand(PidFile, pidpath, sizeof(pidpath), CurEnv);
3030 (void) unlink(pidpath);
3031 }
3032
3033 /* reset uid for process accounting */
3034 endpwent();
3035 sm_mbdb_terminate();
3036 #if _FFR_MEMSTAT
3037 (void) sm_memstat_close();
3038 #endif /* _FFR_MEMSTAT */
3039 (void) setuid(RealUid);
3040 #if SM_HEAP_CHECK
3041 /* dump the heap, if we are checking for memory leaks */
3042 if (sm_debug_active(&SmHeapCheck, 2))
3043 sm_heap_report(smioout,
3044 sm_debug_level(&SmHeapCheck) - 1);
3045 #endif /* SM_HEAP_CHECK */
3046 if (sm_debug_active(&SmXtrapReport, 1))
3047 sm_dprintf("xtrap count = %d\n", SmXtrapCount);
3048 if (cleanup)
3049 exit(exitstat);
3050 else
3051 _exit(exitstat);
3052 SM_END_TRY
3053 }
3054 /*
3055 ** INTINDEBUG -- signal handler for SIGINT in -bt mode
3056 **
3057 ** Parameters:
3058 ** sig -- incoming signal.
3059 **
3060 ** Returns:
3061 ** none.
3062 **
3063 ** Side Effects:
3064 ** longjmps back to test mode loop.
3065 **
3066 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
3067 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
3068 ** DOING.
3069 */
3070
3071 /* Type of an exception generated on SIGINT during address test mode. */
3072 static const SM_EXC_TYPE_T EtypeInterrupt =
3073 {
3074 SmExcTypeMagic,
3075 "S:mta.interrupt",
3076 "",
3077 sm_etype_printf,
3078 "interrupt",
3079 };
3080
3081 /* ARGSUSED */
3082 static SIGFUNC_DECL
3083 intindebug(sig)
3084 int sig;
3085 {
3086 int save_errno = errno;
3087
3088 FIX_SYSV_SIGNAL(sig, intindebug);
3089 errno = save_errno;
3090 CHECK_CRITICAL(sig);
3091 errno = save_errno;
3092 sm_exc_raisenew_x(&EtypeInterrupt);
3093 errno = save_errno;
3094 return SIGFUNC_RETURN;
3095 }
3096 /*
3097 ** SIGTERM -- SIGTERM handler for the daemon
3098 **
3099 ** Parameters:
3100 ** sig -- signal number.
3101 **
3102 ** Returns:
3103 ** none.
3104 **
3105 ** Side Effects:
3106 ** Sets ShutdownRequest which will hopefully trigger
3107 ** the daemon to exit.
3108 **
3109 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
3110 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
3111 ** DOING.
3112 */
3113
3114 /* ARGSUSED */
3115 static SIGFUNC_DECL
3116 sigterm(sig)
3117 int sig;
3118 {
3119 int save_errno = errno;
3120
3121 FIX_SYSV_SIGNAL(sig, sigterm);
3122 ShutdownRequest = "signal";
3123 errno = save_errno;
3124 return SIGFUNC_RETURN;
3125 }
3126 /*
3127 ** SIGHUP -- handle a SIGHUP signal
3128 **
3129 ** Parameters:
3130 ** sig -- incoming signal.
3131 **
3132 ** Returns:
3133 ** none.
3134 **
3135 ** Side Effects:
3136 ** Sets RestartRequest which should cause the daemon
3137 ** to restart.
3138 **
3139 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
3140 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
3141 ** DOING.
3142 */
3143
3144 /* ARGSUSED */
3145 static SIGFUNC_DECL
3146 sighup(sig)
3147 int sig;
3148 {
3149 int save_errno = errno;
3150
3151 FIX_SYSV_SIGNAL(sig, sighup);
3152 RestartRequest = "signal";
3153 errno = save_errno;
3154 return SIGFUNC_RETURN;
3155 }
3156 /*
3157 ** SIGPIPE -- signal handler for SIGPIPE
3158 **
3159 ** Parameters:
3160 ** sig -- incoming signal.
3161 **
3162 ** Returns:
3163 ** none.
3164 **
3165 ** Side Effects:
3166 ** Sets StopRequest which should cause the mailq/hoststatus
3167 ** display to stop.
3168 **
3169 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
3170 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
3171 ** DOING.
3172 */
3173
3174 /* ARGSUSED */
3175 static SIGFUNC_DECL
3176 sigpipe(sig)
3177 int sig;
3178 {
3179 int save_errno = errno;
3180
3181 FIX_SYSV_SIGNAL(sig, sigpipe);
3182 StopRequest = true;
3183 errno = save_errno;
3184 return SIGFUNC_RETURN;
3185 }
3186 /*
3187 ** INTSIG -- clean up on interrupt
3188 **
3189 ** This just arranges to exit. It pessimizes in that it
3190 ** may resend a message.
3191 **
3192 ** Parameters:
3193 ** none.
3194 **
3195 ** Returns:
3196 ** none.
3197 **
3198 ** Side Effects:
3199 ** Unlocks the current job.
3200 **
3201 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
3202 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
3203 ** DOING.
3204 **
3205 ** XXX: More work is needed for this signal handler.
3206 */
3207
3208 /* ARGSUSED */
3209 SIGFUNC_DECL
3210 intsig(sig)
3211 int sig;
3212 {
3213 bool drop = false;
3214 int save_errno = errno;
3215
3216 FIX_SYSV_SIGNAL(sig, intsig);
3217 errno = save_errno;
3218 CHECK_CRITICAL(sig);
3219 sm_allsignals(true);
3220
3221 if (sig != 0 && LogLevel > 79)
3222 sm_syslog(LOG_DEBUG, CurEnv->e_id, "interrupt");
3223 FileName = NULL;
3224
3225 /* Clean-up on aborted stdin message submission */
3226 if (CurEnv->e_id != NULL &&
3227 (OpMode == MD_SMTP ||
3228 OpMode == MD_DELIVER ||
3229 OpMode == MD_ARPAFTP))
3230 {
3231 register ADDRESS *q;
3232
3233 /* don't return an error indication */
3234 CurEnv->e_to = NULL;
3235 CurEnv->e_flags &= ~EF_FATALERRS;
3236 CurEnv->e_flags |= EF_CLRQUEUE;
3237
3238 /*
3239 ** Spin through the addresses and
3240 ** mark them dead to prevent bounces
3241 */
3242
3243 for (q = CurEnv->e_sendqueue; q != NULL; q = q->q_next)
3244 q->q_state = QS_DONTSEND;
3245
3246 drop = true;
3247 }
3248 else if (OpMode != MD_TEST)
3249 {
3250 unlockqueue(CurEnv);
3251 }
3252
3253 finis(drop, false, EX_OK);
3254 /* NOTREACHED */
3255 }
3256 /*
3257 ** DISCONNECT -- remove our connection with any foreground process
3258 **
3259 ** Parameters:
3260 ** droplev -- how "deeply" we should drop the line.
3261 ** 0 -- ignore signals, mail back errors, make sure
3262 ** output goes to stdout.
3263 ** 1 -- also, make stdout go to /dev/null.
3264 ** 2 -- also, disconnect from controlling terminal
3265 ** (only for daemon mode).
3266 ** e -- the current envelope.
3267 **
3268 ** Returns:
3269 ** none
3270 **
3271 ** Side Effects:
3272 ** Trys to insure that we are immune to vagaries of
3273 ** the controlling tty.
3274 */
3275
3276 void
3277 disconnect(droplev, e)
3278 int droplev;
3279 register ENVELOPE *e;
3280 {
3281 int fd;
3282
3283 if (tTd(52, 1))
3284 sm_dprintf("disconnect: In %d Out %d, e=%p\n",
3285 sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL),
3286 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL), e);
3287 if (tTd(52, 100))
3288 {
3289 sm_dprintf("don't\n");
3290 return;
3291 }
3292 if (LogLevel > 93)
3293 sm_syslog(LOG_DEBUG, e->e_id,
3294 "disconnect level %d",
3295 droplev);
3296
3297 /* be sure we don't get nasty signals */
3298 (void) sm_signal(SIGINT, SIG_IGN);
3299 (void) sm_signal(SIGQUIT, SIG_IGN);
3300
3301 /* we can't communicate with our caller, so.... */
3302 HoldErrs = true;
3303 CurEnv->e_errormode = EM_MAIL;
3304 Verbose = 0;
3305 DisConnected = true;
3306
3307 /* all input from /dev/null */
3308 if (InChannel != smioin)
3309 {
3310 (void) sm_io_close(InChannel, SM_TIME_DEFAULT);
3311 InChannel = smioin;
3312 }
3313 if (sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL,
3314 SM_IO_RDONLY, NULL, smioin) == NULL)
3315 sm_syslog(LOG_ERR, e->e_id,
3316 "disconnect: sm_io_reopen(\"%s\") failed: %s",
3317 SM_PATH_DEVNULL, sm_errstring(errno));
3318
3319 /*
3320 ** output to the transcript
3321 ** We also compare the fd numbers here since OutChannel
3322 ** might be a layer on top of smioout due to encryption
3323 ** (see sfsasl.c).
3324 */
3325
3326 if (OutChannel != smioout &&
3327 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL) !=
3328 sm_io_getinfo(smioout, SM_IO_WHAT_FD, NULL))
3329 {
3330 (void) sm_io_close(OutChannel, SM_TIME_DEFAULT);
3331 OutChannel = smioout;
3332
3333 #if 0
3334 /*
3335 ** Has smioout been closed? Reopen it.
3336 ** This shouldn't happen anymore, the code is here
3337 ** just as a reminder.
3338 */
3339
3340 if (smioout->sm_magic == NULL &&
3341 sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL,
3342 SM_IO_WRONLY, NULL, smioout) == NULL)
3343 sm_syslog(LOG_ERR, e->e_id,
3344 "disconnect: sm_io_reopen(\"%s\") failed: %s",
3345 SM_PATH_DEVNULL, sm_errstring(errno));
3346 #endif /* 0 */
3347 }
3348 if (droplev > 0)
3349 {
3350 fd = open(SM_PATH_DEVNULL, O_WRONLY, 0666);
3351 if (fd == -1)
3352 {
3353 sm_syslog(LOG_ERR, e->e_id,
3354 "disconnect: open(\"%s\") failed: %s",
3355 SM_PATH_DEVNULL, sm_errstring(errno));
3356 }
3357 (void) sm_io_flush(smioout, SM_TIME_DEFAULT);
3358 if (fd >= 0)
3359 {
3360 (void) dup2(fd, STDOUT_FILENO);
3361 (void) dup2(fd, STDERR_FILENO);
3362 (void) close(fd);
3363 }
3364 }
3365
3366 /* drop our controlling TTY completely if possible */
3367 if (droplev > 1)
3368 {
3369 (void) setsid();
3370 errno = 0;
3371 }
3372
3373 #if XDEBUG
3374 checkfd012("disconnect");
3375 #endif /* XDEBUG */
3376
3377 if (LogLevel > 71)
3378 sm_syslog(LOG_DEBUG, e->e_id, "in background, pid=%d",
3379 (int) CurrentPid);
3380
3381 errno = 0;
3382 }
3383
3384 static void
3385 obsolete(argv)
3386 char *argv[];
3387 {
3388 register char *ap;
3389 register char *op;
3390
3391 while ((ap = *++argv) != NULL)
3392 {
3393 /* Return if "--" or not an option of any form. */
3394 if (ap[0] != '-' || ap[1] == '-')
3395 return;
3396
3397 /* Don't allow users to use "-Q." or "-Q ." */
3398 if ((ap[1] == 'Q' && ap[2] == '.') ||
3399 (ap[1] == 'Q' && argv[1] != NULL &&
3400 argv[1][0] == '.' && argv[1][1] == '\0'))
3401 {
3402 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
3403 "Can not use -Q.\n");
3404 exit(EX_USAGE);
3405 }
3406
3407 /* skip over options that do have a value */
3408 op = strchr(OPTIONS, ap[1]);
3409 if (op != NULL && *++op == ':' && ap[2] == '\0' &&
3410 ap[1] != 'd' &&
3411 #if defined(sony_news)
3412 ap[1] != 'E' && ap[1] != 'J' &&
3413 #endif /* defined(sony_news) */
3414 argv[1] != NULL && argv[1][0] != '-')
3415 {
3416 argv++;
3417 continue;
3418 }
3419
3420 /* If -C doesn't have an argument, use sendmail.cf. */
3421 #define __DEFPATH "sendmail.cf"
3422 if (ap[1] == 'C' && ap[2] == '\0')
3423 {
3424 *argv = xalloc(sizeof(__DEFPATH) + 2);
3425 (void) sm_strlcpyn(argv[0], sizeof(__DEFPATH) + 2, 2,
3426 "-C", __DEFPATH);
3427 }
3428
3429 /* If -q doesn't have an argument, run it once. */
3430 if (ap[1] == 'q' && ap[2] == '\0')
3431 *argv = "-q0";
3432
3433 /* If -Q doesn't have an argument, disable quarantining */
3434 if (ap[1] == 'Q' && ap[2] == '\0')
3435 *argv = "-Q.";
3436
3437 /* if -d doesn't have an argument, use 0-99.1 */
3438 if (ap[1] == 'd' && ap[2] == '\0')
3439 *argv = "-d0-99.1";
3440
3441 #if defined(sony_news)
3442 /* if -E doesn't have an argument, use -EC */
3443 if (ap[1] == 'E' && ap[2] == '\0')
3444 *argv = "-EC";
3445
3446 /* if -J doesn't have an argument, use -JJ */
3447 if (ap[1] == 'J' && ap[2] == '\0')
3448 *argv = "-JJ";
3449 #endif /* defined(sony_news) */
3450 }
3451 }
3452 /*
3453 ** AUTH_WARNING -- specify authorization warning
3454 **
3455 ** Parameters:
3456 ** e -- the current envelope.
3457 ** msg -- the text of the message.
3458 ** args -- arguments to the message.
3459 **
3460 ** Returns:
3461 ** none.
3462 */
3463
3464 void
3465 #ifdef __STDC__
3466 auth_warning(register ENVELOPE *e, const char *msg, ...)
3467 #else /* __STDC__ */
3468 auth_warning(e, msg, va_alist)
3469 register ENVELOPE *e;
3470 const char *msg;
3471 va_dcl
3472 #endif /* __STDC__ */
3473 {
3474 char buf[MAXLINE];
3475 SM_VA_LOCAL_DECL
3476
3477 if (bitset(PRIV_AUTHWARNINGS, PrivacyFlags))
3478 {
3479 register char *p;
3480 static char hostbuf[48];
3481
3482 if (hostbuf[0] == '\0')
3483 {
3484 struct hostent *hp;
3485
3486 hp = myhostname(hostbuf, sizeof(hostbuf));
3487 #if NETINET6
3488 if (hp != NULL)
3489 {
3490 freehostent(hp);
3491 hp = NULL;
3492 }
3493 #endif /* NETINET6 */
3494 }
3495
3496 (void) sm_strlcpyn(buf, sizeof(buf), 2, hostbuf, ": ");
3497 p = &buf[strlen(buf)];
3498 SM_VA_START(ap, msg);
3499 (void) sm_vsnprintf(p, SPACELEFT(buf, p), msg, ap);
3500 SM_VA_END(ap);
3501 addheader("X-Authentication-Warning", buf, 0, e, true);
3502 if (LogLevel > 3)
3503 sm_syslog(LOG_INFO, e->e_id,
3504 "Authentication-Warning: %.400s",
3505 buf);
3506 }
3507 }
3508 /*
3509 ** GETEXTENV -- get from external environment
3510 **
3511 ** Parameters:
3512 ** envar -- the name of the variable to retrieve
3513 **
3514 ** Returns:
3515 ** The value, if any.
3516 */
3517
3518 static char *
3519 getextenv(envar)
3520 const char *envar;
3521 {
3522 char **envp;
3523 int l;
3524
3525 l = strlen(envar);
3526 for (envp = ExternalEnviron; envp != NULL && *envp != NULL; envp++)
3527 {
3528 if (strncmp(*envp, envar, l) == 0 && (*envp)[l] == '=')
3529 return &(*envp)[l + 1];
3530 }
3531 return NULL;
3532 }
3533 /*
3534 ** SM_SETUSERENV -- set an environment variable in the propagated environment
3535 **
3536 ** Parameters:
3537 ** envar -- the name of the environment variable.
3538 ** value -- the value to which it should be set. If
3539 ** null, this is extracted from the incoming
3540 ** environment. If that is not set, the call
3541 ** to sm_setuserenv is ignored.
3542 **
3543 ** Returns:
3544 ** none.
3545 */
3546
3547 void
3548 sm_setuserenv(envar, value)
3549 const char *envar;
3550 const char *value;
3551 {
3552 int i, l;
3553 char **evp = UserEnviron;
3554 char *p;
3555
3556 if (value == NULL)
3557 {
3558 value = getextenv(envar);
3559 if (value == NULL)
3560 return;
3561 }
3562
3563 /* XXX enforce reasonable size? */
3564 i = strlen(envar) + 1;
3565 l = strlen(value) + i + 1;
3566 p = (char *) xalloc(l);
3567 (void) sm_strlcpyn(p, l, 3, envar, "=", value);
3568
3569 while (*evp != NULL && strncmp(*evp, p, i) != 0)
3570 evp++;
3571 if (*evp != NULL)
3572 {
3573 *evp++ = p;
3574 }
3575 else if (evp < &UserEnviron[MAXUSERENVIRON])
3576 {
3577 *evp++ = p;
3578 *evp = NULL;
3579 }
3580
3581 /* make sure it is in our environment as well */
3582 if (putenv(p) < 0)
3583 syserr("sm_setuserenv: putenv(%s) failed", p);
3584 }
3585 /*
3586 ** DUMPSTATE -- dump state
3587 **
3588 ** For debugging.
3589 */
3590
3591 void
3592 dumpstate(when)
3593 char *when;
3594 {
3595 register char *j = macvalue('j', CurEnv);
3596 int rs;
3597 extern int NextMacroId;
3598
3599 sm_syslog(LOG_DEBUG, CurEnv->e_id,
3600 "--- dumping state on %s: $j = %s ---",
3601 when,
3602 j == NULL ? "<NULL>" : j);
3603 if (j != NULL)
3604 {
3605 if (!wordinclass(j, 'w'))
3606 sm_syslog(LOG_DEBUG, CurEnv->e_id,
3607 "*** $j not in $=w ***");
3608 }
3609 sm_syslog(LOG_DEBUG, CurEnv->e_id, "CurChildren = %d", CurChildren);
3610 sm_syslog(LOG_DEBUG, CurEnv->e_id, "NextMacroId = %d (Max %d)",
3611 NextMacroId, MAXMACROID);
3612 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- open file descriptors: ---");
3613 printopenfds(true);
3614 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- connection cache: ---");
3615 mci_dump_all(smioout, true);
3616 rs = strtorwset("debug_dumpstate", NULL, ST_FIND);
3617 if (rs > 0)
3618 {
3619 int status;
3620 register char **pvp;
3621 char *pv[MAXATOM + 1];
3622
3623 pv[0] = NULL;
3624 status = REWRITE(pv, rs, CurEnv);
3625 sm_syslog(LOG_DEBUG, CurEnv->e_id,
3626 "--- ruleset debug_dumpstate returns stat %d, pv: ---",
3627 status);
3628 for (pvp = pv; *pvp != NULL; pvp++)
3629 sm_syslog(LOG_DEBUG, CurEnv->e_id, "%s", *pvp);
3630 }
3631 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- end of state dump ---");
3632 }
3633
3634 #ifdef SIGUSR1
3635 /*
3636 ** SIGUSR1 -- Signal a request to dump state.
3637 **
3638 ** Parameters:
3639 ** sig -- calling signal.
3640 **
3641 ** Returns:
3642 ** none.
3643 **
3644 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD
3645 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
3646 ** DOING.
3647 **
3648 ** XXX: More work is needed for this signal handler.
3649 */
3650
3651 /* ARGSUSED */
3652 static SIGFUNC_DECL
3653 sigusr1(sig)
3654 int sig;
3655 {
3656 int save_errno = errno;
3657
3658 FIX_SYSV_SIGNAL(sig, sigusr1);
3659 errno = save_errno;
3660 CHECK_CRITICAL(sig);
3661 dumpstate("user signal");
3662 # if SM_HEAP_CHECK
3663 dumpstab();
3664 # endif /* SM_HEAP_CHECK */
3665 errno = save_errno;
3666 return SIGFUNC_RETURN;
3667 }
3668 #endif /* SIGUSR1 */
3669
3670 /*
3671 ** DROP_PRIVILEGES -- reduce privileges to those of the RunAsUser option
3672 **
3673 ** Parameters:
3674 ** to_real_uid -- if set, drop to the real uid instead
3675 ** of the RunAsUser.
3676 **
3677 ** Returns:
3678 ** EX_OSERR if the setuid failed.
3679 ** EX_OK otherwise.
3680 */
3681
3682 int
3683 drop_privileges(to_real_uid)
3684 bool to_real_uid;
3685 {
3686 int rval = EX_OK;
3687 GIDSET_T emptygidset[1];
3688
3689 if (tTd(47, 1))
3690 sm_dprintf("drop_privileges(%d): Real[UG]id=%d:%d, get[ug]id=%d:%d, gete[ug]id=%d:%d, RunAs[UG]id=%d:%d\n",
3691 (int) to_real_uid,
3692 (int) RealUid, (int) RealGid,
3693 (int) getuid(), (int) getgid(),
3694 (int) geteuid(), (int) getegid(),
3695 (int) RunAsUid, (int) RunAsGid);
3696
3697 if (to_real_uid)
3698 {
3699 RunAsUserName = RealUserName;
3700 RunAsUid = RealUid;
3701 RunAsGid = RealGid;
3702 EffGid = RunAsGid;
3703 }
3704
3705 /* make sure no one can grab open descriptors for secret files */
3706 endpwent();
3707 sm_mbdb_terminate();
3708
3709 /* reset group permissions; these can be set later */
3710 emptygidset[0] = (to_real_uid || RunAsGid != 0) ? RunAsGid : getegid();
3711
3712 /*
3713 ** Notice: on some OS (Linux...) the setgroups() call causes
3714 ** a logfile entry if sendmail is not run by root.
3715 ** However, it is unclear (no POSIX standard) whether
3716 ** setgroups() can only succeed if executed by root.
3717 ** So for now we keep it as it is; if you want to change it, use
3718 ** if (geteuid() == 0 && setgroups(1, emptygidset) == -1)
3719 */
3720
3721 if (setgroups(1, emptygidset) == -1 && geteuid() == 0)
3722 {
3723 syserr("drop_privileges: setgroups(1, %d) failed",
3724 (int) emptygidset[0]);
3725 rval = EX_OSERR;
3726 }
3727
3728 /* reset primary group id */
3729 if (to_real_uid)
3730 {
3731 /*
3732 ** Drop gid to real gid.
3733 ** On some OS we must reset the effective[/real[/saved]] gid,
3734 ** and then use setgid() to finally drop all group privileges.
3735 ** Later on we check whether we can get back the
3736 ** effective gid.
3737 */
3738
3739 #if HASSETEGID
3740 if (setegid(RunAsGid) < 0)
3741 {
3742 syserr("drop_privileges: setegid(%d) failed",
3743 (int) RunAsGid);
3744 rval = EX_OSERR;
3745 }
3746 #else /* HASSETEGID */
3747 # if HASSETREGID
3748 if (setregid(RunAsGid, RunAsGid) < 0)
3749 {
3750 syserr("drop_privileges: setregid(%d, %d) failed",
3751 (int) RunAsGid, (int) RunAsGid);
3752 rval = EX_OSERR;
3753 }
3754 # else /* HASSETREGID */
3755 # if HASSETRESGID
3756 if (setresgid(RunAsGid, RunAsGid, RunAsGid) < 0)
3757 {
3758 syserr("drop_privileges: setresgid(%d, %d, %d) failed",
3759 (int) RunAsGid, (int) RunAsGid, (int) RunAsGid);
3760 rval = EX_OSERR;
3761 }
3762 # endif /* HASSETRESGID */
3763 # endif /* HASSETREGID */
3764 #endif /* HASSETEGID */
3765 }
3766 if (rval == EX_OK && (to_real_uid || RunAsGid != 0))
3767 {
3768 if (setgid(RunAsGid) < 0 && (!UseMSP || getegid() != RunAsGid))
3769 {
3770 syserr("drop_privileges: setgid(%d) failed",
3771 (int) RunAsGid);
3772 rval = EX_OSERR;
3773 }
3774 errno = 0;
3775 if (rval == EX_OK && getegid() != RunAsGid)
3776 {
3777 syserr("drop_privileges: Unable to set effective gid=%d to RunAsGid=%d",
3778 (int) getegid(), (int) RunAsGid);
3779 rval = EX_OSERR;
3780 }
3781 }
3782
3783 /* fiddle with uid */
3784 if (to_real_uid || RunAsUid != 0)
3785 {
3786 uid_t euid;
3787
3788 /*
3789 ** Try to setuid(RunAsUid).
3790 ** euid must be RunAsUid,
3791 ** ruid must be RunAsUid unless (e|r)uid wasn't 0
3792 ** and we didn't have to drop privileges to the real uid.
3793 */
3794
3795 if (setuid(RunAsUid) < 0 ||
3796 geteuid() != RunAsUid ||
3797 (getuid() != RunAsUid &&
3798 (to_real_uid || geteuid() == 0 || getuid() == 0)))
3799 {
3800 #if HASSETREUID
3801 /*
3802 ** if ruid != RunAsUid, euid == RunAsUid, then
3803 ** try resetting just the real uid, then using
3804 ** setuid() to drop the saved-uid as well.
3805 */
3806
3807 if (geteuid() == RunAsUid)
3808 {
3809 if (setreuid(RunAsUid, -1) < 0)
3810 {
3811 syserr("drop_privileges: setreuid(%d, -1) failed",
3812 (int) RunAsUid);
3813 rval = EX_OSERR;
3814 }
3815 if (setuid(RunAsUid) < 0)
3816 {
3817 syserr("drop_privileges: second setuid(%d) attempt failed",
3818 (int) RunAsUid);
3819 rval = EX_OSERR;
3820 }
3821 }
3822 else
3823 #endif /* HASSETREUID */
3824 {
3825 syserr("drop_privileges: setuid(%d) failed",
3826 (int) RunAsUid);
3827 rval = EX_OSERR;
3828 }
3829 }
3830 euid = geteuid();
3831 if (RunAsUid != 0 && setuid(0) == 0)
3832 {
3833 /*
3834 ** Believe it or not, the Linux capability model
3835 ** allows a non-root process to override setuid()
3836 ** on a process running as root and prevent that
3837 ** process from dropping privileges.
3838 */
3839
3840 syserr("drop_privileges: setuid(0) succeeded (when it should not)");
3841 rval = EX_OSERR;
3842 }
3843 else if (RunAsUid != euid && setuid(euid) == 0)
3844 {
3845 /*
3846 ** Some operating systems will keep the saved-uid
3847 ** if a non-root effective-uid calls setuid(real-uid)
3848 ** making it possible to set it back again later.
3849 */
3850
3851 syserr("drop_privileges: Unable to drop non-root set-user-ID privileges");
3852 rval = EX_OSERR;
3853 }
3854 }
3855
3856 if ((to_real_uid || RunAsGid != 0) &&
3857 rval == EX_OK && RunAsGid != EffGid &&
3858 getuid() != 0 && geteuid() != 0)
3859 {
3860 errno = 0;
3861 if (setgid(EffGid) == 0)
3862 {
3863 syserr("drop_privileges: setgid(%d) succeeded (when it should not)",
3864 (int) EffGid);
3865 rval = EX_OSERR;
3866 }
3867 }
3868
3869 if (tTd(47, 5))
3870 {
3871 sm_dprintf("drop_privileges: e/ruid = %d/%d e/rgid = %d/%d\n",
3872 (int) geteuid(), (int) getuid(),
3873 (int) getegid(), (int) getgid());
3874 sm_dprintf("drop_privileges: RunAsUser = %d:%d\n",
3875 (int) RunAsUid, (int) RunAsGid);
3876 if (tTd(47, 10))
3877 sm_dprintf("drop_privileges: rval = %d\n", rval);
3878 }
3879 return rval;
3880 }
3881 /*
3882 ** FILL_FD -- make sure a file descriptor has been properly allocated
3883 **
3884 ** Used to make sure that stdin/out/err are allocated on startup
3885 **
3886 ** Parameters:
3887 ** fd -- the file descriptor to be filled.
3888 ** where -- a string used for logging. If NULL, this is
3889 ** being called on startup, and logging should
3890 ** not be done.
3891 **
3892 ** Returns:
3893 ** none
3894 **
3895 ** Side Effects:
3896 ** possibly changes MissingFds
3897 */
3898
3899 void
3900 fill_fd(fd, where)
3901 int fd;
3902 char *where;
3903 {
3904 int i;
3905 struct stat stbuf;
3906
3907 if (fstat(fd, &stbuf) >= 0 || errno != EBADF)
3908 return;
3909
3910 if (where != NULL)
3911 syserr("fill_fd: %s: fd %d not open", where, fd);
3912 else
3913 MissingFds |= 1 << fd;
3914 i = open(SM_PATH_DEVNULL, fd == 0 ? O_RDONLY : O_WRONLY, 0666);
3915 if (i < 0)
3916 {
3917 syserr("!fill_fd: %s: cannot open %s",
3918 where == NULL ? "startup" : where, SM_PATH_DEVNULL);
3919 }
3920 if (fd != i)
3921 {
3922 (void) dup2(i, fd);
3923 (void) close(i);
3924 }
3925 }
3926 /*
3927 ** SM_PRINTOPTIONS -- print options
3928 **
3929 ** Parameters:
3930 ** options -- array of options.
3931 **
3932 ** Returns:
3933 ** none.
3934 */
3935
3936 static void
3937 sm_printoptions(options)
3938 char **options;
3939 {
3940 int ll;
3941 char **av;
3942
3943 av = options;
3944 ll = 7;
3945 while (*av != NULL)
3946 {
3947 if (ll + strlen(*av) > 63)
3948 {
3949 sm_dprintf("\n");
3950 ll = 0;
3951 }
3952 if (ll == 0)
3953 sm_dprintf("\t\t");
3954 else
3955 sm_dprintf(" ");
3956 sm_dprintf("%s", *av);
3957 ll += strlen(*av++) + 1;
3958 }
3959 sm_dprintf("\n");
3960 }
3961
3962 /*
3963 ** TO8BIT -- convert \octal sequences in a test mode input line
3964 **
3965 ** Parameters:
3966 ** str -- the input line.
3967 **
3968 ** Returns:
3969 ** none.
3970 **
3971 ** Side Effects:
3972 ** replaces \0octal in str with octal value.
3973 */
3974
3975 static bool to8bit __P((char *));
3976
3977 static bool
3978 to8bit(str)
3979 char *str;
3980 {
3981 int c, len;
3982 char *out, *in;
3983 bool changed;
3984
3985 if (str == NULL)
3986 return false;
3987 in = out = str;
3988 changed = false;
3989 len = 0;
3990 while ((c = (*str++ & 0377)) != '\0')
3991 {
3992 int oct, nxtc;
3993
3994 ++len;
3995 if (c == '\\' &&
3996 (nxtc = (*str & 0377)) == '0')
3997 {
3998 oct = 0;
3999 while ((nxtc = (*str & 0377)) != '\0' &&
4000 isascii(nxtc) && isdigit(nxtc))
4001 {
4002 oct <<= 3;
4003 oct += nxtc - '0';
4004 ++str;
4005 ++len;
4006 }
4007 changed = true;
4008 c = oct;
4009 }
4010 *out++ = c;
4011 }
4012 *out++ = c;
4013 if (changed)
4014 {
4015 char *q;
4016
4017 q = quote_internal_chars(in, in, &len);
4018 if (q != in)
4019 sm_strlcpy(in, q, len);
4020 }
4021 return changed;
4022 }
4023
4024 /*
4025 ** TESTMODELINE -- process a test mode input line
4026 **
4027 ** Parameters:
4028 ** line -- the input line.
4029 ** e -- the current environment.
4030 ** Syntax:
4031 ** # a comment
4032 ** .X process X as a configuration line
4033 ** =X dump a configuration item (such as mailers)
4034 ** $X dump a macro or class
4035 ** /X try an activity
4036 ** X normal process through rule set X
4037 */
4038
4039 static void
4040 testmodeline(line, e)
4041 char *line;
4042 ENVELOPE *e;
4043 {
4044 register char *p;
4045 char *q;
4046 auto char *delimptr;
4047 int mid;
4048 int i, rs;
4049 STAB *map;
4050 char **s;
4051 struct rewrite *rw;
4052 ADDRESS a;
4053 char *lbp;
4054 auto int lbs;
4055 static int tryflags = RF_COPYNONE;
4056 char exbuf[MAXLINE];
4057 char lbuf[MAXLINE];
4058 extern unsigned char TokTypeNoC[];
4059 bool eightbit;
4060
4061 /* skip leading spaces */
4062 while (*line == ' ')
4063 line++;
4064
4065 lbp = NULL;
4066 eightbit = false;
4067 switch (line[0])
4068 {
4069 case '#':
4070 case '\0':
4071 return;
4072
4073 case '?':
4074 help("-bt", e);
4075 return;
4076
4077 case '.': /* config-style settings */
4078 switch (line[1])
4079 {
4080 case 'D':
4081 mid = macid_parse(&line[2], &delimptr);
4082 if (mid == 0)
4083 return;
4084 lbs = sizeof(lbuf);
4085 lbp = translate_dollars(delimptr, lbuf, &lbs);
4086 macdefine(&e->e_macro, A_TEMP, mid, lbp);
4087 if (lbp != lbuf)
4088 SM_FREE(lbp);
4089 break;
4090
4091 case 'C':
4092 if (line[2] == '\0') /* not to call syserr() */
4093 return;
4094
4095 mid = macid_parse(&line[2], &delimptr);
4096 if (mid == 0)
4097 return;
4098 lbs = sizeof(lbuf);
4099 lbp = translate_dollars(delimptr, lbuf, &lbs);
4100 expand(lbp, exbuf, sizeof(exbuf), e);
4101 if (lbp != lbuf)
4102 SM_FREE(lbp);
4103 p = exbuf;
4104 while (*p != '\0')
4105 {
4106 register char *wd;
4107 char delim;
4108
4109 while (*p != '\0' && isascii(*p) && isspace(*p))
4110 p++;
4111 wd = p;
4112 while (*p != '\0' && !(isascii(*p) && isspace(*p)))
4113 p++;
4114 delim = *p;
4115 *p = '\0';
4116 if (wd[0] != '\0')
4117 setclass(mid, wd);
4118 *p = delim;
4119 }
4120 break;
4121
4122 case '\0':
4123 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4124 "Usage: .[DC]macro value(s)\n");
4125 break;
4126
4127 default:
4128 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4129 "Unknown \".\" command %s\n", line);
4130 break;
4131 }
4132 return;
4133
4134 case '=': /* config-style settings */
4135 switch (line[1])
4136 {
4137 case 'S': /* dump rule set */
4138 rs = strtorwset(&line[2], NULL, ST_FIND);
4139 if (rs < 0)
4140 {
4141 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4142 "Undefined ruleset %s\n", &line[2]);
4143 return;
4144 }
4145 rw = RewriteRules[rs];
4146 if (rw == NULL)
4147 return;
4148 do
4149 {
4150 (void) sm_io_putc(smioout, SM_TIME_DEFAULT,
4151 'R');
4152 s = rw->r_lhs;
4153 while (*s != NULL)
4154 {
4155 xputs(smioout, *s++);
4156 (void) sm_io_putc(smioout,
4157 SM_TIME_DEFAULT, ' ');
4158 }
4159 (void) sm_io_putc(smioout, SM_TIME_DEFAULT,
4160 '\t');
4161 (void) sm_io_putc(smioout, SM_TIME_DEFAULT,
4162 '\t');
4163 s = rw->r_rhs;
4164 while (*s != NULL)
4165 {
4166 xputs(smioout, *s++);
4167 (void) sm_io_putc(smioout,
4168 SM_TIME_DEFAULT, ' ');
4169 }
4170 (void) sm_io_putc(smioout, SM_TIME_DEFAULT,
4171 '\n');
4172 } while ((rw = rw->r_next) != NULL);
4173 break;
4174
4175 case 'M':
4176 for (i = 0; i < MAXMAILERS; i++)
4177 {
4178 if (Mailer[i] != NULL)
4179 printmailer(smioout, Mailer[i]);
4180 }
4181 break;
4182
4183 case '\0':
4184 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4185 "Usage: =Sruleset or =M\n");
4186 break;
4187
4188 default:
4189 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4190 "Unknown \"=\" command %s\n", line);
4191 break;
4192 }
4193 return;
4194
4195 case '-': /* set command-line-like opts */
4196 switch (line[1])
4197 {
4198 case 'd':
4199 tTflag(&line[2]);
4200 break;
4201
4202 case '\0':
4203 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4204 "Usage: -d{debug arguments}\n");
4205 break;
4206
4207 default:
4208 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4209 "Unknown \"-\" command %s\n", line);
4210 break;
4211 }
4212 return;
4213
4214 case '$':
4215 if (line[1] == '=')
4216 {
4217 mid = macid(&line[2]);
4218 if (mid != 0)
4219 stabapply(dump_class, mid);
4220 return;
4221 }
4222 mid = macid(&line[1]);
4223 if (mid == 0)
4224 return;
4225 p = macvalue(mid, e);
4226 if (p == NULL)
4227 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4228 "Undefined\n");
4229 else
4230 {
4231 xputs(smioout, p);
4232 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4233 "\n");
4234 }
4235 return;
4236
4237 case '/': /* miscellaneous commands */
4238 p = &line[strlen(line)];
4239 while (--p >= line && isascii(*p) && isspace(*p))
4240 *p = '\0';
4241 p = strpbrk(line, " \t");
4242 if (p != NULL)
4243 {
4244 while (isascii(*p) && isspace(*p))
4245 *p++ = '\0';
4246 }
4247 else
4248 p = "";
4249 if (line[1] == '\0')
4250 {
4251 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4252 "Usage: /[canon|map|mx|parse|try|tryflags]\n");
4253 return;
4254 }
4255 if (sm_strcasecmp(&line[1], "quit") == 0)
4256 {
4257 CurEnv->e_id = NULL;
4258 finis(true, true, ExitStat);
4259 /* NOTREACHED */
4260 }
4261 if (sm_strcasecmp(&line[1], "mx") == 0)
4262 {
4263 #if NAMED_BIND
4264 /* look up MX records */
4265 int nmx;
4266 auto int rcode;
4267 char *mxhosts[MAXMXHOSTS + 1];
4268
4269 if (*p == '\0')
4270 {
4271 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4272 "Usage: /mx address\n");
4273 return;
4274 }
4275 nmx = getmxrr(p, mxhosts, NULL, false, &rcode, true,
4276 NULL);
4277 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4278 "getmxrr(%s) returns %d value(s):\n",
4279 p, nmx);
4280 for (i = 0; i < nmx; i++)
4281 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4282 "\t%s\n", mxhosts[i]);
4283 #else /* NAMED_BIND */
4284 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4285 "No MX code compiled in\n");
4286 #endif /* NAMED_BIND */
4287 }
4288 else if (sm_strcasecmp(&line[1], "canon") == 0)
4289 {
4290 char host[MAXHOSTNAMELEN];
4291
4292 if (*p == '\0')
4293 {
4294 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4295 "Usage: /canon address\n");
4296 return;
4297 }
4298 else if (sm_strlcpy(host, p, sizeof(host)) >= sizeof(host))
4299 {
4300 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4301 "Name too long\n");
4302 return;
4303 }
4304 (void) getcanonname(host, sizeof(host), !HasWildcardMX,
4305 NULL);
4306 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4307 "getcanonname(%s) returns %s\n",
4308 p, host);
4309 }
4310 else if (sm_strcasecmp(&line[1], "map") == 0)
4311 {
4312 auto int rcode = EX_OK;
4313 char *av[2];
4314
4315 if (*p == '\0')
4316 {
4317 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4318 "Usage: /map mapname key\n");
4319 return;
4320 }
4321 for (q = p; *q != '\0' && !(isascii(*q) && isspace(*q)); q++)
4322 continue;
4323 if (*q == '\0')
4324 {
4325 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4326 "No key specified\n");
4327 return;
4328 }
4329 *q++ = '\0';
4330 map = stab(p, ST_MAP, ST_FIND);
4331 if (map == NULL)
4332 {
4333 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4334 "Map named \"%s\" not found\n", p);
4335 return;
4336 }
4337 if (!bitset(MF_OPEN, map->s_map.map_mflags) &&
4338 !openmap(&(map->s_map)))
4339 {
4340 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4341 "Map named \"%s\" not open\n", p);
4342 return;
4343 }
4344 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4345 "map_lookup: %s (%s) ", p, q);
4346 av[0] = q;
4347 av[1] = NULL;
4348 p = (*map->s_map.map_class->map_lookup)
4349 (&map->s_map, q, av, &rcode);
4350 if (p == NULL)
4351 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4352 "no match (%d)\n",
4353 rcode);
4354 else
4355 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4356 "returns %s (%d)\n", p,
4357 rcode);
4358 }
4359 else if (sm_strcasecmp(&line[1], "try") == 0)
4360 {
4361 MAILER *m;
4362 STAB *st;
4363 auto int rcode = EX_OK;
4364
4365 q = strpbrk(p, " \t");
4366 if (q != NULL)
4367 {
4368 while (isascii(*q) && isspace(*q))
4369 *q++ = '\0';
4370 }
4371 if (q == NULL || *q == '\0')
4372 {
4373 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4374 "Usage: /try mailer address\n");
4375 return;
4376 }
4377 st = stab(p, ST_MAILER, ST_FIND);
4378 if (st == NULL)
4379 {
4380 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4381 "Unknown mailer %s\n", p);
4382 return;
4383 }
4384 m = st->s_mailer;
4385 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4386 "Trying %s %s address %s for mailer %s\n",
4387 bitset(RF_HEADERADDR, tryflags) ? "header"
4388 : "envelope",
4389 bitset(RF_SENDERADDR, tryflags) ? "sender"
4390 : "recipient", q, p);
4391 p = remotename(q, m, tryflags, &rcode, CurEnv);
4392 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4393 "Rcode = %d, addr = %s\n",
4394 rcode, p == NULL ? "<NULL>" : p);
4395 e->e_to = NULL;
4396 }
4397 else if (sm_strcasecmp(&line[1], "tryflags") == 0)
4398 {
4399 if (*p == '\0')
4400 {
4401 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4402 "Usage: /tryflags [Hh|Ee][Ss|Rr]\n");
4403 return;
4404 }
4405 for (; *p != '\0'; p++)
4406 {
4407 switch (*p)
4408 {
4409 case 'H':
4410 case 'h':
4411 tryflags |= RF_HEADERADDR;
4412 break;
4413
4414 case 'E':
4415 case 'e':
4416 tryflags &= ~RF_HEADERADDR;
4417 break;
4418
4419 case 'S':
4420 case 's':
4421 tryflags |= RF_SENDERADDR;
4422 break;
4423
4424 case 'R':
4425 case 'r':
4426 tryflags &= ~RF_SENDERADDR;
4427 break;
4428 }
4429 }
4430 exbuf[0] = bitset(RF_HEADERADDR, tryflags) ? 'h' : 'e';
4431 exbuf[1] = ' ';
4432 exbuf[2] = bitset(RF_SENDERADDR, tryflags) ? 's' : 'r';
4433 exbuf[3] = '\0';
4434 macdefine(&e->e_macro, A_TEMP,
4435 macid("{addr_type}"), exbuf);
4436 }
4437 else if (sm_strcasecmp(&line[1], "parse") == 0)
4438 {
4439 if (*p == '\0')
4440 {
4441 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4442 "Usage: /parse address\n");
4443 return;
4444 }
4445 q = crackaddr(p, e);
4446 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4447 "Cracked address = ");
4448 xputs(smioout, q);
4449 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4450 "\nParsing %s %s address\n",
4451 bitset(RF_HEADERADDR, tryflags) ?
4452 "header" : "envelope",
4453 bitset(RF_SENDERADDR, tryflags) ?
4454 "sender" : "recipient");
4455 if (parseaddr(p, &a, tryflags, '\0', NULL, e, true)
4456 == NULL)
4457 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4458 "Cannot parse\n");
4459 else if (a.q_host != NULL && a.q_host[0] != '\0')
4460 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4461 "mailer %s, host %s, user %s\n",
4462 a.q_mailer->m_name,
4463 a.q_host,
4464 a.q_user);
4465 else
4466 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4467 "mailer %s, user %s\n",
4468 a.q_mailer->m_name,
4469 a.q_user);
4470 e->e_to = NULL;
4471 }
4472 else if (sm_strcasecmp(&line[1], "header") == 0)
4473 {
4474 unsigned long ul;
4475
4476 ul = chompheader(p, CHHDR_CHECK|CHHDR_USER, NULL, e);
4477 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4478 "ul = %lu\n", ul);
4479 }
4480 else
4481 {
4482 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4483 "Unknown \"/\" command %s\n",
4484 line);
4485 }
4486 (void) sm_io_flush(smioout, SM_TIME_DEFAULT);
4487 return;
4488 }
4489
4490 for (p = line; isascii(*p) && isspace(*p); p++)
4491 continue;
4492 q = p;
4493 while (*p != '\0' && !(isascii(*p) && isspace(*p)))
4494 p++;
4495 if (*p == '\0')
4496 {
4497 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4498 "No address!\n");
4499 return;
4500 }
4501 *p = '\0';
4502 if (tTd(23, 101))
4503 eightbit = to8bit(p + 1);
4504 if (invalidaddr(p + 1, NULL, true))
4505 return;
4506 do
4507 {
4508 register char **pvp;
4509 char pvpbuf[PSBUFSIZE];
4510
4511 pvp = prescan(++p, ',', pvpbuf, sizeof(pvpbuf), &delimptr,
4512 ConfigLevel >= 9 ? TokTypeNoC : ExtTokenTab, false);
4513 if (pvp == NULL)
4514 continue;
4515 p = q;
4516 while (*p != '\0')
4517 {
4518 int status;
4519
4520 rs = strtorwset(p, NULL, ST_FIND);
4521 if (rs < 0)
4522 {
4523 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4524 "Undefined ruleset %s\n",
4525 p);
4526 break;
4527 }
4528 status = REWRITE(pvp, rs, e);
4529 if (status != EX_OK)
4530 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4531 "== Ruleset %s (%d) status %d\n",
4532 p, rs, status);
4533 else if (eightbit)
4534 {
4535 cataddr(pvp, NULL, exbuf, sizeof(exbuf), '\0',
4536 true);
4537 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4538 "cataddr: %s\n",
4539 str2prt(exbuf));
4540 }
4541 while (*p != '\0' && *p++ != ',')
4542 continue;
4543 }
4544 } while (*(p = delimptr) != '\0');
4545 (void) sm_io_flush(smioout, SM_TIME_DEFAULT);
4546 }
4547
4548 static void
4549 dump_class(s, id)
4550 register STAB *s;
4551 int id;
4552 {
4553 if (s->s_symtype != ST_CLASS)
4554 return;
4555 if (bitnset(bitidx(id), s->s_class))
4556 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4557 "%s\n", s->s_name);
4558 }
4559
4560 /*
4561 ** An exception type used to create QuickAbort exceptions.
4562 ** This is my first cut at converting QuickAbort from longjmp to exceptions.
4563 ** These exceptions have a single integer argument, which is the argument
4564 ** to longjmp in the original code (either 1 or 2). I don't know the
4565 ** significance of 1 vs 2: the calls to setjmp don't care.
4566 */
4567
4568 const SM_EXC_TYPE_T EtypeQuickAbort =
4569 {
4570 SmExcTypeMagic,
4571 "E:mta.quickabort",
4572 "i",
4573 sm_etype_printf,
4574 "quick abort %0",
4575 };
DragonFly BSD