1 /* 2 * Copyright (c) 1998-2003 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/xtrap.h> 17 #include <sm/signal.h> 18 19 #ifndef lint 20 SM_UNUSED(static char copyright[]) = 21 "@(#) Copyright (c) 1998-2001 Sendmail, Inc. and its suppliers.\n\ 22 All rights reserved.\n\ 23 Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.\n\ 24 Copyright (c) 1988, 1993\n\ 25 The Regents of the University of California. All rights reserved.\n"; 26 #endif /* ! lint */ 27 28 SM_RCSID("@(#)$Id: main.c,v 8.887.2.27 2003/08/04 17:23:37 ca Exp $") 29 30 31 #if NETINET || NETINET6 32 # include <arpa/inet.h> 33 #endif /* NETINET || NETINET6 */ 34 35 /* for getcfname() */ 36 #include <sendmail/pathnames.h> 37 38 static SM_DEBUG_T 39 DebugNoPRestart = SM_DEBUG_INITIALIZER("no_persistent_restart", 40 "@(#)$Debug: no_persistent_restart - don't restart, log only $"); 41 42 static void dump_class __P((STAB *, int)); 43 static void obsolete __P((char **)); 44 static void testmodeline __P((char *, ENVELOPE *)); 45 static char *getextenv __P((const char *)); 46 static void sm_printoptions __P((char **)); 47 static SIGFUNC_DECL intindebug __P((int)); 48 static SIGFUNC_DECL sighup __P((int)); 49 static SIGFUNC_DECL sigpipe __P((int)); 50 static SIGFUNC_DECL sigterm __P((int)); 51 #ifdef SIGUSR1 52 static SIGFUNC_DECL sigusr1 __P((int)); 53 #endif /* SIGUSR1 */ 54 55 /* 56 ** SENDMAIL -- Post mail to a set of destinations. 57 ** 58 ** This is the basic mail router. All user mail programs should 59 ** call this routine to actually deliver mail. Sendmail in 60 ** turn calls a bunch of mail servers that do the real work of 61 ** delivering the mail. 62 ** 63 ** Sendmail is driven by settings read in from /etc/mail/sendmail.cf 64 ** (read by readcf.c). 65 ** 66 ** Usage: 67 ** /usr/lib/sendmail [flags] addr ... 68 ** 69 ** See the associated documentation for details. 70 ** 71 ** Authors: 72 ** Eric Allman, UCB/INGRES (until 10/81). 73 ** Britton-Lee, Inc., purveyors of fine 74 ** database computers (11/81 - 10/88). 75 ** International Computer Science Institute 76 ** (11/88 - 9/89). 77 ** UCB/Mammoth Project (10/89 - 7/95). 78 ** InReference, Inc. (8/95 - 1/97). 79 ** Sendmail, Inc. (1/98 - present). 80 ** The support of my employers is gratefully acknowledged. 81 ** Few of them (Britton-Lee in particular) have had 82 ** anything to gain from my involvement in this project. 83 ** 84 ** Gregory Neil Shapiro, 85 ** Worcester Polytechnic Institute (until 3/98). 86 ** Sendmail, Inc. (3/98 - present). 87 ** 88 ** Claus Assmann, 89 ** Sendmail, Inc. (12/98 - present). 90 */ 91 92 char *FullName; /* sender's full name */ 93 ENVELOPE BlankEnvelope; /* a "blank" envelope */ 94 static ENVELOPE MainEnvelope; /* the envelope around the basic letter */ 95 ADDRESS NullAddress = /* a null address */ 96 { "", "", NULL, "" }; 97 char *CommandLineArgs; /* command line args for pid file */ 98 bool Warn_Q_option = false; /* warn about Q option use */ 99 static int MissingFds = 0; /* bit map of fds missing on startup */ 100 char *Mbdb = "pw"; /* mailbox database defaults to /etc/passwd */ 101 102 #ifdef NGROUPS_MAX 103 GIDSET_T InitialGidSet[NGROUPS_MAX]; 104 #endif /* NGROUPS_MAX */ 105 106 #define MAXCONFIGLEVEL 10 /* highest config version level known */ 107 108 #if SASL 109 static sasl_callback_t srvcallbacks[] = 110 { 111 { SASL_CB_VERIFYFILE, &safesaslfile, NULL }, 112 { SASL_CB_PROXY_POLICY, &proxy_policy, NULL }, 113 { SASL_CB_LIST_END, NULL, NULL } 114 }; 115 #endif /* SASL */ 116 117 unsigned int SubmitMode; 118 int SyslogPrefixLen; /* estimated length of syslog prefix */ 119 #define PIDLEN 6 /* pid length for computing SyslogPrefixLen */ 120 #ifndef SL_FUDGE 121 # define SL_FUDGE 10 /* fudge offset for SyslogPrefixLen */ 122 #endif /* ! SL_FUDGE */ 123 #define SLDLL 8 /* est. length of default syslog label */ 124 125 126 /* Some options are dangerous to allow users to use in non-submit mode */ 127 #define CHECK_AGAINST_OPMODE(cmd) \ 128 { \ 129 if (extraprivs && \ 130 OpMode != MD_DELIVER && OpMode != MD_SMTP && \ 131 OpMode != MD_ARPAFTP && \ 132 OpMode != MD_VERIFY && OpMode != MD_TEST) \ 133 { \ 134 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \ 135 "WARNING: Ignoring submission mode -%c option (not in submission mode)\n", \ 136 (cmd)); \ 137 break; \ 138 } \ 139 if (extraprivs && queuerun) \ 140 { \ 141 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \ 142 "WARNING: Ignoring submission mode -%c option with -q\n", \ 143 (cmd)); \ 144 break; \ 145 } \ 146 } 147 148 int 149 main(argc, argv, envp) 150 int argc; 151 char **argv; 152 char **envp; 153 { 154 register char *p; 155 char **av; 156 extern char Version[]; 157 char *ep, *from; 158 STAB *st; 159 register int i; 160 int j; 161 int dp; 162 int fill_errno; 163 int qgrp = NOQGRP; /* queue group to process */ 164 bool safecf = true; 165 BITMAP256 *p_flags = NULL; /* daemon flags */ 166 bool warn_C_flag = false; 167 bool auth = true; /* whether to set e_auth_param */ 168 char warn_f_flag = '\0'; 169 bool run_in_foreground = false; /* -bD mode */ 170 bool queuerun = false, debug = false; 171 struct passwd *pw; 172 struct hostent *hp; 173 char *nullserver = NULL; 174 char *authinfo = NULL; 175 char *sysloglabel = NULL; /* label for syslog */ 176 char *conffile = NULL; /* name of .cf file */ 177 char *queuegroup = NULL; /* queue group to process */ 178 #if _FFR_QUARANTINE 179 char *quarantining = NULL; /* quarantine queue items? */ 180 #endif /* _FFR_QUARANTINE */ 181 bool extraprivs; 182 bool forged, negate; 183 bool queuepersistent = false; /* queue runner process runs forever */ 184 bool foregroundqueue = false; /* queue run in foreground */ 185 bool save_val; /* to save some bool var. */ 186 int cftype; /* which cf file to use? */ 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_rv_off = ""; 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 i = DtableSize; 272 while (--i > 0) 273 { 274 if (i != STDIN_FILENO && i != STDOUT_FILENO && 275 i != STDERR_FILENO) 276 (void) close(i); 277 } 278 errno = 0; 279 280 #if LOG 281 # ifndef SM_LOG_STR 282 # define SM_LOG_STR "sendmail" 283 # endif /* ! SM_LOG_STR */ 284 # ifdef LOG_MAIL 285 openlog(SM_LOG_STR, LOG_PID, LOG_MAIL); 286 # else /* LOG_MAIL */ 287 openlog(SM_LOG_STR, LOG_PID); 288 # endif /* LOG_MAIL */ 289 #endif /* LOG */ 290 291 /* 292 ** Seed the random number generator. 293 ** Used for queue file names, picking a queue directory, and 294 ** MX randomization. 295 */ 296 297 seed_random(); 298 299 /* do machine-dependent initializations */ 300 init_md(argc, argv); 301 302 303 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + SL_FUDGE + SLDLL; 304 305 /* reset status from syserr() calls for missing file descriptors */ 306 Errors = 0; 307 ExitStat = EX_OK; 308 309 SubmitMode = SUBMIT_UNKNOWN; 310 #if XDEBUG 311 checkfd012("after openlog"); 312 #endif /* XDEBUG */ 313 314 tTsetup(tTdvect, sizeof tTdvect, "0-99.1,*_trace_*.1"); 315 316 #ifdef NGROUPS_MAX 317 /* save initial group set for future checks */ 318 i = getgroups(NGROUPS_MAX, InitialGidSet); 319 if (i <= 0) 320 { 321 InitialGidSet[0] = (GID_T) -1; 322 i = 0; 323 } 324 while (i < NGROUPS_MAX) 325 InitialGidSet[i++] = InitialGidSet[0]; 326 #endif /* NGROUPS_MAX */ 327 328 /* drop group id privileges (RunAsUser not yet set) */ 329 dp = drop_privileges(false); 330 setstat(dp); 331 332 #ifdef SIGUSR1 333 /* Only allow root (or non-set-*-ID binaries) to use SIGUSR1 */ 334 if (!extraprivs) 335 { 336 /* arrange to dump state on user-1 signal */ 337 (void) sm_signal(SIGUSR1, sigusr1); 338 } 339 else 340 { 341 /* ignore user-1 signal */ 342 (void) sm_signal(SIGUSR1, SIG_IGN); 343 } 344 #endif /* SIGUSR1 */ 345 346 /* initialize for setproctitle */ 347 initsetproctitle(argc, argv, envp); 348 349 /* Handle any non-getoptable constructions. */ 350 obsolete(argv); 351 352 /* 353 ** Do a quick prescan of the argument list. 354 */ 355 356 357 /* find initial opMode */ 358 OpMode = MD_DELIVER; 359 av = argv; 360 p = strrchr(*av, '/'); 361 if (p++ == NULL) 362 p = *av; 363 if (strcmp(p, "newaliases") == 0) 364 OpMode = MD_INITALIAS; 365 else if (strcmp(p, "mailq") == 0) 366 OpMode = MD_PRINT; 367 else if (strcmp(p, "smtpd") == 0) 368 OpMode = MD_DAEMON; 369 else if (strcmp(p, "hoststat") == 0) 370 OpMode = MD_HOSTSTAT; 371 else if (strcmp(p, "purgestat") == 0) 372 OpMode = MD_PURGESTAT; 373 374 #if _FFR_QUARANTINE 375 # if defined(__osf__) || defined(_AIX3) 376 # define OPTIONS "A:B:b:C:cd:e:F:f:Gh:IiL:M:mN:nO:o:p:q:R:r:sTtV:vX:xQ:" 377 # endif /* defined(__osf__) || defined(_AIX3) */ 378 # if defined(sony_news) 379 # define OPTIONS "A:B:b:C:cd:E:e:F:f:Gh:IiJ:L:M:mN:nO:o:p:q:R:r:sTtV:vX:Q:" 380 # endif /* defined(sony_news) */ 381 # ifndef OPTIONS 382 # define OPTIONS "A:B:b:C:cd:e:F:f:Gh:IiL:M:mN:nO:o:p:q:R:r:sTtV:vX:Q:" 383 # endif /* ! OPTIONS */ 384 #else /* _FFR_QUARANTINE */ 385 # if defined(__osf__) || defined(_AIX3) 386 # define OPTIONS "A:B:b:C:cd:e:F:f:Gh:IiL:M:mN:nO:o:p:q:R:r:sTtV:vX:x" 387 # endif /* defined(__osf__) || defined(_AIX3) */ 388 # if defined(sony_news) 389 # define OPTIONS "A:B:b:C:cd:E:e:F:f:Gh:IiJ:L:M:mN:nO:o:p:q:R:r:sTtV:vX:" 390 # endif /* defined(sony_news) */ 391 # ifndef OPTIONS 392 # define OPTIONS "A:B:b:C:cd:e:F:f:Gh:IiL:M:mN:nO:o:p:q:R:r:sTtV:vX:" 393 # endif /* ! OPTIONS */ 394 #endif /* _FFR_QUARANTINE */ 395 396 /* Set to 0 to allow -b; need to check optarg before using it! */ 397 opterr = 0; 398 while ((j = getopt(argc, argv, OPTIONS)) != -1) 399 { 400 switch (j) 401 { 402 case 'b': /* operations mode */ 403 j = (optarg == NULL) ? ' ' : *optarg; 404 switch (j) 405 { 406 case MD_DAEMON: 407 case MD_FGDAEMON: 408 case MD_SMTP: 409 case MD_INITALIAS: 410 case MD_DELIVER: 411 case MD_VERIFY: 412 case MD_TEST: 413 case MD_PRINT: 414 case MD_PRINTNQE: 415 case MD_HOSTSTAT: 416 case MD_PURGESTAT: 417 case MD_ARPAFTP: 418 OpMode = j; 419 break; 420 421 case MD_FREEZE: 422 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 423 "Frozen configurations unsupported\n"); 424 return EX_USAGE; 425 426 default: 427 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 428 "Invalid operation mode %c\n", 429 j); 430 return EX_USAGE; 431 } 432 break; 433 434 case 'd': 435 debug = true; 436 tTflag(optarg); 437 (void) sm_io_setvbuf(smioout, SM_TIME_DEFAULT, 438 (char *) NULL, SM_IO_NBF, 439 SM_IO_BUFSIZ); 440 break; 441 442 case 'G': /* relay (gateway) submission */ 443 SubmitMode = SUBMIT_MTA; 444 break; 445 446 case 'L': 447 if (optarg == NULL) 448 { 449 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 450 "option requires an argument -- '%c'", 451 (char) j); 452 return EX_USAGE; 453 } 454 j = SM_MIN(strlen(optarg), 24) + 1; 455 sysloglabel = xalloc(j); 456 (void) sm_strlcpy(sysloglabel, optarg, j); 457 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + 458 SL_FUDGE + j; 459 break; 460 461 #if _FFR_QUARANTINE 462 case 'Q': 463 #endif /* _FFR_QUARANTINE */ 464 case 'q': 465 /* just check if it is there */ 466 queuerun = true; 467 break; 468 } 469 } 470 opterr = 1; 471 472 /* Don't leak queue information via debug flags */ 473 if (extraprivs && queuerun && debug) 474 { 475 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 476 "WARNING: Can not use -d with -q. Disabling debugging.\n"); 477 sm_debug_setfile(NULL); 478 (void) memset(tTdvect, '\0', sizeof tTdvect); 479 } 480 481 #if LOG 482 if (sysloglabel != NULL) 483 { 484 /* Sanitize the string */ 485 for (p = sysloglabel; *p != '\0'; p++) 486 { 487 if (!isascii(*p) || !isprint(*p) || *p == '%') 488 *p = '*'; 489 } 490 closelog(); 491 # ifdef LOG_MAIL 492 openlog(sysloglabel, LOG_PID, LOG_MAIL); 493 # else /* LOG_MAIL */ 494 openlog(sysloglabel, LOG_PID); 495 # endif /* LOG_MAIL */ 496 } 497 #endif /* LOG */ 498 499 /* set up the blank envelope */ 500 BlankEnvelope.e_puthdr = putheader; 501 BlankEnvelope.e_putbody = putbody; 502 BlankEnvelope.e_xfp = NULL; 503 STRUCTCOPY(NullAddress, BlankEnvelope.e_from); 504 CurEnv = &BlankEnvelope; 505 STRUCTCOPY(NullAddress, MainEnvelope.e_from); 506 507 /* 508 ** Set default values for variables. 509 ** These cannot be in initialized data space. 510 */ 511 512 setdefaults(&BlankEnvelope); 513 initmacros(&BlankEnvelope); 514 515 /* reset macro */ 516 set_op_mode(OpMode); 517 518 pw = sm_getpwuid(RealUid); 519 if (pw != NULL) 520 (void) sm_strlcpy(rnamebuf, pw->pw_name, sizeof rnamebuf); 521 else 522 (void) sm_snprintf(rnamebuf, sizeof rnamebuf, "Unknown UID %d", 523 (int) RealUid); 524 525 RealUserName = rnamebuf; 526 527 if (tTd(0, 101)) 528 { 529 sm_dprintf("Version %s\n", Version); 530 finis(false, true, EX_OK); 531 /* NOTREACHED */ 532 } 533 534 /* 535 ** if running non-set-user-ID binary as non-root, pretend 536 ** we are the RunAsUid 537 */ 538 539 if (RealUid != 0 && geteuid() == RealUid) 540 { 541 if (tTd(47, 1)) 542 sm_dprintf("Non-set-user-ID binary: RunAsUid = RealUid = %d\n", 543 (int) RealUid); 544 RunAsUid = RealUid; 545 } 546 else if (geteuid() != 0) 547 RunAsUid = geteuid(); 548 549 EffGid = getegid(); 550 if (RealUid != 0 && EffGid == RealGid) 551 RunAsGid = RealGid; 552 553 if (tTd(47, 5)) 554 { 555 sm_dprintf("main: e/ruid = %d/%d e/rgid = %d/%d\n", 556 (int) geteuid(), (int) getuid(), 557 (int) getegid(), (int) getgid()); 558 sm_dprintf("main: RunAsUser = %d:%d\n", 559 (int) RunAsUid, (int) RunAsGid); 560 } 561 562 /* save command line arguments */ 563 j = 0; 564 for (av = argv; *av != NULL; ) 565 j += strlen(*av++) + 1; 566 SaveArgv = (char **) xalloc(sizeof (char *) * (argc + 1)); 567 CommandLineArgs = xalloc(j); 568 p = CommandLineArgs; 569 for (av = argv, i = 0; *av != NULL; ) 570 { 571 int h; 572 573 SaveArgv[i++] = newstr(*av); 574 if (av != argv) 575 *p++ = ' '; 576 (void) sm_strlcpy(p, *av++, j); 577 h = strlen(p); 578 p += h; 579 j -= h + 1; 580 } 581 SaveArgv[i] = NULL; 582 583 if (tTd(0, 1)) 584 { 585 extern char *CompileOptions[]; 586 587 sm_dprintf("Version %s\n Compiled with:", Version); 588 sm_printoptions(CompileOptions); 589 } 590 if (tTd(0, 10)) 591 { 592 extern char *OsCompileOptions[]; 593 594 sm_dprintf(" OS Defines:"); 595 sm_printoptions(OsCompileOptions); 596 #ifdef _PATH_UNIX 597 sm_dprintf("Kernel symbols:\t%s\n", _PATH_UNIX); 598 #endif /* _PATH_UNIX */ 599 600 sm_dprintf(" Conf file:\t%s (default for MSP)\n", 601 getcfname(OpMode, SubmitMode, SM_GET_SUBMIT_CF, 602 conffile)); 603 sm_dprintf(" Conf file:\t%s (default for MTA)\n", 604 getcfname(OpMode, SubmitMode, SM_GET_SENDMAIL_CF, 605 conffile)); 606 sm_dprintf(" Pid file:\t%s (default)\n", PidFile); 607 } 608 609 if (tTd(0, 12)) 610 { 611 extern char *SmCompileOptions[]; 612 613 sm_dprintf(" libsm Defines:"); 614 sm_printoptions(SmCompileOptions); 615 } 616 617 if (tTd(0, 13)) 618 { 619 extern char *FFRCompileOptions[]; 620 621 sm_dprintf(" FFR Defines:"); 622 sm_printoptions(FFRCompileOptions); 623 } 624 625 /* clear sendmail's environment */ 626 ExternalEnviron = environ; 627 emptyenviron[0] = NULL; 628 environ = emptyenviron; 629 630 /* 631 ** restore any original TZ setting until TimeZoneSpec has been 632 ** determined - or early log messages may get bogus time stamps 633 */ 634 635 if ((p = getextenv("TZ")) != NULL) 636 { 637 char *tz; 638 int tzlen; 639 640 /* XXX check for reasonable length? */ 641 tzlen = strlen(p) + 4; 642 tz = xalloc(tzlen); 643 (void) sm_strlcpyn(tz, tzlen, 2, "TZ=", p); 644 645 /* XXX check return code? */ 646 (void) putenv(tz); 647 } 648 649 /* prime the child environment */ 650 setuserenv("AGENT", "sendmail"); 651 652 (void) sm_signal(SIGPIPE, SIG_IGN); 653 OldUmask = umask(022); 654 FullName = getextenv("NAME"); 655 if (FullName != NULL) 656 FullName = newstr(FullName); 657 658 /* 659 ** Initialize name server if it is going to be used. 660 */ 661 662 #if NAMED_BIND 663 if (!bitset(RES_INIT, _res.options)) 664 (void) res_init(); 665 if (tTd(8, 8)) 666 _res.options |= RES_DEBUG; 667 else 668 _res.options &= ~RES_DEBUG; 669 # ifdef RES_NOALIASES 670 if (bitset(RES_NOALIASES, _res.options)) 671 ResNoAliases = true; 672 _res.options |= RES_NOALIASES; 673 # endif /* RES_NOALIASES */ 674 TimeOuts.res_retry[RES_TO_DEFAULT] = _res.retry; 675 TimeOuts.res_retry[RES_TO_FIRST] = _res.retry; 676 TimeOuts.res_retry[RES_TO_NORMAL] = _res.retry; 677 TimeOuts.res_retrans[RES_TO_DEFAULT] = _res.retrans; 678 TimeOuts.res_retrans[RES_TO_FIRST] = _res.retrans; 679 TimeOuts.res_retrans[RES_TO_NORMAL] = _res.retrans; 680 #endif /* NAMED_BIND */ 681 682 errno = 0; 683 from = NULL; 684 685 /* initialize some macros, etc. */ 686 init_vendor_macros(&BlankEnvelope); 687 688 /* version */ 689 macdefine(&BlankEnvelope.e_macro, A_PERM, 'v', Version); 690 691 /* hostname */ 692 hp = myhostname(jbuf, sizeof jbuf); 693 if (jbuf[0] != '\0') 694 { 695 struct utsname utsname; 696 697 if (tTd(0, 4)) 698 sm_dprintf("Canonical name: %s\n", jbuf); 699 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'w', jbuf); 700 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'j', jbuf); 701 setclass('w', jbuf); 702 703 p = strchr(jbuf, '.'); 704 if (p != NULL) 705 { 706 if (p[1] != '\0') 707 { 708 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'm', 709 &p[1]); 710 } 711 while (p != NULL && strchr(&p[1], '.') != NULL) 712 { 713 *p = '\0'; 714 if (tTd(0, 4)) 715 sm_dprintf("\ta.k.a.: %s\n", jbuf); 716 setclass('w', jbuf); 717 *p++ = '.'; 718 p = strchr(p, '.'); 719 } 720 } 721 722 if (uname(&utsname) >= 0) 723 p = utsname.nodename; 724 else 725 { 726 if (tTd(0, 22)) 727 sm_dprintf("uname failed (%s)\n", 728 sm_errstring(errno)); 729 makelower(jbuf); 730 p = jbuf; 731 } 732 if (tTd(0, 4)) 733 sm_dprintf(" UUCP nodename: %s\n", p); 734 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'k', p); 735 setclass('k', p); 736 setclass('w', p); 737 } 738 if (hp != NULL) 739 { 740 for (av = hp->h_aliases; av != NULL && *av != NULL; av++) 741 { 742 if (tTd(0, 4)) 743 sm_dprintf("\ta.k.a.: %s\n", *av); 744 setclass('w', *av); 745 } 746 #if NETINET || NETINET6 747 for (i = 0; i >= 0 && hp->h_addr_list[i] != NULL; i++) 748 { 749 # if NETINET6 750 char *addr; 751 char buf6[INET6_ADDRSTRLEN]; 752 struct in6_addr ia6; 753 # endif /* NETINET6 */ 754 # if NETINET 755 struct in_addr ia; 756 # endif /* NETINET */ 757 char ipbuf[103]; 758 759 ipbuf[0] = '\0'; 760 switch (hp->h_addrtype) 761 { 762 # if NETINET 763 case AF_INET: 764 if (hp->h_length != INADDRSZ) 765 break; 766 767 memmove(&ia, hp->h_addr_list[i], INADDRSZ); 768 (void) sm_snprintf(ipbuf, sizeof ipbuf, 769 "[%.100s]", inet_ntoa(ia)); 770 break; 771 # endif /* NETINET */ 772 773 # if NETINET6 774 case AF_INET6: 775 if (hp->h_length != IN6ADDRSZ) 776 break; 777 778 memmove(&ia6, hp->h_addr_list[i], IN6ADDRSZ); 779 addr = anynet_ntop(&ia6, buf6, sizeof buf6); 780 if (addr != NULL) 781 (void) sm_snprintf(ipbuf, sizeof ipbuf, 782 "[%.100s]", addr); 783 break; 784 # endif /* NETINET6 */ 785 } 786 if (ipbuf[0] == '\0') 787 break; 788 789 if (tTd(0, 4)) 790 sm_dprintf("\ta.k.a.: %s\n", ipbuf); 791 setclass('w', ipbuf); 792 } 793 #endif /* NETINET || NETINET6 */ 794 #if NETINET6 795 freehostent(hp); 796 hp = NULL; 797 #endif /* NETINET6 */ 798 } 799 800 /* current time */ 801 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'b', arpadate((char *) NULL)); 802 803 /* current load average */ 804 sm_getla(); 805 806 QueueLimitRecipient = (QUEUE_CHAR *) NULL; 807 QueueLimitSender = (QUEUE_CHAR *) NULL; 808 QueueLimitId = (QUEUE_CHAR *) NULL; 809 #if _FFR_QUARANTINE 810 QueueLimitQuarantine = (QUEUE_CHAR *) NULL; 811 #endif /* _FFR_QUARANTINE */ 812 813 /* 814 ** Crack argv. 815 */ 816 817 optind = 1; 818 while ((j = getopt(argc, argv, OPTIONS)) != -1) 819 { 820 switch (j) 821 { 822 case 'b': /* operations mode */ 823 /* already done */ 824 break; 825 826 case 'A': /* use Alternate sendmail/submit.cf */ 827 cftype = optarg[0] == 'c' ? SM_GET_SUBMIT_CF 828 : SM_GET_SENDMAIL_CF; 829 break; 830 831 case 'B': /* body type */ 832 CHECK_AGAINST_OPMODE(j); 833 BlankEnvelope.e_bodytype = newstr(optarg); 834 break; 835 836 case 'C': /* select configuration file (already done) */ 837 if (RealUid != 0) 838 warn_C_flag = true; 839 conffile = newstr(optarg); 840 dp = drop_privileges(true); 841 setstat(dp); 842 safecf = false; 843 break; 844 845 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 #if _FFR_QUARANTINE 961 case 'Q': /* change quarantining on queued items */ 962 /* sanity check */ 963 if (OpMode != MD_DELIVER && 964 OpMode != MD_QUEUERUN) 965 { 966 usrerr("Can not use -Q with -b%c", OpMode); 967 ExitStat = EX_USAGE; 968 break; 969 } 970 971 if (OpMode == MD_DELIVER) 972 set_op_mode(MD_QUEUERUN); 973 974 FullName = NULL; 975 976 quarantining = newstr(optarg); 977 break; 978 #endif /* _FFR_QUARANTINE */ 979 980 case 'q': /* run queue files at intervals */ 981 /* sanity check */ 982 if (OpMode != MD_DELIVER && 983 OpMode != MD_DAEMON && 984 OpMode != MD_FGDAEMON && 985 OpMode != MD_PRINT && 986 OpMode != MD_PRINTNQE && 987 OpMode != MD_QUEUERUN) 988 { 989 usrerr("Can not use -q with -b%c", OpMode); 990 ExitStat = EX_USAGE; 991 break; 992 } 993 994 /* don't override -bd, -bD or -bp */ 995 if (OpMode == MD_DELIVER) 996 set_op_mode(MD_QUEUERUN); 997 998 FullName = NULL; 999 negate = optarg[0] == '!'; 1000 if (negate) 1001 { 1002 /* negate meaning of pattern match */ 1003 optarg++; /* skip '!' for next switch */ 1004 } 1005 1006 switch (optarg[0]) 1007 { 1008 case 'G': /* Limit by queue group name */ 1009 if (negate) 1010 { 1011 usrerr("Can not use -q!G"); 1012 ExitStat = EX_USAGE; 1013 break; 1014 } 1015 if (queuegroup != NULL) 1016 { 1017 usrerr("Can not use multiple -qG options"); 1018 ExitStat = EX_USAGE; 1019 break; 1020 } 1021 queuegroup = newstr(&optarg[1]); 1022 break; 1023 1024 case 'I': /* Limit by ID */ 1025 new = (QUEUE_CHAR *) xalloc(sizeof *new); 1026 new->queue_match = newstr(&optarg[1]); 1027 new->queue_negate = negate; 1028 new->queue_next = QueueLimitId; 1029 QueueLimitId = new; 1030 break; 1031 1032 case 'R': /* Limit by recipient */ 1033 new = (QUEUE_CHAR *) xalloc(sizeof *new); 1034 new->queue_match = newstr(&optarg[1]); 1035 new->queue_negate = negate; 1036 new->queue_next = QueueLimitRecipient; 1037 QueueLimitRecipient = new; 1038 break; 1039 1040 case 'S': /* Limit by sender */ 1041 new = (QUEUE_CHAR *) xalloc(sizeof *new); 1042 new->queue_match = newstr(&optarg[1]); 1043 new->queue_negate = negate; 1044 new->queue_next = QueueLimitSender; 1045 QueueLimitSender = new; 1046 break; 1047 1048 case 'f': /* foreground queue run */ 1049 foregroundqueue = true; 1050 break; 1051 1052 #if _FFR_QUARANTINE 1053 case 'Q': /* Limit by quarantine message */ 1054 if (optarg[1] != '\0') 1055 { 1056 new = (QUEUE_CHAR *) xalloc(sizeof *new); 1057 new->queue_match = newstr(&optarg[1]); 1058 new->queue_negate = negate; 1059 new->queue_next = QueueLimitQuarantine; 1060 QueueLimitQuarantine = new; 1061 } 1062 QueueMode = QM_QUARANTINE; 1063 break; 1064 1065 case 'L': /* act on lost items */ 1066 QueueMode = QM_LOST; 1067 break; 1068 #endif /* _FFR_QUARANTINE */ 1069 1070 case 'p': /* Persistent queue */ 1071 queuepersistent = true; 1072 if (QueueIntvl == 0) 1073 QueueIntvl = 1; 1074 if (optarg[1] == '\0') 1075 break; 1076 ++optarg; 1077 /* FALLTHROUGH */ 1078 1079 default: 1080 i = Errors; 1081 QueueIntvl = convtime(optarg, 'm'); 1082 if (QueueIntvl < 0) 1083 { 1084 usrerr("Invalid -q value"); 1085 ExitStat = EX_USAGE; 1086 } 1087 1088 /* check for bad conversion */ 1089 if (i < Errors) 1090 ExitStat = EX_USAGE; 1091 break; 1092 } 1093 break; 1094 1095 case 'R': /* DSN RET: what to return */ 1096 CHECK_AGAINST_OPMODE(j); 1097 if (bitset(EF_RET_PARAM, BlankEnvelope.e_flags)) 1098 { 1099 usrerr("Duplicate -R flag"); 1100 ExitStat = EX_USAGE; 1101 break; 1102 } 1103 BlankEnvelope.e_flags |= EF_RET_PARAM; 1104 if (sm_strcasecmp(optarg, "hdrs") == 0) 1105 BlankEnvelope.e_flags |= EF_NO_BODY_RETN; 1106 else if (sm_strcasecmp(optarg, "full") != 0) 1107 { 1108 usrerr("Invalid -R value"); 1109 ExitStat = EX_USAGE; 1110 } 1111 macdefine(&BlankEnvelope.e_macro, A_TEMP, 1112 macid("{dsn_ret}"), optarg); 1113 break; 1114 1115 case 't': /* read recipients from message */ 1116 CHECK_AGAINST_OPMODE(j); 1117 GrabTo = true; 1118 break; 1119 1120 case 'V': /* DSN ENVID: set "original" envelope id */ 1121 CHECK_AGAINST_OPMODE(j); 1122 if (!xtextok(optarg)) 1123 { 1124 usrerr("Invalid syntax in -V flag"); 1125 ExitStat = EX_USAGE; 1126 } 1127 else 1128 { 1129 BlankEnvelope.e_envid = newstr(optarg); 1130 macdefine(&BlankEnvelope.e_macro, A_TEMP, 1131 macid("{dsn_envid}"), optarg); 1132 } 1133 break; 1134 1135 case 'X': /* traffic log file */ 1136 dp = drop_privileges(true); 1137 setstat(dp); 1138 if (stat(optarg, &traf_st) == 0 && 1139 S_ISFIFO(traf_st.st_mode)) 1140 TrafficLogFile = sm_io_open(SmFtStdio, 1141 SM_TIME_DEFAULT, 1142 optarg, 1143 SM_IO_WRONLY, NULL); 1144 else 1145 TrafficLogFile = sm_io_open(SmFtStdio, 1146 SM_TIME_DEFAULT, 1147 optarg, 1148 SM_IO_APPEND, NULL); 1149 if (TrafficLogFile == NULL) 1150 { 1151 syserr("cannot open %s", optarg); 1152 ExitStat = EX_CANTCREAT; 1153 break; 1154 } 1155 (void) sm_io_setvbuf(TrafficLogFile, SM_TIME_DEFAULT, 1156 NULL, SM_IO_LBF, 0); 1157 break; 1158 1159 /* compatibility flags */ 1160 case 'c': /* connect to non-local mailers */ 1161 case 'i': /* don't let dot stop me */ 1162 case 'm': /* send to me too */ 1163 case 'T': /* set timeout interval */ 1164 case 'v': /* give blow-by-blow description */ 1165 setoption(j, "T", false, true, &BlankEnvelope); 1166 break; 1167 1168 case 'e': /* error message disposition */ 1169 case 'M': /* define macro */ 1170 setoption(j, optarg, false, true, &BlankEnvelope); 1171 break; 1172 1173 case 's': /* save From lines in headers */ 1174 setoption('f', "T", false, true, &BlankEnvelope); 1175 break; 1176 1177 #ifdef DBM 1178 case 'I': /* initialize alias DBM file */ 1179 set_op_mode(MD_INITALIAS); 1180 break; 1181 #endif /* DBM */ 1182 1183 #if defined(__osf__) || defined(_AIX3) 1184 case 'x': /* random flag that OSF/1 & AIX mailx passes */ 1185 break; 1186 #endif /* defined(__osf__) || defined(_AIX3) */ 1187 #if defined(sony_news) 1188 case 'E': 1189 case 'J': /* ignore flags for Japanese code conversion 1190 implemented on Sony NEWS */ 1191 break; 1192 #endif /* defined(sony_news) */ 1193 1194 default: 1195 finis(true, true, EX_USAGE); 1196 /* NOTREACHED */ 1197 break; 1198 } 1199 } 1200 1201 /* if we've had errors so far, exit now */ 1202 if ((ExitStat != EX_OK && OpMode != MD_TEST) || 1203 ExitStat == EX_OSERR) 1204 { 1205 finis(false, true, ExitStat); 1206 /* NOTREACHED */ 1207 } 1208 1209 if (bitset(SUBMIT_MTA, SubmitMode)) 1210 { 1211 /* If set daemon_flags on command line, don't reset it */ 1212 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL) 1213 macdefine(&BlankEnvelope.e_macro, A_PERM, 1214 macid("{daemon_flags}"), "CC f"); 1215 } 1216 else if (OpMode == MD_DELIVER || OpMode == MD_SMTP) 1217 { 1218 SubmitMode = SUBMIT_MSA; 1219 1220 /* If set daemon_flags on command line, don't reset it */ 1221 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL) 1222 macdefine(&BlankEnvelope.e_macro, A_PERM, 1223 macid("{daemon_flags}"), "c u"); 1224 } 1225 1226 /* 1227 ** Do basic initialization. 1228 ** Read system control file. 1229 ** Extract special fields for local use. 1230 */ 1231 1232 #if XDEBUG 1233 checkfd012("before readcf"); 1234 #endif /* XDEBUG */ 1235 vendor_pre_defaults(&BlankEnvelope); 1236 1237 readcf(getcfname(OpMode, SubmitMode, cftype, conffile), 1238 safecf, &BlankEnvelope); 1239 #if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) 1240 ConfigFileRead = true; 1241 #endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */ 1242 vendor_post_defaults(&BlankEnvelope); 1243 1244 /* now we can complain about missing fds */ 1245 if (MissingFds != 0 && LogLevel > 8) 1246 { 1247 char mbuf[MAXLINE]; 1248 1249 mbuf[0] = '\0'; 1250 if (bitset(1 << STDIN_FILENO, MissingFds)) 1251 (void) sm_strlcat(mbuf, ", stdin", sizeof mbuf); 1252 if (bitset(1 << STDOUT_FILENO, MissingFds)) 1253 (void) sm_strlcat(mbuf, ", stdout", sizeof mbuf); 1254 if (bitset(1 << STDERR_FILENO, MissingFds)) 1255 (void) sm_strlcat(mbuf, ", stderr", sizeof mbuf); 1256 1257 /* Notice: fill_errno is from high above: fill_fd() */ 1258 sm_syslog(LOG_WARNING, NOQID, 1259 "File descriptors missing on startup: %s; %s", 1260 &mbuf[2], sm_errstring(fill_errno)); 1261 } 1262 1263 /* Remove the ability for a normal user to send signals */ 1264 if (RealUid != 0 && RealUid != geteuid()) 1265 { 1266 uid_t new_uid = geteuid(); 1267 1268 #if HASSETREUID 1269 /* 1270 ** Since we can differentiate between uid and euid, 1271 ** make the uid a different user so the real user 1272 ** can't send signals. However, it doesn't need to be 1273 ** root (euid has root). 1274 */ 1275 1276 if (new_uid == 0) 1277 new_uid = DefUid; 1278 if (tTd(47, 5)) 1279 sm_dprintf("Changing real uid to %d\n", (int) new_uid); 1280 if (setreuid(new_uid, geteuid()) < 0) 1281 { 1282 syserr("main: setreuid(%d, %d) failed", 1283 (int) new_uid, (int) geteuid()); 1284 finis(false, true, EX_OSERR); 1285 /* NOTREACHED */ 1286 } 1287 if (tTd(47, 10)) 1288 sm_dprintf("Now running as e/ruid %d:%d\n", 1289 (int) geteuid(), (int) getuid()); 1290 #else /* HASSETREUID */ 1291 /* 1292 ** Have to change both effective and real so need to 1293 ** change them both to effective to keep privs. 1294 */ 1295 1296 if (tTd(47, 5)) 1297 sm_dprintf("Changing uid to %d\n", (int) new_uid); 1298 if (setuid(new_uid) < 0) 1299 { 1300 syserr("main: setuid(%d) failed", (int) new_uid); 1301 finis(false, true, EX_OSERR); 1302 /* NOTREACHED */ 1303 } 1304 if (tTd(47, 10)) 1305 sm_dprintf("Now running as e/ruid %d:%d\n", 1306 (int) geteuid(), (int) getuid()); 1307 #endif /* HASSETREUID */ 1308 } 1309 1310 #if NAMED_BIND 1311 if (FallBackMX != NULL) 1312 (void) getfallbackmxrr(FallBackMX); 1313 #endif /* NAMED_BIND */ 1314 1315 if (SuperSafe == SAFE_INTERACTIVE && CurEnv->e_sendmode != SM_DELIVER) 1316 { 1317 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1318 "WARNING: SuperSafe=interactive should only be used with\n DeliveryMode=interactive\n"); 1319 } 1320 1321 if (UseMSP && (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON)) 1322 { 1323 usrerr("Mail submission program cannot be used as daemon"); 1324 finis(false, true, EX_USAGE); 1325 } 1326 1327 if (OpMode == MD_DELIVER || OpMode == MD_SMTP || 1328 OpMode == MD_QUEUERUN || OpMode == MD_ARPAFTP || 1329 OpMode == MD_DAEMON || OpMode == MD_FGDAEMON) 1330 makeworkgroups(); 1331 1332 /* set up the basic signal handlers */ 1333 if (sm_signal(SIGINT, SIG_IGN) != SIG_IGN) 1334 (void) sm_signal(SIGINT, intsig); 1335 (void) sm_signal(SIGTERM, intsig); 1336 1337 /* Enforce use of local time (null string overrides this) */ 1338 if (TimeZoneSpec == NULL) 1339 unsetenv("TZ"); 1340 else if (TimeZoneSpec[0] != '\0') 1341 setuserenv("TZ", TimeZoneSpec); 1342 else 1343 setuserenv("TZ", NULL); 1344 tzset(); 1345 1346 /* initialize mailbox database */ 1347 i = sm_mbdb_initialize(Mbdb); 1348 if (i != EX_OK) 1349 { 1350 usrerr("Can't initialize mailbox database \"%s\": %s", 1351 Mbdb, sm_strexit(i)); 1352 ExitStat = i; 1353 } 1354 1355 /* avoid denial-of-service attacks */ 1356 resetlimits(); 1357 1358 if (OpMode == MD_TEST) 1359 { 1360 /* can't be done after readcf if RunAs* is used */ 1361 dp = drop_privileges(true); 1362 if (dp != EX_OK) 1363 { 1364 finis(false, true, dp); 1365 /* NOTREACHED */ 1366 } 1367 } 1368 else if (OpMode != MD_DAEMON && OpMode != MD_FGDAEMON) 1369 { 1370 /* drop privileges -- daemon mode done after socket/bind */ 1371 dp = drop_privileges(false); 1372 setstat(dp); 1373 if (dp == EX_OK && UseMSP && (geteuid() == 0 || getuid() == 0)) 1374 { 1375 usrerr("Mail submission program must have RunAsUser set to non root user"); 1376 finis(false, true, EX_CONFIG); 1377 /* NOTREACHED */ 1378 } 1379 } 1380 1381 #if NAMED_BIND 1382 _res.retry = TimeOuts.res_retry[RES_TO_DEFAULT]; 1383 _res.retrans = TimeOuts.res_retrans[RES_TO_DEFAULT]; 1384 #endif /* NAMED_BIND */ 1385 1386 /* 1387 ** Find our real host name for future logging. 1388 */ 1389 1390 authinfo = getauthinfo(STDIN_FILENO, &forged); 1391 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 1392 1393 /* suppress error printing if errors mailed back or whatever */ 1394 if (BlankEnvelope.e_errormode != EM_PRINT) 1395 HoldErrs = true; 1396 1397 /* set up the $=m class now, after .cf has a chance to redefine $m */ 1398 expand("\201m", jbuf, sizeof jbuf, &BlankEnvelope); 1399 if (jbuf[0] != '\0') 1400 setclass('m', jbuf); 1401 1402 /* probe interfaces and locate any additional names */ 1403 if (DontProbeInterfaces != DPI_PROBENONE) 1404 load_if_names(); 1405 1406 if (tTd(0, 10)) 1407 { 1408 char pidpath[MAXPATHLEN]; 1409 1410 /* Now we know which .cf file we use */ 1411 sm_dprintf(" Conf file:\t%s (selected)\n", 1412 getcfname(OpMode, SubmitMode, cftype, conffile)); 1413 expand(PidFile, pidpath, sizeof pidpath, &BlankEnvelope); 1414 sm_dprintf(" Pid file:\t%s (selected)\n", pidpath); 1415 } 1416 1417 if (tTd(0, 1)) 1418 { 1419 sm_dprintf("\n============ SYSTEM IDENTITY (after readcf) ============"); 1420 sm_dprintf("\n (short domain name) $w = "); 1421 xputs(macvalue('w', &BlankEnvelope)); 1422 sm_dprintf("\n (canonical domain name) $j = "); 1423 xputs(macvalue('j', &BlankEnvelope)); 1424 sm_dprintf("\n (subdomain name) $m = "); 1425 xputs(macvalue('m', &BlankEnvelope)); 1426 sm_dprintf("\n (node name) $k = "); 1427 xputs(macvalue('k', &BlankEnvelope)); 1428 sm_dprintf("\n========================================================\n\n"); 1429 } 1430 1431 /* 1432 ** Do more command line checking -- these are things that 1433 ** have to modify the results of reading the config file. 1434 */ 1435 1436 /* process authorization warnings from command line */ 1437 if (warn_C_flag) 1438 auth_warning(&BlankEnvelope, "Processed by %s with -C %s", 1439 RealUserName, conffile); 1440 if (Warn_Q_option && !wordinclass(RealUserName, 't')) 1441 auth_warning(&BlankEnvelope, "Processed from queue %s", 1442 QueueDir); 1443 if (sysloglabel != NULL && !wordinclass(RealUserName, 't') && 1444 RealUid != 0 && RealUid != TrustedUid && LogLevel > 1) 1445 sm_syslog(LOG_WARNING, NOQID, "user %d changed syslog label", 1446 (int) RealUid); 1447 1448 /* check body type for legality */ 1449 i = check_bodytype(BlankEnvelope.e_bodytype); 1450 if (i == BODYTYPE_ILLEGAL) 1451 { 1452 usrerr("Illegal body type %s", BlankEnvelope.e_bodytype); 1453 BlankEnvelope.e_bodytype = NULL; 1454 } 1455 else if (i != BODYTYPE_NONE) 1456 SevenBitInput = (i == BODYTYPE_7BIT); 1457 1458 /* tweak default DSN notifications */ 1459 if (DefaultNotify == 0) 1460 DefaultNotify = QPINGONFAILURE|QPINGONDELAY; 1461 1462 /* be sure we don't pick up bogus HOSTALIASES environment variable */ 1463 if (OpMode == MD_QUEUERUN && RealUid != 0) 1464 (void) unsetenv("HOSTALIASES"); 1465 1466 /* check for sane configuration level */ 1467 if (ConfigLevel > MAXCONFIGLEVEL) 1468 { 1469 syserr("Warning: .cf version level (%d) exceeds sendmail version %s functionality (%d)", 1470 ConfigLevel, Version, MAXCONFIGLEVEL); 1471 } 1472 1473 /* need MCI cache to have persistence */ 1474 if (HostStatDir != NULL && MaxMciCache == 0) 1475 { 1476 HostStatDir = NULL; 1477 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1478 "Warning: HostStatusDirectory disabled with ConnectionCacheSize = 0\n"); 1479 } 1480 1481 /* need HostStatusDir in order to have SingleThreadDelivery */ 1482 if (SingleThreadDelivery && HostStatDir == NULL) 1483 { 1484 SingleThreadDelivery = false; 1485 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1486 "Warning: HostStatusDirectory required for SingleThreadDelivery\n"); 1487 } 1488 1489 /* check for permissions */ 1490 if (RealUid != 0 && 1491 RealUid != TrustedUid) 1492 { 1493 char *action = NULL; 1494 1495 switch (OpMode) 1496 { 1497 case MD_QUEUERUN: 1498 #if _FFR_QUARANTINE 1499 if (quarantining != NULL) 1500 action = "quarantine jobs"; 1501 else 1502 #endif /* _FFR_QUARANTINE */ 1503 /* Normal users can do a single queue run */ 1504 if (QueueIntvl == 0) 1505 break; 1506 1507 /* but not persistent queue runners */ 1508 if (action == NULL) 1509 action = "start a queue runner daemon"; 1510 /* FALLTHROUGH */ 1511 1512 case MD_PURGESTAT: 1513 if (action == NULL) 1514 action = "purge host status"; 1515 /* FALLTHROUGH */ 1516 1517 case MD_DAEMON: 1518 case MD_FGDAEMON: 1519 if (action == NULL) 1520 action = "run daemon"; 1521 1522 if (tTd(65, 1)) 1523 sm_dprintf("Deny user %d attempt to %s\n", 1524 (int) RealUid, action); 1525 1526 if (LogLevel > 1) 1527 sm_syslog(LOG_ALERT, NOQID, 1528 "user %d attempted to %s", 1529 (int) RealUid, action); 1530 HoldErrs = false; 1531 usrerr("Permission denied (real uid not trusted)"); 1532 finis(false, true, EX_USAGE); 1533 /* NOTREACHED */ 1534 break; 1535 1536 case MD_VERIFY: 1537 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags)) 1538 { 1539 /* 1540 ** If -bv and RestrictExpand, 1541 ** drop privs to prevent normal 1542 ** users from reading private 1543 ** aliases/forwards/:include:s 1544 */ 1545 1546 if (tTd(65, 1)) 1547 sm_dprintf("Drop privs for user %d attempt to expand (RestrictExpand)\n", 1548 (int) RealUid); 1549 1550 dp = drop_privileges(true); 1551 1552 /* Fake address safety */ 1553 if (tTd(65, 1)) 1554 sm_dprintf("Faking DontBlameSendmail=NonRootSafeAddr\n"); 1555 setbitn(DBS_NONROOTSAFEADDR, DontBlameSendmail); 1556 1557 if (dp != EX_OK) 1558 { 1559 if (tTd(65, 1)) 1560 sm_dprintf("Failed to drop privs for user %d attempt to expand, exiting\n", 1561 (int) RealUid); 1562 CurEnv->e_id = NULL; 1563 finis(true, true, dp); 1564 /* NOTREACHED */ 1565 } 1566 } 1567 break; 1568 1569 case MD_TEST: 1570 case MD_PRINT: 1571 case MD_PRINTNQE: 1572 case MD_FREEZE: 1573 case MD_HOSTSTAT: 1574 /* Nothing special to check */ 1575 break; 1576 1577 case MD_INITALIAS: 1578 if (!wordinclass(RealUserName, 't')) 1579 { 1580 if (tTd(65, 1)) 1581 sm_dprintf("Deny user %d attempt to rebuild the alias map\n", 1582 (int) RealUid); 1583 if (LogLevel > 1) 1584 sm_syslog(LOG_ALERT, NOQID, 1585 "user %d attempted to rebuild the alias map", 1586 (int) RealUid); 1587 HoldErrs = false; 1588 usrerr("Permission denied (real uid not trusted)"); 1589 finis(false, true, EX_USAGE); 1590 /* NOTREACHED */ 1591 } 1592 if (UseMSP) 1593 { 1594 HoldErrs = false; 1595 usrerr("User %d cannot rebuild aliases in mail submission program", 1596 (int) RealUid); 1597 finis(false, true, EX_USAGE); 1598 /* NOTREACHED */ 1599 } 1600 /* FALLTHROUGH */ 1601 1602 default: 1603 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags) && 1604 Verbose != 0) 1605 { 1606 /* 1607 ** If -v and RestrictExpand, reset 1608 ** Verbose to prevent normal users 1609 ** from seeing the expansion of 1610 ** aliases/forwards/:include:s 1611 */ 1612 1613 if (tTd(65, 1)) 1614 sm_dprintf("Dropping verbosity for user %d (RestrictExpand)\n", 1615 (int) RealUid); 1616 Verbose = 0; 1617 } 1618 break; 1619 } 1620 } 1621 1622 if (MeToo) 1623 BlankEnvelope.e_flags |= EF_METOO; 1624 1625 switch (OpMode) 1626 { 1627 case MD_TEST: 1628 /* don't have persistent host status in test mode */ 1629 HostStatDir = NULL; 1630 if (Verbose == 0) 1631 Verbose = 2; 1632 BlankEnvelope.e_errormode = EM_PRINT; 1633 HoldErrs = false; 1634 break; 1635 1636 case MD_VERIFY: 1637 BlankEnvelope.e_errormode = EM_PRINT; 1638 HoldErrs = false; 1639 /* arrange to exit cleanly on hangup signal */ 1640 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL) 1641 (void) sm_signal(SIGHUP, intsig); 1642 if (geteuid() != 0) 1643 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1644 "Notice: -bv may give misleading output for non-privileged user\n"); 1645 break; 1646 1647 case MD_FGDAEMON: 1648 run_in_foreground = true; 1649 set_op_mode(MD_DAEMON); 1650 /* FALLTHROUGH */ 1651 1652 case MD_DAEMON: 1653 vendor_daemon_setup(&BlankEnvelope); 1654 1655 /* remove things that don't make sense in daemon mode */ 1656 FullName = NULL; 1657 GrabTo = false; 1658 1659 /* arrange to restart on hangup signal */ 1660 if (SaveArgv[0] == NULL || SaveArgv[0][0] != '/') 1661 sm_syslog(LOG_WARNING, NOQID, 1662 "daemon invoked without full pathname; kill -1 won't work"); 1663 break; 1664 1665 case MD_INITALIAS: 1666 Verbose = 2; 1667 BlankEnvelope.e_errormode = EM_PRINT; 1668 HoldErrs = false; 1669 /* FALLTHROUGH */ 1670 1671 default: 1672 /* arrange to exit cleanly on hangup signal */ 1673 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL) 1674 (void) sm_signal(SIGHUP, intsig); 1675 break; 1676 } 1677 1678 /* special considerations for FullName */ 1679 if (FullName != NULL) 1680 { 1681 char *full = NULL; 1682 1683 /* full names can't have newlines */ 1684 if (strchr(FullName, '\n') != NULL) 1685 { 1686 full = newstr(denlstring(FullName, true, true)); 1687 FullName = full; 1688 } 1689 1690 /* check for characters that may have to be quoted */ 1691 if (!rfc822_string(FullName)) 1692 { 1693 /* 1694 ** Quote a full name with special characters 1695 ** as a comment so crackaddr() doesn't destroy 1696 ** the name portion of the address. 1697 */ 1698 1699 FullName = addquotes(FullName, NULL); 1700 if (full != NULL) 1701 sm_free(full); /* XXX */ 1702 } 1703 } 1704 1705 /* do heuristic mode adjustment */ 1706 if (Verbose) 1707 { 1708 /* turn off noconnect option */ 1709 setoption('c', "F", true, false, &BlankEnvelope); 1710 1711 /* turn on interactive delivery */ 1712 setoption('d', "", true, false, &BlankEnvelope); 1713 } 1714 1715 #ifdef VENDOR_CODE 1716 /* check for vendor mismatch */ 1717 if (VendorCode != VENDOR_CODE) 1718 { 1719 message("Warning: .cf file vendor code mismatch: sendmail expects vendor %s, .cf file vendor is %s", 1720 getvendor(VENDOR_CODE), getvendor(VendorCode)); 1721 } 1722 #endif /* VENDOR_CODE */ 1723 1724 /* check for out of date configuration level */ 1725 if (ConfigLevel < MAXCONFIGLEVEL) 1726 { 1727 message("Warning: .cf file is out of date: sendmail %s supports version %d, .cf file is version %d", 1728 Version, MAXCONFIGLEVEL, ConfigLevel); 1729 } 1730 1731 if (ConfigLevel < 3) 1732 UseErrorsTo = true; 1733 1734 /* set options that were previous macros */ 1735 if (SmtpGreeting == NULL) 1736 { 1737 if (ConfigLevel < 7 && 1738 (p = macvalue('e', &BlankEnvelope)) != NULL) 1739 SmtpGreeting = newstr(p); 1740 else 1741 SmtpGreeting = "\201j Sendmail \201v ready at \201b"; 1742 } 1743 if (UnixFromLine == NULL) 1744 { 1745 if (ConfigLevel < 7 && 1746 (p = macvalue('l', &BlankEnvelope)) != NULL) 1747 UnixFromLine = newstr(p); 1748 else 1749 UnixFromLine = "From \201g \201d"; 1750 } 1751 SmtpError[0] = '\0'; 1752 1753 /* our name for SMTP codes */ 1754 expand("\201j", jbuf, sizeof jbuf, &BlankEnvelope); 1755 if (jbuf[0] == '\0') 1756 PSTRSET(MyHostName, "localhost"); 1757 else 1758 PSTRSET(MyHostName, jbuf); 1759 if (strchr(MyHostName, '.') == NULL) 1760 message("WARNING: local host name (%s) is not qualified; fix $j in config file", 1761 MyHostName); 1762 1763 /* make certain that this name is part of the $=w class */ 1764 setclass('w', MyHostName); 1765 1766 /* fill in the structure of the *default* queue */ 1767 st = stab("mqueue", ST_QUEUE, ST_FIND); 1768 if (st == NULL) 1769 syserr("No default queue (mqueue) defined"); 1770 else 1771 set_def_queueval(st->s_quegrp, true); 1772 1773 /* the indices of built-in mailers */ 1774 st = stab("local", ST_MAILER, ST_FIND); 1775 if (st != NULL) 1776 LocalMailer = st->s_mailer; 1777 else if (OpMode != MD_TEST || !warn_C_flag) 1778 syserr("No local mailer defined"); 1779 1780 st = stab("prog", ST_MAILER, ST_FIND); 1781 if (st == NULL) 1782 syserr("No prog mailer defined"); 1783 else 1784 { 1785 ProgMailer = st->s_mailer; 1786 clrbitn(M_MUSER, ProgMailer->m_flags); 1787 } 1788 1789 st = stab("*file*", ST_MAILER, ST_FIND); 1790 if (st == NULL) 1791 syserr("No *file* mailer defined"); 1792 else 1793 { 1794 FileMailer = st->s_mailer; 1795 clrbitn(M_MUSER, FileMailer->m_flags); 1796 } 1797 1798 st = stab("*include*", ST_MAILER, ST_FIND); 1799 if (st == NULL) 1800 syserr("No *include* mailer defined"); 1801 else 1802 InclMailer = st->s_mailer; 1803 1804 if (ConfigLevel < 6) 1805 { 1806 /* heuristic tweaking of local mailer for back compat */ 1807 if (LocalMailer != NULL) 1808 { 1809 setbitn(M_ALIASABLE, LocalMailer->m_flags); 1810 setbitn(M_HASPWENT, LocalMailer->m_flags); 1811 setbitn(M_TRYRULESET5, LocalMailer->m_flags); 1812 setbitn(M_CHECKINCLUDE, LocalMailer->m_flags); 1813 setbitn(M_CHECKPROG, LocalMailer->m_flags); 1814 setbitn(M_CHECKFILE, LocalMailer->m_flags); 1815 setbitn(M_CHECKUDB, LocalMailer->m_flags); 1816 } 1817 if (ProgMailer != NULL) 1818 setbitn(M_RUNASRCPT, ProgMailer->m_flags); 1819 if (FileMailer != NULL) 1820 setbitn(M_RUNASRCPT, FileMailer->m_flags); 1821 } 1822 if (ConfigLevel < 7) 1823 { 1824 if (LocalMailer != NULL) 1825 setbitn(M_VRFY250, LocalMailer->m_flags); 1826 if (ProgMailer != NULL) 1827 setbitn(M_VRFY250, ProgMailer->m_flags); 1828 if (FileMailer != NULL) 1829 setbitn(M_VRFY250, FileMailer->m_flags); 1830 } 1831 1832 /* MIME Content-Types that cannot be transfer encoded */ 1833 setclass('n', "multipart/signed"); 1834 1835 /* MIME message/xxx subtypes that can be treated as messages */ 1836 setclass('s', "rfc822"); 1837 1838 /* MIME Content-Transfer-Encodings that can be encoded */ 1839 setclass('e', "7bit"); 1840 setclass('e', "8bit"); 1841 setclass('e', "binary"); 1842 1843 #ifdef USE_B_CLASS 1844 /* MIME Content-Types that should be treated as binary */ 1845 setclass('b', "image"); 1846 setclass('b', "audio"); 1847 setclass('b', "video"); 1848 setclass('b', "application/octet-stream"); 1849 #endif /* USE_B_CLASS */ 1850 1851 /* MIME headers which have fields to check for overflow */ 1852 setclass(macid("{checkMIMEFieldHeaders}"), "content-disposition"); 1853 setclass(macid("{checkMIMEFieldHeaders}"), "content-type"); 1854 1855 /* MIME headers to check for length overflow */ 1856 setclass(macid("{checkMIMETextHeaders}"), "content-description"); 1857 1858 /* MIME headers to check for overflow and rebalance */ 1859 setclass(macid("{checkMIMEHeaders}"), "content-disposition"); 1860 setclass(macid("{checkMIMEHeaders}"), "content-id"); 1861 setclass(macid("{checkMIMEHeaders}"), "content-transfer-encoding"); 1862 setclass(macid("{checkMIMEHeaders}"), "content-type"); 1863 setclass(macid("{checkMIMEHeaders}"), "mime-version"); 1864 1865 /* Macros to save in the queue file -- don't remove any */ 1866 setclass(macid("{persistentMacros}"), "r"); 1867 setclass(macid("{persistentMacros}"), "s"); 1868 setclass(macid("{persistentMacros}"), "_"); 1869 setclass(macid("{persistentMacros}"), "{if_addr}"); 1870 setclass(macid("{persistentMacros}"), "{daemon_flags}"); 1871 1872 /* operate in queue directory */ 1873 if (QueueDir == NULL || *QueueDir == '\0') 1874 { 1875 if (OpMode != MD_TEST) 1876 { 1877 syserr("QueueDirectory (Q) option must be set"); 1878 ExitStat = EX_CONFIG; 1879 } 1880 } 1881 else 1882 { 1883 if (OpMode != MD_TEST) 1884 setup_queues(OpMode == MD_DAEMON); 1885 } 1886 1887 /* check host status directory for validity */ 1888 if (HostStatDir != NULL && !path_is_dir(HostStatDir, false)) 1889 { 1890 /* cannot use this value */ 1891 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1892 "Warning: Cannot use HostStatusDirectory = %s: %s\n", 1893 HostStatDir, sm_errstring(errno)); 1894 HostStatDir = NULL; 1895 } 1896 1897 if (OpMode == MD_QUEUERUN && 1898 RealUid != 0 && bitset(PRIV_RESTRICTQRUN, PrivacyFlags)) 1899 { 1900 struct stat stbuf; 1901 1902 /* check to see if we own the queue directory */ 1903 if (stat(".", &stbuf) < 0) 1904 syserr("main: cannot stat %s", QueueDir); 1905 if (stbuf.st_uid != RealUid) 1906 { 1907 /* nope, really a botch */ 1908 HoldErrs = false; 1909 usrerr("You do not have permission to process the queue"); 1910 finis(false, true, EX_NOPERM); 1911 /* NOTREACHED */ 1912 } 1913 } 1914 1915 #if MILTER 1916 /* sanity checks on milter filters */ 1917 if (OpMode == MD_DAEMON || OpMode == MD_SMTP) 1918 { 1919 milter_config(InputFilterList, InputFilters, MAXFILTERS); 1920 # if _FFR_MILTER_PERDAEMON 1921 setup_daemon_milters(); 1922 # endif /* _FFR_MILTER_PERDAEMON */ 1923 } 1924 #endif /* MILTER */ 1925 1926 /* Convert queuegroup string to qgrp number */ 1927 if (queuegroup != NULL) 1928 { 1929 qgrp = name2qid(queuegroup); 1930 if (qgrp == NOQGRP) 1931 { 1932 HoldErrs = false; 1933 usrerr("Queue group %s unknown", queuegroup); 1934 finis(false, true, ExitStat); 1935 /* NOTREACHED */ 1936 } 1937 } 1938 1939 /* if we've had errors so far, exit now */ 1940 if (ExitStat != EX_OK && OpMode != MD_TEST) 1941 { 1942 finis(false, true, ExitStat); 1943 /* NOTREACHED */ 1944 } 1945 1946 #if SASL 1947 /* sendmail specific SASL initialization */ 1948 sm_sasl_init(); 1949 #endif /* SASL */ 1950 1951 #if XDEBUG 1952 checkfd012("before main() initmaps"); 1953 #endif /* XDEBUG */ 1954 1955 /* 1956 ** Do operation-mode-dependent initialization. 1957 */ 1958 1959 switch (OpMode) 1960 { 1961 case MD_PRINT: 1962 /* print the queue */ 1963 HoldErrs = false; 1964 dropenvelope(&BlankEnvelope, true, false); 1965 (void) sm_signal(SIGPIPE, sigpipe); 1966 if (qgrp != NOQGRP) 1967 { 1968 int j; 1969 1970 /* Selecting a particular queue group to run */ 1971 for (j = 0; j < Queue[qgrp]->qg_numqueues; j++) 1972 { 1973 if (StopRequest) 1974 stop_sendmail(); 1975 (void) print_single_queue(qgrp, j); 1976 } 1977 finis(false, true, EX_OK); 1978 /* NOTREACHED */ 1979 } 1980 printqueue(); 1981 finis(false, true, EX_OK); 1982 /* NOTREACHED */ 1983 break; 1984 1985 case MD_PRINTNQE: 1986 /* print number of entries in queue */ 1987 dropenvelope(&BlankEnvelope, true, false); 1988 (void) sm_signal(SIGPIPE, sigpipe); 1989 printnqe(smioout, NULL); 1990 finis(false, true, EX_OK); 1991 /* NOTREACHED */ 1992 break; 1993 1994 #if _FFR_QUARANTINE 1995 case MD_QUEUERUN: 1996 /* only handle quarantining here */ 1997 if (quarantining == NULL) 1998 break; 1999 2000 if (QueueMode != QM_QUARANTINE && 2001 QueueMode != QM_NORMAL) 2002 { 2003 HoldErrs = false; 2004 usrerr("Can not use -Q with -q%c", QueueMode); 2005 ExitStat = EX_USAGE; 2006 finis(false, true, ExitStat); 2007 /* NOTREACHED */ 2008 } 2009 quarantine_queue(quarantining, qgrp); 2010 finis(false, true, EX_OK); 2011 break; 2012 #endif /* _FFR_QUARANTINE */ 2013 2014 case MD_HOSTSTAT: 2015 (void) sm_signal(SIGPIPE, sigpipe); 2016 (void) mci_traverse_persistent(mci_print_persistent, NULL); 2017 finis(false, true, EX_OK); 2018 /* NOTREACHED */ 2019 break; 2020 2021 case MD_PURGESTAT: 2022 (void) mci_traverse_persistent(mci_purge_persistent, NULL); 2023 finis(false, true, EX_OK); 2024 /* NOTREACHED */ 2025 break; 2026 2027 case MD_INITALIAS: 2028 /* initialize maps */ 2029 initmaps(); 2030 finis(false, true, ExitStat); 2031 /* NOTREACHED */ 2032 break; 2033 2034 case MD_SMTP: 2035 case MD_DAEMON: 2036 /* reset DSN parameters */ 2037 DefaultNotify = QPINGONFAILURE|QPINGONDELAY; 2038 macdefine(&BlankEnvelope.e_macro, A_PERM, 2039 macid("{dsn_notify}"), NULL); 2040 BlankEnvelope.e_envid = NULL; 2041 macdefine(&BlankEnvelope.e_macro, A_PERM, 2042 macid("{dsn_envid}"), NULL); 2043 BlankEnvelope.e_flags &= ~(EF_RET_PARAM|EF_NO_BODY_RETN); 2044 macdefine(&BlankEnvelope.e_macro, A_PERM, 2045 macid("{dsn_ret}"), NULL); 2046 2047 /* don't open maps for daemon -- done below in child */ 2048 break; 2049 } 2050 2051 if (tTd(0, 15)) 2052 { 2053 /* print configuration table (or at least part of it) */ 2054 if (tTd(0, 90)) 2055 printrules(); 2056 for (i = 0; i < MAXMAILERS; i++) 2057 { 2058 if (Mailer[i] != NULL) 2059 printmailer(Mailer[i]); 2060 } 2061 } 2062 2063 /* 2064 ** Switch to the main envelope. 2065 */ 2066 2067 CurEnv = newenvelope(&MainEnvelope, &BlankEnvelope, 2068 sm_rpool_new_x(NULL)); 2069 MainEnvelope.e_flags = BlankEnvelope.e_flags; 2070 2071 /* 2072 ** If test mode, read addresses from stdin and process. 2073 */ 2074 2075 if (OpMode == MD_TEST) 2076 { 2077 if (isatty(sm_io_getinfo(smioin, SM_IO_WHAT_FD, NULL))) 2078 Verbose = 2; 2079 2080 if (Verbose) 2081 { 2082 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2083 "ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n"); 2084 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2085 "Enter <ruleset> <address>\n"); 2086 } 2087 macdefine(&(MainEnvelope.e_macro), A_PERM, 2088 macid("{addr_type}"), "e r"); 2089 for (;;) 2090 { 2091 SM_TRY 2092 { 2093 (void) sm_signal(SIGINT, intindebug); 2094 (void) sm_releasesignal(SIGINT); 2095 if (Verbose == 2) 2096 (void) sm_io_fprintf(smioout, 2097 SM_TIME_DEFAULT, 2098 "> "); 2099 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 2100 if (sm_io_fgets(smioin, SM_TIME_DEFAULT, buf, 2101 sizeof buf) == NULL) 2102 testmodeline("/quit", &MainEnvelope); 2103 p = strchr(buf, '\n'); 2104 if (p != NULL) 2105 *p = '\0'; 2106 if (Verbose < 2) 2107 (void) sm_io_fprintf(smioout, 2108 SM_TIME_DEFAULT, 2109 "> %s\n", buf); 2110 testmodeline(buf, &MainEnvelope); 2111 } 2112 SM_EXCEPT(exc, "[!F]*") 2113 { 2114 /* 2115 ** 8.10 just prints \n on interrupt. 2116 ** I'm printing the exception here in case 2117 ** sendmail is extended to raise additional 2118 ** exceptions in this context. 2119 */ 2120 2121 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2122 "\n"); 2123 sm_exc_print(exc, smioout); 2124 } 2125 SM_END_TRY 2126 } 2127 } 2128 2129 #if STARTTLS 2130 tls_ok = true; 2131 if (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER) 2132 { 2133 /* check whether STARTTLS is turned off for the client */ 2134 if (chkclientmodifiers(D_NOTLS)) 2135 tls_ok = false; 2136 } 2137 else if (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON || 2138 OpMode == MD_SMTP) 2139 { 2140 /* check whether STARTTLS is turned off for the server */ 2141 if (chkdaemonmodifiers(D_NOTLS)) 2142 tls_ok = false; 2143 } 2144 else /* other modes don't need STARTTLS */ 2145 tls_ok = false; 2146 2147 if (tls_ok) 2148 { 2149 /* basic TLS initialization */ 2150 tls_ok = init_tls_library(); 2151 } 2152 2153 if (!tls_ok && (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER)) 2154 { 2155 /* disable TLS for client */ 2156 setclttls(false); 2157 } 2158 #endif /* STARTTLS */ 2159 2160 /* 2161 ** If collecting stuff from the queue, go start doing that. 2162 */ 2163 2164 if (OpMode == MD_QUEUERUN && QueueIntvl == 0) 2165 { 2166 pid_t pid = -1; 2167 2168 #if STARTTLS 2169 /* init TLS for client, ignore result for now */ 2170 (void) initclttls(tls_ok); 2171 #endif /* STARTTLS */ 2172 2173 /* 2174 ** The parent process of the caller of runqueue() needs 2175 ** to stay around for a possible SIGTERM. The SIGTERM will 2176 ** tell this process that all of the queue runners children 2177 ** need to be sent SIGTERM as well. At the same time, we 2178 ** want to return control to the command line. So we do an 2179 ** extra fork(). 2180 */ 2181 2182 if (Verbose || foregroundqueue || (pid = fork()) <= 0) 2183 { 2184 /* 2185 ** If the fork() failed we should still try to do 2186 ** the queue run. If it succeeded then the child 2187 ** is going to start the run and wait for all 2188 ** of the children to finish. 2189 */ 2190 2191 if (pid == 0) 2192 { 2193 /* Reset global flags */ 2194 RestartRequest = NULL; 2195 ShutdownRequest = NULL; 2196 PendingSignal = 0; 2197 2198 /* disconnect from terminal */ 2199 disconnect(2, CurEnv); 2200 } 2201 2202 CurrentPid = getpid(); 2203 if (qgrp != NOQGRP) 2204 { 2205 int rwgflags = RWG_NONE; 2206 2207 /* 2208 ** To run a specific queue group mark it to 2209 ** be run, select the work group it's in and 2210 ** increment the work counter. 2211 */ 2212 2213 for (i = 0; i < NumQueue && Queue[i] != NULL; 2214 i++) 2215 Queue[i]->qg_nextrun = (time_t) -1; 2216 Queue[qgrp]->qg_nextrun = 0; 2217 if (Verbose) 2218 rwgflags |= RWG_VERBOSE; 2219 if (queuepersistent) 2220 rwgflags |= RWG_PERSISTENT; 2221 rwgflags |= RWG_FORCE; 2222 (void) run_work_group(Queue[qgrp]->qg_wgrp, 2223 rwgflags); 2224 } 2225 else 2226 (void) runqueue(false, Verbose, 2227 queuepersistent, true); 2228 2229 /* set the title to make it easier to find */ 2230 sm_setproctitle(true, CurEnv, "Queue control"); 2231 (void) sm_signal(SIGCHLD, SIG_DFL); 2232 while (CurChildren > 0) 2233 { 2234 int status; 2235 pid_t ret; 2236 2237 while ((ret = sm_wait(&status)) <= 0) 2238 continue; 2239 2240 /* Only drop when a child gives status */ 2241 if (WIFSTOPPED(status)) 2242 continue; 2243 2244 proc_list_drop(ret, status, NULL); 2245 } 2246 } 2247 finis(true, true, ExitStat); 2248 /* NOTREACHED */ 2249 } 2250 2251 # if SASL 2252 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2253 { 2254 /* check whether AUTH is turned off for the server */ 2255 if (!chkdaemonmodifiers(D_NOAUTH) && 2256 (i = sasl_server_init(srvcallbacks, "Sendmail")) != SASL_OK) 2257 syserr("!sasl_server_init failed! [%s]", 2258 sasl_errstring(i, NULL, NULL)); 2259 } 2260 # endif /* SASL */ 2261 2262 if (OpMode == MD_SMTP) 2263 { 2264 proc_list_add(CurrentPid, "Sendmail SMTP Agent", 2265 PROC_DAEMON, 0, -1); 2266 2267 /* clean up background delivery children */ 2268 (void) sm_signal(SIGCHLD, reapchild); 2269 } 2270 2271 /* 2272 ** If a daemon, wait for a request. 2273 ** getrequests will always return in a child. 2274 ** If we should also be processing the queue, start 2275 ** doing it in background. 2276 ** We check for any errors that might have happened 2277 ** during startup. 2278 */ 2279 2280 if (OpMode == MD_DAEMON || QueueIntvl > 0) 2281 { 2282 char dtype[200]; 2283 2284 if (!run_in_foreground && !tTd(99, 100)) 2285 { 2286 /* put us in background */ 2287 i = fork(); 2288 if (i < 0) 2289 syserr("daemon: cannot fork"); 2290 if (i != 0) 2291 { 2292 finis(false, true, EX_OK); 2293 /* NOTREACHED */ 2294 } 2295 2296 /* 2297 ** Initialize exception stack and default exception 2298 ** handler for child process. 2299 */ 2300 2301 /* Reset global flags */ 2302 RestartRequest = NULL; 2303 RestartWorkGroup = false; 2304 ShutdownRequest = NULL; 2305 PendingSignal = 0; 2306 CurrentPid = getpid(); 2307 2308 sm_exc_newthread(fatal_error); 2309 2310 /* disconnect from our controlling tty */ 2311 disconnect(2, &MainEnvelope); 2312 } 2313 2314 dtype[0] = '\0'; 2315 if (OpMode == MD_DAEMON) 2316 { 2317 (void) sm_strlcat(dtype, "+SMTP", sizeof dtype); 2318 DaemonPid = CurrentPid; 2319 } 2320 if (QueueIntvl > 0) 2321 { 2322 (void) sm_strlcat2(dtype, 2323 queuepersistent 2324 ? "+persistent-queueing@" 2325 : "+queueing@", 2326 pintvl(QueueIntvl, true), 2327 sizeof dtype); 2328 } 2329 if (tTd(0, 1)) 2330 (void) sm_strlcat(dtype, "+debugging", sizeof dtype); 2331 2332 sm_syslog(LOG_INFO, NOQID, 2333 "starting daemon (%s): %s", Version, dtype + 1); 2334 #if XLA 2335 xla_create_file(); 2336 #endif /* XLA */ 2337 2338 /* save daemon type in a macro for possible PidFile use */ 2339 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2340 macid("{daemon_info}"), dtype + 1); 2341 2342 /* save queue interval in a macro for possible PidFile use */ 2343 macdefine(&MainEnvelope.e_macro, A_TEMP, 2344 macid("{queue_interval}"), pintvl(QueueIntvl, true)); 2345 2346 /* workaround: can't seem to release the signal in the parent */ 2347 (void) sm_signal(SIGHUP, sighup); 2348 (void) sm_releasesignal(SIGHUP); 2349 (void) sm_signal(SIGTERM, sigterm); 2350 2351 if (QueueIntvl > 0) 2352 { 2353 (void) runqueue(true, false, queuepersistent, true); 2354 2355 /* 2356 ** If queuepersistent but not in daemon mode then 2357 ** we're going to do the queue runner monitoring here. 2358 ** If in daemon mode then the monitoring will happen 2359 ** elsewhere. 2360 */ 2361 2362 if (OpMode != MD_DAEMON && queuepersistent) 2363 { 2364 /* set the title to make it easier to find */ 2365 sm_setproctitle(true, CurEnv, "Queue control"); 2366 (void) sm_signal(SIGCHLD, SIG_DFL); 2367 while (CurChildren > 0) 2368 { 2369 int status; 2370 pid_t ret; 2371 int group; 2372 2373 CHECK_RESTART; 2374 while ((ret = sm_wait(&status)) <= 0) 2375 continue; 2376 2377 if (WIFSTOPPED(status)) 2378 continue; 2379 2380 /* Probe only on a child status */ 2381 proc_list_drop(ret, status, &group); 2382 2383 if (WIFSIGNALED(status)) 2384 { 2385 if (WCOREDUMP(status)) 2386 { 2387 sm_syslog(LOG_ERR, NOQID, 2388 "persistent queue runner=%d core dumped, signal=%d", 2389 group, WTERMSIG(status)); 2390 2391 /* don't restart this */ 2392 mark_work_group_restart( 2393 group, -1); 2394 continue; 2395 } 2396 2397 sm_syslog(LOG_ERR, NOQID, 2398 "persistent queue runner=%d died, signal=%d", 2399 group, WTERMSIG(status)); 2400 } 2401 2402 /* 2403 ** When debugging active, don't 2404 ** restart the persistent queues. 2405 ** But do log this as info. 2406 */ 2407 2408 if (sm_debug_active(&DebugNoPRestart, 2409 1)) 2410 { 2411 sm_syslog(LOG_DEBUG, NOQID, 2412 "persistent queue runner=%d, exited", 2413 group); 2414 mark_work_group_restart(group, 2415 -1); 2416 } 2417 } 2418 finis(true, true, ExitStat); 2419 /* NOTREACHED */ 2420 } 2421 2422 if (OpMode != MD_DAEMON) 2423 { 2424 char qtype[200]; 2425 2426 /* 2427 ** Write the pid to file 2428 ** XXX Overwrites sendmail.pid 2429 */ 2430 2431 log_sendmail_pid(&MainEnvelope); 2432 2433 /* set the title to make it easier to find */ 2434 qtype[0] = '\0'; 2435 (void) sm_strlcpyn(qtype, sizeof qtype, 4, 2436 "Queue runner@", 2437 pintvl(QueueIntvl, true), 2438 " for ", 2439 QueueDir); 2440 sm_setproctitle(true, CurEnv, qtype); 2441 for (;;) 2442 { 2443 (void) pause(); 2444 CHECK_RESTART; 2445 if (doqueuerun()) 2446 (void) runqueue(true, false, 2447 false, false); 2448 } 2449 } 2450 } 2451 dropenvelope(&MainEnvelope, true, false); 2452 2453 #if STARTTLS 2454 /* init TLS for server, ignore result for now */ 2455 (void) initsrvtls(tls_ok); 2456 #endif /* STARTTLS */ 2457 2458 nextreq: 2459 p_flags = getrequests(&MainEnvelope); 2460 2461 /* drop privileges */ 2462 (void) drop_privileges(false); 2463 2464 /* 2465 ** Get authentication data 2466 ** Set _ macro in BlankEnvelope before calling newenvelope(). 2467 */ 2468 2469 authinfo = getauthinfo(sm_io_getinfo(InChannel, SM_IO_WHAT_FD, 2470 NULL), &forged); 2471 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 2472 2473 /* at this point we are in a child: reset state */ 2474 sm_rpool_free(MainEnvelope.e_rpool); 2475 (void) newenvelope(&MainEnvelope, &MainEnvelope, 2476 sm_rpool_new_x(NULL)); 2477 } 2478 2479 if (LogLevel > 9) 2480 { 2481 /* log connection information */ 2482 sm_syslog(LOG_INFO, NULL, "connect from %s", authinfo); 2483 } 2484 2485 /* 2486 ** If running SMTP protocol, start collecting and executing 2487 ** commands. This will never return. 2488 */ 2489 2490 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2491 { 2492 char pbuf[20]; 2493 2494 /* 2495 ** Save some macros for check_* rulesets. 2496 */ 2497 2498 if (forged) 2499 { 2500 char ipbuf[103]; 2501 2502 (void) sm_snprintf(ipbuf, sizeof ipbuf, "[%.100s]", 2503 anynet_ntoa(&RealHostAddr)); 2504 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2505 macid("{client_name}"), ipbuf); 2506 } 2507 else 2508 macdefine(&BlankEnvelope.e_macro, A_PERM, 2509 macid("{client_name}"), RealHostName); 2510 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2511 macid("{client_addr}"), anynet_ntoa(&RealHostAddr)); 2512 sm_getla(); 2513 2514 switch (RealHostAddr.sa.sa_family) 2515 { 2516 #if NETINET 2517 case AF_INET: 2518 (void) sm_snprintf(pbuf, sizeof pbuf, "%d", 2519 RealHostAddr.sin.sin_port); 2520 break; 2521 #endif /* NETINET */ 2522 #if NETINET6 2523 case AF_INET6: 2524 (void) sm_snprintf(pbuf, sizeof pbuf, "%d", 2525 RealHostAddr.sin6.sin6_port); 2526 break; 2527 #endif /* NETINET6 */ 2528 default: 2529 (void) sm_snprintf(pbuf, sizeof pbuf, "0"); 2530 break; 2531 } 2532 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2533 macid("{client_port}"), pbuf); 2534 2535 if (OpMode == MD_DAEMON) 2536 { 2537 /* validate the connection */ 2538 HoldErrs = true; 2539 nullserver = validate_connection(&RealHostAddr, 2540 RealHostName, 2541 &MainEnvelope); 2542 HoldErrs = false; 2543 } 2544 else if (p_flags == NULL) 2545 { 2546 p_flags = (BITMAP256 *) xalloc(sizeof *p_flags); 2547 clrbitmap(p_flags); 2548 } 2549 #if STARTTLS 2550 if (OpMode == MD_SMTP) 2551 (void) initsrvtls(tls_ok); 2552 #endif /* STARTTLS */ 2553 2554 /* turn off profiling */ 2555 SM_PROF(1); 2556 smtp(nullserver, *p_flags, &MainEnvelope); 2557 2558 if (tTd(93, 100)) 2559 { 2560 /* turn off profiling */ 2561 SM_PROF(0); 2562 if (OpMode == MD_DAEMON) 2563 goto nextreq; 2564 } 2565 } 2566 2567 sm_rpool_free(MainEnvelope.e_rpool); 2568 clearenvelope(&MainEnvelope, false, sm_rpool_new_x(NULL)); 2569 if (OpMode == MD_VERIFY) 2570 { 2571 set_delivery_mode(SM_VERIFY, &MainEnvelope); 2572 PostMasterCopy = NULL; 2573 } 2574 else 2575 { 2576 /* interactive -- all errors are global */ 2577 MainEnvelope.e_flags |= EF_GLOBALERRS|EF_LOGSENDER; 2578 } 2579 2580 /* 2581 ** Do basic system initialization and set the sender 2582 */ 2583 2584 initsys(&MainEnvelope); 2585 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{ntries}"), "0"); 2586 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{nrcpts}"), "0"); 2587 setsender(from, &MainEnvelope, NULL, '\0', false); 2588 if (warn_f_flag != '\0' && !wordinclass(RealUserName, 't') && 2589 (!bitnset(M_LOCALMAILER, MainEnvelope.e_from.q_mailer->m_flags) || 2590 strcmp(MainEnvelope.e_from.q_user, RealUserName) != 0)) 2591 { 2592 auth_warning(&MainEnvelope, "%s set sender to %s using -%c", 2593 RealUserName, from, warn_f_flag); 2594 #if SASL 2595 auth = false; 2596 #endif /* SASL */ 2597 } 2598 if (auth) 2599 { 2600 char *fv; 2601 2602 /* set the initial sender for AUTH= to $f@$j */ 2603 fv = macvalue('f', &MainEnvelope); 2604 if (fv == NULL || *fv == '\0') 2605 MainEnvelope.e_auth_param = NULL; 2606 else 2607 { 2608 if (strchr(fv, '@') == NULL) 2609 { 2610 i = strlen(fv) + strlen(macvalue('j', 2611 &MainEnvelope)) + 2; 2612 p = sm_malloc_x(i); 2613 (void) sm_strlcpyn(p, i, 3, fv, "@", 2614 macvalue('j', 2615 &MainEnvelope)); 2616 } 2617 else 2618 p = sm_strdup_x(fv); 2619 MainEnvelope.e_auth_param = sm_rpool_strdup_x(MainEnvelope.e_rpool, 2620 xtextify(p, "=")); 2621 sm_free(p); /* XXX */ 2622 } 2623 } 2624 if (macvalue('s', &MainEnvelope) == NULL) 2625 macdefine(&MainEnvelope.e_macro, A_PERM, 's', RealHostName); 2626 2627 av = argv + optind; 2628 if (*av == NULL && !GrabTo) 2629 { 2630 MainEnvelope.e_to = NULL; 2631 MainEnvelope.e_flags |= EF_GLOBALERRS; 2632 HoldErrs = false; 2633 SuperSafe = SAFE_NO; 2634 usrerr("Recipient names must be specified"); 2635 2636 /* collect body for UUCP return */ 2637 if (OpMode != MD_VERIFY) 2638 collect(InChannel, false, NULL, &MainEnvelope, true); 2639 finis(true, true, EX_USAGE); 2640 /* NOTREACHED */ 2641 } 2642 2643 /* 2644 ** Scan argv and deliver the message to everyone. 2645 */ 2646 2647 save_val = LogUsrErrs; 2648 LogUsrErrs = true; 2649 sendtoargv(av, &MainEnvelope); 2650 LogUsrErrs = save_val; 2651 2652 /* if we have had errors sofar, arrange a meaningful exit stat */ 2653 if (Errors > 0 && ExitStat == EX_OK) 2654 ExitStat = EX_USAGE; 2655 2656 #if _FFR_FIX_DASHT 2657 /* 2658 ** If using -t, force not sending to argv recipients, even 2659 ** if they are mentioned in the headers. 2660 */ 2661 2662 if (GrabTo) 2663 { 2664 ADDRESS *q; 2665 2666 for (q = MainEnvelope.e_sendqueue; q != NULL; q = q->q_next) 2667 q->q_state = QS_REMOVED; 2668 } 2669 #endif /* _FFR_FIX_DASHT */ 2670 2671 /* 2672 ** Read the input mail. 2673 */ 2674 2675 MainEnvelope.e_to = NULL; 2676 if (OpMode != MD_VERIFY || GrabTo) 2677 { 2678 int savederrors; 2679 unsigned long savedflags; 2680 2681 /* 2682 ** workaround for compiler warning on Irix: 2683 ** do not initialize variable in the definition, but 2684 ** later on: 2685 ** warning(1548): transfer of control bypasses 2686 ** initialization of: 2687 ** variable "savederrors" (declared at line 2570) 2688 ** variable "savedflags" (declared at line 2571) 2689 ** goto giveup; 2690 */ 2691 2692 savederrors = Errors; 2693 savedflags = MainEnvelope.e_flags & EF_FATALERRS; 2694 MainEnvelope.e_flags |= EF_GLOBALERRS; 2695 MainEnvelope.e_flags &= ~EF_FATALERRS; 2696 Errors = 0; 2697 buffer_errors(); 2698 collect(InChannel, false, NULL, &MainEnvelope, true); 2699 2700 /* header checks failed */ 2701 if (Errors > 0) 2702 { 2703 giveup: 2704 if (!GrabTo) 2705 { 2706 /* Log who the mail would have gone to */ 2707 logundelrcpts(&MainEnvelope, 2708 MainEnvelope.e_message, 2709 8, false); 2710 } 2711 flush_errors(true); 2712 finis(true, true, ExitStat); 2713 /* NOTREACHED */ 2714 return -1; 2715 } 2716 2717 /* bail out if message too large */ 2718 if (bitset(EF_CLRQUEUE, MainEnvelope.e_flags)) 2719 { 2720 finis(true, true, ExitStat != EX_OK ? ExitStat 2721 : EX_DATAERR); 2722 /* NOTREACHED */ 2723 return -1; 2724 } 2725 2726 /* set message size */ 2727 (void) sm_snprintf(buf, sizeof buf, "%ld", 2728 MainEnvelope.e_msgsize); 2729 macdefine(&MainEnvelope.e_macro, A_TEMP, 2730 macid("{msg_size}"), buf); 2731 2732 Errors = savederrors; 2733 MainEnvelope.e_flags |= savedflags; 2734 } 2735 errno = 0; 2736 2737 if (tTd(1, 1)) 2738 sm_dprintf("From person = \"%s\"\n", 2739 MainEnvelope.e_from.q_paddr); 2740 2741 #if _FFR_QUARANTINE 2742 /* Check if quarantining stats should be updated */ 2743 if (MainEnvelope.e_quarmsg != NULL) 2744 markstats(&MainEnvelope, NULL, STATS_QUARANTINE); 2745 #endif /* _FFR_QUARANTINE */ 2746 2747 /* 2748 ** Actually send everything. 2749 ** If verifying, just ack. 2750 */ 2751 2752 if (Errors == 0) 2753 { 2754 if (!split_by_recipient(&MainEnvelope) && 2755 bitset(EF_FATALERRS, MainEnvelope.e_flags)) 2756 goto giveup; 2757 } 2758 2759 /* make sure we deliver at least the first envelope */ 2760 i = FastSplit > 0 ? 0 : -1; 2761 for (e = &MainEnvelope; e != NULL; e = e->e_sibling, i++) 2762 { 2763 ENVELOPE *next; 2764 2765 e->e_from.q_state = QS_SENDER; 2766 if (tTd(1, 5)) 2767 { 2768 sm_dprintf("main[%d]: QS_SENDER ", i); 2769 printaddr(&e->e_from, false); 2770 } 2771 e->e_to = NULL; 2772 sm_getla(); 2773 GrabTo = false; 2774 #if NAMED_BIND 2775 _res.retry = TimeOuts.res_retry[RES_TO_FIRST]; 2776 _res.retrans = TimeOuts.res_retrans[RES_TO_FIRST]; 2777 #endif /* NAMED_BIND */ 2778 next = e->e_sibling; 2779 e->e_sibling = NULL; 2780 2781 /* after FastSplit envelopes: queue up */ 2782 sendall(e, i >= FastSplit ? SM_QUEUE : SM_DEFAULT); 2783 e->e_sibling = next; 2784 } 2785 2786 /* 2787 ** All done. 2788 ** Don't send return error message if in VERIFY mode. 2789 */ 2790 2791 finis(true, true, ExitStat); 2792 /* NOTREACHED */ 2793 return ExitStat; 2794 } 2795 /* 2796 ** STOP_SENDMAIL -- Stop the running program 2797 ** 2798 ** Parameters: 2799 ** none. 2800 ** 2801 ** Returns: 2802 ** none. 2803 ** 2804 ** Side Effects: 2805 ** exits. 2806 */ 2807 2808 void 2809 stop_sendmail() 2810 { 2811 /* reset uid for process accounting */ 2812 endpwent(); 2813 (void) setuid(RealUid); 2814 exit(EX_OK); 2815 } 2816 /* 2817 ** FINIS -- Clean up and exit. 2818 ** 2819 ** Parameters: 2820 ** drop -- whether or not to drop CurEnv envelope 2821 ** cleanup -- call exit() or _exit()? 2822 ** exitstat -- exit status to use for exit() call 2823 ** 2824 ** Returns: 2825 ** never 2826 ** 2827 ** Side Effects: 2828 ** exits sendmail 2829 */ 2830 2831 void 2832 finis(drop, cleanup, exitstat) 2833 bool drop; 2834 bool cleanup; 2835 volatile int exitstat; 2836 { 2837 2838 /* Still want to process new timeouts added below */ 2839 sm_clear_events(); 2840 (void) sm_releasesignal(SIGALRM); 2841 2842 if (tTd(2, 1)) 2843 { 2844 sm_dprintf("\n====finis: stat %d e_id=%s e_flags=", 2845 exitstat, 2846 CurEnv->e_id == NULL ? "NOQUEUE" : CurEnv->e_id); 2847 printenvflags(CurEnv); 2848 } 2849 if (tTd(2, 9)) 2850 printopenfds(false); 2851 2852 SM_TRY 2853 /* 2854 ** Clean up. This might raise E:mta.quickabort 2855 */ 2856 2857 /* clean up temp files */ 2858 CurEnv->e_to = NULL; 2859 if (drop) 2860 { 2861 if (CurEnv->e_id != NULL) 2862 { 2863 dropenvelope(CurEnv, true, false); 2864 sm_rpool_free(CurEnv->e_rpool); 2865 CurEnv->e_rpool = NULL; 2866 } 2867 else 2868 poststats(StatFile); 2869 } 2870 2871 /* flush any cached connections */ 2872 mci_flush(true, NULL); 2873 2874 /* close maps belonging to this pid */ 2875 closemaps(false); 2876 2877 #if USERDB 2878 /* close UserDatabase */ 2879 _udbx_close(); 2880 #endif /* USERDB */ 2881 2882 #if SASL 2883 stop_sasl_client(); 2884 #endif /* SASL */ 2885 2886 #if XLA 2887 /* clean up extended load average stuff */ 2888 xla_all_end(); 2889 #endif /* XLA */ 2890 2891 SM_FINALLY 2892 /* 2893 ** And exit. 2894 */ 2895 2896 if (LogLevel > 78) 2897 sm_syslog(LOG_DEBUG, CurEnv->e_id, "finis, pid=%d", 2898 (int) CurrentPid); 2899 if (exitstat == EX_TEMPFAIL || 2900 CurEnv->e_errormode == EM_BERKNET) 2901 exitstat = EX_OK; 2902 2903 /* XXX clean up queues and related data structures */ 2904 cleanup_queues(); 2905 #if SM_CONF_SHM 2906 cleanup_shm(DaemonPid == getpid()); 2907 #endif /* SM_CONF_SHM */ 2908 2909 /* reset uid for process accounting */ 2910 endpwent(); 2911 sm_mbdb_terminate(); 2912 (void) setuid(RealUid); 2913 #if SM_HEAP_CHECK 2914 /* dump the heap, if we are checking for memory leaks */ 2915 if (sm_debug_active(&SmHeapCheck, 2)) 2916 sm_heap_report(smioout, 2917 sm_debug_level(&SmHeapCheck) - 1); 2918 #endif /* SM_HEAP_CHECK */ 2919 if (sm_debug_active(&SmXtrapReport, 1)) 2920 sm_dprintf("xtrap count = %d\n", SmXtrapCount); 2921 if (cleanup) 2922 exit(exitstat); 2923 else 2924 _exit(exitstat); 2925 SM_END_TRY 2926 } 2927 /* 2928 ** INTINDEBUG -- signal handler for SIGINT in -bt mode 2929 ** 2930 ** Parameters: 2931 ** sig -- incoming signal. 2932 ** 2933 ** Returns: 2934 ** none. 2935 ** 2936 ** Side Effects: 2937 ** longjmps back to test mode loop. 2938 ** 2939 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 2940 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 2941 ** DOING. 2942 */ 2943 2944 /* Type of an exception generated on SIGINT during address test mode. */ 2945 static const SM_EXC_TYPE_T EtypeInterrupt = 2946 { 2947 SmExcTypeMagic, 2948 "S:mta.interrupt", 2949 "", 2950 sm_etype_printf, 2951 "interrupt", 2952 }; 2953 2954 /* ARGSUSED */ 2955 static SIGFUNC_DECL 2956 intindebug(sig) 2957 int sig; 2958 { 2959 int save_errno = errno; 2960 2961 FIX_SYSV_SIGNAL(sig, intindebug); 2962 errno = save_errno; 2963 CHECK_CRITICAL(sig); 2964 errno = save_errno; 2965 sm_exc_raisenew_x(&EtypeInterrupt); 2966 errno = save_errno; 2967 return SIGFUNC_RETURN; 2968 } 2969 /* 2970 ** SIGTERM -- SIGTERM handler for the daemon 2971 ** 2972 ** Parameters: 2973 ** sig -- signal number. 2974 ** 2975 ** Returns: 2976 ** none. 2977 ** 2978 ** Side Effects: 2979 ** Sets ShutdownRequest which will hopefully trigger 2980 ** the daemon to exit. 2981 ** 2982 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 2983 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 2984 ** DOING. 2985 */ 2986 2987 /* ARGSUSED */ 2988 static SIGFUNC_DECL 2989 sigterm(sig) 2990 int sig; 2991 { 2992 int save_errno = errno; 2993 2994 FIX_SYSV_SIGNAL(sig, sigterm); 2995 ShutdownRequest = "signal"; 2996 errno = save_errno; 2997 return SIGFUNC_RETURN; 2998 } 2999 /* 3000 ** SIGHUP -- handle a SIGHUP signal 3001 ** 3002 ** Parameters: 3003 ** sig -- incoming signal. 3004 ** 3005 ** Returns: 3006 ** none. 3007 ** 3008 ** Side Effects: 3009 ** Sets RestartRequest which should cause the daemon 3010 ** to restart. 3011 ** 3012 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3013 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3014 ** DOING. 3015 */ 3016 3017 /* ARGSUSED */ 3018 static SIGFUNC_DECL 3019 sighup(sig) 3020 int sig; 3021 { 3022 int save_errno = errno; 3023 3024 FIX_SYSV_SIGNAL(sig, sighup); 3025 RestartRequest = "signal"; 3026 errno = save_errno; 3027 return SIGFUNC_RETURN; 3028 } 3029 /* 3030 ** SIGPIPE -- signal handler for SIGPIPE 3031 ** 3032 ** Parameters: 3033 ** sig -- incoming signal. 3034 ** 3035 ** Returns: 3036 ** none. 3037 ** 3038 ** Side Effects: 3039 ** Sets StopRequest which should cause the mailq/hoststatus 3040 ** display to stop. 3041 ** 3042 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3043 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3044 ** DOING. 3045 */ 3046 3047 /* ARGSUSED */ 3048 static SIGFUNC_DECL 3049 sigpipe(sig) 3050 int sig; 3051 { 3052 int save_errno = errno; 3053 3054 FIX_SYSV_SIGNAL(sig, sigpipe); 3055 StopRequest = true; 3056 errno = save_errno; 3057 return SIGFUNC_RETURN; 3058 } 3059 /* 3060 ** INTSIG -- clean up on interrupt 3061 ** 3062 ** This just arranges to exit. It pessimizes in that it 3063 ** may resend a message. 3064 ** 3065 ** Parameters: 3066 ** none. 3067 ** 3068 ** Returns: 3069 ** none. 3070 ** 3071 ** Side Effects: 3072 ** Unlocks the current job. 3073 ** 3074 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3075 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3076 ** DOING. 3077 ** 3078 ** XXX: More work is needed for this signal handler. 3079 */ 3080 3081 /* ARGSUSED */ 3082 SIGFUNC_DECL 3083 intsig(sig) 3084 int sig; 3085 { 3086 bool drop = false; 3087 int save_errno = errno; 3088 3089 FIX_SYSV_SIGNAL(sig, intsig); 3090 errno = save_errno; 3091 CHECK_CRITICAL(sig); 3092 sm_allsignals(true); 3093 3094 if (sig != 0 && LogLevel > 79) 3095 sm_syslog(LOG_DEBUG, CurEnv->e_id, "interrupt"); 3096 FileName = NULL; 3097 3098 /* Clean-up on aborted stdin message submission */ 3099 if (CurEnv->e_id != NULL && 3100 (OpMode == MD_SMTP || 3101 OpMode == MD_DELIVER || 3102 OpMode == MD_ARPAFTP)) 3103 { 3104 register ADDRESS *q; 3105 3106 /* don't return an error indication */ 3107 CurEnv->e_to = NULL; 3108 CurEnv->e_flags &= ~EF_FATALERRS; 3109 CurEnv->e_flags |= EF_CLRQUEUE; 3110 3111 /* 3112 ** Spin through the addresses and 3113 ** mark them dead to prevent bounces 3114 */ 3115 3116 for (q = CurEnv->e_sendqueue; q != NULL; q = q->q_next) 3117 q->q_state = QS_DONTSEND; 3118 3119 drop = true; 3120 } 3121 else if (OpMode != MD_TEST) 3122 { 3123 unlockqueue(CurEnv); 3124 } 3125 3126 finis(drop, false, EX_OK); 3127 /* NOTREACHED */ 3128 } 3129 /* 3130 ** DISCONNECT -- remove our connection with any foreground process 3131 ** 3132 ** Parameters: 3133 ** droplev -- how "deeply" we should drop the line. 3134 ** 0 -- ignore signals, mail back errors, make sure 3135 ** output goes to stdout. 3136 ** 1 -- also, make stdout go to /dev/null. 3137 ** 2 -- also, disconnect from controlling terminal 3138 ** (only for daemon mode). 3139 ** e -- the current envelope. 3140 ** 3141 ** Returns: 3142 ** none 3143 ** 3144 ** Side Effects: 3145 ** Trys to insure that we are immune to vagaries of 3146 ** the controlling tty. 3147 */ 3148 3149 void 3150 disconnect(droplev, e) 3151 int droplev; 3152 register ENVELOPE *e; 3153 { 3154 int fd; 3155 3156 if (tTd(52, 1)) 3157 sm_dprintf("disconnect: In %d Out %d, e=%p\n", 3158 sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL), 3159 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL), e); 3160 if (tTd(52, 100)) 3161 { 3162 sm_dprintf("don't\n"); 3163 return; 3164 } 3165 if (LogLevel > 93) 3166 sm_syslog(LOG_DEBUG, e->e_id, 3167 "disconnect level %d", 3168 droplev); 3169 3170 /* be sure we don't get nasty signals */ 3171 (void) sm_signal(SIGINT, SIG_IGN); 3172 (void) sm_signal(SIGQUIT, SIG_IGN); 3173 3174 /* we can't communicate with our caller, so.... */ 3175 HoldErrs = true; 3176 CurEnv->e_errormode = EM_MAIL; 3177 Verbose = 0; 3178 DisConnected = true; 3179 3180 /* all input from /dev/null */ 3181 if (InChannel != smioin) 3182 { 3183 (void) sm_io_close(InChannel, SM_TIME_DEFAULT); 3184 InChannel = smioin; 3185 } 3186 if (sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3187 SM_IO_RDONLY, NULL, smioin) == NULL) 3188 sm_syslog(LOG_ERR, e->e_id, 3189 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3190 SM_PATH_DEVNULL, sm_errstring(errno)); 3191 3192 /* 3193 ** output to the transcript 3194 ** We also compare the fd numbers here since OutChannel 3195 ** might be a layer on top of smioout due to encryption 3196 ** (see sfsasl.c). 3197 */ 3198 3199 if (OutChannel != smioout && 3200 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL) != 3201 sm_io_getinfo(smioout, SM_IO_WHAT_FD, NULL)) 3202 { 3203 (void) sm_io_close(OutChannel, SM_TIME_DEFAULT); 3204 OutChannel = smioout; 3205 3206 #if 0 3207 /* 3208 ** Has smioout been closed? Reopen it. 3209 ** This shouldn't happen anymore, the code is here 3210 ** just as a reminder. 3211 */ 3212 3213 if (smioout->sm_magic == NULL && 3214 sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3215 SM_IO_WRONLY, NULL, smioout) == NULL) 3216 sm_syslog(LOG_ERR, e->e_id, 3217 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3218 SM_PATH_DEVNULL, sm_errstring(errno)); 3219 #endif /* 0 */ 3220 } 3221 if (droplev > 0) 3222 { 3223 fd = open(SM_PATH_DEVNULL, O_WRONLY, 0666); 3224 if (fd == -1) 3225 sm_syslog(LOG_ERR, e->e_id, 3226 "disconnect: open(\"%s\") failed: %s", 3227 SM_PATH_DEVNULL, sm_errstring(errno)); 3228 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 3229 (void) dup2(fd, STDOUT_FILENO); 3230 (void) dup2(fd, STDERR_FILENO); 3231 (void) close(fd); 3232 } 3233 3234 /* drop our controlling TTY completely if possible */ 3235 if (droplev > 1) 3236 { 3237 (void) setsid(); 3238 errno = 0; 3239 } 3240 3241 #if XDEBUG 3242 checkfd012("disconnect"); 3243 #endif /* XDEBUG */ 3244 3245 if (LogLevel > 71) 3246 sm_syslog(LOG_DEBUG, e->e_id, "in background, pid=%d", 3247 (int) CurrentPid); 3248 3249 errno = 0; 3250 } 3251 3252 static void 3253 obsolete(argv) 3254 char *argv[]; 3255 { 3256 register char *ap; 3257 register char *op; 3258 3259 while ((ap = *++argv) != NULL) 3260 { 3261 /* Return if "--" or not an option of any form. */ 3262 if (ap[0] != '-' || ap[1] == '-') 3263 return; 3264 3265 #if _FFR_QUARANTINE 3266 /* Don't allow users to use "-Q." or "-Q ." */ 3267 if ((ap[1] == 'Q' && ap[2] == '.') || 3268 (ap[1] == 'Q' && argv[1] != NULL && 3269 argv[1][0] == '.' && argv[1][1] == '\0')) 3270 { 3271 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3272 "Can not use -Q.\n"); 3273 exit(EX_USAGE); 3274 } 3275 #endif /* _FFR_QUARANTINE */ 3276 3277 /* skip over options that do have a value */ 3278 op = strchr(OPTIONS, ap[1]); 3279 if (op != NULL && *++op == ':' && ap[2] == '\0' && 3280 ap[1] != 'd' && 3281 #if defined(sony_news) 3282 ap[1] != 'E' && ap[1] != 'J' && 3283 #endif /* defined(sony_news) */ 3284 argv[1] != NULL && argv[1][0] != '-') 3285 { 3286 argv++; 3287 continue; 3288 } 3289 3290 /* If -C doesn't have an argument, use sendmail.cf. */ 3291 #define __DEFPATH "sendmail.cf" 3292 if (ap[1] == 'C' && ap[2] == '\0') 3293 { 3294 *argv = xalloc(sizeof(__DEFPATH) + 2); 3295 (void) sm_strlcpyn(argv[0], sizeof(__DEFPATH) + 2, 2, 3296 "-C", __DEFPATH); 3297 } 3298 3299 /* If -q doesn't have an argument, run it once. */ 3300 if (ap[1] == 'q' && ap[2] == '\0') 3301 *argv = "-q0"; 3302 3303 #if _FFR_QUARANTINE 3304 /* If -Q doesn't have an argument, disable quarantining */ 3305 if (ap[1] == 'Q' && ap[2] == '\0') 3306 *argv = "-Q."; 3307 #endif /* _FFR_QUARANTINE */ 3308 3309 /* if -d doesn't have an argument, use 0-99.1 */ 3310 if (ap[1] == 'd' && ap[2] == '\0') 3311 *argv = "-d0-99.1"; 3312 3313 #if defined(sony_news) 3314 /* if -E doesn't have an argument, use -EC */ 3315 if (ap[1] == 'E' && ap[2] == '\0') 3316 *argv = "-EC"; 3317 3318 /* if -J doesn't have an argument, use -JJ */ 3319 if (ap[1] == 'J' && ap[2] == '\0') 3320 *argv = "-JJ"; 3321 #endif /* defined(sony_news) */ 3322 } 3323 } 3324 /* 3325 ** AUTH_WARNING -- specify authorization warning 3326 ** 3327 ** Parameters: 3328 ** e -- the current envelope. 3329 ** msg -- the text of the message. 3330 ** args -- arguments to the message. 3331 ** 3332 ** Returns: 3333 ** none. 3334 */ 3335 3336 void 3337 #ifdef __STDC__ 3338 auth_warning(register ENVELOPE *e, const char *msg, ...) 3339 #else /* __STDC__ */ 3340 auth_warning(e, msg, va_alist) 3341 register ENVELOPE *e; 3342 const char *msg; 3343 va_dcl 3344 #endif /* __STDC__ */ 3345 { 3346 char buf[MAXLINE]; 3347 SM_VA_LOCAL_DECL 3348 3349 if (bitset(PRIV_AUTHWARNINGS, PrivacyFlags)) 3350 { 3351 register char *p; 3352 static char hostbuf[48]; 3353 3354 if (hostbuf[0] == '\0') 3355 { 3356 struct hostent *hp; 3357 3358 hp = myhostname(hostbuf, sizeof hostbuf); 3359 #if NETINET6 3360 if (hp != NULL) 3361 { 3362 freehostent(hp); 3363 hp = NULL; 3364 } 3365 #endif /* NETINET6 */ 3366 } 3367 3368 (void) sm_strlcpyn(buf, sizeof buf, 2, hostbuf, ": "); 3369 p = &buf[strlen(buf)]; 3370 SM_VA_START(ap, msg); 3371 (void) sm_vsnprintf(p, SPACELEFT(buf, p), msg, ap); 3372 SM_VA_END(ap); 3373 addheader("X-Authentication-Warning", buf, 0, e); 3374 if (LogLevel > 3) 3375 sm_syslog(LOG_INFO, e->e_id, 3376 "Authentication-Warning: %.400s", 3377 buf); 3378 } 3379 } 3380 /* 3381 ** GETEXTENV -- get from external environment 3382 ** 3383 ** Parameters: 3384 ** envar -- the name of the variable to retrieve 3385 ** 3386 ** Returns: 3387 ** The value, if any. 3388 */ 3389 3390 static char * 3391 getextenv(envar) 3392 const char *envar; 3393 { 3394 char **envp; 3395 int l; 3396 3397 l = strlen(envar); 3398 for (envp = ExternalEnviron; envp != NULL && *envp != NULL; envp++) 3399 { 3400 if (strncmp(*envp, envar, l) == 0 && (*envp)[l] == '=') 3401 return &(*envp)[l + 1]; 3402 } 3403 return NULL; 3404 } 3405 /* 3406 ** SETUSERENV -- set an environment in the propagated environment 3407 ** 3408 ** Parameters: 3409 ** envar -- the name of the environment variable. 3410 ** value -- the value to which it should be set. If 3411 ** null, this is extracted from the incoming 3412 ** environment. If that is not set, the call 3413 ** to setuserenv is ignored. 3414 ** 3415 ** Returns: 3416 ** none. 3417 */ 3418 3419 void 3420 setuserenv(envar, value) 3421 const char *envar; 3422 const char *value; 3423 { 3424 int i, l; 3425 char **evp = UserEnviron; 3426 char *p; 3427 3428 if (value == NULL) 3429 { 3430 value = getextenv(envar); 3431 if (value == NULL) 3432 return; 3433 } 3434 3435 /* XXX enforce reasonable size? */ 3436 i = strlen(envar) + 1; 3437 l = strlen(value) + i + 1; 3438 p = (char *) xalloc(l); 3439 (void) sm_strlcpyn(p, l, 3, envar, "=", value); 3440 3441 while (*evp != NULL && strncmp(*evp, p, i) != 0) 3442 evp++; 3443 if (*evp != NULL) 3444 { 3445 *evp++ = p; 3446 } 3447 else if (evp < &UserEnviron[MAXUSERENVIRON]) 3448 { 3449 *evp++ = p; 3450 *evp = NULL; 3451 } 3452 3453 /* make sure it is in our environment as well */ 3454 if (putenv(p) < 0) 3455 syserr("setuserenv: putenv(%s) failed", p); 3456 } 3457 /* 3458 ** DUMPSTATE -- dump state 3459 ** 3460 ** For debugging. 3461 */ 3462 3463 void 3464 dumpstate(when) 3465 char *when; 3466 { 3467 register char *j = macvalue('j', CurEnv); 3468 int rs; 3469 extern int NextMacroId; 3470 3471 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3472 "--- dumping state on %s: $j = %s ---", 3473 when, 3474 j == NULL ? "<NULL>" : j); 3475 if (j != NULL) 3476 { 3477 if (!wordinclass(j, 'w')) 3478 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3479 "*** $j not in $=w ***"); 3480 } 3481 sm_syslog(LOG_DEBUG, CurEnv->e_id, "CurChildren = %d", CurChildren); 3482 sm_syslog(LOG_DEBUG, CurEnv->e_id, "NextMacroId = %d (Max %d)", 3483 NextMacroId, MAXMACROID); 3484 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- open file descriptors: ---"); 3485 printopenfds(true); 3486 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- connection cache: ---"); 3487 mci_dump_all(true); 3488 rs = strtorwset("debug_dumpstate", NULL, ST_FIND); 3489 if (rs > 0) 3490 { 3491 int status; 3492 register char **pvp; 3493 char *pv[MAXATOM + 1]; 3494 3495 pv[0] = NULL; 3496 status = REWRITE(pv, rs, CurEnv); 3497 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3498 "--- ruleset debug_dumpstate returns stat %d, pv: ---", 3499 status); 3500 for (pvp = pv; *pvp != NULL; pvp++) 3501 sm_syslog(LOG_DEBUG, CurEnv->e_id, "%s", *pvp); 3502 } 3503 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- end of state dump ---"); 3504 } 3505 3506 #ifdef SIGUSR1 3507 /* 3508 ** SIGUSR1 -- Signal a request to dump state. 3509 ** 3510 ** Parameters: 3511 ** sig -- calling signal. 3512 ** 3513 ** Returns: 3514 ** none. 3515 ** 3516 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3517 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3518 ** DOING. 3519 ** 3520 ** XXX: More work is needed for this signal handler. 3521 */ 3522 3523 /* ARGSUSED */ 3524 static SIGFUNC_DECL 3525 sigusr1(sig) 3526 int sig; 3527 { 3528 int save_errno = errno; 3529 # if SM_HEAP_CHECK 3530 extern void dumpstab __P((void)); 3531 # endif /* SM_HEAP_CHECK */ 3532 3533 FIX_SYSV_SIGNAL(sig, sigusr1); 3534 errno = save_errno; 3535 CHECK_CRITICAL(sig); 3536 dumpstate("user signal"); 3537 # if SM_HEAP_CHECK 3538 dumpstab(); 3539 # endif /* SM_HEAP_CHECK */ 3540 errno = save_errno; 3541 return SIGFUNC_RETURN; 3542 } 3543 #endif /* SIGUSR1 */ 3544 3545 /* 3546 ** DROP_PRIVILEGES -- reduce privileges to those of the RunAsUser option 3547 ** 3548 ** Parameters: 3549 ** to_real_uid -- if set, drop to the real uid instead 3550 ** of the RunAsUser. 3551 ** 3552 ** Returns: 3553 ** EX_OSERR if the setuid failed. 3554 ** EX_OK otherwise. 3555 */ 3556 3557 int 3558 drop_privileges(to_real_uid) 3559 bool to_real_uid; 3560 { 3561 int rval = EX_OK; 3562 GIDSET_T emptygidset[1]; 3563 3564 if (tTd(47, 1)) 3565 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", 3566 (int) to_real_uid, 3567 (int) RealUid, (int) RealGid, 3568 (int) getuid(), (int) getgid(), 3569 (int) geteuid(), (int) getegid(), 3570 (int) RunAsUid, (int) RunAsGid); 3571 3572 if (to_real_uid) 3573 { 3574 RunAsUserName = RealUserName; 3575 RunAsUid = RealUid; 3576 RunAsGid = RealGid; 3577 EffGid = RunAsGid; 3578 } 3579 3580 /* make sure no one can grab open descriptors for secret files */ 3581 endpwent(); 3582 sm_mbdb_terminate(); 3583 3584 /* reset group permissions; these can be set later */ 3585 emptygidset[0] = (to_real_uid || RunAsGid != 0) ? RunAsGid : getegid(); 3586 3587 /* 3588 ** Notice: on some OS (Linux...) the setgroups() call causes 3589 ** a logfile entry if sendmail is not run by root. 3590 ** However, it is unclear (no POSIX standard) whether 3591 ** setgroups() can only succeed if executed by root. 3592 ** So for now we keep it as it is; if you want to change it, use 3593 ** if (geteuid() == 0 && setgroups(1, emptygidset) == -1) 3594 */ 3595 3596 if (setgroups(1, emptygidset) == -1 && geteuid() == 0) 3597 { 3598 syserr("drop_privileges: setgroups(1, %d) failed", 3599 (int) emptygidset[0]); 3600 rval = EX_OSERR; 3601 } 3602 3603 /* reset primary group id */ 3604 if (to_real_uid) 3605 { 3606 /* 3607 ** Drop gid to real gid. 3608 ** On some OS we must reset the effective[/real[/saved]] gid, 3609 ** and then use setgid() to finally drop all group privileges. 3610 ** Later on we check whether we can get back the 3611 ** effective gid. 3612 */ 3613 3614 #if HASSETEGID 3615 if (setegid(RunAsGid) < 0) 3616 { 3617 syserr("drop_privileges: setegid(%d) failed", 3618 (int) RunAsGid); 3619 rval = EX_OSERR; 3620 } 3621 #else /* HASSETEGID */ 3622 # if HASSETREGID 3623 if (setregid(RunAsGid, RunAsGid) < 0) 3624 { 3625 syserr("drop_privileges: setregid(%d, %d) failed", 3626 (int) RunAsGid, (int) RunAsGid); 3627 rval = EX_OSERR; 3628 } 3629 # else /* HASSETREGID */ 3630 # if HASSETRESGID 3631 if (setresgid(RunAsGid, RunAsGid, RunAsGid) < 0) 3632 { 3633 syserr("drop_privileges: setresgid(%d, %d, %d) failed", 3634 (int) RunAsGid, (int) RunAsGid, (int) RunAsGid); 3635 rval = EX_OSERR; 3636 } 3637 # endif /* HASSETRESGID */ 3638 # endif /* HASSETREGID */ 3639 #endif /* HASSETEGID */ 3640 } 3641 if (rval == EX_OK && (to_real_uid || RunAsGid != 0)) 3642 { 3643 if (setgid(RunAsGid) < 0 && (!UseMSP || getegid() != RunAsGid)) 3644 { 3645 syserr("drop_privileges: setgid(%d) failed", 3646 (int) RunAsGid); 3647 rval = EX_OSERR; 3648 } 3649 errno = 0; 3650 if (rval == EX_OK && getegid() != RunAsGid) 3651 { 3652 syserr("drop_privileges: Unable to set effective gid=%d to RunAsGid=%d", 3653 (int) getegid(), (int) RunAsGid); 3654 rval = EX_OSERR; 3655 } 3656 } 3657 3658 /* fiddle with uid */ 3659 if (to_real_uid || RunAsUid != 0) 3660 { 3661 uid_t euid; 3662 3663 /* 3664 ** Try to setuid(RunAsUid). 3665 ** euid must be RunAsUid, 3666 ** ruid must be RunAsUid unless (e|r)uid wasn't 0 3667 ** and we didn't have to drop privileges to the real uid. 3668 */ 3669 3670 if (setuid(RunAsUid) < 0 || 3671 geteuid() != RunAsUid || 3672 (getuid() != RunAsUid && 3673 (to_real_uid || geteuid() == 0 || getuid() == 0))) 3674 { 3675 #if HASSETREUID 3676 /* 3677 ** if ruid != RunAsUid, euid == RunAsUid, then 3678 ** try resetting just the real uid, then using 3679 ** setuid() to drop the saved-uid as well. 3680 */ 3681 3682 if (geteuid() == RunAsUid) 3683 { 3684 if (setreuid(RunAsUid, -1) < 0) 3685 { 3686 syserr("drop_privileges: setreuid(%d, -1) failed", 3687 (int) RunAsUid); 3688 rval = EX_OSERR; 3689 } 3690 if (setuid(RunAsUid) < 0) 3691 { 3692 syserr("drop_privileges: second setuid(%d) attempt failed", 3693 (int) RunAsUid); 3694 rval = EX_OSERR; 3695 } 3696 } 3697 else 3698 #endif /* HASSETREUID */ 3699 { 3700 syserr("drop_privileges: setuid(%d) failed", 3701 (int) RunAsUid); 3702 rval = EX_OSERR; 3703 } 3704 } 3705 euid = geteuid(); 3706 if (RunAsUid != 0 && setuid(0) == 0) 3707 { 3708 /* 3709 ** Believe it or not, the Linux capability model 3710 ** allows a non-root process to override setuid() 3711 ** on a process running as root and prevent that 3712 ** process from dropping privileges. 3713 */ 3714 3715 syserr("drop_privileges: setuid(0) succeeded (when it should not)"); 3716 rval = EX_OSERR; 3717 } 3718 else if (RunAsUid != euid && setuid(euid) == 0) 3719 { 3720 /* 3721 ** Some operating systems will keep the saved-uid 3722 ** if a non-root effective-uid calls setuid(real-uid) 3723 ** making it possible to set it back again later. 3724 */ 3725 3726 syserr("drop_privileges: Unable to drop non-root set-user-ID privileges"); 3727 rval = EX_OSERR; 3728 } 3729 } 3730 3731 if ((to_real_uid || RunAsGid != 0) && 3732 rval == EX_OK && RunAsGid != EffGid && 3733 getuid() != 0 && geteuid() != 0) 3734 { 3735 errno = 0; 3736 if (setgid(EffGid) == 0) 3737 { 3738 syserr("drop_privileges: setgid(%d) succeeded (when it should not)", 3739 (int) EffGid); 3740 rval = EX_OSERR; 3741 } 3742 } 3743 3744 if (tTd(47, 5)) 3745 { 3746 sm_dprintf("drop_privileges: e/ruid = %d/%d e/rgid = %d/%d\n", 3747 (int) geteuid(), (int) getuid(), 3748 (int) getegid(), (int) getgid()); 3749 sm_dprintf("drop_privileges: RunAsUser = %d:%d\n", 3750 (int) RunAsUid, (int) RunAsGid); 3751 if (tTd(47, 10)) 3752 sm_dprintf("drop_privileges: rval = %d\n", rval); 3753 } 3754 return rval; 3755 } 3756 /* 3757 ** FILL_FD -- make sure a file descriptor has been properly allocated 3758 ** 3759 ** Used to make sure that stdin/out/err are allocated on startup 3760 ** 3761 ** Parameters: 3762 ** fd -- the file descriptor to be filled. 3763 ** where -- a string used for logging. If NULL, this is 3764 ** being called on startup, and logging should 3765 ** not be done. 3766 ** 3767 ** Returns: 3768 ** none 3769 ** 3770 ** Side Effects: 3771 ** possibly changes MissingFds 3772 */ 3773 3774 void 3775 fill_fd(fd, where) 3776 int fd; 3777 char *where; 3778 { 3779 int i; 3780 struct stat stbuf; 3781 3782 if (fstat(fd, &stbuf) >= 0 || errno != EBADF) 3783 return; 3784 3785 if (where != NULL) 3786 syserr("fill_fd: %s: fd %d not open", where, fd); 3787 else 3788 MissingFds |= 1 << fd; 3789 i = open(SM_PATH_DEVNULL, fd == 0 ? O_RDONLY : O_WRONLY, 0666); 3790 if (i < 0) 3791 { 3792 syserr("!fill_fd: %s: cannot open %s", 3793 where == NULL ? "startup" : where, SM_PATH_DEVNULL); 3794 } 3795 if (fd != i) 3796 { 3797 (void) dup2(i, fd); 3798 (void) close(i); 3799 } 3800 } 3801 /* 3802 ** SM_PRINTOPTIONS -- print options 3803 ** 3804 ** Parameters: 3805 ** options -- array of options. 3806 ** 3807 ** Returns: 3808 ** none. 3809 */ 3810 3811 static void 3812 sm_printoptions(options) 3813 char **options; 3814 { 3815 int ll; 3816 char **av; 3817 3818 av = options; 3819 ll = 7; 3820 while (*av != NULL) 3821 { 3822 if (ll + strlen(*av) > 63) 3823 { 3824 sm_dprintf("\n"); 3825 ll = 0; 3826 } 3827 if (ll == 0) 3828 sm_dprintf("\t\t"); 3829 else 3830 sm_dprintf(" "); 3831 sm_dprintf("%s", *av); 3832 ll += strlen(*av++) + 1; 3833 } 3834 sm_dprintf("\n"); 3835 } 3836 /* 3837 ** TESTMODELINE -- process a test mode input line 3838 ** 3839 ** Parameters: 3840 ** line -- the input line. 3841 ** e -- the current environment. 3842 ** Syntax: 3843 ** # a comment 3844 ** .X process X as a configuration line 3845 ** =X dump a configuration item (such as mailers) 3846 ** $X dump a macro or class 3847 ** /X try an activity 3848 ** X normal process through rule set X 3849 */ 3850 3851 static void 3852 testmodeline(line, e) 3853 char *line; 3854 ENVELOPE *e; 3855 { 3856 register char *p; 3857 char *q; 3858 auto char *delimptr; 3859 int mid; 3860 int i, rs; 3861 STAB *map; 3862 char **s; 3863 struct rewrite *rw; 3864 ADDRESS a; 3865 static int tryflags = RF_COPYNONE; 3866 char exbuf[MAXLINE]; 3867 extern unsigned char TokTypeNoC[]; 3868 3869 /* skip leading spaces */ 3870 while (*line == ' ') 3871 line++; 3872 3873 switch (line[0]) 3874 { 3875 case '#': 3876 case '\0': 3877 return; 3878 3879 case '?': 3880 help("-bt", e); 3881 return; 3882 3883 case '.': /* config-style settings */ 3884 switch (line[1]) 3885 { 3886 case 'D': 3887 mid = macid_parse(&line[2], &delimptr); 3888 if (mid == 0) 3889 return; 3890 translate_dollars(delimptr); 3891 macdefine(&e->e_macro, A_TEMP, mid, delimptr); 3892 break; 3893 3894 case 'C': 3895 if (line[2] == '\0') /* not to call syserr() */ 3896 return; 3897 3898 mid = macid_parse(&line[2], &delimptr); 3899 if (mid == 0) 3900 return; 3901 translate_dollars(delimptr); 3902 expand(delimptr, exbuf, sizeof exbuf, e); 3903 p = exbuf; 3904 while (*p != '\0') 3905 { 3906 register char *wd; 3907 char delim; 3908 3909 while (*p != '\0' && isascii(*p) && isspace(*p)) 3910 p++; 3911 wd = p; 3912 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 3913 p++; 3914 delim = *p; 3915 *p = '\0'; 3916 if (wd[0] != '\0') 3917 setclass(mid, wd); 3918 *p = delim; 3919 } 3920 break; 3921 3922 case '\0': 3923 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3924 "Usage: .[DC]macro value(s)\n"); 3925 break; 3926 3927 default: 3928 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3929 "Unknown \".\" command %s\n", line); 3930 break; 3931 } 3932 return; 3933 3934 case '=': /* config-style settings */ 3935 switch (line[1]) 3936 { 3937 case 'S': /* dump rule set */ 3938 rs = strtorwset(&line[2], NULL, ST_FIND); 3939 if (rs < 0) 3940 { 3941 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3942 "Undefined ruleset %s\n", &line[2]); 3943 return; 3944 } 3945 rw = RewriteRules[rs]; 3946 if (rw == NULL) 3947 return; 3948 do 3949 { 3950 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 3951 'R'); 3952 s = rw->r_lhs; 3953 while (*s != NULL) 3954 { 3955 xputs(*s++); 3956 (void) sm_io_putc(smioout, 3957 SM_TIME_DEFAULT, ' '); 3958 } 3959 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 3960 '\t'); 3961 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 3962 '\t'); 3963 s = rw->r_rhs; 3964 while (*s != NULL) 3965 { 3966 xputs(*s++); 3967 (void) sm_io_putc(smioout, 3968 SM_TIME_DEFAULT, ' '); 3969 } 3970 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 3971 '\n'); 3972 } while ((rw = rw->r_next) != NULL); 3973 break; 3974 3975 case 'M': 3976 for (i = 0; i < MAXMAILERS; i++) 3977 { 3978 if (Mailer[i] != NULL) 3979 printmailer(Mailer[i]); 3980 } 3981 break; 3982 3983 case '\0': 3984 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3985 "Usage: =Sruleset or =M\n"); 3986 break; 3987 3988 default: 3989 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3990 "Unknown \"=\" command %s\n", line); 3991 break; 3992 } 3993 return; 3994 3995 case '-': /* set command-line-like opts */ 3996 switch (line[1]) 3997 { 3998 case 'd': 3999 tTflag(&line[2]); 4000 break; 4001 4002 case '\0': 4003 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4004 "Usage: -d{debug arguments}\n"); 4005 break; 4006 4007 default: 4008 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4009 "Unknown \"-\" command %s\n", line); 4010 break; 4011 } 4012 return; 4013 4014 case '$': 4015 if (line[1] == '=') 4016 { 4017 mid = macid(&line[2]); 4018 if (mid != 0) 4019 stabapply(dump_class, mid); 4020 return; 4021 } 4022 mid = macid(&line[1]); 4023 if (mid == 0) 4024 return; 4025 p = macvalue(mid, e); 4026 if (p == NULL) 4027 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4028 "Undefined\n"); 4029 else 4030 { 4031 xputs(p); 4032 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4033 "\n"); 4034 } 4035 return; 4036 4037 case '/': /* miscellaneous commands */ 4038 p = &line[strlen(line)]; 4039 while (--p >= line && isascii(*p) && isspace(*p)) 4040 *p = '\0'; 4041 p = strpbrk(line, " \t"); 4042 if (p != NULL) 4043 { 4044 while (isascii(*p) && isspace(*p)) 4045 *p++ = '\0'; 4046 } 4047 else 4048 p = ""; 4049 if (line[1] == '\0') 4050 { 4051 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4052 "Usage: /[canon|map|mx|parse|try|tryflags]\n"); 4053 return; 4054 } 4055 if (sm_strcasecmp(&line[1], "quit") == 0) 4056 { 4057 CurEnv->e_id = NULL; 4058 finis(true, true, ExitStat); 4059 /* NOTREACHED */ 4060 } 4061 if (sm_strcasecmp(&line[1], "mx") == 0) 4062 { 4063 #if NAMED_BIND 4064 /* look up MX records */ 4065 int nmx; 4066 auto int rcode; 4067 char *mxhosts[MAXMXHOSTS + 1]; 4068 4069 if (*p == '\0') 4070 { 4071 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4072 "Usage: /mx address\n"); 4073 return; 4074 } 4075 nmx = getmxrr(p, mxhosts, NULL, false, &rcode, true, 4076 NULL); 4077 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4078 "getmxrr(%s) returns %d value(s):\n", 4079 p, nmx); 4080 for (i = 0; i < nmx; i++) 4081 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4082 "\t%s\n", mxhosts[i]); 4083 #else /* NAMED_BIND */ 4084 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4085 "No MX code compiled in\n"); 4086 #endif /* NAMED_BIND */ 4087 } 4088 else if (sm_strcasecmp(&line[1], "canon") == 0) 4089 { 4090 char host[MAXHOSTNAMELEN]; 4091 4092 if (*p == '\0') 4093 { 4094 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4095 "Usage: /canon address\n"); 4096 return; 4097 } 4098 else if (sm_strlcpy(host, p, sizeof host) >= sizeof host) 4099 { 4100 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4101 "Name too long\n"); 4102 return; 4103 } 4104 (void) getcanonname(host, sizeof host, !HasWildcardMX, 4105 NULL); 4106 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4107 "getcanonname(%s) returns %s\n", 4108 p, host); 4109 } 4110 else if (sm_strcasecmp(&line[1], "map") == 0) 4111 { 4112 auto int rcode = EX_OK; 4113 char *av[2]; 4114 4115 if (*p == '\0') 4116 { 4117 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4118 "Usage: /map mapname key\n"); 4119 return; 4120 } 4121 for (q = p; *q != '\0' && !(isascii(*q) && isspace(*q)); q++) 4122 continue; 4123 if (*q == '\0') 4124 { 4125 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4126 "No key specified\n"); 4127 return; 4128 } 4129 *q++ = '\0'; 4130 map = stab(p, ST_MAP, ST_FIND); 4131 if (map == NULL) 4132 { 4133 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4134 "Map named \"%s\" not found\n", p); 4135 return; 4136 } 4137 if (!bitset(MF_OPEN, map->s_map.map_mflags) && 4138 !openmap(&(map->s_map))) 4139 { 4140 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4141 "Map named \"%s\" not open\n", p); 4142 return; 4143 } 4144 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4145 "map_lookup: %s (%s) ", p, q); 4146 av[0] = q; 4147 av[1] = NULL; 4148 p = (*map->s_map.map_class->map_lookup) 4149 (&map->s_map, q, av, &rcode); 4150 if (p == NULL) 4151 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4152 "no match (%d)\n", 4153 rcode); 4154 else 4155 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4156 "returns %s (%d)\n", p, 4157 rcode); 4158 } 4159 else if (sm_strcasecmp(&line[1], "try") == 0) 4160 { 4161 MAILER *m; 4162 STAB *st; 4163 auto int rcode = EX_OK; 4164 4165 q = strpbrk(p, " \t"); 4166 if (q != NULL) 4167 { 4168 while (isascii(*q) && isspace(*q)) 4169 *q++ = '\0'; 4170 } 4171 if (q == NULL || *q == '\0') 4172 { 4173 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4174 "Usage: /try mailer address\n"); 4175 return; 4176 } 4177 st = stab(p, ST_MAILER, ST_FIND); 4178 if (st == NULL) 4179 { 4180 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4181 "Unknown mailer %s\n", p); 4182 return; 4183 } 4184 m = st->s_mailer; 4185 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4186 "Trying %s %s address %s for mailer %s\n", 4187 bitset(RF_HEADERADDR, tryflags) ? "header" 4188 : "envelope", 4189 bitset(RF_SENDERADDR, tryflags) ? "sender" 4190 : "recipient", q, p); 4191 p = remotename(q, m, tryflags, &rcode, CurEnv); 4192 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4193 "Rcode = %d, addr = %s\n", 4194 rcode, p == NULL ? "<NULL>" : p); 4195 e->e_to = NULL; 4196 } 4197 else if (sm_strcasecmp(&line[1], "tryflags") == 0) 4198 { 4199 if (*p == '\0') 4200 { 4201 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4202 "Usage: /tryflags [Hh|Ee][Ss|Rr]\n"); 4203 return; 4204 } 4205 for (; *p != '\0'; p++) 4206 { 4207 switch (*p) 4208 { 4209 case 'H': 4210 case 'h': 4211 tryflags |= RF_HEADERADDR; 4212 break; 4213 4214 case 'E': 4215 case 'e': 4216 tryflags &= ~RF_HEADERADDR; 4217 break; 4218 4219 case 'S': 4220 case 's': 4221 tryflags |= RF_SENDERADDR; 4222 break; 4223 4224 case 'R': 4225 case 'r': 4226 tryflags &= ~RF_SENDERADDR; 4227 break; 4228 } 4229 } 4230 exbuf[0] = bitset(RF_HEADERADDR, tryflags) ? 'h' : 'e'; 4231 exbuf[1] = ' '; 4232 exbuf[2] = bitset(RF_SENDERADDR, tryflags) ? 's' : 'r'; 4233 exbuf[3] = '\0'; 4234 macdefine(&e->e_macro, A_TEMP, 4235 macid("{addr_type}"), exbuf); 4236 } 4237 else if (sm_strcasecmp(&line[1], "parse") == 0) 4238 { 4239 if (*p == '\0') 4240 { 4241 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4242 "Usage: /parse address\n"); 4243 return; 4244 } 4245 q = crackaddr(p, e); 4246 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4247 "Cracked address = "); 4248 xputs(q); 4249 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4250 "\nParsing %s %s address\n", 4251 bitset(RF_HEADERADDR, tryflags) ? 4252 "header" : "envelope", 4253 bitset(RF_SENDERADDR, tryflags) ? 4254 "sender" : "recipient"); 4255 if (parseaddr(p, &a, tryflags, '\0', NULL, e, true) 4256 == NULL) 4257 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4258 "Cannot parse\n"); 4259 else if (a.q_host != NULL && a.q_host[0] != '\0') 4260 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4261 "mailer %s, host %s, user %s\n", 4262 a.q_mailer->m_name, 4263 a.q_host, 4264 a.q_user); 4265 else 4266 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4267 "mailer %s, user %s\n", 4268 a.q_mailer->m_name, 4269 a.q_user); 4270 e->e_to = NULL; 4271 } 4272 else 4273 { 4274 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4275 "Unknown \"/\" command %s\n", 4276 line); 4277 } 4278 return; 4279 } 4280 4281 for (p = line; isascii(*p) && isspace(*p); p++) 4282 continue; 4283 q = p; 4284 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 4285 p++; 4286 if (*p == '\0') 4287 { 4288 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4289 "No address!\n"); 4290 return; 4291 } 4292 *p = '\0'; 4293 if (invalidaddr(p + 1, NULL, true)) 4294 return; 4295 do 4296 { 4297 register char **pvp; 4298 char pvpbuf[PSBUFSIZE]; 4299 4300 pvp = prescan(++p, ',', pvpbuf, sizeof pvpbuf, 4301 &delimptr, ConfigLevel >= 9 ? TokTypeNoC : NULL); 4302 if (pvp == NULL) 4303 continue; 4304 p = q; 4305 while (*p != '\0') 4306 { 4307 int status; 4308 4309 rs = strtorwset(p, NULL, ST_FIND); 4310 if (rs < 0) 4311 { 4312 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4313 "Undefined ruleset %s\n", 4314 p); 4315 break; 4316 } 4317 status = REWRITE(pvp, rs, e); 4318 if (status != EX_OK) 4319 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4320 "== Ruleset %s (%d) status %d\n", 4321 p, rs, status); 4322 while (*p != '\0' && *p++ != ',') 4323 continue; 4324 } 4325 } while (*(p = delimptr) != '\0'); 4326 } 4327 4328 static void 4329 dump_class(s, id) 4330 register STAB *s; 4331 int id; 4332 { 4333 if (s->s_symtype != ST_CLASS) 4334 return; 4335 if (bitnset(bitidx(id), s->s_class)) 4336 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4337 "%s\n", s->s_name); 4338 } 4339 4340 /* 4341 ** An exception type used to create QuickAbort exceptions. 4342 ** This is my first cut at converting QuickAbort from longjmp to exceptions. 4343 ** These exceptions have a single integer argument, which is the argument 4344 ** to longjmp in the original code (either 1 or 2). I don't know the 4345 ** significance of 1 vs 2: the calls to setjmp don't care. 4346 */ 4347 4348 const SM_EXC_TYPE_T EtypeQuickAbort = 4349 { 4350 SmExcTypeMagic, 4351 "E:mta.quickabort", 4352 "i", 4353 sm_etype_printf, 4354 "quick abort %0", 4355 }; 4356