1 /* 2 * Copyright (c) 1998-2006, 2008 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 /* 15 * Copyright 1996-2006 Sun Microsystems, Inc. All rights reserved. 16 * Use is subject to license terms. 17 */ 18 19 #define _DEFINE 20 #include <sendmail.h> 21 #include <sm/sendmail.h> 22 #include <sm/xtrap.h> 23 #include <sm/signal.h> 24 25 #ifndef lint 26 SM_UNUSED(static char copyright[]) = 27 "@(#) Copyright (c) 1998-2003 Sendmail, Inc. and its suppliers.\n\ 28 @(#) All rights reserved.\n\ 29 @(#) Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.\n\ 30 @(#) Copyright (c) 1988, 1993\n\ 31 @(#) The Regents of the University of California. All rights reserved.\n\ 32 @(#) Copyright 1996-2006 Sun Microsystems, Inc. All rights reserved.\n\ 33 @(#) Use is subject to license terms.\n"; 34 #endif /* ! lint */ 35 36 #pragma ident "%Z%%M% %I% %E% SMI" 37 38 SM_RCSID("@(#)$Id: main.c,v 8.967 2008/03/31 16:32:13 ca Exp $") 39 SM_IDSTR(i2, "%W% (Sun) %G%") 40 41 #if NETINET || NETINET6 42 # include <arpa/inet.h> 43 #endif /* NETINET || NETINET6 */ 44 45 /* for getcfname() */ 46 #include <sendmail/pathnames.h> 47 48 static SM_DEBUG_T 49 DebugNoPRestart = SM_DEBUG_INITIALIZER("no_persistent_restart", 50 "@(#)$Debug: no_persistent_restart - don't restart, log only $"); 51 52 static void dump_class __P((STAB *, int)); 53 static void obsolete __P((char **)); 54 static void testmodeline __P((char *, ENVELOPE *)); 55 static char *getextenv __P((const char *)); 56 static void sm_printoptions __P((char **)); 57 static SIGFUNC_DECL intindebug __P((int)); 58 static SIGFUNC_DECL sighup __P((int)); 59 static SIGFUNC_DECL sigpipe __P((int)); 60 static SIGFUNC_DECL sigterm __P((int)); 61 #ifdef SIGUSR1 62 static SIGFUNC_DECL sigusr1 __P((int)); 63 #endif /* SIGUSR1 */ 64 65 /* 66 ** SENDMAIL -- Post mail to a set of destinations. 67 ** 68 ** This is the basic mail router. All user mail programs should 69 ** call this routine to actually deliver mail. Sendmail in 70 ** turn calls a bunch of mail servers that do the real work of 71 ** delivering the mail. 72 ** 73 ** Sendmail is driven by settings read in from /etc/mail/sendmail.cf 74 ** (read by readcf.c). 75 ** 76 ** Usage: 77 ** /usr/lib/sendmail [flags] addr ... 78 ** 79 ** See the associated documentation for details. 80 ** 81 ** Authors: 82 ** Eric Allman, UCB/INGRES (until 10/81). 83 ** Britton-Lee, Inc., purveyors of fine 84 ** database computers (11/81 - 10/88). 85 ** International Computer Science Institute 86 ** (11/88 - 9/89). 87 ** UCB/Mammoth Project (10/89 - 7/95). 88 ** InReference, Inc. (8/95 - 1/97). 89 ** Sendmail, Inc. (1/98 - present). 90 ** The support of my employers is gratefully acknowledged. 91 ** Few of them (Britton-Lee in particular) have had 92 ** anything to gain from my involvement in this project. 93 ** 94 ** Gregory Neil Shapiro, 95 ** Worcester Polytechnic Institute (until 3/98). 96 ** Sendmail, Inc. (3/98 - present). 97 ** 98 ** Claus Assmann, 99 ** Sendmail, Inc. (12/98 - present). 100 */ 101 102 char *FullName; /* sender's full name */ 103 ENVELOPE BlankEnvelope; /* a "blank" envelope */ 104 static ENVELOPE MainEnvelope; /* the envelope around the basic letter */ 105 ADDRESS NullAddress = /* a null address */ 106 { "", "", NULL, "" }; 107 char *CommandLineArgs; /* command line args for pid file */ 108 bool Warn_Q_option = false; /* warn about Q option use */ 109 static int MissingFds = 0; /* bit map of fds missing on startup */ 110 char *Mbdb = "pw"; /* mailbox database defaults to /etc/passwd */ 111 112 #ifdef NGROUPS_MAX 113 GIDSET_T InitialGidSet[NGROUPS_MAX]; 114 #endif /* NGROUPS_MAX */ 115 116 #define MAXCONFIGLEVEL 10 /* highest config version level known */ 117 118 #if SASL 119 static sasl_callback_t srvcallbacks[] = 120 { 121 { SASL_CB_VERIFYFILE, &safesaslfile, NULL }, 122 { SASL_CB_PROXY_POLICY, &proxy_policy, NULL }, 123 { SASL_CB_LIST_END, NULL, NULL } 124 }; 125 #endif /* SASL */ 126 127 unsigned int SubmitMode; 128 int SyslogPrefixLen; /* estimated length of syslog prefix */ 129 #define PIDLEN 6 /* pid length for computing SyslogPrefixLen */ 130 #ifndef SL_FUDGE 131 # define SL_FUDGE 10 /* fudge offset for SyslogPrefixLen */ 132 #endif /* ! SL_FUDGE */ 133 #define SLDLL 8 /* est. length of default syslog label */ 134 135 136 /* Some options are dangerous to allow users to use in non-submit mode */ 137 #define CHECK_AGAINST_OPMODE(cmd) \ 138 { \ 139 if (extraprivs && \ 140 OpMode != MD_DELIVER && OpMode != MD_SMTP && \ 141 OpMode != MD_ARPAFTP && \ 142 OpMode != MD_VERIFY && OpMode != MD_TEST) \ 143 { \ 144 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \ 145 "WARNING: Ignoring submission mode -%c option (not in submission mode)\n", \ 146 (cmd)); \ 147 break; \ 148 } \ 149 if (extraprivs && queuerun) \ 150 { \ 151 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \ 152 "WARNING: Ignoring submission mode -%c option with -q\n", \ 153 (cmd)); \ 154 break; \ 155 } \ 156 } 157 158 int 159 main(argc, argv, envp) 160 int argc; 161 char **argv; 162 char **envp; 163 { 164 register char *p; 165 char **av; 166 extern char Version[]; 167 char *ep, *from; 168 STAB *st; 169 register int i; 170 int j; 171 int dp; 172 int fill_errno; 173 int qgrp = NOQGRP; /* queue group to process */ 174 bool safecf = true; 175 BITMAP256 *p_flags = NULL; /* daemon flags */ 176 bool warn_C_flag = false; 177 bool auth = true; /* whether to set e_auth_param */ 178 char warn_f_flag = '\0'; 179 bool run_in_foreground = false; /* -bD mode */ 180 bool queuerun = false, debug = false; 181 struct passwd *pw; 182 struct hostent *hp; 183 char *nullserver = NULL; 184 char *authinfo = NULL; 185 char *sysloglabel = NULL; /* label for syslog */ 186 char *conffile = NULL; /* name of .cf file */ 187 char *queuegroup = NULL; /* queue group to process */ 188 char *quarantining = NULL; /* quarantine queue items? */ 189 bool extraprivs; 190 bool forged, negate; 191 bool queuepersistent = false; /* queue runner process runs forever */ 192 bool foregroundqueue = false; /* queue run in foreground */ 193 bool save_val; /* to save some bool var. */ 194 int cftype; /* which cf file to use? */ 195 SM_FILE_T *smdebug; 196 static time_t starttime = 0; /* when was process started */ 197 struct stat traf_st; /* for TrafficLog FIFO check */ 198 char buf[MAXLINE]; 199 char jbuf[MAXHOSTNAMELEN]; /* holds MyHostName */ 200 static char rnamebuf[MAXNAME]; /* holds RealUserName */ 201 char *emptyenviron[1]; 202 #if STARTTLS 203 bool tls_ok; 204 #endif /* STARTTLS */ 205 QUEUE_CHAR *new; 206 ENVELOPE *e; 207 extern int DtableSize; 208 extern int optind; 209 extern int opterr; 210 extern char *optarg; 211 extern char **environ; 212 #if SASL 213 extern void sm_sasl_init __P((void)); 214 #endif /* SASL */ 215 216 #if USE_ENVIRON 217 envp = environ; 218 #endif /* USE_ENVIRON */ 219 220 /* turn off profiling */ 221 SM_PROF(0); 222 223 /* install default exception handler */ 224 sm_exc_newthread(fatal_error); 225 226 /* set the default in/out channel so errors reported to screen */ 227 InChannel = smioin; 228 OutChannel = smioout; 229 230 /* 231 ** Check to see if we reentered. 232 ** This would normally happen if e_putheader or e_putbody 233 ** were NULL when invoked. 234 */ 235 236 if (starttime != 0) 237 { 238 syserr("main: reentered!"); 239 abort(); 240 } 241 starttime = curtime(); 242 243 /* avoid null pointer dereferences */ 244 TermEscape.te_rv_on = TermEscape.te_under_on = TermEscape.te_normal = ""; 245 246 RealUid = getuid(); 247 RealGid = getgid(); 248 249 /* Check if sendmail is running with extra privs */ 250 extraprivs = (RealUid != 0 && 251 (geteuid() != getuid() || getegid() != getgid())); 252 253 CurrentPid = getpid(); 254 255 /* get whatever .cf file is right for the opmode */ 256 cftype = SM_GET_RIGHT_CF; 257 258 /* in 4.4BSD, the table can be huge; impose a reasonable limit */ 259 DtableSize = getdtsize(); 260 if (DtableSize > 256) 261 DtableSize = 256; 262 263 /* 264 ** Be sure we have enough file descriptors. 265 ** But also be sure that 0, 1, & 2 are open. 266 */ 267 268 /* reset errno and fill_errno; the latter is used way down below */ 269 errno = fill_errno = 0; 270 fill_fd(STDIN_FILENO, NULL); 271 if (errno != 0) 272 fill_errno = errno; 273 fill_fd(STDOUT_FILENO, NULL); 274 if (errno != 0) 275 fill_errno = errno; 276 fill_fd(STDERR_FILENO, NULL); 277 if (errno != 0) 278 fill_errno = errno; 279 280 sm_closefrom(STDERR_FILENO + 1, DtableSize); 281 errno = 0; 282 smdebug = NULL; 283 284 #if LOG 285 # ifndef SM_LOG_STR 286 # define SM_LOG_STR "sendmail" 287 # endif /* ! SM_LOG_STR */ 288 # ifdef LOG_MAIL 289 openlog(SM_LOG_STR, LOG_PID, LOG_MAIL); 290 # else /* LOG_MAIL */ 291 openlog(SM_LOG_STR, LOG_PID); 292 # endif /* LOG_MAIL */ 293 #endif /* LOG */ 294 295 /* 296 ** Seed the random number generator. 297 ** Used for queue file names, picking a queue directory, and 298 ** MX randomization. 299 */ 300 301 seed_random(); 302 303 /* do machine-dependent initializations */ 304 init_md(argc, argv); 305 306 307 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + SL_FUDGE + SLDLL; 308 309 /* reset status from syserr() calls for missing file descriptors */ 310 Errors = 0; 311 ExitStat = EX_OK; 312 313 SubmitMode = SUBMIT_UNKNOWN; 314 #if _FFR_LOCAL_DAEMON 315 LocalDaemon = false; 316 #endif /* _FFR_LOCAL_DAEMON */ 317 #if XDEBUG 318 checkfd012("after openlog"); 319 #endif /* XDEBUG */ 320 321 tTsetup(tTdvect, sizeof(tTdvect), "0-99.1,*_trace_*.1"); 322 323 #ifdef NGROUPS_MAX 324 /* save initial group set for future checks */ 325 i = getgroups(NGROUPS_MAX, InitialGidSet); 326 if (i <= 0) 327 { 328 InitialGidSet[0] = (GID_T) -1; 329 i = 0; 330 } 331 while (i < NGROUPS_MAX) 332 InitialGidSet[i++] = InitialGidSet[0]; 333 #endif /* NGROUPS_MAX */ 334 335 /* drop group id privileges (RunAsUser not yet set) */ 336 dp = drop_privileges(false); 337 setstat(dp); 338 339 #ifdef SIGUSR1 340 /* Only allow root (or non-set-*-ID binaries) to use SIGUSR1 */ 341 if (!extraprivs) 342 { 343 /* arrange to dump state on user-1 signal */ 344 (void) sm_signal(SIGUSR1, sigusr1); 345 } 346 else 347 { 348 /* ignore user-1 signal */ 349 (void) sm_signal(SIGUSR1, SIG_IGN); 350 } 351 #endif /* SIGUSR1 */ 352 353 /* initialize for setproctitle */ 354 initsetproctitle(argc, argv, envp); 355 356 /* Handle any non-getoptable constructions. */ 357 obsolete(argv); 358 359 /* 360 ** Do a quick prescan of the argument list. 361 */ 362 363 364 /* find initial opMode */ 365 OpMode = MD_DELIVER; 366 av = argv; 367 p = strrchr(*av, '/'); 368 if (p++ == NULL) 369 p = *av; 370 if (strcmp(p, "newaliases") == 0) 371 OpMode = MD_INITALIAS; 372 else if (strcmp(p, "mailq") == 0) 373 OpMode = MD_PRINT; 374 else if (strcmp(p, "smtpd") == 0) 375 OpMode = MD_DAEMON; 376 else if (strcmp(p, "hoststat") == 0) 377 OpMode = MD_HOSTSTAT; 378 else if (strcmp(p, "purgestat") == 0) 379 OpMode = MD_PURGESTAT; 380 381 #if defined(__osf__) || defined(_AIX3) 382 # define OPTIONS "A:B:b:C:cD:d:e:F:f:Gh:IiL:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:x" 383 #endif /* defined(__osf__) || defined(_AIX3) */ 384 #if defined(sony_news) 385 # define OPTIONS "A:B:b:C:cD:d:E:e:F:f:Gh:IiJ:L:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:" 386 #endif /* defined(sony_news) */ 387 #ifndef OPTIONS 388 # define OPTIONS "A:B:b:C:cD:d:e:F:f:Gh:IiL:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:" 389 #endif /* ! OPTIONS */ 390 391 /* Set to 0 to allow -b; need to check optarg before using it! */ 392 opterr = 0; 393 while ((j = getopt(argc, argv, OPTIONS)) != -1) 394 { 395 switch (j) 396 { 397 case 'b': /* operations mode */ 398 j = (optarg == NULL) ? ' ' : *optarg; 399 switch (j) 400 { 401 case MD_DAEMON: 402 case MD_FGDAEMON: 403 case MD_SMTP: 404 case MD_INITALIAS: 405 case MD_DELIVER: 406 case MD_VERIFY: 407 case MD_TEST: 408 case MD_PRINT: 409 case MD_PRINTNQE: 410 case MD_HOSTSTAT: 411 case MD_PURGESTAT: 412 case MD_ARPAFTP: 413 OpMode = j; 414 break; 415 416 #if _FFR_LOCAL_DAEMON 417 case MD_LOCAL: 418 OpMode = MD_DAEMON; 419 LocalDaemon = true; 420 break; 421 #endif /* _FFR_LOCAL_DAEMON */ 422 423 case MD_FREEZE: 424 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 425 "Frozen configurations unsupported\n"); 426 return EX_USAGE; 427 428 default: 429 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 430 "Invalid operation mode %c\n", 431 j); 432 return EX_USAGE; 433 } 434 break; 435 436 case 'D': 437 if (debug) 438 { 439 errno = 0; 440 syserr("-D file must be before -d"); 441 ExitStat = EX_USAGE; 442 break; 443 } 444 dp = drop_privileges(true); 445 setstat(dp); 446 smdebug = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, 447 optarg, SM_IO_APPEND, NULL); 448 if (smdebug == NULL) 449 { 450 syserr("cannot open %s", optarg); 451 ExitStat = EX_CANTCREAT; 452 break; 453 } 454 sm_debug_setfile(smdebug); 455 break; 456 457 case 'd': 458 debug = true; 459 tTflag(optarg); 460 (void) sm_io_setvbuf(sm_debug_file(), SM_TIME_DEFAULT, 461 (char *) NULL, SM_IO_NBF, 462 SM_IO_BUFSIZ); 463 break; 464 465 case 'G': /* relay (gateway) submission */ 466 SubmitMode = SUBMIT_MTA; 467 break; 468 469 case 'L': 470 if (optarg == NULL) 471 { 472 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 473 "option requires an argument -- '%c'", 474 (char) j); 475 return EX_USAGE; 476 } 477 j = SM_MIN(strlen(optarg), 32) + 1; 478 sysloglabel = xalloc(j); 479 (void) sm_strlcpy(sysloglabel, optarg, j); 480 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + 481 SL_FUDGE + j; 482 break; 483 484 case 'Q': 485 case 'q': 486 /* just check if it is there */ 487 queuerun = true; 488 break; 489 } 490 } 491 opterr = 1; 492 493 /* Don't leak queue information via debug flags */ 494 if (extraprivs && queuerun && debug) 495 { 496 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 497 "WARNING: Can not use -d with -q. Disabling debugging.\n"); 498 sm_debug_close(); 499 sm_debug_setfile(NULL); 500 (void) memset(tTdvect, '\0', sizeof(tTdvect)); 501 } 502 503 #if LOG 504 if (sysloglabel != NULL) 505 { 506 /* Sanitize the string */ 507 for (p = sysloglabel; *p != '\0'; p++) 508 { 509 if (!isascii(*p) || !isprint(*p) || *p == '%') 510 *p = '*'; 511 } 512 closelog(); 513 # ifdef LOG_MAIL 514 openlog(sysloglabel, LOG_PID, LOG_MAIL); 515 # else /* LOG_MAIL */ 516 openlog(sysloglabel, LOG_PID); 517 # endif /* LOG_MAIL */ 518 } 519 #endif /* LOG */ 520 521 /* set up the blank envelope */ 522 BlankEnvelope.e_puthdr = putheader; 523 BlankEnvelope.e_putbody = putbody; 524 BlankEnvelope.e_xfp = NULL; 525 STRUCTCOPY(NullAddress, BlankEnvelope.e_from); 526 CurEnv = &BlankEnvelope; 527 STRUCTCOPY(NullAddress, MainEnvelope.e_from); 528 529 /* 530 ** Set default values for variables. 531 ** These cannot be in initialized data space. 532 */ 533 534 setdefaults(&BlankEnvelope); 535 initmacros(&BlankEnvelope); 536 537 /* reset macro */ 538 set_op_mode(OpMode); 539 if (OpMode == MD_DAEMON) 540 DaemonPid = CurrentPid; /* needed for finis() to work */ 541 542 pw = sm_getpwuid(RealUid); 543 if (pw != NULL) 544 (void) sm_strlcpy(rnamebuf, pw->pw_name, sizeof(rnamebuf)); 545 else 546 (void) sm_snprintf(rnamebuf, sizeof(rnamebuf), "Unknown UID %d", 547 (int) RealUid); 548 549 RealUserName = rnamebuf; 550 551 if (tTd(0, 101)) 552 { 553 sm_dprintf("Version %s\n", Version); 554 finis(false, true, EX_OK); 555 /* NOTREACHED */ 556 } 557 558 /* 559 ** if running non-set-user-ID binary as non-root, pretend 560 ** we are the RunAsUid 561 */ 562 563 if (RealUid != 0 && geteuid() == RealUid) 564 { 565 if (tTd(47, 1)) 566 sm_dprintf("Non-set-user-ID binary: RunAsUid = RealUid = %d\n", 567 (int) RealUid); 568 RunAsUid = RealUid; 569 } 570 else if (geteuid() != 0) 571 RunAsUid = geteuid(); 572 573 EffGid = getegid(); 574 if (RealUid != 0 && EffGid == RealGid) 575 RunAsGid = RealGid; 576 577 if (tTd(47, 5)) 578 { 579 sm_dprintf("main: e/ruid = %d/%d e/rgid = %d/%d\n", 580 (int) geteuid(), (int) getuid(), 581 (int) getegid(), (int) getgid()); 582 sm_dprintf("main: RunAsUser = %d:%d\n", 583 (int) RunAsUid, (int) RunAsGid); 584 } 585 586 /* save command line arguments */ 587 j = 0; 588 for (av = argv; *av != NULL; ) 589 j += strlen(*av++) + 1; 590 SaveArgv = (char **) xalloc(sizeof(char *) * (argc + 1)); 591 CommandLineArgs = xalloc(j); 592 p = CommandLineArgs; 593 for (av = argv, i = 0; *av != NULL; ) 594 { 595 int h; 596 597 SaveArgv[i++] = newstr(*av); 598 if (av != argv) 599 *p++ = ' '; 600 (void) sm_strlcpy(p, *av++, j); 601 h = strlen(p); 602 p += h; 603 j -= h + 1; 604 } 605 SaveArgv[i] = NULL; 606 607 if (tTd(0, 1)) 608 { 609 extern char *CompileOptions[]; 610 611 sm_dprintf("Version %s\n Compiled with:", Version); 612 sm_printoptions(CompileOptions); 613 } 614 if (tTd(0, 10)) 615 { 616 extern char *OsCompileOptions[]; 617 618 sm_dprintf(" OS Defines:"); 619 sm_printoptions(OsCompileOptions); 620 #ifdef _PATH_UNIX 621 sm_dprintf("Kernel symbols:\t%s\n", _PATH_UNIX); 622 #endif /* _PATH_UNIX */ 623 624 sm_dprintf(" Conf file:\t%s (default for MSP)\n", 625 getcfname(OpMode, SubmitMode, SM_GET_SUBMIT_CF, 626 conffile)); 627 sm_dprintf(" Conf file:\t%s (default for MTA)\n", 628 getcfname(OpMode, SubmitMode, SM_GET_SENDMAIL_CF, 629 conffile)); 630 sm_dprintf(" Pid file:\t%s (default)\n", PidFile); 631 } 632 633 if (tTd(0, 12)) 634 { 635 extern char *SmCompileOptions[]; 636 637 sm_dprintf(" libsm Defines:"); 638 sm_printoptions(SmCompileOptions); 639 } 640 641 if (tTd(0, 13)) 642 { 643 extern char *FFRCompileOptions[]; 644 645 sm_dprintf(" FFR Defines:"); 646 sm_printoptions(FFRCompileOptions); 647 } 648 649 /* clear sendmail's environment */ 650 ExternalEnviron = environ; 651 emptyenviron[0] = NULL; 652 environ = emptyenviron; 653 654 /* 655 ** restore any original TZ setting until TimeZoneSpec has been 656 ** determined - or early log messages may get bogus time stamps 657 */ 658 659 if ((p = getextenv("TZ")) != NULL) 660 { 661 char *tz; 662 int tzlen; 663 664 /* XXX check for reasonable length? */ 665 tzlen = strlen(p) + 4; 666 tz = xalloc(tzlen); 667 (void) sm_strlcpyn(tz, tzlen, 2, "TZ=", p); 668 669 /* XXX check return code? */ 670 (void) putenv(tz); 671 } 672 673 /* prime the child environment */ 674 sm_setuserenv("AGENT", "sendmail"); 675 676 (void) sm_signal(SIGPIPE, SIG_IGN); 677 OldUmask = umask(022); 678 FullName = getextenv("NAME"); 679 if (FullName != NULL) 680 FullName = newstr(FullName); 681 682 /* 683 ** Initialize name server if it is going to be used. 684 */ 685 686 #if NAMED_BIND 687 if (!bitset(RES_INIT, _res.options)) 688 (void) res_init(); 689 if (tTd(8, 8)) 690 _res.options |= RES_DEBUG; 691 else 692 _res.options &= ~RES_DEBUG; 693 # ifdef RES_NOALIASES 694 _res.options |= RES_NOALIASES; 695 # endif /* RES_NOALIASES */ 696 TimeOuts.res_retry[RES_TO_DEFAULT] = _res.retry; 697 TimeOuts.res_retry[RES_TO_FIRST] = _res.retry; 698 TimeOuts.res_retry[RES_TO_NORMAL] = _res.retry; 699 TimeOuts.res_retrans[RES_TO_DEFAULT] = _res.retrans; 700 TimeOuts.res_retrans[RES_TO_FIRST] = _res.retrans; 701 TimeOuts.res_retrans[RES_TO_NORMAL] = _res.retrans; 702 #endif /* NAMED_BIND */ 703 704 errno = 0; 705 from = NULL; 706 707 /* initialize some macros, etc. */ 708 init_vendor_macros(&BlankEnvelope); 709 710 /* version */ 711 macdefine(&BlankEnvelope.e_macro, A_PERM, 'v', Version); 712 713 /* hostname */ 714 hp = myhostname(jbuf, sizeof(jbuf)); 715 if (jbuf[0] != '\0') 716 { 717 struct utsname utsname; 718 719 if (tTd(0, 4)) 720 sm_dprintf("Canonical name: %s\n", jbuf); 721 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'w', jbuf); 722 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'j', jbuf); 723 setclass('w', jbuf); 724 725 p = strchr(jbuf, '.'); 726 if (p != NULL && p[1] != '\0') 727 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'm', &p[1]); 728 729 if (uname(&utsname) >= 0) 730 p = utsname.nodename; 731 else 732 { 733 if (tTd(0, 22)) 734 sm_dprintf("uname failed (%s)\n", 735 sm_errstring(errno)); 736 makelower(jbuf); 737 p = jbuf; 738 } 739 if (tTd(0, 4)) 740 sm_dprintf(" UUCP nodename: %s\n", p); 741 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'k', p); 742 setclass('k', p); 743 setclass('w', p); 744 } 745 if (hp != NULL) 746 { 747 for (av = hp->h_aliases; av != NULL && *av != NULL; av++) 748 { 749 if (tTd(0, 4)) 750 sm_dprintf("\ta.k.a.: %s\n", *av); 751 setclass('w', *av); 752 } 753 #if NETINET || NETINET6 754 for (i = 0; i >= 0 && hp->h_addr_list[i] != NULL; i++) 755 { 756 # if NETINET6 757 char *addr; 758 char buf6[INET6_ADDRSTRLEN]; 759 struct in6_addr ia6; 760 # endif /* NETINET6 */ 761 # if NETINET 762 struct in_addr ia; 763 # endif /* NETINET */ 764 char ipbuf[103]; 765 766 ipbuf[0] = '\0'; 767 switch (hp->h_addrtype) 768 { 769 # if NETINET 770 case AF_INET: 771 if (hp->h_length != INADDRSZ) 772 break; 773 774 memmove(&ia, hp->h_addr_list[i], INADDRSZ); 775 (void) sm_snprintf(ipbuf, sizeof(ipbuf), 776 "[%.100s]", inet_ntoa(ia)); 777 break; 778 # endif /* NETINET */ 779 780 # if NETINET6 781 case AF_INET6: 782 if (hp->h_length != IN6ADDRSZ) 783 break; 784 785 memmove(&ia6, hp->h_addr_list[i], IN6ADDRSZ); 786 addr = anynet_ntop(&ia6, buf6, sizeof(buf6)); 787 if (addr != NULL) 788 (void) sm_snprintf(ipbuf, sizeof(ipbuf), 789 "[%.100s]", addr); 790 break; 791 # endif /* NETINET6 */ 792 } 793 if (ipbuf[0] == '\0') 794 break; 795 796 if (tTd(0, 4)) 797 sm_dprintf("\ta.k.a.: %s\n", ipbuf); 798 setclass('w', ipbuf); 799 } 800 #endif /* NETINET || NETINET6 */ 801 #if NETINET6 802 freehostent(hp); 803 hp = NULL; 804 #endif /* NETINET6 */ 805 } 806 807 /* current time */ 808 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'b', arpadate((char *) NULL)); 809 810 /* current load average */ 811 sm_getla(); 812 813 QueueLimitRecipient = (QUEUE_CHAR *) NULL; 814 QueueLimitSender = (QUEUE_CHAR *) NULL; 815 QueueLimitId = (QUEUE_CHAR *) NULL; 816 QueueLimitQuarantine = (QUEUE_CHAR *) NULL; 817 818 /* 819 ** Crack argv. 820 */ 821 822 optind = 1; 823 while ((j = getopt(argc, argv, OPTIONS)) != -1) 824 { 825 switch (j) 826 { 827 case 'b': /* operations mode */ 828 /* already done */ 829 break; 830 831 case 'A': /* use Alternate sendmail/submit.cf */ 832 cftype = optarg[0] == 'c' ? SM_GET_SUBMIT_CF 833 : SM_GET_SENDMAIL_CF; 834 break; 835 836 case 'B': /* body type */ 837 CHECK_AGAINST_OPMODE(j); 838 BlankEnvelope.e_bodytype = newstr(optarg); 839 break; 840 841 case 'C': /* select configuration file (already done) */ 842 if (RealUid != 0) 843 warn_C_flag = true; 844 conffile = newstr(optarg); 845 dp = drop_privileges(true); 846 setstat(dp); 847 safecf = false; 848 break; 849 850 case 'D': 851 case 'd': /* debugging */ 852 /* already done */ 853 break; 854 855 case 'f': /* from address */ 856 case 'r': /* obsolete -f flag */ 857 CHECK_AGAINST_OPMODE(j); 858 if (from != NULL) 859 { 860 usrerr("More than one \"from\" person"); 861 ExitStat = EX_USAGE; 862 break; 863 } 864 if (optarg[0] == '\0') 865 from = newstr("<>"); 866 else 867 from = newstr(denlstring(optarg, true, true)); 868 if (strcmp(RealUserName, from) != 0) 869 warn_f_flag = j; 870 break; 871 872 case 'F': /* set full name */ 873 CHECK_AGAINST_OPMODE(j); 874 FullName = newstr(optarg); 875 break; 876 877 case 'G': /* relay (gateway) submission */ 878 /* already set */ 879 CHECK_AGAINST_OPMODE(j); 880 break; 881 882 case 'h': /* hop count */ 883 CHECK_AGAINST_OPMODE(j); 884 BlankEnvelope.e_hopcount = (short) strtol(optarg, &ep, 885 10); 886 (void) sm_snprintf(buf, sizeof(buf), "%d", 887 BlankEnvelope.e_hopcount); 888 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'c', buf); 889 890 if (*ep) 891 { 892 usrerr("Bad hop count (%s)", optarg); 893 ExitStat = EX_USAGE; 894 } 895 break; 896 897 case 'L': /* program label */ 898 /* already set */ 899 break; 900 901 case 'n': /* don't alias */ 902 CHECK_AGAINST_OPMODE(j); 903 NoAlias = true; 904 break; 905 906 case 'N': /* delivery status notifications */ 907 CHECK_AGAINST_OPMODE(j); 908 DefaultNotify |= QHASNOTIFY; 909 macdefine(&BlankEnvelope.e_macro, A_TEMP, 910 macid("{dsn_notify}"), optarg); 911 if (sm_strcasecmp(optarg, "never") == 0) 912 break; 913 for (p = optarg; p != NULL; optarg = p) 914 { 915 p = strchr(p, ','); 916 if (p != NULL) 917 *p++ = '\0'; 918 if (sm_strcasecmp(optarg, "success") == 0) 919 DefaultNotify |= QPINGONSUCCESS; 920 else if (sm_strcasecmp(optarg, "failure") == 0) 921 DefaultNotify |= QPINGONFAILURE; 922 else if (sm_strcasecmp(optarg, "delay") == 0) 923 DefaultNotify |= QPINGONDELAY; 924 else 925 { 926 usrerr("Invalid -N argument"); 927 ExitStat = EX_USAGE; 928 } 929 } 930 break; 931 932 case 'o': /* set option */ 933 setoption(*optarg, optarg + 1, false, true, 934 &BlankEnvelope); 935 break; 936 937 case 'O': /* set option (long form) */ 938 setoption(' ', optarg, false, true, &BlankEnvelope); 939 break; 940 941 case 'p': /* set protocol */ 942 CHECK_AGAINST_OPMODE(j); 943 p = strchr(optarg, ':'); 944 if (p != NULL) 945 { 946 *p++ = '\0'; 947 if (*p != '\0') 948 { 949 i = strlen(p) + 1; 950 ep = sm_malloc_x(i); 951 cleanstrcpy(ep, p, i); 952 macdefine(&BlankEnvelope.e_macro, 953 A_HEAP, 's', ep); 954 } 955 } 956 if (*optarg != '\0') 957 { 958 i = strlen(optarg) + 1; 959 ep = sm_malloc_x(i); 960 cleanstrcpy(ep, optarg, i); 961 macdefine(&BlankEnvelope.e_macro, A_HEAP, 962 'r', ep); 963 } 964 break; 965 966 case 'Q': /* change quarantining on queued items */ 967 /* sanity check */ 968 if (OpMode != MD_DELIVER && 969 OpMode != MD_QUEUERUN) 970 { 971 usrerr("Can not use -Q with -b%c", OpMode); 972 ExitStat = EX_USAGE; 973 break; 974 } 975 976 if (OpMode == MD_DELIVER) 977 set_op_mode(MD_QUEUERUN); 978 979 FullName = NULL; 980 981 quarantining = newstr(optarg); 982 break; 983 984 case 'q': /* run queue files at intervals */ 985 /* sanity check */ 986 if (OpMode != MD_DELIVER && 987 OpMode != MD_DAEMON && 988 OpMode != MD_FGDAEMON && 989 OpMode != MD_PRINT && 990 OpMode != MD_PRINTNQE && 991 OpMode != MD_QUEUERUN) 992 { 993 usrerr("Can not use -q with -b%c", OpMode); 994 ExitStat = EX_USAGE; 995 break; 996 } 997 998 /* don't override -bd, -bD or -bp */ 999 if (OpMode == MD_DELIVER) 1000 set_op_mode(MD_QUEUERUN); 1001 1002 FullName = NULL; 1003 negate = optarg[0] == '!'; 1004 if (negate) 1005 { 1006 /* negate meaning of pattern match */ 1007 optarg++; /* skip '!' for next switch */ 1008 } 1009 1010 switch (optarg[0]) 1011 { 1012 case 'G': /* Limit by queue group name */ 1013 if (negate) 1014 { 1015 usrerr("Can not use -q!G"); 1016 ExitStat = EX_USAGE; 1017 break; 1018 } 1019 if (queuegroup != NULL) 1020 { 1021 usrerr("Can not use multiple -qG options"); 1022 ExitStat = EX_USAGE; 1023 break; 1024 } 1025 queuegroup = newstr(&optarg[1]); 1026 break; 1027 1028 case 'I': /* Limit by ID */ 1029 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1030 new->queue_match = newstr(&optarg[1]); 1031 new->queue_negate = negate; 1032 new->queue_next = QueueLimitId; 1033 QueueLimitId = new; 1034 break; 1035 1036 case 'R': /* Limit by recipient */ 1037 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1038 new->queue_match = newstr(&optarg[1]); 1039 new->queue_negate = negate; 1040 new->queue_next = QueueLimitRecipient; 1041 QueueLimitRecipient = new; 1042 break; 1043 1044 case 'S': /* Limit by sender */ 1045 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1046 new->queue_match = newstr(&optarg[1]); 1047 new->queue_negate = negate; 1048 new->queue_next = QueueLimitSender; 1049 QueueLimitSender = new; 1050 break; 1051 1052 case 'f': /* foreground queue run */ 1053 foregroundqueue = true; 1054 break; 1055 1056 case 'Q': /* Limit by quarantine message */ 1057 if (optarg[1] != '\0') 1058 { 1059 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1060 new->queue_match = newstr(&optarg[1]); 1061 new->queue_negate = negate; 1062 new->queue_next = QueueLimitQuarantine; 1063 QueueLimitQuarantine = new; 1064 } 1065 QueueMode = QM_QUARANTINE; 1066 break; 1067 1068 case 'L': /* act on lost items */ 1069 QueueMode = QM_LOST; 1070 break; 1071 1072 case 'p': /* Persistent queue */ 1073 queuepersistent = true; 1074 if (QueueIntvl == 0) 1075 QueueIntvl = 1; 1076 if (optarg[1] == '\0') 1077 break; 1078 ++optarg; 1079 /* FALLTHROUGH */ 1080 1081 default: 1082 i = Errors; 1083 QueueIntvl = convtime(optarg, 'm'); 1084 if (QueueIntvl < 0) 1085 { 1086 usrerr("Invalid -q value"); 1087 ExitStat = EX_USAGE; 1088 } 1089 1090 /* check for bad conversion */ 1091 if (i < Errors) 1092 ExitStat = EX_USAGE; 1093 break; 1094 } 1095 break; 1096 1097 case 'R': /* DSN RET: what to return */ 1098 CHECK_AGAINST_OPMODE(j); 1099 if (bitset(EF_RET_PARAM, BlankEnvelope.e_flags)) 1100 { 1101 usrerr("Duplicate -R flag"); 1102 ExitStat = EX_USAGE; 1103 break; 1104 } 1105 BlankEnvelope.e_flags |= EF_RET_PARAM; 1106 if (sm_strcasecmp(optarg, "hdrs") == 0) 1107 BlankEnvelope.e_flags |= EF_NO_BODY_RETN; 1108 else if (sm_strcasecmp(optarg, "full") != 0) 1109 { 1110 usrerr("Invalid -R value"); 1111 ExitStat = EX_USAGE; 1112 } 1113 macdefine(&BlankEnvelope.e_macro, A_TEMP, 1114 macid("{dsn_ret}"), optarg); 1115 break; 1116 1117 case 't': /* read recipients from message */ 1118 CHECK_AGAINST_OPMODE(j); 1119 GrabTo = true; 1120 break; 1121 1122 case 'V': /* DSN ENVID: set "original" envelope id */ 1123 CHECK_AGAINST_OPMODE(j); 1124 if (!xtextok(optarg)) 1125 { 1126 usrerr("Invalid syntax in -V flag"); 1127 ExitStat = EX_USAGE; 1128 } 1129 else 1130 { 1131 BlankEnvelope.e_envid = newstr(optarg); 1132 macdefine(&BlankEnvelope.e_macro, A_TEMP, 1133 macid("{dsn_envid}"), optarg); 1134 } 1135 break; 1136 1137 case 'X': /* traffic log file */ 1138 dp = drop_privileges(true); 1139 setstat(dp); 1140 if (stat(optarg, &traf_st) == 0 && 1141 S_ISFIFO(traf_st.st_mode)) 1142 TrafficLogFile = sm_io_open(SmFtStdio, 1143 SM_TIME_DEFAULT, 1144 optarg, 1145 SM_IO_WRONLY, NULL); 1146 else 1147 TrafficLogFile = sm_io_open(SmFtStdio, 1148 SM_TIME_DEFAULT, 1149 optarg, 1150 SM_IO_APPEND, NULL); 1151 if (TrafficLogFile == NULL) 1152 { 1153 syserr("cannot open %s", optarg); 1154 ExitStat = EX_CANTCREAT; 1155 break; 1156 } 1157 (void) sm_io_setvbuf(TrafficLogFile, SM_TIME_DEFAULT, 1158 NULL, SM_IO_LBF, 0); 1159 break; 1160 1161 /* compatibility flags */ 1162 case 'c': /* connect to non-local mailers */ 1163 case 'i': /* don't let dot stop me */ 1164 case 'm': /* send to me too */ 1165 case 'T': /* set timeout interval */ 1166 case 'v': /* give blow-by-blow description */ 1167 setoption(j, "T", false, true, &BlankEnvelope); 1168 break; 1169 1170 case 'e': /* error message disposition */ 1171 case 'M': /* define macro */ 1172 setoption(j, optarg, false, true, &BlankEnvelope); 1173 break; 1174 1175 case 's': /* save From lines in headers */ 1176 setoption('f', "T", false, true, &BlankEnvelope); 1177 break; 1178 1179 #ifdef DBM 1180 case 'I': /* initialize alias DBM file */ 1181 set_op_mode(MD_INITALIAS); 1182 break; 1183 #endif /* DBM */ 1184 1185 #if defined(__osf__) || defined(_AIX3) 1186 case 'x': /* random flag that OSF/1 & AIX mailx passes */ 1187 break; 1188 #endif /* defined(__osf__) || defined(_AIX3) */ 1189 #if defined(sony_news) 1190 case 'E': 1191 case 'J': /* ignore flags for Japanese code conversion 1192 implemented on Sony NEWS */ 1193 break; 1194 #endif /* defined(sony_news) */ 1195 1196 default: 1197 finis(true, true, EX_USAGE); 1198 /* NOTREACHED */ 1199 break; 1200 } 1201 } 1202 1203 /* if we've had errors so far, exit now */ 1204 if ((ExitStat != EX_OK && OpMode != MD_TEST) || 1205 ExitStat == EX_OSERR) 1206 { 1207 finis(false, true, ExitStat); 1208 /* NOTREACHED */ 1209 } 1210 1211 if (bitset(SUBMIT_MTA, SubmitMode)) 1212 { 1213 /* If set daemon_flags on command line, don't reset it */ 1214 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL) 1215 macdefine(&BlankEnvelope.e_macro, A_PERM, 1216 macid("{daemon_flags}"), "CC f"); 1217 } 1218 else if (OpMode == MD_DELIVER || OpMode == MD_SMTP) 1219 { 1220 SubmitMode = SUBMIT_MSA; 1221 1222 /* If set daemon_flags on command line, don't reset it */ 1223 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL) 1224 macdefine(&BlankEnvelope.e_macro, A_PERM, 1225 macid("{daemon_flags}"), "c u"); 1226 } 1227 1228 /* 1229 ** Do basic initialization. 1230 ** Read system control file. 1231 ** Extract special fields for local use. 1232 */ 1233 1234 #if XDEBUG 1235 checkfd012("before readcf"); 1236 #endif /* XDEBUG */ 1237 vendor_pre_defaults(&BlankEnvelope); 1238 1239 readcf(getcfname(OpMode, SubmitMode, cftype, conffile), 1240 safecf, &BlankEnvelope); 1241 #if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) 1242 ConfigFileRead = true; 1243 #endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */ 1244 vendor_post_defaults(&BlankEnvelope); 1245 1246 /* now we can complain about missing fds */ 1247 if (MissingFds != 0 && LogLevel > 8) 1248 { 1249 char mbuf[MAXLINE]; 1250 1251 mbuf[0] = '\0'; 1252 if (bitset(1 << STDIN_FILENO, MissingFds)) 1253 (void) sm_strlcat(mbuf, ", stdin", sizeof(mbuf)); 1254 if (bitset(1 << STDOUT_FILENO, MissingFds)) 1255 (void) sm_strlcat(mbuf, ", stdout", sizeof(mbuf)); 1256 if (bitset(1 << STDERR_FILENO, MissingFds)) 1257 (void) sm_strlcat(mbuf, ", stderr", sizeof(mbuf)); 1258 1259 /* Notice: fill_errno is from high above: fill_fd() */ 1260 sm_syslog(LOG_WARNING, NOQID, 1261 "File descriptors missing on startup: %s; %s", 1262 &mbuf[2], sm_errstring(fill_errno)); 1263 } 1264 1265 /* Remove the ability for a normal user to send signals */ 1266 if (RealUid != 0 && RealUid != geteuid()) 1267 { 1268 uid_t new_uid = geteuid(); 1269 1270 #if HASSETREUID 1271 /* 1272 ** Since we can differentiate between uid and euid, 1273 ** make the uid a different user so the real user 1274 ** can't send signals. However, it doesn't need to be 1275 ** root (euid has root). 1276 */ 1277 1278 if (new_uid == 0) 1279 new_uid = DefUid; 1280 if (tTd(47, 5)) 1281 sm_dprintf("Changing real uid to %d\n", (int) new_uid); 1282 if (setreuid(new_uid, geteuid()) < 0) 1283 { 1284 syserr("main: setreuid(%d, %d) failed", 1285 (int) new_uid, (int) geteuid()); 1286 finis(false, true, EX_OSERR); 1287 /* NOTREACHED */ 1288 } 1289 if (tTd(47, 10)) 1290 sm_dprintf("Now running as e/ruid %d:%d\n", 1291 (int) geteuid(), (int) getuid()); 1292 #else /* HASSETREUID */ 1293 /* 1294 ** Have to change both effective and real so need to 1295 ** change them both to effective to keep privs. 1296 */ 1297 1298 if (tTd(47, 5)) 1299 sm_dprintf("Changing uid to %d\n", (int) new_uid); 1300 if (setuid(new_uid) < 0) 1301 { 1302 syserr("main: setuid(%d) failed", (int) new_uid); 1303 finis(false, true, EX_OSERR); 1304 /* NOTREACHED */ 1305 } 1306 if (tTd(47, 10)) 1307 sm_dprintf("Now running as e/ruid %d:%d\n", 1308 (int) geteuid(), (int) getuid()); 1309 #endif /* HASSETREUID */ 1310 } 1311 1312 #if NAMED_BIND 1313 if (FallbackMX != NULL) 1314 (void) getfallbackmxrr(FallbackMX); 1315 #endif /* NAMED_BIND */ 1316 1317 if (SuperSafe == SAFE_INTERACTIVE && CurEnv->e_sendmode != SM_DELIVER) 1318 { 1319 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1320 "WARNING: SuperSafe=interactive should only be used with\n DeliveryMode=interactive\n"); 1321 } 1322 1323 if (UseMSP && (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON)) 1324 { 1325 usrerr("Mail submission program cannot be used as daemon"); 1326 finis(false, true, EX_USAGE); 1327 } 1328 1329 if (OpMode == MD_DELIVER || OpMode == MD_SMTP || 1330 OpMode == MD_QUEUERUN || OpMode == MD_ARPAFTP || 1331 OpMode == MD_DAEMON || OpMode == MD_FGDAEMON) 1332 makeworkgroups(); 1333 1334 /* set up the basic signal handlers */ 1335 if (sm_signal(SIGINT, SIG_IGN) != SIG_IGN) 1336 (void) sm_signal(SIGINT, intsig); 1337 (void) sm_signal(SIGTERM, intsig); 1338 1339 /* Enforce use of local time (null string overrides this) */ 1340 if (TimeZoneSpec == NULL) 1341 unsetenv("TZ"); 1342 else if (TimeZoneSpec[0] != '\0') 1343 sm_setuserenv("TZ", TimeZoneSpec); 1344 else 1345 sm_setuserenv("TZ", NULL); 1346 tzset(); 1347 1348 /* initialize mailbox database */ 1349 i = sm_mbdb_initialize(Mbdb); 1350 if (i != EX_OK) 1351 { 1352 usrerr("Can't initialize mailbox database \"%s\": %s", 1353 Mbdb, sm_strexit(i)); 1354 ExitStat = i; 1355 } 1356 1357 /* avoid denial-of-service attacks */ 1358 resetlimits(); 1359 1360 if (OpMode == MD_TEST) 1361 { 1362 /* can't be done after readcf if RunAs* is used */ 1363 dp = drop_privileges(true); 1364 if (dp != EX_OK) 1365 { 1366 finis(false, true, dp); 1367 /* NOTREACHED */ 1368 } 1369 } 1370 else if (OpMode != MD_DAEMON && OpMode != MD_FGDAEMON) 1371 { 1372 /* drop privileges -- daemon mode done after socket/bind */ 1373 dp = drop_privileges(false); 1374 setstat(dp); 1375 if (dp == EX_OK && UseMSP && (geteuid() == 0 || getuid() == 0)) 1376 { 1377 usrerr("Mail submission program must have RunAsUser set to non root user"); 1378 finis(false, true, EX_CONFIG); 1379 /* NOTREACHED */ 1380 } 1381 } 1382 1383 #if NAMED_BIND 1384 _res.retry = TimeOuts.res_retry[RES_TO_DEFAULT]; 1385 _res.retrans = TimeOuts.res_retrans[RES_TO_DEFAULT]; 1386 #endif /* NAMED_BIND */ 1387 1388 /* 1389 ** Find our real host name for future logging. 1390 */ 1391 1392 authinfo = getauthinfo(STDIN_FILENO, &forged); 1393 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 1394 1395 /* suppress error printing if errors mailed back or whatever */ 1396 if (BlankEnvelope.e_errormode != EM_PRINT) 1397 HoldErrs = true; 1398 1399 /* set up the $=m class now, after .cf has a chance to redefine $m */ 1400 expand("\201m", jbuf, sizeof(jbuf), &BlankEnvelope); 1401 if (jbuf[0] != '\0') 1402 setclass('m', jbuf); 1403 1404 /* probe interfaces and locate any additional names */ 1405 if (DontProbeInterfaces != DPI_PROBENONE) 1406 load_if_names(); 1407 1408 if (tTd(0, 10)) 1409 { 1410 char pidpath[MAXPATHLEN]; 1411 1412 /* Now we know which .cf file we use */ 1413 sm_dprintf(" Conf file:\t%s (selected)\n", 1414 getcfname(OpMode, SubmitMode, cftype, conffile)); 1415 expand(PidFile, pidpath, sizeof(pidpath), &BlankEnvelope); 1416 sm_dprintf(" Pid file:\t%s (selected)\n", pidpath); 1417 } 1418 1419 if (tTd(0, 1)) 1420 { 1421 sm_dprintf("\n============ SYSTEM IDENTITY (after readcf) ============"); 1422 sm_dprintf("\n (short domain name) $w = "); 1423 xputs(sm_debug_file(), macvalue('w', &BlankEnvelope)); 1424 sm_dprintf("\n (canonical domain name) $j = "); 1425 xputs(sm_debug_file(), macvalue('j', &BlankEnvelope)); 1426 sm_dprintf("\n (subdomain name) $m = "); 1427 xputs(sm_debug_file(), macvalue('m', &BlankEnvelope)); 1428 sm_dprintf("\n (node name) $k = "); 1429 xputs(sm_debug_file(), macvalue('k', &BlankEnvelope)); 1430 sm_dprintf("\n========================================================\n\n"); 1431 } 1432 1433 /* 1434 ** Do more command line checking -- these are things that 1435 ** have to modify the results of reading the config file. 1436 */ 1437 1438 /* process authorization warnings from command line */ 1439 if (warn_C_flag) 1440 auth_warning(&BlankEnvelope, "Processed by %s with -C %s", 1441 RealUserName, conffile); 1442 if (Warn_Q_option && !wordinclass(RealUserName, 't')) 1443 auth_warning(&BlankEnvelope, "Processed from queue %s", 1444 QueueDir); 1445 if (sysloglabel != NULL && !wordinclass(RealUserName, 't') && 1446 RealUid != 0 && RealUid != TrustedUid && LogLevel > 1) 1447 sm_syslog(LOG_WARNING, NOQID, "user %d changed syslog label", 1448 (int) RealUid); 1449 1450 /* check body type for legality */ 1451 i = check_bodytype(BlankEnvelope.e_bodytype); 1452 if (i == BODYTYPE_ILLEGAL) 1453 { 1454 usrerr("Illegal body type %s", BlankEnvelope.e_bodytype); 1455 BlankEnvelope.e_bodytype = NULL; 1456 } 1457 else if (i != BODYTYPE_NONE) 1458 SevenBitInput = (i == BODYTYPE_7BIT); 1459 1460 /* tweak default DSN notifications */ 1461 if (DefaultNotify == 0) 1462 DefaultNotify = QPINGONFAILURE|QPINGONDELAY; 1463 1464 /* check for sane configuration level */ 1465 if (ConfigLevel > MAXCONFIGLEVEL) 1466 { 1467 syserr("Warning: .cf version level (%d) exceeds sendmail version %s functionality (%d)", 1468 ConfigLevel, Version, MAXCONFIGLEVEL); 1469 } 1470 1471 /* need MCI cache to have persistence */ 1472 if (HostStatDir != NULL && MaxMciCache == 0) 1473 { 1474 HostStatDir = NULL; 1475 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1476 "Warning: HostStatusDirectory disabled with ConnectionCacheSize = 0\n"); 1477 } 1478 1479 /* need HostStatusDir in order to have SingleThreadDelivery */ 1480 if (SingleThreadDelivery && HostStatDir == NULL) 1481 { 1482 SingleThreadDelivery = false; 1483 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1484 "Warning: HostStatusDirectory required for SingleThreadDelivery\n"); 1485 } 1486 1487 #if _FFR_MEMSTAT 1488 j = sm_memstat_open(); 1489 if (j < 0 && (RefuseLowMem > 0 || QueueLowMem > 0) && LogLevel > 4) 1490 { 1491 sm_syslog(LOG_WARNING, NOQID, 1492 "cannot get memory statistics, settings ignored, error=%d" 1493 , j); 1494 } 1495 #endif /* _FFR_MEMSTAT */ 1496 1497 /* check for permissions */ 1498 if (RealUid != 0 && 1499 RealUid != TrustedUid) 1500 { 1501 char *action = NULL; 1502 1503 switch (OpMode) 1504 { 1505 case MD_QUEUERUN: 1506 if (quarantining != NULL) 1507 action = "quarantine jobs"; 1508 else 1509 { 1510 /* Normal users can do a single queue run */ 1511 if (QueueIntvl == 0) 1512 break; 1513 } 1514 1515 /* but not persistent queue runners */ 1516 if (action == NULL) 1517 action = "start a queue runner daemon"; 1518 /* FALLTHROUGH */ 1519 1520 case MD_PURGESTAT: 1521 if (action == NULL) 1522 action = "purge host status"; 1523 /* FALLTHROUGH */ 1524 1525 case MD_DAEMON: 1526 case MD_FGDAEMON: 1527 if (action == NULL) 1528 action = "run daemon"; 1529 1530 if (tTd(65, 1)) 1531 sm_dprintf("Deny user %d attempt to %s\n", 1532 (int) RealUid, action); 1533 1534 if (LogLevel > 1) 1535 sm_syslog(LOG_ALERT, NOQID, 1536 "user %d attempted to %s", 1537 (int) RealUid, action); 1538 HoldErrs = false; 1539 usrerr("Permission denied (real uid not trusted)"); 1540 finis(false, true, EX_USAGE); 1541 /* NOTREACHED */ 1542 break; 1543 1544 case MD_VERIFY: 1545 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags)) 1546 { 1547 /* 1548 ** If -bv and RestrictExpand, 1549 ** drop privs to prevent normal 1550 ** users from reading private 1551 ** aliases/forwards/:include:s 1552 */ 1553 1554 if (tTd(65, 1)) 1555 sm_dprintf("Drop privs for user %d attempt to expand (RestrictExpand)\n", 1556 (int) RealUid); 1557 1558 dp = drop_privileges(true); 1559 1560 /* Fake address safety */ 1561 if (tTd(65, 1)) 1562 sm_dprintf("Faking DontBlameSendmail=NonRootSafeAddr\n"); 1563 setbitn(DBS_NONROOTSAFEADDR, DontBlameSendmail); 1564 1565 if (dp != EX_OK) 1566 { 1567 if (tTd(65, 1)) 1568 sm_dprintf("Failed to drop privs for user %d attempt to expand, exiting\n", 1569 (int) RealUid); 1570 CurEnv->e_id = NULL; 1571 finis(true, true, dp); 1572 /* NOTREACHED */ 1573 } 1574 } 1575 break; 1576 1577 case MD_TEST: 1578 case MD_PRINT: 1579 case MD_PRINTNQE: 1580 case MD_FREEZE: 1581 case MD_HOSTSTAT: 1582 /* Nothing special to check */ 1583 break; 1584 1585 case MD_INITALIAS: 1586 if (!wordinclass(RealUserName, 't')) 1587 { 1588 if (tTd(65, 1)) 1589 sm_dprintf("Deny user %d attempt to rebuild the alias map\n", 1590 (int) RealUid); 1591 if (LogLevel > 1) 1592 sm_syslog(LOG_ALERT, NOQID, 1593 "user %d attempted to rebuild the alias map", 1594 (int) RealUid); 1595 HoldErrs = false; 1596 usrerr("Permission denied (real uid not trusted)"); 1597 finis(false, true, EX_USAGE); 1598 /* NOTREACHED */ 1599 } 1600 if (UseMSP) 1601 { 1602 HoldErrs = false; 1603 usrerr("User %d cannot rebuild aliases in mail submission program", 1604 (int) RealUid); 1605 finis(false, true, EX_USAGE); 1606 /* NOTREACHED */ 1607 } 1608 /* FALLTHROUGH */ 1609 1610 default: 1611 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags) && 1612 Verbose != 0) 1613 { 1614 /* 1615 ** If -v and RestrictExpand, reset 1616 ** Verbose to prevent normal users 1617 ** from seeing the expansion of 1618 ** aliases/forwards/:include:s 1619 */ 1620 1621 if (tTd(65, 1)) 1622 sm_dprintf("Dropping verbosity for user %d (RestrictExpand)\n", 1623 (int) RealUid); 1624 Verbose = 0; 1625 } 1626 break; 1627 } 1628 } 1629 1630 if (MeToo) 1631 BlankEnvelope.e_flags |= EF_METOO; 1632 1633 switch (OpMode) 1634 { 1635 case MD_TEST: 1636 /* don't have persistent host status in test mode */ 1637 HostStatDir = NULL; 1638 if (Verbose == 0) 1639 Verbose = 2; 1640 BlankEnvelope.e_errormode = EM_PRINT; 1641 HoldErrs = false; 1642 break; 1643 1644 case MD_VERIFY: 1645 BlankEnvelope.e_errormode = EM_PRINT; 1646 HoldErrs = false; 1647 /* arrange to exit cleanly on hangup signal */ 1648 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL) 1649 (void) sm_signal(SIGHUP, intsig); 1650 if (geteuid() != 0) 1651 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1652 "Notice: -bv may give misleading output for non-privileged user\n"); 1653 break; 1654 1655 case MD_FGDAEMON: 1656 run_in_foreground = true; 1657 set_op_mode(MD_DAEMON); 1658 /* FALLTHROUGH */ 1659 1660 case MD_DAEMON: 1661 vendor_daemon_setup(&BlankEnvelope); 1662 1663 /* remove things that don't make sense in daemon mode */ 1664 FullName = NULL; 1665 GrabTo = false; 1666 1667 /* arrange to restart on hangup signal */ 1668 if (SaveArgv[0] == NULL || SaveArgv[0][0] != '/') 1669 sm_syslog(LOG_WARNING, NOQID, 1670 "daemon invoked without full pathname; kill -1 won't work"); 1671 break; 1672 1673 case MD_INITALIAS: 1674 Verbose = 2; 1675 BlankEnvelope.e_errormode = EM_PRINT; 1676 HoldErrs = false; 1677 /* FALLTHROUGH */ 1678 1679 default: 1680 /* arrange to exit cleanly on hangup signal */ 1681 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL) 1682 (void) sm_signal(SIGHUP, intsig); 1683 break; 1684 } 1685 1686 /* special considerations for FullName */ 1687 if (FullName != NULL) 1688 { 1689 char *full = NULL; 1690 1691 /* full names can't have newlines */ 1692 if (strchr(FullName, '\n') != NULL) 1693 { 1694 full = newstr(denlstring(FullName, true, true)); 1695 FullName = full; 1696 } 1697 1698 /* check for characters that may have to be quoted */ 1699 if (!rfc822_string(FullName)) 1700 { 1701 /* 1702 ** Quote a full name with special characters 1703 ** as a comment so crackaddr() doesn't destroy 1704 ** the name portion of the address. 1705 */ 1706 1707 FullName = addquotes(FullName, NULL); 1708 if (full != NULL) 1709 sm_free(full); /* XXX */ 1710 } 1711 } 1712 1713 /* do heuristic mode adjustment */ 1714 if (Verbose) 1715 { 1716 /* turn off noconnect option */ 1717 setoption('c', "F", true, false, &BlankEnvelope); 1718 1719 /* turn on interactive delivery */ 1720 setoption('d', "", true, false, &BlankEnvelope); 1721 } 1722 1723 #ifdef VENDOR_CODE 1724 /* check for vendor mismatch */ 1725 if (VendorCode != VENDOR_CODE) 1726 { 1727 message("Warning: .cf file vendor code mismatch: sendmail expects vendor %s, .cf file vendor is %s", 1728 getvendor(VENDOR_CODE), getvendor(VendorCode)); 1729 } 1730 #endif /* VENDOR_CODE */ 1731 1732 /* check for out of date configuration level */ 1733 if (ConfigLevel < MAXCONFIGLEVEL) 1734 { 1735 message("Warning: .cf file is out of date: sendmail %s supports version %d, .cf file is version %d", 1736 Version, MAXCONFIGLEVEL, ConfigLevel); 1737 } 1738 1739 if (ConfigLevel < 3) 1740 UseErrorsTo = true; 1741 1742 /* set options that were previous macros */ 1743 if (SmtpGreeting == NULL) 1744 { 1745 if (ConfigLevel < 7 && 1746 (p = macvalue('e', &BlankEnvelope)) != NULL) 1747 SmtpGreeting = newstr(p); 1748 else 1749 SmtpGreeting = "\201j Sendmail \201v ready at \201b"; 1750 } 1751 if (UnixFromLine == NULL) 1752 { 1753 if (ConfigLevel < 7 && 1754 (p = macvalue('l', &BlankEnvelope)) != NULL) 1755 UnixFromLine = newstr(p); 1756 else 1757 UnixFromLine = "From \201g \201d"; 1758 } 1759 SmtpError[0] = '\0'; 1760 1761 /* our name for SMTP codes */ 1762 expand("\201j", jbuf, sizeof(jbuf), &BlankEnvelope); 1763 if (jbuf[0] == '\0') 1764 PSTRSET(MyHostName, "localhost"); 1765 else 1766 PSTRSET(MyHostName, jbuf); 1767 if (strchr(MyHostName, '.') == NULL) 1768 message("WARNING: local host name (%s) is not qualified; see cf/README: WHO AM I?", 1769 MyHostName); 1770 1771 /* make certain that this name is part of the $=w class */ 1772 setclass('w', MyHostName); 1773 1774 /* fill in the structure of the *default* queue */ 1775 st = stab("mqueue", ST_QUEUE, ST_FIND); 1776 if (st == NULL) 1777 syserr("No default queue (mqueue) defined"); 1778 else 1779 set_def_queueval(st->s_quegrp, true); 1780 1781 /* the indices of built-in mailers */ 1782 st = stab("local", ST_MAILER, ST_FIND); 1783 if (st != NULL) 1784 LocalMailer = st->s_mailer; 1785 else if (OpMode != MD_TEST || !warn_C_flag) 1786 syserr("No local mailer defined"); 1787 1788 st = stab("prog", ST_MAILER, ST_FIND); 1789 if (st == NULL) 1790 syserr("No prog mailer defined"); 1791 else 1792 { 1793 ProgMailer = st->s_mailer; 1794 clrbitn(M_MUSER, ProgMailer->m_flags); 1795 } 1796 1797 st = stab("*file*", ST_MAILER, ST_FIND); 1798 if (st == NULL) 1799 syserr("No *file* mailer defined"); 1800 else 1801 { 1802 FileMailer = st->s_mailer; 1803 clrbitn(M_MUSER, FileMailer->m_flags); 1804 } 1805 1806 st = stab("*include*", ST_MAILER, ST_FIND); 1807 if (st == NULL) 1808 syserr("No *include* mailer defined"); 1809 else 1810 InclMailer = st->s_mailer; 1811 1812 if (ConfigLevel < 6) 1813 { 1814 /* heuristic tweaking of local mailer for back compat */ 1815 if (LocalMailer != NULL) 1816 { 1817 setbitn(M_ALIASABLE, LocalMailer->m_flags); 1818 setbitn(M_HASPWENT, LocalMailer->m_flags); 1819 setbitn(M_TRYRULESET5, LocalMailer->m_flags); 1820 setbitn(M_CHECKINCLUDE, LocalMailer->m_flags); 1821 setbitn(M_CHECKPROG, LocalMailer->m_flags); 1822 setbitn(M_CHECKFILE, LocalMailer->m_flags); 1823 setbitn(M_CHECKUDB, LocalMailer->m_flags); 1824 } 1825 if (ProgMailer != NULL) 1826 setbitn(M_RUNASRCPT, ProgMailer->m_flags); 1827 if (FileMailer != NULL) 1828 setbitn(M_RUNASRCPT, FileMailer->m_flags); 1829 } 1830 if (ConfigLevel < 7) 1831 { 1832 if (LocalMailer != NULL) 1833 setbitn(M_VRFY250, LocalMailer->m_flags); 1834 if (ProgMailer != NULL) 1835 setbitn(M_VRFY250, ProgMailer->m_flags); 1836 if (FileMailer != NULL) 1837 setbitn(M_VRFY250, FileMailer->m_flags); 1838 } 1839 1840 /* MIME Content-Types that cannot be transfer encoded */ 1841 setclass('n', "multipart/signed"); 1842 1843 /* MIME message/xxx subtypes that can be treated as messages */ 1844 setclass('s', "rfc822"); 1845 1846 /* MIME Content-Transfer-Encodings that can be encoded */ 1847 setclass('e', "7bit"); 1848 setclass('e', "8bit"); 1849 setclass('e', "binary"); 1850 1851 #ifdef USE_B_CLASS 1852 /* MIME Content-Types that should be treated as binary */ 1853 setclass('b', "image"); 1854 setclass('b', "audio"); 1855 setclass('b', "video"); 1856 setclass('b', "application/octet-stream"); 1857 #endif /* USE_B_CLASS */ 1858 1859 /* MIME headers which have fields to check for overflow */ 1860 setclass(macid("{checkMIMEFieldHeaders}"), "content-disposition"); 1861 setclass(macid("{checkMIMEFieldHeaders}"), "content-type"); 1862 1863 /* MIME headers to check for length overflow */ 1864 setclass(macid("{checkMIMETextHeaders}"), "content-description"); 1865 1866 /* MIME headers to check for overflow and rebalance */ 1867 setclass(macid("{checkMIMEHeaders}"), "content-disposition"); 1868 setclass(macid("{checkMIMEHeaders}"), "content-id"); 1869 setclass(macid("{checkMIMEHeaders}"), "content-transfer-encoding"); 1870 setclass(macid("{checkMIMEHeaders}"), "content-type"); 1871 setclass(macid("{checkMIMEHeaders}"), "mime-version"); 1872 1873 /* Macros to save in the queue file -- don't remove any */ 1874 setclass(macid("{persistentMacros}"), "r"); 1875 setclass(macid("{persistentMacros}"), "s"); 1876 setclass(macid("{persistentMacros}"), "_"); 1877 setclass(macid("{persistentMacros}"), "{if_addr}"); 1878 setclass(macid("{persistentMacros}"), "{daemon_flags}"); 1879 1880 /* operate in queue directory */ 1881 if (QueueDir == NULL || *QueueDir == '\0') 1882 { 1883 if (OpMode != MD_TEST) 1884 { 1885 syserr("QueueDirectory (Q) option must be set"); 1886 ExitStat = EX_CONFIG; 1887 } 1888 } 1889 else 1890 { 1891 if (OpMode != MD_TEST) 1892 setup_queues(OpMode == MD_DAEMON); 1893 } 1894 1895 /* check host status directory for validity */ 1896 if (HostStatDir != NULL && !path_is_dir(HostStatDir, false)) 1897 { 1898 /* cannot use this value */ 1899 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1900 "Warning: Cannot use HostStatusDirectory = %s: %s\n", 1901 HostStatDir, sm_errstring(errno)); 1902 HostStatDir = NULL; 1903 } 1904 1905 if (OpMode == MD_QUEUERUN && 1906 RealUid != 0 && bitset(PRIV_RESTRICTQRUN, PrivacyFlags)) 1907 { 1908 struct stat stbuf; 1909 1910 /* check to see if we own the queue directory */ 1911 if (stat(".", &stbuf) < 0) 1912 syserr("main: cannot stat %s", QueueDir); 1913 if (stbuf.st_uid != RealUid) 1914 { 1915 /* nope, really a botch */ 1916 HoldErrs = false; 1917 usrerr("You do not have permission to process the queue"); 1918 finis(false, true, EX_NOPERM); 1919 /* NOTREACHED */ 1920 } 1921 } 1922 1923 #if MILTER 1924 /* sanity checks on milter filters */ 1925 if (OpMode == MD_DAEMON || OpMode == MD_SMTP) 1926 { 1927 milter_config(InputFilterList, InputFilters, MAXFILTERS); 1928 setup_daemon_milters(); 1929 } 1930 #endif /* MILTER */ 1931 1932 /* Convert queuegroup string to qgrp number */ 1933 if (queuegroup != NULL) 1934 { 1935 qgrp = name2qid(queuegroup); 1936 if (qgrp == NOQGRP) 1937 { 1938 HoldErrs = false; 1939 usrerr("Queue group %s unknown", queuegroup); 1940 finis(false, true, ExitStat); 1941 /* NOTREACHED */ 1942 } 1943 } 1944 1945 /* if we've had errors so far, exit now */ 1946 if (ExitStat != EX_OK && OpMode != MD_TEST) 1947 { 1948 finis(false, true, ExitStat); 1949 /* NOTREACHED */ 1950 } 1951 1952 #if SASL 1953 /* sendmail specific SASL initialization */ 1954 sm_sasl_init(); 1955 #endif /* SASL */ 1956 1957 #if XDEBUG 1958 checkfd012("before main() initmaps"); 1959 #endif /* XDEBUG */ 1960 1961 /* 1962 ** Do operation-mode-dependent initialization. 1963 */ 1964 1965 switch (OpMode) 1966 { 1967 case MD_PRINT: 1968 /* print the queue */ 1969 HoldErrs = false; 1970 dropenvelope(&BlankEnvelope, true, false); 1971 (void) sm_signal(SIGPIPE, sigpipe); 1972 if (qgrp != NOQGRP) 1973 { 1974 int j; 1975 1976 /* Selecting a particular queue group to run */ 1977 for (j = 0; j < Queue[qgrp]->qg_numqueues; j++) 1978 { 1979 if (StopRequest) 1980 stop_sendmail(); 1981 (void) print_single_queue(qgrp, j); 1982 } 1983 finis(false, true, EX_OK); 1984 /* NOTREACHED */ 1985 } 1986 printqueue(); 1987 finis(false, true, EX_OK); 1988 /* NOTREACHED */ 1989 break; 1990 1991 case MD_PRINTNQE: 1992 /* print number of entries in queue */ 1993 dropenvelope(&BlankEnvelope, true, false); 1994 (void) sm_signal(SIGPIPE, sigpipe); 1995 printnqe(smioout, NULL); 1996 finis(false, true, EX_OK); 1997 /* NOTREACHED */ 1998 break; 1999 2000 case MD_QUEUERUN: 2001 /* only handle quarantining here */ 2002 if (quarantining == NULL) 2003 break; 2004 2005 if (QueueMode != QM_QUARANTINE && 2006 QueueMode != QM_NORMAL) 2007 { 2008 HoldErrs = false; 2009 usrerr("Can not use -Q with -q%c", QueueMode); 2010 ExitStat = EX_USAGE; 2011 finis(false, true, ExitStat); 2012 /* NOTREACHED */ 2013 } 2014 quarantine_queue(quarantining, qgrp); 2015 finis(false, true, EX_OK); 2016 break; 2017 2018 case MD_HOSTSTAT: 2019 (void) sm_signal(SIGPIPE, sigpipe); 2020 (void) mci_traverse_persistent(mci_print_persistent, NULL); 2021 finis(false, true, EX_OK); 2022 /* NOTREACHED */ 2023 break; 2024 2025 case MD_PURGESTAT: 2026 (void) mci_traverse_persistent(mci_purge_persistent, NULL); 2027 finis(false, true, EX_OK); 2028 /* NOTREACHED */ 2029 break; 2030 2031 case MD_INITALIAS: 2032 /* initialize maps */ 2033 initmaps(); 2034 finis(false, true, ExitStat); 2035 /* NOTREACHED */ 2036 break; 2037 2038 case MD_SMTP: 2039 case MD_DAEMON: 2040 /* reset DSN parameters */ 2041 DefaultNotify = QPINGONFAILURE|QPINGONDELAY; 2042 macdefine(&BlankEnvelope.e_macro, A_PERM, 2043 macid("{dsn_notify}"), NULL); 2044 BlankEnvelope.e_envid = NULL; 2045 macdefine(&BlankEnvelope.e_macro, A_PERM, 2046 macid("{dsn_envid}"), NULL); 2047 BlankEnvelope.e_flags &= ~(EF_RET_PARAM|EF_NO_BODY_RETN); 2048 macdefine(&BlankEnvelope.e_macro, A_PERM, 2049 macid("{dsn_ret}"), NULL); 2050 2051 /* don't open maps for daemon -- done below in child */ 2052 break; 2053 } 2054 2055 if (tTd(0, 15)) 2056 { 2057 /* print configuration table (or at least part of it) */ 2058 if (tTd(0, 90)) 2059 printrules(); 2060 for (i = 0; i < MAXMAILERS; i++) 2061 { 2062 if (Mailer[i] != NULL) 2063 printmailer(sm_debug_file(), Mailer[i]); 2064 } 2065 } 2066 2067 /* 2068 ** Switch to the main envelope. 2069 */ 2070 2071 CurEnv = newenvelope(&MainEnvelope, &BlankEnvelope, 2072 sm_rpool_new_x(NULL)); 2073 MainEnvelope.e_flags = BlankEnvelope.e_flags; 2074 2075 /* 2076 ** If test mode, read addresses from stdin and process. 2077 */ 2078 2079 if (OpMode == MD_TEST) 2080 { 2081 if (isatty(sm_io_getinfo(smioin, SM_IO_WHAT_FD, NULL))) 2082 Verbose = 2; 2083 2084 if (Verbose) 2085 { 2086 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2087 "ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n"); 2088 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2089 "Enter <ruleset> <address>\n"); 2090 } 2091 macdefine(&(MainEnvelope.e_macro), A_PERM, 2092 macid("{addr_type}"), "e r"); 2093 for (;;) 2094 { 2095 SM_TRY 2096 { 2097 (void) sm_signal(SIGINT, intindebug); 2098 (void) sm_releasesignal(SIGINT); 2099 if (Verbose == 2) 2100 (void) sm_io_fprintf(smioout, 2101 SM_TIME_DEFAULT, 2102 "> "); 2103 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 2104 if (sm_io_fgets(smioin, SM_TIME_DEFAULT, buf, 2105 sizeof(buf)) == NULL) 2106 testmodeline("/quit", &MainEnvelope); 2107 p = strchr(buf, '\n'); 2108 if (p != NULL) 2109 *p = '\0'; 2110 if (Verbose < 2) 2111 (void) sm_io_fprintf(smioout, 2112 SM_TIME_DEFAULT, 2113 "> %s\n", buf); 2114 testmodeline(buf, &MainEnvelope); 2115 } 2116 SM_EXCEPT(exc, "[!F]*") 2117 { 2118 /* 2119 ** 8.10 just prints \n on interrupt. 2120 ** I'm printing the exception here in case 2121 ** sendmail is extended to raise additional 2122 ** exceptions in this context. 2123 */ 2124 2125 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2126 "\n"); 2127 sm_exc_print(exc, smioout); 2128 } 2129 SM_END_TRY 2130 } 2131 } 2132 2133 #if STARTTLS 2134 tls_ok = true; 2135 if (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER || 2136 OpMode == MD_ARPAFTP) 2137 { 2138 /* check whether STARTTLS is turned off for the client */ 2139 if (chkclientmodifiers(D_NOTLS)) 2140 tls_ok = false; 2141 } 2142 else if (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON || 2143 OpMode == MD_SMTP) 2144 { 2145 /* check whether STARTTLS is turned off for the server */ 2146 if (chkdaemonmodifiers(D_NOTLS)) 2147 tls_ok = false; 2148 } 2149 else /* other modes don't need STARTTLS */ 2150 tls_ok = false; 2151 2152 if (tls_ok) 2153 { 2154 /* basic TLS initialization */ 2155 tls_ok = init_tls_library(); 2156 } 2157 2158 if (!tls_ok && (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER)) 2159 { 2160 /* disable TLS for client */ 2161 setclttls(false); 2162 } 2163 #endif /* STARTTLS */ 2164 2165 /* 2166 ** If collecting stuff from the queue, go start doing that. 2167 */ 2168 2169 if (OpMode == MD_QUEUERUN && QueueIntvl == 0) 2170 { 2171 pid_t pid = -1; 2172 2173 #if STARTTLS 2174 /* init TLS for client, ignore result for now */ 2175 (void) initclttls(tls_ok); 2176 #endif /* STARTTLS */ 2177 2178 /* 2179 ** The parent process of the caller of runqueue() needs 2180 ** to stay around for a possible SIGTERM. The SIGTERM will 2181 ** tell this process that all of the queue runners children 2182 ** need to be sent SIGTERM as well. At the same time, we 2183 ** want to return control to the command line. So we do an 2184 ** extra fork(). 2185 */ 2186 2187 if (Verbose || foregroundqueue || (pid = fork()) <= 0) 2188 { 2189 /* 2190 ** If the fork() failed we should still try to do 2191 ** the queue run. If it succeeded then the child 2192 ** is going to start the run and wait for all 2193 ** of the children to finish. 2194 */ 2195 2196 if (pid == 0) 2197 { 2198 /* Reset global flags */ 2199 RestartRequest = NULL; 2200 ShutdownRequest = NULL; 2201 PendingSignal = 0; 2202 2203 /* disconnect from terminal */ 2204 disconnect(2, CurEnv); 2205 } 2206 2207 CurrentPid = getpid(); 2208 if (qgrp != NOQGRP) 2209 { 2210 int rwgflags = RWG_NONE; 2211 2212 /* 2213 ** To run a specific queue group mark it to 2214 ** be run, select the work group it's in and 2215 ** increment the work counter. 2216 */ 2217 2218 for (i = 0; i < NumQueue && Queue[i] != NULL; 2219 i++) 2220 Queue[i]->qg_nextrun = (time_t) -1; 2221 Queue[qgrp]->qg_nextrun = 0; 2222 if (Verbose) 2223 rwgflags |= RWG_VERBOSE; 2224 if (queuepersistent) 2225 rwgflags |= RWG_PERSISTENT; 2226 rwgflags |= RWG_FORCE; 2227 (void) run_work_group(Queue[qgrp]->qg_wgrp, 2228 rwgflags); 2229 } 2230 else 2231 (void) runqueue(false, Verbose, 2232 queuepersistent, true); 2233 2234 /* set the title to make it easier to find */ 2235 sm_setproctitle(true, CurEnv, "Queue control"); 2236 (void) sm_signal(SIGCHLD, SIG_DFL); 2237 while (CurChildren > 0) 2238 { 2239 int status; 2240 pid_t ret; 2241 2242 errno = 0; 2243 while ((ret = sm_wait(&status)) <= 0) 2244 { 2245 if (errno == ECHILD) 2246 { 2247 /* 2248 ** Oops... something got messed 2249 ** up really bad. Waiting for 2250 ** non-existent children 2251 ** shouldn't happen. Let's get 2252 ** out of here. 2253 */ 2254 2255 CurChildren = 0; 2256 break; 2257 } 2258 continue; 2259 } 2260 2261 /* something is really really wrong */ 2262 if (errno == ECHILD) 2263 { 2264 sm_syslog(LOG_ERR, NOQID, 2265 "queue control process: lost all children: wait returned ECHILD"); 2266 break; 2267 } 2268 2269 /* Only drop when a child gives status */ 2270 if (WIFSTOPPED(status)) 2271 continue; 2272 2273 proc_list_drop(ret, status, NULL); 2274 } 2275 } 2276 finis(true, true, ExitStat); 2277 /* NOTREACHED */ 2278 } 2279 2280 # if SASL 2281 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2282 { 2283 /* check whether AUTH is turned off for the server */ 2284 if (!chkdaemonmodifiers(D_NOAUTH) && 2285 (i = sasl_server_init(srvcallbacks, "Sendmail")) != SASL_OK) 2286 syserr("!sasl_server_init failed! [%s]", 2287 sasl_errstring(i, NULL, NULL)); 2288 } 2289 # endif /* SASL */ 2290 2291 if (OpMode == MD_SMTP) 2292 { 2293 proc_list_add(CurrentPid, "Sendmail SMTP Agent", 2294 PROC_DAEMON, 0, -1, NULL); 2295 2296 /* clean up background delivery children */ 2297 (void) sm_signal(SIGCHLD, reapchild); 2298 } 2299 2300 /* 2301 ** If a daemon, wait for a request. 2302 ** getrequests will always return in a child. 2303 ** If we should also be processing the queue, start 2304 ** doing it in background. 2305 ** We check for any errors that might have happened 2306 ** during startup. 2307 */ 2308 2309 if (OpMode == MD_DAEMON || QueueIntvl > 0) 2310 { 2311 char dtype[200]; 2312 2313 /* avoid cleanup in finis(), DaemonPid will be set below */ 2314 DaemonPid = 0; 2315 if (!run_in_foreground && !tTd(99, 100)) 2316 { 2317 /* put us in background */ 2318 i = fork(); 2319 if (i < 0) 2320 syserr("daemon: cannot fork"); 2321 if (i != 0) 2322 { 2323 finis(false, true, EX_OK); 2324 /* NOTREACHED */ 2325 } 2326 2327 /* 2328 ** Initialize exception stack and default exception 2329 ** handler for child process. 2330 */ 2331 2332 /* Reset global flags */ 2333 RestartRequest = NULL; 2334 RestartWorkGroup = false; 2335 ShutdownRequest = NULL; 2336 PendingSignal = 0; 2337 CurrentPid = getpid(); 2338 2339 sm_exc_newthread(fatal_error); 2340 2341 /* disconnect from our controlling tty */ 2342 disconnect(2, &MainEnvelope); 2343 } 2344 2345 dtype[0] = '\0'; 2346 if (OpMode == MD_DAEMON) 2347 { 2348 (void) sm_strlcat(dtype, "+SMTP", sizeof(dtype)); 2349 DaemonPid = CurrentPid; 2350 } 2351 if (QueueIntvl > 0) 2352 { 2353 (void) sm_strlcat2(dtype, 2354 queuepersistent 2355 ? "+persistent-queueing@" 2356 : "+queueing@", 2357 pintvl(QueueIntvl, true), 2358 sizeof(dtype)); 2359 } 2360 if (tTd(0, 1)) 2361 (void) sm_strlcat(dtype, "+debugging", sizeof(dtype)); 2362 2363 sm_syslog(LOG_INFO, NOQID, 2364 "starting daemon (%s): %s", Version, dtype + 1); 2365 #if XLA 2366 xla_create_file(); 2367 #endif /* XLA */ 2368 2369 /* save daemon type in a macro for possible PidFile use */ 2370 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2371 macid("{daemon_info}"), dtype + 1); 2372 2373 /* save queue interval in a macro for possible PidFile use */ 2374 macdefine(&MainEnvelope.e_macro, A_TEMP, 2375 macid("{queue_interval}"), pintvl(QueueIntvl, true)); 2376 2377 /* workaround: can't seem to release the signal in the parent */ 2378 (void) sm_signal(SIGHUP, sighup); 2379 (void) sm_releasesignal(SIGHUP); 2380 (void) sm_signal(SIGTERM, sigterm); 2381 2382 if (QueueIntvl > 0) 2383 { 2384 #if _FFR_RUNPQG 2385 if (qgrp != NOQGRP) 2386 { 2387 int rwgflags = RWG_NONE; 2388 2389 /* 2390 ** To run a specific queue group mark it to 2391 ** be run, select the work group it's in and 2392 ** increment the work counter. 2393 */ 2394 2395 for (i = 0; i < NumQueue && Queue[i] != NULL; 2396 i++) 2397 Queue[i]->qg_nextrun = (time_t) -1; 2398 Queue[qgrp]->qg_nextrun = 0; 2399 if (Verbose) 2400 rwgflags |= RWG_VERBOSE; 2401 if (queuepersistent) 2402 rwgflags |= RWG_PERSISTENT; 2403 rwgflags |= RWG_FORCE; 2404 (void) run_work_group(Queue[qgrp]->qg_wgrp, 2405 rwgflags); 2406 } 2407 else 2408 #endif /* _FFR_RUNPQG */ 2409 (void) runqueue(true, false, queuepersistent, 2410 true); 2411 2412 /* 2413 ** If queuepersistent but not in daemon mode then 2414 ** we're going to do the queue runner monitoring here. 2415 ** If in daemon mode then the monitoring will happen 2416 ** elsewhere. 2417 */ 2418 2419 if (OpMode != MD_DAEMON && queuepersistent) 2420 { 2421 /* 2422 ** Write the pid to file 2423 ** XXX Overwrites sendmail.pid 2424 */ 2425 2426 log_sendmail_pid(&MainEnvelope); 2427 2428 /* set the title to make it easier to find */ 2429 sm_setproctitle(true, CurEnv, "Queue control"); 2430 (void) sm_signal(SIGCHLD, SIG_DFL); 2431 while (CurChildren > 0) 2432 { 2433 int status; 2434 pid_t ret; 2435 int group; 2436 2437 CHECK_RESTART; 2438 errno = 0; 2439 while ((ret = sm_wait(&status)) <= 0) 2440 { 2441 /* 2442 ** Waiting for non-existent 2443 ** children shouldn't happen. 2444 ** Let's get out of here if 2445 ** it occurs. 2446 */ 2447 2448 if (errno == ECHILD) 2449 { 2450 CurChildren = 0; 2451 break; 2452 } 2453 continue; 2454 } 2455 2456 /* something is really really wrong */ 2457 if (errno == ECHILD) 2458 { 2459 sm_syslog(LOG_ERR, NOQID, 2460 "persistent queue runner control process: lost all children: wait returned ECHILD"); 2461 break; 2462 } 2463 2464 if (WIFSTOPPED(status)) 2465 continue; 2466 2467 /* Probe only on a child status */ 2468 proc_list_drop(ret, status, &group); 2469 2470 if (WIFSIGNALED(status)) 2471 { 2472 if (WCOREDUMP(status)) 2473 { 2474 sm_syslog(LOG_ERR, NOQID, 2475 "persistent queue runner=%d core dumped, signal=%d", 2476 group, WTERMSIG(status)); 2477 2478 /* don't restart this */ 2479 mark_work_group_restart( 2480 group, -1); 2481 continue; 2482 } 2483 2484 sm_syslog(LOG_ERR, NOQID, 2485 "persistent queue runner=%d died, pid=%ld, signal=%d", 2486 group, (long) ret, 2487 WTERMSIG(status)); 2488 } 2489 2490 /* 2491 ** When debugging active, don't 2492 ** restart the persistent queues. 2493 ** But do log this as info. 2494 */ 2495 2496 if (sm_debug_active(&DebugNoPRestart, 2497 1)) 2498 { 2499 sm_syslog(LOG_DEBUG, NOQID, 2500 "persistent queue runner=%d, exited", 2501 group); 2502 mark_work_group_restart(group, 2503 -1); 2504 } 2505 CHECK_RESTART; 2506 } 2507 finis(true, true, ExitStat); 2508 /* NOTREACHED */ 2509 } 2510 2511 if (OpMode != MD_DAEMON) 2512 { 2513 char qtype[200]; 2514 2515 /* 2516 ** Write the pid to file 2517 ** XXX Overwrites sendmail.pid 2518 */ 2519 2520 log_sendmail_pid(&MainEnvelope); 2521 2522 /* set the title to make it easier to find */ 2523 qtype[0] = '\0'; 2524 (void) sm_strlcpyn(qtype, sizeof(qtype), 4, 2525 "Queue runner@", 2526 pintvl(QueueIntvl, true), 2527 " for ", 2528 QueueDir); 2529 sm_setproctitle(true, CurEnv, qtype); 2530 for (;;) 2531 { 2532 (void) pause(); 2533 2534 CHECK_RESTART; 2535 2536 if (doqueuerun()) 2537 (void) runqueue(true, false, 2538 false, false); 2539 } 2540 } 2541 } 2542 dropenvelope(&MainEnvelope, true, false); 2543 2544 #if STARTTLS 2545 /* init TLS for server, ignore result for now */ 2546 (void) initsrvtls(tls_ok); 2547 #endif /* STARTTLS */ 2548 2549 nextreq: 2550 p_flags = getrequests(&MainEnvelope); 2551 2552 /* drop privileges */ 2553 (void) drop_privileges(false); 2554 2555 /* 2556 ** Get authentication data 2557 ** Set _ macro in BlankEnvelope before calling newenvelope(). 2558 */ 2559 2560 authinfo = getauthinfo(sm_io_getinfo(InChannel, SM_IO_WHAT_FD, 2561 NULL), &forged); 2562 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 2563 2564 /* at this point we are in a child: reset state */ 2565 sm_rpool_free(MainEnvelope.e_rpool); 2566 (void) newenvelope(&MainEnvelope, &MainEnvelope, 2567 sm_rpool_new_x(NULL)); 2568 } 2569 2570 if (LogLevel > 9) 2571 { 2572 /* log connection information */ 2573 sm_syslog(LOG_INFO, NULL, "connect from %s", authinfo); 2574 } 2575 2576 /* 2577 ** If running SMTP protocol, start collecting and executing 2578 ** commands. This will never return. 2579 */ 2580 2581 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2582 { 2583 char pbuf[20]; 2584 2585 /* 2586 ** Save some macros for check_* rulesets. 2587 */ 2588 2589 if (forged) 2590 { 2591 char ipbuf[103]; 2592 2593 (void) sm_snprintf(ipbuf, sizeof(ipbuf), "[%.100s]", 2594 anynet_ntoa(&RealHostAddr)); 2595 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2596 macid("{client_name}"), ipbuf); 2597 } 2598 else 2599 macdefine(&BlankEnvelope.e_macro, A_PERM, 2600 macid("{client_name}"), RealHostName); 2601 macdefine(&BlankEnvelope.e_macro, A_PERM, 2602 macid("{client_ptr}"), RealHostName); 2603 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2604 macid("{client_addr}"), anynet_ntoa(&RealHostAddr)); 2605 sm_getla(); 2606 2607 switch (RealHostAddr.sa.sa_family) 2608 { 2609 #if NETINET 2610 case AF_INET: 2611 (void) sm_snprintf(pbuf, sizeof(pbuf), "%d", 2612 RealHostAddr.sin.sin_port); 2613 break; 2614 #endif /* NETINET */ 2615 #if NETINET6 2616 case AF_INET6: 2617 (void) sm_snprintf(pbuf, sizeof(pbuf), "%d", 2618 RealHostAddr.sin6.sin6_port); 2619 break; 2620 #endif /* NETINET6 */ 2621 default: 2622 (void) sm_snprintf(pbuf, sizeof(pbuf), "0"); 2623 break; 2624 } 2625 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2626 macid("{client_port}"), pbuf); 2627 2628 if (OpMode == MD_DAEMON) 2629 { 2630 ENVELOPE *saved_env; 2631 2632 /* validate the connection */ 2633 HoldErrs = true; 2634 saved_env = CurEnv; 2635 CurEnv = &BlankEnvelope; 2636 nullserver = validate_connection(&RealHostAddr, 2637 macvalue(macid("{client_name}"), 2638 &BlankEnvelope), 2639 &BlankEnvelope); 2640 if (bitset(EF_DISCARD, BlankEnvelope.e_flags)) 2641 MainEnvelope.e_flags |= EF_DISCARD; 2642 CurEnv = saved_env; 2643 HoldErrs = false; 2644 } 2645 else if (p_flags == NULL) 2646 { 2647 p_flags = (BITMAP256 *) xalloc(sizeof(*p_flags)); 2648 clrbitmap(p_flags); 2649 } 2650 #if STARTTLS 2651 if (OpMode == MD_SMTP) 2652 (void) initsrvtls(tls_ok); 2653 #endif /* STARTTLS */ 2654 2655 /* turn off profiling */ 2656 SM_PROF(1); 2657 smtp(nullserver, *p_flags, &MainEnvelope); 2658 2659 if (tTd(93, 100)) 2660 { 2661 /* turn off profiling */ 2662 SM_PROF(0); 2663 if (OpMode == MD_DAEMON) 2664 goto nextreq; 2665 } 2666 } 2667 2668 sm_rpool_free(MainEnvelope.e_rpool); 2669 clearenvelope(&MainEnvelope, false, sm_rpool_new_x(NULL)); 2670 if (OpMode == MD_VERIFY) 2671 { 2672 set_delivery_mode(SM_VERIFY, &MainEnvelope); 2673 PostMasterCopy = NULL; 2674 } 2675 else 2676 { 2677 /* interactive -- all errors are global */ 2678 MainEnvelope.e_flags |= EF_GLOBALERRS|EF_LOGSENDER; 2679 } 2680 2681 /* 2682 ** Do basic system initialization and set the sender 2683 */ 2684 2685 initsys(&MainEnvelope); 2686 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{ntries}"), "0"); 2687 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{nrcpts}"), "0"); 2688 setsender(from, &MainEnvelope, NULL, '\0', false); 2689 if (warn_f_flag != '\0' && !wordinclass(RealUserName, 't') && 2690 (!bitnset(M_LOCALMAILER, MainEnvelope.e_from.q_mailer->m_flags) || 2691 strcmp(MainEnvelope.e_from.q_user, RealUserName) != 0)) 2692 { 2693 auth_warning(&MainEnvelope, "%s set sender to %s using -%c", 2694 RealUserName, from, warn_f_flag); 2695 #if SASL 2696 auth = false; 2697 #endif /* SASL */ 2698 } 2699 if (auth) 2700 { 2701 char *fv; 2702 2703 /* set the initial sender for AUTH= to $f@$j */ 2704 fv = macvalue('f', &MainEnvelope); 2705 if (fv == NULL || *fv == '\0') 2706 MainEnvelope.e_auth_param = NULL; 2707 else 2708 { 2709 if (strchr(fv, '@') == NULL) 2710 { 2711 i = strlen(fv) + strlen(macvalue('j', 2712 &MainEnvelope)) + 2; 2713 p = sm_malloc_x(i); 2714 (void) sm_strlcpyn(p, i, 3, fv, "@", 2715 macvalue('j', 2716 &MainEnvelope)); 2717 } 2718 else 2719 p = sm_strdup_x(fv); 2720 MainEnvelope.e_auth_param = sm_rpool_strdup_x(MainEnvelope.e_rpool, 2721 xtextify(p, "=")); 2722 sm_free(p); /* XXX */ 2723 } 2724 } 2725 if (macvalue('s', &MainEnvelope) == NULL) 2726 macdefine(&MainEnvelope.e_macro, A_PERM, 's', RealHostName); 2727 2728 av = argv + optind; 2729 if (*av == NULL && !GrabTo) 2730 { 2731 MainEnvelope.e_to = NULL; 2732 MainEnvelope.e_flags |= EF_GLOBALERRS; 2733 HoldErrs = false; 2734 SuperSafe = SAFE_NO; 2735 usrerr("Recipient names must be specified"); 2736 2737 /* collect body for UUCP return */ 2738 if (OpMode != MD_VERIFY) 2739 collect(InChannel, false, NULL, &MainEnvelope, true); 2740 finis(true, true, EX_USAGE); 2741 /* NOTREACHED */ 2742 } 2743 2744 /* 2745 ** Scan argv and deliver the message to everyone. 2746 */ 2747 2748 save_val = LogUsrErrs; 2749 LogUsrErrs = true; 2750 sendtoargv(av, &MainEnvelope); 2751 LogUsrErrs = save_val; 2752 2753 /* if we have had errors sofar, arrange a meaningful exit stat */ 2754 if (Errors > 0 && ExitStat == EX_OK) 2755 ExitStat = EX_USAGE; 2756 2757 #if _FFR_FIX_DASHT 2758 /* 2759 ** If using -t, force not sending to argv recipients, even 2760 ** if they are mentioned in the headers. 2761 */ 2762 2763 if (GrabTo) 2764 { 2765 ADDRESS *q; 2766 2767 for (q = MainEnvelope.e_sendqueue; q != NULL; q = q->q_next) 2768 q->q_state = QS_REMOVED; 2769 } 2770 #endif /* _FFR_FIX_DASHT */ 2771 2772 /* 2773 ** Read the input mail. 2774 */ 2775 2776 MainEnvelope.e_to = NULL; 2777 if (OpMode != MD_VERIFY || GrabTo) 2778 { 2779 int savederrors; 2780 unsigned long savedflags; 2781 2782 /* 2783 ** workaround for compiler warning on Irix: 2784 ** do not initialize variable in the definition, but 2785 ** later on: 2786 ** warning(1548): transfer of control bypasses 2787 ** initialization of: 2788 ** variable "savederrors" (declared at line 2570) 2789 ** variable "savedflags" (declared at line 2571) 2790 ** goto giveup; 2791 */ 2792 2793 savederrors = Errors; 2794 savedflags = MainEnvelope.e_flags & EF_FATALERRS; 2795 MainEnvelope.e_flags |= EF_GLOBALERRS; 2796 MainEnvelope.e_flags &= ~EF_FATALERRS; 2797 Errors = 0; 2798 buffer_errors(); 2799 collect(InChannel, false, NULL, &MainEnvelope, true); 2800 2801 /* header checks failed */ 2802 if (Errors > 0) 2803 { 2804 giveup: 2805 if (!GrabTo) 2806 { 2807 /* Log who the mail would have gone to */ 2808 logundelrcpts(&MainEnvelope, 2809 MainEnvelope.e_message, 2810 8, false); 2811 } 2812 flush_errors(true); 2813 finis(true, true, ExitStat); 2814 /* NOTREACHED */ 2815 return -1; 2816 } 2817 2818 /* bail out if message too large */ 2819 if (bitset(EF_CLRQUEUE, MainEnvelope.e_flags)) 2820 { 2821 finis(true, true, ExitStat != EX_OK ? ExitStat 2822 : EX_DATAERR); 2823 /* NOTREACHED */ 2824 return -1; 2825 } 2826 2827 /* set message size */ 2828 (void) sm_snprintf(buf, sizeof(buf), "%ld", 2829 MainEnvelope.e_msgsize); 2830 macdefine(&MainEnvelope.e_macro, A_TEMP, 2831 macid("{msg_size}"), buf); 2832 2833 Errors = savederrors; 2834 MainEnvelope.e_flags |= savedflags; 2835 } 2836 errno = 0; 2837 2838 if (tTd(1, 1)) 2839 sm_dprintf("From person = \"%s\"\n", 2840 MainEnvelope.e_from.q_paddr); 2841 2842 /* Check if quarantining stats should be updated */ 2843 if (MainEnvelope.e_quarmsg != NULL) 2844 markstats(&MainEnvelope, NULL, STATS_QUARANTINE); 2845 2846 /* 2847 ** Actually send everything. 2848 ** If verifying, just ack. 2849 */ 2850 2851 if (Errors == 0) 2852 { 2853 if (!split_by_recipient(&MainEnvelope) && 2854 bitset(EF_FATALERRS, MainEnvelope.e_flags)) 2855 goto giveup; 2856 } 2857 2858 /* make sure we deliver at least the first envelope */ 2859 i = FastSplit > 0 ? 0 : -1; 2860 for (e = &MainEnvelope; e != NULL; e = e->e_sibling, i++) 2861 { 2862 ENVELOPE *next; 2863 2864 e->e_from.q_state = QS_SENDER; 2865 if (tTd(1, 5)) 2866 { 2867 sm_dprintf("main[%d]: QS_SENDER ", i); 2868 printaddr(sm_debug_file(), &e->e_from, false); 2869 } 2870 e->e_to = NULL; 2871 sm_getla(); 2872 GrabTo = false; 2873 #if NAMED_BIND 2874 _res.retry = TimeOuts.res_retry[RES_TO_FIRST]; 2875 _res.retrans = TimeOuts.res_retrans[RES_TO_FIRST]; 2876 #endif /* NAMED_BIND */ 2877 next = e->e_sibling; 2878 e->e_sibling = NULL; 2879 2880 /* after FastSplit envelopes: queue up */ 2881 sendall(e, i >= FastSplit ? SM_QUEUE : SM_DEFAULT); 2882 e->e_sibling = next; 2883 } 2884 2885 /* 2886 ** All done. 2887 ** Don't send return error message if in VERIFY mode. 2888 */ 2889 2890 finis(true, true, ExitStat); 2891 /* NOTREACHED */ 2892 return ExitStat; 2893 } 2894 /* 2895 ** STOP_SENDMAIL -- Stop the running program 2896 ** 2897 ** Parameters: 2898 ** none. 2899 ** 2900 ** Returns: 2901 ** none. 2902 ** 2903 ** Side Effects: 2904 ** exits. 2905 */ 2906 2907 void 2908 stop_sendmail() 2909 { 2910 /* reset uid for process accounting */ 2911 endpwent(); 2912 (void) setuid(RealUid); 2913 exit(EX_OK); 2914 } 2915 /* 2916 ** FINIS -- Clean up and exit. 2917 ** 2918 ** Parameters: 2919 ** drop -- whether or not to drop CurEnv envelope 2920 ** cleanup -- call exit() or _exit()? 2921 ** exitstat -- exit status to use for exit() call 2922 ** 2923 ** Returns: 2924 ** never 2925 ** 2926 ** Side Effects: 2927 ** exits sendmail 2928 */ 2929 2930 void 2931 finis(drop, cleanup, exitstat) 2932 bool drop; 2933 bool cleanup; 2934 volatile int exitstat; 2935 { 2936 char pidpath[MAXPATHLEN]; 2937 pid_t pid; 2938 2939 /* Still want to process new timeouts added below */ 2940 sm_clear_events(); 2941 (void) sm_releasesignal(SIGALRM); 2942 2943 if (tTd(2, 1)) 2944 { 2945 sm_dprintf("\n====finis: stat %d e_id=%s e_flags=", 2946 exitstat, 2947 CurEnv->e_id == NULL ? "NOQUEUE" : CurEnv->e_id); 2948 printenvflags(CurEnv); 2949 } 2950 if (tTd(2, 9)) 2951 printopenfds(false); 2952 2953 SM_TRY 2954 /* 2955 ** Clean up. This might raise E:mta.quickabort 2956 */ 2957 2958 /* clean up temp files */ 2959 CurEnv->e_to = NULL; 2960 if (drop) 2961 { 2962 if (CurEnv->e_id != NULL) 2963 { 2964 dropenvelope(CurEnv, true, false); 2965 sm_rpool_free(CurEnv->e_rpool); 2966 CurEnv->e_rpool = NULL; 2967 2968 /* these may have pointed to the rpool */ 2969 CurEnv->e_to = NULL; 2970 CurEnv->e_message = NULL; 2971 CurEnv->e_statmsg = NULL; 2972 CurEnv->e_quarmsg = NULL; 2973 CurEnv->e_bodytype = NULL; 2974 CurEnv->e_id = NULL; 2975 CurEnv->e_envid = NULL; 2976 CurEnv->e_auth_param = NULL; 2977 } 2978 else 2979 poststats(StatFile); 2980 } 2981 2982 /* flush any cached connections */ 2983 mci_flush(true, NULL); 2984 2985 /* close maps belonging to this pid */ 2986 closemaps(false); 2987 2988 #if USERDB 2989 /* close UserDatabase */ 2990 _udbx_close(); 2991 #endif /* USERDB */ 2992 2993 #if SASL 2994 stop_sasl_client(); 2995 #endif /* SASL */ 2996 2997 #if XLA 2998 /* clean up extended load average stuff */ 2999 xla_all_end(); 3000 #endif /* XLA */ 3001 3002 SM_FINALLY 3003 /* 3004 ** And exit. 3005 */ 3006 3007 if (LogLevel > 78) 3008 sm_syslog(LOG_DEBUG, CurEnv->e_id, "finis, pid=%d", 3009 (int) CurrentPid); 3010 if (exitstat == EX_TEMPFAIL || 3011 CurEnv->e_errormode == EM_BERKNET) 3012 exitstat = EX_OK; 3013 3014 /* XXX clean up queues and related data structures */ 3015 cleanup_queues(); 3016 pid = getpid(); 3017 #if SM_CONF_SHM 3018 cleanup_shm(DaemonPid == pid); 3019 #endif /* SM_CONF_SHM */ 3020 3021 /* close locked pid file */ 3022 close_sendmail_pid(); 3023 3024 if (DaemonPid == pid || PidFilePid == pid) 3025 { 3026 /* blow away the pid file */ 3027 expand(PidFile, pidpath, sizeof(pidpath), CurEnv); 3028 (void) unlink(pidpath); 3029 } 3030 3031 /* reset uid for process accounting */ 3032 endpwent(); 3033 sm_mbdb_terminate(); 3034 #if _FFR_MEMSTAT 3035 (void) sm_memstat_close(); 3036 #endif /* _FFR_MEMSTAT */ 3037 (void) setuid(RealUid); 3038 #if SM_HEAP_CHECK 3039 /* dump the heap, if we are checking for memory leaks */ 3040 if (sm_debug_active(&SmHeapCheck, 2)) 3041 sm_heap_report(smioout, 3042 sm_debug_level(&SmHeapCheck) - 1); 3043 #endif /* SM_HEAP_CHECK */ 3044 if (sm_debug_active(&SmXtrapReport, 1)) 3045 sm_dprintf("xtrap count = %d\n", SmXtrapCount); 3046 if (cleanup) 3047 exit(exitstat); 3048 else 3049 _exit(exitstat); 3050 SM_END_TRY 3051 } 3052 /* 3053 ** INTINDEBUG -- signal handler for SIGINT in -bt mode 3054 ** 3055 ** Parameters: 3056 ** sig -- incoming signal. 3057 ** 3058 ** Returns: 3059 ** none. 3060 ** 3061 ** Side Effects: 3062 ** longjmps back to test mode loop. 3063 ** 3064 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3065 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3066 ** DOING. 3067 */ 3068 3069 /* Type of an exception generated on SIGINT during address test mode. */ 3070 static const SM_EXC_TYPE_T EtypeInterrupt = 3071 { 3072 SmExcTypeMagic, 3073 "S:mta.interrupt", 3074 "", 3075 sm_etype_printf, 3076 "interrupt", 3077 }; 3078 3079 /* ARGSUSED */ 3080 static SIGFUNC_DECL 3081 intindebug(sig) 3082 int sig; 3083 { 3084 int save_errno = errno; 3085 3086 FIX_SYSV_SIGNAL(sig, intindebug); 3087 errno = save_errno; 3088 CHECK_CRITICAL(sig); 3089 errno = save_errno; 3090 sm_exc_raisenew_x(&EtypeInterrupt); 3091 errno = save_errno; 3092 return SIGFUNC_RETURN; 3093 } 3094 /* 3095 ** SIGTERM -- SIGTERM handler for the daemon 3096 ** 3097 ** Parameters: 3098 ** sig -- signal number. 3099 ** 3100 ** Returns: 3101 ** none. 3102 ** 3103 ** Side Effects: 3104 ** Sets ShutdownRequest which will hopefully trigger 3105 ** the daemon to exit. 3106 ** 3107 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3108 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3109 ** DOING. 3110 */ 3111 3112 /* ARGSUSED */ 3113 static SIGFUNC_DECL 3114 sigterm(sig) 3115 int sig; 3116 { 3117 int save_errno = errno; 3118 3119 FIX_SYSV_SIGNAL(sig, sigterm); 3120 ShutdownRequest = "signal"; 3121 errno = save_errno; 3122 return SIGFUNC_RETURN; 3123 } 3124 /* 3125 ** SIGHUP -- handle a SIGHUP signal 3126 ** 3127 ** Parameters: 3128 ** sig -- incoming signal. 3129 ** 3130 ** Returns: 3131 ** none. 3132 ** 3133 ** Side Effects: 3134 ** Sets RestartRequest which should cause the daemon 3135 ** to restart. 3136 ** 3137 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3138 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3139 ** DOING. 3140 */ 3141 3142 /* ARGSUSED */ 3143 static SIGFUNC_DECL 3144 sighup(sig) 3145 int sig; 3146 { 3147 int save_errno = errno; 3148 3149 FIX_SYSV_SIGNAL(sig, sighup); 3150 RestartRequest = "signal"; 3151 errno = save_errno; 3152 return SIGFUNC_RETURN; 3153 } 3154 /* 3155 ** SIGPIPE -- signal handler for SIGPIPE 3156 ** 3157 ** Parameters: 3158 ** sig -- incoming signal. 3159 ** 3160 ** Returns: 3161 ** none. 3162 ** 3163 ** Side Effects: 3164 ** Sets StopRequest which should cause the mailq/hoststatus 3165 ** display to stop. 3166 ** 3167 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3168 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3169 ** DOING. 3170 */ 3171 3172 /* ARGSUSED */ 3173 static SIGFUNC_DECL 3174 sigpipe(sig) 3175 int sig; 3176 { 3177 int save_errno = errno; 3178 3179 FIX_SYSV_SIGNAL(sig, sigpipe); 3180 StopRequest = true; 3181 errno = save_errno; 3182 return SIGFUNC_RETURN; 3183 } 3184 /* 3185 ** INTSIG -- clean up on interrupt 3186 ** 3187 ** This just arranges to exit. It pessimizes in that it 3188 ** may resend a message. 3189 ** 3190 ** Parameters: 3191 ** none. 3192 ** 3193 ** Returns: 3194 ** none. 3195 ** 3196 ** Side Effects: 3197 ** Unlocks the current job. 3198 ** 3199 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3200 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3201 ** DOING. 3202 ** 3203 ** XXX: More work is needed for this signal handler. 3204 */ 3205 3206 /* ARGSUSED */ 3207 SIGFUNC_DECL 3208 intsig(sig) 3209 int sig; 3210 { 3211 bool drop = false; 3212 int save_errno = errno; 3213 3214 FIX_SYSV_SIGNAL(sig, intsig); 3215 errno = save_errno; 3216 CHECK_CRITICAL(sig); 3217 sm_allsignals(true); 3218 3219 if (sig != 0 && LogLevel > 79) 3220 sm_syslog(LOG_DEBUG, CurEnv->e_id, "interrupt"); 3221 FileName = NULL; 3222 3223 /* Clean-up on aborted stdin message submission */ 3224 if (CurEnv->e_id != NULL && 3225 (OpMode == MD_SMTP || 3226 OpMode == MD_DELIVER || 3227 OpMode == MD_ARPAFTP)) 3228 { 3229 register ADDRESS *q; 3230 3231 /* don't return an error indication */ 3232 CurEnv->e_to = NULL; 3233 CurEnv->e_flags &= ~EF_FATALERRS; 3234 CurEnv->e_flags |= EF_CLRQUEUE; 3235 3236 /* 3237 ** Spin through the addresses and 3238 ** mark them dead to prevent bounces 3239 */ 3240 3241 for (q = CurEnv->e_sendqueue; q != NULL; q = q->q_next) 3242 q->q_state = QS_DONTSEND; 3243 3244 drop = true; 3245 } 3246 else if (OpMode != MD_TEST) 3247 { 3248 unlockqueue(CurEnv); 3249 } 3250 3251 finis(drop, false, EX_OK); 3252 /* NOTREACHED */ 3253 } 3254 /* 3255 ** DISCONNECT -- remove our connection with any foreground process 3256 ** 3257 ** Parameters: 3258 ** droplev -- how "deeply" we should drop the line. 3259 ** 0 -- ignore signals, mail back errors, make sure 3260 ** output goes to stdout. 3261 ** 1 -- also, make stdout go to /dev/null. 3262 ** 2 -- also, disconnect from controlling terminal 3263 ** (only for daemon mode). 3264 ** e -- the current envelope. 3265 ** 3266 ** Returns: 3267 ** none 3268 ** 3269 ** Side Effects: 3270 ** Trys to insure that we are immune to vagaries of 3271 ** the controlling tty. 3272 */ 3273 3274 void 3275 disconnect(droplev, e) 3276 int droplev; 3277 register ENVELOPE *e; 3278 { 3279 int fd; 3280 3281 if (tTd(52, 1)) 3282 sm_dprintf("disconnect: In %d Out %d, e=%p\n", 3283 sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL), 3284 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL), e); 3285 if (tTd(52, 100)) 3286 { 3287 sm_dprintf("don't\n"); 3288 return; 3289 } 3290 if (LogLevel > 93) 3291 sm_syslog(LOG_DEBUG, e->e_id, 3292 "disconnect level %d", 3293 droplev); 3294 3295 /* be sure we don't get nasty signals */ 3296 (void) sm_signal(SIGINT, SIG_IGN); 3297 (void) sm_signal(SIGQUIT, SIG_IGN); 3298 3299 /* we can't communicate with our caller, so.... */ 3300 HoldErrs = true; 3301 CurEnv->e_errormode = EM_MAIL; 3302 Verbose = 0; 3303 DisConnected = true; 3304 3305 /* all input from /dev/null */ 3306 if (InChannel != smioin) 3307 { 3308 (void) sm_io_close(InChannel, SM_TIME_DEFAULT); 3309 InChannel = smioin; 3310 } 3311 if (sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3312 SM_IO_RDONLY, NULL, smioin) == NULL) 3313 sm_syslog(LOG_ERR, e->e_id, 3314 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3315 SM_PATH_DEVNULL, sm_errstring(errno)); 3316 3317 /* 3318 ** output to the transcript 3319 ** We also compare the fd numbers here since OutChannel 3320 ** might be a layer on top of smioout due to encryption 3321 ** (see sfsasl.c). 3322 */ 3323 3324 if (OutChannel != smioout && 3325 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL) != 3326 sm_io_getinfo(smioout, SM_IO_WHAT_FD, NULL)) 3327 { 3328 (void) sm_io_close(OutChannel, SM_TIME_DEFAULT); 3329 OutChannel = smioout; 3330 3331 #if 0 3332 /* 3333 ** Has smioout been closed? Reopen it. 3334 ** This shouldn't happen anymore, the code is here 3335 ** just as a reminder. 3336 */ 3337 3338 if (smioout->sm_magic == NULL && 3339 sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3340 SM_IO_WRONLY, NULL, smioout) == NULL) 3341 sm_syslog(LOG_ERR, e->e_id, 3342 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3343 SM_PATH_DEVNULL, sm_errstring(errno)); 3344 #endif /* 0 */ 3345 } 3346 if (droplev > 0) 3347 { 3348 fd = open(SM_PATH_DEVNULL, O_WRONLY, 0666); 3349 if (fd == -1) 3350 { 3351 sm_syslog(LOG_ERR, e->e_id, 3352 "disconnect: open(\"%s\") failed: %s", 3353 SM_PATH_DEVNULL, sm_errstring(errno)); 3354 } 3355 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 3356 if (fd >= 0) 3357 { 3358 (void) dup2(fd, STDOUT_FILENO); 3359 (void) dup2(fd, STDERR_FILENO); 3360 (void) close(fd); 3361 } 3362 } 3363 3364 /* drop our controlling TTY completely if possible */ 3365 if (droplev > 1) 3366 { 3367 (void) setsid(); 3368 errno = 0; 3369 } 3370 3371 #if XDEBUG 3372 checkfd012("disconnect"); 3373 #endif /* XDEBUG */ 3374 3375 if (LogLevel > 71) 3376 sm_syslog(LOG_DEBUG, e->e_id, "in background, pid=%d", 3377 (int) CurrentPid); 3378 3379 errno = 0; 3380 } 3381 3382 static void 3383 obsolete(argv) 3384 char *argv[]; 3385 { 3386 register char *ap; 3387 register char *op; 3388 3389 while ((ap = *++argv) != NULL) 3390 { 3391 /* Return if "--" or not an option of any form. */ 3392 if (ap[0] != '-' || ap[1] == '-') 3393 return; 3394 3395 /* Don't allow users to use "-Q." or "-Q ." */ 3396 if ((ap[1] == 'Q' && ap[2] == '.') || 3397 (ap[1] == 'Q' && argv[1] != NULL && 3398 argv[1][0] == '.' && argv[1][1] == '\0')) 3399 { 3400 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3401 "Can not use -Q.\n"); 3402 exit(EX_USAGE); 3403 } 3404 3405 /* skip over options that do have a value */ 3406 op = strchr(OPTIONS, ap[1]); 3407 if (op != NULL && *++op == ':' && ap[2] == '\0' && 3408 ap[1] != 'd' && 3409 #if defined(sony_news) 3410 ap[1] != 'E' && ap[1] != 'J' && 3411 #endif /* defined(sony_news) */ 3412 argv[1] != NULL && argv[1][0] != '-') 3413 { 3414 argv++; 3415 continue; 3416 } 3417 3418 /* If -C doesn't have an argument, use sendmail.cf. */ 3419 #define __DEFPATH "sendmail.cf" 3420 if (ap[1] == 'C' && ap[2] == '\0') 3421 { 3422 *argv = xalloc(sizeof(__DEFPATH) + 2); 3423 (void) sm_strlcpyn(argv[0], sizeof(__DEFPATH) + 2, 2, 3424 "-C", __DEFPATH); 3425 } 3426 3427 /* If -q doesn't have an argument, run it once. */ 3428 if (ap[1] == 'q' && ap[2] == '\0') 3429 *argv = "-q0"; 3430 3431 /* If -Q doesn't have an argument, disable quarantining */ 3432 if (ap[1] == 'Q' && ap[2] == '\0') 3433 *argv = "-Q."; 3434 3435 /* if -d doesn't have an argument, use 0-99.1 */ 3436 if (ap[1] == 'd' && ap[2] == '\0') 3437 *argv = "-d0-99.1"; 3438 3439 #if defined(sony_news) 3440 /* if -E doesn't have an argument, use -EC */ 3441 if (ap[1] == 'E' && ap[2] == '\0') 3442 *argv = "-EC"; 3443 3444 /* if -J doesn't have an argument, use -JJ */ 3445 if (ap[1] == 'J' && ap[2] == '\0') 3446 *argv = "-JJ"; 3447 #endif /* defined(sony_news) */ 3448 } 3449 } 3450 /* 3451 ** AUTH_WARNING -- specify authorization warning 3452 ** 3453 ** Parameters: 3454 ** e -- the current envelope. 3455 ** msg -- the text of the message. 3456 ** args -- arguments to the message. 3457 ** 3458 ** Returns: 3459 ** none. 3460 */ 3461 3462 void 3463 #ifdef __STDC__ 3464 auth_warning(register ENVELOPE *e, const char *msg, ...) 3465 #else /* __STDC__ */ 3466 auth_warning(e, msg, va_alist) 3467 register ENVELOPE *e; 3468 const char *msg; 3469 va_dcl 3470 #endif /* __STDC__ */ 3471 { 3472 char buf[MAXLINE]; 3473 SM_VA_LOCAL_DECL 3474 3475 if (bitset(PRIV_AUTHWARNINGS, PrivacyFlags)) 3476 { 3477 register char *p; 3478 static char hostbuf[48]; 3479 3480 if (hostbuf[0] == '\0') 3481 { 3482 struct hostent *hp; 3483 3484 hp = myhostname(hostbuf, sizeof(hostbuf)); 3485 #if NETINET6 3486 if (hp != NULL) 3487 { 3488 freehostent(hp); 3489 hp = NULL; 3490 } 3491 #endif /* NETINET6 */ 3492 } 3493 3494 (void) sm_strlcpyn(buf, sizeof(buf), 2, hostbuf, ": "); 3495 p = &buf[strlen(buf)]; 3496 SM_VA_START(ap, msg); 3497 (void) sm_vsnprintf(p, SPACELEFT(buf, p), msg, ap); 3498 SM_VA_END(ap); 3499 addheader("X-Authentication-Warning", buf, 0, e, true); 3500 if (LogLevel > 3) 3501 sm_syslog(LOG_INFO, e->e_id, 3502 "Authentication-Warning: %.400s", 3503 buf); 3504 } 3505 } 3506 /* 3507 ** GETEXTENV -- get from external environment 3508 ** 3509 ** Parameters: 3510 ** envar -- the name of the variable to retrieve 3511 ** 3512 ** Returns: 3513 ** The value, if any. 3514 */ 3515 3516 static char * 3517 getextenv(envar) 3518 const char *envar; 3519 { 3520 char **envp; 3521 int l; 3522 3523 l = strlen(envar); 3524 for (envp = ExternalEnviron; envp != NULL && *envp != NULL; envp++) 3525 { 3526 if (strncmp(*envp, envar, l) == 0 && (*envp)[l] == '=') 3527 return &(*envp)[l + 1]; 3528 } 3529 return NULL; 3530 } 3531 /* 3532 ** SM_SETUSERENV -- set an environment variable in the propagated environment 3533 ** 3534 ** Parameters: 3535 ** envar -- the name of the environment variable. 3536 ** value -- the value to which it should be set. If 3537 ** null, this is extracted from the incoming 3538 ** environment. If that is not set, the call 3539 ** to sm_setuserenv is ignored. 3540 ** 3541 ** Returns: 3542 ** none. 3543 */ 3544 3545 void 3546 sm_setuserenv(envar, value) 3547 const char *envar; 3548 const char *value; 3549 { 3550 int i, l; 3551 char **evp = UserEnviron; 3552 char *p; 3553 3554 if (value == NULL) 3555 { 3556 value = getextenv(envar); 3557 if (value == NULL) 3558 return; 3559 } 3560 3561 /* XXX enforce reasonable size? */ 3562 i = strlen(envar) + 1; 3563 l = strlen(value) + i + 1; 3564 p = (char *) xalloc(l); 3565 (void) sm_strlcpyn(p, l, 3, envar, "=", value); 3566 3567 while (*evp != NULL && strncmp(*evp, p, i) != 0) 3568 evp++; 3569 if (*evp != NULL) 3570 { 3571 *evp++ = p; 3572 } 3573 else if (evp < &UserEnviron[MAXUSERENVIRON]) 3574 { 3575 *evp++ = p; 3576 *evp = NULL; 3577 } 3578 3579 /* make sure it is in our environment as well */ 3580 if (putenv(p) < 0) 3581 syserr("sm_setuserenv: putenv(%s) failed", p); 3582 } 3583 /* 3584 ** DUMPSTATE -- dump state 3585 ** 3586 ** For debugging. 3587 */ 3588 3589 void 3590 dumpstate(when) 3591 char *when; 3592 { 3593 register char *j = macvalue('j', CurEnv); 3594 int rs; 3595 extern int NextMacroId; 3596 3597 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3598 "--- dumping state on %s: $j = %s ---", 3599 when, 3600 j == NULL ? "<NULL>" : j); 3601 if (j != NULL) 3602 { 3603 if (!wordinclass(j, 'w')) 3604 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3605 "*** $j not in $=w ***"); 3606 } 3607 sm_syslog(LOG_DEBUG, CurEnv->e_id, "CurChildren = %d", CurChildren); 3608 sm_syslog(LOG_DEBUG, CurEnv->e_id, "NextMacroId = %d (Max %d)", 3609 NextMacroId, MAXMACROID); 3610 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- open file descriptors: ---"); 3611 printopenfds(true); 3612 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- connection cache: ---"); 3613 mci_dump_all(smioout, true); 3614 rs = strtorwset("debug_dumpstate", NULL, ST_FIND); 3615 if (rs > 0) 3616 { 3617 int status; 3618 register char **pvp; 3619 char *pv[MAXATOM + 1]; 3620 3621 pv[0] = NULL; 3622 status = REWRITE(pv, rs, CurEnv); 3623 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3624 "--- ruleset debug_dumpstate returns stat %d, pv: ---", 3625 status); 3626 for (pvp = pv; *pvp != NULL; pvp++) 3627 sm_syslog(LOG_DEBUG, CurEnv->e_id, "%s", *pvp); 3628 } 3629 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- end of state dump ---"); 3630 } 3631 3632 #ifdef SIGUSR1 3633 /* 3634 ** SIGUSR1 -- Signal a request to dump state. 3635 ** 3636 ** Parameters: 3637 ** sig -- calling signal. 3638 ** 3639 ** Returns: 3640 ** none. 3641 ** 3642 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3643 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3644 ** DOING. 3645 ** 3646 ** XXX: More work is needed for this signal handler. 3647 */ 3648 3649 /* ARGSUSED */ 3650 static SIGFUNC_DECL 3651 sigusr1(sig) 3652 int sig; 3653 { 3654 int save_errno = errno; 3655 3656 FIX_SYSV_SIGNAL(sig, sigusr1); 3657 errno = save_errno; 3658 CHECK_CRITICAL(sig); 3659 dumpstate("user signal"); 3660 # if SM_HEAP_CHECK 3661 dumpstab(); 3662 # endif /* SM_HEAP_CHECK */ 3663 errno = save_errno; 3664 return SIGFUNC_RETURN; 3665 } 3666 #endif /* SIGUSR1 */ 3667 3668 /* 3669 ** DROP_PRIVILEGES -- reduce privileges to those of the RunAsUser option 3670 ** 3671 ** Parameters: 3672 ** to_real_uid -- if set, drop to the real uid instead 3673 ** of the RunAsUser. 3674 ** 3675 ** Returns: 3676 ** EX_OSERR if the setuid failed. 3677 ** EX_OK otherwise. 3678 */ 3679 3680 int 3681 drop_privileges(to_real_uid) 3682 bool to_real_uid; 3683 { 3684 int rval = EX_OK; 3685 GIDSET_T emptygidset[1]; 3686 3687 if (tTd(47, 1)) 3688 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", 3689 (int) to_real_uid, 3690 (int) RealUid, (int) RealGid, 3691 (int) getuid(), (int) getgid(), 3692 (int) geteuid(), (int) getegid(), 3693 (int) RunAsUid, (int) RunAsGid); 3694 3695 if (to_real_uid) 3696 { 3697 RunAsUserName = RealUserName; 3698 RunAsUid = RealUid; 3699 RunAsGid = RealGid; 3700 EffGid = RunAsGid; 3701 } 3702 3703 /* make sure no one can grab open descriptors for secret files */ 3704 endpwent(); 3705 sm_mbdb_terminate(); 3706 3707 /* reset group permissions; these can be set later */ 3708 emptygidset[0] = (to_real_uid || RunAsGid != 0) ? RunAsGid : getegid(); 3709 3710 /* 3711 ** Notice: on some OS (Linux...) the setgroups() call causes 3712 ** a logfile entry if sendmail is not run by root. 3713 ** However, it is unclear (no POSIX standard) whether 3714 ** setgroups() can only succeed if executed by root. 3715 ** So for now we keep it as it is; if you want to change it, use 3716 ** if (geteuid() == 0 && setgroups(1, emptygidset) == -1) 3717 */ 3718 3719 if (setgroups(1, emptygidset) == -1 && geteuid() == 0) 3720 { 3721 syserr("drop_privileges: setgroups(1, %d) failed", 3722 (int) emptygidset[0]); 3723 rval = EX_OSERR; 3724 } 3725 3726 /* reset primary group id */ 3727 if (to_real_uid) 3728 { 3729 /* 3730 ** Drop gid to real gid. 3731 ** On some OS we must reset the effective[/real[/saved]] gid, 3732 ** and then use setgid() to finally drop all group privileges. 3733 ** Later on we check whether we can get back the 3734 ** effective gid. 3735 */ 3736 3737 #if HASSETEGID 3738 if (setegid(RunAsGid) < 0) 3739 { 3740 syserr("drop_privileges: setegid(%d) failed", 3741 (int) RunAsGid); 3742 rval = EX_OSERR; 3743 } 3744 #else /* HASSETEGID */ 3745 # if HASSETREGID 3746 if (setregid(RunAsGid, RunAsGid) < 0) 3747 { 3748 syserr("drop_privileges: setregid(%d, %d) failed", 3749 (int) RunAsGid, (int) RunAsGid); 3750 rval = EX_OSERR; 3751 } 3752 # else /* HASSETREGID */ 3753 # if HASSETRESGID 3754 if (setresgid(RunAsGid, RunAsGid, RunAsGid) < 0) 3755 { 3756 syserr("drop_privileges: setresgid(%d, %d, %d) failed", 3757 (int) RunAsGid, (int) RunAsGid, (int) RunAsGid); 3758 rval = EX_OSERR; 3759 } 3760 # endif /* HASSETRESGID */ 3761 # endif /* HASSETREGID */ 3762 #endif /* HASSETEGID */ 3763 } 3764 if (rval == EX_OK && (to_real_uid || RunAsGid != 0)) 3765 { 3766 if (setgid(RunAsGid) < 0 && (!UseMSP || getegid() != RunAsGid)) 3767 { 3768 syserr("drop_privileges: setgid(%d) failed", 3769 (int) RunAsGid); 3770 rval = EX_OSERR; 3771 } 3772 errno = 0; 3773 if (rval == EX_OK && getegid() != RunAsGid) 3774 { 3775 syserr("drop_privileges: Unable to set effective gid=%d to RunAsGid=%d", 3776 (int) getegid(), (int) RunAsGid); 3777 rval = EX_OSERR; 3778 } 3779 } 3780 3781 /* fiddle with uid */ 3782 if (to_real_uid || RunAsUid != 0) 3783 { 3784 uid_t euid; 3785 3786 /* 3787 ** Try to setuid(RunAsUid). 3788 ** euid must be RunAsUid, 3789 ** ruid must be RunAsUid unless (e|r)uid wasn't 0 3790 ** and we didn't have to drop privileges to the real uid. 3791 */ 3792 3793 if (setuid(RunAsUid) < 0 || 3794 geteuid() != RunAsUid || 3795 (getuid() != RunAsUid && 3796 (to_real_uid || geteuid() == 0 || getuid() == 0))) 3797 { 3798 #if HASSETREUID 3799 /* 3800 ** if ruid != RunAsUid, euid == RunAsUid, then 3801 ** try resetting just the real uid, then using 3802 ** setuid() to drop the saved-uid as well. 3803 */ 3804 3805 if (geteuid() == RunAsUid) 3806 { 3807 if (setreuid(RunAsUid, -1) < 0) 3808 { 3809 syserr("drop_privileges: setreuid(%d, -1) failed", 3810 (int) RunAsUid); 3811 rval = EX_OSERR; 3812 } 3813 if (setuid(RunAsUid) < 0) 3814 { 3815 syserr("drop_privileges: second setuid(%d) attempt failed", 3816 (int) RunAsUid); 3817 rval = EX_OSERR; 3818 } 3819 } 3820 else 3821 #endif /* HASSETREUID */ 3822 { 3823 syserr("drop_privileges: setuid(%d) failed", 3824 (int) RunAsUid); 3825 rval = EX_OSERR; 3826 } 3827 } 3828 euid = geteuid(); 3829 if (RunAsUid != 0 && setuid(0) == 0) 3830 { 3831 /* 3832 ** Believe it or not, the Linux capability model 3833 ** allows a non-root process to override setuid() 3834 ** on a process running as root and prevent that 3835 ** process from dropping privileges. 3836 */ 3837 3838 syserr("drop_privileges: setuid(0) succeeded (when it should not)"); 3839 rval = EX_OSERR; 3840 } 3841 else if (RunAsUid != euid && setuid(euid) == 0) 3842 { 3843 /* 3844 ** Some operating systems will keep the saved-uid 3845 ** if a non-root effective-uid calls setuid(real-uid) 3846 ** making it possible to set it back again later. 3847 */ 3848 3849 syserr("drop_privileges: Unable to drop non-root set-user-ID privileges"); 3850 rval = EX_OSERR; 3851 } 3852 } 3853 3854 if ((to_real_uid || RunAsGid != 0) && 3855 rval == EX_OK && RunAsGid != EffGid && 3856 getuid() != 0 && geteuid() != 0) 3857 { 3858 errno = 0; 3859 if (setgid(EffGid) == 0) 3860 { 3861 syserr("drop_privileges: setgid(%d) succeeded (when it should not)", 3862 (int) EffGid); 3863 rval = EX_OSERR; 3864 } 3865 } 3866 3867 if (tTd(47, 5)) 3868 { 3869 sm_dprintf("drop_privileges: e/ruid = %d/%d e/rgid = %d/%d\n", 3870 (int) geteuid(), (int) getuid(), 3871 (int) getegid(), (int) getgid()); 3872 sm_dprintf("drop_privileges: RunAsUser = %d:%d\n", 3873 (int) RunAsUid, (int) RunAsGid); 3874 if (tTd(47, 10)) 3875 sm_dprintf("drop_privileges: rval = %d\n", rval); 3876 } 3877 return rval; 3878 } 3879 /* 3880 ** FILL_FD -- make sure a file descriptor has been properly allocated 3881 ** 3882 ** Used to make sure that stdin/out/err are allocated on startup 3883 ** 3884 ** Parameters: 3885 ** fd -- the file descriptor to be filled. 3886 ** where -- a string used for logging. If NULL, this is 3887 ** being called on startup, and logging should 3888 ** not be done. 3889 ** 3890 ** Returns: 3891 ** none 3892 ** 3893 ** Side Effects: 3894 ** possibly changes MissingFds 3895 */ 3896 3897 void 3898 fill_fd(fd, where) 3899 int fd; 3900 char *where; 3901 { 3902 int i; 3903 struct stat stbuf; 3904 3905 if (fstat(fd, &stbuf) >= 0 || errno != EBADF) 3906 return; 3907 3908 if (where != NULL) 3909 syserr("fill_fd: %s: fd %d not open", where, fd); 3910 else 3911 MissingFds |= 1 << fd; 3912 i = open(SM_PATH_DEVNULL, fd == 0 ? O_RDONLY : O_WRONLY, 0666); 3913 if (i < 0) 3914 { 3915 syserr("!fill_fd: %s: cannot open %s", 3916 where == NULL ? "startup" : where, SM_PATH_DEVNULL); 3917 } 3918 if (fd != i) 3919 { 3920 (void) dup2(i, fd); 3921 (void) close(i); 3922 } 3923 } 3924 /* 3925 ** SM_PRINTOPTIONS -- print options 3926 ** 3927 ** Parameters: 3928 ** options -- array of options. 3929 ** 3930 ** Returns: 3931 ** none. 3932 */ 3933 3934 static void 3935 sm_printoptions(options) 3936 char **options; 3937 { 3938 int ll; 3939 char **av; 3940 3941 av = options; 3942 ll = 7; 3943 while (*av != NULL) 3944 { 3945 if (ll + strlen(*av) > 63) 3946 { 3947 sm_dprintf("\n"); 3948 ll = 0; 3949 } 3950 if (ll == 0) 3951 sm_dprintf("\t\t"); 3952 else 3953 sm_dprintf(" "); 3954 sm_dprintf("%s", *av); 3955 ll += strlen(*av++) + 1; 3956 } 3957 sm_dprintf("\n"); 3958 } 3959 3960 /* 3961 ** TO8BIT -- convert \octal sequences in a test mode input line 3962 ** 3963 ** Parameters: 3964 ** str -- the input line. 3965 ** 3966 ** Returns: 3967 ** none. 3968 ** 3969 ** Side Effects: 3970 ** replaces \0octal in str with octal value. 3971 */ 3972 3973 static bool to8bit __P((char *)); 3974 3975 static bool 3976 to8bit(str) 3977 char *str; 3978 { 3979 int c, len; 3980 char *out, *in; 3981 bool changed; 3982 3983 if (str == NULL) 3984 return false; 3985 in = out = str; 3986 changed = false; 3987 len = 0; 3988 while ((c = (*str++ & 0377)) != '\0') 3989 { 3990 int oct, nxtc; 3991 3992 ++len; 3993 if (c == '\\' && 3994 (nxtc = (*str & 0377)) == '0') 3995 { 3996 oct = 0; 3997 while ((nxtc = (*str & 0377)) != '\0' && 3998 isascii(nxtc) && isdigit(nxtc)) 3999 { 4000 oct <<= 3; 4001 oct += nxtc - '0'; 4002 ++str; 4003 ++len; 4004 } 4005 changed = true; 4006 c = oct; 4007 } 4008 *out++ = c; 4009 } 4010 *out++ = c; 4011 if (changed) 4012 { 4013 char *q; 4014 4015 q = quote_internal_chars(in, in, &len); 4016 if (q != in) 4017 sm_strlcpy(in, q, len); 4018 } 4019 return changed; 4020 } 4021 4022 /* 4023 ** TESTMODELINE -- process a test mode input line 4024 ** 4025 ** Parameters: 4026 ** line -- the input line. 4027 ** e -- the current environment. 4028 ** Syntax: 4029 ** # a comment 4030 ** .X process X as a configuration line 4031 ** =X dump a configuration item (such as mailers) 4032 ** $X dump a macro or class 4033 ** /X try an activity 4034 ** X normal process through rule set X 4035 */ 4036 4037 static void 4038 testmodeline(line, e) 4039 char *line; 4040 ENVELOPE *e; 4041 { 4042 register char *p; 4043 char *q; 4044 auto char *delimptr; 4045 int mid; 4046 int i, rs; 4047 STAB *map; 4048 char **s; 4049 struct rewrite *rw; 4050 ADDRESS a; 4051 char *lbp; 4052 auto int lbs; 4053 static int tryflags = RF_COPYNONE; 4054 char exbuf[MAXLINE]; 4055 char lbuf[MAXLINE]; 4056 extern unsigned char TokTypeNoC[]; 4057 bool eightbit; 4058 4059 /* skip leading spaces */ 4060 while (*line == ' ') 4061 line++; 4062 4063 lbp = NULL; 4064 eightbit = false; 4065 switch (line[0]) 4066 { 4067 case '#': 4068 case '\0': 4069 return; 4070 4071 case '?': 4072 help("-bt", e); 4073 return; 4074 4075 case '.': /* config-style settings */ 4076 switch (line[1]) 4077 { 4078 case 'D': 4079 mid = macid_parse(&line[2], &delimptr); 4080 if (mid == 0) 4081 return; 4082 lbs = sizeof(lbuf); 4083 lbp = translate_dollars(delimptr, lbuf, &lbs); 4084 macdefine(&e->e_macro, A_TEMP, mid, lbp); 4085 if (lbp != lbuf) 4086 SM_FREE(lbp); 4087 break; 4088 4089 case 'C': 4090 if (line[2] == '\0') /* not to call syserr() */ 4091 return; 4092 4093 mid = macid_parse(&line[2], &delimptr); 4094 if (mid == 0) 4095 return; 4096 lbs = sizeof(lbuf); 4097 lbp = translate_dollars(delimptr, lbuf, &lbs); 4098 expand(lbp, exbuf, sizeof(exbuf), e); 4099 if (lbp != lbuf) 4100 SM_FREE(lbp); 4101 p = exbuf; 4102 while (*p != '\0') 4103 { 4104 register char *wd; 4105 char delim; 4106 4107 while (*p != '\0' && isascii(*p) && isspace(*p)) 4108 p++; 4109 wd = p; 4110 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 4111 p++; 4112 delim = *p; 4113 *p = '\0'; 4114 if (wd[0] != '\0') 4115 setclass(mid, wd); 4116 *p = delim; 4117 } 4118 break; 4119 4120 case '\0': 4121 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4122 "Usage: .[DC]macro value(s)\n"); 4123 break; 4124 4125 default: 4126 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4127 "Unknown \".\" command %s\n", line); 4128 break; 4129 } 4130 return; 4131 4132 case '=': /* config-style settings */ 4133 switch (line[1]) 4134 { 4135 case 'S': /* dump rule set */ 4136 rs = strtorwset(&line[2], NULL, ST_FIND); 4137 if (rs < 0) 4138 { 4139 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4140 "Undefined ruleset %s\n", &line[2]); 4141 return; 4142 } 4143 rw = RewriteRules[rs]; 4144 if (rw == NULL) 4145 return; 4146 do 4147 { 4148 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4149 'R'); 4150 s = rw->r_lhs; 4151 while (*s != NULL) 4152 { 4153 xputs(smioout, *s++); 4154 (void) sm_io_putc(smioout, 4155 SM_TIME_DEFAULT, ' '); 4156 } 4157 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4158 '\t'); 4159 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4160 '\t'); 4161 s = rw->r_rhs; 4162 while (*s != NULL) 4163 { 4164 xputs(smioout, *s++); 4165 (void) sm_io_putc(smioout, 4166 SM_TIME_DEFAULT, ' '); 4167 } 4168 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4169 '\n'); 4170 } while ((rw = rw->r_next) != NULL); 4171 break; 4172 4173 case 'M': 4174 for (i = 0; i < MAXMAILERS; i++) 4175 { 4176 if (Mailer[i] != NULL) 4177 printmailer(smioout, Mailer[i]); 4178 } 4179 break; 4180 4181 case '\0': 4182 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4183 "Usage: =Sruleset or =M\n"); 4184 break; 4185 4186 default: 4187 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4188 "Unknown \"=\" command %s\n", line); 4189 break; 4190 } 4191 return; 4192 4193 case '-': /* set command-line-like opts */ 4194 switch (line[1]) 4195 { 4196 case 'd': 4197 tTflag(&line[2]); 4198 break; 4199 4200 case '\0': 4201 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4202 "Usage: -d{debug arguments}\n"); 4203 break; 4204 4205 default: 4206 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4207 "Unknown \"-\" command %s\n", line); 4208 break; 4209 } 4210 return; 4211 4212 case '$': 4213 if (line[1] == '=') 4214 { 4215 mid = macid(&line[2]); 4216 if (mid != 0) 4217 stabapply(dump_class, mid); 4218 return; 4219 } 4220 mid = macid(&line[1]); 4221 if (mid == 0) 4222 return; 4223 p = macvalue(mid, e); 4224 if (p == NULL) 4225 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4226 "Undefined\n"); 4227 else 4228 { 4229 xputs(smioout, p); 4230 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4231 "\n"); 4232 } 4233 return; 4234 4235 case '/': /* miscellaneous commands */ 4236 p = &line[strlen(line)]; 4237 while (--p >= line && isascii(*p) && isspace(*p)) 4238 *p = '\0'; 4239 p = strpbrk(line, " \t"); 4240 if (p != NULL) 4241 { 4242 while (isascii(*p) && isspace(*p)) 4243 *p++ = '\0'; 4244 } 4245 else 4246 p = ""; 4247 if (line[1] == '\0') 4248 { 4249 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4250 "Usage: /[canon|map|mx|parse|try|tryflags]\n"); 4251 return; 4252 } 4253 if (sm_strcasecmp(&line[1], "quit") == 0) 4254 { 4255 CurEnv->e_id = NULL; 4256 finis(true, true, ExitStat); 4257 /* NOTREACHED */ 4258 } 4259 if (sm_strcasecmp(&line[1], "mx") == 0) 4260 { 4261 #if NAMED_BIND 4262 /* look up MX records */ 4263 int nmx; 4264 auto int rcode; 4265 char *mxhosts[MAXMXHOSTS + 1]; 4266 4267 if (*p == '\0') 4268 { 4269 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4270 "Usage: /mx address\n"); 4271 return; 4272 } 4273 nmx = getmxrr(p, mxhosts, NULL, false, &rcode, true, 4274 NULL); 4275 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4276 "getmxrr(%s) returns %d value(s):\n", 4277 p, nmx); 4278 for (i = 0; i < nmx; i++) 4279 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4280 "\t%s\n", mxhosts[i]); 4281 #else /* NAMED_BIND */ 4282 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4283 "No MX code compiled in\n"); 4284 #endif /* NAMED_BIND */ 4285 } 4286 else if (sm_strcasecmp(&line[1], "canon") == 0) 4287 { 4288 char host[MAXHOSTNAMELEN]; 4289 4290 if (*p == '\0') 4291 { 4292 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4293 "Usage: /canon address\n"); 4294 return; 4295 } 4296 else if (sm_strlcpy(host, p, sizeof(host)) >= sizeof(host)) 4297 { 4298 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4299 "Name too long\n"); 4300 return; 4301 } 4302 (void) getcanonname(host, sizeof(host), !HasWildcardMX, 4303 NULL); 4304 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4305 "getcanonname(%s) returns %s\n", 4306 p, host); 4307 } 4308 else if (sm_strcasecmp(&line[1], "map") == 0) 4309 { 4310 auto int rcode = EX_OK; 4311 char *av[2]; 4312 4313 if (*p == '\0') 4314 { 4315 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4316 "Usage: /map mapname key\n"); 4317 return; 4318 } 4319 for (q = p; *q != '\0' && !(isascii(*q) && isspace(*q)); q++) 4320 continue; 4321 if (*q == '\0') 4322 { 4323 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4324 "No key specified\n"); 4325 return; 4326 } 4327 *q++ = '\0'; 4328 map = stab(p, ST_MAP, ST_FIND); 4329 if (map == NULL) 4330 { 4331 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4332 "Map named \"%s\" not found\n", p); 4333 return; 4334 } 4335 if (!bitset(MF_OPEN, map->s_map.map_mflags) && 4336 !openmap(&(map->s_map))) 4337 { 4338 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4339 "Map named \"%s\" not open\n", p); 4340 return; 4341 } 4342 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4343 "map_lookup: %s (%s) ", p, q); 4344 av[0] = q; 4345 av[1] = NULL; 4346 p = (*map->s_map.map_class->map_lookup) 4347 (&map->s_map, q, av, &rcode); 4348 if (p == NULL) 4349 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4350 "no match (%d)\n", 4351 rcode); 4352 else 4353 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4354 "returns %s (%d)\n", p, 4355 rcode); 4356 } 4357 else if (sm_strcasecmp(&line[1], "try") == 0) 4358 { 4359 MAILER *m; 4360 STAB *st; 4361 auto int rcode = EX_OK; 4362 4363 q = strpbrk(p, " \t"); 4364 if (q != NULL) 4365 { 4366 while (isascii(*q) && isspace(*q)) 4367 *q++ = '\0'; 4368 } 4369 if (q == NULL || *q == '\0') 4370 { 4371 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4372 "Usage: /try mailer address\n"); 4373 return; 4374 } 4375 st = stab(p, ST_MAILER, ST_FIND); 4376 if (st == NULL) 4377 { 4378 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4379 "Unknown mailer %s\n", p); 4380 return; 4381 } 4382 m = st->s_mailer; 4383 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4384 "Trying %s %s address %s for mailer %s\n", 4385 bitset(RF_HEADERADDR, tryflags) ? "header" 4386 : "envelope", 4387 bitset(RF_SENDERADDR, tryflags) ? "sender" 4388 : "recipient", q, p); 4389 p = remotename(q, m, tryflags, &rcode, CurEnv); 4390 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4391 "Rcode = %d, addr = %s\n", 4392 rcode, p == NULL ? "<NULL>" : p); 4393 e->e_to = NULL; 4394 } 4395 else if (sm_strcasecmp(&line[1], "tryflags") == 0) 4396 { 4397 if (*p == '\0') 4398 { 4399 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4400 "Usage: /tryflags [Hh|Ee][Ss|Rr]\n"); 4401 return; 4402 } 4403 for (; *p != '\0'; p++) 4404 { 4405 switch (*p) 4406 { 4407 case 'H': 4408 case 'h': 4409 tryflags |= RF_HEADERADDR; 4410 break; 4411 4412 case 'E': 4413 case 'e': 4414 tryflags &= ~RF_HEADERADDR; 4415 break; 4416 4417 case 'S': 4418 case 's': 4419 tryflags |= RF_SENDERADDR; 4420 break; 4421 4422 case 'R': 4423 case 'r': 4424 tryflags &= ~RF_SENDERADDR; 4425 break; 4426 } 4427 } 4428 exbuf[0] = bitset(RF_HEADERADDR, tryflags) ? 'h' : 'e'; 4429 exbuf[1] = ' '; 4430 exbuf[2] = bitset(RF_SENDERADDR, tryflags) ? 's' : 'r'; 4431 exbuf[3] = '\0'; 4432 macdefine(&e->e_macro, A_TEMP, 4433 macid("{addr_type}"), exbuf); 4434 } 4435 else if (sm_strcasecmp(&line[1], "parse") == 0) 4436 { 4437 if (*p == '\0') 4438 { 4439 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4440 "Usage: /parse address\n"); 4441 return; 4442 } 4443 q = crackaddr(p, e); 4444 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4445 "Cracked address = "); 4446 xputs(smioout, q); 4447 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4448 "\nParsing %s %s address\n", 4449 bitset(RF_HEADERADDR, tryflags) ? 4450 "header" : "envelope", 4451 bitset(RF_SENDERADDR, tryflags) ? 4452 "sender" : "recipient"); 4453 if (parseaddr(p, &a, tryflags, '\0', NULL, e, true) 4454 == NULL) 4455 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4456 "Cannot parse\n"); 4457 else if (a.q_host != NULL && a.q_host[0] != '\0') 4458 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4459 "mailer %s, host %s, user %s\n", 4460 a.q_mailer->m_name, 4461 a.q_host, 4462 a.q_user); 4463 else 4464 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4465 "mailer %s, user %s\n", 4466 a.q_mailer->m_name, 4467 a.q_user); 4468 e->e_to = NULL; 4469 } 4470 else if (sm_strcasecmp(&line[1], "header") == 0) 4471 { 4472 unsigned long ul; 4473 4474 ul = chompheader(p, CHHDR_CHECK|CHHDR_USER, NULL, e); 4475 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4476 "ul = %lu\n", ul); 4477 } 4478 else 4479 { 4480 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4481 "Unknown \"/\" command %s\n", 4482 line); 4483 } 4484 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 4485 return; 4486 } 4487 4488 for (p = line; isascii(*p) && isspace(*p); p++) 4489 continue; 4490 q = p; 4491 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 4492 p++; 4493 if (*p == '\0') 4494 { 4495 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4496 "No address!\n"); 4497 return; 4498 } 4499 *p = '\0'; 4500 if (tTd(23, 101)) 4501 eightbit = to8bit(p + 1); 4502 if (invalidaddr(p + 1, NULL, true)) 4503 return; 4504 do 4505 { 4506 register char **pvp; 4507 char pvpbuf[PSBUFSIZE]; 4508 4509 pvp = prescan(++p, ',', pvpbuf, sizeof(pvpbuf), &delimptr, 4510 ConfigLevel >= 9 ? TokTypeNoC : ExtTokenTab, false); 4511 if (pvp == NULL) 4512 continue; 4513 p = q; 4514 while (*p != '\0') 4515 { 4516 int status; 4517 4518 rs = strtorwset(p, NULL, ST_FIND); 4519 if (rs < 0) 4520 { 4521 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4522 "Undefined ruleset %s\n", 4523 p); 4524 break; 4525 } 4526 status = REWRITE(pvp, rs, e); 4527 if (status != EX_OK) 4528 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4529 "== Ruleset %s (%d) status %d\n", 4530 p, rs, status); 4531 else if (eightbit) 4532 { 4533 cataddr(pvp, NULL, exbuf, sizeof(exbuf), '\0', 4534 true); 4535 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4536 "cataddr: %s\n", 4537 str2prt(exbuf)); 4538 } 4539 while (*p != '\0' && *p++ != ',') 4540 continue; 4541 } 4542 } while (*(p = delimptr) != '\0'); 4543 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 4544 } 4545 4546 static void 4547 dump_class(s, id) 4548 register STAB *s; 4549 int id; 4550 { 4551 if (s->s_symtype != ST_CLASS) 4552 return; 4553 if (bitnset(bitidx(id), s->s_class)) 4554 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4555 "%s\n", s->s_name); 4556 } 4557 4558 /* 4559 ** An exception type used to create QuickAbort exceptions. 4560 ** This is my first cut at converting QuickAbort from longjmp to exceptions. 4561 ** These exceptions have a single integer argument, which is the argument 4562 ** to longjmp in the original code (either 1 or 2). I don't know the 4563 ** significance of 1 vs 2: the calls to setjmp don't care. 4564 */ 4565 4566 const SM_EXC_TYPE_T EtypeQuickAbort = 4567 { 4568 SmExcTypeMagic, 4569 "E:mta.quickabort", 4570 "i", 4571 sm_etype_printf, 4572 "quick abort %0", 4573 }; 4574