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