1 /* 2 * Copyright (c) 1998-2006, 2008, 2009, 2011 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 8.981 2012/06/14 23:54:02 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, (sasl_callback_ft)&safesaslfile, NULL }, 113 { SASL_CB_PROXY_POLICY, (sasl_callback_ft)&proxy_policy, NULL }, 114 { SASL_CB_LIST_END, NULL, NULL } 115 }; 116 #endif /* SASL */ 117 118 unsigned int SubmitMode; 119 int SyslogPrefixLen; /* estimated length of syslog prefix */ 120 #define PIDLEN 6 /* pid length for computing SyslogPrefixLen */ 121 #ifndef SL_FUDGE 122 # define SL_FUDGE 10 /* fudge offset for SyslogPrefixLen */ 123 #endif /* ! SL_FUDGE */ 124 #define SLDLL 8 /* est. length of default syslog label */ 125 126 127 /* Some options are dangerous to allow users to use in non-submit mode */ 128 #define CHECK_AGAINST_OPMODE(cmd) \ 129 { \ 130 if (extraprivs && \ 131 OpMode != MD_DELIVER && OpMode != MD_SMTP && \ 132 OpMode != MD_ARPAFTP && OpMode != MD_CHECKCONFIG && \ 133 OpMode != MD_VERIFY && OpMode != MD_TEST) \ 134 { \ 135 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \ 136 "WARNING: Ignoring submission mode -%c option (not in submission mode)\n", \ 137 (cmd)); \ 138 break; \ 139 } \ 140 if (extraprivs && queuerun) \ 141 { \ 142 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \ 143 "WARNING: Ignoring submission mode -%c option with -q\n", \ 144 (cmd)); \ 145 break; \ 146 } \ 147 } 148 149 int 150 main(argc, argv, envp) 151 int argc; 152 char **argv; 153 char **envp; 154 { 155 register char *p; 156 char **av; 157 extern char Version[]; 158 char *ep, *from; 159 STAB *st; 160 register int i; 161 int j; 162 int dp; 163 int fill_errno; 164 int qgrp = NOQGRP; /* queue group to process */ 165 bool safecf = true; 166 BITMAP256 *p_flags = NULL; /* daemon flags */ 167 bool warn_C_flag = false; 168 bool auth = true; /* whether to set e_auth_param */ 169 char warn_f_flag = '\0'; 170 bool run_in_foreground = false; /* -bD mode */ 171 bool queuerun = false, debug = false; 172 struct passwd *pw; 173 struct hostent *hp; 174 char *nullserver = NULL; 175 char *authinfo = NULL; 176 char *sysloglabel = NULL; /* label for syslog */ 177 char *conffile = NULL; /* name of .cf file */ 178 char *queuegroup = NULL; /* queue group to process */ 179 char *quarantining = NULL; /* quarantine queue items? */ 180 bool extraprivs; 181 bool forged, negate; 182 bool queuepersistent = false; /* queue runner process runs forever */ 183 bool foregroundqueue = false; /* queue run in foreground */ 184 bool save_val; /* to save some bool var. */ 185 int cftype; /* which cf file to use? */ 186 SM_FILE_T *smdebug; 187 static time_t starttime = 0; /* when was process started */ 188 struct stat traf_st; /* for TrafficLog FIFO check */ 189 char buf[MAXLINE]; 190 char jbuf[MAXHOSTNAMELEN]; /* holds MyHostName */ 191 static char rnamebuf[MAXNAME]; /* holds RealUserName */ 192 char *emptyenviron[1]; 193 #if STARTTLS 194 bool tls_ok; 195 #endif /* STARTTLS */ 196 QUEUE_CHAR *new; 197 ENVELOPE *e; 198 extern int DtableSize; 199 extern int optind; 200 extern int opterr; 201 extern char *optarg; 202 extern char **environ; 203 #if SASL 204 extern void sm_sasl_init __P((void)); 205 #endif /* SASL */ 206 207 #if USE_ENVIRON 208 envp = environ; 209 #endif /* USE_ENVIRON */ 210 211 /* turn off profiling */ 212 SM_PROF(0); 213 214 /* install default exception handler */ 215 sm_exc_newthread(fatal_error); 216 217 /* set the default in/out channel so errors reported to screen */ 218 InChannel = smioin; 219 OutChannel = smioout; 220 221 /* 222 ** Check to see if we reentered. 223 ** This would normally happen if e_putheader or e_putbody 224 ** were NULL when invoked. 225 */ 226 227 if (starttime != 0) 228 { 229 syserr("main: reentered!"); 230 abort(); 231 } 232 starttime = curtime(); 233 234 /* avoid null pointer dereferences */ 235 TermEscape.te_rv_on = TermEscape.te_under_on = TermEscape.te_normal = ""; 236 237 RealUid = getuid(); 238 RealGid = getgid(); 239 240 /* Check if sendmail is running with extra privs */ 241 extraprivs = (RealUid != 0 && 242 (geteuid() != getuid() || getegid() != getgid())); 243 244 CurrentPid = getpid(); 245 246 /* get whatever .cf file is right for the opmode */ 247 cftype = SM_GET_RIGHT_CF; 248 249 /* in 4.4BSD, the table can be huge; impose a reasonable limit */ 250 DtableSize = getdtsize(); 251 if (DtableSize > 256) 252 DtableSize = 256; 253 254 /* 255 ** Be sure we have enough file descriptors. 256 ** But also be sure that 0, 1, & 2 are open. 257 */ 258 259 /* reset errno and fill_errno; the latter is used way down below */ 260 errno = fill_errno = 0; 261 fill_fd(STDIN_FILENO, NULL); 262 if (errno != 0) 263 fill_errno = errno; 264 fill_fd(STDOUT_FILENO, NULL); 265 if (errno != 0) 266 fill_errno = errno; 267 fill_fd(STDERR_FILENO, NULL); 268 if (errno != 0) 269 fill_errno = errno; 270 271 sm_closefrom(STDERR_FILENO + 1, DtableSize); 272 errno = 0; 273 smdebug = NULL; 274 275 #if LOG 276 # ifndef SM_LOG_STR 277 # define SM_LOG_STR "sendmail" 278 # endif /* ! SM_LOG_STR */ 279 # ifdef LOG_MAIL 280 openlog(SM_LOG_STR, LOG_PID, LOG_MAIL); 281 # else /* LOG_MAIL */ 282 openlog(SM_LOG_STR, LOG_PID); 283 # endif /* LOG_MAIL */ 284 #endif /* LOG */ 285 286 /* 287 ** Seed the random number generator. 288 ** Used for queue file names, picking a queue directory, and 289 ** MX randomization. 290 */ 291 292 seed_random(); 293 294 /* do machine-dependent initializations */ 295 init_md(argc, argv); 296 297 298 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + SL_FUDGE + SLDLL; 299 300 /* reset status from syserr() calls for missing file descriptors */ 301 Errors = 0; 302 ExitStat = EX_OK; 303 304 SubmitMode = SUBMIT_UNKNOWN; 305 #if _FFR_LOCAL_DAEMON 306 LocalDaemon = false; 307 # if NETINET6 308 V6LoopbackAddrFound = false; 309 # endif /* NETINET6 */ 310 #endif /* _FFR_LOCAL_DAEMON */ 311 #if XDEBUG 312 checkfd012("after openlog"); 313 #endif /* XDEBUG */ 314 315 tTsetup(tTdvect, sizeof(tTdvect), "0-99.1,*_trace_*.1"); 316 317 #ifdef NGROUPS_MAX 318 /* save initial group set for future checks */ 319 i = getgroups(NGROUPS_MAX, InitialGidSet); 320 if (i <= 0) 321 { 322 InitialGidSet[0] = (GID_T) -1; 323 i = 0; 324 } 325 while (i < NGROUPS_MAX) 326 InitialGidSet[i++] = InitialGidSet[0]; 327 #endif /* NGROUPS_MAX */ 328 329 /* drop group id privileges (RunAsUser not yet set) */ 330 dp = drop_privileges(false); 331 setstat(dp); 332 333 #ifdef SIGUSR1 334 /* Only allow root (or non-set-*-ID binaries) to use SIGUSR1 */ 335 if (!extraprivs) 336 { 337 /* arrange to dump state on user-1 signal */ 338 (void) sm_signal(SIGUSR1, sigusr1); 339 } 340 else 341 { 342 /* ignore user-1 signal */ 343 (void) sm_signal(SIGUSR1, SIG_IGN); 344 } 345 #endif /* SIGUSR1 */ 346 347 /* initialize for setproctitle */ 348 initsetproctitle(argc, argv, envp); 349 350 /* Handle any non-getoptable constructions. */ 351 obsolete(argv); 352 353 /* 354 ** Do a quick prescan of the argument list. 355 */ 356 357 358 /* find initial opMode */ 359 OpMode = MD_DELIVER; 360 av = argv; 361 p = strrchr(*av, '/'); 362 if (p++ == NULL) 363 p = *av; 364 if (strcmp(p, "newaliases") == 0) 365 OpMode = MD_INITALIAS; 366 else if (strcmp(p, "mailq") == 0) 367 OpMode = MD_PRINT; 368 else if (strcmp(p, "smtpd") == 0) 369 OpMode = MD_DAEMON; 370 else if (strcmp(p, "hoststat") == 0) 371 OpMode = MD_HOSTSTAT; 372 else if (strcmp(p, "purgestat") == 0) 373 OpMode = MD_PURGESTAT; 374 375 #if defined(__osf__) || defined(_AIX3) 376 # 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" 377 #endif /* defined(__osf__) || defined(_AIX3) */ 378 #if defined(sony_news) 379 # 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:" 380 #endif /* defined(sony_news) */ 381 #ifndef OPTIONS 382 # define OPTIONS "A:B:b:C:cD:d:e:F:f:Gh:IiL:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:" 383 #endif /* ! OPTIONS */ 384 385 /* Set to 0 to allow -b; need to check optarg before using it! */ 386 opterr = 0; 387 while ((j = getopt(argc, argv, OPTIONS)) != -1) 388 { 389 switch (j) 390 { 391 case 'b': /* operations mode */ 392 j = (optarg == NULL) ? ' ' : *optarg; 393 switch (j) 394 { 395 case MD_DAEMON: 396 case MD_FGDAEMON: 397 case MD_SMTP: 398 case MD_INITALIAS: 399 case MD_DELIVER: 400 case MD_VERIFY: 401 case MD_TEST: 402 case MD_PRINT: 403 case MD_PRINTNQE: 404 case MD_HOSTSTAT: 405 case MD_PURGESTAT: 406 case MD_ARPAFTP: 407 #if _FFR_CHECKCONFIG 408 case MD_CHECKCONFIG: 409 #endif /* _FFR_CHECKCONFIG */ 410 OpMode = j; 411 break; 412 413 #if _FFR_LOCAL_DAEMON 414 case MD_LOCAL: 415 OpMode = MD_DAEMON; 416 LocalDaemon = true; 417 break; 418 #endif /* _FFR_LOCAL_DAEMON */ 419 420 case MD_FREEZE: 421 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 422 "Frozen configurations unsupported\n"); 423 return EX_USAGE; 424 425 default: 426 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 427 "Invalid operation mode %c\n", 428 j); 429 return EX_USAGE; 430 } 431 break; 432 433 case 'D': 434 if (debug) 435 { 436 errno = 0; 437 syserr("-D file must be before -d"); 438 ExitStat = EX_USAGE; 439 break; 440 } 441 dp = drop_privileges(true); 442 setstat(dp); 443 smdebug = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, 444 optarg, SM_IO_APPEND, NULL); 445 if (smdebug == NULL) 446 { 447 syserr("cannot open %s", optarg); 448 ExitStat = EX_CANTCREAT; 449 break; 450 } 451 sm_debug_setfile(smdebug); 452 break; 453 454 case 'd': 455 debug = true; 456 tTflag(optarg); 457 (void) sm_io_setvbuf(sm_debug_file(), SM_TIME_DEFAULT, 458 (char *) NULL, SM_IO_NBF, 459 SM_IO_BUFSIZ); 460 break; 461 462 case 'G': /* relay (gateway) submission */ 463 SubmitMode = SUBMIT_MTA; 464 break; 465 466 case 'L': 467 if (optarg == NULL) 468 { 469 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 470 "option requires an argument -- '%c'", 471 (char) j); 472 return EX_USAGE; 473 } 474 j = SM_MIN(strlen(optarg), 32) + 1; 475 sysloglabel = xalloc(j); 476 (void) sm_strlcpy(sysloglabel, optarg, j); 477 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + 478 SL_FUDGE + j; 479 break; 480 481 case 'Q': 482 case 'q': 483 /* just check if it is there */ 484 queuerun = true; 485 break; 486 } 487 } 488 opterr = 1; 489 490 /* Don't leak queue information via debug flags */ 491 if (extraprivs && queuerun && debug) 492 { 493 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 494 "WARNING: Can not use -d with -q. Disabling debugging.\n"); 495 sm_debug_close(); 496 sm_debug_setfile(NULL); 497 (void) memset(tTdvect, '\0', sizeof(tTdvect)); 498 } 499 500 #if LOG 501 if (sysloglabel != NULL) 502 { 503 /* Sanitize the string */ 504 for (p = sysloglabel; *p != '\0'; p++) 505 { 506 if (!isascii(*p) || !isprint(*p) || *p == '%') 507 *p = '*'; 508 } 509 closelog(); 510 # ifdef LOG_MAIL 511 openlog(sysloglabel, LOG_PID, LOG_MAIL); 512 # else /* LOG_MAIL */ 513 openlog(sysloglabel, LOG_PID); 514 # endif /* LOG_MAIL */ 515 } 516 #endif /* LOG */ 517 518 /* set up the blank envelope */ 519 BlankEnvelope.e_puthdr = putheader; 520 BlankEnvelope.e_putbody = putbody; 521 BlankEnvelope.e_xfp = NULL; 522 STRUCTCOPY(NullAddress, BlankEnvelope.e_from); 523 CurEnv = &BlankEnvelope; 524 STRUCTCOPY(NullAddress, MainEnvelope.e_from); 525 526 /* 527 ** Set default values for variables. 528 ** These cannot be in initialized data space. 529 */ 530 531 setdefaults(&BlankEnvelope); 532 initmacros(&BlankEnvelope); 533 534 /* reset macro */ 535 set_op_mode(OpMode); 536 if (OpMode == MD_DAEMON) 537 DaemonPid = CurrentPid; /* needed for finis() to work */ 538 539 pw = sm_getpwuid(RealUid); 540 if (pw != NULL) 541 (void) sm_strlcpy(rnamebuf, pw->pw_name, sizeof(rnamebuf)); 542 else 543 (void) sm_snprintf(rnamebuf, sizeof(rnamebuf), "Unknown UID %d", 544 (int) RealUid); 545 546 RealUserName = rnamebuf; 547 548 if (tTd(0, 101)) 549 { 550 sm_dprintf("Version %s\n", Version); 551 finis(false, true, EX_OK); 552 /* NOTREACHED */ 553 } 554 555 /* 556 ** if running non-set-user-ID binary as non-root, pretend 557 ** we are the RunAsUid 558 */ 559 560 if (RealUid != 0 && geteuid() == RealUid) 561 { 562 if (tTd(47, 1)) 563 sm_dprintf("Non-set-user-ID binary: RunAsUid = RealUid = %d\n", 564 (int) RealUid); 565 RunAsUid = RealUid; 566 } 567 else if (geteuid() != 0) 568 RunAsUid = geteuid(); 569 570 EffGid = getegid(); 571 if (RealUid != 0 && EffGid == RealGid) 572 RunAsGid = RealGid; 573 574 if (tTd(47, 5)) 575 { 576 sm_dprintf("main: e/ruid = %d/%d e/rgid = %d/%d\n", 577 (int) geteuid(), (int) getuid(), 578 (int) getegid(), (int) getgid()); 579 sm_dprintf("main: RunAsUser = %d:%d\n", 580 (int) RunAsUid, (int) RunAsGid); 581 } 582 583 /* save command line arguments */ 584 j = 0; 585 for (av = argv; *av != NULL; ) 586 j += strlen(*av++) + 1; 587 SaveArgv = (char **) xalloc(sizeof(char *) * (argc + 1)); 588 CommandLineArgs = xalloc(j); 589 p = CommandLineArgs; 590 for (av = argv, i = 0; *av != NULL; ) 591 { 592 int h; 593 594 SaveArgv[i++] = newstr(*av); 595 if (av != argv) 596 *p++ = ' '; 597 (void) sm_strlcpy(p, *av++, j); 598 h = strlen(p); 599 p += h; 600 j -= h + 1; 601 } 602 SaveArgv[i] = NULL; 603 604 if (tTd(0, 1)) 605 { 606 extern char *CompileOptions[]; 607 608 sm_dprintf("Version %s\n Compiled with:", Version); 609 sm_printoptions(CompileOptions); 610 } 611 if (tTd(0, 10)) 612 { 613 extern char *OsCompileOptions[]; 614 615 sm_dprintf(" OS Defines:"); 616 sm_printoptions(OsCompileOptions); 617 #ifdef _PATH_UNIX 618 sm_dprintf("Kernel symbols:\t%s\n", _PATH_UNIX); 619 #endif /* _PATH_UNIX */ 620 621 sm_dprintf(" Conf file:\t%s (default for MSP)\n", 622 getcfname(OpMode, SubmitMode, SM_GET_SUBMIT_CF, 623 conffile)); 624 sm_dprintf(" Conf file:\t%s (default for MTA)\n", 625 getcfname(OpMode, SubmitMode, SM_GET_SENDMAIL_CF, 626 conffile)); 627 sm_dprintf(" Pid file:\t%s (default)\n", PidFile); 628 } 629 630 if (tTd(0, 12)) 631 { 632 extern char *SmCompileOptions[]; 633 634 sm_dprintf(" libsm Defines:"); 635 sm_printoptions(SmCompileOptions); 636 } 637 638 if (tTd(0, 13)) 639 { 640 extern char *FFRCompileOptions[]; 641 642 sm_dprintf(" FFR Defines:"); 643 sm_printoptions(FFRCompileOptions); 644 } 645 646 /* clear sendmail's environment */ 647 ExternalEnviron = environ; 648 emptyenviron[0] = NULL; 649 environ = emptyenviron; 650 651 /* 652 ** restore any original TZ setting until TimeZoneSpec has been 653 ** determined - or early log messages may get bogus time stamps 654 */ 655 656 if ((p = getextenv("TZ")) != NULL) 657 { 658 char *tz; 659 int tzlen; 660 661 /* XXX check for reasonable length? */ 662 tzlen = strlen(p) + 4; 663 tz = xalloc(tzlen); 664 (void) sm_strlcpyn(tz, tzlen, 2, "TZ=", p); 665 666 /* XXX check return code? */ 667 (void) putenv(tz); 668 } 669 670 /* prime the child environment */ 671 sm_setuserenv("AGENT", "sendmail"); 672 673 (void) sm_signal(SIGPIPE, SIG_IGN); 674 OldUmask = umask(022); 675 FullName = getextenv("NAME"); 676 if (FullName != NULL) 677 FullName = newstr(FullName); 678 679 /* 680 ** Initialize name server if it is going to be used. 681 */ 682 683 #if NAMED_BIND 684 if (!bitset(RES_INIT, _res.options)) 685 (void) res_init(); 686 if (tTd(8, 8)) 687 _res.options |= RES_DEBUG; 688 else 689 _res.options &= ~RES_DEBUG; 690 # ifdef RES_NOALIASES 691 _res.options |= RES_NOALIASES; 692 # endif /* RES_NOALIASES */ 693 TimeOuts.res_retry[RES_TO_DEFAULT] = _res.retry; 694 TimeOuts.res_retry[RES_TO_FIRST] = _res.retry; 695 TimeOuts.res_retry[RES_TO_NORMAL] = _res.retry; 696 TimeOuts.res_retrans[RES_TO_DEFAULT] = _res.retrans; 697 TimeOuts.res_retrans[RES_TO_FIRST] = _res.retrans; 698 TimeOuts.res_retrans[RES_TO_NORMAL] = _res.retrans; 699 #endif /* NAMED_BIND */ 700 701 errno = 0; 702 from = NULL; 703 704 /* initialize some macros, etc. */ 705 init_vendor_macros(&BlankEnvelope); 706 707 /* version */ 708 macdefine(&BlankEnvelope.e_macro, A_PERM, 'v', Version); 709 710 /* hostname */ 711 hp = myhostname(jbuf, sizeof(jbuf)); 712 if (jbuf[0] != '\0') 713 { 714 struct utsname utsname; 715 716 if (tTd(0, 4)) 717 sm_dprintf("Canonical name: %s\n", jbuf); 718 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'w', jbuf); 719 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'j', jbuf); 720 setclass('w', jbuf); 721 722 p = strchr(jbuf, '.'); 723 if (p != NULL && p[1] != '\0') 724 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'm', &p[1]); 725 726 if (uname(&utsname) >= 0) 727 p = utsname.nodename; 728 else 729 { 730 if (tTd(0, 22)) 731 sm_dprintf("uname failed (%s)\n", 732 sm_errstring(errno)); 733 makelower(jbuf); 734 p = jbuf; 735 } 736 if (tTd(0, 4)) 737 sm_dprintf(" UUCP nodename: %s\n", p); 738 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'k', p); 739 setclass('k', p); 740 setclass('w', p); 741 } 742 if (hp != NULL) 743 { 744 for (av = hp->h_aliases; av != NULL && *av != NULL; av++) 745 { 746 if (tTd(0, 4)) 747 sm_dprintf("\ta.k.a.: %s\n", *av); 748 setclass('w', *av); 749 } 750 #if NETINET || NETINET6 751 for (i = 0; i >= 0 && hp->h_addr_list[i] != NULL; i++) 752 { 753 # if NETINET6 754 char *addr; 755 char buf6[INET6_ADDRSTRLEN]; 756 struct in6_addr ia6; 757 # endif /* NETINET6 */ 758 # if NETINET 759 struct in_addr ia; 760 # endif /* NETINET */ 761 char ipbuf[103]; 762 763 ipbuf[0] = '\0'; 764 switch (hp->h_addrtype) 765 { 766 # if NETINET 767 case AF_INET: 768 if (hp->h_length != INADDRSZ) 769 break; 770 771 memmove(&ia, hp->h_addr_list[i], INADDRSZ); 772 (void) sm_snprintf(ipbuf, sizeof(ipbuf), 773 "[%.100s]", inet_ntoa(ia)); 774 break; 775 # endif /* NETINET */ 776 777 # if NETINET6 778 case AF_INET6: 779 if (hp->h_length != IN6ADDRSZ) 780 break; 781 782 memmove(&ia6, hp->h_addr_list[i], IN6ADDRSZ); 783 addr = anynet_ntop(&ia6, buf6, sizeof(buf6)); 784 if (addr != NULL) 785 (void) sm_snprintf(ipbuf, sizeof(ipbuf), 786 "[%.100s]", addr); 787 break; 788 # endif /* NETINET6 */ 789 } 790 if (ipbuf[0] == '\0') 791 break; 792 793 if (tTd(0, 4)) 794 sm_dprintf("\ta.k.a.: %s\n", ipbuf); 795 setclass('w', ipbuf); 796 } 797 #endif /* NETINET || NETINET6 */ 798 #if NETINET6 799 freehostent(hp); 800 hp = NULL; 801 #endif /* NETINET6 */ 802 } 803 804 /* current time */ 805 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'b', arpadate((char *) NULL)); 806 807 /* current load average */ 808 sm_getla(); 809 810 QueueLimitRecipient = (QUEUE_CHAR *) NULL; 811 QueueLimitSender = (QUEUE_CHAR *) NULL; 812 QueueLimitId = (QUEUE_CHAR *) NULL; 813 QueueLimitQuarantine = (QUEUE_CHAR *) NULL; 814 815 /* 816 ** Crack argv. 817 */ 818 819 optind = 1; 820 while ((j = getopt(argc, argv, OPTIONS)) != -1) 821 { 822 switch (j) 823 { 824 case 'b': /* operations mode */ 825 /* already done */ 826 break; 827 828 case 'A': /* use Alternate sendmail/submit.cf */ 829 cftype = optarg[0] == 'c' ? SM_GET_SUBMIT_CF 830 : SM_GET_SENDMAIL_CF; 831 break; 832 833 case 'B': /* body type */ 834 CHECK_AGAINST_OPMODE(j); 835 BlankEnvelope.e_bodytype = newstr(optarg); 836 break; 837 838 case 'C': /* select configuration file (already done) */ 839 if (RealUid != 0) 840 warn_C_flag = true; 841 conffile = newstr(optarg); 842 dp = drop_privileges(true); 843 setstat(dp); 844 safecf = false; 845 break; 846 847 case 'D': 848 case 'd': /* debugging */ 849 /* already done */ 850 break; 851 852 case 'f': /* from address */ 853 case 'r': /* obsolete -f flag */ 854 CHECK_AGAINST_OPMODE(j); 855 if (from != NULL) 856 { 857 usrerr("More than one \"from\" person"); 858 ExitStat = EX_USAGE; 859 break; 860 } 861 if (optarg[0] == '\0') 862 from = newstr("<>"); 863 else 864 from = newstr(denlstring(optarg, true, true)); 865 if (strcmp(RealUserName, from) != 0) 866 warn_f_flag = j; 867 break; 868 869 case 'F': /* set full name */ 870 CHECK_AGAINST_OPMODE(j); 871 FullName = newstr(optarg); 872 break; 873 874 case 'G': /* relay (gateway) submission */ 875 /* already set */ 876 CHECK_AGAINST_OPMODE(j); 877 break; 878 879 case 'h': /* hop count */ 880 CHECK_AGAINST_OPMODE(j); 881 BlankEnvelope.e_hopcount = (short) strtol(optarg, &ep, 882 10); 883 (void) sm_snprintf(buf, sizeof(buf), "%d", 884 BlankEnvelope.e_hopcount); 885 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'c', buf); 886 887 if (*ep) 888 { 889 usrerr("Bad hop count (%s)", optarg); 890 ExitStat = EX_USAGE; 891 } 892 break; 893 894 case 'L': /* program label */ 895 /* already set */ 896 break; 897 898 case 'n': /* don't alias */ 899 CHECK_AGAINST_OPMODE(j); 900 NoAlias = true; 901 break; 902 903 case 'N': /* delivery status notifications */ 904 CHECK_AGAINST_OPMODE(j); 905 DefaultNotify |= QHASNOTIFY; 906 macdefine(&BlankEnvelope.e_macro, A_TEMP, 907 macid("{dsn_notify}"), optarg); 908 if (sm_strcasecmp(optarg, "never") == 0) 909 break; 910 for (p = optarg; p != NULL; optarg = p) 911 { 912 p = strchr(p, ','); 913 if (p != NULL) 914 *p++ = '\0'; 915 if (sm_strcasecmp(optarg, "success") == 0) 916 DefaultNotify |= QPINGONSUCCESS; 917 else if (sm_strcasecmp(optarg, "failure") == 0) 918 DefaultNotify |= QPINGONFAILURE; 919 else if (sm_strcasecmp(optarg, "delay") == 0) 920 DefaultNotify |= QPINGONDELAY; 921 else 922 { 923 usrerr("Invalid -N argument"); 924 ExitStat = EX_USAGE; 925 } 926 } 927 break; 928 929 case 'o': /* set option */ 930 setoption(*optarg, optarg + 1, false, true, 931 &BlankEnvelope); 932 break; 933 934 case 'O': /* set option (long form) */ 935 setoption(' ', optarg, false, true, &BlankEnvelope); 936 break; 937 938 case 'p': /* set protocol */ 939 CHECK_AGAINST_OPMODE(j); 940 p = strchr(optarg, ':'); 941 if (p != NULL) 942 { 943 *p++ = '\0'; 944 if (*p != '\0') 945 { 946 i = strlen(p) + 1; 947 ep = sm_malloc_x(i); 948 cleanstrcpy(ep, p, i); 949 macdefine(&BlankEnvelope.e_macro, 950 A_HEAP, 's', ep); 951 } 952 } 953 if (*optarg != '\0') 954 { 955 i = strlen(optarg) + 1; 956 ep = sm_malloc_x(i); 957 cleanstrcpy(ep, optarg, i); 958 macdefine(&BlankEnvelope.e_macro, A_HEAP, 959 'r', ep); 960 } 961 break; 962 963 case 'Q': /* change quarantining on queued items */ 964 /* sanity check */ 965 if (OpMode != MD_DELIVER && 966 OpMode != MD_QUEUERUN) 967 { 968 usrerr("Can not use -Q with -b%c", OpMode); 969 ExitStat = EX_USAGE; 970 break; 971 } 972 973 if (OpMode == MD_DELIVER) 974 set_op_mode(MD_QUEUERUN); 975 976 FullName = NULL; 977 978 quarantining = newstr(optarg); 979 break; 980 981 case 'q': /* run queue files at intervals */ 982 /* sanity check */ 983 if (OpMode != MD_DELIVER && 984 OpMode != MD_DAEMON && 985 OpMode != MD_FGDAEMON && 986 OpMode != MD_PRINT && 987 OpMode != MD_PRINTNQE && 988 OpMode != MD_QUEUERUN) 989 { 990 usrerr("Can not use -q with -b%c", OpMode); 991 ExitStat = EX_USAGE; 992 break; 993 } 994 995 /* don't override -bd, -bD or -bp */ 996 if (OpMode == MD_DELIVER) 997 set_op_mode(MD_QUEUERUN); 998 999 FullName = NULL; 1000 negate = optarg[0] == '!'; 1001 if (negate) 1002 { 1003 /* negate meaning of pattern match */ 1004 optarg++; /* skip '!' for next switch */ 1005 } 1006 1007 switch (optarg[0]) 1008 { 1009 case 'G': /* Limit by queue group name */ 1010 if (negate) 1011 { 1012 usrerr("Can not use -q!G"); 1013 ExitStat = EX_USAGE; 1014 break; 1015 } 1016 if (queuegroup != NULL) 1017 { 1018 usrerr("Can not use multiple -qG options"); 1019 ExitStat = EX_USAGE; 1020 break; 1021 } 1022 queuegroup = newstr(&optarg[1]); 1023 break; 1024 1025 case 'I': /* Limit by ID */ 1026 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1027 new->queue_match = newstr(&optarg[1]); 1028 new->queue_negate = negate; 1029 new->queue_next = QueueLimitId; 1030 QueueLimitId = new; 1031 break; 1032 1033 case 'R': /* Limit by recipient */ 1034 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1035 new->queue_match = newstr(&optarg[1]); 1036 new->queue_negate = negate; 1037 new->queue_next = QueueLimitRecipient; 1038 QueueLimitRecipient = new; 1039 break; 1040 1041 case 'S': /* Limit by sender */ 1042 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1043 new->queue_match = newstr(&optarg[1]); 1044 new->queue_negate = negate; 1045 new->queue_next = QueueLimitSender; 1046 QueueLimitSender = new; 1047 break; 1048 1049 case 'f': /* foreground queue run */ 1050 foregroundqueue = true; 1051 break; 1052 1053 case 'Q': /* Limit by quarantine message */ 1054 if (optarg[1] != '\0') 1055 { 1056 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1057 new->queue_match = newstr(&optarg[1]); 1058 new->queue_negate = negate; 1059 new->queue_next = QueueLimitQuarantine; 1060 QueueLimitQuarantine = new; 1061 } 1062 QueueMode = QM_QUARANTINE; 1063 break; 1064 1065 case 'L': /* act on lost items */ 1066 QueueMode = QM_LOST; 1067 break; 1068 1069 case 'p': /* Persistent queue */ 1070 queuepersistent = true; 1071 if (QueueIntvl == 0) 1072 QueueIntvl = 1; 1073 if (optarg[1] == '\0') 1074 break; 1075 ++optarg; 1076 /* FALLTHROUGH */ 1077 1078 default: 1079 i = Errors; 1080 QueueIntvl = convtime(optarg, 'm'); 1081 if (QueueIntvl < 0) 1082 { 1083 usrerr("Invalid -q value"); 1084 ExitStat = EX_USAGE; 1085 } 1086 1087 /* check for bad conversion */ 1088 if (i < Errors) 1089 ExitStat = EX_USAGE; 1090 break; 1091 } 1092 break; 1093 1094 case 'R': /* DSN RET: what to return */ 1095 CHECK_AGAINST_OPMODE(j); 1096 if (bitset(EF_RET_PARAM, BlankEnvelope.e_flags)) 1097 { 1098 usrerr("Duplicate -R flag"); 1099 ExitStat = EX_USAGE; 1100 break; 1101 } 1102 BlankEnvelope.e_flags |= EF_RET_PARAM; 1103 if (sm_strcasecmp(optarg, "hdrs") == 0) 1104 BlankEnvelope.e_flags |= EF_NO_BODY_RETN; 1105 else if (sm_strcasecmp(optarg, "full") != 0) 1106 { 1107 usrerr("Invalid -R value"); 1108 ExitStat = EX_USAGE; 1109 } 1110 macdefine(&BlankEnvelope.e_macro, A_TEMP, 1111 macid("{dsn_ret}"), optarg); 1112 break; 1113 1114 case 't': /* read recipients from message */ 1115 CHECK_AGAINST_OPMODE(j); 1116 GrabTo = true; 1117 break; 1118 1119 case 'V': /* DSN ENVID: set "original" envelope id */ 1120 CHECK_AGAINST_OPMODE(j); 1121 if (!xtextok(optarg)) 1122 { 1123 usrerr("Invalid syntax in -V flag"); 1124 ExitStat = EX_USAGE; 1125 } 1126 else 1127 { 1128 BlankEnvelope.e_envid = newstr(optarg); 1129 macdefine(&BlankEnvelope.e_macro, A_TEMP, 1130 macid("{dsn_envid}"), optarg); 1131 } 1132 break; 1133 1134 case 'X': /* traffic log file */ 1135 dp = drop_privileges(true); 1136 setstat(dp); 1137 if (stat(optarg, &traf_st) == 0 && 1138 S_ISFIFO(traf_st.st_mode)) 1139 TrafficLogFile = sm_io_open(SmFtStdio, 1140 SM_TIME_DEFAULT, 1141 optarg, 1142 SM_IO_WRONLY, NULL); 1143 else 1144 TrafficLogFile = sm_io_open(SmFtStdio, 1145 SM_TIME_DEFAULT, 1146 optarg, 1147 SM_IO_APPEND, NULL); 1148 if (TrafficLogFile == NULL) 1149 { 1150 syserr("cannot open %s", optarg); 1151 ExitStat = EX_CANTCREAT; 1152 break; 1153 } 1154 (void) sm_io_setvbuf(TrafficLogFile, SM_TIME_DEFAULT, 1155 NULL, SM_IO_LBF, 0); 1156 break; 1157 1158 /* compatibility flags */ 1159 case 'c': /* connect to non-local mailers */ 1160 case 'i': /* don't let dot stop me */ 1161 case 'm': /* send to me too */ 1162 case 'T': /* set timeout interval */ 1163 case 'v': /* give blow-by-blow description */ 1164 setoption(j, "T", false, true, &BlankEnvelope); 1165 break; 1166 1167 case 'e': /* error message disposition */ 1168 case 'M': /* define macro */ 1169 setoption(j, optarg, false, true, &BlankEnvelope); 1170 break; 1171 1172 case 's': /* save From lines in headers */ 1173 setoption('f', "T", false, true, &BlankEnvelope); 1174 break; 1175 1176 #ifdef DBM 1177 case 'I': /* initialize alias DBM file */ 1178 set_op_mode(MD_INITALIAS); 1179 break; 1180 #endif /* DBM */ 1181 1182 #if defined(__osf__) || defined(_AIX3) 1183 case 'x': /* random flag that OSF/1 & AIX mailx passes */ 1184 break; 1185 #endif /* defined(__osf__) || defined(_AIX3) */ 1186 #if defined(sony_news) 1187 case 'E': 1188 case 'J': /* ignore flags for Japanese code conversion 1189 implemented on Sony NEWS */ 1190 break; 1191 #endif /* defined(sony_news) */ 1192 1193 default: 1194 finis(true, true, EX_USAGE); 1195 /* NOTREACHED */ 1196 break; 1197 } 1198 } 1199 1200 /* if we've had errors so far, exit now */ 1201 if ((ExitStat != EX_OK && OpMode != MD_TEST && OpMode != MD_CHECKCONFIG) || 1202 ExitStat == EX_OSERR) 1203 { 1204 finis(false, true, ExitStat); 1205 /* NOTREACHED */ 1206 } 1207 1208 if (bitset(SUBMIT_MTA, SubmitMode)) 1209 { 1210 /* If set daemon_flags on command line, don't reset it */ 1211 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL) 1212 macdefine(&BlankEnvelope.e_macro, A_PERM, 1213 macid("{daemon_flags}"), "CC f"); 1214 } 1215 else if (OpMode == MD_DELIVER || OpMode == MD_SMTP) 1216 { 1217 SubmitMode = SUBMIT_MSA; 1218 1219 /* If set daemon_flags on command line, don't reset it */ 1220 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL) 1221 macdefine(&BlankEnvelope.e_macro, A_PERM, 1222 macid("{daemon_flags}"), "c u"); 1223 } 1224 1225 /* 1226 ** Do basic initialization. 1227 ** Read system control file. 1228 ** Extract special fields for local use. 1229 */ 1230 1231 #if XDEBUG 1232 checkfd012("before readcf"); 1233 #endif /* XDEBUG */ 1234 vendor_pre_defaults(&BlankEnvelope); 1235 1236 readcf(getcfname(OpMode, SubmitMode, cftype, conffile), 1237 safecf, &BlankEnvelope); 1238 #if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) 1239 ConfigFileRead = true; 1240 #endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */ 1241 vendor_post_defaults(&BlankEnvelope); 1242 1243 /* now we can complain about missing fds */ 1244 if (MissingFds != 0 && LogLevel > 8) 1245 { 1246 char mbuf[MAXLINE]; 1247 1248 mbuf[0] = '\0'; 1249 if (bitset(1 << STDIN_FILENO, MissingFds)) 1250 (void) sm_strlcat(mbuf, ", stdin", sizeof(mbuf)); 1251 if (bitset(1 << STDOUT_FILENO, MissingFds)) 1252 (void) sm_strlcat(mbuf, ", stdout", sizeof(mbuf)); 1253 if (bitset(1 << STDERR_FILENO, MissingFds)) 1254 (void) sm_strlcat(mbuf, ", stderr", sizeof(mbuf)); 1255 1256 /* Notice: fill_errno is from high above: fill_fd() */ 1257 sm_syslog(LOG_WARNING, NOQID, 1258 "File descriptors missing on startup: %s; %s", 1259 &mbuf[2], sm_errstring(fill_errno)); 1260 } 1261 1262 /* Remove the ability for a normal user to send signals */ 1263 if (RealUid != 0 && RealUid != geteuid()) 1264 { 1265 uid_t new_uid = geteuid(); 1266 1267 #if HASSETREUID 1268 /* 1269 ** Since we can differentiate between uid and euid, 1270 ** make the uid a different user so the real user 1271 ** can't send signals. However, it doesn't need to be 1272 ** root (euid has root). 1273 */ 1274 1275 if (new_uid == 0) 1276 new_uid = DefUid; 1277 if (tTd(47, 5)) 1278 sm_dprintf("Changing real uid to %d\n", (int) new_uid); 1279 if (setreuid(new_uid, geteuid()) < 0) 1280 { 1281 syserr("main: setreuid(%d, %d) failed", 1282 (int) new_uid, (int) geteuid()); 1283 finis(false, true, EX_OSERR); 1284 /* NOTREACHED */ 1285 } 1286 if (tTd(47, 10)) 1287 sm_dprintf("Now running as e/ruid %d:%d\n", 1288 (int) geteuid(), (int) getuid()); 1289 #else /* HASSETREUID */ 1290 /* 1291 ** Have to change both effective and real so need to 1292 ** change them both to effective to keep privs. 1293 */ 1294 1295 if (tTd(47, 5)) 1296 sm_dprintf("Changing uid to %d\n", (int) new_uid); 1297 if (setuid(new_uid) < 0) 1298 { 1299 syserr("main: setuid(%d) failed", (int) new_uid); 1300 finis(false, true, EX_OSERR); 1301 /* NOTREACHED */ 1302 } 1303 if (tTd(47, 10)) 1304 sm_dprintf("Now running as e/ruid %d:%d\n", 1305 (int) geteuid(), (int) getuid()); 1306 #endif /* HASSETREUID */ 1307 } 1308 1309 #if NAMED_BIND 1310 if (FallbackMX != NULL) 1311 (void) getfallbackmxrr(FallbackMX); 1312 #endif /* NAMED_BIND */ 1313 1314 if (SuperSafe == SAFE_INTERACTIVE && !SM_IS_INTERACTIVE(CurEnv->e_sendmode)) 1315 { 1316 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1317 "WARNING: SuperSafe=interactive should only be used with\n DeliveryMode=interactive\n"); 1318 } 1319 1320 if (UseMSP && (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON)) 1321 { 1322 usrerr("Mail submission program cannot be used as daemon"); 1323 finis(false, true, EX_USAGE); 1324 } 1325 1326 if (OpMode == MD_DELIVER || OpMode == MD_SMTP || 1327 OpMode == MD_QUEUERUN || OpMode == MD_ARPAFTP || 1328 OpMode == MD_DAEMON || OpMode == MD_FGDAEMON) 1329 makeworkgroups(); 1330 1331 /* set up the basic signal handlers */ 1332 if (sm_signal(SIGINT, SIG_IGN) != SIG_IGN) 1333 (void) sm_signal(SIGINT, intsig); 1334 (void) sm_signal(SIGTERM, intsig); 1335 1336 /* Enforce use of local time (null string overrides this) */ 1337 if (TimeZoneSpec == NULL) 1338 unsetenv("TZ"); 1339 else if (TimeZoneSpec[0] != '\0') 1340 sm_setuserenv("TZ", TimeZoneSpec); 1341 else 1342 sm_setuserenv("TZ", NULL); 1343 tzset(); 1344 1345 /* initialize mailbox database */ 1346 i = sm_mbdb_initialize(Mbdb); 1347 if (i != EX_OK) 1348 { 1349 usrerr("Can't initialize mailbox database \"%s\": %s", 1350 Mbdb, sm_strexit(i)); 1351 ExitStat = i; 1352 } 1353 1354 /* avoid denial-of-service attacks */ 1355 resetlimits(); 1356 1357 if (OpMode == MD_TEST) 1358 { 1359 /* can't be done after readcf if RunAs* is used */ 1360 dp = drop_privileges(true); 1361 if (dp != EX_OK) 1362 { 1363 finis(false, true, dp); 1364 /* NOTREACHED */ 1365 } 1366 } 1367 else if (OpMode != MD_DAEMON && OpMode != MD_FGDAEMON) 1368 { 1369 /* drop privileges -- daemon mode done after socket/bind */ 1370 dp = drop_privileges(false); 1371 setstat(dp); 1372 if (dp == EX_OK && UseMSP && (geteuid() == 0 || getuid() == 0)) 1373 { 1374 usrerr("Mail submission program must have RunAsUser set to non root user"); 1375 finis(false, true, EX_CONFIG); 1376 /* NOTREACHED */ 1377 } 1378 } 1379 1380 #if NAMED_BIND 1381 _res.retry = TimeOuts.res_retry[RES_TO_DEFAULT]; 1382 _res.retrans = TimeOuts.res_retrans[RES_TO_DEFAULT]; 1383 #endif /* NAMED_BIND */ 1384 1385 /* 1386 ** Find our real host name for future logging. 1387 */ 1388 1389 authinfo = getauthinfo(STDIN_FILENO, &forged); 1390 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 1391 1392 /* suppress error printing if errors mailed back or whatever */ 1393 if (BlankEnvelope.e_errormode != EM_PRINT) 1394 HoldErrs = true; 1395 1396 /* set up the $=m class now, after .cf has a chance to redefine $m */ 1397 expand("\201m", jbuf, sizeof(jbuf), &BlankEnvelope); 1398 if (jbuf[0] != '\0') 1399 setclass('m', jbuf); 1400 1401 /* probe interfaces and locate any additional names */ 1402 if (DontProbeInterfaces != DPI_PROBENONE) 1403 load_if_names(); 1404 1405 if (tTd(0, 10)) 1406 { 1407 char pidpath[MAXPATHLEN]; 1408 1409 /* Now we know which .cf file we use */ 1410 sm_dprintf(" Conf file:\t%s (selected)\n", 1411 getcfname(OpMode, SubmitMode, cftype, conffile)); 1412 expand(PidFile, pidpath, sizeof(pidpath), &BlankEnvelope); 1413 sm_dprintf(" Pid file:\t%s (selected)\n", pidpath); 1414 } 1415 1416 if (tTd(0, 1)) 1417 { 1418 sm_dprintf("\n============ SYSTEM IDENTITY (after readcf) ============"); 1419 sm_dprintf("\n (short domain name) $w = "); 1420 xputs(sm_debug_file(), macvalue('w', &BlankEnvelope)); 1421 sm_dprintf("\n (canonical domain name) $j = "); 1422 xputs(sm_debug_file(), macvalue('j', &BlankEnvelope)); 1423 sm_dprintf("\n (subdomain name) $m = "); 1424 xputs(sm_debug_file(), macvalue('m', &BlankEnvelope)); 1425 sm_dprintf("\n (node name) $k = "); 1426 xputs(sm_debug_file(), macvalue('k', &BlankEnvelope)); 1427 sm_dprintf("\n========================================================\n\n"); 1428 } 1429 1430 /* 1431 ** Do more command line checking -- these are things that 1432 ** have to modify the results of reading the config file. 1433 */ 1434 1435 /* process authorization warnings from command line */ 1436 if (warn_C_flag) 1437 auth_warning(&BlankEnvelope, "Processed by %s with -C %s", 1438 RealUserName, conffile); 1439 if (Warn_Q_option && !wordinclass(RealUserName, 't')) 1440 auth_warning(&BlankEnvelope, "Processed from queue %s", 1441 QueueDir); 1442 if (sysloglabel != NULL && !wordinclass(RealUserName, 't') && 1443 RealUid != 0 && RealUid != TrustedUid && LogLevel > 1) 1444 sm_syslog(LOG_WARNING, NOQID, "user %d changed syslog label", 1445 (int) RealUid); 1446 1447 /* check body type for legality */ 1448 i = check_bodytype(BlankEnvelope.e_bodytype); 1449 if (i == BODYTYPE_ILLEGAL) 1450 { 1451 usrerr("Illegal body type %s", BlankEnvelope.e_bodytype); 1452 BlankEnvelope.e_bodytype = NULL; 1453 } 1454 else if (i != BODYTYPE_NONE) 1455 SevenBitInput = (i == BODYTYPE_7BIT); 1456 1457 /* tweak default DSN notifications */ 1458 if (DefaultNotify == 0) 1459 DefaultNotify = QPINGONFAILURE|QPINGONDELAY; 1460 1461 /* check for sane configuration level */ 1462 if (ConfigLevel > MAXCONFIGLEVEL) 1463 { 1464 syserr("Warning: .cf version level (%d) exceeds sendmail version %s functionality (%d)", 1465 ConfigLevel, Version, MAXCONFIGLEVEL); 1466 } 1467 1468 /* need MCI cache to have persistence */ 1469 if (HostStatDir != NULL && MaxMciCache == 0) 1470 { 1471 HostStatDir = NULL; 1472 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1473 "Warning: HostStatusDirectory disabled with ConnectionCacheSize = 0\n"); 1474 } 1475 1476 /* need HostStatusDir in order to have SingleThreadDelivery */ 1477 if (SingleThreadDelivery && HostStatDir == NULL) 1478 { 1479 SingleThreadDelivery = false; 1480 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1481 "Warning: HostStatusDirectory required for SingleThreadDelivery\n"); 1482 } 1483 1484 #if _FFR_MEMSTAT 1485 j = sm_memstat_open(); 1486 if (j < 0 && (RefuseLowMem > 0 || QueueLowMem > 0) && LogLevel > 4) 1487 { 1488 sm_syslog(LOG_WARNING, NOQID, 1489 "cannot get memory statistics, settings ignored, error=%d" 1490 , j); 1491 } 1492 #endif /* _FFR_MEMSTAT */ 1493 1494 /* check for permissions */ 1495 if (RealUid != 0 && 1496 RealUid != TrustedUid) 1497 { 1498 char *action = NULL; 1499 1500 switch (OpMode) 1501 { 1502 case MD_QUEUERUN: 1503 if (quarantining != NULL) 1504 action = "quarantine jobs"; 1505 else 1506 { 1507 /* Normal users can do a single queue run */ 1508 if (QueueIntvl == 0) 1509 break; 1510 } 1511 1512 /* but not persistent queue runners */ 1513 if (action == NULL) 1514 action = "start a queue runner daemon"; 1515 /* FALLTHROUGH */ 1516 1517 case MD_PURGESTAT: 1518 if (action == NULL) 1519 action = "purge host status"; 1520 /* FALLTHROUGH */ 1521 1522 case MD_DAEMON: 1523 case MD_FGDAEMON: 1524 if (action == NULL) 1525 action = "run daemon"; 1526 1527 if (tTd(65, 1)) 1528 sm_dprintf("Deny user %d attempt to %s\n", 1529 (int) RealUid, action); 1530 1531 if (LogLevel > 1) 1532 sm_syslog(LOG_ALERT, NOQID, 1533 "user %d attempted to %s", 1534 (int) RealUid, action); 1535 HoldErrs = false; 1536 usrerr("Permission denied (real uid not trusted)"); 1537 finis(false, true, EX_USAGE); 1538 /* NOTREACHED */ 1539 break; 1540 1541 case MD_VERIFY: 1542 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags)) 1543 { 1544 /* 1545 ** If -bv and RestrictExpand, 1546 ** drop privs to prevent normal 1547 ** users from reading private 1548 ** aliases/forwards/:include:s 1549 */ 1550 1551 if (tTd(65, 1)) 1552 sm_dprintf("Drop privs for user %d attempt to expand (RestrictExpand)\n", 1553 (int) RealUid); 1554 1555 dp = drop_privileges(true); 1556 1557 /* Fake address safety */ 1558 if (tTd(65, 1)) 1559 sm_dprintf("Faking DontBlameSendmail=NonRootSafeAddr\n"); 1560 setbitn(DBS_NONROOTSAFEADDR, DontBlameSendmail); 1561 1562 if (dp != EX_OK) 1563 { 1564 if (tTd(65, 1)) 1565 sm_dprintf("Failed to drop privs for user %d attempt to expand, exiting\n", 1566 (int) RealUid); 1567 CurEnv->e_id = NULL; 1568 finis(true, true, dp); 1569 /* NOTREACHED */ 1570 } 1571 } 1572 break; 1573 1574 case MD_TEST: 1575 case MD_CHECKCONFIG: 1576 case MD_PRINT: 1577 case MD_PRINTNQE: 1578 case MD_FREEZE: 1579 case MD_HOSTSTAT: 1580 /* Nothing special to check */ 1581 break; 1582 1583 case MD_INITALIAS: 1584 if (!wordinclass(RealUserName, 't')) 1585 { 1586 if (tTd(65, 1)) 1587 sm_dprintf("Deny user %d attempt to rebuild the alias map\n", 1588 (int) RealUid); 1589 if (LogLevel > 1) 1590 sm_syslog(LOG_ALERT, NOQID, 1591 "user %d attempted to rebuild the alias map", 1592 (int) RealUid); 1593 HoldErrs = false; 1594 usrerr("Permission denied (real uid not trusted)"); 1595 finis(false, true, EX_USAGE); 1596 /* NOTREACHED */ 1597 } 1598 if (UseMSP) 1599 { 1600 HoldErrs = false; 1601 usrerr("User %d cannot rebuild aliases in mail submission program", 1602 (int) RealUid); 1603 finis(false, true, EX_USAGE); 1604 /* NOTREACHED */ 1605 } 1606 /* FALLTHROUGH */ 1607 1608 default: 1609 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags) && 1610 Verbose != 0) 1611 { 1612 /* 1613 ** If -v and RestrictExpand, reset 1614 ** Verbose to prevent normal users 1615 ** from seeing the expansion of 1616 ** aliases/forwards/:include:s 1617 */ 1618 1619 if (tTd(65, 1)) 1620 sm_dprintf("Dropping verbosity for user %d (RestrictExpand)\n", 1621 (int) RealUid); 1622 Verbose = 0; 1623 } 1624 break; 1625 } 1626 } 1627 1628 if (MeToo) 1629 BlankEnvelope.e_flags |= EF_METOO; 1630 1631 switch (OpMode) 1632 { 1633 case MD_TEST: 1634 /* don't have persistent host status in test mode */ 1635 HostStatDir = NULL; 1636 /* FALLTHROUGH */ 1637 1638 case MD_CHECKCONFIG: 1639 if (Verbose == 0) 1640 Verbose = 2; 1641 BlankEnvelope.e_errormode = EM_PRINT; 1642 HoldErrs = false; 1643 break; 1644 1645 case MD_VERIFY: 1646 BlankEnvelope.e_errormode = EM_PRINT; 1647 HoldErrs = false; 1648 /* arrange to exit cleanly on hangup signal */ 1649 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL) 1650 (void) sm_signal(SIGHUP, intsig); 1651 if (geteuid() != 0) 1652 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1653 "Notice: -bv may give misleading output for non-privileged user\n"); 1654 break; 1655 1656 case MD_FGDAEMON: 1657 run_in_foreground = true; 1658 set_op_mode(MD_DAEMON); 1659 /* FALLTHROUGH */ 1660 1661 case MD_DAEMON: 1662 vendor_daemon_setup(&BlankEnvelope); 1663 1664 /* remove things that don't make sense in daemon mode */ 1665 FullName = NULL; 1666 GrabTo = false; 1667 1668 /* arrange to restart on hangup signal */ 1669 if (SaveArgv[0] == NULL || SaveArgv[0][0] != '/') 1670 sm_syslog(LOG_WARNING, NOQID, 1671 "daemon invoked without full pathname; kill -1 won't work"); 1672 break; 1673 1674 case MD_INITALIAS: 1675 Verbose = 2; 1676 BlankEnvelope.e_errormode = EM_PRINT; 1677 HoldErrs = false; 1678 /* FALLTHROUGH */ 1679 1680 default: 1681 /* arrange to exit cleanly on hangup signal */ 1682 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL) 1683 (void) sm_signal(SIGHUP, intsig); 1684 break; 1685 } 1686 1687 /* special considerations for FullName */ 1688 if (FullName != NULL) 1689 { 1690 char *full = NULL; 1691 1692 /* full names can't have newlines */ 1693 if (strchr(FullName, '\n') != NULL) 1694 { 1695 full = newstr(denlstring(FullName, true, true)); 1696 FullName = full; 1697 } 1698 1699 /* check for characters that may have to be quoted */ 1700 if (!rfc822_string(FullName)) 1701 { 1702 /* 1703 ** Quote a full name with special characters 1704 ** as a comment so crackaddr() doesn't destroy 1705 ** the name portion of the address. 1706 */ 1707 1708 FullName = addquotes(FullName, NULL); 1709 if (full != NULL) 1710 sm_free(full); /* XXX */ 1711 } 1712 } 1713 1714 /* do heuristic mode adjustment */ 1715 if (Verbose) 1716 { 1717 /* turn off noconnect option */ 1718 setoption('c', "F", true, false, &BlankEnvelope); 1719 1720 /* turn on interactive delivery */ 1721 setoption('d', "", true, false, &BlankEnvelope); 1722 } 1723 1724 #ifdef VENDOR_CODE 1725 /* check for vendor mismatch */ 1726 if (VendorCode != VENDOR_CODE) 1727 { 1728 message("Warning: .cf file vendor code mismatch: sendmail expects vendor %s, .cf file vendor is %s", 1729 getvendor(VENDOR_CODE), getvendor(VendorCode)); 1730 } 1731 #endif /* VENDOR_CODE */ 1732 1733 /* check for out of date configuration level */ 1734 if (ConfigLevel < MAXCONFIGLEVEL) 1735 { 1736 message("Warning: .cf file is out of date: sendmail %s supports version %d, .cf file is version %d", 1737 Version, MAXCONFIGLEVEL, ConfigLevel); 1738 } 1739 1740 if (ConfigLevel < 3) 1741 UseErrorsTo = true; 1742 1743 /* set options that were previous macros */ 1744 if (SmtpGreeting == NULL) 1745 { 1746 if (ConfigLevel < 7 && 1747 (p = macvalue('e', &BlankEnvelope)) != NULL) 1748 SmtpGreeting = newstr(p); 1749 else 1750 SmtpGreeting = "\201j Sendmail \201v ready at \201b"; 1751 } 1752 if (UnixFromLine == NULL) 1753 { 1754 if (ConfigLevel < 7 && 1755 (p = macvalue('l', &BlankEnvelope)) != NULL) 1756 UnixFromLine = newstr(p); 1757 else 1758 UnixFromLine = "From \201g \201d"; 1759 } 1760 SmtpError[0] = '\0'; 1761 1762 /* our name for SMTP codes */ 1763 expand("\201j", jbuf, sizeof(jbuf), &BlankEnvelope); 1764 if (jbuf[0] == '\0') 1765 PSTRSET(MyHostName, "localhost"); 1766 else 1767 PSTRSET(MyHostName, jbuf); 1768 if (strchr(MyHostName, '.') == NULL) 1769 message("WARNING: local host name (%s) is not qualified; see cf/README: WHO AM I?", 1770 MyHostName); 1771 1772 /* make certain that this name is part of the $=w class */ 1773 setclass('w', MyHostName); 1774 1775 /* fill in the structure of the *default* queue */ 1776 st = stab("mqueue", ST_QUEUE, ST_FIND); 1777 if (st == NULL) 1778 syserr("No default queue (mqueue) defined"); 1779 else 1780 set_def_queueval(st->s_quegrp, true); 1781 1782 /* the indices of built-in mailers */ 1783 st = stab("local", ST_MAILER, ST_FIND); 1784 if (st != NULL) 1785 LocalMailer = st->s_mailer; 1786 else if (OpMode != MD_TEST || !warn_C_flag) 1787 syserr("No local mailer defined"); 1788 1789 st = stab("prog", ST_MAILER, ST_FIND); 1790 if (st == NULL) 1791 syserr("No prog mailer defined"); 1792 else 1793 { 1794 ProgMailer = st->s_mailer; 1795 clrbitn(M_MUSER, ProgMailer->m_flags); 1796 } 1797 1798 st = stab("*file*", ST_MAILER, ST_FIND); 1799 if (st == NULL) 1800 syserr("No *file* mailer defined"); 1801 else 1802 { 1803 FileMailer = st->s_mailer; 1804 clrbitn(M_MUSER, FileMailer->m_flags); 1805 } 1806 1807 st = stab("*include*", ST_MAILER, ST_FIND); 1808 if (st == NULL) 1809 syserr("No *include* mailer defined"); 1810 else 1811 InclMailer = st->s_mailer; 1812 1813 if (ConfigLevel < 6) 1814 { 1815 /* heuristic tweaking of local mailer for back compat */ 1816 if (LocalMailer != NULL) 1817 { 1818 setbitn(M_ALIASABLE, LocalMailer->m_flags); 1819 setbitn(M_HASPWENT, LocalMailer->m_flags); 1820 setbitn(M_TRYRULESET5, LocalMailer->m_flags); 1821 setbitn(M_CHECKINCLUDE, LocalMailer->m_flags); 1822 setbitn(M_CHECKPROG, LocalMailer->m_flags); 1823 setbitn(M_CHECKFILE, LocalMailer->m_flags); 1824 setbitn(M_CHECKUDB, LocalMailer->m_flags); 1825 } 1826 if (ProgMailer != NULL) 1827 setbitn(M_RUNASRCPT, ProgMailer->m_flags); 1828 if (FileMailer != NULL) 1829 setbitn(M_RUNASRCPT, FileMailer->m_flags); 1830 } 1831 if (ConfigLevel < 7) 1832 { 1833 if (LocalMailer != NULL) 1834 setbitn(M_VRFY250, LocalMailer->m_flags); 1835 if (ProgMailer != NULL) 1836 setbitn(M_VRFY250, ProgMailer->m_flags); 1837 if (FileMailer != NULL) 1838 setbitn(M_VRFY250, FileMailer->m_flags); 1839 } 1840 1841 /* MIME Content-Types that cannot be transfer encoded */ 1842 setclass('n', "multipart/signed"); 1843 1844 /* MIME message/xxx subtypes that can be treated as messages */ 1845 setclass('s', "rfc822"); 1846 1847 /* MIME Content-Transfer-Encodings that can be encoded */ 1848 setclass('e', "7bit"); 1849 setclass('e', "8bit"); 1850 setclass('e', "binary"); 1851 1852 #ifdef USE_B_CLASS 1853 /* MIME Content-Types that should be treated as binary */ 1854 setclass('b', "image"); 1855 setclass('b', "audio"); 1856 setclass('b', "video"); 1857 setclass('b', "application/octet-stream"); 1858 #endif /* USE_B_CLASS */ 1859 1860 /* MIME headers which have fields to check for overflow */ 1861 setclass(macid("{checkMIMEFieldHeaders}"), "content-disposition"); 1862 setclass(macid("{checkMIMEFieldHeaders}"), "content-type"); 1863 1864 /* MIME headers to check for length overflow */ 1865 setclass(macid("{checkMIMETextHeaders}"), "content-description"); 1866 1867 /* MIME headers to check for overflow and rebalance */ 1868 setclass(macid("{checkMIMEHeaders}"), "content-disposition"); 1869 setclass(macid("{checkMIMEHeaders}"), "content-id"); 1870 setclass(macid("{checkMIMEHeaders}"), "content-transfer-encoding"); 1871 setclass(macid("{checkMIMEHeaders}"), "content-type"); 1872 setclass(macid("{checkMIMEHeaders}"), "mime-version"); 1873 1874 /* Macros to save in the queue file -- don't remove any */ 1875 setclass(macid("{persistentMacros}"), "r"); 1876 setclass(macid("{persistentMacros}"), "s"); 1877 setclass(macid("{persistentMacros}"), "_"); 1878 setclass(macid("{persistentMacros}"), "{if_addr}"); 1879 setclass(macid("{persistentMacros}"), "{daemon_flags}"); 1880 1881 /* operate in queue directory */ 1882 if (QueueDir == NULL || *QueueDir == '\0') 1883 { 1884 if (OpMode != MD_TEST) 1885 { 1886 syserr("QueueDirectory (Q) option must be set"); 1887 ExitStat = EX_CONFIG; 1888 } 1889 } 1890 else 1891 { 1892 if (OpMode != MD_TEST) 1893 setup_queues(OpMode == MD_DAEMON); 1894 } 1895 1896 /* check host status directory for validity */ 1897 if (HostStatDir != NULL && !path_is_dir(HostStatDir, false)) 1898 { 1899 /* cannot use this value */ 1900 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1901 "Warning: Cannot use HostStatusDirectory = %s: %s\n", 1902 HostStatDir, sm_errstring(errno)); 1903 HostStatDir = NULL; 1904 } 1905 1906 if (OpMode == MD_QUEUERUN && 1907 RealUid != 0 && bitset(PRIV_RESTRICTQRUN, PrivacyFlags)) 1908 { 1909 struct stat stbuf; 1910 1911 /* check to see if we own the queue directory */ 1912 if (stat(".", &stbuf) < 0) 1913 syserr("main: cannot stat %s", QueueDir); 1914 if (stbuf.st_uid != RealUid) 1915 { 1916 /* nope, really a botch */ 1917 HoldErrs = false; 1918 usrerr("You do not have permission to process the queue"); 1919 finis(false, true, EX_NOPERM); 1920 /* NOTREACHED */ 1921 } 1922 } 1923 1924 #if MILTER 1925 /* sanity checks on milter filters */ 1926 if (OpMode == MD_DAEMON || OpMode == MD_SMTP) 1927 { 1928 milter_config(InputFilterList, InputFilters, MAXFILTERS); 1929 setup_daemon_milters(); 1930 } 1931 #endif /* MILTER */ 1932 1933 /* Convert queuegroup string to qgrp number */ 1934 if (queuegroup != NULL) 1935 { 1936 qgrp = name2qid(queuegroup); 1937 if (qgrp == NOQGRP) 1938 { 1939 HoldErrs = false; 1940 usrerr("Queue group %s unknown", queuegroup); 1941 finis(false, true, ExitStat); 1942 /* NOTREACHED */ 1943 } 1944 } 1945 1946 /* if checking config or have had errors so far, exit now */ 1947 if (OpMode == MD_CHECKCONFIG || (ExitStat != EX_OK && OpMode != MD_TEST)) 1948 { 1949 finis(false, true, ExitStat); 1950 /* NOTREACHED */ 1951 } 1952 1953 #if SASL 1954 /* sendmail specific SASL initialization */ 1955 sm_sasl_init(); 1956 #endif /* SASL */ 1957 1958 #if XDEBUG 1959 checkfd012("before main() initmaps"); 1960 #endif /* XDEBUG */ 1961 1962 /* 1963 ** Do operation-mode-dependent initialization. 1964 */ 1965 1966 switch (OpMode) 1967 { 1968 case MD_PRINT: 1969 /* print the queue */ 1970 HoldErrs = false; 1971 (void) dropenvelope(&BlankEnvelope, true, false); 1972 (void) sm_signal(SIGPIPE, sigpipe); 1973 if (qgrp != NOQGRP) 1974 { 1975 int j; 1976 1977 /* Selecting a particular queue group to run */ 1978 for (j = 0; j < Queue[qgrp]->qg_numqueues; j++) 1979 { 1980 if (StopRequest) 1981 stop_sendmail(); 1982 (void) print_single_queue(qgrp, j); 1983 } 1984 finis(false, true, EX_OK); 1985 /* NOTREACHED */ 1986 } 1987 printqueue(); 1988 finis(false, true, EX_OK); 1989 /* NOTREACHED */ 1990 break; 1991 1992 case MD_PRINTNQE: 1993 /* print number of entries in queue */ 1994 (void) dropenvelope(&BlankEnvelope, true, false); 1995 (void) sm_signal(SIGPIPE, sigpipe); 1996 printnqe(smioout, NULL); 1997 finis(false, true, EX_OK); 1998 /* NOTREACHED */ 1999 break; 2000 2001 case MD_QUEUERUN: 2002 /* only handle quarantining here */ 2003 if (quarantining == NULL) 2004 break; 2005 2006 if (QueueMode != QM_QUARANTINE && 2007 QueueMode != QM_NORMAL) 2008 { 2009 HoldErrs = false; 2010 usrerr("Can not use -Q with -q%c", QueueMode); 2011 ExitStat = EX_USAGE; 2012 finis(false, true, ExitStat); 2013 /* NOTREACHED */ 2014 } 2015 quarantine_queue(quarantining, qgrp); 2016 finis(false, true, EX_OK); 2017 break; 2018 2019 case MD_HOSTSTAT: 2020 (void) sm_signal(SIGPIPE, sigpipe); 2021 (void) mci_traverse_persistent(mci_print_persistent, NULL); 2022 finis(false, true, EX_OK); 2023 /* NOTREACHED */ 2024 break; 2025 2026 case MD_PURGESTAT: 2027 (void) mci_traverse_persistent(mci_purge_persistent, NULL); 2028 finis(false, true, EX_OK); 2029 /* NOTREACHED */ 2030 break; 2031 2032 case MD_INITALIAS: 2033 /* initialize maps */ 2034 initmaps(); 2035 finis(false, true, ExitStat); 2036 /* NOTREACHED */ 2037 break; 2038 2039 case MD_SMTP: 2040 case MD_DAEMON: 2041 /* reset DSN parameters */ 2042 DefaultNotify = QPINGONFAILURE|QPINGONDELAY; 2043 macdefine(&BlankEnvelope.e_macro, A_PERM, 2044 macid("{dsn_notify}"), NULL); 2045 BlankEnvelope.e_envid = NULL; 2046 macdefine(&BlankEnvelope.e_macro, A_PERM, 2047 macid("{dsn_envid}"), NULL); 2048 BlankEnvelope.e_flags &= ~(EF_RET_PARAM|EF_NO_BODY_RETN); 2049 macdefine(&BlankEnvelope.e_macro, A_PERM, 2050 macid("{dsn_ret}"), NULL); 2051 2052 /* don't open maps for daemon -- done below in child */ 2053 break; 2054 } 2055 2056 if (tTd(0, 15)) 2057 { 2058 /* print configuration table (or at least part of it) */ 2059 if (tTd(0, 90)) 2060 printrules(); 2061 for (i = 0; i < MAXMAILERS; i++) 2062 { 2063 if (Mailer[i] != NULL) 2064 printmailer(sm_debug_file(), Mailer[i]); 2065 } 2066 } 2067 2068 /* 2069 ** Switch to the main envelope. 2070 */ 2071 2072 CurEnv = newenvelope(&MainEnvelope, &BlankEnvelope, 2073 sm_rpool_new_x(NULL)); 2074 MainEnvelope.e_flags = BlankEnvelope.e_flags; 2075 2076 /* 2077 ** If test mode, read addresses from stdin and process. 2078 */ 2079 2080 if (OpMode == MD_TEST) 2081 { 2082 if (isatty(sm_io_getinfo(smioin, SM_IO_WHAT_FD, NULL))) 2083 Verbose = 2; 2084 2085 if (Verbose) 2086 { 2087 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2088 "ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n"); 2089 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2090 "Enter <ruleset> <address>\n"); 2091 } 2092 macdefine(&(MainEnvelope.e_macro), A_PERM, 2093 macid("{addr_type}"), "e r"); 2094 for (;;) 2095 { 2096 SM_TRY 2097 { 2098 (void) sm_signal(SIGINT, intindebug); 2099 (void) sm_releasesignal(SIGINT); 2100 if (Verbose == 2) 2101 (void) sm_io_fprintf(smioout, 2102 SM_TIME_DEFAULT, 2103 "> "); 2104 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 2105 if (sm_io_fgets(smioin, SM_TIME_DEFAULT, buf, 2106 sizeof(buf)) == NULL) 2107 testmodeline("/quit", &MainEnvelope); 2108 p = strchr(buf, '\n'); 2109 if (p != NULL) 2110 *p = '\0'; 2111 if (Verbose < 2) 2112 (void) sm_io_fprintf(smioout, 2113 SM_TIME_DEFAULT, 2114 "> %s\n", buf); 2115 testmodeline(buf, &MainEnvelope); 2116 } 2117 SM_EXCEPT(exc, "[!F]*") 2118 { 2119 /* 2120 ** 8.10 just prints \n on interrupt. 2121 ** I'm printing the exception here in case 2122 ** sendmail is extended to raise additional 2123 ** exceptions in this context. 2124 */ 2125 2126 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2127 "\n"); 2128 sm_exc_print(exc, smioout); 2129 } 2130 SM_END_TRY 2131 } 2132 } 2133 2134 #if STARTTLS 2135 tls_ok = true; 2136 if (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER || 2137 OpMode == MD_ARPAFTP) 2138 { 2139 /* check whether STARTTLS is turned off for the client */ 2140 if (chkclientmodifiers(D_NOTLS)) 2141 tls_ok = false; 2142 } 2143 else if (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON || 2144 OpMode == MD_SMTP) 2145 { 2146 /* check whether STARTTLS is turned off */ 2147 if (chkdaemonmodifiers(D_NOTLS) && chkclientmodifiers(D_NOTLS)) 2148 tls_ok = false; 2149 } 2150 else /* other modes don't need STARTTLS */ 2151 tls_ok = false; 2152 2153 if (tls_ok) 2154 { 2155 /* basic TLS initialization */ 2156 tls_ok = init_tls_library(); 2157 } 2158 2159 if (!tls_ok && (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER)) 2160 { 2161 /* disable TLS for client */ 2162 setclttls(false); 2163 } 2164 #endif /* STARTTLS */ 2165 2166 /* 2167 ** If collecting stuff from the queue, go start doing that. 2168 */ 2169 2170 if (OpMode == MD_QUEUERUN && QueueIntvl == 0) 2171 { 2172 pid_t pid = -1; 2173 2174 #if STARTTLS 2175 /* init TLS for client, ignore result for now */ 2176 (void) initclttls(tls_ok); 2177 #endif /* STARTTLS */ 2178 2179 /* 2180 ** The parent process of the caller of runqueue() needs 2181 ** to stay around for a possible SIGTERM. The SIGTERM will 2182 ** tell this process that all of the queue runners children 2183 ** need to be sent SIGTERM as well. At the same time, we 2184 ** want to return control to the command line. So we do an 2185 ** extra fork(). 2186 */ 2187 2188 if (Verbose || foregroundqueue || (pid = fork()) <= 0) 2189 { 2190 /* 2191 ** If the fork() failed we should still try to do 2192 ** the queue run. If it succeeded then the child 2193 ** is going to start the run and wait for all 2194 ** of the children to finish. 2195 */ 2196 2197 if (pid == 0) 2198 { 2199 /* Reset global flags */ 2200 RestartRequest = NULL; 2201 ShutdownRequest = NULL; 2202 PendingSignal = 0; 2203 2204 /* disconnect from terminal */ 2205 disconnect(2, CurEnv); 2206 } 2207 2208 CurrentPid = getpid(); 2209 if (qgrp != NOQGRP) 2210 { 2211 int rwgflags = RWG_NONE; 2212 2213 /* 2214 ** To run a specific queue group mark it to 2215 ** be run, select the work group it's in and 2216 ** increment the work counter. 2217 */ 2218 2219 for (i = 0; i < NumQueue && Queue[i] != NULL; 2220 i++) 2221 Queue[i]->qg_nextrun = (time_t) -1; 2222 Queue[qgrp]->qg_nextrun = 0; 2223 if (Verbose) 2224 rwgflags |= RWG_VERBOSE; 2225 if (queuepersistent) 2226 rwgflags |= RWG_PERSISTENT; 2227 rwgflags |= RWG_FORCE; 2228 (void) run_work_group(Queue[qgrp]->qg_wgrp, 2229 rwgflags); 2230 } 2231 else 2232 (void) runqueue(false, Verbose, 2233 queuepersistent, true); 2234 2235 /* set the title to make it easier to find */ 2236 sm_setproctitle(true, CurEnv, "Queue control"); 2237 (void) sm_signal(SIGCHLD, SIG_DFL); 2238 while (CurChildren > 0) 2239 { 2240 int status; 2241 pid_t ret; 2242 2243 errno = 0; 2244 while ((ret = sm_wait(&status)) <= 0) 2245 { 2246 if (errno == ECHILD) 2247 { 2248 /* 2249 ** Oops... something got messed 2250 ** up really bad. Waiting for 2251 ** non-existent children 2252 ** shouldn't happen. Let's get 2253 ** out of here. 2254 */ 2255 2256 CurChildren = 0; 2257 break; 2258 } 2259 continue; 2260 } 2261 2262 /* something is really really wrong */ 2263 if (errno == ECHILD) 2264 { 2265 sm_syslog(LOG_ERR, NOQID, 2266 "queue control process: lost all children: wait returned ECHILD"); 2267 break; 2268 } 2269 2270 /* Only drop when a child gives status */ 2271 if (WIFSTOPPED(status)) 2272 continue; 2273 2274 proc_list_drop(ret, status, NULL); 2275 } 2276 } 2277 finis(true, true, ExitStat); 2278 /* NOTREACHED */ 2279 } 2280 2281 # if SASL 2282 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2283 { 2284 /* check whether AUTH is turned off for the server */ 2285 if (!chkdaemonmodifiers(D_NOAUTH) && 2286 (i = sasl_server_init(srvcallbacks, "Sendmail")) != SASL_OK) 2287 syserr("!sasl_server_init failed! [%s]", 2288 sasl_errstring(i, NULL, NULL)); 2289 } 2290 # endif /* SASL */ 2291 2292 if (OpMode == MD_SMTP) 2293 { 2294 proc_list_add(CurrentPid, "Sendmail SMTP Agent", 2295 PROC_DAEMON, 0, -1, NULL); 2296 2297 /* clean up background delivery children */ 2298 (void) sm_signal(SIGCHLD, reapchild); 2299 } 2300 2301 /* 2302 ** If a daemon, wait for a request. 2303 ** getrequests will always return in a child. 2304 ** If we should also be processing the queue, start 2305 ** doing it in background. 2306 ** We check for any errors that might have happened 2307 ** during startup. 2308 */ 2309 2310 if (OpMode == MD_DAEMON || QueueIntvl > 0) 2311 { 2312 char dtype[200]; 2313 2314 /* avoid cleanup in finis(), DaemonPid will be set below */ 2315 DaemonPid = 0; 2316 if (!run_in_foreground && !tTd(99, 100)) 2317 { 2318 /* put us in background */ 2319 i = fork(); 2320 if (i < 0) 2321 syserr("daemon: cannot fork"); 2322 if (i != 0) 2323 { 2324 finis(false, true, EX_OK); 2325 /* NOTREACHED */ 2326 } 2327 2328 /* 2329 ** Initialize exception stack and default exception 2330 ** handler for child process. 2331 */ 2332 2333 /* Reset global flags */ 2334 RestartRequest = NULL; 2335 RestartWorkGroup = false; 2336 ShutdownRequest = NULL; 2337 PendingSignal = 0; 2338 CurrentPid = getpid(); 2339 2340 sm_exc_newthread(fatal_error); 2341 2342 /* disconnect from our controlling tty */ 2343 disconnect(2, &MainEnvelope); 2344 } 2345 2346 dtype[0] = '\0'; 2347 if (OpMode == MD_DAEMON) 2348 { 2349 (void) sm_strlcat(dtype, "+SMTP", sizeof(dtype)); 2350 DaemonPid = CurrentPid; 2351 } 2352 if (QueueIntvl > 0) 2353 { 2354 (void) sm_strlcat2(dtype, 2355 queuepersistent 2356 ? "+persistent-queueing@" 2357 : "+queueing@", 2358 pintvl(QueueIntvl, true), 2359 sizeof(dtype)); 2360 } 2361 if (tTd(0, 1)) 2362 (void) sm_strlcat(dtype, "+debugging", sizeof(dtype)); 2363 2364 sm_syslog(LOG_INFO, NOQID, 2365 "starting daemon (%s): %s", Version, dtype + 1); 2366 #if XLA 2367 xla_create_file(); 2368 #endif /* XLA */ 2369 2370 /* save daemon type in a macro for possible PidFile use */ 2371 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2372 macid("{daemon_info}"), dtype + 1); 2373 2374 /* save queue interval in a macro for possible PidFile use */ 2375 macdefine(&MainEnvelope.e_macro, A_TEMP, 2376 macid("{queue_interval}"), pintvl(QueueIntvl, true)); 2377 2378 /* workaround: can't seem to release the signal in the parent */ 2379 (void) sm_signal(SIGHUP, sighup); 2380 (void) sm_releasesignal(SIGHUP); 2381 (void) sm_signal(SIGTERM, sigterm); 2382 2383 if (QueueIntvl > 0) 2384 { 2385 #if _FFR_RUNPQG 2386 if (qgrp != NOQGRP) 2387 { 2388 int rwgflags = RWG_NONE; 2389 2390 /* 2391 ** To run a specific queue group mark it to 2392 ** be run, select the work group it's in and 2393 ** increment the work counter. 2394 */ 2395 2396 for (i = 0; i < NumQueue && Queue[i] != NULL; 2397 i++) 2398 Queue[i]->qg_nextrun = (time_t) -1; 2399 Queue[qgrp]->qg_nextrun = 0; 2400 if (Verbose) 2401 rwgflags |= RWG_VERBOSE; 2402 if (queuepersistent) 2403 rwgflags |= RWG_PERSISTENT; 2404 rwgflags |= RWG_FORCE; 2405 (void) run_work_group(Queue[qgrp]->qg_wgrp, 2406 rwgflags); 2407 } 2408 else 2409 #endif /* _FFR_RUNPQG */ 2410 (void) runqueue(true, false, queuepersistent, 2411 true); 2412 2413 /* 2414 ** If queuepersistent but not in daemon mode then 2415 ** we're going to do the queue runner monitoring here. 2416 ** If in daemon mode then the monitoring will happen 2417 ** elsewhere. 2418 */ 2419 2420 if (OpMode != MD_DAEMON && queuepersistent) 2421 { 2422 /* 2423 ** Write the pid to file 2424 ** XXX Overwrites sendmail.pid 2425 */ 2426 2427 log_sendmail_pid(&MainEnvelope); 2428 2429 /* set the title to make it easier to find */ 2430 sm_setproctitle(true, CurEnv, "Queue control"); 2431 (void) sm_signal(SIGCHLD, SIG_DFL); 2432 while (CurChildren > 0) 2433 { 2434 int status; 2435 pid_t ret; 2436 int group; 2437 2438 CHECK_RESTART; 2439 errno = 0; 2440 while ((ret = sm_wait(&status)) <= 0) 2441 { 2442 /* 2443 ** Waiting for non-existent 2444 ** children shouldn't happen. 2445 ** Let's get out of here if 2446 ** it occurs. 2447 */ 2448 2449 if (errno == ECHILD) 2450 { 2451 CurChildren = 0; 2452 break; 2453 } 2454 continue; 2455 } 2456 2457 /* something is really really wrong */ 2458 if (errno == ECHILD) 2459 { 2460 sm_syslog(LOG_ERR, NOQID, 2461 "persistent queue runner control process: lost all children: wait returned ECHILD"); 2462 break; 2463 } 2464 2465 if (WIFSTOPPED(status)) 2466 continue; 2467 2468 /* Probe only on a child status */ 2469 proc_list_drop(ret, status, &group); 2470 2471 if (WIFSIGNALED(status)) 2472 { 2473 if (WCOREDUMP(status)) 2474 { 2475 sm_syslog(LOG_ERR, NOQID, 2476 "persistent queue runner=%d core dumped, signal=%d", 2477 group, WTERMSIG(status)); 2478 2479 /* don't restart this */ 2480 mark_work_group_restart( 2481 group, -1); 2482 continue; 2483 } 2484 2485 sm_syslog(LOG_ERR, NOQID, 2486 "persistent queue runner=%d died, pid=%ld, signal=%d", 2487 group, (long) ret, 2488 WTERMSIG(status)); 2489 } 2490 2491 /* 2492 ** When debugging active, don't 2493 ** restart the persistent queues. 2494 ** But do log this as info. 2495 */ 2496 2497 if (sm_debug_active(&DebugNoPRestart, 2498 1)) 2499 { 2500 sm_syslog(LOG_DEBUG, NOQID, 2501 "persistent queue runner=%d, exited", 2502 group); 2503 mark_work_group_restart(group, 2504 -1); 2505 } 2506 CHECK_RESTART; 2507 } 2508 finis(true, true, ExitStat); 2509 /* NOTREACHED */ 2510 } 2511 2512 if (OpMode != MD_DAEMON) 2513 { 2514 char qtype[200]; 2515 2516 /* 2517 ** Write the pid to file 2518 ** XXX Overwrites sendmail.pid 2519 */ 2520 2521 log_sendmail_pid(&MainEnvelope); 2522 2523 /* set the title to make it easier to find */ 2524 qtype[0] = '\0'; 2525 (void) sm_strlcpyn(qtype, sizeof(qtype), 4, 2526 "Queue runner@", 2527 pintvl(QueueIntvl, true), 2528 " for ", 2529 QueueDir); 2530 sm_setproctitle(true, CurEnv, qtype); 2531 for (;;) 2532 { 2533 (void) pause(); 2534 2535 CHECK_RESTART; 2536 2537 if (doqueuerun()) 2538 (void) runqueue(true, false, 2539 false, false); 2540 } 2541 } 2542 } 2543 (void) dropenvelope(&MainEnvelope, true, false); 2544 2545 #if STARTTLS 2546 /* init TLS for server, ignore result for now */ 2547 (void) initsrvtls(tls_ok); 2548 #endif /* STARTTLS */ 2549 2550 nextreq: 2551 p_flags = getrequests(&MainEnvelope); 2552 2553 /* drop privileges */ 2554 (void) drop_privileges(false); 2555 2556 /* 2557 ** Get authentication data 2558 ** Set _ macro in BlankEnvelope before calling newenvelope(). 2559 */ 2560 2561 authinfo = getauthinfo(sm_io_getinfo(InChannel, SM_IO_WHAT_FD, 2562 NULL), &forged); 2563 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 2564 if (tTd(75, 9)) 2565 sm_syslog(LOG_INFO, NOQID, 2566 "main: where=after_getauthinfo, RealHostAddr=%s", 2567 anynet_ntoa(&RealHostAddr)); 2568 2569 /* at this point we are in a child: reset state */ 2570 sm_rpool_free(MainEnvelope.e_rpool); 2571 (void) newenvelope(&MainEnvelope, &MainEnvelope, 2572 sm_rpool_new_x(NULL)); 2573 } 2574 2575 if (LogLevel > 9) 2576 { 2577 /* log connection information */ 2578 sm_syslog(LOG_INFO, NULL, "connect from %s", authinfo); 2579 } 2580 2581 /* 2582 ** If running SMTP protocol, start collecting and executing 2583 ** commands. This will never return. 2584 */ 2585 2586 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2587 { 2588 char pbuf[20]; 2589 2590 /* 2591 ** Save some macros for check_* rulesets. 2592 */ 2593 2594 if (forged) 2595 { 2596 char ipbuf[103]; 2597 2598 (void) sm_snprintf(ipbuf, sizeof(ipbuf), "[%.100s]", 2599 anynet_ntoa(&RealHostAddr)); 2600 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2601 macid("{client_name}"), ipbuf); 2602 } 2603 else 2604 macdefine(&BlankEnvelope.e_macro, A_PERM, 2605 macid("{client_name}"), RealHostName); 2606 macdefine(&BlankEnvelope.e_macro, A_PERM, 2607 macid("{client_ptr}"), RealHostName); 2608 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2609 macid("{client_addr}"), anynet_ntoa(&RealHostAddr)); 2610 sm_getla(); 2611 2612 switch (RealHostAddr.sa.sa_family) 2613 { 2614 #if NETINET 2615 case AF_INET: 2616 (void) sm_snprintf(pbuf, sizeof(pbuf), "%d", 2617 RealHostAddr.sin.sin_port); 2618 break; 2619 #endif /* NETINET */ 2620 #if NETINET6 2621 case AF_INET6: 2622 (void) sm_snprintf(pbuf, sizeof(pbuf), "%d", 2623 RealHostAddr.sin6.sin6_port); 2624 break; 2625 #endif /* NETINET6 */ 2626 default: 2627 (void) sm_snprintf(pbuf, sizeof(pbuf), "0"); 2628 break; 2629 } 2630 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2631 macid("{client_port}"), pbuf); 2632 2633 if (OpMode == MD_DAEMON) 2634 { 2635 ENVELOPE *saved_env; 2636 2637 /* validate the connection */ 2638 HoldErrs = true; 2639 saved_env = CurEnv; 2640 CurEnv = &BlankEnvelope; 2641 nullserver = validate_connection(&RealHostAddr, 2642 macvalue(macid("{client_name}"), 2643 &BlankEnvelope), 2644 &BlankEnvelope); 2645 if (bitset(EF_DISCARD, BlankEnvelope.e_flags)) 2646 MainEnvelope.e_flags |= EF_DISCARD; 2647 CurEnv = saved_env; 2648 HoldErrs = false; 2649 } 2650 else if (p_flags == NULL) 2651 { 2652 p_flags = (BITMAP256 *) xalloc(sizeof(*p_flags)); 2653 clrbitmap(p_flags); 2654 } 2655 #if STARTTLS 2656 if (OpMode == MD_SMTP) 2657 (void) initsrvtls(tls_ok); 2658 #endif /* STARTTLS */ 2659 2660 /* turn off profiling */ 2661 SM_PROF(1); 2662 smtp(nullserver, *p_flags, &MainEnvelope); 2663 2664 if (tTd(93, 100)) 2665 { 2666 /* turn off profiling */ 2667 SM_PROF(0); 2668 if (OpMode == MD_DAEMON) 2669 goto nextreq; 2670 } 2671 } 2672 2673 sm_rpool_free(MainEnvelope.e_rpool); 2674 clearenvelope(&MainEnvelope, false, sm_rpool_new_x(NULL)); 2675 if (OpMode == MD_VERIFY) 2676 { 2677 set_delivery_mode(SM_VERIFY, &MainEnvelope); 2678 PostMasterCopy = NULL; 2679 } 2680 else 2681 { 2682 /* interactive -- all errors are global */ 2683 MainEnvelope.e_flags |= EF_GLOBALERRS|EF_LOGSENDER; 2684 } 2685 2686 /* 2687 ** Do basic system initialization and set the sender 2688 */ 2689 2690 initsys(&MainEnvelope); 2691 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{ntries}"), "0"); 2692 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{nrcpts}"), "0"); 2693 setsender(from, &MainEnvelope, NULL, '\0', false); 2694 if (warn_f_flag != '\0' && !wordinclass(RealUserName, 't') && 2695 (!bitnset(M_LOCALMAILER, MainEnvelope.e_from.q_mailer->m_flags) || 2696 strcmp(MainEnvelope.e_from.q_user, RealUserName) != 0)) 2697 { 2698 auth_warning(&MainEnvelope, "%s set sender to %s using -%c", 2699 RealUserName, from, warn_f_flag); 2700 #if SASL 2701 auth = false; 2702 #endif /* SASL */ 2703 } 2704 if (auth) 2705 { 2706 char *fv; 2707 2708 /* set the initial sender for AUTH= to $f@$j */ 2709 fv = macvalue('f', &MainEnvelope); 2710 if (fv == NULL || *fv == '\0') 2711 MainEnvelope.e_auth_param = NULL; 2712 else 2713 { 2714 if (strchr(fv, '@') == NULL) 2715 { 2716 i = strlen(fv) + strlen(macvalue('j', 2717 &MainEnvelope)) + 2; 2718 p = sm_malloc_x(i); 2719 (void) sm_strlcpyn(p, i, 3, fv, "@", 2720 macvalue('j', 2721 &MainEnvelope)); 2722 } 2723 else 2724 p = sm_strdup_x(fv); 2725 MainEnvelope.e_auth_param = sm_rpool_strdup_x(MainEnvelope.e_rpool, 2726 xtextify(p, "=")); 2727 sm_free(p); /* XXX */ 2728 } 2729 } 2730 if (macvalue('s', &MainEnvelope) == NULL) 2731 macdefine(&MainEnvelope.e_macro, A_PERM, 's', RealHostName); 2732 2733 av = argv + optind; 2734 if (*av == NULL && !GrabTo) 2735 { 2736 MainEnvelope.e_to = NULL; 2737 MainEnvelope.e_flags |= EF_GLOBALERRS; 2738 HoldErrs = false; 2739 SuperSafe = SAFE_NO; 2740 usrerr("Recipient names must be specified"); 2741 2742 /* collect body for UUCP return */ 2743 if (OpMode != MD_VERIFY) 2744 collect(InChannel, false, NULL, &MainEnvelope, true); 2745 finis(true, true, EX_USAGE); 2746 /* NOTREACHED */ 2747 } 2748 2749 /* 2750 ** Scan argv and deliver the message to everyone. 2751 */ 2752 2753 save_val = LogUsrErrs; 2754 LogUsrErrs = true; 2755 sendtoargv(av, &MainEnvelope); 2756 LogUsrErrs = save_val; 2757 2758 /* if we have had errors sofar, arrange a meaningful exit stat */ 2759 if (Errors > 0 && ExitStat == EX_OK) 2760 ExitStat = EX_USAGE; 2761 2762 #if _FFR_FIX_DASHT 2763 /* 2764 ** If using -t, force not sending to argv recipients, even 2765 ** if they are mentioned in the headers. 2766 */ 2767 2768 if (GrabTo) 2769 { 2770 ADDRESS *q; 2771 2772 for (q = MainEnvelope.e_sendqueue; q != NULL; q = q->q_next) 2773 q->q_state = QS_REMOVED; 2774 } 2775 #endif /* _FFR_FIX_DASHT */ 2776 2777 /* 2778 ** Read the input mail. 2779 */ 2780 2781 MainEnvelope.e_to = NULL; 2782 if (OpMode != MD_VERIFY || GrabTo) 2783 { 2784 int savederrors; 2785 unsigned long savedflags; 2786 2787 /* 2788 ** workaround for compiler warning on Irix: 2789 ** do not initialize variable in the definition, but 2790 ** later on: 2791 ** warning(1548): transfer of control bypasses 2792 ** initialization of: 2793 ** variable "savederrors" (declared at line 2570) 2794 ** variable "savedflags" (declared at line 2571) 2795 ** goto giveup; 2796 */ 2797 2798 savederrors = Errors; 2799 savedflags = MainEnvelope.e_flags & EF_FATALERRS; 2800 MainEnvelope.e_flags |= EF_GLOBALERRS; 2801 MainEnvelope.e_flags &= ~EF_FATALERRS; 2802 Errors = 0; 2803 buffer_errors(); 2804 collect(InChannel, false, NULL, &MainEnvelope, true); 2805 2806 /* header checks failed */ 2807 if (Errors > 0) 2808 { 2809 giveup: 2810 if (!GrabTo) 2811 { 2812 /* Log who the mail would have gone to */ 2813 logundelrcpts(&MainEnvelope, 2814 MainEnvelope.e_message, 2815 8, false); 2816 } 2817 flush_errors(true); 2818 finis(true, true, ExitStat); 2819 /* NOTREACHED */ 2820 return -1; 2821 } 2822 2823 /* bail out if message too large */ 2824 if (bitset(EF_CLRQUEUE, MainEnvelope.e_flags)) 2825 { 2826 finis(true, true, ExitStat != EX_OK ? ExitStat 2827 : EX_DATAERR); 2828 /* NOTREACHED */ 2829 return -1; 2830 } 2831 2832 /* set message size */ 2833 (void) sm_snprintf(buf, sizeof(buf), "%ld", 2834 PRT_NONNEGL(MainEnvelope.e_msgsize)); 2835 macdefine(&MainEnvelope.e_macro, A_TEMP, 2836 macid("{msg_size}"), buf); 2837 2838 Errors = savederrors; 2839 MainEnvelope.e_flags |= savedflags; 2840 } 2841 errno = 0; 2842 2843 if (tTd(1, 1)) 2844 sm_dprintf("From person = \"%s\"\n", 2845 MainEnvelope.e_from.q_paddr); 2846 2847 /* Check if quarantining stats should be updated */ 2848 if (MainEnvelope.e_quarmsg != NULL) 2849 markstats(&MainEnvelope, NULL, STATS_QUARANTINE); 2850 2851 /* 2852 ** Actually send everything. 2853 ** If verifying, just ack. 2854 */ 2855 2856 if (Errors == 0) 2857 { 2858 if (!split_by_recipient(&MainEnvelope) && 2859 bitset(EF_FATALERRS, MainEnvelope.e_flags)) 2860 goto giveup; 2861 } 2862 2863 /* make sure we deliver at least the first envelope */ 2864 i = FastSplit > 0 ? 0 : -1; 2865 for (e = &MainEnvelope; e != NULL; e = e->e_sibling, i++) 2866 { 2867 ENVELOPE *next; 2868 2869 e->e_from.q_state = QS_SENDER; 2870 if (tTd(1, 5)) 2871 { 2872 sm_dprintf("main[%d]: QS_SENDER ", i); 2873 printaddr(sm_debug_file(), &e->e_from, false); 2874 } 2875 e->e_to = NULL; 2876 sm_getla(); 2877 GrabTo = false; 2878 #if NAMED_BIND 2879 _res.retry = TimeOuts.res_retry[RES_TO_FIRST]; 2880 _res.retrans = TimeOuts.res_retrans[RES_TO_FIRST]; 2881 #endif /* NAMED_BIND */ 2882 next = e->e_sibling; 2883 e->e_sibling = NULL; 2884 2885 /* after FastSplit envelopes: queue up */ 2886 sendall(e, i >= FastSplit ? SM_QUEUE : SM_DEFAULT); 2887 e->e_sibling = next; 2888 } 2889 2890 /* 2891 ** All done. 2892 ** Don't send return error message if in VERIFY mode. 2893 */ 2894 2895 finis(true, true, ExitStat); 2896 /* NOTREACHED */ 2897 return ExitStat; 2898 } 2899 /* 2900 ** STOP_SENDMAIL -- Stop the running program 2901 ** 2902 ** Parameters: 2903 ** none. 2904 ** 2905 ** Returns: 2906 ** none. 2907 ** 2908 ** Side Effects: 2909 ** exits. 2910 */ 2911 2912 void 2913 stop_sendmail() 2914 { 2915 /* reset uid for process accounting */ 2916 endpwent(); 2917 (void) setuid(RealUid); 2918 exit(EX_OK); 2919 } 2920 /* 2921 ** FINIS -- Clean up and exit. 2922 ** 2923 ** Parameters: 2924 ** drop -- whether or not to drop CurEnv envelope 2925 ** cleanup -- call exit() or _exit()? 2926 ** exitstat -- exit status to use for exit() call 2927 ** 2928 ** Returns: 2929 ** never 2930 ** 2931 ** Side Effects: 2932 ** exits sendmail 2933 */ 2934 2935 void 2936 finis(drop, cleanup, exitstat) 2937 bool drop; 2938 bool cleanup; 2939 volatile int exitstat; 2940 { 2941 char pidpath[MAXPATHLEN]; 2942 pid_t pid; 2943 2944 /* Still want to process new timeouts added below */ 2945 sm_clear_events(); 2946 (void) sm_releasesignal(SIGALRM); 2947 2948 if (tTd(2, 1)) 2949 { 2950 sm_dprintf("\n====finis: stat %d e_id=%s e_flags=", 2951 exitstat, 2952 CurEnv->e_id == NULL ? "NOQUEUE" : CurEnv->e_id); 2953 printenvflags(CurEnv); 2954 } 2955 if (tTd(2, 9)) 2956 printopenfds(false); 2957 2958 SM_TRY 2959 /* 2960 ** Clean up. This might raise E:mta.quickabort 2961 */ 2962 2963 /* clean up temp files */ 2964 CurEnv->e_to = NULL; 2965 if (drop) 2966 { 2967 if (CurEnv->e_id != NULL) 2968 { 2969 int r; 2970 2971 r = dropenvelope(CurEnv, true, false); 2972 if (exitstat == EX_OK) 2973 exitstat = r; 2974 sm_rpool_free(CurEnv->e_rpool); 2975 CurEnv->e_rpool = NULL; 2976 2977 /* these may have pointed to the rpool */ 2978 CurEnv->e_to = NULL; 2979 CurEnv->e_message = NULL; 2980 CurEnv->e_statmsg = NULL; 2981 CurEnv->e_quarmsg = NULL; 2982 CurEnv->e_bodytype = NULL; 2983 CurEnv->e_id = NULL; 2984 CurEnv->e_envid = NULL; 2985 CurEnv->e_auth_param = NULL; 2986 } 2987 else 2988 poststats(StatFile); 2989 } 2990 2991 /* flush any cached connections */ 2992 mci_flush(true, NULL); 2993 2994 /* close maps belonging to this pid */ 2995 closemaps(false); 2996 2997 #if USERDB 2998 /* close UserDatabase */ 2999 _udbx_close(); 3000 #endif /* USERDB */ 3001 3002 #if SASL 3003 stop_sasl_client(); 3004 #endif /* SASL */ 3005 3006 #if XLA 3007 /* clean up extended load average stuff */ 3008 xla_all_end(); 3009 #endif /* XLA */ 3010 3011 SM_FINALLY 3012 /* 3013 ** And exit. 3014 */ 3015 3016 if (LogLevel > 78) 3017 sm_syslog(LOG_DEBUG, CurEnv->e_id, "finis, pid=%d", 3018 (int) CurrentPid); 3019 if (exitstat == EX_TEMPFAIL || 3020 CurEnv->e_errormode == EM_BERKNET) 3021 exitstat = EX_OK; 3022 3023 /* XXX clean up queues and related data structures */ 3024 cleanup_queues(); 3025 pid = getpid(); 3026 #if SM_CONF_SHM 3027 cleanup_shm(DaemonPid == pid); 3028 #endif /* SM_CONF_SHM */ 3029 3030 /* close locked pid file */ 3031 close_sendmail_pid(); 3032 3033 if (DaemonPid == pid || PidFilePid == pid) 3034 { 3035 /* blow away the pid file */ 3036 expand(PidFile, pidpath, sizeof(pidpath), CurEnv); 3037 (void) unlink(pidpath); 3038 } 3039 3040 /* reset uid for process accounting */ 3041 endpwent(); 3042 sm_mbdb_terminate(); 3043 #if _FFR_MEMSTAT 3044 (void) sm_memstat_close(); 3045 #endif /* _FFR_MEMSTAT */ 3046 (void) setuid(RealUid); 3047 #if SM_HEAP_CHECK 3048 /* dump the heap, if we are checking for memory leaks */ 3049 if (sm_debug_active(&SmHeapCheck, 2)) 3050 sm_heap_report(smioout, 3051 sm_debug_level(&SmHeapCheck) - 1); 3052 #endif /* SM_HEAP_CHECK */ 3053 if (sm_debug_active(&SmXtrapReport, 1)) 3054 sm_dprintf("xtrap count = %d\n", SmXtrapCount); 3055 if (cleanup) 3056 exit(exitstat); 3057 else 3058 _exit(exitstat); 3059 SM_END_TRY 3060 } 3061 /* 3062 ** INTINDEBUG -- signal handler for SIGINT in -bt mode 3063 ** 3064 ** Parameters: 3065 ** sig -- incoming signal. 3066 ** 3067 ** Returns: 3068 ** none. 3069 ** 3070 ** Side Effects: 3071 ** longjmps back to test mode loop. 3072 ** 3073 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3074 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3075 ** DOING. 3076 */ 3077 3078 /* Type of an exception generated on SIGINT during address test mode. */ 3079 static const SM_EXC_TYPE_T EtypeInterrupt = 3080 { 3081 SmExcTypeMagic, 3082 "S:mta.interrupt", 3083 "", 3084 sm_etype_printf, 3085 "interrupt", 3086 }; 3087 3088 /* ARGSUSED */ 3089 static SIGFUNC_DECL 3090 intindebug(sig) 3091 int sig; 3092 { 3093 int save_errno = errno; 3094 3095 FIX_SYSV_SIGNAL(sig, intindebug); 3096 errno = save_errno; 3097 CHECK_CRITICAL(sig); 3098 errno = save_errno; 3099 sm_exc_raisenew_x(&EtypeInterrupt); 3100 errno = save_errno; 3101 return SIGFUNC_RETURN; 3102 } 3103 /* 3104 ** SIGTERM -- SIGTERM handler for the daemon 3105 ** 3106 ** Parameters: 3107 ** sig -- signal number. 3108 ** 3109 ** Returns: 3110 ** none. 3111 ** 3112 ** Side Effects: 3113 ** Sets ShutdownRequest which will hopefully trigger 3114 ** the daemon to exit. 3115 ** 3116 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3117 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3118 ** DOING. 3119 */ 3120 3121 /* ARGSUSED */ 3122 static SIGFUNC_DECL 3123 sigterm(sig) 3124 int sig; 3125 { 3126 int save_errno = errno; 3127 3128 FIX_SYSV_SIGNAL(sig, sigterm); 3129 ShutdownRequest = "signal"; 3130 errno = save_errno; 3131 return SIGFUNC_RETURN; 3132 } 3133 /* 3134 ** SIGHUP -- handle a SIGHUP signal 3135 ** 3136 ** Parameters: 3137 ** sig -- incoming signal. 3138 ** 3139 ** Returns: 3140 ** none. 3141 ** 3142 ** Side Effects: 3143 ** Sets RestartRequest which should cause the daemon 3144 ** to restart. 3145 ** 3146 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3147 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3148 ** DOING. 3149 */ 3150 3151 /* ARGSUSED */ 3152 static SIGFUNC_DECL 3153 sighup(sig) 3154 int sig; 3155 { 3156 int save_errno = errno; 3157 3158 FIX_SYSV_SIGNAL(sig, sighup); 3159 RestartRequest = "signal"; 3160 errno = save_errno; 3161 return SIGFUNC_RETURN; 3162 } 3163 /* 3164 ** SIGPIPE -- signal handler for SIGPIPE 3165 ** 3166 ** Parameters: 3167 ** sig -- incoming signal. 3168 ** 3169 ** Returns: 3170 ** none. 3171 ** 3172 ** Side Effects: 3173 ** Sets StopRequest which should cause the mailq/hoststatus 3174 ** display to stop. 3175 ** 3176 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3177 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3178 ** DOING. 3179 */ 3180 3181 /* ARGSUSED */ 3182 static SIGFUNC_DECL 3183 sigpipe(sig) 3184 int sig; 3185 { 3186 int save_errno = errno; 3187 3188 FIX_SYSV_SIGNAL(sig, sigpipe); 3189 StopRequest = true; 3190 errno = save_errno; 3191 return SIGFUNC_RETURN; 3192 } 3193 /* 3194 ** INTSIG -- clean up on interrupt 3195 ** 3196 ** This just arranges to exit. It pessimizes in that it 3197 ** may resend a message. 3198 ** 3199 ** Parameters: 3200 ** sig -- incoming signal. 3201 ** 3202 ** Returns: 3203 ** none. 3204 ** 3205 ** Side Effects: 3206 ** Unlocks the current job. 3207 ** 3208 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3209 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3210 ** DOING. 3211 */ 3212 3213 /* ARGSUSED */ 3214 SIGFUNC_DECL 3215 intsig(sig) 3216 int sig; 3217 { 3218 bool drop = false; 3219 int save_errno = errno; 3220 3221 FIX_SYSV_SIGNAL(sig, intsig); 3222 errno = save_errno; 3223 CHECK_CRITICAL(sig); 3224 sm_allsignals(true); 3225 IntSig = true; 3226 3227 FileName = NULL; 3228 3229 /* Clean-up on aborted stdin message submission */ 3230 if (OpMode == MD_SMTP || 3231 OpMode == MD_DELIVER || 3232 OpMode == MD_ARPAFTP) 3233 { 3234 if (CurEnv->e_id != NULL) 3235 { 3236 char *fn; 3237 3238 fn = queuename(CurEnv, DATAFL_LETTER); 3239 if (fn != NULL) 3240 (void) unlink(fn); 3241 fn = queuename(CurEnv, ANYQFL_LETTER); 3242 if (fn != NULL) 3243 (void) unlink(fn); 3244 } 3245 _exit(EX_OK); 3246 /* NOTREACHED */ 3247 } 3248 3249 if (sig != 0 && LogLevel > 79) 3250 sm_syslog(LOG_DEBUG, CurEnv->e_id, "interrupt"); 3251 if (OpMode != MD_TEST) 3252 unlockqueue(CurEnv); 3253 3254 finis(drop, false, EX_OK); 3255 /* NOTREACHED */ 3256 } 3257 /* 3258 ** DISCONNECT -- remove our connection with any foreground process 3259 ** 3260 ** Parameters: 3261 ** droplev -- how "deeply" we should drop the line. 3262 ** 0 -- ignore signals, mail back errors, make sure 3263 ** output goes to stdout. 3264 ** 1 -- also, make stdout go to /dev/null. 3265 ** 2 -- also, disconnect from controlling terminal 3266 ** (only for daemon mode). 3267 ** e -- the current envelope. 3268 ** 3269 ** Returns: 3270 ** none 3271 ** 3272 ** Side Effects: 3273 ** Trys to insure that we are immune to vagaries of 3274 ** the controlling tty. 3275 */ 3276 3277 void 3278 disconnect(droplev, e) 3279 int droplev; 3280 register ENVELOPE *e; 3281 { 3282 int fd; 3283 3284 if (tTd(52, 1)) 3285 sm_dprintf("disconnect: In %d Out %d, e=%p\n", 3286 sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL), 3287 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL), e); 3288 if (tTd(52, 100)) 3289 { 3290 sm_dprintf("don't\n"); 3291 return; 3292 } 3293 if (LogLevel > 93) 3294 sm_syslog(LOG_DEBUG, e->e_id, 3295 "disconnect level %d", 3296 droplev); 3297 3298 /* be sure we don't get nasty signals */ 3299 (void) sm_signal(SIGINT, SIG_IGN); 3300 (void) sm_signal(SIGQUIT, SIG_IGN); 3301 3302 /* we can't communicate with our caller, so.... */ 3303 HoldErrs = true; 3304 CurEnv->e_errormode = EM_MAIL; 3305 Verbose = 0; 3306 DisConnected = true; 3307 3308 /* all input from /dev/null */ 3309 if (InChannel != smioin) 3310 { 3311 (void) sm_io_close(InChannel, SM_TIME_DEFAULT); 3312 InChannel = smioin; 3313 } 3314 if (sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3315 SM_IO_RDONLY, NULL, smioin) == NULL) 3316 sm_syslog(LOG_ERR, e->e_id, 3317 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3318 SM_PATH_DEVNULL, sm_errstring(errno)); 3319 3320 /* 3321 ** output to the transcript 3322 ** We also compare the fd numbers here since OutChannel 3323 ** might be a layer on top of smioout due to encryption 3324 ** (see sfsasl.c). 3325 */ 3326 3327 if (OutChannel != smioout && 3328 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL) != 3329 sm_io_getinfo(smioout, SM_IO_WHAT_FD, NULL)) 3330 { 3331 (void) sm_io_close(OutChannel, SM_TIME_DEFAULT); 3332 OutChannel = smioout; 3333 3334 #if 0 3335 /* 3336 ** Has smioout been closed? Reopen it. 3337 ** This shouldn't happen anymore, the code is here 3338 ** just as a reminder. 3339 */ 3340 3341 if (smioout->sm_magic == NULL && 3342 sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3343 SM_IO_WRONLY, NULL, smioout) == NULL) 3344 sm_syslog(LOG_ERR, e->e_id, 3345 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3346 SM_PATH_DEVNULL, sm_errstring(errno)); 3347 #endif /* 0 */ 3348 } 3349 if (droplev > 0) 3350 { 3351 fd = open(SM_PATH_DEVNULL, O_WRONLY, 0666); 3352 if (fd == -1) 3353 { 3354 sm_syslog(LOG_ERR, e->e_id, 3355 "disconnect: open(\"%s\") failed: %s", 3356 SM_PATH_DEVNULL, sm_errstring(errno)); 3357 } 3358 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 3359 if (fd >= 0) 3360 { 3361 (void) dup2(fd, STDOUT_FILENO); 3362 (void) dup2(fd, STDERR_FILENO); 3363 (void) close(fd); 3364 } 3365 } 3366 3367 /* drop our controlling TTY completely if possible */ 3368 if (droplev > 1) 3369 { 3370 (void) setsid(); 3371 errno = 0; 3372 } 3373 3374 #if XDEBUG 3375 checkfd012("disconnect"); 3376 #endif /* XDEBUG */ 3377 3378 if (LogLevel > 71) 3379 sm_syslog(LOG_DEBUG, e->e_id, "in background, pid=%d", 3380 (int) CurrentPid); 3381 3382 errno = 0; 3383 } 3384 3385 static void 3386 obsolete(argv) 3387 char *argv[]; 3388 { 3389 register char *ap; 3390 register char *op; 3391 3392 while ((ap = *++argv) != NULL) 3393 { 3394 /* Return if "--" or not an option of any form. */ 3395 if (ap[0] != '-' || ap[1] == '-') 3396 return; 3397 3398 /* Don't allow users to use "-Q." or "-Q ." */ 3399 if ((ap[1] == 'Q' && ap[2] == '.') || 3400 (ap[1] == 'Q' && argv[1] != NULL && 3401 argv[1][0] == '.' && argv[1][1] == '\0')) 3402 { 3403 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3404 "Can not use -Q.\n"); 3405 exit(EX_USAGE); 3406 } 3407 3408 /* skip over options that do have a value */ 3409 op = strchr(OPTIONS, ap[1]); 3410 if (op != NULL && *++op == ':' && ap[2] == '\0' && 3411 ap[1] != 'd' && 3412 #if defined(sony_news) 3413 ap[1] != 'E' && ap[1] != 'J' && 3414 #endif /* defined(sony_news) */ 3415 argv[1] != NULL && argv[1][0] != '-') 3416 { 3417 argv++; 3418 continue; 3419 } 3420 3421 /* If -C doesn't have an argument, use sendmail.cf. */ 3422 #define __DEFPATH "sendmail.cf" 3423 if (ap[1] == 'C' && ap[2] == '\0') 3424 { 3425 *argv = xalloc(sizeof(__DEFPATH) + 2); 3426 (void) sm_strlcpyn(argv[0], sizeof(__DEFPATH) + 2, 2, 3427 "-C", __DEFPATH); 3428 } 3429 3430 /* If -q doesn't have an argument, run it once. */ 3431 if (ap[1] == 'q' && ap[2] == '\0') 3432 *argv = "-q0"; 3433 3434 /* If -Q doesn't have an argument, disable quarantining */ 3435 if (ap[1] == 'Q' && ap[2] == '\0') 3436 *argv = "-Q."; 3437 3438 /* if -d doesn't have an argument, use 0-99.1 */ 3439 if (ap[1] == 'd' && ap[2] == '\0') 3440 *argv = "-d0-99.1"; 3441 3442 #if defined(sony_news) 3443 /* if -E doesn't have an argument, use -EC */ 3444 if (ap[1] == 'E' && ap[2] == '\0') 3445 *argv = "-EC"; 3446 3447 /* if -J doesn't have an argument, use -JJ */ 3448 if (ap[1] == 'J' && ap[2] == '\0') 3449 *argv = "-JJ"; 3450 #endif /* defined(sony_news) */ 3451 } 3452 } 3453 /* 3454 ** AUTH_WARNING -- specify authorization warning 3455 ** 3456 ** Parameters: 3457 ** e -- the current envelope. 3458 ** msg -- the text of the message. 3459 ** args -- arguments to the message. 3460 ** 3461 ** Returns: 3462 ** none. 3463 */ 3464 3465 void 3466 #ifdef __STDC__ 3467 auth_warning(register ENVELOPE *e, const char *msg, ...) 3468 #else /* __STDC__ */ 3469 auth_warning(e, msg, va_alist) 3470 register ENVELOPE *e; 3471 const char *msg; 3472 va_dcl 3473 #endif /* __STDC__ */ 3474 { 3475 char buf[MAXLINE]; 3476 SM_VA_LOCAL_DECL 3477 3478 if (bitset(PRIV_AUTHWARNINGS, PrivacyFlags)) 3479 { 3480 register char *p; 3481 static char hostbuf[48]; 3482 3483 if (hostbuf[0] == '\0') 3484 { 3485 struct hostent *hp; 3486 3487 hp = myhostname(hostbuf, sizeof(hostbuf)); 3488 #if NETINET6 3489 if (hp != NULL) 3490 { 3491 freehostent(hp); 3492 hp = NULL; 3493 } 3494 #endif /* NETINET6 */ 3495 } 3496 3497 (void) sm_strlcpyn(buf, sizeof(buf), 2, hostbuf, ": "); 3498 p = &buf[strlen(buf)]; 3499 SM_VA_START(ap, msg); 3500 (void) sm_vsnprintf(p, SPACELEFT(buf, p), msg, ap); 3501 SM_VA_END(ap); 3502 addheader("X-Authentication-Warning", buf, 0, e, true); 3503 if (LogLevel > 3) 3504 sm_syslog(LOG_INFO, e->e_id, 3505 "Authentication-Warning: %.400s", 3506 buf); 3507 } 3508 } 3509 /* 3510 ** GETEXTENV -- get from external environment 3511 ** 3512 ** Parameters: 3513 ** envar -- the name of the variable to retrieve 3514 ** 3515 ** Returns: 3516 ** The value, if any. 3517 */ 3518 3519 static char * 3520 getextenv(envar) 3521 const char *envar; 3522 { 3523 char **envp; 3524 int l; 3525 3526 l = strlen(envar); 3527 for (envp = ExternalEnviron; envp != NULL && *envp != NULL; envp++) 3528 { 3529 if (strncmp(*envp, envar, l) == 0 && (*envp)[l] == '=') 3530 return &(*envp)[l + 1]; 3531 } 3532 return NULL; 3533 } 3534 /* 3535 ** SM_SETUSERENV -- set an environment variable in the propagated environment 3536 ** 3537 ** Parameters: 3538 ** envar -- the name of the environment variable. 3539 ** value -- the value to which it should be set. If 3540 ** null, this is extracted from the incoming 3541 ** environment. If that is not set, the call 3542 ** to sm_setuserenv is ignored. 3543 ** 3544 ** Returns: 3545 ** none. 3546 */ 3547 3548 void 3549 sm_setuserenv(envar, value) 3550 const char *envar; 3551 const char *value; 3552 { 3553 int i, l; 3554 char **evp = UserEnviron; 3555 char *p; 3556 3557 if (value == NULL) 3558 { 3559 value = getextenv(envar); 3560 if (value == NULL) 3561 return; 3562 } 3563 3564 /* XXX enforce reasonable size? */ 3565 i = strlen(envar) + 1; 3566 l = strlen(value) + i + 1; 3567 p = (char *) xalloc(l); 3568 (void) sm_strlcpyn(p, l, 3, envar, "=", value); 3569 3570 while (*evp != NULL && strncmp(*evp, p, i) != 0) 3571 evp++; 3572 if (*evp != NULL) 3573 { 3574 *evp++ = p; 3575 } 3576 else if (evp < &UserEnviron[MAXUSERENVIRON]) 3577 { 3578 *evp++ = p; 3579 *evp = NULL; 3580 } 3581 3582 /* make sure it is in our environment as well */ 3583 if (putenv(p) < 0) 3584 syserr("sm_setuserenv: putenv(%s) failed", p); 3585 } 3586 /* 3587 ** DUMPSTATE -- dump state 3588 ** 3589 ** For debugging. 3590 */ 3591 3592 void 3593 dumpstate(when) 3594 char *when; 3595 { 3596 register char *j = macvalue('j', CurEnv); 3597 int rs; 3598 extern int NextMacroId; 3599 3600 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3601 "--- dumping state on %s: $j = %s ---", 3602 when, 3603 j == NULL ? "<NULL>" : j); 3604 if (j != NULL) 3605 { 3606 if (!wordinclass(j, 'w')) 3607 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3608 "*** $j not in $=w ***"); 3609 } 3610 sm_syslog(LOG_DEBUG, CurEnv->e_id, "CurChildren = %d", CurChildren); 3611 sm_syslog(LOG_DEBUG, CurEnv->e_id, "NextMacroId = %d (Max %d)", 3612 NextMacroId, MAXMACROID); 3613 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- open file descriptors: ---"); 3614 printopenfds(true); 3615 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- connection cache: ---"); 3616 mci_dump_all(smioout, true); 3617 rs = strtorwset("debug_dumpstate", NULL, ST_FIND); 3618 if (rs > 0) 3619 { 3620 int status; 3621 register char **pvp; 3622 char *pv[MAXATOM + 1]; 3623 3624 pv[0] = NULL; 3625 status = REWRITE(pv, rs, CurEnv); 3626 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3627 "--- ruleset debug_dumpstate returns stat %d, pv: ---", 3628 status); 3629 for (pvp = pv; *pvp != NULL; pvp++) 3630 sm_syslog(LOG_DEBUG, CurEnv->e_id, "%s", *pvp); 3631 } 3632 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- end of state dump ---"); 3633 } 3634 3635 #ifdef SIGUSR1 3636 /* 3637 ** SIGUSR1 -- Signal a request to dump state. 3638 ** 3639 ** Parameters: 3640 ** sig -- calling signal. 3641 ** 3642 ** Returns: 3643 ** none. 3644 ** 3645 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3646 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3647 ** DOING. 3648 ** 3649 ** XXX: More work is needed for this signal handler. 3650 */ 3651 3652 /* ARGSUSED */ 3653 static SIGFUNC_DECL 3654 sigusr1(sig) 3655 int sig; 3656 { 3657 int save_errno = errno; 3658 3659 FIX_SYSV_SIGNAL(sig, sigusr1); 3660 errno = save_errno; 3661 CHECK_CRITICAL(sig); 3662 dumpstate("user signal"); 3663 # if SM_HEAP_CHECK 3664 dumpstab(); 3665 # endif /* SM_HEAP_CHECK */ 3666 errno = save_errno; 3667 return SIGFUNC_RETURN; 3668 } 3669 #endif /* SIGUSR1 */ 3670 3671 /* 3672 ** DROP_PRIVILEGES -- reduce privileges to those of the RunAsUser option 3673 ** 3674 ** Parameters: 3675 ** to_real_uid -- if set, drop to the real uid instead 3676 ** of the RunAsUser. 3677 ** 3678 ** Returns: 3679 ** EX_OSERR if the setuid failed. 3680 ** EX_OK otherwise. 3681 */ 3682 3683 int 3684 drop_privileges(to_real_uid) 3685 bool to_real_uid; 3686 { 3687 int rval = EX_OK; 3688 GIDSET_T emptygidset[1]; 3689 3690 if (tTd(47, 1)) 3691 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", 3692 (int) to_real_uid, 3693 (int) RealUid, (int) RealGid, 3694 (int) getuid(), (int) getgid(), 3695 (int) geteuid(), (int) getegid(), 3696 (int) RunAsUid, (int) RunAsGid); 3697 3698 if (to_real_uid) 3699 { 3700 RunAsUserName = RealUserName; 3701 RunAsUid = RealUid; 3702 RunAsGid = RealGid; 3703 EffGid = RunAsGid; 3704 } 3705 3706 /* make sure no one can grab open descriptors for secret files */ 3707 endpwent(); 3708 sm_mbdb_terminate(); 3709 3710 /* reset group permissions; these can be set later */ 3711 emptygidset[0] = (to_real_uid || RunAsGid != 0) ? RunAsGid : getegid(); 3712 3713 /* 3714 ** Notice: on some OS (Linux...) the setgroups() call causes 3715 ** a logfile entry if sendmail is not run by root. 3716 ** However, it is unclear (no POSIX standard) whether 3717 ** setgroups() can only succeed if executed by root. 3718 ** So for now we keep it as it is; if you want to change it, use 3719 ** if (geteuid() == 0 && setgroups(1, emptygidset) == -1) 3720 */ 3721 3722 if (setgroups(1, emptygidset) == -1 && geteuid() == 0) 3723 { 3724 syserr("drop_privileges: setgroups(1, %d) failed", 3725 (int) emptygidset[0]); 3726 rval = EX_OSERR; 3727 } 3728 3729 /* reset primary group id */ 3730 if (to_real_uid) 3731 { 3732 /* 3733 ** Drop gid to real gid. 3734 ** On some OS we must reset the effective[/real[/saved]] gid, 3735 ** and then use setgid() to finally drop all group privileges. 3736 ** Later on we check whether we can get back the 3737 ** effective gid. 3738 */ 3739 3740 #if HASSETEGID 3741 if (setegid(RunAsGid) < 0) 3742 { 3743 syserr("drop_privileges: setegid(%d) failed", 3744 (int) RunAsGid); 3745 rval = EX_OSERR; 3746 } 3747 #else /* HASSETEGID */ 3748 # if HASSETREGID 3749 if (setregid(RunAsGid, RunAsGid) < 0) 3750 { 3751 syserr("drop_privileges: setregid(%d, %d) failed", 3752 (int) RunAsGid, (int) RunAsGid); 3753 rval = EX_OSERR; 3754 } 3755 # else /* HASSETREGID */ 3756 # if HASSETRESGID 3757 if (setresgid(RunAsGid, RunAsGid, RunAsGid) < 0) 3758 { 3759 syserr("drop_privileges: setresgid(%d, %d, %d) failed", 3760 (int) RunAsGid, (int) RunAsGid, (int) RunAsGid); 3761 rval = EX_OSERR; 3762 } 3763 # endif /* HASSETRESGID */ 3764 # endif /* HASSETREGID */ 3765 #endif /* HASSETEGID */ 3766 } 3767 if (rval == EX_OK && (to_real_uid || RunAsGid != 0)) 3768 { 3769 if (setgid(RunAsGid) < 0 && (!UseMSP || getegid() != RunAsGid)) 3770 { 3771 syserr("drop_privileges: setgid(%d) failed", 3772 (int) RunAsGid); 3773 rval = EX_OSERR; 3774 } 3775 errno = 0; 3776 if (rval == EX_OK && getegid() != RunAsGid) 3777 { 3778 syserr("drop_privileges: Unable to set effective gid=%d to RunAsGid=%d", 3779 (int) getegid(), (int) RunAsGid); 3780 rval = EX_OSERR; 3781 } 3782 } 3783 3784 /* fiddle with uid */ 3785 if (to_real_uid || RunAsUid != 0) 3786 { 3787 uid_t euid; 3788 3789 /* 3790 ** Try to setuid(RunAsUid). 3791 ** euid must be RunAsUid, 3792 ** ruid must be RunAsUid unless (e|r)uid wasn't 0 3793 ** and we didn't have to drop privileges to the real uid. 3794 */ 3795 3796 if (setuid(RunAsUid) < 0 || 3797 geteuid() != RunAsUid || 3798 (getuid() != RunAsUid && 3799 (to_real_uid || geteuid() == 0 || getuid() == 0))) 3800 { 3801 #if HASSETREUID 3802 /* 3803 ** if ruid != RunAsUid, euid == RunAsUid, then 3804 ** try resetting just the real uid, then using 3805 ** setuid() to drop the saved-uid as well. 3806 */ 3807 3808 if (geteuid() == RunAsUid) 3809 { 3810 if (setreuid(RunAsUid, -1) < 0) 3811 { 3812 syserr("drop_privileges: setreuid(%d, -1) failed", 3813 (int) RunAsUid); 3814 rval = EX_OSERR; 3815 } 3816 if (setuid(RunAsUid) < 0) 3817 { 3818 syserr("drop_privileges: second setuid(%d) attempt failed", 3819 (int) RunAsUid); 3820 rval = EX_OSERR; 3821 } 3822 } 3823 else 3824 #endif /* HASSETREUID */ 3825 { 3826 syserr("drop_privileges: setuid(%d) failed", 3827 (int) RunAsUid); 3828 rval = EX_OSERR; 3829 } 3830 } 3831 euid = geteuid(); 3832 if (RunAsUid != 0 && setuid(0) == 0) 3833 { 3834 /* 3835 ** Believe it or not, the Linux capability model 3836 ** allows a non-root process to override setuid() 3837 ** on a process running as root and prevent that 3838 ** process from dropping privileges. 3839 */ 3840 3841 syserr("drop_privileges: setuid(0) succeeded (when it should not)"); 3842 rval = EX_OSERR; 3843 } 3844 else if (RunAsUid != euid && setuid(euid) == 0) 3845 { 3846 /* 3847 ** Some operating systems will keep the saved-uid 3848 ** if a non-root effective-uid calls setuid(real-uid) 3849 ** making it possible to set it back again later. 3850 */ 3851 3852 syserr("drop_privileges: Unable to drop non-root set-user-ID privileges"); 3853 rval = EX_OSERR; 3854 } 3855 } 3856 3857 if ((to_real_uid || RunAsGid != 0) && 3858 rval == EX_OK && RunAsGid != EffGid && 3859 getuid() != 0 && geteuid() != 0) 3860 { 3861 errno = 0; 3862 if (setgid(EffGid) == 0) 3863 { 3864 syserr("drop_privileges: setgid(%d) succeeded (when it should not)", 3865 (int) EffGid); 3866 rval = EX_OSERR; 3867 } 3868 } 3869 3870 if (tTd(47, 5)) 3871 { 3872 sm_dprintf("drop_privileges: e/ruid = %d/%d e/rgid = %d/%d\n", 3873 (int) geteuid(), (int) getuid(), 3874 (int) getegid(), (int) getgid()); 3875 sm_dprintf("drop_privileges: RunAsUser = %d:%d\n", 3876 (int) RunAsUid, (int) RunAsGid); 3877 if (tTd(47, 10)) 3878 sm_dprintf("drop_privileges: rval = %d\n", rval); 3879 } 3880 return rval; 3881 } 3882 /* 3883 ** FILL_FD -- make sure a file descriptor has been properly allocated 3884 ** 3885 ** Used to make sure that stdin/out/err are allocated on startup 3886 ** 3887 ** Parameters: 3888 ** fd -- the file descriptor to be filled. 3889 ** where -- a string used for logging. If NULL, this is 3890 ** being called on startup, and logging should 3891 ** not be done. 3892 ** 3893 ** Returns: 3894 ** none 3895 ** 3896 ** Side Effects: 3897 ** possibly changes MissingFds 3898 */ 3899 3900 void 3901 fill_fd(fd, where) 3902 int fd; 3903 char *where; 3904 { 3905 int i; 3906 struct stat stbuf; 3907 3908 if (fstat(fd, &stbuf) >= 0 || errno != EBADF) 3909 return; 3910 3911 if (where != NULL) 3912 syserr("fill_fd: %s: fd %d not open", where, fd); 3913 else 3914 MissingFds |= 1 << fd; 3915 i = open(SM_PATH_DEVNULL, fd == 0 ? O_RDONLY : O_WRONLY, 0666); 3916 if (i < 0) 3917 { 3918 syserr("!fill_fd: %s: cannot open %s", 3919 where == NULL ? "startup" : where, SM_PATH_DEVNULL); 3920 } 3921 if (fd != i) 3922 { 3923 (void) dup2(i, fd); 3924 (void) close(i); 3925 } 3926 } 3927 /* 3928 ** SM_PRINTOPTIONS -- print options 3929 ** 3930 ** Parameters: 3931 ** options -- array of options. 3932 ** 3933 ** Returns: 3934 ** none. 3935 */ 3936 3937 static void 3938 sm_printoptions(options) 3939 char **options; 3940 { 3941 int ll; 3942 char **av; 3943 3944 av = options; 3945 ll = 7; 3946 while (*av != NULL) 3947 { 3948 if (ll + strlen(*av) > 63) 3949 { 3950 sm_dprintf("\n"); 3951 ll = 0; 3952 } 3953 if (ll == 0) 3954 sm_dprintf("\t\t"); 3955 else 3956 sm_dprintf(" "); 3957 sm_dprintf("%s", *av); 3958 ll += strlen(*av++) + 1; 3959 } 3960 sm_dprintf("\n"); 3961 } 3962 3963 /* 3964 ** TO8BIT -- convert \octal sequences in a test mode input line 3965 ** 3966 ** Parameters: 3967 ** str -- the input line. 3968 ** 3969 ** Returns: 3970 ** none. 3971 ** 3972 ** Side Effects: 3973 ** replaces \0octal in str with octal value. 3974 */ 3975 3976 static bool to8bit __P((char *)); 3977 3978 static bool 3979 to8bit(str) 3980 char *str; 3981 { 3982 int c, len; 3983 char *out, *in; 3984 bool changed; 3985 3986 if (str == NULL) 3987 return false; 3988 in = out = str; 3989 changed = false; 3990 len = 0; 3991 while ((c = (*str++ & 0377)) != '\0') 3992 { 3993 int oct, nxtc; 3994 3995 ++len; 3996 if (c == '\\' && 3997 (nxtc = (*str & 0377)) == '0') 3998 { 3999 oct = 0; 4000 while ((nxtc = (*str & 0377)) != '\0' && 4001 isascii(nxtc) && isdigit(nxtc)) 4002 { 4003 oct <<= 3; 4004 oct += nxtc - '0'; 4005 ++str; 4006 ++len; 4007 } 4008 changed = true; 4009 c = oct; 4010 } 4011 *out++ = c; 4012 } 4013 *out++ = c; 4014 if (changed) 4015 { 4016 char *q; 4017 4018 q = quote_internal_chars(in, in, &len); 4019 if (q != in) 4020 sm_strlcpy(in, q, len); 4021 } 4022 return changed; 4023 } 4024 4025 /* 4026 ** TESTMODELINE -- process a test mode input line 4027 ** 4028 ** Parameters: 4029 ** line -- the input line. 4030 ** e -- the current environment. 4031 ** Syntax: 4032 ** # a comment 4033 ** .X process X as a configuration line 4034 ** =X dump a configuration item (such as mailers) 4035 ** $X dump a macro or class 4036 ** /X try an activity 4037 ** X normal process through rule set X 4038 */ 4039 4040 static void 4041 testmodeline(line, e) 4042 char *line; 4043 ENVELOPE *e; 4044 { 4045 register char *p; 4046 char *q; 4047 auto char *delimptr; 4048 int mid; 4049 int i, rs; 4050 STAB *map; 4051 char **s; 4052 struct rewrite *rw; 4053 ADDRESS a; 4054 char *lbp; 4055 auto int lbs; 4056 static int tryflags = RF_COPYNONE; 4057 char exbuf[MAXLINE]; 4058 char lbuf[MAXLINE]; 4059 extern unsigned char TokTypeNoC[]; 4060 bool eightbit; 4061 4062 /* skip leading spaces */ 4063 while (*line == ' ') 4064 line++; 4065 4066 lbp = NULL; 4067 eightbit = false; 4068 switch (line[0]) 4069 { 4070 case '#': 4071 case '\0': 4072 return; 4073 4074 case '?': 4075 help("-bt", e); 4076 return; 4077 4078 case '.': /* config-style settings */ 4079 switch (line[1]) 4080 { 4081 case 'D': 4082 mid = macid_parse(&line[2], &delimptr); 4083 if (mid == 0) 4084 return; 4085 lbs = sizeof(lbuf); 4086 lbp = translate_dollars(delimptr, lbuf, &lbs); 4087 macdefine(&e->e_macro, A_TEMP, mid, lbp); 4088 if (lbp != lbuf) 4089 SM_FREE(lbp); 4090 break; 4091 4092 case 'C': 4093 if (line[2] == '\0') /* not to call syserr() */ 4094 return; 4095 4096 mid = macid_parse(&line[2], &delimptr); 4097 if (mid == 0) 4098 return; 4099 lbs = sizeof(lbuf); 4100 lbp = translate_dollars(delimptr, lbuf, &lbs); 4101 expand(lbp, exbuf, sizeof(exbuf), e); 4102 if (lbp != lbuf) 4103 SM_FREE(lbp); 4104 p = exbuf; 4105 while (*p != '\0') 4106 { 4107 register char *wd; 4108 char delim; 4109 4110 while (*p != '\0' && isascii(*p) && isspace(*p)) 4111 p++; 4112 wd = p; 4113 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 4114 p++; 4115 delim = *p; 4116 *p = '\0'; 4117 if (wd[0] != '\0') 4118 setclass(mid, wd); 4119 *p = delim; 4120 } 4121 break; 4122 4123 case '\0': 4124 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4125 "Usage: .[DC]macro value(s)\n"); 4126 break; 4127 4128 default: 4129 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4130 "Unknown \".\" command %s\n", line); 4131 break; 4132 } 4133 return; 4134 4135 case '=': /* config-style settings */ 4136 switch (line[1]) 4137 { 4138 case 'S': /* dump rule set */ 4139 rs = strtorwset(&line[2], NULL, ST_FIND); 4140 if (rs < 0) 4141 { 4142 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4143 "Undefined ruleset %s\n", &line[2]); 4144 return; 4145 } 4146 rw = RewriteRules[rs]; 4147 if (rw == NULL) 4148 return; 4149 do 4150 { 4151 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4152 'R'); 4153 s = rw->r_lhs; 4154 while (*s != NULL) 4155 { 4156 xputs(smioout, *s++); 4157 (void) sm_io_putc(smioout, 4158 SM_TIME_DEFAULT, ' '); 4159 } 4160 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4161 '\t'); 4162 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4163 '\t'); 4164 s = rw->r_rhs; 4165 while (*s != NULL) 4166 { 4167 xputs(smioout, *s++); 4168 (void) sm_io_putc(smioout, 4169 SM_TIME_DEFAULT, ' '); 4170 } 4171 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4172 '\n'); 4173 } while ((rw = rw->r_next) != NULL); 4174 break; 4175 4176 case 'M': 4177 for (i = 0; i < MAXMAILERS; i++) 4178 { 4179 if (Mailer[i] != NULL) 4180 printmailer(smioout, Mailer[i]); 4181 } 4182 break; 4183 4184 case '\0': 4185 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4186 "Usage: =Sruleset or =M\n"); 4187 break; 4188 4189 default: 4190 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4191 "Unknown \"=\" command %s\n", line); 4192 break; 4193 } 4194 return; 4195 4196 case '-': /* set command-line-like opts */ 4197 switch (line[1]) 4198 { 4199 case 'd': 4200 tTflag(&line[2]); 4201 break; 4202 4203 case '\0': 4204 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4205 "Usage: -d{debug arguments}\n"); 4206 break; 4207 4208 default: 4209 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4210 "Unknown \"-\" command %s\n", line); 4211 break; 4212 } 4213 return; 4214 4215 case '$': 4216 if (line[1] == '=') 4217 { 4218 mid = macid(&line[2]); 4219 if (mid != 0) 4220 stabapply(dump_class, mid); 4221 return; 4222 } 4223 mid = macid(&line[1]); 4224 if (mid == 0) 4225 return; 4226 p = macvalue(mid, e); 4227 if (p == NULL) 4228 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4229 "Undefined\n"); 4230 else 4231 { 4232 xputs(smioout, p); 4233 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4234 "\n"); 4235 } 4236 return; 4237 4238 case '/': /* miscellaneous commands */ 4239 p = &line[strlen(line)]; 4240 while (--p >= line && isascii(*p) && isspace(*p)) 4241 *p = '\0'; 4242 p = strpbrk(line, " \t"); 4243 if (p != NULL) 4244 { 4245 while (isascii(*p) && isspace(*p)) 4246 *p++ = '\0'; 4247 } 4248 else 4249 p = ""; 4250 if (line[1] == '\0') 4251 { 4252 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4253 "Usage: /[canon|map|mx|parse|try|tryflags]\n"); 4254 return; 4255 } 4256 if (sm_strcasecmp(&line[1], "quit") == 0) 4257 { 4258 CurEnv->e_id = NULL; 4259 finis(true, true, ExitStat); 4260 /* NOTREACHED */ 4261 } 4262 if (sm_strcasecmp(&line[1], "mx") == 0) 4263 { 4264 #if NAMED_BIND 4265 /* look up MX records */ 4266 int nmx; 4267 auto int rcode; 4268 char *mxhosts[MAXMXHOSTS + 1]; 4269 4270 if (*p == '\0') 4271 { 4272 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4273 "Usage: /mx address\n"); 4274 return; 4275 } 4276 nmx = getmxrr(p, mxhosts, NULL, false, &rcode, true, 4277 NULL); 4278 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4279 "getmxrr(%s) returns %d value(s):\n", 4280 p, nmx); 4281 for (i = 0; i < nmx; i++) 4282 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4283 "\t%s\n", mxhosts[i]); 4284 #else /* NAMED_BIND */ 4285 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4286 "No MX code compiled in\n"); 4287 #endif /* NAMED_BIND */ 4288 } 4289 else if (sm_strcasecmp(&line[1], "canon") == 0) 4290 { 4291 char host[MAXHOSTNAMELEN]; 4292 4293 if (*p == '\0') 4294 { 4295 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4296 "Usage: /canon address\n"); 4297 return; 4298 } 4299 else if (sm_strlcpy(host, p, sizeof(host)) >= sizeof(host)) 4300 { 4301 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4302 "Name too long\n"); 4303 return; 4304 } 4305 (void) getcanonname(host, sizeof(host), !HasWildcardMX, 4306 NULL); 4307 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4308 "getcanonname(%s) returns %s\n", 4309 p, host); 4310 } 4311 else if (sm_strcasecmp(&line[1], "map") == 0) 4312 { 4313 auto int rcode = EX_OK; 4314 char *av[2]; 4315 4316 if (*p == '\0') 4317 { 4318 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4319 "Usage: /map mapname key\n"); 4320 return; 4321 } 4322 for (q = p; *q != '\0' && !(isascii(*q) && isspace(*q)); q++) 4323 continue; 4324 if (*q == '\0') 4325 { 4326 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4327 "No key specified\n"); 4328 return; 4329 } 4330 *q++ = '\0'; 4331 map = stab(p, ST_MAP, ST_FIND); 4332 if (map == NULL) 4333 { 4334 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4335 "Map named \"%s\" not found\n", p); 4336 return; 4337 } 4338 if (!bitset(MF_OPEN, map->s_map.map_mflags) && 4339 !openmap(&(map->s_map))) 4340 { 4341 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4342 "Map named \"%s\" not open\n", p); 4343 return; 4344 } 4345 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4346 "map_lookup: %s (%s) ", p, q); 4347 av[0] = q; 4348 av[1] = NULL; 4349 p = (*map->s_map.map_class->map_lookup) 4350 (&map->s_map, q, av, &rcode); 4351 if (p == NULL) 4352 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4353 "no match (%d)\n", 4354 rcode); 4355 else 4356 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4357 "returns %s (%d)\n", p, 4358 rcode); 4359 } 4360 else if (sm_strcasecmp(&line[1], "try") == 0) 4361 { 4362 MAILER *m; 4363 STAB *st; 4364 auto int rcode = EX_OK; 4365 4366 q = strpbrk(p, " \t"); 4367 if (q != NULL) 4368 { 4369 while (isascii(*q) && isspace(*q)) 4370 *q++ = '\0'; 4371 } 4372 if (q == NULL || *q == '\0') 4373 { 4374 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4375 "Usage: /try mailer address\n"); 4376 return; 4377 } 4378 st = stab(p, ST_MAILER, ST_FIND); 4379 if (st == NULL) 4380 { 4381 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4382 "Unknown mailer %s\n", p); 4383 return; 4384 } 4385 m = st->s_mailer; 4386 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4387 "Trying %s %s address %s for mailer %s\n", 4388 bitset(RF_HEADERADDR, tryflags) ? "header" 4389 : "envelope", 4390 bitset(RF_SENDERADDR, tryflags) ? "sender" 4391 : "recipient", q, p); 4392 p = remotename(q, m, tryflags, &rcode, CurEnv); 4393 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4394 "Rcode = %d, addr = %s\n", 4395 rcode, p == NULL ? "<NULL>" : p); 4396 e->e_to = NULL; 4397 } 4398 else if (sm_strcasecmp(&line[1], "tryflags") == 0) 4399 { 4400 if (*p == '\0') 4401 { 4402 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4403 "Usage: /tryflags [Hh|Ee][Ss|Rr]\n"); 4404 return; 4405 } 4406 for (; *p != '\0'; p++) 4407 { 4408 switch (*p) 4409 { 4410 case 'H': 4411 case 'h': 4412 tryflags |= RF_HEADERADDR; 4413 break; 4414 4415 case 'E': 4416 case 'e': 4417 tryflags &= ~RF_HEADERADDR; 4418 break; 4419 4420 case 'S': 4421 case 's': 4422 tryflags |= RF_SENDERADDR; 4423 break; 4424 4425 case 'R': 4426 case 'r': 4427 tryflags &= ~RF_SENDERADDR; 4428 break; 4429 } 4430 } 4431 exbuf[0] = bitset(RF_HEADERADDR, tryflags) ? 'h' : 'e'; 4432 exbuf[1] = ' '; 4433 exbuf[2] = bitset(RF_SENDERADDR, tryflags) ? 's' : 'r'; 4434 exbuf[3] = '\0'; 4435 macdefine(&e->e_macro, A_TEMP, 4436 macid("{addr_type}"), exbuf); 4437 } 4438 else if (sm_strcasecmp(&line[1], "parse") == 0) 4439 { 4440 if (*p == '\0') 4441 { 4442 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4443 "Usage: /parse address\n"); 4444 return; 4445 } 4446 q = crackaddr(p, e); 4447 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4448 "Cracked address = "); 4449 xputs(smioout, q); 4450 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4451 "\nParsing %s %s address\n", 4452 bitset(RF_HEADERADDR, tryflags) ? 4453 "header" : "envelope", 4454 bitset(RF_SENDERADDR, tryflags) ? 4455 "sender" : "recipient"); 4456 if (parseaddr(p, &a, tryflags, '\0', NULL, e, true) 4457 == NULL) 4458 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4459 "Cannot parse\n"); 4460 else if (a.q_host != NULL && a.q_host[0] != '\0') 4461 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4462 "mailer %s, host %s, user %s\n", 4463 a.q_mailer->m_name, 4464 a.q_host, 4465 a.q_user); 4466 else 4467 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4468 "mailer %s, user %s\n", 4469 a.q_mailer->m_name, 4470 a.q_user); 4471 e->e_to = NULL; 4472 } 4473 else if (sm_strcasecmp(&line[1], "header") == 0) 4474 { 4475 unsigned long ul; 4476 4477 ul = chompheader(p, CHHDR_CHECK|CHHDR_USER, NULL, e); 4478 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4479 "ul = %lu\n", ul); 4480 } 4481 else 4482 { 4483 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4484 "Unknown \"/\" command %s\n", 4485 line); 4486 } 4487 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 4488 return; 4489 } 4490 4491 for (p = line; isascii(*p) && isspace(*p); p++) 4492 continue; 4493 q = p; 4494 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 4495 p++; 4496 if (*p == '\0') 4497 { 4498 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4499 "No address!\n"); 4500 return; 4501 } 4502 *p = '\0'; 4503 if (tTd(23, 101)) 4504 eightbit = to8bit(p + 1); 4505 if (invalidaddr(p + 1, NULL, true)) 4506 return; 4507 do 4508 { 4509 register char **pvp; 4510 char pvpbuf[PSBUFSIZE]; 4511 4512 pvp = prescan(++p, ',', pvpbuf, sizeof(pvpbuf), &delimptr, 4513 ConfigLevel >= 9 ? TokTypeNoC : ExtTokenTab, false); 4514 if (pvp == NULL) 4515 continue; 4516 p = q; 4517 while (*p != '\0') 4518 { 4519 int status; 4520 4521 rs = strtorwset(p, NULL, ST_FIND); 4522 if (rs < 0) 4523 { 4524 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4525 "Undefined ruleset %s\n", 4526 p); 4527 break; 4528 } 4529 status = REWRITE(pvp, rs, e); 4530 if (status != EX_OK) 4531 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4532 "== Ruleset %s (%d) status %d\n", 4533 p, rs, status); 4534 else if (eightbit) 4535 { 4536 cataddr(pvp, NULL, exbuf, sizeof(exbuf), '\0', 4537 true); 4538 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4539 "cataddr: %s\n", 4540 str2prt(exbuf)); 4541 } 4542 while (*p != '\0' && *p++ != ',') 4543 continue; 4544 } 4545 } while (*(p = delimptr) != '\0'); 4546 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 4547 } 4548 4549 static void 4550 dump_class(s, id) 4551 register STAB *s; 4552 int id; 4553 { 4554 if (s->s_symtype != ST_CLASS) 4555 return; 4556 if (bitnset(bitidx(id), s->s_class)) 4557 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4558 "%s\n", s->s_name); 4559 } 4560 4561 /* 4562 ** An exception type used to create QuickAbort exceptions. 4563 ** This is my first cut at converting QuickAbort from longjmp to exceptions. 4564 ** These exceptions have a single integer argument, which is the argument 4565 ** to longjmp in the original code (either 1 or 2). I don't know the 4566 ** significance of 1 vs 2: the calls to setjmp don't care. 4567 */ 4568 4569 const SM_EXC_TYPE_T EtypeQuickAbort = 4570 { 4571 SmExcTypeMagic, 4572 "E:mta.quickabort", 4573 "i", 4574 sm_etype_printf, 4575 "quick abort %0", 4576 }; 4577