1/* 2 * Copyright (c) 1998-2006, 2008, 2009, 2011 Proofpoint, 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 21SM_UNUSED(static char copyright[]) = 22"@(#) Copyright (c) 1998-2013 Proofpoint, 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 29SM_RCSID("@(#)$Id: main.c,v 8.988 2013-11-23 02:52:37 gshapiro Exp $") 30 31 32#if NETINET || NETINET6 33# include <arpa/inet.h> 34#endif /* NETINET || NETINET6 */ 35 36/* for getcfname() */ 37#include <sendmail/pathnames.h> 38 39static SM_DEBUG_T 40DebugNoPRestart = SM_DEBUG_INITIALIZER("no_persistent_restart", 41 "@(#)$Debug: no_persistent_restart - don't restart, log only $"); 42 43static void dump_class __P((STAB *, int)); 44static void obsolete __P((char **)); 45static void testmodeline __P((char *, ENVELOPE *)); 46static char *getextenv __P((const char *)); 47static void sm_printoptions __P((char **)); 48static SIGFUNC_DECL intindebug __P((int)); 49static SIGFUNC_DECL sighup __P((int)); 50static SIGFUNC_DECL sigpipe __P((int)); 51static SIGFUNC_DECL sigterm __P((int)); 52#ifdef SIGUSR1 53static 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 - 9/13). 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 - 10/13). 88** Proofpoint, Inc. (10/13 - present). 89** 90** Claus Assmann, 91** Sendmail, Inc. (12/98 - 10/13). 92** Proofpoint, Inc. (10/13 - present). 93*/ 94 95char *FullName; /* sender's full name */ 96ENVELOPE BlankEnvelope; /* a "blank" envelope */ 97static ENVELOPE MainEnvelope; /* the envelope around the basic letter */ 98ADDRESS NullAddress = /* a null address */ 99 { "", "", NULL, "" }; 100char *CommandLineArgs; /* command line args for pid file */ 101bool Warn_Q_option = false; /* warn about Q option use */ 102static int MissingFds = 0; /* bit map of fds missing on startup */ 103char *Mbdb = "pw"; /* mailbox database defaults to /etc/passwd */ 104 105#ifdef NGROUPS_MAX 106GIDSET_T InitialGidSet[NGROUPS_MAX]; 107#endif /* NGROUPS_MAX */ 108 109#define MAXCONFIGLEVEL 10 /* highest config version level known */ 110 111#if SASL 112static sasl_callback_t srvcallbacks[] = 113{ 114 { SASL_CB_VERIFYFILE, (sasl_callback_ft)&safesaslfile, NULL }, 115 { SASL_CB_PROXY_POLICY, (sasl_callback_ft)&proxy_policy, NULL }, 116 { SASL_CB_LIST_END, NULL, NULL } 117}; 118#endif /* SASL */ 119 120unsigned int SubmitMode; 121int SyslogPrefixLen; /* estimated length of syslog prefix */ 122#define PIDLEN 6 /* pid length for computing SyslogPrefixLen */ 123#ifndef SL_FUDGE 124# define SL_FUDGE 10 /* fudge offset for SyslogPrefixLen */ 125#endif /* ! SL_FUDGE */ 126#define SLDLL 8 /* est. length of default syslog label */ 127 128 129/* Some options are dangerous to allow users to use in non-submit mode */ 130#define CHECK_AGAINST_OPMODE(cmd) \ 131{ \ 132 if (extraprivs && \ 133 OpMode != MD_DELIVER && OpMode != MD_SMTP && \ 134 OpMode != MD_ARPAFTP && OpMode != MD_CHECKCONFIG && \ 135 OpMode != MD_VERIFY && OpMode != MD_TEST) \ 136 { \ 137 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \ 138 "WARNING: Ignoring submission mode -%c option (not in submission mode)\n", \ 139 (cmd)); \ 140 break; \ 141 } \ 142 if (extraprivs && queuerun) \ 143 { \ 144 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \ 145 "WARNING: Ignoring submission mode -%c option with -q\n", \ 146 (cmd)); \ 147 break; \ 148 } \ 149} 150 151int 152main(argc, argv, envp) 153 int argc; 154 char **argv; 155 char **envp; 156{ 157 register char *p; 158 char **av; 159 extern char Version[]; 160 char *ep, *from; 161 STAB *st; 162 register int i; 163 int j; 164 int dp; 165 int fill_errno; 166 int qgrp = NOQGRP; /* queue group to process */ 167 bool safecf = true; 168 BITMAP256 *p_flags = NULL; /* daemon flags */ 169 bool warn_C_flag = false; 170 bool auth = true; /* whether to set e_auth_param */ 171 char warn_f_flag = '\0'; 172 bool run_in_foreground = false; /* -bD mode */ 173 bool queuerun = false, debug = false; 174 struct passwd *pw; 175 struct hostent *hp; 176 char *nullserver = NULL; 177 char *authinfo = NULL; 178 char *sysloglabel = NULL; /* label for syslog */ 179 char *conffile = NULL; /* name of .cf file */ 180 char *queuegroup = NULL; /* queue group to process */ 181 char *quarantining = NULL; /* quarantine queue items? */ 182 bool extraprivs; 183 bool forged, negate; 184 bool queuepersistent = false; /* queue runner process runs forever */ 185 bool foregroundqueue = false; /* queue run in foreground */ 186 bool save_val; /* to save some bool var. */ 187 int cftype; /* which cf file to use? */ 188 SM_FILE_T *smdebug; 189 static time_t starttime = 0; /* when was process started */ 190 struct stat traf_st; /* for TrafficLog FIFO check */ 191 char buf[MAXLINE]; 192 char jbuf[MAXHOSTNAMELEN]; /* holds MyHostName */ 193 static char rnamebuf[MAXNAME]; /* holds RealUserName */ 194 char *emptyenviron[1]; 195#if STARTTLS 196 bool tls_ok; 197#endif /* STARTTLS */ 198 QUEUE_CHAR *new; 199 ENVELOPE *e; 200 extern int DtableSize; 201 extern int optind; 202 extern int opterr; 203 extern char *optarg; 204 extern char **environ; 205#if SASL 206 extern void sm_sasl_init __P((void)); 207#endif /* SASL */ 208 209#if USE_ENVIRON 210 envp = environ; 211#endif /* USE_ENVIRON */ 212 213 /* turn off profiling */ 214 SM_PROF(0); 215 216 /* install default exception handler */ 217 sm_exc_newthread(fatal_error); 218 219 /* set the default in/out channel so errors reported to screen */ 220 InChannel = smioin; 221 OutChannel = smioout; 222 223 /* 224 ** Check to see if we reentered. 225 ** This would normally happen if e_putheader or e_putbody 226 ** were NULL when invoked. 227 */ 228 229 if (starttime != 0) 230 { 231 syserr("main: reentered!"); 232 abort(); 233 } 234 starttime = curtime(); 235 236 /* avoid null pointer dereferences */ 237 TermEscape.te_rv_on = TermEscape.te_under_on = TermEscape.te_normal = ""; 238 239 RealUid = getuid(); 240 RealGid = getgid(); 241 242 /* Check if sendmail is running with extra privs */ 243 extraprivs = (RealUid != 0 && 244 (geteuid() != getuid() || getegid() != getgid())); 245 246 CurrentPid = getpid(); 247 248 /* get whatever .cf file is right for the opmode */ 249 cftype = SM_GET_RIGHT_CF; 250 251 /* in 4.4BSD, the table can be huge; impose a reasonable limit */ 252 DtableSize = getdtsize(); 253 if (DtableSize > 256) 254 DtableSize = 256; 255 256 /* 257 ** Be sure we have enough file descriptors. 258 ** But also be sure that 0, 1, & 2 are open. 259 */ 260 261 /* reset errno and fill_errno; the latter is used way down below */ 262 errno = fill_errno = 0; 263 fill_fd(STDIN_FILENO, NULL); 264 if (errno != 0) 265 fill_errno = errno; 266 fill_fd(STDOUT_FILENO, NULL); 267 if (errno != 0) 268 fill_errno = errno; 269 fill_fd(STDERR_FILENO, NULL); 270 if (errno != 0) 271 fill_errno = errno; 272 273 sm_closefrom(STDERR_FILENO + 1, DtableSize); 274 errno = 0; 275 smdebug = NULL; 276 277#if LOG 278# ifndef SM_LOG_STR 279# define SM_LOG_STR "sendmail" 280# endif /* ! SM_LOG_STR */ 281# ifdef LOG_MAIL 282 openlog(SM_LOG_STR, LOG_PID, LOG_MAIL); 283# else /* LOG_MAIL */ 284 openlog(SM_LOG_STR, LOG_PID); 285# endif /* LOG_MAIL */ 286#endif /* LOG */ 287 288 /* 289 ** Seed the random number generator. 290 ** Used for queue file names, picking a queue directory, and 291 ** MX randomization. 292 */ 293 294 seed_random(); 295 296 /* do machine-dependent initializations */ 297 init_md(argc, argv); 298 299 300 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + SL_FUDGE + SLDLL; 301 302 /* reset status from syserr() calls for missing file descriptors */ 303 Errors = 0; 304 ExitStat = EX_OK; 305 306 SubmitMode = SUBMIT_UNKNOWN; 307#if _FFR_LOCAL_DAEMON 308 LocalDaemon = false; 309# if NETINET6 310 V6LoopbackAddrFound = false; 311# endif /* NETINET6 */ 312#endif /* _FFR_LOCAL_DAEMON */ 313#if XDEBUG 314 checkfd012("after openlog"); 315#endif /* XDEBUG */ 316 317 tTsetup(tTdvect, sizeof(tTdvect), "0-99.1,*_trace_*.1"); 318 319#ifdef NGROUPS_MAX 320 /* save initial group set for future checks */ 321 i = getgroups(NGROUPS_MAX, InitialGidSet); 322 if (i <= 0) 323 { 324 InitialGidSet[0] = (GID_T) -1; 325 i = 0; 326 } 327 while (i < NGROUPS_MAX) 328 InitialGidSet[i++] = InitialGidSet[0]; 329#endif /* NGROUPS_MAX */ 330 331 /* drop group id privileges (RunAsUser not yet set) */ 332 dp = drop_privileges(false); 333 setstat(dp); 334 335#ifdef SIGUSR1 336 /* Only allow root (or non-set-*-ID binaries) to use SIGUSR1 */ 337 if (!extraprivs) 338 { 339 /* arrange to dump state on user-1 signal */ 340 (void) sm_signal(SIGUSR1, sigusr1); 341 } 342 else 343 { 344 /* ignore user-1 signal */ 345 (void) sm_signal(SIGUSR1, SIG_IGN); 346 } 347#endif /* SIGUSR1 */ 348 349 /* initialize for setproctitle */ 350 initsetproctitle(argc, argv, envp); 351 352 /* Handle any non-getoptable constructions. */ 353 obsolete(argv); 354 355 /* 356 ** Do a quick prescan of the argument list. 357 */ 358 359 360 /* find initial opMode */ 361 OpMode = MD_DELIVER; 362 av = argv; 363 p = strrchr(*av, '/'); 364 if (p++ == NULL) 365 p = *av; 366 if (strcmp(p, "newaliases") == 0) 367 OpMode = MD_INITALIAS; 368 else if (strcmp(p, "mailq") == 0) 369 OpMode = MD_PRINT; 370 else if (strcmp(p, "smtpd") == 0) 371 OpMode = MD_DAEMON; 372 else if (strcmp(p, "hoststat") == 0) 373 OpMode = MD_HOSTSTAT; 374 else if (strcmp(p, "purgestat") == 0) 375 OpMode = MD_PURGESTAT; 376 377#if defined(__osf__) || defined(_AIX3) 378# 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" 379#endif /* defined(__osf__) || defined(_AIX3) */ 380#if defined(sony_news) 381# 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:" 382#endif /* defined(sony_news) */ 383#ifndef OPTIONS 384# define OPTIONS "A:B:b:C:cD:d:e:F:f:Gh:IiL:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:" 385#endif /* ! OPTIONS */ 386 387 /* Set to 0 to allow -b; need to check optarg before using it! */ 388 opterr = 0; 389 while ((j = getopt(argc, argv, OPTIONS)) != -1) 390 { 391 switch (j) 392 { 393 case 'b': /* operations mode */ 394 j = (optarg == NULL) ? ' ' : *optarg; 395 switch (j) 396 { 397 case MD_DAEMON: 398 case MD_FGDAEMON: 399 case MD_SMTP: 400 case MD_INITALIAS: 401 case MD_DELIVER: 402 case MD_VERIFY: 403 case MD_TEST: 404 case MD_PRINT: 405 case MD_PRINTNQE: 406 case MD_HOSTSTAT: 407 case MD_PURGESTAT: 408 case MD_ARPAFTP: 409 case MD_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#if STARTTLS 647 if (tTd(0, 14)) 648 { 649 /* exit(EX_CONFIG) if different? */ 650 sm_dprintf(" OpenSSL: compiled 0x%08x\n", 651 (uint) OPENSSL_VERSION_NUMBER); 652 sm_dprintf(" OpenSSL: linked 0x%08x\n", 653 (uint) SSLeay()); 654 } 655#endif /* STARTTLS */ 656 657 /* clear sendmail's environment */ 658 ExternalEnviron = environ; 659 emptyenviron[0] = NULL; 660 environ = emptyenviron; 661 662 /* 663 ** restore any original TZ setting until TimeZoneSpec has been 664 ** determined - or early log messages may get bogus time stamps 665 */ 666 667 if ((p = getextenv("TZ")) != NULL) 668 { 669 char *tz; 670 int tzlen; 671 672 /* XXX check for reasonable length? */ 673 tzlen = strlen(p) + 4; 674 tz = xalloc(tzlen); 675 (void) sm_strlcpyn(tz, tzlen, 2, "TZ=", p); 676 677 /* XXX check return code? */ 678 (void) putenv(tz); 679 } 680 681 /* prime the child environment */ 682 sm_setuserenv("AGENT", "sendmail"); 683 684 (void) sm_signal(SIGPIPE, SIG_IGN); 685 OldUmask = umask(022); 686 FullName = getextenv("NAME"); 687 if (FullName != NULL) 688 FullName = newstr(FullName); 689 690 /* 691 ** Initialize name server if it is going to be used. 692 */ 693 694#if NAMED_BIND 695 if (!bitset(RES_INIT, _res.options)) 696 (void) res_init(); 697 if (tTd(8, 8)) 698 _res.options |= RES_DEBUG; 699 else 700 _res.options &= ~RES_DEBUG; 701# ifdef RES_NOALIASES 702 _res.options |= RES_NOALIASES; 703# endif /* RES_NOALIASES */ 704 TimeOuts.res_retry[RES_TO_DEFAULT] = _res.retry; 705 TimeOuts.res_retry[RES_TO_FIRST] = _res.retry; 706 TimeOuts.res_retry[RES_TO_NORMAL] = _res.retry; 707 TimeOuts.res_retrans[RES_TO_DEFAULT] = _res.retrans; 708 TimeOuts.res_retrans[RES_TO_FIRST] = _res.retrans; 709 TimeOuts.res_retrans[RES_TO_NORMAL] = _res.retrans; 710#endif /* NAMED_BIND */ 711 712 errno = 0; 713 from = NULL; 714 715 /* initialize some macros, etc. */ 716 init_vendor_macros(&BlankEnvelope); 717 718 /* version */ 719 macdefine(&BlankEnvelope.e_macro, A_PERM, 'v', Version); 720 721 /* hostname */ 722 hp = myhostname(jbuf, sizeof(jbuf)); 723 if (jbuf[0] != '\0') 724 { 725 struct utsname utsname; 726 727 if (tTd(0, 4)) 728 sm_dprintf("Canonical name: %s\n", jbuf); 729 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'w', jbuf); 730 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'j', jbuf); 731 setclass('w', jbuf); 732 733 p = strchr(jbuf, '.'); 734 if (p != NULL && p[1] != '\0') 735 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'm', &p[1]); 736 737 if (uname(&utsname) >= 0) 738 p = utsname.nodename; 739 else 740 { 741 if (tTd(0, 22)) 742 sm_dprintf("uname failed (%s)\n", 743 sm_errstring(errno)); 744 makelower(jbuf); 745 p = jbuf; 746 } 747 if (tTd(0, 4)) 748 sm_dprintf(" UUCP nodename: %s\n", p); 749 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'k', p); 750 setclass('k', p); 751 setclass('w', p); 752 } 753 if (hp != NULL) 754 { 755 for (av = hp->h_aliases; av != NULL && *av != NULL; av++) 756 { 757 if (tTd(0, 4)) 758 sm_dprintf("\ta.k.a.: %s\n", *av); 759 setclass('w', *av); 760 } 761#if NETINET || NETINET6 762 for (i = 0; i >= 0 && hp->h_addr_list[i] != NULL; i++) 763 { 764# if NETINET6 765 char *addr; 766 char buf6[INET6_ADDRSTRLEN]; 767 struct in6_addr ia6; 768# endif /* NETINET6 */ 769# if NETINET 770 struct in_addr ia; 771# endif /* NETINET */ 772 char ipbuf[103]; 773 774 ipbuf[0] = '\0'; 775 switch (hp->h_addrtype) 776 { 777# if NETINET 778 case AF_INET: 779 if (hp->h_length != INADDRSZ) 780 break; 781 782 memmove(&ia, hp->h_addr_list[i], INADDRSZ); 783 (void) sm_snprintf(ipbuf, sizeof(ipbuf), 784 "[%.100s]", inet_ntoa(ia)); 785 break; 786# endif /* NETINET */ 787 788# if NETINET6 789 case AF_INET6: 790 if (hp->h_length != IN6ADDRSZ) 791 break; 792 793 memmove(&ia6, hp->h_addr_list[i], IN6ADDRSZ); 794 addr = anynet_ntop(&ia6, buf6, sizeof(buf6)); 795 if (addr != NULL) 796 (void) sm_snprintf(ipbuf, sizeof(ipbuf), 797 "[%.100s]", addr); 798 break; 799# endif /* NETINET6 */ 800 } 801 if (ipbuf[0] == '\0') 802 break; 803 804 if (tTd(0, 4)) 805 sm_dprintf("\ta.k.a.: %s\n", ipbuf); 806 setclass('w', ipbuf); 807 } 808#endif /* NETINET || NETINET6 */ 809#if NETINET6 810 freehostent(hp); 811 hp = NULL; 812#endif /* NETINET6 */ 813 } 814 815 /* current time */ 816 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'b', arpadate((char *) NULL)); 817 818 /* current load average */ 819 sm_getla(); 820 821 QueueLimitRecipient = (QUEUE_CHAR *) NULL; 822 QueueLimitSender = (QUEUE_CHAR *) NULL; 823 QueueLimitId = (QUEUE_CHAR *) NULL; 824 QueueLimitQuarantine = (QUEUE_CHAR *) NULL; 825 826 /* 827 ** Crack argv. 828 */ 829 830 optind = 1; 831 while ((j = getopt(argc, argv, OPTIONS)) != -1) 832 { 833 switch (j) 834 { 835 case 'b': /* operations mode */ 836 /* already done */ 837 break; 838 839 case 'A': /* use Alternate sendmail/submit.cf */ 840 cftype = optarg[0] == 'c' ? SM_GET_SUBMIT_CF 841 : SM_GET_SENDMAIL_CF; 842 break; 843 844 case 'B': /* body type */ 845 CHECK_AGAINST_OPMODE(j); 846 BlankEnvelope.e_bodytype = newstr(optarg); 847 break; 848 849 case 'C': /* select configuration file (already done) */ 850 if (RealUid != 0) 851 warn_C_flag = true; 852 conffile = newstr(optarg); 853 dp = drop_privileges(true); 854 setstat(dp); 855 safecf = false; 856 break; 857 858 case 'D': 859 case 'd': /* debugging */ 860 /* already done */ 861 break; 862 863 case 'f': /* from address */ 864 case 'r': /* obsolete -f flag */ 865 CHECK_AGAINST_OPMODE(j); 866 if (from != NULL) 867 { 868 usrerr("More than one \"from\" person"); 869 ExitStat = EX_USAGE; 870 break; 871 } 872 if (optarg[0] == '\0') 873 from = newstr("<>"); 874 else 875 from = newstr(denlstring(optarg, true, true)); 876 if (strcmp(RealUserName, from) != 0) 877 warn_f_flag = j; 878 break; 879 880 case 'F': /* set full name */ 881 CHECK_AGAINST_OPMODE(j); 882 FullName = newstr(optarg); 883 break; 884 885 case 'G': /* relay (gateway) submission */ 886 /* already set */ 887 CHECK_AGAINST_OPMODE(j); 888 break; 889 890 case 'h': /* hop count */ 891 CHECK_AGAINST_OPMODE(j); 892 BlankEnvelope.e_hopcount = (short) strtol(optarg, &ep, 893 10); 894 (void) sm_snprintf(buf, sizeof(buf), "%d", 895 BlankEnvelope.e_hopcount); 896 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'c', buf); 897 898 if (*ep) 899 { 900 usrerr("Bad hop count (%s)", optarg); 901 ExitStat = EX_USAGE; 902 } 903 break; 904 905 case 'L': /* program label */ 906 /* already set */ 907 break; 908 909 case 'n': /* don't alias */ 910 CHECK_AGAINST_OPMODE(j); 911 NoAlias = true; 912 break; 913 914 case 'N': /* delivery status notifications */ 915 CHECK_AGAINST_OPMODE(j); 916 DefaultNotify |= QHASNOTIFY; 917 macdefine(&BlankEnvelope.e_macro, A_TEMP, 918 macid("{dsn_notify}"), optarg); 919 if (sm_strcasecmp(optarg, "never") == 0) 920 break; 921 for (p = optarg; p != NULL; optarg = p) 922 { 923 p = strchr(p, ','); 924 if (p != NULL) 925 *p++ = '\0'; 926 if (sm_strcasecmp(optarg, "success") == 0) 927 DefaultNotify |= QPINGONSUCCESS; 928 else if (sm_strcasecmp(optarg, "failure") == 0) 929 DefaultNotify |= QPINGONFAILURE; 930 else if (sm_strcasecmp(optarg, "delay") == 0) 931 DefaultNotify |= QPINGONDELAY; 932 else 933 { 934 usrerr("Invalid -N argument"); 935 ExitStat = EX_USAGE; 936 } 937 } 938 break; 939 940 case 'o': /* set option */ 941 setoption(*optarg, optarg + 1, false, true, 942 &BlankEnvelope); 943 break; 944 945 case 'O': /* set option (long form) */ 946 setoption(' ', optarg, false, true, &BlankEnvelope); 947 break; 948 949 case 'p': /* set protocol */ 950 CHECK_AGAINST_OPMODE(j); 951 p = strchr(optarg, ':'); 952 if (p != NULL) 953 { 954 *p++ = '\0'; 955 if (*p != '\0') 956 { 957 i = strlen(p) + 1; 958 ep = sm_malloc_x(i); 959 cleanstrcpy(ep, p, i); 960 macdefine(&BlankEnvelope.e_macro, 961 A_HEAP, 's', ep); 962 } 963 } 964 if (*optarg != '\0') 965 { 966 i = strlen(optarg) + 1; 967 ep = sm_malloc_x(i); 968 cleanstrcpy(ep, optarg, i); 969 macdefine(&BlankEnvelope.e_macro, A_HEAP, 970 'r', ep); 971 } 972 break; 973 974 case 'Q': /* change quarantining on queued items */ 975 /* sanity check */ 976 if (OpMode != MD_DELIVER && 977 OpMode != MD_QUEUERUN) 978 { 979 usrerr("Can not use -Q with -b%c", OpMode); 980 ExitStat = EX_USAGE; 981 break; 982 } 983 984 if (OpMode == MD_DELIVER) 985 set_op_mode(MD_QUEUERUN); 986 987 FullName = NULL; 988 989 quarantining = newstr(optarg); 990 break; 991 992 case 'q': /* run queue files at intervals */ 993 /* sanity check */ 994 if (OpMode != MD_DELIVER && 995 OpMode != MD_DAEMON && 996 OpMode != MD_FGDAEMON && 997 OpMode != MD_PRINT && 998 OpMode != MD_PRINTNQE && 999 OpMode != MD_QUEUERUN) 1000 { 1001 usrerr("Can not use -q with -b%c", OpMode); 1002 ExitStat = EX_USAGE; 1003 break; 1004 } 1005 1006 /* don't override -bd, -bD or -bp */ 1007 if (OpMode == MD_DELIVER) 1008 set_op_mode(MD_QUEUERUN); 1009 1010 FullName = NULL; 1011 negate = optarg[0] == '!'; 1012 if (negate) 1013 { 1014 /* negate meaning of pattern match */ 1015 optarg++; /* skip '!' for next switch */ 1016 } 1017 1018 switch (optarg[0]) 1019 { 1020 case 'G': /* Limit by queue group name */ 1021 if (negate) 1022 { 1023 usrerr("Can not use -q!G"); 1024 ExitStat = EX_USAGE; 1025 break; 1026 } 1027 if (queuegroup != NULL) 1028 { 1029 usrerr("Can not use multiple -qG options"); 1030 ExitStat = EX_USAGE; 1031 break; 1032 } 1033 queuegroup = newstr(&optarg[1]); 1034 break; 1035 1036 case 'I': /* Limit by ID */ 1037 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1038 new->queue_match = newstr(&optarg[1]); 1039 new->queue_negate = negate; 1040 new->queue_next = QueueLimitId; 1041 QueueLimitId = new; 1042 break; 1043 1044 case 'R': /* Limit by recipient */ 1045 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1046 new->queue_match = newstr(&optarg[1]); 1047 new->queue_negate = negate; 1048 new->queue_next = QueueLimitRecipient; 1049 QueueLimitRecipient = new; 1050 break; 1051 1052 case 'S': /* Limit by sender */ 1053 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1054 new->queue_match = newstr(&optarg[1]); 1055 new->queue_negate = negate; 1056 new->queue_next = QueueLimitSender; 1057 QueueLimitSender = new; 1058 break; 1059 1060 case 'f': /* foreground queue run */ 1061 foregroundqueue = true; 1062 break; 1063 1064 case 'Q': /* Limit by quarantine message */ 1065 if (optarg[1] != '\0') 1066 { 1067 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1068 new->queue_match = newstr(&optarg[1]); 1069 new->queue_negate = negate; 1070 new->queue_next = QueueLimitQuarantine; 1071 QueueLimitQuarantine = new; 1072 } 1073 QueueMode = QM_QUARANTINE; 1074 break; 1075 1076 case 'L': /* act on lost items */ 1077 QueueMode = QM_LOST; 1078 break; 1079 1080 case 'p': /* Persistent queue */ 1081 queuepersistent = true; 1082 if (QueueIntvl == 0) 1083 QueueIntvl = 1; 1084 if (optarg[1] == '\0') 1085 break; 1086 ++optarg; 1087 /* FALLTHROUGH */ 1088 1089 default: 1090 i = Errors; 1091 QueueIntvl = convtime(optarg, 'm'); 1092 if (QueueIntvl < 0) 1093 { 1094 usrerr("Invalid -q value"); 1095 ExitStat = EX_USAGE; 1096 } 1097 1098 /* check for bad conversion */ 1099 if (i < Errors) 1100 ExitStat = EX_USAGE; 1101 break; 1102 } 1103 break; 1104 1105 case 'R': /* DSN RET: what to return */ 1106 CHECK_AGAINST_OPMODE(j); 1107 if (bitset(EF_RET_PARAM, BlankEnvelope.e_flags)) 1108 { 1109 usrerr("Duplicate -R flag"); 1110 ExitStat = EX_USAGE; 1111 break; 1112 } 1113 BlankEnvelope.e_flags |= EF_RET_PARAM; 1114 if (sm_strcasecmp(optarg, "hdrs") == 0) 1115 BlankEnvelope.e_flags |= EF_NO_BODY_RETN; 1116 else if (sm_strcasecmp(optarg, "full") != 0) 1117 { 1118 usrerr("Invalid -R value"); 1119 ExitStat = EX_USAGE; 1120 } 1121 macdefine(&BlankEnvelope.e_macro, A_TEMP, 1122 macid("{dsn_ret}"), optarg); 1123 break; 1124 1125 case 't': /* read recipients from message */ 1126 CHECK_AGAINST_OPMODE(j); 1127 GrabTo = true; 1128 break; 1129 1130 case 'V': /* DSN ENVID: set "original" envelope id */ 1131 CHECK_AGAINST_OPMODE(j); 1132 if (!xtextok(optarg)) 1133 { 1134 usrerr("Invalid syntax in -V flag"); 1135 ExitStat = EX_USAGE; 1136 } 1137 else 1138 { 1139 BlankEnvelope.e_envid = newstr(optarg); 1140 macdefine(&BlankEnvelope.e_macro, A_TEMP, 1141 macid("{dsn_envid}"), optarg); 1142 } 1143 break; 1144 1145 case 'X': /* traffic log file */ 1146 dp = drop_privileges(true); 1147 setstat(dp); 1148 if (stat(optarg, &traf_st) == 0 && 1149 S_ISFIFO(traf_st.st_mode)) 1150 TrafficLogFile = sm_io_open(SmFtStdio, 1151 SM_TIME_DEFAULT, 1152 optarg, 1153 SM_IO_WRONLY, NULL); 1154 else 1155 TrafficLogFile = sm_io_open(SmFtStdio, 1156 SM_TIME_DEFAULT, 1157 optarg, 1158 SM_IO_APPEND, NULL); 1159 if (TrafficLogFile == NULL) 1160 { 1161 syserr("cannot open %s", optarg); 1162 ExitStat = EX_CANTCREAT; 1163 break; 1164 } 1165 (void) sm_io_setvbuf(TrafficLogFile, SM_TIME_DEFAULT, 1166 NULL, SM_IO_LBF, 0); 1167 break; 1168 1169 /* compatibility flags */ 1170 case 'c': /* connect to non-local mailers */ 1171 case 'i': /* don't let dot stop me */ 1172 case 'm': /* send to me too */ 1173 case 'T': /* set timeout interval */ 1174 case 'v': /* give blow-by-blow description */ 1175 setoption(j, "T", false, true, &BlankEnvelope); 1176 break; 1177 1178 case 'e': /* error message disposition */ 1179 case 'M': /* define macro */ 1180 setoption(j, optarg, false, true, &BlankEnvelope); 1181 break; 1182 1183 case 's': /* save From lines in headers */ 1184 setoption('f', "T", false, true, &BlankEnvelope); 1185 break; 1186 1187#ifdef DBM 1188 case 'I': /* initialize alias DBM file */ 1189 set_op_mode(MD_INITALIAS); 1190 break; 1191#endif /* DBM */ 1192 1193#if defined(__osf__) || defined(_AIX3) 1194 case 'x': /* random flag that OSF/1 & AIX mailx passes */ 1195 break; 1196#endif /* defined(__osf__) || defined(_AIX3) */ 1197#if defined(sony_news) 1198 case 'E': 1199 case 'J': /* ignore flags for Japanese code conversion 1200 implemented on Sony NEWS */ 1201 break; 1202#endif /* defined(sony_news) */ 1203 1204 default: 1205 finis(true, true, EX_USAGE); 1206 /* NOTREACHED */ 1207 break; 1208 } 1209 } 1210 1211 /* if we've had errors so far, exit now */ 1212 if ((ExitStat != EX_OK && OpMode != MD_TEST && OpMode != MD_CHECKCONFIG) || 1213 ExitStat == EX_OSERR) 1214 { 1215 finis(false, true, ExitStat); 1216 /* NOTREACHED */ 1217 } 1218 1219 if (bitset(SUBMIT_MTA, SubmitMode)) 1220 { 1221 /* If set daemon_flags on command line, don't reset it */ 1222 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL) 1223 macdefine(&BlankEnvelope.e_macro, A_PERM, 1224 macid("{daemon_flags}"), "CC f"); 1225 } 1226 else if (OpMode == MD_DELIVER || OpMode == MD_SMTP) 1227 { 1228 SubmitMode = SUBMIT_MSA; 1229 1230 /* If set daemon_flags on command line, don't reset it */ 1231 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL) 1232 macdefine(&BlankEnvelope.e_macro, A_PERM, 1233 macid("{daemon_flags}"), "c u"); 1234 } 1235 1236 /* 1237 ** Do basic initialization. 1238 ** Read system control file. 1239 ** Extract special fields for local use. 1240 */ 1241 1242#if XDEBUG 1243 checkfd012("before readcf"); 1244#endif /* XDEBUG */ 1245 vendor_pre_defaults(&BlankEnvelope); 1246 1247 readcf(getcfname(OpMode, SubmitMode, cftype, conffile), 1248 safecf, &BlankEnvelope); 1249#if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) 1250 ConfigFileRead = true; 1251#endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */ 1252 vendor_post_defaults(&BlankEnvelope); 1253 1254 /* now we can complain about missing fds */ 1255 if (MissingFds != 0 && LogLevel > 8) 1256 { 1257 char mbuf[MAXLINE]; 1258 1259 mbuf[0] = '\0'; 1260 if (bitset(1 << STDIN_FILENO, MissingFds)) 1261 (void) sm_strlcat(mbuf, ", stdin", sizeof(mbuf)); 1262 if (bitset(1 << STDOUT_FILENO, MissingFds)) 1263 (void) sm_strlcat(mbuf, ", stdout", sizeof(mbuf)); 1264 if (bitset(1 << STDERR_FILENO, MissingFds)) 1265 (void) sm_strlcat(mbuf, ", stderr", sizeof(mbuf)); 1266 1267 /* Notice: fill_errno is from high above: fill_fd() */ 1268 sm_syslog(LOG_WARNING, NOQID, 1269 "File descriptors missing on startup: %s; %s", 1270 &mbuf[2], sm_errstring(fill_errno)); 1271 } 1272 1273 /* Remove the ability for a normal user to send signals */ 1274 if (RealUid != 0 && RealUid != geteuid()) 1275 { 1276 uid_t new_uid = geteuid(); 1277 1278#if HASSETREUID 1279 /* 1280 ** Since we can differentiate between uid and euid, 1281 ** make the uid a different user so the real user 1282 ** can't send signals. However, it doesn't need to be 1283 ** root (euid has root). 1284 */ 1285 1286 if (new_uid == 0) 1287 new_uid = DefUid; 1288 if (tTd(47, 5)) 1289 sm_dprintf("Changing real uid to %d\n", (int) new_uid); 1290 if (setreuid(new_uid, geteuid()) < 0) 1291 { 1292 syserr("main: setreuid(%d, %d) failed", 1293 (int) new_uid, (int) geteuid()); 1294 finis(false, true, EX_OSERR); 1295 /* NOTREACHED */ 1296 } 1297 if (tTd(47, 10)) 1298 sm_dprintf("Now running as e/ruid %d:%d\n", 1299 (int) geteuid(), (int) getuid()); 1300#else /* HASSETREUID */ 1301 /* 1302 ** Have to change both effective and real so need to 1303 ** change them both to effective to keep privs. 1304 */ 1305 1306 if (tTd(47, 5)) 1307 sm_dprintf("Changing uid to %d\n", (int) new_uid); 1308 if (setuid(new_uid) < 0) 1309 { 1310 syserr("main: setuid(%d) failed", (int) new_uid); 1311 finis(false, true, EX_OSERR); 1312 /* NOTREACHED */ 1313 } 1314 if (tTd(47, 10)) 1315 sm_dprintf("Now running as e/ruid %d:%d\n", 1316 (int) geteuid(), (int) getuid()); 1317#endif /* HASSETREUID */ 1318 } 1319 1320#if NAMED_BIND 1321 if (FallbackMX != NULL) 1322 (void) getfallbackmxrr(FallbackMX); 1323#endif /* NAMED_BIND */ 1324 1325 if (SuperSafe == SAFE_INTERACTIVE && !SM_IS_INTERACTIVE(CurEnv->e_sendmode)) 1326 { 1327 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1328 "WARNING: SuperSafe=interactive should only be used with\n DeliveryMode=interactive\n"); 1329 } 1330 1331 if (UseMSP && (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON)) 1332 { 1333 usrerr("Mail submission program cannot be used as daemon"); 1334 finis(false, true, EX_USAGE); 1335 } 1336 1337 if (OpMode == MD_DELIVER || OpMode == MD_SMTP || 1338 OpMode == MD_QUEUERUN || OpMode == MD_ARPAFTP || 1339 OpMode == MD_DAEMON || OpMode == MD_FGDAEMON) 1340 makeworkgroups(); 1341 1342 /* set up the basic signal handlers */ 1343 if (sm_signal(SIGINT, SIG_IGN) != SIG_IGN) 1344 (void) sm_signal(SIGINT, intsig); 1345 (void) sm_signal(SIGTERM, intsig); 1346 1347 /* Enforce use of local time (null string overrides this) */ 1348 if (TimeZoneSpec == NULL) 1349 unsetenv("TZ"); 1350 else if (TimeZoneSpec[0] != '\0') 1351 sm_setuserenv("TZ", TimeZoneSpec); 1352 else 1353 sm_setuserenv("TZ", NULL); 1354 tzset(); 1355 1356 /* initialize mailbox database */ 1357 i = sm_mbdb_initialize(Mbdb); 1358 if (i != EX_OK) 1359 { 1360 usrerr("Can't initialize mailbox database \"%s\": %s", 1361 Mbdb, sm_strexit(i)); 1362 ExitStat = i; 1363 } 1364 1365 /* avoid denial-of-service attacks */ 1366 resetlimits(); 1367 1368 if (OpMode == MD_TEST) 1369 { 1370 /* can't be done after readcf if RunAs* is used */ 1371 dp = drop_privileges(true); 1372 if (dp != EX_OK) 1373 { 1374 finis(false, true, dp); 1375 /* NOTREACHED */ 1376 } 1377 } 1378 else if (OpMode != MD_DAEMON && OpMode != MD_FGDAEMON) 1379 { 1380 /* drop privileges -- daemon mode done after socket/bind */ 1381 dp = drop_privileges(false); 1382 setstat(dp); 1383 if (dp == EX_OK && UseMSP && (geteuid() == 0 || getuid() == 0)) 1384 { 1385 usrerr("Mail submission program must have RunAsUser set to non root user"); 1386 finis(false, true, EX_CONFIG); 1387 /* NOTREACHED */ 1388 } 1389 } 1390 1391#if NAMED_BIND 1392 _res.retry = TimeOuts.res_retry[RES_TO_DEFAULT]; 1393 _res.retrans = TimeOuts.res_retrans[RES_TO_DEFAULT]; 1394#endif /* NAMED_BIND */ 1395 1396 /* 1397 ** Find our real host name for future logging. 1398 */ 1399 1400 authinfo = getauthinfo(STDIN_FILENO, &forged); 1401 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 1402 1403 /* suppress error printing if errors mailed back or whatever */ 1404 if (BlankEnvelope.e_errormode != EM_PRINT) 1405 HoldErrs = true; 1406 1407 /* set up the $=m class now, after .cf has a chance to redefine $m */ 1408 expand("\201m", jbuf, sizeof(jbuf), &BlankEnvelope); 1409 if (jbuf[0] != '\0') 1410 setclass('m', jbuf); 1411 1412 /* probe interfaces and locate any additional names */ 1413 if (DontProbeInterfaces != DPI_PROBENONE) 1414 load_if_names(); 1415 1416 if (tTd(0, 10)) 1417 { 1418 char pidpath[MAXPATHLEN]; 1419 1420 /* Now we know which .cf file we use */ 1421 sm_dprintf(" Conf file:\t%s (selected)\n", 1422 getcfname(OpMode, SubmitMode, cftype, conffile)); 1423 expand(PidFile, pidpath, sizeof(pidpath), &BlankEnvelope); 1424 sm_dprintf(" Pid file:\t%s (selected)\n", pidpath); 1425 } 1426 1427 if (tTd(0, 1)) 1428 { 1429 sm_dprintf("\n============ SYSTEM IDENTITY (after readcf) ============"); 1430 sm_dprintf("\n (short domain name) $w = "); 1431 xputs(sm_debug_file(), macvalue('w', &BlankEnvelope)); 1432 sm_dprintf("\n (canonical domain name) $j = "); 1433 xputs(sm_debug_file(), macvalue('j', &BlankEnvelope)); 1434 sm_dprintf("\n (subdomain name) $m = "); 1435 xputs(sm_debug_file(), macvalue('m', &BlankEnvelope)); 1436 sm_dprintf("\n (node name) $k = "); 1437 xputs(sm_debug_file(), macvalue('k', &BlankEnvelope)); 1438 sm_dprintf("\n========================================================\n\n"); 1439 } 1440 1441 /* 1442 ** Do more command line checking -- these are things that 1443 ** have to modify the results of reading the config file. 1444 */ 1445 1446 /* process authorization warnings from command line */ 1447 if (warn_C_flag) 1448 auth_warning(&BlankEnvelope, "Processed by %s with -C %s", 1449 RealUserName, conffile); 1450 if (Warn_Q_option && !wordinclass(RealUserName, 't')) 1451 auth_warning(&BlankEnvelope, "Processed from queue %s", 1452 QueueDir); 1453 if (sysloglabel != NULL && !wordinclass(RealUserName, 't') && 1454 RealUid != 0 && RealUid != TrustedUid && LogLevel > 1) 1455 sm_syslog(LOG_WARNING, NOQID, "user %d changed syslog label", 1456 (int) RealUid); 1457 1458 /* check body type for legality */ 1459 i = check_bodytype(BlankEnvelope.e_bodytype); 1460 if (i == BODYTYPE_ILLEGAL) 1461 { 1462 usrerr("Illegal body type %s", BlankEnvelope.e_bodytype); 1463 BlankEnvelope.e_bodytype = NULL; 1464 } 1465 else if (i != BODYTYPE_NONE) 1466 SevenBitInput = (i == BODYTYPE_7BIT); 1467 1468 /* tweak default DSN notifications */ 1469 if (DefaultNotify == 0) 1470 DefaultNotify = QPINGONFAILURE|QPINGONDELAY; 1471 1472 /* check for sane configuration level */ 1473 if (ConfigLevel > MAXCONFIGLEVEL) 1474 { 1475 syserr("Warning: .cf version level (%d) exceeds sendmail version %s functionality (%d)", 1476 ConfigLevel, Version, MAXCONFIGLEVEL); 1477 } 1478 1479 /* need MCI cache to have persistence */ 1480 if (HostStatDir != NULL && MaxMciCache == 0) 1481 { 1482 HostStatDir = NULL; 1483 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1484 "Warning: HostStatusDirectory disabled with ConnectionCacheSize = 0\n"); 1485 } 1486 1487 /* need HostStatusDir in order to have SingleThreadDelivery */ 1488 if (SingleThreadDelivery && HostStatDir == NULL) 1489 { 1490 SingleThreadDelivery = false; 1491 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1492 "Warning: HostStatusDirectory required for SingleThreadDelivery\n"); 1493 } 1494 1495#if _FFR_MEMSTAT 1496 j = sm_memstat_open(); 1497 if (j < 0 && (RefuseLowMem > 0 || QueueLowMem > 0) && LogLevel > 4) 1498 { 1499 sm_syslog(LOG_WARNING, NOQID, 1500 "cannot get memory statistics, settings ignored, error=%d" 1501 , j); 1502 } 1503#endif /* _FFR_MEMSTAT */ 1504 1505 /* check for permissions */ 1506 if (RealUid != 0 && 1507 RealUid != TrustedUid) 1508 { 1509 char *action = NULL; 1510 1511 switch (OpMode) 1512 { 1513 case MD_QUEUERUN: 1514 if (quarantining != NULL) 1515 action = "quarantine jobs"; 1516 else 1517 { 1518 /* Normal users can do a single queue run */ 1519 if (QueueIntvl == 0) 1520 break; 1521 } 1522 1523 /* but not persistent queue runners */ 1524 if (action == NULL) 1525 action = "start a queue runner daemon"; 1526 /* FALLTHROUGH */ 1527 1528 case MD_PURGESTAT: 1529 if (action == NULL) 1530 action = "purge host status"; 1531 /* FALLTHROUGH */ 1532 1533 case MD_DAEMON: 1534 case MD_FGDAEMON: 1535 if (action == NULL) 1536 action = "run daemon"; 1537 1538 if (tTd(65, 1)) 1539 sm_dprintf("Deny user %d attempt to %s\n", 1540 (int) RealUid, action); 1541 1542 if (LogLevel > 1) 1543 sm_syslog(LOG_ALERT, NOQID, 1544 "user %d attempted to %s", 1545 (int) RealUid, action); 1546 HoldErrs = false; 1547 usrerr("Permission denied (real uid not trusted)"); 1548 finis(false, true, EX_USAGE); 1549 /* NOTREACHED */ 1550 break; 1551 1552 case MD_VERIFY: 1553 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags)) 1554 { 1555 /* 1556 ** If -bv and RestrictExpand, 1557 ** drop privs to prevent normal 1558 ** users from reading private 1559 ** aliases/forwards/:include:s 1560 */ 1561 1562 if (tTd(65, 1)) 1563 sm_dprintf("Drop privs for user %d attempt to expand (RestrictExpand)\n", 1564 (int) RealUid); 1565 1566 dp = drop_privileges(true); 1567 1568 /* Fake address safety */ 1569 if (tTd(65, 1)) 1570 sm_dprintf("Faking DontBlameSendmail=NonRootSafeAddr\n"); 1571 setbitn(DBS_NONROOTSAFEADDR, DontBlameSendmail); 1572 1573 if (dp != EX_OK) 1574 { 1575 if (tTd(65, 1)) 1576 sm_dprintf("Failed to drop privs for user %d attempt to expand, exiting\n", 1577 (int) RealUid); 1578 CurEnv->e_id = NULL; 1579 finis(true, true, dp); 1580 /* NOTREACHED */ 1581 } 1582 } 1583 break; 1584 1585 case MD_TEST: 1586 case MD_CHECKCONFIG: 1587 case MD_PRINT: 1588 case MD_PRINTNQE: 1589 case MD_FREEZE: 1590 case MD_HOSTSTAT: 1591 /* Nothing special to check */ 1592 break; 1593 1594 case MD_INITALIAS: 1595 if (!wordinclass(RealUserName, 't')) 1596 { 1597 if (tTd(65, 1)) 1598 sm_dprintf("Deny user %d attempt to rebuild the alias map\n", 1599 (int) RealUid); 1600 if (LogLevel > 1) 1601 sm_syslog(LOG_ALERT, NOQID, 1602 "user %d attempted to rebuild the alias map", 1603 (int) RealUid); 1604 HoldErrs = false; 1605 usrerr("Permission denied (real uid not trusted)"); 1606 finis(false, true, EX_USAGE); 1607 /* NOTREACHED */ 1608 } 1609 if (UseMSP) 1610 { 1611 HoldErrs = false; 1612 usrerr("User %d cannot rebuild aliases in mail submission program", 1613 (int) RealUid); 1614 finis(false, true, EX_USAGE); 1615 /* NOTREACHED */ 1616 } 1617 /* FALLTHROUGH */ 1618 1619 default: 1620 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags) && 1621 Verbose != 0) 1622 { 1623 /* 1624 ** If -v and RestrictExpand, reset 1625 ** Verbose to prevent normal users 1626 ** from seeing the expansion of 1627 ** aliases/forwards/:include:s 1628 */ 1629 1630 if (tTd(65, 1)) 1631 sm_dprintf("Dropping verbosity for user %d (RestrictExpand)\n", 1632 (int) RealUid); 1633 Verbose = 0; 1634 } 1635 break; 1636 } 1637 } 1638 1639 if (MeToo) 1640 BlankEnvelope.e_flags |= EF_METOO; 1641 1642 switch (OpMode) 1643 { 1644 case MD_TEST: 1645 /* don't have persistent host status in test mode */ 1646 HostStatDir = NULL; 1647 /* FALLTHROUGH */ 1648 1649 case MD_CHECKCONFIG: 1650 if (Verbose == 0) 1651 Verbose = 2; 1652 BlankEnvelope.e_errormode = EM_PRINT; 1653 HoldErrs = false; 1654 break; 1655 1656 case MD_VERIFY: 1657 BlankEnvelope.e_errormode = EM_PRINT; 1658 HoldErrs = false; 1659 /* arrange to exit cleanly on hangup signal */ 1660 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL) 1661 (void) sm_signal(SIGHUP, intsig); 1662 if (geteuid() != 0) 1663 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1664 "Notice: -bv may give misleading output for non-privileged user\n"); 1665 break; 1666 1667 case MD_FGDAEMON: 1668 run_in_foreground = true; 1669 set_op_mode(MD_DAEMON); 1670 /* FALLTHROUGH */ 1671 1672 case MD_DAEMON: 1673 vendor_daemon_setup(&BlankEnvelope); 1674 1675 /* remove things that don't make sense in daemon mode */ 1676 FullName = NULL; 1677 GrabTo = false; 1678 1679 /* arrange to restart on hangup signal */ 1680 if (SaveArgv[0] == NULL || SaveArgv[0][0] != '/') 1681 sm_syslog(LOG_WARNING, NOQID, 1682 "daemon invoked without full pathname; kill -1 won't work"); 1683 break; 1684 1685 case MD_INITALIAS: 1686 Verbose = 2; 1687 BlankEnvelope.e_errormode = EM_PRINT; 1688 HoldErrs = false; 1689 /* FALLTHROUGH */ 1690 1691 default: 1692 /* arrange to exit cleanly on hangup signal */ 1693 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL) 1694 (void) sm_signal(SIGHUP, intsig); 1695 break; 1696 } 1697 1698 /* special considerations for FullName */ 1699 if (FullName != NULL) 1700 { 1701 char *full = NULL; 1702 1703 /* full names can't have newlines */ 1704 if (strchr(FullName, '\n') != NULL) 1705 { 1706 full = newstr(denlstring(FullName, true, true)); 1707 FullName = full; 1708 } 1709 1710 /* check for characters that may have to be quoted */ 1711 if (!rfc822_string(FullName)) 1712 { 1713 /* 1714 ** Quote a full name with special characters 1715 ** as a comment so crackaddr() doesn't destroy 1716 ** the name portion of the address. 1717 */ 1718 1719 FullName = addquotes(FullName, NULL); 1720 if (full != NULL) 1721 sm_free(full); /* XXX */ 1722 } 1723 } 1724 1725 /* do heuristic mode adjustment */ 1726 if (Verbose) 1727 { 1728 /* turn off noconnect option */ 1729 setoption('c', "F", true, false, &BlankEnvelope); 1730 1731 /* turn on interactive delivery */ 1732 setoption('d', "", true, false, &BlankEnvelope); 1733 } 1734 1735#ifdef VENDOR_CODE 1736 /* check for vendor mismatch */ 1737 if (VendorCode != VENDOR_CODE) 1738 { 1739 message("Warning: .cf file vendor code mismatch: sendmail expects vendor %s, .cf file vendor is %s", 1740 getvendor(VENDOR_CODE), getvendor(VendorCode)); 1741 } 1742#endif /* VENDOR_CODE */ 1743 1744 /* check for out of date configuration level */ 1745 if (ConfigLevel < MAXCONFIGLEVEL) 1746 { 1747 message("Warning: .cf file is out of date: sendmail %s supports version %d, .cf file is version %d", 1748 Version, MAXCONFIGLEVEL, ConfigLevel); 1749 } 1750 1751 if (ConfigLevel < 3) 1752 UseErrorsTo = true; 1753 1754 /* set options that were previous macros */ 1755 if (SmtpGreeting == NULL) 1756 { 1757 if (ConfigLevel < 7 && 1758 (p = macvalue('e', &BlankEnvelope)) != NULL) 1759 SmtpGreeting = newstr(p); 1760 else 1761 SmtpGreeting = "\201j Sendmail \201v ready at \201b"; 1762 } 1763 if (UnixFromLine == NULL) 1764 { 1765 if (ConfigLevel < 7 && 1766 (p = macvalue('l', &BlankEnvelope)) != NULL) 1767 UnixFromLine = newstr(p); 1768 else 1769 UnixFromLine = "From \201g \201d"; 1770 } 1771 SmtpError[0] = '\0'; 1772 1773 /* our name for SMTP codes */ 1774 expand("\201j", jbuf, sizeof(jbuf), &BlankEnvelope); 1775 if (jbuf[0] == '\0') 1776 PSTRSET(MyHostName, "localhost"); 1777 else 1778 PSTRSET(MyHostName, jbuf); 1779 if (strchr(MyHostName, '.') == NULL) 1780 message("WARNING: local host name (%s) is not qualified; see cf/README: WHO AM I?", 1781 MyHostName); 1782 1783 /* make certain that this name is part of the $=w class */ 1784 setclass('w', MyHostName); 1785 1786 /* fill in the structure of the *default* queue */ 1787 st = stab("mqueue", ST_QUEUE, ST_FIND); 1788 if (st == NULL) 1789 syserr("No default queue (mqueue) defined"); 1790 else 1791 set_def_queueval(st->s_quegrp, true); 1792 1793 /* the indices of built-in mailers */ 1794 st = stab("local", ST_MAILER, ST_FIND); 1795 if (st != NULL) 1796 LocalMailer = st->s_mailer; 1797 else if (OpMode != MD_TEST || !warn_C_flag) 1798 syserr("No local mailer defined"); 1799 1800 st = stab("prog", ST_MAILER, ST_FIND); 1801 if (st == NULL) 1802 syserr("No prog mailer defined"); 1803 else 1804 { 1805 ProgMailer = st->s_mailer; 1806 clrbitn(M_MUSER, ProgMailer->m_flags); 1807 } 1808 1809 st = stab("*file*", ST_MAILER, ST_FIND); 1810 if (st == NULL) 1811 syserr("No *file* mailer defined"); 1812 else 1813 { 1814 FileMailer = st->s_mailer; 1815 clrbitn(M_MUSER, FileMailer->m_flags); 1816 } 1817 1818 st = stab("*include*", ST_MAILER, ST_FIND); 1819 if (st == NULL) 1820 syserr("No *include* mailer defined"); 1821 else 1822 InclMailer = st->s_mailer; 1823 1824 if (ConfigLevel < 6) 1825 { 1826 /* heuristic tweaking of local mailer for back compat */ 1827 if (LocalMailer != NULL) 1828 { 1829 setbitn(M_ALIASABLE, LocalMailer->m_flags); 1830 setbitn(M_HASPWENT, LocalMailer->m_flags); 1831 setbitn(M_TRYRULESET5, LocalMailer->m_flags); 1832 setbitn(M_CHECKINCLUDE, LocalMailer->m_flags); 1833 setbitn(M_CHECKPROG, LocalMailer->m_flags); 1834 setbitn(M_CHECKFILE, LocalMailer->m_flags); 1835 setbitn(M_CHECKUDB, LocalMailer->m_flags); 1836 } 1837 if (ProgMailer != NULL) 1838 setbitn(M_RUNASRCPT, ProgMailer->m_flags); 1839 if (FileMailer != NULL) 1840 setbitn(M_RUNASRCPT, FileMailer->m_flags); 1841 } 1842 if (ConfigLevel < 7) 1843 { 1844 if (LocalMailer != NULL) 1845 setbitn(M_VRFY250, LocalMailer->m_flags); 1846 if (ProgMailer != NULL) 1847 setbitn(M_VRFY250, ProgMailer->m_flags); 1848 if (FileMailer != NULL) 1849 setbitn(M_VRFY250, FileMailer->m_flags); 1850 } 1851 1852 /* MIME Content-Types that cannot be transfer encoded */ 1853 setclass('n', "multipart/signed"); 1854 1855 /* MIME message/xxx subtypes that can be treated as messages */ 1856 setclass('s', "rfc822"); 1857 1858 /* MIME Content-Transfer-Encodings that can be encoded */ 1859 setclass('e', "7bit"); 1860 setclass('e', "8bit"); 1861 setclass('e', "binary"); 1862 1863#ifdef USE_B_CLASS 1864 /* MIME Content-Types that should be treated as binary */ 1865 setclass('b', "image"); 1866 setclass('b', "audio"); 1867 setclass('b', "video"); 1868 setclass('b', "application/octet-stream"); 1869#endif /* USE_B_CLASS */ 1870 1871 /* MIME headers which have fields to check for overflow */ 1872 setclass(macid("{checkMIMEFieldHeaders}"), "content-disposition"); 1873 setclass(macid("{checkMIMEFieldHeaders}"), "content-type"); 1874 1875 /* MIME headers to check for length overflow */ 1876 setclass(macid("{checkMIMETextHeaders}"), "content-description"); 1877 1878 /* MIME headers to check for overflow and rebalance */ 1879 setclass(macid("{checkMIMEHeaders}"), "content-disposition"); 1880 setclass(macid("{checkMIMEHeaders}"), "content-id"); 1881 setclass(macid("{checkMIMEHeaders}"), "content-transfer-encoding"); 1882 setclass(macid("{checkMIMEHeaders}"), "content-type"); 1883 setclass(macid("{checkMIMEHeaders}"), "mime-version"); 1884 1885 /* Macros to save in the queue file -- don't remove any */ 1886 setclass(macid("{persistentMacros}"), "r"); 1887 setclass(macid("{persistentMacros}"), "s"); 1888 setclass(macid("{persistentMacros}"), "_"); 1889 setclass(macid("{persistentMacros}"), "{if_addr}"); 1890 setclass(macid("{persistentMacros}"), "{daemon_flags}"); 1891 1892 /* operate in queue directory */ 1893 if (QueueDir == NULL || *QueueDir == '\0') 1894 { 1895 if (OpMode != MD_TEST) 1896 { 1897 syserr("QueueDirectory (Q) option must be set"); 1898 ExitStat = EX_CONFIG; 1899 } 1900 } 1901 else 1902 { 1903 if (OpMode != MD_TEST) 1904 setup_queues(OpMode == MD_DAEMON); 1905 } 1906 1907 /* check host status directory for validity */ 1908 if (HostStatDir != NULL && !path_is_dir(HostStatDir, false)) 1909 { 1910 /* cannot use this value */ 1911 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1912 "Warning: Cannot use HostStatusDirectory = %s: %s\n", 1913 HostStatDir, sm_errstring(errno)); 1914 HostStatDir = NULL; 1915 } 1916 1917 if (OpMode == MD_QUEUERUN && 1918 RealUid != 0 && bitset(PRIV_RESTRICTQRUN, PrivacyFlags)) 1919 { 1920 struct stat stbuf; 1921 1922 /* check to see if we own the queue directory */ 1923 if (stat(".", &stbuf) < 0) 1924 syserr("main: cannot stat %s", QueueDir); 1925 if (stbuf.st_uid != RealUid) 1926 { 1927 /* nope, really a botch */ 1928 HoldErrs = false; 1929 usrerr("You do not have permission to process the queue"); 1930 finis(false, true, EX_NOPERM); 1931 /* NOTREACHED */ 1932 } 1933 } 1934 1935#if MILTER 1936 /* sanity checks on milter filters */ 1937 if (OpMode == MD_DAEMON || OpMode == MD_SMTP) 1938 { 1939 milter_config(InputFilterList, InputFilters, MAXFILTERS); 1940 setup_daemon_milters(); 1941 } 1942#endif /* MILTER */ 1943 1944 /* Convert queuegroup string to qgrp number */ 1945 if (queuegroup != NULL) 1946 { 1947 qgrp = name2qid(queuegroup); 1948 if (qgrp == NOQGRP) 1949 { 1950 HoldErrs = false; 1951 usrerr("Queue group %s unknown", queuegroup); 1952 finis(false, true, ExitStat); 1953 /* NOTREACHED */ 1954 } 1955 } 1956 1957 /* if checking config or have had errors so far, exit now */ 1958 if (OpMode == MD_CHECKCONFIG || (ExitStat != EX_OK && OpMode != MD_TEST)) 1959 { 1960 finis(false, true, ExitStat); 1961 /* NOTREACHED */ 1962 } 1963 1964#if SASL 1965 /* sendmail specific SASL initialization */ 1966 sm_sasl_init(); 1967#endif /* SASL */ 1968 1969#if XDEBUG 1970 checkfd012("before main() initmaps"); 1971#endif /* XDEBUG */ 1972 1973 /* 1974 ** Do operation-mode-dependent initialization. 1975 */ 1976 1977 switch (OpMode) 1978 { 1979 case MD_PRINT: 1980 /* print the queue */ 1981 HoldErrs = false; 1982 (void) dropenvelope(&BlankEnvelope, true, false); 1983 (void) sm_signal(SIGPIPE, sigpipe); 1984 if (qgrp != NOQGRP) 1985 { 1986 int j; 1987 1988 /* Selecting a particular queue group to run */ 1989 for (j = 0; j < Queue[qgrp]->qg_numqueues; j++) 1990 { 1991 if (StopRequest) 1992 stop_sendmail(); 1993 (void) print_single_queue(qgrp, j); 1994 } 1995 finis(false, true, EX_OK); 1996 /* NOTREACHED */ 1997 } 1998 printqueue(); 1999 finis(false, true, EX_OK); 2000 /* NOTREACHED */ 2001 break; 2002 2003 case MD_PRINTNQE: 2004 /* print number of entries in queue */ 2005 (void) dropenvelope(&BlankEnvelope, true, false); 2006 (void) sm_signal(SIGPIPE, sigpipe); 2007 printnqe(smioout, NULL); 2008 finis(false, true, EX_OK); 2009 /* NOTREACHED */ 2010 break; 2011 2012 case MD_QUEUERUN: 2013 /* only handle quarantining here */ 2014 if (quarantining == NULL) 2015 break; 2016 2017 if (QueueMode != QM_QUARANTINE && 2018 QueueMode != QM_NORMAL) 2019 { 2020 HoldErrs = false; 2021 usrerr("Can not use -Q with -q%c", QueueMode); 2022 ExitStat = EX_USAGE; 2023 finis(false, true, ExitStat); 2024 /* NOTREACHED */ 2025 } 2026 quarantine_queue(quarantining, qgrp); 2027 finis(false, true, EX_OK); 2028 break; 2029 2030 case MD_HOSTSTAT: 2031 (void) sm_signal(SIGPIPE, sigpipe); 2032 (void) mci_traverse_persistent(mci_print_persistent, NULL); 2033 finis(false, true, EX_OK); 2034 /* NOTREACHED */ 2035 break; 2036 2037 case MD_PURGESTAT: 2038 (void) mci_traverse_persistent(mci_purge_persistent, NULL); 2039 finis(false, true, EX_OK); 2040 /* NOTREACHED */ 2041 break; 2042 2043 case MD_INITALIAS: 2044 /* initialize maps */ 2045 initmaps(); 2046 finis(false, true, ExitStat); 2047 /* NOTREACHED */ 2048 break; 2049 2050 case MD_SMTP: 2051 case MD_DAEMON: 2052 /* reset DSN parameters */ 2053 DefaultNotify = QPINGONFAILURE|QPINGONDELAY; 2054 macdefine(&BlankEnvelope.e_macro, A_PERM, 2055 macid("{dsn_notify}"), NULL); 2056 BlankEnvelope.e_envid = NULL; 2057 macdefine(&BlankEnvelope.e_macro, A_PERM, 2058 macid("{dsn_envid}"), NULL); 2059 BlankEnvelope.e_flags &= ~(EF_RET_PARAM|EF_NO_BODY_RETN); 2060 macdefine(&BlankEnvelope.e_macro, A_PERM, 2061 macid("{dsn_ret}"), NULL); 2062 2063 /* don't open maps for daemon -- done below in child */ 2064 break; 2065 } 2066 2067 if (tTd(0, 15)) 2068 { 2069 /* print configuration table (or at least part of it) */ 2070 if (tTd(0, 90)) 2071 printrules(); 2072 for (i = 0; i < MAXMAILERS; i++) 2073 { 2074 if (Mailer[i] != NULL) 2075 printmailer(sm_debug_file(), Mailer[i]); 2076 } 2077 } 2078 2079 /* 2080 ** Switch to the main envelope. 2081 */ 2082 2083 CurEnv = newenvelope(&MainEnvelope, &BlankEnvelope, 2084 sm_rpool_new_x(NULL)); 2085 MainEnvelope.e_flags = BlankEnvelope.e_flags; 2086 2087 /* 2088 ** If test mode, read addresses from stdin and process. 2089 */ 2090 2091 if (OpMode == MD_TEST) 2092 { 2093 if (isatty(sm_io_getinfo(smioin, SM_IO_WHAT_FD, NULL))) 2094 Verbose = 2; 2095 2096 if (Verbose) 2097 { 2098 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2099 "ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n"); 2100 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2101 "Enter <ruleset> <address>\n"); 2102 } 2103 macdefine(&(MainEnvelope.e_macro), A_PERM, 2104 macid("{addr_type}"), "e r"); 2105 for (;;) 2106 { 2107 SM_TRY 2108 { 2109 (void) sm_signal(SIGINT, intindebug); 2110 (void) sm_releasesignal(SIGINT); 2111 if (Verbose == 2) 2112 (void) sm_io_fprintf(smioout, 2113 SM_TIME_DEFAULT, 2114 "> "); 2115 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 2116 if (sm_io_fgets(smioin, SM_TIME_DEFAULT, buf, 2117 sizeof(buf)) < 0) 2118 testmodeline("/quit", &MainEnvelope); 2119 p = strchr(buf, '\n'); 2120 if (p != NULL) 2121 *p = '\0'; 2122 if (Verbose < 2) 2123 (void) sm_io_fprintf(smioout, 2124 SM_TIME_DEFAULT, 2125 "> %s\n", buf); 2126 testmodeline(buf, &MainEnvelope); 2127 } 2128 SM_EXCEPT(exc, "[!F]*") 2129 { 2130 /* 2131 ** 8.10 just prints \n on interrupt. 2132 ** I'm printing the exception here in case 2133 ** sendmail is extended to raise additional 2134 ** exceptions in this context. 2135 */ 2136 2137 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2138 "\n"); 2139 sm_exc_print(exc, smioout); 2140 } 2141 SM_END_TRY 2142 } 2143 } 2144 2145#if STARTTLS 2146 tls_ok = true; 2147 if (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER || 2148 OpMode == MD_ARPAFTP) 2149 { 2150 /* check whether STARTTLS is turned off for the client */ 2151 if (chkclientmodifiers(D_NOTLS)) 2152 tls_ok = false; 2153 } 2154 else if (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON || 2155 OpMode == MD_SMTP) 2156 { 2157 /* check whether STARTTLS is turned off */ 2158 if (chkdaemonmodifiers(D_NOTLS) && chkclientmodifiers(D_NOTLS)) 2159 tls_ok = false; 2160 } 2161 else /* other modes don't need STARTTLS */ 2162 tls_ok = false; 2163 2164 if (tls_ok) 2165 { 2166 /* basic TLS initialization */ 2167 tls_ok = init_tls_library(FipsMode); 2168 if (!tls_ok && FipsMode) 2169 { 2170 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2171 "ERROR: FIPSMode failed to initialize\n"); 2172 exit(EX_USAGE); 2173 } 2174 } 2175 2176 if (!tls_ok && (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER)) 2177 { 2178 /* disable TLS for client */ 2179 setclttls(false); 2180 } 2181#endif /* STARTTLS */ 2182 2183 /* 2184 ** If collecting stuff from the queue, go start doing that. 2185 */ 2186 2187 if (OpMode == MD_QUEUERUN && QueueIntvl == 0) 2188 { 2189 pid_t pid = -1; 2190 2191#if STARTTLS 2192 /* init TLS for client, ignore result for now */ 2193 (void) initclttls(tls_ok); 2194#endif /* STARTTLS */ 2195 2196 /* 2197 ** The parent process of the caller of runqueue() needs 2198 ** to stay around for a possible SIGTERM. The SIGTERM will 2199 ** tell this process that all of the queue runners children 2200 ** need to be sent SIGTERM as well. At the same time, we 2201 ** want to return control to the command line. So we do an 2202 ** extra fork(). 2203 */ 2204 2205 if (Verbose || foregroundqueue || (pid = fork()) <= 0) 2206 { 2207 /* 2208 ** If the fork() failed we should still try to do 2209 ** the queue run. If it succeeded then the child 2210 ** is going to start the run and wait for all 2211 ** of the children to finish. 2212 */ 2213 2214 if (pid == 0) 2215 { 2216 /* Reset global flags */ 2217 RestartRequest = NULL; 2218 ShutdownRequest = NULL; 2219 PendingSignal = 0; 2220 2221 /* disconnect from terminal */ 2222 disconnect(2, CurEnv); 2223 } 2224 2225 CurrentPid = getpid(); 2226 if (qgrp != NOQGRP) 2227 { 2228 int rwgflags = RWG_NONE; 2229 2230 /* 2231 ** To run a specific queue group mark it to 2232 ** be run, select the work group it's in and 2233 ** increment the work counter. 2234 */ 2235 2236 for (i = 0; i < NumQueue && Queue[i] != NULL; 2237 i++) 2238 Queue[i]->qg_nextrun = (time_t) -1; 2239 Queue[qgrp]->qg_nextrun = 0; 2240 if (Verbose) 2241 rwgflags |= RWG_VERBOSE; 2242 if (queuepersistent) 2243 rwgflags |= RWG_PERSISTENT; 2244 rwgflags |= RWG_FORCE; 2245 (void) run_work_group(Queue[qgrp]->qg_wgrp, 2246 rwgflags); 2247 } 2248 else 2249 (void) runqueue(false, Verbose, 2250 queuepersistent, true); 2251 2252 /* set the title to make it easier to find */ 2253 sm_setproctitle(true, CurEnv, "Queue control"); 2254 (void) sm_signal(SIGCHLD, SIG_DFL); 2255 while (CurChildren > 0) 2256 { 2257 int status; 2258 pid_t ret; 2259 2260 errno = 0; 2261 while ((ret = sm_wait(&status)) <= 0) 2262 { 2263 if (errno == ECHILD) 2264 { 2265 /* 2266 ** Oops... something got messed 2267 ** up really bad. Waiting for 2268 ** non-existent children 2269 ** shouldn't happen. Let's get 2270 ** out of here. 2271 */ 2272 2273 CurChildren = 0; 2274 break; 2275 } 2276 continue; 2277 } 2278 2279 /* something is really really wrong */ 2280 if (errno == ECHILD) 2281 { 2282 sm_syslog(LOG_ERR, NOQID, 2283 "queue control process: lost all children: wait returned ECHILD"); 2284 break; 2285 } 2286 2287 /* Only drop when a child gives status */ 2288 if (WIFSTOPPED(status)) 2289 continue; 2290 2291 proc_list_drop(ret, status, NULL); 2292 } 2293 } 2294 finis(true, true, ExitStat); 2295 /* NOTREACHED */ 2296 } 2297 2298# if SASL 2299 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2300 { 2301 /* check whether AUTH is turned off for the server */ 2302 if (!chkdaemonmodifiers(D_NOAUTH) && 2303 (i = sasl_server_init(srvcallbacks, "Sendmail")) != SASL_OK) 2304 syserr("!sasl_server_init failed! [%s]", 2305 sasl_errstring(i, NULL, NULL)); 2306 } 2307# endif /* SASL */ 2308 2309 if (OpMode == MD_SMTP) 2310 { 2311 proc_list_add(CurrentPid, "Sendmail SMTP Agent", 2312 PROC_DAEMON, 0, -1, NULL); 2313 2314 /* clean up background delivery children */ 2315 (void) sm_signal(SIGCHLD, reapchild); 2316 } 2317 2318 /* 2319 ** If a daemon, wait for a request. 2320 ** getrequests will always return in a child. 2321 ** If we should also be processing the queue, start 2322 ** doing it in background. 2323 ** We check for any errors that might have happened 2324 ** during startup. 2325 */ 2326 2327 if (OpMode == MD_DAEMON || QueueIntvl > 0) 2328 { 2329 char dtype[200]; 2330 2331 /* avoid cleanup in finis(), DaemonPid will be set below */ 2332 DaemonPid = 0; 2333 if (!run_in_foreground && !tTd(99, 100)) 2334 { 2335 /* put us in background */ 2336 i = fork(); 2337 if (i < 0) 2338 syserr("daemon: cannot fork"); 2339 if (i != 0) 2340 { 2341 finis(false, true, EX_OK); 2342 /* NOTREACHED */ 2343 } 2344 2345 /* 2346 ** Initialize exception stack and default exception 2347 ** handler for child process. 2348 */ 2349 2350 /* Reset global flags */ 2351 RestartRequest = NULL; 2352 RestartWorkGroup = false; 2353 ShutdownRequest = NULL; 2354 PendingSignal = 0; 2355 CurrentPid = getpid(); 2356 2357 sm_exc_newthread(fatal_error); 2358 2359 /* disconnect from our controlling tty */ 2360 disconnect(2, &MainEnvelope); 2361 } 2362 2363 dtype[0] = '\0'; 2364 if (OpMode == MD_DAEMON) 2365 { 2366 (void) sm_strlcat(dtype, "+SMTP", sizeof(dtype)); 2367 DaemonPid = CurrentPid; 2368 } 2369 if (QueueIntvl > 0) 2370 { 2371 (void) sm_strlcat2(dtype, 2372 queuepersistent 2373 ? "+persistent-queueing@" 2374 : "+queueing@", 2375 pintvl(QueueIntvl, true), 2376 sizeof(dtype)); 2377 } 2378 if (tTd(0, 1)) 2379 (void) sm_strlcat(dtype, "+debugging", sizeof(dtype)); 2380 2381 sm_syslog(LOG_INFO, NOQID, 2382 "starting daemon (%s): %s", Version, dtype + 1); 2383#if XLA 2384 xla_create_file(); 2385#endif /* XLA */ 2386 2387 /* save daemon type in a macro for possible PidFile use */ 2388 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2389 macid("{daemon_info}"), dtype + 1); 2390 2391 /* save queue interval in a macro for possible PidFile use */ 2392 macdefine(&MainEnvelope.e_macro, A_TEMP, 2393 macid("{queue_interval}"), pintvl(QueueIntvl, true)); 2394 2395 /* workaround: can't seem to release the signal in the parent */ 2396 (void) sm_signal(SIGHUP, sighup); 2397 (void) sm_releasesignal(SIGHUP); 2398 (void) sm_signal(SIGTERM, sigterm); 2399 2400 if (QueueIntvl > 0) 2401 { 2402#if _FFR_RUNPQG 2403 if (qgrp != NOQGRP) 2404 { 2405 int rwgflags = RWG_NONE; 2406 2407 /* 2408 ** To run a specific queue group mark it to 2409 ** be run, select the work group it's in and 2410 ** increment the work counter. 2411 */ 2412 2413 for (i = 0; i < NumQueue && Queue[i] != NULL; 2414 i++) 2415 Queue[i]->qg_nextrun = (time_t) -1; 2416 Queue[qgrp]->qg_nextrun = 0; 2417 if (Verbose) 2418 rwgflags |= RWG_VERBOSE; 2419 if (queuepersistent) 2420 rwgflags |= RWG_PERSISTENT; 2421 rwgflags |= RWG_FORCE; 2422 (void) run_work_group(Queue[qgrp]->qg_wgrp, 2423 rwgflags); 2424 } 2425 else 2426#endif /* _FFR_RUNPQG */ 2427 (void) runqueue(true, false, queuepersistent, 2428 true); 2429 2430 /* 2431 ** If queuepersistent but not in daemon mode then 2432 ** we're going to do the queue runner monitoring here. 2433 ** If in daemon mode then the monitoring will happen 2434 ** elsewhere. 2435 */ 2436 2437 if (OpMode != MD_DAEMON && queuepersistent) 2438 { 2439 /* 2440 ** Write the pid to file 2441 ** XXX Overwrites sendmail.pid 2442 */ 2443 2444 log_sendmail_pid(&MainEnvelope); 2445 2446 /* set the title to make it easier to find */ 2447 sm_setproctitle(true, CurEnv, "Queue control"); 2448 (void) sm_signal(SIGCHLD, SIG_DFL); 2449 while (CurChildren > 0) 2450 { 2451 int status; 2452 pid_t ret; 2453 int group; 2454 2455 CHECK_RESTART; 2456 errno = 0; 2457 while ((ret = sm_wait(&status)) <= 0) 2458 { 2459 /* 2460 ** Waiting for non-existent 2461 ** children shouldn't happen. 2462 ** Let's get out of here if 2463 ** it occurs. 2464 */ 2465 2466 if (errno == ECHILD) 2467 { 2468 CurChildren = 0; 2469 break; 2470 } 2471 continue; 2472 } 2473 2474 /* something is really really wrong */ 2475 if (errno == ECHILD) 2476 { 2477 sm_syslog(LOG_ERR, NOQID, 2478 "persistent queue runner control process: lost all children: wait returned ECHILD"); 2479 break; 2480 } 2481 2482 if (WIFSTOPPED(status)) 2483 continue; 2484 2485 /* Probe only on a child status */ 2486 proc_list_drop(ret, status, &group); 2487 2488 if (WIFSIGNALED(status)) 2489 { 2490 if (WCOREDUMP(status)) 2491 { 2492 sm_syslog(LOG_ERR, NOQID, 2493 "persistent queue runner=%d core dumped, signal=%d", 2494 group, WTERMSIG(status)); 2495 2496 /* don't restart this */ 2497 mark_work_group_restart( 2498 group, -1); 2499 continue; 2500 } 2501 2502 sm_syslog(LOG_ERR, NOQID, 2503 "persistent queue runner=%d died, pid=%ld, signal=%d", 2504 group, (long) ret, 2505 WTERMSIG(status)); 2506 } 2507 2508 /* 2509 ** When debugging active, don't 2510 ** restart the persistent queues. 2511 ** But do log this as info. 2512 */ 2513 2514 if (sm_debug_active(&DebugNoPRestart, 2515 1)) 2516 { 2517 sm_syslog(LOG_DEBUG, NOQID, 2518 "persistent queue runner=%d, exited", 2519 group); 2520 mark_work_group_restart(group, 2521 -1); 2522 } 2523 CHECK_RESTART; 2524 } 2525 finis(true, true, ExitStat); 2526 /* NOTREACHED */ 2527 } 2528 2529 if (OpMode != MD_DAEMON) 2530 { 2531 char qtype[200]; 2532 2533 /* 2534 ** Write the pid to file 2535 ** XXX Overwrites sendmail.pid 2536 */ 2537 2538 log_sendmail_pid(&MainEnvelope); 2539 2540 /* set the title to make it easier to find */ 2541 qtype[0] = '\0'; 2542 (void) sm_strlcpyn(qtype, sizeof(qtype), 4, 2543 "Queue runner@", 2544 pintvl(QueueIntvl, true), 2545 " for ", 2546 QueueDir); 2547 sm_setproctitle(true, CurEnv, qtype); 2548 for (;;) 2549 { 2550 (void) pause(); 2551 2552 CHECK_RESTART; 2553 2554 if (doqueuerun()) 2555 (void) runqueue(true, false, 2556 false, false); 2557 } 2558 } 2559 } 2560 (void) dropenvelope(&MainEnvelope, true, false); 2561 2562#if STARTTLS 2563 /* init TLS for server, ignore result for now */ 2564 (void) initsrvtls(tls_ok); 2565#endif /* STARTTLS */ 2566 2567 nextreq: 2568 p_flags = getrequests(&MainEnvelope); 2569 2570 /* drop privileges */ 2571 (void) drop_privileges(false); 2572 2573 /* 2574 ** Get authentication data 2575 ** Set _ macro in BlankEnvelope before calling newenvelope(). 2576 */ 2577 2578#if _FFR_XCNCT 2579 if (bitnset(D_XCNCT, *p_flags) || bitnset(D_XCNCT_M, *p_flags)) 2580 { 2581 /* copied from getauthinfo() */ 2582 if (RealHostName == NULL) 2583 { 2584 RealHostName = newstr(hostnamebyanyaddr(&RealHostAddr)); 2585 if (strlen(RealHostName) > MAXNAME) 2586 RealHostName[MAXNAME] = '\0'; /* XXX - 1 ? */ 2587 } 2588 snprintf(buf, sizeof(buf), "%s [%s]", 2589 RealHostName, anynet_ntoa(&RealHostAddr)); 2590 2591 forged = bitnset(D_XCNCT_M, *p_flags); 2592 if (forged) 2593 { 2594 (void) sm_strlcat(buf, " (may be forged)", 2595 sizeof(buf)); 2596 macdefine(&BlankEnvelope.e_macro, A_PERM, 2597 macid("{client_resolve}"), "FORGED"); 2598 } 2599 2600 /* HACK! variable used only two times right below */ 2601 authinfo = buf; 2602 if (tTd(75, 9)) 2603 sm_syslog(LOG_INFO, NOQID, 2604 "main: where=not_calling_getauthinfo, RealHostAddr=%s", 2605 anynet_ntoa(&RealHostAddr)); 2606 } 2607 else 2608 /* WARNING: "non-braced" else */ 2609#endif /* _FFR_XCNCT */ 2610 authinfo = getauthinfo(sm_io_getinfo(InChannel, SM_IO_WHAT_FD, 2611 NULL), &forged); 2612 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 2613 if (tTd(75, 9)) 2614 sm_syslog(LOG_INFO, NOQID, 2615 "main: where=after_getauthinfo, RealHostAddr=%s", 2616 anynet_ntoa(&RealHostAddr)); 2617 2618 /* at this point we are in a child: reset state */ 2619 sm_rpool_free(MainEnvelope.e_rpool); 2620 (void) newenvelope(&MainEnvelope, &MainEnvelope, 2621 sm_rpool_new_x(NULL)); 2622 } 2623 2624 if (LogLevel > 9) 2625 { 2626 /* log connection information */ 2627 sm_syslog(LOG_INFO, NULL, "connect from %s", authinfo); 2628 } 2629 2630 /* 2631 ** If running SMTP protocol, start collecting and executing 2632 ** commands. This will never return. 2633 */ 2634 2635 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2636 { 2637 char pbuf[20]; 2638 2639 /* 2640 ** Save some macros for check_* rulesets. 2641 */ 2642 2643 if (forged) 2644 { 2645 char ipbuf[103]; 2646 2647 (void) sm_snprintf(ipbuf, sizeof(ipbuf), "[%.100s]", 2648 anynet_ntoa(&RealHostAddr)); 2649 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2650 macid("{client_name}"), ipbuf); 2651 } 2652 else 2653 macdefine(&BlankEnvelope.e_macro, A_PERM, 2654 macid("{client_name}"), RealHostName); 2655 macdefine(&BlankEnvelope.e_macro, A_PERM, 2656 macid("{client_ptr}"), RealHostName); 2657 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2658 macid("{client_addr}"), anynet_ntoa(&RealHostAddr)); 2659 sm_getla(); 2660 2661 switch (RealHostAddr.sa.sa_family) 2662 { 2663#if NETINET 2664 case AF_INET: 2665 (void) sm_snprintf(pbuf, sizeof(pbuf), "%d", 2666 ntohs(RealHostAddr.sin.sin_port)); 2667 break; 2668#endif /* NETINET */ 2669#if NETINET6 2670 case AF_INET6: 2671 (void) sm_snprintf(pbuf, sizeof(pbuf), "%d", 2672 ntohs(RealHostAddr.sin6.sin6_port)); 2673 break; 2674#endif /* NETINET6 */ 2675 default: 2676 (void) sm_snprintf(pbuf, sizeof(pbuf), "0"); 2677 break; 2678 } 2679 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2680 macid("{client_port}"), pbuf); 2681 2682 if (OpMode == MD_DAEMON) 2683 { 2684 ENVELOPE *saved_env; 2685 2686 /* validate the connection */ 2687 HoldErrs = true; 2688 saved_env = CurEnv; 2689 CurEnv = &BlankEnvelope; 2690 nullserver = validate_connection(&RealHostAddr, 2691 macvalue(macid("{client_name}"), 2692 &BlankEnvelope), 2693 &BlankEnvelope); 2694 if (bitset(EF_DISCARD, BlankEnvelope.e_flags)) 2695 MainEnvelope.e_flags |= EF_DISCARD; 2696 CurEnv = saved_env; 2697 HoldErrs = false; 2698 } 2699 else if (p_flags == NULL) 2700 { 2701 p_flags = (BITMAP256 *) xalloc(sizeof(*p_flags)); 2702 clrbitmap(p_flags); 2703 } 2704#if STARTTLS 2705 if (OpMode == MD_SMTP) 2706 (void) initsrvtls(tls_ok); 2707#endif /* STARTTLS */ 2708 2709 /* turn off profiling */ 2710 SM_PROF(1); 2711 smtp(nullserver, *p_flags, &MainEnvelope); 2712 2713 if (tTd(93, 100)) 2714 { 2715 /* turn off profiling */ 2716 SM_PROF(0); 2717 if (OpMode == MD_DAEMON) 2718 goto nextreq; 2719 } 2720 } 2721 2722 sm_rpool_free(MainEnvelope.e_rpool); 2723 clearenvelope(&MainEnvelope, false, sm_rpool_new_x(NULL)); 2724 if (OpMode == MD_VERIFY) 2725 { 2726 set_delivery_mode(SM_VERIFY, &MainEnvelope); 2727 PostMasterCopy = NULL; 2728 } 2729 else 2730 { 2731 /* interactive -- all errors are global */ 2732 MainEnvelope.e_flags |= EF_GLOBALERRS|EF_LOGSENDER; 2733 } 2734 2735 /* 2736 ** Do basic system initialization and set the sender 2737 */ 2738 2739 initsys(&MainEnvelope); 2740 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{ntries}"), "0"); 2741 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{nrcpts}"), "0"); 2742 setsender(from, &MainEnvelope, NULL, '\0', false); 2743 if (warn_f_flag != '\0' && !wordinclass(RealUserName, 't') && 2744 (!bitnset(M_LOCALMAILER, MainEnvelope.e_from.q_mailer->m_flags) || 2745 strcmp(MainEnvelope.e_from.q_user, RealUserName) != 0)) 2746 { 2747 auth_warning(&MainEnvelope, "%s set sender to %s using -%c", 2748 RealUserName, from, warn_f_flag); 2749#if SASL 2750 auth = false; 2751#endif /* SASL */ 2752 } 2753 if (auth) 2754 { 2755 char *fv; 2756 2757 /* set the initial sender for AUTH= to $f@$j */ 2758 fv = macvalue('f', &MainEnvelope); 2759 if (fv == NULL || *fv == '\0') 2760 MainEnvelope.e_auth_param = NULL; 2761 else 2762 { 2763 if (strchr(fv, '@') == NULL) 2764 { 2765 i = strlen(fv) + strlen(macvalue('j', 2766 &MainEnvelope)) + 2; 2767 p = sm_malloc_x(i); 2768 (void) sm_strlcpyn(p, i, 3, fv, "@", 2769 macvalue('j', 2770 &MainEnvelope)); 2771 } 2772 else 2773 p = sm_strdup_x(fv); 2774 MainEnvelope.e_auth_param = sm_rpool_strdup_x(MainEnvelope.e_rpool, 2775 xtextify(p, "=")); 2776 sm_free(p); /* XXX */ 2777 } 2778 } 2779 if (macvalue('s', &MainEnvelope) == NULL) 2780 macdefine(&MainEnvelope.e_macro, A_PERM, 's', RealHostName); 2781 2782 av = argv + optind; 2783 if (*av == NULL && !GrabTo) 2784 { 2785 MainEnvelope.e_to = NULL; 2786 MainEnvelope.e_flags |= EF_GLOBALERRS; 2787 HoldErrs = false; 2788 SuperSafe = SAFE_NO; 2789 usrerr("Recipient names must be specified"); 2790 2791 /* collect body for UUCP return */ 2792 if (OpMode != MD_VERIFY) 2793 collect(InChannel, false, NULL, &MainEnvelope, true); 2794 finis(true, true, EX_USAGE); 2795 /* NOTREACHED */ 2796 } 2797 2798 /* 2799 ** Scan argv and deliver the message to everyone. 2800 */ 2801 2802 save_val = LogUsrErrs; 2803 LogUsrErrs = true; 2804 sendtoargv(av, &MainEnvelope); 2805 LogUsrErrs = save_val; 2806 2807 /* if we have had errors sofar, arrange a meaningful exit stat */ 2808 if (Errors > 0 && ExitStat == EX_OK) 2809 ExitStat = EX_USAGE; 2810 2811#if _FFR_FIX_DASHT 2812 /* 2813 ** If using -t, force not sending to argv recipients, even 2814 ** if they are mentioned in the headers. 2815 */ 2816 2817 if (GrabTo) 2818 { 2819 ADDRESS *q; 2820 2821 for (q = MainEnvelope.e_sendqueue; q != NULL; q = q->q_next) 2822 q->q_state = QS_REMOVED; 2823 } 2824#endif /* _FFR_FIX_DASHT */ 2825 2826 /* 2827 ** Read the input mail. 2828 */ 2829 2830 MainEnvelope.e_to = NULL; 2831 if (OpMode != MD_VERIFY || GrabTo) 2832 { 2833 int savederrors; 2834 unsigned long savedflags; 2835 2836 /* 2837 ** workaround for compiler warning on Irix: 2838 ** do not initialize variable in the definition, but 2839 ** later on: 2840 ** warning(1548): transfer of control bypasses 2841 ** initialization of: 2842 ** variable "savederrors" (declared at line 2570) 2843 ** variable "savedflags" (declared at line 2571) 2844 ** goto giveup; 2845 */ 2846 2847 savederrors = Errors; 2848 savedflags = MainEnvelope.e_flags & EF_FATALERRS; 2849 MainEnvelope.e_flags |= EF_GLOBALERRS; 2850 MainEnvelope.e_flags &= ~EF_FATALERRS; 2851 Errors = 0; 2852 buffer_errors(); 2853 collect(InChannel, false, NULL, &MainEnvelope, true); 2854 2855 /* header checks failed */ 2856 if (Errors > 0) 2857 { 2858 giveup: 2859 if (!GrabTo) 2860 { 2861 /* Log who the mail would have gone to */ 2862 logundelrcpts(&MainEnvelope, 2863 MainEnvelope.e_message, 2864 8, false); 2865 } 2866 flush_errors(true); 2867 finis(true, true, ExitStat); 2868 /* NOTREACHED */ 2869 return -1; 2870 } 2871 2872 /* bail out if message too large */ 2873 if (bitset(EF_CLRQUEUE, MainEnvelope.e_flags)) 2874 { 2875 finis(true, true, ExitStat != EX_OK ? ExitStat 2876 : EX_DATAERR); 2877 /* NOTREACHED */ 2878 return -1; 2879 } 2880 2881 /* set message size */ 2882 (void) sm_snprintf(buf, sizeof(buf), "%ld", 2883 PRT_NONNEGL(MainEnvelope.e_msgsize)); 2884 macdefine(&MainEnvelope.e_macro, A_TEMP, 2885 macid("{msg_size}"), buf); 2886 2887 Errors = savederrors; 2888 MainEnvelope.e_flags |= savedflags; 2889 } 2890 errno = 0; 2891 2892 if (tTd(1, 1)) 2893 sm_dprintf("From person = \"%s\"\n", 2894 MainEnvelope.e_from.q_paddr); 2895 2896 /* Check if quarantining stats should be updated */ 2897 if (MainEnvelope.e_quarmsg != NULL) 2898 markstats(&MainEnvelope, NULL, STATS_QUARANTINE); 2899 2900 /* 2901 ** Actually send everything. 2902 ** If verifying, just ack. 2903 */ 2904 2905 if (Errors == 0) 2906 { 2907 if (!split_by_recipient(&MainEnvelope) && 2908 bitset(EF_FATALERRS, MainEnvelope.e_flags)) 2909 goto giveup; 2910 } 2911 2912 /* make sure we deliver at least the first envelope */ 2913 i = FastSplit > 0 ? 0 : -1; 2914 for (e = &MainEnvelope; e != NULL; e = e->e_sibling, i++) 2915 { 2916 ENVELOPE *next; 2917 2918 e->e_from.q_state = QS_SENDER; 2919 if (tTd(1, 5)) 2920 { 2921 sm_dprintf("main[%d]: QS_SENDER ", i); 2922 printaddr(sm_debug_file(), &e->e_from, false); 2923 } 2924 e->e_to = NULL; 2925 sm_getla(); 2926 GrabTo = false; 2927#if NAMED_BIND 2928 _res.retry = TimeOuts.res_retry[RES_TO_FIRST]; 2929 _res.retrans = TimeOuts.res_retrans[RES_TO_FIRST]; 2930#endif /* NAMED_BIND */ 2931 next = e->e_sibling; 2932 e->e_sibling = NULL; 2933 2934 /* after FastSplit envelopes: queue up */ 2935 sendall(e, i >= FastSplit ? SM_QUEUE : SM_DEFAULT); 2936 e->e_sibling = next; 2937 } 2938 2939 /* 2940 ** All done. 2941 ** Don't send return error message if in VERIFY mode. 2942 */ 2943 2944 finis(true, true, ExitStat); 2945 /* NOTREACHED */ 2946 return ExitStat; 2947} 2948/* 2949** STOP_SENDMAIL -- Stop the running program 2950** 2951** Parameters: 2952** none. 2953** 2954** Returns: 2955** none. 2956** 2957** Side Effects: 2958** exits. 2959*/ 2960 2961void 2962stop_sendmail() 2963{ 2964 /* reset uid for process accounting */ 2965 endpwent(); 2966 (void) setuid(RealUid); 2967 exit(EX_OK); 2968} 2969/* 2970** FINIS -- Clean up and exit. 2971** 2972** Parameters: 2973** drop -- whether or not to drop CurEnv envelope 2974** cleanup -- call exit() or _exit()? 2975** exitstat -- exit status to use for exit() call 2976** 2977** Returns: 2978** never 2979** 2980** Side Effects: 2981** exits sendmail 2982*/ 2983 2984void 2985finis(drop, cleanup, exitstat) 2986 bool drop; 2987 bool cleanup; 2988 volatile int exitstat; 2989{ 2990 char pidpath[MAXPATHLEN]; 2991 pid_t pid; 2992 2993 /* Still want to process new timeouts added below */ 2994 sm_clear_events(); 2995 (void) sm_releasesignal(SIGALRM); 2996 2997 if (tTd(2, 1)) 2998 { 2999 sm_dprintf("\n====finis: stat %d e_id=%s e_flags=", 3000 exitstat, 3001 CurEnv->e_id == NULL ? "NOQUEUE" : CurEnv->e_id); 3002 printenvflags(CurEnv); 3003 } 3004 if (tTd(2, 9)) 3005 printopenfds(false); 3006 3007 SM_TRY 3008 /* 3009 ** Clean up. This might raise E:mta.quickabort 3010 */ 3011 3012 /* clean up temp files */ 3013 CurEnv->e_to = NULL; 3014 if (drop) 3015 { 3016 if (CurEnv->e_id != NULL) 3017 { 3018 int r; 3019 3020 r = dropenvelope(CurEnv, true, false); 3021 if (exitstat == EX_OK) 3022 exitstat = r; 3023 sm_rpool_free(CurEnv->e_rpool); 3024 CurEnv->e_rpool = NULL; 3025 3026 /* these may have pointed to the rpool */ 3027 CurEnv->e_to = NULL; 3028 CurEnv->e_message = NULL; 3029 CurEnv->e_statmsg = NULL; 3030 CurEnv->e_quarmsg = NULL; 3031 CurEnv->e_bodytype = NULL; 3032 CurEnv->e_id = NULL; 3033 CurEnv->e_envid = NULL; 3034 CurEnv->e_auth_param = NULL; 3035 } 3036 else 3037 poststats(StatFile); 3038 } 3039 3040 /* flush any cached connections */ 3041 mci_flush(true, NULL); 3042 3043 /* close maps belonging to this pid */ 3044 closemaps(false); 3045 3046#if USERDB 3047 /* close UserDatabase */ 3048 _udbx_close(); 3049#endif /* USERDB */ 3050 3051#if SASL 3052 stop_sasl_client(); 3053#endif /* SASL */ 3054 3055#if XLA 3056 /* clean up extended load average stuff */ 3057 xla_all_end(); 3058#endif /* XLA */ 3059 3060 SM_FINALLY 3061 /* 3062 ** And exit. 3063 */ 3064 3065 if (LogLevel > 78) 3066 sm_syslog(LOG_DEBUG, CurEnv->e_id, "finis, pid=%d", 3067 (int) CurrentPid); 3068 if (exitstat == EX_TEMPFAIL || 3069 CurEnv->e_errormode == EM_BERKNET) 3070 exitstat = EX_OK; 3071 3072 /* XXX clean up queues and related data structures */ 3073 cleanup_queues(); 3074 pid = getpid(); 3075#if SM_CONF_SHM 3076 cleanup_shm(DaemonPid == pid); 3077#endif /* SM_CONF_SHM */ 3078 3079 /* close locked pid file */ 3080 close_sendmail_pid(); 3081 3082 if (DaemonPid == pid || PidFilePid == pid) 3083 { 3084 /* blow away the pid file */ 3085 expand(PidFile, pidpath, sizeof(pidpath), CurEnv); 3086 (void) unlink(pidpath); 3087 } 3088 3089 /* reset uid for process accounting */ 3090 endpwent(); 3091 sm_mbdb_terminate(); 3092#if _FFR_MEMSTAT 3093 (void) sm_memstat_close(); 3094#endif /* _FFR_MEMSTAT */ 3095 (void) setuid(RealUid); 3096#if SM_HEAP_CHECK 3097 /* dump the heap, if we are checking for memory leaks */ 3098 if (sm_debug_active(&SmHeapCheck, 2)) 3099 sm_heap_report(smioout, 3100 sm_debug_level(&SmHeapCheck) - 1); 3101#endif /* SM_HEAP_CHECK */ 3102 if (sm_debug_active(&SmXtrapReport, 1)) 3103 sm_dprintf("xtrap count = %d\n", SmXtrapCount); 3104 if (cleanup) 3105 exit(exitstat); 3106 else 3107 _exit(exitstat); 3108 SM_END_TRY 3109} 3110/* 3111** INTINDEBUG -- signal handler for SIGINT in -bt mode 3112** 3113** Parameters: 3114** sig -- incoming signal. 3115** 3116** Returns: 3117** none. 3118** 3119** Side Effects: 3120** longjmps back to test mode loop. 3121** 3122** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3123** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3124** DOING. 3125*/ 3126 3127/* Type of an exception generated on SIGINT during address test mode. */ 3128static const SM_EXC_TYPE_T EtypeInterrupt = 3129{ 3130 SmExcTypeMagic, 3131 "S:mta.interrupt", 3132 "", 3133 sm_etype_printf, 3134 "interrupt", 3135}; 3136 3137/* ARGSUSED */ 3138static SIGFUNC_DECL 3139intindebug(sig) 3140 int sig; 3141{ 3142 int save_errno = errno; 3143 3144 FIX_SYSV_SIGNAL(sig, intindebug); 3145 errno = save_errno; 3146 CHECK_CRITICAL(sig); 3147 errno = save_errno; 3148 sm_exc_raisenew_x(&EtypeInterrupt); 3149 errno = save_errno; 3150 return SIGFUNC_RETURN; 3151} 3152/* 3153** SIGTERM -- SIGTERM handler for the daemon 3154** 3155** Parameters: 3156** sig -- signal number. 3157** 3158** Returns: 3159** none. 3160** 3161** Side Effects: 3162** Sets ShutdownRequest which will hopefully trigger 3163** the daemon to exit. 3164** 3165** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3166** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3167** DOING. 3168*/ 3169 3170/* ARGSUSED */ 3171static SIGFUNC_DECL 3172sigterm(sig) 3173 int sig; 3174{ 3175 int save_errno = errno; 3176 3177 FIX_SYSV_SIGNAL(sig, sigterm); 3178 ShutdownRequest = "signal"; 3179 errno = save_errno; 3180 return SIGFUNC_RETURN; 3181} 3182/* 3183** SIGHUP -- handle a SIGHUP signal 3184** 3185** Parameters: 3186** sig -- incoming signal. 3187** 3188** Returns: 3189** none. 3190** 3191** Side Effects: 3192** Sets RestartRequest which should cause the daemon 3193** to restart. 3194** 3195** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3196** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3197** DOING. 3198*/ 3199 3200/* ARGSUSED */ 3201static SIGFUNC_DECL 3202sighup(sig) 3203 int sig; 3204{ 3205 int save_errno = errno; 3206 3207 FIX_SYSV_SIGNAL(sig, sighup); 3208 RestartRequest = "signal"; 3209 errno = save_errno; 3210 return SIGFUNC_RETURN; 3211} 3212/* 3213** SIGPIPE -- signal handler for SIGPIPE 3214** 3215** Parameters: 3216** sig -- incoming signal. 3217** 3218** Returns: 3219** none. 3220** 3221** Side Effects: 3222** Sets StopRequest which should cause the mailq/hoststatus 3223** display to stop. 3224** 3225** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3226** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3227** DOING. 3228*/ 3229 3230/* ARGSUSED */ 3231static SIGFUNC_DECL 3232sigpipe(sig) 3233 int sig; 3234{ 3235 int save_errno = errno; 3236 3237 FIX_SYSV_SIGNAL(sig, sigpipe); 3238 StopRequest = true; 3239 errno = save_errno; 3240 return SIGFUNC_RETURN; 3241} 3242/* 3243** INTSIG -- clean up on interrupt 3244** 3245** This just arranges to exit. It pessimizes in that it 3246** may resend a message. 3247** 3248** Parameters: 3249** sig -- incoming signal. 3250** 3251** Returns: 3252** none. 3253** 3254** Side Effects: 3255** Unlocks the current job. 3256** 3257** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3258** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3259** DOING. 3260*/ 3261 3262/* ARGSUSED */ 3263SIGFUNC_DECL 3264intsig(sig) 3265 int sig; 3266{ 3267 bool drop = false; 3268 int save_errno = errno; 3269 3270 FIX_SYSV_SIGNAL(sig, intsig); 3271 errno = save_errno; 3272 CHECK_CRITICAL(sig); 3273 sm_allsignals(true); 3274 IntSig = true; 3275 3276 FileName = NULL; 3277 3278 /* Clean-up on aborted stdin message submission */ 3279 if (OpMode == MD_SMTP || 3280 OpMode == MD_DELIVER || 3281 OpMode == MD_ARPAFTP) 3282 { 3283 if (CurEnv->e_id != NULL) 3284 { 3285 char *fn; 3286 3287 fn = queuename(CurEnv, DATAFL_LETTER); 3288 if (fn != NULL) 3289 (void) unlink(fn); 3290 fn = queuename(CurEnv, ANYQFL_LETTER); 3291 if (fn != NULL) 3292 (void) unlink(fn); 3293 } 3294 _exit(EX_OK); 3295 /* NOTREACHED */ 3296 } 3297 3298 if (sig != 0 && LogLevel > 79) 3299 sm_syslog(LOG_DEBUG, CurEnv->e_id, "interrupt"); 3300 if (OpMode != MD_TEST) 3301 unlockqueue(CurEnv); 3302 3303 finis(drop, false, EX_OK); 3304 /* NOTREACHED */ 3305} 3306/* 3307** DISCONNECT -- remove our connection with any foreground process 3308** 3309** Parameters: 3310** droplev -- how "deeply" we should drop the line. 3311** 0 -- ignore signals, mail back errors, make sure 3312** output goes to stdout. 3313** 1 -- also, make stdout go to /dev/null. 3314** 2 -- also, disconnect from controlling terminal 3315** (only for daemon mode). 3316** e -- the current envelope. 3317** 3318** Returns: 3319** none 3320** 3321** Side Effects: 3322** Trys to insure that we are immune to vagaries of 3323** the controlling tty. 3324*/ 3325 3326void 3327disconnect(droplev, e) 3328 int droplev; 3329 register ENVELOPE *e; 3330{ 3331 int fd; 3332 3333 if (tTd(52, 1)) 3334 sm_dprintf("disconnect: In %d Out %d, e=%p\n", 3335 sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL), 3336 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL), e); 3337 if (tTd(52, 100)) 3338 { 3339 sm_dprintf("don't\n"); 3340 return; 3341 } 3342 if (LogLevel > 93) 3343 sm_syslog(LOG_DEBUG, e->e_id, 3344 "disconnect level %d", 3345 droplev); 3346 3347 /* be sure we don't get nasty signals */ 3348 (void) sm_signal(SIGINT, SIG_IGN); 3349 (void) sm_signal(SIGQUIT, SIG_IGN); 3350 3351 /* we can't communicate with our caller, so.... */ 3352 HoldErrs = true; 3353 CurEnv->e_errormode = EM_MAIL; 3354 Verbose = 0; 3355 DisConnected = true; 3356 3357 /* all input from /dev/null */ 3358 if (InChannel != smioin) 3359 { 3360 (void) sm_io_close(InChannel, SM_TIME_DEFAULT); 3361 InChannel = smioin; 3362 } 3363 if (sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3364 SM_IO_RDONLY, NULL, smioin) == NULL) 3365 sm_syslog(LOG_ERR, e->e_id, 3366 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3367 SM_PATH_DEVNULL, sm_errstring(errno)); 3368 3369 /* 3370 ** output to the transcript 3371 ** We also compare the fd numbers here since OutChannel 3372 ** might be a layer on top of smioout due to encryption 3373 ** (see sfsasl.c). 3374 */ 3375 3376 if (OutChannel != smioout && 3377 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL) != 3378 sm_io_getinfo(smioout, SM_IO_WHAT_FD, NULL)) 3379 { 3380 (void) sm_io_close(OutChannel, SM_TIME_DEFAULT); 3381 OutChannel = smioout; 3382 3383#if 0 3384 /* 3385 ** Has smioout been closed? Reopen it. 3386 ** This shouldn't happen anymore, the code is here 3387 ** just as a reminder. 3388 */ 3389 3390 if (smioout->sm_magic == NULL && 3391 sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3392 SM_IO_WRONLY, NULL, smioout) == NULL) 3393 sm_syslog(LOG_ERR, e->e_id, 3394 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3395 SM_PATH_DEVNULL, sm_errstring(errno)); 3396#endif /* 0 */ 3397 } 3398 if (droplev > 0) 3399 { 3400 fd = open(SM_PATH_DEVNULL, O_WRONLY, 0666); 3401 if (fd == -1) 3402 { 3403 sm_syslog(LOG_ERR, e->e_id, 3404 "disconnect: open(\"%s\") failed: %s", 3405 SM_PATH_DEVNULL, sm_errstring(errno)); 3406 } 3407 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 3408 if (fd >= 0) 3409 { 3410 (void) dup2(fd, STDOUT_FILENO); 3411 (void) dup2(fd, STDERR_FILENO); 3412 (void) close(fd); 3413 } 3414 } 3415 3416 /* drop our controlling TTY completely if possible */ 3417 if (droplev > 1) 3418 { 3419 (void) setsid(); 3420 errno = 0; 3421 } 3422 3423#if XDEBUG 3424 checkfd012("disconnect"); 3425#endif /* XDEBUG */ 3426 3427 if (LogLevel > 71) 3428 sm_syslog(LOG_DEBUG, e->e_id, "in background, pid=%d", 3429 (int) CurrentPid); 3430 3431 errno = 0; 3432} 3433 3434static void 3435obsolete(argv) 3436 char *argv[]; 3437{ 3438 register char *ap; 3439 register char *op; 3440 3441 while ((ap = *++argv) != NULL) 3442 { 3443 /* Return if "--" or not an option of any form. */ 3444 if (ap[0] != '-' || ap[1] == '-') 3445 return; 3446 3447 /* Don't allow users to use "-Q." or "-Q ." */ 3448 if ((ap[1] == 'Q' && ap[2] == '.') || 3449 (ap[1] == 'Q' && argv[1] != NULL && 3450 argv[1][0] == '.' && argv[1][1] == '\0')) 3451 { 3452 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3453 "Can not use -Q.\n"); 3454 exit(EX_USAGE); 3455 } 3456 3457 /* skip over options that do have a value */ 3458 op = strchr(OPTIONS, ap[1]); 3459 if (op != NULL && *++op == ':' && ap[2] == '\0' && 3460 ap[1] != 'd' && 3461#if defined(sony_news) 3462 ap[1] != 'E' && ap[1] != 'J' && 3463#endif /* defined(sony_news) */ 3464 argv[1] != NULL && argv[1][0] != '-') 3465 { 3466 argv++; 3467 continue; 3468 } 3469 3470 /* If -C doesn't have an argument, use sendmail.cf. */ 3471#define __DEFPATH "sendmail.cf" 3472 if (ap[1] == 'C' && ap[2] == '\0') 3473 { 3474 *argv = xalloc(sizeof(__DEFPATH) + 2); 3475 (void) sm_strlcpyn(argv[0], sizeof(__DEFPATH) + 2, 2, 3476 "-C", __DEFPATH); 3477 } 3478 3479 /* If -q doesn't have an argument, run it once. */ 3480 if (ap[1] == 'q' && ap[2] == '\0') 3481 *argv = "-q0"; 3482 3483 /* If -Q doesn't have an argument, disable quarantining */ 3484 if (ap[1] == 'Q' && ap[2] == '\0') 3485 *argv = "-Q."; 3486 3487 /* if -d doesn't have an argument, use 0-99.1 */ 3488 if (ap[1] == 'd' && ap[2] == '\0') 3489 *argv = "-d0-99.1"; 3490 3491#if defined(sony_news) 3492 /* if -E doesn't have an argument, use -EC */ 3493 if (ap[1] == 'E' && ap[2] == '\0') 3494 *argv = "-EC"; 3495 3496 /* if -J doesn't have an argument, use -JJ */ 3497 if (ap[1] == 'J' && ap[2] == '\0') 3498 *argv = "-JJ"; 3499#endif /* defined(sony_news) */ 3500 } 3501} 3502/* 3503** AUTH_WARNING -- specify authorization warning 3504** 3505** Parameters: 3506** e -- the current envelope. 3507** msg -- the text of the message. 3508** args -- arguments to the message. 3509** 3510** Returns: 3511** none. 3512*/ 3513 3514void 3515#ifdef __STDC__ 3516auth_warning(register ENVELOPE *e, const char *msg, ...) 3517#else /* __STDC__ */ 3518auth_warning(e, msg, va_alist) 3519 register ENVELOPE *e; 3520 const char *msg; 3521 va_dcl 3522#endif /* __STDC__ */ 3523{ 3524 char buf[MAXLINE]; 3525 SM_VA_LOCAL_DECL 3526 3527 if (bitset(PRIV_AUTHWARNINGS, PrivacyFlags)) 3528 { 3529 register char *p; 3530 static char hostbuf[48]; 3531 3532 if (hostbuf[0] == '\0') 3533 { 3534 struct hostent *hp; 3535 3536 hp = myhostname(hostbuf, sizeof(hostbuf)); 3537#if NETINET6 3538 if (hp != NULL) 3539 { 3540 freehostent(hp); 3541 hp = NULL; 3542 } 3543#endif /* NETINET6 */ 3544 } 3545 3546 (void) sm_strlcpyn(buf, sizeof(buf), 2, hostbuf, ": "); 3547 p = &buf[strlen(buf)]; 3548 SM_VA_START(ap, msg); 3549 (void) sm_vsnprintf(p, SPACELEFT(buf, p), msg, ap); 3550 SM_VA_END(ap); 3551 addheader("X-Authentication-Warning", buf, 0, e, true); 3552 if (LogLevel > 3) 3553 sm_syslog(LOG_INFO, e->e_id, 3554 "Authentication-Warning: %.400s", 3555 buf); 3556 } 3557} 3558/* 3559** GETEXTENV -- get from external environment 3560** 3561** Parameters: 3562** envar -- the name of the variable to retrieve 3563** 3564** Returns: 3565** The value, if any. 3566*/ 3567 3568static char * 3569getextenv(envar) 3570 const char *envar; 3571{ 3572 char **envp; 3573 int l; 3574 3575 l = strlen(envar); 3576 for (envp = ExternalEnviron; envp != NULL && *envp != NULL; envp++) 3577 { 3578 if (strncmp(*envp, envar, l) == 0 && (*envp)[l] == '=') 3579 return &(*envp)[l + 1]; 3580 } 3581 return NULL; 3582} 3583/* 3584** SM_SETUSERENV -- set an environment variable in the propagated environment 3585** 3586** Parameters: 3587** envar -- the name of the environment variable. 3588** value -- the value to which it should be set. If 3589** null, this is extracted from the incoming 3590** environment. If that is not set, the call 3591** to sm_setuserenv is ignored. 3592** 3593** Returns: 3594** none. 3595*/ 3596 3597void 3598sm_setuserenv(envar, value) 3599 const char *envar; 3600 const char *value; 3601{ 3602 int i, l; 3603 char **evp = UserEnviron; 3604 char *p; 3605 3606 if (value == NULL) 3607 { 3608 value = getextenv(envar); 3609 if (value == NULL) 3610 return; 3611 } 3612 3613 /* XXX enforce reasonable size? */ 3614 i = strlen(envar) + 1; 3615 l = strlen(value) + i + 1; 3616 p = (char *) xalloc(l); 3617 (void) sm_strlcpyn(p, l, 3, envar, "=", value); 3618 3619 while (*evp != NULL && strncmp(*evp, p, i) != 0) 3620 evp++; 3621 if (*evp != NULL) 3622 { 3623 *evp++ = p; 3624 } 3625 else if (evp < &UserEnviron[MAXUSERENVIRON]) 3626 { 3627 *evp++ = p; 3628 *evp = NULL; 3629 } 3630 3631 /* make sure it is in our environment as well */ 3632 if (putenv(p) < 0) 3633 syserr("sm_setuserenv: putenv(%s) failed", p); 3634} 3635/* 3636** DUMPSTATE -- dump state 3637** 3638** For debugging. 3639*/ 3640 3641void 3642dumpstate(when) 3643 char *when; 3644{ 3645 register char *j = macvalue('j', CurEnv); 3646 int rs; 3647 extern int NextMacroId; 3648 3649 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3650 "--- dumping state on %s: $j = %s ---", 3651 when, 3652 j == NULL ? "<NULL>" : j); 3653 if (j != NULL) 3654 { 3655 if (!wordinclass(j, 'w')) 3656 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3657 "*** $j not in $=w ***"); 3658 } 3659 sm_syslog(LOG_DEBUG, CurEnv->e_id, "CurChildren = %d", CurChildren); 3660 sm_syslog(LOG_DEBUG, CurEnv->e_id, "NextMacroId = %d (Max %d)", 3661 NextMacroId, MAXMACROID); 3662 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- open file descriptors: ---"); 3663 printopenfds(true); 3664 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- connection cache: ---"); 3665 mci_dump_all(smioout, true); 3666 rs = strtorwset("debug_dumpstate", NULL, ST_FIND); 3667 if (rs > 0) 3668 { 3669 int status; 3670 register char **pvp; 3671 char *pv[MAXATOM + 1]; 3672 3673 pv[0] = NULL; 3674 status = REWRITE(pv, rs, CurEnv); 3675 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3676 "--- ruleset debug_dumpstate returns stat %d, pv: ---", 3677 status); 3678 for (pvp = pv; *pvp != NULL; pvp++) 3679 sm_syslog(LOG_DEBUG, CurEnv->e_id, "%s", *pvp); 3680 } 3681 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- end of state dump ---"); 3682} 3683 3684#ifdef SIGUSR1 3685/* 3686** SIGUSR1 -- Signal a request to dump state. 3687** 3688** Parameters: 3689** sig -- calling signal. 3690** 3691** Returns: 3692** none. 3693** 3694** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3695** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3696** DOING. 3697** 3698** XXX: More work is needed for this signal handler. 3699*/ 3700 3701/* ARGSUSED */ 3702static SIGFUNC_DECL 3703sigusr1(sig) 3704 int sig; 3705{ 3706 int save_errno = errno; 3707 3708 FIX_SYSV_SIGNAL(sig, sigusr1); 3709 errno = save_errno; 3710 CHECK_CRITICAL(sig); 3711 dumpstate("user signal"); 3712# if SM_HEAP_CHECK 3713 dumpstab(); 3714# endif /* SM_HEAP_CHECK */ 3715 errno = save_errno; 3716 return SIGFUNC_RETURN; 3717} 3718#endif /* SIGUSR1 */ 3719 3720/* 3721** DROP_PRIVILEGES -- reduce privileges to those of the RunAsUser option 3722** 3723** Parameters: 3724** to_real_uid -- if set, drop to the real uid instead 3725** of the RunAsUser. 3726** 3727** Returns: 3728** EX_OSERR if the setuid failed. 3729** EX_OK otherwise. 3730*/ 3731 3732int 3733drop_privileges(to_real_uid) 3734 bool to_real_uid; 3735{ 3736 int rval = EX_OK; 3737 GIDSET_T emptygidset[1]; 3738 3739 if (tTd(47, 1)) 3740 sm_dprintf("drop_privileges(%d): Real[UG]id=%ld:%ld, get[ug]id=%ld:%ld, gete[ug]id=%ld:%ld, RunAs[UG]id=%ld:%ld\n", 3741 (int) to_real_uid, 3742 (long) RealUid, (long) RealGid, 3743 (long) getuid(), (long) getgid(), 3744 (long) geteuid(), (long) getegid(), 3745 (long) RunAsUid, (long) RunAsGid); 3746 3747 if (to_real_uid) 3748 { 3749 RunAsUserName = RealUserName; 3750 RunAsUid = RealUid; 3751 RunAsGid = RealGid; 3752 EffGid = RunAsGid; 3753 } 3754 3755 /* make sure no one can grab open descriptors for secret files */ 3756 endpwent(); 3757 sm_mbdb_terminate(); 3758 3759 /* reset group permissions; these can be set later */ 3760 emptygidset[0] = (to_real_uid || RunAsGid != 0) ? RunAsGid : getegid(); 3761 3762 /* 3763 ** Notice: on some OS (Linux...) the setgroups() call causes 3764 ** a logfile entry if sendmail is not run by root. 3765 ** However, it is unclear (no POSIX standard) whether 3766 ** setgroups() can only succeed if executed by root. 3767 ** So for now we keep it as it is; if you want to change it, use 3768 ** if (geteuid() == 0 && setgroups(1, emptygidset) == -1) 3769 */ 3770 3771 if (setgroups(1, emptygidset) == -1 && geteuid() == 0) 3772 { 3773 syserr("drop_privileges: setgroups(1, %d) failed", 3774 (int) emptygidset[0]); 3775 rval = EX_OSERR; 3776 } 3777 3778 /* reset primary group id */ 3779 if (to_real_uid) 3780 { 3781 /* 3782 ** Drop gid to real gid. 3783 ** On some OS we must reset the effective[/real[/saved]] gid, 3784 ** and then use setgid() to finally drop all group privileges. 3785 ** Later on we check whether we can get back the 3786 ** effective gid. 3787 */ 3788 3789#if HASSETEGID 3790 if (setegid(RunAsGid) < 0) 3791 { 3792 syserr("drop_privileges: setegid(%d) failed", 3793 (int) RunAsGid); 3794 rval = EX_OSERR; 3795 } 3796#else /* HASSETEGID */ 3797# if HASSETREGID 3798 if (setregid(RunAsGid, RunAsGid) < 0) 3799 { 3800 syserr("drop_privileges: setregid(%d, %d) failed", 3801 (int) RunAsGid, (int) RunAsGid); 3802 rval = EX_OSERR; 3803 } 3804# else /* HASSETREGID */ 3805# if HASSETRESGID 3806 if (setresgid(RunAsGid, RunAsGid, RunAsGid) < 0) 3807 { 3808 syserr("drop_privileges: setresgid(%d, %d, %d) failed", 3809 (int) RunAsGid, (int) RunAsGid, (int) RunAsGid); 3810 rval = EX_OSERR; 3811 } 3812# endif /* HASSETRESGID */ 3813# endif /* HASSETREGID */ 3814#endif /* HASSETEGID */ 3815 } 3816 if (rval == EX_OK && (to_real_uid || RunAsGid != 0)) 3817 { 3818 if (setgid(RunAsGid) < 0 && (!UseMSP || getegid() != RunAsGid)) 3819 { 3820 syserr("drop_privileges: setgid(%ld) failed", 3821 (long) RunAsGid); 3822 rval = EX_OSERR; 3823 } 3824 errno = 0; 3825 if (rval == EX_OK && getegid() != RunAsGid) 3826 { 3827 syserr("drop_privileges: Unable to set effective gid=%ld to RunAsGid=%ld", 3828 (long) getegid(), (long) RunAsGid); 3829 rval = EX_OSERR; 3830 } 3831 } 3832 3833 /* fiddle with uid */ 3834 if (to_real_uid || RunAsUid != 0) 3835 { 3836 uid_t euid; 3837 3838 /* 3839 ** Try to setuid(RunAsUid). 3840 ** euid must be RunAsUid, 3841 ** ruid must be RunAsUid unless (e|r)uid wasn't 0 3842 ** and we didn't have to drop privileges to the real uid. 3843 */ 3844 3845 if (setuid(RunAsUid) < 0 || 3846 geteuid() != RunAsUid || 3847 (getuid() != RunAsUid && 3848 (to_real_uid || geteuid() == 0 || getuid() == 0))) 3849 { 3850#if HASSETREUID 3851 /* 3852 ** if ruid != RunAsUid, euid == RunAsUid, then 3853 ** try resetting just the real uid, then using 3854 ** setuid() to drop the saved-uid as well. 3855 */ 3856 3857 if (geteuid() == RunAsUid) 3858 { 3859 if (setreuid(RunAsUid, -1) < 0) 3860 { 3861 syserr("drop_privileges: setreuid(%d, -1) failed", 3862 (int) RunAsUid); 3863 rval = EX_OSERR; 3864 } 3865 if (setuid(RunAsUid) < 0) 3866 { 3867 syserr("drop_privileges: second setuid(%d) attempt failed", 3868 (int) RunAsUid); 3869 rval = EX_OSERR; 3870 } 3871 } 3872 else 3873#endif /* HASSETREUID */ 3874 { 3875 syserr("drop_privileges: setuid(%d) failed", 3876 (int) RunAsUid); 3877 rval = EX_OSERR; 3878 } 3879 } 3880 euid = geteuid(); 3881 if (RunAsUid != 0 && setuid(0) == 0) 3882 { 3883 /* 3884 ** Believe it or not, the Linux capability model 3885 ** allows a non-root process to override setuid() 3886 ** on a process running as root and prevent that 3887 ** process from dropping privileges. 3888 */ 3889 3890 syserr("drop_privileges: setuid(0) succeeded (when it should not)"); 3891 rval = EX_OSERR; 3892 } 3893 else if (RunAsUid != euid && setuid(euid) == 0) 3894 { 3895 /* 3896 ** Some operating systems will keep the saved-uid 3897 ** if a non-root effective-uid calls setuid(real-uid) 3898 ** making it possible to set it back again later. 3899 */ 3900 3901 syserr("drop_privileges: Unable to drop non-root set-user-ID privileges"); 3902 rval = EX_OSERR; 3903 } 3904 } 3905 3906 if ((to_real_uid || RunAsGid != 0) && 3907 rval == EX_OK && RunAsGid != EffGid && 3908 getuid() != 0 && geteuid() != 0) 3909 { 3910 errno = 0; 3911 if (setgid(EffGid) == 0) 3912 { 3913 syserr("drop_privileges: setgid(%d) succeeded (when it should not)", 3914 (int) EffGid); 3915 rval = EX_OSERR; 3916 } 3917 } 3918 3919 if (tTd(47, 5)) 3920 { 3921 sm_dprintf("drop_privileges: e/ruid = %d/%d e/rgid = %d/%d\n", 3922 (int) geteuid(), (int) getuid(), 3923 (int) getegid(), (int) getgid()); 3924 sm_dprintf("drop_privileges: RunAsUser = %d:%d\n", 3925 (int) RunAsUid, (int) RunAsGid); 3926 if (tTd(47, 10)) 3927 sm_dprintf("drop_privileges: rval = %d\n", rval); 3928 } 3929 return rval; 3930} 3931/* 3932** FILL_FD -- make sure a file descriptor has been properly allocated 3933** 3934** Used to make sure that stdin/out/err are allocated on startup 3935** 3936** Parameters: 3937** fd -- the file descriptor to be filled. 3938** where -- a string used for logging. If NULL, this is 3939** being called on startup, and logging should 3940** not be done. 3941** 3942** Returns: 3943** none 3944** 3945** Side Effects: 3946** possibly changes MissingFds 3947*/ 3948 3949void 3950fill_fd(fd, where) 3951 int fd; 3952 char *where; 3953{ 3954 int i; 3955 struct stat stbuf; 3956 3957 if (fstat(fd, &stbuf) >= 0 || errno != EBADF) 3958 return; 3959 3960 if (where != NULL) 3961 syserr("fill_fd: %s: fd %d not open", where, fd); 3962 else 3963 MissingFds |= 1 << fd; 3964 i = open(SM_PATH_DEVNULL, fd == 0 ? O_RDONLY : O_WRONLY, 0666); 3965 if (i < 0) 3966 { 3967 syserr("!fill_fd: %s: cannot open %s", 3968 where == NULL ? "startup" : where, SM_PATH_DEVNULL); 3969 } 3970 if (fd != i) 3971 { 3972 (void) dup2(i, fd); 3973 (void) close(i); 3974 } 3975} 3976/* 3977** SM_PRINTOPTIONS -- print options 3978** 3979** Parameters: 3980** options -- array of options. 3981** 3982** Returns: 3983** none. 3984*/ 3985 3986static void 3987sm_printoptions(options) 3988 char **options; 3989{ 3990 int ll; 3991 char **av; 3992 3993 av = options; 3994 ll = 7; 3995 while (*av != NULL) 3996 { 3997 if (ll + strlen(*av) > 63) 3998 { 3999 sm_dprintf("\n"); 4000 ll = 0; 4001 } 4002 if (ll == 0) 4003 sm_dprintf("\t\t"); 4004 else 4005 sm_dprintf(" "); 4006 sm_dprintf("%s", *av); 4007 ll += strlen(*av++) + 1; 4008 } 4009 sm_dprintf("\n"); 4010} 4011 4012/* 4013** TO8BIT -- convert \octal sequences in a test mode input line 4014** 4015** Parameters: 4016** str -- the input line. 4017** 4018** Returns: 4019** none. 4020** 4021** Side Effects: 4022** replaces \0octal in str with octal value. 4023*/ 4024 4025static bool to8bit __P((char *)); 4026 4027static bool 4028to8bit(str) 4029 char *str; 4030{ 4031 int c, len; 4032 char *out, *in; 4033 bool changed; 4034 4035 if (str == NULL) 4036 return false; 4037 in = out = str; 4038 changed = false; 4039 len = 0; 4040 while ((c = (*str++ & 0377)) != '\0') 4041 { 4042 int oct, nxtc; 4043 4044 ++len; 4045 if (c == '\\' && 4046 (nxtc = (*str & 0377)) == '0') 4047 { 4048 oct = 0; 4049 while ((nxtc = (*str & 0377)) != '\0' && 4050 isascii(nxtc) && isdigit(nxtc)) 4051 { 4052 oct <<= 3; 4053 oct += nxtc - '0'; 4054 ++str; 4055 ++len; 4056 } 4057 changed = true; 4058 c = oct; 4059 } 4060 *out++ = c; 4061 } 4062 *out++ = c; 4063 if (changed) 4064 { 4065 char *q; 4066 4067 q = quote_internal_chars(in, in, &len); 4068 if (q != in) 4069 sm_strlcpy(in, q, len); 4070 } 4071 return changed; 4072} 4073 4074/* 4075** TESTMODELINE -- process a test mode input line 4076** 4077** Parameters: 4078** line -- the input line. 4079** e -- the current environment. 4080** Syntax: 4081** # a comment 4082** .X process X as a configuration line 4083** =X dump a configuration item (such as mailers) 4084** $X dump a macro or class 4085** /X try an activity 4086** X normal process through rule set X 4087*/ 4088 4089static void 4090testmodeline(line, e) 4091 char *line; 4092 ENVELOPE *e; 4093{ 4094 register char *p; 4095 char *q; 4096 auto char *delimptr; 4097 int mid; 4098 int i, rs; 4099 STAB *map; 4100 char **s; 4101 struct rewrite *rw; 4102 ADDRESS a; 4103 char *lbp; 4104 auto int lbs; 4105 static int tryflags = RF_COPYNONE; 4106 char exbuf[MAXLINE]; 4107 char lbuf[MAXLINE]; 4108 extern unsigned char TokTypeNoC[]; 4109 bool eightbit; 4110 4111 /* skip leading spaces */ 4112 while (*line == ' ') 4113 line++; 4114 4115 lbp = NULL; 4116 eightbit = false; 4117 switch (line[0]) 4118 { 4119 case '#': 4120 case '\0': 4121 return; 4122 4123 case '?': 4124 help("-bt", e); 4125 return; 4126 4127 case '.': /* config-style settings */ 4128 switch (line[1]) 4129 { 4130 case 'D': 4131 mid = macid_parse(&line[2], &delimptr); 4132 if (mid == 0) 4133 return; 4134 lbs = sizeof(lbuf); 4135 lbp = translate_dollars(delimptr, lbuf, &lbs); 4136 macdefine(&e->e_macro, A_TEMP, mid, lbp); 4137 if (lbp != lbuf) 4138 SM_FREE(lbp); 4139 break; 4140 4141 case 'C': 4142 if (line[2] == '\0') /* not to call syserr() */ 4143 return; 4144 4145 mid = macid_parse(&line[2], &delimptr); 4146 if (mid == 0) 4147 return; 4148 lbs = sizeof(lbuf); 4149 lbp = translate_dollars(delimptr, lbuf, &lbs); 4150 expand(lbp, exbuf, sizeof(exbuf), e); 4151 if (lbp != lbuf) 4152 SM_FREE(lbp); 4153 p = exbuf; 4154 while (*p != '\0') 4155 { 4156 register char *wd; 4157 char delim; 4158 4159 while (*p != '\0' && isascii(*p) && isspace(*p)) 4160 p++; 4161 wd = p; 4162 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 4163 p++; 4164 delim = *p; 4165 *p = '\0'; 4166 if (wd[0] != '\0') 4167 setclass(mid, wd); 4168 *p = delim; 4169 } 4170 break; 4171 4172 case '\0': 4173 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4174 "Usage: .[DC]macro value(s)\n"); 4175 break; 4176 4177 default: 4178 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4179 "Unknown \".\" command %s\n", line); 4180 break; 4181 } 4182 return; 4183 4184 case '=': /* config-style settings */ 4185 switch (line[1]) 4186 { 4187 case 'S': /* dump rule set */ 4188 rs = strtorwset(&line[2], NULL, ST_FIND); 4189 if (rs < 0) 4190 { 4191 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4192 "Undefined ruleset %s\n", &line[2]); 4193 return; 4194 } 4195 rw = RewriteRules[rs]; 4196 if (rw == NULL) 4197 return; 4198 do 4199 { 4200 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4201 'R'); 4202 s = rw->r_lhs; 4203 while (*s != NULL) 4204 { 4205 xputs(smioout, *s++); 4206 (void) sm_io_putc(smioout, 4207 SM_TIME_DEFAULT, ' '); 4208 } 4209 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4210 '\t'); 4211 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4212 '\t'); 4213 s = rw->r_rhs; 4214 while (*s != NULL) 4215 { 4216 xputs(smioout, *s++); 4217 (void) sm_io_putc(smioout, 4218 SM_TIME_DEFAULT, ' '); 4219 } 4220 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4221 '\n'); 4222 } while ((rw = rw->r_next) != NULL); 4223 break; 4224 4225 case 'M': 4226 for (i = 0; i < MAXMAILERS; i++) 4227 { 4228 if (Mailer[i] != NULL) 4229 printmailer(smioout, Mailer[i]); 4230 } 4231 break; 4232 4233 case '\0': 4234 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4235 "Usage: =Sruleset or =M\n"); 4236 break; 4237 4238 default: 4239 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4240 "Unknown \"=\" command %s\n", line); 4241 break; 4242 } 4243 return; 4244 4245 case '-': /* set command-line-like opts */ 4246 switch (line[1]) 4247 { 4248 case 'd': 4249 tTflag(&line[2]); 4250 break; 4251 4252 case '\0': 4253 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4254 "Usage: -d{debug arguments}\n"); 4255 break; 4256 4257 default: 4258 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4259 "Unknown \"-\" command %s\n", line); 4260 break; 4261 } 4262 return; 4263 4264 case '$': 4265 if (line[1] == '=') 4266 { 4267 mid = macid(&line[2]); 4268 if (mid != 0) 4269 stabapply(dump_class, mid); 4270 return; 4271 } 4272 mid = macid(&line[1]); 4273 if (mid == 0) 4274 return; 4275 p = macvalue(mid, e); 4276 if (p == NULL) 4277 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4278 "Undefined\n"); 4279 else 4280 { 4281 xputs(smioout, p); 4282 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4283 "\n"); 4284 } 4285 return; 4286 4287 case '/': /* miscellaneous commands */ 4288 p = &line[strlen(line)]; 4289 while (--p >= line && isascii(*p) && isspace(*p)) 4290 *p = '\0'; 4291 p = strpbrk(line, " \t"); 4292 if (p != NULL) 4293 { 4294 while (isascii(*p) && isspace(*p)) 4295 *p++ = '\0'; 4296 } 4297 else 4298 p = ""; 4299 if (line[1] == '\0') 4300 { 4301 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4302 "Usage: /[canon|map|mx|parse|try|tryflags]\n"); 4303 return; 4304 } 4305 if (sm_strcasecmp(&line[1], "quit") == 0) 4306 { 4307 CurEnv->e_id = NULL; 4308 finis(true, true, ExitStat); 4309 /* NOTREACHED */ 4310 } 4311 if (sm_strcasecmp(&line[1], "mx") == 0) 4312 { 4313#if NAMED_BIND 4314 /* look up MX records */ 4315 int nmx; 4316 auto int rcode; 4317 char *mxhosts[MAXMXHOSTS + 1]; 4318 4319 if (*p == '\0') 4320 { 4321 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4322 "Usage: /mx address\n"); 4323 return; 4324 } 4325 nmx = getmxrr(p, mxhosts, NULL, false, &rcode, true, 4326 NULL); 4327 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4328 "getmxrr(%s) returns %d value(s):\n", 4329 p, nmx); 4330 for (i = 0; i < nmx; i++) 4331 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4332 "\t%s\n", mxhosts[i]); 4333#else /* NAMED_BIND */ 4334 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4335 "No MX code compiled in\n"); 4336#endif /* NAMED_BIND */ 4337 } 4338 else if (sm_strcasecmp(&line[1], "canon") == 0) 4339 { 4340 char host[MAXHOSTNAMELEN]; 4341 4342 if (*p == '\0') 4343 { 4344 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4345 "Usage: /canon address\n"); 4346 return; 4347 } 4348 else if (sm_strlcpy(host, p, sizeof(host)) >= sizeof(host)) 4349 { 4350 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4351 "Name too long\n"); 4352 return; 4353 } 4354 (void) getcanonname(host, sizeof(host), !HasWildcardMX, 4355 NULL); 4356 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4357 "getcanonname(%s) returns %s\n", 4358 p, host); 4359 } 4360 else if (sm_strcasecmp(&line[1], "map") == 0) 4361 { 4362 auto int rcode = EX_OK; 4363 char *av[2]; 4364 4365 if (*p == '\0') 4366 { 4367 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4368 "Usage: /map mapname key\n"); 4369 return; 4370 } 4371 for (q = p; *q != '\0' && !(isascii(*q) && isspace(*q)); q++) 4372 continue; 4373 if (*q == '\0') 4374 { 4375 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4376 "No key specified\n"); 4377 return; 4378 } 4379 *q++ = '\0'; 4380 map = stab(p, ST_MAP, ST_FIND); 4381 if (map == NULL) 4382 { 4383 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4384 "Map named \"%s\" not found\n", p); 4385 return; 4386 } 4387 if (!bitset(MF_OPEN, map->s_map.map_mflags) && 4388 !openmap(&(map->s_map))) 4389 { 4390 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4391 "Map named \"%s\" not open\n", p); 4392 return; 4393 } 4394 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4395 "map_lookup: %s (%s) ", p, q); 4396 av[0] = q; 4397 av[1] = NULL; 4398 p = (*map->s_map.map_class->map_lookup) 4399 (&map->s_map, q, av, &rcode); 4400 if (p == NULL) 4401 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4402 "no match (%d)\n", 4403 rcode); 4404 else 4405 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4406 "returns %s (%d)\n", p, 4407 rcode); 4408 } 4409 else if (sm_strcasecmp(&line[1], "try") == 0) 4410 { 4411 MAILER *m; 4412 STAB *st; 4413 auto int rcode = EX_OK; 4414 4415 q = strpbrk(p, " \t"); 4416 if (q != NULL) 4417 { 4418 while (isascii(*q) && isspace(*q)) 4419 *q++ = '\0'; 4420 } 4421 if (q == NULL || *q == '\0') 4422 { 4423 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4424 "Usage: /try mailer address\n"); 4425 return; 4426 } 4427 st = stab(p, ST_MAILER, ST_FIND); 4428 if (st == NULL) 4429 { 4430 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4431 "Unknown mailer %s\n", p); 4432 return; 4433 } 4434 m = st->s_mailer; 4435 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4436 "Trying %s %s address %s for mailer %s\n", 4437 bitset(RF_HEADERADDR, tryflags) ? "header" 4438 : "envelope", 4439 bitset(RF_SENDERADDR, tryflags) ? "sender" 4440 : "recipient", q, p); 4441 p = remotename(q, m, tryflags, &rcode, CurEnv); 4442 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4443 "Rcode = %d, addr = %s\n", 4444 rcode, p == NULL ? "<NULL>" : p); 4445 e->e_to = NULL; 4446 } 4447 else if (sm_strcasecmp(&line[1], "tryflags") == 0) 4448 { 4449 if (*p == '\0') 4450 { 4451 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4452 "Usage: /tryflags [Hh|Ee][Ss|Rr]\n"); 4453 return; 4454 } 4455 for (; *p != '\0'; p++) 4456 { 4457 switch (*p) 4458 { 4459 case 'H': 4460 case 'h': 4461 tryflags |= RF_HEADERADDR; 4462 break; 4463 4464 case 'E': 4465 case 'e': 4466 tryflags &= ~RF_HEADERADDR; 4467 break; 4468 4469 case 'S': 4470 case 's': 4471 tryflags |= RF_SENDERADDR; 4472 break; 4473 4474 case 'R': 4475 case 'r': 4476 tryflags &= ~RF_SENDERADDR; 4477 break; 4478 } 4479 } 4480 exbuf[0] = bitset(RF_HEADERADDR, tryflags) ? 'h' : 'e'; 4481 exbuf[1] = ' '; 4482 exbuf[2] = bitset(RF_SENDERADDR, tryflags) ? 's' : 'r'; 4483 exbuf[3] = '\0'; 4484 macdefine(&e->e_macro, A_TEMP, 4485 macid("{addr_type}"), exbuf); 4486 } 4487 else if (sm_strcasecmp(&line[1], "parse") == 0) 4488 { 4489 if (*p == '\0') 4490 { 4491 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4492 "Usage: /parse address\n"); 4493 return; 4494 } 4495 q = crackaddr(p, e); 4496 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4497 "Cracked address = "); 4498 xputs(smioout, q); 4499 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4500 "\nParsing %s %s address\n", 4501 bitset(RF_HEADERADDR, tryflags) ? 4502 "header" : "envelope", 4503 bitset(RF_SENDERADDR, tryflags) ? 4504 "sender" : "recipient"); 4505 if (parseaddr(p, &a, tryflags, '\0', NULL, e, true) 4506 == NULL) 4507 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4508 "Cannot parse\n"); 4509 else if (a.q_host != NULL && a.q_host[0] != '\0') 4510 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4511 "mailer %s, host %s, user %s\n", 4512 a.q_mailer->m_name, 4513 a.q_host, 4514 a.q_user); 4515 else 4516 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4517 "mailer %s, user %s\n", 4518 a.q_mailer->m_name, 4519 a.q_user); 4520 e->e_to = NULL; 4521 } 4522 else if (sm_strcasecmp(&line[1], "header") == 0) 4523 { 4524 unsigned long ul; 4525 4526 ul = chompheader(p, CHHDR_CHECK|CHHDR_USER, NULL, e); 4527 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4528 "ul = %lu\n", ul); 4529 } 4530#if NETINET || NETINET6 4531 else if (sm_strcasecmp(&line[1], "gethostbyname") == 0) 4532 { 4533 int family = AF_INET; 4534 4535 q = strpbrk(p, " \t"); 4536 if (q != NULL) 4537 { 4538 while (isascii(*q) && isspace(*q)) 4539 *q++ = '\0'; 4540# if NETINET6 4541 if (*q != '\0' && (strcmp(q, "inet6") == 0 || 4542 strcmp(q, "AAAA") == 0)) 4543 family = AF_INET6; 4544# endif /* NETINET6 */ 4545 } 4546 (void) sm_gethostbyname(p, family); 4547 } 4548#endif /* NETINET || NETINET6 */ 4549 else 4550 { 4551 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4552 "Unknown \"/\" command %s\n", 4553 line); 4554 } 4555 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 4556 return; 4557 } 4558 4559 for (p = line; isascii(*p) && isspace(*p); p++) 4560 continue; 4561 q = p; 4562 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 4563 p++; 4564 if (*p == '\0') 4565 { 4566 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4567 "No address!\n"); 4568 return; 4569 } 4570 *p = '\0'; 4571 if (tTd(23, 101)) 4572 eightbit = to8bit(p + 1); 4573 if (invalidaddr(p + 1, NULL, true)) 4574 return; 4575 do 4576 { 4577 register char **pvp; 4578 char pvpbuf[PSBUFSIZE]; 4579 4580 pvp = prescan(++p, ',', pvpbuf, sizeof(pvpbuf), &delimptr, 4581 ConfigLevel >= 9 ? TokTypeNoC : ExtTokenTab, false); 4582 if (pvp == NULL) 4583 continue; 4584 p = q; 4585 while (*p != '\0') 4586 { 4587 int status; 4588 4589 rs = strtorwset(p, NULL, ST_FIND); 4590 if (rs < 0) 4591 { 4592 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4593 "Undefined ruleset %s\n", 4594 p); 4595 break; 4596 } 4597 status = REWRITE(pvp, rs, e); 4598 if (status != EX_OK) 4599 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4600 "== Ruleset %s (%d) status %d\n", 4601 p, rs, status); 4602 else if (eightbit) 4603 { 4604 cataddr(pvp, NULL, exbuf, sizeof(exbuf), '\0', 4605 true); 4606 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4607 "cataddr: %s\n", 4608 str2prt(exbuf)); 4609 } 4610 while (*p != '\0' && *p++ != ',') 4611 continue; 4612 } 4613 } while (*(p = delimptr) != '\0'); 4614 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 4615} 4616 4617static void 4618dump_class(s, id) 4619 register STAB *s; 4620 int id; 4621{ 4622 if (s->s_symtype != ST_CLASS) 4623 return; 4624 if (bitnset(bitidx(id), s->s_class)) 4625 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4626 "%s\n", s->s_name); 4627} 4628 4629/* 4630** An exception type used to create QuickAbort exceptions. 4631** This is my first cut at converting QuickAbort from longjmp to exceptions. 4632** These exceptions have a single integer argument, which is the argument 4633** to longjmp in the original code (either 1 or 2). I don't know the 4634** significance of 1 vs 2: the calls to setjmp don't care. 4635*/ 4636 4637const SM_EXC_TYPE_T EtypeQuickAbort = 4638{ 4639 SmExcTypeMagic, 4640 "E:mta.quickabort", 4641 "i", 4642 sm_etype_printf, 4643 "quick abort %0", 4644}; 4645