1 /* 2 * Copyright (c) 1998-2005 Sendmail, Inc. and its suppliers. 3 * All rights reserved. 4 * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved. 5 * Copyright (c) 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * By using this file, you agree to the terms and conditions set 9 * forth in the LICENSE file which can be found at the top level of 10 * the sendmail distribution. 11 * 12 */ 13 14 #define _DEFINE 15 #include <sendmail.h> 16 #include <sm/xtrap.h> 17 #include <sm/signal.h> 18 19 #ifndef lint 20 SM_UNUSED(static char copyright[]) = 21 "@(#) Copyright (c) 1998-2003 Sendmail, Inc. and its suppliers.\n\ 22 All rights reserved.\n\ 23 Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.\n\ 24 Copyright (c) 1988, 1993\n\ 25 The Regents of the University of California. All rights reserved.\n"; 26 #endif /* ! lint */ 27 28 SM_RCSID("@(#)$Id: main.c,v 8.942 2005/12/26 04:39:13 ca Exp $") 29 30 31 #if NETINET || NETINET6 32 # include <arpa/inet.h> 33 #endif /* NETINET || NETINET6 */ 34 35 /* for getcfname() */ 36 #include <sendmail/pathnames.h> 37 38 static SM_DEBUG_T 39 DebugNoPRestart = SM_DEBUG_INITIALIZER("no_persistent_restart", 40 "@(#)$Debug: no_persistent_restart - don't restart, log only $"); 41 42 static void dump_class __P((STAB *, int)); 43 static void obsolete __P((char **)); 44 static void testmodeline __P((char *, ENVELOPE *)); 45 static char *getextenv __P((const char *)); 46 static void sm_printoptions __P((char **)); 47 static SIGFUNC_DECL intindebug __P((int)); 48 static SIGFUNC_DECL sighup __P((int)); 49 static SIGFUNC_DECL sigpipe __P((int)); 50 static SIGFUNC_DECL sigterm __P((int)); 51 #ifdef SIGUSR1 52 static SIGFUNC_DECL sigusr1 __P((int)); 53 #endif /* SIGUSR1 */ 54 55 /* 56 ** SENDMAIL -- Post mail to a set of destinations. 57 ** 58 ** This is the basic mail router. All user mail programs should 59 ** call this routine to actually deliver mail. Sendmail in 60 ** turn calls a bunch of mail servers that do the real work of 61 ** delivering the mail. 62 ** 63 ** Sendmail is driven by settings read in from /etc/mail/sendmail.cf 64 ** (read by readcf.c). 65 ** 66 ** Usage: 67 ** /usr/lib/sendmail [flags] addr ... 68 ** 69 ** See the associated documentation for details. 70 ** 71 ** Authors: 72 ** Eric Allman, UCB/INGRES (until 10/81). 73 ** Britton-Lee, Inc., purveyors of fine 74 ** database computers (11/81 - 10/88). 75 ** International Computer Science Institute 76 ** (11/88 - 9/89). 77 ** UCB/Mammoth Project (10/89 - 7/95). 78 ** InReference, Inc. (8/95 - 1/97). 79 ** Sendmail, Inc. (1/98 - present). 80 ** The support of my employers is gratefully acknowledged. 81 ** Few of them (Britton-Lee in particular) have had 82 ** anything to gain from my involvement in this project. 83 ** 84 ** Gregory Neil Shapiro, 85 ** Worcester Polytechnic Institute (until 3/98). 86 ** Sendmail, Inc. (3/98 - present). 87 ** 88 ** Claus Assmann, 89 ** Sendmail, Inc. (12/98 - present). 90 */ 91 92 char *FullName; /* sender's full name */ 93 ENVELOPE BlankEnvelope; /* a "blank" envelope */ 94 static ENVELOPE MainEnvelope; /* the envelope around the basic letter */ 95 ADDRESS NullAddress = /* a null address */ 96 { "", "", NULL, "" }; 97 char *CommandLineArgs; /* command line args for pid file */ 98 bool Warn_Q_option = false; /* warn about Q option use */ 99 static int MissingFds = 0; /* bit map of fds missing on startup */ 100 char *Mbdb = "pw"; /* mailbox database defaults to /etc/passwd */ 101 102 #ifdef NGROUPS_MAX 103 GIDSET_T InitialGidSet[NGROUPS_MAX]; 104 #endif /* NGROUPS_MAX */ 105 106 #define MAXCONFIGLEVEL 10 /* highest config version level known */ 107 108 #if SASL 109 static sasl_callback_t srvcallbacks[] = 110 { 111 { SASL_CB_VERIFYFILE, &safesaslfile, NULL }, 112 { SASL_CB_PROXY_POLICY, &proxy_policy, NULL }, 113 { SASL_CB_LIST_END, NULL, NULL } 114 }; 115 #endif /* SASL */ 116 117 unsigned int SubmitMode; 118 int SyslogPrefixLen; /* estimated length of syslog prefix */ 119 #define PIDLEN 6 /* pid length for computing SyslogPrefixLen */ 120 #ifndef SL_FUDGE 121 # define SL_FUDGE 10 /* fudge offset for SyslogPrefixLen */ 122 #endif /* ! SL_FUDGE */ 123 #define SLDLL 8 /* est. length of default syslog label */ 124 125 126 /* Some options are dangerous to allow users to use in non-submit mode */ 127 #define CHECK_AGAINST_OPMODE(cmd) \ 128 { \ 129 if (extraprivs && \ 130 OpMode != MD_DELIVER && OpMode != MD_SMTP && \ 131 OpMode != MD_ARPAFTP && \ 132 OpMode != MD_VERIFY && OpMode != MD_TEST) \ 133 { \ 134 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \ 135 "WARNING: Ignoring submission mode -%c option (not in submission mode)\n", \ 136 (cmd)); \ 137 break; \ 138 } \ 139 if (extraprivs && queuerun) \ 140 { \ 141 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \ 142 "WARNING: Ignoring submission mode -%c option with -q\n", \ 143 (cmd)); \ 144 break; \ 145 } \ 146 } 147 148 int 149 main(argc, argv, envp) 150 int argc; 151 char **argv; 152 char **envp; 153 { 154 register char *p; 155 char **av; 156 extern char Version[]; 157 char *ep, *from; 158 STAB *st; 159 register int i; 160 int j; 161 int dp; 162 int fill_errno; 163 int qgrp = NOQGRP; /* queue group to process */ 164 bool safecf = true; 165 BITMAP256 *p_flags = NULL; /* daemon flags */ 166 bool warn_C_flag = false; 167 bool auth = true; /* whether to set e_auth_param */ 168 char warn_f_flag = '\0'; 169 bool run_in_foreground = false; /* -bD mode */ 170 bool queuerun = false, debug = false; 171 struct passwd *pw; 172 struct hostent *hp; 173 char *nullserver = NULL; 174 char *authinfo = NULL; 175 char *sysloglabel = NULL; /* label for syslog */ 176 char *conffile = NULL; /* name of .cf file */ 177 char *queuegroup = NULL; /* queue group to process */ 178 char *quarantining = NULL; /* quarantine queue items? */ 179 bool extraprivs; 180 bool forged, negate; 181 bool queuepersistent = false; /* queue runner process runs forever */ 182 bool foregroundqueue = false; /* queue run in foreground */ 183 bool save_val; /* to save some bool var. */ 184 int cftype; /* which cf file to use? */ 185 SM_FILE_T *smdebug; 186 static time_t starttime = 0; /* when was process started */ 187 struct stat traf_st; /* for TrafficLog FIFO check */ 188 char buf[MAXLINE]; 189 char jbuf[MAXHOSTNAMELEN]; /* holds MyHostName */ 190 static char rnamebuf[MAXNAME]; /* holds RealUserName */ 191 char *emptyenviron[1]; 192 #if STARTTLS 193 bool tls_ok; 194 #endif /* STARTTLS */ 195 QUEUE_CHAR *new; 196 ENVELOPE *e; 197 extern int DtableSize; 198 extern int optind; 199 extern int opterr; 200 extern char *optarg; 201 extern char **environ; 202 #if SASL 203 extern void sm_sasl_init __P((void)); 204 #endif /* SASL */ 205 206 #if USE_ENVIRON 207 envp = environ; 208 #endif /* USE_ENVIRON */ 209 210 /* turn off profiling */ 211 SM_PROF(0); 212 213 /* install default exception handler */ 214 sm_exc_newthread(fatal_error); 215 216 /* set the default in/out channel so errors reported to screen */ 217 InChannel = smioin; 218 OutChannel = smioout; 219 220 /* 221 ** Check to see if we reentered. 222 ** This would normally happen if e_putheader or e_putbody 223 ** were NULL when invoked. 224 */ 225 226 if (starttime != 0) 227 { 228 syserr("main: reentered!"); 229 abort(); 230 } 231 starttime = curtime(); 232 233 /* avoid null pointer dereferences */ 234 TermEscape.te_rv_on = TermEscape.te_rv_off = ""; 235 236 RealUid = getuid(); 237 RealGid = getgid(); 238 239 /* Check if sendmail is running with extra privs */ 240 extraprivs = (RealUid != 0 && 241 (geteuid() != getuid() || getegid() != getgid())); 242 243 CurrentPid = getpid(); 244 245 /* get whatever .cf file is right for the opmode */ 246 cftype = SM_GET_RIGHT_CF; 247 248 /* in 4.4BSD, the table can be huge; impose a reasonable limit */ 249 DtableSize = getdtsize(); 250 if (DtableSize > 256) 251 DtableSize = 256; 252 253 /* 254 ** Be sure we have enough file descriptors. 255 ** But also be sure that 0, 1, & 2 are open. 256 */ 257 258 /* reset errno and fill_errno; the latter is used way down below */ 259 errno = fill_errno = 0; 260 fill_fd(STDIN_FILENO, NULL); 261 if (errno != 0) 262 fill_errno = errno; 263 fill_fd(STDOUT_FILENO, NULL); 264 if (errno != 0) 265 fill_errno = errno; 266 fill_fd(STDERR_FILENO, NULL); 267 if (errno != 0) 268 fill_errno = errno; 269 270 sm_closefrom(STDERR_FILENO + 1, DtableSize); 271 errno = 0; 272 smdebug = NULL; 273 274 #if LOG 275 # ifndef SM_LOG_STR 276 # define SM_LOG_STR "sendmail" 277 # endif /* ! SM_LOG_STR */ 278 # ifdef LOG_MAIL 279 openlog(SM_LOG_STR, LOG_PID, LOG_MAIL); 280 # else /* LOG_MAIL */ 281 openlog(SM_LOG_STR, LOG_PID); 282 # endif /* LOG_MAIL */ 283 #endif /* LOG */ 284 285 /* 286 ** Seed the random number generator. 287 ** Used for queue file names, picking a queue directory, and 288 ** MX randomization. 289 */ 290 291 seed_random(); 292 293 /* do machine-dependent initializations */ 294 init_md(argc, argv); 295 296 297 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + SL_FUDGE + SLDLL; 298 299 /* reset status from syserr() calls for missing file descriptors */ 300 Errors = 0; 301 ExitStat = EX_OK; 302 303 SubmitMode = SUBMIT_UNKNOWN; 304 #if XDEBUG 305 checkfd012("after openlog"); 306 #endif /* XDEBUG */ 307 308 tTsetup(tTdvect, sizeof tTdvect, "0-99.1,*_trace_*.1"); 309 310 #ifdef NGROUPS_MAX 311 /* save initial group set for future checks */ 312 i = getgroups(NGROUPS_MAX, InitialGidSet); 313 if (i <= 0) 314 { 315 InitialGidSet[0] = (GID_T) -1; 316 i = 0; 317 } 318 while (i < NGROUPS_MAX) 319 InitialGidSet[i++] = InitialGidSet[0]; 320 #endif /* NGROUPS_MAX */ 321 322 /* drop group id privileges (RunAsUser not yet set) */ 323 dp = drop_privileges(false); 324 setstat(dp); 325 326 #ifdef SIGUSR1 327 /* Only allow root (or non-set-*-ID binaries) to use SIGUSR1 */ 328 if (!extraprivs) 329 { 330 /* arrange to dump state on user-1 signal */ 331 (void) sm_signal(SIGUSR1, sigusr1); 332 } 333 else 334 { 335 /* ignore user-1 signal */ 336 (void) sm_signal(SIGUSR1, SIG_IGN); 337 } 338 #endif /* SIGUSR1 */ 339 340 /* initialize for setproctitle */ 341 initsetproctitle(argc, argv, envp); 342 343 /* Handle any non-getoptable constructions. */ 344 obsolete(argv); 345 346 /* 347 ** Do a quick prescan of the argument list. 348 */ 349 350 351 /* find initial opMode */ 352 OpMode = MD_DELIVER; 353 av = argv; 354 p = strrchr(*av, '/'); 355 if (p++ == NULL) 356 p = *av; 357 if (strcmp(p, "newaliases") == 0) 358 OpMode = MD_INITALIAS; 359 else if (strcmp(p, "mailq") == 0) 360 OpMode = MD_PRINT; 361 else if (strcmp(p, "smtpd") == 0) 362 OpMode = MD_DAEMON; 363 else if (strcmp(p, "hoststat") == 0) 364 OpMode = MD_HOSTSTAT; 365 else if (strcmp(p, "purgestat") == 0) 366 OpMode = MD_PURGESTAT; 367 368 #if defined(__osf__) || defined(_AIX3) 369 # 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" 370 #endif /* defined(__osf__) || defined(_AIX3) */ 371 #if defined(sony_news) 372 # 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:" 373 #endif /* defined(sony_news) */ 374 #ifndef OPTIONS 375 # define OPTIONS "A:B:b:C:cD:d:e:F:f:Gh:IiL:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:" 376 #endif /* ! OPTIONS */ 377 378 /* Set to 0 to allow -b; need to check optarg before using it! */ 379 opterr = 0; 380 while ((j = getopt(argc, argv, OPTIONS)) != -1) 381 { 382 switch (j) 383 { 384 case 'b': /* operations mode */ 385 j = (optarg == NULL) ? ' ' : *optarg; 386 switch (j) 387 { 388 case MD_DAEMON: 389 case MD_FGDAEMON: 390 case MD_SMTP: 391 case MD_INITALIAS: 392 case MD_DELIVER: 393 case MD_VERIFY: 394 case MD_TEST: 395 case MD_PRINT: 396 case MD_PRINTNQE: 397 case MD_HOSTSTAT: 398 case MD_PURGESTAT: 399 case MD_ARPAFTP: 400 OpMode = j; 401 break; 402 403 case MD_FREEZE: 404 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 405 "Frozen configurations unsupported\n"); 406 return EX_USAGE; 407 408 default: 409 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 410 "Invalid operation mode %c\n", 411 j); 412 return EX_USAGE; 413 } 414 break; 415 416 case 'D': 417 if (debug) 418 { 419 errno = 0; 420 syserr("-D file must be before -d"); 421 ExitStat = EX_USAGE; 422 break; 423 } 424 dp = drop_privileges(true); 425 setstat(dp); 426 smdebug = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, 427 optarg, SM_IO_APPEND, NULL); 428 if (smdebug == NULL) 429 { 430 syserr("cannot open %s", optarg); 431 ExitStat = EX_CANTCREAT; 432 break; 433 } 434 sm_debug_setfile(smdebug); 435 break; 436 437 case 'd': 438 debug = true; 439 tTflag(optarg); 440 (void) sm_io_setvbuf(sm_debug_file(), SM_TIME_DEFAULT, 441 (char *) NULL, SM_IO_NBF, 442 SM_IO_BUFSIZ); 443 break; 444 445 case 'G': /* relay (gateway) submission */ 446 SubmitMode = SUBMIT_MTA; 447 break; 448 449 case 'L': 450 if (optarg == NULL) 451 { 452 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 453 "option requires an argument -- '%c'", 454 (char) j); 455 return EX_USAGE; 456 } 457 j = SM_MIN(strlen(optarg), 32) + 1; 458 sysloglabel = xalloc(j); 459 (void) sm_strlcpy(sysloglabel, optarg, j); 460 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + 461 SL_FUDGE + j; 462 break; 463 464 case 'Q': 465 case 'q': 466 /* just check if it is there */ 467 queuerun = true; 468 break; 469 } 470 } 471 opterr = 1; 472 473 /* Don't leak queue information via debug flags */ 474 if (extraprivs && queuerun && debug) 475 { 476 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 477 "WARNING: Can not use -d with -q. Disabling debugging.\n"); 478 sm_debug_close(); 479 sm_debug_setfile(NULL); 480 (void) memset(tTdvect, '\0', sizeof tTdvect); 481 } 482 483 #if LOG 484 if (sysloglabel != NULL) 485 { 486 /* Sanitize the string */ 487 for (p = sysloglabel; *p != '\0'; p++) 488 { 489 if (!isascii(*p) || !isprint(*p) || *p == '%') 490 *p = '*'; 491 } 492 closelog(); 493 # ifdef LOG_MAIL 494 openlog(sysloglabel, LOG_PID, LOG_MAIL); 495 # else /* LOG_MAIL */ 496 openlog(sysloglabel, LOG_PID); 497 # endif /* LOG_MAIL */ 498 } 499 #endif /* LOG */ 500 501 /* set up the blank envelope */ 502 BlankEnvelope.e_puthdr = putheader; 503 BlankEnvelope.e_putbody = putbody; 504 BlankEnvelope.e_xfp = NULL; 505 STRUCTCOPY(NullAddress, BlankEnvelope.e_from); 506 CurEnv = &BlankEnvelope; 507 STRUCTCOPY(NullAddress, MainEnvelope.e_from); 508 509 /* 510 ** Set default values for variables. 511 ** These cannot be in initialized data space. 512 */ 513 514 setdefaults(&BlankEnvelope); 515 initmacros(&BlankEnvelope); 516 517 /* reset macro */ 518 set_op_mode(OpMode); 519 520 pw = sm_getpwuid(RealUid); 521 if (pw != NULL) 522 (void) sm_strlcpy(rnamebuf, pw->pw_name, sizeof rnamebuf); 523 else 524 (void) sm_snprintf(rnamebuf, sizeof rnamebuf, "Unknown UID %d", 525 (int) RealUid); 526 527 RealUserName = rnamebuf; 528 529 if (tTd(0, 101)) 530 { 531 sm_dprintf("Version %s\n", Version); 532 finis(false, true, EX_OK); 533 /* NOTREACHED */ 534 } 535 536 /* 537 ** if running non-set-user-ID binary as non-root, pretend 538 ** we are the RunAsUid 539 */ 540 541 if (RealUid != 0 && geteuid() == RealUid) 542 { 543 if (tTd(47, 1)) 544 sm_dprintf("Non-set-user-ID binary: RunAsUid = RealUid = %d\n", 545 (int) RealUid); 546 RunAsUid = RealUid; 547 } 548 else if (geteuid() != 0) 549 RunAsUid = geteuid(); 550 551 EffGid = getegid(); 552 if (RealUid != 0 && EffGid == RealGid) 553 RunAsGid = RealGid; 554 555 if (tTd(47, 5)) 556 { 557 sm_dprintf("main: e/ruid = %d/%d e/rgid = %d/%d\n", 558 (int) geteuid(), (int) getuid(), 559 (int) getegid(), (int) getgid()); 560 sm_dprintf("main: RunAsUser = %d:%d\n", 561 (int) RunAsUid, (int) RunAsGid); 562 } 563 564 /* save command line arguments */ 565 j = 0; 566 for (av = argv; *av != NULL; ) 567 j += strlen(*av++) + 1; 568 SaveArgv = (char **) xalloc(sizeof (char *) * (argc + 1)); 569 CommandLineArgs = xalloc(j); 570 p = CommandLineArgs; 571 for (av = argv, i = 0; *av != NULL; ) 572 { 573 int h; 574 575 SaveArgv[i++] = newstr(*av); 576 if (av != argv) 577 *p++ = ' '; 578 (void) sm_strlcpy(p, *av++, j); 579 h = strlen(p); 580 p += h; 581 j -= h + 1; 582 } 583 SaveArgv[i] = NULL; 584 585 if (tTd(0, 1)) 586 { 587 extern char *CompileOptions[]; 588 589 sm_dprintf("Version %s\n Compiled with:", Version); 590 sm_printoptions(CompileOptions); 591 } 592 if (tTd(0, 10)) 593 { 594 extern char *OsCompileOptions[]; 595 596 sm_dprintf(" OS Defines:"); 597 sm_printoptions(OsCompileOptions); 598 #ifdef _PATH_UNIX 599 sm_dprintf("Kernel symbols:\t%s\n", _PATH_UNIX); 600 #endif /* _PATH_UNIX */ 601 602 sm_dprintf(" Conf file:\t%s (default for MSP)\n", 603 getcfname(OpMode, SubmitMode, SM_GET_SUBMIT_CF, 604 conffile)); 605 sm_dprintf(" Conf file:\t%s (default for MTA)\n", 606 getcfname(OpMode, SubmitMode, SM_GET_SENDMAIL_CF, 607 conffile)); 608 sm_dprintf(" Pid file:\t%s (default)\n", PidFile); 609 } 610 611 if (tTd(0, 12)) 612 { 613 extern char *SmCompileOptions[]; 614 615 sm_dprintf(" libsm Defines:"); 616 sm_printoptions(SmCompileOptions); 617 } 618 619 if (tTd(0, 13)) 620 { 621 extern char *FFRCompileOptions[]; 622 623 sm_dprintf(" FFR Defines:"); 624 sm_printoptions(FFRCompileOptions); 625 } 626 627 /* clear sendmail's environment */ 628 ExternalEnviron = environ; 629 emptyenviron[0] = NULL; 630 environ = emptyenviron; 631 632 /* 633 ** restore any original TZ setting until TimeZoneSpec has been 634 ** determined - or early log messages may get bogus time stamps 635 */ 636 637 if ((p = getextenv("TZ")) != NULL) 638 { 639 char *tz; 640 int tzlen; 641 642 /* XXX check for reasonable length? */ 643 tzlen = strlen(p) + 4; 644 tz = xalloc(tzlen); 645 (void) sm_strlcpyn(tz, tzlen, 2, "TZ=", p); 646 647 /* XXX check return code? */ 648 (void) putenv(tz); 649 } 650 651 /* prime the child environment */ 652 sm_setuserenv("AGENT", "sendmail"); 653 654 (void) sm_signal(SIGPIPE, SIG_IGN); 655 OldUmask = umask(022); 656 FullName = getextenv("NAME"); 657 if (FullName != NULL) 658 FullName = newstr(FullName); 659 660 /* 661 ** Initialize name server if it is going to be used. 662 */ 663 664 #if NAMED_BIND 665 if (!bitset(RES_INIT, _res.options)) 666 (void) res_init(); 667 if (tTd(8, 8)) 668 _res.options |= RES_DEBUG; 669 else 670 _res.options &= ~RES_DEBUG; 671 # ifdef RES_NOALIASES 672 _res.options |= RES_NOALIASES; 673 # endif /* RES_NOALIASES */ 674 TimeOuts.res_retry[RES_TO_DEFAULT] = _res.retry; 675 TimeOuts.res_retry[RES_TO_FIRST] = _res.retry; 676 TimeOuts.res_retry[RES_TO_NORMAL] = _res.retry; 677 TimeOuts.res_retrans[RES_TO_DEFAULT] = _res.retrans; 678 TimeOuts.res_retrans[RES_TO_FIRST] = _res.retrans; 679 TimeOuts.res_retrans[RES_TO_NORMAL] = _res.retrans; 680 #endif /* NAMED_BIND */ 681 682 errno = 0; 683 from = NULL; 684 685 /* initialize some macros, etc. */ 686 init_vendor_macros(&BlankEnvelope); 687 688 /* version */ 689 macdefine(&BlankEnvelope.e_macro, A_PERM, 'v', Version); 690 691 /* hostname */ 692 hp = myhostname(jbuf, sizeof jbuf); 693 if (jbuf[0] != '\0') 694 { 695 struct utsname utsname; 696 697 if (tTd(0, 4)) 698 sm_dprintf("Canonical name: %s\n", jbuf); 699 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'w', jbuf); 700 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'j', jbuf); 701 setclass('w', jbuf); 702 703 p = strchr(jbuf, '.'); 704 if (p != NULL && p[1] != '\0') 705 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'm', &p[1]); 706 707 if (uname(&utsname) >= 0) 708 p = utsname.nodename; 709 else 710 { 711 if (tTd(0, 22)) 712 sm_dprintf("uname failed (%s)\n", 713 sm_errstring(errno)); 714 makelower(jbuf); 715 p = jbuf; 716 } 717 if (tTd(0, 4)) 718 sm_dprintf(" UUCP nodename: %s\n", p); 719 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'k', p); 720 setclass('k', p); 721 setclass('w', p); 722 } 723 if (hp != NULL) 724 { 725 for (av = hp->h_aliases; av != NULL && *av != NULL; av++) 726 { 727 if (tTd(0, 4)) 728 sm_dprintf("\ta.k.a.: %s\n", *av); 729 setclass('w', *av); 730 } 731 #if NETINET || NETINET6 732 for (i = 0; i >= 0 && hp->h_addr_list[i] != NULL; i++) 733 { 734 # if NETINET6 735 char *addr; 736 char buf6[INET6_ADDRSTRLEN]; 737 struct in6_addr ia6; 738 # endif /* NETINET6 */ 739 # if NETINET 740 struct in_addr ia; 741 # endif /* NETINET */ 742 char ipbuf[103]; 743 744 ipbuf[0] = '\0'; 745 switch (hp->h_addrtype) 746 { 747 # if NETINET 748 case AF_INET: 749 if (hp->h_length != INADDRSZ) 750 break; 751 752 memmove(&ia, hp->h_addr_list[i], INADDRSZ); 753 (void) sm_snprintf(ipbuf, sizeof ipbuf, 754 "[%.100s]", inet_ntoa(ia)); 755 break; 756 # endif /* NETINET */ 757 758 # if NETINET6 759 case AF_INET6: 760 if (hp->h_length != IN6ADDRSZ) 761 break; 762 763 memmove(&ia6, hp->h_addr_list[i], IN6ADDRSZ); 764 addr = anynet_ntop(&ia6, buf6, sizeof buf6); 765 if (addr != NULL) 766 (void) sm_snprintf(ipbuf, sizeof ipbuf, 767 "[%.100s]", addr); 768 break; 769 # endif /* NETINET6 */ 770 } 771 if (ipbuf[0] == '\0') 772 break; 773 774 if (tTd(0, 4)) 775 sm_dprintf("\ta.k.a.: %s\n", ipbuf); 776 setclass('w', ipbuf); 777 } 778 #endif /* NETINET || NETINET6 */ 779 #if NETINET6 780 freehostent(hp); 781 hp = NULL; 782 #endif /* NETINET6 */ 783 } 784 785 /* current time */ 786 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'b', arpadate((char *) NULL)); 787 788 /* current load average */ 789 sm_getla(); 790 791 QueueLimitRecipient = (QUEUE_CHAR *) NULL; 792 QueueLimitSender = (QUEUE_CHAR *) NULL; 793 QueueLimitId = (QUEUE_CHAR *) NULL; 794 QueueLimitQuarantine = (QUEUE_CHAR *) NULL; 795 796 /* 797 ** Crack argv. 798 */ 799 800 optind = 1; 801 while ((j = getopt(argc, argv, OPTIONS)) != -1) 802 { 803 switch (j) 804 { 805 case 'b': /* operations mode */ 806 /* already done */ 807 break; 808 809 case 'A': /* use Alternate sendmail/submit.cf */ 810 cftype = optarg[0] == 'c' ? SM_GET_SUBMIT_CF 811 : SM_GET_SENDMAIL_CF; 812 break; 813 814 case 'B': /* body type */ 815 CHECK_AGAINST_OPMODE(j); 816 BlankEnvelope.e_bodytype = newstr(optarg); 817 break; 818 819 case 'C': /* select configuration file (already done) */ 820 if (RealUid != 0) 821 warn_C_flag = true; 822 conffile = newstr(optarg); 823 dp = drop_privileges(true); 824 setstat(dp); 825 safecf = false; 826 break; 827 828 case 'D': 829 case 'd': /* debugging */ 830 /* already done */ 831 break; 832 833 case 'f': /* from address */ 834 case 'r': /* obsolete -f flag */ 835 CHECK_AGAINST_OPMODE(j); 836 if (from != NULL) 837 { 838 usrerr("More than one \"from\" person"); 839 ExitStat = EX_USAGE; 840 break; 841 } 842 if (optarg[0] == '\0') 843 from = newstr("<>"); 844 else 845 from = newstr(denlstring(optarg, true, true)); 846 if (strcmp(RealUserName, from) != 0) 847 warn_f_flag = j; 848 break; 849 850 case 'F': /* set full name */ 851 CHECK_AGAINST_OPMODE(j); 852 FullName = newstr(optarg); 853 break; 854 855 case 'G': /* relay (gateway) submission */ 856 /* already set */ 857 CHECK_AGAINST_OPMODE(j); 858 break; 859 860 case 'h': /* hop count */ 861 CHECK_AGAINST_OPMODE(j); 862 BlankEnvelope.e_hopcount = (short) strtol(optarg, &ep, 863 10); 864 (void) sm_snprintf(buf, sizeof buf, "%d", 865 BlankEnvelope.e_hopcount); 866 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'c', buf); 867 868 if (*ep) 869 { 870 usrerr("Bad hop count (%s)", optarg); 871 ExitStat = EX_USAGE; 872 } 873 break; 874 875 case 'L': /* program label */ 876 /* already set */ 877 break; 878 879 case 'n': /* don't alias */ 880 CHECK_AGAINST_OPMODE(j); 881 NoAlias = true; 882 break; 883 884 case 'N': /* delivery status notifications */ 885 CHECK_AGAINST_OPMODE(j); 886 DefaultNotify |= QHASNOTIFY; 887 macdefine(&BlankEnvelope.e_macro, A_TEMP, 888 macid("{dsn_notify}"), optarg); 889 if (sm_strcasecmp(optarg, "never") == 0) 890 break; 891 for (p = optarg; p != NULL; optarg = p) 892 { 893 p = strchr(p, ','); 894 if (p != NULL) 895 *p++ = '\0'; 896 if (sm_strcasecmp(optarg, "success") == 0) 897 DefaultNotify |= QPINGONSUCCESS; 898 else if (sm_strcasecmp(optarg, "failure") == 0) 899 DefaultNotify |= QPINGONFAILURE; 900 else if (sm_strcasecmp(optarg, "delay") == 0) 901 DefaultNotify |= QPINGONDELAY; 902 else 903 { 904 usrerr("Invalid -N argument"); 905 ExitStat = EX_USAGE; 906 } 907 } 908 break; 909 910 case 'o': /* set option */ 911 setoption(*optarg, optarg + 1, false, true, 912 &BlankEnvelope); 913 break; 914 915 case 'O': /* set option (long form) */ 916 setoption(' ', optarg, false, true, &BlankEnvelope); 917 break; 918 919 case 'p': /* set protocol */ 920 CHECK_AGAINST_OPMODE(j); 921 p = strchr(optarg, ':'); 922 if (p != NULL) 923 { 924 *p++ = '\0'; 925 if (*p != '\0') 926 { 927 i = strlen(p) + 1; 928 ep = sm_malloc_x(i); 929 cleanstrcpy(ep, p, i); 930 macdefine(&BlankEnvelope.e_macro, 931 A_HEAP, 's', ep); 932 } 933 } 934 if (*optarg != '\0') 935 { 936 i = strlen(optarg) + 1; 937 ep = sm_malloc_x(i); 938 cleanstrcpy(ep, optarg, i); 939 macdefine(&BlankEnvelope.e_macro, A_HEAP, 940 'r', ep); 941 } 942 break; 943 944 case 'Q': /* change quarantining on queued items */ 945 /* sanity check */ 946 if (OpMode != MD_DELIVER && 947 OpMode != MD_QUEUERUN) 948 { 949 usrerr("Can not use -Q with -b%c", OpMode); 950 ExitStat = EX_USAGE; 951 break; 952 } 953 954 if (OpMode == MD_DELIVER) 955 set_op_mode(MD_QUEUERUN); 956 957 FullName = NULL; 958 959 quarantining = newstr(optarg); 960 break; 961 962 case 'q': /* run queue files at intervals */ 963 /* sanity check */ 964 if (OpMode != MD_DELIVER && 965 OpMode != MD_DAEMON && 966 OpMode != MD_FGDAEMON && 967 OpMode != MD_PRINT && 968 OpMode != MD_PRINTNQE && 969 OpMode != MD_QUEUERUN) 970 { 971 usrerr("Can not use -q with -b%c", OpMode); 972 ExitStat = EX_USAGE; 973 break; 974 } 975 976 /* don't override -bd, -bD or -bp */ 977 if (OpMode == MD_DELIVER) 978 set_op_mode(MD_QUEUERUN); 979 980 FullName = NULL; 981 negate = optarg[0] == '!'; 982 if (negate) 983 { 984 /* negate meaning of pattern match */ 985 optarg++; /* skip '!' for next switch */ 986 } 987 988 switch (optarg[0]) 989 { 990 case 'G': /* Limit by queue group name */ 991 if (negate) 992 { 993 usrerr("Can not use -q!G"); 994 ExitStat = EX_USAGE; 995 break; 996 } 997 if (queuegroup != NULL) 998 { 999 usrerr("Can not use multiple -qG options"); 1000 ExitStat = EX_USAGE; 1001 break; 1002 } 1003 queuegroup = newstr(&optarg[1]); 1004 break; 1005 1006 case 'I': /* Limit by ID */ 1007 new = (QUEUE_CHAR *) xalloc(sizeof *new); 1008 new->queue_match = newstr(&optarg[1]); 1009 new->queue_negate = negate; 1010 new->queue_next = QueueLimitId; 1011 QueueLimitId = new; 1012 break; 1013 1014 case 'R': /* Limit by recipient */ 1015 new = (QUEUE_CHAR *) xalloc(sizeof *new); 1016 new->queue_match = newstr(&optarg[1]); 1017 new->queue_negate = negate; 1018 new->queue_next = QueueLimitRecipient; 1019 QueueLimitRecipient = new; 1020 break; 1021 1022 case 'S': /* Limit by sender */ 1023 new = (QUEUE_CHAR *) xalloc(sizeof *new); 1024 new->queue_match = newstr(&optarg[1]); 1025 new->queue_negate = negate; 1026 new->queue_next = QueueLimitSender; 1027 QueueLimitSender = new; 1028 break; 1029 1030 case 'f': /* foreground queue run */ 1031 foregroundqueue = true; 1032 break; 1033 1034 case 'Q': /* Limit by quarantine message */ 1035 if (optarg[1] != '\0') 1036 { 1037 new = (QUEUE_CHAR *) xalloc(sizeof *new); 1038 new->queue_match = newstr(&optarg[1]); 1039 new->queue_negate = negate; 1040 new->queue_next = QueueLimitQuarantine; 1041 QueueLimitQuarantine = new; 1042 } 1043 QueueMode = QM_QUARANTINE; 1044 break; 1045 1046 case 'L': /* act on lost items */ 1047 QueueMode = QM_LOST; 1048 break; 1049 1050 case 'p': /* Persistent queue */ 1051 queuepersistent = true; 1052 if (QueueIntvl == 0) 1053 QueueIntvl = 1; 1054 if (optarg[1] == '\0') 1055 break; 1056 ++optarg; 1057 /* FALLTHROUGH */ 1058 1059 default: 1060 i = Errors; 1061 QueueIntvl = convtime(optarg, 'm'); 1062 if (QueueIntvl < 0) 1063 { 1064 usrerr("Invalid -q value"); 1065 ExitStat = EX_USAGE; 1066 } 1067 1068 /* check for bad conversion */ 1069 if (i < Errors) 1070 ExitStat = EX_USAGE; 1071 break; 1072 } 1073 break; 1074 1075 case 'R': /* DSN RET: what to return */ 1076 CHECK_AGAINST_OPMODE(j); 1077 if (bitset(EF_RET_PARAM, BlankEnvelope.e_flags)) 1078 { 1079 usrerr("Duplicate -R flag"); 1080 ExitStat = EX_USAGE; 1081 break; 1082 } 1083 BlankEnvelope.e_flags |= EF_RET_PARAM; 1084 if (sm_strcasecmp(optarg, "hdrs") == 0) 1085 BlankEnvelope.e_flags |= EF_NO_BODY_RETN; 1086 else if (sm_strcasecmp(optarg, "full") != 0) 1087 { 1088 usrerr("Invalid -R value"); 1089 ExitStat = EX_USAGE; 1090 } 1091 macdefine(&BlankEnvelope.e_macro, A_TEMP, 1092 macid("{dsn_ret}"), optarg); 1093 break; 1094 1095 case 't': /* read recipients from message */ 1096 CHECK_AGAINST_OPMODE(j); 1097 GrabTo = true; 1098 break; 1099 1100 case 'V': /* DSN ENVID: set "original" envelope id */ 1101 CHECK_AGAINST_OPMODE(j); 1102 if (!xtextok(optarg)) 1103 { 1104 usrerr("Invalid syntax in -V flag"); 1105 ExitStat = EX_USAGE; 1106 } 1107 else 1108 { 1109 BlankEnvelope.e_envid = newstr(optarg); 1110 macdefine(&BlankEnvelope.e_macro, A_TEMP, 1111 macid("{dsn_envid}"), optarg); 1112 } 1113 break; 1114 1115 case 'X': /* traffic log file */ 1116 dp = drop_privileges(true); 1117 setstat(dp); 1118 if (stat(optarg, &traf_st) == 0 && 1119 S_ISFIFO(traf_st.st_mode)) 1120 TrafficLogFile = sm_io_open(SmFtStdio, 1121 SM_TIME_DEFAULT, 1122 optarg, 1123 SM_IO_WRONLY, NULL); 1124 else 1125 TrafficLogFile = sm_io_open(SmFtStdio, 1126 SM_TIME_DEFAULT, 1127 optarg, 1128 SM_IO_APPEND, NULL); 1129 if (TrafficLogFile == NULL) 1130 { 1131 syserr("cannot open %s", optarg); 1132 ExitStat = EX_CANTCREAT; 1133 break; 1134 } 1135 (void) sm_io_setvbuf(TrafficLogFile, SM_TIME_DEFAULT, 1136 NULL, SM_IO_LBF, 0); 1137 break; 1138 1139 /* compatibility flags */ 1140 case 'c': /* connect to non-local mailers */ 1141 case 'i': /* don't let dot stop me */ 1142 case 'm': /* send to me too */ 1143 case 'T': /* set timeout interval */ 1144 case 'v': /* give blow-by-blow description */ 1145 setoption(j, "T", false, true, &BlankEnvelope); 1146 break; 1147 1148 case 'e': /* error message disposition */ 1149 case 'M': /* define macro */ 1150 setoption(j, optarg, false, true, &BlankEnvelope); 1151 break; 1152 1153 case 's': /* save From lines in headers */ 1154 setoption('f', "T", false, true, &BlankEnvelope); 1155 break; 1156 1157 #ifdef DBM 1158 case 'I': /* initialize alias DBM file */ 1159 set_op_mode(MD_INITALIAS); 1160 break; 1161 #endif /* DBM */ 1162 1163 #if defined(__osf__) || defined(_AIX3) 1164 case 'x': /* random flag that OSF/1 & AIX mailx passes */ 1165 break; 1166 #endif /* defined(__osf__) || defined(_AIX3) */ 1167 #if defined(sony_news) 1168 case 'E': 1169 case 'J': /* ignore flags for Japanese code conversion 1170 implemented on Sony NEWS */ 1171 break; 1172 #endif /* defined(sony_news) */ 1173 1174 default: 1175 finis(true, true, EX_USAGE); 1176 /* NOTREACHED */ 1177 break; 1178 } 1179 } 1180 1181 /* if we've had errors so far, exit now */ 1182 if ((ExitStat != EX_OK && OpMode != MD_TEST) || 1183 ExitStat == EX_OSERR) 1184 { 1185 finis(false, true, ExitStat); 1186 /* NOTREACHED */ 1187 } 1188 1189 if (bitset(SUBMIT_MTA, SubmitMode)) 1190 { 1191 /* If set daemon_flags on command line, don't reset it */ 1192 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL) 1193 macdefine(&BlankEnvelope.e_macro, A_PERM, 1194 macid("{daemon_flags}"), "CC f"); 1195 } 1196 else if (OpMode == MD_DELIVER || OpMode == MD_SMTP) 1197 { 1198 SubmitMode = SUBMIT_MSA; 1199 1200 /* If set daemon_flags on command line, don't reset it */ 1201 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL) 1202 macdefine(&BlankEnvelope.e_macro, A_PERM, 1203 macid("{daemon_flags}"), "c u"); 1204 } 1205 1206 /* 1207 ** Do basic initialization. 1208 ** Read system control file. 1209 ** Extract special fields for local use. 1210 */ 1211 1212 #if XDEBUG 1213 checkfd012("before readcf"); 1214 #endif /* XDEBUG */ 1215 vendor_pre_defaults(&BlankEnvelope); 1216 1217 readcf(getcfname(OpMode, SubmitMode, cftype, conffile), 1218 safecf, &BlankEnvelope); 1219 #if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) 1220 ConfigFileRead = true; 1221 #endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */ 1222 vendor_post_defaults(&BlankEnvelope); 1223 1224 /* now we can complain about missing fds */ 1225 if (MissingFds != 0 && LogLevel > 8) 1226 { 1227 char mbuf[MAXLINE]; 1228 1229 mbuf[0] = '\0'; 1230 if (bitset(1 << STDIN_FILENO, MissingFds)) 1231 (void) sm_strlcat(mbuf, ", stdin", sizeof mbuf); 1232 if (bitset(1 << STDOUT_FILENO, MissingFds)) 1233 (void) sm_strlcat(mbuf, ", stdout", sizeof mbuf); 1234 if (bitset(1 << STDERR_FILENO, MissingFds)) 1235 (void) sm_strlcat(mbuf, ", stderr", sizeof mbuf); 1236 1237 /* Notice: fill_errno is from high above: fill_fd() */ 1238 sm_syslog(LOG_WARNING, NOQID, 1239 "File descriptors missing on startup: %s; %s", 1240 &mbuf[2], sm_errstring(fill_errno)); 1241 } 1242 1243 /* Remove the ability for a normal user to send signals */ 1244 if (RealUid != 0 && RealUid != geteuid()) 1245 { 1246 uid_t new_uid = geteuid(); 1247 1248 #if HASSETREUID 1249 /* 1250 ** Since we can differentiate between uid and euid, 1251 ** make the uid a different user so the real user 1252 ** can't send signals. However, it doesn't need to be 1253 ** root (euid has root). 1254 */ 1255 1256 if (new_uid == 0) 1257 new_uid = DefUid; 1258 if (tTd(47, 5)) 1259 sm_dprintf("Changing real uid to %d\n", (int) new_uid); 1260 if (setreuid(new_uid, geteuid()) < 0) 1261 { 1262 syserr("main: setreuid(%d, %d) failed", 1263 (int) new_uid, (int) geteuid()); 1264 finis(false, true, EX_OSERR); 1265 /* NOTREACHED */ 1266 } 1267 if (tTd(47, 10)) 1268 sm_dprintf("Now running as e/ruid %d:%d\n", 1269 (int) geteuid(), (int) getuid()); 1270 #else /* HASSETREUID */ 1271 /* 1272 ** Have to change both effective and real so need to 1273 ** change them both to effective to keep privs. 1274 */ 1275 1276 if (tTd(47, 5)) 1277 sm_dprintf("Changing uid to %d\n", (int) new_uid); 1278 if (setuid(new_uid) < 0) 1279 { 1280 syserr("main: setuid(%d) failed", (int) new_uid); 1281 finis(false, true, EX_OSERR); 1282 /* NOTREACHED */ 1283 } 1284 if (tTd(47, 10)) 1285 sm_dprintf("Now running as e/ruid %d:%d\n", 1286 (int) geteuid(), (int) getuid()); 1287 #endif /* HASSETREUID */ 1288 } 1289 1290 #if NAMED_BIND 1291 if (FallbackMX != NULL) 1292 (void) getfallbackmxrr(FallbackMX); 1293 #endif /* NAMED_BIND */ 1294 1295 if (SuperSafe == SAFE_INTERACTIVE && CurEnv->e_sendmode != SM_DELIVER) 1296 { 1297 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1298 "WARNING: SuperSafe=interactive should only be used with\n DeliveryMode=interactive\n"); 1299 } 1300 1301 if (UseMSP && (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON)) 1302 { 1303 usrerr("Mail submission program cannot be used as daemon"); 1304 finis(false, true, EX_USAGE); 1305 } 1306 1307 if (OpMode == MD_DELIVER || OpMode == MD_SMTP || 1308 OpMode == MD_QUEUERUN || OpMode == MD_ARPAFTP || 1309 OpMode == MD_DAEMON || OpMode == MD_FGDAEMON) 1310 makeworkgroups(); 1311 1312 /* set up the basic signal handlers */ 1313 if (sm_signal(SIGINT, SIG_IGN) != SIG_IGN) 1314 (void) sm_signal(SIGINT, intsig); 1315 (void) sm_signal(SIGTERM, intsig); 1316 1317 /* Enforce use of local time (null string overrides this) */ 1318 if (TimeZoneSpec == NULL) 1319 unsetenv("TZ"); 1320 else if (TimeZoneSpec[0] != '\0') 1321 sm_setuserenv("TZ", TimeZoneSpec); 1322 else 1323 sm_setuserenv("TZ", NULL); 1324 tzset(); 1325 1326 /* initialize mailbox database */ 1327 i = sm_mbdb_initialize(Mbdb); 1328 if (i != EX_OK) 1329 { 1330 usrerr("Can't initialize mailbox database \"%s\": %s", 1331 Mbdb, sm_strexit(i)); 1332 ExitStat = i; 1333 } 1334 1335 /* avoid denial-of-service attacks */ 1336 resetlimits(); 1337 1338 if (OpMode == MD_TEST) 1339 { 1340 /* can't be done after readcf if RunAs* is used */ 1341 dp = drop_privileges(true); 1342 if (dp != EX_OK) 1343 { 1344 finis(false, true, dp); 1345 /* NOTREACHED */ 1346 } 1347 } 1348 else if (OpMode != MD_DAEMON && OpMode != MD_FGDAEMON) 1349 { 1350 /* drop privileges -- daemon mode done after socket/bind */ 1351 dp = drop_privileges(false); 1352 setstat(dp); 1353 if (dp == EX_OK && UseMSP && (geteuid() == 0 || getuid() == 0)) 1354 { 1355 usrerr("Mail submission program must have RunAsUser set to non root user"); 1356 finis(false, true, EX_CONFIG); 1357 /* NOTREACHED */ 1358 } 1359 } 1360 1361 #if NAMED_BIND 1362 _res.retry = TimeOuts.res_retry[RES_TO_DEFAULT]; 1363 _res.retrans = TimeOuts.res_retrans[RES_TO_DEFAULT]; 1364 #endif /* NAMED_BIND */ 1365 1366 /* 1367 ** Find our real host name for future logging. 1368 */ 1369 1370 authinfo = getauthinfo(STDIN_FILENO, &forged); 1371 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 1372 1373 /* suppress error printing if errors mailed back or whatever */ 1374 if (BlankEnvelope.e_errormode != EM_PRINT) 1375 HoldErrs = true; 1376 1377 /* set up the $=m class now, after .cf has a chance to redefine $m */ 1378 expand("\201m", jbuf, sizeof jbuf, &BlankEnvelope); 1379 if (jbuf[0] != '\0') 1380 setclass('m', jbuf); 1381 1382 /* probe interfaces and locate any additional names */ 1383 if (DontProbeInterfaces != DPI_PROBENONE) 1384 load_if_names(); 1385 1386 if (tTd(0, 10)) 1387 { 1388 char pidpath[MAXPATHLEN]; 1389 1390 /* Now we know which .cf file we use */ 1391 sm_dprintf(" Conf file:\t%s (selected)\n", 1392 getcfname(OpMode, SubmitMode, cftype, conffile)); 1393 expand(PidFile, pidpath, sizeof pidpath, &BlankEnvelope); 1394 sm_dprintf(" Pid file:\t%s (selected)\n", pidpath); 1395 } 1396 1397 if (tTd(0, 1)) 1398 { 1399 sm_dprintf("\n============ SYSTEM IDENTITY (after readcf) ============"); 1400 sm_dprintf("\n (short domain name) $w = "); 1401 xputs(sm_debug_file(), macvalue('w', &BlankEnvelope)); 1402 sm_dprintf("\n (canonical domain name) $j = "); 1403 xputs(sm_debug_file(), macvalue('j', &BlankEnvelope)); 1404 sm_dprintf("\n (subdomain name) $m = "); 1405 xputs(sm_debug_file(), macvalue('m', &BlankEnvelope)); 1406 sm_dprintf("\n (node name) $k = "); 1407 xputs(sm_debug_file(), macvalue('k', &BlankEnvelope)); 1408 sm_dprintf("\n========================================================\n\n"); 1409 } 1410 1411 /* 1412 ** Do more command line checking -- these are things that 1413 ** have to modify the results of reading the config file. 1414 */ 1415 1416 /* process authorization warnings from command line */ 1417 if (warn_C_flag) 1418 auth_warning(&BlankEnvelope, "Processed by %s with -C %s", 1419 RealUserName, conffile); 1420 if (Warn_Q_option && !wordinclass(RealUserName, 't')) 1421 auth_warning(&BlankEnvelope, "Processed from queue %s", 1422 QueueDir); 1423 if (sysloglabel != NULL && !wordinclass(RealUserName, 't') && 1424 RealUid != 0 && RealUid != TrustedUid && LogLevel > 1) 1425 sm_syslog(LOG_WARNING, NOQID, "user %d changed syslog label", 1426 (int) RealUid); 1427 1428 /* check body type for legality */ 1429 i = check_bodytype(BlankEnvelope.e_bodytype); 1430 if (i == BODYTYPE_ILLEGAL) 1431 { 1432 usrerr("Illegal body type %s", BlankEnvelope.e_bodytype); 1433 BlankEnvelope.e_bodytype = NULL; 1434 } 1435 else if (i != BODYTYPE_NONE) 1436 SevenBitInput = (i == BODYTYPE_7BIT); 1437 1438 /* tweak default DSN notifications */ 1439 if (DefaultNotify == 0) 1440 DefaultNotify = QPINGONFAILURE|QPINGONDELAY; 1441 1442 /* check for sane configuration level */ 1443 if (ConfigLevel > MAXCONFIGLEVEL) 1444 { 1445 syserr("Warning: .cf version level (%d) exceeds sendmail version %s functionality (%d)", 1446 ConfigLevel, Version, MAXCONFIGLEVEL); 1447 } 1448 1449 /* need MCI cache to have persistence */ 1450 if (HostStatDir != NULL && MaxMciCache == 0) 1451 { 1452 HostStatDir = NULL; 1453 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1454 "Warning: HostStatusDirectory disabled with ConnectionCacheSize = 0\n"); 1455 } 1456 1457 /* need HostStatusDir in order to have SingleThreadDelivery */ 1458 if (SingleThreadDelivery && HostStatDir == NULL) 1459 { 1460 SingleThreadDelivery = false; 1461 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1462 "Warning: HostStatusDirectory required for SingleThreadDelivery\n"); 1463 } 1464 1465 #if _FFR_MEMSTAT 1466 j = sm_memstat_open(); 1467 if (j < 0 && (RefuseLowMem > 0 || QueueLowMem > 0) && LogLevel > 4) 1468 { 1469 sm_syslog(LOG_WARNING, NOQID, 1470 "cannot get memory statistics, settings ignored, error=%d" 1471 , j); 1472 } 1473 #endif /* _FFR_MEMSTAT */ 1474 1475 /* check for permissions */ 1476 if (RealUid != 0 && 1477 RealUid != TrustedUid) 1478 { 1479 char *action = NULL; 1480 1481 switch (OpMode) 1482 { 1483 case MD_QUEUERUN: 1484 if (quarantining != NULL) 1485 action = "quarantine jobs"; 1486 else 1487 { 1488 /* Normal users can do a single queue run */ 1489 if (QueueIntvl == 0) 1490 break; 1491 } 1492 1493 /* but not persistent queue runners */ 1494 if (action == NULL) 1495 action = "start a queue runner daemon"; 1496 /* FALLTHROUGH */ 1497 1498 case MD_PURGESTAT: 1499 if (action == NULL) 1500 action = "purge host status"; 1501 /* FALLTHROUGH */ 1502 1503 case MD_DAEMON: 1504 case MD_FGDAEMON: 1505 if (action == NULL) 1506 action = "run daemon"; 1507 1508 if (tTd(65, 1)) 1509 sm_dprintf("Deny user %d attempt to %s\n", 1510 (int) RealUid, action); 1511 1512 if (LogLevel > 1) 1513 sm_syslog(LOG_ALERT, NOQID, 1514 "user %d attempted to %s", 1515 (int) RealUid, action); 1516 HoldErrs = false; 1517 usrerr("Permission denied (real uid not trusted)"); 1518 finis(false, true, EX_USAGE); 1519 /* NOTREACHED */ 1520 break; 1521 1522 case MD_VERIFY: 1523 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags)) 1524 { 1525 /* 1526 ** If -bv and RestrictExpand, 1527 ** drop privs to prevent normal 1528 ** users from reading private 1529 ** aliases/forwards/:include:s 1530 */ 1531 1532 if (tTd(65, 1)) 1533 sm_dprintf("Drop privs for user %d attempt to expand (RestrictExpand)\n", 1534 (int) RealUid); 1535 1536 dp = drop_privileges(true); 1537 1538 /* Fake address safety */ 1539 if (tTd(65, 1)) 1540 sm_dprintf("Faking DontBlameSendmail=NonRootSafeAddr\n"); 1541 setbitn(DBS_NONROOTSAFEADDR, DontBlameSendmail); 1542 1543 if (dp != EX_OK) 1544 { 1545 if (tTd(65, 1)) 1546 sm_dprintf("Failed to drop privs for user %d attempt to expand, exiting\n", 1547 (int) RealUid); 1548 CurEnv->e_id = NULL; 1549 finis(true, true, dp); 1550 /* NOTREACHED */ 1551 } 1552 } 1553 break; 1554 1555 case MD_TEST: 1556 case MD_PRINT: 1557 case MD_PRINTNQE: 1558 case MD_FREEZE: 1559 case MD_HOSTSTAT: 1560 /* Nothing special to check */ 1561 break; 1562 1563 case MD_INITALIAS: 1564 if (!wordinclass(RealUserName, 't')) 1565 { 1566 if (tTd(65, 1)) 1567 sm_dprintf("Deny user %d attempt to rebuild the alias map\n", 1568 (int) RealUid); 1569 if (LogLevel > 1) 1570 sm_syslog(LOG_ALERT, NOQID, 1571 "user %d attempted to rebuild the alias map", 1572 (int) RealUid); 1573 HoldErrs = false; 1574 usrerr("Permission denied (real uid not trusted)"); 1575 finis(false, true, EX_USAGE); 1576 /* NOTREACHED */ 1577 } 1578 if (UseMSP) 1579 { 1580 HoldErrs = false; 1581 usrerr("User %d cannot rebuild aliases in mail submission program", 1582 (int) RealUid); 1583 finis(false, true, EX_USAGE); 1584 /* NOTREACHED */ 1585 } 1586 /* FALLTHROUGH */ 1587 1588 default: 1589 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags) && 1590 Verbose != 0) 1591 { 1592 /* 1593 ** If -v and RestrictExpand, reset 1594 ** Verbose to prevent normal users 1595 ** from seeing the expansion of 1596 ** aliases/forwards/:include:s 1597 */ 1598 1599 if (tTd(65, 1)) 1600 sm_dprintf("Dropping verbosity for user %d (RestrictExpand)\n", 1601 (int) RealUid); 1602 Verbose = 0; 1603 } 1604 break; 1605 } 1606 } 1607 1608 if (MeToo) 1609 BlankEnvelope.e_flags |= EF_METOO; 1610 1611 switch (OpMode) 1612 { 1613 case MD_TEST: 1614 /* don't have persistent host status in test mode */ 1615 HostStatDir = NULL; 1616 if (Verbose == 0) 1617 Verbose = 2; 1618 BlankEnvelope.e_errormode = EM_PRINT; 1619 HoldErrs = false; 1620 break; 1621 1622 case MD_VERIFY: 1623 BlankEnvelope.e_errormode = EM_PRINT; 1624 HoldErrs = false; 1625 /* arrange to exit cleanly on hangup signal */ 1626 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL) 1627 (void) sm_signal(SIGHUP, intsig); 1628 if (geteuid() != 0) 1629 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1630 "Notice: -bv may give misleading output for non-privileged user\n"); 1631 break; 1632 1633 case MD_FGDAEMON: 1634 run_in_foreground = true; 1635 set_op_mode(MD_DAEMON); 1636 /* FALLTHROUGH */ 1637 1638 case MD_DAEMON: 1639 vendor_daemon_setup(&BlankEnvelope); 1640 1641 /* remove things that don't make sense in daemon mode */ 1642 FullName = NULL; 1643 GrabTo = false; 1644 1645 /* arrange to restart on hangup signal */ 1646 if (SaveArgv[0] == NULL || SaveArgv[0][0] != '/') 1647 sm_syslog(LOG_WARNING, NOQID, 1648 "daemon invoked without full pathname; kill -1 won't work"); 1649 break; 1650 1651 case MD_INITALIAS: 1652 Verbose = 2; 1653 BlankEnvelope.e_errormode = EM_PRINT; 1654 HoldErrs = false; 1655 /* FALLTHROUGH */ 1656 1657 default: 1658 /* arrange to exit cleanly on hangup signal */ 1659 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL) 1660 (void) sm_signal(SIGHUP, intsig); 1661 break; 1662 } 1663 1664 /* special considerations for FullName */ 1665 if (FullName != NULL) 1666 { 1667 char *full = NULL; 1668 1669 /* full names can't have newlines */ 1670 if (strchr(FullName, '\n') != NULL) 1671 { 1672 full = newstr(denlstring(FullName, true, true)); 1673 FullName = full; 1674 } 1675 1676 /* check for characters that may have to be quoted */ 1677 if (!rfc822_string(FullName)) 1678 { 1679 /* 1680 ** Quote a full name with special characters 1681 ** as a comment so crackaddr() doesn't destroy 1682 ** the name portion of the address. 1683 */ 1684 1685 FullName = addquotes(FullName, NULL); 1686 if (full != NULL) 1687 sm_free(full); /* XXX */ 1688 } 1689 } 1690 1691 /* do heuristic mode adjustment */ 1692 if (Verbose) 1693 { 1694 /* turn off noconnect option */ 1695 setoption('c', "F", true, false, &BlankEnvelope); 1696 1697 /* turn on interactive delivery */ 1698 setoption('d', "", true, false, &BlankEnvelope); 1699 } 1700 1701 #ifdef VENDOR_CODE 1702 /* check for vendor mismatch */ 1703 if (VendorCode != VENDOR_CODE) 1704 { 1705 message("Warning: .cf file vendor code mismatch: sendmail expects vendor %s, .cf file vendor is %s", 1706 getvendor(VENDOR_CODE), getvendor(VendorCode)); 1707 } 1708 #endif /* VENDOR_CODE */ 1709 1710 /* check for out of date configuration level */ 1711 if (ConfigLevel < MAXCONFIGLEVEL) 1712 { 1713 message("Warning: .cf file is out of date: sendmail %s supports version %d, .cf file is version %d", 1714 Version, MAXCONFIGLEVEL, ConfigLevel); 1715 } 1716 1717 if (ConfigLevel < 3) 1718 UseErrorsTo = true; 1719 1720 /* set options that were previous macros */ 1721 if (SmtpGreeting == NULL) 1722 { 1723 if (ConfigLevel < 7 && 1724 (p = macvalue('e', &BlankEnvelope)) != NULL) 1725 SmtpGreeting = newstr(p); 1726 else 1727 SmtpGreeting = "\201j Sendmail \201v ready at \201b"; 1728 } 1729 if (UnixFromLine == NULL) 1730 { 1731 if (ConfigLevel < 7 && 1732 (p = macvalue('l', &BlankEnvelope)) != NULL) 1733 UnixFromLine = newstr(p); 1734 else 1735 UnixFromLine = "From \201g \201d"; 1736 } 1737 SmtpError[0] = '\0'; 1738 1739 /* our name for SMTP codes */ 1740 expand("\201j", jbuf, sizeof jbuf, &BlankEnvelope); 1741 if (jbuf[0] == '\0') 1742 PSTRSET(MyHostName, "localhost"); 1743 else 1744 PSTRSET(MyHostName, jbuf); 1745 if (strchr(MyHostName, '.') == NULL) 1746 message("WARNING: local host name (%s) is not qualified; see cf/README: WHO AM I?", 1747 MyHostName); 1748 1749 /* make certain that this name is part of the $=w class */ 1750 setclass('w', MyHostName); 1751 1752 /* fill in the structure of the *default* queue */ 1753 st = stab("mqueue", ST_QUEUE, ST_FIND); 1754 if (st == NULL) 1755 syserr("No default queue (mqueue) defined"); 1756 else 1757 set_def_queueval(st->s_quegrp, true); 1758 1759 /* the indices of built-in mailers */ 1760 st = stab("local", ST_MAILER, ST_FIND); 1761 if (st != NULL) 1762 LocalMailer = st->s_mailer; 1763 else if (OpMode != MD_TEST || !warn_C_flag) 1764 syserr("No local mailer defined"); 1765 1766 st = stab("prog", ST_MAILER, ST_FIND); 1767 if (st == NULL) 1768 syserr("No prog mailer defined"); 1769 else 1770 { 1771 ProgMailer = st->s_mailer; 1772 clrbitn(M_MUSER, ProgMailer->m_flags); 1773 } 1774 1775 st = stab("*file*", ST_MAILER, ST_FIND); 1776 if (st == NULL) 1777 syserr("No *file* mailer defined"); 1778 else 1779 { 1780 FileMailer = st->s_mailer; 1781 clrbitn(M_MUSER, FileMailer->m_flags); 1782 } 1783 1784 st = stab("*include*", ST_MAILER, ST_FIND); 1785 if (st == NULL) 1786 syserr("No *include* mailer defined"); 1787 else 1788 InclMailer = st->s_mailer; 1789 1790 if (ConfigLevel < 6) 1791 { 1792 /* heuristic tweaking of local mailer for back compat */ 1793 if (LocalMailer != NULL) 1794 { 1795 setbitn(M_ALIASABLE, LocalMailer->m_flags); 1796 setbitn(M_HASPWENT, LocalMailer->m_flags); 1797 setbitn(M_TRYRULESET5, LocalMailer->m_flags); 1798 setbitn(M_CHECKINCLUDE, LocalMailer->m_flags); 1799 setbitn(M_CHECKPROG, LocalMailer->m_flags); 1800 setbitn(M_CHECKFILE, LocalMailer->m_flags); 1801 setbitn(M_CHECKUDB, LocalMailer->m_flags); 1802 } 1803 if (ProgMailer != NULL) 1804 setbitn(M_RUNASRCPT, ProgMailer->m_flags); 1805 if (FileMailer != NULL) 1806 setbitn(M_RUNASRCPT, FileMailer->m_flags); 1807 } 1808 if (ConfigLevel < 7) 1809 { 1810 if (LocalMailer != NULL) 1811 setbitn(M_VRFY250, LocalMailer->m_flags); 1812 if (ProgMailer != NULL) 1813 setbitn(M_VRFY250, ProgMailer->m_flags); 1814 if (FileMailer != NULL) 1815 setbitn(M_VRFY250, FileMailer->m_flags); 1816 } 1817 1818 /* MIME Content-Types that cannot be transfer encoded */ 1819 setclass('n', "multipart/signed"); 1820 1821 /* MIME message/xxx subtypes that can be treated as messages */ 1822 setclass('s', "rfc822"); 1823 1824 /* MIME Content-Transfer-Encodings that can be encoded */ 1825 setclass('e', "7bit"); 1826 setclass('e', "8bit"); 1827 setclass('e', "binary"); 1828 1829 #ifdef USE_B_CLASS 1830 /* MIME Content-Types that should be treated as binary */ 1831 setclass('b', "image"); 1832 setclass('b', "audio"); 1833 setclass('b', "video"); 1834 setclass('b', "application/octet-stream"); 1835 #endif /* USE_B_CLASS */ 1836 1837 /* MIME headers which have fields to check for overflow */ 1838 setclass(macid("{checkMIMEFieldHeaders}"), "content-disposition"); 1839 setclass(macid("{checkMIMEFieldHeaders}"), "content-type"); 1840 1841 /* MIME headers to check for length overflow */ 1842 setclass(macid("{checkMIMETextHeaders}"), "content-description"); 1843 1844 /* MIME headers to check for overflow and rebalance */ 1845 setclass(macid("{checkMIMEHeaders}"), "content-disposition"); 1846 setclass(macid("{checkMIMEHeaders}"), "content-id"); 1847 setclass(macid("{checkMIMEHeaders}"), "content-transfer-encoding"); 1848 setclass(macid("{checkMIMEHeaders}"), "content-type"); 1849 setclass(macid("{checkMIMEHeaders}"), "mime-version"); 1850 1851 /* Macros to save in the queue file -- don't remove any */ 1852 setclass(macid("{persistentMacros}"), "r"); 1853 setclass(macid("{persistentMacros}"), "s"); 1854 setclass(macid("{persistentMacros}"), "_"); 1855 setclass(macid("{persistentMacros}"), "{if_addr}"); 1856 setclass(macid("{persistentMacros}"), "{daemon_flags}"); 1857 1858 /* operate in queue directory */ 1859 if (QueueDir == NULL || *QueueDir == '\0') 1860 { 1861 if (OpMode != MD_TEST) 1862 { 1863 syserr("QueueDirectory (Q) option must be set"); 1864 ExitStat = EX_CONFIG; 1865 } 1866 } 1867 else 1868 { 1869 if (OpMode != MD_TEST) 1870 setup_queues(OpMode == MD_DAEMON); 1871 } 1872 1873 /* check host status directory for validity */ 1874 if (HostStatDir != NULL && !path_is_dir(HostStatDir, false)) 1875 { 1876 /* cannot use this value */ 1877 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1878 "Warning: Cannot use HostStatusDirectory = %s: %s\n", 1879 HostStatDir, sm_errstring(errno)); 1880 HostStatDir = NULL; 1881 } 1882 1883 if (OpMode == MD_QUEUERUN && 1884 RealUid != 0 && bitset(PRIV_RESTRICTQRUN, PrivacyFlags)) 1885 { 1886 struct stat stbuf; 1887 1888 /* check to see if we own the queue directory */ 1889 if (stat(".", &stbuf) < 0) 1890 syserr("main: cannot stat %s", QueueDir); 1891 if (stbuf.st_uid != RealUid) 1892 { 1893 /* nope, really a botch */ 1894 HoldErrs = false; 1895 usrerr("You do not have permission to process the queue"); 1896 finis(false, true, EX_NOPERM); 1897 /* NOTREACHED */ 1898 } 1899 } 1900 1901 #if MILTER 1902 /* sanity checks on milter filters */ 1903 if (OpMode == MD_DAEMON || OpMode == MD_SMTP) 1904 { 1905 milter_config(InputFilterList, InputFilters, MAXFILTERS); 1906 setup_daemon_milters(); 1907 } 1908 #endif /* MILTER */ 1909 1910 /* Convert queuegroup string to qgrp number */ 1911 if (queuegroup != NULL) 1912 { 1913 qgrp = name2qid(queuegroup); 1914 if (qgrp == NOQGRP) 1915 { 1916 HoldErrs = false; 1917 usrerr("Queue group %s unknown", queuegroup); 1918 finis(false, true, ExitStat); 1919 /* NOTREACHED */ 1920 } 1921 } 1922 1923 /* if we've had errors so far, exit now */ 1924 if (ExitStat != EX_OK && OpMode != MD_TEST) 1925 { 1926 finis(false, true, ExitStat); 1927 /* NOTREACHED */ 1928 } 1929 1930 #if SASL 1931 /* sendmail specific SASL initialization */ 1932 sm_sasl_init(); 1933 #endif /* SASL */ 1934 1935 #if XDEBUG 1936 checkfd012("before main() initmaps"); 1937 #endif /* XDEBUG */ 1938 1939 /* 1940 ** Do operation-mode-dependent initialization. 1941 */ 1942 1943 switch (OpMode) 1944 { 1945 case MD_PRINT: 1946 /* print the queue */ 1947 HoldErrs = false; 1948 dropenvelope(&BlankEnvelope, true, false); 1949 (void) sm_signal(SIGPIPE, sigpipe); 1950 if (qgrp != NOQGRP) 1951 { 1952 int j; 1953 1954 /* Selecting a particular queue group to run */ 1955 for (j = 0; j < Queue[qgrp]->qg_numqueues; j++) 1956 { 1957 if (StopRequest) 1958 stop_sendmail(); 1959 (void) print_single_queue(qgrp, j); 1960 } 1961 finis(false, true, EX_OK); 1962 /* NOTREACHED */ 1963 } 1964 printqueue(); 1965 finis(false, true, EX_OK); 1966 /* NOTREACHED */ 1967 break; 1968 1969 case MD_PRINTNQE: 1970 /* print number of entries in queue */ 1971 dropenvelope(&BlankEnvelope, true, false); 1972 (void) sm_signal(SIGPIPE, sigpipe); 1973 printnqe(smioout, NULL); 1974 finis(false, true, EX_OK); 1975 /* NOTREACHED */ 1976 break; 1977 1978 case MD_QUEUERUN: 1979 /* only handle quarantining here */ 1980 if (quarantining == NULL) 1981 break; 1982 1983 if (QueueMode != QM_QUARANTINE && 1984 QueueMode != QM_NORMAL) 1985 { 1986 HoldErrs = false; 1987 usrerr("Can not use -Q with -q%c", QueueMode); 1988 ExitStat = EX_USAGE; 1989 finis(false, true, ExitStat); 1990 /* NOTREACHED */ 1991 } 1992 quarantine_queue(quarantining, qgrp); 1993 finis(false, true, EX_OK); 1994 break; 1995 1996 case MD_HOSTSTAT: 1997 (void) sm_signal(SIGPIPE, sigpipe); 1998 (void) mci_traverse_persistent(mci_print_persistent, NULL); 1999 finis(false, true, EX_OK); 2000 /* NOTREACHED */ 2001 break; 2002 2003 case MD_PURGESTAT: 2004 (void) mci_traverse_persistent(mci_purge_persistent, NULL); 2005 finis(false, true, EX_OK); 2006 /* NOTREACHED */ 2007 break; 2008 2009 case MD_INITALIAS: 2010 /* initialize maps */ 2011 initmaps(); 2012 finis(false, true, ExitStat); 2013 /* NOTREACHED */ 2014 break; 2015 2016 case MD_SMTP: 2017 case MD_DAEMON: 2018 /* reset DSN parameters */ 2019 DefaultNotify = QPINGONFAILURE|QPINGONDELAY; 2020 macdefine(&BlankEnvelope.e_macro, A_PERM, 2021 macid("{dsn_notify}"), NULL); 2022 BlankEnvelope.e_envid = NULL; 2023 macdefine(&BlankEnvelope.e_macro, A_PERM, 2024 macid("{dsn_envid}"), NULL); 2025 BlankEnvelope.e_flags &= ~(EF_RET_PARAM|EF_NO_BODY_RETN); 2026 macdefine(&BlankEnvelope.e_macro, A_PERM, 2027 macid("{dsn_ret}"), NULL); 2028 2029 /* don't open maps for daemon -- done below in child */ 2030 break; 2031 } 2032 2033 if (tTd(0, 15)) 2034 { 2035 /* print configuration table (or at least part of it) */ 2036 if (tTd(0, 90)) 2037 printrules(); 2038 for (i = 0; i < MAXMAILERS; i++) 2039 { 2040 if (Mailer[i] != NULL) 2041 printmailer(sm_debug_file(), Mailer[i]); 2042 } 2043 } 2044 2045 /* 2046 ** Switch to the main envelope. 2047 */ 2048 2049 CurEnv = newenvelope(&MainEnvelope, &BlankEnvelope, 2050 sm_rpool_new_x(NULL)); 2051 MainEnvelope.e_flags = BlankEnvelope.e_flags; 2052 2053 /* 2054 ** If test mode, read addresses from stdin and process. 2055 */ 2056 2057 if (OpMode == MD_TEST) 2058 { 2059 if (isatty(sm_io_getinfo(smioin, SM_IO_WHAT_FD, NULL))) 2060 Verbose = 2; 2061 2062 if (Verbose) 2063 { 2064 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2065 "ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n"); 2066 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2067 "Enter <ruleset> <address>\n"); 2068 } 2069 macdefine(&(MainEnvelope.e_macro), A_PERM, 2070 macid("{addr_type}"), "e r"); 2071 for (;;) 2072 { 2073 SM_TRY 2074 { 2075 (void) sm_signal(SIGINT, intindebug); 2076 (void) sm_releasesignal(SIGINT); 2077 if (Verbose == 2) 2078 (void) sm_io_fprintf(smioout, 2079 SM_TIME_DEFAULT, 2080 "> "); 2081 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 2082 if (sm_io_fgets(smioin, SM_TIME_DEFAULT, buf, 2083 sizeof buf) == NULL) 2084 testmodeline("/quit", &MainEnvelope); 2085 p = strchr(buf, '\n'); 2086 if (p != NULL) 2087 *p = '\0'; 2088 if (Verbose < 2) 2089 (void) sm_io_fprintf(smioout, 2090 SM_TIME_DEFAULT, 2091 "> %s\n", buf); 2092 testmodeline(buf, &MainEnvelope); 2093 } 2094 SM_EXCEPT(exc, "[!F]*") 2095 { 2096 /* 2097 ** 8.10 just prints \n on interrupt. 2098 ** I'm printing the exception here in case 2099 ** sendmail is extended to raise additional 2100 ** exceptions in this context. 2101 */ 2102 2103 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2104 "\n"); 2105 sm_exc_print(exc, smioout); 2106 } 2107 SM_END_TRY 2108 } 2109 } 2110 2111 #if STARTTLS 2112 tls_ok = true; 2113 if (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER) 2114 { 2115 /* check whether STARTTLS is turned off for the client */ 2116 if (chkclientmodifiers(D_NOTLS)) 2117 tls_ok = false; 2118 } 2119 else if (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON || 2120 OpMode == MD_SMTP) 2121 { 2122 /* check whether STARTTLS is turned off for the server */ 2123 if (chkdaemonmodifiers(D_NOTLS)) 2124 tls_ok = false; 2125 } 2126 else /* other modes don't need STARTTLS */ 2127 tls_ok = false; 2128 2129 if (tls_ok) 2130 { 2131 /* basic TLS initialization */ 2132 tls_ok = init_tls_library(); 2133 } 2134 2135 if (!tls_ok && (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER)) 2136 { 2137 /* disable TLS for client */ 2138 setclttls(false); 2139 } 2140 #endif /* STARTTLS */ 2141 2142 /* 2143 ** If collecting stuff from the queue, go start doing that. 2144 */ 2145 2146 if (OpMode == MD_QUEUERUN && QueueIntvl == 0) 2147 { 2148 pid_t pid = -1; 2149 2150 #if STARTTLS 2151 /* init TLS for client, ignore result for now */ 2152 (void) initclttls(tls_ok); 2153 #endif /* STARTTLS */ 2154 2155 /* 2156 ** The parent process of the caller of runqueue() needs 2157 ** to stay around for a possible SIGTERM. The SIGTERM will 2158 ** tell this process that all of the queue runners children 2159 ** need to be sent SIGTERM as well. At the same time, we 2160 ** want to return control to the command line. So we do an 2161 ** extra fork(). 2162 */ 2163 2164 if (Verbose || foregroundqueue || (pid = fork()) <= 0) 2165 { 2166 /* 2167 ** If the fork() failed we should still try to do 2168 ** the queue run. If it succeeded then the child 2169 ** is going to start the run and wait for all 2170 ** of the children to finish. 2171 */ 2172 2173 if (pid == 0) 2174 { 2175 /* Reset global flags */ 2176 RestartRequest = NULL; 2177 ShutdownRequest = NULL; 2178 PendingSignal = 0; 2179 2180 /* disconnect from terminal */ 2181 disconnect(2, CurEnv); 2182 } 2183 2184 CurrentPid = getpid(); 2185 if (qgrp != NOQGRP) 2186 { 2187 int rwgflags = RWG_NONE; 2188 2189 /* 2190 ** To run a specific queue group mark it to 2191 ** be run, select the work group it's in and 2192 ** increment the work counter. 2193 */ 2194 2195 for (i = 0; i < NumQueue && Queue[i] != NULL; 2196 i++) 2197 Queue[i]->qg_nextrun = (time_t) -1; 2198 Queue[qgrp]->qg_nextrun = 0; 2199 if (Verbose) 2200 rwgflags |= RWG_VERBOSE; 2201 if (queuepersistent) 2202 rwgflags |= RWG_PERSISTENT; 2203 rwgflags |= RWG_FORCE; 2204 (void) run_work_group(Queue[qgrp]->qg_wgrp, 2205 rwgflags); 2206 } 2207 else 2208 (void) runqueue(false, Verbose, 2209 queuepersistent, true); 2210 2211 /* set the title to make it easier to find */ 2212 sm_setproctitle(true, CurEnv, "Queue control"); 2213 (void) sm_signal(SIGCHLD, SIG_DFL); 2214 while (CurChildren > 0) 2215 { 2216 int status; 2217 pid_t ret; 2218 2219 errno = 0; 2220 while ((ret = sm_wait(&status)) <= 0) 2221 { 2222 if (errno == ECHILD) 2223 { 2224 /* 2225 ** Oops... something got messed 2226 ** up really bad. Waiting for 2227 ** non-existent children 2228 ** shouldn't happen. Let's get 2229 ** out of here. 2230 */ 2231 2232 CurChildren = 0; 2233 break; 2234 } 2235 continue; 2236 } 2237 2238 /* something is really really wrong */ 2239 if (errno == ECHILD) 2240 { 2241 sm_syslog(LOG_ERR, NOQID, 2242 "queue control process: lost all children: wait returned ECHILD"); 2243 break; 2244 } 2245 2246 /* Only drop when a child gives status */ 2247 if (WIFSTOPPED(status)) 2248 continue; 2249 2250 proc_list_drop(ret, status, NULL); 2251 } 2252 } 2253 finis(true, true, ExitStat); 2254 /* NOTREACHED */ 2255 } 2256 2257 # if SASL 2258 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2259 { 2260 /* check whether AUTH is turned off for the server */ 2261 if (!chkdaemonmodifiers(D_NOAUTH) && 2262 (i = sasl_server_init(srvcallbacks, "Sendmail")) != SASL_OK) 2263 syserr("!sasl_server_init failed! [%s]", 2264 sasl_errstring(i, NULL, NULL)); 2265 } 2266 # endif /* SASL */ 2267 2268 if (OpMode == MD_SMTP) 2269 { 2270 proc_list_add(CurrentPid, "Sendmail SMTP Agent", 2271 PROC_DAEMON, 0, -1, NULL); 2272 2273 /* clean up background delivery children */ 2274 (void) sm_signal(SIGCHLD, reapchild); 2275 } 2276 2277 /* 2278 ** If a daemon, wait for a request. 2279 ** getrequests will always return in a child. 2280 ** If we should also be processing the queue, start 2281 ** doing it in background. 2282 ** We check for any errors that might have happened 2283 ** during startup. 2284 */ 2285 2286 if (OpMode == MD_DAEMON || QueueIntvl > 0) 2287 { 2288 char dtype[200]; 2289 2290 if (!run_in_foreground && !tTd(99, 100)) 2291 { 2292 /* put us in background */ 2293 i = fork(); 2294 if (i < 0) 2295 syserr("daemon: cannot fork"); 2296 if (i != 0) 2297 { 2298 finis(false, true, EX_OK); 2299 /* NOTREACHED */ 2300 } 2301 2302 /* 2303 ** Initialize exception stack and default exception 2304 ** handler for child process. 2305 */ 2306 2307 /* Reset global flags */ 2308 RestartRequest = NULL; 2309 RestartWorkGroup = false; 2310 ShutdownRequest = NULL; 2311 PendingSignal = 0; 2312 CurrentPid = getpid(); 2313 2314 sm_exc_newthread(fatal_error); 2315 2316 /* disconnect from our controlling tty */ 2317 disconnect(2, &MainEnvelope); 2318 } 2319 2320 dtype[0] = '\0'; 2321 if (OpMode == MD_DAEMON) 2322 { 2323 (void) sm_strlcat(dtype, "+SMTP", sizeof dtype); 2324 DaemonPid = CurrentPid; 2325 } 2326 if (QueueIntvl > 0) 2327 { 2328 (void) sm_strlcat2(dtype, 2329 queuepersistent 2330 ? "+persistent-queueing@" 2331 : "+queueing@", 2332 pintvl(QueueIntvl, true), 2333 sizeof dtype); 2334 } 2335 if (tTd(0, 1)) 2336 (void) sm_strlcat(dtype, "+debugging", sizeof dtype); 2337 2338 sm_syslog(LOG_INFO, NOQID, 2339 "starting daemon (%s): %s", Version, dtype + 1); 2340 #if XLA 2341 xla_create_file(); 2342 #endif /* XLA */ 2343 2344 /* save daemon type in a macro for possible PidFile use */ 2345 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2346 macid("{daemon_info}"), dtype + 1); 2347 2348 /* save queue interval in a macro for possible PidFile use */ 2349 macdefine(&MainEnvelope.e_macro, A_TEMP, 2350 macid("{queue_interval}"), pintvl(QueueIntvl, true)); 2351 2352 /* workaround: can't seem to release the signal in the parent */ 2353 (void) sm_signal(SIGHUP, sighup); 2354 (void) sm_releasesignal(SIGHUP); 2355 (void) sm_signal(SIGTERM, sigterm); 2356 2357 if (QueueIntvl > 0) 2358 { 2359 (void) runqueue(true, false, queuepersistent, true); 2360 2361 /* 2362 ** If queuepersistent but not in daemon mode then 2363 ** we're going to do the queue runner monitoring here. 2364 ** If in daemon mode then the monitoring will happen 2365 ** elsewhere. 2366 */ 2367 2368 if (OpMode != MD_DAEMON && queuepersistent) 2369 { 2370 /* 2371 ** Write the pid to file 2372 ** XXX Overwrites sendmail.pid 2373 */ 2374 2375 log_sendmail_pid(&MainEnvelope); 2376 2377 /* set the title to make it easier to find */ 2378 sm_setproctitle(true, CurEnv, "Queue control"); 2379 (void) sm_signal(SIGCHLD, SIG_DFL); 2380 while (CurChildren > 0) 2381 { 2382 int status; 2383 pid_t ret; 2384 int group; 2385 2386 CHECK_RESTART; 2387 errno = 0; 2388 while ((ret = sm_wait(&status)) <= 0) 2389 { 2390 /* 2391 ** Waiting for non-existent 2392 ** children shouldn't happen. 2393 ** Let's get out of here if 2394 ** it occurs. 2395 */ 2396 2397 if (errno == ECHILD) 2398 { 2399 CurChildren = 0; 2400 break; 2401 } 2402 continue; 2403 } 2404 2405 /* something is really really wrong */ 2406 if (errno == ECHILD) 2407 { 2408 sm_syslog(LOG_ERR, NOQID, 2409 "persistent queue runner control process: lost all children: wait returned ECHILD"); 2410 break; 2411 } 2412 2413 if (WIFSTOPPED(status)) 2414 continue; 2415 2416 /* Probe only on a child status */ 2417 proc_list_drop(ret, status, &group); 2418 2419 if (WIFSIGNALED(status)) 2420 { 2421 if (WCOREDUMP(status)) 2422 { 2423 sm_syslog(LOG_ERR, NOQID, 2424 "persistent queue runner=%d core dumped, signal=%d", 2425 group, WTERMSIG(status)); 2426 2427 /* don't restart this */ 2428 mark_work_group_restart( 2429 group, -1); 2430 continue; 2431 } 2432 2433 sm_syslog(LOG_ERR, NOQID, 2434 "persistent queue runner=%d died, signal=%d", 2435 group, WTERMSIG(status)); 2436 } 2437 2438 /* 2439 ** When debugging active, don't 2440 ** restart the persistent queues. 2441 ** But do log this as info. 2442 */ 2443 2444 if (sm_debug_active(&DebugNoPRestart, 2445 1)) 2446 { 2447 sm_syslog(LOG_DEBUG, NOQID, 2448 "persistent queue runner=%d, exited", 2449 group); 2450 mark_work_group_restart(group, 2451 -1); 2452 } 2453 } 2454 finis(true, true, ExitStat); 2455 /* NOTREACHED */ 2456 } 2457 2458 if (OpMode != MD_DAEMON) 2459 { 2460 char qtype[200]; 2461 2462 /* 2463 ** Write the pid to file 2464 ** XXX Overwrites sendmail.pid 2465 */ 2466 2467 log_sendmail_pid(&MainEnvelope); 2468 2469 /* set the title to make it easier to find */ 2470 qtype[0] = '\0'; 2471 (void) sm_strlcpyn(qtype, sizeof qtype, 4, 2472 "Queue runner@", 2473 pintvl(QueueIntvl, true), 2474 " for ", 2475 QueueDir); 2476 sm_setproctitle(true, CurEnv, qtype); 2477 for (;;) 2478 { 2479 (void) pause(); 2480 2481 CHECK_RESTART; 2482 2483 if (doqueuerun()) 2484 (void) runqueue(true, false, 2485 false, false); 2486 } 2487 } 2488 } 2489 dropenvelope(&MainEnvelope, true, false); 2490 2491 #if STARTTLS 2492 /* init TLS for server, ignore result for now */ 2493 (void) initsrvtls(tls_ok); 2494 #endif /* STARTTLS */ 2495 2496 nextreq: 2497 p_flags = getrequests(&MainEnvelope); 2498 2499 /* drop privileges */ 2500 (void) drop_privileges(false); 2501 2502 /* 2503 ** Get authentication data 2504 ** Set _ macro in BlankEnvelope before calling newenvelope(). 2505 */ 2506 2507 authinfo = getauthinfo(sm_io_getinfo(InChannel, SM_IO_WHAT_FD, 2508 NULL), &forged); 2509 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 2510 2511 /* at this point we are in a child: reset state */ 2512 sm_rpool_free(MainEnvelope.e_rpool); 2513 (void) newenvelope(&MainEnvelope, &MainEnvelope, 2514 sm_rpool_new_x(NULL)); 2515 } 2516 2517 if (LogLevel > 9) 2518 { 2519 /* log connection information */ 2520 sm_syslog(LOG_INFO, NULL, "connect from %s", authinfo); 2521 } 2522 2523 /* 2524 ** If running SMTP protocol, start collecting and executing 2525 ** commands. This will never return. 2526 */ 2527 2528 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2529 { 2530 char pbuf[20]; 2531 2532 /* 2533 ** Save some macros for check_* rulesets. 2534 */ 2535 2536 if (forged) 2537 { 2538 char ipbuf[103]; 2539 2540 (void) sm_snprintf(ipbuf, sizeof ipbuf, "[%.100s]", 2541 anynet_ntoa(&RealHostAddr)); 2542 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2543 macid("{client_name}"), ipbuf); 2544 } 2545 else 2546 macdefine(&BlankEnvelope.e_macro, A_PERM, 2547 macid("{client_name}"), RealHostName); 2548 macdefine(&BlankEnvelope.e_macro, A_PERM, 2549 macid("{client_ptr}"), RealHostName); 2550 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2551 macid("{client_addr}"), anynet_ntoa(&RealHostAddr)); 2552 sm_getla(); 2553 2554 switch (RealHostAddr.sa.sa_family) 2555 { 2556 #if NETINET 2557 case AF_INET: 2558 (void) sm_snprintf(pbuf, sizeof pbuf, "%d", 2559 RealHostAddr.sin.sin_port); 2560 break; 2561 #endif /* NETINET */ 2562 #if NETINET6 2563 case AF_INET6: 2564 (void) sm_snprintf(pbuf, sizeof pbuf, "%d", 2565 RealHostAddr.sin6.sin6_port); 2566 break; 2567 #endif /* NETINET6 */ 2568 default: 2569 (void) sm_snprintf(pbuf, sizeof pbuf, "0"); 2570 break; 2571 } 2572 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2573 macid("{client_port}"), pbuf); 2574 2575 if (OpMode == MD_DAEMON) 2576 { 2577 /* validate the connection */ 2578 HoldErrs = true; 2579 nullserver = validate_connection(&RealHostAddr, 2580 macvalue(macid("{client_name}"), 2581 &MainEnvelope), 2582 &MainEnvelope); 2583 HoldErrs = false; 2584 } 2585 else if (p_flags == NULL) 2586 { 2587 p_flags = (BITMAP256 *) xalloc(sizeof *p_flags); 2588 clrbitmap(p_flags); 2589 } 2590 #if STARTTLS 2591 if (OpMode == MD_SMTP) 2592 (void) initsrvtls(tls_ok); 2593 #endif /* STARTTLS */ 2594 2595 /* turn off profiling */ 2596 SM_PROF(1); 2597 smtp(nullserver, *p_flags, &MainEnvelope); 2598 2599 if (tTd(93, 100)) 2600 { 2601 /* turn off profiling */ 2602 SM_PROF(0); 2603 if (OpMode == MD_DAEMON) 2604 goto nextreq; 2605 } 2606 } 2607 2608 sm_rpool_free(MainEnvelope.e_rpool); 2609 clearenvelope(&MainEnvelope, false, sm_rpool_new_x(NULL)); 2610 if (OpMode == MD_VERIFY) 2611 { 2612 set_delivery_mode(SM_VERIFY, &MainEnvelope); 2613 PostMasterCopy = NULL; 2614 } 2615 else 2616 { 2617 /* interactive -- all errors are global */ 2618 MainEnvelope.e_flags |= EF_GLOBALERRS|EF_LOGSENDER; 2619 } 2620 2621 /* 2622 ** Do basic system initialization and set the sender 2623 */ 2624 2625 initsys(&MainEnvelope); 2626 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{ntries}"), "0"); 2627 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{nrcpts}"), "0"); 2628 setsender(from, &MainEnvelope, NULL, '\0', false); 2629 if (warn_f_flag != '\0' && !wordinclass(RealUserName, 't') && 2630 (!bitnset(M_LOCALMAILER, MainEnvelope.e_from.q_mailer->m_flags) || 2631 strcmp(MainEnvelope.e_from.q_user, RealUserName) != 0)) 2632 { 2633 auth_warning(&MainEnvelope, "%s set sender to %s using -%c", 2634 RealUserName, from, warn_f_flag); 2635 #if SASL 2636 auth = false; 2637 #endif /* SASL */ 2638 } 2639 if (auth) 2640 { 2641 char *fv; 2642 2643 /* set the initial sender for AUTH= to $f@$j */ 2644 fv = macvalue('f', &MainEnvelope); 2645 if (fv == NULL || *fv == '\0') 2646 MainEnvelope.e_auth_param = NULL; 2647 else 2648 { 2649 if (strchr(fv, '@') == NULL) 2650 { 2651 i = strlen(fv) + strlen(macvalue('j', 2652 &MainEnvelope)) + 2; 2653 p = sm_malloc_x(i); 2654 (void) sm_strlcpyn(p, i, 3, fv, "@", 2655 macvalue('j', 2656 &MainEnvelope)); 2657 } 2658 else 2659 p = sm_strdup_x(fv); 2660 MainEnvelope.e_auth_param = sm_rpool_strdup_x(MainEnvelope.e_rpool, 2661 xtextify(p, "=")); 2662 sm_free(p); /* XXX */ 2663 } 2664 } 2665 if (macvalue('s', &MainEnvelope) == NULL) 2666 macdefine(&MainEnvelope.e_macro, A_PERM, 's', RealHostName); 2667 2668 av = argv + optind; 2669 if (*av == NULL && !GrabTo) 2670 { 2671 MainEnvelope.e_to = NULL; 2672 MainEnvelope.e_flags |= EF_GLOBALERRS; 2673 HoldErrs = false; 2674 SuperSafe = SAFE_NO; 2675 usrerr("Recipient names must be specified"); 2676 2677 /* collect body for UUCP return */ 2678 if (OpMode != MD_VERIFY) 2679 collect(InChannel, false, NULL, &MainEnvelope, true); 2680 finis(true, true, EX_USAGE); 2681 /* NOTREACHED */ 2682 } 2683 2684 /* 2685 ** Scan argv and deliver the message to everyone. 2686 */ 2687 2688 save_val = LogUsrErrs; 2689 LogUsrErrs = true; 2690 sendtoargv(av, &MainEnvelope); 2691 LogUsrErrs = save_val; 2692 2693 /* if we have had errors sofar, arrange a meaningful exit stat */ 2694 if (Errors > 0 && ExitStat == EX_OK) 2695 ExitStat = EX_USAGE; 2696 2697 #if _FFR_FIX_DASHT 2698 /* 2699 ** If using -t, force not sending to argv recipients, even 2700 ** if they are mentioned in the headers. 2701 */ 2702 2703 if (GrabTo) 2704 { 2705 ADDRESS *q; 2706 2707 for (q = MainEnvelope.e_sendqueue; q != NULL; q = q->q_next) 2708 q->q_state = QS_REMOVED; 2709 } 2710 #endif /* _FFR_FIX_DASHT */ 2711 2712 /* 2713 ** Read the input mail. 2714 */ 2715 2716 MainEnvelope.e_to = NULL; 2717 if (OpMode != MD_VERIFY || GrabTo) 2718 { 2719 int savederrors; 2720 unsigned long savedflags; 2721 2722 /* 2723 ** workaround for compiler warning on Irix: 2724 ** do not initialize variable in the definition, but 2725 ** later on: 2726 ** warning(1548): transfer of control bypasses 2727 ** initialization of: 2728 ** variable "savederrors" (declared at line 2570) 2729 ** variable "savedflags" (declared at line 2571) 2730 ** goto giveup; 2731 */ 2732 2733 savederrors = Errors; 2734 savedflags = MainEnvelope.e_flags & EF_FATALERRS; 2735 MainEnvelope.e_flags |= EF_GLOBALERRS; 2736 MainEnvelope.e_flags &= ~EF_FATALERRS; 2737 Errors = 0; 2738 buffer_errors(); 2739 collect(InChannel, false, NULL, &MainEnvelope, true); 2740 2741 /* header checks failed */ 2742 if (Errors > 0) 2743 { 2744 giveup: 2745 if (!GrabTo) 2746 { 2747 /* Log who the mail would have gone to */ 2748 logundelrcpts(&MainEnvelope, 2749 MainEnvelope.e_message, 2750 8, false); 2751 } 2752 flush_errors(true); 2753 finis(true, true, ExitStat); 2754 /* NOTREACHED */ 2755 return -1; 2756 } 2757 2758 /* bail out if message too large */ 2759 if (bitset(EF_CLRQUEUE, MainEnvelope.e_flags)) 2760 { 2761 finis(true, true, ExitStat != EX_OK ? ExitStat 2762 : EX_DATAERR); 2763 /* NOTREACHED */ 2764 return -1; 2765 } 2766 2767 /* set message size */ 2768 (void) sm_snprintf(buf, sizeof buf, "%ld", 2769 MainEnvelope.e_msgsize); 2770 macdefine(&MainEnvelope.e_macro, A_TEMP, 2771 macid("{msg_size}"), buf); 2772 2773 Errors = savederrors; 2774 MainEnvelope.e_flags |= savedflags; 2775 } 2776 errno = 0; 2777 2778 if (tTd(1, 1)) 2779 sm_dprintf("From person = \"%s\"\n", 2780 MainEnvelope.e_from.q_paddr); 2781 2782 /* Check if quarantining stats should be updated */ 2783 if (MainEnvelope.e_quarmsg != NULL) 2784 markstats(&MainEnvelope, NULL, STATS_QUARANTINE); 2785 2786 /* 2787 ** Actually send everything. 2788 ** If verifying, just ack. 2789 */ 2790 2791 if (Errors == 0) 2792 { 2793 if (!split_by_recipient(&MainEnvelope) && 2794 bitset(EF_FATALERRS, MainEnvelope.e_flags)) 2795 goto giveup; 2796 } 2797 2798 /* make sure we deliver at least the first envelope */ 2799 i = FastSplit > 0 ? 0 : -1; 2800 for (e = &MainEnvelope; e != NULL; e = e->e_sibling, i++) 2801 { 2802 ENVELOPE *next; 2803 2804 e->e_from.q_state = QS_SENDER; 2805 if (tTd(1, 5)) 2806 { 2807 sm_dprintf("main[%d]: QS_SENDER ", i); 2808 printaddr(sm_debug_file(), &e->e_from, false); 2809 } 2810 e->e_to = NULL; 2811 sm_getla(); 2812 GrabTo = false; 2813 #if NAMED_BIND 2814 _res.retry = TimeOuts.res_retry[RES_TO_FIRST]; 2815 _res.retrans = TimeOuts.res_retrans[RES_TO_FIRST]; 2816 #endif /* NAMED_BIND */ 2817 next = e->e_sibling; 2818 e->e_sibling = NULL; 2819 2820 /* after FastSplit envelopes: queue up */ 2821 sendall(e, i >= FastSplit ? SM_QUEUE : SM_DEFAULT); 2822 e->e_sibling = next; 2823 } 2824 2825 /* 2826 ** All done. 2827 ** Don't send return error message if in VERIFY mode. 2828 */ 2829 2830 finis(true, true, ExitStat); 2831 /* NOTREACHED */ 2832 return ExitStat; 2833 } 2834 /* 2835 ** STOP_SENDMAIL -- Stop the running program 2836 ** 2837 ** Parameters: 2838 ** none. 2839 ** 2840 ** Returns: 2841 ** none. 2842 ** 2843 ** Side Effects: 2844 ** exits. 2845 */ 2846 2847 void 2848 stop_sendmail() 2849 { 2850 /* reset uid for process accounting */ 2851 endpwent(); 2852 (void) setuid(RealUid); 2853 exit(EX_OK); 2854 } 2855 /* 2856 ** FINIS -- Clean up and exit. 2857 ** 2858 ** Parameters: 2859 ** drop -- whether or not to drop CurEnv envelope 2860 ** cleanup -- call exit() or _exit()? 2861 ** exitstat -- exit status to use for exit() call 2862 ** 2863 ** Returns: 2864 ** never 2865 ** 2866 ** Side Effects: 2867 ** exits sendmail 2868 */ 2869 2870 void 2871 finis(drop, cleanup, exitstat) 2872 bool drop; 2873 bool cleanup; 2874 volatile int exitstat; 2875 { 2876 char pidpath[MAXPATHLEN]; 2877 2878 /* Still want to process new timeouts added below */ 2879 sm_clear_events(); 2880 (void) sm_releasesignal(SIGALRM); 2881 2882 if (tTd(2, 1)) 2883 { 2884 sm_dprintf("\n====finis: stat %d e_id=%s e_flags=", 2885 exitstat, 2886 CurEnv->e_id == NULL ? "NOQUEUE" : CurEnv->e_id); 2887 printenvflags(CurEnv); 2888 } 2889 if (tTd(2, 9)) 2890 printopenfds(false); 2891 2892 SM_TRY 2893 /* 2894 ** Clean up. This might raise E:mta.quickabort 2895 */ 2896 2897 /* clean up temp files */ 2898 CurEnv->e_to = NULL; 2899 if (drop) 2900 { 2901 if (CurEnv->e_id != NULL) 2902 { 2903 dropenvelope(CurEnv, true, false); 2904 sm_rpool_free(CurEnv->e_rpool); 2905 CurEnv->e_rpool = NULL; 2906 } 2907 else 2908 poststats(StatFile); 2909 } 2910 2911 /* flush any cached connections */ 2912 mci_flush(true, NULL); 2913 2914 /* close maps belonging to this pid */ 2915 closemaps(false); 2916 2917 #if USERDB 2918 /* close UserDatabase */ 2919 _udbx_close(); 2920 #endif /* USERDB */ 2921 2922 #if SASL 2923 stop_sasl_client(); 2924 #endif /* SASL */ 2925 2926 #if XLA 2927 /* clean up extended load average stuff */ 2928 xla_all_end(); 2929 #endif /* XLA */ 2930 2931 SM_FINALLY 2932 /* 2933 ** And exit. 2934 */ 2935 2936 if (LogLevel > 78) 2937 sm_syslog(LOG_DEBUG, CurEnv->e_id, "finis, pid=%d", 2938 (int) CurrentPid); 2939 if (exitstat == EX_TEMPFAIL || 2940 CurEnv->e_errormode == EM_BERKNET) 2941 exitstat = EX_OK; 2942 2943 /* XXX clean up queues and related data structures */ 2944 cleanup_queues(); 2945 #if SM_CONF_SHM 2946 cleanup_shm(DaemonPid == getpid()); 2947 #endif /* SM_CONF_SHM */ 2948 2949 /* close locked pid file */ 2950 close_sendmail_pid(); 2951 2952 if (DaemonPid == getpid() || PidFilePid == getpid()) 2953 { 2954 /* blow away the pid file */ 2955 expand(PidFile, pidpath, sizeof pidpath, CurEnv); 2956 (void) unlink(pidpath); 2957 } 2958 2959 /* reset uid for process accounting */ 2960 endpwent(); 2961 sm_mbdb_terminate(); 2962 #if _FFR_MEMSTAT 2963 (void) sm_memstat_close(); 2964 #endif /* _FFR_MEMSTAT */ 2965 (void) setuid(RealUid); 2966 #if SM_HEAP_CHECK 2967 /* dump the heap, if we are checking for memory leaks */ 2968 if (sm_debug_active(&SmHeapCheck, 2)) 2969 sm_heap_report(smioout, 2970 sm_debug_level(&SmHeapCheck) - 1); 2971 #endif /* SM_HEAP_CHECK */ 2972 if (sm_debug_active(&SmXtrapReport, 1)) 2973 sm_dprintf("xtrap count = %d\n", SmXtrapCount); 2974 if (cleanup) 2975 exit(exitstat); 2976 else 2977 _exit(exitstat); 2978 SM_END_TRY 2979 } 2980 /* 2981 ** INTINDEBUG -- signal handler for SIGINT in -bt mode 2982 ** 2983 ** Parameters: 2984 ** sig -- incoming signal. 2985 ** 2986 ** Returns: 2987 ** none. 2988 ** 2989 ** Side Effects: 2990 ** longjmps back to test mode loop. 2991 ** 2992 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 2993 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 2994 ** DOING. 2995 */ 2996 2997 /* Type of an exception generated on SIGINT during address test mode. */ 2998 static const SM_EXC_TYPE_T EtypeInterrupt = 2999 { 3000 SmExcTypeMagic, 3001 "S:mta.interrupt", 3002 "", 3003 sm_etype_printf, 3004 "interrupt", 3005 }; 3006 3007 /* ARGSUSED */ 3008 static SIGFUNC_DECL 3009 intindebug(sig) 3010 int sig; 3011 { 3012 int save_errno = errno; 3013 3014 FIX_SYSV_SIGNAL(sig, intindebug); 3015 errno = save_errno; 3016 CHECK_CRITICAL(sig); 3017 errno = save_errno; 3018 sm_exc_raisenew_x(&EtypeInterrupt); 3019 errno = save_errno; 3020 return SIGFUNC_RETURN; 3021 } 3022 /* 3023 ** SIGTERM -- SIGTERM handler for the daemon 3024 ** 3025 ** Parameters: 3026 ** sig -- signal number. 3027 ** 3028 ** Returns: 3029 ** none. 3030 ** 3031 ** Side Effects: 3032 ** Sets ShutdownRequest which will hopefully trigger 3033 ** the daemon to exit. 3034 ** 3035 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3036 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3037 ** DOING. 3038 */ 3039 3040 /* ARGSUSED */ 3041 static SIGFUNC_DECL 3042 sigterm(sig) 3043 int sig; 3044 { 3045 int save_errno = errno; 3046 3047 FIX_SYSV_SIGNAL(sig, sigterm); 3048 ShutdownRequest = "signal"; 3049 errno = save_errno; 3050 return SIGFUNC_RETURN; 3051 } 3052 /* 3053 ** SIGHUP -- handle a SIGHUP signal 3054 ** 3055 ** Parameters: 3056 ** sig -- incoming signal. 3057 ** 3058 ** Returns: 3059 ** none. 3060 ** 3061 ** Side Effects: 3062 ** Sets RestartRequest which should cause the daemon 3063 ** to restart. 3064 ** 3065 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3066 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3067 ** DOING. 3068 */ 3069 3070 /* ARGSUSED */ 3071 static SIGFUNC_DECL 3072 sighup(sig) 3073 int sig; 3074 { 3075 int save_errno = errno; 3076 3077 FIX_SYSV_SIGNAL(sig, sighup); 3078 RestartRequest = "signal"; 3079 errno = save_errno; 3080 return SIGFUNC_RETURN; 3081 } 3082 /* 3083 ** SIGPIPE -- signal handler for SIGPIPE 3084 ** 3085 ** Parameters: 3086 ** sig -- incoming signal. 3087 ** 3088 ** Returns: 3089 ** none. 3090 ** 3091 ** Side Effects: 3092 ** Sets StopRequest which should cause the mailq/hoststatus 3093 ** display to stop. 3094 ** 3095 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3096 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3097 ** DOING. 3098 */ 3099 3100 /* ARGSUSED */ 3101 static SIGFUNC_DECL 3102 sigpipe(sig) 3103 int sig; 3104 { 3105 int save_errno = errno; 3106 3107 FIX_SYSV_SIGNAL(sig, sigpipe); 3108 StopRequest = true; 3109 errno = save_errno; 3110 return SIGFUNC_RETURN; 3111 } 3112 /* 3113 ** INTSIG -- clean up on interrupt 3114 ** 3115 ** This just arranges to exit. It pessimizes in that it 3116 ** may resend a message. 3117 ** 3118 ** Parameters: 3119 ** none. 3120 ** 3121 ** Returns: 3122 ** none. 3123 ** 3124 ** Side Effects: 3125 ** Unlocks the current job. 3126 ** 3127 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3128 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3129 ** DOING. 3130 ** 3131 ** XXX: More work is needed for this signal handler. 3132 */ 3133 3134 /* ARGSUSED */ 3135 SIGFUNC_DECL 3136 intsig(sig) 3137 int sig; 3138 { 3139 bool drop = false; 3140 int save_errno = errno; 3141 3142 FIX_SYSV_SIGNAL(sig, intsig); 3143 errno = save_errno; 3144 CHECK_CRITICAL(sig); 3145 sm_allsignals(true); 3146 3147 if (sig != 0 && LogLevel > 79) 3148 sm_syslog(LOG_DEBUG, CurEnv->e_id, "interrupt"); 3149 FileName = NULL; 3150 3151 /* Clean-up on aborted stdin message submission */ 3152 if (CurEnv->e_id != NULL && 3153 (OpMode == MD_SMTP || 3154 OpMode == MD_DELIVER || 3155 OpMode == MD_ARPAFTP)) 3156 { 3157 register ADDRESS *q; 3158 3159 /* don't return an error indication */ 3160 CurEnv->e_to = NULL; 3161 CurEnv->e_flags &= ~EF_FATALERRS; 3162 CurEnv->e_flags |= EF_CLRQUEUE; 3163 3164 /* 3165 ** Spin through the addresses and 3166 ** mark them dead to prevent bounces 3167 */ 3168 3169 for (q = CurEnv->e_sendqueue; q != NULL; q = q->q_next) 3170 q->q_state = QS_DONTSEND; 3171 3172 drop = true; 3173 } 3174 else if (OpMode != MD_TEST) 3175 { 3176 unlockqueue(CurEnv); 3177 } 3178 3179 finis(drop, false, EX_OK); 3180 /* NOTREACHED */ 3181 } 3182 /* 3183 ** DISCONNECT -- remove our connection with any foreground process 3184 ** 3185 ** Parameters: 3186 ** droplev -- how "deeply" we should drop the line. 3187 ** 0 -- ignore signals, mail back errors, make sure 3188 ** output goes to stdout. 3189 ** 1 -- also, make stdout go to /dev/null. 3190 ** 2 -- also, disconnect from controlling terminal 3191 ** (only for daemon mode). 3192 ** e -- the current envelope. 3193 ** 3194 ** Returns: 3195 ** none 3196 ** 3197 ** Side Effects: 3198 ** Trys to insure that we are immune to vagaries of 3199 ** the controlling tty. 3200 */ 3201 3202 void 3203 disconnect(droplev, e) 3204 int droplev; 3205 register ENVELOPE *e; 3206 { 3207 int fd; 3208 3209 if (tTd(52, 1)) 3210 sm_dprintf("disconnect: In %d Out %d, e=%p\n", 3211 sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL), 3212 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL), e); 3213 if (tTd(52, 100)) 3214 { 3215 sm_dprintf("don't\n"); 3216 return; 3217 } 3218 if (LogLevel > 93) 3219 sm_syslog(LOG_DEBUG, e->e_id, 3220 "disconnect level %d", 3221 droplev); 3222 3223 /* be sure we don't get nasty signals */ 3224 (void) sm_signal(SIGINT, SIG_IGN); 3225 (void) sm_signal(SIGQUIT, SIG_IGN); 3226 3227 /* we can't communicate with our caller, so.... */ 3228 HoldErrs = true; 3229 CurEnv->e_errormode = EM_MAIL; 3230 Verbose = 0; 3231 DisConnected = true; 3232 3233 /* all input from /dev/null */ 3234 if (InChannel != smioin) 3235 { 3236 (void) sm_io_close(InChannel, SM_TIME_DEFAULT); 3237 InChannel = smioin; 3238 } 3239 if (sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3240 SM_IO_RDONLY, NULL, smioin) == NULL) 3241 sm_syslog(LOG_ERR, e->e_id, 3242 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3243 SM_PATH_DEVNULL, sm_errstring(errno)); 3244 3245 /* 3246 ** output to the transcript 3247 ** We also compare the fd numbers here since OutChannel 3248 ** might be a layer on top of smioout due to encryption 3249 ** (see sfsasl.c). 3250 */ 3251 3252 if (OutChannel != smioout && 3253 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL) != 3254 sm_io_getinfo(smioout, SM_IO_WHAT_FD, NULL)) 3255 { 3256 (void) sm_io_close(OutChannel, SM_TIME_DEFAULT); 3257 OutChannel = smioout; 3258 3259 #if 0 3260 /* 3261 ** Has smioout been closed? Reopen it. 3262 ** This shouldn't happen anymore, the code is here 3263 ** just as a reminder. 3264 */ 3265 3266 if (smioout->sm_magic == NULL && 3267 sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3268 SM_IO_WRONLY, NULL, smioout) == NULL) 3269 sm_syslog(LOG_ERR, e->e_id, 3270 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3271 SM_PATH_DEVNULL, sm_errstring(errno)); 3272 #endif /* 0 */ 3273 } 3274 if (droplev > 0) 3275 { 3276 fd = open(SM_PATH_DEVNULL, O_WRONLY, 0666); 3277 if (fd == -1) 3278 sm_syslog(LOG_ERR, e->e_id, 3279 "disconnect: open(\"%s\") failed: %s", 3280 SM_PATH_DEVNULL, sm_errstring(errno)); 3281 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 3282 (void) dup2(fd, STDOUT_FILENO); 3283 (void) dup2(fd, STDERR_FILENO); 3284 (void) close(fd); 3285 } 3286 3287 /* drop our controlling TTY completely if possible */ 3288 if (droplev > 1) 3289 { 3290 (void) setsid(); 3291 errno = 0; 3292 } 3293 3294 #if XDEBUG 3295 checkfd012("disconnect"); 3296 #endif /* XDEBUG */ 3297 3298 if (LogLevel > 71) 3299 sm_syslog(LOG_DEBUG, e->e_id, "in background, pid=%d", 3300 (int) CurrentPid); 3301 3302 errno = 0; 3303 } 3304 3305 static void 3306 obsolete(argv) 3307 char *argv[]; 3308 { 3309 register char *ap; 3310 register char *op; 3311 3312 while ((ap = *++argv) != NULL) 3313 { 3314 /* Return if "--" or not an option of any form. */ 3315 if (ap[0] != '-' || ap[1] == '-') 3316 return; 3317 3318 /* Don't allow users to use "-Q." or "-Q ." */ 3319 if ((ap[1] == 'Q' && ap[2] == '.') || 3320 (ap[1] == 'Q' && argv[1] != NULL && 3321 argv[1][0] == '.' && argv[1][1] == '\0')) 3322 { 3323 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3324 "Can not use -Q.\n"); 3325 exit(EX_USAGE); 3326 } 3327 3328 /* skip over options that do have a value */ 3329 op = strchr(OPTIONS, ap[1]); 3330 if (op != NULL && *++op == ':' && ap[2] == '\0' && 3331 ap[1] != 'd' && 3332 #if defined(sony_news) 3333 ap[1] != 'E' && ap[1] != 'J' && 3334 #endif /* defined(sony_news) */ 3335 argv[1] != NULL && argv[1][0] != '-') 3336 { 3337 argv++; 3338 continue; 3339 } 3340 3341 /* If -C doesn't have an argument, use sendmail.cf. */ 3342 #define __DEFPATH "sendmail.cf" 3343 if (ap[1] == 'C' && ap[2] == '\0') 3344 { 3345 *argv = xalloc(sizeof(__DEFPATH) + 2); 3346 (void) sm_strlcpyn(argv[0], sizeof(__DEFPATH) + 2, 2, 3347 "-C", __DEFPATH); 3348 } 3349 3350 /* If -q doesn't have an argument, run it once. */ 3351 if (ap[1] == 'q' && ap[2] == '\0') 3352 *argv = "-q0"; 3353 3354 /* If -Q doesn't have an argument, disable quarantining */ 3355 if (ap[1] == 'Q' && ap[2] == '\0') 3356 *argv = "-Q."; 3357 3358 /* if -d doesn't have an argument, use 0-99.1 */ 3359 if (ap[1] == 'd' && ap[2] == '\0') 3360 *argv = "-d0-99.1"; 3361 3362 #if defined(sony_news) 3363 /* if -E doesn't have an argument, use -EC */ 3364 if (ap[1] == 'E' && ap[2] == '\0') 3365 *argv = "-EC"; 3366 3367 /* if -J doesn't have an argument, use -JJ */ 3368 if (ap[1] == 'J' && ap[2] == '\0') 3369 *argv = "-JJ"; 3370 #endif /* defined(sony_news) */ 3371 } 3372 } 3373 /* 3374 ** AUTH_WARNING -- specify authorization warning 3375 ** 3376 ** Parameters: 3377 ** e -- the current envelope. 3378 ** msg -- the text of the message. 3379 ** args -- arguments to the message. 3380 ** 3381 ** Returns: 3382 ** none. 3383 */ 3384 3385 void 3386 #ifdef __STDC__ 3387 auth_warning(register ENVELOPE *e, const char *msg, ...) 3388 #else /* __STDC__ */ 3389 auth_warning(e, msg, va_alist) 3390 register ENVELOPE *e; 3391 const char *msg; 3392 va_dcl 3393 #endif /* __STDC__ */ 3394 { 3395 char buf[MAXLINE]; 3396 SM_VA_LOCAL_DECL 3397 3398 if (bitset(PRIV_AUTHWARNINGS, PrivacyFlags)) 3399 { 3400 register char *p; 3401 static char hostbuf[48]; 3402 3403 if (hostbuf[0] == '\0') 3404 { 3405 struct hostent *hp; 3406 3407 hp = myhostname(hostbuf, sizeof hostbuf); 3408 #if NETINET6 3409 if (hp != NULL) 3410 { 3411 freehostent(hp); 3412 hp = NULL; 3413 } 3414 #endif /* NETINET6 */ 3415 } 3416 3417 (void) sm_strlcpyn(buf, sizeof buf, 2, hostbuf, ": "); 3418 p = &buf[strlen(buf)]; 3419 SM_VA_START(ap, msg); 3420 (void) sm_vsnprintf(p, SPACELEFT(buf, p), msg, ap); 3421 SM_VA_END(ap); 3422 addheader("X-Authentication-Warning", buf, 0, e); 3423 if (LogLevel > 3) 3424 sm_syslog(LOG_INFO, e->e_id, 3425 "Authentication-Warning: %.400s", 3426 buf); 3427 } 3428 } 3429 /* 3430 ** GETEXTENV -- get from external environment 3431 ** 3432 ** Parameters: 3433 ** envar -- the name of the variable to retrieve 3434 ** 3435 ** Returns: 3436 ** The value, if any. 3437 */ 3438 3439 static char * 3440 getextenv(envar) 3441 const char *envar; 3442 { 3443 char **envp; 3444 int l; 3445 3446 l = strlen(envar); 3447 for (envp = ExternalEnviron; envp != NULL && *envp != NULL; envp++) 3448 { 3449 if (strncmp(*envp, envar, l) == 0 && (*envp)[l] == '=') 3450 return &(*envp)[l + 1]; 3451 } 3452 return NULL; 3453 } 3454 /* 3455 ** SM_SETUSERENV -- set an environment variable in the propagated environment 3456 ** 3457 ** Parameters: 3458 ** envar -- the name of the environment variable. 3459 ** value -- the value to which it should be set. If 3460 ** null, this is extracted from the incoming 3461 ** environment. If that is not set, the call 3462 ** to sm_setuserenv is ignored. 3463 ** 3464 ** Returns: 3465 ** none. 3466 */ 3467 3468 void 3469 sm_setuserenv(envar, value) 3470 const char *envar; 3471 const char *value; 3472 { 3473 int i, l; 3474 char **evp = UserEnviron; 3475 char *p; 3476 3477 if (value == NULL) 3478 { 3479 value = getextenv(envar); 3480 if (value == NULL) 3481 return; 3482 } 3483 3484 /* XXX enforce reasonable size? */ 3485 i = strlen(envar) + 1; 3486 l = strlen(value) + i + 1; 3487 p = (char *) xalloc(l); 3488 (void) sm_strlcpyn(p, l, 3, envar, "=", value); 3489 3490 while (*evp != NULL && strncmp(*evp, p, i) != 0) 3491 evp++; 3492 if (*evp != NULL) 3493 { 3494 *evp++ = p; 3495 } 3496 else if (evp < &UserEnviron[MAXUSERENVIRON]) 3497 { 3498 *evp++ = p; 3499 *evp = NULL; 3500 } 3501 3502 /* make sure it is in our environment as well */ 3503 if (putenv(p) < 0) 3504 syserr("sm_setuserenv: putenv(%s) failed", p); 3505 } 3506 /* 3507 ** DUMPSTATE -- dump state 3508 ** 3509 ** For debugging. 3510 */ 3511 3512 void 3513 dumpstate(when) 3514 char *when; 3515 { 3516 register char *j = macvalue('j', CurEnv); 3517 int rs; 3518 extern int NextMacroId; 3519 3520 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3521 "--- dumping state on %s: $j = %s ---", 3522 when, 3523 j == NULL ? "<NULL>" : j); 3524 if (j != NULL) 3525 { 3526 if (!wordinclass(j, 'w')) 3527 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3528 "*** $j not in $=w ***"); 3529 } 3530 sm_syslog(LOG_DEBUG, CurEnv->e_id, "CurChildren = %d", CurChildren); 3531 sm_syslog(LOG_DEBUG, CurEnv->e_id, "NextMacroId = %d (Max %d)", 3532 NextMacroId, MAXMACROID); 3533 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- open file descriptors: ---"); 3534 printopenfds(true); 3535 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- connection cache: ---"); 3536 mci_dump_all(smioout, true); 3537 rs = strtorwset("debug_dumpstate", NULL, ST_FIND); 3538 if (rs > 0) 3539 { 3540 int status; 3541 register char **pvp; 3542 char *pv[MAXATOM + 1]; 3543 3544 pv[0] = NULL; 3545 status = REWRITE(pv, rs, CurEnv); 3546 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3547 "--- ruleset debug_dumpstate returns stat %d, pv: ---", 3548 status); 3549 for (pvp = pv; *pvp != NULL; pvp++) 3550 sm_syslog(LOG_DEBUG, CurEnv->e_id, "%s", *pvp); 3551 } 3552 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- end of state dump ---"); 3553 } 3554 3555 #ifdef SIGUSR1 3556 /* 3557 ** SIGUSR1 -- Signal a request to dump state. 3558 ** 3559 ** Parameters: 3560 ** sig -- calling signal. 3561 ** 3562 ** Returns: 3563 ** none. 3564 ** 3565 ** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3566 ** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3567 ** DOING. 3568 ** 3569 ** XXX: More work is needed for this signal handler. 3570 */ 3571 3572 /* ARGSUSED */ 3573 static SIGFUNC_DECL 3574 sigusr1(sig) 3575 int sig; 3576 { 3577 int save_errno = errno; 3578 # if SM_HEAP_CHECK 3579 extern void dumpstab __P((void)); 3580 # endif /* SM_HEAP_CHECK */ 3581 3582 FIX_SYSV_SIGNAL(sig, sigusr1); 3583 errno = save_errno; 3584 CHECK_CRITICAL(sig); 3585 dumpstate("user signal"); 3586 # if SM_HEAP_CHECK 3587 dumpstab(); 3588 # endif /* SM_HEAP_CHECK */ 3589 errno = save_errno; 3590 return SIGFUNC_RETURN; 3591 } 3592 #endif /* SIGUSR1 */ 3593 3594 /* 3595 ** DROP_PRIVILEGES -- reduce privileges to those of the RunAsUser option 3596 ** 3597 ** Parameters: 3598 ** to_real_uid -- if set, drop to the real uid instead 3599 ** of the RunAsUser. 3600 ** 3601 ** Returns: 3602 ** EX_OSERR if the setuid failed. 3603 ** EX_OK otherwise. 3604 */ 3605 3606 int 3607 drop_privileges(to_real_uid) 3608 bool to_real_uid; 3609 { 3610 int rval = EX_OK; 3611 GIDSET_T emptygidset[1]; 3612 3613 if (tTd(47, 1)) 3614 sm_dprintf("drop_privileges(%d): Real[UG]id=%d:%d, get[ug]id=%d:%d, gete[ug]id=%d:%d, RunAs[UG]id=%d:%d\n", 3615 (int) to_real_uid, 3616 (int) RealUid, (int) RealGid, 3617 (int) getuid(), (int) getgid(), 3618 (int) geteuid(), (int) getegid(), 3619 (int) RunAsUid, (int) RunAsGid); 3620 3621 if (to_real_uid) 3622 { 3623 RunAsUserName = RealUserName; 3624 RunAsUid = RealUid; 3625 RunAsGid = RealGid; 3626 EffGid = RunAsGid; 3627 } 3628 3629 /* make sure no one can grab open descriptors for secret files */ 3630 endpwent(); 3631 sm_mbdb_terminate(); 3632 3633 /* reset group permissions; these can be set later */ 3634 emptygidset[0] = (to_real_uid || RunAsGid != 0) ? RunAsGid : getegid(); 3635 3636 /* 3637 ** Notice: on some OS (Linux...) the setgroups() call causes 3638 ** a logfile entry if sendmail is not run by root. 3639 ** However, it is unclear (no POSIX standard) whether 3640 ** setgroups() can only succeed if executed by root. 3641 ** So for now we keep it as it is; if you want to change it, use 3642 ** if (geteuid() == 0 && setgroups(1, emptygidset) == -1) 3643 */ 3644 3645 if (setgroups(1, emptygidset) == -1 && geteuid() == 0) 3646 { 3647 syserr("drop_privileges: setgroups(1, %d) failed", 3648 (int) emptygidset[0]); 3649 rval = EX_OSERR; 3650 } 3651 3652 /* reset primary group id */ 3653 if (to_real_uid) 3654 { 3655 /* 3656 ** Drop gid to real gid. 3657 ** On some OS we must reset the effective[/real[/saved]] gid, 3658 ** and then use setgid() to finally drop all group privileges. 3659 ** Later on we check whether we can get back the 3660 ** effective gid. 3661 */ 3662 3663 #if HASSETEGID 3664 if (setegid(RunAsGid) < 0) 3665 { 3666 syserr("drop_privileges: setegid(%d) failed", 3667 (int) RunAsGid); 3668 rval = EX_OSERR; 3669 } 3670 #else /* HASSETEGID */ 3671 # if HASSETREGID 3672 if (setregid(RunAsGid, RunAsGid) < 0) 3673 { 3674 syserr("drop_privileges: setregid(%d, %d) failed", 3675 (int) RunAsGid, (int) RunAsGid); 3676 rval = EX_OSERR; 3677 } 3678 # else /* HASSETREGID */ 3679 # if HASSETRESGID 3680 if (setresgid(RunAsGid, RunAsGid, RunAsGid) < 0) 3681 { 3682 syserr("drop_privileges: setresgid(%d, %d, %d) failed", 3683 (int) RunAsGid, (int) RunAsGid, (int) RunAsGid); 3684 rval = EX_OSERR; 3685 } 3686 # endif /* HASSETRESGID */ 3687 # endif /* HASSETREGID */ 3688 #endif /* HASSETEGID */ 3689 } 3690 if (rval == EX_OK && (to_real_uid || RunAsGid != 0)) 3691 { 3692 if (setgid(RunAsGid) < 0 && (!UseMSP || getegid() != RunAsGid)) 3693 { 3694 syserr("drop_privileges: setgid(%d) failed", 3695 (int) RunAsGid); 3696 rval = EX_OSERR; 3697 } 3698 errno = 0; 3699 if (rval == EX_OK && getegid() != RunAsGid) 3700 { 3701 syserr("drop_privileges: Unable to set effective gid=%d to RunAsGid=%d", 3702 (int) getegid(), (int) RunAsGid); 3703 rval = EX_OSERR; 3704 } 3705 } 3706 3707 /* fiddle with uid */ 3708 if (to_real_uid || RunAsUid != 0) 3709 { 3710 uid_t euid; 3711 3712 /* 3713 ** Try to setuid(RunAsUid). 3714 ** euid must be RunAsUid, 3715 ** ruid must be RunAsUid unless (e|r)uid wasn't 0 3716 ** and we didn't have to drop privileges to the real uid. 3717 */ 3718 3719 if (setuid(RunAsUid) < 0 || 3720 geteuid() != RunAsUid || 3721 (getuid() != RunAsUid && 3722 (to_real_uid || geteuid() == 0 || getuid() == 0))) 3723 { 3724 #if HASSETREUID 3725 /* 3726 ** if ruid != RunAsUid, euid == RunAsUid, then 3727 ** try resetting just the real uid, then using 3728 ** setuid() to drop the saved-uid as well. 3729 */ 3730 3731 if (geteuid() == RunAsUid) 3732 { 3733 if (setreuid(RunAsUid, -1) < 0) 3734 { 3735 syserr("drop_privileges: setreuid(%d, -1) failed", 3736 (int) RunAsUid); 3737 rval = EX_OSERR; 3738 } 3739 if (setuid(RunAsUid) < 0) 3740 { 3741 syserr("drop_privileges: second setuid(%d) attempt failed", 3742 (int) RunAsUid); 3743 rval = EX_OSERR; 3744 } 3745 } 3746 else 3747 #endif /* HASSETREUID */ 3748 { 3749 syserr("drop_privileges: setuid(%d) failed", 3750 (int) RunAsUid); 3751 rval = EX_OSERR; 3752 } 3753 } 3754 euid = geteuid(); 3755 if (RunAsUid != 0 && setuid(0) == 0) 3756 { 3757 /* 3758 ** Believe it or not, the Linux capability model 3759 ** allows a non-root process to override setuid() 3760 ** on a process running as root and prevent that 3761 ** process from dropping privileges. 3762 */ 3763 3764 syserr("drop_privileges: setuid(0) succeeded (when it should not)"); 3765 rval = EX_OSERR; 3766 } 3767 else if (RunAsUid != euid && setuid(euid) == 0) 3768 { 3769 /* 3770 ** Some operating systems will keep the saved-uid 3771 ** if a non-root effective-uid calls setuid(real-uid) 3772 ** making it possible to set it back again later. 3773 */ 3774 3775 syserr("drop_privileges: Unable to drop non-root set-user-ID privileges"); 3776 rval = EX_OSERR; 3777 } 3778 } 3779 3780 if ((to_real_uid || RunAsGid != 0) && 3781 rval == EX_OK && RunAsGid != EffGid && 3782 getuid() != 0 && geteuid() != 0) 3783 { 3784 errno = 0; 3785 if (setgid(EffGid) == 0) 3786 { 3787 syserr("drop_privileges: setgid(%d) succeeded (when it should not)", 3788 (int) EffGid); 3789 rval = EX_OSERR; 3790 } 3791 } 3792 3793 if (tTd(47, 5)) 3794 { 3795 sm_dprintf("drop_privileges: e/ruid = %d/%d e/rgid = %d/%d\n", 3796 (int) geteuid(), (int) getuid(), 3797 (int) getegid(), (int) getgid()); 3798 sm_dprintf("drop_privileges: RunAsUser = %d:%d\n", 3799 (int) RunAsUid, (int) RunAsGid); 3800 if (tTd(47, 10)) 3801 sm_dprintf("drop_privileges: rval = %d\n", rval); 3802 } 3803 return rval; 3804 } 3805 /* 3806 ** FILL_FD -- make sure a file descriptor has been properly allocated 3807 ** 3808 ** Used to make sure that stdin/out/err are allocated on startup 3809 ** 3810 ** Parameters: 3811 ** fd -- the file descriptor to be filled. 3812 ** where -- a string used for logging. If NULL, this is 3813 ** being called on startup, and logging should 3814 ** not be done. 3815 ** 3816 ** Returns: 3817 ** none 3818 ** 3819 ** Side Effects: 3820 ** possibly changes MissingFds 3821 */ 3822 3823 void 3824 fill_fd(fd, where) 3825 int fd; 3826 char *where; 3827 { 3828 int i; 3829 struct stat stbuf; 3830 3831 if (fstat(fd, &stbuf) >= 0 || errno != EBADF) 3832 return; 3833 3834 if (where != NULL) 3835 syserr("fill_fd: %s: fd %d not open", where, fd); 3836 else 3837 MissingFds |= 1 << fd; 3838 i = open(SM_PATH_DEVNULL, fd == 0 ? O_RDONLY : O_WRONLY, 0666); 3839 if (i < 0) 3840 { 3841 syserr("!fill_fd: %s: cannot open %s", 3842 where == NULL ? "startup" : where, SM_PATH_DEVNULL); 3843 } 3844 if (fd != i) 3845 { 3846 (void) dup2(i, fd); 3847 (void) close(i); 3848 } 3849 } 3850 /* 3851 ** SM_PRINTOPTIONS -- print options 3852 ** 3853 ** Parameters: 3854 ** options -- array of options. 3855 ** 3856 ** Returns: 3857 ** none. 3858 */ 3859 3860 static void 3861 sm_printoptions(options) 3862 char **options; 3863 { 3864 int ll; 3865 char **av; 3866 3867 av = options; 3868 ll = 7; 3869 while (*av != NULL) 3870 { 3871 if (ll + strlen(*av) > 63) 3872 { 3873 sm_dprintf("\n"); 3874 ll = 0; 3875 } 3876 if (ll == 0) 3877 sm_dprintf("\t\t"); 3878 else 3879 sm_dprintf(" "); 3880 sm_dprintf("%s", *av); 3881 ll += strlen(*av++) + 1; 3882 } 3883 sm_dprintf("\n"); 3884 } 3885 /* 3886 ** TESTMODELINE -- process a test mode input line 3887 ** 3888 ** Parameters: 3889 ** line -- the input line. 3890 ** e -- the current environment. 3891 ** Syntax: 3892 ** # a comment 3893 ** .X process X as a configuration line 3894 ** =X dump a configuration item (such as mailers) 3895 ** $X dump a macro or class 3896 ** /X try an activity 3897 ** X normal process through rule set X 3898 */ 3899 3900 static void 3901 testmodeline(line, e) 3902 char *line; 3903 ENVELOPE *e; 3904 { 3905 register char *p; 3906 char *q; 3907 auto char *delimptr; 3908 int mid; 3909 int i, rs; 3910 STAB *map; 3911 char **s; 3912 struct rewrite *rw; 3913 ADDRESS a; 3914 static int tryflags = RF_COPYNONE; 3915 char exbuf[MAXLINE]; 3916 extern unsigned char TokTypeNoC[]; 3917 3918 /* skip leading spaces */ 3919 while (*line == ' ') 3920 line++; 3921 3922 switch (line[0]) 3923 { 3924 case '#': 3925 case '\0': 3926 return; 3927 3928 case '?': 3929 help("-bt", e); 3930 return; 3931 3932 case '.': /* config-style settings */ 3933 switch (line[1]) 3934 { 3935 case 'D': 3936 mid = macid_parse(&line[2], &delimptr); 3937 if (mid == 0) 3938 return; 3939 translate_dollars(delimptr); 3940 macdefine(&e->e_macro, A_TEMP, mid, delimptr); 3941 break; 3942 3943 case 'C': 3944 if (line[2] == '\0') /* not to call syserr() */ 3945 return; 3946 3947 mid = macid_parse(&line[2], &delimptr); 3948 if (mid == 0) 3949 return; 3950 translate_dollars(delimptr); 3951 expand(delimptr, exbuf, sizeof exbuf, e); 3952 p = exbuf; 3953 while (*p != '\0') 3954 { 3955 register char *wd; 3956 char delim; 3957 3958 while (*p != '\0' && isascii(*p) && isspace(*p)) 3959 p++; 3960 wd = p; 3961 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 3962 p++; 3963 delim = *p; 3964 *p = '\0'; 3965 if (wd[0] != '\0') 3966 setclass(mid, wd); 3967 *p = delim; 3968 } 3969 break; 3970 3971 case '\0': 3972 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3973 "Usage: .[DC]macro value(s)\n"); 3974 break; 3975 3976 default: 3977 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3978 "Unknown \".\" command %s\n", line); 3979 break; 3980 } 3981 return; 3982 3983 case '=': /* config-style settings */ 3984 switch (line[1]) 3985 { 3986 case 'S': /* dump rule set */ 3987 rs = strtorwset(&line[2], NULL, ST_FIND); 3988 if (rs < 0) 3989 { 3990 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3991 "Undefined ruleset %s\n", &line[2]); 3992 return; 3993 } 3994 rw = RewriteRules[rs]; 3995 if (rw == NULL) 3996 return; 3997 do 3998 { 3999 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4000 'R'); 4001 s = rw->r_lhs; 4002 while (*s != NULL) 4003 { 4004 xputs(smioout, *s++); 4005 (void) sm_io_putc(smioout, 4006 SM_TIME_DEFAULT, ' '); 4007 } 4008 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4009 '\t'); 4010 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4011 '\t'); 4012 s = rw->r_rhs; 4013 while (*s != NULL) 4014 { 4015 xputs(smioout, *s++); 4016 (void) sm_io_putc(smioout, 4017 SM_TIME_DEFAULT, ' '); 4018 } 4019 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4020 '\n'); 4021 } while ((rw = rw->r_next) != NULL); 4022 break; 4023 4024 case 'M': 4025 for (i = 0; i < MAXMAILERS; i++) 4026 { 4027 if (Mailer[i] != NULL) 4028 printmailer(smioout, Mailer[i]); 4029 } 4030 break; 4031 4032 case '\0': 4033 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4034 "Usage: =Sruleset or =M\n"); 4035 break; 4036 4037 default: 4038 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4039 "Unknown \"=\" command %s\n", line); 4040 break; 4041 } 4042 return; 4043 4044 case '-': /* set command-line-like opts */ 4045 switch (line[1]) 4046 { 4047 case 'd': 4048 tTflag(&line[2]); 4049 break; 4050 4051 case '\0': 4052 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4053 "Usage: -d{debug arguments}\n"); 4054 break; 4055 4056 default: 4057 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4058 "Unknown \"-\" command %s\n", line); 4059 break; 4060 } 4061 return; 4062 4063 case '$': 4064 if (line[1] == '=') 4065 { 4066 mid = macid(&line[2]); 4067 if (mid != 0) 4068 stabapply(dump_class, mid); 4069 return; 4070 } 4071 mid = macid(&line[1]); 4072 if (mid == 0) 4073 return; 4074 p = macvalue(mid, e); 4075 if (p == NULL) 4076 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4077 "Undefined\n"); 4078 else 4079 { 4080 xputs(smioout, p); 4081 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4082 "\n"); 4083 } 4084 return; 4085 4086 case '/': /* miscellaneous commands */ 4087 p = &line[strlen(line)]; 4088 while (--p >= line && isascii(*p) && isspace(*p)) 4089 *p = '\0'; 4090 p = strpbrk(line, " \t"); 4091 if (p != NULL) 4092 { 4093 while (isascii(*p) && isspace(*p)) 4094 *p++ = '\0'; 4095 } 4096 else 4097 p = ""; 4098 if (line[1] == '\0') 4099 { 4100 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4101 "Usage: /[canon|map|mx|parse|try|tryflags]\n"); 4102 return; 4103 } 4104 if (sm_strcasecmp(&line[1], "quit") == 0) 4105 { 4106 CurEnv->e_id = NULL; 4107 finis(true, true, ExitStat); 4108 /* NOTREACHED */ 4109 } 4110 if (sm_strcasecmp(&line[1], "mx") == 0) 4111 { 4112 #if NAMED_BIND 4113 /* look up MX records */ 4114 int nmx; 4115 auto int rcode; 4116 char *mxhosts[MAXMXHOSTS + 1]; 4117 4118 if (*p == '\0') 4119 { 4120 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4121 "Usage: /mx address\n"); 4122 return; 4123 } 4124 nmx = getmxrr(p, mxhosts, NULL, false, &rcode, true, 4125 NULL); 4126 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4127 "getmxrr(%s) returns %d value(s):\n", 4128 p, nmx); 4129 for (i = 0; i < nmx; i++) 4130 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4131 "\t%s\n", mxhosts[i]); 4132 #else /* NAMED_BIND */ 4133 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4134 "No MX code compiled in\n"); 4135 #endif /* NAMED_BIND */ 4136 } 4137 else if (sm_strcasecmp(&line[1], "canon") == 0) 4138 { 4139 char host[MAXHOSTNAMELEN]; 4140 4141 if (*p == '\0') 4142 { 4143 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4144 "Usage: /canon address\n"); 4145 return; 4146 } 4147 else if (sm_strlcpy(host, p, sizeof host) >= sizeof host) 4148 { 4149 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4150 "Name too long\n"); 4151 return; 4152 } 4153 (void) getcanonname(host, sizeof host, !HasWildcardMX, 4154 NULL); 4155 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4156 "getcanonname(%s) returns %s\n", 4157 p, host); 4158 } 4159 else if (sm_strcasecmp(&line[1], "map") == 0) 4160 { 4161 auto int rcode = EX_OK; 4162 char *av[2]; 4163 4164 if (*p == '\0') 4165 { 4166 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4167 "Usage: /map mapname key\n"); 4168 return; 4169 } 4170 for (q = p; *q != '\0' && !(isascii(*q) && isspace(*q)); q++) 4171 continue; 4172 if (*q == '\0') 4173 { 4174 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4175 "No key specified\n"); 4176 return; 4177 } 4178 *q++ = '\0'; 4179 map = stab(p, ST_MAP, ST_FIND); 4180 if (map == NULL) 4181 { 4182 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4183 "Map named \"%s\" not found\n", p); 4184 return; 4185 } 4186 if (!bitset(MF_OPEN, map->s_map.map_mflags) && 4187 !openmap(&(map->s_map))) 4188 { 4189 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4190 "Map named \"%s\" not open\n", p); 4191 return; 4192 } 4193 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4194 "map_lookup: %s (%s) ", p, q); 4195 av[0] = q; 4196 av[1] = NULL; 4197 p = (*map->s_map.map_class->map_lookup) 4198 (&map->s_map, q, av, &rcode); 4199 if (p == NULL) 4200 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4201 "no match (%d)\n", 4202 rcode); 4203 else 4204 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4205 "returns %s (%d)\n", p, 4206 rcode); 4207 } 4208 else if (sm_strcasecmp(&line[1], "try") == 0) 4209 { 4210 MAILER *m; 4211 STAB *st; 4212 auto int rcode = EX_OK; 4213 4214 q = strpbrk(p, " \t"); 4215 if (q != NULL) 4216 { 4217 while (isascii(*q) && isspace(*q)) 4218 *q++ = '\0'; 4219 } 4220 if (q == NULL || *q == '\0') 4221 { 4222 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4223 "Usage: /try mailer address\n"); 4224 return; 4225 } 4226 st = stab(p, ST_MAILER, ST_FIND); 4227 if (st == NULL) 4228 { 4229 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4230 "Unknown mailer %s\n", p); 4231 return; 4232 } 4233 m = st->s_mailer; 4234 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4235 "Trying %s %s address %s for mailer %s\n", 4236 bitset(RF_HEADERADDR, tryflags) ? "header" 4237 : "envelope", 4238 bitset(RF_SENDERADDR, tryflags) ? "sender" 4239 : "recipient", q, p); 4240 p = remotename(q, m, tryflags, &rcode, CurEnv); 4241 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4242 "Rcode = %d, addr = %s\n", 4243 rcode, p == NULL ? "<NULL>" : p); 4244 e->e_to = NULL; 4245 } 4246 else if (sm_strcasecmp(&line[1], "tryflags") == 0) 4247 { 4248 if (*p == '\0') 4249 { 4250 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4251 "Usage: /tryflags [Hh|Ee][Ss|Rr]\n"); 4252 return; 4253 } 4254 for (; *p != '\0'; p++) 4255 { 4256 switch (*p) 4257 { 4258 case 'H': 4259 case 'h': 4260 tryflags |= RF_HEADERADDR; 4261 break; 4262 4263 case 'E': 4264 case 'e': 4265 tryflags &= ~RF_HEADERADDR; 4266 break; 4267 4268 case 'S': 4269 case 's': 4270 tryflags |= RF_SENDERADDR; 4271 break; 4272 4273 case 'R': 4274 case 'r': 4275 tryflags &= ~RF_SENDERADDR; 4276 break; 4277 } 4278 } 4279 exbuf[0] = bitset(RF_HEADERADDR, tryflags) ? 'h' : 'e'; 4280 exbuf[1] = ' '; 4281 exbuf[2] = bitset(RF_SENDERADDR, tryflags) ? 's' : 'r'; 4282 exbuf[3] = '\0'; 4283 macdefine(&e->e_macro, A_TEMP, 4284 macid("{addr_type}"), exbuf); 4285 } 4286 else if (sm_strcasecmp(&line[1], "parse") == 0) 4287 { 4288 if (*p == '\0') 4289 { 4290 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4291 "Usage: /parse address\n"); 4292 return; 4293 } 4294 q = crackaddr(p, e); 4295 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4296 "Cracked address = "); 4297 xputs(smioout, q); 4298 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4299 "\nParsing %s %s address\n", 4300 bitset(RF_HEADERADDR, tryflags) ? 4301 "header" : "envelope", 4302 bitset(RF_SENDERADDR, tryflags) ? 4303 "sender" : "recipient"); 4304 if (parseaddr(p, &a, tryflags, '\0', NULL, e, true) 4305 == NULL) 4306 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4307 "Cannot parse\n"); 4308 else if (a.q_host != NULL && a.q_host[0] != '\0') 4309 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4310 "mailer %s, host %s, user %s\n", 4311 a.q_mailer->m_name, 4312 a.q_host, 4313 a.q_user); 4314 else 4315 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4316 "mailer %s, user %s\n", 4317 a.q_mailer->m_name, 4318 a.q_user); 4319 e->e_to = NULL; 4320 } 4321 else 4322 { 4323 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4324 "Unknown \"/\" command %s\n", 4325 line); 4326 } 4327 return; 4328 } 4329 4330 for (p = line; isascii(*p) && isspace(*p); p++) 4331 continue; 4332 q = p; 4333 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 4334 p++; 4335 if (*p == '\0') 4336 { 4337 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4338 "No address!\n"); 4339 return; 4340 } 4341 *p = '\0'; 4342 if (invalidaddr(p + 1, NULL, true)) 4343 return; 4344 do 4345 { 4346 register char **pvp; 4347 char pvpbuf[PSBUFSIZE]; 4348 4349 pvp = prescan(++p, ',', pvpbuf, sizeof pvpbuf, &delimptr, 4350 ConfigLevel >= 9 ? TokTypeNoC : NULL, false); 4351 if (pvp == NULL) 4352 continue; 4353 p = q; 4354 while (*p != '\0') 4355 { 4356 int status; 4357 4358 rs = strtorwset(p, NULL, ST_FIND); 4359 if (rs < 0) 4360 { 4361 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4362 "Undefined ruleset %s\n", 4363 p); 4364 break; 4365 } 4366 status = REWRITE(pvp, rs, e); 4367 if (status != EX_OK) 4368 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4369 "== Ruleset %s (%d) status %d\n", 4370 p, rs, status); 4371 while (*p != '\0' && *p++ != ',') 4372 continue; 4373 } 4374 } while (*(p = delimptr) != '\0'); 4375 } 4376 4377 static void 4378 dump_class(s, id) 4379 register STAB *s; 4380 int id; 4381 { 4382 if (s->s_symtype != ST_CLASS) 4383 return; 4384 if (bitnset(bitidx(id), s->s_class)) 4385 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4386 "%s\n", s->s_name); 4387 } 4388 4389 /* 4390 ** An exception type used to create QuickAbort exceptions. 4391 ** This is my first cut at converting QuickAbort from longjmp to exceptions. 4392 ** These exceptions have a single integer argument, which is the argument 4393 ** to longjmp in the original code (either 1 or 2). I don't know the 4394 ** significance of 1 vs 2: the calls to setjmp don't care. 4395 */ 4396 4397 const SM_EXC_TYPE_T EtypeQuickAbort = 4398 { 4399 SmExcTypeMagic, 4400 "E:mta.quickabort", 4401 "i", 4402 sm_etype_printf, 4403 "quick abort %0", 4404 }; 4405