main.c revision 173340
1/* 2 * Copyright (c) 1998-2006 Sendmail, Inc. and its suppliers. 3 * All rights reserved. 4 * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved. 5 * Copyright (c) 1988, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * By using this file, you agree to the terms and conditions set 9 * forth in the LICENSE file which can be found at the top level of 10 * the sendmail distribution. 11 * 12 */ 13 14#define _DEFINE 15#include <sendmail.h> 16#include <sm/sendmail.h> 17#include <sm/xtrap.h> 18#include <sm/signal.h> 19 20#ifndef lint 21SM_UNUSED(static char copyright[]) = 22"@(#) Copyright (c) 1998-2003 Sendmail, Inc. and its suppliers.\n\ 23 All rights reserved.\n\ 24 Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.\n\ 25 Copyright (c) 1988, 1993\n\ 26 The Regents of the University of California. All rights reserved.\n"; 27#endif /* ! lint */ 28 29SM_RCSID("@(#)$Id: main.c,v 8.963 2007/06/29 20:07:37 ca Exp $") 30 31 32#if NETINET || NETINET6 33# include <arpa/inet.h> 34#endif /* NETINET || NETINET6 */ 35 36/* for getcfname() */ 37#include <sendmail/pathnames.h> 38 39static SM_DEBUG_T 40DebugNoPRestart = SM_DEBUG_INITIALIZER("no_persistent_restart", 41 "@(#)$Debug: no_persistent_restart - don't restart, log only $"); 42 43static void dump_class __P((STAB *, int)); 44static void obsolete __P((char **)); 45static void testmodeline __P((char *, ENVELOPE *)); 46static char *getextenv __P((const char *)); 47static void sm_printoptions __P((char **)); 48static SIGFUNC_DECL intindebug __P((int)); 49static SIGFUNC_DECL sighup __P((int)); 50static SIGFUNC_DECL sigpipe __P((int)); 51static SIGFUNC_DECL sigterm __P((int)); 52#ifdef SIGUSR1 53static SIGFUNC_DECL sigusr1 __P((int)); 54#endif /* SIGUSR1 */ 55 56/* 57** SENDMAIL -- Post mail to a set of destinations. 58** 59** This is the basic mail router. All user mail programs should 60** call this routine to actually deliver mail. Sendmail in 61** turn calls a bunch of mail servers that do the real work of 62** delivering the mail. 63** 64** Sendmail is driven by settings read in from /etc/mail/sendmail.cf 65** (read by readcf.c). 66** 67** Usage: 68** /usr/lib/sendmail [flags] addr ... 69** 70** See the associated documentation for details. 71** 72** Authors: 73** Eric Allman, UCB/INGRES (until 10/81). 74** Britton-Lee, Inc., purveyors of fine 75** database computers (11/81 - 10/88). 76** International Computer Science Institute 77** (11/88 - 9/89). 78** UCB/Mammoth Project (10/89 - 7/95). 79** InReference, Inc. (8/95 - 1/97). 80** Sendmail, Inc. (1/98 - present). 81** The support of my employers is gratefully acknowledged. 82** Few of them (Britton-Lee in particular) have had 83** anything to gain from my involvement in this project. 84** 85** Gregory Neil Shapiro, 86** Worcester Polytechnic Institute (until 3/98). 87** Sendmail, Inc. (3/98 - present). 88** 89** Claus Assmann, 90** Sendmail, Inc. (12/98 - present). 91*/ 92 93char *FullName; /* sender's full name */ 94ENVELOPE BlankEnvelope; /* a "blank" envelope */ 95static ENVELOPE MainEnvelope; /* the envelope around the basic letter */ 96ADDRESS NullAddress = /* a null address */ 97 { "", "", NULL, "" }; 98char *CommandLineArgs; /* command line args for pid file */ 99bool Warn_Q_option = false; /* warn about Q option use */ 100static int MissingFds = 0; /* bit map of fds missing on startup */ 101char *Mbdb = "pw"; /* mailbox database defaults to /etc/passwd */ 102 103#ifdef NGROUPS_MAX 104GIDSET_T InitialGidSet[NGROUPS_MAX]; 105#endif /* NGROUPS_MAX */ 106 107#define MAXCONFIGLEVEL 10 /* highest config version level known */ 108 109#if SASL 110static sasl_callback_t srvcallbacks[] = 111{ 112 { SASL_CB_VERIFYFILE, &safesaslfile, NULL }, 113 { SASL_CB_PROXY_POLICY, &proxy_policy, NULL }, 114 { SASL_CB_LIST_END, NULL, NULL } 115}; 116#endif /* SASL */ 117 118unsigned int SubmitMode; 119int SyslogPrefixLen; /* estimated length of syslog prefix */ 120#define PIDLEN 6 /* pid length for computing SyslogPrefixLen */ 121#ifndef SL_FUDGE 122# define SL_FUDGE 10 /* fudge offset for SyslogPrefixLen */ 123#endif /* ! SL_FUDGE */ 124#define SLDLL 8 /* est. length of default syslog label */ 125 126 127/* Some options are dangerous to allow users to use in non-submit mode */ 128#define CHECK_AGAINST_OPMODE(cmd) \ 129{ \ 130 if (extraprivs && \ 131 OpMode != MD_DELIVER && OpMode != MD_SMTP && \ 132 OpMode != MD_ARPAFTP && \ 133 OpMode != MD_VERIFY && OpMode != MD_TEST) \ 134 { \ 135 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \ 136 "WARNING: Ignoring submission mode -%c option (not in submission mode)\n", \ 137 (cmd)); \ 138 break; \ 139 } \ 140 if (extraprivs && queuerun) \ 141 { \ 142 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, \ 143 "WARNING: Ignoring submission mode -%c option with -q\n", \ 144 (cmd)); \ 145 break; \ 146 } \ 147} 148 149int 150main(argc, argv, envp) 151 int argc; 152 char **argv; 153 char **envp; 154{ 155 register char *p; 156 char **av; 157 extern char Version[]; 158 char *ep, *from; 159 STAB *st; 160 register int i; 161 int j; 162 int dp; 163 int fill_errno; 164 int qgrp = NOQGRP; /* queue group to process */ 165 bool safecf = true; 166 BITMAP256 *p_flags = NULL; /* daemon flags */ 167 bool warn_C_flag = false; 168 bool auth = true; /* whether to set e_auth_param */ 169 char warn_f_flag = '\0'; 170 bool run_in_foreground = false; /* -bD mode */ 171 bool queuerun = false, debug = false; 172 struct passwd *pw; 173 struct hostent *hp; 174 char *nullserver = NULL; 175 char *authinfo = NULL; 176 char *sysloglabel = NULL; /* label for syslog */ 177 char *conffile = NULL; /* name of .cf file */ 178 char *queuegroup = NULL; /* queue group to process */ 179 char *quarantining = NULL; /* quarantine queue items? */ 180 bool extraprivs; 181 bool forged, negate; 182 bool queuepersistent = false; /* queue runner process runs forever */ 183 bool foregroundqueue = false; /* queue run in foreground */ 184 bool save_val; /* to save some bool var. */ 185 int cftype; /* which cf file to use? */ 186 SM_FILE_T *smdebug; 187 static time_t starttime = 0; /* when was process started */ 188 struct stat traf_st; /* for TrafficLog FIFO check */ 189 char buf[MAXLINE]; 190 char jbuf[MAXHOSTNAMELEN]; /* holds MyHostName */ 191 static char rnamebuf[MAXNAME]; /* holds RealUserName */ 192 char *emptyenviron[1]; 193#if STARTTLS 194 bool tls_ok; 195#endif /* STARTTLS */ 196 QUEUE_CHAR *new; 197 ENVELOPE *e; 198 extern int DtableSize; 199 extern int optind; 200 extern int opterr; 201 extern char *optarg; 202 extern char **environ; 203#if SASL 204 extern void sm_sasl_init __P((void)); 205#endif /* SASL */ 206 207#if USE_ENVIRON 208 envp = environ; 209#endif /* USE_ENVIRON */ 210 211 /* turn off profiling */ 212 SM_PROF(0); 213 214 /* install default exception handler */ 215 sm_exc_newthread(fatal_error); 216 217 /* set the default in/out channel so errors reported to screen */ 218 InChannel = smioin; 219 OutChannel = smioout; 220 221 /* 222 ** Check to see if we reentered. 223 ** This would normally happen if e_putheader or e_putbody 224 ** were NULL when invoked. 225 */ 226 227 if (starttime != 0) 228 { 229 syserr("main: reentered!"); 230 abort(); 231 } 232 starttime = curtime(); 233 234 /* avoid null pointer dereferences */ 235 TermEscape.te_rv_on = TermEscape.te_under_on = TermEscape.te_normal = ""; 236 237 RealUid = getuid(); 238 RealGid = getgid(); 239 240 /* Check if sendmail is running with extra privs */ 241 extraprivs = (RealUid != 0 && 242 (geteuid() != getuid() || getegid() != getgid())); 243 244 CurrentPid = getpid(); 245 246 /* get whatever .cf file is right for the opmode */ 247 cftype = SM_GET_RIGHT_CF; 248 249 /* in 4.4BSD, the table can be huge; impose a reasonable limit */ 250 DtableSize = getdtsize(); 251 if (DtableSize > 256) 252 DtableSize = 256; 253 254 /* 255 ** Be sure we have enough file descriptors. 256 ** But also be sure that 0, 1, & 2 are open. 257 */ 258 259 /* reset errno and fill_errno; the latter is used way down below */ 260 errno = fill_errno = 0; 261 fill_fd(STDIN_FILENO, NULL); 262 if (errno != 0) 263 fill_errno = errno; 264 fill_fd(STDOUT_FILENO, NULL); 265 if (errno != 0) 266 fill_errno = errno; 267 fill_fd(STDERR_FILENO, NULL); 268 if (errno != 0) 269 fill_errno = errno; 270 271 sm_closefrom(STDERR_FILENO + 1, DtableSize); 272 errno = 0; 273 smdebug = NULL; 274 275#if LOG 276# ifndef SM_LOG_STR 277# define SM_LOG_STR "sendmail" 278# endif /* ! SM_LOG_STR */ 279# ifdef LOG_MAIL 280 openlog(SM_LOG_STR, LOG_PID, LOG_MAIL); 281# else /* LOG_MAIL */ 282 openlog(SM_LOG_STR, LOG_PID); 283# endif /* LOG_MAIL */ 284#endif /* LOG */ 285 286 /* 287 ** Seed the random number generator. 288 ** Used for queue file names, picking a queue directory, and 289 ** MX randomization. 290 */ 291 292 seed_random(); 293 294 /* do machine-dependent initializations */ 295 init_md(argc, argv); 296 297 298 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + SL_FUDGE + SLDLL; 299 300 /* reset status from syserr() calls for missing file descriptors */ 301 Errors = 0; 302 ExitStat = EX_OK; 303 304 SubmitMode = SUBMIT_UNKNOWN; 305#if XDEBUG 306 checkfd012("after openlog"); 307#endif /* XDEBUG */ 308 309 tTsetup(tTdvect, sizeof(tTdvect), "0-99.1,*_trace_*.1"); 310 311#ifdef NGROUPS_MAX 312 /* save initial group set for future checks */ 313 i = getgroups(NGROUPS_MAX, InitialGidSet); 314 if (i <= 0) 315 { 316 InitialGidSet[0] = (GID_T) -1; 317 i = 0; 318 } 319 while (i < NGROUPS_MAX) 320 InitialGidSet[i++] = InitialGidSet[0]; 321#endif /* NGROUPS_MAX */ 322 323 /* drop group id privileges (RunAsUser not yet set) */ 324 dp = drop_privileges(false); 325 setstat(dp); 326 327#ifdef SIGUSR1 328 /* Only allow root (or non-set-*-ID binaries) to use SIGUSR1 */ 329 if (!extraprivs) 330 { 331 /* arrange to dump state on user-1 signal */ 332 (void) sm_signal(SIGUSR1, sigusr1); 333 } 334 else 335 { 336 /* ignore user-1 signal */ 337 (void) sm_signal(SIGUSR1, SIG_IGN); 338 } 339#endif /* SIGUSR1 */ 340 341 /* initialize for setproctitle */ 342 initsetproctitle(argc, argv, envp); 343 344 /* Handle any non-getoptable constructions. */ 345 obsolete(argv); 346 347 /* 348 ** Do a quick prescan of the argument list. 349 */ 350 351 352 /* find initial opMode */ 353 OpMode = MD_DELIVER; 354 av = argv; 355 p = strrchr(*av, '/'); 356 if (p++ == NULL) 357 p = *av; 358 if (strcmp(p, "newaliases") == 0) 359 OpMode = MD_INITALIAS; 360 else if (strcmp(p, "mailq") == 0) 361 OpMode = MD_PRINT; 362 else if (strcmp(p, "smtpd") == 0) 363 OpMode = MD_DAEMON; 364 else if (strcmp(p, "hoststat") == 0) 365 OpMode = MD_HOSTSTAT; 366 else if (strcmp(p, "purgestat") == 0) 367 OpMode = MD_PURGESTAT; 368 369#if defined(__osf__) || defined(_AIX3) 370# 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" 371#endif /* defined(__osf__) || defined(_AIX3) */ 372#if defined(sony_news) 373# 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:" 374#endif /* defined(sony_news) */ 375#ifndef OPTIONS 376# define OPTIONS "A:B:b:C:cD:d:e:F:f:Gh:IiL:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:" 377#endif /* ! OPTIONS */ 378 379 /* Set to 0 to allow -b; need to check optarg before using it! */ 380 opterr = 0; 381 while ((j = getopt(argc, argv, OPTIONS)) != -1) 382 { 383 switch (j) 384 { 385 case 'b': /* operations mode */ 386 j = (optarg == NULL) ? ' ' : *optarg; 387 switch (j) 388 { 389 case MD_DAEMON: 390 case MD_FGDAEMON: 391 case MD_SMTP: 392 case MD_INITALIAS: 393 case MD_DELIVER: 394 case MD_VERIFY: 395 case MD_TEST: 396 case MD_PRINT: 397 case MD_PRINTNQE: 398 case MD_HOSTSTAT: 399 case MD_PURGESTAT: 400 case MD_ARPAFTP: 401 OpMode = j; 402 break; 403 404 case MD_FREEZE: 405 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 406 "Frozen configurations unsupported\n"); 407 return EX_USAGE; 408 409 default: 410 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 411 "Invalid operation mode %c\n", 412 j); 413 return EX_USAGE; 414 } 415 break; 416 417 case 'D': 418 if (debug) 419 { 420 errno = 0; 421 syserr("-D file must be before -d"); 422 ExitStat = EX_USAGE; 423 break; 424 } 425 dp = drop_privileges(true); 426 setstat(dp); 427 smdebug = sm_io_open(SmFtStdio, SM_TIME_DEFAULT, 428 optarg, SM_IO_APPEND, NULL); 429 if (smdebug == NULL) 430 { 431 syserr("cannot open %s", optarg); 432 ExitStat = EX_CANTCREAT; 433 break; 434 } 435 sm_debug_setfile(smdebug); 436 break; 437 438 case 'd': 439 debug = true; 440 tTflag(optarg); 441 (void) sm_io_setvbuf(sm_debug_file(), SM_TIME_DEFAULT, 442 (char *) NULL, SM_IO_NBF, 443 SM_IO_BUFSIZ); 444 break; 445 446 case 'G': /* relay (gateway) submission */ 447 SubmitMode = SUBMIT_MTA; 448 break; 449 450 case 'L': 451 if (optarg == NULL) 452 { 453 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 454 "option requires an argument -- '%c'", 455 (char) j); 456 return EX_USAGE; 457 } 458 j = SM_MIN(strlen(optarg), 32) + 1; 459 sysloglabel = xalloc(j); 460 (void) sm_strlcpy(sysloglabel, optarg, j); 461 SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + 462 SL_FUDGE + j; 463 break; 464 465 case 'Q': 466 case 'q': 467 /* just check if it is there */ 468 queuerun = true; 469 break; 470 } 471 } 472 opterr = 1; 473 474 /* Don't leak queue information via debug flags */ 475 if (extraprivs && queuerun && debug) 476 { 477 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 478 "WARNING: Can not use -d with -q. Disabling debugging.\n"); 479 sm_debug_close(); 480 sm_debug_setfile(NULL); 481 (void) memset(tTdvect, '\0', sizeof(tTdvect)); 482 } 483 484#if LOG 485 if (sysloglabel != NULL) 486 { 487 /* Sanitize the string */ 488 for (p = sysloglabel; *p != '\0'; p++) 489 { 490 if (!isascii(*p) || !isprint(*p) || *p == '%') 491 *p = '*'; 492 } 493 closelog(); 494# ifdef LOG_MAIL 495 openlog(sysloglabel, LOG_PID, LOG_MAIL); 496# else /* LOG_MAIL */ 497 openlog(sysloglabel, LOG_PID); 498# endif /* LOG_MAIL */ 499 } 500#endif /* LOG */ 501 502 /* set up the blank envelope */ 503 BlankEnvelope.e_puthdr = putheader; 504 BlankEnvelope.e_putbody = putbody; 505 BlankEnvelope.e_xfp = NULL; 506 STRUCTCOPY(NullAddress, BlankEnvelope.e_from); 507 CurEnv = &BlankEnvelope; 508 STRUCTCOPY(NullAddress, MainEnvelope.e_from); 509 510 /* 511 ** Set default values for variables. 512 ** These cannot be in initialized data space. 513 */ 514 515 setdefaults(&BlankEnvelope); 516 initmacros(&BlankEnvelope); 517 518 /* reset macro */ 519 set_op_mode(OpMode); 520 if (OpMode == MD_DAEMON) 521 DaemonPid = CurrentPid; /* needed for finis() to work */ 522 523 pw = sm_getpwuid(RealUid); 524 if (pw != NULL) 525 (void) sm_strlcpy(rnamebuf, pw->pw_name, sizeof(rnamebuf)); 526 else 527 (void) sm_snprintf(rnamebuf, sizeof(rnamebuf), "Unknown UID %d", 528 (int) RealUid); 529 530 RealUserName = rnamebuf; 531 532 if (tTd(0, 101)) 533 { 534 sm_dprintf("Version %s\n", Version); 535 finis(false, true, EX_OK); 536 /* NOTREACHED */ 537 } 538 539 /* 540 ** if running non-set-user-ID binary as non-root, pretend 541 ** we are the RunAsUid 542 */ 543 544 if (RealUid != 0 && geteuid() == RealUid) 545 { 546 if (tTd(47, 1)) 547 sm_dprintf("Non-set-user-ID binary: RunAsUid = RealUid = %d\n", 548 (int) RealUid); 549 RunAsUid = RealUid; 550 } 551 else if (geteuid() != 0) 552 RunAsUid = geteuid(); 553 554 EffGid = getegid(); 555 if (RealUid != 0 && EffGid == RealGid) 556 RunAsGid = RealGid; 557 558 if (tTd(47, 5)) 559 { 560 sm_dprintf("main: e/ruid = %d/%d e/rgid = %d/%d\n", 561 (int) geteuid(), (int) getuid(), 562 (int) getegid(), (int) getgid()); 563 sm_dprintf("main: RunAsUser = %d:%d\n", 564 (int) RunAsUid, (int) RunAsGid); 565 } 566 567 /* save command line arguments */ 568 j = 0; 569 for (av = argv; *av != NULL; ) 570 j += strlen(*av++) + 1; 571 SaveArgv = (char **) xalloc(sizeof(char *) * (argc + 1)); 572 CommandLineArgs = xalloc(j); 573 p = CommandLineArgs; 574 for (av = argv, i = 0; *av != NULL; ) 575 { 576 int h; 577 578 SaveArgv[i++] = newstr(*av); 579 if (av != argv) 580 *p++ = ' '; 581 (void) sm_strlcpy(p, *av++, j); 582 h = strlen(p); 583 p += h; 584 j -= h + 1; 585 } 586 SaveArgv[i] = NULL; 587 588 if (tTd(0, 1)) 589 { 590 extern char *CompileOptions[]; 591 592 sm_dprintf("Version %s\n Compiled with:", Version); 593 sm_printoptions(CompileOptions); 594 } 595 if (tTd(0, 10)) 596 { 597 extern char *OsCompileOptions[]; 598 599 sm_dprintf(" OS Defines:"); 600 sm_printoptions(OsCompileOptions); 601#ifdef _PATH_UNIX 602 sm_dprintf("Kernel symbols:\t%s\n", _PATH_UNIX); 603#endif /* _PATH_UNIX */ 604 605 sm_dprintf(" Conf file:\t%s (default for MSP)\n", 606 getcfname(OpMode, SubmitMode, SM_GET_SUBMIT_CF, 607 conffile)); 608 sm_dprintf(" Conf file:\t%s (default for MTA)\n", 609 getcfname(OpMode, SubmitMode, SM_GET_SENDMAIL_CF, 610 conffile)); 611 sm_dprintf(" Pid file:\t%s (default)\n", PidFile); 612 } 613 614 if (tTd(0, 12)) 615 { 616 extern char *SmCompileOptions[]; 617 618 sm_dprintf(" libsm Defines:"); 619 sm_printoptions(SmCompileOptions); 620 } 621 622 if (tTd(0, 13)) 623 { 624 extern char *FFRCompileOptions[]; 625 626 sm_dprintf(" FFR Defines:"); 627 sm_printoptions(FFRCompileOptions); 628 } 629 630 /* clear sendmail's environment */ 631 ExternalEnviron = environ; 632 emptyenviron[0] = NULL; 633 environ = emptyenviron; 634 635 /* 636 ** restore any original TZ setting until TimeZoneSpec has been 637 ** determined - or early log messages may get bogus time stamps 638 */ 639 640 if ((p = getextenv("TZ")) != NULL) 641 { 642 char *tz; 643 int tzlen; 644 645 /* XXX check for reasonable length? */ 646 tzlen = strlen(p) + 4; 647 tz = xalloc(tzlen); 648 (void) sm_strlcpyn(tz, tzlen, 2, "TZ=", p); 649 650 /* XXX check return code? */ 651 (void) putenv(tz); 652 } 653 654 /* prime the child environment */ 655 sm_setuserenv("AGENT", "sendmail"); 656 657 (void) sm_signal(SIGPIPE, SIG_IGN); 658 OldUmask = umask(022); 659 FullName = getextenv("NAME"); 660 if (FullName != NULL) 661 FullName = newstr(FullName); 662 663 /* 664 ** Initialize name server if it is going to be used. 665 */ 666 667#if NAMED_BIND 668 if (!bitset(RES_INIT, _res.options)) 669 (void) res_init(); 670 if (tTd(8, 8)) 671 _res.options |= RES_DEBUG; 672 else 673 _res.options &= ~RES_DEBUG; 674# ifdef RES_NOALIASES 675 _res.options |= RES_NOALIASES; 676# endif /* RES_NOALIASES */ 677 TimeOuts.res_retry[RES_TO_DEFAULT] = _res.retry; 678 TimeOuts.res_retry[RES_TO_FIRST] = _res.retry; 679 TimeOuts.res_retry[RES_TO_NORMAL] = _res.retry; 680 TimeOuts.res_retrans[RES_TO_DEFAULT] = _res.retrans; 681 TimeOuts.res_retrans[RES_TO_FIRST] = _res.retrans; 682 TimeOuts.res_retrans[RES_TO_NORMAL] = _res.retrans; 683#endif /* NAMED_BIND */ 684 685 errno = 0; 686 from = NULL; 687 688 /* initialize some macros, etc. */ 689 init_vendor_macros(&BlankEnvelope); 690 691 /* version */ 692 macdefine(&BlankEnvelope.e_macro, A_PERM, 'v', Version); 693 694 /* hostname */ 695 hp = myhostname(jbuf, sizeof(jbuf)); 696 if (jbuf[0] != '\0') 697 { 698 struct utsname utsname; 699 700 if (tTd(0, 4)) 701 sm_dprintf("Canonical name: %s\n", jbuf); 702 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'w', jbuf); 703 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'j', jbuf); 704 setclass('w', jbuf); 705 706 p = strchr(jbuf, '.'); 707 if (p != NULL && p[1] != '\0') 708 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'm', &p[1]); 709 710 if (uname(&utsname) >= 0) 711 p = utsname.nodename; 712 else 713 { 714 if (tTd(0, 22)) 715 sm_dprintf("uname failed (%s)\n", 716 sm_errstring(errno)); 717 makelower(jbuf); 718 p = jbuf; 719 } 720 if (tTd(0, 4)) 721 sm_dprintf(" UUCP nodename: %s\n", p); 722 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'k', p); 723 setclass('k', p); 724 setclass('w', p); 725 } 726 if (hp != NULL) 727 { 728 for (av = hp->h_aliases; av != NULL && *av != NULL; av++) 729 { 730 if (tTd(0, 4)) 731 sm_dprintf("\ta.k.a.: %s\n", *av); 732 setclass('w', *av); 733 } 734#if NETINET || NETINET6 735 for (i = 0; i >= 0 && hp->h_addr_list[i] != NULL; i++) 736 { 737# if NETINET6 738 char *addr; 739 char buf6[INET6_ADDRSTRLEN]; 740 struct in6_addr ia6; 741# endif /* NETINET6 */ 742# if NETINET 743 struct in_addr ia; 744# endif /* NETINET */ 745 char ipbuf[103]; 746 747 ipbuf[0] = '\0'; 748 switch (hp->h_addrtype) 749 { 750# if NETINET 751 case AF_INET: 752 if (hp->h_length != INADDRSZ) 753 break; 754 755 memmove(&ia, hp->h_addr_list[i], INADDRSZ); 756 (void) sm_snprintf(ipbuf, sizeof(ipbuf), 757 "[%.100s]", inet_ntoa(ia)); 758 break; 759# endif /* NETINET */ 760 761# if NETINET6 762 case AF_INET6: 763 if (hp->h_length != IN6ADDRSZ) 764 break; 765 766 memmove(&ia6, hp->h_addr_list[i], IN6ADDRSZ); 767 addr = anynet_ntop(&ia6, buf6, sizeof(buf6)); 768 if (addr != NULL) 769 (void) sm_snprintf(ipbuf, sizeof(ipbuf), 770 "[%.100s]", addr); 771 break; 772# endif /* NETINET6 */ 773 } 774 if (ipbuf[0] == '\0') 775 break; 776 777 if (tTd(0, 4)) 778 sm_dprintf("\ta.k.a.: %s\n", ipbuf); 779 setclass('w', ipbuf); 780 } 781#endif /* NETINET || NETINET6 */ 782#if NETINET6 783 freehostent(hp); 784 hp = NULL; 785#endif /* NETINET6 */ 786 } 787 788 /* current time */ 789 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'b', arpadate((char *) NULL)); 790 791 /* current load average */ 792 sm_getla(); 793 794 QueueLimitRecipient = (QUEUE_CHAR *) NULL; 795 QueueLimitSender = (QUEUE_CHAR *) NULL; 796 QueueLimitId = (QUEUE_CHAR *) NULL; 797 QueueLimitQuarantine = (QUEUE_CHAR *) NULL; 798 799 /* 800 ** Crack argv. 801 */ 802 803 optind = 1; 804 while ((j = getopt(argc, argv, OPTIONS)) != -1) 805 { 806 switch (j) 807 { 808 case 'b': /* operations mode */ 809 /* already done */ 810 break; 811 812 case 'A': /* use Alternate sendmail/submit.cf */ 813 cftype = optarg[0] == 'c' ? SM_GET_SUBMIT_CF 814 : SM_GET_SENDMAIL_CF; 815 break; 816 817 case 'B': /* body type */ 818 CHECK_AGAINST_OPMODE(j); 819 BlankEnvelope.e_bodytype = newstr(optarg); 820 break; 821 822 case 'C': /* select configuration file (already done) */ 823 if (RealUid != 0) 824 warn_C_flag = true; 825 conffile = newstr(optarg); 826 dp = drop_privileges(true); 827 setstat(dp); 828 safecf = false; 829 break; 830 831 case 'D': 832 case 'd': /* debugging */ 833 /* already done */ 834 break; 835 836 case 'f': /* from address */ 837 case 'r': /* obsolete -f flag */ 838 CHECK_AGAINST_OPMODE(j); 839 if (from != NULL) 840 { 841 usrerr("More than one \"from\" person"); 842 ExitStat = EX_USAGE; 843 break; 844 } 845 if (optarg[0] == '\0') 846 from = newstr("<>"); 847 else 848 from = newstr(denlstring(optarg, true, true)); 849 if (strcmp(RealUserName, from) != 0) 850 warn_f_flag = j; 851 break; 852 853 case 'F': /* set full name */ 854 CHECK_AGAINST_OPMODE(j); 855 FullName = newstr(optarg); 856 break; 857 858 case 'G': /* relay (gateway) submission */ 859 /* already set */ 860 CHECK_AGAINST_OPMODE(j); 861 break; 862 863 case 'h': /* hop count */ 864 CHECK_AGAINST_OPMODE(j); 865 BlankEnvelope.e_hopcount = (short) strtol(optarg, &ep, 866 10); 867 (void) sm_snprintf(buf, sizeof(buf), "%d", 868 BlankEnvelope.e_hopcount); 869 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'c', buf); 870 871 if (*ep) 872 { 873 usrerr("Bad hop count (%s)", optarg); 874 ExitStat = EX_USAGE; 875 } 876 break; 877 878 case 'L': /* program label */ 879 /* already set */ 880 break; 881 882 case 'n': /* don't alias */ 883 CHECK_AGAINST_OPMODE(j); 884 NoAlias = true; 885 break; 886 887 case 'N': /* delivery status notifications */ 888 CHECK_AGAINST_OPMODE(j); 889 DefaultNotify |= QHASNOTIFY; 890 macdefine(&BlankEnvelope.e_macro, A_TEMP, 891 macid("{dsn_notify}"), optarg); 892 if (sm_strcasecmp(optarg, "never") == 0) 893 break; 894 for (p = optarg; p != NULL; optarg = p) 895 { 896 p = strchr(p, ','); 897 if (p != NULL) 898 *p++ = '\0'; 899 if (sm_strcasecmp(optarg, "success") == 0) 900 DefaultNotify |= QPINGONSUCCESS; 901 else if (sm_strcasecmp(optarg, "failure") == 0) 902 DefaultNotify |= QPINGONFAILURE; 903 else if (sm_strcasecmp(optarg, "delay") == 0) 904 DefaultNotify |= QPINGONDELAY; 905 else 906 { 907 usrerr("Invalid -N argument"); 908 ExitStat = EX_USAGE; 909 } 910 } 911 break; 912 913 case 'o': /* set option */ 914 setoption(*optarg, optarg + 1, false, true, 915 &BlankEnvelope); 916 break; 917 918 case 'O': /* set option (long form) */ 919 setoption(' ', optarg, false, true, &BlankEnvelope); 920 break; 921 922 case 'p': /* set protocol */ 923 CHECK_AGAINST_OPMODE(j); 924 p = strchr(optarg, ':'); 925 if (p != NULL) 926 { 927 *p++ = '\0'; 928 if (*p != '\0') 929 { 930 i = strlen(p) + 1; 931 ep = sm_malloc_x(i); 932 cleanstrcpy(ep, p, i); 933 macdefine(&BlankEnvelope.e_macro, 934 A_HEAP, 's', ep); 935 } 936 } 937 if (*optarg != '\0') 938 { 939 i = strlen(optarg) + 1; 940 ep = sm_malloc_x(i); 941 cleanstrcpy(ep, optarg, i); 942 macdefine(&BlankEnvelope.e_macro, A_HEAP, 943 'r', ep); 944 } 945 break; 946 947 case 'Q': /* change quarantining on queued items */ 948 /* sanity check */ 949 if (OpMode != MD_DELIVER && 950 OpMode != MD_QUEUERUN) 951 { 952 usrerr("Can not use -Q with -b%c", OpMode); 953 ExitStat = EX_USAGE; 954 break; 955 } 956 957 if (OpMode == MD_DELIVER) 958 set_op_mode(MD_QUEUERUN); 959 960 FullName = NULL; 961 962 quarantining = newstr(optarg); 963 break; 964 965 case 'q': /* run queue files at intervals */ 966 /* sanity check */ 967 if (OpMode != MD_DELIVER && 968 OpMode != MD_DAEMON && 969 OpMode != MD_FGDAEMON && 970 OpMode != MD_PRINT && 971 OpMode != MD_PRINTNQE && 972 OpMode != MD_QUEUERUN) 973 { 974 usrerr("Can not use -q with -b%c", OpMode); 975 ExitStat = EX_USAGE; 976 break; 977 } 978 979 /* don't override -bd, -bD or -bp */ 980 if (OpMode == MD_DELIVER) 981 set_op_mode(MD_QUEUERUN); 982 983 FullName = NULL; 984 negate = optarg[0] == '!'; 985 if (negate) 986 { 987 /* negate meaning of pattern match */ 988 optarg++; /* skip '!' for next switch */ 989 } 990 991 switch (optarg[0]) 992 { 993 case 'G': /* Limit by queue group name */ 994 if (negate) 995 { 996 usrerr("Can not use -q!G"); 997 ExitStat = EX_USAGE; 998 break; 999 } 1000 if (queuegroup != NULL) 1001 { 1002 usrerr("Can not use multiple -qG options"); 1003 ExitStat = EX_USAGE; 1004 break; 1005 } 1006 queuegroup = newstr(&optarg[1]); 1007 break; 1008 1009 case 'I': /* Limit by ID */ 1010 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1011 new->queue_match = newstr(&optarg[1]); 1012 new->queue_negate = negate; 1013 new->queue_next = QueueLimitId; 1014 QueueLimitId = new; 1015 break; 1016 1017 case 'R': /* Limit by recipient */ 1018 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1019 new->queue_match = newstr(&optarg[1]); 1020 new->queue_negate = negate; 1021 new->queue_next = QueueLimitRecipient; 1022 QueueLimitRecipient = new; 1023 break; 1024 1025 case 'S': /* Limit by sender */ 1026 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1027 new->queue_match = newstr(&optarg[1]); 1028 new->queue_negate = negate; 1029 new->queue_next = QueueLimitSender; 1030 QueueLimitSender = new; 1031 break; 1032 1033 case 'f': /* foreground queue run */ 1034 foregroundqueue = true; 1035 break; 1036 1037 case 'Q': /* Limit by quarantine message */ 1038 if (optarg[1] != '\0') 1039 { 1040 new = (QUEUE_CHAR *) xalloc(sizeof(*new)); 1041 new->queue_match = newstr(&optarg[1]); 1042 new->queue_negate = negate; 1043 new->queue_next = QueueLimitQuarantine; 1044 QueueLimitQuarantine = new; 1045 } 1046 QueueMode = QM_QUARANTINE; 1047 break; 1048 1049 case 'L': /* act on lost items */ 1050 QueueMode = QM_LOST; 1051 break; 1052 1053 case 'p': /* Persistent queue */ 1054 queuepersistent = true; 1055 if (QueueIntvl == 0) 1056 QueueIntvl = 1; 1057 if (optarg[1] == '\0') 1058 break; 1059 ++optarg; 1060 /* FALLTHROUGH */ 1061 1062 default: 1063 i = Errors; 1064 QueueIntvl = convtime(optarg, 'm'); 1065 if (QueueIntvl < 0) 1066 { 1067 usrerr("Invalid -q value"); 1068 ExitStat = EX_USAGE; 1069 } 1070 1071 /* check for bad conversion */ 1072 if (i < Errors) 1073 ExitStat = EX_USAGE; 1074 break; 1075 } 1076 break; 1077 1078 case 'R': /* DSN RET: what to return */ 1079 CHECK_AGAINST_OPMODE(j); 1080 if (bitset(EF_RET_PARAM, BlankEnvelope.e_flags)) 1081 { 1082 usrerr("Duplicate -R flag"); 1083 ExitStat = EX_USAGE; 1084 break; 1085 } 1086 BlankEnvelope.e_flags |= EF_RET_PARAM; 1087 if (sm_strcasecmp(optarg, "hdrs") == 0) 1088 BlankEnvelope.e_flags |= EF_NO_BODY_RETN; 1089 else if (sm_strcasecmp(optarg, "full") != 0) 1090 { 1091 usrerr("Invalid -R value"); 1092 ExitStat = EX_USAGE; 1093 } 1094 macdefine(&BlankEnvelope.e_macro, A_TEMP, 1095 macid("{dsn_ret}"), optarg); 1096 break; 1097 1098 case 't': /* read recipients from message */ 1099 CHECK_AGAINST_OPMODE(j); 1100 GrabTo = true; 1101 break; 1102 1103 case 'V': /* DSN ENVID: set "original" envelope id */ 1104 CHECK_AGAINST_OPMODE(j); 1105 if (!xtextok(optarg)) 1106 { 1107 usrerr("Invalid syntax in -V flag"); 1108 ExitStat = EX_USAGE; 1109 } 1110 else 1111 { 1112 BlankEnvelope.e_envid = newstr(optarg); 1113 macdefine(&BlankEnvelope.e_macro, A_TEMP, 1114 macid("{dsn_envid}"), optarg); 1115 } 1116 break; 1117 1118 case 'X': /* traffic log file */ 1119 dp = drop_privileges(true); 1120 setstat(dp); 1121 if (stat(optarg, &traf_st) == 0 && 1122 S_ISFIFO(traf_st.st_mode)) 1123 TrafficLogFile = sm_io_open(SmFtStdio, 1124 SM_TIME_DEFAULT, 1125 optarg, 1126 SM_IO_WRONLY, NULL); 1127 else 1128 TrafficLogFile = sm_io_open(SmFtStdio, 1129 SM_TIME_DEFAULT, 1130 optarg, 1131 SM_IO_APPEND, NULL); 1132 if (TrafficLogFile == NULL) 1133 { 1134 syserr("cannot open %s", optarg); 1135 ExitStat = EX_CANTCREAT; 1136 break; 1137 } 1138 (void) sm_io_setvbuf(TrafficLogFile, SM_TIME_DEFAULT, 1139 NULL, SM_IO_LBF, 0); 1140 break; 1141 1142 /* compatibility flags */ 1143 case 'c': /* connect to non-local mailers */ 1144 case 'i': /* don't let dot stop me */ 1145 case 'm': /* send to me too */ 1146 case 'T': /* set timeout interval */ 1147 case 'v': /* give blow-by-blow description */ 1148 setoption(j, "T", false, true, &BlankEnvelope); 1149 break; 1150 1151 case 'e': /* error message disposition */ 1152 case 'M': /* define macro */ 1153 setoption(j, optarg, false, true, &BlankEnvelope); 1154 break; 1155 1156 case 's': /* save From lines in headers */ 1157 setoption('f', "T", false, true, &BlankEnvelope); 1158 break; 1159 1160#ifdef DBM 1161 case 'I': /* initialize alias DBM file */ 1162 set_op_mode(MD_INITALIAS); 1163 break; 1164#endif /* DBM */ 1165 1166#if defined(__osf__) || defined(_AIX3) 1167 case 'x': /* random flag that OSF/1 & AIX mailx passes */ 1168 break; 1169#endif /* defined(__osf__) || defined(_AIX3) */ 1170#if defined(sony_news) 1171 case 'E': 1172 case 'J': /* ignore flags for Japanese code conversion 1173 implemented on Sony NEWS */ 1174 break; 1175#endif /* defined(sony_news) */ 1176 1177 default: 1178 finis(true, true, EX_USAGE); 1179 /* NOTREACHED */ 1180 break; 1181 } 1182 } 1183 1184 /* if we've had errors so far, exit now */ 1185 if ((ExitStat != EX_OK && OpMode != MD_TEST) || 1186 ExitStat == EX_OSERR) 1187 { 1188 finis(false, true, ExitStat); 1189 /* NOTREACHED */ 1190 } 1191 1192 if (bitset(SUBMIT_MTA, SubmitMode)) 1193 { 1194 /* If set daemon_flags on command line, don't reset it */ 1195 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL) 1196 macdefine(&BlankEnvelope.e_macro, A_PERM, 1197 macid("{daemon_flags}"), "CC f"); 1198 } 1199 else if (OpMode == MD_DELIVER || OpMode == MD_SMTP) 1200 { 1201 SubmitMode = SUBMIT_MSA; 1202 1203 /* If set daemon_flags on command line, don't reset it */ 1204 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL) 1205 macdefine(&BlankEnvelope.e_macro, A_PERM, 1206 macid("{daemon_flags}"), "c u"); 1207 } 1208 1209 /* 1210 ** Do basic initialization. 1211 ** Read system control file. 1212 ** Extract special fields for local use. 1213 */ 1214 1215#if XDEBUG 1216 checkfd012("before readcf"); 1217#endif /* XDEBUG */ 1218 vendor_pre_defaults(&BlankEnvelope); 1219 1220 readcf(getcfname(OpMode, SubmitMode, cftype, conffile), 1221 safecf, &BlankEnvelope); 1222#if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) 1223 ConfigFileRead = true; 1224#endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */ 1225 vendor_post_defaults(&BlankEnvelope); 1226 1227 /* now we can complain about missing fds */ 1228 if (MissingFds != 0 && LogLevel > 8) 1229 { 1230 char mbuf[MAXLINE]; 1231 1232 mbuf[0] = '\0'; 1233 if (bitset(1 << STDIN_FILENO, MissingFds)) 1234 (void) sm_strlcat(mbuf, ", stdin", sizeof(mbuf)); 1235 if (bitset(1 << STDOUT_FILENO, MissingFds)) 1236 (void) sm_strlcat(mbuf, ", stdout", sizeof(mbuf)); 1237 if (bitset(1 << STDERR_FILENO, MissingFds)) 1238 (void) sm_strlcat(mbuf, ", stderr", sizeof(mbuf)); 1239 1240 /* Notice: fill_errno is from high above: fill_fd() */ 1241 sm_syslog(LOG_WARNING, NOQID, 1242 "File descriptors missing on startup: %s; %s", 1243 &mbuf[2], sm_errstring(fill_errno)); 1244 } 1245 1246 /* Remove the ability for a normal user to send signals */ 1247 if (RealUid != 0 && RealUid != geteuid()) 1248 { 1249 uid_t new_uid = geteuid(); 1250 1251#if HASSETREUID 1252 /* 1253 ** Since we can differentiate between uid and euid, 1254 ** make the uid a different user so the real user 1255 ** can't send signals. However, it doesn't need to be 1256 ** root (euid has root). 1257 */ 1258 1259 if (new_uid == 0) 1260 new_uid = DefUid; 1261 if (tTd(47, 5)) 1262 sm_dprintf("Changing real uid to %d\n", (int) new_uid); 1263 if (setreuid(new_uid, geteuid()) < 0) 1264 { 1265 syserr("main: setreuid(%d, %d) failed", 1266 (int) new_uid, (int) geteuid()); 1267 finis(false, true, EX_OSERR); 1268 /* NOTREACHED */ 1269 } 1270 if (tTd(47, 10)) 1271 sm_dprintf("Now running as e/ruid %d:%d\n", 1272 (int) geteuid(), (int) getuid()); 1273#else /* HASSETREUID */ 1274 /* 1275 ** Have to change both effective and real so need to 1276 ** change them both to effective to keep privs. 1277 */ 1278 1279 if (tTd(47, 5)) 1280 sm_dprintf("Changing uid to %d\n", (int) new_uid); 1281 if (setuid(new_uid) < 0) 1282 { 1283 syserr("main: setuid(%d) failed", (int) new_uid); 1284 finis(false, true, EX_OSERR); 1285 /* NOTREACHED */ 1286 } 1287 if (tTd(47, 10)) 1288 sm_dprintf("Now running as e/ruid %d:%d\n", 1289 (int) geteuid(), (int) getuid()); 1290#endif /* HASSETREUID */ 1291 } 1292 1293#if NAMED_BIND 1294 if (FallbackMX != NULL) 1295 (void) getfallbackmxrr(FallbackMX); 1296#endif /* NAMED_BIND */ 1297 1298 if (SuperSafe == SAFE_INTERACTIVE && CurEnv->e_sendmode != SM_DELIVER) 1299 { 1300 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1301 "WARNING: SuperSafe=interactive should only be used with\n DeliveryMode=interactive\n"); 1302 } 1303 1304 if (UseMSP && (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON)) 1305 { 1306 usrerr("Mail submission program cannot be used as daemon"); 1307 finis(false, true, EX_USAGE); 1308 } 1309 1310 if (OpMode == MD_DELIVER || OpMode == MD_SMTP || 1311 OpMode == MD_QUEUERUN || OpMode == MD_ARPAFTP || 1312 OpMode == MD_DAEMON || OpMode == MD_FGDAEMON) 1313 makeworkgroups(); 1314 1315 /* set up the basic signal handlers */ 1316 if (sm_signal(SIGINT, SIG_IGN) != SIG_IGN) 1317 (void) sm_signal(SIGINT, intsig); 1318 (void) sm_signal(SIGTERM, intsig); 1319 1320 /* Enforce use of local time (null string overrides this) */ 1321 if (TimeZoneSpec == NULL) 1322 unsetenv("TZ"); 1323 else if (TimeZoneSpec[0] != '\0') 1324 sm_setuserenv("TZ", TimeZoneSpec); 1325 else 1326 sm_setuserenv("TZ", NULL); 1327 tzset(); 1328 1329 /* initialize mailbox database */ 1330 i = sm_mbdb_initialize(Mbdb); 1331 if (i != EX_OK) 1332 { 1333 usrerr("Can't initialize mailbox database \"%s\": %s", 1334 Mbdb, sm_strexit(i)); 1335 ExitStat = i; 1336 } 1337 1338 /* avoid denial-of-service attacks */ 1339 resetlimits(); 1340 1341 if (OpMode == MD_TEST) 1342 { 1343 /* can't be done after readcf if RunAs* is used */ 1344 dp = drop_privileges(true); 1345 if (dp != EX_OK) 1346 { 1347 finis(false, true, dp); 1348 /* NOTREACHED */ 1349 } 1350 } 1351 else if (OpMode != MD_DAEMON && OpMode != MD_FGDAEMON) 1352 { 1353 /* drop privileges -- daemon mode done after socket/bind */ 1354 dp = drop_privileges(false); 1355 setstat(dp); 1356 if (dp == EX_OK && UseMSP && (geteuid() == 0 || getuid() == 0)) 1357 { 1358 usrerr("Mail submission program must have RunAsUser set to non root user"); 1359 finis(false, true, EX_CONFIG); 1360 /* NOTREACHED */ 1361 } 1362 } 1363 1364#if NAMED_BIND 1365 _res.retry = TimeOuts.res_retry[RES_TO_DEFAULT]; 1366 _res.retrans = TimeOuts.res_retrans[RES_TO_DEFAULT]; 1367#endif /* NAMED_BIND */ 1368 1369 /* 1370 ** Find our real host name for future logging. 1371 */ 1372 1373 authinfo = getauthinfo(STDIN_FILENO, &forged); 1374 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 1375 1376 /* suppress error printing if errors mailed back or whatever */ 1377 if (BlankEnvelope.e_errormode != EM_PRINT) 1378 HoldErrs = true; 1379 1380 /* set up the $=m class now, after .cf has a chance to redefine $m */ 1381 expand("\201m", jbuf, sizeof(jbuf), &BlankEnvelope); 1382 if (jbuf[0] != '\0') 1383 setclass('m', jbuf); 1384 1385 /* probe interfaces and locate any additional names */ 1386 if (DontProbeInterfaces != DPI_PROBENONE) 1387 load_if_names(); 1388 1389 if (tTd(0, 10)) 1390 { 1391 char pidpath[MAXPATHLEN]; 1392 1393 /* Now we know which .cf file we use */ 1394 sm_dprintf(" Conf file:\t%s (selected)\n", 1395 getcfname(OpMode, SubmitMode, cftype, conffile)); 1396 expand(PidFile, pidpath, sizeof(pidpath), &BlankEnvelope); 1397 sm_dprintf(" Pid file:\t%s (selected)\n", pidpath); 1398 } 1399 1400 if (tTd(0, 1)) 1401 { 1402 sm_dprintf("\n============ SYSTEM IDENTITY (after readcf) ============"); 1403 sm_dprintf("\n (short domain name) $w = "); 1404 xputs(sm_debug_file(), macvalue('w', &BlankEnvelope)); 1405 sm_dprintf("\n (canonical domain name) $j = "); 1406 xputs(sm_debug_file(), macvalue('j', &BlankEnvelope)); 1407 sm_dprintf("\n (subdomain name) $m = "); 1408 xputs(sm_debug_file(), macvalue('m', &BlankEnvelope)); 1409 sm_dprintf("\n (node name) $k = "); 1410 xputs(sm_debug_file(), macvalue('k', &BlankEnvelope)); 1411 sm_dprintf("\n========================================================\n\n"); 1412 } 1413 1414 /* 1415 ** Do more command line checking -- these are things that 1416 ** have to modify the results of reading the config file. 1417 */ 1418 1419 /* process authorization warnings from command line */ 1420 if (warn_C_flag) 1421 auth_warning(&BlankEnvelope, "Processed by %s with -C %s", 1422 RealUserName, conffile); 1423 if (Warn_Q_option && !wordinclass(RealUserName, 't')) 1424 auth_warning(&BlankEnvelope, "Processed from queue %s", 1425 QueueDir); 1426 if (sysloglabel != NULL && !wordinclass(RealUserName, 't') && 1427 RealUid != 0 && RealUid != TrustedUid && LogLevel > 1) 1428 sm_syslog(LOG_WARNING, NOQID, "user %d changed syslog label", 1429 (int) RealUid); 1430 1431 /* check body type for legality */ 1432 i = check_bodytype(BlankEnvelope.e_bodytype); 1433 if (i == BODYTYPE_ILLEGAL) 1434 { 1435 usrerr("Illegal body type %s", BlankEnvelope.e_bodytype); 1436 BlankEnvelope.e_bodytype = NULL; 1437 } 1438 else if (i != BODYTYPE_NONE) 1439 SevenBitInput = (i == BODYTYPE_7BIT); 1440 1441 /* tweak default DSN notifications */ 1442 if (DefaultNotify == 0) 1443 DefaultNotify = QPINGONFAILURE|QPINGONDELAY; 1444 1445 /* check for sane configuration level */ 1446 if (ConfigLevel > MAXCONFIGLEVEL) 1447 { 1448 syserr("Warning: .cf version level (%d) exceeds sendmail version %s functionality (%d)", 1449 ConfigLevel, Version, MAXCONFIGLEVEL); 1450 } 1451 1452 /* need MCI cache to have persistence */ 1453 if (HostStatDir != NULL && MaxMciCache == 0) 1454 { 1455 HostStatDir = NULL; 1456 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1457 "Warning: HostStatusDirectory disabled with ConnectionCacheSize = 0\n"); 1458 } 1459 1460 /* need HostStatusDir in order to have SingleThreadDelivery */ 1461 if (SingleThreadDelivery && HostStatDir == NULL) 1462 { 1463 SingleThreadDelivery = false; 1464 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1465 "Warning: HostStatusDirectory required for SingleThreadDelivery\n"); 1466 } 1467 1468#if _FFR_MEMSTAT 1469 j = sm_memstat_open(); 1470 if (j < 0 && (RefuseLowMem > 0 || QueueLowMem > 0) && LogLevel > 4) 1471 { 1472 sm_syslog(LOG_WARNING, NOQID, 1473 "cannot get memory statistics, settings ignored, error=%d" 1474 , j); 1475 } 1476#endif /* _FFR_MEMSTAT */ 1477 1478 /* check for permissions */ 1479 if (RealUid != 0 && 1480 RealUid != TrustedUid) 1481 { 1482 char *action = NULL; 1483 1484 switch (OpMode) 1485 { 1486 case MD_QUEUERUN: 1487 if (quarantining != NULL) 1488 action = "quarantine jobs"; 1489 else 1490 { 1491 /* Normal users can do a single queue run */ 1492 if (QueueIntvl == 0) 1493 break; 1494 } 1495 1496 /* but not persistent queue runners */ 1497 if (action == NULL) 1498 action = "start a queue runner daemon"; 1499 /* FALLTHROUGH */ 1500 1501 case MD_PURGESTAT: 1502 if (action == NULL) 1503 action = "purge host status"; 1504 /* FALLTHROUGH */ 1505 1506 case MD_DAEMON: 1507 case MD_FGDAEMON: 1508 if (action == NULL) 1509 action = "run daemon"; 1510 1511 if (tTd(65, 1)) 1512 sm_dprintf("Deny user %d attempt to %s\n", 1513 (int) RealUid, action); 1514 1515 if (LogLevel > 1) 1516 sm_syslog(LOG_ALERT, NOQID, 1517 "user %d attempted to %s", 1518 (int) RealUid, action); 1519 HoldErrs = false; 1520 usrerr("Permission denied (real uid not trusted)"); 1521 finis(false, true, EX_USAGE); 1522 /* NOTREACHED */ 1523 break; 1524 1525 case MD_VERIFY: 1526 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags)) 1527 { 1528 /* 1529 ** If -bv and RestrictExpand, 1530 ** drop privs to prevent normal 1531 ** users from reading private 1532 ** aliases/forwards/:include:s 1533 */ 1534 1535 if (tTd(65, 1)) 1536 sm_dprintf("Drop privs for user %d attempt to expand (RestrictExpand)\n", 1537 (int) RealUid); 1538 1539 dp = drop_privileges(true); 1540 1541 /* Fake address safety */ 1542 if (tTd(65, 1)) 1543 sm_dprintf("Faking DontBlameSendmail=NonRootSafeAddr\n"); 1544 setbitn(DBS_NONROOTSAFEADDR, DontBlameSendmail); 1545 1546 if (dp != EX_OK) 1547 { 1548 if (tTd(65, 1)) 1549 sm_dprintf("Failed to drop privs for user %d attempt to expand, exiting\n", 1550 (int) RealUid); 1551 CurEnv->e_id = NULL; 1552 finis(true, true, dp); 1553 /* NOTREACHED */ 1554 } 1555 } 1556 break; 1557 1558 case MD_TEST: 1559 case MD_PRINT: 1560 case MD_PRINTNQE: 1561 case MD_FREEZE: 1562 case MD_HOSTSTAT: 1563 /* Nothing special to check */ 1564 break; 1565 1566 case MD_INITALIAS: 1567 if (!wordinclass(RealUserName, 't')) 1568 { 1569 if (tTd(65, 1)) 1570 sm_dprintf("Deny user %d attempt to rebuild the alias map\n", 1571 (int) RealUid); 1572 if (LogLevel > 1) 1573 sm_syslog(LOG_ALERT, NOQID, 1574 "user %d attempted to rebuild the alias map", 1575 (int) RealUid); 1576 HoldErrs = false; 1577 usrerr("Permission denied (real uid not trusted)"); 1578 finis(false, true, EX_USAGE); 1579 /* NOTREACHED */ 1580 } 1581 if (UseMSP) 1582 { 1583 HoldErrs = false; 1584 usrerr("User %d cannot rebuild aliases in mail submission program", 1585 (int) RealUid); 1586 finis(false, true, EX_USAGE); 1587 /* NOTREACHED */ 1588 } 1589 /* FALLTHROUGH */ 1590 1591 default: 1592 if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags) && 1593 Verbose != 0) 1594 { 1595 /* 1596 ** If -v and RestrictExpand, reset 1597 ** Verbose to prevent normal users 1598 ** from seeing the expansion of 1599 ** aliases/forwards/:include:s 1600 */ 1601 1602 if (tTd(65, 1)) 1603 sm_dprintf("Dropping verbosity for user %d (RestrictExpand)\n", 1604 (int) RealUid); 1605 Verbose = 0; 1606 } 1607 break; 1608 } 1609 } 1610 1611 if (MeToo) 1612 BlankEnvelope.e_flags |= EF_METOO; 1613 1614 switch (OpMode) 1615 { 1616 case MD_TEST: 1617 /* don't have persistent host status in test mode */ 1618 HostStatDir = NULL; 1619 if (Verbose == 0) 1620 Verbose = 2; 1621 BlankEnvelope.e_errormode = EM_PRINT; 1622 HoldErrs = false; 1623 break; 1624 1625 case MD_VERIFY: 1626 BlankEnvelope.e_errormode = EM_PRINT; 1627 HoldErrs = false; 1628 /* arrange to exit cleanly on hangup signal */ 1629 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL) 1630 (void) sm_signal(SIGHUP, intsig); 1631 if (geteuid() != 0) 1632 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1633 "Notice: -bv may give misleading output for non-privileged user\n"); 1634 break; 1635 1636 case MD_FGDAEMON: 1637 run_in_foreground = true; 1638 set_op_mode(MD_DAEMON); 1639 /* FALLTHROUGH */ 1640 1641 case MD_DAEMON: 1642 vendor_daemon_setup(&BlankEnvelope); 1643 1644 /* remove things that don't make sense in daemon mode */ 1645 FullName = NULL; 1646 GrabTo = false; 1647 1648 /* arrange to restart on hangup signal */ 1649 if (SaveArgv[0] == NULL || SaveArgv[0][0] != '/') 1650 sm_syslog(LOG_WARNING, NOQID, 1651 "daemon invoked without full pathname; kill -1 won't work"); 1652 break; 1653 1654 case MD_INITALIAS: 1655 Verbose = 2; 1656 BlankEnvelope.e_errormode = EM_PRINT; 1657 HoldErrs = false; 1658 /* FALLTHROUGH */ 1659 1660 default: 1661 /* arrange to exit cleanly on hangup signal */ 1662 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL) 1663 (void) sm_signal(SIGHUP, intsig); 1664 break; 1665 } 1666 1667 /* special considerations for FullName */ 1668 if (FullName != NULL) 1669 { 1670 char *full = NULL; 1671 1672 /* full names can't have newlines */ 1673 if (strchr(FullName, '\n') != NULL) 1674 { 1675 full = newstr(denlstring(FullName, true, true)); 1676 FullName = full; 1677 } 1678 1679 /* check for characters that may have to be quoted */ 1680 if (!rfc822_string(FullName)) 1681 { 1682 /* 1683 ** Quote a full name with special characters 1684 ** as a comment so crackaddr() doesn't destroy 1685 ** the name portion of the address. 1686 */ 1687 1688 FullName = addquotes(FullName, NULL); 1689 if (full != NULL) 1690 sm_free(full); /* XXX */ 1691 } 1692 } 1693 1694 /* do heuristic mode adjustment */ 1695 if (Verbose) 1696 { 1697 /* turn off noconnect option */ 1698 setoption('c', "F", true, false, &BlankEnvelope); 1699 1700 /* turn on interactive delivery */ 1701 setoption('d', "", true, false, &BlankEnvelope); 1702 } 1703 1704#ifdef VENDOR_CODE 1705 /* check for vendor mismatch */ 1706 if (VendorCode != VENDOR_CODE) 1707 { 1708 message("Warning: .cf file vendor code mismatch: sendmail expects vendor %s, .cf file vendor is %s", 1709 getvendor(VENDOR_CODE), getvendor(VendorCode)); 1710 } 1711#endif /* VENDOR_CODE */ 1712 1713 /* check for out of date configuration level */ 1714 if (ConfigLevel < MAXCONFIGLEVEL) 1715 { 1716 message("Warning: .cf file is out of date: sendmail %s supports version %d, .cf file is version %d", 1717 Version, MAXCONFIGLEVEL, ConfigLevel); 1718 } 1719 1720 if (ConfigLevel < 3) 1721 UseErrorsTo = true; 1722 1723 /* set options that were previous macros */ 1724 if (SmtpGreeting == NULL) 1725 { 1726 if (ConfigLevel < 7 && 1727 (p = macvalue('e', &BlankEnvelope)) != NULL) 1728 SmtpGreeting = newstr(p); 1729 else 1730 SmtpGreeting = "\201j Sendmail \201v ready at \201b"; 1731 } 1732 if (UnixFromLine == NULL) 1733 { 1734 if (ConfigLevel < 7 && 1735 (p = macvalue('l', &BlankEnvelope)) != NULL) 1736 UnixFromLine = newstr(p); 1737 else 1738 UnixFromLine = "From \201g \201d"; 1739 } 1740 SmtpError[0] = '\0'; 1741 1742 /* our name for SMTP codes */ 1743 expand("\201j", jbuf, sizeof(jbuf), &BlankEnvelope); 1744 if (jbuf[0] == '\0') 1745 PSTRSET(MyHostName, "localhost"); 1746 else 1747 PSTRSET(MyHostName, jbuf); 1748 if (strchr(MyHostName, '.') == NULL) 1749 message("WARNING: local host name (%s) is not qualified; see cf/README: WHO AM I?", 1750 MyHostName); 1751 1752 /* make certain that this name is part of the $=w class */ 1753 setclass('w', MyHostName); 1754 1755 /* fill in the structure of the *default* queue */ 1756 st = stab("mqueue", ST_QUEUE, ST_FIND); 1757 if (st == NULL) 1758 syserr("No default queue (mqueue) defined"); 1759 else 1760 set_def_queueval(st->s_quegrp, true); 1761 1762 /* the indices of built-in mailers */ 1763 st = stab("local", ST_MAILER, ST_FIND); 1764 if (st != NULL) 1765 LocalMailer = st->s_mailer; 1766 else if (OpMode != MD_TEST || !warn_C_flag) 1767 syserr("No local mailer defined"); 1768 1769 st = stab("prog", ST_MAILER, ST_FIND); 1770 if (st == NULL) 1771 syserr("No prog mailer defined"); 1772 else 1773 { 1774 ProgMailer = st->s_mailer; 1775 clrbitn(M_MUSER, ProgMailer->m_flags); 1776 } 1777 1778 st = stab("*file*", ST_MAILER, ST_FIND); 1779 if (st == NULL) 1780 syserr("No *file* mailer defined"); 1781 else 1782 { 1783 FileMailer = st->s_mailer; 1784 clrbitn(M_MUSER, FileMailer->m_flags); 1785 } 1786 1787 st = stab("*include*", ST_MAILER, ST_FIND); 1788 if (st == NULL) 1789 syserr("No *include* mailer defined"); 1790 else 1791 InclMailer = st->s_mailer; 1792 1793 if (ConfigLevel < 6) 1794 { 1795 /* heuristic tweaking of local mailer for back compat */ 1796 if (LocalMailer != NULL) 1797 { 1798 setbitn(M_ALIASABLE, LocalMailer->m_flags); 1799 setbitn(M_HASPWENT, LocalMailer->m_flags); 1800 setbitn(M_TRYRULESET5, LocalMailer->m_flags); 1801 setbitn(M_CHECKINCLUDE, LocalMailer->m_flags); 1802 setbitn(M_CHECKPROG, LocalMailer->m_flags); 1803 setbitn(M_CHECKFILE, LocalMailer->m_flags); 1804 setbitn(M_CHECKUDB, LocalMailer->m_flags); 1805 } 1806 if (ProgMailer != NULL) 1807 setbitn(M_RUNASRCPT, ProgMailer->m_flags); 1808 if (FileMailer != NULL) 1809 setbitn(M_RUNASRCPT, FileMailer->m_flags); 1810 } 1811 if (ConfigLevel < 7) 1812 { 1813 if (LocalMailer != NULL) 1814 setbitn(M_VRFY250, LocalMailer->m_flags); 1815 if (ProgMailer != NULL) 1816 setbitn(M_VRFY250, ProgMailer->m_flags); 1817 if (FileMailer != NULL) 1818 setbitn(M_VRFY250, FileMailer->m_flags); 1819 } 1820 1821 /* MIME Content-Types that cannot be transfer encoded */ 1822 setclass('n', "multipart/signed"); 1823 1824 /* MIME message/xxx subtypes that can be treated as messages */ 1825 setclass('s', "rfc822"); 1826 1827 /* MIME Content-Transfer-Encodings that can be encoded */ 1828 setclass('e', "7bit"); 1829 setclass('e', "8bit"); 1830 setclass('e', "binary"); 1831 1832#ifdef USE_B_CLASS 1833 /* MIME Content-Types that should be treated as binary */ 1834 setclass('b', "image"); 1835 setclass('b', "audio"); 1836 setclass('b', "video"); 1837 setclass('b', "application/octet-stream"); 1838#endif /* USE_B_CLASS */ 1839 1840 /* MIME headers which have fields to check for overflow */ 1841 setclass(macid("{checkMIMEFieldHeaders}"), "content-disposition"); 1842 setclass(macid("{checkMIMEFieldHeaders}"), "content-type"); 1843 1844 /* MIME headers to check for length overflow */ 1845 setclass(macid("{checkMIMETextHeaders}"), "content-description"); 1846 1847 /* MIME headers to check for overflow and rebalance */ 1848 setclass(macid("{checkMIMEHeaders}"), "content-disposition"); 1849 setclass(macid("{checkMIMEHeaders}"), "content-id"); 1850 setclass(macid("{checkMIMEHeaders}"), "content-transfer-encoding"); 1851 setclass(macid("{checkMIMEHeaders}"), "content-type"); 1852 setclass(macid("{checkMIMEHeaders}"), "mime-version"); 1853 1854 /* Macros to save in the queue file -- don't remove any */ 1855 setclass(macid("{persistentMacros}"), "r"); 1856 setclass(macid("{persistentMacros}"), "s"); 1857 setclass(macid("{persistentMacros}"), "_"); 1858 setclass(macid("{persistentMacros}"), "{if_addr}"); 1859 setclass(macid("{persistentMacros}"), "{daemon_flags}"); 1860 1861 /* operate in queue directory */ 1862 if (QueueDir == NULL || *QueueDir == '\0') 1863 { 1864 if (OpMode != MD_TEST) 1865 { 1866 syserr("QueueDirectory (Q) option must be set"); 1867 ExitStat = EX_CONFIG; 1868 } 1869 } 1870 else 1871 { 1872 if (OpMode != MD_TEST) 1873 setup_queues(OpMode == MD_DAEMON); 1874 } 1875 1876 /* check host status directory for validity */ 1877 if (HostStatDir != NULL && !path_is_dir(HostStatDir, false)) 1878 { 1879 /* cannot use this value */ 1880 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 1881 "Warning: Cannot use HostStatusDirectory = %s: %s\n", 1882 HostStatDir, sm_errstring(errno)); 1883 HostStatDir = NULL; 1884 } 1885 1886 if (OpMode == MD_QUEUERUN && 1887 RealUid != 0 && bitset(PRIV_RESTRICTQRUN, PrivacyFlags)) 1888 { 1889 struct stat stbuf; 1890 1891 /* check to see if we own the queue directory */ 1892 if (stat(".", &stbuf) < 0) 1893 syserr("main: cannot stat %s", QueueDir); 1894 if (stbuf.st_uid != RealUid) 1895 { 1896 /* nope, really a botch */ 1897 HoldErrs = false; 1898 usrerr("You do not have permission to process the queue"); 1899 finis(false, true, EX_NOPERM); 1900 /* NOTREACHED */ 1901 } 1902 } 1903 1904#if MILTER 1905 /* sanity checks on milter filters */ 1906 if (OpMode == MD_DAEMON || OpMode == MD_SMTP) 1907 { 1908 milter_config(InputFilterList, InputFilters, MAXFILTERS); 1909 setup_daemon_milters(); 1910 } 1911#endif /* MILTER */ 1912 1913 /* Convert queuegroup string to qgrp number */ 1914 if (queuegroup != NULL) 1915 { 1916 qgrp = name2qid(queuegroup); 1917 if (qgrp == NOQGRP) 1918 { 1919 HoldErrs = false; 1920 usrerr("Queue group %s unknown", queuegroup); 1921 finis(false, true, ExitStat); 1922 /* NOTREACHED */ 1923 } 1924 } 1925 1926 /* if we've had errors so far, exit now */ 1927 if (ExitStat != EX_OK && OpMode != MD_TEST) 1928 { 1929 finis(false, true, ExitStat); 1930 /* NOTREACHED */ 1931 } 1932 1933#if SASL 1934 /* sendmail specific SASL initialization */ 1935 sm_sasl_init(); 1936#endif /* SASL */ 1937 1938#if XDEBUG 1939 checkfd012("before main() initmaps"); 1940#endif /* XDEBUG */ 1941 1942 /* 1943 ** Do operation-mode-dependent initialization. 1944 */ 1945 1946 switch (OpMode) 1947 { 1948 case MD_PRINT: 1949 /* print the queue */ 1950 HoldErrs = false; 1951 dropenvelope(&BlankEnvelope, true, false); 1952 (void) sm_signal(SIGPIPE, sigpipe); 1953 if (qgrp != NOQGRP) 1954 { 1955 int j; 1956 1957 /* Selecting a particular queue group to run */ 1958 for (j = 0; j < Queue[qgrp]->qg_numqueues; j++) 1959 { 1960 if (StopRequest) 1961 stop_sendmail(); 1962 (void) print_single_queue(qgrp, j); 1963 } 1964 finis(false, true, EX_OK); 1965 /* NOTREACHED */ 1966 } 1967 printqueue(); 1968 finis(false, true, EX_OK); 1969 /* NOTREACHED */ 1970 break; 1971 1972 case MD_PRINTNQE: 1973 /* print number of entries in queue */ 1974 dropenvelope(&BlankEnvelope, true, false); 1975 (void) sm_signal(SIGPIPE, sigpipe); 1976 printnqe(smioout, NULL); 1977 finis(false, true, EX_OK); 1978 /* NOTREACHED */ 1979 break; 1980 1981 case MD_QUEUERUN: 1982 /* only handle quarantining here */ 1983 if (quarantining == NULL) 1984 break; 1985 1986 if (QueueMode != QM_QUARANTINE && 1987 QueueMode != QM_NORMAL) 1988 { 1989 HoldErrs = false; 1990 usrerr("Can not use -Q with -q%c", QueueMode); 1991 ExitStat = EX_USAGE; 1992 finis(false, true, ExitStat); 1993 /* NOTREACHED */ 1994 } 1995 quarantine_queue(quarantining, qgrp); 1996 finis(false, true, EX_OK); 1997 break; 1998 1999 case MD_HOSTSTAT: 2000 (void) sm_signal(SIGPIPE, sigpipe); 2001 (void) mci_traverse_persistent(mci_print_persistent, NULL); 2002 finis(false, true, EX_OK); 2003 /* NOTREACHED */ 2004 break; 2005 2006 case MD_PURGESTAT: 2007 (void) mci_traverse_persistent(mci_purge_persistent, NULL); 2008 finis(false, true, EX_OK); 2009 /* NOTREACHED */ 2010 break; 2011 2012 case MD_INITALIAS: 2013 /* initialize maps */ 2014 initmaps(); 2015 finis(false, true, ExitStat); 2016 /* NOTREACHED */ 2017 break; 2018 2019 case MD_SMTP: 2020 case MD_DAEMON: 2021 /* reset DSN parameters */ 2022 DefaultNotify = QPINGONFAILURE|QPINGONDELAY; 2023 macdefine(&BlankEnvelope.e_macro, A_PERM, 2024 macid("{dsn_notify}"), NULL); 2025 BlankEnvelope.e_envid = NULL; 2026 macdefine(&BlankEnvelope.e_macro, A_PERM, 2027 macid("{dsn_envid}"), NULL); 2028 BlankEnvelope.e_flags &= ~(EF_RET_PARAM|EF_NO_BODY_RETN); 2029 macdefine(&BlankEnvelope.e_macro, A_PERM, 2030 macid("{dsn_ret}"), NULL); 2031 2032 /* don't open maps for daemon -- done below in child */ 2033 break; 2034 } 2035 2036 if (tTd(0, 15)) 2037 { 2038 /* print configuration table (or at least part of it) */ 2039 if (tTd(0, 90)) 2040 printrules(); 2041 for (i = 0; i < MAXMAILERS; i++) 2042 { 2043 if (Mailer[i] != NULL) 2044 printmailer(sm_debug_file(), Mailer[i]); 2045 } 2046 } 2047 2048 /* 2049 ** Switch to the main envelope. 2050 */ 2051 2052 CurEnv = newenvelope(&MainEnvelope, &BlankEnvelope, 2053 sm_rpool_new_x(NULL)); 2054 MainEnvelope.e_flags = BlankEnvelope.e_flags; 2055 2056 /* 2057 ** If test mode, read addresses from stdin and process. 2058 */ 2059 2060 if (OpMode == MD_TEST) 2061 { 2062 if (isatty(sm_io_getinfo(smioin, SM_IO_WHAT_FD, NULL))) 2063 Verbose = 2; 2064 2065 if (Verbose) 2066 { 2067 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2068 "ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n"); 2069 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2070 "Enter <ruleset> <address>\n"); 2071 } 2072 macdefine(&(MainEnvelope.e_macro), A_PERM, 2073 macid("{addr_type}"), "e r"); 2074 for (;;) 2075 { 2076 SM_TRY 2077 { 2078 (void) sm_signal(SIGINT, intindebug); 2079 (void) sm_releasesignal(SIGINT); 2080 if (Verbose == 2) 2081 (void) sm_io_fprintf(smioout, 2082 SM_TIME_DEFAULT, 2083 "> "); 2084 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 2085 if (sm_io_fgets(smioin, SM_TIME_DEFAULT, buf, 2086 sizeof(buf)) == NULL) 2087 testmodeline("/quit", &MainEnvelope); 2088 p = strchr(buf, '\n'); 2089 if (p != NULL) 2090 *p = '\0'; 2091 if (Verbose < 2) 2092 (void) sm_io_fprintf(smioout, 2093 SM_TIME_DEFAULT, 2094 "> %s\n", buf); 2095 testmodeline(buf, &MainEnvelope); 2096 } 2097 SM_EXCEPT(exc, "[!F]*") 2098 { 2099 /* 2100 ** 8.10 just prints \n on interrupt. 2101 ** I'm printing the exception here in case 2102 ** sendmail is extended to raise additional 2103 ** exceptions in this context. 2104 */ 2105 2106 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 2107 "\n"); 2108 sm_exc_print(exc, smioout); 2109 } 2110 SM_END_TRY 2111 } 2112 } 2113 2114#if STARTTLS 2115 tls_ok = true; 2116 if (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER || 2117 OpMode == MD_ARPAFTP) 2118 { 2119 /* check whether STARTTLS is turned off for the client */ 2120 if (chkclientmodifiers(D_NOTLS)) 2121 tls_ok = false; 2122 } 2123 else if (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON || 2124 OpMode == MD_SMTP) 2125 { 2126 /* check whether STARTTLS is turned off for the server */ 2127 if (chkdaemonmodifiers(D_NOTLS)) 2128 tls_ok = false; 2129 } 2130 else /* other modes don't need STARTTLS */ 2131 tls_ok = false; 2132 2133 if (tls_ok) 2134 { 2135 /* basic TLS initialization */ 2136 tls_ok = init_tls_library(); 2137 } 2138 2139 if (!tls_ok && (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER)) 2140 { 2141 /* disable TLS for client */ 2142 setclttls(false); 2143 } 2144#endif /* STARTTLS */ 2145 2146 /* 2147 ** If collecting stuff from the queue, go start doing that. 2148 */ 2149 2150 if (OpMode == MD_QUEUERUN && QueueIntvl == 0) 2151 { 2152 pid_t pid = -1; 2153 2154#if STARTTLS 2155 /* init TLS for client, ignore result for now */ 2156 (void) initclttls(tls_ok); 2157#endif /* STARTTLS */ 2158 2159 /* 2160 ** The parent process of the caller of runqueue() needs 2161 ** to stay around for a possible SIGTERM. The SIGTERM will 2162 ** tell this process that all of the queue runners children 2163 ** need to be sent SIGTERM as well. At the same time, we 2164 ** want to return control to the command line. So we do an 2165 ** extra fork(). 2166 */ 2167 2168 if (Verbose || foregroundqueue || (pid = fork()) <= 0) 2169 { 2170 /* 2171 ** If the fork() failed we should still try to do 2172 ** the queue run. If it succeeded then the child 2173 ** is going to start the run and wait for all 2174 ** of the children to finish. 2175 */ 2176 2177 if (pid == 0) 2178 { 2179 /* Reset global flags */ 2180 RestartRequest = NULL; 2181 ShutdownRequest = NULL; 2182 PendingSignal = 0; 2183 2184 /* disconnect from terminal */ 2185 disconnect(2, CurEnv); 2186 } 2187 2188 CurrentPid = getpid(); 2189 if (qgrp != NOQGRP) 2190 { 2191 int rwgflags = RWG_NONE; 2192 2193 /* 2194 ** To run a specific queue group mark it to 2195 ** be run, select the work group it's in and 2196 ** increment the work counter. 2197 */ 2198 2199 for (i = 0; i < NumQueue && Queue[i] != NULL; 2200 i++) 2201 Queue[i]->qg_nextrun = (time_t) -1; 2202 Queue[qgrp]->qg_nextrun = 0; 2203 if (Verbose) 2204 rwgflags |= RWG_VERBOSE; 2205 if (queuepersistent) 2206 rwgflags |= RWG_PERSISTENT; 2207 rwgflags |= RWG_FORCE; 2208 (void) run_work_group(Queue[qgrp]->qg_wgrp, 2209 rwgflags); 2210 } 2211 else 2212 (void) runqueue(false, Verbose, 2213 queuepersistent, true); 2214 2215 /* set the title to make it easier to find */ 2216 sm_setproctitle(true, CurEnv, "Queue control"); 2217 (void) sm_signal(SIGCHLD, SIG_DFL); 2218 while (CurChildren > 0) 2219 { 2220 int status; 2221 pid_t ret; 2222 2223 errno = 0; 2224 while ((ret = sm_wait(&status)) <= 0) 2225 { 2226 if (errno == ECHILD) 2227 { 2228 /* 2229 ** Oops... something got messed 2230 ** up really bad. Waiting for 2231 ** non-existent children 2232 ** shouldn't happen. Let's get 2233 ** out of here. 2234 */ 2235 2236 CurChildren = 0; 2237 break; 2238 } 2239 continue; 2240 } 2241 2242 /* something is really really wrong */ 2243 if (errno == ECHILD) 2244 { 2245 sm_syslog(LOG_ERR, NOQID, 2246 "queue control process: lost all children: wait returned ECHILD"); 2247 break; 2248 } 2249 2250 /* Only drop when a child gives status */ 2251 if (WIFSTOPPED(status)) 2252 continue; 2253 2254 proc_list_drop(ret, status, NULL); 2255 } 2256 } 2257 finis(true, true, ExitStat); 2258 /* NOTREACHED */ 2259 } 2260 2261# if SASL 2262 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2263 { 2264 /* check whether AUTH is turned off for the server */ 2265 if (!chkdaemonmodifiers(D_NOAUTH) && 2266 (i = sasl_server_init(srvcallbacks, "Sendmail")) != SASL_OK) 2267 syserr("!sasl_server_init failed! [%s]", 2268 sasl_errstring(i, NULL, NULL)); 2269 } 2270# endif /* SASL */ 2271 2272 if (OpMode == MD_SMTP) 2273 { 2274 proc_list_add(CurrentPid, "Sendmail SMTP Agent", 2275 PROC_DAEMON, 0, -1, NULL); 2276 2277 /* clean up background delivery children */ 2278 (void) sm_signal(SIGCHLD, reapchild); 2279 } 2280 2281 /* 2282 ** If a daemon, wait for a request. 2283 ** getrequests will always return in a child. 2284 ** If we should also be processing the queue, start 2285 ** doing it in background. 2286 ** We check for any errors that might have happened 2287 ** during startup. 2288 */ 2289 2290 if (OpMode == MD_DAEMON || QueueIntvl > 0) 2291 { 2292 char dtype[200]; 2293 2294 /* avoid cleanup in finis(), DaemonPid will be set below */ 2295 DaemonPid = 0; 2296 if (!run_in_foreground && !tTd(99, 100)) 2297 { 2298 /* put us in background */ 2299 i = fork(); 2300 if (i < 0) 2301 syserr("daemon: cannot fork"); 2302 if (i != 0) 2303 { 2304 finis(false, true, EX_OK); 2305 /* NOTREACHED */ 2306 } 2307 2308 /* 2309 ** Initialize exception stack and default exception 2310 ** handler for child process. 2311 */ 2312 2313 /* Reset global flags */ 2314 RestartRequest = NULL; 2315 RestartWorkGroup = false; 2316 ShutdownRequest = NULL; 2317 PendingSignal = 0; 2318 CurrentPid = getpid(); 2319 2320 sm_exc_newthread(fatal_error); 2321 2322 /* disconnect from our controlling tty */ 2323 disconnect(2, &MainEnvelope); 2324 } 2325 2326 dtype[0] = '\0'; 2327 if (OpMode == MD_DAEMON) 2328 { 2329 (void) sm_strlcat(dtype, "+SMTP", sizeof(dtype)); 2330 DaemonPid = CurrentPid; 2331 } 2332 if (QueueIntvl > 0) 2333 { 2334 (void) sm_strlcat2(dtype, 2335 queuepersistent 2336 ? "+persistent-queueing@" 2337 : "+queueing@", 2338 pintvl(QueueIntvl, true), 2339 sizeof(dtype)); 2340 } 2341 if (tTd(0, 1)) 2342 (void) sm_strlcat(dtype, "+debugging", sizeof(dtype)); 2343 2344 sm_syslog(LOG_INFO, NOQID, 2345 "starting daemon (%s): %s", Version, dtype + 1); 2346#if XLA 2347 xla_create_file(); 2348#endif /* XLA */ 2349 2350 /* save daemon type in a macro for possible PidFile use */ 2351 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2352 macid("{daemon_info}"), dtype + 1); 2353 2354 /* save queue interval in a macro for possible PidFile use */ 2355 macdefine(&MainEnvelope.e_macro, A_TEMP, 2356 macid("{queue_interval}"), pintvl(QueueIntvl, true)); 2357 2358 /* workaround: can't seem to release the signal in the parent */ 2359 (void) sm_signal(SIGHUP, sighup); 2360 (void) sm_releasesignal(SIGHUP); 2361 (void) sm_signal(SIGTERM, sigterm); 2362 2363 if (QueueIntvl > 0) 2364 { 2365#if _FFR_RUNPQG 2366 if (qgrp != NOQGRP) 2367 { 2368 int rwgflags = RWG_NONE; 2369 2370 /* 2371 ** To run a specific queue group mark it to 2372 ** be run, select the work group it's in and 2373 ** increment the work counter. 2374 */ 2375 2376 for (i = 0; i < NumQueue && Queue[i] != NULL; 2377 i++) 2378 Queue[i]->qg_nextrun = (time_t) -1; 2379 Queue[qgrp]->qg_nextrun = 0; 2380 if (Verbose) 2381 rwgflags |= RWG_VERBOSE; 2382 if (queuepersistent) 2383 rwgflags |= RWG_PERSISTENT; 2384 rwgflags |= RWG_FORCE; 2385 (void) run_work_group(Queue[qgrp]->qg_wgrp, 2386 rwgflags); 2387 } 2388 else 2389#endif /* _FFR_RUNPQG */ 2390 (void) runqueue(true, false, queuepersistent, 2391 true); 2392 2393 /* 2394 ** If queuepersistent but not in daemon mode then 2395 ** we're going to do the queue runner monitoring here. 2396 ** If in daemon mode then the monitoring will happen 2397 ** elsewhere. 2398 */ 2399 2400 if (OpMode != MD_DAEMON && queuepersistent) 2401 { 2402 /* 2403 ** Write the pid to file 2404 ** XXX Overwrites sendmail.pid 2405 */ 2406 2407 log_sendmail_pid(&MainEnvelope); 2408 2409 /* set the title to make it easier to find */ 2410 sm_setproctitle(true, CurEnv, "Queue control"); 2411 (void) sm_signal(SIGCHLD, SIG_DFL); 2412 while (CurChildren > 0) 2413 { 2414 int status; 2415 pid_t ret; 2416 int group; 2417 2418 CHECK_RESTART; 2419 errno = 0; 2420 while ((ret = sm_wait(&status)) <= 0) 2421 { 2422 /* 2423 ** Waiting for non-existent 2424 ** children shouldn't happen. 2425 ** Let's get out of here if 2426 ** it occurs. 2427 */ 2428 2429 if (errno == ECHILD) 2430 { 2431 CurChildren = 0; 2432 break; 2433 } 2434 continue; 2435 } 2436 2437 /* something is really really wrong */ 2438 if (errno == ECHILD) 2439 { 2440 sm_syslog(LOG_ERR, NOQID, 2441 "persistent queue runner control process: lost all children: wait returned ECHILD"); 2442 break; 2443 } 2444 2445 if (WIFSTOPPED(status)) 2446 continue; 2447 2448 /* Probe only on a child status */ 2449 proc_list_drop(ret, status, &group); 2450 2451 if (WIFSIGNALED(status)) 2452 { 2453 if (WCOREDUMP(status)) 2454 { 2455 sm_syslog(LOG_ERR, NOQID, 2456 "persistent queue runner=%d core dumped, signal=%d", 2457 group, WTERMSIG(status)); 2458 2459 /* don't restart this */ 2460 mark_work_group_restart( 2461 group, -1); 2462 continue; 2463 } 2464 2465 sm_syslog(LOG_ERR, NOQID, 2466 "persistent queue runner=%d died, pid=%ld, signal=%d", 2467 group, (long) ret, 2468 WTERMSIG(status)); 2469 } 2470 2471 /* 2472 ** When debugging active, don't 2473 ** restart the persistent queues. 2474 ** But do log this as info. 2475 */ 2476 2477 if (sm_debug_active(&DebugNoPRestart, 2478 1)) 2479 { 2480 sm_syslog(LOG_DEBUG, NOQID, 2481 "persistent queue runner=%d, exited", 2482 group); 2483 mark_work_group_restart(group, 2484 -1); 2485 } 2486 CHECK_RESTART; 2487 } 2488 finis(true, true, ExitStat); 2489 /* NOTREACHED */ 2490 } 2491 2492 if (OpMode != MD_DAEMON) 2493 { 2494 char qtype[200]; 2495 2496 /* 2497 ** Write the pid to file 2498 ** XXX Overwrites sendmail.pid 2499 */ 2500 2501 log_sendmail_pid(&MainEnvelope); 2502 2503 /* set the title to make it easier to find */ 2504 qtype[0] = '\0'; 2505 (void) sm_strlcpyn(qtype, sizeof(qtype), 4, 2506 "Queue runner@", 2507 pintvl(QueueIntvl, true), 2508 " for ", 2509 QueueDir); 2510 sm_setproctitle(true, CurEnv, qtype); 2511 for (;;) 2512 { 2513 (void) pause(); 2514 2515 CHECK_RESTART; 2516 2517 if (doqueuerun()) 2518 (void) runqueue(true, false, 2519 false, false); 2520 } 2521 } 2522 } 2523 dropenvelope(&MainEnvelope, true, false); 2524 2525#if STARTTLS 2526 /* init TLS for server, ignore result for now */ 2527 (void) initsrvtls(tls_ok); 2528#endif /* STARTTLS */ 2529 2530 nextreq: 2531 p_flags = getrequests(&MainEnvelope); 2532 2533 /* drop privileges */ 2534 (void) drop_privileges(false); 2535 2536 /* 2537 ** Get authentication data 2538 ** Set _ macro in BlankEnvelope before calling newenvelope(). 2539 */ 2540 2541 authinfo = getauthinfo(sm_io_getinfo(InChannel, SM_IO_WHAT_FD, 2542 NULL), &forged); 2543 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 2544 2545 /* at this point we are in a child: reset state */ 2546 sm_rpool_free(MainEnvelope.e_rpool); 2547 (void) newenvelope(&MainEnvelope, &MainEnvelope, 2548 sm_rpool_new_x(NULL)); 2549 } 2550 2551 if (LogLevel > 9) 2552 { 2553 /* log connection information */ 2554 sm_syslog(LOG_INFO, NULL, "connect from %s", authinfo); 2555 } 2556 2557 /* 2558 ** If running SMTP protocol, start collecting and executing 2559 ** commands. This will never return. 2560 */ 2561 2562 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2563 { 2564 char pbuf[20]; 2565 2566 /* 2567 ** Save some macros for check_* rulesets. 2568 */ 2569 2570 if (forged) 2571 { 2572 char ipbuf[103]; 2573 2574 (void) sm_snprintf(ipbuf, sizeof(ipbuf), "[%.100s]", 2575 anynet_ntoa(&RealHostAddr)); 2576 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2577 macid("{client_name}"), ipbuf); 2578 } 2579 else 2580 macdefine(&BlankEnvelope.e_macro, A_PERM, 2581 macid("{client_name}"), RealHostName); 2582 macdefine(&BlankEnvelope.e_macro, A_PERM, 2583 macid("{client_ptr}"), RealHostName); 2584 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2585 macid("{client_addr}"), anynet_ntoa(&RealHostAddr)); 2586 sm_getla(); 2587 2588 switch (RealHostAddr.sa.sa_family) 2589 { 2590#if NETINET 2591 case AF_INET: 2592 (void) sm_snprintf(pbuf, sizeof(pbuf), "%d", 2593 RealHostAddr.sin.sin_port); 2594 break; 2595#endif /* NETINET */ 2596#if NETINET6 2597 case AF_INET6: 2598 (void) sm_snprintf(pbuf, sizeof(pbuf), "%d", 2599 RealHostAddr.sin6.sin6_port); 2600 break; 2601#endif /* NETINET6 */ 2602 default: 2603 (void) sm_snprintf(pbuf, sizeof(pbuf), "0"); 2604 break; 2605 } 2606 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2607 macid("{client_port}"), pbuf); 2608 2609 if (OpMode == MD_DAEMON) 2610 { 2611 ENVELOPE *saved_env; 2612 2613 /* validate the connection */ 2614 HoldErrs = true; 2615 saved_env = CurEnv; 2616 CurEnv = &BlankEnvelope; 2617 nullserver = validate_connection(&RealHostAddr, 2618 macvalue(macid("{client_name}"), 2619 &BlankEnvelope), 2620 &BlankEnvelope); 2621 if (bitset(EF_DISCARD, BlankEnvelope.e_flags)) 2622 MainEnvelope.e_flags |= EF_DISCARD; 2623 CurEnv = saved_env; 2624 HoldErrs = false; 2625 } 2626 else if (p_flags == NULL) 2627 { 2628 p_flags = (BITMAP256 *) xalloc(sizeof(*p_flags)); 2629 clrbitmap(p_flags); 2630 } 2631#if STARTTLS 2632 if (OpMode == MD_SMTP) 2633 (void) initsrvtls(tls_ok); 2634#endif /* STARTTLS */ 2635 2636 /* turn off profiling */ 2637 SM_PROF(1); 2638 smtp(nullserver, *p_flags, &MainEnvelope); 2639 2640 if (tTd(93, 100)) 2641 { 2642 /* turn off profiling */ 2643 SM_PROF(0); 2644 if (OpMode == MD_DAEMON) 2645 goto nextreq; 2646 } 2647 } 2648 2649 sm_rpool_free(MainEnvelope.e_rpool); 2650 clearenvelope(&MainEnvelope, false, sm_rpool_new_x(NULL)); 2651 if (OpMode == MD_VERIFY) 2652 { 2653 set_delivery_mode(SM_VERIFY, &MainEnvelope); 2654 PostMasterCopy = NULL; 2655 } 2656 else 2657 { 2658 /* interactive -- all errors are global */ 2659 MainEnvelope.e_flags |= EF_GLOBALERRS|EF_LOGSENDER; 2660 } 2661 2662 /* 2663 ** Do basic system initialization and set the sender 2664 */ 2665 2666 initsys(&MainEnvelope); 2667 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{ntries}"), "0"); 2668 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{nrcpts}"), "0"); 2669 setsender(from, &MainEnvelope, NULL, '\0', false); 2670 if (warn_f_flag != '\0' && !wordinclass(RealUserName, 't') && 2671 (!bitnset(M_LOCALMAILER, MainEnvelope.e_from.q_mailer->m_flags) || 2672 strcmp(MainEnvelope.e_from.q_user, RealUserName) != 0)) 2673 { 2674 auth_warning(&MainEnvelope, "%s set sender to %s using -%c", 2675 RealUserName, from, warn_f_flag); 2676#if SASL 2677 auth = false; 2678#endif /* SASL */ 2679 } 2680 if (auth) 2681 { 2682 char *fv; 2683 2684 /* set the initial sender for AUTH= to $f@$j */ 2685 fv = macvalue('f', &MainEnvelope); 2686 if (fv == NULL || *fv == '\0') 2687 MainEnvelope.e_auth_param = NULL; 2688 else 2689 { 2690 if (strchr(fv, '@') == NULL) 2691 { 2692 i = strlen(fv) + strlen(macvalue('j', 2693 &MainEnvelope)) + 2; 2694 p = sm_malloc_x(i); 2695 (void) sm_strlcpyn(p, i, 3, fv, "@", 2696 macvalue('j', 2697 &MainEnvelope)); 2698 } 2699 else 2700 p = sm_strdup_x(fv); 2701 MainEnvelope.e_auth_param = sm_rpool_strdup_x(MainEnvelope.e_rpool, 2702 xtextify(p, "=")); 2703 sm_free(p); /* XXX */ 2704 } 2705 } 2706 if (macvalue('s', &MainEnvelope) == NULL) 2707 macdefine(&MainEnvelope.e_macro, A_PERM, 's', RealHostName); 2708 2709 av = argv + optind; 2710 if (*av == NULL && !GrabTo) 2711 { 2712 MainEnvelope.e_to = NULL; 2713 MainEnvelope.e_flags |= EF_GLOBALERRS; 2714 HoldErrs = false; 2715 SuperSafe = SAFE_NO; 2716 usrerr("Recipient names must be specified"); 2717 2718 /* collect body for UUCP return */ 2719 if (OpMode != MD_VERIFY) 2720 collect(InChannel, false, NULL, &MainEnvelope, true); 2721 finis(true, true, EX_USAGE); 2722 /* NOTREACHED */ 2723 } 2724 2725 /* 2726 ** Scan argv and deliver the message to everyone. 2727 */ 2728 2729 save_val = LogUsrErrs; 2730 LogUsrErrs = true; 2731 sendtoargv(av, &MainEnvelope); 2732 LogUsrErrs = save_val; 2733 2734 /* if we have had errors sofar, arrange a meaningful exit stat */ 2735 if (Errors > 0 && ExitStat == EX_OK) 2736 ExitStat = EX_USAGE; 2737 2738#if _FFR_FIX_DASHT 2739 /* 2740 ** If using -t, force not sending to argv recipients, even 2741 ** if they are mentioned in the headers. 2742 */ 2743 2744 if (GrabTo) 2745 { 2746 ADDRESS *q; 2747 2748 for (q = MainEnvelope.e_sendqueue; q != NULL; q = q->q_next) 2749 q->q_state = QS_REMOVED; 2750 } 2751#endif /* _FFR_FIX_DASHT */ 2752 2753 /* 2754 ** Read the input mail. 2755 */ 2756 2757 MainEnvelope.e_to = NULL; 2758 if (OpMode != MD_VERIFY || GrabTo) 2759 { 2760 int savederrors; 2761 unsigned long savedflags; 2762 2763 /* 2764 ** workaround for compiler warning on Irix: 2765 ** do not initialize variable in the definition, but 2766 ** later on: 2767 ** warning(1548): transfer of control bypasses 2768 ** initialization of: 2769 ** variable "savederrors" (declared at line 2570) 2770 ** variable "savedflags" (declared at line 2571) 2771 ** goto giveup; 2772 */ 2773 2774 savederrors = Errors; 2775 savedflags = MainEnvelope.e_flags & EF_FATALERRS; 2776 MainEnvelope.e_flags |= EF_GLOBALERRS; 2777 MainEnvelope.e_flags &= ~EF_FATALERRS; 2778 Errors = 0; 2779 buffer_errors(); 2780 collect(InChannel, false, NULL, &MainEnvelope, true); 2781 2782 /* header checks failed */ 2783 if (Errors > 0) 2784 { 2785 giveup: 2786 if (!GrabTo) 2787 { 2788 /* Log who the mail would have gone to */ 2789 logundelrcpts(&MainEnvelope, 2790 MainEnvelope.e_message, 2791 8, false); 2792 } 2793 flush_errors(true); 2794 finis(true, true, ExitStat); 2795 /* NOTREACHED */ 2796 return -1; 2797 } 2798 2799 /* bail out if message too large */ 2800 if (bitset(EF_CLRQUEUE, MainEnvelope.e_flags)) 2801 { 2802 finis(true, true, ExitStat != EX_OK ? ExitStat 2803 : EX_DATAERR); 2804 /* NOTREACHED */ 2805 return -1; 2806 } 2807 2808 /* set message size */ 2809 (void) sm_snprintf(buf, sizeof(buf), "%ld", 2810 MainEnvelope.e_msgsize); 2811 macdefine(&MainEnvelope.e_macro, A_TEMP, 2812 macid("{msg_size}"), buf); 2813 2814 Errors = savederrors; 2815 MainEnvelope.e_flags |= savedflags; 2816 } 2817 errno = 0; 2818 2819 if (tTd(1, 1)) 2820 sm_dprintf("From person = \"%s\"\n", 2821 MainEnvelope.e_from.q_paddr); 2822 2823 /* Check if quarantining stats should be updated */ 2824 if (MainEnvelope.e_quarmsg != NULL) 2825 markstats(&MainEnvelope, NULL, STATS_QUARANTINE); 2826 2827 /* 2828 ** Actually send everything. 2829 ** If verifying, just ack. 2830 */ 2831 2832 if (Errors == 0) 2833 { 2834 if (!split_by_recipient(&MainEnvelope) && 2835 bitset(EF_FATALERRS, MainEnvelope.e_flags)) 2836 goto giveup; 2837 } 2838 2839 /* make sure we deliver at least the first envelope */ 2840 i = FastSplit > 0 ? 0 : -1; 2841 for (e = &MainEnvelope; e != NULL; e = e->e_sibling, i++) 2842 { 2843 ENVELOPE *next; 2844 2845 e->e_from.q_state = QS_SENDER; 2846 if (tTd(1, 5)) 2847 { 2848 sm_dprintf("main[%d]: QS_SENDER ", i); 2849 printaddr(sm_debug_file(), &e->e_from, false); 2850 } 2851 e->e_to = NULL; 2852 sm_getla(); 2853 GrabTo = false; 2854#if NAMED_BIND 2855 _res.retry = TimeOuts.res_retry[RES_TO_FIRST]; 2856 _res.retrans = TimeOuts.res_retrans[RES_TO_FIRST]; 2857#endif /* NAMED_BIND */ 2858 next = e->e_sibling; 2859 e->e_sibling = NULL; 2860 2861 /* after FastSplit envelopes: queue up */ 2862 sendall(e, i >= FastSplit ? SM_QUEUE : SM_DEFAULT); 2863 e->e_sibling = next; 2864 } 2865 2866 /* 2867 ** All done. 2868 ** Don't send return error message if in VERIFY mode. 2869 */ 2870 2871 finis(true, true, ExitStat); 2872 /* NOTREACHED */ 2873 return ExitStat; 2874} 2875/* 2876** STOP_SENDMAIL -- Stop the running program 2877** 2878** Parameters: 2879** none. 2880** 2881** Returns: 2882** none. 2883** 2884** Side Effects: 2885** exits. 2886*/ 2887 2888void 2889stop_sendmail() 2890{ 2891 /* reset uid for process accounting */ 2892 endpwent(); 2893 (void) setuid(RealUid); 2894 exit(EX_OK); 2895} 2896/* 2897** FINIS -- Clean up and exit. 2898** 2899** Parameters: 2900** drop -- whether or not to drop CurEnv envelope 2901** cleanup -- call exit() or _exit()? 2902** exitstat -- exit status to use for exit() call 2903** 2904** Returns: 2905** never 2906** 2907** Side Effects: 2908** exits sendmail 2909*/ 2910 2911void 2912finis(drop, cleanup, exitstat) 2913 bool drop; 2914 bool cleanup; 2915 volatile int exitstat; 2916{ 2917 char pidpath[MAXPATHLEN]; 2918 pid_t pid; 2919 2920 /* Still want to process new timeouts added below */ 2921 sm_clear_events(); 2922 (void) sm_releasesignal(SIGALRM); 2923 2924 if (tTd(2, 1)) 2925 { 2926 sm_dprintf("\n====finis: stat %d e_id=%s e_flags=", 2927 exitstat, 2928 CurEnv->e_id == NULL ? "NOQUEUE" : CurEnv->e_id); 2929 printenvflags(CurEnv); 2930 } 2931 if (tTd(2, 9)) 2932 printopenfds(false); 2933 2934 SM_TRY 2935 /* 2936 ** Clean up. This might raise E:mta.quickabort 2937 */ 2938 2939 /* clean up temp files */ 2940 CurEnv->e_to = NULL; 2941 if (drop) 2942 { 2943 if (CurEnv->e_id != NULL) 2944 { 2945 dropenvelope(CurEnv, true, false); 2946 sm_rpool_free(CurEnv->e_rpool); 2947 CurEnv->e_rpool = NULL; 2948 2949 /* these may have pointed to the rpool */ 2950 CurEnv->e_to = NULL; 2951 CurEnv->e_message = NULL; 2952 CurEnv->e_statmsg = NULL; 2953 CurEnv->e_quarmsg = NULL; 2954 CurEnv->e_bodytype = NULL; 2955 CurEnv->e_id = NULL; 2956 CurEnv->e_envid = NULL; 2957 CurEnv->e_auth_param = NULL; 2958 } 2959 else 2960 poststats(StatFile); 2961 } 2962 2963 /* flush any cached connections */ 2964 mci_flush(true, NULL); 2965 2966 /* close maps belonging to this pid */ 2967 closemaps(false); 2968 2969#if USERDB 2970 /* close UserDatabase */ 2971 _udbx_close(); 2972#endif /* USERDB */ 2973 2974#if SASL 2975 stop_sasl_client(); 2976#endif /* SASL */ 2977 2978#if XLA 2979 /* clean up extended load average stuff */ 2980 xla_all_end(); 2981#endif /* XLA */ 2982 2983 SM_FINALLY 2984 /* 2985 ** And exit. 2986 */ 2987 2988 if (LogLevel > 78) 2989 sm_syslog(LOG_DEBUG, CurEnv->e_id, "finis, pid=%d", 2990 (int) CurrentPid); 2991 if (exitstat == EX_TEMPFAIL || 2992 CurEnv->e_errormode == EM_BERKNET) 2993 exitstat = EX_OK; 2994 2995 /* XXX clean up queues and related data structures */ 2996 cleanup_queues(); 2997 pid = getpid(); 2998#if SM_CONF_SHM 2999 cleanup_shm(DaemonPid == pid); 3000#endif /* SM_CONF_SHM */ 3001 3002 /* close locked pid file */ 3003 close_sendmail_pid(); 3004 3005 if (DaemonPid == pid || PidFilePid == pid) 3006 { 3007 /* blow away the pid file */ 3008 expand(PidFile, pidpath, sizeof(pidpath), CurEnv); 3009 (void) unlink(pidpath); 3010 } 3011 3012 /* reset uid for process accounting */ 3013 endpwent(); 3014 sm_mbdb_terminate(); 3015#if _FFR_MEMSTAT 3016 (void) sm_memstat_close(); 3017#endif /* _FFR_MEMSTAT */ 3018 (void) setuid(RealUid); 3019#if SM_HEAP_CHECK 3020 /* dump the heap, if we are checking for memory leaks */ 3021 if (sm_debug_active(&SmHeapCheck, 2)) 3022 sm_heap_report(smioout, 3023 sm_debug_level(&SmHeapCheck) - 1); 3024#endif /* SM_HEAP_CHECK */ 3025 if (sm_debug_active(&SmXtrapReport, 1)) 3026 sm_dprintf("xtrap count = %d\n", SmXtrapCount); 3027 if (cleanup) 3028 exit(exitstat); 3029 else 3030 _exit(exitstat); 3031 SM_END_TRY 3032} 3033/* 3034** INTINDEBUG -- signal handler for SIGINT in -bt mode 3035** 3036** Parameters: 3037** sig -- incoming signal. 3038** 3039** Returns: 3040** none. 3041** 3042** Side Effects: 3043** longjmps back to test mode loop. 3044** 3045** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3046** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3047** DOING. 3048*/ 3049 3050/* Type of an exception generated on SIGINT during address test mode. */ 3051static const SM_EXC_TYPE_T EtypeInterrupt = 3052{ 3053 SmExcTypeMagic, 3054 "S:mta.interrupt", 3055 "", 3056 sm_etype_printf, 3057 "interrupt", 3058}; 3059 3060/* ARGSUSED */ 3061static SIGFUNC_DECL 3062intindebug(sig) 3063 int sig; 3064{ 3065 int save_errno = errno; 3066 3067 FIX_SYSV_SIGNAL(sig, intindebug); 3068 errno = save_errno; 3069 CHECK_CRITICAL(sig); 3070 errno = save_errno; 3071 sm_exc_raisenew_x(&EtypeInterrupt); 3072 errno = save_errno; 3073 return SIGFUNC_RETURN; 3074} 3075/* 3076** SIGTERM -- SIGTERM handler for the daemon 3077** 3078** Parameters: 3079** sig -- signal number. 3080** 3081** Returns: 3082** none. 3083** 3084** Side Effects: 3085** Sets ShutdownRequest which will hopefully trigger 3086** the daemon to exit. 3087** 3088** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3089** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3090** DOING. 3091*/ 3092 3093/* ARGSUSED */ 3094static SIGFUNC_DECL 3095sigterm(sig) 3096 int sig; 3097{ 3098 int save_errno = errno; 3099 3100 FIX_SYSV_SIGNAL(sig, sigterm); 3101 ShutdownRequest = "signal"; 3102 errno = save_errno; 3103 return SIGFUNC_RETURN; 3104} 3105/* 3106** SIGHUP -- handle a SIGHUP signal 3107** 3108** Parameters: 3109** sig -- incoming signal. 3110** 3111** Returns: 3112** none. 3113** 3114** Side Effects: 3115** Sets RestartRequest which should cause the daemon 3116** to restart. 3117** 3118** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3119** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3120** DOING. 3121*/ 3122 3123/* ARGSUSED */ 3124static SIGFUNC_DECL 3125sighup(sig) 3126 int sig; 3127{ 3128 int save_errno = errno; 3129 3130 FIX_SYSV_SIGNAL(sig, sighup); 3131 RestartRequest = "signal"; 3132 errno = save_errno; 3133 return SIGFUNC_RETURN; 3134} 3135/* 3136** SIGPIPE -- signal handler for SIGPIPE 3137** 3138** Parameters: 3139** sig -- incoming signal. 3140** 3141** Returns: 3142** none. 3143** 3144** Side Effects: 3145** Sets StopRequest which should cause the mailq/hoststatus 3146** display to stop. 3147** 3148** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3149** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3150** DOING. 3151*/ 3152 3153/* ARGSUSED */ 3154static SIGFUNC_DECL 3155sigpipe(sig) 3156 int sig; 3157{ 3158 int save_errno = errno; 3159 3160 FIX_SYSV_SIGNAL(sig, sigpipe); 3161 StopRequest = true; 3162 errno = save_errno; 3163 return SIGFUNC_RETURN; 3164} 3165/* 3166** INTSIG -- clean up on interrupt 3167** 3168** This just arranges to exit. It pessimizes in that it 3169** may resend a message. 3170** 3171** Parameters: 3172** none. 3173** 3174** Returns: 3175** none. 3176** 3177** Side Effects: 3178** Unlocks the current job. 3179** 3180** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3181** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3182** DOING. 3183** 3184** XXX: More work is needed for this signal handler. 3185*/ 3186 3187/* ARGSUSED */ 3188SIGFUNC_DECL 3189intsig(sig) 3190 int sig; 3191{ 3192 bool drop = false; 3193 int save_errno = errno; 3194 3195 FIX_SYSV_SIGNAL(sig, intsig); 3196 errno = save_errno; 3197 CHECK_CRITICAL(sig); 3198 sm_allsignals(true); 3199 3200 if (sig != 0 && LogLevel > 79) 3201 sm_syslog(LOG_DEBUG, CurEnv->e_id, "interrupt"); 3202 FileName = NULL; 3203 3204 /* Clean-up on aborted stdin message submission */ 3205 if (CurEnv->e_id != NULL && 3206 (OpMode == MD_SMTP || 3207 OpMode == MD_DELIVER || 3208 OpMode == MD_ARPAFTP)) 3209 { 3210 register ADDRESS *q; 3211 3212 /* don't return an error indication */ 3213 CurEnv->e_to = NULL; 3214 CurEnv->e_flags &= ~EF_FATALERRS; 3215 CurEnv->e_flags |= EF_CLRQUEUE; 3216 3217 /* 3218 ** Spin through the addresses and 3219 ** mark them dead to prevent bounces 3220 */ 3221 3222 for (q = CurEnv->e_sendqueue; q != NULL; q = q->q_next) 3223 q->q_state = QS_DONTSEND; 3224 3225 drop = true; 3226 } 3227 else if (OpMode != MD_TEST) 3228 { 3229 unlockqueue(CurEnv); 3230 } 3231 3232 finis(drop, false, EX_OK); 3233 /* NOTREACHED */ 3234} 3235/* 3236** DISCONNECT -- remove our connection with any foreground process 3237** 3238** Parameters: 3239** droplev -- how "deeply" we should drop the line. 3240** 0 -- ignore signals, mail back errors, make sure 3241** output goes to stdout. 3242** 1 -- also, make stdout go to /dev/null. 3243** 2 -- also, disconnect from controlling terminal 3244** (only for daemon mode). 3245** e -- the current envelope. 3246** 3247** Returns: 3248** none 3249** 3250** Side Effects: 3251** Trys to insure that we are immune to vagaries of 3252** the controlling tty. 3253*/ 3254 3255void 3256disconnect(droplev, e) 3257 int droplev; 3258 register ENVELOPE *e; 3259{ 3260 int fd; 3261 3262 if (tTd(52, 1)) 3263 sm_dprintf("disconnect: In %d Out %d, e=%p\n", 3264 sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL), 3265 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL), e); 3266 if (tTd(52, 100)) 3267 { 3268 sm_dprintf("don't\n"); 3269 return; 3270 } 3271 if (LogLevel > 93) 3272 sm_syslog(LOG_DEBUG, e->e_id, 3273 "disconnect level %d", 3274 droplev); 3275 3276 /* be sure we don't get nasty signals */ 3277 (void) sm_signal(SIGINT, SIG_IGN); 3278 (void) sm_signal(SIGQUIT, SIG_IGN); 3279 3280 /* we can't communicate with our caller, so.... */ 3281 HoldErrs = true; 3282 CurEnv->e_errormode = EM_MAIL; 3283 Verbose = 0; 3284 DisConnected = true; 3285 3286 /* all input from /dev/null */ 3287 if (InChannel != smioin) 3288 { 3289 (void) sm_io_close(InChannel, SM_TIME_DEFAULT); 3290 InChannel = smioin; 3291 } 3292 if (sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3293 SM_IO_RDONLY, NULL, smioin) == NULL) 3294 sm_syslog(LOG_ERR, e->e_id, 3295 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3296 SM_PATH_DEVNULL, sm_errstring(errno)); 3297 3298 /* 3299 ** output to the transcript 3300 ** We also compare the fd numbers here since OutChannel 3301 ** might be a layer on top of smioout due to encryption 3302 ** (see sfsasl.c). 3303 */ 3304 3305 if (OutChannel != smioout && 3306 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL) != 3307 sm_io_getinfo(smioout, SM_IO_WHAT_FD, NULL)) 3308 { 3309 (void) sm_io_close(OutChannel, SM_TIME_DEFAULT); 3310 OutChannel = smioout; 3311 3312#if 0 3313 /* 3314 ** Has smioout been closed? Reopen it. 3315 ** This shouldn't happen anymore, the code is here 3316 ** just as a reminder. 3317 */ 3318 3319 if (smioout->sm_magic == NULL && 3320 sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3321 SM_IO_WRONLY, NULL, smioout) == NULL) 3322 sm_syslog(LOG_ERR, e->e_id, 3323 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3324 SM_PATH_DEVNULL, sm_errstring(errno)); 3325#endif /* 0 */ 3326 } 3327 if (droplev > 0) 3328 { 3329 fd = open(SM_PATH_DEVNULL, O_WRONLY, 0666); 3330 if (fd == -1) 3331 { 3332 sm_syslog(LOG_ERR, e->e_id, 3333 "disconnect: open(\"%s\") failed: %s", 3334 SM_PATH_DEVNULL, sm_errstring(errno)); 3335 } 3336 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 3337 if (fd >= 0) 3338 { 3339 (void) dup2(fd, STDOUT_FILENO); 3340 (void) dup2(fd, STDERR_FILENO); 3341 (void) close(fd); 3342 } 3343 } 3344 3345 /* drop our controlling TTY completely if possible */ 3346 if (droplev > 1) 3347 { 3348 (void) setsid(); 3349 errno = 0; 3350 } 3351 3352#if XDEBUG 3353 checkfd012("disconnect"); 3354#endif /* XDEBUG */ 3355 3356 if (LogLevel > 71) 3357 sm_syslog(LOG_DEBUG, e->e_id, "in background, pid=%d", 3358 (int) CurrentPid); 3359 3360 errno = 0; 3361} 3362 3363static void 3364obsolete(argv) 3365 char *argv[]; 3366{ 3367 register char *ap; 3368 register char *op; 3369 3370 while ((ap = *++argv) != NULL) 3371 { 3372 /* Return if "--" or not an option of any form. */ 3373 if (ap[0] != '-' || ap[1] == '-') 3374 return; 3375 3376 /* Don't allow users to use "-Q." or "-Q ." */ 3377 if ((ap[1] == 'Q' && ap[2] == '.') || 3378 (ap[1] == 'Q' && argv[1] != NULL && 3379 argv[1][0] == '.' && argv[1][1] == '\0')) 3380 { 3381 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3382 "Can not use -Q.\n"); 3383 exit(EX_USAGE); 3384 } 3385 3386 /* skip over options that do have a value */ 3387 op = strchr(OPTIONS, ap[1]); 3388 if (op != NULL && *++op == ':' && ap[2] == '\0' && 3389 ap[1] != 'd' && 3390#if defined(sony_news) 3391 ap[1] != 'E' && ap[1] != 'J' && 3392#endif /* defined(sony_news) */ 3393 argv[1] != NULL && argv[1][0] != '-') 3394 { 3395 argv++; 3396 continue; 3397 } 3398 3399 /* If -C doesn't have an argument, use sendmail.cf. */ 3400#define __DEFPATH "sendmail.cf" 3401 if (ap[1] == 'C' && ap[2] == '\0') 3402 { 3403 *argv = xalloc(sizeof(__DEFPATH) + 2); 3404 (void) sm_strlcpyn(argv[0], sizeof(__DEFPATH) + 2, 2, 3405 "-C", __DEFPATH); 3406 } 3407 3408 /* If -q doesn't have an argument, run it once. */ 3409 if (ap[1] == 'q' && ap[2] == '\0') 3410 *argv = "-q0"; 3411 3412 /* If -Q doesn't have an argument, disable quarantining */ 3413 if (ap[1] == 'Q' && ap[2] == '\0') 3414 *argv = "-Q."; 3415 3416 /* if -d doesn't have an argument, use 0-99.1 */ 3417 if (ap[1] == 'd' && ap[2] == '\0') 3418 *argv = "-d0-99.1"; 3419 3420#if defined(sony_news) 3421 /* if -E doesn't have an argument, use -EC */ 3422 if (ap[1] == 'E' && ap[2] == '\0') 3423 *argv = "-EC"; 3424 3425 /* if -J doesn't have an argument, use -JJ */ 3426 if (ap[1] == 'J' && ap[2] == '\0') 3427 *argv = "-JJ"; 3428#endif /* defined(sony_news) */ 3429 } 3430} 3431/* 3432** AUTH_WARNING -- specify authorization warning 3433** 3434** Parameters: 3435** e -- the current envelope. 3436** msg -- the text of the message. 3437** args -- arguments to the message. 3438** 3439** Returns: 3440** none. 3441*/ 3442 3443void 3444#ifdef __STDC__ 3445auth_warning(register ENVELOPE *e, const char *msg, ...) 3446#else /* __STDC__ */ 3447auth_warning(e, msg, va_alist) 3448 register ENVELOPE *e; 3449 const char *msg; 3450 va_dcl 3451#endif /* __STDC__ */ 3452{ 3453 char buf[MAXLINE]; 3454 SM_VA_LOCAL_DECL 3455 3456 if (bitset(PRIV_AUTHWARNINGS, PrivacyFlags)) 3457 { 3458 register char *p; 3459 static char hostbuf[48]; 3460 3461 if (hostbuf[0] == '\0') 3462 { 3463 struct hostent *hp; 3464 3465 hp = myhostname(hostbuf, sizeof(hostbuf)); 3466#if NETINET6 3467 if (hp != NULL) 3468 { 3469 freehostent(hp); 3470 hp = NULL; 3471 } 3472#endif /* NETINET6 */ 3473 } 3474 3475 (void) sm_strlcpyn(buf, sizeof(buf), 2, hostbuf, ": "); 3476 p = &buf[strlen(buf)]; 3477 SM_VA_START(ap, msg); 3478 (void) sm_vsnprintf(p, SPACELEFT(buf, p), msg, ap); 3479 SM_VA_END(ap); 3480 addheader("X-Authentication-Warning", buf, 0, e, true); 3481 if (LogLevel > 3) 3482 sm_syslog(LOG_INFO, e->e_id, 3483 "Authentication-Warning: %.400s", 3484 buf); 3485 } 3486} 3487/* 3488** GETEXTENV -- get from external environment 3489** 3490** Parameters: 3491** envar -- the name of the variable to retrieve 3492** 3493** Returns: 3494** The value, if any. 3495*/ 3496 3497static char * 3498getextenv(envar) 3499 const char *envar; 3500{ 3501 char **envp; 3502 int l; 3503 3504 l = strlen(envar); 3505 for (envp = ExternalEnviron; envp != NULL && *envp != NULL; envp++) 3506 { 3507 if (strncmp(*envp, envar, l) == 0 && (*envp)[l] == '=') 3508 return &(*envp)[l + 1]; 3509 } 3510 return NULL; 3511} 3512/* 3513** SM_SETUSERENV -- set an environment variable in the propagated environment 3514** 3515** Parameters: 3516** envar -- the name of the environment variable. 3517** value -- the value to which it should be set. If 3518** null, this is extracted from the incoming 3519** environment. If that is not set, the call 3520** to sm_setuserenv is ignored. 3521** 3522** Returns: 3523** none. 3524*/ 3525 3526void 3527sm_setuserenv(envar, value) 3528 const char *envar; 3529 const char *value; 3530{ 3531 int i, l; 3532 char **evp = UserEnviron; 3533 char *p; 3534 3535 if (value == NULL) 3536 { 3537 value = getextenv(envar); 3538 if (value == NULL) 3539 return; 3540 } 3541 3542 /* XXX enforce reasonable size? */ 3543 i = strlen(envar) + 1; 3544 l = strlen(value) + i + 1; 3545 p = (char *) xalloc(l); 3546 (void) sm_strlcpyn(p, l, 3, envar, "=", value); 3547 3548 while (*evp != NULL && strncmp(*evp, p, i) != 0) 3549 evp++; 3550 if (*evp != NULL) 3551 { 3552 *evp++ = p; 3553 } 3554 else if (evp < &UserEnviron[MAXUSERENVIRON]) 3555 { 3556 *evp++ = p; 3557 *evp = NULL; 3558 } 3559 3560 /* make sure it is in our environment as well */ 3561 if (putenv(p) < 0) 3562 syserr("sm_setuserenv: putenv(%s) failed", p); 3563} 3564/* 3565** DUMPSTATE -- dump state 3566** 3567** For debugging. 3568*/ 3569 3570void 3571dumpstate(when) 3572 char *when; 3573{ 3574 register char *j = macvalue('j', CurEnv); 3575 int rs; 3576 extern int NextMacroId; 3577 3578 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3579 "--- dumping state on %s: $j = %s ---", 3580 when, 3581 j == NULL ? "<NULL>" : j); 3582 if (j != NULL) 3583 { 3584 if (!wordinclass(j, 'w')) 3585 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3586 "*** $j not in $=w ***"); 3587 } 3588 sm_syslog(LOG_DEBUG, CurEnv->e_id, "CurChildren = %d", CurChildren); 3589 sm_syslog(LOG_DEBUG, CurEnv->e_id, "NextMacroId = %d (Max %d)", 3590 NextMacroId, MAXMACROID); 3591 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- open file descriptors: ---"); 3592 printopenfds(true); 3593 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- connection cache: ---"); 3594 mci_dump_all(smioout, true); 3595 rs = strtorwset("debug_dumpstate", NULL, ST_FIND); 3596 if (rs > 0) 3597 { 3598 int status; 3599 register char **pvp; 3600 char *pv[MAXATOM + 1]; 3601 3602 pv[0] = NULL; 3603 status = REWRITE(pv, rs, CurEnv); 3604 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3605 "--- ruleset debug_dumpstate returns stat %d, pv: ---", 3606 status); 3607 for (pvp = pv; *pvp != NULL; pvp++) 3608 sm_syslog(LOG_DEBUG, CurEnv->e_id, "%s", *pvp); 3609 } 3610 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- end of state dump ---"); 3611} 3612 3613#ifdef SIGUSR1 3614/* 3615** SIGUSR1 -- Signal a request to dump state. 3616** 3617** Parameters: 3618** sig -- calling signal. 3619** 3620** Returns: 3621** none. 3622** 3623** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3624** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3625** DOING. 3626** 3627** XXX: More work is needed for this signal handler. 3628*/ 3629 3630/* ARGSUSED */ 3631static SIGFUNC_DECL 3632sigusr1(sig) 3633 int sig; 3634{ 3635 int save_errno = errno; 3636 3637 FIX_SYSV_SIGNAL(sig, sigusr1); 3638 errno = save_errno; 3639 CHECK_CRITICAL(sig); 3640 dumpstate("user signal"); 3641# if SM_HEAP_CHECK 3642 dumpstab(); 3643# endif /* SM_HEAP_CHECK */ 3644 errno = save_errno; 3645 return SIGFUNC_RETURN; 3646} 3647#endif /* SIGUSR1 */ 3648 3649/* 3650** DROP_PRIVILEGES -- reduce privileges to those of the RunAsUser option 3651** 3652** Parameters: 3653** to_real_uid -- if set, drop to the real uid instead 3654** of the RunAsUser. 3655** 3656** Returns: 3657** EX_OSERR if the setuid failed. 3658** EX_OK otherwise. 3659*/ 3660 3661int 3662drop_privileges(to_real_uid) 3663 bool to_real_uid; 3664{ 3665 int rval = EX_OK; 3666 GIDSET_T emptygidset[1]; 3667 3668 if (tTd(47, 1)) 3669 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", 3670 (int) to_real_uid, 3671 (int) RealUid, (int) RealGid, 3672 (int) getuid(), (int) getgid(), 3673 (int) geteuid(), (int) getegid(), 3674 (int) RunAsUid, (int) RunAsGid); 3675 3676 if (to_real_uid) 3677 { 3678 RunAsUserName = RealUserName; 3679 RunAsUid = RealUid; 3680 RunAsGid = RealGid; 3681 EffGid = RunAsGid; 3682 } 3683 3684 /* make sure no one can grab open descriptors for secret files */ 3685 endpwent(); 3686 sm_mbdb_terminate(); 3687 3688 /* reset group permissions; these can be set later */ 3689 emptygidset[0] = (to_real_uid || RunAsGid != 0) ? RunAsGid : getegid(); 3690 3691 /* 3692 ** Notice: on some OS (Linux...) the setgroups() call causes 3693 ** a logfile entry if sendmail is not run by root. 3694 ** However, it is unclear (no POSIX standard) whether 3695 ** setgroups() can only succeed if executed by root. 3696 ** So for now we keep it as it is; if you want to change it, use 3697 ** if (geteuid() == 0 && setgroups(1, emptygidset) == -1) 3698 */ 3699 3700 if (setgroups(1, emptygidset) == -1 && geteuid() == 0) 3701 { 3702 syserr("drop_privileges: setgroups(1, %d) failed", 3703 (int) emptygidset[0]); 3704 rval = EX_OSERR; 3705 } 3706 3707 /* reset primary group id */ 3708 if (to_real_uid) 3709 { 3710 /* 3711 ** Drop gid to real gid. 3712 ** On some OS we must reset the effective[/real[/saved]] gid, 3713 ** and then use setgid() to finally drop all group privileges. 3714 ** Later on we check whether we can get back the 3715 ** effective gid. 3716 */ 3717 3718#if HASSETEGID 3719 if (setegid(RunAsGid) < 0) 3720 { 3721 syserr("drop_privileges: setegid(%d) failed", 3722 (int) RunAsGid); 3723 rval = EX_OSERR; 3724 } 3725#else /* HASSETEGID */ 3726# if HASSETREGID 3727 if (setregid(RunAsGid, RunAsGid) < 0) 3728 { 3729 syserr("drop_privileges: setregid(%d, %d) failed", 3730 (int) RunAsGid, (int) RunAsGid); 3731 rval = EX_OSERR; 3732 } 3733# else /* HASSETREGID */ 3734# if HASSETRESGID 3735 if (setresgid(RunAsGid, RunAsGid, RunAsGid) < 0) 3736 { 3737 syserr("drop_privileges: setresgid(%d, %d, %d) failed", 3738 (int) RunAsGid, (int) RunAsGid, (int) RunAsGid); 3739 rval = EX_OSERR; 3740 } 3741# endif /* HASSETRESGID */ 3742# endif /* HASSETREGID */ 3743#endif /* HASSETEGID */ 3744 } 3745 if (rval == EX_OK && (to_real_uid || RunAsGid != 0)) 3746 { 3747 if (setgid(RunAsGid) < 0 && (!UseMSP || getegid() != RunAsGid)) 3748 { 3749 syserr("drop_privileges: setgid(%d) failed", 3750 (int) RunAsGid); 3751 rval = EX_OSERR; 3752 } 3753 errno = 0; 3754 if (rval == EX_OK && getegid() != RunAsGid) 3755 { 3756 syserr("drop_privileges: Unable to set effective gid=%d to RunAsGid=%d", 3757 (int) getegid(), (int) RunAsGid); 3758 rval = EX_OSERR; 3759 } 3760 } 3761 3762 /* fiddle with uid */ 3763 if (to_real_uid || RunAsUid != 0) 3764 { 3765 uid_t euid; 3766 3767 /* 3768 ** Try to setuid(RunAsUid). 3769 ** euid must be RunAsUid, 3770 ** ruid must be RunAsUid unless (e|r)uid wasn't 0 3771 ** and we didn't have to drop privileges to the real uid. 3772 */ 3773 3774 if (setuid(RunAsUid) < 0 || 3775 geteuid() != RunAsUid || 3776 (getuid() != RunAsUid && 3777 (to_real_uid || geteuid() == 0 || getuid() == 0))) 3778 { 3779#if HASSETREUID 3780 /* 3781 ** if ruid != RunAsUid, euid == RunAsUid, then 3782 ** try resetting just the real uid, then using 3783 ** setuid() to drop the saved-uid as well. 3784 */ 3785 3786 if (geteuid() == RunAsUid) 3787 { 3788 if (setreuid(RunAsUid, -1) < 0) 3789 { 3790 syserr("drop_privileges: setreuid(%d, -1) failed", 3791 (int) RunAsUid); 3792 rval = EX_OSERR; 3793 } 3794 if (setuid(RunAsUid) < 0) 3795 { 3796 syserr("drop_privileges: second setuid(%d) attempt failed", 3797 (int) RunAsUid); 3798 rval = EX_OSERR; 3799 } 3800 } 3801 else 3802#endif /* HASSETREUID */ 3803 { 3804 syserr("drop_privileges: setuid(%d) failed", 3805 (int) RunAsUid); 3806 rval = EX_OSERR; 3807 } 3808 } 3809 euid = geteuid(); 3810 if (RunAsUid != 0 && setuid(0) == 0) 3811 { 3812 /* 3813 ** Believe it or not, the Linux capability model 3814 ** allows a non-root process to override setuid() 3815 ** on a process running as root and prevent that 3816 ** process from dropping privileges. 3817 */ 3818 3819 syserr("drop_privileges: setuid(0) succeeded (when it should not)"); 3820 rval = EX_OSERR; 3821 } 3822 else if (RunAsUid != euid && setuid(euid) == 0) 3823 { 3824 /* 3825 ** Some operating systems will keep the saved-uid 3826 ** if a non-root effective-uid calls setuid(real-uid) 3827 ** making it possible to set it back again later. 3828 */ 3829 3830 syserr("drop_privileges: Unable to drop non-root set-user-ID privileges"); 3831 rval = EX_OSERR; 3832 } 3833 } 3834 3835 if ((to_real_uid || RunAsGid != 0) && 3836 rval == EX_OK && RunAsGid != EffGid && 3837 getuid() != 0 && geteuid() != 0) 3838 { 3839 errno = 0; 3840 if (setgid(EffGid) == 0) 3841 { 3842 syserr("drop_privileges: setgid(%d) succeeded (when it should not)", 3843 (int) EffGid); 3844 rval = EX_OSERR; 3845 } 3846 } 3847 3848 if (tTd(47, 5)) 3849 { 3850 sm_dprintf("drop_privileges: e/ruid = %d/%d e/rgid = %d/%d\n", 3851 (int) geteuid(), (int) getuid(), 3852 (int) getegid(), (int) getgid()); 3853 sm_dprintf("drop_privileges: RunAsUser = %d:%d\n", 3854 (int) RunAsUid, (int) RunAsGid); 3855 if (tTd(47, 10)) 3856 sm_dprintf("drop_privileges: rval = %d\n", rval); 3857 } 3858 return rval; 3859} 3860/* 3861** FILL_FD -- make sure a file descriptor has been properly allocated 3862** 3863** Used to make sure that stdin/out/err are allocated on startup 3864** 3865** Parameters: 3866** fd -- the file descriptor to be filled. 3867** where -- a string used for logging. If NULL, this is 3868** being called on startup, and logging should 3869** not be done. 3870** 3871** Returns: 3872** none 3873** 3874** Side Effects: 3875** possibly changes MissingFds 3876*/ 3877 3878void 3879fill_fd(fd, where) 3880 int fd; 3881 char *where; 3882{ 3883 int i; 3884 struct stat stbuf; 3885 3886 if (fstat(fd, &stbuf) >= 0 || errno != EBADF) 3887 return; 3888 3889 if (where != NULL) 3890 syserr("fill_fd: %s: fd %d not open", where, fd); 3891 else 3892 MissingFds |= 1 << fd; 3893 i = open(SM_PATH_DEVNULL, fd == 0 ? O_RDONLY : O_WRONLY, 0666); 3894 if (i < 0) 3895 { 3896 syserr("!fill_fd: %s: cannot open %s", 3897 where == NULL ? "startup" : where, SM_PATH_DEVNULL); 3898 } 3899 if (fd != i) 3900 { 3901 (void) dup2(i, fd); 3902 (void) close(i); 3903 } 3904} 3905/* 3906** SM_PRINTOPTIONS -- print options 3907** 3908** Parameters: 3909** options -- array of options. 3910** 3911** Returns: 3912** none. 3913*/ 3914 3915static void 3916sm_printoptions(options) 3917 char **options; 3918{ 3919 int ll; 3920 char **av; 3921 3922 av = options; 3923 ll = 7; 3924 while (*av != NULL) 3925 { 3926 if (ll + strlen(*av) > 63) 3927 { 3928 sm_dprintf("\n"); 3929 ll = 0; 3930 } 3931 if (ll == 0) 3932 sm_dprintf("\t\t"); 3933 else 3934 sm_dprintf(" "); 3935 sm_dprintf("%s", *av); 3936 ll += strlen(*av++) + 1; 3937 } 3938 sm_dprintf("\n"); 3939} 3940 3941/* 3942** TO8BIT -- convert \octal sequences in a test mode input line 3943** 3944** Parameters: 3945** str -- the input line. 3946** 3947** Returns: 3948** none. 3949** 3950** Side Effects: 3951** replaces \0octal in str with octal value. 3952*/ 3953 3954static bool to8bit __P((char *)); 3955 3956static bool 3957to8bit(str) 3958 char *str; 3959{ 3960 int c, len; 3961 char *out, *in; 3962 bool changed; 3963 3964 if (str == NULL) 3965 return false; 3966 in = out = str; 3967 changed = false; 3968 len = 0; 3969 while ((c = (*str++ & 0377)) != '\0') 3970 { 3971 int oct, nxtc; 3972 3973 ++len; 3974 if (c == '\\' && 3975 (nxtc = (*str & 0377)) == '0') 3976 { 3977 oct = 0; 3978 while ((nxtc = (*str & 0377)) != '\0' && 3979 isascii(nxtc) && isdigit(nxtc)) 3980 { 3981 oct <<= 3; 3982 oct += nxtc - '0'; 3983 ++str; 3984 ++len; 3985 } 3986 changed = true; 3987 c = oct; 3988 } 3989 *out++ = c; 3990 } 3991 *out++ = c; 3992 if (changed) 3993 { 3994 char *q; 3995 3996 q = quote_internal_chars(in, in, &len); 3997 if (q != in) 3998 sm_strlcpy(in, q, len); 3999 } 4000 return changed; 4001} 4002 4003/* 4004** TESTMODELINE -- process a test mode input line 4005** 4006** Parameters: 4007** line -- the input line. 4008** e -- the current environment. 4009** Syntax: 4010** # a comment 4011** .X process X as a configuration line 4012** =X dump a configuration item (such as mailers) 4013** $X dump a macro or class 4014** /X try an activity 4015** X normal process through rule set X 4016*/ 4017 4018static void 4019testmodeline(line, e) 4020 char *line; 4021 ENVELOPE *e; 4022{ 4023 register char *p; 4024 char *q; 4025 auto char *delimptr; 4026 int mid; 4027 int i, rs; 4028 STAB *map; 4029 char **s; 4030 struct rewrite *rw; 4031 ADDRESS a; 4032 char *lbp; 4033 auto int lbs; 4034 static int tryflags = RF_COPYNONE; 4035 char exbuf[MAXLINE]; 4036 char lbuf[MAXLINE]; 4037 extern unsigned char TokTypeNoC[]; 4038 bool eightbit; 4039 4040 /* skip leading spaces */ 4041 while (*line == ' ') 4042 line++; 4043 4044 lbp = NULL; 4045 eightbit = false; 4046 switch (line[0]) 4047 { 4048 case '#': 4049 case '\0': 4050 return; 4051 4052 case '?': 4053 help("-bt", e); 4054 return; 4055 4056 case '.': /* config-style settings */ 4057 switch (line[1]) 4058 { 4059 case 'D': 4060 mid = macid_parse(&line[2], &delimptr); 4061 if (mid == 0) 4062 return; 4063 lbs = sizeof(lbuf); 4064 lbp = translate_dollars(delimptr, lbuf, &lbs); 4065 macdefine(&e->e_macro, A_TEMP, mid, lbp); 4066 if (lbp != lbuf) 4067 SM_FREE(lbp); 4068 break; 4069 4070 case 'C': 4071 if (line[2] == '\0') /* not to call syserr() */ 4072 return; 4073 4074 mid = macid_parse(&line[2], &delimptr); 4075 if (mid == 0) 4076 return; 4077 lbs = sizeof(lbuf); 4078 lbp = translate_dollars(delimptr, lbuf, &lbs); 4079 expand(lbp, exbuf, sizeof(exbuf), e); 4080 if (lbp != lbuf) 4081 SM_FREE(lbp); 4082 p = exbuf; 4083 while (*p != '\0') 4084 { 4085 register char *wd; 4086 char delim; 4087 4088 while (*p != '\0' && isascii(*p) && isspace(*p)) 4089 p++; 4090 wd = p; 4091 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 4092 p++; 4093 delim = *p; 4094 *p = '\0'; 4095 if (wd[0] != '\0') 4096 setclass(mid, wd); 4097 *p = delim; 4098 } 4099 break; 4100 4101 case '\0': 4102 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4103 "Usage: .[DC]macro value(s)\n"); 4104 break; 4105 4106 default: 4107 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4108 "Unknown \".\" command %s\n", line); 4109 break; 4110 } 4111 return; 4112 4113 case '=': /* config-style settings */ 4114 switch (line[1]) 4115 { 4116 case 'S': /* dump rule set */ 4117 rs = strtorwset(&line[2], NULL, ST_FIND); 4118 if (rs < 0) 4119 { 4120 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4121 "Undefined ruleset %s\n", &line[2]); 4122 return; 4123 } 4124 rw = RewriteRules[rs]; 4125 if (rw == NULL) 4126 return; 4127 do 4128 { 4129 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4130 'R'); 4131 s = rw->r_lhs; 4132 while (*s != NULL) 4133 { 4134 xputs(smioout, *s++); 4135 (void) sm_io_putc(smioout, 4136 SM_TIME_DEFAULT, ' '); 4137 } 4138 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4139 '\t'); 4140 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4141 '\t'); 4142 s = rw->r_rhs; 4143 while (*s != NULL) 4144 { 4145 xputs(smioout, *s++); 4146 (void) sm_io_putc(smioout, 4147 SM_TIME_DEFAULT, ' '); 4148 } 4149 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4150 '\n'); 4151 } while ((rw = rw->r_next) != NULL); 4152 break; 4153 4154 case 'M': 4155 for (i = 0; i < MAXMAILERS; i++) 4156 { 4157 if (Mailer[i] != NULL) 4158 printmailer(smioout, Mailer[i]); 4159 } 4160 break; 4161 4162 case '\0': 4163 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4164 "Usage: =Sruleset or =M\n"); 4165 break; 4166 4167 default: 4168 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4169 "Unknown \"=\" command %s\n", line); 4170 break; 4171 } 4172 return; 4173 4174 case '-': /* set command-line-like opts */ 4175 switch (line[1]) 4176 { 4177 case 'd': 4178 tTflag(&line[2]); 4179 break; 4180 4181 case '\0': 4182 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4183 "Usage: -d{debug arguments}\n"); 4184 break; 4185 4186 default: 4187 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4188 "Unknown \"-\" command %s\n", line); 4189 break; 4190 } 4191 return; 4192 4193 case '$': 4194 if (line[1] == '=') 4195 { 4196 mid = macid(&line[2]); 4197 if (mid != 0) 4198 stabapply(dump_class, mid); 4199 return; 4200 } 4201 mid = macid(&line[1]); 4202 if (mid == 0) 4203 return; 4204 p = macvalue(mid, e); 4205 if (p == NULL) 4206 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4207 "Undefined\n"); 4208 else 4209 { 4210 xputs(smioout, p); 4211 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4212 "\n"); 4213 } 4214 return; 4215 4216 case '/': /* miscellaneous commands */ 4217 p = &line[strlen(line)]; 4218 while (--p >= line && isascii(*p) && isspace(*p)) 4219 *p = '\0'; 4220 p = strpbrk(line, " \t"); 4221 if (p != NULL) 4222 { 4223 while (isascii(*p) && isspace(*p)) 4224 *p++ = '\0'; 4225 } 4226 else 4227 p = ""; 4228 if (line[1] == '\0') 4229 { 4230 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4231 "Usage: /[canon|map|mx|parse|try|tryflags]\n"); 4232 return; 4233 } 4234 if (sm_strcasecmp(&line[1], "quit") == 0) 4235 { 4236 CurEnv->e_id = NULL; 4237 finis(true, true, ExitStat); 4238 /* NOTREACHED */ 4239 } 4240 if (sm_strcasecmp(&line[1], "mx") == 0) 4241 { 4242#if NAMED_BIND 4243 /* look up MX records */ 4244 int nmx; 4245 auto int rcode; 4246 char *mxhosts[MAXMXHOSTS + 1]; 4247 4248 if (*p == '\0') 4249 { 4250 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4251 "Usage: /mx address\n"); 4252 return; 4253 } 4254 nmx = getmxrr(p, mxhosts, NULL, false, &rcode, true, 4255 NULL); 4256 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4257 "getmxrr(%s) returns %d value(s):\n", 4258 p, nmx); 4259 for (i = 0; i < nmx; i++) 4260 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4261 "\t%s\n", mxhosts[i]); 4262#else /* NAMED_BIND */ 4263 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4264 "No MX code compiled in\n"); 4265#endif /* NAMED_BIND */ 4266 } 4267 else if (sm_strcasecmp(&line[1], "canon") == 0) 4268 { 4269 char host[MAXHOSTNAMELEN]; 4270 4271 if (*p == '\0') 4272 { 4273 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4274 "Usage: /canon address\n"); 4275 return; 4276 } 4277 else if (sm_strlcpy(host, p, sizeof(host)) >= sizeof(host)) 4278 { 4279 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4280 "Name too long\n"); 4281 return; 4282 } 4283 (void) getcanonname(host, sizeof(host), !HasWildcardMX, 4284 NULL); 4285 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4286 "getcanonname(%s) returns %s\n", 4287 p, host); 4288 } 4289 else if (sm_strcasecmp(&line[1], "map") == 0) 4290 { 4291 auto int rcode = EX_OK; 4292 char *av[2]; 4293 4294 if (*p == '\0') 4295 { 4296 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4297 "Usage: /map mapname key\n"); 4298 return; 4299 } 4300 for (q = p; *q != '\0' && !(isascii(*q) && isspace(*q)); q++) 4301 continue; 4302 if (*q == '\0') 4303 { 4304 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4305 "No key specified\n"); 4306 return; 4307 } 4308 *q++ = '\0'; 4309 map = stab(p, ST_MAP, ST_FIND); 4310 if (map == NULL) 4311 { 4312 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4313 "Map named \"%s\" not found\n", p); 4314 return; 4315 } 4316 if (!bitset(MF_OPEN, map->s_map.map_mflags) && 4317 !openmap(&(map->s_map))) 4318 { 4319 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4320 "Map named \"%s\" not open\n", p); 4321 return; 4322 } 4323 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4324 "map_lookup: %s (%s) ", p, q); 4325 av[0] = q; 4326 av[1] = NULL; 4327 p = (*map->s_map.map_class->map_lookup) 4328 (&map->s_map, q, av, &rcode); 4329 if (p == NULL) 4330 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4331 "no match (%d)\n", 4332 rcode); 4333 else 4334 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4335 "returns %s (%d)\n", p, 4336 rcode); 4337 } 4338 else if (sm_strcasecmp(&line[1], "try") == 0) 4339 { 4340 MAILER *m; 4341 STAB *st; 4342 auto int rcode = EX_OK; 4343 4344 q = strpbrk(p, " \t"); 4345 if (q != NULL) 4346 { 4347 while (isascii(*q) && isspace(*q)) 4348 *q++ = '\0'; 4349 } 4350 if (q == NULL || *q == '\0') 4351 { 4352 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4353 "Usage: /try mailer address\n"); 4354 return; 4355 } 4356 st = stab(p, ST_MAILER, ST_FIND); 4357 if (st == NULL) 4358 { 4359 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4360 "Unknown mailer %s\n", p); 4361 return; 4362 } 4363 m = st->s_mailer; 4364 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4365 "Trying %s %s address %s for mailer %s\n", 4366 bitset(RF_HEADERADDR, tryflags) ? "header" 4367 : "envelope", 4368 bitset(RF_SENDERADDR, tryflags) ? "sender" 4369 : "recipient", q, p); 4370 p = remotename(q, m, tryflags, &rcode, CurEnv); 4371 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4372 "Rcode = %d, addr = %s\n", 4373 rcode, p == NULL ? "<NULL>" : p); 4374 e->e_to = NULL; 4375 } 4376 else if (sm_strcasecmp(&line[1], "tryflags") == 0) 4377 { 4378 if (*p == '\0') 4379 { 4380 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4381 "Usage: /tryflags [Hh|Ee][Ss|Rr]\n"); 4382 return; 4383 } 4384 for (; *p != '\0'; p++) 4385 { 4386 switch (*p) 4387 { 4388 case 'H': 4389 case 'h': 4390 tryflags |= RF_HEADERADDR; 4391 break; 4392 4393 case 'E': 4394 case 'e': 4395 tryflags &= ~RF_HEADERADDR; 4396 break; 4397 4398 case 'S': 4399 case 's': 4400 tryflags |= RF_SENDERADDR; 4401 break; 4402 4403 case 'R': 4404 case 'r': 4405 tryflags &= ~RF_SENDERADDR; 4406 break; 4407 } 4408 } 4409 exbuf[0] = bitset(RF_HEADERADDR, tryflags) ? 'h' : 'e'; 4410 exbuf[1] = ' '; 4411 exbuf[2] = bitset(RF_SENDERADDR, tryflags) ? 's' : 'r'; 4412 exbuf[3] = '\0'; 4413 macdefine(&e->e_macro, A_TEMP, 4414 macid("{addr_type}"), exbuf); 4415 } 4416 else if (sm_strcasecmp(&line[1], "parse") == 0) 4417 { 4418 if (*p == '\0') 4419 { 4420 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4421 "Usage: /parse address\n"); 4422 return; 4423 } 4424 q = crackaddr(p, e); 4425 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4426 "Cracked address = "); 4427 xputs(smioout, q); 4428 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4429 "\nParsing %s %s address\n", 4430 bitset(RF_HEADERADDR, tryflags) ? 4431 "header" : "envelope", 4432 bitset(RF_SENDERADDR, tryflags) ? 4433 "sender" : "recipient"); 4434 if (parseaddr(p, &a, tryflags, '\0', NULL, e, true) 4435 == NULL) 4436 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4437 "Cannot parse\n"); 4438 else if (a.q_host != NULL && a.q_host[0] != '\0') 4439 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4440 "mailer %s, host %s, user %s\n", 4441 a.q_mailer->m_name, 4442 a.q_host, 4443 a.q_user); 4444 else 4445 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4446 "mailer %s, user %s\n", 4447 a.q_mailer->m_name, 4448 a.q_user); 4449 e->e_to = NULL; 4450 } 4451 else if (sm_strcasecmp(&line[1], "header") == 0) 4452 { 4453 unsigned long ul; 4454 4455 ul = chompheader(p, CHHDR_CHECK|CHHDR_USER, NULL, e); 4456 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4457 "ul = %lu\n", ul); 4458 } 4459 else 4460 { 4461 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4462 "Unknown \"/\" command %s\n", 4463 line); 4464 } 4465 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 4466 return; 4467 } 4468 4469 for (p = line; isascii(*p) && isspace(*p); p++) 4470 continue; 4471 q = p; 4472 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 4473 p++; 4474 if (*p == '\0') 4475 { 4476 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4477 "No address!\n"); 4478 return; 4479 } 4480 *p = '\0'; 4481 if (tTd(23, 101)) 4482 eightbit = to8bit(p + 1); 4483 if (invalidaddr(p + 1, NULL, true)) 4484 return; 4485 do 4486 { 4487 register char **pvp; 4488 char pvpbuf[PSBUFSIZE]; 4489 4490 pvp = prescan(++p, ',', pvpbuf, sizeof(pvpbuf), &delimptr, 4491 ConfigLevel >= 9 ? TokTypeNoC : ExtTokenTab, false); 4492 if (pvp == NULL) 4493 continue; 4494 p = q; 4495 while (*p != '\0') 4496 { 4497 int status; 4498 4499 rs = strtorwset(p, NULL, ST_FIND); 4500 if (rs < 0) 4501 { 4502 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4503 "Undefined ruleset %s\n", 4504 p); 4505 break; 4506 } 4507 status = REWRITE(pvp, rs, e); 4508 if (status != EX_OK) 4509 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4510 "== Ruleset %s (%d) status %d\n", 4511 p, rs, status); 4512 else if (eightbit) 4513 { 4514 cataddr(pvp, NULL, exbuf, sizeof(exbuf), '\0', 4515 true); 4516 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4517 "cataddr: %s\n", 4518 str2prt(exbuf)); 4519 } 4520 while (*p != '\0' && *p++ != ',') 4521 continue; 4522 } 4523 } while (*(p = delimptr) != '\0'); 4524 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 4525} 4526 4527static void 4528dump_class(s, id) 4529 register STAB *s; 4530 int id; 4531{ 4532 if (s->s_symtype != ST_CLASS) 4533 return; 4534 if (bitnset(bitidx(id), s->s_class)) 4535 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4536 "%s\n", s->s_name); 4537} 4538 4539/* 4540** An exception type used to create QuickAbort exceptions. 4541** This is my first cut at converting QuickAbort from longjmp to exceptions. 4542** These exceptions have a single integer argument, which is the argument 4543** to longjmp in the original code (either 1 or 2). I don't know the 4544** significance of 1 vs 2: the calls to setjmp don't care. 4545*/ 4546 4547const SM_EXC_TYPE_T EtypeQuickAbort = 4548{ 4549 SmExcTypeMagic, 4550 "E:mta.quickabort", 4551 "i", 4552 sm_etype_printf, 4553 "quick abort %0", 4554}; 4555