main.c revision 168515
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 8.962 2006/12/19 19:47:37 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 (void) runqueue(true, false, queuepersistent, true); 2366 2367 /* 2368 ** If queuepersistent but not in daemon mode then 2369 ** we're going to do the queue runner monitoring here. 2370 ** If in daemon mode then the monitoring will happen 2371 ** elsewhere. 2372 */ 2373 2374 if (OpMode != MD_DAEMON && queuepersistent) 2375 { 2376 /* 2377 ** Write the pid to file 2378 ** XXX Overwrites sendmail.pid 2379 */ 2380 2381 log_sendmail_pid(&MainEnvelope); 2382 2383 /* set the title to make it easier to find */ 2384 sm_setproctitle(true, CurEnv, "Queue control"); 2385 (void) sm_signal(SIGCHLD, SIG_DFL); 2386 while (CurChildren > 0) 2387 { 2388 int status; 2389 pid_t ret; 2390 int group; 2391 2392 CHECK_RESTART; 2393 errno = 0; 2394 while ((ret = sm_wait(&status)) <= 0) 2395 { 2396 /* 2397 ** Waiting for non-existent 2398 ** children shouldn't happen. 2399 ** Let's get out of here if 2400 ** it occurs. 2401 */ 2402 2403 if (errno == ECHILD) 2404 { 2405 CurChildren = 0; 2406 break; 2407 } 2408 continue; 2409 } 2410 2411 /* something is really really wrong */ 2412 if (errno == ECHILD) 2413 { 2414 sm_syslog(LOG_ERR, NOQID, 2415 "persistent queue runner control process: lost all children: wait returned ECHILD"); 2416 break; 2417 } 2418 2419 if (WIFSTOPPED(status)) 2420 continue; 2421 2422 /* Probe only on a child status */ 2423 proc_list_drop(ret, status, &group); 2424 2425 if (WIFSIGNALED(status)) 2426 { 2427 if (WCOREDUMP(status)) 2428 { 2429 sm_syslog(LOG_ERR, NOQID, 2430 "persistent queue runner=%d core dumped, signal=%d", 2431 group, WTERMSIG(status)); 2432 2433 /* don't restart this */ 2434 mark_work_group_restart( 2435 group, -1); 2436 continue; 2437 } 2438 2439 sm_syslog(LOG_ERR, NOQID, 2440 "persistent queue runner=%d died, pid=%ld, signal=%d", 2441 group, (long) ret, 2442 WTERMSIG(status)); 2443 } 2444 2445 /* 2446 ** When debugging active, don't 2447 ** restart the persistent queues. 2448 ** But do log this as info. 2449 */ 2450 2451 if (sm_debug_active(&DebugNoPRestart, 2452 1)) 2453 { 2454 sm_syslog(LOG_DEBUG, NOQID, 2455 "persistent queue runner=%d, exited", 2456 group); 2457 mark_work_group_restart(group, 2458 -1); 2459 } 2460 CHECK_RESTART; 2461 } 2462 finis(true, true, ExitStat); 2463 /* NOTREACHED */ 2464 } 2465 2466 if (OpMode != MD_DAEMON) 2467 { 2468 char qtype[200]; 2469 2470 /* 2471 ** Write the pid to file 2472 ** XXX Overwrites sendmail.pid 2473 */ 2474 2475 log_sendmail_pid(&MainEnvelope); 2476 2477 /* set the title to make it easier to find */ 2478 qtype[0] = '\0'; 2479 (void) sm_strlcpyn(qtype, sizeof(qtype), 4, 2480 "Queue runner@", 2481 pintvl(QueueIntvl, true), 2482 " for ", 2483 QueueDir); 2484 sm_setproctitle(true, CurEnv, qtype); 2485 for (;;) 2486 { 2487 (void) pause(); 2488 2489 CHECK_RESTART; 2490 2491 if (doqueuerun()) 2492 (void) runqueue(true, false, 2493 false, false); 2494 } 2495 } 2496 } 2497 dropenvelope(&MainEnvelope, true, false); 2498 2499#if STARTTLS 2500 /* init TLS for server, ignore result for now */ 2501 (void) initsrvtls(tls_ok); 2502#endif /* STARTTLS */ 2503 2504 nextreq: 2505 p_flags = getrequests(&MainEnvelope); 2506 2507 /* drop privileges */ 2508 (void) drop_privileges(false); 2509 2510 /* 2511 ** Get authentication data 2512 ** Set _ macro in BlankEnvelope before calling newenvelope(). 2513 */ 2514 2515 authinfo = getauthinfo(sm_io_getinfo(InChannel, SM_IO_WHAT_FD, 2516 NULL), &forged); 2517 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo); 2518 2519 /* at this point we are in a child: reset state */ 2520 sm_rpool_free(MainEnvelope.e_rpool); 2521 (void) newenvelope(&MainEnvelope, &MainEnvelope, 2522 sm_rpool_new_x(NULL)); 2523 } 2524 2525 if (LogLevel > 9) 2526 { 2527 /* log connection information */ 2528 sm_syslog(LOG_INFO, NULL, "connect from %s", authinfo); 2529 } 2530 2531 /* 2532 ** If running SMTP protocol, start collecting and executing 2533 ** commands. This will never return. 2534 */ 2535 2536 if (OpMode == MD_SMTP || OpMode == MD_DAEMON) 2537 { 2538 char pbuf[20]; 2539 2540 /* 2541 ** Save some macros for check_* rulesets. 2542 */ 2543 2544 if (forged) 2545 { 2546 char ipbuf[103]; 2547 2548 (void) sm_snprintf(ipbuf, sizeof(ipbuf), "[%.100s]", 2549 anynet_ntoa(&RealHostAddr)); 2550 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2551 macid("{client_name}"), ipbuf); 2552 } 2553 else 2554 macdefine(&BlankEnvelope.e_macro, A_PERM, 2555 macid("{client_name}"), RealHostName); 2556 macdefine(&BlankEnvelope.e_macro, A_PERM, 2557 macid("{client_ptr}"), RealHostName); 2558 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2559 macid("{client_addr}"), anynet_ntoa(&RealHostAddr)); 2560 sm_getla(); 2561 2562 switch (RealHostAddr.sa.sa_family) 2563 { 2564#if NETINET 2565 case AF_INET: 2566 (void) sm_snprintf(pbuf, sizeof(pbuf), "%d", 2567 RealHostAddr.sin.sin_port); 2568 break; 2569#endif /* NETINET */ 2570#if NETINET6 2571 case AF_INET6: 2572 (void) sm_snprintf(pbuf, sizeof(pbuf), "%d", 2573 RealHostAddr.sin6.sin6_port); 2574 break; 2575#endif /* NETINET6 */ 2576 default: 2577 (void) sm_snprintf(pbuf, sizeof(pbuf), "0"); 2578 break; 2579 } 2580 macdefine(&BlankEnvelope.e_macro, A_TEMP, 2581 macid("{client_port}"), pbuf); 2582 2583 if (OpMode == MD_DAEMON) 2584 { 2585 ENVELOPE *saved_env; 2586 2587 /* validate the connection */ 2588 HoldErrs = true; 2589 saved_env = CurEnv; 2590 CurEnv = &BlankEnvelope; 2591 nullserver = validate_connection(&RealHostAddr, 2592 macvalue(macid("{client_name}"), 2593 &BlankEnvelope), 2594 &BlankEnvelope); 2595 if (bitset(EF_DISCARD, BlankEnvelope.e_flags)) 2596 MainEnvelope.e_flags |= EF_DISCARD; 2597 CurEnv = saved_env; 2598 HoldErrs = false; 2599 } 2600 else if (p_flags == NULL) 2601 { 2602 p_flags = (BITMAP256 *) xalloc(sizeof(*p_flags)); 2603 clrbitmap(p_flags); 2604 } 2605#if STARTTLS 2606 if (OpMode == MD_SMTP) 2607 (void) initsrvtls(tls_ok); 2608#endif /* STARTTLS */ 2609 2610 /* turn off profiling */ 2611 SM_PROF(1); 2612 smtp(nullserver, *p_flags, &MainEnvelope); 2613 2614 if (tTd(93, 100)) 2615 { 2616 /* turn off profiling */ 2617 SM_PROF(0); 2618 if (OpMode == MD_DAEMON) 2619 goto nextreq; 2620 } 2621 } 2622 2623 sm_rpool_free(MainEnvelope.e_rpool); 2624 clearenvelope(&MainEnvelope, false, sm_rpool_new_x(NULL)); 2625 if (OpMode == MD_VERIFY) 2626 { 2627 set_delivery_mode(SM_VERIFY, &MainEnvelope); 2628 PostMasterCopy = NULL; 2629 } 2630 else 2631 { 2632 /* interactive -- all errors are global */ 2633 MainEnvelope.e_flags |= EF_GLOBALERRS|EF_LOGSENDER; 2634 } 2635 2636 /* 2637 ** Do basic system initialization and set the sender 2638 */ 2639 2640 initsys(&MainEnvelope); 2641 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{ntries}"), "0"); 2642 macdefine(&MainEnvelope.e_macro, A_PERM, macid("{nrcpts}"), "0"); 2643 setsender(from, &MainEnvelope, NULL, '\0', false); 2644 if (warn_f_flag != '\0' && !wordinclass(RealUserName, 't') && 2645 (!bitnset(M_LOCALMAILER, MainEnvelope.e_from.q_mailer->m_flags) || 2646 strcmp(MainEnvelope.e_from.q_user, RealUserName) != 0)) 2647 { 2648 auth_warning(&MainEnvelope, "%s set sender to %s using -%c", 2649 RealUserName, from, warn_f_flag); 2650#if SASL 2651 auth = false; 2652#endif /* SASL */ 2653 } 2654 if (auth) 2655 { 2656 char *fv; 2657 2658 /* set the initial sender for AUTH= to $f@$j */ 2659 fv = macvalue('f', &MainEnvelope); 2660 if (fv == NULL || *fv == '\0') 2661 MainEnvelope.e_auth_param = NULL; 2662 else 2663 { 2664 if (strchr(fv, '@') == NULL) 2665 { 2666 i = strlen(fv) + strlen(macvalue('j', 2667 &MainEnvelope)) + 2; 2668 p = sm_malloc_x(i); 2669 (void) sm_strlcpyn(p, i, 3, fv, "@", 2670 macvalue('j', 2671 &MainEnvelope)); 2672 } 2673 else 2674 p = sm_strdup_x(fv); 2675 MainEnvelope.e_auth_param = sm_rpool_strdup_x(MainEnvelope.e_rpool, 2676 xtextify(p, "=")); 2677 sm_free(p); /* XXX */ 2678 } 2679 } 2680 if (macvalue('s', &MainEnvelope) == NULL) 2681 macdefine(&MainEnvelope.e_macro, A_PERM, 's', RealHostName); 2682 2683 av = argv + optind; 2684 if (*av == NULL && !GrabTo) 2685 { 2686 MainEnvelope.e_to = NULL; 2687 MainEnvelope.e_flags |= EF_GLOBALERRS; 2688 HoldErrs = false; 2689 SuperSafe = SAFE_NO; 2690 usrerr("Recipient names must be specified"); 2691 2692 /* collect body for UUCP return */ 2693 if (OpMode != MD_VERIFY) 2694 collect(InChannel, false, NULL, &MainEnvelope, true); 2695 finis(true, true, EX_USAGE); 2696 /* NOTREACHED */ 2697 } 2698 2699 /* 2700 ** Scan argv and deliver the message to everyone. 2701 */ 2702 2703 save_val = LogUsrErrs; 2704 LogUsrErrs = true; 2705 sendtoargv(av, &MainEnvelope); 2706 LogUsrErrs = save_val; 2707 2708 /* if we have had errors sofar, arrange a meaningful exit stat */ 2709 if (Errors > 0 && ExitStat == EX_OK) 2710 ExitStat = EX_USAGE; 2711 2712#if _FFR_FIX_DASHT 2713 /* 2714 ** If using -t, force not sending to argv recipients, even 2715 ** if they are mentioned in the headers. 2716 */ 2717 2718 if (GrabTo) 2719 { 2720 ADDRESS *q; 2721 2722 for (q = MainEnvelope.e_sendqueue; q != NULL; q = q->q_next) 2723 q->q_state = QS_REMOVED; 2724 } 2725#endif /* _FFR_FIX_DASHT */ 2726 2727 /* 2728 ** Read the input mail. 2729 */ 2730 2731 MainEnvelope.e_to = NULL; 2732 if (OpMode != MD_VERIFY || GrabTo) 2733 { 2734 int savederrors; 2735 unsigned long savedflags; 2736 2737 /* 2738 ** workaround for compiler warning on Irix: 2739 ** do not initialize variable in the definition, but 2740 ** later on: 2741 ** warning(1548): transfer of control bypasses 2742 ** initialization of: 2743 ** variable "savederrors" (declared at line 2570) 2744 ** variable "savedflags" (declared at line 2571) 2745 ** goto giveup; 2746 */ 2747 2748 savederrors = Errors; 2749 savedflags = MainEnvelope.e_flags & EF_FATALERRS; 2750 MainEnvelope.e_flags |= EF_GLOBALERRS; 2751 MainEnvelope.e_flags &= ~EF_FATALERRS; 2752 Errors = 0; 2753 buffer_errors(); 2754 collect(InChannel, false, NULL, &MainEnvelope, true); 2755 2756 /* header checks failed */ 2757 if (Errors > 0) 2758 { 2759 giveup: 2760 if (!GrabTo) 2761 { 2762 /* Log who the mail would have gone to */ 2763 logundelrcpts(&MainEnvelope, 2764 MainEnvelope.e_message, 2765 8, false); 2766 } 2767 flush_errors(true); 2768 finis(true, true, ExitStat); 2769 /* NOTREACHED */ 2770 return -1; 2771 } 2772 2773 /* bail out if message too large */ 2774 if (bitset(EF_CLRQUEUE, MainEnvelope.e_flags)) 2775 { 2776 finis(true, true, ExitStat != EX_OK ? ExitStat 2777 : EX_DATAERR); 2778 /* NOTREACHED */ 2779 return -1; 2780 } 2781 2782 /* set message size */ 2783 (void) sm_snprintf(buf, sizeof(buf), "%ld", 2784 MainEnvelope.e_msgsize); 2785 macdefine(&MainEnvelope.e_macro, A_TEMP, 2786 macid("{msg_size}"), buf); 2787 2788 Errors = savederrors; 2789 MainEnvelope.e_flags |= savedflags; 2790 } 2791 errno = 0; 2792 2793 if (tTd(1, 1)) 2794 sm_dprintf("From person = \"%s\"\n", 2795 MainEnvelope.e_from.q_paddr); 2796 2797 /* Check if quarantining stats should be updated */ 2798 if (MainEnvelope.e_quarmsg != NULL) 2799 markstats(&MainEnvelope, NULL, STATS_QUARANTINE); 2800 2801 /* 2802 ** Actually send everything. 2803 ** If verifying, just ack. 2804 */ 2805 2806 if (Errors == 0) 2807 { 2808 if (!split_by_recipient(&MainEnvelope) && 2809 bitset(EF_FATALERRS, MainEnvelope.e_flags)) 2810 goto giveup; 2811 } 2812 2813 /* make sure we deliver at least the first envelope */ 2814 i = FastSplit > 0 ? 0 : -1; 2815 for (e = &MainEnvelope; e != NULL; e = e->e_sibling, i++) 2816 { 2817 ENVELOPE *next; 2818 2819 e->e_from.q_state = QS_SENDER; 2820 if (tTd(1, 5)) 2821 { 2822 sm_dprintf("main[%d]: QS_SENDER ", i); 2823 printaddr(sm_debug_file(), &e->e_from, false); 2824 } 2825 e->e_to = NULL; 2826 sm_getla(); 2827 GrabTo = false; 2828#if NAMED_BIND 2829 _res.retry = TimeOuts.res_retry[RES_TO_FIRST]; 2830 _res.retrans = TimeOuts.res_retrans[RES_TO_FIRST]; 2831#endif /* NAMED_BIND */ 2832 next = e->e_sibling; 2833 e->e_sibling = NULL; 2834 2835 /* after FastSplit envelopes: queue up */ 2836 sendall(e, i >= FastSplit ? SM_QUEUE : SM_DEFAULT); 2837 e->e_sibling = next; 2838 } 2839 2840 /* 2841 ** All done. 2842 ** Don't send return error message if in VERIFY mode. 2843 */ 2844 2845 finis(true, true, ExitStat); 2846 /* NOTREACHED */ 2847 return ExitStat; 2848} 2849/* 2850** STOP_SENDMAIL -- Stop the running program 2851** 2852** Parameters: 2853** none. 2854** 2855** Returns: 2856** none. 2857** 2858** Side Effects: 2859** exits. 2860*/ 2861 2862void 2863stop_sendmail() 2864{ 2865 /* reset uid for process accounting */ 2866 endpwent(); 2867 (void) setuid(RealUid); 2868 exit(EX_OK); 2869} 2870/* 2871** FINIS -- Clean up and exit. 2872** 2873** Parameters: 2874** drop -- whether or not to drop CurEnv envelope 2875** cleanup -- call exit() or _exit()? 2876** exitstat -- exit status to use for exit() call 2877** 2878** Returns: 2879** never 2880** 2881** Side Effects: 2882** exits sendmail 2883*/ 2884 2885void 2886finis(drop, cleanup, exitstat) 2887 bool drop; 2888 bool cleanup; 2889 volatile int exitstat; 2890{ 2891 char pidpath[MAXPATHLEN]; 2892 pid_t pid; 2893 2894 /* Still want to process new timeouts added below */ 2895 sm_clear_events(); 2896 (void) sm_releasesignal(SIGALRM); 2897 2898 if (tTd(2, 1)) 2899 { 2900 sm_dprintf("\n====finis: stat %d e_id=%s e_flags=", 2901 exitstat, 2902 CurEnv->e_id == NULL ? "NOQUEUE" : CurEnv->e_id); 2903 printenvflags(CurEnv); 2904 } 2905 if (tTd(2, 9)) 2906 printopenfds(false); 2907 2908 SM_TRY 2909 /* 2910 ** Clean up. This might raise E:mta.quickabort 2911 */ 2912 2913 /* clean up temp files */ 2914 CurEnv->e_to = NULL; 2915 if (drop) 2916 { 2917 if (CurEnv->e_id != NULL) 2918 { 2919 dropenvelope(CurEnv, true, false); 2920 sm_rpool_free(CurEnv->e_rpool); 2921 CurEnv->e_rpool = NULL; 2922 2923 /* these may have pointed to the rpool */ 2924 CurEnv->e_to = NULL; 2925 CurEnv->e_message = NULL; 2926 CurEnv->e_statmsg = NULL; 2927 CurEnv->e_quarmsg = NULL; 2928 CurEnv->e_bodytype = NULL; 2929 CurEnv->e_id = NULL; 2930 CurEnv->e_envid = NULL; 2931 CurEnv->e_auth_param = NULL; 2932 } 2933 else 2934 poststats(StatFile); 2935 } 2936 2937 /* flush any cached connections */ 2938 mci_flush(true, NULL); 2939 2940 /* close maps belonging to this pid */ 2941 closemaps(false); 2942 2943#if USERDB 2944 /* close UserDatabase */ 2945 _udbx_close(); 2946#endif /* USERDB */ 2947 2948#if SASL 2949 stop_sasl_client(); 2950#endif /* SASL */ 2951 2952#if XLA 2953 /* clean up extended load average stuff */ 2954 xla_all_end(); 2955#endif /* XLA */ 2956 2957 SM_FINALLY 2958 /* 2959 ** And exit. 2960 */ 2961 2962 if (LogLevel > 78) 2963 sm_syslog(LOG_DEBUG, CurEnv->e_id, "finis, pid=%d", 2964 (int) CurrentPid); 2965 if (exitstat == EX_TEMPFAIL || 2966 CurEnv->e_errormode == EM_BERKNET) 2967 exitstat = EX_OK; 2968 2969 /* XXX clean up queues and related data structures */ 2970 cleanup_queues(); 2971 pid = getpid(); 2972#if SM_CONF_SHM 2973 cleanup_shm(DaemonPid == pid); 2974#endif /* SM_CONF_SHM */ 2975 2976 /* close locked pid file */ 2977 close_sendmail_pid(); 2978 2979 if (DaemonPid == pid || PidFilePid == pid) 2980 { 2981 /* blow away the pid file */ 2982 expand(PidFile, pidpath, sizeof(pidpath), CurEnv); 2983 (void) unlink(pidpath); 2984 } 2985 2986 /* reset uid for process accounting */ 2987 endpwent(); 2988 sm_mbdb_terminate(); 2989#if _FFR_MEMSTAT 2990 (void) sm_memstat_close(); 2991#endif /* _FFR_MEMSTAT */ 2992 (void) setuid(RealUid); 2993#if SM_HEAP_CHECK 2994 /* dump the heap, if we are checking for memory leaks */ 2995 if (sm_debug_active(&SmHeapCheck, 2)) 2996 sm_heap_report(smioout, 2997 sm_debug_level(&SmHeapCheck) - 1); 2998#endif /* SM_HEAP_CHECK */ 2999 if (sm_debug_active(&SmXtrapReport, 1)) 3000 sm_dprintf("xtrap count = %d\n", SmXtrapCount); 3001 if (cleanup) 3002 exit(exitstat); 3003 else 3004 _exit(exitstat); 3005 SM_END_TRY 3006} 3007/* 3008** INTINDEBUG -- signal handler for SIGINT in -bt mode 3009** 3010** Parameters: 3011** sig -- incoming signal. 3012** 3013** Returns: 3014** none. 3015** 3016** Side Effects: 3017** longjmps back to test mode loop. 3018** 3019** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3020** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3021** DOING. 3022*/ 3023 3024/* Type of an exception generated on SIGINT during address test mode. */ 3025static const SM_EXC_TYPE_T EtypeInterrupt = 3026{ 3027 SmExcTypeMagic, 3028 "S:mta.interrupt", 3029 "", 3030 sm_etype_printf, 3031 "interrupt", 3032}; 3033 3034/* ARGSUSED */ 3035static SIGFUNC_DECL 3036intindebug(sig) 3037 int sig; 3038{ 3039 int save_errno = errno; 3040 3041 FIX_SYSV_SIGNAL(sig, intindebug); 3042 errno = save_errno; 3043 CHECK_CRITICAL(sig); 3044 errno = save_errno; 3045 sm_exc_raisenew_x(&EtypeInterrupt); 3046 errno = save_errno; 3047 return SIGFUNC_RETURN; 3048} 3049/* 3050** SIGTERM -- SIGTERM handler for the daemon 3051** 3052** Parameters: 3053** sig -- signal number. 3054** 3055** Returns: 3056** none. 3057** 3058** Side Effects: 3059** Sets ShutdownRequest which will hopefully trigger 3060** the daemon to exit. 3061** 3062** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3063** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3064** DOING. 3065*/ 3066 3067/* ARGSUSED */ 3068static SIGFUNC_DECL 3069sigterm(sig) 3070 int sig; 3071{ 3072 int save_errno = errno; 3073 3074 FIX_SYSV_SIGNAL(sig, sigterm); 3075 ShutdownRequest = "signal"; 3076 errno = save_errno; 3077 return SIGFUNC_RETURN; 3078} 3079/* 3080** SIGHUP -- handle a SIGHUP signal 3081** 3082** Parameters: 3083** sig -- incoming signal. 3084** 3085** Returns: 3086** none. 3087** 3088** Side Effects: 3089** Sets RestartRequest which should cause the daemon 3090** to restart. 3091** 3092** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3093** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3094** DOING. 3095*/ 3096 3097/* ARGSUSED */ 3098static SIGFUNC_DECL 3099sighup(sig) 3100 int sig; 3101{ 3102 int save_errno = errno; 3103 3104 FIX_SYSV_SIGNAL(sig, sighup); 3105 RestartRequest = "signal"; 3106 errno = save_errno; 3107 return SIGFUNC_RETURN; 3108} 3109/* 3110** SIGPIPE -- signal handler for SIGPIPE 3111** 3112** Parameters: 3113** sig -- incoming signal. 3114** 3115** Returns: 3116** none. 3117** 3118** Side Effects: 3119** Sets StopRequest which should cause the mailq/hoststatus 3120** display to stop. 3121** 3122** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3123** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3124** DOING. 3125*/ 3126 3127/* ARGSUSED */ 3128static SIGFUNC_DECL 3129sigpipe(sig) 3130 int sig; 3131{ 3132 int save_errno = errno; 3133 3134 FIX_SYSV_SIGNAL(sig, sigpipe); 3135 StopRequest = true; 3136 errno = save_errno; 3137 return SIGFUNC_RETURN; 3138} 3139/* 3140** INTSIG -- clean up on interrupt 3141** 3142** This just arranges to exit. It pessimizes in that it 3143** may resend a message. 3144** 3145** Parameters: 3146** none. 3147** 3148** Returns: 3149** none. 3150** 3151** Side Effects: 3152** Unlocks the current job. 3153** 3154** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3155** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3156** DOING. 3157** 3158** XXX: More work is needed for this signal handler. 3159*/ 3160 3161/* ARGSUSED */ 3162SIGFUNC_DECL 3163intsig(sig) 3164 int sig; 3165{ 3166 bool drop = false; 3167 int save_errno = errno; 3168 3169 FIX_SYSV_SIGNAL(sig, intsig); 3170 errno = save_errno; 3171 CHECK_CRITICAL(sig); 3172 sm_allsignals(true); 3173 3174 if (sig != 0 && LogLevel > 79) 3175 sm_syslog(LOG_DEBUG, CurEnv->e_id, "interrupt"); 3176 FileName = NULL; 3177 3178 /* Clean-up on aborted stdin message submission */ 3179 if (CurEnv->e_id != NULL && 3180 (OpMode == MD_SMTP || 3181 OpMode == MD_DELIVER || 3182 OpMode == MD_ARPAFTP)) 3183 { 3184 register ADDRESS *q; 3185 3186 /* don't return an error indication */ 3187 CurEnv->e_to = NULL; 3188 CurEnv->e_flags &= ~EF_FATALERRS; 3189 CurEnv->e_flags |= EF_CLRQUEUE; 3190 3191 /* 3192 ** Spin through the addresses and 3193 ** mark them dead to prevent bounces 3194 */ 3195 3196 for (q = CurEnv->e_sendqueue; q != NULL; q = q->q_next) 3197 q->q_state = QS_DONTSEND; 3198 3199 drop = true; 3200 } 3201 else if (OpMode != MD_TEST) 3202 { 3203 unlockqueue(CurEnv); 3204 } 3205 3206 finis(drop, false, EX_OK); 3207 /* NOTREACHED */ 3208} 3209/* 3210** DISCONNECT -- remove our connection with any foreground process 3211** 3212** Parameters: 3213** droplev -- how "deeply" we should drop the line. 3214** 0 -- ignore signals, mail back errors, make sure 3215** output goes to stdout. 3216** 1 -- also, make stdout go to /dev/null. 3217** 2 -- also, disconnect from controlling terminal 3218** (only for daemon mode). 3219** e -- the current envelope. 3220** 3221** Returns: 3222** none 3223** 3224** Side Effects: 3225** Trys to insure that we are immune to vagaries of 3226** the controlling tty. 3227*/ 3228 3229void 3230disconnect(droplev, e) 3231 int droplev; 3232 register ENVELOPE *e; 3233{ 3234 int fd; 3235 3236 if (tTd(52, 1)) 3237 sm_dprintf("disconnect: In %d Out %d, e=%p\n", 3238 sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL), 3239 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL), e); 3240 if (tTd(52, 100)) 3241 { 3242 sm_dprintf("don't\n"); 3243 return; 3244 } 3245 if (LogLevel > 93) 3246 sm_syslog(LOG_DEBUG, e->e_id, 3247 "disconnect level %d", 3248 droplev); 3249 3250 /* be sure we don't get nasty signals */ 3251 (void) sm_signal(SIGINT, SIG_IGN); 3252 (void) sm_signal(SIGQUIT, SIG_IGN); 3253 3254 /* we can't communicate with our caller, so.... */ 3255 HoldErrs = true; 3256 CurEnv->e_errormode = EM_MAIL; 3257 Verbose = 0; 3258 DisConnected = true; 3259 3260 /* all input from /dev/null */ 3261 if (InChannel != smioin) 3262 { 3263 (void) sm_io_close(InChannel, SM_TIME_DEFAULT); 3264 InChannel = smioin; 3265 } 3266 if (sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3267 SM_IO_RDONLY, NULL, smioin) == NULL) 3268 sm_syslog(LOG_ERR, e->e_id, 3269 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3270 SM_PATH_DEVNULL, sm_errstring(errno)); 3271 3272 /* 3273 ** output to the transcript 3274 ** We also compare the fd numbers here since OutChannel 3275 ** might be a layer on top of smioout due to encryption 3276 ** (see sfsasl.c). 3277 */ 3278 3279 if (OutChannel != smioout && 3280 sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL) != 3281 sm_io_getinfo(smioout, SM_IO_WHAT_FD, NULL)) 3282 { 3283 (void) sm_io_close(OutChannel, SM_TIME_DEFAULT); 3284 OutChannel = smioout; 3285 3286#if 0 3287 /* 3288 ** Has smioout been closed? Reopen it. 3289 ** This shouldn't happen anymore, the code is here 3290 ** just as a reminder. 3291 */ 3292 3293 if (smioout->sm_magic == NULL && 3294 sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL, 3295 SM_IO_WRONLY, NULL, smioout) == NULL) 3296 sm_syslog(LOG_ERR, e->e_id, 3297 "disconnect: sm_io_reopen(\"%s\") failed: %s", 3298 SM_PATH_DEVNULL, sm_errstring(errno)); 3299#endif /* 0 */ 3300 } 3301 if (droplev > 0) 3302 { 3303 fd = open(SM_PATH_DEVNULL, O_WRONLY, 0666); 3304 if (fd == -1) 3305 { 3306 sm_syslog(LOG_ERR, e->e_id, 3307 "disconnect: open(\"%s\") failed: %s", 3308 SM_PATH_DEVNULL, sm_errstring(errno)); 3309 } 3310 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 3311 if (fd >= 0) 3312 { 3313 (void) dup2(fd, STDOUT_FILENO); 3314 (void) dup2(fd, STDERR_FILENO); 3315 (void) close(fd); 3316 } 3317 } 3318 3319 /* drop our controlling TTY completely if possible */ 3320 if (droplev > 1) 3321 { 3322 (void) setsid(); 3323 errno = 0; 3324 } 3325 3326#if XDEBUG 3327 checkfd012("disconnect"); 3328#endif /* XDEBUG */ 3329 3330 if (LogLevel > 71) 3331 sm_syslog(LOG_DEBUG, e->e_id, "in background, pid=%d", 3332 (int) CurrentPid); 3333 3334 errno = 0; 3335} 3336 3337static void 3338obsolete(argv) 3339 char *argv[]; 3340{ 3341 register char *ap; 3342 register char *op; 3343 3344 while ((ap = *++argv) != NULL) 3345 { 3346 /* Return if "--" or not an option of any form. */ 3347 if (ap[0] != '-' || ap[1] == '-') 3348 return; 3349 3350 /* Don't allow users to use "-Q." or "-Q ." */ 3351 if ((ap[1] == 'Q' && ap[2] == '.') || 3352 (ap[1] == 'Q' && argv[1] != NULL && 3353 argv[1][0] == '.' && argv[1][1] == '\0')) 3354 { 3355 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 3356 "Can not use -Q.\n"); 3357 exit(EX_USAGE); 3358 } 3359 3360 /* skip over options that do have a value */ 3361 op = strchr(OPTIONS, ap[1]); 3362 if (op != NULL && *++op == ':' && ap[2] == '\0' && 3363 ap[1] != 'd' && 3364#if defined(sony_news) 3365 ap[1] != 'E' && ap[1] != 'J' && 3366#endif /* defined(sony_news) */ 3367 argv[1] != NULL && argv[1][0] != '-') 3368 { 3369 argv++; 3370 continue; 3371 } 3372 3373 /* If -C doesn't have an argument, use sendmail.cf. */ 3374#define __DEFPATH "sendmail.cf" 3375 if (ap[1] == 'C' && ap[2] == '\0') 3376 { 3377 *argv = xalloc(sizeof(__DEFPATH) + 2); 3378 (void) sm_strlcpyn(argv[0], sizeof(__DEFPATH) + 2, 2, 3379 "-C", __DEFPATH); 3380 } 3381 3382 /* If -q doesn't have an argument, run it once. */ 3383 if (ap[1] == 'q' && ap[2] == '\0') 3384 *argv = "-q0"; 3385 3386 /* If -Q doesn't have an argument, disable quarantining */ 3387 if (ap[1] == 'Q' && ap[2] == '\0') 3388 *argv = "-Q."; 3389 3390 /* if -d doesn't have an argument, use 0-99.1 */ 3391 if (ap[1] == 'd' && ap[2] == '\0') 3392 *argv = "-d0-99.1"; 3393 3394#if defined(sony_news) 3395 /* if -E doesn't have an argument, use -EC */ 3396 if (ap[1] == 'E' && ap[2] == '\0') 3397 *argv = "-EC"; 3398 3399 /* if -J doesn't have an argument, use -JJ */ 3400 if (ap[1] == 'J' && ap[2] == '\0') 3401 *argv = "-JJ"; 3402#endif /* defined(sony_news) */ 3403 } 3404} 3405/* 3406** AUTH_WARNING -- specify authorization warning 3407** 3408** Parameters: 3409** e -- the current envelope. 3410** msg -- the text of the message. 3411** args -- arguments to the message. 3412** 3413** Returns: 3414** none. 3415*/ 3416 3417void 3418#ifdef __STDC__ 3419auth_warning(register ENVELOPE *e, const char *msg, ...) 3420#else /* __STDC__ */ 3421auth_warning(e, msg, va_alist) 3422 register ENVELOPE *e; 3423 const char *msg; 3424 va_dcl 3425#endif /* __STDC__ */ 3426{ 3427 char buf[MAXLINE]; 3428 SM_VA_LOCAL_DECL 3429 3430 if (bitset(PRIV_AUTHWARNINGS, PrivacyFlags)) 3431 { 3432 register char *p; 3433 static char hostbuf[48]; 3434 3435 if (hostbuf[0] == '\0') 3436 { 3437 struct hostent *hp; 3438 3439 hp = myhostname(hostbuf, sizeof(hostbuf)); 3440#if NETINET6 3441 if (hp != NULL) 3442 { 3443 freehostent(hp); 3444 hp = NULL; 3445 } 3446#endif /* NETINET6 */ 3447 } 3448 3449 (void) sm_strlcpyn(buf, sizeof(buf), 2, hostbuf, ": "); 3450 p = &buf[strlen(buf)]; 3451 SM_VA_START(ap, msg); 3452 (void) sm_vsnprintf(p, SPACELEFT(buf, p), msg, ap); 3453 SM_VA_END(ap); 3454 addheader("X-Authentication-Warning", buf, 0, e, true); 3455 if (LogLevel > 3) 3456 sm_syslog(LOG_INFO, e->e_id, 3457 "Authentication-Warning: %.400s", 3458 buf); 3459 } 3460} 3461/* 3462** GETEXTENV -- get from external environment 3463** 3464** Parameters: 3465** envar -- the name of the variable to retrieve 3466** 3467** Returns: 3468** The value, if any. 3469*/ 3470 3471static char * 3472getextenv(envar) 3473 const char *envar; 3474{ 3475 char **envp; 3476 int l; 3477 3478 l = strlen(envar); 3479 for (envp = ExternalEnviron; envp != NULL && *envp != NULL; envp++) 3480 { 3481 if (strncmp(*envp, envar, l) == 0 && (*envp)[l] == '=') 3482 return &(*envp)[l + 1]; 3483 } 3484 return NULL; 3485} 3486/* 3487** SM_SETUSERENV -- set an environment variable in the propagated environment 3488** 3489** Parameters: 3490** envar -- the name of the environment variable. 3491** value -- the value to which it should be set. If 3492** null, this is extracted from the incoming 3493** environment. If that is not set, the call 3494** to sm_setuserenv is ignored. 3495** 3496** Returns: 3497** none. 3498*/ 3499 3500void 3501sm_setuserenv(envar, value) 3502 const char *envar; 3503 const char *value; 3504{ 3505 int i, l; 3506 char **evp = UserEnviron; 3507 char *p; 3508 3509 if (value == NULL) 3510 { 3511 value = getextenv(envar); 3512 if (value == NULL) 3513 return; 3514 } 3515 3516 /* XXX enforce reasonable size? */ 3517 i = strlen(envar) + 1; 3518 l = strlen(value) + i + 1; 3519 p = (char *) xalloc(l); 3520 (void) sm_strlcpyn(p, l, 3, envar, "=", value); 3521 3522 while (*evp != NULL && strncmp(*evp, p, i) != 0) 3523 evp++; 3524 if (*evp != NULL) 3525 { 3526 *evp++ = p; 3527 } 3528 else if (evp < &UserEnviron[MAXUSERENVIRON]) 3529 { 3530 *evp++ = p; 3531 *evp = NULL; 3532 } 3533 3534 /* make sure it is in our environment as well */ 3535 if (putenv(p) < 0) 3536 syserr("sm_setuserenv: putenv(%s) failed", p); 3537} 3538/* 3539** DUMPSTATE -- dump state 3540** 3541** For debugging. 3542*/ 3543 3544void 3545dumpstate(when) 3546 char *when; 3547{ 3548 register char *j = macvalue('j', CurEnv); 3549 int rs; 3550 extern int NextMacroId; 3551 3552 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3553 "--- dumping state on %s: $j = %s ---", 3554 when, 3555 j == NULL ? "<NULL>" : j); 3556 if (j != NULL) 3557 { 3558 if (!wordinclass(j, 'w')) 3559 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3560 "*** $j not in $=w ***"); 3561 } 3562 sm_syslog(LOG_DEBUG, CurEnv->e_id, "CurChildren = %d", CurChildren); 3563 sm_syslog(LOG_DEBUG, CurEnv->e_id, "NextMacroId = %d (Max %d)", 3564 NextMacroId, MAXMACROID); 3565 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- open file descriptors: ---"); 3566 printopenfds(true); 3567 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- connection cache: ---"); 3568 mci_dump_all(smioout, true); 3569 rs = strtorwset("debug_dumpstate", NULL, ST_FIND); 3570 if (rs > 0) 3571 { 3572 int status; 3573 register char **pvp; 3574 char *pv[MAXATOM + 1]; 3575 3576 pv[0] = NULL; 3577 status = REWRITE(pv, rs, CurEnv); 3578 sm_syslog(LOG_DEBUG, CurEnv->e_id, 3579 "--- ruleset debug_dumpstate returns stat %d, pv: ---", 3580 status); 3581 for (pvp = pv; *pvp != NULL; pvp++) 3582 sm_syslog(LOG_DEBUG, CurEnv->e_id, "%s", *pvp); 3583 } 3584 sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- end of state dump ---"); 3585} 3586 3587#ifdef SIGUSR1 3588/* 3589** SIGUSR1 -- Signal a request to dump state. 3590** 3591** Parameters: 3592** sig -- calling signal. 3593** 3594** Returns: 3595** none. 3596** 3597** NOTE: THIS CAN BE CALLED FROM A SIGNAL HANDLER. DO NOT ADD 3598** ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE 3599** DOING. 3600** 3601** XXX: More work is needed for this signal handler. 3602*/ 3603 3604/* ARGSUSED */ 3605static SIGFUNC_DECL 3606sigusr1(sig) 3607 int sig; 3608{ 3609 int save_errno = errno; 3610 3611 FIX_SYSV_SIGNAL(sig, sigusr1); 3612 errno = save_errno; 3613 CHECK_CRITICAL(sig); 3614 dumpstate("user signal"); 3615# if SM_HEAP_CHECK 3616 dumpstab(); 3617# endif /* SM_HEAP_CHECK */ 3618 errno = save_errno; 3619 return SIGFUNC_RETURN; 3620} 3621#endif /* SIGUSR1 */ 3622 3623/* 3624** DROP_PRIVILEGES -- reduce privileges to those of the RunAsUser option 3625** 3626** Parameters: 3627** to_real_uid -- if set, drop to the real uid instead 3628** of the RunAsUser. 3629** 3630** Returns: 3631** EX_OSERR if the setuid failed. 3632** EX_OK otherwise. 3633*/ 3634 3635int 3636drop_privileges(to_real_uid) 3637 bool to_real_uid; 3638{ 3639 int rval = EX_OK; 3640 GIDSET_T emptygidset[1]; 3641 3642 if (tTd(47, 1)) 3643 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", 3644 (int) to_real_uid, 3645 (int) RealUid, (int) RealGid, 3646 (int) getuid(), (int) getgid(), 3647 (int) geteuid(), (int) getegid(), 3648 (int) RunAsUid, (int) RunAsGid); 3649 3650 if (to_real_uid) 3651 { 3652 RunAsUserName = RealUserName; 3653 RunAsUid = RealUid; 3654 RunAsGid = RealGid; 3655 EffGid = RunAsGid; 3656 } 3657 3658 /* make sure no one can grab open descriptors for secret files */ 3659 endpwent(); 3660 sm_mbdb_terminate(); 3661 3662 /* reset group permissions; these can be set later */ 3663 emptygidset[0] = (to_real_uid || RunAsGid != 0) ? RunAsGid : getegid(); 3664 3665 /* 3666 ** Notice: on some OS (Linux...) the setgroups() call causes 3667 ** a logfile entry if sendmail is not run by root. 3668 ** However, it is unclear (no POSIX standard) whether 3669 ** setgroups() can only succeed if executed by root. 3670 ** So for now we keep it as it is; if you want to change it, use 3671 ** if (geteuid() == 0 && setgroups(1, emptygidset) == -1) 3672 */ 3673 3674 if (setgroups(1, emptygidset) == -1 && geteuid() == 0) 3675 { 3676 syserr("drop_privileges: setgroups(1, %d) failed", 3677 (int) emptygidset[0]); 3678 rval = EX_OSERR; 3679 } 3680 3681 /* reset primary group id */ 3682 if (to_real_uid) 3683 { 3684 /* 3685 ** Drop gid to real gid. 3686 ** On some OS we must reset the effective[/real[/saved]] gid, 3687 ** and then use setgid() to finally drop all group privileges. 3688 ** Later on we check whether we can get back the 3689 ** effective gid. 3690 */ 3691 3692#if HASSETEGID 3693 if (setegid(RunAsGid) < 0) 3694 { 3695 syserr("drop_privileges: setegid(%d) failed", 3696 (int) RunAsGid); 3697 rval = EX_OSERR; 3698 } 3699#else /* HASSETEGID */ 3700# if HASSETREGID 3701 if (setregid(RunAsGid, RunAsGid) < 0) 3702 { 3703 syserr("drop_privileges: setregid(%d, %d) failed", 3704 (int) RunAsGid, (int) RunAsGid); 3705 rval = EX_OSERR; 3706 } 3707# else /* HASSETREGID */ 3708# if HASSETRESGID 3709 if (setresgid(RunAsGid, RunAsGid, RunAsGid) < 0) 3710 { 3711 syserr("drop_privileges: setresgid(%d, %d, %d) failed", 3712 (int) RunAsGid, (int) RunAsGid, (int) RunAsGid); 3713 rval = EX_OSERR; 3714 } 3715# endif /* HASSETRESGID */ 3716# endif /* HASSETREGID */ 3717#endif /* HASSETEGID */ 3718 } 3719 if (rval == EX_OK && (to_real_uid || RunAsGid != 0)) 3720 { 3721 if (setgid(RunAsGid) < 0 && (!UseMSP || getegid() != RunAsGid)) 3722 { 3723 syserr("drop_privileges: setgid(%d) failed", 3724 (int) RunAsGid); 3725 rval = EX_OSERR; 3726 } 3727 errno = 0; 3728 if (rval == EX_OK && getegid() != RunAsGid) 3729 { 3730 syserr("drop_privileges: Unable to set effective gid=%d to RunAsGid=%d", 3731 (int) getegid(), (int) RunAsGid); 3732 rval = EX_OSERR; 3733 } 3734 } 3735 3736 /* fiddle with uid */ 3737 if (to_real_uid || RunAsUid != 0) 3738 { 3739 uid_t euid; 3740 3741 /* 3742 ** Try to setuid(RunAsUid). 3743 ** euid must be RunAsUid, 3744 ** ruid must be RunAsUid unless (e|r)uid wasn't 0 3745 ** and we didn't have to drop privileges to the real uid. 3746 */ 3747 3748 if (setuid(RunAsUid) < 0 || 3749 geteuid() != RunAsUid || 3750 (getuid() != RunAsUid && 3751 (to_real_uid || geteuid() == 0 || getuid() == 0))) 3752 { 3753#if HASSETREUID 3754 /* 3755 ** if ruid != RunAsUid, euid == RunAsUid, then 3756 ** try resetting just the real uid, then using 3757 ** setuid() to drop the saved-uid as well. 3758 */ 3759 3760 if (geteuid() == RunAsUid) 3761 { 3762 if (setreuid(RunAsUid, -1) < 0) 3763 { 3764 syserr("drop_privileges: setreuid(%d, -1) failed", 3765 (int) RunAsUid); 3766 rval = EX_OSERR; 3767 } 3768 if (setuid(RunAsUid) < 0) 3769 { 3770 syserr("drop_privileges: second setuid(%d) attempt failed", 3771 (int) RunAsUid); 3772 rval = EX_OSERR; 3773 } 3774 } 3775 else 3776#endif /* HASSETREUID */ 3777 { 3778 syserr("drop_privileges: setuid(%d) failed", 3779 (int) RunAsUid); 3780 rval = EX_OSERR; 3781 } 3782 } 3783 euid = geteuid(); 3784 if (RunAsUid != 0 && setuid(0) == 0) 3785 { 3786 /* 3787 ** Believe it or not, the Linux capability model 3788 ** allows a non-root process to override setuid() 3789 ** on a process running as root and prevent that 3790 ** process from dropping privileges. 3791 */ 3792 3793 syserr("drop_privileges: setuid(0) succeeded (when it should not)"); 3794 rval = EX_OSERR; 3795 } 3796 else if (RunAsUid != euid && setuid(euid) == 0) 3797 { 3798 /* 3799 ** Some operating systems will keep the saved-uid 3800 ** if a non-root effective-uid calls setuid(real-uid) 3801 ** making it possible to set it back again later. 3802 */ 3803 3804 syserr("drop_privileges: Unable to drop non-root set-user-ID privileges"); 3805 rval = EX_OSERR; 3806 } 3807 } 3808 3809 if ((to_real_uid || RunAsGid != 0) && 3810 rval == EX_OK && RunAsGid != EffGid && 3811 getuid() != 0 && geteuid() != 0) 3812 { 3813 errno = 0; 3814 if (setgid(EffGid) == 0) 3815 { 3816 syserr("drop_privileges: setgid(%d) succeeded (when it should not)", 3817 (int) EffGid); 3818 rval = EX_OSERR; 3819 } 3820 } 3821 3822 if (tTd(47, 5)) 3823 { 3824 sm_dprintf("drop_privileges: e/ruid = %d/%d e/rgid = %d/%d\n", 3825 (int) geteuid(), (int) getuid(), 3826 (int) getegid(), (int) getgid()); 3827 sm_dprintf("drop_privileges: RunAsUser = %d:%d\n", 3828 (int) RunAsUid, (int) RunAsGid); 3829 if (tTd(47, 10)) 3830 sm_dprintf("drop_privileges: rval = %d\n", rval); 3831 } 3832 return rval; 3833} 3834/* 3835** FILL_FD -- make sure a file descriptor has been properly allocated 3836** 3837** Used to make sure that stdin/out/err are allocated on startup 3838** 3839** Parameters: 3840** fd -- the file descriptor to be filled. 3841** where -- a string used for logging. If NULL, this is 3842** being called on startup, and logging should 3843** not be done. 3844** 3845** Returns: 3846** none 3847** 3848** Side Effects: 3849** possibly changes MissingFds 3850*/ 3851 3852void 3853fill_fd(fd, where) 3854 int fd; 3855 char *where; 3856{ 3857 int i; 3858 struct stat stbuf; 3859 3860 if (fstat(fd, &stbuf) >= 0 || errno != EBADF) 3861 return; 3862 3863 if (where != NULL) 3864 syserr("fill_fd: %s: fd %d not open", where, fd); 3865 else 3866 MissingFds |= 1 << fd; 3867 i = open(SM_PATH_DEVNULL, fd == 0 ? O_RDONLY : O_WRONLY, 0666); 3868 if (i < 0) 3869 { 3870 syserr("!fill_fd: %s: cannot open %s", 3871 where == NULL ? "startup" : where, SM_PATH_DEVNULL); 3872 } 3873 if (fd != i) 3874 { 3875 (void) dup2(i, fd); 3876 (void) close(i); 3877 } 3878} 3879/* 3880** SM_PRINTOPTIONS -- print options 3881** 3882** Parameters: 3883** options -- array of options. 3884** 3885** Returns: 3886** none. 3887*/ 3888 3889static void 3890sm_printoptions(options) 3891 char **options; 3892{ 3893 int ll; 3894 char **av; 3895 3896 av = options; 3897 ll = 7; 3898 while (*av != NULL) 3899 { 3900 if (ll + strlen(*av) > 63) 3901 { 3902 sm_dprintf("\n"); 3903 ll = 0; 3904 } 3905 if (ll == 0) 3906 sm_dprintf("\t\t"); 3907 else 3908 sm_dprintf(" "); 3909 sm_dprintf("%s", *av); 3910 ll += strlen(*av++) + 1; 3911 } 3912 sm_dprintf("\n"); 3913} 3914 3915/* 3916** TO8BIT -- convert \octal sequences in a test mode input line 3917** 3918** Parameters: 3919** str -- the input line. 3920** 3921** Returns: 3922** none. 3923** 3924** Side Effects: 3925** replaces \0octal in str with octal value. 3926*/ 3927 3928static bool to8bit __P((char *)); 3929 3930static bool 3931to8bit(str) 3932 char *str; 3933{ 3934 int c, len; 3935 char *out, *in; 3936 bool changed; 3937 3938 if (str == NULL) 3939 return false; 3940 in = out = str; 3941 changed = false; 3942 len = 0; 3943 while ((c = (*str++ & 0377)) != '\0') 3944 { 3945 int oct, nxtc; 3946 3947 ++len; 3948 if (c == '\\' && 3949 (nxtc = (*str & 0377)) == '0') 3950 { 3951 oct = 0; 3952 while ((nxtc = (*str & 0377)) != '\0' && 3953 isascii(nxtc) && isdigit(nxtc)) 3954 { 3955 oct <<= 3; 3956 oct += nxtc - '0'; 3957 ++str; 3958 ++len; 3959 } 3960 changed = true; 3961 c = oct; 3962 } 3963 *out++ = c; 3964 } 3965 *out++ = c; 3966 if (changed) 3967 { 3968 char *q; 3969 3970 q = quote_internal_chars(in, in, &len); 3971 if (q != in) 3972 sm_strlcpy(in, q, len); 3973 } 3974 return changed; 3975} 3976 3977/* 3978** TESTMODELINE -- process a test mode input line 3979** 3980** Parameters: 3981** line -- the input line. 3982** e -- the current environment. 3983** Syntax: 3984** # a comment 3985** .X process X as a configuration line 3986** =X dump a configuration item (such as mailers) 3987** $X dump a macro or class 3988** /X try an activity 3989** X normal process through rule set X 3990*/ 3991 3992static void 3993testmodeline(line, e) 3994 char *line; 3995 ENVELOPE *e; 3996{ 3997 register char *p; 3998 char *q; 3999 auto char *delimptr; 4000 int mid; 4001 int i, rs; 4002 STAB *map; 4003 char **s; 4004 struct rewrite *rw; 4005 ADDRESS a; 4006 char *lbp; 4007 auto int lbs; 4008 static int tryflags = RF_COPYNONE; 4009 char exbuf[MAXLINE]; 4010 char lbuf[MAXLINE]; 4011 extern unsigned char TokTypeNoC[]; 4012 bool eightbit; 4013 4014 /* skip leading spaces */ 4015 while (*line == ' ') 4016 line++; 4017 4018 lbp = NULL; 4019 eightbit = false; 4020 switch (line[0]) 4021 { 4022 case '#': 4023 case '\0': 4024 return; 4025 4026 case '?': 4027 help("-bt", e); 4028 return; 4029 4030 case '.': /* config-style settings */ 4031 switch (line[1]) 4032 { 4033 case 'D': 4034 mid = macid_parse(&line[2], &delimptr); 4035 if (mid == 0) 4036 return; 4037 lbs = sizeof(lbuf); 4038 lbp = translate_dollars(delimptr, lbuf, &lbs); 4039 macdefine(&e->e_macro, A_TEMP, mid, lbp); 4040 if (lbp != lbuf) 4041 SM_FREE(lbp); 4042 break; 4043 4044 case 'C': 4045 if (line[2] == '\0') /* not to call syserr() */ 4046 return; 4047 4048 mid = macid_parse(&line[2], &delimptr); 4049 if (mid == 0) 4050 return; 4051 lbs = sizeof(lbuf); 4052 lbp = translate_dollars(delimptr, lbuf, &lbs); 4053 expand(lbp, exbuf, sizeof(exbuf), e); 4054 if (lbp != lbuf) 4055 SM_FREE(lbp); 4056 p = exbuf; 4057 while (*p != '\0') 4058 { 4059 register char *wd; 4060 char delim; 4061 4062 while (*p != '\0' && isascii(*p) && isspace(*p)) 4063 p++; 4064 wd = p; 4065 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 4066 p++; 4067 delim = *p; 4068 *p = '\0'; 4069 if (wd[0] != '\0') 4070 setclass(mid, wd); 4071 *p = delim; 4072 } 4073 break; 4074 4075 case '\0': 4076 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4077 "Usage: .[DC]macro value(s)\n"); 4078 break; 4079 4080 default: 4081 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4082 "Unknown \".\" command %s\n", line); 4083 break; 4084 } 4085 return; 4086 4087 case '=': /* config-style settings */ 4088 switch (line[1]) 4089 { 4090 case 'S': /* dump rule set */ 4091 rs = strtorwset(&line[2], NULL, ST_FIND); 4092 if (rs < 0) 4093 { 4094 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4095 "Undefined ruleset %s\n", &line[2]); 4096 return; 4097 } 4098 rw = RewriteRules[rs]; 4099 if (rw == NULL) 4100 return; 4101 do 4102 { 4103 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4104 'R'); 4105 s = rw->r_lhs; 4106 while (*s != NULL) 4107 { 4108 xputs(smioout, *s++); 4109 (void) sm_io_putc(smioout, 4110 SM_TIME_DEFAULT, ' '); 4111 } 4112 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4113 '\t'); 4114 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4115 '\t'); 4116 s = rw->r_rhs; 4117 while (*s != NULL) 4118 { 4119 xputs(smioout, *s++); 4120 (void) sm_io_putc(smioout, 4121 SM_TIME_DEFAULT, ' '); 4122 } 4123 (void) sm_io_putc(smioout, SM_TIME_DEFAULT, 4124 '\n'); 4125 } while ((rw = rw->r_next) != NULL); 4126 break; 4127 4128 case 'M': 4129 for (i = 0; i < MAXMAILERS; i++) 4130 { 4131 if (Mailer[i] != NULL) 4132 printmailer(smioout, Mailer[i]); 4133 } 4134 break; 4135 4136 case '\0': 4137 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4138 "Usage: =Sruleset or =M\n"); 4139 break; 4140 4141 default: 4142 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4143 "Unknown \"=\" command %s\n", line); 4144 break; 4145 } 4146 return; 4147 4148 case '-': /* set command-line-like opts */ 4149 switch (line[1]) 4150 { 4151 case 'd': 4152 tTflag(&line[2]); 4153 break; 4154 4155 case '\0': 4156 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4157 "Usage: -d{debug arguments}\n"); 4158 break; 4159 4160 default: 4161 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4162 "Unknown \"-\" command %s\n", line); 4163 break; 4164 } 4165 return; 4166 4167 case '$': 4168 if (line[1] == '=') 4169 { 4170 mid = macid(&line[2]); 4171 if (mid != 0) 4172 stabapply(dump_class, mid); 4173 return; 4174 } 4175 mid = macid(&line[1]); 4176 if (mid == 0) 4177 return; 4178 p = macvalue(mid, e); 4179 if (p == NULL) 4180 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4181 "Undefined\n"); 4182 else 4183 { 4184 xputs(smioout, p); 4185 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4186 "\n"); 4187 } 4188 return; 4189 4190 case '/': /* miscellaneous commands */ 4191 p = &line[strlen(line)]; 4192 while (--p >= line && isascii(*p) && isspace(*p)) 4193 *p = '\0'; 4194 p = strpbrk(line, " \t"); 4195 if (p != NULL) 4196 { 4197 while (isascii(*p) && isspace(*p)) 4198 *p++ = '\0'; 4199 } 4200 else 4201 p = ""; 4202 if (line[1] == '\0') 4203 { 4204 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4205 "Usage: /[canon|map|mx|parse|try|tryflags]\n"); 4206 return; 4207 } 4208 if (sm_strcasecmp(&line[1], "quit") == 0) 4209 { 4210 CurEnv->e_id = NULL; 4211 finis(true, true, ExitStat); 4212 /* NOTREACHED */ 4213 } 4214 if (sm_strcasecmp(&line[1], "mx") == 0) 4215 { 4216#if NAMED_BIND 4217 /* look up MX records */ 4218 int nmx; 4219 auto int rcode; 4220 char *mxhosts[MAXMXHOSTS + 1]; 4221 4222 if (*p == '\0') 4223 { 4224 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4225 "Usage: /mx address\n"); 4226 return; 4227 } 4228 nmx = getmxrr(p, mxhosts, NULL, false, &rcode, true, 4229 NULL); 4230 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4231 "getmxrr(%s) returns %d value(s):\n", 4232 p, nmx); 4233 for (i = 0; i < nmx; i++) 4234 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4235 "\t%s\n", mxhosts[i]); 4236#else /* NAMED_BIND */ 4237 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4238 "No MX code compiled in\n"); 4239#endif /* NAMED_BIND */ 4240 } 4241 else if (sm_strcasecmp(&line[1], "canon") == 0) 4242 { 4243 char host[MAXHOSTNAMELEN]; 4244 4245 if (*p == '\0') 4246 { 4247 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4248 "Usage: /canon address\n"); 4249 return; 4250 } 4251 else if (sm_strlcpy(host, p, sizeof(host)) >= sizeof(host)) 4252 { 4253 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4254 "Name too long\n"); 4255 return; 4256 } 4257 (void) getcanonname(host, sizeof(host), !HasWildcardMX, 4258 NULL); 4259 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4260 "getcanonname(%s) returns %s\n", 4261 p, host); 4262 } 4263 else if (sm_strcasecmp(&line[1], "map") == 0) 4264 { 4265 auto int rcode = EX_OK; 4266 char *av[2]; 4267 4268 if (*p == '\0') 4269 { 4270 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4271 "Usage: /map mapname key\n"); 4272 return; 4273 } 4274 for (q = p; *q != '\0' && !(isascii(*q) && isspace(*q)); q++) 4275 continue; 4276 if (*q == '\0') 4277 { 4278 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4279 "No key specified\n"); 4280 return; 4281 } 4282 *q++ = '\0'; 4283 map = stab(p, ST_MAP, ST_FIND); 4284 if (map == NULL) 4285 { 4286 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4287 "Map named \"%s\" not found\n", p); 4288 return; 4289 } 4290 if (!bitset(MF_OPEN, map->s_map.map_mflags) && 4291 !openmap(&(map->s_map))) 4292 { 4293 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4294 "Map named \"%s\" not open\n", p); 4295 return; 4296 } 4297 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4298 "map_lookup: %s (%s) ", p, q); 4299 av[0] = q; 4300 av[1] = NULL; 4301 p = (*map->s_map.map_class->map_lookup) 4302 (&map->s_map, q, av, &rcode); 4303 if (p == NULL) 4304 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4305 "no match (%d)\n", 4306 rcode); 4307 else 4308 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4309 "returns %s (%d)\n", p, 4310 rcode); 4311 } 4312 else if (sm_strcasecmp(&line[1], "try") == 0) 4313 { 4314 MAILER *m; 4315 STAB *st; 4316 auto int rcode = EX_OK; 4317 4318 q = strpbrk(p, " \t"); 4319 if (q != NULL) 4320 { 4321 while (isascii(*q) && isspace(*q)) 4322 *q++ = '\0'; 4323 } 4324 if (q == NULL || *q == '\0') 4325 { 4326 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4327 "Usage: /try mailer address\n"); 4328 return; 4329 } 4330 st = stab(p, ST_MAILER, ST_FIND); 4331 if (st == NULL) 4332 { 4333 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4334 "Unknown mailer %s\n", p); 4335 return; 4336 } 4337 m = st->s_mailer; 4338 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4339 "Trying %s %s address %s for mailer %s\n", 4340 bitset(RF_HEADERADDR, tryflags) ? "header" 4341 : "envelope", 4342 bitset(RF_SENDERADDR, tryflags) ? "sender" 4343 : "recipient", q, p); 4344 p = remotename(q, m, tryflags, &rcode, CurEnv); 4345 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4346 "Rcode = %d, addr = %s\n", 4347 rcode, p == NULL ? "<NULL>" : p); 4348 e->e_to = NULL; 4349 } 4350 else if (sm_strcasecmp(&line[1], "tryflags") == 0) 4351 { 4352 if (*p == '\0') 4353 { 4354 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4355 "Usage: /tryflags [Hh|Ee][Ss|Rr]\n"); 4356 return; 4357 } 4358 for (; *p != '\0'; p++) 4359 { 4360 switch (*p) 4361 { 4362 case 'H': 4363 case 'h': 4364 tryflags |= RF_HEADERADDR; 4365 break; 4366 4367 case 'E': 4368 case 'e': 4369 tryflags &= ~RF_HEADERADDR; 4370 break; 4371 4372 case 'S': 4373 case 's': 4374 tryflags |= RF_SENDERADDR; 4375 break; 4376 4377 case 'R': 4378 case 'r': 4379 tryflags &= ~RF_SENDERADDR; 4380 break; 4381 } 4382 } 4383 exbuf[0] = bitset(RF_HEADERADDR, tryflags) ? 'h' : 'e'; 4384 exbuf[1] = ' '; 4385 exbuf[2] = bitset(RF_SENDERADDR, tryflags) ? 's' : 'r'; 4386 exbuf[3] = '\0'; 4387 macdefine(&e->e_macro, A_TEMP, 4388 macid("{addr_type}"), exbuf); 4389 } 4390 else if (sm_strcasecmp(&line[1], "parse") == 0) 4391 { 4392 if (*p == '\0') 4393 { 4394 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4395 "Usage: /parse address\n"); 4396 return; 4397 } 4398 q = crackaddr(p, e); 4399 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4400 "Cracked address = "); 4401 xputs(smioout, q); 4402 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4403 "\nParsing %s %s address\n", 4404 bitset(RF_HEADERADDR, tryflags) ? 4405 "header" : "envelope", 4406 bitset(RF_SENDERADDR, tryflags) ? 4407 "sender" : "recipient"); 4408 if (parseaddr(p, &a, tryflags, '\0', NULL, e, true) 4409 == NULL) 4410 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4411 "Cannot parse\n"); 4412 else if (a.q_host != NULL && a.q_host[0] != '\0') 4413 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4414 "mailer %s, host %s, user %s\n", 4415 a.q_mailer->m_name, 4416 a.q_host, 4417 a.q_user); 4418 else 4419 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4420 "mailer %s, user %s\n", 4421 a.q_mailer->m_name, 4422 a.q_user); 4423 e->e_to = NULL; 4424 } 4425 else if (sm_strcasecmp(&line[1], "header") == 0) 4426 { 4427 unsigned long ul; 4428 4429 ul = chompheader(p, CHHDR_CHECK|CHHDR_USER, NULL, e); 4430 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4431 "ul = %lu\n", ul); 4432 } 4433 else 4434 { 4435 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4436 "Unknown \"/\" command %s\n", 4437 line); 4438 } 4439 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 4440 return; 4441 } 4442 4443 for (p = line; isascii(*p) && isspace(*p); p++) 4444 continue; 4445 q = p; 4446 while (*p != '\0' && !(isascii(*p) && isspace(*p))) 4447 p++; 4448 if (*p == '\0') 4449 { 4450 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4451 "No address!\n"); 4452 return; 4453 } 4454 *p = '\0'; 4455 if (tTd(23, 101)) 4456 eightbit = to8bit(p + 1); 4457 if (invalidaddr(p + 1, NULL, true)) 4458 return; 4459 do 4460 { 4461 register char **pvp; 4462 char pvpbuf[PSBUFSIZE]; 4463 4464 pvp = prescan(++p, ',', pvpbuf, sizeof(pvpbuf), &delimptr, 4465 ConfigLevel >= 9 ? TokTypeNoC : ExtTokenTab, false); 4466 if (pvp == NULL) 4467 continue; 4468 p = q; 4469 while (*p != '\0') 4470 { 4471 int status; 4472 4473 rs = strtorwset(p, NULL, ST_FIND); 4474 if (rs < 0) 4475 { 4476 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4477 "Undefined ruleset %s\n", 4478 p); 4479 break; 4480 } 4481 status = REWRITE(pvp, rs, e); 4482 if (status != EX_OK) 4483 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4484 "== Ruleset %s (%d) status %d\n", 4485 p, rs, status); 4486 else if (eightbit) 4487 { 4488 cataddr(pvp, NULL, exbuf, sizeof(exbuf), '\0', 4489 true); 4490 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4491 "cataddr: %s\n", 4492 str2prt(exbuf)); 4493 } 4494 while (*p != '\0' && *p++ != ',') 4495 continue; 4496 } 4497 } while (*(p = delimptr) != '\0'); 4498 (void) sm_io_flush(smioout, SM_TIME_DEFAULT); 4499} 4500 4501static void 4502dump_class(s, id) 4503 register STAB *s; 4504 int id; 4505{ 4506 if (s->s_symtype != ST_CLASS) 4507 return; 4508 if (bitnset(bitidx(id), s->s_class)) 4509 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT, 4510 "%s\n", s->s_name); 4511} 4512 4513/* 4514** An exception type used to create QuickAbort exceptions. 4515** This is my first cut at converting QuickAbort from longjmp to exceptions. 4516** These exceptions have a single integer argument, which is the argument 4517** to longjmp in the original code (either 1 or 2). I don't know the 4518** significance of 1 vs 2: the calls to setjmp don't care. 4519*/ 4520 4521const SM_EXC_TYPE_T EtypeQuickAbort = 4522{ 4523 SmExcTypeMagic, 4524 "E:mta.quickabort", 4525 "i", 4526 sm_etype_printf, 4527 "quick abort %0", 4528}; 4529