contrib/sendmail/src/main.c

   1 /*
   2  * Copyright (c) 1998-2006, 2008, 2009, 2011 Proofpoint, Inc. and its suppliers.
   3  *      All rights reserved.
   4  * Copyright (c) 1983, 1995-1997 Eric P. Allman.  All rights reserved.
   5  * Copyright (c) 1988, 1993
   6  *      The Regents of the University of California.  All rights reserved.
   7  *
   8  * By using this file, you agree to the terms and conditions set
   9  * forth in the LICENSE file which can be found at the top level of
  10  * the sendmail distribution.
  11  *
  12  */
  13
  14 #define _DEFINE
  15 #include <sendmail.h>
  16 #include <sm/sendmail.h>
  17 #include <sm/xtrap.h>
  18 #include <sm/signal.h>
  19
  20 #ifndef lint
  21 SM_UNUSED(static char copyright[]) =
  22 "@(#) Copyright (c) 1998-2013 Proofpoint, Inc. and its suppliers.\n\
  23         All rights reserved.\n\
  24      Copyright (c) 1983, 1995-1997 Eric P. Allman.  All rights reserved.\n\
  25      Copyright (c) 1988, 1993\n\
  26         The Regents of the University of California.  All rights reserved.\n";
  27 #endif /* ! lint */
  28
  29 SM_RCSID("@(#)$Id: main.c,v 8.988 2013-11-23 02:52:37 gshapiro Exp $")
  30
  31
  32 #if NETINET || NETINET6
  33 # include <arpa/inet.h>
  34 #endif /* NETINET || NETINET6 */
  35
  36 /* for getcfname() */
  37 #include <sendmail/pathnames.h>
  38
  39 static SM_DEBUG_T
  40 DebugNoPRestart = SM_DEBUG_INITIALIZER("no_persistent_restart",
  41         "@(#)$Debug: no_persistent_restart - don't restart, log only $");
  42
  43 static void     dump_class __P((STAB *, int));
  44 static void     obsolete __P((char **));
  45 static void     testmodeline __P((char *, ENVELOPE *));
  46 static char     *getextenv __P((const char *));
  47 static void     sm_printoptions __P((char **));
  48 static SIGFUNC_DECL     intindebug __P((int));
  49 static SIGFUNC_DECL     sighup __P((int));
  50 static SIGFUNC_DECL     sigpipe __P((int));
  51 static SIGFUNC_DECL     sigterm __P((int));
  52 #ifdef SIGUSR1
  53 static SIGFUNC_DECL     sigusr1 __P((int));
  54 #endif /* SIGUSR1 */
  55
  56 /*
  57 **  SENDMAIL -- Post mail to a set of destinations.
  58 **
  59 **      This is the basic mail router.  All user mail programs should
  60 **      call this routine to actually deliver mail.  Sendmail in
  61 **      turn calls a bunch of mail servers that do the real work of
  62 **      delivering the mail.
  63 **
  64 **      Sendmail is driven by settings read in from /etc/mail/sendmail.cf
  65 **      (read by readcf.c).
  66 **
  67 **      Usage:
  68 **              /usr/lib/sendmail [flags] addr ...
  69 **
  70 **              See the associated documentation for details.
  71 **
  72 **      Authors:
  73 **              Eric Allman, UCB/INGRES (until 10/81).
  74 **                           Britton-Lee, Inc., purveyors of fine
  75 **                              database computers (11/81 - 10/88).
  76 **                           International Computer Science Institute
  77 **                              (11/88 - 9/89).
  78 **                           UCB/Mammoth Project (10/89 - 7/95).
  79 **                           InReference, Inc. (8/95 - 1/97).
  80 **                           Sendmail, Inc. (1/98 - 9/13).
  81 **              The support of my employers is gratefully acknowledged.
  82 **                      Few of them (Britton-Lee in particular) have had
  83 **                      anything to gain from my involvement in this project.
  84 **
  85 **              Gregory Neil Shapiro,
  86 **                      Worcester Polytechnic Institute (until 3/98).
  87 **                      Sendmail, Inc. (3/98 - 10/13).
  88 **                      Proofpoint, Inc. (10/13 - present).
  89 **
  90 **              Claus Assmann,
  91 **                      Sendmail, Inc. (12/98 - 10/13).
  92 **                      Proofpoint, Inc. (10/13 - present).
  93 */
  94
  95 char            *FullName;      /* sender's full name */
  96 ENVELOPE        BlankEnvelope;  /* a "blank" envelope */
  97 static ENVELOPE MainEnvelope;   /* the envelope around the basic letter */
  98 ADDRESS         NullAddress =   /* a null address */
  99                 { "", "", NULL, "" };
 100 char            *CommandLineArgs;       /* command line args for pid file */
 101 bool            Warn_Q_option = false;  /* warn about Q option use */
 102 static int      MissingFds = 0; /* bit map of fds missing on startup */
 103 char            *Mbdb = "pw";   /* mailbox database defaults to /etc/passwd */
 104
 105 #ifdef NGROUPS_MAX
 106 GIDSET_T        InitialGidSet[NGROUPS_MAX];
 107 #endif /* NGROUPS_MAX */
 108
 109 #define MAXCONFIGLEVEL  10      /* highest config version level known */
 110
 111 #if SASL
 112 static sasl_callback_t srvcallbacks[] =
 113 {
 114         {       SASL_CB_VERIFYFILE,     (sasl_callback_ft)&safesaslfile,        NULL    },
 115         {       SASL_CB_PROXY_POLICY,   (sasl_callback_ft)&proxy_policy,        NULL    },
 116         {       SASL_CB_LIST_END,       NULL,           NULL    }
 117 };
 118 #endif /* SASL */
 119
 120 unsigned int    SubmitMode;
 121 int             SyslogPrefixLen; /* estimated length of syslog prefix */
 122 #define PIDLEN          6       /* pid length for computing SyslogPrefixLen */
 123 #ifndef SL_FUDGE
 124 # define SL_FUDGE       10      /* fudge offset for SyslogPrefixLen */
 125 #endif /* ! SL_FUDGE */
 126 #define SLDLL           8       /* est. length of default syslog label */
 127
 128
 129 /* Some options are dangerous to allow users to use in non-submit mode */
 130 #define CHECK_AGAINST_OPMODE(cmd)                                       \
 131 {                                                                       \
 132         if (extraprivs &&                                               \
 133             OpMode != MD_DELIVER && OpMode != MD_SMTP &&                \
 134             OpMode != MD_ARPAFTP && OpMode != MD_CHECKCONFIG &&         \
 135             OpMode != MD_VERIFY && OpMode != MD_TEST)                   \
 136         {                                                               \
 137                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,          \
 138                                      "WARNING: Ignoring submission mode -%c option (not in submission mode)\n", \
 139                        (cmd));                                          \
 140                 break;                                                  \
 141         }                                                               \
 142         if (extraprivs && queuerun)                                     \
 143         {                                                               \
 144                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,          \
 145                                      "WARNING: Ignoring submission mode -%c option with -q\n", \
 146                        (cmd));                                          \
 147                 break;                                                  \
 148         }                                                               \
 149 }
 150
 151 int
 152 main(argc, argv, envp)
 153         int argc;
 154         char **argv;
 155         char **envp;
 156 {
 157         register char *p;
 158         char **av;
 159         extern char Version[];
 160         char *ep, *from;
 161         STAB *st;
 162         register int i;
 163         int j;
 164         int dp;
 165         int fill_errno;
 166         int qgrp = NOQGRP;              /* queue group to process */
 167         bool safecf = true;
 168         BITMAP256 *p_flags = NULL;      /* daemon flags */
 169         bool warn_C_flag = false;
 170         bool auth = true;               /* whether to set e_auth_param */
 171         char warn_f_flag = '\0';
 172         bool run_in_foreground = false; /* -bD mode */
 173         bool queuerun = false, debug = false;
 174         struct passwd *pw;
 175         struct hostent *hp;
 176         char *nullserver = NULL;
 177         char *authinfo = NULL;
 178         char *sysloglabel = NULL;       /* label for syslog */
 179         char *conffile = NULL;          /* name of .cf file */
 180         char *queuegroup = NULL;        /* queue group to process */
 181         char *quarantining = NULL;      /* quarantine queue items? */
 182         bool extraprivs;
 183         bool forged, negate;
 184         bool queuepersistent = false;   /* queue runner process runs forever */
 185         bool foregroundqueue = false;   /* queue run in foreground */
 186         bool save_val;                  /* to save some bool var. */
 187         int cftype;                     /* which cf file to use? */
 188         SM_FILE_T *smdebug;
 189         static time_t starttime = 0;    /* when was process started */
 190         struct stat traf_st;            /* for TrafficLog FIFO check */
 191         char buf[MAXLINE];
 192         char jbuf[MAXHOSTNAMELEN];      /* holds MyHostName */
 193         static char rnamebuf[MAXNAME];  /* holds RealUserName */
 194         char *emptyenviron[1];
 195 #if STARTTLS
 196         bool tls_ok;
 197 #endif /* STARTTLS */
 198         QUEUE_CHAR *new;
 199         ENVELOPE *e;
 200         extern int DtableSize;
 201         extern int optind;
 202         extern int opterr;
 203         extern char *optarg;
 204         extern char **environ;
 205 #if SASL
 206         extern void sm_sasl_init __P((void));
 207 #endif /* SASL */
 208
 209 #if USE_ENVIRON
 210         envp = environ;
 211 #endif /* USE_ENVIRON */
 212
 213         /* turn off profiling */
 214         SM_PROF(0);
 215
 216         /* install default exception handler */
 217         sm_exc_newthread(fatal_error);
 218
 219         /* set the default in/out channel so errors reported to screen */
 220         InChannel = smioin;
 221         OutChannel = smioout;
 222
 223         /*
 224         **  Check to see if we reentered.
 225         **      This would normally happen if e_putheader or e_putbody
 226         **      were NULL when invoked.
 227         */
 228
 229         if (starttime != 0)
 230         {
 231                 syserr("main: reentered!");
 232                 abort();
 233         }
 234         starttime = curtime();
 235
 236         /* avoid null pointer dereferences */
 237         TermEscape.te_rv_on = TermEscape.te_under_on = TermEscape.te_normal = "";
 238
 239         RealUid = getuid();
 240         RealGid = getgid();
 241
 242         /* Check if sendmail is running with extra privs */
 243         extraprivs = (RealUid != 0 &&
 244                       (geteuid() != getuid() || getegid() != getgid()));
 245
 246         CurrentPid = getpid();
 247
 248         /* get whatever .cf file is right for the opmode */
 249         cftype = SM_GET_RIGHT_CF;
 250
 251         /* in 4.4BSD, the table can be huge; impose a reasonable limit */
 252         DtableSize = getdtsize();
 253         if (DtableSize > 256)
 254                 DtableSize = 256;
 255
 256         /*
 257         **  Be sure we have enough file descriptors.
 258         **      But also be sure that 0, 1, & 2 are open.
 259         */
 260
 261         /* reset errno and fill_errno; the latter is used way down below */
 262         errno = fill_errno = 0;
 263         fill_fd(STDIN_FILENO, NULL);
 264         if (errno != 0)
 265                 fill_errno = errno;
 266         fill_fd(STDOUT_FILENO, NULL);
 267         if (errno != 0)
 268                 fill_errno = errno;
 269         fill_fd(STDERR_FILENO, NULL);
 270         if (errno != 0)
 271                 fill_errno = errno;
 272
 273         sm_closefrom(STDERR_FILENO + 1, DtableSize);
 274         errno = 0;
 275         smdebug = NULL;
 276
 277 #if LOG
 278 # ifndef SM_LOG_STR
 279 #  define SM_LOG_STR    "sendmail"
 280 # endif /* ! SM_LOG_STR */
 281 #  ifdef LOG_MAIL
 282         openlog(SM_LOG_STR, LOG_PID, LOG_MAIL);
 283 #  else /* LOG_MAIL */
 284         openlog(SM_LOG_STR, LOG_PID);
 285 #  endif /* LOG_MAIL */
 286 #endif /* LOG */
 287
 288         /*
 289         **  Seed the random number generator.
 290         **  Used for queue file names, picking a queue directory, and
 291         **  MX randomization.
 292         */
 293
 294         seed_random();
 295
 296         /* do machine-dependent initializations */
 297         init_md(argc, argv);
 298
 299
 300         SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) + SL_FUDGE + SLDLL;
 301
 302         /* reset status from syserr() calls for missing file descriptors */
 303         Errors = 0;
 304         ExitStat = EX_OK;
 305
 306         SubmitMode = SUBMIT_UNKNOWN;
 307 #if _FFR_LOCAL_DAEMON
 308         LocalDaemon = false;
 309 # if NETINET6
 310         V6LoopbackAddrFound = false;
 311 # endif /* NETINET6 */
 312 #endif /* _FFR_LOCAL_DAEMON */
 313 #if XDEBUG
 314         checkfd012("after openlog");
 315 #endif /* XDEBUG */
 316
 317         tTsetup(tTdvect, sizeof(tTdvect), "0-99.1,*_trace_*.1");
 318
 319 #ifdef NGROUPS_MAX
 320         /* save initial group set for future checks */
 321         i = getgroups(NGROUPS_MAX, InitialGidSet);
 322         if (i <= 0)
 323         {
 324                 InitialGidSet[0] = (GID_T) -1;
 325                 i = 0;
 326         }
 327         while (i < NGROUPS_MAX)
 328                 InitialGidSet[i++] = InitialGidSet[0];
 329 #endif /* NGROUPS_MAX */
 330
 331         /* drop group id privileges (RunAsUser not yet set) */
 332         dp = drop_privileges(false);
 333         setstat(dp);
 334
 335 #ifdef SIGUSR1
 336         /* Only allow root (or non-set-*-ID binaries) to use SIGUSR1 */
 337         if (!extraprivs)
 338         {
 339                 /* arrange to dump state on user-1 signal */
 340                 (void) sm_signal(SIGUSR1, sigusr1);
 341         }
 342         else
 343         {
 344                 /* ignore user-1 signal */
 345                 (void) sm_signal(SIGUSR1, SIG_IGN);
 346         }
 347 #endif /* SIGUSR1 */
 348
 349         /* initialize for setproctitle */
 350         initsetproctitle(argc, argv, envp);
 351
 352         /* Handle any non-getoptable constructions. */
 353         obsolete(argv);
 354
 355         /*
 356         **  Do a quick prescan of the argument list.
 357         */
 358
 359
 360         /* find initial opMode */
 361         OpMode = MD_DELIVER;
 362         av = argv;
 363         p = strrchr(*av, '/');
 364         if (p++ == NULL)
 365                 p = *av;
 366         if (strcmp(p, "newaliases") == 0)
 367                 OpMode = MD_INITALIAS;
 368         else if (strcmp(p, "mailq") == 0)
 369                 OpMode = MD_PRINT;
 370         else if (strcmp(p, "smtpd") == 0)
 371                 OpMode = MD_DAEMON;
 372         else if (strcmp(p, "hoststat") == 0)
 373                 OpMode = MD_HOSTSTAT;
 374         else if (strcmp(p, "purgestat") == 0)
 375                 OpMode = MD_PURGESTAT;
 376
 377 #if defined(__osf__) || defined(_AIX3)
 378 # define OPTIONS        "A:B:b:C:cD:d:e:F:f:Gh:IiL:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:x"
 379 #endif /* defined(__osf__) || defined(_AIX3) */
 380 #if defined(sony_news)
 381 # define OPTIONS        "A:B:b:C:cD:d:E:e:F:f:Gh:IiJ:L:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:"
 382 #endif /* defined(sony_news) */
 383 #ifndef OPTIONS
 384 # define OPTIONS        "A:B:b:C:cD:d:e:F:f:Gh:IiL:M:mN:nO:o:p:Q:q:R:r:sTtV:vX:"
 385 #endif /* ! OPTIONS */
 386
 387         /* Set to 0 to allow -b; need to check optarg before using it! */
 388         opterr = 0;
 389         while ((j = getopt(argc, argv, OPTIONS)) != -1)
 390         {
 391                 switch (j)
 392                 {
 393                   case 'b':     /* operations mode */
 394                         j = (optarg == NULL) ? ' ' : *optarg;
 395                         switch (j)
 396                         {
 397                           case MD_DAEMON:
 398                           case MD_FGDAEMON:
 399                           case MD_SMTP:
 400                           case MD_INITALIAS:
 401                           case MD_DELIVER:
 402                           case MD_VERIFY:
 403                           case MD_TEST:
 404                           case MD_PRINT:
 405                           case MD_PRINTNQE:
 406                           case MD_HOSTSTAT:
 407                           case MD_PURGESTAT:
 408                           case MD_ARPAFTP:
 409                           case MD_CHECKCONFIG:
 410                                 OpMode = j;
 411                                 break;
 412
 413 #if _FFR_LOCAL_DAEMON
 414                           case MD_LOCAL:
 415                                 OpMode = MD_DAEMON;
 416                                 LocalDaemon = true;
 417                                 break;
 418 #endif /* _FFR_LOCAL_DAEMON */
 419
 420                           case MD_FREEZE:
 421                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
 422                                                      "Frozen configurations unsupported\n");
 423                                 return EX_USAGE;
 424
 425                           default:
 426                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
 427                                                      "Invalid operation mode %c\n",
 428                                                      j);
 429                                 return EX_USAGE;
 430                         }
 431                         break;
 432
 433                   case 'D':
 434                         if (debug)
 435                         {
 436                                 errno = 0;
 437                                 syserr("-D file must be before -d");
 438                                 ExitStat = EX_USAGE;
 439                                 break;
 440                         }
 441                         dp = drop_privileges(true);
 442                         setstat(dp);
 443                         smdebug = sm_io_open(SmFtStdio, SM_TIME_DEFAULT,
 444                                             optarg, SM_IO_APPEND, NULL);
 445                         if (smdebug == NULL)
 446                         {
 447                                 syserr("cannot open %s", optarg);
 448                                 ExitStat = EX_CANTCREAT;
 449                                 break;
 450                         }
 451                         sm_debug_setfile(smdebug);
 452                         break;
 453
 454                   case 'd':
 455                         debug = true;
 456                         tTflag(optarg);
 457                         (void) sm_io_setvbuf(sm_debug_file(), SM_TIME_DEFAULT,
 458                                              (char *) NULL, SM_IO_NBF,
 459                                              SM_IO_BUFSIZ);
 460                         break;
 461
 462                   case 'G':     /* relay (gateway) submission */
 463                         SubmitMode = SUBMIT_MTA;
 464                         break;
 465
 466                   case 'L':
 467                         if (optarg == NULL)
 468                         {
 469                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
 470                                                      "option requires an argument -- '%c'",
 471                                                      (char) j);
 472                                 return EX_USAGE;
 473                         }
 474                         j = SM_MIN(strlen(optarg), 32) + 1;
 475                         sysloglabel = xalloc(j);
 476                         (void) sm_strlcpy(sysloglabel, optarg, j);
 477                         SyslogPrefixLen = PIDLEN + (MAXQFNAME - 3) +
 478                                           SL_FUDGE + j;
 479                         break;
 480
 481                   case 'Q':
 482                   case 'q':
 483                         /* just check if it is there */
 484                         queuerun = true;
 485                         break;
 486                 }
 487         }
 488         opterr = 1;
 489
 490         /* Don't leak queue information via debug flags */
 491         if (extraprivs && queuerun && debug)
 492         {
 493                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
 494                                      "WARNING: Can not use -d with -q.  Disabling debugging.\n");
 495                 sm_debug_close();
 496                 sm_debug_setfile(NULL);
 497                 (void) memset(tTdvect, '\0', sizeof(tTdvect));
 498         }
 499
 500 #if LOG
 501         if (sysloglabel != NULL)
 502         {
 503                 /* Sanitize the string */
 504                 for (p = sysloglabel; *p != '\0'; p++)
 505                 {
 506                         if (!isascii(*p) || !isprint(*p) || *p == '%')
 507                                 *p = '*';
 508                 }
 509                 closelog();
 510 #  ifdef LOG_MAIL
 511                 openlog(sysloglabel, LOG_PID, LOG_MAIL);
 512 #  else /* LOG_MAIL */
 513                 openlog(sysloglabel, LOG_PID);
 514 #  endif /* LOG_MAIL */
 515         }
 516 #endif /* LOG */
 517
 518         /* set up the blank envelope */
 519         BlankEnvelope.e_puthdr = putheader;
 520         BlankEnvelope.e_putbody = putbody;
 521         BlankEnvelope.e_xfp = NULL;
 522         STRUCTCOPY(NullAddress, BlankEnvelope.e_from);
 523         CurEnv = &BlankEnvelope;
 524         STRUCTCOPY(NullAddress, MainEnvelope.e_from);
 525
 526         /*
 527         **  Set default values for variables.
 528         **      These cannot be in initialized data space.
 529         */
 530
 531         setdefaults(&BlankEnvelope);
 532         initmacros(&BlankEnvelope);
 533
 534         /* reset macro */
 535         set_op_mode(OpMode);
 536         if (OpMode == MD_DAEMON)
 537                 DaemonPid = CurrentPid; /* needed for finis() to work */
 538
 539         pw = sm_getpwuid(RealUid);
 540         if (pw != NULL)
 541                 (void) sm_strlcpy(rnamebuf, pw->pw_name, sizeof(rnamebuf));
 542         else
 543                 (void) sm_snprintf(rnamebuf, sizeof(rnamebuf), "Unknown UID %d",
 544                                    (int) RealUid);
 545
 546         RealUserName = rnamebuf;
 547
 548         if (tTd(0, 101))
 549         {
 550                 sm_dprintf("Version %s\n", Version);
 551                 finis(false, true, EX_OK);
 552                 /* NOTREACHED */
 553         }
 554
 555         /*
 556         **  if running non-set-user-ID binary as non-root, pretend
 557         **  we are the RunAsUid
 558         */
 559
 560         if (RealUid != 0 && geteuid() == RealUid)
 561         {
 562                 if (tTd(47, 1))
 563                         sm_dprintf("Non-set-user-ID binary: RunAsUid = RealUid = %d\n",
 564                                    (int) RealUid);
 565                 RunAsUid = RealUid;
 566         }
 567         else if (geteuid() != 0)
 568                 RunAsUid = geteuid();
 569
 570         EffGid = getegid();
 571         if (RealUid != 0 && EffGid == RealGid)
 572                 RunAsGid = RealGid;
 573
 574         if (tTd(47, 5))
 575         {
 576                 sm_dprintf("main: e/ruid = %d/%d e/rgid = %d/%d\n",
 577                            (int) geteuid(), (int) getuid(),
 578                            (int) getegid(), (int) getgid());
 579                 sm_dprintf("main: RunAsUser = %d:%d\n",
 580                            (int) RunAsUid, (int) RunAsGid);
 581         }
 582
 583         /* save command line arguments */
 584         j = 0;
 585         for (av = argv; *av != NULL; )
 586                 j += strlen(*av++) + 1;
 587         SaveArgv = (char **) xalloc(sizeof(char *) * (argc + 1));
 588         CommandLineArgs = xalloc(j);
 589         p = CommandLineArgs;
 590         for (av = argv, i = 0; *av != NULL; )
 591         {
 592                 int h;
 593
 594                 SaveArgv[i++] = newstr(*av);
 595                 if (av != argv)
 596                         *p++ = ' ';
 597                 (void) sm_strlcpy(p, *av++, j);
 598                 h = strlen(p);
 599                 p += h;
 600                 j -= h + 1;
 601         }
 602         SaveArgv[i] = NULL;
 603
 604         if (tTd(0, 1))
 605         {
 606                 extern char *CompileOptions[];
 607
 608                 sm_dprintf("Version %s\n Compiled with:", Version);
 609                 sm_printoptions(CompileOptions);
 610         }
 611         if (tTd(0, 10))
 612         {
 613                 extern char *OsCompileOptions[];
 614
 615                 sm_dprintf("    OS Defines:");
 616                 sm_printoptions(OsCompileOptions);
 617 #ifdef _PATH_UNIX
 618                 sm_dprintf("Kernel symbols:\t%s\n", _PATH_UNIX);
 619 #endif /* _PATH_UNIX */
 620
 621                 sm_dprintf("     Conf file:\t%s (default for MSP)\n",
 622                            getcfname(OpMode, SubmitMode, SM_GET_SUBMIT_CF,
 623                                      conffile));
 624                 sm_dprintf("     Conf file:\t%s (default for MTA)\n",
 625                            getcfname(OpMode, SubmitMode, SM_GET_SENDMAIL_CF,
 626                                      conffile));
 627                 sm_dprintf("      Pid file:\t%s (default)\n", PidFile);
 628         }
 629
 630         if (tTd(0, 12))
 631         {
 632                 extern char *SmCompileOptions[];
 633
 634                 sm_dprintf(" libsm Defines:");
 635                 sm_printoptions(SmCompileOptions);
 636         }
 637
 638         if (tTd(0, 13))
 639         {
 640                 extern char *FFRCompileOptions[];
 641
 642                 sm_dprintf("   FFR Defines:");
 643                 sm_printoptions(FFRCompileOptions);
 644         }
 645
 646 #if STARTTLS
 647         if (tTd(0, 14))
 648         {
 649                 /* exit(EX_CONFIG) if different? */
 650                 sm_dprintf("       OpenSSL: compiled 0x%08x\n",
 651                            (uint) OPENSSL_VERSION_NUMBER);
 652                 sm_dprintf("       OpenSSL: linked   0x%08x\n",
 653                            (uint) SSLeay());
 654         }
 655 #endif /* STARTTLS */
 656
 657         /* clear sendmail's environment */
 658         ExternalEnviron = environ;
 659         emptyenviron[0] = NULL;
 660         environ = emptyenviron;
 661
 662         /*
 663         **  restore any original TZ setting until TimeZoneSpec has been
 664         **  determined - or early log messages may get bogus time stamps
 665         */
 666
 667         if ((p = getextenv("TZ")) != NULL)
 668         {
 669                 char *tz;
 670                 int tzlen;
 671
 672                 /* XXX check for reasonable length? */
 673                 tzlen = strlen(p) + 4;
 674                 tz = xalloc(tzlen);
 675                 (void) sm_strlcpyn(tz, tzlen, 2, "TZ=", p);
 676
 677                 /* XXX check return code? */
 678                 (void) putenv(tz);
 679         }
 680
 681         /* prime the child environment */
 682         sm_setuserenv("AGENT", "sendmail");
 683
 684         (void) sm_signal(SIGPIPE, SIG_IGN);
 685         OldUmask = umask(022);
 686         FullName = getextenv("NAME");
 687         if (FullName != NULL)
 688                 FullName = newstr(FullName);
 689
 690         /*
 691         **  Initialize name server if it is going to be used.
 692         */
 693
 694 #if NAMED_BIND
 695         if (!bitset(RES_INIT, _res.options))
 696                 (void) res_init();
 697         if (tTd(8, 8))
 698                 _res.options |= RES_DEBUG;
 699         else
 700                 _res.options &= ~RES_DEBUG;
 701 # ifdef RES_NOALIASES
 702         _res.options |= RES_NOALIASES;
 703 # endif /* RES_NOALIASES */
 704         TimeOuts.res_retry[RES_TO_DEFAULT] = _res.retry;
 705         TimeOuts.res_retry[RES_TO_FIRST] = _res.retry;
 706         TimeOuts.res_retry[RES_TO_NORMAL] = _res.retry;
 707         TimeOuts.res_retrans[RES_TO_DEFAULT] = _res.retrans;
 708         TimeOuts.res_retrans[RES_TO_FIRST] = _res.retrans;
 709         TimeOuts.res_retrans[RES_TO_NORMAL] = _res.retrans;
 710 #endif /* NAMED_BIND */
 711
 712         errno = 0;
 713         from = NULL;
 714
 715         /* initialize some macros, etc. */
 716         init_vendor_macros(&BlankEnvelope);
 717
 718         /* version */
 719         macdefine(&BlankEnvelope.e_macro, A_PERM, 'v', Version);
 720
 721         /* hostname */
 722         hp = myhostname(jbuf, sizeof(jbuf));
 723         if (jbuf[0] != '\0')
 724         {
 725                 struct utsname utsname;
 726
 727                 if (tTd(0, 4))
 728                         sm_dprintf("Canonical name: %s\n", jbuf);
 729                 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'w', jbuf);
 730                 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'j', jbuf);
 731                 setclass('w', jbuf);
 732
 733                 p = strchr(jbuf, '.');
 734                 if (p != NULL && p[1] != '\0')
 735                         macdefine(&BlankEnvelope.e_macro, A_TEMP, 'm', &p[1]);
 736
 737                 if (uname(&utsname) >= 0)
 738                         p = utsname.nodename;
 739                 else
 740                 {
 741                         if (tTd(0, 22))
 742                                 sm_dprintf("uname failed (%s)\n",
 743                                            sm_errstring(errno));
 744                         makelower(jbuf);
 745                         p = jbuf;
 746                 }
 747                 if (tTd(0, 4))
 748                         sm_dprintf(" UUCP nodename: %s\n", p);
 749                 macdefine(&BlankEnvelope.e_macro, A_TEMP, 'k', p);
 750                 setclass('k', p);
 751                 setclass('w', p);
 752         }
 753         if (hp != NULL)
 754         {
 755                 for (av = hp->h_aliases; av != NULL && *av != NULL; av++)
 756                 {
 757                         if (tTd(0, 4))
 758                                 sm_dprintf("\ta.k.a.: %s\n", *av);
 759                         setclass('w', *av);
 760                 }
 761 #if NETINET || NETINET6
 762                 for (i = 0; i >= 0 && hp->h_addr_list[i] != NULL; i++)
 763                 {
 764 # if NETINET6
 765                         char *addr;
 766                         char buf6[INET6_ADDRSTRLEN];
 767                         struct in6_addr ia6;
 768 # endif /* NETINET6 */
 769 # if NETINET
 770                         struct in_addr ia;
 771 # endif /* NETINET */
 772                         char ipbuf[103];
 773
 774                         ipbuf[0] = '\0';
 775                         switch (hp->h_addrtype)
 776                         {
 777 # if NETINET
 778                           case AF_INET:
 779                                 if (hp->h_length != INADDRSZ)
 780                                         break;
 781
 782                                 memmove(&ia, hp->h_addr_list[i], INADDRSZ);
 783                                 (void) sm_snprintf(ipbuf, sizeof(ipbuf),
 784                                                    "[%.100s]", inet_ntoa(ia));
 785                                 break;
 786 # endif /* NETINET */
 787
 788 # if NETINET6
 789                           case AF_INET6:
 790                                 if (hp->h_length != IN6ADDRSZ)
 791                                         break;
 792
 793                                 memmove(&ia6, hp->h_addr_list[i], IN6ADDRSZ);
 794                                 addr = anynet_ntop(&ia6, buf6, sizeof(buf6));
 795                                 if (addr != NULL)
 796                                         (void) sm_snprintf(ipbuf, sizeof(ipbuf),
 797                                                            "[%.100s]", addr);
 798                                 break;
 799 # endif /* NETINET6 */
 800                         }
 801                         if (ipbuf[0] == '\0')
 802                                 break;
 803
 804                         if (tTd(0, 4))
 805                                 sm_dprintf("\ta.k.a.: %s\n", ipbuf);
 806                         setclass('w', ipbuf);
 807                 }
 808 #endif /* NETINET || NETINET6 */
 809 #if NETINET6
 810                 freehostent(hp);
 811                 hp = NULL;
 812 #endif /* NETINET6 */
 813         }
 814
 815         /* current time */
 816         macdefine(&BlankEnvelope.e_macro, A_TEMP, 'b', arpadate((char *) NULL));
 817
 818         /* current load average */
 819         sm_getla();
 820
 821         QueueLimitRecipient = (QUEUE_CHAR *) NULL;
 822         QueueLimitSender = (QUEUE_CHAR *) NULL;
 823         QueueLimitId = (QUEUE_CHAR *) NULL;
 824         QueueLimitQuarantine = (QUEUE_CHAR *) NULL;
 825
 826         /*
 827         **  Crack argv.
 828         */
 829
 830         optind = 1;
 831         while ((j = getopt(argc, argv, OPTIONS)) != -1)
 832         {
 833                 switch (j)
 834                 {
 835                   case 'b':     /* operations mode */
 836                         /* already done */
 837                         break;
 838
 839                   case 'A':     /* use Alternate sendmail/submit.cf */
 840                         cftype = optarg[0] == 'c' ? SM_GET_SUBMIT_CF
 841                                                   : SM_GET_SENDMAIL_CF;
 842                         break;
 843
 844                   case 'B':     /* body type */
 845                         CHECK_AGAINST_OPMODE(j);
 846                         BlankEnvelope.e_bodytype = newstr(optarg);
 847                         break;
 848
 849                   case 'C':     /* select configuration file (already done) */
 850                         if (RealUid != 0)
 851                                 warn_C_flag = true;
 852                         conffile = newstr(optarg);
 853                         dp = drop_privileges(true);
 854                         setstat(dp);
 855                         safecf = false;
 856                         break;
 857
 858                   case 'D':
 859                   case 'd':     /* debugging */
 860                         /* already done */
 861                         break;
 862
 863                   case 'f':     /* from address */
 864                   case 'r':     /* obsolete -f flag */
 865                         CHECK_AGAINST_OPMODE(j);
 866                         if (from != NULL)
 867                         {
 868                                 usrerr("More than one \"from\" person");
 869                                 ExitStat = EX_USAGE;
 870                                 break;
 871                         }
 872                         if (optarg[0] == '\0')
 873                                 from = newstr("<>");
 874                         else
 875                                 from = newstr(denlstring(optarg, true, true));
 876                         if (strcmp(RealUserName, from) != 0)
 877                                 warn_f_flag = j;
 878                         break;
 879
 880                   case 'F':     /* set full name */
 881                         CHECK_AGAINST_OPMODE(j);
 882                         FullName = newstr(optarg);
 883                         break;
 884
 885                   case 'G':     /* relay (gateway) submission */
 886                         /* already set */
 887                         CHECK_AGAINST_OPMODE(j);
 888                         break;
 889
 890                   case 'h':     /* hop count */
 891                         CHECK_AGAINST_OPMODE(j);
 892                         BlankEnvelope.e_hopcount = (short) strtol(optarg, &ep,
 893                                                                   10);
 894                         (void) sm_snprintf(buf, sizeof(buf), "%d",
 895                                            BlankEnvelope.e_hopcount);
 896                         macdefine(&BlankEnvelope.e_macro, A_TEMP, 'c', buf);
 897
 898                         if (*ep)
 899                         {
 900                                 usrerr("Bad hop count (%s)", optarg);
 901                                 ExitStat = EX_USAGE;
 902                         }
 903                         break;
 904
 905                   case 'L':     /* program label */
 906                         /* already set */
 907                         break;
 908
 909                   case 'n':     /* don't alias */
 910                         CHECK_AGAINST_OPMODE(j);
 911                         NoAlias = true;
 912                         break;
 913
 914                   case 'N':     /* delivery status notifications */
 915                         CHECK_AGAINST_OPMODE(j);
 916                         DefaultNotify |= QHASNOTIFY;
 917                         macdefine(&BlankEnvelope.e_macro, A_TEMP,
 918                                 macid("{dsn_notify}"), optarg);
 919                         if (sm_strcasecmp(optarg, "never") == 0)
 920                                 break;
 921                         for (p = optarg; p != NULL; optarg = p)
 922                         {
 923                                 p = strchr(p, ',');
 924                                 if (p != NULL)
 925                                         *p++ = '\0';
 926                                 if (sm_strcasecmp(optarg, "success") == 0)
 927                                         DefaultNotify |= QPINGONSUCCESS;
 928                                 else if (sm_strcasecmp(optarg, "failure") == 0)
 929                                         DefaultNotify |= QPINGONFAILURE;
 930                                 else if (sm_strcasecmp(optarg, "delay") == 0)
 931                                         DefaultNotify |= QPINGONDELAY;
 932                                 else
 933                                 {
 934                                         usrerr("Invalid -N argument");
 935                                         ExitStat = EX_USAGE;
 936                                 }
 937                         }
 938                         break;
 939
 940                   case 'o':     /* set option */
 941                         setoption(*optarg, optarg + 1, false, true,
 942                                   &BlankEnvelope);
 943                         break;
 944
 945                   case 'O':     /* set option (long form) */
 946                         setoption(' ', optarg, false, true, &BlankEnvelope);
 947                         break;
 948
 949                   case 'p':     /* set protocol */
 950                         CHECK_AGAINST_OPMODE(j);
 951                         p = strchr(optarg, ':');
 952                         if (p != NULL)
 953                         {
 954                                 *p++ = '\0';
 955                                 if (*p != '\0')
 956                                 {
 957                                         i = strlen(p) + 1;
 958                                         ep = sm_malloc_x(i);
 959                                         cleanstrcpy(ep, p, i);
 960                                         macdefine(&BlankEnvelope.e_macro,
 961                                                   A_HEAP, 's', ep);
 962                                 }
 963                         }
 964                         if (*optarg != '\0')
 965                         {
 966                                 i = strlen(optarg) + 1;
 967                                 ep = sm_malloc_x(i);
 968                                 cleanstrcpy(ep, optarg, i);
 969                                 macdefine(&BlankEnvelope.e_macro, A_HEAP,
 970                                           'r', ep);
 971                         }
 972                         break;
 973
 974                   case 'Q':     /* change quarantining on queued items */
 975                         /* sanity check */
 976                         if (OpMode != MD_DELIVER &&
 977                             OpMode != MD_QUEUERUN)
 978                         {
 979                                 usrerr("Can not use -Q with -b%c", OpMode);
 980                                 ExitStat = EX_USAGE;
 981                                 break;
 982                         }
 983
 984                         if (OpMode == MD_DELIVER)
 985                                 set_op_mode(MD_QUEUERUN);
 986
 987                         FullName = NULL;
 988
 989                         quarantining = newstr(optarg);
 990                         break;
 991
 992                   case 'q':     /* run queue files at intervals */
 993                         /* sanity check */
 994                         if (OpMode != MD_DELIVER &&
 995                             OpMode != MD_DAEMON &&
 996                             OpMode != MD_FGDAEMON &&
 997                             OpMode != MD_PRINT &&
 998                             OpMode != MD_PRINTNQE &&
 999                             OpMode != MD_QUEUERUN)
1000                         {
1001                                 usrerr("Can not use -q with -b%c", OpMode);
1002                                 ExitStat = EX_USAGE;
1003                                 break;
1004                         }
1005
1006                         /* don't override -bd, -bD or -bp */
1007                         if (OpMode == MD_DELIVER)
1008                                 set_op_mode(MD_QUEUERUN);
1009
1010                         FullName = NULL;
1011                         negate = optarg[0] == '!';
1012                         if (negate)
1013                         {
1014                                 /* negate meaning of pattern match */
1015                                 optarg++; /* skip '!' for next switch */
1016                         }
1017
1018                         switch (optarg[0])
1019                         {
1020                           case 'G': /* Limit by queue group name */
1021                                 if (negate)
1022                                 {
1023                                         usrerr("Can not use -q!G");
1024                                         ExitStat = EX_USAGE;
1025                                         break;
1026                                 }
1027                                 if (queuegroup != NULL)
1028                                 {
1029                                         usrerr("Can not use multiple -qG options");
1030                                         ExitStat = EX_USAGE;
1031                                         break;
1032                                 }
1033                                 queuegroup = newstr(&optarg[1]);
1034                                 break;
1035
1036                           case 'I': /* Limit by ID */
1037                                 new = (QUEUE_CHAR *) xalloc(sizeof(*new));
1038                                 new->queue_match = newstr(&optarg[1]);
1039                                 new->queue_negate = negate;
1040                                 new->queue_next = QueueLimitId;
1041                                 QueueLimitId = new;
1042                                 break;
1043
1044                           case 'R': /* Limit by recipient */
1045                                 new = (QUEUE_CHAR *) xalloc(sizeof(*new));
1046                                 new->queue_match = newstr(&optarg[1]);
1047                                 new->queue_negate = negate;
1048                                 new->queue_next = QueueLimitRecipient;
1049                                 QueueLimitRecipient = new;
1050                                 break;
1051
1052                           case 'S': /* Limit by sender */
1053                                 new = (QUEUE_CHAR *) xalloc(sizeof(*new));
1054                                 new->queue_match = newstr(&optarg[1]);
1055                                 new->queue_negate = negate;
1056                                 new->queue_next = QueueLimitSender;
1057                                 QueueLimitSender = new;
1058                                 break;
1059
1060                           case 'f': /* foreground queue run */
1061                                 foregroundqueue  = true;
1062                                 break;
1063
1064                           case 'Q': /* Limit by quarantine message */
1065                                 if (optarg[1] != '\0')
1066                                 {
1067                                         new = (QUEUE_CHAR *) xalloc(sizeof(*new));
1068                                         new->queue_match = newstr(&optarg[1]);
1069                                         new->queue_negate = negate;
1070                                         new->queue_next = QueueLimitQuarantine;
1071                                         QueueLimitQuarantine = new;
1072                                 }
1073                                 QueueMode = QM_QUARANTINE;
1074                                 break;
1075
1076                           case 'L': /* act on lost items */
1077                                 QueueMode = QM_LOST;
1078                                 break;
1079
1080                           case 'p': /* Persistent queue */
1081                                 queuepersistent = true;
1082                                 if (QueueIntvl == 0)
1083                                         QueueIntvl = 1;
1084                                 if (optarg[1] == '\0')
1085                                         break;
1086                                 ++optarg;
1087                                 /* FALLTHROUGH */
1088
1089                           default:
1090                                 i = Errors;
1091                                 QueueIntvl = convtime(optarg, 'm');
1092                                 if (QueueIntvl < 0)
1093                                 {
1094                                         usrerr("Invalid -q value");
1095                                         ExitStat = EX_USAGE;
1096                                 }
1097
1098                                 /* check for bad conversion */
1099                                 if (i < Errors)
1100                                         ExitStat = EX_USAGE;
1101                                 break;
1102                         }
1103                         break;
1104
1105                   case 'R':     /* DSN RET: what to return */
1106                         CHECK_AGAINST_OPMODE(j);
1107                         if (bitset(EF_RET_PARAM, BlankEnvelope.e_flags))
1108                         {
1109                                 usrerr("Duplicate -R flag");
1110                                 ExitStat = EX_USAGE;
1111                                 break;
1112                         }
1113                         BlankEnvelope.e_flags |= EF_RET_PARAM;
1114                         if (sm_strcasecmp(optarg, "hdrs") == 0)
1115                                 BlankEnvelope.e_flags |= EF_NO_BODY_RETN;
1116                         else if (sm_strcasecmp(optarg, "full") != 0)
1117                         {
1118                                 usrerr("Invalid -R value");
1119                                 ExitStat = EX_USAGE;
1120                         }
1121                         macdefine(&BlankEnvelope.e_macro, A_TEMP,
1122                                   macid("{dsn_ret}"), optarg);
1123                         break;
1124
1125                   case 't':     /* read recipients from message */
1126                         CHECK_AGAINST_OPMODE(j);
1127                         GrabTo = true;
1128                         break;
1129
1130                   case 'V':     /* DSN ENVID: set "original" envelope id */
1131                         CHECK_AGAINST_OPMODE(j);
1132                         if (!xtextok(optarg))
1133                         {
1134                                 usrerr("Invalid syntax in -V flag");
1135                                 ExitStat = EX_USAGE;
1136                         }
1137                         else
1138                         {
1139                                 BlankEnvelope.e_envid = newstr(optarg);
1140                                 macdefine(&BlankEnvelope.e_macro, A_TEMP,
1141                                           macid("{dsn_envid}"), optarg);
1142                         }
1143                         break;
1144
1145                   case 'X':     /* traffic log file */
1146                         dp = drop_privileges(true);
1147                         setstat(dp);
1148                         if (stat(optarg, &traf_st) == 0 &&
1149                             S_ISFIFO(traf_st.st_mode))
1150                                 TrafficLogFile = sm_io_open(SmFtStdio,
1151                                                             SM_TIME_DEFAULT,
1152                                                             optarg,
1153                                                             SM_IO_WRONLY, NULL);
1154                         else
1155                                 TrafficLogFile = sm_io_open(SmFtStdio,
1156                                                             SM_TIME_DEFAULT,
1157                                                             optarg,
1158                                                             SM_IO_APPEND, NULL);
1159                         if (TrafficLogFile == NULL)
1160                         {
1161                                 syserr("cannot open %s", optarg);
1162                                 ExitStat = EX_CANTCREAT;
1163                                 break;
1164                         }
1165                         (void) sm_io_setvbuf(TrafficLogFile, SM_TIME_DEFAULT,
1166                                              NULL, SM_IO_LBF, 0);
1167                         break;
1168
1169                         /* compatibility flags */
1170                   case 'c':     /* connect to non-local mailers */
1171                   case 'i':     /* don't let dot stop me */
1172                   case 'm':     /* send to me too */
1173                   case 'T':     /* set timeout interval */
1174                   case 'v':     /* give blow-by-blow description */
1175                         setoption(j, "T", false, true, &BlankEnvelope);
1176                         break;
1177
1178                   case 'e':     /* error message disposition */
1179                   case 'M':     /* define macro */
1180                         setoption(j, optarg, false, true, &BlankEnvelope);
1181                         break;
1182
1183                   case 's':     /* save From lines in headers */
1184                         setoption('f', "T", false, true, &BlankEnvelope);
1185                         break;
1186
1187 #ifdef DBM
1188                   case 'I':     /* initialize alias DBM file */
1189                         set_op_mode(MD_INITALIAS);
1190                         break;
1191 #endif /* DBM */
1192
1193 #if defined(__osf__) || defined(_AIX3)
1194                   case 'x':     /* random flag that OSF/1 & AIX mailx passes */
1195                         break;
1196 #endif /* defined(__osf__) || defined(_AIX3) */
1197 #if defined(sony_news)
1198                   case 'E':
1199                   case 'J':     /* ignore flags for Japanese code conversion
1200                                    implemented on Sony NEWS */
1201                         break;
1202 #endif /* defined(sony_news) */
1203
1204                   default:
1205                         finis(true, true, EX_USAGE);
1206                         /* NOTREACHED */
1207                         break;
1208                 }
1209         }
1210
1211         /* if we've had errors so far, exit now */
1212         if ((ExitStat != EX_OK && OpMode != MD_TEST && OpMode != MD_CHECKCONFIG) ||
1213             ExitStat == EX_OSERR)
1214         {
1215                 finis(false, true, ExitStat);
1216                 /* NOTREACHED */
1217         }
1218
1219         if (bitset(SUBMIT_MTA, SubmitMode))
1220         {
1221                 /* If set daemon_flags on command line, don't reset it */
1222                 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL)
1223                         macdefine(&BlankEnvelope.e_macro, A_PERM,
1224                                   macid("{daemon_flags}"), "CC f");
1225         }
1226         else if (OpMode == MD_DELIVER || OpMode == MD_SMTP)
1227         {
1228                 SubmitMode = SUBMIT_MSA;
1229
1230                 /* If set daemon_flags on command line, don't reset it */
1231                 if (macvalue(macid("{daemon_flags}"), &BlankEnvelope) == NULL)
1232                         macdefine(&BlankEnvelope.e_macro, A_PERM,
1233                                   macid("{daemon_flags}"), "c u");
1234         }
1235
1236         /*
1237         **  Do basic initialization.
1238         **      Read system control file.
1239         **      Extract special fields for local use.
1240         */
1241
1242 #if XDEBUG
1243         checkfd012("before readcf");
1244 #endif /* XDEBUG */
1245         vendor_pre_defaults(&BlankEnvelope);
1246
1247         readcf(getcfname(OpMode, SubmitMode, cftype, conffile),
1248                          safecf, &BlankEnvelope);
1249 #if !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_)
1250         ConfigFileRead = true;
1251 #endif /* !defined(_USE_SUN_NSSWITCH_) && !defined(_USE_DEC_SVC_CONF_) */
1252         vendor_post_defaults(&BlankEnvelope);
1253
1254         /* now we can complain about missing fds */
1255         if (MissingFds != 0 && LogLevel > 8)
1256         {
1257                 char mbuf[MAXLINE];
1258
1259                 mbuf[0] = '\0';
1260                 if (bitset(1 << STDIN_FILENO, MissingFds))
1261                         (void) sm_strlcat(mbuf, ", stdin", sizeof(mbuf));
1262                 if (bitset(1 << STDOUT_FILENO, MissingFds))
1263                         (void) sm_strlcat(mbuf, ", stdout", sizeof(mbuf));
1264                 if (bitset(1 << STDERR_FILENO, MissingFds))
1265                         (void) sm_strlcat(mbuf, ", stderr", sizeof(mbuf));
1266
1267                 /* Notice: fill_errno is from high above: fill_fd() */
1268                 sm_syslog(LOG_WARNING, NOQID,
1269                           "File descriptors missing on startup: %s; %s",
1270                           &mbuf[2], sm_errstring(fill_errno));
1271         }
1272
1273         /* Remove the ability for a normal user to send signals */
1274         if (RealUid != 0 && RealUid != geteuid())
1275         {
1276                 uid_t new_uid = geteuid();
1277
1278 #if HASSETREUID
1279                 /*
1280                 **  Since we can differentiate between uid and euid,
1281                 **  make the uid a different user so the real user
1282                 **  can't send signals.  However, it doesn't need to be
1283                 **  root (euid has root).
1284                 */
1285
1286                 if (new_uid == 0)
1287                         new_uid = DefUid;
1288                 if (tTd(47, 5))
1289                         sm_dprintf("Changing real uid to %d\n", (int) new_uid);
1290                 if (setreuid(new_uid, geteuid()) < 0)
1291                 {
1292                         syserr("main: setreuid(%d, %d) failed",
1293                                (int) new_uid, (int) geteuid());
1294                         finis(false, true, EX_OSERR);
1295                         /* NOTREACHED */
1296                 }
1297                 if (tTd(47, 10))
1298                         sm_dprintf("Now running as e/ruid %d:%d\n",
1299                                    (int) geteuid(), (int) getuid());
1300 #else /* HASSETREUID */
1301                 /*
1302                 **  Have to change both effective and real so need to
1303                 **  change them both to effective to keep privs.
1304                 */
1305
1306                 if (tTd(47, 5))
1307                         sm_dprintf("Changing uid to %d\n", (int) new_uid);
1308                 if (setuid(new_uid) < 0)
1309                 {
1310                         syserr("main: setuid(%d) failed", (int) new_uid);
1311                         finis(false, true, EX_OSERR);
1312                         /* NOTREACHED */
1313                 }
1314                 if (tTd(47, 10))
1315                         sm_dprintf("Now running as e/ruid %d:%d\n",
1316                                    (int) geteuid(), (int) getuid());
1317 #endif /* HASSETREUID */
1318         }
1319
1320 #if NAMED_BIND
1321         if (FallbackMX != NULL)
1322                 (void) getfallbackmxrr(FallbackMX);
1323 #endif /* NAMED_BIND */
1324
1325         if (SuperSafe == SAFE_INTERACTIVE && !SM_IS_INTERACTIVE(CurEnv->e_sendmode))
1326         {
1327                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
1328                                      "WARNING: SuperSafe=interactive should only be used with\n         DeliveryMode=interactive\n");
1329         }
1330
1331         if (UseMSP && (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON))
1332         {
1333                 usrerr("Mail submission program cannot be used as daemon");
1334                 finis(false, true, EX_USAGE);
1335         }
1336
1337         if (OpMode == MD_DELIVER || OpMode == MD_SMTP ||
1338             OpMode == MD_QUEUERUN || OpMode == MD_ARPAFTP ||
1339             OpMode == MD_DAEMON || OpMode == MD_FGDAEMON)
1340                 makeworkgroups();
1341
1342         /* set up the basic signal handlers */
1343         if (sm_signal(SIGINT, SIG_IGN) != SIG_IGN)
1344                 (void) sm_signal(SIGINT, intsig);
1345         (void) sm_signal(SIGTERM, intsig);
1346
1347         /* Enforce use of local time (null string overrides this) */
1348         if (TimeZoneSpec == NULL)
1349                 unsetenv("TZ");
1350         else if (TimeZoneSpec[0] != '\0')
1351                 sm_setuserenv("TZ", TimeZoneSpec);
1352         else
1353                 sm_setuserenv("TZ", NULL);
1354         tzset();
1355
1356         /* initialize mailbox database */
1357         i = sm_mbdb_initialize(Mbdb);
1358         if (i != EX_OK)
1359         {
1360                 usrerr("Can't initialize mailbox database \"%s\": %s",
1361                        Mbdb, sm_strexit(i));
1362                 ExitStat = i;
1363         }
1364
1365         /* avoid denial-of-service attacks */
1366         resetlimits();
1367
1368         if (OpMode == MD_TEST)
1369         {
1370                 /* can't be done after readcf if RunAs* is used */
1371                 dp = drop_privileges(true);
1372                 if (dp != EX_OK)
1373                 {
1374                         finis(false, true, dp);
1375                         /* NOTREACHED */
1376                 }
1377         }
1378         else if (OpMode != MD_DAEMON && OpMode != MD_FGDAEMON)
1379         {
1380                 /* drop privileges -- daemon mode done after socket/bind */
1381                 dp = drop_privileges(false);
1382                 setstat(dp);
1383                 if (dp == EX_OK && UseMSP && (geteuid() == 0 || getuid() == 0))
1384                 {
1385                         usrerr("Mail submission program must have RunAsUser set to non root user");
1386                         finis(false, true, EX_CONFIG);
1387                         /* NOTREACHED */
1388                 }
1389         }
1390
1391 #if NAMED_BIND
1392         _res.retry = TimeOuts.res_retry[RES_TO_DEFAULT];
1393         _res.retrans = TimeOuts.res_retrans[RES_TO_DEFAULT];
1394 #endif /* NAMED_BIND */
1395
1396         /*
1397         **  Find our real host name for future logging.
1398         */
1399
1400         authinfo = getauthinfo(STDIN_FILENO, &forged);
1401         macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo);
1402
1403         /* suppress error printing if errors mailed back or whatever */
1404         if (BlankEnvelope.e_errormode != EM_PRINT)
1405                 HoldErrs = true;
1406
1407         /* set up the $=m class now, after .cf has a chance to redefine $m */
1408         expand("\201m", jbuf, sizeof(jbuf), &BlankEnvelope);
1409         if (jbuf[0] != '\0')
1410                 setclass('m', jbuf);
1411
1412         /* probe interfaces and locate any additional names */
1413         if (DontProbeInterfaces != DPI_PROBENONE)
1414                 load_if_names();
1415
1416         if (tTd(0, 10))
1417         {
1418                 char pidpath[MAXPATHLEN];
1419
1420                 /* Now we know which .cf file we use */
1421                 sm_dprintf("     Conf file:\t%s (selected)\n",
1422                            getcfname(OpMode, SubmitMode, cftype, conffile));
1423                 expand(PidFile, pidpath, sizeof(pidpath), &BlankEnvelope);
1424                 sm_dprintf("      Pid file:\t%s (selected)\n", pidpath);
1425         }
1426
1427         if (tTd(0, 1))
1428         {
1429                 sm_dprintf("\n============ SYSTEM IDENTITY (after readcf) ============");
1430                 sm_dprintf("\n      (short domain name) $w = ");
1431                 xputs(sm_debug_file(), macvalue('w', &BlankEnvelope));
1432                 sm_dprintf("\n  (canonical domain name) $j = ");
1433                 xputs(sm_debug_file(), macvalue('j', &BlankEnvelope));
1434                 sm_dprintf("\n         (subdomain name) $m = ");
1435                 xputs(sm_debug_file(), macvalue('m', &BlankEnvelope));
1436                 sm_dprintf("\n              (node name) $k = ");
1437                 xputs(sm_debug_file(), macvalue('k', &BlankEnvelope));
1438                 sm_dprintf("\n========================================================\n\n");
1439         }
1440
1441         /*
1442         **  Do more command line checking -- these are things that
1443         **  have to modify the results of reading the config file.
1444         */
1445
1446         /* process authorization warnings from command line */
1447         if (warn_C_flag)
1448                 auth_warning(&BlankEnvelope, "Processed by %s with -C %s",
1449                              RealUserName, conffile);
1450         if (Warn_Q_option && !wordinclass(RealUserName, 't'))
1451                 auth_warning(&BlankEnvelope, "Processed from queue %s",
1452                              QueueDir);
1453         if (sysloglabel != NULL && !wordinclass(RealUserName, 't') &&
1454             RealUid != 0 && RealUid != TrustedUid && LogLevel > 1)
1455                 sm_syslog(LOG_WARNING, NOQID, "user %d changed syslog label",
1456                           (int) RealUid);
1457
1458         /* check body type for legality */
1459         i = check_bodytype(BlankEnvelope.e_bodytype);
1460         if (i == BODYTYPE_ILLEGAL)
1461         {
1462                 usrerr("Illegal body type %s", BlankEnvelope.e_bodytype);
1463                 BlankEnvelope.e_bodytype = NULL;
1464         }
1465         else if (i != BODYTYPE_NONE)
1466                 SevenBitInput = (i == BODYTYPE_7BIT);
1467
1468         /* tweak default DSN notifications */
1469         if (DefaultNotify == 0)
1470                 DefaultNotify = QPINGONFAILURE|QPINGONDELAY;
1471
1472         /* check for sane configuration level */
1473         if (ConfigLevel > MAXCONFIGLEVEL)
1474         {
1475                 syserr("Warning: .cf version level (%d) exceeds sendmail version %s functionality (%d)",
1476                        ConfigLevel, Version, MAXCONFIGLEVEL);
1477         }
1478
1479         /* need MCI cache to have persistence */
1480         if (HostStatDir != NULL && MaxMciCache == 0)
1481         {
1482                 HostStatDir = NULL;
1483                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
1484                                      "Warning: HostStatusDirectory disabled with ConnectionCacheSize = 0\n");
1485         }
1486
1487         /* need HostStatusDir in order to have SingleThreadDelivery */
1488         if (SingleThreadDelivery && HostStatDir == NULL)
1489         {
1490                 SingleThreadDelivery = false;
1491                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
1492                                      "Warning: HostStatusDirectory required for SingleThreadDelivery\n");
1493         }
1494
1495 #if _FFR_MEMSTAT
1496         j = sm_memstat_open();
1497         if (j < 0 && (RefuseLowMem > 0 || QueueLowMem > 0) && LogLevel > 4)
1498         {
1499                 sm_syslog(LOG_WARNING, NOQID,
1500                           "cannot get memory statistics, settings ignored, error=%d"
1501                           , j);
1502         }
1503 #endif /* _FFR_MEMSTAT */
1504
1505         /* check for permissions */
1506         if (RealUid != 0 &&
1507             RealUid != TrustedUid)
1508         {
1509                 char *action = NULL;
1510
1511                 switch (OpMode)
1512                 {
1513                   case MD_QUEUERUN:
1514                         if (quarantining != NULL)
1515                                 action = "quarantine jobs";
1516                         else
1517                         {
1518                                 /* Normal users can do a single queue run */
1519                                 if (QueueIntvl == 0)
1520                                         break;
1521                         }
1522
1523                         /* but not persistent queue runners */
1524                         if (action == NULL)
1525                                 action = "start a queue runner daemon";
1526                         /* FALLTHROUGH */
1527
1528                   case MD_PURGESTAT:
1529                         if (action == NULL)
1530                                 action = "purge host status";
1531                         /* FALLTHROUGH */
1532
1533                   case MD_DAEMON:
1534                   case MD_FGDAEMON:
1535                         if (action == NULL)
1536                                 action = "run daemon";
1537
1538                         if (tTd(65, 1))
1539                                 sm_dprintf("Deny user %d attempt to %s\n",
1540                                            (int) RealUid, action);
1541
1542                         if (LogLevel > 1)
1543                                 sm_syslog(LOG_ALERT, NOQID,
1544                                           "user %d attempted to %s",
1545                                           (int) RealUid, action);
1546                         HoldErrs = false;
1547                         usrerr("Permission denied (real uid not trusted)");
1548                         finis(false, true, EX_USAGE);
1549                         /* NOTREACHED */
1550                         break;
1551
1552                   case MD_VERIFY:
1553                         if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags))
1554                         {
1555                                 /*
1556                                 **  If -bv and RestrictExpand,
1557                                 **  drop privs to prevent normal
1558                                 **  users from reading private
1559                                 **  aliases/forwards/:include:s
1560                                 */
1561
1562                                 if (tTd(65, 1))
1563                                         sm_dprintf("Drop privs for user %d attempt to expand (RestrictExpand)\n",
1564                                                    (int) RealUid);
1565
1566                                 dp = drop_privileges(true);
1567
1568                                 /* Fake address safety */
1569                                 if (tTd(65, 1))
1570                                         sm_dprintf("Faking DontBlameSendmail=NonRootSafeAddr\n");
1571                                 setbitn(DBS_NONROOTSAFEADDR, DontBlameSendmail);
1572
1573                                 if (dp != EX_OK)
1574                                 {
1575                                         if (tTd(65, 1))
1576                                                 sm_dprintf("Failed to drop privs for user %d attempt to expand, exiting\n",
1577                                                            (int) RealUid);
1578                                         CurEnv->e_id = NULL;
1579                                         finis(true, true, dp);
1580                                         /* NOTREACHED */
1581                                 }
1582                         }
1583                         break;
1584
1585                   case MD_TEST:
1586                   case MD_CHECKCONFIG:
1587                   case MD_PRINT:
1588                   case MD_PRINTNQE:
1589                   case MD_FREEZE:
1590                   case MD_HOSTSTAT:
1591                         /* Nothing special to check */
1592                         break;
1593
1594                   case MD_INITALIAS:
1595                         if (!wordinclass(RealUserName, 't'))
1596                         {
1597                                 if (tTd(65, 1))
1598                                         sm_dprintf("Deny user %d attempt to rebuild the alias map\n",
1599                                                    (int) RealUid);
1600                                 if (LogLevel > 1)
1601                                         sm_syslog(LOG_ALERT, NOQID,
1602                                                   "user %d attempted to rebuild the alias map",
1603                                                   (int) RealUid);
1604                                 HoldErrs = false;
1605                                 usrerr("Permission denied (real uid not trusted)");
1606                                 finis(false, true, EX_USAGE);
1607                                 /* NOTREACHED */
1608                         }
1609                         if (UseMSP)
1610                         {
1611                                 HoldErrs = false;
1612                                 usrerr("User %d cannot rebuild aliases in mail submission program",
1613                                        (int) RealUid);
1614                                 finis(false, true, EX_USAGE);
1615                                 /* NOTREACHED */
1616                         }
1617                         /* FALLTHROUGH */
1618
1619                   default:
1620                         if (bitset(PRIV_RESTRICTEXPAND, PrivacyFlags) &&
1621                             Verbose != 0)
1622                         {
1623                                 /*
1624                                 **  If -v and RestrictExpand, reset
1625                                 **  Verbose to prevent normal users
1626                                 **  from seeing the expansion of
1627                                 **  aliases/forwards/:include:s
1628                                 */
1629
1630                                 if (tTd(65, 1))
1631                                         sm_dprintf("Dropping verbosity for user %d (RestrictExpand)\n",
1632                                                    (int) RealUid);
1633                                 Verbose = 0;
1634                         }
1635                         break;
1636                 }
1637         }
1638
1639         if (MeToo)
1640                 BlankEnvelope.e_flags |= EF_METOO;
1641
1642         switch (OpMode)
1643         {
1644           case MD_TEST:
1645                 /* don't have persistent host status in test mode */
1646                 HostStatDir = NULL;
1647                 /* FALLTHROUGH */
1648
1649           case MD_CHECKCONFIG:
1650                 if (Verbose == 0)
1651                         Verbose = 2;
1652                 BlankEnvelope.e_errormode = EM_PRINT;
1653                 HoldErrs = false;
1654                 break;
1655
1656           case MD_VERIFY:
1657                 BlankEnvelope.e_errormode = EM_PRINT;
1658                 HoldErrs = false;
1659                 /* arrange to exit cleanly on hangup signal */
1660                 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL)
1661                         (void) sm_signal(SIGHUP, intsig);
1662                 if (geteuid() != 0)
1663                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
1664                                              "Notice: -bv may give misleading output for non-privileged user\n");
1665                 break;
1666
1667           case MD_FGDAEMON:
1668                 run_in_foreground = true;
1669                 set_op_mode(MD_DAEMON);
1670                 /* FALLTHROUGH */
1671
1672           case MD_DAEMON:
1673                 vendor_daemon_setup(&BlankEnvelope);
1674
1675                 /* remove things that don't make sense in daemon mode */
1676                 FullName = NULL;
1677                 GrabTo = false;
1678
1679                 /* arrange to restart on hangup signal */
1680                 if (SaveArgv[0] == NULL || SaveArgv[0][0] != '/')
1681                         sm_syslog(LOG_WARNING, NOQID,
1682                                   "daemon invoked without full pathname; kill -1 won't work");
1683                 break;
1684
1685           case MD_INITALIAS:
1686                 Verbose = 2;
1687                 BlankEnvelope.e_errormode = EM_PRINT;
1688                 HoldErrs = false;
1689                 /* FALLTHROUGH */
1690
1691           default:
1692                 /* arrange to exit cleanly on hangup signal */
1693                 if (sm_signal(SIGHUP, SIG_IGN) == (sigfunc_t) SIG_DFL)
1694                         (void) sm_signal(SIGHUP, intsig);
1695                 break;
1696         }
1697
1698         /* special considerations for FullName */
1699         if (FullName != NULL)
1700         {
1701                 char *full = NULL;
1702
1703                 /* full names can't have newlines */
1704                 if (strchr(FullName, '\n') != NULL)
1705                 {
1706                         full = newstr(denlstring(FullName, true, true));
1707                         FullName = full;
1708                 }
1709
1710                 /* check for characters that may have to be quoted */
1711                 if (!rfc822_string(FullName))
1712                 {
1713                         /*
1714                         **  Quote a full name with special characters
1715                         **  as a comment so crackaddr() doesn't destroy
1716                         **  the name portion of the address.
1717                         */
1718
1719                         FullName = addquotes(FullName, NULL);
1720                         if (full != NULL)
1721                                 sm_free(full);  /* XXX */
1722                 }
1723         }
1724
1725         /* do heuristic mode adjustment */
1726         if (Verbose)
1727         {
1728                 /* turn off noconnect option */
1729                 setoption('c', "F", true, false, &BlankEnvelope);
1730
1731                 /* turn on interactive delivery */
1732                 setoption('d', "", true, false, &BlankEnvelope);
1733         }
1734
1735 #ifdef VENDOR_CODE
1736         /* check for vendor mismatch */
1737         if (VendorCode != VENDOR_CODE)
1738         {
1739                 message("Warning: .cf file vendor code mismatch: sendmail expects vendor %s, .cf file vendor is %s",
1740                         getvendor(VENDOR_CODE), getvendor(VendorCode));
1741         }
1742 #endif /* VENDOR_CODE */
1743
1744         /* check for out of date configuration level */
1745         if (ConfigLevel < MAXCONFIGLEVEL)
1746         {
1747                 message("Warning: .cf file is out of date: sendmail %s supports version %d, .cf file is version %d",
1748                         Version, MAXCONFIGLEVEL, ConfigLevel);
1749         }
1750
1751         if (ConfigLevel < 3)
1752                 UseErrorsTo = true;
1753
1754         /* set options that were previous macros */
1755         if (SmtpGreeting == NULL)
1756         {
1757                 if (ConfigLevel < 7 &&
1758                     (p = macvalue('e', &BlankEnvelope)) != NULL)
1759                         SmtpGreeting = newstr(p);
1760                 else
1761                         SmtpGreeting = "\201j Sendmail \201v ready at \201b";
1762         }
1763         if (UnixFromLine == NULL)
1764         {
1765                 if (ConfigLevel < 7 &&
1766                     (p = macvalue('l', &BlankEnvelope)) != NULL)
1767                         UnixFromLine = newstr(p);
1768                 else
1769                         UnixFromLine = "From \201g  \201d";
1770         }
1771         SmtpError[0] = '\0';
1772
1773         /* our name for SMTP codes */
1774         expand("\201j", jbuf, sizeof(jbuf), &BlankEnvelope);
1775         if (jbuf[0] == '\0')
1776                 PSTRSET(MyHostName, "localhost");
1777         else
1778                 PSTRSET(MyHostName, jbuf);
1779         if (strchr(MyHostName, '.') == NULL)
1780                 message("WARNING: local host name (%s) is not qualified; see cf/README: WHO AM I?",
1781                         MyHostName);
1782
1783         /* make certain that this name is part of the $=w class */
1784         setclass('w', MyHostName);
1785
1786         /* fill in the structure of the *default* queue */
1787         st = stab("mqueue", ST_QUEUE, ST_FIND);
1788         if (st == NULL)
1789                 syserr("No default queue (mqueue) defined");
1790         else
1791                 set_def_queueval(st->s_quegrp, true);
1792
1793         /* the indices of built-in mailers */
1794         st = stab("local", ST_MAILER, ST_FIND);
1795         if (st != NULL)
1796                 LocalMailer = st->s_mailer;
1797         else if (OpMode != MD_TEST || !warn_C_flag)
1798                 syserr("No local mailer defined");
1799
1800         st = stab("prog", ST_MAILER, ST_FIND);
1801         if (st == NULL)
1802                 syserr("No prog mailer defined");
1803         else
1804         {
1805                 ProgMailer = st->s_mailer;
1806                 clrbitn(M_MUSER, ProgMailer->m_flags);
1807         }
1808
1809         st = stab("*file*", ST_MAILER, ST_FIND);
1810         if (st == NULL)
1811                 syserr("No *file* mailer defined");
1812         else
1813         {
1814                 FileMailer = st->s_mailer;
1815                 clrbitn(M_MUSER, FileMailer->m_flags);
1816         }
1817
1818         st = stab("*include*", ST_MAILER, ST_FIND);
1819         if (st == NULL)
1820                 syserr("No *include* mailer defined");
1821         else
1822                 InclMailer = st->s_mailer;
1823
1824         if (ConfigLevel < 6)
1825         {
1826                 /* heuristic tweaking of local mailer for back compat */
1827                 if (LocalMailer != NULL)
1828                 {
1829                         setbitn(M_ALIASABLE, LocalMailer->m_flags);
1830                         setbitn(M_HASPWENT, LocalMailer->m_flags);
1831                         setbitn(M_TRYRULESET5, LocalMailer->m_flags);
1832                         setbitn(M_CHECKINCLUDE, LocalMailer->m_flags);
1833                         setbitn(M_CHECKPROG, LocalMailer->m_flags);
1834                         setbitn(M_CHECKFILE, LocalMailer->m_flags);
1835                         setbitn(M_CHECKUDB, LocalMailer->m_flags);
1836                 }
1837                 if (ProgMailer != NULL)
1838                         setbitn(M_RUNASRCPT, ProgMailer->m_flags);
1839                 if (FileMailer != NULL)
1840                         setbitn(M_RUNASRCPT, FileMailer->m_flags);
1841         }
1842         if (ConfigLevel < 7)
1843         {
1844                 if (LocalMailer != NULL)
1845                         setbitn(M_VRFY250, LocalMailer->m_flags);
1846                 if (ProgMailer != NULL)
1847                         setbitn(M_VRFY250, ProgMailer->m_flags);
1848                 if (FileMailer != NULL)
1849                         setbitn(M_VRFY250, FileMailer->m_flags);
1850         }
1851
1852         /* MIME Content-Types that cannot be transfer encoded */
1853         setclass('n', "multipart/signed");
1854
1855         /* MIME message/xxx subtypes that can be treated as messages */
1856         setclass('s', "rfc822");
1857
1858         /* MIME Content-Transfer-Encodings that can be encoded */
1859         setclass('e', "7bit");
1860         setclass('e', "8bit");
1861         setclass('e', "binary");
1862
1863 #ifdef USE_B_CLASS
1864         /* MIME Content-Types that should be treated as binary */
1865         setclass('b', "image");
1866         setclass('b', "audio");
1867         setclass('b', "video");
1868         setclass('b', "application/octet-stream");
1869 #endif /* USE_B_CLASS */
1870
1871         /* MIME headers which have fields to check for overflow */
1872         setclass(macid("{checkMIMEFieldHeaders}"), "content-disposition");
1873         setclass(macid("{checkMIMEFieldHeaders}"), "content-type");
1874
1875         /* MIME headers to check for length overflow */
1876         setclass(macid("{checkMIMETextHeaders}"), "content-description");
1877
1878         /* MIME headers to check for overflow and rebalance */
1879         setclass(macid("{checkMIMEHeaders}"), "content-disposition");
1880         setclass(macid("{checkMIMEHeaders}"), "content-id");
1881         setclass(macid("{checkMIMEHeaders}"), "content-transfer-encoding");
1882         setclass(macid("{checkMIMEHeaders}"), "content-type");
1883         setclass(macid("{checkMIMEHeaders}"), "mime-version");
1884
1885         /* Macros to save in the queue file -- don't remove any */
1886         setclass(macid("{persistentMacros}"), "r");
1887         setclass(macid("{persistentMacros}"), "s");
1888         setclass(macid("{persistentMacros}"), "_");
1889         setclass(macid("{persistentMacros}"), "{if_addr}");
1890         setclass(macid("{persistentMacros}"), "{daemon_flags}");
1891
1892         /* operate in queue directory */
1893         if (QueueDir == NULL || *QueueDir == '\0')
1894         {
1895                 if (OpMode != MD_TEST)
1896                 {
1897                         syserr("QueueDirectory (Q) option must be set");
1898                         ExitStat = EX_CONFIG;
1899                 }
1900         }
1901         else
1902         {
1903                 if (OpMode != MD_TEST)
1904                         setup_queues(OpMode == MD_DAEMON);
1905         }
1906
1907         /* check host status directory for validity */
1908         if (HostStatDir != NULL && !path_is_dir(HostStatDir, false))
1909         {
1910                 /* cannot use this value */
1911                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
1912                                      "Warning: Cannot use HostStatusDirectory = %s: %s\n",
1913                                      HostStatDir, sm_errstring(errno));
1914                 HostStatDir = NULL;
1915         }
1916
1917         if (OpMode == MD_QUEUERUN &&
1918             RealUid != 0 && bitset(PRIV_RESTRICTQRUN, PrivacyFlags))
1919         {
1920                 struct stat stbuf;
1921
1922                 /* check to see if we own the queue directory */
1923                 if (stat(".", &stbuf) < 0)
1924                         syserr("main: cannot stat %s", QueueDir);
1925                 if (stbuf.st_uid != RealUid)
1926                 {
1927                         /* nope, really a botch */
1928                         HoldErrs = false;
1929                         usrerr("You do not have permission to process the queue");
1930                         finis(false, true, EX_NOPERM);
1931                         /* NOTREACHED */
1932                 }
1933         }
1934
1935 #if MILTER
1936         /* sanity checks on milter filters */
1937         if (OpMode == MD_DAEMON || OpMode == MD_SMTP)
1938         {
1939                 milter_config(InputFilterList, InputFilters, MAXFILTERS);
1940                 setup_daemon_milters();
1941         }
1942 #endif /* MILTER */
1943
1944         /* Convert queuegroup string to qgrp number */
1945         if (queuegroup != NULL)
1946         {
1947                 qgrp = name2qid(queuegroup);
1948                 if (qgrp == NOQGRP)
1949                 {
1950                         HoldErrs = false;
1951                         usrerr("Queue group %s unknown", queuegroup);
1952                         finis(false, true, ExitStat);
1953                         /* NOTREACHED */
1954                 }
1955         }
1956
1957         /* if checking config or have had errors so far, exit now */
1958         if (OpMode == MD_CHECKCONFIG || (ExitStat != EX_OK && OpMode != MD_TEST))
1959         {
1960                 finis(false, true, ExitStat);
1961                 /* NOTREACHED */
1962         }
1963
1964 #if SASL
1965         /* sendmail specific SASL initialization */
1966         sm_sasl_init();
1967 #endif /* SASL */
1968
1969 #if XDEBUG
1970         checkfd012("before main() initmaps");
1971 #endif /* XDEBUG */
1972
1973         /*
1974         **  Do operation-mode-dependent initialization.
1975         */
1976
1977         switch (OpMode)
1978         {
1979           case MD_PRINT:
1980                 /* print the queue */
1981                 HoldErrs = false;
1982                 (void) dropenvelope(&BlankEnvelope, true, false);
1983                 (void) sm_signal(SIGPIPE, sigpipe);
1984                 if (qgrp != NOQGRP)
1985                 {
1986                         int j;
1987
1988                         /* Selecting a particular queue group to run */
1989                         for (j = 0; j < Queue[qgrp]->qg_numqueues; j++)
1990                         {
1991                                 if (StopRequest)
1992                                         stop_sendmail();
1993                                 (void) print_single_queue(qgrp, j);
1994                         }
1995                         finis(false, true, EX_OK);
1996                         /* NOTREACHED */
1997                 }
1998                 printqueue();
1999                 finis(false, true, EX_OK);
2000                 /* NOTREACHED */
2001                 break;
2002
2003           case MD_PRINTNQE:
2004                 /* print number of entries in queue */
2005                 (void) dropenvelope(&BlankEnvelope, true, false);
2006                 (void) sm_signal(SIGPIPE, sigpipe);
2007                 printnqe(smioout, NULL);
2008                 finis(false, true, EX_OK);
2009                 /* NOTREACHED */
2010                 break;
2011
2012           case MD_QUEUERUN:
2013                 /* only handle quarantining here */
2014                 if (quarantining == NULL)
2015                         break;
2016
2017                 if (QueueMode != QM_QUARANTINE &&
2018                     QueueMode != QM_NORMAL)
2019                 {
2020                         HoldErrs = false;
2021                         usrerr("Can not use -Q with -q%c", QueueMode);
2022                         ExitStat = EX_USAGE;
2023                         finis(false, true, ExitStat);
2024                         /* NOTREACHED */
2025                 }
2026                 quarantine_queue(quarantining, qgrp);
2027                 finis(false, true, EX_OK);
2028                 break;
2029
2030           case MD_HOSTSTAT:
2031                 (void) sm_signal(SIGPIPE, sigpipe);
2032                 (void) mci_traverse_persistent(mci_print_persistent, NULL);
2033                 finis(false, true, EX_OK);
2034                 /* NOTREACHED */
2035                 break;
2036
2037           case MD_PURGESTAT:
2038                 (void) mci_traverse_persistent(mci_purge_persistent, NULL);
2039                 finis(false, true, EX_OK);
2040                 /* NOTREACHED */
2041                 break;
2042
2043           case MD_INITALIAS:
2044                 /* initialize maps */
2045                 initmaps();
2046                 finis(false, true, ExitStat);
2047                 /* NOTREACHED */
2048                 break;
2049
2050           case MD_SMTP:
2051           case MD_DAEMON:
2052                 /* reset DSN parameters */
2053                 DefaultNotify = QPINGONFAILURE|QPINGONDELAY;
2054                 macdefine(&BlankEnvelope.e_macro, A_PERM,
2055                           macid("{dsn_notify}"), NULL);
2056                 BlankEnvelope.e_envid = NULL;
2057                 macdefine(&BlankEnvelope.e_macro, A_PERM,
2058                           macid("{dsn_envid}"), NULL);
2059                 BlankEnvelope.e_flags &= ~(EF_RET_PARAM|EF_NO_BODY_RETN);
2060                 macdefine(&BlankEnvelope.e_macro, A_PERM,
2061                           macid("{dsn_ret}"), NULL);
2062
2063                 /* don't open maps for daemon -- done below in child */
2064                 break;
2065         }
2066
2067         if (tTd(0, 15))
2068         {
2069                 /* print configuration table (or at least part of it) */
2070                 if (tTd(0, 90))
2071                         printrules();
2072                 for (i = 0; i < MAXMAILERS; i++)
2073                 {
2074                         if (Mailer[i] != NULL)
2075                                 printmailer(sm_debug_file(), Mailer[i]);
2076                 }
2077         }
2078
2079         /*
2080         **  Switch to the main envelope.
2081         */
2082
2083         CurEnv = newenvelope(&MainEnvelope, &BlankEnvelope,
2084                              sm_rpool_new_x(NULL));
2085         MainEnvelope.e_flags = BlankEnvelope.e_flags;
2086
2087         /*
2088         **  If test mode, read addresses from stdin and process.
2089         */
2090
2091         if (OpMode == MD_TEST)
2092         {
2093                 if (isatty(sm_io_getinfo(smioin, SM_IO_WHAT_FD, NULL)))
2094                         Verbose = 2;
2095
2096                 if (Verbose)
2097                 {
2098                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
2099                                      "ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)\n");
2100                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
2101                                      "Enter <ruleset> <address>\n");
2102                 }
2103                 macdefine(&(MainEnvelope.e_macro), A_PERM,
2104                           macid("{addr_type}"), "e r");
2105                 for (;;)
2106                 {
2107                         SM_TRY
2108                         {
2109                                 (void) sm_signal(SIGINT, intindebug);
2110                                 (void) sm_releasesignal(SIGINT);
2111                                 if (Verbose == 2)
2112                                         (void) sm_io_fprintf(smioout,
2113                                                              SM_TIME_DEFAULT,
2114                                                              "> ");
2115                                 (void) sm_io_flush(smioout, SM_TIME_DEFAULT);
2116                                 if (sm_io_fgets(smioin, SM_TIME_DEFAULT, buf,
2117                                                 sizeof(buf)) < 0)
2118                                         testmodeline("/quit", &MainEnvelope);
2119                                 p = strchr(buf, '\n');
2120                                 if (p != NULL)
2121                                         *p = '\0';
2122                                 if (Verbose < 2)
2123                                         (void) sm_io_fprintf(smioout,
2124                                                              SM_TIME_DEFAULT,
2125                                                              "> %s\n", buf);
2126                                 testmodeline(buf, &MainEnvelope);
2127                         }
2128                         SM_EXCEPT(exc, "[!F]*")
2129                         {
2130                                 /*
2131                                 **  8.10 just prints \n on interrupt.
2132                                 **  I'm printing the exception here in case
2133                                 **  sendmail is extended to raise additional
2134                                 **  exceptions in this context.
2135                                 */
2136
2137                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
2138                                                      "\n");
2139                                 sm_exc_print(exc, smioout);
2140                         }
2141                         SM_END_TRY
2142                 }
2143         }
2144
2145 #if STARTTLS
2146         tls_ok = true;
2147         if (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER ||
2148             OpMode == MD_ARPAFTP)
2149         {
2150                 /* check whether STARTTLS is turned off for the client */
2151                 if (chkclientmodifiers(D_NOTLS))
2152                         tls_ok = false;
2153         }
2154         else if (OpMode == MD_DAEMON || OpMode == MD_FGDAEMON ||
2155                  OpMode == MD_SMTP)
2156         {
2157                 /* check whether STARTTLS is turned off */
2158                 if (chkdaemonmodifiers(D_NOTLS) && chkclientmodifiers(D_NOTLS))
2159                         tls_ok = false;
2160         }
2161         else    /* other modes don't need STARTTLS */
2162                 tls_ok = false;
2163
2164         if (tls_ok)
2165         {
2166                 /* basic TLS initialization */
2167                 tls_ok = init_tls_library(FipsMode);
2168                 if (!tls_ok && FipsMode)
2169                 {
2170                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
2171                                      "ERROR: FIPSMode failed to initialize\n");
2172                         exit(EX_USAGE);
2173                 }
2174         }
2175
2176         if (!tls_ok && (OpMode == MD_QUEUERUN || OpMode == MD_DELIVER))
2177         {
2178                 /* disable TLS for client */
2179                 setclttls(false);
2180         }
2181 #endif /* STARTTLS */
2182
2183         /*
2184         **  If collecting stuff from the queue, go start doing that.
2185         */
2186
2187         if (OpMode == MD_QUEUERUN && QueueIntvl == 0)
2188         {
2189                 pid_t pid = -1;
2190
2191 #if STARTTLS
2192                 /* init TLS for client, ignore result for now */
2193                 (void) initclttls(tls_ok);
2194 #endif /* STARTTLS */
2195
2196                 /*
2197                 **  The parent process of the caller of runqueue() needs
2198                 **  to stay around for a possible SIGTERM. The SIGTERM will
2199                 **  tell this process that all of the queue runners children
2200                 **  need to be sent SIGTERM as well. At the same time, we
2201                 **  want to return control to the command line. So we do an
2202                 **  extra fork().
2203                 */
2204
2205                 if (Verbose || foregroundqueue || (pid = fork()) <= 0)
2206                 {
2207                         /*
2208                         **  If the fork() failed we should still try to do
2209                         **  the queue run. If it succeeded then the child
2210                         **  is going to start the run and wait for all
2211                         **  of the children to finish.
2212                         */
2213
2214                         if (pid == 0)
2215                         {
2216                                 /* Reset global flags */
2217                                 RestartRequest = NULL;
2218                                 ShutdownRequest = NULL;
2219                                 PendingSignal = 0;
2220
2221                                 /* disconnect from terminal */
2222                                 disconnect(2, CurEnv);
2223                         }
2224
2225                         CurrentPid = getpid();
2226                         if (qgrp != NOQGRP)
2227                         {
2228                                 int rwgflags = RWG_NONE;
2229
2230                                 /*
2231                                 **  To run a specific queue group mark it to
2232                                 **  be run, select the work group it's in and
2233                                 **  increment the work counter.
2234                                 */
2235
2236                                 for (i = 0; i < NumQueue && Queue[i] != NULL;
2237                                      i++)
2238                                         Queue[i]->qg_nextrun = (time_t) -1;
2239                                 Queue[qgrp]->qg_nextrun = 0;
2240                                 if (Verbose)
2241                                         rwgflags |= RWG_VERBOSE;
2242                                 if (queuepersistent)
2243                                         rwgflags |= RWG_PERSISTENT;
2244                                 rwgflags |= RWG_FORCE;
2245                                 (void) run_work_group(Queue[qgrp]->qg_wgrp,
2246                                                       rwgflags);
2247                         }
2248                         else
2249                                 (void) runqueue(false, Verbose,
2250                                                 queuepersistent, true);
2251
2252                         /* set the title to make it easier to find */
2253                         sm_setproctitle(true, CurEnv, "Queue control");
2254                         (void) sm_signal(SIGCHLD, SIG_DFL);
2255                         while (CurChildren > 0)
2256                         {
2257                                 int status;
2258                                 pid_t ret;
2259
2260                                 errno = 0;
2261                                 while ((ret = sm_wait(&status)) <= 0)
2262                                 {
2263                                         if (errno == ECHILD)
2264                                         {
2265                                                 /*
2266                                                 **  Oops... something got messed
2267                                                 **  up really bad. Waiting for
2268                                                 **  non-existent children
2269                                                 **  shouldn't happen. Let's get
2270                                                 **  out of here.
2271                                                 */
2272
2273                                                 CurChildren = 0;
2274                                                 break;
2275                                         }
2276                                         continue;
2277                                 }
2278
2279                                 /* something is really really wrong */
2280                                 if (errno == ECHILD)
2281                                 {
2282                                         sm_syslog(LOG_ERR, NOQID,
2283                                                   "queue control process: lost all children: wait returned ECHILD");
2284                                         break;
2285                                 }
2286
2287                                 /* Only drop when a child gives status */
2288                                 if (WIFSTOPPED(status))
2289                                         continue;
2290
2291                                 proc_list_drop(ret, status, NULL);
2292                         }
2293                 }
2294                 finis(true, true, ExitStat);
2295                 /* NOTREACHED */
2296         }
2297
2298 # if SASL
2299         if (OpMode == MD_SMTP || OpMode == MD_DAEMON)
2300         {
2301                 /* check whether AUTH is turned off for the server */
2302                 if (!chkdaemonmodifiers(D_NOAUTH) &&
2303                     (i = sasl_server_init(srvcallbacks, "Sendmail")) != SASL_OK)
2304                         syserr("!sasl_server_init failed! [%s]",
2305                                 sasl_errstring(i, NULL, NULL));
2306         }
2307 # endif /* SASL */
2308
2309         if (OpMode == MD_SMTP)
2310         {
2311                 proc_list_add(CurrentPid, "Sendmail SMTP Agent",
2312                               PROC_DAEMON, 0, -1, NULL);
2313
2314                 /* clean up background delivery children */
2315                 (void) sm_signal(SIGCHLD, reapchild);
2316         }
2317
2318         /*
2319         **  If a daemon, wait for a request.
2320         **      getrequests will always return in a child.
2321         **      If we should also be processing the queue, start
2322         **              doing it in background.
2323         **      We check for any errors that might have happened
2324         **              during startup.
2325         */
2326
2327         if (OpMode == MD_DAEMON || QueueIntvl > 0)
2328         {
2329                 char dtype[200];
2330
2331                 /* avoid cleanup in finis(), DaemonPid will be set below */
2332                 DaemonPid = 0;
2333                 if (!run_in_foreground && !tTd(99, 100))
2334                 {
2335                         /* put us in background */
2336                         i = fork();
2337                         if (i < 0)
2338                                 syserr("daemon: cannot fork");
2339                         if (i != 0)
2340                         {
2341                                 finis(false, true, EX_OK);
2342                                 /* NOTREACHED */
2343                         }
2344
2345                         /*
2346                         **  Initialize exception stack and default exception
2347                         **  handler for child process.
2348                         */
2349
2350                         /* Reset global flags */
2351                         RestartRequest = NULL;
2352                         RestartWorkGroup = false;
2353                         ShutdownRequest = NULL;
2354                         PendingSignal = 0;
2355                         CurrentPid = getpid();
2356
2357                         sm_exc_newthread(fatal_error);
2358
2359                         /* disconnect from our controlling tty */
2360                         disconnect(2, &MainEnvelope);
2361                 }
2362
2363                 dtype[0] = '\0';
2364                 if (OpMode == MD_DAEMON)
2365                 {
2366                         (void) sm_strlcat(dtype, "+SMTP", sizeof(dtype));
2367                         DaemonPid = CurrentPid;
2368                 }
2369                 if (QueueIntvl > 0)
2370                 {
2371                         (void) sm_strlcat2(dtype,
2372                                            queuepersistent
2373                                            ? "+persistent-queueing@"
2374                                            : "+queueing@",
2375                                            pintvl(QueueIntvl, true),
2376                                            sizeof(dtype));
2377                 }
2378                 if (tTd(0, 1))
2379                         (void) sm_strlcat(dtype, "+debugging", sizeof(dtype));
2380
2381                 sm_syslog(LOG_INFO, NOQID,
2382                           "starting daemon (%s): %s", Version, dtype + 1);
2383 #if XLA
2384                 xla_create_file();
2385 #endif /* XLA */
2386
2387                 /* save daemon type in a macro for possible PidFile use */
2388                 macdefine(&BlankEnvelope.e_macro, A_TEMP,
2389                         macid("{daemon_info}"), dtype + 1);
2390
2391                 /* save queue interval in a macro for possible PidFile use */
2392                 macdefine(&MainEnvelope.e_macro, A_TEMP,
2393                         macid("{queue_interval}"), pintvl(QueueIntvl, true));
2394
2395                 /* workaround: can't seem to release the signal in the parent */
2396                 (void) sm_signal(SIGHUP, sighup);
2397                 (void) sm_releasesignal(SIGHUP);
2398                 (void) sm_signal(SIGTERM, sigterm);
2399
2400                 if (QueueIntvl > 0)
2401                 {
2402 #if _FFR_RUNPQG
2403                         if (qgrp != NOQGRP)
2404                         {
2405                                 int rwgflags = RWG_NONE;
2406
2407                                 /*
2408                                 **  To run a specific queue group mark it to
2409                                 **  be run, select the work group it's in and
2410                                 **  increment the work counter.
2411                                 */
2412
2413                                 for (i = 0; i < NumQueue && Queue[i] != NULL;
2414                                      i++)
2415                                         Queue[i]->qg_nextrun = (time_t) -1;
2416                                 Queue[qgrp]->qg_nextrun = 0;
2417                                 if (Verbose)
2418                                         rwgflags |= RWG_VERBOSE;
2419                                 if (queuepersistent)
2420                                         rwgflags |= RWG_PERSISTENT;
2421                                 rwgflags |= RWG_FORCE;
2422                                 (void) run_work_group(Queue[qgrp]->qg_wgrp,
2423                                                       rwgflags);
2424                         }
2425                         else
2426 #endif /* _FFR_RUNPQG */
2427                                 (void) runqueue(true, false, queuepersistent,
2428                                                 true);
2429
2430                         /*
2431                         **  If queuepersistent but not in daemon mode then
2432                         **  we're going to do the queue runner monitoring here.
2433                         **  If in daemon mode then the monitoring will happen
2434                         **  elsewhere.
2435                         */
2436
2437                         if (OpMode != MD_DAEMON && queuepersistent)
2438                         {
2439                                 /*
2440                                 **  Write the pid to file
2441                                 **  XXX Overwrites sendmail.pid
2442                                 */
2443
2444                                 log_sendmail_pid(&MainEnvelope);
2445
2446                                 /* set the title to make it easier to find */
2447                                 sm_setproctitle(true, CurEnv, "Queue control");
2448                                 (void) sm_signal(SIGCHLD, SIG_DFL);
2449                                 while (CurChildren > 0)
2450                                 {
2451                                         int status;
2452                                         pid_t ret;
2453                                         int group;
2454
2455                                         CHECK_RESTART;
2456                                         errno = 0;
2457                                         while ((ret = sm_wait(&status)) <= 0)
2458                                         {
2459                                                 /*
2460                                                 **  Waiting for non-existent
2461                                                 **  children shouldn't happen.
2462                                                 **  Let's get out of here if
2463                                                 **  it occurs.
2464                                                 */
2465
2466                                                 if (errno == ECHILD)
2467                                                 {
2468                                                         CurChildren = 0;
2469                                                         break;
2470                                                 }
2471                                                 continue;
2472                                         }
2473
2474                                         /* something is really really wrong */
2475                                         if (errno == ECHILD)
2476                                         {
2477                                                 sm_syslog(LOG_ERR, NOQID,
2478                                                           "persistent queue runner control process: lost all children: wait returned ECHILD");
2479                                                 break;
2480                                         }
2481
2482                                         if (WIFSTOPPED(status))
2483                                                 continue;
2484
2485                                         /* Probe only on a child status */
2486                                         proc_list_drop(ret, status, &group);
2487
2488                                         if (WIFSIGNALED(status))
2489                                         {
2490                                                 if (WCOREDUMP(status))
2491                                                 {
2492                                                         sm_syslog(LOG_ERR, NOQID,
2493                                                                   "persistent queue runner=%d core dumped, signal=%d",
2494                                                                   group, WTERMSIG(status));
2495
2496                                                         /* don't restart this */
2497                                                         mark_work_group_restart(
2498                                                                 group, -1);
2499                                                         continue;
2500                                                 }
2501
2502                                                 sm_syslog(LOG_ERR, NOQID,
2503                                                           "persistent queue runner=%d died, pid=%ld, signal=%d",
2504                                                           group, (long) ret,
2505                                                           WTERMSIG(status));
2506                                         }
2507
2508                                         /*
2509                                         **  When debugging active, don't
2510                                         **  restart the persistent queues.
2511                                         **  But do log this as info.
2512                                         */
2513
2514                                         if (sm_debug_active(&DebugNoPRestart,
2515                                                             1))
2516                                         {
2517                                                 sm_syslog(LOG_DEBUG, NOQID,
2518                                                           "persistent queue runner=%d, exited",
2519                                                           group);
2520                                                 mark_work_group_restart(group,
2521                                                                         -1);
2522                                         }
2523                                         CHECK_RESTART;
2524                                 }
2525                                 finis(true, true, ExitStat);
2526                                 /* NOTREACHED */
2527                         }
2528
2529                         if (OpMode != MD_DAEMON)
2530                         {
2531                                 char qtype[200];
2532
2533                                 /*
2534                                 **  Write the pid to file
2535                                 **  XXX Overwrites sendmail.pid
2536                                 */
2537
2538                                 log_sendmail_pid(&MainEnvelope);
2539
2540                                 /* set the title to make it easier to find */
2541                                 qtype[0] = '\0';
2542                                 (void) sm_strlcpyn(qtype, sizeof(qtype), 4,
2543                                                    "Queue runner@",
2544                                                    pintvl(QueueIntvl, true),
2545                                                    " for ",
2546                                                    QueueDir);
2547                                 sm_setproctitle(true, CurEnv, qtype);
2548                                 for (;;)
2549                                 {
2550                                         (void) pause();
2551
2552                                         CHECK_RESTART;
2553
2554                                         if (doqueuerun())
2555                                                 (void) runqueue(true, false,
2556                                                                 false, false);
2557                                 }
2558                         }
2559                 }
2560                 (void) dropenvelope(&MainEnvelope, true, false);
2561
2562 #if STARTTLS
2563                 /* init TLS for server, ignore result for now */
2564                 (void) initsrvtls(tls_ok);
2565 #endif /* STARTTLS */
2566
2567         nextreq:
2568                 p_flags = getrequests(&MainEnvelope);
2569
2570                 /* drop privileges */
2571                 (void) drop_privileges(false);
2572
2573                 /*
2574                 **  Get authentication data
2575                 **  Set _ macro in BlankEnvelope before calling newenvelope().
2576                 */
2577
2578 #if _FFR_XCNCT
2579                 if (bitnset(D_XCNCT, *p_flags) || bitnset(D_XCNCT_M, *p_flags))
2580                 {
2581                         /* copied from getauthinfo() */
2582                         if (RealHostName == NULL)
2583                         {
2584                                 RealHostName = newstr(hostnamebyanyaddr(&RealHostAddr));
2585                                 if (strlen(RealHostName) > MAXNAME)
2586                                         RealHostName[MAXNAME] = '\0'; /* XXX - 1 ? */
2587                         }
2588                         snprintf(buf, sizeof(buf), "%s [%s]",
2589                                 RealHostName, anynet_ntoa(&RealHostAddr));
2590
2591                         forged = bitnset(D_XCNCT_M, *p_flags);
2592                         if (forged)
2593                         {
2594                                 (void) sm_strlcat(buf, " (may be forged)",
2595                                                 sizeof(buf));
2596                                 macdefine(&BlankEnvelope.e_macro, A_PERM,
2597                                           macid("{client_resolve}"), "FORGED");
2598                         }
2599
2600                         /* HACK! variable used only two times right below */
2601                         authinfo = buf;
2602                         if (tTd(75, 9))
2603                                 sm_syslog(LOG_INFO, NOQID,
2604                                         "main: where=not_calling_getauthinfo, RealHostAddr=%s",
2605                                         anynet_ntoa(&RealHostAddr));
2606                 }
2607                 else
2608                 /* WARNING: "non-braced" else */
2609 #endif /* _FFR_XCNCT */
2610                 authinfo = getauthinfo(sm_io_getinfo(InChannel, SM_IO_WHAT_FD,
2611                                                      NULL), &forged);
2612                 macdefine(&BlankEnvelope.e_macro, A_TEMP, '_', authinfo);
2613                 if (tTd(75, 9))
2614                         sm_syslog(LOG_INFO, NOQID,
2615                                 "main: where=after_getauthinfo, RealHostAddr=%s",
2616                                 anynet_ntoa(&RealHostAddr));
2617
2618                 /* at this point we are in a child: reset state */
2619                 sm_rpool_free(MainEnvelope.e_rpool);
2620                 (void) newenvelope(&MainEnvelope, &MainEnvelope,
2621                                    sm_rpool_new_x(NULL));
2622         }
2623
2624         if (LogLevel > 9)
2625         {
2626                 /* log connection information */
2627                 sm_syslog(LOG_INFO, NULL, "connect from %s", authinfo);
2628         }
2629
2630         /*
2631         **  If running SMTP protocol, start collecting and executing
2632         **  commands.  This will never return.
2633         */
2634
2635         if (OpMode == MD_SMTP || OpMode == MD_DAEMON)
2636         {
2637                 char pbuf[20];
2638
2639                 /*
2640                 **  Save some macros for check_* rulesets.
2641                 */
2642
2643                 if (forged)
2644                 {
2645                         char ipbuf[103];
2646
2647                         (void) sm_snprintf(ipbuf, sizeof(ipbuf), "[%.100s]",
2648                                            anynet_ntoa(&RealHostAddr));
2649                         macdefine(&BlankEnvelope.e_macro, A_TEMP,
2650                                   macid("{client_name}"), ipbuf);
2651                 }
2652                 else
2653                         macdefine(&BlankEnvelope.e_macro, A_PERM,
2654                                   macid("{client_name}"), RealHostName);
2655                 macdefine(&BlankEnvelope.e_macro, A_PERM,
2656                           macid("{client_ptr}"), RealHostName);
2657                 macdefine(&BlankEnvelope.e_macro, A_TEMP,
2658                           macid("{client_addr}"), anynet_ntoa(&RealHostAddr));
2659                 sm_getla();
2660
2661                 switch (RealHostAddr.sa.sa_family)
2662                 {
2663 #if NETINET
2664                   case AF_INET:
2665                         (void) sm_snprintf(pbuf, sizeof(pbuf), "%d",
2666                                            ntohs(RealHostAddr.sin.sin_port));
2667                         break;
2668 #endif /* NETINET */
2669 #if NETINET6
2670                   case AF_INET6:
2671                         (void) sm_snprintf(pbuf, sizeof(pbuf), "%d",
2672                                            ntohs(RealHostAddr.sin6.sin6_port));
2673                         break;
2674 #endif /* NETINET6 */
2675                   default:
2676                         (void) sm_snprintf(pbuf, sizeof(pbuf), "0");
2677                         break;
2678                 }
2679                 macdefine(&BlankEnvelope.e_macro, A_TEMP,
2680                         macid("{client_port}"), pbuf);
2681
2682                 if (OpMode == MD_DAEMON)
2683                 {
2684                         ENVELOPE *saved_env;
2685
2686                         /* validate the connection */
2687                         HoldErrs = true;
2688                         saved_env = CurEnv;
2689                         CurEnv = &BlankEnvelope;
2690                         nullserver = validate_connection(&RealHostAddr,
2691                                                 macvalue(macid("{client_name}"),
2692                                                         &BlankEnvelope),
2693                                                 &BlankEnvelope);
2694                         if (bitset(EF_DISCARD, BlankEnvelope.e_flags))
2695                                 MainEnvelope.e_flags |= EF_DISCARD;
2696                         CurEnv = saved_env;
2697                         HoldErrs = false;
2698                 }
2699                 else if (p_flags == NULL)
2700                 {
2701                         p_flags = (BITMAP256 *) xalloc(sizeof(*p_flags));
2702                         clrbitmap(p_flags);
2703                 }
2704 #if STARTTLS
2705                 if (OpMode == MD_SMTP)
2706                         (void) initsrvtls(tls_ok);
2707 #endif /* STARTTLS */
2708
2709                 /* turn off profiling */
2710                 SM_PROF(1);
2711                 smtp(nullserver, *p_flags, &MainEnvelope);
2712
2713                 if (tTd(93, 100))
2714                 {
2715                         /* turn off profiling */
2716                         SM_PROF(0);
2717                         if (OpMode == MD_DAEMON)
2718                                 goto nextreq;
2719                 }
2720         }
2721
2722         sm_rpool_free(MainEnvelope.e_rpool);
2723         clearenvelope(&MainEnvelope, false, sm_rpool_new_x(NULL));
2724         if (OpMode == MD_VERIFY)
2725         {
2726                 set_delivery_mode(SM_VERIFY, &MainEnvelope);
2727                 PostMasterCopy = NULL;
2728         }
2729         else
2730         {
2731                 /* interactive -- all errors are global */
2732                 MainEnvelope.e_flags |= EF_GLOBALERRS|EF_LOGSENDER;
2733         }
2734
2735         /*
2736         **  Do basic system initialization and set the sender
2737         */
2738
2739         initsys(&MainEnvelope);
2740         macdefine(&MainEnvelope.e_macro, A_PERM, macid("{ntries}"), "0");
2741         macdefine(&MainEnvelope.e_macro, A_PERM, macid("{nrcpts}"), "0");
2742         setsender(from, &MainEnvelope, NULL, '\0', false);
2743         if (warn_f_flag != '\0' && !wordinclass(RealUserName, 't') &&
2744             (!bitnset(M_LOCALMAILER, MainEnvelope.e_from.q_mailer->m_flags) ||
2745              strcmp(MainEnvelope.e_from.q_user, RealUserName) != 0))
2746         {
2747                 auth_warning(&MainEnvelope, "%s set sender to %s using -%c",
2748                              RealUserName, from, warn_f_flag);
2749 #if SASL
2750                 auth = false;
2751 #endif /* SASL */
2752         }
2753         if (auth)
2754         {
2755                 char *fv;
2756
2757                 /* set the initial sender for AUTH= to $f@$j */
2758                 fv = macvalue('f', &MainEnvelope);
2759                 if (fv == NULL || *fv == '\0')
2760                         MainEnvelope.e_auth_param = NULL;
2761                 else
2762                 {
2763                         if (strchr(fv, '@') == NULL)
2764                         {
2765                                 i = strlen(fv) + strlen(macvalue('j',
2766                                                         &MainEnvelope)) + 2;
2767                                 p = sm_malloc_x(i);
2768                                 (void) sm_strlcpyn(p, i, 3, fv, "@",
2769                                                    macvalue('j',
2770                                                             &MainEnvelope));
2771                         }
2772                         else
2773                                 p = sm_strdup_x(fv);
2774                         MainEnvelope.e_auth_param = sm_rpool_strdup_x(MainEnvelope.e_rpool,
2775                                                                       xtextify(p, "="));
2776                         sm_free(p);  /* XXX */
2777                 }
2778         }
2779         if (macvalue('s', &MainEnvelope) == NULL)
2780                 macdefine(&MainEnvelope.e_macro, A_PERM, 's', RealHostName);
2781
2782         av = argv + optind;
2783         if (*av == NULL && !GrabTo)
2784         {
2785                 MainEnvelope.e_to = NULL;
2786                 MainEnvelope.e_flags |= EF_GLOBALERRS;
2787                 HoldErrs = false;
2788                 SuperSafe = SAFE_NO;
2789                 usrerr("Recipient names must be specified");
2790
2791                 /* collect body for UUCP return */
2792                 if (OpMode != MD_VERIFY)
2793                         collect(InChannel, false, NULL, &MainEnvelope, true);
2794                 finis(true, true, EX_USAGE);
2795                 /* NOTREACHED */
2796         }
2797
2798         /*
2799         **  Scan argv and deliver the message to everyone.
2800         */
2801
2802         save_val = LogUsrErrs;
2803         LogUsrErrs = true;
2804         sendtoargv(av, &MainEnvelope);
2805         LogUsrErrs = save_val;
2806
2807         /* if we have had errors sofar, arrange a meaningful exit stat */
2808         if (Errors > 0 && ExitStat == EX_OK)
2809                 ExitStat = EX_USAGE;
2810
2811 #if _FFR_FIX_DASHT
2812         /*
2813         **  If using -t, force not sending to argv recipients, even
2814         **  if they are mentioned in the headers.
2815         */
2816
2817         if (GrabTo)
2818         {
2819                 ADDRESS *q;
2820
2821                 for (q = MainEnvelope.e_sendqueue; q != NULL; q = q->q_next)
2822                         q->q_state = QS_REMOVED;
2823         }
2824 #endif /* _FFR_FIX_DASHT */
2825
2826         /*
2827         **  Read the input mail.
2828         */
2829
2830         MainEnvelope.e_to = NULL;
2831         if (OpMode != MD_VERIFY || GrabTo)
2832         {
2833                 int savederrors;
2834                 unsigned long savedflags;
2835
2836                 /*
2837                 **  workaround for compiler warning on Irix:
2838                 **  do not initialize variable in the definition, but
2839                 **  later on:
2840                 **  warning(1548): transfer of control bypasses
2841                 **  initialization of:
2842                 **  variable "savederrors" (declared at line 2570)
2843                 **  variable "savedflags" (declared at line 2571)
2844                 **  goto giveup;
2845                 */
2846
2847                 savederrors = Errors;
2848                 savedflags = MainEnvelope.e_flags & EF_FATALERRS;
2849                 MainEnvelope.e_flags |= EF_GLOBALERRS;
2850                 MainEnvelope.e_flags &= ~EF_FATALERRS;
2851                 Errors = 0;
2852                 buffer_errors();
2853                 collect(InChannel, false, NULL, &MainEnvelope, true);
2854
2855                 /* header checks failed */
2856                 if (Errors > 0)
2857                 {
2858   giveup:
2859                         if (!GrabTo)
2860                         {
2861                                 /* Log who the mail would have gone to */
2862                                 logundelrcpts(&MainEnvelope,
2863                                               MainEnvelope.e_message,
2864                                               8, false);
2865                         }
2866                         flush_errors(true);
2867                         finis(true, true, ExitStat);
2868                         /* NOTREACHED */
2869                         return -1;
2870                 }
2871
2872                 /* bail out if message too large */
2873                 if (bitset(EF_CLRQUEUE, MainEnvelope.e_flags))
2874                 {
2875                         finis(true, true, ExitStat != EX_OK ? ExitStat
2876                                                             : EX_DATAERR);
2877                         /* NOTREACHED */
2878                         return -1;
2879                 }
2880
2881                 /* set message size */
2882                 (void) sm_snprintf(buf, sizeof(buf), "%ld",
2883                                    PRT_NONNEGL(MainEnvelope.e_msgsize));
2884                 macdefine(&MainEnvelope.e_macro, A_TEMP,
2885                           macid("{msg_size}"), buf);
2886
2887                 Errors = savederrors;
2888                 MainEnvelope.e_flags |= savedflags;
2889         }
2890         errno = 0;
2891
2892         if (tTd(1, 1))
2893                 sm_dprintf("From person = \"%s\"\n",
2894                            MainEnvelope.e_from.q_paddr);
2895
2896         /* Check if quarantining stats should be updated */
2897         if (MainEnvelope.e_quarmsg != NULL)
2898                 markstats(&MainEnvelope, NULL, STATS_QUARANTINE);
2899
2900         /*
2901         **  Actually send everything.
2902         **      If verifying, just ack.
2903         */
2904
2905         if (Errors == 0)
2906         {
2907                 if (!split_by_recipient(&MainEnvelope) &&
2908                     bitset(EF_FATALERRS, MainEnvelope.e_flags))
2909                         goto giveup;
2910         }
2911
2912         /* make sure we deliver at least the first envelope */
2913         i = FastSplit > 0 ? 0 : -1;
2914         for (e = &MainEnvelope; e != NULL; e = e->e_sibling, i++)
2915         {
2916                 ENVELOPE *next;
2917
2918                 e->e_from.q_state = QS_SENDER;
2919                 if (tTd(1, 5))
2920                 {
2921                         sm_dprintf("main[%d]: QS_SENDER ", i);
2922                         printaddr(sm_debug_file(), &e->e_from, false);
2923                 }
2924                 e->e_to = NULL;
2925                 sm_getla();
2926                 GrabTo = false;
2927 #if NAMED_BIND
2928                 _res.retry = TimeOuts.res_retry[RES_TO_FIRST];
2929                 _res.retrans = TimeOuts.res_retrans[RES_TO_FIRST];
2930 #endif /* NAMED_BIND */
2931                 next = e->e_sibling;
2932                 e->e_sibling = NULL;
2933
2934                 /* after FastSplit envelopes: queue up */
2935                 sendall(e, i >= FastSplit ? SM_QUEUE : SM_DEFAULT);
2936                 e->e_sibling = next;
2937         }
2938
2939         /*
2940         **  All done.
2941         **      Don't send return error message if in VERIFY mode.
2942         */
2943
2944         finis(true, true, ExitStat);
2945         /* NOTREACHED */
2946         return ExitStat;
2947 }
2948 /*
2949 **  STOP_SENDMAIL -- Stop the running program
2950 **
2951 **      Parameters:
2952 **              none.
2953 **
2954 **      Returns:
2955 **              none.
2956 **
2957 **      Side Effects:
2958 **              exits.
2959 */
2960
2961 void
2962 stop_sendmail()
2963 {
2964         /* reset uid for process accounting */
2965         endpwent();
2966         (void) setuid(RealUid);
2967         exit(EX_OK);
2968 }
2969 /*
2970 **  FINIS -- Clean up and exit.
2971 **
2972 **      Parameters:
2973 **              drop -- whether or not to drop CurEnv envelope
2974 **              cleanup -- call exit() or _exit()?
2975 **              exitstat -- exit status to use for exit() call
2976 **
2977 **      Returns:
2978 **              never
2979 **
2980 **      Side Effects:
2981 **              exits sendmail
2982 */
2983
2984 void
2985 finis(drop, cleanup, exitstat)
2986         bool drop;
2987         bool cleanup;
2988         volatile int exitstat;
2989 {
2990         char pidpath[MAXPATHLEN];
2991         pid_t pid;
2992
2993         /* Still want to process new timeouts added below */
2994         sm_clear_events();
2995         (void) sm_releasesignal(SIGALRM);
2996
2997         if (tTd(2, 1))
2998         {
2999                 sm_dprintf("\n====finis: stat %d e_id=%s e_flags=",
3000                            exitstat,
3001                            CurEnv->e_id == NULL ? "NOQUEUE" : CurEnv->e_id);
3002                 printenvflags(CurEnv);
3003         }
3004         if (tTd(2, 9))
3005                 printopenfds(false);
3006
3007         SM_TRY
3008                 /*
3009                 **  Clean up.  This might raise E:mta.quickabort
3010                 */
3011
3012                 /* clean up temp files */
3013                 CurEnv->e_to = NULL;
3014                 if (drop)
3015                 {
3016                         if (CurEnv->e_id != NULL)
3017                         {
3018                                 int r;
3019
3020                                 r = dropenvelope(CurEnv, true, false);
3021                                 if (exitstat == EX_OK)
3022                                         exitstat = r;
3023                                 sm_rpool_free(CurEnv->e_rpool);
3024                                 CurEnv->e_rpool = NULL;
3025
3026                                 /* these may have pointed to the rpool */
3027                                 CurEnv->e_to = NULL;
3028                                 CurEnv->e_message = NULL;
3029                                 CurEnv->e_statmsg = NULL;
3030                                 CurEnv->e_quarmsg = NULL;
3031                                 CurEnv->e_bodytype = NULL;
3032                                 CurEnv->e_id = NULL;
3033                                 CurEnv->e_envid = NULL;
3034                                 CurEnv->e_auth_param = NULL;
3035                         }
3036                         else
3037                                 poststats(StatFile);
3038                 }
3039
3040                 /* flush any cached connections */
3041                 mci_flush(true, NULL);
3042
3043                 /* close maps belonging to this pid */
3044                 closemaps(false);
3045
3046 #if USERDB
3047                 /* close UserDatabase */
3048                 _udbx_close();
3049 #endif /* USERDB */
3050
3051 #if SASL
3052                 stop_sasl_client();
3053 #endif /* SASL */
3054
3055 #if XLA
3056                 /* clean up extended load average stuff */
3057                 xla_all_end();
3058 #endif /* XLA */
3059
3060         SM_FINALLY
3061                 /*
3062                 **  And exit.
3063                 */
3064
3065                 if (LogLevel > 78)
3066                         sm_syslog(LOG_DEBUG, CurEnv->e_id, "finis, pid=%d",
3067                                   (int) CurrentPid);
3068                 if (exitstat == EX_TEMPFAIL ||
3069                     CurEnv->e_errormode == EM_BERKNET)
3070                         exitstat = EX_OK;
3071
3072                 /* XXX clean up queues and related data structures */
3073                 cleanup_queues();
3074                 pid = getpid();
3075 #if SM_CONF_SHM
3076                 cleanup_shm(DaemonPid == pid);
3077 #endif /* SM_CONF_SHM */
3078
3079                 /* close locked pid file */
3080                 close_sendmail_pid();
3081
3082                 if (DaemonPid == pid || PidFilePid == pid)
3083                 {
3084                         /* blow away the pid file */
3085                         expand(PidFile, pidpath, sizeof(pidpath), CurEnv);
3086                         (void) unlink(pidpath);
3087                 }
3088
3089                 /* reset uid for process accounting */
3090                 endpwent();
3091                 sm_mbdb_terminate();
3092 #if _FFR_MEMSTAT
3093                 (void) sm_memstat_close();
3094 #endif /* _FFR_MEMSTAT */
3095                 (void) setuid(RealUid);
3096 #if SM_HEAP_CHECK
3097                 /* dump the heap, if we are checking for memory leaks */
3098                 if (sm_debug_active(&SmHeapCheck, 2))
3099                         sm_heap_report(smioout,
3100                                        sm_debug_level(&SmHeapCheck) - 1);
3101 #endif /* SM_HEAP_CHECK */
3102                 if (sm_debug_active(&SmXtrapReport, 1))
3103                         sm_dprintf("xtrap count = %d\n", SmXtrapCount);
3104                 if (cleanup)
3105                         exit(exitstat);
3106                 else
3107                         _exit(exitstat);
3108         SM_END_TRY
3109 }
3110 /*
3111 **  INTINDEBUG -- signal handler for SIGINT in -bt mode
3112 **
3113 **      Parameters:
3114 **              sig -- incoming signal.
3115 **
3116 **      Returns:
3117 **              none.
3118 **
3119 **      Side Effects:
3120 **              longjmps back to test mode loop.
3121 **
3122 **      NOTE:   THIS CAN BE CALLED FROM A SIGNAL HANDLER.  DO NOT ADD
3123 **              ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
3124 **              DOING.
3125 */
3126
3127 /* Type of an exception generated on SIGINT during address test mode.  */
3128 static const SM_EXC_TYPE_T EtypeInterrupt =
3129 {
3130         SmExcTypeMagic,
3131         "S:mta.interrupt",
3132         "",
3133         sm_etype_printf,
3134         "interrupt",
3135 };
3136
3137 /* ARGSUSED */
3138 static SIGFUNC_DECL
3139 intindebug(sig)
3140         int sig;
3141 {
3142         int save_errno = errno;
3143
3144         FIX_SYSV_SIGNAL(sig, intindebug);
3145         errno = save_errno;
3146         CHECK_CRITICAL(sig);
3147         errno = save_errno;
3148         sm_exc_raisenew_x(&EtypeInterrupt);
3149         errno = save_errno;
3150         return SIGFUNC_RETURN;
3151 }
3152 /*
3153 **  SIGTERM -- SIGTERM handler for the daemon
3154 **
3155 **      Parameters:
3156 **              sig -- signal number.
3157 **
3158 **      Returns:
3159 **              none.
3160 **
3161 **      Side Effects:
3162 **              Sets ShutdownRequest which will hopefully trigger
3163 **              the daemon to exit.
3164 **
3165 **      NOTE:   THIS CAN BE CALLED FROM A SIGNAL HANDLER.  DO NOT ADD
3166 **              ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
3167 **              DOING.
3168 */
3169
3170 /* ARGSUSED */
3171 static SIGFUNC_DECL
3172 sigterm(sig)
3173         int sig;
3174 {
3175         int save_errno = errno;
3176
3177         FIX_SYSV_SIGNAL(sig, sigterm);
3178         ShutdownRequest = "signal";
3179         errno = save_errno;
3180         return SIGFUNC_RETURN;
3181 }
3182 /*
3183 **  SIGHUP -- handle a SIGHUP signal
3184 **
3185 **      Parameters:
3186 **              sig -- incoming signal.
3187 **
3188 **      Returns:
3189 **              none.
3190 **
3191 **      Side Effects:
3192 **              Sets RestartRequest which should cause the daemon
3193 **              to restart.
3194 **
3195 **      NOTE:   THIS CAN BE CALLED FROM A SIGNAL HANDLER.  DO NOT ADD
3196 **              ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
3197 **              DOING.
3198 */
3199
3200 /* ARGSUSED */
3201 static SIGFUNC_DECL
3202 sighup(sig)
3203         int sig;
3204 {
3205         int save_errno = errno;
3206
3207         FIX_SYSV_SIGNAL(sig, sighup);
3208         RestartRequest = "signal";
3209         errno = save_errno;
3210         return SIGFUNC_RETURN;
3211 }
3212 /*
3213 **  SIGPIPE -- signal handler for SIGPIPE
3214 **
3215 **      Parameters:
3216 **              sig -- incoming signal.
3217 **
3218 **      Returns:
3219 **              none.
3220 **
3221 **      Side Effects:
3222 **              Sets StopRequest which should cause the mailq/hoststatus
3223 **              display to stop.
3224 **
3225 **      NOTE:   THIS CAN BE CALLED FROM A SIGNAL HANDLER.  DO NOT ADD
3226 **              ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
3227 **              DOING.
3228 */
3229
3230 /* ARGSUSED */
3231 static SIGFUNC_DECL
3232 sigpipe(sig)
3233         int sig;
3234 {
3235         int save_errno = errno;
3236
3237         FIX_SYSV_SIGNAL(sig, sigpipe);
3238         StopRequest = true;
3239         errno = save_errno;
3240         return SIGFUNC_RETURN;
3241 }
3242 /*
3243 **  INTSIG -- clean up on interrupt
3244 **
3245 **      This just arranges to exit.  It pessimizes in that it
3246 **      may resend a message.
3247 **
3248 **      Parameters:
3249 **              sig -- incoming signal.
3250 **
3251 **      Returns:
3252 **              none.
3253 **
3254 **      Side Effects:
3255 **              Unlocks the current job.
3256 **
3257 **      NOTE:   THIS CAN BE CALLED FROM A SIGNAL HANDLER.  DO NOT ADD
3258 **              ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
3259 **              DOING.
3260 */
3261
3262 /* ARGSUSED */
3263 SIGFUNC_DECL
3264 intsig(sig)
3265         int sig;
3266 {
3267         bool drop = false;
3268         int save_errno = errno;
3269
3270         FIX_SYSV_SIGNAL(sig, intsig);
3271         errno = save_errno;
3272         CHECK_CRITICAL(sig);
3273         sm_allsignals(true);
3274         IntSig = true;
3275
3276         FileName = NULL;
3277
3278         /* Clean-up on aborted stdin message submission */
3279         if  (OpMode == MD_SMTP ||
3280              OpMode == MD_DELIVER ||
3281              OpMode == MD_ARPAFTP)
3282         {
3283                 if (CurEnv->e_id != NULL)
3284                 {
3285                         char *fn;
3286
3287                         fn = queuename(CurEnv, DATAFL_LETTER);
3288                         if (fn != NULL)
3289                                 (void) unlink(fn);
3290                         fn = queuename(CurEnv, ANYQFL_LETTER);
3291                         if (fn != NULL)
3292                                 (void) unlink(fn);
3293                 }
3294                 _exit(EX_OK);
3295                 /* NOTREACHED */
3296         }
3297
3298         if (sig != 0 && LogLevel > 79)
3299                 sm_syslog(LOG_DEBUG, CurEnv->e_id, "interrupt");
3300         if (OpMode != MD_TEST)
3301                 unlockqueue(CurEnv);
3302
3303         finis(drop, false, EX_OK);
3304         /* NOTREACHED */
3305 }
3306 /*
3307 **  DISCONNECT -- remove our connection with any foreground process
3308 **
3309 **      Parameters:
3310 **              droplev -- how "deeply" we should drop the line.
3311 **                      0 -- ignore signals, mail back errors, make sure
3312 **                           output goes to stdout.
3313 **                      1 -- also, make stdout go to /dev/null.
3314 **                      2 -- also, disconnect from controlling terminal
3315 **                           (only for daemon mode).
3316 **              e -- the current envelope.
3317 **
3318 **      Returns:
3319 **              none
3320 **
3321 **      Side Effects:
3322 **              Trys to insure that we are immune to vagaries of
3323 **              the controlling tty.
3324 */
3325
3326 void
3327 disconnect(droplev, e)
3328         int droplev;
3329         register ENVELOPE *e;
3330 {
3331         int fd;
3332
3333         if (tTd(52, 1))
3334                 sm_dprintf("disconnect: In %d Out %d, e=%p\n",
3335                            sm_io_getinfo(InChannel, SM_IO_WHAT_FD, NULL),
3336                            sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL), e);
3337         if (tTd(52, 100))
3338         {
3339                 sm_dprintf("don't\n");
3340                 return;
3341         }
3342         if (LogLevel > 93)
3343                 sm_syslog(LOG_DEBUG, e->e_id,
3344                           "disconnect level %d",
3345                           droplev);
3346
3347         /* be sure we don't get nasty signals */
3348         (void) sm_signal(SIGINT, SIG_IGN);
3349         (void) sm_signal(SIGQUIT, SIG_IGN);
3350
3351         /* we can't communicate with our caller, so.... */
3352         HoldErrs = true;
3353         CurEnv->e_errormode = EM_MAIL;
3354         Verbose = 0;
3355         DisConnected = true;
3356
3357         /* all input from /dev/null */
3358         if (InChannel != smioin)
3359         {
3360                 (void) sm_io_close(InChannel, SM_TIME_DEFAULT);
3361                 InChannel = smioin;
3362         }
3363         if (sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL,
3364                          SM_IO_RDONLY, NULL, smioin) == NULL)
3365                 sm_syslog(LOG_ERR, e->e_id,
3366                           "disconnect: sm_io_reopen(\"%s\") failed: %s",
3367                           SM_PATH_DEVNULL, sm_errstring(errno));
3368
3369         /*
3370         **  output to the transcript
3371         **      We also compare the fd numbers here since OutChannel
3372         **      might be a layer on top of smioout due to encryption
3373         **      (see sfsasl.c).
3374         */
3375
3376         if (OutChannel != smioout &&
3377             sm_io_getinfo(OutChannel, SM_IO_WHAT_FD, NULL) !=
3378             sm_io_getinfo(smioout, SM_IO_WHAT_FD, NULL))
3379         {
3380                 (void) sm_io_close(OutChannel, SM_TIME_DEFAULT);
3381                 OutChannel = smioout;
3382
3383 #if 0
3384                 /*
3385                 **  Has smioout been closed? Reopen it.
3386                 **      This shouldn't happen anymore, the code is here
3387                 **      just as a reminder.
3388                 */
3389
3390                 if (smioout->sm_magic == NULL &&
3391                     sm_io_reopen(SmFtStdio, SM_TIME_DEFAULT, SM_PATH_DEVNULL,
3392                                  SM_IO_WRONLY, NULL, smioout) == NULL)
3393                         sm_syslog(LOG_ERR, e->e_id,
3394                                   "disconnect: sm_io_reopen(\"%s\") failed: %s",
3395                                   SM_PATH_DEVNULL, sm_errstring(errno));
3396 #endif /* 0 */
3397         }
3398         if (droplev > 0)
3399         {
3400                 fd = open(SM_PATH_DEVNULL, O_WRONLY, 0666);
3401                 if (fd == -1)
3402                 {
3403                         sm_syslog(LOG_ERR, e->e_id,
3404                                   "disconnect: open(\"%s\") failed: %s",
3405                                   SM_PATH_DEVNULL, sm_errstring(errno));
3406                 }
3407                 (void) sm_io_flush(smioout, SM_TIME_DEFAULT);
3408                 if (fd >= 0)
3409                 {
3410                         (void) dup2(fd, STDOUT_FILENO);
3411                         (void) dup2(fd, STDERR_FILENO);
3412                         (void) close(fd);
3413                 }
3414         }
3415
3416         /* drop our controlling TTY completely if possible */
3417         if (droplev > 1)
3418         {
3419                 (void) setsid();
3420                 errno = 0;
3421         }
3422
3423 #if XDEBUG
3424         checkfd012("disconnect");
3425 #endif /* XDEBUG */
3426
3427         if (LogLevel > 71)
3428                 sm_syslog(LOG_DEBUG, e->e_id, "in background, pid=%d",
3429                           (int) CurrentPid);
3430
3431         errno = 0;
3432 }
3433
3434 static void
3435 obsolete(argv)
3436         char *argv[];
3437 {
3438         register char *ap;
3439         register char *op;
3440
3441         while ((ap = *++argv) != NULL)
3442         {
3443                 /* Return if "--" or not an option of any form. */
3444                 if (ap[0] != '-' || ap[1] == '-')
3445                         return;
3446
3447                 /* Don't allow users to use "-Q." or "-Q ." */
3448                 if ((ap[1] == 'Q' && ap[2] == '.') ||
3449                     (ap[1] == 'Q' && argv[1] != NULL &&
3450                      argv[1][0] == '.' && argv[1][1] == '\0'))
3451                 {
3452                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
3453                                              "Can not use -Q.\n");
3454                         exit(EX_USAGE);
3455                 }
3456
3457                 /* skip over options that do have a value */
3458                 op = strchr(OPTIONS, ap[1]);
3459                 if (op != NULL && *++op == ':' && ap[2] == '\0' &&
3460                     ap[1] != 'd' &&
3461 #if defined(sony_news)
3462                     ap[1] != 'E' && ap[1] != 'J' &&
3463 #endif /* defined(sony_news) */
3464                     argv[1] != NULL && argv[1][0] != '-')
3465                 {
3466                         argv++;
3467                         continue;
3468                 }
3469
3470                 /* If -C doesn't have an argument, use sendmail.cf. */
3471 #define __DEFPATH       "sendmail.cf"
3472                 if (ap[1] == 'C' && ap[2] == '\0')
3473                 {
3474                         *argv = xalloc(sizeof(__DEFPATH) + 2);
3475                         (void) sm_strlcpyn(argv[0], sizeof(__DEFPATH) + 2, 2,
3476                                            "-C", __DEFPATH);
3477                 }
3478
3479                 /* If -q doesn't have an argument, run it once. */
3480                 if (ap[1] == 'q' && ap[2] == '\0')
3481                         *argv = "-q0";
3482
3483                 /* If -Q doesn't have an argument, disable quarantining */
3484                 if (ap[1] == 'Q' && ap[2] == '\0')
3485                         *argv = "-Q.";
3486
3487                 /* if -d doesn't have an argument, use 0-99.1 */
3488                 if (ap[1] == 'd' && ap[2] == '\0')
3489                         *argv = "-d0-99.1";
3490
3491 #if defined(sony_news)
3492                 /* if -E doesn't have an argument, use -EC */
3493                 if (ap[1] == 'E' && ap[2] == '\0')
3494                         *argv = "-EC";
3495
3496                 /* if -J doesn't have an argument, use -JJ */
3497                 if (ap[1] == 'J' && ap[2] == '\0')
3498                         *argv = "-JJ";
3499 #endif /* defined(sony_news) */
3500         }
3501 }
3502 /*
3503 **  AUTH_WARNING -- specify authorization warning
3504 **
3505 **      Parameters:
3506 **              e -- the current envelope.
3507 **              msg -- the text of the message.
3508 **              args -- arguments to the message.
3509 **
3510 **      Returns:
3511 **              none.
3512 */
3513
3514 void
3515 #ifdef __STDC__
3516 auth_warning(register ENVELOPE *e, const char *msg, ...)
3517 #else /* __STDC__ */
3518 auth_warning(e, msg, va_alist)
3519         register ENVELOPE *e;
3520         const char *msg;
3521         va_dcl
3522 #endif /* __STDC__ */
3523 {
3524         char buf[MAXLINE];
3525         SM_VA_LOCAL_DECL
3526
3527         if (bitset(PRIV_AUTHWARNINGS, PrivacyFlags))
3528         {
3529                 register char *p;
3530                 static char hostbuf[48];
3531
3532                 if (hostbuf[0] == '\0')
3533                 {
3534                         struct hostent *hp;
3535
3536                         hp = myhostname(hostbuf, sizeof(hostbuf));
3537 #if NETINET6
3538                         if (hp != NULL)
3539                         {
3540                                 freehostent(hp);
3541                                 hp = NULL;
3542                         }
3543 #endif /* NETINET6 */
3544                 }
3545
3546                 (void) sm_strlcpyn(buf, sizeof(buf), 2, hostbuf, ": ");
3547                 p = &buf[strlen(buf)];
3548                 SM_VA_START(ap, msg);
3549                 (void) sm_vsnprintf(p, SPACELEFT(buf, p), msg, ap);
3550                 SM_VA_END(ap);
3551                 addheader("X-Authentication-Warning", buf, 0, e, true);
3552                 if (LogLevel > 3)
3553                         sm_syslog(LOG_INFO, e->e_id,
3554                                   "Authentication-Warning: %.400s",
3555                                   buf);
3556         }
3557 }
3558 /*
3559 **  GETEXTENV -- get from external environment
3560 **
3561 **      Parameters:
3562 **              envar -- the name of the variable to retrieve
3563 **
3564 **      Returns:
3565 **              The value, if any.
3566 */
3567
3568 static char *
3569 getextenv(envar)
3570         const char *envar;
3571 {
3572         char **envp;
3573         int l;
3574
3575         l = strlen(envar);
3576         for (envp = ExternalEnviron; envp != NULL && *envp != NULL; envp++)
3577         {
3578                 if (strncmp(*envp, envar, l) == 0 && (*envp)[l] == '=')
3579                         return &(*envp)[l + 1];
3580         }
3581         return NULL;
3582 }
3583 /*
3584 **  SM_SETUSERENV -- set an environment variable in the propagated environment
3585 **
3586 **      Parameters:
3587 **              envar -- the name of the environment variable.
3588 **              value -- the value to which it should be set.  If
3589 **                      null, this is extracted from the incoming
3590 **                      environment.  If that is not set, the call
3591 **                      to sm_setuserenv is ignored.
3592 **
3593 **      Returns:
3594 **              none.
3595 */
3596
3597 void
3598 sm_setuserenv(envar, value)
3599         const char *envar;
3600         const char *value;
3601 {
3602         int i, l;
3603         char **evp = UserEnviron;
3604         char *p;
3605
3606         if (value == NULL)
3607         {
3608                 value = getextenv(envar);
3609                 if (value == NULL)
3610                         return;
3611         }
3612
3613         /* XXX enforce reasonable size? */
3614         i = strlen(envar) + 1;
3615         l = strlen(value) + i + 1;
3616         p = (char *) xalloc(l);
3617         (void) sm_strlcpyn(p, l, 3, envar, "=", value);
3618
3619         while (*evp != NULL && strncmp(*evp, p, i) != 0)
3620                 evp++;
3621         if (*evp != NULL)
3622         {
3623                 *evp++ = p;
3624         }
3625         else if (evp < &UserEnviron[MAXUSERENVIRON])
3626         {
3627                 *evp++ = p;
3628                 *evp = NULL;
3629         }
3630
3631         /* make sure it is in our environment as well */
3632         if (putenv(p) < 0)
3633                 syserr("sm_setuserenv: putenv(%s) failed", p);
3634 }
3635 /*
3636 **  DUMPSTATE -- dump state
3637 **
3638 **      For debugging.
3639 */
3640
3641 void
3642 dumpstate(when)
3643         char *when;
3644 {
3645         register char *j = macvalue('j', CurEnv);
3646         int rs;
3647         extern int NextMacroId;
3648
3649         sm_syslog(LOG_DEBUG, CurEnv->e_id,
3650                   "--- dumping state on %s: $j = %s ---",
3651                   when,
3652                   j == NULL ? "<NULL>" : j);
3653         if (j != NULL)
3654         {
3655                 if (!wordinclass(j, 'w'))
3656                         sm_syslog(LOG_DEBUG, CurEnv->e_id,
3657                                   "*** $j not in $=w ***");
3658         }
3659         sm_syslog(LOG_DEBUG, CurEnv->e_id, "CurChildren = %d", CurChildren);
3660         sm_syslog(LOG_DEBUG, CurEnv->e_id, "NextMacroId = %d (Max %d)",
3661                   NextMacroId, MAXMACROID);
3662         sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- open file descriptors: ---");
3663         printopenfds(true);
3664         sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- connection cache: ---");
3665         mci_dump_all(smioout, true);
3666         rs = strtorwset("debug_dumpstate", NULL, ST_FIND);
3667         if (rs > 0)
3668         {
3669                 int status;
3670                 register char **pvp;
3671                 char *pv[MAXATOM + 1];
3672
3673                 pv[0] = NULL;
3674                 status = REWRITE(pv, rs, CurEnv);
3675                 sm_syslog(LOG_DEBUG, CurEnv->e_id,
3676                           "--- ruleset debug_dumpstate returns stat %d, pv: ---",
3677                           status);
3678                 for (pvp = pv; *pvp != NULL; pvp++)
3679                         sm_syslog(LOG_DEBUG, CurEnv->e_id, "%s", *pvp);
3680         }
3681         sm_syslog(LOG_DEBUG, CurEnv->e_id, "--- end of state dump ---");
3682 }
3683
3684 #ifdef SIGUSR1
3685 /*
3686 **  SIGUSR1 -- Signal a request to dump state.
3687 **
3688 **      Parameters:
3689 **              sig -- calling signal.
3690 **
3691 **      Returns:
3692 **              none.
3693 **
3694 **      NOTE:   THIS CAN BE CALLED FROM A SIGNAL HANDLER.  DO NOT ADD
3695 **              ANYTHING TO THIS ROUTINE UNLESS YOU KNOW WHAT YOU ARE
3696 **              DOING.
3697 **
3698 **              XXX: More work is needed for this signal handler.
3699 */
3700
3701 /* ARGSUSED */
3702 static SIGFUNC_DECL
3703 sigusr1(sig)
3704         int sig;
3705 {
3706         int save_errno = errno;
3707
3708         FIX_SYSV_SIGNAL(sig, sigusr1);
3709         errno = save_errno;
3710         CHECK_CRITICAL(sig);
3711         dumpstate("user signal");
3712 # if SM_HEAP_CHECK
3713         dumpstab();
3714 # endif /* SM_HEAP_CHECK */
3715         errno = save_errno;
3716         return SIGFUNC_RETURN;
3717 }
3718 #endif /* SIGUSR1 */
3719
3720 /*
3721 **  DROP_PRIVILEGES -- reduce privileges to those of the RunAsUser option
3722 **
3723 **      Parameters:
3724 **              to_real_uid -- if set, drop to the real uid instead
3725 **                      of the RunAsUser.
3726 **
3727 **      Returns:
3728 **              EX_OSERR if the setuid failed.
3729 **              EX_OK otherwise.
3730 */
3731
3732 int
3733 drop_privileges(to_real_uid)
3734         bool to_real_uid;
3735 {
3736         int rval = EX_OK;
3737         GIDSET_T emptygidset[1];
3738
3739         if (tTd(47, 1))
3740                 sm_dprintf("drop_privileges(%d): Real[UG]id=%ld:%ld, get[ug]id=%ld:%ld, gete[ug]id=%ld:%ld, RunAs[UG]id=%ld:%ld\n",
3741                            (int) to_real_uid,
3742                            (long) RealUid, (long) RealGid,
3743                            (long) getuid(), (long) getgid(),
3744                            (long) geteuid(), (long) getegid(),
3745                            (long) RunAsUid, (long) RunAsGid);
3746
3747         if (to_real_uid)
3748         {
3749                 RunAsUserName = RealUserName;
3750                 RunAsUid = RealUid;
3751                 RunAsGid = RealGid;
3752                 EffGid = RunAsGid;
3753         }
3754
3755         /* make sure no one can grab open descriptors for secret files */
3756         endpwent();
3757         sm_mbdb_terminate();
3758
3759         /* reset group permissions; these can be set later */
3760         emptygidset[0] = (to_real_uid || RunAsGid != 0) ? RunAsGid : getegid();
3761
3762         /*
3763         **  Notice:  on some OS (Linux...) the setgroups() call causes
3764         **      a logfile entry if sendmail is not run by root.
3765         **      However, it is unclear (no POSIX standard) whether
3766         **      setgroups() can only succeed if executed by root.
3767         **      So for now we keep it as it is; if you want to change it, use
3768         **  if (geteuid() == 0 && setgroups(1, emptygidset) == -1)
3769         */
3770
3771         if (setgroups(1, emptygidset) == -1 && geteuid() == 0)
3772         {
3773                 syserr("drop_privileges: setgroups(1, %d) failed",
3774                        (int) emptygidset[0]);
3775                 rval = EX_OSERR;
3776         }
3777
3778         /* reset primary group id */
3779         if (to_real_uid)
3780         {
3781                 /*
3782                 **  Drop gid to real gid.
3783                 **  On some OS we must reset the effective[/real[/saved]] gid,
3784                 **  and then use setgid() to finally drop all group privileges.
3785                 **  Later on we check whether we can get back the
3786                 **  effective gid.
3787                 */
3788
3789 #if HASSETEGID
3790                 if (setegid(RunAsGid) < 0)
3791                 {
3792                         syserr("drop_privileges: setegid(%d) failed",
3793                                (int) RunAsGid);
3794                         rval = EX_OSERR;
3795                 }
3796 #else /* HASSETEGID */
3797 # if HASSETREGID
3798                 if (setregid(RunAsGid, RunAsGid) < 0)
3799                 {
3800                         syserr("drop_privileges: setregid(%d, %d) failed",
3801                                (int) RunAsGid, (int) RunAsGid);
3802                         rval = EX_OSERR;
3803                 }
3804 # else /* HASSETREGID */
3805 #  if HASSETRESGID
3806                 if (setresgid(RunAsGid, RunAsGid, RunAsGid) < 0)
3807                 {
3808                         syserr("drop_privileges: setresgid(%d, %d, %d) failed",
3809                                (int) RunAsGid, (int) RunAsGid, (int) RunAsGid);
3810                         rval = EX_OSERR;
3811                 }
3812 #  endif /* HASSETRESGID */
3813 # endif /* HASSETREGID */
3814 #endif /* HASSETEGID */
3815         }
3816         if (rval == EX_OK && (to_real_uid || RunAsGid != 0))
3817         {
3818                 if (setgid(RunAsGid) < 0 && (!UseMSP || getegid() != RunAsGid))
3819                 {
3820                         syserr("drop_privileges: setgid(%ld) failed",
3821                                (long) RunAsGid);
3822                         rval = EX_OSERR;
3823                 }
3824                 errno = 0;
3825                 if (rval == EX_OK && getegid() != RunAsGid)
3826                 {
3827                         syserr("drop_privileges: Unable to set effective gid=%ld to RunAsGid=%ld",
3828                                (long) getegid(), (long) RunAsGid);
3829                         rval = EX_OSERR;
3830                 }
3831         }
3832
3833         /* fiddle with uid */
3834         if (to_real_uid || RunAsUid != 0)
3835         {
3836                 uid_t euid;
3837
3838                 /*
3839                 **  Try to setuid(RunAsUid).
3840                 **  euid must be RunAsUid,
3841                 **  ruid must be RunAsUid unless (e|r)uid wasn't 0
3842                 **      and we didn't have to drop privileges to the real uid.
3843                 */
3844
3845                 if (setuid(RunAsUid) < 0 ||
3846                     geteuid() != RunAsUid ||
3847                     (getuid() != RunAsUid &&
3848                      (to_real_uid || geteuid() == 0 || getuid() == 0)))
3849                 {
3850 #if HASSETREUID
3851                         /*
3852                         **  if ruid != RunAsUid, euid == RunAsUid, then
3853                         **  try resetting just the real uid, then using
3854                         **  setuid() to drop the saved-uid as well.
3855                         */
3856
3857                         if (geteuid() == RunAsUid)
3858                         {
3859                                 if (setreuid(RunAsUid, -1) < 0)
3860                                 {
3861                                         syserr("drop_privileges: setreuid(%d, -1) failed",
3862                                                (int) RunAsUid);
3863                                         rval = EX_OSERR;
3864                                 }
3865                                 if (setuid(RunAsUid) < 0)
3866                                 {
3867                                         syserr("drop_privileges: second setuid(%d) attempt failed",
3868                                                (int) RunAsUid);
3869                                         rval = EX_OSERR;
3870                                 }
3871                         }
3872                         else
3873 #endif /* HASSETREUID */
3874                         {
3875                                 syserr("drop_privileges: setuid(%d) failed",
3876                                        (int) RunAsUid);
3877                                 rval = EX_OSERR;
3878                         }
3879                 }
3880                 euid = geteuid();
3881                 if (RunAsUid != 0 && setuid(0) == 0)
3882                 {
3883                         /*
3884                         **  Believe it or not, the Linux capability model
3885                         **  allows a non-root process to override setuid()
3886                         **  on a process running as root and prevent that
3887                         **  process from dropping privileges.
3888                         */
3889
3890                         syserr("drop_privileges: setuid(0) succeeded (when it should not)");
3891                         rval = EX_OSERR;
3892                 }
3893                 else if (RunAsUid != euid && setuid(euid) == 0)
3894                 {
3895                         /*
3896                         **  Some operating systems will keep the saved-uid
3897                         **  if a non-root effective-uid calls setuid(real-uid)
3898                         **  making it possible to set it back again later.
3899                         */
3900
3901                         syserr("drop_privileges: Unable to drop non-root set-user-ID privileges");
3902                         rval = EX_OSERR;
3903                 }
3904         }
3905
3906         if ((to_real_uid || RunAsGid != 0) &&
3907             rval == EX_OK && RunAsGid != EffGid &&
3908             getuid() != 0 && geteuid() != 0)
3909         {
3910                 errno = 0;
3911                 if (setgid(EffGid) == 0)
3912                 {
3913                         syserr("drop_privileges: setgid(%d) succeeded (when it should not)",
3914                                (int) EffGid);
3915                         rval = EX_OSERR;
3916                 }
3917         }
3918
3919         if (tTd(47, 5))
3920         {
3921                 sm_dprintf("drop_privileges: e/ruid = %d/%d e/rgid = %d/%d\n",
3922                            (int) geteuid(), (int) getuid(),
3923                            (int) getegid(), (int) getgid());
3924                 sm_dprintf("drop_privileges: RunAsUser = %d:%d\n",
3925                            (int) RunAsUid, (int) RunAsGid);
3926                 if (tTd(47, 10))
3927                         sm_dprintf("drop_privileges: rval = %d\n", rval);
3928         }
3929         return rval;
3930 }
3931 /*
3932 **  FILL_FD -- make sure a file descriptor has been properly allocated
3933 **
3934 **      Used to make sure that stdin/out/err are allocated on startup
3935 **
3936 **      Parameters:
3937 **              fd -- the file descriptor to be filled.
3938 **              where -- a string used for logging.  If NULL, this is
3939 **                      being called on startup, and logging should
3940 **                      not be done.
3941 **
3942 **      Returns:
3943 **              none
3944 **
3945 **      Side Effects:
3946 **              possibly changes MissingFds
3947 */
3948
3949 void
3950 fill_fd(fd, where)
3951         int fd;
3952         char *where;
3953 {
3954         int i;
3955         struct stat stbuf;
3956
3957         if (fstat(fd, &stbuf) >= 0 || errno != EBADF)
3958                 return;
3959
3960         if (where != NULL)
3961                 syserr("fill_fd: %s: fd %d not open", where, fd);
3962         else
3963                 MissingFds |= 1 << fd;
3964         i = open(SM_PATH_DEVNULL, fd == 0 ? O_RDONLY : O_WRONLY, 0666);
3965         if (i < 0)
3966         {
3967                 syserr("!fill_fd: %s: cannot open %s",
3968                        where == NULL ? "startup" : where, SM_PATH_DEVNULL);
3969         }
3970         if (fd != i)
3971         {
3972                 (void) dup2(i, fd);
3973                 (void) close(i);
3974         }
3975 }
3976 /*
3977 **  SM_PRINTOPTIONS -- print options
3978 **
3979 **      Parameters:
3980 **              options -- array of options.
3981 **
3982 **      Returns:
3983 **              none.
3984 */
3985
3986 static void
3987 sm_printoptions(options)
3988         char **options;
3989 {
3990         int ll;
3991         char **av;
3992
3993         av = options;
3994         ll = 7;
3995         while (*av != NULL)
3996         {
3997                 if (ll + strlen(*av) > 63)
3998                 {
3999                         sm_dprintf("\n");
4000                         ll = 0;
4001                 }
4002                 if (ll == 0)
4003                         sm_dprintf("\t\t");
4004                 else
4005                         sm_dprintf(" ");
4006                 sm_dprintf("%s", *av);
4007                 ll += strlen(*av++) + 1;
4008         }
4009         sm_dprintf("\n");
4010 }
4011
4012 /*
4013 **  TO8BIT -- convert \octal sequences in a test mode input line
4014 **
4015 **      Parameters:
4016 **              str -- the input line.
4017 **
4018 **      Returns:
4019 **              none.
4020 **
4021 **      Side Effects:
4022 **              replaces \0octal in str with octal value.
4023 */
4024
4025 static bool to8bit __P((char *));
4026
4027 static bool
4028 to8bit(str)
4029         char *str;
4030 {
4031         int c, len;
4032         char *out, *in;
4033         bool changed;
4034
4035         if (str == NULL)
4036                 return false;
4037         in = out = str;
4038         changed = false;
4039         len = 0;
4040         while ((c = (*str++ & 0377)) != '\0')
4041         {
4042                 int oct, nxtc;
4043
4044                 ++len;
4045                 if (c == '\\' &&
4046                     (nxtc = (*str & 0377)) == '0')
4047                 {
4048                         oct = 0;
4049                         while ((nxtc = (*str & 0377)) != '\0' &&
4050                                 isascii(nxtc) && isdigit(nxtc))
4051                         {
4052                                 oct <<= 3;
4053                                 oct += nxtc - '0';
4054                                 ++str;
4055                                 ++len;
4056                         }
4057                         changed = true;
4058                         c = oct;
4059                 }
4060                 *out++ = c;
4061         }
4062         *out++ = c;
4063         if (changed)
4064         {
4065                 char *q;
4066
4067                 q = quote_internal_chars(in, in, &len);
4068                 if (q != in)
4069                         sm_strlcpy(in, q, len);
4070         }
4071         return changed;
4072 }
4073
4074 /*
4075 **  TESTMODELINE -- process a test mode input line
4076 **
4077 **      Parameters:
4078 **              line -- the input line.
4079 **              e -- the current environment.
4080 **      Syntax:
4081 **              #  a comment
4082 **              .X process X as a configuration line
4083 **              =X dump a configuration item (such as mailers)
4084 **              $X dump a macro or class
4085 **              /X try an activity
4086 **              X  normal process through rule set X
4087 */
4088
4089 static void
4090 testmodeline(line, e)
4091         char *line;
4092         ENVELOPE *e;
4093 {
4094         register char *p;
4095         char *q;
4096         auto char *delimptr;
4097         int mid;
4098         int i, rs;
4099         STAB *map;
4100         char **s;
4101         struct rewrite *rw;
4102         ADDRESS a;
4103         char *lbp;
4104         auto int lbs;
4105         static int tryflags = RF_COPYNONE;
4106         char exbuf[MAXLINE];
4107         char lbuf[MAXLINE];
4108         extern unsigned char TokTypeNoC[];
4109         bool eightbit;
4110
4111         /* skip leading spaces */
4112         while (*line == ' ')
4113                 line++;
4114
4115         lbp = NULL;
4116         eightbit = false;
4117         switch (line[0])
4118         {
4119           case '#':
4120           case '\0':
4121                 return;
4122
4123           case '?':
4124                 help("-bt", e);
4125                 return;
4126
4127           case '.':             /* config-style settings */
4128                 switch (line[1])
4129                 {
4130                   case 'D':
4131                         mid = macid_parse(&line[2], &delimptr);
4132                         if (mid == 0)
4133                                 return;
4134                         lbs = sizeof(lbuf);
4135                         lbp = translate_dollars(delimptr, lbuf, &lbs);
4136                         macdefine(&e->e_macro, A_TEMP, mid, lbp);
4137                         if (lbp != lbuf)
4138                                 SM_FREE(lbp);
4139                         break;
4140
4141                   case 'C':
4142                         if (line[2] == '\0')    /* not to call syserr() */
4143                                 return;
4144
4145                         mid = macid_parse(&line[2], &delimptr);
4146                         if (mid == 0)
4147                                 return;
4148                         lbs = sizeof(lbuf);
4149                         lbp = translate_dollars(delimptr, lbuf, &lbs);
4150                         expand(lbp, exbuf, sizeof(exbuf), e);
4151                         if (lbp != lbuf)
4152                                 SM_FREE(lbp);
4153                         p = exbuf;
4154                         while (*p != '\0')
4155                         {
4156                                 register char *wd;
4157                                 char delim;
4158
4159                                 while (*p != '\0' && isascii(*p) && isspace(*p))
4160                                         p++;
4161                                 wd = p;
4162                                 while (*p != '\0' && !(isascii(*p) && isspace(*p)))
4163                                         p++;
4164                                 delim = *p;
4165                                 *p = '\0';
4166                                 if (wd[0] != '\0')
4167                                         setclass(mid, wd);
4168                                 *p = delim;
4169                         }
4170                         break;
4171
4172                   case '\0':
4173                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4174                                              "Usage: .[DC]macro value(s)\n");
4175                         break;
4176
4177                   default:
4178                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4179                                              "Unknown \".\" command %s\n", line);
4180                         break;
4181                 }
4182                 return;
4183
4184           case '=':             /* config-style settings */
4185                 switch (line[1])
4186                 {
4187                   case 'S':             /* dump rule set */
4188                         rs = strtorwset(&line[2], NULL, ST_FIND);
4189                         if (rs < 0)
4190                         {
4191                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4192                                                      "Undefined ruleset %s\n", &line[2]);
4193                                 return;
4194                         }
4195                         rw = RewriteRules[rs];
4196                         if (rw == NULL)
4197                                 return;
4198                         do
4199                         {
4200                                 (void) sm_io_putc(smioout, SM_TIME_DEFAULT,
4201                                                   'R');
4202                                 s = rw->r_lhs;
4203                                 while (*s != NULL)
4204                                 {
4205                                         xputs(smioout, *s++);
4206                                         (void) sm_io_putc(smioout,
4207                                                           SM_TIME_DEFAULT, ' ');
4208                                 }
4209                                 (void) sm_io_putc(smioout, SM_TIME_DEFAULT,
4210                                                   '\t');
4211                                 (void) sm_io_putc(smioout, SM_TIME_DEFAULT,
4212                                                   '\t');
4213                                 s = rw->r_rhs;
4214                                 while (*s != NULL)
4215                                 {
4216                                         xputs(smioout, *s++);
4217                                         (void) sm_io_putc(smioout,
4218                                                           SM_TIME_DEFAULT, ' ');
4219                                 }
4220                                 (void) sm_io_putc(smioout, SM_TIME_DEFAULT,
4221                                                   '\n');
4222                         } while ((rw = rw->r_next) != NULL);
4223                         break;
4224
4225                   case 'M':
4226                         for (i = 0; i < MAXMAILERS; i++)
4227                         {
4228                                 if (Mailer[i] != NULL)
4229                                         printmailer(smioout, Mailer[i]);
4230                         }
4231                         break;
4232
4233                   case '\0':
4234                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4235                                              "Usage: =Sruleset or =M\n");
4236                         break;
4237
4238                   default:
4239                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4240                                              "Unknown \"=\" command %s\n", line);
4241                         break;
4242                 }
4243                 return;
4244
4245           case '-':             /* set command-line-like opts */
4246                 switch (line[1])
4247                 {
4248                   case 'd':
4249                         tTflag(&line[2]);
4250                         break;
4251
4252                   case '\0':
4253                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4254                                              "Usage: -d{debug arguments}\n");
4255                         break;
4256
4257                   default:
4258                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4259                                              "Unknown \"-\" command %s\n", line);
4260                         break;
4261                 }
4262                 return;
4263
4264           case '$':
4265                 if (line[1] == '=')
4266                 {
4267                         mid = macid(&line[2]);
4268                         if (mid != 0)
4269                                 stabapply(dump_class, mid);
4270                         return;
4271                 }
4272                 mid = macid(&line[1]);
4273                 if (mid == 0)
4274                         return;
4275                 p = macvalue(mid, e);
4276                 if (p == NULL)
4277                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4278                                              "Undefined\n");
4279                 else
4280                 {
4281                         xputs(smioout, p);
4282                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4283                                              "\n");
4284                 }
4285                 return;
4286
4287           case '/':             /* miscellaneous commands */
4288                 p = &line[strlen(line)];
4289                 while (--p >= line && isascii(*p) && isspace(*p))
4290                         *p = '\0';
4291                 p = strpbrk(line, " \t");
4292                 if (p != NULL)
4293                 {
4294                         while (isascii(*p) && isspace(*p))
4295                                 *p++ = '\0';
4296                 }
4297                 else
4298                         p = "";
4299                 if (line[1] == '\0')
4300                 {
4301                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4302                                              "Usage: /[canon|map|mx|parse|try|tryflags]\n");
4303                         return;
4304                 }
4305                 if (sm_strcasecmp(&line[1], "quit") == 0)
4306                 {
4307                         CurEnv->e_id = NULL;
4308                         finis(true, true, ExitStat);
4309                         /* NOTREACHED */
4310                 }
4311                 if (sm_strcasecmp(&line[1], "mx") == 0)
4312                 {
4313 #if NAMED_BIND
4314                         /* look up MX records */
4315                         int nmx;
4316                         auto int rcode;
4317                         char *mxhosts[MAXMXHOSTS + 1];
4318
4319                         if (*p == '\0')
4320                         {
4321                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4322                                                      "Usage: /mx address\n");
4323                                 return;
4324                         }
4325                         nmx = getmxrr(p, mxhosts, NULL, false, &rcode, true,
4326                                       NULL);
4327                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4328                                              "getmxrr(%s) returns %d value(s):\n",
4329                                 p, nmx);
4330                         for (i = 0; i < nmx; i++)
4331                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4332                                                      "\t%s\n", mxhosts[i]);
4333 #else /* NAMED_BIND */
4334                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4335                                              "No MX code compiled in\n");
4336 #endif /* NAMED_BIND */
4337                 }
4338                 else if (sm_strcasecmp(&line[1], "canon") == 0)
4339                 {
4340                         char host[MAXHOSTNAMELEN];
4341
4342                         if (*p == '\0')
4343                         {
4344                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4345                                                      "Usage: /canon address\n");
4346                                 return;
4347                         }
4348                         else if (sm_strlcpy(host, p, sizeof(host)) >= sizeof(host))
4349                         {
4350                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4351                                                      "Name too long\n");
4352                                 return;
4353                         }
4354                         (void) getcanonname(host, sizeof(host), !HasWildcardMX,
4355                                             NULL);
4356                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4357                                              "getcanonname(%s) returns %s\n",
4358                                              p, host);
4359                 }
4360                 else if (sm_strcasecmp(&line[1], "map") == 0)
4361                 {
4362                         auto int rcode = EX_OK;
4363                         char *av[2];
4364
4365                         if (*p == '\0')
4366                         {
4367                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4368                                                      "Usage: /map mapname key\n");
4369                                 return;
4370                         }
4371                         for (q = p; *q != '\0' && !(isascii(*q) && isspace(*q));                             q++)
4372                                 continue;
4373                         if (*q == '\0')
4374                         {
4375                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4376                                                      "No key specified\n");
4377                                 return;
4378                         }
4379                         *q++ = '\0';
4380                         map = stab(p, ST_MAP, ST_FIND);
4381                         if (map == NULL)
4382                         {
4383                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4384                                                      "Map named \"%s\" not found\n", p);
4385                                 return;
4386                         }
4387                         if (!bitset(MF_OPEN, map->s_map.map_mflags) &&
4388                             !openmap(&(map->s_map)))
4389                         {
4390                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4391                                                      "Map named \"%s\" not open\n", p);
4392                                 return;
4393                         }
4394                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4395                                              "map_lookup: %s (%s) ", p, q);
4396                         av[0] = q;
4397                         av[1] = NULL;
4398                         p = (*map->s_map.map_class->map_lookup)
4399                                         (&map->s_map, q, av, &rcode);
4400                         if (p == NULL)
4401                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4402                                                      "no match (%d)\n",
4403                                                      rcode);
4404                         else
4405                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4406                                                      "returns %s (%d)\n", p,
4407                                                      rcode);
4408                 }
4409                 else if (sm_strcasecmp(&line[1], "try") == 0)
4410                 {
4411                         MAILER *m;
4412                         STAB *st;
4413                         auto int rcode = EX_OK;
4414
4415                         q = strpbrk(p, " \t");
4416                         if (q != NULL)
4417                         {
4418                                 while (isascii(*q) && isspace(*q))
4419                                         *q++ = '\0';
4420                         }
4421                         if (q == NULL || *q == '\0')
4422                         {
4423                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4424                                                      "Usage: /try mailer address\n");
4425                                 return;
4426                         }
4427                         st = stab(p, ST_MAILER, ST_FIND);
4428                         if (st == NULL)
4429                         {
4430                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4431                                                      "Unknown mailer %s\n", p);
4432                                 return;
4433                         }
4434                         m = st->s_mailer;
4435                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4436                                              "Trying %s %s address %s for mailer %s\n",
4437                                      bitset(RF_HEADERADDR, tryflags) ? "header"
4438                                                         : "envelope",
4439                                      bitset(RF_SENDERADDR, tryflags) ? "sender"
4440                                                         : "recipient", q, p);
4441                         p = remotename(q, m, tryflags, &rcode, CurEnv);
4442                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4443                                              "Rcode = %d, addr = %s\n",
4444                                              rcode, p == NULL ? "<NULL>" : p);
4445                         e->e_to = NULL;
4446                 }
4447                 else if (sm_strcasecmp(&line[1], "tryflags") == 0)
4448                 {
4449                         if (*p == '\0')
4450                         {
4451                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4452                                                      "Usage: /tryflags [Hh|Ee][Ss|Rr]\n");
4453                                 return;
4454                         }
4455                         for (; *p != '\0'; p++)
4456                         {
4457                                 switch (*p)
4458                                 {
4459                                   case 'H':
4460                                   case 'h':
4461                                         tryflags |= RF_HEADERADDR;
4462                                         break;
4463
4464                                   case 'E':
4465                                   case 'e':
4466                                         tryflags &= ~RF_HEADERADDR;
4467                                         break;
4468
4469                                   case 'S':
4470                                   case 's':
4471                                         tryflags |= RF_SENDERADDR;
4472                                         break;
4473
4474                                   case 'R':
4475                                   case 'r':
4476                                         tryflags &= ~RF_SENDERADDR;
4477                                         break;
4478                                 }
4479                         }
4480                         exbuf[0] = bitset(RF_HEADERADDR, tryflags) ? 'h' : 'e';
4481                         exbuf[1] = ' ';
4482                         exbuf[2] = bitset(RF_SENDERADDR, tryflags) ? 's' : 'r';
4483                         exbuf[3] = '\0';
4484                         macdefine(&e->e_macro, A_TEMP,
4485                                 macid("{addr_type}"), exbuf);
4486                 }
4487                 else if (sm_strcasecmp(&line[1], "parse") == 0)
4488                 {
4489                         if (*p == '\0')
4490                         {
4491                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4492                                                      "Usage: /parse address\n");
4493                                 return;
4494                         }
4495                         q = crackaddr(p, e);
4496                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4497                                              "Cracked address = ");
4498                         xputs(smioout, q);
4499                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4500                                              "\nParsing %s %s address\n",
4501                                              bitset(RF_HEADERADDR, tryflags) ?
4502                                                         "header" : "envelope",
4503                                              bitset(RF_SENDERADDR, tryflags) ?
4504                                                         "sender" : "recipient");
4505                         if (parseaddr(p, &a, tryflags, '\0', NULL, e, true)
4506                             == NULL)
4507                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4508                                                      "Cannot parse\n");
4509                         else if (a.q_host != NULL && a.q_host[0] != '\0')
4510                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4511                                                      "mailer %s, host %s, user %s\n",
4512                                                      a.q_mailer->m_name,
4513                                                      a.q_host,
4514                                                      a.q_user);
4515                         else
4516                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4517                                                      "mailer %s, user %s\n",
4518                                                      a.q_mailer->m_name,
4519                                                      a.q_user);
4520                         e->e_to = NULL;
4521                 }
4522                 else if (sm_strcasecmp(&line[1], "header") == 0)
4523                 {
4524                         unsigned long ul;
4525
4526                         ul = chompheader(p, CHHDR_CHECK|CHHDR_USER, NULL, e);
4527                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4528                                              "ul = %lu\n", ul);
4529                 }
4530 #if NETINET || NETINET6
4531                 else if (sm_strcasecmp(&line[1], "gethostbyname") == 0)
4532                 {
4533                         int family = AF_INET;
4534
4535                         q = strpbrk(p, " \t");
4536                         if (q != NULL)
4537                         {
4538                                 while (isascii(*q) && isspace(*q))
4539                                         *q++ = '\0';
4540 # if NETINET6
4541                                 if (*q != '\0' && (strcmp(q, "inet6") == 0 ||
4542                                                    strcmp(q, "AAAA") == 0))
4543                                         family = AF_INET6;
4544 # endif /* NETINET6 */
4545                         }
4546                         (void) sm_gethostbyname(p, family);
4547                 }
4548 #endif /* NETINET || NETINET6 */
4549                 else
4550                 {
4551                         (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4552                                              "Unknown \"/\" command %s\n",
4553                                              line);
4554                 }
4555                 (void) sm_io_flush(smioout, SM_TIME_DEFAULT);
4556                 return;
4557         }
4558
4559         for (p = line; isascii(*p) && isspace(*p); p++)
4560                 continue;
4561         q = p;
4562         while (*p != '\0' && !(isascii(*p) && isspace(*p)))
4563                 p++;
4564         if (*p == '\0')
4565         {
4566                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4567                                      "No address!\n");
4568                 return;
4569         }
4570         *p = '\0';
4571         if (tTd(23, 101))
4572                 eightbit = to8bit(p + 1);
4573         if (invalidaddr(p + 1, NULL, true))
4574                 return;
4575         do
4576         {
4577                 register char **pvp;
4578                 char pvpbuf[PSBUFSIZE];
4579
4580                 pvp = prescan(++p, ',', pvpbuf, sizeof(pvpbuf), &delimptr,
4581                               ConfigLevel >= 9 ? TokTypeNoC : ExtTokenTab, false);
4582                 if (pvp == NULL)
4583                         continue;
4584                 p = q;
4585                 while (*p != '\0')
4586                 {
4587                         int status;
4588
4589                         rs = strtorwset(p, NULL, ST_FIND);
4590                         if (rs < 0)
4591                         {
4592                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4593                                                      "Undefined ruleset %s\n",
4594                                                      p);
4595                                 break;
4596                         }
4597                         status = REWRITE(pvp, rs, e);
4598                         if (status != EX_OK)
4599                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4600                                                      "== Ruleset %s (%d) status %d\n",
4601                                                      p, rs, status);
4602                         else if (eightbit)
4603                         {
4604                                 cataddr(pvp, NULL, exbuf, sizeof(exbuf), '\0',
4605                                         true);
4606                                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4607                                                      "cataddr: %s\n",
4608                                                      str2prt(exbuf));
4609                         }
4610                         while (*p != '\0' && *p++ != ',')
4611                                 continue;
4612                 }
4613         } while (*(p = delimptr) != '\0');
4614         (void) sm_io_flush(smioout, SM_TIME_DEFAULT);
4615 }
4616
4617 static void
4618 dump_class(s, id)
4619         register STAB *s;
4620         int id;
4621 {
4622         if (s->s_symtype != ST_CLASS)
4623                 return;
4624         if (bitnset(bitidx(id), s->s_class))
4625                 (void) sm_io_fprintf(smioout, SM_TIME_DEFAULT,
4626                                      "%s\n", s->s_name);
4627 }
4628
4629 /*
4630 **  An exception type used to create QuickAbort exceptions.
4631 **  This is my first cut at converting QuickAbort from longjmp to exceptions.
4632 **  These exceptions have a single integer argument, which is the argument
4633 **  to longjmp in the original code (either 1 or 2).  I don't know the
4634 **  significance of 1 vs 2: the calls to setjmp don't care.
4635 */
4636
4637 const SM_EXC_TYPE_T EtypeQuickAbort =
4638 {
4639         SmExcTypeMagic,
4640         "E:mta.quickabort",
4641         "i",
4642         sm_etype_printf,
4643         "quick abort %0",
4644 };