diplodocus.org Git - nmh/blob - uip/inc.c

   1
   2 /*
   3  * inc.c -- incorporate messages from a maildrop into a folder
   4  *
   5  * $Id$
   6  */
   7
   8 #ifdef MAILGROUP
   9 /* Revised: Sat Apr 14 17:08:17 PDT 1990 (marvit@hplabs)
  10  *    Added hpux hacks to set and reset gid to be "mail" as needed. The reset
  11  *    is necessary so inc'ed mail is the group of the inc'er, rather than
  12  *    "mail". We setgid to egid only when [un]locking the mail file. This
  13  *    is also a major security precaution which will not be explained here.
  14  *
  15  * Fri Feb  7 16:04:57 PST 1992         John Romine <bug-mh@ics.uci.edu>
  16  *   NB: I'm not 100% sure that this setgid stuff is secure even now.
  17  */
  18 #endif
  19
  20 #include <h/mh.h>
  21 #include <fcntl.h>
  22
  23 #ifdef POP
  24 # include <h/dropsbr.h>
  25 # include <h/popsbr.h>
  26 #endif
  27
  28 #ifdef HESIOD
  29 # include <hesiod.h>
  30 #endif
  31
  32 #include <h/fmt_scan.h>
  33 #include <h/scansbr.h>
  34 #include <h/signals.h>
  35 #include <zotnet/tws/tws.h>
  36 #include <zotnet/mts/mts.h>
  37 #include <errno.h>
  38 #include <signal.h>
  39
  40 #ifndef POP
  41 # define POPminc(a) (a)
  42 #else
  43 # define POPminc(a)  0
  44 #endif
  45
  46 #ifndef RPOP
  47 # define RPOPminc(a) (a)
  48 #else
  49 # define RPOPminc(a)  0
  50 #endif
  51
  52 #ifndef APOP
  53 # define APOPminc(a) (a)
  54 #else
  55 # define APOPminc(a)  0
  56 #endif
  57
  58 #ifndef KPOP
  59 # define KPOPminc(a) (a)
  60 #else
  61 # define KPOPminc(a)  0
  62 #endif
  63
  64 static struct swit switches[] = {
  65 #define AUDSW                      0
  66     { "audit audit-file", 0 },
  67 #define NAUDSW                     1
  68     { "noaudit", 0 },
  69 #define CHGSW                      2
  70     { "changecur", 0 },
  71 #define NCHGSW                     3
  72     { "nochangecur", 0 },
  73 #define FILESW                     4
  74     { "file name", 0 },
  75 #define FORMSW                     5
  76     { "form formatfile", 0 },
  77 #define FMTSW                      6
  78     { "format string", 5 },
  79 #define HOSTSW                     7
  80     { "host hostname", POPminc (-4) },
  81 #define USERSW                     8
  82     { "user username", POPminc (-4) },
  83 #define PACKSW                     9
  84     { "pack file", POPminc (-4) },
  85 #define NPACKSW                   10
  86     { "nopack", POPminc (-6) },
  87 #define APOPSW                    11
  88     { "apop", APOPminc (-4) },
  89 #define NAPOPSW                   12
  90     { "noapop", APOPminc (-6) },
  91 #define RPOPSW                    13
  92     { "rpop", RPOPminc (-4) },
  93 #define NRPOPSW                   14
  94     { "norpop", RPOPminc (-6) },
  95 #define SILSW                     15
  96     { "silent", 0 },
  97 #define NSILSW                    16
  98     { "nosilent", 0 },
  99 #define TRNCSW                    17
 100     { "truncate", 0 },
 101 #define NTRNCSW                   18
 102     { "notruncate", 0 },
 103 #define WIDTHSW                   19
 104     { "width columns", 0 },
 105 #define VERSIONSW                 20
 106     { "version", 0 },
 107 #define HELPSW                    21
 108     { "help", 0 },
 109 #define SNOOPSW                   22
 110     { "snoop", -5 },
 111 #define KPOPSW                    23
 112     { "kpop", KPOPminc (-4) },
 113     { NULL, 0 }
 114 };
 115
 116 extern int errno;
 117
 118 /*
 119  * flags for the mail source
 120  */
 121 #define INC_FILE  0
 122 #define INC_POP   1
 123
 124 static int inc_type;
 125 static int snoop = 0;
 126
 127 #ifdef POP
 128 extern char response[];
 129
 130 static char *packfile = NULL;
 131 static int size;
 132 static long pos;
 133 static long start;
 134 static long stop;
 135
 136 static int mbx_style = MMDF_FORMAT;
 137 static int pd = NOTOK;
 138 static FILE *pf = NULL;
 139 #endif /* POP */
 140
 141
 142 /*
 143  * For setting and returning to "mail" gid
 144  */
 145 #ifdef MAILGROUP
 146 static int return_gid;
 147 #endif
 148
 149 /*
 150  * prototypes
 151  */
 152 char *map_name(char *);
 153
 154 #ifdef POP
 155 int done(int);
 156 static int pop_action(char *);
 157 static int pop_pack(char *);
 158 static int map_count(void);
 159 #endif
 160
 161
 162 int
 163 main (int argc, char **argv)
 164 {
 165     int chgflag = 1, trnflag = 1;
 166     int noisy = 1, width = 0, locked = 0;
 167     int rpop, i, hghnum, msgnum;
 168     int kpop = 0;
 169     char *cp, *maildir, *folder = NULL;
 170     char *format = NULL, *form = NULL;
 171     char *newmail, *host = NULL, *user = NULL;
 172     char *audfile = NULL, *from = NULL;
 173     char buf[BUFSIZ], **argp, *nfs, **arguments;
 174     struct msgs *mp;
 175     struct stat st, s1;
 176     FILE *in, *aud = NULL;
 177
 178 #ifdef POP
 179     int nmsgs, nbytes, p = 0;
 180     char *pass = NULL;
 181 #endif
 182
 183 #ifdef MHE
 184     FILE *mhe = NULL;
 185 #endif
 186
 187 #ifdef HESIOD
 188     struct hes_postoffice *po;
 189     char *tmphost;
 190 #endif
 191
 192 #ifdef LOCALE
 193     setlocale(LC_ALL, "");
 194 #endif
 195     invo_name = r1bindex (argv[0], '/');
 196
 197     /* read user profile/context */
 198     context_read();
 199
 200     mts_init (invo_name);
 201     arguments = getarguments (invo_name, argc, argv, 1);
 202     argp = arguments;
 203
 204 #ifdef POP
 205 # ifdef HESIOD
 206     /*
 207      * Scheme is:
 208      *        use MAILHOST environment variable if present,
 209      *  else try Hesiod.
 210      *  If that fails, use the default (if any)
 211      *  provided by mts.conf in mts_init()
 212      */
 213     if ((tmphost = getenv("MAILHOST")) != NULL)
 214         pophost = tmphost;
 215     else if ((po = hes_getmailhost(getusername())) != NULL &&
 216              strcmp(po->po_type, "POP") == 0)
 217         pophost = po->po_host;
 218 # endif /* HESIOD */
 219     /*
 220      * If there is a valid "pophost" entry in mts.conf,
 221      * then use it as the default host.
 222      */
 223     if (pophost && *pophost)
 224         host = pophost;
 225
 226     if ((cp = getenv ("MHPOPDEBUG")) && *cp)
 227         snoop++;
 228 #endif /* POP */
 229
 230     rpop = 0;
 231
 232     while ((cp = *argp++)) {
 233         if (*cp == '-') {
 234             switch (smatch (++cp, switches)) {
 235             case AMBIGSW:
 236                 ambigsw (cp, switches);
 237                 done (1);
 238             case UNKWNSW:
 239                 adios (NULL, "-%s unknown", cp);
 240
 241             case HELPSW:
 242                 snprintf (buf, sizeof(buf), "%s [+folder] [switches]", invo_name);
 243                 print_help (buf, switches, 1);
 244                 done (1);
 245             case VERSIONSW:
 246                 print_version(invo_name);
 247                 done (1);
 248
 249             case AUDSW:
 250                 if (!(cp = *argp++) || *cp == '-')
 251                     adios (NULL, "missing argument to %s", argp[-2]);
 252                 audfile = getcpy (m_maildir (cp));
 253                 continue;
 254             case NAUDSW:
 255                 audfile = NULL;
 256                 continue;
 257
 258             case CHGSW:
 259                 chgflag++;
 260                 continue;
 261             case NCHGSW:
 262                 chgflag = 0;
 263                 continue;
 264
 265             /*
 266              * The flag `trnflag' has the value:
 267              *
 268              * 2 if -truncate is given
 269              * 1 by default (truncating is default)
 270              * 0 if -notruncate is given
 271              */
 272             case TRNCSW:
 273                 trnflag = 2;
 274                 continue;
 275             case NTRNCSW:
 276                 trnflag = 0;
 277                 continue;
 278
 279             case FILESW:
 280                 if (!(cp = *argp++) || *cp == '-')
 281                     adios (NULL, "missing argument to %s", argp[-2]);
 282                 from = path (cp, TFILE);
 283
 284                 /*
 285                  * If the truncate file is in default state,
 286                  * change to not truncate.
 287                  */
 288                 if (trnflag == 1)
 289                     trnflag = 0;
 290                 continue;
 291
 292             case SILSW:
 293                 noisy = 0;
 294                 continue;
 295             case NSILSW:
 296                 noisy++;
 297                 continue;
 298
 299             case FORMSW:
 300                 if (!(form = *argp++) || *form == '-')
 301                     adios (NULL, "missing argument to %s", argp[-2]);
 302                 format = NULL;
 303                 continue;
 304             case FMTSW:
 305                 if (!(format = *argp++) || *format == '-')
 306                     adios (NULL, "missing argument to %s", argp[-2]);
 307                 form = NULL;
 308                 continue;
 309
 310             case WIDTHSW:
 311                 if (!(cp = *argp++) || *cp == '-')
 312                     adios (NULL, "missing argument to %s", argp[-2]);
 313                 width = atoi (cp);
 314                 continue;
 315
 316             case HOSTSW:
 317                 if (!(host = *argp++) || *host == '-')
 318                     adios (NULL, "missing argument to %s", argp[-2]);
 319                 continue;
 320             case USERSW:
 321                 if (!(user = *argp++) || *user == '-')
 322                     adios (NULL, "missing argument to %s", argp[-2]);
 323                 continue;
 324
 325             case PACKSW:
 326 #ifndef POP
 327                 if (!(cp = *argp++) || *cp == '-')
 328                     adios (NULL, "missing argument to %s", argp[-2]);
 329 #else /* POP */
 330                 if (!(packfile = *argp++) || *packfile == '-')
 331                     adios (NULL, "missing argument to %s", argp[-2]);
 332 #endif /* POP */
 333                 continue;
 334             case NPACKSW:
 335 #ifdef POP
 336                 packfile = NULL;
 337 #endif /* POP */
 338                 continue;
 339
 340             case APOPSW:
 341                 rpop = -1;
 342                 continue;
 343             case NAPOPSW:
 344                 rpop = 0;
 345                 continue;
 346
 347             case RPOPSW:
 348                 rpop = 1;
 349                 continue;
 350             case NRPOPSW:
 351                 rpop = 0;
 352                 continue;
 353
 354             case KPOPSW:
 355                 kpop = 1;
 356                 continue;
 357
 358             case SNOOPSW:
 359                 snoop++;
 360                 continue;
 361             }
 362         }
 363         if (*cp == '+' || *cp == '@') {
 364             if (folder)
 365                 adios (NULL, "only one folder at a time!");
 366             else
 367                 folder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
 368         } else {
 369             adios (NULL, "usage: %s [+folder] [switches]", invo_name);
 370         }
 371     }
 372
 373 #ifdef MAILGROUP
 374     return_gid = getegid();  /* Save effective gid, assuming we'll use it */
 375     setgid(getgid());        /* Turn off extraordinary privileges         */
 376 #endif  /* MAILGROUP */
 377
 378 #ifdef POP
 379     if (host && !*host)
 380         host = NULL;
 381     if (from || !host || rpop <= 0)
 382         setuid (getuid ());
 383 #endif /* POP */
 384
 385     /*
 386      * Where are we getting the new mail?
 387      */
 388     if (from)
 389         inc_type = INC_FILE;
 390 #ifdef POP
 391     else if (host)
 392         inc_type = INC_POP;
 393 #endif
 394     else
 395         inc_type = INC_FILE;
 396
 397 #ifdef POP
 398     /*
 399      * Are we getting the mail from
 400      * a POP server?
 401      */
 402     if (inc_type == INC_POP) {
 403         if (user == NULL)
 404             user = getusername ();
 405         if ( strcmp( POPSERVICE, "kpop" ) == 0 ) {
 406             kpop = 1;
 407         }
 408         if (kpop || ( rpop > 0))
 409             pass = getusername ();
 410         else
 411             ruserpass (host, &user, &pass);
 412
 413         /*
 414          * initialize POP connection
 415          */
 416         if (pop_init (host, user, pass, snoop, kpop ? 1 : rpop, kpop) == NOTOK)
 417             adios (NULL, "%s", response);
 418
 419         /* Check if there are any messages */
 420         if (pop_stat (&nmsgs, &nbytes) == NOTOK)
 421             adios (NULL, "%s", response);
 422
 423         if (rpop > 0)
 424             setuid (getuid ());
 425         if (nmsgs == 0) {
 426             pop_quit();
 427             adios (NULL, "no mail to incorporate");
 428         }
 429     }
 430 #endif /* POP */
 431
 432     /*
 433      * We will get the mail from a file
 434      * (typically the standard maildrop)
 435      */
 436
 437     if (inc_type == INC_FILE) {
 438         if (from)
 439             newmail = from;
 440         else if ((newmail = getenv ("MAILDROP")) && *newmail)
 441             newmail = m_mailpath (newmail);
 442         else if ((newmail = context_find ("maildrop")) && *newmail)
 443             newmail = m_mailpath (newmail);
 444         else {
 445             newmail = concat (MAILDIR, "/", MAILFIL, NULL);
 446         }
 447         if (stat (newmail, &s1) == NOTOK || s1.st_size == 0)
 448             adios (NULL, "no mail to incorporate");
 449     }
 450
 451 #ifdef POP
 452     /* skip the folder setup */
 453     if ((inc_type == INC_POP) && packfile)
 454         goto go_to_it;
 455 #endif /* POP */
 456
 457     if (!context_find ("path"))
 458         free (path ("./", TFOLDER));
 459     if (!folder)
 460         folder = getfolder (0);
 461     maildir = m_maildir (folder);
 462
 463     if (stat (maildir, &st) == NOTOK) {
 464         if (errno != ENOENT)
 465             adios (maildir, "error on folder");
 466         cp = concat ("Create folder \"", maildir, "\"? ", NULL);
 467         if (noisy && !getanswer (cp))
 468             done (1);
 469         free (cp);
 470         if (!makedir (maildir))
 471             adios (NULL, "unable to create folder %s", maildir);
 472     }
 473
 474     if (chdir (maildir) == NOTOK)
 475         adios (maildir, "unable to change directory to");
 476
 477     /* read folder and create message structure */
 478     if (!(mp = folder_read (folder)))
 479         adios (NULL, "unable to read folder %s", folder);
 480
 481 #ifdef POP
 482 go_to_it:
 483 #endif /* POP */
 484
 485     if (inc_type == INC_FILE) {
 486         if (access (newmail, W_OK) != NOTOK) {
 487             locked++;
 488             if (trnflag) {
 489                 SIGNAL (SIGHUP, SIG_IGN);
 490                 SIGNAL (SIGINT, SIG_IGN);
 491                 SIGNAL (SIGQUIT, SIG_IGN);
 492                 SIGNAL (SIGTERM, SIG_IGN);
 493             }
 494
 495 #ifdef MAILGROUP
 496             setgid(return_gid); /* Reset gid to lock mail file */
 497 #endif /* MAILGROUP */
 498
 499             /* lock and fopen the mail spool */
 500             if ((in = lkfopen (newmail, "r")) == NULL)
 501                 adios (NULL, "unable to lock and fopen %s", newmail);
 502
 503 #ifdef MAILGROUP
 504             setgid(getgid());   /* Return us to normal privileges */
 505 #endif /* MAILGROUP */
 506             fstat (fileno(in), &s1);
 507         } else {
 508             trnflag = 0;
 509             if ((in = fopen (newmail, "r")) == NULL)
 510                 adios (newmail, "unable to read");
 511         }
 512     }
 513
 514 #ifdef MAILGROUP
 515     setgid(getgid());   /* Return us to normal privileges */
 516 #endif /* MAILGROUP */
 517
 518     if (audfile) {
 519         if ((i = stat (audfile, &st)) == NOTOK)
 520             advise (NULL, "Creating Receive-Audit: %s", audfile);
 521         if ((aud = fopen (audfile, "a")) == NULL)
 522             adios (audfile, "unable to append to");
 523         else if (i == NOTOK)
 524             chmod (audfile, m_gmprot ());
 525
 526 #ifdef POP
 527         fprintf (aud, from ? "<<inc>> %s -ms %s\n"
 528                  : host ? "<<inc>> %s -host %s -user %s%s\n"
 529                  : "<<inc>> %s\n",
 530                  dtimenow (0), from ? from : host, user,
 531                  rpop < 0 ? " -apop" : rpop > 0 ? " -rpop" : "");
 532 #else /* POP */
 533         fprintf (aud, from ? "<<inc>> %s  -ms %s\n" : "<<inc>> %s\n",
 534                  dtimenow (0), from);
 535 #endif /* POP */
 536     }
 537
 538 #ifdef MHE
 539     if (context_find ("mhe")) {
 540         cp = concat (maildir, "/++", NULL);
 541         i = stat (cp, &st);
 542         if ((mhe = fopen (cp, "a")) == NULL)
 543             admonish (cp, "unable to append to");
 544         else
 545             if (i == NOTOK)
 546                 chmod (cp, m_gmprot ());
 547         free (cp);
 548     }
 549 #endif /* MHE */
 550
 551     /* Get new format string */
 552     nfs = new_fs (form, format, FORMAT);
 553
 554     if (noisy) {
 555         printf ("Incorporating new mail into %s...\n\n", folder);
 556         fflush (stdout);
 557     }
 558
 559 #ifdef POP
 560     /*
 561      * Get the mail from a POP server
 562      */
 563     if (inc_type == INC_POP) {
 564         if (packfile) {
 565             packfile = path (packfile, TFILE);
 566             if (stat (packfile, &st) == NOTOK) {
 567                 if (errno != ENOENT)
 568                     adios (packfile, "error on file");
 569                 cp = concat ("Create file \"", packfile, "\"? ", NULL);
 570                 if (noisy && !getanswer (cp))
 571                     done (1);
 572                 free (cp);
 573             }
 574             msgnum = map_count ();
 575             if ((pd = mbx_open (packfile, mbx_style, getuid(), getgid(), m_gmprot()))
 576                 == NOTOK)
 577                 adios (packfile, "unable to open");
 578             if ((pf = fdopen (pd, "w+")) == NULL)
 579                 adios (NULL, "unable to fdopen %s", packfile);
 580         } else {
 581             hghnum = msgnum = mp->hghmsg;
 582             /*
 583              * Check if we have enough message space for all the new
 584              * messages.  If not, then realloc the folder and add enough
 585              * space for all new messages plus 10 additional slots.
 586              */
 587             if (mp->hghmsg + nmsgs >= mp->hghoff
 588                 && !(mp = folder_realloc (mp, mp->lowoff, mp->hghmsg + nmsgs + 10)))
 589                 adios (NULL, "unable to allocate folder storage");
 590         }
 591
 592         for (i = 1; i <= nmsgs; i++) {
 593             msgnum++;
 594             if (packfile) {
 595                 fseek (pf, 0L, SEEK_CUR);
 596                 pos = ftell (pf);
 597                 size = 0;
 598                 fwrite (mmdlm1, 1, strlen (mmdlm1), pf);
 599                 start = ftell (pf);
 600
 601                 if (pop_retr (i, pop_pack) == NOTOK)
 602                     adios (NULL, "%s", response);
 603
 604                 fseek (pf, 0L, SEEK_CUR);
 605                 stop = ftell (pf);
 606                 if (fflush (pf))
 607                     adios (packfile, "write error on");
 608                 fseek (pf, start, SEEK_SET);
 609             } else {
 610                 cp = getcpy (m_name (msgnum));
 611                 if ((pf = fopen (cp, "w+")) == NULL)
 612                     adios (cp, "unable to write");
 613                 chmod (cp, m_gmprot ());
 614                 start = stop = 0L;
 615
 616                 if (pop_retr (i, pop_action) == NOTOK)
 617                     adios (NULL, "%s", response);
 618
 619                 if (fflush (pf))
 620                     adios (cp, "write error on");
 621                 fseek (pf, 0L, SEEK_SET);
 622             }
 623             switch (p = scan (pf, msgnum, 0, nfs, width,
 624                               packfile ? 0 : msgnum == mp->hghmsg + 1 && chgflag,
 625                               1, NULL, stop - start, noisy)) {
 626             case SCNEOF:
 627                 printf ("%*d  empty\n", DMAXFOLDER, msgnum);
 628                 break;
 629
 630             case SCNFAT:
 631                 trnflag = 0;
 632                 noisy++;
 633                 /* advise (cp, "unable to read"); already advised */
 634                 /* fall thru */
 635
 636             case SCNERR:
 637             case SCNNUM:
 638                 break;
 639
 640             case SCNMSG:
 641             case SCNENC:
 642             default:
 643                 if (aud)
 644                     fputs (scanl, aud);
 645 # ifdef MHE
 646                 if (mhe)
 647                     fputs (scanl, mhe);
 648 # endif /* MHE */
 649                 if (noisy)
 650                     fflush (stdout);
 651                 if (!packfile) {
 652                     clear_msg_flags (mp, msgnum);
 653                     set_exists (mp, msgnum);
 654                     set_unseen (mp, msgnum);
 655                     mp->msgflags |= SEQMOD;
 656                 }
 657                 break;
 658             }
 659             if (packfile) {
 660                 fseek (pf, stop, SEEK_SET);
 661                 fwrite (mmdlm2, 1, strlen (mmdlm2), pf);
 662                 if (fflush (pf) || ferror (pf)) {
 663                     int e = errno;
 664                     pop_quit ();
 665                     errno = e;
 666                     adios (packfile, "write error on");
 667                 }
 668                 map_write (packfile, pd, 0, 0L, start, stop, pos, size, noisy);
 669             } else {
 670                 if (ferror(pf) || fclose (pf)) {
 671                     int e = errno;
 672                     unlink (cp);
 673                     pop_quit ();
 674                     errno = e;
 675                     adios (cp, "write error on");
 676                 }
 677                 free (cp);
 678             }
 679
 680             if (trnflag && pop_dele (i) == NOTOK)
 681                 adios (NULL, "%s", response);
 682         }
 683
 684         if (pop_quit () == NOTOK)
 685             adios (NULL, "%s", response);
 686         if (packfile) {
 687             mbx_close (packfile, pd);
 688             pd = NOTOK;
 689         }
 690     }
 691 #endif /* POP */
 692
 693     /*
 694      * Get the mail from file (usually mail spool)
 695      */
 696     if (inc_type == INC_FILE) {
 697         m_unknown (in);         /* the MAGIC invocation... */
 698         hghnum = msgnum = mp->hghmsg;
 699         for (i = 0;;) {
 700             /*
 701              * Check if we need to allocate more space for message status.
 702              * If so, then add space for an additional 100 messages.
 703              */
 704             if (msgnum >= mp->hghoff
 705                 && !(mp = folder_realloc (mp, mp->lowoff, mp->hghoff + 100))) {
 706                 advise (NULL, "unable to allocate folder storage");
 707                 i = NOTOK;
 708                 break;
 709             }
 710
 711 #if 0
 712             /* copy file from spool to tmp file */
 713             tmpfilenam = m_scratch ("", invo_name);
 714             if ((fd = creat (tmpfilenam, m_gmprot ())) == NOTOK)
 715                 adios (tmpfilenam, "unable to create");
 716             chmod (tmpfilenam, m_gmprot ());
 717             if (!(in2 = fdopen (fd, "r+")))
 718                 adios (tmpfilenam, "unable to access");
 719             cpymsg (in, in2);
 720
 721             /* link message into folder */
 722             newmsg = folder_addmsg(mp, tmpfilenam);
 723 #endif
 724
 725             /* create scanline for new message */
 726             switch (i = scan (in, msgnum + 1, msgnum + 1, nfs, width,
 727                               msgnum == hghnum && chgflag, 1, NULL, 0L, noisy)) {
 728             case SCNFAT:
 729             case SCNEOF:
 730                 break;
 731
 732             case SCNERR:
 733                 if (aud)
 734                     fputs ("inc aborted!\n", aud);
 735                 advise (NULL, "aborted!");      /* doesn't clean up locks! */
 736                 break;
 737
 738             case SCNNUM:
 739                 advise (NULL, "BUG in %s, number out of range", invo_name);
 740                 break;
 741
 742             default:
 743                 advise (NULL, "BUG in %s, scan() botch (%d)", invo_name, i);
 744                 break;
 745
 746             case SCNMSG:
 747             case SCNENC:
 748                 if (aud)
 749                     fputs (scanl, aud);
 750 #ifdef MHE
 751                 if (mhe)
 752                     fputs (scanl, mhe);
 753 #endif /* MHE */
 754                 if (noisy)
 755                     fflush (stdout);
 756
 757                 msgnum++;
 758                 mp->hghmsg++;
 759                 clear_msg_flags (mp, msgnum);
 760                 set_exists (mp, msgnum);
 761                 set_unseen (mp, msgnum);
 762                 mp->msgflags |= SEQMOD;
 763                 continue;
 764             }
 765             break;
 766         }
 767     }
 768
 769 #ifdef POP
 770     if (p < 0) {                /* error */
 771 #else
 772     if (i < 0) {                /* error */
 773 #endif
 774         if (locked) {
 775 #ifdef MAILGROUP
 776             /* Be sure we can unlock mail file */
 777             setgid(return_gid);
 778 #endif /* MAILGROUP */
 779
 780             lkfclose (in, newmail);
 781
 782 #ifdef MAILGROUP
 783             /* And then return us to normal privileges */
 784             setgid(getgid());
 785 #endif /* MAILGROUP */
 786         } else {
 787             fclose (in);
 788         }
 789         adios (NULL, "failed");
 790     }
 791
 792     if (aud)
 793         fclose (aud);
 794
 795 #ifdef MHE
 796     if (mhe)
 797         fclose (mhe);
 798 #endif /* MHE */
 799
 800     if (noisy)
 801         fflush (stdout);
 802
 803 #ifdef POP
 804     if ((inc_type == INC_POP) && packfile)
 805         done (0);
 806 #endif /* POP */
 807
 808     /*
 809      * truncate file we are incorporating from
 810      */
 811     if (inc_type == INC_FILE) {
 812         if (trnflag) {
 813             if (stat (newmail, &st) != NOTOK && s1.st_mtime != st.st_mtime)
 814                 advise (NULL, "new messages have arrived!\007");
 815             else {
 816                 if ((i = creat (newmail, 0600)) != NOTOK)
 817                     close (i);
 818                 else
 819                     admonish (newmail, "error zero'ing");
 820                 unlink(map_name(newmail));
 821             }
 822         } else {
 823             if (noisy)
 824                 printf ("%s not zero'd\n", newmail);
 825         }
 826     }
 827
 828     if (msgnum == hghnum) {
 829         admonish (NULL, "no messages incorporated");
 830     } else {
 831         context_replace (pfolder, folder);      /* update current folder */
 832         if (chgflag)
 833             mp->curmsg = hghnum + 1;
 834         mp->hghmsg = msgnum;
 835         if (mp->lowmsg == 0)
 836             mp->lowmsg = 1;
 837         if (chgflag)            /* sigh... */
 838             seq_setcur (mp, mp->curmsg);
 839     }
 840
 841     /*
 842      * unlock the mail spool
 843      */
 844     if (inc_type == INC_FILE) {
 845         if (locked) {
 846 #ifdef MAILGROUP
 847             setgid(return_gid); /* Be sure we can unlock mail file */
 848 #endif /* MAILGROUP */
 849
 850             lkfclose (in, newmail);
 851
 852 #ifdef MAILGROUP
 853             setgid(getgid());   /* And then return us to normal privileges */
 854 #endif /* MAILGROUP */
 855         } else {
 856             fclose (in);
 857         }
 858     }
 859
 860     seq_setunseen (mp, 0);      /* set the Unseen-Sequence */
 861     seq_save (mp);              /* synchronize sequences   */
 862     context_save ();            /* save the context file   */
 863     return done (0);
 864 }
 865
 866
 867 #if 0
 868
 869 /*
 870  * Copy message message from spool into
 871  * temporary file.  Massage the "From " line
 872  * while copying.
 873  */
 874
 875 cpymsg (FILE *in, FILE *out)
 876 {
 877     int state;
 878     char *tmpbuf, name[NAMESZ];
 879
 880     for (;;) {
 881         state = m_getfld (state, name, tmpbuf, rlwidth, in);
 882         switch (state) {
 883         case FLD:
 884         case FLDPLUS:
 885             break;
 886         case BODY:
 887             break;
 888         case LENERR:
 889         case FMTERR:
 890             break;
 891         case FILEEOF:
 892             break;
 893         default:
 894         }
 895     }
 896 }
 897 #endif /* if 0 */
 898
 899
 900 #ifdef POP
 901 int
 902 done (int status)
 903 {
 904     if (packfile && pd != NOTOK)
 905         mbx_close (packfile, pd);
 906
 907     exit (status);
 908     return 1;  /* dead code to satisfy the compiler */
 909 }
 910
 911 static int
 912 pop_action (char *s)
 913 {
 914     fprintf (pf, "%s\n", s);
 915     stop += strlen (s) + 1;
 916     return 0;  /* Is return value used?  This was missing before 1999-07-15. */
 917 }
 918
 919 static int
 920 pop_pack (char *s)
 921 {
 922     int j;
 923     char buffer[BUFSIZ];
 924
 925     snprintf (buffer, sizeof(buffer), "%s\n", s);
 926     for (j = 0; (j = stringdex (mmdlm1, buffer)) >= 0; buffer[j]++)
 927         continue;
 928     for (j = 0; (j = stringdex (mmdlm2, buffer)) >= 0; buffer[j]++)
 929         continue;
 930     fputs (buffer, pf);
 931     size += strlen (buffer) + 1;
 932     return 0;  /* Is return value used?  This was missing before 1999-07-15. */
 933 }
 934
 935 static int
 936 map_count (void)
 937 {
 938     int md;
 939     char *cp;
 940     struct drop d;
 941     struct stat st;
 942
 943     if (stat (packfile, &st) == NOTOK)
 944         return 0;
 945     if ((md = open (cp = map_name (packfile), O_RDONLY)) == NOTOK
 946             || map_chk (cp, md, &d, (long) st.st_size, 1)) {
 947         if (md != NOTOK)
 948             close (md);
 949         return 0;
 950     }
 951     close (md);
 952     return (d.d_id);
 953 }
 954 #endif /* POP */