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

   1
   2 /*
   3  * spost.c -- feed messages to sendmail
   4  *
   5  * This is a simpler, faster, replacement for "post" for use
   6  * when "sendmail" is the transport system.
   7  *
   8  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   9  * COPYRIGHT file in the root directory of the nmh distribution for
  10  * complete copyright information.
  11  */
  12
  13 #include <h/mh.h>
  14 #include <signal.h>
  15 #include <h/addrsbr.h>
  16 #include <h/aliasbr.h>
  17 #include <h/dropsbr.h>
  18 #include <h/tws.h>
  19 #include <h/mts.h>
  20 #include <h/utils.h>
  21
  22 #define MAX_SM_FIELD    1476    /* < largest hdr field sendmail will accept */
  23 #define FCCS            10      /* max number of fccs allowed */
  24
  25 struct swit switches[] = {
  26 #define FILTSW               0
  27     { "filter filterfile", 0 },
  28 #define NFILTSW              1
  29     { "nofilter", 0 },
  30 #define FRMTSW               2
  31     { "format", 0 },
  32 #define NFRMTSW              3
  33     { "noformat", 0 },
  34 #define REMVSW               4
  35     { "remove", 0 },
  36 #define NREMVSW              5
  37     { "noremove", 0 },
  38 #define VERBSW               6
  39     { "verbose", 0 },
  40 #define NVERBSW              7
  41     { "noverbose", 0 },
  42 #define WATCSW               8
  43     { "watch", 0 },
  44 #define NWATCSW              9
  45     { "nowatch", 0 },
  46 #define BACKSW              10
  47     { "backup", 0 },
  48 #define NBACKSW             11
  49     { "nobackup", 0 },
  50 #define ALIASW              12
  51     { "alias aliasfile", 0 },
  52 #define NALIASW             13
  53     { "noalias", 0 },
  54 #define WIDTHSW             14
  55     { "width columns", 0 },
  56 #define VERSIONSW           15
  57     { "version", 0 },
  58 #define HELPSW              16
  59     { "help", 0 },
  60 #define DEBUGSW             17
  61     { "debug", -5 },
  62 #define DISTSW              18
  63     { "dist", -4 },             /* interface from dist */
  64 #define CHKSW               19
  65     { "check", -5 },            /* interface from whom */
  66 #define NCHKSW              20
  67     { "nocheck", -7 },          /* interface from whom */
  68 #define WHOMSW              21
  69     { "whom", -4 },             /* interface from whom */
  70 #define PUSHSW              22  /* fork to sendmail then exit */
  71     { "push", -4 },
  72 #define NPUSHSW             23  /* exec sendmail */
  73     { "nopush", -6 },
  74 #define LIBSW               24
  75     { "library directory", -7 },
  76 #define ANNOSW              25
  77     { "idanno number", -6 },
  78     { NULL, 0 }
  79 };
  80
  81
  82 /* flags for headers->flags */
  83 #define HNOP    0x0000          /* just used to keep .set around */
  84 #define HBAD    0x0001          /* bad header - don't let it through */
  85 #define HADR    0x0002          /* header has an address field */
  86 #define HSUB    0x0004          /* Subject: header */
  87 #define HTRY    0x0008          /* try to send to addrs on header */
  88 #define HBCC    0x0010          /* don't output this header */
  89 #define HMNG    0x0020          /* mung this header */
  90 #define HNGR    0x0040          /* no groups allowed in this header */
  91 #define HFCC    0x0080          /* FCC: type header */
  92 #define HNIL    0x0100          /* okay for this header not to have addrs */
  93 #define HIGN    0x0200          /* ignore this header */
  94
  95 /* flags for headers->set */
  96 #define MFRM    0x0001          /* we've seen a From: */
  97 #define MDAT    0x0002          /* we've seen a Date: */
  98 #define MRFM    0x0004          /* we've seen a Resent-From: */
  99 #define MVIS    0x0008          /* we've seen sighted addrs */
 100 #define MINV    0x0010          /* we've seen blind addrs */
 101 #define MRDT    0x0020          /* we've seen a Resent-Date: */
 102
 103 struct headers {
 104     char *value;
 105     unsigned int flags;
 106     unsigned int set;
 107 };
 108
 109
 110 static struct headers NHeaders[] = {
 111     { "Return-Path", HBAD,                0 },
 112     { "Received",    HBAD,                0 },
 113     { "Reply-To",    HADR|HNGR,           0 },
 114     { "From",        HADR|HNGR,           MFRM },
 115     { "Sender",      HADR|HBAD,           0 },
 116     { "Date",        HNOP,                MDAT },
 117     { "Subject",     HSUB,                0 },
 118     { "To",          HADR|HTRY,           MVIS },
 119     { "cc",          HADR|HTRY,           MVIS },
 120     { "Bcc",         HADR|HTRY|HBCC|HNIL, MINV },
 121     { "Message-Id",  HBAD,                0 },
 122     { "Fcc",         HFCC,                0 },
 123     { NULL,          0,                   0 }
 124 };
 125
 126 static struct headers RHeaders[] = {
 127     { "Resent-Reply-To",   HADR|HNGR,      0 },
 128     { "Resent-From",       HADR|HNGR,      MRFM },
 129     { "Resent-Sender",     HADR|HBAD,      0 },
 130     { "Resent-Date",       HNOP,           MRDT },
 131     { "Resent-Subject",    HSUB,           0 },
 132     { "Resent-To",         HADR|HTRY,      MVIS },
 133     { "Resent-cc",         HADR|HTRY,      MVIS },
 134     { "Resent-Bcc",        HADR|HTRY|HBCC, MINV },
 135     { "Resent-Message-Id", HBAD,           0 },
 136     { "Resent-Fcc",        HFCC,           0 },
 137     { "Reply-To",          HADR,           0 },
 138     { "Fcc",               HIGN,           0 },
 139     { NULL,                0,              0 }
 140 };
 141
 142
 143 static short fccind = 0;        /* index into fccfold[] */
 144
 145 static int badmsg = 0;          /* message has bad semantics            */
 146 static int verbose = 0;         /* spell it out                         */
 147 static int debug = 0;           /* debugging post                       */
 148 static int rmflg = 1;           /* remove temporary file when done      */
 149 static int watch = 0;           /* watch the delivery process           */
 150 static int backflg = 0;         /* rename input file as *.bak when done */
 151 static int whomflg = 0;         /* if just checking addresses           */
 152 static int pushflg = 0;         /* if going to fork to sendmail         */
 153 static int aliasflg = -1;       /* if going to process aliases          */
 154 static int outputlinelen=72;
 155
 156 static unsigned msgflags = 0;   /* what we've seen */
 157
 158 static enum {
 159     normal, resent
 160 } msgstate = normal;
 161
 162 static char tmpfil[] = "/tmp/pstXXXXXX";
 163
 164 static char from[BUFSIZ];       /* my network address */
 165 static char signature[BUFSIZ];  /* my signature */
 166 static char *filter = NULL;     /* the filter for BCC'ing */
 167 static char *subject = NULL;    /* the subject field for BCC'ing */
 168 static char *fccfold[FCCS];     /* foldernames for FCC'ing */
 169
 170 static struct headers *hdrtab;  /* table for the message we're doing */
 171 static FILE *out;               /* output (temp) file */
 172
 173 extern char *sendmail;
 174
 175 /*
 176  * external prototypes
 177  */
 178 extern char *getfullname (void);
 179 extern char *getusername (void);
 180
 181 extern boolean  draft_from_masquerading;  /* defined in mts.c */
 182
 183 /*
 184  * static prototypes
 185  */
 186 static void putfmt (char *, char *, FILE *);
 187 static void start_headers (void);
 188 static void finish_headers (FILE *);
 189 static int get_header (char *, struct headers *);
 190 static void putadr (char *, struct mailname *);
 191 static int putone (char *, int, int);
 192 static void insert_fcc (struct headers *, unsigned char *);
 193 static void file (char *);
 194 static void fcc (char *, char *);
 195
 196 #if 0
 197 static void die (char *, char *, ...);
 198 static void make_bcc_file (void);
 199 #endif
 200
 201
 202 int
 203 main (int argc, char **argv)
 204 {
 205     int state, i, pid, compnum;
 206     char *cp, *msg = NULL, **argp, **arguments;
 207     char *sargv[16], buf[BUFSIZ], name[NAMESZ];
 208     FILE *in;
 209
 210 #ifdef LOCALE
 211     setlocale(LC_ALL, "");
 212 #endif
 213     invo_name = r1bindex (argv[0], '/');
 214
 215     /* foil search of user profile/context */
 216     if (context_foil (NULL) == -1)
 217         done (1);
 218
 219     mts_init (invo_name);
 220     arguments = getarguments (invo_name, argc, argv, 0);
 221     argp = arguments;
 222
 223     while ((cp = *argp++)) {
 224         if (*cp == '-') {
 225             switch (smatch (++cp, switches)) {
 226                 case AMBIGSW:
 227                     ambigsw (cp, switches);
 228                     done (1);
 229                 case UNKWNSW:
 230                     adios (NULL, "-%s unknown", cp);
 231
 232                 case HELPSW:
 233                     snprintf (buf, sizeof(buf), "%s [switches] file", invo_name);
 234                     print_help (buf, switches, 1);
 235                     done (1);
 236                 case VERSIONSW:
 237                     print_version(invo_name);
 238                     done (1);
 239
 240                 case DEBUGSW:
 241                     debug++;
 242                     continue;
 243
 244                 case DISTSW:
 245                     msgstate = resent;
 246                     continue;
 247
 248                 case WHOMSW:
 249                     whomflg++;
 250                     continue;
 251
 252                 case FILTSW:
 253                     if (!(filter = *argp++) || *filter == '-')
 254                         adios (NULL, "missing argument to %s", argp[-2]);
 255                     continue;
 256                 case NFILTSW:
 257                     filter = NULL;
 258                     continue;
 259
 260                 case REMVSW:
 261                     rmflg++;
 262                     continue;
 263                 case NREMVSW:
 264                     rmflg = 0;
 265                     continue;
 266
 267                 case BACKSW:
 268                     backflg++;
 269                     continue;
 270                 case NBACKSW:
 271                     backflg = 0;
 272                     continue;
 273
 274                 case VERBSW:
 275                     verbose++;
 276                     continue;
 277                 case NVERBSW:
 278                     verbose = 0;
 279                     continue;
 280
 281                 case WATCSW:
 282                     watch++;
 283                     continue;
 284                 case NWATCSW:
 285                     watch = 0;
 286                     continue;
 287
 288                 case PUSHSW:
 289                     pushflg++;
 290                     continue;
 291                 case NPUSHSW:
 292                     pushflg = 0;
 293                     continue;
 294
 295                 case ALIASW:
 296                     if (!(cp = *argp++) || *cp == '-')
 297                         adios (NULL, "missing argument to %s", argp[-2]);
 298                     if (aliasflg < 0)
 299                         alias (AliasFile);/* load default aka's */
 300                     aliasflg = 1;
 301                     if ((state = alias(cp)) != AK_OK)
 302                         adios (NULL, "aliasing error in file %s - %s",
 303                                cp, akerror(state) );
 304                     continue;
 305                 case NALIASW:
 306                     aliasflg = 0;
 307                     continue;
 308
 309                 case WIDTHSW:
 310                     if (!(cp = *argp++) || *cp == '-')
 311                         adios (NULL, "missing argument to %s", argp[-2]);
 312                     outputlinelen = atoi (cp);
 313                     if (outputlinelen <= 10)
 314                         outputlinelen = 72;
 315                     continue;
 316
 317                 case LIBSW:
 318                     if (!(cp = *argp++) || *cp == '-')
 319                         adios (NULL, "missing argument to %s", argp[-2]);
 320                     /* create a minimal context */
 321                     if (context_foil (cp) == -1)
 322                         done(1);
 323                     continue;
 324
 325                 case ANNOSW:
 326                     /* -idanno switch ignored */
 327                     if (!(cp = *argp++) || *cp == '-')
 328                         adios (NULL, "missing argument to %s", argp[-2]);
 329                     continue;
 330             }
 331         }
 332         if (msg)
 333             adios (NULL, "only one message at a time!");
 334         else
 335             msg = cp;
 336     }
 337
 338     if (aliasflg < 0)
 339         alias (AliasFile);      /* load default aka's */
 340
 341     if (!msg)
 342         adios (NULL, "usage: %s [switches] file", invo_name);
 343
 344     if ((in = fopen (msg, "r")) == NULL)
 345         adios (msg, "unable to open");
 346
 347     start_headers ();
 348     if (debug) {
 349         verbose++;
 350         out = stdout;
 351     }
 352     else {
 353             if ((out = fdopen( mkstemp (tmpfil), "w" )) == NULL )
 354                 adios (tmpfil, "unable to create");
 355         }
 356
 357     hdrtab = (msgstate == normal) ? NHeaders : RHeaders;
 358
 359     for (compnum = 1, state = FLD;;) {
 360         switch (state = m_getfld (state, name, buf, sizeof(buf), in)) {
 361             case FLD:
 362                 compnum++;
 363                 putfmt (name, buf, out);
 364                 continue;
 365
 366             case FLDPLUS:
 367                 compnum++;
 368                 cp = add (buf, cp);
 369                 while (state == FLDPLUS) {
 370                     state = m_getfld (state, name, buf, sizeof(buf), in);
 371                     cp = add (buf, cp);
 372                 }
 373                 putfmt (name, cp, out);
 374                 free (cp);
 375                 continue;
 376
 377             case BODY:
 378                 finish_headers (out);
 379                 fprintf (out, "\n%s", buf);
 380                 if(whomflg == 0)
 381                     while (state == BODY) {
 382                         state = m_getfld (state, name, buf, sizeof(buf), in);
 383                         fputs (buf, out);
 384                     }
 385                 break;
 386
 387             case FILEEOF:
 388                 finish_headers (out);
 389                 break;
 390
 391             case LENERR:
 392             case FMTERR:
 393                 adios (NULL, "message format error in component #%d",
 394                         compnum);
 395
 396             default:
 397                 adios (NULL, "getfld() returned %d", state);
 398         }
 399         break;
 400     }
 401
 402     fclose (in);
 403     if (backflg && !whomflg) {
 404         strncpy (buf, m_backup (msg), sizeof(buf));
 405         if (rename (msg, buf) == NOTOK)
 406             advise (buf, "unable to rename %s to", msg);
 407     }
 408
 409     if (debug) {
 410         done (0);
 411     }
 412     else
 413         fclose (out);
 414
 415     file (tmpfil);
 416
 417     /*
 418      * re-open the temp file, unlink it and exec sendmail, giving it
 419      * the msg temp file as std in.
 420      */
 421     if ( freopen( tmpfil, "r", stdin) == NULL)
 422         adios (tmpfil, "can't reopen for sendmail");
 423     if (rmflg)
 424         unlink (tmpfil);
 425
 426     argp = sargv;
 427     *argp++ = "send-mail";
 428     *argp++ = "-m";     /* send to me too */
 429     *argp++ = "-t";     /* read msg for recipients */
 430     *argp++ = "-i";     /* don't stop on "." */
 431     if (whomflg)
 432         *argp++ = "-bv";
 433     if (watch || verbose)
 434         *argp++ = "-v";
 435     *argp = NULL;
 436
 437     if (pushflg && !(watch || verbose)) {
 438         /* fork to a child to run sendmail */
 439         for (i=0; (pid = vfork()) == NOTOK && i < 5; i++)
 440             sleep(5);
 441         switch (pid) {
 442             case NOTOK:
 443                 fprintf (verbose ? stdout : stderr, "%s: can't fork to %s\n",
 444                          invo_name, sendmail);
 445                 exit(-1);
 446             case OK:
 447                 /* we're the child .. */
 448                 break;
 449             default:
 450                 exit(0);
 451         }
 452     }
 453     execv ( sendmail, sargv);
 454     adios ( sendmail, "can't exec");
 455     return 0;  /* dead code to satisfy the compiler */
 456 }
 457
 458 /* DRAFT GENERATION */
 459
 460 static void
 461 putfmt (char *name, char *str, FILE *out)
 462 {
 463     int i;
 464     char *cp, *pp;
 465     struct headers *hdr;
 466
 467     while (*str == ' ' || *str == '\t')
 468         str++;
 469
 470     if ((i = get_header (name, hdrtab)) == NOTOK) {
 471         fprintf (out, "%s: %s", name, str);
 472         return;
 473     }
 474
 475     hdr = &hdrtab[i];
 476     if (hdr->flags & HIGN)
 477         return;
 478     if (hdr->flags & HBAD) {
 479         advise (NULL, "illegal header line -- %s:", name);
 480         badmsg++;
 481         return;
 482     }
 483     msgflags |= hdr->set;
 484
 485     if (hdr->flags & HSUB)
 486         subject = subject ? add (str, add ("\t", subject)) : getcpy (str);
 487
 488     if (hdr->flags & HFCC) {
 489         if ((cp = strrchr(str, '\n')))
 490             *cp = 0;
 491         for (cp = pp = str; (cp = strchr(pp, ',')); pp = cp) {
 492             *cp++ = 0;
 493             insert_fcc (hdr, pp);
 494         }
 495         insert_fcc (hdr, pp);
 496         return;
 497     }
 498
 499 #ifdef notdef
 500     if (hdr->flags & HBCC) {
 501         insert_bcc(str);
 502         return;
 503     }
 504 #endif  /* notdef */
 505
 506     if (*str != '\n' && *str != '\0') {
 507         if (aliasflg && hdr->flags & HTRY) {
 508             /* this header contains address(es) that we have to do
 509              * alias expansion on.  Because of the saved state in
 510              * getname we have to put all the addresses into a list.
 511              * We then let putadr munch on that list, possibly
 512              * expanding aliases.
 513              */
 514             register struct mailname *f = 0;
 515             register struct mailname *mp = 0;
 516
 517             while ((cp = getname(str))) {
 518                 mp = getm( cp, NULL, 0, AD_HOST, NULL);
 519                 if (f == 0) {
 520                     f = mp;
 521                     mp->m_next = mp;
 522                 } else {
 523                     mp->m_next = f->m_next;
 524                     f->m_next = mp;
 525                     f = mp;
 526                 }
 527             }
 528             f = mp->m_next; mp->m_next = 0;
 529             putadr( name, f );
 530         } else {
 531             /* The author(s) of spost decided that alias substitution wasn't
 532                necessary for the non-HTRY headers.  Unfortunately, one of those
 533                headers is "From:", and having alias substitution work on that is
 534                extremely useful for someone with a lot of POP3 email accounts or
 535                aliases.  post supports aliasing of "From:"...
 536
 537                Since "From:"-processing is incompletely implemented in this
 538                unsupported and undocumented spost backend, I'm not going to take
 539                the time to implement my new draft-From:-based email address
 540                masquerading.  If I do ever implement it here, I'd almost
 541                certainly want to implement "From:" line alias processing as
 542                well.  -- Dan Harkless <dan-nmh@dilvish.speed.net> */
 543             fprintf (out, "%s: %s", name, str );
 544         }
 545     }
 546 }
 547
 548
 549 static void
 550 start_headers (void)
 551 {
 552     char *cp;
 553     char sigbuf[BUFSIZ];
 554
 555     strncpy(from, getusername(), sizeof(from));
 556
 557     if ((cp = getfullname ()) && *cp) {
 558         strncpy (sigbuf, cp, sizeof(sigbuf));
 559         snprintf (signature, sizeof(signature), "%s <%s>", sigbuf,  from);
 560     }
 561     else
 562         snprintf (signature, sizeof(signature), "%s",  from);
 563 }
 564
 565
 566 static void
 567 finish_headers (FILE *out)
 568 {
 569     switch (msgstate) {
 570         case normal:
 571             if (!(msgflags & MDAT))
 572                 fprintf (out, "Date: %s\n", dtimenow (0));
 573
 574             if (msgflags & MFRM) {
 575                 /* There was already a From: in the draft.  Don't add one. */
 576                 if (!draft_from_masquerading)
 577                     /* mts.conf didn't contain "masquerade:[...]draft_from[...]"
 578                        so we'll reveal the user's actual account@thismachine
 579                        address in a Sender: header (and use it as the envelope
 580                        From: later). */
 581                     fprintf (out, "Sender: %s\n", from);
 582             }
 583             else
 584                 fprintf (out, "From: %s\n", signature);
 585
 586 #ifdef notdef
 587             if (!(msgflags & MVIS))
 588                 fprintf (out, "Bcc: Blind Distribution List: ;\n");
 589 #endif  /* notdef */
 590             break;
 591
 592         case resent:
 593             if (!(msgflags & MRDT))
 594                 fprintf (out, "Resent-Date: %s\n", dtimenow(0));
 595             if (msgflags & MRFM) {
 596                 /* There was already a Resent-From: in draft.  Don't add one. */
 597                 if (!draft_from_masquerading)
 598                     /* mts.conf didn't contain "masquerade:[...]draft_from[...]"
 599                        so we'll reveal the user's actual account@thismachine
 600                        address in a Sender: header (and use it as the envelope
 601                        From: later). */
 602                     fprintf (out, "Resent-Sender: %s\n", from);
 603             }
 604             else
 605                 /* Construct a Resent-From: header. */
 606                 fprintf (out, "Resent-From: %s\n", signature);
 607 #ifdef notdef
 608             if (!(msgflags & MVIS))
 609                 fprintf (out, "Resent-Bcc: Blind Re-Distribution List: ;\n");
 610 #endif  /* notdef */
 611             break;
 612     }
 613
 614     if (badmsg)
 615         adios (NULL, "re-format message and try again");
 616 }
 617
 618
 619 static int
 620 get_header (char *header, struct headers *table)
 621 {
 622     struct headers *h;
 623
 624     for (h = table; h->value; h++)
 625         if (!mh_strcasecmp (header, h->value))
 626             return (h - table);
 627
 628     return NOTOK;
 629 }
 630
 631
 632 /*
 633  * output the address list for header "name".  The address list
 634  * is a linked list of mailname structs.  "nl" points to the head
 635  * of the list.  Alias substitution should be done on nl.
 636  */
 637 static void
 638 putadr (char *name, struct mailname *nl)
 639 {
 640     register struct mailname *mp, *mp2;
 641     register int linepos;
 642     register char *cp;
 643     int namelen;
 644
 645     fprintf (out, "%s: ", name);
 646     namelen = strlen(name) + 2;
 647     linepos = namelen;
 648
 649     for (mp = nl; mp; ) {
 650         if (linepos > MAX_SM_FIELD) {
 651                 fprintf (out, "\n%s: ", name);
 652                 linepos = namelen;
 653         }
 654         if (mp->m_nohost) {
 655             /* a local name - see if it's an alias */
 656             cp = akvalue(mp->m_mbox);
 657             if (cp == mp->m_mbox)
 658                 /* wasn't an alias - use what the user typed */
 659                 linepos = putone( mp->m_text, linepos, namelen );
 660             else
 661                 /* an alias - expand it */
 662                 while ((cp = getname(cp))) {
 663                     if (linepos > MAX_SM_FIELD) {
 664                             fprintf (out, "\n%s: ", name);
 665                             linepos = namelen;
 666                     }
 667                     mp2 = getm( cp, NULL, 0, AD_HOST, NULL);
 668                     if (akvisible()) {
 669                         mp2->m_pers = getcpy(mp->m_mbox);
 670                         linepos = putone( adrformat(mp2), linepos, namelen );
 671                     } else {
 672                         linepos = putone( mp2->m_text, linepos, namelen );
 673                     }
 674                     mnfree( mp2 );
 675                 }
 676         } else {
 677             /* not a local name - use what the user typed */
 678             linepos = putone( mp->m_text, linepos, namelen );
 679         }
 680         mp2 = mp;
 681         mp = mp->m_next;
 682         mnfree( mp2 );
 683     }
 684     putc( '\n', out );
 685 }
 686
 687 static int
 688 putone (char *adr, int pos, int indent)
 689 {
 690     register int len;
 691     static int linepos;
 692
 693     len = strlen( adr );
 694     if (pos == indent)
 695         linepos = pos;
 696     else if ( linepos+len > outputlinelen ) {
 697         fprintf ( out, ",\n%*s", indent, "");
 698         linepos = indent;
 699         pos += indent + 2;
 700     }
 701     else {
 702         fputs( ", ", out );
 703         linepos += 2;
 704         pos += 2;
 705     }
 706     fputs( adr, out );
 707
 708     linepos += len;
 709     return (pos+len);
 710 }
 711
 712
 713 static void
 714 insert_fcc (struct headers *hdr, unsigned char *pp)
 715 {
 716     unsigned char   *cp;
 717
 718     for (cp = pp; isspace (*cp); cp++)
 719         continue;
 720     for (pp += strlen (pp) - 1; pp > cp && isspace (*pp); pp--)
 721         continue;
 722     if (pp >= cp)
 723         *++pp = 0;
 724     if (*cp == 0)
 725         return;
 726
 727     if (fccind >= FCCS)
 728         adios (NULL, "too many %ss", hdr->value);
 729     fccfold[fccind++] = getcpy (cp);
 730 }
 731
 732 #if 0
 733 /* BCC GENERATION */
 734
 735 static void
 736 make_bcc_file (void)
 737 {
 738     pid_t child_id;
 739     int fd, i, status;
 740     char *vec[6];
 741     FILE * in, *out;
 742
 743     fd = mkstemp(bccfil);
 744     if (fd == -1 || (out = fdopen(fd, "w")) == NULL)
 745         adios (bccfil, "unable to create");
 746     chmod (bccfil, 0600);
 747
 748     fprintf (out, "Date: %s\n", dtimenow (0));
 749     if (msgflags & MFRM) {
 750       /* There was already a From: in the draft.  Don't add one. */
 751       if (!draft_from_masquerading)
 752         /* mts.conf didn't contain "masquerade:[...]draft_from[...]"
 753            so we'll reveal the user's actual account@thismachine
 754            address in a Sender: header (and use it as the envelope
 755            From: later). */
 756         fprintf (out, "Sender: %s\n", from);
 757     }
 758     else
 759       /* Construct a From: header. */
 760       fprintf (out, "From: %s\n", signature);
 761     if (subject)
 762         fprintf (out, "Subject: %s", subject);
 763     fprintf (out, "BCC:\n\n------- Blind-Carbon-Copy\n\n");
 764     fflush (out);
 765
 766     if (filter == NULL) {
 767         if ((fd = open (tmpfil, O_RDONLY)) == NOTOK)
 768             adios (NULL, "unable to re-open");
 769         cpydgst (fd, fileno (out), tmpfil, bccfil);
 770         close (fd);
 771     }
 772     else {
 773         vec[0] = r1bindex (mhlproc, '/');
 774
 775         for (i = 0; (child_id = vfork()) == NOTOK && i < 5; i++)
 776             sleep (5);
 777         switch (child_id) {
 778             case NOTOK:
 779                 adios ("vfork", "unable to");
 780
 781             case OK:
 782                 dup2 (fileno (out), 1);
 783
 784                 i = 1;
 785                 vec[i++] = "-forward";
 786                 vec[i++] = "-form";
 787                 vec[i++] = filter;
 788                 vec[i++] = tmpfil;
 789                 vec[i] = NULL;
 790
 791                 execvp (mhlproc, vec);
 792                 adios (mhlproc, "unable to exec");
 793
 794             default:
 795                 if (status = pidwait(child_id, OK))
 796                     admonish (NULL, "%s lost (status=0%o)", vec[0], status);
 797                 break;
 798         }
 799     }
 800
 801     fseek (out, 0L, SEEK_END);
 802     fprintf (out, "\n------- End of Blind-Carbon-Copy\n");
 803     fclose (out);
 804 }
 805 #endif  /* if 0 */
 806
 807 /* FCC INTERACTION */
 808
 809 static void
 810 file (char *path)
 811 {
 812     int i;
 813
 814     if (fccind == 0)
 815         return;
 816
 817     for (i = 0; i < fccind; i++)
 818         if (whomflg)
 819             printf ("Fcc: %s\n", fccfold[i]);
 820         else
 821             fcc (path, fccfold[i]);
 822 }
 823
 824
 825 static void
 826 fcc (char *file, char *folder)
 827 {
 828     pid_t child_id;
 829     int i, status;
 830     char fold[BUFSIZ];
 831
 832     if (verbose)
 833         printf ("%sFcc: %s\n", msgstate == resent ? "Resent-" : "", folder);
 834     fflush (stdout);
 835
 836     for (i = 0; (child_id = vfork()) == NOTOK && i < 5; i++)
 837         sleep (5);
 838     switch (child_id) {
 839         case NOTOK:
 840             if (!verbose)
 841                 fprintf (stderr, "  %sFcc %s: ",
 842                         msgstate == resent ? "Resent-" : "", folder);
 843             fprintf (verbose ? stdout : stderr, "no forks, so not ok\n");
 844             break;
 845
 846         case OK:
 847             snprintf (fold, sizeof(fold), "%s%s",
 848                     *folder == '+' || *folder == '@' ? "" : "+", folder);
 849             execlp (fileproc, r1bindex (fileproc, '/'),
 850                     "-link", "-file", file, fold, NULL);
 851             _exit (-1);
 852
 853         default:
 854             if ((status = pidwait(child_id, OK))) {
 855                 if (!verbose)
 856                     fprintf (stderr, "  %sFcc %s: ",
 857                             msgstate == resent ? "Resent-" : "", folder);
 858                 fprintf (verbose ? stdout : stderr,
 859                         " errored (0%o)\n", status);
 860             }
 861     }
 862
 863     fflush (stdout);
 864 }
 865
 866
 867 #if 0
 868
 869 /*
 870  * TERMINATION
 871  */
 872
 873 static void
 874 die (char *what, char *fmt, ...)
 875 {
 876     va_list ap;
 877
 878     va_start(ap, fmt);
 879     advertise (what, NULL, fmt, ap);
 880     va_end(ap);
 881
 882     done (1);
 883 }
 884 #endif