git.marmaro.de Git - mmh/blob - uip/spost.c

   1 /*
   2 ** spost.c -- feed messages to sendmail
   3 **
   4 ** This is a simpler, faster, replacement for "post" for use
   5 ** when "sendmail" is the transport system.
   6 **
   7 ** This code is Copyright (c) 2002, by the authors of nmh.  See the
   8 ** COPYRIGHT file in the root directory of the nmh distribution for
   9 ** complete copyright information.
  10 */
  11
  12 #include <h/mh.h>
  13 #include <signal.h>
  14 #include <h/addrsbr.h>
  15 #include <h/aliasbr.h>
  16 #include <h/dropsbr.h>
  17 #include <h/tws.h>
  18 #include <h/mts.h>
  19 #include <h/utils.h>
  20
  21 #define MAX_SM_FIELD 1476  /* < largest hdr field sendmail will accept */
  22 #define FCCS 10  /* max number of fccs allowed */
  23
  24 struct swit switches[] = {
  25 #define FILTSW  0
  26         { "filter filterfile", 0 },
  27 #define NFILTSW  1
  28         { "nofilter", 0 },
  29 #define FRMTSW  2
  30         { "format", 0 },
  31 #define NFRMTSW  3
  32         { "noformat", 0 },
  33 #define REMVSW  4
  34         { "remove", 0 },
  35 #define NREMVSW  5
  36         { "noremove", 0 },
  37 #define VERBSW  6
  38         { "verbose", 0 },
  39 #define NVERBSW  7
  40         { "noverbose", 0 },
  41 #define WATCSW  8
  42         { "watch", 0 },
  43 #define NWATCSW  9
  44         { "nowatch", 0 },
  45 #define BACKSW  10
  46         { "backup", 0 },
  47 #define NBACKSW  11
  48         { "nobackup", 0 },
  49 #define ALIASW  12
  50         { "alias aliasfile", 0 },
  51 #define NALIASW  13
  52         { "noalias", 0 },
  53 #define WIDTHSW  14
  54         { "width columns", 0 },
  55 #define VERSIONSW  15
  56         { "version", 0 },
  57 #define HELPSW  16
  58         { "help", 0 },
  59 #define DEBUGSW  17
  60         { "debug", -5 },
  61 #define DISTSW  18
  62         { "dist", -4 },  /* interface from dist */
  63 #define PUSHSW  19  /* fork to sendmail then exit */
  64         { "push", -4 },
  65 #define NPUSHSW  20  /* exec sendmail */
  66         { "nopush", -6 },
  67 #define LIBSW  21
  68         { "library directory", -7 },
  69 #define ANNOSW  22
  70         { "idanno number", -6 },
  71         { NULL, 0 }
  72 };
  73
  74
  75 /* flags for headers->flags */
  76 #define HNOP  0x0000  /* just used to keep .set around */
  77 #define HBAD  0x0001  /* bad header - don't let it through */
  78 #define HADR  0x0002  /* header has an address field */
  79 #define HSUB  0x0004  /* Subject: header */
  80 #define HTRY  0x0008  /* try to send to addrs on header */
  81 #define HBCC  0x0010  /* don't output this header */
  82 #define HMNG  0x0020  /* mung this header */
  83 #define HNGR  0x0040  /* no groups allowed in this header */
  84 #define HFCC  0x0080  /* FCC: type header */
  85 #define HNIL  0x0100  /* okay for this header not to have addrs */
  86 #define HIGN  0x0200  /* ignore this header */
  87
  88 /* flags for headers->set */
  89 #define MFRM  0x0001  /* we've seen a From: */
  90 #define MDAT  0x0002  /* we've seen a Date: */
  91 #define MRFM  0x0004  /* we've seen a Resent-From: */
  92 #define MVIS  0x0008  /* we've seen sighted addrs */
  93 #define MINV  0x0010  /* we've seen blind addrs */
  94 #define MRDT  0x0020  /* we've seen a Resent-Date: */
  95
  96 struct headers {
  97         char *value;
  98         unsigned int flags;
  99         unsigned int set;
 100 };
 101
 102
 103 static struct headers NHeaders[] = {
 104         { "Return-Path", HBAD, 0 },
 105         { "Received", HBAD, 0 },
 106         { "Reply-To", HADR|HNGR, 0 },
 107         { "From", HADR|HNGR, MFRM },
 108         { "Sender", HADR|HBAD, 0 },
 109         { "Date", HNOP, MDAT },
 110         { "Subject", HSUB, 0 },
 111         { "To", HADR|HTRY, MVIS },
 112         { "cc", HADR|HTRY, MVIS },
 113         { "Bcc", HADR|HTRY|HBCC|HNIL, MINV },
 114         { "Message-Id", HBAD, 0 },
 115         { "Fcc", HFCC, 0 },
 116         { NULL, 0, 0 }
 117 };
 118
 119 static struct headers RHeaders[] = {
 120         { "Resent-Reply-To",   HADR|HNGR, 0 },
 121         { "Resent-From", HADR|HNGR, MRFM },
 122         { "Resent-Sender", HADR|HBAD, 0 },
 123         { "Resent-Date", HNOP, MRDT },
 124         { "Resent-Subject", HSUB, 0 },
 125         { "Resent-To", HADR|HTRY, MVIS },
 126         { "Resent-cc", HADR|HTRY, MVIS },
 127         { "Resent-Bcc", HADR|HTRY|HBCC, MINV },
 128         { "Resent-Message-Id", HBAD, 0 },
 129         { "Resent-Fcc", HFCC, 0 },
 130         { "Reply-To", HADR, 0 },
 131         { "Fcc", HIGN, 0 },
 132         { NULL, 0, 0 }
 133 };
 134
 135
 136 static short fccind = 0;  /* index into fccfold[] */
 137
 138 static int badmsg = 0;  /* message has bad semantics */
 139 static int verbose = 0;  /* spell it out */
 140 static int debug = 0;  /* debugging post */
 141 static int rmflg = 1;  /* remove temporary file when done */
 142 static int watch = 0;  /* watch the delivery process */
 143 static int backflg = 0;  /* rename input file as *.bak when done */
 144 static int pushflg = 0;  /* if going to fork to sendmail */
 145 static int aliasflg = 0;  /* if going to process aliases */
 146 static int outputlinelen=72;
 147
 148 static unsigned msgflags = 0;  /* what we've seen */
 149
 150 static enum {
 151         normal, resent
 152 } msgstate = normal;
 153
 154 static char tmpfil[] = "/tmp/pstXXXXXX";
 155
 156 static char from[BUFSIZ];  /* my network address */
 157 static char signature[BUFSIZ];  /* my signature */
 158 static char *filter = NULL;  /* the filter for BCC'ing */
 159 static char *subject = NULL;  /* the subject field for BCC'ing */
 160 static char *fccfold[FCCS];  /* foldernames for FCC'ing */
 161
 162 static struct headers *hdrtab;  /* table for the message we're doing */
 163 static FILE *out;  /* output (temp) file */
 164
 165 extern char *sendmail;
 166
 167 /*
 168 ** external prototypes
 169 */
 170 extern char *getfullname(void);
 171 extern char *getusername(void);
 172
 173 extern boolean  draft_from_masquerading;  /* defined in mts.c */
 174
 175 /*
 176 ** static prototypes
 177 */
 178 static void putfmt(char *, char *, FILE *);
 179 static void start_headers(void);
 180 static void finish_headers(FILE *);
 181 static int get_header(char *, struct headers *);
 182 static void putadr(char *, struct mailname *);
 183 static int putone(char *, int, int);
 184 static void insert_fcc(struct headers *, unsigned char *);
 185 static void file(char *);
 186 static void fcc(char *, char *);
 187
 188 #if 0
 189 static void die(char *, char *, ...);
 190 static void make_bcc_file(void);
 191 #endif
 192
 193
 194 int
 195 main(int argc, char **argv)
 196 {
 197         int state, i, pid, compnum;
 198         char *cp, *msg = NULL, **argp, **arguments;
 199         char *sargv[16], buf[BUFSIZ], name[NAMESZ];
 200         FILE *in;
 201
 202 #ifdef LOCALE
 203         setlocale(LC_ALL, "");
 204 #endif
 205         invo_name = mhbasename(argv[0]);
 206
 207         /* foil search of user profile/context */
 208         if (context_foil(NULL) == -1)
 209                 done(1);
 210
 211         mts_init(invo_name);
 212         arguments = getarguments(invo_name, argc, argv, 0);
 213         argp = arguments;
 214
 215         while ((cp = *argp++)) {
 216                 if (*cp == '-') {
 217                         switch (smatch(++cp, switches)) {
 218                                 case AMBIGSW:
 219                                         ambigsw(cp, switches);
 220                                         done(1);
 221                                 case UNKWNSW:
 222                                         adios(NULL, "-%s unknown", cp);
 223
 224                                 case HELPSW:
 225                                         snprintf(buf, sizeof(buf), "%s [switches] file", invo_name);
 226                                         print_help(buf, switches, 1);
 227                                         done(1);
 228                                 case VERSIONSW:
 229                                         print_version(invo_name);
 230                                         done(1);
 231
 232                                 case DEBUGSW:
 233                                         debug++;
 234                                         continue;
 235
 236                                 case DISTSW:
 237                                         msgstate = resent;
 238                                         continue;
 239
 240                                 case FILTSW:
 241                                         if (!(filter = *argp++) ||
 242                                                         *filter == '-')
 243                                                 adios(NULL, "missing argument to %s", argp[-2]);
 244                                         continue;
 245                                 case NFILTSW:
 246                                         filter = NULL;
 247                                         continue;
 248
 249                                 case REMVSW:
 250                                         rmflg++;
 251                                         continue;
 252                                 case NREMVSW:
 253                                         rmflg = 0;
 254                                         continue;
 255
 256                                 case BACKSW:
 257                                         backflg++;
 258                                         continue;
 259                                 case NBACKSW:
 260                                         backflg = 0;
 261                                         continue;
 262
 263                                 case VERBSW:
 264                                         verbose++;
 265                                         continue;
 266                                 case NVERBSW:
 267                                         verbose = 0;
 268                                         continue;
 269
 270                                 case WATCSW:
 271                                         watch++;
 272                                         continue;
 273                                 case NWATCSW:
 274                                         watch = 0;
 275                                         continue;
 276
 277                                 case PUSHSW:
 278                                         pushflg++;
 279                                         continue;
 280                                 case NPUSHSW:
 281                                         pushflg = 0;
 282                                         continue;
 283
 284                                 case ALIASW:
 285                                         if (!(cp = *argp++) || *cp == '-')
 286                                                 adios(NULL, "missing argument to %s", argp[-2]);
 287                                         aliasflg = 1;
 288                                         if ((state = alias(cp)) != AK_OK)
 289                                                 adios(NULL, "aliasing error in file %s - %s", cp, akerror(state) );
 290                                         continue;
 291                                 case NALIASW:
 292                                         aliasflg = 0;
 293                                         continue;
 294
 295                                 case WIDTHSW:
 296                                         if (!(cp = *argp++) || *cp == '-')
 297                                                 adios(NULL, "missing argument to %s", argp[-2]);
 298                                         outputlinelen = atoi(cp);
 299                                         if (outputlinelen <= 10)
 300                                                 outputlinelen = 72;
 301                                         continue;
 302
 303                                 case LIBSW:
 304                                         if (!(cp = *argp++) || *cp == '-')
 305                                                 adios(NULL, "missing argument to %s", argp[-2]);
 306                                         /* create a minimal context */
 307                                         if (context_foil(cp) == -1)
 308                                                 done(1);
 309                                         continue;
 310
 311                                 case ANNOSW:
 312                                         /* -idanno switch ignored */
 313                                         if (!(cp = *argp++) || *cp == '-')
 314                                                 adios(NULL, "missing argument to %s", argp[-2]);
 315                                         continue;
 316                         }
 317                 }
 318                 if (msg)
 319                         adios(NULL, "only one message at a time!");
 320                 else
 321                         msg = cp;
 322         }
 323
 324         if (!msg)
 325                 adios(NULL, "usage: %s [switches] file", invo_name);
 326
 327         if ((in = fopen(msg, "r")) == NULL)
 328                 adios(msg, "unable to open");
 329
 330         start_headers();
 331         if (debug) {
 332                 verbose++;
 333                 out = stdout;
 334         }
 335         else {
 336 #ifdef HAVE_MKSTEMP
 337                         if ((out = fdopen( mkstemp(tmpfil), "w" )) == NULL )
 338                                 adios(tmpfil, "unable to create");
 339 #else
 340                         mktemp(tmpfil);
 341                         if ((out = fopen(tmpfil, "w")) == NULL)
 342                                 adios(tmpfil, "unable to create");
 343                         chmod(tmpfil, 0600);
 344 #endif
 345                 }
 346
 347         hdrtab = (msgstate == normal) ? NHeaders : RHeaders;
 348
 349         for (compnum = 1, state = FLD;;) {
 350                 switch (state = m_getfld(state, name, buf, sizeof(buf), in)) {
 351                         case FLD:
 352                                 compnum++;
 353                                 putfmt(name, buf, out);
 354                                 continue;
 355
 356                         case FLDPLUS:
 357                                 compnum++;
 358                                 cp = add(buf, cp);
 359                                 while (state == FLDPLUS) {
 360                                         state = m_getfld(state, name, buf,
 361                                                         sizeof(buf), in);
 362                                         cp = add(buf, cp);
 363                                 }
 364                                 putfmt(name, cp, out);
 365                                 free(cp);
 366                                 continue;
 367
 368                         case BODY:
 369                                 finish_headers(out);
 370                                 fprintf(out, "\n%s", buf);
 371                                 while (state == BODY) {
 372                                         state = m_getfld(state, name, buf,
 373                                                         sizeof(buf), in);
 374                                         fputs(buf, out);
 375                                 }
 376                                 break;
 377
 378                         case FILEEOF:
 379                                 finish_headers(out);
 380                                 break;
 381
 382                         case LENERR:
 383                         case FMTERR:
 384                                 adios(NULL, "message format error in component #%d", compnum);
 385
 386                         default:
 387                                 adios(NULL, "getfld() returned %d", state);
 388                 }
 389                 break;
 390         }
 391
 392         fclose(in);
 393         if (backflg) {
 394                 strncpy(buf, m_backup(msg), sizeof(buf));
 395                 if (rename(msg, buf) == NOTOK)
 396                         advise(buf, "unable to rename %s to", msg);
 397         }
 398
 399         if (debug) {
 400                 done(0);
 401         }
 402         else
 403                 fclose(out);
 404
 405         file(tmpfil);
 406
 407         /*
 408         ** re-open the temp file, unlink it and exec sendmail, giving it
 409         ** the msg temp file as std in.
 410         */
 411         if (freopen(tmpfil, "r", stdin) == NULL)
 412                 adios(tmpfil, "can't reopen for sendmail");
 413         if (rmflg)
 414                 unlink(tmpfil);
 415
 416         argp = sargv;
 417         *argp++ = "send-mail";
 418         *argp++ = "-m";  /* send to me too */
 419         *argp++ = "-t";  /* read msg for recipients */
 420         *argp++ = "-i";  /* don't stop on "." */
 421         if (watch || verbose)
 422                 *argp++ = "-v";
 423         *argp = NULL;
 424
 425         if (pushflg && !(watch || verbose)) {
 426                 /* fork to a child to run sendmail */
 427                 for (i=0; (pid = vfork()) == NOTOK && i < 5; i++)
 428                         sleep(5);
 429                 switch (pid) {
 430                         case NOTOK:
 431                                 fprintf(verbose ? stdout : stderr,
 432                                                 "%s: can't fork to %s\n",
 433                                                 invo_name, sendmail);
 434                                 exit(-1);
 435                         case OK:
 436                                 /* we're the child .. */
 437                                 break;
 438                         default:
 439                                 exit(0);
 440                 }
 441         }
 442         execv(sendmail, sargv);
 443         adios(sendmail, "can't exec");
 444         return 0;  /* dead code to satisfy the compiler */
 445 }
 446
 447 /* DRAFT GENERATION */
 448
 449 static void
 450 putfmt(char *name, char *str, FILE *out)
 451 {
 452         int i;
 453         char *cp, *pp;
 454         struct headers *hdr;
 455
 456         while (*str == ' ' || *str == '\t')
 457                 str++;
 458
 459         if ((i = get_header(name, hdrtab)) == NOTOK) {
 460                 fprintf(out, "%s: %s", name, str);
 461                 return;
 462         }
 463
 464         hdr = &hdrtab[i];
 465         if (hdr->flags & HIGN)
 466                 return;
 467         if (hdr->flags & HBAD) {
 468                 advise(NULL, "illegal header line -- %s:", name);
 469                 badmsg++;
 470                 return;
 471         }
 472         msgflags |= hdr->set;
 473
 474         if (hdr->flags & HSUB)
 475                 subject = subject ? add(str, add("\t", subject)) :
 476                                 getcpy(str);
 477
 478         if (hdr->flags & HFCC) {
 479                 if ((cp = strrchr(str, '\n')))
 480                         *cp = 0;
 481                 for (cp = pp = str; (cp = strchr(pp, ',')); pp = cp) {
 482                         *cp++ = 0;
 483                         insert_fcc(hdr, pp);
 484                 }
 485                 insert_fcc(hdr, pp);
 486                 return;
 487         }
 488
 489 #ifdef notdef
 490         if (hdr->flags & HBCC) {
 491                 insert_bcc(str);
 492                 return;
 493         }
 494 #endif /* notdef */
 495
 496         if (*str != '\n' && *str != '\0') {
 497                 if (aliasflg && hdr->flags & HTRY) {
 498                         /*
 499                         ** this header contains address(es) that we have to do
 500                         ** alias expansion on.  Because of the saved state in
 501                         ** getname we have to put all the addresses into a
 502                         ** list. We then let putadr munch on that list,
 503                         ** possibly expanding aliases.
 504                         **/
 505                         register struct mailname *f = 0;
 506                         register struct mailname *mp = 0;
 507
 508                         while ((cp = getname(str))) {
 509                                 mp = getm( cp, NULL, 0, AD_HOST, NULL);
 510                                 if (f == 0) {
 511                                         f = mp;
 512                                         mp->m_next = mp;
 513                                 } else {
 514                                         mp->m_next = f->m_next;
 515                                         f->m_next = mp;
 516                                         f = mp;
 517                                 }
 518                         }
 519                         f = mp->m_next; mp->m_next = 0;
 520                         putadr( name, f );
 521                 } else {
 522                         /*
 523                         ** The author(s) of spost decided that alias
 524                         ** substitution wasn't necessary for the non-HTRY
 525                         ** headers.  Unfortunately, one of those headers
 526                         ** is "From:", and having alias substitution
 527                         ** work on that is extremely useful for someone
 528                         ** with a lot of POP3 email accounts or aliases.
 529                         ** post supports aliasing of "From:"...
 530                         **
 531                         ** Since "From:"-processing is incompletely
 532                         ** implemented in this unsupported and
 533                         ** undocumented spost backend, I'm not
 534                         ** going to take the time to implement my new
 535                         ** draft-From:-based email address masquerading.
 536                         ** If I do ever implement it here, I'd almost
 537                         ** certainly want to implement "From:" line
 538                         ** alias processing as well.
 539                         ** -- Dan Harkless <dan-nmh@dilvish.speed.net>
 540                         */
 541                         fprintf(out, "%s: %s", name, str );
 542                 }
 543         }
 544 }
 545
 546
 547 static void
 548 start_headers(void)
 549 {
 550         char *cp;
 551         char sigbuf[BUFSIZ];
 552
 553         strncpy(from, getusername(), sizeof(from));
 554
 555         if ((cp = getfullname()) && *cp) {
 556                 strncpy(sigbuf, cp, sizeof(sigbuf));
 557                 snprintf(signature, sizeof(signature), "%s <%s>",
 558                                 sigbuf,  from);
 559         } else
 560                 snprintf(signature, sizeof(signature), "%s",  from);
 561 }
 562
 563
 564 static void
 565 finish_headers(FILE *out)
 566 {
 567         switch (msgstate) {
 568                 case normal:
 569                         if (!(msgflags & MDAT))
 570                                 fprintf(out, "Date: %s\n", dtimenow(0));
 571
 572                         if (msgflags & MFRM) {
 573                                 /*
 574                                 ** There was already a From: in the draft.
 575                                 ** Don't add one.
 576                                 */
 577                                 if (!draft_from_masquerading)
 578                                         /*
 579                                         ** mts.conf didn't contain
 580                                         ** "masquerade:[...]draft_from[...]"
 581                                         ** so we'll reveal the user's
 582                                         ** actual account@thismachine
 583                                         ** address in a Sender: header
 584                                         ** (and use it as the envelope
 585                                         ** From: later).
 586                                         */
 587                                         fprintf(out, "Sender: %s\n", from);
 588                         } else
 589                                 fprintf(out, "From: %s\n", signature);
 590
 591 #ifdef notdef
 592                         if (!(msgflags & MVIS))
 593                                 fprintf(out, "Bcc: Blind Distribution List: ;\n");
 594 #endif /* notdef */
 595                         break;
 596
 597                 case resent:
 598                         if (!(msgflags & MRDT))
 599                                 fprintf(out, "Resent-Date: %s\n", dtimenow(0));
 600                         if (msgflags & MRFM) {
 601                                 /*
 602                                 ** There was already a Resent-From: in draft.
 603                                 ** Don't add one.
 604                                 */
 605                                 if (!draft_from_masquerading)
 606                                         /*
 607                                         ** mts.conf didn't contain
 608                                         ** "masquerade:[...]draft_from[...]"
 609                                         ** so we'll reveal the user's
 610                                         ** actual account@thismachine
 611                                         ** address in a Sender: header
 612                                         ** (and use it as the envelope
 613                                         ** From: later).
 614                                         */
 615                                         fprintf(out, "Resent-Sender: %s\n",
 616                                                         from);
 617                         } else
 618                                 /* Construct a Resent-From: header. */
 619                                 fprintf(out, "Resent-From: %s\n", signature);
 620 #ifdef notdef
 621                         if (!(msgflags & MVIS))
 622                                 fprintf(out, "Resent-Bcc: Blind Re-Distribution List: ;\n");
 623 #endif /* notdef */
 624                         break;
 625         }
 626
 627         if (badmsg)
 628                 adios(NULL, "re-format message and try again");
 629 }
 630
 631
 632 static int
 633 get_header(char *header, struct headers *table)
 634 {
 635         struct headers *h;
 636
 637         for (h = table; h->value; h++)
 638                 if (!mh_strcasecmp(header, h->value))
 639                         return (h - table);
 640
 641         return NOTOK;
 642 }
 643
 644
 645 /*
 646 ** output the address list for header "name".  The address list
 647 ** is a linked list of mailname structs.  "nl" points to the head
 648 ** of the list.  Alias substitution should be done on nl.
 649 */
 650 static void
 651 putadr(char *name, struct mailname *nl)
 652 {
 653         register struct mailname *mp, *mp2;
 654         register int linepos;
 655         register char *cp;
 656         int namelen;
 657
 658         fprintf(out, "%s: ", name);
 659         namelen = strlen(name) + 2;
 660         linepos = namelen;
 661
 662         for (mp = nl; mp; ) {
 663                 if (linepos > MAX_SM_FIELD) {
 664                         fprintf(out, "\n%s: ", name);
 665                         linepos = namelen;
 666                 }
 667                 if (mp->m_nohost) {
 668                         /* a local name - see if it's an alias */
 669                         cp = akvalue(mp->m_mbox);
 670                         if (cp == mp->m_mbox)
 671                                 /* wasn't an alias - use what the user typed */
 672                                 linepos = putone(mp->m_text, linepos, namelen);
 673                         else
 674                                 /* an alias - expand it */
 675                                 while ((cp = getname(cp))) {
 676                                         if (linepos > MAX_SM_FIELD) {
 677                                                         fprintf(out, "\n%s: ", name);
 678                                                         linepos = namelen;
 679                                         }
 680                                         mp2 = getm( cp, NULL, 0, AD_HOST, NULL);
 681                                         if (akvisible()) {
 682                                                 mp2->m_pers = getcpy(mp->m_mbox);
 683                                                 linepos = putone( adrformat(mp2), linepos, namelen );
 684                                         } else {
 685                                                 linepos = putone( mp2->m_text, linepos, namelen );
 686                                         }
 687                                         mnfree( mp2 );
 688                                 }
 689                 } else {
 690                         /* not a local name - use what the user typed */
 691                         linepos = putone( mp->m_text, linepos, namelen );
 692                 }
 693                 mp2 = mp;
 694                 mp = mp->m_next;
 695                 mnfree( mp2 );
 696         }
 697         putc( '\n', out );
 698 }
 699
 700 static int
 701 putone(char *adr, int pos, int indent)
 702 {
 703         register int len;
 704         static int linepos;
 705
 706         len = strlen( adr );
 707         if (pos == indent)
 708                 linepos = pos;
 709         else if (linepos+len > outputlinelen) {
 710                 fprintf( out, ",\n%*s", indent, "");
 711                 linepos = indent;
 712                 pos += indent + 2;
 713         } else {
 714                 fputs( ", ", out );
 715                 linepos += 2;
 716                 pos += 2;
 717         }
 718         fputs( adr, out );
 719
 720         linepos += len;
 721         return (pos+len);
 722 }
 723
 724
 725 static void
 726 insert_fcc(struct headers *hdr, unsigned char *pp)
 727 {
 728         unsigned char   *cp;
 729
 730         for (cp = pp; isspace(*cp); cp++)
 731                 continue;
 732         for (pp += strlen(pp) - 1; pp > cp && isspace(*pp); pp--)
 733                 continue;
 734         if (pp >= cp)
 735                 *++pp = 0;
 736         if (*cp == 0)
 737                 return;
 738
 739         if (fccind >= FCCS)
 740                 adios(NULL, "too many %ss", hdr->value);
 741         fccfold[fccind++] = getcpy(cp);
 742 }
 743
 744 #if 0
 745 /* BCC GENERATION */
 746
 747 static void
 748 make_bcc_file(void)
 749 {
 750         pid_t child_id;
 751         int fd, i, status;
 752         char *vec[6];
 753         FILE * in, *out;
 754
 755 #ifdef HAVE_MKSTEMP
 756         fd = mkstemp(bccfil);
 757         if (fd == -1 || (out = fdopen(fd, "w")) == NULL)
 758                 adios(bccfil, "unable to create");
 759 #else
 760         mktemp(bccfil);
 761         if ((out = fopen(bccfil, "w")) == NULL)
 762                 adios(bccfil, "unable to create");
 763 #endif
 764         chmod(bccfil, 0600);
 765
 766         fprintf(out, "Date: %s\n", dtimenow(0));
 767         if (msgflags & MFRM) {
 768           /* There was already a From: in the draft.  Don't add one. */
 769           if (!draft_from_masquerading)
 770                 /*
 771                 ** mts.conf didn't contain "masquerade:[...]draft_from[...]"
 772                 ** so we'll reveal the user's actual account@thismachine
 773                 ** address in a Sender: header (and use it as the envelope
 774                 ** From: later).
 775                 */
 776                 fprintf(out, "Sender: %s\n", from);
 777         } else
 778                 /* Construct a From: header. */
 779                 fprintf(out, "From: %s\n", signature);
 780         if (subject)
 781                 fprintf(out, "Subject: %s", subject);
 782         fprintf(out, "BCC:\n\n------- Blind-Carbon-Copy\n\n");
 783         fflush(out);
 784
 785         if (filter == NULL) {
 786                 if ((fd = open(tmpfil, O_RDONLY)) == NOTOK)
 787                         adios(NULL, "unable to re-open");
 788                 cpydgst(fd, fileno(out), tmpfil, bccfil);
 789                 close(fd);
 790         } else {
 791                 vec[0] = mhbasename(mhlproc);
 792
 793                 for (i = 0; (child_id = vfork()) == NOTOK && i < 5; i++)
 794                         sleep(5);
 795                 switch (child_id) {
 796                         case NOTOK:
 797                                 adios("vfork", "unable to");
 798
 799                         case OK:
 800                                 dup2(fileno(out), 1);
 801
 802                                 i = 1;
 803                                 vec[i++] = "-forward";
 804                                 vec[i++] = "-form";
 805                                 vec[i++] = filter;
 806                                 vec[i++] = tmpfil;
 807                                 vec[i] = NULL;
 808
 809                                 execvp(mhlproc, vec);
 810                                 adios(mhlproc, "unable to exec");
 811
 812                         default:
 813                                 if (status = pidwait(child_id, OK))
 814                                         admonish(NULL, "%s lost (status=0%o)",
 815                                                         vec[0], status);
 816                                 break;
 817                 }
 818         }
 819
 820         fseek(out, 0L, SEEK_END);
 821         fprintf(out, "\n------- End of Blind-Carbon-Copy\n");
 822         fclose(out);
 823 }
 824 #endif /* if 0 */
 825
 826 /* FCC INTERACTION */
 827
 828 static void
 829 file(char *path)
 830 {
 831         int i;
 832
 833         if (fccind == 0)
 834                 return;
 835
 836         for (i = 0; i < fccind; i++)
 837                 fcc(path, fccfold[i]);
 838 }
 839
 840
 841 static void
 842 fcc(char *file, char *folder)
 843 {
 844         pid_t child_id;
 845         int i, status;
 846         char fold[BUFSIZ];
 847
 848         if (verbose)
 849                 printf("%sFcc: %s\n", msgstate == resent ? "Resent-" : "",
 850                                 folder);
 851         fflush(stdout);
 852
 853         for (i = 0; (child_id = vfork()) == NOTOK && i < 5; i++)
 854                 sleep(5);
 855         switch (child_id) {
 856                 case NOTOK:
 857                         if (!verbose)
 858                                 fprintf(stderr, "  %sFcc %s: ",
 859                                                 msgstate == resent ?
 860                                                 "Resent-" : "", folder);
 861                         fprintf(verbose ? stdout : stderr, "no forks, so not ok\n");
 862                         break;
 863
 864                 case OK:
 865                         snprintf(fold, sizeof(fold), "%s%s",
 866                                 *folder == '+' || *folder == '@' ? "" : "+", folder);
 867                         execlp(fileproc, mhbasename(fileproc),
 868                                 "-link", "-file", file, fold, NULL);
 869                         _exit(-1);
 870
 871                 default:
 872                         if ((status = pidwait(child_id, OK))) {
 873                                 if (!verbose)
 874                                         fprintf(stderr, "  %sFcc %s: ",
 875                                                         msgstate == resent ?
 876                                                         "Resent-" : "",
 877                                                         folder);
 878                                 fprintf(verbose ? stdout : stderr,
 879                                                 " errored (0%o)\n", status);
 880                         }
 881         }
 882
 883         fflush(stdout);
 884 }
 885
 886
 887 #if 0
 888
 889 /*
 890 ** TERMINATION
 891 */
 892
 893 static void
 894 die(char *what, char *fmt, ...)
 895 {
 896         va_list ap;
 897
 898         va_start(ap, fmt);
 899         advertise(what, NULL, fmt, ap);
 900         va_end(ap);
 901
 902         done(1);
 903 }
 904 #endif