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/utils.h>
  19
  20 #define MAX_SM_FIELD 1476  /* < largest hdr field sendmail will accept */
  21 #define FCCS 10  /* max number of fccs allowed */
  22
  23 struct swit switches[] = {
  24 #define VERBSW  0
  25         { "verbose", 0 },
  26 #define NVERBSW  1
  27         { "noverbose", 0 },
  28 #define WATCSW  2
  29         { "watch", 0 },
  30 #define NWATCSW  3
  31         { "nowatch", 0 },
  32 #define ALIASW  4
  33         { "alias aliasfile", 0 },
  34 #define NALIASW  5
  35         { "noalias", 0 },
  36 #define VERSIONSW  6
  37         { "version", 0 },
  38 #define HELPSW  7
  39         { "help", 0 },
  40 #define DEBUGSW  8
  41         { "debug", -5 },
  42 #define DISTSW  9
  43         { "dist", -4 },  /* interface from dist */
  44 #define PUSHSW  10  /* fork to sendmail then exit */
  45         { "push", -4 },
  46 #define NPUSHSW  11  /* exec sendmail */
  47         { "nopush", -6 },
  48 #define LIBSW  12
  49         { "library directory", -7 },
  50         { NULL, 0 }
  51 };
  52
  53
  54 /* flags for headers->flags */
  55 #define HNOP  0x0000  /* just used to keep .set around */
  56 #define HBAD  0x0001  /* bad header - don't let it through */
  57 #define HADR  0x0002  /* header has an address field */
  58 #define HSUB  0x0004  /* Subject: header */
  59 #define HTRY  0x0008  /* try to send to addrs on header */
  60 #define HBCC  0x0010  /* don't output this header */
  61 #define HNGR  0x0020  /* no groups allowed in this header */
  62 #define HFCC  0x0040  /* FCC: type header */
  63 #define HNIL  0x0080  /* okay for this header not to have addrs */
  64 #define HIGN  0x0100  /* ignore this header */
  65
  66 /* flags for headers->set */
  67 #define MFRM  0x0001  /* we've seen a From: */
  68 #define MDAT  0x0002  /* we've seen a Date: */
  69 #define MRFM  0x0004  /* we've seen a Resent-From: */
  70 #define MVIS  0x0008  /* we've seen sighted addrs */
  71 #define MINV  0x0010  /* we've seen blind addrs */
  72 #define MRDT  0x0020  /* we've seen a Resent-Date: */
  73
  74 struct headers {
  75         char *value;
  76         unsigned int flags;
  77         unsigned int set;
  78 };
  79
  80
  81 static struct headers NHeaders[] = {
  82         { "Return-Path", HBAD, 0 },
  83         { "Received", HBAD, 0 },
  84         { "Reply-To", HADR|HNGR, 0 },
  85         { "From", HADR|HNGR, MFRM },
  86         { "Sender", HADR|HBAD, 0 },
  87         { "Date", HNOP, MDAT },
  88         { "Subject", HSUB, 0 },
  89         { "To", HADR|HTRY, MVIS },
  90         { "Cc", HADR|HTRY, MVIS },
  91         { "Bcc", HADR|HTRY|HBCC|HNIL, MINV },
  92         { "Message-Id", HBAD, 0 },
  93         { "Fcc", HFCC, 0 },
  94         { NULL, 0, 0 }
  95 };
  96
  97 static struct headers RHeaders[] = {
  98         { "Resent-Reply-To",   HADR|HNGR, 0 },
  99         { "Resent-From", HADR|HNGR, MRFM },
 100         { "Resent-Sender", HADR|HBAD, 0 },
 101         { "Resent-Date", HNOP, MRDT },
 102         { "Resent-Subject", HSUB, 0 },
 103         { "Resent-To", HADR|HTRY, MVIS },
 104         { "Resent-Cc", HADR|HTRY, MVIS },
 105         { "Resent-Bcc", HADR|HTRY|HBCC, MINV },
 106         { "Resent-Message-Id", HBAD, 0 },
 107         { "Resent-Fcc", HFCC, 0 },
 108         { "Reply-To", HADR, 0 },
 109         { "Fcc", HIGN, 0 },
 110         { NULL, 0, 0 }
 111 };
 112
 113
 114 static int badmsg = 0;  /* message has bad semantics */
 115 static int verbose = 0;  /* spell it out */
 116 static int debug = 0;  /* debugging post */
 117 static int watch = 0;  /* watch the delivery process */
 118 static int pushflg = 0;  /* if going to fork to sendmail */
 119 static int aliasflg = 0;  /* if going to process aliases */
 120
 121 static unsigned msgflags = 0;  /* what we've seen */
 122
 123 static enum {
 124         normal, resent
 125 } msgstate = normal;
 126
 127 static char tmpfil[] = "/tmp/spost-XXXXXX";
 128 static char bccfil[] = "/tmp/spost-bcc-XXXXXX";
 129
 130 static char *subject = NULL;  /* the subject field for BCC'ing */
 131 static char *fccfold[FCCS];  /* foldernames for FCC'ing */
 132 static short fccind = 0;  /* index into fccfold[] */
 133 struct mailname *bccs = NULL;
 134
 135 static struct headers *hdrtab;  /* table for the message we're doing */
 136 static FILE *out;  /* output (temp) file */
 137
 138 extern char *sendmail;
 139
 140 /*
 141 ** static prototypes
 142 */
 143 static void putfmt(char *, char *, FILE *);
 144 static void finish_headers(FILE *);
 145 static int get_header(char *, struct headers *);
 146 static void putadr(char *, struct mailname *);
 147 static int putone(char *, int, int);
 148 static void insert_fcc(char *, unsigned char *);
 149 static void fcc(char *, char *);
 150 static void make_bcc_draft(char *);
 151
 152
 153 int
 154 main(int argc, char **argv)
 155 {
 156         int state, i, pid, compnum;
 157         char *cp, *msg = NULL, **argp, **arguments;
 158         char *sargv[16], buf[BUFSIZ], name[NAMESZ];
 159         FILE *in;
 160
 161 #ifdef LOCALE
 162         setlocale(LC_ALL, "");
 163 #endif
 164         invo_name = mhbasename(argv[0]);
 165
 166         /* foil search of user profile/context */
 167         if (context_foil(NULL) == -1)
 168                 done(1);
 169
 170         arguments = getarguments(invo_name, argc, argv, 0);
 171         argp = arguments;
 172
 173         while ((cp = *argp++)) {
 174                 if (*cp == '-') {
 175                         switch (smatch(++cp, switches)) {
 176                         case AMBIGSW:
 177                                 ambigsw(cp, switches);
 178                                 done(1);
 179                         case UNKWNSW:
 180                                 adios(NULL, "-%s unknown", cp);
 181
 182                         case HELPSW:
 183                                 snprintf(buf, sizeof(buf),
 184                                                 "%s [switches] file",
 185                                                 invo_name);
 186                                 print_help(buf, switches, 1);
 187                                 done(1);
 188                         case VERSIONSW:
 189                                 print_version(invo_name);
 190                                 done(1);
 191
 192                         case DEBUGSW:
 193                                 debug++;
 194                                 continue;
 195
 196                         case DISTSW:
 197                                 msgstate = resent;
 198                                 continue;
 199
 200                         case VERBSW:
 201                                 verbose++;
 202                                 continue;
 203                         case NVERBSW:
 204                                 verbose = 0;
 205                                 continue;
 206
 207                         case WATCSW:
 208                                 watch++;
 209                                 continue;
 210                         case NWATCSW:
 211                                 watch = 0;
 212                                 continue;
 213
 214                         case PUSHSW:
 215                                 pushflg++;
 216                                 continue;
 217                         case NPUSHSW:
 218                                 pushflg = 0;
 219                                 continue;
 220
 221                         case ALIASW:
 222                                 if (!(cp = *argp++) || *cp == '-')
 223                                         adios(NULL, "missing argument to %s",
 224                                                         argp[-2]);
 225                                 aliasflg = 1;
 226                                 if ((state = alias(cp)) != AK_OK)
 227                                         adios(NULL, "aliasing error in file %s - %s", cp, akerror(state));
 228                                 continue;
 229                         case NALIASW:
 230                                 aliasflg = 0;
 231                                 continue;
 232
 233                         case LIBSW:
 234                                 if (!(cp = *argp++) || *cp == '-')
 235                                         adios(NULL, "missing argument to %s",
 236                                                         argp[-2]);
 237                                 /* create a minimal context */
 238                                 if (context_foil(cp) == -1)
 239                                         done(1);
 240                                 continue;
 241                         }
 242                 }
 243                 if (msg)
 244                         adios(NULL, "only one message at a time!");
 245                 else
 246                         msg = cp;
 247         }
 248
 249         if (!msg)
 250                 adios(NULL, "usage: %s [switches] file", invo_name);
 251
 252         if ((in = fopen(msg, "r")) == NULL)
 253                 adios(msg, "unable to open");
 254
 255         if (debug) {
 256                 verbose++;
 257                 out = stdout;
 258         } else {
 259 #ifdef HAVE_MKSTEMP
 260                 if ((out = fdopen(mkstemp(tmpfil), "w")) == NULL)
 261                         adios(tmpfil, "unable to create");
 262 #else
 263                 mktemp(tmpfil);
 264                 if ((out = fopen(tmpfil, "w")) == NULL)
 265                         adios(tmpfil, "unable to create");
 266                 chmod(tmpfil, 0600);
 267 #endif
 268         }
 269
 270         hdrtab = (msgstate == normal) ? NHeaders : RHeaders;
 271
 272         for (compnum = 1, state = FLD;;) {
 273                 switch (state = m_getfld(state, name, buf, sizeof(buf), in)) {
 274                 case FLD:
 275                         compnum++;
 276                         putfmt(name, buf, out);
 277                         continue;
 278
 279                 case FLDPLUS:
 280                         compnum++;
 281                         cp = add(buf, cp);
 282                         while (state == FLDPLUS) {
 283                                 state = m_getfld(state, name, buf,
 284                                                 sizeof(buf), in);
 285                                 cp = add(buf, cp);
 286                         }
 287                         putfmt(name, cp, out);
 288                         free(cp);
 289                         continue;
 290
 291                 case BODY:
 292                         finish_headers(out);
 293                         fprintf(out, "\n%s", buf);
 294                         while (state == BODY) {
 295                                 state = m_getfld(state, name, buf,
 296                                                 sizeof(buf), in);
 297                                 fputs(buf, out);
 298                         }
 299                         break;
 300
 301                 case FILEEOF:
 302                         finish_headers(out);
 303                         break;
 304
 305                 case LENERR:
 306                 case FMTERR:
 307                         adios(NULL, "message format error in component #%d",
 308                                         compnum);
 309
 310                 default:
 311                         adios(NULL, "getfld() returned %d", state);
 312                 }
 313                 break;
 314         }
 315         fclose(in);
 316
 317         if (debug) {
 318                 /* stop here */
 319                 done(0);
 320         }
 321
 322         fclose(out);
 323
 324         /* process Fcc */
 325         for (i=0; i<fccind; i++) {
 326                 fcc(tmpfil, fccfold[i]);
 327         }
 328
 329         /* process Bcc */
 330         if (bccs) {
 331                 make_bcc_draft(tmpfil);
 332         }
 333
 334         /*
 335         ** re-open the temp file, unlink it and exec sendmail, giving it
 336         ** the msg temp file as std in.
 337         */
 338         if (!freopen(tmpfil, "r", stdin)) {
 339                 adios(tmpfil, "can't reopen for sendmail");
 340         }
 341         unlink(tmpfil);
 342
 343         argp = sargv;
 344         *argp++ = "send-mail";
 345         *argp++ = "-m";  /* send to me too */
 346         *argp++ = "-t";  /* read msg for recipients */
 347         *argp++ = "-i";  /* don't stop on "." */
 348         if (watch || verbose) {
 349                 *argp++ = "-v";
 350                 pushflg = 0;
 351         }
 352         *argp = NULL;
 353
 354         if (pushflg) {
 355                 /* fork to a child to run sendmail */
 356                 for (i=0; (pid = fork()) == NOTOK && i < 5; i++)
 357                         sleep(5);
 358                 switch (pid) {
 359                 case NOTOK:
 360                         fprintf(verbose ? stdout : stderr,
 361                                         "%s: can't fork to %s\n",
 362                                         invo_name, sendmail);
 363                         exit(-1);
 364                 case OK:
 365                         /* we're the child .. */
 366                         break;
 367                 default:
 368                         exit(0);
 369                 }
 370         }
 371
 372         if (0 /*bccs*/) {
 373                 /* fork to a child to run sendmail */
 374                 for (i=0; (pid = fork()) == NOTOK && i < 5; i++)
 375                         sleep(5);
 376                 switch (pid) {
 377                 case NOTOK:
 378                         fprintf(verbose ? stdout : stderr,
 379                                         "%s: can't fork to %s\n",
 380                                         invo_name, sendmail);
 381                         exit(-1);
 382                 case OK:
 383                         /* we're the child .. */
 384                         exit(0);
 385                 default:
 386                         exit(0);
 387                 }
 388         }
 389
 390         execv(sendmail, sargv);
 391         adios(sendmail, "can't exec");
 392         return 0;  /* dead code to satisfy the compiler */
 393 }
 394
 395 /* DRAFT GENERATION */
 396
 397 static void
 398 putfmt(char *name, char *str, FILE *out)
 399 {
 400         int i;
 401         char *cp, *pp;
 402         struct headers *hdr;
 403
 404         while (*str == ' ' || *str == '\t')
 405                 str++;
 406
 407         if ((i = get_header(name, hdrtab)) == NOTOK) {
 408                 /* some boring header: push it through */
 409                 fprintf(out, "%s: %s", name, str);
 410                 return;
 411         }
 412         /* one of the interesting headers */
 413         hdr = &hdrtab[i];
 414
 415         if (hdr->flags & HIGN) {
 416                 return;
 417         }
 418         if (hdr->flags & HBAD) {
 419                 advise(NULL, "illegal header line -- %s:", name);
 420                 badmsg++;
 421                 return;
 422         }
 423         msgflags |= hdr->set;
 424
 425         if (hdr->flags & HSUB) {
 426                 if (subject) {
 427                         /* concatenate mupliple subject */
 428                         char *cp = concat(subject, "\t", str, NULL);
 429                         free(subject);
 430                         subject = cp;
 431                 } else {
 432                         subject = getcpy(str);
 433                 }
 434         }
 435
 436         if (hdr->flags & HFCC) {
 437                 if ((cp = strrchr(str, '\n'))) {
 438                         *cp = '\0';
 439                 }
 440                 for (cp = pp = str; (cp = strchr(pp, ',')); pp = cp) {
 441                         *cp++ = '\0';
 442                         insert_fcc(hdr->value, pp);
 443                 }
 444                 insert_fcc(hdr->value, pp);
 445                 return;
 446         }
 447
 448         if (*str != '\n' && *str != '\0') {
 449                 if (hdr->flags & HBCC) {
 450                         struct mailname *mp = NULL;
 451
 452                         /* Create list of Bcc adds. */
 453                         while ((cp = getname(str))) {
 454                                 mp = getm(cp, NULL, 0, AD_HOST, NULL);
 455                                 mp->m_next = bccs;  /* push */
 456                                 bccs = mp;
 457                         }
 458                 } else if (aliasflg && hdr->flags & HTRY) {
 459                         /*
 460                         ** this header contains address(es) that we have to do
 461                         ** alias expansion on.  Because of the saved state in
 462                         ** getname we have to put all the addresses into a
 463                         ** list. We then let putadr munch on that list,
 464                         ** possibly expanding aliases.
 465                         **/
 466                         register struct mailname *f = 0;
 467                         register struct mailname *mp = 0;
 468
 469                         while ((cp = getname(str))) {
 470                                 mp = getm(cp, NULL, 0, AD_HOST, NULL);
 471                                 if (f == 0) {
 472                                         f = mp;
 473                                         mp->m_next = mp;
 474                                 } else {
 475                                         mp->m_next = f->m_next;
 476                                         f->m_next = mp;
 477                                         f = mp;
 478                                 }
 479                         }
 480                         f = mp->m_next; mp->m_next = 0;
 481                         putadr(name, f);
 482                 } else {
 483                         /*
 484                         ** The author(s) of spost decided that alias
 485                         ** substitution wasn't necessary for the non-HTRY
 486                         ** headers.  Unfortunately, one of those headers
 487                         ** is "From:", and having alias substitution
 488                         ** work on that is extremely useful for someone
 489                         ** with a lot of POP3 email accounts or aliases.
 490                         ** post supports aliasing of "From:"...
 491                         **
 492                         ** Since "From:"-processing is incompletely
 493                         ** implemented in this unsupported and
 494                         ** undocumented spost backend, I'm not
 495                         ** going to take the time to implement my new
 496                         ** draft-From:-based email address masquerading.
 497                         ** If I do ever implement it here, I'd almost
 498                         ** certainly want to implement "From:" line
 499                         ** alias processing as well.
 500                         ** -- Dan Harkless <dan-nmh@dilvish.speed.net>
 501                         */
 502                         fprintf(out, "%s: %s", name, str);
 503                 }
 504         }
 505 }
 506
 507
 508 /*
 509 ** Add yet missing headers.
 510 */
 511 static void
 512 finish_headers(FILE *out)
 513 {
 514         char *cp;
 515         char from[BUFSIZ];  /* my network address */
 516         char signature[BUFSIZ];  /* my signature */
 517         char *resentstr = (msgstate == resent) ? "Resent-" : "";
 518
 519         if (!(msgflags & MDAT)) {
 520                 fprintf(out, "%sDate: %s\n", resentstr, dtimenow(0));
 521         }
 522
 523         strncpy(from, getusername(), sizeof(from));
 524         if ((cp = getfullname()) && *cp) {
 525                 snprintf(signature, sizeof(signature), "%s <%s>", cp, from);
 526         } else {
 527                 snprintf(signature, sizeof(signature), "%s", from);
 528         }
 529         if (!(msgflags & MFRM)) {
 530                 fprintf(out, "%sFrom: %s\n", resentstr, signature);
 531         } else {
 532                 /* In case the From: header contains multiple addresses. */
 533                 fprintf(out, "%sSender: %s\n", resentstr, from);
 534         }
 535         if (!(msgflags & MVIS)) {
 536                 fprintf(out, "%sBcc: Blind Distribution List: ;\n", resentstr);
 537         }
 538         if (badmsg) {
 539                 adios(NULL, "re-format message and try again");
 540         }
 541 }
 542
 543
 544 /*
 545 ** Return index of the requested header in the table, or NOTOK if missing.
 546 */
 547 static int
 548 get_header(char *header, struct headers *table)
 549 {
 550         struct headers *h;
 551
 552         for (h=table; h->value; h++) {
 553                 if (mh_strcasecmp(header, h->value)==0) {
 554                         return (h - table);
 555                 }
 556         }
 557
 558         return NOTOK;
 559 }
 560
 561
 562 /*
 563 ** output the address list for header "name".  The address list
 564 ** is a linked list of mailname structs.  "nl" points to the head
 565 ** of the list.  Alias substitution should be done on nl.
 566 */
 567 static void
 568 putadr(char *name, struct mailname *nl)
 569 {
 570         struct mailname *mp, *mp2;
 571         int linepos;
 572         char *cp;
 573         int namelen;
 574
 575         fprintf(out, "%s: ", name);
 576         namelen = strlen(name) + 2;
 577         linepos = namelen;
 578
 579         for (mp = nl; mp; ) {
 580                 if (linepos > MAX_SM_FIELD) {
 581                         fprintf(out, "\n%s: ", name);
 582                         linepos = namelen;
 583                 }
 584                 if (mp->m_nohost) {
 585                         /* a local name - see if it's an alias */
 586                         cp = akvalue(mp->m_mbox);
 587                         if (cp == mp->m_mbox) {
 588                                 /* wasn't an alias - use what the user typed */
 589                                 linepos = putone(mp->m_text, linepos, namelen);
 590                         } else {
 591                                 /* an alias - expand it */
 592                                 while ((cp = getname(cp))) {
 593                                         if (linepos > MAX_SM_FIELD) {
 594                                                 fprintf(out, "\n%s: ", name);
 595                                                 linepos = namelen;
 596                                         }
 597                                         mp2 = getm(cp, NULL, 0, AD_HOST, NULL);
 598                                         if (akvisible()) {
 599                                                 mp2->m_pers = getcpy(mp->m_mbox);
 600                                                 linepos = putone(adrformat(mp2), linepos, namelen);
 601                                         } else {
 602                                                 linepos = putone(mp2->m_text,
 603                                                                 linepos,
 604                                                                 namelen);
 605                                         }
 606                                         mnfree(mp2);
 607                                 }
 608                         }
 609                 } else {
 610                         /* not a local name - use what the user typed */
 611                         linepos = putone(mp->m_text, linepos, namelen);
 612                 }
 613                 mp2 = mp;
 614                 mp = mp->m_next;
 615                 mnfree(mp2);
 616         }
 617         putc('\n', out);
 618 }
 619
 620 static int
 621 putone(char *adr, int pos, int indent)
 622 {
 623         register int len;
 624         static int linepos;
 625
 626         len = strlen(adr);
 627         if (pos == indent)
 628                 linepos = pos;
 629         else if (linepos+len > OUTPUTLINELEN) {
 630                 fprintf(out, ",\n%*s", indent, "");
 631                 linepos = indent;
 632                 pos += indent + 2;
 633         } else {
 634                 fputs(", ", out);
 635                 linepos += 2;
 636                 pos += 2;
 637         }
 638         fputs(adr, out);
 639
 640         linepos += len;
 641         return (pos+len);
 642 }
 643
 644
 645 /*
 646 ** Insert the normalized value from pp into fccfold[].
 647 */
 648 static void
 649 insert_fcc(char *name, unsigned char *pp)
 650 {
 651         unsigned char *cp;
 652
 653         for (cp = pp; isspace(*cp); cp++)
 654                 continue;
 655         for (pp += strlen(pp) - 1; pp > cp && isspace(*pp); pp--)
 656                 continue;
 657         if (pp >= cp)
 658                 *++pp = '\0';
 659         if (!*cp)
 660                 return;
 661
 662         if (fccind >= FCCS)
 663                 adios(NULL, "too many %ss", name);
 664         fccfold[fccind++] = getcpy(cp);
 665 }
 666
 667
 668 static void
 669 fcc(char *file, char *folder)
 670 {
 671         pid_t child_id;
 672         int i, status;
 673         char fold[BUFSIZ];
 674
 675         if (verbose)
 676                 printf("%sFcc: %s\n", msgstate == resent ? "Resent-" : "",
 677                                 folder);
 678         fflush(stdout);
 679
 680         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 681                 sleep(5);
 682         switch (child_id) {
 683         case NOTOK:
 684                 if (verbose) {
 685                         printf("Sorry man, but we had no more forks.\n");
 686                 } else {
 687                         fprintf(stderr, "Skipped %sFcc %s: unable to fork.\n",
 688                                         msgstate == resent ? "Resent-" : "",
 689                                         folder);
 690                 }
 691                 break;
 692
 693         case OK:
 694                 snprintf(fold, sizeof(fold), "%s%s",
 695                                 *folder == '+' || *folder == '@' ? "" : "+",
 696                                 folder);
 697                 execlp(fileproc, mhbasename(fileproc),
 698                                 "-link", "-file", file, fold, NULL);
 699                 _exit(-1);
 700
 701         default:
 702                 if ((status = pidwait(child_id, OK))) {
 703                         if (verbose) {
 704                                 printf(" errored (0%o)\n", status);
 705                         } else {
 706                                 fprintf(stderr, "  %sFcc %s: errored (0%o)\n",
 707                                                 msgstate == resent ?
 708                                                 "Resent-" : "", folder,
 709                                                 status);
 710                         }
 711                 }
 712         }
 713
 714         fflush(stdout);
 715 }
 716
 717
 718 /* BCC GENERATION */
 719
 720 static void
 721 make_bcc_draft(char *draft)
 722 {
 723         int fd;
 724         FILE *out;
 725
 726 #ifdef HAVE_MKSTEMP
 727         fd = mkstemp(bccfil);
 728         if (fd == -1 || (out = fdopen(fd, "w")) == NULL)
 729                 adios(bccfil, "unable to create");
 730 #else
 731         mktemp(bccfil);
 732         if ((out = fopen(bccfil, "w")) == NULL)
 733                 adios(bccfil, "unable to create");
 734 #endif
 735         chmod(bccfil, 0600);
 736
 737         if (subject) {
 738                 fprintf(out, "Subject: BCC: %s", subject);
 739         } else {
 740                 fprintf(out, "Subject: BCC: message without subject");
 741         }
 742         fprintf(out, "%s: %s\n", attach_hdr, draft);
 743         fprintf(out, "------------\n");
 744         fclose(out);
 745 }