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

   1 /*
   2 ** mhstore.c -- store the contents of MIME messages
   3 **
   4 ** This code is Copyright (c) 2002, by the authors of nmh.  See the
   5 ** COPYRIGHT file in the root directory of the nmh distribution for
   6 ** complete copyright information.
   7 */
   8
   9 #include <h/mh.h>
  10 #include <fcntl.h>
  11 #include <h/signals.h>
  12 #include <errno.h>
  13 #include <setjmp.h>
  14 #include <signal.h>
  15 #include <h/tws.h>
  16 #include <h/mime.h>
  17 #include <h/mhparse.h>
  18 #include <h/utils.h>
  19
  20 static struct swit switches[] = {
  21 #define AUTOSW  0
  22         { "auto", 0 },
  23 #define NAUTOSW  1
  24         { "noauto", 0 },
  25 #define FILESW  2  /* interface from show */
  26         { "file file", 0 },
  27 #define PARTSW  3
  28         { "part number", 0 },
  29 #define TYPESW  4
  30         { "type content", 0 },
  31 #define VERSIONSW  5
  32         { "version", 0 },
  33 #define HELPSW  6
  34         { "help", 0 },
  35 #define DEBUGSW  7
  36         { "debug", -5 },
  37         { NULL, 0 }
  38 };
  39
  40
  41 /* mhparse.c */
  42 extern char *tmp;  /* directory to place temp files */
  43
  44 /* mhmisc.c */
  45 extern int npart;
  46 extern int ntype;
  47 extern char *parts[NPARTS + 1];
  48 extern char *types[NTYPES + 1];
  49 extern int userrs;
  50
  51 int debugsw = 0;
  52
  53 #define quitser pipeser
  54
  55 /* mhparse.c */
  56 CT parse_mime(char *);
  57
  58 /* mhmisc.c */
  59 int part_ok(CT, int);
  60 int type_ok(CT, int);
  61 void set_endian(void);
  62 void flush_errors(void);
  63
  64 /* mhfree.c */
  65 void free_content(CT);
  66 extern CT *cts;  /* The list of top-level contents to display */
  67 void freects_done(int) NORETURN;
  68
  69 /*
  70 ** static prototypes
  71 */
  72 static void pipeser(int);
  73
  74 int autosw = 1;
  75
  76 /*
  77 ** Cache of current directory.  This must be
  78 ** set before these routines are called.
  79 */
  80 char *cwd;
  81
  82 /*
  83 ** The directory in which to store the contents.
  84 */
  85 static char *dir;
  86
  87 /*
  88 ** Type for a compare function for qsort.  This keeps
  89 ** the compiler happy.
  90 */
  91 typedef int (*qsort_comp) (const void *, const void *);
  92
  93
  94 /* mhmisc.c */
  95 int part_ok(CT, int);
  96 int type_ok(CT, int);
  97 int make_intermediates(char *);
  98 void flush_errors(void);
  99
 100 /* mhshowsbr.c */
 101 int show_content_aux(CT, int, char *, char *);
 102
 103 /*
 104 ** static prototypes
 105 */
 106 static void store_single_message(CT);
 107 static int store_switch(CT);
 108 static int store_generic(CT);
 109 static int store_multi(CT);
 110 static int store_partial(CT);
 111 static int store_external(CT);
 112 static int ct_compar(CT *, CT *);
 113 static int store_content(CT, CT);
 114 static int output_content_file(CT, int);
 115 static int output_content_folder(char *, char *);
 116 static int parse_format_string(CT, char *, char *, int, char *);
 117 static int copy_some_headers(FILE *, CT);
 118 static void store_all_messages(CT *);
 119
 120
 121 int
 122 main(int argc, char **argv)
 123 {
 124         int msgnum;
 125         char *cp, *file = NULL, *folder = NULL;
 126         char *maildir, buf[100], **argp;
 127         char **arguments;
 128         struct msgs_array msgs = { 0, 0, NULL };
 129         struct msgs *mp = NULL;
 130         CT ct, *ctp;
 131         FILE *fp;
 132
 133         done=freects_done;
 134
 135 #ifdef LOCALE
 136         setlocale(LC_ALL, "");
 137 #endif
 138         invo_name = mhbasename(argv[0]);
 139
 140         /* read user profile/context */
 141         context_read();
 142
 143         arguments = getarguments(invo_name, argc, argv, 1);
 144         argp = arguments;
 145
 146         /*
 147         ** Parse arguments
 148         */
 149         while ((cp = *argp++)) {
 150                 if (*cp == '-') {
 151                         switch (smatch(++cp, switches)) {
 152                         case AMBIGSW:
 153                                 ambigsw(cp, switches);
 154                                 done(1);
 155                         case UNKWNSW:
 156                                 adios(NULL, "-%s unknown", cp);
 157
 158                         case HELPSW:
 159                                 snprintf(buf, sizeof(buf), "%s [+folder] [msgs] [switches]", invo_name);
 160                                 print_help(buf, switches, 1);
 161                                 done(1);
 162                         case VERSIONSW:
 163                                 print_version(invo_name);
 164                                 done(1);
 165
 166                         case AUTOSW:
 167                                 autosw++;
 168                                 continue;
 169                         case NAUTOSW:
 170                                 autosw = 0;
 171                                 continue;
 172
 173                         case PARTSW:
 174                                 if (!(cp = *argp++) || *cp == '-')
 175                                         adios(NULL, "missing argument to %s",
 176                                                         argp[-2]);
 177                                 if (npart >= NPARTS)
 178                                         adios(NULL, "too many parts (starting with %s), %d max", cp, NPARTS);
 179                                 parts[npart++] = cp;
 180                                 continue;
 181
 182                         case TYPESW:
 183                                 if (!(cp = *argp++) || *cp == '-')
 184                                         adios(NULL, "missing argument to %s",
 185                                                         argp[-2]);
 186                                 if (ntype >= NTYPES)
 187                                         adios(NULL, "too many types (starting with %s), %d max", cp, NTYPES);
 188                                 types[ntype++] = cp;
 189                                 continue;
 190
 191                         case FILESW:
 192                                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 193                                         adios(NULL, "missing argument to %s",
 194                                                         argp[-2]);
 195                                 file = *cp == '-' ? cp : getcpy(expanddir(cp));
 196                                 continue;
 197
 198                         case DEBUGSW:
 199                                 debugsw = 1;
 200                                 continue;
 201                         }
 202                 }
 203                 if (*cp == '+' || *cp == '@') {
 204                         if (folder)
 205                                 adios(NULL, "only one folder at a time!");
 206                         else
 207                                 folder = getcpy(expandfol(cp));
 208                 } else
 209                         app_msgarg(&msgs, cp);
 210         }
 211
 212         /* null terminate the list of acceptable parts/types */
 213         parts[npart] = NULL;
 214         types[ntype] = NULL;
 215
 216         set_endian();
 217
 218         /*
 219         ** Check if we've specified an additional profile
 220         */
 221         if ((cp = getenv("MHSTORE"))) {
 222                 if ((fp = fopen(cp, "r"))) {
 223                         readconfig((struct node **) 0, fp, cp, 0);
 224                         fclose(fp);
 225                 } else {
 226                         admonish("", "unable to read $MHSTORE profile (%s)",
 227                                         cp);
 228                 }
 229         }
 230
 231         /*
 232         ** Read the standard profile setup
 233         */
 234         if ((fp = fopen(cp = etcpath("mhn.defaults"), "r"))) {
 235                 readconfig((struct node **) 0, fp, cp, 0);
 236                 fclose(fp);
 237         }
 238
 239         /*
 240         ** Cache the current directory before we do any chdirs()'s.
 241         */
 242         cwd = getcpy(pwd());
 243
 244         /*
 245         ** Check for storage directory.  If specified,
 246         ** then store temporary files there.  Else we
 247         ** store them in standard nmh directory.
 248         */
 249         if ((cp = context_find(nmhstorage)) && *cp)
 250                 tmp = concat(cp, "/", invo_name, NULL);
 251         else
 252                 tmp = getcpy(toabsdir(invo_name));
 253
 254         if (file && msgs.size)
 255                 adios(NULL, "cannot specify msg and file at same time!");
 256
 257         /*
 258         ** check if message is coming from file
 259         */
 260         if (file) {
 261                 if (!(cts = (CT *) calloc((size_t) 2, sizeof(*cts))))
 262                         adios(NULL, "out of memory");
 263                 ctp = cts;
 264
 265                 if ((ct = parse_mime(file)))
 266                         *ctp++ = ct;
 267         } else {
 268                 /*
 269                 ** message(s) are coming from a folder
 270                 */
 271                 if (!msgs.size)
 272                         app_msgarg(&msgs, seq_cur);
 273                 if (!folder)
 274                         folder = getcurfol();
 275                 maildir = toabsdir(folder);
 276
 277                 if (chdir(maildir) == NOTOK)
 278                         adios(maildir, "unable to change directory to");
 279
 280                 /* read folder and create message structure */
 281                 if (!(mp = folder_read(folder)))
 282                         adios(NULL, "unable to read folder %s", folder);
 283
 284                 /* check for empty folder */
 285                 if (mp->nummsg == 0)
 286                         adios(NULL, "no messages in %s", folder);
 287
 288                 /* parse all the message ranges/sequences and set SELECTED */
 289                 for (msgnum = 0; msgnum < msgs.size; msgnum++)
 290                         if (!m_convert(mp, msgs.msgs[msgnum]))
 291                                 done(1);
 292                 seq_setprev(mp);  /* set the previous-sequence */
 293
 294                 if (!(cts = (CT *) calloc((size_t) (mp->numsel + 1),
 295                                 sizeof(*cts))))
 296                         adios(NULL, "out of memory");
 297                 ctp = cts;
 298
 299                 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 300                         if (is_selected(mp, msgnum)) {
 301                                 char *msgnam;
 302
 303                                 msgnam = m_name(msgnum);
 304                                 if ((ct = parse_mime(msgnam)))
 305                                         *ctp++ = ct;
 306                         }
 307                 }
 308         }
 309
 310         if (!*cts)
 311                 done(1);
 312
 313         userrs = 1;
 314         SIGNAL(SIGQUIT, quitser);
 315         SIGNAL(SIGPIPE, pipeser);
 316
 317         /*
 318         ** Get the associated umask for the relevant contents.
 319         */
 320         for (ctp = cts; *ctp; ctp++) {
 321                 struct stat st;
 322
 323                 ct = *ctp;
 324                 if (type_ok(ct, 1) && !ct->c_umask) {
 325                         if (stat(ct->c_file, &st) != NOTOK)
 326                                 ct->c_umask = ~(st.st_mode & 0777);
 327                         else
 328                                 ct->c_umask = ~m_gmprot();
 329                 }
 330         }
 331
 332         /*
 333         ** Store the message content
 334         */
 335         store_all_messages(cts);
 336
 337         /* Now free all the structures for the content */
 338         for (ctp = cts; *ctp; ctp++)
 339                 free_content(*ctp);
 340
 341         free((char *) cts);
 342         cts = NULL;
 343
 344         /* If reading from a folder, do some updating */
 345         if (mp) {
 346                 context_replace(curfolder, folder); /* update current folder */
 347                 seq_setcur(mp, mp->hghsel);  /* update current message */
 348                 seq_save(mp);  /* synchronize sequences  */
 349                 context_save();  /* save the context file  */
 350         }
 351
 352         done(0);
 353         return 1;
 354 }
 355
 356
 357 static void
 358 pipeser(int i)
 359 {
 360         if (i == SIGQUIT) {
 361                 unlink("core");
 362                 fflush(stdout);
 363                 fprintf(stderr, "\n");
 364                 fflush(stderr);
 365         }
 366
 367         done(1);
 368         /* NOTREACHED */
 369 }
 370
 371
 372 /*
 373 ** Main entry point to store content from a collection of messages.
 374 */
 375 static void
 376 store_all_messages(CT *cts)
 377 {
 378         CT ct, *ctp;
 379         char *cp;
 380
 381         /*
 382         ** Check for the directory in which to
 383         ** store any contents.
 384         */
 385         if ((cp = context_find(nmhstorage)) && *cp)
 386                 dir = getcpy(cp);
 387         else
 388                 dir = getcpy(cwd);
 389
 390         for (ctp = cts; *ctp; ctp++) {
 391                 ct = *ctp;
 392                 store_single_message(ct);
 393         }
 394
 395         flush_errors();
 396 }
 397
 398
 399 /*
 400 ** Entry point to store the content
 401 ** in a (single) message
 402 */
 403
 404 static void
 405 store_single_message(CT ct)
 406 {
 407         if (type_ok(ct, 1)) {
 408                 umask(ct->c_umask);
 409                 store_switch(ct);
 410                 if (ct->c_fp) {
 411                         fclose(ct->c_fp);
 412                         ct->c_fp = NULL;
 413                 }
 414                 if (ct->c_ceclosefnx)
 415                         (*ct->c_ceclosefnx) (ct);
 416         }
 417 }
 418
 419
 420 /*
 421 ** Switching routine to store different content types
 422 */
 423
 424 static int
 425 store_switch(CT ct)
 426 {
 427         switch (ct->c_type) {
 428         case CT_MULTIPART:
 429                 return store_multi(ct);
 430                 break;
 431
 432         case CT_MESSAGE:
 433                 switch (ct->c_subtype) {
 434                 case MESSAGE_PARTIAL:
 435                         return store_partial(ct);
 436                         break;
 437
 438                 case MESSAGE_EXTERNAL:
 439                         return store_external(ct);
 440
 441                 case MESSAGE_RFC822:
 442                 default:
 443                         return store_generic(ct);
 444                         break;
 445                 }
 446                 break;
 447
 448         case CT_APPLICATION:
 449         case CT_TEXT:
 450         case CT_AUDIO:
 451         case CT_IMAGE:
 452         case CT_VIDEO:
 453                 return store_generic(ct);
 454                 break;
 455
 456         default:
 457                 adios(NULL, "unknown content type %d", ct->c_type);
 458                 break;
 459         }
 460
 461         return OK;  /* NOT REACHED */
 462 }
 463
 464
 465 /*
 466 ** Generic routine to store a MIME content.
 467 ** (application, audio, video, image, text, message/rfc922)
 468 */
 469
 470 static int
 471 store_generic(CT ct)
 472 {
 473         char **ap, **ep, *cp;
 474         CI ci = &ct->c_ctinfo;
 475
 476         /*
 477         ** Check if the content specifies a filename in its MIME parameters.
 478         ** Don't bother with this for type "message"
 479         ** (only the "message" subtype "rfc822" will use store_generic).
 480         ** The storeproc may already be defined, if this content
 481         ** is part of a "message/external", for instance.
 482         */
 483         if (autosw && ct->c_type != CT_MESSAGE && !ct->c_storeproc) {
 484                 /*
 485                 ** Check the attribute/value pairs, for the attribute "name".
 486                 ** If found, do a few sanity checks and copy the value into
 487                 ** the storeproc.
 488                 */
 489                 for (ap = ci->ci_attrs, ep = ci->ci_values; *ap; ap++, ep++) {
 490                         if (mh_strcasecmp(*ap, "name")==0 &&
 491                                         *(cp = *ep) != '/' && *cp != '.' &&
 492                                         *cp != '|' && *cp != '!' &&
 493                                         !strchr(cp, '%')) {
 494                                 ct->c_storeproc = getcpy(cp);
 495                                 break;
 496                         }
 497                 }
 498         }
 499
 500         return store_content(ct, NULL);
 501 }
 502
 503
 504 /*
 505 ** Store the content of a multipart message
 506 */
 507
 508 static int
 509 store_multi(CT ct)
 510 {
 511         int result;
 512         struct multipart *m = (struct multipart *) ct->c_ctparams;
 513         struct part *part;
 514
 515         result = NOTOK;
 516         for (part = m->mp_parts; part; part = part->mp_next) {
 517                 CT  p = part->mp_part;
 518
 519                 if (part_ok(p, 1) && type_ok(p, 1)) {
 520                         result = store_switch(p);
 521                         if (result == OK && ct->c_subtype == MULTI_ALTERNATE)
 522                                 break;
 523                 }
 524         }
 525
 526         return result;
 527 }
 528
 529
 530 /*
 531 ** Reassemble and store the contents of a collection
 532 ** of messages of type "message/partial".
 533 */
 534
 535 static int
 536 store_partial(CT ct)
 537 {
 538         int cur, hi, i;
 539         CT p, *ctp, *ctq;
 540         CT *base;
 541         struct partial *pm, *qm;
 542
 543         qm = (struct partial *) ct->c_ctparams;
 544         if (qm->pm_stored)
 545                 return OK;
 546
 547         hi = i = 0;
 548         for (ctp = cts; *ctp; ctp++) {
 549                 p = *ctp;
 550                 if (p->c_type == CT_MESSAGE && p->c_subtype == ct->c_subtype) {
 551                         pm = (struct partial *) p->c_ctparams;
 552                         if (!pm->pm_stored &&
 553                                         strcmp(qm->pm_partid, pm->pm_partid)
 554                                         == 0) {
 555                                 pm->pm_marked = pm->pm_partno;
 556                                 if (pm->pm_maxno)
 557                                         hi = pm->pm_maxno;
 558                                 pm->pm_stored = 1;
 559                                 i++;
 560                         } else
 561                                 pm->pm_marked = 0;
 562                 }
 563         }
 564
 565         if (hi == 0) {
 566                 advise(NULL, "missing (at least) last part of multipart message");
 567                 return NOTOK;
 568         }
 569
 570         if ((base = (CT *) calloc((size_t) (i + 1), sizeof(*base))) == NULL)
 571                 adios(NULL, "out of memory");
 572
 573         ctq = base;
 574         for (ctp = cts; *ctp; ctp++) {
 575                 p = *ctp;
 576                 if (p->c_type == CT_MESSAGE && p->c_subtype == ct->c_subtype) {
 577                         pm = (struct partial *) p->c_ctparams;
 578                         if (pm->pm_marked)
 579                                 *ctq++ = p;
 580                 }
 581         }
 582         *ctq = NULL;
 583
 584         if (i > 1)
 585                 qsort((char *) base, i, sizeof(*base), (qsort_comp) ct_compar);
 586
 587         cur = 1;
 588         for (ctq = base; *ctq; ctq++) {
 589                 p = *ctq;
 590                 pm = (struct partial *) p->c_ctparams;
 591                 if (pm->pm_marked != cur) {
 592                         if (pm->pm_marked == cur - 1) {
 593                                 admonish(NULL, "duplicate part %d of %d part multipart message", pm->pm_marked, hi);
 594                                 continue;
 595                         }
 596
 597 missing_part:
 598                         advise (NULL, "missing %spart %d of %d part multipart message", cur != hi ? "(at least) " : "", cur, hi);
 599                         goto losing;
 600                 } else
 601                         cur++;
 602         }
 603         if (hi != --cur) {
 604                 cur = hi;
 605                 goto missing_part;
 606         }
 607
 608         /*
 609         ** Now cycle through the sorted list of messages of type
 610         ** "message/partial" and save/append them to a file.
 611         */
 612
 613         ctq = base;
 614         ct = *ctq++;
 615         if (store_content(ct, NULL) == NOTOK) {
 616 losing:
 617                 free((char *) base);
 618                 return NOTOK;
 619         }
 620
 621         for (; *ctq; ctq++) {
 622                 p = *ctq;
 623                 if (store_content(p, ct) == NOTOK)
 624                         goto losing;
 625         }
 626
 627         free((char *) base);
 628         return OK;
 629 }
 630
 631
 632 /*
 633 ** Store content from a message of type "message/external".
 634 */
 635
 636 static int
 637 store_external(CT ct)
 638 {
 639         int result = NOTOK;
 640         struct exbody *e = (struct exbody *) ct->c_ctparams;
 641         CT p = e->eb_content;
 642
 643         if (!type_ok(p, 1))
 644                 return OK;
 645
 646         /*
 647         ** Check if the parameters for the external body
 648         ** specified a filename.
 649         */
 650         if (autosw) {
 651                 char *cp;
 652
 653                 if ((cp = e->eb_name) && *cp != '/' && *cp != '.' &&
 654                                 *cp != '|' && *cp != '!' && !strchr(cp, '%')) {
 655                         if (!ct->c_storeproc)
 656                                 ct->c_storeproc = getcpy(cp);
 657                         if (!p->c_storeproc)
 658                                 p->c_storeproc = getcpy(cp);
 659                 }
 660         }
 661
 662         /*
 663         ** Since we will let the Content structure for the
 664         ** external body substitute for the current content,
 665         ** we temporarily change its partno (number inside
 666         ** multipart), so everything looks right.
 667         */
 668         p->c_partno = ct->c_partno;
 669
 670         /* we probably need to check if content is really there */
 671         result = store_switch(p);
 672
 673         p->c_partno = NULL;
 674         return result;
 675 }
 676
 677
 678 /*
 679 ** Compare the numbering from two different
 680 ** message/partials (needed for sorting).
 681 */
 682
 683 static int
 684 ct_compar(CT *a, CT *b)
 685 {
 686         struct partial *am = (struct partial *) ((*a)->c_ctparams);
 687         struct partial *bm = (struct partial *) ((*b)->c_ctparams);
 688
 689         return (am->pm_marked - bm->pm_marked);
 690 }
 691
 692
 693 /*
 694 ** Store contents of a message or message part to
 695 ** a folder, a file, the standard output, or pass
 696 ** the contents to a command.
 697 **
 698 ** If the current content to be saved is a followup part
 699 ** to a collection of messages of type "message/partial",
 700 ** then field "p" is a pointer to the Content structure
 701 ** to the first message/partial in the group.
 702 */
 703
 704 static int
 705 store_content(CT ct, CT p)
 706 {
 707         int appending = 0, msgnum = 0;
 708         int is_partial = 0, first_partial = 0;
 709         int last_partial = 0;
 710         char *cp, buffer[BUFSIZ];
 711
 712         /*
 713         ** Do special processing for messages of
 714         ** type "message/partial".
 715         **
 716         ** We first check if this content is of type
 717         ** "message/partial".  If it is, then we need to check
 718         ** whether it is the first and/or last in the group.
 719         **
 720         ** Then if "p" is a valid pointer, it points to the Content
 721         ** structure of the first partial in the group.  So we copy
 722         ** the file name and/or folder name from that message.  In
 723         ** this case, we also note that we will be appending.
 724         */
 725         if (ct->c_type == CT_MESSAGE && ct->c_subtype == MESSAGE_PARTIAL) {
 726                 struct partial *pm = (struct partial *) ct->c_ctparams;
 727
 728                 /* Yep, it's a message/partial */
 729                 is_partial = 1;
 730
 731                 /* But is it the first and/or last in the collection? */
 732                 if (pm->pm_partno == 1)
 733                         first_partial = 1;
 734                 if (pm->pm_maxno && pm->pm_partno == pm->pm_maxno)
 735                         last_partial = 1;
 736
 737                 /*
 738                 ** If "p" is a valid pointer, then it points to the
 739                 ** Content structure for the first message in the group.
 740                 ** So we just copy the filename or foldername information
 741                 ** from the previous iteration of this function.
 742                 */
 743                 if (p) {
 744                         appending = 1;
 745                         ct->c_storage = getcpy(p->c_storage);
 746
 747                         /* record the folder name */
 748                         if (p->c_folder) {
 749                                 ct->c_folder = getcpy(p->c_folder);
 750                         }
 751                         goto got_filename;
 752                 }
 753         }
 754
 755         /*
 756         ** Get storage formatting string.
 757         **
 758         ** 1) If we have storeproc defined, then use that
 759         ** 2) Else check for a mhstore-store-<type>/<subtype> entry
 760         ** 3) Else check for a mhstore-store-<type> entry
 761         ** 4) Else if content is "message", use "+" (current folder)
 762         ** 5) Else use string "%m%P.%s".
 763         */
 764         if ((cp = ct->c_storeproc) == NULL || *cp == '\0') {
 765                 CI ci = &ct->c_ctinfo;
 766
 767                 snprintf(buffer, sizeof(buffer), "%s-store-%s/%s",
 768                                 invo_name, ci->ci_type, ci->ci_subtype);
 769                 if ((cp = context_find(buffer)) == NULL || *cp == '\0') {
 770                         snprintf(buffer, sizeof(buffer), "%s-store-%s",
 771                                         invo_name, ci->ci_type);
 772                         if ((cp = context_find(buffer)) == NULL ||
 773                                         *cp == '\0') {
 774                                 cp = ct->c_type == CT_MESSAGE ?
 775                                                 "+" : "%m%P.%s";
 776                         }
 777                 }
 778         }
 779
 780         /*
 781         ** Check the beginning of storage formatting string
 782         ** to see if we are saving content to a folder.
 783         */
 784         if (*cp == '+' || *cp == '@') {
 785                 char *tmpfilenam, *folder;
 786
 787                 /* Store content in temporary file for now */
 788                 tmpfilenam = m_mktemp(invo_name, NULL, NULL);
 789                 ct->c_storage = getcpy(tmpfilenam);
 790
 791                 /* Get the folder name */
 792                 if (cp[1])
 793                         folder = getcpy(expandfol(cp));
 794                 else
 795                         folder = getcurfol();
 796
 797                 /* Check if folder exists */
 798                 create_folder(toabsdir(folder), 0, exit);
 799
 800                 /* Record the folder name */
 801                 ct->c_folder = getcpy(folder);
 802
 803                 if (cp[1])
 804                         free(folder);
 805
 806                 goto got_filename;
 807         }
 808
 809         /*
 810         ** Parse and expand the storage formatting string
 811         ** in `cp' into `buffer'.
 812         */
 813         parse_format_string(ct, cp, buffer, sizeof(buffer), dir);
 814
 815         /*
 816         ** If formatting begins with '|' or '!', then pass
 817         ** content to standard input of a command and return.
 818         */
 819         if (buffer[0] == '|' || buffer[0] == '!')
 820                 return show_content_aux(ct, 0, buffer + 1, dir);
 821
 822         /* record the filename */
 823         ct->c_storage = getcpy(buffer);
 824
 825 got_filename:
 826         /* flush the output stream */
 827         fflush(stdout);
 828
 829         /* Now save or append the content to a file */
 830         if (output_content_file(ct, appending) == NOTOK)
 831                 return NOTOK;
 832
 833         /*
 834         ** If necessary, link the file into a folder and remove
 835         ** the temporary file.  If this message is a partial,
 836         ** then only do this if it is the last one in the group.
 837         */
 838         if (ct->c_folder && (!is_partial || last_partial)) {
 839                 msgnum = output_content_folder(ct->c_folder, ct->c_storage);
 840                 unlink(ct->c_storage);
 841                 if (msgnum == NOTOK)
 842                         return NOTOK;
 843         }
 844
 845         /*
 846         ** Now print out the name/number of the message
 847         ** that we are storing.
 848         */
 849         if (is_partial) {
 850                 if (first_partial)
 851                         fprintf(stderr, "reassembling partials ");
 852                 if (last_partial)
 853                         fprintf(stderr, "%s", ct->c_file);
 854                 else
 855                         fprintf(stderr, "%s,", ct->c_file);
 856         } else {
 857                 fprintf(stderr, "storing message %s", ct->c_file);
 858                 if (ct->c_partno)
 859                         fprintf(stderr, " part %s", ct->c_partno);
 860         }
 861
 862         /*
 863         ** Unless we are in the "middle" of group of message/partials,
 864         ** we now print the name of the file, folder, and/or message
 865         ** to which we are storing the content.
 866         */
 867         if (!is_partial || last_partial) {
 868                 if (ct->c_folder) {
 869                         fprintf(stderr, " to folder %s as message %d\n",
 870                                         ct->c_folder, msgnum);
 871                 } else if (strcmp(ct->c_storage, "-")==0) {
 872                         fprintf(stderr, " to stdout\n");
 873                 } else {
 874                         int cwdlen;
 875
 876                         cwdlen = strlen(cwd);
 877                         fprintf(stderr, " as file %s\n",
 878                                         strncmp(ct->c_storage, cwd,
 879                                         cwdlen)!=0 ||
 880                                         ct->c_storage[cwdlen] != '/' ?
 881                                         ct->c_storage :
 882                                         ct->c_storage + cwdlen + 1);
 883                 }
 884         }
 885
 886         return OK;
 887 }
 888
 889
 890 /*
 891 ** Output content to a file
 892 */
 893
 894 static int
 895 output_content_file(CT ct, int appending)
 896 {
 897         int filterstate;
 898         char *file, buffer[BUFSIZ];
 899         long pos, last;
 900         FILE *fp;
 901
 902         /*
 903         ** If the pathname is absolute, make sure
 904         ** all the relevant directories exist.
 905         */
 906         if (strchr(ct->c_storage, '/') && make_intermediates(ct->c_storage)
 907                         == NOTOK)
 908                 return NOTOK;
 909
 910         if (ct->c_encoding != CE_7BIT) {
 911                 int cc, fd;
 912
 913                 if (!ct->c_ceopenfnx) {
 914                         advise(NULL, "don't know how to decode part %s of message %s", ct->c_partno, ct->c_file);
 915                         return NOTOK;
 916                 }
 917
 918                 file = appending || strcmp(ct->c_storage, "-")==0 ?
 919                                 NULL : ct->c_storage;
 920                 if ((fd = (*ct->c_ceopenfnx) (ct, &file)) == NOTOK)
 921                         return NOTOK;
 922                 if (strcmp(file, ct->c_storage)==0) {
 923                         (*ct->c_ceclosefnx) (ct);
 924                         return OK;
 925                 }
 926
 927                 /*
 928                 ** Send to standard output
 929                 */
 930                 if (strcmp(ct->c_storage, "-")==0) {
 931                         int gd;
 932
 933                         if ((gd = dup(fileno(stdout))) == NOTOK) {
 934                                 advise("stdout", "unable to dup");
 935 losing:
 936                                 (*ct->c_ceclosefnx) (ct);
 937                                 return NOTOK;
 938                         }
 939                         if ((fp = fdopen(gd, appending ? "a" : "w")) == NULL) {
 940                                 advise("stdout", "unable to fdopen (%d, \"%s\") from", gd, appending ? "a" : "w");
 941                                 close(gd);
 942                                 goto losing;
 943                         }
 944                 } else {
 945                         /*
 946                         ** Open output file
 947                         */
 948                         if ((fp = fopen(ct->c_storage, appending ? "a" : "w"))
 949                                         == NULL) {
 950                                 advise(ct->c_storage, "unable to fopen for %s",
 951                                                 appending ?
 952                                                 "appending" : "writing");
 953                                 goto losing;
 954                         }
 955                 }
 956
 957                 /*
 958                 ** Filter the header fields of the initial enclosing
 959                 ** message/partial into the file.
 960                 */
 961                 if (ct->c_type == CT_MESSAGE && ct->c_subtype == MESSAGE_PARTIAL) {
 962                         struct partial *pm = (struct partial *) ct->c_ctparams;
 963
 964                         if (pm->pm_partno == 1)
 965                                 copy_some_headers(fp, ct);
 966                 }
 967
 968                 for (;;) {
 969                         switch (cc = read(fd, buffer, sizeof(buffer))) {
 970                         case NOTOK:
 971                                 advise(file, "error reading content from");
 972                                 break;
 973
 974                         case OK:
 975                                 break;
 976
 977                         default:
 978                                 fwrite(buffer, sizeof(*buffer), cc, fp);
 979                                 continue;
 980                         }
 981                         break;
 982                 }
 983
 984                 (*ct->c_ceclosefnx) (ct);
 985
 986                 if (cc != NOTOK && fflush(fp))
 987                         advise(ct->c_storage, "error writing to");
 988
 989                 fclose(fp);
 990
 991                 return (cc != NOTOK ? OK : NOTOK);
 992         }
 993
 994         if (!ct->c_fp && (ct->c_fp = fopen(ct->c_file, "r")) == NULL) {
 995                 advise(ct->c_file, "unable to open for reading");
 996                 return NOTOK;
 997         }
 998
 999         pos = ct->c_begin;
1000         last = ct->c_end;
1001         fseek(ct->c_fp, pos, SEEK_SET);
1002
1003         if (strcmp(ct->c_storage, "-")==0) {
1004                 int gd;
1005
1006                 if ((gd = dup(fileno(stdout))) == NOTOK) {
1007                         advise("stdout", "unable to dup");
1008                         return NOTOK;
1009                 }
1010                 if ((fp = fdopen(gd, appending ? "a" : "w")) == NULL) {
1011                         advise("stdout", "unable to fdopen (%d, \"%s\") from",
1012                                         gd, appending ? "a" : "w");
1013                         close(gd);
1014                         return NOTOK;
1015                 }
1016         } else {
1017                 if ((fp = fopen(ct->c_storage, appending ? "a" : "w"))
1018                                 == NULL) {
1019                         advise(ct->c_storage, "unable to fopen for %s",
1020                                         appending ? "appending" : "writing");
1021                         return NOTOK;
1022                 }
1023         }
1024
1025         /*
1026         ** Copy a few of the header fields of the initial
1027         ** enclosing message/partial into the file.
1028         */
1029         filterstate = 0;
1030         if (ct->c_type == CT_MESSAGE && ct->c_subtype == MESSAGE_PARTIAL) {
1031                 struct partial *pm = (struct partial *) ct->c_ctparams;
1032
1033                 if (pm->pm_partno == 1) {
1034                         copy_some_headers(fp, ct);
1035                         filterstate = 1;
1036                 }
1037         }
1038
1039         while (fgets(buffer, sizeof(buffer) - 1, ct->c_fp)) {
1040                 if ((pos += strlen(buffer)) > last) {
1041                         int diff;
1042
1043                         diff = strlen(buffer) - (pos - last);
1044                         if (diff >= 0)
1045                                 buffer[diff] = '\0';
1046                 }
1047                 /*
1048                 ** If this is the first content of a group of
1049                 ** message/partial contents, then we only copy a few
1050                 ** of the header fields of the enclosed message.
1051                 */
1052                 if (filterstate) {
1053                         switch (buffer[0]) {
1054                         case ' ':
1055                         case '\t':
1056                                 if (filterstate < 0)
1057                                         buffer[0] = 0;
1058                                 break;
1059
1060                         case '\n':
1061                                 filterstate = 0;
1062                                 break;
1063
1064                         default:
1065                                 if (!uprf(buffer, XXX_FIELD_PRF) && !uprf(buffer, VRSN_FIELD) && !uprf(buffer, "Subject:") && !uprf(buffer, "Message-ID:")) {
1066                                         filterstate = -1;
1067                                         buffer[0] = 0;
1068                                         break;
1069                                 }
1070                                 filterstate = 1;
1071                                 break;
1072                         }
1073                 }
1074                 fputs(buffer, fp);
1075                 if (pos >= last)
1076                         break;
1077         }
1078
1079         if (fflush(fp))
1080                 advise(ct->c_storage, "error writing to");
1081
1082         fclose(fp);
1083         fclose(ct->c_fp);
1084         ct->c_fp = NULL;
1085         return OK;
1086 }
1087
1088
1089 /*
1090 ** Add a file to a folder.
1091 **
1092 ** Return the new message number of the file
1093 ** when added to the folder.  Return -1, if
1094 ** there is an error.
1095 */
1096
1097 static int
1098 output_content_folder(char *folder, char *filename)
1099 {
1100         int msgnum;
1101         struct msgs *mp;
1102
1103         /* Read the folder. */
1104         if ((mp = folder_read(folder))) {
1105                 /* Link file into folder */
1106                 msgnum = folder_addmsg(&mp, filename, 0, 0, 0, 0, NULL);
1107         } else {
1108                 advise(NULL, "unable to read folder %s", folder);
1109                 return NOTOK;
1110         }
1111
1112         /* free folder structure */
1113         folder_free(mp);
1114
1115         /*
1116         ** Return msgnum.  We are relying on the fact that
1117         ** msgnum will be -1, if folder_addmsg() had an error.
1118         */
1119         return msgnum;
1120 }
1121
1122
1123 /*
1124 ** Parse and expand the storage formatting string
1125 ** pointed to by "cp" into "buffer".
1126 */
1127
1128 static int
1129 parse_format_string(CT ct, char *cp, char *buffer, int buflen, char *dir)
1130 {
1131         int len;
1132         char *bp;
1133         CI ci = &ct->c_ctinfo;
1134
1135         /*
1136         ** If storage string is "-", just copy it, and
1137         ** return (send content to standard output).
1138         */
1139         if (cp[0] == '-' && cp[1] == '\0') {
1140                 strncpy(buffer, cp, buflen);
1141                 return 0;
1142         }
1143
1144         bp = buffer;
1145         bp[0] = '\0';
1146
1147         /*
1148         ** If formatting string is a pathname that doesn't
1149         ** begin with '/', then preface the path with the
1150         ** appropriate directory.
1151         */
1152         if (*cp != '/' && *cp != '|' && *cp != '!') {
1153                 snprintf(bp, buflen, "%s/", dir[1] ? dir : "");
1154                 len = strlen(bp);
1155                 bp += len;
1156                 buflen -= len;
1157         }
1158
1159         for (; *cp; cp++) {
1160
1161                 /* We are processing a storage escape */
1162                 if (*cp == '%') {
1163                         switch (*++cp) {
1164                         case 'a':
1165                                 /*
1166                                 ** Insert parameters from Content-Type.
1167                                 ** This is only valid for '|' commands.
1168                                 */
1169                                 if (buffer[0] != '|' && buffer[0] != '!') {
1170                                         *bp++ = *--cp;
1171                                         *bp = '\0';
1172                                         buflen--;
1173                                         continue;
1174                                 } else {
1175                                         char **ap, **ep;
1176                                         char *s = "";
1177
1178                                         for (ap=ci->ci_attrs, ep=ci->ci_values;
1179                                                          *ap; ap++, ep++) {
1180                                                 snprintf(bp, buflen,
1181                                                                 "%s%s=\"%s\"",
1182                                                                 s, *ap, *ep);
1183                                                 len = strlen(bp);
1184                                                 bp += len;
1185                                                 buflen -= len;
1186                                                 s = " ";
1187                                         }
1188                                 }
1189                                 break;
1190
1191                         case 'm':
1192                                 /* insert message number */
1193                                 snprintf(bp, buflen, "%s",
1194                                                 mhbasename(ct->c_file));
1195                                 break;
1196
1197                         case 'P':
1198                                 /* insert part number with leading dot */
1199                                 if (ct->c_partno)
1200                                         snprintf(bp, buflen, ".%s",
1201                                                         ct->c_partno);
1202                                 break;
1203
1204                         case 'p':
1205                                 /* insert part number withouth leading dot */
1206                                 if (ct->c_partno)
1207                                         strncpy(bp, ct->c_partno, buflen);
1208                                 break;
1209
1210                         case 't':
1211                                 /* insert content type */
1212                                 strncpy(bp, ci->ci_type, buflen);
1213                                 break;
1214
1215                         case 's':
1216                                 /* insert content subtype */
1217                                 strncpy(bp, ci->ci_subtype, buflen);
1218                                 break;
1219
1220                         case '%':
1221                                 /* insert the character % */
1222                                 goto raw;
1223
1224                         default:
1225                                 *bp++ = *--cp;
1226                                 *bp = '\0';
1227                                 buflen--;
1228                                 continue;
1229                         }
1230
1231                         /* Advance bp and decrement buflen */
1232                         len = strlen(bp);
1233                         bp += len;
1234                         buflen -= len;
1235
1236                 } else {
1237 raw:
1238                         *bp++ = *cp;
1239                         *bp = '\0';
1240                         buflen--;
1241                 }
1242         }
1243
1244         return 0;
1245 }
1246
1247
1248 /*
1249 ** Copy some of the header fields of the initial message/partial
1250 ** message into the header of the reassembled message.
1251 */
1252
1253 static int
1254 copy_some_headers(FILE *out, CT ct)
1255 {
1256         HF hp;
1257
1258         hp = ct->c_first_hf;  /* start at first header field */
1259
1260         while (hp) {
1261                 /*
1262                 ** A few of the header fields of the enclosing
1263                 ** messages are not copied.
1264                 */
1265                 if (!uprf(hp->name, XXX_FIELD_PRF) &&
1266                                 mh_strcasecmp(hp->name, VRSN_FIELD) &&
1267                                 mh_strcasecmp(hp->name, "Subject") &&
1268                                 mh_strcasecmp(hp->name, "Message-ID"))
1269                         fprintf(out, "%s:%s", hp->name, hp->value);
1270                 hp = hp->next;  /* next header field */
1271         }
1272
1273         return OK;
1274 }