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