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