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                 if (!(cts = (CT *) calloc((size_t) 2, sizeof(*cts))))
 265                         adios(EX_OSERR, NULL, "out of memory");
 266                 ctp = cts;
 267
 268                 if ((ct = parse_mime(file)))
 269                         *ctp++ = ct;
 270         } else {
 271                 /*
 272                 ** message(s) are coming from a folder
 273                 */
 274                 if (!msgs.size)
 275                         app_msgarg(&msgs, seq_cur);
 276                 if (!folder)
 277                         folder = getcurfol();
 278                 maildir = toabsdir(folder);
 279
 280                 if (chdir(maildir) == NOTOK)
 281                         adios(EX_OSERR, maildir, "unable to change directory to");
 282
 283                 /* read folder and create message structure */
 284                 if (!(mp = folder_read(folder)))
 285                         adios(EX_IOERR, NULL, "unable to read folder %s", folder);
 286
 287                 /* check for empty folder */
 288                 if (mp->nummsg == 0)
 289                         adios(EX_DATAERR, NULL, "no messages in %s", folder);
 290
 291                 /* parse all the message ranges/sequences and set SELECTED */
 292                 for (msgnum = 0; msgnum < msgs.size; msgnum++)
 293                         if (!m_convert(mp, msgs.msgs[msgnum]))
 294                                 exit(EX_USAGE);
 295                 seq_setprev(mp);  /* set the previous-sequence */
 296
 297                 if (!(cts = (CT *) calloc((size_t) (mp->numsel + 1),
 298                                 sizeof(*cts))))
 299                         adios(EX_OSERR, NULL, "out of memory");
 300                 ctp = cts;
 301
 302                 for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 303                         if (is_selected(mp, msgnum)) {
 304                                 char *msgnam;
 305
 306                                 msgnam = m_name(msgnum);
 307                                 if ((ct = parse_mime(msgnam)))
 308                                         *ctp++ = ct;
 309                         }
 310                 }
 311         }
 312
 313         if (!*cts)
 314                 exit(EX_SOFTWARE);
 315
 316         userrs = 1;
 317         SIGNAL(SIGQUIT, quitser);
 318         SIGNAL(SIGPIPE, pipeser);
 319
 320         /*
 321         ** Get the associated umask for the relevant contents.
 322         */
 323         for (ctp = cts; *ctp; ctp++) {
 324                 struct stat st;
 325
 326                 ct = *ctp;
 327                 if (type_ok(ct, 1) && !ct->c_umask) {
 328                         if (stat(ct->c_file, &st) != NOTOK)
 329                                 ct->c_umask = ~(st.st_mode & 0777);
 330                         else
 331                                 ct->c_umask = ~m_gmprot();
 332                 }
 333         }
 334
 335         /*
 336         ** Store the message content
 337         */
 338         store_all_messages(cts);
 339
 340         /* Now free all the structures for the content */
 341         for (ctp = cts; *ctp; ctp++)
 342                 free_content(*ctp);
 343
 344         free((char *) cts);
 345         cts = NULL;
 346
 347         /* If reading from a folder, do some updating */
 348         if (mp) {
 349                 context_replace(curfolder, folder); /* update current folder */
 350                 seq_setcur(mp, mp->hghsel);  /* update current message */
 351                 seq_save(mp);  /* synchronize sequences  */
 352                 context_save();  /* save the context file  */
 353         }
 354
 355         return 0;
 356 }
 357
 358
 359 static void
 360 pipeser(int i)
 361 {
 362         if (i == SIGQUIT) {
 363                 unlink("core");
 364                 fflush(stdout);
 365                 fprintf(stderr, "\n");
 366                 fflush(stderr);
 367                 exit(EX_TEMPFAIL);
 368         }
 369
 370         exit(EX_IOERR);
 371         /* NOTREACHED */
 372 }
 373
 374
 375 /*
 376 ** Main entry point to store content from a collection of messages.
 377 */
 378 static void
 379 store_all_messages(CT *cts)
 380 {
 381         CT ct, *ctp;
 382         char *cp;
 383
 384         /*
 385         ** Check for the directory in which to
 386         ** store any contents.
 387         */
 388         if ((cp = context_find(nmhstorage)) && *cp)
 389                 dir = getcpy(cp);
 390         else
 391                 dir = getcpy(cwd);
 392
 393         for (ctp = cts; *ctp; ctp++) {
 394                 ct = *ctp;
 395                 store_single_message(ct);
 396         }
 397
 398         flush_errors();
 399 }
 400
 401
 402 /*
 403 ** Entry point to store the content
 404 ** in a (single) message
 405 */
 406
 407 static void
 408 store_single_message(CT ct)
 409 {
 410         if (type_ok(ct, 1)) {
 411                 umask(ct->c_umask);
 412                 store_switch(ct);
 413                 if (ct->c_fp) {
 414                         fclose(ct->c_fp);
 415                         ct->c_fp = NULL;
 416                 }
 417                 if (ct->c_ceclosefnx)
 418                         (*ct->c_ceclosefnx) (ct);
 419         }
 420 }
 421
 422
 423 /*
 424 ** Switching routine to store different content types
 425 */
 426
 427 static int
 428 store_switch(CT ct)
 429 {
 430         switch (ct->c_type) {
 431         case CT_MULTIPART:
 432                 return store_multi(ct);
 433                 break;
 434
 435         case CT_MESSAGE:
 436                 switch (ct->c_subtype) {
 437                 case MESSAGE_PARTIAL:
 438                         return store_partial(ct);
 439                         break;
 440
 441                 case MESSAGE_EXTERNAL:
 442                         return store_external(ct);
 443
 444                 case MESSAGE_RFC822:
 445                 default:
 446                         return store_generic(ct);
 447                         break;
 448                 }
 449                 break;
 450
 451         case CT_APPLICATION:
 452         case CT_TEXT:
 453         case CT_AUDIO:
 454         case CT_IMAGE:
 455         case CT_VIDEO:
 456                 return store_generic(ct);
 457                 break;
 458
 459         default:
 460                 adios(EX_DATAERR, NULL, "unknown content type %d", ct->c_type);
 461                 break;
 462         }
 463
 464         return OK;  /* NOT REACHED */
 465 }
 466
 467
 468 /*
 469 ** Generic routine to store a MIME content.
 470 ** (application, audio, video, image, text, message/rfc922)
 471 */
 472 static int
 473 store_generic(CT ct)
 474 {
 475         char **ap, **vp, *cp;
 476         CI ci = &ct->c_ctinfo;
 477
 478         /*
 479         ** Check if the content specifies a filename in its MIME parameters.
 480         ** Don't bother with this for type "message"
 481         ** (only the "message" subtype "rfc822" will use store_generic).
 482         */
 483         if (autosw && ct->c_type != CT_MESSAGE) {
 484                 /*
 485                 ** Check the attribute/value pairs, for the attribute "name".
 486                 ** If found, take the basename, do a few sanity checks and
 487                 ** copy the value into c_storeproc.
 488                 */
 489                 for (ap = ci->ci_attrs, vp = ci->ci_values; *ap; ap++,vp++) {
 490                         if (mh_strcasecmp(*ap, "name")!=0) {
 491                                 continue;
 492                         }
 493                         cp = mhbasename(*vp);
 494                         if (*cp && *cp!='.' && *cp!='|' && *cp!='!' &&
 495                                         !strchr(cp, '%')) {
 496                                 /* filename looks good: use it */
 497                                 ct->c_storeproc = getcpy(cp);
 498                         }
 499                         break;
 500                 }
 501         }
 502
 503         return store_content(ct, NULL);
 504 }
 505
 506
 507 /*
 508 ** Store the content of a multipart message
 509 */
 510
 511 static int
 512 store_multi(CT ct)
 513 {
 514         int result;
 515         struct multipart *m = (struct multipart *) ct->c_ctparams;
 516         struct part *part;
 517
 518         result = NOTOK;
 519         for (part = m->mp_parts; part; part = part->mp_next) {
 520                 CT  p = part->mp_part;
 521
 522                 if (part_ok(p, 1) && type_ok(p, 1)) {
 523                         result = store_switch(p);
 524                         if (result == OK && ct->c_subtype == MULTI_ALTERNATE)
 525                                 break;
 526                 }
 527         }
 528
 529         return result;
 530 }
 531
 532
 533 /*
 534 ** Reassemble and store the contents of a collection
 535 ** of messages of type "message/partial".
 536 */
 537
 538 static int
 539 store_partial(CT ct)
 540 {
 541         int cur, hi, i;
 542         CT p, *ctp, *ctq;
 543         CT *base;
 544         struct partial *pm, *qm;
 545
 546         qm = (struct partial *) ct->c_ctparams;
 547         if (qm->pm_stored)
 548                 return OK;
 549
 550         hi = i = 0;
 551         for (ctp = cts; *ctp; ctp++) {
 552                 p = *ctp;
 553                 if (p->c_type == CT_MESSAGE && p->c_subtype == ct->c_subtype) {
 554                         pm = (struct partial *) p->c_ctparams;
 555                         if (!pm->pm_stored &&
 556                                         strcmp(qm->pm_partid, pm->pm_partid)
 557                                         == 0) {
 558                                 pm->pm_marked = pm->pm_partno;
 559                                 if (pm->pm_maxno)
 560                                         hi = pm->pm_maxno;
 561                                 pm->pm_stored = 1;
 562                                 i++;
 563                         } else
 564                                 pm->pm_marked = 0;
 565                 }
 566         }
 567
 568         if (hi == 0) {
 569                 advise(NULL, "missing (at least) last part of multipart message");
 570                 return NOTOK;
 571         }
 572
 573         if ((base = (CT *) calloc((size_t) (i + 1), sizeof(*base))) == NULL)
 574                 adios(EX_OSERR, NULL, "out of memory");
 575
 576         ctq = base;
 577         for (ctp = cts; *ctp; ctp++) {
 578                 p = *ctp;
 579                 if (p->c_type == CT_MESSAGE && p->c_subtype == ct->c_subtype) {
 580                         pm = (struct partial *) p->c_ctparams;
 581                         if (pm->pm_marked)
 582                                 *ctq++ = p;
 583                 }
 584         }
 585         *ctq = NULL;
 586
 587         if (i > 1)
 588                 qsort((char *) base, i, sizeof(*base), (qsort_comp) ct_compar);
 589
 590         cur = 1;
 591         for (ctq = base; *ctq; ctq++) {
 592                 p = *ctq;
 593                 pm = (struct partial *) p->c_ctparams;
 594                 if (pm->pm_marked != cur) {
 595                         if (pm->pm_marked == cur - 1) {
 596                                 admonish(NULL, "duplicate part %d of %d part multipart message", pm->pm_marked, hi);
 597                                 continue;
 598                         }
 599
 600 missing_part:
 601                         advise (NULL, "missing %spart %d of %d part multipart message", cur != hi ? "(at least) " : "", cur, hi);
 602                         goto losing;
 603                 } else
 604                         cur++;
 605         }
 606         if (hi != --cur) {
 607                 cur = hi;
 608                 goto missing_part;
 609         }
 610
 611         /*
 612         ** Now cycle through the sorted list of messages of type
 613         ** "message/partial" and save/append them to a file.
 614         */
 615
 616         ctq = base;
 617         ct = *ctq++;
 618         if (store_content(ct, NULL) == NOTOK) {
 619 losing:
 620                 free((char *) base);
 621                 return NOTOK;
 622         }
 623
 624         for (; *ctq; ctq++) {
 625                 p = *ctq;
 626                 if (store_content(p, ct) == NOTOK)
 627                         goto losing;
 628         }
 629
 630         free((char *) base);
 631         return OK;
 632 }
 633
 634
 635 /*
 636 ** Show how to retrieve content of type "message/external".
 637 */
 638 static int
 639 store_external(CT ct)
 640 {
 641         char **ap, **ep;
 642         char *msg;
 643         FILE *fp;
 644         char buf[BUFSIZ];
 645
 646         msg = add("You need to fetch the contents yourself:", NULL);
 647         ap = ct->c_ctinfo.ci_attrs;
 648         ep = ct->c_ctinfo.ci_values;
 649         for (; *ap; ap++, ep++) {
 650                 msg = add(concat("\n\t", *ap, ": ", *ep, NULL), msg);
 651         }
 652         if (!(fp = fopen(ct->c_file, "r"))) {
 653                 adios(EX_IOERR, ct->c_file, "unable to open");
 654         }
 655         fseek(fp, ct->c_begin, SEEK_SET);
 656         while (!feof(fp) && ftell(fp) < ct->c_end) {
 657                 if (!fgets(buf, sizeof buf, fp)) {
 658                         adios(EX_IOERR, ct->c_file, "unable to read");
 659                 }
 660                 *strchr(buf, '\n') = '\0';
 661                 msg = add(concat("\n\t", buf, NULL), msg);
 662         }
 663         fclose(fp);
 664         advise(NULL, msg);
 665         return OK;
 666 }
 667
 668
 669 /*
 670 ** Compare the numbering from two different
 671 ** message/partials (needed for sorting).
 672 */
 673
 674 static int
 675 ct_compar(CT *a, CT *b)
 676 {
 677         struct partial *am = (struct partial *) ((*a)->c_ctparams);
 678         struct partial *bm = (struct partial *) ((*b)->c_ctparams);
 679
 680         return (am->pm_marked - bm->pm_marked);
 681 }
 682
 683
 684 /*
 685 ** Store contents of a message or message part to
 686 ** a folder, a file, the standard output, or pass
 687 ** the contents to a command.
 688 **
 689 ** If the current content to be saved is a followup part
 690 ** to a collection of messages of type "message/partial",
 691 ** then field "p" is a pointer to the Content structure
 692 ** to the first message/partial in the group.
 693 */
 694
 695 static int
 696 store_content(CT ct, CT p)
 697 {
 698         int appending = 0, msgnum = 0;
 699         int is_partial = 0, first_partial = 0;
 700         int last_partial = 0;
 701         char *cp, buffer[BUFSIZ];
 702
 703         /*
 704         ** Do special processing for messages of
 705         ** type "message/partial".
 706         **
 707         ** We first check if this content is of type
 708         ** "message/partial".  If it is, then we need to check
 709         ** whether it is the first and/or last in the group.
 710         **
 711         ** Then if "p" is a valid pointer, it points to the Content
 712         ** structure of the first partial in the group.  So we copy
 713         ** the file name and/or folder name from that message.  In
 714         ** this case, we also note that we will be appending.
 715         */
 716         if (ct->c_type == CT_MESSAGE && ct->c_subtype == MESSAGE_PARTIAL) {
 717                 struct partial *pm = (struct partial *) ct->c_ctparams;
 718
 719                 /* Yep, it's a message/partial */
 720                 is_partial = 1;
 721
 722                 /* But is it the first and/or last in the collection? */
 723                 if (pm->pm_partno == 1)
 724                         first_partial = 1;
 725                 if (pm->pm_maxno && pm->pm_partno == pm->pm_maxno)
 726                         last_partial = 1;
 727
 728                 /*
 729                 ** If "p" is a valid pointer, then it points to the
 730                 ** Content structure for the first message in the group.
 731                 ** So we just copy the filename or foldername information
 732                 ** from the previous iteration of this function.
 733                 */
 734                 if (p) {
 735                         appending = 1;
 736                         ct->c_storage = getcpy(p->c_storage);
 737
 738                         /* record the folder name */
 739                         if (p->c_folder) {
 740                                 ct->c_folder = getcpy(p->c_folder);
 741                         }
 742                         goto got_filename;
 743                 }
 744         }
 745
 746         /*
 747         ** Get storage formatting string.
 748         **
 749         ** 1) If we have storeproc defined, then use that
 750         ** 2) Else check for a mhstore-store-<type>/<subtype> entry
 751         ** 3) Else check for a mhstore-store-<type> entry
 752         ** 4) Else if content is "message", use "+" (current folder)
 753         ** 5) Else use string "%m%P.%s".
 754         */
 755         if (!(cp = ct->c_storeproc) || !*cp) {
 756                 CI ci = &ct->c_ctinfo;
 757
 758                 snprintf(buffer, sizeof(buffer), "%s-store-%s/%s",
 759                                 invo_name, ci->ci_type, ci->ci_subtype);
 760                 if ((cp = context_find(buffer)) == NULL || *cp == '\0') {
 761                         snprintf(buffer, sizeof(buffer), "%s-store-%s",
 762                                         invo_name, ci->ci_type);
 763                         if ((cp = context_find(buffer)) == NULL ||
 764                                         *cp == '\0') {
 765                                 cp = ct->c_type == CT_MESSAGE ?
 766                                                 "+" : "%m%P.%s";
 767                         }
 768                 }
 769         }
 770
 771         /*
 772         ** Check the beginning of storage formatting string
 773         ** to see if we are saving content to a folder.
 774         */
 775         if (*cp == '+' || *cp == '@') {
 776                 char *tmpfilenam, *folder;
 777
 778                 /* Store content in temporary file for now */
 779                 tmpfilenam = m_mktemp(invo_name, NULL, NULL);
 780                 ct->c_storage = getcpy(tmpfilenam);
 781
 782                 /* Get the folder name */
 783                 if (cp[1])
 784                         folder = getcpy(expandfol(cp));
 785                 else
 786                         folder = getcurfol();
 787
 788                 /* Check if folder exists */
 789                 create_folder(toabsdir(folder), 0, exit);
 790
 791                 /* Record the folder name */
 792                 ct->c_folder = getcpy(folder);
 793
 794                 if (cp[1])
 795                         free(folder);
 796
 797                 goto got_filename;
 798         }
 799
 800         /*
 801         ** Parse and expand the storage formatting string
 802         ** in `cp' into `buffer'.
 803         */
 804         parse_format_string(ct, cp, buffer, sizeof(buffer), dir);
 805
 806         /*
 807         ** If formatting begins with '|' or '!', then pass
 808         ** content to standard input of a command and return.
 809         */
 810         if (buffer[0] == '|' || buffer[0] == '!')
 811                 return show_content_aux(ct, 0, buffer + 1, dir);
 812
 813         /* record the filename */
 814         ct->c_storage = getcpy(buffer);
 815
 816 got_filename:
 817         /* flush the output stream */
 818         fflush(stdout);
 819
 820         /* Now save or append the content to a file */
 821         if (output_content_file(ct, appending) == NOTOK)
 822                 return NOTOK;
 823
 824         /*
 825         ** If necessary, link the file into a folder and remove
 826         ** the temporary file.  If this message is a partial,
 827         ** then only do this if it is the last one in the group.
 828         */
 829         if (ct->c_folder && (!is_partial || last_partial)) {
 830                 msgnum = output_content_folder(ct->c_folder, ct->c_storage);
 831                 unlink(ct->c_storage);
 832                 if (msgnum == NOTOK)
 833                         return NOTOK;
 834         }
 835
 836         /*
 837         ** Now print out the name/number of the message
 838         ** that we are storing.
 839         */
 840         if (is_partial) {
 841                 if (first_partial)
 842                         fprintf(stderr, "reassembling partials ");
 843                 if (last_partial)
 844                         fprintf(stderr, "%s", ct->c_file);
 845                 else
 846                         fprintf(stderr, "%s,", ct->c_file);
 847         } else {
 848                 fprintf(stderr, "storing message %s", ct->c_file);
 849                 if (ct->c_partno)
 850                         fprintf(stderr, " part %s", ct->c_partno);
 851         }
 852
 853         /*
 854         ** Unless we are in the "middle" of group of message/partials,
 855         ** we now print the name of the file, folder, and/or message
 856         ** to which we are storing the content.
 857         */
 858         if (!is_partial || last_partial) {
 859                 if (ct->c_folder) {
 860                         fprintf(stderr, " to folder %s as message %d\n",
 861                                         ct->c_folder, msgnum);
 862                 } else if (strcmp(ct->c_storage, "-")==0) {
 863                         fprintf(stderr, " to stdout\n");
 864                 } else {
 865                         int cwdlen;
 866
 867                         cwdlen = strlen(cwd);
 868                         fprintf(stderr, " as file %s\n",
 869                                         strncmp(ct->c_storage, cwd,
 870                                         cwdlen)!=0 ||
 871                                         ct->c_storage[cwdlen] != '/' ?
 872                                         ct->c_storage :
 873                                         ct->c_storage + cwdlen + 1);
 874                 }
 875         }
 876
 877         return OK;
 878 }
 879
 880
 881 /*
 882 ** Output content to a file
 883 */
 884
 885 static int
 886 output_content_file(CT ct, int appending)
 887 {
 888         int filterstate;
 889         char *file, buffer[BUFSIZ];
 890         long pos, last;
 891         FILE *fp;
 892
 893         /*
 894         ** If the pathname contains directories, make sure
 895         ** all of them exist.
 896         */
 897         if (strchr(ct->c_storage, '/') && make_intermediates(ct->c_storage)
 898                         == NOTOK)
 899                 return NOTOK;
 900
 901         if (ct->c_encoding != CE_7BIT) {
 902                 int cc, fd;
 903
 904                 if (!ct->c_ceopenfnx) {
 905                         advise(NULL, "don't know how to decode part %s of message %s", ct->c_partno, ct->c_file);
 906                         return NOTOK;
 907                 }
 908
 909                 file = appending || strcmp(ct->c_storage, "-")==0 ?
 910                                 NULL : ct->c_storage;
 911                 if ((fd = (*ct->c_ceopenfnx) (ct, &file)) == NOTOK)
 912                         return NOTOK;
 913                 if (strcmp(file, ct->c_storage)==0) {
 914                         (*ct->c_ceclosefnx) (ct);
 915                         return OK;
 916                 }
 917
 918                 /*
 919                 ** Send to standard output
 920                 */
 921                 if (strcmp(ct->c_storage, "-")==0) {
 922                         int gd;
 923
 924                         if ((gd = dup(fileno(stdout))) == NOTOK) {
 925                                 advise("stdout", "unable to dup");
 926 losing:
 927                                 (*ct->c_ceclosefnx) (ct);
 928                                 return NOTOK;
 929                         }
 930                         if ((fp = fdopen(gd, appending ? "a" : "w")) == NULL) {
 931                                 advise("stdout", "unable to fdopen (%d, \"%s\") from", gd, appending ? "a" : "w");
 932                                 close(gd);
 933                                 goto losing;
 934                         }
 935                 } else {
 936                         /*
 937                         ** Open output file
 938                         */
 939                         if ((fp = fopen(ct->c_storage, appending ? "a" : "w"))
 940                                         == NULL) {
 941                                 advise(ct->c_storage, "unable to fopen for %s",
 942                                                 appending ?
 943                                                 "appending" : "writing");
 944                                 goto losing;
 945                         }
 946                 }
 947
 948                 /*
 949                 ** Filter the header fields of the initial enclosing
 950                 ** message/partial into the file.
 951                 */
 952                 if (ct->c_type == CT_MESSAGE && ct->c_subtype == MESSAGE_PARTIAL) {
 953                         struct partial *pm = (struct partial *) ct->c_ctparams;
 954
 955                         if (pm->pm_partno == 1)
 956                                 copy_some_headers(fp, ct);
 957                 }
 958
 959                 for (;;) {
 960                         switch (cc = read(fd, buffer, sizeof(buffer))) {
 961                         case NOTOK:
 962                                 advise(file, "error reading content from");
 963                                 break;
 964
 965                         case OK:
 966                                 break;
 967
 968                         default:
 969                                 fwrite(buffer, sizeof(*buffer), cc, fp);
 970                                 continue;
 971                         }
 972                         break;
 973                 }
 974
 975                 (*ct->c_ceclosefnx) (ct);
 976
 977                 if (cc != NOTOK && fflush(fp))
 978                         advise(ct->c_storage, "error writing to");
 979
 980                 fclose(fp);
 981
 982                 return (cc != NOTOK ? OK : NOTOK);
 983         }
 984
 985         if (!ct->c_fp && (ct->c_fp = fopen(ct->c_file, "r")) == NULL) {
 986                 advise(ct->c_file, "unable to open for reading");
 987                 return NOTOK;
 988         }
 989
 990         pos = ct->c_begin;
 991         last = ct->c_end;
 992         fseek(ct->c_fp, pos, SEEK_SET);
 993
 994         if (strcmp(ct->c_storage, "-")==0) {
 995                 int gd;
 996
 997                 if ((gd = dup(fileno(stdout))) == NOTOK) {
 998                         advise("stdout", "unable to dup");
 999                         return NOTOK;
1000                 }
1001                 if ((fp = fdopen(gd, appending ? "a" : "w")) == NULL) {
1002                         advise("stdout", "unable to fdopen (%d, \"%s\") from",
1003                                         gd, appending ? "a" : "w");
1004                         close(gd);
1005                         return NOTOK;
1006                 }
1007         } else {
1008                 if ((fp = fopen(ct->c_storage, appending ? "a" : "w"))
1009                                 == NULL) {
1010                         advise(ct->c_storage, "unable to fopen for %s",
1011                                         appending ? "appending" : "writing");
1012                         return NOTOK;
1013                 }
1014         }
1015
1016         /*
1017         ** Copy a few of the header fields of the initial
1018         ** enclosing message/partial into the file.
1019         */
1020         filterstate = 0;
1021         if (ct->c_type == CT_MESSAGE && ct->c_subtype == MESSAGE_PARTIAL) {
1022                 struct partial *pm = (struct partial *) ct->c_ctparams;
1023
1024                 if (pm->pm_partno == 1) {
1025                         copy_some_headers(fp, ct);
1026                         filterstate = 1;
1027                 }
1028         }
1029
1030         while (fgets(buffer, sizeof(buffer) - 1, ct->c_fp)) {
1031                 if ((pos += strlen(buffer)) > last) {
1032                         int diff;
1033
1034                         diff = strlen(buffer) - (pos - last);
1035                         if (diff >= 0)
1036                                 buffer[diff] = '\0';
1037                 }
1038                 /*
1039                 ** If this is the first content of a group of
1040                 ** message/partial contents, then we only copy a few
1041                 ** of the header fields of the enclosed message.
1042                 */
1043                 if (filterstate) {
1044                         switch (buffer[0]) {
1045                         case ' ':
1046                         case '\t':
1047                                 if (filterstate < 0)
1048                                         buffer[0] = 0;
1049                                 break;
1050
1051                         case '\n':
1052                                 filterstate = 0;
1053                                 break;
1054
1055                         default:
1056                                 if (!uprf(buffer, XXX_FIELD_PRF) && !uprf(buffer, VRSN_FIELD) && !uprf(buffer, "Subject:") && !uprf(buffer, "Message-ID:")) {
1057                                         filterstate = -1;
1058                                         buffer[0] = 0;
1059                                         break;
1060                                 }
1061                                 filterstate = 1;
1062                                 break;
1063                         }
1064                 }
1065                 fputs(buffer, fp);
1066                 if (pos >= last)
1067                         break;
1068         }
1069
1070         if (fflush(fp))
1071                 advise(ct->c_storage, "error writing to");
1072
1073         fclose(fp);
1074         fclose(ct->c_fp);
1075         ct->c_fp = NULL;
1076         return OK;
1077 }
1078
1079
1080 /*
1081 ** Add a file to a folder.
1082 **
1083 ** Return the new message number of the file
1084 ** when added to the folder.  Return -1, if
1085 ** there is an error.
1086 */
1087
1088 static int
1089 output_content_folder(char *folder, char *filename)
1090 {
1091         int msgnum;
1092         struct msgs *mp;
1093
1094         /* Read the folder. */
1095         if ((mp = folder_read(folder))) {
1096                 /* Link file into folder */
1097                 msgnum = folder_addmsg(&mp, filename, 0, 0, 0, 0, NULL);
1098         } else {
1099                 advise(NULL, "unable to read folder %s", folder);
1100                 return NOTOK;
1101         }
1102
1103         /* free folder structure */
1104         folder_free(mp);
1105
1106         /*
1107         ** Return msgnum.  We are relying on the fact that
1108         ** msgnum will be -1, if folder_addmsg() had an error.
1109         */
1110         return msgnum;
1111 }
1112
1113
1114 /*
1115 ** Parse and expand the storage formatting string
1116 ** pointed to by "cp" into "buffer".
1117 */
1118
1119 static int
1120 parse_format_string(CT ct, char *cp, char *buffer, int buflen, char *dir)
1121 {
1122         int len;
1123         char *bp;
1124         CI ci = &ct->c_ctinfo;
1125
1126         /*
1127         ** If storage string is "-", just copy it, and
1128         ** return (send content to standard output).
1129         */
1130         if (cp[0] == '-' && cp[1] == '\0') {
1131                 strncpy(buffer, cp, buflen);
1132                 return 0;
1133         }
1134
1135         bp = buffer;
1136         bp[0] = '\0';
1137
1138         /*
1139         ** If formatting string is a pathname that doesn't
1140         ** begin with '/', then preface the path with the
1141         ** appropriate directory.
1142         */
1143         if (*cp != '/' && *cp != '|' && *cp != '!') {
1144                 snprintf(bp, buflen, "%s/", dir[1] ? dir : "");
1145                 len = strlen(bp);
1146                 bp += len;
1147                 buflen -= len;
1148         }
1149
1150         for (; *cp; cp++) {
1151
1152                 /* We are processing a storage escape */
1153                 if (*cp == '%') {
1154                         switch (*++cp) {
1155                         case 'a':
1156                                 /*
1157                                 ** Insert parameters from Content-Type.
1158                                 ** This is only valid for '|' commands.
1159                                 */
1160                                 if (buffer[0] != '|' && buffer[0] != '!') {
1161                                         *bp++ = *--cp;
1162                                         *bp = '\0';
1163                                         buflen--;
1164                                         continue;
1165                                 } else {
1166                                         char **ap, **ep;
1167                                         char *s = "";
1168
1169                                         for (ap=ci->ci_attrs, ep=ci->ci_values;
1170                                                          *ap; ap++, ep++) {
1171                                                 snprintf(bp, buflen,
1172                                                                 "%s%s=\"%s\"",
1173                                                                 s, *ap, *ep);
1174                                                 len = strlen(bp);
1175                                                 bp += len;
1176                                                 buflen -= len;
1177                                                 s = " ";
1178                                         }
1179                                 }
1180                                 break;
1181
1182                         case 'm':
1183                                 /* insert message number */
1184                                 snprintf(bp, buflen, "%s",
1185                                                 mhbasename(ct->c_file));
1186                                 break;
1187
1188                         case 'P':
1189                                 /* insert part number with leading dot */
1190                                 if (ct->c_partno)
1191                                         snprintf(bp, buflen, ".%s",
1192                                                         ct->c_partno);
1193                                 break;
1194
1195                         case 'p':
1196                                 /* insert part number withouth leading dot */
1197                                 if (ct->c_partno)
1198                                         strncpy(bp, ct->c_partno, buflen);
1199                                 break;
1200
1201                         case 't':
1202                                 /* insert content type */
1203                                 strncpy(bp, ci->ci_type, buflen);
1204                                 break;
1205
1206                         case 's':
1207                                 /* insert content subtype */
1208                                 strncpy(bp, ci->ci_subtype, buflen);
1209                                 break;
1210
1211                         case '%':
1212                                 /* insert the character % */
1213                                 goto raw;
1214
1215                         default:
1216                                 *bp++ = *--cp;
1217                                 *bp = '\0';
1218                                 buflen--;
1219                                 continue;
1220                         }
1221
1222                         /* Advance bp and decrement buflen */
1223                         len = strlen(bp);
1224                         bp += len;
1225                         buflen -= len;
1226
1227                 } else {
1228 raw:
1229                         *bp++ = *cp;
1230                         *bp = '\0';
1231                         buflen--;
1232                 }
1233         }
1234
1235         return 0;
1236 }
1237
1238
1239 /*
1240 ** Copy some of the header fields of the initial message/partial
1241 ** message into the header of the reassembled message.
1242 */
1243
1244 static int
1245 copy_some_headers(FILE *out, CT ct)
1246 {
1247         HF hp;
1248
1249         hp = ct->c_first_hf;  /* start at first header field */
1250
1251         while (hp) {
1252                 /*
1253                 ** A few of the header fields of the enclosing
1254                 ** messages are not copied.
1255                 */
1256                 if (!uprf(hp->name, XXX_FIELD_PRF) &&
1257                                 mh_strcasecmp(hp->name, VRSN_FIELD) &&
1258                                 mh_strcasecmp(hp->name, "Subject") &&
1259                                 mh_strcasecmp(hp->name, "Message-ID"))
1260                         fprintf(out, "%s:%s", hp->name, hp->value);
1261                 hp = hp->next;  /* next header field */
1262         }
1263
1264         return OK;
1265 }