diplodocus.org Git - nmh/blob - uip/mhshow.c

   1 /* mhshow.c -- display the contents of MIME messages
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include "h/mh.h"
   9 #include "sbr/m_name.h"
  10 #include "sbr/m_gmprot.h"
  11 #include "sbr/getarguments.h"
  12 #include "sbr/seq_setunseen.h"
  13 #include "sbr/seq_setprev.h"
  14 #include "sbr/seq_setcur.h"
  15 #include "sbr/seq_save.h"
  16 #include "sbr/smatch.h"
  17 #include "sbr/m_convert.h"
  18 #include "sbr/getfolder.h"
  19 #include "sbr/folder_read.h"
  20 #include "sbr/context_save.h"
  21 #include "sbr/context_replace.h"
  22 #include "sbr/context_find.h"
  23 #include "sbr/readconfig.h"
  24 #include "sbr/ambigsw.h"
  25 #include "sbr/path.h"
  26 #include "sbr/print_version.h"
  27 #include "sbr/print_help.h"
  28 #include "sbr/error.h"
  29 #include <fcntl.h>
  30 #include "h/signals.h"
  31 #include "h/md5.h"
  32 #include "h/mts.h"
  33 #include "h/tws.h"
  34 #include "h/fmt_scan.h"
  35 #include "h/mime.h"
  36 #include "h/mhparse.h"
  37 #include "h/mhcachesbr.h"
  38 #include "h/done.h"
  39 #include "h/utils.h"
  40 #include "mhmisc.h"
  41 #include "sbr/m_maildir.h"
  42 #include "sbr/m_popen.h"
  43 #include "mhfree.h"
  44 #include "mhshowsbr.h"
  45
  46 #define MHSHOW_SWITCHES \
  47     X("check", 0, CHECKSW) \
  48     X("nocheck", 0, NCHECKSW) \
  49     X("verbose", 0, VERBSW) \
  50     X("noverbose", 0, NVERBSW) \
  51     X("concat", 0, CONCATSW) \
  52     X("noconcat", 0, NCONCATSW) \
  53     X("textonly", 0, TEXTONLYSW) \
  54     X("notextonly", 0, NTEXTONLYSW) \
  55     X("inlineonly", 0, INLINESW) \
  56     X("noinlineonly", 0, NINLINESW) \
  57     X("file file", 0, FILESW) \
  58     X("form formfile", 0, FORMSW) \
  59     X("header", 0, HEADSW) \
  60     X("noheader", 0, NHEADSW) \
  61     X("headerform formfile", 0, HEADFORMSW) \
  62     X("markform formfile", 0, MARKFORMSW) \
  63     X("part number", 0, PARTSW) \
  64     X("type content", 0, TYPESW) \
  65     X("prefer content", 0, PREFERSW) \
  66     X("noprefer", 0, NPREFERSW) \
  67     X("rcache policy", 0, RCACHESW) \
  68     X("wcache policy", 0, WCACHESW) \
  69     X("version", 0, VERSIONSW) \
  70     X("help", 0, HELPSW) \
  71     /*                                  \
  72      * switches for moreproc/mhlproc    \
  73      */                                 \
  74     X("moreproc program", -4, PROGSW) \
  75     X("nomoreproc", -3, NPROGSW) \
  76     X("length lines", -4, LENSW) \
  77     X("width columns", -4, WIDTHSW) \
  78     /*                          \
  79      * switches for debugging   \
  80      */                         \
  81     X("debug", -5, DEBUGSW) \
  82
  83 #define X(sw, minchars, id) id,
  84 DEFINE_SWITCH_ENUM(MHSHOW);
  85 #undef X
  86
  87 #define X(sw, minchars, id) { sw, minchars, id },
  88 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  89 #undef X
  90
  91
  92 int debugsw = 0;
  93 int verbosw = 0;
  94
  95 #define quitser pipeser
  96
  97 /*
  98  * static prototypes
  99  */
 100 static void pipeser (int);
 101
 102
 103 int
 104 main (int argc, char **argv)
 105 {
 106     int msgnum, *icachesw, concatsw = -1, textonly = -1, inlineonly = -1;
 107     char *cp, *file = NULL;
 108     char *maildir, buf[100], **argp;
 109     char **arguments;
 110     struct msgs_array msgs = { 0, 0, NULL };
 111     struct msgs *mp = NULL;
 112     CT ct, *ctp;
 113     FILE *fp;
 114
 115     if (nmh_init(argv[0], true, true)) { return 1; }
 116
 117     set_done(freects_done);
 118
 119     arguments = getarguments (invo_name, argc, argv, 1);
 120     argp = arguments;
 121
 122     /*
 123      * Parse arguments
 124      */
 125     while ((cp = *argp++)) {
 126         if (*cp == '-') {
 127             switch (smatch (++cp, switches)) {
 128             case AMBIGSW:
 129                 ambigsw (cp, switches);
 130                 done (1);
 131             case UNKWNSW:
 132                 die("-%s unknown", cp);
 133
 134             case HELPSW:
 135                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 136                         invo_name);
 137                 print_help (buf, switches, 1);
 138                 done (0);
 139             case VERSIONSW:
 140                 print_version(invo_name);
 141                 done (0);
 142
 143             case RCACHESW:
 144                 icachesw = &rcachesw;
 145                 goto do_cache;
 146             case WCACHESW:
 147                 icachesw = &wcachesw;
 148 do_cache:
 149                 if (!(cp = *argp++) || *cp == '-')
 150                     die("missing argument to %s", argp[-2]);
 151                 switch (*icachesw = smatch (cp, cache_policy)) {
 152                 case AMBIGSW:
 153                     ambigsw (cp, cache_policy);
 154                     done (1);
 155                 case UNKWNSW:
 156                     die("%s unknown", cp);
 157                 default:
 158                     break;
 159                 }
 160                 continue;
 161
 162             case CHECKSW:
 163                 checksw++;
 164                 continue;
 165             case NCHECKSW:
 166                 checksw = 0;
 167                 continue;
 168
 169             case CONCATSW:
 170                 concatsw = 1;
 171                 continue;
 172             case NCONCATSW:
 173                 concatsw = 0;
 174                 continue;
 175             case TEXTONLYSW:
 176                 textonly = 1;
 177                 continue;
 178             case NTEXTONLYSW:
 179                 textonly = 0;
 180                 continue;
 181             case INLINESW:
 182                 inlineonly = 1;
 183                 continue;
 184             case NINLINESW:
 185                 inlineonly = 0;
 186                 continue;
 187
 188             case PARTSW:
 189                 if (!(cp = *argp++) || *cp == '-')
 190                     die("missing argument to %s", argp[-2]);
 191                 if (npart >= NPARTS)
 192                     die("too many parts (starting with %s), %d max",
 193                            cp, NPARTS);
 194                 parts[npart++] = cp;
 195                 continue;
 196
 197             case TYPESW:
 198                 if (!(cp = *argp++) || *cp == '-')
 199                     die("missing argument to %s", argp[-2]);
 200                 if (ntype >= NTYPES)
 201                     die("too many types (starting with %s), %d max",
 202                            cp, NTYPES);
 203                 types[ntype++] = cp;
 204                 continue;
 205
 206             case PREFERSW:
 207                 if (!(cp = *argp++) || *cp == '-')
 208                     die("missing argument to %s", argp[-2]);
 209                 if (npreferred >= NPREFS)
 210                     die("too many preferred types (starting with %s), %d max",
 211                            cp, NPREFS);
 212                 mime_preference[npreferred].type = cp;
 213                 cp = strchr(cp, '/');
 214                 if (cp) *cp++ = '\0';
 215                 mime_preference[npreferred++].subtype = cp;
 216                 continue;
 217
 218             case NPREFERSW:
 219                 npreferred = 0;
 220                 continue;
 221
 222             case FILESW:
 223                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 224                     die("missing argument to %s", argp[-2]);
 225                 file = *cp == '-' ? cp : path (cp, TFILE);
 226                 continue;
 227
 228             case FORMSW:
 229                 if (!(cp = *argp++) || *cp == '-')
 230                     die("missing argument to %s", argp[-2]);
 231                 free(formsw);
 232                 formsw = mh_xstrdup(etcpath(cp));
 233                 continue;
 234
 235             case HEADSW:
 236                 headersw = 1;
 237                 continue;
 238             case NHEADSW:
 239                 headersw = 0;
 240                 continue;
 241
 242             case HEADFORMSW:
 243                 if (!(headerform = *argp++) || *headerform == '-')
 244                     die("missing argument to %s", argp[-2]);
 245                 continue;
 246
 247             case MARKFORMSW:
 248                 if (!(markerform = *argp++) || *markerform == '-')
 249                     die("missing argument to %s", argp[-2]);
 250                 continue;
 251
 252             /*
 253              * Switches for moreproc/mhlproc
 254              */
 255             case PROGSW:
 256                 if (!(progsw = *argp++) || *progsw == '-')
 257                     die("missing argument to %s", argp[-2]);
 258                 continue;
 259             case NPROGSW:
 260                 nomore++;
 261                 continue;
 262
 263             case LENSW:
 264             case WIDTHSW:
 265                 if (!(cp = *argp++) || *cp == '-')
 266                     die("missing argument to %s", argp[-2]);
 267                 continue;
 268
 269             case VERBSW:
 270                 verbosw = 1;
 271                 continue;
 272             case NVERBSW:
 273                 verbosw = 0;
 274                 continue;
 275             case DEBUGSW:
 276                 debugsw = 1;
 277                 continue;
 278             }
 279         }
 280         if (*cp == '+' || *cp == '@') {
 281             if (folder)
 282                 die("only one folder at a time!");
 283             folder = pluspath (cp);
 284         } else
 285                 app_msgarg(&msgs, cp);
 286     }
 287
 288     /* null terminate the list of acceptable parts/types */
 289     parts[npart] = NULL;
 290     types[ntype] = NULL;
 291
 292     /*
 293      * If we had any specific parts or types specified, turn off text only
 294      * content.
 295      */
 296
 297     if (npart > 0 || ntype > 0) {
 298         if (textonly == -1)
 299             textonly = 0;
 300         if (inlineonly == -1)
 301             inlineonly = 0;
 302     }
 303
 304     /*
 305      * Check if we've specified an additional profile
 306      */
 307     if ((cp = getenv ("MHSHOW"))) {
 308         if ((fp = fopen (cp, "r"))) {
 309             readconfig(NULL, fp, cp, 0);
 310             fclose (fp);
 311         } else {
 312             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 313         }
 314     }
 315
 316     /*
 317      * Read the standard profile setup
 318      */
 319     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 320         readconfig(NULL, fp, cp, 0);
 321         fclose (fp);
 322     }
 323
 324     /* Check for public cache location */
 325     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 326         cache_public = NULL;
 327
 328     /* Check for private cache location */
 329     if (!(cache_private = context_find (nmhprivcache)))
 330         cache_private = ".cache";
 331     cache_private = mh_xstrdup(m_maildir(cache_private));
 332
 333     if (!context_find ("path"))
 334         free (path ("./", TFOLDER));
 335
 336     if (file && msgs.size)
 337         die("cannot specify msg and file at same time!");
 338
 339     /*
 340      * check if message is coming from file
 341      */
 342     if (file) {
 343         cts = mh_xcalloc(2, sizeof *cts);
 344         ctp = cts;
 345
 346         if ((ct = parse_mime (file)))
 347             *ctp++ = ct;
 348
 349         headersw = 0;
 350     } else {
 351         /*
 352          * message(s) are coming from a folder
 353          */
 354         if (!msgs.size)
 355             app_msgarg(&msgs, "cur");
 356         if (!folder)
 357             folder = getfolder (1);
 358         maildir = m_maildir (folder);
 359
 360         if (chdir (maildir) == NOTOK)
 361             adios (maildir, "unable to change directory to");
 362
 363         /* read folder and create message structure */
 364         if (!(mp = folder_read (folder, 1)))
 365             die("unable to read folder %s", folder);
 366
 367         /* check for empty folder */
 368         if (mp->nummsg == 0)
 369             die("no messages in %s", folder);
 370
 371         /* parse all the message ranges/sequences and set SELECTED */
 372         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 373             if (!m_convert (mp, msgs.msgs[msgnum]))
 374                 done (1);
 375
 376         /*
 377          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 378          * since we will use that as a tag to know which messages
 379          * to remove from the "unseen" sequence.
 380          */
 381         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 382             if (is_selected(mp, msgnum))
 383                 set_unseen (mp, msgnum);
 384
 385         seq_setprev (mp);       /* set the Previous-Sequence */
 386         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 387
 388         cts = mh_xcalloc(mp->numsel + 1, sizeof *cts);
 389         ctp = cts;
 390
 391         /*
 392          * Parse all the SELECTED messages.
 393          */
 394         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 395             if (is_selected(mp, msgnum)) {
 396                 char *msgnam;
 397
 398                 msgnam = m_name (msgnum);
 399                 if ((ct = parse_mime (msgnam)))
 400                     *ctp++ = ct;
 401             }
 402         }
 403     }
 404
 405     if (!*cts)
 406         done (1);
 407
 408     userrs = true;
 409     SIGNAL (SIGQUIT, quitser);
 410     SIGNAL (SIGPIPE, pipeser);
 411
 412     /*
 413      * Get the associated umask for the relevant contents.
 414      */
 415     for (ctp = cts; *ctp; ctp++) {
 416         struct stat st;
 417
 418         ct = *ctp;
 419         if (type_ok (ct, 1) && !ct->c_umask) {
 420             if (stat (ct->c_file, &st) != NOTOK)
 421                 ct->c_umask = ~(st.st_mode & 0777);
 422             else
 423                 ct->c_umask = ~m_gmprot();
 424         }
 425     }
 426
 427     /* If reading from a folder, do some updating */
 428     if (mp) {
 429         context_replace (pfolder, folder);/* update current folder  */
 430         seq_setcur (mp, mp->hghsel);      /* update current message */
 431         seq_save (mp);                    /* synchronize sequences  */
 432         context_save ();                  /* save the context file  */
 433     }
 434
 435     if (concatsw)
 436         m_popen(moreproc, 0);
 437
 438     /*
 439      * Show the message content
 440      */
 441     show_all_messages (cts, concatsw, textonly, inlineonly);
 442
 443     /* Now free all the structures for the content */
 444     for (ctp = cts; *ctp; ctp++)
 445         free_content (*ctp);
 446
 447     free(cts);
 448     cts = NULL;
 449
 450     if (concatsw)
 451         m_pclose();
 452
 453     done (0);
 454     return 1;
 455 }
 456
 457
 458 static void
 459 pipeser (int i)
 460 {
 461     if (i == SIGQUIT) {
 462         fflush (stdout);
 463         fprintf (stderr, "\n");
 464         fflush (stderr);
 465     }
 466
 467     done (1);
 468     /* NOTREACHED */
 469 }