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