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

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