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

   1 /*
   2  * mhshow.c -- display 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 <h/md5.h>
  13 #include <h/mts.h>
  14 #include <h/tws.h>
  15 #include <h/mime.h>
  16 #include <h/mhparse.h>
  17 #include <h/mhcachesbr.h>
  18 #include <h/utils.h>
  19
  20 #define MHSHOW_SWITCHES \
  21     X("check", 0, CHECKSW) \
  22     X("nocheck", 0, NCHECKSW) \
  23     X("verbose", 0, VERBSW) \
  24     X("noverbose", 0, NVERBSW) \
  25     X("concat", 0, CONCATSW) \
  26     X("noconcat", 0, NCONCATSW) \
  27     X("textonly", 0, TEXTONLYSW) \
  28     X("notextonly", 0, NTEXTONLYSW) \
  29     X("inlineonly", 0, INLINESW) \
  30     X("noinlineonly", 0, NINLINESW) \
  31     X("file file", 0, FILESW) \
  32     X("form formfile", 0, FORMSW) \
  33     X("header", 0, HEADSW) \
  34     X("noheader", 0, NHEADSW) \
  35     X("headerform formfile", 0, HEADFORMSW) \
  36     X("markform formfile", 0, MARKFORMSW) \
  37     X("part number", 0, PARTSW) \
  38     X("type content", 0, TYPESW) \
  39     X("prefer content", 0, PREFERSW) \
  40     X("rcache policy", 0, RCACHESW) \
  41     X("wcache policy", 0, WCACHESW) \
  42     X("version", 0, VERSIONSW) \
  43     X("help", 0, HELPSW) \
  44     /*                                  \
  45      * switches for moreproc/mhlproc    \
  46      */                                 \
  47     X("moreproc program", -4, PROGSW) \
  48     X("nomoreproc", -3, NPROGSW) \
  49     X("length lines", -4, LENSW) \
  50     X("width columns", -4, WIDTHSW) \
  51     /*                          \
  52      * switches for debugging   \
  53      */                         \
  54     X("debug", -5, DEBUGSW) \
  55
  56 #define X(sw, minchars, id) id,
  57 DEFINE_SWITCH_ENUM(MHSHOW);
  58 #undef X
  59
  60 #define X(sw, minchars, id) { sw, minchars, id },
  61 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  62 #undef X
  63
  64
  65 /* mhcachesbr.c */
  66 extern int rcachesw;
  67 extern int wcachesw;
  68 extern char *cache_public;
  69 extern char *cache_private;
  70
  71 /* mhshowsbr.c */
  72 extern char *progsw;
  73 extern int nomore;      /* flags for moreproc/header display */
  74 extern char *formsw;
  75 extern char *folder;
  76 extern char *headerform;
  77 extern char *markerform;
  78 extern int headersw;
  79
  80 /* mhmisc.c */
  81 extern int npart;
  82 extern int ntype;
  83 extern char *parts[NPARTS + 1];
  84 extern char *types[NTYPES + 1];
  85 extern int userrs;
  86
  87 /* mhparse.c */
  88 extern char *preferred_types[];
  89 extern  char *preferred_subtypes[];
  90 extern int npreferred;
  91
  92 int debugsw = 0;
  93 int verbosw = 0;
  94
  95 #define quitser pipeser
  96
  97 /* mhparse.c */
  98 CT parse_mime (char *);
  99
 100 /* mhmisc.c */
 101 int part_ok (CT);
 102 int type_ok (CT, int);
 103 void flush_errors (void);
 104
 105 /* mhfree.c */
 106 extern CT *cts;
 107 void freects_done (int) NORETURN;
 108
 109 /*
 110  * static prototypes
 111  */
 112 static void pipeser (int);
 113
 114
 115 int
 116 main (int argc, char **argv)
 117 {
 118     int msgnum, *icachesw, concatsw = -1, textonly = -1, inlineonly = -1;
 119     char *cp, *file = NULL;
 120     char *maildir, buf[100], **argp;
 121     char **arguments;
 122     struct msgs_array msgs = { 0, 0, NULL };
 123     struct msgs *mp = NULL;
 124     CT ct, *ctp;
 125     FILE *fp;
 126
 127     if (nmh_init(argv[0], 1)) { return 1; }
 128
 129     done=freects_done;
 130
 131     arguments = getarguments (invo_name, argc, argv, 1);
 132     argp = arguments;
 133
 134     /*
 135      * Parse arguments
 136      */
 137     while ((cp = *argp++)) {
 138         if (*cp == '-') {
 139             switch (smatch (++cp, switches)) {
 140             case AMBIGSW:
 141                 ambigsw (cp, switches);
 142                 done (1);
 143             case UNKWNSW:
 144                 adios (NULL, "-%s unknown", cp);
 145
 146             case HELPSW:
 147                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 148                         invo_name);
 149                 print_help (buf, switches, 1);
 150                 done (0);
 151             case VERSIONSW:
 152                 print_version(invo_name);
 153                 done (0);
 154
 155             case RCACHESW:
 156                 icachesw = &rcachesw;
 157                 goto do_cache;
 158             case WCACHESW:
 159                 icachesw = &wcachesw;
 160 do_cache:
 161                 if (!(cp = *argp++) || *cp == '-')
 162                     adios (NULL, "missing argument to %s", argp[-2]);
 163                 switch (*icachesw = smatch (cp, caches)) {
 164                 case AMBIGSW:
 165                     ambigsw (cp, caches);
 166                     done (1);
 167                 case UNKWNSW:
 168                     adios (NULL, "%s unknown", cp);
 169                 default:
 170                     break;
 171                 }
 172                 continue;
 173
 174             case CHECKSW:
 175                 checksw++;
 176                 continue;
 177             case NCHECKSW:
 178                 checksw = 0;
 179                 continue;
 180
 181             case CONCATSW:
 182                 concatsw = 1;
 183                 continue;
 184             case NCONCATSW:
 185                 concatsw = 0;
 186                 continue;
 187             case TEXTONLYSW:
 188                 textonly = 1;
 189                 continue;
 190             case NTEXTONLYSW:
 191                 textonly = 0;
 192                 continue;
 193             case INLINESW:
 194                 inlineonly = 1;
 195                 continue;
 196             case NINLINESW:
 197                 inlineonly = 0;
 198                 continue;
 199
 200             case PARTSW:
 201                 if (!(cp = *argp++) || *cp == '-')
 202                     adios (NULL, "missing argument to %s", argp[-2]);
 203                 if (npart >= NPARTS)
 204                     adios (NULL, "too many parts (starting with %s), %d max",
 205                            cp, NPARTS);
 206                 parts[npart++] = cp;
 207                 continue;
 208
 209             case TYPESW:
 210                 if (!(cp = *argp++) || *cp == '-')
 211                     adios (NULL, "missing argument to %s", argp[-2]);
 212                 if (ntype >= NTYPES)
 213                     adios (NULL, "too many types (starting with %s), %d max",
 214                            cp, NTYPES);
 215                 types[ntype++] = cp;
 216                 continue;
 217
 218             case PREFERSW:
 219                 if (!(cp = *argp++) || *cp == '-')
 220                     adios (NULL, "missing argument to %s", argp[-2]);
 221                 if (npreferred >= NPREFS)
 222                     adios (NULL, "too many preferred types (starting with %s), %d max",
 223                            cp, NPREFS);
 224                 preferred_types[npreferred] = cp;
 225                 cp = strchr(cp, '/');
 226                 if (cp) *cp++ = '\0';
 227                 preferred_subtypes[npreferred++] = cp;
 228                 continue;
 229
 230             case FILESW:
 231                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 232                     adios (NULL, "missing argument to %s", argp[-2]);
 233                 file = *cp == '-' ? cp : path (cp, TFILE);
 234                 continue;
 235
 236             case FORMSW:
 237                 if (!(cp = *argp++) || *cp == '-')
 238                     adios (NULL, "missing argument to %s", argp[-2]);
 239                 mh_xfree(formsw);
 240                 formsw = getcpy (etcpath (cp));
 241                 continue;
 242
 243             case HEADSW:
 244                 headersw = 1;
 245                 continue;
 246             case NHEADSW:
 247                 headersw = 0;
 248                 continue;
 249
 250             case HEADFORMSW:
 251                 if (!(headerform = *argp++) || *headerform == '-')
 252                     adios (NULL, "missing argument to %s", argp[-2]);
 253                 continue;
 254
 255             case MARKFORMSW:
 256                 if (!(markerform = *argp++) || *markerform == '-')
 257                     adios (NULL, "missing argument to %s", argp[-2]);
 258                 continue;
 259
 260             /*
 261              * Switches for moreproc/mhlproc
 262              */
 263             case PROGSW:
 264                 if (!(progsw = *argp++) || *progsw == '-')
 265                     adios (NULL, "missing argument to %s", argp[-2]);
 266                 continue;
 267             case NPROGSW:
 268                 nomore++;
 269                 continue;
 270
 271             case LENSW:
 272             case WIDTHSW:
 273                 if (!(cp = *argp++) || *cp == '-')
 274                     adios (NULL, "missing argument to %s", argp[-2]);
 275                 continue;
 276
 277             case VERBSW:
 278                 verbosw = 1;
 279                 continue;
 280             case NVERBSW:
 281                 verbosw = 0;
 282                 continue;
 283             case DEBUGSW:
 284                 debugsw = 1;
 285                 continue;
 286             }
 287         }
 288         if (*cp == '+' || *cp == '@') {
 289             if (folder)
 290                 adios (NULL, "only one folder at a time!");
 291             else
 292                 folder = pluspath (cp);
 293         } else
 294                 app_msgarg(&msgs, cp);
 295     }
 296
 297     /* null terminate the list of acceptable parts/types */
 298     parts[npart] = NULL;
 299     types[ntype] = NULL;
 300
 301     /*
 302      * If we had any specific parts or types specified, turn off text only
 303      * content.
 304      */
 305
 306     if (npart > 0 || ntype > 0) {
 307         if (textonly == -1)
 308             textonly = 0;
 309         if (inlineonly == -1)
 310             inlineonly = 0;
 311     }
 312
 313     /*
 314      * Check if we've specified an additional profile
 315      */
 316     if ((cp = getenv ("MHSHOW"))) {
 317         if ((fp = fopen (cp, "r"))) {
 318             readconfig ((struct node **) 0, fp, cp, 0);
 319             fclose (fp);
 320         } else {
 321             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 322         }
 323     }
 324
 325     /*
 326      * Read the standard profile setup
 327      */
 328     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 329         readconfig ((struct node **) 0, fp, cp, 0);
 330         fclose (fp);
 331     }
 332
 333     /* Check for public cache location */
 334     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 335         cache_public = NULL;
 336
 337     /* Check for private cache location */
 338     if (!(cache_private = context_find (nmhprivcache)))
 339         cache_private = ".cache";
 340     cache_private = getcpy (m_maildir (cache_private));
 341
 342     if (!context_find ("path"))
 343         free (path ("./", TFOLDER));
 344
 345     if (file && msgs.size)
 346         adios (NULL, "cannot specify msg and file at same time!");
 347
 348     /*
 349      * check if message is coming from file
 350      */
 351     if (file) {
 352         cts = mh_xcalloc(2, sizeof *cts);
 353         ctp = cts;
 354
 355         if ((ct = parse_mime (file)))
 356             *ctp++ = ct;
 357
 358         headersw = 0;
 359     } else {
 360         /*
 361          * message(s) are coming from a folder
 362          */
 363         if (!msgs.size)
 364             app_msgarg(&msgs, "cur");
 365         if (!folder)
 366             folder = getfolder (1);
 367         maildir = m_maildir (folder);
 368
 369         if (chdir (maildir) == NOTOK)
 370             adios (maildir, "unable to change directory to");
 371
 372         /* read folder and create message structure */
 373         if (!(mp = folder_read (folder, 1)))
 374             adios (NULL, "unable to read folder %s", folder);
 375
 376         /* check for empty folder */
 377         if (mp->nummsg == 0)
 378             adios (NULL, "no messages in %s", folder);
 379
 380         /* parse all the message ranges/sequences and set SELECTED */
 381         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 382             if (!m_convert (mp, msgs.msgs[msgnum]))
 383                 done (1);
 384
 385         /*
 386          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 387          * since we will use that as a tag to know which messages
 388          * to remove from the "unseen" sequence.
 389          */
 390         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 391             if (is_selected(mp, msgnum))
 392                 set_unseen (mp, msgnum);
 393
 394         seq_setprev (mp);       /* set the Previous-Sequence */
 395         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 396
 397         cts = mh_xcalloc(mp->numsel + 1, sizeof *cts);
 398         ctp = cts;
 399
 400         /*
 401          * Parse all the SELECTED messages.
 402          */
 403         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 404             if (is_selected(mp, msgnum)) {
 405                 char *msgnam;
 406
 407                 msgnam = m_name (msgnum);
 408                 if ((ct = parse_mime (msgnam)))
 409                     *ctp++ = ct;
 410             }
 411         }
 412     }
 413
 414     if (!*cts)
 415         done (1);
 416
 417     userrs = 1;
 418     SIGNAL (SIGQUIT, quitser);
 419     SIGNAL (SIGPIPE, pipeser);
 420
 421     /*
 422      * Get the associated umask for the relevant contents.
 423      */
 424     for (ctp = cts; *ctp; ctp++) {
 425         struct stat st;
 426
 427         ct = *ctp;
 428         if (type_ok (ct, 1) && !ct->c_umask) {
 429             if (stat (ct->c_file, &st) != NOTOK)
 430                 ct->c_umask = ~(st.st_mode & 0777);
 431             else
 432                 ct->c_umask = ~m_gmprot();
 433         }
 434     }
 435
 436     /* If reading from a folder, do some updating */
 437     if (mp) {
 438         context_replace (pfolder, folder);/* update current folder  */
 439         seq_setcur (mp, mp->hghsel);      /* update current message */
 440         seq_save (mp);                    /* synchronize sequences  */
 441         context_save ();                  /* save the context file  */
 442     }
 443
 444     if (concatsw)
 445         m_popen(moreproc, 0);
 446
 447     /*
 448      * Show the message content
 449      */
 450     show_all_messages (cts, concatsw, textonly, inlineonly);
 451
 452     /* Now free all the structures for the content */
 453     for (ctp = cts; *ctp; ctp++)
 454         free_content (*ctp);
 455
 456     free(cts);
 457     cts = NULL;
 458
 459     if (concatsw)
 460         m_pclose();
 461
 462     done (0);
 463     return 1;
 464 }
 465
 466
 467 static void
 468 pipeser (int i)
 469 {
 470     if (i == SIGQUIT) {
 471         fflush (stdout);
 472         fprintf (stderr, "\n");
 473         fflush (stderr);
 474     }
 475
 476     done (1);
 477     /* NOTREACHED */
 478 }