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