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("pause", 0, PAUSESW) \
  25     X("nopause", 0, NPAUSESW) \
  26     X("serialonly", 0, SERIALSW) \
  27     X("noserialonly", 0, NSERIALSW) \
  28     X("verbose", 0, VERBSW) \
  29     X("noverbose", 0, NVERBSW) \
  30     X("file file", 0, FILESW) \
  31     X("form formfile", 0, FORMSW) \
  32     X("part number", 0, PARTSW) \
  33     X("type content", 0, TYPESW) \
  34     X("rcache policy", 0, RCACHESW) \
  35     X("wcache policy", 0, WCACHESW) \
  36     X("version", 0, VERSIONSW) \
  37     X("help", 0, HELPSW) \
  38     /*                                  \
  39      * switches for moreproc/mhlproc    \
  40      */                                 \
  41     X("moreproc program", -4, PROGSW) \
  42     X("nomoreproc", -3, NPROGSW) \
  43     X("length lines", -4, LENSW) \
  44     X("width columns", -4, WIDTHSW) \
  45     /*                          \
  46      * switches for debugging   \
  47      */                         \
  48     X("debug", -5, DEBUGSW) \
  49
  50 #define X(sw, minchars, id) id,
  51 DEFINE_SWITCH_ENUM(MHSHOW);
  52 #undef X
  53
  54 #define X(sw, minchars, id) { sw, minchars, id },
  55 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  56 #undef X
  57
  58
  59 /* mhparse.c */
  60 extern char *tmp;       /* directory to place temp files */
  61
  62 /* mhcachesbr.c */
  63 extern int rcachesw;
  64 extern int wcachesw;
  65 extern char *cache_public;
  66 extern char *cache_private;
  67
  68 /* mhshowsbr.c */
  69 extern int pausesw;
  70 extern int serialsw;
  71 extern char *progsw;
  72 extern int nolist;
  73 extern int nomore;      /* flags for moreproc/header display */
  74 extern char *formsw;
  75
  76 /* mhmisc.c */
  77 extern int npart;
  78 extern int ntype;
  79 extern char *parts[NPARTS + 1];
  80 extern char *types[NTYPES + 1];
  81 extern int userrs;
  82
  83 int debugsw = 0;
  84 int verbosw = 0;
  85
  86 #define quitser pipeser
  87
  88 /* mhparse.c */
  89 CT parse_mime (char *);
  90
  91 /* mhmisc.c */
  92 int part_ok (CT, int);
  93 int type_ok (CT, int);
  94 void flush_errors (void);
  95
  96 /* mhshowsbr.c */
  97 void show_all_messages (CT *);
  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;
 113     char *cp, *file = NULL, *folder = 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     done=freects_done;
 122
 123 #ifdef LOCALE
 124     setlocale(LC_ALL, "");
 125 #endif
 126     invo_name = r1bindex (argv[0], '/');
 127
 128     /* read user profile/context */
 129     context_read();
 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 PAUSESW:
 182                 pausesw = 1;
 183                 continue;
 184             case NPAUSESW:
 185                 pausesw = 0;
 186                 continue;
 187
 188             case SERIALSW:
 189                 serialsw = 1;
 190                 continue;
 191             case NSERIALSW:
 192                 serialsw = 0;
 193                 continue;
 194
 195             case PARTSW:
 196                 if (!(cp = *argp++) || *cp == '-')
 197                     adios (NULL, "missing argument to %s", argp[-2]);
 198                 if (npart >= NPARTS)
 199                     adios (NULL, "too many parts (starting with %s), %d max",
 200                            cp, NPARTS);
 201                 parts[npart++] = cp;
 202                 continue;
 203
 204             case TYPESW:
 205                 if (!(cp = *argp++) || *cp == '-')
 206                     adios (NULL, "missing argument to %s", argp[-2]);
 207                 if (ntype >= NTYPES)
 208                     adios (NULL, "too many types (starting with %s), %d max",
 209                            cp, NTYPES);
 210                 types[ntype++] = cp;
 211                 continue;
 212
 213             case FILESW:
 214                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 215                     adios (NULL, "missing argument to %s", argp[-2]);
 216                 file = *cp == '-' ? cp : path (cp, TFILE);
 217                 continue;
 218
 219             case FORMSW:
 220                 if (!(cp = *argp++) || *cp == '-')
 221                     adios (NULL, "missing argument to %s", argp[-2]);
 222                 if (formsw)
 223                     free (formsw);
 224                 formsw = getcpy (etcpath (cp));
 225                 continue;
 226
 227             /*
 228              * Switches for moreproc/mhlproc
 229              */
 230             case PROGSW:
 231                 if (!(progsw = *argp++) || *progsw == '-')
 232                     adios (NULL, "missing argument to %s", argp[-2]);
 233                 continue;
 234             case NPROGSW:
 235                 nomore++;
 236                 continue;
 237
 238             case LENSW:
 239             case WIDTHSW:
 240                 if (!(cp = *argp++) || *cp == '-')
 241                     adios (NULL, "missing argument to %s", argp[-2]);
 242                 continue;
 243
 244             case VERBSW:
 245                 verbosw = 1;
 246                 continue;
 247             case NVERBSW:
 248                 verbosw = 0;
 249                 continue;
 250             case DEBUGSW:
 251                 debugsw = 1;
 252                 continue;
 253             }
 254         }
 255         if (*cp == '+' || *cp == '@') {
 256             if (folder)
 257                 adios (NULL, "only one folder at a time!");
 258             else
 259                 folder = pluspath (cp);
 260         } else
 261                 app_msgarg(&msgs, cp);
 262     }
 263
 264     /* null terminate the list of acceptable parts/types */
 265     parts[npart] = NULL;
 266     types[ntype] = NULL;
 267
 268     /*
 269      * Check if we've specified an additional profile
 270      */
 271     if ((cp = getenv ("MHSHOW"))) {
 272         if ((fp = fopen (cp, "r"))) {
 273             readconfig ((struct node **) 0, fp, cp, 0);
 274             fclose (fp);
 275         } else {
 276             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 277         }
 278     }
 279
 280     /*
 281      * Read the standard profile setup
 282      */
 283     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 284         readconfig ((struct node **) 0, fp, cp, 0);
 285         fclose (fp);
 286     }
 287
 288     /* Check for public cache location */
 289     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 290         cache_public = NULL;
 291
 292     /* Check for private cache location */
 293     if (!(cache_private = context_find (nmhprivcache)))
 294         cache_private = ".cache";
 295     cache_private = getcpy (m_maildir (cache_private));
 296
 297     /*
 298      * Check for storage directory.  If specified,
 299      * then store temporary files there.  Else we
 300      * store them in standard nmh directory.
 301      */
 302     if ((cp = context_find (nmhstorage)) && *cp)
 303         tmp = concat (cp, "/", invo_name, NULL);
 304     else
 305         tmp = add (m_maildir (invo_name), NULL);
 306
 307     if (!context_find ("path"))
 308         free (path ("./", TFOLDER));
 309
 310     if (file && msgs.size)
 311         adios (NULL, "cannot specify msg and file at same time!");
 312
 313     /*
 314      * check if message is coming from file
 315      */
 316     if (file) {
 317         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 318             adios (NULL, "out of memory");
 319         ctp = cts;
 320
 321         if ((ct = parse_mime (file)))
 322             *ctp++ = ct;
 323     } else {
 324         /*
 325          * message(s) are coming from a folder
 326          */
 327         if (!msgs.size)
 328             app_msgarg(&msgs, "cur");
 329         if (!folder)
 330             folder = getfolder (1);
 331         maildir = m_maildir (folder);
 332
 333         if (chdir (maildir) == NOTOK)
 334             adios (maildir, "unable to change directory to");
 335
 336         /* read folder and create message structure */
 337         if (!(mp = folder_read (folder, 1)))
 338             adios (NULL, "unable to read folder %s", folder);
 339
 340         /* check for empty folder */
 341         if (mp->nummsg == 0)
 342             adios (NULL, "no messages in %s", folder);
 343
 344         /* parse all the message ranges/sequences and set SELECTED */
 345         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 346             if (!m_convert (mp, msgs.msgs[msgnum]))
 347                 done (1);
 348
 349         /*
 350          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 351          * since we will use that as a tag to know which messages
 352          * to remove from the "unseen" sequence.
 353          */
 354         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 355             if (is_selected(mp, msgnum))
 356                 set_unseen (mp, msgnum);
 357
 358         seq_setprev (mp);       /* set the Previous-Sequence */
 359         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 360
 361         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 362             adios (NULL, "out of memory");
 363         ctp = cts;
 364
 365         /*
 366          * Parse all the SELECTED messages.
 367          */
 368         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 369             if (is_selected(mp, msgnum)) {
 370                 char *msgnam;
 371
 372                 msgnam = m_name (msgnum);
 373                 if ((ct = parse_mime (msgnam)))
 374                     *ctp++ = ct;
 375             }
 376         }
 377     }
 378
 379     if (!*cts)
 380         done (1);
 381
 382     userrs = 1;
 383     SIGNAL (SIGQUIT, quitser);
 384     SIGNAL (SIGPIPE, pipeser);
 385
 386     /*
 387      * Get the associated umask for the relevant contents.
 388      */
 389     for (ctp = cts; *ctp; ctp++) {
 390         struct stat st;
 391
 392         ct = *ctp;
 393         if (type_ok (ct, 1) && !ct->c_umask) {
 394             if (stat (ct->c_file, &st) != NOTOK)
 395                 ct->c_umask = ~(st.st_mode & 0777);
 396             else
 397                 ct->c_umask = ~m_gmprot();
 398         }
 399     }
 400
 401     /* If reading from a folder, do some updating */
 402     if (mp) {
 403         context_replace (pfolder, folder);/* update current folder  */
 404         seq_setcur (mp, mp->hghsel);      /* update current message */
 405         seq_save (mp);                    /* synchronize sequences  */
 406         context_save ();                  /* save the context file  */
 407     }
 408
 409     /*
 410      * Show the message content
 411      */
 412     show_all_messages (cts);
 413
 414     /* Now free all the structures for the content */
 415     for (ctp = cts; *ctp; ctp++)
 416         free_content (*ctp);
 417
 418     free ((char *) cts);
 419     cts = NULL;
 420
 421     done (0);
 422     return 1;
 423 }
 424
 425
 426 static void
 427 pipeser (int i)
 428 {
 429     if (i == SIGQUIT) {
 430         fflush (stdout);
 431         fprintf (stderr, "\n");
 432         fflush (stderr);
 433     }
 434
 435     done (1);
 436     /* NOTREACHED */
 437 }