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 nomore;      /* flags for moreproc/header display */
  73 extern char *formsw;
  74
  75 /* mhmisc.c */
  76 extern int npart;
  77 extern int ntype;
  78 extern char *parts[NPARTS + 1];
  79 extern char *types[NTYPES + 1];
  80 extern int userrs;
  81
  82 int debugsw = 0;
  83 int verbosw = 0;
  84
  85 #define quitser pipeser
  86
  87 /* mhparse.c */
  88 CT parse_mime (char *);
  89
  90 /* mhmisc.c */
  91 int part_ok (CT, int);
  92 int type_ok (CT, int);
  93 void flush_errors (void);
  94
  95 /* mhshowsbr.c */
  96 void show_all_messages (CT *);
  97
  98 /* mhfree.c */
  99 extern CT *cts;
 100 void freects_done (int) NORETURN;
 101
 102 /*
 103  * static prototypes
 104  */
 105 static void pipeser (int);
 106
 107
 108 int
 109 main (int argc, char **argv)
 110 {
 111     int msgnum, *icachesw;
 112     char *cp, *file = NULL, *folder = NULL;
 113     char *maildir, buf[100], **argp;
 114     char **arguments;
 115     struct msgs_array msgs = { 0, 0, NULL };
 116     struct msgs *mp = NULL;
 117     CT ct, *ctp;
 118     FILE *fp;
 119
 120     done=freects_done;
 121
 122 #ifdef LOCALE
 123     setlocale(LC_ALL, "");
 124 #endif
 125     invo_name = r1bindex (argv[0], '/');
 126
 127     /* read user profile/context */
 128     context_read();
 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 PAUSESW:
 181                 pausesw = 1;
 182                 continue;
 183             case NPAUSESW:
 184                 pausesw = 0;
 185                 continue;
 186
 187             case SERIALSW:
 188                 serialsw = 1;
 189                 continue;
 190             case NSERIALSW:
 191                 serialsw = 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 FILESW:
 213                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 214                     adios (NULL, "missing argument to %s", argp[-2]);
 215                 file = *cp == '-' ? cp : path (cp, TFILE);
 216                 continue;
 217
 218             case FORMSW:
 219                 if (!(cp = *argp++) || *cp == '-')
 220                     adios (NULL, "missing argument to %s", argp[-2]);
 221                 if (formsw)
 222                     free (formsw);
 223                 formsw = getcpy (etcpath (cp));
 224                 continue;
 225
 226             /*
 227              * Switches for moreproc/mhlproc
 228              */
 229             case PROGSW:
 230                 if (!(progsw = *argp++) || *progsw == '-')
 231                     adios (NULL, "missing argument to %s", argp[-2]);
 232                 continue;
 233             case NPROGSW:
 234                 nomore++;
 235                 continue;
 236
 237             case LENSW:
 238             case WIDTHSW:
 239                 if (!(cp = *argp++) || *cp == '-')
 240                     adios (NULL, "missing argument to %s", argp[-2]);
 241                 continue;
 242
 243             case VERBSW:
 244                 verbosw = 1;
 245                 continue;
 246             case NVERBSW:
 247                 verbosw = 0;
 248                 continue;
 249             case DEBUGSW:
 250                 debugsw = 1;
 251                 continue;
 252             }
 253         }
 254         if (*cp == '+' || *cp == '@') {
 255             if (folder)
 256                 adios (NULL, "only one folder at a time!");
 257             else
 258                 folder = pluspath (cp);
 259         } else
 260                 app_msgarg(&msgs, cp);
 261     }
 262
 263     /* null terminate the list of acceptable parts/types */
 264     parts[npart] = NULL;
 265     types[ntype] = NULL;
 266
 267     /*
 268      * Check if we've specified an additional profile
 269      */
 270     if ((cp = getenv ("MHSHOW"))) {
 271         if ((fp = fopen (cp, "r"))) {
 272             readconfig ((struct node **) 0, fp, cp, 0);
 273             fclose (fp);
 274         } else {
 275             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 276         }
 277     }
 278
 279     /*
 280      * Read the standard profile setup
 281      */
 282     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 283         readconfig ((struct node **) 0, fp, cp, 0);
 284         fclose (fp);
 285     }
 286
 287     /* Check for public cache location */
 288     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 289         cache_public = NULL;
 290
 291     /* Check for private cache location */
 292     if (!(cache_private = context_find (nmhprivcache)))
 293         cache_private = ".cache";
 294     cache_private = getcpy (m_maildir (cache_private));
 295
 296     /*
 297      * Check for storage directory.  If specified,
 298      * then store temporary files there.  Else we
 299      * store them in standard nmh directory.
 300      */
 301     if ((cp = context_find (nmhstorage)) && *cp)
 302         tmp = concat (cp, "/", invo_name, NULL);
 303     else
 304         tmp = add (m_maildir (invo_name), NULL);
 305
 306     if (!context_find ("path"))
 307         free (path ("./", TFOLDER));
 308
 309     if (file && msgs.size)
 310         adios (NULL, "cannot specify msg and file at same time!");
 311
 312     /*
 313      * check if message is coming from file
 314      */
 315     if (file) {
 316         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 317             adios (NULL, "out of memory");
 318         ctp = cts;
 319
 320         if ((ct = parse_mime (file)))
 321             *ctp++ = ct;
 322     } else {
 323         /*
 324          * message(s) are coming from a folder
 325          */
 326         if (!msgs.size)
 327             app_msgarg(&msgs, "cur");
 328         if (!folder)
 329             folder = getfolder (1);
 330         maildir = m_maildir (folder);
 331
 332         if (chdir (maildir) == NOTOK)
 333             adios (maildir, "unable to change directory to");
 334
 335         /* read folder and create message structure */
 336         if (!(mp = folder_read (folder, 1)))
 337             adios (NULL, "unable to read folder %s", folder);
 338
 339         /* check for empty folder */
 340         if (mp->nummsg == 0)
 341             adios (NULL, "no messages in %s", folder);
 342
 343         /* parse all the message ranges/sequences and set SELECTED */
 344         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 345             if (!m_convert (mp, msgs.msgs[msgnum]))
 346                 done (1);
 347
 348         /*
 349          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 350          * since we will use that as a tag to know which messages
 351          * to remove from the "unseen" sequence.
 352          */
 353         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 354             if (is_selected(mp, msgnum))
 355                 set_unseen (mp, msgnum);
 356
 357         seq_setprev (mp);       /* set the Previous-Sequence */
 358         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 359
 360         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 361             adios (NULL, "out of memory");
 362         ctp = cts;
 363
 364         /*
 365          * Parse all the SELECTED messages.
 366          */
 367         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 368             if (is_selected(mp, msgnum)) {
 369                 char *msgnam;
 370
 371                 msgnam = m_name (msgnum);
 372                 if ((ct = parse_mime (msgnam)))
 373                     *ctp++ = ct;
 374             }
 375         }
 376     }
 377
 378     if (!*cts)
 379         done (1);
 380
 381     userrs = 1;
 382     SIGNAL (SIGQUIT, quitser);
 383     SIGNAL (SIGPIPE, pipeser);
 384
 385     /*
 386      * Get the associated umask for the relevant contents.
 387      */
 388     for (ctp = cts; *ctp; ctp++) {
 389         struct stat st;
 390
 391         ct = *ctp;
 392         if (type_ok (ct, 1) && !ct->c_umask) {
 393             if (stat (ct->c_file, &st) != NOTOK)
 394                 ct->c_umask = ~(st.st_mode & 0777);
 395             else
 396                 ct->c_umask = ~m_gmprot();
 397         }
 398     }
 399
 400     /* If reading from a folder, do some updating */
 401     if (mp) {
 402         context_replace (pfolder, folder);/* update current folder  */
 403         seq_setcur (mp, mp->hghsel);      /* update current message */
 404         seq_save (mp);                    /* synchronize sequences  */
 405         context_save ();                  /* save the context file  */
 406     }
 407
 408     /*
 409      * Show the message content
 410      */
 411     show_all_messages (cts);
 412
 413     /* Now free all the structures for the content */
 414     for (ctp = cts; *ctp; ctp++)
 415         free_content (*ctp);
 416
 417     free ((char *) cts);
 418     cts = NULL;
 419
 420     done (0);
 421     return 1;
 422 }
 423
 424
 425 static void
 426 pipeser (int i)
 427 {
 428     if (i == SIGQUIT) {
 429         fflush (stdout);
 430         fprintf (stderr, "\n");
 431         fflush (stderr);
 432     }
 433
 434     done (1);
 435     /* NOTREACHED */
 436 }