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 <errno.h>
  15 #include <signal.h>
  16 #include <h/mts.h>
  17 #include <h/tws.h>
  18 #include <h/mime.h>
  19 #include <h/mhparse.h>
  20 #include <h/mhcachesbr.h>
  21 #include <h/utils.h>
  22
  23 #define MHSHOW_SWITCHES \
  24     X("check", 0, CHECKSW) \
  25     X("nocheck", 0, NCHECKSW) \
  26     X("pause", 0, PAUSESW) \
  27     X("nopause", 0, NPAUSESW) \
  28     X("serialonly", 0, SERIALSW) \
  29     X("noserialonly", 0, NSERIALSW) \
  30     X("verbose", 0, VERBSW) \
  31     X("noverbose", 0, NVERBSW) \
  32     X("file file", 0, FILESW) \
  33     X("form formfile", 0, FORMSW) \
  34     X("part number", 0, PARTSW) \
  35     X("type content", 0, TYPESW) \
  36     X("rcache policy", 0, RCACHESW) \
  37     X("wcache policy", 0, WCACHESW) \
  38     X("version", 0, VERSIONSW) \
  39     X("help", 0, HELPSW) \
  40     /*                                  \
  41      * switches for moreproc/mhlproc    \
  42      */                                 \
  43     X("moreproc program", -4, PROGSW) \
  44     X("nomoreproc", -3, NPROGSW) \
  45     X("length lines", -4, LENSW) \
  46     X("width columns", -4, WIDTHSW) \
  47     /*                          \
  48      * switches for debugging   \
  49      */                         \
  50     X("debug", -5, DEBUGSW) \
  51
  52 #define X(sw, minchars, id) id,
  53 DEFINE_SWITCH_ENUM(MHSHOW);
  54 #undef X
  55
  56 #define X(sw, minchars, id) { sw, minchars, id },
  57 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  58 #undef X
  59
  60
  61 /* mhparse.c */
  62 extern char *tmp;       /* directory to place temp files */
  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 int pausesw;
  72 extern int serialsw;
  73 extern char *progsw;
  74 extern int nolist;
  75 extern int nomore;      /* flags for moreproc/header display */
  76 extern char *formsw;
  77
  78 /* mhmisc.c */
  79 extern int npart;
  80 extern int ntype;
  81 extern char *parts[NPARTS + 1];
  82 extern char *types[NTYPES + 1];
  83 extern int userrs;
  84
  85 int debugsw = 0;
  86 int verbosw = 0;
  87
  88 #define quitser pipeser
  89
  90 /* mhparse.c */
  91 CT parse_mime (char *);
  92
  93 /* mhmisc.c */
  94 int part_ok (CT, int);
  95 int type_ok (CT, int);
  96 void flush_errors (void);
  97
  98 /* mhshowsbr.c */
  99 void show_all_messages (CT *);
 100
 101 /* mhfree.c */
 102 void free_content (CT);
 103 extern CT *cts;
 104 void freects_done (int) NORETURN;
 105
 106 /*
 107  * static prototypes
 108  */
 109 static void pipeser (int);
 110
 111
 112 int
 113 main (int argc, char **argv)
 114 {
 115     int msgnum, *icachesw;
 116     char *cp, *file = NULL, *folder = NULL;
 117     char *maildir, buf[100], **argp;
 118     char **arguments;
 119     struct msgs_array msgs = { 0, 0, NULL };
 120     struct msgs *mp = NULL;
 121     CT ct, *ctp;
 122     FILE *fp;
 123
 124     done=freects_done;
 125
 126 #ifdef LOCALE
 127     setlocale(LC_ALL, "");
 128 #endif
 129     invo_name = r1bindex (argv[0], '/');
 130
 131     /* read user profile/context */
 132     context_read();
 133
 134     arguments = getarguments (invo_name, argc, argv, 1);
 135     argp = arguments;
 136
 137     /*
 138      * Parse arguments
 139      */
 140     while ((cp = *argp++)) {
 141         if (*cp == '-') {
 142             switch (smatch (++cp, switches)) {
 143             case AMBIGSW:
 144                 ambigsw (cp, switches);
 145                 done (1);
 146             case UNKWNSW:
 147                 adios (NULL, "-%s unknown", cp);
 148
 149             case HELPSW:
 150                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 151                         invo_name);
 152                 print_help (buf, switches, 1);
 153                 done (0);
 154             case VERSIONSW:
 155                 print_version(invo_name);
 156                 done (0);
 157
 158             case RCACHESW:
 159                 icachesw = &rcachesw;
 160                 goto do_cache;
 161             case WCACHESW:
 162                 icachesw = &wcachesw;
 163 do_cache:
 164                 if (!(cp = *argp++) || *cp == '-')
 165                     adios (NULL, "missing argument to %s", argp[-2]);
 166                 switch (*icachesw = smatch (cp, caches)) {
 167                 case AMBIGSW:
 168                     ambigsw (cp, caches);
 169                     done (1);
 170                 case UNKWNSW:
 171                     adios (NULL, "%s unknown", cp);
 172                 default:
 173                     break;
 174                 }
 175                 continue;
 176
 177             case CHECKSW:
 178                 checksw++;
 179                 continue;
 180             case NCHECKSW:
 181                 checksw = 0;
 182                 continue;
 183
 184             case PAUSESW:
 185                 pausesw = 1;
 186                 continue;
 187             case NPAUSESW:
 188                 pausesw = 0;
 189                 continue;
 190
 191             case SERIALSW:
 192                 serialsw = 1;
 193                 continue;
 194             case NSERIALSW:
 195                 serialsw = 0;
 196                 continue;
 197
 198             case PARTSW:
 199                 if (!(cp = *argp++) || *cp == '-')
 200                     adios (NULL, "missing argument to %s", argp[-2]);
 201                 if (npart >= NPARTS)
 202                     adios (NULL, "too many parts (starting with %s), %d max",
 203                            cp, NPARTS);
 204                 parts[npart++] = cp;
 205                 continue;
 206
 207             case TYPESW:
 208                 if (!(cp = *argp++) || *cp == '-')
 209                     adios (NULL, "missing argument to %s", argp[-2]);
 210                 if (ntype >= NTYPES)
 211                     adios (NULL, "too many types (starting with %s), %d max",
 212                            cp, NTYPES);
 213                 types[ntype++] = cp;
 214                 continue;
 215
 216             case FILESW:
 217                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 218                     adios (NULL, "missing argument to %s", argp[-2]);
 219                 file = *cp == '-' ? cp : path (cp, TFILE);
 220                 continue;
 221
 222             case FORMSW:
 223                 if (!(cp = *argp++) || *cp == '-')
 224                     adios (NULL, "missing argument to %s", argp[-2]);
 225                 if (formsw)
 226                     free (formsw);
 227                 formsw = getcpy (etcpath (cp));
 228                 continue;
 229
 230             /*
 231              * Switches for moreproc/mhlproc
 232              */
 233             case PROGSW:
 234                 if (!(progsw = *argp++) || *progsw == '-')
 235                     adios (NULL, "missing argument to %s", argp[-2]);
 236                 continue;
 237             case NPROGSW:
 238                 nomore++;
 239                 continue;
 240
 241             case LENSW:
 242             case WIDTHSW:
 243                 if (!(cp = *argp++) || *cp == '-')
 244                     adios (NULL, "missing argument to %s", argp[-2]);
 245                 continue;
 246
 247             case VERBSW:
 248                 verbosw = 1;
 249                 continue;
 250             case NVERBSW:
 251                 verbosw = 0;
 252                 continue;
 253             case DEBUGSW:
 254                 debugsw = 1;
 255                 continue;
 256             }
 257         }
 258         if (*cp == '+' || *cp == '@') {
 259             if (folder)
 260                 adios (NULL, "only one folder at a time!");
 261             else
 262                 folder = pluspath (cp);
 263         } else
 264                 app_msgarg(&msgs, cp);
 265     }
 266
 267     /* null terminate the list of acceptable parts/types */
 268     parts[npart] = NULL;
 269     types[ntype] = NULL;
 270
 271     /*
 272      * Check if we've specified an additional profile
 273      */
 274     if ((cp = getenv ("MHSHOW"))) {
 275         if ((fp = fopen (cp, "r"))) {
 276             readconfig ((struct node **) 0, fp, cp, 0);
 277             fclose (fp);
 278         } else {
 279             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 280         }
 281     }
 282
 283     /*
 284      * Read the standard profile setup
 285      */
 286     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 287         readconfig ((struct node **) 0, fp, cp, 0);
 288         fclose (fp);
 289     }
 290
 291     /* Check for public cache location */
 292     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 293         cache_public = NULL;
 294
 295     /* Check for private cache location */
 296     if (!(cache_private = context_find (nmhprivcache)))
 297         cache_private = ".cache";
 298     cache_private = getcpy (m_maildir (cache_private));
 299
 300     /*
 301      * Check for storage directory.  If specified,
 302      * then store temporary files there.  Else we
 303      * store them in standard nmh directory.
 304      */
 305     if ((cp = context_find (nmhstorage)) && *cp)
 306         tmp = concat (cp, "/", invo_name, NULL);
 307     else
 308         tmp = add (m_maildir (invo_name), NULL);
 309
 310     if (!context_find ("path"))
 311         free (path ("./", TFOLDER));
 312
 313     if (file && msgs.size)
 314         adios (NULL, "cannot specify msg and file at same time!");
 315
 316     /*
 317      * check if message is coming from file
 318      */
 319     if (file) {
 320         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 321             adios (NULL, "out of memory");
 322         ctp = cts;
 323
 324         if ((ct = parse_mime (file)))
 325             *ctp++ = ct;
 326     } else {
 327         /*
 328          * message(s) are coming from a folder
 329          */
 330         if (!msgs.size)
 331             app_msgarg(&msgs, "cur");
 332         if (!folder)
 333             folder = getfolder (1);
 334         maildir = m_maildir (folder);
 335
 336         if (chdir (maildir) == NOTOK)
 337             adios (maildir, "unable to change directory to");
 338
 339         /* read folder and create message structure */
 340         if (!(mp = folder_read (folder)))
 341             adios (NULL, "unable to read folder %s", folder);
 342
 343         /* check for empty folder */
 344         if (mp->nummsg == 0)
 345             adios (NULL, "no messages in %s", folder);
 346
 347         /* parse all the message ranges/sequences and set SELECTED */
 348         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 349             if (!m_convert (mp, msgs.msgs[msgnum]))
 350                 done (1);
 351
 352         /*
 353          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 354          * since we will use that as a tag to know which messages
 355          * to remove from the "unseen" sequence.
 356          */
 357         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 358             if (is_selected(mp, msgnum))
 359                 set_unseen (mp, msgnum);
 360
 361         seq_setprev (mp);       /* set the Previous-Sequence */
 362         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 363
 364         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 365             adios (NULL, "out of memory");
 366         ctp = cts;
 367
 368         /*
 369          * Parse all the SELECTED messages.
 370          */
 371         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 372             if (is_selected(mp, msgnum)) {
 373                 char *msgnam;
 374
 375                 msgnam = m_name (msgnum);
 376                 if ((ct = parse_mime (msgnam)))
 377                     *ctp++ = ct;
 378             }
 379         }
 380     }
 381
 382     if (!*cts)
 383         done (1);
 384
 385     userrs = 1;
 386     SIGNAL (SIGQUIT, quitser);
 387     SIGNAL (SIGPIPE, pipeser);
 388
 389     /*
 390      * Get the associated umask for the relevant contents.
 391      */
 392     for (ctp = cts; *ctp; ctp++) {
 393         struct stat st;
 394
 395         ct = *ctp;
 396         if (type_ok (ct, 1) && !ct->c_umask) {
 397             if (stat (ct->c_file, &st) != NOTOK)
 398                 ct->c_umask = ~(st.st_mode & 0777);
 399             else
 400                 ct->c_umask = ~m_gmprot();
 401         }
 402     }
 403
 404     /* If reading from a folder, do some updating */
 405     if (mp) {
 406         context_replace (pfolder, folder);/* update current folder  */
 407         seq_setcur (mp, mp->hghsel);      /* update current message */
 408         seq_save (mp);                    /* synchronize sequences  */
 409         context_save ();                  /* save the context file  */
 410     }
 411
 412     /*
 413      * Show the message content
 414      */
 415     show_all_messages (cts);
 416
 417     /* Now free all the structures for the content */
 418     for (ctp = cts; *ctp; ctp++)
 419         free_content (*ctp);
 420
 421     free ((char *) cts);
 422     cts = NULL;
 423
 424     done (0);
 425     return 1;
 426 }
 427
 428
 429 static void
 430 pipeser (int i)
 431 {
 432     if (i == SIGQUIT) {
 433         unlink ("core");
 434         fflush (stdout);
 435         fprintf (stderr, "\n");
 436         fflush (stderr);
 437     }
 438
 439     done (1);
 440     /* NOTREACHED */
 441 }