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 static struct swit switches[] = {
  24 #define CHECKSW                 0
  25     { "check", 0 },
  26 #define NCHECKSW                1
  27     { "nocheck", 0 },
  28 #define PAUSESW                 2
  29     { "pause", 0 },
  30 #define NPAUSESW                3
  31     { "nopause", 0 },
  32 #define SERIALSW                4
  33     { "serialonly", 0 },
  34 #define NSERIALSW               5
  35     { "noserialonly", 0 },
  36 #define VERBSW                  6
  37     { "verbose", 0 },
  38 #define NVERBSW                 7
  39     { "noverbose", 0 },
  40 #define FILESW                  8       /* interface from show */
  41     { "file file", 0 },
  42 #define FORMSW                  9
  43     { "form formfile", 0 },
  44 #define PARTSW                 10
  45     { "part number", 0 },
  46 #define TYPESW                 11
  47     { "type content", 0 },
  48 #define RCACHESW               12
  49     { "rcache policy", 0 },
  50 #define WCACHESW               13
  51     { "wcache policy", 0 },
  52 #define VERSIONSW              14
  53     { "version", 0 },
  54 #define HELPSW                 15
  55     { "help", 0 },
  56
  57 /*
  58  * switches for moreproc/mhlproc
  59  */
  60 #define PROGSW                 16
  61     { "moreproc program", -4 },
  62 #define NPROGSW                17
  63     { "nomoreproc", -3 },
  64 #define LENSW                  18
  65     { "length lines", -4 },
  66 #define WIDTHSW                19
  67     { "width columns", -4 },
  68
  69 /*
  70  * switches for debugging
  71  */
  72 #define DEBUGSW                20
  73     { "debug", -5 },
  74     { NULL, 0 }
  75 };
  76
  77
  78 /* mhparse.c */
  79 extern char *tmp;       /* directory to place temp files */
  80
  81 /* mhcachesbr.c */
  82 extern int rcachesw;
  83 extern int wcachesw;
  84 extern char *cache_public;
  85 extern char *cache_private;
  86
  87 /* mhshowsbr.c */
  88 extern int pausesw;
  89 extern int serialsw;
  90 extern char *progsw;
  91 extern int nolist;
  92 extern int nomore;      /* flags for moreproc/header display */
  93 extern char *formsw;
  94
  95 /* mhmisc.c */
  96 extern int npart;
  97 extern int ntype;
  98 extern char *parts[NPARTS + 1];
  99 extern char *types[NTYPES + 1];
 100 extern int userrs;
 101
 102 int debugsw = 0;
 103 int verbosw = 0;
 104
 105 #define quitser pipeser
 106
 107 /* mhparse.c */
 108 CT parse_mime (char *);
 109
 110 /* mhmisc.c */
 111 int part_ok (CT, int);
 112 int type_ok (CT, int);
 113 void flush_errors (void);
 114
 115 /* mhshowsbr.c */
 116 void show_all_messages (CT *);
 117
 118 /* mhfree.c */
 119 void free_content (CT);
 120 extern CT *cts;
 121 void freects_done (int) NORETURN;
 122
 123 /*
 124  * static prototypes
 125  */
 126 static void pipeser (int);
 127
 128
 129 int
 130 main (int argc, char **argv)
 131 {
 132     int msgnum, *icachesw;
 133     char *cp, *file = NULL, *folder = NULL;
 134     char *maildir, buf[100], **argp;
 135     char **arguments;
 136     struct msgs_array msgs = { 0, 0, NULL };
 137     struct msgs *mp = NULL;
 138     CT ct, *ctp;
 139     FILE *fp;
 140
 141     done=freects_done;
 142
 143 #ifdef LOCALE
 144     setlocale(LC_ALL, "");
 145 #endif
 146     invo_name = r1bindex (argv[0], '/');
 147
 148     /* read user profile/context */
 149     context_read();
 150
 151     arguments = getarguments (invo_name, argc, argv, 1);
 152     argp = arguments;
 153
 154     /*
 155      * Parse arguments
 156      */
 157     while ((cp = *argp++)) {
 158         if (*cp == '-') {
 159             switch (smatch (++cp, switches)) {
 160             case AMBIGSW:
 161                 ambigsw (cp, switches);
 162                 done (1);
 163             case UNKWNSW:
 164                 adios (NULL, "-%s unknown", cp);
 165
 166             case HELPSW:
 167                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 168                         invo_name);
 169                 print_help (buf, switches, 1);
 170                 done (1);
 171             case VERSIONSW:
 172                 print_version(invo_name);
 173                 done (1);
 174
 175             case RCACHESW:
 176                 icachesw = &rcachesw;
 177                 goto do_cache;
 178             case WCACHESW:
 179                 icachesw = &wcachesw;
 180 do_cache:
 181                 if (!(cp = *argp++) || *cp == '-')
 182                     adios (NULL, "missing argument to %s", argp[-2]);
 183                 switch (*icachesw = smatch (cp, caches)) {
 184                 case AMBIGSW:
 185                     ambigsw (cp, caches);
 186                     done (1);
 187                 case UNKWNSW:
 188                     adios (NULL, "%s unknown", cp);
 189                 default:
 190                     break;
 191                 }
 192                 continue;
 193
 194             case CHECKSW:
 195                 checksw++;
 196                 continue;
 197             case NCHECKSW:
 198                 checksw = 0;
 199                 continue;
 200
 201             case PAUSESW:
 202                 pausesw = 1;
 203                 continue;
 204             case NPAUSESW:
 205                 pausesw = 0;
 206                 continue;
 207
 208             case SERIALSW:
 209                 serialsw = 1;
 210                 continue;
 211             case NSERIALSW:
 212                 serialsw = 0;
 213                 continue;
 214
 215             case PARTSW:
 216                 if (!(cp = *argp++) || *cp == '-')
 217                     adios (NULL, "missing argument to %s", argp[-2]);
 218                 if (npart >= NPARTS)
 219                     adios (NULL, "too many parts (starting with %s), %d max",
 220                            cp, NPARTS);
 221                 parts[npart++] = cp;
 222                 continue;
 223
 224             case TYPESW:
 225                 if (!(cp = *argp++) || *cp == '-')
 226                     adios (NULL, "missing argument to %s", argp[-2]);
 227                 if (ntype >= NTYPES)
 228                     adios (NULL, "too many types (starting with %s), %d max",
 229                            cp, NTYPES);
 230                 types[ntype++] = cp;
 231                 continue;
 232
 233             case FILESW:
 234                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 235                     adios (NULL, "missing argument to %s", argp[-2]);
 236                 file = *cp == '-' ? cp : path (cp, TFILE);
 237                 continue;
 238
 239             case FORMSW:
 240                 if (!(cp = *argp++) || *cp == '-')
 241                     adios (NULL, "missing argument to %s", argp[-2]);
 242                 if (formsw)
 243                     free (formsw);
 244                 formsw = getcpy (etcpath (cp));
 245                 continue;
 246
 247             /*
 248              * Switches for moreproc/mhlproc
 249              */
 250             case PROGSW:
 251                 if (!(progsw = *argp++) || *progsw == '-')
 252                     adios (NULL, "missing argument to %s", argp[-2]);
 253                 continue;
 254             case NPROGSW:
 255                 nomore++;
 256                 continue;
 257
 258             case LENSW:
 259             case WIDTHSW:
 260                 if (!(cp = *argp++) || *cp == '-')
 261                     adios (NULL, "missing argument to %s", argp[-2]);
 262                 continue;
 263
 264             case VERBSW:
 265                 verbosw = 1;
 266                 continue;
 267             case NVERBSW:
 268                 verbosw = 0;
 269                 continue;
 270             case DEBUGSW:
 271                 debugsw = 1;
 272                 continue;
 273             }
 274         }
 275         if (*cp == '+' || *cp == '@') {
 276             if (folder)
 277                 adios (NULL, "only one folder at a time!");
 278             else
 279                 folder = pluspath (cp);
 280         } else
 281                 app_msgarg(&msgs, cp);
 282     }
 283
 284     /* null terminate the list of acceptable parts/types */
 285     parts[npart] = NULL;
 286     types[ntype] = NULL;
 287
 288     set_endian ();
 289
 290     if ((cp = getenv ("MM_NOASK")) && !strcmp (cp, "1")) {
 291         nolist  = 1;
 292         pausesw = 0;
 293     }
 294
 295     /*
 296      * Check if we've specified an additional profile
 297      */
 298     if ((cp = getenv ("MHSHOW"))) {
 299         if ((fp = fopen (cp, "r"))) {
 300             readconfig ((struct node **) 0, fp, cp, 0);
 301             fclose (fp);
 302         } else {
 303             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 304         }
 305     }
 306
 307     /*
 308      * Read the standard profile setup
 309      */
 310     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 311         readconfig ((struct node **) 0, fp, cp, 0);
 312         fclose (fp);
 313     }
 314
 315     /* Check for public cache location */
 316     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 317         cache_public = NULL;
 318
 319     /* Check for private cache location */
 320     if (!(cache_private = context_find (nmhprivcache)))
 321         cache_private = ".cache";
 322     cache_private = getcpy (m_maildir (cache_private));
 323
 324     /*
 325      * Check for storage directory.  If specified,
 326      * then store temporary files there.  Else we
 327      * store them in standard nmh directory.
 328      */
 329     if ((cp = context_find (nmhstorage)) && *cp)
 330         tmp = concat (cp, "/", invo_name, NULL);
 331     else
 332         tmp = add (m_maildir (invo_name), NULL);
 333
 334     if (!context_find ("path"))
 335         free (path ("./", TFOLDER));
 336
 337     if (file && msgs.size)
 338         adios (NULL, "cannot specify msg and file at same time!");
 339
 340     /*
 341      * check if message is coming from file
 342      */
 343     if (file) {
 344         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 345             adios (NULL, "out of memory");
 346         ctp = cts;
 347
 348         if ((ct = parse_mime (file)))
 349             *ctp++ = ct;
 350     } else {
 351         /*
 352          * message(s) are coming from a folder
 353          */
 354         if (!msgs.size)
 355             app_msgarg(&msgs, "cur");
 356         if (!folder)
 357             folder = getfolder (1);
 358         maildir = m_maildir (folder);
 359
 360         if (chdir (maildir) == NOTOK)
 361             adios (maildir, "unable to change directory to");
 362
 363         /* read folder and create message structure */
 364         if (!(mp = folder_read (folder)))
 365             adios (NULL, "unable to read folder %s", folder);
 366
 367         /* check for empty folder */
 368         if (mp->nummsg == 0)
 369             adios (NULL, "no messages in %s", folder);
 370
 371         /* parse all the message ranges/sequences and set SELECTED */
 372         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 373             if (!m_convert (mp, msgs.msgs[msgnum]))
 374                 done (1);
 375
 376         /*
 377          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 378          * since we will use that as a tag to know which messages
 379          * to remove from the "unseen" sequence.
 380          */
 381         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 382             if (is_selected(mp, msgnum))
 383                 set_unseen (mp, msgnum);
 384
 385         seq_setprev (mp);       /* set the Previous-Sequence */
 386         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 387
 388         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 389             adios (NULL, "out of memory");
 390         ctp = cts;
 391
 392         /*
 393          * Parse all the SELECTED messages.
 394          */
 395         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 396             if (is_selected(mp, msgnum)) {
 397                 char *msgnam;
 398
 399                 msgnam = m_name (msgnum);
 400                 if ((ct = parse_mime (msgnam)))
 401                     *ctp++ = ct;
 402             }
 403         }
 404     }
 405
 406     if (!*cts)
 407         done (1);
 408
 409     userrs = 1;
 410     SIGNAL (SIGQUIT, quitser);
 411     SIGNAL (SIGPIPE, pipeser);
 412
 413     /*
 414      * Get the associated umask for the relevant contents.
 415      */
 416     for (ctp = cts; *ctp; ctp++) {
 417         struct stat st;
 418
 419         ct = *ctp;
 420         if (type_ok (ct, 1) && !ct->c_umask) {
 421             if (stat (ct->c_file, &st) != NOTOK)
 422                 ct->c_umask = ~(st.st_mode & 0777);
 423             else
 424                 ct->c_umask = ~m_gmprot();
 425         }
 426     }
 427
 428     /*
 429      * Show the message content
 430      */
 431     show_all_messages (cts);
 432
 433     /* Now free all the structures for the content */
 434     for (ctp = cts; *ctp; ctp++)
 435         free_content (*ctp);
 436
 437     free ((char *) cts);
 438     cts = NULL;
 439
 440     /* If reading from a folder, do some updating */
 441     if (mp) {
 442         context_replace (pfolder, folder);/* update current folder  */
 443         seq_setcur (mp, mp->hghsel);      /* update current message */
 444         seq_save (mp);                    /* synchronize sequences  */
 445         context_save ();                  /* save the context file  */
 446     }
 447
 448     done (0);
 449     return 1;
 450 }
 451
 452
 453 static void
 454 pipeser (int i)
 455 {
 456     if (i == SIGQUIT) {
 457         unlink ("core");
 458         fflush (stdout);
 459         fprintf (stderr, "\n");
 460         fflush (stderr);
 461     }
 462
 463     done (1);
 464     /* NOTREACHED */
 465 }