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 set_endian (void);
 114 void flush_errors (void);
 115
 116 /* mhshowsbr.c */
 117 void show_all_messages (CT *);
 118
 119 /* mhfree.c */
 120 void free_content (CT);
 121 extern CT *cts;
 122 void freects_done (int) NORETURN;
 123
 124 /*
 125  * static prototypes
 126  */
 127 static RETSIGTYPE pipeser (int);
 128
 129
 130 int
 131 main (int argc, char **argv)
 132 {
 133     int msgnum, *icachesw;
 134     char *cp, *file = NULL, *folder = NULL;
 135     char *maildir, buf[100], **argp;
 136     char **arguments;
 137     struct msgs_array msgs = { 0, 0, NULL };
 138     struct msgs *mp = NULL;
 139     CT ct, *ctp;
 140     FILE *fp;
 141
 142     done=freects_done;
 143
 144 #ifdef LOCALE
 145     setlocale(LC_ALL, "");
 146 #endif
 147     invo_name = r1bindex (argv[0], '/');
 148
 149     /* read user profile/context */
 150     context_read();
 151
 152     arguments = getarguments (invo_name, argc, argv, 1);
 153     argp = arguments;
 154
 155     /*
 156      * Parse arguments
 157      */
 158     while ((cp = *argp++)) {
 159         if (*cp == '-') {
 160             switch (smatch (++cp, switches)) {
 161             case AMBIGSW:
 162                 ambigsw (cp, switches);
 163                 done (1);
 164             case UNKWNSW:
 165                 adios (NULL, "-%s unknown", cp);
 166
 167             case HELPSW:
 168                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 169                         invo_name);
 170                 print_help (buf, switches, 1);
 171                 done (1);
 172             case VERSIONSW:
 173                 print_version(invo_name);
 174                 done (1);
 175
 176             case RCACHESW:
 177                 icachesw = &rcachesw;
 178                 goto do_cache;
 179             case WCACHESW:
 180                 icachesw = &wcachesw;
 181 do_cache:
 182                 if (!(cp = *argp++) || *cp == '-')
 183                     adios (NULL, "missing argument to %s", argp[-2]);
 184                 switch (*icachesw = smatch (cp, caches)) {
 185                 case AMBIGSW:
 186                     ambigsw (cp, caches);
 187                     done (1);
 188                 case UNKWNSW:
 189                     adios (NULL, "%s unknown", cp);
 190                 default:
 191                     break;
 192                 }
 193                 continue;
 194
 195             case CHECKSW:
 196                 checksw++;
 197                 continue;
 198             case NCHECKSW:
 199                 checksw = 0;
 200                 continue;
 201
 202             case PAUSESW:
 203                 pausesw = 1;
 204                 continue;
 205             case NPAUSESW:
 206                 pausesw = 0;
 207                 continue;
 208
 209             case SERIALSW:
 210                 serialsw = 1;
 211                 continue;
 212             case NSERIALSW:
 213                 serialsw = 0;
 214                 continue;
 215
 216             case PARTSW:
 217                 if (!(cp = *argp++) || *cp == '-')
 218                     adios (NULL, "missing argument to %s", argp[-2]);
 219                 if (npart >= NPARTS)
 220                     adios (NULL, "too many parts (starting with %s), %d max",
 221                            cp, NPARTS);
 222                 parts[npart++] = cp;
 223                 continue;
 224
 225             case TYPESW:
 226                 if (!(cp = *argp++) || *cp == '-')
 227                     adios (NULL, "missing argument to %s", argp[-2]);
 228                 if (ntype >= NTYPES)
 229                     adios (NULL, "too many types (starting with %s), %d max",
 230                            cp, NTYPES);
 231                 types[ntype++] = cp;
 232                 continue;
 233
 234             case FILESW:
 235                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 236                     adios (NULL, "missing argument to %s", argp[-2]);
 237                 file = *cp == '-' ? cp : path (cp, TFILE);
 238                 continue;
 239
 240             case FORMSW:
 241                 if (!(cp = *argp++) || *cp == '-')
 242                     adios (NULL, "missing argument to %s", argp[-2]);
 243                 if (formsw)
 244                     free (formsw);
 245                 formsw = getcpy (etcpath (cp));
 246                 continue;
 247
 248             /*
 249              * Switches for moreproc/mhlproc
 250              */
 251             case PROGSW:
 252                 if (!(progsw = *argp++) || *progsw == '-')
 253                     adios (NULL, "missing argument to %s", argp[-2]);
 254                 continue;
 255             case NPROGSW:
 256                 nomore++;
 257                 continue;
 258
 259             case LENSW:
 260             case WIDTHSW:
 261                 if (!(cp = *argp++) || *cp == '-')
 262                     adios (NULL, "missing argument to %s", argp[-2]);
 263                 continue;
 264
 265             case VERBSW:
 266                 verbosw = 1;
 267                 continue;
 268             case NVERBSW:
 269                 verbosw = 0;
 270                 continue;
 271             case DEBUGSW:
 272                 debugsw = 1;
 273                 continue;
 274             }
 275         }
 276         if (*cp == '+' || *cp == '@') {
 277             if (folder)
 278                 adios (NULL, "only one folder at a time!");
 279             else
 280                 folder = pluspath (cp);
 281         } else
 282                 app_msgarg(&msgs, cp);
 283     }
 284
 285     /* null terminate the list of acceptable parts/types */
 286     parts[npart] = NULL;
 287     types[ntype] = NULL;
 288
 289     set_endian ();
 290
 291     if ((cp = getenv ("MM_NOASK")) && !strcmp (cp, "1")) {
 292         nolist  = 1;
 293         pausesw = 0;
 294     }
 295
 296     /*
 297      * Check if we've specified an additional profile
 298      */
 299     if ((cp = getenv ("MHSHOW"))) {
 300         if ((fp = fopen (cp, "r"))) {
 301             readconfig ((struct node **) 0, fp, cp, 0);
 302             fclose (fp);
 303         } else {
 304             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 305         }
 306     }
 307
 308     /*
 309      * Read the standard profile setup
 310      */
 311     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 312         readconfig ((struct node **) 0, fp, cp, 0);
 313         fclose (fp);
 314     }
 315
 316     /* Check for public cache location */
 317     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 318         cache_public = NULL;
 319
 320     /* Check for private cache location */
 321     if (!(cache_private = context_find (nmhprivcache)))
 322         cache_private = ".cache";
 323     cache_private = getcpy (m_maildir (cache_private));
 324
 325     /*
 326      * Check for storage directory.  If specified,
 327      * then store temporary files there.  Else we
 328      * store them in standard nmh directory.
 329      */
 330     if ((cp = context_find (nmhstorage)) && *cp)
 331         tmp = concat (cp, "/", invo_name, NULL);
 332     else
 333         tmp = add (m_maildir (invo_name), NULL);
 334
 335     if (!context_find ("path"))
 336         free (path ("./", TFOLDER));
 337
 338     if (file && msgs.size)
 339         adios (NULL, "cannot specify msg and file at same time!");
 340
 341     /*
 342      * check if message is coming from file
 343      */
 344     if (file) {
 345         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 346             adios (NULL, "out of memory");
 347         ctp = cts;
 348
 349         if ((ct = parse_mime (file)));
 350             *ctp++ = ct;
 351     } else {
 352         /*
 353          * message(s) are coming from a folder
 354          */
 355         if (!msgs.size)
 356             app_msgarg(&msgs, "cur");
 357         if (!folder)
 358             folder = getfolder (1);
 359         maildir = m_maildir (folder);
 360
 361         if (chdir (maildir) == NOTOK)
 362             adios (maildir, "unable to change directory to");
 363
 364         /* read folder and create message structure */
 365         if (!(mp = folder_read (folder)))
 366             adios (NULL, "unable to read folder %s", folder);
 367
 368         /* check for empty folder */
 369         if (mp->nummsg == 0)
 370             adios (NULL, "no messages in %s", folder);
 371
 372         /* parse all the message ranges/sequences and set SELECTED */
 373         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 374             if (!m_convert (mp, msgs.msgs[msgnum]))
 375                 done (1);
 376
 377         /*
 378          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 379          * since we will use that as a tag to know which messages
 380          * to remove from the "unseen" sequence.
 381          */
 382         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 383             if (is_selected(mp, msgnum))
 384                 set_unseen (mp, msgnum);
 385
 386         seq_setprev (mp);       /* set the Previous-Sequence */
 387         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 388
 389         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 390             adios (NULL, "out of memory");
 391         ctp = cts;
 392
 393         /*
 394          * Parse all the SELECTED messages.
 395          */
 396         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 397             if (is_selected(mp, msgnum)) {
 398                 char *msgnam;
 399
 400                 msgnam = m_name (msgnum);
 401                 if ((ct = parse_mime (msgnam)))
 402                     *ctp++ = ct;
 403             }
 404         }
 405     }
 406
 407     if (!*cts)
 408         done (1);
 409
 410     userrs = 1;
 411     SIGNAL (SIGQUIT, quitser);
 412     SIGNAL (SIGPIPE, pipeser);
 413
 414     /*
 415      * Get the associated umask for the relevant contents.
 416      */
 417     for (ctp = cts; *ctp; ctp++) {
 418         struct stat st;
 419
 420         ct = *ctp;
 421         if (type_ok (ct, 1) && !ct->c_umask) {
 422             if (stat (ct->c_file, &st) != NOTOK)
 423                 ct->c_umask = ~(st.st_mode & 0777);
 424             else
 425                 ct->c_umask = ~m_gmprot();
 426         }
 427     }
 428
 429     /*
 430      * Show the message content
 431      */
 432     show_all_messages (cts);
 433
 434     /* Now free all the structures for the content */
 435     for (ctp = cts; *ctp; ctp++)
 436         free_content (*ctp);
 437
 438     free ((char *) cts);
 439     cts = NULL;
 440
 441     /* If reading from a folder, do some updating */
 442     if (mp) {
 443         context_replace (pfolder, folder);/* update current folder  */
 444         seq_setcur (mp, mp->hghsel);      /* update current message */
 445         seq_save (mp);                    /* synchronize sequences  */
 446         context_save ();                  /* save the context file  */
 447     }
 448
 449     done (0);
 450     return 1;
 451 }
 452
 453
 454 static RETSIGTYPE
 455 pipeser (int i)
 456 {
 457     if (i == SIGQUIT) {
 458         unlink ("core");
 459         fflush (stdout);
 460         fprintf (stderr, "\n");
 461         fflush (stderr);
 462     }
 463
 464     done (1);
 465     /* NOTREACHED */
 466 }