diplodocus.org Git - nmh/blob - uip/mhshow.c

   1
   2 /*
   3  * mhshow.c -- display the contents of MIME messages
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13 #include <fcntl.h>
  14 #include <h/signals.h>
  15 #include <h/md5.h>
  16 #include <errno.h>
  17 #include <signal.h>
  18 #include <h/mts.h>
  19 #include <h/tws.h>
  20 #include <h/mime.h>
  21 #include <h/mhparse.h>
  22 #include <h/mhcachesbr.h>
  23 #include <h/utils.h>
  24
  25 #ifdef HAVE_SYS_WAIT_H
  26 # include <sys/wait.h>
  27 #endif
  28
  29 static struct swit switches[] = {
  30 #define CHECKSW                 0
  31     { "check", 0 },
  32 #define NCHECKSW                1
  33     { "nocheck", 0 },
  34 #define PAUSESW                 2
  35     { "pause", 0 },
  36 #define NPAUSESW                3
  37     { "nopause", 0 },
  38 #define SERIALSW                4
  39     { "serialonly", 0 },
  40 #define NSERIALSW               5
  41     { "noserialonly", 0 },
  42 #define VERBSW                  6
  43     { "verbose", 0 },
  44 #define NVERBSW                 7
  45     { "noverbose", 0 },
  46 #define FILESW                  8       /* interface from show */
  47     { "file file", 0 },
  48 #define FORMSW                  9
  49     { "form formfile", 0 },
  50 #define PARTSW                 10
  51     { "part number", 0 },
  52 #define TYPESW                 11
  53     { "type content", 0 },
  54 #define RCACHESW               12
  55     { "rcache policy", 0 },
  56 #define WCACHESW               13
  57     { "wcache policy", 0 },
  58 #define VERSIONSW              14
  59     { "version", 0 },
  60 #define HELPSW                 15
  61     { "help", 0 },
  62
  63 /*
  64  * switches for moreproc/mhlproc
  65  */
  66 #define PROGSW                 16
  67     { "moreproc program", -4 },
  68 #define NPROGSW                17
  69     { "nomoreproc", -3 },
  70 #define LENSW                  18
  71     { "length lines", -4 },
  72 #define WIDTHSW                19
  73     { "width columns", -4 },
  74
  75 /*
  76  * switches for debugging
  77  */
  78 #define DEBUGSW                20
  79     { "debug", -5 },
  80     { NULL, 0 }
  81 };
  82
  83
  84 /* mhparse.c */
  85 extern int checksw;
  86 extern char *tmp;       /* directory to place temp files */
  87
  88 /* mhcachesbr.c */
  89 extern int rcachesw;
  90 extern int wcachesw;
  91 extern char *cache_public;
  92 extern char *cache_private;
  93
  94 /* mhshowsbr.c */
  95 extern int pausesw;
  96 extern int serialsw;
  97 extern char *progsw;
  98 extern int nolist;
  99 extern int nomore;      /* flags for moreproc/header display */
 100 extern char *formsw;
 101
 102 /* mhmisc.c */
 103 extern int npart;
 104 extern int ntype;
 105 extern char *parts[NPARTS + 1];
 106 extern char *types[NTYPES + 1];
 107 extern int userrs;
 108
 109 int debugsw = 0;
 110 int verbosw = 0;
 111
 112 #define quitser pipeser
 113
 114 /* mhparse.c */
 115 CT parse_mime (char *);
 116
 117 /* mhmisc.c */
 118 int part_ok (CT, int);
 119 int type_ok (CT, int);
 120 void set_endian (void);
 121 void flush_errors (void);
 122
 123 /* mhshowsbr.c */
 124 void show_all_messages (CT *);
 125
 126 /* mhfree.c */
 127 void free_content (CT);
 128 extern CT *cts;
 129 void freects_done (int);
 130
 131 /*
 132  * static prototypes
 133  */
 134 static RETSIGTYPE pipeser (int);
 135
 136
 137 int
 138 main (int argc, char **argv)
 139 {
 140     int msgnum, *icachesw;
 141     char *cp, *file = NULL, *folder = NULL;
 142     char *maildir, buf[100], **argp;
 143     char **arguments;
 144     struct msgs_array msgs = { 0, 0, NULL };
 145     struct msgs *mp = NULL;
 146     CT ct, *ctp;
 147     FILE *fp;
 148
 149     done=freects_done;
 150
 151 #ifdef LOCALE
 152     setlocale(LC_ALL, "");
 153 #endif
 154     invo_name = r1bindex (argv[0], '/');
 155
 156     /* read user profile/context */
 157     context_read();
 158
 159     arguments = getarguments (invo_name, argc, argv, 1);
 160     argp = arguments;
 161
 162     /*
 163      * Parse arguments
 164      */
 165     while ((cp = *argp++)) {
 166         if (*cp == '-') {
 167             switch (smatch (++cp, switches)) {
 168             case AMBIGSW:
 169                 ambigsw (cp, switches);
 170                 done (1);
 171             case UNKWNSW:
 172                 adios (NULL, "-%s unknown", cp);
 173
 174             case HELPSW:
 175                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 176                         invo_name);
 177                 print_help (buf, switches, 1);
 178                 done (1);
 179             case VERSIONSW:
 180                 print_version(invo_name);
 181                 done (1);
 182
 183             case RCACHESW:
 184                 icachesw = &rcachesw;
 185                 goto do_cache;
 186             case WCACHESW:
 187                 icachesw = &wcachesw;
 188 do_cache:
 189                 if (!(cp = *argp++) || *cp == '-')
 190                     adios (NULL, "missing argument to %s", argp[-2]);
 191                 switch (*icachesw = smatch (cp, caches)) {
 192                 case AMBIGSW:
 193                     ambigsw (cp, caches);
 194                     done (1);
 195                 case UNKWNSW:
 196                     adios (NULL, "%s unknown", cp);
 197                 default:
 198                     break;
 199                 }
 200                 continue;
 201
 202             case CHECKSW:
 203                 checksw++;
 204                 continue;
 205             case NCHECKSW:
 206                 checksw = 0;
 207                 continue;
 208
 209             case PAUSESW:
 210                 pausesw = 1;
 211                 continue;
 212             case NPAUSESW:
 213                 pausesw = 0;
 214                 continue;
 215
 216             case SERIALSW:
 217                 serialsw = 1;
 218                 continue;
 219             case NSERIALSW:
 220                 serialsw = 0;
 221                 continue;
 222
 223             case PARTSW:
 224                 if (!(cp = *argp++) || *cp == '-')
 225                     adios (NULL, "missing argument to %s", argp[-2]);
 226                 if (npart >= NPARTS)
 227                     adios (NULL, "too many parts (starting with %s), %d max",
 228                            cp, NPARTS);
 229                 parts[npart++] = cp;
 230                 continue;
 231
 232             case TYPESW:
 233                 if (!(cp = *argp++) || *cp == '-')
 234                     adios (NULL, "missing argument to %s", argp[-2]);
 235                 if (ntype >= NTYPES)
 236                     adios (NULL, "too many types (starting with %s), %d max",
 237                            cp, NTYPES);
 238                 types[ntype++] = cp;
 239                 continue;
 240
 241             case FILESW:
 242                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 243                     adios (NULL, "missing argument to %s", argp[-2]);
 244                 file = *cp == '-' ? cp : path (cp, TFILE);
 245                 continue;
 246
 247             case FORMSW:
 248                 if (!(cp = *argp++) || *cp == '-')
 249                     adios (NULL, "missing argument to %s", argp[-2]);
 250                 if (formsw)
 251                     free (formsw);
 252                 formsw = getcpy (etcpath (cp));
 253                 continue;
 254
 255             /*
 256              * Switches for moreproc/mhlproc
 257              */
 258             case PROGSW:
 259                 if (!(progsw = *argp++) || *progsw == '-')
 260                     adios (NULL, "missing argument to %s", argp[-2]);
 261                 continue;
 262             case NPROGSW:
 263                 nomore++;
 264                 continue;
 265
 266             case LENSW:
 267             case WIDTHSW:
 268                 if (!(cp = *argp++) || *cp == '-')
 269                     adios (NULL, "missing argument to %s", argp[-2]);
 270                 continue;
 271
 272             case VERBSW:
 273                 verbosw = 1;
 274                 continue;
 275             case NVERBSW:
 276                 verbosw = 0;
 277                 continue;
 278             case DEBUGSW:
 279                 debugsw = 1;
 280                 continue;
 281             }
 282         }
 283         if (*cp == '+' || *cp == '@') {
 284             if (folder)
 285                 adios (NULL, "only one folder at a time!");
 286             else
 287                 folder = pluspath (cp);
 288         } else
 289                 app_msgarg(&msgs, cp);
 290     }
 291
 292     /* null terminate the list of acceptable parts/types */
 293     parts[npart] = NULL;
 294     types[ntype] = NULL;
 295
 296     set_endian ();
 297
 298     if ((cp = getenv ("MM_NOASK")) && !strcmp (cp, "1")) {
 299         nolist  = 1;
 300         pausesw = 0;
 301     }
 302
 303     /*
 304      * Check if we've specified an additional profile
 305      */
 306     if ((cp = getenv ("MHSHOW"))) {
 307         if ((fp = fopen (cp, "r"))) {
 308             readconfig ((struct node **) 0, fp, cp, 0);
 309             fclose (fp);
 310         } else {
 311             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 312         }
 313     }
 314
 315     /*
 316      * Read the standard profile setup
 317      */
 318     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 319         readconfig ((struct node **) 0, fp, cp, 0);
 320         fclose (fp);
 321     }
 322
 323     /* Check for public cache location */
 324     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 325         cache_public = NULL;
 326
 327     /* Check for private cache location */
 328     if (!(cache_private = context_find (nmhprivcache)))
 329         cache_private = ".cache";
 330     cache_private = getcpy (m_maildir (cache_private));
 331
 332     /*
 333      * Check for storage directory.  If specified,
 334      * then store temporary files there.  Else we
 335      * store them in standard nmh directory.
 336      */
 337     if ((cp = context_find (nmhstorage)) && *cp)
 338         tmp = concat (cp, "/", invo_name, NULL);
 339     else
 340         tmp = add (m_maildir (invo_name), NULL);
 341
 342     if (!context_find ("path"))
 343         free (path ("./", TFOLDER));
 344
 345     if (file && msgs.size)
 346         adios (NULL, "cannot specify msg and file at same time!");
 347
 348     /*
 349      * check if message is coming from file
 350      */
 351     if (file) {
 352         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 353             adios (NULL, "out of memory");
 354         ctp = cts;
 355
 356         if ((ct = parse_mime (file)));
 357             *ctp++ = ct;
 358     } else {
 359         /*
 360          * message(s) are coming from a folder
 361          */
 362         if (!msgs.size)
 363             app_msgarg(&msgs, "cur");
 364         if (!folder)
 365             folder = getfolder (1);
 366         maildir = m_maildir (folder);
 367
 368         if (chdir (maildir) == NOTOK)
 369             adios (maildir, "unable to change directory to");
 370
 371         /* read folder and create message structure */
 372         if (!(mp = folder_read (folder)))
 373             adios (NULL, "unable to read folder %s", folder);
 374
 375         /* check for empty folder */
 376         if (mp->nummsg == 0)
 377             adios (NULL, "no messages in %s", folder);
 378
 379         /* parse all the message ranges/sequences and set SELECTED */
 380         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 381             if (!m_convert (mp, msgs.msgs[msgnum]))
 382                 done (1);
 383
 384         /*
 385          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 386          * since we will use that as a tag to know which messages
 387          * to remove from the "unseen" sequence.
 388          */
 389         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 390             if (is_selected(mp, msgnum))
 391                 set_unseen (mp, msgnum);
 392
 393         seq_setprev (mp);       /* set the Previous-Sequence */
 394         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 395
 396         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 397             adios (NULL, "out of memory");
 398         ctp = cts;
 399
 400         /*
 401          * Parse all the SELECTED messages.
 402          */
 403         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 404             if (is_selected(mp, msgnum)) {
 405                 char *msgnam;
 406
 407                 msgnam = m_name (msgnum);
 408                 if ((ct = parse_mime (msgnam)))
 409                     *ctp++ = ct;
 410             }
 411         }
 412     }
 413
 414     if (!*cts)
 415         done (1);
 416
 417     userrs = 1;
 418     SIGNAL (SIGQUIT, quitser);
 419     SIGNAL (SIGPIPE, pipeser);
 420
 421     /*
 422      * Get the associated umask for the relevant contents.
 423      */
 424     for (ctp = cts; *ctp; ctp++) {
 425         struct stat st;
 426
 427         ct = *ctp;
 428         if (type_ok (ct, 1) && !ct->c_umask) {
 429             if (stat (ct->c_file, &st) != NOTOK)
 430                 ct->c_umask = ~(st.st_mode & 0777);
 431             else
 432                 ct->c_umask = ~m_gmprot();
 433         }
 434     }
 435
 436     /*
 437      * Show the message content
 438      */
 439     show_all_messages (cts);
 440
 441     /* Now free all the structures for the content */
 442     for (ctp = cts; *ctp; ctp++)
 443         free_content (*ctp);
 444
 445     free ((char *) cts);
 446     cts = NULL;
 447
 448     /* If reading from a folder, do some updating */
 449     if (mp) {
 450         context_replace (pfolder, folder);/* update current folder  */
 451         seq_setcur (mp, mp->hghsel);      /* update current message */
 452         seq_save (mp);                    /* synchronize sequences  */
 453         context_save ();                  /* save the context file  */
 454     }
 455
 456     done (0);
 457     return 1;
 458 }
 459
 460
 461 static RETSIGTYPE
 462 pipeser (int i)
 463 {
 464     if (i == SIGQUIT) {
 465         unlink ("core");
 466         fflush (stdout);
 467         fprintf (stderr, "\n");
 468         fflush (stderr);
 469     }
 470
 471     done (1);
 472     /* NOTREACHED */
 473 }