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