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