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