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