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

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