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 "sbr/path.h"
  10 #include "sbr/print_version.h"
  11 #include "sbr/print_help.h"
  12 #include "sbr/error.h"
  13 #include <fcntl.h>
  14 #include "h/signals.h"
  15 #include "h/md5.h"
  16 #include "h/mts.h"
  17 #include "h/tws.h"
  18 #include "h/fmt_scan.h"
  19 #include "h/mime.h"
  20 #include "h/mhparse.h"
  21 #include "h/mhcachesbr.h"
  22 #include "h/done.h"
  23 #include "h/utils.h"
  24 #include "mhmisc.h"
  25 #include "sbr/m_maildir.h"
  26 #include "sbr/m_popen.h"
  27 #include "mhfree.h"
  28 #include "mhshowsbr.h"
  29
  30 #define MHSHOW_SWITCHES \
  31     X("check", 0, CHECKSW) \
  32     X("nocheck", 0, NCHECKSW) \
  33     X("verbose", 0, VERBSW) \
  34     X("noverbose", 0, NVERBSW) \
  35     X("concat", 0, CONCATSW) \
  36     X("noconcat", 0, NCONCATSW) \
  37     X("textonly", 0, TEXTONLYSW) \
  38     X("notextonly", 0, NTEXTONLYSW) \
  39     X("inlineonly", 0, INLINESW) \
  40     X("noinlineonly", 0, NINLINESW) \
  41     X("file file", 0, FILESW) \
  42     X("form formfile", 0, FORMSW) \
  43     X("header", 0, HEADSW) \
  44     X("noheader", 0, NHEADSW) \
  45     X("headerform formfile", 0, HEADFORMSW) \
  46     X("markform formfile", 0, MARKFORMSW) \
  47     X("part number", 0, PARTSW) \
  48     X("type content", 0, TYPESW) \
  49     X("prefer content", 0, PREFERSW) \
  50     X("noprefer", 0, NPREFERSW) \
  51     X("rcache policy", 0, RCACHESW) \
  52     X("wcache policy", 0, WCACHESW) \
  53     X("version", 0, VERSIONSW) \
  54     X("help", 0, HELPSW) \
  55     /*                                  \
  56      * switches for moreproc/mhlproc    \
  57      */                                 \
  58     X("moreproc program", -4, PROGSW) \
  59     X("nomoreproc", -3, NPROGSW) \
  60     X("length lines", -4, LENSW) \
  61     X("width columns", -4, WIDTHSW) \
  62     /*                          \
  63      * switches for debugging   \
  64      */                         \
  65     X("debug", -5, DEBUGSW) \
  66
  67 #define X(sw, minchars, id) id,
  68 DEFINE_SWITCH_ENUM(MHSHOW);
  69 #undef X
  70
  71 #define X(sw, minchars, id) { sw, minchars, id },
  72 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  73 #undef X
  74
  75
  76 int debugsw = 0;
  77 int verbosw = 0;
  78
  79 #define quitser pipeser
  80
  81 /*
  82  * static prototypes
  83  */
  84 static void pipeser (int);
  85
  86
  87 int
  88 main (int argc, char **argv)
  89 {
  90     int msgnum, *icachesw, concatsw = -1, textonly = -1, inlineonly = -1;
  91     char *cp, *file = NULL;
  92     char *maildir, buf[100], **argp;
  93     char **arguments;
  94     struct msgs_array msgs = { 0, 0, NULL };
  95     struct msgs *mp = NULL;
  96     CT ct, *ctp;
  97     FILE *fp;
  98
  99     if (nmh_init(argv[0], true, true)) { return 1; }
 100
 101     set_done(freects_done);
 102
 103     arguments = getarguments (invo_name, argc, argv, 1);
 104     argp = arguments;
 105
 106     /*
 107      * Parse arguments
 108      */
 109     while ((cp = *argp++)) {
 110         if (*cp == '-') {
 111             switch (smatch (++cp, switches)) {
 112             case AMBIGSW:
 113                 ambigsw (cp, switches);
 114                 done (1);
 115             case UNKWNSW:
 116                 die("-%s unknown", cp);
 117
 118             case HELPSW:
 119                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 120                         invo_name);
 121                 print_help (buf, switches, 1);
 122                 done (0);
 123             case VERSIONSW:
 124                 print_version(invo_name);
 125                 done (0);
 126
 127             case RCACHESW:
 128                 icachesw = &rcachesw;
 129                 goto do_cache;
 130             case WCACHESW:
 131                 icachesw = &wcachesw;
 132 do_cache:
 133                 if (!(cp = *argp++) || *cp == '-')
 134                     die("missing argument to %s", argp[-2]);
 135                 switch (*icachesw = smatch (cp, cache_policy)) {
 136                 case AMBIGSW:
 137                     ambigsw (cp, cache_policy);
 138                     done (1);
 139                 case UNKWNSW:
 140                     die("%s unknown", cp);
 141                 default:
 142                     break;
 143                 }
 144                 continue;
 145
 146             case CHECKSW:
 147                 checksw++;
 148                 continue;
 149             case NCHECKSW:
 150                 checksw = 0;
 151                 continue;
 152
 153             case CONCATSW:
 154                 concatsw = 1;
 155                 continue;
 156             case NCONCATSW:
 157                 concatsw = 0;
 158                 continue;
 159             case TEXTONLYSW:
 160                 textonly = 1;
 161                 continue;
 162             case NTEXTONLYSW:
 163                 textonly = 0;
 164                 continue;
 165             case INLINESW:
 166                 inlineonly = 1;
 167                 continue;
 168             case NINLINESW:
 169                 inlineonly = 0;
 170                 continue;
 171
 172             case PARTSW:
 173                 if (!(cp = *argp++) || *cp == '-')
 174                     die("missing argument to %s", argp[-2]);
 175                 if (npart >= NPARTS)
 176                     die("too many parts (starting with %s), %d max",
 177                            cp, NPARTS);
 178                 parts[npart++] = cp;
 179                 continue;
 180
 181             case TYPESW:
 182                 if (!(cp = *argp++) || *cp == '-')
 183                     die("missing argument to %s", argp[-2]);
 184                 if (ntype >= NTYPES)
 185                     die("too many types (starting with %s), %d max",
 186                            cp, NTYPES);
 187                 types[ntype++] = cp;
 188                 continue;
 189
 190             case PREFERSW:
 191                 if (!(cp = *argp++) || *cp == '-')
 192                     die("missing argument to %s", argp[-2]);
 193                 if (npreferred >= NPREFS)
 194                     die("too many preferred types (starting with %s), %d max",
 195                            cp, NPREFS);
 196                 mime_preference[npreferred].type = cp;
 197                 cp = strchr(cp, '/');
 198                 if (cp) *cp++ = '\0';
 199                 mime_preference[npreferred++].subtype = cp;
 200                 continue;
 201
 202             case NPREFERSW:
 203                 npreferred = 0;
 204                 continue;
 205
 206             case FILESW:
 207                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 208                     die("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                     die("missing argument to %s", argp[-2]);
 215                 free(formsw);
 216                 formsw = mh_xstrdup(etcpath(cp));
 217                 continue;
 218
 219             case HEADSW:
 220                 headersw = 1;
 221                 continue;
 222             case NHEADSW:
 223                 headersw = 0;
 224                 continue;
 225
 226             case HEADFORMSW:
 227                 if (!(headerform = *argp++) || *headerform == '-')
 228                     die("missing argument to %s", argp[-2]);
 229                 continue;
 230
 231             case MARKFORMSW:
 232                 if (!(markerform = *argp++) || *markerform == '-')
 233                     die("missing argument to %s", argp[-2]);
 234                 continue;
 235
 236             /*
 237              * Switches for moreproc/mhlproc
 238              */
 239             case PROGSW:
 240                 if (!(progsw = *argp++) || *progsw == '-')
 241                     die("missing argument to %s", argp[-2]);
 242                 continue;
 243             case NPROGSW:
 244                 nomore++;
 245                 continue;
 246
 247             case LENSW:
 248             case WIDTHSW:
 249                 if (!(cp = *argp++) || *cp == '-')
 250                     die("missing argument to %s", argp[-2]);
 251                 continue;
 252
 253             case VERBSW:
 254                 verbosw = 1;
 255                 continue;
 256             case NVERBSW:
 257                 verbosw = 0;
 258                 continue;
 259             case DEBUGSW:
 260                 debugsw = 1;
 261                 continue;
 262             }
 263         }
 264         if (*cp == '+' || *cp == '@') {
 265             if (folder)
 266                 die("only one folder at a time!");
 267             folder = pluspath (cp);
 268         } else
 269                 app_msgarg(&msgs, cp);
 270     }
 271
 272     /* null terminate the list of acceptable parts/types */
 273     parts[npart] = NULL;
 274     types[ntype] = NULL;
 275
 276     /*
 277      * If we had any specific parts or types specified, turn off text only
 278      * content.
 279      */
 280
 281     if (npart > 0 || ntype > 0) {
 282         if (textonly == -1)
 283             textonly = 0;
 284         if (inlineonly == -1)
 285             inlineonly = 0;
 286     }
 287
 288     /*
 289      * Check if we've specified an additional profile
 290      */
 291     if ((cp = getenv ("MHSHOW"))) {
 292         if ((fp = fopen (cp, "r"))) {
 293             readconfig(NULL, fp, cp, 0);
 294             fclose (fp);
 295         } else {
 296             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 297         }
 298     }
 299
 300     /*
 301      * Read the standard profile setup
 302      */
 303     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 304         readconfig(NULL, fp, cp, 0);
 305         fclose (fp);
 306     }
 307
 308     /* Check for public cache location */
 309     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 310         cache_public = NULL;
 311
 312     /* Check for private cache location */
 313     if (!(cache_private = context_find (nmhprivcache)))
 314         cache_private = ".cache";
 315     cache_private = mh_xstrdup(m_maildir(cache_private));
 316
 317     if (!context_find ("path"))
 318         free (path ("./", TFOLDER));
 319
 320     if (file && msgs.size)
 321         die("cannot specify msg and file at same time!");
 322
 323     /*
 324      * check if message is coming from file
 325      */
 326     if (file) {
 327         cts = mh_xcalloc(2, sizeof *cts);
 328         ctp = cts;
 329
 330         if ((ct = parse_mime (file)))
 331             *ctp++ = ct;
 332
 333         headersw = 0;
 334     } else {
 335         /*
 336          * message(s) are coming from a folder
 337          */
 338         if (!msgs.size)
 339             app_msgarg(&msgs, "cur");
 340         if (!folder)
 341             folder = getfolder (1);
 342         maildir = m_maildir (folder);
 343
 344         if (chdir (maildir) == NOTOK)
 345             adios (maildir, "unable to change directory to");
 346
 347         /* read folder and create message structure */
 348         if (!(mp = folder_read (folder, 1)))
 349             die("unable to read folder %s", folder);
 350
 351         /* check for empty folder */
 352         if (mp->nummsg == 0)
 353             die("no messages in %s", folder);
 354
 355         /* parse all the message ranges/sequences and set SELECTED */
 356         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 357             if (!m_convert (mp, msgs.msgs[msgnum]))
 358                 done (1);
 359
 360         /*
 361          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 362          * since we will use that as a tag to know which messages
 363          * to remove from the "unseen" sequence.
 364          */
 365         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 366             if (is_selected(mp, msgnum))
 367                 set_unseen (mp, msgnum);
 368
 369         seq_setprev (mp);       /* set the Previous-Sequence */
 370         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 371
 372         cts = mh_xcalloc(mp->numsel + 1, sizeof *cts);
 373         ctp = cts;
 374
 375         /*
 376          * Parse all the SELECTED messages.
 377          */
 378         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 379             if (is_selected(mp, msgnum)) {
 380                 char *msgnam;
 381
 382                 msgnam = m_name (msgnum);
 383                 if ((ct = parse_mime (msgnam)))
 384                     *ctp++ = ct;
 385             }
 386         }
 387     }
 388
 389     if (!*cts)
 390         done (1);
 391
 392     userrs = true;
 393     SIGNAL (SIGQUIT, quitser);
 394     SIGNAL (SIGPIPE, pipeser);
 395
 396     /*
 397      * Get the associated umask for the relevant contents.
 398      */
 399     for (ctp = cts; *ctp; ctp++) {
 400         struct stat st;
 401
 402         ct = *ctp;
 403         if (type_ok (ct, 1) && !ct->c_umask) {
 404             if (stat (ct->c_file, &st) != NOTOK)
 405                 ct->c_umask = ~(st.st_mode & 0777);
 406             else
 407                 ct->c_umask = ~m_gmprot();
 408         }
 409     }
 410
 411     /* If reading from a folder, do some updating */
 412     if (mp) {
 413         context_replace (pfolder, folder);/* update current folder  */
 414         seq_setcur (mp, mp->hghsel);      /* update current message */
 415         seq_save (mp);                    /* synchronize sequences  */
 416         context_save ();                  /* save the context file  */
 417     }
 418
 419     if (concatsw)
 420         m_popen(moreproc, 0);
 421
 422     /*
 423      * Show the message content
 424      */
 425     show_all_messages (cts, concatsw, textonly, inlineonly);
 426
 427     /* Now free all the structures for the content */
 428     for (ctp = cts; *ctp; ctp++)
 429         free_content (*ctp);
 430
 431     free(cts);
 432     cts = NULL;
 433
 434     if (concatsw)
 435         m_pclose();
 436
 437     done (0);
 438     return 1;
 439 }
 440
 441
 442 static void
 443 pipeser (int i)
 444 {
 445     if (i == SIGQUIT) {
 446         fflush (stdout);
 447         fprintf (stderr, "\n");
 448         fflush (stderr);
 449     }
 450
 451     done (1);
 452     /* NOTREACHED */
 453 }