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/context_find.h"
  10 #include "sbr/readconfig.h"
  11 #include "sbr/ambigsw.h"
  12 #include "sbr/path.h"
  13 #include "sbr/print_version.h"
  14 #include "sbr/print_help.h"
  15 #include "sbr/error.h"
  16 #include <fcntl.h>
  17 #include "h/signals.h"
  18 #include "h/md5.h"
  19 #include "h/mts.h"
  20 #include "h/tws.h"
  21 #include "h/fmt_scan.h"
  22 #include "h/mime.h"
  23 #include "h/mhparse.h"
  24 #include "h/mhcachesbr.h"
  25 #include "h/done.h"
  26 #include "h/utils.h"
  27 #include "mhmisc.h"
  28 #include "sbr/m_maildir.h"
  29 #include "sbr/m_popen.h"
  30 #include "mhfree.h"
  31 #include "mhshowsbr.h"
  32
  33 #define MHSHOW_SWITCHES \
  34     X("check", 0, CHECKSW) \
  35     X("nocheck", 0, NCHECKSW) \
  36     X("verbose", 0, VERBSW) \
  37     X("noverbose", 0, NVERBSW) \
  38     X("concat", 0, CONCATSW) \
  39     X("noconcat", 0, NCONCATSW) \
  40     X("textonly", 0, TEXTONLYSW) \
  41     X("notextonly", 0, NTEXTONLYSW) \
  42     X("inlineonly", 0, INLINESW) \
  43     X("noinlineonly", 0, NINLINESW) \
  44     X("file file", 0, FILESW) \
  45     X("form formfile", 0, FORMSW) \
  46     X("header", 0, HEADSW) \
  47     X("noheader", 0, NHEADSW) \
  48     X("headerform formfile", 0, HEADFORMSW) \
  49     X("markform formfile", 0, MARKFORMSW) \
  50     X("part number", 0, PARTSW) \
  51     X("type content", 0, TYPESW) \
  52     X("prefer content", 0, PREFERSW) \
  53     X("noprefer", 0, NPREFERSW) \
  54     X("rcache policy", 0, RCACHESW) \
  55     X("wcache policy", 0, WCACHESW) \
  56     X("version", 0, VERSIONSW) \
  57     X("help", 0, HELPSW) \
  58     /*                                  \
  59      * switches for moreproc/mhlproc    \
  60      */                                 \
  61     X("moreproc program", -4, PROGSW) \
  62     X("nomoreproc", -3, NPROGSW) \
  63     X("length lines", -4, LENSW) \
  64     X("width columns", -4, WIDTHSW) \
  65     /*                          \
  66      * switches for debugging   \
  67      */                         \
  68     X("debug", -5, DEBUGSW) \
  69
  70 #define X(sw, minchars, id) id,
  71 DEFINE_SWITCH_ENUM(MHSHOW);
  72 #undef X
  73
  74 #define X(sw, minchars, id) { sw, minchars, id },
  75 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  76 #undef X
  77
  78
  79 int debugsw = 0;
  80 int verbosw = 0;
  81
  82 #define quitser pipeser
  83
  84 /*
  85  * static prototypes
  86  */
  87 static void pipeser (int);
  88
  89
  90 int
  91 main (int argc, char **argv)
  92 {
  93     int msgnum, *icachesw, concatsw = -1, textonly = -1, inlineonly = -1;
  94     char *cp, *file = NULL;
  95     char *maildir, buf[100], **argp;
  96     char **arguments;
  97     struct msgs_array msgs = { 0, 0, NULL };
  98     struct msgs *mp = NULL;
  99     CT ct, *ctp;
 100     FILE *fp;
 101
 102     if (nmh_init(argv[0], true, true)) { return 1; }
 103
 104     set_done(freects_done);
 105
 106     arguments = getarguments (invo_name, argc, argv, 1);
 107     argp = arguments;
 108
 109     /*
 110      * Parse arguments
 111      */
 112     while ((cp = *argp++)) {
 113         if (*cp == '-') {
 114             switch (smatch (++cp, switches)) {
 115             case AMBIGSW:
 116                 ambigsw (cp, switches);
 117                 done (1);
 118             case UNKWNSW:
 119                 die("-%s unknown", cp);
 120
 121             case HELPSW:
 122                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 123                         invo_name);
 124                 print_help (buf, switches, 1);
 125                 done (0);
 126             case VERSIONSW:
 127                 print_version(invo_name);
 128                 done (0);
 129
 130             case RCACHESW:
 131                 icachesw = &rcachesw;
 132                 goto do_cache;
 133             case WCACHESW:
 134                 icachesw = &wcachesw;
 135 do_cache:
 136                 if (!(cp = *argp++) || *cp == '-')
 137                     die("missing argument to %s", argp[-2]);
 138                 switch (*icachesw = smatch (cp, cache_policy)) {
 139                 case AMBIGSW:
 140                     ambigsw (cp, cache_policy);
 141                     done (1);
 142                 case UNKWNSW:
 143                     die("%s unknown", cp);
 144                 default:
 145                     break;
 146                 }
 147                 continue;
 148
 149             case CHECKSW:
 150                 checksw++;
 151                 continue;
 152             case NCHECKSW:
 153                 checksw = 0;
 154                 continue;
 155
 156             case CONCATSW:
 157                 concatsw = 1;
 158                 continue;
 159             case NCONCATSW:
 160                 concatsw = 0;
 161                 continue;
 162             case TEXTONLYSW:
 163                 textonly = 1;
 164                 continue;
 165             case NTEXTONLYSW:
 166                 textonly = 0;
 167                 continue;
 168             case INLINESW:
 169                 inlineonly = 1;
 170                 continue;
 171             case NINLINESW:
 172                 inlineonly = 0;
 173                 continue;
 174
 175             case PARTSW:
 176                 if (!(cp = *argp++) || *cp == '-')
 177                     die("missing argument to %s", argp[-2]);
 178                 if (npart >= NPARTS)
 179                     die("too many parts (starting with %s), %d max",
 180                            cp, NPARTS);
 181                 parts[npart++] = cp;
 182                 continue;
 183
 184             case TYPESW:
 185                 if (!(cp = *argp++) || *cp == '-')
 186                     die("missing argument to %s", argp[-2]);
 187                 if (ntype >= NTYPES)
 188                     die("too many types (starting with %s), %d max",
 189                            cp, NTYPES);
 190                 types[ntype++] = cp;
 191                 continue;
 192
 193             case PREFERSW:
 194                 if (!(cp = *argp++) || *cp == '-')
 195                     die("missing argument to %s", argp[-2]);
 196                 if (npreferred >= NPREFS)
 197                     die("too many preferred types (starting with %s), %d max",
 198                            cp, NPREFS);
 199                 mime_preference[npreferred].type = cp;
 200                 cp = strchr(cp, '/');
 201                 if (cp) *cp++ = '\0';
 202                 mime_preference[npreferred++].subtype = cp;
 203                 continue;
 204
 205             case NPREFERSW:
 206                 npreferred = 0;
 207                 continue;
 208
 209             case FILESW:
 210                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 211                     die("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                     die("missing argument to %s", argp[-2]);
 218                 free(formsw);
 219                 formsw = mh_xstrdup(etcpath(cp));
 220                 continue;
 221
 222             case HEADSW:
 223                 headersw = 1;
 224                 continue;
 225             case NHEADSW:
 226                 headersw = 0;
 227                 continue;
 228
 229             case HEADFORMSW:
 230                 if (!(headerform = *argp++) || *headerform == '-')
 231                     die("missing argument to %s", argp[-2]);
 232                 continue;
 233
 234             case MARKFORMSW:
 235                 if (!(markerform = *argp++) || *markerform == '-')
 236                     die("missing argument to %s", argp[-2]);
 237                 continue;
 238
 239             /*
 240              * Switches for moreproc/mhlproc
 241              */
 242             case PROGSW:
 243                 if (!(progsw = *argp++) || *progsw == '-')
 244                     die("missing argument to %s", argp[-2]);
 245                 continue;
 246             case NPROGSW:
 247                 nomore++;
 248                 continue;
 249
 250             case LENSW:
 251             case WIDTHSW:
 252                 if (!(cp = *argp++) || *cp == '-')
 253                     die("missing argument to %s", argp[-2]);
 254                 continue;
 255
 256             case VERBSW:
 257                 verbosw = 1;
 258                 continue;
 259             case NVERBSW:
 260                 verbosw = 0;
 261                 continue;
 262             case DEBUGSW:
 263                 debugsw = 1;
 264                 continue;
 265             }
 266         }
 267         if (*cp == '+' || *cp == '@') {
 268             if (folder)
 269                 die("only one folder at a time!");
 270             folder = pluspath (cp);
 271         } else
 272                 app_msgarg(&msgs, cp);
 273     }
 274
 275     /* null terminate the list of acceptable parts/types */
 276     parts[npart] = NULL;
 277     types[ntype] = NULL;
 278
 279     /*
 280      * If we had any specific parts or types specified, turn off text only
 281      * content.
 282      */
 283
 284     if (npart > 0 || ntype > 0) {
 285         if (textonly == -1)
 286             textonly = 0;
 287         if (inlineonly == -1)
 288             inlineonly = 0;
 289     }
 290
 291     /*
 292      * Check if we've specified an additional profile
 293      */
 294     if ((cp = getenv ("MHSHOW"))) {
 295         if ((fp = fopen (cp, "r"))) {
 296             readconfig(NULL, fp, cp, 0);
 297             fclose (fp);
 298         } else {
 299             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 300         }
 301     }
 302
 303     /*
 304      * Read the standard profile setup
 305      */
 306     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 307         readconfig(NULL, fp, cp, 0);
 308         fclose (fp);
 309     }
 310
 311     /* Check for public cache location */
 312     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 313         cache_public = NULL;
 314
 315     /* Check for private cache location */
 316     if (!(cache_private = context_find (nmhprivcache)))
 317         cache_private = ".cache";
 318     cache_private = mh_xstrdup(m_maildir(cache_private));
 319
 320     if (!context_find ("path"))
 321         free (path ("./", TFOLDER));
 322
 323     if (file && msgs.size)
 324         die("cannot specify msg and file at same time!");
 325
 326     /*
 327      * check if message is coming from file
 328      */
 329     if (file) {
 330         cts = mh_xcalloc(2, sizeof *cts);
 331         ctp = cts;
 332
 333         if ((ct = parse_mime (file)))
 334             *ctp++ = ct;
 335
 336         headersw = 0;
 337     } else {
 338         /*
 339          * message(s) are coming from a folder
 340          */
 341         if (!msgs.size)
 342             app_msgarg(&msgs, "cur");
 343         if (!folder)
 344             folder = getfolder (1);
 345         maildir = m_maildir (folder);
 346
 347         if (chdir (maildir) == NOTOK)
 348             adios (maildir, "unable to change directory to");
 349
 350         /* read folder and create message structure */
 351         if (!(mp = folder_read (folder, 1)))
 352             die("unable to read folder %s", folder);
 353
 354         /* check for empty folder */
 355         if (mp->nummsg == 0)
 356             die("no messages in %s", folder);
 357
 358         /* parse all the message ranges/sequences and set SELECTED */
 359         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 360             if (!m_convert (mp, msgs.msgs[msgnum]))
 361                 done (1);
 362
 363         /*
 364          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 365          * since we will use that as a tag to know which messages
 366          * to remove from the "unseen" sequence.
 367          */
 368         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 369             if (is_selected(mp, msgnum))
 370                 set_unseen (mp, msgnum);
 371
 372         seq_setprev (mp);       /* set the Previous-Sequence */
 373         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 374
 375         cts = mh_xcalloc(mp->numsel + 1, sizeof *cts);
 376         ctp = cts;
 377
 378         /*
 379          * Parse all the SELECTED messages.
 380          */
 381         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 382             if (is_selected(mp, msgnum)) {
 383                 char *msgnam;
 384
 385                 msgnam = m_name (msgnum);
 386                 if ((ct = parse_mime (msgnam)))
 387                     *ctp++ = ct;
 388             }
 389         }
 390     }
 391
 392     if (!*cts)
 393         done (1);
 394
 395     userrs = true;
 396     SIGNAL (SIGQUIT, quitser);
 397     SIGNAL (SIGPIPE, pipeser);
 398
 399     /*
 400      * Get the associated umask for the relevant contents.
 401      */
 402     for (ctp = cts; *ctp; ctp++) {
 403         struct stat st;
 404
 405         ct = *ctp;
 406         if (type_ok (ct, 1) && !ct->c_umask) {
 407             if (stat (ct->c_file, &st) != NOTOK)
 408                 ct->c_umask = ~(st.st_mode & 0777);
 409             else
 410                 ct->c_umask = ~m_gmprot();
 411         }
 412     }
 413
 414     /* If reading from a folder, do some updating */
 415     if (mp) {
 416         context_replace (pfolder, folder);/* update current folder  */
 417         seq_setcur (mp, mp->hghsel);      /* update current message */
 418         seq_save (mp);                    /* synchronize sequences  */
 419         context_save ();                  /* save the context file  */
 420     }
 421
 422     if (concatsw)
 423         m_popen(moreproc, 0);
 424
 425     /*
 426      * Show the message content
 427      */
 428     show_all_messages (cts, concatsw, textonly, inlineonly);
 429
 430     /* Now free all the structures for the content */
 431     for (ctp = cts; *ctp; ctp++)
 432         free_content (*ctp);
 433
 434     free(cts);
 435     cts = NULL;
 436
 437     if (concatsw)
 438         m_pclose();
 439
 440     done (0);
 441     return 1;
 442 }
 443
 444
 445 static void
 446 pipeser (int i)
 447 {
 448     if (i == SIGQUIT) {
 449         fflush (stdout);
 450         fprintf (stderr, "\n");
 451         fflush (stderr);
 452     }
 453
 454     done (1);
 455     /* NOTREACHED */
 456 }