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/readconfig.h"
  10 #include "sbr/ambigsw.h"
  11 #include "sbr/path.h"
  12 #include "sbr/print_version.h"
  13 #include "sbr/print_help.h"
  14 #include "sbr/error.h"
  15 #include <fcntl.h>
  16 #include "h/signals.h"
  17 #include "h/md5.h"
  18 #include "h/mts.h"
  19 #include "h/tws.h"
  20 #include "h/fmt_scan.h"
  21 #include "h/mime.h"
  22 #include "h/mhparse.h"
  23 #include "h/mhcachesbr.h"
  24 #include "h/done.h"
  25 #include "h/utils.h"
  26 #include "mhmisc.h"
  27 #include "sbr/m_maildir.h"
  28 #include "sbr/m_popen.h"
  29 #include "mhfree.h"
  30 #include "mhshowsbr.h"
  31
  32 #define MHSHOW_SWITCHES \
  33     X("check", 0, CHECKSW) \
  34     X("nocheck", 0, NCHECKSW) \
  35     X("verbose", 0, VERBSW) \
  36     X("noverbose", 0, NVERBSW) \
  37     X("concat", 0, CONCATSW) \
  38     X("noconcat", 0, NCONCATSW) \
  39     X("textonly", 0, TEXTONLYSW) \
  40     X("notextonly", 0, NTEXTONLYSW) \
  41     X("inlineonly", 0, INLINESW) \
  42     X("noinlineonly", 0, NINLINESW) \
  43     X("file file", 0, FILESW) \
  44     X("form formfile", 0, FORMSW) \
  45     X("header", 0, HEADSW) \
  46     X("noheader", 0, NHEADSW) \
  47     X("headerform formfile", 0, HEADFORMSW) \
  48     X("markform formfile", 0, MARKFORMSW) \
  49     X("part number", 0, PARTSW) \
  50     X("type content", 0, TYPESW) \
  51     X("prefer content", 0, PREFERSW) \
  52     X("noprefer", 0, NPREFERSW) \
  53     X("rcache policy", 0, RCACHESW) \
  54     X("wcache policy", 0, WCACHESW) \
  55     X("version", 0, VERSIONSW) \
  56     X("help", 0, HELPSW) \
  57     /*                                  \
  58      * switches for moreproc/mhlproc    \
  59      */                                 \
  60     X("moreproc program", -4, PROGSW) \
  61     X("nomoreproc", -3, NPROGSW) \
  62     X("length lines", -4, LENSW) \
  63     X("width columns", -4, WIDTHSW) \
  64     /*                          \
  65      * switches for debugging   \
  66      */                         \
  67     X("debug", -5, DEBUGSW) \
  68
  69 #define X(sw, minchars, id) id,
  70 DEFINE_SWITCH_ENUM(MHSHOW);
  71 #undef X
  72
  73 #define X(sw, minchars, id) { sw, minchars, id },
  74 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  75 #undef X
  76
  77
  78 int debugsw = 0;
  79 int verbosw = 0;
  80
  81 #define quitser pipeser
  82
  83 /*
  84  * static prototypes
  85  */
  86 static void pipeser (int);
  87
  88
  89 int
  90 main (int argc, char **argv)
  91 {
  92     int msgnum, *icachesw, concatsw = -1, textonly = -1, inlineonly = -1;
  93     char *cp, *file = NULL;
  94     char *maildir, buf[100], **argp;
  95     char **arguments;
  96     struct msgs_array msgs = { 0, 0, NULL };
  97     struct msgs *mp = NULL;
  98     CT ct, *ctp;
  99     FILE *fp;
 100
 101     if (nmh_init(argv[0], true, true)) { return 1; }
 102
 103     set_done(freects_done);
 104
 105     arguments = getarguments (invo_name, argc, argv, 1);
 106     argp = arguments;
 107
 108     /*
 109      * Parse arguments
 110      */
 111     while ((cp = *argp++)) {
 112         if (*cp == '-') {
 113             switch (smatch (++cp, switches)) {
 114             case AMBIGSW:
 115                 ambigsw (cp, switches);
 116                 done (1);
 117             case UNKWNSW:
 118                 die("-%s unknown", cp);
 119
 120             case HELPSW:
 121                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 122                         invo_name);
 123                 print_help (buf, switches, 1);
 124                 done (0);
 125             case VERSIONSW:
 126                 print_version(invo_name);
 127                 done (0);
 128
 129             case RCACHESW:
 130                 icachesw = &rcachesw;
 131                 goto do_cache;
 132             case WCACHESW:
 133                 icachesw = &wcachesw;
 134 do_cache:
 135                 if (!(cp = *argp++) || *cp == '-')
 136                     die("missing argument to %s", argp[-2]);
 137                 switch (*icachesw = smatch (cp, cache_policy)) {
 138                 case AMBIGSW:
 139                     ambigsw (cp, cache_policy);
 140                     done (1);
 141                 case UNKWNSW:
 142                     die("%s unknown", cp);
 143                 default:
 144                     break;
 145                 }
 146                 continue;
 147
 148             case CHECKSW:
 149                 checksw++;
 150                 continue;
 151             case NCHECKSW:
 152                 checksw = 0;
 153                 continue;
 154
 155             case CONCATSW:
 156                 concatsw = 1;
 157                 continue;
 158             case NCONCATSW:
 159                 concatsw = 0;
 160                 continue;
 161             case TEXTONLYSW:
 162                 textonly = 1;
 163                 continue;
 164             case NTEXTONLYSW:
 165                 textonly = 0;
 166                 continue;
 167             case INLINESW:
 168                 inlineonly = 1;
 169                 continue;
 170             case NINLINESW:
 171                 inlineonly = 0;
 172                 continue;
 173
 174             case PARTSW:
 175                 if (!(cp = *argp++) || *cp == '-')
 176                     die("missing argument to %s", argp[-2]);
 177                 if (npart >= NPARTS)
 178                     die("too many parts (starting with %s), %d max",
 179                            cp, NPARTS);
 180                 parts[npart++] = cp;
 181                 continue;
 182
 183             case TYPESW:
 184                 if (!(cp = *argp++) || *cp == '-')
 185                     die("missing argument to %s", argp[-2]);
 186                 if (ntype >= NTYPES)
 187                     die("too many types (starting with %s), %d max",
 188                            cp, NTYPES);
 189                 types[ntype++] = cp;
 190                 continue;
 191
 192             case PREFERSW:
 193                 if (!(cp = *argp++) || *cp == '-')
 194                     die("missing argument to %s", argp[-2]);
 195                 if (npreferred >= NPREFS)
 196                     die("too many preferred types (starting with %s), %d max",
 197                            cp, NPREFS);
 198                 mime_preference[npreferred].type = cp;
 199                 cp = strchr(cp, '/');
 200                 if (cp) *cp++ = '\0';
 201                 mime_preference[npreferred++].subtype = cp;
 202                 continue;
 203
 204             case NPREFERSW:
 205                 npreferred = 0;
 206                 continue;
 207
 208             case FILESW:
 209                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 210                     die("missing argument to %s", argp[-2]);
 211                 file = *cp == '-' ? cp : path (cp, TFILE);
 212                 continue;
 213
 214             case FORMSW:
 215                 if (!(cp = *argp++) || *cp == '-')
 216                     die("missing argument to %s", argp[-2]);
 217                 free(formsw);
 218                 formsw = mh_xstrdup(etcpath(cp));
 219                 continue;
 220
 221             case HEADSW:
 222                 headersw = 1;
 223                 continue;
 224             case NHEADSW:
 225                 headersw = 0;
 226                 continue;
 227
 228             case HEADFORMSW:
 229                 if (!(headerform = *argp++) || *headerform == '-')
 230                     die("missing argument to %s", argp[-2]);
 231                 continue;
 232
 233             case MARKFORMSW:
 234                 if (!(markerform = *argp++) || *markerform == '-')
 235                     die("missing argument to %s", argp[-2]);
 236                 continue;
 237
 238             /*
 239              * Switches for moreproc/mhlproc
 240              */
 241             case PROGSW:
 242                 if (!(progsw = *argp++) || *progsw == '-')
 243                     die("missing argument to %s", argp[-2]);
 244                 continue;
 245             case NPROGSW:
 246                 nomore++;
 247                 continue;
 248
 249             case LENSW:
 250             case WIDTHSW:
 251                 if (!(cp = *argp++) || *cp == '-')
 252                     die("missing argument to %s", argp[-2]);
 253                 continue;
 254
 255             case VERBSW:
 256                 verbosw = 1;
 257                 continue;
 258             case NVERBSW:
 259                 verbosw = 0;
 260                 continue;
 261             case DEBUGSW:
 262                 debugsw = 1;
 263                 continue;
 264             }
 265         }
 266         if (*cp == '+' || *cp == '@') {
 267             if (folder)
 268                 die("only one folder at a time!");
 269             folder = pluspath (cp);
 270         } else
 271                 app_msgarg(&msgs, cp);
 272     }
 273
 274     /* null terminate the list of acceptable parts/types */
 275     parts[npart] = NULL;
 276     types[ntype] = NULL;
 277
 278     /*
 279      * If we had any specific parts or types specified, turn off text only
 280      * content.
 281      */
 282
 283     if (npart > 0 || ntype > 0) {
 284         if (textonly == -1)
 285             textonly = 0;
 286         if (inlineonly == -1)
 287             inlineonly = 0;
 288     }
 289
 290     /*
 291      * Check if we've specified an additional profile
 292      */
 293     if ((cp = getenv ("MHSHOW"))) {
 294         if ((fp = fopen (cp, "r"))) {
 295             readconfig(NULL, fp, cp, 0);
 296             fclose (fp);
 297         } else {
 298             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 299         }
 300     }
 301
 302     /*
 303      * Read the standard profile setup
 304      */
 305     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 306         readconfig(NULL, fp, cp, 0);
 307         fclose (fp);
 308     }
 309
 310     /* Check for public cache location */
 311     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 312         cache_public = NULL;
 313
 314     /* Check for private cache location */
 315     if (!(cache_private = context_find (nmhprivcache)))
 316         cache_private = ".cache";
 317     cache_private = mh_xstrdup(m_maildir(cache_private));
 318
 319     if (!context_find ("path"))
 320         free (path ("./", TFOLDER));
 321
 322     if (file && msgs.size)
 323         die("cannot specify msg and file at same time!");
 324
 325     /*
 326      * check if message is coming from file
 327      */
 328     if (file) {
 329         cts = mh_xcalloc(2, sizeof *cts);
 330         ctp = cts;
 331
 332         if ((ct = parse_mime (file)))
 333             *ctp++ = ct;
 334
 335         headersw = 0;
 336     } else {
 337         /*
 338          * message(s) are coming from a folder
 339          */
 340         if (!msgs.size)
 341             app_msgarg(&msgs, "cur");
 342         if (!folder)
 343             folder = getfolder (1);
 344         maildir = m_maildir (folder);
 345
 346         if (chdir (maildir) == NOTOK)
 347             adios (maildir, "unable to change directory to");
 348
 349         /* read folder and create message structure */
 350         if (!(mp = folder_read (folder, 1)))
 351             die("unable to read folder %s", folder);
 352
 353         /* check for empty folder */
 354         if (mp->nummsg == 0)
 355             die("no messages in %s", folder);
 356
 357         /* parse all the message ranges/sequences and set SELECTED */
 358         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 359             if (!m_convert (mp, msgs.msgs[msgnum]))
 360                 done (1);
 361
 362         /*
 363          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 364          * since we will use that as a tag to know which messages
 365          * to remove from the "unseen" sequence.
 366          */
 367         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 368             if (is_selected(mp, msgnum))
 369                 set_unseen (mp, msgnum);
 370
 371         seq_setprev (mp);       /* set the Previous-Sequence */
 372         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 373
 374         cts = mh_xcalloc(mp->numsel + 1, sizeof *cts);
 375         ctp = cts;
 376
 377         /*
 378          * Parse all the SELECTED messages.
 379          */
 380         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 381             if (is_selected(mp, msgnum)) {
 382                 char *msgnam;
 383
 384                 msgnam = m_name (msgnum);
 385                 if ((ct = parse_mime (msgnam)))
 386                     *ctp++ = ct;
 387             }
 388         }
 389     }
 390
 391     if (!*cts)
 392         done (1);
 393
 394     userrs = true;
 395     SIGNAL (SIGQUIT, quitser);
 396     SIGNAL (SIGPIPE, pipeser);
 397
 398     /*
 399      * Get the associated umask for the relevant contents.
 400      */
 401     for (ctp = cts; *ctp; ctp++) {
 402         struct stat st;
 403
 404         ct = *ctp;
 405         if (type_ok (ct, 1) && !ct->c_umask) {
 406             if (stat (ct->c_file, &st) != NOTOK)
 407                 ct->c_umask = ~(st.st_mode & 0777);
 408             else
 409                 ct->c_umask = ~m_gmprot();
 410         }
 411     }
 412
 413     /* If reading from a folder, do some updating */
 414     if (mp) {
 415         context_replace (pfolder, folder);/* update current folder  */
 416         seq_setcur (mp, mp->hghsel);      /* update current message */
 417         seq_save (mp);                    /* synchronize sequences  */
 418         context_save ();                  /* save the context file  */
 419     }
 420
 421     if (concatsw)
 422         m_popen(moreproc, 0);
 423
 424     /*
 425      * Show the message content
 426      */
 427     show_all_messages (cts, concatsw, textonly, inlineonly);
 428
 429     /* Now free all the structures for the content */
 430     for (ctp = cts; *ctp; ctp++)
 431         free_content (*ctp);
 432
 433     free(cts);
 434     cts = NULL;
 435
 436     if (concatsw)
 437         m_pclose();
 438
 439     done (0);
 440     return 1;
 441 }
 442
 443
 444 static void
 445 pipeser (int i)
 446 {
 447     if (i == SIGQUIT) {
 448         fflush (stdout);
 449         fprintf (stderr, "\n");
 450         fflush (stderr);
 451     }
 452
 453     done (1);
 454     /* NOTREACHED */
 455 }