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/getfolder.h"
  10 #include "sbr/folder_read.h"
  11 #include "sbr/context_save.h"
  12 #include "sbr/context_replace.h"
  13 #include "sbr/context_find.h"
  14 #include "sbr/readconfig.h"
  15 #include "sbr/ambigsw.h"
  16 #include "sbr/path.h"
  17 #include "sbr/print_version.h"
  18 #include "sbr/print_help.h"
  19 #include "sbr/error.h"
  20 #include <fcntl.h>
  21 #include "h/signals.h"
  22 #include "h/md5.h"
  23 #include "h/mts.h"
  24 #include "h/tws.h"
  25 #include "h/fmt_scan.h"
  26 #include "h/mime.h"
  27 #include "h/mhparse.h"
  28 #include "h/mhcachesbr.h"
  29 #include "h/done.h"
  30 #include "h/utils.h"
  31 #include "mhmisc.h"
  32 #include "sbr/m_maildir.h"
  33 #include "sbr/m_popen.h"
  34 #include "mhfree.h"
  35 #include "mhshowsbr.h"
  36
  37 #define MHSHOW_SWITCHES \
  38     X("check", 0, CHECKSW) \
  39     X("nocheck", 0, NCHECKSW) \
  40     X("verbose", 0, VERBSW) \
  41     X("noverbose", 0, NVERBSW) \
  42     X("concat", 0, CONCATSW) \
  43     X("noconcat", 0, NCONCATSW) \
  44     X("textonly", 0, TEXTONLYSW) \
  45     X("notextonly", 0, NTEXTONLYSW) \
  46     X("inlineonly", 0, INLINESW) \
  47     X("noinlineonly", 0, NINLINESW) \
  48     X("file file", 0, FILESW) \
  49     X("form formfile", 0, FORMSW) \
  50     X("header", 0, HEADSW) \
  51     X("noheader", 0, NHEADSW) \
  52     X("headerform formfile", 0, HEADFORMSW) \
  53     X("markform formfile", 0, MARKFORMSW) \
  54     X("part number", 0, PARTSW) \
  55     X("type content", 0, TYPESW) \
  56     X("prefer content", 0, PREFERSW) \
  57     X("noprefer", 0, NPREFERSW) \
  58     X("rcache policy", 0, RCACHESW) \
  59     X("wcache policy", 0, WCACHESW) \
  60     X("version", 0, VERSIONSW) \
  61     X("help", 0, HELPSW) \
  62     /*                                  \
  63      * switches for moreproc/mhlproc    \
  64      */                                 \
  65     X("moreproc program", -4, PROGSW) \
  66     X("nomoreproc", -3, NPROGSW) \
  67     X("length lines", -4, LENSW) \
  68     X("width columns", -4, WIDTHSW) \
  69     /*                          \
  70      * switches for debugging   \
  71      */                         \
  72     X("debug", -5, DEBUGSW) \
  73
  74 #define X(sw, minchars, id) id,
  75 DEFINE_SWITCH_ENUM(MHSHOW);
  76 #undef X
  77
  78 #define X(sw, minchars, id) { sw, minchars, id },
  79 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  80 #undef X
  81
  82
  83 int debugsw = 0;
  84 int verbosw = 0;
  85
  86 #define quitser pipeser
  87
  88 /*
  89  * static prototypes
  90  */
  91 static void pipeser (int);
  92
  93
  94 int
  95 main (int argc, char **argv)
  96 {
  97     int msgnum, *icachesw, concatsw = -1, textonly = -1, inlineonly = -1;
  98     char *cp, *file = NULL;
  99     char *maildir, buf[100], **argp;
 100     char **arguments;
 101     struct msgs_array msgs = { 0, 0, NULL };
 102     struct msgs *mp = NULL;
 103     CT ct, *ctp;
 104     FILE *fp;
 105
 106     if (nmh_init(argv[0], true, true)) { return 1; }
 107
 108     set_done(freects_done);
 109
 110     arguments = getarguments (invo_name, argc, argv, 1);
 111     argp = arguments;
 112
 113     /*
 114      * Parse arguments
 115      */
 116     while ((cp = *argp++)) {
 117         if (*cp == '-') {
 118             switch (smatch (++cp, switches)) {
 119             case AMBIGSW:
 120                 ambigsw (cp, switches);
 121                 done (1);
 122             case UNKWNSW:
 123                 die("-%s unknown", cp);
 124
 125             case HELPSW:
 126                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 127                         invo_name);
 128                 print_help (buf, switches, 1);
 129                 done (0);
 130             case VERSIONSW:
 131                 print_version(invo_name);
 132                 done (0);
 133
 134             case RCACHESW:
 135                 icachesw = &rcachesw;
 136                 goto do_cache;
 137             case WCACHESW:
 138                 icachesw = &wcachesw;
 139 do_cache:
 140                 if (!(cp = *argp++) || *cp == '-')
 141                     die("missing argument to %s", argp[-2]);
 142                 switch (*icachesw = smatch (cp, cache_policy)) {
 143                 case AMBIGSW:
 144                     ambigsw (cp, cache_policy);
 145                     done (1);
 146                 case UNKWNSW:
 147                     die("%s unknown", cp);
 148                 default:
 149                     break;
 150                 }
 151                 continue;
 152
 153             case CHECKSW:
 154                 checksw++;
 155                 continue;
 156             case NCHECKSW:
 157                 checksw = 0;
 158                 continue;
 159
 160             case CONCATSW:
 161                 concatsw = 1;
 162                 continue;
 163             case NCONCATSW:
 164                 concatsw = 0;
 165                 continue;
 166             case TEXTONLYSW:
 167                 textonly = 1;
 168                 continue;
 169             case NTEXTONLYSW:
 170                 textonly = 0;
 171                 continue;
 172             case INLINESW:
 173                 inlineonly = 1;
 174                 continue;
 175             case NINLINESW:
 176                 inlineonly = 0;
 177                 continue;
 178
 179             case PARTSW:
 180                 if (!(cp = *argp++) || *cp == '-')
 181                     die("missing argument to %s", argp[-2]);
 182                 if (npart >= NPARTS)
 183                     die("too many parts (starting with %s), %d max",
 184                            cp, NPARTS);
 185                 parts[npart++] = cp;
 186                 continue;
 187
 188             case TYPESW:
 189                 if (!(cp = *argp++) || *cp == '-')
 190                     die("missing argument to %s", argp[-2]);
 191                 if (ntype >= NTYPES)
 192                     die("too many types (starting with %s), %d max",
 193                            cp, NTYPES);
 194                 types[ntype++] = cp;
 195                 continue;
 196
 197             case PREFERSW:
 198                 if (!(cp = *argp++) || *cp == '-')
 199                     die("missing argument to %s", argp[-2]);
 200                 if (npreferred >= NPREFS)
 201                     die("too many preferred types (starting with %s), %d max",
 202                            cp, NPREFS);
 203                 mime_preference[npreferred].type = cp;
 204                 cp = strchr(cp, '/');
 205                 if (cp) *cp++ = '\0';
 206                 mime_preference[npreferred++].subtype = cp;
 207                 continue;
 208
 209             case NPREFERSW:
 210                 npreferred = 0;
 211                 continue;
 212
 213             case FILESW:
 214                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 215                     die("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                     die("missing argument to %s", argp[-2]);
 222                 free(formsw);
 223                 formsw = mh_xstrdup(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                     die("missing argument to %s", argp[-2]);
 236                 continue;
 237
 238             case MARKFORMSW:
 239                 if (!(markerform = *argp++) || *markerform == '-')
 240                     die("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                     die("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                     die("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                 die("only one folder at a time!");
 274             folder = pluspath (cp);
 275         } else
 276                 app_msgarg(&msgs, cp);
 277     }
 278
 279     /* null terminate the list of acceptable parts/types */
 280     parts[npart] = NULL;
 281     types[ntype] = NULL;
 282
 283     /*
 284      * If we had any specific parts or types specified, turn off text only
 285      * content.
 286      */
 287
 288     if (npart > 0 || ntype > 0) {
 289         if (textonly == -1)
 290             textonly = 0;
 291         if (inlineonly == -1)
 292             inlineonly = 0;
 293     }
 294
 295     /*
 296      * Check if we've specified an additional profile
 297      */
 298     if ((cp = getenv ("MHSHOW"))) {
 299         if ((fp = fopen (cp, "r"))) {
 300             readconfig(NULL, fp, cp, 0);
 301             fclose (fp);
 302         } else {
 303             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 304         }
 305     }
 306
 307     /*
 308      * Read the standard profile setup
 309      */
 310     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 311         readconfig(NULL, fp, cp, 0);
 312         fclose (fp);
 313     }
 314
 315     /* Check for public cache location */
 316     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 317         cache_public = NULL;
 318
 319     /* Check for private cache location */
 320     if (!(cache_private = context_find (nmhprivcache)))
 321         cache_private = ".cache";
 322     cache_private = mh_xstrdup(m_maildir(cache_private));
 323
 324     if (!context_find ("path"))
 325         free (path ("./", TFOLDER));
 326
 327     if (file && msgs.size)
 328         die("cannot specify msg and file at same time!");
 329
 330     /*
 331      * check if message is coming from file
 332      */
 333     if (file) {
 334         cts = mh_xcalloc(2, sizeof *cts);
 335         ctp = cts;
 336
 337         if ((ct = parse_mime (file)))
 338             *ctp++ = ct;
 339
 340         headersw = 0;
 341     } else {
 342         /*
 343          * message(s) are coming from a folder
 344          */
 345         if (!msgs.size)
 346             app_msgarg(&msgs, "cur");
 347         if (!folder)
 348             folder = getfolder (1);
 349         maildir = m_maildir (folder);
 350
 351         if (chdir (maildir) == NOTOK)
 352             adios (maildir, "unable to change directory to");
 353
 354         /* read folder and create message structure */
 355         if (!(mp = folder_read (folder, 1)))
 356             die("unable to read folder %s", folder);
 357
 358         /* check for empty folder */
 359         if (mp->nummsg == 0)
 360             die("no messages in %s", folder);
 361
 362         /* parse all the message ranges/sequences and set SELECTED */
 363         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 364             if (!m_convert (mp, msgs.msgs[msgnum]))
 365                 done (1);
 366
 367         /*
 368          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 369          * since we will use that as a tag to know which messages
 370          * to remove from the "unseen" sequence.
 371          */
 372         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 373             if (is_selected(mp, msgnum))
 374                 set_unseen (mp, msgnum);
 375
 376         seq_setprev (mp);       /* set the Previous-Sequence */
 377         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 378
 379         cts = mh_xcalloc(mp->numsel + 1, sizeof *cts);
 380         ctp = cts;
 381
 382         /*
 383          * Parse all the SELECTED messages.
 384          */
 385         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 386             if (is_selected(mp, msgnum)) {
 387                 char *msgnam;
 388
 389                 msgnam = m_name (msgnum);
 390                 if ((ct = parse_mime (msgnam)))
 391                     *ctp++ = ct;
 392             }
 393         }
 394     }
 395
 396     if (!*cts)
 397         done (1);
 398
 399     userrs = true;
 400     SIGNAL (SIGQUIT, quitser);
 401     SIGNAL (SIGPIPE, pipeser);
 402
 403     /*
 404      * Get the associated umask for the relevant contents.
 405      */
 406     for (ctp = cts; *ctp; ctp++) {
 407         struct stat st;
 408
 409         ct = *ctp;
 410         if (type_ok (ct, 1) && !ct->c_umask) {
 411             if (stat (ct->c_file, &st) != NOTOK)
 412                 ct->c_umask = ~(st.st_mode & 0777);
 413             else
 414                 ct->c_umask = ~m_gmprot();
 415         }
 416     }
 417
 418     /* If reading from a folder, do some updating */
 419     if (mp) {
 420         context_replace (pfolder, folder);/* update current folder  */
 421         seq_setcur (mp, mp->hghsel);      /* update current message */
 422         seq_save (mp);                    /* synchronize sequences  */
 423         context_save ();                  /* save the context file  */
 424     }
 425
 426     if (concatsw)
 427         m_popen(moreproc, 0);
 428
 429     /*
 430      * Show the message content
 431      */
 432     show_all_messages (cts, concatsw, textonly, inlineonly);
 433
 434     /* Now free all the structures for the content */
 435     for (ctp = cts; *ctp; ctp++)
 436         free_content (*ctp);
 437
 438     free(cts);
 439     cts = NULL;
 440
 441     if (concatsw)
 442         m_pclose();
 443
 444     done (0);
 445     return 1;
 446 }
 447
 448
 449 static void
 450 pipeser (int i)
 451 {
 452     if (i == SIGQUIT) {
 453         fflush (stdout);
 454         fprintf (stderr, "\n");
 455         fflush (stderr);
 456     }
 457
 458     done (1);
 459     /* NOTREACHED */
 460 }