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/folder_read.h"
  10 #include "sbr/context_save.h"
  11 #include "sbr/context_replace.h"
  12 #include "sbr/context_find.h"
  13 #include "sbr/readconfig.h"
  14 #include "sbr/ambigsw.h"
  15 #include "sbr/path.h"
  16 #include "sbr/print_version.h"
  17 #include "sbr/print_help.h"
  18 #include "sbr/error.h"
  19 #include <fcntl.h>
  20 #include "h/signals.h"
  21 #include "h/md5.h"
  22 #include "h/mts.h"
  23 #include "h/tws.h"
  24 #include "h/fmt_scan.h"
  25 #include "h/mime.h"
  26 #include "h/mhparse.h"
  27 #include "h/mhcachesbr.h"
  28 #include "h/done.h"
  29 #include "h/utils.h"
  30 #include "mhmisc.h"
  31 #include "sbr/m_maildir.h"
  32 #include "sbr/m_popen.h"
  33 #include "mhfree.h"
  34 #include "mhshowsbr.h"
  35
  36 #define MHSHOW_SWITCHES \
  37     X("check", 0, CHECKSW) \
  38     X("nocheck", 0, NCHECKSW) \
  39     X("verbose", 0, VERBSW) \
  40     X("noverbose", 0, NVERBSW) \
  41     X("concat", 0, CONCATSW) \
  42     X("noconcat", 0, NCONCATSW) \
  43     X("textonly", 0, TEXTONLYSW) \
  44     X("notextonly", 0, NTEXTONLYSW) \
  45     X("inlineonly", 0, INLINESW) \
  46     X("noinlineonly", 0, NINLINESW) \
  47     X("file file", 0, FILESW) \
  48     X("form formfile", 0, FORMSW) \
  49     X("header", 0, HEADSW) \
  50     X("noheader", 0, NHEADSW) \
  51     X("headerform formfile", 0, HEADFORMSW) \
  52     X("markform formfile", 0, MARKFORMSW) \
  53     X("part number", 0, PARTSW) \
  54     X("type content", 0, TYPESW) \
  55     X("prefer content", 0, PREFERSW) \
  56     X("noprefer", 0, NPREFERSW) \
  57     X("rcache policy", 0, RCACHESW) \
  58     X("wcache policy", 0, WCACHESW) \
  59     X("version", 0, VERSIONSW) \
  60     X("help", 0, HELPSW) \
  61     /*                                  \
  62      * switches for moreproc/mhlproc    \
  63      */                                 \
  64     X("moreproc program", -4, PROGSW) \
  65     X("nomoreproc", -3, NPROGSW) \
  66     X("length lines", -4, LENSW) \
  67     X("width columns", -4, WIDTHSW) \
  68     /*                          \
  69      * switches for debugging   \
  70      */                         \
  71     X("debug", -5, DEBUGSW) \
  72
  73 #define X(sw, minchars, id) id,
  74 DEFINE_SWITCH_ENUM(MHSHOW);
  75 #undef X
  76
  77 #define X(sw, minchars, id) { sw, minchars, id },
  78 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  79 #undef X
  80
  81
  82 int debugsw = 0;
  83 int verbosw = 0;
  84
  85 #define quitser pipeser
  86
  87 /*
  88  * static prototypes
  89  */
  90 static void pipeser (int);
  91
  92
  93 int
  94 main (int argc, char **argv)
  95 {
  96     int msgnum, *icachesw, concatsw = -1, textonly = -1, inlineonly = -1;
  97     char *cp, *file = NULL;
  98     char *maildir, buf[100], **argp;
  99     char **arguments;
 100     struct msgs_array msgs = { 0, 0, NULL };
 101     struct msgs *mp = NULL;
 102     CT ct, *ctp;
 103     FILE *fp;
 104
 105     if (nmh_init(argv[0], true, true)) { return 1; }
 106
 107     set_done(freects_done);
 108
 109     arguments = getarguments (invo_name, argc, argv, 1);
 110     argp = arguments;
 111
 112     /*
 113      * Parse arguments
 114      */
 115     while ((cp = *argp++)) {
 116         if (*cp == '-') {
 117             switch (smatch (++cp, switches)) {
 118             case AMBIGSW:
 119                 ambigsw (cp, switches);
 120                 done (1);
 121             case UNKWNSW:
 122                 die("-%s unknown", cp);
 123
 124             case HELPSW:
 125                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 126                         invo_name);
 127                 print_help (buf, switches, 1);
 128                 done (0);
 129             case VERSIONSW:
 130                 print_version(invo_name);
 131                 done (0);
 132
 133             case RCACHESW:
 134                 icachesw = &rcachesw;
 135                 goto do_cache;
 136             case WCACHESW:
 137                 icachesw = &wcachesw;
 138 do_cache:
 139                 if (!(cp = *argp++) || *cp == '-')
 140                     die("missing argument to %s", argp[-2]);
 141                 switch (*icachesw = smatch (cp, cache_policy)) {
 142                 case AMBIGSW:
 143                     ambigsw (cp, cache_policy);
 144                     done (1);
 145                 case UNKWNSW:
 146                     die("%s unknown", cp);
 147                 default:
 148                     break;
 149                 }
 150                 continue;
 151
 152             case CHECKSW:
 153                 checksw++;
 154                 continue;
 155             case NCHECKSW:
 156                 checksw = 0;
 157                 continue;
 158
 159             case CONCATSW:
 160                 concatsw = 1;
 161                 continue;
 162             case NCONCATSW:
 163                 concatsw = 0;
 164                 continue;
 165             case TEXTONLYSW:
 166                 textonly = 1;
 167                 continue;
 168             case NTEXTONLYSW:
 169                 textonly = 0;
 170                 continue;
 171             case INLINESW:
 172                 inlineonly = 1;
 173                 continue;
 174             case NINLINESW:
 175                 inlineonly = 0;
 176                 continue;
 177
 178             case PARTSW:
 179                 if (!(cp = *argp++) || *cp == '-')
 180                     die("missing argument to %s", argp[-2]);
 181                 if (npart >= NPARTS)
 182                     die("too many parts (starting with %s), %d max",
 183                            cp, NPARTS);
 184                 parts[npart++] = cp;
 185                 continue;
 186
 187             case TYPESW:
 188                 if (!(cp = *argp++) || *cp == '-')
 189                     die("missing argument to %s", argp[-2]);
 190                 if (ntype >= NTYPES)
 191                     die("too many types (starting with %s), %d max",
 192                            cp, NTYPES);
 193                 types[ntype++] = cp;
 194                 continue;
 195
 196             case PREFERSW:
 197                 if (!(cp = *argp++) || *cp == '-')
 198                     die("missing argument to %s", argp[-2]);
 199                 if (npreferred >= NPREFS)
 200                     die("too many preferred types (starting with %s), %d max",
 201                            cp, NPREFS);
 202                 mime_preference[npreferred].type = cp;
 203                 cp = strchr(cp, '/');
 204                 if (cp) *cp++ = '\0';
 205                 mime_preference[npreferred++].subtype = cp;
 206                 continue;
 207
 208             case NPREFERSW:
 209                 npreferred = 0;
 210                 continue;
 211
 212             case FILESW:
 213                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 214                     die("missing argument to %s", argp[-2]);
 215                 file = *cp == '-' ? cp : path (cp, TFILE);
 216                 continue;
 217
 218             case FORMSW:
 219                 if (!(cp = *argp++) || *cp == '-')
 220                     die("missing argument to %s", argp[-2]);
 221                 free(formsw);
 222                 formsw = mh_xstrdup(etcpath(cp));
 223                 continue;
 224
 225             case HEADSW:
 226                 headersw = 1;
 227                 continue;
 228             case NHEADSW:
 229                 headersw = 0;
 230                 continue;
 231
 232             case HEADFORMSW:
 233                 if (!(headerform = *argp++) || *headerform == '-')
 234                     die("missing argument to %s", argp[-2]);
 235                 continue;
 236
 237             case MARKFORMSW:
 238                 if (!(markerform = *argp++) || *markerform == '-')
 239                     die("missing argument to %s", argp[-2]);
 240                 continue;
 241
 242             /*
 243              * Switches for moreproc/mhlproc
 244              */
 245             case PROGSW:
 246                 if (!(progsw = *argp++) || *progsw == '-')
 247                     die("missing argument to %s", argp[-2]);
 248                 continue;
 249             case NPROGSW:
 250                 nomore++;
 251                 continue;
 252
 253             case LENSW:
 254             case WIDTHSW:
 255                 if (!(cp = *argp++) || *cp == '-')
 256                     die("missing argument to %s", argp[-2]);
 257                 continue;
 258
 259             case VERBSW:
 260                 verbosw = 1;
 261                 continue;
 262             case NVERBSW:
 263                 verbosw = 0;
 264                 continue;
 265             case DEBUGSW:
 266                 debugsw = 1;
 267                 continue;
 268             }
 269         }
 270         if (*cp == '+' || *cp == '@') {
 271             if (folder)
 272                 die("only one folder at a time!");
 273             folder = pluspath (cp);
 274         } else
 275                 app_msgarg(&msgs, cp);
 276     }
 277
 278     /* null terminate the list of acceptable parts/types */
 279     parts[npart] = NULL;
 280     types[ntype] = NULL;
 281
 282     /*
 283      * If we had any specific parts or types specified, turn off text only
 284      * content.
 285      */
 286
 287     if (npart > 0 || ntype > 0) {
 288         if (textonly == -1)
 289             textonly = 0;
 290         if (inlineonly == -1)
 291             inlineonly = 0;
 292     }
 293
 294     /*
 295      * Check if we've specified an additional profile
 296      */
 297     if ((cp = getenv ("MHSHOW"))) {
 298         if ((fp = fopen (cp, "r"))) {
 299             readconfig(NULL, fp, cp, 0);
 300             fclose (fp);
 301         } else {
 302             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 303         }
 304     }
 305
 306     /*
 307      * Read the standard profile setup
 308      */
 309     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 310         readconfig(NULL, fp, cp, 0);
 311         fclose (fp);
 312     }
 313
 314     /* Check for public cache location */
 315     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 316         cache_public = NULL;
 317
 318     /* Check for private cache location */
 319     if (!(cache_private = context_find (nmhprivcache)))
 320         cache_private = ".cache";
 321     cache_private = mh_xstrdup(m_maildir(cache_private));
 322
 323     if (!context_find ("path"))
 324         free (path ("./", TFOLDER));
 325
 326     if (file && msgs.size)
 327         die("cannot specify msg and file at same time!");
 328
 329     /*
 330      * check if message is coming from file
 331      */
 332     if (file) {
 333         cts = mh_xcalloc(2, sizeof *cts);
 334         ctp = cts;
 335
 336         if ((ct = parse_mime (file)))
 337             *ctp++ = ct;
 338
 339         headersw = 0;
 340     } else {
 341         /*
 342          * message(s) are coming from a folder
 343          */
 344         if (!msgs.size)
 345             app_msgarg(&msgs, "cur");
 346         if (!folder)
 347             folder = getfolder (1);
 348         maildir = m_maildir (folder);
 349
 350         if (chdir (maildir) == NOTOK)
 351             adios (maildir, "unable to change directory to");
 352
 353         /* read folder and create message structure */
 354         if (!(mp = folder_read (folder, 1)))
 355             die("unable to read folder %s", folder);
 356
 357         /* check for empty folder */
 358         if (mp->nummsg == 0)
 359             die("no messages in %s", folder);
 360
 361         /* parse all the message ranges/sequences and set SELECTED */
 362         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 363             if (!m_convert (mp, msgs.msgs[msgnum]))
 364                 done (1);
 365
 366         /*
 367          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 368          * since we will use that as a tag to know which messages
 369          * to remove from the "unseen" sequence.
 370          */
 371         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 372             if (is_selected(mp, msgnum))
 373                 set_unseen (mp, msgnum);
 374
 375         seq_setprev (mp);       /* set the Previous-Sequence */
 376         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 377
 378         cts = mh_xcalloc(mp->numsel + 1, sizeof *cts);
 379         ctp = cts;
 380
 381         /*
 382          * Parse all the SELECTED messages.
 383          */
 384         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 385             if (is_selected(mp, msgnum)) {
 386                 char *msgnam;
 387
 388                 msgnam = m_name (msgnum);
 389                 if ((ct = parse_mime (msgnam)))
 390                     *ctp++ = ct;
 391             }
 392         }
 393     }
 394
 395     if (!*cts)
 396         done (1);
 397
 398     userrs = true;
 399     SIGNAL (SIGQUIT, quitser);
 400     SIGNAL (SIGPIPE, pipeser);
 401
 402     /*
 403      * Get the associated umask for the relevant contents.
 404      */
 405     for (ctp = cts; *ctp; ctp++) {
 406         struct stat st;
 407
 408         ct = *ctp;
 409         if (type_ok (ct, 1) && !ct->c_umask) {
 410             if (stat (ct->c_file, &st) != NOTOK)
 411                 ct->c_umask = ~(st.st_mode & 0777);
 412             else
 413                 ct->c_umask = ~m_gmprot();
 414         }
 415     }
 416
 417     /* If reading from a folder, do some updating */
 418     if (mp) {
 419         context_replace (pfolder, folder);/* update current folder  */
 420         seq_setcur (mp, mp->hghsel);      /* update current message */
 421         seq_save (mp);                    /* synchronize sequences  */
 422         context_save ();                  /* save the context file  */
 423     }
 424
 425     if (concatsw)
 426         m_popen(moreproc, 0);
 427
 428     /*
 429      * Show the message content
 430      */
 431     show_all_messages (cts, concatsw, textonly, inlineonly);
 432
 433     /* Now free all the structures for the content */
 434     for (ctp = cts; *ctp; ctp++)
 435         free_content (*ctp);
 436
 437     free(cts);
 438     cts = NULL;
 439
 440     if (concatsw)
 441         m_pclose();
 442
 443     done (0);
 444     return 1;
 445 }
 446
 447
 448 static void
 449 pipeser (int i)
 450 {
 451     if (i == SIGQUIT) {
 452         fflush (stdout);
 453         fprintf (stderr, "\n");
 454         fflush (stderr);
 455     }
 456
 457     done (1);
 458     /* NOTREACHED */
 459 }