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/m_convert.h"
  10 #include "sbr/getfolder.h"
  11 #include "sbr/folder_read.h"
  12 #include "sbr/context_save.h"
  13 #include "sbr/context_replace.h"
  14 #include "sbr/context_find.h"
  15 #include "sbr/readconfig.h"
  16 #include "sbr/ambigsw.h"
  17 #include "sbr/path.h"
  18 #include "sbr/print_version.h"
  19 #include "sbr/print_help.h"
  20 #include "sbr/error.h"
  21 #include <fcntl.h>
  22 #include "h/signals.h"
  23 #include "h/md5.h"
  24 #include "h/mts.h"
  25 #include "h/tws.h"
  26 #include "h/fmt_scan.h"
  27 #include "h/mime.h"
  28 #include "h/mhparse.h"
  29 #include "h/mhcachesbr.h"
  30 #include "h/done.h"
  31 #include "h/utils.h"
  32 #include "mhmisc.h"
  33 #include "sbr/m_maildir.h"
  34 #include "sbr/m_popen.h"
  35 #include "mhfree.h"
  36 #include "mhshowsbr.h"
  37
  38 #define MHSHOW_SWITCHES \
  39     X("check", 0, CHECKSW) \
  40     X("nocheck", 0, NCHECKSW) \
  41     X("verbose", 0, VERBSW) \
  42     X("noverbose", 0, NVERBSW) \
  43     X("concat", 0, CONCATSW) \
  44     X("noconcat", 0, NCONCATSW) \
  45     X("textonly", 0, TEXTONLYSW) \
  46     X("notextonly", 0, NTEXTONLYSW) \
  47     X("inlineonly", 0, INLINESW) \
  48     X("noinlineonly", 0, NINLINESW) \
  49     X("file file", 0, FILESW) \
  50     X("form formfile", 0, FORMSW) \
  51     X("header", 0, HEADSW) \
  52     X("noheader", 0, NHEADSW) \
  53     X("headerform formfile", 0, HEADFORMSW) \
  54     X("markform formfile", 0, MARKFORMSW) \
  55     X("part number", 0, PARTSW) \
  56     X("type content", 0, TYPESW) \
  57     X("prefer content", 0, PREFERSW) \
  58     X("noprefer", 0, NPREFERSW) \
  59     X("rcache policy", 0, RCACHESW) \
  60     X("wcache policy", 0, WCACHESW) \
  61     X("version", 0, VERSIONSW) \
  62     X("help", 0, HELPSW) \
  63     /*                                  \
  64      * switches for moreproc/mhlproc    \
  65      */                                 \
  66     X("moreproc program", -4, PROGSW) \
  67     X("nomoreproc", -3, NPROGSW) \
  68     X("length lines", -4, LENSW) \
  69     X("width columns", -4, WIDTHSW) \
  70     /*                          \
  71      * switches for debugging   \
  72      */                         \
  73     X("debug", -5, DEBUGSW) \
  74
  75 #define X(sw, minchars, id) id,
  76 DEFINE_SWITCH_ENUM(MHSHOW);
  77 #undef X
  78
  79 #define X(sw, minchars, id) { sw, minchars, id },
  80 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  81 #undef X
  82
  83
  84 int debugsw = 0;
  85 int verbosw = 0;
  86
  87 #define quitser pipeser
  88
  89 /*
  90  * static prototypes
  91  */
  92 static void pipeser (int);
  93
  94
  95 int
  96 main (int argc, char **argv)
  97 {
  98     int msgnum, *icachesw, concatsw = -1, textonly = -1, inlineonly = -1;
  99     char *cp, *file = NULL;
 100     char *maildir, buf[100], **argp;
 101     char **arguments;
 102     struct msgs_array msgs = { 0, 0, NULL };
 103     struct msgs *mp = NULL;
 104     CT ct, *ctp;
 105     FILE *fp;
 106
 107     if (nmh_init(argv[0], true, true)) { return 1; }
 108
 109     set_done(freects_done);
 110
 111     arguments = getarguments (invo_name, argc, argv, 1);
 112     argp = arguments;
 113
 114     /*
 115      * Parse arguments
 116      */
 117     while ((cp = *argp++)) {
 118         if (*cp == '-') {
 119             switch (smatch (++cp, switches)) {
 120             case AMBIGSW:
 121                 ambigsw (cp, switches);
 122                 done (1);
 123             case UNKWNSW:
 124                 die("-%s unknown", cp);
 125
 126             case HELPSW:
 127                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 128                         invo_name);
 129                 print_help (buf, switches, 1);
 130                 done (0);
 131             case VERSIONSW:
 132                 print_version(invo_name);
 133                 done (0);
 134
 135             case RCACHESW:
 136                 icachesw = &rcachesw;
 137                 goto do_cache;
 138             case WCACHESW:
 139                 icachesw = &wcachesw;
 140 do_cache:
 141                 if (!(cp = *argp++) || *cp == '-')
 142                     die("missing argument to %s", argp[-2]);
 143                 switch (*icachesw = smatch (cp, cache_policy)) {
 144                 case AMBIGSW:
 145                     ambigsw (cp, cache_policy);
 146                     done (1);
 147                 case UNKWNSW:
 148                     die("%s unknown", cp);
 149                 default:
 150                     break;
 151                 }
 152                 continue;
 153
 154             case CHECKSW:
 155                 checksw++;
 156                 continue;
 157             case NCHECKSW:
 158                 checksw = 0;
 159                 continue;
 160
 161             case CONCATSW:
 162                 concatsw = 1;
 163                 continue;
 164             case NCONCATSW:
 165                 concatsw = 0;
 166                 continue;
 167             case TEXTONLYSW:
 168                 textonly = 1;
 169                 continue;
 170             case NTEXTONLYSW:
 171                 textonly = 0;
 172                 continue;
 173             case INLINESW:
 174                 inlineonly = 1;
 175                 continue;
 176             case NINLINESW:
 177                 inlineonly = 0;
 178                 continue;
 179
 180             case PARTSW:
 181                 if (!(cp = *argp++) || *cp == '-')
 182                     die("missing argument to %s", argp[-2]);
 183                 if (npart >= NPARTS)
 184                     die("too many parts (starting with %s), %d max",
 185                            cp, NPARTS);
 186                 parts[npart++] = cp;
 187                 continue;
 188
 189             case TYPESW:
 190                 if (!(cp = *argp++) || *cp == '-')
 191                     die("missing argument to %s", argp[-2]);
 192                 if (ntype >= NTYPES)
 193                     die("too many types (starting with %s), %d max",
 194                            cp, NTYPES);
 195                 types[ntype++] = cp;
 196                 continue;
 197
 198             case PREFERSW:
 199                 if (!(cp = *argp++) || *cp == '-')
 200                     die("missing argument to %s", argp[-2]);
 201                 if (npreferred >= NPREFS)
 202                     die("too many preferred types (starting with %s), %d max",
 203                            cp, NPREFS);
 204                 mime_preference[npreferred].type = cp;
 205                 cp = strchr(cp, '/');
 206                 if (cp) *cp++ = '\0';
 207                 mime_preference[npreferred++].subtype = cp;
 208                 continue;
 209
 210             case NPREFERSW:
 211                 npreferred = 0;
 212                 continue;
 213
 214             case FILESW:
 215                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 216                     die("missing argument to %s", argp[-2]);
 217                 file = *cp == '-' ? cp : path (cp, TFILE);
 218                 continue;
 219
 220             case FORMSW:
 221                 if (!(cp = *argp++) || *cp == '-')
 222                     die("missing argument to %s", argp[-2]);
 223                 free(formsw);
 224                 formsw = mh_xstrdup(etcpath(cp));
 225                 continue;
 226
 227             case HEADSW:
 228                 headersw = 1;
 229                 continue;
 230             case NHEADSW:
 231                 headersw = 0;
 232                 continue;
 233
 234             case HEADFORMSW:
 235                 if (!(headerform = *argp++) || *headerform == '-')
 236                     die("missing argument to %s", argp[-2]);
 237                 continue;
 238
 239             case MARKFORMSW:
 240                 if (!(markerform = *argp++) || *markerform == '-')
 241                     die("missing argument to %s", argp[-2]);
 242                 continue;
 243
 244             /*
 245              * Switches for moreproc/mhlproc
 246              */
 247             case PROGSW:
 248                 if (!(progsw = *argp++) || *progsw == '-')
 249                     die("missing argument to %s", argp[-2]);
 250                 continue;
 251             case NPROGSW:
 252                 nomore++;
 253                 continue;
 254
 255             case LENSW:
 256             case WIDTHSW:
 257                 if (!(cp = *argp++) || *cp == '-')
 258                     die("missing argument to %s", argp[-2]);
 259                 continue;
 260
 261             case VERBSW:
 262                 verbosw = 1;
 263                 continue;
 264             case NVERBSW:
 265                 verbosw = 0;
 266                 continue;
 267             case DEBUGSW:
 268                 debugsw = 1;
 269                 continue;
 270             }
 271         }
 272         if (*cp == '+' || *cp == '@') {
 273             if (folder)
 274                 die("only one folder at a time!");
 275             folder = pluspath (cp);
 276         } else
 277                 app_msgarg(&msgs, cp);
 278     }
 279
 280     /* null terminate the list of acceptable parts/types */
 281     parts[npart] = NULL;
 282     types[ntype] = NULL;
 283
 284     /*
 285      * If we had any specific parts or types specified, turn off text only
 286      * content.
 287      */
 288
 289     if (npart > 0 || ntype > 0) {
 290         if (textonly == -1)
 291             textonly = 0;
 292         if (inlineonly == -1)
 293             inlineonly = 0;
 294     }
 295
 296     /*
 297      * Check if we've specified an additional profile
 298      */
 299     if ((cp = getenv ("MHSHOW"))) {
 300         if ((fp = fopen (cp, "r"))) {
 301             readconfig(NULL, fp, cp, 0);
 302             fclose (fp);
 303         } else {
 304             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 305         }
 306     }
 307
 308     /*
 309      * Read the standard profile setup
 310      */
 311     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 312         readconfig(NULL, fp, cp, 0);
 313         fclose (fp);
 314     }
 315
 316     /* Check for public cache location */
 317     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 318         cache_public = NULL;
 319
 320     /* Check for private cache location */
 321     if (!(cache_private = context_find (nmhprivcache)))
 322         cache_private = ".cache";
 323     cache_private = mh_xstrdup(m_maildir(cache_private));
 324
 325     if (!context_find ("path"))
 326         free (path ("./", TFOLDER));
 327
 328     if (file && msgs.size)
 329         die("cannot specify msg and file at same time!");
 330
 331     /*
 332      * check if message is coming from file
 333      */
 334     if (file) {
 335         cts = mh_xcalloc(2, sizeof *cts);
 336         ctp = cts;
 337
 338         if ((ct = parse_mime (file)))
 339             *ctp++ = ct;
 340
 341         headersw = 0;
 342     } else {
 343         /*
 344          * message(s) are coming from a folder
 345          */
 346         if (!msgs.size)
 347             app_msgarg(&msgs, "cur");
 348         if (!folder)
 349             folder = getfolder (1);
 350         maildir = m_maildir (folder);
 351
 352         if (chdir (maildir) == NOTOK)
 353             adios (maildir, "unable to change directory to");
 354
 355         /* read folder and create message structure */
 356         if (!(mp = folder_read (folder, 1)))
 357             die("unable to read folder %s", folder);
 358
 359         /* check for empty folder */
 360         if (mp->nummsg == 0)
 361             die("no messages in %s", folder);
 362
 363         /* parse all the message ranges/sequences and set SELECTED */
 364         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 365             if (!m_convert (mp, msgs.msgs[msgnum]))
 366                 done (1);
 367
 368         /*
 369          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 370          * since we will use that as a tag to know which messages
 371          * to remove from the "unseen" sequence.
 372          */
 373         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 374             if (is_selected(mp, msgnum))
 375                 set_unseen (mp, msgnum);
 376
 377         seq_setprev (mp);       /* set the Previous-Sequence */
 378         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 379
 380         cts = mh_xcalloc(mp->numsel + 1, sizeof *cts);
 381         ctp = cts;
 382
 383         /*
 384          * Parse all the SELECTED messages.
 385          */
 386         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 387             if (is_selected(mp, msgnum)) {
 388                 char *msgnam;
 389
 390                 msgnam = m_name (msgnum);
 391                 if ((ct = parse_mime (msgnam)))
 392                     *ctp++ = ct;
 393             }
 394         }
 395     }
 396
 397     if (!*cts)
 398         done (1);
 399
 400     userrs = true;
 401     SIGNAL (SIGQUIT, quitser);
 402     SIGNAL (SIGPIPE, pipeser);
 403
 404     /*
 405      * Get the associated umask for the relevant contents.
 406      */
 407     for (ctp = cts; *ctp; ctp++) {
 408         struct stat st;
 409
 410         ct = *ctp;
 411         if (type_ok (ct, 1) && !ct->c_umask) {
 412             if (stat (ct->c_file, &st) != NOTOK)
 413                 ct->c_umask = ~(st.st_mode & 0777);
 414             else
 415                 ct->c_umask = ~m_gmprot();
 416         }
 417     }
 418
 419     /* If reading from a folder, do some updating */
 420     if (mp) {
 421         context_replace (pfolder, folder);/* update current folder  */
 422         seq_setcur (mp, mp->hghsel);      /* update current message */
 423         seq_save (mp);                    /* synchronize sequences  */
 424         context_save ();                  /* save the context file  */
 425     }
 426
 427     if (concatsw)
 428         m_popen(moreproc, 0);
 429
 430     /*
 431      * Show the message content
 432      */
 433     show_all_messages (cts, concatsw, textonly, inlineonly);
 434
 435     /* Now free all the structures for the content */
 436     for (ctp = cts; *ctp; ctp++)
 437         free_content (*ctp);
 438
 439     free(cts);
 440     cts = NULL;
 441
 442     if (concatsw)
 443         m_pclose();
 444
 445     done (0);
 446     return 1;
 447 }
 448
 449
 450 static void
 451 pipeser (int i)
 452 {
 453     if (i == SIGQUIT) {
 454         fflush (stdout);
 455         fprintf (stderr, "\n");
 456         fflush (stderr);
 457     }
 458
 459     done (1);
 460     /* NOTREACHED */
 461 }