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_gmprot.h"
  10 #include "sbr/getarguments.h"
  11 #include "sbr/seq_setunseen.h"
  12 #include "sbr/seq_setprev.h"
  13 #include "sbr/seq_setcur.h"
  14 #include "sbr/seq_save.h"
  15 #include "sbr/smatch.h"
  16 #include "sbr/m_convert.h"
  17 #include "sbr/getfolder.h"
  18 #include "sbr/folder_read.h"
  19 #include "sbr/context_save.h"
  20 #include "sbr/context_replace.h"
  21 #include "sbr/context_find.h"
  22 #include "sbr/readconfig.h"
  23 #include "sbr/ambigsw.h"
  24 #include "sbr/path.h"
  25 #include "sbr/print_version.h"
  26 #include "sbr/print_help.h"
  27 #include "sbr/error.h"
  28 #include <fcntl.h>
  29 #include "h/signals.h"
  30 #include "h/md5.h"
  31 #include "h/mts.h"
  32 #include "h/tws.h"
  33 #include "h/fmt_scan.h"
  34 #include "h/mime.h"
  35 #include "h/mhparse.h"
  36 #include "h/mhcachesbr.h"
  37 #include "h/done.h"
  38 #include "h/utils.h"
  39 #include "mhmisc.h"
  40 #include "sbr/m_maildir.h"
  41 #include "sbr/m_popen.h"
  42 #include "mhfree.h"
  43 #include "mhshowsbr.h"
  44
  45 #define MHSHOW_SWITCHES \
  46     X("check", 0, CHECKSW) \
  47     X("nocheck", 0, NCHECKSW) \
  48     X("verbose", 0, VERBSW) \
  49     X("noverbose", 0, NVERBSW) \
  50     X("concat", 0, CONCATSW) \
  51     X("noconcat", 0, NCONCATSW) \
  52     X("textonly", 0, TEXTONLYSW) \
  53     X("notextonly", 0, NTEXTONLYSW) \
  54     X("inlineonly", 0, INLINESW) \
  55     X("noinlineonly", 0, NINLINESW) \
  56     X("file file", 0, FILESW) \
  57     X("form formfile", 0, FORMSW) \
  58     X("header", 0, HEADSW) \
  59     X("noheader", 0, NHEADSW) \
  60     X("headerform formfile", 0, HEADFORMSW) \
  61     X("markform formfile", 0, MARKFORMSW) \
  62     X("part number", 0, PARTSW) \
  63     X("type content", 0, TYPESW) \
  64     X("prefer content", 0, PREFERSW) \
  65     X("noprefer", 0, NPREFERSW) \
  66     X("rcache policy", 0, RCACHESW) \
  67     X("wcache policy", 0, WCACHESW) \
  68     X("version", 0, VERSIONSW) \
  69     X("help", 0, HELPSW) \
  70     /*                                  \
  71      * switches for moreproc/mhlproc    \
  72      */                                 \
  73     X("moreproc program", -4, PROGSW) \
  74     X("nomoreproc", -3, NPROGSW) \
  75     X("length lines", -4, LENSW) \
  76     X("width columns", -4, WIDTHSW) \
  77     /*                          \
  78      * switches for debugging   \
  79      */                         \
  80     X("debug", -5, DEBUGSW) \
  81
  82 #define X(sw, minchars, id) id,
  83 DEFINE_SWITCH_ENUM(MHSHOW);
  84 #undef X
  85
  86 #define X(sw, minchars, id) { sw, minchars, id },
  87 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  88 #undef X
  89
  90
  91 int debugsw = 0;
  92 int verbosw = 0;
  93
  94 #define quitser pipeser
  95
  96 /*
  97  * static prototypes
  98  */
  99 static void pipeser (int);
 100
 101
 102 int
 103 main (int argc, char **argv)
 104 {
 105     int msgnum, *icachesw, concatsw = -1, textonly = -1, inlineonly = -1;
 106     char *cp, *file = NULL;
 107     char *maildir, buf[100], **argp;
 108     char **arguments;
 109     struct msgs_array msgs = { 0, 0, NULL };
 110     struct msgs *mp = NULL;
 111     CT ct, *ctp;
 112     FILE *fp;
 113
 114     if (nmh_init(argv[0], true, true)) { return 1; }
 115
 116     set_done(freects_done);
 117
 118     arguments = getarguments (invo_name, argc, argv, 1);
 119     argp = arguments;
 120
 121     /*
 122      * Parse arguments
 123      */
 124     while ((cp = *argp++)) {
 125         if (*cp == '-') {
 126             switch (smatch (++cp, switches)) {
 127             case AMBIGSW:
 128                 ambigsw (cp, switches);
 129                 done (1);
 130             case UNKWNSW:
 131                 die("-%s unknown", cp);
 132
 133             case HELPSW:
 134                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 135                         invo_name);
 136                 print_help (buf, switches, 1);
 137                 done (0);
 138             case VERSIONSW:
 139                 print_version(invo_name);
 140                 done (0);
 141
 142             case RCACHESW:
 143                 icachesw = &rcachesw;
 144                 goto do_cache;
 145             case WCACHESW:
 146                 icachesw = &wcachesw;
 147 do_cache:
 148                 if (!(cp = *argp++) || *cp == '-')
 149                     die("missing argument to %s", argp[-2]);
 150                 switch (*icachesw = smatch (cp, cache_policy)) {
 151                 case AMBIGSW:
 152                     ambigsw (cp, cache_policy);
 153                     done (1);
 154                 case UNKWNSW:
 155                     die("%s unknown", cp);
 156                 default:
 157                     break;
 158                 }
 159                 continue;
 160
 161             case CHECKSW:
 162                 checksw++;
 163                 continue;
 164             case NCHECKSW:
 165                 checksw = 0;
 166                 continue;
 167
 168             case CONCATSW:
 169                 concatsw = 1;
 170                 continue;
 171             case NCONCATSW:
 172                 concatsw = 0;
 173                 continue;
 174             case TEXTONLYSW:
 175                 textonly = 1;
 176                 continue;
 177             case NTEXTONLYSW:
 178                 textonly = 0;
 179                 continue;
 180             case INLINESW:
 181                 inlineonly = 1;
 182                 continue;
 183             case NINLINESW:
 184                 inlineonly = 0;
 185                 continue;
 186
 187             case PARTSW:
 188                 if (!(cp = *argp++) || *cp == '-')
 189                     die("missing argument to %s", argp[-2]);
 190                 if (npart >= NPARTS)
 191                     die("too many parts (starting with %s), %d max",
 192                            cp, NPARTS);
 193                 parts[npart++] = cp;
 194                 continue;
 195
 196             case TYPESW:
 197                 if (!(cp = *argp++) || *cp == '-')
 198                     die("missing argument to %s", argp[-2]);
 199                 if (ntype >= NTYPES)
 200                     die("too many types (starting with %s), %d max",
 201                            cp, NTYPES);
 202                 types[ntype++] = cp;
 203                 continue;
 204
 205             case PREFERSW:
 206                 if (!(cp = *argp++) || *cp == '-')
 207                     die("missing argument to %s", argp[-2]);
 208                 if (npreferred >= NPREFS)
 209                     die("too many preferred types (starting with %s), %d max",
 210                            cp, NPREFS);
 211                 mime_preference[npreferred].type = cp;
 212                 cp = strchr(cp, '/');
 213                 if (cp) *cp++ = '\0';
 214                 mime_preference[npreferred++].subtype = cp;
 215                 continue;
 216
 217             case NPREFERSW:
 218                 npreferred = 0;
 219                 continue;
 220
 221             case FILESW:
 222                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 223                     die("missing argument to %s", argp[-2]);
 224                 file = *cp == '-' ? cp : path (cp, TFILE);
 225                 continue;
 226
 227             case FORMSW:
 228                 if (!(cp = *argp++) || *cp == '-')
 229                     die("missing argument to %s", argp[-2]);
 230                 free(formsw);
 231                 formsw = mh_xstrdup(etcpath(cp));
 232                 continue;
 233
 234             case HEADSW:
 235                 headersw = 1;
 236                 continue;
 237             case NHEADSW:
 238                 headersw = 0;
 239                 continue;
 240
 241             case HEADFORMSW:
 242                 if (!(headerform = *argp++) || *headerform == '-')
 243                     die("missing argument to %s", argp[-2]);
 244                 continue;
 245
 246             case MARKFORMSW:
 247                 if (!(markerform = *argp++) || *markerform == '-')
 248                     die("missing argument to %s", argp[-2]);
 249                 continue;
 250
 251             /*
 252              * Switches for moreproc/mhlproc
 253              */
 254             case PROGSW:
 255                 if (!(progsw = *argp++) || *progsw == '-')
 256                     die("missing argument to %s", argp[-2]);
 257                 continue;
 258             case NPROGSW:
 259                 nomore++;
 260                 continue;
 261
 262             case LENSW:
 263             case WIDTHSW:
 264                 if (!(cp = *argp++) || *cp == '-')
 265                     die("missing argument to %s", argp[-2]);
 266                 continue;
 267
 268             case VERBSW:
 269                 verbosw = 1;
 270                 continue;
 271             case NVERBSW:
 272                 verbosw = 0;
 273                 continue;
 274             case DEBUGSW:
 275                 debugsw = 1;
 276                 continue;
 277             }
 278         }
 279         if (*cp == '+' || *cp == '@') {
 280             if (folder)
 281                 die("only one folder at a time!");
 282             folder = pluspath (cp);
 283         } else
 284                 app_msgarg(&msgs, cp);
 285     }
 286
 287     /* null terminate the list of acceptable parts/types */
 288     parts[npart] = NULL;
 289     types[ntype] = NULL;
 290
 291     /*
 292      * If we had any specific parts or types specified, turn off text only
 293      * content.
 294      */
 295
 296     if (npart > 0 || ntype > 0) {
 297         if (textonly == -1)
 298             textonly = 0;
 299         if (inlineonly == -1)
 300             inlineonly = 0;
 301     }
 302
 303     /*
 304      * Check if we've specified an additional profile
 305      */
 306     if ((cp = getenv ("MHSHOW"))) {
 307         if ((fp = fopen (cp, "r"))) {
 308             readconfig(NULL, fp, cp, 0);
 309             fclose (fp);
 310         } else {
 311             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 312         }
 313     }
 314
 315     /*
 316      * Read the standard profile setup
 317      */
 318     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 319         readconfig(NULL, fp, cp, 0);
 320         fclose (fp);
 321     }
 322
 323     /* Check for public cache location */
 324     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 325         cache_public = NULL;
 326
 327     /* Check for private cache location */
 328     if (!(cache_private = context_find (nmhprivcache)))
 329         cache_private = ".cache";
 330     cache_private = mh_xstrdup(m_maildir(cache_private));
 331
 332     if (!context_find ("path"))
 333         free (path ("./", TFOLDER));
 334
 335     if (file && msgs.size)
 336         die("cannot specify msg and file at same time!");
 337
 338     /*
 339      * check if message is coming from file
 340      */
 341     if (file) {
 342         cts = mh_xcalloc(2, sizeof *cts);
 343         ctp = cts;
 344
 345         if ((ct = parse_mime (file)))
 346             *ctp++ = ct;
 347
 348         headersw = 0;
 349     } else {
 350         /*
 351          * message(s) are coming from a folder
 352          */
 353         if (!msgs.size)
 354             app_msgarg(&msgs, "cur");
 355         if (!folder)
 356             folder = getfolder (1);
 357         maildir = m_maildir (folder);
 358
 359         if (chdir (maildir) == NOTOK)
 360             adios (maildir, "unable to change directory to");
 361
 362         /* read folder and create message structure */
 363         if (!(mp = folder_read (folder, 1)))
 364             die("unable to read folder %s", folder);
 365
 366         /* check for empty folder */
 367         if (mp->nummsg == 0)
 368             die("no messages in %s", folder);
 369
 370         /* parse all the message ranges/sequences and set SELECTED */
 371         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 372             if (!m_convert (mp, msgs.msgs[msgnum]))
 373                 done (1);
 374
 375         /*
 376          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 377          * since we will use that as a tag to know which messages
 378          * to remove from the "unseen" sequence.
 379          */
 380         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 381             if (is_selected(mp, msgnum))
 382                 set_unseen (mp, msgnum);
 383
 384         seq_setprev (mp);       /* set the Previous-Sequence */
 385         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 386
 387         cts = mh_xcalloc(mp->numsel + 1, sizeof *cts);
 388         ctp = cts;
 389
 390         /*
 391          * Parse all the SELECTED messages.
 392          */
 393         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 394             if (is_selected(mp, msgnum)) {
 395                 char *msgnam;
 396
 397                 msgnam = m_name (msgnum);
 398                 if ((ct = parse_mime (msgnam)))
 399                     *ctp++ = ct;
 400             }
 401         }
 402     }
 403
 404     if (!*cts)
 405         done (1);
 406
 407     userrs = true;
 408     SIGNAL (SIGQUIT, quitser);
 409     SIGNAL (SIGPIPE, pipeser);
 410
 411     /*
 412      * Get the associated umask for the relevant contents.
 413      */
 414     for (ctp = cts; *ctp; ctp++) {
 415         struct stat st;
 416
 417         ct = *ctp;
 418         if (type_ok (ct, 1) && !ct->c_umask) {
 419             if (stat (ct->c_file, &st) != NOTOK)
 420                 ct->c_umask = ~(st.st_mode & 0777);
 421             else
 422                 ct->c_umask = ~m_gmprot();
 423         }
 424     }
 425
 426     /* If reading from a folder, do some updating */
 427     if (mp) {
 428         context_replace (pfolder, folder);/* update current folder  */
 429         seq_setcur (mp, mp->hghsel);      /* update current message */
 430         seq_save (mp);                    /* synchronize sequences  */
 431         context_save ();                  /* save the context file  */
 432     }
 433
 434     if (concatsw)
 435         m_popen(moreproc, 0);
 436
 437     /*
 438      * Show the message content
 439      */
 440     show_all_messages (cts, concatsw, textonly, inlineonly);
 441
 442     /* Now free all the structures for the content */
 443     for (ctp = cts; *ctp; ctp++)
 444         free_content (*ctp);
 445
 446     free(cts);
 447     cts = NULL;
 448
 449     if (concatsw)
 450         m_pclose();
 451
 452     done (0);
 453     return 1;
 454 }
 455
 456
 457 static void
 458 pipeser (int i)
 459 {
 460     if (i == SIGQUIT) {
 461         fflush (stdout);
 462         fprintf (stderr, "\n");
 463         fflush (stderr);
 464     }
 465
 466     done (1);
 467     /* NOTREACHED */
 468 }