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