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