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