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