diplodocus.org Git - nmh/blob - uip/mhshow.c

   1
   2 /*
   3  * mhshow.c -- display the contents of MIME messages
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <fcntl.h>
  12 #include <h/signals.h>
  13 #include <h/md5.h>
  14 #include <h/mts.h>
  15 #include <h/tws.h>
  16 #include <h/mime.h>
  17 #include <h/mhparse.h>
  18 #include <h/mhcachesbr.h>
  19 #include <h/utils.h>
  20
  21 #define MHSHOW_SWITCHES \
  22     X("check", 0, CHECKSW) \
  23     X("nocheck", 0, NCHECKSW) \
  24     X("verbose", 0, VERBSW) \
  25     X("noverbose", 0, NVERBSW) \
  26     X("concat", 0, CONCATSW) \
  27     X("noconcat", 0, NCONCATSW) \
  28     X("textonly", 0, TEXTONLYSW) \
  29     X("notextonly", 0, NTEXTONLYSW) \
  30     X("inlineonly", 0, INLINESW) \
  31     X("noinlineonly", 0, NINLINESW) \
  32     X("file file", 0, FILESW) \
  33     X("form formfile", 0, FORMSW) \
  34     X("header", 0, HEADSW) \
  35     X("noheader", 0, NHEADSW) \
  36     X("headerform formfile", 0, HEADFORMSW) \
  37     X("markform formfile", 0, MARKFORMSW) \
  38     X("part number", 0, PARTSW) \
  39     X("type content", 0, TYPESW) \
  40     X("prefer content", 0, PREFERSW) \
  41     X("rcache policy", 0, RCACHESW) \
  42     X("wcache policy", 0, WCACHESW) \
  43     X("version", 0, VERSIONSW) \
  44     X("help", 0, HELPSW) \
  45     /*                                  \
  46      * switches for moreproc/mhlproc    \
  47      */                                 \
  48     X("moreproc program", -4, PROGSW) \
  49     X("nomoreproc", -3, NPROGSW) \
  50     X("length lines", -4, LENSW) \
  51     X("width columns", -4, WIDTHSW) \
  52     /*                          \
  53      * switches for debugging   \
  54      */                         \
  55     X("debug", -5, DEBUGSW) \
  56
  57 #define X(sw, minchars, id) id,
  58 DEFINE_SWITCH_ENUM(MHSHOW);
  59 #undef X
  60
  61 #define X(sw, minchars, id) { sw, minchars, id },
  62 DEFINE_SWITCH_ARRAY(MHSHOW, switches);
  63 #undef X
  64
  65
  66 /* mhcachesbr.c */
  67 extern int rcachesw;
  68 extern int wcachesw;
  69 extern char *cache_public;
  70 extern char *cache_private;
  71
  72 /* mhshowsbr.c */
  73 extern char *progsw;
  74 extern int nomore;      /* flags for moreproc/header display */
  75 extern char *formsw;
  76 extern char *folder;
  77 extern char *headerform;
  78 extern char *markerform;
  79 extern int headersw;
  80
  81 /* mhmisc.c */
  82 extern int npart;
  83 extern int ntype;
  84 extern char *parts[NPARTS + 1];
  85 extern char *types[NTYPES + 1];
  86 extern int userrs;
  87
  88 /* mhparse.c */
  89 extern char *preferred_types[];
  90 extern  char *preferred_subtypes[];
  91 extern int npreferred;
  92
  93 int debugsw = 0;
  94 int verbosw = 0;
  95
  96 #define quitser pipeser
  97
  98 /* mhparse.c */
  99 CT parse_mime (char *);
 100
 101 /* mhmisc.c */
 102 int part_ok (CT);
 103 int type_ok (CT, int);
 104 void flush_errors (void);
 105
 106 /* mhfree.c */
 107 extern CT *cts;
 108 void freects_done (int) NORETURN;
 109
 110 /*
 111  * static prototypes
 112  */
 113 static void pipeser (int);
 114
 115
 116 int
 117 main (int argc, char **argv)
 118 {
 119     int msgnum, *icachesw, concatsw = -1, textonly = -1, inlineonly = -1;
 120     char *cp, *file = NULL;
 121     char *maildir, buf[100], **argp;
 122     char **arguments;
 123     struct msgs_array msgs = { 0, 0, NULL };
 124     struct msgs *mp = NULL;
 125     CT ct, *ctp;
 126     FILE *fp;
 127
 128     if (nmh_init(argv[0], 1)) { return 1; }
 129
 130     done=freects_done;
 131
 132     arguments = getarguments (invo_name, argc, argv, 1);
 133     argp = arguments;
 134
 135     /*
 136      * Parse arguments
 137      */
 138     while ((cp = *argp++)) {
 139         if (*cp == '-') {
 140             switch (smatch (++cp, switches)) {
 141             case AMBIGSW:
 142                 ambigsw (cp, switches);
 143                 done (1);
 144             case UNKWNSW:
 145                 adios (NULL, "-%s unknown", cp);
 146
 147             case HELPSW:
 148                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 149                         invo_name);
 150                 print_help (buf, switches, 1);
 151                 done (0);
 152             case VERSIONSW:
 153                 print_version(invo_name);
 154                 done (0);
 155
 156             case RCACHESW:
 157                 icachesw = &rcachesw;
 158                 goto do_cache;
 159             case WCACHESW:
 160                 icachesw = &wcachesw;
 161 do_cache:
 162                 if (!(cp = *argp++) || *cp == '-')
 163                     adios (NULL, "missing argument to %s", argp[-2]);
 164                 switch (*icachesw = smatch (cp, caches)) {
 165                 case AMBIGSW:
 166                     ambigsw (cp, caches);
 167                     done (1);
 168                 case UNKWNSW:
 169                     adios (NULL, "%s unknown", cp);
 170                 default:
 171                     break;
 172                 }
 173                 continue;
 174
 175             case CHECKSW:
 176                 checksw++;
 177                 continue;
 178             case NCHECKSW:
 179                 checksw = 0;
 180                 continue;
 181
 182             case CONCATSW:
 183                 concatsw = 1;
 184                 continue;
 185             case NCONCATSW:
 186                 concatsw = 0;
 187                 continue;
 188             case TEXTONLYSW:
 189                 textonly = 1;
 190                 continue;
 191             case NTEXTONLYSW:
 192                 textonly = 0;
 193                 continue;
 194             case INLINESW:
 195                 inlineonly = 1;
 196                 continue;
 197             case NINLINESW:
 198                 inlineonly = 0;
 199                 continue;
 200
 201             case PARTSW:
 202                 if (!(cp = *argp++) || *cp == '-')
 203                     adios (NULL, "missing argument to %s", argp[-2]);
 204                 if (npart >= NPARTS)
 205                     adios (NULL, "too many parts (starting with %s), %d max",
 206                            cp, NPARTS);
 207                 parts[npart++] = cp;
 208                 continue;
 209
 210             case TYPESW:
 211                 if (!(cp = *argp++) || *cp == '-')
 212                     adios (NULL, "missing argument to %s", argp[-2]);
 213                 if (ntype >= NTYPES)
 214                     adios (NULL, "too many types (starting with %s), %d max",
 215                            cp, NTYPES);
 216                 types[ntype++] = cp;
 217                 continue;
 218
 219             case PREFERSW:
 220                 if (!(cp = *argp++) || *cp == '-')
 221                     adios (NULL, "missing argument to %s", argp[-2]);
 222                 if (npreferred >= NPREFS)
 223                     adios (NULL, "too many preferred types (starting with %s), %d max",
 224                            cp, NPREFS);
 225                 preferred_types[npreferred] = cp;
 226                 cp = strchr(cp, '/');
 227                 if (cp) *cp++ = '\0';
 228                 preferred_subtypes[npreferred++] = cp;
 229                 continue;
 230
 231             case FILESW:
 232                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 233                     adios (NULL, "missing argument to %s", argp[-2]);
 234                 file = *cp == '-' ? cp : path (cp, TFILE);
 235                 continue;
 236
 237             case FORMSW:
 238                 if (!(cp = *argp++) || *cp == '-')
 239                     adios (NULL, "missing argument to %s", argp[-2]);
 240                 if (formsw)
 241                     free (formsw);
 242                 formsw = getcpy (etcpath (cp));
 243                 continue;
 244
 245             case HEADSW:
 246                 headersw = 1;
 247                 continue;
 248             case NHEADSW:
 249                 headersw = 0;
 250                 continue;
 251
 252             case HEADFORMSW:
 253                 if (!(headerform = *argp++) || *headerform == '-')
 254                     adios (NULL, "missing argument to %s", argp[-2]);
 255                 continue;
 256
 257             case MARKFORMSW:
 258                 if (!(markerform = *argp++) || *markerform == '-')
 259                     adios (NULL, "missing argument to %s", argp[-2]);
 260                 continue;
 261
 262             /*
 263              * Switches for moreproc/mhlproc
 264              */
 265             case PROGSW:
 266                 if (!(progsw = *argp++) || *progsw == '-')
 267                     adios (NULL, "missing argument to %s", argp[-2]);
 268                 continue;
 269             case NPROGSW:
 270                 nomore++;
 271                 continue;
 272
 273             case LENSW:
 274             case WIDTHSW:
 275                 if (!(cp = *argp++) || *cp == '-')
 276                     adios (NULL, "missing argument to %s", argp[-2]);
 277                 continue;
 278
 279             case VERBSW:
 280                 verbosw = 1;
 281                 continue;
 282             case NVERBSW:
 283                 verbosw = 0;
 284                 continue;
 285             case DEBUGSW:
 286                 debugsw = 1;
 287                 continue;
 288             }
 289         }
 290         if (*cp == '+' || *cp == '@') {
 291             if (folder)
 292                 adios (NULL, "only one folder at a time!");
 293             else
 294                 folder = pluspath (cp);
 295         } else
 296                 app_msgarg(&msgs, cp);
 297     }
 298
 299     /* null terminate the list of acceptable parts/types */
 300     parts[npart] = NULL;
 301     types[ntype] = NULL;
 302
 303     /*
 304      * If we had any specific parts or types specified, turn off text only
 305      * content.
 306      */
 307
 308     if (npart > 0 || ntype > 0) {
 309         if (textonly == -1)
 310             textonly = 0;
 311         if (inlineonly == -1)
 312             inlineonly = 0;
 313     }
 314
 315     /*
 316      * Check if we've specified an additional profile
 317      */
 318     if ((cp = getenv ("MHSHOW"))) {
 319         if ((fp = fopen (cp, "r"))) {
 320             readconfig ((struct node **) 0, fp, cp, 0);
 321             fclose (fp);
 322         } else {
 323             admonish ("", "unable to read $MHSHOW profile (%s)", cp);
 324         }
 325     }
 326
 327     /*
 328      * Read the standard profile setup
 329      */
 330     if ((fp = fopen (cp = etcpath ("mhn.defaults"), "r"))) {
 331         readconfig ((struct node **) 0, fp, cp, 0);
 332         fclose (fp);
 333     }
 334
 335     /* Check for public cache location */
 336     if ((cache_public = context_find (nmhcache)) && *cache_public != '/')
 337         cache_public = NULL;
 338
 339     /* Check for private cache location */
 340     if (!(cache_private = context_find (nmhprivcache)))
 341         cache_private = ".cache";
 342     cache_private = getcpy (m_maildir (cache_private));
 343
 344     if (!context_find ("path"))
 345         free (path ("./", TFOLDER));
 346
 347     if (file && msgs.size)
 348         adios (NULL, "cannot specify msg and file at same time!");
 349
 350     /*
 351      * check if message is coming from file
 352      */
 353     if (file) {
 354         if (!(cts = (CT *) mh_xcalloc ((size_t) 2, sizeof(*cts))))
 355             adios (NULL, "out of memory");
 356         ctp = cts;
 357
 358         if ((ct = parse_mime (file)))
 359             *ctp++ = ct;
 360
 361         headersw = 0;
 362     } else {
 363         /*
 364          * message(s) are coming from a folder
 365          */
 366         if (!msgs.size)
 367             app_msgarg(&msgs, "cur");
 368         if (!folder)
 369             folder = getfolder (1);
 370         maildir = m_maildir (folder);
 371
 372         if (chdir (maildir) == NOTOK)
 373             adios (maildir, "unable to change directory to");
 374
 375         /* read folder and create message structure */
 376         if (!(mp = folder_read (folder, 1)))
 377             adios (NULL, "unable to read folder %s", folder);
 378
 379         /* check for empty folder */
 380         if (mp->nummsg == 0)
 381             adios (NULL, "no messages in %s", folder);
 382
 383         /* parse all the message ranges/sequences and set SELECTED */
 384         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 385             if (!m_convert (mp, msgs.msgs[msgnum]))
 386                 done (1);
 387
 388         /*
 389          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 390          * since we will use that as a tag to know which messages
 391          * to remove from the "unseen" sequence.
 392          */
 393         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 394             if (is_selected(mp, msgnum))
 395                 set_unseen (mp, msgnum);
 396
 397         seq_setprev (mp);       /* set the Previous-Sequence */
 398         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 399
 400         if (!(cts = (CT *) mh_xcalloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 401             adios (NULL, "out of memory");
 402         ctp = cts;
 403
 404         /*
 405          * Parse all the SELECTED messages.
 406          */
 407         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 408             if (is_selected(mp, msgnum)) {
 409                 char *msgnam;
 410
 411                 msgnam = m_name (msgnum);
 412                 if ((ct = parse_mime (msgnam)))
 413                     *ctp++ = ct;
 414             }
 415         }
 416     }
 417
 418     if (!*cts)
 419         done (1);
 420
 421     userrs = 1;
 422     SIGNAL (SIGQUIT, quitser);
 423     SIGNAL (SIGPIPE, pipeser);
 424
 425     /*
 426      * Get the associated umask for the relevant contents.
 427      */
 428     for (ctp = cts; *ctp; ctp++) {
 429         struct stat st;
 430
 431         ct = *ctp;
 432         if (type_ok (ct, 1) && !ct->c_umask) {
 433             if (stat (ct->c_file, &st) != NOTOK)
 434                 ct->c_umask = ~(st.st_mode & 0777);
 435             else
 436                 ct->c_umask = ~m_gmprot();
 437         }
 438     }
 439
 440     /* If reading from a folder, do some updating */
 441     if (mp) {
 442         context_replace (pfolder, folder);/* update current folder  */
 443         seq_setcur (mp, mp->hghsel);      /* update current message */
 444         seq_save (mp);                    /* synchronize sequences  */
 445         context_save ();                  /* save the context file  */
 446     }
 447
 448     if (concatsw)
 449         m_popen(moreproc, 0);
 450
 451     /*
 452      * Show the message content
 453      */
 454     show_all_messages (cts, concatsw, textonly, inlineonly);
 455
 456     /* Now free all the structures for the content */
 457     for (ctp = cts; *ctp; ctp++)
 458         free_content (*ctp);
 459
 460     free ((char *) cts);
 461     cts = NULL;
 462
 463     if (concatsw)
 464         m_pclose();
 465
 466     done (0);
 467     return 1;
 468 }
 469
 470
 471 static void
 472 pipeser (int i)
 473 {
 474     if (i == SIGQUIT) {
 475         fflush (stdout);
 476         fprintf (stderr, "\n");
 477         fflush (stderr);
 478     }
 479
 480     done (1);
 481     /* NOTREACHED */
 482 }