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