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

   1
   2 /*
   3  * mhshow.c -- display the contents of MIME messages
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13 #include <fcntl.h>
  14 #include <h/signals.h>
  15 #include <h/md5.h>
  16 #include <errno.h>
  17 #include <signal.h>
  18 #include <h/mts.h>
  19 #include <h/tws.h>
  20 #include <h/mime.h>
  21 #include <h/mhparse.h>
  22 #include <h/mhcachesbr.h>
  23 #include <h/utils.h>
  24
  25 #ifdef HAVE_SYS_WAIT_H
  26 # include <sys/wait.h>
  27 #endif
  28
  29 static struct swit switches[] = {
  30 #define CHECKSW                 0
  31     { "check", 0 },
  32 #define NCHECKSW                1
  33     { "nocheck", 0 },
  34 #define PAUSESW                 2
  35     { "pause", 0 },
  36 #define NPAUSESW                3
  37     { "nopause", 0 },
  38 #define SERIALSW                4
  39     { "serialonly", 0 },
  40 #define NSERIALSW               5
  41     { "noserialonly", 0 },
  42 #define VERBSW                  6
  43     { "verbose", 0 },
  44 #define NVERBSW                 7
  45     { "noverbose", 0 },
  46 #define FILESW                  8       /* interface from show */
  47     { "file file", 0 },
  48 #define FORMSW                  9
  49     { "form formfile", 0 },
  50 #define PARTSW                 10
  51     { "part number", 0 },
  52 #define TYPESW                 11
  53     { "type content", 0 },
  54 #define RCACHESW               12
  55     { "rcache policy", 0 },
  56 #define WCACHESW               13
  57     { "wcache policy", 0 },
  58 #define VERSIONSW              14
  59     { "version", 0 },
  60 #define HELPSW                 15
  61     { "help", 0 },
  62
  63 /*
  64  * switches for moreproc/mhlproc
  65  */
  66 #define PROGSW                 16
  67     { "moreproc program", -4 },
  68 #define NPROGSW                17
  69     { "nomoreproc", -3 },
  70 #define LENSW                  18
  71     { "length lines", -4 },
  72 #define WIDTHSW                19
  73     { "width columns", -4 },
  74
  75 /*
  76  * switches for debugging
  77  */
  78 #define DEBUGSW                20
  79     { "debug", -5 },
  80     { NULL, 0 }
  81 };
  82
  83
  84 /* mhparse.c */
  85 extern char *tmp;       /* directory to place temp files */
  86
  87 /* mhcachesbr.c */
  88 extern int rcachesw;
  89 extern int wcachesw;
  90 extern char *cache_public;
  91 extern char *cache_private;
  92
  93 /* mhshowsbr.c */
  94 extern int pausesw;
  95 extern int serialsw;
  96 extern char *progsw;
  97 extern int nolist;
  98 extern int nomore;      /* flags for moreproc/header display */
  99 extern char *formsw;
 100
 101 /* mhmisc.c */
 102 extern int npart;
 103 extern int ntype;
 104 extern char *parts[NPARTS + 1];
 105 extern char *types[NTYPES + 1];
 106 extern int userrs;
 107
 108 int debugsw = 0;
 109 int verbosw = 0;
 110
 111 #define quitser pipeser
 112
 113 /* mhparse.c */
 114 CT parse_mime (char *);
 115
 116 /* mhmisc.c */
 117 int part_ok (CT, int);
 118 int type_ok (CT, int);
 119 void set_endian (void);
 120 void flush_errors (void);
 121
 122 /* mhshowsbr.c */
 123 void show_all_messages (CT *);
 124
 125 /* mhfree.c */
 126 void free_content (CT);
 127 extern CT *cts;
 128 void freects_done (int) NORETURN;
 129
 130 /*
 131  * static prototypes
 132  */
 133 static RETSIGTYPE pipeser (int);
 134
 135
 136 int
 137 main (int argc, char **argv)
 138 {
 139     int msgnum, *icachesw;
 140     char *cp, *file = NULL, *folder = NULL;
 141     char *maildir, buf[100], **argp;
 142     char **arguments;
 143     struct msgs_array msgs = { 0, 0, NULL };
 144     struct msgs *mp = NULL;
 145     CT ct, *ctp;
 146     FILE *fp;
 147
 148     done=freects_done;
 149
 150 #ifdef LOCALE
 151     setlocale(LC_ALL, "");
 152 #endif
 153     invo_name = r1bindex (argv[0], '/');
 154
 155     /* read user profile/context */
 156     context_read();
 157
 158     arguments = getarguments (invo_name, argc, argv, 1);
 159     argp = arguments;
 160
 161     /*
 162      * Parse arguments
 163      */
 164     while ((cp = *argp++)) {
 165         if (*cp == '-') {
 166             switch (smatch (++cp, switches)) {
 167             case AMBIGSW:
 168                 ambigsw (cp, switches);
 169                 done (1);
 170             case UNKWNSW:
 171                 adios (NULL, "-%s unknown", cp);
 172
 173             case HELPSW:
 174                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 175                         invo_name);
 176                 print_help (buf, switches, 1);
 177                 done (1);
 178             case VERSIONSW:
 179                 print_version(invo_name);
 180                 done (1);
 181
 182             case RCACHESW:
 183                 icachesw = &rcachesw;
 184                 goto do_cache;
 185             case WCACHESW:
 186                 icachesw = &wcachesw;
 187 do_cache:
 188                 if (!(cp = *argp++) || *cp == '-')
 189                     adios (NULL, "missing argument to %s", argp[-2]);
 190                 switch (*icachesw = smatch (cp, caches)) {
 191                 case AMBIGSW:
 192                     ambigsw (cp, caches);
 193                     done (1);
 194                 case UNKWNSW:
 195                     adios (NULL, "%s unknown", cp);
 196                 default:
 197                     break;
 198                 }
 199                 continue;
 200
 201             case CHECKSW:
 202                 checksw++;
 203                 continue;
 204             case NCHECKSW:
 205                 checksw = 0;
 206                 continue;
 207
 208             case PAUSESW:
 209                 pausesw = 1;
 210                 continue;
 211             case NPAUSESW:
 212                 pausesw = 0;
 213                 continue;
 214
 215             case SERIALSW:
 216                 serialsw = 1;
 217                 continue;
 218             case NSERIALSW:
 219                 serialsw = 0;
 220                 continue;
 221
 222             case PARTSW:
 223                 if (!(cp = *argp++) || *cp == '-')
 224                     adios (NULL, "missing argument to %s", argp[-2]);
 225                 if (npart >= NPARTS)
 226                     adios (NULL, "too many parts (starting with %s), %d max",
 227                            cp, NPARTS);
 228                 parts[npart++] = cp;
 229                 continue;
 230
 231             case TYPESW:
 232                 if (!(cp = *argp++) || *cp == '-')
 233                     adios (NULL, "missing argument to %s", argp[-2]);
 234                 if (ntype >= NTYPES)
 235                     adios (NULL, "too many types (starting with %s), %d max",
 236                            cp, NTYPES);
 237                 types[ntype++] = cp;
 238                 continue;
 239
 240             case FILESW:
 241                 if (!(cp = *argp++) || (*cp == '-' && cp[1]))
 242                     adios (NULL, "missing argument to %s", argp[-2]);
 243                 file = *cp == '-' ? cp : path (cp, TFILE);
 244                 continue;
 245
 246             case FORMSW:
 247                 if (!(cp = *argp++) || *cp == '-')
 248                     adios (NULL, "missing argument to %s", argp[-2]);
 249                 if (formsw)
 250                     free (formsw);
 251                 formsw = getcpy (etcpath (cp));
 252                 continue;
 253
 254             /*
 255              * Switches for moreproc/mhlproc
 256              */
 257             case PROGSW:
 258                 if (!(progsw = *argp++) || *progsw == '-')
 259                     adios (NULL, "missing argument to %s", argp[-2]);
 260                 continue;
 261             case NPROGSW:
 262                 nomore++;
 263                 continue;
 264
 265             case LENSW:
 266             case WIDTHSW:
 267                 if (!(cp = *argp++) || *cp == '-')
 268                     adios (NULL, "missing argument to %s", argp[-2]);
 269                 continue;
 270
 271             case VERBSW:
 272                 verbosw = 1;
 273                 continue;
 274             case NVERBSW:
 275                 verbosw = 0;
 276                 continue;
 277             case DEBUGSW:
 278                 debugsw = 1;
 279                 continue;
 280             }
 281         }
 282         if (*cp == '+' || *cp == '@') {
 283             if (folder)
 284                 adios (NULL, "only one folder at a time!");
 285             else
 286                 folder = pluspath (cp);
 287         } else
 288                 app_msgarg(&msgs, cp);
 289     }
 290
 291     /* null terminate the list of acceptable parts/types */
 292     parts[npart] = NULL;
 293     types[ntype] = NULL;
 294
 295     set_endian ();
 296
 297     if ((cp = getenv ("MM_NOASK")) && !strcmp (cp, "1")) {
 298         nolist  = 1;
 299         pausesw = 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 ((struct node **) 0, 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 ((struct node **) 0, 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 = getcpy (m_maildir (cache_private));
 330
 331     /*
 332      * Check for storage directory.  If specified,
 333      * then store temporary files there.  Else we
 334      * store them in standard nmh directory.
 335      */
 336     if ((cp = context_find (nmhstorage)) && *cp)
 337         tmp = concat (cp, "/", invo_name, NULL);
 338     else
 339         tmp = add (m_maildir (invo_name), NULL);
 340
 341     if (!context_find ("path"))
 342         free (path ("./", TFOLDER));
 343
 344     if (file && msgs.size)
 345         adios (NULL, "cannot specify msg and file at same time!");
 346
 347     /*
 348      * check if message is coming from file
 349      */
 350     if (file) {
 351         if (!(cts = (CT *) calloc ((size_t) 2, sizeof(*cts))))
 352             adios (NULL, "out of memory");
 353         ctp = cts;
 354
 355         if ((ct = parse_mime (file)));
 356             *ctp++ = ct;
 357     } else {
 358         /*
 359          * message(s) are coming from a folder
 360          */
 361         if (!msgs.size)
 362             app_msgarg(&msgs, "cur");
 363         if (!folder)
 364             folder = getfolder (1);
 365         maildir = m_maildir (folder);
 366
 367         if (chdir (maildir) == NOTOK)
 368             adios (maildir, "unable to change directory to");
 369
 370         /* read folder and create message structure */
 371         if (!(mp = folder_read (folder)))
 372             adios (NULL, "unable to read folder %s", folder);
 373
 374         /* check for empty folder */
 375         if (mp->nummsg == 0)
 376             adios (NULL, "no messages in %s", folder);
 377
 378         /* parse all the message ranges/sequences and set SELECTED */
 379         for (msgnum = 0; msgnum < msgs.size; msgnum++)
 380             if (!m_convert (mp, msgs.msgs[msgnum]))
 381                 done (1);
 382
 383         /*
 384          * Set the SELECT_UNSEEN bit for all the SELECTED messages,
 385          * since we will use that as a tag to know which messages
 386          * to remove from the "unseen" sequence.
 387          */
 388         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
 389             if (is_selected(mp, msgnum))
 390                 set_unseen (mp, msgnum);
 391
 392         seq_setprev (mp);       /* set the Previous-Sequence */
 393         seq_setunseen (mp, 1);  /* unset the Unseen-Sequence */
 394
 395         if (!(cts = (CT *) calloc ((size_t) (mp->numsel + 1), sizeof(*cts))))
 396             adios (NULL, "out of memory");
 397         ctp = cts;
 398
 399         /*
 400          * Parse all the SELECTED messages.
 401          */
 402         for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 403             if (is_selected(mp, msgnum)) {
 404                 char *msgnam;
 405
 406                 msgnam = m_name (msgnum);
 407                 if ((ct = parse_mime (msgnam)))
 408                     *ctp++ = ct;
 409             }
 410         }
 411     }
 412
 413     if (!*cts)
 414         done (1);
 415
 416     userrs = 1;
 417     SIGNAL (SIGQUIT, quitser);
 418     SIGNAL (SIGPIPE, pipeser);
 419
 420     /*
 421      * Get the associated umask for the relevant contents.
 422      */
 423     for (ctp = cts; *ctp; ctp++) {
 424         struct stat st;
 425
 426         ct = *ctp;
 427         if (type_ok (ct, 1) && !ct->c_umask) {
 428             if (stat (ct->c_file, &st) != NOTOK)
 429                 ct->c_umask = ~(st.st_mode & 0777);
 430             else
 431                 ct->c_umask = ~m_gmprot();
 432         }
 433     }
 434
 435     /*
 436      * Show the message content
 437      */
 438     show_all_messages (cts);
 439
 440     /* Now free all the structures for the content */
 441     for (ctp = cts; *ctp; ctp++)
 442         free_content (*ctp);
 443
 444     free ((char *) cts);
 445     cts = NULL;
 446
 447     /* If reading from a folder, do some updating */
 448     if (mp) {
 449         context_replace (pfolder, folder);/* update current folder  */
 450         seq_setcur (mp, mp->hghsel);      /* update current message */
 451         seq_save (mp);                    /* synchronize sequences  */
 452         context_save ();                  /* save the context file  */
 453     }
 454
 455     done (0);
 456     return 1;
 457 }
 458
 459
 460 static RETSIGTYPE
 461 pipeser (int i)
 462 {
 463     if (i == SIGQUIT) {
 464         unlink ("core");
 465         fflush (stdout);
 466         fprintf (stderr, "\n");
 467         fflush (stderr);
 468     }
 469
 470     done (1);
 471     /* NOTREACHED */
 472 }