source: trunk/gsdl/packages/yaz/odr/dumpber.c@ 1343

/*
 * Copyright (c) 1995-2000, Index Data.
 * See the file LICENSE for details.
 * Sebastian Hammer, Adam Dickmeiss
 *
 * $Log$
 * Revision 1.1  2000/08/03 03:11:17  johnmcp
 * Added the YAZ toolkit source to the packages directory (for z39.50 stuff)
 *
 * Revision 1.12  2000/02/29 13:44:55  adam
 * Check for config.h (currently not generated).
 *
 * Revision 1.11  1999/11/30 13:47:11  adam
 * Improved installation. Moved header files to include/yaz.
 *
 * Revision 1.10  1999/01/08 11:23:26  adam
 * Added const modifier to some of the BER/ODR encoding routines.
 *
 * Revision 1.9  1998/01/14 09:53:26  quinn
 * Added a bit more info to dump.
 *
 * Revision 1.8  1997/05/14 06:53:57  adam
 * C++ support.
 *
 * Revision 1.7  1996/03/08 14:38:41  quinn
 * Fixed output.
 *
 * Revision 1.6  1996/01/19  15:41:34  quinn
 * dumpber was ignoring the file argument.
 *
 * Revision 1.5  1995/10/18  16:12:55  quinn
 * Better diagnostics. Added special case in NULL to handle WAIS server.
 *
 * Revision 1.4  1995/09/29  17:12:21  quinn
 * Smallish
 *
 * Revision 1.3  1995/09/27  15:02:57  quinn
 * Modified function heads & prototypes.
 *
 * Revision 1.2  1995/06/27  13:20:51  quinn
 * Fixed sign-clash. Non-fatal warning
 *
 * Revision 1.1  1995/06/19  12:38:45  quinn
 * Added BER dumper.
 *
 *
 */
#if HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <yaz/odr.h>

static int do_dumpBER(FILE *f, const char *buf, int len, int level, int offset)
{
    int res, ll, zclass, tag, cons, lenlen, taglen;
    const char *b = buf, *bp = buf;
    
    if (!len)
        return 0;
    if (!buf[0] && !buf[1])
        return 0;
    if ((res = ber_dectag((unsigned char*)b, &zclass, &tag, &cons)) <= 0)
        return 0;
    if (res > len)
    {
        fprintf(stderr, "Unexpected end of buffer\n");
        return 0;
    }
    fprintf(f, "%5d: %*s", offset, level * 4, "");
    if (zclass == ODR_UNIVERSAL)
    {
        static char *nl[] =
    {
        "[Univ 0]", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING",
        "NULL", "OID", "OBJECT DESCIPTOR", "EXTERNAL", "REAL",
        "ENUM", "[UNIV 11]", "[UNIV 12]", "[UNIV 13]", "[UNIV 14]",
        "[UNIV 15]", "SEQUENCE", "SET", "NUMERICSTRING", "PRINTABLESTRING",
        "[UNIV 20]", "[UNIV 21]", "[UNIV 22]", "[UNIV 23]", "[UNIV 24]",
        "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING", "[UNIV 28]"
    };

    if (tag < 28)
        fprintf(f, "%s", nl[tag]);
    else
        fprintf(f, "[UNIV %d]", tag);
    }
    else if (zclass == ODR_CONTEXT)
    fprintf(f, "[%d]", tag);
    else
    fprintf(f, "[%d:%d]", zclass, tag);
    b += res;
    taglen = res;
    len -= res;
    bp = b;
    if ((res = ber_declen((unsigned char*)b, &ll)) <= 0)
    {
        fprintf(f, "bad length\n");
        return 0;
    }
    if (res > len)
    {
        fprintf(f, "Unexpected end of buffer\n");
        return 0;
    }
    lenlen = res;
    b += res;
    len -= res;
    if (ll >= 0)
        fprintf(f, " len=%d", ll);
    else
        fprintf(f, " len=?");
    fprintf(f, "       tl=%d, ll=%d\n", taglen, lenlen);
    if (!cons)
    {
        if (ll < 0)
    {
        fprintf(f, "Bad length on primitive type.\n");
        return 0;
    }
        return ll + (b - buf);
    }
    if (ll >= 0)
        len = ll;
    /* constructed - cycle through children */
    while ((ll == -1 && len >= 2) || (ll >= 0 && len))
    {
    if (ll == -1 && *b == 0 && *(b + 1) == 0)
        break;
    if (!(res = do_dumpBER(f, b, len, level + 1, offset + (b - buf))))
    {
        fprintf(f, "Dump of content element failed.\n");
        return 0;
    }
    b += res;
    len -= res;
    }
    if (ll == -1)
    {
        if (len < 2)
    {
        fprintf(f, "Buffer too short in indefinite lenght.\n");
        return 0;
    }
    return (b - buf) + 2;
    }
    return b - buf;
}

int odr_dumpBER(FILE *f, const char *buf, int len)
{
    return do_dumpBER(f, buf, len, 0, 0);
}