98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/* oid_resolv.c
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* Routines for OBJECT IDENTIFIER name resolution
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include "oid_resolv.h"
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#include "to_str.h"
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#include "strutil.h"
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#include "epan/dissectors/format-oid.h"
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static GHashTable *oid_table = NULL;
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void oid_resolv_init(void) {
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oid_table = g_hash_table_new(g_str_hash, g_str_equal);
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}
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static void free_oid_str(gpointer key, gpointer value _U_,
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gpointer user_data _U_) {
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g_free(key);
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}
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void oid_resolv_cleanup(void) {
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g_hash_table_foreach(oid_table, free_oid_str, NULL);
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g_hash_table_destroy(oid_table);
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oid_table = NULL;
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}
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gboolean oid_resolv_enabled(void) {
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return TRUE;
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}
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const gchar *get_oid_name(const guint8 *oid, gint oid_len) {
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const gchar *name;
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subid_t *subid_oid;
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guint subid_oid_length;
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gchar *decoded_oid;
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gchar *non_decoded_oid;
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name = g_hash_table_lookup(oid_table, oid_to_str(oid, oid_len));
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if (name) return name;
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subid_oid = g_malloc((oid_len+1) * sizeof(gulong));
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subid_oid_length = oid_to_subid_buf(oid, oid_len, subid_oid, ((oid_len+1) * sizeof(gulong)));
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new_format_oid(subid_oid, subid_oid_length, &non_decoded_oid, &decoded_oid);
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g_free(subid_oid);
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return decoded_oid;
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}
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const gchar *get_oid_str_name(const gchar *oid_str) {
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const gchar *name;
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GByteArray *bytes;
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gboolean res;
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bytes = g_byte_array_new();
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res = oid_str_to_bytes(oid_str, bytes);
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if (!res) {
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/* just try a direct lookup - this allows backward compatibility
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with non-OIDs used for X.411 standard extensions and DISP initiators */
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return g_hash_table_lookup(oid_table, oid_str);
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}
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name = get_oid_name(bytes->data, bytes->len);
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g_byte_array_free(bytes, TRUE);
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return name;
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}
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extern void add_oid_name(const guint8 *oid, gint oid_len, const gchar *name) {
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add_oid_str_name(oid_to_str(oid, oid_len), name);
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}
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extern void add_oid_str_name(const gchar *oid_str, const gchar *name) {
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g_hash_table_insert(oid_table, (gpointer)g_strdup(oid_str), (gpointer)name);
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}
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