forked from osmocom/wireshark
200 lines
5.1 KiB
C
200 lines
5.1 KiB
C
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/* packet-k12.c
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* Routines for displaying frames from k12 rf5 files
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*
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* Luis E. Garcia Ontanon <luis.ontanon@gmail.com>
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*
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* $Id$
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998
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*
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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 <stdio.h>
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#include <glib.h>
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#include <string.h>
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#include <epan/packet.h>
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#include <prefs.h>
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static int proto_k12 = -1;
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static int hf_k12_port_id = -1;
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static int hf_k12_port_name = -1;
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static int hf_k12_stack_file = -1;
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static gint ett_k12 = -1;
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static dissector_handle_t k12_handle;
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static dissector_handle_t data_handle;
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static module_t *k12_module;
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static char* k12_config_filename = "";
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static GHashTable* k12_cfg = NULL;
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static void dissect_k12(tvbuff_t* tvb,packet_info* pinfo,proto_tree* tree) {
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proto_item* k12_item;
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proto_tree* k12_tree;
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dissector_handle_t sub_handle;
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k12_item = proto_tree_add_protocol_format(tree, proto_k12, tvb, 0, 0, "Packet from: '%s' (0x%.8x)",
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pinfo->pseudo_header->k12.src_name,
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pinfo->pseudo_header->k12.src_id);
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k12_tree = proto_item_add_subtree(k12_item, ett_k12);
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proto_tree_add_uint(k12_tree, hf_k12_port_id, tvb, 0,0,pinfo->pseudo_header->k12.src_id);
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proto_tree_add_string(k12_tree, hf_k12_port_name, tvb, 0,0,pinfo->pseudo_header->k12.src_name);
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proto_tree_add_string(k12_tree, hf_k12_stack_file, tvb, 0,0,pinfo->pseudo_header->k12.stack_file);
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if (! k12_cfg ) {
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sub_handle = data_handle;
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} else {
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sub_handle = g_hash_table_lookup(k12_cfg,pinfo->pseudo_header->k12.stack_file);
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if (! sub_handle )
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sub_handle = data_handle;
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}
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call_dissector(sub_handle, tvb, pinfo, tree);
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}
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static gboolean free_just_key (gpointer k, gpointer v _U_, gpointer p _U_) {
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g_free(k);
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return TRUE;
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}
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static GHashTable* k12_load_config(FILE* fp) {
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gchar buffer[0x10000];
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size_t len;
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GHashTable* hash = g_hash_table_new(g_str_hash,g_str_equal);
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gchar** curr;
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gchar** lines = NULL;
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guint i;
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dissector_handle_t handle;
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len = fread(buffer,1,0xFFFF,fp);
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if (len > 0) {
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lines = g_strsplit(buffer,"\n",0);
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for (i = 0 ; lines[i]; i++) {
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g_strstrip(lines[i]);
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if(*(lines[i]) == '#') continue;
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if(*(lines[i]) == '\0') break;
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curr = g_strsplit(lines[i]," ",0);
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if (! (curr[0] != NULL && *curr[0] != '\0' && curr[1] != NULL && *curr[1] != '\0' ) ) {
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/* XXX report_error */
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g_warning("K12xx: Format error in line %u",i+1);
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g_strfreev(curr);
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g_strfreev(lines);
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g_hash_table_foreach_remove(hash,free_just_key,NULL);
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g_hash_table_destroy(hash);
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return NULL;
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}
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g_strstrip(curr[0]);
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g_strstrip(curr[1]);
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handle = find_dissector(curr[1]);
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if (! handle ) {
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/* XXX report_error */
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g_warning("k12: proto %s not found",curr[1]);
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handle = data_handle;
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}
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g_hash_table_insert(hash,g_strdup(curr[0]),handle);
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g_strfreev(curr);
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}
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g_strfreev(lines);
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return hash;
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}
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g_hash_table_destroy(hash);
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/* XXX report_error */
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g_warning("K12xx: I/O error");
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return NULL;
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}
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static void k12_load_prefs(void) {
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FILE* fp;
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if (k12_cfg) {
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g_hash_table_foreach_remove(k12_cfg,free_just_key,NULL);
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g_hash_table_destroy(k12_cfg);
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k12_cfg = NULL;
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}
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if (*k12_config_filename != '\0') {
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if (( fp = fopen(k12_config_filename,"r") )) {
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k12_cfg = k12_load_config(fp);
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return;
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} else {
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/* XXX report_error */
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g_warning("failed to open: %s",k12_config_filename);
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}
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}
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}
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void proto_reg_handoff_k12(void) {
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k12_handle = find_dissector("k12");
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data_handle = find_dissector("data");
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dissector_add("wtap_encap", WTAP_ENCAP_K12, k12_handle);
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}
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void
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proto_register_k12(void)
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{
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static hf_register_info hf[] = {
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{ &hf_k12_port_id, { "Port Id", "k12.port_id", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
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{ &hf_k12_port_name, { "Port Name", "k12.port_name", FT_STRING, BASE_NONE, NULL, 0x0,"", HFILL }},
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{ &hf_k12_stack_file, { "Stack file used", "k12.stack_file", FT_STRING, BASE_NONE, NULL, 0x0,"", HFILL }}
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};
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static gint *ett[] = {
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&ett_k12,
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};
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proto_k12 = proto_register_protocol("K12xx", "K12xx", "k12");
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proto_register_field_array(proto_k12, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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register_dissector("k12", dissect_k12, proto_k12);
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k12_module = prefs_register_protocol(proto_k12, k12_load_prefs);
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prefs_register_string_preference(k12_module, "config",
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"Configuration filename",
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"K12 module configuration filename",
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&k12_config_filename);
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}
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