/* packet-k12.c * Routines for displaying frames from k12 rf5 files * * Luis E. Garcia Ontanon * * $Id$ * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 * * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #include #include static int proto_k12 = -1; static int hf_k12_port_id = -1; static int hf_k12_port_name = -1; static int hf_k12_stack_file = -1; static int hf_k12_port_type = -1; static int hf_k12_atm_vp = -1; static int hf_k12_atm_vc = -1; static int hf_k12_atm_cid = -1; static int hf_k12_ts = -1; static gint ett_k12 = -1; static gint ett_port = -1; static dissector_handle_t k12_handle; static dissector_handle_t data_handle; static module_t *k12_module; static const char* k12_config_filename = ""; static GHashTable* k12_cfg = NULL; static const value_string k12_port_types[] = { { K12_PORT_DS1, "Ds1" }, { K12_PORT_DS0S, "Ds0 Range" }, { K12_PORT_ATMPVC, "ATM PVC" }, { 0,NULL} }; static void dissect_k12(tvbuff_t* tvb,packet_info* pinfo,proto_tree* tree) { proto_item* k12_item; proto_tree* k12_tree; dissector_handle_t sub_handle; k12_item = proto_tree_add_protocol_format(tree, proto_k12, tvb, 0, 0, "Packet from: '%s' (0x%.8x)", pinfo->pseudo_header->k12.input_name, pinfo->pseudo_header->k12.input); k12_tree = proto_item_add_subtree(k12_item, ett_k12); proto_tree_add_uint(k12_tree, hf_k12_port_id, tvb, 0,0,pinfo->pseudo_header->k12.input); proto_tree_add_string(k12_tree, hf_k12_port_name, tvb, 0,0,pinfo->pseudo_header->k12.input_name); proto_tree_add_string(k12_tree, hf_k12_stack_file, tvb, 0,0,pinfo->pseudo_header->k12.stack_file); k12_item = proto_tree_add_uint(k12_tree, hf_k12_port_type, tvb, 0, 0, pinfo->pseudo_header->k12.input_type); k12_tree = proto_item_add_subtree(k12_item, ett_port); switch ( pinfo->pseudo_header->k12.input_type ) { case K12_PORT_DS0S: proto_tree_add_uint(k12_tree, hf_k12_ts, tvb, 0,0,pinfo->pseudo_header->k12.input_info.ds0mask); break; case K12_PORT_ATMPVC: { gchar* circuit_str = ep_strdup_printf("%u:%u:%u", (guint)pinfo->pseudo_header->k12.input_info.atm.vp, (guint)pinfo->pseudo_header->k12.input_info.atm.vc, (guint)pinfo->pseudo_header->k12.input_info.atm.cid); pinfo->circuit_id = g_str_hash(circuit_str); proto_tree_add_uint(k12_tree, hf_k12_atm_vp, tvb, 0,0,pinfo->pseudo_header->k12.input_info.atm.vp); proto_tree_add_uint(k12_tree, hf_k12_atm_vc, tvb, 0,0,pinfo->pseudo_header->k12.input_info.atm.vc); if (pinfo->pseudo_header->k12.input_info.atm.cid) proto_tree_add_uint(k12_tree, hf_k12_atm_cid, tvb, 0,0,pinfo->pseudo_header->k12.input_info.atm.cid); break; } default: break; } if (! k12_cfg ) { sub_handle = data_handle; } else { sub_handle = g_hash_table_lookup(k12_cfg,pinfo->pseudo_header->k12.stack_file); if (! sub_handle ) sub_handle = data_handle; } call_dissector(sub_handle, tvb, pinfo, tree); } static gboolean free_just_key (gpointer k, gpointer v _U_, gpointer p _U_) { g_free(k); return TRUE; } static GHashTable* k12_load_config(const gchar* filename) { FILE* fp; gchar buffer[0x10000]; size_t len; GHashTable* hash = g_hash_table_new(g_str_hash,g_str_equal); gchar** curr; gchar** lines = NULL; guint i; dissector_handle_t handle; /* XXX: should look for the file in common locations */ if (( fp = fopen(filename,"r") )) { len = fread(buffer,1,0xFFFF,fp); fclose(fp); } else { report_open_failure(filename, errno, FALSE); return NULL; } if (len > 0) { lines = g_strsplit(buffer,"\n",0); for (i = 0 ; lines[i]; i++) { g_strstrip(lines[i]); g_strdown(lines[i]); if(*(lines[i]) == '#' || *(lines[i]) == '\0') continue; curr = g_strsplit(lines[i]," ",0); if (! (curr[0] != NULL && *(curr[0]) != '\0' && curr[1] != NULL && *(curr[1]) != '\0' ) ) { report_failure("K12xx: Format error in line %u",i+1); g_strfreev(curr); g_strfreev(lines); g_hash_table_foreach_remove(hash,free_just_key,NULL); g_hash_table_destroy(hash); return NULL; } g_strstrip(curr[0]); g_strstrip(curr[1]); handle = find_dissector(curr[1]); if (! handle ) { report_failure("k12: proto %s not found",curr[1]); handle = data_handle; } g_hash_table_insert(hash,g_strdup(curr[0]),handle); g_strfreev(curr); } g_strfreev(lines); return hash; } g_hash_table_destroy(hash); report_read_failure(filename, errno); return NULL; } static void k12_load_prefs(void) { if (k12_cfg) { g_hash_table_foreach_remove(k12_cfg,free_just_key,NULL); g_hash_table_destroy(k12_cfg); k12_cfg = NULL; } if (*k12_config_filename != '\0') { k12_cfg = k12_load_config(k12_config_filename); return; } } void proto_reg_handoff_k12(void) { k12_handle = find_dissector("k12"); data_handle = find_dissector("data"); dissector_add("wtap_encap", WTAP_ENCAP_K12, k12_handle); } void proto_register_k12(void) { static hf_register_info hf[] = { { &hf_k12_port_id, { "Port Id", "k12.port_id", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }}, { &hf_k12_port_name, { "Port Name", "k12.port_name", FT_STRING, BASE_NONE, NULL, 0x0,"", HFILL }}, { &hf_k12_stack_file, { "Stack file used", "k12.stack_file", FT_STRING, BASE_NONE, NULL, 0x0,"", HFILL }}, { &hf_k12_port_type, { "Port type", "k12.input_type", FT_UINT32, BASE_HEX, VALS(k12_port_types), 0x0,"", HFILL }}, { &hf_k12_ts, { "Timeslot mask", "k12.ds0.ts", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }}, { &hf_k12_atm_vp, { "ATM VPI", "atm.vpi", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_k12_atm_vc, { "ATM VCI", "atm.vci", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }}, { &hf_k12_atm_cid, { "AAL2 CID", "aal2.cid", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }} }; static gint *ett[] = { &ett_k12, &ett_port }; proto_k12 = proto_register_protocol("K12xx", "K12xx", "k12"); proto_register_field_array(proto_k12, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); register_dissector("k12", dissect_k12, proto_k12); k12_module = prefs_register_protocol(proto_k12, k12_load_prefs); prefs_register_string_preference(k12_module, "config", "Configuration filename", "K12 module configuration filename", &k12_config_filename); }