328 lines
11 KiB
C
328 lines
11 KiB
C
/* packet-rrc.c
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* Routines for Universal Mobile Telecommunications System (UMTS);
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* Radio Resource Control (RRC) protocol specification
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* (3GPP TS 25.331 packet dissection
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* Copyright 2006-2010, Anders Broman <anders.broman@ericsson.com>
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Ref: 3GPP TS 25.331 V11.4.0 (2012-12)
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*/
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/**
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*
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* TODO:
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* - Fix ciphering information for circuit switched stuff
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*/
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#include "config.h"
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/asn1.h>
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#include <epan/conversation.h>
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#include <epan/expert.h>
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#include "packet-ber.h"
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#include "packet-per.h"
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#include "packet-rrc.h"
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#include "packet-gsm_a_common.h"
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#include "packet-umts_fp.h"
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#ifdef _MSC_VER
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/* disable: "warning C4049: compiler limit : terminating line number emission" */
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#pragma warning(disable:4049)
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/* disable: "warning C4146: unary minus operator applied to unsigned type, result still unsigned" */
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#pragma warning(disable:4146)
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#endif
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#define PNAME "Radio Resource Control (RRC) protocol"
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#define PSNAME "RRC"
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#define PFNAME "rrc"
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extern int proto_fp; /*Handler to FP*/
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GTree * hsdsch_muxed_flows = NULL;
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GTree * rrc_ciph_inf = NULL;
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static int msg_type _U_;
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static dissector_handle_t gsm_a_dtap_handle;
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static dissector_handle_t rrc_ue_radio_access_cap_info_handle=NULL;
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static dissector_handle_t rrc_pcch_handle=NULL;
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static dissector_handle_t rrc_ul_ccch_handle=NULL;
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static dissector_handle_t rrc_dl_ccch_handle=NULL;
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static dissector_handle_t rrc_ul_dcch_handle=NULL;
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static dissector_handle_t rrc_dl_dcch_handle=NULL;
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static dissector_handle_t rrc_bcch_fach_handle=NULL;
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static dissector_handle_t lte_rrc_ue_eutra_cap_handle=NULL;
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static dissector_handle_t lte_rrc_dl_dcch_handle=NULL;
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static dissector_handle_t gsm_rlcmac_dl_handle=NULL;
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enum nas_sys_info_gsm_map {
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RRC_NAS_SYS_INFO_CS,
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RRC_NAS_SYS_INFO_PS,
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RRC_NAS_SYS_INFO_CN_COMMON
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};
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static guint32 rrc_nas_sys_info_gsm_map_type = RRC_NAS_SYS_INFO_CN_COMMON;
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/* Forward declarations */
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static int dissect_UE_RadioAccessCapabilityInfo_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_SysInfoTypeSB1_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_SysInfoTypeSB2_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_SysInfoType5_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_SysInfoType11_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_SysInfoType11bis_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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static int dissect_SysInfoType22_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *);
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/* Include constants */
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#include "packet-rrc-val.h"
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/* Initialize the protocol and registered fields */
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int proto_rrc = -1;
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static int hf_test;
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#include "packet-rrc-hf.c"
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/* Initialize the subtree pointers */
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static int ett_rrc = -1;
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#include "packet-rrc-ett.c"
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static gint ett_rrc_eutraFeatureGroupIndicators = -1;
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static gint ett_rrc_cn_CommonGSM_MAP_NAS_SysInfo = -1;
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/* Global variables */
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static proto_tree *top_tree;
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static int hf_rrc_eutra_feat_group_ind_1 = -1;
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static int hf_rrc_eutra_feat_group_ind_2 = -1;
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static int hf_rrc_eutra_feat_group_ind_3 = -1;
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static int hf_rrc_eutra_feat_group_ind_4 = -1;
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static const true_false_string rrc_eutra_feat_group_ind_1_val = {
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"UTRA CELL_PCH to EUTRA RRC_IDLE cell reselection - Supported",
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"UTRA CELL_PCH to EUTRA RRC_IDLE cell reselection - Not supported"
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};
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static const true_false_string rrc_eutra_feat_group_ind_2_val = {
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"EUTRAN measurements and reporting in connected mode - Supported",
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"EUTRAN measurements and reporting in connected mode - Not supported"
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};
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static const true_false_string rrc_eutra_feat_group_ind_3_val = {
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"UTRA CELL_FACH absolute priority cell reselection for high priority layers - Supported",
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"UTRA CELL_FACH absolute priority cell reselection for high priority layers - Not supported"
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};
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static const true_false_string rrc_eutra_feat_group_ind_4_val = {
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"UTRA CELL_FACH absolute priority cell reselection for all layers - Supported",
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"UTRA CELL_FACH absolute priority cell reselection for all layers - Not supported"
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};
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static int flowd,type;
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static int cipher_start_val[2] _U_;
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/*Stores how many channels we have detected for a HS-DSCH MAC-flow*/
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#define RRC_MAX_NUM_HSDHSCH_MACDFLOW 8
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static guint8 num_chans_per_flow[RRC_MAX_NUM_HSDHSCH_MACDFLOW];
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static int rbid;
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static int activation_frame;
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/**
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* Return the maximum counter, useful for initiating counters
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*/
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#if 0
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static int get_max_counter(int com_context){
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int i;
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guint32 max = 0;
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rrc_ciphering_info * c_inf;
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if( (c_inf = g_tree_lookup(rrc_ciph_inf, GINT_TO_POINTER((gint)com_context))) == NULL ){
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return 0;
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}
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for(i = 0; i<31; i++){
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max = MAX(c_inf->ps_conf_counters[i][0], max);
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max = MAX(c_inf->ps_conf_counters[i][1], max);
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}
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return max;
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}
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#endif
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/** Utility functions used for various comparisons/cleanups in tree **/
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gint rrc_key_cmp(gconstpointer b_ptr, gconstpointer a_ptr, gpointer ignore _U_){
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if( GPOINTER_TO_INT(a_ptr) > GPOINTER_TO_INT(b_ptr) ){
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return -1;
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}
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return GPOINTER_TO_INT(a_ptr) < GPOINTER_TO_INT(b_ptr);
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}
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void rrc_free_key(gpointer key _U_){
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/*Keys should be de allocated elsewhere.*/
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}
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void rrc_free_value(gpointer value ){
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g_free(value);
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}
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#include "packet-rrc-fn.c"
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#include "packet-rrc.h"
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static void
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dissect_rrc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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/* FIX ME Currently don't know the 'starting point' of this protocol
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* exported DL-DCCH-Message is the entry point.
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*/
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proto_item *rrc_item = NULL;
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proto_tree *rrc_tree = NULL;
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struct rrc_info *rrcinf;
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top_tree = tree;
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rrcinf = (struct rrc_info *)p_get_proto_data(pinfo->fd, proto_rrc);
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/* make entry in the Protocol column on summary display */
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "RRC");
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/*Clear memory*/
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memset(num_chans_per_flow,0,sizeof(guint8)*RRC_MAX_NUM_HSDHSCH_MACDFLOW);
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/* create the rrc protocol tree */
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rrc_item = proto_tree_add_item(tree, proto_rrc, tvb, 0, -1, ENC_NA);
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rrc_tree = proto_item_add_subtree(rrc_item, ett_rrc);
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if (rrcinf) {
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switch (rrcinf->msgtype[pinfo->fd->subnum]) {
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case RRC_MESSAGE_TYPE_PCCH:
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call_dissector(rrc_pcch_handle, tvb, pinfo, rrc_tree);
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break;
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case RRC_MESSAGE_TYPE_UL_CCCH:
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call_dissector(rrc_ul_ccch_handle, tvb, pinfo, rrc_tree);
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break;
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case RRC_MESSAGE_TYPE_DL_CCCH:
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call_dissector(rrc_dl_ccch_handle, tvb, pinfo, rrc_tree);
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break;
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case RRC_MESSAGE_TYPE_UL_DCCH:
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call_dissector(rrc_ul_dcch_handle, tvb, pinfo, rrc_tree);
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break;
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case RRC_MESSAGE_TYPE_DL_DCCH:
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call_dissector(rrc_dl_dcch_handle, tvb, pinfo, rrc_tree);
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break;
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case RRC_MESSAGE_TYPE_BCCH_FACH:
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call_dissector(rrc_bcch_fach_handle, tvb, pinfo, rrc_tree);
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break;
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default:
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;
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}
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}
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}
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void rrc_init(void){
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/*Cleanup*/
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if(hsdsch_muxed_flows){
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g_tree_destroy(hsdsch_muxed_flows);
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}
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if(rrc_ciph_inf){
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g_tree_destroy(rrc_ciph_inf);
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}
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/*Initialize structure for muxed flow indication*/
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hsdsch_muxed_flows = g_tree_new_full(rrc_key_cmp,
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NULL, /* data pointer, optional */
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rrc_free_key,
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rrc_free_value);
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/*Initialize structure for muxed flow indication*/
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rrc_ciph_inf = g_tree_new_full(rrc_key_cmp,
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NULL, /* data pointer, optional */
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NULL,
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rrc_free_value);
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}
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/*--- proto_register_rrc -------------------------------------------*/
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void proto_register_rrc(void) {
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/* List of fields */
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static hf_register_info hf[] = {
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#include "packet-rrc-hfarr.c"
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{ &hf_test,
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{ "RAB Test", "rrc.RAB.test",
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FT_UINT8, BASE_DEC, NULL, 0,
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"rrc.RAB_Info_r6", HFILL }},
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{ &hf_rrc_eutra_feat_group_ind_1,
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{ "Indicator 1", "rrc.eutra_feat_group_ind_1",
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FT_BOOLEAN, BASE_NONE, TFS(&rrc_eutra_feat_group_ind_1_val), 0,
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"EUTRA Feature Group Indicator 1", HFILL }},
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{ &hf_rrc_eutra_feat_group_ind_2,
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{ "Indicator 2", "rrc.eutra_feat_group_ind_2",
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FT_BOOLEAN, BASE_NONE, TFS(&rrc_eutra_feat_group_ind_2_val), 0,
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"EUTRA Feature Group Indicator 2", HFILL }},
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{ &hf_rrc_eutra_feat_group_ind_3,
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{ "Indicator 3", "rrc.eutra_feat_group_ind_3",
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FT_BOOLEAN, BASE_NONE, TFS(&rrc_eutra_feat_group_ind_3_val), 0,
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"EUTRA Feature Group Indicator 3", HFILL }},
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{ &hf_rrc_eutra_feat_group_ind_4,
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{ "Indicator 4", "rrc.eutra_feat_group_ind_4",
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FT_BOOLEAN, BASE_NONE, TFS(&rrc_eutra_feat_group_ind_4_val), 0,
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"EUTRA Feature Group Indicator 4", HFILL }},
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};
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/* List of subtrees */
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static gint *ett[] = {
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&ett_rrc,
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#include "packet-rrc-ettarr.c"
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&ett_rrc_eutraFeatureGroupIndicators,
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&ett_rrc_cn_CommonGSM_MAP_NAS_SysInfo,
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};
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/* Register protocol */
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proto_rrc = proto_register_protocol(PNAME, PSNAME, PFNAME);
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/* Register fields and subtrees */
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proto_register_field_array(proto_rrc, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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register_dissector("rrc", dissect_rrc, proto_rrc);
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#include "packet-rrc-dis-reg.c"
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register_init_routine(rrc_init);
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}
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/*--- proto_reg_handoff_rrc ---------------------------------------*/
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void
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proto_reg_handoff_rrc(void)
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{
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gsm_a_dtap_handle = find_dissector("gsm_a_dtap");
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rrc_pcch_handle = find_dissector("rrc.pcch");
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rrc_ul_ccch_handle = find_dissector("rrc.ul.ccch");
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rrc_dl_ccch_handle = find_dissector("rrc.dl.ccch");
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rrc_ul_dcch_handle = find_dissector("rrc.ul.dcch");
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rrc_dl_dcch_handle = find_dissector("rrc.dl.dcch");
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rrc_ue_radio_access_cap_info_handle = find_dissector("rrc.ue_radio_access_cap_info");
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rrc_dl_dcch_handle = find_dissector("rrc.dl.dcch");
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lte_rrc_ue_eutra_cap_handle = find_dissector("lte-rrc.ue_eutra_cap");
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lte_rrc_dl_dcch_handle = find_dissector("lte-rrc.dl.dcch");
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rrc_bcch_fach_handle = find_dissector("rrc.bcch.fach");
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gsm_rlcmac_dl_handle = find_dissector("gsm_rlcmac_dl");
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}
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