/* packet-rrc.c * Routines for Universal Mobile Telecommunications System (UMTS); * Radio Resource Control (RRC) protocol specification * (3GPP TS 25.331 packet dissection * Copyright 2006-2010, Anders Broman * * $Id$ * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * Ref: 3GPP TS 25.331 V11.4.0 (2012-12) */ /** * * TODO: * - Fix ciphering information for circuit switched stuff */ #include "config.h" #include #include #include #include #include #include "packet-ber.h" #include "packet-per.h" #include "packet-rrc.h" #include "packet-gsm_a_common.h" #include "packet-umts_fp.h" #ifdef _MSC_VER /* disable: "warning C4049: compiler limit : terminating line number emission" */ #pragma warning(disable:4049) /* disable: "warning C4146: unary minus operator applied to unsigned type, result still unsigned" */ #pragma warning(disable:4146) #endif #define PNAME "Radio Resource Control (RRC) protocol" #define PSNAME "RRC" #define PFNAME "rrc" extern int proto_fp; /*Handler to FP*/ GTree * hsdsch_muxed_flows = NULL; GTree * rrc_ciph_inf = NULL; static int msg_type _U_; static dissector_handle_t gsm_a_dtap_handle; static dissector_handle_t rrc_ue_radio_access_cap_info_handle=NULL; static dissector_handle_t rrc_pcch_handle=NULL; static dissector_handle_t rrc_ul_ccch_handle=NULL; static dissector_handle_t rrc_dl_ccch_handle=NULL; static dissector_handle_t rrc_ul_dcch_handle=NULL; static dissector_handle_t rrc_dl_dcch_handle=NULL; static dissector_handle_t rrc_bcch_fach_handle=NULL; static dissector_handle_t lte_rrc_ue_eutra_cap_handle=NULL; static dissector_handle_t lte_rrc_dl_dcch_handle=NULL; static dissector_handle_t gsm_rlcmac_dl_handle=NULL; enum nas_sys_info_gsm_map { RRC_NAS_SYS_INFO_CS, RRC_NAS_SYS_INFO_PS, RRC_NAS_SYS_INFO_CN_COMMON }; static guint32 rrc_nas_sys_info_gsm_map_type = RRC_NAS_SYS_INFO_CN_COMMON; /* Forward declarations */ static int dissect_UE_RadioAccessCapabilityInfo_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *); static int dissect_SysInfoTypeSB1_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *); static int dissect_SysInfoTypeSB2_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *); static int dissect_SysInfoType5_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *); static int dissect_SysInfoType11_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *); static int dissect_SysInfoType11bis_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *); static int dissect_SysInfoType22_PDU(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *); /* Include constants */ #include "packet-rrc-val.h" /* Initialize the protocol and registered fields */ int proto_rrc = -1; static int hf_test; #include "packet-rrc-hf.c" /* Initialize the subtree pointers */ static int ett_rrc = -1; #include "packet-rrc-ett.c" static gint ett_rrc_eutraFeatureGroupIndicators = -1; static gint ett_rrc_cn_CommonGSM_MAP_NAS_SysInfo = -1; /* Global variables */ static proto_tree *top_tree; static int hf_rrc_eutra_feat_group_ind_1 = -1; static int hf_rrc_eutra_feat_group_ind_2 = -1; static int hf_rrc_eutra_feat_group_ind_3 = -1; static int hf_rrc_eutra_feat_group_ind_4 = -1; static const true_false_string rrc_eutra_feat_group_ind_1_val = { "UTRA CELL_PCH to EUTRA RRC_IDLE cell reselection - Supported", "UTRA CELL_PCH to EUTRA RRC_IDLE cell reselection - Not supported" }; static const true_false_string rrc_eutra_feat_group_ind_2_val = { "EUTRAN measurements and reporting in connected mode - Supported", "EUTRAN measurements and reporting in connected mode - Not supported" }; static const true_false_string rrc_eutra_feat_group_ind_3_val = { "UTRA CELL_FACH absolute priority cell reselection for high priority layers - Supported", "UTRA CELL_FACH absolute priority cell reselection for high priority layers - Not supported" }; static const true_false_string rrc_eutra_feat_group_ind_4_val = { "UTRA CELL_FACH absolute priority cell reselection for all layers - Supported", "UTRA CELL_FACH absolute priority cell reselection for all layers - Not supported" }; static int flowd,type; static int cipher_start_val[2] _U_; /*Stores how many channels we have detected for a HS-DSCH MAC-flow*/ #define RRC_MAX_NUM_HSDHSCH_MACDFLOW 8 static guint8 num_chans_per_flow[RRC_MAX_NUM_HSDHSCH_MACDFLOW]; static int rbid; static int activation_frame; /** * Return the maximum counter, useful for initiating counters */ #if 0 static int get_max_counter(int com_context){ int i; guint32 max = 0; rrc_ciphering_info * c_inf; if( (c_inf = g_tree_lookup(rrc_ciph_inf, GINT_TO_POINTER((gint)com_context))) == NULL ){ return 0; } for(i = 0; i<31; i++){ max = MAX(c_inf->ps_conf_counters[i][0], max); max = MAX(c_inf->ps_conf_counters[i][1], max); } return max; } #endif /** Utility functions used for various comparisons/cleanups in tree **/ gint rrc_key_cmp(gconstpointer b_ptr, gconstpointer a_ptr, gpointer ignore _U_){ if( GPOINTER_TO_INT(a_ptr) > GPOINTER_TO_INT(b_ptr) ){ return -1; } return GPOINTER_TO_INT(a_ptr) < GPOINTER_TO_INT(b_ptr); } void rrc_free_key(gpointer key _U_){ /*Keys should be de allocated elsewhere.*/ } void rrc_free_value(gpointer value ){ g_free(value); } #include "packet-rrc-fn.c" #include "packet-rrc.h" static void dissect_rrc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { /* FIX ME Currently don't know the 'starting point' of this protocol * exported DL-DCCH-Message is the entry point. */ proto_item *rrc_item = NULL; proto_tree *rrc_tree = NULL; struct rrc_info *rrcinf; top_tree = tree; rrcinf = p_get_proto_data(pinfo->fd, proto_rrc); /* make entry in the Protocol column on summary display */ col_set_str(pinfo->cinfo, COL_PROTOCOL, "RRC"); /*Clear memory*/ memset(num_chans_per_flow,0,sizeof(guint8)*RRC_MAX_NUM_HSDHSCH_MACDFLOW); /* create the rrc protocol tree */ rrc_item = proto_tree_add_item(tree, proto_rrc, tvb, 0, -1, ENC_NA); rrc_tree = proto_item_add_subtree(rrc_item, ett_rrc); if (rrcinf) { switch (rrcinf->msgtype[pinfo->fd->subnum]) { case RRC_MESSAGE_TYPE_PCCH: call_dissector(rrc_pcch_handle, tvb, pinfo, rrc_tree); break; case RRC_MESSAGE_TYPE_UL_CCCH: call_dissector(rrc_ul_ccch_handle, tvb, pinfo, rrc_tree); break; case RRC_MESSAGE_TYPE_DL_CCCH: call_dissector(rrc_dl_ccch_handle, tvb, pinfo, rrc_tree); break; case RRC_MESSAGE_TYPE_UL_DCCH: call_dissector(rrc_ul_dcch_handle, tvb, pinfo, rrc_tree); break; case RRC_MESSAGE_TYPE_DL_DCCH: call_dissector(rrc_dl_dcch_handle, tvb, pinfo, rrc_tree); break; case RRC_MESSAGE_TYPE_BCCH_FACH: call_dissector(rrc_bcch_fach_handle, tvb, pinfo, rrc_tree); break; default: ; } } } void rrc_init(void){ /*Cleanup*/ if(hsdsch_muxed_flows){ g_tree_destroy(hsdsch_muxed_flows); } if(rrc_ciph_inf){ g_tree_destroy(rrc_ciph_inf); } /*Initialize structure for muxed flow indication*/ hsdsch_muxed_flows = g_tree_new_full(rrc_key_cmp, NULL, /* data pointer, optional */ rrc_free_key, rrc_free_value); /*Initialize structure for muxed flow indication*/ rrc_ciph_inf = g_tree_new_full(rrc_key_cmp, NULL, /* data pointer, optional */ NULL, rrc_free_value); } /*--- proto_register_rrc -------------------------------------------*/ void proto_register_rrc(void) { /* List of fields */ static hf_register_info hf[] = { #include "packet-rrc-hfarr.c" { &hf_test, { "RAB Test", "rrc.RAB.test", FT_UINT8, BASE_DEC, NULL, 0, "rrc.RAB_Info_r6", HFILL }}, { &hf_rrc_eutra_feat_group_ind_1, { "Indicator 1", "rrc.eutra_feat_group_ind_1", FT_BOOLEAN, BASE_NONE, TFS(&rrc_eutra_feat_group_ind_1_val), 0, "EUTRA Feature Group Indicator 1", HFILL }}, { &hf_rrc_eutra_feat_group_ind_2, { "Indicator 2", "rrc.eutra_feat_group_ind_2", FT_BOOLEAN, BASE_NONE, TFS(&rrc_eutra_feat_group_ind_2_val), 0, "EUTRA Feature Group Indicator 2", HFILL }}, { &hf_rrc_eutra_feat_group_ind_3, { "Indicator 3", "rrc.eutra_feat_group_ind_3", FT_BOOLEAN, BASE_NONE, TFS(&rrc_eutra_feat_group_ind_3_val), 0, "EUTRA Feature Group Indicator 3", HFILL }}, { &hf_rrc_eutra_feat_group_ind_4, { "Indicator 4", "rrc.eutra_feat_group_ind_4", FT_BOOLEAN, BASE_NONE, TFS(&rrc_eutra_feat_group_ind_4_val), 0, "EUTRA Feature Group Indicator 4", HFILL }}, }; /* List of subtrees */ static gint *ett[] = { &ett_rrc, #include "packet-rrc-ettarr.c" &ett_rrc_eutraFeatureGroupIndicators, &ett_rrc_cn_CommonGSM_MAP_NAS_SysInfo, }; /* Register protocol */ proto_rrc = proto_register_protocol(PNAME, PSNAME, PFNAME); /* Register fields and subtrees */ proto_register_field_array(proto_rrc, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); register_dissector("rrc", dissect_rrc, proto_rrc); #include "packet-rrc-dis-reg.c" register_init_routine(rrc_init); } /*--- proto_reg_handoff_rrc ---------------------------------------*/ void proto_reg_handoff_rrc(void) { gsm_a_dtap_handle = find_dissector("gsm_a_dtap"); rrc_pcch_handle = find_dissector("rrc.pcch"); rrc_ul_ccch_handle = find_dissector("rrc.ul.ccch"); rrc_dl_ccch_handle = find_dissector("rrc.dl.ccch"); rrc_ul_dcch_handle = find_dissector("rrc.ul.dcch"); rrc_dl_dcch_handle = find_dissector("rrc.dl.dcch"); rrc_ue_radio_access_cap_info_handle = find_dissector("rrc.ue_radio_access_cap_info"); rrc_dl_dcch_handle = find_dissector("rrc.dl.dcch"); lte_rrc_ue_eutra_cap_handle = find_dissector("lte-rrc.ue_eutra_cap"); lte_rrc_dl_dcch_handle = find_dissector("lte-rrc.dl.dcch"); rrc_bcch_fach_handle = find_dissector("rrc.bcch.fach"); gsm_rlcmac_dl_handle = find_dissector("gsm_rlcmac_dl"); }