forked from osmocom/wireshark
2eb7b05b8c
Similar to the "tcp.port" changes in I99604f95d426ad345f4b494598d94178b886eb67, convert dissectors that use "udp.port". More cleanup done on dissectors that use both TCP and UDP dissector tables, so that less preference callbacks exist. Change-Id: If07be9b9e850c244336a7069599cd554ce312dd3 Reviewed-on: https://code.wireshark.org/review/18120 Petri-Dish: Michael Mann <mmann78@netscape.net> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Michael Mann <mmann78@netscape.net>
965 lines
31 KiB
C
965 lines
31 KiB
C
/* packet-a21.c
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*
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* Routines for A21/s102 Message dissection
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* Copyright 2012, Joseph Chai <chaienzhao@gmail.com>
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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: 3GPP2 A.S0008-C v4.0
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/expert.h>
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#include "packet-e212.h"
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#include "packet-a21.h"
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void proto_register_a21(void);
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void proto_reg_handoff_a21(void);
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#define A21_PORT 23272
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static dissector_handle_t gcsna_handle = NULL;
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static int proto_a21 = -1;
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static int hf_a21_message_type = -1;
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static int hf_a21_corr_id = -1;
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static int hf_a21_element_identifier = -1;
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static int hf_a21_element_length = -1;
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static int hf_a21_corr_id_corr_value = -1;
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static int hf_a21_mn_id_msid_value = -1;
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static int hf_a21_mn_id_odd_even_indicator = -1;
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static int hf_a21_mn_id_type_of_identity = -1;
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static int hf_a21_mn_id_esn = -1;
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static int hf_a21_mn_id_identity_digit_1 = -1;
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static int hf_a21_gcsna_pdu_length = -1;
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static int hf_a21_gcsna_content = -1;
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static int hf_a21_reference_cell_id_cell = -1;
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static int hf_a21_reference_cell_id_sector = -1;
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static int hf_a21_mob_sub_info_record_id = -1;
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static int hf_a21_mob_sub_info_record_length = -1;
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static int hf_a21_mob_sub_info_record_content = -1;
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static int hf_a21_mob_sub_info_re_con_all_band_inc = -1;
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static int hf_a21_mob_sub_info_re_con_curr_band_sub = -1;
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static int hf_a21_mob_sub_info_re_band_class = -1;
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static int hf_a21_mob_sub_info_re_con_all_sub_band_inc = -1;
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static int hf_a21_mob_sub_info_re_sub_cls_len = -1;
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/*
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static int hf_a21_mob_sub_info_re_con_band_class = -1;
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*/
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static int hf_a21_auth_chall_para_rand_num_type = -1;
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static int hf_a21_auth_chall_para_rand_value = -1;
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static int hf_a21_service_option = -1;
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static int hf_a21_gcsna_status_reserved = -1;
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static int hf_a21_gcsna_status_priority_incl = -1;
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static int hf_a21_gcsna_status_gec = -1;
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static int hf_a21_gcsna_status_status_incl = -1;
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static int hf_a21_gcsna_status = -1;
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static int hf_a21_gcsna_status_call_priority = -1;
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static int hf_a21_3G1X_parameters = -1;
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static int hf_a21_reserved = -1;
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static int hf_a21_msg_tran_ctrl_paging_msg = -1;
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static int hf_a21_msg_tran_ctrl_simul_xmit_with_next = -1;
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static int hf_a21_msg_tran_ctrl_ackrequired = -1;
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static int hf_a21_msg_tran_ctrl_3GXLogicalChannel = -1;
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static int hf_a21_msg_tran_ctrl_protocol_revision = -1;
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static int hf_a21_1x_lac_en_pdu = -1;
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static int hf_a21_pilot_list_num_of_pilots = -1;
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static int hf_a21_pilot_list_value = -1;
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static int hf_a21_cause_value = -1;
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static int hf_a21_mscid_market_id = -1;
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static int hf_a21_mscid_switch_number = -1;
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static int hf_a21_event = -1;
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static int hf_a21_additional_event_info = -1;
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static int hf_a21_allowed_forward_link_message = -1;
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static gint ett_a21 = -1;
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static gint ett_a21_ie = -1;
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static gint ett_a21_corr_id = -1;
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static gint ett_a21_record_content = -1;
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static expert_field ei_a21_ie_data_not_dissected_yet = EI_INIT;
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static const value_string a21_message_type_vals[] = {
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{0x01, "A21-1x Air Interface Signalling"}, /* 01H */
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{0x02, "A21-Ack"}, /* 02H */
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{0x03, "A21-1x Parameters"}, /* 03H */
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{0x04, "A21-Event Notification"}, /* 04H */
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{0x05, "A21-1x Parameters Request"}, /* 05H */
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{0x06, "A21-Service Request"}, /* 06H */
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{0x07, "A21-Service Response"}, /* 07H */
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{0x08, "A21-Radio Update Request"}, /* 08H */
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{0x09, "A21-Radio Update Response"}, /* 09H */
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{0, NULL}
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};
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#define A21_IEI_1X_LAC_ENCAPSULATED_PDU 0x01 /* 01H */
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#define A21_IEI_A21_1X_PARAMETERS 0x02 /* 02H */
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#define A21_IEI_PILOT_LIST 0x03 /* 03H */
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#define A21_IEI_CORRELATION_ID 0x04 /* 04H */
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#define A21_IEI_MOBILE_IDENTITY 0x05 /* 05H */
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#define A21_IEI_AUTHENTICATION_CHALLENGE_PARAMETER 0x06 /* 06H */
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#define A21_IEI_A21_1X_MESSAGE_TRANSMISSION_CONTROL 0x07 /* 07H */
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#define A21_IEI_A21_CAUSE 0x08 /* 08H */
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#define A21_IEI_A21_EVENT 0x09 /* 09H */
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#define A21_IEI_SERVICE_OPTION 0x0A /* 0AH */
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#define A21_IEI_A21_MOBILE_SUBSCRIPTION_INFORMATION 0x0B /* 0BH */
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#define A21_IEI_GCSNA_STATUS 0x0C /* 0CH */
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#define A21_IEI_GCSNA_PDU 0xC0 /* C0H */
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#define A21_IEI_REFERENCE_CELL_ID 0x0D /* 0DH */
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/*(Reserved range of IEIs for S102) 30H-3FH */
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static void
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dissect_a21_correlation_id(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length _U_, guint8 message_type _U_)
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{
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int offset = 0;
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proto_item *tc;
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proto_tree *corr_tree;
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if (tree == NULL)
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return;
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tc = proto_tree_add_item(tree, hf_a21_corr_id, tvb, offset, 6, ENC_BIG_ENDIAN);
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corr_tree = proto_item_add_subtree(tc,ett_a21_corr_id);
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proto_tree_add_item(corr_tree, hf_a21_element_identifier, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(corr_tree, hf_a21_element_length, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(corr_tree, hf_a21_corr_id_corr_value, tvb, offset, 4, ENC_BIG_ENDIAN);
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/* offset += 4; */
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}
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static const value_string a21_mn_id_type_of_identity_vals[] = {
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{ 0, "No Identity Code" },
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{ 1, "MEID" },
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{ 5, "ESN" },
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{ 6, "IMSI" },
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{ 0, NULL }
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};
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/* 5.2.4.8 Mobile Identity (MN ID) */
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static void
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dissect_a21_mobile_identity(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *item, guint16 length, guint8 message_type _U_)
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{
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int offset = 0;
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guint identity_type;
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const gchar *imsi_str;
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if (tree == NULL)
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return;
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identity_type = tvb_get_guint8(tvb, offset) & 0x07;
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proto_tree_add_item(tree, hf_a21_mn_id_type_of_identity, tvb, offset, 1, ENC_BIG_ENDIAN);
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switch (identity_type) {
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case 0:
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/* No Identity Code */
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proto_tree_add_item(tree, hf_a21_mn_id_msid_value, tvb, offset, 1, ENC_BIG_ENDIAN);
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/* offset++; */
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break;
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case 1:
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/* MEID */
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proto_tree_add_item(tree, hf_a21_mn_id_odd_even_indicator, tvb, offset, 1, ENC_BIG_ENDIAN);
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/* offset++; */
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break;
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case 5:
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/* ESN */
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proto_tree_add_item(tree, hf_a21_mn_id_odd_even_indicator, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_a21_mn_id_identity_digit_1, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_a21_mn_id_esn, tvb, offset, 1, ENC_BIG_ENDIAN);
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/* offset++; */
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break;
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case 6:
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/* IMSI */
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proto_tree_add_item(tree, hf_a21_mn_id_odd_even_indicator, tvb, offset, 1, ENC_BIG_ENDIAN);
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imsi_str = dissect_e212_imsi(tvb, pinfo, tree, offset, length, TRUE);
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proto_item_append_text(item, "%s", imsi_str);
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break;
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}
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}
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static void
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dissect_a21_1x_message_transmission_control(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length _U_, guint8 message_type _U_)
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{
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int offset = 0;
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if (tree == NULL)
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return;
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proto_tree_add_item(tree, hf_a21_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_a21_msg_tran_ctrl_paging_msg, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_a21_msg_tran_ctrl_simul_xmit_with_next, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_a21_msg_tran_ctrl_ackrequired, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_a21_msg_tran_ctrl_3GXLogicalChannel, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_a21_msg_tran_ctrl_protocol_revision, tvb, offset, 1, ENC_BIG_ENDIAN);
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/* offset++; */
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}
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static void
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dissect_a21_1x_lac_encapsulated_pdu(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length _U_, guint8 message_type _U_)
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{
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int offset = 0;
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proto_tree_add_item(tree, hf_a21_1x_lac_en_pdu, tvb, offset, 3, ENC_BIG_ENDIAN);
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/* offset += 3; */
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}
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/* 5.2.4.5 A21 1x Parameters */
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static void
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dissect_a21_1x_parameters(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length, guint8 message_type _U_)
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{
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proto_tree_add_item(tree, hf_a21_3G1X_parameters, tvb, 0,length, ENC_NA);
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}
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static void
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dissect_a21_pilot_list(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length, guint8 message_type _U_)
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{
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int offset = 0;
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guint8 num;
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num = tvb_get_guint8(tvb, offset);
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proto_tree_add_item(tree, hf_a21_pilot_list_num_of_pilots, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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if (num>0) {
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proto_tree_add_item(tree, hf_a21_pilot_list_value, tvb, offset, length-1, ENC_NA);
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/* offset += (length-1); */
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}
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}
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static const range_string a21_random_number_type_rvals[] = {
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{0x00, 0x00, "Reserved"},
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{0x01, 0x01, "RAND"},
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{0x02, 0x0F, "Reserved"},
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{0, 0, NULL}
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};
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static void
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dissect_a21_authentication_challenge_parameter(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length _U_, guint8 message_type _U_)
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{
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int offset = 0;
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guint type;
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if (tree == NULL)
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return;
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type = tvb_get_guint8(tvb, offset) & 0x0f;
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proto_tree_add_item(tree, hf_a21_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_a21_auth_chall_para_rand_num_type, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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switch (type) {
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case 1:
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proto_tree_add_item(tree, hf_a21_auth_chall_para_rand_value, tvb, offset, 4, ENC_BIG_ENDIAN);
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/*offset += 4;*/
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break;
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}
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}
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/* 5.2.4.14 A21 Mobile Subscription Information */
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static const value_string a21_record_identifier_vals[] = {
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{0x00, "Band Class/Band Subclass Record"},
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/* All other values are reserved */
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{0, NULL}
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};
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static void
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dissect_a21_mobile_subscription_information(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length, guint8 message_type _U_)
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{
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int offset = 0;
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int i = 0;
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guint8 record_id;
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guint16 record_len = 0;
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proto_tree *record_tree;
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if (tree == NULL)
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return;
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while (offset<length) {
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record_id = tvb_get_guint8(tvb, offset);
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record_len = tvb_get_guint8(tvb, offset+1);
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record_tree = proto_tree_add_subtree_format(tree, tvb, offset+2, record_len,
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ett_a21_record_content, NULL, "Record %u",i+1);
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proto_tree_add_item(record_tree, hf_a21_mob_sub_info_record_id, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(record_tree, hf_a21_mob_sub_info_record_length, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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if (record_id == 0) {
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proto_tree_add_item(record_tree, hf_a21_mob_sub_info_re_con_all_band_inc, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(record_tree, hf_a21_mob_sub_info_re_con_curr_band_sub, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(record_tree, hf_a21_mob_sub_info_re_band_class, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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proto_tree_add_item(record_tree, hf_a21_mob_sub_info_re_con_all_sub_band_inc, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(record_tree, hf_a21_mob_sub_info_re_sub_cls_len, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += record_len-2;
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} else {
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proto_tree_add_item(record_tree, hf_a21_mob_sub_info_record_content, tvb, offset, record_len, ENC_NA);
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offset += record_len;
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}
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}
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}
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static const value_string a21_gcsna_status_vals[] = {
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{0x01, "Handoff successful"},
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{0x02, "Handoff failure"},
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/* All other values are reserved */
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{0, NULL}
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};
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static void
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dissect_a21_gcsna_status(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length _U_, guint8 message_type _U_)
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{
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int offset = 0;
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guint8 priority_incl, status_incl;
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if (tree == NULL)
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return;
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status_incl = tvb_get_guint8(tvb, offset) & 0x01;
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priority_incl = tvb_get_guint8(tvb, offset) & 0x04;
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proto_tree_add_item(tree, hf_a21_gcsna_status_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_a21_gcsna_status_priority_incl, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_a21_gcsna_status_gec, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_a21_gcsna_status_status_incl, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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if (status_incl == 1) {
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proto_tree_add_item(tree, hf_a21_gcsna_status, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset++;
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}
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if (priority_incl == 1) {
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proto_tree_add_item(tree, hf_a21_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(tree, hf_a21_gcsna_status_call_priority, tvb, offset, 1, ENC_BIG_ENDIAN);
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}
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}
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/* 5.2.4.16 GCSNA PDU */
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static void
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dissect_a21_gcsna_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *top_tree, proto_tree *tree, proto_item *item _U_, guint16 length, guint8 message_type _U_)
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{
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int offset = 0;
|
|
|
|
proto_tree_add_item(tree, hf_a21_gcsna_content, tvb, offset, length, ENC_NA);
|
|
if (gcsna_handle) {
|
|
tvbuff_t *new_tvb;
|
|
new_tvb = tvb_new_subset_length(tvb, offset, length);
|
|
/* call the dissector with the parent (top)tree */
|
|
call_dissector(gcsna_handle, new_tvb, pinfo, top_tree);
|
|
}
|
|
|
|
}
|
|
|
|
/* 5.2.4.17 Reference Cell ID */
|
|
static void
|
|
dissect_a21_reference_cell_id(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length _U_, guint8 message_type _U_)
|
|
{
|
|
int offset = 0;
|
|
|
|
if (tree == NULL)
|
|
return;
|
|
proto_tree_add_item(tree, hf_a21_mscid_market_id, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
proto_tree_add_item(tree, hf_a21_mscid_switch_number, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset += 1;
|
|
|
|
proto_tree_add_item(tree, hf_a21_reference_cell_id_cell, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
proto_tree_add_item(tree, hf_a21_reference_cell_id_sector, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
/* offset++; */
|
|
|
|
}
|
|
|
|
static const value_string a21_cause_vals[] = {
|
|
{0x00, "Unknown mobile"},
|
|
{0x01, "Unknown cell identifier(s)"},
|
|
{0x02, "Tunneling of 1x messages not available"},
|
|
{0x03, "Resources not available"},
|
|
{0x04, "A21 context for this MS/AT may be released"},
|
|
{0x05, "Airlink lost"},
|
|
{0x06, "Abort Handoff from HRPD to 1x"},
|
|
{0x07, "Unspecified"},
|
|
{0x08, "Rejection"},
|
|
{0x09, "Already Paging"},
|
|
{0x0A, "Abort handoff from LTE to 1x"},
|
|
{0x0B, "Version not supported"},
|
|
/* All other values are reserved */
|
|
{0, NULL}
|
|
};
|
|
|
|
|
|
static void
|
|
dissect_a21_cause(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length _U_, guint8 message_type _U_)
|
|
{
|
|
int offset = 0;
|
|
|
|
proto_tree_add_item(tree, hf_a21_cause_value, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
/* offset++; */
|
|
}
|
|
|
|
static const value_string a21_event_vals[] = {
|
|
{0x00, "MS/AT present in 1x"},
|
|
{0x01, "MS/AT present in HRPD/Cancel Handoff"},
|
|
{0x02, "1x Power Down"},
|
|
{0x03, "HRPD Power Down/Connection Closed"},
|
|
{0x04, "Handoff Rejected"},
|
|
{0x05, "1x Registration"},
|
|
{0x06, "Transmission of All 1x LAC Encapsulated PDUs Disabled"},
|
|
{0x07, "Transmission of 1x LAC Encapsulated PDU(s) Enabled"},
|
|
{0x08, "MS/AT no longer present in this AN/PCF"},
|
|
{0x09, "MS/AT no longer present in this 1x BS"},
|
|
{0x0A, "MS/AT Not Acquired"},
|
|
{0x0B, "Redirection"},
|
|
/* All other values are reserved */
|
|
{0, NULL}
|
|
};
|
|
|
|
static const value_string a21_additional_event_info_vals[] = {
|
|
{0x00, "This field shall not be included"},
|
|
{0x01, "This field shall not be included"},
|
|
{0x02, "This field shall not be included"},
|
|
{0x03, "This field shall not be included"},
|
|
{0x04, "This field shall not be included"},
|
|
{0x05, "This field shall not be included"},
|
|
{0x06, "This field shall not be included"},
|
|
{0x07, "This field shall contain the variable length AllowedForwardLinkMessages negotiated by the HRPD AN and the AT"},
|
|
/* All other values, This field shall not be included */
|
|
{0, NULL}
|
|
};
|
|
|
|
|
|
static void
|
|
dissect_a21_event(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item, guint16 length, guint8 message_type _U_)
|
|
{
|
|
int offset = 0;
|
|
guint8 event_id;
|
|
|
|
if (tree == NULL)
|
|
return;
|
|
event_id = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(tree, hf_a21_event, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_item_append_text(item, "%s", val_to_str_const(event_id, a21_event_vals, "Unknown"));
|
|
offset++;
|
|
if (length>1) {
|
|
if (event_id == 7) {
|
|
proto_tree_add_item(tree, hf_a21_allowed_forward_link_message, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
/*offset += 2;*/
|
|
}
|
|
else {
|
|
proto_tree_add_item(tree, hf_a21_additional_event_info, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
/*offset += 2;*/
|
|
}
|
|
}
|
|
|
|
|
|
}
|
|
|
|
static const value_string a21_service_option_vals[] = {
|
|
{0x003B, "HRPD Packet Data"},
|
|
/*{0x59xx, "HRPD Packet Data with ReservationLabel where xx = [00-FFH] and contains the ReservationLabel"},*/
|
|
{0, NULL}
|
|
};
|
|
|
|
|
|
/* 5.2.4.13 Service Option */
|
|
static void
|
|
dissect_a21_service_option(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, proto_item *item _U_, guint16 length _U_, guint8 message_type _U_)
|
|
{
|
|
int offset = 0;
|
|
|
|
proto_tree_add_item(tree, hf_a21_service_option, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
/* offset += 2; */
|
|
|
|
}
|
|
|
|
static void
|
|
dissect_a21_unknown(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *item _U_, guint16 length, guint8 message_type _U_)
|
|
{
|
|
proto_tree_add_expert(tree, pinfo, &ei_a21_ie_data_not_dissected_yet, tvb, 0, length);
|
|
}
|
|
|
|
static const value_string a21_element_type_vals[] = {
|
|
{0x01, "1x LAC Encapsulated PDU"},
|
|
{0x02, "A21 1x Parameters"},
|
|
{0x03, "Pilot List"},
|
|
{0x04, "Correlation ID"},
|
|
{0x05, "Mobile Identity (MN ID)"},
|
|
{0x06, "Authentication Challenge Parameter (RAND)"},
|
|
{0x07, "A21 1x Message Transmission Control"},
|
|
{0x08, "A21 Cause"},
|
|
{0x09, "A21 Event"},
|
|
{0x0A, "Service Option"},
|
|
{0x0B, "A21 Mobile Subscription Information"},
|
|
{0x0C, "GCSNA Status"},
|
|
{0x0D, "Reference Cell ID"},
|
|
{0xC0, "GCSNA PDU"},
|
|
{0, NULL}
|
|
};
|
|
|
|
|
|
void
|
|
dissect_a21_ie_common(tvbuff_t *tvb, packet_info *pinfo, proto_tree *top_tree, proto_tree *tree, gint offset, guint8 message_type)
|
|
{
|
|
guint8 ie_type, length_len;
|
|
guint16 length = 0;
|
|
tvbuff_t *ie_tvb;
|
|
proto_tree *ie_tree;
|
|
proto_item *ti;
|
|
|
|
while (offset < (gint)tvb_reported_length(tvb)) {
|
|
ie_type = tvb_get_guint8(tvb, offset);
|
|
if (ie_type == A21_IEI_GCSNA_PDU) {
|
|
/* length of GCSNA PDU is 2 octets long */
|
|
length_len = 2;
|
|
length = tvb_get_ntohs(tvb, offset+1);
|
|
} else {
|
|
/* Octet 2-length */
|
|
length_len = 1;
|
|
length = tvb_get_guint8(tvb, offset+1);
|
|
}
|
|
|
|
ie_tree = proto_tree_add_subtree_format(tree, tvb, offset, 1 + length_len + length, ett_a21_ie, &ti,
|
|
"%s : ", val_to_str_const(ie_type, a21_element_type_vals, "Unknown"));
|
|
|
|
/* Octet 1-element identifier */
|
|
proto_tree_add_item(ie_tree, hf_a21_element_identifier, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
proto_tree_add_item(ie_tree, hf_a21_gcsna_pdu_length, tvb, offset, length_len, ENC_BIG_ENDIAN);
|
|
offset = offset+length_len;
|
|
|
|
ie_tvb = tvb_new_subset_remaining(tvb, offset);
|
|
|
|
switch (ie_type) {
|
|
case A21_IEI_1X_LAC_ENCAPSULATED_PDU:
|
|
/* 5.2.4.4 1x LAC Encapsulated PDU */
|
|
dissect_a21_1x_lac_encapsulated_pdu(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_A21_1X_PARAMETERS:
|
|
/* 5.2.4.5 A21 1x Parameters */
|
|
dissect_a21_1x_parameters(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_PILOT_LIST:
|
|
/* 5.2.4.6 Pilot List */
|
|
dissect_a21_pilot_list(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_CORRELATION_ID:
|
|
/* 5.2.4.7 Correlation ID */
|
|
dissect_a21_correlation_id(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_MOBILE_IDENTITY:
|
|
/* 5.2.4.8 Mobile Identity (MN ID) */
|
|
dissect_a21_mobile_identity(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_AUTHENTICATION_CHALLENGE_PARAMETER:
|
|
/* 5.2.4.9 Authentication Challenge Parameter (RAND) */
|
|
dissect_a21_authentication_challenge_parameter(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_A21_1X_MESSAGE_TRANSMISSION_CONTROL:
|
|
/* 5.2.4.10 A21 1x Message Transmission Control */
|
|
dissect_a21_1x_message_transmission_control(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_A21_CAUSE:
|
|
/* 5.2.4.11 A21 Cause */
|
|
dissect_a21_cause(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_A21_EVENT:
|
|
/* 5.2.4.12 A21 Event */
|
|
dissect_a21_event(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_SERVICE_OPTION:
|
|
/* 5.2.4.13 Service Option */
|
|
dissect_a21_service_option(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_A21_MOBILE_SUBSCRIPTION_INFORMATION:
|
|
/* 5.2.4.14 A21 Mobile Subscription Information */
|
|
dissect_a21_mobile_subscription_information(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_GCSNA_STATUS:
|
|
/* 5.2.4.15 GCSNA Status */
|
|
dissect_a21_gcsna_status(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_GCSNA_PDU:
|
|
/* 5.2.4.16 GCSNA PDU */
|
|
dissect_a21_gcsna_pdu(ie_tvb,pinfo, top_tree, ie_tree, ti, length, message_type);
|
|
break;
|
|
case A21_IEI_REFERENCE_CELL_ID:
|
|
/* 5.2.4.17 Reference Cell ID */
|
|
dissect_a21_reference_cell_id(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
default:
|
|
dissect_a21_unknown(ie_tvb,pinfo, ie_tree, ti, length, message_type);
|
|
break;
|
|
}
|
|
offset = offset + length;
|
|
}
|
|
}
|
|
|
|
|
|
static int
|
|
dissect_a21(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
guint8 message_type;
|
|
int offset = 0;
|
|
proto_item *ti, *tc;
|
|
proto_tree *a21_tree, *corr_tree;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "A21");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
/* Message header is 7 octet long
|
|
* Octet 1 consists of message type
|
|
* Octets 2-7 contain the Correlation Identifier.
|
|
*/
|
|
|
|
message_type = tvb_get_guint8(tvb, offset);
|
|
col_set_str(pinfo->cinfo, COL_INFO, val_to_str_const(message_type, a21_message_type_vals, "Unknown"));
|
|
|
|
ti = proto_tree_add_protocol_format(tree, proto_a21, tvb, 0, -1,
|
|
"A21 Protocol: %s",
|
|
val_to_str_const(message_type, a21_message_type_vals, "Unknown"));
|
|
a21_tree = proto_item_add_subtree(ti, ett_a21);
|
|
|
|
/* message type in Octet 1 */
|
|
proto_tree_add_item(a21_tree, hf_a21_message_type, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
/* Correlation Identifier in Octets 2-7 */
|
|
tc = proto_tree_add_item(a21_tree, hf_a21_corr_id, tvb, offset, 6, ENC_BIG_ENDIAN);
|
|
corr_tree = proto_item_add_subtree(tc,ett_a21_corr_id);
|
|
|
|
proto_tree_add_item(corr_tree, hf_a21_element_identifier, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
proto_tree_add_item(corr_tree, hf_a21_element_length, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(corr_tree, hf_a21_corr_id_corr_value, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset += 4;
|
|
|
|
dissect_a21_ie_common(tvb, pinfo, tree, a21_tree, offset, message_type);
|
|
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
void proto_register_a21(void)
|
|
{
|
|
static hf_register_info hf_a21[] = {
|
|
{ &hf_a21_message_type,
|
|
{"Message Type", "a21.message_type",
|
|
FT_UINT8, BASE_DEC, VALS(a21_message_type_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_corr_id,
|
|
{"A21 Correlation ID", "a21.correlation_id",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_element_identifier,
|
|
{"A21 Element Identifier", "a21.element_identifier",
|
|
FT_UINT8, BASE_DEC, VALS(a21_element_type_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_element_length,
|
|
{"Length", "a21.length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_corr_id_corr_value,
|
|
{"Correlation Value", "a21.corr_id_corr_value",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mn_id_msid_value,
|
|
{"MSID Value", "a21.mn_id_msid_value",
|
|
FT_UINT8, BASE_DEC, NULL, 0xf8,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mn_id_identity_digit_1,
|
|
{"Identity Digit 1", "a21.mn_id_identity_digit_1",
|
|
FT_UINT8, BASE_DEC, NULL, 0x08,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mn_id_odd_even_indicator,
|
|
{"Odd/Even Indicator", "a21.mn_id_odd_even_indicator",
|
|
FT_UINT8, BASE_DEC, NULL, 0x08,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mn_id_type_of_identity,
|
|
{"Type of Identity", "a21.mn_id_type_of_identity",
|
|
FT_UINT8, BASE_DEC, VALS(a21_mn_id_type_of_identity_vals), 0x07,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mn_id_esn,
|
|
{"ESN", "a21.mn_id_esn",
|
|
FT_UINT8, BASE_DEC, NULL, 0x7f,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_reserved,
|
|
{"Reserved", "a21.reserved",
|
|
FT_UINT8, BASE_DEC, NULL, 0xf0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_msg_tran_ctrl_paging_msg,
|
|
{"Paging Message", "a21.msg_tran_ctrl_paging_msg",
|
|
FT_UINT8, BASE_DEC, NULL, 0x08,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_msg_tran_ctrl_simul_xmit_with_next,
|
|
{"Simul Xmit with Next", "a21.msg_tran_ctrl_simul_xmit_with_next",
|
|
FT_UINT8, BASE_DEC, NULL, 0x04,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_msg_tran_ctrl_ackrequired,
|
|
{"AckRequired", "a21.msg_tran_ctrl_ackrequired",
|
|
FT_UINT8, BASE_DEC, NULL, 0x02,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_msg_tran_ctrl_3GXLogicalChannel,
|
|
{"3GXLogicalChannel", "a21.msg_tran_ctrl_3GXLogicalChannel",
|
|
FT_UINT8, BASE_DEC, NULL, 0x01,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_msg_tran_ctrl_protocol_revision,
|
|
{"ProtocolRevision", "a21.msg_tran_ctrl_protocol_revision",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_1x_lac_en_pdu,
|
|
{"1x LAC Encapsulated PDU", "a21.1x_lac_en_pdu",
|
|
FT_UINT24, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_pilot_list_num_of_pilots,
|
|
{"Number of Pilots", "a21.pilot_list_num_of_pilots",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_pilot_list_value,
|
|
{"Pilot List Value", "a21.pilot_list_value",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_cause_value,
|
|
{"A21 Cause Value", "a21.cause_value",
|
|
FT_UINT8, BASE_DEC, VALS(a21_cause_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mscid_market_id,
|
|
{"Market ID", "a21.mscid_market_id",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mscid_switch_number,
|
|
{"Switch Number", "a21.mscid_switch_number",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_event,
|
|
{"Event", "a21.event",
|
|
FT_UINT8, BASE_DEC, VALS(a21_event_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_additional_event_info,
|
|
{"Additional Event Info", "a21.additional_event_info",
|
|
FT_UINT16, BASE_DEC, VALS(a21_additional_event_info_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_allowed_forward_link_message,
|
|
{"Allowed Forward Link Messages", "a21.allowed_forward_link_message",
|
|
FT_UINT16, BASE_DEC, VALS(a21_additional_event_info_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_gcsna_pdu_length,
|
|
{"Length", "a21.gcsna_pdu_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_gcsna_content,
|
|
{"GCSNA Content", "a21.gcsna_content",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_reference_cell_id_cell,
|
|
{"Cell", "a21.reference_cell_id_cell",
|
|
FT_UINT16, BASE_DEC, NULL, 0xfff0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_reference_cell_id_sector,
|
|
{"Sector", "a21.reference_cell_id_sector",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0f,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mob_sub_info_record_id,
|
|
{"Record Identifier", "a21.mob_sub_info_record_id",
|
|
FT_UINT8, BASE_DEC, VALS(a21_record_identifier_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mob_sub_info_record_length,
|
|
{"Record Length", "a21.mob_sub_info_record_length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mob_sub_info_record_content,
|
|
{"Record Content", "a21.mob_sub_info_record_content",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mob_sub_info_re_con_all_band_inc,
|
|
{"All Band Classes Included", "a21.mob_sub_info_re_con_all_band_inc",
|
|
FT_UINT8, BASE_DEC, NULL, 0x80,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mob_sub_info_re_con_curr_band_sub,
|
|
{"Current Band Subclass", "a21.mob_sub_info_re_con_curr_band_sub",
|
|
FT_UINT8, BASE_DEC, NULL, 0x7f,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mob_sub_info_re_band_class,
|
|
{"Band Class", "a21.mob_sub_info_re_band_class",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mob_sub_info_re_con_all_sub_band_inc,
|
|
{"All Band Subclasses Included", "a21.mob_sub_info_re_con_all_sub_band_inc",
|
|
FT_UINT8, BASE_DEC, NULL, 0x80,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_mob_sub_info_re_sub_cls_len,
|
|
{"Subclass Length", "a21.mob_sub_info_re_sub_cls_len",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0f,
|
|
NULL, HFILL }
|
|
},
|
|
#if 0
|
|
{ &hf_a21_mob_sub_info_re_con_band_class,
|
|
{"Band Class", "a21.mob_sub_info_re_con_band_class",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
#endif
|
|
{ &hf_a21_auth_chall_para_rand_num_type,
|
|
{"Random Number Type", "a21.auth_chall_para_rand_num_type",
|
|
FT_UINT8, BASE_DEC|BASE_RANGE_STRING, RVALS(a21_random_number_type_rvals), 0x0f,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_auth_chall_para_rand_value,
|
|
{"RAND Value", "a21.auth_chall_para_rand_value",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_service_option,
|
|
{"Service Option", "a21.service_option",
|
|
FT_UINT8, BASE_DEC, VALS(a21_service_option_vals), 0x7f,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_gcsna_status_reserved,
|
|
{"Reserved", "a21.gcsna_status_reserved",
|
|
FT_UINT8, BASE_DEC, NULL, 0xf8,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_gcsna_status_priority_incl,
|
|
{"Priority Incl", "a21.gcsna_status_priority_incl",
|
|
FT_UINT8, BASE_DEC, NULL, 0x04,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_gcsna_status_gec,
|
|
{"GEC", "a21.gcsna_status_gec",
|
|
FT_UINT8, BASE_DEC, NULL, 0x02,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_gcsna_status_status_incl,
|
|
{"Status Incl", "a21.gcsna_status_status_incl",
|
|
FT_UINT8, BASE_DEC, NULL, 0x01,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_gcsna_status,
|
|
{"Status", "a21.gcsna_status",
|
|
FT_UINT8, BASE_DEC, VALS(a21_gcsna_status_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_gcsna_status_call_priority,
|
|
{"Call Priority", "a21.gcsna_status_call_priority",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0f,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_a21_3G1X_parameters,
|
|
{"3G1X Parameters", "a21.3G1X_parameters",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
|
|
};
|
|
/* Setup protocol subtree array */
|
|
static gint *ett_a21_array[] = {
|
|
&ett_a21,
|
|
&ett_a21_corr_id,
|
|
&ett_a21_ie,
|
|
&ett_a21_record_content
|
|
};
|
|
|
|
expert_module_t *expert_a21;
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_a21_ie_data_not_dissected_yet,
|
|
{ "a21.ie_data_not_dissected_yet",
|
|
PI_PROTOCOL, PI_NOTE, "IE data not dissected yet", EXPFILL }},
|
|
};
|
|
|
|
proto_a21 = proto_register_protocol("A21 Protocol", "A21", "a21");
|
|
proto_register_field_array(proto_a21, hf_a21, array_length(hf_a21));
|
|
proto_register_subtree_array(ett_a21_array, array_length(ett_a21_array));
|
|
expert_a21 = expert_register_protocol(proto_a21);
|
|
expert_register_field_array(expert_a21, ei, array_length(ei));
|
|
}
|
|
|
|
void proto_reg_handoff_a21(void)
|
|
{
|
|
dissector_handle_t a21_handle;
|
|
|
|
a21_handle = create_dissector_handle(dissect_a21, proto_a21);
|
|
gcsna_handle = find_dissector_add_dependency("gcsna", proto_a21);
|
|
dissector_add_uint_with_preference("udp.port", A21_PORT, a21_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|