| /* GPRS Subscriber Update Protocol message encoder/decoder */ |
| |
| /* (C) 2014 by Sysmocom s.f.m.c. GmbH |
| * All Rights Reserved |
| * |
| * Author: Jacob Erlbeck |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU Affero General Public License as published by |
| * the Free Software Foundation; either version 3 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 Affero General Public License for more details. |
| * |
| * You should have received a copy of the GNU Affero General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| */ |
| #pragma once |
| |
| #include <stdint.h> |
| #include <openbsc/gsm_04_08_gprs.h> |
| #include <openbsc/gsm_data.h> |
| /* Needed for GSM_IMSI_LENGTH: */ |
| #include <openbsc/gsm_subscriber.h> |
| |
| #define GPRS_GSUP_MAX_NUM_PDP_INFO 10 /* GSM 09.02 limits this to 50 */ |
| #define GPRS_GSUP_MAX_NUM_AUTH_INFO 5 |
| #define GPRS_GSUP_MAX_MSISDN_LEN 9 |
| |
| #define GPRS_GSUP_PDP_TYPE_SIZE 2 |
| |
| enum gprs_gsup_iei { |
| GPRS_GSUP_IMSI_IE = 0x01, |
| GPRS_GSUP_CAUSE_IE = 0x02, |
| GPRS_GSUP_AUTH_TUPLE_IE = 0x03, |
| GPRS_GSUP_PDP_INFO_COMPL_IE = 0x04, |
| GPRS_GSUP_PDP_INFO_IE = 0x05, |
| GPRS_GSUP_CANCEL_TYPE_IE = 0x06, |
| GPRS_GSUP_FREEZE_PTMSI_IE = 0x07, |
| GPRS_GSUP_MSISDN_IE = 0x08, |
| GPRS_GSUP_HLR_NUMBER_IE = 0x09, |
| GPRS_GSUP_PDP_CONTEXT_ID_IE = 0x10, |
| GPRS_GSUP_PDP_TYPE_IE = 0x11, |
| GPRS_GSUP_ACCESS_POINT_NAME_IE = 0x12, |
| GPRS_GSUP_PDP_QOS_IE = 0x13, |
| GPRS_GSUP_RAND_IE = 0x20, |
| GPRS_GSUP_SRES_IE = 0x21, |
| GPRS_GSUP_KC_IE = 0x22 |
| }; |
| |
| enum gprs_gsup_message_type { |
| GPRS_GSUP_MSGT_UPDATE_LOCATION_REQUEST = 0b00000100, |
| GPRS_GSUP_MSGT_UPDATE_LOCATION_ERROR = 0b00000101, |
| GPRS_GSUP_MSGT_UPDATE_LOCATION_RESULT = 0b00000110, |
| |
| GPRS_GSUP_MSGT_SEND_AUTH_INFO_REQUEST = 0b00001000, |
| GPRS_GSUP_MSGT_SEND_AUTH_INFO_ERROR = 0b00001001, |
| GPRS_GSUP_MSGT_SEND_AUTH_INFO_RESULT = 0b00001010, |
| |
| GPRS_GSUP_MSGT_PURGE_MS_REQUEST = 0b00001100, |
| GPRS_GSUP_MSGT_PURGE_MS_ERROR = 0b00001101, |
| GPRS_GSUP_MSGT_PURGE_MS_RESULT = 0b00001110, |
| |
| GPRS_GSUP_MSGT_INSERT_DATA_REQUEST = 0b00010000, |
| GPRS_GSUP_MSGT_INSERT_DATA_ERROR = 0b00010001, |
| GPRS_GSUP_MSGT_INSERT_DATA_RESULT = 0b00010010, |
| |
| GPRS_GSUP_MSGT_DELETE_DATA_REQUEST = 0b00010100, |
| GPRS_GSUP_MSGT_DELETE_DATA_ERROR = 0b00010101, |
| GPRS_GSUP_MSGT_DELETE_DATA_RESULT = 0b00010110, |
| |
| GPRS_GSUP_MSGT_LOCATION_CANCEL_REQUEST = 0b00011100, |
| GPRS_GSUP_MSGT_LOCATION_CANCEL_ERROR = 0b00011101, |
| GPRS_GSUP_MSGT_LOCATION_CANCEL_RESULT = 0b00011110, |
| }; |
| |
| #define GPRS_GSUP_IS_MSGT_REQUEST(msgt) (((msgt) & 0b00000011) == 0b00) |
| #define GPRS_GSUP_IS_MSGT_ERROR(msgt) (((msgt) & 0b00000011) == 0b01) |
| #define GPRS_GSUP_TO_MSGT_ERROR(msgt) (((msgt) & 0b11111100) | 0b01) |
| |
| enum gprs_gsup_cancel_type { |
| GPRS_GSUP_CANCEL_TYPE_UPDATE = 1, /* on wire: 0 */ |
| GPRS_GSUP_CANCEL_TYPE_WITHDRAW = 2, /* on wire: 1 */ |
| }; |
| |
| struct gprs_gsup_pdp_info { |
| unsigned int context_id; |
| int have_info; |
| uint16_t pdp_type; |
| const uint8_t *apn_enc; |
| size_t apn_enc_len; |
| const uint8_t *qos_enc; |
| size_t qos_enc_len; |
| }; |
| |
| struct gprs_gsup_message { |
| enum gprs_gsup_message_type message_type; |
| char imsi[GSM_IMSI_LENGTH]; |
| enum gsm48_gmm_cause cause; |
| enum gprs_gsup_cancel_type cancel_type; |
| int pdp_info_compl; |
| int freeze_ptmsi; |
| struct gsm_auth_tuple auth_tuples[GPRS_GSUP_MAX_NUM_AUTH_INFO]; |
| size_t num_auth_tuples; |
| struct gprs_gsup_pdp_info pdp_infos[GPRS_GSUP_MAX_NUM_PDP_INFO]; |
| size_t num_pdp_infos; |
| const uint8_t *msisdn_enc; |
| size_t msisdn_enc_len; |
| const uint8_t *hlr_enc; |
| size_t hlr_enc_len; |
| }; |
| |
| int gprs_gsup_decode(const uint8_t *data, size_t data_len, |
| struct gprs_gsup_message *gsup_msg); |
| void gprs_gsup_encode(struct msgb *msg, const struct gprs_gsup_message *gsup_msg); |