diff options
Diffstat (limited to 'openbsc/include/openbsc/osmo_gsup_messages.h')
| -rw-r--r-- | openbsc/include/openbsc/osmo_gsup_messages.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/openbsc/include/openbsc/osmo_gsup_messages.h b/openbsc/include/openbsc/osmo_gsup_messages.h new file mode 100644 index 000000000..bdc46aaee --- /dev/null +++ b/openbsc/include/openbsc/osmo_gsup_messages.h @@ -0,0 +1,120 @@ +/* Osmocom Subscriber Update Protocol message encoder/decoder */ + +/* (C) 2014 by Sysmocom s.f.m.c. GmbH + * (C) 2016 by Harald Welte <laforge@gnumonks.org> + * 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 <osmocom/core/msgb.h> +#include <osmocom/gsm/protocol/gsm_23_003.h> +#include <osmocom/gsm/protocol/gsm_04_08_gprs.h> +#include <osmocom/crypt/auth.h> + +#define OSMO_GSUP_MAX_NUM_PDP_INFO 10 /* GSM 09.02 limits this to 50 */ +#define OSMO_GSUP_MAX_NUM_AUTH_INFO 5 +#define OSMO_GSUP_MAX_MSISDN_LEN 9 + +#define OSMO_GSUP_PDP_TYPE_SIZE 2 + +enum osmo_gsup_iei { + OSMO_GSUP_IMSI_IE = 0x01, + OSMO_GSUP_CAUSE_IE = 0x02, + OSMO_GSUP_AUTH_TUPLE_IE = 0x03, + OSMO_GSUP_PDP_INFO_COMPL_IE = 0x04, + OSMO_GSUP_PDP_INFO_IE = 0x05, + OSMO_GSUP_CANCEL_TYPE_IE = 0x06, + OSMO_GSUP_FREEZE_PTMSI_IE = 0x07, + OSMO_GSUP_MSISDN_IE = 0x08, + OSMO_GSUP_HLR_NUMBER_IE = 0x09, + OSMO_GSUP_PDP_CONTEXT_ID_IE = 0x10, + OSMO_GSUP_PDP_TYPE_IE = 0x11, + OSMO_GSUP_ACCESS_POINT_NAME_IE = 0x12, + OSMO_GSUP_PDP_QOS_IE = 0x13, + OSMO_GSUP_RAND_IE = 0x20, + OSMO_GSUP_SRES_IE = 0x21, + OSMO_GSUP_KC_IE = 0x22, +}; + +enum osmo_gsup_message_type { + OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST = 0b00000100, + OSMO_GSUP_MSGT_UPDATE_LOCATION_ERROR = 0b00000101, + OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT = 0b00000110, + + OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST = 0b00001000, + OSMO_GSUP_MSGT_SEND_AUTH_INFO_ERROR = 0b00001001, + OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT = 0b00001010, + + OSMO_GSUP_MSGT_PURGE_MS_REQUEST = 0b00001100, + OSMO_GSUP_MSGT_PURGE_MS_ERROR = 0b00001101, + OSMO_GSUP_MSGT_PURGE_MS_RESULT = 0b00001110, + + OSMO_GSUP_MSGT_INSERT_DATA_REQUEST = 0b00010000, + OSMO_GSUP_MSGT_INSERT_DATA_ERROR = 0b00010001, + OSMO_GSUP_MSGT_INSERT_DATA_RESULT = 0b00010010, + + OSMO_GSUP_MSGT_DELETE_DATA_REQUEST = 0b00010100, + OSMO_GSUP_MSGT_DELETE_DATA_ERROR = 0b00010101, + OSMO_GSUP_MSGT_DELETE_DATA_RESULT = 0b00010110, + + OSMO_GSUP_MSGT_LOCATION_CANCEL_REQUEST = 0b00011100, + OSMO_GSUP_MSGT_LOCATION_CANCEL_ERROR = 0b00011101, + OSMO_GSUP_MSGT_LOCATION_CANCEL_RESULT = 0b00011110, +}; + +#define OSMO_GSUP_IS_MSGT_REQUEST(msgt) (((msgt) & 0b00000011) == 0b00) +#define OSMO_GSUP_IS_MSGT_ERROR(msgt) (((msgt) & 0b00000011) == 0b01) +#define OSMO_GSUP_TO_MSGT_ERROR(msgt) (((msgt) & 0b11111100) | 0b01) + +enum osmo_gsup_cancel_type { + OSMO_GSUP_CANCEL_TYPE_UPDATE = 1, /* on wire: 0 */ + OSMO_GSUP_CANCEL_TYPE_WITHDRAW = 2, /* on wire: 1 */ +}; + +struct osmo_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 osmo_gsup_message { + enum osmo_gsup_message_type message_type; + char imsi[GSM23003_IMSI_MAX_DIGITS+2]; + enum gsm48_gmm_cause cause; + enum osmo_gsup_cancel_type cancel_type; + int pdp_info_compl; + int freeze_ptmsi; + struct osmo_auth_vector auth_vectors[OSMO_GSUP_MAX_NUM_AUTH_INFO]; + size_t num_auth_vectors; + struct osmo_gsup_pdp_info pdp_infos[OSMO_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 osmo_gsup_decode(const uint8_t *data, size_t data_len, + struct osmo_gsup_message *gsup_msg); +void osmo_gsup_encode(struct msgb *msg, const struct osmo_gsup_message *gsup_msg); |