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authorHarald Welte <laforge@gnumonks.org>2016-04-25 19:07:34 +0200
committerHarald Welte <laforge@gnumonks.org>2016-04-29 13:10:37 +0200
commit23d77d56ea47bbb971bf2fc5d93d6ae2d7d30f03 (patch)
tree3b8eabec7b1cbc05ba86e1ba265c005f3bc87be4 /openbsc/src
parent50f1c0af567423b6ade9a84aaa5197ecf6237819 (diff)
Move osmo_gsup_messages.[ch] to libosmocore
This requires the corresponding commit in libosmocore.
Diffstat (limited to 'openbsc/src')
-rw-r--r--openbsc/src/gprs/Makefile.am2
-rw-r--r--openbsc/src/gprs/gprs_subscriber.c2
-rw-r--r--openbsc/src/gprs/osmo_gsup_messages.c472
3 files changed, 2 insertions, 474 deletions
diff --git a/openbsc/src/gprs/Makefile.am b/openbsc/src/gprs/Makefile.am
index 7889d5fd9..6dc7e1634 100644
--- a/openbsc/src/gprs/Makefile.am
+++ b/openbsc/src/gprs/Makefile.am
@@ -26,7 +26,7 @@ osmo_sgsn_SOURCES = gprs_gmm.c gprs_sgsn.c gprs_sndcp.c gprs_sndcp_vty.c \
sgsn_main.c sgsn_vty.c sgsn_libgtp.c \
gprs_llc.c gprs_llc_parse.c gprs_llc_vty.c crc24.c \
sgsn_ctrl.c sgsn_auth.c gprs_subscriber.c \
- osmo_gsup_messages.c gprs_utils.c gprs_gsup_client.c \
+ gprs_utils.c gprs_gsup_client.c \
sgsn_cdr.c sgsn_ares.c \
oap.c oap_messages.c
osmo_sgsn_LDADD = \
diff --git a/openbsc/src/gprs/gprs_subscriber.c b/openbsc/src/gprs/gprs_subscriber.c
index d9bc10a18..f5a5937a0 100644
--- a/openbsc/src/gprs/gprs_subscriber.c
+++ b/openbsc/src/gprs/gprs_subscriber.c
@@ -21,13 +21,13 @@
*/
#include <osmocom/gsm/protocol/gsm_04_08_gprs.h>
+#include <osmocom/gsm/gsup.h>
#include <openbsc/gsm_subscriber.h>
#include <openbsc/gprs_gsup_client.h>
#include <openbsc/sgsn.h>
#include <openbsc/gprs_sgsn.h>
#include <openbsc/gprs_gmm.h>
-#include <openbsc/osmo_gsup_messages.h>
#include <openbsc/gprs_utils.h>
#include <openbsc/debug.h>
diff --git a/openbsc/src/gprs/osmo_gsup_messages.c b/openbsc/src/gprs/osmo_gsup_messages.c
deleted file mode 100644
index 430cba750..000000000
--- a/openbsc/src/gprs/osmo_gsup_messages.c
+++ /dev/null
@@ -1,472 +0,0 @@
-/* Osmocom Subscriber Update Protocol message encoder/decoder */
-
-/*
- * (C) 2014 by Sysmocom s.f.m.c. GmbH
- * (C) 2015 by Holger Hans Peter Freyther
- * (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/>.
- *
- */
-
-#include <openbsc/osmo_gsup_messages.h>
-
-#include <openbsc/debug.h>
-#include <openbsc/utils.h>
-
-#include <osmocom/gsm/tlv.h>
-#include <osmocom/core/msgb.h>
-#include <osmocom/gsm/gsm48_ie.h>
-
-#include <stdint.h>
-
-static int decode_pdp_info(uint8_t *data, size_t data_len,
- struct osmo_gsup_pdp_info *pdp_info)
-{
- int rc;
- uint8_t tag;
- uint8_t *value;
- size_t value_len;
-
- /* specific parts */
- while (data_len > 0) {
- enum osmo_gsup_iei iei;
-
- rc = osmo_shift_tlv(&data, &data_len, &tag, &value, &value_len);
- if (rc < 0)
- return -GMM_CAUSE_PROTO_ERR_UNSPEC;
-
- iei = tag;
-
- switch (iei) {
- case OSMO_GSUP_PDP_CONTEXT_ID_IE:
- pdp_info->context_id = decode_big_endian(value, value_len);
- break;
-
- case OSMO_GSUP_PDP_TYPE_IE:
- pdp_info->pdp_type =
- decode_big_endian(value, value_len) & 0x0fff;
- break;
-
- case OSMO_GSUP_ACCESS_POINT_NAME_IE:
- pdp_info->apn_enc = value;
- pdp_info->apn_enc_len = value_len;
- break;
-
- case OSMO_GSUP_PDP_QOS_IE:
- pdp_info->qos_enc = value;
- pdp_info->qos_enc_len = value_len;
- break;
-
- default:
- LOGP(DGPRS, LOGL_ERROR,
- "GSUP IE type %d not expected in PDP info\n", iei);
- continue;
- }
- }
-
- return 0;
-}
-
-static int decode_auth_info(uint8_t *data, size_t data_len,
- struct osmo_auth_vector *auth_vector)
-{
- int rc;
- uint8_t tag;
- uint8_t *value;
- size_t value_len;
- enum osmo_gsup_iei iei;
- uint8_t presence = 0;
-
- /* specific parts */
- while (data_len > 0) {
- rc = osmo_shift_tlv(&data, &data_len, &tag, &value, &value_len);
- if (rc < 0)
- return -GMM_CAUSE_PROTO_ERR_UNSPEC;
-
- iei = tag;
-
- switch (iei) {
- case OSMO_GSUP_RAND_IE:
- if (value_len != sizeof(auth_vector->rand))
- goto parse_error;
-
- memcpy(auth_vector->rand, value, value_len);
- presence |= (1 << 0);
- break;
-
- case OSMO_GSUP_SRES_IE:
- if (value_len != sizeof(auth_vector->sres))
- goto parse_error;
-
- memcpy(auth_vector->sres, value, value_len);
- presence |= (1 << 1);
- break;
-
- case OSMO_GSUP_KC_IE:
- if (value_len != sizeof(auth_vector->kc))
- goto parse_error;
-
- memcpy(auth_vector->kc, value, value_len);
- presence |= (1 << 2);
- break;
-
- case OSMO_GSUP_IK_IE:
- if (value_len != sizeof(auth_vector->ik))
- goto parse_error;
- memcpy(auth_vector->ik, value, value_len);
- presence |= (1 << 4);
- break;
-
- case OSMO_GSUP_CK_IE:
- if (value_len != sizeof(auth_vector->ck))
- goto parse_error;
- memcpy(auth_vector->ck, value, value_len);
- presence |= (1 << 5);
- break;
-
- case OSMO_GSUP_AUTN_IE:
- if (value_len != sizeof(auth_vector->autn))
- goto parse_error;
- memcpy(auth_vector->autn, value, value_len);
- presence |= (1 << 6);
- break;
- case OSMO_GSUP_RES_IE:
- if (value_len > sizeof(auth_vector->res))
- goto parse_error;
- memcpy(auth_vector->res, value, value_len);
- auth_vector->res_len = value_len;
- presence |= (1 << 7);
- break;
-
- default:
- LOGP(DGPRS, LOGL_ERROR,
- "GSUP IE type %d not expected in PDP info\n", iei);
- continue;
- }
- }
-
- if (presence & 0x07)
- auth_vector->auth_types |= OSMO_AUTH_TYPE_GSM;
- if (presence & 0xf0)
- auth_vector->auth_types |= OSMO_AUTH_TYPE_UMTS;
-
- return 0;
-
-parse_error:
- LOGP(DGPRS, LOGL_ERROR,
- "GSUP IE type %d, length %zu invalid in PDP info\n", iei, value_len);
-
- return -1;
-}
-
-/*! Decode (parse) a GSUP message
- * \param[in] const_data input data to be parsed
- * \param[in] data_len length of input (\a const_data)
- * \param[out] gsup_msg callee-allocated output data structure
- * \returns 0 on success; negative otherwise
- */
-int osmo_gsup_decode(const uint8_t *const_data, size_t data_len,
- struct osmo_gsup_message *gsup_msg)
-{
- int rc;
- uint8_t tag;
- /* the shift/match functions expect non-const pointers, but we'll
- * either copy the data or cast pointers back to const before returning
- * them
- */
- uint8_t *data = (uint8_t *)const_data;
- uint8_t *value;
- size_t value_len;
- static const struct osmo_gsup_pdp_info empty_pdp_info = {0};
- static const struct osmo_auth_vector empty_auth_info = {0};
- static const struct osmo_gsup_message empty_gsup_message = {0};
-
- *gsup_msg = empty_gsup_message;
-
- /* generic part */
- rc = osmo_shift_v_fixed(&data, &data_len, 1, &value);
- if (rc < 0)
- return -GMM_CAUSE_INV_MAND_INFO;
-
- gsup_msg->message_type = decode_big_endian(value, 1);
-
- rc = osmo_match_shift_tlv(&data, &data_len, OSMO_GSUP_IMSI_IE,
- &value, &value_len);
-
- if (rc <= 0)
- return -GMM_CAUSE_INV_MAND_INFO;
-
- if (value_len * 2 + 1 > sizeof(gsup_msg->imsi))
- return -GMM_CAUSE_INV_MAND_INFO;
-
- /* Note that gsm48_decode_bcd_number expects the number of encoded IMSI
- * octets in the first octet. By coincidence (the TLV encoding) the byte
- * before the value part already contains this length so we can use it
- * here.
- */
- OSMO_ASSERT(value[-1] == value_len);
- gsm48_decode_bcd_number(gsup_msg->imsi, sizeof(gsup_msg->imsi),
- value - 1, 0);
-
- /* specific parts */
- while (data_len > 0) {
- enum osmo_gsup_iei iei;
- struct osmo_gsup_pdp_info pdp_info;
- struct osmo_auth_vector auth_info;
-
- rc = osmo_shift_tlv(&data, &data_len, &tag, &value, &value_len);
- if (rc < 0)
- return -GMM_CAUSE_PROTO_ERR_UNSPEC;
-
- iei = tag;
-
- switch (iei) {
- case OSMO_GSUP_IMSI_IE:
- case OSMO_GSUP_PDP_TYPE_IE:
- case OSMO_GSUP_ACCESS_POINT_NAME_IE:
- case OSMO_GSUP_RAND_IE:
- case OSMO_GSUP_SRES_IE:
- case OSMO_GSUP_KC_IE:
- LOGP(DGPRS, LOGL_NOTICE,
- "GSUP IE type %d not expected (ignored)\n", iei);
- continue;
-
- case OSMO_GSUP_CAUSE_IE:
- gsup_msg->cause = decode_big_endian(value, value_len);
- break;
-
- case OSMO_GSUP_CANCEL_TYPE_IE:
- gsup_msg->cancel_type =
- decode_big_endian(value, value_len) + 1;
- break;
-
- case OSMO_GSUP_PDP_INFO_COMPL_IE:
- gsup_msg->pdp_info_compl = 1;
- break;
-
- case OSMO_GSUP_FREEZE_PTMSI_IE:
- gsup_msg->freeze_ptmsi = 1;
- break;
-
- case OSMO_GSUP_PDP_CONTEXT_ID_IE:
- /* When these IE appear in the top-level part of the
- * message, they are used by Delete Subscr Info to delete
- * single entries. We don't have an extra list for
- * these but use the PDP info list instead */
-
- /* fall through */
-
- case OSMO_GSUP_PDP_INFO_IE:
- if (gsup_msg->num_pdp_infos >= OSMO_GSUP_MAX_NUM_PDP_INFO) {
- LOGP(DGPRS, LOGL_ERROR,
- "GSUP IE type %d (PDP_INFO) max exceeded\n",
- iei);
- return -GMM_CAUSE_COND_IE_ERR;
- }
-
- pdp_info = empty_pdp_info;
-
- if (iei == OSMO_GSUP_PDP_INFO_IE) {
- rc = decode_pdp_info(value, value_len, &pdp_info);
- if (rc < 0)
- return rc;
- pdp_info.have_info = 1;
- } else {
- pdp_info.context_id =
- decode_big_endian(value, value_len);
- }
-
- gsup_msg->pdp_infos[gsup_msg->num_pdp_infos++] =
- pdp_info;
- break;
-
- case OSMO_GSUP_AUTH_TUPLE_IE:
- if (gsup_msg->num_auth_vectors >= OSMO_GSUP_MAX_NUM_AUTH_INFO) {
- LOGP(DGPRS, LOGL_ERROR,
- "GSUP IE type %d (AUTH_INFO) max exceeded\n",
- iei);
- return -GMM_CAUSE_INV_MAND_INFO;
- }
-
- auth_info = empty_auth_info;
-
- rc = decode_auth_info(value, value_len, &auth_info);
- if (rc < 0)
- return rc;
-
- gsup_msg->auth_vectors[gsup_msg->num_auth_vectors++] =
- auth_info;
- break;
-
- case OSMO_GSUP_AUTS_IE:
- if (value_len != 16) {
- LOGP(DGPRS, LOGL_ERROR,
- "AUTS length != 16 received\n");
- return -GMM_CAUSE_COND_IE_ERR;
- }
- gsup_msg->auts = value;
- break;
-
- case OSMO_GSUP_MSISDN_IE:
- gsup_msg->msisdn_enc = value;
- gsup_msg->msisdn_enc_len = value_len;
- break;
-
- case OSMO_GSUP_HLR_NUMBER_IE:
- gsup_msg->hlr_enc = value;
- gsup_msg->hlr_enc_len = value_len;
- break;
-
- default:
- LOGP(DGPRS, LOGL_NOTICE,
- "GSUP IE type %d unknown\n", iei);
- continue;
- }
- }
-
- return 0;
-}
-
-static void encode_pdp_info(struct msgb *msg, enum osmo_gsup_iei iei,
- const struct osmo_gsup_pdp_info *pdp_info)
-{
- uint8_t *len_field;
- size_t old_len;
- uint8_t u8;
-
- len_field = msgb_tlv_put(msg, iei, 0, NULL) - 1;
- old_len = msgb_length(msg);
-
- u8 = pdp_info->context_id;
- msgb_tlv_put(msg, OSMO_GSUP_PDP_CONTEXT_ID_IE, sizeof(u8), &u8);
-
- if (pdp_info->pdp_type) {
- msgb_tlv_put(msg, OSMO_GSUP_PDP_TYPE_IE,
- OSMO_GSUP_PDP_TYPE_SIZE,
- encode_big_endian(pdp_info->pdp_type | 0xf000,
- OSMO_GSUP_PDP_TYPE_SIZE));
- }
-
- if (pdp_info->apn_enc) {
- msgb_tlv_put(msg, OSMO_GSUP_ACCESS_POINT_NAME_IE,
- pdp_info->apn_enc_len, pdp_info->apn_enc);
- }
-
- if (pdp_info->qos_enc) {
- msgb_tlv_put(msg, OSMO_GSUP_PDP_QOS_IE,
- pdp_info->qos_enc_len, pdp_info->qos_enc);
- }
-
- /* Update length field */
- *len_field = msgb_length(msg) - old_len;
-}
-
-static void encode_auth_info(struct msgb *msg, enum osmo_gsup_iei iei,
- const struct osmo_auth_vector *auth_vector)
-{
- uint8_t *len_field;
- size_t old_len;
-
- len_field = msgb_tlv_put(msg, iei, 0, NULL) - 1;
- old_len = msgb_length(msg);
-
- msgb_tlv_put(msg, OSMO_GSUP_RAND_IE,
- sizeof(auth_vector->rand), auth_vector->rand);
-
- msgb_tlv_put(msg, OSMO_GSUP_SRES_IE,
- sizeof(auth_vector->sres), auth_vector->sres);
-
- msgb_tlv_put(msg, OSMO_GSUP_KC_IE,
- sizeof(auth_vector->kc), auth_vector->kc);
-
- /* Update length field */
- *len_field = msgb_length(msg) - old_len;
-}
-
-/*! Encode a GSUP message
- * \param[out] msg message buffer to which encoded message is written
- * \param[in] gsup_msg \ref osmo_gsup_message data to be encoded
- */
-void osmo_gsup_encode(struct msgb *msg, const struct osmo_gsup_message *gsup_msg)
-{
- uint8_t u8;
- int idx;
- uint8_t bcd_buf[GSM48_MI_SIZE] = {0};
- size_t bcd_len;
-
- /* generic part */
- OSMO_ASSERT(gsup_msg->message_type);
- msgb_v_put(msg, gsup_msg->message_type);
-
- bcd_len = gsm48_encode_bcd_number(bcd_buf, sizeof(bcd_buf), 0,
- gsup_msg->imsi);
-
- OSMO_ASSERT(bcd_len > 1);
-
- /* Note that gsm48_encode_bcd_number puts the length into the first
- * octet. Since msgb_tlv_put will add this length byte, we'll have to
- * skip it */
- msgb_tlv_put(msg, OSMO_GSUP_IMSI_IE, bcd_len - 1, &bcd_buf[1]);
-
- /* specific parts */
- if (gsup_msg->msisdn_enc)
- msgb_tlv_put(msg, OSMO_GSUP_MSISDN_IE,
- gsup_msg->msisdn_enc_len, gsup_msg->msisdn_enc);
- if (gsup_msg->hlr_enc)
- msgb_tlv_put(msg, OSMO_GSUP_HLR_NUMBER_IE,
- gsup_msg->hlr_enc_len, gsup_msg->hlr_enc);
-
- if ((u8 = gsup_msg->cause))
- msgb_tlv_put(msg, OSMO_GSUP_CAUSE_IE, sizeof(u8), &u8);
-
- if ((u8 = gsup_msg->cancel_type)) {
- u8 -= 1;
- msgb_tlv_put(msg, OSMO_GSUP_CANCEL_TYPE_IE, sizeof(u8), &u8);
- }
-
- if (gsup_msg->pdp_info_compl)
- msgb_tlv_put(msg, OSMO_GSUP_PDP_INFO_COMPL_IE, 0, &u8);
-
- if (gsup_msg->freeze_ptmsi)
- msgb_tlv_put(msg, OSMO_GSUP_FREEZE_PTMSI_IE, 0, &u8);
-
- for (idx = 0; idx < gsup_msg->num_pdp_infos; idx++) {
- const struct osmo_gsup_pdp_info *pdp_info;
-
- pdp_info = &gsup_msg->pdp_infos[idx];
-
- if (pdp_info->context_id == 0)
- continue;
-
- if (pdp_info->have_info) {
- encode_pdp_info(msg, OSMO_GSUP_PDP_INFO_IE, pdp_info);
- } else {
- u8 = pdp_info->context_id;
- msgb_tlv_put(msg, OSMO_GSUP_PDP_CONTEXT_ID_IE,
- sizeof(u8), &u8);
- }
- }
-
- for (idx = 0; idx < gsup_msg->num_auth_vectors; idx++) {
- const struct osmo_auth_vector *auth_vector;
-
- auth_vector = &gsup_msg->auth_vectors[idx];
-
- encode_auth_info(msg, OSMO_GSUP_AUTH_TUPLE_IE, auth_vector);
- }
-}