Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 1 | /* MS subscriber data handling */ |
| 2 | |
| 3 | /* (C) 2014 by sysmocom s.f.m.c. GmbH |
| 4 | * |
| 5 | * All Rights Reserved |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Affero General Public License as published by |
| 9 | * the Free Software Foundation; either version 3 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU Affero General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Affero General Public License |
| 18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #include <openbsc/gsm_subscriber.h> |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 23 | #include <openbsc/gprs_gsup_client.h> |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 24 | |
| 25 | #include <openbsc/sgsn.h> |
| 26 | #include <openbsc/gprs_sgsn.h> |
| 27 | #include <openbsc/gprs_gmm.h> |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 28 | #include <openbsc/gprs_gsup_messages.h> |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 29 | |
| 30 | #include <openbsc/debug.h> |
| 31 | |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 32 | #include <netinet/in.h> |
| 33 | #include <arpa/inet.h> |
| 34 | |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 35 | extern void *tall_bsc_ctx; |
| 36 | |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 37 | static int gsup_read_cb(struct gprs_gsup_client *gsupc, struct msgb *msg); |
| 38 | |
| 39 | /* TODO: Some functions are specific to the SGSN, but this file is more general |
| 40 | * (it has gprs_* name). Either move these functions elsewhere, split them and |
| 41 | * move a part, or replace the gprs_ prefix by sgsn_. The applies to |
| 42 | * gprs_subscr_init, gsup_read_cb, and gprs_subscr_tx_gsup_message. |
| 43 | */ |
| 44 | |
| 45 | int gprs_subscr_init(struct sgsn_instance *sgi) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 46 | { |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 47 | const char *addr_str; |
| 48 | |
| 49 | if (!sgi->cfg.gsup_server_addr.sin_addr.s_addr) |
| 50 | return 0; |
| 51 | |
| 52 | addr_str = inet_ntoa(sgi->cfg.gsup_server_addr.sin_addr); |
| 53 | |
| 54 | sgi->gsup_client = gprs_gsup_client_create( |
| 55 | addr_str, sgi->cfg.gsup_server_port, |
| 56 | &gsup_read_cb); |
| 57 | |
| 58 | if (!sgi->gsup_client) |
| 59 | return -1; |
| 60 | |
| 61 | return 1; |
| 62 | } |
| 63 | |
| 64 | static int gsup_read_cb(struct gprs_gsup_client *gsupc, struct msgb *msg) |
| 65 | { |
| 66 | int rc; |
| 67 | |
| 68 | rc = gprs_subscr_rx_gsup_message(msg); |
Jacob Erlbeck | e154d8b | 2014-12-19 19:15:55 +0100 | [diff] [blame] | 69 | msgb_free(msg); |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 70 | if (rc < 0) |
| 71 | return -1; |
| 72 | |
| 73 | return rc; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 74 | } |
| 75 | |
Jacob Erlbeck | 0f47b8f | 2015-01-06 16:32:41 +0100 | [diff] [blame^] | 76 | static void sgsn_subscriber_timeout_cb(void *subscr_); |
| 77 | int gprs_subscr_purge(struct gsm_subscriber *subscr); |
| 78 | |
| 79 | void gprs_subscr_stop_timer(struct gsm_subscriber *subscr) |
| 80 | { |
| 81 | if (subscr->sgsn_data->timer.data) { |
| 82 | osmo_timer_del(&subscr->sgsn_data->timer); |
| 83 | subscr->sgsn_data->timer.cb = NULL; |
| 84 | OSMO_ASSERT(subscr->sgsn_data->timer.data == subscr); |
| 85 | subscr->sgsn_data->timer.data = NULL; |
| 86 | subscr_put(subscr); |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | void gprs_subscr_start_timer(struct gsm_subscriber *subscr, unsigned seconds) |
| 91 | { |
| 92 | if (!subscr->sgsn_data->timer.data) { |
| 93 | subscr->sgsn_data->timer.cb = sgsn_subscriber_timeout_cb; |
| 94 | subscr->sgsn_data->timer.data = subscr_get(subscr); |
| 95 | } |
| 96 | |
| 97 | osmo_timer_schedule(&subscr->sgsn_data->timer, seconds, 0); |
| 98 | } |
| 99 | |
| 100 | static void sgsn_subscriber_timeout_cb(void *subscr_) |
| 101 | { |
| 102 | struct gsm_subscriber *subscr = subscr_; |
| 103 | |
| 104 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 105 | "Expired, deleting subscriber entry\n"); |
| 106 | |
| 107 | /* Make sure, the timer is cleaned up */ |
| 108 | subscr->keep_in_ram = 0; |
| 109 | gprs_subscr_stop_timer(subscr); |
| 110 | /* The subscr is freed now, if the timer was the last user */ |
| 111 | } |
| 112 | |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 113 | static struct sgsn_subscriber_data *sgsn_subscriber_data_alloc(void *ctx) |
| 114 | { |
| 115 | struct sgsn_subscriber_data *sdata; |
Jacob Erlbeck | 7921ab1 | 2014-12-08 15:52:00 +0100 | [diff] [blame] | 116 | int idx; |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 117 | |
| 118 | sdata = talloc_zero(ctx, struct sgsn_subscriber_data); |
| 119 | |
Jacob Erlbeck | 7921ab1 | 2014-12-08 15:52:00 +0100 | [diff] [blame] | 120 | for (idx = 0; idx < ARRAY_SIZE(sdata->auth_triplets); idx++) |
| 121 | sdata->auth_triplets[idx].key_seq = GSM_KEY_SEQ_INVAL; |
| 122 | |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 123 | return sdata; |
| 124 | } |
| 125 | |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 126 | struct gsm_subscriber *gprs_subscr_get_or_create(const char *imsi) |
| 127 | { |
| 128 | struct gsm_subscriber *subscr; |
| 129 | |
| 130 | subscr = subscr_get_or_create(NULL, imsi); |
| 131 | if (!subscr) |
| 132 | return NULL; |
| 133 | |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 134 | if (!subscr->sgsn_data) |
| 135 | subscr->sgsn_data = sgsn_subscriber_data_alloc(subscr); |
| 136 | |
Jacob Erlbeck | 0f47b8f | 2015-01-06 16:32:41 +0100 | [diff] [blame^] | 137 | gprs_subscr_stop_timer(subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 138 | |
| 139 | return subscr; |
| 140 | } |
| 141 | |
| 142 | struct gsm_subscriber *gprs_subscr_get_by_imsi(const char *imsi) |
| 143 | { |
| 144 | return subscr_active_by_imsi(NULL, imsi); |
| 145 | } |
| 146 | |
| 147 | void gprs_subscr_delete(struct gsm_subscriber *subscr) |
| 148 | { |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 149 | if (subscr->sgsn_data->mm) { |
| 150 | subscr_put(subscr->sgsn_data->mm->subscr); |
| 151 | subscr->sgsn_data->mm->subscr = NULL; |
| 152 | subscr->sgsn_data->mm = NULL; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | if ((subscr->flags & GPRS_SUBSCRIBER_CANCELLED) || |
Jacob Erlbeck | 0f47b8f | 2015-01-06 16:32:41 +0100 | [diff] [blame^] | 156 | (subscr->flags & GSM_SUBSCRIBER_FIRST_CONTACT)) { |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 157 | subscr->keep_in_ram = 0; |
Jacob Erlbeck | 0f47b8f | 2015-01-06 16:32:41 +0100 | [diff] [blame^] | 158 | gprs_subscr_stop_timer(subscr); |
| 159 | } else if (sgsn->cfg.subscriber_expiry_timeout != SGSN_TIMEOUT_NEVER) { |
| 160 | gprs_subscr_start_timer(subscr, sgsn->cfg.subscriber_expiry_timeout); |
| 161 | } else { |
| 162 | subscr->keep_in_ram = 1; |
| 163 | } |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 164 | |
| 165 | subscr_put(subscr); |
| 166 | } |
| 167 | |
| 168 | void gprs_subscr_put_and_cancel(struct gsm_subscriber *subscr) |
| 169 | { |
| 170 | subscr->authorized = 0; |
| 171 | subscr->flags |= GPRS_SUBSCRIBER_CANCELLED; |
| 172 | |
| 173 | gprs_subscr_update(subscr); |
| 174 | |
| 175 | gprs_subscr_delete(subscr); |
| 176 | } |
| 177 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 178 | static int gprs_subscr_tx_gsup_message(struct gsm_subscriber *subscr, |
| 179 | struct gprs_gsup_message *gsup_msg) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 180 | { |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 181 | struct msgb *msg = gprs_gsup_msgb_alloc(); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 182 | |
| 183 | strncpy(gsup_msg->imsi, subscr->imsi, sizeof(gsup_msg->imsi) - 1); |
| 184 | |
| 185 | gprs_gsup_encode(msg, gsup_msg); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 186 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 187 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 188 | "Sending GSUP, will send: %s\n", msgb_hexdump(msg)); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 189 | |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 190 | if (!sgsn->gsup_client) { |
| 191 | msgb_free(msg); |
| 192 | return -ENOTSUP; |
| 193 | } |
| 194 | |
| 195 | return gprs_gsup_client_send(sgsn->gsup_client, msg); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 196 | } |
| 197 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 198 | static int gprs_subscr_handle_gsup_auth_res(struct gsm_subscriber *subscr, |
| 199 | struct gprs_gsup_message *gsup_msg) |
| 200 | { |
| 201 | unsigned idx; |
| 202 | struct sgsn_subscriber_data *sdata = subscr->sgsn_data; |
| 203 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 204 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 205 | "Got SendAuthenticationInfoResult, num_auth_tuples = %d\n", |
| 206 | gsup_msg->num_auth_tuples); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 207 | |
| 208 | if (gsup_msg->num_auth_tuples > 0) { |
| 209 | memset(sdata->auth_triplets, 0, sizeof(sdata->auth_triplets)); |
| 210 | |
| 211 | for (idx = 0; idx < ARRAY_SIZE(sdata->auth_triplets); idx++) |
| 212 | sdata->auth_triplets[idx].key_seq = GSM_KEY_SEQ_INVAL; |
| 213 | } |
| 214 | |
| 215 | for (idx = 0; idx < gsup_msg->num_auth_tuples; idx++) { |
| 216 | size_t key_seq = gsup_msg->auth_tuples[idx].key_seq; |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 217 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 218 | "Adding auth tuple, cksn = %d\n", key_seq); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 219 | if (key_seq >= ARRAY_SIZE(sdata->auth_triplets)) { |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 220 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 221 | "Skipping auth triplet with invalid cksn %d\n", |
| 222 | key_seq); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 223 | continue; |
| 224 | } |
| 225 | sdata->auth_triplets[key_seq] = gsup_msg->auth_tuples[idx]; |
| 226 | } |
| 227 | |
| 228 | sdata->auth_triplets_updated = 1; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 229 | sdata->error_cause = 0; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 230 | |
| 231 | gprs_subscr_update_auth_info(subscr); |
| 232 | |
| 233 | return 0; |
| 234 | } |
| 235 | |
| 236 | static int gprs_subscr_handle_gsup_upd_loc_res(struct gsm_subscriber *subscr, |
| 237 | struct gprs_gsup_message *gsup_msg) |
| 238 | { |
| 239 | unsigned idx; |
| 240 | |
| 241 | if (gsup_msg->pdp_info_compl) { |
| 242 | LOGP(DGPRS, LOGL_INFO, "Would clear existing PDP info\n"); |
| 243 | |
| 244 | /* TODO: clear existing PDP info entries */ |
| 245 | } |
| 246 | |
| 247 | for (idx = 0; idx < gsup_msg->num_pdp_infos; idx++) { |
| 248 | struct gprs_gsup_pdp_info *pdp_info = &gsup_msg->pdp_infos[idx]; |
| 249 | size_t ctx_id = pdp_info->context_id; |
| 250 | |
| 251 | LOGP(DGPRS, LOGL_INFO, |
| 252 | "Would set PDP info, context id = %d, APN = %s\n", |
| 253 | ctx_id, osmo_hexdump(pdp_info->apn_enc, pdp_info->apn_enc_len)); |
| 254 | |
| 255 | /* TODO: set PDP info [ctx_id] */ |
| 256 | } |
| 257 | |
| 258 | subscr->authorized = 1; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 259 | subscr->sgsn_data->error_cause = 0; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 260 | |
| 261 | gprs_subscr_update(subscr); |
| 262 | return 0; |
| 263 | } |
| 264 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 265 | static int check_cause(int cause) |
| 266 | { |
| 267 | switch (cause) { |
| 268 | case GMM_CAUSE_IMSI_UNKNOWN ... GMM_CAUSE_ILLEGAL_ME: |
| 269 | case GMM_CAUSE_GPRS_NOTALLOWED ... GMM_CAUSE_NO_GPRS_PLMN: |
| 270 | return EACCES; |
| 271 | |
| 272 | case GMM_CAUSE_MSC_TEMP_NOTREACH ... GMM_CAUSE_CONGESTION: |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 273 | return EHOSTUNREACH; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 274 | |
| 275 | case GMM_CAUSE_SEM_INCORR_MSG ... GMM_CAUSE_PROTO_ERR_UNSPEC: |
| 276 | default: |
| 277 | return EINVAL; |
| 278 | } |
| 279 | } |
| 280 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 281 | static int gprs_subscr_handle_gsup_auth_err(struct gsm_subscriber *subscr, |
| 282 | struct gprs_gsup_message *gsup_msg) |
| 283 | { |
| 284 | unsigned idx; |
| 285 | struct sgsn_subscriber_data *sdata = subscr->sgsn_data; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 286 | int cause_err; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 287 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 288 | cause_err = check_cause(gsup_msg->cause); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 289 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 290 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 291 | "Send authentication info has failed with cause %d, " |
| 292 | "handled as: %s\n", |
| 293 | gsup_msg->cause, strerror(cause_err)); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 294 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 295 | switch (cause_err) { |
| 296 | case EACCES: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 297 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 298 | "GPRS send auth info req failed, access denied, " |
| 299 | "GMM cause = '%s' (%d)\n", |
| 300 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 301 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 302 | /* Clear auth tuples */ |
| 303 | memset(sdata->auth_triplets, 0, sizeof(sdata->auth_triplets)); |
| 304 | for (idx = 0; idx < ARRAY_SIZE(sdata->auth_triplets); idx++) |
| 305 | sdata->auth_triplets[idx].key_seq = GSM_KEY_SEQ_INVAL; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 306 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 307 | subscr->authorized = 0; |
| 308 | sdata->error_cause = gsup_msg->cause; |
| 309 | gprs_subscr_update_auth_info(subscr); |
| 310 | break; |
| 311 | |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 312 | case EHOSTUNREACH: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 313 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 314 | "GPRS send auth info req failed, GMM cause = '%s' (%d)\n", |
| 315 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 316 | gsup_msg->cause); |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 317 | |
| 318 | sdata->error_cause = gsup_msg->cause; |
| 319 | gprs_subscr_update_auth_info(subscr); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 320 | break; |
| 321 | |
| 322 | default: |
| 323 | case EINVAL: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 324 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 325 | "GSUP protocol remote error, GMM cause = '%s' (%d)\n", |
| 326 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 327 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 328 | break; |
| 329 | } |
| 330 | |
| 331 | return -gsup_msg->cause; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | static int gprs_subscr_handle_gsup_upd_loc_err(struct gsm_subscriber *subscr, |
| 335 | struct gprs_gsup_message *gsup_msg) |
| 336 | { |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 337 | int cause_err; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 338 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 339 | cause_err = check_cause(gsup_msg->cause); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 340 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 341 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 342 | "Update location has failed with cause %d, handled as: %s\n", |
| 343 | gsup_msg->cause, strerror(cause_err)); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 344 | |
| 345 | switch (cause_err) { |
| 346 | case EACCES: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 347 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 348 | "GPRS update location failed, access denied, " |
| 349 | "GMM cause = '%s' (%d)\n", |
| 350 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 351 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 352 | |
| 353 | subscr->authorized = 0; |
| 354 | subscr->sgsn_data->error_cause = gsup_msg->cause; |
| 355 | gprs_subscr_update_auth_info(subscr); |
| 356 | break; |
| 357 | |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 358 | case EHOSTUNREACH: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 359 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 360 | "GPRS update location failed, GMM cause = '%s' (%d)\n", |
| 361 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 362 | gsup_msg->cause); |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 363 | |
| 364 | subscr->sgsn_data->error_cause = gsup_msg->cause; |
| 365 | gprs_subscr_update_auth_info(subscr); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 366 | break; |
| 367 | |
| 368 | default: |
| 369 | case EINVAL: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 370 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 371 | "GSUP protocol remote error, GMM cause = '%s' (%d)\n", |
| 372 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 373 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 374 | break; |
| 375 | } |
| 376 | |
| 377 | return -gsup_msg->cause; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 378 | } |
| 379 | |
| 380 | int gprs_subscr_rx_gsup_message(struct msgb *msg) |
| 381 | { |
| 382 | uint8_t *data = msgb_l2(msg); |
| 383 | size_t data_len = msgb_l2len(msg); |
| 384 | int rc = 0; |
| 385 | |
| 386 | struct gprs_gsup_message gsup_msg = {0}; |
| 387 | struct gsm_subscriber *subscr; |
| 388 | |
| 389 | rc = gprs_gsup_decode(data, data_len, &gsup_msg); |
| 390 | if (rc < 0) { |
| 391 | LOGP(DGPRS, LOGL_ERROR, |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 392 | "decoding GSUP message fails with error '%s' (%d)\n", |
| 393 | get_value_string(gsm48_gmm_cause_names, -rc), -rc); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 394 | return rc; |
| 395 | } |
| 396 | |
| 397 | if (!gsup_msg.imsi[0]) |
| 398 | return -GMM_CAUSE_INV_MAND_INFO; |
| 399 | |
| 400 | if (gsup_msg.message_type == GPRS_GSUP_MSGT_INSERT_DATA_REQUEST) |
| 401 | subscr = gprs_subscr_get_or_create(gsup_msg.imsi); |
| 402 | else |
| 403 | subscr = gprs_subscr_get_by_imsi(gsup_msg.imsi); |
| 404 | |
| 405 | if (!subscr) { |
| 406 | LOGP(DGPRS, LOGL_NOTICE, |
| 407 | "Unknown IMSI %s, discarding GSUP message\n", gsup_msg.imsi); |
| 408 | return -GMM_CAUSE_IMSI_UNKNOWN; |
| 409 | } |
| 410 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 411 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 412 | "Received GSUP message of type 0x%02x\n", gsup_msg.message_type); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 413 | |
| 414 | switch (gsup_msg.message_type) { |
| 415 | case GPRS_GSUP_MSGT_LOCATION_CANCEL_REQUEST: |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 416 | subscr->sgsn_data->error_cause = 0; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 417 | gprs_subscr_put_and_cancel(subscr); |
| 418 | subscr = NULL; |
| 419 | break; |
| 420 | |
| 421 | case GPRS_GSUP_MSGT_SEND_AUTH_INFO_RESULT: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 422 | rc = gprs_subscr_handle_gsup_auth_res(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 423 | break; |
| 424 | |
| 425 | case GPRS_GSUP_MSGT_SEND_AUTH_INFO_ERROR: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 426 | rc = gprs_subscr_handle_gsup_auth_err(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 427 | break; |
| 428 | |
| 429 | case GPRS_GSUP_MSGT_UPDATE_LOCATION_RESULT: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 430 | rc = gprs_subscr_handle_gsup_upd_loc_res(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 431 | break; |
| 432 | |
| 433 | case GPRS_GSUP_MSGT_UPDATE_LOCATION_ERROR: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 434 | rc = gprs_subscr_handle_gsup_upd_loc_err(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 435 | break; |
| 436 | |
| 437 | case GPRS_GSUP_MSGT_PURGE_MS_ERROR: |
| 438 | case GPRS_GSUP_MSGT_PURGE_MS_RESULT: |
| 439 | case GPRS_GSUP_MSGT_INSERT_DATA_REQUEST: |
| 440 | case GPRS_GSUP_MSGT_DELETE_DATA_REQUEST: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 441 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 442 | "Rx GSUP message type %d not yet implemented\n", |
| 443 | gsup_msg.message_type); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 444 | rc = -GMM_CAUSE_MSGT_NOTEXIST_NOTIMPL; |
| 445 | break; |
| 446 | |
| 447 | default: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 448 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 449 | "Rx GSUP message type %d not valid at SGSN\n", |
| 450 | gsup_msg.message_type); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 451 | rc = -GMM_CAUSE_MSGT_INCOMP_P_STATE; |
| 452 | break; |
| 453 | }; |
| 454 | |
| 455 | if (subscr) |
| 456 | subscr_put(subscr); |
| 457 | |
| 458 | return rc; |
| 459 | } |
| 460 | |
| 461 | int gprs_subscr_query_auth_info(struct gsm_subscriber *subscr) |
| 462 | { |
| 463 | struct gprs_gsup_message gsup_msg = {0}; |
| 464 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 465 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 466 | "subscriber auth info is not available\n"); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 467 | |
| 468 | gsup_msg.message_type = GPRS_GSUP_MSGT_SEND_AUTH_INFO_REQUEST; |
| 469 | return gprs_subscr_tx_gsup_message(subscr, &gsup_msg); |
| 470 | } |
| 471 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 472 | int gprs_subscr_location_update(struct gsm_subscriber *subscr) |
| 473 | { |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 474 | struct gprs_gsup_message gsup_msg = {0}; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 475 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 476 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 477 | "subscriber data is not available\n"); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 478 | |
| 479 | gsup_msg.message_type = GPRS_GSUP_MSGT_UPDATE_LOCATION_REQUEST; |
| 480 | return gprs_subscr_tx_gsup_message(subscr, &gsup_msg); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 481 | } |
| 482 | |
| 483 | void gprs_subscr_update(struct gsm_subscriber *subscr) |
| 484 | { |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 485 | LOGGSUBSCRP(LOGL_DEBUG, subscr, "Updating subscriber data\n"); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 486 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 487 | subscr->flags &= ~GPRS_SUBSCRIBER_UPDATE_LOCATION_PENDING; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 488 | subscr->flags &= ~GSM_SUBSCRIBER_FIRST_CONTACT; |
| 489 | |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 490 | sgsn_update_subscriber_data(subscr->sgsn_data->mm, subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 491 | } |
| 492 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 493 | void gprs_subscr_update_auth_info(struct gsm_subscriber *subscr) |
| 494 | { |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 495 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 496 | "Updating subscriber authentication info\n"); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 497 | |
| 498 | subscr->flags &= ~GPRS_SUBSCRIBER_UPDATE_AUTH_INFO_PENDING; |
| 499 | subscr->flags &= ~GSM_SUBSCRIBER_FIRST_CONTACT; |
| 500 | |
| 501 | sgsn_update_subscriber_data(subscr->sgsn_data->mm, subscr); |
| 502 | } |
| 503 | |
| 504 | struct gsm_subscriber *gprs_subscr_get_or_create_by_mmctx(struct sgsn_mm_ctx *mmctx) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 505 | { |
| 506 | struct gsm_subscriber *subscr = NULL; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 507 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 508 | if (mmctx->subscr) |
| 509 | return subscr_get(mmctx->subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 510 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 511 | if (mmctx->imsi[0]) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 512 | subscr = gprs_subscr_get_by_imsi(mmctx->imsi); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 513 | |
| 514 | if (!subscr) { |
| 515 | subscr = gprs_subscr_get_or_create(mmctx->imsi); |
| 516 | subscr->flags |= GSM_SUBSCRIBER_FIRST_CONTACT; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 517 | } |
| 518 | |
| 519 | if (strcpy(subscr->equipment.imei, mmctx->imei) != 0) { |
| 520 | strncpy(subscr->equipment.imei, mmctx->imei, GSM_IMEI_LENGTH-1); |
| 521 | subscr->equipment.imei[GSM_IMEI_LENGTH-1] = 0; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 522 | } |
| 523 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 524 | if (subscr->lac != mmctx->ra.lac) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 525 | subscr->lac = mmctx->ra.lac; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 526 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 527 | subscr->sgsn_data->mm = mmctx; |
| 528 | mmctx->subscr = subscr_get(subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 529 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 530 | return subscr; |
| 531 | } |
| 532 | |
| 533 | int gprs_subscr_request_update_location(struct sgsn_mm_ctx *mmctx) |
| 534 | { |
| 535 | struct gsm_subscriber *subscr = NULL; |
| 536 | int rc; |
| 537 | |
| 538 | LOGMMCTXP(LOGL_DEBUG, mmctx, "Requesting subscriber data update\n"); |
| 539 | |
| 540 | subscr = gprs_subscr_get_or_create_by_mmctx(mmctx); |
| 541 | |
| 542 | subscr->flags |= GPRS_SUBSCRIBER_UPDATE_LOCATION_PENDING; |
| 543 | |
| 544 | rc = gprs_subscr_location_update(subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 545 | subscr_put(subscr); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 546 | return rc; |
| 547 | } |
| 548 | |
| 549 | int gprs_subscr_request_auth_info(struct sgsn_mm_ctx *mmctx) |
| 550 | { |
| 551 | struct gsm_subscriber *subscr = NULL; |
| 552 | int rc; |
| 553 | |
| 554 | LOGMMCTXP(LOGL_DEBUG, mmctx, "Requesting subscriber authentication info\n"); |
| 555 | |
| 556 | subscr = gprs_subscr_get_or_create_by_mmctx(mmctx); |
| 557 | |
| 558 | subscr->flags |= GPRS_SUBSCRIBER_UPDATE_AUTH_INFO_PENDING; |
| 559 | |
| 560 | rc = gprs_subscr_query_auth_info(subscr); |
| 561 | subscr_put(subscr); |
| 562 | return rc; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 563 | } |