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 | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 76 | static struct sgsn_subscriber_data *sgsn_subscriber_data_alloc(void *ctx) |
| 77 | { |
| 78 | struct sgsn_subscriber_data *sdata; |
Jacob Erlbeck | 7921ab1 | 2014-12-08 15:52:00 +0100 | [diff] [blame] | 79 | int idx; |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 80 | |
| 81 | sdata = talloc_zero(ctx, struct sgsn_subscriber_data); |
| 82 | |
Jacob Erlbeck | 7921ab1 | 2014-12-08 15:52:00 +0100 | [diff] [blame] | 83 | for (idx = 0; idx < ARRAY_SIZE(sdata->auth_triplets); idx++) |
| 84 | sdata->auth_triplets[idx].key_seq = GSM_KEY_SEQ_INVAL; |
| 85 | |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 86 | return sdata; |
| 87 | } |
| 88 | |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 89 | struct gsm_subscriber *gprs_subscr_get_or_create(const char *imsi) |
| 90 | { |
| 91 | struct gsm_subscriber *subscr; |
| 92 | |
| 93 | subscr = subscr_get_or_create(NULL, imsi); |
| 94 | if (!subscr) |
| 95 | return NULL; |
| 96 | |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 97 | if (!subscr->sgsn_data) |
| 98 | subscr->sgsn_data = sgsn_subscriber_data_alloc(subscr); |
| 99 | |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 100 | subscr->keep_in_ram = 1; |
| 101 | |
| 102 | return subscr; |
| 103 | } |
| 104 | |
| 105 | struct gsm_subscriber *gprs_subscr_get_by_imsi(const char *imsi) |
| 106 | { |
| 107 | return subscr_active_by_imsi(NULL, imsi); |
| 108 | } |
| 109 | |
| 110 | void gprs_subscr_delete(struct gsm_subscriber *subscr) |
| 111 | { |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 112 | if (subscr->sgsn_data->mm) { |
| 113 | subscr_put(subscr->sgsn_data->mm->subscr); |
| 114 | subscr->sgsn_data->mm->subscr = NULL; |
| 115 | subscr->sgsn_data->mm = NULL; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 116 | } |
| 117 | |
| 118 | if ((subscr->flags & GPRS_SUBSCRIBER_CANCELLED) || |
| 119 | (subscr->flags & GSM_SUBSCRIBER_FIRST_CONTACT)) |
| 120 | subscr->keep_in_ram = 0; |
| 121 | |
| 122 | subscr_put(subscr); |
| 123 | } |
| 124 | |
| 125 | void gprs_subscr_put_and_cancel(struct gsm_subscriber *subscr) |
| 126 | { |
| 127 | subscr->authorized = 0; |
| 128 | subscr->flags |= GPRS_SUBSCRIBER_CANCELLED; |
| 129 | |
| 130 | gprs_subscr_update(subscr); |
| 131 | |
| 132 | gprs_subscr_delete(subscr); |
| 133 | } |
| 134 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 135 | static int gprs_subscr_tx_gsup_message(struct gsm_subscriber *subscr, |
| 136 | struct gprs_gsup_message *gsup_msg) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 137 | { |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 138 | struct msgb *msg = gprs_gsup_msgb_alloc(); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 139 | |
| 140 | strncpy(gsup_msg->imsi, subscr->imsi, sizeof(gsup_msg->imsi) - 1); |
| 141 | |
| 142 | gprs_gsup_encode(msg, gsup_msg); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 143 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 144 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 145 | "Sending GSUP, will send: %s\n", msgb_hexdump(msg)); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 146 | |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 147 | if (!sgsn->gsup_client) { |
| 148 | msgb_free(msg); |
| 149 | return -ENOTSUP; |
| 150 | } |
| 151 | |
| 152 | return gprs_gsup_client_send(sgsn->gsup_client, msg); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 153 | } |
| 154 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 155 | static int gprs_subscr_handle_gsup_auth_res(struct gsm_subscriber *subscr, |
| 156 | struct gprs_gsup_message *gsup_msg) |
| 157 | { |
| 158 | unsigned idx; |
| 159 | struct sgsn_subscriber_data *sdata = subscr->sgsn_data; |
| 160 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 161 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 162 | "Got SendAuthenticationInfoResult, num_auth_tuples = %d\n", |
| 163 | gsup_msg->num_auth_tuples); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 164 | |
| 165 | if (gsup_msg->num_auth_tuples > 0) { |
| 166 | memset(sdata->auth_triplets, 0, sizeof(sdata->auth_triplets)); |
| 167 | |
| 168 | for (idx = 0; idx < ARRAY_SIZE(sdata->auth_triplets); idx++) |
| 169 | sdata->auth_triplets[idx].key_seq = GSM_KEY_SEQ_INVAL; |
| 170 | } |
| 171 | |
| 172 | for (idx = 0; idx < gsup_msg->num_auth_tuples; idx++) { |
| 173 | size_t key_seq = gsup_msg->auth_tuples[idx].key_seq; |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 174 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 175 | "Adding auth tuple, cksn = %d\n", key_seq); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 176 | if (key_seq >= ARRAY_SIZE(sdata->auth_triplets)) { |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 177 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 178 | "Skipping auth triplet with invalid cksn %d\n", |
| 179 | key_seq); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 180 | continue; |
| 181 | } |
| 182 | sdata->auth_triplets[key_seq] = gsup_msg->auth_tuples[idx]; |
| 183 | } |
| 184 | |
| 185 | sdata->auth_triplets_updated = 1; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 186 | sdata->error_cause = 0; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 187 | |
| 188 | gprs_subscr_update_auth_info(subscr); |
| 189 | |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | static int gprs_subscr_handle_gsup_upd_loc_res(struct gsm_subscriber *subscr, |
| 194 | struct gprs_gsup_message *gsup_msg) |
| 195 | { |
| 196 | unsigned idx; |
| 197 | |
| 198 | if (gsup_msg->pdp_info_compl) { |
| 199 | LOGP(DGPRS, LOGL_INFO, "Would clear existing PDP info\n"); |
| 200 | |
| 201 | /* TODO: clear existing PDP info entries */ |
| 202 | } |
| 203 | |
| 204 | for (idx = 0; idx < gsup_msg->num_pdp_infos; idx++) { |
| 205 | struct gprs_gsup_pdp_info *pdp_info = &gsup_msg->pdp_infos[idx]; |
| 206 | size_t ctx_id = pdp_info->context_id; |
| 207 | |
| 208 | LOGP(DGPRS, LOGL_INFO, |
| 209 | "Would set PDP info, context id = %d, APN = %s\n", |
| 210 | ctx_id, osmo_hexdump(pdp_info->apn_enc, pdp_info->apn_enc_len)); |
| 211 | |
| 212 | /* TODO: set PDP info [ctx_id] */ |
| 213 | } |
| 214 | |
| 215 | subscr->authorized = 1; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 216 | subscr->sgsn_data->error_cause = 0; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 217 | |
| 218 | gprs_subscr_update(subscr); |
| 219 | return 0; |
| 220 | } |
| 221 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 222 | static int check_cause(int cause) |
| 223 | { |
| 224 | switch (cause) { |
| 225 | case GMM_CAUSE_IMSI_UNKNOWN ... GMM_CAUSE_ILLEGAL_ME: |
| 226 | case GMM_CAUSE_GPRS_NOTALLOWED ... GMM_CAUSE_NO_GPRS_PLMN: |
| 227 | return EACCES; |
| 228 | |
| 229 | case GMM_CAUSE_MSC_TEMP_NOTREACH ... GMM_CAUSE_CONGESTION: |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame^] | 230 | return EHOSTUNREACH; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 231 | |
| 232 | case GMM_CAUSE_SEM_INCORR_MSG ... GMM_CAUSE_PROTO_ERR_UNSPEC: |
| 233 | default: |
| 234 | return EINVAL; |
| 235 | } |
| 236 | } |
| 237 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 238 | static int gprs_subscr_handle_gsup_auth_err(struct gsm_subscriber *subscr, |
| 239 | struct gprs_gsup_message *gsup_msg) |
| 240 | { |
| 241 | unsigned idx; |
| 242 | struct sgsn_subscriber_data *sdata = subscr->sgsn_data; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 243 | int cause_err; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 244 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 245 | cause_err = check_cause(gsup_msg->cause); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 246 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 247 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 248 | "Send authentication info has failed with cause %d, " |
| 249 | "handled as: %s\n", |
| 250 | gsup_msg->cause, strerror(cause_err)); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 251 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 252 | switch (cause_err) { |
| 253 | case EACCES: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 254 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 255 | "GPRS send auth info req failed, access denied, " |
| 256 | "GMM cause = '%s' (%d)\n", |
| 257 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 258 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 259 | /* Clear auth tuples */ |
| 260 | memset(sdata->auth_triplets, 0, sizeof(sdata->auth_triplets)); |
| 261 | for (idx = 0; idx < ARRAY_SIZE(sdata->auth_triplets); idx++) |
| 262 | sdata->auth_triplets[idx].key_seq = GSM_KEY_SEQ_INVAL; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 263 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 264 | subscr->authorized = 0; |
| 265 | sdata->error_cause = gsup_msg->cause; |
| 266 | gprs_subscr_update_auth_info(subscr); |
| 267 | break; |
| 268 | |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame^] | 269 | case EHOSTUNREACH: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 270 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 271 | "GPRS send auth info req failed, GMM cause = '%s' (%d)\n", |
| 272 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 273 | gsup_msg->cause); |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame^] | 274 | |
| 275 | sdata->error_cause = gsup_msg->cause; |
| 276 | gprs_subscr_update_auth_info(subscr); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 277 | break; |
| 278 | |
| 279 | default: |
| 280 | case EINVAL: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 281 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 282 | "GSUP protocol remote error, GMM cause = '%s' (%d)\n", |
| 283 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 284 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 285 | break; |
| 286 | } |
| 287 | |
| 288 | return -gsup_msg->cause; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | static int gprs_subscr_handle_gsup_upd_loc_err(struct gsm_subscriber *subscr, |
| 292 | struct gprs_gsup_message *gsup_msg) |
| 293 | { |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 294 | int cause_err; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 295 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 296 | cause_err = check_cause(gsup_msg->cause); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 297 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 298 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 299 | "Update location has failed with cause %d, handled as: %s\n", |
| 300 | gsup_msg->cause, strerror(cause_err)); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 301 | |
| 302 | switch (cause_err) { |
| 303 | case EACCES: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 304 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 305 | "GPRS update location failed, access denied, " |
| 306 | "GMM cause = '%s' (%d)\n", |
| 307 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 308 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 309 | |
| 310 | subscr->authorized = 0; |
| 311 | subscr->sgsn_data->error_cause = gsup_msg->cause; |
| 312 | gprs_subscr_update_auth_info(subscr); |
| 313 | break; |
| 314 | |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame^] | 315 | case EHOSTUNREACH: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 316 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 317 | "GPRS update location failed, GMM cause = '%s' (%d)\n", |
| 318 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 319 | gsup_msg->cause); |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame^] | 320 | |
| 321 | subscr->sgsn_data->error_cause = gsup_msg->cause; |
| 322 | gprs_subscr_update_auth_info(subscr); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 323 | break; |
| 324 | |
| 325 | default: |
| 326 | case EINVAL: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 327 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 328 | "GSUP protocol remote error, GMM cause = '%s' (%d)\n", |
| 329 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 330 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 331 | break; |
| 332 | } |
| 333 | |
| 334 | return -gsup_msg->cause; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | int gprs_subscr_rx_gsup_message(struct msgb *msg) |
| 338 | { |
| 339 | uint8_t *data = msgb_l2(msg); |
| 340 | size_t data_len = msgb_l2len(msg); |
| 341 | int rc = 0; |
| 342 | |
| 343 | struct gprs_gsup_message gsup_msg = {0}; |
| 344 | struct gsm_subscriber *subscr; |
| 345 | |
| 346 | rc = gprs_gsup_decode(data, data_len, &gsup_msg); |
| 347 | if (rc < 0) { |
| 348 | LOGP(DGPRS, LOGL_ERROR, |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 349 | "decoding GSUP message fails with error '%s' (%d)\n", |
| 350 | get_value_string(gsm48_gmm_cause_names, -rc), -rc); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 351 | return rc; |
| 352 | } |
| 353 | |
| 354 | if (!gsup_msg.imsi[0]) |
| 355 | return -GMM_CAUSE_INV_MAND_INFO; |
| 356 | |
| 357 | if (gsup_msg.message_type == GPRS_GSUP_MSGT_INSERT_DATA_REQUEST) |
| 358 | subscr = gprs_subscr_get_or_create(gsup_msg.imsi); |
| 359 | else |
| 360 | subscr = gprs_subscr_get_by_imsi(gsup_msg.imsi); |
| 361 | |
| 362 | if (!subscr) { |
| 363 | LOGP(DGPRS, LOGL_NOTICE, |
| 364 | "Unknown IMSI %s, discarding GSUP message\n", gsup_msg.imsi); |
| 365 | return -GMM_CAUSE_IMSI_UNKNOWN; |
| 366 | } |
| 367 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 368 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 369 | "Received GSUP message of type 0x%02x\n", gsup_msg.message_type); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 370 | |
| 371 | switch (gsup_msg.message_type) { |
| 372 | case GPRS_GSUP_MSGT_LOCATION_CANCEL_REQUEST: |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 373 | subscr->sgsn_data->error_cause = 0; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 374 | gprs_subscr_put_and_cancel(subscr); |
| 375 | subscr = NULL; |
| 376 | break; |
| 377 | |
| 378 | case GPRS_GSUP_MSGT_SEND_AUTH_INFO_RESULT: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 379 | rc = gprs_subscr_handle_gsup_auth_res(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 380 | break; |
| 381 | |
| 382 | case GPRS_GSUP_MSGT_SEND_AUTH_INFO_ERROR: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 383 | rc = gprs_subscr_handle_gsup_auth_err(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 384 | break; |
| 385 | |
| 386 | case GPRS_GSUP_MSGT_UPDATE_LOCATION_RESULT: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 387 | rc = gprs_subscr_handle_gsup_upd_loc_res(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 388 | break; |
| 389 | |
| 390 | case GPRS_GSUP_MSGT_UPDATE_LOCATION_ERROR: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 391 | rc = gprs_subscr_handle_gsup_upd_loc_err(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 392 | break; |
| 393 | |
| 394 | case GPRS_GSUP_MSGT_PURGE_MS_ERROR: |
| 395 | case GPRS_GSUP_MSGT_PURGE_MS_RESULT: |
| 396 | case GPRS_GSUP_MSGT_INSERT_DATA_REQUEST: |
| 397 | case GPRS_GSUP_MSGT_DELETE_DATA_REQUEST: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 398 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 399 | "Rx GSUP message type %d not yet implemented\n", |
| 400 | gsup_msg.message_type); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 401 | rc = -GMM_CAUSE_MSGT_NOTEXIST_NOTIMPL; |
| 402 | break; |
| 403 | |
| 404 | default: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 405 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 406 | "Rx GSUP message type %d not valid at SGSN\n", |
| 407 | gsup_msg.message_type); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 408 | rc = -GMM_CAUSE_MSGT_INCOMP_P_STATE; |
| 409 | break; |
| 410 | }; |
| 411 | |
| 412 | if (subscr) |
| 413 | subscr_put(subscr); |
| 414 | |
| 415 | return rc; |
| 416 | } |
| 417 | |
| 418 | int gprs_subscr_query_auth_info(struct gsm_subscriber *subscr) |
| 419 | { |
| 420 | struct gprs_gsup_message gsup_msg = {0}; |
| 421 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 422 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 423 | "subscriber auth info is not available\n"); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 424 | |
| 425 | gsup_msg.message_type = GPRS_GSUP_MSGT_SEND_AUTH_INFO_REQUEST; |
| 426 | return gprs_subscr_tx_gsup_message(subscr, &gsup_msg); |
| 427 | } |
| 428 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 429 | int gprs_subscr_location_update(struct gsm_subscriber *subscr) |
| 430 | { |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 431 | struct gprs_gsup_message gsup_msg = {0}; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 432 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 433 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 434 | "subscriber data is not available\n"); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 435 | |
| 436 | gsup_msg.message_type = GPRS_GSUP_MSGT_UPDATE_LOCATION_REQUEST; |
| 437 | return gprs_subscr_tx_gsup_message(subscr, &gsup_msg); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | void gprs_subscr_update(struct gsm_subscriber *subscr) |
| 441 | { |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 442 | LOGGSUBSCRP(LOGL_DEBUG, subscr, "Updating subscriber data\n"); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 443 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 444 | subscr->flags &= ~GPRS_SUBSCRIBER_UPDATE_LOCATION_PENDING; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 445 | subscr->flags &= ~GSM_SUBSCRIBER_FIRST_CONTACT; |
| 446 | |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 447 | sgsn_update_subscriber_data(subscr->sgsn_data->mm, subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 448 | } |
| 449 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 450 | void gprs_subscr_update_auth_info(struct gsm_subscriber *subscr) |
| 451 | { |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 452 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 453 | "Updating subscriber authentication info\n"); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 454 | |
| 455 | subscr->flags &= ~GPRS_SUBSCRIBER_UPDATE_AUTH_INFO_PENDING; |
| 456 | subscr->flags &= ~GSM_SUBSCRIBER_FIRST_CONTACT; |
| 457 | |
| 458 | sgsn_update_subscriber_data(subscr->sgsn_data->mm, subscr); |
| 459 | } |
| 460 | |
| 461 | 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] | 462 | { |
| 463 | struct gsm_subscriber *subscr = NULL; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 464 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 465 | if (mmctx->subscr) |
| 466 | return subscr_get(mmctx->subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 467 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 468 | if (mmctx->imsi[0]) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 469 | subscr = gprs_subscr_get_by_imsi(mmctx->imsi); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 470 | |
| 471 | if (!subscr) { |
| 472 | subscr = gprs_subscr_get_or_create(mmctx->imsi); |
| 473 | subscr->flags |= GSM_SUBSCRIBER_FIRST_CONTACT; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 474 | } |
| 475 | |
| 476 | if (strcpy(subscr->equipment.imei, mmctx->imei) != 0) { |
| 477 | strncpy(subscr->equipment.imei, mmctx->imei, GSM_IMEI_LENGTH-1); |
| 478 | subscr->equipment.imei[GSM_IMEI_LENGTH-1] = 0; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 479 | } |
| 480 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 481 | if (subscr->lac != mmctx->ra.lac) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 482 | subscr->lac = mmctx->ra.lac; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 483 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 484 | subscr->sgsn_data->mm = mmctx; |
| 485 | mmctx->subscr = subscr_get(subscr); |
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 | return subscr; |
| 488 | } |
| 489 | |
| 490 | int gprs_subscr_request_update_location(struct sgsn_mm_ctx *mmctx) |
| 491 | { |
| 492 | struct gsm_subscriber *subscr = NULL; |
| 493 | int rc; |
| 494 | |
| 495 | LOGMMCTXP(LOGL_DEBUG, mmctx, "Requesting subscriber data update\n"); |
| 496 | |
| 497 | subscr = gprs_subscr_get_or_create_by_mmctx(mmctx); |
| 498 | |
| 499 | subscr->flags |= GPRS_SUBSCRIBER_UPDATE_LOCATION_PENDING; |
| 500 | |
| 501 | rc = gprs_subscr_location_update(subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 502 | subscr_put(subscr); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 503 | return rc; |
| 504 | } |
| 505 | |
| 506 | int gprs_subscr_request_auth_info(struct sgsn_mm_ctx *mmctx) |
| 507 | { |
| 508 | struct gsm_subscriber *subscr = NULL; |
| 509 | int rc; |
| 510 | |
| 511 | LOGMMCTXP(LOGL_DEBUG, mmctx, "Requesting subscriber authentication info\n"); |
| 512 | |
| 513 | subscr = gprs_subscr_get_or_create_by_mmctx(mmctx); |
| 514 | |
| 515 | subscr->flags |= GPRS_SUBSCRIBER_UPDATE_AUTH_INFO_PENDING; |
| 516 | |
| 517 | rc = gprs_subscr_query_auth_info(subscr); |
| 518 | subscr_put(subscr); |
| 519 | return rc; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 520 | } |