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 |
Holger Hans Peter Freyther | 9ba273d | 2015-04-23 09:53:53 -0400 | [diff] [blame] | 4 | * (C) 2015 by Holger Hans Peter Freyther |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 5 | * |
| 6 | * All Rights Reserved |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU Affero General Public License as published by |
| 10 | * the Free Software Foundation; either version 3 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU Affero General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Affero General Public License |
| 19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 20 | * |
| 21 | */ |
| 22 | |
Harald Welte | 53373bc | 2016-04-20 17:11:43 +0200 | [diff] [blame] | 23 | #include <osmocom/gsm/protocol/gsm_04_08_gprs.h> |
Harald Welte | 23d77d5 | 2016-04-25 19:07:34 +0200 | [diff] [blame] | 24 | #include <osmocom/gsm/gsup.h> |
Neels Hofmeyr | 93bafb6 | 2017-01-13 03:12:08 +0100 | [diff] [blame] | 25 | #include <osmocom/core/utils.h> |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 26 | #include <osmocom/core/logging.h> |
| 27 | #include <openbsc/gprs_subscriber.h> |
Neels Hofmeyr | eaaee92 | 2016-12-08 21:22:58 +0100 | [diff] [blame] | 28 | #include <openbsc/gsup_client.h> |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 29 | |
| 30 | #include <openbsc/sgsn.h> |
| 31 | #include <openbsc/gprs_sgsn.h> |
| 32 | #include <openbsc/gprs_gmm.h> |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 33 | #include <openbsc/gprs_utils.h> |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 34 | |
| 35 | #include <openbsc/debug.h> |
| 36 | |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 37 | #include <netinet/in.h> |
| 38 | #include <arpa/inet.h> |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 39 | #include <limits.h> |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 40 | |
Jacob Erlbeck | 743dec4 | 2015-01-08 15:18:39 +0100 | [diff] [blame] | 41 | #define SGSN_SUBSCR_MAX_RETRIES 3 |
| 42 | #define SGSN_SUBSCR_RETRY_INTERVAL 10 |
| 43 | |
Jacob Erlbeck | 929acdf | 2015-01-27 13:47:24 +0100 | [diff] [blame] | 44 | #define LOGGSUPP(level, gsup, fmt, args...) \ |
| 45 | LOGP(DGPRS, level, "GSUP(%s) " fmt, \ |
| 46 | (gsup)->imsi, \ |
| 47 | ## args) |
| 48 | |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 49 | extern void *tall_bsc_ctx; |
| 50 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 51 | LLIST_HEAD(_gprs_subscribers); |
| 52 | struct llist_head * const gprs_subscribers = &_gprs_subscribers; |
| 53 | |
Neels Hofmeyr | 814fef0 | 2016-12-08 21:19:57 +0100 | [diff] [blame] | 54 | static int gsup_read_cb(struct gsup_client *gsupc, struct msgb *msg); |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 55 | |
| 56 | /* TODO: Some functions are specific to the SGSN, but this file is more general |
| 57 | * (it has gprs_* name). Either move these functions elsewhere, split them and |
| 58 | * move a part, or replace the gprs_ prefix by sgsn_. The applies to |
| 59 | * gprs_subscr_init, gsup_read_cb, and gprs_subscr_tx_gsup_message. |
| 60 | */ |
| 61 | |
| 62 | int gprs_subscr_init(struct sgsn_instance *sgi) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 63 | { |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 64 | const char *addr_str; |
| 65 | |
| 66 | if (!sgi->cfg.gsup_server_addr.sin_addr.s_addr) |
| 67 | return 0; |
| 68 | |
| 69 | addr_str = inet_ntoa(sgi->cfg.gsup_server_addr.sin_addr); |
| 70 | |
Neels Hofmeyr | 814fef0 | 2016-12-08 21:19:57 +0100 | [diff] [blame] | 71 | sgi->gsup_client = gsup_client_create( |
Neels Hofmeyr | 4c30529 | 2017-03-04 03:15:53 +0100 | [diff] [blame] | 72 | "SGSN", |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 73 | addr_str, sgi->cfg.gsup_server_port, |
Neels Hofmeyr | 9c534fd | 2015-10-12 11:57:37 +0200 | [diff] [blame] | 74 | &gsup_read_cb, |
| 75 | &sgi->cfg.oap); |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 76 | |
| 77 | if (!sgi->gsup_client) |
| 78 | return -1; |
| 79 | |
| 80 | return 1; |
| 81 | } |
| 82 | |
Neels Hofmeyr | 814fef0 | 2016-12-08 21:19:57 +0100 | [diff] [blame] | 83 | static int gsup_read_cb(struct gsup_client *gsupc, struct msgb *msg) |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 84 | { |
| 85 | int rc; |
| 86 | |
| 87 | rc = gprs_subscr_rx_gsup_message(msg); |
Jacob Erlbeck | e154d8b | 2014-12-19 19:15:55 +0100 | [diff] [blame] | 88 | msgb_free(msg); |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 89 | if (rc < 0) |
| 90 | return -1; |
| 91 | |
| 92 | return rc; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 93 | } |
| 94 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 95 | int gprs_subscr_purge(struct gprs_subscr *subscr); |
Jacob Erlbeck | 0f47b8f | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 96 | |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 97 | static struct sgsn_subscriber_data *sgsn_subscriber_data_alloc(void *ctx) |
| 98 | { |
| 99 | struct sgsn_subscriber_data *sdata; |
Jacob Erlbeck | 7921ab1 | 2014-12-08 15:52:00 +0100 | [diff] [blame] | 100 | int idx; |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 101 | |
| 102 | sdata = talloc_zero(ctx, struct sgsn_subscriber_data); |
| 103 | |
Jacob Erlbeck | d6267d1 | 2015-01-19 11:10:04 +0100 | [diff] [blame] | 104 | sdata->error_cause = SGSN_ERROR_CAUSE_NONE; |
| 105 | |
Jacob Erlbeck | 7921ab1 | 2014-12-08 15:52:00 +0100 | [diff] [blame] | 106 | for (idx = 0; idx < ARRAY_SIZE(sdata->auth_triplets); idx++) |
| 107 | sdata->auth_triplets[idx].key_seq = GSM_KEY_SEQ_INVAL; |
| 108 | |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 109 | INIT_LLIST_HEAD(&sdata->pdp_list); |
| 110 | |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 111 | return sdata; |
| 112 | } |
| 113 | |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 114 | struct sgsn_subscriber_pdp_data* sgsn_subscriber_pdp_data_alloc( |
| 115 | struct sgsn_subscriber_data *sdata) |
| 116 | { |
| 117 | struct sgsn_subscriber_pdp_data* pdata; |
| 118 | |
| 119 | pdata = talloc_zero(sdata, struct sgsn_subscriber_pdp_data); |
| 120 | |
| 121 | llist_add_tail(&pdata->list, &sdata->pdp_list); |
| 122 | |
| 123 | return pdata; |
| 124 | } |
| 125 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 126 | struct gprs_subscr *gprs_subscr_get_by_imsi(const char *imsi) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 127 | { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 128 | struct gprs_subscr *gsub; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 129 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 130 | if (!imsi || !*imsi) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 131 | return NULL; |
| 132 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 133 | llist_for_each_entry(gsub, gprs_subscribers, entry) { |
| 134 | if (!strcmp(gsub->imsi, imsi)) |
| 135 | return gprs_subscr_get(gsub); |
| 136 | } |
| 137 | return NULL; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 138 | } |
| 139 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 140 | static struct gprs_subscr *gprs_subscr_alloc(void) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 141 | { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 142 | struct gprs_subscr *gsub; |
| 143 | gsub = talloc_zero(tall_bsc_ctx, struct gprs_subscr); |
| 144 | if (!gsub) |
| 145 | return NULL; |
| 146 | llist_add_tail(&gsub->entry, gprs_subscribers); |
| 147 | gsub->use_count = 1; |
| 148 | gsub->tmsi = GSM_RESERVED_TMSI; |
| 149 | return gsub; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 150 | } |
| 151 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 152 | struct gprs_subscr *gprs_subscr_get_or_create(const char *imsi) |
| 153 | { |
| 154 | struct gprs_subscr *gsub; |
| 155 | |
| 156 | gsub = gprs_subscr_get_by_imsi(imsi); |
| 157 | if (!gsub) { |
| 158 | gsub = gprs_subscr_alloc(); |
| 159 | if (!gsub) |
| 160 | return NULL; |
Neels Hofmeyr | ca06e04 | 2017-03-08 18:30:22 +0100 | [diff] [blame] | 161 | osmo_strlcpy(gsub->imsi, imsi, sizeof(gsub->imsi)); |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | if (!gsub->sgsn_data) |
| 165 | gsub->sgsn_data = sgsn_subscriber_data_alloc(gsub); |
| 166 | return gsub; |
| 167 | } |
| 168 | |
| 169 | void gprs_subscr_cleanup(struct gprs_subscr *subscr) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 170 | { |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 171 | if (subscr->sgsn_data->mm) { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 172 | gprs_subscr_put(subscr->sgsn_data->mm->subscr); |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 173 | subscr->sgsn_data->mm->subscr = NULL; |
| 174 | subscr->sgsn_data->mm = NULL; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 175 | } |
| 176 | |
Holger Hans Peter Freyther | 1d778fd | 2015-01-20 21:14:03 +0100 | [diff] [blame] | 177 | if (subscr->flags & GPRS_SUBSCRIBER_ENABLE_PURGE) { |
| 178 | gprs_subscr_purge(subscr); |
| 179 | subscr->flags &= ~GPRS_SUBSCRIBER_ENABLE_PURGE; |
Jacob Erlbeck | 0f47b8f | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 180 | } |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 181 | } |
| 182 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 183 | void gprs_subscr_cancel(struct gprs_subscr *subscr) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 184 | { |
| 185 | subscr->authorized = 0; |
| 186 | subscr->flags |= GPRS_SUBSCRIBER_CANCELLED; |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 187 | subscr->flags &= ~GPRS_SUBSCRIBER_ENABLE_PURGE; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 188 | |
| 189 | gprs_subscr_update(subscr); |
Jacob Erlbeck | 3e4e58f | 2015-01-26 11:07:24 +0100 | [diff] [blame] | 190 | gprs_subscr_cleanup(subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 191 | } |
| 192 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 193 | static int gprs_subscr_tx_gsup_message(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 194 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 195 | { |
Neels Hofmeyr | 814fef0 | 2016-12-08 21:19:57 +0100 | [diff] [blame] | 196 | struct msgb *msg = gsup_client_msgb_alloc(); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 197 | |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 198 | if (strlen(gsup_msg->imsi) == 0 && subscr) |
Neels Hofmeyr | 93bafb6 | 2017-01-13 03:12:08 +0100 | [diff] [blame] | 199 | osmo_strlcpy(gsup_msg->imsi, subscr->imsi, |
| 200 | sizeof(gsup_msg->imsi)); |
Max | 896c6f8 | 2016-07-01 15:24:44 +0200 | [diff] [blame] | 201 | gsup_msg->cn_domain = OSMO_GSUP_CN_DOMAIN_PS; |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 202 | osmo_gsup_encode(msg, gsup_msg); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 203 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 204 | LOGGSUBSCRP(LOGL_INFO, subscr, |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 205 | "Sending GSUP, will send: %s\n", msgb_hexdump(msg)); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 206 | |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 207 | if (!sgsn->gsup_client) { |
| 208 | msgb_free(msg); |
| 209 | return -ENOTSUP; |
| 210 | } |
| 211 | |
Neels Hofmeyr | 814fef0 | 2016-12-08 21:19:57 +0100 | [diff] [blame] | 212 | return gsup_client_send(sgsn->gsup_client, msg); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 213 | } |
| 214 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 215 | static int gprs_subscr_tx_gsup_error_reply(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 216 | struct osmo_gsup_message *gsup_orig, |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 217 | enum gsm48_gmm_cause cause) |
| 218 | { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 219 | struct osmo_gsup_message gsup_reply = {0}; |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 220 | |
Neels Hofmeyr | 93bafb6 | 2017-01-13 03:12:08 +0100 | [diff] [blame] | 221 | osmo_strlcpy(gsup_reply.imsi, gsup_orig->imsi, |
| 222 | sizeof(gsup_reply.imsi)); |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 223 | gsup_reply.cause = cause; |
| 224 | gsup_reply.message_type = |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 225 | OSMO_GSUP_TO_MSGT_ERROR(gsup_orig->message_type); |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 226 | |
| 227 | return gprs_subscr_tx_gsup_message(subscr, &gsup_reply); |
| 228 | } |
| 229 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 230 | static int gprs_subscr_handle_gsup_auth_res(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 231 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 232 | { |
| 233 | unsigned idx; |
| 234 | struct sgsn_subscriber_data *sdata = subscr->sgsn_data; |
| 235 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 236 | LOGGSUBSCRP(LOGL_INFO, subscr, |
Harald Welte | 121e9a4 | 2016-04-20 13:13:19 +0200 | [diff] [blame] | 237 | "Got SendAuthenticationInfoResult, num_auth_vectors = %zu\n", |
| 238 | gsup_msg->num_auth_vectors); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 239 | |
Harald Welte | 121e9a4 | 2016-04-20 13:13:19 +0200 | [diff] [blame] | 240 | if (gsup_msg->num_auth_vectors > 0) { |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 241 | memset(sdata->auth_triplets, 0, sizeof(sdata->auth_triplets)); |
| 242 | |
| 243 | for (idx = 0; idx < ARRAY_SIZE(sdata->auth_triplets); idx++) |
| 244 | sdata->auth_triplets[idx].key_seq = GSM_KEY_SEQ_INVAL; |
| 245 | } |
| 246 | |
Harald Welte | 121e9a4 | 2016-04-20 13:13:19 +0200 | [diff] [blame] | 247 | for (idx = 0; idx < gsup_msg->num_auth_vectors; idx++) { |
| 248 | size_t key_seq = idx; |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 249 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
Holger Hans Peter Freyther | 8e6ecc9 | 2015-04-23 11:55:23 -0400 | [diff] [blame] | 250 | "Adding auth tuple, cksn = %zu\n", key_seq); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 251 | if (key_seq >= ARRAY_SIZE(sdata->auth_triplets)) { |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 252 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
Holger Hans Peter Freyther | 8e6ecc9 | 2015-04-23 11:55:23 -0400 | [diff] [blame] | 253 | "Skipping auth triplet with invalid cksn %zu\n", |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 254 | key_seq); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 255 | continue; |
| 256 | } |
Harald Welte | 121e9a4 | 2016-04-20 13:13:19 +0200 | [diff] [blame] | 257 | sdata->auth_triplets[key_seq].vec = gsup_msg->auth_vectors[idx]; |
| 258 | sdata->auth_triplets[key_seq].key_seq = key_seq; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | sdata->auth_triplets_updated = 1; |
Jacob Erlbeck | d6267d1 | 2015-01-19 11:10:04 +0100 | [diff] [blame] | 262 | sdata->error_cause = SGSN_ERROR_CAUSE_NONE; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 263 | |
| 264 | gprs_subscr_update_auth_info(subscr); |
| 265 | |
| 266 | return 0; |
| 267 | } |
| 268 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 269 | static int gprs_subscr_pdp_data_clear(struct gprs_subscr *subscr) |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 270 | { |
| 271 | struct sgsn_subscriber_pdp_data *pdp, *pdp2; |
| 272 | int count = 0; |
| 273 | |
| 274 | llist_for_each_entry_safe(pdp, pdp2, &subscr->sgsn_data->pdp_list, list) { |
| 275 | llist_del(&pdp->list); |
| 276 | talloc_free(pdp); |
| 277 | count += 1; |
| 278 | } |
| 279 | |
| 280 | return count; |
| 281 | } |
| 282 | |
| 283 | static struct sgsn_subscriber_pdp_data *gprs_subscr_pdp_data_get_by_id( |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 284 | struct gprs_subscr *subscr, unsigned context_id) |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 285 | { |
| 286 | struct sgsn_subscriber_pdp_data *pdp; |
| 287 | |
| 288 | llist_for_each_entry(pdp, &subscr->sgsn_data->pdp_list, list) { |
| 289 | if (pdp->context_id == context_id) |
| 290 | return pdp; |
| 291 | } |
| 292 | |
| 293 | return NULL; |
| 294 | } |
| 295 | |
| 296 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 297 | static void gprs_subscr_gsup_insert_data(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 298 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 299 | { |
Holger Hans Peter Freyther | 9ba273d | 2015-04-23 09:53:53 -0400 | [diff] [blame] | 300 | struct sgsn_subscriber_data *sdata = subscr->sgsn_data; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 301 | unsigned idx; |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 302 | int rc; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 303 | |
Holger Hans Peter Freyther | 9ba273d | 2015-04-23 09:53:53 -0400 | [diff] [blame] | 304 | if (gsup_msg->msisdn_enc) { |
| 305 | if (gsup_msg->msisdn_enc_len > sizeof(sdata->msisdn)) { |
| 306 | LOGP(DGPRS, LOGL_ERROR, "MSISDN too long (%zu)\n", |
| 307 | gsup_msg->msisdn_enc_len); |
| 308 | sdata->msisdn_len = 0; |
| 309 | } else { |
| 310 | memcpy(sdata->msisdn, gsup_msg->msisdn_enc, |
| 311 | gsup_msg->msisdn_enc_len); |
| 312 | sdata->msisdn_len = gsup_msg->msisdn_enc_len; |
| 313 | } |
| 314 | } |
| 315 | |
Holger Hans Peter Freyther | 10c0f56 | 2015-05-17 20:58:40 +0200 | [diff] [blame] | 316 | if (gsup_msg->hlr_enc) { |
| 317 | if (gsup_msg->hlr_enc_len > sizeof(sdata->hlr)) { |
| 318 | LOGP(DGPRS, LOGL_ERROR, "HLR-Number too long (%zu)\n", |
| 319 | gsup_msg->hlr_enc_len); |
| 320 | sdata->hlr_len = 0; |
| 321 | } else { |
| 322 | memcpy(sdata->hlr, gsup_msg->hlr_enc, |
| 323 | gsup_msg->hlr_enc_len); |
| 324 | sdata->hlr_len = gsup_msg->hlr_enc_len; |
| 325 | } |
| 326 | } |
| 327 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 328 | if (gsup_msg->pdp_info_compl) { |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 329 | rc = gprs_subscr_pdp_data_clear(subscr); |
| 330 | if (rc > 0) |
| 331 | LOGP(DGPRS, LOGL_INFO, "Cleared existing PDP info\n"); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | for (idx = 0; idx < gsup_msg->num_pdp_infos; idx++) { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 335 | struct osmo_gsup_pdp_info *pdp_info = &gsup_msg->pdp_infos[idx]; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 336 | size_t ctx_id = pdp_info->context_id; |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 337 | struct sgsn_subscriber_pdp_data *pdp_data; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 338 | |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 339 | if (pdp_info->apn_enc_len >= sizeof(pdp_data->apn_str)-1) { |
| 340 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
Holger Hans Peter Freyther | 8e6ecc9 | 2015-04-23 11:55:23 -0400 | [diff] [blame] | 341 | "APN too long, context id = %zu, APN = %s\n", |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 342 | ctx_id, osmo_hexdump(pdp_info->apn_enc, |
| 343 | pdp_info->apn_enc_len)); |
| 344 | continue; |
| 345 | } |
| 346 | |
Holger Hans Peter Freyther | 8cedded | 2015-04-23 11:33:35 -0400 | [diff] [blame] | 347 | if (pdp_info->qos_enc_len > sizeof(pdp_data->qos_subscribed)) { |
| 348 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 349 | "QoS info too long (%zu)\n", |
| 350 | pdp_info->qos_enc_len); |
| 351 | continue; |
| 352 | } |
| 353 | |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 354 | LOGGSUBSCRP(LOGL_INFO, subscr, |
Holger Hans Peter Freyther | 8e6ecc9 | 2015-04-23 11:55:23 -0400 | [diff] [blame] | 355 | "Will set PDP info, context id = %zu, APN = %s\n", |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 356 | ctx_id, osmo_hexdump(pdp_info->apn_enc, pdp_info->apn_enc_len)); |
| 357 | |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 358 | /* Set PDP info [ctx_id] */ |
| 359 | pdp_data = gprs_subscr_pdp_data_get_by_id(subscr, ctx_id); |
| 360 | if (!pdp_data) { |
| 361 | pdp_data = sgsn_subscriber_pdp_data_alloc(subscr->sgsn_data); |
| 362 | pdp_data->context_id = ctx_id; |
| 363 | } |
| 364 | |
| 365 | OSMO_ASSERT(pdp_data != NULL); |
| 366 | pdp_data->pdp_type = pdp_info->pdp_type; |
| 367 | gprs_apn_to_str(pdp_data->apn_str, |
| 368 | pdp_info->apn_enc, pdp_info->apn_enc_len); |
Holger Hans Peter Freyther | 8cedded | 2015-04-23 11:33:35 -0400 | [diff] [blame] | 369 | memcpy(pdp_data->qos_subscribed, pdp_info->qos_enc, pdp_info->qos_enc_len); |
| 370 | pdp_data->qos_subscribed_len = pdp_info->qos_enc_len; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 371 | } |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 372 | } |
| 373 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 374 | static int gprs_subscr_handle_gsup_upd_loc_res(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 375 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 376 | { |
Harald Welte | 5f2524f | 2016-05-05 18:25:12 +0200 | [diff] [blame] | 377 | /* contrary to MAP, we allow piggy-backing subscriber data onto |
| 378 | * the UPDATE LOCATION RESULT, and don't mandate the use of a |
| 379 | * separate nested INSERT SUBSCRIBER DATA transaction */ |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 380 | gprs_subscr_gsup_insert_data(subscr, gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 381 | |
| 382 | subscr->authorized = 1; |
Jacob Erlbeck | d6267d1 | 2015-01-19 11:10:04 +0100 | [diff] [blame] | 383 | subscr->sgsn_data->error_cause = SGSN_ERROR_CAUSE_NONE; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 384 | |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 385 | subscr->flags |= GPRS_SUBSCRIBER_ENABLE_PURGE; |
| 386 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 387 | gprs_subscr_update(subscr); |
| 388 | return 0; |
| 389 | } |
| 390 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 391 | static int gprs_subscr_handle_gsup_dsd_req(struct gprs_subscr *subscr, |
Max | a66d8cf | 2017-02-15 11:43:59 +0100 | [diff] [blame] | 392 | struct osmo_gsup_message *gsup_msg) |
| 393 | { |
| 394 | struct osmo_gsup_message gsup_reply = {0}; |
| 395 | |
| 396 | if (gsup_msg->cn_domain != OSMO_GSUP_CN_DOMAIN_PS) { |
| 397 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 398 | "Rx GSUP message %s not supported for CS\n", |
| 399 | osmo_gsup_message_type_name(gsup_msg->message_type)); |
| 400 | gsup_reply.cause = GMM_CAUSE_MSGT_NOTEXIST_NOTIMPL; |
| 401 | gsup_reply.message_type = OSMO_GSUP_MSGT_DELETE_DATA_ERROR; |
| 402 | } else { |
| 403 | gsm0408_gprs_access_cancelled(subscr->sgsn_data->mm, |
| 404 | GMM_CAUSE_GPRS_NOTALLOWED); |
| 405 | gsup_reply.message_type = OSMO_GSUP_MSGT_DELETE_DATA_RESULT; |
| 406 | } |
| 407 | |
| 408 | return gprs_subscr_tx_gsup_message(subscr, &gsup_reply); |
| 409 | } |
| 410 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 411 | static int gprs_subscr_handle_gsup_isd_req(struct gprs_subscr *subscr, |
Harald Welte | 5f2524f | 2016-05-05 18:25:12 +0200 | [diff] [blame] | 412 | struct osmo_gsup_message *gsup_msg) |
| 413 | { |
| 414 | struct osmo_gsup_message gsup_reply = {0}; |
| 415 | |
| 416 | gprs_subscr_gsup_insert_data(subscr, gsup_msg); |
| 417 | |
| 418 | subscr->authorized = 1; |
| 419 | subscr->sgsn_data->error_cause = SGSN_ERROR_CAUSE_NONE; |
| 420 | subscr->flags |= GPRS_SUBSCRIBER_ENABLE_PURGE; |
| 421 | gprs_subscr_update(subscr); |
| 422 | |
| 423 | gsup_reply.message_type = OSMO_GSUP_MSGT_INSERT_DATA_RESULT; |
| 424 | return gprs_subscr_tx_gsup_message(subscr, &gsup_reply); |
| 425 | } |
| 426 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 427 | static int check_cause(int cause) |
| 428 | { |
| 429 | switch (cause) { |
| 430 | case GMM_CAUSE_IMSI_UNKNOWN ... GMM_CAUSE_ILLEGAL_ME: |
| 431 | case GMM_CAUSE_GPRS_NOTALLOWED ... GMM_CAUSE_NO_GPRS_PLMN: |
| 432 | return EACCES; |
| 433 | |
| 434 | case GMM_CAUSE_MSC_TEMP_NOTREACH ... GMM_CAUSE_CONGESTION: |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 435 | return EHOSTUNREACH; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 436 | |
| 437 | case GMM_CAUSE_SEM_INCORR_MSG ... GMM_CAUSE_PROTO_ERR_UNSPEC: |
| 438 | default: |
| 439 | return EINVAL; |
| 440 | } |
| 441 | } |
| 442 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 443 | static int gprs_subscr_handle_gsup_auth_err(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 444 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 445 | { |
| 446 | unsigned idx; |
| 447 | struct sgsn_subscriber_data *sdata = subscr->sgsn_data; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 448 | int cause_err; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 449 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 450 | cause_err = check_cause(gsup_msg->cause); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 451 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 452 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 453 | "Send authentication info has failed with cause %d, " |
| 454 | "handled as: %s\n", |
| 455 | gsup_msg->cause, strerror(cause_err)); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 456 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 457 | switch (cause_err) { |
| 458 | case EACCES: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 459 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 460 | "GPRS send auth info req failed, access denied, " |
| 461 | "GMM cause = '%s' (%d)\n", |
| 462 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 463 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 464 | /* Clear auth tuples */ |
| 465 | memset(sdata->auth_triplets, 0, sizeof(sdata->auth_triplets)); |
| 466 | for (idx = 0; idx < ARRAY_SIZE(sdata->auth_triplets); idx++) |
| 467 | sdata->auth_triplets[idx].key_seq = GSM_KEY_SEQ_INVAL; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 468 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 469 | subscr->authorized = 0; |
| 470 | sdata->error_cause = gsup_msg->cause; |
| 471 | gprs_subscr_update_auth_info(subscr); |
| 472 | break; |
| 473 | |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 474 | case EHOSTUNREACH: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 475 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 476 | "GPRS send auth info req failed, GMM cause = '%s' (%d)\n", |
| 477 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 478 | gsup_msg->cause); |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 479 | |
| 480 | sdata->error_cause = gsup_msg->cause; |
| 481 | gprs_subscr_update_auth_info(subscr); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 482 | break; |
| 483 | |
| 484 | default: |
| 485 | case EINVAL: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 486 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 487 | "GSUP protocol remote error, GMM cause = '%s' (%d)\n", |
| 488 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 489 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 490 | break; |
| 491 | } |
| 492 | |
| 493 | return -gsup_msg->cause; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 494 | } |
| 495 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 496 | static int gprs_subscr_handle_gsup_upd_loc_err(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 497 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 498 | { |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 499 | int cause_err; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 500 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 501 | cause_err = check_cause(gsup_msg->cause); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 502 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 503 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 504 | "Update location has failed with cause %d, handled as: %s\n", |
| 505 | gsup_msg->cause, strerror(cause_err)); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 506 | |
| 507 | switch (cause_err) { |
| 508 | case EACCES: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 509 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 510 | "GPRS update location failed, access denied, " |
| 511 | "GMM cause = '%s' (%d)\n", |
| 512 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 513 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 514 | |
| 515 | subscr->authorized = 0; |
| 516 | subscr->sgsn_data->error_cause = gsup_msg->cause; |
| 517 | gprs_subscr_update_auth_info(subscr); |
| 518 | break; |
| 519 | |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 520 | case EHOSTUNREACH: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 521 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 522 | "GPRS update location failed, GMM cause = '%s' (%d)\n", |
| 523 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 524 | gsup_msg->cause); |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 525 | |
| 526 | subscr->sgsn_data->error_cause = gsup_msg->cause; |
| 527 | gprs_subscr_update_auth_info(subscr); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 528 | break; |
| 529 | |
| 530 | default: |
| 531 | case EINVAL: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 532 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 533 | "GSUP protocol remote error, GMM cause = '%s' (%d)\n", |
| 534 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 535 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 536 | break; |
| 537 | } |
| 538 | |
| 539 | return -gsup_msg->cause; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 540 | } |
| 541 | |
Jacob Erlbeck | 929acdf | 2015-01-27 13:47:24 +0100 | [diff] [blame] | 542 | static int gprs_subscr_handle_gsup_purge_no_subscr( |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 543 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 929acdf | 2015-01-27 13:47:24 +0100 | [diff] [blame] | 544 | { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 545 | if (OSMO_GSUP_IS_MSGT_ERROR(gsup_msg->message_type)) { |
Jacob Erlbeck | 929acdf | 2015-01-27 13:47:24 +0100 | [diff] [blame] | 546 | LOGGSUPP(LOGL_NOTICE, gsup_msg, |
| 547 | "Purge MS has failed with cause '%s' (%d)\n", |
| 548 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 549 | gsup_msg->cause); |
| 550 | return -gsup_msg->cause; |
| 551 | } |
| 552 | |
| 553 | LOGGSUPP(LOGL_INFO, gsup_msg, "Completing purge MS\n"); |
| 554 | return 0; |
| 555 | } |
| 556 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 557 | static int gprs_subscr_handle_gsup_purge_res(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 558 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 559 | { |
| 560 | LOGGSUBSCRP(LOGL_INFO, subscr, "Completing purge MS\n"); |
| 561 | |
| 562 | /* Force silent cancellation */ |
Jacob Erlbeck | d6267d1 | 2015-01-19 11:10:04 +0100 | [diff] [blame] | 563 | subscr->sgsn_data->error_cause = SGSN_ERROR_CAUSE_NONE; |
Jacob Erlbeck | 37139e5 | 2015-01-23 13:52:55 +0100 | [diff] [blame] | 564 | gprs_subscr_cancel(subscr); |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 565 | |
| 566 | return 0; |
| 567 | } |
| 568 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 569 | static int gprs_subscr_handle_gsup_purge_err(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 570 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 571 | { |
| 572 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 573 | "Purge MS has failed with cause '%s' (%d)\n", |
| 574 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 575 | gsup_msg->cause); |
| 576 | |
| 577 | /* In GSM 09.02, 19.1.4.4, the text and the SDL diagram imply that |
| 578 | * the subscriber data is not removed if the request has failed. On the |
| 579 | * other hand, keeping the subscriber data in either error case |
| 580 | * (subscriber unknown, syntactical message error, connection error) |
| 581 | * doesn't seem to give any advantage, since the data will be restored |
| 582 | * on the next Attach Request anyway. |
| 583 | * This approach ensures, that the subscriber record will not stick if |
| 584 | * an error happens. |
| 585 | */ |
| 586 | |
| 587 | /* TODO: Check whether this behaviour is acceptable and either just |
| 588 | * remove this TODO-notice or change the implementation to not delete |
| 589 | * the subscriber data (eventually resetting the ENABLE_PURGE flag and |
| 590 | * restarting the expiry timer based on the cause). |
| 591 | * |
| 592 | * Subscriber Unknown: cancel subscr |
| 593 | * Temporary network problems: do nothing (handled by timer based retry) |
| 594 | * Message problems (syntax, nyi, ...): cancel subscr (retry won't help) |
| 595 | */ |
| 596 | |
| 597 | gprs_subscr_handle_gsup_purge_res(subscr, gsup_msg); |
| 598 | |
| 599 | return -gsup_msg->cause; |
| 600 | } |
| 601 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 602 | static int gprs_subscr_handle_loc_cancel_req(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 603 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 87c7ffc | 2015-01-08 15:29:01 +0100 | [diff] [blame] | 604 | { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 605 | struct osmo_gsup_message gsup_reply = {0}; |
Jacob Erlbeck | 5b51205 | 2015-04-07 17:49:48 +0200 | [diff] [blame] | 606 | int is_update_procedure = !gsup_msg->cancel_type || |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 607 | gsup_msg->cancel_type == OSMO_GSUP_CANCEL_TYPE_UPDATE; |
Jacob Erlbeck | 87c7ffc | 2015-01-08 15:29:01 +0100 | [diff] [blame] | 608 | |
Jacob Erlbeck | 8000e0e | 2015-01-27 14:56:40 +0100 | [diff] [blame] | 609 | LOGGSUBSCRP(LOGL_INFO, subscr, "Cancelling MS subscriber (%s)\n", |
| 610 | is_update_procedure ? |
| 611 | "update procedure" : "subscription withdraw"); |
Jacob Erlbeck | 87c7ffc | 2015-01-08 15:29:01 +0100 | [diff] [blame] | 612 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 613 | gsup_reply.message_type = OSMO_GSUP_MSGT_LOCATION_CANCEL_RESULT; |
Jacob Erlbeck | 87c7ffc | 2015-01-08 15:29:01 +0100 | [diff] [blame] | 614 | gprs_subscr_tx_gsup_message(subscr, &gsup_reply); |
| 615 | |
Jacob Erlbeck | 8000e0e | 2015-01-27 14:56:40 +0100 | [diff] [blame] | 616 | if (is_update_procedure) |
| 617 | subscr->sgsn_data->error_cause = SGSN_ERROR_CAUSE_NONE; |
| 618 | else |
| 619 | /* Since a withdraw cause is not specified, just abort the |
| 620 | * current attachment. The following re-attachment should then |
| 621 | * be rejected with a proper cause value. |
| 622 | */ |
| 623 | subscr->sgsn_data->error_cause = GMM_CAUSE_IMPL_DETACHED; |
| 624 | |
Jacob Erlbeck | 37139e5 | 2015-01-23 13:52:55 +0100 | [diff] [blame] | 625 | gprs_subscr_cancel(subscr); |
Jacob Erlbeck | 87c7ffc | 2015-01-08 15:29:01 +0100 | [diff] [blame] | 626 | |
| 627 | return 0; |
| 628 | } |
| 629 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 630 | static int gprs_subscr_handle_unknown_imsi(struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 631 | { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 632 | if (OSMO_GSUP_IS_MSGT_REQUEST(gsup_msg->message_type)) { |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 633 | gprs_subscr_tx_gsup_error_reply(NULL, gsup_msg, |
| 634 | GMM_CAUSE_IMSI_UNKNOWN); |
| 635 | LOGP(DGPRS, LOGL_NOTICE, |
| 636 | "Unknown IMSI %s, discarding GSUP request " |
| 637 | "of type 0x%02x\n", |
| 638 | gsup_msg->imsi, gsup_msg->message_type); |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 639 | } else if (OSMO_GSUP_IS_MSGT_ERROR(gsup_msg->message_type)) { |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 640 | LOGP(DGPRS, LOGL_NOTICE, |
| 641 | "Unknown IMSI %s, discarding GSUP error " |
| 642 | "of type 0x%02x, cause '%s' (%d)\n", |
| 643 | gsup_msg->imsi, gsup_msg->message_type, |
| 644 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 645 | gsup_msg->cause); |
| 646 | } else { |
| 647 | LOGP(DGPRS, LOGL_NOTICE, |
| 648 | "Unknown IMSI %s, discarding GSUP response " |
| 649 | "of type 0x%02x\n", |
| 650 | gsup_msg->imsi, gsup_msg->message_type); |
| 651 | } |
| 652 | |
| 653 | return -GMM_CAUSE_IMSI_UNKNOWN; |
| 654 | } |
| 655 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 656 | int gprs_subscr_rx_gsup_message(struct msgb *msg) |
| 657 | { |
| 658 | uint8_t *data = msgb_l2(msg); |
| 659 | size_t data_len = msgb_l2len(msg); |
| 660 | int rc = 0; |
| 661 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 662 | struct osmo_gsup_message gsup_msg = {0}; |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 663 | struct gprs_subscr *subscr; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 664 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 665 | rc = osmo_gsup_decode(data, data_len, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 666 | if (rc < 0) { |
| 667 | LOGP(DGPRS, LOGL_ERROR, |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 668 | "decoding GSUP message fails with error '%s' (%d)\n", |
| 669 | get_value_string(gsm48_gmm_cause_names, -rc), -rc); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 670 | return rc; |
| 671 | } |
| 672 | |
Jacob Erlbeck | 07f6e36 | 2015-01-29 14:00:28 +0100 | [diff] [blame] | 673 | if (!gsup_msg.imsi[0]) { |
| 674 | LOGP(DGPRS, LOGL_ERROR, "Missing IMSI in GSUP message\n"); |
| 675 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 676 | if (OSMO_GSUP_IS_MSGT_REQUEST(gsup_msg.message_type)) |
Jacob Erlbeck | 07f6e36 | 2015-01-29 14:00:28 +0100 | [diff] [blame] | 677 | gprs_subscr_tx_gsup_error_reply(NULL, &gsup_msg, |
| 678 | GMM_CAUSE_INV_MAND_INFO); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 679 | return -GMM_CAUSE_INV_MAND_INFO; |
Jacob Erlbeck | 07f6e36 | 2015-01-29 14:00:28 +0100 | [diff] [blame] | 680 | } |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 681 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 682 | if (!gsup_msg.cause && OSMO_GSUP_IS_MSGT_ERROR(gsup_msg.message_type)) |
Jacob Erlbeck | 9ff8289 | 2015-01-29 14:17:51 +0100 | [diff] [blame] | 683 | gsup_msg.cause = GMM_CAUSE_NET_FAIL; |
| 684 | |
Jacob Erlbeck | 4dedb27 | 2015-01-15 17:50:16 +0100 | [diff] [blame] | 685 | subscr = gprs_subscr_get_by_imsi(gsup_msg.imsi); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 686 | |
Jacob Erlbeck | 929acdf | 2015-01-27 13:47:24 +0100 | [diff] [blame] | 687 | if (!subscr) { |
| 688 | switch (gsup_msg.message_type) { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 689 | case OSMO_GSUP_MSGT_PURGE_MS_RESULT: |
| 690 | case OSMO_GSUP_MSGT_PURGE_MS_ERROR: |
Jacob Erlbeck | 929acdf | 2015-01-27 13:47:24 +0100 | [diff] [blame] | 691 | return gprs_subscr_handle_gsup_purge_no_subscr(&gsup_msg); |
| 692 | default: |
| 693 | return gprs_subscr_handle_unknown_imsi(&gsup_msg); |
| 694 | } |
| 695 | } |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 696 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 697 | LOGGSUBSCRP(LOGL_INFO, subscr, |
Max | a66d8cf | 2017-02-15 11:43:59 +0100 | [diff] [blame] | 698 | "Received GSUP message %s\n", |
| 699 | osmo_gsup_message_type_name(gsup_msg.message_type)); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 700 | |
| 701 | switch (gsup_msg.message_type) { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 702 | case OSMO_GSUP_MSGT_LOCATION_CANCEL_REQUEST: |
Jacob Erlbeck | 87c7ffc | 2015-01-08 15:29:01 +0100 | [diff] [blame] | 703 | rc = gprs_subscr_handle_loc_cancel_req(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 704 | break; |
| 705 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 706 | case OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 707 | rc = gprs_subscr_handle_gsup_auth_res(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 708 | break; |
| 709 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 710 | case OSMO_GSUP_MSGT_SEND_AUTH_INFO_ERROR: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 711 | rc = gprs_subscr_handle_gsup_auth_err(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 712 | break; |
| 713 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 714 | case OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 715 | rc = gprs_subscr_handle_gsup_upd_loc_res(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 716 | break; |
| 717 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 718 | case OSMO_GSUP_MSGT_UPDATE_LOCATION_ERROR: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 719 | rc = gprs_subscr_handle_gsup_upd_loc_err(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 720 | break; |
| 721 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 722 | case OSMO_GSUP_MSGT_PURGE_MS_ERROR: |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 723 | rc = gprs_subscr_handle_gsup_purge_err(subscr, &gsup_msg); |
| 724 | break; |
| 725 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 726 | case OSMO_GSUP_MSGT_PURGE_MS_RESULT: |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 727 | rc = gprs_subscr_handle_gsup_purge_res(subscr, &gsup_msg); |
| 728 | break; |
| 729 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 730 | case OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: |
Harald Welte | 5f2524f | 2016-05-05 18:25:12 +0200 | [diff] [blame] | 731 | rc = gprs_subscr_handle_gsup_isd_req(subscr, &gsup_msg); |
| 732 | break; |
| 733 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 734 | case OSMO_GSUP_MSGT_DELETE_DATA_REQUEST: |
Max | a66d8cf | 2017-02-15 11:43:59 +0100 | [diff] [blame] | 735 | rc = gprs_subscr_handle_gsup_dsd_req(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 736 | break; |
| 737 | |
| 738 | default: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 739 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
Max | a66d8cf | 2017-02-15 11:43:59 +0100 | [diff] [blame] | 740 | "Rx GSUP message %s not valid at SGSN\n", |
| 741 | osmo_gsup_message_type_name(gsup_msg.message_type)); |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 742 | if (OSMO_GSUP_IS_MSGT_REQUEST(gsup_msg.message_type)) |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 743 | gprs_subscr_tx_gsup_error_reply( |
| 744 | subscr, &gsup_msg, GMM_CAUSE_MSGT_NOTEXIST_NOTIMPL); |
| 745 | rc = -GMM_CAUSE_MSGT_NOTEXIST_NOTIMPL; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 746 | break; |
| 747 | }; |
| 748 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 749 | gprs_subscr_put(subscr); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 750 | |
| 751 | return rc; |
| 752 | } |
| 753 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 754 | int gprs_subscr_purge(struct gprs_subscr *subscr) |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 755 | { |
Holger Hans Peter Freyther | 10c0f56 | 2015-05-17 20:58:40 +0200 | [diff] [blame] | 756 | struct sgsn_subscriber_data *sdata = subscr->sgsn_data; |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 757 | struct osmo_gsup_message gsup_msg = {0}; |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 758 | |
| 759 | LOGGSUBSCRP(LOGL_INFO, subscr, "purging MS subscriber\n"); |
| 760 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 761 | gsup_msg.message_type = OSMO_GSUP_MSGT_PURGE_MS_REQUEST; |
Holger Hans Peter Freyther | 10c0f56 | 2015-05-17 20:58:40 +0200 | [diff] [blame] | 762 | |
| 763 | /* Provide the HLR number in case it is known */ |
| 764 | gsup_msg.hlr_enc_len = sdata->hlr_len; |
| 765 | gsup_msg.hlr_enc = sdata->hlr; |
| 766 | |
Jacob Erlbeck | ca69b0f | 2015-02-03 19:45:46 +0100 | [diff] [blame] | 767 | return gprs_subscr_tx_gsup_message(subscr, &gsup_msg); |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 768 | } |
| 769 | |
Neels Hofmeyr | 058cd57 | 2017-02-24 06:24:45 +0100 | [diff] [blame] | 770 | static int gprs_subscr_query_auth_info(struct gprs_subscr *subscr, |
| 771 | const uint8_t *auts, |
| 772 | const uint8_t *auts_rand) |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 773 | { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 774 | struct osmo_gsup_message gsup_msg = {0}; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 775 | |
Neels Hofmeyr | 058cd57 | 2017-02-24 06:24:45 +0100 | [diff] [blame] | 776 | /* Make sure we have a complete resync or clearly no resync. */ |
| 777 | OSMO_ASSERT((auts != NULL) == (auts_rand != NULL)); |
| 778 | |
| 779 | LOGGSUBSCRP(LOGL_INFO, subscr, "requesting auth info%s\n", |
| 780 | auts ? " with AUTS (UMTS Resynch)" : ""); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 781 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 782 | gsup_msg.message_type = OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST; |
Neels Hofmeyr | 058cd57 | 2017-02-24 06:24:45 +0100 | [diff] [blame] | 783 | gsup_msg.auts = auts; |
| 784 | gsup_msg.rand = auts_rand; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 785 | return gprs_subscr_tx_gsup_message(subscr, &gsup_msg); |
| 786 | } |
| 787 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 788 | int gprs_subscr_location_update(struct gprs_subscr *subscr) |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 789 | { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 790 | struct osmo_gsup_message gsup_msg = {0}; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 791 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 792 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 793 | "subscriber data is not available\n"); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 794 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 795 | gsup_msg.message_type = OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 796 | return gprs_subscr_tx_gsup_message(subscr, &gsup_msg); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 797 | } |
| 798 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 799 | void gprs_subscr_update(struct gprs_subscr *subscr) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 800 | { |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 801 | LOGGSUBSCRP(LOGL_DEBUG, subscr, "Updating subscriber data\n"); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 802 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 803 | subscr->flags &= ~GPRS_SUBSCRIBER_UPDATE_LOCATION_PENDING; |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 804 | subscr->flags &= ~GPRS_SUBSCRIBER_FIRST_CONTACT; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 805 | |
Jacob Erlbeck | 555b2e5 | 2015-01-26 13:52:42 +0100 | [diff] [blame] | 806 | if (subscr->sgsn_data->mm) |
| 807 | sgsn_update_subscriber_data(subscr->sgsn_data->mm); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 808 | } |
| 809 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 810 | void gprs_subscr_update_auth_info(struct gprs_subscr *subscr) |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 811 | { |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 812 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 813 | "Updating subscriber authentication info\n"); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 814 | |
| 815 | subscr->flags &= ~GPRS_SUBSCRIBER_UPDATE_AUTH_INFO_PENDING; |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 816 | subscr->flags &= ~GPRS_SUBSCRIBER_FIRST_CONTACT; |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 817 | |
Jacob Erlbeck | 555b2e5 | 2015-01-26 13:52:42 +0100 | [diff] [blame] | 818 | if (subscr->sgsn_data->mm) |
| 819 | sgsn_update_subscriber_data(subscr->sgsn_data->mm); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 820 | } |
| 821 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 822 | struct gprs_subscr *gprs_subscr_get_or_create_by_mmctx(struct sgsn_mm_ctx *mmctx) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 823 | { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 824 | struct gprs_subscr *subscr = NULL; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 825 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 826 | if (mmctx->subscr) |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 827 | return gprs_subscr_get(mmctx->subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 828 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 829 | if (mmctx->imsi[0]) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 830 | subscr = gprs_subscr_get_by_imsi(mmctx->imsi); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 831 | |
| 832 | if (!subscr) { |
| 833 | subscr = gprs_subscr_get_or_create(mmctx->imsi); |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 834 | subscr->flags |= GPRS_SUBSCRIBER_FIRST_CONTACT; |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 835 | subscr->flags &= ~GPRS_SUBSCRIBER_ENABLE_PURGE; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 836 | } |
| 837 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 838 | osmo_strlcpy(subscr->imei, mmctx->imei, sizeof(subscr->imei)); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 839 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 840 | if (subscr->lac != mmctx->ra.lac) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 841 | subscr->lac = mmctx->ra.lac; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 842 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 843 | subscr->sgsn_data->mm = mmctx; |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 844 | mmctx->subscr = gprs_subscr_get(subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 845 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 846 | return subscr; |
| 847 | } |
| 848 | |
| 849 | int gprs_subscr_request_update_location(struct sgsn_mm_ctx *mmctx) |
| 850 | { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 851 | struct gprs_subscr *subscr = NULL; |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 852 | int rc; |
| 853 | |
| 854 | LOGMMCTXP(LOGL_DEBUG, mmctx, "Requesting subscriber data update\n"); |
| 855 | |
| 856 | subscr = gprs_subscr_get_or_create_by_mmctx(mmctx); |
| 857 | |
| 858 | subscr->flags |= GPRS_SUBSCRIBER_UPDATE_LOCATION_PENDING; |
| 859 | |
| 860 | rc = gprs_subscr_location_update(subscr); |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 861 | gprs_subscr_put(subscr); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 862 | return rc; |
| 863 | } |
| 864 | |
Neels Hofmeyr | 058cd57 | 2017-02-24 06:24:45 +0100 | [diff] [blame] | 865 | /*! \brief Send Update Auth Info request via GSUP, with or without resync. |
| 866 | * \param[in] mmctx MM context to request authentication tuples for. |
| 867 | * \param[in] auts 14 octet AUTS token for UMTS resync, or NULL. |
| 868 | * \param[in] auts_rand 16 octet Random token for UMTS resync, or NULL. |
| 869 | * In case of normal Authentication Info request, both \a auts and \a auts_rand |
| 870 | * must be NULL. For resync, both must be non-NULL. |
| 871 | */ |
| 872 | int gprs_subscr_request_auth_info(struct sgsn_mm_ctx *mmctx, |
| 873 | const uint8_t *auts, |
| 874 | const uint8_t *auts_rand) |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 875 | { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 876 | struct gprs_subscr *subscr = NULL; |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 877 | int rc; |
| 878 | |
| 879 | LOGMMCTXP(LOGL_DEBUG, mmctx, "Requesting subscriber authentication info\n"); |
| 880 | |
| 881 | subscr = gprs_subscr_get_or_create_by_mmctx(mmctx); |
| 882 | |
| 883 | subscr->flags |= GPRS_SUBSCRIBER_UPDATE_AUTH_INFO_PENDING; |
| 884 | |
Neels Hofmeyr | 058cd57 | 2017-02-24 06:24:45 +0100 | [diff] [blame] | 885 | rc = gprs_subscr_query_auth_info(subscr, auts, auts_rand); |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 886 | gprs_subscr_put(subscr); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 887 | return rc; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 888 | } |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 889 | |
| 890 | static void gprs_subscr_free(struct gprs_subscr *gsub) |
| 891 | { |
| 892 | llist_del(&gsub->entry); |
| 893 | talloc_free(gsub); |
| 894 | } |
| 895 | |
| 896 | struct gprs_subscr *_gprs_subscr_get(struct gprs_subscr *gsub, |
| 897 | const char *file, int line) |
| 898 | { |
| 899 | OSMO_ASSERT(gsub->use_count < INT_MAX); |
| 900 | gsub->use_count++; |
| 901 | LOGPSRC(DREF, LOGL_DEBUG, file, line, |
| 902 | "subscr %s usage increases to: %d\n", |
| 903 | gsub->imsi, gsub->use_count); |
| 904 | return gsub; |
| 905 | } |
| 906 | |
| 907 | struct gprs_subscr *_gprs_subscr_put(struct gprs_subscr *gsub, |
| 908 | const char *file, int line) |
| 909 | { |
| 910 | gsub->use_count--; |
| 911 | LOGPSRC(DREF, gsub->use_count >= 0? LOGL_DEBUG : LOGL_ERROR, |
| 912 | file, line, |
| 913 | "subscr %s usage decreases to: %d%s\n", |
| 914 | gsub->imsi, gsub->use_count, |
| 915 | gsub->keep_in_ram? ", keep-in-ram flag is set" : ""); |
| 916 | if (gsub->use_count > 0) |
| 917 | return gsub; |
| 918 | if (gsub->keep_in_ram) |
| 919 | return gsub; |
| 920 | gprs_subscr_free(gsub); |
| 921 | return NULL; |
| 922 | } |