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> |
Harald Welte | 7e82b74 | 2017-08-12 13:43:54 +0200 | [diff] [blame] | 25 | #include <osmocom/gsm/apn.h> |
Stefan Sperling | 8822009 | 2018-12-11 14:42:00 +0100 | [diff] [blame] | 26 | #include <osmocom/gsm/ipa.h> |
Neels Hofmeyr | 93bafb6 | 2017-01-13 03:12:08 +0100 | [diff] [blame] | 27 | #include <osmocom/core/utils.h> |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 28 | #include <osmocom/core/logging.h> |
Neels Hofmeyr | 396f2e6 | 2017-09-04 15:13:25 +0200 | [diff] [blame] | 29 | #include <osmocom/sgsn/gprs_subscriber.h> |
Harald Welte | f4b2c4c | 2018-09-16 07:53:41 +0200 | [diff] [blame] | 30 | #include <osmocom/gsupclient/gsup_client.h> |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 31 | |
Neels Hofmeyr | 396f2e6 | 2017-09-04 15:13:25 +0200 | [diff] [blame] | 32 | #include <osmocom/sgsn/sgsn.h> |
| 33 | #include <osmocom/sgsn/gprs_sgsn.h> |
| 34 | #include <osmocom/sgsn/gprs_gmm.h> |
| 35 | #include <osmocom/sgsn/gprs_utils.h> |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 36 | |
Neels Hofmeyr | 396f2e6 | 2017-09-04 15:13:25 +0200 | [diff] [blame] | 37 | #include <osmocom/sgsn/debug.h> |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 38 | |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 39 | #include <netinet/in.h> |
| 40 | #include <arpa/inet.h> |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 41 | #include <limits.h> |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 42 | |
Jacob Erlbeck | 743dec4 | 2015-01-08 15:18:39 +0100 | [diff] [blame] | 43 | #define SGSN_SUBSCR_MAX_RETRIES 3 |
| 44 | #define SGSN_SUBSCR_RETRY_INTERVAL 10 |
| 45 | |
Jacob Erlbeck | 929acdf | 2015-01-27 13:47:24 +0100 | [diff] [blame] | 46 | #define LOGGSUPP(level, gsup, fmt, args...) \ |
| 47 | LOGP(DGPRS, level, "GSUP(%s) " fmt, \ |
| 48 | (gsup)->imsi, \ |
| 49 | ## args) |
| 50 | |
Pau Espin Pedrol | b1d1c24 | 2018-10-30 17:27:59 +0100 | [diff] [blame] | 51 | extern void *tall_sgsn_ctx; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 52 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 53 | LLIST_HEAD(_gprs_subscribers); |
| 54 | struct llist_head * const gprs_subscribers = &_gprs_subscribers; |
| 55 | |
Harald Welte | f4b2c4c | 2018-09-16 07:53:41 +0200 | [diff] [blame] | 56 | static int gsup_read_cb(struct osmo_gsup_client *gsupc, struct msgb *msg); |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 57 | |
| 58 | /* TODO: Some functions are specific to the SGSN, but this file is more general |
| 59 | * (it has gprs_* name). Either move these functions elsewhere, split them and |
| 60 | * move a part, or replace the gprs_ prefix by sgsn_. The applies to |
| 61 | * gprs_subscr_init, gsup_read_cb, and gprs_subscr_tx_gsup_message. |
| 62 | */ |
| 63 | |
| 64 | int gprs_subscr_init(struct sgsn_instance *sgi) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 65 | { |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 66 | const char *addr_str; |
Stefan Sperling | 8822009 | 2018-12-11 14:42:00 +0100 | [diff] [blame] | 67 | struct ipaccess_unit *ipa_dev; |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 68 | |
| 69 | if (!sgi->cfg.gsup_server_addr.sin_addr.s_addr) |
| 70 | return 0; |
| 71 | |
| 72 | addr_str = inet_ntoa(sgi->cfg.gsup_server_addr.sin_addr); |
| 73 | |
Stefan Sperling | 8822009 | 2018-12-11 14:42:00 +0100 | [diff] [blame] | 74 | ipa_dev = talloc_zero(sgi, struct ipaccess_unit); |
| 75 | ipa_dev->unit_name = "SGSN"; |
| 76 | ipa_dev->serno = sgi->cfg.sgsn_ipa_name; /* NULL unless configured via VTY */ |
| 77 | |
| 78 | sgi->gsup_client = osmo_gsup_client_create2( |
Harald Welte | f4b2c4c | 2018-09-16 07:53:41 +0200 | [diff] [blame] | 79 | sgi, |
Stefan Sperling | 8822009 | 2018-12-11 14:42:00 +0100 | [diff] [blame] | 80 | ipa_dev, |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 81 | addr_str, sgi->cfg.gsup_server_port, |
Neels Hofmeyr | 9c534fd | 2015-10-12 11:57:37 +0200 | [diff] [blame] | 82 | &gsup_read_cb, |
| 83 | &sgi->cfg.oap); |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 84 | |
| 85 | if (!sgi->gsup_client) |
| 86 | return -1; |
| 87 | |
| 88 | return 1; |
| 89 | } |
| 90 | |
Harald Welte | f4b2c4c | 2018-09-16 07:53:41 +0200 | [diff] [blame] | 91 | static int gsup_read_cb(struct osmo_gsup_client *gsupc, struct msgb *msg) |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 92 | { |
| 93 | int rc; |
| 94 | |
| 95 | rc = gprs_subscr_rx_gsup_message(msg); |
Jacob Erlbeck | e154d8b | 2014-12-19 19:15:55 +0100 | [diff] [blame] | 96 | msgb_free(msg); |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 97 | if (rc < 0) |
| 98 | return -1; |
| 99 | |
| 100 | return rc; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 101 | } |
| 102 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 103 | int gprs_subscr_purge(struct gprs_subscr *subscr); |
Jacob Erlbeck | 0f47b8f | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 104 | |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 105 | static struct sgsn_subscriber_data *sgsn_subscriber_data_alloc(void *ctx) |
| 106 | { |
| 107 | struct sgsn_subscriber_data *sdata; |
Jacob Erlbeck | 7921ab1 | 2014-12-08 15:52:00 +0100 | [diff] [blame] | 108 | int idx; |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 109 | |
| 110 | sdata = talloc_zero(ctx, struct sgsn_subscriber_data); |
| 111 | |
Jacob Erlbeck | d6267d1 | 2015-01-19 11:10:04 +0100 | [diff] [blame] | 112 | sdata->error_cause = SGSN_ERROR_CAUSE_NONE; |
| 113 | |
Jacob Erlbeck | 7921ab1 | 2014-12-08 15:52:00 +0100 | [diff] [blame] | 114 | for (idx = 0; idx < ARRAY_SIZE(sdata->auth_triplets); idx++) |
| 115 | sdata->auth_triplets[idx].key_seq = GSM_KEY_SEQ_INVAL; |
| 116 | |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 117 | INIT_LLIST_HEAD(&sdata->pdp_list); |
| 118 | |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 119 | return sdata; |
| 120 | } |
| 121 | |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 122 | struct sgsn_subscriber_pdp_data* sgsn_subscriber_pdp_data_alloc( |
| 123 | struct sgsn_subscriber_data *sdata) |
| 124 | { |
| 125 | struct sgsn_subscriber_pdp_data* pdata; |
| 126 | |
| 127 | pdata = talloc_zero(sdata, struct sgsn_subscriber_pdp_data); |
| 128 | |
| 129 | llist_add_tail(&pdata->list, &sdata->pdp_list); |
| 130 | |
| 131 | return pdata; |
| 132 | } |
| 133 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 134 | struct gprs_subscr *gprs_subscr_get_by_imsi(const char *imsi) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 135 | { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 136 | struct gprs_subscr *gsub; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 137 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 138 | if (!imsi || !*imsi) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 139 | return NULL; |
| 140 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 141 | llist_for_each_entry(gsub, gprs_subscribers, entry) { |
| 142 | if (!strcmp(gsub->imsi, imsi)) |
| 143 | return gprs_subscr_get(gsub); |
| 144 | } |
| 145 | return NULL; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 146 | } |
| 147 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 148 | static struct gprs_subscr *gprs_subscr_alloc(void) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 149 | { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 150 | struct gprs_subscr *gsub; |
Pau Espin Pedrol | b1d1c24 | 2018-10-30 17:27:59 +0100 | [diff] [blame] | 151 | gsub = talloc_zero(tall_sgsn_ctx, struct gprs_subscr); |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 152 | if (!gsub) |
| 153 | return NULL; |
| 154 | llist_add_tail(&gsub->entry, gprs_subscribers); |
| 155 | gsub->use_count = 1; |
| 156 | gsub->tmsi = GSM_RESERVED_TMSI; |
| 157 | return gsub; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 158 | } |
| 159 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 160 | struct gprs_subscr *gprs_subscr_get_or_create(const char *imsi) |
| 161 | { |
| 162 | struct gprs_subscr *gsub; |
| 163 | |
| 164 | gsub = gprs_subscr_get_by_imsi(imsi); |
| 165 | if (!gsub) { |
| 166 | gsub = gprs_subscr_alloc(); |
| 167 | if (!gsub) |
| 168 | return NULL; |
Neels Hofmeyr | ca06e04 | 2017-03-08 18:30:22 +0100 | [diff] [blame] | 169 | osmo_strlcpy(gsub->imsi, imsi, sizeof(gsub->imsi)); |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 170 | } |
| 171 | |
| 172 | if (!gsub->sgsn_data) |
| 173 | gsub->sgsn_data = sgsn_subscriber_data_alloc(gsub); |
| 174 | return gsub; |
| 175 | } |
| 176 | |
| 177 | void gprs_subscr_cleanup(struct gprs_subscr *subscr) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 178 | { |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 179 | if (subscr->sgsn_data->mm) { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 180 | gprs_subscr_put(subscr->sgsn_data->mm->subscr); |
Jacob Erlbeck | a1e0373 | 2014-12-02 11:28:38 +0100 | [diff] [blame] | 181 | subscr->sgsn_data->mm->subscr = NULL; |
| 182 | subscr->sgsn_data->mm = NULL; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 183 | } |
| 184 | |
Holger Hans Peter Freyther | 1d778fd | 2015-01-20 21:14:03 +0100 | [diff] [blame] | 185 | if (subscr->flags & GPRS_SUBSCRIBER_ENABLE_PURGE) { |
| 186 | gprs_subscr_purge(subscr); |
| 187 | subscr->flags &= ~GPRS_SUBSCRIBER_ENABLE_PURGE; |
Jacob Erlbeck | 0f47b8f | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 188 | } |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 189 | } |
| 190 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 191 | void gprs_subscr_cancel(struct gprs_subscr *subscr) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 192 | { |
| 193 | subscr->authorized = 0; |
| 194 | subscr->flags |= GPRS_SUBSCRIBER_CANCELLED; |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 195 | subscr->flags &= ~GPRS_SUBSCRIBER_ENABLE_PURGE; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 196 | |
| 197 | gprs_subscr_update(subscr); |
Jacob Erlbeck | 3e4e58f | 2015-01-26 11:07:24 +0100 | [diff] [blame] | 198 | gprs_subscr_cleanup(subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 199 | } |
| 200 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 201 | static int gprs_subscr_tx_gsup_message(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 202 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 203 | { |
Harald Welte | f4b2c4c | 2018-09-16 07:53:41 +0200 | [diff] [blame] | 204 | struct msgb *msg = osmo_gsup_client_msgb_alloc(); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 205 | |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 206 | if (strlen(gsup_msg->imsi) == 0 && subscr) |
Neels Hofmeyr | 93bafb6 | 2017-01-13 03:12:08 +0100 | [diff] [blame] | 207 | osmo_strlcpy(gsup_msg->imsi, subscr->imsi, |
| 208 | sizeof(gsup_msg->imsi)); |
Max | 896c6f8 | 2016-07-01 15:24:44 +0200 | [diff] [blame] | 209 | gsup_msg->cn_domain = OSMO_GSUP_CN_DOMAIN_PS; |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 210 | osmo_gsup_encode(msg, gsup_msg); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 211 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 212 | LOGGSUBSCRP(LOGL_INFO, subscr, |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 213 | "Sending GSUP, will send: %s\n", msgb_hexdump(msg)); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 214 | |
Jacob Erlbeck | 39f040d | 2014-12-18 12:46:47 +0100 | [diff] [blame] | 215 | if (!sgsn->gsup_client) { |
| 216 | msgb_free(msg); |
| 217 | return -ENOTSUP; |
| 218 | } |
| 219 | |
Harald Welte | f4b2c4c | 2018-09-16 07:53:41 +0200 | [diff] [blame] | 220 | return osmo_gsup_client_send(sgsn->gsup_client, msg); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 221 | } |
| 222 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 223 | static int gprs_subscr_tx_gsup_error_reply(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 224 | struct osmo_gsup_message *gsup_orig, |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 225 | enum gsm48_gmm_cause cause) |
| 226 | { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 227 | struct osmo_gsup_message gsup_reply = {0}; |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 228 | |
Neels Hofmeyr | 93bafb6 | 2017-01-13 03:12:08 +0100 | [diff] [blame] | 229 | osmo_strlcpy(gsup_reply.imsi, gsup_orig->imsi, |
| 230 | sizeof(gsup_reply.imsi)); |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 231 | gsup_reply.cause = cause; |
| 232 | gsup_reply.message_type = |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 233 | OSMO_GSUP_TO_MSGT_ERROR(gsup_orig->message_type); |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 234 | |
| 235 | return gprs_subscr_tx_gsup_message(subscr, &gsup_reply); |
| 236 | } |
| 237 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 238 | static int gprs_subscr_handle_gsup_auth_res(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 239 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 240 | { |
| 241 | unsigned idx; |
| 242 | struct sgsn_subscriber_data *sdata = subscr->sgsn_data; |
| 243 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 244 | LOGGSUBSCRP(LOGL_INFO, subscr, |
Harald Welte | 121e9a4 | 2016-04-20 13:13:19 +0200 | [diff] [blame] | 245 | "Got SendAuthenticationInfoResult, num_auth_vectors = %zu\n", |
| 246 | gsup_msg->num_auth_vectors); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 247 | |
Harald Welte | 121e9a4 | 2016-04-20 13:13:19 +0200 | [diff] [blame] | 248 | if (gsup_msg->num_auth_vectors > 0) { |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 249 | memset(sdata->auth_triplets, 0, sizeof(sdata->auth_triplets)); |
| 250 | |
| 251 | for (idx = 0; idx < ARRAY_SIZE(sdata->auth_triplets); idx++) |
| 252 | sdata->auth_triplets[idx].key_seq = GSM_KEY_SEQ_INVAL; |
| 253 | } |
| 254 | |
Harald Welte | 121e9a4 | 2016-04-20 13:13:19 +0200 | [diff] [blame] | 255 | for (idx = 0; idx < gsup_msg->num_auth_vectors; idx++) { |
| 256 | size_t key_seq = idx; |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 257 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
Holger Hans Peter Freyther | 8e6ecc9 | 2015-04-23 11:55:23 -0400 | [diff] [blame] | 258 | "Adding auth tuple, cksn = %zu\n", key_seq); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 259 | if (key_seq >= ARRAY_SIZE(sdata->auth_triplets)) { |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 260 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
Holger Hans Peter Freyther | 8e6ecc9 | 2015-04-23 11:55:23 -0400 | [diff] [blame] | 261 | "Skipping auth triplet with invalid cksn %zu\n", |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 262 | key_seq); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 263 | continue; |
| 264 | } |
Harald Welte | 121e9a4 | 2016-04-20 13:13:19 +0200 | [diff] [blame] | 265 | sdata->auth_triplets[key_seq].vec = gsup_msg->auth_vectors[idx]; |
| 266 | sdata->auth_triplets[key_seq].key_seq = key_seq; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 267 | } |
| 268 | |
| 269 | sdata->auth_triplets_updated = 1; |
Jacob Erlbeck | d6267d1 | 2015-01-19 11:10:04 +0100 | [diff] [blame] | 270 | sdata->error_cause = SGSN_ERROR_CAUSE_NONE; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 271 | |
| 272 | gprs_subscr_update_auth_info(subscr); |
| 273 | |
| 274 | return 0; |
| 275 | } |
| 276 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 277 | static int gprs_subscr_pdp_data_clear(struct gprs_subscr *subscr) |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 278 | { |
| 279 | struct sgsn_subscriber_pdp_data *pdp, *pdp2; |
| 280 | int count = 0; |
| 281 | |
| 282 | llist_for_each_entry_safe(pdp, pdp2, &subscr->sgsn_data->pdp_list, list) { |
| 283 | llist_del(&pdp->list); |
| 284 | talloc_free(pdp); |
| 285 | count += 1; |
| 286 | } |
| 287 | |
| 288 | return count; |
| 289 | } |
| 290 | |
| 291 | 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] | 292 | struct gprs_subscr *subscr, unsigned context_id) |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 293 | { |
| 294 | struct sgsn_subscriber_pdp_data *pdp; |
| 295 | |
| 296 | llist_for_each_entry(pdp, &subscr->sgsn_data->pdp_list, list) { |
| 297 | if (pdp->context_id == context_id) |
| 298 | return pdp; |
| 299 | } |
| 300 | |
| 301 | return NULL; |
| 302 | } |
| 303 | |
| 304 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 305 | static void gprs_subscr_gsup_insert_data(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 306 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 307 | { |
Holger Hans Peter Freyther | 9ba273d | 2015-04-23 09:53:53 -0400 | [diff] [blame] | 308 | struct sgsn_subscriber_data *sdata = subscr->sgsn_data; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 309 | unsigned idx; |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 310 | int rc; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 311 | |
Holger Hans Peter Freyther | 9ba273d | 2015-04-23 09:53:53 -0400 | [diff] [blame] | 312 | if (gsup_msg->msisdn_enc) { |
| 313 | if (gsup_msg->msisdn_enc_len > sizeof(sdata->msisdn)) { |
| 314 | LOGP(DGPRS, LOGL_ERROR, "MSISDN too long (%zu)\n", |
| 315 | gsup_msg->msisdn_enc_len); |
| 316 | sdata->msisdn_len = 0; |
| 317 | } else { |
| 318 | memcpy(sdata->msisdn, gsup_msg->msisdn_enc, |
| 319 | gsup_msg->msisdn_enc_len); |
| 320 | sdata->msisdn_len = gsup_msg->msisdn_enc_len; |
| 321 | } |
| 322 | } |
| 323 | |
Holger Hans Peter Freyther | 10c0f56 | 2015-05-17 20:58:40 +0200 | [diff] [blame] | 324 | if (gsup_msg->hlr_enc) { |
| 325 | if (gsup_msg->hlr_enc_len > sizeof(sdata->hlr)) { |
| 326 | LOGP(DGPRS, LOGL_ERROR, "HLR-Number too long (%zu)\n", |
| 327 | gsup_msg->hlr_enc_len); |
| 328 | sdata->hlr_len = 0; |
| 329 | } else { |
| 330 | memcpy(sdata->hlr, gsup_msg->hlr_enc, |
| 331 | gsup_msg->hlr_enc_len); |
| 332 | sdata->hlr_len = gsup_msg->hlr_enc_len; |
| 333 | } |
| 334 | } |
| 335 | |
Holger Hans Peter Freyther | 5db6857 | 2017-07-09 13:18:17 +0200 | [diff] [blame] | 336 | if (gsup_msg->pdp_charg_enc && gsup_msg->pdp_charg_enc_len >= sizeof(sdata->pdp_charg)) { |
| 337 | memcpy(&sdata->pdp_charg, gsup_msg->pdp_charg_enc, sizeof(sdata->pdp_charg)); |
| 338 | sdata->has_pdp_charg = 1; |
| 339 | } else { |
| 340 | sdata->has_pdp_charg = 0; |
| 341 | } |
| 342 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 343 | if (gsup_msg->pdp_info_compl) { |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 344 | rc = gprs_subscr_pdp_data_clear(subscr); |
| 345 | if (rc > 0) |
| 346 | LOGP(DGPRS, LOGL_INFO, "Cleared existing PDP info\n"); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | for (idx = 0; idx < gsup_msg->num_pdp_infos; idx++) { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 350 | struct osmo_gsup_pdp_info *pdp_info = &gsup_msg->pdp_infos[idx]; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 351 | size_t ctx_id = pdp_info->context_id; |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 352 | struct sgsn_subscriber_pdp_data *pdp_data; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 353 | |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 354 | if (pdp_info->apn_enc_len >= sizeof(pdp_data->apn_str)-1) { |
| 355 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
Holger Hans Peter Freyther | 8e6ecc9 | 2015-04-23 11:55:23 -0400 | [diff] [blame] | 356 | "APN too long, context id = %zu, APN = %s\n", |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 357 | ctx_id, osmo_hexdump(pdp_info->apn_enc, |
| 358 | pdp_info->apn_enc_len)); |
| 359 | continue; |
| 360 | } |
| 361 | |
Holger Hans Peter Freyther | 8cedded | 2015-04-23 11:33:35 -0400 | [diff] [blame] | 362 | if (pdp_info->qos_enc_len > sizeof(pdp_data->qos_subscribed)) { |
| 363 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 364 | "QoS info too long (%zu)\n", |
| 365 | pdp_info->qos_enc_len); |
| 366 | continue; |
| 367 | } |
| 368 | |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 369 | LOGGSUBSCRP(LOGL_INFO, subscr, |
Holger Hans Peter Freyther | 8e6ecc9 | 2015-04-23 11:55:23 -0400 | [diff] [blame] | 370 | "Will set PDP info, context id = %zu, APN = %s\n", |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 371 | ctx_id, osmo_hexdump(pdp_info->apn_enc, pdp_info->apn_enc_len)); |
| 372 | |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 373 | /* Set PDP info [ctx_id] */ |
| 374 | pdp_data = gprs_subscr_pdp_data_get_by_id(subscr, ctx_id); |
| 375 | if (!pdp_data) { |
| 376 | pdp_data = sgsn_subscriber_pdp_data_alloc(subscr->sgsn_data); |
| 377 | pdp_data->context_id = ctx_id; |
| 378 | } |
| 379 | |
| 380 | OSMO_ASSERT(pdp_data != NULL); |
| 381 | pdp_data->pdp_type = pdp_info->pdp_type; |
Harald Welte | 7e82b74 | 2017-08-12 13:43:54 +0200 | [diff] [blame] | 382 | osmo_apn_to_str(pdp_data->apn_str, |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 383 | pdp_info->apn_enc, pdp_info->apn_enc_len); |
Pau Espin Pedrol | faeea34 | 2018-07-17 18:08:54 +0200 | [diff] [blame] | 384 | |
| 385 | if (pdp_info->qos_enc) { |
| 386 | memcpy(&pdp_data->qos_subscribed[0], pdp_info->qos_enc, |
| 387 | pdp_info->qos_enc_len); |
| 388 | } |
Holger Hans Peter Freyther | 8cedded | 2015-04-23 11:33:35 -0400 | [diff] [blame] | 389 | pdp_data->qos_subscribed_len = pdp_info->qos_enc_len; |
Holger Hans Peter Freyther | 5db6857 | 2017-07-09 13:18:17 +0200 | [diff] [blame] | 390 | |
| 391 | if (pdp_info->pdp_charg_enc && pdp_info->pdp_charg_enc_len >= sizeof(pdp_data->pdp_charg)) { |
| 392 | memcpy(&pdp_data->pdp_charg, pdp_info->pdp_charg_enc, sizeof(pdp_data->pdp_charg)); |
| 393 | pdp_data->has_pdp_charg = 1; |
| 394 | } else { |
| 395 | pdp_data->has_pdp_charg = 0; |
| 396 | } |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 397 | } |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 398 | } |
| 399 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 400 | 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] | 401 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 402 | { |
Harald Welte | 5f2524f | 2016-05-05 18:25:12 +0200 | [diff] [blame] | 403 | /* contrary to MAP, we allow piggy-backing subscriber data onto |
| 404 | * the UPDATE LOCATION RESULT, and don't mandate the use of a |
| 405 | * separate nested INSERT SUBSCRIBER DATA transaction */ |
Jacob Erlbeck | 0e8add6 | 2014-12-17 14:03:35 +0100 | [diff] [blame] | 406 | gprs_subscr_gsup_insert_data(subscr, gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 407 | |
| 408 | subscr->authorized = 1; |
Jacob Erlbeck | d6267d1 | 2015-01-19 11:10:04 +0100 | [diff] [blame] | 409 | subscr->sgsn_data->error_cause = SGSN_ERROR_CAUSE_NONE; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 410 | |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 411 | subscr->flags |= GPRS_SUBSCRIBER_ENABLE_PURGE; |
| 412 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 413 | gprs_subscr_update(subscr); |
| 414 | return 0; |
| 415 | } |
| 416 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 417 | static int gprs_subscr_handle_gsup_dsd_req(struct gprs_subscr *subscr, |
Max | a66d8cf | 2017-02-15 11:43:59 +0100 | [diff] [blame] | 418 | struct osmo_gsup_message *gsup_msg) |
| 419 | { |
| 420 | struct osmo_gsup_message gsup_reply = {0}; |
| 421 | |
| 422 | if (gsup_msg->cn_domain != OSMO_GSUP_CN_DOMAIN_PS) { |
| 423 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 424 | "Rx GSUP message %s not supported for CS\n", |
| 425 | osmo_gsup_message_type_name(gsup_msg->message_type)); |
| 426 | gsup_reply.cause = GMM_CAUSE_MSGT_NOTEXIST_NOTIMPL; |
| 427 | gsup_reply.message_type = OSMO_GSUP_MSGT_DELETE_DATA_ERROR; |
| 428 | } else { |
| 429 | gsm0408_gprs_access_cancelled(subscr->sgsn_data->mm, |
| 430 | GMM_CAUSE_GPRS_NOTALLOWED); |
| 431 | gsup_reply.message_type = OSMO_GSUP_MSGT_DELETE_DATA_RESULT; |
| 432 | } |
| 433 | |
| 434 | return gprs_subscr_tx_gsup_message(subscr, &gsup_reply); |
| 435 | } |
| 436 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 437 | static int gprs_subscr_handle_gsup_isd_req(struct gprs_subscr *subscr, |
Harald Welte | 5f2524f | 2016-05-05 18:25:12 +0200 | [diff] [blame] | 438 | struct osmo_gsup_message *gsup_msg) |
| 439 | { |
| 440 | struct osmo_gsup_message gsup_reply = {0}; |
| 441 | |
| 442 | gprs_subscr_gsup_insert_data(subscr, gsup_msg); |
| 443 | |
| 444 | subscr->authorized = 1; |
| 445 | subscr->sgsn_data->error_cause = SGSN_ERROR_CAUSE_NONE; |
| 446 | subscr->flags |= GPRS_SUBSCRIBER_ENABLE_PURGE; |
| 447 | gprs_subscr_update(subscr); |
| 448 | |
| 449 | gsup_reply.message_type = OSMO_GSUP_MSGT_INSERT_DATA_RESULT; |
| 450 | return gprs_subscr_tx_gsup_message(subscr, &gsup_reply); |
| 451 | } |
| 452 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 453 | static int check_cause(int cause) |
| 454 | { |
| 455 | switch (cause) { |
| 456 | case GMM_CAUSE_IMSI_UNKNOWN ... GMM_CAUSE_ILLEGAL_ME: |
| 457 | case GMM_CAUSE_GPRS_NOTALLOWED ... GMM_CAUSE_NO_GPRS_PLMN: |
| 458 | return EACCES; |
| 459 | |
| 460 | case GMM_CAUSE_MSC_TEMP_NOTREACH ... GMM_CAUSE_CONGESTION: |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 461 | return EHOSTUNREACH; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 462 | |
| 463 | case GMM_CAUSE_SEM_INCORR_MSG ... GMM_CAUSE_PROTO_ERR_UNSPEC: |
| 464 | default: |
| 465 | return EINVAL; |
| 466 | } |
| 467 | } |
| 468 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 469 | static int gprs_subscr_handle_gsup_auth_err(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 470 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 471 | { |
| 472 | unsigned idx; |
| 473 | struct sgsn_subscriber_data *sdata = subscr->sgsn_data; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 474 | int cause_err; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 475 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 476 | cause_err = check_cause(gsup_msg->cause); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 477 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 478 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 479 | "Send authentication info has failed with cause %d, " |
| 480 | "handled as: %s\n", |
| 481 | gsup_msg->cause, strerror(cause_err)); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 482 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 483 | switch (cause_err) { |
| 484 | case EACCES: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 485 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 486 | "GPRS send auth info req failed, access denied, " |
| 487 | "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 | /* Clear auth tuples */ |
| 491 | memset(sdata->auth_triplets, 0, sizeof(sdata->auth_triplets)); |
| 492 | for (idx = 0; idx < ARRAY_SIZE(sdata->auth_triplets); idx++) |
| 493 | sdata->auth_triplets[idx].key_seq = GSM_KEY_SEQ_INVAL; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 494 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 495 | subscr->authorized = 0; |
| 496 | sdata->error_cause = gsup_msg->cause; |
| 497 | gprs_subscr_update_auth_info(subscr); |
| 498 | break; |
| 499 | |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 500 | case EHOSTUNREACH: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 501 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 502 | "GPRS send auth info req failed, GMM cause = '%s' (%d)\n", |
| 503 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 504 | gsup_msg->cause); |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 505 | |
| 506 | sdata->error_cause = gsup_msg->cause; |
| 507 | gprs_subscr_update_auth_info(subscr); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 508 | break; |
| 509 | |
| 510 | default: |
| 511 | case EINVAL: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 512 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 513 | "GSUP protocol remote error, GMM cause = '%s' (%d)\n", |
| 514 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 515 | gsup_msg->cause); |
Alexander Couzens | 1cec9c4 | 2018-05-22 20:35:55 +0200 | [diff] [blame] | 516 | sdata->error_cause = gsup_msg->cause; |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 517 | break; |
| 518 | } |
| 519 | |
| 520 | return -gsup_msg->cause; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 521 | } |
| 522 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 523 | 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] | 524 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 525 | { |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 526 | int cause_err; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 527 | |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 528 | cause_err = check_cause(gsup_msg->cause); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 529 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 530 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 531 | "Update location has failed with cause %d, handled as: %s\n", |
| 532 | gsup_msg->cause, strerror(cause_err)); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 533 | |
| 534 | switch (cause_err) { |
| 535 | case EACCES: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 536 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 537 | "GPRS update location failed, access denied, " |
| 538 | "GMM cause = '%s' (%d)\n", |
| 539 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 540 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 541 | |
| 542 | subscr->authorized = 0; |
| 543 | subscr->sgsn_data->error_cause = gsup_msg->cause; |
| 544 | gprs_subscr_update_auth_info(subscr); |
| 545 | break; |
| 546 | |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 547 | case EHOSTUNREACH: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 548 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 549 | "GPRS update location failed, GMM cause = '%s' (%d)\n", |
| 550 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 551 | gsup_msg->cause); |
Jacob Erlbeck | f06fe29 | 2015-01-05 16:20:47 +0100 | [diff] [blame] | 552 | |
| 553 | subscr->sgsn_data->error_cause = gsup_msg->cause; |
| 554 | gprs_subscr_update_auth_info(subscr); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 555 | break; |
| 556 | |
| 557 | default: |
| 558 | case EINVAL: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 559 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
| 560 | "GSUP protocol remote error, GMM cause = '%s' (%d)\n", |
| 561 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 562 | gsup_msg->cause); |
Jacob Erlbeck | 9aa9991 | 2015-01-05 18:38:41 +0100 | [diff] [blame] | 563 | break; |
| 564 | } |
| 565 | |
| 566 | return -gsup_msg->cause; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 567 | } |
| 568 | |
Jacob Erlbeck | 929acdf | 2015-01-27 13:47:24 +0100 | [diff] [blame] | 569 | static int gprs_subscr_handle_gsup_purge_no_subscr( |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 570 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 929acdf | 2015-01-27 13:47:24 +0100 | [diff] [blame] | 571 | { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 572 | if (OSMO_GSUP_IS_MSGT_ERROR(gsup_msg->message_type)) { |
Jacob Erlbeck | 929acdf | 2015-01-27 13:47:24 +0100 | [diff] [blame] | 573 | LOGGSUPP(LOGL_NOTICE, gsup_msg, |
| 574 | "Purge MS has failed with cause '%s' (%d)\n", |
| 575 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 576 | gsup_msg->cause); |
| 577 | return -gsup_msg->cause; |
| 578 | } |
| 579 | |
| 580 | LOGGSUPP(LOGL_INFO, gsup_msg, "Completing purge MS\n"); |
| 581 | return 0; |
| 582 | } |
| 583 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 584 | static int gprs_subscr_handle_gsup_purge_res(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 585 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 586 | { |
| 587 | LOGGSUBSCRP(LOGL_INFO, subscr, "Completing purge MS\n"); |
| 588 | |
| 589 | /* Force silent cancellation */ |
Jacob Erlbeck | d6267d1 | 2015-01-19 11:10:04 +0100 | [diff] [blame] | 590 | subscr->sgsn_data->error_cause = SGSN_ERROR_CAUSE_NONE; |
Jacob Erlbeck | 37139e5 | 2015-01-23 13:52:55 +0100 | [diff] [blame] | 591 | gprs_subscr_cancel(subscr); |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 592 | |
| 593 | return 0; |
| 594 | } |
| 595 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 596 | static int gprs_subscr_handle_gsup_purge_err(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 597 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 598 | { |
| 599 | LOGGSUBSCRP(LOGL_NOTICE, subscr, |
| 600 | "Purge MS has failed with cause '%s' (%d)\n", |
| 601 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 602 | gsup_msg->cause); |
| 603 | |
| 604 | /* In GSM 09.02, 19.1.4.4, the text and the SDL diagram imply that |
| 605 | * the subscriber data is not removed if the request has failed. On the |
| 606 | * other hand, keeping the subscriber data in either error case |
| 607 | * (subscriber unknown, syntactical message error, connection error) |
| 608 | * doesn't seem to give any advantage, since the data will be restored |
| 609 | * on the next Attach Request anyway. |
| 610 | * This approach ensures, that the subscriber record will not stick if |
| 611 | * an error happens. |
| 612 | */ |
| 613 | |
| 614 | /* TODO: Check whether this behaviour is acceptable and either just |
| 615 | * remove this TODO-notice or change the implementation to not delete |
| 616 | * the subscriber data (eventually resetting the ENABLE_PURGE flag and |
| 617 | * restarting the expiry timer based on the cause). |
| 618 | * |
| 619 | * Subscriber Unknown: cancel subscr |
| 620 | * Temporary network problems: do nothing (handled by timer based retry) |
| 621 | * Message problems (syntax, nyi, ...): cancel subscr (retry won't help) |
| 622 | */ |
| 623 | |
| 624 | gprs_subscr_handle_gsup_purge_res(subscr, gsup_msg); |
| 625 | |
| 626 | return -gsup_msg->cause; |
| 627 | } |
| 628 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 629 | static int gprs_subscr_handle_loc_cancel_req(struct gprs_subscr *subscr, |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 630 | struct osmo_gsup_message *gsup_msg) |
Jacob Erlbeck | 87c7ffc | 2015-01-08 15:29:01 +0100 | [diff] [blame] | 631 | { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 632 | struct osmo_gsup_message gsup_reply = {0}; |
Jacob Erlbeck | 5b51205 | 2015-04-07 17:49:48 +0200 | [diff] [blame] | 633 | int is_update_procedure = !gsup_msg->cancel_type || |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 634 | gsup_msg->cancel_type == OSMO_GSUP_CANCEL_TYPE_UPDATE; |
Jacob Erlbeck | 87c7ffc | 2015-01-08 15:29:01 +0100 | [diff] [blame] | 635 | |
Jacob Erlbeck | 8000e0e | 2015-01-27 14:56:40 +0100 | [diff] [blame] | 636 | LOGGSUBSCRP(LOGL_INFO, subscr, "Cancelling MS subscriber (%s)\n", |
| 637 | is_update_procedure ? |
| 638 | "update procedure" : "subscription withdraw"); |
Jacob Erlbeck | 87c7ffc | 2015-01-08 15:29:01 +0100 | [diff] [blame] | 639 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 640 | gsup_reply.message_type = OSMO_GSUP_MSGT_LOCATION_CANCEL_RESULT; |
Jacob Erlbeck | 87c7ffc | 2015-01-08 15:29:01 +0100 | [diff] [blame] | 641 | gprs_subscr_tx_gsup_message(subscr, &gsup_reply); |
| 642 | |
Jacob Erlbeck | 8000e0e | 2015-01-27 14:56:40 +0100 | [diff] [blame] | 643 | if (is_update_procedure) |
| 644 | subscr->sgsn_data->error_cause = SGSN_ERROR_CAUSE_NONE; |
| 645 | else |
| 646 | /* Since a withdraw cause is not specified, just abort the |
| 647 | * current attachment. The following re-attachment should then |
| 648 | * be rejected with a proper cause value. |
| 649 | */ |
| 650 | subscr->sgsn_data->error_cause = GMM_CAUSE_IMPL_DETACHED; |
| 651 | |
Jacob Erlbeck | 37139e5 | 2015-01-23 13:52:55 +0100 | [diff] [blame] | 652 | gprs_subscr_cancel(subscr); |
Jacob Erlbeck | 87c7ffc | 2015-01-08 15:29:01 +0100 | [diff] [blame] | 653 | |
| 654 | return 0; |
| 655 | } |
| 656 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 657 | 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] | 658 | { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 659 | if (OSMO_GSUP_IS_MSGT_REQUEST(gsup_msg->message_type)) { |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 660 | gprs_subscr_tx_gsup_error_reply(NULL, gsup_msg, |
| 661 | GMM_CAUSE_IMSI_UNKNOWN); |
| 662 | LOGP(DGPRS, LOGL_NOTICE, |
| 663 | "Unknown IMSI %s, discarding GSUP request " |
| 664 | "of type 0x%02x\n", |
| 665 | gsup_msg->imsi, gsup_msg->message_type); |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 666 | } else if (OSMO_GSUP_IS_MSGT_ERROR(gsup_msg->message_type)) { |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 667 | LOGP(DGPRS, LOGL_NOTICE, |
| 668 | "Unknown IMSI %s, discarding GSUP error " |
| 669 | "of type 0x%02x, cause '%s' (%d)\n", |
| 670 | gsup_msg->imsi, gsup_msg->message_type, |
| 671 | get_value_string(gsm48_gmm_cause_names, gsup_msg->cause), |
| 672 | gsup_msg->cause); |
| 673 | } else { |
| 674 | LOGP(DGPRS, LOGL_NOTICE, |
| 675 | "Unknown IMSI %s, discarding GSUP response " |
| 676 | "of type 0x%02x\n", |
| 677 | gsup_msg->imsi, gsup_msg->message_type); |
| 678 | } |
| 679 | |
| 680 | return -GMM_CAUSE_IMSI_UNKNOWN; |
| 681 | } |
| 682 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 683 | int gprs_subscr_rx_gsup_message(struct msgb *msg) |
| 684 | { |
| 685 | uint8_t *data = msgb_l2(msg); |
| 686 | size_t data_len = msgb_l2len(msg); |
| 687 | int rc = 0; |
| 688 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 689 | struct osmo_gsup_message gsup_msg = {0}; |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 690 | struct gprs_subscr *subscr; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 691 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 692 | rc = osmo_gsup_decode(data, data_len, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 693 | if (rc < 0) { |
| 694 | LOGP(DGPRS, LOGL_ERROR, |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 695 | "decoding GSUP message fails with error '%s' (%d)\n", |
| 696 | get_value_string(gsm48_gmm_cause_names, -rc), -rc); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 697 | return rc; |
| 698 | } |
| 699 | |
Jacob Erlbeck | 07f6e36 | 2015-01-29 14:00:28 +0100 | [diff] [blame] | 700 | if (!gsup_msg.imsi[0]) { |
| 701 | LOGP(DGPRS, LOGL_ERROR, "Missing IMSI in GSUP message\n"); |
| 702 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 703 | if (OSMO_GSUP_IS_MSGT_REQUEST(gsup_msg.message_type)) |
Jacob Erlbeck | 07f6e36 | 2015-01-29 14:00:28 +0100 | [diff] [blame] | 704 | gprs_subscr_tx_gsup_error_reply(NULL, &gsup_msg, |
| 705 | GMM_CAUSE_INV_MAND_INFO); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 706 | return -GMM_CAUSE_INV_MAND_INFO; |
Jacob Erlbeck | 07f6e36 | 2015-01-29 14:00:28 +0100 | [diff] [blame] | 707 | } |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 708 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 709 | 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] | 710 | gsup_msg.cause = GMM_CAUSE_NET_FAIL; |
| 711 | |
Jacob Erlbeck | 4dedb27 | 2015-01-15 17:50:16 +0100 | [diff] [blame] | 712 | subscr = gprs_subscr_get_by_imsi(gsup_msg.imsi); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 713 | |
Jacob Erlbeck | 929acdf | 2015-01-27 13:47:24 +0100 | [diff] [blame] | 714 | if (!subscr) { |
| 715 | switch (gsup_msg.message_type) { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 716 | case OSMO_GSUP_MSGT_PURGE_MS_RESULT: |
| 717 | case OSMO_GSUP_MSGT_PURGE_MS_ERROR: |
Jacob Erlbeck | 929acdf | 2015-01-27 13:47:24 +0100 | [diff] [blame] | 718 | return gprs_subscr_handle_gsup_purge_no_subscr(&gsup_msg); |
| 719 | default: |
| 720 | return gprs_subscr_handle_unknown_imsi(&gsup_msg); |
| 721 | } |
| 722 | } |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 723 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 724 | LOGGSUBSCRP(LOGL_INFO, subscr, |
Max | a66d8cf | 2017-02-15 11:43:59 +0100 | [diff] [blame] | 725 | "Received GSUP message %s\n", |
| 726 | osmo_gsup_message_type_name(gsup_msg.message_type)); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 727 | |
| 728 | switch (gsup_msg.message_type) { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 729 | case OSMO_GSUP_MSGT_LOCATION_CANCEL_REQUEST: |
Jacob Erlbeck | 87c7ffc | 2015-01-08 15:29:01 +0100 | [diff] [blame] | 730 | rc = gprs_subscr_handle_loc_cancel_req(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 731 | break; |
| 732 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 733 | case OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 734 | rc = gprs_subscr_handle_gsup_auth_res(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 735 | break; |
| 736 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 737 | case OSMO_GSUP_MSGT_SEND_AUTH_INFO_ERROR: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 738 | rc = gprs_subscr_handle_gsup_auth_err(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 739 | break; |
| 740 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 741 | case OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 742 | rc = gprs_subscr_handle_gsup_upd_loc_res(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 743 | break; |
| 744 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 745 | case OSMO_GSUP_MSGT_UPDATE_LOCATION_ERROR: |
Jacob Erlbeck | bce2061 | 2015-01-05 18:57:32 +0100 | [diff] [blame] | 746 | rc = gprs_subscr_handle_gsup_upd_loc_err(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 747 | break; |
| 748 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 749 | case OSMO_GSUP_MSGT_PURGE_MS_ERROR: |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 750 | rc = gprs_subscr_handle_gsup_purge_err(subscr, &gsup_msg); |
| 751 | break; |
| 752 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 753 | case OSMO_GSUP_MSGT_PURGE_MS_RESULT: |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 754 | rc = gprs_subscr_handle_gsup_purge_res(subscr, &gsup_msg); |
| 755 | break; |
| 756 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 757 | case OSMO_GSUP_MSGT_INSERT_DATA_REQUEST: |
Harald Welte | 5f2524f | 2016-05-05 18:25:12 +0200 | [diff] [blame] | 758 | rc = gprs_subscr_handle_gsup_isd_req(subscr, &gsup_msg); |
| 759 | break; |
| 760 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 761 | case OSMO_GSUP_MSGT_DELETE_DATA_REQUEST: |
Max | a66d8cf | 2017-02-15 11:43:59 +0100 | [diff] [blame] | 762 | rc = gprs_subscr_handle_gsup_dsd_req(subscr, &gsup_msg); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 763 | break; |
| 764 | |
| 765 | default: |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 766 | LOGGSUBSCRP(LOGL_ERROR, subscr, |
Max | a66d8cf | 2017-02-15 11:43:59 +0100 | [diff] [blame] | 767 | "Rx GSUP message %s not valid at SGSN\n", |
| 768 | osmo_gsup_message_type_name(gsup_msg.message_type)); |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 769 | if (OSMO_GSUP_IS_MSGT_REQUEST(gsup_msg.message_type)) |
Jacob Erlbeck | 9999fd9 | 2015-01-15 17:08:30 +0100 | [diff] [blame] | 770 | gprs_subscr_tx_gsup_error_reply( |
| 771 | subscr, &gsup_msg, GMM_CAUSE_MSGT_NOTEXIST_NOTIMPL); |
| 772 | rc = -GMM_CAUSE_MSGT_NOTEXIST_NOTIMPL; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 773 | break; |
| 774 | }; |
| 775 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 776 | gprs_subscr_put(subscr); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 777 | |
| 778 | return rc; |
| 779 | } |
| 780 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 781 | int gprs_subscr_purge(struct gprs_subscr *subscr) |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 782 | { |
Holger Hans Peter Freyther | 10c0f56 | 2015-05-17 20:58:40 +0200 | [diff] [blame] | 783 | struct sgsn_subscriber_data *sdata = subscr->sgsn_data; |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 784 | struct osmo_gsup_message gsup_msg = {0}; |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 785 | |
| 786 | LOGGSUBSCRP(LOGL_INFO, subscr, "purging MS subscriber\n"); |
| 787 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 788 | gsup_msg.message_type = OSMO_GSUP_MSGT_PURGE_MS_REQUEST; |
Holger Hans Peter Freyther | 10c0f56 | 2015-05-17 20:58:40 +0200 | [diff] [blame] | 789 | |
| 790 | /* Provide the HLR number in case it is known */ |
| 791 | gsup_msg.hlr_enc_len = sdata->hlr_len; |
| 792 | gsup_msg.hlr_enc = sdata->hlr; |
| 793 | |
Jacob Erlbeck | ca69b0f | 2015-02-03 19:45:46 +0100 | [diff] [blame] | 794 | return gprs_subscr_tx_gsup_message(subscr, &gsup_msg); |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 795 | } |
| 796 | |
Neels Hofmeyr | 058cd57 | 2017-02-24 06:24:45 +0100 | [diff] [blame] | 797 | static int gprs_subscr_query_auth_info(struct gprs_subscr *subscr, |
| 798 | const uint8_t *auts, |
| 799 | const uint8_t *auts_rand) |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 800 | { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 801 | struct osmo_gsup_message gsup_msg = {0}; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 802 | |
Neels Hofmeyr | 058cd57 | 2017-02-24 06:24:45 +0100 | [diff] [blame] | 803 | /* Make sure we have a complete resync or clearly no resync. */ |
| 804 | OSMO_ASSERT((auts != NULL) == (auts_rand != NULL)); |
| 805 | |
| 806 | LOGGSUBSCRP(LOGL_INFO, subscr, "requesting auth info%s\n", |
| 807 | auts ? " with AUTS (UMTS Resynch)" : ""); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 808 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 809 | gsup_msg.message_type = OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST; |
Neels Hofmeyr | 058cd57 | 2017-02-24 06:24:45 +0100 | [diff] [blame] | 810 | gsup_msg.auts = auts; |
| 811 | gsup_msg.rand = auts_rand; |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 812 | return gprs_subscr_tx_gsup_message(subscr, &gsup_msg); |
| 813 | } |
| 814 | |
Neels Hofmeyr | b63e19d | 2019-12-26 16:56:14 +0100 | [diff] [blame] | 815 | int gprs_subscr_location_update(struct gprs_subscr *subscr, enum sgsn_ran_type ran_type) |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 816 | { |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 817 | struct osmo_gsup_message gsup_msg = {0}; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 818 | |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 819 | LOGGSUBSCRP(LOGL_INFO, subscr, |
| 820 | "subscriber data is not available\n"); |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 821 | |
Harald Welte | 28903a9 | 2016-04-25 14:53:43 +0200 | [diff] [blame] | 822 | gsup_msg.message_type = OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST; |
Neels Hofmeyr | b63e19d | 2019-12-26 16:56:14 +0100 | [diff] [blame] | 823 | |
| 824 | switch (ran_type) { |
| 825 | case MM_CTX_T_GERAN_Gb: |
| 826 | gsup_msg.current_rat_type = OSMO_RAT_GERAN_A; |
| 827 | break; |
| 828 | case MM_CTX_T_UTRAN_Iu: |
| 829 | gsup_msg.current_rat_type = OSMO_RAT_UTRAN_IU; |
| 830 | break; |
| 831 | default: |
| 832 | break; |
| 833 | } |
| 834 | |
Jacob Erlbeck | a6ddc2d | 2014-12-12 15:01:37 +0100 | [diff] [blame] | 835 | return gprs_subscr_tx_gsup_message(subscr, &gsup_msg); |
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 | void gprs_subscr_update(struct gprs_subscr *subscr) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 839 | { |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 840 | LOGGSUBSCRP(LOGL_DEBUG, subscr, "Updating subscriber data\n"); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 841 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 842 | subscr->flags &= ~GPRS_SUBSCRIBER_UPDATE_LOCATION_PENDING; |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 843 | subscr->flags &= ~GPRS_SUBSCRIBER_FIRST_CONTACT; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 844 | |
Jacob Erlbeck | 555b2e5 | 2015-01-26 13:52:42 +0100 | [diff] [blame] | 845 | if (subscr->sgsn_data->mm) |
| 846 | sgsn_update_subscriber_data(subscr->sgsn_data->mm); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 847 | } |
| 848 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 849 | void gprs_subscr_update_auth_info(struct gprs_subscr *subscr) |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 850 | { |
Jacob Erlbeck | bf34c67 | 2014-12-23 14:24:16 +0100 | [diff] [blame] | 851 | LOGGSUBSCRP(LOGL_DEBUG, subscr, |
| 852 | "Updating subscriber authentication info\n"); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 853 | |
| 854 | subscr->flags &= ~GPRS_SUBSCRIBER_UPDATE_AUTH_INFO_PENDING; |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 855 | subscr->flags &= ~GPRS_SUBSCRIBER_FIRST_CONTACT; |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 856 | |
Jacob Erlbeck | 555b2e5 | 2015-01-26 13:52:42 +0100 | [diff] [blame] | 857 | if (subscr->sgsn_data->mm) |
| 858 | sgsn_update_subscriber_data(subscr->sgsn_data->mm); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 859 | } |
| 860 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 861 | 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] | 862 | { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 863 | struct gprs_subscr *subscr = NULL; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 864 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 865 | if (mmctx->subscr) |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 866 | return gprs_subscr_get(mmctx->subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 867 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 868 | if (mmctx->imsi[0]) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 869 | subscr = gprs_subscr_get_by_imsi(mmctx->imsi); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 870 | |
| 871 | if (!subscr) { |
| 872 | subscr = gprs_subscr_get_or_create(mmctx->imsi); |
Alexander Couzens | 3326ba7 | 2020-12-09 22:02:55 +0100 | [diff] [blame] | 873 | if (!subscr) |
| 874 | return NULL; |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 875 | subscr->flags |= GPRS_SUBSCRIBER_FIRST_CONTACT; |
Jacob Erlbeck | 65fa3f7 | 2015-01-06 16:32:41 +0100 | [diff] [blame] | 876 | subscr->flags &= ~GPRS_SUBSCRIBER_ENABLE_PURGE; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 877 | } |
| 878 | |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 879 | osmo_strlcpy(subscr->imei, mmctx->imei, sizeof(subscr->imei)); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 880 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 881 | if (subscr->lac != mmctx->ra.lac) |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 882 | subscr->lac = mmctx->ra.lac; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 883 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 884 | subscr->sgsn_data->mm = mmctx; |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 885 | mmctx->subscr = gprs_subscr_get(subscr); |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 886 | |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 887 | return subscr; |
| 888 | } |
| 889 | |
| 890 | int gprs_subscr_request_update_location(struct sgsn_mm_ctx *mmctx) |
| 891 | { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 892 | struct gprs_subscr *subscr = NULL; |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 893 | int rc; |
| 894 | |
| 895 | LOGMMCTXP(LOGL_DEBUG, mmctx, "Requesting subscriber data update\n"); |
| 896 | |
| 897 | subscr = gprs_subscr_get_or_create_by_mmctx(mmctx); |
Alexander Couzens | 3326ba7 | 2020-12-09 22:02:55 +0100 | [diff] [blame] | 898 | if (!subscr) |
| 899 | return -ENOMEM; |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 900 | |
| 901 | subscr->flags |= GPRS_SUBSCRIBER_UPDATE_LOCATION_PENDING; |
| 902 | |
Neels Hofmeyr | b63e19d | 2019-12-26 16:56:14 +0100 | [diff] [blame] | 903 | rc = gprs_subscr_location_update(subscr, mmctx->ran_type); |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 904 | gprs_subscr_put(subscr); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 905 | return rc; |
| 906 | } |
| 907 | |
Neels Hofmeyr | 058cd57 | 2017-02-24 06:24:45 +0100 | [diff] [blame] | 908 | /*! \brief Send Update Auth Info request via GSUP, with or without resync. |
| 909 | * \param[in] mmctx MM context to request authentication tuples for. |
| 910 | * \param[in] auts 14 octet AUTS token for UMTS resync, or NULL. |
| 911 | * \param[in] auts_rand 16 octet Random token for UMTS resync, or NULL. |
| 912 | * In case of normal Authentication Info request, both \a auts and \a auts_rand |
| 913 | * must be NULL. For resync, both must be non-NULL. |
| 914 | */ |
| 915 | int gprs_subscr_request_auth_info(struct sgsn_mm_ctx *mmctx, |
| 916 | const uint8_t *auts, |
| 917 | const uint8_t *auts_rand) |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 918 | { |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 919 | struct gprs_subscr *subscr = NULL; |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 920 | int rc; |
| 921 | |
| 922 | LOGMMCTXP(LOGL_DEBUG, mmctx, "Requesting subscriber authentication info\n"); |
| 923 | |
| 924 | subscr = gprs_subscr_get_or_create_by_mmctx(mmctx); |
Alexander Couzens | 3326ba7 | 2020-12-09 22:02:55 +0100 | [diff] [blame] | 925 | if (!subscr) |
| 926 | return -ENOMEM; |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 927 | |
| 928 | subscr->flags |= GPRS_SUBSCRIBER_UPDATE_AUTH_INFO_PENDING; |
| 929 | |
Neels Hofmeyr | 058cd57 | 2017-02-24 06:24:45 +0100 | [diff] [blame] | 930 | rc = gprs_subscr_query_auth_info(subscr, auts, auts_rand); |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 931 | gprs_subscr_put(subscr); |
Jacob Erlbeck | 98a95ac | 2014-11-28 14:55:25 +0100 | [diff] [blame] | 932 | return rc; |
Jacob Erlbeck | 33b6dad | 2014-11-12 10:12:11 +0100 | [diff] [blame] | 933 | } |
Neels Hofmeyr | 0e5d807 | 2017-01-10 00:49:56 +0100 | [diff] [blame] | 934 | |
| 935 | static void gprs_subscr_free(struct gprs_subscr *gsub) |
| 936 | { |
| 937 | llist_del(&gsub->entry); |
| 938 | talloc_free(gsub); |
| 939 | } |
| 940 | |
| 941 | struct gprs_subscr *_gprs_subscr_get(struct gprs_subscr *gsub, |
| 942 | const char *file, int line) |
| 943 | { |
| 944 | OSMO_ASSERT(gsub->use_count < INT_MAX); |
| 945 | gsub->use_count++; |
| 946 | LOGPSRC(DREF, LOGL_DEBUG, file, line, |
| 947 | "subscr %s usage increases to: %d\n", |
| 948 | gsub->imsi, gsub->use_count); |
| 949 | return gsub; |
| 950 | } |
| 951 | |
| 952 | struct gprs_subscr *_gprs_subscr_put(struct gprs_subscr *gsub, |
| 953 | const char *file, int line) |
| 954 | { |
| 955 | gsub->use_count--; |
| 956 | LOGPSRC(DREF, gsub->use_count >= 0? LOGL_DEBUG : LOGL_ERROR, |
| 957 | file, line, |
| 958 | "subscr %s usage decreases to: %d%s\n", |
| 959 | gsub->imsi, gsub->use_count, |
| 960 | gsub->keep_in_ram? ", keep-in-ram flag is set" : ""); |
| 961 | if (gsub->use_count > 0) |
| 962 | return gsub; |
| 963 | if (gsub->keep_in_ram) |
| 964 | return gsub; |
| 965 | gprs_subscr_free(gsub); |
| 966 | return NULL; |
| 967 | } |