Harald Welte | 936f672 | 2016-05-03 18:51:18 +0200 | [diff] [blame] | 1 | /* (C) 2016 by Harald Welte <laforge@gnumonks.org> |
| 2 | * |
| 3 | * All Rights Reserved |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU Affero General Public License as published by |
| 7 | * the Free Software Foundation; either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU Affero General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU Affero General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | * |
| 18 | */ |
| 19 | |
Harald Welte | aabae9e | 2016-04-28 12:48:14 +0200 | [diff] [blame] | 20 | #include <signal.h> |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 21 | #include <errno.h> |
Harald Welte | aabae9e | 2016-04-28 12:48:14 +0200 | [diff] [blame] | 22 | |
Neels Hofmeyr | 7f9491f | 2017-01-30 13:30:47 +0100 | [diff] [blame^] | 23 | #include <getopt.h> |
| 24 | |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 25 | #include <osmocom/core/msgb.h> |
| 26 | #include <osmocom/core/logging.h> |
| 27 | #include <osmocom/core/application.h> |
| 28 | #include <osmocom/gsm/gsup.h> |
Max | 2fc63a6 | 2016-12-20 16:49:20 +0100 | [diff] [blame] | 29 | #include <osmocom/gsm/apn.h> |
Neels Hofmeyr | 627de84 | 2016-12-19 13:16:06 +0100 | [diff] [blame] | 30 | #include <osmocom/gsm/gsm48_ie.h> |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 31 | |
| 32 | #include "db.h" |
| 33 | #include "logging.h" |
| 34 | #include "gsup_server.h" |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 35 | #include "gsup_router.h" |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 36 | #include "rand.h" |
| 37 | |
| 38 | static struct db_context *g_dbc; |
| 39 | |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 40 | /*********************************************************************** |
| 41 | * Send Auth Info handling |
| 42 | ***********************************************************************/ |
| 43 | |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 44 | /* process an incoming SAI request */ |
| 45 | static int rx_send_auth_info(struct osmo_gsup_conn *conn, |
| 46 | const struct osmo_gsup_message *gsup) |
| 47 | { |
| 48 | struct osmo_gsup_message gsup_out; |
| 49 | struct msgb *msg_out; |
| 50 | int rc; |
| 51 | |
| 52 | /* initialize return message structure */ |
| 53 | memset(&gsup_out, 0, sizeof(gsup_out)); |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 54 | memcpy(&gsup_out.imsi, &gsup->imsi, sizeof(gsup_out.imsi)); |
| 55 | |
| 56 | rc = db_get_auc(g_dbc, gsup->imsi, gsup_out.auth_vectors, |
| 57 | ARRAY_SIZE(gsup_out.auth_vectors), |
Harald Welte | 9be0d2f | 2016-06-10 17:34:02 +0200 | [diff] [blame] | 58 | gsup->rand, gsup->auts); |
Harald Welte | cfc752b | 2016-05-05 16:38:14 +0200 | [diff] [blame] | 59 | if (rc < 0) { |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 60 | gsup_out.message_type = OSMO_GSUP_MSGT_SEND_AUTH_INFO_ERROR; |
Harald Welte | cfc752b | 2016-05-05 16:38:14 +0200 | [diff] [blame] | 61 | gsup_out.cause = GMM_CAUSE_NET_FAIL; |
| 62 | } else if (rc == 0) { |
| 63 | gsup_out.message_type = OSMO_GSUP_MSGT_SEND_AUTH_INFO_ERROR; |
| 64 | gsup_out.cause = GMM_CAUSE_IMSI_UNKNOWN; |
Harald Welte | 15db826 | 2016-05-05 16:50:39 +0200 | [diff] [blame] | 65 | } else { |
| 66 | gsup_out.message_type = OSMO_GSUP_MSGT_SEND_AUTH_INFO_RESULT; |
| 67 | gsup_out.num_auth_vectors = rc; |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 68 | } |
| 69 | |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 70 | msg_out = msgb_alloc_headroom(1024+16, 16, "GSUP AUC response"); |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 71 | osmo_gsup_encode(msg_out, &gsup_out); |
| 72 | return osmo_gsup_conn_send(conn, msg_out); |
| 73 | } |
| 74 | |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 75 | /*********************************************************************** |
| 76 | * LU Operation State / Structure |
| 77 | ***********************************************************************/ |
| 78 | |
| 79 | static LLIST_HEAD(g_lu_ops); |
| 80 | |
| 81 | #define CANCEL_TIMEOUT_SECS 30 |
| 82 | #define ISD_TIMEOUT_SECS 30 |
| 83 | |
| 84 | enum lu_state { |
| 85 | LU_S_NULL, |
| 86 | LU_S_LU_RECEIVED, |
| 87 | LU_S_CANCEL_SENT, |
| 88 | LU_S_CANCEL_ACK_RECEIVED, |
| 89 | LU_S_ISD_SENT, |
| 90 | LU_S_ISD_ACK_RECEIVED, |
| 91 | LU_S_COMPLETE, |
| 92 | }; |
| 93 | |
| 94 | static const struct value_string lu_state_names[] = { |
| 95 | { LU_S_NULL, "NULL" }, |
| 96 | { LU_S_LU_RECEIVED, "LU RECEIVED" }, |
| 97 | { LU_S_CANCEL_SENT, "CANCEL SENT" }, |
| 98 | { LU_S_CANCEL_ACK_RECEIVED, "CANCEL-ACK RECEIVED" }, |
| 99 | { LU_S_ISD_SENT, "ISD SENT" }, |
| 100 | { LU_S_ISD_ACK_RECEIVED, "ISD-ACK RECEIVED" }, |
| 101 | { LU_S_COMPLETE, "COMPLETE" }, |
| 102 | { 0, NULL } |
| 103 | }; |
| 104 | |
| 105 | struct lu_operation { |
| 106 | /*! entry in global list of location update operations */ |
| 107 | struct llist_head list; |
| 108 | /*! to which gsup_server do we belong */ |
| 109 | struct osmo_gsup_server *gsup_server; |
| 110 | /*! state of the location update */ |
| 111 | enum lu_state state; |
| 112 | /*! CS (false) or PS (true) Location Update? */ |
| 113 | bool is_ps; |
| 114 | /*! currently running timer */ |
| 115 | struct osmo_timer_list timer; |
| 116 | |
| 117 | /*! subscriber related to this operation */ |
| 118 | struct hlr_subscriber subscr; |
| 119 | /*! peer VLR/SGSN starting the request */ |
| 120 | uint8_t *peer; |
| 121 | }; |
| 122 | |
Neels Hofmeyr | 6eed322 | 2016-12-11 01:21:49 +0100 | [diff] [blame] | 123 | void lu_op_tx_insert_subscr_data(struct lu_operation *luop); |
| 124 | |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 125 | void lu_op_statechg(struct lu_operation *luop, enum lu_state new_state) |
| 126 | { |
| 127 | enum lu_state old_state = luop->state; |
| 128 | |
| 129 | DEBUGP(DMAIN, "LU OP state change: %s -> ", |
| 130 | get_value_string(lu_state_names, old_state)); |
| 131 | DEBUGPC(DMAIN, "%s\n", |
| 132 | get_value_string(lu_state_names, new_state)); |
| 133 | |
| 134 | luop->state = new_state; |
| 135 | } |
| 136 | |
| 137 | struct lu_operation *lu_op_by_imsi(const char *imsi) |
| 138 | { |
| 139 | struct lu_operation *luop; |
| 140 | |
| 141 | llist_for_each_entry(luop, &g_lu_ops, list) { |
| 142 | if (!strcmp(imsi, luop->subscr.imsi)) |
| 143 | return luop; |
| 144 | } |
| 145 | return NULL; |
| 146 | } |
| 147 | |
| 148 | /* Send a msgb to a given address using routing */ |
| 149 | int osmo_gsup_addr_send(struct osmo_gsup_server *gs, |
| 150 | const uint8_t *addr, size_t addrlen, |
| 151 | struct msgb *msg) |
| 152 | { |
| 153 | struct osmo_gsup_conn *conn; |
| 154 | |
| 155 | conn = gsup_route_find(gs, addr, addrlen); |
| 156 | if (!conn) { |
| 157 | DEBUGP(DMAIN, "Cannot find route for addr %s\n", addr); |
| 158 | msgb_free(msg); |
| 159 | return -ENODEV; |
| 160 | } |
| 161 | |
| 162 | return osmo_gsup_conn_send(conn, msg); |
| 163 | } |
| 164 | |
Harald Welte | 9990927 | 2016-05-05 18:24:15 +0200 | [diff] [blame] | 165 | /* Transmit a given GSUP message for the given LU operation */ |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 166 | static void _luop_tx_gsup(struct lu_operation *luop, |
| 167 | const struct osmo_gsup_message *gsup) |
| 168 | { |
| 169 | struct msgb *msg_out; |
| 170 | |
| 171 | msg_out = msgb_alloc_headroom(1024+16, 16, "GSUP LUOP"); |
| 172 | osmo_gsup_encode(msg_out, gsup); |
| 173 | |
| 174 | osmo_gsup_addr_send(luop->gsup_server, luop->peer, |
| 175 | talloc_total_size(luop->peer), |
| 176 | msg_out); |
| 177 | } |
| 178 | |
| 179 | /*! Transmit UPD_LOC_ERROR and destroy lu_operation */ |
| 180 | void lu_op_tx_error(struct lu_operation *luop, enum gsm48_gmm_cause cause) |
| 181 | { |
| 182 | struct osmo_gsup_message gsup; |
| 183 | |
| 184 | DEBUGP(DMAIN, "%s: LU OP Tx Error (cause=%u)\n", |
| 185 | luop->subscr.imsi, cause); |
| 186 | |
| 187 | memset(&gsup, 0, sizeof(gsup)); |
| 188 | gsup.message_type = OSMO_GSUP_MSGT_UPDATE_LOCATION_ERROR; |
Neels Hofmeyr | ec1b959 | 2016-12-11 01:22:23 +0100 | [diff] [blame] | 189 | strncpy((char*)&gsup.imsi, luop->subscr.imsi, sizeof(gsup.imsi)); |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 190 | gsup.imsi[sizeof(gsup.imsi)-1] = '\0'; |
| 191 | gsup.cause = cause; |
| 192 | |
| 193 | _luop_tx_gsup(luop, &gsup); |
| 194 | |
| 195 | llist_del(&luop->list); |
| 196 | talloc_free(luop); |
| 197 | } |
| 198 | |
Harald Welte | 9990927 | 2016-05-05 18:24:15 +0200 | [diff] [blame] | 199 | /* timer call-back in case LU operation doesn't receive an response */ |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 200 | static void lu_op_timer_cb(void *data) |
| 201 | { |
| 202 | struct lu_operation *luop = data; |
| 203 | |
| 204 | DEBUGP(DMAIN, "LU OP timer expired in state %s\n", |
| 205 | get_value_string(lu_state_names, luop->state)); |
| 206 | |
| 207 | switch (luop->state) { |
| 208 | case LU_S_CANCEL_SENT: |
| 209 | break; |
| 210 | case LU_S_ISD_SENT: |
| 211 | break; |
| 212 | default: |
| 213 | break; |
| 214 | } |
| 215 | |
| 216 | lu_op_tx_error(luop, GMM_CAUSE_NET_FAIL); |
| 217 | } |
| 218 | |
| 219 | /*! Transmit UPD_LOC_RESULT and destroy lu_operation */ |
| 220 | void lu_op_tx_ack(struct lu_operation *luop) |
| 221 | { |
| 222 | struct osmo_gsup_message gsup; |
| 223 | |
| 224 | memset(&gsup, 0, sizeof(gsup)); |
| 225 | gsup.message_type = OSMO_GSUP_MSGT_UPDATE_LOCATION_RESULT; |
| 226 | strncpy(gsup.imsi, luop->subscr.imsi, sizeof(gsup.imsi)-1); |
| 227 | //FIXME gsup.hlr_enc; |
| 228 | |
| 229 | _luop_tx_gsup(luop, &gsup); |
| 230 | |
| 231 | llist_del(&luop->list); |
| 232 | talloc_free(luop); |
| 233 | } |
| 234 | |
| 235 | /*! Send Cancel Location to old VLR/SGSN */ |
| 236 | void lu_op_tx_cancel_old(struct lu_operation *luop) |
| 237 | { |
| 238 | struct osmo_gsup_message gsup; |
| 239 | |
| 240 | OSMO_ASSERT(luop->state == LU_S_LU_RECEIVED); |
| 241 | |
| 242 | memset(&gsup, 0, sizeof(gsup)); |
| 243 | gsup.message_type = OSMO_GSUP_MSGT_LOCATION_CANCEL_REQUEST; |
| 244 | //gsup.cause = FIXME; |
| 245 | //gsup.cancel_type = FIXME; |
| 246 | |
| 247 | _luop_tx_gsup(luop, &gsup); |
| 248 | |
| 249 | lu_op_statechg(luop, LU_S_CANCEL_SENT); |
| 250 | osmo_timer_schedule(&luop->timer, CANCEL_TIMEOUT_SECS, 0); |
| 251 | } |
| 252 | |
| 253 | /*! Receive Cancel Location Result from old VLR/SGSN */ |
| 254 | void lu_op_rx_cancel_old_ack(struct lu_operation *luop, |
| 255 | const struct osmo_gsup_message *gsup) |
| 256 | { |
| 257 | OSMO_ASSERT(luop->state == LU_S_CANCEL_SENT); |
| 258 | /* FIXME: Check for spoofing */ |
| 259 | |
| 260 | osmo_timer_del(&luop->timer); |
| 261 | |
| 262 | /* FIXME */ |
| 263 | |
| 264 | lu_op_tx_insert_subscr_data(luop); |
| 265 | } |
| 266 | |
| 267 | /*! Transmit Insert Subscriber Data to new VLR/SGSN */ |
| 268 | void lu_op_tx_insert_subscr_data(struct lu_operation *luop) |
| 269 | { |
| 270 | struct osmo_gsup_message gsup; |
Max | 2fc63a6 | 2016-12-20 16:49:20 +0100 | [diff] [blame] | 271 | uint8_t apn[APN_MAXLEN]; |
Neels Hofmeyr | 627de84 | 2016-12-19 13:16:06 +0100 | [diff] [blame] | 272 | uint8_t msisdn_enc[43]; /* TODO use constant; TS 24.008 10.5.4.7 */ |
Max | 2fc63a6 | 2016-12-20 16:49:20 +0100 | [diff] [blame] | 273 | int l; |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 274 | |
| 275 | OSMO_ASSERT(luop->state == LU_S_LU_RECEIVED || |
| 276 | luop->state == LU_S_CANCEL_ACK_RECEIVED); |
| 277 | |
| 278 | memset(&gsup, 0, sizeof(gsup)); |
| 279 | gsup.message_type = OSMO_GSUP_MSGT_INSERT_DATA_REQUEST; |
| 280 | strncpy(gsup.imsi, luop->subscr.imsi, sizeof(gsup.imsi)-1); |
Neels Hofmeyr | 627de84 | 2016-12-19 13:16:06 +0100 | [diff] [blame] | 281 | |
| 282 | l = gsm48_encode_bcd_number(msisdn_enc, sizeof(msisdn_enc), 0, |
| 283 | luop->subscr.msisdn); |
| 284 | if (l < 1) { |
| 285 | LOGP(DMAIN, LOGL_ERROR, |
| 286 | "%s: Error: cannot encode MSISDN '%s'\n", |
| 287 | luop->subscr.imsi, luop->subscr.msisdn); |
| 288 | lu_op_tx_error(luop, GMM_CAUSE_PROTO_ERR_UNSPEC); |
| 289 | return; |
| 290 | } |
| 291 | gsup.msisdn_enc = msisdn_enc; |
| 292 | gsup.msisdn_enc_len = l; |
| 293 | |
Harald Welte | 9990927 | 2016-05-05 18:24:15 +0200 | [diff] [blame] | 294 | /* FIXME: deal with encoding the following data */ |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 295 | gsup.hlr_enc; |
| 296 | |
| 297 | if (luop->is_ps) { |
Max | 2fc63a6 | 2016-12-20 16:49:20 +0100 | [diff] [blame] | 298 | /* FIXME: PDP infos - use more fine-grained access control |
| 299 | instead of wildcard APN */ |
| 300 | l = osmo_apn_from_str(apn, sizeof(apn), "*"); |
| 301 | if (l > 0) { |
| 302 | gsup.pdp_infos[0].apn_enc = apn; |
| 303 | gsup.pdp_infos[0].apn_enc_len = l; |
| 304 | gsup.pdp_infos[0].have_info = 1; |
| 305 | gsup.num_pdp_infos = 1; |
| 306 | /* FIXME: use real value: */ |
| 307 | gsup.pdp_infos[0].context_id = 1; |
| 308 | } |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | /* Send ISD to new VLR/SGSN */ |
| 312 | _luop_tx_gsup(luop, &gsup); |
| 313 | |
| 314 | lu_op_statechg(luop, LU_S_ISD_SENT); |
| 315 | osmo_timer_schedule(&luop->timer, ISD_TIMEOUT_SECS, 0); |
| 316 | } |
| 317 | |
| 318 | /*! Receive Insert Subscriber Data Result from new VLR/SGSN */ |
| 319 | static void lu_op_rx_insert_subscr_data_ack(struct lu_operation *luop, |
| 320 | const struct osmo_gsup_message *gsup) |
| 321 | { |
| 322 | OSMO_ASSERT(luop->state == LU_S_ISD_SENT); |
| 323 | /* FIXME: Check for spoofing */ |
| 324 | |
| 325 | osmo_timer_del(&luop->timer); |
| 326 | |
| 327 | /* Subscriber_Present_HLR */ |
| 328 | /* CS only: Check_SS_required? -> MAP-FW-CHECK_SS_IND.req */ |
| 329 | |
| 330 | /* Send final ACK towards inquiring VLR/SGSN */ |
| 331 | lu_op_tx_ack(luop); |
| 332 | } |
| 333 | |
| 334 | /*! Receive GSUP message for given \ref lu_operation */ |
| 335 | void lu_op_rx_gsup(struct lu_operation *luop, |
| 336 | const struct osmo_gsup_message *gsup) |
| 337 | { |
| 338 | switch (gsup->message_type) { |
| 339 | case OSMO_GSUP_MSGT_INSERT_DATA_ERROR: |
| 340 | /* FIXME */ |
| 341 | break; |
| 342 | case OSMO_GSUP_MSGT_INSERT_DATA_RESULT: |
| 343 | lu_op_rx_insert_subscr_data_ack(luop, gsup); |
| 344 | break; |
| 345 | case OSMO_GSUP_MSGT_LOCATION_CANCEL_ERROR: |
| 346 | /* FIXME */ |
| 347 | break; |
| 348 | case OSMO_GSUP_MSGT_LOCATION_CANCEL_RESULT: |
| 349 | lu_op_rx_cancel_old_ack(luop, gsup); |
| 350 | break; |
| 351 | default: |
| 352 | LOGP(DMAIN, LOGL_ERROR, "Unhandled GSUP msg_type 0x%02x\n", |
| 353 | gsup->message_type); |
| 354 | break; |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | static struct lu_operation *lu_op_alloc(struct osmo_gsup_server *srv) |
| 359 | { |
| 360 | struct lu_operation *luop; |
| 361 | |
| 362 | luop = talloc_zero(srv, struct lu_operation); |
| 363 | OSMO_ASSERT(luop); |
| 364 | luop->gsup_server = srv; |
| 365 | luop->timer.cb = lu_op_timer_cb; |
| 366 | luop->timer.data = luop; |
| 367 | |
| 368 | return luop; |
| 369 | } |
| 370 | |
| 371 | /*! Receive Update Location Request, creates new \ref lu_operation */ |
| 372 | static int rx_upd_loc_req(struct osmo_gsup_conn *conn, |
| 373 | const struct osmo_gsup_message *gsup) |
| 374 | { |
| 375 | int rc; |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 376 | struct lu_operation *luop; |
| 377 | struct hlr_subscriber *subscr; |
| 378 | uint8_t *peer_addr; |
| 379 | |
| 380 | rc = osmo_gsup_conn_ccm_get(conn, &peer_addr, IPAC_IDTAG_SERNR); |
| 381 | if (rc < 0) { |
| 382 | LOGP(DMAIN, LOGL_ERROR, "LU REQ from conn without addr?\n"); |
| 383 | return rc; |
| 384 | } |
| 385 | |
| 386 | luop = lu_op_alloc(conn->server); |
| 387 | luop->peer = talloc_memdup(luop, peer_addr, rc); |
| 388 | lu_op_statechg(luop, LU_S_LU_RECEIVED); |
| 389 | subscr = &luop->subscr; |
| 390 | if (gsup->cn_domain == OSMO_GSUP_CN_DOMAIN_PS) |
| 391 | luop->is_ps = true; |
| 392 | llist_add(&luop->list, &g_lu_ops); |
| 393 | |
| 394 | /* Roughly follwing "Process Update_Location_HLR" of TS 09.02 */ |
| 395 | |
| 396 | /* check if subscriber is known at all */ |
| 397 | rc = db_subscr_get(g_dbc, gsup->imsi, subscr); |
| 398 | if (rc < 0) { |
| 399 | /* Send Error back: Subscriber Unknown in HLR */ |
| 400 | strcpy(luop->subscr.imsi, gsup->imsi); |
| 401 | lu_op_tx_error(luop, GMM_CAUSE_IMSI_UNKNOWN); |
| 402 | return 0; |
| 403 | } |
| 404 | |
Harald Welte | 9990927 | 2016-05-05 18:24:15 +0200 | [diff] [blame] | 405 | /* Check if subscriber is generally permitted on CS or PS |
| 406 | * service (as requested) */ |
Harald Welte | 53b8678 | 2016-05-05 21:04:11 +0200 | [diff] [blame] | 407 | if (!luop->is_ps && !subscr->nam_cs) { |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 408 | lu_op_tx_error(luop, GMM_CAUSE_PLMN_NOTALLOWED); |
| 409 | return 0; |
Harald Welte | 53b8678 | 2016-05-05 21:04:11 +0200 | [diff] [blame] | 410 | } else if (luop->is_ps && !subscr->nam_ps) { |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 411 | lu_op_tx_error(luop, GMM_CAUSE_GPRS_NOTALLOWED); |
| 412 | return 0; |
| 413 | } |
| 414 | |
| 415 | /* TODO: Set subscriber tracing = deactive in VLR/SGSN */ |
| 416 | |
| 417 | #if 0 |
| 418 | /* Cancel in old VLR/SGSN, if new VLR/SGSN differs from old */ |
| 419 | if (luop->is_ps == false && |
| 420 | strcmp(subscr->vlr_number, vlr_number)) { |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 421 | lu_op_tx_cancel_old(luop); |
| 422 | } else if (luop->is_ps == true && |
| 423 | strcmp(subscr->sgsn_number, sgsn_number)) { |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 424 | lu_op_tx_cancel_old(luop); |
| 425 | } else |
| 426 | #endif |
| 427 | { |
| 428 | /* TODO: Subscriber allowed to roam in PLMN? */ |
| 429 | /* TODO: Update RoutingInfo */ |
| 430 | /* TODO: Reset Flag MS Purged (cs/ps) */ |
| 431 | /* TODO: Control_Tracing_HLR / Control_Tracing_HLR_with_SGSN */ |
| 432 | lu_op_tx_insert_subscr_data(luop); |
| 433 | } |
| 434 | return 0; |
| 435 | } |
| 436 | |
Harald Welte | b18f0e0 | 2016-05-05 21:03:03 +0200 | [diff] [blame] | 437 | static int rx_purge_ms_req(struct osmo_gsup_conn *conn, |
| 438 | const struct osmo_gsup_message *gsup) |
| 439 | { |
| 440 | struct osmo_gsup_message gsup_reply = {0}; |
| 441 | struct msgb *msg_out; |
| 442 | bool is_ps = false; |
| 443 | int rc; |
| 444 | |
| 445 | LOGP(DAUC, LOGL_INFO, "%s: Purge MS (%s)\n", gsup->imsi, |
| 446 | is_ps ? "PS" : "CS"); |
| 447 | |
| 448 | memcpy(gsup_reply.imsi, gsup->imsi, sizeof(gsup_reply.imsi)); |
| 449 | |
| 450 | if (gsup->cn_domain == OSMO_GSUP_CN_DOMAIN_PS) |
| 451 | is_ps = true; |
| 452 | |
| 453 | /* FIXME: check if the VLR that sends the purge is the same that |
| 454 | * we have on record. Only update if yes */ |
| 455 | |
| 456 | /* Perform the actual update of the DB */ |
| 457 | rc = db_subscr_purge(g_dbc, gsup->imsi, is_ps); |
| 458 | |
| 459 | if (rc == 1) |
| 460 | gsup_reply.message_type = OSMO_GSUP_MSGT_PURGE_MS_RESULT; |
| 461 | else if (rc == 0) { |
| 462 | gsup_reply.message_type = OSMO_GSUP_MSGT_PURGE_MS_ERROR; |
| 463 | gsup_reply.cause = GMM_CAUSE_IMSI_UNKNOWN; |
| 464 | } else { |
| 465 | gsup_reply.message_type = OSMO_GSUP_MSGT_PURGE_MS_ERROR; |
| 466 | gsup_reply.cause = GMM_CAUSE_NET_FAIL; |
| 467 | } |
| 468 | |
| 469 | msg_out = msgb_alloc_headroom(1024+16, 16, "GSUP AUC response"); |
| 470 | osmo_gsup_encode(msg_out, &gsup_reply); |
| 471 | return osmo_gsup_conn_send(conn, msg_out); |
| 472 | } |
| 473 | |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 474 | static int read_cb(struct osmo_gsup_conn *conn, struct msgb *msg) |
| 475 | { |
| 476 | static struct osmo_gsup_message gsup; |
| 477 | int rc; |
| 478 | |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 479 | rc = osmo_gsup_decode(msgb_l2(msg), msgb_l2len(msg), &gsup); |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 480 | if (rc < 0) { |
| 481 | LOGP(DMAIN, LOGL_ERROR, "error in GSUP decode: %d\n", rc); |
| 482 | return rc; |
| 483 | } |
| 484 | |
| 485 | switch (gsup.message_type) { |
| 486 | /* requests sent to us */ |
| 487 | case OSMO_GSUP_MSGT_SEND_AUTH_INFO_REQUEST: |
| 488 | rx_send_auth_info(conn, &gsup); |
| 489 | break; |
| 490 | case OSMO_GSUP_MSGT_UPDATE_LOCATION_REQUEST: |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 491 | rx_upd_loc_req(conn, &gsup); |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 492 | break; |
Harald Welte | b18f0e0 | 2016-05-05 21:03:03 +0200 | [diff] [blame] | 493 | case OSMO_GSUP_MSGT_PURGE_MS_REQUEST: |
| 494 | rx_purge_ms_req(conn, &gsup); |
| 495 | break; |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 496 | /* responses to requests sent by us */ |
| 497 | case OSMO_GSUP_MSGT_INSERT_DATA_ERROR: |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 498 | case OSMO_GSUP_MSGT_INSERT_DATA_RESULT: |
Harald Welte | e687be5 | 2016-05-03 18:49:27 +0200 | [diff] [blame] | 499 | case OSMO_GSUP_MSGT_LOCATION_CANCEL_ERROR: |
| 500 | case OSMO_GSUP_MSGT_LOCATION_CANCEL_RESULT: |
| 501 | { |
| 502 | struct lu_operation *luop = lu_op_by_imsi(gsup.imsi); |
| 503 | if (!luop) { |
| 504 | LOGP(DMAIN, LOGL_ERROR, "GSUP message %u for " |
| 505 | "unknown IMSI %s\n", gsup.message_type, |
| 506 | gsup.imsi); |
| 507 | break; |
| 508 | } |
| 509 | lu_op_rx_gsup(luop, &gsup); |
| 510 | } |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 511 | break; |
| 512 | default: |
| 513 | LOGP(DMAIN, LOGL_DEBUG, "Unhandled GSUP message type %u\n", |
| 514 | gsup.message_type); |
| 515 | break; |
| 516 | } |
Harald Welte | 5341b5d | 2016-04-28 12:48:39 +0200 | [diff] [blame] | 517 | msgb_free(msg); |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 518 | return 0; |
| 519 | } |
| 520 | |
Neels Hofmeyr | 7f9491f | 2017-01-30 13:30:47 +0100 | [diff] [blame^] | 521 | static void print_usage() |
| 522 | { |
| 523 | printf("Usage: osmo-hlr\n"); |
| 524 | } |
| 525 | |
| 526 | static void print_help() |
| 527 | { |
| 528 | printf(" -h --help This text.\n"); |
| 529 | printf(" -l --database db-name The database to use.\n"); |
| 530 | printf(" -d option --debug=DRLL:DCC:DMM:DRR:DRSL:DNM Enable debugging.\n"); |
| 531 | printf(" -D --daemonize Fork the process into a background daemon.\n"); |
| 532 | printf(" -s --disable-color Do not print ANSI colors in the log\n"); |
| 533 | printf(" -T --timestamp Prefix every log line with a timestamp.\n"); |
| 534 | printf(" -e --log-level number Set a global loglevel.\n"); |
| 535 | } |
| 536 | |
| 537 | static struct { |
| 538 | const char *db_file; |
| 539 | bool daemonize; |
| 540 | } cmdline_opts = { |
| 541 | .db_file = "hlr.db", |
| 542 | .daemonize = false, |
| 543 | }; |
| 544 | |
| 545 | static void handle_options(int argc, char **argv) |
| 546 | { |
| 547 | while (1) { |
| 548 | int option_index = 0, c; |
| 549 | static struct option long_options[] = { |
| 550 | {"help", 0, 0, 'h'}, |
| 551 | {"database", 1, 0, 'l'}, |
| 552 | {"debug", 1, 0, 'd'}, |
| 553 | {"daemonize", 0, 0, 'D'}, |
| 554 | {"disable-color", 0, 0, 's'}, |
| 555 | {"log-level", 1, 0, 'e'}, |
| 556 | {"timestamp", 0, 0, 'T'}, |
| 557 | {0, 0, 0, 0} |
| 558 | }; |
| 559 | |
| 560 | c = getopt_long(argc, argv, "hl:d:Dse:T", |
| 561 | long_options, &option_index); |
| 562 | if (c == -1) |
| 563 | break; |
| 564 | |
| 565 | switch (c) { |
| 566 | case 'h': |
| 567 | print_usage(); |
| 568 | print_help(); |
| 569 | exit(0); |
| 570 | case 'l': |
| 571 | cmdline_opts.db_file = optarg; |
| 572 | break; |
| 573 | case 'd': |
| 574 | log_parse_category_mask(osmo_stderr_target, optarg); |
| 575 | break; |
| 576 | case 'D': |
| 577 | cmdline_opts.daemonize = 1; |
| 578 | break; |
| 579 | case 's': |
| 580 | log_set_use_color(osmo_stderr_target, 0); |
| 581 | break; |
| 582 | case 'e': |
| 583 | log_set_log_level(osmo_stderr_target, atoi(optarg)); |
| 584 | break; |
| 585 | case 'T': |
| 586 | log_set_print_timestamp(osmo_stderr_target, 1); |
| 587 | break; |
| 588 | default: |
| 589 | /* catch unknown options *as well as* missing arguments. */ |
| 590 | fprintf(stderr, "Error in command line options. Exiting.\n"); |
| 591 | exit(-1); |
| 592 | break; |
| 593 | } |
| 594 | } |
| 595 | } |
| 596 | |
Neels Hofmeyr | ca43e30 | 2017-01-30 13:18:23 +0100 | [diff] [blame] | 597 | static void *hlr_ctx = NULL; |
Harald Welte | aabae9e | 2016-04-28 12:48:14 +0200 | [diff] [blame] | 598 | static struct osmo_gsup_server *gs; |
| 599 | |
| 600 | static void signal_hdlr(int signal) |
| 601 | { |
| 602 | switch (signal) { |
| 603 | case SIGINT: |
| 604 | LOGP(DMAIN, LOGL_NOTICE, "Terminating due to SIGINT\n"); |
| 605 | osmo_gsup_server_destroy(gs); |
| 606 | db_close(g_dbc); |
| 607 | log_fini(); |
Neels Hofmeyr | ca43e30 | 2017-01-30 13:18:23 +0100 | [diff] [blame] | 608 | talloc_report_full(hlr_ctx, stderr); |
Harald Welte | aabae9e | 2016-04-28 12:48:14 +0200 | [diff] [blame] | 609 | exit(0); |
| 610 | break; |
| 611 | case SIGUSR1: |
| 612 | LOGP(DMAIN, LOGL_DEBUG, "Talloc Report due to SIGUSR1\n"); |
Neels Hofmeyr | ca43e30 | 2017-01-30 13:18:23 +0100 | [diff] [blame] | 613 | talloc_report_full(hlr_ctx, stderr); |
Harald Welte | aabae9e | 2016-04-28 12:48:14 +0200 | [diff] [blame] | 614 | break; |
| 615 | } |
| 616 | } |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 617 | |
| 618 | int main(int argc, char **argv) |
| 619 | { |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 620 | int rc; |
| 621 | |
Neels Hofmeyr | ca43e30 | 2017-01-30 13:18:23 +0100 | [diff] [blame] | 622 | hlr_ctx = talloc_named_const(NULL, 1, "OsmoHLR"); |
| 623 | msgb_talloc_ctx_init(hlr_ctx, 0); |
Harald Welte | aabae9e | 2016-04-28 12:48:14 +0200 | [diff] [blame] | 624 | |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 625 | rc = osmo_init_logging(&hlr_log_info); |
| 626 | if (rc < 0) { |
| 627 | fprintf(stderr, "Error initializing logging\n"); |
| 628 | exit(1); |
| 629 | } |
Neels Hofmeyr | 7f9491f | 2017-01-30 13:30:47 +0100 | [diff] [blame^] | 630 | |
| 631 | handle_options(argc, argv); |
| 632 | |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 633 | LOGP(DMAIN, LOGL_NOTICE, "hlr starting\n"); |
| 634 | |
| 635 | rc = rand_init(); |
| 636 | if (rc < 0) { |
| 637 | LOGP(DMAIN, LOGL_FATAL, "Error initializing random source\n"); |
| 638 | exit(1); |
| 639 | } |
| 640 | |
Neels Hofmeyr | 7f9491f | 2017-01-30 13:30:47 +0100 | [diff] [blame^] | 641 | g_dbc = db_open(hlr_ctx, cmdline_opts.db_file); |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 642 | if (!g_dbc) { |
| 643 | LOGP(DMAIN, LOGL_FATAL, "Error opening database\n"); |
| 644 | exit(1); |
| 645 | } |
| 646 | |
Neels Hofmeyr | ca43e30 | 2017-01-30 13:18:23 +0100 | [diff] [blame] | 647 | gs = osmo_gsup_server_create(hlr_ctx, NULL, 2222, read_cb); |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 648 | if (!gs) { |
| 649 | LOGP(DMAIN, LOGL_FATAL, "Error starting GSUP server\n"); |
| 650 | exit(1); |
| 651 | } |
| 652 | |
Harald Welte | aabae9e | 2016-04-28 12:48:14 +0200 | [diff] [blame] | 653 | osmo_init_ignore_signals(); |
| 654 | signal(SIGINT, &signal_hdlr); |
| 655 | signal(SIGUSR1, &signal_hdlr); |
| 656 | |
Neels Hofmeyr | 7f9491f | 2017-01-30 13:30:47 +0100 | [diff] [blame^] | 657 | if (cmdline_opts.daemonize) { |
| 658 | rc = osmo_daemonize(); |
| 659 | if (rc < 0) { |
| 660 | perror("Error during daemonize"); |
| 661 | exit(1); |
| 662 | } |
| 663 | } |
Harald Welte | aabae9e | 2016-04-28 12:48:14 +0200 | [diff] [blame] | 664 | |
Harald Welte | e72cf55 | 2016-04-28 07:18:49 +0200 | [diff] [blame] | 665 | while (1) { |
| 666 | osmo_select_main(0); |
| 667 | } |
| 668 | |
| 669 | db_close(g_dbc); |
| 670 | |
| 671 | log_fini(); |
| 672 | |
| 673 | exit(0); |
| 674 | } |