| /* Osmocom Visitor Location Register (VLR): Location Update FSMs */ |
| |
| /* (C) 2016 by Harald Welte <laforge@gnumonks.org> |
| * |
| * All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU Affero General Public License as published by |
| * the Free Software Foundation; either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU Affero General Public License for more details. |
| * |
| * You should have received a copy of the GNU Affero General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| */ |
| |
| #include <osmocom/core/fsm.h> |
| #include <osmocom/gsm/gsm48.h> |
| #include <osmocom/msc/vlr.h> |
| #include <osmocom/msc/debug.h> |
| |
| #include "vlr_core.h" |
| #include "vlr_auth_fsm.h" |
| #include "vlr_lu_fsm.h" |
| #include "vlr_sgs_fsm.h" |
| |
| #define S(x) (1 << (x)) |
| |
| #define LU_TIMEOUT_LONG 30 |
| |
| enum vlr_fsm_result { |
| VLR_FSM_RESULT_NONE, |
| VLR_FSM_RESULT_SUCCESS, |
| VLR_FSM_RESULT_FAILURE, |
| }; |
| |
| |
| /*********************************************************************** |
| * Update_HLR_VLR, TS 23.012 Chapter 4.1.2.4 |
| ***********************************************************************/ |
| |
| enum upd_hlr_vlr_state { |
| UPD_HLR_VLR_S_INIT, |
| UPD_HLR_VLR_S_WAIT_FOR_DATA, |
| UPD_HLR_VLR_S_DONE, |
| }; |
| |
| enum upd_hlr_vlr_evt { |
| UPD_HLR_VLR_E_START, |
| UPD_HLR_VLR_E_INS_SUB_DATA, |
| UPD_HLR_VLR_E_ACT_TRACE_MODE, |
| UPD_HLR_VLR_E_FW_CHECK_SS_IND, |
| UPD_HLR_VLR_E_UPD_LOC_ACK, |
| UPD_HLR_VLR_E_UPD_LOC_NACK, |
| }; |
| |
| static const struct value_string upd_hlr_vlr_event_names[] = { |
| OSMO_VALUE_STRING(UPD_HLR_VLR_E_START), |
| OSMO_VALUE_STRING(UPD_HLR_VLR_E_INS_SUB_DATA), |
| OSMO_VALUE_STRING(UPD_HLR_VLR_E_ACT_TRACE_MODE), |
| OSMO_VALUE_STRING(UPD_HLR_VLR_E_FW_CHECK_SS_IND), |
| OSMO_VALUE_STRING(UPD_HLR_VLR_E_UPD_LOC_ACK), |
| OSMO_VALUE_STRING(UPD_HLR_VLR_E_UPD_LOC_NACK), |
| { 0, NULL } |
| }; |
| |
| static inline struct vlr_subscr *upd_hlr_vlr_fi_priv(struct osmo_fsm_inst *fi); |
| |
| static void upd_hlr_vlr_fsm_init(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| struct vlr_subscr *vsub = upd_hlr_vlr_fi_priv(fi); |
| int rc; |
| |
| OSMO_ASSERT(event == UPD_HLR_VLR_E_START); |
| |
| /* Send UpdateLocation to HLR */ |
| rc = vlr_subscr_req_lu(vsub); |
| if (rc < 0) |
| LOGPFSML(fi, LOGL_ERROR, "Failed to send UpdateLocation to HLR\n"); |
| osmo_fsm_inst_state_chg(fi, UPD_HLR_VLR_S_WAIT_FOR_DATA, |
| LU_TIMEOUT_LONG, 0); |
| } |
| |
| static void upd_hlr_vlr_fsm_wait_data(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| struct vlr_subscr *vsub = upd_hlr_vlr_fi_priv(fi); |
| |
| switch (event) { |
| case UPD_HLR_VLR_E_INS_SUB_DATA: |
| /* FIXME: Insert_Subscr_Data_VLR */ |
| break; |
| case UPD_HLR_VLR_E_ACT_TRACE_MODE: |
| /* TODO: Activate_Tracing_VLR */ |
| break; |
| case UPD_HLR_VLR_E_FW_CHECK_SS_IND: |
| /* TODO: Forward Check SS Ind to MSC */ |
| break; |
| case UPD_HLR_VLR_E_UPD_LOC_ACK: |
| /* Inside Update_HLR_VLR after UpdateLocationAck */ |
| vsub->sub_dataconf_by_hlr_ind = true; |
| vsub->loc_conf_in_hlr_ind = true; |
| osmo_fsm_inst_state_chg(fi, UPD_HLR_VLR_S_DONE, 0, 0); |
| osmo_fsm_inst_term(fi, OSMO_FSM_TERM_REGULAR, NULL); |
| break; |
| case UPD_HLR_VLR_E_UPD_LOC_NACK: |
| /* Inside Update_HLR_VLR after UpdateLocationNack */ |
| /* TODO: Check_User_Error_In_Serving_Network_Entity */ |
| vsub->sub_dataconf_by_hlr_ind = false; |
| vsub->loc_conf_in_hlr_ind = false; |
| osmo_fsm_inst_state_chg(fi, UPD_HLR_VLR_S_DONE, 0, 0); |
| /* Data is a pointer to a gsm48_gmm_cause which we |
| * simply pass through */ |
| osmo_fsm_inst_term(fi, OSMO_FSM_TERM_REGULAR, data); |
| break; |
| } |
| } |
| |
| static const struct osmo_fsm_state upd_hlr_vlr_states[] = { |
| [UPD_HLR_VLR_S_INIT] = { |
| .in_event_mask = S(UPD_HLR_VLR_E_START), |
| .out_state_mask = S(UPD_HLR_VLR_S_WAIT_FOR_DATA), |
| .name = OSMO_STRINGIFY(UPD_HLR_VLR_S_INIT), |
| .action = upd_hlr_vlr_fsm_init, |
| }, |
| [UPD_HLR_VLR_S_WAIT_FOR_DATA] = { |
| .in_event_mask = S(UPD_HLR_VLR_E_INS_SUB_DATA) | |
| S(UPD_HLR_VLR_E_ACT_TRACE_MODE) | |
| S(UPD_HLR_VLR_E_FW_CHECK_SS_IND) | |
| S(UPD_HLR_VLR_E_UPD_LOC_ACK) | |
| S(UPD_HLR_VLR_E_UPD_LOC_NACK), |
| .out_state_mask = S(UPD_HLR_VLR_S_DONE), |
| .name = OSMO_STRINGIFY(UPD_HLR_VLR_S_WAIT_FOR_DATA), |
| .action = upd_hlr_vlr_fsm_wait_data, |
| }, |
| [UPD_HLR_VLR_S_DONE] = { |
| .name = OSMO_STRINGIFY(UPD_HLR_VLR_S_DONE), |
| }, |
| }; |
| |
| static struct osmo_fsm upd_hlr_vlr_fsm = { |
| .name = "upd_hlr_vlr_fsm", |
| .states = upd_hlr_vlr_states, |
| .num_states = ARRAY_SIZE(upd_hlr_vlr_states), |
| .allstate_event_mask = 0, |
| .allstate_action = NULL, |
| .log_subsys = DVLR, |
| .event_names = upd_hlr_vlr_event_names, |
| }; |
| |
| static inline struct vlr_subscr *upd_hlr_vlr_fi_priv(struct osmo_fsm_inst *fi) |
| { |
| OSMO_ASSERT(fi->fsm == &upd_hlr_vlr_fsm); |
| return (struct vlr_subscr*)fi->priv; |
| } |
| |
| struct osmo_fsm_inst * |
| upd_hlr_vlr_proc_start(struct osmo_fsm_inst *parent, |
| struct vlr_subscr *vsub, |
| uint32_t parent_event) |
| { |
| struct osmo_fsm_inst *fi; |
| |
| fi = osmo_fsm_inst_alloc_child(&upd_hlr_vlr_fsm, parent, |
| parent_event); |
| if (!fi) |
| return NULL; |
| |
| fi->priv = vsub; |
| osmo_fsm_inst_dispatch(fi, UPD_HLR_VLR_E_START, NULL); |
| |
| return fi; |
| } |
| |
| |
| /*********************************************************************** |
| * Subscriber_Present_VLR, TS 29.002 Chapter 25.10.1 |
| ***********************************************************************/ |
| |
| enum sub_pres_vlr_state { |
| SUB_PRES_VLR_S_INIT, |
| SUB_PRES_VLR_S_WAIT_FOR_HLR, |
| SUB_PRES_VLR_S_DONE, |
| }; |
| |
| enum sub_pres_vlr_event { |
| SUB_PRES_VLR_E_START, |
| SUB_PRES_VLR_E_READY_SM_CNF, |
| SUB_PRES_VLR_E_READY_SM_ERR, |
| }; |
| |
| static const struct value_string sub_pres_vlr_event_names[] = { |
| OSMO_VALUE_STRING(SUB_PRES_VLR_E_START), |
| OSMO_VALUE_STRING(SUB_PRES_VLR_E_READY_SM_CNF), |
| OSMO_VALUE_STRING(SUB_PRES_VLR_E_READY_SM_ERR), |
| { 0, NULL } |
| }; |
| |
| static inline struct vlr_subscr *sub_pres_vlr_fi_priv(struct osmo_fsm_inst *fi); |
| |
| static void sub_pres_vlr_fsm_init(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| struct vlr_subscr *vsub = sub_pres_vlr_fi_priv(fi); |
| OSMO_ASSERT(event == SUB_PRES_VLR_E_START); |
| |
| if (!vsub->ms_not_reachable_flag) { |
| osmo_fsm_inst_state_chg(fi, SUB_PRES_VLR_S_DONE, 0, 0); |
| osmo_fsm_inst_term(fi, OSMO_FSM_TERM_REGULAR, NULL); |
| return; |
| } |
| /* FIXME: Send READY_FOR_SM via GSUP */ |
| osmo_fsm_inst_state_chg(fi, SUB_PRES_VLR_S_WAIT_FOR_HLR, |
| LU_TIMEOUT_LONG, 0); |
| } |
| |
| static void sub_pres_vlr_fsm_wait_hlr(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| struct vlr_subscr *vsub = sub_pres_vlr_fi_priv(fi); |
| |
| switch (event) { |
| case SUB_PRES_VLR_E_READY_SM_CNF: |
| vsub->ms_not_reachable_flag = false; |
| break; |
| case SUB_PRES_VLR_E_READY_SM_ERR: |
| break; |
| } |
| osmo_fsm_inst_state_chg(fi, SUB_PRES_VLR_S_DONE, 0, 0); |
| osmo_fsm_inst_term(fi, OSMO_FSM_TERM_REGULAR, NULL); |
| } |
| |
| static const struct osmo_fsm_state sub_pres_vlr_states[] = { |
| [SUB_PRES_VLR_S_INIT] = { |
| .in_event_mask = S(SUB_PRES_VLR_E_START), |
| .out_state_mask = S(SUB_PRES_VLR_S_WAIT_FOR_HLR) | |
| S(SUB_PRES_VLR_S_DONE), |
| .name = OSMO_STRINGIFY(SUB_PRES_VLR_S_INIT), |
| .action = sub_pres_vlr_fsm_init, |
| }, |
| [SUB_PRES_VLR_S_WAIT_FOR_HLR] = { |
| .in_event_mask = S(SUB_PRES_VLR_E_READY_SM_CNF) | |
| S(SUB_PRES_VLR_E_READY_SM_ERR), |
| .out_state_mask = S(SUB_PRES_VLR_S_DONE), |
| .name = OSMO_STRINGIFY(SUB_PRES_VLR_S_WAIT_FOR_HLR), |
| .action = sub_pres_vlr_fsm_wait_hlr, |
| }, |
| [SUB_PRES_VLR_S_DONE] = { |
| .name = OSMO_STRINGIFY(SUB_PRES_VLR_S_DONE), |
| }, |
| }; |
| |
| static struct osmo_fsm sub_pres_vlr_fsm = { |
| .name = "sub_pres_vlr_fsm", |
| .states = sub_pres_vlr_states, |
| .num_states = ARRAY_SIZE(sub_pres_vlr_states), |
| .allstate_event_mask = 0, |
| .allstate_action = NULL, |
| .log_subsys = DVLR, |
| .event_names = sub_pres_vlr_event_names, |
| }; |
| |
| static inline struct vlr_subscr *sub_pres_vlr_fi_priv(struct osmo_fsm_inst *fi) |
| { |
| OSMO_ASSERT(fi->fsm == &sub_pres_vlr_fsm); |
| return (struct vlr_subscr*)fi->priv; |
| } |
| |
| /* THIS IS CURRENTLY DEAD CODE, SINCE WE NEVER SET vsub->ms_not_reachable_flag = true. |
| * |
| * Note that the start event is dispatched right away, so in case the FSM immediately concludes from that |
| * event, the created FSM struct may no longer be valid as it already deallocated again, and it may |
| * furthermore already have invoked the parent FSM instance's deallocation as well. Hence, instead of |
| * returning, store the created FSM instance address in *fi_p before dispatching the event. It is thus |
| * possible to store the instance's pointer in a parent FSM instance without running danger of using |
| * already freed memory. */ |
| void sub_pres_vlr_fsm_start(struct osmo_fsm_inst **fi_p, |
| struct osmo_fsm_inst *parent, |
| struct vlr_subscr *vsub, |
| uint32_t term_event) |
| { |
| struct osmo_fsm_inst *fi; |
| |
| OSMO_ASSERT(fi_p); |
| |
| fi = osmo_fsm_inst_alloc_child(&sub_pres_vlr_fsm, parent, |
| term_event); |
| *fi_p = fi; |
| if (!fi) |
| return; |
| |
| fi->priv = vsub; |
| osmo_fsm_inst_dispatch(fi, SUB_PRES_VLR_E_START, NULL); |
| } |
| |
| /*********************************************************************** |
| * Location_Update_Completion_VLR, TS 23.012 Chapter 4.1.2.3 |
| ***********************************************************************/ |
| |
| enum lu_compl_vlr_state { |
| LU_COMPL_VLR_S_INIT, |
| LU_COMPL_VLR_S_WAIT_SUB_PRES, |
| LU_COMPL_VLR_S_WAIT_IMEI, |
| LU_COMPL_VLR_S_WAIT_IMEI_TMSI, |
| LU_COMPL_VLR_S_WAIT_TMSI_CNF, |
| LU_COMPL_VLR_S_DONE, |
| }; |
| |
| enum lu_compl_vlr_event { |
| LU_COMPL_VLR_E_START, |
| LU_COMPL_VLR_E_SUB_PRES_COMPL, |
| LU_COMPL_VLR_E_IMEI_CHECK_ACK, |
| LU_COMPL_VLR_E_IMEI_CHECK_NACK, |
| LU_COMPL_VLR_E_NEW_TMSI_ACK, |
| }; |
| |
| static const struct value_string lu_compl_vlr_event_names[] = { |
| OSMO_VALUE_STRING(LU_COMPL_VLR_E_START), |
| OSMO_VALUE_STRING(LU_COMPL_VLR_E_SUB_PRES_COMPL), |
| OSMO_VALUE_STRING(LU_COMPL_VLR_E_IMEI_CHECK_ACK), |
| OSMO_VALUE_STRING(LU_COMPL_VLR_E_IMEI_CHECK_NACK), |
| OSMO_VALUE_STRING(LU_COMPL_VLR_E_NEW_TMSI_ACK), |
| { 0, NULL } |
| }; |
| |
| struct lu_compl_vlr_priv { |
| struct vlr_subscr *vsub; |
| void *msc_conn_ref; |
| struct osmo_fsm_inst *sub_pres_vlr_fsm; |
| uint32_t parent_event_success; |
| uint32_t parent_event_failure; |
| void *parent_event_data; |
| enum vlr_fsm_result result; |
| uint8_t cause; |
| bool assign_tmsi; |
| }; |
| |
| static inline struct lu_compl_vlr_priv *lu_compl_vlr_fi_priv(struct osmo_fsm_inst *fi); |
| |
| static void _vlr_lu_compl_fsm_done(struct osmo_fsm_inst *fi, |
| enum vlr_fsm_result result, |
| uint8_t cause) |
| { |
| struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
| lcvp->result = result; |
| lcvp->cause = cause; |
| osmo_fsm_inst_state_chg(fi, LU_COMPL_VLR_S_DONE, 0, 0); |
| } |
| |
| static void vlr_lu_compl_fsm_success(struct osmo_fsm_inst *fi) |
| { |
| struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
| struct vlr_subscr *vsub = lcvp->vsub; |
| if (!vsub->lu_complete) { |
| vsub->lu_complete = true; |
| /* Balanced by vlr_subscr_expire() */ |
| vlr_subscr_get(vsub, VSUB_USE_ATTACHED); |
| } |
| _vlr_lu_compl_fsm_done(fi, VLR_FSM_RESULT_SUCCESS, 0); |
| vlr_sgs_fsm_update_id(vsub); |
| } |
| |
| static void vlr_lu_compl_fsm_dispatch_result(struct osmo_fsm_inst *fi, |
| uint32_t prev_state) |
| { |
| struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
| if (!fi->proc.parent) { |
| LOGPFSML(fi, LOGL_ERROR, "No parent FSM\n"); |
| return; |
| } |
| osmo_fsm_inst_dispatch(fi->proc.parent, |
| (lcvp->result == VLR_FSM_RESULT_SUCCESS) |
| ? lcvp->parent_event_success |
| : lcvp->parent_event_failure, |
| &lcvp->cause); |
| } |
| |
| static void lu_compl_vlr_init(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
| struct vlr_subscr *vsub = lcvp->vsub; |
| struct vlr_instance *vlr; |
| OSMO_ASSERT(vsub); |
| vlr = vsub->vlr; |
| OSMO_ASSERT(vlr); |
| |
| OSMO_ASSERT(event == LU_COMPL_VLR_E_START); |
| |
| /* TODO: National Roaming restrictions? */ |
| /* TODO: Roaming restriction due to unsupported feature in subscriber |
| * data? */ |
| /* TODO: Regional subscription restriction? */ |
| /* TODO: Administrative restriction of subscribres' access feature? */ |
| /* TODO: AccessRestrictuionData parameter available? */ |
| /* TODO: AccessRestrictionData permits RAT? */ |
| /* Node 1 */ |
| /* TODO: Autonomous CSG supported in VPLMN and allowed by HPLMN? */ |
| /* TODO: Hybrid Cel / CSG Cell */ |
| /* Node 2 */ |
| vsub->la_allowed = true; |
| vsub->imsi_detached_flag = false; |
| /* Start Subscriber_Present_VLR Procedure */ |
| osmo_fsm_inst_state_chg(fi, LU_COMPL_VLR_S_WAIT_SUB_PRES, |
| LU_TIMEOUT_LONG, 0); |
| |
| /* If ms_not_reachable_flag == false, the sub_pres_vlr_fsm will anyway terminate straight away and dispatch |
| * LU_COMPL_VLR_E_SUB_PRES_COMPL to this fi, so we might as well skip that dance here and save some logging. */ |
| if (vsub->ms_not_reachable_flag) |
| sub_pres_vlr_fsm_start(&lcvp->sub_pres_vlr_fsm, fi, vsub, LU_COMPL_VLR_E_SUB_PRES_COMPL); |
| else |
| osmo_fsm_inst_dispatch(fi, LU_COMPL_VLR_E_SUB_PRES_COMPL, NULL); |
| } |
| |
| static void lu_compl_vlr_new_tmsi(struct osmo_fsm_inst *fi) |
| { |
| struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
| struct vlr_subscr *vsub = lcvp->vsub; |
| struct vlr_instance *vlr = vsub->vlr; |
| |
| LOGPFSM(fi, "%s()\n", __func__); |
| |
| if (vlr_subscr_alloc_tmsi(vsub)) { |
| _vlr_lu_compl_fsm_done(fi, VLR_FSM_RESULT_FAILURE, GSM48_REJECT_SRV_OPT_TMP_OUT_OF_ORDER); |
| return; |
| } |
| |
| osmo_fsm_inst_state_chg(fi, LU_COMPL_VLR_S_WAIT_TMSI_CNF, |
| vlr_timer(vlr, 3250), 3250); |
| |
| vlr->ops.tx_lu_acc(lcvp->msc_conn_ref, vsub->tmsi_new); |
| } |
| |
| /* After completion of Subscriber_Present_VLR */ |
| static void lu_compl_vlr_wait_subscr_pres(struct osmo_fsm_inst *fi, |
| uint32_t event, |
| void *data) |
| { |
| struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
| struct vlr_subscr *vsub = lcvp->vsub; |
| struct vlr_instance *vlr = vsub->vlr; |
| |
| OSMO_ASSERT(event == LU_COMPL_VLR_E_SUB_PRES_COMPL); |
| |
| lcvp->sub_pres_vlr_fsm = NULL; |
| |
| /* TODO: Trace_Subscriber_Activity_VLR */ |
| |
| /* If imeisv_early is enabled: IMEI already retrieved and checked (vlr_loc_upd_node1_pre), don't do it again. */ |
| if (vlr->cfg.check_imei_rqd && !vlr->cfg.retrieve_imeisv_early) { |
| /* Check IMEI VLR */ |
| osmo_fsm_inst_state_chg(fi, |
| lcvp->assign_tmsi ? |
| LU_COMPL_VLR_S_WAIT_IMEI_TMSI |
| : LU_COMPL_VLR_S_WAIT_IMEI, |
| vlr_timer(vlr, 3270), 3270); |
| vlr->ops.tx_id_req(lcvp->msc_conn_ref, GSM_MI_TYPE_IMEI); |
| return; |
| } |
| |
| /* Do we need to allocate a TMSI? */ |
| if (lcvp->assign_tmsi) { |
| lu_compl_vlr_new_tmsi(fi); |
| return; |
| } |
| |
| /* Location Updating Accept */ |
| vlr->ops.tx_lu_acc(lcvp->msc_conn_ref, GSM_RESERVED_TMSI); |
| vlr_lu_compl_fsm_success(fi); |
| } |
| |
| /* Waiting for completion of CHECK_IMEI_VLR */ |
| static void lu_compl_vlr_wait_imei(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
| struct vlr_subscr *vsub = lcvp->vsub; |
| struct vlr_instance *vlr = vsub->vlr; |
| |
| switch (event) { |
| case LU_COMPL_VLR_E_IMEI_CHECK_ACK: |
| if (!vsub->imei[0]) { |
| /* Abort: Do nothing */ |
| _vlr_lu_compl_fsm_done(fi, VLR_FSM_RESULT_FAILURE, GSM48_REJECT_PROTOCOL_ERROR); |
| return; |
| } |
| /* Pass */ |
| break; |
| |
| case LU_COMPL_VLR_E_IMEI_CHECK_NACK: |
| _vlr_lu_compl_fsm_done(fi, VLR_FSM_RESULT_FAILURE, GSM48_REJECT_ILLEGAL_ME); |
| /* FIXME: IMEI Check Fail to VLR Application (Detach IMSI VLR) */ |
| return; |
| } |
| |
| /* IMEI is available. Allocate TMSI if needed. */ |
| if (lcvp->assign_tmsi) { |
| if (fi->state != LU_COMPL_VLR_S_WAIT_IMEI_TMSI) |
| LOGPFSML(fi, LOGL_ERROR, |
| "TMSI required, expected to be in state" |
| " LU_COMPL_VLR_S_WAIT_IMEI_TMSI," |
| " am in %s instead\n", |
| osmo_fsm_state_name(fi->fsm, fi->state)); |
| /* Logged an error, continue anyway. */ |
| |
| lu_compl_vlr_new_tmsi(fi); |
| |
| /* Wait for TMSI ack */ |
| return; |
| } |
| |
| /* No TMSI needed, accept now. */ |
| vlr->ops.tx_lu_acc(lcvp->msc_conn_ref, GSM_RESERVED_TMSI); |
| vlr_lu_compl_fsm_success(fi); |
| } |
| |
| static inline struct lu_compl_vlr_priv *lu_compl_vlr_fi_priv(struct osmo_fsm_inst *fi); |
| |
| /* Waiting for TMSI confirmation */ |
| static void lu_compl_vlr_wait_tmsi(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| struct lu_compl_vlr_priv *lcvp = lu_compl_vlr_fi_priv(fi); |
| struct vlr_subscr *vsub = lcvp->vsub; |
| |
| OSMO_ASSERT(event == LU_COMPL_VLR_E_NEW_TMSI_ACK); |
| |
| if (!vsub || vsub->tmsi_new == GSM_RESERVED_TMSI) { |
| LOGPFSML(fi, LOGL_ERROR, "TMSI Realloc Compl implies that" |
| " the subscriber has a new TMSI allocated, but" |
| " the new TMSI is unset.\n"); |
| _vlr_lu_compl_fsm_done(fi, VLR_FSM_RESULT_FAILURE, GSM48_REJECT_NETWORK_FAILURE); |
| return; |
| } |
| |
| vsub->tmsi = vsub->tmsi_new; |
| vsub->tmsi_new = GSM_RESERVED_TMSI; |
| vsub->vlr->ops.subscr_update(vsub); |
| |
| vlr_lu_compl_fsm_success(fi); |
| } |
| |
| static const struct osmo_fsm_state lu_compl_vlr_states[] = { |
| [LU_COMPL_VLR_S_INIT] = { |
| .in_event_mask = S(LU_COMPL_VLR_E_START), |
| .out_state_mask = S(LU_COMPL_VLR_S_DONE) | |
| S(LU_COMPL_VLR_S_WAIT_SUB_PRES), |
| .name = OSMO_STRINGIFY(LU_COMPL_VLR_S_INIT), |
| .action = lu_compl_vlr_init, |
| }, |
| [LU_COMPL_VLR_S_WAIT_SUB_PRES] = { |
| .in_event_mask = S(LU_COMPL_VLR_E_SUB_PRES_COMPL), |
| .out_state_mask = S(LU_COMPL_VLR_S_WAIT_IMEI) | |
| S(LU_COMPL_VLR_S_WAIT_IMEI_TMSI) | |
| S(LU_COMPL_VLR_S_WAIT_TMSI_CNF) | |
| S(LU_COMPL_VLR_S_DONE), |
| .name = OSMO_STRINGIFY(LU_COMPL_VLR_S_WAIT_SUB_PRES), |
| .action = lu_compl_vlr_wait_subscr_pres, |
| }, |
| [LU_COMPL_VLR_S_WAIT_IMEI] = { |
| .in_event_mask = S(LU_COMPL_VLR_E_IMEI_CHECK_ACK) | |
| S(LU_COMPL_VLR_E_IMEI_CHECK_NACK), |
| .out_state_mask = S(LU_COMPL_VLR_S_DONE), |
| .name = OSMO_STRINGIFY(LU_COMPL_VLR_S_WAIT_IMEI), |
| .action = lu_compl_vlr_wait_imei, |
| }, |
| [LU_COMPL_VLR_S_WAIT_IMEI_TMSI] = { |
| .in_event_mask = S(LU_COMPL_VLR_E_IMEI_CHECK_ACK) | |
| S(LU_COMPL_VLR_E_IMEI_CHECK_NACK), |
| .out_state_mask = S(LU_COMPL_VLR_S_DONE) | |
| S(LU_COMPL_VLR_S_WAIT_TMSI_CNF), |
| .name = OSMO_STRINGIFY(LU_COMPL_VLR_S_WAIT_IMEI_TMSI), |
| .action = lu_compl_vlr_wait_imei, |
| }, |
| [LU_COMPL_VLR_S_WAIT_TMSI_CNF] = { |
| .in_event_mask = S(LU_COMPL_VLR_E_NEW_TMSI_ACK), |
| .out_state_mask = S(LU_COMPL_VLR_S_DONE), |
| .name = OSMO_STRINGIFY(LU_COMPL_VLR_S_WAIT_TMSI_CNF), |
| .action = lu_compl_vlr_wait_tmsi, |
| }, |
| [LU_COMPL_VLR_S_DONE] = { |
| .name = OSMO_STRINGIFY(LU_COMPL_VLR_S_DONE), |
| .onenter = vlr_lu_compl_fsm_dispatch_result, |
| }, |
| }; |
| |
| static struct osmo_fsm lu_compl_vlr_fsm = { |
| .name = "lu_compl_vlr_fsm", |
| .states = lu_compl_vlr_states, |
| .num_states = ARRAY_SIZE(lu_compl_vlr_states), |
| .allstate_event_mask = 0, |
| .allstate_action = NULL, |
| .log_subsys = DVLR, |
| .event_names = lu_compl_vlr_event_names, |
| }; |
| |
| static inline struct lu_compl_vlr_priv *lu_compl_vlr_fi_priv(struct osmo_fsm_inst *fi) |
| { |
| OSMO_ASSERT(fi->fsm == &lu_compl_vlr_fsm); |
| return (struct lu_compl_vlr_priv*)fi->priv; |
| } |
| |
| struct osmo_fsm_inst * |
| lu_compl_vlr_proc_alloc(struct osmo_fsm_inst *parent, |
| struct vlr_subscr *vsub, |
| void *msc_conn_ref, |
| uint32_t parent_event_success, |
| uint32_t parent_event_failure, |
| bool assign_tmsi) |
| { |
| struct osmo_fsm_inst *fi; |
| struct lu_compl_vlr_priv *lcvp; |
| |
| fi = osmo_fsm_inst_alloc_child(&lu_compl_vlr_fsm, parent, |
| parent_event_failure); |
| if (!fi) |
| return NULL; |
| |
| lcvp = talloc_zero(fi, struct lu_compl_vlr_priv); |
| lcvp->vsub = vsub; |
| lcvp->msc_conn_ref = msc_conn_ref; |
| lcvp->parent_event_success = parent_event_success; |
| lcvp->parent_event_failure = parent_event_failure; |
| lcvp->assign_tmsi = assign_tmsi; |
| fi->priv = lcvp; |
| |
| return fi; |
| } |
| |
| |
| /*********************************************************************** |
| * Update_Location_Area_VLR, TS 23.012 Chapter 4.1.2.1 |
| ***********************************************************************/ |
| |
| static const struct value_string fsm_lu_event_names[] = { |
| OSMO_VALUE_STRING(VLR_ULA_E_UPDATE_LA), |
| OSMO_VALUE_STRING(VLR_ULA_E_SEND_ID_ACK), |
| OSMO_VALUE_STRING(VLR_ULA_E_SEND_ID_NACK), |
| OSMO_VALUE_STRING(VLR_ULA_E_AUTH_SUCCESS), |
| OSMO_VALUE_STRING(VLR_ULA_E_AUTH_NO_INFO), |
| OSMO_VALUE_STRING(VLR_ULA_E_AUTH_FAILURE), |
| OSMO_VALUE_STRING(VLR_ULA_E_CIPH_RES), |
| OSMO_VALUE_STRING(VLR_ULA_E_ID_IMSI), |
| OSMO_VALUE_STRING(VLR_ULA_E_ID_IMEI), |
| OSMO_VALUE_STRING(VLR_ULA_E_ID_IMEISV), |
| OSMO_VALUE_STRING(VLR_ULA_E_HLR_IMEI_ACK), |
| OSMO_VALUE_STRING(VLR_ULA_E_HLR_IMEI_NACK), |
| OSMO_VALUE_STRING(VLR_ULA_E_HLR_LU_RES), |
| OSMO_VALUE_STRING(VLR_ULA_E_UPD_HLR_COMPL), |
| OSMO_VALUE_STRING(VLR_ULA_E_LU_COMPL_SUCCESS), |
| OSMO_VALUE_STRING(VLR_ULA_E_LU_COMPL_FAILURE), |
| OSMO_VALUE_STRING(VLR_ULA_E_NEW_TMSI_ACK), |
| { 0, NULL } |
| }; |
| |
| struct lu_fsm_priv { |
| struct vlr_instance *vlr; |
| struct vlr_subscr *vsub; |
| void *msc_conn_ref; |
| struct osmo_fsm_inst *upd_hlr_vlr_fsm; |
| struct osmo_fsm_inst *lu_compl_vlr_fsm; |
| uint32_t parent_event_success; |
| uint32_t parent_event_failure; |
| void *parent_event_data; |
| enum vlr_fsm_result result; |
| uint8_t rej_cause; |
| |
| enum vlr_lu_type type; |
| bool lu_by_tmsi; |
| char imsi[16]; |
| uint32_t tmsi; |
| struct osmo_location_area_id old_lai; |
| struct osmo_location_area_id new_lai; |
| bool authentication_required; |
| /* is_ciphering_to_be_attempted: true when any A5/n > 0 are enabled. Ciphering is allowed, always attempt to get Auth Info from |
| * the HLR. */ |
| bool is_ciphering_to_be_attempted; |
| /* is_ciphering_required: true when A5/0 is disabled. If we cannot get Auth Info from the HLR, reject the |
| * subscriber. */ |
| bool is_ciphering_required; |
| uint8_t key_seq; |
| bool is_r99; |
| bool is_utran; |
| bool assign_tmsi; |
| }; |
| |
| |
| /* Determine if given location area is served by this VLR */ |
| static bool lai_in_this_vlr(struct vlr_instance *vlr, |
| const struct osmo_location_area_id *lai) |
| { |
| /* TODO: VLR needs to keep a locally configured list of LAIs */ |
| return true; |
| } |
| |
| /* Return true when authentication should be attempted. */ |
| static bool try_auth(struct lu_fsm_priv *lfp) |
| { |
| /* The cases where the authentication procedure should be used |
| * are defined in 3GPP TS 33.102 */ |
| /* For now we use a default value passed in to vlr_lu_fsm(). */ |
| return lfp->authentication_required || |
| (lfp->is_ciphering_to_be_attempted && !auth_try_reuse_tuple(lfp->vsub, lfp->key_seq)); |
| } |
| |
| /* Return true when CipherModeCmd / SecurityModeCmd should be attempted. */ |
| static bool is_cmc_smc_to_be_attempted(struct lu_fsm_priv *lfp) |
| { |
| /* UTRAN: always send SecModeCmd, even if ciphering is not required. |
| * GERAN: avoid sending CiphModeCmd if ciphering is not required. */ |
| return lfp->is_utran || lfp->is_ciphering_to_be_attempted; |
| } |
| |
| /* Determine if a HLR Update is required */ |
| static bool hlr_update_needed(struct vlr_subscr *vsub) |
| { |
| /* TODO: properly decide this, rather than always assuming we |
| * need to update the HLR. */ |
| return true; |
| } |
| |
| static inline struct lu_fsm_priv *lu_fsm_fi_priv(struct osmo_fsm_inst *fi); |
| |
| static void lu_fsm_dispatch_result(struct osmo_fsm_inst *fi, |
| uint32_t prev_state) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| if (!fi->proc.parent) { |
| LOGPFSML(fi, LOGL_ERROR, "No parent FSM\n"); |
| return; |
| } |
| osmo_fsm_inst_dispatch(fi->proc.parent, |
| (lfp->result == VLR_FSM_RESULT_SUCCESS) |
| ? lfp->parent_event_success |
| : lfp->parent_event_failure, |
| lfp->parent_event_data); |
| } |
| |
| static void _lu_fsm_done(struct osmo_fsm_inst *fi, |
| enum vlr_fsm_result result) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| lfp->result = result; |
| osmo_fsm_inst_state_chg(fi, VLR_ULA_S_DONE, 0, 0); |
| } |
| |
| static void lu_fsm_success(struct osmo_fsm_inst *fi) |
| { |
| _lu_fsm_done(fi, VLR_FSM_RESULT_SUCCESS); |
| } |
| |
| static void lu_fsm_failure(struct osmo_fsm_inst *fi, enum gsm48_reject_value rej_cause) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| lfp->vlr->ops.tx_lu_rej(lfp->msc_conn_ref, rej_cause ? : GSM48_REJECT_NETWORK_FAILURE); |
| _lu_fsm_done(fi, VLR_FSM_RESULT_FAILURE); |
| } |
| |
| static void vlr_loc_upd_start_lu_compl_fsm(struct osmo_fsm_inst *fi) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| lfp->lu_compl_vlr_fsm = |
| lu_compl_vlr_proc_alloc(fi, lfp->vsub, lfp->msc_conn_ref, |
| VLR_ULA_E_LU_COMPL_SUCCESS, |
| VLR_ULA_E_LU_COMPL_FAILURE, |
| lfp->assign_tmsi); |
| |
| osmo_fsm_inst_dispatch(lfp->lu_compl_vlr_fsm, LU_COMPL_VLR_E_START, NULL); |
| } |
| |
| static void lu_fsm_discard_lu_compl_fsm(struct osmo_fsm_inst *fi) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| if (!lfp->lu_compl_vlr_fsm) |
| return; |
| osmo_fsm_inst_term(lfp->lu_compl_vlr_fsm, OSMO_FSM_TERM_PARENT, NULL); |
| } |
| |
| /* 4.1.2.1 Node 4 */ |
| static void vlr_loc_upd_node_4(struct osmo_fsm_inst *fi) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_subscr *vsub = lfp->vsub; |
| bool hlr_unknown = false; |
| |
| LOGPFSM(fi, "%s()\n", __func__); |
| |
| if (hlr_unknown) { |
| /* FIXME: Delete subscriber record */ |
| /* LU REJ: Roaming not allowed */ |
| lu_fsm_failure(fi, GSM48_REJECT_ROAMING_NOT_ALLOWED); |
| } else { |
| /* Update_HLR_VLR */ |
| osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_HLR_UPD, |
| LU_TIMEOUT_LONG, 0); |
| lfp->upd_hlr_vlr_fsm = |
| upd_hlr_vlr_proc_start(fi, vsub, VLR_ULA_E_UPD_HLR_COMPL); |
| } |
| } |
| |
| /* 4.1.2.1 Node B */ |
| static void vlr_loc_upd_node_b(struct osmo_fsm_inst *fi) |
| { |
| LOGPFSM(fi, "%s()\n", __func__); |
| |
| /* OsmoHLR does not support PgA, neither stores the IMEISV, so we have no need to update the HLR |
| * with either. TODO: depend on actual HLR configuration. See 3GPP TS 23.012 Release 14, process |
| * Update_Location_Area_VLR (ULA_VLR2). */ |
| if (0) { /* IMEISV or PgA to send */ |
| vlr_loc_upd_node_4(fi); |
| } else { |
| /* Location_Update_Completion */ |
| osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_LU_COMPL, |
| LU_TIMEOUT_LONG, 0); |
| vlr_loc_upd_start_lu_compl_fsm(fi); |
| } |
| } |
| |
| /* Non-standard: after Ciphering Mode Complete (or no ciph required) */ |
| static void vlr_loc_upd_post_ciph(struct osmo_fsm_inst *fi) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_subscr *vsub = lfp->vsub; |
| int rc; |
| |
| LOGPFSM(fi, "%s()\n", __func__); |
| |
| OSMO_ASSERT(vsub); |
| |
| rc = lfp->vlr->ops.tx_common_id(lfp->msc_conn_ref); |
| if (rc) |
| LOGPFSML(fi, LOGL_ERROR, "Error while sending Common ID (%d)\n", rc); |
| |
| vsub->conf_by_radio_contact_ind = true; |
| /* Update LAI */ |
| vsub->cgi.lai = lfp->new_lai; |
| vsub->dormant_ind = false; |
| vsub->cancel_loc_rx = false; |
| if (hlr_update_needed(vsub)) { |
| vlr_loc_upd_node_4(fi); |
| } else { |
| /* TODO: ADD Support */ |
| /* TODO: Node A: PgA Support */ |
| vlr_loc_upd_node_b(fi); |
| } |
| } |
| |
| /* 4.1.2.1 after Authentication successful (or no auth rqd) */ |
| static void vlr_loc_upd_post_auth(struct osmo_fsm_inst *fi) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_subscr *vsub = lfp->vsub; |
| bool umts_aka; |
| |
| LOGPFSM(fi, "%s()\n", __func__); |
| |
| OSMO_ASSERT(vsub); |
| |
| /* Continue with ciphering, if enabled. |
| * If auth/ciph is optional and the HLR returned no auth info, continue without ciphering. */ |
| if (!is_cmc_smc_to_be_attempted(lfp) |
| || (vsub->sec_ctx == VLR_SEC_CTX_NONE && !lfp->is_ciphering_required)) { |
| vlr_loc_upd_post_ciph(fi); |
| return; |
| } |
| |
| if (!vsub->last_tuple) { |
| LOGPFSML(fi, LOGL_ERROR, "No auth tuple available\n"); |
| lu_fsm_failure(fi, GSM48_REJECT_NETWORK_FAILURE); |
| return; |
| } |
| |
| switch (vsub->sec_ctx) { |
| case VLR_SEC_CTX_GSM: |
| umts_aka = false; |
| break; |
| case VLR_SEC_CTX_UMTS: |
| umts_aka = true; |
| break; |
| default: |
| LOGPFSML(fi, LOGL_ERROR, "Cannot start ciphering, security context is not established\n"); |
| lu_fsm_failure(fi, GSM48_REJECT_NETWORK_FAILURE); |
| return; |
| } |
| |
| if (vlr_set_ciph_mode(vsub->vlr, fi, lfp->msc_conn_ref, |
| umts_aka, |
| vsub->vlr->cfg.retrieve_imeisv_ciphered)) { |
| LOGPFSML(fi, LOGL_ERROR, |
| "Failed to send Ciphering Mode Command\n"); |
| lu_fsm_failure(fi, GSM48_REJECT_NETWORK_FAILURE); |
| return; |
| } |
| |
| osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_CIPH, LU_TIMEOUT_LONG, 0); |
| } |
| |
| static void vlr_loc_upd_node1(struct osmo_fsm_inst *fi) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_subscr *vsub = lfp->vsub; |
| |
| LOGPFSM(fi, "%s()\n", __func__); |
| |
| OSMO_ASSERT(vsub); |
| |
| if (try_auth(lfp)) { |
| /* Authenticate_VLR */ |
| osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_AUTH, |
| LU_TIMEOUT_LONG, 0); |
| vsub->auth_fsm = auth_fsm_start(lfp->vsub, |
| fi, |
| VLR_ULA_E_AUTH_SUCCESS, |
| VLR_ULA_E_AUTH_NO_INFO, |
| VLR_ULA_E_AUTH_FAILURE, |
| lfp->is_r99, |
| lfp->is_utran); |
| } else { |
| /* no need for authentication */ |
| vlr_loc_upd_post_auth(fi); |
| } |
| } |
| |
| static void vlr_loc_upd_node1_pre(struct osmo_fsm_inst *fi) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_instance *vlr = lfp->vlr; |
| |
| LOGPFSM(fi, "%s()\n", __func__); |
| |
| if (vlr->cfg.check_imei_rqd && vlr->cfg.retrieve_imeisv_early) { |
| osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY, vlr_timer(lfp->vlr, 3270), 3270); |
| vlr_subscr_tx_req_check_imei(lfp->vsub); |
| } else { |
| vlr_loc_upd_node1(fi); |
| } |
| } |
| |
| /* End of Check_IMEI Procedure. Executed early (before the location update), so we can send the IMEI to the HLR even if |
| * the MS would be rejected in LU. See the "Configuring the Subscribers Create on Demand Feature" section of the OsmoHLR |
| * user manual for a detailed explanation of the use case. */ |
| static void lu_fsm_wait_hlr_check_imei_early(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| { |
| switch (event) { |
| case VLR_ULA_E_HLR_IMEI_ACK: |
| vlr_loc_upd_node1(fi); |
| break; |
| case VLR_ULA_E_HLR_IMEI_NACK: |
| lu_fsm_failure(fi, GSM48_REJECT_ILLEGAL_ME); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| break; |
| } |
| } |
| |
| static void vlr_loc_upd_want_imsi(struct osmo_fsm_inst *fi) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_instance *vlr = lfp->vlr; |
| |
| LOGPFSM(fi, "%s()\n", __func__); |
| |
| OSMO_ASSERT(lfp->vsub); |
| |
| /* Obtain_IMSI_VLR */ |
| osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_IMSI, |
| vlr_timer(vlr, 3270), 3270); |
| vlr->ops.tx_id_req(lfp->msc_conn_ref, GSM_MI_TYPE_IMSI); |
| /* will continue at vlr_loc_upd_node1_pre() once IMSI arrives */ |
| } |
| |
| static int assoc_lfp_with_sub(struct osmo_fsm_inst *fi, struct vlr_subscr *vsub) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_instance *vlr = lfp->vlr; |
| |
| if (vsub->lu_fsm) { |
| LOGPFSML(fi, LOGL_ERROR, |
| "A Location Updating process is already pending for" |
| " this subscriber. Aborting.\n"); |
| /* Also get rid of the other pending LU attempt? */ |
| /*lu_fsm_failure(vsub->lu_fsm, GSM48_REJECT_CONGESTION);*/ |
| lu_fsm_failure(fi, GSM48_REJECT_CONGESTION); |
| return -EINVAL; |
| } |
| vsub->lu_fsm = fi; |
| vsub->msc_conn_ref = lfp->msc_conn_ref; |
| /* FIXME: send new LAC to HLR? */ |
| vsub->cgi.lai.lac = lfp->new_lai.lac; |
| lfp->vsub = vsub; |
| /* Tell MSC to associate this subscriber with the given |
| * connection */ |
| if (vlr->ops.subscr_assoc(lfp->msc_conn_ref, lfp->vsub)) |
| lu_fsm_failure(fi, GSM48_REJECT_NETWORK_FAILURE); |
| return 0; |
| } |
| |
| static int _lu_fsm_associate_vsub(struct osmo_fsm_inst *fi) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_instance *vlr = lfp->vlr; |
| struct vlr_subscr *vsub = NULL; |
| |
| if (!lfp->imsi[0]) { |
| /* TMSI was used */ |
| lfp->lu_by_tmsi = true; |
| /* TMSI clash: if a different subscriber already has this TMSI, |
| * we will find that other subscriber in the VLR. So the IMSIs |
| * would mismatch, but we don't know about it. Theoretically, |
| * an authentication process would thwart any attempt to use |
| * someone else's TMSI. |
| * TODO: Otherwise we can ask for the IMSI and verify that it |
| * matches the IMSI on record. */ |
| vsub = vlr_subscr_find_or_create_by_tmsi(vlr, lfp->tmsi, __func__, NULL); |
| |
| if (!vsub) { |
| LOGPFSML(fi, LOGL_ERROR, "VLR subscriber allocation failed\n"); |
| lu_fsm_failure(fi, GSM48_REJECT_SRV_OPT_TMP_OUT_OF_ORDER); |
| return -1; |
| } |
| |
| vsub->sub_dataconf_by_hlr_ind = false; |
| if (assoc_lfp_with_sub(fi, vsub)) { |
| vlr_subscr_put(vsub, __func__); |
| return -1; /* error, fsm failure invoked in assoc_lfp_with_sub() */ |
| } |
| vlr_subscr_put(vsub, __func__); |
| } else { |
| /* IMSI was used */ |
| vsub = vlr_subscr_find_or_create_by_imsi(vlr, lfp->imsi, __func__, NULL); |
| |
| if (!vsub) { |
| LOGPFSML(fi, LOGL_ERROR, "VLR subscriber allocation failed\n"); |
| lu_fsm_failure(fi, GSM48_REJECT_SRV_OPT_TMP_OUT_OF_ORDER); |
| vlr_subscr_put(vsub, __func__); |
| return -1; |
| } |
| |
| vsub->sub_dataconf_by_hlr_ind = false; |
| if (assoc_lfp_with_sub(fi, vsub)) { |
| vlr_subscr_put(vsub, __func__); |
| return -1; /* error, fsm failure invoked in assoc_lfp_with_sub() */ |
| } |
| vlr_subscr_put(vsub, __func__); |
| } |
| return 0; |
| } |
| |
| /* 4.1.2.1: Subscriber (via MSC/SGSN) requests location update */ |
| static void _start_lu_main(struct osmo_fsm_inst *fi) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_instance *vlr = lfp->vlr; |
| |
| /* TODO: PUESBINE related handling */ |
| |
| /* Is previous LAI in this VLR? */ |
| if (!lai_in_this_vlr(vlr, &lfp->old_lai)) { |
| #if 0 |
| /* FIXME: check previous VLR, (3) */ |
| osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_PVLR, |
| LU_TIMEOUT_LONG, 0); |
| return; |
| #endif |
| LOGPFSML(fi, LOGL_NOTICE, "LAI change from %s," |
| " but checking previous VLR not implemented\n", |
| osmo_lai_name(&lfp->old_lai)); |
| } |
| |
| /* If this is a TMSI based LU, we may not have the IMSI. Make sure that |
| * we know the IMSI, either on record, or request it. */ |
| if (!lfp->vsub->imsi[0]) |
| vlr_loc_upd_want_imsi(fi); |
| else |
| vlr_loc_upd_node1_pre(fi); |
| } |
| |
| static void lu_fsm_idle(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_instance *vlr = lfp->vlr; |
| |
| OSMO_ASSERT(event == VLR_ULA_E_UPDATE_LA); |
| |
| if (_lu_fsm_associate_vsub(fi)) |
| return; /* error. FSM already terminated. */ |
| |
| OSMO_ASSERT(lfp->vsub); |
| |
| /* At this point we know for which subscriber the location update is, |
| * we now must inform SGs-UE FSM that we received a location update |
| * via A, IU or Gs interface. */ |
| osmo_fsm_inst_dispatch(lfp->vsub->sgs_fsm, SGS_UE_E_RX_LU_FROM_A_IU_GS, NULL); |
| |
| /* See 3GPP TS 23.012, procedure Retrieve_IMEISV_If_Required */ |
| if ((!vlr->cfg.retrieve_imeisv_early) |
| || (lfp->type == VLR_LU_TYPE_PERIODIC && lfp->vsub->imeisv[0])) { |
| /* R_IMEISV_IR1 passed */ |
| _start_lu_main(fi); |
| } else { |
| vlr->ops.tx_id_req(lfp->msc_conn_ref, GSM_MI_TYPE_IMEISV); |
| osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_IMEISV, |
| vlr_timer(vlr, 3270), 3270); |
| } |
| } |
| |
| static void lu_fsm_wait_imeisv(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| switch (event) { |
| case VLR_ULA_E_ID_IMEISV: |
| /* IMEISV was copied in vlr_subscr_rx_id_resp(), and that's |
| * where we received this event from. */ |
| _start_lu_main(fi); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| break; |
| } |
| } |
| |
| /* Wait for response from Send_Identification to PVLR */ |
| static void lu_fsm_wait_pvlr(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| switch (event) { |
| case VLR_ULA_E_SEND_ID_ACK: |
| vlr_loc_upd_node1_pre(fi); |
| break; |
| case VLR_ULA_E_SEND_ID_NACK: |
| vlr_loc_upd_want_imsi(fi); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| break; |
| } |
| } |
| |
| /* Wait for result of Authenticate_VLR procedure */ |
| static void lu_fsm_wait_auth(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| enum gsm48_reject_value *res = data; |
| |
| lfp->upd_hlr_vlr_fsm = NULL; |
| |
| switch (event) { |
| case VLR_ULA_E_AUTH_SUCCESS: |
| /* Result == Pass */ |
| vlr_loc_upd_post_auth(fi); |
| return; |
| |
| case VLR_ULA_E_AUTH_FAILURE: |
| lu_fsm_failure(fi, res ? *res : GSM48_REJECT_NETWORK_FAILURE); |
| return; |
| |
| case VLR_ULA_E_AUTH_NO_INFO: |
| /* HLR returned no auth info for the subscriber. Continue only if authentication is optional. */ |
| if (lfp->authentication_required || lfp->is_ciphering_required) { |
| lu_fsm_failure(fi, res ? *res : GSM48_REJECT_NETWORK_FAILURE); |
| return; |
| } |
| LOGPFSML(fi, LOGL_INFO, |
| "Attaching subscriber without auth (auth is optional, and no auth info received from HLR)\n"); |
| vlr_loc_upd_post_auth(fi); |
| return; |
| |
| default: |
| OSMO_ASSERT(false); |
| } |
| } |
| |
| static void lu_fsm_wait_ciph(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| enum vlr_ciph_result_cause result = VLR_CIPH_REJECT; |
| |
| OSMO_ASSERT(event == VLR_ULA_E_CIPH_RES); |
| |
| if (!data) |
| LOGPFSML(fi, LOGL_ERROR, "invalid ciphering result: NULL\n"); |
| else |
| result = *(enum vlr_ciph_result_cause*)data; |
| |
| switch (result) { |
| case VLR_CIPH_COMPL: |
| vlr_loc_upd_post_ciph(fi); |
| return; |
| case VLR_CIPH_REJECT: |
| LOGPFSM(fi, "ciphering rejected\n"); |
| lu_fsm_failure(fi, GSM48_REJECT_INVALID_MANDANTORY_INF); |
| return; |
| default: |
| LOGPFSML(fi, LOGL_ERROR, "invalid ciphering result: %d\n", result); |
| lu_fsm_failure(fi, GSM48_REJECT_INVALID_MANDANTORY_INF); |
| return; |
| } |
| } |
| |
| static void lu_fsm_wait_imsi(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_subscr *vsub = lfp->vsub; |
| char *mi_string = data; |
| |
| switch (event) { |
| case VLR_ULA_E_ID_IMSI: |
| vlr_subscr_set_imsi(vsub, mi_string); |
| vlr_loc_upd_node1_pre(fi); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| break; |
| } |
| } |
| |
| /* At the end of Update_HLR_VLR */ |
| static void lu_fsm_wait_hlr_ul_res(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| |
| switch (event) { |
| case VLR_ULA_E_HLR_LU_RES: |
| /* pass-through this event to Update_HLR_VLR */ |
| if (data == NULL) |
| osmo_fsm_inst_dispatch(lfp->upd_hlr_vlr_fsm, UPD_HLR_VLR_E_UPD_LOC_ACK, NULL); |
| else |
| osmo_fsm_inst_dispatch(lfp->upd_hlr_vlr_fsm, UPD_HLR_VLR_E_UPD_LOC_NACK, data); |
| break; |
| case VLR_ULA_E_UPD_HLR_COMPL: |
| if (data == NULL) { |
| /* successful case */ |
| osmo_fsm_inst_state_chg(fi, VLR_ULA_S_WAIT_LU_COMPL, |
| LU_TIMEOUT_LONG, 0); |
| vlr_loc_upd_start_lu_compl_fsm(fi); |
| /* continue in MSC ?!? */ |
| } else { |
| /* unsuccessful case */ |
| enum gsm48_reject_value cause = |
| *(enum gsm48_reject_value *)data; |
| /* Ignoring standalone mode for now. */ |
| if (0 /* procedure_error && vlr->cfg.standalone_mode */) { |
| osmo_fsm_inst_state_chg(fi, |
| VLR_ULA_S_WAIT_LU_COMPL_STANDALONE, |
| LU_TIMEOUT_LONG, 0); |
| vlr_loc_upd_start_lu_compl_fsm(fi); |
| } else { |
| lu_fsm_failure(fi, cause); |
| } |
| } |
| break; |
| case VLR_ULA_E_ID_IMEI: |
| case VLR_ULA_E_ID_IMEISV: |
| /* Got the IMEI from ME, nothing to do right now though. */ |
| break; |
| default: |
| OSMO_ASSERT(0); |
| break; |
| } |
| } |
| |
| /* Wait for end of Location_Update_Completion_VLR */ |
| static void lu_fsm_wait_lu_compl(struct osmo_fsm_inst *fi, uint32_t event, |
| void *data) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| uint8_t cause; |
| |
| switch (event) { |
| case VLR_ULA_E_NEW_TMSI_ACK: |
| osmo_fsm_inst_dispatch(lfp->lu_compl_vlr_fsm, |
| LU_COMPL_VLR_E_NEW_TMSI_ACK, NULL); |
| break; |
| case VLR_ULA_E_ID_IMEI: |
| case VLR_ULA_E_ID_IMEISV: |
| /* Got the IMEI from ME, now send it to HLR */ |
| vlr_subscr_tx_req_check_imei(lfp->vsub); |
| break; |
| case VLR_ULA_E_HLR_IMEI_ACK: |
| osmo_fsm_inst_dispatch(lfp->lu_compl_vlr_fsm, |
| LU_COMPL_VLR_E_IMEI_CHECK_ACK, NULL); |
| break; |
| case VLR_ULA_E_HLR_IMEI_NACK: |
| osmo_fsm_inst_dispatch(lfp->lu_compl_vlr_fsm, |
| LU_COMPL_VLR_E_IMEI_CHECK_NACK, NULL); |
| break; |
| case VLR_ULA_E_LU_COMPL_SUCCESS: |
| lu_fsm_discard_lu_compl_fsm(fi); |
| |
| /* Update Register */ |
| /* TODO: Set_Notification_Type 23.078 */ |
| /* TODO: Notify_gsmSCF 23.078 */ |
| /* TODO: Authenticated Radio Contact Established -> ARC */ |
| |
| if (lfp->type == VLR_LU_TYPE_IMSI_ATTACH) |
| lfp->vlr->ops.tx_mm_info(lfp->msc_conn_ref); |
| |
| lu_fsm_success(fi); |
| break; |
| case VLR_ULA_E_LU_COMPL_FAILURE: |
| cause = GSM48_REJECT_NETWORK_FAILURE; |
| if (data) |
| cause = *(uint8_t*)data; |
| lu_fsm_discard_lu_compl_fsm(fi); |
| lu_fsm_failure(fi, cause); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| break; |
| } |
| } |
| |
| /* Wait for end of Location_Update_Completion_VLR (standalone case) */ |
| static void lu_fsm_wait_lu_compl_standalone(struct osmo_fsm_inst *fi, |
| uint32_t event, void *data) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_subscr *vsub = lfp->vsub; |
| uint8_t cause; |
| |
| switch (event) { |
| case VLR_ULA_E_NEW_TMSI_ACK: |
| osmo_fsm_inst_dispatch(lfp->lu_compl_vlr_fsm, |
| LU_COMPL_VLR_E_NEW_TMSI_ACK, NULL); |
| break; |
| case VLR_ULA_E_LU_COMPL_SUCCESS: |
| lu_fsm_discard_lu_compl_fsm(fi); |
| vsub->sub_dataconf_by_hlr_ind = false; |
| lu_fsm_success(fi); |
| break; |
| case VLR_ULA_E_LU_COMPL_FAILURE: |
| vsub->sub_dataconf_by_hlr_ind = false; |
| cause = GSM48_REJECT_NETWORK_FAILURE; |
| if (data) |
| cause = *(uint8_t*)data; |
| lu_fsm_discard_lu_compl_fsm(fi); |
| lu_fsm_failure(fi, cause); |
| break; |
| default: |
| OSMO_ASSERT(0); |
| break; |
| } |
| } |
| |
| static const struct osmo_fsm_state vlr_lu_fsm_states[] = { |
| [VLR_ULA_S_IDLE] = { |
| .in_event_mask = S(VLR_ULA_E_UPDATE_LA), |
| .out_state_mask = S(VLR_ULA_S_WAIT_IMEISV) | |
| S(VLR_ULA_S_WAIT_PVLR) | |
| S(VLR_ULA_S_WAIT_IMSI) | |
| S(VLR_ULA_S_WAIT_AUTH) | |
| S(VLR_ULA_S_WAIT_CIPH) | |
| S(VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY) | |
| S(VLR_ULA_S_WAIT_HLR_UPD) | |
| S(VLR_ULA_S_DONE), |
| .name = OSMO_STRINGIFY(VLR_ULA_S_IDLE), |
| .action = lu_fsm_idle, |
| }, |
| [VLR_ULA_S_WAIT_IMEISV] = { |
| .in_event_mask = S(VLR_ULA_E_ID_IMEISV), |
| .out_state_mask = S(VLR_ULA_S_WAIT_PVLR) | |
| S(VLR_ULA_S_WAIT_IMSI) | |
| S(VLR_ULA_S_WAIT_AUTH) | |
| S(VLR_ULA_S_WAIT_CIPH) | |
| S(VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY) | |
| S(VLR_ULA_S_WAIT_HLR_UPD) | |
| S(VLR_ULA_S_DONE), |
| .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_IMEISV), |
| .action = lu_fsm_wait_imeisv, |
| }, |
| [VLR_ULA_S_WAIT_PVLR] = { |
| .in_event_mask = S(VLR_ULA_E_SEND_ID_ACK) | |
| S(VLR_ULA_E_SEND_ID_NACK), |
| .out_state_mask = S(VLR_ULA_S_WAIT_IMSI) | |
| S(VLR_ULA_S_WAIT_AUTH) | |
| S(VLR_ULA_S_WAIT_CIPH) | |
| S(VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY) | |
| S(VLR_ULA_S_DONE), |
| .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_PVLR), |
| .action = lu_fsm_wait_pvlr, |
| }, |
| [VLR_ULA_S_WAIT_AUTH] = { |
| .in_event_mask = S(VLR_ULA_E_AUTH_SUCCESS) | |
| S(VLR_ULA_E_AUTH_NO_INFO) | |
| S(VLR_ULA_E_AUTH_FAILURE), |
| .out_state_mask = S(VLR_ULA_S_WAIT_CIPH) | |
| S(VLR_ULA_S_WAIT_LU_COMPL) | |
| S(VLR_ULA_S_WAIT_HLR_UPD) | |
| S(VLR_ULA_S_DONE), |
| .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_AUTH), |
| .action = lu_fsm_wait_auth, |
| }, |
| [VLR_ULA_S_WAIT_CIPH] = { |
| .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_CIPH), |
| .in_event_mask = S(VLR_ULA_E_CIPH_RES), |
| .out_state_mask = S(VLR_ULA_S_WAIT_LU_COMPL) | |
| S(VLR_ULA_S_WAIT_HLR_UPD) | |
| S(VLR_ULA_S_DONE), |
| .action = lu_fsm_wait_ciph, |
| }, |
| [VLR_ULA_S_WAIT_IMSI] = { |
| .in_event_mask = S(VLR_ULA_E_ID_IMSI), |
| .out_state_mask = S(VLR_ULA_S_WAIT_AUTH) | |
| S(VLR_ULA_S_WAIT_CIPH) | |
| S(VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY) | |
| S(VLR_ULA_S_WAIT_HLR_UPD) | |
| S(VLR_ULA_S_DONE), |
| .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_IMSI), |
| .action = lu_fsm_wait_imsi, |
| }, |
| [VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY] = { |
| .in_event_mask = S(VLR_ULA_E_HLR_IMEI_ACK) | |
| S(VLR_ULA_E_HLR_IMEI_NACK), |
| .out_state_mask = S(VLR_ULA_S_WAIT_AUTH) | |
| S(VLR_ULA_S_WAIT_CIPH) | |
| S(VLR_ULA_S_WAIT_HLR_UPD) | |
| S(VLR_ULA_S_WAIT_LU_COMPL) | |
| S(VLR_ULA_S_DONE), |
| .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_HLR_CHECK_IMEI_EARLY), |
| .action = lu_fsm_wait_hlr_check_imei_early, |
| }, |
| [VLR_ULA_S_WAIT_HLR_UPD] = { |
| .in_event_mask = S(VLR_ULA_E_HLR_LU_RES) | |
| S(VLR_ULA_E_UPD_HLR_COMPL) | |
| S(VLR_ULA_E_ID_IMEI) | |
| S(VLR_ULA_E_ID_IMEISV), |
| .out_state_mask = S(VLR_ULA_S_WAIT_LU_COMPL) | |
| S(VLR_ULA_S_WAIT_LU_COMPL_STANDALONE) | |
| S(VLR_ULA_S_DONE), |
| .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_HLR_UPD), |
| .action = lu_fsm_wait_hlr_ul_res, |
| }, |
| [VLR_ULA_S_WAIT_LU_COMPL] = { |
| .in_event_mask = S(VLR_ULA_E_LU_COMPL_SUCCESS) | |
| S(VLR_ULA_E_LU_COMPL_FAILURE) | |
| S(VLR_ULA_E_NEW_TMSI_ACK) | |
| S(VLR_ULA_E_ID_IMEI) | |
| S(VLR_ULA_E_ID_IMEISV) | |
| S(VLR_ULA_E_HLR_IMEI_ACK) | |
| S(VLR_ULA_E_HLR_IMEI_NACK), |
| .out_state_mask = S(VLR_ULA_S_DONE), |
| .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_LU_COMPL), |
| .action = lu_fsm_wait_lu_compl, |
| }, |
| [VLR_ULA_S_WAIT_LU_COMPL_STANDALONE] = { |
| .in_event_mask = S(VLR_ULA_E_LU_COMPL_SUCCESS) | |
| S(VLR_ULA_E_LU_COMPL_FAILURE) | |
| S(VLR_ULA_E_NEW_TMSI_ACK), |
| .out_state_mask = S(VLR_ULA_S_DONE), |
| .name = OSMO_STRINGIFY(VLR_ULA_S_WAIT_LU_COMPL_STANDALONE), |
| .action = lu_fsm_wait_lu_compl_standalone, |
| }, |
| [VLR_ULA_S_DONE] = { |
| .name = OSMO_STRINGIFY(VLR_ULA_S_DONE), |
| .onenter = lu_fsm_dispatch_result, |
| }, |
| }; |
| |
| static void fsm_lu_cleanup(struct osmo_fsm_inst *fi, enum osmo_fsm_term_cause cause) |
| { |
| struct lu_fsm_priv *lfp = lu_fsm_fi_priv(fi); |
| struct vlr_subscr *vsub = lfp->vsub; |
| |
| LOGPFSM(fi, "fsm_lu_cleanup called with cause %s\n", |
| osmo_fsm_term_cause_name(cause)); |
| if (vsub && vsub->lu_fsm == fi) |
| vsub->lu_fsm = NULL; |
| } |
| |
| static struct osmo_fsm vlr_lu_fsm = { |
| .name = "vlr_lu_fsm", |
| .states = vlr_lu_fsm_states, |
| .num_states = ARRAY_SIZE(vlr_lu_fsm_states), |
| .allstate_event_mask = 0, |
| .allstate_action = NULL, |
| .log_subsys = DVLR, |
| .event_names = fsm_lu_event_names, |
| .cleanup = fsm_lu_cleanup, |
| }; |
| |
| static inline struct lu_fsm_priv *lu_fsm_fi_priv(struct osmo_fsm_inst *fi) |
| { |
| OSMO_ASSERT(fi->fsm == &vlr_lu_fsm); |
| return (struct lu_fsm_priv*)fi->priv; |
| } |
| |
| struct osmo_fsm_inst * |
| vlr_loc_update(struct osmo_fsm_inst *parent, |
| uint32_t parent_event_success, |
| uint32_t parent_event_failure, |
| void *parent_event_data, |
| struct vlr_instance *vlr, void *msc_conn_ref, |
| enum vlr_lu_type type, uint32_t tmsi, const char *imsi, |
| const struct osmo_location_area_id *old_lai, |
| const struct osmo_location_area_id *new_lai, |
| bool authentication_required, |
| bool is_ciphering_to_be_attempted, |
| bool is_ciphering_required, |
| uint8_t key_seq, |
| bool is_r99, bool is_utran, |
| bool assign_tmsi) |
| { |
| struct osmo_fsm_inst *fi; |
| struct lu_fsm_priv *lfp; |
| |
| if (is_ciphering_required) |
| OSMO_ASSERT(is_ciphering_to_be_attempted); |
| |
| fi = osmo_fsm_inst_alloc_child(&vlr_lu_fsm, parent, parent_event_failure); |
| if (!fi) |
| return NULL; |
| |
| lfp = talloc_zero(fi, struct lu_fsm_priv); |
| lfp->vlr = vlr; |
| lfp->msc_conn_ref = msc_conn_ref; |
| lfp->tmsi = tmsi; |
| lfp->type = type; |
| lfp->old_lai = *old_lai; |
| lfp->new_lai = *new_lai; |
| lfp->lu_by_tmsi = true; |
| lfp->parent_event_success = parent_event_success; |
| lfp->parent_event_failure = parent_event_failure; |
| lfp->parent_event_data = parent_event_data; |
| lfp->authentication_required = authentication_required; |
| lfp->is_ciphering_to_be_attempted = is_ciphering_to_be_attempted; |
| lfp->is_ciphering_required = is_ciphering_required; |
| lfp->key_seq = key_seq; |
| lfp->is_r99 = is_r99; |
| lfp->is_utran = is_utran; |
| lfp->assign_tmsi = assign_tmsi; |
| if (imsi) { |
| strncpy(lfp->imsi, imsi, sizeof(lfp->imsi)-1); |
| lfp->imsi[sizeof(lfp->imsi)-1] = '\0'; |
| lfp->lu_by_tmsi = false; |
| } |
| fi->priv = lfp; |
| |
| LOGPFSM(fi, "rev=%s net=%s%s%s\n", |
| is_r99 ? "R99" : "GSM", |
| is_utran ? "UTRAN" : "GERAN", |
| (authentication_required || is_ciphering_to_be_attempted) ? |
| " Auth" : " (no Auth)", |
| (authentication_required || is_ciphering_to_be_attempted) ? |
| (is_ciphering_to_be_attempted ? "+Ciph" : " (no Ciph)") |
| : ""); |
| |
| if (is_utran && !authentication_required) |
| LOGPFSML(fi, LOGL_ERROR, |
| "Authentication off on UTRAN network. Good luck.\n"); |
| |
| osmo_fsm_inst_dispatch(fi, VLR_ULA_E_UPDATE_LA, NULL); |
| |
| return fi; |
| } |
| |
| void vlr_loc_update_cancel(struct osmo_fsm_inst *fi, |
| enum osmo_fsm_term_cause fsm_cause, |
| uint8_t gsm48_cause) |
| { |
| struct lu_fsm_priv *lfp; |
| |
| OSMO_ASSERT(fi); |
| OSMO_ASSERT(fi->fsm == &vlr_lu_fsm); |
| |
| lfp = fi->priv; |
| lfp->rej_cause = gsm48_cause; |
| |
| if (fi->state != VLR_ULA_S_DONE) |
| lu_fsm_failure(fi, gsm48_cause); |
| } |
| |
| void vlr_lu_fsm_init(void) |
| { |
| OSMO_ASSERT(osmo_fsm_register(&vlr_lu_fsm) == 0); |
| OSMO_ASSERT(osmo_fsm_register(&upd_hlr_vlr_fsm) == 0); |
| OSMO_ASSERT(osmo_fsm_register(&sub_pres_vlr_fsm) == 0); |
| OSMO_ASSERT(osmo_fsm_register(&lu_compl_vlr_fsm) == 0); |
| } |