796 lines
22 KiB
C
796 lines
22 KiB
C
/* Osmocom Visitor Location Register (VLR): Access Request FSMs */
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/* (C) 2016 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <osmocom/core/fsm.h>
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#include <osmocom/gsm/gsup.h>
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#include <osmocom/msc/vlr.h>
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#include <osmocom/msc/debug.h>
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#include "vlr_core.h"
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#include "vlr_auth_fsm.h"
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#include "vlr_lu_fsm.h"
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#include "vlr_access_req_fsm.h"
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#define S(x) (1 << (x))
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/***********************************************************************
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* Process_Access_Request_VLR, TS 29.002 Chapter 25.4.2
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***********************************************************************/
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const struct value_string vlr_proc_arq_result_names[] = {
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OSMO_VALUE_STRING(VLR_PR_ARQ_RES_NONE),
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OSMO_VALUE_STRING(VLR_PR_ARQ_RES_SYSTEM_FAILURE),
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OSMO_VALUE_STRING(VLR_PR_ARQ_RES_ILLEGAL_SUBSCR),
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OSMO_VALUE_STRING(VLR_PR_ARQ_RES_UNIDENT_SUBSCR),
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OSMO_VALUE_STRING(VLR_PR_ARQ_RES_ROAMING_NOTALLOWED),
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OSMO_VALUE_STRING(VLR_PR_ARQ_RES_ILLEGAL_EQUIP),
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OSMO_VALUE_STRING(VLR_PR_ARQ_RES_UNKNOWN_ERROR),
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OSMO_VALUE_STRING(VLR_PR_ARQ_RES_TIMEOUT),
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OSMO_VALUE_STRING(VLR_PR_ARQ_RES_PASSED),
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{ 0, NULL }
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};
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static const struct value_string proc_arq_vlr_event_names[] = {
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OSMO_VALUE_STRING(PR_ARQ_E_START),
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OSMO_VALUE_STRING(PR_ARQ_E_ID_IMSI),
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OSMO_VALUE_STRING(PR_ARQ_E_AUTH_RES),
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OSMO_VALUE_STRING(PR_ARQ_E_CIPH_RES),
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OSMO_VALUE_STRING(PR_ARQ_E_UPD_LOC_RES),
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OSMO_VALUE_STRING(PR_ARQ_E_TRACE_RES),
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OSMO_VALUE_STRING(PR_ARQ_E_IMEI_RES),
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OSMO_VALUE_STRING(PR_ARQ_E_PRES_RES),
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OSMO_VALUE_STRING(PR_ARQ_E_TMSI_ACK),
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{ 0, NULL }
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};
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struct proc_arq_priv {
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struct vlr_instance *vlr;
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struct vlr_subscr *vsub;
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void *msc_conn_ref;
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struct osmo_fsm_inst *ul_child_fsm;
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struct osmo_fsm_inst *sub_pres_vlr_fsm;
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uint32_t parent_event_success;
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uint32_t parent_event_failure;
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void *parent_event_data;
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enum vlr_parq_type type;
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enum vlr_proc_arq_result result;
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bool by_tmsi;
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char imsi[16];
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uint32_t tmsi;
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struct osmo_location_area_id lai;
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bool authentication_required;
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enum vlr_ciph ciphering_required;
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bool is_r99;
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bool is_utran;
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bool implicitly_accepted_parq_by_ciphering_cmd;
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};
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static void assoc_par_with_subscr(struct osmo_fsm_inst *fi, struct vlr_subscr *vsub)
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{
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struct proc_arq_priv *par = fi->priv;
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struct vlr_instance *vlr = par->vlr;
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vsub->msc_conn_ref = par->msc_conn_ref;
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par->vsub = vsub;
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/* Tell MSC to associate this subscriber with the given
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* connection */
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vlr->ops.subscr_assoc(par->msc_conn_ref, par->vsub);
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}
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#define proc_arq_fsm_done(fi, res) _proc_arq_fsm_done(fi, res, __FILE__, __LINE__)
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static void _proc_arq_fsm_done(struct osmo_fsm_inst *fi,
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enum vlr_proc_arq_result res,
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const char *file, int line)
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{
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struct proc_arq_priv *par = fi->priv;
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LOGPFSMSRC(fi, file, line, "proc_arq_fsm_done(%s)\n",
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vlr_proc_arq_result_name(res));
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par->result = res;
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osmo_fsm_inst_state_chg(fi, PR_ARQ_S_DONE, 0, 0);
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}
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static void proc_arq_vlr_dispatch_result(struct osmo_fsm_inst *fi,
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uint32_t prev_state)
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{
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struct proc_arq_priv *par = fi->priv;
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bool success;
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int rc;
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LOGPFSM(fi, "Process Access Request result: %s\n",
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vlr_proc_arq_result_name(par->result));
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success = (par->result == VLR_PR_ARQ_RES_PASSED);
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/* It would be logical to first dispatch the success event to the
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* parent FSM, but that could start actions that send messages to the
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* MS. Rather send the CM Service Accept message first and then signal
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* success. Since messages are handled synchronously, the success event
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* will be processed before we handle new incoming data from the MS. */
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if (par->type == VLR_PR_ARQ_T_CM_SERV_REQ) {
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if (success
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&& !par->implicitly_accepted_parq_by_ciphering_cmd) {
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rc = par->vlr->ops.tx_cm_serv_acc(par->msc_conn_ref);
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if (rc) {
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LOGPFSML(fi, LOGL_ERROR,
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"Failed to send CM Service Accept\n");
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success = false;
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}
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}
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if (!success) {
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rc = par->vlr->ops.tx_cm_serv_rej(par->msc_conn_ref,
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par->result);
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if (rc)
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LOGPFSML(fi, LOGL_ERROR,
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"Failed to send CM Service Reject\n");
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}
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}
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/* For VLR_PR_ARQ_T_PAGING_RESP, there is nothing to send. The conn_fsm
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* will start handling pending paging transactions. */
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if (!fi->proc.parent) {
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LOGPFSML(fi, LOGL_ERROR, "No parent FSM");
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return;
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}
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osmo_fsm_inst_dispatch(fi->proc.parent,
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success ? par->parent_event_success
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: par->parent_event_failure,
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par->parent_event_data);
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}
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void proc_arq_vlr_cleanup(struct osmo_fsm_inst *fi,
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enum osmo_fsm_term_cause cause)
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{
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struct proc_arq_priv *par = fi->priv;
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if (par->vsub && par->vsub->proc_arq_fsm == fi)
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par->vsub->proc_arq_fsm = NULL;
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}
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static void _proc_arq_vlr_post_imei(struct osmo_fsm_inst *fi)
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{
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struct proc_arq_priv *par = fi->priv;
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struct vlr_subscr *vsub = par->vsub;
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LOGPFSM(fi, "%s()\n", __func__);
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/* See 3GPP TS 29.002 Proc_Acc_Req_VLR3. */
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/* TODO: Identity := IMSI */
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if (0 /* TODO: TMSI reallocation at access: vlr->cfg.alloc_tmsi_arq */) {
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vlr_subscr_alloc_tmsi(vsub);
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/* TODO: forward TMSI to MS, wait for TMSI
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* REALLOC COMPLETE */
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/* TODO: Freeze old TMSI */
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osmo_fsm_inst_state_chg(fi, PR_ARQ_S_WAIT_TMSI_ACK, 0, 0);
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return;
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}
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proc_arq_fsm_done(fi, VLR_PR_ARQ_RES_PASSED);
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}
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static void _proc_arq_vlr_post_trace(struct osmo_fsm_inst *fi)
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{
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struct proc_arq_priv *par = fi->priv;
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struct vlr_subscr *vsub = par->vsub;
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struct vlr_instance *vlr = vsub->vlr;
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LOGPFSM(fi, "%s()\n", __func__);
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/* Node 3 */
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/* See 3GPP TS 29.002 Proc_Acc_Req_VLR3. */
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if (0 /* IMEI check required */) {
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/* Chck_IMEI_VLR */
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vlr->ops.tx_id_req(par->msc_conn_ref, GSM_MI_TYPE_IMEI);
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osmo_fsm_inst_state_chg(fi, PR_ARQ_S_WAIT_CHECK_IMEI,
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vlr_timer(vlr, 3270), 3270);
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} else
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_proc_arq_vlr_post_imei(fi);
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}
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/* After Subscriber_Present_VLR */
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static void _proc_arq_vlr_post_pres(struct osmo_fsm_inst *fi)
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{
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LOGPFSM(fi, "%s()\n", __func__);
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/* See 3GPP TS 29.002 Proc_Acc_Req_VLR3. */
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if (0 /* TODO: tracing required */) {
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/* TODO: Trace_Subscriber_Activity_VLR */
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osmo_fsm_inst_state_chg(fi, PR_ARQ_S_WAIT_TRACE_SUB, 0, 0);
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}
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_proc_arq_vlr_post_trace(fi);
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}
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/* After Update_Location_Child_VLR */
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static void _proc_arq_vlr_node2_post_vlr(struct osmo_fsm_inst *fi)
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{
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struct proc_arq_priv *par = fi->priv;
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struct vlr_subscr *vsub = par->vsub;
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LOGPFSM(fi, "%s()\n", __func__);
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if (!vsub->sub_dataconf_by_hlr_ind) {
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/* Set User Error: Unidentified Subscriber */
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proc_arq_fsm_done(fi, VLR_PR_ARQ_RES_UNIDENT_SUBSCR);
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return;
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}
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/* We don't feature location area specific blocking (yet). */
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if (0 /* roaming not allowed in LA */) {
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/* Set User Error: Roaming not allowed in this LA */
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proc_arq_fsm_done(fi, VLR_PR_ARQ_RES_ROAMING_NOTALLOWED);
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return;
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}
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vsub->imsi_detached_flag = false;
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if (vsub->ms_not_reachable_flag) {
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/* Start Subscriber_Present_VLR */
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osmo_fsm_inst_state_chg(fi, PR_ARQ_S_WAIT_SUB_PRES, 0, 0);
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par->sub_pres_vlr_fsm = sub_pres_vlr_fsm_start(fi, vsub,
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PR_ARQ_E_PRES_RES);
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return;
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}
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_proc_arq_vlr_post_pres(fi);
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}
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static void _proc_arq_vlr_node2_post_ciph(struct osmo_fsm_inst *fi)
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{
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struct proc_arq_priv *par = fi->priv;
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struct vlr_subscr *vsub = par->vsub;
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LOGPFSM(fi, "%s()\n", __func__);
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if (par->is_utran) {
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int rc;
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rc = par->vlr->ops.tx_common_id(par->msc_conn_ref);
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if (rc)
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LOGPFSML(fi, LOGL_ERROR,
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"Error while sending Common ID (%d)\n", rc);
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}
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vsub->conf_by_radio_contact_ind = true;
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if (vsub->loc_conf_in_hlr_ind == false) {
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/* start Update_Location_Child_VLR. WE use
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* Update_HLR_VLR instead, the differences appear
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* insignificant for now. */
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par->ul_child_fsm = upd_hlr_vlr_proc_start(fi, vsub,
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PR_ARQ_E_UPD_LOC_RES);
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osmo_fsm_inst_state_chg(fi, PR_ARQ_S_WAIT_UPD_LOC_CHILD, 0, 0);
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return;
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}
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_proc_arq_vlr_node2_post_vlr(fi);
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}
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static bool is_ciph_required(struct proc_arq_priv *par)
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{
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return par->ciphering_required != VLR_CIPH_NONE;
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}
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static void _proc_arq_vlr_node2(struct osmo_fsm_inst *fi)
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{
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struct proc_arq_priv *par = fi->priv;
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struct vlr_subscr *vsub = par->vsub;
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LOGPFSM(fi, "%s()\n", __func__);
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if (!is_ciph_required(par)) {
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_proc_arq_vlr_node2_post_ciph(fi);
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return;
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}
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if (vlr_set_ciph_mode(vsub->vlr, fi, par->msc_conn_ref,
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par->ciphering_required,
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vsub->vlr->cfg.retrieve_imeisv_ciphered)) {
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LOGPFSML(fi, LOGL_ERROR,
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"Failed to send Ciphering Mode Command\n");
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proc_arq_fsm_done(fi, VLR_PR_ARQ_RES_SYSTEM_FAILURE);
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return;
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}
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par->implicitly_accepted_parq_by_ciphering_cmd = true;
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osmo_fsm_inst_state_chg(fi, PR_ARQ_S_WAIT_CIPH, 0, 0);
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}
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static bool is_auth_required(struct proc_arq_priv *par)
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{
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/* The cases where the authentication procedure should be used
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* are defined in 3GPP TS 33.102 */
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/* For now we use a default value passed in to vlr_lu_fsm(). */
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return par->authentication_required
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|| (par->ciphering_required != VLR_CIPH_NONE);
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}
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/* after the IMSI is known */
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static void proc_arq_vlr_fn_post_imsi(struct osmo_fsm_inst *fi)
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{
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struct proc_arq_priv *par = fi->priv;
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struct vlr_subscr *vsub = par->vsub;
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LOGPFSM(fi, "%s()\n", __func__);
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OSMO_ASSERT(vsub);
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/* TODO: Identity IMEI -> System Failure */
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if (is_auth_required(par)) {
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osmo_fsm_inst_state_chg(fi, PR_ARQ_S_WAIT_AUTH,
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0, 0);
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vsub->auth_fsm = auth_fsm_start(vsub, fi->log_level, fi,
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PR_ARQ_E_AUTH_RES,
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par->is_r99,
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par->is_utran);
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} else {
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_proc_arq_vlr_node2(fi);
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}
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}
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static void proc_arq_vlr_fn_init(struct osmo_fsm_inst *fi,
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uint32_t event, void *data)
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{
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struct proc_arq_priv *par = fi->priv;
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struct vlr_instance *vlr = par->vlr;
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struct vlr_subscr *vsub = NULL;
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OSMO_ASSERT(event == PR_ARQ_E_START);
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/* Obtain_Identity_VLR */
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if (!par->by_tmsi) {
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/* IMSI was included */
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vsub = vlr_subscr_find_by_imsi(par->vlr, par->imsi);
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} else {
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/* TMSI was included */
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vsub = vlr_subscr_find_by_tmsi(par->vlr, par->tmsi);
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}
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if (vsub) {
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log_set_context(LOG_CTX_VLR_SUBSCR, vsub);
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if (vsub->proc_arq_fsm && fi != vsub->proc_arq_fsm) {
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LOGPFSML(fi, LOGL_ERROR,
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"Another proc_arq_fsm is already"
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" associated with subscr %s,"
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" terminating the other FSM.\n",
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vlr_subscr_name(vsub));
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proc_arq_fsm_done(vsub->proc_arq_fsm,
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VLR_PR_ARQ_RES_SYSTEM_FAILURE);
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}
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vsub->proc_arq_fsm = fi;
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assoc_par_with_subscr(fi, vsub);
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proc_arq_vlr_fn_post_imsi(fi);
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vlr_subscr_put(vsub);
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return;
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}
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/* No VSUB could be resolved. What now? */
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if (!par->by_tmsi) {
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/* We couldn't find a subscriber even by IMSI,
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* Set User Error: Unidentified Subscriber */
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proc_arq_fsm_done(fi, VLR_PR_ARQ_RES_UNIDENT_SUBSCR);
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return;
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} else {
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/* TMSI was included, are we permitted to use it? */
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if (vlr->cfg.parq_retrieve_imsi) {
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/* Obtain_IMSI_VLR */
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osmo_fsm_inst_state_chg(fi, PR_ARQ_S_WAIT_OBTAIN_IMSI,
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vlr_timer(vlr, 3270), 3270);
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return;
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} else {
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/* Set User Error: Unidentified Subscriber */
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proc_arq_fsm_done(fi, VLR_PR_ARQ_RES_UNIDENT_SUBSCR);
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return;
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}
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}
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}
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/* ID REQ(IMSI) has returned */
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static void proc_arq_vlr_fn_w_obt_imsi(struct osmo_fsm_inst *fi,
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uint32_t event, void *data)
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{
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struct proc_arq_priv *par = fi->priv;
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struct vlr_instance *vlr = par->vlr;
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struct vlr_subscr *vsub;
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OSMO_ASSERT(event == PR_ARQ_E_ID_IMSI);
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vsub = vlr_subscr_find_by_imsi(vlr, par->imsi);
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if (!vsub) {
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/* Set User Error: Unidentified Subscriber */
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proc_arq_fsm_done(fi, VLR_PR_ARQ_RES_UNIDENT_SUBSCR);
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return;
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}
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assoc_par_with_subscr(fi, vsub);
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proc_arq_vlr_fn_post_imsi(fi);
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vlr_subscr_put(vsub);
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}
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/* Authenticate_VLR has completed */
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static void proc_arq_vlr_fn_w_auth(struct osmo_fsm_inst *fi,
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uint32_t event, void *data)
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{
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enum vlr_auth_fsm_result res;
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enum vlr_proc_arq_result ret;
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OSMO_ASSERT(event == PR_ARQ_E_AUTH_RES);
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res = data ? *(enum vlr_auth_fsm_result*)data : -1;
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LOGPFSM(fi, "got %s\n", vlr_auth_fsm_result_name(res));
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switch (res) {
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case VLR_AUTH_RES_PASSED:
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/* Node 2 */
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_proc_arq_vlr_node2(fi);
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return;
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case VLR_AUTH_RES_ABORTED:
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/* Error */
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ret = VLR_PR_ARQ_RES_UNKNOWN_ERROR;
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break;
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case VLR_AUTH_RES_UNKNOWN_SUBSCR:
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/* Set User Error: Unidentified Subscriber */
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ret = VLR_PR_ARQ_RES_UNIDENT_SUBSCR;
|
|
break;
|
|
case VLR_AUTH_RES_AUTH_FAILED:
|
|
/* Set User Error: Illegal Subscriber */
|
|
ret = VLR_PR_ARQ_RES_ILLEGAL_SUBSCR;
|
|
break;
|
|
case VLR_AUTH_RES_PROC_ERR:
|
|
/* Set User Error: System failure */
|
|
ret = VLR_PR_ARQ_RES_SYSTEM_FAILURE;
|
|
break;
|
|
default:
|
|
LOGPFSML(fi, LOGL_ERROR, "Unexpected vlr_auth_fsm_result value: %d (data=%p)\n", res, data);
|
|
ret = VLR_PR_ARQ_RES_UNKNOWN_ERROR;
|
|
break;
|
|
}
|
|
|
|
/* send process_access_req response to caller, enter error state */
|
|
proc_arq_fsm_done(fi, ret);
|
|
}
|
|
|
|
static void proc_arq_vlr_fn_w_ciph(struct osmo_fsm_inst *fi,
|
|
uint32_t event, void *data)
|
|
{
|
|
struct proc_arq_priv *par = fi->priv;
|
|
struct vlr_subscr *vsub = par->vsub;
|
|
struct vlr_ciph_result res = { .cause = VLR_CIPH_REJECT };
|
|
|
|
OSMO_ASSERT(event == PR_ARQ_E_CIPH_RES);
|
|
|
|
if (!data)
|
|
LOGPFSML(fi, LOGL_ERROR, "invalid ciphering result: NULL\n");
|
|
else
|
|
res = *(struct vlr_ciph_result*)data;
|
|
|
|
switch (res.cause) {
|
|
case VLR_CIPH_COMPL:
|
|
break;
|
|
case VLR_CIPH_REJECT:
|
|
LOGPFSM(fi, "ciphering rejected\n");
|
|
proc_arq_fsm_done(fi, VLR_PR_ARQ_RES_ILLEGAL_SUBSCR);
|
|
return;
|
|
default:
|
|
LOGPFSML(fi, LOGL_ERROR, "invalid ciphering result: %d\n",
|
|
res.cause);
|
|
proc_arq_fsm_done(fi, VLR_PR_ARQ_RES_ILLEGAL_SUBSCR);
|
|
return;
|
|
}
|
|
|
|
|
|
if (res.imeisv) {
|
|
LOGPFSM(fi, "got IMEISV: %s\n", res.imeisv);
|
|
vlr_subscr_set_imeisv(vsub, res.imeisv);
|
|
}
|
|
_proc_arq_vlr_node2_post_ciph(fi);
|
|
}
|
|
|
|
/* Update_Location_Child_VLR has completed */
|
|
static void proc_arq_vlr_fn_w_upd_loc(struct osmo_fsm_inst *fi,
|
|
uint32_t event, void *data)
|
|
{
|
|
OSMO_ASSERT(event == PR_ARQ_E_UPD_LOC_RES);
|
|
|
|
_proc_arq_vlr_node2_post_vlr(fi);
|
|
}
|
|
|
|
/* Subscriber_Present_VLR has completed */
|
|
static void proc_arq_vlr_fn_w_pres(struct osmo_fsm_inst *fi,
|
|
uint32_t event, void *data)
|
|
{
|
|
OSMO_ASSERT(event == PR_ARQ_E_PRES_RES);
|
|
|
|
_proc_arq_vlr_post_pres(fi);
|
|
}
|
|
|
|
static void proc_arq_vlr_fn_w_trace(struct osmo_fsm_inst *fi,
|
|
uint32_t event, void *data)
|
|
{
|
|
OSMO_ASSERT(event == PR_ARQ_E_TRACE_RES);
|
|
|
|
_proc_arq_vlr_post_trace(fi);
|
|
}
|
|
|
|
/* we have received the ID RESPONSE (IMEI) */
|
|
static void proc_arq_vlr_fn_w_imei(struct osmo_fsm_inst *fi,
|
|
uint32_t event, void *data)
|
|
{
|
|
OSMO_ASSERT(event == PR_ARQ_E_IMEI_RES);
|
|
|
|
_proc_arq_vlr_post_imei(fi);
|
|
}
|
|
|
|
/* MSC tells us that MS has acknowleded TMSI re-allocation */
|
|
static void proc_arq_vlr_fn_w_tmsi(struct osmo_fsm_inst *fi,
|
|
uint32_t event, void *data)
|
|
{
|
|
OSMO_ASSERT(event == PR_ARQ_E_TMSI_ACK);
|
|
|
|
/* FIXME: check confirmation? unfreeze? */
|
|
proc_arq_fsm_done(fi, VLR_PR_ARQ_RES_PASSED);
|
|
}
|
|
|
|
static const struct osmo_fsm_state proc_arq_vlr_states[] = {
|
|
[PR_ARQ_S_INIT] = {
|
|
.name = OSMO_STRINGIFY(PR_ARQ_S_INIT),
|
|
.in_event_mask = S(PR_ARQ_E_START),
|
|
.out_state_mask = S(PR_ARQ_S_DONE) |
|
|
S(PR_ARQ_S_WAIT_OBTAIN_IMSI) |
|
|
S(PR_ARQ_S_WAIT_AUTH) |
|
|
S(PR_ARQ_S_WAIT_UPD_LOC_CHILD) |
|
|
S(PR_ARQ_S_WAIT_SUB_PRES) |
|
|
S(PR_ARQ_S_WAIT_TRACE_SUB) |
|
|
S(PR_ARQ_S_WAIT_CHECK_IMEI) |
|
|
S(PR_ARQ_S_WAIT_TMSI_ACK),
|
|
.action = proc_arq_vlr_fn_init,
|
|
},
|
|
[PR_ARQ_S_WAIT_OBTAIN_IMSI] = {
|
|
.name = OSMO_STRINGIFY(PR_ARQ_S_WAIT_OBTAIN_IMSI),
|
|
.in_event_mask = S(PR_ARQ_E_ID_IMSI),
|
|
.out_state_mask = S(PR_ARQ_S_DONE) |
|
|
S(PR_ARQ_S_WAIT_AUTH) |
|
|
S(PR_ARQ_S_WAIT_UPD_LOC_CHILD) |
|
|
S(PR_ARQ_S_WAIT_SUB_PRES) |
|
|
S(PR_ARQ_S_WAIT_TRACE_SUB) |
|
|
S(PR_ARQ_S_WAIT_CHECK_IMEI) |
|
|
S(PR_ARQ_S_WAIT_TMSI_ACK),
|
|
.action = proc_arq_vlr_fn_w_obt_imsi,
|
|
},
|
|
[PR_ARQ_S_WAIT_AUTH] = {
|
|
.name = OSMO_STRINGIFY(PR_ARQ_S_WAIT_AUTH),
|
|
.in_event_mask = S(PR_ARQ_E_AUTH_RES),
|
|
.out_state_mask = S(PR_ARQ_S_DONE) |
|
|
S(PR_ARQ_S_WAIT_CIPH) |
|
|
S(PR_ARQ_S_WAIT_UPD_LOC_CHILD) |
|
|
S(PR_ARQ_S_WAIT_SUB_PRES) |
|
|
S(PR_ARQ_S_WAIT_TRACE_SUB) |
|
|
S(PR_ARQ_S_WAIT_CHECK_IMEI) |
|
|
S(PR_ARQ_S_WAIT_TMSI_ACK),
|
|
.action = proc_arq_vlr_fn_w_auth,
|
|
},
|
|
[PR_ARQ_S_WAIT_CIPH] = {
|
|
.name = OSMO_STRINGIFY(PR_ARQ_S_WAIT_CIPH),
|
|
.in_event_mask = S(PR_ARQ_E_CIPH_RES),
|
|
.out_state_mask = S(PR_ARQ_S_DONE) |
|
|
S(PR_ARQ_S_WAIT_UPD_LOC_CHILD) |
|
|
S(PR_ARQ_S_WAIT_SUB_PRES) |
|
|
S(PR_ARQ_S_WAIT_TRACE_SUB) |
|
|
S(PR_ARQ_S_WAIT_CHECK_IMEI) |
|
|
S(PR_ARQ_S_WAIT_TMSI_ACK),
|
|
.action = proc_arq_vlr_fn_w_ciph,
|
|
},
|
|
[PR_ARQ_S_WAIT_UPD_LOC_CHILD] = {
|
|
.name = OSMO_STRINGIFY(PR_ARQ_S_WAIT_UPD_LOC_CHILD),
|
|
.in_event_mask = S(PR_ARQ_E_UPD_LOC_RES),
|
|
.out_state_mask = S(PR_ARQ_S_DONE) |
|
|
S(PR_ARQ_S_WAIT_SUB_PRES) |
|
|
S(PR_ARQ_S_WAIT_TRACE_SUB) |
|
|
S(PR_ARQ_S_WAIT_CHECK_IMEI) |
|
|
S(PR_ARQ_S_WAIT_TMSI_ACK),
|
|
.action = proc_arq_vlr_fn_w_upd_loc,
|
|
},
|
|
[PR_ARQ_S_WAIT_SUB_PRES] = {
|
|
.name = OSMO_STRINGIFY(PR_ARQ_S_WAIT_SUB_PRES),
|
|
.in_event_mask = S(PR_ARQ_E_PRES_RES),
|
|
.out_state_mask = S(PR_ARQ_S_DONE) |
|
|
S(PR_ARQ_S_WAIT_TRACE_SUB) |
|
|
S(PR_ARQ_S_WAIT_CHECK_IMEI) |
|
|
S(PR_ARQ_S_WAIT_TMSI_ACK),
|
|
.action = proc_arq_vlr_fn_w_pres,
|
|
},
|
|
[PR_ARQ_S_WAIT_TRACE_SUB] = {
|
|
.name = OSMO_STRINGIFY(PR_ARQ_S_WAIT_TRACE_SUB),
|
|
.in_event_mask = S(PR_ARQ_E_TRACE_RES),
|
|
.out_state_mask = S(PR_ARQ_S_DONE) |
|
|
S(PR_ARQ_S_WAIT_CHECK_IMEI) |
|
|
S(PR_ARQ_S_WAIT_TMSI_ACK),
|
|
.action = proc_arq_vlr_fn_w_trace,
|
|
},
|
|
[PR_ARQ_S_WAIT_CHECK_IMEI] = {
|
|
.name = OSMO_STRINGIFY(PR_ARQ_S_WAIT_CHECK_IMEI),
|
|
.in_event_mask = S(PR_ARQ_E_IMEI_RES),
|
|
.out_state_mask = S(PR_ARQ_S_DONE) |
|
|
S(PR_ARQ_S_WAIT_TMSI_ACK),
|
|
.action = proc_arq_vlr_fn_w_imei,
|
|
},
|
|
[PR_ARQ_S_WAIT_TMSI_ACK] = {
|
|
.name = OSMO_STRINGIFY(PR_ARQ_S_WAIT_TMSI_ACK),
|
|
.in_event_mask = S(PR_ARQ_E_TMSI_ACK),
|
|
.out_state_mask = S(PR_ARQ_S_DONE),
|
|
.action = proc_arq_vlr_fn_w_tmsi,
|
|
},
|
|
[PR_ARQ_S_DONE] = {
|
|
.name = OSMO_STRINGIFY(PR_ARQ_S_DONE),
|
|
.onenter = proc_arq_vlr_dispatch_result,
|
|
},
|
|
};
|
|
|
|
static struct osmo_fsm proc_arq_vlr_fsm = {
|
|
.name = "Process_Access_Request_VLR",
|
|
.states = proc_arq_vlr_states,
|
|
.num_states = ARRAY_SIZE(proc_arq_vlr_states),
|
|
.allstate_event_mask = 0,
|
|
.allstate_action = NULL,
|
|
.log_subsys = DVLR,
|
|
.event_names = proc_arq_vlr_event_names,
|
|
.cleanup = proc_arq_vlr_cleanup,
|
|
};
|
|
|
|
void
|
|
vlr_proc_acc_req(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_parq_type type, const uint8_t *mi_lv,
|
|
const struct osmo_location_area_id *lai,
|
|
bool authentication_required,
|
|
enum vlr_ciph ciphering_required,
|
|
bool is_r99, bool is_utran)
|
|
{
|
|
struct osmo_fsm_inst *fi;
|
|
struct proc_arq_priv *par;
|
|
char mi_string[GSM48_MI_SIZE];
|
|
uint8_t mi_type;
|
|
|
|
fi = osmo_fsm_inst_alloc_child(&proc_arq_vlr_fsm, parent,
|
|
parent_event_failure);
|
|
if (!fi)
|
|
return;
|
|
|
|
par = talloc_zero(fi, struct proc_arq_priv);
|
|
fi->priv = par;
|
|
par->vlr = vlr;
|
|
par->msc_conn_ref = msc_conn_ref;
|
|
par->type = type;
|
|
par->lai = *lai;
|
|
par->parent_event_success = parent_event_success;
|
|
par->parent_event_failure = parent_event_failure;
|
|
par->parent_event_data = parent_event_data;
|
|
par->authentication_required = authentication_required;
|
|
par->ciphering_required = ciphering_required;
|
|
par->is_r99 = is_r99;
|
|
par->is_utran = is_utran;
|
|
|
|
LOGPFSM(fi, "rev=%s net=%s%s%s\n",
|
|
is_r99 ? "R99" : "GSM",
|
|
is_utran ? "UTRAN" : "GERAN",
|
|
(authentication_required || ciphering_required)?
|
|
" Auth" : " (no Auth)",
|
|
(authentication_required || ciphering_required)?
|
|
(ciphering_required? "+Ciph" : " (no Ciph)")
|
|
: "");
|
|
|
|
if (is_utran && !authentication_required)
|
|
LOGPFSML(fi, LOGL_ERROR,
|
|
"Authentication off on UTRAN network. Good luck.\n");
|
|
|
|
gsm48_mi_to_string(mi_string, sizeof(mi_string), mi_lv+1, mi_lv[0]);
|
|
mi_type = mi_lv[1] & GSM_MI_TYPE_MASK;
|
|
switch (mi_type) {
|
|
case GSM_MI_TYPE_IMSI:
|
|
strncpy(par->imsi, mi_string, sizeof(par->imsi)-1);
|
|
par->imsi[sizeof(par->imsi)-1] = '\0';
|
|
par->by_tmsi = false;
|
|
break;
|
|
case GSM_MI_TYPE_TMSI:
|
|
par->by_tmsi = true;
|
|
par->tmsi = osmo_load32be(mi_lv+2);
|
|
break;
|
|
case GSM_MI_TYPE_IMEI:
|
|
/* TODO: IMEI (emergency call) */
|
|
default:
|
|
/* FIXME: directly send reject? */
|
|
proc_arq_fsm_done(fi, VLR_PR_ARQ_RES_UNIDENT_SUBSCR);
|
|
return;
|
|
}
|
|
|
|
osmo_fsm_inst_dispatch(fi, PR_ARQ_E_START, NULL);
|
|
}
|
|
|
|
/* Gracefully terminate an FSM created by vlr_proc_acc_req() in case of
|
|
* external timeout (i.e. from MSC). */
|
|
void vlr_parq_conn_timeout(struct osmo_fsm_inst *fi)
|
|
{
|
|
if (!fi || fi->state == PR_ARQ_S_DONE)
|
|
return;
|
|
LOGPFSM(fi, "Connection timed out\n");
|
|
proc_arq_fsm_done(fi, VLR_PR_ARQ_RES_TIMEOUT);
|
|
}
|
|
|
|
|
|
#if 0
|
|
/***********************************************************************
|
|
* Update_Location_Child_VLR, TS 29.002 Chapter 25.4.4
|
|
***********************************************************************/
|
|
|
|
enum upd_loc_child_vlr_state {
|
|
ULC_S_IDLE,
|
|
ULC_S_WAIT_HLR_RESP,
|
|
ULC_S_DONE,
|
|
};
|
|
|
|
enum upd_loc_child_vlr_event {
|
|
ULC_E_START,
|
|
};
|
|
|
|
static const struct value_string upd_loc_child_vlr_event_names[] = {
|
|
{ ULC_E_START, "START" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static void upd_loc_child_f_idle(struct osmo_fsm_inst *fi, uint32_t event,
|
|
void *data)
|
|
{
|
|
OSMO_ASSERT(event == ULC_E_START);
|
|
|
|
/* send update location */
|
|
}
|
|
|
|
static void upd_loc_child_f_w_hlr(struct osmo_fsm_inst *fi, uint32_t event,
|
|
void *data)
|
|
{
|
|
}
|
|
|
|
static const struct osmo_fsm_state upd_loc_child_vlr_states[] = {
|
|
[ULC_S_IDLE] = {
|
|
.in_event_mask = ,
|
|
.out_state_mask = S(ULC_S_WAIT_HLR_RESP) |
|
|
S(ULC_S_DONE),
|
|
.name = "IDLE",
|
|
.action = upd_loc_child_f_idle,
|
|
},
|
|
[ULC_S_WAIT_HLR_RESP] = {
|
|
.in_event_mask = ,
|
|
.out_state_mask = S(ULC_S_DONE),
|
|
.name = "WAIT-HLR-RESP",
|
|
.action = upd_loc_child_f_w_hlr,
|
|
},
|
|
[ULC_S_DONE] = {
|
|
.name = "DONE",
|
|
},
|
|
};
|
|
|
|
static struct osmo_fsm upd_loc_child_vlr_fsm = {
|
|
.name = "Update_Location_Child_VLR",
|
|
.states = upd_loc_child_vlr_states,
|
|
.num_states = ARRAY_SIZE(upd_loc_child_vlr_states),
|
|
.log_subsys = DVLR,
|
|
.event_names = upd_loc_child_vlr_event_names,
|
|
};
|
|
#endif
|
|
|
|
void vlr_parq_fsm_init(void)
|
|
{
|
|
//osmo_fsm_register(&upd_loc_child_vlr_fsm);
|
|
osmo_fsm_register(&proc_arq_vlr_fsm);
|
|
}
|