2017-03-27 10:32:24 +00:00
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#define TRACE_MODULE _emm_sm
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2017-03-05 07:49:57 +00:00
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#include "core_debug.h"
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2018-01-04 11:38:22 +00:00
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#include "nas/nas_message.h"
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#include "fd/fd_lib.h"
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#include "fd/s6a/s6a_message.h"
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2017-03-26 06:34:34 +00:00
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2017-04-04 01:49:19 +00:00
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#include "mme_event.h"
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2017-08-01 22:17:12 +00:00
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#include "mme_kdf.h"
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2017-08-07 22:58:13 +00:00
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#include "s1ap_handler.h"
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2017-08-25 11:31:08 +00:00
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#include "mme_fd_path.h"
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2017-08-10 07:47:18 +00:00
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#include "emm_handler.h"
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#include "emm_build.h"
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#include "esm_handler.h"
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2017-09-04 04:04:35 +00:00
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#include "nas_path.h"
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2017-09-08 07:46:37 +00:00
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#include "s1ap_path.h"
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2017-09-07 14:51:06 +00:00
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#include "mme_gtp_path.h"
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2018-02-02 06:59:21 +00:00
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#include "mme_path.h"
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2017-11-30 11:13:15 +00:00
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#include "mme_sm.h"
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2017-03-06 00:00:37 +00:00
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2017-04-11 00:32:34 +00:00
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void emm_state_initial(fsm_t *s, event_t *e)
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2017-03-05 07:49:57 +00:00
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{
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d_assert(s, return, "Null param");
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2017-08-02 10:33:57 +00:00
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mme_sm_trace(3, e);
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2017-03-05 07:49:57 +00:00
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2018-01-23 08:18:18 +00:00
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FSM_TRAN(s, &emm_state_de_registered);
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2017-03-05 07:49:57 +00:00
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}
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2017-04-11 00:32:34 +00:00
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void emm_state_final(fsm_t *s, event_t *e)
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2017-03-05 07:49:57 +00:00
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{
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d_assert(s, return, "Null param");
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2017-08-02 10:33:57 +00:00
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mme_sm_trace(3, e);
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2017-03-05 07:49:57 +00:00
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}
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2018-01-23 08:18:18 +00:00
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static void common_register_state(fsm_t *s, event_t *e);
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2018-01-22 07:35:12 +00:00
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2018-01-23 08:18:18 +00:00
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void emm_state_de_registered(fsm_t *s, event_t *e)
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2017-03-05 07:49:57 +00:00
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{
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2018-01-22 07:35:12 +00:00
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d_assert(s, return, "Null param");
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d_assert(e, return, "Null param");
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2017-09-03 15:06:39 +00:00
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2018-01-22 07:35:12 +00:00
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mme_sm_trace(3, e);
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2018-01-23 08:18:18 +00:00
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common_register_state(s, e);
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2018-01-22 07:35:12 +00:00
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}
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2018-01-23 08:18:18 +00:00
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void emm_state_registered(fsm_t *s, event_t *e)
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2018-01-22 07:35:12 +00:00
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{
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2017-03-05 07:49:57 +00:00
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d_assert(s, return, "Null param");
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d_assert(e, return, "Null param");
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2017-08-02 10:33:57 +00:00
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mme_sm_trace(3, e);
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2017-03-05 07:49:57 +00:00
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2018-01-23 08:18:18 +00:00
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common_register_state(s, e);
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2018-01-22 07:35:12 +00:00
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}
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2018-01-23 08:18:18 +00:00
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static void common_register_state(fsm_t *s, event_t *e)
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2018-01-22 07:35:12 +00:00
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{
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status_t rv;
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2018-01-22 07:53:47 +00:00
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enb_ue_t *enb_ue = NULL;
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mme_ue_t *mme_ue = NULL;
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mme_ue = mme_ue_find(event_get_param1(e));
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2017-09-03 15:06:39 +00:00
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d_assert(mme_ue, return, "Null param");
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2017-03-05 07:49:57 +00:00
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switch (event_get(e))
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{
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case FSM_ENTRY_SIG:
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{
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2018-01-22 07:35:12 +00:00
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return;
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2017-03-05 07:49:57 +00:00
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}
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case FSM_EXIT_SIG:
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{
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2018-01-22 07:35:12 +00:00
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return;
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2017-03-05 07:49:57 +00:00
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}
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2017-08-25 15:25:55 +00:00
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case MME_EVT_EMM_MESSAGE:
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2017-03-05 07:49:57 +00:00
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{
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2017-09-03 15:06:39 +00:00
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nas_message_t *message = (nas_message_t *)event_get_param4(e);
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2018-01-22 07:35:12 +00:00
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d_assert(message, return, "Null param");
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2017-03-05 08:36:16 +00:00
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2017-09-08 22:56:42 +00:00
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if (message->emm.h.security_header_type
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== NAS_SECURITY_HEADER_FOR_SERVICE_REQUEST_MESSAGE)
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{
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2018-01-22 14:14:20 +00:00
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d_trace(3, "[EMM] Service request\n");
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2018-01-02 09:18:45 +00:00
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rv = emm_handle_service_request(
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2017-09-08 22:56:42 +00:00
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mme_ue, &message->emm.service_request);
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2018-01-02 09:18:45 +00:00
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if (rv != CORE_OK)
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{
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2018-01-22 07:35:12 +00:00
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d_error("emm_handle_service_request() failed");
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2018-01-02 09:18:45 +00:00
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FSM_TRAN(s, emm_state_exception);
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2018-01-22 07:35:12 +00:00
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return;
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2018-01-02 09:18:45 +00:00
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}
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2017-09-23 08:17:30 +00:00
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2018-01-22 07:35:12 +00:00
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if (!MME_UE_HAVE_IMSI(mme_ue))
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2017-09-23 08:17:30 +00:00
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{
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2018-01-22 07:35:12 +00:00
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d_warn("Unknown UE");
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rv = nas_send_service_reject(mme_ue,
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2018-01-21 08:36:59 +00:00
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EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
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2018-01-28 13:08:53 +00:00
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d_assert(rv == CORE_OK,,
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2018-01-22 07:35:12 +00:00
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"nas_send_service_reject() failed");
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FSM_TRAN(s, &emm_state_exception);
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return;
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2017-09-23 08:17:30 +00:00
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}
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2018-01-22 07:35:12 +00:00
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if (!SECURITY_CONTEXT_IS_VALID(mme_ue))
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2017-09-23 08:17:30 +00:00
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{
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2018-01-22 14:14:20 +00:00
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d_warn("No Security Context : IMSI[%s]", mme_ue->imsi_bcd);
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2018-01-22 02:40:26 +00:00
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rv = nas_send_service_reject(mme_ue,
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2018-01-20 06:09:30 +00:00
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EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
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2018-01-28 13:08:53 +00:00
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d_assert(rv == CORE_OK,,
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2018-01-22 07:35:12 +00:00
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"nas_send_service_reject() failed");
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enb_ue = mme_ue->enb_ue;
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d_assert(enb_ue, return, "No ENB UE context");
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rv = s1ap_send_ue_context_release_command(enb_ue,
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S1ap_Cause_PR_nas, S1ap_CauseNas_normal_release,
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2018-02-01 17:48:55 +00:00
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S1AP_UE_CTX_REL_UNLINK_MME_UE_CONTEXT, 0);
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2018-01-22 02:40:26 +00:00
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d_assert(rv == CORE_OK,,
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2018-01-22 14:14:20 +00:00
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"s1ap_send_ue_context_release_command() failed");
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2018-01-22 07:53:47 +00:00
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return;
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2017-09-23 08:17:30 +00:00
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}
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2018-01-22 07:35:12 +00:00
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rv = s1ap_send_initial_context_setup_request(mme_ue);
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d_assert(rv == CORE_OK, return,
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"s1ap_send_initial_context_setup_request() failed");
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return;
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2017-09-08 22:56:42 +00:00
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}
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2017-04-09 05:57:07 +00:00
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switch(message->emm.h.message_type)
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2017-03-05 09:09:34 +00:00
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{
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2018-01-22 07:35:12 +00:00
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case NAS_IDENTITY_RESPONSE:
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2017-03-05 09:09:34 +00:00
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{
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2018-01-22 14:14:20 +00:00
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d_trace(3, "[EMM] Identity response\n");
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2018-01-22 07:35:12 +00:00
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rv = emm_handle_identity_response(mme_ue,
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&message->emm.identity_response);
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2018-01-02 09:18:45 +00:00
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if (rv != CORE_OK)
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{
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2018-01-23 08:18:18 +00:00
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d_error("emm_handle_identity_response() failed");
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2018-01-02 09:18:45 +00:00
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FSM_TRAN(s, emm_state_exception);
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2018-01-22 07:35:12 +00:00
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return;
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2018-01-02 09:18:45 +00:00
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}
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2017-09-23 08:17:30 +00:00
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2018-01-22 07:35:12 +00:00
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if (!MME_UE_HAVE_IMSI(mme_ue))
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2017-09-23 08:17:30 +00:00
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{
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2018-01-22 07:35:12 +00:00
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d_error("No IMSI");
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2018-01-22 08:08:53 +00:00
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FSM_TRAN(s, emm_state_exception);
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2018-01-22 07:35:12 +00:00
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return;
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2017-09-23 08:17:30 +00:00
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}
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2018-01-22 07:35:12 +00:00
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2018-01-23 06:38:07 +00:00
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d_trace(5, " IMSI[%s]\n", mme_ue->imsi_bcd);
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2018-01-22 07:35:12 +00:00
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break;
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}
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case NAS_ATTACH_REQUEST:
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{
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2018-01-22 14:14:20 +00:00
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d_trace(3, "[EMM] Attach request\n", mme_ue->imsi_bcd);
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2018-01-22 07:35:12 +00:00
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rv = emm_handle_attach_request(
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mme_ue, &message->emm.attach_request);
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if (rv != CORE_OK)
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2017-09-23 08:17:30 +00:00
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{
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2018-01-23 08:18:18 +00:00
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d_error("emm_handle_attach_request() failed");
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2018-01-22 07:35:12 +00:00
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FSM_TRAN(s, emm_state_exception);
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return;
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2017-09-23 08:17:30 +00:00
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}
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2017-03-05 09:09:34 +00:00
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break;
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}
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2017-09-08 22:56:42 +00:00
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case NAS_TRACKING_AREA_UPDATE_REQUEST:
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{
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2018-01-22 14:14:20 +00:00
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d_trace(3, "[EMM] Tracking area update request\n");
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2018-01-02 09:18:45 +00:00
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rv = emm_handle_tau_request(
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2017-09-08 22:56:42 +00:00
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mme_ue, &message->emm.tracking_area_update_request);
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2018-01-02 09:18:45 +00:00
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if (rv != CORE_OK)
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{
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2018-01-23 08:18:18 +00:00
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d_error("emm_handle_tau_request() failed");
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2018-01-02 09:18:45 +00:00
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FSM_TRAN(s, emm_state_exception);
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2018-01-22 07:35:12 +00:00
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return;
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2018-01-02 09:18:45 +00:00
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}
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2017-09-23 08:17:30 +00:00
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2017-09-08 22:56:42 +00:00
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break;
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}
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2018-01-22 07:53:47 +00:00
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case NAS_TRACKING_AREA_UPDATE_COMPLETE:
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{
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2018-01-22 14:14:20 +00:00
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d_trace(3, "[EMM] Tracking area update complete\n");
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2018-01-23 06:38:07 +00:00
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d_trace(5, " IMSI[%s]\n", mme_ue->imsi_bcd);
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2018-01-22 07:53:47 +00:00
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return;
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}
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2018-01-22 07:35:12 +00:00
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case NAS_EMM_STATUS:
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{
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2018-01-22 14:14:20 +00:00
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d_warn("[EMM] EMM STATUS : IMSI[%s] Cause[%d]",
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2018-01-22 07:35:12 +00:00
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mme_ue->imsi_bcd,
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message->emm.emm_status.emm_cause);
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FSM_TRAN(s, &emm_state_exception);
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return;
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}
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case NAS_DETACH_REQUEST:
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{
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2018-01-22 14:14:20 +00:00
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d_trace(3, "[EMM] Detach request\n");
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2018-01-23 06:38:07 +00:00
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d_trace(5, " IMSI[%s]\n", mme_ue->imsi_bcd);
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2018-01-28 13:08:53 +00:00
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rv = emm_handle_detach_request(
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2018-01-22 07:35:12 +00:00
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mme_ue, &message->emm.detach_request_from_ue);
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2018-01-28 13:08:53 +00:00
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if (rv != CORE_OK)
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{
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d_error("emm_handle_attach_request() failed");
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FSM_TRAN(s, emm_state_exception);
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return;
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}
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2018-02-02 06:59:21 +00:00
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rv = mme_send_detach_accept(mme_ue);
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d_assert(rv == CORE_OK,, "mme_send_detach_accept failed");
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2018-01-23 08:18:18 +00:00
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FSM_TRAN(s, &emm_state_de_registered);
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2018-01-22 07:35:12 +00:00
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return;
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}
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2017-09-08 22:56:42 +00:00
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default:
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{
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2018-01-22 14:14:20 +00:00
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d_warn("Unknown message[%d]", message->emm.h.message_type);
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2018-01-22 07:35:12 +00:00
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return;
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2017-09-08 22:56:42 +00:00
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}
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2017-09-03 15:06:39 +00:00
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}
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break;
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}
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2018-01-22 07:35:12 +00:00
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case MME_EVT_EMM_T3413:
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{
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if (mme_ue->max_paging_retry >= MAX_NUM_OF_PAGING)
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{
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/* Paging failed */
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2018-01-22 14:14:20 +00:00
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d_warn("[EMM] Paging to IMSI[%s] failed. Stop paging",
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2018-01-22 07:35:12 +00:00
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mme_ue->imsi_bcd);
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if (mme_ue->last_paging_msg)
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{
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pkbuf_free(mme_ue->last_paging_msg);
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mme_ue->last_paging_msg = NULL;
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}
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}
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2018-01-22 07:53:47 +00:00
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else
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{
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mme_ue->max_paging_retry++;
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s1ap_handle_paging(mme_ue);
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/* Start T3413 */
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tm_start(mme_ue->t3413);
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}
|
2018-01-22 07:35:12 +00:00
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return;
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}
|
2017-09-03 15:06:39 +00:00
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default:
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{
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2018-01-22 14:14:20 +00:00
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d_error("Unknown event[%s]", mme_event_get_name(e));
|
2018-01-22 07:35:12 +00:00
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return;
|
2017-09-03 15:06:39 +00:00
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}
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}
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2018-01-22 07:35:12 +00:00
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if (!MME_UE_HAVE_IMSI(mme_ue))
|
2017-09-03 15:06:39 +00:00
|
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{
|
2018-01-22 07:35:12 +00:00
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rv = nas_send_identity_request(mme_ue);
|
|
|
|
d_assert(rv == CORE_OK, return, "nas_send_identity_request() failed");
|
|
|
|
return;
|
|
|
|
}
|
2017-09-03 15:06:39 +00:00
|
|
|
|
2018-01-22 07:35:12 +00:00
|
|
|
switch(mme_ue->nas_eps.type)
|
|
|
|
{
|
|
|
|
case MME_EPS_TYPE_ATTACH_REQUEST:
|
2017-09-03 15:06:39 +00:00
|
|
|
{
|
2018-01-22 07:35:12 +00:00
|
|
|
if (SECURITY_CONTEXT_IS_VALID(mme_ue))
|
|
|
|
{
|
|
|
|
rv = nas_send_emm_to_esm(mme_ue,
|
|
|
|
&mme_ue->pdn_connectivity_request);
|
2018-01-22 14:14:20 +00:00
|
|
|
d_assert(rv == CORE_OK,, "nas_send_emm_to_esm() failed");
|
2018-01-22 07:35:12 +00:00
|
|
|
FSM_TRAN(s, &emm_state_initial_context_setup);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2018-02-02 12:09:37 +00:00
|
|
|
if (SESSION_CONTEXT_IS_VALID(mme_ue))
|
2018-01-22 07:35:12 +00:00
|
|
|
{
|
|
|
|
rv = mme_gtp_send_delete_all_sessions(mme_ue);
|
|
|
|
d_assert(rv == CORE_OK,,
|
|
|
|
"mme_gtp_send_delete_all_sessions() failed");
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
mme_s6a_send_air(mme_ue, NULL);
|
|
|
|
}
|
|
|
|
FSM_TRAN(s, &emm_state_authentication);
|
|
|
|
}
|
2017-09-03 15:06:39 +00:00
|
|
|
break;
|
|
|
|
}
|
2018-01-22 07:35:12 +00:00
|
|
|
case MME_EPS_TYPE_TAU_REQUEST:
|
2017-09-03 15:06:39 +00:00
|
|
|
{
|
2018-01-22 07:35:12 +00:00
|
|
|
if (SECURITY_CONTEXT_IS_VALID(mme_ue))
|
2017-09-03 15:06:39 +00:00
|
|
|
{
|
2018-01-22 07:35:12 +00:00
|
|
|
rv = nas_send_tau_accept(mme_ue);
|
2018-01-22 14:14:20 +00:00
|
|
|
d_assert(rv == CORE_OK,, "nas_send_tau_accept() failed");
|
2018-01-22 07:35:12 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2018-02-02 12:09:37 +00:00
|
|
|
if (SESSION_CONTEXT_IS_VALID(mme_ue))
|
2017-09-03 15:06:39 +00:00
|
|
|
{
|
2018-01-22 07:35:12 +00:00
|
|
|
mme_s6a_send_air(mme_ue, NULL);
|
2018-01-22 14:14:20 +00:00
|
|
|
FSM_TRAN(&mme_ue->sm, &emm_state_authentication);
|
2017-09-03 15:06:39 +00:00
|
|
|
}
|
2018-01-22 07:35:12 +00:00
|
|
|
else
|
2017-09-03 15:06:39 +00:00
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_warn("No PDN Connection : UE[%s]", mme_ue->imsi_bcd);
|
2018-01-22 07:35:12 +00:00
|
|
|
rv = nas_send_tau_reject(mme_ue,
|
|
|
|
EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
|
2018-01-22 14:14:20 +00:00
|
|
|
d_assert(rv == CORE_OK,, "nas_send_tau_reject() failed");
|
2018-01-22 07:35:12 +00:00
|
|
|
FSM_TRAN(s, emm_state_exception);
|
2017-09-03 15:06:39 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
2018-01-22 14:14:20 +00:00
|
|
|
d_assert(0,, "Invalid NAS-EPS[%d]", mme_ue->nas_eps.type);
|
2017-09-03 15:06:39 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2017-09-04 04:04:35 +00:00
|
|
|
void emm_state_authentication(fsm_t *s, event_t *e)
|
2017-09-03 15:06:39 +00:00
|
|
|
{
|
2018-02-02 06:59:21 +00:00
|
|
|
status_t rv;
|
2017-09-03 15:06:39 +00:00
|
|
|
mme_ue_t *mme_ue = NULL;
|
|
|
|
|
|
|
|
d_assert(s, return, "Null param");
|
|
|
|
d_assert(e, return, "Null param");
|
|
|
|
|
|
|
|
mme_sm_trace(3, e);
|
|
|
|
|
|
|
|
mme_ue = mme_ue_find(event_get_param1(e));
|
|
|
|
d_assert(mme_ue, return, "Null param");
|
|
|
|
|
|
|
|
switch (event_get(e))
|
|
|
|
{
|
|
|
|
case FSM_ENTRY_SIG:
|
|
|
|
{
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case FSM_EXIT_SIG:
|
|
|
|
{
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case MME_EVT_EMM_MESSAGE:
|
|
|
|
{
|
|
|
|
nas_message_t *message = (nas_message_t *)event_get_param4(e);
|
|
|
|
d_assert(message, break, "Null param");
|
|
|
|
|
|
|
|
switch(message->emm.h.message_type)
|
|
|
|
{
|
2017-03-06 12:45:41 +00:00
|
|
|
case NAS_AUTHENTICATION_RESPONSE:
|
|
|
|
{
|
2017-09-23 08:17:30 +00:00
|
|
|
nas_authentication_response_t *authentication_response =
|
|
|
|
&message->emm.authentication_response;
|
|
|
|
nas_authentication_response_parameter_t
|
|
|
|
*authentication_response_parameter =
|
|
|
|
&authentication_response->
|
|
|
|
authentication_response_parameter;
|
|
|
|
|
2018-01-22 14:14:20 +00:00
|
|
|
d_trace(3, "[EMM] Authentication response\n");
|
2018-01-23 06:38:07 +00:00
|
|
|
d_trace(5, " IMSI[%s]\n", mme_ue->imsi_bcd);
|
2018-01-22 14:14:20 +00:00
|
|
|
|
2017-09-23 08:17:30 +00:00
|
|
|
if (authentication_response_parameter->length !=
|
|
|
|
mme_ue->xres_len ||
|
|
|
|
memcmp(authentication_response_parameter->res,
|
|
|
|
mme_ue->xres, mme_ue->xres_len) != 0)
|
|
|
|
{
|
|
|
|
rv = nas_send_authentication_reject(mme_ue);
|
|
|
|
d_assert(rv == CORE_OK,, "nas send error");
|
2018-01-19 08:43:46 +00:00
|
|
|
FSM_TRAN(&mme_ue->sm, &emm_state_exception);
|
2017-09-23 08:17:30 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
FSM_TRAN(&mme_ue->sm, &emm_state_security_mode);
|
|
|
|
}
|
2017-09-04 04:04:35 +00:00
|
|
|
break;
|
|
|
|
}
|
2017-12-17 15:01:07 +00:00
|
|
|
case NAS_AUTHENTICATION_FAILURE:
|
|
|
|
{
|
|
|
|
nas_authentication_failure_t *authentication_failure =
|
|
|
|
&message->emm.authentication_failure;
|
|
|
|
nas_authentication_failure_parameter_t
|
|
|
|
*authentication_failure_parameter =
|
|
|
|
&authentication_failure->
|
|
|
|
authentication_failure_parameter;
|
|
|
|
|
2018-01-22 14:14:20 +00:00
|
|
|
d_trace(3, "[EMM] Authentication failure\n");
|
2018-01-23 06:38:07 +00:00
|
|
|
d_trace(5, " IMSI[%s]\n", mme_ue->imsi_bcd);
|
2018-01-22 14:14:20 +00:00
|
|
|
|
2017-12-17 15:01:07 +00:00
|
|
|
mme_s6a_send_air(mme_ue, authentication_failure_parameter);
|
|
|
|
break;
|
|
|
|
}
|
2017-09-04 04:04:35 +00:00
|
|
|
case NAS_EMM_STATUS:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_warn("[EMM] EMM STATUS : IMSI[%s] Cause[%d]",
|
2018-01-19 06:37:25 +00:00
|
|
|
mme_ue->imsi_bcd,
|
|
|
|
message->emm.emm_status.emm_cause);
|
|
|
|
FSM_TRAN(s, &emm_state_exception);
|
2017-09-04 04:04:35 +00:00
|
|
|
break;
|
|
|
|
}
|
2018-02-02 06:59:21 +00:00
|
|
|
case NAS_DETACH_REQUEST:
|
|
|
|
{
|
|
|
|
d_trace(3, "[EMM] Detach request\n");
|
|
|
|
d_trace(5, " IMSI[%s]\n", mme_ue->imsi_bcd);
|
|
|
|
rv = emm_handle_detach_request(
|
|
|
|
mme_ue, &message->emm.detach_request_from_ue);
|
|
|
|
if (rv != CORE_OK)
|
|
|
|
{
|
|
|
|
d_error("emm_handle_attach_request() failed");
|
|
|
|
FSM_TRAN(s, emm_state_exception);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
rv = mme_send_detach_accept(mme_ue);
|
|
|
|
d_assert(rv == CORE_OK,, "mme_send_detach_accept failed");
|
|
|
|
|
|
|
|
FSM_TRAN(s, &emm_state_de_registered);
|
|
|
|
break;
|
|
|
|
}
|
2017-09-04 04:04:35 +00:00
|
|
|
default:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_warn("Unknown message[%d]", message->emm.h.message_type);
|
2017-03-07 05:47:17 +00:00
|
|
|
break;
|
|
|
|
}
|
2017-09-04 04:04:35 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_error("Unknown event[%s]", mme_event_get_name(e));
|
2017-09-04 04:04:35 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void emm_state_security_mode(fsm_t *s, event_t *e)
|
|
|
|
{
|
2018-02-02 06:59:21 +00:00
|
|
|
status_t rv;
|
2017-09-04 04:04:35 +00:00
|
|
|
mme_ue_t *mme_ue = NULL;
|
|
|
|
|
|
|
|
d_assert(s, return, "Null param");
|
|
|
|
d_assert(e, return, "Null param");
|
|
|
|
|
|
|
|
mme_sm_trace(3, e);
|
|
|
|
|
|
|
|
mme_ue = mme_ue_find(event_get_param1(e));
|
|
|
|
d_assert(mme_ue, return, "Null param");
|
|
|
|
|
|
|
|
switch (event_get(e))
|
|
|
|
{
|
|
|
|
case FSM_ENTRY_SIG:
|
|
|
|
{
|
|
|
|
pkbuf_t *emmbuf = NULL;
|
|
|
|
|
|
|
|
rv = emm_build_security_mode_command(&emmbuf, mme_ue);
|
|
|
|
d_assert(rv == CORE_OK && emmbuf, break, "emm build error");
|
|
|
|
|
|
|
|
rv = nas_send_to_downlink_nas_transport(mme_ue, emmbuf);
|
|
|
|
d_assert(rv == CORE_OK && emmbuf, break, "emm send error");
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case FSM_EXIT_SIG:
|
|
|
|
{
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case MME_EVT_EMM_MESSAGE:
|
|
|
|
{
|
|
|
|
nas_message_t *message = (nas_message_t *)event_get_param4(e);
|
|
|
|
d_assert(message, break, "Null param");
|
|
|
|
|
|
|
|
switch(message->emm.h.message_type)
|
|
|
|
{
|
2017-03-07 05:47:17 +00:00
|
|
|
case NAS_SECURITY_MODE_COMPLETE:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_trace(3, "[EMM] Security mode complete\n");
|
2018-01-23 06:38:07 +00:00
|
|
|
d_trace(5, " IMSI[%s]\n", mme_ue->imsi_bcd);
|
2017-08-01 22:17:12 +00:00
|
|
|
|
|
|
|
/* Update Kenb */
|
|
|
|
if (SECURITY_CONTEXT_IS_VALID(mme_ue))
|
2017-09-12 01:41:00 +00:00
|
|
|
{
|
2017-08-01 22:17:12 +00:00
|
|
|
mme_kdf_enb(mme_ue->kasme, mme_ue->ul_count.i32,
|
|
|
|
mme_ue->kenb);
|
2017-09-12 01:41:00 +00:00
|
|
|
mme_kdf_nh(mme_ue->kasme, mme_ue->kenb, mme_ue->nh);
|
|
|
|
mme_ue->nhcc = 1;
|
|
|
|
}
|
2017-08-01 22:17:12 +00:00
|
|
|
|
2017-04-28 07:11:45 +00:00
|
|
|
mme_s6a_send_ulr(mme_ue);
|
2018-01-19 23:52:59 +00:00
|
|
|
if (mme_ue->nas_eps.type == MME_EPS_TYPE_ATTACH_REQUEST)
|
|
|
|
{
|
|
|
|
FSM_TRAN(s, &emm_state_initial_context_setup);
|
|
|
|
}
|
|
|
|
else if (mme_ue->nas_eps.type ==
|
|
|
|
MME_EPS_TYPE_SERVICE_REQUEST ||
|
|
|
|
mme_ue->nas_eps.type == MME_EPS_TYPE_TAU_REQUEST)
|
|
|
|
{
|
2018-01-23 08:18:18 +00:00
|
|
|
FSM_TRAN(s, &emm_state_registered);
|
2018-01-19 23:52:59 +00:00
|
|
|
}
|
2018-01-22 07:53:47 +00:00
|
|
|
else
|
2018-01-22 14:14:20 +00:00
|
|
|
d_assert(0,, "Invalid NAS_EPS[%d]",
|
2018-01-22 07:53:47 +00:00
|
|
|
mme_ue->nas_eps.type);
|
2017-03-06 12:45:41 +00:00
|
|
|
break;
|
|
|
|
}
|
2018-01-19 08:30:18 +00:00
|
|
|
case NAS_SECURITY_MODE_REJECT:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_warn("[EMM] Security mode reject : IMSI[%s] Cause[%d]",
|
|
|
|
mme_ue->imsi_bcd,
|
2018-01-19 08:30:18 +00:00
|
|
|
message->emm.security_mode_reject.emm_cause);
|
|
|
|
FSM_TRAN(s, &emm_state_exception);
|
|
|
|
break;
|
|
|
|
}
|
2017-09-03 15:06:39 +00:00
|
|
|
case NAS_EMM_STATUS:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_warn("[EMM] EMM STATUS : IMSI[%s] Cause[%d]",
|
2018-01-19 06:37:25 +00:00
|
|
|
mme_ue->imsi_bcd,
|
|
|
|
message->emm.emm_status.emm_cause);
|
|
|
|
FSM_TRAN(s, &emm_state_exception);
|
2017-09-03 15:06:39 +00:00
|
|
|
break;
|
|
|
|
}
|
2018-02-02 06:59:21 +00:00
|
|
|
case NAS_DETACH_REQUEST:
|
|
|
|
{
|
|
|
|
d_trace(3, "[EMM] Detach request\n");
|
|
|
|
d_trace(5, " IMSI[%s]\n", mme_ue->imsi_bcd);
|
|
|
|
rv = emm_handle_detach_request(
|
|
|
|
mme_ue, &message->emm.detach_request_from_ue);
|
|
|
|
if (rv != CORE_OK)
|
|
|
|
{
|
|
|
|
d_error("emm_handle_attach_request() failed");
|
|
|
|
FSM_TRAN(s, emm_state_exception);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
rv = mme_send_detach_accept(mme_ue);
|
|
|
|
d_assert(rv == CORE_OK,, "mme_send_detach_accept failed");
|
|
|
|
|
|
|
|
FSM_TRAN(s, &emm_state_de_registered);
|
|
|
|
break;
|
|
|
|
}
|
2017-09-03 15:06:39 +00:00
|
|
|
default:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_warn("Unknown message[%d]", message->emm.h.message_type);
|
2017-09-03 15:06:39 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_error("Unknown event[%s]", mme_event_get_name(e));
|
2017-09-03 15:06:39 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2018-01-16 13:14:59 +00:00
|
|
|
void emm_state_initial_context_setup(fsm_t *s, event_t *e)
|
2017-09-03 15:06:39 +00:00
|
|
|
{
|
2018-01-02 09:18:45 +00:00
|
|
|
status_t rv;
|
2017-09-03 15:06:39 +00:00
|
|
|
mme_ue_t *mme_ue = NULL;
|
|
|
|
|
|
|
|
d_assert(s, return, "Null param");
|
|
|
|
d_assert(e, return, "Null param");
|
|
|
|
|
|
|
|
mme_sm_trace(3, e);
|
|
|
|
|
|
|
|
mme_ue = mme_ue_find(event_get_param1(e));
|
|
|
|
d_assert(mme_ue, return, "Null param");
|
|
|
|
|
|
|
|
switch (event_get(e))
|
|
|
|
{
|
|
|
|
case FSM_ENTRY_SIG:
|
|
|
|
{
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case FSM_EXIT_SIG:
|
|
|
|
{
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case MME_EVT_EMM_MESSAGE:
|
|
|
|
{
|
|
|
|
nas_message_t *message = (nas_message_t *)event_get_param4(e);
|
|
|
|
d_assert(message, break, "Null param");
|
|
|
|
|
|
|
|
switch(message->emm.h.message_type)
|
|
|
|
{
|
2017-04-13 14:14:59 +00:00
|
|
|
case NAS_ATTACH_COMPLETE:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_trace(3, "[EMM] Attach complete\n");
|
2018-01-23 06:38:07 +00:00
|
|
|
d_trace(5, " IMSI[%s]\n", mme_ue->imsi_bcd);
|
2018-01-02 09:18:45 +00:00
|
|
|
rv = emm_handle_attach_complete(
|
2017-04-28 07:11:45 +00:00
|
|
|
mme_ue, &message->emm.attach_complete);
|
2018-01-02 09:18:45 +00:00
|
|
|
if (rv != CORE_OK)
|
|
|
|
{
|
2018-01-19 07:29:21 +00:00
|
|
|
d_error("emm_handle_attach_complete() failed "
|
|
|
|
"in emm_state_initial_context_setup");
|
2018-01-02 09:18:45 +00:00
|
|
|
FSM_TRAN(s, emm_state_exception);
|
|
|
|
break;
|
|
|
|
}
|
2018-01-23 08:18:18 +00:00
|
|
|
FSM_TRAN(s, &emm_state_registered);
|
2017-04-13 14:14:59 +00:00
|
|
|
break;
|
|
|
|
}
|
2017-04-14 11:20:00 +00:00
|
|
|
case NAS_EMM_STATUS:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_warn("[EMM] EMM STATUS : IMSI[%s] Cause[%d]",
|
2018-01-19 06:37:25 +00:00
|
|
|
mme_ue->imsi_bcd,
|
|
|
|
message->emm.emm_status.emm_cause);
|
|
|
|
FSM_TRAN(s, &emm_state_exception);
|
2017-09-03 15:06:39 +00:00
|
|
|
break;
|
|
|
|
}
|
2018-02-02 06:59:21 +00:00
|
|
|
case NAS_DETACH_REQUEST:
|
|
|
|
{
|
|
|
|
d_trace(3, "[EMM] Detach request\n");
|
|
|
|
d_trace(5, " IMSI[%s]\n", mme_ue->imsi_bcd);
|
|
|
|
rv = emm_handle_detach_request(
|
|
|
|
mme_ue, &message->emm.detach_request_from_ue);
|
|
|
|
if (rv != CORE_OK)
|
|
|
|
{
|
|
|
|
d_error("emm_handle_attach_request() failed");
|
|
|
|
FSM_TRAN(s, emm_state_exception);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
rv = mme_send_detach_accept(mme_ue);
|
|
|
|
d_assert(rv == CORE_OK,, "mme_send_detach_accept failed");
|
|
|
|
|
|
|
|
FSM_TRAN(s, &emm_state_de_registered);
|
|
|
|
break;
|
|
|
|
}
|
2017-09-03 15:06:39 +00:00
|
|
|
default:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_warn("Unknown message[%d]",
|
2017-09-03 15:06:39 +00:00
|
|
|
message->emm.h.message_type);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_error("Unknown event[%s]", mme_event_get_name(e));
|
2017-09-03 15:06:39 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2017-09-06 15:37:16 +00:00
|
|
|
void emm_state_exception(fsm_t *s, event_t *e)
|
|
|
|
{
|
|
|
|
mme_sm_trace(3, e);
|
|
|
|
|
|
|
|
switch (event_get(e))
|
|
|
|
{
|
|
|
|
case FSM_ENTRY_SIG:
|
|
|
|
{
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case FSM_EXIT_SIG:
|
|
|
|
{
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
{
|
2018-01-22 14:14:20 +00:00
|
|
|
d_error("Unknown event[%s]", mme_event_get_name(e));
|
2017-09-06 15:37:16 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|