mirror of https://github.com/PentHertz/srsLTE.git
nas: initialize ctxt variable and only check ksi if ctxt is present
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@ -44,7 +44,7 @@ namespace srsue {
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********************************************************************/
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********************************************************************/
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nas::nas()
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nas::nas()
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: state(EMM_STATE_DEREGISTERED), plmn_selection(PLMN_SELECTED), have_guti(false), ip_addr(0), eps_bearer_id(0)
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: state(EMM_STATE_DEREGISTERED), plmn_selection(PLMN_SELECTED), have_guti(false), have_ctxt(false), ip_addr(0), eps_bearer_id(0)
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{
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{
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ctxt.rx_count = 0;
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ctxt.rx_count = 0;
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ctxt.tx_count = 0;
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ctxt.tx_count = 0;
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@ -548,13 +548,15 @@ void nas::parse_security_mode_command(uint32_t lcid, byte_buffer_t *pdu)
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return;
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return;
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}
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}
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if(sec_mode_cmd.nas_ksi.nas_ksi != ctxt.ksi)
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if (have_ctxt) {
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{
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if(sec_mode_cmd.nas_ksi.nas_ksi != ctxt.ksi) {
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nas_log->warning("Sending Security Mode Reject due to key set ID mismatch\n");
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nas_log->warning("Sending Security Mode Reject due to key set ID mismatch\n");
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send_security_mode_reject(LIBLTE_MME_EMM_CAUSE_SECURITY_MODE_REJECTED_UNSPECIFIED);
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send_security_mode_reject(LIBLTE_MME_EMM_CAUSE_SECURITY_MODE_REJECTED_UNSPECIFIED);
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pool->deallocate(pdu);
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pool->deallocate(pdu);
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return;
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return;
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}
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}
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}
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// MME is setting up security context
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// MME is setting up security context
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// TODO: check nonce (not sent by Amari)
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// TODO: check nonce (not sent by Amari)
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@ -744,7 +746,7 @@ void nas::send_attach_request() {
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nas_log->info("Sending attach request\n");
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nas_log->info("Sending attach request\n");
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rrc->write_sdu(cfg.lcid, msg);
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rrc->write_sdu(cfg.lcid, msg);
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if(have_ctxt) {
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if (have_ctxt) {
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ctxt.tx_count++;
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ctxt.tx_count++;
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}
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}
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}
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}
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