mirror of
https://github.com/intel/linux-sgx
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Li, Xun
130 lines
4.0 KiB
C++
130 lines
4.0 KiB
C++
/*
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* Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "TimeBasedDRM.h"
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#include "sgx_urts.h"
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#include "sgx_uae_service.h"
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#include "DRM_enclave_u.h"
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#include <iostream>
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using namespace std;
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#define ENCLAVE_NAME "DRM_enclave.signed.so"
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TimeBasedDRM::TimeBasedDRM(void): enclave_id(0)
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{
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int updated = 0;
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sgx_status_t sgx_ret = SGX_ERROR_UNEXPECTED;
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sgx_ret = sgx_create_enclave(ENCLAVE_NAME, SGX_DEBUG_FLAG,
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&launch_token, &updated, &enclave_id, NULL);
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if (sgx_ret)
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{
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cerr<<"cannot create enclave, error code = 0x"<< hex<< sgx_ret <<endl;
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}
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}
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TimeBasedDRM::~TimeBasedDRM(void)
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{
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if(enclave_id)
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sgx_destroy_enclave(enclave_id);
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}
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uint32_t TimeBasedDRM:: init(uint8_t* stored_time_based_policy)
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{
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sgx_status_t sgx_ret = SGX_ERROR_UNEXPECTED;
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sgx_ps_cap_t ps_cap;
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memset(&ps_cap, 0, sizeof(sgx_ps_cap_t));
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sgx_ret = sgx_get_ps_cap(&ps_cap);
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if (sgx_ret)
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{
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cerr<<"cannot get platform service capability, error code = 0x"<< hex<<
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sgx_ret <<endl;
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return sgx_ret;
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}
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if (!SGX_IS_TRUSTED_TIME_AVAILABLE(ps_cap))
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{
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cerr<<"trusted time is not supported"<<endl;
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return SGX_ERROR_SERVICE_UNAVAILABLE;
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}
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uint32_t enclave_ret = 0;
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sgx_ret = create_time_based_policy(enclave_id, &enclave_ret,
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(uint8_t *)stored_time_based_policy, time_based_policy_length);
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if (sgx_ret)
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{
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cerr<<"call create_time_based_policy fail, error code = 0x"<< hex<<
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sgx_ret <<endl;
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return sgx_ret;
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}
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if (enclave_ret)
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{
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cerr<<"cannot create_time_based_policy, function return fail, error code = 0x"
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<< hex<< enclave_ret <<endl;
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return enclave_ret;
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}
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return 0;
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}
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uint32_t TimeBasedDRM:: init()
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{
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return init(time_based_policy);
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}
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uint32_t TimeBasedDRM::perform_function(uint8_t* stored_time_based_policy)
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{
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sgx_status_t sgx_ret = SGX_ERROR_UNEXPECTED;
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uint32_t enclave_ret = 0;
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sgx_ret = perform_time_based_policy(enclave_id, &enclave_ret,
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stored_time_based_policy, time_based_policy_length);
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if (sgx_ret)
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{
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cerr<<"call perform_time_based_policy fail, error code = 0x"<< hex<<
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sgx_ret <<endl;
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return sgx_ret;
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}
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if (enclave_ret)
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{
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cerr<<"cannot perform_time_based_policy, function return fail, error code = 0x"
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<< hex<< enclave_ret <<endl;
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return enclave_ret;
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}
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return 0;
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}
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uint32_t TimeBasedDRM::perform_function()
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{
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return perform_function(time_based_policy);
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}
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