| /* |
| * Copyright (C) 2011-2016 2017 Baidu, Inc. All Rights Reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Baidu, Inc., nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <stdio.h> |
| #include "sgx_eid.h" |
| #include "error_codes.h" |
| #include "sgx_urts.h" |
| #include "UntrustedEnclaveMessageExchange.h" |
| #include "sgx_dh.h" |
| #include <map> |
| |
| std::map<sgx_enclave_id_t, uint32_t>g_enclave_id_map; |
| std::map<sgx_enclave_id_t, std::map<sgx_enclave_id_t, size_t> >g_session_ptr_map; |
| |
| //Makes an sgx_ecall to the destination enclave to get session id and message1 |
| ATTESTATION_STATUS session_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, sgx_dh_msg1_t* dh_msg1) |
| { |
| uint32_t status = 0; |
| sgx_status_t ret = SGX_SUCCESS; |
| uint32_t temp_enclave_no; |
| size_t session_ptr = 0; |
| |
| std::map<sgx_enclave_id_t, uint32_t>::iterator it = g_enclave_id_map.find(dest_enclave_id); |
| if(it != g_enclave_id_map.end()) |
| { |
| temp_enclave_no = it->second; |
| } |
| else |
| { |
| return INVALID_SESSION; |
| } |
| |
| switch(temp_enclave_no) |
| { |
| case 1: |
| ret = Enclave1_session_request(dest_enclave_id, &status, src_enclave_id, dh_msg1, &session_ptr); |
| break; |
| case 2: |
| ret = Enclave2_session_request(dest_enclave_id, &status, src_enclave_id, dh_msg1, &session_ptr); |
| break; |
| case 3: |
| ret = Enclave3_session_request(dest_enclave_id, &status, src_enclave_id, dh_msg1, &session_ptr); |
| break; |
| } |
| if (ret == SGX_SUCCESS) |
| { |
| std::map<sgx_enclave_id_t, std::map<sgx_enclave_id_t, size_t> >::iterator it_ptr = g_session_ptr_map.find(dest_enclave_id); |
| if(it_ptr != g_session_ptr_map.end()) |
| { |
| it_ptr->second.insert(std::pair<sgx_enclave_id_t, size_t>(src_enclave_id, session_ptr)); |
| } |
| else |
| { |
| std::map<sgx_enclave_id_t, size_t> sub_map; |
| sub_map.insert(std::pair<sgx_enclave_id_t, size_t>(src_enclave_id, session_ptr)); |
| g_session_ptr_map.insert(std::pair<sgx_enclave_id_t, std::map<sgx_enclave_id_t, size_t> >(dest_enclave_id, sub_map)); |
| } |
| |
| return (ATTESTATION_STATUS)status; |
| } |
| else |
| return INVALID_SESSION; |
| |
| } |
| //Makes an sgx_ecall to the destination enclave sends message2 from the source enclave and gets message 3 from the destination enclave |
| ATTESTATION_STATUS exchange_report_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id, sgx_dh_msg2_t *dh_msg2, sgx_dh_msg3_t *dh_msg3) |
| { |
| uint32_t status = 0; |
| sgx_status_t ret = SGX_SUCCESS; |
| uint32_t temp_enclave_no; |
| size_t session_ptr = 0; |
| |
| std::map<sgx_enclave_id_t, uint32_t>::iterator it = g_enclave_id_map.find(dest_enclave_id); |
| if(it != g_enclave_id_map.end()) |
| { |
| temp_enclave_no = it->second; |
| } |
| else |
| { |
| return INVALID_SESSION; |
| } |
| |
| std::map<sgx_enclave_id_t, std::map<sgx_enclave_id_t, size_t> >::iterator it_ptr = g_session_ptr_map.find(dest_enclave_id); |
| if(it_ptr != g_session_ptr_map.end()) |
| { |
| std::map<sgx_enclave_id_t, size_t>::iterator it_ptr_sub = it_ptr->second.find(src_enclave_id); |
| if(it_ptr_sub != it_ptr->second.end()) |
| { |
| session_ptr = it_ptr_sub->second; |
| } |
| } |
| else |
| { |
| return INVALID_SESSION; |
| } |
| |
| switch(temp_enclave_no) |
| { |
| case 1: |
| ret = Enclave1_exchange_report(dest_enclave_id, &status, src_enclave_id, dh_msg2, dh_msg3, (size_t*)session_ptr); |
| break; |
| case 2: |
| ret = Enclave2_exchange_report(dest_enclave_id, &status, src_enclave_id, dh_msg2, dh_msg3, (size_t*)session_ptr); |
| break; |
| case 3: |
| ret = Enclave3_exchange_report(dest_enclave_id, &status, src_enclave_id, dh_msg2, dh_msg3, (size_t*)session_ptr); |
| break; |
| } |
| if (ret == SGX_SUCCESS) |
| return (ATTESTATION_STATUS)status; |
| else |
| return INVALID_SESSION; |
| |
| } |
| |
| //Make an sgx_ecall to the destination enclave to close the session |
| ATTESTATION_STATUS end_session_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id) |
| { |
| uint32_t status = 0; |
| sgx_status_t ret = SGX_SUCCESS; |
| uint32_t temp_enclave_no; |
| size_t session_ptr = 0; |
| |
| std::map<sgx_enclave_id_t, uint32_t>::iterator it = g_enclave_id_map.find(dest_enclave_id); |
| if(it != g_enclave_id_map.end()) |
| { |
| temp_enclave_no = it->second; |
| } |
| else |
| { |
| return INVALID_SESSION; |
| } |
| |
| std::map<sgx_enclave_id_t, std::map<sgx_enclave_id_t, size_t> >::iterator it_ptr = g_session_ptr_map.find(dest_enclave_id); |
| if(it_ptr != g_session_ptr_map.end()) |
| { |
| std::map<sgx_enclave_id_t, size_t>::iterator it_ptr_sub = it_ptr->second.find(src_enclave_id); |
| if(it_ptr_sub != it_ptr->second.end()) |
| { |
| session_ptr = it_ptr_sub->second; |
| } |
| } |
| else |
| { |
| return INVALID_SESSION; |
| } |
| |
| switch(temp_enclave_no) |
| { |
| case 1: |
| ret = Enclave1_end_session(dest_enclave_id, &status, src_enclave_id, (size_t*)session_ptr); |
| break; |
| case 2: |
| ret = Enclave2_end_session(dest_enclave_id, &status, src_enclave_id, (size_t*)session_ptr); |
| break; |
| case 3: |
| ret = Enclave3_end_session(dest_enclave_id, &status, src_enclave_id, (size_t*)session_ptr); |
| break; |
| } |
| if (ret == SGX_SUCCESS) |
| return (ATTESTATION_STATUS)status; |
| else |
| return INVALID_SESSION; |
| |
| } |