/* * Copyright (C) 2011-2018 Intel Corporation. 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 Intel Corporation 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 "sgx_eid.h" #include "error_codes.h" #include "datatypes.h" #include "sgx_urts.h" #include "UntrustedEnclaveMessageExchange.h" #include "sgx_dh.h" #include #include #include #include #include #include std::mapg_enclave_id_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* session_id) { uint32_t status = 0; sgx_status_t ret = SGX_SUCCESS; // wait for Enclave2 to fill msg1 printf("[OCALL IPC] Waiting for Enclave2 to generate SessionID and message1...\n"); sleep(5); printf("[OCALL IPC] SessionID and message1 should be ready\n"); // for session id printf("[OCALL IPC] Retriving SessionID from shared memory\n"); key_t key_session_id = ftok("../..", 3); int shmid_session_id = shmget(key_session_id, sizeof(uint32_t), 0666|IPC_CREAT); uint32_t* tmp_session_id = (uint32_t*)shmat(shmid_session_id, (void*)0, 0); memcpy(session_id, tmp_session_id, sizeof(uint32_t)); shmdt(tmp_session_id); // for msg1 printf("[OCALL IPC] Retriving message1 from shared memory\n"); key_t key_msg1 = ftok("../..", 2); int shmid_msg1 = shmget(key_msg1, sizeof(sgx_dh_msg1_t), 0666|IPC_CREAT); sgx_dh_msg1_t *tmp_msg1 = (sgx_dh_msg1_t*)shmat(shmid_msg1, (void*)0, 0); memcpy(dh_msg1, tmp_msg1, sizeof(sgx_dh_msg1_t)); shmdt(tmp_msg1); ret = SGX_SUCCESS; if (ret == SGX_SUCCESS) return SUCCESS; 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 session_id) { uint32_t status = 0; sgx_status_t ret = SGX_SUCCESS; // for msg2 (filled by Enclave1) printf("[OCALL IPC] Passing message2 to shared memory for Enclave2\n"); key_t key_msg2 = ftok("../..", 4); int shmid_msg2 = shmget(key_msg2, sizeof(sgx_dh_msg2_t), 0666|IPC_CREAT); sgx_dh_msg2_t *tmp_msg2 = (sgx_dh_msg2_t*)shmat(shmid_msg2, (void*)0, 0); memcpy(tmp_msg2, dh_msg2, sizeof(sgx_dh_msg2_t)); shmdt(tmp_msg2); // wait for Enclave2 to process msg2 printf("[OCALL IPC] Waiting for Enclave2 to process message2 and generate message3...\n"); sleep(5); // retrieve msg3 (filled by Enclave2) printf("[OCALL IPC] Message3 should be ready\n"); printf("[OCALL IPC] Retrieving message3 from shared memory\n"); key_t key_msg3 = ftok("../..", 5); int shmid_msg3 = shmget(key_msg3, sizeof(sgx_dh_msg3_t), 0666|IPC_CREAT); sgx_dh_msg3_t *tmp_msg3 = (sgx_dh_msg3_t*)shmat(shmid_msg3, (void*)0, 0); memcpy(dh_msg3, tmp_msg3, sizeof(sgx_dh_msg3_t)); shmdt(tmp_msg3); ret = SGX_SUCCESS; if (ret == SGX_SUCCESS) return SUCCESS; else return INVALID_SESSION; } //Make an sgx_ecall to the destination enclave function that generates the actual response ATTESTATION_STATUS send_request_ocall(sgx_enclave_id_t src_enclave_id, sgx_enclave_id_t dest_enclave_id,secure_message_t* req_message, size_t req_message_size, size_t max_payload_size, secure_message_t* resp_message, size_t resp_message_size) { uint32_t status = 0; sgx_status_t ret = SGX_SUCCESS; uint32_t temp_enclave_no; std::map::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_generate_response(dest_enclave_id, &status, src_enclave_id, req_message, req_message_size, max_payload_size, resp_message, resp_message_size); break; case 2: ret = Enclave2_generate_response(dest_enclave_id, &status, src_enclave_id, req_message, req_message_size, max_payload_size, resp_message, resp_message_size); break; case 3: ret = Enclave3_generate_response(dest_enclave_id, &status, src_enclave_id, req_message, req_message_size, max_payload_size, resp_message, resp_message_size); 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; std::map::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_end_session(dest_enclave_id, &status, src_enclave_id); break; case 2: ret = Enclave2_end_session(dest_enclave_id, &status, src_enclave_id); break; case 3: ret = Enclave3_end_session(dest_enclave_id, &status, src_enclave_id); break; } if (ret == SGX_SUCCESS) return (ATTESTATION_STATUS)status; else return INVALID_SESSION; } void ocall_print_string(const char *str) { printf("%s", str); }