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TorSGX.cpp
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TorSGX.cpp
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#include "Enclave_t.h"
#include "Enclave.h"
#include "sgx_trts.h"
#include "sgx_tseal.h"
#include "orconfig.h"
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctime>
#include <string.h>
#include <string>
#include <ctype.h>
#include <map>
#include "tor_main.h"
#include "tor-gencert.h"
#include "sgx_tkey_exchange.h"
#include "sgx_tcrypto.h"
#include "string.h"
#include "service_provider.h"
#include "network_ra.h"
#include "sgx_thread.h"
#include <list>
#include <openssl/evp.h>
#include <openssl/ssl.h>
#include <openssl/bio.h>
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning ( disable:4127 )
#endif
using namespace std;
//OSVERSIONINFOA version_info;
int *out_errno = NULL;
char ***out_environ = NULL;
char *conf_root = NULL;
char *torrc = NULL;
char *out_system_dir = NULL;
//MEMORYSTATUSEX *out_mse = NULL;
//SYSTEM_INFO *out_info = NULL;
map<string, int> sgx_fileNMap;
map<int, sgx_file*> sgx_fileFMap;
int max_fd = 3;
// For eval
//#define EVAL_OCALL_COUNT
//#define EVAL_REMOTE_ATTEST_COUNT
//#define EVAL_REMOTE_ATTEST_TIME
#ifdef EVAL_REMOTE_ATTEST_COUNT
//bool is_remote_attest_start; // need modification!
int send_cnt;
int recv_cnt;
int send_byte;
int recv_byte;
#endif
#ifdef EVAL_REMOTE_ATTEST_TIME
long start_time, end_time;
double diff;
bool is_remote_attest_start;
#endif
#ifdef EVAL_OCALL_COUNT
int ocall_num;
#endif
/*
void StartTorSGX(int argc, char **argv, int argv_len, void *version, int version_size,
unsigned long long app_errno, unsigned long long app_environ,
const char *app_conf_root, const char *app_torrc, const char *app_system_dir, MEMORYSTATUSEX *app_mse, SYSTEM_INFO *app_info)
*/
void StartTorSGX(int argc, char **argv, int argv_len,
unsigned long long app_errno, unsigned long long app_environ, const char *app_torrc)
{
// memcpy(&version_info, (OSVERSIONINFOA *)version, sizeof(OSVERSIONINFOAa));
out_errno = (int *)app_errno;
out_environ = (char ***)app_environ;
/*
if (app_conf_root != NULL) {
conf_root = (char *)calloc(1, strlen(app_conf_root)+1);
memcpy(conf_root, app_conf_root, strlen(app_conf_root)+1);
}
*/
if (app_torrc != NULL) {
printf("length = %d\n", strlen(app_torrc));
torrc = (char *)calloc(1, strlen(app_torrc)+1);
memcpy(torrc, app_torrc, strlen(app_torrc)+1);
}
/*
if (app_system_dir != NULL) {
out_system_dir = (char *)calloc(1, strlen(app_system_dir)+1);
memcpy(out_system_dir, app_system_dir, strlen(app_system_dir)+1);
}
if(app_mse != NULL) {
out_mse = (MEMORYSTATUSEX *)calloc(1, sizeof(MEMORYSTATUSEX));
memcpy(out_mse, app_mse, sizeof(MEMORYSTATUSEX));
}
if(app_info != NULL) {
out_info = (SYSTEM_INFO *)calloc(1, sizeof(SYSTEM_INFO));
memcpy(out_info, app_info, sizeof(SYSTEM_INFO));
}
*/
printf("out_environ = %p\n", out_environ);
// printf("conf_root = %s\n", conf_root);
// printf("out_system_dir = %s\n", out_system_dir);
main(argc, argv);
}
void sgx_start_gencert(char * tor_cert, unsigned long long app_errno, const char *month, const char *address)
{
char *retv;
out_errno = (int *)app_errno;
retv = start_gencert(month, address);
memcpy(tor_cert, retv, strlen(retv)+1);
free(retv);
}
/*
void sgx_start_fingerprint(char *fingerprint, char *data_dir, const char *app_torrc, unsigned long long app_errno,
MEMORYSTATUSEX *app_mse)
*/
void sgx_start_fingerprint(char *fingerprint, char *data_dir, const char *app_torrc, unsigned long long app_errno)
// MEMORYSTATUSEX *app_mse)
{
char *retv;
out_errno = (int *)app_errno;
/*
if(app_mse != NULL) {
out_mse = (MEMORYSTATUSEX *)calloc(1, sizeof(MEMORYSTATUSEX));
memcpy(out_mse, app_mse, sizeof(MEMORYSTATUSEX));
}
*/
torrc = (char *)calloc(1, strlen(app_torrc)+1);
memcpy(torrc, app_torrc, strlen(app_torrc)+1);
retv = start_do_list_fingerprint(data_dir);
memcpy(fingerprint, retv, strlen(retv)+1);
free(torrc);
free(retv);
// free(out_mse);
}
void sgx_seal_files(char *fname, void *fcont)
{
int fd;
sgx_file *f;
sgx_status_t retv;
uint32_t sealed_data_size;
char *content;
uint32_t content_len = 8192;
fd = sgx_fileNMap[fname];
f = sgx_fileFMap[fd];
content = (char *)calloc(1, f->content_len);
memcpy(content, f->content, f->content_len);
//printf("Seal %s: %s\n", fname, content);
sealed_data_size = sgx_calc_sealed_data_size(0, f->content_len);
if((retv = sgx_seal_data(0, NULL, f->content_len, (const uint8_t *)content, sealed_data_size, (sgx_sealed_data_t *)fcont)) != SGX_SUCCESS) {
printf("Error sgx_seal_data! retv = %d\n", retv);
}
}
void sgx_unseal_files(char *fname, void *fcont)
{
uint32_t content_len;
sgx_file *new_file;
char *content;
content_len = 8192;
content = (char *)calloc(1, content_len);
sgx_unseal_data((const sgx_sealed_data_t *)fcont, NULL, 0, (uint8_t *)content, &content_len);
sgx_fileNMap[fname] = max_fd;
new_file = (sgx_file *)calloc(1, sizeof(sgx_file));
new_file->content = (char *)realloc(content, content_len);
new_file->content_len = content_len;
new_file->seek = 0;
new_file->mtime = time(NULL);
sgx_fileFMap[max_fd] = new_file;
max_fd += 1;
//printf("Unseal %s: %s\n", fname, new_file->content);
}
// Just for debug SGX-Tor, to run faster
void test_sgx_put_gencert(char *fname, char *fcont, int fcont_len)
{
sgx_file *new_file;
char *content;
content = (char *)calloc(1, fcont_len);
memcpy(content, fcont, fcont_len);
sgx_fileNMap[fname] = max_fd;
new_file = (sgx_file *)calloc(1, sizeof(sgx_file));
new_file->content = content;
new_file->content_len = fcont_len;
new_file->seek = 0;
new_file->mtime = time(NULL);
sgx_fileFMap[max_fd] = new_file;
max_fd += 1;
//printf("load %s len = %d\n%s\n", fname, fcont_len, content);
}
/* Remote attestation Start */
list<unsigned long *> remote_accept_list;
sgx_thread_mutex_t remote_mutex;
static sgx_thread_mutexattr_t attr_recursive;
SSL_CTX *g_ctx = NULL;
char dest_url[] = "https://test-as.sgx.trustedservices.intel.com";
int SEND(int s, void *msg, int size)
{
int n, e;
n = send(s, (const char *)msg, size, 0);
/*
if (n < 0) {
e = WSAGetLastError();
printf("Error, recv: %d\n", e);
if (e == WSAEWOULDBLOCK || e == WSAENOTCONN) {
// sgx_Sleep(1000);
return SEND(s, msg, size);
}
else {
abort();
}
}
*/
return n;
}
int RECV(int s, void *msg, int size)
{
int n, e;
n = recv(s, (char *)msg, size, 0);
/*
if (n < 0) {
e = WSAGetLastError();
printf("Error, recv: %d\n", e);
if (e == WSAEWOULDBLOCK || e == WSAENOTCONN) {
// sgx_Sleep(1000);
return RECV(s, msg, size);
}
else {
abort();
}
}
*/
return n;
}
int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key, STACK_OF(X509) *chain, int build_chain)
{
int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
if (cert == NULL)
return 1;
if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
printf("error setting certificate\n");
return 0;
}
if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) {
printf("error setting private key\n");
return 0;
}
if (!SSL_CTX_check_private_key(ctx)) {
printf("Private key does not match the certificate public key\n");
return 0;
}
if (chain && !SSL_CTX_set1_chain(ctx, chain)) {
printf("error setting certificate chain\n");
return 0;
}
if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags)) {
printf("error building certificate chain\n");
return 0;
}
return 1;
}
void get_ssl_context(void *sgx_cert_cont, int sgx_cert_size, void *sgx_pkey_cont, int sgx_pkey_size)
{
const SSL_METHOD *method;
OpenSSL_add_all_algorithms();
if (SSL_library_init() < 0)
printf("Could not initialize the OpenSSL library !\n");
method = SSLv23_client_method();
if ((g_ctx = SSL_CTX_new(method)) == NULL)
printf("Unable to create a new SSL context structure.\n");
BIO *tmp_cert = BIO_new_mem_buf((void *)sgx_cert_cont, sgx_cert_size);
X509 *sgx_cert = PEM_read_bio_X509_AUX(tmp_cert, NULL, (pem_password_cb *)NULL, NULL);
BIO_free(tmp_cert);
if (sgx_cert == NULL) {
printf("x is NULL\n");
abort();
}
BIO *tmp_pkey = BIO_new_mem_buf((void *)sgx_pkey_cont, sgx_pkey_size);
EVP_PKEY *sgx_pkey = PEM_read_bio_PrivateKey(tmp_pkey, NULL, (pem_password_cb *)NULL, NULL);
BIO_free(tmp_pkey);
if (sgx_pkey == NULL) {
printf("unable to load key\n");
abort();
}
if (!set_cert_key_stuff(g_ctx, sgx_cert, sgx_pkey, NULL, 0)) {
printf("set_cert_key_stuff error\n");
abort();
}
SSL_CTX_set_options(g_ctx, SSL_OP_NO_SSLv2);
}
//SOCKET create_socket(char url_str[]) {
int create_socket(char url_str[]) {
int sockfd;
// SOCKET sockfd;
char hostname[256] = "";
char portnum[6] = "443";
char proto[6] = "";
char *tmp_ptr = NULL;
int port;
struct hostent *host;
struct sockaddr_in dest_addr;
if (url_str[strlen(url_str)] == '/')
url_str[strlen(url_str)] = '\0';
strncpy(proto, url_str, (strchr(url_str, ':') - url_str));
strncpy(hostname, strstr(url_str, "://") + 3, sizeof(hostname));
if (strchr(hostname, ':')) {
tmp_ptr = strchr(hostname, ':');
strncpy(portnum, tmp_ptr + 1, sizeof(portnum));
*tmp_ptr = '\0';
}
port = atoi(portnum);
if ((host = sgx_gethostbyname(hostname)) == NULL) {
printf("Error: Cannot resolve hostname %s.\n", hostname);
abort();
}
sockfd = sgx_socket(AF_INET, SOCK_STREAM, 0);
dest_addr.sin_family = AF_INET;
dest_addr.sin_port = htons(port);
dest_addr.sin_addr.s_addr = *(long*)(host->h_addr);
memset(&(dest_addr.sin_zero), '\0', 8);
if (sgx_connect(sockfd, (struct sockaddr *) &dest_addr, sizeof(struct sockaddr)) == -1) {
printf("Error: Cannot connect to host %s on port %d.\n", hostname, port);
}
return sockfd;
}
SSL * s_connect(int sock, char * dest_url)
{
SSL *ssl;
int server = 0;
if (g_ctx == NULL) {
puts("SSL_CTX is NULL!");
abort();
}
ssl = SSL_new(g_ctx);
SSL_set_fd(ssl, sock);
if (SSL_connect(ssl) != 1) {
printf("Error: Could not build a SSL session to: %s.\n", dest_url);
}
else {
//printf("Successfully enabled SSL/TLS session to: %s.\n", dest_url);
}
//printf("Finished SSL/TLS connection with server: %s.\n", dest_url);
return ssl;
}
int get_sigrl(ra_samp_request_header_t * p_msg1_full)
{
SSL * ssl;
int k;
int ret = 1;
// SOCKET sock;
int sock;
char send_buf[8192], recv_buf[8192];
sock = create_socket(dest_url);
ssl = s_connect(sock, dest_url);
memset(send_buf, 0, sizeof(send_buf));
memset(recv_buf, 0, sizeof(recv_buf));
snprintf(send_buf, sizeof(send_buf), "GET /attestation/sgx/v1/sigrl/%02X%02X%02X%02X\r\n\r\n", p_msg1_full->body[67], p_msg1_full->body[66], p_msg1_full->body[65], p_msg1_full->body[64]);
k = SSL_write(ssl, send_buf, strlen(send_buf));
if (k < 0) {
printf("Error!\n");
abort();
}
k = SSL_read(ssl, recv_buf, 8192);
if (k < 0) {
printf("Error!\n");
abort();
}
//printf("Received buffer = %s\n", recv_buf);
if (strstr(recv_buf, "200 OK") != NULL) {
//printf("Get SigRL Success!\n");
ret = 0;
}
else{
printf("Invalid EPID\n");
ret = -1;
}
SSL_free(ssl);
real_sgx_close(sock);
// sgx_closesocket(sock);
return ret;
}
int sgx_process_msg_all(const ra_samp_request_header_t *p_req, int p_req_size, ra_samp_response_header_t **p_resp, uint32_t p_resp_size) {
int ret = -1;
sgx_status_t sgx_retv;
ra_samp_response_header_t *tmp_resp;
if ((sgx_retv = ocall_sgx_process_msg_all(&ret, (void *)p_req, p_req_size, (void **)&tmp_resp)) != SGX_SUCCESS) {
printf("OCALL FAILED!, Error code = %d\n", sgx_retv);
abort();
return -1;
}
if (p_resp_size != 0) {
*p_resp = (ra_samp_response_header_t *)calloc(1, p_resp_size);
memcpy(*p_resp, tmp_resp, p_resp_size);
}
if ((sgx_retv = ocall_sgx_ra_free_network_response_buffer((void **)&tmp_resp)) != SGX_SUCCESS) {
printf("OCALL FAILED!, Error code = %d\n", sgx_retv);
abort();
return -1;
}
return ret;
}
void build_msg2(ra_samp_request_header_t *p_msg1_full, uint32_t msg1_full_size, ra_samp_response_header_t **p_msg2_full_return, uint32_t msg2_size)
{
int ret = 0;
if (NULL == p_msg1_full) {
abort();
}
ret = sgx_process_msg_all(p_msg1_full, msg1_full_size, p_msg2_full_return, msg2_size);
if (ret != 0) {
puts("Error, process_msg_all for msg0 failed.");
abort();
}
if (TYPE_RA_MSG2 != (*p_msg2_full_return)->type) {
puts("Error, didn't get MSG2 in response to MSG1.");
abort();
}
}
void base64_encode(const byte* in, size_t in_len,
char** out, size_t* out_len) {
BIO *buff, *b64f;
BUF_MEM *ptr;
b64f = BIO_new(BIO_f_base64());
buff = BIO_new(BIO_s_mem());
buff = BIO_push(b64f, buff);
BIO_set_flags(buff, BIO_FLAGS_BASE64_NO_NL);
BIO_set_close(buff, BIO_CLOSE);
BIO_write(buff, in, in_len);
BIO_flush(buff);
BIO_get_mem_ptr(buff, &ptr);
(*out_len) = ptr->length;
(*out) = (char *)malloc(((*out_len) + 1) * sizeof(char));
memcpy(*out, ptr->data, (*out_len));
(*out)[(*out_len)] = '\0';
BIO_free_all(buff);
}
int post_quote(ra_samp_request_header_t * p_msg3_full)
{
SSL * ssl;
// SOCKET sock;
int sock;
int k = -1, ret = -1;
sock = create_socket(dest_url);
ssl = s_connect(sock, dest_url);
sample_ra_msg3_t *p_msg3 = (sample_ra_msg3_t*)((uint8_t*)p_msg3_full + sizeof(ra_samp_request_header_t));
sample_quote_t *p_quote = (sample_quote_t *)p_msg3->quote;
size_t quote_size = sizeof(sample_quote_t)+p_quote->signature_len;
char *base64str;
size_t base64strlen;
char send_buf[8192], recv_buf[8192];
char isvEnclaveQuote[4096];
memset(send_buf, 0, sizeof(send_buf));
memset(recv_buf, 0, sizeof(recv_buf));
memset(isvEnclaveQuote, 0, sizeof(isvEnclaveQuote));
base64_encode((const byte *)p_quote, quote_size, &base64str, &base64strlen);
memset(send_buf, 0, sizeof(send_buf));
snprintf(isvEnclaveQuote, sizeof(isvEnclaveQuote), "{\"isvEnclaveQuote\":\"%s\"}", base64str);
free(base64str);
snprintf(send_buf, sizeof(send_buf),
"POST /attestation/sgx/v1/report\r\n"
"Content-Type:application/json\r\n"
"Content-Length:%d\r\n\r\n"
"%s"
"\r\n\r\n",
(int)strlen(isvEnclaveQuote), isvEnclaveQuote);
//printf("send_buf = %s\n", send_buf);
k = SSL_write(ssl, send_buf, strlen(send_buf));
if (k < 0) {
printf("Error! SSL_write\n");
abort();
}
memset(recv_buf, 0, sizeof(recv_buf));
k = SSL_read(ssl, recv_buf, 8192);
if (k < 0) {
printf("Error! SSL_read\n");
abort();
}
//printf("QUOTE response = %s\n", recv_buf);
if (strstr(recv_buf, "201 Created") != NULL) {
//printf("Remote attestation success!\n");
ret = 0;
}
else{
printf("Invalid EPID\n");
ret = -1;
}
SSL_free(ssl);
real_sgx_close(sock);
// sgx_closesocket(sock);
return ret;
}
void build_msg4(ra_samp_request_header_t *p_msg3_full, uint32_t msg3_full_size, ra_samp_response_header_t **p_att_result_msg_full_return, uint32_t att_result_msg_size)
{
int ret;
sample_ra_msg3_t *p_msg3 = (sample_ra_msg3_t*)((uint8_t*)p_msg3_full + sizeof(ra_samp_request_header_t));
sample_quote_t *p_quote = (sample_quote_t *)p_msg3->quote;
sgx_status_t sgx_retv;
ret = sgx_process_msg_all(p_msg3_full, msg3_full_size, p_att_result_msg_full_return, att_result_msg_size);
if(ret != 0) {
printf("OCALL FAILED!, Error code = %d\n", sgx_retv);
abort();
}
//printf("build msg4 complete \n");
}
int remote_attest_server_port = -1;
void sgx_start_remote_attestation_server(int remote_server_port, void *sgx_cert_cont, int sgx_cert_size,
void *sgx_pkey_cont, int sgx_pkey_size, unsigned long given_my_ip)
{
// SOCKET server_fd, client_fd;
int server_fd, client_fd;
struct sockaddr_in server_addr, client_addr;
int client_addr_size;
int n, ret, is_ok = 0;
ra_samp_request_header_t *p_msg0_full = NULL;
ra_samp_response_header_t *p_msg0_resp_full = NULL;
ra_samp_request_header_t *p_msg1_full = NULL;
ra_samp_response_header_t *p_msg2_full = NULL;
ra_samp_response_header_t *p_att_result_msg_full = NULL;
ra_samp_request_header_t *p_msg3_full = NULL;
unsigned long *accept_ip;
int r;
sgx_status_t sgx_retv;
sgx_thread_mutex_init(&remote_mutex, &attr_recursive);
unsigned long *my_ip, *loop_back_ip;
my_ip = (unsigned long *)calloc(1, sizeof(unsigned long));
memcpy(my_ip, &given_my_ip, sizeof(unsigned long));
loop_back_ip = (unsigned long *)calloc(1, sizeof(unsigned long));
given_my_ip = 16777343; // 127.0.0.1
memcpy(loop_back_ip, &given_my_ip, sizeof(unsigned long)); // 127.0.0.1
sgx_thread_mutex_lock(&remote_mutex);
remote_accept_list.push_back(my_ip);
remote_accept_list.push_back(loop_back_ip);
sgx_thread_mutex_unlock(&remote_mutex);
server_fd = sgx_socket(AF_INET, SOCK_STREAM, 0);
// if (server_fd == INVALID_SOCKET){
if (server_fd == -1){
puts("*** Error, invalid socket");
abort();
}
remote_attest_server_port = remote_server_port;
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
server_addr.sin_port = htons(remote_attest_server_port);
// if (sgx_bind(server_fd, (sockaddr *)&server_addr, sizeof (server_addr)) == SOCKET_ERROR){
if (sgx_bind(server_fd, (sockaddr *)&server_addr, sizeof (server_addr)) == -1){
puts("*** Error, connect");
// sgx_closesocket(server_fd);
real_sgx_close(server_fd);
abort();
}
// if (sgx_listen(server_fd, SOMAXCONN) == SOCKET_ERROR) {
if (sgx_listen(server_fd, SOMAXCONN) == -1) {
// printf("listen function failed with error: %d\n", WSAGetLastError());
// sgx_closesocket(server_fd);
real_sgx_close(server_fd);
abort();
}
printf("Listening to client connection... \n");
while (1) {
client_addr_size = sizeof(struct sockaddr_in);
memset(&client_addr, 0, sizeof(client_addr));
client_fd = sgx_accept(server_fd, (sockaddr *)&client_addr, &client_addr_size);
printf("Server Remote Attestation Start!\n");
printf("Client %d is accepted!\n", ntohs(client_addr.sin_port));
#ifdef EVAL_REMOTE_ATTEST_COUNT
is_remote_attest_start = true;
send_cnt = 0;
recv_cnt = 0;
send_byte = 0;
recv_byte = 0;
#endif
#ifdef EVAL_REMOTE_ATTEST_TIME
is_remote_attest_start = true;
diff = 0;
start_time = sgx_clock();
#endif
uint32_t msg0_full_size = sizeof(ra_samp_request_header_t)+sizeof(uint32_t);
p_msg0_full = (ra_samp_request_header_t*)calloc(1, msg0_full_size);
RECV(client_fd, p_msg0_full, msg0_full_size);
ret = sgx_process_msg_all(p_msg0_full, msg0_full_size, &p_msg0_resp_full, 0);
if (ret != 0)
{
printf("OCALL FAILED!, Error code = %d\n", sgx_retv);
abort();
}
if (ret != 0) {
puts("Error, process_msg_all for msg0 failed.");
is_ok = -1;
SEND(client_fd, &is_ok, sizeof(int));
goto err;
}
else {
//printf("\nMSG0 Verified!\n");
is_ok = 1234;
SEND(client_fd, &is_ok, sizeof(int));
}
{
uint32_t msg1_full_size = sizeof(ra_samp_request_header_t)+sizeof(sgx_ra_msg1_t);
uint32_t msg2_size = 168;
uint32_t msg2_full_size;
p_msg1_full = (ra_samp_request_header_t*)calloc(1, msg1_full_size);
RECV(client_fd, p_msg1_full, msg1_full_size);
get_ssl_context(sgx_cert_cont, sgx_cert_size, sgx_pkey_cont, sgx_pkey_size);
ret = get_sigrl(p_msg1_full);
if (ret != 0) {
puts("Error, process_msg_all for msg1 failed.");
is_ok = -1;
SEND(client_fd, &is_ok, sizeof(int));
goto err;
}
else {
//printf("\nMSG1 Verified!\n");
is_ok = 1234;
SEND(client_fd, &is_ok, sizeof(int));
}
msg2_full_size = sizeof(ra_samp_response_header_t)+msg2_size;
build_msg2(p_msg1_full, msg1_full_size, &p_msg2_full, msg2_full_size);
SEND(client_fd, &msg2_full_size, sizeof(uint32_t));
SEND(client_fd, p_msg2_full, msg2_full_size);
}
{
uint32_t msg3_size = 0;
uint32_t msg3_full_size;
uint32_t att_result_msg_size;
uint32_t msg4_size;
RECV(client_fd, &msg3_size, sizeof(uint32_t));
msg3_full_size = sizeof(ra_samp_request_header_t)+msg3_size;
p_msg3_full = (ra_samp_request_header_t*)calloc(1, msg3_full_size);
RECV(client_fd, p_msg3_full, sizeof(ra_samp_request_header_t)+msg3_size);
ret = post_quote(p_msg3_full);
if (ret != 0){
printf("invalid quote \n");
is_ok = -1;
SEND(client_fd, &is_ok, sizeof(int));
goto err;
}
else {
//printf("MSG4 Verified!\n");
is_ok = 1234;
SEND(client_fd, &is_ok, sizeof(int));
}
att_result_msg_size = sizeof(sample_ra_att_result_msg_t);
msg4_size = att_result_msg_size + sizeof(ra_samp_response_header_t)+8;
build_msg4(p_msg3_full, msg3_full_size, &p_att_result_msg_full, att_result_msg_size);
SEND(client_fd, p_att_result_msg_full, msg4_size);
// Append to accept list if success
accept_ip = (unsigned long *)calloc(1, sizeof(unsigned long));
memcpy(accept_ip, &client_addr.sin_addr.s_addr, sizeof(unsigned long));
sgx_thread_mutex_lock(&remote_mutex);
remote_accept_list.push_back(accept_ip);
sgx_thread_mutex_unlock(&remote_mutex);
}
err:
if(p_msg0_full != NULL) sgx_free(p_msg0_full);
if(p_msg0_resp_full != NULL) sgx_free(p_msg0_resp_full);
if(p_msg1_full != NULL) sgx_free(p_msg1_full);
if(p_msg2_full != NULL) sgx_free(p_msg2_full);
if(p_msg3_full != NULL) sgx_free(p_msg3_full);
if(p_att_result_msg_full != NULL) sgx_free(p_att_result_msg_full);
if (g_ctx != NULL) {
SSL_CTX_free(g_ctx);
g_ctx = NULL;
}
real_sgx_close(client_fd);
// sgx_closesocket(client_fd);
#ifdef EVAL_REMOTE_ATTEST_TIME
is_remote_attest_start = false;
if (is_remote_attest_start) {
end_time = sgx_clock();
diff += (end_time - start_time) / (double)1000;
}
printf("Time for remote attestation : %lf\n", diff);
#endif
#ifdef EVAL_REMOTE_ATTEST_COUNT
is_remote_attest_start = false;
printf("Count: send = %d, recv = %d\nBytes: send = %d bytes, recv = %d bytes\n", send_cnt, recv_cnt, send_byte, recv_byte);
#endif
}
sgx_thread_mutex_destroy(&remote_mutex);
real_sgx_close(server_fd);
// sgx_closesocket(server_fd);
}
/*
unsigned sgx_GetSystemDirectory(char *lpBuffer, unsigned int uSize)
{
unsigned retv = strlen(out_system_dir);
memcpy(lpBuffer, out_system_dir, retv+1);
return retv;
}
int sgx_SHGetSpecialFolderPathA(HWND hwnd, char *path, int csidl, int fCreate)
{
memcpy(path, out_system_dir, strlen(out_system_dir)+1);
return 1;
}
int sgx_GlobalMemoryStatusEx(MEMORYSTATUSEX *mse)
{
int retv = 0;
if(out_mse == NULL) {
printf("Error! app_mse is NULL!\n");
abort();
}
memcpy(mse, out_mse, sizeof(MEMORYSTATUSEX));
retv = 1;
return retv;
}
unsigned long sgx_GetVersion(void)
{
unsigned long retv;
retv = version_info.dwBuildNumber << 16 | version_info.dwMinorVersion << 8 | version_info.dwMajorVersion;
return retv;
}
int sgx_GetVersionEx(OSVERSIONINFOA* info)
{
memcpy(info, &version_info, sizeof(OSVERSIONINFOA));
return 1;
}
*/
// Not OCALL, but multi_thread uses multiple errno address, how to handle this?
// However, Tor seems only call errno from main thread.
int * _errno(void)
{
return out_errno;
}
char ***sgx_environ(void)
{
return out_environ;
}
int sscanf(const char *str, const char *format, ...)
{
int val_cnt = 0;
va_list args;
va_start(args, format);
for ( ; *format != '\0'; format++) {
if (*format == '%' && format[1] == 'd') {
int positive;
int value;
int *valp;
if (*str == '-') {
positive = 0;
str++;
} else
positive = 1;
if (!isdigit(*str))
break;
value = 0;
do {
value = (value * 10) - (*str - '0');
str++;
} while (isdigit(*str));
if (positive)
value = -value;
valp = va_arg(args, int *);
val_cnt++;
*valp = value;
format++;
}
else if (*format == '%' && format[1] == 'c') {
char value;
char *valp;
if (!isalpha(*str))
break;
value = *str;
str++;
valp = va_arg(args, char *);
val_cnt++;
*valp = value;
format++;
}
else if (*format == *str) {
str++;
}
else {
break;
}
}
va_end(args);
return val_cnt;
}
int sgx_vsnprintf(char *s1, size_t n, const char *s2, __va_list v)
{
vsnprintf(s1,n,s2,v);
return 0;
}
char *sgx_get_windows_conf_root(void)
{
return conf_root;
}
/*
char *strdup(const char *str)
{
char *retv = strndup(str, strlen(str));
if (retv == NULL)
{
printf("Error: strdup, errno = %d\n", sgx_errno);
}
return retv;
}
*/
/*
char *real_strdup(const char *str)
{
char *retv;
ocall_sgx_strdup(&retv, str);
return retv;
}
*/
char *_strdup(const char* s)
{
return strdup(s);
}
/* strcasecmp, strncasecmp: from apple */
typedef unsigned char u_char;
static const u_char charmap[] = {
'\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
'\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
'\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
'\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
'\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
'\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
'\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
'\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
'\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
'\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
'\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
'\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
'\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
'\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
'\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
'\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
'\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
'\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
'\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
'\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
'\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
'\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
'\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
'\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
'\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
'\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
'\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
'\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
};
int
strcasecmp(const char *s1, const char *s2)
{
register const u_char *cm = charmap,
*us1 = (const u_char *)s1,
*us2 = (const u_char *)s2;
while (cm[*us1] == cm[*us2++])
if (*us1++ == '\0')
return (0);
return (cm[*us1] - cm[*--us2]);
}
int
strncasecmp(const char *s1, const char *s2, size_t n)
{
if (n != 0) {
register const u_char *cm = charmap,
*us1 = (const u_char *)s1,
*us2 = (const u_char *)s2;
do {
if (cm[*us1] != cm[*us2++])
return (cm[*us1] - cm[*--us2]);
if (*us1++ == '\0')
break;
} while (--n != 0);
}
return (0);
}
long sgx_rand(void)
{
long retv;
sgx_read_rand((unsigned char*)&retv, sizeof(retv));
return retv;
}
char *sgx_get_torrc(void)
{
return torrc;
}
/*
int sgx_WSAIoctl(int s, unsigned long dwIoControlCode,
void* lpvInBuffer, unsigned long cbInBuffer, void* lpvOutBuffer,
unsigned long cbOutBuffer, unsigned long *lpcbBytesReturned,
void *lpOverlapped, void *LPWSAOVERLAPPED_COMPLETION_ROUTINE)
{
// This function not never called? (LibEvent)
abort(); // For debug purpose
return 0;
}
*/
sgx_file *sgx_get_file(const char *pathname)
{
int fd;
if(sgx_fileNMap.find(pathname) == sgx_fileNMap.end()) {
printf("sgx_get_file: Error! %s not exist!\n", pathname);
errno = ENOENT;
return NULL;
}
fd = sgx_fileNMap[pathname];
if(sgx_fileFMap.find(fd) == sgx_fileFMap.end()) {
printf("sgx_get_file: Error! %s not exist!\n", pathname);
errno = ENOENT;
return NULL;
}
return sgx_fileFMap[fd];
}
sgx_file *sgx_fdopen(int fd, const char *format)