int main(int argc, char **argv)
{
int port = 0;
int messagenumber = 5;
char local_addr[256];
int c;
int mclient = 1;
char peer_address[129] = "\0";
int peer_port = PEER_DEFAULT_PORT;
char rest_api_separator = ':';
int use_null_cipher=0;
set_logfile("stdout");
set_execdir();
set_system_parameters(0);
ns_bzero(local_addr, sizeof(local_addr));
while ((c = getopt(argc, argv, "d:p:l:n:L:m:e:r:u:w:i:k:z:W:C:E:F:vsyhcxXgtTSAPDNOUHMRIGB")) != -1) {
switch (c){
case 'B':
random_disconnect = 1;
break;
case 'G':
extra_requests = 1;
break;
case 'F':
STRCPY(cipher_suite,optarg);
break;
case 'I':
no_permissions = 1;
break;
case 'M':
mobility = 1;
break;
case 'H':
shatype = SHATYPE_SHA256;
break;
case 'E':
{
char* fn = find_config_file(optarg,1);
if(!fn) {
fprintf(stderr,"ERROR: file %s not found\n",optarg);
exit(-1);
}
STRCPY(ca_cert_file,fn);
}
break;
case 'O':
dos = 1;
break;
case 'C':
rest_api_separator=*optarg;
break;
case 'D':
mandatory_channel_padding = 1;
break;
case 'N':
negative_test = 1;
break;
case 'R':
negative_protocol_test = 1;
break;
case 'z':
RTP_PACKET_INTERVAL = atoi(optarg);
break;
case 'A':
use_short_term = 1;
break;
case 'u':
STRCPY(g_uname, optarg);
break;
case 'w':
STRCPY(g_upwd, optarg);
break;
case 'g':
dont_fragment = 1;
break;
case 'd':
STRCPY(client_ifname, optarg);
break;
case 'x':
default_address_family = STUN_ATTRIBUTE_REQUESTED_ADDRESS_FAMILY_VALUE_IPV6;
break;
case 'X':
default_address_family = STUN_ATTRIBUTE_REQUESTED_ADDRESS_FAMILY_VALUE_IPV4;
break;
case 'l':
clmessage_length = atoi(optarg);
break;
case 's':
do_not_use_channel = 1;
break;
case 'n':
messagenumber = atoi(optarg);
break;
case 'p':
port = atoi(optarg);
break;
case 'L':
STRCPY(local_addr, optarg);
break;
case 'e':
STRCPY(peer_address, optarg);
break;
case 'r':
peer_port = atoi(optarg);
break;
case 'v':
clnet_verbose = TURN_VERBOSE_NORMAL;
break;
case 'h':
hang_on = 1;
break;
case 'c':
no_rtcp = 1;
break;
case 'm':
mclient = atoi(optarg);
break;
case 'y':
c2c = 1;
break;
case 't':
use_tcp = 1;
break;
case 'P':
passive_tcp = 1;
/* implies 'T': */
/* no break */
case 'T':
relay_transport = STUN_ATTRIBUTE_TRANSPORT_TCP_VALUE;
break;
case 'U':
use_null_cipher = 1;
/* implies 'S' */
/* no break */
case 'S':
use_secure = 1;
break;
case 'W':
g_use_auth_secret_with_timestamp = 1;
STRCPY(g_auth_secret,optarg);
break;
case 'i':
{
char* fn = find_config_file(optarg,1);
if(!fn) {
fprintf(stderr,"ERROR: file %s not found\n",optarg);
exit(-1);
}
STRCPY(cert_file,fn);
free(fn);
}
break;
case 'k':
{
char* fn = find_config_file(optarg,1);
if(!fn) {
fprintf(stderr,"ERROR: file %s not found\n",optarg);
exit(-1);
}
STRCPY(pkey_file,fn);
free(fn);
}
break;
default:
fprintf(stderr, "%s\n", Usage);
exit(1);
}
}
if(g_use_auth_secret_with_timestamp) {
if(use_short_term) {
fprintf(stderr,"ERROR: You cannot use authentication secret (REST API) with short-term credentials mechanism.\n");
exit(-1);
}
{
char new_uname[1025];
const unsigned long exp_time = 3600 * 24; /* one day */
if(g_uname[0]) {
snprintf(new_uname,sizeof(new_uname),"%lu%c%s",(unsigned long)time(NULL) + exp_time,rest_api_separator, (char*)g_uname);
} else {
snprintf(new_uname,sizeof(new_uname),"%lu", (unsigned long)time(NULL) + exp_time);
}
STRCPY(g_uname,new_uname);
}
{
u08bits hmac[MAXSHASIZE];
unsigned int hmac_len;
switch(shatype) {
case SHATYPE_SHA256:
hmac_len = SHA256SIZEBYTES;
break;
default:
hmac_len = SHA1SIZEBYTES;
};
hmac[0]=0;
if(stun_calculate_hmac(g_uname, strlen((char*)g_uname), (u08bits*)g_auth_secret, strlen(g_auth_secret), hmac, &hmac_len, shatype)>=0) {
size_t pwd_length = 0;
char *pwd = base64_encode(hmac,hmac_len,&pwd_length);
if(pwd) {
if(pwd_length>0) {
ns_bcopy(pwd,g_upwd,pwd_length);
g_upwd[pwd_length]=0;
}
}
free(pwd);
}
}
}
if(is_TCP_relay()) {
dont_fragment = 0;
no_rtcp = 1;
c2c = 1;
use_tcp = 1;
do_not_use_channel = 1;
}
if(port == 0) {
if(use_secure)
port = DEFAULT_STUN_TLS_PORT;
else
port = DEFAULT_STUN_PORT;
}
if (clmessage_length < (int) sizeof(message_info))
clmessage_length = (int) sizeof(message_info);
const int max_header = 100;
if(clmessage_length > (int)(STUN_BUFFER_SIZE-max_header)) {
fprintf(stderr,"Message length was corrected to %d\n",(STUN_BUFFER_SIZE-max_header));
clmessage_length = (int)(STUN_BUFFER_SIZE-max_header);
}
if (optind >= argc) {
fprintf(stderr, "%s\n", Usage);
exit(-1);
}
if (!c2c) {
if (make_ioa_addr((const u08bits*) peer_address, peer_port, &peer_addr) < 0)
return -1;
if(peer_addr.ss.sa_family == AF_INET6)
default_address_family = STUN_ATTRIBUTE_REQUESTED_ADDRESS_FAMILY_VALUE_IPV6;
}
/* SSL Init ==>> */
if(use_secure) {
SSL_load_error_strings();
OpenSSL_add_ssl_algorithms();
const char *csuite = "ALL"; //"AES256-SHA" "DH"
if(use_null_cipher)
csuite = "eNULL";
else if(cipher_suite[0])
csuite=cipher_suite;
if(use_tcp) {
root_tls_ctx[root_tls_ctx_num] = SSL_CTX_new(SSLv23_client_method());
SSL_CTX_set_cipher_list(root_tls_ctx[root_tls_ctx_num], csuite);
root_tls_ctx_num++;
root_tls_ctx[root_tls_ctx_num] = SSL_CTX_new(SSLv3_client_method());
SSL_CTX_set_cipher_list(root_tls_ctx[root_tls_ctx_num], csuite);
root_tls_ctx_num++;
root_tls_ctx[root_tls_ctx_num] = SSL_CTX_new(TLSv1_client_method());
SSL_CTX_set_cipher_list(root_tls_ctx[root_tls_ctx_num], csuite);
root_tls_ctx_num++;
#if defined(SSL_TXT_TLSV1_1)
root_tls_ctx[root_tls_ctx_num] = SSL_CTX_new(TLSv1_1_client_method());
SSL_CTX_set_cipher_list(root_tls_ctx[root_tls_ctx_num], csuite);
root_tls_ctx_num++;
#if defined(SSL_TXT_TLSV1_2)
root_tls_ctx[root_tls_ctx_num] = SSL_CTX_new(TLSv1_2_client_method());
SSL_CTX_set_cipher_list(root_tls_ctx[root_tls_ctx_num], csuite);
root_tls_ctx_num++;
#endif
#endif
} else {
#if defined(TURN_NO_DTLS)
fprintf(stderr,"ERROR: DTLS is not supported.\n");
exit(-1);
#else
if(OPENSSL_VERSION_NUMBER < 0x10000000L) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_WARNING, "WARNING: OpenSSL version is rather old, DTLS may not be working correctly.\n");
}
root_tls_ctx[root_tls_ctx_num] = SSL_CTX_new(DTLSv1_client_method());
SSL_CTX_set_cipher_list(root_tls_ctx[root_tls_ctx_num], csuite);
root_tls_ctx_num++;
#endif
}
int sslind = 0;
for(sslind = 0; sslind<root_tls_ctx_num; sslind++) {
if(cert_file[0]) {
if (!SSL_CTX_use_certificate_chain_file(root_tls_ctx[sslind], cert_file)) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_ERROR, "\nERROR: no certificate found!\n");
exit(-1);
}
}
if (!SSL_CTX_use_PrivateKey_file(root_tls_ctx[sslind], pkey_file,
SSL_FILETYPE_PEM)) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_ERROR, "\nERROR: no private key found!\n");
exit(-1);
}
if(cert_file[0]) {
if (!SSL_CTX_check_private_key(root_tls_ctx[sslind])) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_ERROR, "\nERROR: invalid private key!\n");
exit(-1);
}
}
if (ca_cert_file[0]) {
if (!SSL_CTX_load_verify_locations(root_tls_ctx[sslind], ca_cert_file, NULL )) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_ERROR,
"ERROR: cannot load CA from file: %s\n",
ca_cert_file);
}
/* Set to require peer (client) certificate verification */
SSL_CTX_set_verify(root_tls_ctx[sslind], SSL_VERIFY_PEER, NULL );
/* Set the verification depth to 9 */
SSL_CTX_set_verify_depth(root_tls_ctx[sslind], 9);
} else {
SSL_CTX_set_verify(root_tls_ctx[sslind], SSL_VERIFY_NONE, NULL );
}
if(!use_tcp)
SSL_CTX_set_read_ahead(root_tls_ctx[sslind], 1);
}
}
start_mclient(argv[optind], port, client_ifname, local_addr, messagenumber, mclient);
return 0;
}
static int clnet_allocate(int verbose,
app_ur_conn_info *clnet_info,
ioa_addr *relay_addr,
int af,
char *turn_addr, u16bits *turn_port) {
int af_cycle = 0;
int reopen_socket = 0;
int allocate_finished;
stun_buffer request_message, response_message;
beg_allocate:
allocate_finished=0;
while (!allocate_finished && af_cycle++ < 32) {
int allocate_sent = 0;
if(reopen_socket && !use_tcp) {
socket_closesocket(clnet_info->fd);
clnet_info->fd = -1;
if (clnet_connect(addr_get_port(&(clnet_info->remote_addr)), clnet_info->rsaddr, (u08bits*)clnet_info->ifname, clnet_info->lsaddr,
verbose, clnet_info) < 0) {
exit(-1);
}
reopen_socket = 0;
}
int af4 = dual_allocation || (af == STUN_ATTRIBUTE_REQUESTED_ADDRESS_FAMILY_VALUE_IPV4);
int af6 = dual_allocation || (af == STUN_ATTRIBUTE_REQUESTED_ADDRESS_FAMILY_VALUE_IPV6);
uint64_t reservation_token = 0;
char* rt = NULL;
int ep = !no_rtcp && !dual_allocation;
if(!no_rtcp) {
if (!never_allocate_rtcp && allocate_rtcp) {
reservation_token = ioa_ntoh64(current_reservation_token);
rt = (char*) (&reservation_token);
}
}
if(is_TCP_relay()) {
ep = -1;
} else if(rt) {
ep = -1;
} else if(!ep) {
ep = (((u08bits)random()) % 2);
ep = ep-1;
}
if(!dos)
stun_set_allocate_request(&request_message, UCLIENT_SESSION_LIFETIME, af4, af6, relay_transport, mobility, rt, ep);
else
stun_set_allocate_request(&request_message, UCLIENT_SESSION_LIFETIME/3, af4, af6, relay_transport, mobility, rt, ep);
if(bps)
stun_attr_add_bandwidth_str(request_message.buf, (size_t*)(&(request_message.len)), bps);
if(dont_fragment)
stun_attr_add(&request_message, STUN_ATTRIBUTE_DONT_FRAGMENT, NULL, 0);
add_origin(&request_message);
if(add_integrity(clnet_info, &request_message)<0) return -1;
stun_attr_add_fingerprint_str(request_message.buf,(size_t*)&(request_message.len));
while (!allocate_sent) {
int len = send_buffer(clnet_info, &request_message,0,0);
if (len > 0) {
if (verbose) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO, "allocate sent\n");
}
allocate_sent = 1;
} else {
perror("send");
exit(1);
}
}
////////////<<==allocate send
if(not_rare_event()) return 0;
////////allocate response==>>
{
int allocate_received = 0;
while (!allocate_received) {
int len = recv_buffer(clnet_info, &response_message, 1, 0, NULL, &request_message);
if (len > 0) {
if (verbose) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO,
"allocate response received: \n");
}
response_message.len = len;
int err_code = 0;
u08bits err_msg[129];
if (stun_is_success_response(&response_message)) {
allocate_received = 1;
allocate_finished = 1;
if(clnet_info->nonce[0]) {
if(check_integrity(clnet_info, &response_message)<0)
return -1;
}
if (verbose) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO, "success\n");
}
{
int found = 0;
stun_attr_ref sar = stun_attr_get_first(&response_message);
while (sar) {
int attr_type = stun_attr_get_type(sar);
if(attr_type == STUN_ATTRIBUTE_XOR_RELAYED_ADDRESS) {
if (stun_attr_get_addr(&response_message, sar, relay_addr, NULL) < 0) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO,
"%s: !!!: relay addr cannot be received (1)\n",
__FUNCTION__);
return -1;
} else {
if (verbose) {
ioa_addr raddr;
memcpy(&raddr, relay_addr,sizeof(ioa_addr));
addr_debug_print(verbose, &raddr,"Received relay addr");
}
if(!addr_any(relay_addr)) {
if(relay_addr->ss.sa_family == AF_INET) {
if(default_address_family != STUN_ATTRIBUTE_REQUESTED_ADDRESS_FAMILY_VALUE_IPV6) {
found = 1;
addr_cpy(&(clnet_info->relay_addr),relay_addr);
break;
}
}
if(relay_addr->ss.sa_family == AF_INET6) {
if(default_address_family == STUN_ATTRIBUTE_REQUESTED_ADDRESS_FAMILY_VALUE_IPV6) {
found = 1;
addr_cpy(&(clnet_info->relay_addr),relay_addr);
break;
}
}
}
}
}
sar = stun_attr_get_next(&response_message,sar);
}
if(!found) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO,
"%s: !!!: relay addr cannot be received (2)\n",
__FUNCTION__);
return -1;
}
}
stun_attr_ref rt_sar = stun_attr_get_first_by_type(
&response_message, STUN_ATTRIBUTE_RESERVATION_TOKEN);
uint64_t rtv = stun_attr_get_reservation_token_value(rt_sar);
current_reservation_token = rtv;
if (verbose)
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO,
"%s: rtv=%llu\n", __FUNCTION__, (long long unsigned int)rtv);
read_mobility_ticket(clnet_info, &response_message);
} else if (stun_is_challenge_response_str(response_message.buf, (size_t)response_message.len,
&err_code,err_msg,sizeof(err_msg),
clnet_info->realm,clnet_info->nonce,
clnet_info->server_name, &(clnet_info->oauth))) {
goto beg_allocate;
} else if (stun_is_error_response(&response_message, &err_code,err_msg,sizeof(err_msg))) {
allocate_received = 1;
if(err_code == 300) {
if(clnet_info->nonce[0]) {
if(check_integrity(clnet_info, &response_message)<0)
return -1;
}
ioa_addr alternate_server;
if(stun_attr_get_first_addr(&response_message, STUN_ATTRIBUTE_ALTERNATE_SERVER, &alternate_server, NULL)==-1) {
//error
} else if(turn_addr && turn_port){
addr_to_string_no_port(&alternate_server, (u08bits*)turn_addr);
*turn_port = (u16bits)addr_get_port(&alternate_server);
}
}
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO, "error %d (%s)\n",
err_code,(char*)err_msg);
if (err_code != 437) {
allocate_finished = 1;
current_reservation_token = 0;
return -1;
} else {
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO,
"trying allocate again %d...\n", err_code);
sleep(1);
reopen_socket = 1;
}
} else {
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO,
"unknown allocate response\n");
/* Try again ? */
}
} else {
perror("recv");
exit(-1);
break;
}
}
}
}
////////////<<== allocate response received
if(rare_event()) return 0;
if(!allocate_finished) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_ERROR,
"Cannot complete Allocation\n");
exit(-1);
}
allocate_rtcp = !allocate_rtcp;
if (1) {
af_cycle = 0;
if(clnet_info->s_mobile_id[0]) {
int fd = clnet_info->fd;
SSL* ssl = clnet_info->ssl;
int close_now = (int)(random()%2);
if(close_now) {
int close_socket = (int)(random()%2);
if(ssl && !close_socket) {
SSL_shutdown(ssl);
SSL_FREE(ssl);
fd = -1;
} else if(fd>=0) {
close(fd);
fd = -1;
ssl = NULL;
}
}
app_ur_conn_info ci;
ns_bcopy(clnet_info,&ci,sizeof(ci));
ci.fd = -1;
ci.ssl = NULL;
clnet_info->fd = -1;
clnet_info->ssl = NULL;
//Reopen:
if(clnet_connect(addr_get_port(&(ci.remote_addr)), ci.rsaddr,
(unsigned char*)ci.ifname, ci.lsaddr, clnet_verbose,
clnet_info)<0) {
exit(-1);
}
if(ssl) {
SSL_shutdown(ssl);
SSL_FREE(ssl);
} else if(fd>=0) {
close(fd);
}
}
beg_refresh:
if(af_cycle++>32) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_ERROR,
"Cannot complete Refresh\n");
exit(-1);
}
//==>>refresh request, for an example only:
{
int refresh_sent = 0;
stun_init_request(STUN_METHOD_REFRESH, &request_message);
uint32_t lt = htonl(UCLIENT_SESSION_LIFETIME);
stun_attr_add(&request_message, STUN_ATTRIBUTE_LIFETIME, (const char*) <, 4);
if(clnet_info->s_mobile_id[0]) {
stun_attr_add(&request_message, STUN_ATTRIBUTE_MOBILITY_TICKET, (const char*)clnet_info->s_mobile_id, strlen(clnet_info->s_mobile_id));
}
if(dual_allocation && !mobility) {
int t = ((u08bits)random())%3;
if(t) {
u08bits field[4];
field[0] = (t==1) ? (u08bits)STUN_ATTRIBUTE_REQUESTED_ADDRESS_FAMILY_VALUE_IPV4 : (u08bits)STUN_ATTRIBUTE_REQUESTED_ADDRESS_FAMILY_VALUE_IPV6;
field[1]=0;
field[2]=0;
field[3]=0;
stun_attr_add(&request_message, STUN_ATTRIBUTE_REQUESTED_ADDRESS_FAMILY, (const char*) field, 4);
}
}
add_origin(&request_message);
if(add_integrity(clnet_info, &request_message)<0) return -1;
stun_attr_add_fingerprint_str(request_message.buf,(size_t*)&(request_message.len));
while (!refresh_sent) {
int len = send_buffer(clnet_info, &request_message, 0,0);
if (len > 0) {
if (verbose) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO, "refresh sent\n");
}
refresh_sent = 1;
if(clnet_info->s_mobile_id[0]) {
usleep(10000);
send_buffer(clnet_info, &request_message, 0,0);
}
} else {
perror("send");
exit(1);
}
}
}
if(not_rare_event()) return 0;
////////refresh response==>>
{
int refresh_received = 0;
while (!refresh_received) {
int len = recv_buffer(clnet_info, &response_message, 1, 0, NULL, &request_message);
if(clnet_info->s_mobile_id[0]) {
len = recv_buffer(clnet_info, &response_message, 1, 0, NULL, &request_message);
}
if (len > 0) {
if (verbose) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO,
"refresh response received: \n");
}
response_message.len = len;
int err_code = 0;
u08bits err_msg[129];
if (stun_is_success_response(&response_message)) {
read_mobility_ticket(clnet_info, &response_message);
refresh_received = 1;
if (verbose) {
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO, "success\n");
}
} else if (stun_is_challenge_response_str(response_message.buf, (size_t)response_message.len,
&err_code,err_msg,sizeof(err_msg),
clnet_info->realm,clnet_info->nonce,
clnet_info->server_name, &(clnet_info->oauth))) {
goto beg_refresh;
} else if (stun_is_error_response(&response_message, &err_code,err_msg,sizeof(err_msg))) {
refresh_received = 1;
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO, "error %d (%s)\n",
err_code,(char*)err_msg);
return -1;
} else {
TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO, "unknown refresh response\n");
/* Try again ? */
}
} else {
perror("recv");
exit(-1);
break;
}
}
}
}
return 0;
}
