void StunClient::debugStunResponse(QByteArray resp)
{
u08bits rbuf[STUN_BUFFER_SIZE];
size_t rlen = 0;
stun_buffer buf;
u08bits addr_buff[STUN_BUFFER_SIZE] = {0};
rlen = resp.length();
memcpy(rbuf, resp.data(), resp.length());
buf.len = resp.length();
memcpy(buf.buf, resp.data(), resp.length());
if (!stun_is_command_message(&buf)) {
qDebug()<<resp.length()<<("The response is not a STUN message\n");
return;
}
if (!stun_is_response(&buf)) {
qDebug()<<resp.length()<<("The response is not a reponse message\n");
// return;
}
u16bits stun_method;
u16bits stun_msg_type;
stun_method = stun_get_method_str(buf.buf, buf.len);
stun_msg_type = stun_get_msg_type_str(buf.buf, buf.len);
qDebug()<<"method:"<<stun_method<<getMethodName(stun_method)<<",msg type:"<<stun_msg_type;
int attr_type;
const u08bits *attr_value;
int attr_len;
char relayed_addr_str[32] = {0};
char mapped_addr_str[32] = {0};
char addr_str[32] = {0};
ioa_addr relayed_addr;
ioa_addr mapped_addr;
ioa_addr stun_addr;
uint32_t lifetime = 0;
uint32_t bandwidth = 0;
stun_attr_ref raw_attr = stun_attr_get_first_str(buf.buf, buf.len);
for ( ; raw_attr ; raw_attr = stun_attr_get_next_str(buf.buf, buf.len, raw_attr)) {
attr_type = stun_attr_get_type(raw_attr);
attr_value = stun_attr_get_value(raw_attr);
attr_len = stun_attr_get_len(raw_attr);
switch (attr_type) {
case STUN_ATTRIBUTE_SOFTWARE:
qDebug()<<"attr software:"<<QByteArray((char*)attr_value, attr_len);
break;
case STUN_ATTRIBUTE_XOR_MAPPED_ADDRESS:
stun_attr_get_addr_str(buf.buf, buf.len, raw_attr, &mapped_addr, NULL);
addr_to_string(&mapped_addr, (u08bits*)mapped_addr_str);
qDebug()<<"mapped addr:"<<mapped_addr_str;
break;
case STUN_ATTRIBUTE_XOR_RELAYED_ADDRESS:
stun_attr_get_addr_str(buf.buf, buf.len, raw_attr, &relayed_addr, NULL);
addr_to_string(&relayed_addr, (u08bits*)relayed_addr_str);
qDebug()<<"relayed addr:"<<relayed_addr_str;
break;
case STUN_ATTRIBUTE_MESSAGE_INTEGRITY:
qDebug()<<"message integrity:"<<attr_len<<QByteArray((char*)attr_value, attr_len).toHex();
break;
case STUN_ATTRIBUTE_LIFETIME:
memcpy(&lifetime, attr_value, attr_len);
lifetime = nswap32(lifetime);
qDebug()<<"lifetime:"<<lifetime;
break;
case STUN_ATTRIBUTE_BANDWIDTH:
memcpy(&bandwidth, attr_value, attr_len);
bandwidth = nswap32(bandwidth);
qDebug()<<"bandwidth:"<<bandwidth;
break;
case STUN_ATTRIBUTE_XOR_PEER_ADDRESS:
stun_attr_get_addr_str(buf.buf, buf.len, raw_attr, &stun_addr, NULL);
addr_to_string(&stun_addr, (u08bits*)addr_str);
qDebug()<<"xor peer addr:"<<addr_str;
break;
case STUN_ATTRIBUTE_DATA:
qDebug()<<"attr data len:"<<attr_len<<QString(QByteArray((char*)attr_value + 4, attr_len - 4)).left(50)<<"...";
break;
default:
qDebug()<<"unkown attr:"<<attr_type<<attr_len;
break;
}
}
}
u16bits stun_get_method(const stun_buffer* buf) {
return stun_get_method_str(buf->buf, (size_t)(buf->len));
}
void StunClient::processResponse(QByteArray resp, QString peer_addr)
{
u08bits rbuf[STUN_BUFFER_SIZE];
size_t rlen = 0;
stun_buffer buf;
QString mapped_addr;
u08bits addr_buff[STUN_BUFFER_SIZE] = {0};
rlen = resp.length();
memcpy(rbuf, resp.data(), resp.length());
buf.len = resp.length();
memcpy(buf.buf, resp.data(), resp.length());
if (!stun_is_command_message(&buf)) {
qDebug()<<resp.length()<<("The response is not a STUN message")<<peer_addr;
// should be a relayed raw UDP packet to peerA
emit packetReceived(resp, peer_addr);
return;
}
u16bits stun_method;
u16bits stun_msg_type;
stun_method = stun_get_method_str(buf.buf, buf.len);
stun_msg_type = stun_get_msg_type_str(buf.buf, buf.len);
qDebug()<<"method:"<<stun_method<<getMethodName(stun_method)<<",msg type:"<<stun_msg_type;
if (stun_method == STUN_METHOD_BINDING) {
} else {
this->debugStunResponse(resp);
}
// channel data
if (stun_is_indication(&buf)) {
u16bits chan_no;
size_t blen = 0;
qDebug()<<"indication data:"<<buf.len;
stun_attr_ref t_attr = stun_attr_get_first_by_type(&buf, STUN_ATTRIBUTE_DATA);
const u08bits *t_value = stun_attr_get_value(t_attr);
blen = stun_attr_get_len(t_attr);
QString xor_peer_addr = getStunAddress(resp, STUN_ATTRIBUTE_XOR_PEER_ADDRESS);
qDebug()<<"is chan msg:"<<stun_is_channel_message_str(t_value, &blen, &chan_no, 0);
qDebug()<<"chan no:"<<chan_no<<blen<<xor_peer_addr;
emit this->packetReceived(QByteArray((char*)t_value + 4, blen - 4), xor_peer_addr);
return;
}
if (!stun_is_response(&buf)) {
qDebug()<<resp.length()<<("The response is not a reponse message\n");
return;
}
if (!stun_is_success_response(&buf)) {
int err_code = 0;
u08bits err_msg[1025] = "\0";
size_t err_msg_size = sizeof(err_msg);
if (stun_is_error_response(&buf, &err_code, err_msg, err_msg_size)) {
printf("The response is an error %d (%s)\n", err_code, (char*) err_msg);
} else {
printf("The response is an unrecognized error\n");
}
// test unauth
u08bits realm[128] = {0};
u08bits nonce[256] = {0};
if (stun_is_challenge_response_str(buf.buf, buf.len, &err_code, err_msg, err_msg_size, realm, nonce)) {
qDebug()<<err_code;
qDebug()<<err_code<<(char*)err_msg<<(char*)realm<<(char*)nonce;
m_realm = QByteArray((char*)realm);
m_nonce = QByteArray((char*)nonce);
if (stun_method == STUN_METHOD_ALLOCATE) {
this->allocate((char*)realm, (char*)nonce);
}
if (stun_method == STUN_METHOD_CHANNEL_BIND) {
QThread::msleep(100);
this->channelBind(m_peer_addr);
}
}
if (err_code == 437) {
assert(err_code != 437); // allocate mismatch
}
if (err_code == 438) {
assert(err_code != 438); // stale nonce
}
if (err_code == 486) {
assert(err_code != 486); // allocate quota reached
}
return;
}
if (stun_is_binding_response(&buf)) {
ioa_addr reflexive_addr;
addr_set_any(&reflexive_addr);
if (stun_attr_get_first_addr(&buf, STUN_ATTRIBUTE_XOR_MAPPED_ADDRESS, &reflexive_addr, NULL) >= 0) {
stun_attr_ref sar = stun_attr_get_first_by_type_str(buf.buf, buf.len, STUN_ATTRIBUTE_OTHER_ADDRESS);
if (sar) {
// *rfc5780 = 1;
printf("\n========================================\n");
// printf("RFC 5780 response %d\n",++counter);
ioa_addr other_addr;
stun_attr_get_addr_str((u08bits *) buf.buf, (size_t) buf.len, sar, &other_addr, NULL);
sar = stun_attr_get_first_by_type_str(buf.buf, buf.len, STUN_ATTRIBUTE_RESPONSE_ORIGIN);
if (sar) {
ioa_addr response_origin;
stun_attr_get_addr_str((u08bits *) buf.buf, (size_t) buf.len, sar, &response_origin, NULL);
addr_debug_print(1, &response_origin, "Response origin: ");
}
addr_debug_print(1, &other_addr, "Other addr: ");
}
addr_debug_print(1, &reflexive_addr, "UDP reflexive addr");
addr_to_string(&reflexive_addr, addr_buff);
} else {
printf("Cannot read the response\n");
}
// emit got addr
if (strlen((char*)addr_buff) > 0) {
mapped_addr = QString((char*)addr_buff);
emit this->mappedAddressRecieved(mapped_addr);
}
return;
} // end bind resp
if (stun_method == STUN_METHOD_ALLOCATE) {
m_relayed_addr = this->getStunAddress(resp, STUN_ATTRIBUTE_XOR_RELAYED_ADDRESS);
this->saveAllocatePuples(m_realm, m_nonce);
emit this->allocateDone(m_relayed_addr);
if (!m_channel_refresh_timer) {
m_channel_refresh_timer = new QTimer();
QObject::connect(m_channel_refresh_timer, &QTimer::timeout, this, &StunClient::onRefreshTimeout);
}
if (!m_channel_refresh_timer->isActive()) {
m_channel_refresh_timer->start(m_channel_refresh_timeout);
}
}
if (stun_method == STUN_METHOD_CREATE_PERMISSION) {
if (!m_permission_keepalive_timer) {
emit this->createPermissionDone();
}
if (!m_permission_keepalive_timer) {
m_permission_keepalive_timer = new QTimer();
QObject::connect(m_permission_keepalive_timer, &QTimer::timeout, this, &StunClient::onPermKATimeout);
}
if (!m_permission_keepalive_timer->isActive()) {
m_permission_keepalive_timer->start(m_permission_keepalive_timeout);
}
}
if (stun_method == STUN_METHOD_CHANNEL_BIND) {
emit this->channelBindDone(m_relayed_addr);
}
if (stun_method == STUN_METHOD_REFRESH) {
qDebug()<<"refresh responsed.";
}
}