// send data
int sendData(SSL& ssl, const void* buffer, int sz)
{
int sent = 0;
if (ssl.GetError() == YasslError(SSL_ERROR_WANT_READ))
ssl.SetError(no_error);
if (ssl.GetError() == YasslError(SSL_ERROR_WANT_WRITE)) {
ssl.SetError(no_error);
ssl.SendWriteBuffered();
if (!ssl.GetError()) {
// advance sent to prvevious sent + plain size just sent
sent = ssl.useBuffers().prevSent + ssl.useBuffers().plainSz;
}
}
ssl.verfiyHandShakeComplete();
if (ssl.GetError()) return -1;
for (;;) {
int len = min(sz - sent, MAX_RECORD_SIZE);
output_buffer out;
input_buffer tmp;
Data data;
if (sent == sz) break;
if (ssl.CompressionOn()) {
if (Compress(static_cast<const opaque*>(buffer) + sent, len,
tmp) == -1) {
ssl.SetError(compress_error);
return -1;
}
data.SetData(tmp.get_size(), tmp.get_buffer());
}
else
data.SetData(len, static_cast<const opaque*>(buffer) + sent);
buildMessage(ssl, out, data);
ssl.Send(out.get_buffer(), out.get_size());
if (ssl.GetError()) {
if (ssl.GetError() == YasslError(SSL_ERROR_WANT_WRITE)) {
ssl.useBuffers().plainSz = len;
ssl.useBuffers().prevSent = sent;
}
return -1;
}
sent += len;
}
ssl.useLog().ShowData(sent, true);
return sent;
}
// do process input requests, return 0 is done, 1 is call again to complete
int DoProcessReply(SSL& ssl)
{
// wait for input if blocking
if (!ssl.useSocket().wait()) {
ssl.SetError(receive_error);
return 0;
}
uint ready = ssl.getSocket().get_ready();
if (!ready)
ready= 64;
// add buffered data if its there
input_buffer* buffered = ssl.useBuffers().TakeRawInput();
uint buffSz = buffered ? buffered->get_size() : 0;
input_buffer buffer(buffSz + ready);
if (buffSz) {
buffer.assign(buffered->get_buffer(), buffSz);
ysDelete(buffered);
buffered = 0;
}
// add new data
uint read = ssl.useSocket().receive(buffer.get_buffer() + buffSz, ready);
if (read == static_cast<uint>(-1)) {
ssl.SetError(receive_error);
return 0;
}
buffer.add_size(read);
uint offset = 0;
const MessageFactory& mf = ssl.getFactory().getMessage();
// old style sslv2 client hello?
if (ssl.getSecurity().get_parms().entity_ == server_end &&
ssl.getStates().getServer() == clientNull)
if (buffer.peek() != handshake) {
ProcessOldClientHello(buffer, ssl);
if (ssl.GetError())
return 0;
}
while(!buffer.eof()) {
// each record
RecordLayerHeader hdr;
bool needHdr = false;
if (static_cast<uint>(RECORD_HEADER) > buffer.get_remaining())
needHdr = true;
else {
buffer >> hdr;
ssl.verifyState(hdr);
}
if (ssl.GetError())
return 0;
// make sure we have enough input in buffer to process this record
if (needHdr || hdr.length_ > buffer.get_remaining()) {
// put header in front for next time processing
uint extra = needHdr ? 0 : RECORD_HEADER;
uint sz = buffer.get_remaining() + extra;
ssl.useBuffers().SetRawInput(NEW_YS input_buffer(sz,
buffer.get_buffer() + buffer.get_current() - extra, sz));
return 1;
}
while (buffer.get_current() < hdr.length_ + RECORD_HEADER + offset) {
// each message in record, can be more than 1 if not encrypted
if (ssl.GetError())
return 0;
if (ssl.getSecurity().get_parms().pending_ == false) { // cipher on
// sanity check for malicious/corrupted/illegal input
if (buffer.get_remaining() < hdr.length_) {
ssl.SetError(bad_input);
return 0;
}
decrypt_message(ssl, buffer, hdr.length_);
if (ssl.GetError())
return 0;
}
mySTL::auto_ptr<Message> msg(mf.CreateObject(hdr.type_));
if (!msg.get()) {
ssl.SetError(factory_error);
return 0;
}
buffer >> *msg;
msg->Process(buffer, ssl);
if (ssl.GetError())
return 0;
}
offset += hdr.length_ + RECORD_HEADER;
}
return 0;
}