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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmConnection.h"
#include "cmServer.h"
#include "cm_uv.h"
#include <cassert>
#include <cstring>
struct write_req_t
{
uv_write_t req;
uv_buf_t buf;
};
void cmEventBasedConnection::on_alloc_buffer(uv_handle_t* handle,
size_t suggested_size,
uv_buf_t* buf)
{
(void)(handle);
char* rawBuffer = new char[suggested_size];
*buf = uv_buf_init(rawBuffer, static_cast<unsigned int>(suggested_size));
}
void cmEventBasedConnection::on_read(uv_stream_t* stream, ssize_t nread,
const uv_buf_t* buf)
{
auto conn = reinterpret_cast<cmEventBasedConnection*>(stream->data);
if (conn) {
if (nread >= 0) {
conn->ReadData(std::string(buf->base, buf->base + nread));
} else {
conn->OnDisconnect(static_cast<int>(nread));
}
}
delete[](buf->base);
}
void cmEventBasedConnection::on_close(uv_handle_t* /*handle*/)
{
}
void cmEventBasedConnection::on_write(uv_write_t* req, int status)
{
(void)(status);
// Free req and buffer
write_req_t* wr = reinterpret_cast<write_req_t*>(req);
delete[](wr->buf.base);
delete wr;
}
void cmEventBasedConnection::on_new_connection(uv_stream_t* stream, int status)
{
(void)(status);
auto conn = reinterpret_cast<cmEventBasedConnection*>(stream->data);
if (conn) {
conn->Connect(stream);
}
}
bool cmEventBasedConnection::IsOpen() const
{
return this->WriteStream != nullptr;
}
void cmEventBasedConnection::WriteData(const std::string& _data)
{
#ifndef NDEBUG
auto curr_thread_id = uv_thread_self();
assert(this->Server);
assert(uv_thread_equal(&curr_thread_id, &this->Server->ServeThreadId));
#endif
auto data = _data;
assert(this->WriteStream);
if (BufferStrategy) {
data = BufferStrategy->BufferOutMessage(data);
}
auto ds = data.size();
write_req_t* req = new write_req_t;
req->req.data = this;
req->buf = uv_buf_init(new char[ds], static_cast<unsigned int>(ds));
memcpy(req->buf.base, data.c_str(), ds);
uv_write(reinterpret_cast<uv_write_t*>(req),
static_cast<uv_stream_t*>(this->WriteStream), &req->buf, 1,
on_write);
}
void cmEventBasedConnection::ReadData(const std::string& data)
{
this->RawReadBuffer += data;
if (BufferStrategy) {
std::string packet = BufferStrategy->BufferMessage(this->RawReadBuffer);
do {
ProcessRequest(packet);
packet = BufferStrategy->BufferMessage(this->RawReadBuffer);
} while (!packet.empty());
} else {
ProcessRequest(this->RawReadBuffer);
this->RawReadBuffer.clear();
}
}
cmEventBasedConnection::cmEventBasedConnection(
cmConnectionBufferStrategy* bufferStrategy)
: BufferStrategy(bufferStrategy)
{
}
void cmEventBasedConnection::Connect(uv_stream_t* server)
{
(void)server;
Server->OnConnected(nullptr);
}
void cmEventBasedConnection::OnDisconnect(int onerror)
{
(void)onerror;
this->OnConnectionShuttingDown();
if (this->Server) {
this->Server->OnDisconnect(this);
}
}
cmConnection::~cmConnection()
{
}
bool cmConnection::OnConnectionShuttingDown()
{
this->Server = nullptr;
return true;
}
void cmConnection::SetServer(cmServerBase* s)
{
Server = s;
}
void cmConnection::ProcessRequest(const std::string& request)
{
Server->ProcessRequest(this, request);
}
bool cmConnection::OnServeStart(std::string* errString)
{
(void)errString;
return true;
}
bool cmEventBasedConnection::OnConnectionShuttingDown()
{
if (this->WriteStream) {
this->WriteStream->data = nullptr;
}
if (this->ReadStream) {
this->ReadStream->data = nullptr;
}
this->ReadStream = nullptr;
this->WriteStream = nullptr;
return true;
}
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