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Atmosphere/stratosphere/dmnt.gen2/source/dmnt2_transport_session.cpp

128 lines
4.1 KiB
C++

/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "dmnt2_transport_layer.hpp"
#include "dmnt2_transport_session.hpp"
#include "dmnt2_debug_log.hpp"
namespace ams::dmnt {
TransportSession::TransportSession(int fd) : m_socket(fd), m_valid(true) {
/* Create our thread. */
R_ABORT_UNLESS(os::CreateThread(std::addressof(m_receive_thread), ReceiveThreadEntry, this, m_receive_thread_stack, sizeof(m_receive_thread_stack), os::HighestThreadPriority - 1));
/* Start our thread. */
os::StartThread(std::addressof(m_receive_thread));
/* Note that we connected. */
AMS_DMNT2_GDB_LOG_INFO("Created Session %d\n", m_socket);
}
TransportSession::~TransportSession() {
/* Note that we connected. */
AMS_DMNT2_GDB_LOG_INFO("Closing Session %d\n", m_socket);
/* Invalidate our receive buffer. */
m_receive_buffer.Invalidate();
/* Shutdown our socket. */
transport::Shutdown(m_socket);
/* Wait for our thread. */
os::WaitThread(std::addressof(m_receive_thread));
os::DestroyThread(std::addressof(m_receive_thread));
/* Close our socket. */
transport::Close(m_socket);
}
bool TransportSession::WaitToBeReadable() {
return m_receive_buffer.WaitToBeReadable();
}
bool TransportSession::WaitToBeReadable(TimeSpan timeout) {
return m_receive_buffer.WaitToBeReadable(timeout);
}
util::optional<char> TransportSession::GetChar() {
/* Wait for us to have data. */
m_receive_buffer.WaitToBeReadable();
/* Get our data. */
char c;
if (m_receive_buffer.Read(std::addressof(c), sizeof(c)) > 0) {
return c;
} else {
return util::nullopt;
}
}
ssize_t TransportSession::PutChar(char c) {
/* Send the character. */
const auto sent = transport::Send(m_socket, std::addressof(c), sizeof(c), 0);
if (sent < 0) {
m_valid = false;
}
return sent;
}
ssize_t TransportSession::PutString(const char *str) {
/* Repeatedly send until all is sent. */
const size_t len = std::strlen(str);
size_t remaining = len;
while (remaining > 0) {
const auto sent = transport::Send(m_socket, str, remaining, 0);
if (sent >= 0) {
remaining -= sent;
str += sent;
} else {
m_valid = false;
return sent;
}
}
return len;
}
void TransportSession::ReceiveThreadFunction() {
/* Create temporary buffer. */
u8 buffer[TransportReceiveBuffer::ReceiveBufferSize];
/* Loop receiving data. */
while (true) {
/* Receive data. */
const auto res = transport::Recv(m_socket, buffer, sizeof(buffer), 0);
if (res > 0) {
/* Write the data to our buffer. */
m_receive_buffer.WaitToBeWritable();
m_receive_buffer.Write(buffer, res);
} else {
/* Otherwise, if we got an error other than "try again", we're done. */
if (!transport::IsLastErrorEAgain()) {
AMS_DMNT2_GDB_LOG_INFO("Session %d invalid, res=%ld, err=%d\n", m_socket, res, static_cast<int>(transport::GetLastError()));
m_valid = false;
break;
}
}
}
/* Invalidate our receive buffer. */
m_receive_buffer.Invalidate();
}
}