godot/modules/websocket/emws_peer.cpp
2018-02-06 14:10:13 +01:00

174 lines
4.8 KiB
C++

/*************************************************************************/
/* emws_peer.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifdef JAVASCRIPT_ENABLED
#include "emws_peer.h"
#include "core/io/ip.h"
void EMWSPeer::set_sock(int p_sock) {
peer_sock = p_sock;
in_buffer.clear();
queue_count = 0;
}
void EMWSPeer::set_write_mode(WriteMode p_mode) {
write_mode = p_mode;
}
EMWSPeer::WriteMode EMWSPeer::get_write_mode() const {
return write_mode;
}
void EMWSPeer::read_msg(uint8_t *p_data, uint32_t p_size, bool p_is_string) {
if (in_buffer.space_left() < p_size + 5) {
ERR_EXPLAIN("Buffer full! Dropping data");
ERR_FAIL();
}
uint8_t is_string = p_is_string ? 1 : 0;
in_buffer.write((uint8_t *)&p_size, 4);
in_buffer.write((uint8_t *)&is_string, 1);
in_buffer.write(p_data, p_size);
queue_count++;
}
Error EMWSPeer::put_packet(const uint8_t *p_buffer, int p_buffer_size) {
int is_bin = write_mode == WebSocketPeer::WRITE_MODE_BINARY ? 1 : 0;
/* clang-format off */
EM_ASM({
var sock = Module.IDHandler.get($0);
var bytes_array = new Uint8Array($2);
var i = 0;
for(i=0; i<$2; i++) {
bytes_array[i] = getValue($1+i, 'i8');
}
if ($3) {
sock.send(bytes_array.buffer);
} else {
var string = new TextDecoder("utf-8").decode(bytes_array);
sock.send(string);
}
}, peer_sock, p_buffer, p_buffer_size, is_bin);
/* clang-format on */
return OK;
};
Error EMWSPeer::get_packet(const uint8_t **r_buffer, int &r_buffer_size) {
if (queue_count == 0)
return ERR_UNAVAILABLE;
uint32_t to_read = 0;
uint32_t left = 0;
uint8_t is_string = 0;
r_buffer_size = 0;
in_buffer.read((uint8_t *)&to_read, 4);
--queue_count;
left = in_buffer.data_left();
if (left < to_read + 1) {
in_buffer.advance_read(left);
return FAILED;
}
in_buffer.read(&is_string, 1);
_was_string = is_string == 1;
in_buffer.read(packet_buffer, to_read);
*r_buffer = packet_buffer;
r_buffer_size = to_read;
return OK;
};
int EMWSPeer::get_available_packet_count() const {
return queue_count;
};
bool EMWSPeer::was_string_packet() const {
return _was_string;
};
bool EMWSPeer::is_connected_to_host() const {
return peer_sock != -1;
};
void EMWSPeer::close() {
if (peer_sock != -1) {
/* clang-format off */
EM_ASM({
var sock = Module.IDHandler.get($0);
sock.close();
Module.IDHandler.remove($0);
}, peer_sock);
/* clang-format on */
}
peer_sock = -1;
queue_count = 0;
in_buffer.clear();
};
IP_Address EMWSPeer::get_connected_host() const {
return IP_Address();
};
uint16_t EMWSPeer::get_connected_port() const {
return 1025;
};
EMWSPeer::EMWSPeer() {
peer_sock = -1;
queue_count = 0;
_was_string = false;
in_buffer.resize(16);
write_mode = WRITE_MODE_BINARY;
};
EMWSPeer::~EMWSPeer() {
in_buffer.resize(0);
close();
};
#endif // JAVASCRIPT_ENABLED