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WebSocket module now uses wslay library. 

Both client and server are supported on native builds (as usual).

SSL server is still not supported, but will soon be possible with this
new library.

The API stays the same, we just need to work out potential issues due to
this big library switch.
This commit is contained in:
Fabio Alessandrelli 2019-06-24 15:46:24 +02:00
parent c13be79594
commit 9e303ef71c
27 changed files with 4130 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
COPYRIGHT.txt
View File

@ -366,6 +366,11 @@ Copyright: 2011, Khaled Mamou
2003-2009, Erwin Coumans 2003-2009, Erwin Coumans
License: BSD-3-clause License: BSD-3-clause
Files: ./thirdparty/wslay/
Comment: Wslay
Copyright: 2011-2015, Tatsuhiro Tsujikawa
License: Expat
Files: ./thirdparty/xatlas/ Files: ./thirdparty/xatlas/
Comment: xatlas Comment: xatlas
Copyright: 2018, Jonathan Young Copyright: 2018, Jonathan Young

5
core/io/stream_peer_tcp.cpp
View File

@ -217,6 +217,11 @@ Error StreamPeerTCP::read(uint8_t *p_buffer, int p_bytes, int &r_received, bool
to_read -= read; to_read -= read;
total_read += read; total_read += read;
if (!p_block) {
r_received = total_read;
return OK;
}
} }
} }

23
modules/websocket/SCsub
View File

@ -5,7 +5,7 @@ Import('env_modules')
# Thirdparty source files # Thirdparty source files
env_lws = env_modules.Clone() env_ws = env_modules.Clone()
if env['builtin_libwebsockets'] and not env["platform"] == "javascript": # already builtin for javascript if env['builtin_libwebsockets'] and not env["platform"] == "javascript": # already builtin for javascript
thirdparty_dir = "#thirdparty/libwebsockets/" thirdparty_dir = "#thirdparty/libwebsockets/"
@ -90,4 +90,23 @@ if env['builtin_libwebsockets'] and not env["platform"] == "javascript": # alrea
env_thirdparty.disable_warnings() env_thirdparty.disable_warnings()
env_thirdparty.add_source_files(env.modules_sources, thirdparty_sources) env_thirdparty.add_source_files(env.modules_sources, thirdparty_sources)
env_lws.add_source_files(env.modules_sources, "*.cpp") wslay_dir = "#thirdparty/wslay/"
wslay_sources = [
"wslay_net.c",
"wslay_event.c",
"wslay_queue.c",
"wslay_stack.c",
"wslay_frame.c",
]
wslay_sources = [wslay_dir + s for s in wslay_sources]
env_ws.Prepend(CPPPATH=[wslay_dir + "includes/"])
env_ws.Append(CPPFLAGS=["-DHAVE_CONFIG_H"])
if env["platform"] == "windows" or env["platform"] == "uwp":
env_ws.Append(CPPFLAGS=["-DHAVE_WINSOCK2_H"])
else:
env_ws.Append(CPPFLAGS=["-DHAVE_NETINET_IN_H"])
env_wslay = env_ws.Clone()
env_wslay.disable_warnings()
env_wslay.add_source_files(env.modules_sources, wslay_sources)
env_ws.add_source_files(env.modules_sources, "*.cpp")

2
modules/websocket/doc_classes/WebSocketClient.xml
View File

@ -22,7 +22,7 @@
<argument index="2" name="gd_mp_api" type="bool" default="false"> <argument index="2" name="gd_mp_api" type="bool" default="false">
</argument> </argument>
<description> <description>
Connects to the given URL requesting one of the given [code]protocols[/code] as sub-protocol. Connects to the given URL requesting one of the given [code]protocols[/code] as sub-protocol. If the list empty (default), no sub-protocol will be requested.
If [code]true[/code] is passed as [code]gd_mp_api[/code], the client will behave like a network peer for the [MultiplayerAPI], connections to non-Godot servers will not work, and [signal data_received] will not be emitted. If [code]true[/code] is passed as [code]gd_mp_api[/code], the client will behave like a network peer for the [MultiplayerAPI], connections to non-Godot servers will not work, and [signal data_received] will not be emitted.
If [code]false[/code] is passed instead (default), you must call [PacketPeer] functions ([code]put_packet[/code], [code]get_packet[/code], etc.) on the [WebSocketPeer] returned via [code]get_peer(1)[/code] and not on this object directly (e.g. [code]get_peer(1).put_packet(data)[/code]). If [code]false[/code] is passed instead (default), you must call [PacketPeer] functions ([code]put_packet[/code], [code]get_packet[/code], etc.) on the [WebSocketPeer] returned via [code]get_peer(1)[/code] and not on this object directly (e.g. [code]get_peer(1).put_packet(data)[/code]).
</description> </description>

2
modules/websocket/doc_classes/WebSocketServer.xml
View File

@ -69,7 +69,7 @@
</argument> </argument>
<description> <description>
Starts listening on the given port. Starts listening on the given port.
You can specify the desired subprotocols via the "protocols" array. If the list empty (default), "binary" will be used. You can specify the desired subprotocols via the "protocols" array. If the list empty (default), no sub-protocol will be requested.
If [code]true[/code] is passed as [code]gd_mp_api[/code], the server will behave like a network peer for the [MultiplayerAPI], connections from non-Godot clients will not work, and [signal data_received] will not be emitted. If [code]true[/code] is passed as [code]gd_mp_api[/code], the server will behave like a network peer for the [MultiplayerAPI], connections from non-Godot clients will not work, and [signal data_received] will not be emitted.
If [code]false[/code] is passed instead (default), you must call [PacketPeer] functions ([code]put_packet[/code], [code]get_packet[/code], etc.), on the [WebSocketPeer] returned via [code]get_peer(id)[/code] to communicate with the peer with given [code]id[/code] (e.g. [code]get_peer(id).get_available_packet_count[/code]). If [code]false[/code] is passed instead (default), you must call [PacketPeer] functions ([code]put_packet[/code], [code]get_packet[/code], etc.), on the [WebSocketPeer] returned via [code]get_peer(id)[/code] to communicate with the peer with given [code]id[/code] (e.g. [code]get_peer(id).get_available_packet_count[/code]).
</description> </description>

4
modules/websocket/register_types.cpp
View File

@ -40,6 +40,8 @@
#include "lws_client.h" #include "lws_client.h"
#include "lws_peer.h" #include "lws_peer.h"
#include "lws_server.h" #include "lws_server.h"
#include "wsl_client.h"
#include "wsl_server.h"
#endif #endif
void register_websocket_types() { void register_websocket_types() {
@ -67,6 +69,8 @@ void register_websocket_types() {
LWSPeer::make_default(); LWSPeer::make_default();
LWSClient::make_default(); LWSClient::make_default();
LWSServer::make_default(); LWSServer::make_default();
WSLClient::make_default();
WSLServer::make_default();
#endif #endif
ClassDB::register_virtual_class<WebSocketMultiplayerPeer>(); ClassDB::register_virtual_class<WebSocketMultiplayerPeer>();

356
modules/websocket/wsl_client.cpp Normal file
View File

@ -0,0 +1,356 @@
/*************************************************************************/
/* wsl_client.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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. */
/*************************************************************************/
#ifndef JAVASCRIPT_ENABLED
#include "wsl_client.h"
#include "core/io/ip.h"
#include "core/project_settings.h"
void WSLClient::_do_handshake() {
if (_requested < _request.size() - 1) {
int sent = 0;
Error err = _connection->put_partial_data(((const uint8_t *)_request.get_data() + _requested), _request.size() - _requested - 1, sent);
// Sending handshake failed
if (err != OK) {
disconnect_from_host();
_on_error();
return;
}
_requested += sent;
} else {
uint8_t byte = 0;
int read = 0;
while (true) {
Error err = _connection->get_partial_data(&byte, 1, read);
if (err == ERR_FILE_EOF) {
// We got a disconnect.
disconnect_from_host();
_on_error();
return;
} else if (err != OK) {
// Got some error.
disconnect_from_host();
_on_error();
return;
} else if (read != 1) {
// Busy, wait next poll.
break;
}
// TODO lots of allocs. Use a buffer.
_response += byte;
if (_response.size() > WSL_MAX_HEADER_SIZE) {
// Header is too big
disconnect_from_host();
_on_error();
ERR_EXPLAIN("Response headers too big");
ERR_FAIL();
}
if (_response.ends_with("\r\n\r\n")) {
String protocol;
// Response is over, verify headers and create peer.
if (!_verify_headers(protocol)) {
disconnect_from_host();
_on_error();
ERR_EXPLAIN("Invalid response headers");
ERR_FAIL();
}
// Create peer.
WSLPeer::PeerData *data = memnew(struct WSLPeer::PeerData);
data->obj = this;
data->conn = _connection;
data->is_server = false;
data->id = 1;
_peer->make_context(data, _in_buf_size, _in_pkt_size, _out_buf_size, _out_pkt_size);
_on_connect(protocol);
}
}
}
}
bool WSLClient::_verify_headers(String &r_protocol) {
Vector<String> psa = _response.trim_suffix("\r\n\r\n").split("\r\n");
int len = psa.size();
if (len < 4) {
ERR_EXPLAIN("Not enough response headers.");
ERR_FAIL_V(false);
}
Vector<String> req = psa[0].split(" ", false);
if (req.size() < 2) {
ERR_EXPLAIN("Invalid protocol or status code.");
ERR_FAIL_V(false);
}
// Wrong protocol
if (req[0] != "HTTP/1.1" || req[1] != "101") {
ERR_EXPLAIN("Invalid protocol or status code.");
ERR_FAIL_V(false);
}
Map<String, String> headers;
for (int i = 1; i < len; i++) {
Vector<String> header = psa[i].split(":", false, 1);
if (header.size() != 2) {
ERR_EXPLAIN("Invalid header -> " + psa[i]);
ERR_FAIL_V(false);
}
String name = header[0].to_lower();
String value = header[1].strip_edges();
if (headers.has(name))
headers[name] += "," + value;
else
headers[name] = value;
}
#define _WLS_EXPLAIN(NAME, VALUE) \
ERR_EXPLAIN("Missing or invalid header '" + String(NAME) + "'. Expected value '" + VALUE + "'");
#define _WLS_CHECK(NAME, VALUE) \
_WLS_EXPLAIN(NAME, VALUE); \
ERR_FAIL_COND_V(!headers.has(NAME) || headers[NAME].to_lower() != VALUE, false);
#define _WLS_CHECK_NC(NAME, VALUE) \
_WLS_EXPLAIN(NAME, VALUE); \
ERR_FAIL_COND_V(!headers.has(NAME) || headers[NAME] != VALUE, false);
_WLS_CHECK("connection", "upgrade");
_WLS_CHECK("upgrade", "websocket");
_WLS_CHECK_NC("sec-websocket-accept", WSLPeer::compute_key_response(_key));
if (_protocols.size() == 0) {
// We didn't request a custom protocol
ERR_FAIL_COND_V(headers.has("sec-websocket-protocol"), false);
} else {
ERR_FAIL_COND_V(!headers.has("sec-websocket-protocol"), false);
r_protocol = headers["sec-websocket-protocol"];
bool valid = false;
for (int i = 0; i < _protocols.size(); i++) {
if (_protocols[i] != r_protocol)
continue;
valid = true;
break;
}
if (!valid)
return false;
}
#undef _WLS_CHECK_NC
#undef _WLS_CHECK
#undef _WLS_EXPLAIN
return true;
}
Error WSLClient::connect_to_host(String p_host, String p_path, uint16_t p_port, bool p_ssl, PoolVector<String> p_protocols) {
ERR_FAIL_COND_V(_connection.is_valid(), ERR_ALREADY_IN_USE);
_peer = Ref<WSLPeer>(memnew(WSLPeer));
IP_Address addr;
if (!p_host.is_valid_ip_address()) {
addr = IP::get_singleton()->resolve_hostname(p_host);
} else {
addr = p_host;
}
ERR_FAIL_COND_V(!addr.is_valid(), ERR_INVALID_PARAMETER);
String port = "";
if ((p_port != 80 && !p_ssl) || (p_port != 443 && p_ssl)) {
port = ":" + itos(p_port);
}
Error err = _tcp->connect_to_host(addr, p_port);
if (err != OK) {
_on_error();
_tcp->disconnect_from_host();
return err;
}
_connection = _tcp;
_use_ssl = p_ssl;
_host = p_host;
_protocols = p_protocols;
_key = WSLPeer::generate_key();
// TODO custom extra headers (allow overriding this too?)
String request = "GET " + p_path + " HTTP/1.1\r\n";
request += "Host: " + p_host + port + "\r\n";
request += "Upgrade: websocket\r\n";
request += "Connection: Upgrade\r\n";
request += "Sec-WebSocket-Key: " + _key + "\r\n";
request += "Sec-WebSocket-Version: 13\r\n";
if (p_protocols.size() > 0) {
request += "Sec-WebSocket-Protocol: ";
for (int i = 0; i < p_protocols.size(); i++) {
if (i != 0)
request += ",";
request += p_protocols[i];
}
request += "\r\n";
}
request += "\r\n";
_request = request.utf8();
return OK;
}
int WSLClient::get_max_packet_size() const {
return (1 << _out_buf_size) - PROTO_SIZE;
}
void WSLClient::poll() {
if (_peer->is_connected_to_host()) {
_peer->poll();
if (!_peer->is_connected_to_host()) {
_on_disconnect(_peer->close_code != -1);
disconnect_from_host();
}
return;
}
if (_connection.is_null())
return; // Not connected.
switch (_tcp->get_status()) {
case StreamPeerTCP::STATUS_NONE:
// Clean close
_on_error();
disconnect_from_host();
break;
case StreamPeerTCP::STATUS_CONNECTED: {
Ref<StreamPeerSSL> ssl;
if (_use_ssl) {
if (_connection == _tcp) {
// Start SSL handshake
ssl = Ref<StreamPeerSSL>(StreamPeerSSL::create());
ERR_EXPLAIN("SSL is not available in this build");
ERR_FAIL_COND(ssl.is_null());
ssl->set_blocking_handshake_enabled(false);
if (ssl->connect_to_stream(_tcp, verify_ssl, _host) != OK) {
_on_error();
disconnect_from_host();
return;
}
_connection = ssl;
} else {
ssl = static_cast<Ref<StreamPeerSSL> >(_connection);
ERR_FAIL_COND(ssl.is_null()); // Bug?
ssl->poll();
}
if (ssl->get_status() == StreamPeerSSL::STATUS_HANDSHAKING)
return; // Need more polling.
else if (ssl->get_status() != StreamPeerSSL::STATUS_CONNECTED) {
_on_error();
disconnect_from_host();
return; // Error.
}
}
// Do websocket handshake.
_do_handshake();
} break;
case StreamPeerTCP::STATUS_ERROR:
_on_error();
disconnect_from_host();
break;
case StreamPeerTCP::STATUS_CONNECTING:
break; // Wait for connection
}
}
Ref<WebSocketPeer> WSLClient::get_peer(int p_peer_id) const {
ERR_FAIL_COND_V(p_peer_id != 1, NULL);
return _peer;
}
NetworkedMultiplayerPeer::ConnectionStatus WSLClient::get_connection_status() const {
if (_peer->is_connected_to_host())
return CONNECTION_CONNECTED;
if (_tcp->is_connected_to_host())
return CONNECTION_CONNECTING;
return CONNECTION_DISCONNECTED;
}
void WSLClient::disconnect_from_host(int p_code, String p_reason) {
_peer->close(p_code, p_reason);
_connection = Ref<StreamPeer>(NULL);
_tcp = Ref<StreamPeerTCP>(memnew(StreamPeerTCP));
_request = "";
_response = "";
_key = "";
_host = "";
_use_ssl = false;
_requested = 0;
}
IP_Address WSLClient::get_connected_host() const {
return IP_Address();
}
uint16_t WSLClient::get_connected_port() const {
return 1025;
}
Error WSLClient::set_buffers(int p_in_buffer, int p_in_packets, int p_out_buffer, int p_out_packets) {
ERR_EXPLAIN("Buffers sizes can only be set before listening or connecting");
ERR_FAIL_COND_V(_ctx != NULL, FAILED);
_in_buf_size = nearest_shift(p_in_buffer - 1) + 10;
_in_pkt_size = nearest_shift(p_in_packets - 1);
_out_buf_size = nearest_shift(p_out_buffer - 1) + 10;
_out_pkt_size = nearest_shift(p_out_packets - 1);
return OK;
}
WSLClient::WSLClient() {
_in_buf_size = nearest_shift((int)GLOBAL_GET(WSC_IN_BUF) - 1) + 10;
_in_pkt_size = nearest_shift((int)GLOBAL_GET(WSC_IN_PKT) - 1);
_out_buf_size = nearest_shift((int)GLOBAL_GET(WSC_OUT_BUF) - 1) + 10;
_out_pkt_size = nearest_shift((int)GLOBAL_GET(WSC_OUT_PKT) - 1);
_ctx = NULL;
_peer.instance();
_tcp.instance();
_requested = 0;
}
WSLClient::~WSLClient() {
_peer->close_now();
_peer->invalidate();
disconnect_from_host();
}
#endif // JAVASCRIPT_ENABLED

85
modules/websocket/wsl_client.h Normal file
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@ -0,0 +1,85 @@
/*************************************************************************/
/* wsl_client.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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. */
/*************************************************************************/
#ifndef WSLCLIENT_H
#define WSLCLIENT_H
#ifndef JAVASCRIPT_ENABLED
#include "core/error_list.h"
#include "core/io/stream_peer_ssl.h"
#include "core/io/stream_peer_tcp.h"
#include "websocket_client.h"
#include "wsl_peer.h"
#include "wslay/wslay.h"
class WSLClient : public WebSocketClient {
GDCIIMPL(WSLClient, WebSocketClient);
private:
int _in_buf_size;
int _in_pkt_size;
int _out_buf_size;
int _out_pkt_size;
wslay_event_context_ptr _ctx;
Ref<WSLPeer> _peer;
// XXX we could use HTTPClient with some hacking instead...
Ref<StreamPeerTCP> _tcp;
CharString _request;
String _response;
String _key;
String _host;
PoolVector<String> _protocols;
Ref<StreamPeer> _connection;
int _requested;
bool _use_ssl;
void _do_handshake();
bool _verify_headers(String &r_protocol);
public:
Error set_buffers(int p_in_buffer, int p_in_packets, int p_out_buffer, int p_out_packets);
Error connect_to_host(String p_host, String p_path, uint16_t p_port, bool p_ssl, PoolVector<String> p_protocol = PoolVector<String>());
int get_max_packet_size() const;
Ref<WebSocketPeer> get_peer(int p_peer_id) const;
void disconnect_from_host(int p_code = 1000, String p_reason = "");
IP_Address get_connected_host() const;
uint16_t get_connected_port() const;
virtual ConnectionStatus get_connection_status() const;
virtual void poll();
WSLClient();
~WSLClient();
};
#endif // JAVASCRIPT_ENABLED
#endif // WSLCLIENT_H

339
modules/websocket/wsl_peer.cpp Normal file
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@ -0,0 +1,339 @@
/*************************************************************************/
/* lws_peer.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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. */
/*************************************************************************/
#ifndef JAVASCRIPT_ENABLED
#include "wsl_peer.h"
#include "wsl_client.h"
#include "wsl_server.h"
#include "core/math/crypto_core.h"
#include "core/math/random_number_generator.h"
#include "core/os/os.h"
String WSLPeer::generate_key() {
// Random key
RandomNumberGenerator rng;
rng.set_seed(OS::get_singleton()->get_unix_time());
PoolVector<uint8_t> bkey;
int len = 16; // 16 bytes, as per RFC
bkey.resize(len);
PoolVector<uint8_t>::Write w = bkey.write();
for (int i = 0; i < len; i++) {
w[i] = (uint8_t)rng.randi_range(0, 255);
}
return CryptoCore::b64_encode_str(&w[0], len);
}
String WSLPeer::compute_key_response(String p_key) {
String key = p_key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"; // Magic UUID as per RFC
Vector<uint8_t> sha = key.sha1_buffer();
return CryptoCore::b64_encode_str(sha.ptr(), sha.size());
}
void WSLPeer::_wsl_destroy(struct PeerData **p_data) {
if (!p_data || !(*p_data))
return;
struct PeerData *data = *p_data;
if (data->polling) {
data->destroy = true;
return;
}
wslay_event_context_free(data->ctx);
memdelete(data);
*p_data = NULL;
}
bool WSLPeer::_wsl_poll(struct PeerData *p_data) {
p_data->polling = true;
int err = 0;
if ((err = wslay_event_recv(p_data->ctx)) != 0 || (err = wslay_event_send(p_data->ctx)) != 0) {
print_verbose("Websocket (wslay) poll error: " + itos(err));
p_data->destroy = true;
}
p_data->polling = false;
if (p_data->destroy || (wslay_event_get_close_sent(p_data->ctx) && wslay_event_get_close_received(p_data->ctx))) {
bool valid = p_data->valid;
_wsl_destroy(&p_data);
return valid;
}
return false;
}
ssize_t wsl_recv_callback(wslay_event_context_ptr ctx, uint8_t *data, size_t len, int flags, void *user_data) {
struct WSLPeer::PeerData *peer_data = (struct WSLPeer::PeerData *)user_data;
if (!peer_data->valid) {
wslay_event_set_error(ctx, WSLAY_ERR_CALLBACK_FAILURE);
return -1;
}
Ref<StreamPeer> conn = peer_data->conn;
int read = 0;
Error err = conn->get_partial_data(data, len, read);
if (err != OK) {
print_verbose("Websocket get data error: " + itos(err) + ", read (should be 0!): " + itos(read));
wslay_event_set_error(ctx, WSLAY_ERR_CALLBACK_FAILURE);
return -1;
}
if (read == 0) {
wslay_event_set_error(ctx, WSLAY_ERR_WOULDBLOCK);
return -1;
}
return read;
}
ssize_t wsl_send_callback(wslay_event_context_ptr ctx, const uint8_t *data, size_t len, int flags, void *user_data) {
struct WSLPeer::PeerData *peer_data = (struct WSLPeer::PeerData *)user_data;
if (!peer_data->valid) {
wslay_event_set_error(ctx, WSLAY_ERR_CALLBACK_FAILURE);
return -1;
}
Ref<StreamPeer> conn = peer_data->conn;
int sent = 0;
Error err = conn->put_partial_data(data, len, sent);
if (err != OK) {
wslay_event_set_error(ctx, WSLAY_ERR_CALLBACK_FAILURE);
return -1;
}
if (sent == 0) {
wslay_event_set_error(ctx, WSLAY_ERR_WOULDBLOCK);
return -1;
}
return sent;
}
int wsl_genmask_callback(wslay_event_context_ptr ctx, uint8_t *buf, size_t len, void *user_data) {
RandomNumberGenerator rng;
// TODO maybe use crypto in the future?
rng.set_seed(OS::get_singleton()->get_unix_time());
for (unsigned int i = 0; i < len; i++) {
buf[i] = (uint8_t)rng.randi_range(0, 255);
}
return 0;
}
void wsl_msg_recv_callback(wslay_event_context_ptr ctx, const struct wslay_event_on_msg_recv_arg *arg, void *user_data) {
struct WSLPeer::PeerData *peer_data = (struct WSLPeer::PeerData *)user_data;
if (!peer_data->valid) {
return;
}
WSLPeer *peer = (WSLPeer *)peer_data->peer;
if (peer->parse_message(arg) != OK)
return;
if (peer_data->is_server) {
WSLServer *helper = (WSLServer *)peer_data->obj;
helper->_on_peer_packet(peer_data->id);
} else {
WSLClient *helper = (WSLClient *)peer_data->obj;
helper->_on_peer_packet();
}
}
wslay_event_callbacks wsl_callbacks = {
wsl_recv_callback,
wsl_send_callback,
wsl_genmask_callback,
NULL, /* on_frame_recv_start_callback */
NULL, /* on_frame_recv_callback */
NULL, /* on_frame_recv_end_callback */
wsl_msg_recv_callback
};
Error WSLPeer::parse_message(const wslay_event_on_msg_recv_arg *arg) {
uint8_t is_string = 0;
if (arg->opcode == WSLAY_TEXT_FRAME) {
is_string = 1;
} else if (arg->opcode == WSLAY_CONNECTION_CLOSE) {
close_code = arg->status_code;
size_t len = arg->msg_length;
close_reason = "";
if (len > 2 /* first 2 bytes = close code */) {
close_reason.parse_utf8((char *)arg->msg + 2, len - 2);
}
if (!wslay_event_get_close_sent(_data->ctx)) {
if (_data->is_server) {
WSLServer *helper = (WSLServer *)_data->obj;
helper->_on_close_request(_data->id, close_code, close_reason);
} else {
WSLClient *helper = (WSLClient *)_data->obj;
helper->_on_close_request(close_code, close_reason);
}
}
return ERR_FILE_EOF;
} else if (arg->opcode != WSLAY_BINARY_FRAME) {
// Ping or pong
return ERR_SKIP;
}
_in_buffer.write_packet(arg->msg, arg->msg_length, &is_string);
return OK;
}
void WSLPeer::make_context(PeerData *p_data, unsigned int p_in_buf_size, unsigned int p_in_pkt_size, unsigned int p_out_buf_size, unsigned int p_out_pkt_size) {
ERR_FAIL_COND(_data != NULL);
ERR_FAIL_COND(p_data == NULL);
_in_buffer.resize(p_in_pkt_size, p_in_buf_size);
_packet_buffer.resize((1 << MAX(p_in_buf_size, p_out_buf_size)));
_data = p_data;
_data->peer = this;
_data->valid = true;
_connection = Ref<StreamPeer>(_data->conn);
if (_data->is_server)
wslay_event_context_server_init(&(_data->ctx), &wsl_callbacks, _data);
else
wslay_event_context_client_init(&(_data->ctx), &wsl_callbacks, _data);
wslay_event_config_set_max_recv_msg_length(_data->ctx, (1 << p_in_buf_size));
}
void WSLPeer::set_write_mode(WriteMode p_mode) {
write_mode = p_mode;
}
WSLPeer::WriteMode WSLPeer::get_write_mode() const {
return write_mode;
}
void WSLPeer::poll() {
if (!_data)
return;
if (_wsl_poll(_data)) {
_data = NULL;
}
}
Error WSLPeer::put_packet(const uint8_t *p_buffer, int p_buffer_size) {
ERR_FAIL_COND_V(!is_connected_to_host(), FAILED);
struct wslay_event_msg msg; // Should I use fragmented?
msg.opcode = write_mode == WRITE_MODE_TEXT ? WSLAY_TEXT_FRAME : WSLAY_BINARY_FRAME;
msg.msg = p_buffer;
msg.msg_length = p_buffer_size;
wslay_event_queue_msg(_data->ctx, &msg);
return OK;
}
Error WSLPeer::get_packet(const uint8_t **r_buffer, int &r_buffer_size) {
r_buffer_size = 0;
ERR_FAIL_COND_V(!is_connected_to_host(), FAILED);
if (_in_buffer.packets_left() == 0)
return ERR_UNAVAILABLE;
int read = 0;
PoolVector<uint8_t>::Write rw = _packet_buffer.write();
_in_buffer.read_packet(rw.ptr(), _packet_buffer.size(), &_is_string, read);
*r_buffer = rw.ptr();
r_buffer_size = read;
return OK;
}
int WSLPeer::get_available_packet_count() const {
if (!is_connected_to_host())
return 0;
return _in_buffer.packets_left();
}
bool WSLPeer::was_string_packet() const {
return _is_string;
}
bool WSLPeer::is_connected_to_host() const {
return _data != NULL;
}
void WSLPeer::close_now() {
close(1000, "");
_wsl_destroy(&_data);
}
void WSLPeer::close(int p_code, String p_reason) {
if (_data && !wslay_event_get_close_sent(_data->ctx)) {
CharString cs = p_reason.utf8();
wslay_event_queue_close(_data->ctx, p_code, (uint8_t *)cs.ptr(), cs.size());
wslay_event_send(_data->ctx);
}
_in_buffer.clear();
_packet_buffer.resize(0);
}
IP_Address WSLPeer::get_connected_host() const {
ERR_FAIL_COND_V(!is_connected_to_host(), IP_Address());
IP_Address ip;
return ip;
}
uint16_t WSLPeer::get_connected_port() const {
ERR_FAIL_COND_V(!is_connected_to_host(), 0);
uint16_t port = 0;
return port;
}
void WSLPeer::invalidate() {
if (_data)
_data->valid = false;
}
WSLPeer::WSLPeer() {
_data = NULL;
_is_string = 0;
close_code = -1;
write_mode = WRITE_MODE_BINARY;
}
WSLPeer::~WSLPeer() {
close();
invalidate();
_wsl_destroy(&_data);
_data = NULL;
}
#endif // JAVASCRIPT_ENABLED

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/*************************************************************************/
/* wsl_peer.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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. */
/*************************************************************************/
#ifndef WSLPEER_H
#define WSLPEER_H
#ifndef JAVASCRIPT_ENABLED
#include "core/error_list.h"
#include "core/io/packet_peer.h"
#include "core/ring_buffer.h"
#include "packet_buffer.h"
#include "websocket_peer.h"
#include "wslay/wslay.h"
#define WSL_MAX_HEADER_SIZE 4096
class WSLPeer : public WebSocketPeer {
GDCIIMPL(WSLPeer, WebSocketPeer);
public:
struct PeerData {
bool polling;
bool destroy;
bool valid;
bool is_server;
void *obj;
void *peer;
Ref<StreamPeer> conn;
int id;
wslay_event_context_ptr ctx;
PeerData() {
polling = false;
destroy = false;
valid = false;
is_server = false;
id = 1;
ctx = NULL;
obj = NULL;
peer = NULL;
}
};
static String compute_key_response(String p_key);
static String generate_key();
private:
static bool _wsl_poll(struct PeerData *p_data);
static void _wsl_destroy(struct PeerData **p_data);
Ref<StreamPeer> _connection;
struct PeerData *_data;
uint8_t _is_string;
// Our packet info is just a boolean (is_string), using uint8_t for it.
PacketBuffer<uint8_t> _in_buffer;
PoolVector<uint8_t> _packet_buffer;
WriteMode write_mode;
public:
int close_code;
String close_reason;
void poll(); // Used by client and server.
virtual int get_available_packet_count() const;
virtual Error get_packet(const uint8_t **r_buffer, int &r_buffer_size);
virtual Error put_packet(const uint8_t *p_buffer, int p_buffer_size);
virtual int get_max_packet_size() const { return _packet_buffer.size(); };
virtual void close_now();
virtual void close(int p_code = 1000, String p_reason = "");
virtual bool is_connected_to_host() const;
virtual IP_Address get_connected_host() const;
virtual uint16_t get_connected_port() const;
virtual WriteMode get_write_mode() const;
virtual void set_write_mode(WriteMode p_mode);
virtual bool was_string_packet() const;
void make_context(PeerData *p_data, unsigned int p_in_buf_size, unsigned int p_in_pkt_size, unsigned int p_out_buf_size, unsigned int p_out_pkt_size);
Error parse_message(const wslay_event_on_msg_recv_arg *arg);
void invalidate();
WSLPeer();
~WSLPeer();
};
#endif // JAVASCRIPT_ENABLED
#endif // LSWPEER_H

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/*************************************************************************/
/* lws_server.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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. */
/*************************************************************************/
#ifndef JAVASCRIPT_ENABLED
#include "wsl_server.h"
#include "core/os/os.h"
#include "core/project_settings.h"
bool WSLServer::PendingPeer::_parse_request(String &r_key) {
Vector<String> psa = request.trim_suffix("\r\n\r\n").split("\r\n");
int len = psa.size();
if (len < 4) {
ERR_EXPLAIN("Not enough response headers.");
ERR_FAIL_V(false);
}
Vector<String> req = psa[0].split(" ", false);
if (req.size() < 2) {
ERR_EXPLAIN("Invalid protocol or status code.");
ERR_FAIL_V(false);
}
// Wrong protocol
if (req[0] != "GET" || req[2] != "HTTP/1.1") {
ERR_EXPLAIN("Invalid method or HTTP version.");
ERR_FAIL_V(false);
}
Map<String, String> headers;
for (int i = 1; i < len; i++) {
Vector<String> header = psa[i].split(":", false, 1);
if (header.size() != 2) {
ERR_EXPLAIN("Invalid header -> " + psa[i]);
ERR_FAIL_V(false);
}
String name = header[0].to_lower();
String value = header[1].strip_edges();
if (headers.has(name))
headers[name] += "," + value;
else
headers[name] = value;
}
#define _WLS_CHECK(NAME, VALUE) \
ERR_EXPLAIN("Missing or invalid header '" + String(NAME) + "'. Expected value '" + VALUE + "'"); \
ERR_FAIL_COND_V(!headers.has(NAME) || headers[NAME].to_lower() != VALUE, false);
#define _WLS_CHECK_EX(NAME) \
ERR_EXPLAIN("Missing header '" + String(NAME) + "'."); \
ERR_FAIL_COND_V(!headers.has(NAME), false);
_WLS_CHECK("upgrade", "websocket");
_WLS_CHECK("sec-websocket-version", "13");
_WLS_CHECK_EX("sec-websocket-key");
_WLS_CHECK_EX("connection");
#undef _WLS_CHECK_EX
#undef _WLS_CHECK
r_key = headers["sec-websocket-key"];
return true;
}
Error WSLServer::PendingPeer::do_handshake() {
if (OS::get_singleton()->get_ticks_msec() - time > WSL_SERVER_TIMEOUT)
return ERR_TIMEOUT;
if (!has_request) {
uint8_t byte = 0;
int read = 0;
while (true) {
Error err = connection->get_partial_data(&byte, 1, read);
if (err != OK) // Got an error
return FAILED;
else if (read != 1) // Busy, wait next poll
return ERR_BUSY;
request += byte;
if (request.size() > WSL_MAX_HEADER_SIZE) {
ERR_EXPLAIN("Response headers too big");
ERR_FAIL_V(ERR_OUT_OF_MEMORY);
}
if (request.ends_with("\r\n\r\n")) {
if (!_parse_request(key)) {
return FAILED;
}
String r = "HTTP/1.1 101 Switching Protocols\r\n";
r += "Upgrade: websocket\r\n";
r += "Connection: Upgrade\r\n";
r += "Sec-WebSocket-Accept: " + WSLPeer::compute_key_response(key) + "\r\n";
r += "\r\n";
response = r.utf8();
has_request = true;
WARN_PRINTS("Parsed, " + key);
break;
}
}
}
if (has_request && response_sent < response.size() - 1) {
int sent = 0;
Error err = connection->put_partial_data((const uint8_t *)response.get_data() + response_sent, response.size() - response_sent - 1, sent);
if (err != OK) {
return err;
}
response_sent += sent;
}
if (response_sent < response.size() - 1)
return ERR_BUSY;
return OK;
}
Error WSLServer::listen(int p_port, PoolVector<String> p_protocols, bool gd_mp_api) {
ERR_FAIL_COND_V(is_listening(), ERR_ALREADY_IN_USE);
_is_multiplayer = gd_mp_api;
_server->listen(p_port);
return OK;
}
void WSLServer::poll() {
List<int> remove_ids;
for (Map<int, Ref<WebSocketPeer> >::Element *E = _peer_map.front(); E; E = E->next()) {
Ref<WSLPeer> peer = (WSLPeer *)E->get().ptr();
peer->poll();
if (!peer->is_connected_to_host()) {
_on_disconnect(E->key(), peer->close_code != -1);
remove_ids.push_back(E->key());
}
}
for (List<int>::Element *E = remove_ids.front(); E; E = E->next()) {
_peer_map.erase(E->get());
}
remove_ids.clear();
List<Ref<PendingPeer> > remove_peers;
for (List<Ref<PendingPeer> >::Element *E = _pending.front(); E; E = E->next()) {
Ref<PendingPeer> ppeer = E->get();
Error err = ppeer->do_handshake();
if (err == ERR_BUSY) {
continue;
} else if (err != OK) {
remove_peers.push_back(ppeer);
continue;
}
// Creating new peer
int32_t id = _gen_unique_id();
WSLPeer::PeerData *data = memnew(struct WSLPeer::PeerData);
data->obj = this;
data->conn = ppeer->connection;
data->is_server = true;
data->id = id;
Ref<WSLPeer> ws_peer = memnew(WSLPeer);
ws_peer->make_context(data, _in_buf_size, _in_pkt_size, _out_buf_size, _out_pkt_size);
_peer_map[id] = ws_peer;
remove_peers.push_back(ppeer);
_on_connect(id, "");
}
for (List<Ref<PendingPeer> >::Element *E = remove_peers.front(); E; E = E->next()) {
_pending.erase(E->get());
}
remove_peers.clear();
if (!_server->is_listening())
return;
while (_server->is_connection_available()) {
Ref<StreamPeer> conn = _server->take_connection();
if (is_refusing_new_connections())
continue; // Conn will go out-of-scope and be closed.
Ref<PendingPeer> peer = memnew(PendingPeer);
peer->connection = conn;
peer->time = OS::get_singleton()->get_ticks_msec();
_pending.push_back(peer);
}
}
bool WSLServer::is_listening() const {
return _server->is_listening();
}
int WSLServer::get_max_packet_size() const {
return (1 << _out_buf_size) - PROTO_SIZE;
}
void WSLServer::stop() {
_server->stop();
for (Map<int, Ref<WebSocketPeer> >::Element *E = _peer_map.front(); E; E = E->next()) {
Ref<WSLPeer> peer = (WSLPeer *)E->get().ptr();
peer->close_now();
}
_pending.clear();
_peer_map.clear();
}
bool WSLServer::has_peer(int p_id) const {
return _peer_map.has(p_id);
}
Ref<WebSocketPeer> WSLServer::get_peer(int p_id) const {
ERR_FAIL_COND_V(!has_peer(p_id), NULL);
return _peer_map[p_id];
}
IP_Address WSLServer::get_peer_address(int p_peer_id) const {
ERR_FAIL_COND_V(!has_peer(p_peer_id), IP_Address());
return _peer_map[p_peer_id]->get_connected_host();
}
int WSLServer::get_peer_port(int p_peer_id) const {
ERR_FAIL_COND_V(!has_peer(p_peer_id), 0);
return _peer_map[p_peer_id]->get_connected_port();
}
void WSLServer::disconnect_peer(int p_peer_id, int p_code, String p_reason) {
ERR_FAIL_COND(!has_peer(p_peer_id));
get_peer(p_peer_id)->close(p_code, p_reason);
}
Error WSLServer::set_buffers(int p_in_buffer, int p_in_packets, int p_out_buffer, int p_out_packets) {
ERR_EXPLAIN("Buffers sizes can only be set before listening or connecting");
ERR_FAIL_COND_V(_server->is_listening(), FAILED);
_in_buf_size = nearest_shift(p_in_buffer - 1) + 10;
_in_pkt_size = nearest_shift(p_in_packets - 1);
_out_buf_size = nearest_shift(p_out_buffer - 1) + 10;
_out_pkt_size = nearest_shift(p_out_packets - 1);
return OK;
}
WSLServer::WSLServer() {
_in_buf_size = nearest_shift((int)GLOBAL_GET(WSS_IN_BUF) - 1) + 10;
_in_pkt_size = nearest_shift((int)GLOBAL_GET(WSS_IN_PKT) - 1);
_out_buf_size = nearest_shift((int)GLOBAL_GET(WSS_OUT_BUF) - 1) + 10;
_out_pkt_size = nearest_shift((int)GLOBAL_GET(WSS_OUT_PKT) - 1);
_server.instance();
}
WSLServer::~WSLServer() {
stop();
}
#endif // JAVASCRIPT_ENABLED

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@ -0,0 +1,100 @@
/*************************************************************************/
/* wsl_server.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 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. */
/*************************************************************************/
#ifndef WSLSERVER_H
#define WSLSERVER_H
#ifndef JAVASCRIPT_ENABLED
#include "websocket_server.h"
#include "wsl_peer.h"
#include "core/io/stream_peer_tcp.h"
#include "core/io/tcp_server.h"
#define WSL_SERVER_TIMEOUT 1000
class WSLServer : public WebSocketServer {
GDCIIMPL(WSLServer, WebSocketServer);
private:
class PendingPeer : public Reference {
private:
bool _parse_request(String &r_key);
public:
Ref<StreamPeer> connection;
int time;
String request;
String key;
bool has_request;
CharString response;
int response_sent;
PendingPeer() {
time = 0;
has_request = false;
response_sent = 0;
}
Error do_handshake();
};
int _in_buf_size;
int _in_pkt_size;
int _out_buf_size;
int _out_pkt_size;
List<Ref<PendingPeer> > _pending;
Ref<TCP_Server> _server;
public:
Error set_buffers(int p_in_buffer, int p_in_packets, int p_out_buffer, int p_out_packets);
Error listen(int p_port, PoolVector<String> p_protocols = PoolVector<String>(), bool gd_mp_api = false);
void stop();
bool is_listening() const;
int get_max_packet_size() const;
bool has_peer(int p_id) const;
Ref<WebSocketPeer> get_peer(int p_id) const;
IP_Address get_peer_address(int p_peer_id) const;
int get_peer_port(int p_peer_id) const;
void disconnect_peer(int p_peer_id, int p_code = 1000, String p_reason = "");
virtual void poll();
WSLServer();
~WSLServer();
};
#endif // JAVASCRIPT_ENABLED
#endif // WSLSERVER_H

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thirdparty/README.md vendored
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@ -262,6 +262,13 @@ changes to ensure they build for Javascript/HTML5. Those
changes are marked with `// -- GODOT --` comments. changes are marked with `// -- GODOT --` comments.
## wslay
- Upstream: https://github.com/tatsuhiro-t/wslay
- Version: 1.1.0
- License: MIT
## libwebsockets ## libwebsockets
- Upstream: https://github.com/warmcat/libwebsockets - Upstream: https://github.com/warmcat/libwebsockets

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thirdparty/wslay/COPYING vendored Normal file
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The MIT License
Copyright (c) 2011, 2012, 2015 Tatsuhiro Tsujikawa
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.

8
thirdparty/wslay/includes/config.h vendored Normal file
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#ifndef CONFIG_H
#define CONFIG_H
#ifdef BIG_ENDIAN_ENABLED
#define WORDS_BIGENDIAN
#endif
#endif /* CONFIG_H */

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thirdparty/wslay/includes/wslay/wslay.h vendored Normal file
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/*
* Wslay - The WebSocket Library
*
* Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
*
* 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.
*/
#ifndef WSLAY_H
#define WSLAY_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
#include <stdlib.h>
#include <sys/types.h>
/*
* wslay/wslayver.h is generated from wslay/wslayver.h.in by
* configure. The projects which do not use autotools can set
* WSLAY_VERSION macro from outside to avoid to generating wslayver.h
*/
#ifndef WSLAY_VERSION
# include <wslay/wslayver.h>
#endif /* WSLAY_VERSION */
enum wslay_error {
WSLAY_ERR_WANT_READ = -100,
WSLAY_ERR_WANT_WRITE = -101,
WSLAY_ERR_PROTO = -200,
WSLAY_ERR_INVALID_ARGUMENT = -300,
WSLAY_ERR_INVALID_CALLBACK = -301,
WSLAY_ERR_NO_MORE_MSG = -302,
WSLAY_ERR_CALLBACK_FAILURE = -400,
WSLAY_ERR_WOULDBLOCK = -401,
WSLAY_ERR_NOMEM = -500
};
/*
* Status codes defined in RFC6455
*/
enum wslay_status_code {
WSLAY_CODE_NORMAL_CLOSURE = 1000,
WSLAY_CODE_GOING_AWAY = 1001,
WSLAY_CODE_PROTOCOL_ERROR = 1002,
WSLAY_CODE_UNSUPPORTED_DATA = 1003,
WSLAY_CODE_NO_STATUS_RCVD = 1005,
WSLAY_CODE_ABNORMAL_CLOSURE = 1006,
WSLAY_CODE_INVALID_FRAME_PAYLOAD_DATA = 1007,
WSLAY_CODE_POLICY_VIOLATION = 1008,
WSLAY_CODE_MESSAGE_TOO_BIG = 1009,
WSLAY_CODE_MANDATORY_EXT = 1010,
WSLAY_CODE_INTERNAL_SERVER_ERROR = 1011,
WSLAY_CODE_TLS_HANDSHAKE = 1015
};
enum wslay_io_flags {
/*
* There is more data to send.
*/
WSLAY_MSG_MORE = 1
};
/*
* Callback function used by wslay_frame_send() function when it needs
* to send data. The implementation of this function must send at most
* len bytes of data in data. flags is the bitwise OR of zero or more
* of the following flag:
*
* WSLAY_MSG_MORE
* There is more data to send
*
* It provides some hints to tune performance and behaviour. user_data
* is one given in wslay_frame_context_init() function. The
* implementation of this function must return the number of bytes
* sent. If there is an error, return -1. The return value 0 is also
* treated an error by the library.
*/
typedef ssize_t (*wslay_frame_send_callback)(const uint8_t *data, size_t len,
int flags, void *user_data);
/*
* Callback function used by wslay_frame_recv() function when it needs
* more data. The implementation of this function must fill at most
* len bytes of data into buf. The memory area of buf is allocated by
* library and not be freed by the application code. flags is always 0
* in this version. user_data is one given in
* wslay_frame_context_init() function. The implementation of this
* function must return the number of bytes filled. If there is an
* error, return -1. The return value 0 is also treated an error by
* the library.
*/
typedef ssize_t (*wslay_frame_recv_callback)(uint8_t *buf, size_t len,
int flags, void *user_data);
/*
* Callback function used by wslay_frame_send() function when it needs
* new mask key. The implementation of this function must write
* exactly len bytes of mask key to buf. user_data is one given in
* wslay_frame_context_init() function. The implementation of this
* function return 0 on success. If there is an error, return -1.
*/
typedef int (*wslay_frame_genmask_callback)(uint8_t *buf, size_t len,
void *user_data);
struct wslay_frame_callbacks {
wslay_frame_send_callback send_callback;
wslay_frame_recv_callback recv_callback;
wslay_frame_genmask_callback genmask_callback;
};
/*
* The opcode defined in RFC6455.
*/
enum wslay_opcode {
WSLAY_CONTINUATION_FRAME = 0x0u,
WSLAY_TEXT_FRAME = 0x1u,
WSLAY_BINARY_FRAME = 0x2u,
WSLAY_CONNECTION_CLOSE = 0x8u,
WSLAY_PING = 0x9u,
WSLAY_PONG = 0xau
};
/*
* Macro that returns 1 if opcode is control frame opcode, otherwise
* returns 0.
*/
#define wslay_is_ctrl_frame(opcode) ((opcode >> 3) & 1)
/*
* Macros that represent and return reserved bits: RSV1, RSV2, RSV3.
* These macros assume that rsv is constructed by ((RSV1 << 2) |
* (RSV2 << 1) | RSV3)
*/
#define WSLAY_RSV_NONE ((uint8_t) 0)
#define WSLAY_RSV1_BIT (((uint8_t) 1) << 2)
#define WSLAY_RSV2_BIT (((uint8_t) 1) << 1)
#define WSLAY_RSV3_BIT (((uint8_t) 1) << 0)
#define wslay_get_rsv1(rsv) ((rsv >> 2) & 1)
#define wslay_get_rsv2(rsv) ((rsv >> 1) & 1)
#define wslay_get_rsv3(rsv) (rsv & 1)
struct wslay_frame_iocb {
/* 1 for fragmented final frame, 0 for otherwise */
uint8_t fin;
/*
* reserved 3 bits. rsv = ((RSV1 << 2) | (RSV << 1) | RSV3).
* RFC6455 requires 0 unless extensions are negotiated.
*/
uint8_t rsv;
/* 4 bit opcode */
uint8_t opcode;
/* payload length [0, 2**63-1] */
uint64_t payload_length;
/* 1 for masked frame, 0 for unmasked */
uint8_t mask;
/* part of payload data */
const uint8_t *data;
/* bytes of data defined above */
size_t data_length;
};
struct wslay_frame_context;
typedef struct wslay_frame_context *wslay_frame_context_ptr;
/*
* Initializes ctx using given callbacks and user_data. This function
* allocates memory for struct wslay_frame_context and stores the
* result to *ctx. The callback functions specified in callbacks are
* copied to ctx. user_data is stored in ctx and it will be passed to
* callback functions. When the user code finished using ctx, it must
* call wslay_frame_context_free to deallocate memory.
*/
int wslay_frame_context_init(wslay_frame_context_ptr *ctx,
const struct wslay_frame_callbacks *callbacks,
void *user_data);
/*
* Deallocates memory pointed by ctx.
*/
void wslay_frame_context_free(wslay_frame_context_ptr ctx);
/*
* Send WebSocket frame specified in iocb. ctx must be initialized
* using wslay_frame_context_init() function. iocb->fin must be 1 if
* this is a fin frame, otherwise 0. iocb->rsv is reserved bits.
* iocb->opcode must be the opcode of this frame. iocb->mask must be
* 1 if this is masked frame, otherwise 0. iocb->payload_length is
* the payload_length of this frame. iocb->data must point to the
* payload data to be sent. iocb->data_length must be the length of
* the data. This function calls send_callback function if it needs
* to send bytes. This function calls gen_mask_callback function if
* it needs new mask key. This function returns the number of payload
* bytes sent. Please note that it does not include any number of
* header bytes. If it cannot send any single bytes of payload, it
* returns WSLAY_ERR_WANT_WRITE. If the library detects error in iocb,
* this function returns WSLAY_ERR_INVALID_ARGUMENT. If callback
* functions report a failure, this function returns
* WSLAY_ERR_INVALID_CALLBACK. This function does not always send all
* given data in iocb. If there are remaining data to be sent, adjust
* data and data_length in iocb accordingly and call this function
* again.
*/
ssize_t wslay_frame_send(wslay_frame_context_ptr ctx,
struct wslay_frame_iocb *iocb);
/*
* Receives WebSocket frame and stores it in iocb. This function
* returns the number of payload bytes received. This does not
* include header bytes. In this case, iocb will be populated as
* follows: iocb->fin is 1 if received frame is fin frame, otherwise
* 0. iocb->rsv is reserved bits of received frame. iocb->opcode is
* opcode of received frame. iocb->mask is 1 if received frame is
* masked, otherwise 0. iocb->payload_length is the payload length of
* received frame. iocb->data is pointed to the buffer containing
* received payload data. This buffer is allocated by the library and
* must be read-only. iocb->data_length is the number of payload
* bytes recieved. This function calls recv_callback if it needs to
* receive additional bytes. If it cannot receive any single bytes of
* payload, it returns WSLAY_ERR_WANT_READ. If the library detects
* protocol violation in a received frame, this function returns
* WSLAY_ERR_PROTO. If callback functions report a failure, this
* function returns WSLAY_ERR_INVALID_CALLBACK. This function does
* not always receive whole frame in a single call. If there are
* remaining data to be received, call this function again. This
* function ensures frame alignment.
*/
ssize_t wslay_frame_recv(wslay_frame_context_ptr ctx,
struct wslay_frame_iocb *iocb);
struct wslay_event_context;
/* Pointer to the event-based API context */
typedef struct wslay_event_context *wslay_event_context_ptr;
struct wslay_event_on_msg_recv_arg {
/* reserved bits: rsv = (RSV1 << 2) | (RSV2 << 1) | RSV3 */
uint8_t rsv;
/* opcode */
uint8_t opcode;
/* received message */
const uint8_t *msg;
/* message length */
size_t msg_length;
/*
* Status code iff opcode == WSLAY_CONNECTION_CLOSE. If no status
* code is included in the close control frame, it is set to 0.
*/
uint16_t status_code;
};
/*
* Callback function invoked by wslay_event_recv() when a message is
* completely received.
*/
typedef void (*wslay_event_on_msg_recv_callback)
(wslay_event_context_ptr ctx,
const struct wslay_event_on_msg_recv_arg *arg, void *user_data);
struct wslay_event_on_frame_recv_start_arg {
/* fin bit; 1 for final frame, or 0. */
uint8_t fin;
/* reserved bits: rsv = (RSV1 << 2) | (RSV2 << 1) | RSV3 */
uint8_t rsv;
/* opcode of the frame */
uint8_t opcode;
/* payload length of ths frame */
uint64_t payload_length;
};
/*
* Callback function invoked by wslay_event_recv() when a new frame
* starts to be received. This callback function is only invoked once
* for each frame.
*/
typedef void (*wslay_event_on_frame_recv_start_callback)
(wslay_event_context_ptr ctx,
const struct wslay_event_on_frame_recv_start_arg *arg, void *user_data);
struct wslay_event_on_frame_recv_chunk_arg {
/* chunk of payload data */
const uint8_t *data;
/* length of data */
size_t data_length;
};
/*
* Callback function invoked by wslay_event_recv() when a chunk of
* frame payload is received.
*/
typedef void (*wslay_event_on_frame_recv_chunk_callback)
(wslay_event_context_ptr ctx,
const struct wslay_event_on_frame_recv_chunk_arg *arg, void *user_data);
/*
* Callback function invoked by wslay_event_recv() when a frame is
* completely received.
*/
typedef void (*wslay_event_on_frame_recv_end_callback)
(wslay_event_context_ptr ctx, void *user_data);
/*
* Callback function invoked by wslay_event_recv() when it wants to
* receive more data from peer. The implementation of this callback
* function must read data at most len bytes from peer and store them
* in buf and return the number of bytes read. flags is always 0 in
* this version.
*
* If there is an error, return -1 and set error code
* WSLAY_ERR_CALLBACK_FAILURE using wslay_event_set_error(). Wslay
* event-based API on the whole assumes non-blocking I/O. If the cause
* of error is EAGAIN or EWOULDBLOCK, set WSLAY_ERR_WOULDBLOCK
* instead. This is important because it tells wslay_event_recv() to
* stop receiving further data and return.
*/
typedef ssize_t (*wslay_event_recv_callback)(wslay_event_context_ptr ctx,
uint8_t *buf, size_t len,
int flags, void *user_data);
/*
* Callback function invoked by wslay_event_send() when it wants to
* send more data to peer. The implementation of this callback
* function must send data at most len bytes to peer and return the
* number of bytes sent. flags is the bitwise OR of zero or more of
* the following flag:
*
* WSLAY_MSG_MORE
* There is more data to send
*
* It provides some hints to tune performance and behaviour.
*
* If there is an error, return -1 and set error code
* WSLAY_ERR_CALLBACK_FAILURE using wslay_event_set_error(). Wslay
* event-based API on the whole assumes non-blocking I/O. If the cause
* of error is EAGAIN or EWOULDBLOCK, set WSLAY_ERR_WOULDBLOCK
* instead. This is important because it tells wslay_event_send() to
* stop sending data and return.
*/
typedef ssize_t (*wslay_event_send_callback)(wslay_event_context_ptr ctx,
const uint8_t *data, size_t len,
int flags, void *user_data);
/*
* Callback function invoked by wslay_event_send() when it wants new
* mask key. As described in RFC6455, only the traffic from WebSocket
* client is masked, so this callback function is only needed if an
* event-based API is initialized for WebSocket client use.
*/
typedef int (*wslay_event_genmask_callback)(wslay_event_context_ptr ctx,
uint8_t *buf, size_t len,
void *user_data);
struct wslay_event_callbacks {
wslay_event_recv_callback recv_callback;
wslay_event_send_callback send_callback;
wslay_event_genmask_callback genmask_callback;
wslay_event_on_frame_recv_start_callback on_frame_recv_start_callback;
wslay_event_on_frame_recv_chunk_callback on_frame_recv_chunk_callback;
wslay_event_on_frame_recv_end_callback on_frame_recv_end_callback;
wslay_event_on_msg_recv_callback on_msg_recv_callback;
};
/*
* Initializes ctx as WebSocket Server. user_data is an arbitrary
* pointer, which is directly passed to each callback functions as
* user_data argument.
*
* On success, returns 0. On error, returns one of following negative
* values:
*
* WSLAY_ERR_NOMEM
* Out of memory.
*/
int wslay_event_context_server_init
(wslay_event_context_ptr *ctx,
const struct wslay_event_callbacks *callbacks, void *user_data);
/*
* Initializes ctx as WebSocket client. user_data is an arbitrary
* pointer, which is directly passed to each callback functions as
* user_data argument.
*
* On success, returns 0. On error, returns one of following negative
* values:
*
* WSLAY_ERR_NOMEM
* Out of memory.
*/
int wslay_event_context_client_init
(wslay_event_context_ptr *ctx,
const struct wslay_event_callbacks *callbacks, void *user_data);
/*
* Releases allocated resources for ctx.
*/
void wslay_event_context_free(wslay_event_context_ptr ctx);
/*
* Sets a bit mask of allowed reserved bits.
* Currently only permitted values are WSLAY_RSV1_BIT to allow PMCE
* extension (see RFC-7692) or WSLAY_RSV_NONE to disable.
*
* Default: WSLAY_RSV_NONE
*/
void wslay_event_config_set_allowed_rsv_bits(wslay_event_context_ptr ctx,
uint8_t rsv);
/*
* Enables or disables buffering of an entire message for non-control
* frames. If val is 0, buffering is enabled. Otherwise, buffering is
* disabled. If wslay_event_on_msg_recv_callback is invoked when
* buffering is disabled, the msg_length member of struct
* wslay_event_on_msg_recv_arg is set to 0.
*
* The control frames are always buffered regardless of this function call.
*
* This function must not be used after the first invocation of
* wslay_event_recv() function.
*/
void wslay_event_config_set_no_buffering(wslay_event_context_ptr ctx, int val);
/*
* Sets maximum length of a message that can be received. The length
* of message is checked by wslay_event_recv() function. If the length
* of a message is larger than this value, reading operation is
* disabled (same effect with wslay_event_shutdown_read() call) and
* close control frame with WSLAY_CODE_MESSAGE_TOO_BIG is queued. If
* buffering for non-control frames is disabled, the library checks
* each frame payload length and does not check length of entire
* message.
*
* The default value is (1u << 31)-1.
*/
void wslay_event_config_set_max_recv_msg_length(wslay_event_context_ptr ctx,
uint64_t val);
/*
* Sets callbacks to ctx. The callbacks previouly set by this function
* or wslay_event_context_server_init() or
* wslay_event_context_client_init() are replaced with callbacks.
*/
void wslay_event_config_set_callbacks
(wslay_event_context_ptr ctx, const struct wslay_event_callbacks *callbacks);
/*
* Receives messages from peer. When receiving
* messages, it uses wslay_event_recv_callback function. Single call
* of this function receives multiple messages until
* wslay_event_recv_callback function sets error code
* WSLAY_ERR_WOULDBLOCK.
*
* When close control frame is received, this function automatically
* queues close control frame. Also this function calls
* wslay_event_set_read_enabled() with second argument 0 to disable
* further read from peer.
*
* When ping control frame is received, this function automatically
* queues pong control frame.
*
* In case of a fatal errror which leads to negative return code, this
* function calls wslay_event_set_read_enabled() with second argument
* 0 to disable further read from peer.
*
* wslay_event_recv() returns 0 if it succeeds, or one of the
* following negative error codes:
*
* WSLAY_ERR_CALLBACK_FAILURE
* User defined callback function is failed.
*
* WSLAY_ERR_NOMEM
* Out of memory.
*
* When negative error code is returned, application must not make any
* further call of wslay_event_recv() and must close WebSocket
* connection.
*/
int wslay_event_recv(wslay_event_context_ptr ctx);
/*
* Sends queued messages to peer. When sending a
* message, it uses wslay_event_send_callback function. Single call of
* wslay_event_send() sends multiple messages until
* wslay_event_send_callback sets error code WSLAY_ERR_WOULDBLOCK.
*
* If ctx is initialized for WebSocket client use, wslay_event_send()
* uses wslay_event_genmask_callback to get new mask key.
*
* When a message queued using wslay_event_queue_fragmented_msg() is
* sent, wslay_event_send() invokes
* wslay_event_fragmented_msg_callback for that message.
*
* After close control frame is sent, this function calls
* wslay_event_set_write_enabled() with second argument 0 to disable
* further transmission to peer.
*
* If there are any pending messages, wslay_event_want_write() returns
* 1, otherwise returns 0.
*
* In case of a fatal errror which leads to negative return code, this
* function calls wslay_event_set_write_enabled() with second argument
* 0 to disable further transmission to peer.
*
* wslay_event_send() returns 0 if it succeeds, or one of the
* following negative error codes:
*
* WSLAY_ERR_CALLBACK_FAILURE
* User defined callback function is failed.
*
* WSLAY_ERR_NOMEM
* Out of memory.
*
* When negative error code is returned, application must not make any
* further call of wslay_event_send() and must close WebSocket
* connection.
*/
int wslay_event_send(wslay_event_context_ptr ctx);
struct wslay_event_msg {
uint8_t opcode;
const uint8_t *msg;
size_t msg_length;
};
/*
* Queues message specified in arg.
*
* This function supports both control and non-control messages and
* the given message is sent without fragmentation. If fragmentation
* is needed, use wslay_event_queue_fragmented_msg() function instead.
*
* This function just queues a message and does not send
* it. wslay_event_send() function call sends these queued messages.
*
* wslay_event_queue_msg() returns 0 if it succeeds, or returns the
* following negative error codes:
*
* WSLAY_ERR_NO_MORE_MSG
* Could not queue given message. The one of possible reason is that
* close control frame has been queued/sent and no further queueing
* message is not allowed.
*
* WSLAY_ERR_INVALID_ARGUMENT
* The given message is invalid.
*
* WSLAY_ERR_NOMEM
* Out of memory.
*/
int wslay_event_queue_msg(wslay_event_context_ptr ctx,
const struct wslay_event_msg *arg);
/*
* Extended version of wslay_event_queue_msg which allows to set reserved bits.
*/
int wslay_event_queue_msg_ex(wslay_event_context_ptr ctx,
const struct wslay_event_msg *arg, uint8_t rsv);
/*
* Specify "source" to generate message.
*/
union wslay_event_msg_source {
int fd;
void *data;
};
/*
* Callback function called by wslay_event_send() to read message data
* from source. The implementation of
* wslay_event_fragmented_msg_callback must store at most len bytes of
* data to buf and return the number of stored bytes. If all data is
* read (i.e., EOF), set *eof to 1. If no data can be generated at the
* moment, return 0. If there is an error, return -1 and set error
* code WSLAY_ERR_CALLBACK_FAILURE using wslay_event_set_error().
*/
typedef ssize_t (*wslay_event_fragmented_msg_callback)
(wslay_event_context_ptr ctx,
uint8_t *buf, size_t len, const union wslay_event_msg_source *source,
int *eof, void *user_data);
struct wslay_event_fragmented_msg {
/* opcode */
uint8_t opcode;
/* "source" to generate message data */
union wslay_event_msg_source source;
/* Callback function to read message data from source. */
wslay_event_fragmented_msg_callback read_callback;
};
/*
* Queues a fragmented message specified in arg.
*
* This function supports non-control messages only. For control frames,
* use wslay_event_queue_msg() or wslay_event_queue_close().
*
* This function just queues a message and does not send
* it. wslay_event_send() function call sends these queued messages.
*
* wslay_event_queue_fragmented_msg() returns 0 if it succeeds, or
* returns the following negative error codes:
*
* WSLAY_ERR_NO_MORE_MSG
* Could not queue given message. The one of possible reason is that
* close control frame has been queued/sent and no further queueing
* message is not allowed.
*
* WSLAY_ERR_INVALID_ARGUMENT
* The given message is invalid.
*
* WSLAY_ERR_NOMEM
* Out of memory.
*/
int wslay_event_queue_fragmented_msg
(wslay_event_context_ptr ctx, const struct wslay_event_fragmented_msg *arg);
/*
* Extended version of wslay_event_queue_fragmented_msg which allows to set
* reserved bits.
*/
int wslay_event_queue_fragmented_msg_ex(wslay_event_context_ptr ctx,
const struct wslay_event_fragmented_msg *arg, uint8_t rsv);
/*
* Queues close control frame. This function is provided just for
* convenience. wslay_event_queue_msg() can queue a close control
* frame as well. status_code is the status code of close control
* frame. reason is the close reason encoded in UTF-8. reason_length
* is the length of reason in bytes. reason_length must be less than
* 123 bytes.
*
* If status_code is 0, reason and reason_length is not used and close
* control frame with zero-length payload will be queued.
*
* This function just queues a message and does not send
* it. wslay_event_send() function call sends these queued messages.
*
* wslay_event_queue_close() returns 0 if it succeeds, or returns the
* following negative error codes:
*
* WSLAY_ERR_NO_MORE_MSG
* Could not queue given message. The one of possible reason is that
* close control frame has been queued/sent and no further queueing
* message is not allowed.
*
* WSLAY_ERR_INVALID_ARGUMENT
* The given message is invalid.
*
* WSLAY_ERR_NOMEM
* Out of memory.
*/
int wslay_event_queue_close(wslay_event_context_ptr ctx,
uint16_t status_code,
const uint8_t *reason, size_t reason_length);
/*
* Sets error code to tell the library there is an error. This
* function is typically used in user defined callback functions. See
* the description of callback function to know which error code
* should be used.
*/
void wslay_event_set_error(wslay_event_context_ptr ctx, int val);
/*
* Query whehter the library want to read more data from peer.
*
* wslay_event_want_read() returns 1 if the library want to read more
* data from peer, or returns 0.
*/
int wslay_event_want_read(wslay_event_context_ptr ctx);
/*
* Query whehter the library want to send more data to peer.
*
* wslay_event_want_write() returns 1 if the library want to send more
* data to peer, or returns 0.
*/
int wslay_event_want_write(wslay_event_context_ptr ctx);
/*
* Prevents the event-based API context from reading any further data
* from peer.
*
* This function may be used with wslay_event_queue_close() if the
* application detects error in the data received and wants to fail
* WebSocket connection.
*/
void wslay_event_shutdown_read(wslay_event_context_ptr ctx);
/*
* Prevents the event-based API context from sending any further data
* to peer.
*/
void wslay_event_shutdown_write(wslay_event_context_ptr ctx);
/*
* Returns 1 if the event-based API context allows read operation, or
* return 0.
*
* After wslay_event_shutdown_read() is called,
* wslay_event_get_read_enabled() returns 0.
*/
int wslay_event_get_read_enabled(wslay_event_context_ptr ctx);
/*
* Returns 1 if the event-based API context allows write operation, or
* return 0.
*
* After wslay_event_shutdown_write() is called,
* wslay_event_get_write_enabled() returns 0.
*/
int wslay_event_get_write_enabled(wslay_event_context_ptr ctx);
/*
* Returns 1 if a close control frame has been received from peer, or
* returns 0.
*/
int wslay_event_get_close_received(wslay_event_context_ptr ctx);
/*
* Returns 1 if a close control frame has been sent to peer, or
* returns 0.
*/
int wslay_event_get_close_sent(wslay_event_context_ptr ctx);
/*
* Returns status code received in close control frame. If no close
* control frame has not been received, returns
* WSLAY_CODE_ABNORMAL_CLOSURE. If received close control frame has no
* status code, returns WSLAY_CODE_NO_STATUS_RCVD.
*/
uint16_t wslay_event_get_status_code_received(wslay_event_context_ptr ctx);
/*
* Returns status code sent in close control frame. If no close
* control frame has not been sent, returns
* WSLAY_CODE_ABNORMAL_CLOSURE. If sent close control frame has no
* status code, returns WSLAY_CODE_NO_STATUS_RCVD.
*/
uint16_t wslay_event_get_status_code_sent(wslay_event_context_ptr ctx);
/*
* Returns the number of queued messages.
*/
size_t wslay_event_get_queued_msg_count(wslay_event_context_ptr ctx);
/*
* Returns the sum of queued message length. It only counts the
* message length queued using wslay_event_queue_msg() or
* wslay_event_queue_close().
*/
size_t wslay_event_get_queued_msg_length(wslay_event_context_ptr ctx);
#ifdef __cplusplus
}
#endif
#endif /* WSLAY_H */

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/*
* Wslay - The WebSocket Library
*
* Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
*
* 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.
*/
#ifndef WSLAYVER_H
#define WSLAYVER_H
/* Version number of wslay release */
#define WSLAY_VERSION "1.1.0"
#endif /* WSLAYVER_H */

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/*
* Wslay - The WebSocket Library
*
* Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
*
* 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.
*/
#ifndef WSLAY_EVENT_H
#define WSLAY_EVENT_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <wslay/wslay.h>
struct wslay_stack;
struct wslay_queue;
struct wslay_event_byte_chunk {
uint8_t *data;
size_t data_length;
};
struct wslay_event_imsg {
uint8_t fin;
uint8_t rsv;
uint8_t opcode;
uint32_t utf8state;
struct wslay_queue *chunks;
size_t msg_length;
};
enum wslay_event_msg_type {
WSLAY_NON_FRAGMENTED,
WSLAY_FRAGMENTED
};
struct wslay_event_omsg {
uint8_t fin;
uint8_t opcode;
uint8_t rsv;
enum wslay_event_msg_type type;
uint8_t *data;
size_t data_length;
union wslay_event_msg_source source;
wslay_event_fragmented_msg_callback read_callback;
};
struct wslay_event_frame_user_data {
wslay_event_context_ptr ctx;
void *user_data;
};
enum wslay_event_close_status {
WSLAY_CLOSE_RECEIVED = 1 << 0,
WSLAY_CLOSE_QUEUED = 1 << 1,
WSLAY_CLOSE_SENT = 1 << 2
};
enum wslay_event_config {
WSLAY_CONFIG_NO_BUFFERING = 1 << 0
};
struct wslay_event_context {
/* config status, bitwise OR of enum wslay_event_config values*/
uint32_t config;
/* maximum message length that can be received */
uint64_t max_recv_msg_length;
/* 1 if initialized for server, otherwise 0 */
uint8_t server;
/* bitwise OR of enum wslay_event_close_status values */
uint8_t close_status;
/* status code in received close control frame */
uint16_t status_code_recv;
/* status code in sent close control frame */
uint16_t status_code_sent;
wslay_frame_context_ptr frame_ctx;
/* 1 if reading is enabled, otherwise 0. Upon receiving close
control frame this value set to 0. If any errors in read
operation will also set this value to 0. */
uint8_t read_enabled;
/* 1 if writing is enabled, otherwise 0 Upon completing sending
close control frame, this value set to 0. If any errors in write
opration will also set this value to 0. */
uint8_t write_enabled;
/* imsg buffer to allow interleaved control frame between
non-control frames. */
struct wslay_event_imsg imsgs[2];
/* Pointer to imsgs to indicate current used buffer. */
struct wslay_event_imsg *imsg;
/* payload length of frame currently being received. */
uint64_t ipayloadlen;
/* next byte offset of payload currently being received. */
uint64_t ipayloadoff;
/* error value set by user callback */
int error;
/* Pointer to the message currently being sent. NULL if no message
is currently sent. */
struct wslay_event_omsg *omsg;
/* Queue for non-control frames */
struct wslay_queue/*<wslay_omsg*>*/ *send_queue;
/* Queue for control frames */
struct wslay_queue/*<wslay_omsg*>*/ *send_ctrl_queue;
/* Size of send_queue + size of send_ctrl_queue */
size_t queued_msg_count;
/* The sum of message length in send_queue */
size_t queued_msg_length;
/* Buffer used for fragmented messages */
uint8_t obuf[4096];
uint8_t *obuflimit;
uint8_t *obufmark;
/* payload length of frame currently being sent. */
uint64_t opayloadlen;
/* next byte offset of payload currently being sent. */
uint64_t opayloadoff;
struct wslay_event_callbacks callbacks;
struct wslay_event_frame_user_data frame_user_data;
void *user_data;
uint8_t allowed_rsv_bits;
};
#endif /* WSLAY_EVENT_H */

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/*
* Wslay - The WebSocket Library
*
* Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
*
* 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.
*/
#include "wslay_frame.h"
#include <stddef.h>
#include <string.h>
#include <assert.h>
#include "wslay_net.h"
#define wslay_min(A, B) (((A) < (B)) ? (A) : (B))
int wslay_frame_context_init(wslay_frame_context_ptr *ctx,
const struct wslay_frame_callbacks *callbacks,
void *user_data)
{
*ctx = (wslay_frame_context_ptr)malloc(sizeof(struct wslay_frame_context));
if(*ctx == NULL) {
return -1;
}
memset(*ctx, 0, sizeof(struct wslay_frame_context));
(*ctx)->istate = RECV_HEADER1;
(*ctx)->ireqread = 2;
(*ctx)->ostate = PREP_HEADER;
(*ctx)->user_data = user_data;
(*ctx)->ibufmark = (*ctx)->ibuflimit = (*ctx)->ibuf;
(*ctx)->callbacks = *callbacks;
return 0;
}
void wslay_frame_context_free(wslay_frame_context_ptr ctx)
{
free(ctx);
}
ssize_t wslay_frame_send(wslay_frame_context_ptr ctx,
struct wslay_frame_iocb *iocb)
{
if(iocb->data_length > iocb->payload_length) {
return WSLAY_ERR_INVALID_ARGUMENT;
}
if(ctx->ostate == PREP_HEADER) {
uint8_t *hdptr = ctx->oheader;
memset(ctx->oheader, 0, sizeof(ctx->oheader));
*hdptr |= (iocb->fin << 7) & 0x80u;
*hdptr |= (iocb->rsv << 4) & 0x70u;
*hdptr |= iocb->opcode & 0xfu;
++hdptr;
*hdptr |= (iocb->mask << 7) & 0x80u;
if(wslay_is_ctrl_frame(iocb->opcode) && iocb->payload_length > 125) {
return WSLAY_ERR_INVALID_ARGUMENT;
}
if(iocb->payload_length < 126) {
*hdptr |= iocb->payload_length;
++hdptr;
} else if(iocb->payload_length < (1 << 16)) {
uint16_t len = htons(iocb->payload_length);
*hdptr |= 126;
++hdptr;
memcpy(hdptr, &len, 2);
hdptr += 2;
} else if(iocb->payload_length < (1ull << 63)) {
uint64_t len = hton64(iocb->payload_length);
*hdptr |= 127;
++hdptr;
memcpy(hdptr, &len, 8);
hdptr += 8;
} else {
/* Too large payload length */
return WSLAY_ERR_INVALID_ARGUMENT;
}
if(iocb->mask) {
if(ctx->callbacks.genmask_callback(ctx->omaskkey, 4,
ctx->user_data) != 0) {
return WSLAY_ERR_INVALID_CALLBACK;
} else {
ctx->omask = 1;
memcpy(hdptr, ctx->omaskkey, 4);
hdptr += 4;
}
}
ctx->ostate = SEND_HEADER;
ctx->oheadermark = ctx->oheader;
ctx->oheaderlimit = hdptr;
ctx->opayloadlen = iocb->payload_length;
ctx->opayloadoff = 0;
}
if(ctx->ostate == SEND_HEADER) {
ptrdiff_t len = ctx->oheaderlimit-ctx->oheadermark;
ssize_t r;
int flags = 0;
if(iocb->data_length > 0) {
flags |= WSLAY_MSG_MORE;
};
r = ctx->callbacks.send_callback(ctx->oheadermark, len, flags,
ctx->user_data);
if(r > 0) {
if(r > len) {
return WSLAY_ERR_INVALID_CALLBACK;
} else {
ctx->oheadermark += r;
if(ctx->oheadermark == ctx->oheaderlimit) {
ctx->ostate = SEND_PAYLOAD;
} else {
return WSLAY_ERR_WANT_WRITE;
}
}
} else {
return WSLAY_ERR_WANT_WRITE;
}
}
if(ctx->ostate == SEND_PAYLOAD) {
size_t totallen = 0;
if(iocb->data_length > 0) {
if(ctx->omask) {
uint8_t temp[4096];
const uint8_t *datamark = iocb->data,
*datalimit = iocb->data+iocb->data_length;
while(datamark < datalimit) {
size_t datalen = datalimit - datamark;
const uint8_t *writelimit = datamark+
wslay_min(sizeof(temp), datalen);
size_t writelen = writelimit-datamark;
ssize_t r;
size_t i;
for(i = 0; i < writelen; ++i) {
temp[i] = datamark[i]^ctx->omaskkey[(ctx->opayloadoff+i)%4];
}
r = ctx->callbacks.send_callback(temp, writelen, 0, ctx->user_data);
if(r > 0) {
if((size_t)r > writelen) {
return WSLAY_ERR_INVALID_CALLBACK;
} else {
datamark += r;
ctx->opayloadoff += r;
totallen += r;
}
} else {
if(totallen > 0) {
break;
} else {
return WSLAY_ERR_WANT_WRITE;
}
}
}
} else {
ssize_t r;
r = ctx->callbacks.send_callback(iocb->data, iocb->data_length, 0,
ctx->user_data);
if(r > 0) {
if((size_t)r > iocb->data_length) {
return WSLAY_ERR_INVALID_CALLBACK;
} else {
ctx->opayloadoff += r;
totallen = r;
}
} else {
return WSLAY_ERR_WANT_WRITE;
}
}
}
if(ctx->opayloadoff == ctx->opayloadlen) {
ctx->ostate = PREP_HEADER;
}
return totallen;
}
return WSLAY_ERR_INVALID_ARGUMENT;
}
static void wslay_shift_ibuf(wslay_frame_context_ptr ctx)
{
ptrdiff_t len = ctx->ibuflimit-ctx->ibufmark;
memmove(ctx->ibuf, ctx->ibufmark, len);
ctx->ibuflimit = ctx->ibuf+len;
ctx->ibufmark = ctx->ibuf;
}
static ssize_t wslay_recv(wslay_frame_context_ptr ctx)
{
ssize_t r;
if(ctx->ibufmark != ctx->ibuf) {
wslay_shift_ibuf(ctx);
}
r = ctx->callbacks.recv_callback
(ctx->ibuflimit, ctx->ibuf+sizeof(ctx->ibuf)-ctx->ibuflimit,
0, ctx->user_data);
if(r > 0) {
ctx->ibuflimit += r;
} else {
r = WSLAY_ERR_WANT_READ;
}
return r;
}
#define WSLAY_AVAIL_IBUF(ctx) ((size_t)(ctx->ibuflimit - ctx->ibufmark))
ssize_t wslay_frame_recv(wslay_frame_context_ptr ctx,
struct wslay_frame_iocb *iocb)
{
ssize_t r;
if(ctx->istate == RECV_HEADER1) {
uint8_t fin, opcode, rsv, payloadlen;
if(WSLAY_AVAIL_IBUF(ctx) < ctx->ireqread) {
if((r = wslay_recv(ctx)) <= 0) {
return r;
}
}
if(WSLAY_AVAIL_IBUF(ctx) < ctx->ireqread) {
return WSLAY_ERR_WANT_READ;
}
fin = (ctx->ibufmark[0] >> 7) & 1;
rsv = (ctx->ibufmark[0] >> 4) & 7;
opcode = ctx->ibufmark[0] & 0xfu;
ctx->iom.opcode = opcode;
ctx->iom.fin = fin;
ctx->iom.rsv = rsv;
++ctx->ibufmark;
ctx->imask = (ctx->ibufmark[0] >> 7) & 1;
payloadlen = ctx->ibufmark[0] & 0x7fu;
++ctx->ibufmark;
if(wslay_is_ctrl_frame(opcode) && (payloadlen > 125 || !fin)) {
return WSLAY_ERR_PROTO;
}
if(payloadlen == 126) {
ctx->istate = RECV_EXT_PAYLOADLEN;
ctx->ireqread = 2;
} else if(payloadlen == 127) {
ctx->istate = RECV_EXT_PAYLOADLEN;
ctx->ireqread = 8;
} else {
ctx->ipayloadlen = payloadlen;
ctx->ipayloadoff = 0;
if(ctx->imask) {
ctx->istate = RECV_MASKKEY;
ctx->ireqread = 4;
} else {
ctx->istate = RECV_PAYLOAD;
}
}
}
if(ctx->istate == RECV_EXT_PAYLOADLEN) {
if(WSLAY_AVAIL_IBUF(ctx) < ctx->ireqread) {
if((r = wslay_recv(ctx)) <= 0) {
return r;
}
if(WSLAY_AVAIL_IBUF(ctx) < ctx->ireqread) {
return WSLAY_ERR_WANT_READ;
}
}
ctx->ipayloadlen = 0;
ctx->ipayloadoff = 0;
memcpy((uint8_t*)&ctx->ipayloadlen+(8-ctx->ireqread),
ctx->ibufmark, ctx->ireqread);
ctx->ipayloadlen = ntoh64(ctx->ipayloadlen);
ctx->ibufmark += ctx->ireqread;
if(ctx->ireqread == 8) {
if(ctx->ipayloadlen < (1 << 16) ||
ctx->ipayloadlen & (1ull << 63)) {
return WSLAY_ERR_PROTO;
}
} else if(ctx->ipayloadlen < 126) {
return WSLAY_ERR_PROTO;
}
if(ctx->imask) {
ctx->istate = RECV_MASKKEY;
ctx->ireqread = 4;
} else {
ctx->istate = RECV_PAYLOAD;
}
}
if(ctx->istate == RECV_MASKKEY) {
if(WSLAY_AVAIL_IBUF(ctx) < ctx->ireqread) {
if((r = wslay_recv(ctx)) <= 0) {
return r;
}
if(WSLAY_AVAIL_IBUF(ctx) < ctx->ireqread) {
return WSLAY_ERR_WANT_READ;
}
}
memcpy(ctx->imaskkey, ctx->ibufmark, 4);
ctx->ibufmark += 4;
ctx->istate = RECV_PAYLOAD;
}
if(ctx->istate == RECV_PAYLOAD) {
uint8_t *readlimit, *readmark;
uint64_t rempayloadlen = ctx->ipayloadlen-ctx->ipayloadoff;
if(WSLAY_AVAIL_IBUF(ctx) == 0 && rempayloadlen > 0) {
if((r = wslay_recv(ctx)) <= 0) {
return r;
}
}
readmark = ctx->ibufmark;
readlimit = WSLAY_AVAIL_IBUF(ctx) < rempayloadlen ?
ctx->ibuflimit : ctx->ibufmark+rempayloadlen;
if(ctx->imask) {
for(; ctx->ibufmark != readlimit;
++ctx->ibufmark, ++ctx->ipayloadoff) {
ctx->ibufmark[0] ^= ctx->imaskkey[ctx->ipayloadoff % 4];
}
} else {
ctx->ibufmark = readlimit;
ctx->ipayloadoff += readlimit-readmark;
}
iocb->fin = ctx->iom.fin;
iocb->rsv = ctx->iom.rsv;
iocb->opcode = ctx->iom.opcode;
iocb->payload_length = ctx->ipayloadlen;
iocb->mask = ctx->imask;
iocb->data = readmark;
iocb->data_length = ctx->ibufmark-readmark;
if(ctx->ipayloadlen == ctx->ipayloadoff) {
ctx->istate = RECV_HEADER1;
ctx->ireqread = 2;
}
return iocb->data_length;
}
return WSLAY_ERR_INVALID_ARGUMENT;
}

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/*
* Wslay - The WebSocket Library
*
* Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
*
* 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.
*/
#ifndef WSLAY_FRAME_H
#define WSLAY_FRAME_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <wslay/wslay.h>
enum wslay_frame_state {
PREP_HEADER,
SEND_HEADER,
SEND_PAYLOAD,
RECV_HEADER1,
RECV_PAYLOADLEN,
RECV_EXT_PAYLOADLEN,
RECV_MASKKEY,
RECV_PAYLOAD
};
struct wslay_frame_opcode_memo {
uint8_t fin;
uint8_t opcode;
uint8_t rsv;
};
struct wslay_frame_context {
uint8_t ibuf[4096];
uint8_t *ibufmark;
uint8_t *ibuflimit;
struct wslay_frame_opcode_memo iom;
uint64_t ipayloadlen;
uint64_t ipayloadoff;
uint8_t imask;
uint8_t imaskkey[4];
enum wslay_frame_state istate;
size_t ireqread;
uint8_t oheader[14];
uint8_t *oheadermark;
uint8_t *oheaderlimit;
uint64_t opayloadlen;
uint64_t opayloadoff;
uint8_t omask;
uint8_t omaskkey[4];
enum wslay_frame_state ostate;
struct wslay_frame_callbacks callbacks;
void *user_data;
};
#endif /* WSLAY_FRAME_H */

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/*
* Wslay - The WebSocket Library
*
* Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
*
* 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.
*/
#include "wslay_net.h"
#ifndef WORDS_BIGENDIAN
uint64_t wslay_byteswap64(uint64_t x)
{
uint64_t u = ntohl(x & 0xffffffffllu);
uint64_t l = ntohl(x >> 32);
return (u << 32) | l;
}
#endif /* !WORDS_BIGENDIAN */

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/*
* Wslay - The WebSocket Library
*
* Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
*
* 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.
*/
#ifndef WSLAY_NET_H
#define WSLAY_NET_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <wslay/wslay.h>
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif /* HAVE_ARPA_INET_H */
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif /* HAVE_NETINET_IN_H */
/* For Mingw build */
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif /* HAVE_WINSOCK2_H */
#ifdef WORDS_BIGENDIAN
# define ntoh64(x) (x)
# define hton64(x) (x)
#else /* !WORDS_BIGENDIAN */
uint64_t wslay_byteswap64(uint64_t x);
# define ntoh64(x) wslay_byteswap64(x)
# define hton64(x) wslay_byteswap64(x)
#endif /* !WORDS_BIGENDIAN */
#endif /* WSLAY_NET_H */

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/*
* Wslay - The WebSocket Library
*
* Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
*
* 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.
*/
#include "wslay_queue.h"
#include <string.h>
#include <assert.h>
struct wslay_queue* wslay_queue_new(void)
{
struct wslay_queue *queue = (struct wslay_queue*)malloc
(sizeof(struct wslay_queue));
if(!queue) {
return NULL;
}
queue->top = queue->tail = NULL;
return queue;
}
void wslay_queue_free(struct wslay_queue *queue)
{
if(!queue) {
return;
} else {
struct wslay_queue_cell *p = queue->top;
while(p) {
struct wslay_queue_cell *next = p->next;
free(p);
p = next;
}
free(queue);
}
}
int wslay_queue_push(struct wslay_queue *queue, void *data)
{
struct wslay_queue_cell *new_cell = (struct wslay_queue_cell*)malloc
(sizeof(struct wslay_queue_cell));
if(!new_cell) {
return WSLAY_ERR_NOMEM;
}
new_cell->data = data;
new_cell->next = NULL;
if(queue->tail) {
queue->tail->next = new_cell;
queue->tail = new_cell;
} else {
queue->top = queue->tail = new_cell;
}
return 0;
}
int wslay_queue_push_front(struct wslay_queue *queue, void *data)
{
struct wslay_queue_cell *new_cell = (struct wslay_queue_cell*)malloc
(sizeof(struct wslay_queue_cell));
if(!new_cell) {
return WSLAY_ERR_NOMEM;
}
new_cell->data = data;
new_cell->next = queue->top;
queue->top = new_cell;
if(!queue->tail) {
queue->tail = queue->top;
}
return 0;
}
void wslay_queue_pop(struct wslay_queue *queue)
{
struct wslay_queue_cell *top = queue->top;
assert(top);
queue->top = top->next;
if(top == queue->tail) {
queue->tail = NULL;
}
free(top);
}
void* wslay_queue_top(struct wslay_queue *queue)
{
assert(queue->top);
return queue->top->data;
}
void* wslay_queue_tail(struct wslay_queue *queue)
{
assert(queue->tail);
return queue->tail->data;
}
int wslay_queue_empty(struct wslay_queue *queue)
{
return queue->top == NULL;
}

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/*
* Wslay - The WebSocket Library
*
* Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
*
* 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.
*/
#ifndef WSLAY_QUEUE_H
#define WSLAY_QUEUE_H
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif /* HAVE_CONFIG_H */
#include <wslay/wslay.h>
struct wslay_queue_cell {
void *data;
struct wslay_queue_cell *next;
};
struct wslay_queue {
struct wslay_queue_cell *top;
struct wslay_queue_cell *tail;
};
struct wslay_queue* wslay_queue_new(void);
void wslay_queue_free(struct wslay_queue *queue);
int wslay_queue_push(struct wslay_queue *queue, void *data);
int wslay_queue_push_front(struct wslay_queue *queue, void *data);
void wslay_queue_pop(struct wslay_queue *queue);
void* wslay_queue_top(struct wslay_queue *queue);
void* wslay_queue_tail(struct wslay_queue *queue);
int wslay_queue_empty(struct wslay_queue *queue);
#endif /* WSLAY_QUEUE_H */

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/*
* Wslay - The WebSocket Library
*
* Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
*
* 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.
*/
#include "wslay_stack.h"
#include <string.h>
#include <assert.h>
struct wslay_stack* wslay_stack_new()
{
struct wslay_stack *stack = (struct wslay_stack*)malloc
(sizeof(struct wslay_stack));
if(!stack) {
return NULL;
}
stack->top = NULL;
return stack;
}
void wslay_stack_free(struct wslay_stack *stack)
{
struct wslay_stack_cell *p;
if(!stack) {
return;
}
p = stack->top;
while(p) {
struct wslay_stack_cell *next = p->next;
free(p);
p = next;
}
free(stack);
}
int wslay_stack_push(struct wslay_stack *stack, void *data)
{
struct wslay_stack_cell *new_cell = (struct wslay_stack_cell*)malloc
(sizeof(struct wslay_stack_cell));
if(!new_cell) {
return WSLAY_ERR_NOMEM;
}
new_cell->data = data;
new_cell->next = stack->top;
stack->top = new_cell;
return 0;
}
void wslay_stack_pop(struct wslay_stack *stack)
{
struct wslay_stack_cell *top = stack->top;
assert(top);
stack->top = top->next;
free(top);
}
void* wslay_stack_top(struct wslay_stack *stack)
{
assert(stack->top);
return stack->top->data;
}
int wslay_stack_empty(struct wslay_stack *stack)
{
return stack->top == NULL;
}

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/*
* Wslay - The WebSocket Library
*
* Copyright (c) 2011, 2012 Tatsuhiro Tsujikawa
*
* 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.
*/
#ifndef WSLAY_STACK_H
#define WSLAY_STACK_H
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif /* HAVE_CONFIG_H */
#include <wslay/wslay.h>
struct wslay_stack_cell {
void *data;
struct wslay_stack_cell *next;
};
struct wslay_stack {
struct wslay_stack_cell *top;
};
struct wslay_stack* wslay_stack_new();
void wslay_stack_free(struct wslay_stack *stack);
int wslay_stack_push(struct wslay_stack *stack, void *data);
void wslay_stack_pop(struct wslay_stack *stack);
void* wslay_stack_top(struct wslay_stack *stack);
int wslay_stack_empty(struct wslay_stack *stack);
#endif /* WSLAY_STACK_H */