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/*
Copyright © 2016-22 Miranda NG team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "stdafx.h"
//////////////////////////////////////////////////////////////////////////////////////
// sends a piece of JSON to a server via a websocket, masked
bool CDiscordProto::GatewaySend(const JSONNode &pRoot)
{
if (m_ws == nullptr)
return false;
json_string szText = pRoot.write();
debugLogA("Gateway send: %s", szText.c_str());
m_ws->sendText(szText.c_str());
return true;
}
//////////////////////////////////////////////////////////////////////////////////////
// gateway worker thread
void CDiscordProto::GatewayThread(void*)
{
while (GatewayThreadWorker())
;
ShutdownSession();
}
bool CDiscordProto::GatewayThreadWorker()
{
bool bHasCookie = false;
MHttpHeaders hdrs;
hdrs.AddHeader("Origin", "https://discord.com");
if (!m_szWSCookie.IsEmpty()) {
bHasCookie = true;
hdrs.AddHeader("Cookie", m_szWSCookie);
}
JsonWebSocket<CDiscordProto> ws(this);
NLHR_PTR pReply(ws.connect(m_hGatewayNetlibUser, m_szGateway + "/?encoding=json&v=8", &hdrs));
if (pReply == nullptr) {
debugLogA("Gateway connection failed, exiting");
return false;
}
m_szWSCookie = pReply->GetCookies();
if (pReply->resultCode != 101) {
// if there's no cookie & Miranda is bounced with error 404, simply apply the cookie and try again
if (pReply->resultCode == 404) {
if (!bHasCookie)
return true;
m_szWSCookie.Empty(); // don't use the same cookie twice
}
return false;
}
// succeeded!
debugLogA("Gateway connection succeeded");
m_ws = &ws;
ws.run();
m_ws = nullptr;
return true;
}
//////////////////////////////////////////////////////////////////////////////////////
// handles server commands
void JsonWebSocket<CDiscordProto>::process(const JSONNode &json)
{
int opCode = json["op"].as_int();
switch (opCode) {
case OPCODE_DISPATCH: // process incoming command
{
int iSeq = json["s"].as_int();
if (iSeq != 0)
p->m_iGatewaySeq = iSeq;
CMStringW wszCommand = json["t"].as_mstring();
p->debugLogA("got a server command to dispatch: %S", wszCommand.c_str());
GatewayHandlerFunc pFunc = p->GetHandler(wszCommand);
if (pFunc)
(p->*pFunc)(json["d"]);
}
break;
case OPCODE_RECONNECT: // we need to reconnect asap
p->debugLogA("we need to reconnect, leaving worker thread");
p->m_bTerminated = true;
return;
case OPCODE_INVALID_SESSION: // session invalidated
if (json["d"].as_bool()) // session can be resumed
p->GatewaySendResume();
else {
Sleep(5000); // 5 seconds - recommended timeout
p->GatewaySendIdentify();
}
break;
case OPCODE_HELLO: // hello
p->m_iHartbeatInterval = json["d"]["heartbeat_interval"].as_int();
p->GatewaySendIdentify();
break;
case OPCODE_HEARTBEAT_ACK: // heartbeat ack
break;
default:
p->debugLogA("ACHTUNG! Unknown opcode: %d, report it to developer", opCode);
}
}
//////////////////////////////////////////////////////////////////////////////////////
// requests to be sent to a gateway
void CDiscordProto::GatewaySendGuildInfo(CDiscordGuild *pGuild)
{
if (!pGuild->arChannels.getCount())
return;
JSONNode a1(JSON_ARRAY); a1 << INT_PARAM("", 0) << INT_PARAM("", 99);
CMStringA szId(FORMAT, "%lld", pGuild->arChannels[0]->id);
JSONNode chl(JSON_ARRAY); chl.set_name(szId.c_str()); chl << a1;
JSONNode channels; channels.set_name("channels"); channels << chl;
JSONNode payload; payload.set_name("d");
payload << SINT64_PARAM("guild_id", pGuild->m_id) << BOOL_PARAM("typing", true) << BOOL_PARAM("activities", true) << BOOL_PARAM("presences", true) << channels;
JSONNode root;
root << INT_PARAM("op", OPCODE_REQUEST_SYNC_CHANNEL) << payload;
GatewaySend(root);
}
void CDiscordProto::GatewaySendHeartbeat()
{
// we don't send heartbeat packets until we get logged in
if (!m_iHartbeatInterval || !m_iGatewaySeq)
return;
JSONNode root;
root << INT_PARAM("op", OPCODE_HEARTBEAT) << INT_PARAM("d", m_iGatewaySeq);
GatewaySend(root);
}
void CDiscordProto::GatewaySendIdentify()
{
if (m_szAccessToken == nullptr) {
ConnectionFailed(LOGINERR_WRONGPASSWORD);
return;
}
char szOs[256];
OS_GetDisplayString(szOs, _countof(szOs));
char szVersion[256];
Miranda_GetVersionText(szVersion, _countof(szVersion));
JSONNode props; props.set_name("properties");
props << CHAR_PARAM("os", szOs) << CHAR_PARAM("browser", "Chrome") << CHAR_PARAM("device", szVersion)
<< CHAR_PARAM("referrer", "https://miranda-ng.org") << CHAR_PARAM("referring_domain", "miranda-ng.org");
JSONNode payload; payload.set_name("d");
payload << CHAR_PARAM("token", m_szAccessToken) << props << BOOL_PARAM("compress", false) << INT_PARAM("large_threshold", 250);
JSONNode root;
root << INT_PARAM("op", OPCODE_IDENTIFY) << payload;
GatewaySend(root);
}
void CDiscordProto::GatewaySendResume()
{
char szRandom[40];
uint8_t random[16];
Utils_GetRandom(random, _countof(random));
bin2hex(random, _countof(random), szRandom);
JSONNode root;
root << CHAR_PARAM("token", szRandom) << CHAR_PARAM("session_id", m_szGatewaySessionId) << INT_PARAM("seq", m_iGatewaySeq);
GatewaySend(root);
}
/////////////////////////////////////////////////////////////////////////////////////////
bool CDiscordProto::GatewaySendStatus(int iStatus, const wchar_t *pwszStatusText)
{
// if (iStatus == ID_STATUS_OFFLINE)
// return true;
const char *pszStatus;
switch (iStatus) {
case ID_STATUS_AWAY:
case ID_STATUS_NA:
pszStatus = "idle"; break;
case ID_STATUS_DND:
pszStatus = "dnd"; break;
case ID_STATUS_INVISIBLE:
pszStatus = "invisible"; break;
case ID_STATUS_OFFLINE:
pszStatus = "offline"; break;
default:
pszStatus = "online"; break;
}
JSONNode payload; payload.set_name("d");
payload << INT64_PARAM("since", __int64(time(0)) * 1000) << BOOL_PARAM("afk", true) << CHAR_PARAM("status", pszStatus);
if (pwszStatusText == nullptr)
payload << CHAR_PARAM("game", nullptr);
else {
JSONNode game; game.set_name("game"); game << WCHAR_PARAM("name", pwszStatusText) << INT_PARAM("type", 0);
payload << game;
}
JSONNode root; root << INT_PARAM("op", OPCODE_STATUS_UPDATE) << payload;
return GatewaySend(root);
}
/////////////////////////////////////////////////////////////////////////////////////////
bool CDiscordProto::GatewaySendVoice(JSONNode &payload)
{
payload.set_name("d");
JSONNode root; root << INT_PARAM("op", OPCODE_VOICE_UPDATE) << payload;
return GatewaySend(root);
}
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