discord-rpc/test-rpc-server/rpc-message.js
2017-07-07 16:00:29 -07:00

68 lines
1.7 KiB
JavaScript

const path = require('path');
const VERSION = 1;
const OPCODES = {
HANDSHAKE: 0,
FRAME: 1,
CLOSE: 2,
};
let PipePath;
if (process.platform == 'win32') {
PipePath = '\\\\?\\pipe\\discord-ipc';
}
else {
const temp = process.env.XDG_RUNTIME_DIR || process.env.TMPDIR || process.env.TMP || process.env.TEMP || '/tmp';
PipePath = path.join(temp, 'discord-ipc');
}
class RpcMessage {
static serialize(opcode, obj) {
const serializedJson = JSON.stringify(obj);
const msgLen = serializedJson.length;
let buff = Buffer.alloc(8 + msgLen);
buff.writeInt32LE(opcode, 0);
buff.writeInt32LE(msgLen, 4);
buff.write(serializedJson, 8, serializedJson.length, 'utf-8');
return buff;
}
static handshake(id) {
const opcode = OPCODES.HANDSHAKE;
return RpcMessage.serialize(opcode, {
client_id: id,
v: VERSION
});
}
static send(obj) {
const opcode = OPCODES.FRAME;
return RpcMessage.serialize(opcode, obj);
}
static sendClose(code, message) {
const opcode = OPCODES.CLOSE;
return RpcMessage.serialize(opcode, {code, message});
}
static deserialize(buff) {
const opcode = buff.readInt32LE(0);
const msgLen = buff.readInt32LE(4);
if (buff.length < (msgLen + 8)) {
return null;
}
const msg = buff.toString('utf-8', 8, msgLen + 8);
try {
return {opcode, data: JSON.parse(msg)};
} catch(e) {
console.log(`failed to parse "${msg}"`);
console.error(e);
return {};
}
}
};
module.exports = {OPCODES, PipePath, RpcMessage};