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'use strict';
const common = require('../common');
const assert = require('assert');
const fs = require('fs');
const http = require('http');
const path = require('path');
const spawn = require('child_process').spawn;
const url = require('url');
const DEBUG = false;
const TIMEOUT = 15 * 1000;
const mainScript = path.join(common.fixturesDir, 'loop.js');
function send(socket, message, id, callback) {
const msg = JSON.parse(JSON.stringify(message)); // Clone!
msg['id'] = id;
if (DEBUG)
console.log('[sent]', JSON.stringify(msg));
const messageBuf = Buffer.from(JSON.stringify(msg));
const wsHeaderBuf = Buffer.allocUnsafe(16);
wsHeaderBuf.writeUInt8(0x81, 0);
let byte2 = 0x80;
const bodyLen = messageBuf.length;
let maskOffset = 2;
if (bodyLen < 126) {
byte2 = 0x80 + bodyLen;
} else if (bodyLen < 65536) {
byte2 = 0xFE;
wsHeaderBuf.writeUInt16BE(bodyLen, 2);
maskOffset = 4;
} else {
byte2 = 0xFF;
wsHeaderBuf.writeUInt32BE(bodyLen, 2);
wsHeaderBuf.writeUInt32BE(0, 6);
maskOffset = 10;
}
wsHeaderBuf.writeUInt8(byte2, 1);
wsHeaderBuf.writeUInt32BE(0x01020408, maskOffset);
for (let i = 0; i < messageBuf.length; i++)
messageBuf[i] = messageBuf[i] ^ (1 << (i % 4));
socket.write(
Buffer.concat([wsHeaderBuf.slice(0, maskOffset + 4), messageBuf]),
callback);
}
function parseWSFrame(buffer, handler) {
if (buffer.length < 2)
return 0;
assert.strictEqual(0x81, buffer[0]);
let dataLen = 0x7F & buffer[1];
let bodyOffset = 2;
if (buffer.length < bodyOffset + dataLen)
return 0;
if (dataLen === 126) {
dataLen = buffer.readUInt16BE(2);
bodyOffset = 4;
} else if (dataLen === 127) {
dataLen = buffer.readUInt32BE(2);
bodyOffset = 10;
}
if (buffer.length < bodyOffset + dataLen)
return 0;
const message = JSON.parse(
buffer.slice(bodyOffset, bodyOffset + dataLen).toString('utf8'));
if (DEBUG)
console.log('[received]', JSON.stringify(message));
handler(message);
return bodyOffset + dataLen;
}
function tearDown(child, err) {
child.kill();
if (err instanceof Error) {
console.error(err.stack);
process.exit(1);
}
}
function checkHttpResponse(port, path, callback) {
http.get({port, path}, function(res) {
let response = '';
res.setEncoding('utf8');
res
.on('data', (data) => response += data.toString())
.on('end', () => {
let err = null;
let json = undefined;
try {
json = JSON.parse(response);
} catch (e) {
err = e;
err.response = response;
}
callback(err, json);
});
});
}
function makeBufferingDataCallback(dataCallback) {
let buffer = Buffer.alloc(0);
return (data) => {
const newData = Buffer.concat([buffer, data]);
const str = newData.toString('utf8');
const lines = str.split('\n');
if (str.endsWith('\n'))
buffer = Buffer.alloc(0);
else
buffer = Buffer.from(lines.pop(), 'utf8');
for (var line of lines)
dataCallback(line);
};
}
function timeout(message, multiplicator) {
return setTimeout(() => common.fail(message), TIMEOUT * (multiplicator || 1));
}
const TestSession = function(socket, harness) {
this.mainScriptPath = harness.mainScriptPath;
this.mainScriptId = null;
this.harness_ = harness;
this.socket_ = socket;
this.expectClose_ = false;
this.scripts_ = {};
this.messagefilter_ = null;
this.responseCheckers_ = {};
this.lastId_ = 0;
this.messages_ = {};
this.expectedId_ = 1;
this.lastMessageResponseCallback_ = null;
let buffer = Buffer.alloc(0);
socket.on('data', (data) => {
buffer = Buffer.concat([buffer, data]);
let consumed;
do {
consumed = parseWSFrame(buffer, this.processMessage_.bind(this));
if (consumed)
buffer = buffer.slice(consumed);
} while (consumed);
}).on('close', () => assert(this.expectClose_, 'Socket closed prematurely'));
};
TestSession.prototype.scriptUrlForId = function(id) {
return this.scripts_[id];
};
TestSession.prototype.processMessage_ = function(message) {
const method = message['method'];
if (method === 'Debugger.scriptParsed') {
const script = message['params'];
const scriptId = script['scriptId'];
const url = script['url'];
this.scripts_[scriptId] = url;
if (url === mainScript)
this.mainScriptId = scriptId;
}
this.messagefilter_ && this.messagefilter_(message);
const id = message['id'];
if (id) {
assert.strictEqual(id, this.expectedId_);
this.expectedId_++;
if (this.responseCheckers_[id]) {
assert(message['result'], JSON.stringify(message) + ' (response to ' +
JSON.stringify(this.messages_[id]) + ')');
this.responseCheckers_[id](message['result']);
delete this.responseCheckers_[id];
}
assert(!message['error'], JSON.stringify(message) + ' (replying to ' +
JSON.stringify(this.messages_[id]) + ')');
delete this.messages_[id];
if (id === this.lastId_) {
this.lastMessageResponseCallback_ && this.lastMessageResponseCallback_();
this.lastMessageResponseCallback_ = null;
}
}
};
TestSession.prototype.sendAll_ = function(commands, callback) {
if (!commands.length) {
callback();
} else {
this.lastId_++;
let command = commands[0];
if (command instanceof Array) {
this.responseCheckers_[this.lastId_] = command[1];
command = command[0];
}
if (command instanceof Function)
command = command();
this.messages_[this.lastId_] = command;
send(this.socket_, command, this.lastId_,
() => this.sendAll_(commands.slice(1), callback));
}
};
TestSession.prototype.sendInspectorCommands = function(commands) {
if (!(commands instanceof Array))
commands = [commands];
return this.enqueue((callback) => {
let timeoutId = null;
this.lastMessageResponseCallback_ = () => {
timeoutId && clearTimeout(timeoutId);
callback();
};
this.sendAll_(commands, () => {
timeoutId = setTimeout(() => {
let s = '';
for (const id in this.messages_) {
s += id + ', ';
}
common.fail('Messages without response: ' +
s.substring(0, s.length - 2));
}, TIMEOUT);
});
});
};
TestSession.prototype.createCallbackWithTimeout_ = function(message) {
var promise = new Promise((resolve) => {
this.enqueue((callback) => {
const timeoutId = timeout(message);
resolve(() => {
clearTimeout(timeoutId);
callback();
});
});
});
return () => promise.then((callback) => callback());
};
TestSession.prototype.expectMessages = function(expects) {
if (!(expects instanceof Array)) expects = [ expects ];
const callback = this.createCallbackWithTimeout_(
'Matching response was not received:\n' + expects[0]);
this.messagefilter_ = (message) => {
if (expects[0](message))
expects.shift();
if (!expects.length) {
this.messagefilter_ = null;
callback();
}
};
return this;
};
TestSession.prototype.expectStderrOutput = function(regexp) {
this.harness_.addStderrFilter(
regexp,
this.createCallbackWithTimeout_('Timed out waiting for ' + regexp));
return this;
};
TestSession.prototype.runNext_ = function() {
if (this.task_) {
setImmediate(() => {
this.task_(() => {
this.task_ = this.task_.next_;
this.runNext_();
});
});
}
};
TestSession.prototype.enqueue = function(task) {
if (!this.task_) {
this.task_ = task;
this.runNext_();
} else {
let t = this.task_;
while (t.next_)
t = t.next_;
t.next_ = task;
}
return this;
};
TestSession.prototype.disconnect = function(childDone) {
return this.enqueue((callback) => {
this.expectClose_ = true;
this.harness_.childInstanceDone =
this.harness_.childInstanceDone || childDone;
this.socket_.end();
console.log('[test]', 'Connection terminated');
callback();
});
};
TestSession.prototype.testHttpResponse = function(path, check) {
return this.enqueue((callback) =>
checkHttpResponse(this.harness_.port, path, (err, response) => {
check.call(this, err, response);
callback();
}));
};
const Harness = function(port, childProcess) {
this.port = port;
this.mainScriptPath = mainScript;
this.stderrFilters_ = [];
this.process_ = childProcess;
this.childInstanceDone = false;
this.returnCode_ = null;
this.running_ = true;
childProcess.stdout.on('data', makeBufferingDataCallback(
(line) => console.log('[out]', line)));
childProcess.stderr.on('data', makeBufferingDataCallback((message) => {
const pending = [];
console.log('[err]', message);
for (const filter of this.stderrFilters_)
if (!filter(message)) pending.push(filter);
this.stderrFilters_ = pending;
}));
childProcess.on('exit', (code, signal) => {
assert(this.childInstanceDone, 'Child instance died prematurely');
this.returnCode_ = code;
this.running_ = false;
});
};
Harness.prototype.addStderrFilter = function(regexp, callback) {
this.stderrFilters_.push((message) => {
if (message.match(regexp)) {
callback();
return true;
}
});
};
Harness.prototype.run_ = function() {
setImmediate(() => {
this.task_(() => {
this.task_ = this.task_.next_;
if (this.task_)
this.run_();
});
});
};
Harness.prototype.enqueue_ = function(task) {
if (!this.task_) {
this.task_ = task;
this.run_();
} else {
let chain = this.task_;
while (chain.next_)
chain = chain.next_;
chain.next_ = task;
}
return this;
};
Harness.prototype.testHttpResponse = function(path, check) {
return this.enqueue_((doneCallback) => {
checkHttpResponse(this.port, path, (err, response) => {
check.call(this, err, response);
doneCallback();
});
});
};
Harness.prototype.wsHandshake = function(devtoolsUrl, tests, readyCallback) {
http.get({
port: this.port,
path: url.parse(devtoolsUrl).path,
headers: {
'Connection': 'Upgrade',
'Upgrade': 'websocket',
'Sec-WebSocket-Version': 13,
'Sec-WebSocket-Key': 'key=='
}
}).on('upgrade', (message, socket) => {
const session = new TestSession(socket, this);
if (!(tests instanceof Array))
tests = [tests];
function enqueue(tests) {
session.enqueue((sessionCb) => {
if (tests.length) {
tests[0](session);
session.enqueue((cb2) => {
enqueue(tests.slice(1));
cb2();
});
} else {
readyCallback();
}
sessionCb();
});
}
enqueue(tests);
}).on('response', () => common.fail('Upgrade was not received'));
};
Harness.prototype.runFrontendSession = function(tests) {
return this.enqueue_((callback) => {
checkHttpResponse(this.port, '/json/list', (err, response) => {
assert.ifError(err);
this.wsHandshake(response[0]['webSocketDebuggerUrl'], tests, callback);
});
});
};
Harness.prototype.expectShutDown = function(errorCode) {
this.enqueue_((callback) => {
if (this.running_) {
const timeoutId = timeout('Have not terminated');
this.process_.on('exit', (code) => {
clearTimeout(timeoutId);
assert.strictEqual(errorCode, code);
callback();
});
} else {
assert.strictEqual(errorCode, this.returnCode_);
callback();
}
});
};
exports.startNodeForInspectorTest = function(callback) {
const child = spawn(process.execPath,
[ '--inspect', '--debug-brk', mainScript ]);
const timeoutId = timeout('Child process did not start properly', 4);
let found = false;
const dataCallback = makeBufferingDataCallback((text) => {
clearTimeout(timeoutId);
console.log('[err]', text);
if (found) return;
const match = text.match(/Debugger listening on port (\d+)/);
found = true;
child.stderr.removeListener('data', dataCallback);
assert.ok(match, text);
callback(new Harness(match[1], child));
});
child.stderr.on('data', dataCallback);
const handler = tearDown.bind(null, child);
process.on('exit', handler);
process.on('uncaughtException', handler);
process.on('SIGINT', handler);
};
exports.mainScriptSource = function() {
return fs.readFileSync(mainScript, 'utf8');
};