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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>service.js - Documentation</title>
<script src="scripts/prettify/prettify.js"></script>
<script src="scripts/prettify/lang-css.js"></script>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="styles/prettify.css">
<link type="text/css" rel="stylesheet" href="styles/jsdoc.css">
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<body>
<input type="checkbox" id="nav-trigger" class="nav-trigger" />
<label for="nav-trigger" class="navicon-button x">
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</label>
<label for="nav-trigger" class="overlay"></label>
<nav>
<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="Git.html">Git</a><ul class='methods'><li data-type='method'><a href="Git.html#.close">close</a></li><li data-type='method'><a href="Git.html#.create">create</a></li><li data-type='method'><a href="Git.html#.exists">exists</a></li><li data-type='method'><a href="Git.html#.handle">handle</a></li><li data-type='method'><a href="Git.html#.list">list</a></li><li data-type='method'><a href="Git.html#.listen">listen</a></li><li data-type='method'><a href="Git.html#.mkdir">mkdir</a></li></ul></li><li><a href="HttpDuplex.html">HttpDuplex</a><ul class='methods'><li data-type='method'><a href="HttpDuplex.html#addTrailers">addTrailers</a></li><li data-type='method'><a href="HttpDuplex.html#cork">cork</a></li><li data-type='method'><a href="HttpDuplex.html#destroy">destroy</a></li><li data-type='method'><a href="HttpDuplex.html#end">end</a></li><li data-type='method'><a href="HttpDuplex.html#getHeader">getHeader</a></li><li data-type='method'><a href="HttpDuplex.html#pause">pause</a></li><li data-type='method'><a href="HttpDuplex.html#removeHeader">removeHeader</a></li><li data-type='method'><a href="HttpDuplex.html#resume">resume</a></li><li data-type='method'><a href="HttpDuplex.html#setDefaultEncoding">setDefaultEncoding</a></li><li data-type='method'><a href="HttpDuplex.html#setEncoding">setEncoding</a></li><li data-type='method'><a href="HttpDuplex.html#setHeader">setHeader</a></li><li data-type='method'><a href="HttpDuplex.html#uncork">uncork</a></li><li data-type='method'><a href="HttpDuplex.html#write">write</a></li><li data-type='method'><a href="HttpDuplex.html#writeContinue">writeContinue</a></li><li data-type='method'><a href="HttpDuplex.html#writeHead">writeHead</a></li><li data-type='method'><a href="HttpDuplex.html#writeHeader">writeHeader</a></li></ul></li><li><a href="Service.html">Service</a><ul class='methods'><li data-type='method'><a href="Service.html#.accept">accept</a></li><li data-type='method'><a href="Service.html#.reject">reject</a></li></ul></li></ul><h3>Modules</h3><ul><li><a href="module-lib_util.html">lib/util</a><ul class='methods'><li data-type='method'><a href="module-lib_util.html#~basicAuth">basicAuth</a></li><li data-type='method'><a href="module-lib_util.html#~createAction">createAction</a></li><li data-type='method'><a href="module-lib_util.html#~infoResponse">infoResponse</a></li><li data-type='method'><a href="module-lib_util.html#~noCache">noCache</a></li><li data-type='method'><a href="module-lib_util.html#~onExit">onExit</a></li><li data-type='method'><a href="module-lib_util.html#~parseGitName">parseGitName</a></li><li data-type='method'><a href="module-lib_util.html#~serviceRespond">serviceRespond</a></li></ul></li></ul><h3>Events</h3><ul><li><a href="HttpDuplex.html#event:close">close</a></li><li><a href="HttpDuplex.html#event:data">data</a></li><li><a href="HttpDuplex.html#event:drain">drain</a></li><li><a href="HttpDuplex.html#event:end">end</a></li><li><a href="HttpDuplex.html#event:error">error</a></li><li><a href="Git.html#event:fetch">fetch</a></li><li><a href="Git.html#event:head">head</a></li><li><a href="Git.html#event:info">info</a></li><li><a href="Git.html#event:push">push</a></li><li><a href="Git.html#event:tag">tag</a></li></ul><h3>Global</h3><ul><li><a href="global.html#getType">getType</a></li></ul>
</nav>
<div id="main">
<h1 class="page-title">service.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>const through = require('through');
const HttpDuplex = require('./http-duplex');
const zlib = require('zlib');
const { spawn } = require('child_process');
const headerRE = {
'receive-pack': '([0-9a-fA-F]+) ([0-9a-fA-F]+) refs\/(heads|tags)\/(.*?)( |00|\u0000)|^(0000)$', // eslint-disable-line
'upload-pack': '^\\S+ ([0-9a-fA-F]+)'
};
class Service extends HttpDuplex {
/**
* Handles invoking the git-*-pack binaries
* @class Service
* @extends HttpDuplex
* @param {Object} opts - options to bootstrap the service object
* @param {http.IncomingMessage } req - http request object
* @param {http.ServerResponse} res - http response
*/
constructor(opts, req, res) {
super(req, res);
var data = '';
var self = this;
this.status = 'pending';
this.repo = opts.repo;
this.service = opts.service;
this.cwd = opts.cwd;
var buffered = through().pause();
// stream needed to receive data after decoding, but before accepting
var ts = through();
var decoder = {
'gzip': () => zlib.createGunzip(),
'deflate': () => zlib.createDeflate()
}[req.headers['content-encoding']];
if (decoder) {
// data is compressed with gzip or deflate
req.pipe(decoder()).pipe(ts).pipe(buffered);
} else {
// data is not compressed
req.pipe(ts).pipe(buffered);
}
if(req.headers["authorization"]) {
const tokens = req.headers["authorization"].split(" ");
if (tokens[0] === "Basic") {
const splitHash = new Buffer(tokens[1], 'base64').toString('utf8').split(":");
this.username = splitHash.shift();
}
}
ts.once('data', function onData(buf) {
data += buf;
var ops = data.match(new RegExp(headerRE[self.service], 'gi'));
if (!ops) return;
data = undefined;
ops.forEach(function(op) {
var type;
var m = op.match(new RegExp(headerRE[self.service]));
if (self.service === 'receive-pack') {
self.last = m[1];
self.commit = m[2];
if (m[3] == 'heads') {
type = 'branch';
self.evName = 'push';
} else {
type = 'version';
self.evName = 'tag';
}
var headers = {
last: self.last,
commit: self.commit
};
headers[type] = self[type] = m[4];
self.emit('header', headers);
} else if (self.service === 'upload-pack') {
self.commit = m[1];
self.evName = 'fetch';
self.emit('header', {
commit: self.commit
});
}
});
});
self.once('accept', function onAccept() {
process.nextTick(function() {
var cmd = ['git-' + opts.service, '--stateless-rpc', opts.cwd];
var ps = spawn(cmd[0], cmd.slice(1));
ps.on('error', function(err) {
self.emit('error', new Error(`${err.message} running command ${cmd.join(' ')}`));
});
self.emit('service', ps);
var respStream = through(function(c) {
if (self.listeners('response').length === 0) return this.queue(c);
// prevent git from sending the close signal
if (c.length === 4 && c.toString() === '0000') return;
this.queue(c);
}, function() {
if (self.listeners('response').length > 0) return;
this.queue(null);
});
self.emit('response', respStream, function endResponse() {
res.queue(new Buffer('0000'));
res.queue(null);
});
ps.stdout.pipe(respStream).pipe(res);
buffered.pipe(ps.stdin);
buffered.resume();
ps.on('exit', self.emit.bind(self, 'exit'));
});
});
self.once('reject', function onReject(code, msg) {
res.statusCode = code;
res.end(msg);
});
}
/**
* reject request in flight
* @method reject
* @memberof Service
* @param {Number} code - http response code
* @param {String} msg - message that should be displayed on teh client
*/
reject(code, msg) {
if (this.status !== 'pending') return;
if (msg === undefined && typeof code === 'string') {
msg = code;
code = 500;
}
this.status = 'rejected';
this.emit('reject', code || 500, msg);
}
/**
* accepts request to access resource
* @method accept
* @memberof Service
*/
accept() {
if (this.status !== 'pending') return;
this.status = 'accepted';
this.emit('accept');
}
}
module.exports = Service;
</code></pre>
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