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auto-update.js
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auto-update.js
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var Hipchat = require('node-hipchat'),
path = require("path"),
assert = require("assert"),
fs = require("fs-extra"),
glob = require("glob"),
_ = require('lodash'),
request = require("superagent"),
async = require("async"),
tarball = require('tarball-extract'),
colors = require('colors')
colors.setTheme({
prompt: 'cyan',
info: 'grey',
success: 'green',
warn: 'yellow',
error: 'red'
});
var HC = new Hipchat(process.env.HIPCHAT);
var hipchat = {
message: function(color, message) {
if (process.env.HIPCHAT) {
var params = {
room: 165440,
from: 'Auto Update',
message: message,
color: color,
notify: 0
};
HC.postMessage(params, function(data) {});
} else {
console.log('No Hipchat API Key'.warn);
}
}
};
hipchat.message('gray', 'Auto Update Started');
var newVersionCount = 0;
var parse = function (json_file, ignore_missing, ignore_parse_fail) {
var content;
try {
content = fs.readFileSync(json_file, 'utf8');
} catch (err1) {
if (!ignore_missing) {
assert.ok(0, json_file + " doesn't exist!");
}
return null;
}
try {
return JSON.parse(content);
} catch (err2) {
if (!ignore_parse_fail) {
//assert.ok(0, json_file + " failed to parse");
}
return null;
}
}
var reEscape = function(s){
return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
}
/**
* Check if an npmFileMap object contains any path which are not normalized, and thus could allow access to parent dirs
* @param pkg
* @returns {*}
*/
var isValidFileMap = function(pkg){
var isValidPath = function(p){
if(p !== null){ //don't allow parent dir access, or tricky paths
p = p.replace(/\/+/g, '/'); //dont penalize for consequtive path seperators
return p === path.normalize(p);
}
return false
};
if(pkg && pkg.npmFileMap){
return _.every(pkg.npmFileMap, function(fileSpec){
if(isValidPath(fileSpec.basePath || "/")){
return _.every(fileSpec.files, isValidPath);
}
return false;
});
}
return false
};
var error = function(msg, name){
var err = new Error(msg);
err.name = name;
console.log(msg.error);
hipchat.message('red', msg);
return err;
}
error.PKG_NAME = 'BadPackageName'
error.FILE_PATH = 'BadFilePath'
/**
* returns a fucntion that takes N args, where each arg is a path that must not outside of libPath.
* returns true if all paths are within libPath, else false
*/
var isAllowedPathFn = function(libPath){ //is path within the lib dir? if not, they shouldnt be writing/reading there
libPath = path.normalize(libPath || "/");
return function(){
var paths = 1 <= arguments.length ? [].slice.call(arguments, 0) : [];
var re = new RegExp("^"+reEscape(libPath));
return _.every(paths, function(p) {
p = path.normalize(p);
return p.match(re);
});
}
};
var invalidNpmName = function(name){
return !!~name.indexOf(".."); //doesnt contain
}
/**
* Attempt to update the npmFileMap from extracted package.json, then using npmFileMap move required files to libPath/../
* If the npmFileMap tries to modify files outside of libPath, dont let it!
* @param pkg
* @param libPath = root folder for extracted lib
* @returns {Array} = array of security related errors triggered during operation.
*/
var processNewVersion = function(pkg, version){
//sometimes the tar is extracted to a dir that isnt called 'package' - get that dir via glob
var extractLibPath = glob.sync(getPackageTempPath(pkg, version)+"/*/")[0];
if(!extractLibPath){
//even more rarely, the tar doesnt seem to get extracted at all.. which is probably a bug in that lib.
var msg = pkg.npmName + "@" + version + " - never got extracted! This problem usually goes away on next run. Couldnt find extract dir here: " + getPackageTempPath(pkg, version);
console.log(msg.error);
return;
}
var libPath = getPackagePath(pkg, version)
var isAllowedPath = isAllowedPathFn(extractLibPath);
var newPath = path.join(libPath, 'package.json')
if(false && fs.existsSync(newPath)){ //turn this off for now
var newPkg = parse(newPath);
if(isValidFileMap(newPkg)){
pkg.npmFileMap = newPkg.npmFileMap;
}
}
var npmFileMap = pkg.npmFileMap;
var errors = [];
var updated = false;
_.each(npmFileMap, function(fileSpec) {
var basePath = fileSpec.basePath || "";
_.each(fileSpec.files, function(file) {
var libContentsPath = path.normalize(path.join(extractLibPath, basePath));
if(!isAllowedPath(libContentsPath)){
errors.push(error(pkg.npmName+" contains a malicious file path: "+libContentsPath, error.FILE_PATH));
return
}
var files = glob.sync(path.join(libContentsPath, file));
var copyPath = path.join(libPath, basePath)
if(files.length == 0){
//usually old versions have this problem
var msg = (pkg.npmName + "@" + version + " - couldnt find file in npmFileMap.") + (" Doesnt exist: " + path.join(libContentsPath, file)).info;
console.log(msg);
}
_.each(files, function(extractFilePath) {
if(extractFilePath.match(/(dependencies|\.zip\s*$)/i)){
return;
}
var copyPart = path.relative(libContentsPath, extractFilePath);
var copyPath = path.join(libPath, copyPart)
fs.mkdirsSync(path.dirname(copyPath))
fs.renameSync(extractFilePath, copyPath);
updated = true;
});
});
});
if(updated){
newVersionCount++;
var libPatha =path.normalize(path.join(__dirname, 'ajax', 'libs', pkg.name, 'package.json'));
console.log('------------'.red, libPatha.green);
pkg.version = version;
fs.writeFileSync(libPatha, JSON.stringify(pkg, null, 2) + '\n', 'utf8');
}
return errors;
}
var getPackageTempPath = function(pkg, version){
return path.normalize(path.join(__dirname, 'temp', pkg.name, version))
}
var getPackagePath = function(pkg, version){
return path.normalize(path.join(__dirname, 'ajax', 'libs', pkg.name, version));
}
/**
* download and extract a tarball for a single npm version, get the files in npmFileMap and delete the rest
* @param pkg
* @param tarballUrl
* @param version
* @param cb
* @returns {*}
*/
var updateLibraryVersion = function(pkg, tarballUrl, version, cb) {
if(invalidNpmName(pkg.name)){
return cb(error(pkg.npmName+" has a malicious package name:"+ pkg.name, error.PKG_NAME));
}
var extractLibPath = getPackageTempPath(pkg, version);
var libPath = getPackagePath(pkg, version);
if(!fs.existsSync(libPath)) {
fs.mkdirsSync(extractLibPath);
var url = tarballUrl;
var downloadFile = path.join(extractLibPath, 'dist.tar.gz');
tarball.extractTarballDownload(url , downloadFile, extractLibPath, {}, function(err, result) {
if(fs.existsSync(downloadFile)){
processNewVersion(pkg, version);
var msg = "Do not have version " + version + " of " + pkg.npmName;
console.log(msg.warn);
} else {
var msg = "error downloading " + version + " of " + pkg.npmName + " it didnt exist: " + result + err;
console.log(msg.error);
}
cb()
});
} else {
cb()
}
};
/**
* grab all versions of a lib that has an 'npmFileMap' and 'npmName' in its package.json
* @param pkg
* @param tarballUrl
* @param cb
*/
var updateLibrary = function (pkg, cb) {
if(!isValidFileMap(pkg)){
var msg = pkg.npmName.error + " has a malicious npmFileMap";
console.log(msg.warn);
hipchat.message('red', pkg.npmName+" has a malicious npmFileMap: "+ JSON.stringify(pkg.npmFileMap));
return cb(null);
}
var msg = 'Checking versions for ' + pkg.npmName;
console.log(msg);
request.get('http://registry.npmjs.org/' + pkg.npmName, function(result) {
async.eachLimit(_.pairs(result.body.versions), maxWorker, function(p, cb){
var data = p[1];
var version = p[0];
updateLibraryVersion(pkg, data.dist.tarball, version, cb)
}, function(err){
var msg = 'Library finished' + (err ? ' ' + err.error : '');
console.log(msg);
cb(null);
});
});
}
exports.run = function(){
fs.removeSync(path.join(__dirname, 'temp'))
process.on('uncaughtException', function(){
fs.removeSync(path.join(__dirname, 'temp'))
})
console.log('Looking for npm enabled libraries...');
// load up those files
var packages = glob.sync("./ajax/libs/*/package.json");
packages = _(packages).map(function (pkg) {
var parsedPkg = parse(pkg);
return (parsedPkg.npmName && parsedPkg.npmFileMap) ? parsedPkg : null;
}).compact().value();
hipchat.message('green', 'Found ' + packages.length + ' npm enabled libraries');
var msg = 'Found ' + packages.length + ' npm enabled libraries';
console.log(msg.prompt);
async.eachLimit(packages, maxWorker, updateLibrary, function(err) {
var msg = 'Auto Update Completed - ' + newVersionCount + ' versions were updated';
console.log(msg.prompt);
hipchat.message('green', 'Auto Update Completed - ' + newVersionCount + ' versions were updated');
fs.removeSync(path.join(__dirname, 'temp'))
});
}
exports.updateLibrary = updateLibrary;
exports.updateLibraryVersion = updateLibraryVersion;
exports.processNewVersion = processNewVersion;
exports.error = error;
exports.isAllowedPathFn = isAllowedPathFn;
exports.isValidFileMap = isValidFileMap;
exports.invalidNpmName = invalidNpmName;
var args = process.argv.slice(2);
if(args.length > 0 && args[0] == 'run'){
maxWorker = (args[1] == 'serial') ? 1 : 8;
exports.run()
} else {
console.log('to start, pass the "run" arg'.prompt)
}