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install.js
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install.js
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// Shamelessly copied from The Obvious Corporation
/*
* This simply fetches the right version of iedriver
*/
'use strict';
var cp = require('child_process');
var fs = require('fs');
var http = require('http');
var kew = require('kew');
var path = require('path');
var url = require('url');
var rimraf = require('rimraf').sync;
var AdmZip = require('adm-zip');
var helper = require('./lib/iedriver');
var ncp = require('ncp');
var npmconf = require('npmconf');
var util = require('util');
var libPath = path.join(__dirname, 'lib', 'bin', 'iedriver');
var downloadUrl = 'http://selenium-release.storage.googleapis.com/2.40/IEDriverServer_';
if (process.arch === 'x64') {
downloadUrl += 'x64_2.40.0.zip';
} else {
downloadUrl += 'Win32_2.40.0.zip';
}
var fileName = downloadUrl.split('/').pop();
function getRequestOptions(proxyUrl) {
if (proxyUrl) {
var options = url.parse(proxyUrl);
options.path = downloadUrl;
options.headers = { Host: url.parse(downloadUrl).host };
// turn basic authorization into proxy-authorization
if (options.auth) {
options.headers['Proxy-Authorization'] = 'Basic ' + new Buffer(options.auth).toString('base64');
delete options.auth;
}
return options;
} else {
return url.parse(downloadUrl);
}
}
function requestBinary(requestOptions, filePath) {
var deferred = kew.defer();
var count = 0;
var notifiedCount = 0;
var outFile = fs.openSync(filePath, 'w');
var client = http.get(requestOptions, function (response) {
var status = response.statusCode;
console.log('Receiving...');
if (status === 200) {
response.addListener('data', function (data) {
fs.writeSync(outFile, data, 0, data.length, null);
count += data.length;
if ((count - notifiedCount) > 800000) {
console.log('Received ' + Math.floor(count / 1024) + 'K...');
notifiedCount = count;
}
});
response.addListener('end', function () {
console.log('Received ' + Math.floor(count / 1024) + 'K total.');
fs.closeSync(outFile);
deferred.resolve(true);
});
} else {
client.abort();
deferred.reject('Error with http request: ' + util.inspect(response.headers));
}
});
return deferred.promise;
}
function extractDownload(filePath, tmpPath) {
var deferred = kew.defer();
var options = {cwd: tmpPath};
rimraf(libPath);
if (filePath.substr(-4) === '.zip') {
console.log('Extracting zip contents');
try {
var zip = new AdmZip(filePath);
zip.extractAllTo(path.dirname(filePath), true);
deferred.resolve(true);
} catch (e) {
console.log(e);
deferred.reject('Error extracting archive ' + e.stack);
}
} else {
console.log('Extracting tar contents (via spawned process)');
cp.execFile('tar', ['jxf', filePath], options, function (err) {
if (err) {
deferred.reject('Error extracting archive ' + err.stack);
} else {
deferred.resolve(true);
}
});
}
return deferred.promise;
}
function copyIntoPlace(tmpPath, targetPath) {
var deferred = kew.defer();
// Look for the extracted directory, so we can rename it.
var files = fs.readdirSync(tmpPath);
for (var i = 0; i < files.length; i++) {
var file = path.join(tmpPath, files[i]);
file = file;
if (fs.statSync(file).isFile() && file.search('zip') === -1) {
targetPath = targetPath.replace('iedriver', 'IEDriverServer');
try {
ncp(file, targetPath, deferred.makeNodeResolver());
} catch (e) {
}
break;
}
}
return deferred.promise;
}
function fixFilePermissions(tmpPath, libPath) {
fs.renameSync(libPath.replace('iedriver', 'IEDriverServer'), libPath.replace('iedriver', 'IEDriverServer.exe'));
}
function mkdir(name) {
var dir = path.dirname(name);
if (!fs.existsSync(dir)) {
fs.mkdirSync(dir);
}
}
npmconf.load(function(err, conf) {
if (err) {
console.log('Error loading npm config');
console.error(err);
process.exit(1);
return;
}
var tmpPath = path.join(conf.get('tmp'), 'iedriver');
var downloadedFile = path.join(tmpPath, fileName);
var promise= kew.resolve(true);
// Start the install.
if (!fs.existsSync(downloadedFile)) {
promise = promise.then(function () {
rimraf(tmpPath);
mkdir(downloadedFile);
console.log('Downlaoading', downloadUrl);
console.log('Saving to', downloadedFile);
return requestBinary(getRequestOptions(conf.get('proxy')), downloadedFile);
});
} else {
console.log('Download already available at', downloadedFile);
}
promise.then(function () {
return extractDownload(downloadedFile, tmpPath);
})
.then(function () {
return copyIntoPlace(tmpPath, libPath);
})
.then(function () {
return fixFilePermissions(tmpPath, libPath);
})
.then(function () {
console.log('Done. IEDriver binary available at', helper.path);
})
.fail(function (err) {
console.error('IEDriver installation failed', err.stack);
process.exit(1);
});
});