/**
* Downloads a package archive from an http URL.
*
* @param string $httpUrl
* @param string $prefix
* @return string path to the dowloaded file
*/
public static function downloadFileFromHttp($httpUrl, $prefix = 'package')
{
$extension = strrchr($httpUrl, '.');
//$newFileName = self::getTemporaryFilename($prefix.'_', $extension);
$newFileName = self::getTemporaryFilename($prefix . '_');
$localFile = new File($newFileName);
// the file to write.
// get proxy
$options = array();
if (PROXY_SERVER_HTTP) {
$options['http']['proxy'] = PROXY_SERVER_HTTP;
}
// first look if php's built-in fopen() is available, and if so, use it.
if (function_exists('fopen') && ini_get('allow_url_fopen')) {
$remoteFile = new File($httpUrl, 'rb', $options);
// the file to read.
// get the content of the remote file and write it to a local file.
while (!$remoteFile->eof()) {
$buffer = $remoteFile->gets(4096);
$localFile->write($buffer);
}
} else {
$port = 80;
$parsedUrl = parse_url($httpUrl);
$host = $parsedUrl['host'];
$path = $parsedUrl['path'];
require_once WCF_DIR . 'lib/system/io/RemoteFile.class.php';
$remoteFile = new RemoteFile($host, $port, 30, $options);
// the file to read.
if (!isset($remoteFile)) {
$localFile->close();
unlink($newFileName);
throw new SystemException("cannot connect to http host '" . $host . "'", 14000);
}
// build and send the http request.
$request = "GET " . $path . (!empty($parsedUrl['query']) ? '?' . $parsedUrl['query'] : '') . " HTTP/1.0\r\n";
$request .= "User-Agent: HTTP.PHP (FileUtil.class.php; WoltLab Community Framework/" . WCF_VERSION . "; " . WCF::getLanguage()->getLanguageCode() . ")\r\n";
$request .= "Accept: */*\r\n";
$request .= "Accept-Language: " . WCF::getLanguage()->getLanguageCode() . "\r\n";
$request .= "Host: " . $host . "\r\n";
$request .= "Connection: Close\r\n\r\n";
$remoteFile->puts($request);
$waiting = true;
$readResponse = array();
// read http response.
while (!$remoteFile->eof()) {
$readResponse[] = $remoteFile->gets();
// look if we are done with transferring the requested file.
if ($waiting) {
if (rtrim($readResponse[count($readResponse) - 1]) == '') {
$waiting = false;
}
} else {
// look if the webserver sent an error http statuscode
// This has still to be checked if really sufficient!
$arrayHeader = array('201', '301', '302', '303', '307', '404');
foreach ($arrayHeader as $code) {
$error = strpos($readResponse[0], $code);
}
if ($error !== false) {
$localFile->close();
unlink($newFileName);
throw new SystemException("file " . $path . " not found at host '" . $host . "'", 14001);
}
// write to the target system.
$localFile->write($readResponse[count($readResponse) - 1]);
}
}
}
$remoteFile->close();
$localFile->close();
return $newFileName;
}
/**
* Sends a request to a remote (update) server.
*
* @param string $url
* @param array $values
* @param array $authData
* @return array $response
*/
protected static function sendRequest($url, $values = array(), $authData = array())
{
// default values
$host = '';
$path = '/';
$port = 80;
$postString = '';
// parse url
$parsedURL = parse_url($url);
if (!empty($parsedURL['host'])) {
$host = $parsedURL['host'];
}
if (!empty($parsedURL['path'])) {
$path = $parsedURL['path'];
}
if (!empty($parsedURL['query'])) {
$postString = $parsedURL['query'];
}
if (!empty($parsedURL['port'])) {
$port = $parsedURL['port'];
}
// connect to server
$options = array();
if (PROXY_SERVER_HTTP) {
$options['http']['proxy'] = PROXY_SERVER_HTTP;
}
require_once WCF_DIR . 'lib/system/io/RemoteFile.class.php';
$remoteFile = new RemoteFile($host, $port, 30, $options);
// Build and send the http request
$request = "POST " . $path . " HTTP/1.0\r\n";
if (isset($authData['authType'])) {
$request .= "Authorization: Basic " . base64_encode($authData['htUsername'] . ":" . $authData['htPassword']) . "\r\n";
}
$request .= "User-Agent: HTTP.PHP (PackageUpdate.class.php; WoltLab Community Framework/" . WCF_VERSION . "; " . WCF::getLanguage()->getLanguageCode() . ")\r\n";
$request .= "Accept: */*\r\n";
$request .= "Accept-Language: " . WCF::getLanguage()->getLanguageCode() . "\r\n";
$request .= "Host: " . $host . "\r\n";
// build post string
foreach ($values as $name => $value) {
if (!empty($postString)) {
$postString .= '&';
}
$postString .= $name . '=' . $value;
}
// send content type and length
$request .= "Content-Type: application/x-www-form-urlencoded\r\n";
$request .= "Content-Length: " . strlen($postString) . "\r\n";
// if it is a POST request, there MUST be a blank line before the POST data, but there MUST NOT be
// another blank line before, and of course there must be another blank line at the end of the request!
$request .= "\r\n";
if (!empty($postString)) {
$request .= $postString . "\r\n";
}
// send close
$request .= "Connection: Close\r\n\r\n";
// send request
$remoteFile->puts($request);
unset($request, $postString);
// define response vars
$header = $content = '';
// fetch the response.
while (!$remoteFile->eof()) {
$line = $remoteFile->gets();
if (rtrim($line) != '') {
$header .= $line;
} else {
break;
}
}
while (!$remoteFile->eof()) {
$content .= $remoteFile->gets();
}
// clean up and return the server's response.
$remoteFile->close();
// get http status code / line
$httpStatusCode = 0;
$httpStatusLine = '';
if (preg_match('%http/\\d\\.\\d (\\d{3})[^\\n]*%i', $header, $match)) {
$httpStatusLine = trim($match[0]);
$httpStatusCode = $match[1];
}
// catch http 301 Moved Permanently
// catch http 302 Found
// catch http 303 See Other
if ($httpStatusCode == 301 || $httpStatusCode == 302 || $httpStatusCode == 303) {
// find location
if (preg_match('/location:([^\\n]*)/i', $header, $match)) {
$location = trim($match[1]);
if ($location != $url) {
return self::sendRequest($location, $values, $authData);
}
}
}
// catch other http codes here
return array('httpStatusLine' => $httpStatusLine, 'httpStatusCode' => $httpStatusCode, 'header' => $header, 'content' => $content);
}
