slug = $slug;
$this->localVersion = $this->remoteVersion = -1;
if (!class_exists('ZipArchive')) {
$msg = "This application cannot update itself because your PHP does not have ZIP support. Please update your application using the following steps.";
$pluginLink = "";
$uploadLink = "";
$workAround = "- Deactivate and delete your on the $pluginLink. If you do not delete the plugin first, the next step will fail because WordPress will refuse to overwrite the existing plugin folder.
- Install the plugin by uploading the zip file on the $uploadLink.
- Activate the plugin and you are all set.
";
$msg .= $workAround;
echo '";
}
}
function __destruct() {
}
function Updater($slug) {
if (version_compare(PHP_VERSION, "5.0.0", "<")) {
$this->__construct($slug);
register_shutdown_function(array($this, "__destruct"));
}
}
function getLocalVersion() {
if ($this->localVersion < 0) {
$readme_file = "../readme.txt";
$readme_text = file_get_contents($readme_file);
$lines = explode("\n", $readme_text);
$needle = "Stable tag:";
foreach ($lines as $line) {
if (strpos($line, $needle) > -1) {
$this->localVersion = trim(str_replace($needle, "", $line));
break;
}
}
}
return $this->localVersion;
}
function getRemoteVersion() {
if ($this->remoteVersion < 0) {
if (empty($this->data)) {
$slug = $this->slug;
$this->data = unserialize(gzinflate(file_get_contents(self::CDN . "/plugins/$slug.dat")));
}
if (!empty($this->data)) {
$this->remoteVersion = $this->data->version;
}
}
return $this->remoteVersion;
}
function isOld() {
$localVersion = (float) $this->getLocalVersion();
$remoteVersion = (float) $this->getRemoteVersion();
return $remoteVersion > $localVersion;
}
function getUpdateText() {
$data = $this->data;
$localVersion = $this->getLocalVersion();
$remoteVersion = $this->getRemoteVersion();
$name = $data->name;
if ($this->isOld()) {
$text = "You are using $name {$localVersion}. The current version is {$remoteVersion}. Click here to download the update.";
}
else {
$text = "You are using $name {$localVersion}, which is the latest version available. Please visit this page periodically to check for updates.";
}
return $text;
}
static function zip($source, $destination) {
$zip = new ZipArchive();
if (!$zip->open($destination, ZIPARCHIVE::CREATE)) {
return false;
}
$source = str_replace('\\', '/', realpath($source));
if (is_dir($source) === true) {
$files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST);
foreach ($files as $file) {
$file = str_replace('\\', '/', $file);
// Ignore "." and ".." folders
if (in_array(substr($file, strrpos($file, '/') + 1), array('.', '..'))) {
continue;
}
$file = realpath($file);
if (is_dir($file) === true) {
$zip->addEmptyDir(str_replace($source . '/', '', $file . '/'));
}
else if (is_file($file) === true) {
$zip->addFromString(str_replace($source . '/', '', $file), file_get_contents($file));
}
}
}
else if (is_file($source) === true) {
$zip->addFromString(basename($source), file_get_contents($source));
}
return $zip->close();
}
function backup() { // TODO: Test this method and use it from admin.php
$zipFile = tempnam(sys_get_temp_dir(), 'zip');
$toZip = realpath('../..');
$base = basename($toZip);
if (!self::zip($toZip, $zipFile)) {
echo "Failed to write files to zip\n";
}
else {
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename=' . $base . '.zip');
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: ' . filesize($zipFile));
@ob_clean(); // Don't let it throw any notices, which will mess up the zip file
flush();
readfile($zipFile);
@unlink($zipFile);
}
}
}
}