/**
* Returns whether the specified URL is a valid Github URL.
* Used for validating the input of the app/theme installer.
* Also returns true if it's a link to a zip file.
*/
function github_is_valid_url($url)
{
if (github_parse_url($url) === false) {
if (github_is_zip($url)) {
return true;
}
return false;
}
return true;
}
/**
* Requires the Github reponsitory link (e.g., git://github.com/user/project.git).
*/
public static function install($source)
{
list($user, $project) = github_parse_url($source);
$github = new GithubFetcher($user, $project);
$tree = $github->tree();
// Get config and verify it
$found = false;
$conf = false;
foreach ($tree as $item) {
if ($item->path === 'elefant.json') {
$data = $github->get($item);
if (!$data) {
self::$error = i18n_get('Unable to fetch configuration file.');
return false;
}
$conf = json_decode($data);
if (!$conf) {
self::$error = i18n_get('Verification failed: Invalid configuration file.');
return false;
}
if (!self::verify($conf)) {
// self::$error already set by verify()
return false;
}
$found = true;
break;
}
}
if (!$found) {
self::$error = i18n_get('Configuration file not found.');
return false;
}
// Create new install folder
if ($conf->type === 'app') {
$dest = 'apps/' . $conf->folder;
if (!mkdir($dest)) {
self::$error = i18n_get('Unable to write to apps folder.');
return false;
}
} else {
$dest = 'layouts/' . $conf->folder;
if (!mkdir($dest)) {
self::$error = i18n_get('Unable to write to layouts folder.');
return false;
}
}
// This may take some time for larger apps
set_time_limit(120);
// Build files from tree
foreach ($tree as $n => $item) {
if ($item->type === 'tree') {
mkdir($dest . '/' . $item->path);
} else {
$data = $github->get($item);
if ($data === false) {
self::$error = i18n_get('Unable to fetch file') . ' ' . $item->path;
rmdir_recursive($dest);
return false;
}
file_put_contents($dest . '/' . $item->path, $data);
// Create our own rate-limiting to be nice with Github
$data = null;
if ($n % 20 === 0) {
sleep(1);
}
}
}
chmod_recursive($dest, 0777);
return $conf;
}
