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<?php
class sspmod_core_ModuleDefinition {
public $def;
private static $cache;
private function __construct($def) {
$this->def = $def;
$this->requireValidIdentifier();
}
public static function validId($id) {
return preg_match('|^[a-zA-Z_]+$|', $id);
}
public static function isDefined($id) {
$config = SimpleSAML_Configuration::getConfig('config.php');
$basedir = $config->getBaseDir();
$filename = $basedir . 'modules/' . $id . '/definition.json';
return (file_exists($filename));
}
public static function load($id, $force = NULL) {
if (isset($cache[$id])) return $cache[$id];
if (self::validId($id)) {
$config = SimpleSAML_Configuration::getConfig('config.php');
$basedir = $config->getBaseDir();
$filename = $basedir . 'modules/' . $id . '/definition.json';
if (!file_exists($filename))
throw new Exception('Could not read definition file for module [' . $id . '] : ' . $filename);
$defraw = file_get_contents($filename);
$def = json_decode($defraw, TRUE);
} elseif(preg_match('|^http(s)?://.*$|', $id)) {
$defraw = file_get_contents($id);
$def = json_decode($defraw, TRUE);
} else {
throw new Exception('Could not resolve [' . $id . '] as URL nor module identifier.');
}
$cache[$id] = new sspmod_core_ModuleDefinition($def);
if (isset($force)) {
if ($force === 'local') {
if(preg_match('|^http(s)?://.*$|', $id)) {
return self::load($def['id']);
}
} elseif($force === 'remote') {
if (self::validId($id)) {
if (!isset($def['definition']))
throw new Exception('Could not load remote definition file for module [' . $id . ']');
return self::load($def['definition']);
}
}
}
return $cache[$id];
}
private function requireValidIdentifier() {
if (!isset($this->def['id']))
throw new Exception('Missing [id] value in module definition');
if (!preg_match('|^[a-zA-Z_]+$|', $this->def['id']))
throw new Exception('Illegal characters in [id] in module definition');
}
public function getVersion($branch = NULL) {
if (!isset($this->def['access'])) throw new Exception('Missing [access] statement in module definition');
if (!isset($this->def['branch'])) throw new Exception('Missing [branch] statement in module definition');
if (is_null($branch)) $branch = $this->def['branch'];
if (!isset($this->def['access'][$branch])) throw new Exception('Missing [access] information for branch [' . var_export($branch, TRUE) . ']');
if (!isset($this->def['access'][$branch]['version'])) throw new Exception('Missing version information in [access] in branch [' . var_export($branch, TRUE) . ']');
return $this->def['access'][$branch]['version'];
}
public function alwaysUpdate($branch = NULL) {
$access = $this->getAccess($branch);
if ($access['type'] === 'svn') return TRUE;
return FALSE;
}
public function getBranch($branch = NULL) {
if (!isset($this->def['branch'])) throw new Exception('Missing [branch] statement in module definition');
if (is_null($branch)) $branch = $this->def['branch'];
return $branch;
}
public function updateExists($branch = NULL) {
$branch = $this->getBranch($branch);
$localDef = self::load($this->def['id'], 'local');
$thisVersion = $localDef->getVersion($branch);
$remoteDef = self::load($this->def['definition'], 'remote');
$remoteVersion = $remoteDef->getVersion($branch);
#echo ' Comparing versions local [' . $thisVersion . '] and remote [' . $remoteVersion . ']' . "\n";
return version_compare($remoteVersion, $thisVersion, '>');
}
public function getAccess($branch = NULL) {
if (!isset($this->def['access'])) throw new Exception('Missing [access] statement in module definition');
if (!isset($this->def['branch'])) throw new Exception('Missing [branch] statement in module definition');
if (is_null($branch)) $branch = $this->def['branch'];
if (!isset($this->def['access'][$branch])) throw new Exception('Missing [access] information for branch [' . var_export($branch, TRUE) . ']');
return $this->def['access'][$branch];
}
}
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