/**
* Tries to parse the given file as a KeePass XML key file.
* @param string $filename The name of the file to parse.
* @return boolean Returns true in case of success, false otherwise.
*/
private function tryParseXML($filename)
{
$xml = new XMLStackReader();
if (!$xml->open($filename)) {
return false;
}
$parents = array(self::XML_ROOT, self::XML_KEY, self::XML_DATA);
if ($xml->readUntilParentsBe($parents)) {
if ($xml->isTextInside()) {
$this->hash = base64_decode($xml->r->value);
$xml->close();
return true;
}
}
$xml->close();
return false;
}
/**
* Tries to find a child node named $name in the given array $array of nodes
* (assumed to be returned by the method $xml->readInnerXML()), and returns
* true in case of success, or false otherwise. If the node is found,
* $result will contain what is inside :
* - either null if the nodes contains nothing
* - either a string if the node contains a text node
* - either the subtree (as an array) of the node
* @param array $array
* @param string $name
* @param mixed $result
* @return boolean
*/
private function tryReadTextValueFromArray($array, $name, &$result)
{
if (XMLStackReader::tryGetChild($array, $name, $result)) {
if ($result[XMLStackReader::INNER] == null) {
$result = null;
} elseif (is_string($result[XMLStackReader::INNER])) {
$a = $result[XMLStackReader::ATTRIBUTES];
if ($a != null && array_key_exists(self::XML_PROTECTED, $a) && $a[self::XML_PROTECTED] == self::XML_PROTECTED_TRUE) {
$v = base64_decode($result[XMLStackReader::INNER]);
$result = $this->randomStream->dencrypt($v);
} else {
$result = $result[XMLStackReader::INNER];
}
}
return true;
}
return false;
}