/**
*
* @param string $referenceUrl
* @param string $requestedUrl
* @param bool $requestedUrlIsDir
* @return bool
*/
protected static function impliesUrl($referenceUrl, $requestedUrl)
{
$refUrlParts = AdvancedPathLib::parse_url($referenceUrl);
$requestedUrlParts = AdvancedPathLib::parse_url($requestedUrl);
// schemes must match
if ($refUrlParts['scheme'] != $requestedUrlParts['scheme']) {
return false;
}
// hosts must match (except if reference host is "*")
// TODO: add ability to provide a partial host (e.g. "*.eyeos.org")
if (isset($refUrlParts['host'])) {
if ($refUrlParts['host'] != self::WILD_CHAR) {
if (!isset($requestedUrlParts['host']) || $refUrlParts['host'] != $requestedUrlParts['host']) {
return false;
}
}
}
// initialize reference URL
$referenceIsDirectory = false;
$referenceIsRecursive = false;
$refCanonicalPath = AdvancedPathLib::getCanonicalPath($refUrlParts['path']);
//var_dump('$refCanonicalPath: ' . $refCanonicalPath);
// analyze reference URL (directory? recursive?)
$length = utf8_strlen($refCanonicalPath);
$lastChar = $length > 0 ? utf8_substr($refCanonicalPath, -1) : 0;
$lastCharButOneIdx = $length > 0 ? utf8_substr($refCanonicalPath, -2, 1) : 0;
if ($lastChar == self::RECURSIVE_CHAR && $lastCharButOneIdx == '/') {
$referenceIsDirectory = true;
$referenceIsRecursive = true;
$refCanonicalPath = utf8_substr($refCanonicalPath, 0, -1);
} elseif ($lastChar == self::WILD_CHAR && $lastCharButOneIdx == '/') {
$referenceIsDirectory = true;
$referenceIsRecursive = utf8_substr($refCanonicalPath, 0, -1);
}
// initialize requested URL
$canonicalPath = AdvancedPathLib::getCanonicalPath($requestedUrlParts['path']);
//var_dump($canonicalPath . ' ### ' . $refCanonicalPath);
//var_dump('refIsDir: ' . ($referenceIsDirectory ? 'true' : 'false'));
//var_dump('refIsRecursive: ' . ($referenceIsRecursive ? 'true' : 'false'));
// check implication
$implies = false;
if ($referenceIsDirectory) {
if ($referenceIsRecursive) {
$implies = utf8_strlen($canonicalPath) > utf8_strlen($refCanonicalPath) && ($canonicalPath == $refCanonicalPath || utf8_strpos($canonicalPath, $refCanonicalPath) === 0);
} else {
$lastSeparatorIdx = utf8_strrpos($canonicalPath, '/');
if ($lastSeparatorIdx === false) {
$implies = false;
} else {
$implies = utf8_strlen($refCanonicalPath) == $lastSeparatorIdx + 1 && utf8_substr($refCanonicalPath, 0, $lastSeparatorIdx + 1) == utf8_substr($canonicalPath, 0, $lastSeparatorIdx + 1);
}
}
} else {
$implies = $refCanonicalPath == $canonicalPath;
}
//var_dump('$implies= ' . ($implies? 'true' : 'false'));
return $implies;
}
