URINorm.php File Reference

Go to the source code of this file.

Namespaces
	OpenID
	This module contains code for dealing with associations between consumers and servers.

Functions
	Auth_OpenID_getURIPattern ()
	Auth_OpenID_getAuthorityPattern ()
	Auth_OpenID_getEncodedPattern ()
	Auth_OpenID_getURLIllegalCharRE ()
	Auth_OpenID_getUnreserved ()
	Auth_OpenID_getEscapeRE ()
	Auth_OpenID_pct_encoded_replace_unreserved ($mo)
	Auth_OpenID_pct_encoded_replace ($mo)
	Auth_OpenID_remove_dot_segments ($path)
	Auth_OpenID_urinorm ($uri)

Function Documentation

Auth_OpenID_getAuthorityPattern()

Auth_OpenID_getAuthorityPattern

(

)

Definition at line 20 of file URINorm.php.

Referenced by Auth_OpenID_urinorm().

{
    return '/^([^@]*@)?([^:]*)(:.*)?/';
}

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Auth_OpenID_getEncodedPattern()

Auth_OpenID_getEncodedPattern

(

)

Definition at line 25 of file URINorm.php.

Referenced by Auth_OpenID_urinorm().

{
    return '/%([0-9A-Fa-f]{2})/';
}

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Auth_OpenID_getEscapeRE()

Auth_OpenID_getEscapeRE

(

)

Definition at line 68 of file URINorm.php.

References $n, Auth_Yadis_getIPrivateChars(), and Auth_Yadis_getUCSChars().

{
    $parts = array();
    foreach (array_merge(Auth_Yadis_getUCSChars(),
                         Auth_Yadis_getIPrivateChars()) as $pair) {
        list($m, $n) = $pair;
        $parts[] = sprintf("%s-%s", chr($m), chr($n));
    }

    return sprintf('[%s]', implode('', $parts));
}

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Auth_OpenID_getUnreserved()

Auth_OpenID_getUnreserved

(

)

Definition at line 41 of file URINorm.php.

Referenced by Auth_OpenID_pct_encoded_replace_unreserved().

{
    $_unreserved = array();
    for ($i = 0; $i < 256; $i++) {
        $_unreserved[$i] = false;
    }

    for ($i = ord('A'); $i <= ord('Z'); $i++) {
        $_unreserved[$i] = true;
    }

    for ($i = ord('0'); $i <= ord('9'); $i++) {
        $_unreserved[$i] = true;
    }

    for ($i = ord('a'); $i <= ord('z'); $i++) {
        $_unreserved[$i] = true;
    }

    $_unreserved[ord('-')] = true;
    $_unreserved[ord('.')] = true;
    $_unreserved[ord('_')] = true;
    $_unreserved[ord('~')] = true;

    return $_unreserved;
}

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Auth_OpenID_getURIPattern()

Auth_OpenID_getURIPattern

(

)

Definition at line 15 of file URINorm.php.

Referenced by Auth_OpenID_urinorm().

{
    return '&^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?&';
}

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Auth_OpenID_getURLIllegalCharRE()

Auth_OpenID_getURLIllegalCharRE

(

)

Definition at line 36 of file URINorm.php.

Referenced by Auth_OpenID_urinorm().

{
    return "/([^-A-Za-z0-9:\/\?#\[\]@\!\$&'\(\)\*\+,;=\._~\%])/";
}

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Auth_OpenID_pct_encoded_replace()

Auth_OpenID_pct_encoded_replace

(

$mo

)

Definition at line 94 of file URINorm.php.

{
    return chr(intval($mo[1], 16));
}

Auth_OpenID_pct_encoded_replace_unreserved()

Auth_OpenID_pct_encoded_replace_unreserved

(

$mo

)

Definition at line 80 of file URINorm.php.

References Auth_OpenID_getUnreserved().

{
    $_unreserved = Auth_OpenID_getUnreserved();

    $i = intval($mo[1], 16);
    if ($_unreserved[$i]) {
        return chr($i);
    } else {
        return strtoupper($mo[0]);
    }

    return $mo[0];
}

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Auth_OpenID_remove_dot_segments()

Auth_OpenID_remove_dot_segments

(

$path

)

Definition at line 99 of file URINorm.php.

References $path, and Auth_Yadis_startswith().

Referenced by Auth_OpenID_urinorm().

{
    $result_segments = array();

    while ($path) {
        if (Auth_Yadis_startswith($path, '../')) {
            $path = substr($path, 3);
        } else if (Auth_Yadis_startswith($path, './')) {
            $path = substr($path, 2);
        } else if (Auth_Yadis_startswith($path, '/./')) {
            $path = substr($path, 2);
        } else if ($path == '/.') {
            $path = '/';
        } else if (Auth_Yadis_startswith($path, '/../')) {
            $path = substr($path, 3);
            if ($result_segments) {
                array_pop($result_segments);
            }
        } else if ($path == '/..') {
            $path = '/';
            if ($result_segments) {
                array_pop($result_segments);
            }
        } else if (($path == '..') ||
                   ($path == '.')) {
            $path = '';
        } else {
            $i = 0;
            if ($path[0] == '/') {
                $i = 1;
            }
            $i = strpos($path, '/', $i);
            if ($i === false) {
                $i = strlen($path);
            }
            $result_segments[] = substr($path, 0, $i);
            $path = substr($path, $i);
        }
    }

    return implode('', $result_segments);
}

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Auth_OpenID_urinorm()

Auth_OpenID_urinorm

(

$uri

)

Definition at line 142 of file URINorm.php.

References $path, $query, Auth_OpenID_getAuthorityPattern(), Auth_OpenID_getEncodedPattern(), Auth_OpenID_getURIPattern(), Auth_OpenID_getURLIllegalCharRE(), and Auth_OpenID_remove_dot_segments().

Referenced by Auth_OpenID_GenericConsumer\_checkReturnTo(), Auth_OpenID_TrustRoot\buildDiscoveryURL(), and Auth_OpenID\params_from_string().

{
    $uri_matches = array();
    preg_match(Auth_OpenID_getURIPattern(), $uri, $uri_matches);

    if (count($uri_matches) < 9) {
        for ($i = count($uri_matches); $i <= 9; $i++) {
            $uri_matches[] = '';
        }
    }

    $illegal_matches = array();
    preg_match(Auth_OpenID_getURLIllegalCharRE(),
               $uri, $illegal_matches);
    if ($illegal_matches) {
        return null;
    }

    $scheme = $uri_matches[2];
    if ($scheme) {
        $scheme = strtolower($scheme);
    }

    $scheme = $uri_matches[2];
    if ($scheme === '') {
        // No scheme specified
        return null;
    }

    $scheme = strtolower($scheme);
    if (!in_array($scheme, array('http', 'https'))) {
        // Not an absolute HTTP or HTTPS URI
        return null;
    }

    $authority = $uri_matches[4];
    if ($authority === '') {
        // Not an absolute URI
        return null;
    }

    $authority_matches = array();
    preg_match(Auth_OpenID_getAuthorityPattern(),
               $authority, $authority_matches);
    if (count($authority_matches) === 0) {
        // URI does not have a valid authority
        return null;
    }

    if (count($authority_matches) < 4) {
        for ($i = count($authority_matches); $i <= 4; $i++) {
            $authority_matches[] = '';
        }
    }

    list($_whole, $userinfo, $host, $port) = $authority_matches;

    if ($userinfo === null) {
        $userinfo = '';
    }

    if (strpos($host, '%') !== -1) {
        $host = strtolower($host);
        $host = preg_replace_callback(
                  Auth_OpenID_getEncodedPattern(),
                  'Auth_OpenID_pct_encoded_replace', $host);
        // NO IDNA.
        // $host = unicode($host, 'utf-8').encode('idna');
    } else {
        $host = strtolower($host);
    }

    if ($port) {
        if (($port == ':') ||
            ($scheme == 'http' && $port == ':80') ||
            ($scheme == 'https' && $port == ':443')) {
            $port = '';
        }
    } else {
        $port = '';
    }

    $authority = $userinfo . $host . $port;

    $path = $uri_matches[5];
    $path = preg_replace_callback(
               Auth_OpenID_getEncodedPattern(),
               'Auth_OpenID_pct_encoded_replace_unreserved', $path);

    $path = Auth_OpenID_remove_dot_segments($path);
    if (!$path) {
        $path = '/';
    }

    $query = $uri_matches[6];
    if ($query === null) {
        $query = '';
    }

    $fragment = $uri_matches[8];
    if ($fragment === null) {
        $fragment = '';
    }

    return $scheme . '://' . $authority . $path . $query . $fragment;
}

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