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< ? php
/**
* Licensed to Jasig under one or more contributor license
* agreements . See the NOTICE file distributed with this work for
* additional information regarding copyright ownership .
*
* Jasig licenses this file to you under the Apache License ,
* Version 2.0 ( the " License " ); you may not use this file except in
* compliance with the License . You may obtain a copy of the License at :
*
* http :// www . apache . org / licenses / LICENSE - 2.0
*
* Unless required by applicable law or agreed to in writing , software
* distributed under the License is distributed on an " AS IS " BASIS ,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
* See the License for the specific language governing permissions and
* limitations under the License .
*
*
*
* Interface class of the phpCAS library
* PHP Version 5
*
* @ file CAS / CAS . php
* @ category Authentication
* @ package PhpCAS
* @ author Pascal Aubry < pascal . aubry @ univ - rennes1 . fr >
* @ author Olivier Berger < olivier . berger @ it - sudparis . eu >
* @ author Brett Bieber < brett . bieber @ gmail . com >
* @ author Joachim Fritschi < jfritschi @ freenet . de >
* @ author Adam Franco < afranco @ middlebury . edu >
* @ license http :// www . apache . org / licenses / LICENSE - 2.0 Apache License 2.0
* @ link https :// wiki . jasig . org / display / CASC / phpCAS
* @ ingroup public
*/
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use Psr\Log\LoggerInterface ;
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//
// hack by Vangelis Haniotakis to handle the absence of $_SERVER['REQUEST_URI']
// in IIS
//
if ( ! isset ( $_SERVER [ 'REQUEST_URI' ]) && isset ( $_SERVER [ 'SCRIPT_NAME' ]) && isset ( $_SERVER [ 'QUERY_STRING' ])) {
$_SERVER [ 'REQUEST_URI' ] = $_SERVER [ 'SCRIPT_NAME' ] . '?' . $_SERVER [ 'QUERY_STRING' ];
}
// ########################################################################
// CONSTANTS
// ########################################################################
// ------------------------------------------------------------------------
// CAS VERSIONS
// ------------------------------------------------------------------------
/**
* phpCAS version . accessible for the user by phpCAS :: getVersion () .
*/
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define ( 'PHPCAS_VERSION' , '1.4.0' );
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/**
* @ addtogroup public
* @ {
*/
/**
* phpCAS supported protocols . accessible for the user by phpCAS :: getSupportedProtocols () .
*/
/**
* CAS version 1.0
*/
define ( " CAS_VERSION_1_0 " , '1.0' );
/*!
* CAS version 2.0
*/
define ( " CAS_VERSION_2_0 " , '2.0' );
/**
* CAS version 3.0
*/
define ( " CAS_VERSION_3_0 " , '3.0' );
// ------------------------------------------------------------------------
// SAML defines
// ------------------------------------------------------------------------
/**
* SAML protocol
*/
define ( " SAML_VERSION_1_1 " , 'S1' );
/**
* XML header for SAML POST
*/
define ( " SAML_XML_HEADER " , '<?xml version="1.0" encoding="UTF-8"?>' );
/**
* SOAP envelope for SAML POST
*/
define ( " SAML_SOAP_ENV " , '<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><SOAP-ENV:Header/>' );
/**
* SOAP body for SAML POST
*/
define ( " SAML_SOAP_BODY " , '<SOAP-ENV:Body>' );
/**
* SAMLP request
*/
define ( " SAMLP_REQUEST " , '<samlp:Request xmlns:samlp="urn:oasis:names:tc:SAML:1.0:protocol" MajorVersion="1" MinorVersion="1" RequestID="_192.168.16.51.1024506224022" IssueInstant="2002-06-19T17:03:44.022Z">' );
define ( " SAMLP_REQUEST_CLOSE " , '</samlp:Request>' );
/**
* SAMLP artifact tag ( for the ticket )
*/
define ( " SAML_ASSERTION_ARTIFACT " , '<samlp:AssertionArtifact>' );
/**
* SAMLP close
*/
define ( " SAML_ASSERTION_ARTIFACT_CLOSE " , '</samlp:AssertionArtifact>' );
/**
* SOAP body close
*/
define ( " SAML_SOAP_BODY_CLOSE " , '</SOAP-ENV:Body>' );
/**
* SOAP envelope close
*/
define ( " SAML_SOAP_ENV_CLOSE " , '</SOAP-ENV:Envelope>' );
/**
* SAML Attributes
*/
define ( " SAML_ATTRIBUTES " , 'SAMLATTRIBS' );
/**
* SAML Attributes
*/
define ( " DEFAULT_ERROR " , 'Internal script failure' );
/** @} */
/**
* @ addtogroup publicPGTStorage
* @ {
*/
// ------------------------------------------------------------------------
// FILE PGT STORAGE
// ------------------------------------------------------------------------
/**
* Default path used when storing PGT ' s to file
*/
define ( " CAS_PGT_STORAGE_FILE_DEFAULT_PATH " , session_save_path ());
/** @} */
// ------------------------------------------------------------------------
// SERVICE ACCESS ERRORS
// ------------------------------------------------------------------------
/**
* @ addtogroup publicServices
* @ {
*/
/**
* phpCAS :: service () error code on success
*/
define ( " PHPCAS_SERVICE_OK " , 0 );
/**
* phpCAS :: service () error code when the PT could not retrieve because
* the CAS server did not respond .
*/
define ( " PHPCAS_SERVICE_PT_NO_SERVER_RESPONSE " , 1 );
/**
* phpCAS :: service () error code when the PT could not retrieve because
* the response of the CAS server was ill - formed .
*/
define ( " PHPCAS_SERVICE_PT_BAD_SERVER_RESPONSE " , 2 );
/**
* phpCAS :: service () error code when the PT could not retrieve because
* the CAS server did not want to .
*/
define ( " PHPCAS_SERVICE_PT_FAILURE " , 3 );
/**
* phpCAS :: service () error code when the service was not available .
*/
define ( " PHPCAS_SERVICE_NOT_AVAILABLE " , 4 );
// ------------------------------------------------------------------------
// SERVICE TYPES
// ------------------------------------------------------------------------
/**
* phpCAS :: getProxiedService () type for HTTP GET
*/
define ( " PHPCAS_PROXIED_SERVICE_HTTP_GET " , 'CAS_ProxiedService_Http_Get' );
/**
* phpCAS :: getProxiedService () type for HTTP POST
*/
define ( " PHPCAS_PROXIED_SERVICE_HTTP_POST " , 'CAS_ProxiedService_Http_Post' );
/**
* phpCAS :: getProxiedService () type for IMAP
*/
define ( " PHPCAS_PROXIED_SERVICE_IMAP " , 'CAS_ProxiedService_Imap' );
/** @} */
// ------------------------------------------------------------------------
// LANGUAGES
// ------------------------------------------------------------------------
/**
* @ addtogroup publicLang
* @ {
*/
define ( " PHPCAS_LANG_ENGLISH " , 'CAS_Languages_English' );
define ( " PHPCAS_LANG_FRENCH " , 'CAS_Languages_French' );
define ( " PHPCAS_LANG_GREEK " , 'CAS_Languages_Greek' );
define ( " PHPCAS_LANG_GERMAN " , 'CAS_Languages_German' );
define ( " PHPCAS_LANG_JAPANESE " , 'CAS_Languages_Japanese' );
define ( " PHPCAS_LANG_SPANISH " , 'CAS_Languages_Spanish' );
define ( " PHPCAS_LANG_CATALAN " , 'CAS_Languages_Catalan' );
define ( " PHPCAS_LANG_CHINESE_SIMPLIFIED " , 'CAS_Languages_ChineseSimplified' );
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define ( " PHPCAS_LANG_GALEGO " , 'CAS_Languages_Galego' );
define ( " PHPCAS_LANG_PORTUGUESE " , 'CAS_Languages_Portuguese' );
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/** @} */
/**
* @ addtogroup internalLang
* @ {
*/
/**
* phpCAS default language ( when phpCAS :: setLang () is not used )
*/
define ( " PHPCAS_LANG_DEFAULT " , PHPCAS_LANG_ENGLISH );
/** @} */
// ------------------------------------------------------------------------
// DEBUG
// ------------------------------------------------------------------------
/**
* @ addtogroup publicDebug
* @ {
*/
/**
* The default directory for the debug file under Unix .
* @ return string directory for the debug file
*/
function gettmpdir () {
if ( ! empty ( $_ENV [ 'TMP' ])) { return realpath ( $_ENV [ 'TMP' ]); }
if ( ! empty ( $_ENV [ 'TMPDIR' ])) { return realpath ( $_ENV [ 'TMPDIR' ]); }
if ( ! empty ( $_ENV [ 'TEMP' ])) { return realpath ( $_ENV [ 'TEMP' ]); }
return " /tmp " ;
}
define ( 'DEFAULT_DEBUG_DIR' , gettmpdir () . " / " );
/** @} */
// include the class autoloader
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require_once __DIR__ . '/CAS/Autoload.php' ;
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/**
* The phpCAS class is a simple container for the phpCAS library . It provides CAS
* authentication for web applications written in PHP .
*
* @ ingroup public
* @ class phpCAS
* @ category Authentication
* @ package PhpCAS
* @ author Pascal Aubry < pascal . aubry @ univ - rennes1 . fr >
* @ author Olivier Berger < olivier . berger @ it - sudparis . eu >
* @ author Brett Bieber < brett . bieber @ gmail . com >
* @ author Joachim Fritschi < jfritschi @ freenet . de >
* @ author Adam Franco < afranco @ middlebury . edu >
* @ license http :// www . apache . org / licenses / LICENSE - 2.0 Apache License 2.0
* @ link https :// wiki . jasig . org / display / CASC / phpCAS
*/
class phpCAS
{
/**
* This variable is used by the interface class phpCAS .
*
* @ var CAS_Client
* @ hideinitializer
*/
private static $_PHPCAS_CLIENT ;
/**
* @ var array
* This variable is used to store where the initializer is called from
* ( to print a comprehensive error in case of multiple calls ) .
*
* @ hideinitializer
*/
private static $_PHPCAS_INIT_CALL ;
/**
* @ var array
* This variable is used to store phpCAS debug mode .
*
* @ hideinitializer
*/
private static $_PHPCAS_DEBUG ;
/**
* This variable is used to enable verbose mode
* This pevents debug info to be show to the user . Since it ' s a security
* feature the default is false
*
* @ hideinitializer
*/
private static $_PHPCAS_VERBOSE = false ;
// ########################################################################
// INITIALIZATION
// ########################################################################
/**
* @ addtogroup publicInit
* @ {
*/
/**
* phpCAS client initializer .
*
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* @ param string $server_version the version of the CAS server
* @ param string $server_hostname the hostname of the CAS server
* @ param int $server_port the port the CAS server is running on
* @ param string $server_uri the URI the CAS server is responding on
* @ param bool $changeSessionID Allow phpCAS to change the session_id
* ( Single Sign Out / handleLogoutRequests
* is based on that change )
* @ param \SessionHandlerInterface $sessionHandler the session handler
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*
* @ return void a newly created CAS_Client object
* @ note Only one of the phpCAS :: client () and phpCAS :: proxy functions should be
* called , only once , and before all other methods ( except phpCAS :: getVersion ()
* and phpCAS :: setDebug ()) .
*/
public static function client ( $server_version , $server_hostname ,
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$server_port , $server_uri , $changeSessionID = true , \SessionHandlerInterface $sessionHandler = null
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) {
phpCAS :: traceBegin ();
if ( is_object ( self :: $_PHPCAS_CLIENT )) {
phpCAS :: error ( self :: $_PHPCAS_INIT_CALL [ 'method' ] . '() has already been called (at ' . self :: $_PHPCAS_INIT_CALL [ 'file' ] . ':' . self :: $_PHPCAS_INIT_CALL [ 'line' ] . ')' );
}
// store where the initializer is called from
$dbg = debug_backtrace ();
self :: $_PHPCAS_INIT_CALL = array (
'done' => true ,
'file' => $dbg [ 0 ][ 'file' ],
'line' => $dbg [ 0 ][ 'line' ],
'method' => __CLASS__ . '::' . __FUNCTION__
);
// initialize the object $_PHPCAS_CLIENT
try {
self :: $_PHPCAS_CLIENT = new CAS_Client (
$server_version , false , $server_hostname , $server_port , $server_uri ,
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$changeSessionID , $sessionHandler
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);
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* phpCAS proxy initializer .
*
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* @ param string $server_version the version of the CAS server
* @ param string $server_hostname the hostname of the CAS server
* @ param string $server_port the port the CAS server is running on
* @ param string $server_uri the URI the CAS server is responding on
* @ param bool $changeSessionID Allow phpCAS to change the session_id
* ( Single Sign Out / handleLogoutRequests
* is based on that change )
* @ param \SessionHandlerInterface $sessionHandler the session handler
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*
* @ return void a newly created CAS_Client object
* @ note Only one of the phpCAS :: client () and phpCAS :: proxy functions should be
* called , only once , and before all other methods ( except phpCAS :: getVersion ()
* and phpCAS :: setDebug ()) .
*/
public static function proxy ( $server_version , $server_hostname ,
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$server_port , $server_uri , $changeSessionID = true , \SessionHandlerInterface $sessionHandler = null
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) {
phpCAS :: traceBegin ();
if ( is_object ( self :: $_PHPCAS_CLIENT )) {
phpCAS :: error ( self :: $_PHPCAS_INIT_CALL [ 'method' ] . '() has already been called (at ' . self :: $_PHPCAS_INIT_CALL [ 'file' ] . ':' . self :: $_PHPCAS_INIT_CALL [ 'line' ] . ')' );
}
// store where the initialzer is called from
$dbg = debug_backtrace ();
self :: $_PHPCAS_INIT_CALL = array (
'done' => true ,
'file' => $dbg [ 0 ][ 'file' ],
'line' => $dbg [ 0 ][ 'line' ],
'method' => __CLASS__ . '::' . __FUNCTION__
);
// initialize the object $_PHPCAS_CLIENT
try {
self :: $_PHPCAS_CLIENT = new CAS_Client (
$server_version , true , $server_hostname , $server_port , $server_uri ,
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$changeSessionID , $sessionHandler
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);
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* Answer whether or not the client or proxy has been initialized
*
* @ return bool
*/
public static function isInitialized ()
{
return ( is_object ( self :: $_PHPCAS_CLIENT ));
}
/** @} */
// ########################################################################
// DEBUGGING
// ########################################################################
/**
* @ addtogroup publicDebug
* @ {
*/
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/**
* Set / unset PSR - 3 logger
*
* @ param LoggerInterface $logger the PSR - 3 logger used for logging , or
* null to stop logging .
*
* @ return void
*/
public static function setLogger ( $logger = null )
{
if ( empty ( self :: $_PHPCAS_DEBUG [ 'unique_id' ])) {
self :: $_PHPCAS_DEBUG [ 'unique_id' ] = substr ( strtoupper ( md5 ( uniqid ( '' ))), 0 , 4 );
}
self :: $_PHPCAS_DEBUG [ 'logger' ] = $logger ;
self :: $_PHPCAS_DEBUG [ 'indent' ] = 0 ;
phpCAS :: trace ( 'START (' . date ( " Y-m-d H:i:s " ) . ') phpCAS-' . PHPCAS_VERSION . ' ******************' );
}
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/**
* Set / unset debug mode
*
* @ param string $filename the name of the file used for logging , or false
* to stop debugging .
*
* @ return void
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*
* @ deprecated
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*/
public static function setDebug ( $filename = '' )
{
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trigger_error ( 'phpCAS::setDebug() is deprecated in favor of phpCAS::setLogger().' , E_USER_DEPRECATED );
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if ( $filename != false && gettype ( $filename ) != 'string' ) {
phpCAS :: error ( 'type mismatched for parameter $dbg (should be false or the name of the log file)' );
}
if ( $filename === false ) {
self :: $_PHPCAS_DEBUG [ 'filename' ] = false ;
} else {
if ( empty ( $filename )) {
if ( preg_match ( '/^Win.*/' , getenv ( 'OS' ))) {
if ( isset ( $_ENV [ 'TMP' ])) {
$debugDir = $_ENV [ 'TMP' ] . '/' ;
} else {
$debugDir = '' ;
}
} else {
$debugDir = DEFAULT_DEBUG_DIR ;
}
$filename = $debugDir . 'phpCAS.log' ;
}
if ( empty ( self :: $_PHPCAS_DEBUG [ 'unique_id' ])) {
self :: $_PHPCAS_DEBUG [ 'unique_id' ] = substr ( strtoupper ( md5 ( uniqid ( '' ))), 0 , 4 );
}
self :: $_PHPCAS_DEBUG [ 'filename' ] = $filename ;
self :: $_PHPCAS_DEBUG [ 'indent' ] = 0 ;
phpCAS :: trace ( 'START (' . date ( " Y-m-d H:i:s " ) . ') phpCAS-' . PHPCAS_VERSION . ' ******************' );
}
}
/**
* Enable verbose errors messages in the website output
* This is a security relevant since internal status info may leak an may
* help an attacker . Default is therefore false
*
* @ param bool $verbose enable verbose output
*
* @ return void
*/
public static function setVerbose ( $verbose )
{
if ( $verbose === true ) {
self :: $_PHPCAS_VERBOSE = true ;
} else {
self :: $_PHPCAS_VERBOSE = false ;
}
}
/**
* Show is verbose mode is on
*
* @ return bool verbose
*/
public static function getVerbose ()
{
return self :: $_PHPCAS_VERBOSE ;
}
/**
* Logs a string in debug mode .
*
* @ param string $str the string to write
*
* @ return void
* @ private
*/
public static function log ( $str )
{
$indent_str = " . " ;
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if ( isset ( self :: $_PHPCAS_DEBUG [ 'logger' ]) || ! empty ( self :: $_PHPCAS_DEBUG [ 'filename' ])) {
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for ( $i = 0 ; $i < self :: $_PHPCAS_DEBUG [ 'indent' ]; $i ++ ) {
$indent_str .= '| ' ;
}
// allow for multiline output with proper identing. Usefull for
// dumping cas answers etc.
$str2 = str_replace ( " \n " , " \n " . self :: $_PHPCAS_DEBUG [ 'unique_id' ] . ' ' . $indent_str , $str );
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$str3 = self :: $_PHPCAS_DEBUG [ 'unique_id' ] . ' ' . $indent_str . $str2 ;
if ( isset ( self :: $_PHPCAS_DEBUG [ 'logger' ])) {
self :: $_PHPCAS_DEBUG [ 'logger' ] -> info ( $str3 );
}
if ( ! empty ( self :: $_PHPCAS_DEBUG [ 'filename' ])) {
// Check if file exists and modifiy file permissions to be only
// readable by the webserver
if ( ! file_exists ( self :: $_PHPCAS_DEBUG [ 'filename' ])) {
touch ( self :: $_PHPCAS_DEBUG [ 'filename' ]);
// Chmod will fail on windows
@ chmod ( self :: $_PHPCAS_DEBUG [ 'filename' ], 0600 );
}
error_log ( $str3 . " \n " , 3 , self :: $_PHPCAS_DEBUG [ 'filename' ]);
}
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}
}
/**
* This method is used by interface methods to print an error and where the
* function was originally called from .
*
* @ param string $msg the message to print
*
* @ return void
* @ private
*/
public static function error ( $msg )
{
phpCAS :: traceBegin ();
$dbg = debug_backtrace ();
$function = '?' ;
$file = '?' ;
$line = '?' ;
if ( is_array ( $dbg )) {
for ( $i = 1 ; $i < sizeof ( $dbg ); $i ++ ) {
if ( is_array ( $dbg [ $i ]) && isset ( $dbg [ $i ][ 'class' ]) ) {
if ( $dbg [ $i ][ 'class' ] == __CLASS__ ) {
$function = $dbg [ $i ][ 'function' ];
$file = $dbg [ $i ][ 'file' ];
$line = $dbg [ $i ][ 'line' ];
}
}
}
}
if ( self :: $_PHPCAS_VERBOSE ) {
echo " <br /> \n <b>phpCAS error</b>: <font color= \" FF0000 \" ><b> " . __CLASS__ . " :: " . $function . '(): ' . htmlentities ( $msg ) . " </b></font> in <b> " . $file . " </b> on line <b> " . $line . " </b><br /> \n " ;
} else {
echo " <br /> \n <b>Error</b>: <font color= \" FF0000 \" ><b> " . DEFAULT_ERROR . " </b><br /> \n " ;
}
phpCAS :: trace ( $msg . ' in ' . $file . 'on line ' . $line );
phpCAS :: traceEnd ();
throw new CAS_GracefullTerminationException ( __CLASS__ . " :: " . $function . '(): ' . $msg );
}
/**
* This method is used to log something in debug mode .
*
* @ param string $str string to log
*
* @ return void
*/
public static function trace ( $str )
{
$dbg = debug_backtrace ();
phpCAS :: log ( $str . ' [' . basename ( $dbg [ 0 ][ 'file' ]) . ':' . $dbg [ 0 ][ 'line' ] . ']' );
}
/**
* This method is used to indicate the start of the execution of a function
* in debug mode .
*
* @ return void
*/
public static function traceBegin ()
{
$dbg = debug_backtrace ();
$str = '=> ' ;
if ( ! empty ( $dbg [ 1 ][ 'class' ])) {
$str .= $dbg [ 1 ][ 'class' ] . '::' ;
}
$str .= $dbg [ 1 ][ 'function' ] . '(' ;
if ( is_array ( $dbg [ 1 ][ 'args' ])) {
foreach ( $dbg [ 1 ][ 'args' ] as $index => $arg ) {
if ( $index != 0 ) {
$str .= ', ' ;
}
if ( is_object ( $arg )) {
$str .= get_class ( $arg );
} else {
$str .= str_replace ( array ( " \r \n " , " \n " , " \r " ), " " , var_export ( $arg , true ));
}
}
}
if ( isset ( $dbg [ 1 ][ 'file' ])) {
$file = basename ( $dbg [ 1 ][ 'file' ]);
} else {
$file = 'unknown_file' ;
}
if ( isset ( $dbg [ 1 ][ 'line' ])) {
$line = $dbg [ 1 ][ 'line' ];
} else {
$line = 'unknown_line' ;
}
$str .= ') [' . $file . ':' . $line . ']' ;
phpCAS :: log ( $str );
if ( ! isset ( self :: $_PHPCAS_DEBUG [ 'indent' ])) {
self :: $_PHPCAS_DEBUG [ 'indent' ] = 0 ;
} else {
self :: $_PHPCAS_DEBUG [ 'indent' ] ++ ;
}
}
/**
* This method is used to indicate the end of the execution of a function in
* debug mode .
*
* @ param mixed $res the result of the function
*
* @ return void
*/
public static function traceEnd ( $res = '' )
{
if ( empty ( self :: $_PHPCAS_DEBUG [ 'indent' ])) {
self :: $_PHPCAS_DEBUG [ 'indent' ] = 0 ;
} else {
self :: $_PHPCAS_DEBUG [ 'indent' ] -- ;
}
$str = '' ;
if ( is_object ( $res )) {
$str .= '<= ' . get_class ( $res );
} else {
$str .= '<= ' . str_replace ( array ( " \r \n " , " \n " , " \r " ), " " , var_export ( $res , true ));
}
phpCAS :: log ( $str );
}
/**
* This method is used to indicate the end of the execution of the program
*
* @ return void
*/
public static function traceExit ()
{
phpCAS :: log ( 'exit()' );
while ( self :: $_PHPCAS_DEBUG [ 'indent' ] > 0 ) {
phpCAS :: log ( '-' );
self :: $_PHPCAS_DEBUG [ 'indent' ] -- ;
}
}
/** @} */
// ########################################################################
// INTERNATIONALIZATION
// ########################################################################
/**
* @ addtogroup publicLang
* @ {
*/
/**
* This method is used to set the language used by phpCAS .
*
* @ param string $lang string representing the language .
*
* @ return void
*
* @ sa PHPCAS_LANG_FRENCH , PHPCAS_LANG_ENGLISH
* @ note Can be called only once .
*/
public static function setLang ( $lang )
{
phpCAS :: _validateClientExists ();
try {
self :: $_PHPCAS_CLIENT -> setLang ( $lang );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
}
/** @} */
// ########################################################################
// VERSION
// ########################################################################
/**
* @ addtogroup public
* @ {
*/
/**
* This method returns the phpCAS version .
*
* @ return string the phpCAS version .
*/
public static function getVersion ()
{
return PHPCAS_VERSION ;
}
/**
* This method returns supported protocols .
*
* @ return array an array of all supported protocols . Use internal protocol name as array key .
*/
public static function getSupportedProtocols ()
{
$supportedProtocols = array ();
$supportedProtocols [ CAS_VERSION_1_0 ] = 'CAS 1.0' ;
$supportedProtocols [ CAS_VERSION_2_0 ] = 'CAS 2.0' ;
$supportedProtocols [ CAS_VERSION_3_0 ] = 'CAS 3.0' ;
$supportedProtocols [ SAML_VERSION_1_1 ] = 'SAML 1.1' ;
return $supportedProtocols ;
}
/** @} */
// ########################################################################
// HTML OUTPUT
// ########################################################################
/**
* @ addtogroup publicOutput
* @ {
*/
/**
* This method sets the HTML header used for all outputs .
*
* @ param string $header the HTML header .
*
* @ return void
*/
public static function setHTMLHeader ( $header )
{
phpCAS :: _validateClientExists ();
try {
self :: $_PHPCAS_CLIENT -> setHTMLHeader ( $header );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
}
/**
* This method sets the HTML footer used for all outputs .
*
* @ param string $footer the HTML footer .
*
* @ return void
*/
public static function setHTMLFooter ( $footer )
{
phpCAS :: _validateClientExists ();
try {
self :: $_PHPCAS_CLIENT -> setHTMLFooter ( $footer );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
}
/** @} */
// ########################################################################
// PGT STORAGE
// ########################################################################
/**
* @ addtogroup publicPGTStorage
* @ {
*/
/**
* This method can be used to set a custom PGT storage object .
*
* @ param CAS_PGTStorage_AbstractStorage $storage a PGT storage object that inherits from the
* CAS_PGTStorage_AbstractStorage class
*
* @ return void
*/
public static function setPGTStorage ( $storage )
{
phpCAS :: traceBegin ();
phpCAS :: _validateProxyExists ();
try {
self :: $_PHPCAS_CLIENT -> setPGTStorage ( $storage );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* This method is used to tell phpCAS to store the response of the
* CAS server to PGT requests in a database .
*
* @ param string $dsn_or_pdo a dsn string to use for creating a PDO
* object or a PDO object
* @ param string $username the username to use when connecting to the
* database
* @ param string $password the password to use when connecting to the
* database
* @ param string $table the table to use for storing and retrieving
* PGT ' s
* @ param string $driver_options any driver options to use when connecting
* to the database
*
* @ return void
*/
public static function setPGTStorageDb ( $dsn_or_pdo , $username = '' ,
$password = '' , $table = '' , $driver_options = null
) {
phpCAS :: traceBegin ();
phpCAS :: _validateProxyExists ();
try {
self :: $_PHPCAS_CLIENT -> setPGTStorageDb ( $dsn_or_pdo , $username , $password , $table , $driver_options );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* This method is used to tell phpCAS to store the response of the
* CAS server to PGT requests onto the filesystem .
*
* @ param string $path the path where the PGT ' s should be stored
*
* @ return void
*/
public static function setPGTStorageFile ( $path = '' )
{
phpCAS :: traceBegin ();
phpCAS :: _validateProxyExists ();
try {
self :: $_PHPCAS_CLIENT -> setPGTStorageFile ( $path );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/** @} */
// ########################################################################
// ACCESS TO EXTERNAL SERVICES
// ########################################################################
/**
* @ addtogroup publicServices
* @ {
*/
/**
* Answer a proxy - authenticated service handler .
*
* @ param string $type The service type . One of
* PHPCAS_PROXIED_SERVICE_HTTP_GET ; PHPCAS_PROXIED_SERVICE_HTTP_POST ;
* PHPCAS_PROXIED_SERVICE_IMAP
*
* @ return CAS_ProxiedService
* @ throws InvalidArgumentException If the service type is unknown .
*/
public static function getProxiedService ( $type )
{
phpCAS :: traceBegin ();
phpCAS :: _validateProxyExists ();
try {
$res = self :: $_PHPCAS_CLIENT -> getProxiedService ( $type );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
return $res ;
}
/**
* Initialize a proxied - service handler with the proxy - ticket it should use .
*
* @ param CAS_ProxiedService $proxiedService Proxied Service Handler
*
* @ return void
* @ throws CAS_ProxyTicketException If there is a proxy - ticket failure .
* The code of the Exception will be one of :
* PHPCAS_SERVICE_PT_NO_SERVER_RESPONSE
* PHPCAS_SERVICE_PT_BAD_SERVER_RESPONSE
* PHPCAS_SERVICE_PT_FAILURE
*/
public static function initializeProxiedService ( CAS_ProxiedService $proxiedService )
{
phpCAS :: _validateProxyExists ();
try {
self :: $_PHPCAS_CLIENT -> initializeProxiedService ( $proxiedService );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
}
/**
* This method is used to access an HTTP [ S ] service .
*
* @ param string $url the service to access .
* @ param int & $err_code an error code Possible values are
* PHPCAS_SERVICE_OK ( on success ), PHPCAS_SERVICE_PT_NO_SERVER_RESPONSE ,
* PHPCAS_SERVICE_PT_BAD_SERVER_RESPONSE , PHPCAS_SERVICE_PT_FAILURE ,
* PHPCAS_SERVICE_NOT_AVAILABLE .
* @ param string & $output the output of the service ( also used to give an
* error message on failure ) .
*
* @ return bool true on success , false otherwise ( in this later case ,
* $err_code gives the reason why it failed and $output contains an error
* message ) .
*/
public static function serviceWeb ( $url , & $err_code , & $output )
{
phpCAS :: traceBegin ();
phpCAS :: _validateProxyExists ();
try {
$res = self :: $_PHPCAS_CLIENT -> serviceWeb ( $url , $err_code , $output );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ( $res );
return $res ;
}
/**
* This method is used to access an IMAP / POP3 / NNTP service .
*
* @ param string $url a string giving the URL of the service ,
* including the mailing box for IMAP URLs , as accepted by imap_open () .
* @ param string $service a string giving for CAS retrieve Proxy ticket
* @ param string $flags options given to imap_open () .
* @ param int & $err_code an error code Possible values are
* PHPCAS_SERVICE_OK ( on success ), PHPCAS_SERVICE_PT_NO_SERVER_RESPONSE ,
* PHPCAS_SERVICE_PT_BAD_SERVER_RESPONSE , PHPCAS_SERVICE_PT_FAILURE ,
* PHPCAS_SERVICE_NOT_AVAILABLE .
* @ param string & $err_msg an error message on failure
* @ param string & $pt the Proxy Ticket ( PT ) retrieved from the CAS
* server to access the URL on success , false on error ) .
*
* @ return object | false IMAP stream on success , false otherwise ( in this later
* case , $err_code gives the reason why it failed and $err_msg contains an
* error message ) .
*/
public static function serviceMail ( $url , $service , $flags , & $err_code , & $err_msg , & $pt )
{
phpCAS :: traceBegin ();
phpCAS :: _validateProxyExists ();
try {
$res = self :: $_PHPCAS_CLIENT -> serviceMail ( $url , $service , $flags , $err_code , $err_msg , $pt );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ( $res );
return $res ;
}
/** @} */
// ########################################################################
// AUTHENTICATION
// ########################################################################
/**
* @ addtogroup publicAuth
* @ {
*/
/**
* Set the times authentication will be cached before really accessing the
* CAS server in gateway mode :
* - - 1 : check only once , and then never again ( until you pree login )
* - 0 : always check
* - n : check every " n " time
*
* @ param int $n an integer .
*
* @ return void
*/
public static function setCacheTimesForAuthRecheck ( $n )
{
phpCAS :: _validateClientExists ();
try {
self :: $_PHPCAS_CLIENT -> setCacheTimesForAuthRecheck ( $n );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
}
/**
* Set a callback function to be run when receiving CAS attributes
*
* The callback function will be passed an $success_elements
* payload of the response ( \DOMElement ) as its first parameter .
*
* @ param string $function Callback function
* @ param array $additionalArgs optional array of arguments
*
* @ return void
*/
public static function setCasAttributeParserCallback ( $function , array $additionalArgs = array ())
{
phpCAS :: _validateClientExists ();
self :: $_PHPCAS_CLIENT -> setCasAttributeParserCallback ( $function , $additionalArgs );
}
/**
* Set a callback function to be run when a user authenticates .
*
* The callback function will be passed a $logoutTicket as its first
* parameter , followed by any $additionalArgs you pass . The $logoutTicket
* parameter is an opaque string that can be used to map the session - id to
* logout request in order to support single - signout in applications that
* manage their own sessions ( rather than letting phpCAS start the session ) .
*
* phpCAS :: forceAuthentication () will always exit and forward client unless
* they are already authenticated . To perform an action at the moment the user
* logs in ( such as registering an account , performing logging , etc ), register
* a callback function here .
*
* @ param callable $function Callback function
* @ param array $additionalArgs optional array of arguments
*
* @ return void
*/
public static function setPostAuthenticateCallback ( $function , array $additionalArgs = array ())
{
phpCAS :: _validateClientExists ();
self :: $_PHPCAS_CLIENT -> setPostAuthenticateCallback ( $function , $additionalArgs );
}
/**
* Set a callback function to be run when a single - signout request is
* received . The callback function will be passed a $logoutTicket as its
* first parameter , followed by any $additionalArgs you pass . The
* $logoutTicket parameter is an opaque string that can be used to map a
* session - id to the logout request in order to support single - signout in
* applications that manage their own sessions ( rather than letting phpCAS
* start and destroy the session ) .
*
* @ param callable $function Callback function
* @ param array $additionalArgs optional array of arguments
*
* @ return void
*/
public static function setSingleSignoutCallback ( $function , array $additionalArgs = array ())
{
phpCAS :: _validateClientExists ();
self :: $_PHPCAS_CLIENT -> setSingleSignoutCallback ( $function , $additionalArgs );
}
/**
* This method is called to check if the user is already authenticated
* locally or has a global cas session . A already existing cas session is
* determined by a cas gateway call . ( cas login call without any interactive
* prompt )
*
* @ return bool true when the user is authenticated , false when a previous
* gateway login failed or the function will not return if the user is
* redirected to the cas server for a gateway login attempt
*/
public static function checkAuthentication ()
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
$auth = self :: $_PHPCAS_CLIENT -> checkAuthentication ();
// store where the authentication has been checked and the result
self :: $_PHPCAS_CLIENT -> markAuthenticationCall ( $auth );
phpCAS :: traceEnd ( $auth );
return $auth ;
}
/**
* This method is called to force authentication if the user was not already
* authenticated . If the user is not authenticated , halt by redirecting to
* the CAS server .
*
* @ return bool Authentication
*/
public static function forceAuthentication ()
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
$auth = self :: $_PHPCAS_CLIENT -> forceAuthentication ();
// store where the authentication has been checked and the result
self :: $_PHPCAS_CLIENT -> markAuthenticationCall ( $auth );
/* if ( ! $auth ) {
phpCAS :: trace ( 'user is not authenticated, redirecting to the CAS server' );
self :: $_PHPCAS_CLIENT -> forceAuthentication ();
} else {
phpCAS :: trace ( 'no need to authenticate (user `' . phpCAS :: getUser () . '\' is already authenticated)' );
} */
phpCAS :: traceEnd ();
return $auth ;
}
/**
* This method is called to renew the authentication .
*
* @ return void
**/
public static function renewAuthentication ()
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
$auth = self :: $_PHPCAS_CLIENT -> renewAuthentication ();
// store where the authentication has been checked and the result
self :: $_PHPCAS_CLIENT -> markAuthenticationCall ( $auth );
//self::$_PHPCAS_CLIENT->renewAuthentication();
phpCAS :: traceEnd ();
}
/**
* This method is called to check if the user is authenticated ( previously or by
* tickets given in the URL ) .
*
* @ return bool true when the user is authenticated .
*/
public static function isAuthenticated ()
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
// call the isAuthenticated method of the $_PHPCAS_CLIENT object
$auth = self :: $_PHPCAS_CLIENT -> isAuthenticated ();
// store where the authentication has been checked and the result
self :: $_PHPCAS_CLIENT -> markAuthenticationCall ( $auth );
phpCAS :: traceEnd ( $auth );
return $auth ;
}
/**
* Checks whether authenticated based on $_SESSION . Useful to avoid
* server calls .
*
* @ return bool true if authenticated , false otherwise .
* @ since 0.4 . 22 by Brendan Arnold
*/
public static function isSessionAuthenticated ()
{
phpCAS :: _validateClientExists ();
return ( self :: $_PHPCAS_CLIENT -> isSessionAuthenticated ());
}
/**
* This method returns the CAS user ' s login name .
*
* @ return string the login name of the authenticated user
* @ warning should only be called after phpCAS :: forceAuthentication ()
* or phpCAS :: checkAuthentication () .
* */
public static function getUser ()
{
phpCAS :: _validateClientExists ();
try {
return self :: $_PHPCAS_CLIENT -> getUser ();
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
}
/**
* Answer attributes about the authenticated user .
*
* @ warning should only be called after phpCAS :: forceAuthentication ()
* or phpCAS :: checkAuthentication () .
*
* @ return array
*/
public static function getAttributes ()
{
phpCAS :: _validateClientExists ();
try {
return self :: $_PHPCAS_CLIENT -> getAttributes ();
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
}
/**
* Answer true if there are attributes for the authenticated user .
*
* @ warning should only be called after phpCAS :: forceAuthentication ()
* or phpCAS :: checkAuthentication () .
*
* @ return bool
*/
public static function hasAttributes ()
{
phpCAS :: _validateClientExists ();
try {
return self :: $_PHPCAS_CLIENT -> hasAttributes ();
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
}
/**
* Answer true if an attribute exists for the authenticated user .
*
* @ param string $key attribute name
*
* @ return bool
* @ warning should only be called after phpCAS :: forceAuthentication ()
* or phpCAS :: checkAuthentication () .
*/
public static function hasAttribute ( $key )
{
phpCAS :: _validateClientExists ();
try {
return self :: $_PHPCAS_CLIENT -> hasAttribute ( $key );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
}
/**
* Answer an attribute for the authenticated user .
*
* @ param string $key attribute name
*
* @ return mixed string for a single value or an array if multiple values exist .
* @ warning should only be called after phpCAS :: forceAuthentication ()
* or phpCAS :: checkAuthentication () .
*/
public static function getAttribute ( $key )
{
phpCAS :: _validateClientExists ();
try {
return self :: $_PHPCAS_CLIENT -> getAttribute ( $key );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
}
/**
* Handle logout requests .
*
* @ param bool $check_client additional safety check
* @ param array $allowed_clients array of allowed clients
*
* @ return void
*/
public static function handleLogoutRequests ( $check_client = true , $allowed_clients = array ())
{
phpCAS :: _validateClientExists ();
return ( self :: $_PHPCAS_CLIENT -> handleLogoutRequests ( $check_client , $allowed_clients ));
}
/**
* This method returns the URL to be used to login .
*
* @ return string the login URL
*/
public static function getServerLoginURL ()
{
phpCAS :: _validateClientExists ();
return self :: $_PHPCAS_CLIENT -> getServerLoginURL ();
}
/**
* Set the login URL of the CAS server .
*
* @ param string $url the login URL
*
* @ return void
* @ since 0.4 . 21 by Wyman Chan
*/
public static function setServerLoginURL ( $url = '' )
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
try {
self :: $_PHPCAS_CLIENT -> setServerLoginURL ( $url );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* Set the serviceValidate URL of the CAS server .
* Used for all CAS versions of URL validations .
* Examples :
* CAS 1.0 http :// www . exemple . com / validate
* CAS 2.0 http :// www . exemple . com / validateURL
* CAS 3.0 http :// www . exemple . com / p3 / serviceValidate
*
* @ param string $url the serviceValidate URL
*
* @ return void
*/
public static function setServerServiceValidateURL ( $url = '' )
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
try {
self :: $_PHPCAS_CLIENT -> setServerServiceValidateURL ( $url );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* Set the proxyValidate URL of the CAS server .
* Used for all CAS versions of proxy URL validations
* Examples :
* CAS 1.0 http :// www . exemple . com /
* CAS 2.0 http :// www . exemple . com / proxyValidate
* CAS 3.0 http :// www . exemple . com / p3 / proxyValidate
*
* @ param string $url the proxyValidate URL
*
* @ return void
*/
public static function setServerProxyValidateURL ( $url = '' )
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
try {
self :: $_PHPCAS_CLIENT -> setServerProxyValidateURL ( $url );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* Set the samlValidate URL of the CAS server .
*
* @ param string $url the samlValidate URL
*
* @ return void
*/
public static function setServerSamlValidateURL ( $url = '' )
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
try {
self :: $_PHPCAS_CLIENT -> setServerSamlValidateURL ( $url );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* This method returns the URL to be used to logout .
*
* @ return string the URL to use to log out
*/
public static function getServerLogoutURL ()
{
phpCAS :: _validateClientExists ();
return self :: $_PHPCAS_CLIENT -> getServerLogoutURL ();
}
/**
* Set the logout URL of the CAS server .
*
* @ param string $url the logout URL
*
* @ return void
* @ since 0.4 . 21 by Wyman Chan
*/
public static function setServerLogoutURL ( $url = '' )
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
try {
self :: $_PHPCAS_CLIENT -> setServerLogoutURL ( $url );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* This method is used to logout from CAS .
*
* @ param string $params an array that contains the optional url and
* service parameters that will be passed to the CAS server
*
* @ return void
*/
public static function logout ( $params = " " )
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
$parsedParams = array ();
if ( $params != " " ) {
if ( is_string ( $params )) {
phpCAS :: error ( 'method `phpCAS::logout($url)\' is now deprecated, use `phpCAS::logoutWithUrl($url)\' instead' );
}
if ( ! is_array ( $params )) {
phpCAS :: error ( 'type mismatched for parameter $params (should be `array\')' );
}
foreach ( $params as $key => $value ) {
if ( $key != " service " && $key != " url " ) {
phpCAS :: error ( 'only `url\' and `service\' parameters are allowed for method `phpCAS::logout($params)\'' );
}
$parsedParams [ $key ] = $value ;
}
}
self :: $_PHPCAS_CLIENT -> logout ( $parsedParams );
// never reached
phpCAS :: traceEnd ();
}
/**
* This method is used to logout from CAS . Halts by redirecting to the CAS
* server .
*
* @ param string $service a URL that will be transmitted to the CAS server
*
* @ return void
*/
public static function logoutWithRedirectService ( $service )
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
if ( ! is_string ( $service )) {
phpCAS :: error ( 'type mismatched for parameter $service (should be `string\')' );
}
self :: $_PHPCAS_CLIENT -> logout ( array ( " service " => $service ));
// never reached
phpCAS :: traceEnd ();
}
/**
* This method is used to logout from CAS . Halts by redirecting to the CAS
* server .
*
* @ param string $url a URL that will be transmitted to the CAS server
*
* @ return void
* @ deprecated The url parameter has been removed from the CAS server as of
* version 3.3 . 5.1
*/
public static function logoutWithUrl ( $url )
{
trigger_error ( 'Function deprecated for cas servers >= 3.3.5.1' , E_USER_DEPRECATED );
phpCAS :: traceBegin ();
if ( ! is_object ( self :: $_PHPCAS_CLIENT )) {
phpCAS :: error ( 'this method should only be called after ' . __CLASS__ . '::client() or' . __CLASS__ . '::proxy()' );
}
if ( ! is_string ( $url )) {
phpCAS :: error ( 'type mismatched for parameter $url (should be `string\')' );
}
self :: $_PHPCAS_CLIENT -> logout ( array ( " url " => $url ));
// never reached
phpCAS :: traceEnd ();
}
/**
* This method is used to logout from CAS . Halts by redirecting to the CAS
* server .
*
* @ param string $service a URL that will be transmitted to the CAS server
* @ param string $url a URL that will be transmitted to the CAS server
*
* @ return void
*
* @ deprecated The url parameter has been removed from the CAS server as of
* version 3.3 . 5.1
*/
public static function logoutWithRedirectServiceAndUrl ( $service , $url )
{
trigger_error ( 'Function deprecated for cas servers >= 3.3.5.1' , E_USER_DEPRECATED );
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
if ( ! is_string ( $service )) {
phpCAS :: error ( 'type mismatched for parameter $service (should be `string\')' );
}
if ( ! is_string ( $url )) {
phpCAS :: error ( 'type mismatched for parameter $url (should be `string\')' );
}
self :: $_PHPCAS_CLIENT -> logout (
array (
" service " => $service ,
" url " => $url
)
);
// never reached
phpCAS :: traceEnd ();
}
/**
* Set the fixed URL that will be used by the CAS server to transmit the
* PGT . When this method is not called , a phpCAS script uses its own URL
* for the callback .
*
* @ param string $url the URL
*
* @ return void
*/
public static function setFixedCallbackURL ( $url = '' )
{
phpCAS :: traceBegin ();
phpCAS :: _validateProxyExists ();
try {
self :: $_PHPCAS_CLIENT -> setCallbackURL ( $url );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* Set the fixed URL that will be set as the CAS service parameter . When this
* method is not called , a phpCAS script uses its own URL .
*
* @ param string $url the URL
*
* @ return void
*/
public static function setFixedServiceURL ( $url )
{
phpCAS :: traceBegin ();
phpCAS :: _validateProxyExists ();
try {
self :: $_PHPCAS_CLIENT -> setURL ( $url );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* Get the URL that is set as the CAS service parameter .
*
* @ return string Service Url
*/
public static function getServiceURL ()
{
phpCAS :: _validateProxyExists ();
return ( self :: $_PHPCAS_CLIENT -> getURL ());
}
/**
* Retrieve a Proxy Ticket from the CAS server .
*
* @ param string $target_service Url string of service to proxy
* @ param int & $err_code error code
* @ param string & $err_msg error message
*
* @ return string Proxy Ticket
*/
public static function retrievePT ( $target_service , & $err_code , & $err_msg )
{
phpCAS :: _validateProxyExists ();
try {
return ( self :: $_PHPCAS_CLIENT -> retrievePT ( $target_service , $err_code , $err_msg ));
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
}
/**
* Set the certificate of the CAS server CA and if the CN should be properly
* verified .
*
* @ param string $cert CA certificate file name
* @ param bool $validate_cn Validate CN in certificate ( default true )
*
* @ return void
*/
public static function setCasServerCACert ( $cert , $validate_cn = true )
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
try {
self :: $_PHPCAS_CLIENT -> setCasServerCACert ( $cert , $validate_cn );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* Set no SSL validation for the CAS server .
*
* @ return void
*/
public static function setNoCasServerValidation ()
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
phpCAS :: trace ( 'You have configured no validation of the legitimacy of the cas server. This is not recommended for production use.' );
self :: $_PHPCAS_CLIENT -> setNoCasServerValidation ();
phpCAS :: traceEnd ();
}
/**
* Disable the removal of a CAS - Ticket from the URL when authenticating
* DISABLING POSES A SECURITY RISK :
* We normally remove the ticket by an additional redirect as a security
* precaution to prevent a ticket in the HTTP_REFERRER or be carried over in
* the URL parameter
*
* @ return void
*/
public static function setNoClearTicketsFromUrl ()
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
self :: $_PHPCAS_CLIENT -> setNoClearTicketsFromUrl ();
phpCAS :: traceEnd ();
}
/** @} */
/**
* Change CURL options .
* CURL is used to connect through HTTPS to CAS server
*
* @ param string $key the option key
* @ param string $value the value to set
*
* @ return void
*/
public static function setExtraCurlOption ( $key , $value )
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
self :: $_PHPCAS_CLIENT -> setExtraCurlOption ( $key , $value );
phpCAS :: traceEnd ();
}
/**
* Set a salt / seed for the session - id hash to make it harder to guess .
*
* When $changeSessionID = true phpCAS will create a session - id that is derived
* from the service ticket . Doing so allows phpCAS to look - up and destroy the
* proper session on single - log - out requests . While the service tickets
* provided by the CAS server may include enough data to generate a strong
* hash , clients may provide an additional salt to ensure that session ids
* are not guessable if the session tickets do not have enough entropy .
*
* @ param string $salt The salt to combine with the session ticket .
*
* @ return void
*/
public static function setSessionIdSalt ( $salt ) {
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
self :: $_PHPCAS_CLIENT -> setSessionIdSalt ( $salt );
phpCAS :: traceEnd ();
}
/**
* If you want your service to be proxied you have to enable it ( default
* disabled ) and define an accepable list of proxies that are allowed to
* proxy your service .
*
* Add each allowed proxy definition object . For the normal CAS_ProxyChain
* class , the constructor takes an array of proxies to match . The list is in
* reverse just as seen from the service . Proxies have to be defined in reverse
* from the service to the user . If a user hits service A and gets proxied via
* B to service C the list of acceptable on C would be array ( B , A ) . The definition
* of an individual proxy can be either a string or a regexp ( preg_match is used )
* that will be matched against the proxy list supplied by the cas server
* when validating the proxy tickets . The strings are compared starting from
* the beginning and must fully match with the proxies in the list .
* Example :
* phpCAS :: allowProxyChain ( new CAS_ProxyChain ( array (
* 'https://app.example.com/'
* )));
* phpCAS :: allowProxyChain ( new CAS_ProxyChain ( array (
* '/^https:\/\/app[0-9]\.example\.com\/rest\//' ,
* 'http://client.example.com/'
* )));
*
* For quick testing or in certain production screnarios you might want to
* allow allow any other valid service to proxy your service . To do so , add
* the " Any " chain :
* phpCAS :: allowProxyChain ( new CAS_ProxyChain_Any );
* THIS SETTING IS HOWEVER NOT RECOMMENDED FOR PRODUCTION AND HAS SECURITY
* IMPLICATIONS : YOU ARE ALLOWING ANY SERVICE TO ACT ON BEHALF OF A USER
* ON THIS SERVICE .
*
* @ param CAS_ProxyChain_Interface $proxy_chain A proxy - chain that will be
* matched against the proxies requesting access
*
* @ return void
*/
public static function allowProxyChain ( CAS_ProxyChain_Interface $proxy_chain )
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
if ( self :: $_PHPCAS_CLIENT -> getServerVersion () !== CAS_VERSION_2_0
&& self :: $_PHPCAS_CLIENT -> getServerVersion () !== CAS_VERSION_3_0
) {
phpCAS :: error ( 'this method can only be used with the cas 2.0/3.0 protocols' );
}
self :: $_PHPCAS_CLIENT -> getAllowedProxyChains () -> allowProxyChain ( $proxy_chain );
phpCAS :: traceEnd ();
}
/**
* Answer an array of proxies that are sitting in front of this application .
* This method will only return a non - empty array if we have received and
* validated a Proxy Ticket .
*
* @ return array
* @ access public
* @ since 6 / 25 / 09
*/
public static function getProxies ()
{
phpCAS :: _validateProxyExists ();
return ( self :: $_PHPCAS_CLIENT -> getProxies ());
}
// ########################################################################
// PGTIOU/PGTID and logoutRequest rebroadcasting
// ########################################################################
/**
* Add a pgtIou / pgtId and logoutRequest rebroadcast node .
*
* @ param string $rebroadcastNodeUrl The rebroadcast node URL . Can be
* hostname or IP .
*
* @ return void
*/
public static function addRebroadcastNode ( $rebroadcastNodeUrl )
{
phpCAS :: traceBegin ();
phpCAS :: log ( 'rebroadcastNodeUrl:' . $rebroadcastNodeUrl );
phpCAS :: _validateClientExists ();
try {
self :: $_PHPCAS_CLIENT -> addRebroadcastNode ( $rebroadcastNodeUrl );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* This method is used to add header parameters when rebroadcasting
* pgtIou / pgtId or logoutRequest .
*
* @ param String $header Header to send when rebroadcasting .
*
* @ return void
*/
public static function addRebroadcastHeader ( $header )
{
phpCAS :: traceBegin ();
phpCAS :: _validateClientExists ();
try {
self :: $_PHPCAS_CLIENT -> addRebroadcastHeader ( $header );
} catch ( Exception $e ) {
phpCAS :: error ( get_class ( $e ) . ': ' . $e -> getMessage ());
}
phpCAS :: traceEnd ();
}
/**
* Checks if a client already exists
*
* @ throws CAS_OutOfSequenceBeforeClientException
*
* @ return void
*/
private static function _validateClientExists ()
{
if ( ! is_object ( self :: $_PHPCAS_CLIENT )) {
throw new CAS_OutOfSequenceBeforeClientException ();
}
}
/**
* Checks of a proxy client aready exists
*
* @ throws CAS_OutOfSequenceBeforeProxyException
*
* @ return void
*/
private static function _validateProxyExists ()
{
if ( ! is_object ( self :: $_PHPCAS_CLIENT )) {
throw new CAS_OutOfSequenceBeforeProxyException ();
}
}
2021-07-18 20:40:01 +09:00
/**
* @ return CAS_Client
*/
public static function getCasClient ()
{
return self :: $_PHPCAS_CLIENT ;
}
2019-06-23 06:23:21 +09:00
/**
* For testing purposes , use this method to set the client to a test double
*
* @ return void
*/
public static function setCasClient ( \CAS_Client $client )
{
self :: $_PHPCAS_CLIENT = $client ;
}
}
// ########################################################################
// DOCUMENTATION
// ########################################################################
// ########################################################################
// MAIN PAGE
/**
* @ mainpage
*
* The following pages only show the source documentation .
*
*/
// ########################################################################
// MODULES DEFINITION
/** @defgroup public User interface */
/** @ defgroup publicInit Initialization
* @ ingroup public */
/** @ defgroup publicAuth Authentication
* @ ingroup public */
/** @ defgroup publicServices Access to external services
* @ ingroup public */
/** @ defgroup publicConfig Configuration
* @ ingroup public */
/** @ defgroup publicLang Internationalization
* @ ingroup publicConfig */
/** @ defgroup publicOutput HTML output
* @ ingroup publicConfig */
/** @ defgroup publicPGTStorage PGT storage
* @ ingroup publicConfig */
/** @ defgroup publicDebug Debugging
* @ ingroup public */
/** @defgroup internal Implementation */
/** @ defgroup internalAuthentication Authentication
* @ ingroup internal */
/** @ defgroup internalBasic CAS Basic client features ( CAS 1.0 , Service Tickets )
* @ ingroup internal */
/** @ defgroup internalProxy CAS Proxy features ( CAS 2.0 , Proxy Granting Tickets )
* @ ingroup internal */
/** @ defgroup internalSAML CAS SAML features ( SAML 1.1 )
* @ ingroup internal */
/** @ defgroup internalPGTStorage PGT storage
* @ ingroup internalProxy */
/** @ defgroup internalPGTStorageDb PGT storage in a database
* @ ingroup internalPGTStorage */
/** @ defgroup internalPGTStorageFile PGT storage on the filesystem
* @ ingroup internalPGTStorage */
/** @ defgroup internalCallback Callback from the CAS server
* @ ingroup internalProxy */
/** @ defgroup internalProxyServices Proxy other services
* @ ingroup internalProxy */
/** @ defgroup internalService CAS client features ( CAS 2.0 , Proxied service )
* @ ingroup internal */
/** @ defgroup internalConfig Configuration
* @ ingroup internal */
/** @ defgroup internalBehave Internal behaviour of phpCAS
* @ ingroup internalConfig */
/** @ defgroup internalOutput HTML output
* @ ingroup internalConfig */
/** @ defgroup internalLang Internationalization
* @ ingroup internalConfig
*
* To add a new language :
* - 1. define a new constant PHPCAS_LANG_XXXXXX in CAS / CAS . php
* - 2. copy any file from CAS / languages to CAS / languages / XXXXXX . php
* - 3. Make the translations
*/
/** @ defgroup internalDebug Debugging
* @ ingroup internal */
/** @ defgroup internalMisc Miscellaneous
* @ ingroup internal */
// ########################################################################
// EXAMPLES
/**
* @ example example_simple . php
*/
/**
* @ example example_service . php
*/
/**
* @ example example_service_that_proxies . php
*/
/**
* @ example example_service_POST . php
*/
/**
* @ example example_proxy_serviceWeb . php
*/
/**
* @ example example_proxy_serviceWeb_chaining . php
*/
/**
* @ example example_proxy_POST . php
*/
/**
* @ example example_proxy_GET . php
*/
/**
* @ example example_lang . php
*/
/**
* @ example example_html . php
*/
/**
* @ example example_pgt_storage_file . php
*/
/**
* @ example example_pgt_storage_db . php
*/
/**
* @ example example_gateway . php
*/
/**
* @ example example_logout . php
*/
/**
* @ example example_rebroadcast . php
*/
/**
* @ example example_custom_urls . php
*/
/**
* @ example example_advanced_saml11 . php
*/
