ilWACSignedPath Class Reference

Class ilWACSignedPath. More...

Collaboration diagram for ilWACSignedPath:

Public Member Functions
	__construct (ilWACPath $ilWACPath, GlobalHttpState $httpState, CookieFactory $cookieFactory)
	ilWACSignedPath constructor. More...
	getSignedPath ()
	isFolderSigned ()
	isFolderTokenValid ()
	revalidatingFolderToken ()
	isSignedPath ()
	isSignedPathValid ()
	getTokenInstance ()
	setTokenInstance (ilWACToken $token_instance)
	getType ()
	setType ($type)
	getPathObject ()
	setPathObject (ilWACPath $path_object)
	buildAndSetTokenInstance ($timestamp=0, $ttl=0)
	isChecked ()
	setChecked ($checked)

Static Public Member Functions
static	signFile ($path_to_file)
static	signFolderOfStartFile ($start_file_path)
static	getTokenMaxLifetimeInSeconds ()
static	setTokenMaxLifetimeInSeconds ($token_max_lifetime_in_seconds)
static	getCookieMaxLifetimeInSeconds ()
static	setCookieMaxLifetimeInSeconds ($cookie_max_lifetime_in_seconds)

Data Fields
const	WAC_TOKEN_ID = 'il_wac_token'
const	WAC_TIMESTAMP_ID = 'il_wac_ts'
const	WAC_TTL_ID = 'il_wac_ttl'
const	TS_SUFFIX = 'ts'
const	TTL_SUFFIX = 'ttl'
const	MAX_LIFETIME = 600

Protected Member Functions
	saveFolderToken ()
	checkToken ()
	buildTokenInstance ($timestamp=0, $ttl=0)
	getRelevantLifeTime ()

Protected Attributes
	$path_object = null
	$token_instance = null
	$type = PathType::FILE
	$checked = false

Static Protected Attributes
static	$token_max_lifetime_in_seconds = 20
static	$cookie_max_lifetime_in_seconds = 300

Private Attributes
	$httpService
	$cookieFactory

Detailed Description

Class ilWACSignedPath.

Author

Fabian Schmid fs@st.nosp@m.uder.nosp@m.-raim.nosp@m.ann..nosp@m.ch

Version

1.0.0

Definition at line 22 of file class.ilWACSignedPath.php.

Constructor & Destructor Documentation

__construct()

ilWACSignedPath::__construct	(	ilWACPath	$ilWACPath,
		GlobalHttpState	$httpState,
		CookieFactory	$cookieFactory
	)

ilWACSignedPath constructor.

Parameters

\ilWACPath	$ilWACPath
GlobalHttpState	$httpState
CookieFactory	$cookieFactory

Definition at line 72 of file class.ilWACSignedPath.php.

References $cookieFactory, and setPathObject().

    {
        $this->setPathObject($ilWACPath);
        $this->httpService = $httpState;
        $this->cookieFactory = $cookieFactory;
    }

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Member Function Documentation

buildAndSetTokenInstance()

ilWACSignedPath::buildAndSetTokenInstance	(		$timestamp = 0,
			$ttl = 0
	)

Parameters

int	$timestamp
int	$ttl

Returns

void

Exceptions

Definition at line 414 of file class.ilWACSignedPath.php.

References $timestamp, buildTokenInstance(), and setTokenInstance().

Referenced by isFolderSigned(), isSignedPathValid(), and revalidatingFolderToken().

    {
        assert(is_int($timestamp));
        assert(is_int($ttl));

        $this->setTokenInstance($this->buildTokenInstance($timestamp, $ttl));
    }

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buildTokenInstance()

ilWACSignedPath::buildTokenInstance (   $timestamp = 0,   $ttl = 0  )

protected

Parameters

int	$timestamp
int	$ttl

Returns

ilWACToken

Exceptions

ilWACException

Definition at line 382 of file class.ilWACSignedPath.php.

References $client, $timestamp, ilWACException\CODE_NO_TYPE, getPathObject(), and getType().

Referenced by buildAndSetTokenInstance(), checkToken(), and isFolderSigned().

    {
        assert(is_int($timestamp));
        assert(is_int($ttl));
        if (!$this->getType()) {
            throw new ilWACException(ilWACException::CODE_NO_TYPE);
        }

        switch ($this->getType()) {
            case PathType::FOLDER:
                $path = $this->getPathObject()->getSecurePath();
                break;
            default:
                $path = $this->getPathObject()->getPathWithoutQuery();
                break;
        }

        $client = $this->getPathObject()->getClient();
        $timestamp = $timestamp !== 0 ? $timestamp : $this->getPathObject()->getTimestamp();
        $ttl = $ttl !== 0 ? $ttl : $this->getPathObject()->getTTL();

        return new ilWACToken($path, $client, $timestamp, $ttl);
    }

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checkToken()

ilWACSignedPath::checkToken ( )

protected

Returns

bool

Exceptions

Definition at line 346 of file class.ilWACSignedPath.php.

References buildTokenInstance(), getPathObject(), and setChecked().

Referenced by isFolderTokenValid(), and isSignedPathValid().

    {
        $request_token_string = $this->getPathObject()->getToken();
        $request_ttl = $this->getPathObject()->getTTL();
        $request_timestamp = $this->getPathObject()->getTimestamp();
        $current_timestamp = time();

        $timestamp_valid = ($current_timestamp < ($request_timestamp + $request_ttl));

        if (!$timestamp_valid) {
            $this->setChecked(true);

            return false;
        }

        $simulated_token = $this->buildTokenInstance($request_timestamp, $request_ttl);
        $simulated_token_string = $simulated_token->getToken();
        $token_valid = ($simulated_token_string == $request_token_string);

        if (!$token_valid) {
            $this->setChecked(true);

            return false;
        }

        return true;
    }

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getCookieMaxLifetimeInSeconds()

static ilWACSignedPath::getCookieMaxLifetimeInSeconds ( )

static

Returns

int

Definition at line 451 of file class.ilWACSignedPath.php.

Referenced by ilObjSCORMInitData\getIliasScormVars(), and ilSCORM13Player\getPlayer().

    {
        return self::$cookie_max_lifetime_in_seconds;
    }

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getPathObject()

ilWACSignedPath::getPathObject

(

)

Returns

ilWACPath

Definition at line 326 of file class.ilWACSignedPath.php.

References $path_object.

Referenced by buildTokenInstance(), checkToken(), getRelevantLifeTime(), getSignedPath(), isFolderSigned(), isSignedPath(), isSignedPathValid(), revalidatingFolderToken(), and saveFolderToken().

    {
        return $this->path_object;
    }

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getRelevantLifeTime()

ilWACSignedPath::getRelevantLifeTime ( )

protected

Returns

int

Definition at line 477 of file class.ilWACSignedPath.php.

References getPathObject(), and getType().

    {
        $request_ttl = $this->getPathObject()->getTTL();
        if ($request_ttl > 0) {
            return $request_ttl;
        }
        switch ($this->getType()) {
            case PathType::FOLDER:
                $life_time = self::getCookieMaxLifetimeInSeconds();
                break;
            case PathType::FILE:
                $life_time = self::getTokenMaxLifetimeInSeconds();
                break;
            default:
                $life_time = 0;
                break;
        }

        return $life_time;
    }

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getSignedPath()

ilWACSignedPath::getSignedPath

(

)

Returns

string

Exceptions

ilWACException

Definition at line 84 of file class.ilWACSignedPath.php.

References getPathObject(), getTokenInstance(), getType(), and ilWACException\WRONG_PATH_TYPE.

    {
        if ($this->getType() !== PathType::FILE) {
            throw new ilWACException(ilWACException::WRONG_PATH_TYPE);
        }
        if (!$this->getPathObject()->getOriginalRequest()) {
            return '';
        }
        if (!$this->getPathObject()->fileExists()) {
            //                  return $this->getPathObject()->getOriginalRequest();
        }

        if (strpos($this->getPathObject()->getPath(), '?')) {
            $path = $this->getPathObject()->getPath() . '&' . self::WAC_TOKEN_ID . '='
                    . $this->getTokenInstance()->getToken();
        } else {
            $path = $this->getPathObject()->getPath() . '?' . self::WAC_TOKEN_ID . '='
                    . $this->getTokenInstance()->getToken();
        }

        $path = $path . '&' . self::WAC_TTL_ID . '=' . $this->getTokenInstance()->getTTL();
        $path = $path . '&' . self::WAC_TIMESTAMP_ID . '='
                . $this->getTokenInstance()->getTimestamp();

        return $path;
    }

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getTokenInstance()

ilWACSignedPath::getTokenInstance

(

)

Returns

ilWACToken

Definition at line 287 of file class.ilWACSignedPath.php.

References $token_instance.

Referenced by getSignedPath(), revalidatingFolderToken(), and saveFolderToken().

    {
        return $this->token_instance;
    }

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getTokenMaxLifetimeInSeconds()

static ilWACSignedPath::getTokenMaxLifetimeInSeconds ( )

static

Returns

int

Definition at line 426 of file class.ilWACSignedPath.php.

Referenced by ilWACToken\__construct(), ILIAS\OnScreenChat\Repository\Subscriber\getDataByUserIds(), and ilWACTokenTest\testFileToken().

    {
        return self::$token_max_lifetime_in_seconds;
    }

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getType()

ilWACSignedPath::getType

(

)

Returns

int

Definition at line 306 of file class.ilWACSignedPath.php.

References $type.

Referenced by buildTokenInstance(), getRelevantLifeTime(), getSignedPath(), and revalidatingFolderToken().

    {
        return (int) $this->type;
    }

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isChecked()

ilWACSignedPath::isChecked

(

)

Returns

bool

Definition at line 502 of file class.ilWACSignedPath.php.

References $checked.

    {
        return (bool) $this->checked;
    }

isFolderSigned()

ilWACSignedPath::isFolderSigned

(

)

Returns

bool

Definition at line 115 of file class.ilWACSignedPath.php.

References $name, buildAndSetTokenInstance(), buildTokenInstance(), getPathObject(), and setType().

Referenced by isFolderTokenValid().

    {
        $jar = $this->httpService->cookieJar();
        $cookies = $jar->getAll();

        $this->setType(PathType::FOLDER);
        $plain_token = $this->buildTokenInstance();
        $name = $plain_token->getHashedId();

        // Token
        $default_token = '';
        $token_cookie_value = $this->httpService->request()->getCookieParams()[$name] ?? $default_token;
        // Timestamp
        $default_timestamp = 0;
        $timestamp_cookie_value = $this->httpService->request()->getCookieParams()[$name . self::TS_SUFFIX] ?? $default_timestamp;
        $timestamp_cookie_value = intval($timestamp_cookie_value);
        // TTL
        $default_ttl = 0;
        $ttl_cookie_value = $this->httpService->request()->getCookieParams()[$name . self::TTL_SUFFIX] ?? $default_ttl;
        $ttl_cookie_value = intval($ttl_cookie_value);

        $this->getPathObject()->setToken($token_cookie_value);
        $this->getPathObject()->setTimestamp($timestamp_cookie_value);
        $this->getPathObject()->setTTL($ttl_cookie_value);
        $this->buildAndSetTokenInstance();

        return $this->getPathObject()->hasToken();
    }

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isFolderTokenValid()

ilWACSignedPath::isFolderTokenValid

(

)

Returns

bool

Exceptions

ilWACException

Definition at line 149 of file class.ilWACSignedPath.php.

References checkToken(), and isFolderSigned().

    {
        if (!$this->isFolderSigned()) {
            return false;
        }

        return $this->checkToken();
    }

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isSignedPath()

ilWACSignedPath::isSignedPath

(

)

Returns

bool

Definition at line 228 of file class.ilWACSignedPath.php.

References getPathObject().

    {
        return ($this->getPathObject()->hasToken() && $this->getPathObject()->hasTimestamp()
                && $this->getPathObject()->hasTTL());
    }

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isSignedPathValid()

ilWACSignedPath::isSignedPathValid

(

)

Returns

bool

Exceptions

ilWACException

Definition at line 239 of file class.ilWACSignedPath.php.

References buildAndSetTokenInstance(), checkToken(), and getPathObject().

    {
        $this->buildAndSetTokenInstance($this->getPathObject()->getTimestamp(), $this->getPathObject()->getTTL());

        return $this->checkToken();
    }

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revalidatingFolderToken()

ilWACSignedPath::revalidatingFolderToken

(

)

Returns

bool

Definition at line 209 of file class.ilWACSignedPath.php.

References buildAndSetTokenInstance(), getPathObject(), getTokenInstance(), getType(), and saveFolderToken().

    {
        if ($this->getType() !== PathType::FOLDER) {
            return false;
        }
        $this->buildAndSetTokenInstance(time(), $this->getPathObject()->getTTL());
        $this->getPathObject()->setTTL($this->getTokenInstance()->getTTL());
        $this->getPathObject()->setTimestamp($this->getTokenInstance()->getTimestamp());
        $this->getPathObject()->setToken($this->getTokenInstance()->getToken());

        $this->saveFolderToken();

        return true;
    }

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saveFolderToken()

ilWACSignedPath::saveFolderToken ( )

protected

Returns

void

Definition at line 162 of file class.ilWACSignedPath.php.

References getPathObject(), and getTokenInstance().

Referenced by revalidatingFolderToken().

    {
        $ttl = $this->getPathObject()->getTTL();
        $cookie_lifetime = $ttl !== 0 ? $ttl : self::getCookieMaxLifetimeInSeconds();
        $id = $this->getTokenInstance()->getHashedId();
        $expire = time() + $cookie_lifetime + 3600;
        $secure = true;
        $domain = null;
        $http_only = true;
        $path = '/';

        $tokenCookie = $this->cookieFactory->create($id, $this->getTokenInstance()->getToken())
                                           ->withExpires($expire)
                                           ->withPath($path)
                                           ->withSecure($secure)
                                           ->withDomain($domain)
                                           ->withHttpOnly($http_only);

        $timestampCookie = $this->cookieFactory->create($id . self::TS_SUFFIX, time())
                                               ->withExpires($expire)
                                               ->withPath($path)
                                               ->withDomain($domain)
                                               ->withSecure($secure)
                                               ->withHttpOnly($http_only);

        $ttlCookie = $this->cookieFactory->create($id . self::TTL_SUFFIX, $cookie_lifetime)
                                         ->withExpires($expire)
                                         ->withPath($path)
                                         ->withDomain($domain)
                                         ->withSecure($secure)
                                         ->withHttpOnly($http_only);

        $jar = $this->httpService->cookieJar()->with($tokenCookie)
                                 ->with($timestampCookie)
                                 ->with($ttlCookie);

        // FIX: currently the cookies are never stored, we must use setcookie
        foreach ($jar->getAll() as $cookie) {
            setcookie($cookie->getName(), $cookie->getValue(), $cookie->getExpires(), $cookie->getPath(),
                $cookie->getDomain(), $cookie->getSecure(), $cookie->getHttpOnly());
        }
    }

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setChecked()

ilWACSignedPath::setChecked

(

$checked

)

Parameters

bool

$checked

Returns

void

Definition at line 512 of file class.ilWACSignedPath.php.

References $checked.

Referenced by checkToken().

    {
        assert(is_bool($checked));
        $this->checked = $checked;
    }

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setCookieMaxLifetimeInSeconds()

static ilWACSignedPath::setCookieMaxLifetimeInSeconds (   $cookie_max_lifetime_in_seconds )

static

Parameters

int

$cookie_max_lifetime_in_seconds

Returns

void

Exceptions

Definition at line 464 of file class.ilWACSignedPath.php.

References $cookie_max_lifetime_in_seconds, and ilWACException\MAX_LIFETIME.

    {
        assert(is_int($cookie_max_lifetime_in_seconds));
        if ($cookie_max_lifetime_in_seconds > self::MAX_LIFETIME) {
            throw new ilWACException(ilWACException::MAX_LIFETIME);
        }
        self::$cookie_max_lifetime_in_seconds = $cookie_max_lifetime_in_seconds;
    }

setPathObject()

ilWACSignedPath::setPathObject

(

ilWACPath

$path_object

)

Parameters

ilWACPath

$path_object

Returns

void

Definition at line 336 of file class.ilWACSignedPath.php.

References $path_object.

Referenced by __construct().

    {
        $this->path_object = $path_object;
    }

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setTokenInstance()

ilWACSignedPath::setTokenInstance

(

ilWACToken

$token_instance

)

Parameters

ilWACToken

$token_instance

Returns

void

Definition at line 297 of file class.ilWACSignedPath.php.

References $token_instance.

Referenced by buildAndSetTokenInstance().

    {
        $this->token_instance = $token_instance;
    }

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setTokenMaxLifetimeInSeconds()

static ilWACSignedPath::setTokenMaxLifetimeInSeconds (   $token_max_lifetime_in_seconds )

static

Parameters

int

$token_max_lifetime_in_seconds

Returns

void

Exceptions

Definition at line 438 of file class.ilWACSignedPath.php.

References $token_max_lifetime_in_seconds, and ilWACException\MAX_LIFETIME.

Referenced by ilCertificateSettingsFormRepository\createForm(), ilObjPortfolioGUI\exportPDF(), ILIAS\OnScreenChat\Repository\Subscriber\getDataByUserIds(), ilWACTokenTest\getModifiedSignedPath(), assQuestion\getSuggestedSolutionOutput(), ilChatroomViewGUI\lostConnection(), ilObjTestGUI\printobject(), ilObjTestGUI\reviewobject(), ilObjCertificateSettingsGUI\settings(), and ilWACTokenTest\testFileToken().

    {
        assert(is_int($token_max_lifetime_in_seconds));
        if ($token_max_lifetime_in_seconds > self::MAX_LIFETIME) {
            throw new ilWACException(ilWACException::MAX_LIFETIME);
        }
        self::$token_max_lifetime_in_seconds = $token_max_lifetime_in_seconds;
    }

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setType()

ilWACSignedPath::setType

(

$type

)

Parameters

int

$type

Returns

void

Definition at line 316 of file class.ilWACSignedPath.php.

References $type.

Referenced by isFolderSigned().

    {
        assert(is_int($type));
        $this->type = $type;
    }

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signFile()

static ilWACSignedPath::signFile (   $path_to_file )

static

Parameters

string

$path_to_file

Returns

string

Exceptions

ilWACException

Definition at line 254 of file class.ilWACSignedPath.php.

References ILIAS\FileDelivery\http().

Referenced by ilObjUser\_getPersonalPicturePath(), ilRTE\_replaceMediaObjectImageSrc(), ilCertificateSettingsFormRepository\createForm(), ilMediaCastTableGUI\fillRow(), ilPollBlockGUI\fillRow(), ilMediaPoolTableGUI\fillRow(), ilObjStyleSheet\getContentStylePath(), ilPublicUserProfileGUI\getEmbeddable(), ilDclMobRecordRepresentation\getHTML(), ilBadgeRenderer\getHTML(), ilWACTokenTest\getModifiedSignedPath(), assImagemapQuestionGUI\getPreview(), ilPreviewGUI\getPreviewHTML(), assMatchingQuestionGUI\getSolutionOutput(), assQuestion\getSuggestedSolutionOutput(), assImagemapQuestionGUI\getTestOutput(), ilObjMediaObject\getXML(), ilUserCertificateGUI\listCertificates(), ilObjPortfolioBaseGUI\renderFullscreenHeader(), ilObjBlogGUI\renderFullscreenHeader(), ilObjCertificateSettingsGUI\settings(), ilObjMediaCastGUI\showGallery(), assImagemapQuestionGUI\supportsIntermediateSolutionOutput(), ilWACCheckingInstanceTest\testBasicWithFileSigning(), and ilWACTokenTest\testFileToken().

    {
        if (!$path_to_file) {
            return '';
        }
        $ilWACPath = new ilWACPath($path_to_file);
        if (!$ilWACPath->getClient()) {
            return $path_to_file;
        }
        $obj = new self($ilWACPath, self::http(), new CookieFactoryImpl());
        $obj->setType(PathType::FILE);
        $obj->buildAndSetTokenInstance(time(), self::getTokenMaxLifetimeInSeconds());

        return $obj->getSignedPath();
    }

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signFolderOfStartFile()

static ilWACSignedPath::signFolderOfStartFile (   $start_file_path )

static

Parameters

string

$start_file_path

Returns

void

Definition at line 275 of file class.ilWACSignedPath.php.

References ILIAS\FileDelivery\http().

Referenced by ilSCORMPresentationGUI\frameset(), ilSCORM13Player\getPlayer(), ilExerciseManagementGUI\openSubmissionViewObject(), ilSCORM13Player\pingSession(), ilSCORMPresentationGUI\pingSession(), ilObjFileBasedLMGUI\showLearningModule(), ilWACCheckingInstanceTest\testBasicWithFolderSigning(), and ilWACTokenTest\testCookieGeneration().

    {
        $obj = new self(new ilWACPath($start_file_path), self::http(), new CookieFactoryImpl());
        $obj->setType(PathType::FOLDER);
        $obj->buildAndSetTokenInstance(time(), self::getCookieMaxLifetimeInSeconds());
        $obj->saveFolderToken();
    }

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Field Documentation

$checked

ilWACSignedPath::$checked = false

protected

Definition at line 54 of file class.ilWACSignedPath.php.

Referenced by isChecked(), and setChecked().

$cookie_max_lifetime_in_seconds

ilWACSignedPath::$cookie_max_lifetime_in_seconds = 300

staticprotected

Definition at line 50 of file class.ilWACSignedPath.php.

Referenced by setCookieMaxLifetimeInSeconds().

$cookieFactory

CookieFactory ilWACSignedPath::$cookieFactory

private

Definition at line 62 of file class.ilWACSignedPath.php.

Referenced by __construct().

$httpService

ILIAS DI HTTPServices ilWACSignedPath::$httpService

private

Definition at line 58 of file class.ilWACSignedPath.php.

$path_object

ilWACSignedPath::$path_object = null

protected

Definition at line 34 of file class.ilWACSignedPath.php.

Referenced by getPathObject(), and setPathObject().

$token_instance

ilWACSignedPath::$token_instance = null

protected

Definition at line 38 of file class.ilWACSignedPath.php.

Referenced by getTokenInstance(), and setTokenInstance().

$token_max_lifetime_in_seconds

ilWACSignedPath::$token_max_lifetime_in_seconds = 20

staticprotected

Definition at line 46 of file class.ilWACSignedPath.php.

Referenced by setTokenMaxLifetimeInSeconds().

$type

ilWACSignedPath::$type = PathType::FILE

protected

Definition at line 42 of file class.ilWACSignedPath.php.

Referenced by getType(), and setType().

MAX_LIFETIME

const ilWACSignedPath::MAX_LIFETIME = 600

Definition at line 30 of file class.ilWACSignedPath.php.

TS_SUFFIX

const ilWACSignedPath::TS_SUFFIX = 'ts'

Definition at line 28 of file class.ilWACSignedPath.php.

TTL_SUFFIX

const ilWACSignedPath::TTL_SUFFIX = 'ttl'

Definition at line 29 of file class.ilWACSignedPath.php.

WAC_TIMESTAMP_ID

const ilWACSignedPath::WAC_TIMESTAMP_ID = 'il_wac_ts'

Definition at line 26 of file class.ilWACSignedPath.php.

Referenced by ilWACPath\handleParameters(), and ilWACPath\setTimestamp().

WAC_TOKEN_ID

const ilWACSignedPath::WAC_TOKEN_ID = 'il_wac_token'

Definition at line 25 of file class.ilWACSignedPath.php.

Referenced by ilWACPath\handleParameters(), and ilWACPath\setToken().

WAC_TTL_ID

const ilWACSignedPath::WAC_TTL_ID = 'il_wac_ttl'

Definition at line 27 of file class.ilWACSignedPath.php.

Referenced by ilWACPath\handleParameters(), and ilWACPath\setTTL().

---

The documentation for this class was generated from the following file:

• Services/WebAccessChecker/classes/class.ilWACSignedPath.php