function _checkGoto($a_target)
{
global $objDefinition, $ilPluginAdmin, $ilUser;
if (is_object($ilPluginAdmin)) {
// get user interface plugins
$pl_names = $ilPluginAdmin->getActivePluginsForSlot(IL_COMP_SERVICE, "UIComponent", "uihk");
// search
foreach ($pl_names as $pl) {
$ui_plugin = ilPluginAdmin::getPluginObject(IL_COMP_SERVICE, "UIComponent", "uihk", $pl);
$gui_class = $ui_plugin->getUIClassInstance();
$resp = $gui_class->checkGotoHook($a_target);
if ($resp["target"] !== false) {
$a_target = $resp["target"];
break;
}
}
}
if ($a_target == "") {
return false;
}
$t_arr = explode("_", $a_target);
$type = $t_arr[0];
if ($type == "git") {
$type = "glo";
}
if ($type == "pg" | $type == "st") {
$type = "lm";
}
$class = $objDefinition->getClassName($type);
if ($class == "") {
return false;
}
$location = $objDefinition->getLocation($type);
$full_class = "ilObj" . $class . "Access";
include_once $location . "/class." . $full_class . ".php";
$ret = call_user_func(array($full_class, "_checkGoto"), $a_target);
// if no access and repository object => check for parent course/group
if (!$ret && !stristr($a_target, "_wsp") && $ilUser->getId() != ANONYMOUS_USER_ID && !$objDefinition->isAdministrationObject($type) && $objDefinition->isRBACObject($type) && $t_arr[1]) {
global $tree, $rbacsystem, $ilAccess;
// original type "pg" => pg_<page_id>[_<ref_id>]
if ($t_arr[0] == "pg") {
if (isset($t_arr[2])) {
$ref_id = $t_arr[2];
} else {
$lm_id = ilLMObject::_lookupContObjID($t_arr[1]);
$ref_id = ilObject::_getAllReferences($lm_id);
if ($ref_id) {
$ref_id = array_shift($ref_id);
}
}
} else {
$ref_id = $t_arr[1];
}
include_once "Services/Membership/classes/class.ilParticipants.php";
$block_obj = array();
// walk path to find parent container
$path = $tree->getPathId($ref_id);
array_pop($path);
foreach ($path as $path_ref_id) {
$redirect_infopage = false;
$add_member_role = false;
$ptype = ilObject::_lookupType($path_ref_id, true);
$pobj_id = ilObject::_lookupObjId($path_ref_id);
// core checks: timings/object-specific
if (!$ilAccess->doActivationCheck("read", "", $path_ref_id, $ilUser->getId(), $pobj_id, $ptype) || !$ilAccess->doStatusCheck("read", "", $path_ref_id, $ilUser->getId(), $pobj_id, $ptype)) {
// object in path is inaccessible - aborting
return false;
} else {
if ($ptype == "crs") {
// check if already participant
include_once "Modules/Course/classes/class.ilCourseParticipant.php";
$participants = new ilCourseParticipant($pobj_id, $ilUser->getId());
if (!$participants->isAssigned()) {
// subscription currently possible?
include_once "Modules/Course/classes/class.ilObjCourse.php";
if (ilObjCourse::_isActivated($pobj_id) && ilObjCourse::_registrationEnabled($pobj_id)) {
$block_obj[] = $path_ref_id;
$add_member_role = true;
} else {
$redirect_infopage = true;
}
}
} else {
if ($ptype == "grp") {
// check if already participant
include_once "Modules/Group/classes/class.ilGroupParticipants.php";
if (!ilGroupParticipants::_isParticipant($path_ref_id, $ilUser->getId())) {
// subscription currently possible?
include_once "Modules/Group/classes/class.ilObjGroup.php";
$group_obj = new ilObjGroup($path_ref_id);
if ($group_obj->isRegistrationEnabled()) {
$block_obj[] = $path_ref_id;
$add_member_role = true;
} else {
$redirect_infopage = true;
}
}
}
}
}
// add members roles for all "blocking" objects
if ($add_member_role) {
// cannot join? goto will never work, so redirect to current object
$rbacsystem->resetPACache($ilUser->getId(), $path_ref_id);
if (!$rbacsystem->checkAccess("join", $path_ref_id)) {
$redirect_infopage = true;
} else {
$rbacsystem->addTemporaryRole($ilUser->getId(), ilParticipants::getDefaultMemberRole($path_ref_id));
}
}
// redirect to infopage of 1st blocking object in path
if ($redirect_infopage) {
if ($rbacsystem->checkAccess("visible", $path_ref_id)) {
ilUtil::redirect("ilias.php?baseClass=ilRepositoryGUI" . "&ref_id=" . $path_ref_id . "&cmd=infoScreen");
} else {
return false;
}
}
}
// check if access will be possible with all (possible) member roles added
$rbacsystem->resetPACache($ilUser->getId(), $ref_id);
if ($rbacsystem->checkAccess("read", $ref_id) && sizeof($block_obj)) {
// this won't work with lm-pages (see above)
// include_once "Services/Link/classes/class.ilLink.php";
// $_SESSION["pending_goto"] = ilLink::_getStaticLink($ref_id, $type);
// keep original target
$_SESSION["pending_goto"] = "goto.php?target=" . $a_target;
// redirect to 1st non-member object in path
ilUtil::redirect("ilias.php?baseClass=ilRepositoryGUI" . "&ref_id=" . array_shift($block_obj));
}
}
return $ret;
}
