mirror of
https://github.com/gyurix1968/guacamole-client.git
synced 2025-10-31 00:53:21 +00:00
GUAC-1132: Split non-database permission service functions into interfaces.
This commit is contained in:
Michael Jumper
@@ -35,7 +35,7 @@ import org.glyptodon.guacamole.auth.jdbc.user.ModeledUser;
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*
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* @author Michael Jumper
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*/
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public class ConnectionGroupPermissionService extends ObjectPermissionService {
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public class ConnectionGroupPermissionService extends ModeledObjectPermissionService {
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/**
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* Mapper for connection group permissions.
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@@ -35,7 +35,7 @@ import org.glyptodon.guacamole.auth.jdbc.user.ModeledUser;
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*
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* @author Michael Jumper
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*/
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public class ConnectionPermissionService extends ObjectPermissionService {
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public class ConnectionPermissionService extends ModeledObjectPermissionService {
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/**
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* Mapper for connection permissions.
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@@ -0,0 +1,210 @@
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/*
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* Copyright (C) 2015 Glyptodon LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package org.glyptodon.guacamole.auth.jdbc.permission;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashSet;
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import org.glyptodon.guacamole.auth.jdbc.user.AuthenticatedUser;
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import org.glyptodon.guacamole.auth.jdbc.user.ModeledUser;
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import org.glyptodon.guacamole.GuacamoleException;
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import org.glyptodon.guacamole.GuacamoleSecurityException;
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import org.glyptodon.guacamole.net.auth.permission.ObjectPermission;
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import org.glyptodon.guacamole.net.auth.permission.ObjectPermissionSet;
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/**
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* Service which provides convenience methods for creating, retrieving, and
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* deleting object permissions within a backend database model. This service
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* will automatically enforce the permissions of the current user.
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*
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* @author Michael Jumper
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*/
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public abstract class ModeledObjectPermissionService
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extends ModeledPermissionService<ObjectPermissionSet, ObjectPermission, ObjectPermissionModel>
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implements ObjectPermissionService {
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@Override
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protected abstract ObjectPermissionMapper getPermissionMapper();
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@Override
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protected ObjectPermission getPermissionInstance(ObjectPermissionModel model) {
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return new ObjectPermission(model.getType(), model.getObjectIdentifier());
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}
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@Override
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protected ObjectPermissionModel getModelInstance(ModeledUser targetUser,
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ObjectPermission permission) {
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ObjectPermissionModel model = new ObjectPermissionModel();
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// Populate model object with data from user and permission
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model.setUserID(targetUser.getModel().getObjectID());
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model.setUsername(targetUser.getModel().getIdentifier());
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model.setType(permission.getType());
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model.setObjectIdentifier(permission.getObjectIdentifier());
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return model;
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}
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/**
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* Determines whether the current user has permission to update the given
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* target user, adding or removing the given permissions. Such permission
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* depends on whether the current user is a system administrator, whether
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* they have explicit UPDATE permission on the target user, and whether
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* they have explicit ADMINISTER permission on all affected objects.
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*
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* @param user
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* The user who is changing permissions.
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*
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* @param targetUser
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* The user whose permissions are being changed.
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*
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* @param permissions
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* The permissions that are being added or removed from the target
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* user.
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*
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* @return
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* true if the user has permission to change the target users
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* permissions as specified, false otherwise.
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*
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* @throws GuacamoleException
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* If an error occurs while checking permission status, or if
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* permission is denied to read the current user's permissions.
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*/
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protected boolean canAlterPermissions(AuthenticatedUser user, ModeledUser targetUser,
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Collection<ObjectPermission> permissions)
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throws GuacamoleException {
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// A system adminstrator can do anything
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if (user.getUser().isAdministrator())
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return true;
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// Verify user has update permission on the target user
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ObjectPermissionSet userPermissionSet = user.getUser().getUserPermissions();
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if (!userPermissionSet.hasPermission(ObjectPermission.Type.UPDATE, targetUser.getIdentifier()))
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return false;
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// Produce collection of affected identifiers
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Collection<String> affectedIdentifiers = new HashSet(permissions.size());
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for (ObjectPermission permission : permissions)
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affectedIdentifiers.add(permission.getObjectIdentifier());
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// Determine subset of affected identifiers that we have admin access to
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ObjectPermissionSet affectedPermissionSet = getPermissionSet(user, user.getUser());
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Collection<String> allowedSubset = affectedPermissionSet.getAccessibleObjects(
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Collections.singleton(ObjectPermission.Type.ADMINISTER),
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affectedIdentifiers
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);
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// The permissions can be altered if and only if the set of objects we
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// are allowed to administer is equal to the set of objects we will be
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// affecting.
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return affectedIdentifiers.size() == allowedSubset.size();
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}
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@Override
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public void createPermissions(AuthenticatedUser user, ModeledUser targetUser,
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Collection<ObjectPermission> permissions)
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throws GuacamoleException {
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// Create permissions only if user has permission to do so
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if (canAlterPermissions(user, targetUser, permissions)) {
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Collection<ObjectPermissionModel> models = getModelInstances(targetUser, permissions);
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getPermissionMapper().insert(models);
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return;
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}
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// User lacks permission to create object permissions
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throw new GuacamoleSecurityException("Permission denied.");
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}
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@Override
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public void deletePermissions(AuthenticatedUser user, ModeledUser targetUser,
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Collection<ObjectPermission> permissions)
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throws GuacamoleException {
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// Delete permissions only if user has permission to do so
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if (canAlterPermissions(user, targetUser, permissions)) {
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Collection<ObjectPermissionModel> models = getModelInstances(targetUser, permissions);
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getPermissionMapper().delete(models);
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return;
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}
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// User lacks permission to delete object permissions
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throw new GuacamoleSecurityException("Permission denied.");
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}
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@Override
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public ObjectPermission retrievePermission(AuthenticatedUser user,
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ModeledUser targetUser, ObjectPermission.Type type,
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String identifier) throws GuacamoleException {
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// Retrieve permissions only if allowed
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if (canReadPermissions(user, targetUser)) {
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// Read permission from database, return null if not found
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ObjectPermissionModel model = getPermissionMapper().selectOne(targetUser.getModel(), type, identifier);
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if (model == null)
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return null;
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return getPermissionInstance(model);
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}
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// User cannot read this user's permissions
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throw new GuacamoleSecurityException("Permission denied.");
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}
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@Override
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public Collection<String> retrieveAccessibleIdentifiers(AuthenticatedUser user,
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ModeledUser targetUser, Collection<ObjectPermission.Type> permissions,
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Collection<String> identifiers) throws GuacamoleException {
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// Nothing is always accessible
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if (identifiers.isEmpty())
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return identifiers;
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// Retrieve permissions only if allowed
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if (canReadPermissions(user, targetUser)) {
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// If user is an admin, everything is accessible
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if (user.getUser().isAdministrator())
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return identifiers;
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// Otherwise, return explicitly-retrievable identifiers
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return getPermissionMapper().selectAccessibleIdentifiers(targetUser.getModel(), permissions, identifiers);
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}
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// User cannot read this user's permissions
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throw new GuacamoleSecurityException("Permission denied.");
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}
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}
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@@ -0,0 +1,196 @@
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/*
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* Copyright (C) 2015 Glyptodon LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
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||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package org.glyptodon.guacamole.auth.jdbc.permission;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.HashSet;
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import java.util.Set;
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import org.glyptodon.guacamole.auth.jdbc.user.AuthenticatedUser;
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import org.glyptodon.guacamole.auth.jdbc.user.ModeledUser;
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import org.glyptodon.guacamole.GuacamoleException;
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import org.glyptodon.guacamole.GuacamoleSecurityException;
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import org.glyptodon.guacamole.net.auth.permission.ObjectPermission;
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import org.glyptodon.guacamole.net.auth.permission.ObjectPermissionSet;
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import org.glyptodon.guacamole.net.auth.permission.Permission;
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import org.glyptodon.guacamole.net.auth.permission.PermissionSet;
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/**
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* Service which provides convenience methods for creating, retrieving, and
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* deleting permissions within a backend database model, and for obtaining the
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* permission sets that contain these permissions. This service will
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* automatically enforce the permissions of the current user.
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*
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* @author Michael Jumper
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* @param <PermissionSetType>
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* The type of permission sets this service provides access to.
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*
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* @param <PermissionType>
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* The type of permission this service provides access to.
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*
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* @param <ModelType>
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* The underlying model object used to represent PermissionType in the
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* database.
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*/
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public abstract class ModeledPermissionService<PermissionSetType extends PermissionSet<PermissionType>,
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PermissionType extends Permission, ModelType>
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implements PermissionService<PermissionSetType, PermissionType> {
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/**
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* Returns an instance of a mapper for the type of permission used by this
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* service.
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*
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* @return
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* A mapper which provides access to the model objects associated with
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* the permissions used by this service.
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*/
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protected abstract PermissionMapper<ModelType> getPermissionMapper();
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/**
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* Returns an instance of a permission which is based on the given model
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* object.
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*
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* @param model
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* The model object to use to produce the returned permission.
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*
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* @return
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* A permission which is based on the given model object.
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*/
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protected abstract PermissionType getPermissionInstance(ModelType model);
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/**
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* Returns a collection of permissions which are based on the models in
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* the given collection.
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*
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* @param models
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* The model objects to use to produce the permissions within the
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* returned set.
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*
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* @return
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* A set of permissions which are based on the models in the given
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* collection.
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*/
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protected Set<PermissionType> getPermissionInstances(Collection<ModelType> models) {
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// Create new collection of permissions by manually converting each model
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Set<PermissionType> permissions = new HashSet<PermissionType>(models.size());
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for (ModelType model : models)
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permissions.add(getPermissionInstance(model));
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return permissions;
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}
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/**
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* Returns an instance of a model object which is based on the given
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* permission and target user.
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*
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* @param targetUser
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* The user to whom this permission is granted.
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*
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* @param permission
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* The permission to use to produce the returned model object.
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*
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* @return
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* A model object which is based on the given permission and target
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* user.
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*/
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protected abstract ModelType getModelInstance(ModeledUser targetUser,
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PermissionType permission);
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/**
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* Returns a collection of model objects which are based on the given
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* permissions and target user.
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*
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* @param targetUser
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* The user to whom this permission is granted.
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*
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* @param permissions
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* The permissions to use to produce the returned model objects.
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*
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* @return
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* A collection of model objects which are based on the given
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* permissions and target user.
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*/
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protected Collection<ModelType> getModelInstances(ModeledUser targetUser,
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Collection<PermissionType> permissions) {
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// Create new collection of models by manually converting each permission
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Collection<ModelType> models = new ArrayList<ModelType>(permissions.size());
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for (PermissionType permission : permissions)
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models.add(getModelInstance(targetUser, permission));
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return models;
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}
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/**
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* Determines whether the given user can read the permissions currently
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* granted to the given target user. If the reading user and the target
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* user are not the same, then explicit READ or SYSTEM_ADMINISTER access is
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* required.
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*
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* @param user
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* The user attempting to read permissions.
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*
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* @param targetUser
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* The user whose permissions are being read.
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*
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* @return
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* true if permission is granted, false otherwise.
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*
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* @throws GuacamoleException
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* If an error occurs while checking permission status, or if
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* permission is denied to read the current user's permissions.
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*/
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protected boolean canReadPermissions(AuthenticatedUser user,
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ModeledUser targetUser) throws GuacamoleException {
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// A user can always read their own permissions
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if (user.getUser().getIdentifier().equals(targetUser.getIdentifier()))
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return true;
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// A system adminstrator can do anything
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if (user.getUser().isAdministrator())
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return true;
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// Can read permissions on target user if explicit READ is granted
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ObjectPermissionSet userPermissionSet = user.getUser().getUserPermissions();
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return userPermissionSet.hasPermission(ObjectPermission.Type.READ, targetUser.getIdentifier());
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}
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@Override
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public Set<PermissionType> retrievePermissions(AuthenticatedUser user,
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ModeledUser targetUser) throws GuacamoleException {
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// Retrieve permissions only if allowed
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if (canReadPermissions(user, targetUser))
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return getPermissionInstances(getPermissionMapper().select(targetUser.getModel()));
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// User cannot read this user's permissions
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throw new GuacamoleSecurityException("Permission denied.");
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}
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}
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@@ -23,12 +23,9 @@
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package org.glyptodon.guacamole.auth.jdbc.permission;
|
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|
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import java.util.Collection;
|
||||
import java.util.Collections;
|
||||
import java.util.HashSet;
|
||||
import org.glyptodon.guacamole.auth.jdbc.user.AuthenticatedUser;
|
||||
import org.glyptodon.guacamole.auth.jdbc.user.ModeledUser;
|
||||
import org.glyptodon.guacamole.GuacamoleException;
|
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import org.glyptodon.guacamole.GuacamoleSecurityException;
|
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import org.glyptodon.guacamole.net.auth.permission.ObjectPermission;
|
||||
import org.glyptodon.guacamole.net.auth.permission.ObjectPermissionSet;
|
||||
|
||||
@@ -39,124 +36,8 @@ import org.glyptodon.guacamole.net.auth.permission.ObjectPermissionSet;
|
||||
*
|
||||
* @author Michael Jumper
|
||||
*/
|
||||
public abstract class ObjectPermissionService
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extends PermissionService<ObjectPermissionSet, ObjectPermission, ObjectPermissionModel> {
|
||||
|
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@Override
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protected abstract ObjectPermissionMapper getPermissionMapper();
|
||||
|
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@Override
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protected ObjectPermission getPermissionInstance(ObjectPermissionModel model) {
|
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return new ObjectPermission(model.getType(), model.getObjectIdentifier());
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}
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@Override
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protected ObjectPermissionModel getModelInstance(ModeledUser targetUser,
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ObjectPermission permission) {
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ObjectPermissionModel model = new ObjectPermissionModel();
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||||
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// Populate model object with data from user and permission
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model.setUserID(targetUser.getModel().getObjectID());
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model.setUsername(targetUser.getModel().getIdentifier());
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model.setType(permission.getType());
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model.setObjectIdentifier(permission.getObjectIdentifier());
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return model;
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Determines whether the current user has permission to update the given
|
||||
* target user, adding or removing the given permissions. Such permission
|
||||
* depends on whether the current user is a system administrator, whether
|
||||
* they have explicit UPDATE permission on the target user, and whether
|
||||
* they have explicit ADMINISTER permission on all affected objects.
|
||||
*
|
||||
* @param user
|
||||
* The user who is changing permissions.
|
||||
*
|
||||
* @param targetUser
|
||||
* The user whose permissions are being changed.
|
||||
*
|
||||
* @param permissions
|
||||
* The permissions that are being added or removed from the target
|
||||
* user.
|
||||
*
|
||||
* @return
|
||||
* true if the user has permission to change the target users
|
||||
* permissions as specified, false otherwise.
|
||||
*
|
||||
* @throws GuacamoleException
|
||||
* If an error occurs while checking permission status, or if
|
||||
* permission is denied to read the current user's permissions.
|
||||
*/
|
||||
protected boolean canAlterPermissions(AuthenticatedUser user, ModeledUser targetUser,
|
||||
Collection<ObjectPermission> permissions)
|
||||
throws GuacamoleException {
|
||||
|
||||
// A system adminstrator can do anything
|
||||
if (user.getUser().isAdministrator())
|
||||
return true;
|
||||
|
||||
// Verify user has update permission on the target user
|
||||
ObjectPermissionSet userPermissionSet = user.getUser().getUserPermissions();
|
||||
if (!userPermissionSet.hasPermission(ObjectPermission.Type.UPDATE, targetUser.getIdentifier()))
|
||||
return false;
|
||||
|
||||
// Produce collection of affected identifiers
|
||||
Collection<String> affectedIdentifiers = new HashSet(permissions.size());
|
||||
for (ObjectPermission permission : permissions)
|
||||
affectedIdentifiers.add(permission.getObjectIdentifier());
|
||||
|
||||
// Determine subset of affected identifiers that we have admin access to
|
||||
ObjectPermissionSet affectedPermissionSet = getPermissionSet(user, user.getUser());
|
||||
Collection<String> allowedSubset = affectedPermissionSet.getAccessibleObjects(
|
||||
Collections.singleton(ObjectPermission.Type.ADMINISTER),
|
||||
affectedIdentifiers
|
||||
);
|
||||
|
||||
// The permissions can be altered if and only if the set of objects we
|
||||
// are allowed to administer is equal to the set of objects we will be
|
||||
// affecting.
|
||||
|
||||
return affectedIdentifiers.size() == allowedSubset.size();
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void createPermissions(AuthenticatedUser user, ModeledUser targetUser,
|
||||
Collection<ObjectPermission> permissions)
|
||||
throws GuacamoleException {
|
||||
|
||||
// Create permissions only if user has permission to do so
|
||||
if (canAlterPermissions(user, targetUser, permissions)) {
|
||||
Collection<ObjectPermissionModel> models = getModelInstances(targetUser, permissions);
|
||||
getPermissionMapper().insert(models);
|
||||
return;
|
||||
}
|
||||
|
||||
// User lacks permission to create object permissions
|
||||
throw new GuacamoleSecurityException("Permission denied.");
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void deletePermissions(AuthenticatedUser user, ModeledUser targetUser,
|
||||
Collection<ObjectPermission> permissions)
|
||||
throws GuacamoleException {
|
||||
|
||||
// Delete permissions only if user has permission to do so
|
||||
if (canAlterPermissions(user, targetUser, permissions)) {
|
||||
Collection<ObjectPermissionModel> models = getModelInstances(targetUser, permissions);
|
||||
getPermissionMapper().delete(models);
|
||||
return;
|
||||
}
|
||||
|
||||
// User lacks permission to delete object permissions
|
||||
throw new GuacamoleSecurityException("Permission denied.");
|
||||
|
||||
}
|
||||
public interface ObjectPermissionService
|
||||
extends PermissionService<ObjectPermissionSet, ObjectPermission> {
|
||||
|
||||
/**
|
||||
* Retrieves the permission of the given type associated with the given
|
||||
@@ -181,26 +62,9 @@ public abstract class ObjectPermissionService
|
||||
* @throws GuacamoleException
|
||||
* If an error occurs while retrieving the requested permission.
|
||||
*/
|
||||
public ObjectPermission retrievePermission(AuthenticatedUser user,
|
||||
ObjectPermission retrievePermission(AuthenticatedUser user,
|
||||
ModeledUser targetUser, ObjectPermission.Type type,
|
||||
String identifier) throws GuacamoleException {
|
||||
|
||||
// Retrieve permissions only if allowed
|
||||
if (canReadPermissions(user, targetUser)) {
|
||||
|
||||
// Read permission from database, return null if not found
|
||||
ObjectPermissionModel model = getPermissionMapper().selectOne(targetUser.getModel(), type, identifier);
|
||||
if (model == null)
|
||||
return null;
|
||||
|
||||
return getPermissionInstance(model);
|
||||
|
||||
}
|
||||
|
||||
// User cannot read this user's permissions
|
||||
throw new GuacamoleSecurityException("Permission denied.");
|
||||
|
||||
}
|
||||
String identifier) throws GuacamoleException;
|
||||
|
||||
/**
|
||||
* Retrieves the subset of the given identifiers for which the given user
|
||||
@@ -228,29 +92,8 @@ public abstract class ObjectPermissionService
|
||||
* @throws GuacamoleException
|
||||
* If an error occurs while retrieving permissions.
|
||||
*/
|
||||
public Collection<String> retrieveAccessibleIdentifiers(AuthenticatedUser user,
|
||||
Collection<String> retrieveAccessibleIdentifiers(AuthenticatedUser user,
|
||||
ModeledUser targetUser, Collection<ObjectPermission.Type> permissions,
|
||||
Collection<String> identifiers) throws GuacamoleException {
|
||||
|
||||
// Nothing is always accessible
|
||||
if (identifiers.isEmpty())
|
||||
return identifiers;
|
||||
|
||||
// Retrieve permissions only if allowed
|
||||
if (canReadPermissions(user, targetUser)) {
|
||||
|
||||
// If user is an admin, everything is accessible
|
||||
if (user.getUser().isAdministrator())
|
||||
return identifiers;
|
||||
|
||||
// Otherwise, return explicitly-retrievable identifiers
|
||||
return getPermissionMapper().selectAccessibleIdentifiers(targetUser.getModel(), permissions, identifiers);
|
||||
|
||||
}
|
||||
|
||||
// User cannot read this user's permissions
|
||||
throw new GuacamoleSecurityException("Permission denied.");
|
||||
|
||||
}
|
||||
Collection<String> identifiers) throws GuacamoleException;
|
||||
|
||||
}
|
||||
|
||||
@@ -47,137 +47,9 @@ import org.glyptodon.guacamole.net.auth.permission.PermissionSet;
|
||||
*
|
||||
* @param <PermissionType>
|
||||
* The type of permission this service provides access to.
|
||||
*
|
||||
* @param <ModelType>
|
||||
* The underlying model object used to represent PermissionType in the
|
||||
* database.
|
||||
*/
|
||||
public abstract class PermissionService<PermissionSetType extends PermissionSet<PermissionType>,
|
||||
PermissionType extends Permission, ModelType> {
|
||||
|
||||
/**
|
||||
* Returns an instance of a mapper for the type of permission used by this
|
||||
* service.
|
||||
*
|
||||
* @return
|
||||
* A mapper which provides access to the model objects associated with
|
||||
* the permissions used by this service.
|
||||
*/
|
||||
protected abstract PermissionMapper<ModelType> getPermissionMapper();
|
||||
|
||||
/**
|
||||
* Returns an instance of a permission which is based on the given model
|
||||
* object.
|
||||
*
|
||||
* @param model
|
||||
* The model object to use to produce the returned permission.
|
||||
*
|
||||
* @return
|
||||
* A permission which is based on the given model object.
|
||||
*/
|
||||
protected abstract PermissionType getPermissionInstance(ModelType model);
|
||||
|
||||
/**
|
||||
* Returns a collection of permissions which are based on the models in
|
||||
* the given collection.
|
||||
*
|
||||
* @param models
|
||||
* The model objects to use to produce the permissions within the
|
||||
* returned set.
|
||||
*
|
||||
* @return
|
||||
* A set of permissions which are based on the models in the given
|
||||
* collection.
|
||||
*/
|
||||
protected Set<PermissionType> getPermissionInstances(Collection<ModelType> models) {
|
||||
|
||||
// Create new collection of permissions by manually converting each model
|
||||
Set<PermissionType> permissions = new HashSet<PermissionType>(models.size());
|
||||
for (ModelType model : models)
|
||||
permissions.add(getPermissionInstance(model));
|
||||
|
||||
return permissions;
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns an instance of a model object which is based on the given
|
||||
* permission and target user.
|
||||
*
|
||||
* @param targetUser
|
||||
* The user to whom this permission is granted.
|
||||
*
|
||||
* @param permission
|
||||
* The permission to use to produce the returned model object.
|
||||
*
|
||||
* @return
|
||||
* A model object which is based on the given permission and target
|
||||
* user.
|
||||
*/
|
||||
protected abstract ModelType getModelInstance(ModeledUser targetUser,
|
||||
PermissionType permission);
|
||||
|
||||
/**
|
||||
* Returns a collection of model objects which are based on the given
|
||||
* permissions and target user.
|
||||
*
|
||||
* @param targetUser
|
||||
* The user to whom this permission is granted.
|
||||
*
|
||||
* @param permissions
|
||||
* The permissions to use to produce the returned model objects.
|
||||
*
|
||||
* @return
|
||||
* A collection of model objects which are based on the given
|
||||
* permissions and target user.
|
||||
*/
|
||||
protected Collection<ModelType> getModelInstances(ModeledUser targetUser,
|
||||
Collection<PermissionType> permissions) {
|
||||
|
||||
// Create new collection of models by manually converting each permission
|
||||
Collection<ModelType> models = new ArrayList<ModelType>(permissions.size());
|
||||
for (PermissionType permission : permissions)
|
||||
models.add(getModelInstance(targetUser, permission));
|
||||
|
||||
return models;
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Determines whether the given user can read the permissions currently
|
||||
* granted to the given target user. If the reading user and the target
|
||||
* user are not the same, then explicit READ or SYSTEM_ADMINISTER access is
|
||||
* required.
|
||||
*
|
||||
* @param user
|
||||
* The user attempting to read permissions.
|
||||
*
|
||||
* @param targetUser
|
||||
* The user whose permissions are being read.
|
||||
*
|
||||
* @return
|
||||
* true if permission is granted, false otherwise.
|
||||
*
|
||||
* @throws GuacamoleException
|
||||
* If an error occurs while checking permission status, or if
|
||||
* permission is denied to read the current user's permissions.
|
||||
*/
|
||||
protected boolean canReadPermissions(AuthenticatedUser user,
|
||||
ModeledUser targetUser) throws GuacamoleException {
|
||||
|
||||
// A user can always read their own permissions
|
||||
if (user.getUser().getIdentifier().equals(targetUser.getIdentifier()))
|
||||
return true;
|
||||
|
||||
// A system adminstrator can do anything
|
||||
if (user.getUser().isAdministrator())
|
||||
return true;
|
||||
|
||||
// Can read permissions on target user if explicit READ is granted
|
||||
ObjectPermissionSet userPermissionSet = user.getUser().getUserPermissions();
|
||||
return userPermissionSet.hasPermission(ObjectPermission.Type.READ, targetUser.getIdentifier());
|
||||
|
||||
}
|
||||
public interface PermissionService<PermissionSetType extends PermissionSet<PermissionType>,
|
||||
PermissionType extends Permission> {
|
||||
|
||||
/**
|
||||
* Returns a permission set that can be used to retrieve and manipulate the
|
||||
@@ -200,7 +72,7 @@ public abstract class PermissionService<PermissionSetType extends PermissionSet<
|
||||
* user, or if permission to retrieve the permissions of the given
|
||||
* user is denied.
|
||||
*/
|
||||
public abstract PermissionSetType getPermissionSet(AuthenticatedUser user,
|
||||
PermissionSetType getPermissionSet(AuthenticatedUser user,
|
||||
ModeledUser targetUser) throws GuacamoleException;
|
||||
|
||||
/**
|
||||
@@ -218,17 +90,8 @@ public abstract class PermissionService<PermissionSetType extends PermissionSet<
|
||||
* @throws GuacamoleException
|
||||
* If an error occurs while retrieving the requested permissions.
|
||||
*/
|
||||
public Set<PermissionType> retrievePermissions(AuthenticatedUser user,
|
||||
ModeledUser targetUser) throws GuacamoleException {
|
||||
|
||||
// Retrieve permissions only if allowed
|
||||
if (canReadPermissions(user, targetUser))
|
||||
return getPermissionInstances(getPermissionMapper().select(targetUser.getModel()));
|
||||
|
||||
// User cannot read this user's permissions
|
||||
throw new GuacamoleSecurityException("Permission denied.");
|
||||
|
||||
}
|
||||
Set<PermissionType> retrievePermissions(AuthenticatedUser user,
|
||||
ModeledUser targetUser) throws GuacamoleException;
|
||||
|
||||
/**
|
||||
* Creates the given permissions within the database. If any permissions
|
||||
@@ -247,8 +110,7 @@ public abstract class PermissionService<PermissionSetType extends PermissionSet<
|
||||
* If the user lacks permission to create the permissions, or an error
|
||||
* occurs while creating the permissions.
|
||||
*/
|
||||
public abstract void createPermissions(AuthenticatedUser user,
|
||||
ModeledUser targetUser,
|
||||
void createPermissions(AuthenticatedUser user, ModeledUser targetUser,
|
||||
Collection<PermissionType> permissions) throws GuacamoleException;
|
||||
|
||||
/**
|
||||
@@ -268,8 +130,7 @@ public abstract class PermissionService<PermissionSetType extends PermissionSet<
|
||||
* If the user lacks permission to delete the permissions, or an error
|
||||
* occurs while deleting the permissions.
|
||||
*/
|
||||
public abstract void deletePermissions(AuthenticatedUser user,
|
||||
ModeledUser targetUser,
|
||||
void deletePermissions(AuthenticatedUser user, ModeledUser targetUser,
|
||||
Collection<PermissionType> permissions) throws GuacamoleException;
|
||||
|
||||
}
|
||||
|
||||
@@ -40,7 +40,7 @@ import org.glyptodon.guacamole.net.auth.permission.SystemPermission;
|
||||
* @author Michael Jumper
|
||||
*/
|
||||
public class SystemPermissionService
|
||||
extends PermissionService<SystemPermissionSet, SystemPermission, SystemPermissionModel> {
|
||||
extends ModeledPermissionService<SystemPermissionSet, SystemPermission, SystemPermissionModel> {
|
||||
|
||||
/**
|
||||
* Mapper for system-level permissions.
|
||||
|
||||
@@ -35,7 +35,7 @@ import org.glyptodon.guacamole.auth.jdbc.user.ModeledUser;
|
||||
*
|
||||
* @author Michael Jumper
|
||||
*/
|
||||
public class UserPermissionService extends ObjectPermissionService {
|
||||
public class UserPermissionService extends ModeledObjectPermissionService {
|
||||
|
||||
/**
|
||||
* Mapper for user permissions.
|
||||
|
||||
Reference in New Issue
Block a user