org.mashupmedia.service.SecurityManagerImpl.java Source code

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Here is the source code for org.mashupmedia.service.SecurityManagerImpl.java

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/*
 *  This file is part of MashupMedia.
 *
 *  MashupMedia is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  MashupMedia is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with MashupMedia.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.mashupmedia.service;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.mashupmedia.model.Group;
import org.mashupmedia.model.User;
import org.mashupmedia.model.library.Library;
import org.mashupmedia.model.media.MediaItem;
import org.mashupmedia.model.playlist.PlaylistMediaItem;
import org.mashupmedia.util.AdminHelper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
@Transactional
public class SecurityManagerImpl implements SecurityManager {

    @Autowired
    private AdminManager adminManager;

    @Override
    public List<Long> getLoggedInUserGroupIds() {
        User user = AdminHelper.getLoggedInUser();
        if (user == null) {
            return null;
        }

        user = adminManager.getUser(user.getId());

        Set<Group> groups = user.getGroups();
        if (user.isSystem()) {
            groups = new HashSet<Group>(adminManager.getGroups());
        }

        if (groups == null || groups.isEmpty()) {
            return null;
        }

        List<Long> groupIds = new ArrayList<Long>();
        for (Group group : groups) {
            groupIds.add(group.getId());
        }

        return groupIds;

    }

    @Override
    public boolean isLoggedInUserInGroup(Collection<Group> groups) {
        if (groups == null || groups.isEmpty()) {
            return false;
        }

        for (Group group : groups) {
            long groupId = group.getId();
            if (hasGroup(groupId)) {
                return true;
            }
        }
        return false;
    }

    protected boolean hasGroup(long groupId) {
        List<Long> userGroupIds = getLoggedInUserGroupIds();
        if (userGroupIds == null || userGroupIds.isEmpty()) {
            return false;
        }

        for (Long userGroupId : userGroupIds) {
            if (userGroupId == groupId) {
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean canAccessPlaylistMediaItem(PlaylistMediaItem playlistMediaItem) {
        List<Long> groupIds = getLoggedInUserGroupIds();
        if (groupIds == null || groupIds.isEmpty()) {
            return false;
        }

        if (playlistMediaItem == null) {
            return false;
        }

        MediaItem mediaItem = playlistMediaItem.getMediaItem();
        boolean canAccessMediaItem = canAccessMediaItem(mediaItem);
        return canAccessMediaItem;
    }

    @Override
    public boolean canAccessMediaItem(MediaItem mediaItem) {
        if (mediaItem == null) {
            return false;
        }

        Library library = mediaItem.getLibrary();
        Set<Group> groups = library.getGroups();
        if (isLoggedInUserInGroup(groups)) {
            return true;
        }

        return false;
    }

}