com.sshdemo.common.web.util.ContextUtil.java Source code

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Here is the source code for com.sshdemo.common.web.util.ContextUtil.java

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/**
 * Copyright (c)2010-2011 Enterprise Website Content Management System(EWCMS), All rights reserved.
 * EWCMS PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 * http://www.ewcms.com
 */

package com.sshdemo.common.web.util;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.apache.commons.lang.xwork.StringUtils;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import com.sshdemo.common.security.manage.service.AuthorityServiceable;
import com.sshdemo.common.security.manage.service.GroupServiceable;

/**
 *
 * @author wangwei
 */
public class ContextUtil {

    private static Collection<String> getGrantedAuthorities(String perfix) {

        List<String> names = new ArrayList<String>();

        UserDetails user = getUserDetails();
        if (user == null) {
            return names;
        }

        Collection<? extends GrantedAuthority> authorites = user.getAuthorities();
        for (GrantedAuthority auth : authorites) {
            if (StringUtils.startsWith(auth.getAuthority(), perfix)) {
                names.add(auth.getAuthority());
            }
        }

        return names;
    }

    public static Collection<String> getGroupnames() {
        return getGrantedAuthorities(GroupServiceable.GROUP_NAME_PERFIX);
    }

    public static Collection<String> getAutoritynames() {
        return getGrantedAuthorities(AuthorityServiceable.Authority_NAME_PERFIX);
    }

    public static UserDetails getUserDetails() {
        UserDetails userDetails = (UserDetails) SecurityContextHolder.getContext().getAuthentication()
                .getPrincipal();
        return userDetails;
    }

    public static String getUserName() {
        Authentication currentUser = SecurityContextHolder.getContext().getAuthentication();
        if (currentUser == null) {
            return "";
        }
        return currentUser.getName();
    }
}