net.maritimecloud.endorsement.utils.AccessControlUtil.java Source code

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Here is the source code for net.maritimecloud.endorsement.utils.AccessControlUtil.java

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/*
 * Copyright 2017 Danish Maritime Authority.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package net.maritimecloud.endorsement.utils;

import org.keycloak.KeycloakSecurityContext;
import org.keycloak.adapters.springsecurity.token.KeycloakAuthenticationToken;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationToken;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;

@Component("accessControlUtil")
public class AccessControlUtil {

    //@Autowired
    //private HasRoleUtil hasRoleUtil;
    public static final String ORG_PROPERTY_NAME = "org";
    public static final String PERMISSIONS_PROPERTY_NAME = "permissions";

    private static final Logger logger = LoggerFactory.getLogger(AccessControlUtil.class);

    public static boolean hasAccessToOrg(String orgMrn) {
        if (orgMrn == null || orgMrn.trim().isEmpty()) {
            logger.debug("The orgMrn was empty!");
            return false;
        }
        Authentication auth = SecurityContextHolder.getContext().getAuthentication();
        // First check if the user is a SITE_ADMIN, in which case he gets access.
        /*for (GrantedAuthority authority : auth.getAuthorities()) {
        String role = authority.getAuthority();
        logger.debug("User has role: " + role);
        if ("ROLE_SITE_ADMIN".equals(role)) {
            return true;
        }
        }
        logger.debug("User not a SITE_ADMIN");*/
        // Check if the user is part of the organization
        if (auth instanceof KeycloakAuthenticationToken) {
            logger.debug("OIDC authentication in process");
            // Keycloak authentication
            KeycloakAuthenticationToken kat = (KeycloakAuthenticationToken) auth;
            KeycloakSecurityContext ksc = (KeycloakSecurityContext) kat.getCredentials();
            Map<String, Object> otherClaims = ksc.getToken().getOtherClaims();
            if (otherClaims.containsKey(AccessControlUtil.ORG_PROPERTY_NAME)
                    && ((String) otherClaims.get(AccessControlUtil.ORG_PROPERTY_NAME)).toLowerCase()
                            .equals(orgMrn.toLowerCase())) {
                logger.debug("Entity from org: " + otherClaims.get(AccessControlUtil.ORG_PROPERTY_NAME) + " is in "
                        + orgMrn);
                return true;
            }
            logger.debug("Entity from org: " + otherClaims.get(AccessControlUtil.ORG_PROPERTY_NAME) + " is not in "
                    + orgMrn);
            /*} else if (auth instanceof PreAuthenticatedAuthenticationToken) {
                logger.debug("Certificate authentication in process");
                // Certificate authentication
                PreAuthenticatedAuthenticationToken token = (PreAuthenticatedAuthenticationToken) auth;
                // Check that the Organization name of the accessed organization and the organization in the certificate is equal
                InetOrgPerson person = ((InetOrgPerson) token.getPrincipal());
                // The O(rganization) value in the certificate is an MRN
                String certOrgMrn = person.getO();
                if (orgMrn.equals(certOrgMrn)) {
            logger.debug("Entity with O=" + certOrgMrn + " is in " + orgMrn);
            return true;
                }
                logger.debug("Entity with O=" + certOrgMrn + " is not in " + orgMrn);*/
        } else {
            if (auth != null) {
                logger.debug("Unknown authentication method: " + auth.getClass());
            }
        }
        return false;
    }

    public static boolean hasPermission(String permission) {
        Authentication auth = SecurityContextHolder.getContext().getAuthentication();
        if (auth instanceof KeycloakAuthenticationToken) {
            logger.debug("OIDC permission lookup");
            // Keycloak authentication
            KeycloakAuthenticationToken kat = (KeycloakAuthenticationToken) auth;
            KeycloakSecurityContext ksc = (KeycloakSecurityContext) kat.getCredentials();
            Map<String, Object> otherClaims = ksc.getToken().getOtherClaims();
            if (otherClaims.containsKey(AccessControlUtil.PERMISSIONS_PROPERTY_NAME)) {
                String usersPermissions = (String) otherClaims.get(AccessControlUtil.PERMISSIONS_PROPERTY_NAME);
                String[] permissionList = usersPermissions.split(",");
                for (String per : permissionList) {
                    if (per.equalsIgnoreCase(permission)) {
                        return true;
                    }
                }
            }
            /*} else if (auth instanceof PreAuthenticatedAuthenticationToken) {
                logger.debug("Certificate permission lookup");
                // Certificate authentication
                PreAuthenticatedAuthenticationToken token = (PreAuthenticatedAuthenticationToken) auth;
                // Check that the permission is granted to this user
                InetOrgPerson person = ((InetOrgPerson) token.getPrincipal());
                Collection<GrantedAuthority> authorities = person.getAuthorities();
                for (GrantedAuthority authority : authorities) {
            String usersPermissions = authority.getAuthority();
            String[] permissionList = usersPermissions.split(",");
            for (String per : permissionList) {
                if (per.equalsIgnoreCase(permission)) {
                    return true;
                }
            }
                }*/
        } else {
            if (auth != null) {
                logger.debug("Unknown authentication method: " + auth.getClass());
            }
        }
        return false;
    }

    /*public static List<String> getMyRoles() {
    logger.debug("Role lookup");
    List<String> roles = new ArrayList<>();
    Authentication auth = SecurityContextHolder.getContext().getAuthentication();
    if (auth != null) {
        for (GrantedAuthority authority : auth.getAuthorities()) {
            roles.add(authority.getAuthority());
        }
    }
    return roles;
    }
        
    public boolean hasAnyRoles(List<String> roles) {
    for (String lookingForRole : roles) {
        if (lookingForRole != null && this.hasRole(lookingForRole)) {
            return true;
        }
    }
    return false;
    }
        
    public boolean hasRole(String role) {
    try {
        // If the user does not have the role (or a role that is above it in the role hierarchy)
        // an exception will be thrown by Spring Security.
        hasRoleUtil.testRole(role);
        logger.debug("user has role " + role);
        return true;
    } catch (Exception ade) {
        logger.debug("user does not have role " + role);
        return false;
    }
    }*/
}