DefaultIntrospectionResultAssembler.java

/*******************************************************************************
 * Copyright 2017 The MIT Internet Trust Consortium
 *
 * 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 org.mitre.oauth2.service.impl;

import static com.google.common.collect.Maps.newLinkedHashMap;

import java.text.ParseException;
import java.util.Map;
import java.util.Set;

import org.mitre.oauth2.model.OAuth2AccessTokenEntity;
import org.mitre.oauth2.model.OAuth2RefreshTokenEntity;
import org.mitre.oauth2.service.IntrospectionResultAssembler;
import org.mitre.openid.connect.model.UserInfo;
import org.mitre.uma.model.Permission;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.oauth2.provider.OAuth2Authentication;
import org.springframework.stereotype.Service;

import com.google.common.base.Joiner;
import com.google.common.collect.Sets;

/**
 * Default implementation of the {@link IntrospectionResultAssembler} interface.
 */
@Service
public class DefaultIntrospectionResultAssembler implements IntrospectionResultAssembler {

    /**
     * Logger for this class
     */
    private static final Logger logger = LoggerFactory.getLogger(DefaultIntrospectionResultAssembler.class);

    @Override
    public Map<String, Object> assembleFrom(OAuth2AccessTokenEntity accessToken, UserInfo userInfo, Set<String> authScopes) {

        Map<String, Object> result = newLinkedHashMap();
        OAuth2Authentication authentication = accessToken.getAuthenticationHolder().getAuthentication();

        result.put(ACTIVE, true);

        if (accessToken.getPermissions() != null && !accessToken.getPermissions().isEmpty()) {

            Set<Object> permissions = Sets.newHashSet();

            for (Permission perm : accessToken.getPermissions()) {
                Map<String, Object> o = newLinkedHashMap();
                o.put("resource_set_id", perm.getResourceSet().getId().toString());
                Set<String> scopes = Sets.newHashSet(perm.getScopes());
                o.put("scopes", scopes);
                permissions.add(o);
            }

            result.put("permissions", permissions);

        } else {
            Set<String> scopes = Sets.intersection(authScopes, accessToken.getScope());

            result.put(SCOPE, Joiner.on(SCOPE_SEPARATOR).join(scopes));

        }

        if (accessToken.getExpiration() != null) {
            try {
                result.put(EXPIRES_AT, dateFormat.valueToString(accessToken.getExpiration()));
                result.put(EXP, accessToken.getExpiration().getTime() / 1000L);
            } catch (ParseException e) {
                logger.error("Parse exception in token introspection", e);
            }
        }

        if (userInfo != null) {
            // if we have a UserInfo, use that for the subject
            result.put(SUB, userInfo.getSub());
        } else {
            // otherwise, use the authentication's username
            result.put(SUB, authentication.getName());
        }

        if(authentication.getUserAuthentication() != null) {
            result.put(USER_ID, authentication.getUserAuthentication().getName());
        }

        result.put(CLIENT_ID, authentication.getOAuth2Request().getClientId());

        result.put(TOKEN_TYPE, accessToken.getTokenType());

        return result;
    }

    @Override
    public Map<String, Object> assembleFrom(OAuth2RefreshTokenEntity refreshToken, UserInfo userInfo, Set<String> authScopes) {

        Map<String, Object> result = newLinkedHashMap();
        OAuth2Authentication authentication = refreshToken.getAuthenticationHolder().getAuthentication();

        result.put(ACTIVE, true);

        Set<String> scopes = Sets.intersection(authScopes, authentication.getOAuth2Request().getScope());

        result.put(SCOPE, Joiner.on(SCOPE_SEPARATOR).join(scopes));

        if (refreshToken.getExpiration() != null) {
            try {
                result.put(EXPIRES_AT, dateFormat.valueToString(refreshToken.getExpiration()));
                result.put(EXP, refreshToken.getExpiration().getTime() / 1000L);
            } catch (ParseException e) {
                logger.error("Parse exception in token introspection", e);
            }
        }


        if (userInfo != null) {
            // if we have a UserInfo, use that for the subject
            result.put(SUB, userInfo.getSub());
        } else {
            // otherwise, use the authentication's username
            result.put(SUB, authentication.getName());
        }

        if(authentication.getUserAuthentication() != null) {
            result.put(USER_ID, authentication.getUserAuthentication().getName());
        }

        result.put(CLIENT_ID, authentication.getOAuth2Request().getClientId());

        return result;
    }
}