org.cloudfoundry.identity.uaa.oauth.AuthorizationAttributesParser Maven / Gradle / Ivy

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package org.cloudfoundry.identity.uaa.oauth;

import com.fasterxml.jackson.core.type.TypeReference;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.cloudfoundry.identity.uaa.util.JsonUtils;
import org.springframework.util.StringUtils;

import java.util.Map;

public class AuthorizationAttributesParser {
    private final Log logger = LogFactory.getLog(getClass());

    /**
     * This method searches the authorities in the request for
     * additionalAuthorizationAttributes
     * and returns a map of these attributes that will later be added to the
     * token
     *
     * @param authoritiesJson
     * @return
     */
    public Map getAdditionalAuthorizationAttributes(String authoritiesJson) {
        if (StringUtils.hasLength(authoritiesJson)) {
            try {
                Map authorities = JsonUtils.readValue(authoritiesJson, new TypeReference>() {});
                Object az_attr = authorities.get("az_attr");
                if(az_attr == null)
                    return null;
                // validate az_attr content with Map>
                Map additionalAuthorizationAttributes =
                    JsonUtils.readValue(JsonUtils.writeValueAsBytes(az_attr), new TypeReference>() {});

                return additionalAuthorizationAttributes;
            } catch (Throwable t) {
                logger.error("Unable to read additionalAuthorizationAttributes", t);
            }
        }

        return null;
    }
}