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/*-
* ============LICENSE_START=======================================================
* OpenECOMP - org.openecomp.dmaapbc
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.dmaapbc.service;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import javax.xml.bind.DatatypeConverter;
import org.apache.log4j.Logger;
import org.openecomp.dmaapbc.aaf.DmaapPerm;
import org.openecomp.dmaapbc.authentication.AuthenticationErrorException;
import org.openecomp.dmaapbc.authentication.DecisionPolicy;
import org.openecomp.dmaapbc.model.ApiError;
import org.openecomp.dmaapbc.model.Dmaap;
import org.openecomp.dmaapbc.resources.RequiredFieldException;
import org.openecomp.dmaapbc.util.DmaapConfig;
public class ApiService {
static final Logger logger = Logger.getLogger(ApiService.class);
static private String apiNamespace;
static private boolean usePE;
private ApiError err;
public ApiService() {
err = new ApiError();
if (apiNamespace == null) {
DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
usePE = "true".equalsIgnoreCase(p.getProperty("UsePE", "false"));
apiNamespace = p.getProperty("ApiNamespace", "org.openecomp.dmaapBC.api");
}
}
public ApiError getErr() {
return err;
}
public void setErr(ApiError err) {
this.err = err;
}
// test for presence of a required field
public void required( String name, Object val, String expr ) throws RequiredFieldException {
if ( val == null ) {
err.setCode(Status.BAD_REQUEST.getStatusCode());
err.setMessage("missing required field");
err.setFields( name );
throw new RequiredFieldException();
}
if ( expr != null && ! expr.isEmpty() ) {
Pattern pattern = Pattern.compile(expr);
Matcher matcher = pattern.matcher((CharSequence) val);
if ( ! matcher.find() ) {
err.setCode(Status.BAD_REQUEST.getStatusCode());
err.setMessage( "value '" + val + "' violates regexp check '" + expr + "'");
err.setFields( name );
throw new RequiredFieldException();
}
}
}
// utility to serialize ApiErr object
public String toString() {
return String.format( "code=%d msg=%s fields=%s", err.getCode(), err.getMessage(), err.getFields() );
}
public void setCode(int statusCode) {
err.setCode(statusCode);
}
public void setMessage(String string) {
err.setMessage(string);
}
public void setFields(String string) {
err.setFields(string);
}
private Response buildResponse() {
return Response.status( err.getCode())
.entity(getErr())
.build();
}
public Response response(int statusCode) {
err.setCode(statusCode);
return buildResponse();
}
public Response unauthorized() {
err.setCode(Status.UNAUTHORIZED.getStatusCode());
err.setFields( "Authorization");
err.setMessage( "User credentials in HTTP Header field Authorization are not authorized for the requested action");
return buildResponse();
}
public Response unavailable() {
err.setCode(Status.SERVICE_UNAVAILABLE.getStatusCode());
err.setMessage( "Request is unavailable due to unexpected condition");
return buildResponse();
}
public void checkAuthorization( String authorization, String uriPath, String method ) throws AuthenticationErrorException, Exception {
if ( ! usePE ) return; // skip authorization if not enabled
if ( authorization == null || authorization.isEmpty()) {
String errmsg = "No basic authorization value provided ";
logger.info( errmsg );
throw new AuthenticationErrorException( );
}
if ( uriPath == null || uriPath.isEmpty()) {
String errmsg = "No URI value provided ";
logger.info( errmsg );
throw new AuthenticationErrorException( );
}
if ( method == null || method.isEmpty()) {
String errmsg = "No method value provided ";
logger.info( errmsg );
throw new AuthenticationErrorException( );
}
DmaapService dmaapService = new DmaapService();
Dmaap dmaap = dmaapService.getDmaap();
String env = dmaap.getDmaapName();
// special case during bootstrap of app when DMaaP environment may not be set.
// this allows us to authorize certain APIs used for initialization during this window.
if ( env.isEmpty() ) {
env = "boot";
}
String credentials = authorization.substring("Basic".length()).trim();
byte[] decoded = DatatypeConverter.parseBase64Binary(credentials);
String decodedString = new String(decoded);
String[] actualCredentials = decodedString.split(":");
String ID = actualCredentials[0];
String Password = actualCredentials[1];
logger.info( "User " + ID + " allowed - DecisionPolicy() not compiled in yet!" );
/* disable until PolicyEngine avail...
try {
DecisionPolicy d = new DecisionPolicy();
DmaapPerm p = new DmaapPerm( apiNamespace + "." + uriPath, env, method );
d.check( ID, Password, p);
} catch ( AuthenticationErrorException ae ) {
logger.info( "User " + ID + " failed authentication/authorization");
throw ae;
}
*/
}
}
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