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/*-
* ============LICENSE_START=======================================================
* org.onap.dmaap
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* Modifications Copyright (C) 2019 IBM.
* ================================================================================
* 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.onap.dmaap.dbcapi.client;
import org.apache.commons.codec.binary.Base64;
import org.onap.dmaap.dbcapi.aaf.AafDecrypt;
import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
import org.onap.dmaap.dbcapi.logging.DmaapbcLogMessageEnum;
import org.onap.dmaap.dbcapi.model.ApiError;
import org.onap.dmaap.dbcapi.model.MR_Cluster;
import org.onap.dmaap.dbcapi.model.Topic;
import org.onap.dmaap.dbcapi.util.DmaapConfig;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSession;
import java.io.*;
import java.net.*;
import java.util.Arrays;
public class MrProvConnection extends BaseLoggingClass{
private String provURL;
private HttpURLConnection uc;
private String topicMgrCred;
private String authMethod;
private String user;
private String encPwd;
private String unit_test;
private boolean hostnameVerify;
public MrProvConnection() {
String mechIdProperty = "aaf.TopicMgrUser";
String pwdProperty = "aaf.TopicMgrPassword";
DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
user = p.getProperty( mechIdProperty, "noMechId@domain.netset.com" );
encPwd = p.getProperty( pwdProperty, "notSet" );
authMethod = p.getProperty("MR.authentication", "none");
topicMgrCred = getCred();
hostnameVerify= "true".equalsIgnoreCase(p.getProperty("MR.hostnameVerify", "true"));
unit_test = p.getProperty( "UnitTest", "No" );
}
private String getCred( ) {
String pwd = "";
AafDecrypt decryptor = new AafDecrypt();
pwd = decryptor.decrypt(encPwd);
return user + ":" + pwd;
}
public boolean makeTopicConnection( MR_Cluster cluster ) {
logger.info( "connect to cluster: " + cluster.getDcaeLocationName());
provURL = cluster.getTopicProtocol() + "://" + cluster.getFqdn() + ":" + cluster.getTopicPort() + "/topics/create";
if ( cluster.getTopicProtocol().equals( "https" ) ) {
return makeSecureConnection( provURL );
}
return makeConnection( provURL );
}
private boolean makeSecureConnection( String pURL ) {
logger.info( "makeConnection to " + pURL );
try {
HostnameVerifier hostnameVerifier = new HostnameVerifier() {
@Override
public boolean verify( String hostname, SSLSession session ) {
return true;
}
};
URL u = new URL( pURL );
uc = (HttpsURLConnection) u.openConnection();
uc.setInstanceFollowRedirects(false);
if ( ! hostnameVerify ) {
HttpsURLConnection ucs = (HttpsURLConnection) uc;
ucs.setHostnameVerifier(hostnameVerifier);
}
logger.info( "open secure connect to " + pURL );
return(true);
} catch( UnknownHostException uhe ){
logger.error( "Caught UnknownHostException for " + pURL);
return(false);
} catch (Exception e) {
logger.error("Unexpected error during openConnection of " + pURL );
logger.error("Unexpected error during openConnection of ",e );
return(false);
}
}
private boolean makeConnection( String pURL ) {
logger.info( "makeConnection to " + pURL );
try {
URL u = new URL( pURL );
uc = (HttpURLConnection) u.openConnection();
uc.setInstanceFollowRedirects(false);
logger.info( "open connect to " + pURL );
return(true);
} catch( UnknownHostException uhe ){
logger.error( "Caught UnknownHostException for " + pURL);
return(false);
} catch (Exception e) {
logger.error("Unexpected error during openConnection of " + pURL );
logger.error("Unexpected error during openConnection of ",e );
return(false);
}
}
static String bodyToString( InputStream is ) {
StringBuilder sb = new StringBuilder();
BufferedReader br = new BufferedReader( new InputStreamReader(is));
String line;
try {
while ((line = br.readLine()) != null ) {
sb.append( line );
}
} catch (IOException ex ) {
errorLogger.error( "IOexception:" + ex);
}
return sb.toString();
}
public String doPostTopic( Topic postTopic, ApiError err ) {
String auth = "Basic " + Base64.encodeBase64String(topicMgrCred.getBytes());
String responsemessage = null;
int rc = -1;
try {
byte[] postData = postTopic.getBytes();
logger.info( "post fields=" + Arrays.toString(postData));
if ( authMethod.equalsIgnoreCase("basicAuth") ) {
uc.setRequestProperty("Authorization", auth);
logger.info( "Authenticating with " + auth );
} else if ( authMethod.equalsIgnoreCase("cert")) {
logger.error( "MR.authentication set for client certificate. Not supported yet.");
}
uc.setRequestMethod("POST");
uc.setRequestProperty("Content-Type", "application/json");
uc.setRequestProperty( "charset", "utf-8");
uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
uc.setUseCaches(false);
uc.setDoOutput(true);
OutputStream os = null;
try {
uc.connect();
os = uc.getOutputStream();
os.write( postData );
} catch (ProtocolException pe) {
// Rcvd error instead of 100-Continue
try {
// work around glitch in Java 1.7.0.21 and likely others
// without this, Java will connect multiple times to the server to run the same request
uc.setDoOutput(false);
} catch (Exception e) {
}
} catch ( UnknownHostException uhe ) {
errorLogger.error( DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION , "Unknown Host Exception" , provURL );
err.setCode(500);
err.setMessage("Unknown Host Exception");
err.setFields( uc.getURL().getHost());
return new String( "500: " + uhe.getMessage());
}catch ( ConnectException ce ) {
if ( unit_test.equals( "Yes" ) ) {
err.setCode(200);
err.setMessage( "simulated response");
logger.info( "artificial 200 response from doPostMessage because unit_test =" + unit_test );
} else {
errorLogger.error( DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION, provURL, "HTTP Connection Exception" );
err.setCode(500);
err.setMessage("HTTP Connection Exception");
err.setFields( uc.getURL().getHost());
return new String( "500: " + ce.getMessage());
}
}
rc = uc.getResponseCode();
logger.info( "http response code:" + rc );
err.setCode(rc);
responsemessage = uc.getResponseMessage();
logger.info( "responsemessage=" + responsemessage );
err.setMessage(responsemessage);
if (responsemessage == null) {
// work around for glitch in Java 1.7.0.21 and likely others
// When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
String h0 = uc.getHeaderField(0);
if (h0 != null) {
int i = h0.indexOf(' ');
int j = h0.indexOf(' ', i + 1);
if (i != -1 && j != -1) {
responsemessage = h0.substring(j + 1);
}
}
}
if (rc >= 200 && rc < 300 ) {
String responseBody = null;
responseBody = bodyToString( uc.getInputStream() );
logger.info( "responseBody=" + responseBody );
return responseBody;
}
} catch (Exception e) {
errorLogger.error("Unable to read response: " + e.getMessage() );
}
finally {
try {
uc.disconnect();
} catch ( Exception e ) {
errorLogger.error("Unable to disconnect");
}
}
return new String( rc +": " + responsemessage );
}
}
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