问题
Hello guys I'm trying to setup a proxy service on WSO2ESB to access a NTLMv2 secured WS. I created a mediator class to achieve this but not luck so far, I keep receiving 401 status
Here is the code.
Proxy Service:
<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
name="test"
transports="http"
statistics="disable"
trace="disable"
startOnLoad="true">
<target endpoint="fincasEP">
<inSequence>
<class name="com.aig.mediator.NTLMAuthMediator">
<property name="port" value="remote-port"/>
<property name="username" value="username-credential"/>
<property name="host" value="remote-host-ip"/>
<property name="domain" value="remot-host-domain"/>
<property name="password" value="**********"/>
</class>
</inSequence>
</target>
<publishWSDL key="fincas-wsdl"/>
<description/>
</proxy>
Mediator Class:
public class NTLMAuthMediator extends AbstractMediator {
private String domain;
private String host;
private String port;
private String username;
private String password;
public boolean mediate(MessageContext context) {
org.apache.axis2.context.MessageContext axis2MsgContext;
axis2MsgContext = ((Axis2MessageContext) context).getAxis2MessageContext();
String authString = (String)tmp.get("Authorization");
HttpTransportProperties.Authenticator auth = new HttpTransportProperties.Authenticator();
setCredentials(auth);
List<String> authSchemes = new ArrayList<String>();
authSchemes.add(HttpTransportProperties.Authenticator.NTLM);
auth.setAuthSchemes(authSchemes);
auth.setPreemptiveAuthentication(true); // send authentication info at once
Options options = new Options();
options.setProperty(HTTPConstants.CHUNKED, "false");
options.setProperty(HTTPConstants.REUSE_HTTP_CLIENT, "true");
options.setProperty(HTTPConstants.AUTHENTICATE, auth);
axis2MsgContext.setOptions(options);
return true;
}
private void setCredentials(Authenticator auth) {
boolean isDomain = this.domain != null ? true : this.domain.trim()
.length() > 0 ? true : false;
boolean isUsername = this.username != null ? true : this.username
.trim().length() > 0 ? true : false;
boolean isPassword = this.password != null ? true : this.password
.trim().length() > 0 ? true : false;
boolean isHost = this.host != null ? true
: this.host.trim().length() > 0 ? true : false;
boolean isPort = this.username != null ? true : this.username.trim()
.length() > 0 ? true : false;
if (!isDomain) {
throw new RuntimeException("Domain parameter must NOT be null");
}
if (!isUsername) {
throw new RuntimeException("Username parameter must NOT be null");
}
if (!isPassword) {
throw new RuntimeException("Password parameter must NOT be null");
}
if (!isHost) {
throw new RuntimeException("Host parameter must NOT be null");
}
if (!isPort) {
throw new RuntimeException("Port parameter must NOT be null");
}
auth.setUsername(this.username);
auth.setPassword(this.password);
auth.setDomain(this.domain);
auth.setRealm(AuthScope.ANY_REALM);
auth.setHost(this.host);
auth.setPort(Integer.valueOf(this.port));
auth.setPreemptiveAuthentication(true);
}
public String getDomain() {
return domain;
}
public void setDomain(String domain) {
this.domain = domain;
}
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
public String getPort() {
return port;
}
public void setPort(String port) {
this.port = port;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
I´m using wso2esb lastest version.
It´s really frustrating WSO2 does not provide documentation for this case... taking into consideration that NTLM is an old mechanism.
Any suggestion would be really appreciated
BTW the error is:
401 - Unauthorized: Access is denied due to invalid credentials.
回答1:
The truth is that I finally could solve this issue using ESB Mule nontheless I'm going to explain how I tried to solved it using WSO2ESB and finally MULE...
I was looking at was were going on with the NTLM regarding httpclient and after serveral sites I noticed that httpclient 3.x does not support this type of mechanism and It is because the NTLMSchema it uses.
I found this git repo https://github.com/DovAmir/httpclientAuthHelper this guy did a great job writing a NTLMcuston shema class that works with httpclient 3.x, I clone this repo generate the jar etc etc, then I modified the following class
org.apache.axis2.transport.http.AbstractHTTPSender
...
...
...
protected void setAuthenticationInfo(HttpClient agent, MessageContext msgCtx, HostConfiguration config)
throws AxisFault, UnknownHostException
{
String localhost = InetAddress.getLocalHost().getHostName().toUpperCase();
...
...
if (domain != null) {
creds = new NTCredentials(username, password, localhost, domain);
} else {
creds = new UsernamePasswordCredentials(username, password);
}
tmpHttpState.setCredentials(new AuthScope(host, port, realm), creds);
}
...
Then wrote a test case to make sure that the axis2 ServerClient actually works.. and it did. BUT... I think I don´t really understand the mechanism of PassThroughHttpSender. Aparently there is something else to do, to make it work, I don't really have the time for it and then I started thinking on something else and then I realized that we also have an ESB Mule 3.4.0 CE instance running...
I just had to modified the class
HttpConnector
{
...
...
// Properties added to enable NTLMv2 Auth
private String ntlmUser;
private String ntlmPassword;
private String ntlmDomain;
private String ntlmHost;
private String ntlmPort;
private boolean ntlmAuthentication;
//getters and setters
protected HttpClient doClientConnect() throws Exception
{
HttpState state = new HttpState();
HttpClient client = new HttpClient();
String localhost = InetAddress.getLocalHost().getHostName();
//TODO setting domain as well.
Credentials credentials;
if (getProxyUsername() != null || getNtlmUser() != null)
{
if (isProxyNtlmAuthentication())
{
credentials = new NTCredentials(getProxyUsername(), getProxyPassword(), localhost, "");
AuthScope authscope = new AuthScope(getProxyHostname(), getProxyPort());
state.setProxyCredentials(authscope, credentials);
}
else if(isNtlmAuthentication()){
AuthPolicy.registerAuthScheme(AuthPolicy.NTLM, CustomNTLM2Scheme.class);
AuthScope authscope = new AuthScope(getNtlmHost(), Integer.valueOf(getNtlmPort()));
credentials = new NTCredentials(getNtlmUser(), getNtlmPassword(), localhost, getNtlmDomain());
state.setCredentials(authscope, credentials);
}
else
{
credentials = new UsernamePasswordCredentials(getProxyUsername(), getProxyPassword());
AuthScope authscope = new AuthScope(getProxyHostname(), getProxyPort());
state.setProxyCredentials(authscope, credentials);
}
}
client.setState(state);
client.setHttpConnectionManager(getClientConnectionManager());
return client;
}
The flow for this is:
<?xml version="1.0" encoding="UTF-8"?>
<mule xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns="http://www.mulesoft.org/schema/mule/core"
xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
xmlns:spring="http://www.springframework.org/schema/beans" version="CE-3.4.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:pattern="http://www.mulesoft.org/schema/mule/pattern"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd
http://www.mulesoft.org/schema/mule/pattern http://www.mulesoft.org/schema/mule/pattern/current/mule-pattern.xsd">
<http:connector name="ntlmconn"
doc:name="HTTP-HTTPS">
<spring:property name="ntlmAuthentication" value="${ntlm.auth}"/>
<spring:property name="ntlmUser" value="${ntlm.username}"/>
<spring:property name="ntlmPassword" value="${ntlm.password}"/>
<spring:property name="ntlmHost" value="${ntlm.host}"/>
<spring:property name="ntlmPort" value="${ntlm.port}"/>
<spring:property name="ntlmDomain" value="${ntlm.domain}"/>
</http:connector>
<pattern:web-service-proxy name="fincas-service"
wsdlFile="${fincas.wsdl}">
<http:inbound-endpoint address="http://localhost:8080/fincas" />
<http:outbound-endpoint address="${endpoint}" connector-ref="ntlmconn"
exchange-pattern="request-response"></http:outbound-endpoint>
</pattern:web-service-proxy>
Finally with this patch I could make it work I have my WS deployed on the ESB and since the service is up and running I can spend more time trying to find a solution for WSO2ESB.
I hope It works for you as well.
来源：https://stackoverflow.com/questions/29156144/access-ntlm-secured-ws-througth-wso2esb