How do you programatically authenticate to a web server using NTLM Authentication with apache's commons httpclient?

Question

I'm using this code, and I get the stack trace that is listed below. I've got this working with just https and with basic authentication, but not ntlm.

HttpClient client = null;
HttpMethod get = null;
try
{
  Protocol myhttps = new Protocol("https", ((ProtocolSocketFactory) new EasySSLProtocolSocketFactory()), 443);
  Protocol.registerProtocol("https", myhttps);
  client = new HttpClient();
  get = new GetMethod("https://tt.dummycorp.com/tmtrack/");
  Credentials creds = new NTCredentials("dummy", "dummy123", "host", "DUMMYDOMAIN");
  client.getState().setCredentials(AuthScope.ANY, creds);
  get.setDoAuthentication(true);
  int resultCode = client.executeMethod(get);
  System.out.println(get.getResponseBodyAsString());
}

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.CertPathValidatorException: signature check failed
    at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1591)
    at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:187)
    at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Handshaker.java:181)
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:975)
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:123)
    at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:516)
    at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:454)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:884)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1096)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:623)
    at com.sun.net.ssl.internal.ssl.AppOutputStream.write(AppOutputStream.java:59)
    at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
    at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
    at org.apache.commons.httpclient.HttpConnection.flushRequestOutputStream(HttpConnection.java:828)
    at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:2116)
    at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1096)
    at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398)
    at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
    at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
    at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
    at com.dummycorp.teamtrack.TeamTrackHack.main(TeamTrackHack.java:38)
Caused by: sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.CertPathValidatorException: signature check failed
    at sun.security.validator.PKIXValidator.doValidate(PKIXValidator.java:251)
    at sun.security.validator.PKIXValidator.doValidate(PKIXValidator.java:234)
    at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:158)
    at sun.security.validator.Validator.validate(Validator.java:218)
    at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:126)
    at com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:209)
    at org.apache.commons.httpclient.contrib.ssl.EasyX509TrustManager.checkServerTrusted(EasyX509TrustManager.java:104)
    at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:967)
    ... 17 more
Caused by: java.security.cert.CertPathValidatorException: signature check failed
    at sun.security.provider.certpath.PKIXMasterCertPathValidator.validate(PKIXMasterCertPathValidator.java:139)
    at sun.security.provider.certpath.PKIXCertPathValidator.doValidate(PKIXCertPathValidator.java:316)
    at sun.security.provider.certpath.PKIXCertPathValidator.engineValidate(PKIXCertPathValidator.java:178)
    at java.security.cert.CertPathValidator.validate(CertPathValidator.java:250)
    at sun.security.validator.PKIXValidator.doValidate(PKIXValidator.java:246)
    ... 24 more
Caused by: java.security.SignatureException: Signature does not match.
    at sun.security.x509.X509CertImpl.verify(X509CertImpl.java:446)
    at sun.security.provider.certpath.BasicChecker.verifySignature(BasicChecker.java:133)
    at sun.security.provider.certpath.BasicChecker.check(BasicChecker.java:112)
    at sun.security.provider.certpath.PKIXMasterCertPathValidator.validate(PKIXMasterCertPathValidator.java:117)
    ... 28 more

Answer 1

Have a look at the utility posted here.

It solves different problem, namely the absence of the certificate, whereas you have invalid certificate installed, but probably its verbose output about installed certificates could be helpful.

Answer 2

HttpClient does not fully support NTLM. Please have a look at Known limitations and problems. The HttpClient documentation regarding NTLM is a bit confusing, but the bottom line is that they do not support NTLMv2 which makes it hardly usable in this regard.

NTLM is supported by standard java HttpURLConnection (link), but HttpClient has some advantages over jdk's HttpURLConnection.