I have a backend application that makes several types of connections.
One is to a Web Service whose client was built with Apache CXF. The
other is to a MySQL database. Because of the unusual security situation
in which the servers are forced to live (DMZ) we need to encrypt the
transmissions to the DB server, so we are going to use MySQL's "REQUIRE
SSL" functionality which requires a certificate from a CA to achieve
logon as the database user. This cert is placed in a truststore which
becomes known to the application at startup via command-line defines:
-Djavax.net.ssl.trustStore=/path/to/truststore
-Djavax.net.ssl.trustStorePassword=secret
Since we are not using MySQL's "REQUIRE X509", we no not need client
certificates and keys.
This all works fine.
However ...
I have now discovered that making these command-line defines breaks the
CXF-based Web Service client. This connection is over https to a Web
Server that does not require or accept certificates. When this
connection is attempted with the application in this mode (i.e. with the
two defines in the System properties), it fails with:
2009-09-22 09:16:02,122 [robo/AIM:stevecoh43/38] ERROR
address.AddressValidator - [SOAP-ENV:Fault: null]
javax.xml.ws.soap.SOAPFaultException:
sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target
at
org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:192)
at $Proxy32.validateLocation(Unknown Source)
...
Caused by: org.apache.cxf.interceptor.Fault:
sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target
at
org.apache.cxf.interceptor.AbstractOutDatabindingInterceptor.writeParts(AbstractOutDatabindingInterceptor.java:93)
at
org.apache.cxf.interceptor.BareOutInterceptor.handleMessage(BareOutInterceptor.java:68)
at
org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:221)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:276)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:222)
at org.apache.cxf.frontend.ClientProxy.invokeSync(ClientProxy.java:73)
at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:171)
... 8 more
Caused by: com.ctc.wstx.exc.WstxIOException:
sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target
at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:313)
at
org.apache.cxf.interceptor.AbstractOutDatabindingInterceptor.writeParts(AbstractOutDatabindingInterceptor.java:91)
... 14 more
Caused by: javax.net.ssl.SSLHandshakeException:
sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1611)
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:1035)
at
com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:124)
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:1112)
at
com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1139)
at
com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1123)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:434)
at
sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:166)
at
sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:904)
at
sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:230)
at
org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleHeadersTrustCaching(HTTPConduit.java:1807)
at
org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.onFirstWrite(HTTPConduit.java:1765)
at
org.apache.cxf.io.AbstractWrappedOutputStream.write(AbstractWrappedOutputStream.java:42)
at com.ctc.wstx.io.UTF8Writer.flush(UTF8Writer.java:96)
at com.ctc.wstx.sw.BufferingXmlWriter.flush(BufferingXmlWriter.java:214)
at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:311)
... 15 more
Caused by: sun.security.validator.ValidatorException: PKIX path building
failed: sun.security.provider.certpath.SunCertPathBuilderException:
unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:285)
at
sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:191)
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
com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:249)
at
com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1014)
... 32 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException:
unable to find valid certification path to requested target
at
sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:174)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:238)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:280)
... 38 more
If I turn off the SSL requirement and remove the command line defines,
this connection works as designed.
So the question is
where is the hook, either in Java or CXF by which I can configure this
to use the SSL cert for the connections to the MySQL server but not for
other types of connection?
