[opencms-dev] can't upload files in opencms 6

[Inigo]

Hello everybody:
    I have a secure site that uses OpenCMS. I have a problem when trying 
to upload files. I think OpenCMS can't find the certification for my 
site. How can I "force" OpenCMS to recognize the certification?

    This is the trace I am getting:

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(Unknown Source)
	at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(Unknown Source)
	at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source)
	at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source)
	at
com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(Unknown
Source)
	at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(Unknown
Source)
	at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Unknown Source)
	at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Unknown
Source)
	at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
	at
com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown
Source)
	at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRecord(Unknown
Source)
	at com.sun.net.ssl.internal.ssl.AppOutputStream.write(Unknown Source)
	at
org.apache.commons.httpclient.HttpConnection$WrappedOutputStream.write(HttpConnection.java:1360)
	at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
	at java.io.BufferedOutputStream.flush(Unknown Source)
	at
org.apache.commons.httpclient.HttpConnection.flushRequestOutputStream(HttpConnection.java:790)
	at
org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:2271)
	at
org.apache.commons.httpclient.HttpMethodBase.processRequest(HttpMethodBase.java:2651)
	at
org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1087)
	at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:643)
	at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:497)
	at
org.opencms.applet.upload.FileUploadApplet.uploadZipFile(FileUploadApplet.java:605)
	at
org.opencms.applet.upload.FileUploadApplet.run(FileUploadApplet.java:314)
	at java.lang.Thread.run(Unknown Source)
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(Unknown Source)
	at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
	at sun.security.validator.Validator.validate(Unknown Source)
	at
com.sun.net.ssl.internal.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown
Source)
	at
com.sun.net.ssl.internal.ssl.JsseX509TrustManager.checkServerTrusted(Unknown
Source)
	... 20 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException:
unable to find valid certification path to requested target
	at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown
Source)
	at java.security.cert.CertPathBuilder.build(Unknown Source)
	... 25 more