Can't get certificate in servlet filter?

i have a filter and a jsp. currently, both the filter and the jsp attempt to pull the X509 certificate from the request and log it (eventually the filter will perform authentication and the jsp will be a web service). however...the filter is unable to get the certificate, whereas the jsp gets the certificate without problems. why is this? some code below:
**** filter ****
doFilter(...) {
HttpServletRequest request = (HttpServletRequest)servletRequest;
X509Certificate[] obj = (X509Certificate[]) request.getAttribute("java.security.cert.X509Certificate");
but obj is always null. (i even enumerate the attributes - always empty)...
**** jsp ****
essentially the same X509Cert line as above, but obj contains the certificate.
any ideas? i'm using oracle's app server, which uses a modified Apache HTTP server, if that makes a difference.
thanks
chris

Hi Chris,
We talked a little bit couple weeks ago regarding my problem of getting the "Integrated Security" sample code to run. I finally got it running.
One of the problem was that the certificate information never got passed as environment variables (Null values). The cause is in the dads.conf. In the sample doc, they said it is supposed to be like:
<Location /pls/orasso>
PlsqlCGIEnvironmentList SSL_CLIENT_S_DN, SSL_CLIENT_CERT
</Location>
<IfDefine SSL>
<Location /pls>
SSLOptions ExportCertData StdEnvVars
</Location>
</IfDefine>
It doesn't work. It would work only if your remove <IfDefine SSL> & </IfDefine> directive. I don't know if its a bug since I always use SSL for that sample. Nonetheless it did resolve my problem.
I hope this may help.

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Can't get x509 from servlet filter?

i have a filter and a jsp. currently, both the filter and the jsp attempt to pull the X509 certificate from the request and log it (eventually the filter will perform authentication and the jsp will be a web service). however...the filter is unable to get the certificate, whereas the jsp gets the certificate without problems. why is this? some code below:
**** filter ****
doFilter(...) {
HttpServletRequest request = (HttpServletRequest)servletRequest;
X509Certificate[] obj = (X509Certificate[]) request.getAttribute("java.security.cert.X509Certificate");
but obj is always null. (i even enumerate the attributes - always empty)...
**** jsp ****
essentially the same X509Cert line as above, but obj contains the certificate.
any ideas? i'm using oracle's app server, which uses a modified Apache HTTP server, if that makes a difference.
thanks
chris

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