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Revision 6627

Added by ben leinfelder over 12 years ago

check replication table (not keystore) for trusted server host name match

View differences:

src/edu/ucsb/nceas/metacat/replication/ReplicationServlet.java
26 26 

  		




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package edu.ucsb.nceas.metacat.replication;


  		




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import java.io.FileInputStream;


  		




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import java.io.IOException;


  		




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import java.io.InputStream;


  		




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import java.io.OutputStream;


  		




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import java.io.PrintWriter;


  		




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import java.security.KeyStore;


  		




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import java.security.KeyStoreException;


  		




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import java.security.NoSuchAlgorithmException;


  		




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import java.security.cert.Certificate;


  		




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import java.security.cert.CertificateException;


  		




  
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import java.net.URI;


  		




  
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import java.net.URISyntaxException;


  		




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import java.security.cert.X509Certificate;


  		




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import java.util.Enumeration;


  		




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import java.util.Hashtable;


  		




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import javax.naming.InvalidNameException;


  		




  
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import javax.naming.ldap.LdapName;


  		




  
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import javax.naming.ldap.Rdn;


  		




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import javax.servlet.ServletConfig;


  		




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import javax.servlet.ServletException;


  		




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import javax.servlet.http.HttpServlet;


  		




  ......




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import org.apache.log4j.Logger;


  		




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import org.dataone.client.auth.CertificateManager;


  		




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import edu.ucsb.nceas.metacat.properties.PropertyService;


  		




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import edu.ucsb.nceas.metacat.service.ServiceService;


  		




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import edu.ucsb.nceas.metacat.service.SessionService;


  		




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import edu.ucsb.nceas.metacat.shared.MetacatUtilException;


  		




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import edu.ucsb.nceas.metacat.shared.ServiceException;


  		




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import edu.ucsb.nceas.metacat.util.AuthUtil;


  		




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import edu.ucsb.nceas.metacat.util.SessionData;


  		




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import edu.ucsb.nceas.utilities.PropertyNotFoundException;


  		




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public class ReplicationServlet extends HttpServlet {


  		




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  ......




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		try {


  		




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			// check if the server is included in the list of replicated servers


  		




  
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			server = ((String[]) params.get("server"))[0];


  		




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			if (!action.equals("servercontrol") && !action.equals("stop")


  		




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					&& !action.equals("start") && !action.equals("getall")) {


  		




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  ......




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				boolean isValid = false;


  		




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				String msg = "Client certificate is invalid";


  		




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				try {


  		




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					isValid = hasValidCertificate(request);


  		




  
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					isValid = hasValidCertificate(request, server);


  		




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				} catch (Exception e) {


  		




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					msg = "Could not verify client certificate: " + e.getMessage();


  		




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					logMetacat.error(msg, e);


  		




  ......




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					return;


  		




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				}


  		




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				server = ((String[]) params.get("server"))[0];


  		




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				if (ReplicationService.getServerCodeForServerName(server) == 0) {


  		




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					logReplication.debug("ReplicationServlet.handleGetOrPost - Action \"" + action + "\" rejected for server: "


  		




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							+ server);


  		




  ......




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		}


  		




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	}


  		




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	private boolean hasValidCertificate(HttpServletRequest request) throws KeyStoreException, PropertyNotFoundException, NoSuchAlgorithmException, CertificateException, IOException {


  		




  
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	private boolean hasValidCertificate(HttpServletRequest request, String server) throws InvalidNameException, URISyntaxException, ServiceException {


  		




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		// get the certificate from the request


  		




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		X509Certificate certificate = CertificateManager.getInstance().getCertificate(request);


  		




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		if (certificate != null) {


  		




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			String givenSubject = CertificateManager.getInstance().getSubjectDN(certificate);


  		




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			logMetacat.debug("Given certificate subject: " + givenSubject);


  		




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			// load the keystore


  		




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			KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());


  		




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			InputStream is = new FileInputStream(PropertyService.getProperty("replication.keystore.file"));


  		




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			String password = PropertyService.getProperty("replication.keystore.password");


  		




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			keyStore.load(is, password.toCharArray());


  		




  
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			// get the CN from the DN:


  		




  
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			String givenServerCN = null;


  		




  
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			LdapName ldapName = new LdapName(givenSubject);


  		




  
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			for (Rdn rdn: ldapName.getRdns()) {


  		




  
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				if (rdn.getType().equalsIgnoreCase("CN")) {


  		




  
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					givenServerCN = (String) rdn.getValue();


  		




  
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					logMetacat.debug("Given server CN: " + givenServerCN);


  		




  
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					break;


  		




  
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				}


  		




  
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			}


  		




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			// this is expensive


  		




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			Enumeration<String> aliases = keyStore.aliases();


  		




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			while (aliases.hasMoreElements()) {


  		




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				// check that it contains our client's entry


  		




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				String alias = aliases.nextElement();


  		




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				logMetacat.debug("checking keyStore alias: " + alias);


  		




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				Certificate entryCertificate = keyStore.getCertificate(alias);


  		




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				if (entryCertificate instanceof X509Certificate) {


  		




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					// check the subject matches


  		




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					String entrySubject = CertificateManager.getInstance().getSubjectDN((X509Certificate) entryCertificate);


  		




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					logMetacat.debug("Entry certificate subject: " + entrySubject);


  		




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					if (entrySubject.equals(givenSubject)) {


  		




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						// TODO: additional verification


  		




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//						try {


  		




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//							certificate.verify(entryCertificate.getPublicKey());


  		




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//						} catch (Exception e) {


  		




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//							logMetacat.warn("Certificate not verifiable: " + e.getMessage(), e);


  		




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//							continue;


  		




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//						}


  		




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						// if we pass verification, we did it!


  		




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						return true;


  		




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					}


  		




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				}	


  		




  
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			// check the replication table for this server


  		




  
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			int serverCode = ReplicationService.getServerCodeForServerName(server);


  		




  
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			if (serverCode != 0) {


  		




  
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				// does it match (roughly) the certificate


  		




  
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				URI serverURI = new URI("https://" + server);


  		




  
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				String serverHost = serverURI.getHost();


  		




  
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				logMetacat.debug("Checking against registerd replication server host name: " + serverHost);


  		




  
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				// remove wildcard from certificate CN if it is a wildcard certificate


  		




  
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				givenServerCN = givenServerCN.replace("*", "");


  		




  
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				// match (ends with) same certificate name (domain)?


  		




  
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				return serverHost.endsWith(givenServerCN);


  		




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			}


  		




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		}


  		




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 		return false;


  		












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