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GsiFtpDoorV1.java
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GsiFtpDoorV1.java
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package org.dcache.ftp.door;
import org.globus.gsi.CredentialException;
import org.globus.gsi.GSIConstants;
import org.globus.gsi.X509Credential;
import org.globus.gsi.gssapi.GSSConstants;
import org.globus.gsi.gssapi.GlobusGSSCredentialImpl;
import org.gridforum.jgss.ExtendedGSSContext;
import org.gridforum.jgss.ExtendedGSSManager;
import org.ietf.jgss.GSSContext;
import org.ietf.jgss.GSSCredential;
import org.ietf.jgss.GSSException;
import org.ietf.jgss.GSSManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.security.auth.Subject;
import java.io.IOException;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import diskCacheV111.doors.FTPTransactionLog;
import diskCacheV111.util.CacheException;
import diskCacheV111.util.PermissionDeniedCacheException;
import org.dcache.auth.LoginNamePrincipal;
import org.dcache.auth.Subjects;
import org.dcache.cells.Option;
import org.dcache.util.CertificateFactories;
import org.dcache.util.Crypto;
import static java.util.Arrays.asList;
/**
*
* @author timur
*/
public class GsiFtpDoorV1 extends GssFtpDoorV1
{
private static final Logger LOGGER = LoggerFactory.getLogger(GsiFtpDoorV1.class);
@Option(
name="service-key",
required=true
)
protected String service_key;
@Option(
name="service-cert",
required=true
)
protected String service_cert;
@Option(
name="service-trusted-certs",
required=true
)
protected String service_trusted_certs;
@Option(
name="gridftp.security.ciphers",
required=true
)
protected String cipherFlags;
private CertificateFactory cf;
private String _user;
@Override
public void init()
{
_gssFlavor = "gsi";
ftpDoorName="GSI FTP";
cf = CertificateFactories.newX509CertificateFactory();
super.init();
}
@Override
public void startTlog(FTPTransactionLog tlog, String path, String action) {
if (_subject != null) {
try {
String user =
_user + "("+Subjects.getUid(_subject) + "." + Subjects.getPrimaryGid(_subject) + ")";
tlog.begin(user, "gsiftp", action, path, _remoteAddress.getAddress());
}
catch (Exception e) {
LOGGER.error("GsiFtpDoor: couldn't start tLog. " +
"Ignoring exception: {}", e.getMessage());
}
}
}
@Override
protected GSSContext getServiceContext() throws GSSException {
X509Credential serviceCredential;
try {
serviceCredential = new X509Credential(service_cert, service_key);
}
catch (CredentialException gce) {
String errmsg = "GsiFtpDoor: couldn't load " +
"host globus credentials: " + gce.toString();
LOGGER.error(errmsg);
throw new GSSException(GSSException.NO_CRED, 0, errmsg);
}
catch(IOException ioe) {
throw new GSSException(GSSException.NO_CRED, 0,
"could not load host globus credentials "+ioe.toString());
}
GSSCredential cred = new GlobusGSSCredentialImpl(serviceCredential,
GSSCredential.ACCEPT_ONLY);
GSSManager manager = ExtendedGSSManager.getInstance();
ExtendedGSSContext context =
(ExtendedGSSContext)manager.createContext(cred);
context.setOption(GSSConstants.GSS_MODE, GSIConstants.MODE_GSI);
context.setBannedCiphers(Crypto.getBannedCipherSuitesFromConfigurationValue(cipherFlags));
return context;
}
@Override
public void ftp_user(String arg)
{
if (arg.equals("")) {
reply(err("USER",arg));
return;
}
if (_serviceContext == null || !_serviceContext.isEstablished()) {
reply("530 Authentication required");
return;
}
Subject subject = new Subject();
try {
subject.getPrincipals().add(_origin);
if (!arg.equals(GLOBUS_URL_COPY_DEFAULT_USER)) {
subject.getPrincipals().add(new LoginNamePrincipal(arg));
}
if (!(_serviceContext instanceof ExtendedGSSContext)) {
throw new RuntimeException("GSSContext not instance of ExtendedGSSContext");
}
ExtendedGSSContext extendedcontext =
(ExtendedGSSContext) _serviceContext;
X509Certificate[] chain =
(X509Certificate[]) extendedcontext.inquireByOid(GSSConstants.X509_CERT_CHAIN);
subject.getPublicCredentials().add(cf.generateCertPath(asList(chain)));
login(subject);
_user = arg;
reply("200 User " + arg + " logged in");
} catch (GSSException | CertificateException e) {
LOGGER.error("Failed to extract X509 chain: {}", e.toString());
println("530 Login failed: " + e.getMessage());
} catch (PermissionDeniedCacheException e) {
LOGGER.warn("Login denied for {}: {}", subject, e.getMessage());
println("530 Login incorrect");
} catch (CacheException e) {
LOGGER.error("Login failed for {}: {}", subject, e.getMessage());
println("530 Login failed: " + e.getMessage());
}
}
}