/** Called to invalidate this credential element. */
public void dispose() throws GSSException {
try {
destroy();
} catch (javax.security.auth.DestroyFailedException e) {
GSSException gssException =
new GSSException(
GSSException.FAILURE, -1, "Could not destroy credentials - " + e.getMessage());
gssException.initCause(e);
}
}
private static KerberosTicket getTgt(int caller, Krb5NameElement name, int initLifetime)
throws GSSException {
String realm = null;
final String clientPrincipal, tgsPrincipal = null;
/*
* Find the TGT for the realm that the client is in. If the client
* name is not available, then use the default realm.
*/
if (name != null) {
clientPrincipal = (name.getKrb5PrincipalName()).getName();
realm = (name.getKrb5PrincipalName()).getRealmAsString();
} else {
clientPrincipal = null;
try {
Config config = Config.getInstance();
realm = config.getDefaultRealm();
} catch (KrbException e) {
GSSException ge =
new GSSException(
GSSException.NO_CRED,
-1,
"Attempt to obtain INITIATE credentials failed!" + " (" + e.getMessage() + ")");
ge.initCause(e);
throw ge;
}
}
final AccessControlContext acc = AccessController.getContext();
try {
final int realCaller = (caller == GSSUtil.CALLER_UNKNOWN) ? GSSUtil.CALLER_INITIATE : caller;
return AccessController.doPrivileged(
new PrivilegedExceptionAction<KerberosTicket>() {
public KerberosTicket run() throws Exception {
return Krb5Util.getTicket(realCaller, clientPrincipal, tgsPrincipal, acc);
}
});
} catch (PrivilegedActionException e) {
GSSException ge =
new GSSException(
GSSException.NO_CRED,
-1,
"Attempt to obtain new INITIATE credentials failed!" + " (" + e.getMessage() + ")");
ge.initCause(e.getException());
throw ge;
}
}
public int initSecContext(InputStream inStream, OutputStream outStream) throws GSSException {
if (mechCtxt != null && currentState != IN_PROGRESS) {
throw new GSSExceptionImpl(GSSException.FAILURE, "Illegal call to initSecContext");
}
GSSHeader gssHeader = null;
int inTokenLen = -1;
GSSCredentialSpi credElement = null;
boolean firstToken = false;
try {
if (mechCtxt == null) {
if (myCred != null) {
try {
credElement = myCred.getElement(mechOid, true);
} catch (GSSException ge) {
if (GSSUtil.isSpNegoMech(mechOid) && ge.getMajor() == GSSException.NO_CRED) {
credElement = myCred.getElement(myCred.getMechs()[0], true);
} else {
throw ge;
}
}
}
GSSNameSpi nameElement = targName.getElement(mechOid);
mechCtxt = gssManager.getMechanismContext(nameElement, credElement, reqLifetime, mechOid);
mechCtxt.requestConf(reqConfState);
mechCtxt.requestInteg(reqIntegState);
mechCtxt.requestCredDeleg(reqCredDelegState);
mechCtxt.requestMutualAuth(reqMutualAuthState);
mechCtxt.requestReplayDet(reqReplayDetState);
mechCtxt.requestSequenceDet(reqSequenceDetState);
mechCtxt.requestAnonymity(reqAnonState);
mechCtxt.setChannelBinding(channelBindings);
mechCtxt.requestDelegPolicy(reqDelegPolicyState);
objId = new ObjectIdentifier(mechOid.toString());
currentState = IN_PROGRESS;
firstToken = true;
} else {
if (mechCtxt.getProvider().getName().equals("SunNativeGSS")
|| GSSUtil.isSpNegoMech(mechOid)) {
// do not parse GSS header for native provider or SPNEGO
// mech
} else {
// parse GSS header
gssHeader = new GSSHeader(inStream);
if (!gssHeader.getOid().equals((Object) objId))
throw new GSSExceptionImpl(
GSSException.DEFECTIVE_TOKEN,
"Mechanism not equal to " + mechOid.toString() + " in initSecContext token");
inTokenLen = gssHeader.getMechTokenLength();
}
}
byte[] obuf = mechCtxt.initSecContext(inStream, inTokenLen);
int retVal = 0;
if (obuf != null) {
retVal = obuf.length;
if (mechCtxt.getProvider().getName().equals("SunNativeGSS")
|| (!firstToken && GSSUtil.isSpNegoMech(mechOid))) {
// do not add GSS header for native provider or SPNEGO
// except for the first SPNEGO token
} else {
// add GSS header
gssHeader = new GSSHeader(objId, obuf.length);
retVal += gssHeader.encode(outStream);
}
outStream.write(obuf);
}
if (mechCtxt.isEstablished()) currentState = READY;
return retVal;
} catch (IOException e) {
throw new GSSExceptionImpl(GSSException.DEFECTIVE_TOKEN, e.getMessage());
}
}