michaeljmarshall commented on code in PR #18130:
URL: https://github.com/apache/pulsar/pull/18130#discussion_r1073869123
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pulsar-broker/src/main/java/org/apache/pulsar/broker/service/ServerCnx.java:
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@@ -707,73 +709,96 @@ private void completeConnect(int clientProtoVersion,
String clientVersion, boole
}
// According to auth result, send newConnected or newAuthChallenge command.
- private State doAuthentication(AuthData clientData,
- int clientProtocolVersion,
- String clientVersion) throws Exception {
-
+ private CompletableFuture<Void> doAuthenticationAsync(AuthData clientData,
int clientProtocolVersion,
+ String
clientVersion) {
// The original auth state can only be set on subsequent auth attempts
(and only
// in presence of a proxy and if the proxy is forwarding the
credentials).
// In this case, the re-validation needs to be done against the
original client
- // credentials.
- boolean useOriginalAuthState = (originalAuthState != null);
- AuthenticationState authState = useOriginalAuthState ?
originalAuthState : this.authState;
- String authRole = useOriginalAuthState ? originalPrincipal :
this.authRole;
- AuthData brokerData = authState.authenticate(clientData);
-
- if (log.isDebugEnabled()) {
- log.debug("Authenticate using original auth state : {}, role =
{}", useOriginalAuthState, authRole);
- }
+ // credentials, but we only can new an authentication state, because
some authentication data(TLS, SASL)
+ // based on outside service.
+ // If we can get the role from the authentication sate, the global
variable need to be updated.
- if (authState.isComplete()) {
- // Authentication has completed. It was either:
- // 1. the 1st time the authentication process was done, in which
case we'll send
- // a `CommandConnected` response
- // 2. an authentication refresh, in which case we need to refresh
authenticationData
-
- String newAuthRole = authState.getAuthRole();
-
- // Refresh the auth data.
- this.authenticationData = authState.getAuthDataSource();
Review Comment:
> No. We must check both the `originalAuthState` and `authState`, if you
don't check, you will overstep your authority.
I agree that we currently check authorization on the proxy role and the
original principal as well as with the proxy's `authenticationDataSource` and
the `originalAuthenticationDataSource`. However, I am not sure why that is
necessary, and as we've discussed, this is not even done correctly for the auth
data source.
What is the case that a client will overstep its authority?
When the proxy is forwarding authentication data, it seems sufficient to
verify that the proxy's authentication data is valid for a proxy as a one time
check during connection initialization. All subsequent auth challenges will go
to the client anyway.
If the proxy is unable to forward authentication data, then the broker will
only have the proxy's authentication data and the `originalPrincipal`.
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