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added authentication propagating listener #233

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added authentication propagating listener #233

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44 changes: 43 additions & 1 deletion ...g-boot-starter/src/main/java/org/lognet/springboot/grpc/security/SecurityInterceptor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -95,7 +95,7 @@ public <ReqT, RespT> ServerCall.Listener<ReqT> interceptCall(
Context ctx = Context.current()
.withValue(GrpcSecurity.AUTHENTICATION_CONTEXT_KEY, SecurityContextHolder.getContext().getAuthentication());

return Contexts.interceptCall(ctx, call, headers, next);
return Contexts.interceptCall(ctx, call, headers, authenticationPropagatingHandler(next));
} catch (AccessDeniedException e) {
return fail(next, call, headers, Status.PERMISSION_DENIED, e);
} catch (Exception e) {
Expand All @@ -107,6 +107,48 @@ public <ReqT, RespT> ServerCall.Listener<ReqT> interceptCall(

}

private <ReqT, RespT> ServerCallHandler<ReqT, RespT> authenticationPropagatingHandler(ServerCallHandler<ReqT, RespT> next) {

return (call, headers) -> new ForwardingServerCallListener.SimpleForwardingServerCallListener<ReqT>(next.startCall(call, headers)) {

@Override
public void onMessage(ReqT message) {
propagateAuthentication(() -> super.onMessage(message));
}

@Override
public void onHalfClose() {
propagateAuthentication(super::onHalfClose);
}

@Override
public void onCancel() {
propagateAuthentication(super::onCancel);
}

@Override
public void onComplete() {
propagateAuthentication(super::onComplete);
}

@Override
public void onReady() {
propagateAuthentication(super::onReady);
}

private void propagateAuthentication(Runnable runnable) {
try {
SecurityContextHolder.getContext().setAuthentication(GrpcSecurity.AUTHENTICATION_CONTEXT_KEY.get());
runnable.run();
} finally {
SecurityContextHolder.clearContext();
}
}

};

}

private <RespT, ReqT> ServerCall.Listener<ReqT> fail(ServerCallHandler<ReqT, RespT> next, ServerCall<ReqT, RespT> call, Metadata headers,final Status status, Exception exception) {

if (authCfg.isFailFast()) {
Expand Down