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rcordier pushed a commit to branch master
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The following commit(s) were added to refs/heads/master by this push:
new 05da6d9327 [FIX] Prevent queue poisoning for spool
05da6d9327 is described below
commit 05da6d93275dbe39451851f58badaf5d7a1d0bb5
Author: Benoit TELLIER <btell...@linagora.com>
AuthorDate: Mon Oct 21 17:06:11 2024 +0200
[FIX] Prevent queue poisoning for spool
Create a bad payload and post it to the spool mail queue directly via rabbit
Then it would trigger an exception, propagated onto rabbitmq driver
The message is then unhandled and unacked
Until the timeout is reach to which point customers dies
unacked message are put back to the queue and delivered again
And message get delivered in loop
---
.../java/org/apache/james/queue/rabbitmq/Dequeuer.java | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git
a/server/queue/queue-rabbitmq/src/main/java/org/apache/james/queue/rabbitmq/Dequeuer.java
b/server/queue/queue-rabbitmq/src/main/java/org/apache/james/queue/rabbitmq/Dequeuer.java
index b5eee6ba93..919ce17748 100644
---
a/server/queue/queue-rabbitmq/src/main/java/org/apache/james/queue/rabbitmq/Dequeuer.java
+++
b/server/queue/queue-rabbitmq/src/main/java/org/apache/james/queue/rabbitmq/Dequeuer.java
@@ -39,7 +39,6 @@ import org.apache.mailet.Mail;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-import com.github.fge.lambdas.Throwing;
import com.github.fge.lambdas.consumers.ThrowingConsumer;
import reactor.core.publisher.Flux;
@@ -178,11 +177,14 @@ class Dequeuer {
private Mono<MailReferenceDTO> toMailReference(AcknowledgableDelivery
delivery) {
return Mono.fromCallable(delivery::getBody)
-
.map(Throwing.function(mailReferenceSerializer::read).sneakyThrow())
- .onErrorResume(e -> {
- LOGGER.error("Fail to deserialize MailReferenceDTO. Discarding
this message to prevent an infinite loop.", e);
- delivery.nack(!REQUEUE);
- return Mono.empty();
+ .handle((bytes, sink) -> {
+ try {
+ sink.next(mailReferenceSerializer.read(bytes));
+ } catch (Exception e) {
+ LOGGER.error("Fail to deserialize MailReferenceDTO.
Discarding this message to prevent an infinite loop.", e);
+ delivery.nack(!REQUEUE);
+ sink.complete();
+ }
});
}
}
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