From e0e995d889ad5d69a6e20e04027413269c5bc1a8 Mon Sep 17 00:00:00 2001
From: vyzo <vyzo@hackzen.org>
Date: Wed, 16 Jan 2019 12:26:26 +0200
Subject: [PATCH] add check for blacklisted sources

---
 pubsub.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pubsub.go b/pubsub.go
index 1a85642..790db65 100644
--- a/pubsub.go
+++ b/pubsub.go
@@ -607,6 +607,12 @@ func (p *PubSub) pushMsg(vals []*topicVal, src peer.ID, msg *Message) {
 		return
 	}
 
+	// even if they are forwarded by good peers
+	if _, ok := p.blacklist[msg.GetFrom()]; ok {
+		log.Warningf("dropping message from blacklisted source %s", src)
+		return
+	}
+
 	// reject unsigned messages when strict before we even process the id
 	if p.signStrict && msg.Signature == nil {
 		log.Debugf("dropping unsigned message from %s", src)