From 6a8414bcfb16411aae5dad46d467f0b66cdcaf5d Mon Sep 17 00:00:00 2001
From: Juan Batiz-Benet <juan@benet.ai>
Date: Sun, 11 Jan 2015 21:19:42 -0800
Subject: [PATCH] blockstore Allkeys: ignore non multihash keys

---
 blocks/blockstore/blockstore.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/blocks/blockstore/blockstore.go b/blocks/blockstore/blockstore.go
index ed24326c9..e4a9f7745 100644
--- a/blocks/blockstore/blockstore.go
+++ b/blocks/blockstore/blockstore.go
@@ -133,6 +133,13 @@ func (bs *blockstore) AllKeysChan(ctx context.Context, offset int, limit int) (<
 			// need to convert to u.Key using u.KeyFromDsKey.
 			k = u.KeyFromDsKey(ds.NewKey(e.Key))
 			log.Debug("blockstore: query got key", k)
+
+			// key must be a multihash. else ignore it.
+			_, err := mh.Cast([]byte(k))
+			if err != nil {
+				return "", true
+			}
+
 			return k, true
 		}
 	}
@@ -149,6 +156,9 @@ func (bs *blockstore) AllKeysChan(ctx context.Context, offset int, limit int) (<
 			if !ok {
 				return
 			}
+			if k == "" {
+				continue
+			}
 
 			select {
 			case <-ctx.Done():