Merge pull request redis#1570 from AdamKorcz/fuzz1

Add fuzzer to integrate go-redis into OSS-fuzz

fuzz.go

@@ -0,0 +1,46 @@
+// +build gofuzz
+
+package redis
+
+import (
+	"context"
+	"time"
+)
+
+var (
+	ctx = context.Background()
+	rdb *Client
+)
+
+func init() {
+	rdb = NewClient(&Options{
+		Addr:         ":6379",
+		DialTimeout:  10 * time.Second,
+		ReadTimeout:  10 * time.Second,
+		WriteTimeout: 10 * time.Second,
+		PoolSize:     10,
+		PoolTimeout:  10 * time.Second,
+	})
+}
+
+func Fuzz(data []byte) int {
+	arrayLen := len(data)
+	if arrayLen < 4 {
+		return -1
+	}
+	maxIter := int(uint(data[0]))
+	for i := 0; i < maxIter && i < arrayLen; i++ {
+		n := i % arrayLen
+		if n == 0 {
+			_ = rdb.Set(ctx, string(data[i:]), string(data[i:]), 0).Err()
+		} else if n == 1 {
+			_, _ = rdb.Get(ctx, string(data[i:])).Result()
+		} else if n == 2 {
+			_, _ = rdb.Incr(ctx, string(data[i:])).Result()
+		} else if n == 3 {
+			var cursor uint64
+			_, _, _ = rdb.Scan(ctx, cursor, string(data[i:]), 10).Result()
+		}
+	}
+	return 1
+}