fuzz: target for query_channel_range

Fuzz the decoding and encoding of query_channel_range.

tests/fuzz/fuzz-wire-query_channel_range.c

@@ -0,0 +1,49 @@
+#include "config.h"
+#include <assert.h>
+#include <ccan/mem/mem.h>
+#include <tests/fuzz/libfuzz.h>
+#include <tests/fuzz/wire.h>
+#include <wire/peer_wire.h>
+
+struct query_channel_range {
+	struct bitcoin_blkid chain_hash;
+	u32 first_blocknum;
+	u32 number_of_blocks;
+	struct tlv_query_channel_range_tlvs *tlvs;
+};
+
+static void *encode(const tal_t *ctx, const struct query_channel_range *s)
+{
+	return towire_query_channel_range(ctx, &s->chain_hash,
+					  s->first_blocknum,
+					  s->number_of_blocks, s->tlvs);
+}
+
+static struct query_channel_range *decode(const tal_t *ctx, const void *p)
+{
+	struct query_channel_range *s = tal(ctx, struct query_channel_range);
+
+	if (fromwire_query_channel_range(s, p, &s->chain_hash,
+					 &s->first_blocknum,
+					 &s->number_of_blocks, &s->tlvs))
+		return s;
+	return tal_free(s);
+}
+
+static bool equal(const struct query_channel_range *x,
+		  const struct query_channel_range *y)
+{
+	size_t upto_tlvs = (uintptr_t)&x->tlvs - (uintptr_t)x;
+	if (memcmp(x, y, upto_tlvs) != 0)
+		return false;
+
+	assert(x->tlvs && y->tlvs);
+	return memeq(x->tlvs->query_option, tal_bytelen(x->tlvs->query_option),
+		     y->tlvs->query_option, tal_bytelen(y->tlvs->query_option));
+}
+
+void run(const u8 *data, size_t size)
+{
+	test_decode_encode(data, size, WIRE_QUERY_CHANNEL_RANGE,
+			   struct query_channel_range);
+}