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fuzz: add a fuzz target for common/bip32

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Signed-off-by: Antoine Poinsot <darosior@protonmail.com>
This commit is contained in:
Antoine Poinsot 2020-09-23 12:13:46 +02:00 committed by Christian Decker
parent a89a018475
commit f0061d0606
2 changed files with 53 additions and 0 deletions
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1
tests/fuzz/Makefile
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@ -13,6 +13,7 @@ FUZZ_COMMON_OBJS := \
common/base32.o \
common/base64.o \
common/bech32.o \
common/bip32.o \
common/bigsize.o \
common/json.o \
common/json_stream.o \

52
tests/fuzz/fuzz-bip32.c Normal file
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@ -0,0 +1,52 @@
#include <assert.h>
#include <stdint.h>
#include <string.h>
#include <tests/fuzz/libfuzz.h>
#include <ccan/tal/tal.h>
#include <common/bip32.h>
#include <wally_bip32.h>
void init(int *argc, char ***argv)
{
}
void run(const uint8_t *data, size_t size)
{
struct ext_key xkey;
struct bip32_key_version version;
u8 *wire_buff;
const uint8_t **xkey_chunks, **ver_chunks, *wire_ptr;
size_t wire_max;
if (size < BIP32_SERIALIZED_LEN)
return;
xkey_chunks = get_chunks(NULL, data, size, BIP32_SERIALIZED_LEN);
for (size_t i = 0; i < tal_count(xkey_chunks); i++) {
wire_max = tal_bytelen(xkey_chunks[i]);
wire_ptr = xkey_chunks[i];
fromwire_ext_key(&wire_ptr, &wire_max, &xkey);
if (wire_ptr) {
wire_buff = tal_arr(NULL, uint8_t, BIP32_SERIALIZED_LEN);
towire_ext_key(&wire_buff, &xkey);
tal_free(wire_buff);
}
}
tal_free(xkey_chunks);
ver_chunks = get_chunks(NULL, data, size, 4);
for (size_t i = 0; i < tal_count(ver_chunks); i++) {
wire_max = tal_bytelen(ver_chunks[i]);
wire_ptr = ver_chunks[i];
fromwire_bip32_key_version(&wire_ptr, &wire_max, &version);
if (wire_ptr) {
wire_buff = tal_arr(NULL, uint8_t, 4);
towire_bip32_key_version(&wire_buff, &version);
tal_free(wire_buff);
}
}
tal_free(ver_chunks);
}