From 4997d0df5beb4f730d38f1eeece5ffd52ad8718c Mon Sep 17 00:00:00 2001 From: Matt Morehouse Date: Mon, 21 Aug 2023 15:56:56 -0500 Subject: [PATCH] fuzz: target for reply_channel_range Fuzz the decoding and encoding of reply_channel_range. --- tests/fuzz/fuzz-wire-reply_channel_range.c | 78 ++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 tests/fuzz/fuzz-wire-reply_channel_range.c diff --git a/tests/fuzz/fuzz-wire-reply_channel_range.c b/tests/fuzz/fuzz-wire-reply_channel_range.c new file mode 100644 index 000000000..cc9310951 --- /dev/null +++ b/tests/fuzz/fuzz-wire-reply_channel_range.c @@ -0,0 +1,78 @@ +#include "config.h" +#include +#include +#include +#include +#include +#include + +struct reply_channel_range { + struct bitcoin_blkid chain_hash; + u32 first_blocknum; + u32 number_of_blocks; + u8 sync_complete; + u8 *encoded_short_ids; + struct tlv_reply_channel_range_tlvs *tlvs; +}; + +static void *encode(const tal_t *ctx, const struct reply_channel_range *s) +{ + return towire_reply_channel_range( + ctx, &s->chain_hash, s->first_blocknum, s->number_of_blocks, + s->sync_complete, s->encoded_short_ids, s->tlvs); +} + +static struct reply_channel_range *decode(const tal_t *ctx, const void *p) +{ + struct reply_channel_range *s = tal(ctx, struct reply_channel_range); + + if (fromwire_reply_channel_range( + s, p, &s->chain_hash, &s->first_blocknum, &s->number_of_blocks, + &s->sync_complete, &s->encoded_short_ids, &s->tlvs)) + return s; + return tal_free(s); +} + +static bool timestamps_tlv_equal( + const struct tlv_reply_channel_range_tlvs_timestamps_tlv *x, + const struct tlv_reply_channel_range_tlvs_timestamps_tlv *y) +{ + if (!x && !y) + return true; + if (!x || !y) + return false; + if (x->encoding_type != y->encoding_type) + return false; + return memeq(x->encoded_timestamps, tal_bytelen(x->encoded_timestamps), + y->encoded_timestamps, tal_bytelen(y->encoded_timestamps)); +} + +static bool equal(const struct reply_channel_range *x, + const struct reply_channel_range *y) +{ + size_t upto_sync_complete = (uintptr_t)&x->sync_complete - (uintptr_t)x; + if (memcmp(x, y, upto_sync_complete) != 0) + return false; + if (x->sync_complete != y->sync_complete) + return false; + + if (!memeq(x->encoded_short_ids, tal_bytelen(x->encoded_short_ids), + y->encoded_short_ids, tal_bytelen(y->encoded_short_ids))) + return false; + + assert(x->tlvs && y->tlvs); + + if (!timestamps_tlv_equal(x->tlvs->timestamps_tlv, + y->tlvs->timestamps_tlv)) + return false; + + return memeq( + x->tlvs->checksums_tlv, tal_bytelen(x->tlvs->checksums_tlv), + y->tlvs->checksums_tlv, tal_bytelen(y->tlvs->checksums_tlv)); +} + +void run(const u8 *data, size_t size) +{ + test_decode_encode(data, size, WIRE_REPLY_CHANNEL_RANGE, + struct reply_channel_range); +}