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rust-bitcoin-unsafe-fast
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fuzz: add more coverage for `deserialize_psbt`

This commit is contained in:
Bruno Garcia 2024-06-06 11:45:41 -03:00
parent 160f6de4b6
commit 55cbae9c2f
1 changed files with 25 additions and 2 deletions
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27
fuzz/fuzz_targets/bitcoin/deserialize_psbt.rs
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@ -1,14 +1,37 @@
use honggfuzz::fuzz;
fn consume_random_bytes<'a>(data: &mut &'a [u8]) -> &'a [u8] {
if data.is_empty() {
return &[];
}
let length = (data[0] as usize) % (data.len() + 1);
let (bytes, rest) = data.split_at(length);
*data = rest;
bytes
}
fn do_test(data: &[u8]) {
let psbt: Result<bitcoin::psbt::Psbt, _> = bitcoin::psbt::Psbt::deserialize(data);
let mut new_data = data;
let bytes = consume_random_bytes(&mut new_data);
let psbt: Result<bitcoin::psbt::Psbt, _> = bitcoin::psbt::Psbt::deserialize(bytes);
match psbt {
Err(_) => {}
Ok(psbt) => {
Ok(mut psbt) => {
let ser = bitcoin::psbt::Psbt::serialize(&psbt);
let deser = bitcoin::psbt::Psbt::deserialize(&ser).unwrap();
// Since the fuzz data could order psbt fields differently, we compare to our deser/ser instead of data
assert_eq!(ser, bitcoin::psbt::Psbt::serialize(&deser));
let new_bytes = consume_random_bytes(&mut new_data);
let psbt_b: Result<bitcoin::psbt::Psbt, _> = bitcoin::psbt::Psbt::deserialize(new_bytes);
match psbt_b {
Err(_) => {},
Ok(mut psbt_b) => {
assert_eq!(psbt_b.combine(psbt.clone()).is_ok(), psbt.combine(psbt_b).is_ok());
}
}
}
}
}