rust-bitcoin-unsafe-fast/fuzz/fuzz_targets/bitcoin/deserialize_amount.rs

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use honggfuzz::fuzz;
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use std::str::FromStr;
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fn do_test(data: &[u8]) {
let data_str = String::from_utf8_lossy(data);
// signed
let samt = match bitcoin::amount::SignedAmount::from_str(&data_str) {
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Ok(amt) => amt,
Err(_) => return,
};
let samt_roundtrip = match bitcoin::amount::SignedAmount::from_str(&samt.to_string()) {
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Ok(amt) => amt,
Err(_) => return,
};
assert_eq!(samt, samt_roundtrip);
// unsigned
let amt = match bitcoin::amount::Amount::from_str(&data_str) {
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Ok(amt) => amt,
Err(_) => return,
};
let amt_roundtrip = match bitcoin::amount::Amount::from_str(&amt.to_string()) {
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Ok(amt) => amt,
Err(_) => return,
};
assert_eq!(amt, amt_roundtrip);
}
fn main() {
loop {
fuzz!(|data| {
do_test(data);
});
}
}
#[cfg(test)]
mod tests {
fn extend_vec_from_hex(hex: &str, out: &mut Vec<u8>) {
let mut b = 0;
for (idx, c) in hex.as_bytes().iter().enumerate() {
b <<= 4;
match *c {
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b'A'..=b'F' => b |= c - b'A' + 10,
b'a'..=b'f' => b |= c - b'a' + 10,
b'0'..=b'9' => b |= c - b'0',
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_ => panic!("Bad hex"),
}
if (idx & 1) == 1 {
out.push(b);
b = 0;
}
}
}
#[test]
fn duplicate_crash() {
let mut a = Vec::new();
extend_vec_from_hex("00000000", &mut a);
super::do_test(&a);
}
}