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

78 lines
2.0 KiB
Rust

use std::str::FromStr;
use bitcoin::blockdata::transaction::OutPoint;
use bitcoin::consensus::encode;
use honggfuzz::fuzz;
fn do_test(data: &[u8]) {
let lowercase: Vec<u8> = data
.iter()
.map(|c| match *c {
b'A' => b'a',
b'B' => b'b',
b'C' => b'c',
b'D' => b'd',
b'E' => b'e',
b'F' => b'f',
x => x,
})
.collect();
let data_str = match String::from_utf8(lowercase) {
Err(_) => return,
Ok(s) => s,
};
match OutPoint::from_str(&data_str) {
Ok(op) => {
assert_eq!(op.to_string().as_bytes(), data_str.as_bytes());
}
Err(_) => {
// If we can't deserialize as a string, try consensus deserializing
let res: Result<OutPoint, _> = encode::deserialize(data);
if let Ok(deser) = res {
let ser = encode::serialize(&deser);
assert_eq!(ser, data);
let string = deser.to_string();
match OutPoint::from_str(&string) {
Ok(destring) => assert_eq!(destring, deser),
Err(_) => panic!(),
}
}
}
}
}
fn main() {
loop {
fuzz!(|data| {
do_test(data);
});
}
}
#[cfg(all(test, fuzzing))]
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 {
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',
_ => 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("00", &mut a);
super::do_test(&a);
}
}