81 lines
2.5 KiB
Rust
81 lines
2.5 KiB
Rust
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use honggfuzz::fuzz;
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use bitcoin::address::Address;
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use bitcoin::network::constants::Network;
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use bitcoin::blockdata::script;
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use bitcoin::consensus::encode;
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fn do_test(data: &[u8]) {
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let s: Result<script::ScriptBuf, _> = encode::deserialize(data);
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if let Ok(script) = s {
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let _: Result<Vec<script::Instruction>, script::Error> = script.instructions().collect();
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let mut b = script::Builder::new();
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for ins in script.instructions_minimal() {
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if ins.is_err() {
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return;
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}
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match ins.ok().unwrap() {
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script::Instruction::Op(op) => { b = b.push_opcode(op); }
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script::Instruction::PushBytes(bytes) => {
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// Any one-byte pushes, except -0, which can be interpreted as numbers, should be
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// reserialized as numbers. (For -1 through 16, this will use special ops; for
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// others it'll just reserialize them as pushes.)
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if bytes.len() == 1 && bytes[0] != 0x80 && bytes[0] != 0x00 {
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if let Ok(num) = script::read_scriptint(bytes.as_bytes()) {
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b = b.push_int(num);
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} else {
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b = b.push_slice(bytes);
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}
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} else {
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b = b.push_slice(bytes);
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}
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}
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}
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}
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assert_eq!(b.into_script(), script);
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assert_eq!(data, &encode::serialize(&script)[..]);
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// Check if valid address and if that address roundtrips.
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if let Ok(addr) = Address::from_script(&script, Network::Bitcoin) {
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assert_eq!(addr.script_pubkey(), script);
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}
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}
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}
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fn main() {
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loop {
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fuzz!(|data| {
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do_test(data);
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});
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}
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}
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#[cfg(test)]
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mod tests {
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fn extend_vec_from_hex(hex: &str, out: &mut Vec<u8>) {
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let mut b = 0;
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for (idx, c) in hex.as_bytes().iter().enumerate() {
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b <<= 4;
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match *c {
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b'A'..=b'F' => b |= c - b'A' + 10,
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b'a'..=b'f' => b |= c - b'a' + 10,
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b'0'..=b'9' => b |= c - b'0',
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_ => panic!("Bad hex"),
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}
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if (idx & 1) == 1 {
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out.push(b);
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b = 0;
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}
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}
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}
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#[test]
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fn duplicate_crash() {
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let mut a = Vec::new();
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extend_vec_from_hex("00", &mut a);
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super::do_test(&a);
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}
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}
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