pubkey_test.rs

extern crate lightning;
extern crate secp256k1;

use secp256k1::key::PublicKey;
use secp256k1::{Secp256k1};

use lightning::ln::msgs;
use lightning::util::reset_rng_state;

use std::sync::atomic::{AtomicUsize,Ordering};
use lightning::ln::msgs::{MsgEncodable, MsgDecodable};

#[inline]
pub fn slice_to_be16(v: &[u8]) -> u16 {
    ((v[0] as u16) << 8*1) |
    ((v[1] as u16) << 8*0)
}

struct InputData<'a> {
    data: &'a [u8],
    read_pos: AtomicUsize,
}
impl<'a> InputData<'a> {
    fn get_slice(&self, len: usize) -> Option<&'a [u8]> {
        let old_pos = self.read_pos.fetch_add(len, Ordering::AcqRel);
        if self.data.len() < old_pos + len {
            return None;
        }
        Some(&self.data[old_pos..old_pos + len])
    }
}

#[inline]
pub fn do_test(data: &[u8]) {
    reset_rng_state();

    let input = InputData {
        data,
        read_pos: AtomicUsize::new(0),
    };

    macro_rules! get_slice {
        ($len: expr) => {
            match input.get_slice($len as usize) {
                Some(slice) => slice,
                None => return,
            }
        }
    }

    let secp_ctx = &Secp256k1::new();
    macro_rules! get_pubkey {
        ($s: expr) => {
            match PublicKey::from_slice(&secp_ctx, $s) {
                Ok(key) => key,
                Err(e) => return,
            }
        }
    }

    loop {
        let s = get_slice!(33);
        let key = get_pubkey!(s);
        let t = &key.serialize()[..];
        assert_eq!(s, t);
    }
}

#[cfg(feature = "afl")]
extern crate afl;
#[cfg(feature = "afl")]
fn main() {
    afl::read_stdio_bytes(|data| {
        do_test(&data);
    });
}

#[cfg(feature = "honggfuzz")]
#[macro_use] extern crate honggfuzz;
#[cfg(feature = "honggfuzz")]
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 {
                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);
    }
}