Merge pull request #416 from TheBlueMatt/2019-12-fuzz-clib

[rust-lightning] / fuzz / src / chanmon_deser.rs

diff --git a/fuzz/src/chanmon_deser.rs b/fuzz/src/chanmon_deser.rs
new file mode 100644 (file)
index 0000000..5dde4a2
--- /dev/null
+++ b/fuzz/src/chanmon_deser.rs
@@ -0,0 +1,50 @@
+// This file is auto-generated by gen_target.sh based on msg_target_template.txt
+// To modify it, modify msg_target_template.txt and run gen_target.sh instead.
+
+use bitcoin_hashes::sha256d::Hash as Sha256dHash;
+
+use lightning::ln::channelmonitor;
+use lightning::util::ser::{ReadableArgs, Writer};
+
+use utils::test_logger;
+
+use std::io::Cursor;
+use std::sync::Arc;
+
+struct VecWriter(Vec<u8>);
+impl Writer for VecWriter {
+       fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
+               self.0.extend_from_slice(buf);
+               Ok(())
+       }
+       fn size_hint(&mut self, size: usize) {
+               self.0.reserve_exact(size);
+       }
+}
+
+#[inline]
+pub fn do_test(data: &[u8]) {
+       let logger = Arc::new(test_logger::TestLogger::new("".to_owned()));
+       if let Ok((latest_block_hash, monitor)) = <(Sha256dHash, channelmonitor::ChannelMonitor)>::read(&mut Cursor::new(data), logger.clone()) {
+               let mut w = VecWriter(Vec::new());
+               monitor.write_for_disk(&mut w).unwrap();
+               let deserialized_copy = <(Sha256dHash, channelmonitor::ChannelMonitor)>::read(&mut Cursor::new(&w.0), logger.clone()).unwrap();
+               assert!(latest_block_hash == deserialized_copy.0);
+               assert!(monitor == deserialized_copy.1);
+               w.0.clear();
+               monitor.write_for_watchtower(&mut w).unwrap();
+       }
+}
+
+#[no_mangle]
+pub extern "C" fn chanmon_deser_run(data: *const u8, datalen: usize) {
+       do_test(unsafe { std::slice::from_raw_parts(data, datalen) });
+}
+
+#[cfg(test)]
+mod tests {
+       #[test]
+       fn duplicate_crash() {
+               super::do_test(&::hex::decode("00").unwrap());
+       }
+}