X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning-invoice%2Ffuzz%2Ffuzz_targets%2Fserde_data_part.rs;fp=lightning-invoice%2Ffuzz%2Ffuzz_targets%2Fserde_data_part.rs;h=406f96764e9971ad97abc4f7dbdfb352e94cad35;hb=f00bb10a82c122102f712675e6e4523bb5678e2a;hp=0000000000000000000000000000000000000000;hpb=3d80d9833962b2e5f6414065e3bbaf6b6465c27a;p=rust-lightning

diff --git a/lightning-invoice/fuzz/fuzz_targets/serde_data_part.rs b/lightning-invoice/fuzz/fuzz_targets/serde_data_part.rs
new file mode 100644
index 00000000..406f9676
--- /dev/null
+++ b/lightning-invoice/fuzz/fuzz_targets/serde_data_part.rs
@@ -0,0 +1,69 @@
+extern crate lightning_invoice;
+extern crate bech32;
+
+use lightning_invoice::RawDataPart;
+use bech32::{FromBase32, ToBase32, u5};
+
+fn do_test(data: &[u8]) {
+    let bech32 = data.iter().map(|x| u5::try_from_u8(x % 32).unwrap()).collect::<Vec<_>>();
+    let invoice = match RawDataPart::from_base32(&bech32) {
+        Ok(invoice) => invoice,
+        Err(_) => return,
+    };
+
+    // Our encoding is not worse than the input
+    assert!(invoice.to_base32().len() <= bech32.len());
+
+    // Our serialization is loss-less
+    assert_eq!(
+        RawDataPart::from_base32(&invoice.to_base32()).expect("faild parsing out own encoding"),
+        invoice
+    );
+}
+
+#[cfg(feature = "afl")]
+#[macro_use] extern crate afl;
+#[cfg(feature = "afl")]
+fn main() {
+    fuzz!(|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().filter(|&&c| c != b'\n').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("000000", &mut a);
+        super::do_test(&a);
+    }
+}