rust: infohash support == operator and from hex

rust/src/ffi.rs

@@ -44,6 +44,7 @@ pub struct Blob
 }
 
 #[repr(C)]
+#[derive(PartialEq)]
 pub struct InfoHash
 {
     pub d: [u8; HASH_LEN],
@@ -144,6 +145,7 @@ extern {
     pub fn dht_infohash_print(h: *const InfoHash) -> *const c_char;
     pub fn dht_infohash_random(h: *mut InfoHash);
     pub fn dht_infohash_get(h: *mut InfoHash, dat: *mut u8, dat_size: size_t);
+    pub fn dht_infohash_from_hex(h: *mut InfoHash, dat: *const c_char);
     pub fn dht_infohash_is_zero(j: *const InfoHash) -> bool;
 
     // dht::PkId

rust/src/infohash.rs

@@ -55,6 +55,15 @@ impl InfoHash {
         h
     }
 
+    pub fn from_hex(data: &str) -> InfoHash {
+        let mut h = InfoHash::new();
+        unsafe {
+            let c_str = CString::new(data).unwrap();
+            dht_infohash_from_hex(&mut h, c_str.as_ptr());
+        }
+        h
+    }
+
     pub fn is_zero(&self) -> bool {
         unsafe {
             dht_infohash_is_zero(self)

rust/src/value.rs

@@ -65,7 +65,7 @@ impl Value {
         }
     }
 
-    fn recipient(&self) -> InfoHash {
+    pub fn recipient(&self) -> InfoHash {
         unsafe {
             dht_value_get_recipient(self)
         }