ffi: Add glue for equality predicates.

2 files changed, 30 insertions, 0 deletions

diff --git a/ffi/include/sequoia/openpgp.h b/ffi/include/sequoia/openpgp.h
index 398ee67e..968e31a9 100644
--- a/ffi/include/sequoia/openpgp.h
+++ b/ffi/include/sequoia/openpgp.h
@@ -35,6 +35,11 @@ char *sq_keyid_to_string (const sq_keyid_t fp);
 /*/
 char *sq_keyid_to_hex (const sq_keyid_t fp);
 
+/*/
+/// Compares KeyIDs.
+/*/
+int sq_keyid_equal (const sq_keyid_t a, const sq_keyid_t b);
+
 
 /* sequoia::openpgp::Fingerprint.  */
 
@@ -73,6 +78,11 @@ char *sq_fingerprint_to_hex (const sq_fingerprint_t fp);
 /*/
 sq_keyid_t sq_fingerprint_to_keyid (const sq_fingerprint_t fp);
 
+/*/
+/// Compares Fingerprints.
+/*/
+int sq_fingerprint_equal (const sq_fingerprint_t a, const sq_fingerprint_t b);
+
 
 /* sequoia::keys.  */
 
diff --git a/ffi/src/openpgp.rs b/ffi/src/openpgp.rs
index 585c2a3c..2564b167 100644
--- a/ffi/src/openpgp.rs
+++ b/ffi/src/openpgp.rs
@@ -61,6 +61,16 @@ pub extern "system" fn sq_keyid_to_hex(id: Option<&KeyID>)
         .into_raw()
 }
 
+/// Compares KeyIDs.
+#[no_mangle]
+pub extern "system" fn sq_keyid_equal(a: Option<&KeyID>,
+                                      b: Option<&KeyID>)
+                                      -> bool {
+    let a = a.expect("KeyID 'a' is NULL");
+    let b = b.expect("KeyID 'b' is NULL");
+    a == b
+}
+
 
 /* sequoia::openpgp::Fingerprint.  */
 
@@ -124,6 +134,16 @@ pub extern "system" fn sq_fingerprint_to_keyid(fp: Option<&Fingerprint>)
     Box::into_raw(Box::new(fp.to_keyid()))
 }
 
+/// Compares Fingerprints.
+#[no_mangle]
+pub extern "system" fn sq_fingerprint_equal(a: Option<&Fingerprint>,
+                                            b: Option<&Fingerprint>)
+                                            -> bool {
+    let a = a.expect("Fingerprint 'a' is NULL");
+    let b = b.expect("Fingerprint 'b' is NULL");
+    a == b
+}
+
 
 /* sequoia::keys.  */