Reexport the functions under old names.

The previous version of the crate also contained exported symbols as a
part of invisible, but used public API. At least bitcoinconsensus was
using these symbols. This change reexports them under the old names, so
they can still be used.

See rust-bitcoin#209

src/lib.rs

@@ -158,6 +158,7 @@ pub mod ffi;
 pub mod key;
 #[cfg(feature = "recovery")]
 pub mod recovery;
+mod reexport;
 
 pub use key::SecretKey;
 pub use key::PublicKey;

src/reexport.rs

@@ -0,0 +1,129 @@
+use types::*;
+use secp256k1_sys::{Context, PublicKey, Signature, EcdhHashFn, NonceFn};
+use ffi::SharedSecret;
+
+macro_rules! reexport {
+    ($(fn $fun:ident($($arg:ident: $arg_type:ty),* $(,)?) $(-> $ret:ty)?;)*) => {
+        $(
+            #[no_mangle]
+            pub unsafe extern "C" fn $fun($($arg: $arg_type),*) $(-> $ret)? {
+                ::ffi::$fun($($arg),*)
+            }
+        )*
+    };
+}
+
+reexport!{
+    fn secp256k1_context_create(flags: c_uint) -> *mut Context;
+
+    fn secp256k1_context_destroy(ctx: *mut Context);
+
+    fn secp256k1_context_preallocated_size(flags: c_uint) -> usize;
+
+    fn secp256k1_context_preallocated_create(prealloc: *mut c_void, flags: c_uint) -> *mut Context;
+
+    fn secp256k1_context_preallocated_destroy(cx: *mut Context);
+
+    fn secp256k1_context_preallocated_clone_size(cx: *const Context) -> usize;
+
+    fn secp256k1_context_preallocated_clone(cx: *const Context, prealloc: *mut c_void) -> *mut Context;
+
+    fn secp256k1_context_randomize(cx: *mut Context,
+                                       seed32: *const c_uchar)
+                                       -> c_int;
+
+    // Pubkeys
+    fn secp256k1_ec_pubkey_parse(cx: *const Context, pk: *mut PublicKey,
+                                     input: *const c_uchar, in_len: usize)
+                                     -> c_int;
+
+    fn secp256k1_ec_pubkey_serialize(cx: *const Context, output: *mut c_uchar,
+                                         out_len: *mut usize, pk: *const PublicKey,
+                                         compressed: c_uint)
+                                         -> c_int;
+
+    // Signatures
+    fn secp256k1_ecdsa_signature_parse_der(cx: *const Context, sig: *mut Signature,
+                                               input: *const c_uchar, in_len: usize)
+                                               -> c_int;
+
+    fn secp256k1_ecdsa_signature_parse_compact(cx: *const Context, sig: *mut Signature,
+                                                   input64: *const c_uchar)
+                                                   -> c_int;
+
+    fn ecdsa_signature_parse_der_lax(cx: *const Context, sig: *mut Signature,
+                                         input: *const c_uchar, in_len: usize)
+                                         -> c_int;
+
+    fn secp256k1_ecdsa_signature_serialize_der(cx: *const Context, output: *mut c_uchar,
+                                                   out_len: *mut usize, sig: *const Signature)
+                                                   -> c_int;
+
+    fn secp256k1_ecdsa_signature_serialize_compact(cx: *const Context, output64: *mut c_uchar,
+                                                       sig: *const Signature)
+                                                       -> c_int;
+
+    fn secp256k1_ecdsa_signature_normalize(cx: *const Context, out_sig: *mut Signature,
+                                               in_sig: *const Signature)
+                                               -> c_int;
+
+    // ECDSA
+    fn secp256k1_ecdsa_verify(cx: *const Context,
+                                  sig: *const Signature,
+                                  msg32: *const c_uchar,
+                                  pk: *const PublicKey)
+                                  -> c_int;
+
+    fn secp256k1_ecdsa_sign(cx: *const Context,
+                                sig: *mut Signature,
+                                msg32: *const c_uchar,
+                                sk: *const c_uchar,
+                                noncefn: NonceFn,
+                                noncedata: *const c_void)
+                                -> c_int;
+
+    // EC
+    fn secp256k1_ec_seckey_verify(cx: *const Context,
+                                      sk: *const c_uchar) -> c_int;
+
+    fn secp256k1_ec_pubkey_create(cx: *const Context, pk: *mut PublicKey,
+                                      sk: *const c_uchar) -> c_int;
+
+//TODO secp256k1_ec_privkey_export
+//TODO secp256k1_ec_privkey_import
+
+    fn secp256k1_ec_privkey_tweak_add(cx: *const Context,
+                                          sk: *mut c_uchar,
+                                          tweak: *const c_uchar)
+                                          -> c_int;
+
+    fn secp256k1_ec_pubkey_tweak_add(cx: *const Context,
+                                         pk: *mut PublicKey,
+                                         tweak: *const c_uchar)
+                                         -> c_int;
+
+    fn secp256k1_ec_privkey_tweak_mul(cx: *const Context,
+                                          sk: *mut c_uchar,
+                                          tweak: *const c_uchar)
+                                          -> c_int;
+
+    fn secp256k1_ec_pubkey_tweak_mul(cx: *const Context,
+                                         pk: *mut PublicKey,
+                                         tweak: *const c_uchar)
+                                         -> c_int;
+
+    fn secp256k1_ec_pubkey_combine(cx: *const Context,
+                                       out: *mut PublicKey,
+                                       ins: *const *const PublicKey,
+                                       n: c_int)
+                                       -> c_int;
+
+    fn secp256k1_ecdh(
+        cx: *const Context,
+        output: *mut c_uchar,
+        pubkey: *const PublicKey,
+        privkey: *const c_uchar,
+        hashfp: EcdhHashFn,
+        data: *mut c_void,
+    ) -> c_int;
+}