rusk-abi: new ABIs owner_raw, self_owner_raw

rusk-abi/CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Memoize the `verify_proof` function [#1228]
+- New ABIs: `owner_raw`, `self_owner_raw` [#1710]
 
 ### Changed
 
@@ -198,6 +199,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add LICENSE
 - Add README.md
 
+[#1710]: https://github.com/dusk-network/rusk/issues/1710
 [#1609]: https://github.com/dusk-network/rusk/issues/1609
 [#1371]: https://github.com/dusk-network/rusk/issues/1371
 [#1228]: https://github.com/dusk-network/rusk/issues/1228

rusk-abi/src/abi.rs

@@ -4,6 +4,13 @@
 //
 // Copyright (c) DUSK NETWORK. All rights reserved.
 
+#[cfg(feature = "abi")]
+use dusk_bytes::Serializable;
+#[cfg(feature = "abi")]
+use phoenix_core::PublicKey;
+#[cfg(feature = "abi")]
+use rkyv::{archived_root, Deserialize, Infallible};
+
 pub use piecrust_uplink::*;
 
 /// Compute the blake2b hash of the given bytes, returning the resulting scalar.
@@ -70,3 +77,32 @@ pub fn payment_info(
 ) -> Result<crate::PaymentInfo, ContractError> {
     call(contract, "payment_info", &())
 }
+
+/// Query owner of a given contract.
+#[cfg(feature = "abi")]
+pub fn owner(contract: ContractId) -> Option<PublicKey> {
+    owner_raw(contract).map(|buf| {
+        let ret = unsafe { archived_root::<PublicKey>(buf.as_slice()) };
+        ret.deserialize(&mut Infallible).expect("Infallible")
+    })
+}
+
+/// Query owner of a given contract.
+#[cfg(feature = "abi")]
+pub fn self_owner() -> PublicKey {
+    let buf = self_owner_raw();
+    let ret = unsafe { archived_root::<PublicKey>(buf.as_slice()) };
+    ret.deserialize(&mut Infallible).expect("Infallible")
+}
+
+/// Query raw owner of a given contract.
+#[cfg(feature = "abi")]
+pub fn owner_raw(contract: ContractId) -> Option<[u8; PublicKey::SIZE]> {
+    piecrust_uplink::owner(contract)
+}
+
+/// Query raw self owner.
+#[cfg(feature = "abi")]
+pub fn self_owner_raw() -> [u8; PublicKey::SIZE] {
+    piecrust_uplink::self_owner()
+}

rusk-abi/tests/contracts/host_fn/src/lib.rs

@@ -69,7 +69,7 @@ impl HostFnTest {
     }
 
     pub fn owner(&self) -> [u8; PublicKey::SIZE] {
-        rusk_abi::self_owner()
+        rusk_abi::self_owner_raw()
     }
 }