feat(sealevel): sealevel token program fee support [IGNORE FOR NOW]

rust/sealevel/Cargo.toml

@@ -10,9 +10,12 @@ members = [
     "libraries/interchain-security-module-interface",
     "libraries/message-recipient-interface",
     "libraries/multisig-ism",
+    "libraries/package-versioned",
+    "libraries/quote-verifier",
     "libraries/serializable-account-meta",
     "libraries/test-transaction-utils",
     "libraries/test-utils",
+    "programs/hyperlane-sealevel-fee",
     "programs/hyperlane-sealevel-igp",
     "programs/hyperlane-sealevel-igp-test",
     "programs/hyperlane-sealevel-token",
@@ -183,9 +186,15 @@ overflow-checks = true
 [profile.release.package.multisig-ism]
 overflow-checks = true
 
+[profile.release.package.package-versioned]
+overflow-checks = true
+
 [profile.release.package.serializable-account-meta]
 overflow-checks = true
 
+[profile.release.package.quote-verifier]
+overflow-checks = true
+
 [profile.release.package.hyperlane-test-transaction-utils]
 overflow-checks = true
 
@@ -195,6 +204,9 @@ overflow-checks = true
 [profile.release.package.hyperlane-sealevel-mailbox]
 overflow-checks = true
 
+[profile.release.package.hyperlane-sealevel-fee]
+overflow-checks = true
+
 [profile.release.package.hyperlane-sealevel-igp]
 overflow-checks = true
 

rust/sealevel/libraries/package-versioned/Cargo.toml

@@ -0,0 +1,14 @@
+cargo-features = ["workspace-inheritance"]
+
+[package]
+name = "package-versioned"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+borsh.workspace = true
+serializable-account-meta = { path = "../serializable-account-meta" }
+solana-program.workspace = true
+
+[lib]
+crate-type = ["cdylib", "lib"]

rust/sealevel/libraries/package-versioned/src/lib.rs

@@ -0,0 +1,43 @@
+use serializable_account_meta::SimulationReturnData;
+use solana_program::{program::set_return_data, program_error::ProgramError};
+
+/// Single source of truth for all Hyperlane SVM program versions.
+/// Compiled into each program's binary — atomic on upgrade, no migration step.
+pub const PACKAGE_VERSION: &str = "1.0.0";
+
+/// Trait for programs that expose their version.
+/// Programs implement with empty impl block to get the default.
+pub trait PackageVersioned {
+    fn package_version() -> &'static str {
+        PACKAGE_VERSION
+    }
+}
+
+/// 8-byte discriminator for the `GetProgramVersion` instruction.
+/// First 8 bytes of `sha256(b"hyperlane:get-program-version")`.
+/// This is independent of any program's instruction enum, allowing
+/// universal version queries across all Hyperlane SVM programs.
+pub const GET_PROGRAM_VERSION_DISCRIMINATOR: [u8; 8] = [150, 230, 176, 162, 236, 96, 183, 171];
+
+/// Attempts to decode a `GetProgramVersion` instruction from raw instruction data.
+/// Returns true if the data matches the discriminator, false otherwise.
+pub fn is_get_program_version(instruction_data: &[u8]) -> bool {
+    instruction_data.len() == GET_PROGRAM_VERSION_DISCRIMINATOR.len()
+        && instruction_data == GET_PROGRAM_VERSION_DISCRIMINATOR
+}
+
+/// Builds the instruction data for a `GetProgramVersion` call.
+pub fn get_program_version_instruction_data() -> Vec<u8> {
+    GET_PROGRAM_VERSION_DISCRIMINATOR.to_vec()
+}
+
+/// Shared handler for the `GetProgramVersion` instruction.
+/// Writes the version string as return data wrapped in SimulationReturnData.
+pub fn process_get_program_version<T: PackageVersioned>() -> Result<(), ProgramError> {
+    let version = T::package_version();
+    set_return_data(
+        &borsh::to_vec(&SimulationReturnData::new(version.to_string()))
+            .map_err(|_| ProgramError::BorshIoError)?,
+    );
+    Ok(())
+}

rust/sealevel/libraries/quote-verifier/Cargo.toml

@@ -0,0 +1,26 @@
+cargo-features = ["workspace-inheritance"]
+
+[package]
+name = "quote-verifier"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+borsh.workspace = true
+ecdsa-signature = { path = "../ecdsa-signature" }
+hyperlane-core = { path = "../../../main/hyperlane-core" }
+solana-program.workspace = true
+thiserror.workspace = true
+# Required to allow dependencies `getrandom` but to preserve determinism required by programs, see
+# https://solana.com/news/rust-to-solana
+getrandom = { workspace = true, features = ["custom"] }
+
+[dev-dependencies]
+k256.workspace = true
+rand.workspace = true
+
+[lints]
+workspace = true
+
+[lib]
+crate-type = ["cdylib", "lib"]