srb_trfc/
aplk_exec.rs

1use core::panic;
2
3use soroban_sdk::{contractclient, Address, Bytes, Env, String};
4
5use crate::aplk_gw::AxelarGatewayClient;
6
7/// Interface for an Axelar Executable app.
8#[contractclient(name = "AxelarExecutableClient")]
9pub trait AxelarExecutableInterface {
10    /// Return the trusted gateway contract id.
11    fn gateway(env: &Env) -> Address;
12
13    /// Execute a cross-chain contract call with the given payload. This function must validate that the contract call is received from the trusted gateway.
14    fn execute(
15        env: Env,
16        source_chain: String,
17        message_id: String,
18        source_address: String,
19        payload: Bytes,
20    );
21
22    /// Validate if a gateway has approved a contract call.
23    /// This should be called from an implementation of `execute` before executing custom app logic.
24    /// This method doesn't get exposed from the contract, as Soroban SDK's contractimpl macro ignores default trait methods.
25    fn validate(
26        env: Env,
27        source_chain: String,
28        message_id: String,
29        source_address: String,
30        payload: Bytes,
31    ) {
32        let gateway = AxelarGatewayClient::new(&env, &Self::gateway(&env));
33
34        // Validate the contract call was approved by the gateway
35        if !gateway.validate_message(
36            &env.current_contract_address(),
37            &source_chain,
38            &message_id,
39            &source_address,
40            &env.crypto().keccak256(&payload).into(),
41        ) {
42            panic!("not approved");
43        };
44    }
45}
srb_trfc/aplk_exec.rs

srb_trfc/
aplk_exec.rs
