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I didn't like my hair anyway...
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| #![no_std] | |
| use soroban_sdk::{ | |
| auth::{Context, CustomAccountInterface}, | |
| contract, contracterror, contractimpl, contracttype, | |
| crypto::Hash, | |
| token, | |
| xdr::ToXdr, | |
| Address, Bytes, BytesN, Env, TryIntoVal, Vec, | |
| }; | |
| #[contract] | |
| pub struct Contract; | |
| #[contracttype] | |
| #[derive(Clone, Debug)] | |
| pub struct Signature { | |
| pub address: Address, | |
| pub signature: BytesN<64>, | |
| } | |
| #[contracterror] | |
| #[derive(Copy, Clone, Eq, PartialEq, Debug)] | |
| #[repr(u32)] | |
| pub enum Error { | |
| TooBadSoSad = 1, | |
| } | |
| #[contractimpl] | |
| impl CustomAccountInterface for Contract { | |
| type Error = Error; | |
| type Signature = Signature; | |
| #[allow(non_snake_case)] | |
| fn __check_auth( | |
| env: Env, | |
| signature_payload: Hash<32>, | |
| signature: Signature, | |
| auth_contexts: Vec<Context>, | |
| ) -> Result<(), Error> { | |
| let address_bytes = signature.address.clone().to_xdr(&env); | |
| let address_bytes = address_bytes.slice(address_bytes.len() - 32..); | |
| let mut slice = [0u8; 32]; | |
| address_bytes.copy_into_slice(&mut slice); | |
| let public_key = BytesN::from_array(&env, &slice); | |
| env.crypto() | |
| .ed25519_verify(&public_key, &signature_payload.into(), &signature.signature); | |
| for context in auth_contexts.iter() { | |
| match context { | |
| Context::Contract(c) => { | |
| let mut seed = [0u8; 32]; | |
| let sac: Address = c.args.get(0).unwrap().try_into_val(&env).unwrap(); | |
| let amount: u32 = c.args.get(1).unwrap().try_into_val(&env).unwrap(); | |
| let token = token::TokenClient::new(&env, &sac); | |
| let balance = token.balance(&env.current_contract_address()); | |
| seed[..16].swap_with_slice(&mut balance.to_be_bytes()); | |
| env.prng().seed(Bytes::from_array(&env, &seed)); | |
| if env.prng().gen::<u64>() as u32 != amount { | |
| return Err(Error::TooBadSoSad); | |
| } | |
| token.transfer( | |
| &env.current_contract_address(), | |
| &signature.address, | |
| &10_000_000 | |
| ); | |
| } | |
| _ => {} | |
| } | |
| } | |
| Ok(()) | |
| } | |
| } |
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| # Asset Contract | |
| PUZZLE:GCUY5ECTBWZ5JGLXPPKSK4Y34RIMN2AEO4UNGQRRBF6AVVDSXSWLJLEN | |
| CDGOXJBEKI3MQDB3J477NN3HAQBDCNK5YYB2ZKAG24US53RXW44QIF6Z | |
| # Puzzle Contract | |
| CCPYY3EQZQ6SQE2XRHCU5VVH4DCR3ZCNRHIS5ITCSMBK2WOPMN56LEAV |
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