feat: stark tx auth (#477)

* feat: stark tx authenticator

* chore: test stark tx auth

* chore: removed double underscore

---------

Co-authored-by: Orlando <orlando@snapshot.org>

starknet/src/authenticators.cairo

@@ -3,3 +3,5 @@ mod vanilla;
 mod eth_tx;
 
 mod eth_sig;
+
+mod stark_tx;

starknet/src/authenticators/stark_tx.cairo

@@ -0,0 +1,108 @@
+use starknet::{ContractAddress};
+use sx::types::{Strategy, IndexedStrategy, Choice};
+
+#[starknet::interface]
+trait IStarkTxAuthenticator<TContractState> {
+    fn authenticate_propose(
+        ref self: TContractState,
+        space: ContractAddress,
+        author: ContractAddress,
+        execution_strategy: Strategy,
+        user_proposal_validation_params: Array<felt252>,
+        metadata_URI: Array<felt252>
+    );
+    fn authenticate_vote(
+        ref self: TContractState,
+        space: ContractAddress,
+        voter: ContractAddress,
+        proposal_id: u256,
+        choice: Choice,
+        user_voting_strategies: Array<IndexedStrategy>,
+        metadata_URI: Array<felt252>
+    );
+    fn authenticate_update_proposal(
+        ref self: TContractState,
+        space: ContractAddress,
+        author: ContractAddress,
+        proposal_id: u256,
+        execution_strategy: Strategy,
+        metadata_URI: Array<felt252>
+    );
+}
+
+#[starknet::contract]
+mod StarkTxAuthenticator {
+    use super::IStarkTxAuthenticator;
+    use starknet::{ContractAddress, info};
+    use core::array::ArrayTrait;
+    use sx::space::space::{ISpaceDispatcher, ISpaceDispatcherTrait};
+    use sx::types::{UserAddress, Strategy, IndexedStrategy, Choice};
+
+    #[storage]
+    struct Storage {}
+
+    #[external(v0)]
+    impl StarkTxAuthenticator of IStarkTxAuthenticator<ContractState> {
+        fn authenticate_propose(
+            ref self: ContractState,
+            space: ContractAddress,
+            author: ContractAddress,
+            execution_strategy: Strategy,
+            user_proposal_validation_params: Array<felt252>,
+            metadata_URI: Array<felt252>
+        ) {
+            assert(info::get_caller_address() == author, 'Invalid Caller');
+
+            ISpaceDispatcher {
+                contract_address: space
+            }
+                .propose(
+                    UserAddress::Starknet(author),
+                    execution_strategy,
+                    user_proposal_validation_params,
+                    metadata_URI
+                );
+        }
+
+        fn authenticate_vote(
+            ref self: ContractState,
+            space: ContractAddress,
+            voter: ContractAddress,
+            proposal_id: u256,
+            choice: Choice,
+            user_voting_strategies: Array<IndexedStrategy>,
+            metadata_URI: Array<felt252>
+        ) {
+            assert(info::get_caller_address() == voter, 'Invalid Caller');
+
+            ISpaceDispatcher {
+                contract_address: space
+            }
+                .vote(
+                    UserAddress::Starknet(voter),
+                    proposal_id,
+                    choice,
+                    user_voting_strategies,
+                    metadata_URI
+                );
+        }
+
+        fn authenticate_update_proposal(
+            ref self: ContractState,
+            space: ContractAddress,
+            author: ContractAddress,
+            proposal_id: u256,
+            execution_strategy: Strategy,
+            metadata_URI: Array<felt252>
+        ) {
+            assert(info::get_caller_address() == author, 'Invalid Caller');
+
+            ISpaceDispatcher {
+                contract_address: space
+            }
+                .update_proposal(
+                    UserAddress::Starknet(author), proposal_id, execution_strategy, metadata_URI
+                );
+        }
+    }
+}

starknet/src/tests.cairo

@@ -2,6 +2,7 @@ mod test_merkle_whitelist;
 mod test_factory;
 mod test_space;
 mod test_upgrade;
+mod test_stark_tx_auth;
 
 mod mocks;
 mod setup;