Support for allowlist proof

src/AuctionHouse.sol

@@ -42,6 +42,7 @@ abstract contract Router is FeeManager {
     /// @param      approvalNonce       Nonce for permit approval signature
     /// @param      auctionData         Custom data used by the auction module
     /// @param      approvalSignature   Permit approval signature for the quoteToken
+    /// @param      allowlistProof      Proof of allowlist inclusion
     struct PurchaseParams {
         address recipient;
         address referrer;
@@ -52,6 +53,7 @@ abstract contract Router is FeeManager {
         uint256 approvalNonce;
         bytes auctionData;
         bytes approvalSignature;
+        bytes allowlistProof;
     }
 
     // ========== STATE VARIABLES ========== //
@@ -235,7 +237,7 @@ contract AuctionHouse is Derivatizer, Auctioneer, Router {
 
         // Check if the purchaser is on the allowlist
         if (address(routing.allowlist) != address(0)) {
-            if (!routing.allowlist.isAllowed(params_.lotId, msg.sender, bytes(""))) {
+            if (!routing.allowlist.isAllowed(params_.lotId, msg.sender, params_.allowlistProof)) {
                 revert NotAuthorized();
             }
         }

test/AuctionHouse/purchase.t.sol

@@ -73,6 +73,7 @@ contract PurchaseTest is Test, Permit2User {
     bytes internal approvalSignature;
     uint48 internal approvalDeadline;
     uint256 internal derivativeTokenId;
+    bytes internal allowlistProof;
 
     function setUp() external {
         aliceKey = _getRandomUint256();
@@ -142,7 +143,8 @@ contract PurchaseTest is Test, Permit2User {
             minAmountOut: AMOUNT_OUT,
             approvalNonce: approvalNonce,
             auctionData: bytes(""),
-            approvalSignature: approvalSignature
+            approvalSignature: approvalSignature,
+            allowlistProof: allowlistProof
         });
     }
 
@@ -327,8 +329,6 @@ contract PurchaseTest is Test, Permit2User {
     //  [X] when the caller is on the allowlist
     //   [X] it succeeds
 
-    // TODO add support for allowlist proof
-
     modifier givenAuctionHasAllowlist() {
         // Register a new auction with an allowlist
         routingParams.allowlist = mockAllowlist;
@@ -345,8 +345,14 @@ contract PurchaseTest is Test, Permit2User {
         // Assumes the allowlist is set
         require(address(routingParams.allowlist) != address(0), "allowlist not set");
 
+        // Set the allowlist proof
+        allowlistProof = abi.encode("i am allowed");
+
         // Set the caller to be on the allowlist
-        mockAllowlist.setAllowed(alice, true);
+        mockAllowlist.setAllowedWithProof(alice, allowlistProof, true);
+
+        // Update the purchase params
+        purchaseParams.allowlistProof = allowlistProof;
         _;
     }
 

test/modules/Auction/MockAllowlist.sol

@@ -8,18 +8,21 @@ contract MockAllowlist is IAllowlist {
 
     uint256[] public registeredIds;
 
-    mapping(address => bool) public allowed;
+    mapping(address => mapping(bytes => bool)) public allowedWithProof;
 
-    function isAllowed(address address_, bytes calldata) external view override returns (bool) {
-        return allowed[address_];
+    function isAllowed(
+        address address_,
+        bytes calldata proof_
+    ) external view override returns (bool) {
+        return allowedWithProof[address_][proof_];
     }
 
     function isAllowed(
         uint256,
         address address_,
-        bytes calldata
+        bytes calldata proof_
     ) external view override returns (bool) {
-        return allowed[address_];
+        return allowedWithProof[address_][proof_];
     }
 
     function register(bytes calldata) external override {}
@@ -40,7 +43,7 @@ contract MockAllowlist is IAllowlist {
         return registeredIds;
     }
 
-    function setAllowed(address account, bool allowed_) external {
-        allowed[account] = allowed_;
+    function setAllowedWithProof(address account, bytes calldata proof, bool allowed_) external {
+        allowedWithProof[account][proof] = allowed_;
     }
 }