Support ERC/CW2981 in pointer contracts (sei-protocol#1669)

* Support ERC/CW2981 in pointer contracts

* integration tests

contracts/src/CW721ERC721Pointer.sol

@@ -1,14 +1,16 @@
 // SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
+import "@openzeppelin/contracts/token/common/ERC2981.sol";
 import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
 import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
 import "@openzeppelin/contracts/utils/Strings.sol";
+import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
 import {IWasmd} from "./precompiles/IWasmd.sol";
 import {IJson} from "./precompiles/IJson.sol";
 import {IAddr} from "./precompiles/IAddr.sol";
 
-contract CW721ERC721Pointer is ERC721 {
+contract CW721ERC721Pointer is ERC721,ERC2981 {
 
     address constant WASMD_PRECOMPILE_ADDRESS = 0x0000000000000000000000000000000000001002;
     address constant JSON_PRECOMPILE_ADDRESS = 0x0000000000000000000000000000000000001003;
@@ -26,6 +28,14 @@ contract CW721ERC721Pointer is ERC721 {
         Cw721Address = Cw721Address_;
     }
 
+    function supportsInterface(bytes4 interfaceId) public pure override(ERC721, ERC2981) returns (bool) {
+        return
+            interfaceId == type(IERC2981).interfaceId ||
+            interfaceId == type(IERC165).interfaceId ||
+            interfaceId == type(IERC721).interfaceId ||
+            interfaceId == type(IERC721Metadata).interfaceId;
+    }
+
     // Queries
     function balanceOf(address owner) public view override returns (uint256) {
         if (owner == address(0)) {
@@ -82,6 +92,26 @@ contract CW721ERC721Pointer is ERC721 {
         return string(uri);
     }
 
+    // 2981
+    function royaltyInfo(uint256 tokenId, uint256 salePrice) public view override returns (address, uint256) {
+        bytes memory checkRoyaltyResponse = WasmdPrecompile.query(Cw721Address, bytes("{\"extension\":{\"msg\":{\"check_royalties\":{}}}}"));
+        bytes memory isRoyaltyImplemented = JsonPrecompile.extractAsBytes(checkRoyaltyResponse, "royalty_payments");
+        if (keccak256(isRoyaltyImplemented) != keccak256("true")) {
+            revert("royalty info not implemented on the underlying CosmWasm contract");
+        }
+        string memory tId = _formatPayload("token_id", _doubleQuotes(Strings.toString(tokenId)));
+        string memory sPrice = _formatPayload("sale_price", _doubleQuotes(Strings.toString(salePrice)));
+        string memory req = _curlyBrace(_formatPayload("royalty_info", _curlyBrace(_join(tId, sPrice, ","))));
+        string memory fullReq = _curlyBrace(_formatPayload("extension", _curlyBrace(_formatPayload("msg", req))));
+        bytes memory response = WasmdPrecompile.query(Cw721Address, bytes(fullReq));
+        bytes memory addr = JsonPrecompile.extractAsBytes(response, "address");
+        uint256 amt = JsonPrecompile.extractAsUint256(response, "royalty_amount");
+        if (addr.length == 0) {
+            return (address(0), amt);
+        }
+        return (AddrPrecompile.getEvmAddr(string(addr)), amt);
+    }
+
     // Transactions
     function transferFrom(address from, address to, uint256 tokenId) public override {
         if (to == address(0)) {

example/contracts/README

@@ -11,7 +11,7 @@ make devtools
 
 # Compile sol
 solc --bin -o example/contracts/simplestorage example/contracts/simplestorage/SimpleStorage.sol
-solc @openzeppelin=contracts/lib/openzeppelin-contracts --bin -o x/evm/artifacts contracts/src/CW721ERC721Wrapper.sol
+solc @openzeppelin=contracts/lib/openzeppelin-contracts --bin -o x/evm/artifacts/cw721 contracts/src/CW721ERC721Pointer.sol
 
 # Generate ABI in Go
 solc --abi -o example/contracts/simplestorage example/contracts/simplestorage/SimpleStorage.sol

example/contracts/erc2981/ERC2981Example.abi

@@ -0,0 +1 @@
+[{"inputs":[{"internalType":"string","name":"name_","type":"string"},{"internalType":"string","name":"symbol_","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"numerator","type":"uint256"},{"internalType":"uint256","name":"denominator","type":"uint256"}],"name":"ERC2981InvalidDefaultRoyalty","type":"error"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"ERC2981InvalidDefaultRoyaltyReceiver","type":"error"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"numerator","type":"uint256"},{"internalType":"uint256","name":"denominator","type":"uint256"}],"name":"ERC2981InvalidTokenRoyalty","type":"error"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"address","name":"receiver","type":"address"}],"name":"ERC2981InvalidTokenRoyaltyReceiver","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"address","name":"owner","type":"address"}],"name":"ERC721IncorrectOwner","type":"error"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ERC721InsufficientApproval","type":"error"},{"inputs":[{"internalType":"address","name":"approver","type":"address"}],"name":"ERC721InvalidApprover","type":"error"},{"inputs":[{"internalType":"address","name":"operator","type":"address"}],"name":"ERC721InvalidOperator","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"ERC721InvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"ERC721InvalidReceiver","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"name":"ERC721InvalidSender","type":"error"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ERC721NonexistentToken","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"salePrice","type":"uint256"}],"name":"royaltyInfo","outputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"setDefaultRoyalty","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"}]

example/contracts/erc2981/ERC2981Example.sol

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import "@openzeppelin/contracts/token/common/ERC2981.sol";
+import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
+import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
+import "@openzeppelin/contracts/utils/Strings.sol";
+import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol";
+
+contract ERC2981Example is ERC721,ERC2981 {
+    constructor(string memory name_, string memory symbol_) ERC721(name_, symbol_) {
+    }
+
+    function supportsInterface(bytes4 interfaceId) public pure override(ERC721, ERC2981) returns (bool) {
+        return
+            interfaceId == type(IERC2981).interfaceId ||
+            interfaceId == type(IERC165).interfaceId ||
+            interfaceId == type(IERC721).interfaceId ||
+            interfaceId == type(IERC721Metadata).interfaceId;
+    }
+
+    function setDefaultRoyalty(address receiver) public {
+        _setDefaultRoyalty(receiver, 10000);
+    }
+}