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authorJacob Evans <jacob@dekz.net>2018-07-06 13:00:09 +0800
committerJacob Evans <jacob@dekz.net>2018-07-06 13:30:07 +0800
commit0557d6a9bfc07b8d360970ffbcf582f8a26943cb (patch)
tree76b233a7a50c2e10ee3eb09a848c2494d0512c26 /packages/contracts/src/2.0.0/forwarder/MixinERC721.sol
parentb9b00e10d39c3c84bc72892ef37f1313e904414d (diff)
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Forwarding contract (squashed commits)
Diffstat (limited to 'packages/contracts/src/2.0.0/forwarder/MixinERC721.sol')
-rw-r--r--packages/contracts/src/2.0.0/forwarder/MixinERC721.sol64
1 files changed, 64 insertions, 0 deletions
diff --git a/packages/contracts/src/2.0.0/forwarder/MixinERC721.sol b/packages/contracts/src/2.0.0/forwarder/MixinERC721.sol
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+++ b/packages/contracts/src/2.0.0/forwarder/MixinERC721.sol
@@ -0,0 +1,64 @@
+/*
+
+ Copyright 2018 ZeroEx Intl.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+*/
+
+pragma solidity ^0.4.24;
+pragma experimental ABIEncoderV2;
+
+import "../utils/LibBytes/LibBytes.sol";
+import "../tokens/ERC721Token/IERC721Token.sol";
+
+contract MixinERC721 {
+
+ using LibBytes for bytes;
+ bytes4 constant ERC721_RECEIVED = bytes4(keccak256("onERC721Received(address,uint256,bytes)"));
+ bytes4 constant ERC721_RECEIVED_OPERATOR = bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"));
+
+ function onERC721Received(address, uint256, bytes memory)
+ public
+ pure
+ returns(bytes4)
+ {
+ return ERC721_RECEIVED;
+ }
+
+ function onERC721Received(address, address, uint256, bytes memory)
+ public
+ pure
+ returns(bytes4)
+ {
+ return ERC721_RECEIVED_OPERATOR;
+ }
+
+ function transferERC721Token(
+ bytes memory assetData,
+ address to
+ )
+ internal
+ {
+ // Decode asset data.
+ address token = assetData.readAddress(16);
+ uint256 tokenId = assetData.readUint256(36);
+ bytes memory receiverData = assetData.readBytesWithLength(100);
+ IERC721Token(token).safeTransferFrom(
+ address(this),
+ to,
+ tokenId,
+ receiverData
+ );
+ }
+}