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Merge pull request #27 from gnosis/erc-6551
EIP-6551 compat
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| //SPDX-License-Identifier: LGPL-3.0 | ||
| pragma solidity ^0.8.12; | ||
|
|
||
| import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol"; | ||
| import "./base/ThresholdMech.sol"; | ||
| import "./libraries/MinimalProxyStore.sol"; | ||
|
|
||
| /** | ||
| * @dev A Mech that is operated by any holder of a defined set of minimum ERC1155 token balances | ||
| */ | ||
| contract ERC1155ThresholdMech is ThresholdMech { | ||
| function threshold() | ||
| public | ||
| view | ||
| returns ( | ||
| address token, | ||
| uint256[] memory tokenIds, | ||
| uint256[] memory minBalances, | ||
| uint256 minTotalBalance | ||
| ) | ||
| { | ||
| return | ||
| abi.decode( | ||
| MinimalProxyStore.getContext(address(this)), | ||
| (address, uint256[], uint256[], uint256) | ||
| ); | ||
| } | ||
|
|
||
| function isOperator(address signer) public view override returns (bool) { | ||
| ( | ||
| address token, | ||
| uint256[] memory tokenIds, | ||
| uint256[] memory minBalances, | ||
| uint256 minTotalBalance | ||
| ) = this.threshold(); | ||
|
|
||
| uint256 balanceSum = 0; | ||
| for (uint256 i = 0; i < tokenIds.length; i++) { | ||
| uint256 balance = IERC1155(token).balanceOf(signer, tokenIds[i]); | ||
| if (balance < minBalances[i]) { | ||
| return false; | ||
| } | ||
| balanceSum += balance; | ||
| } | ||
|
|
||
| return balanceSum >= minTotalBalance; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| //SPDX-License-Identifier: LGPL-3.0 | ||
| pragma solidity ^0.8.12; | ||
|
|
||
| import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol"; | ||
| import "./base/TokenboundMech.sol"; | ||
|
|
||
| /** | ||
| * @dev A Mech that is operated by the holder of a designated ERC1155 token | ||
| */ | ||
| contract ERC1155TokenboundMech is TokenboundMech { | ||
| function isOperator(address signer) public view override returns (bool) { | ||
| (uint256 chainId, address tokenContract, uint256 tokenId) = this | ||
| .token(); | ||
| if (chainId != block.chainid) return false; | ||
| return IERC1155(tokenContract).balanceOf(signer, tokenId) > 0; | ||
| } | ||
|
|
||
| function onERC1155Received( | ||
| address, | ||
| address from, | ||
| uint256 receivedTokenId, | ||
| uint256, | ||
| bytes calldata | ||
| ) external view override returns (bytes4) { | ||
| ( | ||
| uint256 chainId, | ||
| address boundTokenContract, | ||
| uint256 boundTokenId | ||
| ) = this.token(); | ||
|
|
||
| if ( | ||
| chainId == block.chainid && | ||
| msg.sender == boundTokenContract && | ||
| receivedTokenId == boundTokenId | ||
| ) { | ||
| // We block the transfer only if the sender has no balance left after the transfer. | ||
| // Note: ERC-1155 prescribes that balances are updated BEFORE the call to onERC1155Received. | ||
| if ( | ||
| IERC1155(boundTokenContract).balanceOf(from, boundTokenId) == 0 | ||
| ) { | ||
| revert OwnershipCycle(); | ||
| } | ||
| } | ||
|
|
||
| return 0xf23a6e61; | ||
| } | ||
|
|
||
| function onERC1155BatchReceived( | ||
| address, | ||
| address from, | ||
| uint256[] calldata ids, | ||
| uint256[] calldata, | ||
| bytes calldata | ||
| ) external view override returns (bytes4) { | ||
| ( | ||
| uint256 chainId, | ||
| address boundTokenContract, | ||
| uint256 boundTokenId | ||
| ) = this.token(); | ||
|
|
||
| if (chainId == block.chainid && msg.sender == boundTokenContract) { | ||
| // We block the transfer only if the sender has no balance left after the transfer. | ||
| // Note: ERC-1155 prescribes that balances are updated BEFORE the call to onERC1155BatchReceived. | ||
| for (uint256 i = 0; i < ids.length; i++) { | ||
| if (ids[i] == boundTokenId) { | ||
| if ( | ||
| IERC1155(boundTokenContract).balanceOf( | ||
| from, | ||
| boundTokenId | ||
| ) == 0 | ||
| ) { | ||
| revert OwnershipCycle(); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return 0xbc197c81; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| //SPDX-License-Identifier: LGPL-3.0 | ||
| pragma solidity ^0.8.12; | ||
|
|
||
| import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; | ||
| import "./base/ThresholdMech.sol"; | ||
| import "./libraries/MinimalProxyStore.sol"; | ||
|
|
||
| /** | ||
| * @dev A Mech that is operated by any holder of a minimum ERC20 token balance | ||
| */ | ||
| contract ERC20ThresholdMech is ThresholdMech { | ||
| function threshold() | ||
| public | ||
| view | ||
| returns (address token, uint256 minBalance) | ||
| { | ||
| return | ||
| abi.decode( | ||
| MinimalProxyStore.getContext(address(this)), | ||
| (address, uint256) | ||
| ); | ||
| } | ||
|
|
||
| function isOperator(address signer) public view override returns (bool) { | ||
| (address token, uint256 minBalance) = this.threshold(); | ||
|
|
||
| return IERC20(token).balanceOf(signer) >= minBalance; | ||
| } | ||
| } |
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Successfully deployed to the following URLs:
mech – ./
mech-gnosis-guild.vercel.app
mech-git-main-gnosis-guild.vercel.app
mech-omega.vercel.app