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fix: restrict owner change in _beforeTokenTransfer
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Original file line number | Diff line number | Diff line change |
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// SPDX-License-Identifier: Apache-2.0 | ||
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pragma solidity ^0.8.4; | ||
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// modules | ||
import { | ||
LSP8IdentifiableDigitalAsset | ||
} from "../../LSP8IdentifiableDigitalAsset/LSP8IdentifiableDigitalAsset.sol"; | ||
import { | ||
LSP8Burnable | ||
} from "../../LSP8IdentifiableDigitalAsset/extensions/LSP8Burnable.sol"; | ||
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contract LSP8TransferOwnerChange is LSP8IdentifiableDigitalAsset, LSP8Burnable { | ||
// solhint-disable-next-line no-empty-blocks | ||
constructor( | ||
string memory name_, | ||
string memory symbol_, | ||
address newOwner_, | ||
uint256 lsp4TokenType_, | ||
uint256 lsp8TokenIdFormat_ | ||
) | ||
LSP8IdentifiableDigitalAsset( | ||
name_, | ||
symbol_, | ||
newOwner_, | ||
lsp4TokenType_, | ||
lsp8TokenIdFormat_ | ||
) | ||
{} | ||
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function mint( | ||
address to, | ||
bytes32 tokenId, | ||
bool force, | ||
bytes memory data | ||
) public { | ||
_mint(to, tokenId, force, data); | ||
} | ||
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function _beforeTokenTransfer( | ||
address, | ||
address, | ||
bytes32 tokenId, | ||
bytes memory | ||
) internal override { | ||
// if tokenID exist transfer token ownership to this contract | ||
if (_exists(tokenId)) { | ||
_tokenOwners[tokenId] = address(this); | ||
} | ||
} | ||
} |
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