87 lines
2.0 KiB
Solidity
87 lines
2.0 KiB
Solidity
pragma solidity >=0.8.0;
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// Author: Louis Holbrook <dev@holbrook.no> 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
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// SPDX-License-Identifier: AGPL-3.0-or-later
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// File-version: 4
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// Description: Keyed smart contract registry
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contract ContractRegistry {
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mapping (bytes32 => address) entries;
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// Implements ERC173
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address public owner;
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// Implements Registry
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bytes32[] public identifier;
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// Implements ERC173
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event OwnershipTransferred(address indexed _previousOwner, address indexed _newOwner);
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// Implements Registry
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event AddressKey(bytes32 indexed _key, address _address);
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constructor(bytes32[] memory _identifiers) {
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owner = msg.sender;
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for (uint i = 0; i < _identifiers.length; i++) {
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identifier.push(_identifiers[i]);
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}
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}
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// Assign address to identifier
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function set(bytes32 _identifier, address _address) public returns (bool) {
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require(msg.sender == owner);
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require(entries[_identifier] == address(0));
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require(_address != address(0));
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bool found = false;
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for (uint i = 0; i < identifier.length; i++) {
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if (identifier[i] == _identifier) {
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found = true;
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}
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}
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require(found);
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entries[_identifier] = _address;
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emit AddressKey(_identifier, _address);
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return true;
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}
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// Implements EIP 173
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function transferOwnership(address _newOwner) public returns (bool) {
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address _oldOwner;
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require(msg.sender == owner, 'ERR_AXX');
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_oldOwner = owner;
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owner = _newOwner;
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emit OwnershipTransferred(_oldOwner, _newOwner);
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return true;
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}
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// Implements Registry
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function addressOf(bytes32 _identifier) public view returns (address) {
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return entries[_identifier];
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}
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// Implements Registry
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function identifierCount() public view returns(uint256) {
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return identifier.length;
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}
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// Implements ERC165
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function supportsInterface(bytes4 _sum) public pure returns (bool) {
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if (_sum == 0xeffbf671) { // Registry
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return true;
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}
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if (_sum == 0x01ffc9a7) { // ERC165
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return true;
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}
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if (_sum == 0x9493f8b2) { // ERC173
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return true;
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}
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return false;
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}
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}
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