120 lines
3.2 KiB
Solidity
120 lines
3.2 KiB
Solidity
pragma solidity >0.6.11;
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// Author: Louis Holbrook <dev@holbrook.no> 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
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// SPDX-License-Identifier: GPL-3.0-or-later
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// File-version: 2
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// Description: Top-level smart contract registry for the CIC network
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contract ContractRegistryAddressDeclarator {
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// Implements EIP 173
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address public owner;
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address public addressDeclarator;
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bytes32[] public identifiers;
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mapping (bytes32 => address) entries; // contractidentifier -> address
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mapping (bytes32 => bytes32) chainIdentifiers; // contractidentifier -> chainidentifier
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mapping (bytes32 => bytes32) chainConfigs; // chainidentifier -> chainconfig
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constructor(address _addressDeclarator, bytes32[] memory _identifiers) public {
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owner = msg.sender;
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for (uint i = 0; i < _identifiers.length; i++) {
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identifiers.push(_identifiers[i]);
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}
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addressDeclarator = _addressDeclarator;
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}
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function set(bytes32 _identifier, address _address, bytes32 _chainDescriptor, bytes32 _chainConfig) public returns (bool) {
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require(msg.sender == owner);
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require(entries[_identifier] == address(0));
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bool ok;
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bytes memory r;
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bool found = false;
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bytes32 identifierHash;
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bytes memory buf;
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uint8 i;
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for (i = 0; i < identifiers.length; i++) {
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if (identifiers[i] == _identifier) {
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found = true;
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}
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}
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require(found, 'ERR_IDENTIFIER');
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buf = new bytes(32);
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for (i = 0; i < 32; i++) {
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buf[i] = _identifier[i];
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}
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identifierHash = sha256(buf);
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(ok, r) = addressDeclarator.call(abi.encodeWithSignature("addDeclaration(address,bytes32)", _address, identifierHash));
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require(ok);
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require(r[31] == 0x01);
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buf = new bytes(64);
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for (i = 0; i < 32; i++) {
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buf[i] = identifierHash[i];
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}
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for (i = 0; i < 32; i++) {
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buf[i+32] = _chainDescriptor[i];
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}
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identifierHash = sha256(buf);
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(ok, r) = addressDeclarator.call(abi.encodeWithSignature("addDeclaration(address,bytes32)", _address, identifierHash));
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require(ok);
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require(r[31] == 0x01);
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for (i = 0; i < 32; i++) {
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buf[i] = identifierHash[i];
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}
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for (i = 0; i < 32; i++) {
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buf[i+32] = _chainConfig[i];
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}
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identifierHash = sha256(buf);
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(ok, r) = addressDeclarator.call(abi.encodeWithSignature("addDeclaration(address,bytes32)", _address, identifierHash));
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require(ok);
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require(r[31] == 0x01);
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entries[_identifier] = _address;
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chainIdentifiers[_identifier] = _chainDescriptor;
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chainConfigs[_chainDescriptor] = _chainConfig;
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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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require(msg.sender == owner);
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owner = _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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function chainOf(bytes32 _identifier) public view returns (bytes32) {
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return chainIdentifiers[_identifier];
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}
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function configSumOf(bytes32 _chain) public view returns (bytes32) {
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return chainConfigs[_chain];
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}
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// Implements EIP 165
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function supportsInterface(bytes4 _sum) public pure returns (bool) {
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if (_sum == 0xbb34534c) { // Registry
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return true;
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}
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if (_sum == 0x01ffc9a7) { // EIP165
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return true;
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}
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if (_sum == 0x9493f8b2) { // EIP173
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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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