119 lines
2.9 KiB
Solidity
119 lines
2.9 KiB
Solidity
pragma solidity >0.6.11;
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// SPDX-License-Identifier: GPL-3.0-or-later
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// TODO: inherit accounts index contract
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contract AccountsIndexAddressDeclarator {
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address public tokenAddress;
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bytes32 public tokenAddressHash;
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address public addressDeclaratorAddress;
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mapping(address => uint256) entryIndex;
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mapping(address => bool) writers;
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address[] entries;
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address public owner;
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address newOwner;
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event AddressAdded(address indexed addedAccount, uint256 indexed accountIndex); // AddressIndex
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event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); // EIP173
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constructor(address _tokenAddress, address _addressDeclaratorAddress) public {
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bytes memory _tokenAddressPadded;
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owner = msg.sender;
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addressDeclaratorAddress = _addressDeclaratorAddress;
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tokenAddress = _tokenAddress;
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_tokenAddressPadded = abi.encode(tokenAddress);
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tokenAddressHash = sha256(_tokenAddressPadded);
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entries.push(address(0));
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}
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function add(address _account) external returns (bool) {
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bool ok;
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bytes memory r;
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uint256 oldEntryIndex;
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require(writers[msg.sender]);
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require(entryIndex[_account] == 0);
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(ok, r) = addressDeclaratorAddress.call(abi.encodeWithSignature("addDeclaration(address,bytes32)", _account, tokenAddressHash));
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require(ok);
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require(r[31] == 0x01);
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oldEntryIndex = entries.length;
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entryIndex[_account] = oldEntryIndex;
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entries.push(_account);
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emit AddressAdded(_account, oldEntryIndex);
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return true;
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}
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// Implements AccountsIndex
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function have(address _account) external view returns (bool) {
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return entryIndex[_account] > 0;
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}
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// Implements AccountsIndex
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function entry(uint256 _idx) public returns (address) {
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return entries[_idx+1];
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}
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// Implements AccountsIndex
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function entryCount() public returns (uint256) {
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return entries.length - 1;
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}
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// Implements Writer
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function addWriter(address _writer) public returns (bool) {
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require(owner == msg.sender);
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writers[_writer] = true;
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return true;
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}
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// Implements Writer
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function deleteWriter(address _writer) public returns (bool) {
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require(owner == msg.sender);
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delete writers[_writer];
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return true;
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}
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// Implements EIP173
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function transferOwnership(address _newOwner) public returns (bool) {
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require(msg.sender == owner);
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newOwner = _newOwner;
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return true;
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}
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// Implements OwnedAccepter
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function acceptOwnership() public returns (bool) {
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address oldOwner;
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require(msg.sender == newOwner);
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oldOwner = owner;
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owner = newOwner;
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newOwner = address(0);
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emit OwnershipTransferred(oldOwner, owner);
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return true;
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}
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// Implements EIP165
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function supportsInterface(bytes4 _sum) public pure returns (bool) {
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if (_sum == 0xcbdb05c7) { // AccountsIndex
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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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if (_sum == 0x37a47be4) { // OwnedAccepter
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return true;
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}
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if (_sum == 0x80c84bd6) { // Writer
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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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