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Merge pull request #657 from PolymathNetwork/port-restricted-partial-…
…sale-tm Port RestrictedPartialSale TM in 3.x
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contracts/modules/TransferManager/RPTM/RestrictedPartialSaleTM.sol
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| pragma solidity ^0.5.0; | ||
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| import "../TransferManager.sol"; | ||
| import "./RestrictedPartialSaleTMStorage.sol"; | ||
| import "openzeppelin-solidity/contracts/math/SafeMath.sol"; | ||
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| /** | ||
| * @title This TransferManager is used to validate the transaction where partial balance of an | ||
| * investor is not allowed to trnasfer beside investor is present in the exemption list | ||
| */ | ||
| contract RestrictedPartialSaleTM is RestrictedPartialSaleTMStorage, TransferManager { | ||
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| // Emit when the token holder is added/removed from the exemption list | ||
| event ChangedExemptWalletList(address indexed _wallet, bool _exempted); | ||
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| /** | ||
| * @notice Constructor | ||
| * @param _securityToken Address of the security token | ||
| * @param _polyAddress Address of the polytoken | ||
| */ | ||
| constructor (address _securityToken, address _polyAddress) | ||
| public | ||
| Module(_securityToken, _polyAddress) | ||
| { | ||
| } | ||
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| /** | ||
| * @notice This function returns the signature of configure function | ||
| */ | ||
| function getInitFunction() public pure returns (bytes4) { | ||
| return this.configure.selector; | ||
| } | ||
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| /** | ||
| * @notice Used to initialize the variables of the contract | ||
| * @param _treasuryWallet Ethereum address of the treasury wallet | ||
| */ | ||
| function configure(address _treasuryWallet) external onlyFactory { | ||
| address treasuryWallet = _treasuryWallet == address(0) ? IDataStore(getDataStore()).getAddress(TREASURY) : _treasuryWallet; | ||
| if (treasuryWallet != address(0)) | ||
| _changeExemptionWalletList(treasuryWallet, true); | ||
| } | ||
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| /** | ||
| * @notice Used to verify the transfer transaction and prevent a transfer if it passes the allowed amount of token holders | ||
| * @param _from Address of the sender | ||
| * @param _amount Amount to send | ||
| */ | ||
| function executeTransfer( | ||
| address _from, | ||
| address /* _to */, | ||
| uint256 _amount, | ||
| bytes calldata /* _data */ | ||
| ) | ||
| external | ||
| returns (Result) | ||
| { | ||
| (Result success,)= _verifyTransfer(_from, _amount); | ||
| return success; | ||
| } | ||
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| /** | ||
| * @notice Used to verify the transfer transaction and prevent a transfer if it passes the allowed amount of token holders | ||
| * @param _from Address of the sender | ||
| * @param _amount Amount to send | ||
| */ | ||
| function verifyTransfer( | ||
| address _from, | ||
| address /* _to */, | ||
| uint256 _amount, | ||
| bytes calldata /* _data */ | ||
| ) | ||
| external | ||
| view | ||
| returns(Result, bytes32) | ||
| { | ||
| return _verifyTransfer(_from, _amount); | ||
| } | ||
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| function _verifyTransfer(address _from, uint256 _amount) internal view returns (Result, bytes32) { | ||
| if (!paused && _from != address(0) && exemptIndex[_from] == 0) { | ||
| if (securityToken.balanceOf(_from) != _amount) | ||
| return (Result.INVALID, bytes32(uint256(address(this)) << 96)); | ||
| } | ||
| return (Result.NA, bytes32(0)); | ||
| } | ||
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| /** | ||
| * @notice Add/Remove wallet address from the exempt list | ||
| * @param _wallet Ethereum wallet/contract address that need to be exempted | ||
| * @param _exempted Boolean value used to add (i.e true) or remove (i.e false) from the list | ||
| */ | ||
| function changeExemptWalletList(address _wallet, bool _exempted) external withPerm(OPERATOR) { | ||
| _changeExemptionWalletList(_wallet, _exempted); | ||
| } | ||
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| /** | ||
| * @notice Add/Remove multiple wallet addresses from the exempt list | ||
| * @param _wallet Ethereum wallet/contract addresses that need to be exempted | ||
| * @param _exempted Boolean value used to add (i.e true) or remove (i.e false) from the list | ||
| */ | ||
| function changeExemptWalletListMulti(address[] memory _wallet, bool[] memory _exempted) public withPerm(OPERATOR) { | ||
| require(_wallet.length == _exempted.length, "Length mismatch"); | ||
| for (uint256 i = 0; i < _wallet.length; i++) { | ||
| _changeExemptionWalletList(_wallet[i], _exempted[i]); | ||
| } | ||
| } | ||
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| function _changeExemptionWalletList(address _wallet, bool _exempted) internal { | ||
| require(_wallet != address(0), "Invalid address"); | ||
| uint256 exemptIndexWallet = exemptIndex[_wallet]; | ||
| require((exemptIndexWallet == 0) == _exempted, "Exemption state doesn't change"); | ||
| if (_exempted) { | ||
| exemptAddresses.push(_wallet); | ||
| exemptIndex[_wallet] = exemptAddresses.length; | ||
| } else { | ||
| exemptAddresses[exemptIndexWallet - 1] = exemptAddresses[exemptAddresses.length - 1]; | ||
| exemptIndex[exemptAddresses[exemptIndexWallet - 1]] = exemptIndexWallet; | ||
| delete exemptIndex[_wallet]; | ||
| exemptAddresses.length --; | ||
| } | ||
| emit ChangedExemptWalletList(_wallet, _exempted); | ||
| } | ||
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| /** | ||
| * @notice return the exempted addresses list | ||
| */ | ||
| function getExemptAddresses() external view returns(address[] memory) { | ||
| return exemptAddresses; | ||
| } | ||
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| /** | ||
| * @notice Return the permissions flag that are associated with Restricted partial trnasfer manager | ||
| * @return bytes32 array | ||
| */ | ||
| function getPermissions() public view returns(bytes32[] memory) { | ||
| bytes32[] memory allPermissions = new bytes32[](1); | ||
| allPermissions[0] = OPERATOR; | ||
| return allPermissions; | ||
| } | ||
| } |
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contracts/modules/TransferManager/RPTM/RestrictedPartialSaleTMFactory.sol
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| pragma solidity ^0.5.0; | ||
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| import "./RestrictedPartialSaleTMProxy.sol"; | ||
| import "../../UpgradableModuleFactory.sol"; | ||
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| /** | ||
| * @title Factory for deploying RestrictedPartialSale module | ||
| */ | ||
| contract RestrictedPartialSaleTMFactory is UpgradableModuleFactory { | ||
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| /** | ||
| * @notice Constructor | ||
| * @param _setupCost Setup cost of the module | ||
| * @param _logicContract Contract address that contains the logic related to `description` | ||
| * @param _polymathRegistry Address of the Polymath registry | ||
| * @param _isCostInPoly true = cost in Poly, false = USD | ||
| */ | ||
| constructor ( | ||
| uint256 _setupCost, | ||
| address _logicContract, | ||
| address _polymathRegistry, | ||
| bool _isCostInPoly | ||
| ) | ||
| public | ||
| UpgradableModuleFactory("3.1.0", _setupCost, _logicContract, _polymathRegistry, _isCostInPoly) | ||
| { | ||
| initialVersion = "3.1.0"; | ||
| name = "RestrictedPartialSaleTM"; | ||
| title = "Restricted Partial Sale Transfer Manager"; | ||
| description = "TM will not allow investors to transact partial balance of the investors"; | ||
| typesData.push(2); | ||
| tagsData.push("PartialSale"); | ||
| tagsData.push("Transfer Restriction"); | ||
| tagsData.push("Restricted transfer"); | ||
| compatibleSTVersionRange["lowerBound"] = VersionUtils.pack(uint8(3), uint8(0), uint8(0)); | ||
| compatibleSTVersionRange["upperBound"] = VersionUtils.pack(uint8(3), uint8(1), uint8(0)); | ||
| } | ||
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| /** | ||
| * @notice Used to launch the Module with the help of factory | ||
| * @return address Contract address of the Module | ||
| */ | ||
| function deploy( | ||
| bytes calldata _data | ||
| ) | ||
| external | ||
| returns(address) | ||
| { | ||
| address restrictedPartialSaleTM = address( | ||
| new RestrictedPartialSaleTMProxy( | ||
| logicContracts[latestUpgrade].version, | ||
| msg.sender, | ||
| polymathRegistry.getAddress("PolyToken"), | ||
| logicContracts[latestUpgrade].logicContract | ||
| ) | ||
| ); | ||
| _initializeModule(restrictedPartialSaleTM, _data); | ||
| return restrictedPartialSaleTM; | ||
| } | ||
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| } |
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