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Contract Name:
ProtocolIdRegistry
Compiler Version
v0.7.1+commit.f4a555be
Optimization Enabled:
Yes with 9999 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.7.0; pragma experimental ABIEncoderV2; import "@balancer-labs/v2-interfaces/contracts/standalone-utils/IProtocolIdRegistry.sol"; import "@balancer-labs/v2-solidity-utils/contracts/helpers/SingletonAuthentication.sol"; contract ProtocolIdRegistry is IProtocolIdRegistry, SingletonAuthentication { struct ProtocolIdData { string name; bool registered; } mapping(uint256 => ProtocolIdData) private _protocolIdData; modifier withValidProtocolId(uint256 protocolId) { require(isValidProtocolId(protocolId), "Non-existent protocol ID"); _; } constructor(IVault vault) SingletonAuthentication(vault) { _registerProtocolId(ProtocolId.AAVE_V1, "Aave v1"); _registerProtocolId(ProtocolId.AAVE_V2, "Aave v2"); _registerProtocolId(ProtocolId.AAVE_V3, "Aave v3"); _registerProtocolId(ProtocolId.AMPLEFORTH, "Ampleforth"); _registerProtocolId(ProtocolId.BEEFY, "Beefy"); _registerProtocolId(ProtocolId.EULER, "Euler"); _registerProtocolId(ProtocolId.GEARBOX, "Gearbox"); _registerProtocolId(ProtocolId.IDLE, "Idle"); _registerProtocolId(ProtocolId.MORPHO, "Morpho"); _registerProtocolId(ProtocolId.RADIANT, "Radiant"); _registerProtocolId(ProtocolId.REAPER, "Reaper"); _registerProtocolId(ProtocolId.SILO, "Silo"); _registerProtocolId(ProtocolId.STARGATE, "Stargate"); _registerProtocolId(ProtocolId.STURDY, "Sturdy"); _registerProtocolId(ProtocolId.TESSERA, "Tessera"); _registerProtocolId(ProtocolId.TETU, "Tetu"); _registerProtocolId(ProtocolId.YEARN, "Yearn"); _registerProtocolId(ProtocolId.MIDAS, "Midas"); _registerProtocolId(ProtocolId.AGAVE, "Agave"); } /// @inheritdoc IProtocolIdRegistry function registerProtocolId(uint256 protocolId, string memory name) external override authenticate { _registerProtocolId(protocolId, name); } /// @inheritdoc IProtocolIdRegistry function renameProtocolId(uint256 protocolId, string memory newName) external override authenticate { _renameProtocolId(protocolId, newName); } /// @inheritdoc IProtocolIdRegistry function isValidProtocolId(uint256 protocolId) public view override returns (bool) { return _protocolIdData[protocolId].registered; } function _registerProtocolId(uint256 protocolId, string memory name) private { require(!isValidProtocolId(protocolId), "Protocol ID already registered"); _protocolIdData[protocolId] = ProtocolIdData({ name: name, registered: true }); emit ProtocolIdRegistered(protocolId, name); } function _renameProtocolId(uint256 protocolId, string memory newName) private { require(isValidProtocolId(protocolId), "Protocol ID not registered"); _protocolIdData[protocolId].name = newName; emit ProtocolIdRenamed(protocolId, newName); } /// @inheritdoc IProtocolIdRegistry function getProtocolName(uint256 protocolId) external view override withValidProtocolId(protocolId) returns (string memory) { return _protocolIdData[protocolId].name; } }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.7.0 <0.9.0; // solhint-disable /** * @dev Reverts if `condition` is false, with a revert reason containing `errorCode`. Only codes up to 999 are * supported. * Uses the default 'BAL' prefix for the error code */ function _require(bool condition, uint256 errorCode) pure { if (!condition) _revert(errorCode); } /** * @dev Reverts if `condition` is false, with a revert reason containing `errorCode`. Only codes up to 999 are * supported. */ function _require( bool condition, uint256 errorCode, bytes3 prefix ) pure { if (!condition) _revert(errorCode, prefix); } /** * @dev Reverts with a revert reason containing `errorCode`. Only codes up to 999 are supported. * Uses the default 'BAL' prefix for the error code */ function _revert(uint256 errorCode) pure { _revert(errorCode, 0x42414c); // This is the raw byte representation of "BAL" } /** * @dev Reverts with a revert reason containing `errorCode`. Only codes up to 999 are supported. */ function _revert(uint256 errorCode, bytes3 prefix) pure { uint256 prefixUint = uint256(uint24(prefix)); // We're going to dynamically create a revert string based on the error code, with the following format: // 'BAL#{errorCode}' // where the code is left-padded with zeroes to three digits (so they range from 000 to 999). // // We don't have revert strings embedded in the contract to save bytecode size: it takes much less space to store a // number (8 to 16 bits) than the individual string characters. // // The dynamic string creation algorithm that follows could be implemented in Solidity, but assembly allows for a // much denser implementation, again saving bytecode size. Given this function unconditionally reverts, this is a // safe place to rely on it without worrying about how its usage might affect e.g. memory contents. assembly { // First, we need to compute the ASCII representation of the error code. We assume that it is in the 0-999 // range, so we only need to convert three digits. To convert the digits to ASCII, we add 0x30, the value for // the '0' character. let units := add(mod(errorCode, 10), 0x30) errorCode := div(errorCode, 10) let tenths := add(mod(errorCode, 10), 0x30) errorCode := div(errorCode, 10) let hundreds := add(mod(errorCode, 10), 0x30) // With the individual characters, we can now construct the full string. // We first append the '#' character (0x23) to the prefix. In the case of 'BAL', it results in 0x42414c23 ('BAL#') // Then, we shift this by 24 (to provide space for the 3 bytes of the error code), and add the // characters to it, each shifted by a multiple of 8. // The revert reason is then shifted left by 200 bits (256 minus the length of the string, 7 characters * 8 bits // per character = 56) to locate it in the most significant part of the 256 slot (the beginning of a byte // array). let formattedPrefix := shl(24, add(0x23, shl(8, prefixUint))) let revertReason := shl(200, add(formattedPrefix, add(add(units, shl(8, tenths)), shl(16, hundreds)))) // We can now encode the reason in memory, which can be safely overwritten as we're about to revert. The encoded // message will have the following layout: // [ revert reason identifier ] [ string location offset ] [ string length ] [ string contents ] // The Solidity revert reason identifier is 0x08c739a0, the function selector of the Error(string) function. We // also write zeroes to the next 28 bytes of memory, but those are about to be overwritten. mstore(0x0, 0x08c379a000000000000000000000000000000000000000000000000000000000) // Next is the offset to the location of the string, which will be placed immediately after (20 bytes away). mstore(0x04, 0x0000000000000000000000000000000000000000000000000000000000000020) // The string length is fixed: 7 characters. mstore(0x24, 7) // Finally, the string itself is stored. mstore(0x44, revertReason) // Even if the string is only 7 bytes long, we need to return a full 32 byte slot containing it. The length of // the encoded message is therefore 4 + 32 + 32 + 32 = 100. revert(0, 100) } } library Errors { // Math uint256 internal constant ADD_OVERFLOW = 0; uint256 internal constant SUB_OVERFLOW = 1; uint256 internal constant SUB_UNDERFLOW = 2; uint256 internal constant MUL_OVERFLOW = 3; uint256 internal constant ZERO_DIVISION = 4; uint256 internal constant DIV_INTERNAL = 5; uint256 internal constant X_OUT_OF_BOUNDS = 6; uint256 internal constant Y_OUT_OF_BOUNDS = 7; uint256 internal constant PRODUCT_OUT_OF_BOUNDS = 8; uint256 internal constant INVALID_EXPONENT = 9; // Input uint256 internal constant OUT_OF_BOUNDS = 100; uint256 internal constant UNSORTED_ARRAY = 101; uint256 internal constant UNSORTED_TOKENS = 102; uint256 internal constant INPUT_LENGTH_MISMATCH = 103; uint256 internal constant ZERO_TOKEN = 104; uint256 internal constant INSUFFICIENT_DATA = 105; // Shared pools uint256 internal constant MIN_TOKENS = 200; uint256 internal constant MAX_TOKENS = 201; uint256 internal constant MAX_SWAP_FEE_PERCENTAGE = 202; uint256 internal constant MIN_SWAP_FEE_PERCENTAGE = 203; uint256 internal constant MINIMUM_BPT = 204; uint256 internal constant CALLER_NOT_VAULT = 205; uint256 internal constant UNINITIALIZED = 206; uint256 internal constant BPT_IN_MAX_AMOUNT = 207; uint256 internal constant BPT_OUT_MIN_AMOUNT = 208; uint256 internal constant EXPIRED_PERMIT = 209; uint256 internal constant NOT_TWO_TOKENS = 210; uint256 internal constant DISABLED = 211; // Pools uint256 internal constant MIN_AMP = 300; uint256 internal constant MAX_AMP = 301; uint256 internal constant MIN_WEIGHT = 302; uint256 internal constant MAX_STABLE_TOKENS = 303; uint256 internal constant MAX_IN_RATIO = 304; uint256 internal constant MAX_OUT_RATIO = 305; uint256 internal constant MIN_BPT_IN_FOR_TOKEN_OUT = 306; uint256 internal constant MAX_OUT_BPT_FOR_TOKEN_IN = 307; uint256 internal constant NORMALIZED_WEIGHT_INVARIANT = 308; uint256 internal constant INVALID_TOKEN = 309; uint256 internal constant UNHANDLED_JOIN_KIND = 310; uint256 internal constant ZERO_INVARIANT = 311; uint256 internal constant ORACLE_INVALID_SECONDS_QUERY = 312; uint256 internal constant ORACLE_NOT_INITIALIZED = 313; uint256 internal constant ORACLE_QUERY_TOO_OLD = 314; uint256 internal constant ORACLE_INVALID_INDEX = 315; uint256 internal constant ORACLE_BAD_SECS = 316; uint256 internal constant AMP_END_TIME_TOO_CLOSE = 317; uint256 internal constant AMP_ONGOING_UPDATE = 318; uint256 internal constant AMP_RATE_TOO_HIGH = 319; uint256 internal constant AMP_NO_ONGOING_UPDATE = 320; uint256 internal constant STABLE_INVARIANT_DIDNT_CONVERGE = 321; uint256 internal constant STABLE_GET_BALANCE_DIDNT_CONVERGE = 322; uint256 internal constant RELAYER_NOT_CONTRACT = 323; uint256 internal constant BASE_POOL_RELAYER_NOT_CALLED = 324; uint256 internal constant REBALANCING_RELAYER_REENTERED = 325; uint256 internal constant GRADUAL_UPDATE_TIME_TRAVEL = 326; uint256 internal constant SWAPS_DISABLED = 327; uint256 internal constant CALLER_IS_NOT_LBP_OWNER = 328; uint256 internal constant PRICE_RATE_OVERFLOW = 329; uint256 internal constant INVALID_JOIN_EXIT_KIND_WHILE_SWAPS_DISABLED = 330; uint256 internal constant WEIGHT_CHANGE_TOO_FAST = 331; uint256 internal constant LOWER_GREATER_THAN_UPPER_TARGET = 332; uint256 internal constant UPPER_TARGET_TOO_HIGH = 333; uint256 internal constant UNHANDLED_BY_LINEAR_POOL = 334; uint256 internal constant OUT_OF_TARGET_RANGE = 335; uint256 internal constant UNHANDLED_EXIT_KIND = 336; uint256 internal constant UNAUTHORIZED_EXIT = 337; uint256 internal constant MAX_MANAGEMENT_SWAP_FEE_PERCENTAGE = 338; uint256 internal constant UNHANDLED_BY_MANAGED_POOL = 339; uint256 internal constant UNHANDLED_BY_PHANTOM_POOL = 340; uint256 internal constant TOKEN_DOES_NOT_HAVE_RATE_PROVIDER = 341; uint256 internal constant INVALID_INITIALIZATION = 342; uint256 internal constant OUT_OF_NEW_TARGET_RANGE = 343; uint256 internal constant FEATURE_DISABLED = 344; uint256 internal constant UNINITIALIZED_POOL_CONTROLLER = 345; uint256 internal constant SET_SWAP_FEE_DURING_FEE_CHANGE = 346; uint256 internal constant SET_SWAP_FEE_PENDING_FEE_CHANGE = 347; uint256 internal constant CHANGE_TOKENS_DURING_WEIGHT_CHANGE = 348; uint256 internal constant CHANGE_TOKENS_PENDING_WEIGHT_CHANGE = 349; uint256 internal constant MAX_WEIGHT = 350; uint256 internal constant UNAUTHORIZED_JOIN = 351; uint256 internal constant MAX_MANAGEMENT_AUM_FEE_PERCENTAGE = 352; uint256 internal constant FRACTIONAL_TARGET = 353; uint256 internal constant ADD_OR_REMOVE_BPT = 354; uint256 internal constant INVALID_CIRCUIT_BREAKER_BOUNDS = 355; uint256 internal constant CIRCUIT_BREAKER_TRIPPED = 356; uint256 internal constant MALICIOUS_QUERY_REVERT = 357; uint256 internal constant JOINS_EXITS_DISABLED = 358; // Lib uint256 internal constant REENTRANCY = 400; uint256 internal constant SENDER_NOT_ALLOWED = 401; uint256 internal constant PAUSED = 402; uint256 internal constant PAUSE_WINDOW_EXPIRED = 403; uint256 internal constant MAX_PAUSE_WINDOW_DURATION = 404; uint256 internal constant MAX_BUFFER_PERIOD_DURATION = 405; uint256 internal constant INSUFFICIENT_BALANCE = 406; uint256 internal constant INSUFFICIENT_ALLOWANCE = 407; uint256 internal constant ERC20_TRANSFER_FROM_ZERO_ADDRESS = 408; uint256 internal constant ERC20_TRANSFER_TO_ZERO_ADDRESS = 409; uint256 internal constant ERC20_MINT_TO_ZERO_ADDRESS = 410; uint256 internal constant ERC20_BURN_FROM_ZERO_ADDRESS = 411; uint256 internal constant ERC20_APPROVE_FROM_ZERO_ADDRESS = 412; uint256 internal constant ERC20_APPROVE_TO_ZERO_ADDRESS = 413; uint256 internal constant ERC20_TRANSFER_EXCEEDS_ALLOWANCE = 414; uint256 internal constant ERC20_DECREASED_ALLOWANCE_BELOW_ZERO = 415; uint256 internal constant ERC20_TRANSFER_EXCEEDS_BALANCE = 416; uint256 internal constant ERC20_BURN_EXCEEDS_ALLOWANCE = 417; uint256 internal constant SAFE_ERC20_CALL_FAILED = 418; uint256 internal constant ADDRESS_INSUFFICIENT_BALANCE = 419; uint256 internal constant ADDRESS_CANNOT_SEND_VALUE = 420; uint256 internal constant SAFE_CAST_VALUE_CANT_FIT_INT256 = 421; uint256 internal constant GRANT_SENDER_NOT_ADMIN = 422; uint256 internal constant REVOKE_SENDER_NOT_ADMIN = 423; uint256 internal constant RENOUNCE_SENDER_NOT_ALLOWED = 424; uint256 internal constant BUFFER_PERIOD_EXPIRED = 425; uint256 internal constant CALLER_IS_NOT_OWNER = 426; uint256 internal constant NEW_OWNER_IS_ZERO = 427; uint256 internal constant CODE_DEPLOYMENT_FAILED = 428; uint256 internal constant CALL_TO_NON_CONTRACT = 429; uint256 internal constant LOW_LEVEL_CALL_FAILED = 430; uint256 internal constant NOT_PAUSED = 431; uint256 internal constant ADDRESS_ALREADY_ALLOWLISTED = 432; uint256 internal constant ADDRESS_NOT_ALLOWLISTED = 433; uint256 internal constant ERC20_BURN_EXCEEDS_BALANCE = 434; uint256 internal constant INVALID_OPERATION = 435; uint256 internal constant CODEC_OVERFLOW = 436; uint256 internal constant IN_RECOVERY_MODE = 437; uint256 internal constant NOT_IN_RECOVERY_MODE = 438; uint256 internal constant INDUCED_FAILURE = 439; uint256 internal constant EXPIRED_SIGNATURE = 440; uint256 internal constant MALFORMED_SIGNATURE = 441; uint256 internal constant SAFE_CAST_VALUE_CANT_FIT_UINT64 = 442; uint256 internal constant UNHANDLED_FEE_TYPE = 443; uint256 internal constant BURN_FROM_ZERO = 444; // Vault uint256 internal constant INVALID_POOL_ID = 500; uint256 internal constant CALLER_NOT_POOL = 501; uint256 internal constant SENDER_NOT_ASSET_MANAGER = 502; uint256 internal constant USER_DOESNT_ALLOW_RELAYER = 503; uint256 internal constant INVALID_SIGNATURE = 504; uint256 internal constant EXIT_BELOW_MIN = 505; uint256 internal constant JOIN_ABOVE_MAX = 506; uint256 internal constant SWAP_LIMIT = 507; uint256 internal constant SWAP_DEADLINE = 508; uint256 internal constant CANNOT_SWAP_SAME_TOKEN = 509; uint256 internal constant UNKNOWN_AMOUNT_IN_FIRST_SWAP = 510; uint256 internal constant MALCONSTRUCTED_MULTIHOP_SWAP = 511; uint256 internal constant INTERNAL_BALANCE_OVERFLOW = 512; uint256 internal constant INSUFFICIENT_INTERNAL_BALANCE = 513; uint256 internal constant INVALID_ETH_INTERNAL_BALANCE = 514; uint256 internal constant INVALID_POST_LOAN_BALANCE = 515; uint256 internal constant INSUFFICIENT_ETH = 516; uint256 internal constant UNALLOCATED_ETH = 517; uint256 internal constant ETH_TRANSFER = 518; uint256 internal constant CANNOT_USE_ETH_SENTINEL = 519; uint256 internal constant TOKENS_MISMATCH = 520; uint256 internal constant TOKEN_NOT_REGISTERED = 521; uint256 internal constant TOKEN_ALREADY_REGISTERED = 522; uint256 internal constant TOKENS_ALREADY_SET = 523; uint256 internal constant TOKENS_LENGTH_MUST_BE_2 = 524; uint256 internal constant NONZERO_TOKEN_BALANCE = 525; uint256 internal constant BALANCE_TOTAL_OVERFLOW = 526; uint256 internal constant POOL_NO_TOKENS = 527; uint256 internal constant INSUFFICIENT_FLASH_LOAN_BALANCE = 528; // Fees uint256 internal constant SWAP_FEE_PERCENTAGE_TOO_HIGH = 600; uint256 internal constant FLASH_LOAN_FEE_PERCENTAGE_TOO_HIGH = 601; uint256 internal constant INSUFFICIENT_FLASH_LOAN_FEE_AMOUNT = 602; uint256 internal constant AUM_FEE_PERCENTAGE_TOO_HIGH = 603; // FeeSplitter uint256 internal constant SPLITTER_FEE_PERCENTAGE_TOO_HIGH = 700; // Misc uint256 internal constant UNIMPLEMENTED = 998; uint256 internal constant SHOULD_NOT_HAPPEN = 999; }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.7.0 <0.9.0; interface IAuthentication { /** * @dev Returns the action identifier associated with the external function described by `selector`. */ function getActionId(bytes4 selector) external view returns (bytes32); }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.7.0 <0.9.0; /** * @dev Interface for the SignatureValidator helper, used to support meta-transactions. */ interface ISignaturesValidator { /** * @dev Returns the EIP712 domain separator. */ function getDomainSeparator() external view returns (bytes32); /** * @dev Returns the next nonce used by an address to sign messages. */ function getNextNonce(address user) external view returns (uint256); }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.7.0 <0.9.0; /** * @dev Interface for the TemporarilyPausable helper. */ interface ITemporarilyPausable { /** * @dev Emitted every time the pause state changes by `_setPaused`. */ event PausedStateChanged(bool paused); /** * @dev Returns the current paused state. */ function getPausedState() external view returns ( bool paused, uint256 pauseWindowEndTime, uint256 bufferPeriodEndTime ); }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.7.0 <0.9.0; import "../openzeppelin/IERC20.sol"; /** * @dev Interface for WETH9. * See https://github.com/gnosis/canonical-weth/blob/0dd1ea3e295eef916d0c6223ec63141137d22d67/contracts/WETH9.sol */ interface IWETH is IERC20 { function deposit() external payable; function withdraw(uint256 amount) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.7.0 <0.9.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address sender, address recipient, uint256 amount ) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.7.0; /** * @dev Registry of protocol IDs for external integrations with Balancer. The IDs chosen are arbitrary and do not affect * behavior of any Balancer contracts. They are used only to tag specific contracts (usually pools) at the data layer. */ interface IProtocolIdRegistry { // Emitted when a new protocol ID is registered. event ProtocolIdRegistered(uint256 indexed protocolId, string name); // Emitted when a protocol IDs name has been updated. event ProtocolIdRenamed(uint256 indexed protocolId, string name); /** * @dev Registers an ID (and name) to differentiate among protocols. Protocol IDs cannot be deregistered. */ function registerProtocolId(uint256 protocolId, string memory name) external; /** * @dev Changes the name of an existing protocol ID. Should only be used to update in the case of mistakes. */ function renameProtocolId(uint256 protocolId, string memory newName) external; /** * @dev Returns true if `protocolId` has been registered and can be queried. */ function isValidProtocolId(uint256 protocolId) external view returns (bool); /** * @dev Returns the name associated with a given `protocolId`. */ function getProtocolName(uint256 protocolId) external view returns (string memory); } library ProtocolId { // This list is not exhaustive - more protocol IDs can be added to the system. It is expected for this list to be // extended with new protocol IDs as they are registered, to keep them all in one place and reduce // likelihood of user error. // solhint-disable private-vars-leading-underscore uint256 internal constant AAVE_V1 = 0; uint256 internal constant AAVE_V2 = 1; uint256 internal constant AAVE_V3 = 2; uint256 internal constant AMPLEFORTH = 3; uint256 internal constant BEEFY = 4; uint256 internal constant EULER = 5; uint256 internal constant GEARBOX = 6; uint256 internal constant IDLE = 7; uint256 internal constant MORPHO = 8; uint256 internal constant RADIANT = 9; uint256 internal constant REAPER = 10; uint256 internal constant SILO = 11; uint256 internal constant STARGATE = 12; uint256 internal constant STURDY = 13; uint256 internal constant TESSERA = 14; uint256 internal constant TETU = 15; uint256 internal constant YEARN = 16; uint256 internal constant MIDAS = 17; uint256 internal constant AGAVE = 18; // solhint-enable private-vars-leading-underscore }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.7.0 <0.9.0; /** * @dev This is an empty interface used to represent either ERC20-conforming token contracts or ETH (using the zero * address sentinel value). We're just relying on the fact that `interface` can be used to declare new address-like * types. * * This concept is unrelated to a Pool's Asset Managers. */ interface IAsset { // solhint-disable-previous-line no-empty-blocks }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.7.0 <0.9.0; interface IAuthorizer { /** * @dev Returns true if `account` can perform the action described by `actionId` in the contract `where`. */ function canPerform( bytes32 actionId, address account, address where ) external view returns (bool); }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.7.0 <0.9.0; // Inspired by Aave Protocol's IFlashLoanReceiver. import "../solidity-utils/openzeppelin/IERC20.sol"; interface IFlashLoanRecipient { /** * @dev When `flashLoan` is called on the Vault, it invokes the `receiveFlashLoan` hook on the recipient. * * At the time of the call, the Vault will have transferred `amounts` for `tokens` to the recipient. Before this * call returns, the recipient must have transferred `amounts` plus `feeAmounts` for each token back to the * Vault, or else the entire flash loan will revert. * * `userData` is the same value passed in the `IVault.flashLoan` call. */ function receiveFlashLoan( IERC20[] memory tokens, uint256[] memory amounts, uint256[] memory feeAmounts, bytes memory userData ) external; }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.7.0 <0.9.0; pragma experimental ABIEncoderV2; import "../solidity-utils/openzeppelin/IERC20.sol"; import "./IVault.sol"; import "./IAuthorizer.sol"; interface IProtocolFeesCollector { event SwapFeePercentageChanged(uint256 newSwapFeePercentage); event FlashLoanFeePercentageChanged(uint256 newFlashLoanFeePercentage); function withdrawCollectedFees( IERC20[] calldata tokens, uint256[] calldata amounts, address recipient ) external; function setSwapFeePercentage(uint256 newSwapFeePercentage) external; function setFlashLoanFeePercentage(uint256 newFlashLoanFeePercentage) external; function getSwapFeePercentage() external view returns (uint256); function getFlashLoanFeePercentage() external view returns (uint256); function getCollectedFeeAmounts(IERC20[] memory tokens) external view returns (uint256[] memory feeAmounts); function getAuthorizer() external view returns (IAuthorizer); function vault() external view returns (IVault); }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma experimental ABIEncoderV2; import "../solidity-utils/openzeppelin/IERC20.sol"; import "../solidity-utils/helpers/IAuthentication.sol"; import "../solidity-utils/helpers/ISignaturesValidator.sol"; import "../solidity-utils/helpers/ITemporarilyPausable.sol"; import "../solidity-utils/misc/IWETH.sol"; import "./IAsset.sol"; import "./IAuthorizer.sol"; import "./IFlashLoanRecipient.sol"; import "./IProtocolFeesCollector.sol"; pragma solidity >=0.7.0 <0.9.0; /** * @dev Full external interface for the Vault core contract - no external or public methods exist in the contract that * don't override one of these declarations. */ interface IVault is ISignaturesValidator, ITemporarilyPausable, IAuthentication { // Generalities about the Vault: // // - Whenever documentation refers to 'tokens', it strictly refers to ERC20-compliant token contracts. Tokens are // transferred out of the Vault by calling the `IERC20.transfer` function, and transferred in by calling // `IERC20.transferFrom`. In these cases, the sender must have previously allowed the Vault to use their tokens by // calling `IERC20.approve`. The only deviation from the ERC20 standard that is supported is functions not returning // a boolean value: in these scenarios, a non-reverting call is assumed to be successful. // // - All non-view functions in the Vault are non-reentrant: calling them while another one is mid-execution (e.g. // while execution control is transferred to a token contract during a swap) will result in a revert. View // functions can be called in a re-reentrant way, but doing so might cause them to return inconsistent results. // Contracts calling view functions in the Vault must make sure the Vault has not already been entered. // // - View functions revert if referring to either unregistered Pools, or unregistered tokens for registered Pools. // Authorizer // // Some system actions are permissioned, like setting and collecting protocol fees. This permissioning system exists // outside of the Vault in the Authorizer contract: the Vault simply calls the Authorizer to check if the caller // can perform a given action. /** * @dev Returns the Vault's Authorizer. */ function getAuthorizer() external view returns (IAuthorizer); /** * @dev Sets a new Authorizer for the Vault. The caller must be allowed by the current Authorizer to do this. * * Emits an `AuthorizerChanged` event. */ function setAuthorizer(IAuthorizer newAuthorizer) external; /** * @dev Emitted when a new authorizer is set by `setAuthorizer`. */ event AuthorizerChanged(IAuthorizer indexed newAuthorizer); // Relayers // // Additionally, it is possible for an account to perform certain actions on behalf of another one, using their // Vault ERC20 allowance and Internal Balance. These accounts are said to be 'relayers' for these Vault functions, // and are expected to be smart contracts with sound authentication mechanisms. For an account to be able to wield // this power, two things must occur: // - The Authorizer must grant the account the permission to be a relayer for the relevant Vault function. This // means that Balancer governance must approve each individual contract to act as a relayer for the intended // functions. // - Each user must approve the relayer to act on their behalf. // This double protection means users cannot be tricked into approving malicious relayers (because they will not // have been allowed by the Authorizer via governance), nor can malicious relayers approved by a compromised // Authorizer or governance drain user funds, since they would also need to be approved by each individual user. /** * @dev Returns true if `user` has approved `relayer` to act as a relayer for them. */ function hasApprovedRelayer(address user, address relayer) external view returns (bool); /** * @dev Allows `relayer` to act as a relayer for `sender` if `approved` is true, and disallows it otherwise. * * Emits a `RelayerApprovalChanged` event. */ function setRelayerApproval( address sender, address relayer, bool approved ) external; /** * @dev Emitted every time a relayer is approved or disapproved by `setRelayerApproval`. */ event RelayerApprovalChanged(address indexed relayer, address indexed sender, bool approved); // Internal Balance // // Users can deposit tokens into the Vault, where they are allocated to their Internal Balance, and later // transferred or withdrawn. It can also be used as a source of tokens when joining Pools, as a destination // when exiting them, and as either when performing swaps. This usage of Internal Balance results in greatly reduced // gas costs when compared to relying on plain ERC20 transfers, leading to large savings for frequent users. // // Internal Balance management features batching, which means a single contract call can be used to perform multiple // operations of different kinds, with different senders and recipients, at once. /** * @dev Returns `user`'s Internal Balance for a set of tokens. */ function getInternalBalance(address user, IERC20[] memory tokens) external view returns (uint256[] memory); /** * @dev Performs a set of user balance operations, which involve Internal Balance (deposit, withdraw or transfer) * and plain ERC20 transfers using the Vault's allowance. This last feature is particularly useful for relayers, as * it lets integrators reuse a user's Vault allowance. * * For each operation, if the caller is not `sender`, it must be an authorized relayer for them. */ function manageUserBalance(UserBalanceOp[] memory ops) external payable; /** * @dev Data for `manageUserBalance` operations, which include the possibility for ETH to be sent and received without manual WETH wrapping or unwrapping. */ struct UserBalanceOp { UserBalanceOpKind kind; IAsset asset; uint256 amount; address sender; address payable recipient; } // There are four possible operations in `manageUserBalance`: // // - DEPOSIT_INTERNAL // Increases the Internal Balance of the `recipient` account by transferring tokens from the corresponding // `sender`. The sender must have allowed the Vault to use their tokens via `IERC20.approve()`. // // ETH can be used by passing the ETH sentinel value as the asset and forwarding ETH in the call: it will be wrapped // and deposited as WETH. Any ETH amount remaining will be sent back to the caller (not the sender, which is // relevant for relayers). // // Emits an `InternalBalanceChanged` event. // // // - WITHDRAW_INTERNAL // Decreases the Internal Balance of the `sender` account by transferring tokens to the `recipient`. // // ETH can be used by passing the ETH sentinel value as the asset. This will deduct WETH instead, unwrap it and send // it to the recipient as ETH. // // Emits an `InternalBalanceChanged` event. // // // - TRANSFER_INTERNAL // Transfers tokens from the Internal Balance of the `sender` account to the Internal Balance of `recipient`. // // Reverts if the ETH sentinel value is passed. // // Emits an `InternalBalanceChanged` event. // // // - TRANSFER_EXTERNAL // Transfers tokens from `sender` to `recipient`, using the Vault's ERC20 allowance. This is typically used by // relayers, as it lets them reuse a user's Vault allowance. // // Reverts if the ETH sentinel value is passed. // // Emits an `ExternalBalanceTransfer` event. enum UserBalanceOpKind { DEPOSIT_INTERNAL, WITHDRAW_INTERNAL, TRANSFER_INTERNAL, TRANSFER_EXTERNAL } /** * @dev Emitted when a user's Internal Balance changes, either from calls to `manageUserBalance`, or through * interacting with Pools using Internal Balance. * * Because Internal Balance works exclusively with ERC20 tokens, ETH deposits and withdrawals will use the WETH * address. */ event InternalBalanceChanged(address indexed user, IERC20 indexed token, int256 delta); /** * @dev Emitted when a user's Vault ERC20 allowance is used by the Vault to transfer tokens to an external account. */ event ExternalBalanceTransfer(IERC20 indexed token, address indexed sender, address recipient, uint256 amount); // Pools // // There are three specialization settings for Pools, which allow for cheaper swaps at the cost of reduced // functionality: // // - General: no specialization, suited for all Pools. IGeneralPool is used for swap request callbacks, passing the // balance of all tokens in the Pool. These Pools have the largest swap costs (because of the extra storage reads), // which increase with the number of registered tokens. // // - Minimal Swap Info: IMinimalSwapInfoPool is used instead of IGeneralPool, which saves gas by only passing the // balance of the two tokens involved in the swap. This is suitable for some pricing algorithms, like the weighted // constant product one popularized by Balancer V1. Swap costs are smaller compared to general Pools, and are // independent of the number of registered tokens. // // - Two Token: only allows two tokens to be registered. This achieves the lowest possible swap gas cost. Like // minimal swap info Pools, these are called via IMinimalSwapInfoPool. enum PoolSpecialization { GENERAL, MINIMAL_SWAP_INFO, TWO_TOKEN } /** * @dev Registers the caller account as a Pool with a given specialization setting. Returns the Pool's ID, which * is used in all Pool-related functions. Pools cannot be deregistered, nor can the Pool's specialization be * changed. * * The caller is expected to be a smart contract that implements either `IGeneralPool` or `IMinimalSwapInfoPool`, * depending on the chosen specialization setting. This contract is known as the Pool's contract. * * Note that the same contract may register itself as multiple Pools with unique Pool IDs, or in other words, * multiple Pools may share the same contract. * * Emits a `PoolRegistered` event. */ function registerPool(PoolSpecialization specialization) external returns (bytes32); /** * @dev Emitted when a Pool is registered by calling `registerPool`. */ event PoolRegistered(bytes32 indexed poolId, address indexed poolAddress, PoolSpecialization specialization); /** * @dev Returns a Pool's contract address and specialization setting. */ function getPool(bytes32 poolId) external view returns (address, PoolSpecialization); /** * @dev Registers `tokens` for the `poolId` Pool. Must be called by the Pool's contract. * * Pools can only interact with tokens they have registered. Users join a Pool by transferring registered tokens, * exit by receiving registered tokens, and can only swap registered tokens. * * Each token can only be registered once. For Pools with the Two Token specialization, `tokens` must have a length * of two, that is, both tokens must be registered in the same `registerTokens` call, and they must be sorted in * ascending order. * * The `tokens` and `assetManagers` arrays must have the same length, and each entry in these indicates the Asset * Manager for the corresponding token. Asset Managers can manage a Pool's tokens via `managePoolBalance`, * depositing and withdrawing them directly, and can even set their balance to arbitrary amounts. They are therefore * expected to be highly secured smart contracts with sound design principles, and the decision to register an * Asset Manager should not be made lightly. * * Pools can choose not to assign an Asset Manager to a given token by passing in the zero address. Once an Asset * Manager is set, it cannot be changed except by deregistering the associated token and registering again with a * different Asset Manager. * * Emits a `TokensRegistered` event. */ function registerTokens( bytes32 poolId, IERC20[] memory tokens, address[] memory assetManagers ) external; /** * @dev Emitted when a Pool registers tokens by calling `registerTokens`. */ event TokensRegistered(bytes32 indexed poolId, IERC20[] tokens, address[] assetManagers); /** * @dev Deregisters `tokens` for the `poolId` Pool. Must be called by the Pool's contract. * * Only registered tokens (via `registerTokens`) can be deregistered. Additionally, they must have zero total * balance. For Pools with the Two Token specialization, `tokens` must have a length of two, that is, both tokens * must be deregistered in the same `deregisterTokens` call. * * A deregistered token can be re-registered later on, possibly with a different Asset Manager. * * Emits a `TokensDeregistered` event. */ function deregisterTokens(bytes32 poolId, IERC20[] memory tokens) external; /** * @dev Emitted when a Pool deregisters tokens by calling `deregisterTokens`. */ event TokensDeregistered(bytes32 indexed poolId, IERC20[] tokens); /** * @dev Returns detailed information for a Pool's registered token. * * `cash` is the number of tokens the Vault currently holds for the Pool. `managed` is the number of tokens * withdrawn and held outside the Vault by the Pool's token Asset Manager. The Pool's total balance for `token` * equals the sum of `cash` and `managed`. * * Internally, `cash` and `managed` are stored using 112 bits. No action can ever cause a Pool's token `cash`, * `managed` or `total` balance to be greater than 2^112 - 1. * * `lastChangeBlock` is the number of the block in which `token`'s total balance was last modified (via either a * join, exit, swap, or Asset Manager update). This value is useful to avoid so-called 'sandwich attacks', for * example when developing price oracles. A change of zero (e.g. caused by a swap with amount zero) is considered a * change for this purpose, and will update `lastChangeBlock`. * * `assetManager` is the Pool's token Asset Manager. */ function getPoolTokenInfo(bytes32 poolId, IERC20 token) external view returns ( uint256 cash, uint256 managed, uint256 lastChangeBlock, address assetManager ); /** * @dev Returns a Pool's registered tokens, the total balance for each, and the latest block when *any* of * the tokens' `balances` changed. * * The order of the `tokens` array is the same order that will be used in `joinPool`, `exitPool`, as well as in all * Pool hooks (where applicable). Calls to `registerTokens` and `deregisterTokens` may change this order. * * If a Pool only registers tokens once, and these are sorted in ascending order, they will be stored in the same * order as passed to `registerTokens`. * * Total balances include both tokens held by the Vault and those withdrawn by the Pool's Asset Managers. These are * the amounts used by joins, exits and swaps. For a detailed breakdown of token balances, use `getPoolTokenInfo` * instead. */ function getPoolTokens(bytes32 poolId) external view returns ( IERC20[] memory tokens, uint256[] memory balances, uint256 lastChangeBlock ); /** * @dev Called by users to join a Pool, which transfers tokens from `sender` into the Pool's balance. This will * trigger custom Pool behavior, which will typically grant something in return to `recipient` - often tokenized * Pool shares. * * If the caller is not `sender`, it must be an authorized relayer for them. * * The `assets` and `maxAmountsIn` arrays must have the same length, and each entry indicates the maximum amount * to send for each asset. The amounts to send are decided by the Pool and not the Vault: it just enforces * these maximums. * * If joining a Pool that holds WETH, it is possible to send ETH directly: the Vault will do the wrapping. To enable * this mechanism, the IAsset sentinel value (the zero address) must be passed in the `assets` array instead of the * WETH address. Note that it is not possible to combine ETH and WETH in the same join. Any excess ETH will be sent * back to the caller (not the sender, which is important for relayers). * * `assets` must have the same length and order as the array returned by `getPoolTokens`. This prevents issues when * interacting with Pools that register and deregister tokens frequently. If sending ETH however, the array must be * sorted *before* replacing the WETH address with the ETH sentinel value (the zero address), which means the final * `assets` array might not be sorted. Pools with no registered tokens cannot be joined. * * If `fromInternalBalance` is true, the caller's Internal Balance will be preferred: ERC20 transfers will only * be made for the difference between the requested amount and Internal Balance (if any). Note that ETH cannot be * withdrawn from Internal Balance: attempting to do so will trigger a revert. * * This causes the Vault to call the `IBasePool.onJoinPool` hook on the Pool's contract, where Pools implement * their own custom logic. This typically requires additional information from the user (such as the expected number * of Pool shares). This can be encoded in the `userData` argument, which is ignored by the Vault and passed * directly to the Pool's contract, as is `recipient`. * * Emits a `PoolBalanceChanged` event. */ function joinPool( bytes32 poolId, address sender, address recipient, JoinPoolRequest memory request ) external payable; struct JoinPoolRequest { IAsset[] assets; uint256[] maxAmountsIn; bytes userData; bool fromInternalBalance; } /** * @dev Called by users to exit a Pool, which transfers tokens from the Pool's balance to `recipient`. This will * trigger custom Pool behavior, which will typically ask for something in return from `sender` - often tokenized * Pool shares. The amount of tokens that can be withdrawn is limited by the Pool's `cash` balance (see * `getPoolTokenInfo`). * * If the caller is not `sender`, it must be an authorized relayer for them. * * The `tokens` and `minAmountsOut` arrays must have the same length, and each entry in these indicates the minimum * token amount to receive for each token contract. The amounts to send are decided by the Pool and not the Vault: * it just enforces these minimums. * * If exiting a Pool that holds WETH, it is possible to receive ETH directly: the Vault will do the unwrapping. To * enable this mechanism, the IAsset sentinel value (the zero address) must be passed in the `assets` array instead * of the WETH address. Note that it is not possible to combine ETH and WETH in the same exit. * * `assets` must have the same length and order as the array returned by `getPoolTokens`. This prevents issues when * interacting with Pools that register and deregister tokens frequently. If receiving ETH however, the array must * be sorted *before* replacing the WETH address with the ETH sentinel value (the zero address), which means the * final `assets` array might not be sorted. Pools with no registered tokens cannot be exited. * * If `toInternalBalance` is true, the tokens will be deposited to `recipient`'s Internal Balance. Otherwise, * an ERC20 transfer will be performed. Note that ETH cannot be deposited to Internal Balance: attempting to * do so will trigger a revert. * * `minAmountsOut` is the minimum amount of tokens the user expects to get out of the Pool, for each token in the * `tokens` array. This array must match the Pool's registered tokens. * * This causes the Vault to call the `IBasePool.onExitPool` hook on the Pool's contract, where Pools implement * their own custom logic. This typically requires additional information from the user (such as the expected number * of Pool shares to return). This can be encoded in the `userData` argument, which is ignored by the Vault and * passed directly to the Pool's contract. * * Emits a `PoolBalanceChanged` event. */ function exitPool( bytes32 poolId, address sender, address payable recipient, ExitPoolRequest memory request ) external; struct ExitPoolRequest { IAsset[] assets; uint256[] minAmountsOut; bytes userData; bool toInternalBalance; } /** * @dev Emitted when a user joins or exits a Pool by calling `joinPool` or `exitPool`, respectively. */ event PoolBalanceChanged( bytes32 indexed poolId, address indexed liquidityProvider, IERC20[] tokens, int256[] deltas, uint256[] protocolFeeAmounts ); enum PoolBalanceChangeKind { JOIN, EXIT } // Swaps // // Users can swap tokens with Pools by calling the `swap` and `batchSwap` functions. To do this, // they need not trust Pool contracts in any way: all security checks are made by the Vault. They must however be // aware of the Pools' pricing algorithms in order to estimate the prices Pools will quote. // // The `swap` function executes a single swap, while `batchSwap` can perform multiple swaps in sequence. // In each individual swap, tokens of one kind are sent from the sender to the Pool (this is the 'token in'), // and tokens of another kind are sent from the Pool to the recipient in exchange (this is the 'token out'). // More complex swaps, such as one token in to multiple tokens out can be achieved by batching together // individual swaps. // // There are two swap kinds: // - 'given in' swaps, where the amount of tokens in (sent to the Pool) is known, and the Pool determines (via the // `onSwap` hook) the amount of tokens out (to send to the recipient). // - 'given out' swaps, where the amount of tokens out (received from the Pool) is known, and the Pool determines // (via the `onSwap` hook) the amount of tokens in (to receive from the sender). // // Additionally, it is possible to chain swaps using a placeholder input amount, which the Vault replaces with // the calculated output of the previous swap. If the previous swap was 'given in', this will be the calculated // tokenOut amount. If the previous swap was 'given out', it will use the calculated tokenIn amount. These extended // swaps are known as 'multihop' swaps, since they 'hop' through a number of intermediate tokens before arriving at // the final intended token. // // In all cases, tokens are only transferred in and out of the Vault (or withdrawn from and deposited into Internal // Balance) after all individual swaps have been completed, and the net token balance change computed. This makes // certain swap patterns, such as multihops, or swaps that interact with the same token pair in multiple Pools, cost // much less gas than they would otherwise. // // It also means that under certain conditions it is possible to perform arbitrage by swapping with multiple // Pools in a way that results in net token movement out of the Vault (profit), with no tokens being sent in (only // updating the Pool's internal accounting). // // To protect users from front-running or the market changing rapidly, they supply a list of 'limits' for each token // involved in the swap, where either the maximum number of tokens to send (by passing a positive value) or the // minimum amount of tokens to receive (by passing a negative value) is specified. // // Additionally, a 'deadline' timestamp can also be provided, forcing the swap to fail if it occurs after // this point in time (e.g. if the transaction failed to be included in a block promptly). // // If interacting with Pools that hold WETH, it is possible to both send and receive ETH directly: the Vault will do // the wrapping and unwrapping. To enable this mechanism, the IAsset sentinel value (the zero address) must be // passed in the `assets` array instead of the WETH address. Note that it is possible to combine ETH and WETH in the // same swap. Any excess ETH will be sent back to the caller (not the sender, which is relevant for relayers). // // Finally, Internal Balance can be used when either sending or receiving tokens. enum SwapKind { GIVEN_IN, GIVEN_OUT } /** * @dev Performs a swap with a single Pool. * * If the swap is 'given in' (the number of tokens to send to the Pool is known), it returns the amount of tokens * taken from the Pool, which must be greater than or equal to `limit`. * * If the swap is 'given out' (the number of tokens to take from the Pool is known), it returns the amount of tokens * sent to the Pool, which must be less than or equal to `limit`. * * Internal Balance usage and the recipient are determined by the `funds` struct. * * Emits a `Swap` event. */ function swap( SingleSwap memory singleSwap, FundManagement memory funds, uint256 limit, uint256 deadline ) external payable returns (uint256); /** * @dev Data for a single swap executed by `swap`. `amount` is either `amountIn` or `amountOut` depending on * the `kind` value. * * `assetIn` and `assetOut` are either token addresses, or the IAsset sentinel value for ETH (the zero address). * Note that Pools never interact with ETH directly: it will be wrapped to or unwrapped from WETH by the Vault. * * The `userData` field is ignored by the Vault, but forwarded to the Pool in the `onSwap` hook, and may be * used to extend swap behavior. */ struct SingleSwap { bytes32 poolId; SwapKind kind; IAsset assetIn; IAsset assetOut; uint256 amount; bytes userData; } /** * @dev Performs a series of swaps with one or multiple Pools. In each individual swap, the caller determines either * the amount of tokens sent to or received from the Pool, depending on the `kind` value. * * Returns an array with the net Vault asset balance deltas. Positive amounts represent tokens (or ETH) sent to the * Vault, and negative amounts represent tokens (or ETH) sent by the Vault. Each delta corresponds to the asset at * the same index in the `assets` array. * * Swaps are executed sequentially, in the order specified by the `swaps` array. Each array element describes a * Pool, the token to be sent to this Pool, the token to receive from it, and an amount that is either `amountIn` or * `amountOut` depending on the swap kind. * * Multihop swaps can be executed by passing an `amount` value of zero for a swap. This will cause the amount in/out * of the previous swap to be used as the amount in for the current one. In a 'given in' swap, 'tokenIn' must equal * the previous swap's `tokenOut`. For a 'given out' swap, `tokenOut` must equal the previous swap's `tokenIn`. * * The `assets` array contains the addresses of all assets involved in the swaps. These are either token addresses, * or the IAsset sentinel value for ETH (the zero address). Each entry in the `swaps` array specifies tokens in and * out by referencing an index in `assets`. Note that Pools never interact with ETH directly: it will be wrapped to * or unwrapped from WETH by the Vault. * * Internal Balance usage, sender, and recipient are determined by the `funds` struct. The `limits` array specifies * the minimum or maximum amount of each token the vault is allowed to transfer. * * `batchSwap` can be used to make a single swap, like `swap` does, but doing so requires more gas than the * equivalent `swap` call. * * Emits `Swap` events. */ function batchSwap( SwapKind kind, BatchSwapStep[] memory swaps, IAsset[] memory assets, FundManagement memory funds, int256[] memory limits, uint256 deadline ) external payable returns (int256[] memory); /** * @dev Data for each individual swap executed by `batchSwap`. The asset in and out fields are indexes into the * `assets` array passed to that function, and ETH assets are converted to WETH. * * If `amount` is zero, the multihop mechanism is used to determine the actual amount based on the amount in/out * from the previous swap, depending on the swap kind. * * The `userData` field is ignored by the Vault, but forwarded to the Pool in the `onSwap` hook, and may be * used to extend swap behavior. */ struct BatchSwapStep { bytes32 poolId; uint256 assetInIndex; uint256 assetOutIndex; uint256 amount; bytes userData; } /** * @dev Emitted for each individual swap performed by `swap` or `batchSwap`. */ event Swap( bytes32 indexed poolId, IERC20 indexed tokenIn, IERC20 indexed tokenOut, uint256 amountIn, uint256 amountOut ); /** * @dev All tokens in a swap are either sent from the `sender` account to the Vault, or from the Vault to the * `recipient` account. * * If the caller is not `sender`, it must be an authorized relayer for them. * * If `fromInternalBalance` is true, the `sender`'s Internal Balance will be preferred, performing an ERC20 * transfer for the difference between the requested amount and the User's Internal Balance (if any). The `sender` * must have allowed the Vault to use their tokens via `IERC20.approve()`. This matches the behavior of * `joinPool`. * * If `toInternalBalance` is true, tokens will be deposited to `recipient`'s internal balance instead of * transferred. This matches the behavior of `exitPool`. * * Note that ETH cannot be deposited to or withdrawn from Internal Balance: attempting to do so will trigger a * revert. */ struct FundManagement { address sender; bool fromInternalBalance; address payable recipient; bool toInternalBalance; } /** * @dev Simulates a call to `batchSwap`, returning an array of Vault asset deltas. Calls to `swap` cannot be * simulated directly, but an equivalent `batchSwap` call can and will yield the exact same result. * * Each element in the array corresponds to the asset at the same index, and indicates the number of tokens (or ETH) * the Vault would take from the sender (if positive) or send to the recipient (if negative). The arguments it * receives are the same that an equivalent `batchSwap` call would receive. * * Unlike `batchSwap`, this function performs no checks on the sender or recipient field in the `funds` struct. * This makes it suitable to be called by off-chain applications via eth_call without needing to hold tokens, * approve them for the Vault, or even know a user's address. * * Note that this function is not 'view' (due to implementation details): the client code must explicitly execute * eth_call instead of eth_sendTransaction. */ function queryBatchSwap( SwapKind kind, BatchSwapStep[] memory swaps, IAsset[] memory assets, FundManagement memory funds ) external returns (int256[] memory assetDeltas); // Flash Loans /** * @dev Performs a 'flash loan', sending tokens to `recipient`, executing the `receiveFlashLoan` hook on it, * and then reverting unless the tokens plus a proportional protocol fee have been returned. * * The `tokens` and `amounts` arrays must have the same length, and each entry in these indicates the loan amount * for each token contract. `tokens` must be sorted in ascending order. * * The 'userData' field is ignored by the Vault, and forwarded as-is to `recipient` as part of the * `receiveFlashLoan` call. * * Emits `FlashLoan` events. */ function flashLoan( IFlashLoanRecipient recipient, IERC20[] memory tokens, uint256[] memory amounts, bytes memory userData ) external; /** * @dev Emitted for each individual flash loan performed by `flashLoan`. */ event FlashLoan(IFlashLoanRecipient indexed recipient, IERC20 indexed token, uint256 amount, uint256 feeAmount); // Asset Management // // Each token registered for a Pool can be assigned an Asset Manager, which is able to freely withdraw the Pool's // tokens from the Vault, deposit them, or assign arbitrary values to its `managed` balance (see // `getPoolTokenInfo`). This makes them extremely powerful and dangerous. Even if an Asset Manager only directly // controls one of the tokens in a Pool, a malicious manager could set that token's balance to manipulate the // prices of the other tokens, and then drain the Pool with swaps. The risk of using Asset Managers is therefore // not constrained to the tokens they are managing, but extends to the entire Pool's holdings. // // However, a properly designed Asset Manager smart contract can be safely used for the Pool's benefit, // for example by lending unused tokens out for interest, or using them to participate in voting protocols. // // This concept is unrelated to the IAsset interface. /** * @dev Performs a set of Pool balance operations, which may be either withdrawals, deposits or updates. * * Pool Balance management features batching, which means a single contract call can be used to perform multiple * operations of different kinds, with different Pools and tokens, at once. * * For each operation, the caller must be registered as the Asset Manager for `token` in `poolId`. */ function managePoolBalance(PoolBalanceOp[] memory ops) external; struct PoolBalanceOp { PoolBalanceOpKind kind; bytes32 poolId; IERC20 token; uint256 amount; } /** * Withdrawals decrease the Pool's cash, but increase its managed balance, leaving the total balance unchanged. * * Deposits increase the Pool's cash, but decrease its managed balance, leaving the total balance unchanged. * * Updates don't affect the Pool's cash balance, but because the managed balance changes, it does alter the total. * The external amount can be either increased or decreased by this call (i.e., reporting a gain or a loss). */ enum PoolBalanceOpKind { WITHDRAW, DEPOSIT, UPDATE } /** * @dev Emitted when a Pool's token Asset Manager alters its balance via `managePoolBalance`. */ event PoolBalanceManaged( bytes32 indexed poolId, address indexed assetManager, IERC20 indexed token, int256 cashDelta, int256 managedDelta ); // Protocol Fees // // Some operations cause the Vault to collect tokens in the form of protocol fees, which can then be withdrawn by // permissioned accounts. // // There are two kinds of protocol fees: // // - flash loan fees: charged on all flash loans, as a percentage of the amounts lent. // // - swap fees: a percentage of the fees charged by Pools when performing swaps. For a number of reasons, including // swap gas costs and interface simplicity, protocol swap fees are not charged on each individual swap. Rather, // Pools are expected to keep track of how much they have charged in swap fees, and pay any outstanding debts to the // Vault when they are joined or exited. This prevents users from joining a Pool with unpaid debt, as well as // exiting a Pool in debt without first paying their share. /** * @dev Returns the current protocol fee module. */ function getProtocolFeesCollector() external view returns (IProtocolFeesCollector); /** * @dev Safety mechanism to pause most Vault operations in the event of an emergency - typically detection of an * error in some part of the system. * * The Vault can only be paused during an initial time period, after which pausing is forever disabled. * * While the contract is paused, the following features are disabled: * - depositing and transferring internal balance * - transferring external balance (using the Vault's allowance) * - swaps * - joining Pools * - Asset Manager interactions * * Internal Balance can still be withdrawn, and Pools exited. */ function setPaused(bool paused) external; /** * @dev Returns the Vault's WETH instance. */ function WETH() external view returns (IWETH); // solhint-disable-previous-line func-name-mixedcase }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.7.0; import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/BalancerErrors.sol"; import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/IAuthentication.sol"; /** * @dev Building block for performing access control on external functions. * * This contract is used via the `authenticate` modifier (or the `_authenticateCaller` function), which can be applied * to external functions to only make them callable by authorized accounts. * * Derived contracts must implement the `_canPerform` function, which holds the actual access control logic. */ abstract contract Authentication is IAuthentication { bytes32 private immutable _actionIdDisambiguator; /** * @dev The main purpose of the `actionIdDisambiguator` is to prevent accidental function selector collisions in * multi contract systems. * * There are two main uses for it: * - if the contract is a singleton, any unique identifier can be used to make the associated action identifiers * unique. The contract's own address is a good option. * - if the contract belongs to a family that shares action identifiers for the same functions, an identifier * shared by the entire family (and no other contract) should be used instead. */ constructor(bytes32 actionIdDisambiguator) { _actionIdDisambiguator = actionIdDisambiguator; } /** * @dev Reverts unless the caller is allowed to call this function. Should only be applied to external functions. */ modifier authenticate() { _authenticateCaller(); _; } /** * @dev Reverts unless the caller is allowed to call the entry point function. */ function _authenticateCaller() internal view { bytes32 actionId = getActionId(msg.sig); _require(_canPerform(actionId, msg.sender), Errors.SENDER_NOT_ALLOWED); } function getActionId(bytes4 selector) public view override returns (bytes32) { // Each external function is dynamically assigned an action identifier as the hash of the disambiguator and the // function selector. Disambiguation is necessary to avoid potential collisions in the function selectors of // multiple contracts. return keccak256(abi.encodePacked(_actionIdDisambiguator, selector)); } function _canPerform(bytes32 actionId, address user) internal view virtual returns (bool); }
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.7.0; import "@balancer-labs/v2-interfaces/contracts/vault/IVault.sol"; import "./Authentication.sol"; abstract contract SingletonAuthentication is Authentication { IVault private immutable _vault; // Use the contract's own address to disambiguate action identifiers constructor(IVault vault) Authentication(bytes32(uint256(address(this)))) { _vault = vault; } /** * @notice Returns the Balancer Vault */ function getVault() public view returns (IVault) { return _vault; } /** * @notice Returns the Authorizer */ function getAuthorizer() public view returns (IAuthorizer) { return getVault().getAuthorizer(); } function _canPerform(bytes32 actionId, address account) internal view override returns (bool) { return getAuthorizer().canPerform(actionId, account, address(this)); } function _canPerform( bytes32 actionId, address account, address where ) internal view returns (bool) { return getAuthorizer().canPerform(actionId, account, where); } }
{ "optimizer": { "enabled": true, "runs": 9999 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"contract IVault","name":"vault","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"protocolId","type":"uint256"},{"indexed":false,"internalType":"string","name":"name","type":"string"}],"name":"ProtocolIdRegistered","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"protocolId","type":"uint256"},{"indexed":false,"internalType":"string","name":"name","type":"string"}],"name":"ProtocolIdRenamed","type":"event"},{"inputs":[{"internalType":"bytes4","name":"selector","type":"bytes4"}],"name":"getActionId","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getAuthorizer","outputs":[{"internalType":"contract IAuthorizer","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"protocolId","type":"uint256"}],"name":"getProtocolName","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getVault","outputs":[{"internalType":"contract IVault","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"protocolId","type":"uint256"}],"name":"isValidProtocolId","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"protocolId","type":"uint256"},{"internalType":"string","name":"name","type":"string"}],"name":"registerProtocolId","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"protocolId","type":"uint256"},{"internalType":"string","name":"newName","type":"string"}],"name":"renameProtocolId","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000ba12222222228d8ba445958a75a0704d566bf2c8
-----Decoded View---------------
Arg [0] : vault (address): 0xBA12222222228d8Ba445958a75a0704d566BF2C8
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000ba12222222228d8ba445958a75a0704d566bf2c8
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Multichain Portfolio | 30 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.