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Contract Name:
SonicPriceFeedSolvbtcBbnWithoutRoundsV1
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 10000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
import {PriceFeedWithoutRoundsForMultiFeedAdapter} from "@redstone-finance/on-chain-relayer/contracts/price-feeds/without-rounds/PriceFeedWithoutRoundsForMultiFeedAdapter.sol";
import {IRedstoneAdapter} from "@redstone-finance/on-chain-relayer/contracts/core/IRedstoneAdapter.sol";
contract SonicPriceFeedSolvbtcBbnWithoutRoundsV1 is PriceFeedWithoutRoundsForMultiFeedAdapter {
function description() public view virtual override returns (string memory) {
return "RedStone Price Feed for SolvBTC.BBN";
}
function getDataFeedId() public view virtual override returns (bytes32) {
return bytes32("SolvBTC.BBN");
}
function getPriceFeedAdapter() public view virtual override returns (IRedstoneAdapter) {
return IRedstoneAdapter(0x368eE51E47a594fe1E9908b48228748a30BC7ca4);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface AggregatorV3Interface {
function decimals() external view returns (uint8);
function description() external view returns (string memory);
function version() external view returns (uint256);
function getRoundData(uint80 _roundId)
external
view
returns (
uint80 roundId,
int256 answer,
uint256 startedAt,
uint256 updatedAt,
uint80 answeredInRound
);
function latestRoundData()
external
view
returns (
uint80 roundId,
int256 answer,
uint256 startedAt,
uint256 updatedAt,
uint80 answeredInRound
);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/AddressUpgradeable.sol";
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```solidity
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
*
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
* ====
* Avoid leaving a contract uninitialized.
*
* An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
* contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
* the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() {
* _disableInitializers();
* }
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
* @custom:oz-retyped-from bool
*/
uint8 private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint8 version);
/**
* @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
* `onlyInitializing` functions can be used to initialize parent contracts.
*
* Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
* constructor.
*
* Emits an {Initialized} event.
*/
modifier initializer() {
bool isTopLevelCall = !_initializing;
require(
(isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
"Initializable: contract is already initialized"
);
_initialized = 1;
if (isTopLevelCall) {
_initializing = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
emit Initialized(1);
}
}
/**
* @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
* contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
* used to initialize parent contracts.
*
* A reinitializer may be used after the original initialization step. This is essential to configure modules that
* are added through upgrades and that require initialization.
*
* When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
* cannot be nested. If one is invoked in the context of another, execution will revert.
*
* Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
* a contract, executing them in the right order is up to the developer or operator.
*
* WARNING: setting the version to 255 will prevent any future reinitialization.
*
* Emits an {Initialized} event.
*/
modifier reinitializer(uint8 version) {
require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
_initialized = version;
_initializing = true;
_;
_initializing = false;
emit Initialized(version);
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} and {reinitializer} modifiers, directly or indirectly.
*/
modifier onlyInitializing() {
require(_initializing, "Initializable: contract is not initializing");
_;
}
/**
* @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
* Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
* to any version. It is recommended to use this to lock implementation contracts that are designed to be called
* through proxies.
*
* Emits an {Initialized} event the first time it is successfully executed.
*/
function _disableInitializers() internal virtual {
require(!_initializing, "Initializable: contract is initializing");
if (_initialized != type(uint8).max) {
_initialized = type(uint8).max;
emit Initialized(type(uint8).max);
}
}
/**
* @dev Returns the highest version that has been initialized. See {reinitializer}.
*/
function _getInitializedVersion() internal view returns (uint8) {
return _initialized;
}
/**
* @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
*/
function _isInitializing() internal view returns (bool) {
return _initializing;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.
pragma solidity ^0.8.0;
/**
* @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
* checks.
*
* Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
* easily result in undesired exploitation or bugs, since developers usually
* assume that overflows raise errors. `SafeCast` restores this intuition by
* reverting the transaction when such an operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*
* Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
* all math on `uint256` and `int256` and then downcasting.
*/
library SafeCast {
/**
* @dev Returns the downcasted uint248 from uint256, reverting on
* overflow (when the input is greater than largest uint248).
*
* Counterpart to Solidity's `uint248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*
* _Available since v4.7._
*/
function toUint248(uint256 value) internal pure returns (uint248) {
require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits");
return uint248(value);
}
/**
* @dev Returns the downcasted uint240 from uint256, reverting on
* overflow (when the input is greater than largest uint240).
*
* Counterpart to Solidity's `uint240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*
* _Available since v4.7._
*/
function toUint240(uint256 value) internal pure returns (uint240) {
require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits");
return uint240(value);
}
/**
* @dev Returns the downcasted uint232 from uint256, reverting on
* overflow (when the input is greater than largest uint232).
*
* Counterpart to Solidity's `uint232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*
* _Available since v4.7._
*/
function toUint232(uint256 value) internal pure returns (uint232) {
require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits");
return uint232(value);
}
/**
* @dev Returns the downcasted uint224 from uint256, reverting on
* overflow (when the input is greater than largest uint224).
*
* Counterpart to Solidity's `uint224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*
* _Available since v4.2._
*/
function toUint224(uint256 value) internal pure returns (uint224) {
require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits");
return uint224(value);
}
/**
* @dev Returns the downcasted uint216 from uint256, reverting on
* overflow (when the input is greater than largest uint216).
*
* Counterpart to Solidity's `uint216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*
* _Available since v4.7._
*/
function toUint216(uint256 value) internal pure returns (uint216) {
require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits");
return uint216(value);
}
/**
* @dev Returns the downcasted uint208 from uint256, reverting on
* overflow (when the input is greater than largest uint208).
*
* Counterpart to Solidity's `uint208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*
* _Available since v4.7._
*/
function toUint208(uint256 value) internal pure returns (uint208) {
require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits");
return uint208(value);
}
/**
* @dev Returns the downcasted uint200 from uint256, reverting on
* overflow (when the input is greater than largest uint200).
*
* Counterpart to Solidity's `uint200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*
* _Available since v4.7._
*/
function toUint200(uint256 value) internal pure returns (uint200) {
require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits");
return uint200(value);
}
/**
* @dev Returns the downcasted uint192 from uint256, reverting on
* overflow (when the input is greater than largest uint192).
*
* Counterpart to Solidity's `uint192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*
* _Available since v4.7._
*/
function toUint192(uint256 value) internal pure returns (uint192) {
require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits");
return uint192(value);
}
/**
* @dev Returns the downcasted uint184 from uint256, reverting on
* overflow (when the input is greater than largest uint184).
*
* Counterpart to Solidity's `uint184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*
* _Available since v4.7._
*/
function toUint184(uint256 value) internal pure returns (uint184) {
require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits");
return uint184(value);
}
/**
* @dev Returns the downcasted uint176 from uint256, reverting on
* overflow (when the input is greater than largest uint176).
*
* Counterpart to Solidity's `uint176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*
* _Available since v4.7._
*/
function toUint176(uint256 value) internal pure returns (uint176) {
require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits");
return uint176(value);
}
/**
* @dev Returns the downcasted uint168 from uint256, reverting on
* overflow (when the input is greater than largest uint168).
*
* Counterpart to Solidity's `uint168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*
* _Available since v4.7._
*/
function toUint168(uint256 value) internal pure returns (uint168) {
require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits");
return uint168(value);
}
/**
* @dev Returns the downcasted uint160 from uint256, reverting on
* overflow (when the input is greater than largest uint160).
*
* Counterpart to Solidity's `uint160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*
* _Available since v4.7._
*/
function toUint160(uint256 value) internal pure returns (uint160) {
require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits");
return uint160(value);
}
/**
* @dev Returns the downcasted uint152 from uint256, reverting on
* overflow (when the input is greater than largest uint152).
*
* Counterpart to Solidity's `uint152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*
* _Available since v4.7._
*/
function toUint152(uint256 value) internal pure returns (uint152) {
require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits");
return uint152(value);
}
/**
* @dev Returns the downcasted uint144 from uint256, reverting on
* overflow (when the input is greater than largest uint144).
*
* Counterpart to Solidity's `uint144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*
* _Available since v4.7._
*/
function toUint144(uint256 value) internal pure returns (uint144) {
require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits");
return uint144(value);
}
/**
* @dev Returns the downcasted uint136 from uint256, reverting on
* overflow (when the input is greater than largest uint136).
*
* Counterpart to Solidity's `uint136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*
* _Available since v4.7._
*/
function toUint136(uint256 value) internal pure returns (uint136) {
require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits");
return uint136(value);
}
/**
* @dev Returns the downcasted uint128 from uint256, reverting on
* overflow (when the input is greater than largest uint128).
*
* Counterpart to Solidity's `uint128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*
* _Available since v2.5._
*/
function toUint128(uint256 value) internal pure returns (uint128) {
require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits");
return uint128(value);
}
/**
* @dev Returns the downcasted uint120 from uint256, reverting on
* overflow (when the input is greater than largest uint120).
*
* Counterpart to Solidity's `uint120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*
* _Available since v4.7._
*/
function toUint120(uint256 value) internal pure returns (uint120) {
require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits");
return uint120(value);
}
/**
* @dev Returns the downcasted uint112 from uint256, reverting on
* overflow (when the input is greater than largest uint112).
*
* Counterpart to Solidity's `uint112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*
* _Available since v4.7._
*/
function toUint112(uint256 value) internal pure returns (uint112) {
require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits");
return uint112(value);
}
/**
* @dev Returns the downcasted uint104 from uint256, reverting on
* overflow (when the input is greater than largest uint104).
*
* Counterpart to Solidity's `uint104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*
* _Available since v4.7._
*/
function toUint104(uint256 value) internal pure returns (uint104) {
require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits");
return uint104(value);
}
/**
* @dev Returns the downcasted uint96 from uint256, reverting on
* overflow (when the input is greater than largest uint96).
*
* Counterpart to Solidity's `uint96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*
* _Available since v4.2._
*/
function toUint96(uint256 value) internal pure returns (uint96) {
require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits");
return uint96(value);
}
/**
* @dev Returns the downcasted uint88 from uint256, reverting on
* overflow (when the input is greater than largest uint88).
*
* Counterpart to Solidity's `uint88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*
* _Available since v4.7._
*/
function toUint88(uint256 value) internal pure returns (uint88) {
require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits");
return uint88(value);
}
/**
* @dev Returns the downcasted uint80 from uint256, reverting on
* overflow (when the input is greater than largest uint80).
*
* Counterpart to Solidity's `uint80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*
* _Available since v4.7._
*/
function toUint80(uint256 value) internal pure returns (uint80) {
require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits");
return uint80(value);
}
/**
* @dev Returns the downcasted uint72 from uint256, reverting on
* overflow (when the input is greater than largest uint72).
*
* Counterpart to Solidity's `uint72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*
* _Available since v4.7._
*/
function toUint72(uint256 value) internal pure returns (uint72) {
require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits");
return uint72(value);
}
/**
* @dev Returns the downcasted uint64 from uint256, reverting on
* overflow (when the input is greater than largest uint64).
*
* Counterpart to Solidity's `uint64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*
* _Available since v2.5._
*/
function toUint64(uint256 value) internal pure returns (uint64) {
require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits");
return uint64(value);
}
/**
* @dev Returns the downcasted uint56 from uint256, reverting on
* overflow (when the input is greater than largest uint56).
*
* Counterpart to Solidity's `uint56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*
* _Available since v4.7._
*/
function toUint56(uint256 value) internal pure returns (uint56) {
require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits");
return uint56(value);
}
/**
* @dev Returns the downcasted uint48 from uint256, reverting on
* overflow (when the input is greater than largest uint48).
*
* Counterpart to Solidity's `uint48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*
* _Available since v4.7._
*/
function toUint48(uint256 value) internal pure returns (uint48) {
require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits");
return uint48(value);
}
/**
* @dev Returns the downcasted uint40 from uint256, reverting on
* overflow (when the input is greater than largest uint40).
*
* Counterpart to Solidity's `uint40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*
* _Available since v4.7._
*/
function toUint40(uint256 value) internal pure returns (uint40) {
require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits");
return uint40(value);
}
/**
* @dev Returns the downcasted uint32 from uint256, reverting on
* overflow (when the input is greater than largest uint32).
*
* Counterpart to Solidity's `uint32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*
* _Available since v2.5._
*/
function toUint32(uint256 value) internal pure returns (uint32) {
require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits");
return uint32(value);
}
/**
* @dev Returns the downcasted uint24 from uint256, reverting on
* overflow (when the input is greater than largest uint24).
*
* Counterpart to Solidity's `uint24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*
* _Available since v4.7._
*/
function toUint24(uint256 value) internal pure returns (uint24) {
require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits");
return uint24(value);
}
/**
* @dev Returns the downcasted uint16 from uint256, reverting on
* overflow (when the input is greater than largest uint16).
*
* Counterpart to Solidity's `uint16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*
* _Available since v2.5._
*/
function toUint16(uint256 value) internal pure returns (uint16) {
require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits");
return uint16(value);
}
/**
* @dev Returns the downcasted uint8 from uint256, reverting on
* overflow (when the input is greater than largest uint8).
*
* Counterpart to Solidity's `uint8` operator.
*
* Requirements:
*
* - input must fit into 8 bits
*
* _Available since v2.5._
*/
function toUint8(uint256 value) internal pure returns (uint8) {
require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits");
return uint8(value);
}
/**
* @dev Converts a signed int256 into an unsigned uint256.
*
* Requirements:
*
* - input must be greater than or equal to 0.
*
* _Available since v3.0._
*/
function toUint256(int256 value) internal pure returns (uint256) {
require(value >= 0, "SafeCast: value must be positive");
return uint256(value);
}
/**
* @dev Returns the downcasted int248 from int256, reverting on
* overflow (when the input is less than smallest int248 or
* greater than largest int248).
*
* Counterpart to Solidity's `int248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*
* _Available since v4.7._
*/
function toInt248(int256 value) internal pure returns (int248 downcasted) {
downcasted = int248(value);
require(downcasted == value, "SafeCast: value doesn't fit in 248 bits");
}
/**
* @dev Returns the downcasted int240 from int256, reverting on
* overflow (when the input is less than smallest int240 or
* greater than largest int240).
*
* Counterpart to Solidity's `int240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*
* _Available since v4.7._
*/
function toInt240(int256 value) internal pure returns (int240 downcasted) {
downcasted = int240(value);
require(downcasted == value, "SafeCast: value doesn't fit in 240 bits");
}
/**
* @dev Returns the downcasted int232 from int256, reverting on
* overflow (when the input is less than smallest int232 or
* greater than largest int232).
*
* Counterpart to Solidity's `int232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*
* _Available since v4.7._
*/
function toInt232(int256 value) internal pure returns (int232 downcasted) {
downcasted = int232(value);
require(downcasted == value, "SafeCast: value doesn't fit in 232 bits");
}
/**
* @dev Returns the downcasted int224 from int256, reverting on
* overflow (when the input is less than smallest int224 or
* greater than largest int224).
*
* Counterpart to Solidity's `int224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*
* _Available since v4.7._
*/
function toInt224(int256 value) internal pure returns (int224 downcasted) {
downcasted = int224(value);
require(downcasted == value, "SafeCast: value doesn't fit in 224 bits");
}
/**
* @dev Returns the downcasted int216 from int256, reverting on
* overflow (when the input is less than smallest int216 or
* greater than largest int216).
*
* Counterpart to Solidity's `int216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*
* _Available since v4.7._
*/
function toInt216(int256 value) internal pure returns (int216 downcasted) {
downcasted = int216(value);
require(downcasted == value, "SafeCast: value doesn't fit in 216 bits");
}
/**
* @dev Returns the downcasted int208 from int256, reverting on
* overflow (when the input is less than smallest int208 or
* greater than largest int208).
*
* Counterpart to Solidity's `int208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*
* _Available since v4.7._
*/
function toInt208(int256 value) internal pure returns (int208 downcasted) {
downcasted = int208(value);
require(downcasted == value, "SafeCast: value doesn't fit in 208 bits");
}
/**
* @dev Returns the downcasted int200 from int256, reverting on
* overflow (when the input is less than smallest int200 or
* greater than largest int200).
*
* Counterpart to Solidity's `int200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*
* _Available since v4.7._
*/
function toInt200(int256 value) internal pure returns (int200 downcasted) {
downcasted = int200(value);
require(downcasted == value, "SafeCast: value doesn't fit in 200 bits");
}
/**
* @dev Returns the downcasted int192 from int256, reverting on
* overflow (when the input is less than smallest int192 or
* greater than largest int192).
*
* Counterpart to Solidity's `int192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*
* _Available since v4.7._
*/
function toInt192(int256 value) internal pure returns (int192 downcasted) {
downcasted = int192(value);
require(downcasted == value, "SafeCast: value doesn't fit in 192 bits");
}
/**
* @dev Returns the downcasted int184 from int256, reverting on
* overflow (when the input is less than smallest int184 or
* greater than largest int184).
*
* Counterpart to Solidity's `int184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*
* _Available since v4.7._
*/
function toInt184(int256 value) internal pure returns (int184 downcasted) {
downcasted = int184(value);
require(downcasted == value, "SafeCast: value doesn't fit in 184 bits");
}
/**
* @dev Returns the downcasted int176 from int256, reverting on
* overflow (when the input is less than smallest int176 or
* greater than largest int176).
*
* Counterpart to Solidity's `int176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*
* _Available since v4.7._
*/
function toInt176(int256 value) internal pure returns (int176 downcasted) {
downcasted = int176(value);
require(downcasted == value, "SafeCast: value doesn't fit in 176 bits");
}
/**
* @dev Returns the downcasted int168 from int256, reverting on
* overflow (when the input is less than smallest int168 or
* greater than largest int168).
*
* Counterpart to Solidity's `int168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*
* _Available since v4.7._
*/
function toInt168(int256 value) internal pure returns (int168 downcasted) {
downcasted = int168(value);
require(downcasted == value, "SafeCast: value doesn't fit in 168 bits");
}
/**
* @dev Returns the downcasted int160 from int256, reverting on
* overflow (when the input is less than smallest int160 or
* greater than largest int160).
*
* Counterpart to Solidity's `int160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*
* _Available since v4.7._
*/
function toInt160(int256 value) internal pure returns (int160 downcasted) {
downcasted = int160(value);
require(downcasted == value, "SafeCast: value doesn't fit in 160 bits");
}
/**
* @dev Returns the downcasted int152 from int256, reverting on
* overflow (when the input is less than smallest int152 or
* greater than largest int152).
*
* Counterpart to Solidity's `int152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*
* _Available since v4.7._
*/
function toInt152(int256 value) internal pure returns (int152 downcasted) {
downcasted = int152(value);
require(downcasted == value, "SafeCast: value doesn't fit in 152 bits");
}
/**
* @dev Returns the downcasted int144 from int256, reverting on
* overflow (when the input is less than smallest int144 or
* greater than largest int144).
*
* Counterpart to Solidity's `int144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*
* _Available since v4.7._
*/
function toInt144(int256 value) internal pure returns (int144 downcasted) {
downcasted = int144(value);
require(downcasted == value, "SafeCast: value doesn't fit in 144 bits");
}
/**
* @dev Returns the downcasted int136 from int256, reverting on
* overflow (when the input is less than smallest int136 or
* greater than largest int136).
*
* Counterpart to Solidity's `int136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*
* _Available since v4.7._
*/
function toInt136(int256 value) internal pure returns (int136 downcasted) {
downcasted = int136(value);
require(downcasted == value, "SafeCast: value doesn't fit in 136 bits");
}
/**
* @dev Returns the downcasted int128 from int256, reverting on
* overflow (when the input is less than smallest int128 or
* greater than largest int128).
*
* Counterpart to Solidity's `int128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*
* _Available since v3.1._
*/
function toInt128(int256 value) internal pure returns (int128 downcasted) {
downcasted = int128(value);
require(downcasted == value, "SafeCast: value doesn't fit in 128 bits");
}
/**
* @dev Returns the downcasted int120 from int256, reverting on
* overflow (when the input is less than smallest int120 or
* greater than largest int120).
*
* Counterpart to Solidity's `int120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*
* _Available since v4.7._
*/
function toInt120(int256 value) internal pure returns (int120 downcasted) {
downcasted = int120(value);
require(downcasted == value, "SafeCast: value doesn't fit in 120 bits");
}
/**
* @dev Returns the downcasted int112 from int256, reverting on
* overflow (when the input is less than smallest int112 or
* greater than largest int112).
*
* Counterpart to Solidity's `int112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*
* _Available since v4.7._
*/
function toInt112(int256 value) internal pure returns (int112 downcasted) {
downcasted = int112(value);
require(downcasted == value, "SafeCast: value doesn't fit in 112 bits");
}
/**
* @dev Returns the downcasted int104 from int256, reverting on
* overflow (when the input is less than smallest int104 or
* greater than largest int104).
*
* Counterpart to Solidity's `int104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*
* _Available since v4.7._
*/
function toInt104(int256 value) internal pure returns (int104 downcasted) {
downcasted = int104(value);
require(downcasted == value, "SafeCast: value doesn't fit in 104 bits");
}
/**
* @dev Returns the downcasted int96 from int256, reverting on
* overflow (when the input is less than smallest int96 or
* greater than largest int96).
*
* Counterpart to Solidity's `int96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*
* _Available since v4.7._
*/
function toInt96(int256 value) internal pure returns (int96 downcasted) {
downcasted = int96(value);
require(downcasted == value, "SafeCast: value doesn't fit in 96 bits");
}
/**
* @dev Returns the downcasted int88 from int256, reverting on
* overflow (when the input is less than smallest int88 or
* greater than largest int88).
*
* Counterpart to Solidity's `int88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*
* _Available since v4.7._
*/
function toInt88(int256 value) internal pure returns (int88 downcasted) {
downcasted = int88(value);
require(downcasted == value, "SafeCast: value doesn't fit in 88 bits");
}
/**
* @dev Returns the downcasted int80 from int256, reverting on
* overflow (when the input is less than smallest int80 or
* greater than largest int80).
*
* Counterpart to Solidity's `int80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*
* _Available since v4.7._
*/
function toInt80(int256 value) internal pure returns (int80 downcasted) {
downcasted = int80(value);
require(downcasted == value, "SafeCast: value doesn't fit in 80 bits");
}
/**
* @dev Returns the downcasted int72 from int256, reverting on
* overflow (when the input is less than smallest int72 or
* greater than largest int72).
*
* Counterpart to Solidity's `int72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*
* _Available since v4.7._
*/
function toInt72(int256 value) internal pure returns (int72 downcasted) {
downcasted = int72(value);
require(downcasted == value, "SafeCast: value doesn't fit in 72 bits");
}
/**
* @dev Returns the downcasted int64 from int256, reverting on
* overflow (when the input is less than smallest int64 or
* greater than largest int64).
*
* Counterpart to Solidity's `int64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*
* _Available since v3.1._
*/
function toInt64(int256 value) internal pure returns (int64 downcasted) {
downcasted = int64(value);
require(downcasted == value, "SafeCast: value doesn't fit in 64 bits");
}
/**
* @dev Returns the downcasted int56 from int256, reverting on
* overflow (when the input is less than smallest int56 or
* greater than largest int56).
*
* Counterpart to Solidity's `int56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*
* _Available since v4.7._
*/
function toInt56(int256 value) internal pure returns (int56 downcasted) {
downcasted = int56(value);
require(downcasted == value, "SafeCast: value doesn't fit in 56 bits");
}
/**
* @dev Returns the downcasted int48 from int256, reverting on
* overflow (when the input is less than smallest int48 or
* greater than largest int48).
*
* Counterpart to Solidity's `int48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*
* _Available since v4.7._
*/
function toInt48(int256 value) internal pure returns (int48 downcasted) {
downcasted = int48(value);
require(downcasted == value, "SafeCast: value doesn't fit in 48 bits");
}
/**
* @dev Returns the downcasted int40 from int256, reverting on
* overflow (when the input is less than smallest int40 or
* greater than largest int40).
*
* Counterpart to Solidity's `int40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*
* _Available since v4.7._
*/
function toInt40(int256 value) internal pure returns (int40 downcasted) {
downcasted = int40(value);
require(downcasted == value, "SafeCast: value doesn't fit in 40 bits");
}
/**
* @dev Returns the downcasted int32 from int256, reverting on
* overflow (when the input is less than smallest int32 or
* greater than largest int32).
*
* Counterpart to Solidity's `int32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*
* _Available since v3.1._
*/
function toInt32(int256 value) internal pure returns (int32 downcasted) {
downcasted = int32(value);
require(downcasted == value, "SafeCast: value doesn't fit in 32 bits");
}
/**
* @dev Returns the downcasted int24 from int256, reverting on
* overflow (when the input is less than smallest int24 or
* greater than largest int24).
*
* Counterpart to Solidity's `int24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*
* _Available since v4.7._
*/
function toInt24(int256 value) internal pure returns (int24 downcasted) {
downcasted = int24(value);
require(downcasted == value, "SafeCast: value doesn't fit in 24 bits");
}
/**
* @dev Returns the downcasted int16 from int256, reverting on
* overflow (when the input is less than smallest int16 or
* greater than largest int16).
*
* Counterpart to Solidity's `int16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*
* _Available since v3.1._
*/
function toInt16(int256 value) internal pure returns (int16 downcasted) {
downcasted = int16(value);
require(downcasted == value, "SafeCast: value doesn't fit in 16 bits");
}
/**
* @dev Returns the downcasted int8 from int256, reverting on
* overflow (when the input is less than smallest int8 or
* greater than largest int8).
*
* Counterpart to Solidity's `int8` operator.
*
* Requirements:
*
* - input must fit into 8 bits
*
* _Available since v3.1._
*/
function toInt8(int256 value) internal pure returns (int8 downcasted) {
downcasted = int8(value);
require(downcasted == value, "SafeCast: value doesn't fit in 8 bits");
}
/**
* @dev Converts an unsigned uint256 into a signed int256.
*
* Requirements:
*
* - input must be less than or equal to maxInt256.
*
* _Available since v3.0._
*/
function toInt256(uint256 value) internal pure returns (int256) {
// Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256");
return int256(value);
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
import "./RedstoneConstants.sol";
/**
* @title The base contract with the main logic of data extraction from calldata
* @author The Redstone Oracles team
* @dev This contract was created to reuse the same logic in the RedstoneConsumerBase
* and the ProxyConnector contracts
*/
contract CalldataExtractor is RedstoneConstants {
error DataPackageTimestampMustNotBeZero();
error DataPackageTimestampsMustBeEqual();
error RedstonePayloadMustHaveAtLeastOneDataPackage();
error TooLargeValueByteSize(uint256 valueByteSize);
function extractTimestampsAndAssertAllAreEqual() public pure returns (uint256 extractedTimestamp) {
uint256 calldataNegativeOffset = _extractByteSizeOfUnsignedMetadata();
uint256 dataPackagesCount;
(dataPackagesCount, calldataNegativeOffset) = _extractDataPackagesCountFromCalldata(calldataNegativeOffset);
if (dataPackagesCount == 0) {
revert RedstonePayloadMustHaveAtLeastOneDataPackage();
}
for (uint256 dataPackageIndex = 0; dataPackageIndex < dataPackagesCount; dataPackageIndex++) {
uint256 dataPackageByteSize = _getDataPackageByteSize(calldataNegativeOffset);
// Extracting timestamp for the current data package
uint48 dataPackageTimestamp; // uint48, because timestamp uses 6 bytes
uint256 timestampNegativeOffset = (calldataNegativeOffset + TIMESTAMP_NEGATIVE_OFFSET_IN_DATA_PACKAGE_WITH_STANDARD_SLOT_BS);
uint256 timestampOffset = msg.data.length - timestampNegativeOffset;
assembly {
dataPackageTimestamp := calldataload(timestampOffset)
}
if (dataPackageTimestamp == 0) {
revert DataPackageTimestampMustNotBeZero();
}
if (extractedTimestamp == 0) {
extractedTimestamp = dataPackageTimestamp;
} else if (dataPackageTimestamp != extractedTimestamp) {
revert DataPackageTimestampsMustBeEqual();
}
calldataNegativeOffset += dataPackageByteSize;
}
}
function _getDataPackageByteSize(uint256 calldataNegativeOffset) internal pure returns (uint256) {
(
uint256 dataPointsCount,
uint256 eachDataPointValueByteSize
) = _extractDataPointsDetailsForDataPackage(calldataNegativeOffset);
return
dataPointsCount *
(DATA_POINT_SYMBOL_BS + eachDataPointValueByteSize) +
DATA_PACKAGE_WITHOUT_DATA_POINTS_BS;
}
function _extractByteSizeOfUnsignedMetadata() internal pure returns (uint256) {
// Checking if the calldata ends with the RedStone marker
bool hasValidRedstoneMarker;
assembly {
let calldataLast32Bytes := calldataload(sub(calldatasize(), STANDARD_SLOT_BS))
hasValidRedstoneMarker := eq(
REDSTONE_MARKER_MASK,
and(calldataLast32Bytes, REDSTONE_MARKER_MASK)
)
}
if (!hasValidRedstoneMarker) {
revert CalldataMustHaveValidPayload();
}
// Using uint24, because unsigned metadata byte size number has 3 bytes
uint24 unsignedMetadataByteSize;
if (REDSTONE_MARKER_BS_PLUS_STANDARD_SLOT_BS > msg.data.length) {
revert CalldataOverOrUnderFlow();
}
assembly {
unsignedMetadataByteSize := calldataload(
sub(calldatasize(), REDSTONE_MARKER_BS_PLUS_STANDARD_SLOT_BS)
)
}
uint256 calldataNegativeOffset = unsignedMetadataByteSize
+ UNSIGNED_METADATA_BYTE_SIZE_BS
+ REDSTONE_MARKER_BS;
if (calldataNegativeOffset + DATA_PACKAGES_COUNT_BS > msg.data.length) {
revert IncorrectUnsignedMetadataSize();
}
return calldataNegativeOffset;
}
// We return uint16, because unsigned metadata byte size number has 2 bytes
function _extractDataPackagesCountFromCalldata(uint256 calldataNegativeOffset)
internal
pure
returns (uint16 dataPackagesCount, uint256 nextCalldataNegativeOffset)
{
uint256 calldataNegativeOffsetWithStandardSlot = calldataNegativeOffset + STANDARD_SLOT_BS;
if (calldataNegativeOffsetWithStandardSlot > msg.data.length) {
revert CalldataOverOrUnderFlow();
}
assembly {
dataPackagesCount := calldataload(
sub(calldatasize(), calldataNegativeOffsetWithStandardSlot)
)
}
return (dataPackagesCount, calldataNegativeOffset + DATA_PACKAGES_COUNT_BS);
}
function _extractDataPointValueAndDataFeedId(
uint256 dataPointNegativeOffset,
uint256 dataPointValueByteSize
) internal pure virtual returns (bytes32 dataPointDataFeedId, uint256 dataPointValue) {
uint256 dataPointCalldataOffset = msg.data.length - dataPointNegativeOffset;
assembly {
dataPointDataFeedId := calldataload(dataPointCalldataOffset)
dataPointValue := calldataload(add(dataPointCalldataOffset, DATA_POINT_SYMBOL_BS))
}
if (dataPointValueByteSize >= 33) {
revert TooLargeValueByteSize(dataPointValueByteSize);
}
unchecked {
dataPointValue = dataPointValue >> (32 - dataPointValueByteSize) * 8;
}
}
function _extractDataPointsDetailsForDataPackage(uint256 calldataNegativeOffsetForDataPackage)
internal
pure
returns (uint256 dataPointsCount, uint256 eachDataPointValueByteSize)
{
// Using uint24, because data points count byte size number has 3 bytes
uint24 dataPointsCount_;
// Using uint32, because data point value byte size has 4 bytes
uint32 eachDataPointValueByteSize_;
// Extract data points count
uint256 calldataOffset = msg.data.length - (calldataNegativeOffsetForDataPackage + SIG_BS + STANDARD_SLOT_BS);
assembly {
dataPointsCount_ := calldataload(calldataOffset)
}
// Extract each data point value size
calldataOffset = calldataOffset - DATA_POINTS_COUNT_BS;
assembly {
eachDataPointValueByteSize_ := calldataload(calldataOffset)
}
// Prepare returned values
dataPointsCount = dataPointsCount_;
eachDataPointValueByteSize = eachDataPointValueByteSize_;
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
/**
* @title The base contract with helpful constants
* @author The Redstone Oracles team
* @dev It mainly contains redstone-related values, which improve readability
* of other contracts (e.g. CalldataExtractor and RedstoneConsumerBase)
*/
contract RedstoneConstants {
// === Abbreviations ===
// BS - Bytes size
// PTR - Pointer (memory location)
// SIG - Signature
// Solidity and YUL constants
uint256 internal constant STANDARD_SLOT_BS = 32;
uint256 internal constant FREE_MEMORY_PTR = 0x40;
uint256 internal constant BYTES_ARR_LEN_VAR_BS = 32;
uint256 internal constant REVERT_MSG_OFFSET = 68; // Revert message structure described here: https://ethereum.stackexchange.com/a/66173/106364
uint256 internal constant STRING_ERR_MESSAGE_MASK = 0x08c379a000000000000000000000000000000000000000000000000000000000;
// RedStone protocol consts
uint256 internal constant SIG_BS = 65;
uint256 internal constant TIMESTAMP_BS = 6;
uint256 internal constant DATA_PACKAGES_COUNT_BS = 2;
uint256 internal constant DATA_POINTS_COUNT_BS = 3;
uint256 internal constant DATA_POINT_VALUE_BYTE_SIZE_BS = 4;
uint256 internal constant DATA_POINT_SYMBOL_BS = 32;
uint256 internal constant DEFAULT_DATA_POINT_VALUE_BS = 32;
uint256 internal constant UNSIGNED_METADATA_BYTE_SIZE_BS = 3;
uint256 internal constant REDSTONE_MARKER_BS = 9; // byte size of 0x000002ed57011e0000
uint256 internal constant REDSTONE_MARKER_MASK = 0x0000000000000000000000000000000000000000000000000002ed57011e0000;
// Derived values (based on consts)
uint256 internal constant TIMESTAMP_NEGATIVE_OFFSET_IN_DATA_PACKAGE_WITH_STANDARD_SLOT_BS = 104; // SIG_BS + DATA_POINTS_COUNT_BS + DATA_POINT_VALUE_BYTE_SIZE_BS + STANDARD_SLOT_BS
uint256 internal constant DATA_PACKAGE_WITHOUT_DATA_POINTS_BS = 78; // DATA_POINT_VALUE_BYTE_SIZE_BS + TIMESTAMP_BS + DATA_POINTS_COUNT_BS + SIG_BS
uint256 internal constant DATA_PACKAGE_WITHOUT_DATA_POINTS_AND_SIG_BS = 13; // DATA_POINT_VALUE_BYTE_SIZE_BS + TIMESTAMP_BS + DATA_POINTS_COUNT_BS
uint256 internal constant REDSTONE_MARKER_BS_PLUS_STANDARD_SLOT_BS = 41; // REDSTONE_MARKER_BS + STANDARD_SLOT_BS
// Error messages
error CalldataOverOrUnderFlow();
error IncorrectUnsignedMetadataSize();
error InsufficientNumberOfUniqueSigners(uint256 receivedSignersCount, uint256 requiredSignersCount);
error EachSignerMustProvideTheSameValue();
error EmptyCalldataPointersArr();
error InvalidCalldataPointer();
error CalldataMustHaveValidPayload();
error SignerNotAuthorised(address receivedSigner);
error DataTimestampCannotBeZero();
error TimestampsMustBeEqual();
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
import "./RedstoneConstants.sol";
import "./RedstoneDefaultsLib.sol";
import "./CalldataExtractor.sol";
import "../libs/BitmapLib.sol";
import "../libs/SignatureLib.sol";
/**
* @title The base contract with the main Redstone logic
* @author The Redstone Oracles team
* @dev Do not use this contract directly in consumer contracts, take a
* look at `RedstoneConsumerNumericBase` and `RedstoneConsumerBytesBase` instead
*/
abstract contract RedstoneConsumerBase is CalldataExtractor {
error GetDataServiceIdNotImplemented();
/* ========== VIRTUAL FUNCTIONS (MAY BE OVERRIDDEN IN CHILD CONTRACTS) ========== */
/**
* @dev This function must be implemented by the child consumer contract.
* It should return dataServiceId which DataServiceWrapper will use if not provided explicitly .
* If not overridden, value will always have to be provided explicitly in DataServiceWrapper.
* @return dataServiceId being consumed by contract
*/
function getDataServiceId() public view virtual returns (string memory) {
revert GetDataServiceIdNotImplemented();
}
/**
* @dev This function must be implemented by the child consumer contract.
* It should return a unique index for a given signer address if the signer
* is authorised, otherwise it should revert
* @param receivedSigner The address of a signer, recovered from ECDSA signature
* @return Unique index for a signer in the range [0..255]
*/
function getAuthorisedSignerIndex(address receivedSigner) public view virtual returns (uint8);
/**
* @dev This function may be overridden by the child consumer contract.
* It should validate the timestamp against the current time (block.timestamp)
* It should revert with a helpful message if the timestamp is not valid
* @param receivedTimestampMilliseconds Timestamp extracted from calldata
*/
function validateTimestamp(uint256 receivedTimestampMilliseconds) public view virtual {
RedstoneDefaultsLib.validateTimestamp(receivedTimestampMilliseconds);
}
/**
* @dev This function must be implemented by the child consumer contract.
* @return The minimum required value of unique authorised signers
*/
function getUniqueSignersThreshold() public view virtual returns (uint8);
/**
* @dev This function may be overridden by the child consumer contract.
* It should aggregate values from different signers to a single uint value.
* By default, it calculates the median value
* @param values An array of uint256 values from different signers
* @return Result of the aggregation in the form of a single number
*/
function aggregateValues(uint256[] memory values) public view virtual returns (uint256) {
return RedstoneDefaultsLib.aggregateValues(values);
}
/* ========== FUNCTIONS WITH IMPLEMENTATION (CAN NOT BE OVERRIDDEN) ========== */
/**
* @dev This is an internal helpful function for secure extraction oracle values
* from the tx calldata. Security is achieved by signatures verification, timestamp
* validation, and aggregating values from different authorised signers into a
* single numeric value. If any of the required conditions (e.g. packages with different
* timestamps or insufficient number of authorised signers) do not match, the function
* will revert.
*
* Note! You should not call this function in a consumer contract. You can use
* `getOracleNumericValuesFromTxMsg` or `getOracleNumericValueFromTxMsg` instead.
*
* @param dataFeedIds An array of unique data feed identifiers
* @return An array of the extracted and verified oracle values in the same order
* as they are requested in dataFeedIds array
* @return dataPackagesTimestamp timestamp equal for all data packages
*/
function _securelyExtractOracleValuesAndTimestampFromTxMsg(bytes32[] memory dataFeedIds)
internal
view
returns (uint256[] memory, uint256 dataPackagesTimestamp)
{
// Initializing helpful variables and allocating memory
uint256[] memory uniqueSignerCountForDataFeedIds = new uint256[](dataFeedIds.length);
uint256[] memory signersBitmapForDataFeedIds = new uint256[](dataFeedIds.length);
uint256[][] memory valuesForDataFeeds = new uint256[][](dataFeedIds.length);
for (uint256 i = 0; i < dataFeedIds.length;) {
// The line below is commented because newly allocated arrays are filled with zeros
// But we left it for better readability
// signersBitmapForDataFeedIds[i] = 0; // <- setting to an empty bitmap
valuesForDataFeeds[i] = new uint256[](getUniqueSignersThreshold());
unchecked {
i++;
}
}
// Extracting the number of data packages from calldata
uint256 calldataNegativeOffset = _extractByteSizeOfUnsignedMetadata();
uint256 dataPackagesCount;
(dataPackagesCount, calldataNegativeOffset) = _extractDataPackagesCountFromCalldata(calldataNegativeOffset);
// Saving current free memory pointer
uint256 freeMemPtr;
assembly {
freeMemPtr := mload(FREE_MEMORY_PTR)
}
// Data packages extraction in a loop
for (uint256 dataPackageIndex = 0; dataPackageIndex < dataPackagesCount;) {
// Extract data package details and update calldata offset
uint256 dataPackageTimestamp;
(calldataNegativeOffset, dataPackageTimestamp) = _extractDataPackage(
dataFeedIds,
uniqueSignerCountForDataFeedIds,
signersBitmapForDataFeedIds,
valuesForDataFeeds,
calldataNegativeOffset
);
if (dataPackageTimestamp == 0) {
revert DataTimestampCannotBeZero();
}
if (dataPackageTimestamp != dataPackagesTimestamp) {
if (dataPackagesTimestamp == 0) {
// Setting dataPackagesTimestamp first time
dataPackagesTimestamp = dataPackageTimestamp;
} else {
revert TimestampsMustBeEqual();
}
}
// Resetting the memory pointer to the initial "safe" value
// We add STANDARD_SLOT_BS (32 bytes) to account for potential allocation
// of the dataPackageIndex variable, which may or may not be stored in memory
assembly {
mstore(FREE_MEMORY_PTR, add(freeMemPtr, STANDARD_SLOT_BS))
}
unchecked {
dataPackageIndex++;
}
}
// Validating numbers of unique signers and calculating aggregated values for each dataFeedId
return (_getAggregatedValues(valuesForDataFeeds, uniqueSignerCountForDataFeedIds), dataPackagesTimestamp);
}
/**
* @dev This is a private helpful function, which extracts data for a data package based
* on the given negative calldata offset, verifies them, and in the case of successful
* verification updates the corresponding data package values in memory
*
* @param dataFeedIds an array of unique data feed identifiers
* @param uniqueSignerCountForDataFeedIds an array with the numbers of unique signers
* for each data feed
* @param signersBitmapForDataFeedIds an array of signer bitmaps for data feeds
* @param valuesForDataFeeds 2-dimensional array, valuesForDataFeeds[i][j] contains
* j-th value for the i-th data feed
* @param calldataNegativeOffset negative calldata offset for the given data package
*
* @return nextCalldataNegativeOffset negative calldata offset for the next data package
* @return dataPackageTimestamp data package timestamp
*/
function _extractDataPackage(
bytes32[] memory dataFeedIds,
uint256[] memory uniqueSignerCountForDataFeedIds,
uint256[] memory signersBitmapForDataFeedIds,
uint256[][] memory valuesForDataFeeds,
uint256 calldataNegativeOffset
) private view returns (uint256 nextCalldataNegativeOffset, uint256 dataPackageTimestamp) {
uint256 signerIndex;
(
uint256 dataPointsCount,
uint256 eachDataPointValueByteSize
) = _extractDataPointsDetailsForDataPackage(calldataNegativeOffset);
// We use scopes to resolve problem with too deep stack
{
address signerAddress;
bytes32 signedHash;
bytes memory signedMessage;
uint256 signedMessageBytesCount;
uint48 extractedTimestamp;
signedMessageBytesCount = dataPointsCount * (eachDataPointValueByteSize + DATA_POINT_SYMBOL_BS)
+ DATA_PACKAGE_WITHOUT_DATA_POINTS_AND_SIG_BS; //DATA_POINT_VALUE_BYTE_SIZE_BS + TIMESTAMP_BS + DATA_POINTS_COUNT_BS
uint256 timestampCalldataOffset = msg.data.length -
(calldataNegativeOffset + TIMESTAMP_NEGATIVE_OFFSET_IN_DATA_PACKAGE_WITH_STANDARD_SLOT_BS);
uint256 signedMessageCalldataOffset = msg.data.length -
(calldataNegativeOffset + SIG_BS + signedMessageBytesCount);
assembly {
// Extracting the signed message
signedMessage := extractBytesFromCalldata(
signedMessageCalldataOffset,
signedMessageBytesCount
)
// Hashing the signed message
signedHash := keccak256(add(signedMessage, BYTES_ARR_LEN_VAR_BS), signedMessageBytesCount)
// Extracting timestamp
extractedTimestamp := calldataload(timestampCalldataOffset)
function initByteArray(bytesCount) -> ptr {
ptr := mload(FREE_MEMORY_PTR)
mstore(ptr, bytesCount)
ptr := add(ptr, BYTES_ARR_LEN_VAR_BS)
mstore(FREE_MEMORY_PTR, add(ptr, bytesCount))
}
function extractBytesFromCalldata(offset, bytesCount) -> extractedBytes {
let extractedBytesStartPtr := initByteArray(bytesCount)
calldatacopy(
extractedBytesStartPtr,
offset,
bytesCount
)
extractedBytes := sub(extractedBytesStartPtr, BYTES_ARR_LEN_VAR_BS)
}
}
dataPackageTimestamp = extractedTimestamp;
// Verifying the off-chain signature against on-chain hashed data
signerAddress = SignatureLib.recoverSignerAddress(
signedHash,
calldataNegativeOffset + SIG_BS
);
signerIndex = getAuthorisedSignerIndex(signerAddress);
}
// Updating helpful arrays
{
calldataNegativeOffset = calldataNegativeOffset + DATA_PACKAGE_WITHOUT_DATA_POINTS_BS;
bytes32 dataPointDataFeedId;
uint256 dataPointValue;
for (uint256 dataPointIndex = 0; dataPointIndex < dataPointsCount;) {
calldataNegativeOffset = calldataNegativeOffset + eachDataPointValueByteSize + DATA_POINT_SYMBOL_BS;
// Extracting data feed id and value for the current data point
(dataPointDataFeedId, dataPointValue) = _extractDataPointValueAndDataFeedId(
calldataNegativeOffset,
eachDataPointValueByteSize
);
for (
uint256 dataFeedIdIndex = 0;
dataFeedIdIndex < dataFeedIds.length;
) {
if (dataPointDataFeedId == dataFeedIds[dataFeedIdIndex]) {
uint256 bitmapSignersForDataFeedId = signersBitmapForDataFeedIds[dataFeedIdIndex];
if (
!BitmapLib.getBitFromBitmap(bitmapSignersForDataFeedId, signerIndex) && /* current signer was not counted for current dataFeedId */
uniqueSignerCountForDataFeedIds[dataFeedIdIndex] < getUniqueSignersThreshold()
) {
// Add new value
valuesForDataFeeds[dataFeedIdIndex][uniqueSignerCountForDataFeedIds[dataFeedIdIndex]] = dataPointValue;
// Increase unique signer counter
uniqueSignerCountForDataFeedIds[dataFeedIdIndex]++;
// Update signers bitmap
signersBitmapForDataFeedIds[dataFeedIdIndex] = BitmapLib.setBitInBitmap(
bitmapSignersForDataFeedId,
signerIndex
);
}
// Breaking, as there couldn't be several indexes for the same feed ID
break;
}
unchecked {
dataFeedIdIndex++;
}
}
unchecked {
dataPointIndex++;
}
}
}
return (calldataNegativeOffset, dataPackageTimestamp);
}
/**
* @dev This is a private helpful function, which aggregates values from different
* authorised signers for the given arrays of values for each data feed
*
* @param valuesForDataFeeds 2-dimensional array, valuesForDataFeeds[i][j] contains
* j-th value for the i-th data feed
* @param uniqueSignerCountForDataFeedIds an array with the numbers of unique signers
* for each data feed
*
* @return An array of the aggregated values
*/
function _getAggregatedValues(
uint256[][] memory valuesForDataFeeds,
uint256[] memory uniqueSignerCountForDataFeedIds
) private view returns (uint256[] memory) {
uint256[] memory aggregatedValues = new uint256[](valuesForDataFeeds.length);
uint256 uniqueSignersThreshold = getUniqueSignersThreshold();
for (uint256 dataFeedIndex = 0; dataFeedIndex < valuesForDataFeeds.length; dataFeedIndex++) {
if (uniqueSignerCountForDataFeedIds[dataFeedIndex] < uniqueSignersThreshold) {
revert InsufficientNumberOfUniqueSigners(
uniqueSignerCountForDataFeedIds[dataFeedIndex],
uniqueSignersThreshold);
}
uint256 aggregatedValueForDataFeedId = aggregateValues(valuesForDataFeeds[dataFeedIndex]);
aggregatedValues[dataFeedIndex] = aggregatedValueForDataFeedId;
}
return aggregatedValues;
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
import "./RedstoneConsumerBase.sol";
/**
* @title The base contract for Redstone consumers' contracts that allows to
* securely calculate numeric redstone oracle values
* @author The Redstone Oracles team
* @dev This contract can extend other contracts to allow them
* securely fetch Redstone oracle data from transactions calldata
*/
abstract contract RedstoneConsumerNumericBase is RedstoneConsumerBase {
/**
* @dev This function can be used in a consumer contract to securely extract an
* oracle value for a given data feed id. Security is achieved by
* signatures verification, timestamp validation, and aggregating values
* from different authorised signers into a single numeric value. If any of the
* required conditions do not match, the function will revert.
* Note! This function expects that tx calldata contains redstone payload in the end
* Learn more about redstone payload here: https://github.com/redstone-finance/redstone-oracles-monorepo/tree/main/packages/evm-connector#readme
* @param dataFeedId bytes32 value that uniquely identifies the data feed
* @return Extracted and verified numeric oracle value for the given data feed id
*/
function getOracleNumericValueFromTxMsg(bytes32 dataFeedId)
internal
view
virtual
returns (uint256)
{
bytes32[] memory dataFeedIds = new bytes32[](1);
dataFeedIds[0] = dataFeedId;
return getOracleNumericValuesFromTxMsg(dataFeedIds)[0];
}
/**
* @dev This function can be used in a consumer contract to securely extract several
* numeric oracle values for a given array of data feed ids. Security is achieved by
* signatures verification, timestamp validation, and aggregating values
* from different authorised signers into a single numeric value. If any of the
* required conditions do not match, the function will revert.
* Note! This function expects that tx calldata contains redstone payload in the end
* Learn more about redstone payload here: https://github.com/redstone-finance/redstone-oracles-monorepo/tree/main/packages/evm-connector#readme
* @param dataFeedIds An array of unique data feed identifiers
* @return An array of the extracted and verified oracle values in the same order
* as they are requested in the dataFeedIds array
*/
function getOracleNumericValuesFromTxMsg(bytes32[] memory dataFeedIds)
internal
view
virtual
returns (uint256[] memory)
{
(uint256[] memory values, uint256 timestamp) = _securelyExtractOracleValuesAndTimestampFromTxMsg(dataFeedIds);
validateTimestamp(timestamp);
return values;
}
/**
* @dev This function can be used in a consumer contract to securely extract several
* numeric oracle values for a given array of data feed ids. Security is achieved by
* signatures verification and aggregating values from different authorised signers
* into a single numeric value. If any of the required conditions do not match,
* the function will revert.
* Note! This function returns the timestamp of the packages (it requires it to be
* the same for all), but does not validate this timestamp.
* Note! This function expects that tx calldata contains redstone payload in the end
* Learn more about redstone payload here: https://github.com/redstone-finance/redstone-oracles-monorepo/tree/main/packages/evm-connector#readme
* @param dataFeedIds An array of unique data feed identifiers
* @return An array of the extracted and verified oracle values in the same order
* as they are requested in the dataFeedIds array and data packages timestamp
*/
function getOracleNumericValuesAndTimestampFromTxMsg(bytes32[] memory dataFeedIds)
internal
view
virtual
returns (uint256[] memory, uint256)
{
return _securelyExtractOracleValuesAndTimestampFromTxMsg(dataFeedIds);
}
/**
* @dev This function works similarly to the `getOracleNumericValuesFromTxMsg` with the
* only difference that it allows to request oracle data for an array of data feeds
* that may contain duplicates
*
* @param dataFeedIdsWithDuplicates An array of data feed identifiers (duplicates are allowed)
* @return An array of the extracted and verified oracle values in the same order
* as they are requested in the dataFeedIdsWithDuplicates array
*/
function getOracleNumericValuesWithDuplicatesFromTxMsg(bytes32[] memory dataFeedIdsWithDuplicates) internal view returns (uint256[] memory) {
// Building an array without duplicates
bytes32[] memory dataFeedIdsWithoutDuplicates = new bytes32[](dataFeedIdsWithDuplicates.length);
bool alreadyIncluded;
uint256 uniqueDataFeedIdsCount = 0;
for (uint256 indexWithDup = 0; indexWithDup < dataFeedIdsWithDuplicates.length; indexWithDup++) {
// Checking if current element is already included in `dataFeedIdsWithoutDuplicates`
alreadyIncluded = false;
for (uint256 indexWithoutDup = 0; indexWithoutDup < uniqueDataFeedIdsCount; indexWithoutDup++) {
if (dataFeedIdsWithoutDuplicates[indexWithoutDup] == dataFeedIdsWithDuplicates[indexWithDup]) {
alreadyIncluded = true;
break;
}
}
// Adding if not included
if (!alreadyIncluded) {
dataFeedIdsWithoutDuplicates[uniqueDataFeedIdsCount] = dataFeedIdsWithDuplicates[indexWithDup];
uniqueDataFeedIdsCount++;
}
}
// Overriding dataFeedIdsWithoutDuplicates.length
// Equivalent to: dataFeedIdsWithoutDuplicates.length = uniqueDataFeedIdsCount;
assembly {
mstore(dataFeedIdsWithoutDuplicates, uniqueDataFeedIdsCount)
}
// Requesting oracle values (without duplicates)
(uint256[] memory valuesWithoutDuplicates, uint256 timestamp) = _securelyExtractOracleValuesAndTimestampFromTxMsg(dataFeedIdsWithoutDuplicates);
validateTimestamp(timestamp);
// Preparing result values array
uint256[] memory valuesWithDuplicates = new uint256[](dataFeedIdsWithDuplicates.length);
for (uint256 indexWithDup = 0; indexWithDup < dataFeedIdsWithDuplicates.length; indexWithDup++) {
for (uint256 indexWithoutDup = 0; indexWithoutDup < dataFeedIdsWithoutDuplicates.length; indexWithoutDup++) {
if (dataFeedIdsWithDuplicates[indexWithDup] == dataFeedIdsWithoutDuplicates[indexWithoutDup]) {
valuesWithDuplicates[indexWithDup] = valuesWithoutDuplicates[indexWithoutDup];
break;
}
}
}
return valuesWithDuplicates;
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
import "../libs/NumericArrayLib.sol";
/**
* @title Default implementations of virtual redstone consumer base functions
* @author The Redstone Oracles team
*/
library RedstoneDefaultsLib {
uint256 constant DEFAULT_MAX_DATA_TIMESTAMP_DELAY_SECONDS = 3 minutes;
uint256 constant DEFAULT_MAX_DATA_TIMESTAMP_AHEAD_SECONDS = 1 minutes;
error TimestampFromTooLongFuture(uint256 receivedTimestampSeconds, uint256 blockTimestamp);
error TimestampIsTooOld(uint256 receivedTimestampSeconds, uint256 blockTimestamp);
function validateTimestamp(uint256 receivedTimestampMilliseconds) internal view {
// Getting data timestamp from future seems quite unlikely
// But we've already spent too much time with different cases
// Where block.timestamp was less than dataPackage.timestamp.
// Some blockchains may case this problem as well.
// That's why we add MAX_BLOCK_TIMESTAMP_DELAY
// and allow data "from future" but with a small delay
uint256 receivedTimestampSeconds = receivedTimestampMilliseconds / 1000;
if (block.timestamp < receivedTimestampSeconds) {
if ((receivedTimestampSeconds - block.timestamp) > DEFAULT_MAX_DATA_TIMESTAMP_AHEAD_SECONDS) {
revert TimestampFromTooLongFuture(receivedTimestampSeconds, block.timestamp);
}
} else if ((block.timestamp - receivedTimestampSeconds) > DEFAULT_MAX_DATA_TIMESTAMP_DELAY_SECONDS) {
revert TimestampIsTooOld(receivedTimestampSeconds, block.timestamp);
}
}
function aggregateValues(uint256[] memory values) internal pure returns (uint256) {
return NumericArrayLib.pickMedian(values);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
library BitmapLib {
function setBitInBitmap(uint256 bitmap, uint256 bitIndex) internal pure returns (uint256) {
return bitmap | (1 << bitIndex);
}
function getBitFromBitmap(uint256 bitmap, uint256 bitIndex) internal pure returns (bool) {
uint256 bitAtIndex = bitmap & (1 << bitIndex);
return bitAtIndex > 0;
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
library NumericArrayLib {
// This function sort array in memory using bubble sort algorithm,
// which performs even better than quick sort for small arrays
uint256 constant BYTES_ARR_LEN_VAR_BS = 32;
uint256 constant UINT256_VALUE_BS = 32;
error CanNotPickMedianOfEmptyArray();
// This function modifies the array
function pickMedian(uint256[] memory arr) internal pure returns (uint256) {
if (arr.length == 2) {
return (arr[0] + arr[1]) / 2;
}
if (arr.length == 0) {
revert CanNotPickMedianOfEmptyArray();
}
sort(arr);
uint256 middleIndex = arr.length / 2;
if (arr.length % 2 == 0) {
uint256 sum = arr[middleIndex - 1] + arr[middleIndex];
return sum / 2;
} else {
return arr[middleIndex];
}
}
function sort(uint256[] memory arr) internal pure {
assembly {
let arrLength := mload(arr)
let valuesPtr := add(arr, BYTES_ARR_LEN_VAR_BS)
let endPtr := add(valuesPtr, mul(arrLength, UINT256_VALUE_BS))
for {
let arrIPtr := valuesPtr
} lt(arrIPtr, endPtr) {
arrIPtr := add(arrIPtr, UINT256_VALUE_BS) // arrIPtr += 32
} {
for {
let arrJPtr := valuesPtr
} lt(arrJPtr, arrIPtr) {
arrJPtr := add(arrJPtr, UINT256_VALUE_BS) // arrJPtr += 32
} {
let arrI := mload(arrIPtr)
let arrJ := mload(arrJPtr)
if lt(arrI, arrJ) {
mstore(arrIPtr, arrJ)
mstore(arrJPtr, arrI)
}
}
}
}
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
library SignatureLib {
uint256 constant ECDSA_SIG_R_BS = 32;
uint256 constant ECDSA_SIG_S_BS = 32;
error InvalidSignature(bytes32 signedHash);
function recoverSignerAddress(bytes32 signedHash, uint256 signatureCalldataNegativeOffset)
internal
pure
returns (address signerAddress)
{
bytes32 r;
bytes32 s;
uint8 v;
assembly {
let signatureCalldataStartPos := sub(calldatasize(), signatureCalldataNegativeOffset)
r := calldataload(signatureCalldataStartPos)
signatureCalldataStartPos := add(signatureCalldataStartPos, ECDSA_SIG_R_BS)
s := calldataload(signatureCalldataStartPos)
signatureCalldataStartPos := add(signatureCalldataStartPos, ECDSA_SIG_S_BS)
v := byte(0, calldataload(signatureCalldataStartPos)) // last byte of the signature memory array
}
signerAddress = ecrecover(signedHash, v, r, s);
if (signerAddress == address(0)) {
revert InvalidSignature(signedHash);
}
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
/**
* @title Interface of RedStone adapter
* @author The Redstone Oracles team
*/
interface IRedstoneAdapter {
/**
* @notice Updates values of all data feeds supported by the Adapter contract
* @dev This function requires an attached redstone payload to the transaction calldata.
* It also requires each data package to have exactly the same timestamp
* @param dataPackagesTimestamp Timestamp of each signed data package in the redstone payload
*/
function updateDataFeedsValues(uint256 dataPackagesTimestamp) external;
/**
* @notice Returns the latest properly reported value of the data feed
* @param dataFeedId The identifier of the requested data feed
* @return value The latest value of the given data feed
*/
function getValueForDataFeed(bytes32 dataFeedId) external view returns (uint256);
/**
* @notice Returns the latest properly reported values for several data feeds
* @param requestedDataFeedIds The array of identifiers for the requested feeds
* @return values Values of the requested data feeds in the corresponding order
*/
function getValuesForDataFeeds(bytes32[] memory requestedDataFeedIds) external view returns (uint256[] memory);
/**
* @notice Returns data timestamp from the latest update
* @dev It's virtual, because its implementation can sometimes be different
* (e.g. SinglePriceFeedAdapterWithClearing)
* @return lastDataTimestamp Timestamp of the latest reported data packages
*/
function getDataTimestampFromLatestUpdate() external view returns (uint256 lastDataTimestamp);
/**
* @notice Returns block timestamp of the latest successful update
* @return blockTimestamp The block timestamp of the latest successful update
*/
function getBlockTimestampFromLatestUpdate() external view returns (uint256 blockTimestamp);
/**
* @notice Returns timestamps of the latest successful update
* @return dataTimestamp timestamp (usually in milliseconds) from the signed data packages
* @return blockTimestamp timestamp of the block when the update has happened
*/
function getTimestampsFromLatestUpdate() external view returns (uint128 dataTimestamp, uint128 blockTimestamp);
/**
* @notice Returns identifiers of all data feeds supported by the Adapter contract
* @return An array of data feed identifiers
*/
function getDataFeedIds() external view returns (bytes32[] memory);
/**
* @notice Returns the unique index of the given data feed
* @param dataFeedId The data feed identifier
* @return index The index of the data feed
*/
function getDataFeedIndex(bytes32 dataFeedId) external view returns (uint256);
/**
* @notice Returns minimal required interval (usually in seconds) between subsequent updates
* @return interval The required interval between updates
*/
function getMinIntervalBetweenUpdates() external view returns (uint256);
/**
* @notice Reverts if the proposed timestamp of data packages it too old or too new
* comparing to the block.timestamp. It also ensures that the proposed timestamp is newer
* Then the one from the previous update
* @param dataPackagesTimestamp The proposed timestamp (usually in milliseconds)
*/
function validateProposedDataPackagesTimestamp(uint256 dataPackagesTimestamp) external view;
/**
* @notice Reverts if the updater is not authorised
* @dev This function should revert if msg.sender is not allowed to update data feed values
* @param updater The address of the proposed updater
*/
function requireAuthorisedUpdater(address updater) external view;
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
interface ILToken {
function underlying() external view returns (address);
}// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.17;
interface IPriceCalculator {
struct ReferenceData {
uint256 lastData;
uint256 lastUpdated;
}
function priceOf(address asset) external view returns (uint256);
function pricesOf(
address[] memory assets
) external view returns (uint256[] memory);
function priceOfETH() external view returns (uint256);
function getUnderlyingPrice(address gToken) external view returns (uint256);
function getUnderlyingPrices(
address[] memory gTokens
) external view returns (uint256[] memory);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
interface IMultiFeedAdapter {
function updateDataFeedsValuesPartial(bytes32[] memory dataFeedsIds) external;
function getLastUpdateDetails(bytes32 dataFeedId) external view returns (uint256 lastDataTimestamp, uint256 lastBlockTimestamp, uint256 lastValue);
function getLastUpdateDetailsUnsafe(bytes32 dataFeedId) external view returns (uint256 lastDataTimestamp, uint256 lastBlockTimestamp, uint256 lastValue);
function getValuesForDataFeeds(bytes32[] memory requestedDataFeedIds) external view returns (uint256[] memory values);
function getValueForDataFeed(bytes32 dataFeedId) external view returns (uint256 dataFeedValue);
function getDataTimestampFromLatestUpdate(bytes32 dataFeedId) external view returns (uint256 lastDataTimestamp);
function getBlockTimestampFromLatestUpdate(bytes32 dataFeedId) external view returns (uint256 blockTimestamp);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
import {AggregatorV3Interface} from "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";
import {IPriceFeedLegacy} from "./IPriceFeedLegacy.sol";
/**
* @title Complete price feed interface
* @author The Redstone Oracles team
* @dev All required public functions that must be implemented
* by each Redstone PriceFeed contract
*/
interface IPriceFeed is IPriceFeedLegacy, AggregatorV3Interface {
/**
* @notice Returns data feed identifier for the PriceFeed contract
* @return dataFeedId The identifier of the data feed
*/
function getDataFeedId() external view returns (bytes32);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
/**
* @title Interface with the old Chainlink Price Feed functions
* @author The Redstone Oracles team
* @dev There are some projects (e.g. gmx-contracts) that still
* rely on some legacy functions
*/
interface IPriceFeedLegacy {
/**
* @notice Old Chainlink function for getting the number of latest round
* @return latestRound The number of the latest update round
*/
function latestRound() external view returns (uint80);
/**
* @notice Old Chainlink function for getting the latest successfully reported value
* @return latestAnswer The latest successfully reported value
*/
function latestAnswer() external view returns (int256);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
import {Initializable} from "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import {IRedstoneAdapter} from "../core/IRedstoneAdapter.sol";
import {IPriceFeed} from "./interfaces/IPriceFeed.sol";
/**
* @title Main logic of the price feed contract
* @author The Redstone Oracles team
* @dev Implementation of common functions for the PriceFeed contract
* that queries data from the specified PriceFeedAdapter
*
* It can be used by projects that have already implemented with Chainlink-like
* price feeds and would like to minimise changes in their existing codebase.
*
* If you are flexible, it's much better (and cheaper in terms of gas) to query
* the PriceFeedAdapter contract directly
*/
abstract contract PriceFeedBase is IPriceFeed, Initializable {
uint256 internal constant INT256_MAX = uint256(type(int256).max);
error UnsafeUintToIntConversion(uint256 value);
/**
* @dev Helpful function for upgradable contracts
*/
function initialize() public virtual initializer {
// We don't have storage variables, but we keep this function
// Because it is used for contract setup in upgradable contracts
}
/**
* @notice Returns data feed identifier for the PriceFeed contract
* @return dataFeedId The identifier of the data feed
*/
function getDataFeedId() public view virtual returns (bytes32);
/**
* @notice Returns the address of the price feed adapter
* @return address The address of the price feed adapter
*/
function getPriceFeedAdapter() public view virtual returns (IRedstoneAdapter);
/**
* @notice Returns the number of decimals for the price feed
* @dev By default, RedStone uses 8 decimals for data feeds
* @return decimals The number of decimals in the price feed values
*/
function decimals() public virtual pure override returns (uint8) {
return 8;
}
/**
* @notice Description of the Price Feed
* @return description
*/
function description() public view virtual override returns (string memory) {
return "Redstone Price Feed";
}
/**
* @notice Version of the Price Feed
* @dev Currently it has no specific motivation and was added
* only to be compatible with the Chainlink interface
* @return version
*/
function version() public virtual pure override returns (uint256) {
return 1;
}
/**
* @notice Returns details of the latest successful update round
* @dev It uses few helpful functions to abstract logic of getting
* latest round id and value
* @return roundId The number of the latest round
* @return answer The latest reported value
* @return startedAt Block timestamp when the latest successful round started
* @return updatedAt Block timestamp of the latest successful round
* @return answeredInRound The number of the latest round
*/
function latestRoundData()
public
view
override
virtual
returns (
uint80 roundId,
int256 answer,
uint256 startedAt,
uint256 updatedAt,
uint80 answeredInRound
)
{
roundId = latestRound();
answer = latestAnswer();
uint256 blockTimestamp = getPriceFeedAdapter().getBlockTimestampFromLatestUpdate();
// These values are equal after chainlink’s OCR update
startedAt = blockTimestamp;
updatedAt = blockTimestamp;
// We want to be compatible with Chainlink's interface
// And in our case the roundId is always equal to answeredInRound
answeredInRound = roundId;
}
/**
* @notice Old Chainlink function for getting the latest successfully reported value
* @return latestAnswer The latest successfully reported value
*/
function latestAnswer() public virtual view returns (int256) {
bytes32 dataFeedId = getDataFeedId();
uint256 uintAnswer = getPriceFeedAdapter().getValueForDataFeed(dataFeedId);
if (uintAnswer > INT256_MAX) {
revert UnsafeUintToIntConversion(uintAnswer);
}
return int256(uintAnswer);
}
/**
* @notice Old Chainlink function for getting the number of latest round
* @return latestRound The number of the latest update round
*/
function latestRound() public view virtual returns (uint80);
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
import {RedstoneConsumerNumericBase, RedstoneDefaultsLib} from "@redstone-finance/evm-connector/contracts/core/RedstoneConsumerNumericBase.sol";
import {IMultiFeedAdapter} from "../interfaces/IMultiFeedAdapter.sol";
import {IPriceCalculator} from "../../custom-integrations/layerbank/IPriceCalculator.sol";
import {ILToken} from "../../custom-integrations/layerbank/ILToken.sol";
/**
* @title MultiFeedAdapterWithoutRounds
* @author The Redstone Oracles team
* @dev This abstract contract serves as an adapter for multiple data feeds, facilitating
* the updating and retrieval of oracle data values independently.
*
* Key details about the contract:
* - Values for data feeds can be updated using the `updateDataFeedsValuesPartial` function
* - Unlike the previous version (RedstoneAdapterBase), this adapter allows updating any set of data feeds,
* with each update being made independently.
* - Updates are highly independent. Each data feed update is attempted separately, ensuring maximum possible
* updates without reverting the entire transaction if some of them fail. Both successful value updates and
* update skips due to failed validation are represented in corresponding events.
* - Efficient storage usage: Related timestamps and values are packed into a single 32-byte slot when possible.
* If a value exceeds the slot capacity, it is stored in the next slot, with one bool prop (isValueBigger) indicating the storage method used.
* - All data packages in the Redstone payload must have the same timestamp. Invalid timestamps (too old or too new) will cause transaction reversion.
* - The contract includes a built-in IPriceCalculator interface used by LayerBank and other projects
*/
abstract contract MultiFeedAdapterWithoutRounds is RedstoneConsumerNumericBase, IMultiFeedAdapter, IPriceCalculator {
bytes32 internal constant DATA_FEEDS_STORAGE_LOCATION = 0x5e9fb4cb0eb3c2583734d3394f30bb14b241acb9b3a034f7e7ba1a62db4370f1; // keccak256("RedStone.MultiFeedAdapterWithoutRounds.dataFeeds");
bytes32 internal constant ETH_DATA_FEED_ID = bytes32("ETH");
uint256 internal constant MAX_DATA_STALENESS = 30 hours;
uint256 internal constant DEFAULT_DECIMAL_SCALER_LAYERBANK = 1e10;
error DataTimestampTooLarge(uint256 dataTimestamp);
error BlockTimestampTooLarge(uint256 blockTimestamp);
error InvalidLastUpdateDetails(bytes32 dataFeedId, uint256 lastDataTimestamp, uint256 lastBlockTimestamp, uint256 lastValue);
event ValueUpdate(uint256 value, bytes32 dataFeedId, uint256 updatedAt);
event UpdateSkipDueToBlockTimestamp(bytes32 dataFeedId);
event UpdateSkipDueToDataTimestamp(bytes32 dataFeedId);
event UpdateSkipDueToInvalidValue(bytes32 dataFeedId);
// This struct uses exactly one storage slot (32 bytes)
struct DataFeedDetails {
uint48 dataTimestamp;
uint48 blockTimestamp;
uint152 value;
bool isValueBigger;
}
struct DataFeedDetailsWithOptionalBigValue {
DataFeedDetails details;
uint256 biggerValue;
}
// This struct is used only for returning values
struct LastUpdateDetails {
uint256 dataTimestamp;
uint256 blockTimestamp;
uint256 value;
}
struct DataFeedsStorage {
mapping(bytes32 => DataFeedDetailsWithOptionalBigValue) _dataFeeds;
}
/// This function allows to update any set of data feeds
function updateDataFeedsValuesPartial(bytes32[] memory dataFeedsIds) public {
(uint256[] memory oracleValues, uint256 extractedDataTimestamp) = getOracleNumericValuesAndTimestampFromTxMsg(dataFeedsIds);
// Revert if data timestamp doesn't fit within the allowed block timestamp window
validateTimestamp(extractedDataTimestamp);
// Revert if data or block timestamp do not fit into 48 bits reserved in storage for timestamps
if (extractedDataTimestamp > type(uint48).max) {
revert DataTimestampTooLarge(extractedDataTimestamp);
}
if (block.timestamp > type(uint48).max) {
revert BlockTimestampTooLarge(block.timestamp);
}
// The logic below can fail only in the case when gas limit reached
for (uint256 i = 0; i < dataFeedsIds.length;) {
// Note, each update is independent. It means that we are trying to update everything we can.
// And skip the rest (emitting corresponding events)
_tryToUpdateDataFeed(dataFeedsIds[i], oracleValues[i], extractedDataTimestamp);
unchecked { i++; } // reduces gas costs
}
}
function _tryToUpdateDataFeed(bytes32 dataFeedId, uint256 value, uint256 dataTimestamp) internal virtual {
(uint256 lastDataTimestamp, uint256 lastBlockTimestamp, uint256 lastValue) = getLastUpdateDetailsUnsafe(dataFeedId);
if (!_validateBlockTimestamp(lastBlockTimestamp)) {
emit UpdateSkipDueToBlockTimestamp(dataFeedId);
return;
}
if (!_validateDataTimestamp(dataTimestamp, lastDataTimestamp)) {
emit UpdateSkipDueToDataTimestamp(dataFeedId);
return;
}
if (!_validateValueBeforeSave(dataFeedId, value, lastValue)) {
emit UpdateSkipDueToInvalidValue(dataFeedId);
return;
}
_saveNewUpdateDetails(dataFeedId, value, dataTimestamp);
_emitEventAfterValueUpdate(dataFeedId, value);
}
function _saveNewUpdateDetails(bytes32 dataFeedId, uint256 newValue, uint256 dataTimestamp) internal {
DataFeedDetailsWithOptionalBigValue storage dataFeed = _getDataFeedsStorage()._dataFeeds[dataFeedId];
bool isValueBigger = newValue > type(uint152).max;
// We can safely cast timestamps here, because we checked timestamp values in the `updateDataFeedsValuesPartial` function
dataFeed.details = DataFeedDetails({
dataTimestamp: uint48(dataTimestamp),
blockTimestamp: uint48(block.timestamp),
value: uint152(newValue), // we can store anything here is isValueBigger == true, but it's slightly cheaper to always store the same value
isValueBigger: isValueBigger
});
if (isValueBigger) {
dataFeed.biggerValue = newValue;
}
}
function getLastUpdateDetails(bytes32 dataFeedId) public view virtual returns (uint256 lastDataTimestamp, uint256 lastBlockTimestamp, uint256 lastValue) {
(lastDataTimestamp, lastBlockTimestamp, lastValue) = getLastUpdateDetailsUnsafe(dataFeedId);
if (!_validateLastUpdateDetailsOnRead(dataFeedId, lastDataTimestamp, lastBlockTimestamp, lastValue)) {
revert InvalidLastUpdateDetails(dataFeedId, lastDataTimestamp, lastBlockTimestamp, lastValue);
}
}
function getLastUpdateDetailsUnsafe(bytes32 dataFeedId) public view virtual returns (uint256 lastDataTimestamp, uint256 lastBlockTimestamp, uint256 lastValue) {
DataFeedDetailsWithOptionalBigValue storage dataFeed = _getDataFeedsStorage()._dataFeeds[dataFeedId];
lastDataTimestamp = dataFeed.details.dataTimestamp;
lastBlockTimestamp = dataFeed.details.blockTimestamp;
if (dataFeed.details.isValueBigger) {
lastValue = dataFeed.biggerValue;
} else {
lastValue = dataFeed.details.value;
}
}
function _getDataFeedsStorage() private pure returns (DataFeedsStorage storage $) {
assembly {
$.slot := DATA_FEEDS_STORAGE_LOCATION
}
}
/// This function can be used to implement time-based whitelisting (e.g. whitelisting for only X seconds after the latest update)
/// Important! This function should not revert, it should only return bool result of the validation
function _validateBlockTimestamp(uint256 lastBlockTimestamp) internal view virtual returns (bool) {
// In the default implementation we just check if the block number is higher
// To ensure max 1 update for a given data feed in a block
return block.timestamp > lastBlockTimestamp;
}
/// Important! This function should not revert, it should only return bool result of the validation
function _validateDataTimestamp(uint256 proposedDataTimestamp, uint256 lastDataTimestamp) internal view virtual returns (bool) {
return proposedDataTimestamp > lastDataTimestamp;
}
/// Important! This function should not revert, it should only return bool result of the validation
/// It can be overridden to handle more specific logic in future
function _validateValueBeforeSave(bytes32 /* dataFeedId */, uint256 proposedValue, uint256 /* lastValue */) internal view virtual returns (bool) {
return proposedValue > 0;
}
/// This function can be overridden (e.g. value validation and staleness check)
/// We've added dataFeedId for being able to implement custom validation per feed
function _validateLastUpdateDetailsOnRead(bytes32 /* dataFeedId */, uint256 /* lastDataTimestamp */, uint256 lastBlockTimestamp, uint256 lastValue) internal view virtual returns (bool) {
return lastValue > 0 && lastBlockTimestamp + MAX_DATA_STALENESS > block.timestamp;
}
/// Important! This function should not revert, it should only emit an event
/// It is a separate function, so that we can specify custom events for specific data feeds
function _emitEventAfterValueUpdate(bytes32 dataFeedId, uint256 newValue) internal virtual {
emit ValueUpdate(newValue, dataFeedId, block.timestamp);
}
////////////////////////////////////////////////////
/////////// Functions for relayers below ///////////
////////////////////////////////////////////////////
function getLastUpdateDetailsUnsafeForMany(bytes32[] memory dataFeedIds) external view returns (LastUpdateDetails[] memory detailsForFeeds) {
detailsForFeeds = new LastUpdateDetails[](dataFeedIds.length);
for (uint256 i = 0; i < dataFeedIds.length;) {
(detailsForFeeds[i].dataTimestamp, detailsForFeeds[i].blockTimestamp, detailsForFeeds[i].value) = getLastUpdateDetailsUnsafe(dataFeedIds[i]);
unchecked { i++; } // reduces gas costs
}
}
function getValuesForDataFeeds(bytes32[] memory requestedDataFeedIds) external view returns (uint256[] memory values) {
values = new uint256[](requestedDataFeedIds.length);
for (uint256 i = 0; i < requestedDataFeedIds.length;) {
values[i] = getValueForDataFeed(requestedDataFeedIds[i]);
unchecked { i++; } // reduces gas costs
}
}
function getValueForDataFeed(bytes32 dataFeedId) public view virtual returns (uint256 dataFeedValue) {
(,, dataFeedValue) = getLastUpdateDetails(dataFeedId);
}
function getDataTimestampFromLatestUpdate(bytes32 dataFeedId) external view virtual returns (uint256 lastDataTimestamp) {
(lastDataTimestamp, ,) = getLastUpdateDetails(dataFeedId);
}
function getBlockTimestampFromLatestUpdate(bytes32 dataFeedId) external view virtual returns (uint256 blockTimestamp) {
(, blockTimestamp, ) = getLastUpdateDetails(dataFeedId);
}
///////////////////////////////////////////////////////
//////////// LayerBank interface functions ////////////
///////////////////////////////////////////////////////
/// We can connect manager contract here or implement it directly here
/// By default, users will be able to use data feed identifiers (casted to addresses) in layerbank functions
function getDataFeedIdForAsset(address asset) public view virtual returns(bytes32) {
return bytes32(uint256(uint160(asset)));
}
function convertDecimals(bytes32 /* dataFeedId */, uint256 valueFromRedstonePayload) public view virtual returns (uint256) {
return valueFromRedstonePayload * DEFAULT_DECIMAL_SCALER_LAYERBANK;
}
function getUnderlyingAsset(address gToken) public view virtual returns(address) {
return ILToken(gToken).underlying();
}
function priceOf(address asset) public view virtual returns (uint256) {
bytes32 dataFeedId = getDataFeedIdForAsset(asset);
uint256 latestValue = getValueForDataFeed(dataFeedId);
return convertDecimals(dataFeedId, latestValue);
}
function priceOfETH() public view virtual returns (uint256) {
return convertDecimals(ETH_DATA_FEED_ID, getValueForDataFeed(ETH_DATA_FEED_ID));
}
function pricesOf(
address[] memory assets
) external view returns (uint256[] memory values) {
values = new uint256[](assets.length);
for (uint256 i = 0; i < assets.length;) {
values[i] = priceOf(assets[i]);
unchecked { i++; } // reduces gas costs
}
}
function getUnderlyingPrice(address gToken) public view returns (uint256) {
return priceOf(getUnderlyingAsset(gToken));
}
function getUnderlyingPrices(
address[] memory gTokens
) public view returns (uint256[] memory values) {
values = new uint256[](gTokens.length);
for (uint256 i = 0; i < gTokens.length;) {
values[i] = getUnderlyingPrice(gTokens[i]);
unchecked { i++; } // reduces gas costs
}
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
import {PriceFeedBase} from "../PriceFeedBase.sol";
/**
* @title Implementation of a price feed contract without rounds support
* @author The Redstone Oracles team
* @dev This contract is abstract. The actual contract instance
* must implement the following functions:
* - getDataFeedId
* - getPriceFeedAdapter
*/
abstract contract PriceFeedWithoutRounds is PriceFeedBase {
uint80 constant DEFAULT_ROUND = 1;
error GetRoundDataCanBeOnlyCalledWithLatestRound(uint80 requestedRoundId);
/**
* @dev We always return 1, since we do not support rounds in this contract
*/
function latestRound() public pure override returns (uint80) {
return DEFAULT_ROUND;
}
/**
* @dev There are possible use cases that some contracts don't need values from old rounds
* but still rely on `getRoundData` or `latestRound` functions
*/
function getRoundData(uint80 requestedRoundId) public view override returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound) {
if (requestedRoundId != latestRound()) {
revert GetRoundDataCanBeOnlyCalledWithLatestRound(requestedRoundId);
}
return latestRoundData();
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;
import {MultiFeedAdapterWithoutRounds} from "./MultiFeedAdapterWithoutRounds.sol";
import {PriceFeedWithoutRounds} from "./PriceFeedWithoutRounds.sol";
import {SafeCast} from "@openzeppelin/contracts/utils/math/SafeCast.sol";
abstract contract PriceFeedWithoutRoundsForMultiFeedAdapter is PriceFeedWithoutRounds {
function latestRoundData()
public
view
override
virtual
returns (
uint80 roundId,
int256 answer,
uint256 startedAt,
uint256 updatedAt,
uint80 answeredInRound
)
{
roundId = latestRound();
MultiFeedAdapterWithoutRounds multiAdapter = MultiFeedAdapterWithoutRounds(address(getPriceFeedAdapter()));
(/* uint256 lastDataTimestamp */, uint256 lastBlockTimestamp, uint256 lastValue) = multiAdapter.getLastUpdateDetails(getDataFeedId());
answer = SafeCast.toInt256(lastValue);
// These values are equal after chainlink’s OCR update
startedAt = lastBlockTimestamp;
updatedAt = lastBlockTimestamp;
// We want to be compatible with Chainlink's interface
// And in our case the roundId is always equal to answeredInRound
answeredInRound = roundId;
}
}{
"optimizer": {
"enabled": true,
"runs": 10000
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"libraries": {}
}Contract Security Audit
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[{"inputs":[{"internalType":"uint80","name":"requestedRoundId","type":"uint80"}],"name":"GetRoundDataCanBeOnlyCalledWithLatestRound","type":"error"},{"inputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"name":"UnsafeUintToIntConversion","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"description","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getDataFeedId","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getPriceFeedAdapter","outputs":[{"internalType":"contract IRedstoneAdapter","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint80","name":"requestedRoundId","type":"uint80"}],"name":"getRoundData","outputs":[{"internalType":"uint80","name":"roundId","type":"uint80"},{"internalType":"int256","name":"answer","type":"int256"},{"internalType":"uint256","name":"startedAt","type":"uint256"},{"internalType":"uint256","name":"updatedAt","type":"uint256"},{"internalType":"uint80","name":"answeredInRound","type":"uint80"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"latestAnswer","outputs":[{"internalType":"int256","name":"","type":"int256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestRound","outputs":[{"internalType":"uint80","name":"","type":"uint80"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"latestRoundData","outputs":[{"internalType":"uint80","name":"roundId","type":"uint80"},{"internalType":"int256","name":"answer","type":"int256"},{"internalType":"uint256","name":"startedAt","type":"uint256"},{"internalType":"uint256","name":"updatedAt","type":"uint256"},{"internalType":"uint80","name":"answeredInRound","type":"uint80"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"}]Contract Creation Code
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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.