git3-contract/contracts/ethstorage/v2/StorageHelperV2.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "./Memory.sol";
import "./StorageSlotFactory.sol";

library StorageHelperV2 {
    // StorageSlotSelfDestructableV2 compiled via solc 0.8.7 optimized 200
    bytes internal constant STORAGE_SLOT_CODE_V2 =
        hex"6080604052348015600f57600080fd5b506004361060285760003560e01c80632b68b9c614602d575b600080fd5b60336035565b005b336001600160a01b037f0000000000000000000000000000000000000000000000000000000000000000161460965760405162461bcd60e51b81526020600482015260036024820152624e464f60e81b604482015260640160405180910390fd5b7f00000000000000000000000000000000000000000000000000000000000000006001600160a01b0316fffea2646970667358221220154417754813d1989858c876ab2ded2ba1aa380679fff7a4c8faea076ba020e664736f6c63430008070033";
    uint256 internal constant OWNER_ADDR_OFF = 64;
    uint256 internal constant USER_ADDR_OFF = 152;

    // StorageSlotFactoryFromInput compiled via solc 0.8.7 optimized 200 + STORAGE_SLOT_CODE
    bytes internal constant FACTORY_CODE =
        hex"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";
    uint256 internal constant FACTORY_SIZE_OFF = 305;
    uint256 internal constant FACTORY_ADDR_OFF0 = 305 + 32 + OWNER_ADDR_OFF;
    uint256 internal constant FACTORY_ADDR_OFF1 = 305 + 32 + USER_ADDR_OFF;

    function putRawFromCalldata(
        bytes calldata data,
        uint256 value
    ) internal returns (address) {
        bytes memory bytecode = bytes.concat(STORAGE_SLOT_CODE_V2, data);
        address userAddr = msg.sender;
        {
            // revise the owner to the contract (so that it is destructable)
            uint256 off = OWNER_ADDR_OFF + 0x20;
            assembly {
                mstore(add(bytecode, off), address())
            }
            off = USER_ADDR_OFF + 0x20;
            assembly {
                mstore(add(bytecode, off), userAddr)
            }
        }

        StorageSlotFactoryFromInput c = new StorageSlotFactoryFromInput{
            value: value
        }(bytecode);
        return address(c);
    }

    function putRaw(
        bytes memory data,
        uint256 value
    ) internal returns (address) {
        // create the new contract code with the data
        bytes memory bytecode = STORAGE_SLOT_CODE_V2;
        uint256 bytecodeLen = bytecode.length;
        uint256 newSize = bytecode.length + data.length;
        assembly {
            // in-place resize of bytecode bytes
            // note that this must be done when bytecode is the last allocated object by solidity.
            mstore(bytecode, newSize)
            // notify solidity about the memory size increase, must be 32-bytes aligned
            mstore(
                0x40,
                add(bytecode, and(add(add(newSize, 0x20), 0x1f), not(0x1f)))
            )
        }
        // append data to self-destruct byte code
        Memory.copy(
            Memory.dataPtr(data),
            Memory.dataPtr(bytecode) + bytecodeLen,
            data.length
        );
        address userAddr = msg.sender;
        {
            // revise the owner to the contract (so that it is destructable)
            uint256 off = OWNER_ADDR_OFF + 0x20;
            assembly {
                mstore(add(bytecode, off), address())
            }
            off = USER_ADDR_OFF + 0x20;
            assembly {
                mstore(add(bytecode, off), userAddr)
            }
        }

        StorageSlotFactoryFromInput c = new StorageSlotFactoryFromInput{
            value: value
        }(bytecode);
        return address(c);
    }

    function putRaw2(
        bytes32 key,
        bytes memory data,
        uint256 value
    ) internal returns (address) {
        // create the new contract code with the data
        bytes memory bytecode = FACTORY_CODE;
        uint256 bytecodeLen = bytecode.length;
        uint256 newSize = bytecode.length + data.length;
        assembly {
            // in-place resize of bytecode bytes
            // note that this must be done when bytecode is the last allocated object by solidity.
            mstore(bytecode, newSize)
            // notify solidity about the memory size increase, must be 32-bytes aligned
            mstore(
                0x40,
                add(bytecode, and(add(add(newSize, 0x20), 0x1f), not(0x1f)))
            )
        }
        // append data to self-destruct byte code
        Memory.copy(
            Memory.dataPtr(data),
            Memory.dataPtr(bytecode) + bytecodeLen,
            data.length
        );
        {
            // revise the size of calldata
            uint256 calldataSize = STORAGE_SLOT_CODE_V2.length + data.length;
            uint256 off = FACTORY_SIZE_OFF + 0x20;
            assembly {
                mstore(add(bytecode, off), calldataSize)
            }
        }
        {
            // revise the owner to the contract (so that it is destructable)
            uint256 off = FACTORY_ADDR_OFF0 + 0x20;
            assembly {
                mstore(add(bytecode, off), address())
            }
            off = FACTORY_ADDR_OFF1 + 0x20;
            assembly {
                mstore(add(bytecode, off), address())
            }
        }

        address addr;
        assembly {
            addr := create2(
                value,
                add(bytecode, 0x20), // data offset
                mload(bytecode), // size
                key
            )

            if iszero(extcodesize(addr)) {
                revert(0, 0)
            }
        }
        return addr;
    }

    function sizeRaw(address addr) internal view returns (uint256, bool) {
        if (addr == address(0x0)) {
            return (0, false);
        }
        uint256 codeSize;
        uint256 off = STORAGE_SLOT_CODE_V2.length;
        assembly {
            codeSize := extcodesize(addr)
        }
        if (codeSize < off) {
            return (0, false);
        }

        return (codeSize - off, true);
    }

    function getRaw(address addr) internal view returns (bytes memory, bool) {
        (uint256 dataSize, bool found) = sizeRaw(addr);

        if (!found) {
            return (new bytes(0), false);
        }

        // copy the data without the "code"
        bytes memory data = new bytes(dataSize);
        uint256 off = STORAGE_SLOT_CODE_V2.length;
        assembly {
            // retrieve data size
            extcodecopy(addr, add(data, 0x20), off, dataSize)
        }
        return (data, true);
    }

    function getRawAt(
        address addr,
        uint256 memoryPtr
    ) internal view returns (uint256, bool) {
        (uint256 dataSize, bool found) = sizeRaw(addr);

        if (!found) {
            return (0, false);
        }

        uint256 off = STORAGE_SLOT_CODE_V2.length;
        assembly {
            // retrieve data size
            extcodecopy(addr, memoryPtr, off, dataSize)
        }
        return (dataSize, true);
    }

    function returnBytesInplace(bytes memory content) internal pure {
        // equal to return abi.encode(content)
        uint256 size = content.length + 0x40; // pointer + size
        size = (size + 0x20 + 0x1f) & ~uint256(0x1f);
        assembly {
            // (DATA CORRUPTION): the caller method must be "external returns (bytes)", cannot be public!
            mstore(sub(content, 0x20), 0x20)
            return(sub(content, 0x20), size)
        }
    }

    function calculateValueForData(
        uint256 datalen,
        uint256 chunkSize,
        uint256 codeStakingPerChunk
    ) internal pure returns (uint256) {
        return
            ((datalen + STORAGE_SLOT_CODE_V2.length - 1) / chunkSize) *
            codeStakingPerChunk;
    }

    function storageSlotCodeLength() internal pure returns (uint256) {
        return STORAGE_SLOT_CODE_V2.length;
    }
}