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Clean up

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writer 2024-10-15 12:26:21 +09:00
parent c2d0866191
commit db37d209ab
58 changed files with 4663 additions and 1043 deletions
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70
advanced_knowledge/proxies/minimum_proxy.sol Normal file
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
contract MinimalProxy {
function clone(address target) external returns (address result) {
// convert address to 20 bytes
bytes20 targetBytes = bytes20(target);
// actual code //
// 3d602d80600a3d3981f3363d3d373d3d3d363d73bebebebebebebebebebebebebebebebebebebebe5af43d82803e903d91602b57fd5bf3
// creation code //
// copy runtime code into memory and return it
// 3d602d80600a3d3981f3
// runtime code //
// code to delegatecall to address
// 363d3d373d3d3d363d73 address 5af43d82803e903d91602b57fd5bf3
assembly {
/*
reads the 32 bytes of memory starting at pointer stored in 0x40
In solidity, the 0x40 slot in memory is special: it contains the "free memory pointer"
which points to the end of the currently allocated memory.
*/
let clone := mload(0x40)
// store 32 bytes to memory starting at "clone"
mstore(
clone,
0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000
)
/*
| 20 bytes |
0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000
^
pointer
*/
// store 32 bytes to memory starting at "clone" + 20 bytes
// 0x14 = 20
mstore(add(clone, 0x14), targetBytes)
/*
| 20 bytes | 20 bytes |
0x3d602d80600a3d3981f3363d3d373d3d3d363d73bebebebebebebebebebebebebebebebebebebebe
^
pointer
*/
// store 32 bytes to memory starting at "clone" + 40 bytes
// 0x28 = 40
mstore(
add(clone, 0x28),
0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
)
/*
| 20 bytes | 20 bytes | 15 bytes |
0x3d602d80600a3d3981f3363d3d373d3d3d363d73bebebebebebebebebebebebebebebebebebebebe5af43d82803e903d91602b57fd5bf3
*/
// create new contract
// send 0 Ether
// code starts at pointer stored in "clone"
// code size 0x37 (55 bytes)
result := create(0, clone, 0x37)
}
}
}