Contract Name:
CollectionBatchBuyCrowdfund
Contract Source Code:
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../tokens/IERC721.sol";
import "../party/Party.sol";
import "../utils/Implementation.sol";
import "../utils/LibSafeERC721.sol";
import "../utils/LibRawResult.sol";
import "../globals/IGlobals.sol";
import "../gatekeepers/IGateKeeper.sol";
import "./Crowdfund.sol";
// Base for BuyCrowdfund and CollectionBuyCrowdfund
abstract contract BuyCrowdfundBase is Crowdfund {
using LibSafeERC721 for IERC721;
using LibSafeCast for uint256;
struct BuyCrowdfundBaseOptions {
// The name of the crowdfund.
// This will also carry over to the governance party.
string name;
// The token symbol for both the crowdfund and the governance NFTs.
string symbol;
// Customization preset ID to use for the crowdfund and governance NFTs.
uint256 customizationPresetId;
// How long this crowdfund has to buy the NFT, in seconds.
uint40 duration;
// Maximum amount this crowdfund will pay for the NFT.
uint96 maximumPrice;
// An address that receives an extra share of the final voting power
// when the party transitions into governance.
address payable splitRecipient;
// What percentage (in bps) of the final total voting power `splitRecipient`
// receives.
uint16 splitBps;
// If ETH is attached during deployment, it will be interpreted
// as a contribution. This is who gets credit for that contribution.
address initialContributor;
// If there is an initial contribution, this is who they will delegate their
// voting power to when the crowdfund transitions to governance.
address initialDelegate;
// Minimum amount of ETH that can be contributed to this crowdfund per address.
uint96 minContribution;
// Maximum amount of ETH that can be contributed to this crowdfund per address.
uint96 maxContribution;
// The gatekeeper contract to use (if non-null) to restrict who can
// contribute to this crowdfund.
IGateKeeper gateKeeper;
// The gatekeeper contract to use (if non-null).
bytes12 gateKeeperId;
// Governance options.
FixedGovernanceOpts governanceOpts;
}
event Won(Party party, IERC721[] tokens, uint256[] tokenIds, uint256 settledPrice);
event Lost();
error MaximumPriceError(uint96 callValue, uint96 maximumPrice);
error NoContributionsError();
error CallProhibitedError(address target, bytes data);
error FailedToBuyNFTError(IERC721 token, uint256 tokenId);
/// @notice When this crowdfund expires.
uint40 public expiry;
/// @notice Maximum amount this crowdfund will pay for the NFT.
uint96 public maximumPrice;
/// @notice What the NFT was actually bought for.
uint96 public settledPrice;
// Set the `Globals` contract.
constructor(IGlobals globals) Crowdfund(globals) {}
// Initialize storage for proxy contracts.
function _initialize(BuyCrowdfundBaseOptions memory opts) internal {
expiry = uint40(opts.duration + block.timestamp);
maximumPrice = opts.maximumPrice;
Crowdfund._initialize(
CrowdfundOptions({
name: opts.name,
symbol: opts.symbol,
customizationPresetId: opts.customizationPresetId,
splitRecipient: opts.splitRecipient,
splitBps: opts.splitBps,
initialContributor: opts.initialContributor,
initialDelegate: opts.initialDelegate,
minContribution: opts.minContribution,
maxContribution: opts.maxContribution,
gateKeeper: opts.gateKeeper,
gateKeeperId: opts.gateKeeperId,
governanceOpts: opts.governanceOpts
})
);
}
// Execute arbitrary calldata to perform a buy, creating a party
// if it successfully buys the NFT.
function _buy(
IERC721 token,
uint256 tokenId,
address payable callTarget,
uint96 callValue,
bytes memory callData
) internal returns (bool success, bytes memory revertData) {
// Check that the call is not prohibited.
if (!_isCallAllowed(callTarget, callData, token)) {
revert CallProhibitedError(callTarget, callData);
}
// Check that the call value is under the maximum price.
{
uint96 maximumPrice_ = maximumPrice;
if (callValue > maximumPrice_) {
revert MaximumPriceError(callValue, maximumPrice_);
}
}
// Execute the call to buy the NFT.
(bool s, bytes memory r) = callTarget.call{ value: callValue }(callData);
if (!s) {
return (false, r);
}
// Return whether the NFT was successfully bought.
return (token.safeOwnerOf(tokenId) == address(this), "");
}
function _finalize(
IERC721[] memory tokens,
uint256[] memory tokenIds,
uint96 totalEthUsed,
FixedGovernanceOpts memory governanceOpts,
bool isValidatedGovernanceOpts
) internal returns (Party party_) {
{
// Prevent unaccounted ETH from being used to inflate the price and
// create "ghost shares" in voting power.
uint96 totalContributions_ = totalContributions;
if (totalEthUsed > totalContributions_) {
revert ExceedsTotalContributionsError(totalEthUsed, totalContributions_);
}
}
if (totalEthUsed != 0) {
// Create a party around the newly bought NFTs and finalize a win.
settledPrice = totalEthUsed;
party_ = _createParty(governanceOpts, isValidatedGovernanceOpts, tokens, tokenIds);
emit Won(party_, tokens, tokenIds, totalEthUsed);
} else {
// If all NFTs were purchased for free or were all "gifted" to us,
// refund all contributors by finalizing a loss.
settledPrice = 0;
expiry = uint40(block.timestamp);
emit Lost();
}
}
function _finalize(
IERC721 token,
uint256 tokenId,
uint96 totalEthUsed,
FixedGovernanceOpts memory governanceOpts,
bool isValidatedGovernanceOpts
) internal returns (Party party_) {
IERC721[] memory tokens = new IERC721[](1);
tokens[0] = token;
uint256[] memory tokenIds = new uint256[](1);
tokenIds[0] = tokenId;
return _finalize(tokens, tokenIds, totalEthUsed, governanceOpts, isValidatedGovernanceOpts);
}
/// @inheritdoc Crowdfund
function getCrowdfundLifecycle() public view override returns (CrowdfundLifecycle) {
// If there is a settled price then we tried to buy the NFT.
if (settledPrice != 0) {
return
address(party) != address(0)
? CrowdfundLifecycle.Won // If we have a party, then we succeeded buying the NFT.
: CrowdfundLifecycle.Busy; // Otherwise we're in the middle of the `buy()`.
}
if (block.timestamp >= expiry) {
// Expired, but nothing to do so skip straight to lost, or NFT was
// acquired for free so refund contributors and trigger lost.
return CrowdfundLifecycle.Lost;
}
return CrowdfundLifecycle.Active;
}
function _getFinalPrice() internal view override returns (uint256) {
return settledPrice;
}
function _isCallAllowed(
address payable callTarget,
bytes memory callData,
IERC721 token
) private view returns (bool isAllowed) {
// Ensure the call target isn't trying to reenter
if (callTarget == address(this)) {
return false;
}
if (callTarget == address(token) && callData.length >= 4) {
// Get the function selector of the call (first 4 bytes of calldata).
bytes4 selector;
assembly {
selector := and(
mload(add(callData, 32)),
0xffffffff00000000000000000000000000000000000000000000000000000000
)
}
// Prevent approving the NFT to be transferred out from the crowdfund.
if (
selector == IERC721.approve.selector ||
selector == IERC721.setApprovalForAll.selector
) {
return false;
}
}
// All other calls are allowed.
return true;
}
}
// SPDX-License-Identifier: Beta Software
// http://ipfs.io/ipfs/QmbGX2MFCaMAsMNMugRFND6DtYygRkwkvrqEyTKhTdBLo5
pragma solidity 0.8.17;
import "../tokens/IERC721.sol";
import "../party/Party.sol";
import "../utils/Implementation.sol";
import "../utils/LibSafeERC721.sol";
import "../globals/IGlobals.sol";
import "../gatekeepers/IGateKeeper.sol";
import "openzeppelin/contracts/utils/cryptography/MerkleProof.sol";
import "./BuyCrowdfundBase.sol";
contract CollectionBatchBuyCrowdfund is BuyCrowdfundBase {
using LibSafeERC721 for IERC721;
using LibSafeCast for uint256;
using LibRawResult for bytes;
struct CollectionBatchBuyCrowdfundOptions {
// The name of the crowdfund.
// This will also carry over to the governance party.
string name;
// The token symbol for both the crowdfund and the governance NFTs.
string symbol;
// Customization preset ID to use for the crowdfund and governance NFTs.
uint256 customizationPresetId;
// The ERC721 contract of the NFTs being bought.
IERC721 nftContract;
// The merkle root of the token IDs that can be bought. If null, any
// token ID in the collection can be bought.
bytes32 nftTokenIdsMerkleRoot;
// How long this crowdfund has to buy the NFTs, in seconds.
uint40 duration;
// Maximum amount this crowdfund will pay for an NFT.
uint96 maximumPrice;
// An address that receives a portion of the final voting power
// when the party transitions into governance.
address payable splitRecipient;
// What percentage (in bps) of the final total voting power `splitRecipient`
// receives.
uint16 splitBps;
// If ETH is attached during deployment, it will be interpreted
// as a contribution. This is who gets credit for that contribution.
address initialContributor;
// If there is an initial contribution, this is who they will delegate their
// voting power to when the crowdfund transitions to governance.
address initialDelegate;
// Minimum amount of ETH that can be contributed to this crowdfund per address.
uint96 minContribution;
// Maximum amount of ETH that can be contributed to this crowdfund per address.
uint96 maxContribution;
// The gatekeeper contract to use (if non-null) to restrict who can
// contribute to this crowdfund.
IGateKeeper gateKeeper;
// The gate ID within the gateKeeper contract to use.
bytes12 gateKeeperId;
// Fixed governance options (i.e. cannot be changed) that the governance
// `Party` will be created with if the crowdfund succeeds.
FixedGovernanceOpts governanceOpts;
}
struct BatchBuyArgs {
uint256[] tokenIds;
address payable[] callTargets;
uint96[] callValues;
bytes[] callDatas;
bytes32[][] proofs;
uint256 minTokensBought;
uint256 minTotalEthUsed;
FixedGovernanceOpts governanceOpts;
uint256 hostIndex;
}
error NothingBoughtError();
error InvalidMinTokensBoughtError(uint256 minTokensBought);
error InvalidTokenIdError();
error ContributionsSpentForFailedBuyError();
error NotEnoughTokensBoughtError(uint256 tokensBought, uint256 minTokensBought);
error NotEnoughEthUsedError(uint256 ethUsed, uint256 minTotalEthUsed);
error MismatchedCallArgLengthsError();
/// @notice The contract of NFTs to buy.
IERC721 public nftContract;
/// @notice The merkle root of the token IDs that can be bought. If null,
/// allow any token ID in the collection can be bought.
bytes32 public nftTokenIdsMerkleRoot;
// Set the `Globals` contract.
constructor(IGlobals globals) BuyCrowdfundBase(globals) {}
/// @notice Initializer to be delegatecalled by `Proxy` constructor. Will
/// revert if called outside the constructor.
/// @param opts Options used to initialize the crowdfund. These are fixed
/// and cannot be changed later.
function initialize(
CollectionBatchBuyCrowdfundOptions memory opts
) external payable onlyConstructor {
if (opts.governanceOpts.hosts.length == 0) {
revert MissingHostsError();
}
BuyCrowdfundBase._initialize(
BuyCrowdfundBaseOptions({
name: opts.name,
symbol: opts.symbol,
customizationPresetId: opts.customizationPresetId,
duration: opts.duration,
maximumPrice: opts.maximumPrice,
splitRecipient: opts.splitRecipient,
splitBps: opts.splitBps,
initialContributor: opts.initialContributor,
initialDelegate: opts.initialDelegate,
minContribution: opts.minContribution,
maxContribution: opts.maxContribution,
gateKeeper: opts.gateKeeper,
gateKeeperId: opts.gateKeeperId,
governanceOpts: opts.governanceOpts
})
);
nftContract = opts.nftContract;
nftTokenIdsMerkleRoot = opts.nftTokenIdsMerkleRoot;
}
/// @notice Execute arbitrary calldata to perform a batch buy, creating a party
/// if it successfully buys the NFT. Only a host may call this.
/// @param args Arguments for the batch buy.
/// @return party_ Address of the `Party` instance created after its bought.
function batchBuy(BatchBuyArgs memory args) external onlyDelegateCall returns (Party party_) {
// This function is restricted to hosts.
_assertIsHost(msg.sender, args.governanceOpts, args.hostIndex);
{
// Ensure that the crowdfund is still active.
CrowdfundLifecycle lc = getCrowdfundLifecycle();
if (lc != CrowdfundLifecycle.Active) {
revert WrongLifecycleError(lc);
}
}
if (args.minTokensBought == 0) {
// Must buy at least one token.
revert InvalidMinTokensBoughtError(0);
}
// Check length of all arg arrays.
if (
args.tokenIds.length != args.callTargets.length ||
args.tokenIds.length != args.callValues.length ||
args.tokenIds.length != args.callDatas.length ||
args.tokenIds.length != args.proofs.length
) {
revert MismatchedCallArgLengthsError();
}
// Temporarily set to non-zero as a reentrancy guard.
settledPrice = type(uint96).max;
uint96 totalEthUsed;
uint256 tokensBought;
IERC721[] memory tokens = new IERC721[](args.tokenIds.length);
IERC721 token = nftContract;
bytes32 root = nftTokenIdsMerkleRoot;
for (uint256 i; i < args.tokenIds.length; ++i) {
if (root != bytes32(0)) {
// Verify the token ID is in the merkle tree.
_verifyTokenId(args.tokenIds[i], root, args.proofs[i]);
}
// Used to ensure no ETH is spent if the call fails.
uint256 balanceBefore = address(this).balance;
// Execute the call to buy the NFT.
(bool success, bytes memory revertData) = _buy(
token,
args.tokenIds[i],
args.callTargets[i],
args.callValues[i],
args.callDatas[i]
);
if (!success) {
if (args.minTokensBought >= args.tokenIds.length) {
// If the call failed with revert data, revert with that data.
if (revertData.length > 0) {
revertData.rawRevert();
} else {
revert FailedToBuyNFTError(token, args.tokenIds[i]);
}
} else {
// If the call failed, ensure no ETH was spent and skip this NFT.
if (address(this).balance != balanceBefore) {
revert ContributionsSpentForFailedBuyError();
}
continue;
}
}
totalEthUsed += args.callValues[i];
++tokensBought;
tokens[tokensBought - 1] = token;
args.tokenIds[tokensBought - 1] = args.tokenIds[i];
}
// This is to prevent this crowdfund from finalizing a loss if nothing
// was attempted to be bought (ie. `tokenIds` is empty) or all NFTs were
// bought for free.
if (totalEthUsed == 0) revert NothingBoughtError();
// Check number of tokens bought is not less than the minimum.
if (tokensBought < args.minTokensBought) {
revert NotEnoughTokensBoughtError(tokensBought, args.minTokensBought);
}
// Check total ETH used is not less than the minimum.
if (totalEthUsed < args.minTotalEthUsed) {
revert NotEnoughEthUsedError(totalEthUsed, args.minTotalEthUsed);
}
assembly {
// Update length of `tokens`
mstore(tokens, tokensBought)
// Update length of `tokenIds`
mstore(0x1A0, tokensBought)
}
return
_finalize(
tokens,
args.tokenIds,
totalEthUsed,
args.governanceOpts,
// If `_assertIsHost()` succeeded, the governance opts were validated.
true
);
}
function _verifyTokenId(uint256 tokenId, bytes32 root, bytes32[] memory proof) private pure {
bytes32 leaf;
assembly {
mstore(0x00, tokenId)
leaf := keccak256(0x00, 0x20)
}
if (!MerkleProof.verify(proof, root, leaf)) revert InvalidTokenIdError();
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../utils/LibAddress.sol";
import "../utils/LibRawResult.sol";
import "../utils/LibSafeCast.sol";
import "../tokens/ERC721Receiver.sol";
import "../party/Party.sol";
import "../globals/IGlobals.sol";
import "../gatekeepers/IGateKeeper.sol";
import "../renderers/RendererStorage.sol";
import "./CrowdfundNFT.sol";
// Base contract for AuctionCrowdfund/BuyCrowdfund.
// Holds post-win/loss logic. E.g., burning contribution NFTs and creating a
// party after winning.
abstract contract Crowdfund is Implementation, ERC721Receiver, CrowdfundNFT {
using LibRawResult for bytes;
using LibSafeCast for uint256;
using LibAddress for address payable;
enum CrowdfundLifecycle {
Invalid,
Active,
Expired,
Busy, // Temporary. mid-settlement state
Lost,
Won
}
// PartyGovernance options that must be known and fixed at crowdfund creation.
// This is a subset of PartyGovernance.GovernanceOpts.
struct FixedGovernanceOpts {
// Address of initial party hosts.
address[] hosts;
// How long people can vote on a proposal.
uint40 voteDuration;
// How long to wait after a proposal passes before it can be
// executed.
uint40 executionDelay;
// Minimum ratio of accept votes to consider a proposal passed,
// in bps, where 10,000 == 100%.
uint16 passThresholdBps;
// Fee bps for governance distributions.
uint16 feeBps;
// Fee recipeint for governance distributions.
address payable feeRecipient;
}
// Options to be passed into `_initialize()` when the crowdfund is created.
struct CrowdfundOptions {
string name;
string symbol;
uint256 customizationPresetId;
address payable splitRecipient;
uint16 splitBps;
address initialContributor;
address initialDelegate;
uint96 minContribution;
uint96 maxContribution;
IGateKeeper gateKeeper;
bytes12 gateKeeperId;
FixedGovernanceOpts governanceOpts;
}
// A record of a single contribution made by a user.
// Stored in `_contributionsByContributor`.
struct Contribution {
// The value of `Crowdfund.totalContributions` when this contribution was made.
uint96 previousTotalContributions;
// How much was this contribution.
uint96 amount;
}
// A record of the refund and governance NFT owed to a contributor if it
// could not be received by them from `burn()`.
struct Claim {
uint256 refund;
uint256 governanceTokenId;
}
error PartyAlreadyExistsError(Party party);
error WrongLifecycleError(CrowdfundLifecycle lc);
error InvalidGovernanceOptionsError();
error InvalidDelegateError();
error InvalidContributorError();
error NoPartyError();
error NotAllowedByGateKeeperError(
address contributor,
IGateKeeper gateKeeper,
bytes12 gateKeeperId,
bytes gateData
);
error SplitRecipientAlreadyBurnedError();
error InvalidBpsError(uint16 bps);
error ExceedsTotalContributionsError(uint96 value, uint96 totalContributions);
error NothingToClaimError();
error OnlyPartyHostError();
error OnlyContributorError();
error MissingHostsError();
error OnlyPartyDaoError(address notDao);
error OnlyPartyDaoOrHostError(address notDao);
error OnlyWhenEmergencyActionsAllowedError();
error BelowMinimumContributionsError(uint96 contributions, uint96 minContributions);
error AboveMaximumContributionsError(uint96 contributions, uint96 maxContributions);
event Burned(address contributor, uint256 ethUsed, uint256 ethOwed, uint256 votingPower);
event Contributed(
address sender,
address contributor,
uint256 amount,
address delegate,
uint256 previousTotalContributions
);
event EmergencyExecute(address target, bytes data, uint256 amountEth);
event EmergencyExecuteDisabled();
// The `Globals` contract storing global configuration values. This contract
// is immutable and it’s address will never change.
IGlobals private immutable _GLOBALS;
/// @notice The party instance created by `_createParty()`, if any after a
/// successful crowdfund.
Party public party;
/// @notice The total (recorded) ETH contributed to this crowdfund.
uint96 public totalContributions;
/// @notice The gatekeeper contract to use (if non-null) to restrict who can
/// contribute to the party.
IGateKeeper public gateKeeper;
/// @notice The ID of the gatekeeper strategy to use.
bytes12 public gateKeeperId;
/// @notice Who will receive a reserved portion of governance power when
/// the governance party is created.
address payable public splitRecipient;
/// @notice How much governance power to reserve for `splitRecipient`,
/// in bps, where 10,000 = 100%.
uint16 public splitBps;
// Whether the share for split recipient has been claimed through `burn()`.
bool private _splitRecipientHasBurned;
/// @notice Hash of party governance options passed into `initialize()`.
/// Used to check whether the `GovernanceOpts` passed into
/// `_createParty()` matches.
bytes32 public governanceOptsHash;
/// @notice Who a contributor last delegated to.
mapping(address => address) public delegationsByContributor;
// Array of contributions by a contributor.
// One is created for every nonzero contribution made.
// `internal` for testing purposes only.
mapping(address => Contribution[]) internal _contributionsByContributor;
/// @notice Stores the amount of ETH owed back to a contributor and governance NFT
/// that should be minted to them if it could not be transferred to
/// them with `burn()`.
mapping(address => Claim) public claims;
/// @notice Minimum amount of ETH that can be contributed to this crowdfund per address.
uint96 public minContribution;
/// @notice Maximum amount of ETH that can be contributed to this crowdfund per address.
uint96 public maxContribution;
/// @notice Whether the DAO has emergency powers for this party.
bool public emergencyExecuteDisabled;
// Set the `Globals` contract.
constructor(IGlobals globals) CrowdfundNFT(globals) {
_GLOBALS = globals;
}
// Initialize storage for proxy contracts, credit initial contribution (if
// any), and setup gatekeeper.
function _initialize(CrowdfundOptions memory opts) internal {
CrowdfundNFT._initialize(opts.name, opts.symbol, opts.customizationPresetId);
// Check that BPS values do not exceed the max.
if (opts.governanceOpts.feeBps > 1e4) {
revert InvalidBpsError(opts.governanceOpts.feeBps);
}
if (opts.governanceOpts.passThresholdBps > 1e4) {
revert InvalidBpsError(opts.governanceOpts.passThresholdBps);
}
if (opts.splitBps > 1e4) {
revert InvalidBpsError(opts.splitBps);
}
governanceOptsHash = _hashFixedGovernanceOpts(opts.governanceOpts);
splitRecipient = opts.splitRecipient;
splitBps = opts.splitBps;
// Set the minimum and maximum contribution amounts.
minContribution = opts.minContribution;
maxContribution = opts.maxContribution;
// If the deployer passed in some ETH during deployment, credit them
// for the initial contribution.
uint96 initialContribution = msg.value.safeCastUint256ToUint96();
if (initialContribution > 0) {
_setDelegate(opts.initialContributor, opts.initialDelegate);
// If this ETH is passed in, credit it to the `initialContributor`.
_contribute(opts.initialContributor, opts.initialDelegate, initialContribution, 0, "");
}
// Set up gatekeeper after initial contribution (initial always gets in).
gateKeeper = opts.gateKeeper;
gateKeeperId = opts.gateKeeperId;
}
/// @notice As the DAO, execute an arbitrary function call from this contract.
/// @dev Emergency actions must not be revoked for this to work.
/// @param targetAddress The contract to call.
/// @param targetCallData The data to pass to the contract.
/// @param amountEth The amount of ETH to send to the contract.
function emergencyExecute(
address targetAddress,
bytes calldata targetCallData,
uint256 amountEth
) external payable onlyDelegateCall {
// Must be called by the DAO.
if (!_isPartyDao(msg.sender)) {
revert OnlyPartyDaoError(msg.sender);
}
// Must not be disabled by DAO or host.
if (emergencyExecuteDisabled) {
revert OnlyWhenEmergencyActionsAllowedError();
}
(bool success, bytes memory res) = targetAddress.call{ value: amountEth }(targetCallData);
if (!success) {
res.rawRevert();
}
emit EmergencyExecute(targetAddress, targetCallData, amountEth);
}
/// @notice Revoke the DAO's ability to call emergencyExecute().
/// @dev Either the DAO or the party host can call this.
/// @param governanceOpts The fixed governance opts the crowdfund was created with.
/// @param hostIndex The index of the party host (caller).
function disableEmergencyExecute(
FixedGovernanceOpts memory governanceOpts,
uint256 hostIndex
) external onlyDelegateCall {
// Only the DAO or a host can call this.
if (!_isHost(msg.sender, governanceOpts, hostIndex) && !_isPartyDao(msg.sender)) {
revert OnlyPartyDaoOrHostError(msg.sender);
}
emergencyExecuteDisabled = true;
emit EmergencyExecuteDisabled();
}
/// @notice Burn the participation NFT for `contributor`, potentially
/// minting voting power and/or refunding unused ETH. `contributor`
/// may also be the split recipient, regardless of whether they are
/// also a contributor or not. This can be called by anyone on a
/// contributor's behalf to unlock their voting power in the
/// governance stage ensuring delegates receive their voting
/// power and governance is not stalled.
/// @param contributor The contributor whose NFT to burn for.
function burn(address payable contributor) public {
return _burn(contributor, getCrowdfundLifecycle(), party);
}
/// @dev Alias for `burn()`.
function activateOrRefund(address payable contributor) external {
burn(contributor);
}
/// @notice `burn()` in batch form.
/// Will not revert if any individual burn fails.
/// @param contributors The contributors whose NFT to burn for.
/// @param revertOnFailure If true, revert if any burn fails.
function batchBurn(address payable[] calldata contributors, bool revertOnFailure) public {
for (uint256 i = 0; i < contributors.length; ++i) {
(bool s, bytes memory r) = address(this).delegatecall(
abi.encodeCall(this.burn, (contributors[i]))
);
if (revertOnFailure && !s) {
r.rawRevert();
}
}
}
/// @dev Alias for `batchBurn()`.
function batchActivateOrRefund(
address payable[] calldata contributors,
bool revertOnFailure
) external {
batchBurn(contributors, revertOnFailure);
}
/// @notice Claim a governance NFT or refund that is owed back but could not be
/// given due to error in `_burn()` (eg. a contract that does not
/// implement `onERC721Received()` or cannot receive ETH). Only call
/// this if refund and governance NFT minting could not be returned
/// with `burn()`.
/// @param receiver The address to receive the NFT or refund.
function claim(address payable receiver) external {
Claim memory claimInfo = claims[msg.sender];
delete claims[msg.sender];
if (claimInfo.refund == 0 && claimInfo.governanceTokenId == 0) {
revert NothingToClaimError();
}
if (claimInfo.refund != 0) {
receiver.transferEth(claimInfo.refund);
}
if (claimInfo.governanceTokenId != 0) {
party.safeTransferFrom(address(this), receiver, claimInfo.governanceTokenId);
}
}
/// @notice Contribute to this crowdfund and/or update your delegation for the
/// governance phase should the crowdfund succeed.
/// For restricted crowdfunds, `gateData` can be provided to prove
/// membership to the gatekeeper.
/// @param delegate The address to delegate to for the governance phase.
/// @param gateData Data to pass to the gatekeeper to prove eligibility.
function contribute(address delegate, bytes memory gateData) external payable onlyDelegateCall {
_setDelegate(msg.sender, delegate);
_contribute(
msg.sender,
delegate,
msg.value.safeCastUint256ToUint96(),
// We cannot use `address(this).balance - msg.value` as the previous
// total contributions in case someone forces (suicides) ETH into this
// contract. This wouldn't be such a big deal for open crowdfunds
// but private ones (protected by a gatekeeper) could be griefed
// because it would ultimately result in governance power that
// is unattributed/unclaimable, meaning that party will never be
// able to reach 100% consensus.
totalContributions,
gateData
);
}
/// @notice Contribute to this crowdfund on behalf of another address.
/// @param recipient The address to record the contribution under.
/// @param initialDelegate The address to delegate to for the governance phase if recipient hasn't delegated.
/// @param gateData Data to pass to the gatekeeper to prove eligibility.
function contributeFor(
address recipient,
address initialDelegate,
bytes memory gateData
) external payable onlyDelegateCall {
_setDelegate(recipient, initialDelegate);
_contribute(
recipient,
initialDelegate,
msg.value.safeCastUint256ToUint96(),
totalContributions,
gateData
);
}
/// @notice `contributeFor()` in batch form.
/// May not revert if any individual contribution fails.
/// @param recipients The addresses to record the contributions under.
/// @param initialDelegates The addresses to delegate to for each recipient.
/// @param values The ETH to contribute for each recipient.
/// @param gateDatas Data to pass to the gatekeeper to prove eligibility.
/// @param revertOnFailure If true, revert if any contribution fails.
function batchContributeFor(
address[] memory recipients,
address[] memory initialDelegates,
uint256[] memory values,
bytes[] memory gateDatas,
bool revertOnFailure
) external payable {
for (uint256 i; i < recipients.length; ++i) {
(bool s, bytes memory r) = address(this).call{ value: values[i] }(
abi.encodeCall(
this.contributeFor,
(recipients[i], initialDelegates[i], gateDatas[i])
)
);
if (revertOnFailure && !s) {
r.rawRevert();
}
}
}
/// @inheritdoc EIP165
function supportsInterface(
bytes4 interfaceId
) public pure override(ERC721Receiver, CrowdfundNFT) returns (bool) {
return
ERC721Receiver.supportsInterface(interfaceId) ||
CrowdfundNFT.supportsInterface(interfaceId);
}
/// @notice Retrieve info about a participant's contributions.
/// @dev This will only be called off-chain so doesn't have to be optimal.
/// @param contributor The contributor to retrieve contributions for.
/// @return ethContributed The total ETH contributed by `contributor`.
/// @return ethUsed The total ETH used by `contributor` to acquire the NFT.
/// @return ethOwed The total ETH refunded back to `contributor`.
/// @return votingPower The total voting power minted to `contributor`.
function getContributorInfo(
address contributor
)
external
view
returns (uint256 ethContributed, uint256 ethUsed, uint256 ethOwed, uint256 votingPower)
{
CrowdfundLifecycle lc = getCrowdfundLifecycle();
if (lc == CrowdfundLifecycle.Won || lc == CrowdfundLifecycle.Lost) {
(ethUsed, ethOwed, votingPower) = _getFinalContribution(contributor);
ethContributed = ethUsed + ethOwed;
} else {
Contribution[] memory contributions = _contributionsByContributor[contributor];
uint256 numContributions = contributions.length;
for (uint256 i; i < numContributions; ++i) {
ethContributed += contributions[i].amount;
}
}
}
/// @notice Get the current lifecycle of the crowdfund.
function getCrowdfundLifecycle() public view virtual returns (CrowdfundLifecycle lifecycle);
// Get the final sale price of the bought assets. This will also be the total
// voting power of the governance party.
function _getFinalPrice() internal view virtual returns (uint256);
// Assert that `who` is a host at `governanceOpts.hosts[hostIndex]` and,
// if so, assert that the governance opts is the same as the crowdfund
// was created with.
// Return true if `governanceOpts` was validated in the process.
function _assertIsHost(
address who,
FixedGovernanceOpts memory governanceOpts,
uint256 hostIndex
) internal view {
if (!_isHost(who, governanceOpts, hostIndex)) {
revert OnlyPartyHostError();
}
}
// Check if `who` is a host at `hostIndex` index. Validates governance opts if so.
function _isHost(
address who,
FixedGovernanceOpts memory governanceOpts,
uint256 hostIndex
) private view returns (bool isHost) {
if (hostIndex < governanceOpts.hosts.length && who == governanceOpts.hosts[hostIndex]) {
// Validate governance opts if the host was found.
_assertValidGovernanceOpts(governanceOpts);
return true;
}
return false;
}
function _isPartyDao(address who) private view returns (bool isPartyDao) {
return who == _GLOBALS.getAddress(LibGlobals.GLOBAL_DAO_WALLET);
}
// Assert that `who` is a contributor to the crowdfund.
function _assertIsContributor(address who) internal view {
if (_contributionsByContributor[who].length == 0) {
revert OnlyContributorError();
}
}
// Can be called after a party has won.
// Deploys and initializes a `Party` instance via the `PartyFactory`
// and transfers the bought NFT to it.
// After calling this, anyone can burn CF tokens on a contributor's behalf
// with the `burn()` function.
function _createParty(
FixedGovernanceOpts memory governanceOpts,
bool governanceOptsAlreadyValidated,
IERC721[] memory preciousTokens,
uint256[] memory preciousTokenIds
) internal returns (Party party_) {
if (party != Party(payable(0))) {
revert PartyAlreadyExistsError(party);
}
// If the governance opts haven't already been validated, make sure that
// it hasn't been tampered with.
if (!governanceOptsAlreadyValidated) {
_assertValidGovernanceOpts(governanceOpts);
}
// Create a party.
party = party_ = _getPartyFactory().createParty(
address(this),
Party.PartyOptions({
name: name,
symbol: symbol,
// Indicates to the party to use the same customization preset as the crowdfund.
customizationPresetId: 0,
governance: PartyGovernance.GovernanceOpts({
hosts: governanceOpts.hosts,
voteDuration: governanceOpts.voteDuration,
executionDelay: governanceOpts.executionDelay,
passThresholdBps: governanceOpts.passThresholdBps,
totalVotingPower: _getFinalPrice().safeCastUint256ToUint96(),
feeBps: governanceOpts.feeBps,
feeRecipient: governanceOpts.feeRecipient
})
}),
preciousTokens,
preciousTokenIds
);
// Transfer the acquired NFTs to the new party.
for (uint256 i; i < preciousTokens.length; ++i) {
preciousTokens[i].transferFrom(address(this), address(party_), preciousTokenIds[i]);
}
}
// Overloaded single token wrapper for _createParty()
function _createParty(
FixedGovernanceOpts memory governanceOpts,
bool governanceOptsAlreadyValidated,
IERC721 preciousToken,
uint256 preciousTokenId
) internal returns (Party party_) {
IERC721[] memory tokens = new IERC721[](1);
tokens[0] = preciousToken;
uint256[] memory tokenIds = new uint256[](1);
tokenIds[0] = preciousTokenId;
return _createParty(governanceOpts, governanceOptsAlreadyValidated, tokens, tokenIds);
}
// Assert that the hash of `opts` matches the hash this crowdfund was initialized with.
function _assertValidGovernanceOpts(FixedGovernanceOpts memory governanceOpts) private view {
bytes32 governanceOptsHash_ = _hashFixedGovernanceOpts(governanceOpts);
if (governanceOptsHash_ != governanceOptsHash) {
revert InvalidGovernanceOptionsError();
}
}
function _hashFixedGovernanceOpts(
FixedGovernanceOpts memory opts
) internal pure returns (bytes32 h) {
// Hash in place.
assembly {
// Replace the address[] hosts field with its hash temporarily.
let oldHostsFieldValue := mload(opts)
mstore(
opts,
keccak256(add(oldHostsFieldValue, 0x20), mul(mload(oldHostsFieldValue), 32))
)
// Hash the entire struct.
h := keccak256(opts, 0xC0)
// Restore old hosts field value.
mstore(opts, oldHostsFieldValue)
}
}
function _getFinalContribution(
address contributor
) internal view returns (uint256 ethUsed, uint256 ethOwed, uint256 votingPower) {
uint256 totalEthUsed = _getFinalPrice();
{
Contribution[] memory contributions = _contributionsByContributor[contributor];
uint256 numContributions = contributions.length;
for (uint256 i; i < numContributions; ++i) {
Contribution memory c = contributions[i];
if (c.previousTotalContributions >= totalEthUsed) {
// This entire contribution was not used.
ethOwed += c.amount;
} else if (c.previousTotalContributions + c.amount <= totalEthUsed) {
// This entire contribution was used.
ethUsed += c.amount;
} else {
// This contribution was partially used.
uint256 partialEthUsed = totalEthUsed - c.previousTotalContributions;
ethUsed += partialEthUsed;
ethOwed = c.amount - partialEthUsed;
}
}
}
// one SLOAD with optimizer on
address splitRecipient_ = splitRecipient;
uint256 splitBps_ = splitBps;
if (splitRecipient_ == address(0)) {
splitBps_ = 0;
}
votingPower = ((1e4 - splitBps_) * ethUsed) / 1e4;
if (splitRecipient_ == contributor) {
// Split recipient is also the contributor so just add the split
// voting power.
votingPower += (splitBps_ * totalEthUsed + (1e4 - 1)) / 1e4; // round up
}
}
function _setDelegate(address contributor, address delegate) private {
if (delegate == address(0)) revert InvalidDelegateError();
// Only need to update delegate if there was a change.
address oldDelegate = delegationsByContributor[contributor];
if (oldDelegate == delegate) return;
// Only allow setting delegate on another's behalf if the delegate is unset.
if (msg.sender != contributor && oldDelegate != address(0)) return;
// Update delegate.
delegationsByContributor[contributor] = delegate;
}
/// @dev While it is not necessary to pass in `delegate` to this because the
/// function does not require it, it is here to emit in the
/// `Contribute` event so that the PartyBid frontend can access it more
/// easily.
function _contribute(
address contributor,
address delegate,
uint96 amount,
uint96 previousTotalContributions,
bytes memory gateData
) private {
if (contributor == address(this)) revert InvalidContributorError();
if (amount == 0) return;
// Must not be blocked by gatekeeper.
{
IGateKeeper _gateKeeper = gateKeeper;
if (_gateKeeper != IGateKeeper(address(0))) {
if (!_gateKeeper.isAllowed(msg.sender, gateKeeperId, gateData)) {
revert NotAllowedByGateKeeperError(
msg.sender,
_gateKeeper,
gateKeeperId,
gateData
);
}
}
}
// Only allow contributions while the crowdfund is active.
{
CrowdfundLifecycle lc = getCrowdfundLifecycle();
if (lc != CrowdfundLifecycle.Active) {
revert WrongLifecycleError(lc);
}
}
// Increase total contributions.
totalContributions += amount;
// Create contributions entry for this contributor.
Contribution[] storage contributions = _contributionsByContributor[contributor];
uint256 numContributions = contributions.length;
uint96 ethContributed;
for (uint256 i; i < numContributions; ++i) {
ethContributed += contributions[i].amount;
}
// Check contribution is greater than minimum contribution.
if (ethContributed + amount < minContribution) {
revert BelowMinimumContributionsError(ethContributed + amount, minContribution);
}
// Check contribution is less than maximum contribution.
if (ethContributed + amount > maxContribution) {
revert AboveMaximumContributionsError(ethContributed + amount, maxContribution);
}
emit Contributed(msg.sender, contributor, amount, delegate, previousTotalContributions);
if (numContributions >= 1) {
Contribution memory lastContribution = contributions[numContributions - 1];
// If no one else (other than this contributor) has contributed since,
// we can just reuse this contributor's last entry.
uint256 totalContributionsAmountForReuse = lastContribution.previousTotalContributions +
lastContribution.amount;
if (totalContributionsAmountForReuse == previousTotalContributions) {
lastContribution.amount += amount;
contributions[numContributions - 1] = lastContribution;
return;
}
}
// Add a new contribution entry.
contributions.push(
Contribution({ previousTotalContributions: previousTotalContributions, amount: amount })
);
// Mint a participation NFT if this is their first contribution.
if (numContributions == 0) {
_mint(contributor);
}
}
function _burn(address payable contributor, CrowdfundLifecycle lc, Party party_) private {
// If the CF has won, a party must have been created prior.
if (lc == CrowdfundLifecycle.Won) {
if (party_ == Party(payable(0))) {
revert NoPartyError();
}
} else if (lc != CrowdfundLifecycle.Lost) {
// Otherwise it must have lost.
revert WrongLifecycleError(lc);
}
// Split recipient can burn even if they don't have a token.
{
address splitRecipient_ = splitRecipient;
if (contributor == splitRecipient_) {
if (_splitRecipientHasBurned) {
revert SplitRecipientAlreadyBurnedError();
}
_splitRecipientHasBurned = true;
}
// Revert if already burned or does not exist.
if (splitRecipient_ != contributor || _doesTokenExistFor(contributor)) {
CrowdfundNFT._burn(contributor);
}
}
// Compute the contributions used and owed to the contributor, along
// with the voting power they'll have in the governance stage.
(uint256 ethUsed, uint256 ethOwed, uint256 votingPower) = _getFinalContribution(
contributor
);
if (votingPower > 0) {
// Get the address to delegate voting power to. If null, delegate to self.
address delegate = delegationsByContributor[contributor];
if (delegate == address(0)) {
// Delegate can be unset for the split recipient if they never
// contribute. Self-delegate if this occurs.
delegate = contributor;
}
// Mint governance NFT for the contributor.
try party_.mint(contributor, votingPower, delegate) returns (uint256) {
// OK
} catch {
// Mint to the crowdfund itself to escrow for contributor to
// come claim later on.
uint256 tokenId = party_.mint(address(this), votingPower, delegate);
claims[contributor].governanceTokenId = tokenId;
}
}
// Refund any ETH owed back to the contributor.
(bool s, ) = contributor.call{ value: ethOwed }("");
if (!s) {
// If the transfer fails, the contributor can still come claim it
// from the crowdfund.
claims[contributor].refund = ethOwed;
}
emit Burned(contributor, ethUsed, ethOwed, votingPower);
}
function _getPartyFactory() internal view returns (IPartyFactory) {
return IPartyFactory(_GLOBALS.getAddress(LibGlobals.GLOBAL_PARTY_FACTORY));
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../tokens/IERC721.sol";
import "../utils/ReadOnlyDelegateCall.sol";
import "../utils/EIP165.sol";
import "../globals/IGlobals.sol";
import "../globals/LibGlobals.sol";
import "../renderers/RendererStorage.sol";
/// @notice NFT functionality for crowdfund types. This NFT is soulbound and read-only.
contract CrowdfundNFT is IERC721, EIP165, ReadOnlyDelegateCall {
error AlreadyMintedError(address owner, uint256 tokenId);
error AlreadyBurnedError(address owner, uint256 tokenId);
error InvalidTokenError(uint256 tokenId);
error InvalidAddressError();
// The `Globals` contract storing global configuration values. This contract
// is immutable and it’s address will never change.
IGlobals private immutable _GLOBALS;
/// @notice The name of the crowdfund. This will also carry over to the
/// governance party.
string public name;
/// @notice The token symbol for the crowdfund. This will also carry over to
/// the governance party.
string public symbol;
mapping(uint256 => address) private _owners;
modifier alwaysRevert() {
revert("ALWAYS FAILING");
_; // Compiler requires this.
}
// Set the `Globals` contract.
constructor(IGlobals globals) {
_GLOBALS = globals;
}
// Initialize name and symbol for crowdfund.
function _initialize(
string memory name_,
string memory symbol_,
uint256 customizationPresetId
) internal virtual {
name = name_;
symbol = symbol_;
if (customizationPresetId != 0) {
RendererStorage(_GLOBALS.getAddress(LibGlobals.GLOBAL_RENDERER_STORAGE))
.useCustomizationPreset(customizationPresetId);
}
}
/// @notice DO NOT CALL. This is a soulbound NFT and cannot be transferred.
/// Attempting to call this function will always fail.
function transferFrom(address, address, uint256) external pure alwaysRevert {}
/// @notice DO NOT CALL. This is a soulbound NFT and cannot be transferred.
/// Attempting to call this function will always fail.
function safeTransferFrom(address, address, uint256) external pure alwaysRevert {}
/// @notice DO NOT CALL. This is a soulbound NFT and cannot be transferred.
/// Attempting to call this function will always fail.
function safeTransferFrom(
address,
address,
uint256,
bytes calldata
) external pure alwaysRevert {}
/// @notice DO NOT CALL. This is a soulbound NFT and cannot be transferred.
/// Attempting to call this function will always fail.
function approve(address, uint256) external pure alwaysRevert {}
/// @notice DO NOT CALL. This is a soulbound NFT and cannot be transferred.
/// Attempting to call this function will always fail.
function setApprovalForAll(address, bool) external pure alwaysRevert {}
/// @notice This is a soulbound NFT and cannot be transferred.
/// Attempting to call this function will always return null.
function getApproved(uint256) external pure returns (address) {
return address(0);
}
/// @notice This is a soulbound NFT and cannot be transferred.
/// Attempting to call this function will always return false.
function isApprovedForAll(address, address) external pure returns (bool) {
return false;
}
/// @inheritdoc EIP165
function supportsInterface(bytes4 interfaceId) public pure virtual override returns (bool) {
return
super.supportsInterface(interfaceId) ||
// ERC721 interface ID
interfaceId == 0x80ac58cd;
}
/// @notice Returns a URI to render the NFT.
function tokenURI(uint256) external view returns (string memory) {
return _delegateToRenderer();
}
/// @notice Returns a URI for the storefront-level metadata for your contract.
function contractURI() external view returns (string memory) {
return _delegateToRenderer();
}
/// @inheritdoc IERC721
function ownerOf(uint256 tokenId) external view returns (address owner) {
owner = _owners[tokenId];
if (owner == address(0)) {
revert InvalidTokenError(tokenId);
}
}
/// @inheritdoc IERC721
function balanceOf(address owner) external view returns (uint256 numTokens) {
return _doesTokenExistFor(owner) ? 1 : 0;
}
function _doesTokenExistFor(address owner) internal view returns (bool) {
return _owners[uint256(uint160(owner))] != address(0);
}
function _mint(address owner) internal returns (uint256 tokenId) {
if (owner == address(0)) revert InvalidAddressError();
tokenId = uint256(uint160(owner));
if (_owners[tokenId] != owner) {
_owners[tokenId] = owner;
emit Transfer(address(0), owner, tokenId);
} else {
revert AlreadyMintedError(owner, tokenId);
}
}
function _burn(address owner) internal {
uint256 tokenId = uint256(uint160(owner));
if (_owners[tokenId] == owner) {
_owners[tokenId] = address(0);
emit Transfer(owner, address(0), tokenId);
return;
}
revert AlreadyBurnedError(owner, tokenId);
}
function _delegateToRenderer() private view returns (string memory) {
_readOnlyDelegateCall(
// Instance of IERC721Renderer.
_GLOBALS.getAddress(LibGlobals.GLOBAL_CF_NFT_RENDER_IMPL),
msg.data
);
assert(false); // Will not be reached.
return "";
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../tokens/IERC20.sol";
import "./ITokenDistributorParty.sol";
/// @notice Creates token distributions for parties.
interface ITokenDistributor {
enum TokenType {
Native,
Erc20
}
// Info on a distribution, created by createDistribution().
struct DistributionInfo {
// Type of distribution/token.
TokenType tokenType;
// ID of the distribution. Assigned by createDistribution().
uint256 distributionId;
// The party whose members can claim the distribution.
ITokenDistributorParty party;
// Who can claim `fee`.
address payable feeRecipient;
// The token being distributed.
address token;
// Total amount of `token` that can be claimed by party members.
uint128 memberSupply;
// Amount of `token` to be redeemed by `feeRecipient`.
uint128 fee;
}
event DistributionCreated(ITokenDistributorParty indexed party, DistributionInfo info);
event DistributionFeeClaimed(
ITokenDistributorParty indexed party,
address indexed feeRecipient,
TokenType tokenType,
address token,
uint256 amount
);
event DistributionClaimedByPartyToken(
ITokenDistributorParty indexed party,
uint256 indexed partyTokenId,
address indexed owner,
TokenType tokenType,
address token,
uint256 amountClaimed
);
/// @notice Create a new distribution for an outstanding native token balance
/// governed by a party.
/// @dev Native tokens should be transferred directly into this contract
/// immediately prior (same tx) to calling `createDistribution()` or
/// attached to the call itself.
/// @param party The party whose members can claim the distribution.
/// @param feeRecipient Who can claim `fee`.
/// @param feeBps Percentage (in bps) of the distribution `feeRecipient` receives.
/// @return info Information on the created distribution.
function createNativeDistribution(
ITokenDistributorParty party,
address payable feeRecipient,
uint16 feeBps
) external payable returns (DistributionInfo memory info);
/// @notice Create a new distribution for an outstanding ERC20 token balance
/// governed by a party.
/// @dev ERC20 tokens should be transferred directly into this contract
/// immediately prior (same tx) to calling `createDistribution()` or
/// attached to the call itself.
/// @param token The ERC20 token to distribute.
/// @param party The party whose members can claim the distribution.
/// @param feeRecipient Who can claim `fee`.
/// @param feeBps Percentage (in bps) of the distribution `feeRecipient` receives.
/// @return info Information on the created distribution.
function createErc20Distribution(
IERC20 token,
ITokenDistributorParty party,
address payable feeRecipient,
uint16 feeBps
) external returns (DistributionInfo memory info);
/// @notice Claim a portion of a distribution owed to a `partyTokenId` belonging
/// to the party that created the distribution. The caller
/// must own this token.
/// @param info Information on the distribution being claimed.
/// @param partyTokenId The ID of the party token to claim for.
/// @return amountClaimed The amount of the distribution claimed.
function claim(
DistributionInfo calldata info,
uint256 partyTokenId
) external returns (uint128 amountClaimed);
/// @notice Claim the fee for a distribution. Only a distribution's `feeRecipient`
/// can call this.
/// @param info Information on the distribution being claimed.
/// @param recipient The address to send the fee to.
function claimFee(DistributionInfo calldata info, address payable recipient) external;
/// @notice Batch version of `claim()`.
/// @param infos Information on the distributions being claimed.
/// @param partyTokenIds The ID of the party tokens to claim for.
/// @return amountsClaimed The amount of the distributions claimed.
function batchClaim(
DistributionInfo[] calldata infos,
uint256[] calldata partyTokenIds
) external returns (uint128[] memory amountsClaimed);
/// @notice Batch version of `claimFee()`.
/// @param infos Information on the distributions to claim fees for.
/// @param recipients The addresses to send the fees to.
function batchClaimFee(
DistributionInfo[] calldata infos,
address payable[] calldata recipients
) external;
/// @notice Compute the amount of a distribution's token are owed to a party
/// member, identified by the `partyTokenId`.
/// @param party The party to use for computing the claim amount.
/// @param memberSupply Total amount of tokens that can be claimed in the distribution.
/// @param partyTokenId The ID of the party token to claim for.
/// @return claimAmount The amount of the distribution owed to the party member.
function getClaimAmount(
ITokenDistributorParty party,
uint256 memberSupply,
uint256 partyTokenId
) external view returns (uint128);
/// @notice Check whether the fee has been claimed for a distribution.
/// @param party The party to use for checking whether the fee has been claimed.
/// @param distributionId The ID of the distribution to check.
/// @return feeClaimed Whether the fee has been claimed.
function wasFeeClaimed(
ITokenDistributorParty party,
uint256 distributionId
) external view returns (bool);
/// @notice Check whether a `partyTokenId` has claimed their share of a distribution.
/// @param party The party to use for checking whether the `partyTokenId` has claimed.
/// @param partyTokenId The ID of the party token to check.
/// @param distributionId The ID of the distribution to check.
/// @return hasClaimed Whether the `partyTokenId` has claimed.
function hasPartyTokenIdClaimed(
ITokenDistributorParty party,
uint256 partyTokenId,
uint256 distributionId
) external view returns (bool);
/// @notice Get how much unclaimed member tokens are left in a distribution.
/// @param party The party to use for checking the unclaimed member tokens.
/// @param distributionId The ID of the distribution to check.
/// @return remainingMemberSupply The amount of distribution supply remaining.
function getRemainingMemberSupply(
ITokenDistributorParty party,
uint256 distributionId
) external view returns (uint128);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
// Interface the caller of `ITokenDistributor.createDistribution()` must implement.
interface ITokenDistributorParty {
/// @notice Return the owner of a token.
/// @param tokenId The token ID to query.
/// @return owner The owner of `tokenId`.
function ownerOf(uint256 tokenId) external view returns (address);
/// @notice Return the distribution share of a token. Denominated fractions
/// of 1e18. I.e., 1e18 = 100%.
/// @param tokenId The token ID to query.
/// @return share The distribution percentage of `tokenId`.
function getDistributionShareOf(uint256 tokenId) external view returns (uint256);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
// Interface for a gatekeeper contract used for private crowdfund instances.
interface IGateKeeper {
/// @notice Check if a participant is eligible to participate in a crowdfund.
/// @param participant The address of the participant.
/// @param id The ID of the gate to eligibility against.
/// @param userData The data used to check eligibility.
/// @return `true` if the participant is allowed to participate, `false` otherwise.
function isAllowed(
address participant,
bytes12 id,
bytes memory userData
) external view returns (bool);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../utils/Implementation.sol";
// Single registry of global values controlled by multisig.
// See `LibGlobals` for all valid keys.
interface IGlobals {
function getBytes32(uint256 key) external view returns (bytes32);
function getUint256(uint256 key) external view returns (uint256);
function getBool(uint256 key) external view returns (bool);
function getAddress(uint256 key) external view returns (address);
function getImplementation(uint256 key) external view returns (Implementation);
function getIncludesBytes32(uint256 key, bytes32 value) external view returns (bool);
function getIncludesUint256(uint256 key, uint256 value) external view returns (bool);
function getIncludesAddress(uint256 key, address value) external view returns (bool);
function setBytes32(uint256 key, bytes32 value) external;
function setUint256(uint256 key, uint256 value) external;
function setBool(uint256 key, bool value) external;
function setAddress(uint256 key, address value) external;
function setIncludesBytes32(uint256 key, bytes32 value, bool isIncluded) external;
function setIncludesUint256(uint256 key, uint256 value, bool isIncluded) external;
function setIncludesAddress(uint256 key, address value, bool isIncluded) external;
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
// Valid keys in `IGlobals`. Append-only.
library LibGlobals {
uint256 internal constant GLOBAL_PARTY_IMPL = 1;
uint256 internal constant GLOBAL_PROPOSAL_ENGINE_IMPL = 2;
uint256 internal constant GLOBAL_PARTY_FACTORY = 3;
uint256 internal constant GLOBAL_GOVERNANCE_NFT_RENDER_IMPL = 4;
uint256 internal constant GLOBAL_CF_NFT_RENDER_IMPL = 5;
uint256 internal constant GLOBAL_OS_ZORA_AUCTION_TIMEOUT = 6;
uint256 internal constant GLOBAL_OS_ZORA_AUCTION_DURATION = 7;
uint256 internal constant GLOBAL_AUCTION_CF_IMPL = 8;
uint256 internal constant GLOBAL_BUY_CF_IMPL = 9;
uint256 internal constant GLOBAL_COLLECTION_BUY_CF_IMPL = 10;
uint256 internal constant GLOBAL_DAO_WALLET = 11;
uint256 internal constant GLOBAL_TOKEN_DISTRIBUTOR = 12;
uint256 internal constant GLOBAL_OPENSEA_CONDUIT_KEY = 13;
uint256 internal constant GLOBAL_OPENSEA_ZONE = 14;
uint256 internal constant GLOBAL_PROPOSAL_MAX_CANCEL_DURATION = 15;
uint256 internal constant GLOBAL_ZORA_MIN_AUCTION_DURATION = 16;
uint256 internal constant GLOBAL_ZORA_MAX_AUCTION_DURATION = 17;
uint256 internal constant GLOBAL_ZORA_MAX_AUCTION_TIMEOUT = 18;
uint256 internal constant GLOBAL_OS_MIN_ORDER_DURATION = 19;
uint256 internal constant GLOBAL_OS_MAX_ORDER_DURATION = 20;
uint256 internal constant GLOBAL_DISABLE_PARTY_ACTIONS = 21;
uint256 internal constant GLOBAL_RENDERER_STORAGE = 22;
uint256 internal constant GLOBAL_PROPOSAL_MIN_CANCEL_DURATION = 23;
uint256 internal constant GLOBAL_ROLLING_AUCTION_CF_IMPL = 24;
uint256 internal constant GLOBAL_COLLECTION_BATCH_BUY_CF_IMPL = 25;
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../globals/IGlobals.sol";
import "../tokens/IERC721.sol";
import "./Party.sol";
// Creates generic Party instances.
interface IPartyFactory {
event PartyCreated(
Party indexed party,
Party.PartyOptions opts,
IERC721[] preciousTokens,
uint256[] preciousTokenIds,
address creator
);
/// @notice Deploy a new party instance. Afterwards, governance NFTs can be minted
/// for party members using the `mint()` function from the newly
/// created party.
/// @param authority The address that can call `mint()`.
/// @param opts Options used to initialize the party. These are fixed
/// and cannot be changed later.
/// @param preciousTokens The tokens that are considered precious by the
/// party.These are protected assets and are subject
/// to extra restrictions in proposals vs other
/// assets.
/// @param preciousTokenIds The IDs associated with each token in `preciousTokens`.
/// @return party The newly created `Party` instance.
function createParty(
address authority,
Party.PartyOptions calldata opts,
IERC721[] memory preciousTokens,
uint256[] memory preciousTokenIds
) external returns (Party party);
/// @notice The `Globals` contract storing global configuration values. This contract
/// is immutable and it’s address will never change.
function GLOBALS() external view returns (IGlobals);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../tokens/IERC721.sol";
import "./PartyGovernanceNFT.sol";
import "./PartyGovernance.sol";
/// @notice The governance contract that also custodies the precious NFTs. This
/// is also the Governance NFT 721 contract.
contract Party is PartyGovernanceNFT {
// Arguments used to initialize the party.
struct PartyOptions {
PartyGovernance.GovernanceOpts governance;
string name;
string symbol;
uint256 customizationPresetId;
}
// Arguments used to initialize the `PartyGovernanceNFT`.
struct PartyInitData {
PartyOptions options;
IERC721[] preciousTokens;
uint256[] preciousTokenIds;
address mintAuthority;
}
// Set the `Globals` contract.
constructor(IGlobals globals) PartyGovernanceNFT(globals) {}
/// @notice Initializer to be delegatecalled by `Proxy` constructor. Will
/// revert if called outside the constructor.
/// @param initData Options used to initialize the party governance.
function initialize(PartyInitData memory initData) external onlyConstructor {
PartyGovernanceNFT._initialize(
initData.options.name,
initData.options.symbol,
initData.options.customizationPresetId,
initData.options.governance,
initData.preciousTokens,
initData.preciousTokenIds,
initData.mintAuthority
);
}
receive() external payable {}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../distribution/ITokenDistributorParty.sol";
import "../distribution/ITokenDistributor.sol";
import "../utils/ReadOnlyDelegateCall.sol";
import "../tokens/IERC721.sol";
import "../tokens/IERC20.sol";
import "../tokens/IERC1155.sol";
import "../tokens/ERC721Receiver.sol";
import "../tokens/ERC1155Receiver.sol";
import "../utils/LibERC20Compat.sol";
import "../utils/LibRawResult.sol";
import "../utils/LibSafeCast.sol";
import "../globals/IGlobals.sol";
import "../globals/LibGlobals.sol";
import "../proposals/IProposalExecutionEngine.sol";
import "../proposals/LibProposal.sol";
import "../proposals/ProposalStorage.sol";
import "./IPartyFactory.sol";
/// @notice Base contract for a Party encapsulating all governance functionality.
abstract contract PartyGovernance is
ITokenDistributorParty,
ERC721Receiver,
ERC1155Receiver,
ProposalStorage,
Implementation,
ReadOnlyDelegateCall
{
using LibERC20Compat for IERC20;
using LibRawResult for bytes;
using LibSafeCast for uint256;
using LibSafeCast for int192;
using LibSafeCast for uint96;
// States a proposal can be in.
enum ProposalStatus {
// The proposal does not exist.
Invalid,
// The proposal has been proposed (via `propose()`), has not been vetoed
// by a party host, and is within the voting window. Members can vote on
// the proposal and party hosts can veto the proposal.
Voting,
// The proposal has either exceeded its voting window without reaching
// `passThresholdBps` of votes or was vetoed by a party host.
Defeated,
// The proposal reached at least `passThresholdBps` of votes but is still
// waiting for `executionDelay` to pass before it can be executed. Members
// can continue to vote on the proposal and party hosts can veto at this time.
Passed,
// Same as `Passed` but now `executionDelay` has been satisfied. Any member
// may execute the proposal via `execute()`, unless `maxExecutableTime`
// has arrived.
Ready,
// The proposal has been executed at least once but has further steps to
// complete so it needs to be executed again. No other proposals may be
// executed while a proposal is in the `InProgress` state. No voting or
// vetoing of the proposal is allowed, however it may be forcibly cancelled
// via `cancel()` if the `cancelDelay` has passed since being first executed.
InProgress,
// The proposal was executed and completed all its steps. No voting or
// vetoing can occur and it cannot be cancelled nor executed again.
Complete,
// The proposal was executed at least once but did not complete before
// `cancelDelay` seconds passed since the first execute and was forcibly cancelled.
Cancelled
}
struct GovernanceOpts {
// Address of initial party hosts.
address[] hosts;
// How long people can vote on a proposal.
uint40 voteDuration;
// How long to wait after a proposal passes before it can be
// executed.
uint40 executionDelay;
// Minimum ratio of accept votes to consider a proposal passed,
// in bps, where 10,000 == 100%.
uint16 passThresholdBps;
// Total voting power of governance NFTs.
uint96 totalVotingPower;
// Fee bps for distributions.
uint16 feeBps;
// Fee recipeint for distributions.
address payable feeRecipient;
}
// Subset of `GovernanceOpts` that are commonly read together for
// efficiency.
struct GovernanceValues {
uint40 voteDuration;
uint40 executionDelay;
uint16 passThresholdBps;
uint96 totalVotingPower;
}
// A snapshot of voting power for a member.
struct VotingPowerSnapshot {
// The timestamp when the snapshot was taken.
uint40 timestamp;
// Voting power that was delegated to this user by others.
uint96 delegatedVotingPower;
// The intrinsic (not delegated from someone else) voting power of this user.
uint96 intrinsicVotingPower;
// Whether the user was delegated to another at this snapshot.
bool isDelegated;
}
// Proposal details chosen by proposer.
struct Proposal {
// Time beyond which the proposal can no longer be executed.
// If the proposal has already been executed, and is still InProgress,
// this value is ignored.
uint40 maxExecutableTime;
// The minimum seconds this proposal can remain in the InProgress status
// before it can be cancelled.
uint40 cancelDelay;
// Encoded proposal data. The first 4 bytes are the proposal type, followed
// by encoded proposal args specific to the proposal type. See
// ProposalExecutionEngine for details.
bytes proposalData;
}
// Accounting and state tracking values for a proposal.
// Fits in a word.
struct ProposalStateValues {
// When the proposal was proposed.
uint40 proposedTime;
// When the proposal passed the vote.
uint40 passedTime;
// When the proposal was first executed.
uint40 executedTime;
// When the proposal completed.
uint40 completedTime;
// Number of accept votes.
uint96 votes; // -1 == vetoed
}
// Storage states for a proposal.
struct ProposalState {
// Accounting and state tracking values.
ProposalStateValues values;
// Hash of the proposal.
bytes32 hash;
// Whether a member has voted for (accepted) this proposal already.
mapping(address => bool) hasVoted;
}
event Proposed(uint256 proposalId, address proposer, Proposal proposal);
event ProposalAccepted(uint256 proposalId, address voter, uint256 weight);
event EmergencyExecute(address target, bytes data, uint256 amountEth);
event ProposalPassed(uint256 indexed proposalId);
event ProposalVetoed(uint256 indexed proposalId, address host);
event ProposalExecuted(uint256 indexed proposalId, address executor, bytes nextProgressData);
event ProposalCancelled(uint256 indexed proposalId);
event DistributionCreated(
ITokenDistributor.TokenType tokenType,
address token,
uint256 tokenId
);
event VotingPowerDelegated(address indexed owner, address indexed delegate);
event HostStatusTransferred(address oldHost, address newHost);
event EmergencyExecuteDisabled();
error MismatchedPreciousListLengths();
error BadProposalStatusError(ProposalStatus status);
error BadProposalHashError(bytes32 proposalHash, bytes32 actualHash);
error ExecutionTimeExceededError(uint40 maxExecutableTime, uint40 timestamp);
error OnlyPartyHostError();
error OnlyActiveMemberError();
error InvalidDelegateError();
error BadPreciousListError();
error OnlyPartyDaoError(address notDao, address partyDao);
error OnlyPartyDaoOrHostError(address notDao, address partyDao);
error OnlyWhenEmergencyActionsAllowedError();
error OnlyWhenEnabledError();
error AlreadyVotedError(address voter);
error InvalidNewHostError();
error ProposalCannotBeCancelledYetError(uint40 currentTime, uint40 cancelTime);
error InvalidBpsError(uint16 bps);
uint256 private constant UINT40_HIGH_BIT = 1 << 39;
uint96 private constant VETO_VALUE = type(uint96).max;
// The `Globals` contract storing global configuration values. This contract
// is immutable and it’s address will never change.
IGlobals private immutable _GLOBALS;
/// @notice Whether the DAO has emergency powers for this party.
bool public emergencyExecuteDisabled;
/// @notice Distribution fee bps.
uint16 public feeBps;
/// @notice Distribution fee recipient.
address payable public feeRecipient;
/// @notice The hash of the list of precious NFTs guarded by the party.
bytes32 public preciousListHash;
/// @notice The last proposal ID that was used. 0 means no proposals have been made.
uint256 public lastProposalId;
/// @notice Whether an address is a party host.
mapping(address => bool) public isHost;
/// @notice The last person a voter delegated its voting power to.
mapping(address => address) public delegationsByVoter;
// Constant governance parameters, fixed from the inception of this party.
GovernanceValues internal _governanceValues;
// ProposalState by proposal ID.
mapping(uint256 => ProposalState) private _proposalStateByProposalId;
// Snapshots of voting power per user, each sorted by increasing time.
mapping(address => VotingPowerSnapshot[]) private _votingPowerSnapshotsByVoter;
modifier onlyHost() {
if (!isHost[msg.sender]) {
revert OnlyPartyHostError();
}
_;
}
// Caller must have voting power at the current time.
modifier onlyActiveMember() {
{
VotingPowerSnapshot memory snap = _getLastVotingPowerSnapshotForVoter(msg.sender);
// Must have either delegated voting power or intrinsic voting power.
if (snap.intrinsicVotingPower == 0 && snap.delegatedVotingPower == 0) {
revert OnlyActiveMemberError();
}
}
_;
}
// Caller must have voting power at the current time or be the `Party` instance.
modifier onlyActiveMemberOrSelf() {
// Ignore if the party is calling functions on itself, like with
// `FractionalizeProposal` calling `distribute()`.
if (msg.sender != address(this)) {
VotingPowerSnapshot memory snap = _getLastVotingPowerSnapshotForVoter(msg.sender);
// Must have either delegated voting power or intrinsic voting power.
if (snap.intrinsicVotingPower == 0 && snap.delegatedVotingPower == 0) {
revert OnlyActiveMemberError();
}
}
_;
}
// Only the party DAO multisig can call.
modifier onlyPartyDao() {
{
address partyDao = _GLOBALS.getAddress(LibGlobals.GLOBAL_DAO_WALLET);
if (msg.sender != partyDao) {
revert OnlyPartyDaoError(msg.sender, partyDao);
}
}
_;
}
// Only the party DAO multisig or a party host can call.
modifier onlyPartyDaoOrHost() {
address partyDao = _GLOBALS.getAddress(LibGlobals.GLOBAL_DAO_WALLET);
if (msg.sender != partyDao && !isHost[msg.sender]) {
revert OnlyPartyDaoOrHostError(msg.sender, partyDao);
}
_;
}
// Only if `emergencyExecuteDisabled` is not true.
modifier onlyWhenEmergencyExecuteAllowed() {
if (emergencyExecuteDisabled) {
revert OnlyWhenEmergencyActionsAllowedError();
}
_;
}
modifier onlyWhenNotGloballyDisabled() {
if (_GLOBALS.getBool(LibGlobals.GLOBAL_DISABLE_PARTY_ACTIONS)) {
revert OnlyWhenEnabledError();
}
_;
}
// Set the `Globals` contract.
constructor(IGlobals globals) {
_GLOBALS = globals;
}
// Initialize storage for proxy contracts and initialize the proposal execution engine.
function _initialize(
GovernanceOpts memory opts,
IERC721[] memory preciousTokens,
uint256[] memory preciousTokenIds
) internal virtual {
// Check BPS are valid.
if (opts.feeBps > 1e4) {
revert InvalidBpsError(opts.feeBps);
}
if (opts.passThresholdBps > 1e4) {
revert InvalidBpsError(opts.passThresholdBps);
}
// Initialize the proposal execution engine.
_initProposalImpl(
IProposalExecutionEngine(_GLOBALS.getAddress(LibGlobals.GLOBAL_PROPOSAL_ENGINE_IMPL)),
""
);
// Set the governance parameters.
_governanceValues = GovernanceValues({
voteDuration: opts.voteDuration,
executionDelay: opts.executionDelay,
passThresholdBps: opts.passThresholdBps,
totalVotingPower: opts.totalVotingPower
});
// Set fees.
feeBps = opts.feeBps;
feeRecipient = opts.feeRecipient;
// Set the precious list.
_setPreciousList(preciousTokens, preciousTokenIds);
// Set the party hosts.
for (uint256 i = 0; i < opts.hosts.length; ++i) {
isHost[opts.hosts[i]] = true;
}
}
/// @dev Forward all unknown read-only calls to the proposal execution engine.
/// Initial use case is to facilitate eip-1271 signatures.
fallback() external {
_readOnlyDelegateCall(address(_getProposalExecutionEngine()), msg.data);
}
/// @inheritdoc EIP165
/// @dev Combined logic for `ERC721Receiver` and `ERC1155Receiver`.
function supportsInterface(
bytes4 interfaceId
) public pure virtual override(ERC721Receiver, ERC1155Receiver) returns (bool) {
return
ERC721Receiver.supportsInterface(interfaceId) ||
ERC1155Receiver.supportsInterface(interfaceId);
}
/// @notice Get the current `ProposalExecutionEngine` instance.
function getProposalExecutionEngine() external view returns (IProposalExecutionEngine) {
return _getProposalExecutionEngine();
}
/// @notice Get the total voting power of `voter` at a `timestamp`.
/// @param voter The address of the voter.
/// @param timestamp The timestamp to get the voting power at.
/// @return votingPower The total voting power of `voter` at `timestamp`.
function getVotingPowerAt(
address voter,
uint40 timestamp
) external view returns (uint96 votingPower) {
return getVotingPowerAt(voter, timestamp, type(uint256).max);
}
/// @notice Get the total voting power of `voter` at a snapshot `snapIndex`, with checks to
/// make sure it is the latest voting snapshot =< `timestamp`.
/// @param voter The address of the voter.
/// @param timestamp The timestamp to get the voting power at.
/// @param snapIndex The index of the snapshot to get the voting power at.
/// @return votingPower The total voting power of `voter` at `timestamp`.
function getVotingPowerAt(
address voter,
uint40 timestamp,
uint256 snapIndex
) public view returns (uint96 votingPower) {
VotingPowerSnapshot memory snap = _getVotingPowerSnapshotAt(voter, timestamp, snapIndex);
return (snap.isDelegated ? 0 : snap.intrinsicVotingPower) + snap.delegatedVotingPower;
}
/// @notice Get the state of a proposal.
/// @param proposalId The ID of the proposal.
/// @return status The status of the proposal.
/// @return values The state of the proposal.
function getProposalStateInfo(
uint256 proposalId
) external view returns (ProposalStatus status, ProposalStateValues memory values) {
values = _proposalStateByProposalId[proposalId].values;
status = _getProposalStatus(values);
}
/// @notice Retrieve fixed governance parameters.
/// @return gv The governance parameters of this party.
function getGovernanceValues() external view returns (GovernanceValues memory gv) {
return _governanceValues;
}
/// @notice Get the hash of a proposal.
/// @dev Proposal details are not stored on-chain so the hash is used to enforce
/// consistency between calls.
/// @param proposal The proposal to hash.
/// @return proposalHash The hash of the proposal.
function getProposalHash(Proposal memory proposal) public pure returns (bytes32 proposalHash) {
// Hash the proposal in-place. Equivalent to:
// keccak256(abi.encode(
// proposal.maxExecutableTime,
// proposal.cancelDelay,
// keccak256(proposal.proposalData)
// ))
bytes32 dataHash = keccak256(proposal.proposalData);
assembly {
// Overwrite the data field with the hash of its contents and then
// hash the struct.
let dataPos := add(proposal, 0x40)
let t := mload(dataPos)
mstore(dataPos, dataHash)
proposalHash := keccak256(proposal, 0x60)
// Restore the data field.
mstore(dataPos, t)
}
}
/// @notice Get the index of the most recent voting power snapshot <= `timestamp`.
/// @param voter The address of the voter.
/// @param timestamp The timestamp to get the snapshot index at.
/// @return index The index of the snapshot.
function findVotingPowerSnapshotIndex(
address voter,
uint40 timestamp
) public view returns (uint256 index) {
VotingPowerSnapshot[] storage snaps = _votingPowerSnapshotsByVoter[voter];
// Derived from Open Zeppelin binary search
// ref: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/Checkpoints.sol#L39
uint256 high = snaps.length;
uint256 low = 0;
while (low < high) {
uint256 mid = (low + high) / 2;
if (snaps[mid].timestamp > timestamp) {
// Entry is too recent.
high = mid;
} else {
// Entry is older. This is our best guess for now.
low = mid + 1;
}
}
// Return `type(uint256).max` if no valid voting snapshots found.
return high == 0 ? type(uint256).max : high - 1;
}
/// @notice Pledge your intrinsic voting power to a new delegate, removing it from
/// the old one (if any).
/// @param delegate The address to delegating voting power to.
function delegateVotingPower(address delegate) external onlyDelegateCall {
_adjustVotingPower(msg.sender, 0, delegate);
emit VotingPowerDelegated(msg.sender, delegate);
}
/// @notice Transfer party host status to another.
/// @param newPartyHost The address of the new host.
function abdicate(address newPartyHost) external onlyHost onlyDelegateCall {
// 0 is a special case burn address.
if (newPartyHost != address(0)) {
// Cannot transfer host status to an existing host.
if (isHost[newPartyHost]) {
revert InvalidNewHostError();
}
isHost[newPartyHost] = true;
}
isHost[msg.sender] = false;
emit HostStatusTransferred(msg.sender, newPartyHost);
}
/// @notice Create a token distribution by moving the party's entire balance
/// to the `TokenDistributor` contract and immediately creating a
/// distribution governed by this party.
/// @dev The `feeBps` and `feeRecipient` this party was created with will be
/// propagated to the distribution. Party members are entitled to a
/// share of the distribution's tokens proportionate to their relative
/// voting power in this party (less the fee).
/// @dev Allow this to be called by the party itself for `FractionalizeProposal`.
/// @param tokenType The type of token to distribute.
/// @param token The address of the token to distribute.
/// @param tokenId The ID of the token to distribute. Currently unused but
/// may be used in the future to support other distribution types.
/// @return distInfo The information about the created distribution.
function distribute(
ITokenDistributor.TokenType tokenType,
address token,
uint256 tokenId
)
external
onlyActiveMemberOrSelf
onlyWhenNotGloballyDisabled
onlyDelegateCall
returns (ITokenDistributor.DistributionInfo memory distInfo)
{
// Get the address of the token distributor.
ITokenDistributor distributor = ITokenDistributor(
_GLOBALS.getAddress(LibGlobals.GLOBAL_TOKEN_DISTRIBUTOR)
);
emit DistributionCreated(tokenType, token, tokenId);
// Create a native token distribution.
address payable feeRecipient_ = feeRecipient;
uint16 feeBps_ = feeBps;
if (tokenType == ITokenDistributor.TokenType.Native) {
return
distributor.createNativeDistribution{ value: address(this).balance }(
this,
feeRecipient_,
feeBps_
);
}
// Otherwise must be an ERC20 token distribution.
assert(tokenType == ITokenDistributor.TokenType.Erc20);
IERC20(token).compatTransfer(address(distributor), IERC20(token).balanceOf(address(this)));
return distributor.createErc20Distribution(IERC20(token), this, feeRecipient_, feeBps_);
}
/// @notice Make a proposal for members to vote on and cast a vote to accept it
/// as well.
/// @dev Only an active member (has voting power) can call this.
/// Afterwards, members can vote to support it with `accept()` or a party
/// host can unilaterally reject the proposal with `veto()`.
/// @param proposal The details of the proposal.
/// @param latestSnapIndex The index of the caller's most recent voting power
/// snapshot before the proposal was created. Should
/// be retrieved off-chain and passed in.
function propose(
Proposal memory proposal,
uint256 latestSnapIndex
) external onlyActiveMember onlyDelegateCall returns (uint256 proposalId) {
proposalId = ++lastProposalId;
// Store the time the proposal was created and the proposal hash.
(
_proposalStateByProposalId[proposalId].values,
_proposalStateByProposalId[proposalId].hash
) = (
ProposalStateValues({
proposedTime: uint40(block.timestamp),
passedTime: 0,
executedTime: 0,
completedTime: 0,
votes: 0
}),
getProposalHash(proposal)
);
emit Proposed(proposalId, msg.sender, proposal);
accept(proposalId, latestSnapIndex);
}
/// @notice Vote to support a proposed proposal.
/// @dev The voting power cast will be the effective voting power of the caller
/// just before `propose()` was called (see `getVotingPowerAt()`).
/// If the proposal reaches `passThresholdBps` acceptance ratio then the
/// proposal will be in the `Passed` state and will be executable after
/// the `executionDelay` has passed, putting it in the `Ready` state.
/// @param proposalId The ID of the proposal to accept.
/// @param snapIndex The index of the caller's last voting power snapshot
/// before the proposal was created. Should be retrieved
/// off-chain and passed in.
/// @return totalVotes The total votes cast on the proposal.
function accept(
uint256 proposalId,
uint256 snapIndex
) public onlyDelegateCall returns (uint256 totalVotes) {
// Get the information about the proposal.
ProposalState storage info = _proposalStateByProposalId[proposalId];
ProposalStateValues memory values = info.values;
// Can only vote in certain proposal statuses.
{
ProposalStatus status = _getProposalStatus(values);
// Allow voting even if the proposal is passed/ready so it can
// potentially reach 100% consensus, which unlocks special
// behaviors for certain proposal types.
if (
status != ProposalStatus.Voting &&
status != ProposalStatus.Passed &&
status != ProposalStatus.Ready
) {
revert BadProposalStatusError(status);
}
}
// Cannot vote twice.
if (info.hasVoted[msg.sender]) {
revert AlreadyVotedError(msg.sender);
}
// Mark the caller as having voted.
info.hasVoted[msg.sender] = true;
// Increase the total votes that have been cast on this proposal.
uint96 votingPower = getVotingPowerAt(msg.sender, values.proposedTime - 1, snapIndex);
values.votes += votingPower;
info.values = values;
emit ProposalAccepted(proposalId, msg.sender, votingPower);
// Update the proposal status if it has reached the pass threshold.
if (
values.passedTime == 0 &&
_areVotesPassing(
values.votes,
_governanceValues.totalVotingPower,
_governanceValues.passThresholdBps
)
) {
info.values.passedTime = uint40(block.timestamp);
emit ProposalPassed(proposalId);
}
return values.votes;
}
/// @notice As a party host, veto a proposal, unilaterally rejecting it.
/// @dev The proposal will never be executable and cannot be voted on anymore.
/// A proposal that has been already executed at least once (in the `InProgress` status)
/// cannot be vetoed.
/// @param proposalId The ID of the proposal to veto.
function veto(uint256 proposalId) external onlyHost onlyDelegateCall {
// Setting `votes` to -1 indicates a veto.
ProposalState storage info = _proposalStateByProposalId[proposalId];
ProposalStateValues memory values = info.values;
{
ProposalStatus status = _getProposalStatus(values);
// Proposal must be in one of the following states.
if (
status != ProposalStatus.Voting &&
status != ProposalStatus.Passed &&
status != ProposalStatus.Ready
) {
revert BadProposalStatusError(status);
}
}
// -1 indicates veto.
info.values.votes = VETO_VALUE;
emit ProposalVetoed(proposalId, msg.sender);
}
/// @notice Executes a proposal that has passed governance.
/// @dev The proposal must be in the `Ready` or `InProgress` status.
/// A `ProposalExecuted` event will be emitted with a non-empty `nextProgressData`
/// if the proposal has extra steps (must be executed again) to carry out,
/// in which case `nextProgressData` should be passed into the next `execute()` call.
/// The `ProposalExecutionEngine` enforces that only one `InProgress` proposal
/// is active at a time, so that proposal must be completed or cancelled via `cancel()`
/// in order to execute a different proposal.
/// `extraData` is optional, off-chain data a proposal might need to execute a step.
/// @param proposalId The ID of the proposal to execute.
/// @param proposal The details of the proposal.
/// @param preciousTokens The tokens that the party considers precious.
/// @param preciousTokenIds The token IDs associated with each precious token.
/// @param progressData The data returned from the last `execute()` call, if any.
/// @param extraData Off-chain data a proposal might need to execute a step.
function execute(
uint256 proposalId,
Proposal memory proposal,
IERC721[] memory preciousTokens,
uint256[] memory preciousTokenIds,
bytes calldata progressData,
bytes calldata extraData
) external payable onlyActiveMember onlyWhenNotGloballyDisabled onlyDelegateCall {
// Get information about the proposal.
ProposalState storage proposalState = _proposalStateByProposalId[proposalId];
// Proposal details must remain the same from `propose()`.
_validateProposalHash(proposal, proposalState.hash);
ProposalStateValues memory values = proposalState.values;
ProposalStatus status = _getProposalStatus(values);
// The proposal must be executable or have already been executed but still
// has more steps to go.
if (status != ProposalStatus.Ready && status != ProposalStatus.InProgress) {
revert BadProposalStatusError(status);
}
if (status == ProposalStatus.Ready) {
// If the proposal has not been executed yet, make sure it hasn't
// expired. Note that proposals that have been executed
// (but still have more steps) ignore `maxExecutableTime`.
if (proposal.maxExecutableTime < block.timestamp) {
revert ExecutionTimeExceededError(
proposal.maxExecutableTime,
uint40(block.timestamp)
);
}
proposalState.values.executedTime = uint40(block.timestamp);
}
// Check that the precious list is valid.
if (!_isPreciousListCorrect(preciousTokens, preciousTokenIds)) {
revert BadPreciousListError();
}
// Preemptively set the proposal to completed to avoid it being executed
// again in a deeper call.
proposalState.values.completedTime = uint40(block.timestamp);
// Execute the proposal.
bool completed = _executeProposal(
proposalId,
proposal,
preciousTokens,
preciousTokenIds,
_getProposalFlags(values),
progressData,
extraData
);
if (!completed) {
// Proposal did not complete.
proposalState.values.completedTime = 0;
}
}
/// @notice Cancel a (probably stuck) InProgress proposal.
/// @dev `proposal.cancelDelay` seconds must have passed since it was first
/// executed for this to be valid. The currently active proposal will
/// simply be yeeted out of existence so another proposal can execute.
/// This is intended to be a last resort and can leave the party in a
/// broken state. Whenever possible, active proposals should be
/// allowed to complete their lifecycle.
/// @param proposalId The ID of the proposal to cancel.
/// @param proposal The details of the proposal to cancel.
function cancel(
uint256 proposalId,
Proposal calldata proposal
) external onlyActiveMember onlyDelegateCall {
// Get information about the proposal.
ProposalState storage proposalState = _proposalStateByProposalId[proposalId];
// Proposal details must remain the same from `propose()`.
_validateProposalHash(proposal, proposalState.hash);
ProposalStateValues memory values = proposalState.values;
{
// Must be `InProgress`.
ProposalStatus status = _getProposalStatus(values);
if (status != ProposalStatus.InProgress) {
revert BadProposalStatusError(status);
}
}
{
// Limit the `cancelDelay` to the global max and min cancel delay
// to mitigate parties accidentally getting stuck forever by setting an
// unrealistic `cancelDelay` or being reckless with too low a
// cancel delay.
uint256 cancelDelay = proposal.cancelDelay;
uint256 globalMaxCancelDelay = _GLOBALS.getUint256(
LibGlobals.GLOBAL_PROPOSAL_MAX_CANCEL_DURATION
);
uint256 globalMinCancelDelay = _GLOBALS.getUint256(
LibGlobals.GLOBAL_PROPOSAL_MIN_CANCEL_DURATION
);
if (globalMaxCancelDelay != 0) {
// Only if we have one set.
if (cancelDelay > globalMaxCancelDelay) {
cancelDelay = globalMaxCancelDelay;
}
}
if (globalMinCancelDelay != 0) {
// Only if we have one set.
if (cancelDelay < globalMinCancelDelay) {
cancelDelay = globalMinCancelDelay;
}
}
uint256 cancelTime = values.executedTime + cancelDelay;
// Must not be too early.
if (block.timestamp < cancelTime) {
revert ProposalCannotBeCancelledYetError(
uint40(block.timestamp),
uint40(cancelTime)
);
}
}
// Mark the proposal as cancelled by setting the completed time to the current
// time with the high bit set.
proposalState.values.completedTime = uint40(block.timestamp | UINT40_HIGH_BIT);
{
// Delegatecall into the proposal engine impl to perform the cancel.
(bool success, bytes memory resultData) = (address(_getProposalExecutionEngine()))
.delegatecall(
abi.encodeCall(IProposalExecutionEngine.cancelProposal, (proposalId))
);
if (!success) {
resultData.rawRevert();
}
}
emit ProposalCancelled(proposalId);
}
/// @notice As the DAO, execute an arbitrary function call from this contract.
/// @dev Emergency actions must not be revoked for this to work.
/// @param targetAddress The contract to call.
/// @param targetCallData The data to pass to the contract.
/// @param amountEth The amount of ETH to send to the contract.
function emergencyExecute(
address targetAddress,
bytes calldata targetCallData,
uint256 amountEth
) external payable onlyPartyDao onlyWhenEmergencyExecuteAllowed onlyDelegateCall {
(bool success, bytes memory res) = targetAddress.call{ value: amountEth }(targetCallData);
if (!success) {
res.rawRevert();
}
emit EmergencyExecute(targetAddress, targetCallData, amountEth);
}
/// @notice Revoke the DAO's ability to call emergencyExecute().
/// @dev Either the DAO or the party host can call this.
function disableEmergencyExecute() external onlyPartyDaoOrHost onlyDelegateCall {
emergencyExecuteDisabled = true;
emit EmergencyExecuteDisabled();
}
function _executeProposal(
uint256 proposalId,
Proposal memory proposal,
IERC721[] memory preciousTokens,
uint256[] memory preciousTokenIds,
uint256 flags,
bytes memory progressData,
bytes memory extraData
) private returns (bool completed) {
// Setup the arguments for the proposal execution engine.
IProposalExecutionEngine.ExecuteProposalParams
memory executeParams = IProposalExecutionEngine.ExecuteProposalParams({
proposalId: proposalId,
proposalData: proposal.proposalData,
progressData: progressData,
extraData: extraData,
preciousTokens: preciousTokens,
preciousTokenIds: preciousTokenIds,
flags: flags
});
// Get the progress data returned after the proposal is executed.
bytes memory nextProgressData;
{
// Execute the proposal.
(bool success, bytes memory resultData) = address(_getProposalExecutionEngine())
.delegatecall(
abi.encodeCall(IProposalExecutionEngine.executeProposal, (executeParams))
);
if (!success) {
resultData.rawRevert();
}
nextProgressData = abi.decode(resultData, (bytes));
}
emit ProposalExecuted(proposalId, msg.sender, nextProgressData);
// If the returned progress data is empty, then the proposal completed
// and it should not be executed again.
return nextProgressData.length == 0;
}
// Get the most recent voting power snapshot <= timestamp using `hintindex` as a "hint".
function _getVotingPowerSnapshotAt(
address voter,
uint40 timestamp,
uint256 hintIndex
) internal view returns (VotingPowerSnapshot memory snap) {
VotingPowerSnapshot[] storage snaps = _votingPowerSnapshotsByVoter[voter];
uint256 snapsLength = snaps.length;
if (snapsLength != 0) {
if (
// Hint is within bounds.
hintIndex < snapsLength &&
// Snapshot is not too recent.
snaps[hintIndex].timestamp <= timestamp &&
// Snapshot is not too old.
(hintIndex == snapsLength - 1 || snaps[hintIndex + 1].timestamp > timestamp)
) {
return snaps[hintIndex];
}
// Hint was wrong, fallback to binary search to find snapshot.
hintIndex = findVotingPowerSnapshotIndex(voter, timestamp);
// Check that snapshot was found.
if (hintIndex != type(uint256).max) {
return snaps[hintIndex];
}
}
// No snapshot found.
return snap;
}
// Transfers some voting power of `from` to `to`. The total voting power of
// their respective delegates will be updated as well.
function _transferVotingPower(address from, address to, uint256 power) internal {
int192 powerI192 = power.safeCastUint256ToInt192();
_adjustVotingPower(from, -powerI192, address(0));
_adjustVotingPower(to, powerI192, address(0));
}
// Increase `voter`'s intrinsic voting power and update their delegate if delegate is nonzero.
function _adjustVotingPower(address voter, int192 votingPower, address delegate) internal {
VotingPowerSnapshot memory oldSnap = _getLastVotingPowerSnapshotForVoter(voter);
address oldDelegate = delegationsByVoter[voter];
// If `oldDelegate` is zero and `voter` never delegated, then have
// `voter` delegate to themself.
oldDelegate = oldDelegate == address(0) ? voter : oldDelegate;
// If the new `delegate` is zero, use the current (old) delegate.
delegate = delegate == address(0) ? oldDelegate : delegate;
VotingPowerSnapshot memory newSnap = VotingPowerSnapshot({
timestamp: uint40(block.timestamp),
delegatedVotingPower: oldSnap.delegatedVotingPower,
intrinsicVotingPower: (oldSnap.intrinsicVotingPower.safeCastUint96ToInt192() +
votingPower).safeCastInt192ToUint96(),
isDelegated: delegate != voter
});
_insertVotingPowerSnapshot(voter, newSnap);
delegationsByVoter[voter] = delegate;
// Handle rebalancing delegates.
_rebalanceDelegates(voter, oldDelegate, delegate, oldSnap, newSnap);
}
function _getTotalVotingPower() internal view returns (uint256) {
return _governanceValues.totalVotingPower;
}
// Update the delegated voting power of the old and new delegates delegated to
// by `voter` based on the snapshot change.
function _rebalanceDelegates(
address voter,
address oldDelegate,
address newDelegate,
VotingPowerSnapshot memory oldSnap,
VotingPowerSnapshot memory newSnap
) private {
if (newDelegate == address(0) || oldDelegate == address(0)) {
revert InvalidDelegateError();
}
if (oldDelegate != voter && oldDelegate != newDelegate) {
// Remove past voting power from old delegate.
VotingPowerSnapshot memory oldDelegateSnap = _getLastVotingPowerSnapshotForVoter(
oldDelegate
);
VotingPowerSnapshot memory updatedOldDelegateSnap = VotingPowerSnapshot({
timestamp: uint40(block.timestamp),
delegatedVotingPower: oldDelegateSnap.delegatedVotingPower -
oldSnap.intrinsicVotingPower,
intrinsicVotingPower: oldDelegateSnap.intrinsicVotingPower,
isDelegated: oldDelegateSnap.isDelegated
});
_insertVotingPowerSnapshot(oldDelegate, updatedOldDelegateSnap);
}
if (newDelegate != voter) {
// Not delegating to self.
// Add new voting power to new delegate.
VotingPowerSnapshot memory newDelegateSnap = _getLastVotingPowerSnapshotForVoter(
newDelegate
);
uint96 newDelegateDelegatedVotingPower = newDelegateSnap.delegatedVotingPower +
newSnap.intrinsicVotingPower;
if (newDelegate == oldDelegate) {
// If the old and new delegate are the same, subtract the old
// intrinsic voting power of the voter, or else we will double
// count a portion of it.
newDelegateDelegatedVotingPower -= oldSnap.intrinsicVotingPower;
}
VotingPowerSnapshot memory updatedNewDelegateSnap = VotingPowerSnapshot({
timestamp: uint40(block.timestamp),
delegatedVotingPower: newDelegateDelegatedVotingPower,
intrinsicVotingPower: newDelegateSnap.intrinsicVotingPower,
isDelegated: newDelegateSnap.isDelegated
});
_insertVotingPowerSnapshot(newDelegate, updatedNewDelegateSnap);
}
}
// Append a new voting power snapshot, overwriting the last one if possible.
function _insertVotingPowerSnapshot(address voter, VotingPowerSnapshot memory snap) private {
VotingPowerSnapshot[] storage voterSnaps = _votingPowerSnapshotsByVoter[voter];
uint256 n = voterSnaps.length;
// If same timestamp as last entry, overwrite the last snapshot, otherwise append.
if (n != 0) {
VotingPowerSnapshot memory lastSnap = voterSnaps[n - 1];
if (lastSnap.timestamp == snap.timestamp) {
voterSnaps[n - 1] = snap;
return;
}
}
voterSnaps.push(snap);
}
function _getLastVotingPowerSnapshotForVoter(
address voter
) private view returns (VotingPowerSnapshot memory snap) {
VotingPowerSnapshot[] storage voterSnaps = _votingPowerSnapshotsByVoter[voter];
uint256 n = voterSnaps.length;
if (n != 0) {
snap = voterSnaps[n - 1];
}
}
function _getProposalFlags(ProposalStateValues memory pv) private view returns (uint256) {
if (_isUnanimousVotes(pv.votes, _governanceValues.totalVotingPower)) {
return LibProposal.PROPOSAL_FLAG_UNANIMOUS;
}
return 0;
}
function _getProposalStatus(
ProposalStateValues memory pv
) private view returns (ProposalStatus status) {
// Never proposed.
if (pv.proposedTime == 0) {
return ProposalStatus.Invalid;
}
// Executed at least once.
if (pv.executedTime != 0) {
if (pv.completedTime == 0) {
return ProposalStatus.InProgress;
}
// completedTime high bit will be set if cancelled.
if (pv.completedTime & UINT40_HIGH_BIT == UINT40_HIGH_BIT) {
return ProposalStatus.Cancelled;
}
return ProposalStatus.Complete;
}
// Vetoed.
if (pv.votes == type(uint96).max) {
return ProposalStatus.Defeated;
}
uint40 t = uint40(block.timestamp);
GovernanceValues memory gv = _governanceValues;
if (pv.passedTime != 0) {
// Ready.
if (pv.passedTime + gv.executionDelay <= t) {
return ProposalStatus.Ready;
}
// If unanimous, we skip the execution delay.
if (_isUnanimousVotes(pv.votes, gv.totalVotingPower)) {
return ProposalStatus.Ready;
}
// Passed.
return ProposalStatus.Passed;
}
// Voting window expired.
if (pv.proposedTime + gv.voteDuration <= t) {
return ProposalStatus.Defeated;
}
return ProposalStatus.Voting;
}
function _isUnanimousVotes(
uint96 totalVotes,
uint96 totalVotingPower
) private pure returns (bool) {
uint256 acceptanceRatio = (totalVotes * 1e4) / totalVotingPower;
// If >= 99.99% acceptance, consider it unanimous.
// The minting formula for voting power is a bit lossy, so we check
// for slightly less than 100%.
return acceptanceRatio >= 0.9999e4;
}
function _areVotesPassing(
uint96 voteCount,
uint96 totalVotingPower,
uint16 passThresholdBps
) private pure returns (bool) {
return (uint256(voteCount) * 1e4) / uint256(totalVotingPower) >= uint256(passThresholdBps);
}
function _setPreciousList(
IERC721[] memory preciousTokens,
uint256[] memory preciousTokenIds
) private {
if (preciousTokens.length != preciousTokenIds.length) {
revert MismatchedPreciousListLengths();
}
preciousListHash = _hashPreciousList(preciousTokens, preciousTokenIds);
}
function _isPreciousListCorrect(
IERC721[] memory preciousTokens,
uint256[] memory preciousTokenIds
) private view returns (bool) {
return preciousListHash == _hashPreciousList(preciousTokens, preciousTokenIds);
}
function _hashPreciousList(
IERC721[] memory preciousTokens,
uint256[] memory preciousTokenIds
) internal pure returns (bytes32 h) {
assembly {
mstore(0x00, keccak256(add(preciousTokens, 0x20), mul(mload(preciousTokens), 0x20)))
mstore(0x20, keccak256(add(preciousTokenIds, 0x20), mul(mload(preciousTokenIds), 0x20)))
h := keccak256(0x00, 0x40)
}
}
// Assert that the hash of a proposal matches expectedHash.
function _validateProposalHash(Proposal memory proposal, bytes32 expectedHash) private pure {
bytes32 actualHash = getProposalHash(proposal);
if (expectedHash != actualHash) {
revert BadProposalHashError(actualHash, expectedHash);
}
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../utils/ReadOnlyDelegateCall.sol";
import "../utils/LibSafeCast.sol";
import "openzeppelin/contracts/interfaces/IERC2981.sol";
import "../globals/IGlobals.sol";
import "../tokens/IERC721.sol";
import "../vendor/solmate/ERC721.sol";
import "./PartyGovernance.sol";
import "../renderers/RendererStorage.sol";
/// @notice ERC721 functionality built on top of `PartyGovernance`.
contract PartyGovernanceNFT is PartyGovernance, ERC721, IERC2981 {
using LibSafeCast for uint256;
using LibSafeCast for uint96;
error OnlyMintAuthorityError(address actual, address expected);
// The `Globals` contract storing global configuration values. This contract
// is immutable and it’s address will never change.
IGlobals private immutable _GLOBALS;
/// @notice Who can call `mint()`. Usually this will be the crowdfund contract that
/// created the party.
address public mintAuthority;
/// @notice The number of tokens that have been minted.
uint96 public tokenCount;
/// @notice The total minted voting power.
/// Capped to `_governanceValues.totalVotingPower`
uint96 public mintedVotingPower;
/// @notice The voting power of `tokenId`.
mapping(uint256 => uint256) public votingPowerByTokenId;
modifier onlyMinter() {
address minter = mintAuthority;
if (msg.sender != minter) {
revert OnlyMintAuthorityError(msg.sender, minter);
}
_;
}
// Set the `Globals` contract. The name of symbol of ERC721 does not matter;
// it will be set in `_initialize()`.
constructor(IGlobals globals) PartyGovernance(globals) ERC721("", "") {
_GLOBALS = globals;
}
// Initialize storage for proxy contracts.
function _initialize(
string memory name_,
string memory symbol_,
uint256 customizationPresetId,
PartyGovernance.GovernanceOpts memory governanceOpts,
IERC721[] memory preciousTokens,
uint256[] memory preciousTokenIds,
address mintAuthority_
) internal {
PartyGovernance._initialize(governanceOpts, preciousTokens, preciousTokenIds);
name = name_;
symbol = symbol_;
mintAuthority = mintAuthority_;
if (customizationPresetId != 0) {
RendererStorage(_GLOBALS.getAddress(LibGlobals.GLOBAL_RENDERER_STORAGE))
.useCustomizationPreset(customizationPresetId);
}
}
/// @inheritdoc ERC721
function ownerOf(
uint256 tokenId
) public view override(ERC721, ITokenDistributorParty) returns (address owner) {
return ERC721.ownerOf(tokenId);
}
/// @inheritdoc EIP165
function supportsInterface(
bytes4 interfaceId
) public pure override(PartyGovernance, ERC721, IERC165) returns (bool) {
return
PartyGovernance.supportsInterface(interfaceId) ||
ERC721.supportsInterface(interfaceId) ||
interfaceId == type(IERC2981).interfaceId;
}
/// @inheritdoc ERC721
function tokenURI(uint256) public view override returns (string memory) {
_delegateToRenderer();
return ""; // Just to make the compiler happy.
}
/// @notice Returns a URI for the storefront-level metadata for your contract.
function contractURI() external view returns (string memory) {
_delegateToRenderer();
return ""; // Just to make the compiler happy.
}
/// @notice Called with the sale price to determine how much royalty
// is owed and to whom.
function royaltyInfo(uint256, uint256) external view returns (address, uint256) {
_delegateToRenderer();
return (address(0), 0); // Just to make the compiler happy.
}
/// @inheritdoc ITokenDistributorParty
function getDistributionShareOf(uint256 tokenId) external view returns (uint256) {
return (votingPowerByTokenId[tokenId] * 1e18) / _getTotalVotingPower();
}
/// @notice Mint a governance NFT for `owner` with `votingPower` and
/// immediately delegate voting power to `delegate.`
/// @param owner The owner of the NFT.
/// @param votingPower The voting power of the NFT.
/// @param delegate The address to delegate voting power to.
function mint(
address owner,
uint256 votingPower,
address delegate
) external onlyMinter onlyDelegateCall returns (uint256 tokenId) {
(uint96 tokenCount_, uint96 mintedVotingPower_) = (tokenCount, mintedVotingPower);
uint96 totalVotingPower = _governanceValues.totalVotingPower;
// Cap voting power to remaining unminted voting power supply.
uint96 votingPower_ = votingPower.safeCastUint256ToUint96();
if (totalVotingPower - mintedVotingPower_ < votingPower_) {
votingPower_ = totalVotingPower - mintedVotingPower_;
}
mintedVotingPower_ += votingPower_;
// Update state.
tokenId = tokenCount = tokenCount_ + 1;
mintedVotingPower = mintedVotingPower_;
votingPowerByTokenId[tokenId] = votingPower_;
// Use delegate from party over the one set during crowdfund.
address delegate_ = delegationsByVoter[owner];
if (delegate_ != address(0)) {
delegate = delegate_;
}
_adjustVotingPower(owner, votingPower_.safeCastUint96ToInt192(), delegate);
_safeMint(owner, tokenId);
}
/// @inheritdoc ERC721
function transferFrom(
address owner,
address to,
uint256 tokenId
) public override onlyDelegateCall {
// Transfer voting along with token.
_transferVotingPower(owner, to, votingPowerByTokenId[tokenId]);
super.transferFrom(owner, to, tokenId);
}
/// @inheritdoc ERC721
function safeTransferFrom(
address owner,
address to,
uint256 tokenId
) public override onlyDelegateCall {
// super.safeTransferFrom() will call transferFrom() first which will
// transfer voting power.
super.safeTransferFrom(owner, to, tokenId);
}
/// @inheritdoc ERC721
function safeTransferFrom(
address owner,
address to,
uint256 tokenId,
bytes calldata data
) public override onlyDelegateCall {
// super.safeTransferFrom() will call transferFrom() first which will
// transfer voting power.
super.safeTransferFrom(owner, to, tokenId, data);
}
/// @notice Relinquish the ability to call `mint()` by an authority.
function abdicate() external onlyMinter onlyDelegateCall {
delete mintAuthority;
}
function _delegateToRenderer() private view {
_readOnlyDelegateCall(
// Instance of IERC721Renderer.
_GLOBALS.getAddress(LibGlobals.GLOBAL_GOVERNANCE_NFT_RENDER_IMPL),
msg.data
);
assert(false); // Will not be reached.
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../tokens/IERC721.sol";
// Upgradeable proposals logic contract interface.
interface IProposalExecutionEngine {
struct ExecuteProposalParams {
uint256 proposalId;
bytes proposalData;
bytes progressData;
bytes extraData;
uint256 flags;
IERC721[] preciousTokens;
uint256[] preciousTokenIds;
}
function initialize(address oldImpl, bytes memory initData) external;
/// @notice Execute a proposal.
/// @dev Must be delegatecalled into by PartyGovernance.
/// If the proposal is incomplete, continues its next step (if possible).
/// If another proposal is incomplete, this will fail. Only one
/// incomplete proposal is allowed at a time.
/// @param params The data needed to execute the proposal.
/// @return nextProgressData Bytes to be passed into the next `execute()` call,
/// if the proposal execution is incomplete. Otherwise, empty bytes
/// to indicate the proposal is complete.
function executeProposal(
ExecuteProposalParams memory params
) external returns (bytes memory nextProgressData);
/// @notice Forcibly cancel an incomplete proposal.
/// @param proposalId The ID of the proposal to cancel.
/// @dev This is intended to be a last resort as it can leave a party in a
/// broken step. Whenever possible, proposals should be allowed to
/// complete their entire lifecycle.
function cancelProposal(uint256 proposalId) external;
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../tokens/IERC721.sol";
library LibProposal {
uint256 internal constant PROPOSAL_FLAG_UNANIMOUS = 0x1;
function isTokenPrecious(
IERC721 token,
IERC721[] memory preciousTokens
) internal pure returns (bool) {
for (uint256 i; i < preciousTokens.length; ++i) {
if (token == preciousTokens[i]) {
return true;
}
}
return false;
}
function isTokenIdPrecious(
IERC721 token,
uint256 tokenId,
IERC721[] memory preciousTokens,
uint256[] memory preciousTokenIds
) internal pure returns (bool) {
for (uint256 i; i < preciousTokens.length; ++i) {
if (token == preciousTokens[i] && tokenId == preciousTokenIds[i]) {
return true;
}
}
return false;
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "./IProposalExecutionEngine.sol";
import "../utils/LibRawResult.sol";
// The storage bucket shared by `PartyGovernance` and the `ProposalExecutionEngine`.
// Read this for more context on the pattern motivating this:
// https://github.com/dragonfly-xyz/useful-solidity-patterns/tree/main/patterns/explicit-storage-buckets
abstract contract ProposalStorage {
using LibRawResult for bytes;
struct SharedProposalStorage {
IProposalExecutionEngine engineImpl;
}
uint256 internal constant PROPOSAL_FLAG_UNANIMOUS = 0x1;
uint256 private constant SHARED_STORAGE_SLOT =
uint256(keccak256("ProposalStorage.SharedProposalStorage"));
function _getProposalExecutionEngine() internal view returns (IProposalExecutionEngine impl) {
return _getSharedProposalStorage().engineImpl;
}
function _setProposalExecutionEngine(IProposalExecutionEngine impl) internal {
_getSharedProposalStorage().engineImpl = impl;
}
function _initProposalImpl(IProposalExecutionEngine impl, bytes memory initData) internal {
SharedProposalStorage storage stor = _getSharedProposalStorage();
IProposalExecutionEngine oldImpl = stor.engineImpl;
stor.engineImpl = impl;
(bool s, bytes memory r) = address(impl).delegatecall(
abi.encodeCall(IProposalExecutionEngine.initialize, (address(oldImpl), initData))
);
if (!s) {
r.rawRevert();
}
}
function _getSharedProposalStorage() private pure returns (SharedProposalStorage storage stor) {
uint256 s = SHARED_STORAGE_SLOT;
assembly {
stor.slot := s
}
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "solmate/utils/SSTORE2.sol";
import "../utils/Multicall.sol";
contract RendererStorage is Multicall {
error AlreadySetError();
error NotOwnerError(address caller, address owner);
event OwnershipTransferred(address previousOwner, address newOwner);
uint256 constant CROWDFUND_CARD_DATA = 0;
uint256 constant PARTY_CARD_DATA = 1;
/// @notice Address allowed to store new data.
address public owner;
/// @notice Customization presets by ID, used for rendering cards. Begins at
/// 1, 0 is reserved to indicate in `getPresetFor()` that a
/// party instance use the preset set by the crowdfund instance that
/// created it.
mapping(uint256 => bytes) public customizationPresets;
/// @notice Customization preset used by a crowdfund or party instance.
mapping(address => uint256) public getPresetFor;
/// @notice Addresses where URI data chunks are stored.
mapping(uint256 => address) public files;
modifier onlyOwner() {
address owner_ = owner;
if (msg.sender != owner_) {
revert NotOwnerError(msg.sender, owner_);
}
_;
}
constructor(address _owner) {
// Set the address allowed to write new data.
owner = _owner;
// Write URI data used by V1 of the renderers:
files[CROWDFUND_CARD_DATA] = SSTORE2.write(
bytes(
'<path class="o" d="M118.4 419.5h5.82v1.73h-4.02v1.87h3.74v1.73h-3.74v1.94h4.11v1.73h-5.91v-9Zm9.93 1.76h-2.6v-1.76h7.06v1.76h-2.61v7.24h-1.85v-7.24Zm6.06-1.76h1.84v3.55h3.93v-3.55H142v9h-1.84v-3.67h-3.93v3.67h-1.84v-9Z"/><path class="o" d="M145 413a4 4 0 0 1 4 4v14a4 4 0 0 1-4 4H35a4 4 0 0 1-4-4v-14a4 4 0 0 1 4-4h110m0-1H35a5 5 0 0 0-5 5v14a5 5 0 0 0 5 5h110a5 5 0 0 0 5-5v-14a5 5 0 0 0-5-5Z"/><path d="M239.24 399.83h3.04c1.7 0 2.82 1 2.82 2.55 0 2.1-1.27 3.32-3.57 3.32h-1.97l-.71 3.3h-1.56l1.96-9.17Zm2.34 4.38c1.23 0 1.88-.58 1.88-1.68 0-.73-.49-1.2-1.48-1.2h-1.51l-.6 2.88h1.7Zm3.57 1.86c0-2.27 1.44-3.83 3.57-3.83 1.82 0 3.06 1.25 3.06 3.09 0 2.28-1.43 3.83-3.57 3.83-1.82 0-3.06-1.25-3.06-3.09Zm3.13 1.74c1.19 0 1.93-1.02 1.93-2.52 0-1.06-.62-1.69-1.56-1.69-1.19 0-1.93 1.02-1.93 2.52 0 1.06.62 1.69 1.56 1.69Zm4.74-5.41h1.49l.28 4.73 2.25-4.73h1.64l.23 4.77 2.25-4.77h1.56l-3.3 6.61h-1.62l-.25-5.04-2.42 5.04h-1.63l-.48-6.61Zm9.54 3.66c0-2.27 1.45-3.81 3.6-3.81 2 0 3.05 1.58 2.33 3.92h-4.46c0 1.1.81 1.68 2.05 1.68.8 0 1.45-.2 2.1-.59l-.31 1.46a4.2 4.2 0 0 1-2.04.44c-2.06 0-3.26-1.19-3.26-3.11Zm4.7-1.07c.12-.86-.31-1.46-1.22-1.46s-1.57.61-1.82 1.46h3.05Zm3.46-2.59h1.55l-.28 1.28c.81-1.7 2.56-1.36 2.77-1.29l-.35 1.46c-.18-.06-2.3-.63-2.82 1.68l-.74 3.48h-1.55l1.42-6.61Zm3.91 3.66c0-2.27 1.45-3.81 3.6-3.81 2 0 3.05 1.58 2.33 3.92h-4.46c0 1.1.81 1.68 2.05 1.68.8 0 1.45-.2 2.1-.59l-.31 1.46a4.2 4.2 0 0 1-2.04.44c-2.06 0-3.26-1.19-3.26-3.11Zm4.7-1.07c.12-.86-.31-1.46-1.22-1.46s-1.57.61-1.82 1.46h3.05Zm2.25 1.36c0-2.44 1.36-4.1 3.26-4.1 1 0 1.76.53 2.05 1.31l.79-3.72h1.55l-1.96 9.17h-1.55l.2-.92a2.15 2.15 0 0 1-1.92 1.08c-1.49 0-2.43-1.18-2.43-2.82Zm3 1.51c.88 0 1.51-.58 1.73-1.56l.17-.81c.24-1.1-.31-1.93-1.36-1.93-1.19 0-1.94 1.08-1.94 2.59 0 1.06.55 1.71 1.4 1.71Zm9.6-.01-.25 1.16h-1.55l1.96-9.17h1.55l-.73 3.47a2.35 2.35 0 0 1 1.99-1.05c1.49 0 2.35 1.16 2.35 2.76 0 2.52-1.36 4.16-3.21 4.16-.98 0-1.81-.53-2.1-1.32Zm1.83.01c1.16 0 1.87-1.06 1.87-2.61 0-1.04-.5-1.69-1.39-1.69s-1.52.56-1.73 1.55l-.17.79c-.24 1.14.34 1.97 1.42 1.97Zm5.68 1.16-1.04-6.62h1.52l.66 4.75 2.66-4.75h1.69l-5.31 9.13h-1.73l1.55-2.51Zm23.48-6.8a42.14 42.14 0 0 0-.75 6.01 43.12 43.12 0 0 0 5.58 2.35 42.54 42.54 0 0 0 5.58-2.35 45.32 45.32 0 0 0-.75-6.01c-.91-.79-2.6-2.21-4.83-3.66a42.5 42.5 0 0 0-4.83 3.66Zm13.07-7.95s.82-.29 1.76-.45a14.9 14.9 0 0 0-9.53-3.81c.66.71 1.28 1.67 1.84 2.75 1.84.22 4.07.7 5.92 1.51Zm-2.71 18.36c-2.06-.4-4.05-.97-5.53-1.51a38.65 38.65 0 0 1-5.53 1.51c.12 1.5.35 3.04.76 4.58 0 0 1.54 1.82 4.78 2.8 3.23-.98 4.78-2.8 4.78-2.8.4-1.53.64-3.08.76-4.58Zm-13.77-18.37a22.3 22.3 0 0 1 5.93-1.51 12.4 12.4 0 0 1 1.84-2.75 14.97 14.97 0 0 0-9.53 3.81c.95.16 1.76.45 1.76.45Zm-4.72 8.77a25.74 25.74 0 0 0 3.58 2.94 37.48 37.48 0 0 1 4.08-4.04c.27-1.56.77-3.57 1.46-5.55a25.24 25.24 0 0 0-4.34-1.63s-2.35.42-4.81 2.74c-.77 3.29.04 5.54.04 5.54Zm25.92 0s.81-2.25.04-5.54c-2.46-2.31-4.81-2.74-4.81-2.74-1.53.42-2.99.99-4.34 1.63a37.79 37.79 0 0 1 1.46 5.55 37.44 37.44 0 0 1 4.08 4.04 25.86 25.86 0 0 0 3.58-2.94Zm-26.38.2s-.66-.56-1.27-1.3c-.7 3.34-.27 6.93 1.46 10.16.28-.93.8-1.94 1.46-2.97a22.32 22.32 0 0 1-1.66-5.88Zm8.24 14.27a22.07 22.07 0 0 1-4.27-4.38c-1.22.06-2.36 0-3.3-.22a14.91 14.91 0 0 0 8.07 6.34c-.34-.9-.5-1.75-.5-1.75Zm18.6-14.27s.66-.56 1.27-1.3c.7 3.34.27 6.93-1.46 10.16-.28-.93-.8-1.94-1.46-2.97a22.32 22.32 0 0 0 1.66-5.88Zm-8.24 14.27a22.07 22.07 0 0 0 4.27-4.38c1.22.06 2.36 0 3.3-.22a14.91 14.91 0 0 1-8.07 6.34c.34-.9.5-1.75.5-1.75ZM330 391.84l-4.12 2.45 1.26 3.91h5.72l1.26-3.91-4.12-2.45Zm-11.4 19.74 4.18 2.35 2.75-3.05-2.86-4.95-4.02.86-.06 4.79Zm22.79 0-.06-4.79-4.02-.86-2.86 4.95 2.75 3.05 4.18-2.35Z" style="fill:#00c1fa"/><use height="300" transform="matrix(1 0 0 .09 29.85 444)" width="300.15" xlink:href="#a"/><use height="21.15" transform="translate(30 446.92)" width="300" xlink:href="#b"/><g><path d="m191.54 428.67-28.09-24.34A29.98 29.98 0 0 0 143.8 397H30a15 15 0 0 0-15 15v98a15 15 0 0 0 15 15h300a15 15 0 0 0 15-15v-59a15 15 0 0 0-15-15H211.19a30 30 0 0 1-19.65-7.33Z" style="fill:url(#i)"/></g></svg>'
)
);
files[PARTY_CARD_DATA] = SSTORE2.write(
bytes(
' d="M188 444.3h2.4l2.6 8.2 2.7-8.2h2.3l-3.7 10.7h-2.8l-3.5-10.7zm10.5 5.3c0-3.2 2.2-5.6 5.3-5.6 3.1 0 5.3 2.3 5.3 5.6 0 3.2-2.2 5.5-5.3 5.5-3.1.1-5.3-2.2-5.3-5.5zm5.3 3.5c1.8 0 3-1.3 3-3.4 0-2.1-1.1-3.5-3-3.5s-3 1.3-3 3.5c0 2.1 1.1 3.4 3 3.4zm8.7-6.7h-3.1v-2.1h8.4v2.1h-3.1v8.6h-2.2v-8.6zm6.9-2.1h2.2V455h-2.2v-10.7zm4.3 0h2.9l4 8.2v-8.2h2.1V455h-2.9l-4-8.2v8.2h-2.1v-10.7zm10.6 5.4c0-3.4 2.3-5.6 6-5.6 1.2 0 2.3.2 3.1.6v2.3c-.9-.6-1.9-.8-3.1-.8-2.4 0-3.8 1.3-3.8 3.5 0 2.1 1.3 3.4 3.5 3.4.5 0 .9-.1 1.3-.2v-2.2h-2.2v-1.9h4.3v5.6c-1 .5-2.2.8-3.4.8-3.5 0-5.7-2.2-5.7-5.5zm15.1-5.4h4.3c2.3 0 3.7 1.3 3.7 3.5s-1.4 3.5-3.7 3.5h-2.1v3.7h-2.2v-10.7zm4.1 5c1.1 0 1.6-.5 1.6-1.5s-.5-1.5-1.6-1.5h-1.9v2.9h1.9zm4.8.3c0-3.2 2.2-5.6 5.3-5.6 3.1 0 5.3 2.3 5.3 5.6 0 3.2-2.2 5.5-5.3 5.5-3.1.1-5.3-2.2-5.3-5.5zm5.3 3.5c1.8 0 3-1.3 3-3.4 0-2.1-1.1-3.5-3-3.5s-3 1.3-3 3.5c0 2.1 1.1 3.4 3 3.4zm5.8-8.8h2.3l1.7 7.8 1.9-7.8h2.4l1.8 7.8 1.8-7.8h2.3l-2.7 10.7h-2.5l-1.9-8.2-1.8 8.2h-2.5l-2.8-10.7zm15.4 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)
);
}
/// @notice Transfer ownership to a new owner.
/// @param newOwner The address to transfer ownership to.
function transferOwnership(address newOwner) external onlyOwner {
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
/// @notice Write data to be accessed by a given file key.
/// @param key The key to access the written data.
/// @param data The data to be written.
function writeFile(uint256 key, string memory data) external onlyOwner {
files[key] = SSTORE2.write(bytes(data));
}
/// @notice Read data using a given file key.
/// @param key The key to access the stored data.
/// @return data The data stored at the given key.
function readFile(uint256 key) external view returns (string memory data) {
return string(SSTORE2.read(files[key]));
}
/// @notice Create or set a customization preset for renderers to use.
/// @param id The ID of the customization preset.
/// @param customizationData Data decoded by renderers used to render the SVG according to the preset.
function createCustomizationPreset(
uint256 id,
bytes memory customizationData
) external onlyOwner {
customizationPresets[id] = customizationData;
}
/// @notice For crowdfund or party instances to set the customization preset they want to use.
/// @param id The ID of the customization preset.
function useCustomizationPreset(uint256 id) external {
getPresetFor[msg.sender] = id;
}
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8;
import "../vendor/solmate/ERC1155.sol";
import "../utils/EIP165.sol";
abstract contract ERC1155Receiver is EIP165, ERC1155TokenReceiverBase {
/// @inheritdoc EIP165
function supportsInterface(bytes4 interfaceId) public pure virtual override returns (bool) {
return
super.supportsInterface(interfaceId) ||
interfaceId == type(ERC1155TokenReceiverBase).interfaceId;
}
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8;
import "./IERC721Receiver.sol";
import "../utils/EIP165.sol";
import "../vendor/solmate/ERC721.sol";
/// @notice Mixin for contracts that want to receive ERC721 tokens.
/// @dev Use this instead of solmate's ERC721TokenReceiver because the
/// compiler has issues when overriding EIP165/IERC721Receiver functions.
abstract contract ERC721Receiver is IERC721Receiver, EIP165, ERC721TokenReceiver {
/// @inheritdoc IERC721Receiver
function onERC721Received(
address,
address,
uint256,
bytes memory
) public virtual override(IERC721Receiver, ERC721TokenReceiver) returns (bytes4) {
return IERC721Receiver.onERC721Received.selector;
}
/// @inheritdoc EIP165
function supportsInterface(bytes4 interfaceId) public pure virtual override returns (bool) {
return
EIP165.supportsInterface(interfaceId) ||
interfaceId == type(IERC721Receiver).interfaceId;
}
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8;
// Minimal ERC1155 interface.
interface IERC1155 {
event TransferSingle(
address indexed operator,
address indexed from,
address indexed to,
uint256 id,
uint256 amount
);
event TransferBatch(
address indexed operator,
address indexed from,
address indexed to,
uint256[] ids,
uint256[] amounts
);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function setApprovalForAll(address operator, bool approved) external;
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes calldata data
) external;
function safeBatchTransferFrom(
address from,
address to,
uint256[] calldata ids,
uint256[] calldata amounts,
bytes calldata data
) external;
function balanceOf(address owner, uint256 tokenId) external view returns (uint256);
function isApprovedForAll(address owner, address spender) external view returns (bool);
function balanceOfBatch(
address[] calldata owners,
uint256[] calldata ids
) external view returns (uint256[] memory balances);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8;
// Minimal ERC20 interface.
interface IERC20 {
event Transfer(address indexed owner, address indexed to, uint256 amount);
event Approval(address indexed owner, address indexed spender, uint256 allowance);
function transfer(address to, uint256 amount) external returns (bool);
function transferFrom(address from, address to, uint256 amount) external returns (bool);
function approve(address spender, uint256 allowance) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function balanceOf(address owner) external view returns (uint256);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8;
// Minimal ERC721 interface.
interface IERC721 {
event Transfer(address indexed owner, address indexed to, uint256 indexed tokenId);
event Approval(address indexed owner, address indexed operator, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function transferFrom(address from, address to, uint256 tokenId) external;
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
function safeTransferFrom(address from, address to, uint256 tokenId) external;
function approve(address operator, uint256 tokenId) external;
function setApprovalForAll(address operator, bool isApproved) external;
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function getApproved(uint256 tokenId) external view returns (address);
function isApprovedForAll(address owner, address operator) external view returns (bool);
function ownerOf(uint256 tokenId) external view returns (address);
function balanceOf(address owner) external view returns (uint256);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8;
interface IERC721Receiver {
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes memory data
) external returns (bytes4);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
abstract contract EIP165 {
/// @notice Query if a contract implements an interface.
/// @param interfaceId The interface identifier, as specified in ERC-165
/// @return `true` if the contract implements `interfaceId` and
/// `interfaceId` is not 0xffffffff, `false` otherwise
function supportsInterface(bytes4 interfaceId) public pure virtual returns (bool) {
return interfaceId == this.supportsInterface.selector;
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
// Base contract for all contracts intended to be delegatecalled into.
abstract contract Implementation {
error OnlyDelegateCallError();
error OnlyConstructorError();
address public immutable IMPL;
constructor() {
IMPL = address(this);
}
// Reverts if the current function context is not inside of a delegatecall.
modifier onlyDelegateCall() virtual {
if (address(this) == IMPL) {
revert OnlyDelegateCallError();
}
_;
}
// Reverts if the current function context is not inside of a constructor.
modifier onlyConstructor() {
if (address(this).code.length != 0) {
revert OnlyConstructorError();
}
_;
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
library LibAddress {
error EthTransferFailed(address receiver, bytes errData);
// Transfer ETH with full gas stipend.
function transferEth(address payable receiver, uint256 amount) internal {
if (amount == 0) return;
(bool s, bytes memory r) = receiver.call{ value: amount }("");
if (!s) {
revert EthTransferFailed(receiver, r);
}
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../tokens/IERC20.sol";
// Compatibility helpers for ERC20s.
library LibERC20Compat {
error NotATokenError(IERC20 token);
error TokenTransferFailedError(IERC20 token, address to, uint256 amount);
// Perform an `IERC20.transfer()` handling non-compliant implementations.
function compatTransfer(IERC20 token, address to, uint256 amount) internal {
(bool s, bytes memory r) = address(token).call(
abi.encodeCall(IERC20.transfer, (to, amount))
);
if (s) {
if (r.length == 0) {
uint256 cs;
assembly {
cs := extcodesize(token)
}
if (cs == 0) {
revert NotATokenError(token);
}
return;
}
if (abi.decode(r, (bool))) {
return;
}
}
revert TokenTransferFailedError(token, to, amount);
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
library LibRawResult {
// Revert with the data in `b`.
function rawRevert(bytes memory b) internal pure {
assembly {
revert(add(b, 32), mload(b))
}
}
// Return with the data in `b`.
function rawReturn(bytes memory b) internal pure {
assembly {
return(add(b, 32), mload(b))
}
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
library LibSafeCast {
error Uint256ToUint96CastOutOfRange(uint256 v);
error Uint256ToInt192CastOutOfRange(uint256 v);
error Int192ToUint96CastOutOfRange(int192 i192);
error Uint256ToInt128CastOutOfRangeError(uint256 u256);
error Uint256ToUint128CastOutOfRangeError(uint256 u256);
error Uint256ToUint40CastOutOfRangeError(uint256 u256);
function safeCastUint256ToUint96(uint256 v) internal pure returns (uint96) {
if (v > uint256(type(uint96).max)) {
revert Uint256ToUint96CastOutOfRange(v);
}
return uint96(v);
}
function safeCastUint256ToUint128(uint256 v) internal pure returns (uint128) {
if (v > uint256(type(uint128).max)) {
revert Uint256ToUint128CastOutOfRangeError(v);
}
return uint128(v);
}
function safeCastUint256ToInt192(uint256 v) internal pure returns (int192) {
if (v > uint256(uint192(type(int192).max))) {
revert Uint256ToInt192CastOutOfRange(v);
}
return int192(uint192(v));
}
function safeCastUint96ToInt192(uint96 v) internal pure returns (int192) {
return int192(uint192(v));
}
function safeCastInt192ToUint96(int192 i192) internal pure returns (uint96) {
if (i192 < 0 || i192 > int192(uint192(type(uint96).max))) {
revert Int192ToUint96CastOutOfRange(i192);
}
return uint96(uint192(i192));
}
function safeCastUint256ToInt128(uint256 x) internal pure returns (int128) {
if (x > uint256(uint128(type(int128).max))) {
revert Uint256ToInt128CastOutOfRangeError(x);
}
return int128(uint128(x));
}
function safeCastUint256ToUint40(uint256 x) internal pure returns (uint40) {
if (x > uint256(type(uint40).max)) {
revert Uint256ToUint40CastOutOfRangeError(x);
}
return uint40(x);
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../tokens/IERC721.sol";
import "./LibRawResult.sol";
library LibSafeERC721 {
using LibRawResult for bytes;
// Call `IERC721.ownerOf()` without reverting and return `address(0)` if:
// - `tokenID` does not exist.
// - `token` is an EOA
// - `token` is an empty contract
// - `token` is a "bad" implementation of ERC721 that returns nothing for
// `ownerOf()`
function safeOwnerOf(IERC721 token, uint256 tokenId) internal view returns (address owner) {
(bool s, bytes memory r) = address(token).staticcall(
abi.encodeCall(token.ownerOf, (tokenId))
);
if (!s || r.length < 32) {
return address(0);
}
return abi.decode(r, (address));
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "../utils/LibRawResult.sol";
abstract contract Multicall {
using LibRawResult for bytes;
/// @notice Perform multiple delegatecalls on ourselves.
function multicall(bytes[] calldata multicallData) external {
for (uint256 i; i < multicallData.length; ++i) {
(bool s, bytes memory r) = address(this).delegatecall(multicallData[i]);
if (!s) {
r.rawRevert();
}
}
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.17;
import "./LibRawResult.sol";
interface IReadOnlyDelegateCall {
// Marked `view` so that `_readOnlyDelegateCall` can be `view` as well.
function delegateCallAndRevert(address impl, bytes memory callData) external view;
}
// Inherited by contracts to perform read-only delegate calls.
abstract contract ReadOnlyDelegateCall {
using LibRawResult for bytes;
// Delegatecall into implement and revert with the raw result.
function delegateCallAndRevert(address impl, bytes memory callData) external {
// Attempt to gate to only `_readOnlyDelegateCall()` invocations.
require(msg.sender == address(this));
(bool s, bytes memory r) = impl.delegatecall(callData);
// Revert with success status and return data.
abi.encode(s, r).rawRevert();
}
// Perform a `delegateCallAndRevert()` then return the raw result data.
function _readOnlyDelegateCall(address impl, bytes memory callData) internal view {
try IReadOnlyDelegateCall(address(this)).delegateCallAndRevert(impl, callData) {
// Should never happen.
assert(false);
} catch (bytes memory r) {
(bool success, bytes memory resultData) = abi.decode(r, (bool, bytes));
if (!success) {
resultData.rawRevert();
}
resultData.rawReturn();
}
}
}
// SPDX-License-Identifier: AGPL-3.0-only
// Based on solmate commit 1681dc505f4897ef636f0435d01b1aa027fdafaf (v6.4.0)
// @ https://github.com/Rari-Capital/solmate/blob/1681dc505f4897ef636f0435d01b1aa027fdafaf/src/tokens/ERC1155.sol
// Only modified to inherit IERC1155 and rename ERC1155TokenReceiver -> ERC1155TokenReceiverBase.
pragma solidity ^0.8;
import "../../tokens/IERC1155.sol";
/// @notice Minimalist and gas efficient standard ERC1155 implementation.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC1155.sol)
abstract contract ERC1155 is IERC1155 {
/*//////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event URI(string value, uint256 indexed id);
/*//////////////////////////////////////////////////////////////
ERC1155 STORAGE
//////////////////////////////////////////////////////////////*/
mapping(address => mapping(uint256 => uint256)) public balanceOf;
mapping(address => mapping(address => bool)) public isApprovedForAll;
/*//////////////////////////////////////////////////////////////
METADATA LOGIC
//////////////////////////////////////////////////////////////*/
function uri(uint256 id) public view virtual returns (string memory);
/*//////////////////////////////////////////////////////////////
ERC1155 LOGIC
//////////////////////////////////////////////////////////////*/
function setApprovalForAll(address operator, bool approved) public virtual {
isApprovedForAll[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes calldata data
) public virtual {
require(msg.sender == from || isApprovedForAll[from][msg.sender], "NOT_AUTHORIZED");
balanceOf[from][id] -= amount;
balanceOf[to][id] += amount;
emit TransferSingle(msg.sender, from, to, id, amount);
require(
to.code.length == 0
? to != address(0)
: ERC1155TokenReceiverBase(to).onERC1155Received(
msg.sender,
from,
id,
amount,
data
) == ERC1155TokenReceiverBase.onERC1155Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeBatchTransferFrom(
address from,
address to,
uint256[] calldata ids,
uint256[] calldata amounts,
bytes calldata data
) public virtual {
require(ids.length == amounts.length, "LENGTH_MISMATCH");
require(msg.sender == from || isApprovedForAll[from][msg.sender], "NOT_AUTHORIZED");
// Storing these outside the loop saves ~15 gas per iteration.
uint256 id;
uint256 amount;
for (uint256 i; i < ids.length; ) {
id = ids[i];
amount = amounts[i];
balanceOf[from][id] -= amount;
balanceOf[to][id] += amount;
// An array can't have a total length
// larger than the max uint256 value.
unchecked {
++i;
}
}
emit TransferBatch(msg.sender, from, to, ids, amounts);
require(
to.code.length == 0
? to != address(0)
: ERC1155TokenReceiverBase(to).onERC1155BatchReceived(
msg.sender,
from,
ids,
amounts,
data
) == ERC1155TokenReceiverBase.onERC1155BatchReceived.selector,
"UNSAFE_RECIPIENT"
);
}
function balanceOfBatch(
address[] calldata owners,
uint256[] calldata ids
) public view virtual returns (uint256[] memory balances) {
require(owners.length == ids.length, "LENGTH_MISMATCH");
balances = new uint256[](owners.length);
// Unchecked because the only math done is incrementing
// the array index counter which cannot possibly overflow.
unchecked {
for (uint256 i; i < owners.length; ++i) {
balances[i] = balanceOf[owners[i]][ids[i]];
}
}
}
/*//////////////////////////////////////////////////////////////
ERC165 LOGIC
//////////////////////////////////////////////////////////////*/
function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
return
interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165
interfaceId == 0xd9b67a26 || // ERC165 Interface ID for ERC1155
interfaceId == 0x0e89341c; // ERC165 Interface ID for ERC1155MetadataURI
}
/*//////////////////////////////////////////////////////////////
INTERNAL MINT/BURN LOGIC
//////////////////////////////////////////////////////////////*/
function _mint(address to, uint256 id, uint256 amount, bytes memory data) internal virtual {
balanceOf[to][id] += amount;
emit TransferSingle(msg.sender, address(0), to, id, amount);
require(
to.code.length == 0
? to != address(0)
: ERC1155TokenReceiverBase(to).onERC1155Received(
msg.sender,
address(0),
id,
amount,
data
) == ERC1155TokenReceiverBase.onERC1155Received.selector,
"UNSAFE_RECIPIENT"
);
}
function _batchMint(
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {
uint256 idsLength = ids.length; // Saves MLOADs.
require(idsLength == amounts.length, "LENGTH_MISMATCH");
for (uint256 i; i < idsLength; ) {
balanceOf[to][ids[i]] += amounts[i];
// An array can't have a total length
// larger than the max uint256 value.
unchecked {
++i;
}
}
emit TransferBatch(msg.sender, address(0), to, ids, amounts);
require(
to.code.length == 0
? to != address(0)
: ERC1155TokenReceiverBase(to).onERC1155BatchReceived(
msg.sender,
address(0),
ids,
amounts,
data
) == ERC1155TokenReceiverBase.onERC1155BatchReceived.selector,
"UNSAFE_RECIPIENT"
);
}
function _batchBurn(
address from,
uint256[] memory ids,
uint256[] memory amounts
) internal virtual {
uint256 idsLength = ids.length; // Saves MLOADs.
require(idsLength == amounts.length, "LENGTH_MISMATCH");
for (uint256 i; i < idsLength; ) {
balanceOf[from][ids[i]] -= amounts[i];
// An array can't have a total length
// larger than the max uint256 value.
unchecked {
++i;
}
}
emit TransferBatch(msg.sender, from, address(0), ids, amounts);
}
function _burn(address from, uint256 id, uint256 amount) internal virtual {
balanceOf[from][id] -= amount;
emit TransferSingle(msg.sender, from, address(0), id, amount);
}
}
/// @notice A generic interface for a contract which properly accepts ERC1155 tokens.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC1155.sol)
abstract contract ERC1155TokenReceiverBase {
function onERC1155Received(
address,
address,
uint256,
uint256,
bytes calldata
) external virtual returns (bytes4) {
return ERC1155TokenReceiverBase.onERC1155Received.selector;
}
function onERC1155BatchReceived(
address,
address,
uint256[] calldata,
uint256[] calldata,
bytes calldata
) external virtual returns (bytes4) {
return ERC1155TokenReceiverBase.onERC1155BatchReceived.selector;
}
}
// SPDX-License-Identifier: AGPL-3.0-only
// Based on solmate commit 1681dc505f4897ef636f0435d01b1aa027fdafaf (v6.4.0)
// @ https://github.com/Rari-Capital/solmate/blob/1681dc505f4897ef636f0435d01b1aa027fdafaf/src/tokens/ERC1155.sol
// Only modified to inherit IERC721 and EIP165.
pragma solidity >=0.8.0;
// NOTE: Only modified to inherit IERC20 and EIP165
import "../../tokens/IERC721.sol";
import "../../utils/EIP165.sol";
/// @notice Modern, minimalist, and gas efficient ERC-721 implementation.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC721.sol)
abstract contract ERC721 is IERC721, EIP165 {
/*//////////////////////////////////////////////////////////////
METADATA STORAGE/LOGIC
//////////////////////////////////////////////////////////////*/
string public name;
string public symbol;
function tokenURI(uint256 id /* view */) public virtual returns (string memory);
/*//////////////////////////////////////////////////////////////
ERC721 BALANCE/OWNER STORAGE
//////////////////////////////////////////////////////////////*/
mapping(uint256 => address) internal _ownerOf;
mapping(address => uint256) internal _balanceOf;
function ownerOf(uint256 id) public view virtual returns (address owner) {
require((owner = _ownerOf[id]) != address(0), "NOT_MINTED");
}
function balanceOf(address owner) public view virtual returns (uint256) {
require(owner != address(0), "ZERO_ADDRESS");
return _balanceOf[owner];
}
/*//////////////////////////////////////////////////////////////
ERC721 APPROVAL STORAGE
//////////////////////////////////////////////////////////////*/
mapping(uint256 => address) public getApproved;
mapping(address => mapping(address => bool)) public isApprovedForAll;
/*//////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////*/
constructor(string memory _name, string memory _symbol) {
name = _name;
symbol = _symbol;
}
/*//////////////////////////////////////////////////////////////
ERC721 LOGIC
//////////////////////////////////////////////////////////////*/
function approve(address spender, uint256 id) public virtual {
address owner = _ownerOf[id];
require(msg.sender == owner || isApprovedForAll[owner][msg.sender], "NOT_AUTHORIZED");
getApproved[id] = spender;
emit Approval(owner, spender, id);
}
function setApprovalForAll(address operator, bool approved) public virtual {
isApprovedForAll[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
function transferFrom(address from, address to, uint256 id) public virtual {
require(from == _ownerOf[id], "WRONG_FROM");
require(to != address(0), "INVALID_RECIPIENT");
require(
msg.sender == from ||
isApprovedForAll[from][msg.sender] ||
msg.sender == getApproved[id],
"NOT_AUTHORIZED"
);
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
unchecked {
_balanceOf[from]--;
_balanceOf[to]++;
}
_ownerOf[id] = to;
delete getApproved[id];
emit Transfer(from, to, id);
}
function safeTransferFrom(address from, address to, uint256 id) public virtual {
transferFrom(from, to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function safeTransferFrom(
address from,
address to,
uint256 id,
bytes calldata data
) public virtual {
transferFrom(from, to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, data) ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
/*//////////////////////////////////////////////////////////////
ERC165 LOGIC
//////////////////////////////////////////////////////////////*/
function supportsInterface(bytes4 interfaceId) public pure virtual override returns (bool) {
// NOTE: modified from original to call super.
return
super.supportsInterface(interfaceId) ||
interfaceId == 0x80ac58cd || // ERC165 Interface ID for ERC721
interfaceId == 0x5b5e139f; // ERC165 Interface ID for ERC721Metadata
}
/*//////////////////////////////////////////////////////////////
INTERNAL MINT/BURN LOGIC
//////////////////////////////////////////////////////////////*/
function _mint(address to, uint256 id) internal virtual {
require(to != address(0), "INVALID_RECIPIENT");
require(_ownerOf[id] == address(0), "ALREADY_MINTED");
// Counter overflow is incredibly unrealistic.
unchecked {
_balanceOf[to]++;
}
_ownerOf[id] = to;
emit Transfer(address(0), to, id);
}
function _burn(uint256 id) internal virtual {
address owner = _ownerOf[id];
require(owner != address(0), "NOT_MINTED");
// Ownership check above ensures no underflow.
unchecked {
_balanceOf[owner]--;
}
delete _ownerOf[id];
delete getApproved[id];
emit Transfer(owner, address(0), id);
}
/*//////////////////////////////////////////////////////////////
INTERNAL SAFE MINT LOGIC
//////////////////////////////////////////////////////////////*/
function _safeMint(address to, uint256 id) internal virtual {
_mint(to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, "") ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
function _safeMint(address to, uint256 id, bytes memory data) internal virtual {
_mint(to, id);
require(
to.code.length == 0 ||
ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, data) ==
ERC721TokenReceiver.onERC721Received.selector,
"UNSAFE_RECIPIENT"
);
}
}
/// @notice A generic interface for a contract which properly accepts ERC721 tokens.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC721.sol)
abstract contract ERC721TokenReceiver {
function onERC721Received(
address,
address,
uint256,
bytes calldata
) external virtual returns (bytes4) {
return ERC721TokenReceiver.onERC721Received.selector;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)
pragma solidity ^0.8.0;
import "../utils/introspection/IERC165.sol";
/**
* @dev Interface for the NFT Royalty Standard.
*
* A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
* support for royalty payments across all NFT marketplaces and ecosystem participants.
*
* _Available since v4.5._
*/
interface IERC2981 is IERC165 {
/**
* @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
* exchange. The royalty amount is denominated and should be paid in that same unit of exchange.
*/
function royaltyInfo(uint256 tokenId, uint256 salePrice)
external
view
returns (address receiver, uint256 royaltyAmount);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/MerkleProof.sol)
pragma solidity ^0.8.0;
/**
* @dev These functions deal with verification of Merkle Tree proofs.
*
* The tree and the proofs can be generated using our
* https://github.com/OpenZeppelin/merkle-tree[JavaScript library].
* You will find a quickstart guide in the readme.
*
* WARNING: You should avoid using leaf values that are 64 bytes long prior to
* hashing, or use a hash function other than keccak256 for hashing leaves.
* This is because the concatenation of a sorted pair of internal nodes in
* the merkle tree could be reinterpreted as a leaf value.
* OpenZeppelin's JavaScript library generates merkle trees that are safe
* against this attack out of the box.
*/
library MerkleProof {
/**
* @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
* defined by `root`. For this, a `proof` must be provided, containing
* sibling hashes on the branch from the leaf to the root of the tree. Each
* pair of leaves and each pair of pre-images are assumed to be sorted.
*/
function verify(
bytes32[] memory proof,
bytes32 root,
bytes32 leaf
) internal pure returns (bool) {
return processProof(proof, leaf) == root;
}
/**
* @dev Calldata version of {verify}
*
* _Available since v4.7._
*/
function verifyCalldata(
bytes32[] calldata proof,
bytes32 root,
bytes32 leaf
) internal pure returns (bool) {
return processProofCalldata(proof, leaf) == root;
}
/**
* @dev Returns the rebuilt hash obtained by traversing a Merkle tree up
* from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
* hash matches the root of the tree. When processing the proof, the pairs
* of leafs & pre-images are assumed to be sorted.
*
* _Available since v4.4._
*/
function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
bytes32 computedHash = leaf;
for (uint256 i = 0; i < proof.length; i++) {
computedHash = _hashPair(computedHash, proof[i]);
}
return computedHash;
}
/**
* @dev Calldata version of {processProof}
*
* _Available since v4.7._
*/
function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) {
bytes32 computedHash = leaf;
for (uint256 i = 0; i < proof.length; i++) {
computedHash = _hashPair(computedHash, proof[i]);
}
return computedHash;
}
/**
* @dev Returns true if the `leaves` can be simultaneously proven to be a part of a merkle tree defined by
* `root`, according to `proof` and `proofFlags` as described in {processMultiProof}.
*
* CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
*
* _Available since v4.7._
*/
function multiProofVerify(
bytes32[] memory proof,
bool[] memory proofFlags,
bytes32 root,
bytes32[] memory leaves
) internal pure returns (bool) {
return processMultiProof(proof, proofFlags, leaves) == root;
}
/**
* @dev Calldata version of {multiProofVerify}
*
* CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
*
* _Available since v4.7._
*/
function multiProofVerifyCalldata(
bytes32[] calldata proof,
bool[] calldata proofFlags,
bytes32 root,
bytes32[] memory leaves
) internal pure returns (bool) {
return processMultiProofCalldata(proof, proofFlags, leaves) == root;
}
/**
* @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction
* proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another
* leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false
* respectively.
*
* CAUTION: Not all merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree
* is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the
* tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer).
*
* _Available since v4.7._
*/
function processMultiProof(
bytes32[] memory proof,
bool[] memory proofFlags,
bytes32[] memory leaves
) internal pure returns (bytes32 merkleRoot) {
// This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by
// consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
// `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
// the merkle tree.
uint256 leavesLen = leaves.length;
uint256 totalHashes = proofFlags.length;
// Check proof validity.
require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof");
// The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
// `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
bytes32[] memory hashes = new bytes32[](totalHashes);
uint256 leafPos = 0;
uint256 hashPos = 0;
uint256 proofPos = 0;
// At each step, we compute the next hash using two values:
// - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
// get the next hash.
// - depending on the flag, either another value for the "main queue" (merging branches) or an element from the
// `proof` array.
for (uint256 i = 0; i < totalHashes; i++) {
bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
bytes32 b = proofFlags[i]
? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++])
: proof[proofPos++];
hashes[i] = _hashPair(a, b);
}
if (totalHashes > 0) {
return hashes[totalHashes - 1];
} else if (leavesLen > 0) {
return leaves[0];
} else {
return proof[0];
}
}
/**
* @dev Calldata version of {processMultiProof}.
*
* CAUTION: Not all merkle trees admit multiproofs. See {processMultiProof} for details.
*
* _Available since v4.7._
*/
function processMultiProofCalldata(
bytes32[] calldata proof,
bool[] calldata proofFlags,
bytes32[] memory leaves
) internal pure returns (bytes32 merkleRoot) {
// This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by
// consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
// `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
// the merkle tree.
uint256 leavesLen = leaves.length;
uint256 totalHashes = proofFlags.length;
// Check proof validity.
require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof");
// The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
// `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
bytes32[] memory hashes = new bytes32[](totalHashes);
uint256 leafPos = 0;
uint256 hashPos = 0;
uint256 proofPos = 0;
// At each step, we compute the next hash using two values:
// - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
// get the next hash.
// - depending on the flag, either another value for the "main queue" (merging branches) or an element from the
// `proof` array.
for (uint256 i = 0; i < totalHashes; i++) {
bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
bytes32 b = proofFlags[i]
? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++])
: proof[proofPos++];
hashes[i] = _hashPair(a, b);
}
if (totalHashes > 0) {
return hashes[totalHashes - 1];
} else if (leavesLen > 0) {
return leaves[0];
} else {
return proof[0];
}
}
function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) {
return a < b ? _efficientHash(a, b) : _efficientHash(b, a);
}
function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
/// @solidity memory-safe-assembly
assembly {
mstore(0x00, a)
mstore(0x20, b)
value := keccak256(0x00, 0x40)
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;
/// @notice Read and write to persistent storage at a fraction of the cost.
/// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/SSTORE2.sol)
/// @author Modified from 0xSequence (https://github.com/0xSequence/sstore2/blob/master/contracts/SSTORE2.sol)
library SSTORE2 {
uint256 internal constant DATA_OFFSET = 1; // We skip the first byte as it's a STOP opcode to ensure the contract can't be called.
/*//////////////////////////////////////////////////////////////
WRITE LOGIC
//////////////////////////////////////////////////////////////*/
function write(bytes memory data) internal returns (address pointer) {
// Prefix the bytecode with a STOP opcode to ensure it cannot be called.
bytes memory runtimeCode = abi.encodePacked(hex"00", data);
bytes memory creationCode = abi.encodePacked(
//---------------------------------------------------------------------------------------------------------------//
// Opcode | Opcode + Arguments | Description | Stack View //
//---------------------------------------------------------------------------------------------------------------//
// 0x60 | 0x600B | PUSH1 11 | codeOffset //
// 0x59 | 0x59 | MSIZE | 0 codeOffset //
// 0x81 | 0x81 | DUP2 | codeOffset 0 codeOffset //
// 0x38 | 0x38 | CODESIZE | codeSize codeOffset 0 codeOffset //
// 0x03 | 0x03 | SUB | (codeSize - codeOffset) 0 codeOffset //
// 0x80 | 0x80 | DUP | (codeSize - codeOffset) (codeSize - codeOffset) 0 codeOffset //
// 0x92 | 0x92 | SWAP3 | codeOffset (codeSize - codeOffset) 0 (codeSize - codeOffset) //
// 0x59 | 0x59 | MSIZE | 0 codeOffset (codeSize - codeOffset) 0 (codeSize - codeOffset) //
// 0x39 | 0x39 | CODECOPY | 0 (codeSize - codeOffset) //
// 0xf3 | 0xf3 | RETURN | //
//---------------------------------------------------------------------------------------------------------------//
hex"60_0B_59_81_38_03_80_92_59_39_F3", // Returns all code in the contract except for the first 11 (0B in hex) bytes.
runtimeCode // The bytecode we want the contract to have after deployment. Capped at 1 byte less than the code size limit.
);
/// @solidity memory-safe-assembly
assembly {
// Deploy a new contract with the generated creation code.
// We start 32 bytes into the code to avoid copying the byte length.
pointer := create(0, add(creationCode, 32), mload(creationCode))
}
require(pointer != address(0), "DEPLOYMENT_FAILED");
}
/*//////////////////////////////////////////////////////////////
READ LOGIC
//////////////////////////////////////////////////////////////*/
function read(address pointer) internal view returns (bytes memory) {
return readBytecode(pointer, DATA_OFFSET, pointer.code.length - DATA_OFFSET);
}
function read(address pointer, uint256 start) internal view returns (bytes memory) {
start += DATA_OFFSET;
return readBytecode(pointer, start, pointer.code.length - start);
}
function read(
address pointer,
uint256 start,
uint256 end
) internal view returns (bytes memory) {
start += DATA_OFFSET;
end += DATA_OFFSET;
require(pointer.code.length >= end, "OUT_OF_BOUNDS");
return readBytecode(pointer, start, end - start);
}
/*//////////////////////////////////////////////////////////////
INTERNAL HELPER LOGIC
//////////////////////////////////////////////////////////////*/
function readBytecode(
address pointer,
uint256 start,
uint256 size
) private view returns (bytes memory data) {
/// @solidity memory-safe-assembly
assembly {
// Get a pointer to some free memory.
data := mload(0x40)
// Update the free memory pointer to prevent overriding our data.
// We use and(x, not(31)) as a cheaper equivalent to sub(x, mod(x, 32)).
// Adding 31 to size and running the result through the logic above ensures
// the memory pointer remains word-aligned, following the Solidity convention.
mstore(0x40, add(data, and(add(add(size, 32), 31), not(31))))
// Store the size of the data in the first 32 byte chunk of free memory.
mstore(data, size)
// Copy the code into memory right after the 32 bytes we used to store the size.
extcodecopy(pointer, add(data, 32), start, size)
}
}
}