[SI] VaultHubViewer contract

contracts/0.8.25/vaults/VaultHubViewerV1.sol

@@ -0,0 +1,148 @@
+// SPDX-FileCopyrightText: 2024 Lido <[email protected]>
+// SPDX-License-Identifier: GPL-3.0
+
+// See contracts/COMPILERS.md
+pragma solidity 0.8.25;
+import {IStakingVault} from "./interfaces/IStakingVault.sol";
+
+interface IDashboardACL {
+    function getRoleMember(bytes32 role, uint256 index) external view returns (address);
+
+    function hasRole(bytes32 role, address account) external view returns (bool);
+}
+
+interface IVault is IStakingVault {
+    function owner() external view returns (address);
+}
+
+interface IVaultHub {
+    function vaultsCount() external view returns (uint256);
+
+    function vault(uint256 _index) external view returns (IVault);
+}
+
+contract VaultHubViewerV1 {
+    bytes32 constant strictTrue = keccak256(hex"0000000000000000000000000000000000000000000000000000000000000001");
+
+    IVaultHub public immutable vaultHub;
+    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
+
+    constructor(address _vaultHubAddress) {
+        if (_vaultHubAddress == address(0)) revert ZeroArgument("_vaultHubAddress");
+        vaultHub = IVaultHub(_vaultHubAddress);
+    }
+
+    /// @notice Checks if a given address is a contract
+    /// @param account The address to check
+    /// @return True if the address is a contract, false otherwise
+    function isContract(address account) public view returns (bool) {
+        uint256 size;
+        assembly {
+            size := extcodesize(account)
+        }
+        return size > 0;
+    }
+
+    /// @notice Checks if a given address is the owner of a vault
+    /// @param vault The vault to check
+    /// @param _owner The address to check
+    /// @return True if the address is the owner, false otherwise
+    function isOwner(IVault vault, address _owner) public view returns (bool) {
+        address vaultOwner = vault.owner();
+        if (vaultOwner == _owner) {
+            return true;
+        }
+
+        return _checkHasRole(vaultOwner, _owner, DEFAULT_ADMIN_ROLE);
+    }
+
+    /// @notice Checks if a given address has a given role on a vault owner contract
+    /// @param vault The vault to check
+    /// @param _member The address to check
+    /// @param _role The role to check
+    /// @return True if the address has the role, false otherwise
+    function hasRole(IVault vault, address _member, bytes32 _role) public view returns (bool) {
+        address vaultOwner = vault.owner();
+        if (vaultOwner == address(0)) {
+            return false;
+        }
+
+        return _checkHasRole(vaultOwner, _member, _role);
+    }
+
+    /// @notice Returns all vaults owned by a given address
+    /// @param _owner Address of the owner
+    /// @return An array of vaults owned by the given address
+    function vaultsByOwner(address _owner) public view returns (IVault[] memory) {
+        uint256 count = vaultHub.vaultsCount();
+        IVault[] memory vaults = new IVault[](count);
+
+        // Populate the array with the owner's vaults
+        uint256 valid = 0;
+
+        // Populate the array with the owner's vaults
+        for (uint256 i = 0; i < count; i++) {
+            IVault vaultInstance = IVault(vaultHub.vault(i));
+            if (isOwner(vaultInstance, _owner)) {
+                vaults[valid] = vaultHub.vault(i);
+                valid++;
+            }
+        }
+
+        return _filterNonZeroVaults(vaults, valid);
+    }
+
+    /// @notice Returns all vaults with a given role on a given address
+    /// @param _role Role to check
+    /// @param _member Address to check
+    /// @return An array of vaults with the given role on the given address
+    function vaultsByRole(bytes32 _role, address _member) public view returns (IVault[] memory) {
+        uint256 count = vaultHub.vaultsCount();
+        IVault[] memory vaults = new IVault[](count);
+
+        uint256 valid = 0;
+        for (uint256 i = 0; i < count; i++) {
+            if (hasRole(vaultHub.vault(i), _member, _role)) {
+                vaults[valid] = vaultHub.vault(i);
+                valid++;
+            }
+        }
+
+        return _filterNonZeroVaults(vaults, valid);
+    }
+
+    /// @notice safely returns if role member has given role
+    /// @param _contract that can have ACL or not
+    /// @param _member addrress to check for role
+    /// @return _role ACL role bytes
+    function _checkHasRole(address _contract, address _member, bytes32 _role) internal view returns (bool) {
+        if (!isContract(_contract)) return false;
+
+        bytes memory payload = abi.encodeWithSignature("hasRole(bytes32,address)", _role, _member);
+        (bool success, bytes memory result) = _contract.staticcall(payload);
+
+        if (success && keccak256(result) == strictTrue) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    /// @notice Filters out zero address vaults from an array
+    /// @param _vaults Array of vaults to filter
+    /// @param _validCount number of non-zero vaults
+    /// @return filtered An array of non-zero vaults
+    function _filterNonZeroVaults(
+        IVault[] memory _vaults,
+        uint256 _validCount
+    ) internal pure returns (IVault[] memory filtered) {
+        filtered = new IVault[](_validCount);
+        for (uint256 i = 0; i < _validCount; i++) {
+            filtered[i] = _vaults[i];
+        }
+    }
+
+    /// @notice Error for zero address arguments
+    /// @param argName Name of the argument that is zero
+    error ZeroArgument(string argName);
+}

test/0.8.25/vaults/vault-hub-viewer/contracts/CustomOwner__MockForHubViewer.sol

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+// SPDX-License-Identifier: UNLICENSED
+// for testing purposes only
+
+pragma solidity 0.8.25;
+
+import {VaultHub} from "contracts/0.8.25/vaults/VaultHub.sol";
+
+//
+// This mock represents custom Vault owner contract, that does not have ACL e.g. Safe
+//
+contract CustomOwner__MockForHubViewer {
+    bool public shouldRevertFallback;
+
+    constructor() {
+        shouldRevertFallback = true;
+    }
+
+    function setShouldRevertFallback(bool _shouldRevertFallback) external {
+        shouldRevertFallback = _shouldRevertFallback;
+    }
+
+    fallback() external {
+        if (shouldRevertFallback) revert("fallback");
+    }
+
+    receive() external payable {
+        if (shouldRevertFallback) {
+            revert("fallback");
+        }
+    }
+}

test/0.8.25/vaults/vault-hub-viewer/contracts/VaultHub__MockForHubViewer.sol

@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: UNLICENSED
+// for testing purposes only
+
+pragma solidity 0.8.25;
+
+import {VaultHub} from "contracts/0.8.25/vaults/VaultHub.sol";
+import {IStakingVault} from "contracts/0.8.25/vaults/interfaces/IStakingVault.sol";
+
+contract IStETH {
+    function mintExternalShares(address _receiver, uint256 _amountOfShares) external {}
+
+    function burnExternalShares(uint256 _amountOfShares) external {}
+}
+
+contract VaultHub__MockForHubViewer {
+    uint256 internal constant BPS_BASE = 100_00;
+    IStETH public immutable steth;
+    // keccak256(abi.encode(uint256(keccak256("VaultHub")) - 1)) & ~bytes32(uint256(0xff))
+    bytes32 private constant VAULT_HUB_STORAGE_LOCATION =
+        0xb158a1a9015c52036ff69e7937a7bb424e82a8c4cbec5c5309994af06d825300;
+
+    constructor(IStETH _steth) {
+        steth = _steth;
+    }
+
+    event Mock__VaultDisconnected(address vault);
+    event Mock__Rebalanced(uint256 amount);
+
+    mapping(address => VaultHub.VaultSocket) public vaultSockets;
+
+    function mock__setVaultSocket(address _vault, VaultHub.VaultSocket memory socket) external {
+        vaultSockets[_vault] = socket;
+    }
+
+    function mock_vaultLock(address _vault, uint256 amount) external {
+        IStakingVault(_vault).lock(amount);
+    }
+
+    function vaultSocket(address _vault) external view returns (VaultHub.VaultSocket memory) {
+        return vaultSockets[_vault];
+    }
+
+    function vaultSocketIndex(address _vault) public view returns (uint256) {
+        return _getVaultHubStorage().vaultIndex[_vault];
+    }
+
+    function vaultsCount() public view returns (uint256) {
+        return _getVaultHubStorage().sockets.length;
+    }
+
+    function vault(uint256 _index) public view returns (address) {
+        return _getVaultHubStorage().sockets[_index].vault;
+    }
+
+    function mock_vaultSocket() public view returns (VaultHub.VaultSocket[] memory) {
+        return _getVaultHubStorage().sockets;
+    }
+
+    function disconnectVault(address _vault) external {
+        emit Mock__VaultDisconnected(_vault);
+    }
+
+    function mintSharesBackedByVault(address /* vault */, address recipient, uint256 amount) external {
+        steth.mintExternalShares(recipient, amount);
+    }
+
+    function burnSharesBackedByVault(address /* vault */, uint256 amount) external {
+        steth.burnExternalShares(amount);
+    }
+
+    function voluntaryDisconnect(address _vault) external {
+        emit Mock__VaultDisconnected(_vault);
+    }
+
+    function rebalance() external payable {
+        emit Mock__Rebalanced(msg.value);
+    }
+
+    function mock_connectVault(address _vault) external {
+        VaultHub.VaultHubStorage storage $ = _getVaultHubStorage();
+
+        VaultHub.VaultSocket memory vr = VaultHub.VaultSocket(
+            _vault,
+            0, // sharesMinted
+            uint96(0),
+            uint16(0),
+            uint16(0),
+            uint16(0),
+            false // isDisconnected
+        );
+
+        $.vaultIndex[_vault] = $.sockets.length;
+        $.sockets.push(vr);
+    }
+
+    function _getVaultHubStorage() private pure returns (VaultHub.VaultHubStorage storage $) {
+        assembly {
+            $.slot := VAULT_HUB_STORAGE_LOCATION
+        }
+    }
+}