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zeekay
c778d7405b
- Full app extraction from zoo monorepo (source only) - Configured for GitHub Pages deployment - Static export enabled - Custom domain: zoo.fund - Excludes node_modules and build artifacts
47 lines
1.9 KiB
Solidity
47 lines
1.9 KiB
Solidity
// SPDX-License-Identifier: AGPL-3.0
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pragma solidity ^0.8.30;
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/**
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* @title IFreezable
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* @notice Minimal interface for contracts that can be frozen
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* @dev This interface defines the core freeze state that guards need to check.
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* It allows different freeze mechanisms (voting-based, time-based, etc.) to be
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* used interchangeably by guards without coupling to specific implementations.
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*
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* Key design principles:
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* - Minimal surface area - only what guards actually need
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* - No assumptions about freeze mechanism (voting, multisig, time-based, etc.)
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* - Clear semantics for freeze state and timing
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*
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* Implementations may add their own mechanisms for freezing/unfreezing,
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* but must provide these two view functions for guard compatibility.
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*/
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interface IFreezable {
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/**
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* @notice Checks if the DAO is currently frozen
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* @dev This should return the current freeze state, taking into account
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* any auto-expiry or other state transitions that the implementation uses.
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* @return isFrozen True if the DAO is currently frozen, false otherwise
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*/
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function isFrozen() external view returns (bool isFrozen);
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/**
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* @notice Returns the timestamp of the most recent freeze, even if currently unfrozen
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* @dev CRITICAL SECURITY FUNCTION: This enables the freeze guard security model.
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*
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* Security Invariant: Any transaction that was timelocked BEFORE this timestamp
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* will NEVER be executable, regardless of the current freeze/unfreeze state.
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*
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* This timestamp:
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* - Is set to block.timestamp whenever the DAO is frozen
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* - Is NEVER cleared (remains set even after unfreeze)
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* - Ensures all pre-freeze timelocked transactions are permanently invalidated
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*
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* @return lastFreezeTimestamp Timestamp of the most recent freeze, or 0 if never frozen
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*/
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function lastFreezeTime()
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external
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view
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returns (uint48 lastFreezeTimestamp);
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}
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