feat: global pauser

Author: rhlsthrm

contracts/GlobalPauser.sol

@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.0;
+
+import { IonicComptroller } from "./compound/ComptrollerInterface.sol";
+import { ICErc20 } from "./compound/CTokenInterfaces.sol";
+
+interface IPoolDirectory {
+  struct Pool {
+    string name;
+    address creator;
+    address comptroller;
+    uint256 blockPosted;
+    uint256 timestampPosted;
+  }
+
+  function getActivePools() external view returns (uint256, Pool[] memory);
+}
+
+contract GlobalPauser {
+  IPoolDirectory public poolDirectory;
+
+  constructor(address _poolDirectory) {
+    poolDirectory = IPoolDirectory(_poolDirectory);
+  }
+
+  function pauseAll(bool paused) external {
+    (, IPoolDirectory.Pool[] memory pools) = poolDirectory.getActivePools();
+    for (uint256 i = 0; i < pools.length; i++) {
+      ICErc20[] memory markets = IonicComptroller(pools[i].comptroller).getAllMarkets();
+      for (uint256 j = 0; j < markets.length; j++) {
+        bool isPaused = IonicComptroller(pools[i].comptroller).borrowGuardianPaused(address(markets[j]));
+        if (paused != isPaused) {
+          IonicComptroller(pools[i].comptroller)._setBorrowPaused(markets[j], paused);
+        }
+
+        isPaused = IonicComptroller(pools[i].comptroller).mintGuardianPaused(address(markets[j]));
+        if (paused != isPaused) {
+          IonicComptroller(pools[i].comptroller)._setMintPaused(markets[j], paused);
+        }
+      }
+    }
+  }
+}