From e787493e02238735b3bb4ff1690f7a02004cbd0c Mon Sep 17 00:00:00 2001
From: Daniel Wang <99078276+dantaik@users.noreply.github.com>
Date: Fri, 5 Apr 2024 14:42:58 +0800
Subject: [PATCH] fix(protocol): check blob capability in LibProposing using
 LibNetwork.isDencunSupported (#16657)

---
 packages/protocol/contracts/L1/libs/LibProposing.sol | 3 ++-
 packages/protocol/contracts/bridge/Bridge.sol        | 2 +-
 packages/protocol/contracts/libs/LibNetwork.sol      | 9 +++++----
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/packages/protocol/contracts/L1/libs/LibProposing.sol b/packages/protocol/contracts/L1/libs/LibProposing.sol
index bde191128ce..a8879bbc3f7 100644
--- a/packages/protocol/contracts/L1/libs/LibProposing.sol
+++ b/packages/protocol/contracts/L1/libs/LibProposing.sol
@@ -5,6 +5,7 @@ import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
 import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import "../../common/IAddressResolver.sol";
 import "../../libs/LibAddress.sol";
+import "../../libs/LibNetwork.sol";
 import "../hooks/IHook.sol";
 import "../tiers/ITierProvider.sol";
 
@@ -122,7 +123,7 @@ library LibProposing {
 
         // Update certain meta fields
         if (meta_.blobUsed) {
-            if (block.chainid != 1) revert L1_BLOB_NOT_AVAILABLE();
+            if (!LibNetwork.isDencunSupported(block.chainid)) revert L1_BLOB_NOT_AVAILABLE();
 
             // Always use the first blob in this transaction. If the
             // proposeBlock functions are called more than once in the same
diff --git a/packages/protocol/contracts/bridge/Bridge.sol b/packages/protocol/contracts/bridge/Bridge.sol
index 25a18d2a712..1b28f3a4c74 100644
--- a/packages/protocol/contracts/bridge/Bridge.sol
+++ b/packages/protocol/contracts/bridge/Bridge.sol
@@ -486,7 +486,7 @@ contract Bridge is EssentialContract, IBridge {
             // For Taiko mainnet and public testnets
             // 384 seconds = 6.4 minutes = one ethereum epoch
             return (1 hours, 384 seconds);
-        } else if (LibNetwork.isTaikoDevnet(block.chainid)) {
+        } else if (LibNetwork.isTaikoDevnetL1(block.chainid)) {
             return (5 minutes, 384 seconds);
         } else {
             // This is a Taiko L2 chain where no deleys are applied.
diff --git a/packages/protocol/contracts/libs/LibNetwork.sol b/packages/protocol/contracts/libs/LibNetwork.sol
index d4d55cafa25..24d7076252f 100644
--- a/packages/protocol/contracts/libs/LibNetwork.sol
+++ b/packages/protocol/contracts/libs/LibNetwork.sol
@@ -28,10 +28,11 @@ library LibNetwork {
         return _chainId == LibNetwork.MAINNET || isEthereumTestnet(_chainId);
     }
 
-    /// @dev Checks if the chain ID represents an internal Taiko devnet.
+    /// @dev Checks if the chain ID represents an internal Taiko devnet's base layer.
     /// @param _chainId The chain ID.
-    /// @return true if the chain ID represents an internal Taiko devnet, false otherwise.
-    function isTaikoDevnet(uint256 _chainId) internal pure returns (bool) {
+    /// @return true if the chain ID represents an internal Taiko devnet's base layer, false
+    /// otherwise.
+    function isTaikoDevnetL1(uint256 _chainId) internal pure returns (bool) {
         return _chainId >= 32_300 && _chainId <= 32_400;
     }
 
@@ -41,6 +42,6 @@ library LibNetwork {
     /// @return true if the chain supports Dencun hardfork, false otherwise.
     function isDencunSupported(uint256 _chainId) internal pure returns (bool) {
         return _chainId == LibNetwork.MAINNET || _chainId == LibNetwork.HOLESKY
-            || _chainId == LibNetwork.SEPOLIA;
+            || _chainId == LibNetwork.SEPOLIA || isTaikoDevnetL1(_chainId);
     }
 }