feat(contracts): hard code address manager owner as gas burn admin

ops/docker-compose-nobuild.yml

@@ -34,8 +34,6 @@ services:
         # these keys are hardhat's first 2 accounts, DO NOT use in production
         DEPLOYER_PRIVATE_KEY: "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80"
         SEQUENCER_PRIVATE_KEY: "0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d"
-        # this address is hardhat's third accounts, DO NOT use in production
-        BURN_ADMIN_ADDRESS: "0xD1D84F0e28D6fedF03c73151f98dF95139700aa7"
         # skip compilation when run in docker-compose, since the contracts
         # were already compiled in the builder step
         NO_COMPILE: 1

ops/docker-compose.yml

@@ -34,8 +34,6 @@ services:
         # these keys are hardhat's first 2 accounts, DO NOT use in production
         DEPLOYER_PRIVATE_KEY: "0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80"
         SEQUENCER_PRIVATE_KEY: "0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d"
-        # this address is hardhat's third accounts, DO NOT use in production.
-        BURN_ADMIN_ADDRESS: "0xD1D84F0e28D6fedF03c73151f98dF95139700aa7"
         GAS_PRICE_ORACLE_OWNER: "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266"
         # setting the whitelist owner to address(0) disables the whitelist
         WHITELIST_OWNER: "0x0000000000000000000000000000000000000000"

packages/contracts/bin/deploy.ts

-import { Wallet, utils } from 'ethers'
+import { Wallet } from 'ethers'
 import path from 'path'
 import dirtree from 'directory-tree'
 import fs from 'fs'
@@ -17,7 +17,6 @@ import hre from 'hardhat'
 
 const sequencer = new Wallet(process.env.SEQUENCER_PRIVATE_KEY)
 const deployer = new Wallet(process.env.DEPLOYER_PRIVATE_KEY)
-const burnAdminAddress = utils.getAddress(process.env.BURN_ADMIN_ADDRESS)
 
 const parseEnv = () => {
   const ensure = (env, type) => {
@@ -55,7 +54,6 @@ const main = async () => {
     sccSequencerPublishWindow: config.sccFraudProofWindow,
     ovmSequencerAddress: sequencer.address,
     ovmProposerAddress: sequencer.address,
-    ovmBurnAdmin: burnAdminAddress,
     ovmAddressManagerOwner: deployer.address,
     noCompile: process.env.NO_COMPILE ? true : false,
   })

packages/contracts/contracts/L1/rollup/CanonicalTransactionChain.sol

@@ -87,12 +87,12 @@ contract CanonicalTransactionChain is ICanonicalTransactionChain, Lib_AddressRes
      **********************/
 
     /**
-     * Modifier to enforce that only the OVM_BurnAdmin contract may
+     * Modifier to enforce that, if configured, only the OVM_Sequencer contract may
      * successfully call a method.
      */
     modifier onlyBurnAdmin() {
         require(
-            msg.sender == resolve("OVM_BurnAdmin"),
+            msg.sender == libAddressManager.owner(),
             "Only callable by the Burn Admin."
         );
         _;

packages/contracts/deploy/000-Lib_AddressManager.deploy.ts

@@ -39,12 +39,6 @@ const deployFn: DeployFunction = async (hre) => {
     name: 'OVM_Proposer',
     address: (hre as any).deployConfig.ovmProposerAddress,
   })
-
-  await registerAddress({
-    hre,
-    name: 'OVM_BurnAdmin',
-    address: (hre as any).deployConfig.ovmBurnAdmin,
-  })
 }
 
 deployFn.tags = ['Lib_AddressManager']

packages/contracts/tasks/deploy.ts

@@ -65,12 +65,6 @@ task('deploy')
     undefined,
     types.string
   )
-  .addOptionalParam(
-    'ovmBurnAdmin',
-    'Address that can update gas burn parameters in the CTC. Must be provided or this deployment will fail.',
-    undefined,
-    types.string
-  )
   .setAction(async (args, hre: any, runSuper) => {
     // Necessary because hardhat doesn't let us attach non-optional parameters to existing tasks.
     const validateAddressArg = (argName: string) => {

packages/contracts/test/contracts/L1/rollup/CanonicalTransactionChain.spec.ts

@@ -63,11 +63,11 @@ const appendSequencerBatch = async (
 }
 
 describe('CanonicalTransactionChain', () => {
-  let signer: Signer
+  let addressManagerOwner: Signer
   let sequencer: Signer
-  let burnAdmin: Signer
+  let otherSigner: Signer
   before(async () => {
-    ;[signer, sequencer, burnAdmin] = await ethers.getSigners()
+    ;[addressManagerOwner, sequencer, otherSigner] = await ethers.getSigners()
   })
 
   let AddressManager: Contract
@@ -79,11 +79,6 @@ describe('CanonicalTransactionChain', () => {
       await sequencer.getAddress()
     )
 
-    await AddressManager.setAddress(
-      'OVM_BurnAdmin',
-      await burnAdmin.getAddress()
-    )
-
     Mock__StateCommitmentChain = await smockit(
       await ethers.getContractFactory('StateCommitmentChain')
     )
@@ -143,17 +138,17 @@ describe('CanonicalTransactionChain', () => {
 
   describe('Gas param setters', () => {
     describe('setGasDivisor', async () => {
-      it('should revert when not called by the Burn Admin', async () => {
+      it('should revert when not called by the sequencer', async () => {
         await expect(
-          CanonicalTransactionChain.connect(signer).setGasDivisor(32)
+          CanonicalTransactionChain.connect(otherSigner).setGasDivisor(32)
         ).to.be.revertedWith('Only callable by the Burn Admin.')
       })
 
       it('should update the l2GasDiscountDivisor and enqueueL2GasPrepaid correctly', async () => {
         const newGasDivisor = 19
-        await CanonicalTransactionChain.connect(burnAdmin).setGasDivisor(
-          newGasDivisor
-        )
+        await CanonicalTransactionChain.connect(
+          addressManagerOwner
+        ).setGasDivisor(newGasDivisor)
 
         const enqueueGasCost = await CanonicalTransactionChain.enqueueGasCost()
         const enqueueL2GasPrepaid =
@@ -163,23 +158,27 @@ describe('CanonicalTransactionChain', () => {
 
       it('should emit an L2GasParamsUpdated event', async () => {
         await expect(
-          CanonicalTransactionChain.connect(burnAdmin).setGasDivisor(88)
+          CanonicalTransactionChain.connect(addressManagerOwner).setGasDivisor(
+            88
+          )
         ).to.emit(CanonicalTransactionChain, 'L2GasParamsUpdated')
       })
     })
 
     describe('setEnqueueGasCost', async () => {
-      it('should revert when not called by the Burn Admin', async () => {
+      it('should revert when not called by the sequencer', async () => {
         await expect(
-          CanonicalTransactionChain.connect(signer).setEnqueueGasCost(60000)
+          CanonicalTransactionChain.connect(otherSigner).setEnqueueGasCost(
+            60000
+          )
         ).to.be.revertedWith('Only callable by the Burn Admin.')
       })
 
       it('should update the enqueueGasCost and enqueueL2GasPrepaid correctly', async () => {
         const newEnqueueGasCost = 31113
-        await CanonicalTransactionChain.connect(burnAdmin).setEnqueueGasCost(
-          newEnqueueGasCost
-        )
+        await CanonicalTransactionChain.connect(
+          addressManagerOwner
+        ).setEnqueueGasCost(newEnqueueGasCost)
 
         const l2GasDiscountDivisor =
           await CanonicalTransactionChain.l2GasDiscountDivisor()
@@ -192,7 +191,9 @@ describe('CanonicalTransactionChain', () => {
 
       it('should emit an L2GasParamsUpdated event', async () => {
         await expect(
-          CanonicalTransactionChain.connect(burnAdmin).setEnqueueGasCost(31514)
+          CanonicalTransactionChain.connect(
+            addressManagerOwner
+          ).setEnqueueGasCost(31514)
         ).to.emit(CanonicalTransactionChain, 'L2GasParamsUpdated')
       })
     })
@@ -342,7 +343,7 @@ describe('CanonicalTransactionChain', () => {
             await setEthTime(ethers.provider, timestamp)
 
             const transactionHash = getTransactionHash(
-              await signer.getAddress(),
+              await addressManagerOwner.getAddress(),
               target,
               gasLimit,
               data
@@ -386,7 +387,7 @@ describe('CanonicalTransactionChain', () => {
                 await setEthTime(ethers.provider, timestamp)
 
                 transactionHash = getTransactionHash(
-                  await signer.getAddress(),
+                  await addressManagerOwner.getAddress(),
                   target,
                   gasLimit,
                   data
@@ -429,7 +430,7 @@ describe('CanonicalTransactionChain', () => {
                 await setEthTime(ethers.provider, timestamp)
 
                 transactionHash = getTransactionHash(
-                  await signer.getAddress(),
+                  await addressManagerOwner.getAddress(),
                   target,
                   gasLimit,
                   data
@@ -507,7 +508,9 @@ describe('CanonicalTransactionChain', () => {
 
     it('should revert if not called by the sequencer', async () => {
       await expect(
-        appendSequencerBatch(CanonicalTransactionChain.connect(signer), {
+        appendSequencerBatch(
+          CanonicalTransactionChain.connect(addressManagerOwner),
+          {
             transactions: ['0x1234'],
             contexts: [
               {
@@ -519,7 +522,8 @@ describe('CanonicalTransactionChain', () => {
             ],
             shouldStartAtElement: 0,
             totalElementsToAppend: 1,
-        })
+          }
+        )
       ).to.be.revertedWith('Function can only be called by the Sequencer.')
     })