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Black List Aspect

This aspect allows you to enable a blacklist for a smart contract. Users can add or remove accounts from the blacklist. If a blacklisted address attempts to access the smart contract, the aspect will block the contract’s execution.

Files

.
├── README.md
├── asconfig.json
├── aspect                 <-- Your aspect code resides here
│   └── index.ts
├── contracts              <-- Place your smart contracts here
├── scripts                <-- Utility scripts, including deploying, binding, etc.
│   ├── aspect-deploy.cjs
│   ├── bind.cjs
│   ├── contract-call.cjs
│   └── contract-deploy.cjs
...

How to Run

Create an address

$ npm run account:create
address:  0x6B70B03B608a19Bf1817848A4C8FFF844f0Be0fB

This script creates a private key file named privateKey.txt in the project directory. You can also input your own private key if you prefer. Note your address, then request test tokens from the Artela Discord faucet.

Compile and Deploy Contracts

$ npm run contract:build

$ npm run contract:deploy -- --bytecode ./build/contract/Counter.bin --abi ./build/contract/Counter.abi

> contract:deploy
> node scripts/contract-deploy.cjs --bytecode ./build/contract/Counter.bin --abi ./build/contract/Counter.abi

from address:  0xdc863fd839e6a55E804Ae45ffd7A7606aDD7F1e2
(node:82367) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
deploy contract tx hash: 0xdc4274875ba014f9009185ec9eb20e4565edbcf3a73be270869d7ae16c4e9cb4
{
  blockHash: '0x23df4a37f4565a85a72d591bc7c4356e0880f3c5e2880a88ce3e6276682b3b64',
  blockNumber: 10587877,
  contractAddress: '0x01D3b3aa301dE819184Dd5b4ec07a20FaBf26d02',
  cumulativeGasUsed: 3500000,
  from: '0xdc863fd839e6a55e804ae45ffd7a7606add7f1e2',
  gasUsed: 7000001,
  logs: [],
  logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
  status: true,
  to: null,
  transactionHash: '0xdc4274875ba014f9009185ec9eb20e4565edbcf3a73be270869d7ae16c4e9cb4',
  transactionIndex: 0,
  type: '0x0'
}
contract address:  0x01D3b3aa301dE819184Dd5b4ec07a20FaBf26d02
--contractAccount 0xdc863fd839e6a55E804Ae45ffd7A7606aDD7F1e2 --contractAddress 0x01D3b3aa301dE819184Dd5b4ec07a20FaBf26d02

Remember the address of the deployed contract, as it will be needed for binding later.

Compile Aspect

$ npm run aspect:build

After building, run the deployment script.

$ npm run aspect:deploy -- --properties '[{"key":"owner","value":"0xdc863fd839e6a55e804ae45ffd7a7606add7f1e2"}]' --joinPoints PreContractCall 

from address:  0xdc863fd839e6a55E804Ae45ffd7A7606aDD7F1e2
sending signed transaction...
{
  blockHash: '0x2fce10b2a16c6c06b7a17302c328c24be1d0cbe0d570f9407a4db8af3e13f812',
  blockNumber: 10587869,
  contractAddress: null,
  cumulativeGasUsed: 21000,
  from: '0xdc863fd839e6a55e804ae45ffd7a7606add7f1e2',
  gasUsed: 9000001,
  logs: [],
  logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
  status: true,
  to: '0x0000000000000000000000000000000000a27e14',
  transactionHash: '0xcaebf0c142ff67e034728afda3c7bd625088ec09bf48b157c62ddf5328270905',
  transactionIndex: 1,
  type: '0x0',
  aspectAddress: '0x8f80C7a29eC332F878fA13d2396ED6f7189ef875'
}
ret:  {
  blockHash: '0x2fce10b2a16c6c06b7a17302c328c24be1d0cbe0d570f9407a4db8af3e13f812',
  blockNumber: 10587869,
  contractAddress: null,
  cumulativeGasUsed: 21000,
  from: '0xdc863fd839e6a55e804ae45ffd7a7606add7f1e2',
  gasUsed: 9000001,
  logs: [],
  logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
  status: true,
  to: '0x0000000000000000000000000000000000a27e14',
  transactionHash: '0xcaebf0c142ff67e034728afda3c7bd625088ec09bf48b157c62ddf5328270905',
  transactionIndex: 1,
  type: '0x0',
  aspectAddress: '0x8f80C7a29eC332F878fA13d2396ED6f7189ef875'
}
== deploy aspectID == 0x8f80C7a29eC332F878fA13d2396ED6f7189ef875

The parameters are as follows:

  • owner: Your account address to ensure add/remove blacklist operations succeed.
  • joinPoints: Must be specified for binding with the aspect.

Remember the final aspectID for future binding.

Binding

Run the bind.cjs script and input the previously deployed contract address (or your own contract address) and the aspect id.

$ npm run contract:bind -- --contract 0x01D3b3aa301dE819184Dd5b4ec07a20FaBf26d02 --aspectId 0x8f80C7a29eC332F878fA13d2396ED6f7189ef875 --abi ./build/contract/Counter.abi

sending signed transaction...
{
  blockHash: '0x1c210bb3c50d2574a49626a514a607b34ed0c13660e330d35109e246fa60bada',
  blockNumber: 10587894,
  contractAddress: null,
  cumulativeGasUsed: 0,
  from: '0xdc863fd839e6a55e804ae45ffd7a7606add7f1e2',
  gasUsed: 9000001,
  logs: [],
  logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
  status: true,
  to: '0x0000000000000000000000000000000000a27e14',
  transactionHash: '0x1622ea134aca41a66f9089965416e5b102eb2f78dea85d4543f75833b858917a',
  transactionIndex: 0,
  type: '0x0'
}
== aspect bind success ==

Then, we can execute the script to query the Aspect bound to the contract and check if the binding was successful.

$ node scripts/get-bound-aspect.cjs --contract <CONTRAT_ADDRESS>
bound aspects : 0x8f80C7a29eC332F878fA13d2396ED6f7189ef875,1,1

If the output displays the aforementioned aspectID, it indicates that the binding was successful.

Add / Remove Black List

The first digit after 0x in --callData decides whether it's an add or remove. 0 stands for remove, 1 stands for add.

npm run operation:send -- --aspectId 0x8f80C7a29eC332F878fA13d2396ED6f7189ef875 --callData 0x0dc863fd839e6a55e804ae45ffd7a7606add7f1e2

> operation:send
> node scripts/operation.cjs --isCall false --aspectId 0x8f80C7a29eC332F878fA13d2396ED6f7189ef875 --callData 0x0dc863fd839e6a55e804ae45ffd7a7606add7f1e2

(node:99615) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
{
  blockHash: '0x0761a3d549a448dc4fdecce4c86887c32779d5c2412d830f8f7e170aec4d1468',
  blockNumber: 10588795,
  contractAddress: null,
  cumulativeGasUsed: 326612,
  from: '0xdc863fd839e6a55e804ae45ffd7a7606add7f1e2',
  gasUsed: 900000,
  logs: [],
  logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
  status: true,
  to: '0x0000000000000000000000000000000000a27e14',
  transactionHash: '0x0e24d901e51c58186446399da1e2dca68e16e802c350ac3ab917d28dc54fc299',
  transactionIndex: 3,
  type: '0x0'
}

Call Contract

Use this command to call the contract. If the address is not blacklisted, the transaction will go through; otherwise, it will fail.

npm run contract:send -- --contract 0x01D3b3aa301dE819184Dd5b4ec07a20FaBf26d02 --abi ./build/contract/Counter.abi --method increase

> contract:send
> node scripts/contract-send.cjs --contract 0x01D3b3aa301dE819184Dd5b4ec07a20FaBf26d02 --abi ./build/contract/Counter.abi --method increase

(node:169) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
from address:  0xdc863fd839e6a55E804Ae45ffd7A7606aDD7F1e2
call contract tx hash: 0xd22f1ecd48e06f6b64de32241a7e3f71ee2f6c2b12b2d58f985828cc4fe0ee7f
{
  blockHash: '0x348d63de6c3c64214b31c57d2c64bb7facd3b606f381a6c28dca44d259918ae7',
  blockNumber: 10588809,
  contractAddress: null,
  cumulativeGasUsed: 2000000,
  from: '0xdc863fd839e6a55e804ae45ffd7a7606add7f1e2',
  gasUsed: 4000001,
  logs: [],
  logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
  status: true,
  to: '0x01d3b3aa301de819184dd5b4ec07a20fabf26d02',
  transactionHash: '0xd22f1ecd48e06f6b64de32241a7e3f71ee2f6c2b12b2d58f985828cc4fe0ee7f',
  transactionIndex: 0,
  type: '0x0'
}