add decode_calldata.py

web3toolkit/scripts/decode_calldata.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+# -*- encoding: utf-8 -*-
+# author: steinkirch
+
+from utils.strings import pprint
+from utils.os import load_config
+from utils.web3_wrapper import Web3Wrapper
+
+
+def get_data_for_connection() -> dict:
+    """Prepare a dict of data for connection."""
+
+    data = {}
+    env_keys = ['PROVIDER_URL',
+                'PROVIDER_TYPE', 
+                'CONTRACT_ADDRESS',
+                'ABI',
+                'CALLDATA']
+    env_vars = load_config(env_keys) 
+
+    data['network'] = env_vars['PROVIDER_URL']
+    data['provider_type'] = env_vars['PROVIDER_URL']
+    data['contract_address'] = env_vars['CONTRACT_ADDRESS']
+    data['calldata'] = env_vars['CALLDATA']
+    data['abi'] = env_vars['ABI']  
+    return data
+
+
+def decode_calldata(data) -> dict:
+    """Decode raw calldata, given a contract and its ABI."""
+ 
+    w3 = Web3Wrapper(mode=data['provider_type'],
+                     network=data['network'])
+  
+    w3.get_pair_contract(address=data['contract_address'), abi=data['abi'))
+    return we.pair_contract.decode_function_input(data['calldata'])
+
+
+if __name__ == "__main__":
+
+    data = get_data_for_connection()
+    results = decode_calldata(data)
+    pprint(results)