tests: Add RPCOverloadWrapper which overloads some disabled RPCs

RPCOverloadWrapper overloads some deprecated or disabled RPCs with
an implementation using other RPCs to avoid having a ton of code churn
around replacing those RPCs.

test/functional/feature_backwards_compatibility.py

@@ -94,7 +94,7 @@ def run_test(self):
 
         # w1: regular wallet, created on master: update this test when default
         #     wallets can no longer be opened by older versions.
-        node_master.createwallet(wallet_name="w1")
+        node_master.rpc.createwallet(wallet_name="w1")
         wallet = node_master.get_wallet_rpc("w1")
         info = wallet.getwalletinfo()
         assert info['private_keys_enabled']
@@ -120,17 +120,17 @@ def run_test(self):
         self.nodes[1].abandontransaction(tx3_id)
 
         # w1_v19: regular wallet, created with v0.19
-        node_v19.createwallet(wallet_name="w1_v19")
+        node_v19.rpc.createwallet(wallet_name="w1_v19")
         wallet = node_v19.get_wallet_rpc("w1_v19")
         info = wallet.getwalletinfo()
         assert info['private_keys_enabled']
         assert info['keypoolsize'] > 0
         # Use addmultisigaddress (see #18075)
-        address_18075 = wallet.addmultisigaddress(1, ["0296b538e853519c726a2c91e61ec11600ae1390813a627c66fb8be7947be63c52", "037211a824f55b505228e4c3d5194c1fcfaa15a456abdf37f9b9d97a4040afc073"], "", "legacy")["address"]
+        address_18075 = wallet.rpc.addmultisigaddress(1, ["0296b538e853519c726a2c91e61ec11600ae1390813a627c66fb8be7947be63c52", "037211a824f55b505228e4c3d5194c1fcfaa15a456abdf37f9b9d97a4040afc073"], "", "legacy")["address"]
         assert wallet.getaddressinfo(address_18075)["solvable"]
 
         # w1_v18: regular wallet, created with v0.18
-        node_v18.createwallet(wallet_name="w1_v18")
+        node_v18.rpc.createwallet(wallet_name="w1_v18")
         wallet = node_v18.get_wallet_rpc("w1_v18")
         info = wallet.getwalletinfo()
         assert info['private_keys_enabled']
@@ -139,43 +139,43 @@ def run_test(self):
         # w2: wallet with private keys disabled, created on master: update this
         #     test when default wallets private keys disabled can no longer be
         #     opened by older versions.
-        node_master.createwallet(wallet_name="w2", disable_private_keys=True)
+        node_master.rpc.createwallet(wallet_name="w2", disable_private_keys=True)
         wallet = node_master.get_wallet_rpc("w2")
         info = wallet.getwalletinfo()
         assert info['private_keys_enabled'] == False
         assert info['keypoolsize'] == 0
 
         # w2_v19: wallet with private keys disabled, created with v0.19
-        node_v19.createwallet(wallet_name="w2_v19", disable_private_keys=True)
+        node_v19.rpc.createwallet(wallet_name="w2_v19", disable_private_keys=True)
         wallet = node_v19.get_wallet_rpc("w2_v19")
         info = wallet.getwalletinfo()
         assert info['private_keys_enabled'] == False
         assert info['keypoolsize'] == 0
 
         # w2_v18: wallet with private keys disabled, created with v0.18
-        node_v18.createwallet(wallet_name="w2_v18", disable_private_keys=True)
+        node_v18.rpc.createwallet(wallet_name="w2_v18", disable_private_keys=True)
         wallet = node_v18.get_wallet_rpc("w2_v18")
         info = wallet.getwalletinfo()
         assert info['private_keys_enabled'] == False
         assert info['keypoolsize'] == 0
 
         # w3: blank wallet, created on master: update this
         #     test when default blank wallets can no longer be opened by older versions.
-        node_master.createwallet(wallet_name="w3", blank=True)
+        node_master.rpc.createwallet(wallet_name="w3", blank=True)
         wallet = node_master.get_wallet_rpc("w3")
         info = wallet.getwalletinfo()
         assert info['private_keys_enabled']
         assert info['keypoolsize'] == 0
 
         # w3_v19: blank wallet, created with v0.19
-        node_v19.createwallet(wallet_name="w3_v19", blank=True)
+        node_v19.rpc.createwallet(wallet_name="w3_v19", blank=True)
         wallet = node_v19.get_wallet_rpc("w3_v19")
         info = wallet.getwalletinfo()
         assert info['private_keys_enabled']
         assert info['keypoolsize'] == 0
 
         # w3_v18: blank wallet, created with v0.18
-        node_v18.createwallet(wallet_name="w3_v18", blank=True)
+        node_v18.rpc.createwallet(wallet_name="w3_v18", blank=True)
         wallet = node_v18.get_wallet_rpc("w3_v18")
         info = wallet.getwalletinfo()
         assert info['private_keys_enabled']
@@ -318,7 +318,7 @@ def run_test(self):
 
         self.log.info("Test wallet upgrade path...")
         # u1: regular wallet, created with v0.17
-        node_v17.createwallet(wallet_name="u1_v17")
+        node_v17.rpc.createwallet(wallet_name="u1_v17")
         wallet = node_v17.get_wallet_rpc("u1_v17")
         address = wallet.getnewaddress("bech32")
         info = wallet.getaddressinfo(address)

test/functional/test_framework/test_node.py

@@ -22,6 +22,7 @@
 import sys
 
 from .authproxy import JSONRPCException
+from .descriptors import descsum_create
 from .util import (
     MAX_NODES,
     append_config,
@@ -170,10 +171,10 @@ def __del__(self):
     def __getattr__(self, name):
         """Dispatches any unrecognised messages to the RPC connection or a CLI instance."""
         if self.use_cli:
-            return getattr(self.cli, name)
+            return getattr(RPCOverloadWrapper(self.cli, True), name)
         else:
             assert self.rpc_connected and self.rpc is not None, self._node_msg("Error: no RPC connection")
-            return getattr(self.rpc, name)
+            return getattr(RPCOverloadWrapper(self.rpc), name)
 
     def start(self, extra_args=None, *, cwd=None, stdout=None, stderr=None, **kwargs):
         """Start the node."""
@@ -265,11 +266,11 @@ def generate(self, nblocks, maxtries=1000000):
 
     def get_wallet_rpc(self, wallet_name):
         if self.use_cli:
-            return self.cli("-rpcwallet={}".format(wallet_name))
+            return RPCOverloadWrapper(self.cli("-rpcwallet={}".format(wallet_name)), True)
         else:
             assert self.rpc_connected and self.rpc, self._node_msg("RPC not connected")
             wallet_path = "wallet/{}".format(urllib.parse.quote(wallet_name))
-            return self.rpc / wallet_path
+            return RPCOverloadWrapper(self.rpc / wallet_path)
 
     def stop_node(self, expected_stderr='', wait=0):
         """Stop the node."""
@@ -595,3 +596,103 @@ def send_cli(self, command=None, *args, **kwargs):
             return json.loads(cli_stdout, parse_float=decimal.Decimal)
         except json.JSONDecodeError:
             return cli_stdout.rstrip("\n")
+
+class RPCOverloadWrapper():
+    def __init__(self, rpc, cli=False):
+        self.rpc = rpc
+        self.is_cli = cli
+
+    def __getattr__(self, name):
+        return getattr(self.rpc, name)
+
+    def importprivkey(self, privkey, label=None, rescan=None):
+        wallet_info = self.getwalletinfo()
+        if self.is_cli:
+            if label is None:
+                label = 'null'
+            if rescan is None:
+                rescan = 'null'
+        if 'descriptors' not in wallet_info or ('descriptors' in wallet_info and not wallet_info['descriptors']):
+            return self.__getattr__('importprivkey')(privkey, label, rescan)
+        desc = descsum_create('combo(' + privkey + ')')
+        req = [{
+            'desc': desc,
+            'timestamp': 0 if rescan else 'now',
+            'label': label if label else ''
+        }]
+        import_res = self.importdescriptors(req)
+        if not import_res[0]['success']:
+            raise JSONRPCException(import_res[0]['error'])
+
+    def addmultisigaddress(self, nrequired, keys, label=None, address_type=None):
+        wallet_info = self.getwalletinfo()
+        if self.is_cli:
+            if label is None:
+                label = 'null'
+            if address_type is None:
+                address_type = 'null'
+        if 'descriptors' not in wallet_info or ('descriptors' in wallet_info and not wallet_info['descriptors']):
+            return self.__getattr__('addmultisigaddress')(nrequired, keys, label, address_type)
+        cms = self.createmultisig(nrequired, keys, address_type)
+        req = [{
+            'desc': cms['descriptor'],
+            'timestamp': 0,
+            'label': label if label else ''
+        }]
+        import_res = self.importdescriptors(req)
+        if not import_res[0]['success']:
+            raise JSONRPCException(import_res[0]['error'])
+        return cms
+
+    def importpubkey(self, pubkey, label=None, rescan=None):
+        wallet_info = self.getwalletinfo()
+        if self.is_cli:
+            if label is None:
+                label = 'null'
+            if rescan is None:
+                rescan = 'null'
+        if 'descriptors' not in wallet_info or ('descriptors' in wallet_info and not wallet_info['descriptors']):
+            return self.__getattr__('importpubkey')(pubkey, label, rescan)
+        desc = descsum_create('combo(' + pubkey + ')')
+        req = [{
+            'desc': desc,
+            'timestamp': 0 if rescan else 'now',
+            'label': label if label else ''
+        }]
+        import_res = self.importdescriptors(req)
+        if not import_res[0]['success']:
+            raise JSONRPCException(import_res[0]['error'])
+
+    def importaddress(self, address, label=None, rescan=None, p2sh=None):
+        wallet_info = self.getwalletinfo()
+        if self.is_cli:
+            if label is None:
+                label = 'null'
+            if rescan is None:
+                rescan = 'null'
+            if p2sh is None:
+                p2sh = 'null'
+        if 'descriptors' not in wallet_info or ('descriptors' in wallet_info and not wallet_info['descriptors']):
+            return self.__getattr__('importaddress')(address, label, rescan, p2sh)
+        is_hex = False
+        try:
+            int(address ,16)
+            is_hex = True
+            desc = descsum_create('raw(' + address + ')')
+        except:
+            desc = descsum_create('addr(' + address + ')')
+        reqs = [{
+            'desc': desc,
+            'timestamp': 0 if rescan else 'now',
+            'label': label if label else ''
+        }]
+        if is_hex and p2sh:
+            reqs.append({
+                'desc': descsum_create('p2sh(raw(' + address + '))'),
+                'timestamp': 0 if rescan else 'now',
+                'label': label if label else ''
+            })
+        import_res = self.importdescriptors(reqs)
+        for res in import_res:
+            if not res['success']:
+                raise JSONRPCException(res['error'])

test/functional/wallet_descriptor.py

@@ -81,15 +81,15 @@ def run_test(self):
 
         # Make sure things are disabled
         self.log.info("Test disabled RPCs")
-        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.importprivkey, "cVpF924EspNh8KjYsfhgY96mmxvT6DgdWiTYMtMjuM74hJaU5psW")
-        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.importpubkey, send_wrpc.getaddressinfo(send_wrpc.getnewaddress()))
-        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.importaddress, recv_wrpc.getnewaddress())
-        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.importmulti, [])
-        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.addmultisigaddress, 1, [recv_wrpc.getnewaddress()])
-        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.dumpprivkey, recv_wrpc.getnewaddress())
-        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.dumpwallet, 'wallet.dump')
-        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.importwallet, 'wallet.dump')
-        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.sethdseed)
+        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.rpc.importprivkey, "cVpF924EspNh8KjYsfhgY96mmxvT6DgdWiTYMtMjuM74hJaU5psW")
+        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.rpc.importpubkey, send_wrpc.getaddressinfo(send_wrpc.getnewaddress()))
+        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.rpc.importaddress, recv_wrpc.getnewaddress())
+        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.rpc.importmulti, [])
+        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.rpc.addmultisigaddress, 1, [recv_wrpc.getnewaddress()])
+        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.rpc.dumpprivkey, recv_wrpc.getnewaddress())
+        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.rpc.dumpwallet, 'wallet.dump')
+        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.rpc.importwallet, 'wallet.dump')
+        assert_raises_rpc_error(-4, "This type of wallet does not support this command", recv_wrpc.rpc.sethdseed)
 
         self.log.info("Test encryption")
         # Get the master fingerprint before encrypt