rpc: Fix invalid bech32 handling

Github-Pull: #27727
Rebased-From: eeee55f9288740747b6e8d806ce8177fd92635cf

1 files changed, 203 insertions, 0 deletions

diff --git a/test/functional/rpc_validateaddress.py b/test/functional/rpc_validateaddress.py
new file mode 100755
index 0000000000..2ce6b35d04
--- /dev/null
+++ b/test/functional/rpc_validateaddress.py
@@ -0,0 +1,203 @@
+#!/usr/bin/env python3
+# Copyright (c) 2023 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+"""Test validateaddress for main chain"""
+
+from test_framework.test_framework import BitcoinTestFramework
+
+from test_framework.util import assert_equal
+
+INVALID_DATA = [
+    # BIP 173
+    (
+        "tc1qw508d6qejxtdg4y5r3zarvary0c5xw7kg3g4ty",
+        "Invalid or unsupported Segwit (Bech32) or Base58 encoding.",  # Invalid hrp
+        [],
+    ),
+    ("bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t5", "Invalid Bech32 checksum", [41]),
+    (
+        "BC13W508D6QEJXTDG4Y5R3ZARVARY0C5XW7KN40WF2",
+        "Version 1+ witness address must use Bech32m checksum",
+        [],
+    ),
+    (
+        "bc1rw5uspcuh",
+        "Version 1+ witness address must use Bech32m checksum",  # Invalid program length
+        [],
+    ),
+    (
+        "bc10w508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7kw5rljs90",
+        "Version 1+ witness address must use Bech32m checksum",  # Invalid program length
+        [],
+    ),
+    (
+        "BC1QR508D6QEJXTDG4Y5R3ZARVARYV98GJ9P",
+        "Invalid Bech32 v0 address program size (16 byte), per BIP141",
+        [],
+    ),
+    (
+        "tb1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3q0sL5k7",
+        "Invalid or unsupported Segwit (Bech32) or Base58 encoding.",  # tb1, Mixed case
+        [],
+    ),
+    (
+        "BC1QW508D6QEJXTDG4Y5R3ZARVARY0C5XW7KV8F3t4",
+        "Invalid character or mixed case",  # bc1, Mixed case, not in BIP 173 test vectors
+        [40],
+    ),
+    (
+        "bc1zw508d6qejxtdg4y5r3zarvaryvqyzf3du",
+        "Version 1+ witness address must use Bech32m checksum",  # Wrong padding
+        [],
+    ),
+    (
+        "tb1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3pjxtptv",
+        "Invalid or unsupported Segwit (Bech32) or Base58 encoding.",  # tb1, Non-zero padding in 8-to-5 conversion
+        [],
+    ),
+    ("bc1gmk9yu", "Empty Bech32 data section", []),
+    # BIP 350
+    (
+        "tc1p0xlxvlhemja6c4dqv22uapctqupfhlxm9h8z3k2e72q4k9hcz7vq5zuyut",
+        "Invalid or unsupported Segwit (Bech32) or Base58 encoding.",  # Invalid human-readable part
+        [],
+    ),
+    (
+        "bc1p0xlxvlhemja6c4dqv22uapctqupfhlxm9h8z3k2e72q4k9hcz7vqh2y7hd",
+        "Version 1+ witness address must use Bech32m checksum",  # Invalid checksum (Bech32 instead of Bech32m)
+        [],
+    ),
+    (
+        "tb1z0xlxvlhemja6c4dqv22uapctqupfhlxm9h8z3k2e72q4k9hcz7vqglt7rf",
+        "Invalid or unsupported Segwit (Bech32) or Base58 encoding.",  # tb1, Invalid checksum (Bech32 instead of Bech32m)
+        [],
+    ),
+    (
+        "BC1S0XLXVLHEMJA6C4DQV22UAPCTQUPFHLXM9H8Z3K2E72Q4K9HCZ7VQ54WELL",
+        "Version 1+ witness address must use Bech32m checksum",  # Invalid checksum (Bech32 instead of Bech32m)
+        [],
+    ),
+    (
+        "bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kemeawh",
+        "Version 0 witness address must use Bech32 checksum",  # Invalid checksum (Bech32m instead of Bech32)
+        [],
+    ),
+    (
+        "tb1q0xlxvlhemja6c4dqv22uapctqupfhlxm9h8z3k2e72q4k9hcz7vq24jc47",
+        "Invalid or unsupported Segwit (Bech32) or Base58 encoding.",  # tb1, Invalid checksum (Bech32m instead of Bech32)
+        [],
+    ),
+    (
+        "bc1p38j9r5y49hruaue7wxjce0updqjuyyx0kh56v8s25huc6995vvpql3jow4",
+        "Invalid Base 32 character",  # Invalid character in checksum
+        [59],
+    ),
+    (
+        "BC130XLXVLHEMJA6C4DQV22UAPCTQUPFHLXM9H8Z3K2E72Q4K9HCZ7VQ7ZWS8R",
+        "Invalid Bech32 address witness version",
+        [],
+    ),
+    ("bc1pw5dgrnzv", "Invalid Bech32 address program size (1 byte)", []),
+    (
+        "bc1p0xlxvlhemja6c4dqv22uapctqupfhlxm9h8z3k2e72q4k9hcz7v8n0nx0muaewav253zgeav",
+        "Invalid Bech32 address program size (41 byte)",
+        [],
+    ),
+    (
+        "BC1QR508D6QEJXTDG4Y5R3ZARVARYV98GJ9P",
+        "Invalid Bech32 v0 address program size (16 byte), per BIP141",
+        [],
+    ),
+    (
+        "tb1p0xlxvlhemja6c4dqv22uapctqupfhlxm9h8z3k2e72q4k9hcz7vq47Zagq",
+        "Invalid or unsupported Segwit (Bech32) or Base58 encoding.",  # tb1, Mixed case
+        [],
+    ),
+    (
+        "bc1p0xlxvlhemja6c4dqv22uapctqupfhlxm9h8z3k2e72q4k9hcz7v07qwwzcrf",
+        "Invalid padding in Bech32 data section",  # zero padding of more than 4 bits
+        [],
+    ),
+    (
+        "tb1p0xlxvlhemja6c4dqv22uapctqupfhlxm9h8z3k2e72q4k9hcz7vpggkg4j",
+        "Invalid or unsupported Segwit (Bech32) or Base58 encoding.",  # tb1, Non-zero padding in 8-to-5 conversion
+        [],
+    ),
+    ("bc1gmk9yu", "Empty Bech32 data section", []),
+]
+VALID_DATA = [
+    # BIP 350
+    (
+        "BC1QW508D6QEJXTDG4Y5R3ZARVARY0C5XW7KV8F3T4",
+        "0014751e76e8199196d454941c45d1b3a323f1433bd6",
+    ),
+    # (
+    #   "tb1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3q0sl5k7",
+    #   "00201863143c14c5166804bd19203356da136c985678cd4d27a1b8c6329604903262",
+    # ),
+    (
+        "bc1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3qccfmv3",
+        "00201863143c14c5166804bd19203356da136c985678cd4d27a1b8c6329604903262",
+    ),
+    (
+        "bc1pw508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7kt5nd6y",
+        "5128751e76e8199196d454941c45d1b3a323f1433bd6751e76e8199196d454941c45d1b3a323f1433bd6",
+    ),
+    ("BC1SW50QGDZ25J", "6002751e"),
+    ("bc1zw508d6qejxtdg4y5r3zarvaryvaxxpcs", "5210751e76e8199196d454941c45d1b3a323"),
+    # (
+    #   "tb1qqqqqp399et2xygdj5xreqhjjvcmzhxw4aywxecjdzew6hylgvsesrxh6hy",
+    #   "0020000000c4a5cad46221b2a187905e5266362b99d5e91c6ce24d165dab93e86433",
+    # ),
+    (
+        "bc1qqqqqp399et2xygdj5xreqhjjvcmzhxw4aywxecjdzew6hylgvses5wp4dt",
+        "0020000000c4a5cad46221b2a187905e5266362b99d5e91c6ce24d165dab93e86433",
+    ),
+    # (
+    #   "tb1pqqqqp399et2xygdj5xreqhjjvcmzhxw4aywxecjdzew6hylgvsesf3hn0c",
+    #   "5120000000c4a5cad46221b2a187905e5266362b99d5e91c6ce24d165dab93e86433",
+    # ),
+    (
+        "bc1pqqqqp399et2xygdj5xreqhjjvcmzhxw4aywxecjdzew6hylgvses7epu4h",
+        "5120000000c4a5cad46221b2a187905e5266362b99d5e91c6ce24d165dab93e86433",
+    ),
+    (
+        "bc1p0xlxvlhemja6c4dqv22uapctqupfhlxm9h8z3k2e72q4k9hcz7vqzk5jj0",
+        "512079be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798",
+    ),
+]
+
+
+class ValidateAddressMainTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.setup_clean_chain = True
+        self.chain = ""  # main
+        self.num_nodes = 1
+        self.extra_args = [["-prune=899"]] * self.num_nodes
+
+    def check_valid(self, addr, spk):
+        info = self.nodes[0].validateaddress(addr)
+        assert_equal(info["isvalid"], True)
+        assert_equal(info["scriptPubKey"], spk)
+        assert "error" not in info
+        assert "error_locations" not in info
+
+    def check_invalid(self, addr, error_str, error_locations):
+        res = self.nodes[0].validateaddress(addr)
+        assert_equal(res["isvalid"], False)
+        assert_equal(res["error"], error_str)
+        assert_equal(res["error_locations"], error_locations)
+
+    def test_validateaddress(self):
+        for (addr, error, locs) in INVALID_DATA:
+            self.check_invalid(addr, error, locs)
+        for (addr, spk) in VALID_DATA:
+            self.check_valid(addr, spk)
+
+    def run_test(self):
+        self.test_validateaddress()
+
+
+if __name__ == "__main__":
+    ValidateAddressMainTest().main()