diff options
Diffstat (limited to 'src/key_io.cpp')
| -rw-r--r-- | src/key_io.cpp | 44 |
1 files changed, 32 insertions, 12 deletions
diff --git a/src/key_io.cpp b/src/key_io.cpp index 615f4c9312..3559f3a03d 100644 --- a/src/key_io.cpp +++ b/src/key_io.cpp @@ -76,12 +76,16 @@ public: std::string operator()(const CNoDestination& no) const { return {}; } }; -CTxDestination DecodeDestination(const std::string& str, const CChainParams& params, std::string& error_str) +CTxDestination DecodeDestination(const std::string& str, const CChainParams& params, std::string& error_str, std::vector<int>* error_locations) { std::vector<unsigned char> data; uint160 hash; error_str = ""; - if (DecodeBase58Check(str, data, 21)) { + + // Note this will be false if it is a valid Bech32 address for a different network + bool is_bech32 = (ToLower(str.substr(0, params.Bech32HRP().size())) == params.Bech32HRP()); + + if (!is_bech32 && DecodeBase58Check(str, data, 21)) { // base58-encoded Bitcoin addresses. // Public-key-hash-addresses have version 0 (or 111 testnet). // The data vector contains RIPEMD160(SHA256(pubkey)), where pubkey is the serialized public key. @@ -98,15 +102,30 @@ CTxDestination DecodeDestination(const std::string& str, const CChainParams& par return ScriptHash(hash); } - // Set potential error message. - // This message may be changed if the address can also be interpreted as a Bech32 address. - error_str = "Invalid prefix for Base58-encoded address"; + // If the prefix of data matches either the script or pubkey prefix, the length must have been wrong + if ((data.size() >= script_prefix.size() && + std::equal(script_prefix.begin(), script_prefix.end(), data.begin())) || + (data.size() >= pubkey_prefix.size() && + std::equal(pubkey_prefix.begin(), pubkey_prefix.end(), data.begin()))) { + error_str = "Invalid length for Base58 address"; + } else { + error_str = "Invalid prefix for Base58-encoded address"; + } + return CNoDestination(); + } else if (!is_bech32) { + // Try Base58 decoding without the checksum, using a much larger max length + if (!DecodeBase58(str, data, 100)) { + error_str = "Not a valid Bech32 or Base58 encoding"; + } else { + error_str = "Invalid checksum or length of Base58 address"; + } + return CNoDestination(); } + data.clear(); const auto dec = bech32::Decode(str); if ((dec.encoding == bech32::Encoding::BECH32 || dec.encoding == bech32::Encoding::BECH32M) && dec.data.size() > 0) { // Bech32 decoding - error_str = ""; if (dec.hrp != params.Bech32HRP()) { error_str = "Invalid prefix for Bech32 address"; return CNoDestination(); @@ -168,9 +187,10 @@ CTxDestination DecodeDestination(const std::string& str, const CChainParams& par } } - // Set error message if address can't be interpreted as Base58 or Bech32. - if (error_str.empty()) error_str = "Invalid address format"; - + // Perform Bech32 error location + auto res = bech32::LocateErrors(str); + error_str = res.first; + if (error_locations) *error_locations = std::move(res.second); return CNoDestination(); } } // namespace @@ -258,9 +278,9 @@ std::string EncodeDestination(const CTxDestination& dest) return std::visit(DestinationEncoder(Params()), dest); } -CTxDestination DecodeDestination(const std::string& str, std::string& error_msg) +CTxDestination DecodeDestination(const std::string& str, std::string& error_msg, std::vector<int>* error_locations) { - return DecodeDestination(str, Params(), error_msg); + return DecodeDestination(str, Params(), error_msg, error_locations); } CTxDestination DecodeDestination(const std::string& str) @@ -272,7 +292,7 @@ CTxDestination DecodeDestination(const std::string& str) bool IsValidDestinationString(const std::string& str, const CChainParams& params) { std::string error_msg; - return IsValidDestination(DecodeDestination(str, params, error_msg)); + return IsValidDestination(DecodeDestination(str, params, error_msg, nullptr)); } bool IsValidDestinationString(const std::string& str) |