diff options
author | Ryan Ofsky <ryan@ofsky.org> | 2022-04-12 03:00:28 -0400 |
---|---|---|
committer | Ryan Ofsky <ryan@ofsky.org> | 2022-04-26 10:09:39 -0400 |
commit | 1d4122dfefcb0a33c3d5bf7bbe2c7cd7e09d3764 (patch) | |
tree | d11be998fc19ca96b166d8f1f8c9b6ba84d1bc72 /src | |
parent | f4005af3ec455a7fcfb94aa1a6673e821ac3d743 (diff) | |
download | bitcoin-1d4122dfefcb0a33c3d5bf7bbe2c7cd7e09d3764.tar.xz |
init: Allow -proxy="" setting values
This drops the `No proxy server specified. Use -proxy=<ip> or -proxy=<ip:port>`
error when a empty `-proxy=` command line argument, `bitcoin.conf` value, or
`settings.json` value is specified, and just makes bitcoin connect and listen
normally in these cases.
The error was originally added in https://github.com/bitcoin/bitcoin/pull/20003
to prevent a bare `-proxy` command line argument with no assignment from
clearing proxy settings. But it was implemented in an overbroad way breaking
empty `-proxy=` assignments as well.
The motivation for this change is to prevent a GUI bug that happens with
https://github.com/bitcoin/bitcoin/pull/15936, reported in
https://github.com/bitcoin/bitcoin/pull/15936#pullrequestreview-937685759 by
vasild, that happens after a proxy setting is enabled and disabled in the GUI.
But this change also makes sense on its own to remove a potentially confusing
error message.
Diffstat (limited to 'src')
-rw-r--r-- | src/init.cpp | 6 | ||||
-rw-r--r-- | src/util/system.cpp | 18 | ||||
-rw-r--r-- | src/util/system.h | 1 |
3 files changed, 13 insertions, 12 deletions
diff --git a/src/init.cpp b/src/init.cpp index 69f9452ec7..0ca05eeeb2 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -470,7 +470,7 @@ void SetupServerArgs(ArgsManager& argsman) // TODO: remove the sentence "Nodes not using ... incoming connections." once the changes from // https://github.com/bitcoin/bitcoin/pull/23542 have become widespread. argsman.AddArg("-port=<port>", strprintf("Listen for connections on <port>. Nodes not using the default ports (default: %u, testnet: %u, signet: %u, regtest: %u) are unlikely to get incoming connections. Not relevant for I2P (see doc/i2p.md).", defaultChainParams->GetDefaultPort(), testnetChainParams->GetDefaultPort(), signetChainParams->GetDefaultPort(), regtestChainParams->GetDefaultPort()), ArgsManager::ALLOW_ANY | ArgsManager::NETWORK_ONLY, OptionsCategory::CONNECTION); - argsman.AddArg("-proxy=<ip:port>", "Connect through SOCKS5 proxy, set -noproxy to disable (default: disabled)", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION); + argsman.AddArg("-proxy=<ip:port>", "Connect through SOCKS5 proxy, set -noproxy to disable (default: disabled)", ArgsManager::ALLOW_ANY | ArgsManager::DISALLOW_ELISION, OptionsCategory::CONNECTION); argsman.AddArg("-proxyrandomize", strprintf("Randomize credentials for every proxy connection. This enables Tor stream isolation (default: %u)", DEFAULT_PROXYRANDOMIZE), ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION); argsman.AddArg("-seednode=<ip>", "Connect to a node to retrieve peer addresses, and disconnect. This option can be specified multiple times to connect to multiple nodes.", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION); argsman.AddArg("-networkactive", "Enable all P2P network activity (default: 1). Can be changed by the setnetworkactive RPC command", ArgsManager::ALLOW_ANY, OptionsCategory::CONNECTION); @@ -1029,10 +1029,6 @@ bool AppInitParameterInteraction(const ArgsManager& args, bool use_syscall_sandb nMaxTipAge = args.GetIntArg("-maxtipage", DEFAULT_MAX_TIP_AGE); - if (args.IsArgSet("-proxy") && args.GetArg("-proxy", "").empty()) { - return InitError(_("No proxy server specified. Use -proxy=<ip> or -proxy=<ip:port>.")); - } - if (args.GetBoolArg("-reindex-chainstate", false)) { // indexes that must be deactivated to prevent index corruption, see #24630 if (args.GetBoolArg("-coinstatsindex", DEFAULT_COINSTATSINDEX)) { diff --git a/src/util/system.cpp b/src/util/system.cpp index a7e66defcd..b0138e1d51 100644 --- a/src/util/system.cpp +++ b/src/util/system.cpp @@ -236,7 +236,7 @@ KeyInfo InterpretKey(std::string key) * @return parsed settings value if it is valid, otherwise nullopt accompanied * by a descriptive error string */ -static std::optional<util::SettingsValue> InterpretValue(const KeyInfo& key, const std::string& value, +static std::optional<util::SettingsValue> InterpretValue(const KeyInfo& key, const std::string* value, unsigned int flags, std::string& error) { // Return negated settings as false values. @@ -246,13 +246,17 @@ static std::optional<util::SettingsValue> InterpretValue(const KeyInfo& key, con return std::nullopt; } // Double negatives like -nofoo=0 are supported (but discouraged) - if (!InterpretBool(value)) { - LogPrintf("Warning: parsed potentially confusing double-negative -%s=%s\n", key.name, value); + if (value && !InterpretBool(*value)) { + LogPrintf("Warning: parsed potentially confusing double-negative -%s=%s\n", key.name, *value); return true; } return false; } - return value; + if (!value && (flags & ArgsManager::DISALLOW_ELISION)) { + error = strprintf("Can not set -%s with no value. Please specify value with -%s=value.", key.name, key.name); + return std::nullopt; + } + return value ? *value : ""; } // Define default constructor and destructor that are not inline, so code instantiating this class doesn't need to @@ -320,7 +324,7 @@ bool ArgsManager::ParseParameters(int argc, const char* const argv[], std::strin #endif if (key == "-") break; //bitcoin-tx using stdin - std::string val; + std::optional<std::string> val; size_t is_index = key.find('='); if (is_index != std::string::npos) { val = key.substr(is_index + 1); @@ -366,7 +370,7 @@ bool ArgsManager::ParseParameters(int argc, const char* const argv[], std::strin return false; } - std::optional<util::SettingsValue> value = InterpretValue(keyinfo, val, *flags, error); + std::optional<util::SettingsValue> value = InterpretValue(keyinfo, val ? &*val : nullptr, *flags, error); if (!value) return false; m_settings.command_line_options[keyinfo.name].push_back(*value); @@ -887,7 +891,7 @@ bool ArgsManager::ReadConfigStream(std::istream& stream, const std::string& file KeyInfo key = InterpretKey(option.first); std::optional<unsigned int> flags = GetArgFlags('-' + key.name); if (flags) { - std::optional<util::SettingsValue> value = InterpretValue(key, option.second, *flags, error); + std::optional<util::SettingsValue> value = InterpretValue(key, &option.second, *flags, error); if (!value) { return false; } diff --git a/src/util/system.h b/src/util/system.h index a66b597d41..96f5b51bf4 100644 --- a/src/util/system.h +++ b/src/util/system.h @@ -175,6 +175,7 @@ public: // ALLOW_STRING = 0x08, //!< unimplemented, draft implementation in #16545 // ALLOW_LIST = 0x10, //!< unimplemented, draft implementation in #16545 DISALLOW_NEGATION = 0x20, //!< disallow -nofoo syntax + DISALLOW_ELISION = 0x40, //!< disallow -foo syntax that doesn't assign any value DEBUG_ONLY = 0x100, /* Some options would cause cross-contamination if values for |