// Copyright (c) 2014-2020, The Monero Project // // All rights reserved. // // Redistribution and use in source and binary forms, with or without modification, are // permitted provided that the following conditions are met: // // 1. Redistributions of source code must retain the above copyright notice, this list of // conditions and the following disclaimer. // // 2. Redistributions in binary form must reproduce the above copyright notice, this list // of conditions and the following disclaimer in the documentation and/or other // materials provided with the distribution. // // 3. Neither the name of the copyright holder nor the names of its contributors may be // used to endorse or promote products derived from this software without specific // prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL // THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // #include "rpc_args.h" #include #include #include #include "common/command_line.h" #include "common/i18n.h" #include "hex.h" namespace cryptonote { namespace { boost::optional do_process_ssl(const boost::program_options::variables_map& vm, const rpc_args::descriptors& arg, const bool any_cert_option) { bool ssl_required = false; epee::net_utils::ssl_options_t ssl_options = epee::net_utils::ssl_support_t::e_ssl_support_enabled; if (any_cert_option && command_line::get_arg(vm, arg.rpc_ssl_allow_any_cert)) ssl_options.verification = epee::net_utils::ssl_verification_t::none; else { std::string ssl_ca_file = command_line::get_arg(vm, arg.rpc_ssl_ca_certificates); const std::vector ssl_allowed_fingerprints = command_line::get_arg(vm, arg.rpc_ssl_allowed_fingerprints); std::vector> allowed_fingerprints{ ssl_allowed_fingerprints.size() }; std::transform(ssl_allowed_fingerprints.begin(), ssl_allowed_fingerprints.end(), allowed_fingerprints.begin(), epee::from_hex_locale::to_vector); for (const auto &fpr: allowed_fingerprints) { if (fpr.size() != SSL_FINGERPRINT_SIZE) { MERROR("SHA-256 fingerprint should be " BOOST_PP_STRINGIZE(SSL_FINGERPRINT_SIZE) " bytes long."); return boost::none; } } if (!allowed_fingerprints.empty() || !ssl_ca_file.empty()) { ssl_required = true; ssl_options = epee::net_utils::ssl_options_t{ std::move(allowed_fingerprints), std::move(ssl_ca_file) }; if (command_line::get_arg(vm, arg.rpc_ssl_allow_chained)) ssl_options.verification = epee::net_utils::ssl_verification_t::user_ca; } } // user specified CA file or fingeprints implies enabled SSL by default if (!ssl_required && !epee::net_utils::ssl_support_from_string(ssl_options.support, command_line::get_arg(vm, arg.rpc_ssl))) { MERROR("Invalid argument for " << std::string(arg.rpc_ssl.name)); return boost::none; } ssl_options.auth = epee::net_utils::ssl_authentication_t{ command_line::get_arg(vm, arg.rpc_ssl_private_key), command_line::get_arg(vm, arg.rpc_ssl_certificate) }; return {std::move(ssl_options)}; } } // anonymous rpc_args::descriptors::descriptors() : rpc_bind_ip({"rpc-bind-ip", rpc_args::tr("Specify IP to bind RPC server"), "127.0.0.1"}) , rpc_bind_ipv6_address({"rpc-bind-ipv6-address", rpc_args::tr("Specify IPv6 address to bind RPC server"), "::1"}) , rpc_use_ipv6({"rpc-use-ipv6", rpc_args::tr("Allow IPv6 for RPC"), false}) , rpc_ignore_ipv4({"rpc-ignore-ipv4", rpc_args::tr("Ignore unsuccessful IPv4 bind for RPC"), false}) , rpc_login({"rpc-login", rpc_args::tr("Specify username[:password] required for RPC server"), "", true}) , confirm_external_bind({"confirm-external-bind", rpc_args::tr("Confirm rpc-bind-ip value is NOT a loopback (local) IP")}) , rpc_access_control_origins({"rpc-access-control-origins", rpc_args::tr("Specify a comma separated list of origins to allow cross origin resource sharing"), ""}) , rpc_ssl({"rpc-ssl", rpc_args::tr("Enable SSL on RPC connections: enabled|disabled|autodetect"), "autodetect"}) , rpc_ssl_private_key({"rpc-ssl-private-key", rpc_args::tr("Path to a PEM format private key"), ""}) , rpc_ssl_certificate({"rpc-ssl-certificate", rpc_args::tr("Path to a PEM format certificate"), ""}) , rpc_ssl_ca_certificates({"rpc-ssl-ca-certificates", rpc_args::tr("Path to file containing concatenated PEM format certificate(s) to replace system CA(s)."), ""}) , rpc_ssl_allowed_fingerprints({"rpc-ssl-allowed-fingerprints", rpc_args::tr("List of certificate fingerprints to allow")}) , rpc_ssl_allow_chained({"rpc-ssl-allow-chained", rpc_args::tr("Allow user (via --rpc-ssl-certificates) chain certificates"), false}) , rpc_ssl_allow_any_cert({"rpc-ssl-allow-any-cert", rpc_args::tr("Allow any peer certificate"), false}) , disable_rpc_ban({"disable-rpc-ban", rpc_args::tr("Do not ban hosts on RPC errors"), false, false}) {} const char* rpc_args::tr(const char* str) { return i18n_translate(str, "cryptonote::rpc_args"); } void rpc_args::init_options(boost::program_options::options_description& desc, const bool any_cert_option) { const descriptors arg{}; command_line::add_arg(desc, arg.rpc_bind_ip); command_line::add_arg(desc, arg.rpc_bind_ipv6_address); command_line::add_arg(desc, arg.rpc_use_ipv6); command_line::add_arg(desc, arg.rpc_ignore_ipv4); command_line::add_arg(desc, arg.rpc_login); command_line::add_arg(desc, arg.confirm_external_bind); command_line::add_arg(desc, arg.rpc_access_control_origins); command_line::add_arg(desc, arg.rpc_ssl); command_line::add_arg(desc, arg.rpc_ssl_private_key); command_line::add_arg(desc, arg.rpc_ssl_certificate); command_line::add_arg(desc, arg.rpc_ssl_ca_certificates); command_line::add_arg(desc, arg.rpc_ssl_allowed_fingerprints); command_line::add_arg(desc, arg.rpc_ssl_allow_chained); command_line::add_arg(desc, arg.disable_rpc_ban); if (any_cert_option) command_line::add_arg(desc, arg.rpc_ssl_allow_any_cert); } boost::optional rpc_args::process(const boost::program_options::variables_map& vm, const bool any_cert_option) { const descriptors arg{}; rpc_args config{}; config.bind_ip = command_line::get_arg(vm, arg.rpc_bind_ip); config.bind_ipv6_address = command_line::get_arg(vm, arg.rpc_bind_ipv6_address); config.use_ipv6 = command_line::get_arg(vm, arg.rpc_use_ipv6); config.require_ipv4 = !command_line::get_arg(vm, arg.rpc_ignore_ipv4); config.disable_rpc_ban = command_line::get_arg(vm, arg.disable_rpc_ban); if (!config.bind_ip.empty()) { // always parse IP here for error consistency boost::system::error_code ec{}; const auto parsed_ip = boost::asio::ip::address::from_string(config.bind_ip, ec); if (ec) { LOG_ERROR(tr("Invalid IP address given for --") << arg.rpc_bind_ip.name); return boost::none; } if (!parsed_ip.is_loopback() && !command_line::get_arg(vm, arg.confirm_external_bind)) { LOG_ERROR( "--" << arg.rpc_bind_ip.name << tr(" permits inbound unencrypted external connections. Consider SSH tunnel or SSL proxy instead. Override with --") << arg.confirm_external_bind.name ); return boost::none; } } if (!config.bind_ipv6_address.empty()) { // allow square braces, but remove them here if present if (config.bind_ipv6_address.find('[') != std::string::npos) { config.bind_ipv6_address = config.bind_ipv6_address.substr(1, config.bind_ipv6_address.size() - 2); } // always parse IP here for error consistency boost::system::error_code ec{}; const auto parsed_ip = boost::asio::ip::address::from_string(config.bind_ipv6_address, ec); if (ec) { LOG_ERROR(tr("Invalid IP address given for --") << arg.rpc_bind_ipv6_address.name); return boost::none; } if (!parsed_ip.is_loopback() && !command_line::get_arg(vm, arg.confirm_external_bind)) { LOG_ERROR( "--" << arg.rpc_bind_ipv6_address.name << tr(" permits inbound unencrypted external connections. Consider SSH tunnel or SSL proxy instead. Override with --") << arg.confirm_external_bind.name ); return boost::none; } } const char *env_rpc_login = nullptr; const bool has_rpc_arg = command_line::has_arg(vm, arg.rpc_login); const bool use_rpc_env = !has_rpc_arg && (env_rpc_login = getenv("RPC_LOGIN")) != nullptr && strlen(env_rpc_login) > 0; boost::optional login{}; if (has_rpc_arg || use_rpc_env) { config.login = tools::login::parse( has_rpc_arg ? command_line::get_arg(vm, arg.rpc_login) : std::string(env_rpc_login), true, [](bool verify) { return tools::password_container::prompt(verify, "RPC server password"); }); if (!config.login) return boost::none; if (config.login->username.empty()) { LOG_ERROR(tr("Username specified with --") << arg.rpc_login.name << tr(" cannot be empty")); return boost::none; } } auto access_control_origins_input = command_line::get_arg(vm, arg.rpc_access_control_origins); if (!access_control_origins_input.empty()) { if (!config.login) { LOG_ERROR(arg.rpc_access_control_origins.name << tr(" requires RPC server password --") << arg.rpc_login.name << tr(" cannot be empty")); return boost::none; } std::vector access_control_origins; boost::split(access_control_origins, access_control_origins_input, boost::is_any_of(",")); std::for_each(access_control_origins.begin(), access_control_origins.end(), boost::bind(&boost::trim, _1, std::locale::classic())); config.access_control_origins = std::move(access_control_origins); } auto ssl_options = do_process_ssl(vm, arg, any_cert_option); if (!ssl_options) return boost::none; config.ssl_options = std::move(*ssl_options); return {std::move(config)}; } boost::optional rpc_args::process_ssl(const boost::program_options::variables_map& vm, const bool any_cert_option) { const descriptors arg{}; return do_process_ssl(vm, arg, any_cert_option); } }