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239 lines
11 KiB
C++
239 lines
11 KiB
C++
// Copyright (c) 2014-2019, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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#include "rpc_args.h"
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#include <boost/algorithm/string.hpp>
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#include <boost/asio/ip/address.hpp>
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#include <boost/bind.hpp>
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#include "common/command_line.h"
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#include "common/i18n.h"
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#include "hex.h"
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namespace cryptonote
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{
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namespace
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{
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boost::optional<epee::net_utils::ssl_options_t> do_process_ssl(const boost::program_options::variables_map& vm, const rpc_args::descriptors& arg, const bool any_cert_option)
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{
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bool ssl_required = false;
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epee::net_utils::ssl_options_t ssl_options = epee::net_utils::ssl_support_t::e_ssl_support_enabled;
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if (any_cert_option && command_line::get_arg(vm, arg.rpc_ssl_allow_any_cert))
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ssl_options.verification = epee::net_utils::ssl_verification_t::none;
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else
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{
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std::string ssl_ca_file = command_line::get_arg(vm, arg.rpc_ssl_ca_certificates);
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const std::vector<std::string> ssl_allowed_fingerprints = command_line::get_arg(vm, arg.rpc_ssl_allowed_fingerprints);
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std::vector<std::vector<uint8_t>> allowed_fingerprints{ ssl_allowed_fingerprints.size() };
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std::transform(ssl_allowed_fingerprints.begin(), ssl_allowed_fingerprints.end(), allowed_fingerprints.begin(), epee::from_hex::vector);
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for (const auto &fpr: allowed_fingerprints)
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{
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if (fpr.size() != SSL_FINGERPRINT_SIZE)
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{
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MERROR("SHA-256 fingerprint should be " BOOST_PP_STRINGIZE(SSL_FINGERPRINT_SIZE) " bytes long.");
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return boost::none;
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}
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}
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if (!allowed_fingerprints.empty() || !ssl_ca_file.empty())
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{
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ssl_required = true;
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ssl_options = epee::net_utils::ssl_options_t{
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std::move(allowed_fingerprints), std::move(ssl_ca_file)
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};
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if (command_line::get_arg(vm, arg.rpc_ssl_allow_chained))
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ssl_options.verification = epee::net_utils::ssl_verification_t::user_ca;
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}
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}
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// user specified CA file or fingeprints implies enabled SSL by default
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if (!ssl_required && !epee::net_utils::ssl_support_from_string(ssl_options.support, command_line::get_arg(vm, arg.rpc_ssl)))
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{
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MERROR("Invalid argument for " << std::string(arg.rpc_ssl.name));
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return boost::none;
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}
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ssl_options.auth = epee::net_utils::ssl_authentication_t{
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command_line::get_arg(vm, arg.rpc_ssl_private_key), command_line::get_arg(vm, arg.rpc_ssl_certificate)
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};
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return {std::move(ssl_options)};
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}
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} // anonymous
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rpc_args::descriptors::descriptors()
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: rpc_bind_ip({"rpc-bind-ip", rpc_args::tr("Specify IP to bind RPC server"), "127.0.0.1"})
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, rpc_bind_ipv6_address({"rpc-bind-ipv6-address", rpc_args::tr("Specify IPv6 address to bind RPC server"), "::1"})
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, rpc_use_ipv6({"rpc-use-ipv6", rpc_args::tr("Allow IPv6 for RPC"), false})
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, rpc_ignore_ipv4({"rpc-ignore-ipv4", rpc_args::tr("Ignore unsuccessful IPv4 bind for RPC"), false})
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, rpc_login({"rpc-login", rpc_args::tr("Specify username[:password] required for RPC server"), "", true})
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, confirm_external_bind({"confirm-external-bind", rpc_args::tr("Confirm rpc-bind-ip value is NOT a loopback (local) IP")})
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, rpc_access_control_origins({"rpc-access-control-origins", rpc_args::tr("Specify a comma separated list of origins to allow cross origin resource sharing"), ""})
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, rpc_ssl({"rpc-ssl", rpc_args::tr("Enable SSL on RPC connections: enabled|disabled|autodetect"), "autodetect"})
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, rpc_ssl_private_key({"rpc-ssl-private-key", rpc_args::tr("Path to a PEM format private key"), ""})
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, rpc_ssl_certificate({"rpc-ssl-certificate", rpc_args::tr("Path to a PEM format certificate"), ""})
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, 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)."), ""})
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, rpc_ssl_allowed_fingerprints({"rpc-ssl-allowed-fingerprints", rpc_args::tr("List of certificate fingerprints to allow")})
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, rpc_ssl_allow_chained({"rpc-ssl-allow-chained", rpc_args::tr("Allow user (via --rpc-ssl-certificates) chain certificates"), false})
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, rpc_ssl_allow_any_cert({"rpc-ssl-allow-any-cert", rpc_args::tr("Allow any peer certificate"), false})
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{}
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const char* rpc_args::tr(const char* str) { return i18n_translate(str, "cryptonote::rpc_args"); }
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void rpc_args::init_options(boost::program_options::options_description& desc, const bool any_cert_option)
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{
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const descriptors arg{};
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command_line::add_arg(desc, arg.rpc_bind_ip);
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command_line::add_arg(desc, arg.rpc_bind_ipv6_address);
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command_line::add_arg(desc, arg.rpc_use_ipv6);
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command_line::add_arg(desc, arg.rpc_ignore_ipv4);
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command_line::add_arg(desc, arg.rpc_login);
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command_line::add_arg(desc, arg.confirm_external_bind);
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command_line::add_arg(desc, arg.rpc_access_control_origins);
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command_line::add_arg(desc, arg.rpc_ssl);
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command_line::add_arg(desc, arg.rpc_ssl_private_key);
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command_line::add_arg(desc, arg.rpc_ssl_certificate);
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command_line::add_arg(desc, arg.rpc_ssl_ca_certificates);
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command_line::add_arg(desc, arg.rpc_ssl_allowed_fingerprints);
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command_line::add_arg(desc, arg.rpc_ssl_allow_chained);
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if (any_cert_option)
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command_line::add_arg(desc, arg.rpc_ssl_allow_any_cert);
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}
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boost::optional<rpc_args> rpc_args::process(const boost::program_options::variables_map& vm, const bool any_cert_option)
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{
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const descriptors arg{};
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rpc_args config{};
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config.bind_ip = command_line::get_arg(vm, arg.rpc_bind_ip);
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config.bind_ipv6_address = command_line::get_arg(vm, arg.rpc_bind_ipv6_address);
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config.use_ipv6 = command_line::get_arg(vm, arg.rpc_use_ipv6);
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config.require_ipv4 = !command_line::get_arg(vm, arg.rpc_ignore_ipv4);
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if (!config.bind_ip.empty())
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{
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// always parse IP here for error consistency
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boost::system::error_code ec{};
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const auto parsed_ip = boost::asio::ip::address::from_string(config.bind_ip, ec);
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if (ec)
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{
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LOG_ERROR(tr("Invalid IP address given for --") << arg.rpc_bind_ip.name);
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return boost::none;
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}
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if (!parsed_ip.is_loopback() && !command_line::get_arg(vm, arg.confirm_external_bind))
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{
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LOG_ERROR(
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"--" << arg.rpc_bind_ip.name <<
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tr(" permits inbound unencrypted external connections. Consider SSH tunnel or SSL proxy instead. Override with --") <<
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arg.confirm_external_bind.name
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);
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return boost::none;
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}
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}
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if (!config.bind_ipv6_address.empty())
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{
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// allow square braces, but remove them here if present
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if (config.bind_ipv6_address.find('[') != std::string::npos)
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{
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config.bind_ipv6_address = config.bind_ipv6_address.substr(1, config.bind_ipv6_address.size() - 2);
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}
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// always parse IP here for error consistency
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boost::system::error_code ec{};
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const auto parsed_ip = boost::asio::ip::address::from_string(config.bind_ipv6_address, ec);
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if (ec)
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{
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LOG_ERROR(tr("Invalid IP address given for --") << arg.rpc_bind_ipv6_address.name);
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return boost::none;
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}
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if (!parsed_ip.is_loopback() && !command_line::get_arg(vm, arg.confirm_external_bind))
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{
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LOG_ERROR(
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"--" << arg.rpc_bind_ipv6_address.name <<
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tr(" permits inbound unencrypted external connections. Consider SSH tunnel or SSL proxy instead. Override with --") <<
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arg.confirm_external_bind.name
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);
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return boost::none;
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}
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}
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const char *env_rpc_login = nullptr;
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const bool has_rpc_arg = command_line::has_arg(vm, arg.rpc_login);
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const bool use_rpc_env = !has_rpc_arg && (env_rpc_login = getenv("RPC_LOGIN")) != nullptr && strlen(env_rpc_login) > 0;
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boost::optional<tools::login> login{};
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if (has_rpc_arg || use_rpc_env)
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{
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config.login = tools::login::parse(
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has_rpc_arg ? command_line::get_arg(vm, arg.rpc_login) : std::string(env_rpc_login), true, [](bool verify) {
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return tools::password_container::prompt(verify, "RPC server password");
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});
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if (!config.login)
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return boost::none;
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if (config.login->username.empty())
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{
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LOG_ERROR(tr("Username specified with --") << arg.rpc_login.name << tr(" cannot be empty"));
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return boost::none;
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}
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}
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auto access_control_origins_input = command_line::get_arg(vm, arg.rpc_access_control_origins);
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if (!access_control_origins_input.empty())
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{
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if (!config.login)
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{
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LOG_ERROR(arg.rpc_access_control_origins.name << tr(" requires RPC server password --") << arg.rpc_login.name << tr(" cannot be empty"));
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return boost::none;
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}
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std::vector<std::string> access_control_origins;
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boost::split(access_control_origins, access_control_origins_input, boost::is_any_of(","));
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std::for_each(access_control_origins.begin(), access_control_origins.end(), boost::bind(&boost::trim<std::string>, _1, std::locale::classic()));
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config.access_control_origins = std::move(access_control_origins);
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}
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auto ssl_options = do_process_ssl(vm, arg, any_cert_option);
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if (!ssl_options)
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return boost::none;
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config.ssl_options = std::move(*ssl_options);
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return {std::move(config)};
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}
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boost::optional<epee::net_utils::ssl_options_t> rpc_args::process_ssl(const boost::program_options::variables_map& vm, const bool any_cert_option)
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{
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const descriptors arg{};
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return do_process_ssl(vm, arg, any_cert_option);
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}
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}
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