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803 lines
20 KiB
C++
803 lines
20 KiB
C++
#include <config/config.hpp>
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#include <config/ini.hpp>
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#include <constants/defaults.hpp>
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#include <constants/limits.hpp>
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#include <net/net.hpp>
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#include <router_contact.hpp>
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#include <util/fs.hpp>
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#include <util/logging/logger_syslog.hpp>
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#include <util/logging/logger.hpp>
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#include <util/mem.hpp>
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#include <util/str.hpp>
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#include <util/lokinet_init.h>
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#include <cstdlib>
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#include <fstream>
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#include <ios>
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#include <iostream>
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namespace llarp
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{
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const char*
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lokinetEnv(string_view suffix)
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{
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std::string env;
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env.reserve(8 + suffix.size());
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env.append("LOKINET_"s);
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env.append(suffix.begin(), suffix.end());
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return std::getenv(env.c_str());
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}
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std::string
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fromEnv(string_view val, string_view envNameSuffix)
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{
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if (const char* ptr = lokinetEnv(envNameSuffix))
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return ptr;
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return {val.begin(), val.end()};
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}
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int
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fromEnv(const int& val, string_view envNameSuffix)
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{
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if (const char* ptr = lokinetEnv(envNameSuffix))
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return std::atoi(ptr);
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return val;
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}
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uint16_t
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fromEnv(const uint16_t& val, string_view envNameSuffix)
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{
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if (const char* ptr = lokinetEnv(envNameSuffix))
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return std::atoi(ptr);
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return val;
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}
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size_t
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fromEnv(const size_t& val, string_view envNameSuffix)
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{
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if (const char* ptr = lokinetEnv(envNameSuffix))
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return std::atoll(ptr);
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return val;
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}
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nonstd::optional<bool>
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fromEnv(const nonstd::optional<bool>& val, string_view envNameSuffix)
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{
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if (const char* ptr = lokinetEnv(envNameSuffix))
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return IsTrueValue(ptr);
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return val;
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}
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int
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svtoi(string_view val)
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{
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return std::atoi(val.data());
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}
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nonstd::optional<bool>
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setOptBool(string_view val)
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{
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if (IsTrueValue(val))
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{
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return true;
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}
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else if (IsFalseValue(val))
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{
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return false;
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}
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return {};
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}
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void
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RouterConfig::fromSection(string_view key, string_view val)
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{
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if (key == "job-queue-size")
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{
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auto sval = svtoi(val);
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if (sval >= 1024)
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{
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m_JobQueueSize = sval;
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LogInfo("Set job queue size to ", m_JobQueueSize);
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}
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}
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if (key == "default-protocol")
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{
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m_DefaultLinkProto = str(val);
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LogInfo("overriding default link protocol to '", val, "'");
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}
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if (key == "netid")
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{
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if (val.size() <= NetID::size())
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{
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m_netId = str(val);
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LogInfo("setting netid to '", val, "'");
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}
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else
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{
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llarp::LogError("invalid netid '", val, "', is too long");
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}
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}
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if (key == "max-connections")
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{
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auto ival = svtoi(val);
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if (ival > 0)
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{
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m_maxConnectedRouters = ival;
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LogInfo("max connections set to ", m_maxConnectedRouters);
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}
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}
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if (key == "min-connections")
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{
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auto ival = svtoi(val);
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if (ival > 0)
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{
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m_minConnectedRouters = ival;
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LogInfo("min connections set to ", m_minConnectedRouters);
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}
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}
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if (key == "nickname")
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{
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m_nickname = str(val);
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// set logger name here
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LogContext::Instance().nodeName = nickname();
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LogInfo("nickname set");
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}
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if (key == "encryption-privkey")
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{
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m_encryptionKeyfile = str(val);
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LogDebug("encryption key set to ", m_encryptionKeyfile);
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}
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if (key == "contact-file")
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{
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m_ourRcFile = str(val);
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LogDebug("rc file set to ", m_ourRcFile);
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}
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if (key == "transport-privkey")
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{
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m_transportKeyfile = str(val);
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LogDebug("transport key set to ", m_transportKeyfile);
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}
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if ((key == "identity-privkey" || key == "ident-privkey"))
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{
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m_identKeyfile = str(val);
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LogDebug("identity key set to ", m_identKeyfile);
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}
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if (key == "public-address" || key == "public-ip")
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{
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llarp::LogInfo("public ip ", val, " size ", val.size());
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if (val.size() < 17)
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{
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// assume IPv4
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llarp::Addr a(val);
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llarp::LogInfo("setting public ipv4 ", a);
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m_addrInfo.ip = *a.addr6();
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m_publicOverride = true;
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}
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}
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if (key == "public-port")
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{
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llarp::LogInfo("Setting public port ", val);
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int p = svtoi(val);
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// Not needed to flip upside-down - this is done in llarp::Addr(const
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// AddressInfo&)
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m_ip4addr.sin_port = p;
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m_addrInfo.port = p;
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m_publicOverride = true;
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}
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if (key == "worker-threads" || key == "threads")
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{
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m_workerThreads = svtoi(val);
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if (m_workerThreads <= 0)
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{
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LogWarn("worker threads invalid value: '", val, "' defaulting to 1");
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m_workerThreads = 1;
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}
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else
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{
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LogDebug("set to use ", m_workerThreads, " worker threads");
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}
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}
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if (key == "net-threads")
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{
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m_numNetThreads = svtoi(val);
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if (m_numNetThreads <= 0)
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{
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LogWarn("net threads invalid value: '", val, "' defaulting to 1");
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m_numNetThreads = 1;
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}
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else
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{
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LogDebug("set to use ", m_numNetThreads, " net threads");
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}
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}
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if (key == "block-bogons")
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{
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m_blockBogons = setOptBool(val);
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}
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}
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void
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NetworkConfig::fromSection(string_view key, string_view val)
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{
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if (key == "profiling")
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{
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m_enableProfiling = setOptBool(val);
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}
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else if (key == "profiles")
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{
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m_routerProfilesFile = str(val);
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llarp::LogInfo("setting profiles to ", routerProfilesFile());
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}
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else if (key == "strict-connect")
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{
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m_strictConnect = str(val);
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}
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else
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{
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m_netConfig.emplace(str(key), str(val)); // str()'s here for gcc 5 compat
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}
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}
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void
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NetdbConfig::fromSection(string_view key, string_view val)
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{
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if (key == "dir")
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{
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m_nodedbDir = str(val);
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}
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}
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void
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DnsConfig::fromSection(string_view key, string_view val)
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{
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if (key == "upstream")
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{
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llarp::LogInfo("add upstream resolver ", val);
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netConfig.emplace("upstream-dns", str(val)); // str() for gcc 5 compat
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}
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if (key == "bind")
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{
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llarp::LogInfo("set local dns to ", val);
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netConfig.emplace("local-dns", str(val)); // str() for gcc 5 compat
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}
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}
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void
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LinksConfig::fromSection(string_view key, string_view val)
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{
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uint16_t proto = 0;
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std::unordered_set<std::string> parsed_opts;
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std::string::size_type idx;
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static constexpr char delimiter = ',';
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do
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{
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idx = val.find_first_of(delimiter);
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if (idx != string_view::npos)
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{
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parsed_opts.emplace(TrimWhitespace(val.substr(0, idx)));
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val.remove_prefix(idx + 1);
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}
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else
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{
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parsed_opts.emplace(TrimWhitespace(val));
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}
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} while (idx != string_view::npos);
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std::unordered_set<std::string> opts;
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/// for each option
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for (const auto& item : parsed_opts)
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{
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/// see if it's a number
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auto port = std::atoi(item.c_str());
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if (port > 0)
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{
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/// set port
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if (proto == 0)
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{
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proto = port;
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}
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}
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else
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{
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opts.insert(item);
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}
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}
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if (key == "*")
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{
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m_OutboundLink =
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std::make_tuple("*", AF_INET, fromEnv(proto, "OUTBOUND_PORT"), std::move(opts));
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}
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else
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{
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// str() here for gcc 5 compat
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m_InboundLinks.emplace_back(str(key), AF_INET, proto, std::move(opts));
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}
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}
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void
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ConnectConfig::fromSection(string_view /*key*/, string_view val)
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{
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routers.emplace_back(val.begin(), val.end());
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}
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void
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ServicesConfig::fromSection(string_view key, string_view val)
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{
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services.emplace_back(str(key), str(val)); // str()'s here for gcc 5 compat
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}
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void
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SystemConfig::fromSection(string_view key, string_view val)
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{
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if (key == "pidfile")
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{
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pidfile = str(val);
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}
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}
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void
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ApiConfig::fromSection(string_view key, string_view val)
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{
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if (key == "enabled")
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{
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m_enableRPCServer = IsTrueValue(val);
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}
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if (key == "bind")
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{
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m_rpcBindAddr = str(val);
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}
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if (key == "authkey")
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{
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// TODO: add pubkey to whitelist
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}
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}
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void
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LokidConfig::fromSection(string_view key, string_view val)
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{
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if (key == "service-node-seed")
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{
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usingSNSeed = true;
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ident_keyfile = std::string{val};
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}
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if (key == "enabled")
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{
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whitelistRouters = IsTrueValue(val);
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}
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if (key == "jsonrpc" || key == "addr")
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{
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lokidRPCAddr = str(val);
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}
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if (key == "username")
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{
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lokidRPCUser = str(val);
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}
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if (key == "password")
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{
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lokidRPCPassword = str(val);
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}
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}
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void
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BootstrapConfig::fromSection(string_view key, string_view val)
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{
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if (key == "add-node")
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{
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routers.emplace_back(val.begin(), val.end());
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}
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}
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void
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LoggingConfig::fromSection(string_view key, string_view val)
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{
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if (key == "type" && val == "syslog")
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{
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// TODO(despair): write event log syslog class
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#if defined(_WIN32)
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LogError("syslog not supported on win32");
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#else
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LogInfo("Switching to syslog");
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LogContext::Instance().logStream = std::make_unique<SysLogStream>();
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#endif
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}
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if (key == "level")
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{
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const auto maybe = LogLevelFromString(str(val));
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if (not maybe.has_value())
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{
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LogError("bad log level: ", val);
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return;
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}
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const LogLevel lvl = maybe.value();
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LogContext::Instance().runtimeLevel = lvl;
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LogInfo("Log level set to ", LogLevelToName(lvl));
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}
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if (key == "type" && val == "json")
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{
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m_LogJSON = true;
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}
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if (key == "file")
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{
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LogInfo("open log file: ", val);
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std::string fname{val};
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FILE* const logfile = ::fopen(fname.c_str(), "a");
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if (logfile)
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{
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m_LogFile = logfile;
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LogInfo("will log to file ", val);
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}
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else if (errno)
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{
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LogError("could not open log file at '", val, "': ", strerror(errno));
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errno = 0;
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}
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else
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{
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LogError(
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"failed to open log file at '", val, "' for an unknown reason, bailing tf out kbai");
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::abort();
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}
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}
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}
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template <typename Section, typename Config>
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Section
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find_section(Config& c, const std::string& name)
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{
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Section ret;
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auto visitor = [&ret](const ConfigParser::Section_t& section) -> bool {
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for (const auto& sec : section)
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{
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ret.fromSection(sec.first, sec.second);
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}
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return true;
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};
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if (c.VisitSection(name.c_str(), visitor))
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{
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return ret;
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}
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return {};
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}
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bool
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Config::Load(const char* fname)
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{
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ConfigParser parser;
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if (!parser.LoadFile(fname))
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{
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return false;
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}
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return parse(parser);
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}
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bool
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Config::LoadFromStr(string_view str)
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{
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ConfigParser parser;
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if (!parser.LoadFromStr(str))
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{
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return false;
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}
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return parse(parser);
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}
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bool
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Config::parse(const ConfigParser& parser)
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{
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if (Lokinet_INIT())
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return false;
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router = find_section<RouterConfig>(parser, "router");
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network = find_section<NetworkConfig>(parser, "network");
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connect = find_section<ConnectConfig>(parser, "connect");
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netdb = find_section<NetdbConfig>(parser, "netdb");
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dns = find_section<DnsConfig>(parser, "dns");
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links = find_section<LinksConfig>(parser, "bind");
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services = find_section<ServicesConfig>(parser, "services");
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system = find_section<SystemConfig>(parser, "system");
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api = find_section<ApiConfig>(parser, "api");
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lokid = find_section<LokidConfig>(parser, "lokid");
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bootstrap = find_section<BootstrapConfig>(parser, "bootstrap");
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logging = find_section<LoggingConfig>(parser, "logging");
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return true;
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}
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fs::path
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GetDefaultConfigDir()
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{
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#ifdef _WIN32
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const fs::path homedir = fs::path(getenv("APPDATA"));
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#else
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const fs::path homedir = fs::path(getenv("HOME"));
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#endif
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return homedir / fs::path(".lokinet");
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}
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fs::path
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GetDefaultConfigPath()
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{
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return GetDefaultConfigDir() / "lokinet.ini";
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}
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} // namespace llarp
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/// fname should be a relative path (from CWD) or absolute path to the config
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/// file
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extern "C" bool
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llarp_ensure_config(const char* fname, const char* basedir, bool overwrite, bool asRouter)
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{
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if (Lokinet_INIT())
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return false;
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std::error_code ec;
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if (fs::exists(fname, ec) && !overwrite)
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{
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return true;
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}
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if (ec)
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{
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llarp::LogError(ec);
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return false;
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}
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std::string basepath;
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if (basedir)
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{
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basepath = basedir;
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#ifndef _WIN32
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basepath += "/";
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#else
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basepath += "\\";
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#endif
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}
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llarp::LogInfo("Attempting to create config file ", fname);
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// abort if config already exists
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if (!asRouter)
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{
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if (fs::exists(fname, ec) && !overwrite)
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{
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llarp::LogError(fname, " currently exists, please use -f to overwrite");
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return true;
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}
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if (ec)
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{
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llarp::LogError(ec);
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return false;
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}
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}
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// write fname ini
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auto optional_f = llarp::util::OpenFileStream<std::ofstream>(fname, std::ios::binary);
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if (!optional_f || !optional_f.value().is_open())
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{
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llarp::LogError("failed to open ", fname, " for writing");
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return false;
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}
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|
auto& f = optional_f.value();
|
|
llarp_generic_ensure_config(f, basepath, asRouter);
|
|
if (asRouter)
|
|
{
|
|
llarp_ensure_router_config(f, basepath);
|
|
}
|
|
else
|
|
{
|
|
llarp_ensure_client_config(f, basepath);
|
|
}
|
|
llarp::LogInfo("Generated new config ", fname);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
llarp_generic_ensure_config(std::ofstream& f, std::string basepath, bool isRouter)
|
|
{
|
|
f << "# this configuration was auto generated with 'sane' defaults\n";
|
|
f << "# change these values as desired\n";
|
|
f << "\n\n";
|
|
f << "[router]\n";
|
|
f << "# number of crypto worker threads \n";
|
|
f << "threads=4\n";
|
|
f << "# path to store signed RC\n";
|
|
f << "contact-file=" << basepath << "self.signed\n";
|
|
f << "# path to store transport private key\n";
|
|
f << "transport-privkey=" << basepath << "transport.private\n";
|
|
f << "# path to store identity signing key\n";
|
|
f << "ident-privkey=" << basepath << "identity.private\n";
|
|
f << "# encryption key for onion routing\n";
|
|
f << "encryption-privkey=" << basepath << "encryption.private\n";
|
|
f << std::endl;
|
|
f << "# uncomment following line to set router nickname to 'lokinet'" << std::endl;
|
|
f << "#nickname=lokinet\n";
|
|
const auto limits = isRouter ? llarp::limits::snode : llarp::limits::client;
|
|
|
|
f << "# maintain min connections to other routers\n";
|
|
f << "min-routers=" << std::to_string(limits.DefaultMinRouters) << std::endl;
|
|
f << "# hard limit of routers globally we are connected to at any given "
|
|
"time\n";
|
|
f << "max-routers=" << std::to_string(limits.DefaultMaxRouters) << std::endl;
|
|
f << "\n\n";
|
|
|
|
// logging
|
|
f << "[logging]\n";
|
|
f << "level=info\n";
|
|
f << "# uncomment for logging to file\n";
|
|
f << "#type=file\n";
|
|
f << "#file=/path/to/logfile\n";
|
|
f << "# uncomment for syslog logging\n";
|
|
f << "#type=syslog\n";
|
|
|
|
f << "\n\n";
|
|
|
|
f << "# admin api\n";
|
|
f << "[api]\n";
|
|
f << "enabled=true\n";
|
|
f << "#authkey=insertpubkey1here\n";
|
|
f << "#authkey=insertpubkey2here\n";
|
|
f << "#authkey=insertpubkey3here\n";
|
|
f << "bind=127.0.0.1:1190\n";
|
|
f << "\n\n";
|
|
|
|
f << "# system settings for privileges and such\n";
|
|
f << "[system]\n";
|
|
f << "user=" << DEFAULT_LOKINET_USER << std::endl;
|
|
f << "group=" << DEFAULT_LOKINET_GROUP << std::endl;
|
|
f << "pidfile=" << basepath << "lokinet.pid\n";
|
|
f << "\n\n";
|
|
|
|
f << "# dns provider configuration section\n";
|
|
f << "[dns]\n";
|
|
f << "# resolver\n";
|
|
f << "upstream=" << DEFAULT_RESOLVER_US << std::endl;
|
|
|
|
// Make auto-config smarter
|
|
// will this break reproducibility rules?
|
|
// (probably)
|
|
#ifdef __linux__
|
|
#ifdef ANDROID
|
|
f << "bind=127.0.0.1:1153\n";
|
|
#else
|
|
f << "bind=127.3.2.1:53\n";
|
|
#endif
|
|
#else
|
|
f << "bind=127.0.0.1:53\n";
|
|
#endif
|
|
f << "\n\n";
|
|
|
|
f << "# network database settings block \n";
|
|
f << "[netdb]\n";
|
|
f << "# directory for network database skiplist storage\n";
|
|
f << "dir=" << basepath << "netdb\n";
|
|
f << "\n\n";
|
|
|
|
f << "# bootstrap settings\n";
|
|
f << "[bootstrap]\n";
|
|
f << "# add a bootstrap node's signed identity to the list of nodes we want "
|
|
"to bootstrap from\n";
|
|
f << "# if we don't have any peers we connect to this router\n";
|
|
f << "add-node=" << basepath << "bootstrap.signed\n";
|
|
// we only process one of these...
|
|
// f << "# add another bootstrap node\n";
|
|
// f << "#add-node=/path/to/alternative/self.signed\n";
|
|
f << "\n\n";
|
|
}
|
|
|
|
void
|
|
llarp_ensure_router_config(std::ofstream& f, std::string basepath)
|
|
{
|
|
f << "# lokid settings (disabled by default)\n";
|
|
f << "[lokid]\n";
|
|
f << "enabled=false\n";
|
|
f << "jsonrpc=127.0.0.1:22023\n";
|
|
f << "#service-node-seed=/path/to/servicenode/seed\n";
|
|
f << std::endl;
|
|
f << "# network settings \n";
|
|
f << "[network]\n";
|
|
f << "profiles=" << basepath << "profiles.dat\n";
|
|
// better to let the routers auto-configure
|
|
// f << "ifaddr=auto\n";
|
|
// f << "ifname=auto\n";
|
|
f << "enabled=true\n";
|
|
f << "exit=false\n";
|
|
f << "#exit-blacklist=tcp:25\n";
|
|
f << "#exit-whitelist=tcp:*\n";
|
|
f << "#exit-whitelist=udp:*\n";
|
|
f << std::endl;
|
|
f << "# ROUTERS ONLY: publish network interfaces for handling inbound "
|
|
"traffic\n";
|
|
f << "[bind]\n";
|
|
// get ifname
|
|
std::string ifname;
|
|
if (llarp::GetBestNetIF(ifname, AF_INET))
|
|
{
|
|
f << ifname << "=1090\n";
|
|
}
|
|
else
|
|
{
|
|
f << "# could not autodetect network interface\n"
|
|
<< "#eth0=1090\n";
|
|
}
|
|
|
|
f << std::endl;
|
|
}
|
|
|
|
bool
|
|
llarp_ensure_client_config(std::ofstream& f, std::string basepath)
|
|
{
|
|
// write snapp-example.ini
|
|
const std::string snappExample_fpath = basepath + "snapp-example.ini";
|
|
{
|
|
auto stream = llarp::util::OpenFileStream<std::ofstream>(snappExample_fpath, std::ios::binary);
|
|
if (!stream)
|
|
{
|
|
return false;
|
|
}
|
|
auto& example_f = stream.value();
|
|
if (example_f.is_open())
|
|
{
|
|
// pick ip
|
|
// don't revert me
|
|
const static std::string ip = "10.33.0.1/16";
|
|
/*
|
|
std::string ip = llarp::findFreePrivateRange();
|
|
if(ip == "")
|
|
{
|
|
llarp::LogError(
|
|
"Couldn't easily detect a private range to map lokinet onto");
|
|
return false;
|
|
}
|
|
*/
|
|
example_f << "# this is an example configuration for a snapp\n";
|
|
example_f << "[example-snapp]\n";
|
|
example_f << "# keyfile is the path to the private key of the snapp, "
|
|
"your .loki is tied to this key, DON'T LOSE IT\n";
|
|
example_f << "keyfile=" << basepath << "example-snap-keyfile.private\n";
|
|
example_f << "# ifaddr is the ip range to allocate to this snapp\n";
|
|
example_f << "ifaddr=" << ip << std::endl;
|
|
// probably fine to leave this (and not-auto-detect it) I'm not worried
|
|
// about any collisions
|
|
example_f << "# ifname is the name to try and give to the network "
|
|
"interface this snap owns\n";
|
|
example_f << "ifname=snapp-tun0\n";
|
|
}
|
|
else
|
|
{
|
|
llarp::LogError("failed to write ", snappExample_fpath);
|
|
}
|
|
}
|
|
// now do up fname
|
|
f << "\n\n";
|
|
f << "# snapps configuration section\n";
|
|
f << "[services]\n";
|
|
f << "# uncomment next line to enable a snapp\n";
|
|
f << "#example-snapp=" << snappExample_fpath << std::endl;
|
|
f << "\n\n";
|
|
|
|
f << "# network settings \n";
|
|
f << "[network]\n";
|
|
f << "profiles=" << basepath << "profiles.dat\n";
|
|
f << "# uncomment next line to add router with pubkey to list of routers we "
|
|
"connect directly to\n";
|
|
f << "#strict-connect=pubkey\n";
|
|
f << "# uncomment next line to use router with pubkey as an exit node\n";
|
|
f << "#exit-node=pubkey\n";
|
|
|
|
// better to set them to auto then to hard code them now
|
|
// operating environment may change over time and this will help adapt
|
|
// f << "ifname=auto\n";
|
|
// f << "ifaddr=auto\n";
|
|
|
|
// should this also be auto? or not declared?
|
|
// probably auto in case they want to set up a hidden service
|
|
f << "enabled=true\n";
|
|
return true;
|
|
}
|