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lokinet/llarp/config.cpp
Rick V dd52f13c7c
turn off text translation on windows 
(std::ios::binary does nothing on unix btw)
2019-02-06 19:53:07 -06:00

394 lines
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C++
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#include <config.h>
#include <config.hpp>
#include <constants/defaults.hpp>
#include <net/net.hpp>
#include <util/fs.hpp>
#include <util/ini.hpp>
#include <util/logger.hpp>
#include <util/mem.hpp>
namespace llarp
{
template < typename Config, typename Section >
Section
find_section(Config &c, const std::string &name, const Section &fallback)
{
Section ret;
if(c.VisitSection(name.c_str(),
[&ret](const ConfigParser::Section_t &s) -> bool {
for(const auto &item : s)
{
ret.emplace_back(item.first, item.second);
}
return true;
}))
return ret;
else
return fallback;
}
bool
Config::Load(const char *fname)
{
ConfigParser parser;
if(!parser.LoadFile(fname))
return false;
router = find_section(parser, "router", section_t{});
network = find_section(parser, "network", section_t{});
connect = find_section(parser, "connect", section_t{});
netdb = find_section(parser, "netdb", section_t{});
dns = find_section(parser, "dns", section_t{});
iwp_links = find_section(parser, "bind", section_t{});
services = find_section(parser, "services", section_t{});
system = find_section(parser, "system", section_t{});
api = find_section(parser, "api", section_t{});
lokid = find_section(parser, "lokid", section_t{});
bootstrap = find_section(parser, "bootstrap", section_t{});
return true;
};
} // namespace llarp
extern "C" bool
llarp_ensure_config(const char *fname, const char *basedir, bool overwrite,
bool asRouter)
{
std::error_code ec;
if(fs::exists(fname, ec) && !overwrite)
{
return true;
}
if(ec)
{
llarp::LogError(ec);
return false;
}
std::string basepath = "";
if(basedir)
{
basepath = basedir;
#ifndef _WIN32
basepath += "/";
#else
basepath += "\\";
#endif
}
llarp::LogInfo("Attempting to create config file ", fname);
// abort if client.ini already exists
if(!asRouter)
{
if(fs::exists(basepath + "client.ini", ec) && !overwrite)
{
llarp::LogError(
basepath, "client.ini currently exists, please use -f to overwrite");
return true;
}
if(ec)
{
llarp::LogError(ec);
return false;
}
}
// write fname ini
std::ofstream f(fname, std::ios::out | std::ios::binary);
if(!f.is_open())
{
llarp::LogError("failed to open ", fname, " for writing");
return false;
}
llarp_generic_ensure_config(f, basepath);
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)
{
f << "# this configuration was auto generated with 'sane' defaults"
<< std::endl;
f << "# change these values as desired" << std::endl;
f << std::endl << std::endl;
f << "[router]" << std::endl;
f << "# number of crypto worker threads " << std::endl;
f << "threads=4" << std::endl;
f << "# path to store signed RC" << std::endl;
f << "contact-file=" << basepath << "self.signed" << std::endl;
f << "# path to store transport private key" << std::endl;
f << "transport-privkey=" << basepath << "transport.private" << std::endl;
f << "# path to store identity signing key" << std::endl;
f << "ident-privkey=" << basepath << "identity.private" << std::endl;
f << "# encryption key for onion routing" << std::endl;
f << "encryption-privkey=" << basepath << "encryption.private" << std::endl;
f << std::endl;
f << "# uncomment following line to set router nickname to 'lokinet'"
<< std::endl;
f << "# nickname=lokinet" << std::endl;
f << std::endl << std::endl;
f << "# admin api (disabled by default)" << std::endl;
f << "[api]" << std::endl;
f << "enabled=false" << std::endl;
f << "# authkey=insertpubkey1here" << std::endl;
f << "# authkey=insertpubkey2here" << std::endl;
f << "# authkey=insertpubkey3here" << std::endl;
f << "bind=127.0.0.1:1190" << std::endl;
f << std::endl << std::endl;
f << "# system settings for privileges and such" << std::endl;
f << "[system]" << std::endl;
#ifdef _WIN32
f << "# ";
#endif
f << "user=" << DEFAULT_LOKINET_USER << std::endl;
#ifdef _WIN32
f << "# ";
#endif
f << "group=" << DEFAULT_LOKINET_GROUP << std::endl;
f << "pidfile=" << basepath << "lokinet.pid" << std::endl;
f << std::endl << std::endl;
f << "# dns provider configuration section" << std::endl;
f << "[dns]" << std::endl;
f << "# resolver" << std::endl;
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" << std::endl;
#else
f << "bind=127.3.2.1:53" << std::endl;
#endif
#else
f << "bind=127.0.0.1:53" << std::endl;
#endif
f << std::endl << std::endl;
f << "# network database settings block " << std::endl;
f << "[netdb]" << std::endl;
f << "# directory for network database skiplist storage" << std::endl;
f << "dir=" << basepath << "netdb" << std::endl;
f << std::endl << std::endl;
f << "# bootstrap settings" << std::endl;
f << "[bootstrap]" << std::endl;
f << "# add a bootstrap node's signed identity to the list of nodes we want "
"to bootstrap from"
<< std::endl;
f << "# if we don't have any peers we connect to this router" << std::endl;
f << "add-node=" << basepath << "bootstrap.signed" << std::endl;
f << "# add another bootstrap node" << std::endl;
f << "#add-node=/path/to/alternative/self.signed" << std::endl;
f << std::endl << std::endl;
}
void
llarp_ensure_router_config(std::ofstream &f, std::string basepath)
{
f << "# lokid settings (disabled by default)" << std::endl;
f << "[lokid]" << std::endl;
f << "enabled=false" << std::endl;
f << "jsonrpc=127.0.0.1:22023" << std::endl;
f << "#service-node-seed=/path/to/servicenode/seed" << std::endl;
f << std::endl;
f << "# network settings " << std::endl;
f << "[network]" << std::endl;
f << "profiles=" << basepath << "profiles.dat" << std::endl;
f << "ifaddr=10.105.0.1/16" << std::endl;
f << "ifname=lokitun0" << std::endl;
f << "enabled=true" << std::endl;
f << "exit=false" << std::endl;
f << "# exit-blacklist=tcp:25" << std::endl;
f << "# exit-whitelist=tcp:*" << std::endl;
f << "# exit-whitelist=udp:*" << std::endl;
f << std::endl;
f << "# ROUTERS ONLY: publish network interfaces for handling inbound traffic"
<< std::endl;
f << "[bind]" << std::endl;
// get ifname
std::string ifname;
if(llarp::GetBestNetIF(ifname, AF_INET))
f << ifname << "=1090" << std::endl;
else
f << "# could not autodetect network interface" << std::endl
<< "# eth0=1090" << std::endl;
f << std::endl;
}
bool
llarp_ensure_client_config(std::ofstream &f, std::string basepath)
{
const std::string snappExample_fpath = basepath + "snapp-example.ini";
// done with fname.ini
// start client.ini
// write fname ini
{
std::ofstream clientini_f(snappExample_fpath,
std::ios::binary | std::ios::out);
if(f.is_open())
{
clientini_f << "# this is an example configuration for a snapp";
clientini_f << "[example-snapp]" << std::endl;
clientini_f << "# keyfile is the path to the private key of the snapp"
<< std::endl;
clientini_f << "keyfile=" << basepath << "example-snap-keyfile.private"
<< std::endl;
clientini_f << "# ifaddr is the ip range to allocate to this snapp"
<< std::endl;
clientini_f << "ifaddr=10.55.0.0/16" << std::endl;
clientini_f << "# ifname is the name to try and give to the network "
"interface this snap owns"
<< std::endl;
clientini_f << "ifname=snapp-tun0" << std::endl;
}
else
{
llarp::LogError("failed to write ", snappExample_fpath);
}
}
f << std::endl << std::endl;
f << "# snapps configuration section" << std::endl;
f << "[services]";
f << "# uncomment next line to enable persistant snapp" << std::endl;
f << "#example-snapp=" << snappExample_fpath << std::endl;
f << std::endl << std::endl;
f << "# network settings " << std::endl;
f << "[network]" << std::endl;
f << "profiles=" << basepath << "profiles.dat" << std::endl;
f << "# uncomment next line to add router with pubkey to list of routers we "
"connect directly to"
<< std::endl;
f << "#strict-connect=pubkey" << std::endl;
f << "# uncomment next line to use router with pubkey as an exit node"
<< std::endl;
f << "#exit-node=pubkey" << std::endl;
// pick ip
std::string ip = llarp::findFreePrivateRange();
/*
struct privatesInUse ifsInUse = llarp_getPrivateIfs();
std::string ip = "";
if(!ifsInUse.ten)
{
ip = "10.10.0.1/24";
}
else if(!ifsInUse.oneSeven)
{
ip = "172.16.10.1/24";
}
else if(!ifsInUse.oneNine)
{
ip = "192.168.10.1/24";
}
else
{
llarp::LogError(
"Couldn't easily detect a private range to map lokinet onto");
return false;
}
*/
if(ip == "")
{
llarp::LogError(
"Couldn't easily detect a private range to map lokinet onto");
return false;
}
llarp::LogDebug("Detected " + ip
+ " is available for use, configuring as such");
// clientini_f << "ifaddr=" << ip << std::endl;
// pick interface name
std::string ifName = llarp::findFreeLokiTunIfName();
if(ifName == "")
{
llarp::LogError("Could not find any free lokitun interface names");
return false;
}
/*
clientini_f << "ifname=lokinum" << std::to_string(num) << std::endl;
// prefetch-tags=test
// enable netns?
llarp::LogInfo("Generated hidden service client as " + basepath
+ "client.ini");
*/
f << "ifname=" << ifName << std::endl;
f << "ifaddr=" << ip << std::endl;
f << "enabled=true" << std::endl;
return true;
}
extern "C"
{
void
llarp_new_config(struct llarp_config **conf)
{
llarp_config *c = new llarp_config();
*conf = c;
}
void
llarp_free_config(struct llarp_config **conf)
{
if(*conf)
delete *conf;
*conf = nullptr;
}
int
llarp_load_config(struct llarp_config *conf, const char *fname)
{
if(!conf->impl.Load(fname))
return -1;
return 0;
}
void
llarp_config_iter(struct llarp_config *conf,
struct llarp_config_iterator *iter)
{
iter->conf = conf;
std::unordered_map< std::string, const llarp::Config::section_t & >
sections = {{"network", conf->impl.network},
{"connect", conf->impl.connect},
{"bootstrap", conf->impl.bootstrap},
{"system", conf->impl.system},
{"netdb", conf->impl.netdb},
{"api", conf->impl.api},
{"services", conf->impl.services}};
for(const auto &item : conf->impl.lokid)
iter->visit(iter, "lokid", item.first.c_str(), item.second.c_str());
for(const auto &item : conf->impl.router)
iter->visit(iter, "router", item.first.c_str(), item.second.c_str());
for(const auto &item : conf->impl.dns)
iter->visit(iter, "dns", item.first.c_str(), item.second.c_str());
for(const auto &item : conf->impl.iwp_links)
iter->visit(iter, "bind", item.first.c_str(), item.second.c_str());
for(const auto &section : sections)
for(const auto &item : section.second)
iter->visit(iter, section.first.c_str(), item.first.c_str(),
item.second.c_str());
}
}
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