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OpenVpnClient.hpp
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OpenVpnClient.hpp
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#ifndef OPENVPN_CLIENT_H
#define OPENVPN_CLIENT_H
#define OPENVPN_EXTERNAL_TUN_FACTORY
#ifdef OPENVPN_REMOTE_OVERRIDE
#include <openvpn/common/process.hpp>
#endif
#include <openvpn/common/platform.hpp>
#ifdef OPENVPN_PLATFORM_MAC
#include <CoreFoundation/CFBundle.h>
#include <ApplicationServices/ApplicationServices.h>
#endif
// If enabled, don't direct ovpn3 core logging to
// OpenVPNClient::log() virtual method.
// Instead, logging will go to LogBaseSimple::log().
// In this case, make sure to define:
// LogBaseSimple log;
// at the top of your main() function to receive
// log messages from all threads.
// Also, note that the OPENVPN_LOG_GLOBAL setting
// MUST be consistent across all compilation units.
#ifdef OPENVPN_USE_LOG_BASE_SIMPLE
#define OPENVPN_LOG_GLOBAL // use global rather than thread-local log object pointer
#include <openvpn/log/logbasesimple.hpp>
#endif
// don't export core symbols
#define OPENVPN_CORE_API_VISIBILITY_HIDDEN
#if defined(USE_MBEDTLS)
#include <openvpn/mbedtls/util/pkcs1.hpp>
#endif
#if defined(OPENVPN_PLATFORM_WIN)
#include <openvpn/win/console.hpp>
#include <shellapi.h>
#endif
#ifdef USE_NETCFG
#include "client/core-client-netcfg.hpp"
#endif
// use SITNL by default
#ifndef OPENVPN_USE_IPROUTE2
#define OPENVPN_USE_SITNL
#endif
//TODO: ????
#include "OpenVPNClientBase.hpp"
#define OPENVPN_CLIENT_EXPORT
#ifndef OPENVPN_LOG
// log thread settings
#define OPENVPN_LOG_CLASS libopenvpn::LogReceiver
#define OPENVPN_LOG_INFO libopenvpn::LogInfo
//TODO: verify this log thing
#include "openvpn/log/logthread.hpp" // should be included early
#endif
// log SSL handshake messages
#define OPENVPN_LOG_SSL(x) OPENVPN_LOG(x)
// on Android and iOS, use TunBuilderBase abstraction
#include <openvpn/common/platform.hpp>
#if (defined(OPENVPN_PLATFORM_ANDROID) || defined(OPENVPN_PLATFORM_IPHONE)) && !defined(OPENVPN_FORCE_TUN_NULL) && !defined(OPENVPN_EXTERNAL_TUN_FACTORY)
//TODO: inspect this
#define USE_TUN_BUILDER
#endif
#include <openvpn/init/initprocess.hpp>
#include <openvpn/common/bigmutex.hpp>
#include <openvpn/common/size.hpp>
#include <openvpn/common/platform_string.hpp>
#include <openvpn/common/count.hpp>
#include <openvpn/asio/asiostop.hpp>
#include <openvpn/time/asiotimer.hpp>
#include <openvpn/time/timestr.hpp>
#include <openvpn/client/cliconnect.hpp>
#include <openvpn/client/cliopthelper.hpp>
#include <openvpn/options/merge.hpp>
#include <openvpn/error/excode.hpp>
#include <openvpn/crypto/selftest.hpp>
#include "MyClientEvents.hpp"
#include "MyClockTick.hpp"
#include "MyRemoveOverride.hpp"
#include "MySessionStats.hpp"
#include "MySocketProtect.hpp"
#include "MyReconnectNotify.hpp"
#include "ClientState.hpp"
#include "VirtualTun.h"
#include "VirtualVPNAsioStream.h"
// copyright
#include <openvpn/legal/copyright.hpp>
#include <openvpn/tun/builder/base.hpp>
#include <openvpn/options/merge.hpp>
namespace libopenvpn
{
using namespace openvpn;
class OpenVPNClient : public OpenVPNClientBase
{
protected:
std::function<void(std::string)> log_f;
std::function<void(const Event&)> event_f;
public:
OpenVPNClient(std::shared_ptr<VAsioStream> vAsioStream, std::string replacementIpv4, std::string replacementIpv6) :
vAsioStream(vAsioStream),
replacementIpv4(replacementIpv4),
replacementIpv6(replacementIpv6)
{
//tun = new VirtualTunSetup::Setup(socketPair);
//= std::make_shared<VirtualTunSetup::Setup::Ptr>(socketPair);
#ifndef OPENVPN_NORESET_TIME
// We keep track of time as binary milliseconds since a time base, and
// this can wrap after ~48 days on 32 bit systems, so it's a good idea
// to periodically reinitialize the base.
Time::reset_base_conditional();
#endif
state = new Private::ClientState();
state->proto_context_options.reset(new ProtoContextOptions());
}
void setLogFunction(std::function<void(std::string)> log_) {
this->log_f = log_;
}
void setOnEvent(std::function<void(const Event)> onEvent_) {
this->event_f = onEvent_;
}
enum ClockTickAction
{
CT_UNDEF,
CT_STOP,
CT_RECONNECT,
CT_PAUSE,
CT_RESUME,
CT_STATS,
};
TunClientFactory *new_tun_factory(const ExternalTun::Config &conf, const OptionList &opt) override
{
//std::cout << "new_tun_factory called" << std::endl;
return new VirtualTun::ClientConfig(conf, opt, this->vAsioStream, this->replacementIpv4, this->replacementIpv6);
}
bool is_dynamic_challenge() const
{
return !dc_cookie.empty();
}
std::string dynamic_challenge_cookie()
{
return dc_cookie;
}
std::string epki_ca;
std::string epki_cert;
#if defined(USE_MBEDTLS)
MbedTLSPKI::PKContext epki_ctx; // external PKI context
#endif
void set_clock_tick_action(const ClockTickAction action)
{
clock_tick_action = action;
}
void print_stats()
{
const int n = stats_n();
std::vector<long long> stats = stats_bundle();
std::stringstream s;
s << "STATS:" << std::endl;
for (int i = 0; i < n; ++i)
{
const long long value = stats[i];
if (value)
s << " " << stats_name(i) << " : " << value;
}
log_f(s.str());
}
#ifdef OPENVPN_REMOTE_OVERRIDE
void set_remote_override_cmd(const std::string &cmd)
{
remote_override_cmd = cmd;
}
#endif
public:
std::shared_ptr<libopenvpn::VAsioStream> vAsioStream;
std::string replacementIpv4;
std::string replacementIpv6;
virtual void event(const Event &ev) override
{
if (this->event_f) {
event_f(ev);
}
std::stringstream s;
s << date_time() << " EVENT: " << ev.name;
if (!ev.info.empty())
s << ' ' << ev.info;
if (ev.fatal)
s << " [FATAL-ERR]";
else if (ev.error)
s << " [ERR]";
//s << std::endl;
if (ev.name == "DYNAMIC_CHALLENGE")
{
dc_cookie = ev.info;
DynamicChallenge dc;
if (parse_dynamic_challenge(ev.info, dc))
{
s << std::endl;
s << "DYNAMIC CHALLENGE" << std::endl;
s << "challenge: " << dc.challenge << std::endl;
s << "echo: " << dc.echo << std::endl;
s << "responseRequired: " << dc.responseRequired << std::endl;
s << "stateID: " << dc.stateID;
}
}
else if (ev.name == "INFO" && (string::starts_with(ev.info, "OPEN_URL:http://") || string::starts_with(ev.info, "OPEN_URL:https://")))
{
// launch URL
const std::string url_str = ev.info.substr(9);
#ifdef OPENVPN_PLATFORM_MAC
std::thread thr([url_str]() {
CFURLRef url = CFURLCreateWithBytes(
NULL, // allocator
(UInt8 *)url_str.c_str(), // URLBytes
url_str.length(), // length
kCFStringEncodingUTF8, // encoding
NULL // baseURL
);
LSOpenCFURLRef(url, 0);
CFRelease(url);
});
thr.detach();
#else
s << "No implementation to launch " << url_str;
#endif
}
log_f(s.str());
}
virtual void log(const LogInfo &log) override
{
std::lock_guard<std::mutex> lock(log_mutex);
std::stringstream s;
s << date_time() << ' ' << log.text << std::flush;
log_f(s.str());
}
virtual void clock_tick() override
{
const ClockTickAction action = clock_tick_action;
clock_tick_action = CT_UNDEF;
std::stringstream s;
switch (action)
{
case CT_STOP:
s << "signal: CT_STOP";
log_f(s.str());
stop();
break;
case CT_RECONNECT:
s << "signal: CT_RECONNECT";
log_f(s.str());
reconnect(0);
break;
case CT_PAUSE:
s << "signal: CT_PAUSE";
log_f(s.str());
pause("clock-tick pause");
break;
case CT_RESUME:
s << "signal: CT_RESUME";
log_f(s.str());
resume();
break;
case CT_STATS:
s << "signal: CT_STATS";
log_f(s.str());
print_stats();
break;
default:
break;
}
}
virtual void external_pki_cert_request(ExternalPKICertRequest &certreq) override
{
if (!epki_cert.empty())
{
certreq.cert = epki_cert;
certreq.supportingChain = epki_ca;
}
else
{
certreq.error = true;
certreq.errorText = "external_pki_cert_request not implemented";
}
}
virtual void external_pki_sign_request(ExternalPKISignRequest &signreq) override
{
#if defined(USE_MBEDTLS)
if (epki_ctx.defined())
{
try
{
// decode base64 sign request
BufferAllocated signdata(256, BufferAllocated::GROW);
base64->decode(signdata, signreq.data);
// get MD alg
const mbedtls_md_type_t md_alg = PKCS1::DigestPrefix::MbedTLSParse().alg_from_prefix(signdata);
// log info
OPENVPN_LOG("SIGN[" << PKCS1::DigestPrefix::MbedTLSParse::to_string(md_alg) << ',' << signdata.size() << "]: " << render_hex_generic(signdata));
// allocate buffer for signature
BufferAllocated sig(mbedtls_pk_get_len(epki_ctx.get()), BufferAllocated::ARRAY);
// sign it
size_t sig_size = 0;
const int status = mbedtls_pk_sign(epki_ctx.get(),
md_alg,
signdata.c_data(),
signdata.size(),
sig.data(),
&sig_size,
rng_callback,
this);
if (status != 0)
throw Exception("mbedtls_pk_sign failed, err=" + openvpn::to_string(status));
if (sig.size() != sig_size)
throw Exception("unexpected signature size");
// encode base64 signature
signreq.sig = base64->encode(sig);
OPENVPN_LOG("SIGNATURE[" << sig_size << "]: " << signreq.sig);
}
catch (const std::exception &e)
{
signreq.error = true;
signreq.errorText = std::string("external_pki_sign_request: ") + e.what();
}
}
else
#endif
{
signreq.error = true;
signreq.errorText = "external_pki_sign_request not implemented";
}
}
/*
//DO NOT DELETE! Used by MBED_TLS
//TODO: make orwellOpenVPNClient trapped in here as a closure
// RNG callback
static int rng_callback(void *arg, unsigned char *data, size_t len)
{
Client *self = (Client *)arg;
if (!self->rng)
{
self->rng.reset(new SSLLib::RandomAPI(false));
self->rng->assert_crypto();
}
return self->rng->rand_bytes_noexcept(data, len) ? 0 : -1; // using -1 as a general-purpose mbed TLS error code
}
*/
virtual bool pause_on_connection_timeout() override
{
return false;
}
#ifdef OPENVPN_REMOTE_OVERRIDE
virtual bool remote_override_enabled() override
{
return !remote_override_cmd.empty();
}
virtual void remote_override(RemoteOverride &ro)
{
RedirectPipe::InOut pio;
Argv argv;
argv.emplace_back(remote_override_cmd);
OPENVPN_LOG(argv.to_string());
const int status = system_cmd(remote_override_cmd,
argv,
nullptr,
pio,
RedirectPipe::IGNORE_ERR);
if (!status)
{
const std::string out = string::first_line(pio.out);
OPENVPN_LOG("REMOTE OVERRIDE: " << out);
auto svec = string::split(out, ',');
if (svec.size() == 4)
{
ro.host = svec[0];
ro.ip = svec[1];
ro.port = svec[2];
ro.proto = svec[3];
}
else
ro.error = "cannot parse remote-override, expecting host,ip,port,proto (at least one or both of host and ip must be defined)";
}
else
ro.error = "status=" + std::to_string(status);
}
#endif
std::mutex log_mutex;
std::string dc_cookie;
RandomAPI::Ptr rng; // random data source for epki
volatile ClockTickAction clock_tick_action = CT_UNDEF;
#ifdef OPENVPN_REMOTE_OVERRIDE
std::string remote_override_cmd;
#endif
bool tun_builder_new() override
{
tbc.tun_builder_set_mtu(1500);
return true;
}
int tun_builder_establish() override
{
std::stringstream s;
s << "tun builder establish called";
log_f(s.str());
return 0;
/*
if (!tun)
{
tun.reset(new VirtualTunSetup::Setup());
}
VirtualTunSetup::Setup::Config config;
config.layer = Layer(Layer::Type::OSI_LAYER_3);
// no need to add bypass routes on establish since we do it on socket_protect
config.add_bypass_routes_on_establish = false;
return tun->establish(tbc, &config, nullptr, std::cout);
*/
}
bool tun_builder_add_address(const std::string &address,
int prefix_length,
const std::string &gateway, // optional
bool ipv6,
bool net30) override
{
return tbc.tun_builder_add_address(address, prefix_length, gateway, ipv6, net30);
}
bool tun_builder_add_route(const std::string &address,
int prefix_length,
int metric,
bool ipv6) override
{
return tbc.tun_builder_add_route(address, prefix_length, metric, ipv6);
}
bool tun_builder_reroute_gw(bool ipv4,
bool ipv6,
unsigned int flags) override
{
return tbc.tun_builder_reroute_gw(ipv4, ipv6, flags);
}
bool tun_builder_set_remote_address(const std::string &address,
bool ipv6) override
{
return tbc.tun_builder_set_remote_address(address, ipv6);
}
bool tun_builder_set_session_name(const std::string &name) override
{
return tbc.tun_builder_set_session_name(name);
}
bool tun_builder_add_dns_server(const std::string &address, bool ipv6) override
{
return tbc.tun_builder_add_dns_server(address, ipv6);
}
void tun_builder_teardown(bool disconnect) override
{
/*
std::ostringstream os;
auto os_print = Cleanup([&os]() { OPENVPN_LOG_STRING(os.str()); });
tun->destroy(os);
*/
}
/*
Looks like this is just a way to init only one time
these libraries:
Time::reset_base();
CompressContext::init_static();
init_openssl("auto");
base64_init_static();
It only inits them one time
*/
static OPENVPN_CLIENT_EXPORT void init_process()
{
InitProcess::Init();
}
static OPENVPN_CLIENT_EXPORT void uninit_process()
{
//TODO: WHAT GOES HERE?
//InitProcess::Uninit();
}
OPENVPN_CLIENT_EXPORT OpenVPNClient()
{
std::stringstream s;
s << "OpenVPNClient constructor CALLED";
log_f(s.str());
#ifndef OPENVPN_NORESET_TIME
// We keep track of time as binary milliseconds since a time base, and
// this can wrap after ~48 days on 32 bit systems, so it's a good idea
// to periodically reinitialize the base.
Time::reset_base_conditional();
#endif
state = new Private::ClientState();
state->proto_context_options.reset(new ProtoContextOptions());
}
static OPENVPN_CLIENT_EXPORT void parse_config(const Config &config, EvalConfig &eval, openvpn::OptionList &options)
{
try
{
// validate proto_override
if (!config.protoOverride.empty())
Protocol::parse(config.protoOverride, Protocol::NO_SUFFIX);
// validate IPv6 setting
//if (!config.ipv6.empty())
// IPv6Setting::parse(config.ipv6);
// parse config
OptionList::KeyValueList kvl;
kvl.reserve(config.contentList.size());
for (size_t i = 0; i < config.contentList.size(); ++i)
{
const KeyValue &kv = config.contentList[i];
kvl.push_back(new OptionList::KeyValue(kv.key, kv.value));
}
const ParseClientConfig cc = ParseClientConfig::parse(config.content, &kvl, options);
#ifdef OPENVPN_DUMP_CONFIG
std::stringstream s;
s << "---------- ARGS ----------" << std::endl;
s << options.render(Option::RENDER_PASS_FMT | Option::RENDER_NUMBER | Option::RENDER_BRACKET) << std::endl;
s << "---------- MAP ----------" << std::endl;
s << options.render_map();
log_f(s.str());
#endif
eval.error = cc.error();
eval.message = cc.message();
eval.userlockedUsername = cc.userlockedUsername();
eval.profileName = cc.profileName();
eval.friendlyName = cc.friendlyName();
eval.autologin = cc.autologin();
eval.externalPki = cc.externalPki();
eval.staticChallenge = cc.staticChallenge();
eval.staticChallengeEcho = cc.staticChallengeEcho();
eval.privateKeyPasswordRequired = cc.privateKeyPasswordRequired();
eval.allowPasswordSave = cc.allowPasswordSave();
eval.remoteHost = config.serverOverride.empty() ? cc.firstRemoteListItem().host : config.serverOverride;
eval.remotePort = cc.firstRemoteListItem().port;
eval.remoteProto = cc.firstRemoteListItem().proto;
for (ParseClientConfig::ServerList::const_iterator i = cc.serverList().begin(); i != cc.serverList().end(); ++i)
{
ServerEntry se;
se.server = i->server;
se.friendlyName = i->friendlyName;
eval.serverList.push_back(se);
}
}
catch (const std::exception &e)
{
eval.error = true;
eval.message = Unicode::utf8_printable<std::string>(std::string("ERR_PROFILE_GENERIC: ") + e.what(), 256);
}
}
OPENVPN_CLIENT_EXPORT void parse_extras(const Config &config, EvalConfig &eval)
{
try
{
state->server_override = config.serverOverride;
state->port_override = config.portOverride;
state->conn_timeout = config.connTimeout;
state->tun_persist = config.tunPersist;
state->wintun = config.wintun;
state->google_dns_fallback = config.googleDnsFallback;
state->synchronous_dns_lookup = config.synchronousDnsLookup;
state->autologin_sessions = config.autologinSessions;
state->retry_on_auth_failed = config.retryOnAuthFailed;
state->private_key_password = config.privateKeyPassword;
if (!config.protoOverride.empty())
state->proto_override = Protocol::parse(config.protoOverride, Protocol::NO_SUFFIX);
//if (!config.ipv6.empty())
// state->ipv6 = IPv6Setting::parse(config.ipv6);
if (!config.compressionMode.empty())
state->proto_context_options->parse_compression_mode(config.compressionMode);
if (eval.externalPki)
state->external_pki_alias = config.externalPkiAlias;
state->disable_client_cert = config.disableClientCert;
state->ssl_debug_level = config.sslDebugLevel;
state->default_key_direction = config.defaultKeyDirection;
state->force_aes_cbc_ciphersuites = config.forceAesCbcCiphersuites;
state->tls_version_min_override = config.tlsVersionMinOverride;
state->tls_cert_profile_override = config.tlsCertProfileOverride;
state->allow_local_lan_access = config.allowLocalLanAccess;
state->gui_version = config.guiVersion;
state->sso_methods = config.ssoMethods;
state->platform_version = config.platformVersion;
state->hw_addr_override = config.hwAddrOverride;
state->alt_proxy = config.altProxy;
state->dco = config.dco;
state->echo = config.echo;
state->info = config.info;
state->clock_tick_ms = config.clockTickMS;
if (!config.gremlinConfig.empty())
{
#ifdef OPENVPN_GREMLIN
state->gremlin_config.reset(new Gremlin::Config(config.gremlinConfig));
#else
log_f("client not built with OPENVPN_GREMLIN");
throw Exception("client not built with OPENVPN_GREMLIN");
#endif
}
state->extra_peer_info = PeerInfo::Set::new_from_foreign_set(config.peerInfo);
if (!config.proxyHost.empty())
{
HTTPProxyTransport::Options::Ptr ho(new HTTPProxyTransport::Options());
ho->set_proxy_server(config.proxyHost, config.proxyPort);
ho->username = config.proxyUsername;
ho->password = config.proxyPassword;
ho->allow_cleartext_auth = config.proxyAllowCleartextAuth;
state->http_proxy_options = ho;
}
}
catch (const std::exception &e)
{
eval.error = true;
eval.message = Unicode::utf8_printable<std::string>(e.what(), 256);
}
}
OPENVPN_CLIENT_EXPORT long max_profile_size()
{
return ProfileParseLimits::MAX_PROFILE_SIZE;
}
OPENVPN_CLIENT_EXPORT MergeConfig merge_config_static(const std::string &path,
bool follow_references)
{
ProfileMerge pm(path, "ovpn", "", follow_references ? ProfileMerge::FOLLOW_PARTIAL : ProfileMerge::FOLLOW_NONE,
ProfileParseLimits::MAX_LINE_SIZE, ProfileParseLimits::MAX_PROFILE_SIZE);
return build_merge_config(pm);
}
OPENVPN_CLIENT_EXPORT MergeConfig merge_config_string_static(const std::string &config_content)
{
ProfileMergeFromString pm(config_content, "", ProfileMerge::FOLLOW_NONE,
ProfileParseLimits::MAX_LINE_SIZE, ProfileParseLimits::MAX_PROFILE_SIZE);
return build_merge_config(pm);
}
OPENVPN_CLIENT_EXPORT MergeConfig build_merge_config(const ProfileMerge &pm)
{
MergeConfig ret;
ret.status = pm.status_string();
ret.basename = pm.basename();
if (pm.status() == ProfileMerge::MERGE_SUCCESS)
{
ret.refPathList = pm.ref_path_list();
ret.profileContent = pm.profile_content();
}
else
{
ret.errorText = pm.error();
}
return ret;
}
static OPENVPN_CLIENT_EXPORT EvalConfig eval_config_static(const Config &config)
{
EvalConfig eval;
OptionList options;
parse_config(config, eval, options);
return eval;
}
// API client submits the configuration here before calling connect()
OPENVPN_CLIENT_EXPORT EvalConfig eval_config(const Config &config)
{
// parse and validate configuration file
EvalConfig eval;
parse_config(config, eval, state->options);
if (eval.error)
return eval;
// handle extra settings in config
parse_extras(config, eval);
state->eval = eval;
return eval;
}
OPENVPN_CLIENT_EXPORT Status provide_creds(const ProvideCreds &creds)
{
Status ret;
try
{
ClientCreds::Ptr cc = new ClientCreds();
cc->set_username(creds.username);
cc->set_password(creds.password);
cc->set_response(creds.response);
cc->set_dynamic_challenge_cookie(creds.dynamicChallengeCookie, creds.username);
cc->set_replace_password_with_session_id(creds.replacePasswordWithSessionID);
cc->enable_password_cache(creds.cachePassword);
state->creds = cc;
}
catch (const std::exception &e)
{
ret.error = true;
ret.message = Unicode::utf8_printable<std::string>(e.what(), 256);
}
return ret;
}
OPENVPN_CLIENT_EXPORT bool socket_protect(int socket, std::string remote, bool ipv6) override
{
return true;
}
OPENVPN_CLIENT_EXPORT bool parse_dynamic_challenge(const std::string &cookie, DynamicChallenge &dc)
{
try
{
ChallengeResponse cr(cookie);
dc.challenge = cr.get_challenge_text();
dc.echo = cr.get_echo();
dc.responseRequired = cr.get_response_required();
dc.stateID = cr.get_state_id();
return true;
}
catch (const std::exception &)
{
return false;
}
}
OPENVPN_CLIENT_EXPORT void process_epki_cert_chain(const ExternalPKICertRequest &req)
{
// Get cert and add to options list
if (!req.cert.empty())
{
Option o;
o.push_back("cert");
o.push_back(req.cert);
state->options.add_item(o);
}
// Get the supporting chain, if it exists, and use
// it for ca (if ca isn't defined), or otherwise use
// it for extra-certs (if ca is defined but extra-certs
// is not).
if (!req.supportingChain.empty())
{
if (!state->options.exists("ca"))
{
Option o;
o.push_back("ca");
o.push_back(req.supportingChain);
state->options.add_item(o);
}
else if (!state->options.exists("extra-certs"))
{
Option o;
o.push_back("extra-certs");
o.push_back(req.supportingChain);
state->options.add_item(o);
}
}
}
OPENVPN_CLIENT_EXPORT Status connect()
{
#if !defined(OPENVPN_OVPNCLI_SINGLE_THREAD)
openvpn_io::detail::signal_blocker signal_blocker; // signals should be handled by parent thread
#endif
#if defined(OPENVPN_LOG_LOGTHREAD_H) && !defined(OPENVPN_LOG_LOGBASE_H)
#ifdef OPENVPN_LOG_GLOBAL
#error ovpn3 core logging object only supports thread-local scope
#endif
Log::Context log_context(this);
#endif
OPENVPN_LOG(platform());
return do_connect();
}
OPENVPN_CLIENT_EXPORT Status do_connect()
{
Status status;
bool session_started = false;
try
{
connect_attach();
#if defined(OPENVPN_OVPNCLI_ASYNC_SETUP)
openvpn_io::post(*state->io_context(), [this]() {
do_connect_async();
});
#else
connect_setup(status, session_started);
#endif
connect_run();
std::stringstream s;
s << "OpenVPN connection probably ENDED safely";
log_f(s.str());
return status;
}
catch (const std::exception &e)
{
if (session_started)
connect_session_stop();
return status_from_exception(e);
}
}
OPENVPN_CLIENT_EXPORT void do_connect_async()
{
enum StopType
{
NONE,
SESSION,
EXPLICIT,
};
StopType stop_type = NONE;
Status status;
bool session_started = false;
try
{
connect_setup(status, session_started);
}
catch (const std::exception &e)
{
stop_type = session_started ? SESSION : EXPLICIT;
status = status_from_exception(e);
}
if (status.error)
{
ClientEvent::Base::Ptr ev = new ClientEvent::ClientSetup(status.status, status.message);
state->events->add_event(std::move(ev));
}
if (stop_type == SESSION)
connect_session_stop();
#ifdef OPENVPN_IO_REQUIRES_STOP
if (stop_type == EXPLICIT)
state->io_context()->stop();
#endif
}
OPENVPN_CLIENT_EXPORT void connect_setup(Status &status, bool &session_started)
{
//std::cout << "connect_setup!" << std::endl;
// set global MbedTLS debug level
#if defined(USE_MBEDTLS) || defined(USE_MBEDTLS_APPLE_HYBRID)
mbedtls_debug_set_threshold(state->ssl_debug_level); // fixme -- using a global method for this seems wrong
#endif
// load options
ClientOptions::Config cc;
cc.cli_stats = state->stats;
cc.cli_events = state->events;
cc.server_override = state->server_override;
cc.port_override = state->port_override;
cc.proto_override = state->proto_override;
//cc.ipv6 = state->ipv6;
cc.conn_timeout = state->conn_timeout;
cc.tun_persist = state->tun_persist;
//cc.wintun = state->wintun;
cc.google_dns_fallback = state->google_dns_fallback;
cc.synchronous_dns_lookup = state->synchronous_dns_lookup;
cc.autologin_sessions = state->autologin_sessions;
cc.retry_on_auth_failed = state->retry_on_auth_failed;
cc.proto_context_options = state->proto_context_options;
cc.http_proxy_options = state->http_proxy_options;
cc.alt_proxy = state->alt_proxy;
cc.dco = state->dco;
cc.echo = state->echo;
cc.info = state->info;
cc.reconnect_notify = &state->reconnect_notify;
if (remote_override_enabled())
cc.remote_override = &state->remote_override;
cc.private_key_password = state->private_key_password;
cc.disable_client_cert = state->disable_client_cert;
cc.ssl_debug_level = state->ssl_debug_level;
cc.default_key_direction = state->default_key_direction;
//TODO:???
//cc.force_aes_cbc_ciphersuites = state->force_aes_cbc_ciphersuites;
cc.tls_version_min_override = state->tls_version_min_override;
cc.tls_cert_profile_override = state->tls_cert_profile_override;
cc.gui_version = state->gui_version;
//cc.sso_methods = state->sso_methods;
//cc.hw_addr_override = state->hw_addr_override;
//cc.platform_version = state->platform_version;
cc.extra_peer_info = state->extra_peer_info;
cc.stop = state->async_stop_local();
cc.allow_local_lan_access = state->allow_local_lan_access;
#ifdef OPENVPN_GREMLIN
cc.gremlin_config = state->gremlin_config;
#endif
cc.socket_protect = &state->socket_protect;
#if defined(USE_TUN_BUILDER)
cc.builder = this;
#endif
#if defined(OPENVPN_EXTERNAL_TUN_FACTORY)
cc.extern_tun_factory = this;
#endif
#if defined(OPENVPN_EXTERNAL_TRANSPORT_FACTORY)
cc.extern_transport_factory = this;
#endif
// force Session ID use and disable password cache if static challenge is enabled
if (state->creds && !state->creds->get_replace_password_with_session_id() && !state->eval.autologin && !state->eval.staticChallenge.empty())
{
state->creds->set_replace_password_with_session_id(true);
state->creds->enable_password_cache(false);
}
//std::cout << "gonna check state->eval.externalPki" << std::endl;
//std::cout << "state->eval.externalPki: " << state->eval.externalPki << std::endl;
//std::cout << "!state->disable_client_cert" << !state->disable_client_cert << std::endl;
// external PKI
#if !defined(USE_APPLE_SSL)
if (state->eval.externalPki && !state->disable_client_cert)
{
std::stringstream s;
s << "external_pki_alias?" << std::endl;
if (!state->external_pki_alias.empty())
{
s << "external_pki_alias NOT empty";
ExternalPKICertRequest req;
req.alias = state->external_pki_alias;
external_pki_cert_request(req);
if (!req.error)
{
cc.external_pki = this;
s<< std::endl;
s << "gonna process_epki_cert_chain";
process_epki_cert_chain(req);
}
else
{
s<< std::endl;
s << "external_pki_error";
external_pki_error(req, Error::EPKI_CERT_ERROR);
log_f(s.str());
return;
}
log_f(s.str());
}
else
{
status.error = true;
status.message = "Missing External PKI alias";
log_f(s.str());
return;
}
}
#endif
#ifdef USE_OPENSSL
if (state->options.exists("allow-name-constraints"))
{
ClientEvent::Base::Ptr ev = new ClientEvent::UnsupportedFeature("allow-name-constraints",
"Always verified correctly with OpenSSL", false);
state->events->add_event(std::move(ev));
}
#endif
for (std::vector<Option>::iterator it = state->options.begin(); it != state->options.end(); ++it)
{
//std::cout << "option" << std::endl;
//it->doSomething();
}
//std::cout << state->options << std::endl;
// build client options object