476 lines
17 KiB
Text
476 lines
17 KiB
Text
#include "ios_controller.h"
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#include <QDebug>
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#include <QFile>
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#include <QJsonArray>
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#include <QJsonDocument>
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#include <QJsonObject>
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#include <QThread>
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#include "../protocols/vpnprotocol.h"
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#import "ios_controller_wrapper.h"
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#import <NetworkExtension/NetworkExtension.h>
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#import <NetworkExtension/NETunnelProviderManager.h>
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#import <NetworkExtension/NEVPNManager.h>
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#import <NetworkExtension/NETunnelProviderSession.h>
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const char* Action::start = "start";
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const char* Action::restart = "restart";
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const char* Action::stop = "stop";
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const char* Action::getTunnelId = "getTunnelId";
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const char* Action::getStatus = "status";
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const char* MessageKey::action = "action";
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const char* MessageKey::tunnelId = "tunnelId";
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const char* MessageKey::config = "config";
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const char* MessageKey::errorCode = "errorCode";
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const char* MessageKey::host = "host";
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const char* MessageKey::port = "port";
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const char* MessageKey::isOnDemand = "is-on-demand";
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Vpn::ConnectionState iosStatusToState(NEVPNStatus status) {
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switch (status) {
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case NEVPNStatusInvalid:
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return Vpn::ConnectionState::Unknown;
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case NEVPNStatusDisconnected:
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return Vpn::ConnectionState::Disconnected;
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case NEVPNStatusConnecting:
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return Vpn::ConnectionState::Connecting;
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case NEVPNStatusConnected:
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return Vpn::ConnectionState::Connected;
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case NEVPNStatusReasserting:
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return Vpn::ConnectionState::Connecting;
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case NEVPNStatusDisconnecting:
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return Vpn::ConnectionState::Disconnecting;
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default:
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return Vpn::ConnectionState::Unknown;
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}
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}
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namespace {
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IosController* s_instance = nullptr;
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}
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IosController::IosController() : QObject()
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{
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qDebug() << "IosController::IosController() init";
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s_instance = this;
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m_iosControllerWrapper = [[IosControllerWrapper alloc] initWithCppController:this];
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[[NSNotificationCenter defaultCenter]
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removeObserver: (__bridge NSObject *)m_iosControllerWrapper];
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[[NSNotificationCenter defaultCenter]
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addObserver: (__bridge NSObject *)m_iosControllerWrapper selector:@selector(vpnStatusDidChange:) name:NEVPNStatusDidChangeNotification object:nil];
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[[NSNotificationCenter defaultCenter]
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addObserver: (__bridge NSObject *)m_iosControllerWrapper selector:@selector(vpnConfigurationDidChange:) name:NEVPNConfigurationChangeNotification object:nil];
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}
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IosController* IosController::Instance() {
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if (!s_instance) {
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s_instance = new IosController();
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}
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return s_instance;
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}
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bool IosController::initialize()
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{
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qDebug() << "IosController::initialize";
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__block bool ok = true;
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[NETunnelProviderManager loadAllFromPreferencesWithCompletionHandler:^(NSArray<NETunnelProviderManager *> * _Nullable managers, NSError * _Nullable error) {
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@try {
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if (error) {
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qDebug() << "IosController::initialize : Error:" << [error.localizedDescription UTF8String];
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emit connectionStateChanged(Vpn::ConnectionState::Error);
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ok = false;
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return;
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}
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NSInteger managerCount = managers.count;
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qDebug() << "IosController::initialize : We have received managers:" << (long)managerCount;
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for (NETunnelProviderManager *manager in managers) {
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if (manager.connection.status == NEVPNStatusConnected) {
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m_currentTunnel = manager;
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qDebug() << "IosController::initialize : VPN already connected";
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emit connectionStateChanged(Vpn::ConnectionState::Connected);
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break;
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// TODO: show connected state
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}
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}
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}
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@catch (NSException *exception) {
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qDebug() << "IosController::setTunnel : exception" << QString::fromNSString(exception.reason);
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ok = false;
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}
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}];
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return ok;
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}
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bool IosController::connectVpn(amnezia::Proto proto, const QJsonObject& configuration)
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{
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qDebug() << "IosController::connectVpn called from thread:" << QThread::currentThread();
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m_proto = proto;
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m_rawConfig = configuration;
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m_serverAddress = configuration.value(config_key::hostName).toString().toNSString();
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QString tunnelName;
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if (configuration.value(config_key::description).toString().isEmpty()) {
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tunnelName = QString("%1 %2")
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.arg(configuration.value(config_key::hostName).toString())
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.arg(ProtocolProps::protoToString(proto));
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}
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else {
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tunnelName = QString("%1 (%2) %3")
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.arg(configuration.value(config_key::description).toString())
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.arg(configuration.value(config_key::hostName).toString())
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.arg(ProtocolProps::protoToString(proto));
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}
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qDebug() << "IosController::connectVpn" << tunnelName;
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// reset m_currentTunnel
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m_currentTunnel = nullptr;
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dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
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__block bool ok = true;
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__block bool isNewTunnelCreated = false;
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[NETunnelProviderManager loadAllFromPreferencesWithCompletionHandler:^(NSArray<NETunnelProviderManager *> * _Nullable managers, NSError * _Nullable error) {
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@try {
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if (error) {
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qDebug() << "IosController::connectVpn : Error:" << [error.localizedDescription UTF8String];
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emit connectionStateChanged(Vpn::ConnectionState::Error);
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ok = false;
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return;
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}
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NSInteger managerCount = managers.count;
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qDebug() << "IosController::connectVpn : We have received managers:" << (long)managerCount;
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for (NETunnelProviderManager *manager in managers) {
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if ([manager.localizedDescription isEqualToString:tunnelName.toNSString()]) {
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m_currentTunnel = manager;
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qDebug() << "IosController::connectVpn : Using existing tunnel";
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if (manager.connection.status == NEVPNStatusConnected) {
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emit connectionStateChanged(Vpn::ConnectionState::Connected);
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return;
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}
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break;
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}
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}
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if (!m_currentTunnel) {
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qDebug() << "IosController::connectVpn : Creating new tunnel";
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isNewTunnelCreated = true;
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m_currentTunnel = [[NETunnelProviderManager alloc] init];
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m_currentTunnel.localizedDescription = [NSString stringWithUTF8String:tunnelName.toStdString().c_str()];
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}
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}
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@catch (NSException *exception) {
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qDebug() << "IosController::connectVpn : exception" << QString::fromNSString(exception.reason);
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ok = false;
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m_currentTunnel = nullptr;
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}
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@finally {
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dispatch_semaphore_signal(semaphore);
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}
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}];
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dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
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if (!ok) return false;
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[[NSNotificationCenter defaultCenter]
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removeObserver:(__bridge NSObject *)m_iosControllerWrapper];
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[[NSNotificationCenter defaultCenter]
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addObserver:(__bridge NSObject *)m_iosControllerWrapper
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selector:@selector(vpnStatusDidChange:)
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name:NEVPNStatusDidChangeNotification
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object:m_currentTunnel.connection];
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if (proto == amnezia::Proto::OpenVpn) {
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return setupOpenVPN();
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}
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if (proto == amnezia::Proto::Cloak) {
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return setupCloak();
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}
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if (proto == amnezia::Proto::WireGuard) {
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return setupWireGuard();
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}
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return false;
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}
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void IosController::disconnectVpn()
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{
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if (!m_currentTunnel) {
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return;
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}
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if ([m_currentTunnel.connection isKindOfClass:[NETunnelProviderSession class]]) {
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[(NETunnelProviderSession *)m_currentTunnel.connection stopTunnel];
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}
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}
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void IosController::checkStatus()
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{
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NSString *actionKey = [NSString stringWithUTF8String:MessageKey::action];
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NSString *actionValue = [NSString stringWithUTF8String:Action::getStatus];
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NSString *tunnelIdKey = [NSString stringWithUTF8String:MessageKey::tunnelId];
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NSString *tunnelIdValue = !m_tunnelId.isEmpty() ? m_tunnelId.toNSString() : @"";
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NSDictionary* message = @{actionKey: actionValue, tunnelIdKey: tunnelIdValue};
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sendVpnExtensionMessage(message, [&](NSDictionary* response){
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uint64_t txBytes = [response[@"tx_bytes"] intValue];
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uint64_t rxBytes = [response[@"rx_bytes"] intValue];
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emit bytesChanged(rxBytes - m_rxBytes, txBytes - m_txBytes);
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m_rxBytes = rxBytes;
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m_txBytes = txBytes;
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});
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}
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void IosController::vpnStatusDidChange(void *pNotification)
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{
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NETunnelProviderSession *session = (NETunnelProviderSession *)pNotification;
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if (session /* && session == TunnelManager.session */ ) {
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qDebug() << "IosController::vpnStatusDidChange" << iosStatusToState(session.status) << session;
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emit connectionStateChanged(iosStatusToState(session.status));
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}
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}
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void IosController::vpnConfigurationDidChange(void *pNotification)
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{
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qDebug() << "IosController::vpnConfigurationDidChange" << pNotification;
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}
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bool IosController::setupOpenVPN()
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{
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qDebug() << "IosController::setupOpenVPN";
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QJsonObject ovpn = m_rawConfig[ProtocolProps::key_proto_config_data(amnezia::Proto::OpenVpn)].toObject();
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QString ovpnConfig = ovpn[config_key::config].toString();
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return startOpenVPN(ovpnConfig);
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}
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bool IosController::setupCloak()
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{
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qDebug() << "IosController::setupCloak";
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m_serverAddress = @"127.0.0.1";
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QJsonObject ovpn = m_rawConfig[ProtocolProps::key_proto_config_data(amnezia::Proto::OpenVpn)].toObject();
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QString ovpnConfig = ovpn[config_key::config].toString();
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QJsonObject cloak = m_rawConfig[ProtocolProps::key_proto_config_data(amnezia::Proto::Cloak)].toObject();
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cloak["NumConn"] = 1;
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if (cloak.contains("remote")) {
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cloak["RemoteHost"] = cloak["remote"].toString();
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}
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if (cloak.contains("port")) {
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cloak["RemotePort"] = cloak["port"].toString();
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}
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cloak.remove("remote");
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cloak.remove("port");
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cloak.remove("transport_proto");
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QJsonObject jsonObject {};
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foreach(const QString& key, cloak.keys()) {
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if(key == "NumConn" or key == "StreamTimeout"){
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jsonObject.insert(key, cloak.value(key).toInt());
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}else{
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jsonObject.insert(key, cloak.value(key).toString());
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}
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}
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QJsonDocument doc(jsonObject);
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QString strJson(doc.toJson(QJsonDocument::Compact));
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QString cloakBase64 = strJson.toUtf8().toBase64();
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ovpnConfig.append("\n<cloak>\n");
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ovpnConfig.append(cloakBase64);
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ovpnConfig.append("\n</cloak>\n");
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return startOpenVPN(ovpnConfig);
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}
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bool IosController::setupWireGuard()
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{
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qDebug() << "IosController::setupWireGuard";
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QJsonObject config = m_rawConfig[ProtocolProps::key_proto_config_data(amnezia::Proto::WireGuard)].toObject();
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QString wgConfig = config[config_key::config].toString();
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return startWireGuard(wgConfig);
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}
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bool IosController::startOpenVPN(const QString &config)
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{
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qDebug() << "IosController::startOpenVPN";
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NETunnelProviderProtocol *tunnelProtocol = [[NETunnelProviderProtocol alloc] init];
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tunnelProtocol.providerBundleIdentifier = [NSString stringWithUTF8String:VPN_NE_BUNDLEID];
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tunnelProtocol.providerConfiguration = @{@"ovpn": [[NSString stringWithUTF8String:config.toStdString().c_str()] dataUsingEncoding:NSUTF8StringEncoding]};
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tunnelProtocol.serverAddress = m_serverAddress;
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m_currentTunnel.protocolConfiguration = tunnelProtocol;
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startTunnel();
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}
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bool IosController::startWireGuard(const QString &config)
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{
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qDebug() << "IosController::startWireGuard";
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NETunnelProviderProtocol *tunnelProtocol = [[NETunnelProviderProtocol alloc] init];
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tunnelProtocol.providerBundleIdentifier = [NSString stringWithUTF8String:VPN_NE_BUNDLEID];
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tunnelProtocol.providerConfiguration = @{@"wireguard": [[NSString stringWithUTF8String:config.toStdString().c_str()] dataUsingEncoding:NSUTF8StringEncoding]};
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tunnelProtocol.serverAddress = m_serverAddress;
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m_currentTunnel.protocolConfiguration = tunnelProtocol;
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startTunnel();
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}
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void IosController::startTunnel()
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{
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m_rxBytes = 0;
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m_txBytes = 0;
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[m_currentTunnel setEnabled:YES];
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[m_currentTunnel saveToPreferencesWithCompletionHandler:^(NSError *saveError) {
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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qDebug() << "IosController::saveToPreferencesWithCompletionHandler called from thread:" << QThread::currentThread();
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if (saveError) {
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qDebug() << "IosController::startOpenVPN : Connect OpenVPN Tunnel Save Error" << saveError.localizedDescription.UTF8String;
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emit connectionStateChanged(Vpn::ConnectionState::Error);
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return;
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}
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[m_currentTunnel loadFromPreferencesWithCompletionHandler:^(NSError *loadError) {
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qDebug() << "IosController::loadFromPreferencesWithCompletionHandler called from thread:" << QThread::currentThread();
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if (loadError) {
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qDebug() << "IosController::startOpenVPN : Connect OpenVPN Tunnel Load Error" << loadError.localizedDescription.UTF8String;
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emit connectionStateChanged(Vpn::ConnectionState::Error);
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return;
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}
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NSError *startError = nil;
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qDebug() << iosStatusToState(m_currentTunnel.connection.status);
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NSString *actionKey = [NSString stringWithUTF8String:MessageKey::action];
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NSString *actionValue = [NSString stringWithUTF8String:Action::start];
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NSString *tunnelIdKey = [NSString stringWithUTF8String:MessageKey::tunnelId];
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NSString *tunnelIdValue = !m_tunnelId.isEmpty() ? m_tunnelId.toNSString() : @"";
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NSDictionary* message = @{actionKey: actionValue, tunnelIdKey: tunnelIdValue};
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sendVpnExtensionMessage(message, [&](NSDictionary* response){
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qDebug() << "sendVpnExtensionMessage" << response;
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});
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BOOL started = [m_currentTunnel.connection startVPNTunnelWithOptions:nil andReturnError:&startError];
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if (!started || startError) {
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qDebug() << "IosController::startOpenVPN : Connect OpenVPN Tunnel Start Error"
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<< (startError ? startError.localizedDescription.UTF8String : "");
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emit connectionStateChanged(Vpn::ConnectionState::Error);
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} else {
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qDebug() << "IosController::startOpenVPN : Starting the tunnel succeeded";
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}
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}];
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});
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}];
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}
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bool IosController::isOurManager(NETunnelProviderManager* manager) {
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NETunnelProviderProtocol* tunnelProto = (NETunnelProviderProtocol*)manager.protocolConfiguration;
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if (!tunnelProto) {
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qDebug() << "Ignoring manager because the proto is invalid";
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return false;
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}
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if (!tunnelProto.providerBundleIdentifier) {
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qDebug() << "Ignoring manager because the bundle identifier is null";
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return false;
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}
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if (![tunnelProto.providerBundleIdentifier isEqualToString:[NSString stringWithUTF8String:VPN_NE_BUNDLEID]]) {
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qDebug() << "Ignoring manager because the bundle identifier doesn't match";
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return false;
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}
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qDebug() << "Found the manager with the correct bundle identifier:" << QString::fromNSString(tunnelProto.providerBundleIdentifier);
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return true;
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}
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void IosController::sendVpnExtensionMessage(NSDictionary* message, std::function<void(NSDictionary*)> callback)
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{
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if (!m_currentTunnel) {
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qDebug() << "Cannot set an extension callback without a tunnel manager";
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return;
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}
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NSError *error = nil;
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NSData *data = [NSJSONSerialization dataWithJSONObject:message options:0 error:&error];
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if (!data || error) {
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qDebug() << "Failed to serialize message to VpnExtension as JSON. Error:"
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<< [error.localizedDescription UTF8String];
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return;
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}
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void (^completionHandler)(NSData *) = ^(NSData *responseData) {
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if (!responseData) {
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callback(nil);
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return;
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}
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NSError *deserializeError = nil;
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NSDictionary *response = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:&deserializeError];
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if (response && [response isKindOfClass:[NSDictionary class]]) {
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callback(response);
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return;
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} else if (deserializeError) {
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qDebug() << "Failed to deserialize the VpnExtension response";
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}
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callback(nil);
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};
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NETunnelProviderSession *session = (NETunnelProviderSession *)m_currentTunnel.connection;
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NSError *sendError = nil;
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if ([session respondsToSelector:@selector(sendProviderMessage:returnError:responseHandler:)]) {
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[session sendProviderMessage:data returnError:&sendError responseHandler:completionHandler];
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} else {
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qDebug() << "Method sendProviderMessage:responseHandler:error: does not exist";
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}
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if (sendError) {
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qDebug() << "Failed to send message to VpnExtension. Error:"
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<< [sendError.localizedDescription UTF8String];
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}
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}
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