Linux IPSec protocol

client/CMakeLists.txt

@@ -317,6 +317,15 @@ endif()
 if(LINUX AND NOT ANDROID)
     set(LIBS ${LIBS} -static-libstdc++ -static-libgcc -ldl)
     link_directories(${CMAKE_CURRENT_LIST_DIR}/platforms/linux)
+
+    set(HEADERS ${HEADERS}
+        ${CMAKE_CURRENT_LIST_DIR}/protocols/ikev2_vpn_protocol_linux.h
+    )
+
+    set(SOURCES ${SOURCES}
+        ${CMAKE_CURRENT_LIST_DIR}/protocols/ikev2_vpn_protocol_linux.cpp
+    )
+
 endif()
 
 if(WIN32 OR (APPLE AND NOT IOS) OR (LINUX AND NOT ANDROID))

client/configurators/ikev2_configurator.cpp

@@ -64,6 +64,26 @@ QString Ikev2Configurator::createConfig(const ServerCredentials &credentials, Do
         return "";
     }
 
+#if defined(Q_OS_LINUX)
+    QString config = m_serverController->replaceVars(amnezia::scriptData(ProtocolScriptType::ipsec_template, container),
+                                                     m_serverController->genVarsForScript(credentials, container, containerConfig));
+
+    config.replace("$CLIENT_NAME", connData.clientId);
+    config.replace("$UUID1", QUuid::createUuid().toString());
+    config.replace("$SERVER_ADDR", connData.host);
+
+    QJsonObject jConfig;
+    jConfig[config_key::config] = config;
+
+    jConfig[config_key::hostName] = connData.host;
+    jConfig[config_key::userName] = connData.clientId;
+    jConfig[config_key::cert] = QString(connData.clientCert.toBase64());
+    jConfig[config_key::cacert] = QString(connData.caCert);
+    jConfig[config_key::password] = connData.password;
+
+    return QJsonDocument(jConfig).toJson();
+#endif
+
     return genIkev2Config(connData);
 }
 
@@ -73,6 +93,7 @@ QString Ikev2Configurator::genIkev2Config(const ConnectionData &connData)
     config[config_key::hostName] = connData.host;
     config[config_key::userName] = connData.clientId;
     config[config_key::cert] = QString(connData.clientCert.toBase64());
+    config[config_key::cacert] = QString(connData.caCert);
     config[config_key::password] = connData.password;
 
     return QJsonDocument(config).toJson();
@@ -115,3 +136,22 @@ QString Ikev2Configurator::genStrongSwanConfig(const ConnectionData &connData)
 
     return config;
 }
+
+QString Ikev2Configurator::processConfigWithLocalSettings(const QPair<QString, QString> &dns, const bool isApiConfig,
+                                                              QString &protocolConfigString)
+{
+    processConfigWithDnsSettings(dns, protocolConfigString);
+
+    QJsonObject json;
+    json[config_key::config] = protocolConfigString;
+    return QJsonDocument(json).toJson();
+}
+
+QString Ikev2Configurator::processConfigWithExportSettings(const QPair<QString, QString> &dns, const bool isApiConfig,
+                                                               QString &protocolConfigString)
+{
+    processConfigWithDnsSettings(dns, protocolConfigString);
+    QJsonObject json;
+    json[config_key::config] = protocolConfigString;
+    return QJsonDocument(json).toJson();
+}

client/configurators/ikev2_configurator.h

@@ -27,6 +27,10 @@ class Ikev2Configurator : public ConfiguratorBase
     QString genIkev2Config(const ConnectionData &connData);
     QString genMobileConfig(const ConnectionData &connData);
     QString genStrongSwanConfig(const ConnectionData &connData);
+    QString genIPSecConfig(const ConnectionData &connData);
+
+    QString processConfigWithLocalSettings(const QPair<QString, QString> &dns, const bool isApiConfig, QString &protocolConfigString);
+    QString processConfigWithExportSettings(const QPair<QString, QString> &dns, const bool isApiConfig, QString &protocolConfigString);
 
     ConnectionData prepareIkev2Config(const ServerCredentials &credentials,
         DockerContainer container, ErrorCode &errorCode);

client/containers/containers_defs.cpp

@@ -277,7 +277,7 @@ Proto ContainerProps::defaultProtocol(DockerContainer c)
 
 bool ContainerProps::isSupportedByCurrentPlatform(DockerContainer c)
 {
-#ifdef Q_OS_WINDOWS
+#if defined(Q_OS_WINDOWS) || defined(Q_OS_LINUX)
     return true;
 
 #elif defined(Q_OS_IOS)
@@ -309,13 +309,6 @@ bool ContainerProps::isSupportedByCurrentPlatform(DockerContainer c)
     case DockerContainer::SSXray: return true;
     default: return false;
     }
-
-#elif defined(Q_OS_LINUX)
-    switch (c) {
-    case DockerContainer::Ipsec: return false;
-    default: return true;
-    }
-
 #else
     return false;
 #endif

client/core/scripts_registry.cpp

@@ -50,6 +50,7 @@ QString amnezia::scriptName(ProtocolScriptType type)
     case ProtocolScriptType::wireguard_template: return QLatin1String("template.conf");
     case ProtocolScriptType::awg_template: return QLatin1String("template.conf");
     case ProtocolScriptType::xray_template: return QLatin1String("template.json");
+    case ProtocolScriptType::ipsec_template: return QLatin1String("template.conf");
     default: return QString();
     }
 }

client/core/scripts_registry.h

@@ -28,7 +28,8 @@ enum ProtocolScriptType {
     openvpn_template,
     wireguard_template,
     awg_template,
-    xray_template
+    xray_template,
+    ipsec_template
 };
 
 

client/protocols/ikev2_vpn_protocol_linux.cpp

@@ -0,0 +1,159 @@
+#include <QCoreApplication>
+#include <QFileInfo>
+#include <QProcess>
+
+#include <QThread>
+
+#include <chrono>
+
+#include "core/networkUtilities.h"
+
+#include "logger.h"
+#include "ikev2_vpn_protocol_linux.h"
+#include "utilities.h"
+#include "core/ipcclient.h"
+#include <openssl/pkcs12.h>
+#include <openssl/bio.h>
+#include <openssl/pem.h>
+
+
+static Ikev2Protocol* self = nullptr;
+
+
+Ikev2Protocol::Ikev2Protocol(const QJsonObject &configuration, QObject* parent) :
+    VpnProtocol(configuration, parent)
+{
+    self = this;
+    readIkev2Configuration(configuration);
+    m_routeGateway = NetworkUtilities::getGatewayAndIface();
+    m_vpnGateway = "192.168.43.10";
+    m_vpnLocalAddress = "192.168.43.10";
+    m_remoteAddress = configuration.value(amnezia::config_key::hostName).toString();
+    m_routeMode = configuration.value(amnezia::config_key::splitTunnelType).toInt();
+}
+
+Ikev2Protocol::~Ikev2Protocol()
+{
+    qDebug() << "IpsecProtocol::~IpsecProtocol()";
+    Ikev2Protocol::stop();
+}
+
+void Ikev2Protocol::stop()
+{
+    setConnectionState(Vpn::ConnectionState::Disconnected);
+    Ikev2Protocol::disconnect_vpn();
+    qDebug() << "IpsecProtocol::stop()";
+}
+
+void Ikev2Protocol::readIkev2Configuration(const QJsonObject &configuration)
+{
+    QJsonObject ikev2_data = configuration.value(ProtocolProps::key_proto_config_data(Proto::Ikev2)).toObject();
+    m_config = QJsonDocument::fromJson(ikev2_data.value(config_key::config).toString().toUtf8()).object();
+}
+
+ErrorCode Ikev2Protocol::start()
+{
+    STACK_OF(X509) *certstack = sk_X509_new_null();
+    BIO *p12 = BIO_new(BIO_s_mem());
+
+    EVP_PKEY *pkey;
+    X509 *cert;
+
+    BIO_write(p12, QByteArray::fromBase64(m_config[config_key::cert].toString().toUtf8()),
+              QByteArray::fromBase64(m_config[config_key::cert].toString().toUtf8()).size());
+
+    PKCS12 *pkcs12 = d2i_PKCS12_bio(p12, NULL);
+    PKCS12_parse(pkcs12, m_config[config_key::password].toString().toStdString().c_str(), &pkey, &cert, &certstack);
+    BIO *bio = BIO_new(BIO_s_mem());
+    PEM_write_bio_X509(bio, cert);
+
+    BUF_MEM *mem = NULL;
+    BIO_get_mem_ptr(bio, &mem);
+
+    std::string pem(mem->data, mem->length);
+    QString alias(pem.c_str());
+
+    IpcClient::Interface()->writeIPsecUserCert(alias, m_config[config_key::userName].toString());
+    IpcClient::Interface()->writeIPsecConfig(m_config[config_key::config].toString());
+    IpcClient::Interface()->writeIPsecCaCert(m_config[config_key::cacert].toString(), m_config[config_key::userName].toString());
+    IpcClient::Interface()->writeIPsecPrivate(m_config[config_key::cert].toString(), m_config[config_key::userName].toString());
+    IpcClient::Interface()->writeIPsecPrivatePass(m_config[config_key::password].toString(), m_config[config_key::hostName].toString(),
+                                                  m_config[config_key::userName].toString());
+
+    connect_to_vpn("ikev2-vpn");
+
+    if (!IpcClient::Interface()) {
+        return ErrorCode::AmneziaServiceConnectionFailed;
+    }
+
+    QString connectionStatus;
+
+    auto futureResult = IpcClient::Interface()->getTunnelStatus("ikev2-vpn");
+    futureResult.waitForFinished();
+
+    if (futureResult.returnValue().isEmpty()) {
+        auto futureResult = IpcClient::Interface()->getTunnelStatus("ikev2-vpn");
+        futureResult.waitForFinished();
+    }
+
+    connectionStatus = futureResult.returnValue();
+
+    if (connectionStatus.contains("ESTABLISHED")) {
+        QStringList lines = connectionStatus.split('\n');
+        for (auto iter = lines.begin(); iter!=lines.end(); iter++)
+        {
+            if (iter->contains("0.0.0.0/0")) {
+
+                m_routeGateway = iter->split("===", Qt::SkipEmptyParts).first();
+                m_routeGateway = m_routeGateway.split("   ").at(2);
+                m_routeGateway = m_routeGateway.split("/").first();
+                m_vpnLocalAddress = m_routeGateway;
+                qDebug() << "m_routeGateway " << m_routeGateway;
+
+
+                // killSwitch toggle
+                if (QVariant(m_config.value(config_key::killSwitchOption).toString()).toBool()) {
+                    IpcClient::Interface()->enableKillSwitch(m_config, 0);
+                }
+
+                if (m_routeMode == 0) {
+                    IpcClient::Interface()->routeAddList(m_vpnGateway, QStringList() << "0.0.0.0/1");
+                    IpcClient::Interface()->routeAddList(m_vpnGateway, QStringList() << "128.0.0.0/1");
+                    IpcClient::Interface()->routeAddList(m_routeGateway, QStringList() << m_remoteAddress);
+                }
+
+                IpcClient::Interface()->StopRoutingIpv6();
+
+            }
+        }
+        setConnectionState(Vpn::ConnectionState::Connected);
+    } else {
+        setConnectionState(Vpn::ConnectionState::Disconnected);
+    }
+
+    return ErrorCode::NoError;
+}
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+bool Ikev2Protocol::create_new_vpn(const QString & vpn_name,
+                                   const QString & serv_addr) {
+   qDebug() << "Ikev2Protocol::create_new_vpn()";
+   return true;
+}
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+bool Ikev2Protocol::delete_vpn_connection(const QString &vpn_name) {
+
+    return false;
+}
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+bool Ikev2Protocol::connect_to_vpn(const QString &vpn_name) {
+    IpcClient::Interface()->startIPsec(vpn_name);
+    QThread::msleep(3000);
+    return true;
+}
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+bool Ikev2Protocol::disconnect_vpn() {
+    IpcClient::Interface()->stopIPsec("ikev2-vpn");
+    IpcClient::Interface()->disableKillSwitch();
+    IpcClient::Interface()->StartRoutingIpv6();
+    return true;
+}

client/protocols/ikev2_vpn_protocol_linux.h

@@ -0,0 +1,51 @@
+#ifndef IKEV2_VPN_PROTOCOL_LINUX_H
+#define IKEV2_VPN_PROTOCOL_LINUX_H
+
+#include <QObject>
+#include <QProcess>
+#include <QString>
+#include <QTemporaryFile>
+#include <QTimer>
+
+#include "vpnprotocol.h"
+
+#include <string>
+#include <memory>
+#include <atomic>
+#include <thread>
+#include <condition_variable>
+#include <mutex>
+
+class Ikev2Protocol : public VpnProtocol
+{
+    Q_OBJECT
+
+public:
+    explicit Ikev2Protocol(const QJsonObject& configuration, QObject* parent = nullptr);
+    virtual ~Ikev2Protocol() override;
+
+    ErrorCode start() override;
+    void stop() override;
+
+    static QString tunnelName() { return "AmneziaVPN IKEv2"; }
+
+
+private:
+    void readIkev2Configuration(const QJsonObject &configuration);
+
+private:
+    QJsonObject m_config;
+    QString m_remoteAddress;
+    int m_routeMode;
+
+
+    bool create_new_vpn(const QString & vpn_name,
+                        const QString & serv_addr);
+    bool delete_vpn_connection(const QString &vpn_name);
+
+    bool connect_to_vpn(const QString & vpn_name);
+    bool disconnect_vpn();
+};
+
+
+#endif // IKEV2_VPN_PROTOCOL_LINUX_H

client/protocols/ikev2_vpn_protocol_windows.cpp

@@ -172,7 +172,8 @@ void Ikev2Protocol::newConnectionStateEventReceived(UINT unMsg, tagRASCONNSTATE
 
 void Ikev2Protocol::readIkev2Configuration(const QJsonObject &configuration)
 {
-    m_config = configuration.value(ProtocolProps::key_proto_config_data(Proto::Ikev2)).toObject();
+    QJsonObject ikev2_data = configuration.value(ProtocolProps::key_proto_config_data(Proto::Ikev2)).toObject();
+    m_config = QJsonDocument::fromJson(ikev2_data.value(config_key::config).toString().toUtf8()).object();
 }
 
 ErrorCode Ikev2Protocol::start()

client/protocols/protocols_defs.h

@@ -24,6 +24,7 @@ namespace amnezia
         constexpr char description[] = "description";
         constexpr char name[] = "name";
         constexpr char cert[] = "cert";
+        constexpr char cacert[] = "cacert";
         constexpr char config[] = "config";
 
         constexpr char containers[] = "containers";

client/protocols/vpnprotocol.cpp

@@ -16,6 +16,10 @@
     #include "ikev2_vpn_protocol_windows.h"
 #endif
 
+#ifdef Q_OS_LINUX
+#include "ikev2_vpn_protocol_linux.h"
+#endif
+
 VpnProtocol::VpnProtocol(const QJsonObject &configuration, QObject *parent)
     : QObject(parent),
       m_connectionState(Vpn::ConnectionState::Unknown),
@@ -106,7 +110,7 @@ QString VpnProtocol::vpnGateway() const
 VpnProtocol *VpnProtocol::factory(DockerContainer container, const QJsonObject &configuration)
 {
     switch (container) {
-#if defined(Q_OS_WINDOWS)
+#if defined(Q_OS_WINDOWS) || defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID)
     case DockerContainer::Ipsec: return new Ikev2Protocol(configuration);
 #endif
 #if defined(Q_OS_WINDOWS) || defined(Q_OS_MACX) || (defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID))

client/resources.qrc

@@ -199,6 +199,7 @@
         <file>server_scripts/socks5_proxy/Dockerfile</file>
         <file>server_scripts/socks5_proxy/configure_container.sh</file>
         <file>server_scripts/socks5_proxy/start.sh</file>
+        <file>server_scripts/ipsec/template.conf</file>
         <file>ui/qml/Pages2/PageProtocolAwgClientSettings.qml</file>
         <file>ui/qml/Pages2/PageProtocolWireGuardClientSettings.qml</file>
         <file>ui/qml/Pages2/PageSetupWizardApiServicesList.qml</file>

client/server_scripts/ipsec/configure_container.sh

@@ -242,6 +242,7 @@ conn ikev2-cp
   dpdtimeout=120
   dpdaction=clear
   auto=add
+  authby=rsa-sha1
   ikev2=insist
   rekey=no
   pfs=no