Linux IPSec initial

client/CMakeLists.txt

@@ -306,6 +306,15 @@ 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 @@ public:
     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 +1,101 @@
+#include <QCoreApplication>
+#include <QFileInfo>
+#include <QProcess>
+
+#include <QThread>
+
+#include <chrono>
+
+#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);
+}
+
+Ikev2Protocol::~Ikev2Protocol()
+{
+    qDebug() << "IpsecProtocol::~IpsecProtocol()";
+    disconnect_vpn();
+    Ikev2Protocol::stop();
+}
+
+void Ikev2Protocol::stop()
+{
+    setConnectionState(Vpn::ConnectionState::Disconnected);
+    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);
+    qDebug() << pem;
+
+    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::userName].toString());
+
+
+    setConnectionState(Vpn::ConnectionState::Connected);
+    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){
+    return false;
+}
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+bool Ikev2Protocol::disconnect_vpn(){
+    return true;
+}

client/protocols/ikev2_vpn_protocol_linux.h

@@ -0,0 +1,49 @@
+#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;
+
+
+    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/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)
     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

@@ -236,5 +236,6 @@
         <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>
     </qresource>
 </RCC>

client/server_scripts/ipsec/template.conf

@@ -0,0 +1,30 @@
+config setup
+    charondebug="ike 1, knl 1, cfg 0"
+    uniqueids=no
+
+conn ikev2-vpn
+    auto=add
+    compress=no
+    type=tunnel
+    keyexchange=ikev2
+    fragmentation=yes
+    forceencaps=yes 
+    dpdaction=clear
+    dpddelay=300s
+    rekey=no 
+    left=%any
+    leftid=$CLIENT_NAME
+    leftcert=$CLIENT_NAME.crt
+    leftsendcert=always
+    leftsubnet=0.0.0.0/0 
+    right=%any
+    rightid=%any
+    rightauth=rsa
+    rightsourceip=$IPSEC_VPN_L2TP_NET
+    rightdns=$PRIMARY_DNS,$SECONDARY_DNS
+    rightsendcert=never 
+    eap_identity=%identity 
+    ike=aes256-sha1-modp1024,aes128-sha1-modp1024
+    esp=aes256-sha1,aes256-sha2_512
+
+

ipc/ipc_interface.rep

@@ -32,5 +32,11 @@ class IpcInterface
     SLOT( bool enablePeerTraffic( const QJsonObject &configStr) );
     SLOT( bool enableKillSwitch( const QJsonObject &excludeAddr, int vpnAdapterIndex) );
     SLOT( bool updateResolvers(const QString& ifname, const QList<QHostAddress>& resolvers) );
+
+    SLOT( bool writeIPsecCaCert(QString cacert, QString uuid) );
+    SLOT( bool writeIPsecPrivate(QString privKey, QString uuid) );
+    SLOT( bool writeIPsecConfig(QString config) );
+    SLOT( bool writeIPsecUserCert(QString usercert, QString uuid) );
+    SLOT( bool writeIPsecPrivatePass(QString pass, QString uuid) );
 };
 

ipc/ipcserver.cpp

@@ -5,6 +5,7 @@
 #include <QLocalSocket>
 #include <QFileInfo>
 
+#include "qjsonarray.h"
 #include "router.h"
 #include "logger.h"
 
@@ -308,6 +309,62 @@ bool IpcServer::disableKillSwitch()
     return true;
 }
 
+bool IpcServer::writeIPsecConfig(QString config)
+{
+    qDebug() << "IPSEC: IPSec config file";
+    QString configFile = QString("/etc/ipsec.conf");
+    QFile ipSecConfFile(configFile);
+    if (ipSecConfFile.open(QIODevice::WriteOnly)) {
+        ipSecConfFile.write(config.toUtf8());
+        ipSecConfFile.close();
+    }
+}
+
+bool IpcServer::writeIPsecUserCert(QString usercert, QString uuid)
+{
+    qDebug() << "IPSEC: Write user cert " << uuid;
+    QString certName = QString("/etc/ipsec.d/certs/%1.crt").arg(uuid);
+    QFile userCertFile(certName);
+    if (userCertFile.open(QIODevice::WriteOnly)) {
+        userCertFile.write(usercert.toUtf8());
+        userCertFile.close();
+    }
+}
+
+bool IpcServer::writeIPsecCaCert(QString cacert, QString uuid)
+{
+    qDebug() << "IPSEC: Write CA cert user " << uuid;
+    QString certName = QString("/etc/ipsec.d/cacerts/%1.crt").arg(uuid);
+    QFile caCertFile(certName);
+    if (caCertFile.open(QIODevice::WriteOnly)) {
+        caCertFile.write(cacert.toUtf8());
+        caCertFile.close();
+    }
+}
+
+bool IpcServer::writeIPsecPrivate(QString privKey, QString uuid)
+{
+    qDebug() << "IPSEC: User private key " << uuid;
+    QString privateKey = QString("/etc/ipsec.d/private/%1.p12").arg(uuid);
+    QFile pKeyFile(privateKey);
+    if (pKeyFile.open(QIODevice::WriteOnly)) {
+        pKeyFile.write(QByteArray::fromBase64(privKey.toUtf8()));
+        pKeyFile.close();
+    }
+}
+
+
+bool IpcServer::writeIPsecPrivatePass(QString pass, QString uuid)
+{
+    qDebug() << "IPSEC: User private key " << uuid;
+    QFile secretsFile("/etc/ipsec.secrets");
+    QString P12 = QString(": P12 %1.p12 \"%2\" \n").arg(uuid, pass);
+    if (secretsFile.open(QIODevice::WriteOnly | QIODevice::Append)) {
+        secretsFile.write(P12.toUtf8());
+        secretsFile.close();
+    }
+}
+
 bool IpcServer::enablePeerTraffic(const QJsonObject &configStr)
 {
 #ifdef Q_OS_WIN

ipc/ipcserver.h

@@ -35,6 +35,12 @@ public:
     virtual bool enableKillSwitch(const QJsonObject &excludeAddr, int vpnAdapterIndex) override;
     virtual bool disableKillSwitch() override;
     virtual bool updateResolvers(const QString& ifname, const QList<QHostAddress>& resolvers) override;
+    virtual bool writeIPsecCaCert(QString cacert, QString uuid) override;
+    virtual bool writeIPsecPrivate(QString privKey, QString uuid) override;
+    virtual bool writeIPsecConfig(QString config) override;
+    virtual bool writeIPsecUserCert(QString usercert, QString uuid) override;
+    virtual bool writeIPsecPrivatePass(QString pass, QString uuid) override;
+
 
 private:
     int m_localpid = 0;