[impl] Support for online activation

CCEngineServer/CMakeLists.txt

@@ -1,4 +1,4 @@
-# CMakeList.txt : CMake project for CMakeProject1, include source and define
+# CMakeList.txt : CMake project for CCEngineServer, include source and define
 # project specific logic here.
 #
 cmake_minimum_required (VERSION 3.8)
@@ -30,8 +30,19 @@ else(WIN32)
 endif()
 
 # Add source to this project's executable.
-add_executable (CMakeProject1 "CCServer.cpp" "CCServer.h" "CryptoUtils.cpp" "CryptoUtils.h" "CMakeProject1.cpp" "CMakeProject1.h" "HashUtils.cpp" "HashUtils.h" "JSONSerialization.cpp" "JSONSerialization.h"  "LicenseClient.cpp" "LicenseClient.h" "SystemParams.cpp" "SystemParams.h" "SystemParamsProvider.h" "SystemParamsProvider_win.cpp" "SystemParamsProvider_win.h" "SystemParamsProvider_linux.cpp" "SystemParamsProvider_win.cpp" "OSUtils.h" "OSUtils_win.cpp")
+add_executable (
+    CCEngineServer
+    "CCServer.cpp" "CCServer.h"
+    "CryptoUtils.cpp" "CryptoUtils.h"
+    "HashUtils.cpp" "HashUtils.h"
+    "HTTPClient.cpp" "HTTPClient.h"
+    "JSONSerialization.cpp" "JSONSerialization.h"
+    "LicenseClient.cpp" "LicenseClient.h"
+    "SystemParams.cpp" "SystemParams.h"
+    "SystemParamsProvider.h" "SystemParamsProvider_win.cpp" "SystemParamsProvider_win.h" "SystemParamsProvider_linux.cpp" "SystemParamsProvider_win.cpp"
+    "OSUtils.h" "OSUtils_win.cpp"
+    "main.cpp" "version.h")
 
-target_link_libraries(CMakeProject1 ${CONAN_LIBS})
+target_link_libraries(CCEngineServer ${CONAN_LIBS})
 
 # TODO: Add tests and install targets if needed.

CCEngineServer/HTTPClient.cpp

@@ -0,0 +1,321 @@
+#include "HTTPClient.h"
+
+struct IUnknown; // Workaround for "combaseapi.h(229): error C2187: syntax error: 'identifier' was unexpected here" when using /permissive-
+#include <curl/curl.h>
+
+#include <memory>
+#include <sstream>
+#include <iostream>
+
+namespace 
+{
+
+    static
+        void dump(const char *text,
+            FILE *stream, unsigned char *ptr, size_t size)
+    {
+        unsigned int width = 0x10;
+
+        fprintf(stream, "%s, %10.10ld bytes (0x%8.8lx)\n",
+            text, (long)size, (long)size);
+
+        fwrite(ptr, 1, size, stream);
+        fputc('\n', stream); // newline
+    }
+
+    static
+        int my_trace(CURL *handle, curl_infotype type,
+            char *data, size_t size,
+            void *userp)
+    {
+        const char *text;
+        (void)handle; /* prevent compiler warning */
+        (void)userp;
+
+        switch (type) {
+        case CURLINFO_TEXT:
+            fprintf(stderr, "== Info: %s", data);
+        default: /* in case a new one is introduced to shock us */
+            return 0;
+
+        case CURLINFO_HEADER_OUT:
+            text = "=> Send header";
+            break;
+        case CURLINFO_DATA_OUT:
+            text = "=> Send data";
+            break;
+        case CURLINFO_SSL_DATA_OUT:
+            text = "=> Send SSL data";
+            break;
+        case CURLINFO_HEADER_IN:
+            text = "<= Recv header";
+            break;
+        case CURLINFO_DATA_IN:
+            text = "<= Recv data";
+            break;
+        case CURLINFO_SSL_DATA_IN:
+            text = "<= Recv SSL data";
+            break;
+        }
+
+        dump(text, stderr, (unsigned char *)data, size);
+        return 0;
+    }
+
+static size_t reader(char *ptr, size_t size, size_t nmemb, std::istream *is)
+{
+    std::streamsize totalRead = 0;
+    if (*is)
+    {
+        is->read(&ptr[totalRead], size * nmemb - totalRead);
+//        is->read(&ptr[totalRead], 1);
+        totalRead = is->gcount();
+    }
+
+    return static_cast<size_t>(totalRead);
+}
+
+static size_t writer(char *data, size_t size, size_t nmemb, std::ostream *os)
+{
+    if (os == NULL)
+        return 0;
+
+    os->write(data, size*nmemb);
+
+    return size * nmemb;
+}
+
+struct CURLDeleter
+{
+    void operator() (CURL* ptr)
+    {
+        if (ptr)
+        {
+            curl_easy_cleanup(ptr);
+        }
+    }
+};
+
+struct curl_slist_deleter
+{
+    void operator() (curl_slist* ptr)
+    {
+        if (ptr)
+        {
+            curl_slist_free_all(ptr);
+        }
+    }
+};
+
+struct DownloadSession
+{
+    char errorBuffer[CURL_ERROR_SIZE] = { 0 };
+    std::unique_ptr<CURL, CURLDeleter> conn;
+    std::unique_ptr<curl_slist, curl_slist_deleter> extraHeaders;
+};
+
+DownloadSession initCurlRequest(const std::string& url, std::ostream &os)
+{
+    DownloadSession result;
+    CURLcode code;
+
+    std::unique_ptr<CURL, CURLDeleter> conn(curl_easy_init());
+
+    if (!conn)
+    {
+        throw std::runtime_error("Failed to create CURL connection");
+    }
+
+    code = curl_easy_setopt(conn.get(), CURLOPT_ERRORBUFFER, result.errorBuffer);
+    if (code != CURLE_OK)
+    {
+        std::ostringstream oss;
+        oss << "Failed to set error buffer [" << code << "]";
+        throw std::runtime_error(oss.str());
+    }
+
+    const char* errorBuffer = result.errorBuffer;
+    code = curl_easy_setopt(conn.get(), CURLOPT_URL, url.c_str());
+    if (code != CURLE_OK)
+    {
+        std::ostringstream oss;
+        oss << "Failed to set URL [" << errorBuffer << "]";
+        throw std::runtime_error(oss.str());
+    }
+
+    code = curl_easy_setopt(conn.get(), CURLOPT_FOLLOWLOCATION, 1L);
+    if (code != CURLE_OK)
+    {
+        std::ostringstream oss;
+        oss << "Failed to set redirect option [" << errorBuffer << "]";
+        throw std::runtime_error(oss.str());
+    }
+
+    code = curl_easy_setopt(conn.get(), CURLOPT_MAXREDIRS, 5L);
+    if (code != CURLE_OK)
+    {
+        std::ostringstream oss;
+        oss << "Failed to set maximum number of redirects [" << errorBuffer << "]";
+        throw std::runtime_error(oss.str());
+    }
+
+    code = curl_easy_setopt(conn.get(), CURLOPT_WRITEFUNCTION, writer);
+    if (code != CURLE_OK) 
+    {
+        std::ostringstream oss;
+        oss << "Failed to set write function [" << errorBuffer << "]";
+        throw std::runtime_error(oss.str());
+    }
+
+    code = curl_easy_setopt(conn.get(), CURLOPT_WRITEDATA, &os);
+    if (code != CURLE_OK)
+    {
+        std::ostringstream oss;
+        oss << "Failed to set write data [" << errorBuffer << "]";
+        throw std::runtime_error(oss.str());
+    }
+
+#ifndef NDEBUG
+    code = curl_easy_setopt(conn.get(), CURLOPT_DEBUGFUNCTION, my_trace);
+    if (code != CURLE_OK)
+    {
+        std::ostringstream oss;
+        oss << "Failed to set debug function";
+        throw std::runtime_error(oss.str());
+    }
+    code = curl_easy_setopt(conn.get(), CURLOPT_VERBOSE, 1);
+    if (code != CURLE_OK)
+    {
+        std::ostringstream oss;
+        oss << "Failed to set verbose mode";
+        throw std::runtime_error(oss.str());
+    }
+#endif // !NDEBUG
+
+    result.conn = std::move(conn);
+
+    return result;
+}
+
+DownloadSession initCurlPostJsonRequest(const std::string& url, std::istream& is, size_t length, std::ostream &os)
+{
+    DownloadSession result = initCurlRequest(url, os);
+    CURLcode code;
+
+    auto contentLengthHeader = std::string("Content-Length: ") + std::to_string(length);
+
+    struct curl_slist *headers = NULL;
+    headers = curl_slist_append(headers, "Accept: application/json");
+    headers = curl_slist_append(headers, "Content-Type: application/json");
+    headers = curl_slist_append(headers, contentLengthHeader.c_str());
+    headers = curl_slist_append(headers, "Charsets: utf-8");
+    result.extraHeaders.reset(headers);
+
+    code = curl_easy_setopt(result.conn.get(), CURLOPT_POST, 1L);
+    if (code != CURLE_OK)
+    {
+        std::ostringstream oss;
+        oss << "Failed to set post option [" << result.errorBuffer << "]";
+        throw std::runtime_error(oss.str());
+    }
+
+    code = curl_easy_setopt(result.conn.get(), CURLOPT_HTTPHEADER, result.extraHeaders.get());
+    if (code != CURLE_OK)
+    {
+        std::ostringstream oss;
+        oss << "Failed to set http headers [" << result.errorBuffer << "]";
+        throw std::runtime_error(oss.str());
+    }
+
+    code = curl_easy_setopt(result.conn.get(), CURLOPT_READFUNCTION, reader);
+    if (code != CURLE_OK)
+    {
+        std::ostringstream oss;
+        oss << "Failed to set read function [" << result.errorBuffer << "]";
+        throw std::runtime_error(oss.str());
+    }
+
+    code = curl_easy_setopt(result.conn.get(), CURLOPT_READDATA, &is);
+    if (code != CURLE_OK)
+    {
+        std::ostringstream oss;
+        oss << "Failed to set read data [" << result.errorBuffer << "]";
+        throw std::runtime_error(oss.str());
+    }
+
+    return result;
+}
+
+} // anonymous namespace
+
+HTTPClient::HTTPClient()
+{
+    curl_global_init(CURL_GLOBAL_DEFAULT);
+}
+
+void HTTPClient::get(const std::string& url, std::ostream& dstStream)
+{
+    auto session = initCurlRequest(url, dstStream);
+
+    auto code = curl_easy_perform(session.conn.get());
+
+    if (code != CURLE_OK)
+    {
+        session.conn.release();
+        if (code == CURLE_COULDNT_CONNECT)
+        {
+            throw CouldNotConnectException();
+        }
+
+        std::ostringstream oss;
+        oss << "Failed to get '" << url << "' [" << session.errorBuffer << "]";
+        throw std::runtime_error(oss.str());
+    }
+    else
+    {
+        long http_code = 0;
+        curl_easy_getinfo(session.conn.get(), CURLINFO_RESPONSE_CODE, &http_code);
+        if (http_code >= 400)
+        {
+            std::ostringstream oss;
+            oss << "Failed to get '" << url << "' [HTTP code: " << http_code << "]";
+            throw std::runtime_error(oss.str());
+        }
+    }
+}
+
+void HTTPClient::postJson(const std::string& url, std::istream& json, size_t length, std::ostream& dstStream)
+{
+    auto session = initCurlPostJsonRequest(url, json, length, dstStream);
+
+    auto code = curl_easy_perform(session.conn.get());
+
+    if (code != CURLE_OK)
+    {
+        session.conn.release();
+        if (code == CURLE_COULDNT_CONNECT)
+        {
+            throw CouldNotConnectException();
+        }
+        std::ostringstream oss;
+        oss << "Failed to post '" << url << "' [" << session.errorBuffer << "]";
+        throw std::runtime_error(oss.str());
+    }
+    else
+    {
+        long http_code = 0;
+        curl_easy_getinfo(session.conn.get(), CURLINFO_RESPONSE_CODE, &http_code);
+        if (http_code >= 400)
+        {
+            std::ostringstream oss;
+            oss << "Failed to get '" << url << "' [HTTP code: " << http_code << "]";
+            throw std::runtime_error(oss.str());
+        }
+    }
+}
+
+void HTTPClient::postJson(const std::string& url, const std::string& json, std::ostream& dstStream)
+{
+    std::istringstream is(json);
+    return postJson(url, is, json.size(), dstStream);
+}

CCEngineServer/HTTPClient.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <string>
+#include <ostream>
+
+class CouldNotConnectException : public std::exception
+{
+public:
+    CouldNotConnectException()
+    {}
+
+    virtual ~CouldNotConnectException() throw () {}
+};
+
+class HTTPClient
+{
+public:
+    HTTPClient();
+
+public:
+    void get(const std::string& url, std::ostream& dstStream);
+    void postJson(const std::string& url, std::istream& json, size_t length, std::ostream& dstStream);
+    void postJson(const std::string& url, const std::string& json, std::ostream& dstStream);
+};

CCEngineServer/LicenseClient.cpp

@@ -58,6 +58,7 @@ namespace
 {
 
 static const std::string productId = "cocserver";
+static const std::string serverPath = "https://license.apis.sk/api/v1";
 
 static const uint32_t initializationVectorSize = AES::BLOCKSIZE;
 static const uint32_t macTagSize = 16;
@@ -228,7 +229,15 @@ void serialize(std::ostream& os, const ActivationRequest& a)
 
 void deserialize(const pt::ptree& tree, ActivationResponse& a)
 {
-    deserialize(tree.get_child("success"), a.success);
+    auto successNode = tree.get_child_optional("success");
+    if (successNode)
+    {
+        deserialize(successNode.value(), a.success);
+    }
+    else
+    {
+        a.success = false;
+    }
     auto licenseFileOpt = tree.get_child_optional("licenseFile");
     if (licenseFileOpt)
     {
@@ -277,7 +286,7 @@ void LicenseClient::init()
     loadActivationData();
 }
 
-std::string LicenseClient::buildActivationRequest()
+std::string LicenseClient::buildOfflineActivationRequest()
 {
     PreactivationRequest req{ productId, m_systemParams };
 
@@ -324,6 +333,74 @@ std::string LicenseClient::buildActivationRequest()
         std::string("-----END ACTIVATION REQUEST-----\n");
 }
 
+bool LicenseClient::tryPreactivate(HTTPClient &httpClient)
+{
+    PreactivationRequest req{ productId, m_systemParams };
+
+    std::string jsonReq;
+    {
+        std::ostringstream ss1;
+        serialize(ss1, req);
+        jsonReq = ss1.str();
+    }
+
+    std::string jsonRes;
+    {
+        std::ostringstream ss2;
+        httpClient.postJson(serverPath + "/activate0", jsonReq, ss2);
+        jsonRes = ss2.str();
+    }
+
+    ActivationResponse activationResponse;
+    pt::ptree root;
+    std::istringstream ss2(jsonRes);
+    pt::read_json(ss2, root);
+    deserialize(root, activationResponse);
+    if (activationResponse.success)
+    {
+        {
+            const auto& licenseData = activationResponse.licenseFile.value();
+            std::ofstream os(m_licenseFile, std::ofstream::binary);
+            os.write(licenseData.data(), licenseData.size());
+        }
+        return loadActivationData();
+    }
+    return false;
+}
+
+bool LicenseClient::activate(HTTPClient &httpClient, const std::string & licenseNumber)
+{
+	auto validLicenseKey = validateLicenseKey(licenseNumber);
+	if (!validLicenseKey)
+	{
+		return false;
+	}
+	
+    std::ostringstream ss1;
+
+    ActivationRequest req{ productId, m_systemParams, validLicenseKey.value() };
+    serialize(ss1, req);
+
+    std::stringstream ss2;
+    httpClient.postJson(serverPath + "/activate", ss1.str() , ss2);
+
+    ActivationResponse activationResponse;
+    pt::ptree root;
+    pt::read_json(ss2, root);
+    deserialize(root, activationResponse);
+    if (activationResponse.success)
+    {
+        {
+            const auto& licenseData = activationResponse.licenseFile.value();
+            std::ofstream os(m_licenseFile, std::ofstream::binary);
+            os.write(licenseData.data(), licenseData.size());
+        }
+        return loadActivationData();
+    }
+    return false;
+}
+
+
 bool LicenseClient::loadActivationData()
 {
     if (fs::is_regular_file(m_licenseFile))

CCEngineServer/LicenseClient.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "HTTPClient.h"
 #include "SystemParamsProvider.h"
 
 #include <optional>
@@ -25,9 +26,11 @@ public:
 
 public:
     void init();
-    std::string buildActivationRequest();
+    std::string buildOfflineActivationRequest();
     bool isActivated() const { return m_activationData.has_value(); }
     std::optional<std::string> activationNumber() const { return m_activationData.has_value() ? m_activationData->activationId : std::optional<std::string>(); }
+    bool tryPreactivate(HTTPClient &httpClient);
+    bool activate(HTTPClient &httpClient, const std::string& licenseNumber );
     auto licensedModules() { if (!isActivated()) { throw std::runtime_error("Not active"); } return m_activationData->licensedModules; }
 
 private:

CCEngineServer/conanfile.txt

@@ -1,6 +1,7 @@
 [requires]
-boost/1.76.0
+boost/1.77.0
 cryptopp/8.5.0
+libcurl/7.79.1
 
 [generators]
 cmake
@@ -8,3 +9,5 @@ cmake
 [options]
 boost:shared=False
 cryptopp:shared=False
+libcurl:shared=False
+libcurl:with_ssl=openssl

CCEngineServer/main.cpp

@@ -2,6 +2,7 @@
 
 #include "LicenseClient.h"
 #include "SystemParamsProvider.h"
+#include "version.h"
 
 #include <boost/log/core.hpp>
 #include <boost/log/trivial.hpp>
@@ -26,7 +27,7 @@ namespace keywords = boost::log::keywords;
 volatile bool signalCaught = false;
 
 void signalHandler(int signum) {
-    std::cout << "Interrupt signal (" << signum << ") received.\n";
+    BOOST_LOG_TRIVIAL(info) << "Interrupt signal (" << signum << ") received.";
 
     signalCaught = true;
 }
@@ -60,6 +61,13 @@ int main(int argc, const char* argv[])
     po::options_description generalOptions("General options");
     generalOptions.add_options()
         ("help", "produce help message")
+        ("version", "print application version")
+        ("activate_online", "activate online")
+        ("activate_offline", "start offline activation process")
+#ifndef WIN32
+        ("set_uid", po::value<uid_t>()->default_value(0), "Switch UID after successfull startup")
+        ("set_gid", po::value<gid_t>()->default_value(0), "Switch GID after successfull startup")
+#endif
         ("bind_ip", po::value<std::string>()->default_value("0.0.0.0"), "ip address to listen for connections")
         ("port", po::value<uint16_t>()->default_value(8080), "port")
         ("data_root", po::value<std::string>()->default_value("."), "root directory with data")
@@ -80,7 +88,14 @@ int main(int argc, const char* argv[])
     po::notify(vm);
 
     if (vm.count("help")) {
-        std::cout << generalOptions << "\n";
+        std::cout << "CCEngineServer - Catalogue of Currencies serving solution" << std::endl;
+        std::cout << COPYRIGHT_NOTICE << std::endl << std::endl;
+        std::cout << generalOptions << std::endl;
+        return 1;
+    }
+
+    if (vm.count("version")) {
+        std::cout << VERSION << std::endl;
         return 1;
     }
 
@@ -97,11 +112,82 @@ int main(int argc, const char* argv[])
     LicenseClient licenseClient(systemParamsProvider, "license.dat");
     licenseClient.init();
 
+#ifndef WIN32
+    auto gidToSet = vm["set_gid"].as<gid_t>();
+    if (gidToSet > 0 && setgid(gidToSet) != 0) {
+        BOOST_LOG_TRIVIAL(error) << "Failed to set group id: " << gidToSet;
+        return -11;
+    }
+
+    auto uidToSet = vm["set_uid"].as<uid_t>();
+    if (uidToSet > 0 && setuid(uidToSet) != 0) {
+        BOOST_LOG_TRIVIAL(error) << "Failed to set user id: " << uidToSet;
+        return -10;
+    }
+#endif
+
+    if (vm.count("activate_online")) {
+        HTTPClient httpClient;
+
+        try {
+            if (licenseClient.tryPreactivate(httpClient)) {
+                std::cout << "Pre-activation successfull. Please go ahead with normal application start" << std::endl;
+                return 3;
+            }
+        }
+        catch (CouldNotConnectException& e){
+            BOOST_LOG_TRIVIAL(error) << "Connection to server failed. Please check your internet"
+                << "connection.If the problem persists, please contact customer support.";
+            BOOST_LOG_TRIVIAL(error) << e.what();
+            return -5;
+        }
+        catch (std::runtime_error &e) {
+            BOOST_LOG_TRIVIAL(error) << "Pre-activate failed. Please retry and if the problem persists, please contact customer support.";
+            BOOST_LOG_TRIVIAL(debug) << e.what();
+            return -6;
+        }
+        BOOST_LOG_TRIVIAL(info) << "Automatic pre-activation failed. Requesting license number...";
+
+        std::string licenseNumber;
+        std::cout << "Please enter license number (format XXXX-XXXX-XXXX-XXXX-XXXX-XXXX):" << std::endl;
+        std::getline(std::cin, licenseNumber);
+
+        std::cout << "Sending activation request to server..." << std::endl;
+
+        try {
+            if (!licenseClient.activate(httpClient, licenseNumber)) {
+                std::cerr << "Activation failed" << std::endl;
+                return -2;
+            }
+        }
+        catch (CouldNotConnectException& e) {
+            BOOST_LOG_TRIVIAL(error) << "Connection to server failed. Please check your internet"
+                << "connection.If the problem persists, please contact customer support.";
+            BOOST_LOG_TRIVIAL(error) << e.what();
+            return -3;
+        }
+        catch (std::runtime_error& e) {
+            BOOST_LOG_TRIVIAL(error) << "Activation failed. Please retry and if the problem persists, please contact customer support.";
+            BOOST_LOG_TRIVIAL(debug) << e.what();
+            return -4;
+        }
+
+        std::cout << "Activation successfull. Please go ahead with normal application start" << std::endl;
+        return 2;
+    }
+
+    if (vm.count("activate_offline")) {
+        BOOST_LOG_TRIVIAL(debug) << "Offline activation was requested";
+        std::cout << "Offline activation was requested";
+        std::cout << "Copy following activation request and refer to the manual: " << std::endl
+            << licenseClient.buildOfflineActivationRequest() << std::endl;
+
+        return 3;
+    }
+
     if (!licenseClient.isActivated()) {
-        const std::string msg = "Application is not activated. Please contact Catalogue of Currencies support.";
-        BOOST_LOG_TRIVIAL(error) << msg << " Exiting...";
-        std::cout << msg << std::endl;
-        std::cout << "Activation request: " << std::endl << licenseClient.buildActivationRequest() << std::endl;
+        BOOST_LOG_TRIVIAL(warning) << "Application is not activated. Please contact customer support.";
+        BOOST_LOG_TRIVIAL(info) << "Exiting...";
         return -2;
     }
 

CCEngineServer/version.h

@@ -0,0 +1,2 @@
+#define VERSION "21.45"
+#define COPYRIGHT_NOTICE "©2021 Apis spol. s r.o."

CMakeLists.txt

@@ -7,11 +7,11 @@ if (${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Windows")
 	set (CMAKE_SYSTEM_VERSION 8.1 CACHE TYPE INTERNAL FORCE) #Force 8.1 SDK, to keep it compatible with win7
 endif()
 
-project ("CMakeProject1")
+project ("CCEngineServer")
 
 IF(WIN32)
 ADD_DEFINITIONS(/bigobj)
 ENDIF(WIN32)
 
 # Include sub-projects.
-add_subdirectory ("CMakeProject1")
+add_subdirectory ("CCEngineServer")

CMakeProject1/CMakeProject1.h

@@ -1,8 +0,0 @@
-// CMakeProject1.h : Include file for standard system include files,
-// or project specific include files.
-
-#pragma once
-
-#include <iostream>
-
-// TODO: Reference additional headers your program requires here.