Merge branch 'feature/pc_identifiers' into develop issues #2 #3 #14 #49

Gabriele Contini

2020-03-15 36ce07093b68b07513149577c209ae7a57ab356b

 src/library/hw_identifier/hw_identifier_facade.cpp

New file
@@ -0,0 +1,77 @@
/*
 * hw_identifier_facade.cpp
 *
 *  Created on: Dec 26, 2019
 *      Author: devel
 */

#include "hw_identifier_facade.hpp"

#include <cstdlib>
#include <stdexcept>

#include "../base/base.h"
#include "../base/logger.h"
#include "../os/cpu_info.hpp"
#include "../os/execution_environment.hpp"
#include "identification_strategy.hpp"
#include "hw_identifier.hpp"

namespace license {
namespace hw_identifier {

using namespace std;

LCC_EVENT_TYPE HwIdentifierFacade::validate_pc_signature(const std::string& str_code) {
   HwIdentifier pc_id(str_code);
   LCC_API_IDENTIFICATION_STRATEGY id_strategy = pc_id.get_identification_strategy();
   LCC_EVENT_TYPE result = IDENTIFIERS_MISMATCH;
   try {
      unique_ptr<IdentificationStrategy> strategy = IdentificationStrategy::get_strategy(id_strategy);
      result = strategy->validate_identifier(pc_id);
   } catch (logic_error& e) {
      LOG_ERROR("Error validating identifier %s: %s", str_code.c_str(), e.what());
   }
   return result;
}

std::string HwIdentifierFacade::generate_user_pc_signature(LCC_API_IDENTIFICATION_STRATEGY strategy) {
   bool use_env_var = false;
   vector<LCC_API_IDENTIFICATION_STRATEGY> strategies_to_try;
   if (strategy == STRATEGY_DEFAULT) {
      char* env_var_value = getenv(LCC_IDENTIFICATION_STRATEGY_ENV_VAR);
      if (env_var_value != nullptr && env_var_value[0] != '\0') {
         int strategy_int = atoi(env_var_value);
         if (strategy_int < 0 || strategy_int > 3) {
            LOG_WARN("unknown " LCC_IDENTIFICATION_STRATEGY_ENV_VAR " %s", env_var_value);
         } else {
            strategy = (LCC_API_IDENTIFICATION_STRATEGY)strategy_int;
            use_env_var = true;
         }
      }
   }

   unique_ptr<IdentificationStrategy> strategy_ptr = IdentificationStrategy::get_strategy(strategy);
   HwIdentifier pc_id;
   FUNCTION_RETURN result = strategy_ptr->identify_pc(pc_id);
   if (result != FUNC_RET_OK) {
      throw logic_error("strategy " + to_string(strategy_ptr->identification_strategy()) + " failed");
   }
   os::ExecutionEnvironment exec;
   os::VIRTUALIZATION virtualization = exec.getVirtualization();
   pc_id.set_virtual_environment(virtualization);
   pc_id.set_use_environment_var(use_env_var);
   if (virtualization != os::NONE) {
      bool isCloud = exec.is_cloud();
      if (isCloud) {
         pc_id.set_cloud_provider(exec.getCloudProvider());
      } else {
         os::CpuInfo cpu;
         pc_id.set_virtualization(cpu.virtualization_details());
      }
   }
   return pc_id.print();
}

}  // namespace hw_identifier
} /* namespace license */