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gcontini

2020-03-21 b939d1a0b6b375ea5bae54d83a1cb89eb888c75a

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/*
 * 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_HW_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_HW_IDENTIFICATION_STRATEGY strategy) {
    bool use_env_var = false;
    vector<LCC_API_HW_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_HW_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->generate_pc_id(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 */