/*
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* LicenseVerifier.cpp
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*
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* Created on: Nov 17, 2019
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* Author: GC
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*/
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#include <cmath>
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#include <algorithm>
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#include <licensecc_properties.h>
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#include "license_verifier.hpp"
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#include "../pc_identifier/pc_identifier_facade.hpp"
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#include "../os/signature_verifier.h"
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#include "../base/StringUtils.h"
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namespace license {
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using namespace std;
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LicenseVerifier::LicenseVerifier(EventRegistry& er) : m_event_registry(er) {}
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LicenseVerifier::~LicenseVerifier() {}
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FUNCTION_RETURN LicenseVerifier::verify_signature(const FullLicenseInfo& licInfo) {
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const string licInfoData(licInfo.printForSign());
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FUNCTION_RETURN ret = license::verify_signature(licInfoData, licInfo.license_signature);
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if (ret == FUNC_RET_OK) {
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m_event_registry.addEvent(SIGNATURE_VERIFIED, licInfo.source);
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} else {
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m_event_registry.addEvent(LICENSE_CORRUPTED, licInfo.source);
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}
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return ret;
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}
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// TODO: split in different classes
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FUNCTION_RETURN LicenseVerifier::verify_limits(const FullLicenseInfo& licInfo) {
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bool is_valid = LCC_VERIFY_MAGIC(licInfo);
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if (!is_valid) {
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m_event_registry.addEvent(LICENSE_CORRUPTED, licInfo.source.c_str());
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}
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const time_t now = time(nullptr);
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auto expiry = licInfo.m_limits.find(PARAM_EXPIRY_DATE);
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if (is_valid && expiry != licInfo.m_limits.end()) {
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if (seconds_from_epoch(expiry->second) < now) {
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m_event_registry.addEvent(PRODUCT_EXPIRED, licInfo.source.c_str(), ("Expired " + expiry->second).c_str());
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is_valid = false;
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}
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}
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const auto start_date = licInfo.m_limits.find(PARAM_BEGIN_DATE);
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if (is_valid && start_date != licInfo.m_limits.end()) {
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if (seconds_from_epoch(start_date->second) > now) {
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m_event_registry.addEvent(PRODUCT_EXPIRED, licInfo.source.c_str(),
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("Valid from " + start_date->second).c_str());
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is_valid = false;
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}
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}
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const auto client_sig = licInfo.m_limits.find(PARAM_CLIENT_SIGNATURE);
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if (is_valid && client_sig != licInfo.m_limits.end()) {
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const LCC_EVENT_TYPE event = PcIdentifierFacade::validate_pc_signature(client_sig->second);
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m_event_registry.addEvent(event, licInfo.source);
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is_valid = is_valid && (event == LICENSE_OK);
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}
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return is_valid ? FUNC_RET_OK : FUNC_RET_ERROR;
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}
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LicenseInfo LicenseVerifier::toLicenseInfo(const FullLicenseInfo& fullLicInfo) const {
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LicenseInfo info;
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info.license_type = LOCAL;
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const auto expiry = fullLicInfo.m_limits.find(PARAM_EXPIRY_DATE);
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if (expiry != fullLicInfo.m_limits.end()) {
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strncpy(info.expiry_date, expiry->second.c_str(), sizeof(info.expiry_date));
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info.has_expiry = true;
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const double secs = difftime(seconds_from_epoch(expiry->second), time(nullptr));
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info.days_left = max((int)round(secs / (60 * 60 * 24)), 0);
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} else {
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info.has_expiry = false;
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info.days_left = 9999;
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info.expiry_date[0] = '\0';
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}
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const auto start_date = fullLicInfo.m_limits.find(PARAM_BEGIN_DATE);
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if (start_date != fullLicInfo.m_limits.end()) {
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}
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const auto client_sig = fullLicInfo.m_limits.find(PARAM_CLIENT_SIGNATURE);
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info.linked_to_pc = (client_sig != fullLicInfo.m_limits.end());
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const auto proprietary_data = fullLicInfo.m_limits.find(PARAM_EXTRA_DATA);
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if (proprietary_data != fullLicInfo.m_limits.end()) {
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strncpy(info.proprietary_data, proprietary_data->second.c_str(), LCC_API_PROPRIETARY_DATA_SIZE);
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}
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return info;
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}
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} /* namespace license */
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