some fixes after github codeql-analysis

extensions/ModbusMaster/tests/MBTCPTestServer.cc

@@ -140,7 +140,7 @@ ModbusRTU::mbErrCode MBTCPTestServer::readCoilStatus( ReadCoilMessage& query,
     }
 
     // Фомирование ответа:
-    ModbusData num = 0; // добавленное количество данных
+    size_t num = 0; // добавленное количество данных
     size_t bcnt = numBytes(query.count);
 
     for( ; num < bcnt; num++ )

extensions/tests/test_restapi_uniset.cc

@@ -38,7 +38,7 @@ TEST_CASE("[REST API: conf]", "[restapi][configure]")
 {
     init_test();
 
-	std::string s = shm->apiRequest("/configure/get?2,Input5_S&params=iotype");
+    std::string s = shm->apiRequest("/configure/get?2,Input5_S&params=iotype");
     Poco::JSON::Parser parser;
     auto result = parser.parse(s);
 

src/Communications/Modbus/ModbusTypes.cc

@@ -3167,14 +3167,15 @@ namespace uniset
 		func = fnSetDateTime;
 
 		time_t tm = time(0);
-		struct tm* tms = localtime(&tm);
-		hour     = tms->tm_hour;
-		min     = tms->tm_min;
-		sec     = tms->tm_sec;
-		day     = tms->tm_mday;
-		mon        = tms->tm_mon + 1;
-		year    = tms->tm_year;
-		century = ( tms->tm_year + 1900 >= 2000 ) ? 20 : 19;
+		std::tm tms;
+		gmtime_r(&tm, &tms);
+		hour     = tms.tm_hour;
+		min     = tms.tm_min;
+		sec     = tms.tm_sec;
+		day     = tms.tm_mday;
+		mon     = tms.tm_mon + 1;
+		year    = tms.tm_year;
+		century = ( tms.tm_year + 1900 >= 2000 ) ? 20 : 19;
 	}
 	// -------------------------------------------------------------------------
 	SetDateTimeRetMessage::SetDateTimeRetMessage( const SetDateTimeMessage& query )

src/Core/UniSetTypes.cc

@@ -503,21 +503,23 @@ bool uniset::check_filter( UniXML::iterator& it, const std::string& f_prop, cons
 // ------------------------------------------------------------------------------------------
 string uniset::timeToString(time_t tm, const std::string& brk ) noexcept
 {
-	struct tm* tms = localtime(&tm);
+	std::tm tms;
+	gmtime_r(&tm, &tms);
 	ostringstream time;
-	time << std::setw(2) << std::setfill('0') << tms->tm_hour << brk;
-	time << std::setw(2) << std::setfill('0') << tms->tm_min << brk;
-	time << std::setw(2) << std::setfill('0') << tms->tm_sec;
+	time << std::setw(2) << std::setfill('0') << tms.tm_hour << brk;
+	time << std::setw(2) << std::setfill('0') << tms.tm_min << brk;
+	time << std::setw(2) << std::setfill('0') << tms.tm_sec;
 	return time.str();
 }
 
 string uniset::dateToString(time_t tm, const std::string& brk ) noexcept
 {
-	struct tm* tms = localtime(&tm);
+	std::tm tms;
+	gmtime_r(&tm, &tms);
 	ostringstream date;
-	date << std::setw(4) << std::setfill('0') << tms->tm_year + 1900 << brk;
-	date << std::setw(2) << std::setfill('0') << tms->tm_mon + 1 << brk;
-	date << std::setw(2) << std::setfill('0') << tms->tm_mday;
+	date << std::setw(4) << std::setfill('0') << tms.tm_year + 1900 << brk;
+	date << std::setw(2) << std::setfill('0') << tms.tm_mon + 1 << brk;
+	date << std::setw(2) << std::setfill('0') << tms.tm_mday;
 	return date.str();
 }
 

src/Log/DebugStream.cc

@@ -210,7 +210,8 @@ std::ostream& DebugStream::printDate(Debug::type t, char brk) noexcept
 		uniset::ios_fmt_restorer ifs(*this);
 
 		std::time_t tv = std::chrono::system_clock::to_time_t(std::chrono::system_clock::now());
-		std::tm tms = *std::localtime(&tv);
+		std::tm tms;
+		gmtime_r(&tv, &tms);
 
 #if __GNUC__ >= 5
 		std::ostringstream fmt;
@@ -233,7 +234,8 @@ std::ostream& DebugStream::printTime(Debug::type t, char brk) noexcept
 		uniset::ios_fmt_restorer ifs(*this);
 
 		timespec tv = uniset::now_to_timespec(); // gettimeofday(tv,0);
-		std::tm tms = *std::localtime(&tv.tv_sec);
+		std::tm tms;
+		gmtime_r(&tv.tv_sec, &tms);
 
 #if __GNUC__ >= 5
 		std::ostringstream fmt;
@@ -263,7 +265,8 @@ std::ostream& DebugStream::printDateTime(Debug::type t) noexcept
 		uniset::ios_fmt_restorer ifs(*this);
 
 		timespec tv = uniset::now_to_timespec(); // gettimeofday(tv,0);
-		std::tm tms = *std::localtime(&tv.tv_sec);
+		std::tm tms;
+		gmtime_r(&tv.tv_sec, &tms);
 
 #if __GNUC__ >= 5
 		*this << std::put_time(&tms, "%Od/%Om/%Y %OH:%OM:%OS");