<?php

	/* [1] Launches external script
	=========================================================*/
	function syscall($dependency=null){

		// cut in words
		$words = explode(' ', $dependency);

		/* (1) Check file */
		if( is_null($dependency) || !file_exists($words[0]) )
			return false;

		/* (2) Call and catch output */
		$out = shell_exec("$dependency 2> /dev/null;");

		/* (3) Clean output */
		$out = preg_replace('/^\s+/', '', $out);
		$out = preg_replace('/\s+$/', '', $out);

		/* (4) Manage result */
		if( is_numeric($out) && $out === "0" )
			return true;
		elseif( is_numeric($out) && $out === "127" )
			return false;
		else
			return $out;
	}

	/* [2] Log management
	=========================================================*/
	function slog($message="unknown error", $feature="main", $flag="daemon"){

		file_put_contents(LOG_DIR."/$flag.log", time()." [$feature] $message\n", FILE_APPEND);

	}

?>