Esempio n. 1
0
        /// <summary>
        /// Identifying method for JFIF/JPEG/JPG
        /// </summary>
        /// <param name="filename">fiel name</param>
        /// <returns>identified sig</returns>
        public static FASignature IdentifyJPEG(string filename)
        {
            string buffer = File.ReadAllText(filename);
            int    index  = BoyerMooreString.IndexOf(buffer, "JFIF");//jfif files have a section with an ASCII JFIF\0 that will identify it.

            //most JPGs conform to the JFIF standard
            if (index != -1)
            {
                Console.WriteLine(index);
                return(new FASignature("FF D8 FF E0", "JFIF", 0, "JPEG File Interchange Format is an image file format standard"));
            }
            return(new FASignature("FF D8 FF E0", "JPEG", 0, "JPEG/JPG Image Format"));
        }
Esempio n. 2
0
        /// <summary>
        /// primitive scanner using boyer moore to identify something.
        /// </summary>
        /// <param name="filename"></param>
        /// <returns></returns>
        private static bool TestTSQL(string filename)
        {
            string[] tsql_keywords = { "SELECT", "FROM", "WHERE", "ORDER BY", "GROUP BY", "HAVING" }; //simple example of keywords
            string   text = File.ReadAllText(filename);
            int      count = 0, threshold = 6;

            foreach (string keyword in tsql_keywords)
            {
                if (BoyerMooreString.IndexOf(text, keyword) > -1)
                {
                    count++;
                }
            }
            if (count > threshold)
            {
                Console.WriteLine("Possible TSQL File!");
                return(true);
            }
            return(false);
        }