magicnumbers

Simple checker if file extension and its metadata are consistent. Currently supprts only JPG, GIF, and plain text files. You can add your own magic types using addMagicType method in MagicTypes class.

Build

• Compile application into jar file:

gradle jar

• Then use it as follows:

java -jar magicnumbers-1.0.jar /path/to/file/to/check.jpg

Use in your code

Use FileLoader helper class with static loadFile to load a file into byte array, then find file type:

MagicTypes magicTypes = new MagicTypes();
File file = new File(path);
byte[] loadedFileBytes = FileLoader.loadFile(file);
FileType foundType = magicTypes.findTypeByBytes(loadedFileBytes);

To Do

• implement loading `magic.gz' magic types library