file/magic/Magdir/cafebabe

#------------------------------------------------------------------------------
# $File: cafebabe,v 1.16 2014/04/30 21:41:02 christos Exp $
# Cafe Babes unite!
#
# Since Java bytecode and Mach-O universal binaries have the same magic number,
# the test must be performed in the same "magic" sequence to get both right.
# The long at offset 4 in a Mach-O universal binary tells the number of
# architectures; the short at offset 4 in a Java bytecode file is the JVM minor
# version and the short at offset 6 is the JVM major version.  Since there are only 
# only 18 labeled Mach-O architectures at current, and the first released 
# Java class format was version 43.0, we can safely choose any number
# between 18 and 39 to test the number of architectures against
# (and use as a hack). Let's not use 18, because the Mach-O people
# might add another one or two as time goes by...
#
### JAVA START ###
0	belong		0xcafebabe
>4	belong		>30		compiled Java class data,
!:mime	application/x-java-applet
>>6	beshort		x	        version %d.
>>4	beshort		x       	\b%d
# Which is which?
#>>4	belong		0x032d		(Java 1.0)
#>>4	belong		0x032d		(Java 1.1)
>>4	belong		0x002e		(Java 1.2)
>>4	belong		0x002f		(Java 1.3)
>>4	belong		0x0030		(Java 1.4)
>>4	belong		0x0031		(Java 1.5)
>>4	belong		0x0032		(Java 1.6)

0	belong		0xcafed00d	JAR compressed with pack200,
>5	byte		x		version %d.
>4	byte		x		\b%d
!:mime	application/x-java-pack200


0	belong		0xcafed00d	JAR compressed with pack200,
>5	byte		x		version %d.
>4	byte		x		\b%d
!:mime	application/x-java-pack200

### JAVA END ###
### MACH-O START ###

0	name		mach-o		\b [
>0	use		mach-o-cpu	\b
>(8.L)	indirect			\b: 
>0	belong		x		\b]

0	belong		0xcafebabe
>4	belong		1		Mach-O universal binary with 1 architecture:
>>8	use		mach-o		\b
>4	belong		>1
>>4	belong		<20		Mach-O universal binary with %d architectures:
>>>8	use		mach-o		\b
>>>28	use		mach-o		\b
>>4	belong		>2
>>>48	use		mach-o		\b
>>4	belong		>3
>>>68	use		mach-o		\b

### MACH-O END ###