xref: /freebsd/contrib/file/magic/Magdir/cafebabe (revision 298f5fdc242b760e70cd3494e3a4f1f50b20664d)
1
2#------------------------------------------------------------------------------
3# $File: cafebabe,v 1.16 2014/04/30 21:41:02 christos Exp $
4# Cafe Babes unite!
5#
6# Since Java bytecode and Mach-O universal binaries have the same magic number,
7# the test must be performed in the same "magic" sequence to get both right.
8# The long at offset 4 in a Mach-O universal binary tells the number of
9# architectures; the short at offset 4 in a Java bytecode file is the JVM minor
10# version and the short at offset 6 is the JVM major version.  Since there are only
11# only 18 labeled Mach-O architectures at current, and the first released
12# Java class format was version 43.0, we can safely choose any number
13# between 18 and 39 to test the number of architectures against
14# (and use as a hack). Let's not use 18, because the Mach-O people
15# might add another one or two as time goes by...
16#
17### JAVA START ###
180	belong		0xcafebabe
19>4	belong		>30		compiled Java class data,
20!:mime	application/x-java-applet
21>>6	beshort		x	        version %d.
22>>4	beshort		x       	\b%d
23# Which is which?
24#>>4	belong		0x032d		(Java 1.0)
25#>>4	belong		0x032d		(Java 1.1)
26>>4	belong		0x002e		(Java 1.2)
27>>4	belong		0x002f		(Java 1.3)
28>>4	belong		0x0030		(Java 1.4)
29>>4	belong		0x0031		(Java 1.5)
30>>4	belong		0x0032		(Java 1.6)
31
320	belong		0xcafed00d	JAR compressed with pack200,
33>5	byte		x		version %d.
34>4	byte		x		\b%d
35!:mime	application/x-java-pack200
36
37
380	belong		0xcafed00d	JAR compressed with pack200,
39>5	byte		x		version %d.
40>4	byte		x		\b%d
41!:mime	application/x-java-pack200
42
43### JAVA END ###
44### MACH-O START ###
45
460	name		mach-o		\b [
47>0	use		mach-o-cpu	\b
48>&(8.L)	indirect			\b:
49>0	belong		x		\b]
50
510	belong		0xcafebabe
52>4	belong		1		Mach-O universal binary with 1 architecture:
53>>8	use		mach-o		\b
54>4	belong		>1
55>>4	belong		<20		Mach-O universal binary with %d architectures:
56>>>8	use		mach-o		\b
57>>>28	use		mach-o		\b
58>>4	belong		>2
59>>>48	use		mach-o		\b
60>>4	belong		>3
61>>>68	use		mach-o		\b
62
63### MACH-O END ###
64