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#------------------------------------------------------------------------------
# $File: cafebabe,v 1.23 2017/05/25 20:07:23 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)
>>4 belong 0x0033 (Java 1.7)
>>4 belong 0x0034 (Java 1.8)
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 x \b:
>0 belong x \b]
0 belong 0xcafebabe
>4 belong 1 Mach-O universal binary with 1 architecture:
!:mime application/x-mach-binary
>>8 use mach-o \b
>4 belong >1
>>4 belong <20 Mach-O universal binary with %d architectures:
!:mime application/x-mach-binary
>>>8 use mach-o \b
>>4 belong 2
>>>28 use mach-o \b
>>4 belong 3
>>>48 use mach-o \b
>>4 belong 4
>>>68 use mach-o \b
>>4 belong 5
>>>88 use mach-o \b
>>4 belong 6
>>>108 use mach-o \b
### MACH-O END ###
|
