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- #------------------------------------------------------------------------------
- # $File: cafebabe,v 1.24 2018/10/01 23:33:15 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 >1
- >>>28 use mach-o \b
- >>4 belong >2
- >>>48 use mach-o \b
- >>4 belong >3
- >>>68 use mach-o \b
- >>4 belong >4
- >>>88 use mach-o \b
- >>4 belong >5
- >>>108 use mach-o \b
- ### MACH-O END ###
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