Module: Pliney::MachO

Includes:
LoadCommandConst
Defined in:
lib/pliney/macho.rb

Defined Under Namespace

Modules: LoadCommandConst Classes: CommonDylibCommandReader, CommonEncryptionInfoReader, CommonLCReader, CommonLinkeditDataCommandReader, CommonMachHeaderReader, CommonSectionReader, CommonSegmentReader, DylibStructReader, FatArchReader, FatHeaderReader, LC_CODE_SIGNATURE_Reader, LC_DATA_IN_CODE_Reader, LC_DYLIB_CODE_SIGN_DRS_Reader, LC_ENCRYPTION_INFO_64_Reader, LC_ENCRYPTION_INFO_Reader, LC_FUNCTION_STARTS_Reader, LC_ID_DYLIB_Reader, LC_LINKER_OPTIMIZATION_HINT_Reader, LC_LOAD_DYLIB_Reader, LC_LOAD_WEAK_DYLIB_Reader, LC_REEXPORT_DYLIB_Reader, LC_RPATH_Reader, LC_SEGMENT_64_Reader, LC_SEGMENT_Reader, LC_SEGMENT_SPLIT_INFO_Reader, MachHeader64Reader, MachHeaderReader, Reader, ReaderError, Section64Reader, SectionReader, UndefinedLCReader

Constant Summary collapse

FAT_MAGIC = 
0xCAFEBABE
MACHO_MAGIC32 = 
0xCEFAEDFE
MACHO_MAGIC64 = 
0xCFFAEDFE
LC_REQ_DYLD = 
0x80000000

Constants included from LoadCommandConst

LoadCommandConst::LC_BUILD_VERSION, LoadCommandConst::LC_CODE_SIGNATURE, LoadCommandConst::LC_DATA_IN_CODE, LoadCommandConst::LC_DYLD_ENVIRONMENT, LoadCommandConst::LC_DYLD_INFO, LoadCommandConst::LC_DYLD_INFO_ONLY, LoadCommandConst::LC_DYLIB_CODE_SIGN_DRS, LoadCommandConst::LC_DYSYMTAB, LoadCommandConst::LC_ENCRYPTION_INFO, LoadCommandConst::LC_ENCRYPTION_INFO_64, LoadCommandConst::LC_FUNCTION_STARTS, LoadCommandConst::LC_FVMFILE, LoadCommandConst::LC_IDENT, LoadCommandConst::LC_IDFVMLIB, LoadCommandConst::LC_ID_DYLIB, LoadCommandConst::LC_ID_DYLINKER, LoadCommandConst::LC_LAZY_LOAD_DYLIB, LoadCommandConst::LC_LINKER_OPTIMIZATION_HINT, LoadCommandConst::LC_LINKER_OPTION, LoadCommandConst::LC_LOADFVMLIB, LoadCommandConst::LC_LOAD_DYLIB, LoadCommandConst::LC_LOAD_DYLINKER, LoadCommandConst::LC_LOAD_UPWARD_DYLIB, LoadCommandConst::LC_LOAD_WEAK_DYLIB, LoadCommandConst::LC_MAIN, LoadCommandConst::LC_NOTE, LoadCommandConst::LC_PREBIND_CKSUM, LoadCommandConst::LC_PREBOUND_DYLIB, LoadCommandConst::LC_PREPAGE, LoadCommandConst::LC_REEXPORT_DYLIB, LoadCommandConst::LC_ROUTINES, LoadCommandConst::LC_ROUTINES_64, LoadCommandConst::LC_RPATH, LoadCommandConst::LC_SEGMENT, LoadCommandConst::LC_SEGMENT_64, LoadCommandConst::LC_SEGMENT_SPLIT_INFO, LoadCommandConst::LC_SOURCE_VERSION, LoadCommandConst::LC_SUB_CLIENT, LoadCommandConst::LC_SUB_FRAMEWORK, LoadCommandConst::LC_SUB_LIBRARY, LoadCommandConst::LC_SUB_UMBRELLA, LoadCommandConst::LC_SYMSEG, LoadCommandConst::LC_SYMTAB, LoadCommandConst::LC_THREAD, LoadCommandConst::LC_TWOLEVEL_HINTS, LoadCommandConst::LC_UNIXTHREAD, LoadCommandConst::LC_UUID, LoadCommandConst::LC_VERSION_MIN_IPHONEOS, LoadCommandConst::LC_VERSION_MIN_MACOSX, LoadCommandConst::LC_VERSION_MIN_TVOS, LoadCommandConst::LC_VERSION_MIN_WATCHOS

Class Method Summary collapse

Class Method Details

.is_fat_magic(magicval) ⇒ Object 



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# File 'lib/pliney/macho.rb', line 17

def self.is_fat_magic(magicval)
    return (magicval == FAT_MAGIC)
end

.is_macho32_magic(magicval) ⇒ Object 



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# File 'lib/pliney/macho.rb', line 25

def self.is_macho32_magic(magicval)
    return (magicval == MACHO_MAGIC32)
end

.is_macho64_magic(magicval) ⇒ Object 



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# File 'lib/pliney/macho.rb', line 29

def self.is_macho64_magic(magicval)
    return (magicval == MACHO_MAGIC64)
end

.is_macho_magic(magicval) ⇒ Object 



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# File 'lib/pliney/macho.rb', line 21

def self.is_macho_magic(magicval)
    return (is_macho32_magic(magicval) or is_macho64_magic(magicval))
end

.lcmap ⇒ Object 



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# File 'lib/pliney/macho.rb', line 33

def self.lcmap
    @LCMAP ||= Hash[
        LoadCommandConst.constants.map do |lc|
            [lc, LoadCommandConst.const_get(lc)] 
        end
    ]
end

.read_stream(fh) ⇒ Object 



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# File 'lib/pliney/macho.rb', line 69

def self.read_stream(fh)
    magic = fh.read_uint32
    fh.pos -= 4
    return reader_for_filemagic(magic).parse(fh)
end

.reader_for_filemagic(magic) ⇒ Object 



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# File 'lib/pliney/macho.rb', line 56

def self.reader_for_filemagic(magic)
    case magic
    when FAT_MAGIC
        return FatHeaderReader
    when MACHO_MAGIC32
        return MachHeaderReader
    when MACHO_MAGIC64
        return MachHeader64Reader
    else
        raise(ReaderError, "Unrecognized magic value: 0x%0.8x" % magic)
    end
end

.reader_for_lc(lcnum) ⇒ Object 



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# File 'lib/pliney/macho.rb', line 45

def self.reader_for_lc(lcnum)
    lcsym = lcmap.invert[lcnum]
    if lcsym
        klname = "#{lcsym}_Reader"
        if MachO.const_defined?(klname)
            return MachO.const_get(klname)
        end
    end
    return UndefinedLCReader
end

.resolve_lc(lcnum) ⇒ Object 



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# File 'lib/pliney/macho.rb', line 41

def self.resolve_lc(lcnum)
    lcmap.invert[lcnum]
end