def __init__(self, filename=None):
self.header = MachOHeader()
self.segments = []
self.commands = []
if filename is not None:
with open(filename, "rb") as macho_file:
self.load_file(macho_file)
def __init__(self, filename=None):
self.header = MachOHeader()
self.segments = []
self.commands = []
if filename is not None:
with open(filename, "rb") as macho_file:
self.load_file(macho_file)
def load_file(self, macho_file):
self.header = MachOHeader(macho_file)
self.load_commands(macho_file)
class MachO(object):
"""
Represent a Mach-O file
"""
header = None
segments = None
commands = None
def __init__(self, filename=None):
self.header = MachOHeader()
self.segments = []
self.commands = []
if filename is not None:
with open(filename, "rb") as macho_file:
self.load_file(macho_file)
def load_file(self, macho_file):
self.header = MachOHeader(macho_file)
self.load_commands(macho_file)
def write_file(self, filename):
with open(filename, "wb") as macho_file:
self.header.write(macho_file)
for segment in self.segments:
segment.write(macho_file)
for command in self.commands:
command.write(macho_file)
def load_commands(self, macho_file):
assert macho_file.tell() == 28 or macho_file.tell() == 32
for i in range(self.header.ncmds):
cmd, cmdsize = unpack('<II', macho_file.read(4*2))
if cmd == LC_SEGMENT:
self.segments.append(MachOSegment(macho_file))
elif cmd == LC_SEGMENT_64:
self.segments.append(MachOSegment(macho_file, arch=64))
elif cmd in [LC_DYLD_INFO_ONLY, LC_DYLD_INFO]:
self.commands.append(MachODYLDInfoCommand(macho_file, cmd))
elif cmd == LC_SYMTAB:
self.commands.append(MachOSymtabCommand(macho_file, cmd, is_64=self.header.is_64()))
elif cmd == LC_DYSYMTAB:
self.commands.append(MachODYSymtabCommand(macho_file, cmd))
elif cmd in [LC_LOAD_DYLINKER, LC_DYLD_ENVIRONMENT]:
self.commands.append(MachODYLinkerCommand(macho_file, cmd, is_64=self.header.is_64()))
elif cmd == LC_UUID:
self.commands.append(MachOUUIDCommand(macho_file, cmd))
elif cmd in [LC_VERSION_MIN_MACOSX, LC_VERSION_MIN_IPHONEOS]:
self.commands.append(MachOVersionMinCommand(macho_file, cmd))
elif cmd in [LC_UNIXTHREAD, LC_THREAD]:
self.commands.append(MachOThreadCommand(macho_file, cmd))
elif cmd == LC_MAIN:
self.commands.append(MachOMainCommand(macho_file, cmd))
elif cmd in [LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB, LC_REEXPORT_DYLIB, LC_ID_DYLIB]:
self.commands.append(MachOLoadDYLibCommand(macho_file, cmd))
elif cmd in [LC_CODE_SIGNATURE, LC_SEGMENT_SPLIT_INFO, LC_FUNCTION_STARTS, LC_DATA_IN_CODE, LC_DYLIB_CODE_SIGN_DRS]:
self.commands.append(MachOLinkeditDataCommand(macho_file, cmd))
elif cmd == LC_RPATH:
self.commands.append(MachORPathCommand(macho_file, cmd))
elif cmd == LC_SOURCE_VERSION:
self.commands.append(MachOSourceVersionCommand(macho_file, cmd))
elif cmd == LC_ENCRYPTION_INFO:
self.commands.append(MachOEncryptionInfoCommand(macho_file, cmd))
else:
raise Exception("unknow load command : 0x%x - please report it!" % cmd)
def load_file(self, macho_file):
self.header = MachOHeader(macho_file)
self.load_commands(macho_file)
class MachO(object):
"""
Represent a Mach-O file
"""
header = None
segments = None
commands = None
def __init__(self, filename=None):
self.header = MachOHeader()
self.segments = []
self.commands = []
if filename is not None:
with open(filename, "rb") as macho_file:
self.load_file(macho_file)
def load_file(self, macho_file):
self.header = MachOHeader(macho_file)
self.load_commands(macho_file)
def write_file(self, filename):
with open(filename, "wb") as macho_file:
self.header.write(macho_file)
for segment in self.segments:
segment.write(macho_file)
for command in self.commands:
command.write(macho_file)
def load_commands(self, macho_file):
assert macho_file.tell() == 28 or macho_file.tell() == 32
for i in range(self.header.ncmds):
cmd, cmdsize = unpack('<II', macho_file.read(4 * 2))
if cmd == LC_SEGMENT:
self.segments.append(MachOSegment(macho_file))
elif cmd == LC_SEGMENT_64:
self.segments.append(MachOSegment(macho_file, arch=64))
elif cmd in [LC_DYLD_INFO_ONLY, LC_DYLD_INFO]:
self.commands.append(MachODYLDInfoCommand(macho_file, cmd))
elif cmd == LC_SYMTAB:
self.commands.append(
MachOSymtabCommand(macho_file,
cmd,
is_64=self.header.is_64()))
elif cmd == LC_DYSYMTAB:
self.commands.append(MachODYSymtabCommand(macho_file, cmd))
elif cmd in [LC_LOAD_DYLINKER, LC_DYLD_ENVIRONMENT]:
self.commands.append(
MachODYLinkerCommand(macho_file,
cmd,
is_64=self.header.is_64()))
elif cmd == LC_UUID:
self.commands.append(MachOUUIDCommand(macho_file, cmd))
elif cmd in [LC_VERSION_MIN_MACOSX, LC_VERSION_MIN_IPHONEOS]:
self.commands.append(MachOVersionMinCommand(macho_file, cmd))
elif cmd in [LC_UNIXTHREAD, LC_THREAD]:
self.commands.append(MachOThreadCommand(macho_file, cmd))
elif cmd == LC_MAIN:
self.commands.append(MachOMainCommand(macho_file, cmd))
elif cmd in [
LC_LOAD_DYLIB, LC_LOAD_WEAK_DYLIB, LC_REEXPORT_DYLIB,
LC_ID_DYLIB
]:
self.commands.append(MachOLoadDYLibCommand(macho_file, cmd))
elif cmd in [
LC_CODE_SIGNATURE, LC_SEGMENT_SPLIT_INFO,
LC_FUNCTION_STARTS, LC_DATA_IN_CODE, LC_DYLIB_CODE_SIGN_DRS
]:
self.commands.append(MachOLinkeditDataCommand(macho_file, cmd))
elif cmd == LC_RPATH:
self.commands.append(MachORPathCommand(macho_file, cmd))
elif cmd == LC_SOURCE_VERSION:
self.commands.append(MachOSourceVersionCommand(
macho_file, cmd))
elif cmd == LC_ENCRYPTION_INFO:
self.commands.append(
MachOEncryptionInfoCommand(macho_file, cmd))
else:
raise Exception(
"unknow load command : 0x%x - please report it!" % cmd)