def _get_arch(self, macho, arch_offset, arch_size):
arch = {
'macho': macho,
'arch_offset': arch_offset,
'arch_size': arch_size
}
arch['cmds'] = {}
for cmd in macho.commands:
name = cmd.cmd
arch['cmds'][name] = cmd
codesig_data = None
if 'LC_CODE_SIGNATURE' in arch['cmds']:
arch['lc_codesig'] = arch['cmds']['LC_CODE_SIGNATURE']
codesig_offset = arch['macho'].macho_start + arch[
'lc_codesig'].data.dataoff
self.f.seek(codesig_offset)
codesig_data = self.f.read(arch['lc_codesig'].data.datasize)
# log.debug("codesig len: {0}".format(len(codesig_data)))
else:
log.info("signing from scratch!")
self.sign_from_scratch = True
entitlements_file = self.bundle.get_entitlements_path(
) #'/path/to/some/entitlements.plist'
# Stage 1: Fake signature
fake_codesig_data = make_signature(
macho, arch_offset, arch_size, arch['cmds'], self.f,
entitlements_file, 0, self.signer,
self.bundle.get_info_prop('CFBundleIdentifier'))
macho.ncmds -= 1
macho.commands = macho.commands[:-1]
# Get the length
fake_codesig = Codesig(self, fake_codesig_data)
fake_codesig.set_signature(self.signer)
fake_codesig.update_offsets()
fake_codesig_length = len(fake_codesig.build_data())
log.debug("fake codesig length: {}".format(fake_codesig_length))
# stage 2: real signature
codesig_data = make_signature(
macho, arch_offset, arch_size, arch['cmds'], self.f,
entitlements_file, fake_codesig_length, self.signer,
self.bundle.get_info_prop('CFBundleIdentifier'))
arch['lc_codesig'] = arch['cmds']['LC_CODE_SIGNATURE']
arch['codesig'] = Codesig(self, codesig_data)
arch['codesig_len'] = len(codesig_data)
if self.sign_from_scratch:
arch['codesig_data'] = codesig_data
return arch
def _get_arch(self, macho, macho_end):
arch = {'macho': macho, 'macho_end': macho_end}
arch['cmds'] = {}
for cmd in macho.commands:
name = cmd.cmd
arch['cmds'][name] = cmd
if 'LC_CODE_SIGNATURE' in arch['cmds']:
arch['lc_codesig'] = arch['cmds']['LC_CODE_SIGNATURE']
codesig_offset = arch['macho'].macho_start + arch[
'lc_codesig'].data.dataoff
self.f.seek(codesig_offset)
codesig_data = self.f.read(arch['lc_codesig'].data.datasize)
# log.debug("codesig len: {0}".format(len(codesig_data)))
else:
log.info("signing from scratch!")
entitlements_file = '/Users/neilk/projects/ios-apps/unsigned_entitlements.plist'
codesig_data = make_signature(macho, macho_end, arch['cmds'],
self.f, entitlements_file)
arch['lc_codesig'] = arch['cmds']['LC_CODE_SIGNATURE']
arch['codesig'] = Codesig(self, codesig_data)
arch['codesig_len'] = len(codesig_data)
return arch
def _get_arch(self, macho, macho_end):
arch = {'macho': macho, 'macho_end': macho_end}
arch['cmds'] = {}
for cmd in macho.commands:
name = cmd.cmd
arch['cmds'][name] = cmd
if 'LC_CODE_SIGNATURE' in arch['cmds']:
arch['lc_codesig'] = arch['cmds']['LC_CODE_SIGNATURE']
codesig_offset = arch['macho'].macho_start + arch[
'lc_codesig'].data.dataoff
self.f.seek(codesig_offset)
codesig_data = self.f.read(arch['lc_codesig'].data.datasize)
log.debug("codesig len: {0}".format(len(codesig_data)))
else:
raise Exception('At this time, isign cannot sign an unsigned app.')
# log.info("signing from scratch!")
# entitlements_file = '/path/to/some/entitlements.plist'
# codesig_data = make_signature(macho, macho_end, arch['cmds'], self.f, entitlements_file)
# arch['lc_codesig'] = arch['cmds']['LC_CODE_SIGNATURE']
arch['codesig'] = Codesig(self, codesig_data)
arch['codesig_len'] = len(codesig_data)
return arch
def _get_arch(self, macho, macho_end):
arch = {'macho': macho, 'macho_end': macho_end}
arch['cmds'] = {}
for cmd in macho.commands:
name = cmd.cmd
arch['cmds'][name] = cmd
if 'LC_CODE_SIGNATURE' in arch['cmds']:
arch['lc_codesig'] = arch['cmds']['LC_CODE_SIGNATURE']
codesig_offset = arch['macho'].macho_start + arch['lc_codesig'].data.dataoff
self.f.seek(codesig_offset)
codesig_data = self.f.read(arch['lc_codesig'].data.datasize)
arch['codesig_len'] = len(codesig_data)
log.debug("codesig len: {0}".format(len(codesig_data)))
else:
raise Exception("signing without existing codesig is not implemented")
# TODO: this doesn't actually work :(
# see the makesig.py library, this was begun but not finished
arch['codesig'] = Codesig(self, codesig_data)
return arch