/usr/lib/python2.7/dist-packages/keyring/backends/_OS_X_API.py is in python-keyring 10.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import ctypes
from ctypes import c_void_p, c_uint16, c_uint32, c_int32, c_char_p, POINTER
sec_keychain_ref = sec_keychain_item_ref = c_void_p
OS_status = c_int32
class error:
item_not_found = -25300
fw = '/System/Library/Frameworks/{name}.framework/Versions/A/{name}'.format
_sec = ctypes.CDLL(fw(name='Security'))
_core = ctypes.CDLL(fw(name='CoreServices'))
SecKeychainOpen = _sec.SecKeychainOpen
SecKeychainOpen.argtypes = (
c_char_p,
POINTER(sec_keychain_ref),
)
SecKeychainOpen.restype = OS_status
SecKeychainCopyDefault = _sec.SecKeychainCopyDefault
SecKeychainCopyDefault.argtypes = POINTER(sec_keychain_ref),
SecKeychainCopyDefault.restype = OS_status
class Error(Exception):
@classmethod
def raise_for_status(cls, status, msg):
if status == 0:
return
raise cls(status, msg)
class NotFound(Error):
@classmethod
def raise_for_status(cls, status, msg):
if status == error.item_not_found:
raise cls(status, msg)
Error.raise_for_status(status, msg)
@contextlib.contextmanager
def open(name):
ref = sec_keychain_ref()
if name is None:
status = SecKeychainCopyDefault(ref)
msg = "Unable to open default keychain"
else:
status = SecKeychainOpen(name.encode('utf-8'), ref)
msg = "Unable to open keychain {name}".format(**locals())
Error.raise_for_status(status, msg)
try:
yield ref
finally:
_core.CFRelease(ref)
SecKeychainFindGenericPassword = _sec.SecKeychainFindGenericPassword
SecKeychainFindGenericPassword.argtypes = (
sec_keychain_ref,
c_uint32,
c_char_p,
c_uint32,
c_char_p,
POINTER(c_uint32), # passwordLength
POINTER(c_void_p), # passwordData
POINTER(sec_keychain_item_ref), # itemRef
)
SecKeychainFindGenericPassword.restype = OS_status
def find_generic_password(kc_name, service, username):
username = username.encode('utf-8')
service = service.encode('utf-8')
with open(kc_name) as keychain:
length = c_uint32()
data = c_void_p()
status = SecKeychainFindGenericPassword(
keychain,
len(service),
service,
len(username),
username,
length,
data,
None,
)
msg = "Can't fetch password from system"
NotFound.raise_for_status(status, msg)
password = ctypes.create_string_buffer(length.value)
ctypes.memmove(password, data.value, length.value)
SecKeychainItemFreeContent(None, data)
return password.raw.decode('utf-8')
SecKeychainFindInternetPassword = _sec.SecKeychainFindInternetPassword
SecKeychainFindInternetPassword.argtypes = (
sec_keychain_ref, # keychainOrArray
c_uint32, # serverNameLength
c_char_p, # serverName
c_uint32, # securityDomainLength
c_char_p, # securityDomain
c_uint32, # accountNameLength
c_char_p, # accountName
c_uint32, # pathLength
c_char_p, # path
c_uint16, # port
c_void_p, # SecProtocolType protocol,
c_void_p, # SecAuthenticationType authenticationType,
POINTER(c_uint32), # passwordLength
POINTER(c_void_p), # passwordData
POINTER(sec_keychain_item_ref), # itemRef
)
SecKeychainFindInternetPassword.restype = OS_status
SecKeychainAddGenericPassword = _sec.SecKeychainAddGenericPassword
SecKeychainAddGenericPassword.argtypes = (
sec_keychain_ref,
c_uint32,
c_char_p,
c_uint32,
c_char_p,
c_uint32,
c_char_p,
POINTER(sec_keychain_item_ref),
)
SecKeychainAddGenericPassword.restype = OS_status
def set_generic_password(name, service, username, password):
username = username.encode('utf-8')
service = service.encode('utf-8')
password = password.encode('utf-8')
with open(name) as keychain:
item = sec_keychain_item_ref()
status = SecKeychainFindGenericPassword(
keychain,
len(service), service,
len(username), username, None,
None, item)
if status:
if status == error.item_not_found:
status = SecKeychainAddGenericPassword(
keychain,
len(service), service,
len(username), username,
len(password), password, None)
else:
status = SecKeychainItemModifyAttributesAndData(
item, None, len(password), password)
_core.CFRelease(item)
NotFound.raise_for_status(status, "Unable to set password")
SecKeychainItemModifyAttributesAndData = _sec.SecKeychainItemModifyAttributesAndData
SecKeychainItemModifyAttributesAndData.argtypes = (
sec_keychain_item_ref, c_void_p, c_uint32, c_void_p,
)
SecKeychainItemModifyAttributesAndData.restype = OS_status
SecKeychainItemFreeContent = _sec.SecKeychainItemFreeContent
SecKeychainItemFreeContent.argtypes = (
c_void_p, c_void_p,
)
SecKeychainItemFreeContent.restype = OS_status
SecKeychainItemDelete = _sec.SecKeychainItemDelete
SecKeychainItemDelete.argtypes = sec_keychain_item_ref,
SecKeychainItemDelete.restype = OS_status
def delete_generic_password(name, service, username):
username = username.encode('utf-8')
service = service.encode('utf-8')
with open(name) as keychain:
length = c_uint32()
data = c_void_p()
item = sec_keychain_item_ref()
status = SecKeychainFindGenericPassword(
keychain,
len(service),
service,
len(username),
username,
length,
data,
item,
)
Error.raise_for_status(status, "Unable to delete password")
SecKeychainItemDelete(item)
_core.CFRelease(item)
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