Update prebuilt Clang to r416183b from Android.
https://android.googlesource.com/platform/prebuilts/clang/host/
linux-x86/+/06a71ddac05c22edb2d10b590e1769b3f8619bef
clang 12.0.5 (based on r416183b) from build 7284624.
Change-Id: I277a316abcf47307562d8b748b84870f31a72866
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/linux-x64/clang/python3/lib/python3.9/uuid.py b/linux-x64/clang/python3/lib/python3.9/uuid.py
new file mode 100644
index 0000000..5ae0a3e
--- /dev/null
+++ b/linux-x64/clang/python3/lib/python3.9/uuid.py
@@ -0,0 +1,728 @@
+r"""UUID objects (universally unique identifiers) according to RFC 4122.
+
+This module provides immutable UUID objects (class UUID) and the functions
+uuid1(), uuid3(), uuid4(), uuid5() for generating version 1, 3, 4, and 5
+UUIDs as specified in RFC 4122.
+
+If all you want is a unique ID, you should probably call uuid1() or uuid4().
+Note that uuid1() may compromise privacy since it creates a UUID containing
+the computer's network address. uuid4() creates a random UUID.
+
+Typical usage:
+
+ >>> import uuid
+
+ # make a UUID based on the host ID and current time
+ >>> uuid.uuid1() # doctest: +SKIP
+ UUID('a8098c1a-f86e-11da-bd1a-00112444be1e')
+
+ # make a UUID using an MD5 hash of a namespace UUID and a name
+ >>> uuid.uuid3(uuid.NAMESPACE_DNS, 'python.org')
+ UUID('6fa459ea-ee8a-3ca4-894e-db77e160355e')
+
+ # make a random UUID
+ >>> uuid.uuid4() # doctest: +SKIP
+ UUID('16fd2706-8baf-433b-82eb-8c7fada847da')
+
+ # make a UUID using a SHA-1 hash of a namespace UUID and a name
+ >>> uuid.uuid5(uuid.NAMESPACE_DNS, 'python.org')
+ UUID('886313e1-3b8a-5372-9b90-0c9aee199e5d')
+
+ # make a UUID from a string of hex digits (braces and hyphens ignored)
+ >>> x = uuid.UUID('{00010203-0405-0607-0809-0a0b0c0d0e0f}')
+
+ # convert a UUID to a string of hex digits in standard form
+ >>> str(x)
+ '00010203-0405-0607-0809-0a0b0c0d0e0f'
+
+ # get the raw 16 bytes of the UUID
+ >>> x.bytes
+ b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f'
+
+ # make a UUID from a 16-byte string
+ >>> uuid.UUID(bytes=x.bytes)
+ UUID('00010203-0405-0607-0809-0a0b0c0d0e0f')
+"""
+
+import os
+import sys
+
+from enum import Enum
+
+
+__author__ = 'Ka-Ping Yee <ping@zesty.ca>'
+
+# The recognized platforms - known behaviors
+if sys.platform in ('win32', 'darwin'):
+ _AIX = _LINUX = False
+else:
+ import platform
+ _platform_system = platform.system()
+ _AIX = _platform_system == 'AIX'
+ _LINUX = _platform_system == 'Linux'
+
+_MAC_DELIM = b':'
+_MAC_OMITS_LEADING_ZEROES = False
+if _AIX:
+ _MAC_DELIM = b'.'
+ _MAC_OMITS_LEADING_ZEROES = True
+
+RESERVED_NCS, RFC_4122, RESERVED_MICROSOFT, RESERVED_FUTURE = [
+ 'reserved for NCS compatibility', 'specified in RFC 4122',
+ 'reserved for Microsoft compatibility', 'reserved for future definition']
+
+int_ = int # The built-in int type
+bytes_ = bytes # The built-in bytes type
+
+
+class SafeUUID(Enum):
+ safe = 0
+ unsafe = -1
+ unknown = None
+
+
+class UUID:
+ """Instances of the UUID class represent UUIDs as specified in RFC 4122.
+ UUID objects are immutable, hashable, and usable as dictionary keys.
+ Converting a UUID to a string with str() yields something in the form
+ '12345678-1234-1234-1234-123456789abc'. The UUID constructor accepts
+ five possible forms: a similar string of hexadecimal digits, or a tuple
+ of six integer fields (with 32-bit, 16-bit, 16-bit, 8-bit, 8-bit, and
+ 48-bit values respectively) as an argument named 'fields', or a string
+ of 16 bytes (with all the integer fields in big-endian order) as an
+ argument named 'bytes', or a string of 16 bytes (with the first three
+ fields in little-endian order) as an argument named 'bytes_le', or a
+ single 128-bit integer as an argument named 'int'.
+
+ UUIDs have these read-only attributes:
+
+ bytes the UUID as a 16-byte string (containing the six
+ integer fields in big-endian byte order)
+
+ bytes_le the UUID as a 16-byte string (with time_low, time_mid,
+ and time_hi_version in little-endian byte order)
+
+ fields a tuple of the six integer fields of the UUID,
+ which are also available as six individual attributes
+ and two derived attributes:
+
+ time_low the first 32 bits of the UUID
+ time_mid the next 16 bits of the UUID
+ time_hi_version the next 16 bits of the UUID
+ clock_seq_hi_variant the next 8 bits of the UUID
+ clock_seq_low the next 8 bits of the UUID
+ node the last 48 bits of the UUID
+
+ time the 60-bit timestamp
+ clock_seq the 14-bit sequence number
+
+ hex the UUID as a 32-character hexadecimal string
+
+ int the UUID as a 128-bit integer
+
+ urn the UUID as a URN as specified in RFC 4122
+
+ variant the UUID variant (one of the constants RESERVED_NCS,
+ RFC_4122, RESERVED_MICROSOFT, or RESERVED_FUTURE)
+
+ version the UUID version number (1 through 5, meaningful only
+ when the variant is RFC_4122)
+
+ is_safe An enum indicating whether the UUID has been generated in
+ a way that is safe for multiprocessing applications, via
+ uuid_generate_time_safe(3).
+ """
+
+ __slots__ = ('int', 'is_safe', '__weakref__')
+
+ def __init__(self, hex=None, bytes=None, bytes_le=None, fields=None,
+ int=None, version=None,
+ *, is_safe=SafeUUID.unknown):
+ r"""Create a UUID from either a string of 32 hexadecimal digits,
+ a string of 16 bytes as the 'bytes' argument, a string of 16 bytes
+ in little-endian order as the 'bytes_le' argument, a tuple of six
+ integers (32-bit time_low, 16-bit time_mid, 16-bit time_hi_version,
+ 8-bit clock_seq_hi_variant, 8-bit clock_seq_low, 48-bit node) as
+ the 'fields' argument, or a single 128-bit integer as the 'int'
+ argument. When a string of hex digits is given, curly braces,
+ hyphens, and a URN prefix are all optional. For example, these
+ expressions all yield the same UUID:
+
+ UUID('{12345678-1234-5678-1234-567812345678}')
+ UUID('12345678123456781234567812345678')
+ UUID('urn:uuid:12345678-1234-5678-1234-567812345678')
+ UUID(bytes='\x12\x34\x56\x78'*4)
+ UUID(bytes_le='\x78\x56\x34\x12\x34\x12\x78\x56' +
+ '\x12\x34\x56\x78\x12\x34\x56\x78')
+ UUID(fields=(0x12345678, 0x1234, 0x5678, 0x12, 0x34, 0x567812345678))
+ UUID(int=0x12345678123456781234567812345678)
+
+ Exactly one of 'hex', 'bytes', 'bytes_le', 'fields', or 'int' must
+ be given. The 'version' argument is optional; if given, the resulting
+ UUID will have its variant and version set according to RFC 4122,
+ overriding the given 'hex', 'bytes', 'bytes_le', 'fields', or 'int'.
+
+ is_safe is an enum exposed as an attribute on the instance. It
+ indicates whether the UUID has been generated in a way that is safe
+ for multiprocessing applications, via uuid_generate_time_safe(3).
+ """
+
+ if [hex, bytes, bytes_le, fields, int].count(None) != 4:
+ raise TypeError('one of the hex, bytes, bytes_le, fields, '
+ 'or int arguments must be given')
+ if hex is not None:
+ hex = hex.replace('urn:', '').replace('uuid:', '')
+ hex = hex.strip('{}').replace('-', '')
+ if len(hex) != 32:
+ raise ValueError('badly formed hexadecimal UUID string')
+ int = int_(hex, 16)
+ if bytes_le is not None:
+ if len(bytes_le) != 16:
+ raise ValueError('bytes_le is not a 16-char string')
+ bytes = (bytes_le[4-1::-1] + bytes_le[6-1:4-1:-1] +
+ bytes_le[8-1:6-1:-1] + bytes_le[8:])
+ if bytes is not None:
+ if len(bytes) != 16:
+ raise ValueError('bytes is not a 16-char string')
+ assert isinstance(bytes, bytes_), repr(bytes)
+ int = int_.from_bytes(bytes, byteorder='big')
+ if fields is not None:
+ if len(fields) != 6:
+ raise ValueError('fields is not a 6-tuple')
+ (time_low, time_mid, time_hi_version,
+ clock_seq_hi_variant, clock_seq_low, node) = fields
+ if not 0 <= time_low < 1<<32:
+ raise ValueError('field 1 out of range (need a 32-bit value)')
+ if not 0 <= time_mid < 1<<16:
+ raise ValueError('field 2 out of range (need a 16-bit value)')
+ if not 0 <= time_hi_version < 1<<16:
+ raise ValueError('field 3 out of range (need a 16-bit value)')
+ if not 0 <= clock_seq_hi_variant < 1<<8:
+ raise ValueError('field 4 out of range (need an 8-bit value)')
+ if not 0 <= clock_seq_low < 1<<8:
+ raise ValueError('field 5 out of range (need an 8-bit value)')
+ if not 0 <= node < 1<<48:
+ raise ValueError('field 6 out of range (need a 48-bit value)')
+ clock_seq = (clock_seq_hi_variant << 8) | clock_seq_low
+ int = ((time_low << 96) | (time_mid << 80) |
+ (time_hi_version << 64) | (clock_seq << 48) | node)
+ if int is not None:
+ if not 0 <= int < 1<<128:
+ raise ValueError('int is out of range (need a 128-bit value)')
+ if version is not None:
+ if not 1 <= version <= 5:
+ raise ValueError('illegal version number')
+ # Set the variant to RFC 4122.
+ int &= ~(0xc000 << 48)
+ int |= 0x8000 << 48
+ # Set the version number.
+ int &= ~(0xf000 << 64)
+ int |= version << 76
+ object.__setattr__(self, 'int', int)
+ object.__setattr__(self, 'is_safe', is_safe)
+
+ def __getstate__(self):
+ d = {'int': self.int}
+ if self.is_safe != SafeUUID.unknown:
+ # is_safe is a SafeUUID instance. Return just its value, so that
+ # it can be un-pickled in older Python versions without SafeUUID.
+ d['is_safe'] = self.is_safe.value
+ return d
+
+ def __setstate__(self, state):
+ object.__setattr__(self, 'int', state['int'])
+ # is_safe was added in 3.7; it is also omitted when it is "unknown"
+ object.__setattr__(self, 'is_safe',
+ SafeUUID(state['is_safe'])
+ if 'is_safe' in state else SafeUUID.unknown)
+
+ def __eq__(self, other):
+ if isinstance(other, UUID):
+ return self.int == other.int
+ return NotImplemented
+
+ # Q. What's the value of being able to sort UUIDs?
+ # A. Use them as keys in a B-Tree or similar mapping.
+
+ def __lt__(self, other):
+ if isinstance(other, UUID):
+ return self.int < other.int
+ return NotImplemented
+
+ def __gt__(self, other):
+ if isinstance(other, UUID):
+ return self.int > other.int
+ return NotImplemented
+
+ def __le__(self, other):
+ if isinstance(other, UUID):
+ return self.int <= other.int
+ return NotImplemented
+
+ def __ge__(self, other):
+ if isinstance(other, UUID):
+ return self.int >= other.int
+ return NotImplemented
+
+ def __hash__(self):
+ return hash(self.int)
+
+ def __int__(self):
+ return self.int
+
+ def __repr__(self):
+ return '%s(%r)' % (self.__class__.__name__, str(self))
+
+ def __setattr__(self, name, value):
+ raise TypeError('UUID objects are immutable')
+
+ def __str__(self):
+ hex = '%032x' % self.int
+ return '%s-%s-%s-%s-%s' % (
+ hex[:8], hex[8:12], hex[12:16], hex[16:20], hex[20:])
+
+ @property
+ def bytes(self):
+ return self.int.to_bytes(16, 'big')
+
+ @property
+ def bytes_le(self):
+ bytes = self.bytes
+ return (bytes[4-1::-1] + bytes[6-1:4-1:-1] + bytes[8-1:6-1:-1] +
+ bytes[8:])
+
+ @property
+ def fields(self):
+ return (self.time_low, self.time_mid, self.time_hi_version,
+ self.clock_seq_hi_variant, self.clock_seq_low, self.node)
+
+ @property
+ def time_low(self):
+ return self.int >> 96
+
+ @property
+ def time_mid(self):
+ return (self.int >> 80) & 0xffff
+
+ @property
+ def time_hi_version(self):
+ return (self.int >> 64) & 0xffff
+
+ @property
+ def clock_seq_hi_variant(self):
+ return (self.int >> 56) & 0xff
+
+ @property
+ def clock_seq_low(self):
+ return (self.int >> 48) & 0xff
+
+ @property
+ def time(self):
+ return (((self.time_hi_version & 0x0fff) << 48) |
+ (self.time_mid << 32) | self.time_low)
+
+ @property
+ def clock_seq(self):
+ return (((self.clock_seq_hi_variant & 0x3f) << 8) |
+ self.clock_seq_low)
+
+ @property
+ def node(self):
+ return self.int & 0xffffffffffff
+
+ @property
+ def hex(self):
+ return '%032x' % self.int
+
+ @property
+ def urn(self):
+ return 'urn:uuid:' + str(self)
+
+ @property
+ def variant(self):
+ if not self.int & (0x8000 << 48):
+ return RESERVED_NCS
+ elif not self.int & (0x4000 << 48):
+ return RFC_4122
+ elif not self.int & (0x2000 << 48):
+ return RESERVED_MICROSOFT
+ else:
+ return RESERVED_FUTURE
+
+ @property
+ def version(self):
+ # The version bits are only meaningful for RFC 4122 UUIDs.
+ if self.variant == RFC_4122:
+ return int((self.int >> 76) & 0xf)
+
+
+def _get_command_stdout(command, *args):
+ import io, os, shutil, subprocess
+
+ try:
+ path_dirs = os.environ.get('PATH', os.defpath).split(os.pathsep)
+ path_dirs.extend(['/sbin', '/usr/sbin'])
+ executable = shutil.which(command, path=os.pathsep.join(path_dirs))
+ if executable is None:
+ return None
+ # LC_ALL=C to ensure English output, stderr=DEVNULL to prevent output
+ # on stderr (Note: we don't have an example where the words we search
+ # for are actually localized, but in theory some system could do so.)
+ env = dict(os.environ)
+ env['LC_ALL'] = 'C'
+ proc = subprocess.Popen((executable,) + args,
+ stdout=subprocess.PIPE,
+ stderr=subprocess.DEVNULL,
+ env=env)
+ if not proc:
+ return None
+ stdout, stderr = proc.communicate()
+ return io.BytesIO(stdout)
+ except (OSError, subprocess.SubprocessError):
+ return None
+
+
+# For MAC (a.k.a. IEEE 802, or EUI-48) addresses, the second least significant
+# bit of the first octet signifies whether the MAC address is universally (0)
+# or locally (1) administered. Network cards from hardware manufacturers will
+# always be universally administered to guarantee global uniqueness of the MAC
+# address, but any particular machine may have other interfaces which are
+# locally administered. An example of the latter is the bridge interface to
+# the Touch Bar on MacBook Pros.
+#
+# This bit works out to be the 42nd bit counting from 1 being the least
+# significant, or 1<<41. We'll prefer universally administered MAC addresses
+# over locally administered ones since the former are globally unique, but
+# we'll return the first of the latter found if that's all the machine has.
+#
+# See https://en.wikipedia.org/wiki/MAC_address#Universal_vs._local
+
+def _is_universal(mac):
+ return not (mac & (1 << 41))
+
+
+def _find_mac_near_keyword(command, args, keywords, get_word_index):
+ """Searches a command's output for a MAC address near a keyword.
+
+ Each line of words in the output is case-insensitively searched for
+ any of the given keywords. Upon a match, get_word_index is invoked
+ to pick a word from the line, given the index of the match. For
+ example, lambda i: 0 would get the first word on the line, while
+ lambda i: i - 1 would get the word preceding the keyword.
+ """
+ stdout = _get_command_stdout(command, args)
+ if stdout is None:
+ return None
+
+ first_local_mac = None
+ for line in stdout:
+ words = line.lower().rstrip().split()
+ for i in range(len(words)):
+ if words[i] in keywords:
+ try:
+ word = words[get_word_index(i)]
+ mac = int(word.replace(_MAC_DELIM, b''), 16)
+ except (ValueError, IndexError):
+ # Virtual interfaces, such as those provided by
+ # VPNs, do not have a colon-delimited MAC address
+ # as expected, but a 16-byte HWAddr separated by
+ # dashes. These should be ignored in favor of a
+ # real MAC address
+ pass
+ else:
+ if _is_universal(mac):
+ return mac
+ first_local_mac = first_local_mac or mac
+ return first_local_mac or None
+
+
+def _parse_mac(word):
+ # Accept 'HH:HH:HH:HH:HH:HH' MAC address (ex: '52:54:00:9d:0e:67'),
+ # but reject IPv6 address (ex: 'fe80::5054:ff:fe9' or '123:2:3:4:5:6:7:8').
+ #
+ # Virtual interfaces, such as those provided by VPNs, do not have a
+ # colon-delimited MAC address as expected, but a 16-byte HWAddr separated
+ # by dashes. These should be ignored in favor of a real MAC address
+ parts = word.split(_MAC_DELIM)
+ if len(parts) != 6:
+ return
+ if _MAC_OMITS_LEADING_ZEROES:
+ # (Only) on AIX the macaddr value given is not prefixed by 0, e.g.
+ # en0 1500 link#2 fa.bc.de.f7.62.4 110854824 0 160133733 0 0
+ # not
+ # en0 1500 link#2 fa.bc.de.f7.62.04 110854824 0 160133733 0 0
+ if not all(1 <= len(part) <= 2 for part in parts):
+ return
+ hexstr = b''.join(part.rjust(2, b'0') for part in parts)
+ else:
+ if not all(len(part) == 2 for part in parts):
+ return
+ hexstr = b''.join(parts)
+ try:
+ return int(hexstr, 16)
+ except ValueError:
+ return
+
+
+def _find_mac_under_heading(command, args, heading):
+ """Looks for a MAC address under a heading in a command's output.
+
+ The first line of words in the output is searched for the given
+ heading. Words at the same word index as the heading in subsequent
+ lines are then examined to see if they look like MAC addresses.
+ """
+ stdout = _get_command_stdout(command, args)
+ if stdout is None:
+ return None
+
+ keywords = stdout.readline().rstrip().split()
+ try:
+ column_index = keywords.index(heading)
+ except ValueError:
+ return None
+
+ first_local_mac = None
+ for line in stdout:
+ words = line.rstrip().split()
+ try:
+ word = words[column_index]
+ except IndexError:
+ continue
+
+ mac = _parse_mac(word)
+ if mac is None:
+ continue
+ if _is_universal(mac):
+ return mac
+ if first_local_mac is None:
+ first_local_mac = mac
+
+ return first_local_mac
+
+
+# The following functions call external programs to 'get' a macaddr value to
+# be used as basis for an uuid
+def _ifconfig_getnode():
+ """Get the hardware address on Unix by running ifconfig."""
+ # This works on Linux ('' or '-a'), Tru64 ('-av'), but not all Unixes.
+ keywords = (b'hwaddr', b'ether', b'address:', b'lladdr')
+ for args in ('', '-a', '-av'):
+ mac = _find_mac_near_keyword('ifconfig', args, keywords, lambda i: i+1)
+ if mac:
+ return mac
+ return None
+
+def _ip_getnode():
+ """Get the hardware address on Unix by running ip."""
+ # This works on Linux with iproute2.
+ mac = _find_mac_near_keyword('ip', 'link', [b'link/ether'], lambda i: i+1)
+ if mac:
+ return mac
+ return None
+
+def _arp_getnode():
+ """Get the hardware address on Unix by running arp."""
+ import os, socket
+ try:
+ ip_addr = socket.gethostbyname(socket.gethostname())
+ except OSError:
+ return None
+
+ # Try getting the MAC addr from arp based on our IP address (Solaris).
+ mac = _find_mac_near_keyword('arp', '-an', [os.fsencode(ip_addr)], lambda i: -1)
+ if mac:
+ return mac
+
+ # This works on OpenBSD
+ mac = _find_mac_near_keyword('arp', '-an', [os.fsencode(ip_addr)], lambda i: i+1)
+ if mac:
+ return mac
+
+ # This works on Linux, FreeBSD and NetBSD
+ mac = _find_mac_near_keyword('arp', '-an', [os.fsencode('(%s)' % ip_addr)],
+ lambda i: i+2)
+ # Return None instead of 0.
+ if mac:
+ return mac
+ return None
+
+def _lanscan_getnode():
+ """Get the hardware address on Unix by running lanscan."""
+ # This might work on HP-UX.
+ return _find_mac_near_keyword('lanscan', '-ai', [b'lan0'], lambda i: 0)
+
+def _netstat_getnode():
+ """Get the hardware address on Unix by running netstat."""
+ # This works on AIX and might work on Tru64 UNIX.
+ return _find_mac_under_heading('netstat', '-ian', b'Address')
+
+def _ipconfig_getnode():
+ """[DEPRECATED] Get the hardware address on Windows."""
+ # bpo-40501: UuidCreateSequential() is now the only supported approach
+ return _windll_getnode()
+
+def _netbios_getnode():
+ """[DEPRECATED] Get the hardware address on Windows."""
+ # bpo-40501: UuidCreateSequential() is now the only supported approach
+ return _windll_getnode()
+
+
+# Import optional C extension at toplevel, to help disabling it when testing
+try:
+ import _uuid
+ _generate_time_safe = getattr(_uuid, "generate_time_safe", None)
+ _UuidCreate = getattr(_uuid, "UuidCreate", None)
+ _has_uuid_generate_time_safe = _uuid.has_uuid_generate_time_safe
+except ImportError:
+ _uuid = None
+ _generate_time_safe = None
+ _UuidCreate = None
+ _has_uuid_generate_time_safe = None
+
+
+def _load_system_functions():
+ """[DEPRECATED] Platform-specific functions loaded at import time"""
+
+
+def _unix_getnode():
+ """Get the hardware address on Unix using the _uuid extension module."""
+ if _generate_time_safe:
+ uuid_time, _ = _generate_time_safe()
+ return UUID(bytes=uuid_time).node
+
+def _windll_getnode():
+ """Get the hardware address on Windows using the _uuid extension module."""
+ if _UuidCreate:
+ uuid_bytes = _UuidCreate()
+ return UUID(bytes_le=uuid_bytes).node
+
+def _random_getnode():
+ """Get a random node ID."""
+ # RFC 4122, $4.1.6 says "For systems with no IEEE address, a randomly or
+ # pseudo-randomly generated value may be used; see Section 4.5. The
+ # multicast bit must be set in such addresses, in order that they will
+ # never conflict with addresses obtained from network cards."
+ #
+ # The "multicast bit" of a MAC address is defined to be "the least
+ # significant bit of the first octet". This works out to be the 41st bit
+ # counting from 1 being the least significant bit, or 1<<40.
+ #
+ # See https://en.wikipedia.org/wiki/MAC_address#Unicast_vs._multicast
+ import random
+ return random.getrandbits(48) | (1 << 40)
+
+
+# _OS_GETTERS, when known, are targeted for a specific OS or platform.
+# The order is by 'common practice' on the specified platform.
+# Note: 'posix' and 'windows' _OS_GETTERS are prefixed by a dll/dlload() method
+# which, when successful, means none of these "external" methods are called.
+# _GETTERS is (also) used by test_uuid.py to SkipUnless(), e.g.,
+# @unittest.skipUnless(_uuid._ifconfig_getnode in _uuid._GETTERS, ...)
+if _LINUX:
+ _OS_GETTERS = [_ip_getnode, _ifconfig_getnode]
+elif sys.platform == 'darwin':
+ _OS_GETTERS = [_ifconfig_getnode, _arp_getnode, _netstat_getnode]
+elif sys.platform == 'win32':
+ # bpo-40201: _windll_getnode will always succeed, so these are not needed
+ _OS_GETTERS = []
+elif _AIX:
+ _OS_GETTERS = [_netstat_getnode]
+else:
+ _OS_GETTERS = [_ifconfig_getnode, _ip_getnode, _arp_getnode,
+ _netstat_getnode, _lanscan_getnode]
+if os.name == 'posix':
+ _GETTERS = [_unix_getnode] + _OS_GETTERS
+elif os.name == 'nt':
+ _GETTERS = [_windll_getnode] + _OS_GETTERS
+else:
+ _GETTERS = _OS_GETTERS
+
+_node = None
+
+def getnode():
+ """Get the hardware address as a 48-bit positive integer.
+
+ The first time this runs, it may launch a separate program, which could
+ be quite slow. If all attempts to obtain the hardware address fail, we
+ choose a random 48-bit number with its eighth bit set to 1 as recommended
+ in RFC 4122.
+ """
+ global _node
+ if _node is not None:
+ return _node
+
+ for getter in _GETTERS + [_random_getnode]:
+ try:
+ _node = getter()
+ except:
+ continue
+ if (_node is not None) and (0 <= _node < (1 << 48)):
+ return _node
+ assert False, '_random_getnode() returned invalid value: {}'.format(_node)
+
+
+_last_timestamp = None
+
+def uuid1(node=None, clock_seq=None):
+ """Generate a UUID from a host ID, sequence number, and the current time.
+ If 'node' is not given, getnode() is used to obtain the hardware
+ address. If 'clock_seq' is given, it is used as the sequence number;
+ otherwise a random 14-bit sequence number is chosen."""
+
+ # When the system provides a version-1 UUID generator, use it (but don't
+ # use UuidCreate here because its UUIDs don't conform to RFC 4122).
+ if _generate_time_safe is not None and node is clock_seq is None:
+ uuid_time, safely_generated = _generate_time_safe()
+ try:
+ is_safe = SafeUUID(safely_generated)
+ except ValueError:
+ is_safe = SafeUUID.unknown
+ return UUID(bytes=uuid_time, is_safe=is_safe)
+
+ global _last_timestamp
+ import time
+ nanoseconds = time.time_ns()
+ # 0x01b21dd213814000 is the number of 100-ns intervals between the
+ # UUID epoch 1582-10-15 00:00:00 and the Unix epoch 1970-01-01 00:00:00.
+ timestamp = nanoseconds // 100 + 0x01b21dd213814000
+ if _last_timestamp is not None and timestamp <= _last_timestamp:
+ timestamp = _last_timestamp + 1
+ _last_timestamp = timestamp
+ if clock_seq is None:
+ import random
+ clock_seq = random.getrandbits(14) # instead of stable storage
+ time_low = timestamp & 0xffffffff
+ time_mid = (timestamp >> 32) & 0xffff
+ time_hi_version = (timestamp >> 48) & 0x0fff
+ clock_seq_low = clock_seq & 0xff
+ clock_seq_hi_variant = (clock_seq >> 8) & 0x3f
+ if node is None:
+ node = getnode()
+ return UUID(fields=(time_low, time_mid, time_hi_version,
+ clock_seq_hi_variant, clock_seq_low, node), version=1)
+
+def uuid3(namespace, name):
+ """Generate a UUID from the MD5 hash of a namespace UUID and a name."""
+ from hashlib import md5
+ digest = md5(
+ namespace.bytes + bytes(name, "utf-8"),
+ usedforsecurity=False
+ ).digest()
+ return UUID(bytes=digest[:16], version=3)
+
+def uuid4():
+ """Generate a random UUID."""
+ return UUID(bytes=os.urandom(16), version=4)
+
+def uuid5(namespace, name):
+ """Generate a UUID from the SHA-1 hash of a namespace UUID and a name."""
+ from hashlib import sha1
+ hash = sha1(namespace.bytes + bytes(name, "utf-8")).digest()
+ return UUID(bytes=hash[:16], version=5)
+
+# The following standard UUIDs are for use with uuid3() or uuid5().
+
+NAMESPACE_DNS = UUID('6ba7b810-9dad-11d1-80b4-00c04fd430c8')
+NAMESPACE_URL = UUID('6ba7b811-9dad-11d1-80b4-00c04fd430c8')
+NAMESPACE_OID = UUID('6ba7b812-9dad-11d1-80b4-00c04fd430c8')
+NAMESPACE_X500 = UUID('6ba7b814-9dad-11d1-80b4-00c04fd430c8')