FM / python3.6

/usr/lib64/python3.6

Name	Size	Mode	Actions
asyncio/	-	0755	rm
collections/	-	0755	rm
concurrent/	-	0755	rm
config-3.6m-x86_64-linux-gnu/	-	0755	rm
ctypes/	-	0755	rm
curses/	-	0755	rm
dbm/	-	0755	rm
distutils/	-	0755	rm
email/	-	0755	rm
encodings/	-	0755	rm
ensurepip/	-	0755	rm
html/	-	0755	rm
http/	-	0755	rm
importlib/	-	0755	rm
json/	-	0755	rm
lib-dynload/	-	0755	rm
lib2to3/	-	0755	rm
logging/	-	0755	rm
multiprocessing/	-	0755	rm
pydoc_data/	-	0755	rm
site-packages/	-	0755	rm
sqlite3/	-	0755	rm
test/	-	0755	rm
unittest/	-	0755	rm
urllib/	-	0755	rm
venv/	-	0755	rm
wsgiref/	-	0755	rm
xml/	-	0755	rm
xmlrpc/	-	0755	rm
__pycache__/	-	0755	rm
abc.py	8727	0644	edit dl rm
aifc.py	32454	0644	edit dl rm
antigravity.py	477	0644	edit dl rm
argparse.py	90372	0644	edit dl rm
ast.py	12166	0644	edit dl rm
asynchat.py	11328	0644	edit dl rm
asyncore.py	20159	0644	edit dl rm
base64.py	20388	0755	edit dl rm
bdb.py	23556	0644	edit dl rm
binhex.py	13954	0644	edit dl rm
bisect.py	2595	0644	edit dl rm
bz2.py	12478	0644	edit dl rm
calendar.py	23213	0644	edit dl rm
cgi.py	37219	0755	edit dl rm
cgitb.py	12018	0644	edit dl rm
chunk.py	5425	0644	edit dl rm
cmd.py	14860	0644	edit dl rm
code.py	10614	0644	edit dl rm
codecs.py	36276	0644	edit dl rm
codeop.py	5994	0644	edit dl rm
colorsys.py	4064	0644	edit dl rm
compileall.py	12125	0644	edit dl rm
configparser.py	53592	0644	edit dl rm
contextlib.py	13162	0644	edit dl rm
copy.py	8815	0644	edit dl rm
copyreg.py	7007	0644	edit dl rm
cProfile.py	5380	0755	edit dl rm
crypt.py	1864	0644	edit dl rm
csv.py	16180	0644	edit dl rm
datetime.py	82034	0644	edit dl rm
decimal.py	320	0644	edit dl rm
difflib.py	84377	0644	edit dl rm
dis.py	18132	0644	edit dl rm
doctest.py	104391	0644	edit dl rm
dummy_threading.py	2815	0644	edit dl rm
enum.py	33606	0644	edit dl rm
filecmp.py	9830	0644	edit dl rm
fileinput.py	14471	0644	edit dl rm
fnmatch.py	3166	0644	edit dl rm
formatter.py	15143	0644	edit dl rm
fractions.py	23639	0644	edit dl rm
ftplib.py	35617	0644	edit dl rm
functools.py	31346	0644	edit dl rm
genericpath.py	5028	0644	edit dl rm
getopt.py	7489	0644	edit dl rm
getpass.py	5994	0644	edit dl rm
gettext.py	21530	0644	edit dl rm
glob.py	5638	0644	edit dl rm
gzip.py	20334	0644	edit dl rm
hashlib.py	8799	0644	edit dl rm
heapq.py	22929	0644	edit dl rm
hmac.py	6381	0644	edit dl rm
imaplib.py	53464	0644	edit dl rm
imghdr.py	3795	0644	edit dl rm
imp.py	10669	0644	edit dl rm
inspect.py	116958	0644	edit dl rm
io.py	3517	0644	edit dl rm
ipaddress.py	77818	0644	edit dl rm
keyword.py	2219	0755	edit dl rm
linecache.py	5312	0644	edit dl rm
locale.py	77300	0644	edit dl rm
lzma.py	12983	0644	edit dl rm
macpath.py	5971	0644	edit dl rm
macurl2path.py	2732	0644	edit dl rm
mailbox.py	78624	0644	edit dl rm
mailcap.py	9067	0644	edit dl rm
mimetypes.py	21042	0644	edit dl rm
modulefinder.py	23027	0644	edit dl rm
netrc.py	5684	0644	edit dl rm
nntplib.py	43078	0644	edit dl rm
ntpath.py	23094	0644	edit dl rm
nturl2path.py	2444	0644	edit dl rm
numbers.py	10243	0644	edit dl rm
opcode.py	5822	0644	edit dl rm
operator.py	10863	0644	edit dl rm
optparse.py	60371	0644	edit dl rm
os.py	37526	0644	edit dl rm
pathlib.py	46238	0644	edit dl rm
pdb.py	61320	0755	edit dl rm
pickle.py	55691	0644	edit dl rm
pickletools.py	91775	0644	edit dl rm
pipes.py	8916	0644	edit dl rm
pkgutil.py	21315	0644	edit dl rm
platform.py	47214	0755	edit dl rm
plistlib.py	32291	0644	edit dl rm
poplib.py	15087	0644	edit dl rm
posixpath.py	16324	0644	edit dl rm
pprint.py	20860	0644	edit dl rm
profile.py	22029	0755	edit dl rm
pstats.py	26564	0644	edit dl rm
pty.py	4763	0644	edit dl rm
pyclbr.py	13558	0644	edit dl rm
pydoc.py	103501	0644	edit dl rm
py_compile.py	7181	0644	edit dl rm
queue.py	8780	0644	edit dl rm
quopri.py	7262	0755	edit dl rm
random.py	27442	0644	edit dl rm
re.py	15552	0644	edit dl rm
reprlib.py	5336	0644	edit dl rm
rlcompleter.py	7097	0644	edit dl rm
runpy.py	11959	0644	edit dl rm
sched.py	6511	0644	edit dl rm
secrets.py	2038	0644	edit dl rm
selectors.py	19438	0644	edit dl rm
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shlex.py	12956	0644	edit dl rm
shutil.py	40829	0644	edit dl rm
signal.py	2123	0644	edit dl rm
site.py	21268	0644	edit dl rm
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socket.py	27443	0644	edit dl rm
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string.py	11795	0644	edit dl rm
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sysconfig.py	24876	0644	edit dl rm
tabnanny.py	11411	0755	edit dl rm
tarfile.py	111635	0755	edit dl rm
telnetlib.py	23136	0644	edit dl rm
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this.py	1003	0644	edit dl rm
threading.py	50136	0644	edit dl rm
timeit.py	13342	0755	edit dl rm
token.py	3075	0644	edit dl rm
tokenize.py	29496	0644	edit dl rm
trace.py	28733	0755	edit dl rm
traceback.py	23458	0644	edit dl rm
tracemalloc.py	16658	0644	edit dl rm
tty.py	879	0644	edit dl rm
types.py	8870	0644	edit dl rm
typing.py	80274	0644	edit dl rm
uu.py	6763	0755	edit dl rm
uuid.py	24020	0644	edit dl rm
warnings.py	18488	0644	edit dl rm
wave.py	17709	0644	edit dl rm
weakref.py	20466	0644	edit dl rm
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__future__.py	4841	0644	edit dl rm
__phello__.foo.py	64	0644	edit dl rm

Edit: /usr/lib64/python3.6/uuid.py (24020B)

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

__author__ = 'Ka-Ping Yee <ping@zesty.ca>'

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 UUID(object):
    """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)
    """

def __init__(self, hex=None, bytes=None, bytes_le=None, fields=None,
                       int=None, version=None):
        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'.
        """

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
        self.__dict__['int'] = int

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 _popen(command, *args):
    import os, shutil, subprocess
    executable = shutil.which(command)
    if executable is None:
        path = os.pathsep.join(('/sbin', '/usr/sbin'))
        executable = shutil.which(command, path=path)
        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)
    return proc

def _find_mac(command, args, hw_identifiers, get_index):
    try:
        proc = _popen(command, *args.split())
        if not proc:
            return
        with proc:
            for line in proc.stdout:
                words = line.lower().rstrip().split()
                for i in range(len(words)):
                    if words[i] in hw_identifiers:
                        try:
                            word = words[get_index(i)]
                            mac = int(word.replace(b':', b''), 16)
                            if mac:
                                return mac
                        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
    except OSError:
        pass

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('ifconfig', args, keywords, lambda i: i+1)
        if mac:
            return mac

def _ip_getnode():
    """Get the hardware address on Unix by running ip."""
    # This works on Linux with iproute2.
    mac = _find_mac('ip', 'link', [b'link/ether'], lambda i: i+1)
    if mac:
        return mac

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('arp', '-an', [os.fsencode(ip_addr)], lambda i: -1)
    if mac:
        return mac

# This works on OpenBSD
    mac = _find_mac('arp', '-an', [os.fsencode(ip_addr)], lambda i: i+1)
    if mac:
        return mac

# This works on Linux, FreeBSD and NetBSD
    mac = _find_mac('arp', '-an', [os.fsencode('(%s)' % ip_addr)],
                    lambda i: i+2)
    if mac:
        return mac

def _lanscan_getnode():
    """Get the hardware address on Unix by running lanscan."""
    # This might work on HP-UX.
    return _find_mac('lanscan', '-ai', [b'lan0'], lambda i: 0)

def _netstat_getnode():
    """Get the hardware address on Unix by running netstat."""
    # This might work on AIX, Tru64 UNIX and presumably on IRIX.
    try:
        proc = _popen('netstat', '-ia')
        if not proc:
            return
        with proc:
            words = proc.stdout.readline().rstrip().split()
            try:
                i = words.index(b'Address')
            except ValueError:
                return
            for line in proc.stdout:
                try:
                    words = line.rstrip().split()
                    word = words[i]
                    if len(word) == 17 and word.count(b':') == 5:
                        mac = int(word.replace(b':', b''), 16)
                        if mac:
                            return mac
                except (ValueError, IndexError):
                    pass
    except OSError:
        pass

def _ipconfig_getnode():
    """Get the hardware address on Windows by running ipconfig.exe."""
    import os, re, subprocess
    dirs = ['', r'c:\windows\system32', r'c:\winnt\system32']
    try:
        import ctypes
        buffer = ctypes.create_string_buffer(300)
        ctypes.windll.kernel32.GetSystemDirectoryA(buffer, 300)
        dirs.insert(0, buffer.value.decode('mbcs'))
    except:
        pass
    for dir in dirs:
        try:
            proc = subprocess.Popen([os.path.join(dir, 'ipconfig'), '/all'],
                                    stdout=subprocess.PIPE,
                                    encoding="oem")
        except OSError:
            continue
        with proc:
            for line in proc.stdout:
                value = line.split(':')[-1].strip().lower()
                if re.fullmatch('(?:[0-9a-f][0-9a-f]-){5}[0-9a-f][0-9a-f]', value):
                    return int(value.replace('-', ''), 16)

def _netbios_getnode():
    """Get the hardware address on Windows using NetBIOS calls.
    See http://support.microsoft.com/kb/118623 for details."""
    import win32wnet, netbios
    ncb = netbios.NCB()
    ncb.Command = netbios.NCBENUM
    ncb.Buffer = adapters = netbios.LANA_ENUM()
    adapters._pack()
    if win32wnet.Netbios(ncb) != 0:
        return
    adapters._unpack()
    for i in range(adapters.length):
        ncb.Reset()
        ncb.Command = netbios.NCBRESET
        ncb.Lana_num = ord(adapters.lana[i])
        if win32wnet.Netbios(ncb) != 0:
            continue
        ncb.Reset()
        ncb.Command = netbios.NCBASTAT
        ncb.Lana_num = ord(adapters.lana[i])
        ncb.Callname = '*'.ljust(16)
        ncb.Buffer = status = netbios.ADAPTER_STATUS()
        if win32wnet.Netbios(ncb) != 0:
            continue
        status._unpack()
        bytes = status.adapter_address[:6]
        if len(bytes) != 6:
            continue
        return int.from_bytes(bytes, 'big')

# Thanks to Thomas Heller for ctypes and for his help with its use here.

# If ctypes is available, use it to find system routines for UUID generation.
# XXX This makes the module non-thread-safe!
_uuid_generate_time = _UuidCreate = None
try:
    import ctypes, ctypes.util
    import sys

# The uuid_generate_* routines are provided by libuuid on at least
    # Linux and FreeBSD, and provided by libc on Mac OS X.
    _libnames = ['uuid']
    if not sys.platform.startswith('win'):
        _libnames.append('c')
    for libname in _libnames:
        try:
            lib = ctypes.CDLL(ctypes.util.find_library(libname))
        except Exception:
            continue
        if hasattr(lib, 'uuid_generate_time'):
            _uuid_generate_time = lib.uuid_generate_time
            break
    del _libnames

# The uuid_generate_* functions are broken on MacOS X 10.5, as noted
    # in issue #8621 the function generates the same sequence of values
    # in the parent process and all children created using fork (unless
    # those children use exec as well).
    #
    # Assume that the uuid_generate functions are broken from 10.5 onward,
    # the test can be adjusted when a later version is fixed.
    if sys.platform == 'darwin':
        if int(os.uname().release.split('.')[0]) >= 9:
            _uuid_generate_time = None

# On Windows prior to 2000, UuidCreate gives a UUID containing the
    # hardware address.  On Windows 2000 and later, UuidCreate makes a
    # random UUID and UuidCreateSequential gives a UUID containing the
    # hardware address.  These routines are provided by the RPC runtime.
    # NOTE:  at least on Tim's WinXP Pro SP2 desktop box, while the last
    # 6 bytes returned by UuidCreateSequential are fixed, they don't appear
    # to bear any relationship to the MAC address of any network device
    # on the box.
    try:
        lib = ctypes.windll.rpcrt4
    except:
        lib = None
    _UuidCreate = getattr(lib, 'UuidCreateSequential',
                          getattr(lib, 'UuidCreate', None))
except:
    pass

def _unixdll_getnode():
    """Get the hardware address on Unix using ctypes."""
    _buffer = ctypes.create_string_buffer(16)
    _uuid_generate_time(_buffer)
    return UUID(bytes=bytes_(_buffer.raw)).node

def _windll_getnode():
    """Get the hardware address on Windows using ctypes."""
    _buffer = ctypes.create_string_buffer(16)
    if _UuidCreate(_buffer) == 0:
        return UUID(bytes=bytes_(_buffer.raw)).node

def _random_getnode():
    """Get a random node ID, with eighth bit set as suggested by RFC 4122."""
    import random
    return random.getrandbits(48) | 0x010000000000

_node = None

_NODE_GETTERS_WIN32 = [_windll_getnode, _netbios_getnode, _ipconfig_getnode]

_NODE_GETTERS_UNIX = [_unixdll_getnode, _ifconfig_getnode, _ip_getnode,
                      _arp_getnode, _lanscan_getnode, _netstat_getnode]

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

import sys
    if sys.platform == 'win32':
        getters = _NODE_GETTERS_WIN32
    else:
        getters = _NODE_GETTERS_UNIX

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 _uuid_generate_time and node is clock_seq is None:
        _buffer = ctypes.create_string_buffer(16)
        _uuid_generate_time(_buffer)
        return UUID(bytes=bytes_(_buffer.raw))

global _last_timestamp
    import time
    nanoseconds = int(time.time() * 1e9)
    # 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 = int(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')

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