def get_ldap_connection(dn=None, password=None):
tls_configuration = None
use_ssl = False
try:
cacert = configuration.get("ldap", "cacert")
tls_configuration = Tls(validate=ssl.CERT_REQUIRED, ca_certs_file=cacert)
use_ssl = True
except:
pass
server = Server(configuration.get("ldap", "uri"), use_ssl, tls_configuration)
conn = Connection(server, native(dn), native(password))
if not conn.bind():
log.error("Cannot bind to ldap server: %s ", conn.last_error)
raise AuthenticationError("Cannot bind to ldap server")
return conn
python类native()的实例源码
def from_bytes(cls, mybytes, byteorder='big', signed=False):
"""
Return the integer represented by the given array of bytes.
The mybytes argument must either support the buffer protocol or be an
iterable object producing bytes. Bytes and bytearray are examples of
built-in objects that support the buffer protocol.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument indicates whether two's complement is
used to represent the integer.
"""
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
if isinstance(mybytes, unicode):
raise TypeError("cannot convert unicode objects to bytes")
# mybytes can also be passed as a sequence of integers on Py3.
# Test for this:
elif isinstance(mybytes, collections.Iterable):
mybytes = newbytes(mybytes)
b = mybytes if byteorder == 'big' else mybytes[::-1]
if len(b) == 0:
b = b'\x00'
# The encode() method has been disabled by newbytes, but Py2's
# str has it:
num = int(native(b).encode('hex'), 16)
if signed and (b[0] & 0x80):
num = num - (2 ** (len(b)*8))
return cls(num)
# def _twos_comp(val, bits):
# """compute the 2's compliment of int value val"""
# if( (val&(1<<(bits-1))) != 0 ):
# val = val - (1<<bits)
# return val
def group_contains_user(conn, search_base, group_filter, user_name_attr, username):
search_filter = '(&({0}))'.format(group_filter)
if not conn.search(native(search_base), native(search_filter),
attributes=[native(user_name_attr)]):
log.warning("Unable to find group for %s %s", search_base, search_filter)
else:
for entry in conn.entries:
if username in getattr(entry, user_name_attr).values:
return True
return False
def groups_user(conn, search_base, user_filter, user_name_att, username):
search_filter = "(&({0})({1}={2}))".format(user_filter, user_name_att, username)
try:
memberof_attr = configuration.get("ldap", "group_member_attr")
except:
memberof_attr = "memberOf"
res = conn.search(native(search_base), native(search_filter),
attributes=[native(memberof_attr)])
if not res:
log.info("Cannot find user %s", username)
raise AuthenticationError("Invalid username or password")
if conn.response and memberof_attr not in conn.response[0]["attributes"]:
log.warning("""Missing attribute "%s" when looked-up in Ldap database.
The user does not seem to be a member of a group and therefore won't see any dag
if the option filter_by_owner=True and owner_mode=ldapgroup are set""",
memberof_attr)
return []
user_groups = conn.response[0]["attributes"][memberof_attr]
regex = re.compile("cn=([^,]*).*", re.IGNORECASE)
groups_list = []
try:
groups_list = [regex.search(i).group(1) for i in user_groups]
except IndexError:
log.warning("Parsing error when retrieving the user's group(s)."
" Check if the user belongs to at least one group"
" or if the user's groups name do not contain special characters")
return groups_list
def from_bytes(cls, mybytes, byteorder='big', signed=False):
"""
Return the integer represented by the given array of bytes.
The mybytes argument must either support the buffer protocol or be an
iterable object producing bytes. Bytes and bytearray are examples of
built-in objects that support the buffer protocol.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument indicates whether two's complement is
used to represent the integer.
"""
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
if isinstance(mybytes, unicode):
raise TypeError("cannot convert unicode objects to bytes")
# mybytes can also be passed as a sequence of integers on Py3.
# Test for this:
elif isinstance(mybytes, collections.Iterable):
mybytes = newbytes(mybytes)
b = mybytes if byteorder == 'big' else mybytes[::-1]
if len(b) == 0:
b = b'\x00'
# The encode() method has been disabled by newbytes, but Py2's
# str has it:
num = int(native(b).encode('hex'), 16)
if signed and (b[0] & 0x80):
num = num - (2 ** (len(b)*8))
return cls(num)
# def _twos_comp(val, bits):
# """compute the 2's compliment of int value val"""
# if( (val&(1<<(bits-1))) != 0 ):
# val = val - (1<<bits)
# return val
def _leveldb_write(db, *args, **kwargs):
if kwargs:
raise NotImplementedError('passing keyword arguments to '
'LevelDB not supported')
db.put(*list(map(native, args)))
def _leveldb_delete(db, *args, **kwargs):
if kwargs:
raise NotImplementedError('passing keyword arguments to '
'LevelDB not supported')
db.delete(*list(map(native, args)))
def _leveldb_reader(db, *args, **kwargs):
if kwargs:
raise NotImplementedError('passing keyword arguments to '
'LevelDB not supported')
return db.get(*list(map(native, args)))
def from_bytes(cls, mybytes, byteorder='big', signed=False):
"""
Return the integer represented by the given array of bytes.
The mybytes argument must either support the buffer protocol or be an
iterable object producing bytes. Bytes and bytearray are examples of
built-in objects that support the buffer protocol.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument indicates whether two's complement is
used to represent the integer.
"""
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
if isinstance(mybytes, unicode):
raise TypeError("cannot convert unicode objects to bytes")
# mybytes can also be passed as a sequence of integers on Py3.
# Test for this:
elif isinstance(mybytes, collections.Iterable):
mybytes = newbytes(mybytes)
b = mybytes if byteorder == 'big' else mybytes[::-1]
if len(b) == 0:
b = b'\x00'
# The encode() method has been disabled by newbytes, but Py2's
# str has it:
num = int(native(b).encode('hex'), 16)
if signed and (b[0] & 0x80):
num = num - (2 ** (len(b)*8))
return cls(num)
# def _twos_comp(val, bits):
# """compute the 2's compliment of int value val"""
# if( (val&(1<<(bits-1))) != 0 ):
# val = val - (1<<bits)
# return val
def from_bytes(cls, mybytes, byteorder='big', signed=False):
"""
Return the integer represented by the given array of bytes.
The mybytes argument must either support the buffer protocol or be an
iterable object producing bytes. Bytes and bytearray are examples of
built-in objects that support the buffer protocol.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument indicates whether two's complement is
used to represent the integer.
"""
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
if isinstance(mybytes, unicode):
raise TypeError("cannot convert unicode objects to bytes")
# mybytes can also be passed as a sequence of integers on Py3.
# Test for this:
elif isinstance(mybytes, collections.Iterable):
mybytes = newbytes(mybytes)
b = mybytes if byteorder == 'big' else mybytes[::-1]
if len(b) == 0:
b = b'\x00'
# The encode() method has been disabled by newbytes, but Py2's
# str has it:
num = int(native(b).encode('hex'), 16)
if signed and (b[0] & 0x80):
num = num - (2 ** (len(b)*8))
return cls(num)
# def _twos_comp(val, bits):
# """compute the 2's compliment of int value val"""
# if( (val&(1<<(bits-1))) != 0 ):
# val = val - (1<<bits)
# return val
def from_bytes(cls, mybytes, byteorder='big', signed=False):
"""
Return the integer represented by the given array of bytes.
The mybytes argument must either support the buffer protocol or be an
iterable object producing bytes. Bytes and bytearray are examples of
built-in objects that support the buffer protocol.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument indicates whether two's complement is
used to represent the integer.
"""
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
if isinstance(mybytes, unicode):
raise TypeError("cannot convert unicode objects to bytes")
# mybytes can also be passed as a sequence of integers on Py3.
# Test for this:
elif isinstance(mybytes, collections.Iterable):
mybytes = newbytes(mybytes)
b = mybytes if byteorder == 'big' else mybytes[::-1]
if len(b) == 0:
b = b'\x00'
# The encode() method has been disabled by newbytes, but Py2's
# str has it:
num = int(native(b).encode('hex'), 16)
if signed and (b[0] & 0x80):
num = num - (2 ** (len(b)*8))
return cls(num)
# def _twos_comp(val, bits):
# """compute the 2's compliment of int value val"""
# if( (val&(1<<(bits-1))) != 0 ):
# val = val - (1<<bits)
# return val
def from_bytes(cls, mybytes, byteorder='big', signed=False):
"""
Return the integer represented by the given array of bytes.
The mybytes argument must either support the buffer protocol or be an
iterable object producing bytes. Bytes and bytearray are examples of
built-in objects that support the buffer protocol.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument indicates whether two's complement is
used to represent the integer.
"""
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
if isinstance(mybytes, unicode):
raise TypeError("cannot convert unicode objects to bytes")
# mybytes can also be passed as a sequence of integers on Py3.
# Test for this:
elif isinstance(mybytes, collections.Iterable):
mybytes = newbytes(mybytes)
b = mybytes if byteorder == 'big' else mybytes[::-1]
if len(b) == 0:
b = b'\x00'
# The encode() method has been disabled by newbytes, but Py2's
# str has it:
num = int(native(b).encode('hex'), 16)
if signed and (b[0] & 0x80):
num = num - (2 ** (len(b)*8))
return cls(num)
# def _twos_comp(val, bits):
# """compute the 2's compliment of int value val"""
# if( (val&(1<<(bits-1))) != 0 ):
# val = val - (1<<bits)
# return val
def from_bytes(cls, mybytes, byteorder='big', signed=False):
"""
Return the integer represented by the given array of bytes.
The mybytes argument must either support the buffer protocol or be an
iterable object producing bytes. Bytes and bytearray are examples of
built-in objects that support the buffer protocol.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument indicates whether two's complement is
used to represent the integer.
"""
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
if isinstance(mybytes, unicode):
raise TypeError("cannot convert unicode objects to bytes")
# mybytes can also be passed as a sequence of integers on Py3.
# Test for this:
elif isinstance(mybytes, collections.Iterable):
mybytes = newbytes(mybytes)
b = mybytes if byteorder == 'big' else mybytes[::-1]
if len(b) == 0:
b = b'\x00'
# The encode() method has been disabled by newbytes, but Py2's
# str has it:
num = int(native(b).encode('hex'), 16)
if signed and (b[0] & 0x80):
num = num - (2 ** (len(b)*8))
return cls(num)
# def _twos_comp(val, bits):
# """compute the 2's compliment of int value val"""
# if( (val&(1<<(bits-1))) != 0 ):
# val = val - (1<<bits)
# return val
def from_bytes(cls, mybytes, byteorder='big', signed=False):
"""
Return the integer represented by the given array of bytes.
The mybytes argument must either support the buffer protocol or be an
iterable object producing bytes. Bytes and bytearray are examples of
built-in objects that support the buffer protocol.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument indicates whether two's complement is
used to represent the integer.
"""
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
if isinstance(mybytes, unicode):
raise TypeError("cannot convert unicode objects to bytes")
# mybytes can also be passed as a sequence of integers on Py3.
# Test for this:
elif isinstance(mybytes, collections.Iterable):
mybytes = newbytes(mybytes)
b = mybytes if byteorder == 'big' else mybytes[::-1]
if len(b) == 0:
b = b'\x00'
# The encode() method has been disabled by newbytes, but Py2's
# str has it:
num = int(native(b).encode('hex'), 16)
if signed and (b[0] & 0x80):
num = num - (2 ** (len(b)*8))
return cls(num)
# def _twos_comp(val, bits):
# """compute the 2's compliment of int value val"""
# if( (val&(1<<(bits-1))) != 0 ):
# val = val - (1<<bits)
# return val
def from_bytes(cls, mybytes, byteorder='big', signed=False):
"""
Return the integer represented by the given array of bytes.
The mybytes argument must either support the buffer protocol or be an
iterable object producing bytes. Bytes and bytearray are examples of
built-in objects that support the buffer protocol.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument indicates whether two's complement is
used to represent the integer.
"""
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
if isinstance(mybytes, unicode):
raise TypeError("cannot convert unicode objects to bytes")
# mybytes can also be passed as a sequence of integers on Py3.
# Test for this:
elif isinstance(mybytes, collections.Iterable):
mybytes = newbytes(mybytes)
b = mybytes if byteorder == 'big' else mybytes[::-1]
if len(b) == 0:
b = b'\x00'
# The encode() method has been disabled by newbytes, but Py2's
# str has it:
num = int(native(b).encode('hex'), 16)
if signed and (b[0] & 0x80):
num = num - (2 ** (len(b)*8))
return cls(num)
# def _twos_comp(val, bits):
# """compute the 2's compliment of int value val"""
# if( (val&(1<<(bits-1))) != 0 ):
# val = val - (1<<bits)
# return val
def _BuildUri( handler ):
return native( ToBytes( urljoin( BaseRequest.server_location, handler ) ) )
def from_bytes(cls, mybytes, byteorder='big', signed=False):
"""
Return the integer represented by the given array of bytes.
The mybytes argument must either support the buffer protocol or be an
iterable object producing bytes. Bytes and bytearray are examples of
built-in objects that support the buffer protocol.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument indicates whether two's complement is
used to represent the integer.
"""
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
if isinstance(mybytes, unicode):
raise TypeError("cannot convert unicode objects to bytes")
# mybytes can also be passed as a sequence of integers on Py3.
# Test for this:
elif isinstance(mybytes, collections.Iterable):
mybytes = newbytes(mybytes)
b = mybytes if byteorder == 'big' else mybytes[::-1]
if len(b) == 0:
b = b'\x00'
# The encode() method has been disabled by newbytes, but Py2's
# str has it:
num = int(native(b).encode('hex'), 16)
if signed and (b[0] & 0x80):
num = num - (2 ** (len(b)*8))
return cls(num)
# def _twos_comp(val, bits):
# """compute the 2's compliment of int value val"""
# if( (val&(1<<(bits-1))) != 0 ):
# val = val - (1<<bits)
# return val
def from_bytes(cls, mybytes, byteorder='big', signed=False):
"""
Return the integer represented by the given array of bytes.
The mybytes argument must either support the buffer protocol or be an
iterable object producing bytes. Bytes and bytearray are examples of
built-in objects that support the buffer protocol.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument indicates whether two's complement is
used to represent the integer.
"""
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
if isinstance(mybytes, unicode):
raise TypeError("cannot convert unicode objects to bytes")
# mybytes can also be passed as a sequence of integers on Py3.
# Test for this:
elif isinstance(mybytes, collections.Iterable):
mybytes = newbytes(mybytes)
b = mybytes if byteorder == 'big' else mybytes[::-1]
if len(b) == 0:
b = b'\x00'
# The encode() method has been disabled by newbytes, but Py2's
# str has it:
num = int(native(b).encode('hex'), 16)
if signed and (b[0] & 0x80):
num = num - (2 ** (len(b)*8))
return cls(num)
# def _twos_comp(val, bits):
# """compute the 2's compliment of int value val"""
# if( (val&(1<<(bits-1))) != 0 ):
# val = val - (1<<bits)
# return val
def convertBiocDocToKindredDocs(document):
assert isinstance(document,bioc.BioCDocument)
kindredDocs = []
for passage in document.passages:
assert isinstance(passage,bioc.BioCPassage)
text = passage.text
offset = int(native(passage.offset))
entities = []
relations = []
for a in passage.annotations:
assert isinstance(a,bioc.BioCAnnotation)
entityType = a.infons['type']
sourceEntityID = a.id
position = []
segments = []
for l in a.locations:
assert isinstance(l,bioc.BioCLocation)
startPos = int(native(l.offset)) - offset
endPos = startPos + int(native(l.length))
position.append((startPos,endPos))
segments.append(text[startPos:endPos])
entityText = " ".join(segments)
e = kindred.Entity(entityType,entityText,position,sourceEntityID)
entities.append(e)
for r in passage.relations:
assert isinstance(r,bioc.BioCRelation)
relationType = r.infons['type']
arguments = []
for n in r.nodes:
assert isinstance(n,bioc.BioCNode)
arguments.append((n.role,n.refid))
arguments = sorted(arguments)
entityIDs = [ entityID for argName,entityID in arguments]
argNames = [ argName for argName,entityID in arguments]
r = kindred.Relation(relationType=relationType,entityIDs=entityIDs,argNames=argNames)
relations.append(r)
metadata = dict(document.infons)
metadata.update(passage.infons)
metadata['id'] = document.id
relData = kindred.Document(text,entities=entities,relations=relations,metadata=metadata)
kindredDocs.append(relData)
return kindredDocs
def to_bytes(self, length, byteorder='big', signed=False):
"""
Return an array of bytes representing an integer.
The integer is represented using length bytes. An OverflowError is
raised if the integer is not representable with the given number of
bytes.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument determines whether two's complement is
used to represent the integer. If signed is False and a negative integer
is given, an OverflowError is raised.
"""
if length < 0:
raise ValueError("length argument must be non-negative")
if length == 0 and self == 0:
return newbytes()
if signed and self < 0:
bits = length * 8
num = (2**bits) + self
if num <= 0:
raise OverflowError("int too smal to convert")
else:
if self < 0:
raise OverflowError("can't convert negative int to unsigned")
num = self
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
h = b'%x' % num
s = newbytes((b'0'*(len(h) % 2) + h).zfill(length*2).decode('hex'))
if signed:
high_set = s[0] & 0x80
if self > 0 and high_set:
raise OverflowError("int too big to convert")
if self < 0 and not high_set:
raise OverflowError("int too small to convert")
if len(s) > length:
raise OverflowError("int too big to convert")
return s if byteorder == 'big' else s[::-1]
def try_login(username, password):
conn = get_ldap_connection(configuration.get("ldap", "bind_user"),
configuration.get("ldap", "bind_password"))
search_filter = "(&({0})({1}={2}))".format(
configuration.get("ldap", "user_filter"),
configuration.get("ldap", "user_name_attr"),
username
)
search_scopes = {
"LEVEL": LEVEL,
"SUBTREE": SUBTREE,
"BASE": BASE
}
search_scope = LEVEL
if configuration.has_option("ldap", "search_scope"):
search_scope = SUBTREE if configuration.get("ldap", "search_scope") == "SUBTREE" else LEVEL
# todo: BASE or ONELEVEL?
res = conn.search(native(configuration.get("ldap", "basedn")),
native(search_filter),
search_scope=native(search_scope))
# todo: use list or result?
if not res:
log.info("Cannot find user %s", username)
raise AuthenticationError("Invalid username or password")
entry = conn.response[0]
conn.unbind()
if 'dn' not in entry:
# The search filter for the user did not return any values, so an
# invalid user was used for credentials.
raise AuthenticationError("Invalid username or password")
try:
conn = get_ldap_connection(entry['dn'], password)
except KeyError as e:
log.error("""
Unable to parse LDAP structure. If you're using Active Directory and not specifying an OU, you must set search_scope=SUBTREE in airflow.cfg.
%s
""" % traceback.format_exc())
raise LdapException("Could not parse LDAP structure. Try setting search_scope in airflow.cfg, or check logs")
if not conn:
log.info("Password incorrect for user %s", username)
raise AuthenticationError("Invalid username or password")
def to_bytes(self, length, byteorder='big', signed=False):
"""
Return an array of bytes representing an integer.
The integer is represented using length bytes. An OverflowError is
raised if the integer is not representable with the given number of
bytes.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument determines whether two's complement is
used to represent the integer. If signed is False and a negative integer
is given, an OverflowError is raised.
"""
if length < 0:
raise ValueError("length argument must be non-negative")
if length == 0 and self == 0:
return newbytes()
if signed and self < 0:
bits = length * 8
num = (2**bits) + self
if num <= 0:
raise OverflowError("int too smal to convert")
else:
if self < 0:
raise OverflowError("can't convert negative int to unsigned")
num = self
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
h = b'%x' % num
s = newbytes((b'0'*(len(h) % 2) + h).zfill(length*2).decode('hex'))
if signed:
high_set = s[0] & 0x80
if self > 0 and high_set:
raise OverflowError("int too big to convert")
if self < 0 and not high_set:
raise OverflowError("int too small to convert")
if len(s) > length:
raise OverflowError("int too big to convert")
return s if byteorder == 'big' else s[::-1]
def to_bytes(self, length, byteorder='big', signed=False):
"""
Return an array of bytes representing an integer.
The integer is represented using length bytes. An OverflowError is
raised if the integer is not representable with the given number of
bytes.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument determines whether two's complement is
used to represent the integer. If signed is False and a negative integer
is given, an OverflowError is raised.
"""
if length < 0:
raise ValueError("length argument must be non-negative")
if length == 0 and self == 0:
return newbytes()
if signed and self < 0:
bits = length * 8
num = (2**bits) + self
if num <= 0:
raise OverflowError("int too smal to convert")
else:
if self < 0:
raise OverflowError("can't convert negative int to unsigned")
num = self
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
h = b'%x' % num
s = newbytes((b'0'*(len(h) % 2) + h).zfill(length*2).decode('hex'))
if signed:
high_set = s[0] & 0x80
if self > 0 and high_set:
raise OverflowError("int too big to convert")
if self < 0 and not high_set:
raise OverflowError("int too small to convert")
if len(s) > length:
raise OverflowError("int too big to convert")
return s if byteorder == 'big' else s[::-1]
def to_bytes(self, length, byteorder='big', signed=False):
"""
Return an array of bytes representing an integer.
The integer is represented using length bytes. An OverflowError is
raised if the integer is not representable with the given number of
bytes.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument determines whether two's complement is
used to represent the integer. If signed is False and a negative integer
is given, an OverflowError is raised.
"""
if length < 0:
raise ValueError("length argument must be non-negative")
if length == 0 and self == 0:
return newbytes()
if signed and self < 0:
bits = length * 8
num = (2**bits) + self
if num <= 0:
raise OverflowError("int too smal to convert")
else:
if self < 0:
raise OverflowError("can't convert negative int to unsigned")
num = self
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
h = b'%x' % num
s = newbytes((b'0'*(len(h) % 2) + h).zfill(length*2).decode('hex'))
if signed:
high_set = s[0] & 0x80
if self > 0 and high_set:
raise OverflowError("int too big to convert")
if self < 0 and not high_set:
raise OverflowError("int too small to convert")
if len(s) > length:
raise OverflowError("int too big to convert")
return s if byteorder == 'big' else s[::-1]
def to_bytes(self, length, byteorder='big', signed=False):
"""
Return an array of bytes representing an integer.
The integer is represented using length bytes. An OverflowError is
raised if the integer is not representable with the given number of
bytes.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument determines whether two's complement is
used to represent the integer. If signed is False and a negative integer
is given, an OverflowError is raised.
"""
if length < 0:
raise ValueError("length argument must be non-negative")
if length == 0 and self == 0:
return newbytes()
if signed and self < 0:
bits = length * 8
num = (2**bits) + self
if num <= 0:
raise OverflowError("int too smal to convert")
else:
if self < 0:
raise OverflowError("can't convert negative int to unsigned")
num = self
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
h = b'%x' % num
s = newbytes((b'0'*(len(h) % 2) + h).zfill(length*2).decode('hex'))
if signed:
high_set = s[0] & 0x80
if self > 0 and high_set:
raise OverflowError("int too big to convert")
if self < 0 and not high_set:
raise OverflowError("int too small to convert")
if len(s) > length:
raise OverflowError("int too big to convert")
return s if byteorder == 'big' else s[::-1]
def to_bytes(self, length, byteorder='big', signed=False):
"""
Return an array of bytes representing an integer.
The integer is represented using length bytes. An OverflowError is
raised if the integer is not representable with the given number of
bytes.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument determines whether two's complement is
used to represent the integer. If signed is False and a negative integer
is given, an OverflowError is raised.
"""
if length < 0:
raise ValueError("length argument must be non-negative")
if length == 0 and self == 0:
return newbytes()
if signed and self < 0:
bits = length * 8
num = (2**bits) + self
if num <= 0:
raise OverflowError("int too smal to convert")
else:
if self < 0:
raise OverflowError("can't convert negative int to unsigned")
num = self
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
h = b'%x' % num
s = newbytes((b'0'*(len(h) % 2) + h).zfill(length*2).decode('hex'))
if signed:
high_set = s[0] & 0x80
if self > 0 and high_set:
raise OverflowError("int too big to convert")
if self < 0 and not high_set:
raise OverflowError("int too small to convert")
if len(s) > length:
raise OverflowError("int too big to convert")
return s if byteorder == 'big' else s[::-1]
def to_bytes(self, length, byteorder='big', signed=False):
"""
Return an array of bytes representing an integer.
The integer is represented using length bytes. An OverflowError is
raised if the integer is not representable with the given number of
bytes.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument determines whether two's complement is
used to represent the integer. If signed is False and a negative integer
is given, an OverflowError is raised.
"""
if length < 0:
raise ValueError("length argument must be non-negative")
if length == 0 and self == 0:
return newbytes()
if signed and self < 0:
bits = length * 8
num = (2**bits) + self
if num <= 0:
raise OverflowError("int too smal to convert")
else:
if self < 0:
raise OverflowError("can't convert negative int to unsigned")
num = self
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
h = b'%x' % num
s = newbytes((b'0'*(len(h) % 2) + h).zfill(length*2).decode('hex'))
if signed:
high_set = s[0] & 0x80
if self > 0 and high_set:
raise OverflowError("int too big to convert")
if self < 0 and not high_set:
raise OverflowError("int too small to convert")
if len(s) > length:
raise OverflowError("int too big to convert")
return s if byteorder == 'big' else s[::-1]
def to_bytes(self, length, byteorder='big', signed=False):
"""
Return an array of bytes representing an integer.
The integer is represented using length bytes. An OverflowError is
raised if the integer is not representable with the given number of
bytes.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument determines whether two's complement is
used to represent the integer. If signed is False and a negative integer
is given, an OverflowError is raised.
"""
if length < 0:
raise ValueError("length argument must be non-negative")
if length == 0 and self == 0:
return newbytes()
if signed and self < 0:
bits = length * 8
num = (2**bits) + self
if num <= 0:
raise OverflowError("int too smal to convert")
else:
if self < 0:
raise OverflowError("can't convert negative int to unsigned")
num = self
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
h = b'%x' % num
s = newbytes((b'0'*(len(h) % 2) + h).zfill(length*2).decode('hex'))
if signed:
high_set = s[0] & 0x80
if self > 0 and high_set:
raise OverflowError("int too big to convert")
if self < 0 and not high_set:
raise OverflowError("int too small to convert")
if len(s) > length:
raise OverflowError("int too big to convert")
return s if byteorder == 'big' else s[::-1]
def to_bytes(self, length, byteorder='big', signed=False):
"""
Return an array of bytes representing an integer.
The integer is represented using length bytes. An OverflowError is
raised if the integer is not representable with the given number of
bytes.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument determines whether two's complement is
used to represent the integer. If signed is False and a negative integer
is given, an OverflowError is raised.
"""
if length < 0:
raise ValueError("length argument must be non-negative")
if length == 0 and self == 0:
return newbytes()
if signed and self < 0:
bits = length * 8
num = (2**bits) + self
if num <= 0:
raise OverflowError("int too smal to convert")
else:
if self < 0:
raise OverflowError("can't convert negative int to unsigned")
num = self
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
h = b'%x' % num
s = newbytes((b'0'*(len(h) % 2) + h).zfill(length*2).decode('hex'))
if signed:
high_set = s[0] & 0x80
if self > 0 and high_set:
raise OverflowError("int too big to convert")
if self < 0 and not high_set:
raise OverflowError("int too small to convert")
if len(s) > length:
raise OverflowError("int too big to convert")
return s if byteorder == 'big' else s[::-1]
def to_bytes(self, length, byteorder='big', signed=False):
"""
Return an array of bytes representing an integer.
The integer is represented using length bytes. An OverflowError is
raised if the integer is not representable with the given number of
bytes.
The byteorder argument determines the byte order used to represent the
integer. If byteorder is 'big', the most significant byte is at the
beginning of the byte array. If byteorder is 'little', the most
significant byte is at the end of the byte array. To request the native
byte order of the host system, use `sys.byteorder' as the byte order value.
The signed keyword-only argument determines whether two's complement is
used to represent the integer. If signed is False and a negative integer
is given, an OverflowError is raised.
"""
if length < 0:
raise ValueError("length argument must be non-negative")
if length == 0 and self == 0:
return newbytes()
if signed and self < 0:
bits = length * 8
num = (2**bits) + self
if num <= 0:
raise OverflowError("int too smal to convert")
else:
if self < 0:
raise OverflowError("can't convert negative int to unsigned")
num = self
if byteorder not in ('little', 'big'):
raise ValueError("byteorder must be either 'little' or 'big'")
h = b'%x' % num
s = newbytes((b'0'*(len(h) % 2) + h).zfill(length*2).decode('hex'))
if signed:
high_set = s[0] & 0x80
if self > 0 and high_set:
raise OverflowError("int too big to convert")
if self < 0 and not high_set:
raise OverflowError("int too small to convert")
if len(s) > length:
raise OverflowError("int too big to convert")
return s if byteorder == 'big' else s[::-1]
