def valid_str(addr, flags=0):
"""
:param addr: An IPv4 address in presentation (string) format.
:param flags: decides which rules are applied to the interpretation of the
addr value. Supported constants are INET_PTON and ZEROFILL. See the
netaddr.core docs for details.
:return: ``True`` if IPv4 address is valid, ``False`` otherwise.
"""
if addr == '':
raise AddrFormatError('Empty strings are not supported!')
validity = True
if flags & ZEROFILL:
addr = '.'.join(['%d' % int(i) for i in addr.split('.')])
try:
if flags & INET_PTON:
_inet_pton(AF_INET, addr)
else:
_inet_aton(addr)
except Exception:
validity = False
return validity
def valid_str(addr, flags=0):
"""
:param addr: An IPv4 address in presentation (string) format.
:param flags: decides which rules are applied to the interpretation of the
addr value. Supported constants are INET_PTON and ZEROFILL. See the
netaddr.core docs for details.
:return: ``True`` if IPv4 address is valid, ``False`` otherwise.
"""
if addr == "":
raise AddrFormatError("Empty strings are not supported!")
validity = True
if flags & ZEROFILL:
addr = ".".join(["%d" % int(i) for i in addr.split(".")])
try:
if flags & INET_PTON:
_inet_pton(AF_INET, addr)
else:
_inet_aton(addr)
except Exception:
validity = False
return validity
def valid_str(self, addr):
"""
@param addr: An IP address in presentation (string) format.
@return: C{True} if network address in string form is valid for this
address type, C{False} otherwise.
"""
if addr == '':
raise AddrFormatError('Empty strings are not supported!')
try:
_inet_aton(addr)
except:
return False
return True
def inet_aton(ip_string):
# On some 64 bit platforms, with some versions of Python, socket.inet_aton
# returns the a full 64 bit register, rather than the 32 bit value.
# The result of this is that the returned bit string is right-padded with
# 32 bits (4 chars) of zeroes. See:
# http://bugs.python.org/issue767150
# http://bugs.python.org/issue1008086
# This wrapper ensures the result is always truncated to the first 32 bits.
return _inet_aton(ip_string)[:4]
def inet_aton(ip_string):
# On some 64 bit platforms, with some versions of Python, socket.inet_aton
# returns the a full 64 bit register, rather than the 32 bit value.
# The result of this is that the returned bit string is right-padded with
# 32 bits (4 chars) of zeroes. See:
# http://bugs.python.org/issue767150
# http://bugs.python.org/issue1008086
# This wrapper ensures the result is always truncated to the first 32 bits.
return _inet_aton(ip_string)[:4]
def str_to_int(self, addr):
"""
@param addr: An IPv4 dotted decimal address in string form.
@return: An unsigned integer that is equivalent to value represented
by the IPv4 dotted decimal address string.
"""
if addr == '':
raise AddrFormatError('Empty strings are not supported!')
try:
return _struct.unpack('>I', _inet_aton(addr))[0]
except:
raise AddrFormatError('%r is not a valid IPv4 address string!' \
% addr)
def str_to_int(addr, flags=0):
"""
:param addr: An IPv4 dotted decimal address in string form.
:param flags: decides which rules are applied to the interpretation of the
addr value. Supported constants are INET_PTON and ZEROFILL. See the
netaddr.core docs for details.
:return: The equivalent unsigned integer for a given IPv4 address.
"""
if flags & ZEROFILL:
addr = ".".join(["%d" % int(i) for i in addr.split(".")])
try:
if flags & INET_PTON:
return _struct.unpack(">I", _inet_pton(AF_INET, addr))[0]
else:
return _struct.unpack(">I", _inet_aton(addr))[0]
except Exception:
raise AddrFormatError("%r is not a valid IPv4 address string!" % addr)
def str_to_int(addr, flags=0):
"""
:param addr: An IPv4 dotted decimal address in string form.
:param flags: decides which rules are applied to the interpretation of the
addr value. Supported constants are INET_PTON and ZEROFILL. See the
netaddr.core docs for details.
:return: The equivalent unsigned integer for a given IPv4 address.
"""
if flags & ZEROFILL:
addr = '.'.join(['%d' % int(i) for i in addr.split('.')])
try:
if flags & INET_PTON:
return _struct.unpack('>I', _inet_pton(AF_INET, addr))[0]
else:
return _struct.unpack('>I', _inet_aton(addr))[0]
except Exception:
raise AddrFormatError('%r is not a valid IPv4 address string!' % addr)