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[vsorcdistro/.git] / ryu / build / lib.linux-armv7l-2.7 / ryu / lib / ip.py

diff --git a/ryu/build/lib.linux-armv7l-2.7/ryu/lib/ip.py b/ryu/build/lib.linux-armv7l-2.7/ryu/lib/ip.py
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+# Copyright (C) 2015 Nippon Telegraph and Telephone Corporation.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import numbers
+import struct
+
+import netaddr
+
+from ryu.lib import addrconv
+from ryu.lib import type_desc
+
+
+def _valid_ip(strategy, bits, addr, flags=0):
+    addr = addr.split('/')
+    if len(addr) == 1:
+        return strategy(addr[0], flags)
+    elif len(addr) == 2:
+        return strategy(addr[0], flags) and 0 <= int(addr[1]) <= bits
+    else:
+        return False
+
+
+def valid_ipv4(addr, flags=0):
+    """
+    Wrapper function of "netaddr.valid_ipv4()".
+
+    The function extends "netaddr.valid_ipv4()" to enable to validate
+    IPv4 network address in "xxx.xxx.xxx.xxx/xx" format.
+
+    :param addr: IP address to be validated.
+    :param flags: See the "netaddr.valid_ipv4()" docs for details.
+    :return: True is valid. False otherwise.
+    """
+    return _valid_ip(netaddr.valid_ipv4, 32, addr, flags)
+
+
+def valid_ipv6(addr, flags=0):
+    """
+    Wrapper function of "netaddr.valid_ipv6()".
+
+    The function extends "netaddr.valid_ipv6()" to enable to validate
+    IPv4 network address in "xxxx:xxxx:xxxx::/xx" format.
+
+    :param addr: IP address to be validated.
+    :param flags: See the "netaddr.valid_ipv6()" docs for details.
+    :return: True is valid. False otherwise.
+    """
+    return _valid_ip(netaddr.valid_ipv6, 128, addr, flags)
+
+
+def ipv4_to_bin(ip):
+    """
+    Converts human readable IPv4 string to binary representation.
+    :param str ip: IPv4 address string
+    :return: binary representation of IPv4 address
+    """
+    return addrconv.ipv4.text_to_bin(ip)
+
+
+def ipv4_to_int(ip):
+    """
+    Converts human readable IPv4 string to int type representation.
+    :param str ip: IPv4 address string w.x.y.z
+    :returns: unsigned int of form w << 24 | x << 16 | y << 8 | z
+    """
+    return struct.unpack("!I", addrconv.ipv4.text_to_bin(ip))[0]
+
+
+def ipv4_to_str(ip):
+    """
+    Converts binary or int type representation to human readable IPv4 string.
+    :param ip: binary or int type representation of IPv4 address
+    :return: IPv4 address string
+    """
+    if isinstance(ip, numbers.Integral):
+        return addrconv.ipv4.bin_to_text(struct.pack("!I", ip))
+    else:
+        return addrconv.ipv4.bin_to_text(ip)
+
+
+def ipv6_to_bin(ip):
+    """
+    Converts human readable IPv6 string to binary representation.
+    :param str ip: IPv6 address string
+    :return: binary representation of IPv6 address
+    """
+    return addrconv.ipv6.text_to_bin(ip)
+
+
+def ipv6_to_int(ip):
+    """
+    Converts human readable IPv6 string to int type representation.
+    :param str ip: IPv6 address string
+    :returns: int type representation of IPv6 address
+    """
+    return type_desc.Int16.to_user(addrconv.ipv6.text_to_bin(ip))
+
+
+def ipv6_to_str(ip):
+    """
+    Converts binary or int type representation to human readable IPv6 string.
+    :param ip: binary or int type representation of IPv6 address
+    :return: IPv6 address string
+    """
+    if isinstance(ip, numbers.Integral):
+        return addrconv.ipv6.bin_to_text(type_desc.Int16.from_user(ip))
+    else:
+        return addrconv.ipv6.bin_to_text(ip)
+
+
+def text_to_bin(ip):
+    """
+    Converts human readable IPv4 or IPv6 string to binary representation.
+    :param str ip: IPv4 or IPv6 address string
+    :return: binary representation of IPv4 or IPv6 address
+    """
+
+    if ':' not in ip:
+        return ipv4_to_bin(ip)
+    else:
+        return ipv6_to_bin(ip)
+
+
+def text_to_int(ip):
+    """
+    Converts human readable IPv4 or IPv6 string to int type representation.
+    :param str ip: IPv4 or IPv6 address string
+    :return: int type representation of IPv4 or IPv6 address
+    """
+
+    if ':' not in ip:
+        return ipv4_to_int(ip)
+    else:
+        return ipv6_to_int(ip)
+
+
+def bin_to_text(ip):
+    """
+    Converts binary representation to human readable IPv4 or IPv6 string.
+    :param ip: binary representation of IPv4 or IPv6 address
+    :return: IPv4 or IPv6 address string
+    """
+    if len(ip) == 4:
+        return ipv4_to_str(ip)
+    elif len(ip) == 16:
+        return ipv6_to_str(ip)
+    else:
+        raise struct.error('Invalid ip address length: %s' % len(ip))