131 lines
2.7 KiB
Plaintext
131 lines
2.7 KiB
Plaintext
=IP version 4 Strategy Module=
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Copyright (c) 2008-2012, David P. D. Moss. All rights reserved.
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Uses TEST-NET references throughout, as described in RFC 3330.
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{{{
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>>> from netaddr.strategy.ipv4 import *
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}}}
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==Basic Smoke Tests==
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{{{
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>>> b = '11000000.00000000.00000010.00000001'
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>>> i = 3221225985
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>>> t = (192, 0, 2, 1)
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>>> s = '192.0.2.1'
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>>> p = '\xc0\x00\x02\x01'
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>>> bin_val = '0b11000000000000000000001000000001'
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>>> bits_to_int(b) == 3221225985
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True
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>>> int_to_bits(i)
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'11000000.00000000.00000010.00000001'
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>>> int_to_str(i)
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'192.0.2.1'
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>>> int_to_words(i) == (192, 0, 2, 1)
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True
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>>> int_to_packed(i)
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'\xc0\x00\x02\x01'
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>>> int_to_bin(i)
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'0b11000000000000000000001000000001'
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>>> int_to_bin(i)
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'0b11000000000000000000001000000001'
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>>> bin_to_int(bin_val) == 3221225985
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True
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>>> words_to_int(t) == 3221225985
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True
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>>> words_to_int(list(t)) == 3221225985
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True
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>>> packed_to_int(p) == 3221225985
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True
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>>> valid_bin(bin_val)
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True
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}}}
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== inet_aton() Behavioural Tests ==
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inet_aton() is a very old system call and is very permissive with regard to what is assume is a valid IPv4 address. Unfortunately, it is also the most widely used by system software used in software today, so netaddr supports this behaviour by default.
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{{{
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>>> str_to_int('127') == 127
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True
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>>> str_to_int('0x7f') == 127
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True
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>>> str_to_int('0177') == 127
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True
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>>> str_to_int('127.1') == 2130706433
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True
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>>> str_to_int('0x7f.1') == 2130706433
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True
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>>> str_to_int('0177.1') == 2130706433
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True
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>>> str_to_int('127.0.0.1') == 2130706433
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True
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}}}
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== inet_pton() Behavioural Tests ==
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inet_pton() is a newer system call that supports both IPv4 and IPv6. It is a lot more strict about what it deems to be a valid IPv4 address and doesn't support many of the features found in inet_aton() such as support for non- decimal octets, partial numbers of octets, etc.
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{{{
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>>> str_to_int('127', flags=INET_PTON)
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Traceback (most recent call last):
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...
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AddrFormatError: '127' is not a valid IPv4 address string!
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>>> str_to_int('0x7f', flags=INET_PTON)
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Traceback (most recent call last):
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...
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AddrFormatError: '0x7f' is not a valid IPv4 address string!
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>>> str_to_int('0177', flags=INET_PTON)
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Traceback (most recent call last):
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...
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AddrFormatError: '0177' is not a valid IPv4 address string!
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>>> str_to_int('127.1', flags=INET_PTON)
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Traceback (most recent call last):
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...
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AddrFormatError: '127.1' is not a valid IPv4 address string!
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>>> str_to_int('0x7f.1', flags=INET_PTON)
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Traceback (most recent call last):
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...
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AddrFormatError: '0x7f.1' is not a valid IPv4 address string!
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>>> str_to_int('0177.1', flags=INET_PTON)
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Traceback (most recent call last):
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...
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AddrFormatError: '0177.1' is not a valid IPv4 address string!
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>>> str_to_int('127.0.0.1', flags=INET_PTON) == 2130706433
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True
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}}}
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