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author | Eugene Kirpichov <ekirpichov@gmail.com> | 2012-09-26 18:23:40 +0000 |
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committer | Eugene Kirpichov <ekirpichov@gmail.com> | 2012-09-26 18:25:59 +0000 |
commit | 8a0c03c9e57926f4bc6c1a0ad9a87b9d59953e6e (patch) | |
tree | 248af9e99c2da85a2593ba360e090b036fa8feee /openstack/common/network_utils.py | |
parent | ac5067fb957556fbb2359e0bb8b99b6f733c6a04 (diff) | |
download | oslo-8a0c03c9e57926f4bc6c1a0ad9a87b9d59953e6e.tar.gz oslo-8a0c03c9e57926f4bc6c1a0ad9a87b9d59953e6e.tar.xz oslo-8a0c03c9e57926f4bc6c1a0ad9a87b9d59953e6e.zip |
Extracted parse_host_port into network_utils.
Change-Id: I77bcbf03a18659cfa62e99da9ba2136f8348022b
Diffstat (limited to 'openstack/common/network_utils.py')
-rw-r--r-- | openstack/common/network_utils.py | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/openstack/common/network_utils.py b/openstack/common/network_utils.py new file mode 100644 index 0000000..69f6732 --- /dev/null +++ b/openstack/common/network_utils.py @@ -0,0 +1,68 @@ +# vim: tabstop=4 shiftwidth=4 softtabstop=4 + +# Copyright 2012 OpenStack LLC. +# All Rights Reserved. +# +# 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. + +""" +Network-related utilities and helper functions. +""" + +import logging + +LOG = logging.getLogger(__name__) + + +def parse_host_port(address, default_port=None): + """ + Interpret a string as a host:port pair. + An IPv6 address MUST be escaped if accompanied by a port, + because otherwise ambiguity ensues: 2001:db8:85a3::8a2e:370:7334 + means both [2001:db8:85a3::8a2e:370:7334] and + [2001:db8:85a3::8a2e:370]:7334. + + >>> parse_host_port('server01:80') + ('server01', 80) + >>> parse_host_port('server01') + ('server01', None) + >>> parse_host_port('server01', default_port=1234) + ('server01', 1234) + >>> parse_host_port('[::1]:80') + ('::1', 80) + >>> parse_host_port('[::1]') + ('::1', None) + >>> parse_host_port('[::1]', default_port=1234) + ('::1', 1234) + >>> parse_host_port('2001:db8:85a3::8a2e:370:7334', default_port=1234) + ('2001:db8:85a3::8a2e:370:7334', 1234) + + """ + if address[0] == '[': + # Escaped ipv6 + _host, _port = address[1:].split(']') + host = _host + if ':' in _port: + port = _port.split(':')[1] + else: + port = default_port + else: + if address.count(':') == 1: + host, port = address.split(':') + else: + # 0 means ipv4, >1 means ipv6. + # We prohibit unescaped ipv6 addresses with port. + host = address + port = default_port + + return (host, None if port is None else int(port)) |