commit fc96d4528f26abc9c1a992177c51a92b8c3b04c8 Author: Damian Johnson atagar@torproject.org Date: Sun Jan 24 12:34:34 2016 -0800

netstat support for ipv6 addresses

Supporting ipv6 addresses for the netstat resolver. Only bits we needed was the '-W' flag to avoid address truncation and converting 'tcp6' to 'tcp'. Thanks to both cypherpunks and toralf on...

https://trac.torproject.org/projects/tor/ticket/18079#comment:11 --- stem/util/connection.py | 11 ++++++----- test/unit/util/connection.py | 23 +++++++++++++++++++++++ 2 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/stem/util/connection.py b/stem/util/connection.py index 567ca9e..ea7819e 100644 --- a/stem/util/connection.py +++ b/stem/util/connection.py @@ -84,8 +84,8 @@ PORT_USES = None # port number => description RESOLVER_COMMAND = { Resolver.PROC: '',

- # -n = prevents dns lookups, -p = include process - Resolver.NETSTAT: 'netstat -np', + # -n = prevents dns lookups, -p = include process, -W = don't crop addresses (needed for ipv6) + Resolver.NETSTAT: 'netstat -npW',

# -a = show all TCP/UDP connections, -n = numeric addresses and ports, -o = include pid Resolver.NETSTAT_WINDOWS: 'netstat -ano', @@ -154,9 +154,7 @@ def get_connections(resolver, process_pid = None, process_name = None): .. versionadded:: 1.1.0

.. versionchanged:: 1.5.0 - Basic IPv6 support. This is incomplete in that resolver commands we run - may not surface IPv6 connections. But when present this function now - includes them in our results. + IPv6 support when resolving via netstat, lsof, or ss.

:param Resolver resolver: method of connection resolution to use :param int process_pid: pid of the process to retrieve @@ -243,6 +241,9 @@ def get_connections(resolver, process_pid = None, process_name = None):

protocol = attr['protocol'].lower()

+ if protocol == 'tcp6': + protocol = 'tcp' + if protocol not in ('tcp', 'udp'): _log('Unrecognized protocol (%s): %s' % (protocol, line)) continue diff --git a/test/unit/util/connection.py b/test/unit/util/connection.py index 2baedc5..e645c72 100644 --- a/test/unit/util/connection.py +++ b/test/unit/util/connection.py @@ -32,6 +32,16 @@ unix 3 [ ] STREAM CONNECTED 34164276 15843/tor unix 3 [ ] STREAM CONNECTED 7951 - """

+NETSTAT_IPV6_OUTPUT = """\ +Active Internet connections (w/o servers) +Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name +tcp6 0 0 5.9.158.75:5222 80.171.220.248:48910 ESTABLISHED 9820/beam +tcp6 0 0 2a01:4f8:190:514a::2:443 2001:638:a000:4140::ffff:189:41046 ESTABLISHED 1904/tor +tcp6 0 0 5.9.158.75:5269 146.255.57.226:38703 ESTABLISHED 9820/beam +tcp6 0 0 2a01:4f8:190:514a::2:443 2001:858:2:2:aabb:0:563b:1526:38260 ESTABLISHED 1904/tor +tcp6 0 0 5.9.158.75:5222 80.171.220.248:48966 ESTABLISHED 9820/beam +""" + NETSTAT_WINDOWS_OUTPUT = """\ Active Connections

@@ -215,6 +225,19 @@ class TestConnection(unittest.TestCase): call_mock.side_effect = OSError('Unable to call netstat') self.assertRaises(IOError, stem.util.connection.get_connections, Resolver.NETSTAT, process_pid = 1111)

+ @patch('stem.util.system.call', Mock(return_value = NETSTAT_IPV6_OUTPUT.split('\n'))) + def test_get_connections_by_netstat_ipv6(self): + """ + Checks the get_connections function with the netstat resolver for IPv6. + """ + + expected = [ + Connection('2a01:4f8:190:514a::2', 443, '2001:638:a000:4140::ffff:189', 41046, 'tcp', True), + Connection('2a01:4f8:190:514a::2', 443, '2001:858:2:2:aabb:0:563b:1526', 38260, 'tcp', True), + ] + + self.assertEqual(expected, stem.util.connection.get_connections(Resolver.NETSTAT, process_pid = 1904, process_name = 'tor')) + @patch('stem.util.system.call') def test_get_connections_by_windows_netstat(self, call_mock): """