From 41900b72f31a1bd0eebe2f58a8598bfab25f0003 Mon Sep 17 00:00:00 2001 From: Daniel Watkins Date: Fri, 9 Oct 2015 14:01:11 +0100 Subject: Handle escaped quotes in WALinuxAgentShim.find_endpoint. This fixes bug 1488891. --- tests/unittests/test_datasource/test_azure_helper.py | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'tests/unittests') diff --git a/tests/unittests/test_datasource/test_azure_helper.py b/tests/unittests/test_datasource/test_azure_helper.py index a5228870..68af31cd 100644 --- a/tests/unittests/test_datasource/test_azure_helper.py +++ b/tests/unittests/test_datasource/test_azure_helper.py @@ -97,7 +97,8 @@ class TestFindEndpoint(TestCase): if not use_hex: ip_address_repr = struct.pack( '>L', int(ip_address_repr.replace(':', ''), 16)) - ip_address_repr = '"{0}"'.format(ip_address_repr.decode('utf-8')) + ip_address_repr = '"{0}"'.format( + ip_address_repr.decode('utf-8').replace('"', '\\"')) return '\n'.join([ 'lease {', ' interface "eth0";', @@ -125,6 +126,13 @@ class TestFindEndpoint(TestCase): self.assertEqual(ip_address, azure_helper.WALinuxAgentShim.find_endpoint()) + def test_packed_string_with_escaped_quote(self): + ip_address = '100.72.34.108' + file_content = self._build_lease_content(ip_address, use_hex=False) + self.load_file.return_value = file_content + self.assertEqual(ip_address, + azure_helper.WALinuxAgentShim.find_endpoint()) + def test_latest_lease_used(self): ip_addresses = ['4.3.2.1', '98.76.54.32'] file_content = '\n'.join([self._build_lease_content(ip_address) -- cgit v1.2.3 From 20dc4190e27c7778cfa6c2943961f2ad27e14b48 Mon Sep 17 00:00:00 2001 From: Daniel Watkins Date: Fri, 9 Oct 2015 14:01:11 +0100 Subject: Handle colons in packed strings in WALinuxAgentShim.find_endpoint. This fixes bug 1488896. --- cloudinit/sources/helpers/azure.py | 12 +++++++----- tests/unittests/test_datasource/test_azure_helper.py | 7 +++++++ 2 files changed, 14 insertions(+), 5 deletions(-) (limited to 'tests/unittests') diff --git a/cloudinit/sources/helpers/azure.py b/cloudinit/sources/helpers/azure.py index 33003da0..21b4cd21 100644 --- a/cloudinit/sources/helpers/azure.py +++ b/cloudinit/sources/helpers/azure.py @@ -225,16 +225,18 @@ class WALinuxAgentShim(object): value = line.strip(' ').split(' ', 2)[-1].strip(';\n"') if value is None: raise Exception('No endpoint found in DHCP config.') - if ':' in value: + unescaped_value = value.replace('\\', '') + if len(unescaped_value) > 4: hex_string = '' - for hex_pair in value.split(':'): + for hex_pair in unescaped_value.split(':'): if len(hex_pair) == 1: hex_pair = '0' + hex_pair hex_string += hex_pair - value = struct.pack('>L', int(hex_string.replace(':', ''), 16)) + packed_bytes = struct.pack( + '>L', int(hex_string.replace(':', ''), 16)) else: - value = value.replace('\\', '').encode('utf-8') - endpoint_ip_address = socket.inet_ntoa(value) + packed_bytes = unescaped_value.encode('utf-8') + endpoint_ip_address = socket.inet_ntoa(packed_bytes) LOG.debug('Azure endpoint found at %s', endpoint_ip_address) return endpoint_ip_address diff --git a/tests/unittests/test_datasource/test_azure_helper.py b/tests/unittests/test_datasource/test_azure_helper.py index 68af31cd..5f906837 100644 --- a/tests/unittests/test_datasource/test_azure_helper.py +++ b/tests/unittests/test_datasource/test_azure_helper.py @@ -133,6 +133,13 @@ class TestFindEndpoint(TestCase): self.assertEqual(ip_address, azure_helper.WALinuxAgentShim.find_endpoint()) + def test_packed_string_containing_a_colon(self): + ip_address = '100.72.58.108' + file_content = self._build_lease_content(ip_address, use_hex=False) + self.load_file.return_value = file_content + self.assertEqual(ip_address, + azure_helper.WALinuxAgentShim.find_endpoint()) + def test_latest_lease_used(self): ip_addresses = ['4.3.2.1', '98.76.54.32'] file_content = '\n'.join([self._build_lease_content(ip_address) -- cgit v1.2.3 From a9f5d20bc55abc5ff12a5ce1cec1125173f11c7b Mon Sep 17 00:00:00 2001 From: Daniel Watkins Date: Fri, 9 Oct 2015 14:01:11 +0100 Subject: Convert test helper to staticmethod. --- tests/unittests/test_datasource/test_azure_helper.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'tests/unittests') diff --git a/tests/unittests/test_datasource/test_azure_helper.py b/tests/unittests/test_datasource/test_azure_helper.py index 5f906837..1746f6b8 100644 --- a/tests/unittests/test_datasource/test_azure_helper.py +++ b/tests/unittests/test_datasource/test_azure_helper.py @@ -90,7 +90,8 @@ class TestFindEndpoint(TestCase): self.assertRaises(Exception, azure_helper.WALinuxAgentShim.find_endpoint) - def _build_lease_content(self, ip_address, use_hex=True): + @staticmethod + def _build_lease_content(ip_address, use_hex=True): ip_address_repr = ':'.join( [hex(int(part)).replace('0x', '') for part in ip_address.split('.')]) -- cgit v1.2.3 From 2f5a5ed9f9c5ba390a693bc441ab18cbcdff9623 Mon Sep 17 00:00:00 2001 From: Daniel Watkins Date: Fri, 9 Oct 2015 14:01:11 +0100 Subject: Refactor tests to test helper method directly, and remove need for test helper. --- .../unittests/test_datasource/test_azure_helper.py | 84 +++++++++++----------- 1 file changed, 42 insertions(+), 42 deletions(-) (limited to 'tests/unittests') diff --git a/tests/unittests/test_datasource/test_azure_helper.py b/tests/unittests/test_datasource/test_azure_helper.py index 1746f6b8..fed2a7d8 100644 --- a/tests/unittests/test_datasource/test_azure_helper.py +++ b/tests/unittests/test_datasource/test_azure_helper.py @@ -91,63 +91,63 @@ class TestFindEndpoint(TestCase): azure_helper.WALinuxAgentShim.find_endpoint) @staticmethod - def _build_lease_content(ip_address, use_hex=True): - ip_address_repr = ':'.join( - [hex(int(part)).replace('0x', '') - for part in ip_address.split('.')]) - if not use_hex: - ip_address_repr = struct.pack( - '>L', int(ip_address_repr.replace(':', ''), 16)) - ip_address_repr = '"{0}"'.format( - ip_address_repr.decode('utf-8').replace('"', '\\"')) + def _build_lease_content(encoded_address): return '\n'.join([ 'lease {', ' interface "eth0";', - ' option unknown-245 {0};'.format(ip_address_repr), + ' option unknown-245 {0};'.format(encoded_address), '}']) - def test_hex_string(self): - ip_address = '98.76.54.32' - file_content = self._build_lease_content(ip_address) + def test_latest_lease_used(self): + encoded_addresses = ['5:4:3:2', '4:3:2:1'] + file_content = '\n'.join([self._build_lease_content(encoded_address) + for encoded_address in encoded_addresses]) self.load_file.return_value = file_content - self.assertEqual(ip_address, + self.assertEqual(encoded_addresses[-1].replace(':', '.'), azure_helper.WALinuxAgentShim.find_endpoint()) + +class TestExtractIpAddressFromLeaseValue(TestCase): + + def test_hex_string(self): + ip_address, encoded_address = '98.76.54.32', '62:4c:36:20' + self.assertEqual( + ip_address, + azure_helper.WALinuxAgentShim.get_ip_from_lease_value( + encoded_address + )) + def test_hex_string_with_single_character_part(self): - ip_address = '4.3.2.1' - file_content = self._build_lease_content(ip_address) - self.load_file.return_value = file_content - self.assertEqual(ip_address, - azure_helper.WALinuxAgentShim.find_endpoint()) + ip_address, encoded_address = '4.3.2.1', '4:3:2:1' + self.assertEqual( + ip_address, + azure_helper.WALinuxAgentShim.get_ip_from_lease_value( + encoded_address + )) def test_packed_string(self): - ip_address = '98.76.54.32' - file_content = self._build_lease_content(ip_address, use_hex=False) - self.load_file.return_value = file_content - self.assertEqual(ip_address, - azure_helper.WALinuxAgentShim.find_endpoint()) + ip_address, encoded_address = '98.76.54.32', 'bL6 ' + self.assertEqual( + ip_address, + azure_helper.WALinuxAgentShim.get_ip_from_lease_value( + encoded_address + )) def test_packed_string_with_escaped_quote(self): - ip_address = '100.72.34.108' - file_content = self._build_lease_content(ip_address, use_hex=False) - self.load_file.return_value = file_content - self.assertEqual(ip_address, - azure_helper.WALinuxAgentShim.find_endpoint()) + ip_address, encoded_address = '100.72.34.108', 'dH\\"l' + self.assertEqual( + ip_address, + azure_helper.WALinuxAgentShim.get_ip_from_lease_value( + encoded_address + )) def test_packed_string_containing_a_colon(self): - ip_address = '100.72.58.108' - file_content = self._build_lease_content(ip_address, use_hex=False) - self.load_file.return_value = file_content - self.assertEqual(ip_address, - azure_helper.WALinuxAgentShim.find_endpoint()) - - def test_latest_lease_used(self): - ip_addresses = ['4.3.2.1', '98.76.54.32'] - file_content = '\n'.join([self._build_lease_content(ip_address) - for ip_address in ip_addresses]) - self.load_file.return_value = file_content - self.assertEqual(ip_addresses[-1], - azure_helper.WALinuxAgentShim.find_endpoint()) + ip_address, encoded_address = '100.72.58.108', 'dH:l' + self.assertEqual( + ip_address, + azure_helper.WALinuxAgentShim.get_ip_from_lease_value( + encoded_address + )) class TestGoalStateParsing(TestCase): -- cgit v1.2.3