/
haproxy_validator.py
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/
haproxy_validator.py
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import logging
import inspect
import ConfigParser
import keystone_auth
import os
import sys
import haproxy_cert
class CustomAttr(object):
"""This type handles non-flat data-types like
int, str, bool.
"""
def __init__(self, key, value):
self._value = value
self._key = key
def validate(self, conf_list):
return
def post_validation(self, conf_list):
return
class CustomAttrTlsContainer(CustomAttr):
def __init__(self, key, value, custom_attr_conf_file=None):
super(CustomAttrTlsContainer, self).__init__(key, value)
if not custom_attr_conf_file:
logging.error("Missing custom attr conf file name in vrouter-agent.conf")
raise Exception()
if not self._read_config(custom_attr_conf_file):
logging.error("Error reading %s" % custom_attr_conf_file)
raise Exception()
cert_dict = self._parse_args(self._config, 'CERT')
if not cert_dict or not 'cert_manager' in cert_dict:
logging.error("Missing CERT section")
raise Exception()
if cert_dict['cert_manager'] == 'Barbican_Cert_Manager':
# Make sure keystone credentials are present
auth_dict = self._parse_args(self._config, 'KEYSTONE')
if not auth_dict:
logging.error("Missing KEYSTONE section")
raise Exception()
identity = keystone_auth.Identity(auth_dict)
else:
identity = None
self.cert_manager = getattr(haproxy_cert,
cert_dict['cert_manager'])(identity=identity)
def _read_config(self, conf_file):
config = ConfigParser.ConfigParser()
if not len(config.read(conf_file)):
return False
else:
self._config = config
return True
def _parse_args(self, config, section):
try:
return dict(config.items(section))
except Exception as e:
logging.error(str(e))
return None
def validate(self):
if self._key != 'tls_container':
return False
if (self.cert_manager and \
self.cert_manager._validate_tls_secret(self._value)):
tls_pem_string = self.cert_manager._populate_tls_pem(self._value)
self._value = tls_pem_string
return True
else:
logging.error("TLS container invalid")
return False
def post_validation(self):
return self._value
custom_attributes_dict = {
'global': {
'max_conn': {
'type': int,
'limits': [1, 65535],
'cmd': 'maxconn %d'
},
'max_conn_rate': {
'type': int,
'limits': [1, 65535],
'cmd': 'maxconnrate %d'
},
'max_sess_rate': {
'type': int,
'limits': [1, 65535],
'cmd': 'maxsessrate %d'
},
'max_ssl_conn': {
'type': int,
'limits': [1, 65535],
'cmd': 'maxsslconn %d'
},
'max_ssl_rate': {
'type': int,
'limits': [1, 65535],
'cmd': 'maxsslrate %d'
},
'ssl_ciphers': {
'type': str,
'limits': [1, 100],
'cmd': 'ssl-default-bind-ciphers %s'
},
'tune_http_max_header': {
'type': int,
'limits': [1, 128],
'cmd': 'tune.http.maxhdr %d'
},
'tune_ssl_max_record': {
'type': int,
'limits': [1, 16384],
'cmd': 'tune.ssl.maxrecord %d'
}
},
'default': {
'server_timeout': {
'type': int,
'limits': [1, 5000000],
'cmd': 'timeout server %d'
},
'client_timeout': {
'type': int,
'limits': [1, 5000000],
'cmd': 'timeout client %d'
},
'connect_timeout': {
'type': int,
'limits': [1, 5000000],
'cmd': 'timeout connect %d'
}
},
'vip': {
'http_server_close': {
'type': bool,
'limits': ['True', 'False'],
'cmd': '%soption http-server-close'
},
'rate_limit_sessions': {
'type': int,
'limits': [1, 65535],
'cmd': 'rate-limit sessions %d'
},
'tls_container': {
'type': CustomAttrTlsContainer,
'limits': None,
'cmd': None
}
},
'pool': {},
}
def validate_custom_attributes(config, section, custom_attr_conf_file=None):
section_dict = {}
if 'custom-attributes' in config and section in custom_attributes_dict:
custom_attributes = config['custom-attributes']
for key, value in custom_attributes.iteritems():
if key in custom_attributes_dict[section]:
#Sanitize the value
try:
type_attr = custom_attributes_dict[section][key]['type']
limits = custom_attributes_dict[section][key]['limits']
if type_attr == int:
value = type_attr(value)
if value in range(limits[0], limits[1]):
section_dict.update({key:value})
else:
logging.info("Skipping key: %s, value: %s due to" \
"validation failure" % (key, value))
elif type_attr == str:
if len(value) in range(limits[0], limits[1]):
section_dict.update({key:value})
else:
logging.info("Skipping key: %s, value: %s due to" \
"validation failure" % (key, value))
elif type_attr == bool:
if value in limits:
if value == 'True':
value = ''
elif value == 'False':
value = 'no '
section_dict.update({key:value})
else:
logging.info("Skipping key: %s, value: %s due to" \
"validation failure" % (key, value))
elif inspect.isclass(type_attr):
new_custom_attr = type_attr(key, value,
custom_attr_conf_file)
if new_custom_attr.validate():
value = new_custom_attr.post_validation()
section_dict.update({key:value})
else:
logging.info("Skipping key: %s, value: %s due to" \
"validation failure" % (key, value))
except Exception as e:
logging.error(str(e))
continue
return section_dict