X-Git-Url: https://gerrit.akraino.org/r/gitweb?a=blobdiff_plain;f=validators%2Fsrc%2FTimeValidation.py;fp=validators%2Fsrc%2FTimeValidation.py;h=8327fb6e5fa8a99938b1b0c5c60386afb61296e7;hb=a7a7b7b7429a60e9ee34459857862e7e64e8d306;hp=0000000000000000000000000000000000000000;hpb=2ca95caf9ecd544ad031200a113fecb644eddd60;p=ta%2Fcm-plugins.git

diff --git a/validators/src/TimeValidation.py b/validators/src/TimeValidation.py
new file mode 100644
index 0000000..8327fb6
--- /dev/null
+++ b/validators/src/TimeValidation.py
@@ -0,0 +1,143 @@
+#!/usr/bin/python
+# Copyright 2019 Nokia
+#
+# 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.
+
+# pylint: disable=line-too-long
+
+import logging
+import json
+import pytz
+import yaml
+import requests
+from django.core.validators import URLValidator
+from django.core.exceptions import ValidationError
+
+from cmframework.apis import cmvalidator
+from cmdatahandlers.api import validation
+
+
+class TimeValidation(cmvalidator.CMValidator):
+    domain = 'cloud.time'
+    supported_authentication_types = ['none', 'crypto', 'symmetric']
+
+    def get_subscription_info(self):
+        logging.debug('get_subscription info called')
+        return r'^cloud\.time$'
+
+    def validate_set(self, dict_key_value):
+        ntp_attr = 'ntp_servers'
+        logging.debug('validate_set called with %s' % str(dict_key_value))
+
+        for key, value in dict_key_value.iteritems():
+            value_dict = json.loads(value)
+            if not value_dict:
+                raise validation.ValidationError('No value for %s' % key)
+            if not isinstance(value_dict, dict):
+                raise validation.ValidationError('%s value is not a dict' % self.domain)
+
+            if key == self.domain:
+                ntp_list = value_dict.get(ntp_attr)
+
+                self.validate_ntp(ntp_list)
+
+                attr = 'zone'
+                zone = value_dict.get(attr)
+                if zone:
+                    self.validate_timezone(zone)
+                else:
+                    raise validation.ValidationError('Missing timezone %s' % attr)
+
+                auth_type = value_dict.get('auth_type')
+                if auth_type:
+                    self.validate_authtype(auth_type)
+                else:
+                    raise validation.ValidationError('Missing authentication type for NTP')
+
+                filepath = value_dict.get('serverkeys_path')
+                if auth_type != 'none' and filepath == '':
+                    raise validation.ValidationError('The serverkeys_path is missing')
+                elif auth_type == 'none':
+                    pass
+                else:
+                    self.validate_filepath(filepath)
+                    self.validate_yaml_format(filepath, auth_type)
+            else:
+                raise validation.ValidationError('Unexpected configuration %s' % key)
+
+    def validate_delete(self, dict_key_value):
+        logging.debug('validate_delete called with %s' % str(dict_key_value))
+        raise validation.ValidationError('%s cannot be deleted' % self.domain)
+
+    def validate_ntp(self, ntp_list):
+        if not ntp_list:
+            raise validation.ValidationError('Missing NTP configuration')
+
+        if not isinstance(ntp_list, list):
+            raise validation.ValidationError('NTP servers value must be a list')
+        utils = validation.ValidationUtils()
+        for ntp in ntp_list:
+            utils.validate_ip_address(ntp)
+
+    def validate_timezone(self, value):
+        try:
+            pytz.timezone(value)
+        except pytz.UnknownTimeZoneError as exc:
+            raise validation.ValidationError("Invalid time zone: {0}".format(exc))
+
+    def validate_authtype(self, auth_type):
+        if auth_type not in TimeValidation.supported_authentication_types:
+            raise validation.ValidationError(
+                'The provided authentication method for NTP is not supported')
+
+    def validate_filepath(self, filepath):
+        try:
+            val = URLValidator()
+            val(filepath)
+        except ValidationError:
+            raise validation.ValidationError('The url: "%s" is not a valid url!' % filepath)
+
+    def validate_yaml_format(self, url, auth_type):
+        if url.startswith("file://"):
+            path = url.lstrip("file://")
+            try:
+                with open(path) as f:
+                    f_content = f.read()
+            except IOError:
+                raise validation.ValidationError('The file: "%s" is not present on the system!'
+                                                 % url)
+        else:
+            try:
+                r = requests.get(url)
+                if r['status_code'] != 200:
+                    raise requests.exceptions.ConnectionError()
+                f_content = r['content']
+            except requests.exceptions.ConnectionError:
+                raise validation.ValidationError('The url: "%s" is not reachable!' % url)
+        try:
+            yaml_content = yaml.load(f_content)
+        except yaml.YAMLError:
+            raise validation.ValidationError('The validation of the yamlfile failed!')
+        for item in yaml_content:
+            srv = item.keys()[0]
+            if auth_type == 'symmetric' and not isinstance(item[srv], str):
+                raise validation.ValidationError('The yamlfile contains invalid data! '
+                                                 '(The authentication method looks like it\'s symmetric.)')
+            elif auth_type == 'crypto' and isinstance(item[srv], dict):
+                if (item[srv]['type'] != 'iff' or item[srv]['type'] != 'gq' or
+                    item[srv]['type'] != 'mv')\
+                   and (not isinstance(item[srv]['keys'], list)):
+                    raise validation.ValidationError('The yamlfile contains invalid data! '
+                                                     '(The authentication method looks like it\'s crypto.)')
+            else:
+                raise validation.ValidationError('The yamlfile contains invalid data!')