Rename validator/ to config/

config/loopback.py

@@ -0,0 +1,66 @@
+#
+# Copyright (c) 2022 Pim van Pelt
+#
+# 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.
+#
+import logging
+import config.lcp as lcp
+import config.address as address
+
+def get_loopbacks(yaml):
+    """ Return a list of all loopbacks. """
+    ret = []
+    if 'loopbacks' in yaml:
+        for ifname, iface in yaml['loopbacks'].items():
+            ret.append(ifname)
+    return ret
+
+
+def get_by_name(yaml, ifname):
+    """ Return the loopback by name, if it exists. Return None otherwise. """
+    try:
+        if ifname in yaml['loopbacks']:
+            return ifname, yaml['loopbacks'][ifname]
+    except:
+        pass
+    return None, None
+
+
+def is_loopback(yaml, ifname):
+    """ Returns True if the interface name is an existing loopback. """
+    ifname, iface = get_by_name(yaml, ifname)
+    return not iface == None
+
+
+def validate_loopbacks(yaml):
+    result = True
+    msgs = []
+    logger = logging.getLogger('vppcfg.config')
+    logger.addHandler(logging.NullHandler())
+
+    if not 'loopbacks' in yaml:
+        return result, msgs
+
+    for ifname, iface in yaml['loopbacks'].items():
+        logger.debug("loopback %s" % iface)
+        if 'addresses' in iface and not 'lcp' in iface:
+            msgs.append("loopback %s has an address but no LCP" % ifname)
+            result = False
+        if 'lcp' in iface and not lcp.is_unique(yaml, iface['lcp']):
+            msgs.append("loopback %s does not have a unique LCP name %s" % (ifname, iface['lcp']))
+            result = False
+        if 'addresses' in iface:
+            for a in iface['addresses']:
+                if not address.is_allowed(yaml, ifname, iface['addresses'], a):
+                    msgs.append("loopback %s IP address %s conflicts with another" % (ifname, a))
+                    result = False
+
+    return result, msgs