initial commit of code

peeringdb_server/validators.py

@@ -0,0 +1,51 @@
+"""
+peeringdb model / field validators
+"""
+
+import ipaddress
+
+from django.conf import settings
+from django.core.exceptions import ValidationError
+from django.utils.translation import ugettext_lazy as _
+
+from peeringdb_server.inet import network_is_pdb_valid
+
+
+def validate_address_space(prefix):
+    """
+    validate an ipaddress according to peeringdb specs
+
+    Arguments:
+        - prefix: ipaddress.IPv4Network or an ipaddress.IPv6Network
+
+    Raises:
+        - ValidationError on failed validation
+    """
+
+    if isinstance(prefix, unicode):
+        try:
+            prefix = ipaddress.ip_network(prefix)
+        except ValueError as exc:
+            raise ValidationError(_("Invalid prefix: {}").format(prefix))
+
+    if not network_is_pdb_valid(prefix):
+        raise ValidationError(_("Address space invalid: {}").format(prefix))
+
+
+def validate_info_prefixes4(value):
+    if value > settings.DATA_QUALITY_MAX_PREFIX_V4_LIMIT:
+        raise ValidationError(
+            _("Maximum value allowed {}").format(
+                settings.DATA_QUALITY_MAX_PREFIX_V4_LIMIT))
+    if value < 0:
+        raise ValidationError(_("Negative value not allowed"))
+
+
+def validate_info_prefixes6(value):
+    if value > settings.DATA_QUALITY_MAX_PREFIX_V6_LIMIT:
+        raise ValidationError(
+            _("Maximum value allowed {}").format(
+                settings.DATA_QUALITY_MAX_PREFIX_V6_LIMIT))
+
+    if value < 0:
+        raise ValidationError(_("Negative value not allowed"))