import initial cut at rpki.gui.routeview app

svn path=/branches/tk161/; revision=4159

1 files changed, 68 insertions, 0 deletions

diff --git a/rpkid/rpki/gui/routeview/models.py b/rpkid/rpki/gui/routeview/models.py
new file mode 100644
index 00000000..411f4876
--- /dev/null
+++ b/rpkid/rpki/gui/routeview/models.py
@@ -0,0 +1,68 @@
+import binascii
+
+from django.db import models
+
+import rpki
+import rpki.resource_set
+import rpki.ipaddrs
+
+class PositiveHugeIntegerField(models.Field):
+
+    description = "Represents a 128-bit unsigned integer."
+
+    __metaclass__ = models.SubfieldBase
+
+    def db_type(self, connection):
+        if connection.settings_dict['ENGINE'] == 'django.db.backends.mysql':
+            return 'binary(16)'
+        return 'blob'
+
+    def to_python(self, value):
+        if isinstance(value, int):
+            return long(value)
+        if isinstance(value, long):
+            return value
+        return long(binascii.hexlify(value), 16)
+
+    def get_db_prep_value(self, value, connection, prepared=False):
+        return binascii.unhexlify('%032x' % value)
+
+class RouteOrigin(models.Model):
+
+    asn = models.PositiveIntegerField(help_text='origin AS', db_index=True)
+    family = models.PositiveSmallIntegerField(help_text='IP version')
+
+    # address stored as unsigned integer to faciliate lookups
+    prefix_min = PositiveHugeIntegerField(db_index=True)
+    prefix_max = PositiveHugeIntegerField(db_index=True)
+
+    def as_range(self):
+        """
+        Returns the prefix as a rpki.resource_set.resource_range_ip object.
+        """
+        cls = rpki.resource_set.resource_range_ipv4 if self.family == 4 else rpki.resource_set.resource_range_ipv6
+        ipcls = rpki.ipaddrs.v4addr if self.family == 4 else rpki.ipaddrs.v6addr
+        return cls(ipcls(self.prefix_min), ipcls(self.prefix_max))
+
+    def get_prefix_display(self):
+        """
+        Returns a string version of the prefix in the routing entry.
+        """
+        return str(self.as_range())
+
+    def prefixlen(self):
+        """
+        Returns the prefix length for this route object.
+        """
+        return self.as_range().prefixlen()
+
+    def __unicode__(self):
+        return u"AS%d's route origin for %s" % (self.asn, self.get_prefix_display())
+
+    class Meta:
+        # sort order reflects what "sh ip bgp" outputs
+        ordering = ( 'prefix_min', 'prefix_max', 'asn' )
+
+        unique_together = ('asn', 'prefix_min', 'prefix_max')
+
+# vim:sw=4 ts=8 expandtab