add support for client side route lookup in the roa creation form

see #329

svn path=/branches/tk329/; revision=4889

1 files changed, 69 insertions, 0 deletions

diff --git a/rpkid/rpki/gui/routeview/api.py b/rpkid/rpki/gui/routeview/api.py
new file mode 100644
index 00000000..cf699c9a
--- /dev/null
+++ b/rpkid/rpki/gui/routeview/api.py
@@ -0,0 +1,69 @@
+# Copyright (C) 2012  SPARTA, Inc. a Parsons Company
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND SPARTA DISCLAIMS ALL WARRANTIES WITH
+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS.  IN NO EVENT SHALL SPARTA BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+# PERFORMANCE OF THIS SOFTWARE.
+
+__version__ = '$Id$'
+
+import json
+from django import http
+from rpki.gui.routeview.models import RouteOrigin, RouteOriginV6
+from rpki import resource_set
+import rpki.exceptions
+
+def route_list(request):
+    """Implements the REST query against the route models to allow the client
+    to search for routes.
+
+    The only search currently supported is returning all the routes covered by
+    the prefix given in the 'prefix__in=' query string parameter.
+
+    By default, only returns up to 10 matching routes, but the client may
+    request a different limit with the 'count=' query string parameter.
+
+    """
+    hard_limit = 100
+
+    if request.method == 'GET' and 'prefix__in' in request.GET:
+        # find all routers covered by this prefix
+        match_prefix = request.GET.get('prefix__in')
+        # max number of items to return
+        limit = request.GET.get('count', 10)
+        if limit < 1 or limit > hard_limit:
+            return http.HttpResponseBadRequest('invalid value for count parameter')
+
+        try:
+            if ':' in match_prefix:
+                # v6
+                pfx = resource_set.resource_range_ipv6.parse_str(match_prefix)
+                manager = RouteOriginV6
+            else:
+                # v4
+                pfx = resource_set.resource_range_ipv4.parse_str(match_prefix)
+                manager = RouteOrigin
+        except (AssertionError, rpki.exceptions.BadIPResource), e:
+            return http.HttpResponseBadRequest(e)
+
+        try:
+            qs = manager.objects.filter(prefix_min__gte=pfx.min,
+                                        prefix_max__lte=pfx.max)[:limit]
+            # FIXME - a REST API should really return the url of the resource,
+            # but since we are combining two separate tables, the .pk is not a
+            # unique identifier.
+            matches = [{'prefix': str(x.as_resource_range()), 'asn': x.asn} for x in qs]
+        except IndexError:
+            # no matches
+            matches = []
+
+        return http.HttpResponse(json.dumps(matches), content_type='text/javascript')
+
+    return http.HttpResponseBadRequest()