Add ASN Description expansion module

REQUIREMENTS

@@ -8,3 +8,4 @@ pypssl
 redis
 pyeupi
 ipasn-redis
+asnhistory

modules/expansion/asn_history.py

@@ -0,0 +1,48 @@
+# -*- coding: utf-8 -*-
+
+import json
+from asnhistory import ASNHistory
+
+misperrors = {'error': 'Error'}
+mispattributes = {'input': ['asn'], 'output': ['freetext']}
+moduleinfo = {'version': '0.1', 'author': 'Raphaël Vinot',
+              'description': 'Query an ASN Description history service (https://github.com/CIRCL/ASN-Description-History.git)',
+              'module-type': ['expansion', 'hover']}
+
+moduleconfig = ['host', 'port', 'db']
+
+
+def handler(q=False):
+    if q is False:
+        return False
+    request = json.loads(q)
+    if request.get('asn'):
+        toquery = request['asn']
+    else:
+        misperrors['error'] = "Unsupported attributes type"
+        return misperrors
+
+    if not request.get('config') and not (request['config'].get('host') and
+                                          request['config'].get('port') and
+                                          request['config'].get('db')):
+        misperrors['error'] = 'ASN description history configuration is missing'
+        return misperrors
+
+    asnhistory = ASNHistory(host=request['config'].get('host'),
+                            port=request['config'].get('port'), db=request['config'].get('db'))
+
+    values = ['{} {}'.format(date.isoformat(), description) for date, description in asnhistory.get_all_descriptions(toquery)]
+
+    if not values:
+        misperrors['error'] = 'Unable to find descriptions for this ASN'
+        return misperrors
+    return {'results': [{'types': mispattributes['output'], 'values': values}]}
+
+
+def introspection():
+    return mispattributes
+
+
+def version():
+    moduleinfo['config'] = moduleconfig
+    return moduleinfo