http_server: enable WHERE filtering for GET method

python/tools/http_server.py

@@ -32,10 +32,13 @@ class DhtServer(resource.Resource):
         self.node.bootstrap(b_url.hostname, str(b_url.port) if b_url.port else '4222')
 
     def render_GET(self, req):
-        uri = req.uri[1:]
-        h = dht.InfoHash(uri) if len(uri) == 40 else dht.InfoHash.get(uri.decode())
-        print('GET', '"'+uri.decode()+'"', h)
-        res = self.node.get(h)
+        uri = req.uri[1:].decode().rsplit('?', 1)[0]
+        h = dht.InfoHash(uri.encode()) if len(uri) == 40 else dht.InfoHash.get(uri)
+        w = dht.Where('WHERE '+''.join(k.decode()+'='+req.args[k][0].decode()+','
+            for k in req.args.keys()
+            if k in [b'id', b'user_type', b'value_type', b'owner', b'seq'])[:-1])
+        print('GET', '"'+uri+'"', h, w)
+        res = self.node.get(h, where=w)
         req.setHeader(b"content-type", b"application/json")
         return json.dumps({'{:x}'.format(v.id):{'base64':base64.b64encode(v.data).decode()} for v in res}).encode()