From fd563fb31226e5b62deac756a07b1ef2cee04769 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ole=20Andr=C3=A9=20Vadla=20Ravn=C3=A5s?= <oleavr@gmail.com>
Date: Tue, 3 Sep 2019 23:51:50 +0200
Subject: [PATCH] Improve RPC message detection

To avoid crashing if an agent does `send([])`.

Kudos to @H0r53 for reporting!

Fixes frida/frida#1008.
---
 frida/core.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/frida/core.py b/frida/core.py
index 1e05897..8789536 100644
--- a/frida/core.py
+++ b/frida/core.py
@@ -361,7 +361,7 @@ class Script(object):
             level = message['level']
             text = payload
             self._log_handler(level, text)
-        elif mtype == 'send' and isinstance(payload, list) and payload[0] == 'frida:rpc':
+        elif mtype == 'send' and isinstance(payload, list) and len(payload) > 0 and payload[0] == 'frida:rpc':
             request_id = payload[1]
             operation = payload[2]
             params = payload[3:]