From 5b3fe4492c78124949bcba8c215e65388c116602 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Tue, 5 Nov 2019 09:31:47 +0100
Subject: [PATCH] server: workaround evil clients

If the clients attempt to send more data after we've instantiated the
terminal, just consume the data but ignore it.
---
 server.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/server.c b/server.c
index 8dc9018e..498ea2f3 100644
--- a/server.c
+++ b/server.c
@@ -102,6 +102,12 @@ fdm_client(struct fdm *fdm, int fd, int events, void *data)
 
     assert(events & EPOLLIN);
 
+    if (client->term != NULL) {
+        uint8_t dummy[128];
+        read(fd, dummy, sizeof(dummy));
+        return true;
+    }
+
     uint16_t term_env_len;
     if (recv(fd, &term_env_len, sizeof(term_env_len), 0) != sizeof(term_env_len))
         goto shutdown;