From dbe29307588e0c23e19c3f02d9390e406aa422cc Mon Sep 17 00:00:00 2001
From: Niko Lehto <nikle@cendio.se>
Date: Mon, 3 Feb 2020 10:04:20 +0100
Subject: [PATCH] Handle errors from zlib/pako

---
 kasmweb/core/inflator.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/kasmweb/core/inflator.js b/kasmweb/core/inflator.js
index 726600f..39db447 100644
--- a/kasmweb/core/inflator.js
+++ b/kasmweb/core/inflator.js
@@ -35,7 +35,10 @@ export default class Inflate {
 
         this.strm.avail_out = this.chunkSize;
 
-        inflate(this.strm, 0); // Flush argument not used.
+        let ret = inflate(this.strm, 0); // Flush argument not used.
+        if (ret < 0) {
+            throw new Error("zlib inflate failed");
+        }
 
         if (this.strm.next_out != expected) {
             throw new Error("Incomplete zlib block");