From: Bruce Lee <straightblast426@gmail.com>
Date: Tue, 30 Jul 2019 21:43:14 +0000 (+0100)
Subject: Auth: handle socket read errors in Dovecot authenticator
X-Git-Tag: exim-4.93-RC0~116
X-Git-Url: https://vcs.fsf.org/?a=commitdiff_plain;h=c9f1be94cc304f0343c93b66efa41a747d307fb1;p=exim.git

Auth: handle socket read errors in Dovecot authenticator
---

diff --git a/src/src/auths/dovecot.c b/src/src/auths/dovecot.c
index 9c0c9b313..4628863e0 100644
--- a/src/src/auths/dovecot.c
+++ b/src/src/auths/dovecot.c
@@ -215,8 +215,8 @@ for (;;)
   {
   if (socket_buffer_left == 0)
     {
-    socket_buffer_left = read(fd, sbuffer, sizeof(sbuffer));
-    if (socket_buffer_left == 0) { if (count == 0) return NULL; else break; }
+    if ((socket_buffer_left = read(fd, sbuffer, sizeof(sbuffer))) <= 0)
+      if (count == 0) return NULL; else break;
     p = 0;
     }