From 6697f85b5053e36a880f725ea87d1fbba5ee0563 Mon Sep 17 00:00:00 2001
From: Jeremy Cross <JCross@bomgar.com>
Date: Mon, 25 Jul 2016 22:55:04 +0000
Subject: [PATCH] sftp: ensure sftp_packet_read recognizes channel EOF to avoid
 infinite loop

Signed-off-by: Jeremy Cross <jcross@bomgar.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
(cherry picked from commit dbf72ffba2ad5b5694cd55aa1a7ca99053d20386)
---
 src/sftp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sftp.c b/src/sftp.c
index 6bcd8a69..fa2d3f44 100644
--- a/src/sftp.c
+++ b/src/sftp.c
@@ -334,7 +334,7 @@ sftp_packet sftp_packet_read(sftp_session sftp) {
   do {
     // read from channel until 4 bytes have been read or an error occurs
     s=ssh_channel_read(sftp->channel, buffer+r, 4-r, 0);
-    if (s < 0) {
+    if (s <= 0) {
       ssh_buffer_free(packet->payload);
       SAFE_FREE(packet);
       return NULL;