From 2be04543d790d9ec29fa8522f07f221468ccd033 Mon Sep 17 00:00:00 2001
From: Zhang Xiao <xiao.zhang@windriver.com>
Date: Wed, 11 Jun 2014 14:01:16 +0800
Subject: [PATCH] tftp-hpa: bug fix on separated CR and LF

In ascii mode, if the CR and LF was separated into different transfer
blocks, LF will be just dropped instead of replacing the previous CR.
Add a checking on the first character to fix it.

Upstream-Status: Pending

Signed-off-by: Zhang Xiao <xiao.zhang@windriver.com>
---
 common/tftpsubs.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/common/tftpsubs.c b/common/tftpsubs.c
index b4d4ffe..b4ea3f2 100644
--- a/common/tftpsubs.c
+++ b/common/tftpsubs.c
@@ -207,6 +207,14 @@ int write_behind(FILE * file, int convert)
     p = buf;
     ct = count;
     count = 0;
+
+    /* Check the first character together with prevchar */
+    c = *p;
+    if ((prevchar == '\r') && (c == '\n')) {
+        lseek(fileno(file), -1, SEEK_CUR);
+        count++;
+    }
+
     while (ct--) {              /* loop over the buffer */
         c = *p++;               /* pick up a character */
         if (prevchar == '\r') { /* if prev char was cr */
-- 
2.34.1

