From: Thadeu Lima de Souza Cascardo <cascardo@cascardo.info>
Date: Sat, 15 Mar 2014 17:17:56 +0000 (-0300)
Subject: Check return code for write when sending messages to server.
X-Git-Tag: v2014.1~6
X-Git-Url: http://git.cascardo.info/?p=cascardo%2Flibreceita.git;a=commitdiff_plain;h=8aa37bde56500659e9e7d646e9b08f3a13a5eac0

Check return code for write when sending messages to server.

This not only avoids a warning, but prevents us from moving forward,
when we should report an error, when write fails.
---

diff --git a/rnetclient.c b/rnetclient.c
index d264c72..04869fd 100644
--- a/rnetclient.c
+++ b/rnetclient.c
@@ -161,8 +161,12 @@ static int handshake(int c)
 	char buffer[16];
 	int r;
 	buffer[0] = 1;
-	write(c, buffer, 1);
-	write(c, "00000000000000", 14);
+	r = write(c, buffer, 1);
+	if (r < 1)
+		return -1;
+	r = write(c, "00000000000000", 14);
+	if (r < 14)
+		return -1;
 	r = read(c, buffer, 1);
 	if (r != 1 && buffer[0] != 'E')
 		return -1;