From 77da84fb217cb60436fe560d00b1440ac5aab13e Mon Sep 17 00:00:00 2001
From: Max Lv <max.c.lv@gmail.com>
Date: Mon, 9 Jan 2017 08:43:22 +0800
Subject: [PATCH] Validate hostname in redir mode #1047

---
 src/redir.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/redir.c b/src/redir.c
index 36e76cb6..b9cb5358 100644
--- a/src/redir.c
+++ b/src/redir.c
@@ -435,7 +435,8 @@ remote_send_cb(EV_P_ ev_io *w, int revents)
             buffer_t *abuf = &ss_addr_to_send;
             balloc(abuf, BUF_SIZE);
 
-            if (server->hostname_len > 0) { // HTTP/SNI
+            if (server->hostname_len > 0
+                    && validate_hostname(server->hostname, server->hostname_len)) { // HTTP/SNI
                 uint16_t port;
                 if (AF_INET6 == server->destaddr.ss_family) { // IPv6
                     port = (((struct sockaddr_in6 *)&(server->destaddr))->sin6_port);