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-rw-r--r--usr/local/www/diag_dns.php11
1 files changed, 5 insertions, 6 deletions
diff --git a/usr/local/www/diag_dns.php b/usr/local/www/diag_dns.php
index 63c119a..0596373 100644
--- a/usr/local/www/diag_dns.php
+++ b/usr/local/www/diag_dns.php
@@ -93,14 +93,13 @@ if ($_POST) {
$reqdfieldsn = explode(",", "Host");
do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);
- $host = trim($_POST['host']);
- $host_esc = escapeshellarg(trim($_POST['host']));
+ $host = trim($_POST['host'], " \t\n\r\0\x0B[]");
+ $host_esc = escapeshellarg($host);
- if (!is_hostname($host) && !is_ipaddr($host))
+ if (!is_hostname($host) && !is_ipaddr($host)) {
$input_errors[] = gettext("Host must be a valid hostname or IP address.");
-
- // Test resolution speed of each DNS server.
- if ((is_hostname($host) || is_ipaddr($host))) {
+ } else {
+ // Test resolution speed of each DNS server.
$dns_speeds = array();
$resolvconf_servers = `grep nameserver /etc/resolv.conf | cut -f2 -d' '`;
$dns_servers = explode("\n", trim($resolvconf_servers));
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