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Add check for leading zeroes in ip address when running makedns

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This adds a check for the presence of leading zeroes in any octet of IPv4 addresses for which DNS entries will be created.
This commit is contained in:
Ryan Bowen
2018-07-10 12:14:08 -04:00
committed by GitHub
parent 297137e1be
commit a75baf8215
1 changed files with 4 additions and 0 deletions
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4
xCAT-server/lib/xcat/plugins/ddns.pm
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@@ -437,6 +437,10 @@ sub process_request {
xCAT::SvrUtils::sendmsg(":Ignoring line $_ in /etc/hosts, address seems malformed.", $callback);
next;
}
if ($addr =~ /(?:^|\.)0+(?=\d)/ and $addr !~ /^[abcdef0123456789:]+$/) {
xCAT::SvrUtils::sendmsg(":Ignoring line $_ in /etc/hosts, ip address octets can not contain leading zeroes.", $callback);
next;
}
unless ($names =~ /^[a-z0-9\. \t\n-]+$/i) {
xCAT::SvrUtils::sendmsg(":Ignoring line $_ in /etc/hosts, names $names contain invalid characters (valid characters include a through z, numbers and the '-', but not '_'", $callback);
next;