chore: import upstream snapshot with attribution

fail2ban/unblock_jail.cgi

@@ -0,0 +1,27 @@
+#!/usr/local/bin/perl
+# Unblock specific jail
+
+use strict;
+use warnings;
+no warnings 'redefine';
+no warnings 'uninitialized';
+require './fail2ban-lib.pl';
+our (%in, %text, %config);
+&ReadParse();
+&error_setup($text{'status_err_set'});
+
+my @jails = split(/\0/, $in{'jail'});
+
+# Error checks
+@jails || &error($text{'status_err_nojail'});
+
+# Processes jails actions
+my @jailsmod;
+foreach my $jail (@jails) {
+	&unblock_jail($jail);
+	push(@jailsmod, $jail);
+	}
+
+# Log and redirect
+&webmin_log('update', 'jail', join(", ", &unique(@jailsmod))) if (@jailsmod);
+&redirect("list_status.cgi");