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/* ip port range, for libreswan
*
* Copyright (C) 2020 Andrew Cagney
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Library General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <https://www.gnu.org/licenses/lgpl-2.1.txt>.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
* License for more details.
*/
#include <arpa/inet.h> /* for ntohs() */
#include "jambuf.h"
#include "ip_port_range.h"
#include "lswlog.h" /* for pexpect() */
const ip_port_range unset_port_range;
ip_port_range port_range_from_ports(ip_port lo, ip_port hi)
{
ip_port_range r = {
.is_set = true,
.lo = lo.hport,
.hi = hi.hport,
};
pexpect(r.lo <= r.hi);
return r;
}
size_t jam_port_range(struct jambuf *buf, ip_port_range r)
{
if (!r.is_set) {
return jam(buf, "<unset-port-range>");
}
if (r.lo == r.hi) {
return jam(buf, "%u", r.lo);
} else {
return jam(buf, "%u-%u", r.lo, r.hi);
}
}
const char *str_port_range(ip_port_range port, port_range_buf *buf)
{
struct jambuf jambuf = ARRAY_AS_JAMBUF(buf->buf);
jam_port_range(&jambuf, port);
return buf->buf;
}
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