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/* ip port (port), 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.
*/
#ifndef IP_PORT_H
#define IP_PORT_H
/*
* XXX: Something to force the order of the port.
*
* Probably overkill, but then port byte order and parameters keep
* being messed up.
*/
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include "err.h"
struct jambuf;
typedef struct {
/*
* XXX: 0 is interpreted as either 0, or any-port (is this a
* good idea?); host-byte ordered.
*/
unsigned hport;
} ip_port;
extern const ip_port unset_port; /* aka all ports? */
ip_port ip_hport(unsigned hport);
ip_port ip_nport(unsigned nport);
unsigned hport(ip_port port);
unsigned nport(ip_port port);
bool port_is_unset(ip_port port);
#define port_is_set !port_is_unset
#define port_eq(L,R) ((L).hport == (R).hport)
err_t ttoport(shunk_t text, ip_port *port);
/*
* XXX: to choices, which is better?
*
* str/jam can potentially deal with NULL and <unset> but should they?
*/
#define PRI_HPORT "%u"
#define pri_hport(PORT) hport(PORT)
#define PRI_NPORT "%04x"
#define pri_nport(PORT) hport(PORT) /* yes, hport() */
typedef struct {
char buf[sizeof("65535")+1/*canary*/];
} port_buf;
size_t jam_hport(struct jambuf *buf, ip_port port);
size_t jam_nport(struct jambuf *buf, ip_port port);
const char *str_hport(ip_port port, port_buf *buf);
const char *str_nport(ip_port port, port_buf *buf);
#endif
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