blob: fb5434f10c78ef15d429392a0c2fac9495b4ab60 [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*/
#ifndef CONTAINERS_H
#define CONTAINERS_H
#include <stdint.h>
#include <stdlib.h>
#include <time.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#if defined(__linux__)
#include <linux/wireguard.h>
#elif defined(__OpenBSD__)
#include <net/if_wg.h>
#endif
#ifndef WG_KEY_LEN
#define WG_KEY_LEN 32
#endif
/* Cross platform __kernel_timespec */
struct timespec64 {
int64_t tv_sec;
int64_t tv_nsec;
};
struct wgallowedip {
uint16_t family;
union {
struct in_addr ip4;
struct in6_addr ip6;
};
uint8_t cidr;
struct wgallowedip *next_allowedip;
};
enum {
WGPEER_REMOVE_ME = 1U << 0,
WGPEER_REPLACE_ALLOWEDIPS = 1U << 1,
WGPEER_HAS_PUBLIC_KEY = 1U << 2,
WGPEER_HAS_PRESHARED_KEY = 1U << 3,
WGPEER_HAS_PERSISTENT_KEEPALIVE_INTERVAL = 1U << 4
};
struct wgpeer {
uint32_t flags;
uint8_t public_key[WG_KEY_LEN];
uint8_t preshared_key[WG_KEY_LEN];
union {
struct sockaddr addr;
struct sockaddr_in addr4;
struct sockaddr_in6 addr6;
} endpoint;
struct timespec64 last_handshake_time;
uint64_t rx_bytes, tx_bytes;
uint16_t persistent_keepalive_interval;
struct wgallowedip *first_allowedip, *last_allowedip;
struct wgpeer *next_peer;
};
enum {
WGDEVICE_REPLACE_PEERS = 1U << 0,
WGDEVICE_HAS_PRIVATE_KEY = 1U << 1,
WGDEVICE_HAS_PUBLIC_KEY = 1U << 2,
WGDEVICE_HAS_LISTEN_PORT = 1U << 3,
WGDEVICE_HAS_FWMARK = 1U << 4
};
struct wgdevice {
char name[IFNAMSIZ];
uint32_t ifindex;
uint32_t flags;
uint8_t public_key[WG_KEY_LEN];
uint8_t private_key[WG_KEY_LEN];
uint32_t fwmark;
uint16_t listen_port;
struct wgpeer *first_peer, *last_peer;
};
#define for_each_wgpeer(__dev, __peer) for ((__peer) = (__dev)->first_peer; (__peer); (__peer) = (__peer)->next_peer)
#define for_each_wgallowedip(__peer, __allowedip) for ((__allowedip) = (__peer)->first_allowedip; (__allowedip); (__allowedip) = (__allowedip)->next_allowedip)
static inline void free_wgdevice(struct wgdevice *dev)
{
if (!dev)
return;
for (struct wgpeer *peer = dev->first_peer, *np = peer ? peer->next_peer : NULL; peer; peer = np, np = peer ? peer->next_peer : NULL) {
for (struct wgallowedip *allowedip = peer->first_allowedip, *na = allowedip ? allowedip->next_allowedip : NULL; allowedip; allowedip = na, na = allowedip ? allowedip->next_allowedip : NULL)
free(allowedip);
free(peer);
}
free(dev);
}
#endif