ipc: cleanup openbsd support
We also add a wg_if.h in the fallback include path. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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				@ -38,7 +38,9 @@ endif
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PLATFORM ?= $(shell uname -s | tr '[:upper:]' '[:lower:]')
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CFLAGS ?= -O3
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CFLAGS += -idirafter uapi
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ifneq ($(wildcard uapi/$(PLATFORM)/.),)
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CFLAGS += -idirafter uapi/$(PLATFORM)
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endif
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CFLAGS += -std=gnu99 -D_GNU_SOURCE
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CFLAGS += -Wall -Wextra
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CFLAGS += -MMD -MP
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@ -12,7 +12,15 @@
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#include <sys/socket.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#if defined(__linux__)
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#include <linux/wireguard.h>
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#elif defined(__OpenBSD__)
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#include <net/if_wg.h>
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#endif
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#ifndef WG_KEY_LEN
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#define WG_KEY_LEN 32
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#endif
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/* Cross platform __kernel_timespec */
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struct timespec64 {
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										195
									
								
								src/ipc.c
									
									
									
									
									
								
							
							
						
						
									
										195
									
								
								src/ipc.c
									
									
									
									
									
								
							@ -862,7 +862,7 @@ static void coalesce_peers(struct wgdevice *device)
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	struct wgpeer *old_next_peer, *peer = device->first_peer;
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	while (peer && peer->next_peer) {
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		if (memcmp(peer->public_key, peer->next_peer->public_key, WG_KEY_LEN)) {
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		if (memcmp(peer->public_key, peer->next_peer->public_key, sizeof(peer->public_key))) {
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			peer = peer->next_peer;
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			continue;
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		}
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@ -926,42 +926,38 @@ out:
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#endif
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#ifdef __OpenBSD__
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int s = -1;
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void
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getsock()
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static int get_dgram_socket(void)
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{
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	if (s < 0)
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		s = socket(AF_INET, SOCK_DGRAM, 0);
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	static int sock = -1;
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	if (sock < 0)
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		sock = socket(AF_INET, SOCK_DGRAM, 0);
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	return sock;
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}
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static int kernel_get_wireguard_interfaces(struct string_list *list)
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{
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	struct ifgroupreq ifgr;
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	struct ifgroupreq ifgr = { .ifgr_name = "wg" };
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	struct ifg_req *ifg;
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	size_t len = 0;
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	int ret = 0;
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	int s = get_dgram_socket(), ret = 0;
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	getsock();
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	if (s < 0)
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		return -errno;
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	bzero(&ifgr, sizeof(ifgr));
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	strlcpy(ifgr.ifgr_name, "wg", sizeof(ifgr.ifgr_name));
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	if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) < 0)
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		return errno == ENOENT ? 0 : -errno;
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	if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
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		return errno;
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	len = ifgr.ifgr_len;
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	if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
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		return errno;
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	if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1) {
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		ret = errno;
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	ifgr.ifgr_groups = calloc(1, ifgr.ifgr_len);
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	if (!ifgr.ifgr_groups)
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		return -errno;
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	if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) < 0) {
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		ret = -errno;
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		goto out;
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	}
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	for (ifg = ifgr.ifgr_groups; ifg && len > 0; ifg++) {
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	for (ifg = ifgr.ifgr_groups; ifg && ifgr.ifgr_len > 0; ++ifg) {
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		if ((ret = string_list_add(list, ifg->ifgrq_member)) < 0)
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			goto out;
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		len -= sizeof(struct ifg_req);
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		ifgr.ifgr_len -= sizeof(struct ifg_req);
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	}
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out:
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@ -971,40 +967,34 @@ out:
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static int kernel_get_device(struct wgdevice **device, const char *iface)
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{
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	struct wg_data_io wgdata;
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	struct wg_data_io wgdata = { .wgd_size = 0 };
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	struct wg_interface_io *wg_iface;
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	struct wg_peer_io *wg_peer;
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	struct wg_aip_io *wg_aip;
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	struct wgdevice *dev;
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	struct wgpeer *peer;
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	struct wgallowedip *aip;
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	int s = get_dgram_socket(), ret;
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	size_t size;
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	getsock();
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	*device = NULL;
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	strlcpy(wgdata.wgd_name, iface, sizeof(wgdata.wgd_name));
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	wgdata.wgd_size = size = 0;
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	wgdata.wgd_mem = NULL;
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	if (ioctl(s, SIOCGWG, (caddr_t)&wgdata) == -1 &&
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	    (errno == ENOTTY || errno == EPERM))
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	if (s < 0)
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		return -errno;
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	while (size < wgdata.wgd_size) {
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		size = wgdata.wgd_size;
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		wgdata.wgd_mem = realloc(wgdata.wgd_mem, size);
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		if (ioctl(s, SIOCGWG, (caddr_t)&wgdata) == -1)
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			return -errno;
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	*device = NULL;
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	strlcpy(wgdata.wgd_name, iface, sizeof(wgdata.wgd_name));
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	for (size_t last_size = wgdata.wgd_size;; last_size = wgdata.wgd_size) {
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		if (ioctl(s, SIOCGWG, (caddr_t)&wgdata) < 0)
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			goto out;
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		if (last_size >= wgdata.wgd_size)
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			break;
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		wgdata.wgd_mem = realloc(wgdata.wgd_mem, wgdata.wgd_size);
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		if (!wgdata.wgd_mem)
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			goto out;
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	}
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	wg_iface = wgdata.wgd_mem;
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	if ((dev = calloc(1, sizeof(*dev))) == NULL)
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		return -errno;
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	dev = calloc(1, sizeof(*dev));
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	if (!dev)
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		goto out;
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	strlcpy(dev->name, iface, sizeof(dev->name));
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	if (wg_iface->i_flags & WG_INTERFACE_HAS_RTABLE) {
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@ -1013,23 +1003,24 @@ static int kernel_get_device(struct wgdevice **device, const char *iface)
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	}
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	if (wg_iface->i_flags & WG_INTERFACE_HAS_PORT) {
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		dev->listen_port = ntohs(wg_iface->i_port);
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		dev->listen_port = wg_iface->i_port;
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		dev->flags |= WGDEVICE_HAS_LISTEN_PORT;
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	}
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	if (wg_iface->i_flags & WG_INTERFACE_HAS_PUBLIC) {
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		memcpy(dev->public_key, wg_iface->i_public, WG_KEY_SIZE);
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		memcpy(dev->public_key, wg_iface->i_public, sizeof(dev->public_key));
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		dev->flags |= WGDEVICE_HAS_PUBLIC_KEY;
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	}
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	if (wg_iface->i_flags & WG_INTERFACE_HAS_PRIVATE) {
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		memcpy(dev->private_key, wg_iface->i_private, WG_KEY_SIZE);
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		memcpy(dev->private_key, wg_iface->i_private, sizeof(dev->private_key));
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		dev->flags |= WGDEVICE_HAS_PRIVATE_KEY;
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	}
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	for (wg_peer = wg_iface->i_peers; wg_peer != NULL; wg_peer = wg_peer->p_next) {
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		if ((peer = calloc(1, sizeof(*peer))) == NULL)
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			return -errno;
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	for (wg_peer = wg_iface->i_peers; wg_peer; wg_peer = wg_peer->p_next) {
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		peer = calloc(1, sizeof(*peer));
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		if (!peer)
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			goto out;
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		if (dev->first_peer == NULL)
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			dev->first_peer = peer;
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@ -1038,12 +1029,12 @@ static int kernel_get_device(struct wgdevice **device, const char *iface)
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		dev->last_peer = peer;
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		if (wg_peer->p_flags & WG_PEER_HAS_PUBLIC) {
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			memcpy(peer->public_key, wg_peer->p_public, WG_KEY_SIZE);
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			memcpy(peer->public_key, wg_peer->p_public, sizeof(peer->public_key));
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			peer->flags |= WGPEER_HAS_PUBLIC_KEY;
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		}
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		if (wg_peer->p_flags & WG_PEER_HAS_PSK) {
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			memcpy(peer->preshared_key, wg_peer->p_psk, WG_KEY_SIZE);
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			memcpy(peer->preshared_key, wg_peer->p_psk, sizeof(peer->preshared_key));
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			peer->flags |= WGPEER_HAS_PRESHARED_KEY;
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		}
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@ -1052,9 +1043,8 @@ static int kernel_get_device(struct wgdevice **device, const char *iface)
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			peer->flags |= WGPEER_HAS_PERSISTENT_KEEPALIVE_INTERVAL;
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		}
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		if (wg_peer->p_flags & WG_PEER_HAS_SOCKADDR)
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			memcpy(&peer->endpoint.addr, &wg_peer->p_sa,
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			    wg_peer->p_sa.sa_len);
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		if (wg_peer->p_flags & WG_PEER_HAS_ENDPOINT && wg_peer->p_sa.sa_len <= sizeof(peer->endpoint.addr))
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			memcpy(&peer->endpoint.addr, &wg_peer->p_sa, wg_peer->p_sa.sa_len);
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		peer->rx_bytes = wg_peer->p_rxbytes;
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		peer->tx_bytes = wg_peer->p_txbytes;
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@ -1062,9 +1052,10 @@ static int kernel_get_device(struct wgdevice **device, const char *iface)
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		peer->last_handshake_time.tv_sec = wg_peer->p_last_handshake.tv_sec;
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		peer->last_handshake_time.tv_nsec = wg_peer->p_last_handshake.tv_nsec;
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		for (wg_aip = wg_peer->p_aips; wg_aip != NULL; wg_aip = wg_aip->a_next) {
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			if ((aip = calloc(1, sizeof(*aip))) == NULL)
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				return -errno;
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		for (wg_aip = wg_peer->p_aips; wg_aip; wg_aip = wg_aip->a_next) {
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			aip = calloc(1, sizeof(*aip));
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			if (!aip)
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				goto out;
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			if (peer->first_allowedip == NULL)
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				peer->first_allowedip = aip;
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@ -1075,43 +1066,44 @@ static int kernel_get_device(struct wgdevice **device, const char *iface)
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			aip->family = wg_aip->a_af;
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			if (wg_aip->a_af == AF_INET) {
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				memcpy(&aip->ip4, &wg_aip->a_ipv4, sizeof(aip->ip4));
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				aip->cidr = wg_aip->a_mask;
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				aip->cidr = wg_aip->a_cidr;
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			} else if (wg_aip->a_af == AF_INET6) {
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				memcpy(&aip->ip6, &wg_aip->a_ipv6, sizeof(aip->ip6));
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				aip->cidr = wg_aip->a_mask;
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				aip->cidr = wg_aip->a_cidr;
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			}
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		}
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	}
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	*device = dev;
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	errno = 0;
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out:
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	ret = -errno;
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	free(wgdata.wgd_mem);
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	return 0;
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	return ret;
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}
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static int kernel_set_device(struct wgdevice *dev)
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{
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	struct wg_data_io wgdata;
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	struct wg_interface_io wg_iface;
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	struct wg_peer_io *wg_peer;
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	struct wg_aip_io *wg_aip;
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	struct wg_data_io wgdata = { .wgd_size = 0 };
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	struct wg_interface_io wg_iface = { 0 };
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	struct wg_peer_io *wg_peer, *wg_peer_next;
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	struct wg_aip_io *wg_aip, *wg_aip_next;
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	struct wgpeer *peer;
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	struct wgallowedip *aip;
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	int s = get_dgram_socket(), ret;
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	getsock();
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	if (s < 0)
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		return -errno;
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	strlcpy(wgdata.wgd_name, dev->name, sizeof(wgdata.wgd_name));
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	wgdata.wgd_mem = &wg_iface;
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	bzero(&wg_iface, sizeof(wg_iface));
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	if (dev->flags & WGDEVICE_HAS_PRIVATE_KEY) {
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		memcpy(wg_iface.i_private, dev->private_key, WG_KEY_SIZE);
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		memcpy(wg_iface.i_private, dev->private_key, sizeof(wg_iface.i_private));
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		wg_iface.i_flags |= WG_INTERFACE_HAS_PRIVATE;
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	}
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	if (dev->flags & WGDEVICE_HAS_LISTEN_PORT) {
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		wg_iface.i_port = htons(dev->listen_port);
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		wg_iface.i_port = dev->listen_port;
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		wg_iface.i_flags |= WG_INTERFACE_HAS_PORT;
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	}
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@ -1124,14 +1116,15 @@ static int kernel_set_device(struct wgdevice *dev)
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		wg_iface.i_flags |= WG_INTERFACE_REPLACE_PEERS;
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	for_each_wgpeer(dev, peer) {
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		if ((wg_peer = calloc(1, sizeof(*wg_peer))) == NULL)
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			return -errno;
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		wg_peer = calloc(1, sizeof(*wg_peer));
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		if (!wg_peer)
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			goto out;
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		wg_peer->p_flags = WG_PEER_HAS_PUBLIC;
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		memcpy(wg_peer->p_public, peer->public_key, WG_KEY_SIZE);
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		memcpy(wg_peer->p_public, peer->public_key, sizeof(wg_peer->p_public));
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		if (peer->flags & WGPEER_HAS_PRESHARED_KEY) {
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			memcpy(wg_peer->p_psk, peer->preshared_key, WG_KEY_SIZE);
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			memcpy(wg_peer->p_psk, peer->preshared_key, sizeof(wg_peer->p_psk));
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			wg_peer->p_flags |= WG_PEER_HAS_PSK;
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		}
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@ -1140,10 +1133,10 @@ static int kernel_set_device(struct wgdevice *dev)
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			wg_peer->p_flags |= WG_PEER_HAS_PKA;
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		}
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		if (peer->endpoint.addr.sa_family == AF_INET ||
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		    peer->endpoint.addr.sa_family == AF_INET6) {
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			memcpy(&wg_peer->p_sa, &peer->endpoint.addr, peer->endpoint.addr.sa_len);
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			wg_peer->p_flags |= WG_PEER_HAS_SOCKADDR;
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		if ((peer->endpoint.addr.sa_family == AF_INET || peer->endpoint.addr.sa_family == AF_INET6) &&
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		    peer->endpoint.addr.sa_len <= sizeof(wg_peer->p_endpoint)) {
 | 
			
		||||
			memcpy(&wg_peer->p_endpoint, &peer->endpoint.addr, peer->endpoint.addr.sa_len);
 | 
			
		||||
			wg_peer->p_flags |= WG_PEER_HAS_ENDPOINT;
 | 
			
		||||
		}
 | 
			
		||||
 | 
			
		||||
		if (peer->flags & WGPEER_REPLACE_ALLOWEDIPS)
 | 
			
		||||
@ -1156,30 +1149,44 @@ static int kernel_set_device(struct wgdevice *dev)
 | 
			
		||||
		wg_iface.i_peers = wg_peer;
 | 
			
		||||
 | 
			
		||||
		for_each_wgallowedip(peer, aip) {
 | 
			
		||||
			if ((wg_aip = calloc(1, sizeof(*wg_aip))) == NULL)
 | 
			
		||||
				return -errno;
 | 
			
		||||
			wg_aip = calloc(1, sizeof(*wg_aip));
 | 
			
		||||
			if (!wg_aip)
 | 
			
		||||
				goto out;
 | 
			
		||||
 | 
			
		||||
			wg_aip->a_af = aip->family;
 | 
			
		||||
			wg_aip->a_mask = aip->cidr;
 | 
			
		||||
			wg_aip->a_cidr = aip->cidr;
 | 
			
		||||
 | 
			
		||||
			if (aip->family == AF_INET)
 | 
			
		||||
				memcpy(&wg_aip->a_ipv4, &aip->ip4, sizeof(aip->ip4));
 | 
			
		||||
			else if (aip->family == AF_INET6)
 | 
			
		||||
				memcpy(&wg_aip->a_ipv6, &aip->ip6, sizeof(aip->ip6));
 | 
			
		||||
			else
 | 
			
		||||
				return -1;
 | 
			
		||||
			if (aip->family == AF_INET) {
 | 
			
		||||
				memcpy(&wg_aip->a_ipv4, &aip->ip4, sizeof(wg_aip->a_ipv4));
 | 
			
		||||
			} else if (aip->family == AF_INET6) {
 | 
			
		||||
				memcpy(&wg_aip->a_ipv6, &aip->ip6, sizeof(wg_aip->a_ipv6));
 | 
			
		||||
			} else {
 | 
			
		||||
				free(wg_aip);
 | 
			
		||||
				continue;
 | 
			
		||||
			}
 | 
			
		||||
 | 
			
		||||
			wg_aip->a_next = wg_peer->p_aips;
 | 
			
		||||
			wg_peer->p_aips = wg_aip;
 | 
			
		||||
		}
 | 
			
		||||
	}
 | 
			
		||||
 | 
			
		||||
	if (ioctl(s, SIOCSWG, (caddr_t)&wgdata) == -1)
 | 
			
		||||
		return -errno;
 | 
			
		||||
	if (ioctl(s, SIOCSWG, (caddr_t)&wgdata) < 0)
 | 
			
		||||
		goto out;
 | 
			
		||||
	errno = 0;
 | 
			
		||||
 | 
			
		||||
	return 0;
 | 
			
		||||
out:
 | 
			
		||||
	ret = -errno;
 | 
			
		||||
	for (wg_peer = wg_iface.i_peers; wg_peer; wg_peer = wg_peer_next) {
 | 
			
		||||
		for (wg_aip = wg_peer->p_aips; wg_aip; wg_aip = wg_aip_next) {
 | 
			
		||||
			wg_aip_next = wg_aip->a_next;
 | 
			
		||||
			free(wg_aip);
 | 
			
		||||
		}
 | 
			
		||||
		wg_peer_next = wg_peer->p_next;
 | 
			
		||||
		free(wg_peer);
 | 
			
		||||
	}
 | 
			
		||||
	return ret;
 | 
			
		||||
}
 | 
			
		||||
#endif /* OpenBSD */
 | 
			
		||||
#endif
 | 
			
		||||
 | 
			
		||||
/* first\0second\0third\0forth\0last\0\0 */
 | 
			
		||||
char *ipc_list_devices(void)
 | 
			
		||||
 | 
			
		||||
							
								
								
									
										101
									
								
								src/uapi/openbsd/net/if_wg.h
									
									
									
									
									
										Normal file
									
								
							
							
						
						
									
										101
									
								
								src/uapi/openbsd/net/if_wg.h
									
									
									
									
									
										Normal file
									
								
							@ -0,0 +1,101 @@
 | 
			
		||||
/* SPDX-License-Identifier: ISC */
 | 
			
		||||
/*
 | 
			
		||||
 * Copyright (C) 2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 | 
			
		||||
 * Copyright (c) 2020 Matt Dunwoodie <ncon@noconroy.net>
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
#ifndef __IF_WG_H__
 | 
			
		||||
#define __IF_WG_H__
 | 
			
		||||
 | 
			
		||||
#include <sys/limits.h>
 | 
			
		||||
#include <sys/errno.h>
 | 
			
		||||
 | 
			
		||||
#include <net/if.h>
 | 
			
		||||
#include <netinet/in.h>
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
/*
 | 
			
		||||
 * This is the public interface to the WireGuard network interface.
 | 
			
		||||
 *
 | 
			
		||||
 * It is designed to be used by tools such as ifconfig(8) and wg(8).
 | 
			
		||||
 */
 | 
			
		||||
 | 
			
		||||
#define WG_KEY_LEN 32
 | 
			
		||||
 | 
			
		||||
#define SIOCSWG _IOWR('i', 210, struct wg_data_io)
 | 
			
		||||
#define SIOCGWG _IOWR('i', 211, struct wg_data_io)
 | 
			
		||||
 | 
			
		||||
struct wg_data_io {
 | 
			
		||||
	char	 wgd_name[IFNAMSIZ];
 | 
			
		||||
	size_t	 wgd_size;	/* size of the mem below */
 | 
			
		||||
	void	*wgd_mem;	/* wg_interface_io{1},(wg_peer_io,wg_aip_io*)* */
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
#define WG_INTERFACE_HAS_PUBLIC		(1 << 0)
 | 
			
		||||
#define WG_INTERFACE_HAS_PRIVATE	(1 << 1)
 | 
			
		||||
#define WG_INTERFACE_HAS_PORT		(1 << 2)
 | 
			
		||||
#define WG_INTERFACE_HAS_RTABLE		(1 << 3)
 | 
			
		||||
#define WG_INTERFACE_REPLACE_PEERS	(1 << 4)
 | 
			
		||||
 | 
			
		||||
struct wg_interface_io {
 | 
			
		||||
	uint8_t			 i_flags;
 | 
			
		||||
	struct wg_peer_io	*i_peers;
 | 
			
		||||
 | 
			
		||||
	in_port_t		 i_port;
 | 
			
		||||
	int			 i_rtable;
 | 
			
		||||
	uint8_t			 i_public[WG_KEY_LEN];
 | 
			
		||||
	uint8_t			 i_private[WG_KEY_LEN];
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
#define WG_PEER_HAS_PUBLIC		(1 << 0)
 | 
			
		||||
#define WG_PEER_HAS_PSK			(1 << 1)
 | 
			
		||||
#define WG_PEER_HAS_PKA			(1 << 2)
 | 
			
		||||
#define WG_PEER_HAS_ENDPOINT		(1 << 3)
 | 
			
		||||
#define WG_PEER_REPLACE_AIPS		(1 << 4)
 | 
			
		||||
#define WG_PEER_REMOVE			(1 << 5)
 | 
			
		||||
#define WG_PEER_UPDATE			(1 << 6)
 | 
			
		||||
 | 
			
		||||
#define p_sa		p_endpoint.sa_sa
 | 
			
		||||
#define p_sin		p_endpoint.sa_sin
 | 
			
		||||
#define p_sin6		p_endpoint.sa_sin6
 | 
			
		||||
 | 
			
		||||
struct wg_peer_io {
 | 
			
		||||
	int			 p_flags;
 | 
			
		||||
	struct wg_peer_io	*p_next;
 | 
			
		||||
	struct wg_aip_io	*p_aips;
 | 
			
		||||
 | 
			
		||||
	int			 p_protocol_version;
 | 
			
		||||
	uint8_t			 p_public[WG_KEY_LEN];
 | 
			
		||||
	uint8_t			 p_psk[WG_KEY_LEN];
 | 
			
		||||
	uint16_t		 p_pka;
 | 
			
		||||
	union wg_peer_endpoint {
 | 
			
		||||
		struct sockaddr		sa_sa;
 | 
			
		||||
		struct sockaddr_in	sa_sin;
 | 
			
		||||
		struct sockaddr_in6	sa_sin6;
 | 
			
		||||
	}			 p_endpoint;
 | 
			
		||||
 | 
			
		||||
	uint64_t		 p_txbytes;
 | 
			
		||||
	uint64_t		 p_rxbytes;
 | 
			
		||||
	struct timespec		 p_last_handshake; /* nanotime */
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
#define a_af	a_data.d_af
 | 
			
		||||
#define a_cidr	a_data.d_cidr
 | 
			
		||||
#define a_addr	a_data.d_addr
 | 
			
		||||
#define a_ipv4	a_addr.addr_ipv4
 | 
			
		||||
#define a_ipv6	a_addr.addr_ipv6
 | 
			
		||||
 | 
			
		||||
struct wg_aip_io {
 | 
			
		||||
	struct wg_aip_io	*a_next;
 | 
			
		||||
 | 
			
		||||
	struct wg_aip_data {
 | 
			
		||||
		sa_family_t		 d_af;
 | 
			
		||||
		int			 d_cidr;
 | 
			
		||||
		union wg_aip_addr {
 | 
			
		||||
			struct in_addr		addr_ipv4;
 | 
			
		||||
			struct in6_addr		addr_ipv6;
 | 
			
		||||
		}			 d_addr;
 | 
			
		||||
	}			 a_data;
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
#endif /* __IF_WG_H__ */
 | 
			
		||||
		Reference in New Issue
	
	Block a user