/* * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301 USA. * * Copyright 2018 Javier Arteaga */ #include "nm-default.h" #include "nm-device-wireguard.h" #include "nm-setting-wireguard.h" #include "nm-core-internal.h" #include "nm-utils/nm-secret-utils.h" #include "nm-device-private.h" #include "platform/nm-platform.h" #include "platform/nmp-object.h" #include "nm-device-factory.h" #include "nm-active-connection.h" #include "nm-act-request.h" #include "dns/nm-dns-manager.h" #include "nm-device-logging.h" _LOG_DECLARE_SELF(NMDeviceWireGuard); /*****************************************************************************/ /* TODO: ensure externally-managed works. Both after start of NM and * when adding a wg link with NM running. */ /* TODO: activate profile with peer preshared-key-flags=2. On first activation, the secret is * requested (good). Enter it and connect. Reactivate the profile, now there is no password * prompt, as the secret is cached (good??). */ /* TODO: unlike for other VPNs, we don't inject a direct route to the peers. That means, * you might get a routing sceneraio where the peer (VPN server) is reachable via the VPN. * How we handle adding routes to external gateway for other peers, has severe issues * as well. I think the only solution is https://www.wireguard.com/netns/#improving-the-classic-solutions */ /*****************************************************************************/ G_STATIC_ASSERT (NM_WIREGUARD_PUBLIC_KEY_LEN == NMP_WIREGUARD_PUBLIC_KEY_LEN); G_STATIC_ASSERT (NM_WIREGUARD_SYMMETRIC_KEY_LEN == NMP_WIREGUARD_SYMMETRIC_KEY_LEN); /*****************************************************************************/ #define LINK_CONFIG_RATE_LIMIT_NSEC (50 * NM_UTILS_NS_PER_MSEC) /* a special @next_try_at_nsec timestamp indicating that we should try again as soon as possible. */ #define NEXT_TRY_AT_NSEC_ASAP ((gint64) G_MAXINT64) /* a special @next_try_at_nsec timestamp that is * - positive (indicating resolve-checks are enabled) * - already in the past (we use the absolute timestamp of 1nsec for that). */ #define NEXT_TRY_AT_NSEC_PAST ((gint64) 1) /* like %NEXT_TRY_AT_NSEC_ASAP, but used for indicating to retry ASAP for a @retry_in_msec value. * That is a relative time duraction, contrary to @next_try_at_nsec which is an absolute * timestamp. */ #define RETRY_IN_MSEC_ASAP ((gint64) G_MAXINT64) #define RETRY_IN_MSEC_MAX ((gint64) (30 * 60 * 1000)) typedef enum { LINK_CONFIG_MODE_FULL, LINK_CONFIG_MODE_REAPPLY, LINK_CONFIG_MODE_ASSUME, LINK_CONFIG_MODE_ENDPOINTS, } LinkConfigMode; typedef struct { GCancellable *cancellable; NMSockAddrUnion sockaddr; /* the timestamp (in nm_utils_get_monotonic_timestamp_ns() scale) when we want * to retry resolving the endpoint (again). * * It may be set to %NEXT_TRY_AT_NSEC_ASAP to indicate to re-resolve as soon as possible. * * A @sockaddr is either fixed or it has * - @cancellable set to indicate an ongoing request * - @next_try_at_nsec set to a positive value, indicating when * we ought to retry. */ gint64 next_try_at_nsec; guint resolv_fail_count; } PeerEndpointResolveData; typedef struct { NMWireGuardPeer *peer; NMDeviceWireGuard *self; CList lst_peers; PeerEndpointResolveData ep_resolv; /* dirty flag used during _peers_update_all(). */ bool dirty_update_all:1; } PeerData; NM_GOBJECT_PROPERTIES_DEFINE (NMDeviceWireGuard, PROP_PUBLIC_KEY, PROP_LISTEN_PORT, PROP_FWMARK, ); typedef struct { NMDnsManager *dns_manager; NMPlatformLnkWireGuard lnk_curr; NMActRequestGetSecretsCallId *secrets_call_id; CList lst_peers_head; GHashTable *peers; gint64 resolve_next_try_at; guint resolve_next_try_id; gint64 link_config_last_at; guint link_config_delayed_id; } NMDeviceWireGuardPrivate; struct _NMDeviceWireGuard { NMDevice parent; NMDeviceWireGuardPrivate _priv; }; struct _NMDeviceWireGuardClass { NMDeviceClass parent; }; G_DEFINE_TYPE (NMDeviceWireGuard, nm_device_wireguard, NM_TYPE_DEVICE) #define NM_DEVICE_WIREGUARD_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMDeviceWireGuard, NM_IS_DEVICE_WIREGUARD, NMDevice) /*****************************************************************************/ static void _peers_resolve_start (NMDeviceWireGuard *self, PeerData *peer_data); static void _peers_resolve_retry_reschedule (NMDeviceWireGuard *self, gint64 new_next_try_at_nsec); static gboolean link_config_delayed_resolver_cb (gpointer user_data); static gboolean link_config_delayed_ratelimit_cb (gpointer user_data); /*****************************************************************************/ NM_UTILS_LOOKUP_STR_DEFINE_STATIC (_link_config_mode_to_string, LinkConfigMode, NM_UTILS_LOOKUP_DEFAULT_NM_ASSERT (NULL), NM_UTILS_LOOKUP_ITEM (LINK_CONFIG_MODE_FULL, "full"), NM_UTILS_LOOKUP_ITEM (LINK_CONFIG_MODE_REAPPLY, "reapply"), NM_UTILS_LOOKUP_ITEM (LINK_CONFIG_MODE_ASSUME, "assume"), NM_UTILS_LOOKUP_ITEM (LINK_CONFIG_MODE_ENDPOINTS, "endpoints"), ); /*****************************************************************************/ static gboolean _peer_data_equal (gconstpointer ptr_a, gconstpointer ptr_b) { const PeerData *peer_data_a = ptr_a; const PeerData *peer_data_b = ptr_b; return nm_streq (nm_wireguard_peer_get_public_key (peer_data_a->peer), nm_wireguard_peer_get_public_key (peer_data_b->peer)); } static guint _peer_data_hash (gconstpointer ptr) { const PeerData *peer_data = ptr; return nm_hash_str (nm_wireguard_peer_get_public_key (peer_data->peer)); } static PeerData * _peers_find (NMDeviceWireGuardPrivate *priv, NMWireGuardPeer *peer) { nm_assert (peer); G_STATIC_ASSERT_EXPR (G_STRUCT_OFFSET (PeerData, peer) == 0); return g_hash_table_lookup (priv->peers, &peer); } static void _peers_remove (NMDeviceWireGuardPrivate *priv, PeerData *peer_data) { nm_assert (peer_data); nm_assert (g_hash_table_lookup (priv->peers, peer_data) == peer_data); if (!g_hash_table_remove (priv->peers, peer_data)) nm_assert_not_reached (); c_list_unlink_stale (&peer_data->lst_peers); nm_wireguard_peer_unref (peer_data->peer); nm_clear_g_cancellable (&peer_data->ep_resolv.cancellable); g_slice_free (PeerData, peer_data); if (c_list_is_empty (&peer_data->lst_peers)) { nm_clear_g_source (&priv->resolve_next_try_id); nm_clear_g_source (&priv->link_config_delayed_id); } } static PeerData * _peers_add (NMDeviceWireGuard *self, NMWireGuardPeer *peer) { NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); PeerData *peer_data; nm_assert (peer); nm_assert (nm_wireguard_peer_is_sealed (peer)); nm_assert (!_peers_find (priv, peer)); peer_data = g_slice_new (PeerData); *peer_data = (PeerData) { .self = self, .peer = nm_wireguard_peer_ref (peer), .ep_resolv = { .sockaddr = NM_SOCK_ADDR_UNION_INIT_UNSPEC, }, }; c_list_link_tail (&priv->lst_peers_head, &peer_data->lst_peers); if (!nm_g_hash_table_add (priv->peers, peer_data)) nm_assert_not_reached (); return peer_data; } static gboolean _peers_resolve_retry_timeout (gpointer user_data) { NMDeviceWireGuard *self = user_data; NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); PeerData *peer_data; gint64 now; gint64 next; priv->resolve_next_try_id = 0; _LOGT (LOGD_DEVICE, "wireguard-peers: rechecking peer endpoints..."); now = nm_utils_get_monotonic_timestamp_ns (); next = G_MAXINT64; c_list_for_each_entry (peer_data, &priv->lst_peers_head, lst_peers) { if (peer_data->ep_resolv.next_try_at_nsec <= 0) continue; if (peer_data->ep_resolv.cancellable) { /* we are currently resolving a name. We don't need the global * watchdog to guard this peer. No need to adjust @next for * this one, when the currently ongoing resolving completes, we * may reschedule. Skip. */ continue; } if ( peer_data->ep_resolv.next_try_at_nsec == NEXT_TRY_AT_NSEC_ASAP || now >= peer_data->ep_resolv.next_try_at_nsec) { _peers_resolve_start (self, peer_data); /* same here. Now we are resolving. We don't need the global * watchdog. Skip w.r.t. finding @next. */ continue; } if (next > peer_data->ep_resolv.next_try_at_nsec) next = peer_data->ep_resolv.next_try_at_nsec; } if (next < G_MAXINT64) _peers_resolve_retry_reschedule (self, next); return G_SOURCE_REMOVE; } static void _peers_resolve_retry_reschedule (NMDeviceWireGuard *self, gint64 new_next_try_at_nsec) { NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); guint32 interval_ms; gint64 now; nm_assert (new_next_try_at_nsec > 0); nm_assert (new_next_try_at_nsec != NEXT_TRY_AT_NSEC_ASAP); if ( priv->resolve_next_try_id && priv->resolve_next_try_at <= new_next_try_at_nsec) { /* we already have an earlier timeout scheduled (possibly for * another peer that expires sooner). Don't reschedule now. * Even if the scheduled timeout expires too early, we will * compute the right next-timeout and reschedule then. */ return; } now = nm_utils_get_monotonic_timestamp_ns (); /* schedule at most one day ahead. No problem if we expire earlier * than expected. Also, rate-limit to 500 msec. */ interval_ms = NM_CLAMP ((new_next_try_at_nsec - now) / NM_UTILS_NS_PER_MSEC, (gint64) 500, (gint64) (24*60*60*1000)); _LOGT (LOGD_DEVICE, "wireguard-peers: schedule rechecking peer endpoints in %u msec", interval_ms); nm_clear_g_source (&priv->resolve_next_try_id); priv->resolve_next_try_at = new_next_try_at_nsec; priv->resolve_next_try_id = g_timeout_add (interval_ms, _peers_resolve_retry_timeout, self); } static void _peers_resolve_retry_reschedule_for_peer (NMDeviceWireGuard *self, PeerData *peer_data, gint64 retry_in_msec) { nm_assert (retry_in_msec >= 0); if (retry_in_msec == RETRY_IN_MSEC_ASAP) { _peers_resolve_start (self, peer_data); return; } peer_data->ep_resolv.next_try_at_nsec = nm_utils_get_monotonic_timestamp_ns () + (retry_in_msec * NM_UTILS_NS_PER_MSEC); _peers_resolve_retry_reschedule (self, peer_data->ep_resolv.next_try_at_nsec); } static gint64 _peers_retry_in_msec (PeerData *peer_data, gboolean after_failure) { if (peer_data->ep_resolv.next_try_at_nsec == NEXT_TRY_AT_NSEC_ASAP) { peer_data->ep_resolv.resolv_fail_count = 0; return RETRY_IN_MSEC_ASAP; } if (after_failure) { if (peer_data->ep_resolv.resolv_fail_count < G_MAXUINT) peer_data->ep_resolv.resolv_fail_count++; } else peer_data->ep_resolv.resolv_fail_count = 0; if (!after_failure) return RETRY_IN_MSEC_MAX; if (peer_data->ep_resolv.resolv_fail_count > 20) return RETRY_IN_MSEC_MAX; /* double the retry-time, starting with one second. */ return NM_MIN (RETRY_IN_MSEC_MAX, (1u << peer_data->ep_resolv.resolv_fail_count) * 500); } static void _peers_resolve_cb (GObject *source_object, GAsyncResult *res, gpointer user_data) { NMDeviceWireGuard *self; PeerData *peer_data; gs_free_error GError *resolv_error = NULL; GList *list; gboolean changed = FALSE; NMSockAddrUnion sockaddr; gint64 retry_in_msec; char s_sockaddr[100]; char s_retry[100]; list = g_resolver_lookup_by_name_finish (G_RESOLVER (source_object), res, &resolv_error); if (nm_utils_error_is_cancelled (resolv_error, FALSE)) return; peer_data = user_data; self = peer_data->self; g_clear_object (&peer_data->ep_resolv.cancellable); nm_assert ((!resolv_error) != (!list)); #define _retry_in_msec_to_string(retry_in_msec, s_retry) \ ({ \ gint64 _retry_in_msec = (retry_in_msec); \ \ _retry_in_msec == RETRY_IN_MSEC_ASAP \ ? "right away" \ : nm_sprintf_buf (s_retry, "in %"G_GINT64_FORMAT" msec", _retry_in_msec); \ }) if ( resolv_error && !g_error_matches (resolv_error, G_RESOLVER_ERROR, G_RESOLVER_ERROR_NOT_FOUND)) { retry_in_msec = _peers_retry_in_msec (peer_data, TRUE); _LOGT (LOGD_DEVICE, "wireguard-peer[%s]: failure to resolve endpoint \"%s\": %s (retry %s)", nm_wireguard_peer_get_public_key (peer_data->peer), nm_wireguard_peer_get_endpoint (peer_data->peer), resolv_error->message, _retry_in_msec_to_string (retry_in_msec, s_retry)); _peers_resolve_retry_reschedule_for_peer (self, peer_data, retry_in_msec); return; } sockaddr = (NMSockAddrUnion) NM_SOCK_ADDR_UNION_INIT_UNSPEC; if (!resolv_error) { GList *iter; for (iter = list; iter; iter = iter->next) { GInetAddress *a = iter->data; GSocketFamily f = g_inet_address_get_family (a); if (f == G_SOCKET_FAMILY_IPV4) { nm_assert (g_inet_address_get_native_size (a) == sizeof (struct in_addr)); sockaddr.in = (struct sockaddr_in) { .sin_family = AF_INET, .sin_port = htons (nm_sock_addr_endpoint_get_port (_nm_wireguard_peer_get_endpoint (peer_data->peer))), }; memcpy (&sockaddr.in.sin_addr, g_inet_address_to_bytes (a), sizeof (struct in_addr)); break; } if (f == G_SOCKET_FAMILY_IPV6) { nm_assert (g_inet_address_get_native_size (a) == sizeof (struct in6_addr)); sockaddr.in6 = (struct sockaddr_in6) { .sin6_family = AF_INET6, .sin6_port = htons (nm_sock_addr_endpoint_get_port (_nm_wireguard_peer_get_endpoint (peer_data->peer))), .sin6_scope_id = 0, .sin6_flowinfo = 0, }; memcpy (&sockaddr.in6.sin6_addr, g_inet_address_to_bytes (a), sizeof (struct in6_addr)); break; } } g_list_free_full (list, g_object_unref); } if (sockaddr.sa.sa_family == AF_UNSPEC) { /* we failed to resolve the name. There is no need to reset the previous * sockaddr. Either it was already AF_UNSPEC, or we had a good name * from resolving before. In that case, we don't want to throw away * a possibly good IP address, since WireGuard supports automatic roaming * anyway. Either the IP address is still good (and we would wrongly * reject it), or it isn't -- in which case it does not hurt much. */ } else { if (nm_sock_addr_union_cmp (&peer_data->ep_resolv.sockaddr, &sockaddr) != 0) changed = TRUE; peer_data->ep_resolv.sockaddr = sockaddr; } if ( resolv_error || peer_data->ep_resolv.sockaddr.sa.sa_family == AF_UNSPEC) { /* while it technically did not fail, something is probably odd. Retry frequently to * resolve the name, like we would do for normal failures. */ retry_in_msec = _peers_retry_in_msec (peer_data, TRUE); _LOGT (LOGD_DEVICE, "wireguard-peer[%s]: no %sresults for endpoint \"%s\" (retry %s)", nm_wireguard_peer_get_public_key (peer_data->peer), resolv_error ? "" : "suitable ", nm_wireguard_peer_get_endpoint (peer_data->peer), _retry_in_msec_to_string (retry_in_msec, s_retry)); } else { retry_in_msec = _peers_retry_in_msec (peer_data, FALSE); _LOGT (LOGD_DEVICE, "wireguard-peer[%s]: endpoint \"%s\" resolved to %s (retry %s)", nm_wireguard_peer_get_public_key (peer_data->peer), nm_wireguard_peer_get_endpoint (peer_data->peer), nm_sock_addr_union_to_string (&peer_data->ep_resolv.sockaddr, s_sockaddr, sizeof (s_sockaddr)), _retry_in_msec_to_string (retry_in_msec, s_retry)); } _peers_resolve_retry_reschedule_for_peer (self, peer_data, retry_in_msec); if (changed) { NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); /* schedule the job in the background, to give multiple resolve events time * to complete. */ nm_clear_g_source (&priv->link_config_delayed_id); priv->link_config_delayed_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE + 1, link_config_delayed_resolver_cb, self, NULL); } } static void _peers_resolve_start (NMDeviceWireGuard *self, PeerData *peer_data) { gs_unref_object GResolver *resolver = NULL; const char *host; resolver = g_resolver_get_default (); nm_assert (!peer_data->ep_resolv.cancellable); peer_data->ep_resolv.cancellable = g_cancellable_new (); /* set a special next-try timestamp. It is positive, and indicates * that we are in the process of trying. * This timestamp however already lies in the past, but that is correct, * because we are currently in the process of trying. We will determine * a next-try timestamp once the try completes. */ peer_data->ep_resolv.next_try_at_nsec = NEXT_TRY_AT_NSEC_PAST; host = nm_sock_addr_endpoint_get_host (_nm_wireguard_peer_get_endpoint (peer_data->peer)); g_resolver_lookup_by_name_async (resolver, host, peer_data->ep_resolv.cancellable, _peers_resolve_cb, peer_data); _LOGT (LOGD_DEVICE, "wireguard-peer[%s]: resolving name \"%s\" for endpoint \"%s\"...", nm_wireguard_peer_get_public_key (peer_data->peer), host, nm_wireguard_peer_get_endpoint (peer_data->peer)); } static void _peers_resolve_reresolve_all (NMDeviceWireGuard *self) { NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); PeerData *peer_data; c_list_for_each_entry (peer_data, &priv->lst_peers_head, lst_peers) { if (peer_data->ep_resolv.cancellable) { /* remember to retry when the currently ongoing request completes. */ peer_data->ep_resolv.next_try_at_nsec = NEXT_TRY_AT_NSEC_ASAP; } else if (peer_data->ep_resolv.next_try_at_nsec <= 0) { /* this peer does not require resolving the name. Skip it. */ } else { /* we have a next-try scheduled. Restart right away. */ peer_data->ep_resolv.resolv_fail_count = 0; _peers_resolve_start (self, peer_data); } } } static gboolean _peers_update (NMDeviceWireGuard *self, PeerData *peer_data, NMWireGuardPeer *peer, gboolean force_update) { nm_auto_unref_wgpeer NMWireGuardPeer *old_peer = NULL; NMSockAddrEndpoint *old_endpoint; NMSockAddrEndpoint *endpoint; gboolean endpoint_changed = FALSE; gboolean changed; NMSockAddrUnion sockaddr; gboolean sockaddr_fixed; char sockaddr_sbuf[100]; nm_assert (peer); nm_assert (nm_wireguard_peer_is_sealed (peer)); if ( peer == peer_data->peer && !force_update) return FALSE; changed = (nm_wireguard_peer_cmp (peer, peer_data->peer, NM_SETTING_COMPARE_FLAG_EXACT) != 0); old_peer = peer_data->peer; peer_data->peer = nm_wireguard_peer_ref (peer); old_endpoint = old_peer ? _nm_wireguard_peer_get_endpoint (old_peer) : NULL; endpoint = peer ? _nm_wireguard_peer_get_endpoint (peer) : NULL; endpoint_changed = ( endpoint != old_endpoint && ( !old_endpoint || !endpoint || !nm_streq (nm_sock_addr_endpoint_get_endpoint (old_endpoint), nm_sock_addr_endpoint_get_endpoint (endpoint)))); if ( !force_update && !endpoint_changed) { /* nothing to do. */ return changed; } sockaddr = (NMSockAddrUnion) NM_SOCK_ADDR_UNION_INIT_UNSPEC; sockaddr_fixed = TRUE; if ( endpoint && nm_sock_addr_endpoint_get_host (endpoint)) { if (!nm_sock_addr_endpoint_get_fixed_sockaddr (endpoint, &sockaddr)) { /* we have an endpoint, but it's not a static IP address. We need to resolve * the names. */ sockaddr_fixed = FALSE; } } if (nm_sock_addr_union_cmp (&peer_data->ep_resolv.sockaddr, &sockaddr) != 0) changed = TRUE; nm_clear_g_cancellable (&peer_data->ep_resolv.cancellable); peer_data->ep_resolv = (PeerEndpointResolveData) { .sockaddr = sockaddr, .resolv_fail_count = 0, .cancellable = NULL, .next_try_at_nsec = 0, }; if (!endpoint) { _LOGT (LOGD_DEVICE, "wireguard-peer[%s]: no endpoint configured", nm_wireguard_peer_get_public_key (peer_data->peer)); } else if (!nm_sock_addr_endpoint_get_host (endpoint)) { _LOGT (LOGD_DEVICE, "wireguard-peer[%s]: invalid endpoint \"%s\"", nm_wireguard_peer_get_public_key (peer_data->peer), nm_sock_addr_endpoint_get_endpoint (endpoint)); } else if (sockaddr_fixed) { _LOGT (LOGD_DEVICE, "wireguard-peer[%s]: fixed endpoint \"%s\" (%s)", nm_wireguard_peer_get_public_key (peer_data->peer), nm_sock_addr_endpoint_get_endpoint (endpoint), nm_sock_addr_union_to_string (&peer_data->ep_resolv.sockaddr, sockaddr_sbuf, sizeof (sockaddr_sbuf))); } else _peers_resolve_start (self, peer_data); return changed; } static void _peers_remove_all (NMDeviceWireGuardPrivate *priv) { PeerData *peer_data; while ((peer_data = c_list_first_entry (&priv->lst_peers_head, PeerData, lst_peers))) _peers_remove (priv, peer_data); } static void _peers_update_all (NMDeviceWireGuard *self, NMSettingWireGuard *s_wg, gboolean *out_peers_removed) { NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); PeerData *peer_data_safe; PeerData *peer_data; guint i, n; gboolean peers_removed = FALSE; c_list_for_each_entry (peer_data, &priv->lst_peers_head, lst_peers) peer_data->dirty_update_all = TRUE; n = nm_setting_wireguard_get_peers_len (s_wg); for (i = 0; i < n; i++) { NMWireGuardPeer *peer = nm_setting_wireguard_get_peer (s_wg, i); gboolean added = FALSE; peer_data = _peers_find (priv, peer); if (!peer_data) { peer_data = _peers_add (self, peer); added = TRUE; } _peers_update (self, peer_data, peer, added); peer_data->dirty_update_all = FALSE; } c_list_for_each_entry_safe (peer_data, peer_data_safe, &priv->lst_peers_head, lst_peers) { if (peer_data->dirty_update_all) { _peers_remove (priv, peer_data); peers_removed = TRUE; } } NM_SET_OUT (out_peers_removed, peers_removed); } static void _peers_get_platform_list (NMDeviceWireGuardPrivate *priv, LinkConfigMode config_mode, NMPWireGuardPeer **out_peers, NMPlatformWireGuardChangePeerFlags **out_peer_flags, guint *out_len, GArray **out_allowed_ips_data) { gs_free NMPWireGuardPeer *plpeers = NULL; gs_free NMPlatformWireGuardChangePeerFlags *plpeer_flags = NULL; gs_unref_array GArray *allowed_ips = NULL; PeerData *peer_data; guint i_good; guint n_aip; guint i_aip; guint len; guint i; nm_assert (out_peers && !*out_peers); nm_assert (out_peer_flags && !*out_peer_flags); nm_assert (out_len && *out_len == 0); nm_assert (out_allowed_ips_data && !*out_allowed_ips_data); len = g_hash_table_size (priv->peers); nm_assert (len == c_list_length (&priv->lst_peers_head)); if (len == 0) return; plpeers = g_new0 (NMPWireGuardPeer, len); plpeer_flags = g_new0 (NMPlatformWireGuardChangePeerFlags, len); i_good = 0; c_list_for_each_entry (peer_data, &priv->lst_peers_head, lst_peers) { NMPlatformWireGuardChangePeerFlags *plf = &plpeer_flags[i_good]; NMPWireGuardPeer *plp = &plpeers[i_good]; NMSettingSecretFlags psk_secret_flags; if (!_nm_utils_wireguard_decode_key (nm_wireguard_peer_get_public_key (peer_data->peer), sizeof (plp->public_key), plp->public_key)) continue; *plf = NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_NONE; plp->persistent_keepalive_interval = nm_wireguard_peer_get_persistent_keepalive (peer_data->peer); if (NM_IN_SET (config_mode, LINK_CONFIG_MODE_FULL, LINK_CONFIG_MODE_REAPPLY)) *plf |= NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_HAS_KEEPALIVE_INTERVAL; /* if the peer has an endpoint but it is not yet resolved (not ready), * we still configure it and leave the endpoint unspecified. Later, * when we can resolve the endpoint, we will update. */ plp->endpoint = peer_data->ep_resolv.sockaddr; if (plp->endpoint.sa.sa_family == AF_UNSPEC) { /* we don't actually ever clear endpoints, if we don't have better information. */ } else *plf |= NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_HAS_ENDPOINT; if (NM_IN_SET (config_mode, LINK_CONFIG_MODE_FULL, LINK_CONFIG_MODE_REAPPLY)) { psk_secret_flags = nm_wireguard_peer_get_preshared_key_flags (peer_data->peer); if (!NM_FLAGS_HAS (psk_secret_flags, NM_SETTING_SECRET_FLAG_NOT_REQUIRED)) { if ( !_nm_utils_wireguard_decode_key (nm_wireguard_peer_get_preshared_key (peer_data->peer), sizeof (plp->preshared_key), plp->preshared_key) && config_mode == LINK_CONFIG_MODE_FULL) goto skip; } *plf |= NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_HAS_PRESHARED_KEY; } if ( NM_IN_SET (config_mode, LINK_CONFIG_MODE_FULL, LINK_CONFIG_MODE_REAPPLY) && ((n_aip = nm_wireguard_peer_get_allowed_ips_len (peer_data->peer)) > 0)) { if (!allowed_ips) allowed_ips = g_array_new (FALSE, FALSE, sizeof (NMPWireGuardAllowedIP)); *plf |= NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_HAS_ALLOWEDIPS | NM_PLATFORM_WIREGUARD_CHANGE_PEER_FLAG_REPLACE_ALLOWEDIPS; plp->_construct_idx_start = allowed_ips->len; for (i_aip = 0; i_aip < n_aip; i_aip++) { const char *aip; NMIPAddr addrbin = { }; int addr_family; gboolean valid; int prefix; aip = nm_wireguard_peer_get_allowed_ip (peer_data->peer, i_aip, &valid); if ( !valid || !nm_utils_parse_inaddr_prefix_bin (AF_UNSPEC, aip, &addr_family, &addrbin, &prefix)) { /* the address is really not expected to be invalid, because then * the connection would not verify. Anyway, silently skip it. */ continue; } if (prefix == -1) prefix = addr_family == AF_INET ? 32 : 128; g_array_append_val (allowed_ips, ((NMPWireGuardAllowedIP) { .family = addr_family, .mask = prefix, .addr = addrbin, })); } plp->_construct_idx_end = allowed_ips->len; } i_good++; continue; skip: memset (plp, 0, sizeof (*plp)); } if (i_good == 0) return; for (i = 0; i < i_good; i++) { NMPWireGuardPeer *plp = &plpeers[i]; guint l; if (plp->_construct_idx_end == 0) { nm_assert (plp->_construct_idx_start == 0); plp->allowed_ips = NULL; plp->allowed_ips_len = 0; } else { nm_assert (plp->_construct_idx_start < plp->_construct_idx_end); l = plp->_construct_idx_end - plp->_construct_idx_start; plp->allowed_ips = &g_array_index (allowed_ips, NMPWireGuardAllowedIP, plp->_construct_idx_start); plp->allowed_ips_len = l; } } *out_peers = g_steal_pointer (&plpeers); *out_peer_flags = g_steal_pointer (&plpeer_flags);; *out_len = i_good; *out_allowed_ips_data = g_steal_pointer (&allowed_ips); } /*****************************************************************************/ static void update_properties (NMDevice *device) { NMDeviceWireGuard *self; NMDeviceWireGuardPrivate *priv; const NMPlatformLink *plink; const NMPlatformLnkWireGuard *props = NULL; int ifindex; g_return_if_fail (NM_IS_DEVICE_WIREGUARD (device)); self = NM_DEVICE_WIREGUARD (device); priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); ifindex = nm_device_get_ifindex (device); props = nm_platform_link_get_lnk_wireguard (nm_device_get_platform (device), ifindex, &plink); if (!props) { _LOGW (LOGD_PLATFORM, "could not get wireguard properties"); return; } g_object_freeze_notify (G_OBJECT (device)); #define CHECK_PROPERTY_CHANGED(field, prop) \ G_STMT_START { \ if (priv->lnk_curr.field != props->field) { \ priv->lnk_curr.field = props->field; \ _notify (self, prop); \ } \ } G_STMT_END #define CHECK_PROPERTY_CHANGED_ARRAY(field, prop) \ G_STMT_START { \ if (memcmp (&priv->lnk_curr.field, &props->field, sizeof (priv->lnk_curr.field)) != 0) { \ memcpy (&priv->lnk_curr.field, &props->field, sizeof (priv->lnk_curr.field)); \ _notify (self, prop); \ } \ } G_STMT_END CHECK_PROPERTY_CHANGED_ARRAY (public_key, PROP_PUBLIC_KEY); CHECK_PROPERTY_CHANGED (listen_port, PROP_LISTEN_PORT); CHECK_PROPERTY_CHANGED (fwmark, PROP_FWMARK); g_object_thaw_notify (G_OBJECT (device)); } static void link_changed (NMDevice *device, const NMPlatformLink *pllink) { NM_DEVICE_CLASS (nm_device_wireguard_parent_class)->link_changed (device, pllink); update_properties (device); } static NMDeviceCapabilities get_generic_capabilities (NMDevice *dev) { return NM_DEVICE_CAP_IS_SOFTWARE; } /*****************************************************************************/ static gboolean create_and_realize (NMDevice *device, NMConnection *connection, NMDevice *parent, const NMPlatformLink **out_plink, GError **error) { const char *iface = nm_device_get_iface (device); int r; g_return_val_if_fail (iface, FALSE); r = nm_platform_link_wireguard_add (nm_device_get_platform (device), iface, out_plink); if (r < 0) { g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_CREATION_FAILED, "Failed to create WireGuard interface '%s' for '%s': %s", iface, nm_connection_get_id (connection), nm_strerror (r)); return FALSE; } return TRUE; } /*****************************************************************************/ static void _secrets_cancel (NMDeviceWireGuard *self) { NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); if (priv->secrets_call_id) nm_act_request_cancel_secrets (NULL, priv->secrets_call_id); nm_assert (!priv->secrets_call_id); } static void _secrets_cb (NMActRequest *req, NMActRequestGetSecretsCallId *call_id, NMSettingsConnection *connection, GError *error, gpointer user_data) { NMDeviceWireGuard *self = NM_DEVICE_WIREGUARD (user_data); NMDevice *device = NM_DEVICE (self); NMDeviceWireGuardPrivate *priv; g_return_if_fail (NM_IS_DEVICE_WIREGUARD (self)); g_return_if_fail (NM_IS_ACT_REQUEST (req)); priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); g_return_if_fail (priv->secrets_call_id == call_id); priv->secrets_call_id = NULL; if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) return; g_return_if_fail (req == nm_device_get_act_request (device)); g_return_if_fail (nm_device_get_state (device) == NM_DEVICE_STATE_NEED_AUTH); g_return_if_fail (nm_act_request_get_settings_connection (req) == connection); if (error) { _LOGW (LOGD_ETHER, "%s", error->message); nm_device_state_changed (device, NM_DEVICE_STATE_FAILED, NM_DEVICE_STATE_REASON_NO_SECRETS); } else nm_device_activate_schedule_stage1_device_prepare (device); } static void _secrets_get_secrets (NMDeviceWireGuard *self, const char *setting_name, NMSecretAgentGetSecretsFlags flags, const char *const*hints) { NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); NMActRequest *req; _secrets_cancel (self); req = nm_device_get_act_request (NM_DEVICE (self)); g_return_if_fail (NM_IS_ACT_REQUEST (req)); priv->secrets_call_id = nm_act_request_get_secrets (req, TRUE, setting_name, flags, hints, _secrets_cb, self); g_return_if_fail (priv->secrets_call_id); } static NMActStageReturn _secrets_handle_auth_or_fail (NMDeviceWireGuard *self, NMActRequest *req, gboolean new_secrets) { NMConnection *applied_connection; const char *setting_name; gs_unref_ptrarray GPtrArray *hints = NULL; if (!nm_device_auth_retries_try_next (NM_DEVICE (self))) return NM_ACT_STAGE_RETURN_FAILURE; nm_device_state_changed (NM_DEVICE (self), NM_DEVICE_STATE_NEED_AUTH, NM_DEVICE_STATE_REASON_NONE); nm_active_connection_clear_secrets (NM_ACTIVE_CONNECTION (req)); applied_connection = nm_act_request_get_applied_connection (req); setting_name = nm_connection_need_secrets (applied_connection, &hints); if (!setting_name) { _LOGI (LOGD_DEVICE, "Cleared secrets, but setting didn't need any secrets."); return NM_ACT_STAGE_RETURN_FAILURE; } if (hints) g_ptr_array_add (hints, NULL); _secrets_get_secrets (self, setting_name, NM_SECRET_AGENT_GET_SECRETS_FLAG_ALLOW_INTERACTION | (new_secrets ? NM_SECRET_AGENT_GET_SECRETS_FLAG_REQUEST_NEW : 0), ( hints ? (const char *const*) hints->pdata : NULL)); return NM_ACT_STAGE_RETURN_POSTPONE; } /*****************************************************************************/ static void _dns_config_changed (NMDnsManager *dns_manager, NMDeviceWireGuard *self) { /* when the DNS configuration changes, we re-resolve the peer addresses. * * Possibly, we should also do that when the default-route changes, but it's * hard to figure out when that happens. */ _peers_resolve_reresolve_all (self); } /*****************************************************************************/ static NMActStageReturn link_config (NMDeviceWireGuard *self, const char *reason, LinkConfigMode config_mode, NMDeviceStateReason *out_failure_reason) { NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); nm_auto_bzero_secret_ptr NMSecretPtr wg_lnk_clear_private_key = NM_SECRET_PTR_INIT (); NMSettingWireGuard *s_wg; NMConnection *connection; NMActStageReturn ret; gs_unref_array GArray *allowed_ips_data = NULL; NMPlatformLnkWireGuard wg_lnk; gs_free NMPWireGuardPeer *plpeers = NULL; gs_free NMPlatformWireGuardChangePeerFlags *plpeer_flags = NULL; guint plpeers_len = 0; const char *setting_name; gboolean peers_removed; NMPlatformWireGuardChangeFlags wg_change_flags; int ifindex; int r; NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_NONE); connection = nm_device_get_applied_connection (NM_DEVICE (self)); s_wg = NM_SETTING_WIREGUARD (nm_connection_get_setting (connection, NM_TYPE_SETTING_WIREGUARD)); g_return_val_if_fail (s_wg, NM_ACT_STAGE_RETURN_FAILURE); priv->link_config_last_at = nm_utils_get_monotonic_timestamp_ns (); _LOGT (LOGD_DEVICE, "wireguard link config (%s, %s)...", reason, _link_config_mode_to_string (config_mode)); if (!priv->dns_manager) { priv->dns_manager = g_object_ref (nm_dns_manager_get ()); g_signal_connect (priv->dns_manager, NM_DNS_MANAGER_CONFIG_CHANGED, G_CALLBACK (_dns_config_changed), self); } if ( NM_IN_SET (config_mode, LINK_CONFIG_MODE_FULL) && (setting_name = nm_connection_need_secrets (connection, NULL))) { NMActRequest *req = nm_device_get_act_request (NM_DEVICE (self)); _LOGD (LOGD_DEVICE, "Activation: connection '%s' has security, but secrets are required.", nm_connection_get_id (connection)); ret = _secrets_handle_auth_or_fail (self, req, FALSE); if (ret != NM_ACT_STAGE_RETURN_SUCCESS) { if (ret != NM_ACT_STAGE_RETURN_POSTPONE) { nm_assert (ret == NM_ACT_STAGE_RETURN_FAILURE); NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_NO_SECRETS); } return ret; } } ifindex = nm_device_get_ip_ifindex (NM_DEVICE (self)); if (ifindex <= 0) { NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_CONFIG_FAILED); return NM_ACT_STAGE_RETURN_FAILURE; } _peers_update_all (self, s_wg, &peers_removed); wg_lnk = (NMPlatformLnkWireGuard) { }; wg_change_flags = NM_PLATFORM_WIREGUARD_CHANGE_FLAG_NONE; if ( NM_IN_SET (config_mode, LINK_CONFIG_MODE_FULL) || ( NM_IN_SET (config_mode, LINK_CONFIG_MODE_REAPPLY) && peers_removed)) wg_change_flags |= NM_PLATFORM_WIREGUARD_CHANGE_FLAG_REPLACE_PEERS; if (NM_IN_SET (config_mode, LINK_CONFIG_MODE_FULL, LINK_CONFIG_MODE_REAPPLY)) { wg_lnk.listen_port = nm_setting_wireguard_get_listen_port (s_wg), wg_change_flags |= NM_PLATFORM_WIREGUARD_CHANGE_FLAG_HAS_LISTEN_PORT; wg_lnk.fwmark = nm_setting_wireguard_get_fwmark (s_wg), wg_change_flags |= NM_PLATFORM_WIREGUARD_CHANGE_FLAG_HAS_FWMARK; if (_nm_utils_wireguard_decode_key (nm_setting_wireguard_get_private_key (s_wg), sizeof (wg_lnk.private_key), wg_lnk.private_key)) { wg_lnk_clear_private_key = NM_SECRET_PTR_ARRAY (wg_lnk.private_key); wg_change_flags |= NM_PLATFORM_WIREGUARD_CHANGE_FLAG_HAS_PRIVATE_KEY; } else { if (NM_IN_SET (config_mode, LINK_CONFIG_MODE_FULL)) { _LOGD (LOGD_DEVICE, "the provided private-key is invalid"); NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_NO_SECRETS); return NM_ACT_STAGE_RETURN_FAILURE; } } } _peers_get_platform_list (priv, config_mode, &plpeers, &plpeer_flags, &plpeers_len, &allowed_ips_data); r = nm_platform_link_wireguard_change (nm_device_get_platform (NM_DEVICE (self)), ifindex, &wg_lnk, plpeers, plpeer_flags, plpeers_len, wg_change_flags); nm_explicit_bzero (plpeers, sizeof (plpeers) * plpeers_len); if (r < 0) { NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_CONFIG_FAILED); return NM_ACT_STAGE_RETURN_FAILURE; } return NM_ACT_STAGE_RETURN_SUCCESS; } static void link_config_delayed (NMDeviceWireGuard *self, const char *reason) { NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); gint64 now; priv->link_config_delayed_id = 0; if (priv->link_config_last_at != 0) { now = nm_utils_get_monotonic_timestamp_ns (); if (now < priv->link_config_last_at + LINK_CONFIG_RATE_LIMIT_NSEC) { /* we ratelimit calls to link_config(), because we call this whenver a resolver * completes. */ _LOGT (LOGD_DEVICE, "wireguard link config (%s) (postponed)", reason); priv->link_config_delayed_id = g_timeout_add (NM_MAX ((priv->link_config_last_at + LINK_CONFIG_RATE_LIMIT_NSEC - now) / NM_UTILS_NS_PER_MSEC, (gint64) 1), link_config_delayed_ratelimit_cb, self); return; } } link_config (self, reason, LINK_CONFIG_MODE_ENDPOINTS, NULL); } static gboolean link_config_delayed_ratelimit_cb (gpointer user_data) { link_config_delayed (user_data, "after-ratelimiting"); return G_SOURCE_REMOVE; } static gboolean link_config_delayed_resolver_cb (gpointer user_data) { link_config_delayed (user_data, "resolver-update"); return G_SOURCE_REMOVE; } static NMActStageReturn act_stage2_config (NMDevice *device, NMDeviceStateReason *out_failure_reason) { NMDeviceSysIfaceState sys_iface_state; NMDeviceStateReason failure_reason; NMActStageReturn ret; sys_iface_state = nm_device_sys_iface_state_get (device); if (sys_iface_state == NM_DEVICE_SYS_IFACE_STATE_EXTERNAL) { NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_NONE); return NM_ACT_STAGE_RETURN_SUCCESS; } ret = link_config (NM_DEVICE_WIREGUARD (device), "configure", (sys_iface_state == NM_DEVICE_SYS_IFACE_STATE_ASSUME) ? LINK_CONFIG_MODE_ASSUME : LINK_CONFIG_MODE_FULL, &failure_reason); if (sys_iface_state == NM_DEVICE_SYS_IFACE_STATE_ASSUME) { /* this never fails. */ NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_NONE); return NM_ACT_STAGE_RETURN_SUCCESS; } if (ret != NM_ACT_STAGE_RETURN_FAILURE) { NM_SET_OUT (out_failure_reason, NM_DEVICE_STATE_REASON_NONE); return ret; } nm_device_state_changed (device, NM_DEVICE_STATE_FAILED, failure_reason); NM_SET_OUT (out_failure_reason, failure_reason); return NM_ACT_STAGE_RETURN_FAILURE; } static guint32 get_configured_mtu (NMDevice *device, NMDeviceMtuSource *out_source) { /* When "MTU" for `wg-quick up` is unset, it calls `ip route get` for * each configured endpoint, to determine the suitable MTU how to reach * each endpoint. * For `wg-quick` this works very well, because whenever the script runs it * determines the best setting at that point in time. It's simply not concerned * with what happens later (and it's not around anyway). * * NetworkManager sticks around, so the right MTU would need to be re-determined * whenever anything relevant changes. Which basically means, to re-evaluate whenever * something related to addresses or routing changes (which happens all the time). * * The correct MTU indeed depends on the MTU setting of other interfaces (or routes). * But it's still odd, that activating/deactivating a seemingly unrelated interface * would trigger an MTU change. It's odd to explain/document and odd to implemented * -- despite this being the reality. * * For now, only support configuring an explicit MTU, or leave the setting untouched. * The same limitiation also applies to other "ip-tunnel" types, where we could use * similar smarts for autodetecting the MTU. */ return nm_device_get_configured_mtu_from_connection (device, NM_TYPE_SETTING_WIREGUARD, out_source); } static void device_state_changed (NMDevice *device, NMDeviceState new_state, NMDeviceState old_state, NMDeviceStateReason reason) { NMDeviceWireGuardPrivate *priv; if (new_state <= NM_DEVICE_STATE_ACTIVATED) return; priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (device); _peers_remove_all (priv); _secrets_cancel (NM_DEVICE_WIREGUARD (device)); } /*****************************************************************************/ static gboolean can_reapply_change (NMDevice *device, const char *setting_name, NMSetting *s_old, NMSetting *s_new, GHashTable *diffs, GError **error) { if (nm_streq (setting_name, NM_SETTING_WIREGUARD_SETTING_NAME)) { /* Most, but not all WireGuard settings can be reapplied. Whitelist. * * MTU cannot be reapplied. */ return nm_device_hash_check_invalid_keys (diffs, NM_SETTING_WIREGUARD_SETTING_NAME, error, NM_SETTING_WIREGUARD_FWMARK, NM_SETTING_WIREGUARD_LISTEN_PORT, NM_SETTING_WIREGUARD_PEERS, NM_SETTING_WIREGUARD_PRIVATE_KEY, NM_SETTING_WIREGUARD_PRIVATE_KEY_FLAGS); } return NM_DEVICE_CLASS (nm_device_wireguard_parent_class)->can_reapply_change (device, setting_name, s_old, s_new, diffs, error); } static void reapply_connection (NMDevice *device, NMConnection *con_old, NMConnection *con_new) { NM_DEVICE_CLASS (nm_device_wireguard_parent_class)->reapply_connection (device, con_old, con_new); link_config (NM_DEVICE_WIREGUARD (device), "reapply", LINK_CONFIG_MODE_REAPPLY, NULL); } /*****************************************************************************/ static void update_connection (NMDevice *device, NMConnection *connection) { NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (device); NMSettingWireGuard *s_wg = NM_SETTING_WIREGUARD (nm_connection_get_setting (connection, NM_TYPE_SETTING_WIREGUARD)); const NMPObject *obj_wg; const NMPObjectLnkWireGuard *olnk_wg; guint i; if (!s_wg) { s_wg = NM_SETTING_WIREGUARD (nm_setting_wireguard_new ()); nm_connection_add_setting (connection, NM_SETTING (s_wg)); } g_object_set (s_wg, NM_SETTING_WIREGUARD_FWMARK, (guint) priv->lnk_curr.fwmark, NM_SETTING_WIREGUARD_LISTEN_PORT, (guint) priv->lnk_curr.listen_port, NULL); obj_wg = NMP_OBJECT_UP_CAST (nm_platform_link_get_lnk_wireguard (nm_device_get_platform (device), nm_device_get_ip_ifindex (device), NULL)); if (!obj_wg) return; olnk_wg = &obj_wg->_lnk_wireguard; for (i = 0; i < olnk_wg->peers_len; i++) { nm_auto_unref_wgpeer NMWireGuardPeer *peer = NULL; const NMPWireGuardPeer *ppeer = &olnk_wg->peers[i]; peer = nm_wireguard_peer_new (); _nm_wireguard_peer_set_public_key_bin (peer, ppeer->public_key); nm_setting_wireguard_append_peer (s_wg, peer); } } /*****************************************************************************/ static void get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { NMDeviceWireGuard *self = NM_DEVICE_WIREGUARD (object); NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); switch (prop_id) { case PROP_PUBLIC_KEY: g_value_take_variant (value, g_variant_new_fixed_array (G_VARIANT_TYPE_BYTE, priv->lnk_curr.public_key, sizeof (priv->lnk_curr.public_key), 1)); break; case PROP_LISTEN_PORT: g_value_set_uint (value, priv->lnk_curr.listen_port); break; case PROP_FWMARK: g_value_set_uint (value, priv->lnk_curr.fwmark); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /*****************************************************************************/ static void nm_device_wireguard_init (NMDeviceWireGuard *self) { NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); c_list_init (&priv->lst_peers_head); priv->peers = g_hash_table_new (_peer_data_hash, _peer_data_equal); } static void dispose (GObject *object) { NMDeviceWireGuard *self = NM_DEVICE_WIREGUARD (object); NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); _secrets_cancel (self); _peers_remove_all (priv); G_OBJECT_CLASS (nm_device_wireguard_parent_class)->dispose (object); } static void finalize (GObject *object) { NMDeviceWireGuard *self = NM_DEVICE_WIREGUARD (object); NMDeviceWireGuardPrivate *priv = NM_DEVICE_WIREGUARD_GET_PRIVATE (self); nm_explicit_bzero (priv->lnk_curr.private_key, sizeof (priv->lnk_curr.private_key)); if (priv->dns_manager) { g_signal_handlers_disconnect_by_func (priv->dns_manager, _dns_config_changed, self); g_object_unref (priv->dns_manager); } G_OBJECT_CLASS (nm_device_wireguard_parent_class)->finalize (object); } static const NMDBusInterfaceInfoExtended interface_info_device_wireguard = { .parent = NM_DEFINE_GDBUS_INTERFACE_INFO_INIT ( NM_DBUS_INTERFACE_DEVICE_WIREGUARD, .properties = NM_DEFINE_GDBUS_PROPERTY_INFOS ( NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE ("PublicKey", "ay", NM_DEVICE_WIREGUARD_PUBLIC_KEY), NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE ("ListenPort", "q", NM_DEVICE_WIREGUARD_LISTEN_PORT), NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE ("FwMark", "u", NM_DEVICE_WIREGUARD_FWMARK), ), ), }; static void nm_device_wireguard_class_init (NMDeviceWireGuardClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); NMDBusObjectClass *dbus_object_class = NM_DBUS_OBJECT_CLASS (klass); NMDeviceClass *device_class = NM_DEVICE_CLASS (klass); object_class->get_property = get_property; object_class->dispose = dispose; object_class->finalize = finalize; dbus_object_class->interface_infos = NM_DBUS_INTERFACE_INFOS (&interface_info_device_wireguard); device_class->connection_type_supported = NM_SETTING_WIREGUARD_SETTING_NAME; device_class->connection_type_check_compatible = NM_SETTING_WIREGUARD_SETTING_NAME; device_class->link_types = NM_DEVICE_DEFINE_LINK_TYPES (NM_LINK_TYPE_WIREGUARD); device_class->state_changed = device_state_changed; device_class->create_and_realize = create_and_realize; device_class->act_stage2_config = act_stage2_config; device_class->act_stage2_config_also_for_external_or_assume = TRUE; device_class->get_generic_capabilities = get_generic_capabilities; device_class->link_changed = link_changed; device_class->update_connection = update_connection; device_class->can_reapply_change = can_reapply_change; device_class->reapply_connection = reapply_connection; device_class->get_configured_mtu = get_configured_mtu; obj_properties[PROP_PUBLIC_KEY] = g_param_spec_variant (NM_DEVICE_WIREGUARD_PUBLIC_KEY, "", "", G_VARIANT_TYPE ("ay"), NULL, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); obj_properties[PROP_LISTEN_PORT] = g_param_spec_uint (NM_DEVICE_WIREGUARD_LISTEN_PORT, "", "", 0, G_MAXUINT16, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); obj_properties[PROP_FWMARK] = g_param_spec_uint (NM_DEVICE_WIREGUARD_FWMARK, "", "", 0, G_MAXUINT32, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); g_object_class_install_properties (object_class, _PROPERTY_ENUMS_LAST, obj_properties); } /*************************************************************/ #define NM_TYPE_WIREGUARD_DEVICE_FACTORY (nm_wireguard_device_factory_get_type ()) #define NM_WIREGUARD_DEVICE_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_WIREGUARD_DEVICE_FACTORY, NMWireGuardDeviceFactory)) static NMDevice * create_device (NMDeviceFactory *factory, const char *iface, const NMPlatformLink *plink, NMConnection *connection, gboolean *out_ignore) { return (NMDevice *) g_object_new (NM_TYPE_DEVICE_WIREGUARD, NM_DEVICE_IFACE, iface, NM_DEVICE_TYPE_DESC, "WireGuard", NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_WIREGUARD, NM_DEVICE_LINK_TYPE, NM_LINK_TYPE_WIREGUARD, NULL); } NM_DEVICE_FACTORY_DEFINE_INTERNAL (WIREGUARD, WireGuard, wireguard, NM_DEVICE_FACTORY_DECLARE_LINK_TYPES (NM_LINK_TYPE_WIREGUARD) NM_DEVICE_FACTORY_DECLARE_SETTING_TYPES (NM_SETTING_WIREGUARD_SETTING_NAME), factory_class->create_device = create_device; )