ethernet: honor the 802-1x.optional propertybg/802-1x-optional-on-1-20

If the 802.1X authentication fails and 802-1x.optional is set,
continue with activation. In this case, subscribe to the auth-state
supplicant property so that any dynamic IP method can be restarted
when the authentication succeeds. This is because upon authentication
the switch could have changed the VLAN we are connected to.

(cherry picked from commit 8afce75bf37eaf8ea7f7c52cf8d58ef2e7a7c180)

1 files changed, 81 insertions, 23 deletions

diff --git a/src/devices/nm-device-ethernet.c b/src/devices/nm-device-ethernet.c
index b1701c6988..8571e526cb 100644
--- a/src/devices/nm-device-ethernet.c
+++ b/src/devices/nm-device-ethernet.c
@@ -65,6 +65,7 @@ typedef struct Supplicant {
 
 	/* signal handler ids */
 	gulong iface_state_id;
+	gulong auth_state_id;
 
 	/* Timeouts and idles */
 	guint con_timeout_id;
@@ -415,6 +416,7 @@ supplicant_interface_release (NMDeviceEthernet *self)
 	nm_clear_g_source (&priv->supplicant_timeout_id);
 	nm_clear_g_source (&priv->supplicant.con_timeout_id);
 	nm_clear_g_signal_handler (priv->supplicant.iface, &priv->supplicant.iface_state_id);
+	nm_clear_g_signal_handler (priv->supplicant.iface, &priv->supplicant.auth_state_id);
 
 	if (priv->supplicant.iface) {
 		nm_supplicant_interface_disconnect (priv->supplicant.iface);
@@ -423,6 +425,62 @@ supplicant_interface_release (NMDeviceEthernet *self)
 }
 
 static void
+supplicant_auth_state_changed (NMSupplicantInterface *iface,
+                               GParamSpec *pspec,
+                               NMDeviceEthernet *self)
+{
+	NMDeviceEthernetPrivate *priv = NM_DEVICE_ETHERNET_GET_PRIVATE (self);
+	NMSupplicantAuthState state;
+
+	state = nm_supplicant_interface_get_auth_state (priv->supplicant.iface);
+	_LOGD (LOGD_CORE, "supplicant auth state changed to %u", (unsigned) state);
+
+	if (state == NM_SUPPLICANT_AUTH_STATE_SUCCESS) {
+		nm_clear_g_signal_handler (priv->supplicant.iface, &priv->supplicant.iface_state_id);
+		nm_device_update_dynamic_ip_setup (NM_DEVICE (self));
+	}
+}
+
+static gboolean
+wired_auth_is_optional (NMDeviceEthernet *self)
+{
+	NMSetting8021x *s_8021x;
+
+	s_8021x = nm_device_get_applied_setting (NM_DEVICE (self), NM_TYPE_SETTING_802_1X);
+	g_return_val_if_fail (s_8021x, FALSE);
+	return nm_setting_802_1x_get_optional (s_8021x);
+}
+
+static void
+wired_auth_cond_fail (NMDeviceEthernet *self, NMDeviceStateReason reason)
+{
+	NMDeviceEthernetPrivate *priv = NM_DEVICE_ETHERNET_GET_PRIVATE (self);
+	NMDevice *device = NM_DEVICE (self);
+
+	if (wired_auth_is_optional (self)) {
+		_LOGI (LOGD_DEVICE | LOGD_ETHER,
+		       "Activation: (ethernet) 802.1X authentication is optional, continuing after a failure");
+		if (NM_IN_SET (nm_device_get_state (device),
+		               NM_DEVICE_STATE_CONFIG,
+		               NM_DEVICE_STATE_NEED_AUTH))
+			nm_device_activate_schedule_stage3_ip_config_start (device);
+
+		if (!priv->supplicant.auth_state_id) {
+			priv->supplicant.auth_state_id = g_signal_connect (priv->supplicant.iface,
+			                                                   "notify::" NM_SUPPLICANT_INTERFACE_AUTH_STATE,
+			                                                   G_CALLBACK (supplicant_auth_state_changed),
+			                                                   self);
+		}
+		return;
+	}
+
+	supplicant_interface_release (self);
+	nm_device_state_changed (NM_DEVICE (self),
+	                         NM_DEVICE_STATE_FAILED,
+	                         reason);
+}
+
+static void
 wired_secrets_cb (NMActRequest *req,
                   NMActRequestGetSecretsCallId *call_id,
                   NMSettingsConnection *connection,
@@ -451,11 +509,12 @@ wired_secrets_cb (NMActRequest *req,
 
 	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);
+		wired_auth_cond_fail (self, NM_DEVICE_STATE_REASON_NO_SECRETS);
+		return;
+	}
+
+	supplicant_interface_release (self);
+	nm_device_activate_schedule_stage1_device_prepare (device);
 }
 
 static void
@@ -506,9 +565,7 @@ link_timeout_cb (gpointer user_data)
 	req = nm_device_get_act_request (device);
 
 	if (nm_device_get_state (device) == NM_DEVICE_STATE_ACTIVATED) {
-		nm_device_state_changed (device,
-		                         NM_DEVICE_STATE_FAILED,
-		                         NM_DEVICE_STATE_REASON_SUPPLICANT_TIMEOUT);
+		wired_auth_cond_fail (self, NM_DEVICE_STATE_REASON_SUPPLICANT_TIMEOUT);
 		return FALSE;
 	}
 
@@ -528,7 +585,8 @@ link_timeout_cb (gpointer user_data)
 
 	_LOGI (LOGD_DEVICE | LOGD_ETHER,
 	       "Activation: (ethernet) disconnected during authentication, asking for new key.");
-	supplicant_interface_release (self);
+	if (!wired_auth_is_optional (self))
+		supplicant_interface_release (self);
 
 	nm_device_state_changed (device, NM_DEVICE_STATE_NEED_AUTH, NM_DEVICE_STATE_REASON_SUPPLICANT_DISCONNECT);
 	wired_secrets_get_secrets (self, setting_name, NM_SECRET_AGENT_GET_SECRETS_FLAG_REQUEST_NEW);
@@ -537,7 +595,7 @@ link_timeout_cb (gpointer user_data)
 
 time_out:
 	_LOGW (LOGD_DEVICE | LOGD_ETHER, "link timed out.");
-	nm_device_state_changed (device, NM_DEVICE_STATE_FAILED, NM_DEVICE_STATE_REASON_SUPPLICANT_DISCONNECT);
+	wired_auth_cond_fail (self, NM_DEVICE_STATE_REASON_SUPPLICANT_DISCONNECT);
 
 	return FALSE;
 }
@@ -652,11 +710,8 @@ supplicant_iface_state_cb (NMSupplicantInterface *iface,
 	case NM_SUPPLICANT_INTERFACE_STATE_DOWN:
 		supplicant_interface_release (self);
 
-		if ((devstate == NM_DEVICE_STATE_ACTIVATED) || nm_device_is_activating (device)) {
-			nm_device_state_changed (device,
-			                         NM_DEVICE_STATE_FAILED,
-			                         NM_DEVICE_STATE_REASON_SUPPLICANT_FAILED);
-		}
+		if ((devstate == NM_DEVICE_STATE_ACTIVATED) || nm_device_is_activating (device))
+			wired_auth_cond_fail (self, NM_DEVICE_STATE_REASON_SUPPLICANT_FAILED);
 		break;
 	default:
 		break;
@@ -685,6 +740,15 @@ handle_auth_or_fail (NMDeviceEthernet *self,
 		return NM_ACT_STAGE_RETURN_FAILURE;
 	}
 
+	_LOGI (LOGD_DEVICE | LOGD_ETHER, "Activation: (ethernet) asking for new secrets");
+
+	/* Don't tear down supplicant if the authentication is optional
+	 * because in case of a failure in getting new secrets we want to
+	 * keep the supplicant alive.
+	 */
+	if (!wired_auth_is_optional (self))
+		supplicant_interface_release (self);
+
 	wired_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));
@@ -710,12 +774,8 @@ supplicant_connection_timeout_cb (gpointer user_data)
 	_LOGW (LOGD_DEVICE | LOGD_ETHER,
 	       "Activation: (ethernet) association took too long.");
 
-	supplicant_interface_release (self);
 	req = nm_device_get_act_request (device);
-	g_assert (req);
-
 	connection = nm_act_request_get_settings_connection (req);
-	g_assert (connection);
 
 	/* Ask for new secrets only if we've never activated this connection
 	 * before.  If we've connected before, don't bother the user with dialogs,
@@ -724,10 +784,8 @@ supplicant_connection_timeout_cb (gpointer user_data)
 	if (nm_settings_connection_get_timestamp (connection, &timestamp))
 		new_secrets = !timestamp;
 
-	if (handle_auth_or_fail (self, req, new_secrets) == NM_ACT_STAGE_RETURN_POSTPONE)
-		_LOGW (LOGD_DEVICE | LOGD_ETHER, "Activation: (ethernet) asking for new secrets");
-	else
-		nm_device_state_changed (device, NM_DEVICE_STATE_FAILED, NM_DEVICE_STATE_REASON_NO_SECRETS);
+	if (handle_auth_or_fail (self, req, new_secrets) == NM_ACT_STAGE_RETURN_FAILURE)
+		wired_auth_cond_fail (self, NM_DEVICE_STATE_REASON_NO_SECRETS);
 
 	return FALSE;
 }