1 files changed, 517 insertions, 0 deletions
diff --git a/plugins/rfkill/rfkill-glib.c b/plugins/rfkill/rfkill-glib.c
new file mode 100644
index 0000000..9686cdf
--- /dev/null
+++ b/plugins/rfkill/rfkill-glib.c
@@ -0,0 +1,517 @@
+/*
+ *
+ * gnome-bluetooth - Bluetooth integration for GNOME
+ *
+ * Copyright (C) 2012 Bastien Nocera <[email protected]>
+ * Copyright © 2017 Endless Mobile, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include <glib.h>
+#include <gio/gio.h>
+#include <gio/gunixoutputstream.h>
+
+#include "rfkill-glib.h"
+
+enum {
+ CHANGED,
+ LAST_SIGNAL
+};
+
+static int signals[LAST_SIGNAL] = { 0 };
+
+#define CC_RFKILL_GLIB_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE((obj), \
+ CC_RFKILL_TYPE_GLIB, CcRfkillGlibPrivate))
+
+struct CcRfkillGlibPrivate {
+ GOutputStream *stream;
+ GIOChannel *channel;
+ guint watch_id;
+
+ /* Pending Bluetooth enablement */
+ guint change_all_timeout_id;
+ struct rfkill_event *event;
+ GTask *task;
+ GCancellable *cancellable;
+};
+
+G_DEFINE_TYPE(CcRfkillGlib, cc_rfkill_glib, G_TYPE_OBJECT)
+
+#define CHANGE_ALL_TIMEOUT 500
+
+static const char *type_to_string (unsigned int type);
+
+/* Note that this can return %FALSE without setting @error. */
+gboolean
+cc_rfkill_glib_send_event_finish (CcRfkillGlib *rfkill,
+ GAsyncResult *res,
+ GError **error)
+{
+ g_return_val_if_fail (RFKILL_IS_GLIB (rfkill), FALSE);
+ g_return_val_if_fail (g_task_is_valid (res, rfkill), FALSE);
+ g_return_val_if_fail (g_async_result_is_tagged (res, cc_rfkill_glib_send_event), FALSE);
+
+ return (g_task_propagate_int (G_TASK (res), error) >= 0);
+}
+
+static void
+write_done_cb (GObject *source_object,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ g_autoptr(GTask) task = G_TASK (user_data);
+ g_autoptr(GError) error = NULL;
+ gssize ret;
+
+ ret = g_output_stream_write_finish (G_OUTPUT_STREAM (source_object), res, &error);
+ if (ret < 0)
+ g_task_return_error (task, g_steal_pointer (&error));
+ else
+ g_task_return_int (task, ret);
+}
+
+void
+cc_rfkill_glib_send_event (CcRfkillGlib *rfkill,
+ struct rfkill_event *event,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_autoptr(GTask) task = NULL;
+
+ g_return_if_fail (RFKILL_IS_GLIB (rfkill));
+ g_return_if_fail (rfkill->priv->stream);
+
+ task = g_task_new (rfkill, cancellable, callback, user_data);
+ g_task_set_source_tag (task, cc_rfkill_glib_send_event);
+
+ g_output_stream_write_async (rfkill->priv->stream,
+ event, sizeof(struct rfkill_event),
+ G_PRIORITY_DEFAULT,
+ cancellable, write_done_cb,
+ g_object_ref (task));
+}
+
+/* Note that this can return %FALSE without setting @error. */
+gboolean
+cc_rfkill_glib_send_change_all_event_finish (CcRfkillGlib *rfkill,
+ GAsyncResult *res,
+ GError **error)
+{
+ g_return_val_if_fail (RFKILL_IS_GLIB (rfkill), FALSE);
+ g_return_val_if_fail (g_task_is_valid (res, rfkill), FALSE);
+ g_return_val_if_fail (g_async_result_is_tagged (res, cc_rfkill_glib_send_change_all_event), FALSE);
+
+ return g_task_propagate_boolean (G_TASK (res), error);
+}
+
+static void
+write_change_all_again_done_cb (GObject *source_object,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ CcRfkillGlib *rfkill = user_data;
+ g_autoptr(GError) error = NULL;
+ gssize ret;
+
+ g_debug ("Finished writing second RFKILL_OP_CHANGE_ALL event");
+
+ ret = g_output_stream_write_finish (G_OUTPUT_STREAM (source_object), res, &error);
+ if (ret < 0)
+ g_task_return_error (rfkill->priv->task, g_steal_pointer (&error));
+ else
+ g_task_return_boolean (rfkill->priv->task, ret >= 0);
+
+ g_clear_object (&rfkill->priv->task);
+ g_clear_pointer (&rfkill->priv->event, g_free);
+}
+
+static gboolean
+write_change_all_timeout_cb (CcRfkillGlib *rfkill)
+{
+ g_assert (rfkill->priv->event);
+
+ g_debug ("Sending second RFKILL_OP_CHANGE_ALL timed out");
+
+ g_task_return_new_error (rfkill->priv->task,
+ G_IO_ERROR, G_IO_ERROR_TIMED_OUT,
+ "Enabling rfkill for %s timed out",
+ type_to_string (rfkill->priv->event->type));
+
+ g_clear_object (&rfkill->priv->task);
+ g_clear_pointer (&rfkill->priv->event, g_free);
+ g_clear_object (&rfkill->priv->cancellable);
+ rfkill->priv->change_all_timeout_id = 0;
+
+ return G_SOURCE_REMOVE;
+}
+
+static void
+write_change_all_done_cb (GObject *source_object,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ CcRfkillGlib *rfkill = user_data;
+ g_autoptr(GError) error = NULL;
+ gssize ret;
+
+ g_debug ("Sending original RFKILL_OP_CHANGE_ALL event done");
+
+ ret = g_output_stream_write_finish (G_OUTPUT_STREAM (source_object), res, &error);
+ if (ret < 0) {
+ g_task_return_error (rfkill->priv->task, g_steal_pointer (&error));
+ goto bail;
+ } else if (rfkill->priv->event->soft == 1 ||
+ rfkill->priv->event->type != RFKILL_TYPE_BLUETOOTH) {
+ g_task_return_boolean (rfkill->priv->task, ret >= 0);
+ goto bail;
+ }
+
+ rfkill->priv->change_all_timeout_id = g_timeout_add (CHANGE_ALL_TIMEOUT,
+ (GSourceFunc) write_change_all_timeout_cb,
+ rfkill);
+
+ return;
+
+bail:
+ g_clear_object (&rfkill->priv->task);
+ g_clear_pointer (&rfkill->priv->event, g_free);
+ g_clear_object (&rfkill->priv->cancellable);
+}
+
+void
+cc_rfkill_glib_send_change_all_event (CcRfkillGlib *rfkill,
+ guint rfkill_type,
+ gboolean enable,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_autoptr(GTask) task = NULL;
+ struct rfkill_event *event;
+
+ g_return_if_fail (RFKILL_IS_GLIB (rfkill));
+ g_return_if_fail (rfkill->priv->stream);
+
+ task = g_task_new (rfkill, cancellable, callback, user_data);
+ g_task_set_source_tag (task, cc_rfkill_glib_send_change_all_event);
+
+ if (rfkill->priv->change_all_timeout_id > 0) {
+ g_source_remove (rfkill->priv->change_all_timeout_id);
+ rfkill->priv->change_all_timeout_id = 0;
+ write_change_all_timeout_cb (rfkill);
+ }
+
+ event = g_new0 (struct rfkill_event, 1);
+ event->op = RFKILL_OP_CHANGE_ALL;
+ event->type = rfkill_type;
+ event->soft = enable ? 1 : 0;
+
+ rfkill->priv->event = event;
+ rfkill->priv->task = g_object_ref (task);
+ rfkill->priv->cancellable = cancellable ? g_object_ref (cancellable) : NULL;
+ rfkill->priv->change_all_timeout_id = 0;
+
+ g_output_stream_write_async (rfkill->priv->stream,
+ event, sizeof(struct rfkill_event),
+ G_PRIORITY_DEFAULT,
+ cancellable, write_change_all_done_cb, rfkill);
+}
+
+static const char *
+type_to_string (unsigned int type)
+{
+ switch (type) {
+ case RFKILL_TYPE_ALL:
+ return "ALL";
+ case RFKILL_TYPE_WLAN:
+ return "WLAN";
+ case RFKILL_TYPE_BLUETOOTH:
+ return "BLUETOOTH";
+ case RFKILL_TYPE_UWB:
+ return "UWB";
+ case RFKILL_TYPE_WIMAX:
+ return "WIMAX";
+ case RFKILL_TYPE_WWAN:
+ return "WWAN";
+ default:
+ return "UNKNOWN";
+ }
+}
+
+static const char *
+op_to_string (unsigned int op)
+{
+ switch (op) {
+ case RFKILL_OP_ADD:
+ return "ADD";
+ case RFKILL_OP_DEL:
+ return "DEL";
+ case RFKILL_OP_CHANGE:
+ return "CHANGE";
+ case RFKILL_OP_CHANGE_ALL:
+ return "CHANGE_ALL";
+ default:
+ g_assert_not_reached ();
+ }
+}
+
+static void
+print_event (struct rfkill_event *event)
+{
+ g_debug ("RFKILL event: idx %u type %u (%s) op %u (%s) soft %u hard %u",
+ event->idx,
+ event->type, type_to_string (event->type),
+ event->op, op_to_string (event->op),
+ event->soft, event->hard);
+}
+
+static gboolean
+got_change_event (GList *events)
+{
+ GList *l;
+
+ g_assert (events != NULL);
+
+ for (l = events ; l != NULL; l = l->next) {
+ struct rfkill_event *event = l->data;
+
+ if (event->op == RFKILL_OP_CHANGE)
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static void
+emit_changed_signal_and_free (CcRfkillGlib *rfkill,
+ GList *events)
+{
+ if (events == NULL)
+ return;
+
+ g_signal_emit (G_OBJECT (rfkill),
+ signals[CHANGED],
+ 0, events);
+
+ if (rfkill->priv->change_all_timeout_id > 0 &&
+ got_change_event (events)) {
+ g_debug ("Received a change event after a RFKILL_OP_CHANGE_ALL event, re-sending RFKILL_OP_CHANGE_ALL");
+
+ g_output_stream_write_async (rfkill->priv->stream,
+ rfkill->priv->event, sizeof(struct rfkill_event),
+ G_PRIORITY_DEFAULT,
+ rfkill->priv->cancellable, write_change_all_again_done_cb, rfkill);
+
+ g_source_remove (rfkill->priv->change_all_timeout_id);
+ rfkill->priv->change_all_timeout_id = 0;
+ }
+
+ g_list_free_full (events, g_free);
+}
+
+static gboolean
+event_cb (GIOChannel *source,
+ GIOCondition condition,
+ CcRfkillGlib *rfkill)
+{
+ GList *events;
+
+ events = NULL;
+
+ if (condition & G_IO_IN) {
+ GIOStatus status;
+ struct rfkill_event event;
+ gsize read;
+
+ status = g_io_channel_read_chars (source,
+ (char *) &event,
+ sizeof(event),
+ &read,
+ NULL);
+
+ while (status == G_IO_STATUS_NORMAL && read == sizeof(event)) {
+ struct rfkill_event *event_ptr;
+
+ print_event (&event);
+
+ event_ptr = g_memdup (&event, sizeof(event));
+ events = g_list_prepend (events, event_ptr);
+
+ status = g_io_channel_read_chars (source,
+ (char *) &event,
+ sizeof(event),
+ &read,
+ NULL);
+ }
+ events = g_list_reverse (events);
+ } else {
+ g_debug ("Something unexpected happened on rfkill fd");
+ return FALSE;
+ }
+
+ emit_changed_signal_and_free (rfkill, events);
+
+ return TRUE;
+}
+
+static void
+cc_rfkill_glib_init (CcRfkillGlib *rfkill)
+{
+ CcRfkillGlibPrivate *priv;
+
+ priv = CC_RFKILL_GLIB_GET_PRIVATE (rfkill);
+ rfkill->priv = priv;
+}
+
+int
+cc_rfkill_glib_open (CcRfkillGlib *rfkill)
+{
+ CcRfkillGlibPrivate *priv;
+ int fd;
+ int ret;
+ GList *events;
+
+ g_return_val_if_fail (RFKILL_IS_GLIB (rfkill), -1);
+ g_return_val_if_fail (rfkill->priv->stream == NULL, -1);
+
+ priv = rfkill->priv;
+
+ fd = open("/dev/rfkill", O_RDWR);
+ if (fd < 0) {
+ if (errno == EACCES)
+ g_warning ("Could not open RFKILL control device, please verify your installation");
+ return fd;
+ }
+
+ ret = fcntl(fd, F_SETFL, O_NONBLOCK);
+ if (ret < 0) {
+ g_debug ("Can't set RFKILL control device to non-blocking");
+ close(fd);
+ return ret;
+ }
+
+ events = NULL;
+
+ while (1) {
+ struct rfkill_event event;
+ struct rfkill_event *event_ptr;
+ ssize_t len;
+
+ len = read(fd, &event, sizeof(event));
+ if (len < 0) {
+ if (errno == EAGAIN)
+ break;
+ g_debug ("Reading of RFKILL events failed");
+ break;
+ }
+
+ if (len != RFKILL_EVENT_SIZE_V1) {
+ g_warning ("Wrong size of RFKILL event\n");
+ continue;
+ }
+
+ if (event.op != RFKILL_OP_ADD)
+ continue;
+
+ g_debug ("Read killswitch of type '%s' (idx=%d): soft %d hard %d",
+ type_to_string (event.type),
+ event.idx, event.soft, event.hard);
+
+ event_ptr = g_memdup (&event, sizeof(event));
+ events = g_list_prepend (events, event_ptr);
+ }
+
+ /* Setup monitoring */
+ priv->channel = g_io_channel_unix_new (fd);
+ priv->watch_id = g_io_add_watch (priv->channel,
+ G_IO_IN | G_IO_HUP | G_IO_ERR,
+ (GIOFunc) event_cb,
+ rfkill);
+
+ if (events) {
+ events = g_list_reverse (events);
+ emit_changed_signal_and_free (rfkill, events);
+ } else {
+ g_debug ("No rfkill device available on startup");
+ }
+
+ /* Setup write stream */
+ priv->stream = g_unix_output_stream_new (fd, TRUE);
+
+ return fd;
+}
+
+static void
+cc_rfkill_glib_finalize (GObject *object)
+{
+ CcRfkillGlib *rfkill;
+ CcRfkillGlibPrivate *priv;
+
+ rfkill = CC_RFKILL_GLIB (object);
+ priv = rfkill->priv;
+
+ if (priv->change_all_timeout_id > 0)
+ write_change_all_timeout_cb (rfkill);
+
+ /* cleanup monitoring */
+ if (priv->watch_id > 0) {
+ g_source_remove (priv->watch_id);
+ priv->watch_id = 0;
+ g_io_channel_shutdown (priv->channel, FALSE, NULL);
+ g_io_channel_unref (priv->channel);
+ }
+ g_clear_object (&priv->stream);
+
+ G_OBJECT_CLASS(cc_rfkill_glib_parent_class)->finalize(object);
+}
+
+static void
+cc_rfkill_glib_class_init(CcRfkillGlibClass *klass)
+{
+ GObjectClass *object_class = (GObjectClass *) klass;
+
+ g_type_class_add_private(klass, sizeof(CcRfkillGlibPrivate));
+ object_class->finalize = cc_rfkill_glib_finalize;
+
+ signals[CHANGED] =
+ g_signal_new ("changed",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (CcRfkillGlibClass, changed),
+ NULL, NULL,
+ NULL,
+ G_TYPE_NONE, 1, G_TYPE_POINTER);
+
+}
+
+CcRfkillGlib *
+cc_rfkill_glib_new (void)
+{
+ return CC_RFKILL_GLIB (g_object_new (CC_RFKILL_TYPE_GLIB, NULL));
+}