[1/1] client: Add battery command

Commit Message

Sonny Sasaka June 30, 2020, 5:47 p.m. UTC

This adds the "battery" command to show battery information of a peer
device based on org.bluez.Battery1 API. Example usage:

[bluetooth]# battery XX:XX:XX:XX:XX:XX
Percentage: 100%
---
 client/main.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

Comments

[e-mail] June 30, 2020, 6:18 p.m. UTC | #1

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
While we are preparing for reviewing the patches, we found the following
issue/warning.

Test Result:
checkpatch Failed

Outputs:
WARNING:LINE_SPACING: Missing a blank line after declarations
#79: FILE: client/main.c:789:
+		GDBusProxy *proxy = list->data;
+		if (strcmp(g_dbus_proxy_get_path(proxy), path) == 0)

- total: 0 errors, 1 warnings, 110 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Your patch has style problems, please review.

NOTE: Ignored message types: COMMIT_MESSAGE COMPLEX_MACRO CONST_STRUCT FILE_PATH_CHANGES MISSING_SIGN_OFF PREFER_PACKED SPLIT_STRING SSCANF_TO_KSTRTO

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.



---
Regards,
Linux Bluetooth

Patch

diff --git a/client/main.c b/client/main.c
index 422da5593..cc5eb7ce8 100644
--- a/client/main.c
+++ b/client/main.c
@@ -65,6 +65,7 @@  static struct adapter *default_ctrl;
 static GDBusProxy *default_dev;
 static GDBusProxy *default_attr;
 static GList *ctrl_list;
+static GList *battery_proxies;
 
 static const char *agent_arguments[] = {
 	"on",
@@ -107,7 +108,9 @@  static void disconnect_handler(DBusConnection *connection, void *user_data)
 	bt_shell_set_prompt(PROMPT_OFF);
 
 	g_list_free_full(ctrl_list, proxy_leak);
+	g_list_free_full(battery_proxies, proxy_leak);
 	ctrl_list = NULL;
+	battery_proxies = NULL;
 
 	default_ctrl = NULL;
 }
@@ -445,6 +448,16 @@  done:
 	g_free(desc);
 }
 
+static void battery_added(GDBusProxy *proxy)
+{
+	battery_proxies = g_list_append(battery_proxies, proxy);
+}
+
+static void battery_removed(GDBusProxy *proxy)
+{
+	battery_proxies = g_list_remove(battery_proxies, proxy);
+}
+
 static void device_added(GDBusProxy *proxy)
 {
 	DBusMessageIter iter;
@@ -539,6 +552,8 @@  static void proxy_added(GDBusProxy *proxy, void *user_data)
 		gatt_add_manager(proxy);
 	} else if (!strcmp(interface, "org.bluez.LEAdvertisingManager1")) {
 		ad_manager_added(proxy);
+	} else if (!strcmp(interface, "org.bluez.Battery1")) {
+		battery_added(proxy);
 	}
 }
 
@@ -630,6 +645,8 @@  static void proxy_removed(GDBusProxy *proxy, void *user_data)
 		gatt_remove_manager(proxy);
 	} else if (!strcmp(interface, "org.bluez.LEAdvertisingManager1")) {
 		ad_unregister(dbus_conn, NULL);
+	} else if (!strcmp(interface, "org.bluez.Battery1")) {
+		battery_removed(proxy);
 	}
 }
 
@@ -763,6 +780,19 @@  static struct adapter *find_ctrl_by_address(GList *source, const char *address)
 	return NULL;
 }
 
+static GDBusProxy *find_battery_by_path(GList *source, const char *path)
+{
+	GList *list;
+
+	for (list = g_list_first(source); list; list = g_list_next(list)) {
+		GDBusProxy *proxy = list->data;
+		if (strcmp(g_dbus_proxy_get_path(proxy), path) == 0)
+			return proxy;
+	}
+
+	return NULL;
+}
+
 static GDBusProxy *find_proxy_by_address(GList *source, const char *address)
 {
 	GList *list;
@@ -1650,6 +1680,35 @@  static void cmd_info(int argc, char *argv[])
 	return bt_shell_noninteractive_quit(EXIT_SUCCESS);
 }
 
+static void cmd_battery(int argc, char *argv[])
+{
+	DBusMessageIter iter;
+	GDBusProxy *device_proxy;
+	GDBusProxy *battery_proxy;
+	unsigned char percentage;
+
+	device_proxy = find_device(argc, argv);
+	if (!device_proxy)
+		return bt_shell_noninteractive_quit(EXIT_FAILURE);
+
+	battery_proxy = find_battery_by_path(battery_proxies,
+					g_dbus_proxy_get_path(device_proxy));
+	if (!battery_proxy) {
+		bt_shell_printf("Device %s does not have battery information\n",
+				argv[1]);
+		return bt_shell_noninteractive_quit(EXIT_FAILURE);
+	}
+
+	if (g_dbus_proxy_get_property(battery_proxy, "Percentage", &iter) ==
+									FALSE)
+		return bt_shell_noninteractive_quit(EXIT_FAILURE);
+
+	dbus_message_iter_get_basic(&iter, &percentage);
+	bt_shell_printf("Percentage: %d%%\n", percentage);
+
+	return bt_shell_noninteractive_quit(EXIT_SUCCESS);
+}
+
 static void pair_reply(DBusMessage *message, void *user_data)
 {
 	DBusError error;
@@ -2785,6 +2844,8 @@  static const struct bt_shell_menu main_menu = {
 							dev_generator },
 	{ "disconnect",   "[dev]",    cmd_disconn, "Disconnect device",
 							dev_generator },
+	{ "battery",      "[dev]",    cmd_battery, "Show device battery",
+							dev_generator },
 	{ } },
 };