Implement IPC get_seats command

completions/zsh/_swaymsg

@@ -15,6 +15,7 @@
 
 types=(
 'get_workspaces'
+'get_seats'
 'get_inputs'
 'get_outputs'
 'get_tree'

include/ipc.h

@@ -14,6 +14,7 @@ enum ipc_command_type {
 	IPC_GET_VERSION = 7,
 	IPC_GET_INPUTS = 8,
 	IPC_GET_CLIPBOARD = 9,
+	IPC_GET_SEATS = 10,
 	// Events send from sway to clients. Events have the highest bits set.
 	IPC_EVENT_WORKSPACE = ((1<<31) | 0),
 	IPC_EVENT_OUTPUT = ((1<<31) | 1),

include/sway/config.h

@@ -263,8 +263,10 @@ enum ipc_feature {
 	IPC_FEATURE_EVENT_BINDING = 4096,
 	IPC_FEATURE_EVENT_INPUT = 8192,
 	IPC_FEATURE_GET_CLIPBOARD = 16384,
+	IPC_FEATURE_GET_SEATS = 32768,
 
-	IPC_FEATURE_ALL_COMMANDS = 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 16384,
+	IPC_FEATURE_ALL_COMMANDS =
+		1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 16384 | 32768,
 	IPC_FEATURE_ALL_EVENTS = 256 | 512 | 1024 | 2048 | 4096 | 8192,
 
 	IPC_FEATURE_ALL = IPC_FEATURE_ALL_COMMANDS | IPC_FEATURE_ALL_EVENTS,

include/sway/ipc-json.h

@@ -9,6 +9,7 @@ json_object *ipc_json_get_version();
 json_object *ipc_json_describe_container(struct sway_container *c);
 json_object *ipc_json_describe_container_recursive(struct sway_container *c);
 json_object *ipc_json_describe_input(struct sway_input_device *device);
+json_object *ipc_json_describe_seat(struct sway_seat *seat);
 json_object *ipc_json_describe_bar_config(struct bar_config *bar);
 
 #endif

sway/ipc-json.c

@@ -267,6 +267,31 @@ json_object *ipc_json_describe_input(struct sway_input_device *device) {
 	return object;
 }
 
+json_object *ipc_json_describe_seat(struct sway_seat *seat) {
+	if (!(sway_assert(seat, "Seat must not be null"))) {
+		return NULL;
+	}
+
+	json_object *object = json_object_new_object();
+	struct sway_container *focus = seat_get_focus(seat);
+
+	json_object_object_add(object, "name",
+		json_object_new_string(seat->wlr_seat->name));
+	json_object_object_add(object, "capabilities",
+		json_object_new_int(seat->wlr_seat->capabilities));
+	json_object_object_add(object, "focus",
+		json_object_new_int(focus ? focus->id : 0));
+
+	json_object *devices = json_object_new_array();
+	struct sway_seat_device *device = NULL;
+	wl_list_for_each(device, &seat->devices, link) {
+		json_object_array_add(devices, ipc_json_describe_input(device->input_device));
+	}
+	json_object_object_add(object, "devices", devices);
+
+	return object;
+}
+
 json_object *ipc_json_describe_bar_config(struct bar_config *bar) {
 	if (!sway_assert(bar, "Bar must not be NULL")) {
 		return NULL;

sway/ipc-server.c

@@ -546,6 +546,19 @@ void ipc_client_handle_command(struct ipc_client *client) {
 		goto exit_cleanup;
 	}
 
+	case IPC_GET_SEATS:
+	{
+		json_object *seats = json_object_new_array();
+		struct sway_seat *seat = NULL;
+		wl_list_for_each(seat, &input_manager->seats, link) {
+			json_object_array_add(seats, ipc_json_describe_seat(seat));
+		}
+		const char *json_string = json_object_to_json_string(seats);
+		ipc_send_reply(client, json_string, (uint32_t)strlen(json_string));
+		json_object_put(seats); // free
+		goto exit_cleanup;
+	}
+
 	case IPC_GET_TREE:
 	{
 		json_object *tree =

sway/sway-security.7.txt

@@ -195,6 +195,9 @@ The following commands are available within this block:
 **outputs** <enabled|disabled>::
 	Controls GET_OUTPUTS.
 
+**seats** <enabled|disabled>::
+	Controls GET_SEATS.
+
 **tree** <enabled|disabled>::
 	Controls GET_TREE.
 

swaymsg/main.c

@@ -106,6 +106,35 @@ static void pretty_print_input(json_object *i) {
 		json_object_get_int(vendor));
 }
 
+static void pretty_print_seat(json_object *i) {
+	json_object *name, *capabilities, *devices;
+	json_object_object_get_ex(i, "name", &name);
+	json_object_object_get_ex(i, "capabilities", &capabilities);
+	json_object_object_get_ex(i, "devices", &devices);
+
+	const char *fmt =
+		"Seat: %s\n"
+		"  Capabilities: %d\n";
+
+	printf(fmt, json_object_get_string(name),
+		json_object_get_int(capabilities));
+
+	size_t devices_len = json_object_array_length(devices);
+	if (devices_len > 0) {
+		printf("  Devices:\n");
+		for (size_t i = 0; i < devices_len; ++i) {
+			json_object *device = json_object_array_get_idx(devices, i);
+
+			json_object *device_name;
+			json_object_object_get_ex(device, "name", &device_name);
+
+			printf("    %s\n", json_object_get_string(device_name));
+		}
+	}
+
+	printf("\n");
+}
+
 static void pretty_print_output(json_object *o) {
 	json_object *name, *rect, *focused, *active, *ws;
 	json_object_object_get_ex(o, "name", &name);
@@ -211,7 +240,8 @@ static void pretty_print_clipboard(json_object *v) {
 static void pretty_print(int type, json_object *resp) {
 	if (type != IPC_COMMAND && type != IPC_GET_WORKSPACES &&
 			type != IPC_GET_INPUTS && type != IPC_GET_OUTPUTS &&
-			type != IPC_GET_VERSION && type != IPC_GET_CLIPBOARD) {
+			type != IPC_GET_VERSION && type != IPC_GET_CLIPBOARD &&
+			type != IPC_GET_SEATS) {
 		printf("%s\n", json_object_to_json_string_ext(resp,
 			JSON_C_TO_STRING_PRETTY | JSON_C_TO_STRING_SPACED));
 		return;
@@ -244,6 +274,9 @@ static void pretty_print(int type, json_object *resp) {
 		case IPC_GET_OUTPUTS:
 			pretty_print_output(obj);
 			break;
+		case IPC_GET_SEATS:
+			pretty_print_seat(obj);
+			break;
 		}
 	}
 }
@@ -324,6 +357,8 @@ int main(int argc, char **argv) {
 		type = IPC_COMMAND;
 	} else if (strcasecmp(cmdtype, "get_workspaces") == 0) {
 		type = IPC_GET_WORKSPACES;
+	} else if (strcasecmp(cmdtype, "get_seats") == 0) {
+		type = IPC_GET_SEATS;
 	} else if (strcasecmp(cmdtype, "get_inputs") == 0) {
 		type = IPC_GET_INPUTS;
 	} else if (strcasecmp(cmdtype, "get_outputs") == 0) {

swaymsg/swaymsg.1.txt

@@ -48,6 +48,9 @@ IPC Message Types
 *get_workspaces*::
 	Gets a JSON-encoded list of workspaces and their status.
 
+*get_seats*::
+	Gets a JSON-encoded list of current seats.
+
 *get_inputs*::
 	Gets a JSON-encoded list of current inputs.