mirror of
https://github.com/kovidgoyal/kitty.git
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351 lines
12 KiB
C
Vendored
351 lines
12 KiB
C
Vendored
//========================================================================
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// GLFW 3.4 XKB - www.glfw.org
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//------------------------------------------------------------------------
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// Copyright (c) 2018 Kovid Goyal <kovid@kovidgoyal.net>
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would
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// be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such, and must not
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// be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source
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// distribution.
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//
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//========================================================================
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#include "internal.h"
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#include "dbus_glfw.h"
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#include "../kitty/monotonic.h"
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#include <stdlib.h>
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#include <string.h>
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static void
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report_error(DBusError *err, const char *fmt, ...) {
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static char buf[4096];
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va_list args;
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va_start(args, fmt);
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int n = vsnprintf(buf, sizeof(buf), fmt, args);
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va_end(args);
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if (n >= 0 && (size_t)n < (sizeof(buf) - 256)) snprintf(buf + n, sizeof(buf) - n, ". DBUS error: %s", err->message ? err->message : "(null)");
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_glfwInputError(GLFW_PLATFORM_ERROR, "%s", buf);
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dbus_error_free(err);
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}
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static _GLFWDBUSData *dbus_data = NULL;
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static DBusConnection *session_bus = NULL;
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bool
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glfw_dbus_init(_GLFWDBUSData *dbus, EventLoopData *eld) {
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dbus->eld = eld;
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dbus_data = dbus;
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return true;
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}
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static void
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on_dbus_watch_ready(int fd UNUSED, int events, void *data) {
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DBusWatch *watch = (DBusWatch*)data;
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unsigned int flags = 0;
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if (events & POLLERR) flags |= DBUS_WATCH_ERROR;
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if (events & POLLHUP) flags |= DBUS_WATCH_HANGUP;
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if (events & POLLIN) flags |= DBUS_WATCH_READABLE;
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if (events & POLLOUT) flags |= DBUS_WATCH_WRITABLE;
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dbus_watch_handle(watch, flags);
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}
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static int
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events_for_watch(DBusWatch *watch) {
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int events = 0;
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unsigned int flags = dbus_watch_get_flags(watch);
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if (flags & DBUS_WATCH_READABLE) events |= POLLIN;
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if (flags & DBUS_WATCH_WRITABLE) events |= POLLOUT;
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return events;
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}
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static dbus_bool_t
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add_dbus_watch(DBusWatch *watch, void *data) {
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id_type watch_id = addWatch(dbus_data->eld, data, dbus_watch_get_unix_fd(watch), events_for_watch(watch), dbus_watch_get_enabled(watch), on_dbus_watch_ready, watch);
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if (!watch_id) return FALSE;
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id_type *idp = malloc(sizeof(id_type));
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if (!idp) return FALSE;
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*idp = watch_id;
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dbus_watch_set_data(watch, idp, free);
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return TRUE;
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}
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static void
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remove_dbus_watch(DBusWatch *watch, void *data UNUSED) {
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id_type *idp = dbus_watch_get_data(watch);
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if (idp) removeWatch(dbus_data->eld, *idp);
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}
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static void
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toggle_dbus_watch(DBusWatch *watch, void *data UNUSED) {
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id_type *idp = dbus_watch_get_data(watch);
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if (idp) toggleWatch(dbus_data->eld, *idp, dbus_watch_get_enabled(watch));
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}
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static void
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on_dbus_timer_ready(id_type timer_id UNUSED, void *data) {
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if (data) {
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DBusTimeout *t = (DBusTimeout*)data;
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dbus_timeout_handle(t);
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}
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}
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static dbus_bool_t
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add_dbus_timeout(DBusTimeout *timeout, void *data) {
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int enabled = dbus_timeout_get_enabled(timeout) ? 1 : 0;
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monotonic_t interval = ms_to_monotonic_t(dbus_timeout_get_interval(timeout));
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if (interval < 0) return FALSE;
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id_type timer_id = addTimer(dbus_data->eld, data, interval, enabled, true, on_dbus_timer_ready, timeout, NULL);
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if (!timer_id) return FALSE;
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id_type *idp = malloc(sizeof(id_type));
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if (!idp) {
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removeTimer(dbus_data->eld, timer_id);
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return FALSE;
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}
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*idp = timer_id;
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dbus_timeout_set_data(timeout, idp, free);
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return TRUE;
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}
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static void
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remove_dbus_timeout(DBusTimeout *timeout, void *data UNUSED) {
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id_type *idp = dbus_timeout_get_data(timeout);
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if (idp) removeTimer(dbus_data->eld, *idp);
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}
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static void
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toggle_dbus_timeout(DBusTimeout *timeout, void *data UNUSED) {
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id_type *idp = dbus_timeout_get_data(timeout);
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if (idp) toggleTimer(dbus_data->eld, *idp, dbus_timeout_get_enabled(timeout));
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}
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DBusConnection*
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glfw_dbus_connect_to(const char *path, const char* err_msg, const char *name, bool register_on_bus) {
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DBusError err;
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dbus_error_init(&err);
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DBusConnection *ans = dbus_connection_open_private(path, &err);
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if (!ans) {
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report_error(&err, err_msg);
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return NULL;
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}
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dbus_connection_set_exit_on_disconnect(ans, FALSE);
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dbus_error_free(&err);
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if (register_on_bus) {
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if (!dbus_bus_register(ans, &err)) {
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report_error(&err, err_msg);
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return NULL;
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}
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}
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if (!dbus_connection_set_watch_functions(ans, add_dbus_watch, remove_dbus_watch, toggle_dbus_watch, (void*)name, NULL)) {
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_glfwInputError(GLFW_PLATFORM_ERROR, "Failed to set DBUS watches on connection to: %s", path);
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dbus_connection_close(ans);
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dbus_connection_unref(ans);
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return NULL;
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}
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if (!dbus_connection_set_timeout_functions(ans, add_dbus_timeout, remove_dbus_timeout, toggle_dbus_timeout, (void*)name, NULL)) {
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_glfwInputError(GLFW_PLATFORM_ERROR, "Failed to set DBUS timeout functions on connection to: %s", path);
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dbus_connection_close(ans);
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dbus_connection_unref(ans);
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return NULL;
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}
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return ans;
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}
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void
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glfw_dbus_dispatch(DBusConnection *conn) {
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while(dbus_connection_dispatch(conn) == DBUS_DISPATCH_DATA_REMAINS);
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}
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void
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glfw_dbus_session_bus_dispatch(void) {
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if (session_bus) glfw_dbus_dispatch(session_bus);
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}
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void
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glfw_dbus_terminate(_GLFWDBUSData *dbus UNUSED) {
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if (dbus_data) {
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dbus_data->eld = NULL;
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dbus_data = NULL;
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}
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if (session_bus) {
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dbus_connection_unref(session_bus);
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session_bus = NULL;
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}
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}
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void
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glfw_dbus_close_connection(DBusConnection *conn) {
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dbus_connection_close(conn);
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dbus_connection_unref(conn);
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}
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bool
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glfw_dbus_get_args(DBusMessage *msg, const char *failmsg, ...) {
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DBusError err;
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dbus_error_init(&err);
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va_list ap;
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va_start(ap, failmsg);
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int firstarg = va_arg(ap, int);
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bool ret = dbus_message_get_args_valist(msg, &err, firstarg, ap) ? true : false;
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va_end(ap);
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if (!ret) report_error(&err, failmsg);
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return ret;
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}
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typedef struct {
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dbus_pending_callback callback;
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void *user_data;
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} MethodResponse;
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static const char*
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format_message_error(DBusError *err) {
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static char buf[1024];
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snprintf(buf, sizeof(buf), "[%s] %s", err->name ? err->name : "", err->message);
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return buf;
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}
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static void
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method_reply_received(DBusPendingCall *pending, void *user_data) {
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MethodResponse *res = (MethodResponse*)user_data;
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DBusMessage *msg = dbus_pending_call_steal_reply(pending);
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if (msg) {
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DBusError err;
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dbus_error_init(&err);
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if (dbus_set_error_from_message(&err, msg)) res->callback(NULL, format_message_error(&err), res->user_data);
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else res->callback(msg, NULL, res->user_data);
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dbus_message_unref(msg);
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}
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}
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bool
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call_method_with_msg(DBusConnection *conn, DBusMessage *msg, int timeout, dbus_pending_callback callback, void *user_data) {
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bool retval = false;
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#define REPORT(errs) _glfwInputError(GLFW_PLATFORM_ERROR, "Failed to call DBUS method: node=%s path=%s interface=%s method=%s, with error: %s", dbus_message_get_destination(msg), dbus_message_get_path(msg), dbus_message_get_interface(msg), dbus_message_get_member(msg), errs)
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if (callback) {
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DBusPendingCall *pending = NULL;
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if (dbus_connection_send_with_reply(conn, msg, &pending, timeout)) {
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MethodResponse *res = malloc(sizeof(MethodResponse));
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if (!res) return false;
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res->callback = callback;
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res->user_data = user_data;
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dbus_pending_call_set_notify(pending, method_reply_received, res, free);
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retval = true;
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} else {
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REPORT("out of memory");
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}
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} else {
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if (dbus_connection_send(conn, msg, NULL)) {
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retval = true;
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} else {
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REPORT("out of memory");
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}
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}
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return retval;
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#undef REPORT
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}
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static bool
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call_method(DBusConnection *conn, const char *node, const char *path, const char *interface, const char *method, int timeout, dbus_pending_callback callback, void *user_data, va_list ap) {
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if (!conn || !path) return false;
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DBusMessage *msg = dbus_message_new_method_call(node, path, interface, method);
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if (!msg) return false;
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bool retval = false;
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int firstarg = va_arg(ap, int);
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if ((firstarg == DBUS_TYPE_INVALID) || dbus_message_append_args_valist(msg, firstarg, ap)) {
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retval = call_method_with_msg(conn, msg, timeout, callback, user_data);
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} else {
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_glfwInputError(GLFW_PLATFORM_ERROR, "Failed to call DBUS method: %s on node: %s and interface: %s could not add arguments", method, node, interface);
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}
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dbus_message_unref(msg);
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return retval;
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}
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bool
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glfw_dbus_call_method_with_reply(DBusConnection *conn, const char *node, const char *path, const char *interface, const char *method, int timeout, dbus_pending_callback callback, void* user_data, ...) {
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bool retval;
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va_list ap;
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va_start(ap, user_data);
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retval = call_method(conn, node, path, interface, method, timeout, callback, user_data, ap);
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va_end(ap);
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return retval;
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}
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bool
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glfw_dbus_call_method_no_reply(DBusConnection *conn, const char *node, const char *path, const char *interface, const char *method, ...) {
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bool retval;
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va_list ap;
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va_start(ap, method);
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retval = call_method(conn, node, path, interface, method, DBUS_TIMEOUT_USE_DEFAULT, NULL, NULL, ap);
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va_end(ap);
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return retval;
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}
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int
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glfw_dbus_match_signal(DBusMessage *msg, const char *interface, ...) {
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va_list ap;
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va_start(ap, interface);
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int ans = -1, num = -1;
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while(1) {
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num++;
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const char *name = va_arg(ap, const char*);
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if (!name) break;
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if (dbus_message_is_signal(msg, interface, name)) { ans = num; break; }
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}
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va_end(ap);
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return ans;
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}
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static void
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glfw_dbus_connect_to_session_bus(void) {
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DBusError error;
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dbus_error_init(&error);
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if (session_bus) {
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dbus_connection_unref(session_bus);
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}
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session_bus = dbus_bus_get(DBUS_BUS_SESSION, &error);
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if (dbus_error_is_set(&error)) {
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report_error(&error, "Failed to connect to DBUS session bus");
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session_bus = NULL;
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return;
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}
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static const char *name = "session-bus";
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if (!dbus_connection_set_watch_functions(session_bus, add_dbus_watch, remove_dbus_watch, toggle_dbus_watch, (void*)name, NULL)) {
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_glfwInputError(GLFW_PLATFORM_ERROR, "Failed to set DBUS watches on connection to: %s", name);
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dbus_connection_close(session_bus);
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dbus_connection_unref(session_bus);
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return;
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}
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if (!dbus_connection_set_timeout_functions(session_bus, add_dbus_timeout, remove_dbus_timeout, toggle_dbus_timeout, (void*)name, NULL)) {
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_glfwInputError(GLFW_PLATFORM_ERROR, "Failed to set DBUS timeout functions on connection to: %s", name);
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dbus_connection_close(session_bus);
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dbus_connection_unref(session_bus);
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return;
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}
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}
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DBusConnection *
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glfw_dbus_session_bus(void) {
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if (!session_bus) glfw_dbus_connect_to_session_bus();
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return session_bus;
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}
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