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#define _GNU_SOURCE
#include "platform/freedesktop/dbus.h"
#if YASL_HAS_DBUS
#include <dbus/dbus.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
/* The portal may need activation on first use; bound how long a query blocks. */
#define PORTAL_TIMEOUT_MS 1000
static DBusConnection *bus;
/* The session bus address, without libdbus's X11 autolaunch fallback. */
static char *session_address(void)
{
const char *env = getenv("DBUS_SESSION_BUS_ADDRESS");
if (env && *env) return strdup(env);
const char *run = getenv("XDG_RUNTIME_DIR");
if (!run || !*run) return NULL;
char path[4096];
struct stat st;
if (snprintf(path, sizeof(path), "%s/bus", run) >= (int)sizeof(path) ||
stat(path, &st) != 0 || !S_ISSOCK(st.st_mode))
return NULL;
char *escaped = dbus_address_escape_value(path);
if (!escaped) return NULL;
char *address = NULL;
if (asprintf(&address, "unix:path=%s", escaped) < 0) address = NULL;
dbus_free(escaped);
return address;
}
static DBusConnection *session_bus(void)
{
if (bus && dbus_connection_get_is_connected(bus)) return bus;
if (bus) {
dbus_connection_close(bus);
dbus_connection_unref(bus);
bus = NULL;
}
char *address = session_address();
if (!address) return NULL;
DBusError err;
dbus_error_init(&err);
DBusConnection *c = dbus_connection_open_private(address, &err);
free(address);
if (!c) {
dbus_error_free(&err);
return NULL;
}
dbus_connection_set_exit_on_disconnect(c, FALSE);
if (!dbus_bus_register(c, &err)) {
dbus_error_free(&err);
dbus_connection_close(c);
dbus_connection_unref(c);
return NULL;
}
bus = c;
return bus;
}
bool bus_notify(const char *app, const char *title, const char *body)
{
DBusConnection *c = session_bus();
if (!c) return false;
DBusMessage *msg = dbus_message_new_method_call("org.freedesktop.Notifications",
"/org/freedesktop/Notifications", "org.freedesktop.Notifications", "Notify");
if (!msg) return false;
const char *icon = "";
dbus_uint32_t replaces = 0;
dbus_int32_t expire = -1;
DBusMessageIter it, sub, entry, value;
dbus_message_iter_init_append(msg, &it);
bool ok = dbus_message_iter_append_basic(&it, DBUS_TYPE_STRING, &app) &&
dbus_message_iter_append_basic(&it, DBUS_TYPE_UINT32, &replaces) &&
dbus_message_iter_append_basic(&it, DBUS_TYPE_STRING, &icon) &&
dbus_message_iter_append_basic(&it, DBUS_TYPE_STRING, &title) &&
dbus_message_iter_append_basic(&it, DBUS_TYPE_STRING, &body);
/* No actions. */
ok = ok && dbus_message_iter_open_container(&it, DBUS_TYPE_ARRAY, "s", &sub) &&
dbus_message_iter_close_container(&it, &sub);
/* Hints: desktop-entry names the application's .desktop file. */
const char *hint = "desktop-entry";
ok = ok && dbus_message_iter_open_container(&it, DBUS_TYPE_ARRAY, "{sv}", &sub) &&
dbus_message_iter_open_container(&sub, DBUS_TYPE_DICT_ENTRY, NULL, &entry) &&
dbus_message_iter_append_basic(&entry, DBUS_TYPE_STRING, &hint) &&
dbus_message_iter_open_container(&entry, DBUS_TYPE_VARIANT, "s", &value) &&
dbus_message_iter_append_basic(&value, DBUS_TYPE_STRING, &app) &&
dbus_message_iter_close_container(&entry, &value) &&
dbus_message_iter_close_container(&sub, &entry) &&
dbus_message_iter_close_container(&it, &sub);
ok = ok && dbus_message_iter_append_basic(&it, DBUS_TYPE_INT32, &expire);
if (ok) {
dbus_message_set_no_reply(msg, TRUE);
ok = dbus_connection_send(c, msg, NULL);
if (ok) dbus_connection_flush(c);
}
dbus_message_unref(msg);
return ok;
}
/* Read an integer from it, unwrapping variants: Settings.Read nests one more. */
static bool iter_int(DBusMessageIter *it, int64_t *out)
{
DBusMessageIter inner[4];
int depth = 0;
while (dbus_message_iter_get_arg_type(it) == DBUS_TYPE_VARIANT && depth < 4) {
dbus_message_iter_recurse(it, &inner[depth]);
it = &inner[depth++];
}
DBusBasicValue v;
switch (dbus_message_iter_get_arg_type(it)) {
case DBUS_TYPE_STRING: {
dbus_message_iter_get_basic(it, &v);
char *end;
errno = 0;
long long n = strtoll(v.str, &end, 10);
if (errno || end == v.str || *end) return false;
*out = n;
return true;
}
case DBUS_TYPE_BYTE: dbus_message_iter_get_basic(it, &v); *out = v.byt; return true;
case DBUS_TYPE_BOOLEAN: dbus_message_iter_get_basic(it, &v); *out = v.bool_val; return true;
case DBUS_TYPE_INT16: dbus_message_iter_get_basic(it, &v); *out = v.i16; return true;
case DBUS_TYPE_UINT16: dbus_message_iter_get_basic(it, &v); *out = v.u16; return true;
case DBUS_TYPE_INT32: dbus_message_iter_get_basic(it, &v); *out = v.i32; return true;
case DBUS_TYPE_UINT32: dbus_message_iter_get_basic(it, &v); *out = v.u32; return true;
case DBUS_TYPE_INT64: dbus_message_iter_get_basic(it, &v); *out = v.i64; return true;
case DBUS_TYPE_UINT64:
dbus_message_iter_get_basic(it, &v);
if (v.u64 > INT64_MAX) return false;
*out = (int64_t)v.u64;
return true;
default: return false;
}
}
bool portal_read_int(const char *ns, const char *key, int64_t *out)
{
DBusConnection *c = session_bus();
if (!c) return false;
/* ReadOne is portal version 2; older portals only have Read. */
static const char *const methods[] = {"ReadOne", "Read"};
for (int i = 0; i < 2; i++) {
DBusMessage *msg = dbus_message_new_method_call("org.freedesktop.portal.Desktop",
"/org/freedesktop/portal/desktop", "org.freedesktop.portal.Settings", methods[i]);
if (!msg) return false;
if (!dbus_message_append_args(msg, DBUS_TYPE_STRING, &ns, DBUS_TYPE_STRING, &key,
DBUS_TYPE_INVALID)) {
dbus_message_unref(msg);
return false;
}
DBusError err;
dbus_error_init(&err);
DBusMessage *reply = dbus_connection_send_with_reply_and_block(c, msg,
PORTAL_TIMEOUT_MS, &err);
dbus_message_unref(msg);
if (!reply) {
bool retry = dbus_error_has_name(&err, DBUS_ERROR_UNKNOWN_METHOD);
dbus_error_free(&err);
if (retry) continue;
return false;
}
DBusMessageIter it;
bool ok = dbus_message_iter_init(reply, &it) && iter_int(&it, out);
dbus_message_unref(reply);
return ok;
}
return false;
}
#else
bool bus_notify(const char *app, const char *title, const char *body)
{
(void)app;
(void)title;
(void)body;
return false;
}
bool portal_read_int(const char *ns, const char *key, int64_t *out)
{
(void)ns;
(void)key;
(void)out;
return false;
}
#endif
int portal_double_click_ms(void)
{
/* kdeglobals holds only values the user changed, so a KDE answer is
* deliberate; the GNOME key can be a default from another portal backend. */
int64_t ms;
if (portal_read_int("org.kde.kdeglobals.KDE", "DoubleClickInterval", &ms) ||
portal_read_int("org.gnome.desktop.peripherals.mouse", "double-click", &ms))
return ms > 0 && ms <= INT32_MAX ? (int)ms : 0;
return 0;
}
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