/**
* Send a D-Bus reply.
*
* @param ps current session
* @param srcmsg original message
* @param func a function that modifies the built message, to, for example,
* add an argument
* @param data data pointer to pass to the function
*/
static bool
cdbus_reply(session_t *ps, DBusMessage *srcmsg,
bool (*func)(session_t *ps, DBusMessage *msg, const void *data),
const void *data) {
DBusMessage* msg = NULL;
// Create a reply
msg = dbus_message_new_method_return(srcmsg);
if (!msg) {
printf_errf("(): Failed to create D-Bus reply.");
return false;
}
// Append arguments onto message
if (func && !func(ps, msg, data)) {
dbus_message_unref(msg);
return false;
}
// Send the message and flush the connection
if (!dbus_connection_send(ps->dbus_conn, msg, NULL)) {
printf_errf("(): Failed to send D-Bus reply.");
dbus_message_unref(msg);
return false;
}
dbus_connection_flush(ps->dbus_conn);
// Free the message
dbus_message_unref(msg);
return true;
}
/**
* Get n-th argument of a D-Bus message.
*
* @param count the position of the argument to get, starting from 0
* @param type libdbus type number of the type
* @param pdest pointer to the target
* @return true if successful, false otherwise.
*/
static bool
cdbus_msg_get_arg(DBusMessage *msg, int count, const int type, void *pdest) {
assert(count >= 0);
DBusMessageIter iter = { };
if (!dbus_message_iter_init(msg, &iter)) {
printf_errf("(): Message has no argument.");
return false;
}
{
const int oldcount = count;
while (count) {
if (!dbus_message_iter_next(&iter)) {
printf_errf("(): Failed to find argument %d.", oldcount);
return false;
}
--count;
}
}
if (type != dbus_message_iter_get_arg_type(&iter)) {
printf_errf("(): Argument has incorrect type.");
return false;
}
dbus_message_iter_get_basic(&iter, pdest);
return true;
}
/**
* Send a D-Bus signal.
*
* @param ps current session
* @param name signal name
* @param func a function that modifies the built message, to, for example,
* add an argument
* @param data data pointer to pass to the function
*/
static bool
cdbus_signal(session_t *ps, const char *name,
bool (*func)(session_t *ps, DBusMessage *msg, const void *data),
const void *data) {
DBusMessage* msg = NULL;
// Create a signal
msg = dbus_message_new_signal(CDBUS_OBJECT_NAME, CDBUS_INTERFACE_NAME,
name);
if (!msg) {
printf_errf("(): Failed to create D-Bus signal.");
return false;
}
// Append arguments onto message
if (func && !func(ps, msg, data)) {
dbus_message_unref(msg);
return false;
}
// Send the message and flush the connection
if (!dbus_connection_send(ps->dbus_conn, msg, NULL)) {
printf_errf("(): Failed to send D-Bus signal.");
dbus_message_unref(msg);
return false;
}
dbus_connection_flush(ps->dbus_conn);
// Free the message
dbus_message_unref(msg);
return true;
}
/**
* Process a find_win D-Bus request.
*/
static bool
cdbus_process_find_win(session_t *ps, DBusMessage *msg) {
const char *target = NULL;
if (!cdbus_msg_get_arg(msg, 0, DBUS_TYPE_STRING, &target))
return false;
Window wid = None;
// Find window by client window
if (!strcmp("client", target)) {
cdbus_window_t client = None;
if (!cdbus_msg_get_arg(msg, 1, CDBUS_TYPE_WINDOW, &client))
return false;
win *w = find_toplevel(ps, client);
if (w)
wid = w->id;
}
// Find focused window
else if (!strcmp("focused", target)) {
win *w = find_focused(ps);
if (w)
wid = w->id;
}
else {
printf_errf("(): " CDBUS_ERROR_BADTGT_S, target);
cdbus_reply_err(ps, msg, CDBUS_ERROR_BADTGT, CDBUS_ERROR_BADTGT_S, target);
return true;
}
cdbus_reply_wid(ps, msg, wid);
return true;
}
/**
* Callback to append a double argument to a message.
*/
static bool
cdbus_apdarg_double(session_t *ps, DBusMessage *msg, const void *data) {
if (!dbus_message_append_args(msg, DBUS_TYPE_DOUBLE, data,
DBUS_TYPE_INVALID)) {
printf_errf("(): Failed to append argument.");
return false;
}
return true;
}
/**
* Send a D-Bus error reply.
*
* @param ps current session
* @param msg the new error DBusMessage
*/
static bool
cdbus_reply_errm(session_t *ps, DBusMessage *msg) {
if (!msg) {
printf_errf("(): Failed to create D-Bus reply.");
return false;
}
// Send the message and flush the connection
if (!dbus_connection_send(ps->dbus_conn, msg, NULL)) {
printf_errf("(): Failed to send D-Bus reply.");
dbus_message_unref(msg);
return false;
}
dbus_connection_flush(ps->dbus_conn);
// Free the message
dbus_message_unref(msg);
return true;
}
/**
* Callback to append an cdbus_enum_t argument to a message.
*/
static bool
cdbus_apdarg_enum(session_t *ps, DBusMessage *msg, const void *data) {
assert(data);
if (!dbus_message_append_args(msg, CDBUS_TYPE_ENUM, data,
DBUS_TYPE_INVALID)) {
printf_errf("(): Failed to append argument.");
return false;
}
return true;
}
/**
* Callback to append all window IDs to a message.
*/
static bool
cdbus_apdarg_wids(session_t *ps, DBusMessage *msg, const void *data) {
// Get the number of wids we are to include
unsigned count = 0;
for (win *w = ps->list; w; w = w->next) {
if (!w->destroyed)
++count;
}
// Allocate memory for an array of window IDs
cdbus_window_t *arr = malloc(sizeof(cdbus_window_t) * count);
if (!arr) {
printf_errf("(): Failed to allocate memory for window ID array.");
return false;
}
// Build the array
{
cdbus_window_t *pcur = arr;
for (win *w = ps->list; w; w = w->next) {
if (!w->destroyed) {
*pcur = w->id;
++pcur;
assert(pcur <= arr + count);
}
}
assert(pcur == arr + count);
}
// Append arguments
if (!dbus_message_append_args(msg, DBUS_TYPE_ARRAY, CDBUS_TYPE_WINDOW,
&arr, count, DBUS_TYPE_INVALID)) {
printf_errf("(): Failed to append argument.");
free(arr);
return false;
}
free(arr);
return true;
}
/**
* Callback to append a Window argument to a message.
*/
static bool
cdbus_apdarg_wid(session_t *ps, DBusMessage *msg, const void *data) {
assert(data);
cdbus_window_t val = *(const Window *)data;
if (!dbus_message_append_args(msg, CDBUS_TYPE_WINDOW, &val,
DBUS_TYPE_INVALID)) {
printf_errf("(): Failed to append argument.");
return false;
}
return true;
}
/**
* Callback to append a bool argument to a message.
*/
static bool
cdbus_apdarg_bool(session_t *ps, DBusMessage *msg, const void *data) {
assert(data);
dbus_bool_t val = *(const bool *) data;
if (!dbus_message_append_args(msg, DBUS_TYPE_BOOLEAN, &val,
DBUS_TYPE_INVALID)) {
printf_errf("(): Failed to append argument.");
return false;
}
return true;
}
/**
* Callback to append a string argument to a message.
*/
static bool
cdbus_apdarg_string(session_t *ps, DBusMessage *msg, const void *data) {
const char *str = data;
if (!str)
str = "";
if (!dbus_message_append_args(msg, DBUS_TYPE_STRING, &str,
DBUS_TYPE_INVALID)) {
printf_errf("(): Failed to append argument.");
return false;
}
return true;
}
/**
* @brief Create all ancestor directories of given path.
*
* @param path input path
*
* @return true if successful, false otherwise
*/
bool path_create_ancestors(char *path) {
char *p = path;
char *pprev = NULL;
while ((pprev = p), (p = strchr(p, '/'))) {
++p;
// Ignore if the segment is empty
if ((p - pprev) <= 1)
continue;
char c = *p;
*p = '\0';
if (mkdir(path, S_IRWXU | S_IRWXG | S_IRWXO) && EEXIST != errno) {
printf_errf("(): Failed to create directory %s: %d (%s)", path, errno,
dumpstr_errno());
return false;
}
*p = c;
}
return true;
}
/**
* Destroy D-Bus connection.
*/
void
cdbus_destroy(session_t *ps) {
if (ps->dbus_conn) {
// Release DBus name firstly
if (ps->dbus_service) {
DBusError err = { };
dbus_error_init(&err);
dbus_bus_release_name(ps->dbus_conn, ps->dbus_service, &err);
if (dbus_error_is_set(&err)) {
printf_errf("(): Failed to release DBus name (%s).",
err.message);
dbus_error_free(&err);
}
}
// Close and unref the connection
dbus_connection_close(ps->dbus_conn);
dbus_connection_unref(ps->dbus_conn);
}
}
/**
* Process a opts_set D-Bus request.
*/
static bool
cdbus_process_opts_set(session_t *ps, DBusMessage *msg) {
const char *target = NULL;
if (!cdbus_msg_get_arg(msg, 0, DBUS_TYPE_STRING, &target))
return false;
#define cdbus_m_opts_set_do(tgt, type, real_type) \
if (!strcmp(MSTR(tgt), target)) { \
real_type val; \
if (!cdbus_msg_get_arg(msg, 1, type, &val)) \
return false; \
ps->o.tgt = val; \
goto cdbus_process_opts_set_success; \
}
// unredir_if_possible
if (!strcmp("unredir_if_possible", target)) {
dbus_bool_t val = FALSE;
if (!cdbus_msg_get_arg(msg, 1, DBUS_TYPE_BOOLEAN, &val))
return false;
if (ps->o.unredir_if_possible != val) {
ps->o.unredir_if_possible = val;
ps->ev_received = true;
}
goto cdbus_process_opts_set_success;
}
// track_focus
if (!strcmp("track_focus", target)) {
dbus_bool_t val = FALSE;
if (!cdbus_msg_get_arg(msg, 1, DBUS_TYPE_BOOLEAN, &val))
return false;
// You could enable this option, but never turn if off
if (val) {
opts_init_track_focus(ps);
}
goto cdbus_process_opts_set_success;
}
// vsync
if (!strcmp("vsync", target)) {
const char * val = NULL;
if (!cdbus_msg_get_arg(msg, 1, DBUS_TYPE_STRING, &val))
return false;
if (!parse_vsync(ps, val)) {
printf_errf("(): " CDBUS_ERROR_BADARG_S, 1, "Value invalid.");
cdbus_reply_err(ps, msg, CDBUS_ERROR_BADARG, CDBUS_ERROR_BADARG_S, 1, "Value invalid.");
}
else if (!vsync_init(ps)) {
printf_errf("(): " CDBUS_ERROR_CUSTOM_S, "Failed to initialize specified VSync method.");
cdbus_reply_err(ps, msg, CDBUS_ERROR_CUSTOM, CDBUS_ERROR_CUSTOM_S, "Failed to initialize specified VSync method.");
}
else
goto cdbus_process_opts_set_success;
return true;
}
#undef cdbus_m_opts_set_do
printf_errf("(): " CDBUS_ERROR_BADTGT_S, target);
cdbus_reply_err(ps, msg, CDBUS_ERROR_BADTGT, CDBUS_ERROR_BADTGT_S, target);
return true;
cdbus_process_opts_set_success:
if (!dbus_message_get_no_reply(msg))
cdbus_reply_bool(ps, msg, true);
return true;
}
/**
* Process a opts_get D-Bus request.
*/
static bool
cdbus_process_opts_get(session_t *ps, DBusMessage *msg) {
const char *target = NULL;
if (!cdbus_msg_get_arg(msg, 0, DBUS_TYPE_STRING, &target))
return false;
#define cdbus_m_opts_get_do(tgt, apdarg_func) \
if (!strcmp(MSTR(tgt), target)) { \
apdarg_func(ps, msg, ps->o.tgt); \
return true; \
}
// display
if (!strcmp("display", target)) {
cdbus_reply_string(ps, msg, DisplayString(ps->dpy));
return true;
}
cdbus_m_opts_get_do(config_file, cdbus_reply_string);
cdbus_m_opts_get_do(mark_wmwin_focused, cdbus_reply_bool);
cdbus_m_opts_get_do(mark_ovredir_focused, cdbus_reply_bool);
cdbus_m_opts_get_do(fork_after_register, cdbus_reply_bool);
cdbus_m_opts_get_do(detect_rounded_corners, cdbus_reply_bool);
cdbus_m_opts_get_do(paint_on_overlay, cdbus_reply_bool);
cdbus_m_opts_get_do(unredir_if_possible, cdbus_reply_bool);
cdbus_m_opts_get_do(logpath, cdbus_reply_string);
cdbus_m_opts_get_do(synchronize, cdbus_reply_bool);
cdbus_m_opts_get_do(refresh_rate, cdbus_reply_int32);
cdbus_m_opts_get_do(sw_opti, cdbus_reply_bool);
if (!strcmp("vsync", target)) {
assert(ps->o.vsync < sizeof(VSYNC_STRS) / sizeof(VSYNC_STRS[0]));
cdbus_reply_string(ps, msg, VSYNC_STRS[ps->o.vsync]);
return true;
}
if (!strcmp("backend", target)) {
assert(ps->o.backend < sizeof(BACKEND_STRS) / sizeof(BACKEND_STRS[0]));
cdbus_reply_string(ps, msg, BACKEND_STRS[ps->o.backend]);
return true;
}
cdbus_m_opts_get_do(dbe, cdbus_reply_bool);
cdbus_m_opts_get_do(vsync_aggressive, cdbus_reply_bool);
cdbus_m_opts_get_do(blur_background, cdbus_reply_bool);
cdbus_m_opts_get_do(blur_background_frame, cdbus_reply_bool);
cdbus_m_opts_get_do(blur_background_fixed, cdbus_reply_bool);
cdbus_m_opts_get_do(inactive_dim, cdbus_reply_double);
cdbus_m_opts_get_do(inactive_dim_fixed, cdbus_reply_bool);
cdbus_m_opts_get_do(use_ewmh_active_win, cdbus_reply_bool);
cdbus_m_opts_get_do(detect_transient, cdbus_reply_bool);
cdbus_m_opts_get_do(detect_client_leader, cdbus_reply_bool);
#ifdef CONFIG_VSYNC_OPENGL
cdbus_m_opts_get_do(glx_no_stencil, cdbus_reply_bool);
cdbus_m_opts_get_do(glx_copy_from_front, cdbus_reply_bool);
cdbus_m_opts_get_do(glx_use_copysubbuffermesa, cdbus_reply_bool);
cdbus_m_opts_get_do(glx_no_rebind_pixmap, cdbus_reply_bool);
cdbus_m_opts_get_do(glx_swap_method, cdbus_reply_int32);
#endif
cdbus_m_opts_get_do(track_focus, cdbus_reply_bool);
cdbus_m_opts_get_do(track_wdata, cdbus_reply_bool);
cdbus_m_opts_get_do(track_leader, cdbus_reply_bool);
#undef cdbus_m_opts_get_do
printf_errf("(): " CDBUS_ERROR_BADTGT_S, target);
cdbus_reply_err(ps, msg, CDBUS_ERROR_BADTGT, CDBUS_ERROR_BADTGT_S, target);
return true;
}
/**
* Process a opts_set D-Bus request.
*/
static bool
cdbus_process_opts_set(session_t *ps, DBusMessage *msg) {
const char *target = NULL;
if (!cdbus_msg_get_arg(msg, 0, DBUS_TYPE_STRING, &target))
return false;
#define cdbus_m_opts_set_do(tgt, type, real_type) \
if (!strcmp(MSTR(tgt), target)) { \
real_type val; \
if (!cdbus_msg_get_arg(msg, 1, type, &val)) \
return false; \
ps->o.tgt = val; \
goto cdbus_process_opts_set_success; \
}
// fade_delta
if (!strcmp("fade_delta", target)) {
int32_t val = 0.0;
if (!cdbus_msg_get_arg(msg, 1, DBUS_TYPE_INT32, &val))
return false;
ps->o.fade_delta = max_i(val, 1);
goto cdbus_process_opts_set_success;
}
// fade_in_step
if (!strcmp("fade_in_step", target)) {
double val = 0.0;
if (!cdbus_msg_get_arg(msg, 1, DBUS_TYPE_DOUBLE, &val))
return false;
ps->o.fade_in_step = normalize_d(val) * OPAQUE;
goto cdbus_process_opts_set_success;
}
// fade_out_step
if (!strcmp("fade_out_step", target)) {
double val = 0.0;
if (!cdbus_msg_get_arg(msg, 1, DBUS_TYPE_DOUBLE, &val))
return false;
ps->o.fade_out_step = normalize_d(val) * OPAQUE;
goto cdbus_process_opts_set_success;
}
// no_fading_openclose
if (!strcmp("no_fading_openclose", target)) {
dbus_bool_t val = FALSE;
if (!cdbus_msg_get_arg(msg, 1, DBUS_TYPE_BOOLEAN, &val))
return false;
opts_set_no_fading_openclose(ps, val);
goto cdbus_process_opts_set_success;
}
// unredir_if_possible
if (!strcmp("unredir_if_possible", target)) {
dbus_bool_t val = FALSE;
if (!cdbus_msg_get_arg(msg, 1, DBUS_TYPE_BOOLEAN, &val))
return false;
if (ps->o.unredir_if_possible != val) {
ps->o.unredir_if_possible = val;
ps->ev_received = true;
}
goto cdbus_process_opts_set_success;
}
// clear_shadow
if (!strcmp("clear_shadow", target)) {
dbus_bool_t val = FALSE;
if (!cdbus_msg_get_arg(msg, 1, DBUS_TYPE_BOOLEAN, &val))
return false;
if (ps->o.clear_shadow != val) {
ps->o.clear_shadow = val;
force_repaint(ps);
}
goto cdbus_process_opts_set_success;
}
// track_focus
if (!strcmp("track_focus", target)) {
dbus_bool_t val = FALSE;
if (!cdbus_msg_get_arg(msg, 1, DBUS_TYPE_BOOLEAN, &val))
return false;
// You could enable this option, but never turn if off
if (val) {
opts_init_track_focus(ps);
}
goto cdbus_process_opts_set_success;
}
// vsync
if (!strcmp("vsync", target)) {
const char * val = NULL;
if (!cdbus_msg_get_arg(msg, 1, DBUS_TYPE_STRING, &val))
return false;
vsync_deinit(ps);
if (!parse_vsync(ps, val)) {
printf_errf("(): " CDBUS_ERROR_BADARG_S, 1, "Value invalid.");
cdbus_reply_err(ps, msg, CDBUS_ERROR_BADARG, CDBUS_ERROR_BADARG_S, 1, "Value invalid.");
}
else if (!vsync_init(ps)) {
printf_errf("(): " CDBUS_ERROR_CUSTOM_S, "Failed to initialize specified VSync method.");
cdbus_reply_err(ps, msg, CDBUS_ERROR_CUSTOM, CDBUS_ERROR_CUSTOM_S, "Failed to initialize specified VSync method.");
}
else
goto cdbus_process_opts_set_success;
return true;
}
// redirected_force
if (!strcmp("redirected_force", target)) {
cdbus_enum_t val = UNSET;
if (!cdbus_msg_get_arg(msg, 1, CDBUS_TYPE_ENUM, &val))
return false;
ps->o.redirected_force = val;
force_repaint(ps);
goto cdbus_process_opts_set_success;
}
// stoppaint_force
cdbus_m_opts_set_do(stoppaint_force, CDBUS_TYPE_ENUM, cdbus_enum_t);
#undef cdbus_m_opts_set_do
printf_errf("(): " CDBUS_ERROR_BADTGT_S, target);
cdbus_reply_err(ps, msg, CDBUS_ERROR_BADTGT, CDBUS_ERROR_BADTGT_S, target);
return true;
cdbus_process_opts_set_success:
if (!dbus_message_get_no_reply(msg))
cdbus_reply_bool(ps, msg, true);
return true;
}
/**
* Process a win_set D-Bus request.
*/
static bool
cdbus_process_win_set(session_t *ps, DBusMessage *msg) {
cdbus_window_t wid = None;
const char *target = NULL;
DBusError err = { };
if (!dbus_message_get_args(msg, &err,
CDBUS_TYPE_WINDOW, &wid,
DBUS_TYPE_STRING, &target,
DBUS_TYPE_INVALID)) {
printf_errf("(): Failed to parse argument of \"win_set\" (%s).",
err.message);
dbus_error_free(&err);
return false;
}
win *w = find_win(ps, wid);
if (!w) {
printf_errf("(): Window %#010x not found.", wid);
cdbus_reply_err(ps, msg, CDBUS_ERROR_BADWIN, CDBUS_ERROR_BADWIN_S, wid);
return true;
}
ps->ev_received = true;
#define cdbus_m_win_set_do(tgt, type, real_type) \
if (!strcmp(MSTR(tgt), target)) { \
real_type val; \
if (!cdbus_msg_get_arg(msg, 2, type, &val)) \
return false; \
w->tgt = val; \
goto cdbus_process_win_set_success; \
}
if (!strcmp("focused_force", target)) {
cdbus_enum_t val = UNSET;
if (!cdbus_msg_get_arg(msg, 2, CDBUS_TYPE_ENUM, &val))
return false;
win_set_focused_force(ps, w, val);
goto cdbus_process_win_set_success;
}
if (!strcmp("invert_color_force", target)) {
cdbus_enum_t val = UNSET;
if (!cdbus_msg_get_arg(msg, 2, CDBUS_TYPE_ENUM, &val))
return false;
win_set_invert_color_force(ps, w, val);
goto cdbus_process_win_set_success;
}
#undef cdbus_m_win_set_do
printf_errf("(): " CDBUS_ERROR_BADTGT_S, target);
cdbus_reply_err(ps, msg, CDBUS_ERROR_BADTGT, CDBUS_ERROR_BADTGT_S, target);
return true;
cdbus_process_win_set_success:
if (!dbus_message_get_no_reply(msg))
cdbus_reply_bool(ps, msg, true);
return true;
}
/**
* Process a win_get D-Bus request.
*/
static bool
cdbus_process_win_get(session_t *ps, DBusMessage *msg) {
cdbus_window_t wid = None;
const char *target = NULL;
DBusError err = { };
if (!dbus_message_get_args(msg, &err,
CDBUS_TYPE_WINDOW, &wid,
DBUS_TYPE_STRING, &target,
DBUS_TYPE_INVALID)) {
printf_errf("(): Failed to parse argument of \"win_get\" (%s).",
err.message);
dbus_error_free(&err);
return false;
}
win *w = find_win(ps, wid);
if (!w) {
printf_errf("(): Window %#010x not found.", wid);
cdbus_reply_err(ps, msg, CDBUS_ERROR_BADWIN, CDBUS_ERROR_BADWIN_S, wid);
return true;
}
#define cdbus_m_win_get_do(tgt, apdarg_func) \
if (!strcmp(MSTR(tgt), target)) { \
apdarg_func(ps, msg, w->tgt); \
return true; \
}
cdbus_m_win_get_do(id, cdbus_reply_wid);
// next
if (!strcmp("next", target)) {
cdbus_reply_wid(ps, msg, (w->next ? w->next->id: 0));
return true;
}
// map_state
if (!strcmp("map_state", target)) {
cdbus_reply_bool(ps, msg, w->a.map_state);
return true;
}
cdbus_m_win_get_do(mode, cdbus_reply_enum);
cdbus_m_win_get_do(client_win, cdbus_reply_wid);
cdbus_m_win_get_do(damaged, cdbus_reply_bool);
cdbus_m_win_get_do(destroyed, cdbus_reply_bool);
cdbus_m_win_get_do(window_type, cdbus_reply_enum);
cdbus_m_win_get_do(wmwin, cdbus_reply_bool);
cdbus_m_win_get_do(leader, cdbus_reply_wid);
cdbus_m_win_get_do(focused_real, cdbus_reply_bool);
cdbus_m_win_get_do(focused_force, cdbus_reply_enum);
cdbus_m_win_get_do(invert_color_force, cdbus_reply_enum);
cdbus_m_win_get_do(name, cdbus_reply_string);
cdbus_m_win_get_do(class_instance, cdbus_reply_string);
cdbus_m_win_get_do(class_general, cdbus_reply_string);
cdbus_m_win_get_do(role, cdbus_reply_string);
cdbus_m_win_get_do(opacity, cdbus_reply_uint32);
cdbus_m_win_get_do(frame_opacity, cdbus_reply_double);
cdbus_m_win_get_do(left_width, cdbus_reply_uint32);
cdbus_m_win_get_do(right_width, cdbus_reply_uint32);
cdbus_m_win_get_do(top_width, cdbus_reply_uint32);
cdbus_m_win_get_do(bottom_width, cdbus_reply_uint32);
cdbus_m_win_get_do(fade, cdbus_reply_bool);
cdbus_m_win_get_do(invert_color, cdbus_reply_bool);
cdbus_m_win_get_do(blur_background, cdbus_reply_bool);
#undef cdbus_m_win_get_do
printf_errf("(): " CDBUS_ERROR_BADTGT_S, target);
cdbus_reply_err(ps, msg, CDBUS_ERROR_BADTGT, CDBUS_ERROR_BADTGT_S, target);
return true;
}
/**
* Process a message from D-Bus.
*/
static void
cdbus_process(session_t *ps, DBusMessage *msg) {
bool success = false;
#define cdbus_m_ismethod(method) \
dbus_message_is_method_call(msg, CDBUS_INTERFACE_NAME, method)
if (cdbus_m_ismethod("reset")) {
ps->reset = true;
if (!dbus_message_get_no_reply(msg))
cdbus_reply_bool(ps, msg, true);
success = true;
}
else if (cdbus_m_ismethod("list_win")) {
success = cdbus_process_list_win(ps, msg);
}
else if (cdbus_m_ismethod("win_get")) {
success = cdbus_process_win_get(ps, msg);
}
else if (cdbus_m_ismethod("win_set")) {
success = cdbus_process_win_set(ps, msg);
}
else if (cdbus_m_ismethod("find_win")) {
success = cdbus_process_find_win(ps, msg);
}
else if (cdbus_m_ismethod("opts_get")) {
success = cdbus_process_opts_get(ps, msg);
}
else if (cdbus_m_ismethod("opts_set")) {
success = cdbus_process_opts_set(ps, msg);
}
#undef cdbus_m_ismethod
else if (dbus_message_is_method_call(msg,
"org.freedesktop.DBus.Introspectable", "Introspect")) {
success = cdbus_process_introspect(ps, msg);
}
else if (dbus_message_is_signal(msg, "org.freedesktop.DBus", "NameAcquired")
|| dbus_message_is_signal(msg, "org.freedesktop.DBus", "NameLost")) {
success = true;
}
else {
if (DBUS_MESSAGE_TYPE_ERROR == dbus_message_get_type(msg)) {
printf_errf("(): Error message of path \"%s\" "
"interface \"%s\", member \"%s\", error \"%s\"",
dbus_message_get_path(msg), dbus_message_get_interface(msg),
dbus_message_get_member(msg), dbus_message_get_error_name(msg));
}
else {
printf_errf("(): Illegal message of type \"%s\", path \"%s\" "
"interface \"%s\", member \"%s\"",
cdbus_repr_msgtype(msg), dbus_message_get_path(msg),
dbus_message_get_interface(msg), dbus_message_get_member(msg));
}
if (DBUS_MESSAGE_TYPE_METHOD_CALL == dbus_message_get_type(msg)
&& !dbus_message_get_no_reply(msg))
cdbus_reply_err(ps, msg, CDBUS_ERROR_BADMSG, CDBUS_ERROR_BADMSG_S);
success = true;
}
// If the message could not be processed, and an reply is expected, return
// an empty reply.
if (!success && DBUS_MESSAGE_TYPE_METHOD_CALL == dbus_message_get_type(msg)
&& !dbus_message_get_no_reply(msg))
cdbus_reply_err(ps, msg, CDBUS_ERROR_UNKNOWN, CDBUS_ERROR_UNKNOWN_S);
// Free the message
dbus_message_unref(msg);
}
/**
* Initialize D-Bus connection.
*/
bool
cdbus_init(session_t *ps) {
DBusError err = { };
// Initialize
dbus_error_init(&err);
// Connect to D-Bus
// Use dbus_bus_get_private() so we can fully recycle it ourselves
ps->dbus_conn = dbus_bus_get_private(DBUS_BUS_SESSION, &err);
if (dbus_error_is_set(&err)) {
printf_errf("(): D-Bus connection failed (%s).", err.message);
dbus_error_free(&err);
return false;
}
if (!ps->dbus_conn) {
printf_errf("(): D-Bus connection failed for unknown reason.");
return false;
}
// Avoid exiting on disconnect
dbus_connection_set_exit_on_disconnect(ps->dbus_conn, false);
// Request service name
{
// Get display name
char *display = DisplayString(ps->dpy);
if (!display)
display = "unknown";
display = mstrcpy(display);
// Convert all special characters in display name to underscore
{
char *pdisp = display;
while (*pdisp) {
if (!isalnum(*pdisp))
*pdisp = '_';
++pdisp;
}
}
// Build service name
char *service = mstrjoin3(CDBUS_SERVICE_NAME, ".", display);
ps->dbus_service = service;
free(display);
display = NULL;
// Request for the name
int ret = dbus_bus_request_name(ps->dbus_conn, service,
DBUS_NAME_FLAG_DO_NOT_QUEUE, &err);
if (dbus_error_is_set(&err)) {
printf_errf("(): Failed to obtain D-Bus name (%s).", err.message);
dbus_error_free(&err);
}
if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER != ret
&& DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER != ret) {
printf_errf("(): Failed to become the primary owner of requested "
"D-Bus name (%d).", ret);
}
}
// Add watch handlers
if (!dbus_connection_set_watch_functions(ps->dbus_conn,
cdbus_callback_add_watch, cdbus_callback_remove_watch,
cdbus_callback_watch_toggled, ps, NULL)) {
printf_errf("(): Failed to add D-Bus watch functions.");
return false;
}
// Add timeout handlers
if (!dbus_connection_set_timeout_functions(ps->dbus_conn,
cdbus_callback_add_timeout, cdbus_callback_remove_timeout,
cdbus_callback_timeout_toggled, ps, NULL)) {
printf_errf("(): Failed to add D-Bus timeout functions.");
return false;
}
// Add match
dbus_bus_add_match(ps->dbus_conn,
"type='method_call',interface='" CDBUS_INTERFACE_NAME "'", &err);
if (dbus_error_is_set(&err)) {
printf_errf("(): Failed to add D-Bus match.");
dbus_error_free(&err);
return false;
}
return true;
}
/**
* Parse the target part of a rule.
*/
static int
c2_parse_target(session_t *ps, const char *pattern, int offset, c2_ptr_t *presult) {
// Initialize leaf
presult->isbranch = false;
presult->l = malloc(sizeof(c2_l_t));
if (!presult->l)
c2_error("Failed to allocate memory for new leaf.");
c2_l_t * const pleaf = presult->l;
memcpy(pleaf, &leaf_def, sizeof(c2_l_t));
// Parse negation marks
while ('!' == pattern[offset]) {
pleaf->neg = !pleaf->neg;
++offset;
C2H_SKIP_SPACES();
}
// Copy target name out
unsigned tgtlen = 0;
for (; pattern[offset]
&& (isalnum(pattern[offset]) || '_' == pattern[offset]); ++offset) {
++tgtlen;
}
if (!tgtlen)
c2_error("Empty target.");
pleaf->tgt = mstrncpy(&pattern[offset - tgtlen], tgtlen);
// Check for predefined targets
for (unsigned i = 1; i < sizeof(C2_PREDEFS) / sizeof(C2_PREDEFS[0]); ++i) {
if (!strcmp(C2_PREDEFS[i].name, pleaf->tgt)) {
pleaf->predef = i;
pleaf->type = C2_PREDEFS[i].type;
pleaf->format = C2_PREDEFS[i].format;
break;
}
}
// Alias for predefined targets
if (!pleaf->predef) {
#define TGTFILL(pdefid) \
(pleaf->predef = pdefid, \
pleaf->type = C2_PREDEFS[pdefid].type, \
pleaf->format = C2_PREDEFS[pdefid].format)
// if (!strcmp("WM_NAME", tgt) || !strcmp("_NET_WM_NAME", tgt))
// TGTFILL(C2_L_PNAME);
#undef TGTFILL
// Alias for custom properties
#define TGTFILL(target, type, format) \
(pleaf->target = mstrcpy(target), \
pleaf->type = type, \
pleaf->format = format)
// if (!strcmp("SOME_ALIAS"))
// TGTFILL("ALIAS_TEXT", C2_L_TSTRING, 32);
#undef TGTFILL
}
C2H_SKIP_SPACES();
// Parse target-on-frame flag
if ('@' == pattern[offset]) {
pleaf->tgt_onframe = true;
++offset;
C2H_SKIP_SPACES();
}
// Parse index
if ('[' == pattern[offset]) {
offset++;
C2H_SKIP_SPACES();
int index = -1;
char *endptr = NULL;
index = strtol(pattern + offset, &endptr, 0);
if (!endptr || pattern + offset == endptr)
c2_error("No index number found after bracket.");
if (index < 0)
c2_error("Index number invalid.");
if (pleaf->predef)
c2_error("Predefined targets can't have index.");
pleaf->index = index;
offset = endptr - pattern;
C2H_SKIP_SPACES();
if (']' != pattern[offset])
c2_error("Index end marker not found.");
++offset;
C2H_SKIP_SPACES();
}
// Parse target type and format
if (':' == pattern[offset]) {
++offset;
C2H_SKIP_SPACES();
// Look for format
bool hasformat = false;
int format = 0;
{
char *endptr = NULL;
format = strtol(pattern + offset, &endptr, 0);
assert(endptr);
if ((hasformat = (endptr && endptr != pattern + offset)))
offset = endptr - pattern;
C2H_SKIP_SPACES();
}
// Look for type
enum c2_l_type type = C2_L_TUNDEFINED;
{
switch (pattern[offset]) {
case 'w': type = C2_L_TWINDOW; break;
case 'd': type = C2_L_TDRAWABLE; break;
case 'c': type = C2_L_TCARDINAL; break;
case 's': type = C2_L_TSTRING; break;
case 'a': type = C2_L_TATOM; break;
default: c2_error("Invalid type character.");
}
if (type) {
if (pleaf->predef) {
printf_errf("(): Warning: Type specified for a default target will be ignored.");
}
else {
if (pleaf->type && type != pleaf->type)
printf_errf("(): Warning: Default type overridden on target.");
pleaf->type = type;
}
}
offset++;
C2H_SKIP_SPACES();
}
// Default format
if (!pleaf->format) {
switch (pleaf->type) {
case C2_L_TWINDOW:
case C2_L_TDRAWABLE:
case C2_L_TATOM:
pleaf->format = 32; break;
case C2_L_TSTRING:
pleaf->format = 8; break;
default:
break;
}
}
// Write format
if (hasformat) {
if (pleaf->predef)
printf_errf("(): Warning: Format \"%d\" specified on a default target will be ignored.", format);
else if (C2_L_TSTRING == pleaf->type)
printf_errf("(): Warning: Format \"%d\" specified on a string target will be ignored.", format);
else {
if (pleaf->format && pleaf->format != format)
printf_err("Warning: Default format %d overridden on target.",
pleaf->format);
pleaf->format = format;
}
}
}
if (!pleaf->type)
c2_error("Target type cannot be determined.");
// if (!pleaf->predef && !pleaf->format && C2_L_TSTRING != pleaf->type)
// c2_error("Target format cannot be determined.");
if (pleaf->format && 8 != pleaf->format
&& 16 != pleaf->format && 32 != pleaf->format)
c2_error("Invalid format.");
return offset;
}
/**
* Do postprocessing on a condition leaf.
*/
static bool
c2_l_postprocess(session_t *ps, c2_l_t *pleaf) {
// Give a pattern type to a leaf with exists operator, if needed
if (C2_L_OEXISTS == pleaf->op && !pleaf->ptntype) {
pleaf->ptntype =
(C2_L_TSTRING == pleaf->type ? C2_L_PTSTRING: C2_L_PTINT);
}
// Get target atom if it's not a predefined one
if (!pleaf->predef) {
pleaf->tgtatom = get_atom(ps, pleaf->tgt);
if (!pleaf->tgtatom)
c2_error("Failed to get atom for target \"%s\".", pleaf->tgt);
}
// Insert target Atom into atom track list
if (pleaf->tgtatom) {
bool found = false;
for (latom_t *platom = ps->track_atom_lst; platom;
platom = platom->next) {
if (pleaf->tgtatom == platom->atom) {
found = true;
break;
}
}
if (!found) {
latom_t *pnew = malloc(sizeof(latom_t));
if (!pnew)
printf_errfq(1, "(): Failed to allocate memory for new track atom.");
pnew->next = ps->track_atom_lst;
pnew->atom = pleaf->tgtatom;
ps->track_atom_lst = pnew;
}
}
// Enable specific tracking options in compton if needed by the condition
// TODO: Add track_leader
if (pleaf->predef) {
switch (pleaf->predef) {
case C2_L_PFOCUSED: ps->o.track_focus = true; break;
case C2_L_PNAME:
case C2_L_PCLASSG:
case C2_L_PCLASSI:
case C2_L_PROLE: ps->o.track_wdata = true; break;
default: break;
}
}
// Warn about lower case characters in target name
if (!pleaf->predef) {
for (const char *pc = pleaf->tgt; *pc; ++pc) {
if (islower(*pc)) {
printf_errf("(): Warning: Lowercase character in target name \"%s\".", pleaf->tgt);
break;
}
}
}
// PCRE patterns
if (C2_L_PTSTRING == pleaf->ptntype && C2_L_MPCRE == pleaf->match) {
#ifdef CONFIG_REGEX_PCRE
const char *error = NULL;
int erroffset = 0;
int options = 0;
// Ignore case flag
if (pleaf->match_ignorecase)
options |= PCRE_CASELESS;
// Compile PCRE expression
pleaf->regex_pcre = pcre_compile(pleaf->ptnstr, options,
&error, &erroffset, NULL);
if (!pleaf->regex_pcre)
c2_error("Pattern \"%s\": PCRE regular expression parsing failed on "
"offset %d: %s", pleaf->ptnstr, erroffset, error);
#ifdef CONFIG_REGEX_PCRE_JIT
pleaf->regex_pcre_extra = pcre_study(pleaf->regex_pcre,
PCRE_STUDY_JIT_COMPILE, &error);
if (!pleaf->regex_pcre_extra) {
printf("Pattern \"%s\": PCRE regular expression study failed: %s",
pleaf->ptnstr, error);
}
#endif
// Free the target string
// free(pleaf->tgt);
// pleaf->tgt = NULL;
#else
c2_error("PCRE regular expression support not compiled in.");
#endif
}
return true;
}
/**
* Process a opts_get D-Bus request.
*/
static bool
cdbus_process_opts_get(session_t *ps, DBusMessage *msg) {
const char *target = NULL;
if (!cdbus_msg_get_arg(msg, 0, DBUS_TYPE_STRING, &target))
return false;
#define cdbus_m_opts_get_do(tgt, apdarg_func) \
if (!strcmp(MSTR(tgt), target)) { \
apdarg_func(ps, msg, ps->o.tgt); \
return true; \
}
// display
if (!strcmp("display", target)) {
cdbus_reply_string(ps, msg, DisplayString(ps->dpy));
return true;
}
cdbus_m_opts_get_do(config_file, cdbus_reply_string);
cdbus_m_opts_get_do(mark_wmwin_focused, cdbus_reply_bool);
cdbus_m_opts_get_do(mark_ovredir_focused, cdbus_reply_bool);
cdbus_m_opts_get_do(fork_after_register, cdbus_reply_bool);
cdbus_m_opts_get_do(detect_rounded_corners, cdbus_reply_bool);
cdbus_m_opts_get_do(paint_on_overlay, cdbus_reply_bool);
cdbus_m_opts_get_do(unredir_if_possible, cdbus_reply_bool);
cdbus_m_opts_get_do(logpath, cdbus_reply_string);
cdbus_m_opts_get_do(synchronize, cdbus_reply_bool);
cdbus_m_opts_get_do(refresh_rate, cdbus_reply_int32);
cdbus_m_opts_get_do(sw_opti, cdbus_reply_bool);
if (!strcmp("vsync", target)) {
assert(ps->o.vsync < sizeof(VSYNC_STRS) / sizeof(VSYNC_STRS[0]));
cdbus_reply_string(ps, msg, VSYNC_STRS[ps->o.vsync]);
return true;
}
cdbus_m_opts_get_do(dbe, cdbus_reply_bool);
cdbus_m_opts_get_do(vsync_aggressive, cdbus_reply_bool);
cdbus_m_opts_get_do(shadow_red, cdbus_reply_double);
cdbus_m_opts_get_do(shadow_green, cdbus_reply_double);
cdbus_m_opts_get_do(shadow_blue, cdbus_reply_double);
cdbus_m_opts_get_do(shadow_radius, cdbus_reply_int32);
cdbus_m_opts_get_do(shadow_offset_x, cdbus_reply_int32);
cdbus_m_opts_get_do(shadow_offset_y, cdbus_reply_int32);
cdbus_m_opts_get_do(shadow_opacity, cdbus_reply_double);
cdbus_m_opts_get_do(clear_shadow, cdbus_reply_bool);
cdbus_m_opts_get_do(blur_background, cdbus_reply_bool);
cdbus_m_opts_get_do(blur_background_frame, cdbus_reply_bool);
cdbus_m_opts_get_do(blur_background_fixed, cdbus_reply_bool);
cdbus_m_opts_get_do(inactive_dim, cdbus_reply_double);
cdbus_m_opts_get_do(inactive_dim_fixed, cdbus_reply_bool);
cdbus_m_opts_get_do(use_ewmh_active_win, cdbus_reply_bool);
cdbus_m_opts_get_do(detect_transient, cdbus_reply_bool);
cdbus_m_opts_get_do(detect_client_leader, cdbus_reply_bool);
cdbus_m_opts_get_do(track_focus, cdbus_reply_bool);
cdbus_m_opts_get_do(track_wdata, cdbus_reply_bool);
cdbus_m_opts_get_do(track_leader, cdbus_reply_bool);
#undef cdbus_m_opts_get_do
printf_errf("(): " CDBUS_ERROR_BADTGT_S, target);
cdbus_reply_err(ps, msg, CDBUS_ERROR_BADTGT, CDBUS_ERROR_BADTGT_S, target);
return true;
}
