1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 Copyright 2011 Lennart Poettering
4 Copyright 2013 Kay Sievers
12 #include <xkbcommon/xkbcommon.h>
18 #include "alloc-util.h"
19 #include "bus-error.h"
20 #include "bus-message.h"
23 #include "keymap-util.h"
24 #include "locale-util.h"
26 #include "path-util.h"
27 #include "selinux-util.h"
28 #include "string-util.h"
30 #include "user-util.h"
32 static Hashmap
*polkit_registry
= NULL
;
34 static int locale_update_system_manager(Context
*c
, sd_bus
*bus
) {
35 _cleanup_free_
char **l_unset
= NULL
;
36 _cleanup_strv_free_
char **l_set
= NULL
;
37 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*m
= NULL
;
38 sd_bus_error error
= SD_BUS_ERROR_NULL
;
39 unsigned c_set
, c_unset
, p
;
44 l_unset
= new0(char*, _VARIABLE_LC_MAX
);
48 l_set
= new0(char*, _VARIABLE_LC_MAX
);
52 for (p
= 0, c_set
= 0, c_unset
= 0; p
< _VARIABLE_LC_MAX
; p
++) {
55 name
= locale_variable_to_string(p
);
58 if (isempty(c
->locale
[p
]))
59 l_unset
[c_set
++] = (char*) name
;
63 if (asprintf(&s
, "%s=%s", name
, c
->locale
[p
]) < 0)
70 assert(c_set
+ c_unset
== _VARIABLE_LC_MAX
);
71 r
= sd_bus_message_new_method_call(bus
, &m
,
72 "org.freedesktop.systemd1",
73 "/org/freedesktop/systemd1",
74 "org.freedesktop.systemd1.Manager",
75 "UnsetAndSetEnvironment");
79 r
= sd_bus_message_append_strv(m
, l_unset
);
83 r
= sd_bus_message_append_strv(m
, l_set
);
87 r
= sd_bus_call(bus
, m
, 0, &error
, NULL
);
89 log_error_errno(r
, "Failed to update the manager environment, ignoring: %m");
94 static int vconsole_reload(sd_bus
*bus
) {
95 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
100 r
= sd_bus_call_method(bus
,
101 "org.freedesktop.systemd1",
102 "/org/freedesktop/systemd1",
103 "org.freedesktop.systemd1.Manager",
107 "ss", "systemd-vconsole-setup.service", "replace");
110 log_error("Failed to issue method call: %s", bus_error_message(&error
, -r
));
114 static int vconsole_convert_to_x11_and_emit(Context
*c
, sd_bus_message
*m
) {
119 r
= x11_read_data(c
, m
);
123 r
= vconsole_convert_to_x11(c
);
128 r
= x11_write_data(c
);
130 return log_error_errno(r
, "Failed to write X11 keyboard layout: %m");
132 sd_bus_emit_properties_changed(sd_bus_message_get_bus(m
),
133 "/org/freedesktop/locale1",
134 "org.freedesktop.locale1",
135 "X11Layout", "X11Model", "X11Variant", "X11Options", NULL
);
140 static int x11_convert_to_vconsole_and_emit(Context
*c
, sd_bus_message
*m
) {
145 r
= vconsole_read_data(c
, m
);
149 r
= x11_convert_to_vconsole(c
);
154 r
= vconsole_write_data(c
);
156 log_error_errno(r
, "Failed to save virtual console keymap: %m");
158 sd_bus_emit_properties_changed(sd_bus_message_get_bus(m
),
159 "/org/freedesktop/locale1",
160 "org.freedesktop.locale1",
161 "VConsoleKeymap", "VConsoleKeymapToggle", NULL
);
163 return vconsole_reload(sd_bus_message_get_bus(m
));
166 static int property_get_locale(
169 const char *interface
,
170 const char *property
,
171 sd_bus_message
*reply
,
173 sd_bus_error
*error
) {
175 Context
*c
= userdata
;
176 _cleanup_strv_free_
char **l
= NULL
;
179 r
= locale_read_data(c
, reply
);
183 l
= new0(char*, _VARIABLE_LC_MAX
+1);
187 for (p
= 0, q
= 0; p
< _VARIABLE_LC_MAX
; p
++) {
191 name
= locale_variable_to_string(p
);
194 if (isempty(c
->locale
[p
]))
197 if (asprintf(&t
, "%s=%s", name
, c
->locale
[p
]) < 0)
203 return sd_bus_message_append_strv(reply
, l
);
206 static int property_get_vconsole(
209 const char *interface
,
210 const char *property
,
211 sd_bus_message
*reply
,
213 sd_bus_error
*error
) {
215 Context
*c
= userdata
;
218 r
= vconsole_read_data(c
, reply
);
222 if (streq(property
, "VConsoleKeymap"))
223 return sd_bus_message_append_basic(reply
, 's', c
->vc_keymap
);
224 else if (streq(property
, "VConsoleKeymapToggle"))
225 return sd_bus_message_append_basic(reply
, 's', c
->vc_keymap_toggle
);
230 static int property_get_xkb(
233 const char *interface
,
234 const char *property
,
235 sd_bus_message
*reply
,
237 sd_bus_error
*error
) {
239 Context
*c
= userdata
;
242 r
= x11_read_data(c
, reply
);
246 if (streq(property
, "X11Layout"))
247 return sd_bus_message_append_basic(reply
, 's', c
->x11_layout
);
248 else if (streq(property
, "X11Model"))
249 return sd_bus_message_append_basic(reply
, 's', c
->x11_model
);
250 else if (streq(property
, "X11Variant"))
251 return sd_bus_message_append_basic(reply
, 's', c
->x11_variant
);
252 else if (streq(property
, "X11Options"))
253 return sd_bus_message_append_basic(reply
, 's', c
->x11_options
);
258 static void locale_free(char ***l
) {
261 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
262 (*l
)[p
] = mfree((*l
)[p
]);
265 static int method_set_locale(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
266 Context
*c
= userdata
;
267 _cleanup_strv_free_
char **settings
= NULL
, **l
= NULL
;
268 char *new_locale
[_VARIABLE_LC_MAX
] = {}, **i
;
269 _cleanup_(locale_free
) _unused_
char **dummy
= new_locale
;
270 bool modified
= false;
271 int interactive
, p
, r
;
276 r
= bus_message_read_strv_extend(m
, &l
);
280 r
= sd_bus_message_read_basic(m
, 'b', &interactive
);
284 /* If single locale without variable name is provided, then we assume it is LANG=. */
285 if (strv_length(l
) == 1 && !strchr(*l
, '=')) {
286 if (!locale_is_valid(*l
))
287 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid Locale data.");
289 new_locale
[VARIABLE_LANG
] = strdup(*l
);
290 if (!new_locale
[VARIABLE_LANG
])
296 /* Check whether a variable is valid */
300 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++) {
304 name
= locale_variable_to_string(p
);
308 if (startswith(*i
, name
) &&
310 locale_is_valid((*i
) + k
+ 1)) {
313 new_locale
[p
] = strdup((*i
) + k
+ 1);
322 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid Locale data.");
325 /* If LANG was specified, but not LANGUAGE, check if we should
326 * set it based on the language fallback table. */
327 if (!isempty(new_locale
[VARIABLE_LANG
]) &&
328 isempty(new_locale
[VARIABLE_LANGUAGE
])) {
329 _cleanup_free_
char *language
= NULL
;
331 (void) find_language_fallback(new_locale
[VARIABLE_LANG
], &language
);
333 log_debug("Converted LANG=%s to LANGUAGE=%s", new_locale
[VARIABLE_LANG
], language
);
334 free_and_replace(new_locale
[VARIABLE_LANGUAGE
], language
);
338 r
= locale_read_data(c
, m
);
340 log_error_errno(r
, "Failed to read locale data: %m");
341 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Failed to read locale data");
344 /* Merge with the current settings */
345 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
346 if (!isempty(c
->locale
[p
]) && isempty(new_locale
[p
])) {
347 new_locale
[p
] = strdup(c
->locale
[p
]);
352 locale_simplify(new_locale
);
354 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
355 if (!streq_ptr(c
->locale
[p
], new_locale
[p
])) {
361 log_debug("Locale settings were not modified.");
362 return sd_bus_reply_method_return(m
, NULL
);
365 r
= bus_verify_polkit_async(
368 "org.freedesktop.locale1.set-locale",
377 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
379 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
380 free_and_replace(c
->locale
[p
], new_locale
[p
]);
382 r
= locale_write_data(c
, &settings
);
384 log_error_errno(r
, "Failed to set locale: %m");
385 return sd_bus_error_set_errnof(error
, r
, "Failed to set locale: %m");
388 (void) locale_update_system_manager(c
, sd_bus_message_get_bus(m
));
391 _cleanup_free_
char *line
;
393 line
= strv_join(settings
, ", ");
394 log_info("Changed locale to %s.", strnull(line
));
396 log_info("Changed locale to unset.");
398 (void) sd_bus_emit_properties_changed(
399 sd_bus_message_get_bus(m
),
400 "/org/freedesktop/locale1",
401 "org.freedesktop.locale1",
404 return sd_bus_reply_method_return(m
, NULL
);
407 static int method_set_vc_keyboard(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
408 Context
*c
= userdata
;
409 const char *keymap
, *keymap_toggle
;
410 int convert
, interactive
, r
;
415 r
= sd_bus_message_read(m
, "ssbb", &keymap
, &keymap_toggle
, &convert
, &interactive
);
419 keymap
= empty_to_null(keymap
);
420 keymap_toggle
= empty_to_null(keymap_toggle
);
422 r
= vconsole_read_data(c
, m
);
424 log_error_errno(r
, "Failed to read virtual console keymap data: %m");
425 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Failed to read virtual console keymap data");
428 if (streq_ptr(keymap
, c
->vc_keymap
) &&
429 streq_ptr(keymap_toggle
, c
->vc_keymap_toggle
))
430 return sd_bus_reply_method_return(m
, NULL
);
432 if ((keymap
&& (!filename_is_valid(keymap
) || !string_is_safe(keymap
))) ||
433 (keymap_toggle
&& (!filename_is_valid(keymap_toggle
) || !string_is_safe(keymap_toggle
))))
434 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Received invalid keymap data");
436 r
= bus_verify_polkit_async(
439 "org.freedesktop.locale1.set-keyboard",
448 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
450 if (free_and_strdup(&c
->vc_keymap
, keymap
) < 0 ||
451 free_and_strdup(&c
->vc_keymap_toggle
, keymap_toggle
) < 0)
454 r
= vconsole_write_data(c
);
456 log_error_errno(r
, "Failed to set virtual console keymap: %m");
457 return sd_bus_error_set_errnof(error
, r
, "Failed to set virtual console keymap: %m");
460 log_info("Changed virtual console keymap to '%s' toggle '%s'",
461 strempty(c
->vc_keymap
), strempty(c
->vc_keymap_toggle
));
463 r
= vconsole_reload(sd_bus_message_get_bus(m
));
465 log_error_errno(r
, "Failed to request keymap reload: %m");
467 (void) sd_bus_emit_properties_changed(
468 sd_bus_message_get_bus(m
),
469 "/org/freedesktop/locale1",
470 "org.freedesktop.locale1",
471 "VConsoleKeymap", "VConsoleKeymapToggle", NULL
);
474 r
= vconsole_convert_to_x11_and_emit(c
, m
);
476 log_error_errno(r
, "Failed to convert keymap data: %m");
479 return sd_bus_reply_method_return(m
, NULL
);
485 static void log_xkb(struct xkb_context
*ctx
, enum xkb_log_level lvl
, const char *format
, va_list args
) {
488 fmt
= strjoina("libxkbcommon: ", format
);
489 #pragma GCC diagnostic push
490 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
491 log_internalv(LOG_DEBUG
, 0, __FILE__
, __LINE__
, __func__
, fmt
, args
);
492 #pragma GCC diagnostic pop
495 #define LOAD_SYMBOL(symbol, dl, name) \
497 (symbol) = (typeof(symbol)) dlvsym((dl), (name), "V_0.5.0"); \
498 (symbol) ? 0 : -EOPNOTSUPP; \
501 static int verify_xkb_rmlvo(const char *model
, const char *layout
, const char *variant
, const char *options
) {
503 /* We dlopen() the library in order to make the dependency soft. The library (and what it pulls in) is huge
504 * after all, hence let's support XKB maps when the library is around, and refuse otherwise. The function
505 * pointers to the shared library are below: */
507 struct xkb_context
* (*symbol_xkb_context_new
)(enum xkb_context_flags flags
) = NULL
;
508 void (*symbol_xkb_context_unref
)(struct xkb_context
*context
) = NULL
;
509 void (*symbol_xkb_context_set_log_fn
)(struct xkb_context
*context
, void (*log_fn
)(struct xkb_context
*context
, enum xkb_log_level level
, const char *format
, va_list args
)) = NULL
;
510 struct xkb_keymap
* (*symbol_xkb_keymap_new_from_names
)(struct xkb_context
*context
, const struct xkb_rule_names
*names
, enum xkb_keymap_compile_flags flags
) = NULL
;
511 void (*symbol_xkb_keymap_unref
)(struct xkb_keymap
*keymap
) = NULL
;
513 const struct xkb_rule_names rmlvo
= {
519 struct xkb_context
*ctx
= NULL
;
520 struct xkb_keymap
*km
= NULL
;
524 /* Compile keymap from RMLVO information to check out its validity */
526 dl
= dlopen("libxkbcommon.so.0", RTLD_LAZY
);
530 r
= LOAD_SYMBOL(symbol_xkb_context_new
, dl
, "xkb_context_new");
534 r
= LOAD_SYMBOL(symbol_xkb_context_unref
, dl
, "xkb_context_unref");
538 r
= LOAD_SYMBOL(symbol_xkb_context_set_log_fn
, dl
, "xkb_context_set_log_fn");
542 r
= LOAD_SYMBOL(symbol_xkb_keymap_new_from_names
, dl
, "xkb_keymap_new_from_names");
546 r
= LOAD_SYMBOL(symbol_xkb_keymap_unref
, dl
, "xkb_keymap_unref");
550 ctx
= symbol_xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES
);
556 symbol_xkb_context_set_log_fn(ctx
, log_xkb
);
558 km
= symbol_xkb_keymap_new_from_names(ctx
, &rmlvo
, XKB_KEYMAP_COMPILE_NO_FLAGS
);
567 if (symbol_xkb_keymap_unref
&& km
)
568 symbol_xkb_keymap_unref(km
);
570 if (symbol_xkb_context_unref
&& ctx
)
571 symbol_xkb_context_unref(ctx
);
579 static int verify_xkb_rmlvo(const char *model
, const char *layout
, const char *variant
, const char *options
) {
585 static int method_set_x11_keyboard(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
586 Context
*c
= userdata
;
587 const char *layout
, *model
, *variant
, *options
;
588 int convert
, interactive
, r
;
593 r
= sd_bus_message_read(m
, "ssssbb", &layout
, &model
, &variant
, &options
, &convert
, &interactive
);
597 layout
= empty_to_null(layout
);
598 model
= empty_to_null(model
);
599 variant
= empty_to_null(variant
);
600 options
= empty_to_null(options
);
602 r
= x11_read_data(c
, m
);
604 log_error_errno(r
, "Failed to read x11 keyboard layout data: %m");
605 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Failed to read x11 keyboard layout data");
608 if (streq_ptr(layout
, c
->x11_layout
) &&
609 streq_ptr(model
, c
->x11_model
) &&
610 streq_ptr(variant
, c
->x11_variant
) &&
611 streq_ptr(options
, c
->x11_options
))
612 return sd_bus_reply_method_return(m
, NULL
);
614 if ((layout
&& !string_is_safe(layout
)) ||
615 (model
&& !string_is_safe(model
)) ||
616 (variant
&& !string_is_safe(variant
)) ||
617 (options
&& !string_is_safe(options
)))
618 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Received invalid keyboard data");
620 r
= verify_xkb_rmlvo(model
, layout
, variant
, options
);
622 log_error_errno(r
, "Cannot compile XKB keymap for new x11 keyboard layout ('%s' / '%s' / '%s' / '%s'): %m",
623 strempty(model
), strempty(layout
), strempty(variant
), strempty(options
));
625 if (r
== -EOPNOTSUPP
)
626 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Local keyboard configuration not supported on this system.");
628 return sd_bus_error_set(error
, SD_BUS_ERROR_INVALID_ARGS
, "Specified keymap cannot be compiled, refusing as invalid.");
631 r
= bus_verify_polkit_async(
634 "org.freedesktop.locale1.set-keyboard",
643 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
645 if (free_and_strdup(&c
->x11_layout
, layout
) < 0 ||
646 free_and_strdup(&c
->x11_model
, model
) < 0 ||
647 free_and_strdup(&c
->x11_variant
, variant
) < 0 ||
648 free_and_strdup(&c
->x11_options
, options
) < 0)
651 r
= x11_write_data(c
);
653 log_error_errno(r
, "Failed to set X11 keyboard layout: %m");
654 return sd_bus_error_set_errnof(error
, r
, "Failed to set X11 keyboard layout: %m");
657 log_info("Changed X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
658 strempty(c
->x11_layout
),
659 strempty(c
->x11_model
),
660 strempty(c
->x11_variant
),
661 strempty(c
->x11_options
));
663 (void) sd_bus_emit_properties_changed(
664 sd_bus_message_get_bus(m
),
665 "/org/freedesktop/locale1",
666 "org.freedesktop.locale1",
667 "X11Layout", "X11Model", "X11Variant", "X11Options", NULL
);
670 r
= x11_convert_to_vconsole_and_emit(c
, m
);
672 log_error_errno(r
, "Failed to convert keymap data: %m");
675 return sd_bus_reply_method_return(m
, NULL
);
678 static const sd_bus_vtable locale_vtable
[] = {
679 SD_BUS_VTABLE_START(0),
680 SD_BUS_PROPERTY("Locale", "as", property_get_locale
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
681 SD_BUS_PROPERTY("X11Layout", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
682 SD_BUS_PROPERTY("X11Model", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
683 SD_BUS_PROPERTY("X11Variant", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
684 SD_BUS_PROPERTY("X11Options", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
685 SD_BUS_PROPERTY("VConsoleKeymap", "s", property_get_vconsole
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
686 SD_BUS_PROPERTY("VConsoleKeymapToggle", "s", property_get_vconsole
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
687 SD_BUS_METHOD("SetLocale", "asb", NULL
, method_set_locale
, SD_BUS_VTABLE_UNPRIVILEGED
),
688 SD_BUS_METHOD("SetVConsoleKeyboard", "ssbb", NULL
, method_set_vc_keyboard
, SD_BUS_VTABLE_UNPRIVILEGED
),
689 SD_BUS_METHOD("SetX11Keyboard", "ssssbb", NULL
, method_set_x11_keyboard
, SD_BUS_VTABLE_UNPRIVILEGED
),
693 static int connect_bus(Context
*c
, sd_event
*event
, sd_bus
**_bus
) {
694 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
701 r
= sd_bus_default_system(&bus
);
703 return log_error_errno(r
, "Failed to get system bus connection: %m");
705 r
= sd_bus_add_object_vtable(bus
, NULL
, "/org/freedesktop/locale1", "org.freedesktop.locale1", locale_vtable
, c
);
707 return log_error_errno(r
, "Failed to register object: %m");
709 r
= sd_bus_request_name_async(bus
, NULL
, "org.freedesktop.locale1", 0, NULL
, NULL
);
711 return log_error_errno(r
, "Failed to request name: %m");
713 r
= sd_bus_attach_event(bus
, event
, 0);
715 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
717 *_bus
= TAKE_PTR(bus
);
722 int main(int argc
, char *argv
[]) {
723 _cleanup_(context_free
) Context context
= {
724 .locale_mtime
= USEC_INFINITY
,
725 .vc_mtime
= USEC_INFINITY
,
726 .x11_mtime
= USEC_INFINITY
,
728 _cleanup_(sd_event_unrefp
) sd_event
*event
= NULL
;
729 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
732 log_set_target(LOG_TARGET_AUTO
);
733 log_parse_environment();
740 log_error("This program takes no arguments.");
745 r
= sd_event_default(&event
);
747 log_error_errno(r
, "Failed to allocate event loop: %m");
751 sd_event_set_watchdog(event
, true);
753 r
= connect_bus(&context
, event
, &bus
);
757 r
= bus_event_loop_with_idle(event
, bus
, "org.freedesktop.locale1", DEFAULT_EXIT_USEC
, NULL
, NULL
);
759 log_error_errno(r
, "Failed to run event loop: %m");
762 bus_verify_polkit_async_registry_free(polkit_registry
);
764 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;