1 /* SPDX-License-Identifier: LGPL-2.1+ */
8 #include <xkbcommon/xkbcommon.h>
14 #include "alloc-util.h"
15 #include "bus-error.h"
16 #include "bus-message.h"
19 #include "keymap-util.h"
20 #include "locale-util.h"
22 #include "path-util.h"
23 #include "selinux-util.h"
24 #include "signal-util.h"
25 #include "string-util.h"
27 #include "user-util.h"
29 static Hashmap
*polkit_registry
= NULL
;
31 static int locale_update_system_manager(Context
*c
, sd_bus
*bus
) {
32 _cleanup_free_
char **l_unset
= NULL
;
33 _cleanup_strv_free_
char **l_set
= NULL
;
34 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*m
= NULL
;
35 sd_bus_error error
= SD_BUS_ERROR_NULL
;
36 size_t c_set
, c_unset
;
42 l_unset
= new0(char*, _VARIABLE_LC_MAX
);
46 l_set
= new0(char*, _VARIABLE_LC_MAX
);
50 for (p
= 0, c_set
= 0, c_unset
= 0; p
< _VARIABLE_LC_MAX
; p
++) {
53 name
= locale_variable_to_string(p
);
56 if (isempty(c
->locale
[p
]))
57 l_unset
[c_set
++] = (char*) name
;
61 s
= strjoin(name
, "=", c
->locale
[p
]);
69 assert(c_set
+ c_unset
== _VARIABLE_LC_MAX
);
70 r
= sd_bus_message_new_method_call(bus
, &m
,
71 "org.freedesktop.systemd1",
72 "/org/freedesktop/systemd1",
73 "org.freedesktop.systemd1.Manager",
74 "UnsetAndSetEnvironment");
76 return bus_log_create_error(r
);
78 r
= sd_bus_message_append_strv(m
, l_unset
);
80 return bus_log_create_error(r
);
82 r
= sd_bus_message_append_strv(m
, l_set
);
84 return bus_log_create_error(r
);
86 r
= sd_bus_call(bus
, m
, 0, &error
, NULL
);
88 return log_error_errno(r
, "Failed to update the manager environment: %s", bus_error_message(&error
, r
));
93 static int vconsole_reload(sd_bus
*bus
) {
94 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
99 r
= sd_bus_call_method(bus
,
100 "org.freedesktop.systemd1",
101 "/org/freedesktop/systemd1",
102 "org.freedesktop.systemd1.Manager",
106 "ss", "systemd-vconsole-setup.service", "replace");
109 return log_error_errno(r
, "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 int method_set_locale(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
259 _cleanup_(locale_variables_freep
) char *new_locale
[_VARIABLE_LC_MAX
] = {};
260 _cleanup_strv_free_
char **settings
= NULL
, **l
= NULL
;
261 Context
*c
= userdata
;
262 bool modified
= false;
263 int interactive
, p
, r
;
269 r
= bus_message_read_strv_extend(m
, &l
);
273 r
= sd_bus_message_read_basic(m
, 'b', &interactive
);
277 /* If single locale without variable name is provided, then we assume it is LANG=. */
278 if (strv_length(l
) == 1 && !strchr(*l
, '=')) {
279 if (!locale_is_valid(*l
))
280 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid Locale data.");
282 new_locale
[VARIABLE_LANG
] = strdup(*l
);
283 if (!new_locale
[VARIABLE_LANG
])
289 /* Check whether a variable is valid */
293 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++) {
297 name
= locale_variable_to_string(p
);
301 if (startswith(*i
, name
) &&
303 locale_is_valid((*i
) + k
+ 1)) {
306 new_locale
[p
] = strdup((*i
) + k
+ 1);
315 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid Locale data.");
318 /* If LANG was specified, but not LANGUAGE, check if we should
319 * set it based on the language fallback table. */
320 if (!isempty(new_locale
[VARIABLE_LANG
]) &&
321 isempty(new_locale
[VARIABLE_LANGUAGE
])) {
322 _cleanup_free_
char *language
= NULL
;
324 (void) find_language_fallback(new_locale
[VARIABLE_LANG
], &language
);
326 log_debug("Converted LANG=%s to LANGUAGE=%s", new_locale
[VARIABLE_LANG
], language
);
327 free_and_replace(new_locale
[VARIABLE_LANGUAGE
], language
);
331 r
= locale_read_data(c
, m
);
333 log_error_errno(r
, "Failed to read locale data: %m");
334 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Failed to read locale data");
337 /* Merge with the current settings */
338 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
339 if (!isempty(c
->locale
[p
]) && isempty(new_locale
[p
])) {
340 new_locale
[p
] = strdup(c
->locale
[p
]);
345 locale_simplify(new_locale
);
347 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
348 if (!streq_ptr(c
->locale
[p
], new_locale
[p
])) {
354 log_debug("Locale settings were not modified.");
355 return sd_bus_reply_method_return(m
, NULL
);
358 r
= bus_verify_polkit_async(
361 "org.freedesktop.locale1.set-locale",
370 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
372 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
373 free_and_replace(c
->locale
[p
], new_locale
[p
]);
375 r
= locale_write_data(c
, &settings
);
377 log_error_errno(r
, "Failed to set locale: %m");
378 return sd_bus_error_set_errnof(error
, r
, "Failed to set locale: %m");
381 (void) locale_update_system_manager(c
, sd_bus_message_get_bus(m
));
384 _cleanup_free_
char *line
;
386 line
= strv_join(settings
, ", ");
387 log_info("Changed locale to %s.", strnull(line
));
389 log_info("Changed locale to unset.");
391 (void) sd_bus_emit_properties_changed(
392 sd_bus_message_get_bus(m
),
393 "/org/freedesktop/locale1",
394 "org.freedesktop.locale1",
397 return sd_bus_reply_method_return(m
, NULL
);
400 static int method_set_vc_keyboard(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
401 Context
*c
= userdata
;
402 const char *keymap
, *keymap_toggle
;
403 int convert
, interactive
, r
;
408 r
= sd_bus_message_read(m
, "ssbb", &keymap
, &keymap_toggle
, &convert
, &interactive
);
412 keymap
= empty_to_null(keymap
);
413 keymap_toggle
= empty_to_null(keymap_toggle
);
415 r
= vconsole_read_data(c
, m
);
417 log_error_errno(r
, "Failed to read virtual console keymap data: %m");
418 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Failed to read virtual console keymap data");
421 if (streq_ptr(keymap
, c
->vc_keymap
) &&
422 streq_ptr(keymap_toggle
, c
->vc_keymap_toggle
))
423 return sd_bus_reply_method_return(m
, NULL
);
425 if ((keymap
&& (!filename_is_valid(keymap
) || !string_is_safe(keymap
))) ||
426 (keymap_toggle
&& (!filename_is_valid(keymap_toggle
) || !string_is_safe(keymap_toggle
))))
427 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Received invalid keymap data");
429 r
= bus_verify_polkit_async(
432 "org.freedesktop.locale1.set-keyboard",
441 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
443 if (free_and_strdup(&c
->vc_keymap
, keymap
) < 0 ||
444 free_and_strdup(&c
->vc_keymap_toggle
, keymap_toggle
) < 0)
447 r
= vconsole_write_data(c
);
449 log_error_errno(r
, "Failed to set virtual console keymap: %m");
450 return sd_bus_error_set_errnof(error
, r
, "Failed to set virtual console keymap: %m");
453 log_info("Changed virtual console keymap to '%s' toggle '%s'",
454 strempty(c
->vc_keymap
), strempty(c
->vc_keymap_toggle
));
456 (void) vconsole_reload(sd_bus_message_get_bus(m
));
458 (void) sd_bus_emit_properties_changed(
459 sd_bus_message_get_bus(m
),
460 "/org/freedesktop/locale1",
461 "org.freedesktop.locale1",
462 "VConsoleKeymap", "VConsoleKeymapToggle", NULL
);
465 r
= vconsole_convert_to_x11_and_emit(c
, m
);
467 log_error_errno(r
, "Failed to convert keymap data: %m");
470 return sd_bus_reply_method_return(m
, NULL
);
476 static void log_xkb(struct xkb_context
*ctx
, enum xkb_log_level lvl
, const char *format
, va_list args
) {
479 fmt
= strjoina("libxkbcommon: ", format
);
480 #pragma GCC diagnostic push
481 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
482 log_internalv(LOG_DEBUG
, 0, __FILE__
, __LINE__
, __func__
, fmt
, args
);
483 #pragma GCC diagnostic pop
486 #define LOAD_SYMBOL(symbol, dl, name) \
488 (symbol) = (typeof(symbol)) dlvsym((dl), (name), "V_0.5.0"); \
489 (symbol) ? 0 : -EOPNOTSUPP; \
492 static int verify_xkb_rmlvo(const char *model
, const char *layout
, const char *variant
, const char *options
) {
494 /* We dlopen() the library in order to make the dependency soft. The library (and what it pulls in) is huge
495 * after all, hence let's support XKB maps when the library is around, and refuse otherwise. The function
496 * pointers to the shared library are below: */
498 struct xkb_context
* (*symbol_xkb_context_new
)(enum xkb_context_flags flags
) = NULL
;
499 void (*symbol_xkb_context_unref
)(struct xkb_context
*context
) = NULL
;
500 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
;
501 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
;
502 void (*symbol_xkb_keymap_unref
)(struct xkb_keymap
*keymap
) = NULL
;
504 const struct xkb_rule_names rmlvo
= {
510 struct xkb_context
*ctx
= NULL
;
511 struct xkb_keymap
*km
= NULL
;
515 /* Compile keymap from RMLVO information to check out its validity */
517 dl
= dlopen("libxkbcommon.so.0", RTLD_LAZY
);
521 r
= LOAD_SYMBOL(symbol_xkb_context_new
, dl
, "xkb_context_new");
525 r
= LOAD_SYMBOL(symbol_xkb_context_unref
, dl
, "xkb_context_unref");
529 r
= LOAD_SYMBOL(symbol_xkb_context_set_log_fn
, dl
, "xkb_context_set_log_fn");
533 r
= LOAD_SYMBOL(symbol_xkb_keymap_new_from_names
, dl
, "xkb_keymap_new_from_names");
537 r
= LOAD_SYMBOL(symbol_xkb_keymap_unref
, dl
, "xkb_keymap_unref");
541 ctx
= symbol_xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES
);
547 symbol_xkb_context_set_log_fn(ctx
, log_xkb
);
549 km
= symbol_xkb_keymap_new_from_names(ctx
, &rmlvo
, XKB_KEYMAP_COMPILE_NO_FLAGS
);
558 if (symbol_xkb_keymap_unref
&& km
)
559 symbol_xkb_keymap_unref(km
);
561 if (symbol_xkb_context_unref
&& ctx
)
562 symbol_xkb_context_unref(ctx
);
570 static int verify_xkb_rmlvo(const char *model
, const char *layout
, const char *variant
, const char *options
) {
576 static int method_set_x11_keyboard(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
577 Context
*c
= userdata
;
578 const char *layout
, *model
, *variant
, *options
;
579 int convert
, interactive
, r
;
584 r
= sd_bus_message_read(m
, "ssssbb", &layout
, &model
, &variant
, &options
, &convert
, &interactive
);
588 layout
= empty_to_null(layout
);
589 model
= empty_to_null(model
);
590 variant
= empty_to_null(variant
);
591 options
= empty_to_null(options
);
593 r
= x11_read_data(c
, m
);
595 log_error_errno(r
, "Failed to read x11 keyboard layout data: %m");
596 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Failed to read x11 keyboard layout data");
599 if (streq_ptr(layout
, c
->x11_layout
) &&
600 streq_ptr(model
, c
->x11_model
) &&
601 streq_ptr(variant
, c
->x11_variant
) &&
602 streq_ptr(options
, c
->x11_options
))
603 return sd_bus_reply_method_return(m
, NULL
);
605 if ((layout
&& !string_is_safe(layout
)) ||
606 (model
&& !string_is_safe(model
)) ||
607 (variant
&& !string_is_safe(variant
)) ||
608 (options
&& !string_is_safe(options
)))
609 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Received invalid keyboard data");
611 r
= verify_xkb_rmlvo(model
, layout
, variant
, options
);
613 log_error_errno(r
, "Cannot compile XKB keymap for new x11 keyboard layout ('%s' / '%s' / '%s' / '%s'): %m",
614 strempty(model
), strempty(layout
), strempty(variant
), strempty(options
));
616 if (r
== -EOPNOTSUPP
)
617 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Local keyboard configuration not supported on this system.");
619 return sd_bus_error_set(error
, SD_BUS_ERROR_INVALID_ARGS
, "Specified keymap cannot be compiled, refusing as invalid.");
622 r
= bus_verify_polkit_async(
625 "org.freedesktop.locale1.set-keyboard",
634 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
636 if (free_and_strdup(&c
->x11_layout
, layout
) < 0 ||
637 free_and_strdup(&c
->x11_model
, model
) < 0 ||
638 free_and_strdup(&c
->x11_variant
, variant
) < 0 ||
639 free_and_strdup(&c
->x11_options
, options
) < 0)
642 r
= x11_write_data(c
);
644 log_error_errno(r
, "Failed to set X11 keyboard layout: %m");
645 return sd_bus_error_set_errnof(error
, r
, "Failed to set X11 keyboard layout: %m");
648 log_info("Changed X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
649 strempty(c
->x11_layout
),
650 strempty(c
->x11_model
),
651 strempty(c
->x11_variant
),
652 strempty(c
->x11_options
));
654 (void) sd_bus_emit_properties_changed(
655 sd_bus_message_get_bus(m
),
656 "/org/freedesktop/locale1",
657 "org.freedesktop.locale1",
658 "X11Layout", "X11Model", "X11Variant", "X11Options", NULL
);
661 r
= x11_convert_to_vconsole_and_emit(c
, m
);
663 log_error_errno(r
, "Failed to convert keymap data: %m");
666 return sd_bus_reply_method_return(m
, NULL
);
669 static const sd_bus_vtable locale_vtable
[] = {
670 SD_BUS_VTABLE_START(0),
671 SD_BUS_PROPERTY("Locale", "as", property_get_locale
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
672 SD_BUS_PROPERTY("X11Layout", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
673 SD_BUS_PROPERTY("X11Model", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
674 SD_BUS_PROPERTY("X11Variant", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
675 SD_BUS_PROPERTY("X11Options", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
676 SD_BUS_PROPERTY("VConsoleKeymap", "s", property_get_vconsole
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
677 SD_BUS_PROPERTY("VConsoleKeymapToggle", "s", property_get_vconsole
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
678 SD_BUS_METHOD("SetLocale", "asb", NULL
, method_set_locale
, SD_BUS_VTABLE_UNPRIVILEGED
),
679 SD_BUS_METHOD("SetVConsoleKeyboard", "ssbb", NULL
, method_set_vc_keyboard
, SD_BUS_VTABLE_UNPRIVILEGED
),
680 SD_BUS_METHOD("SetX11Keyboard", "ssssbb", NULL
, method_set_x11_keyboard
, SD_BUS_VTABLE_UNPRIVILEGED
),
684 static int connect_bus(Context
*c
, sd_event
*event
, sd_bus
**_bus
) {
685 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
692 r
= sd_bus_default_system(&bus
);
694 return log_error_errno(r
, "Failed to get system bus connection: %m");
696 r
= sd_bus_add_object_vtable(bus
, NULL
, "/org/freedesktop/locale1", "org.freedesktop.locale1", locale_vtable
, c
);
698 return log_error_errno(r
, "Failed to register object: %m");
700 r
= sd_bus_request_name_async(bus
, NULL
, "org.freedesktop.locale1", 0, NULL
, NULL
);
702 return log_error_errno(r
, "Failed to request name: %m");
704 r
= sd_bus_attach_event(bus
, event
, 0);
706 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
708 *_bus
= TAKE_PTR(bus
);
713 int main(int argc
, char *argv
[]) {
714 _cleanup_(context_free
) Context context
= {
715 .locale_mtime
= USEC_INFINITY
,
716 .vc_mtime
= USEC_INFINITY
,
717 .x11_mtime
= USEC_INFINITY
,
719 _cleanup_(sd_event_unrefp
) sd_event
*event
= NULL
;
720 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
729 log_error("This program takes no arguments.");
734 assert_se(sigprocmask_many(SIG_BLOCK
, NULL
, SIGTERM
, SIGINT
, -1) >= 0);
736 r
= sd_event_default(&event
);
738 log_error_errno(r
, "Failed to allocate event loop: %m");
742 (void) sd_event_set_watchdog(event
, true);
744 r
= sd_event_add_signal(event
, NULL
, SIGINT
, NULL
, NULL
);
746 log_error_errno(r
, "Failed to install SIGINT handler: %m");
750 r
= sd_event_add_signal(event
, NULL
, SIGTERM
, NULL
, NULL
);
752 log_error_errno(r
, "Failed to install SIGTERM handler: %m");
756 r
= connect_bus(&context
, event
, &bus
);
760 r
= bus_event_loop_with_idle(event
, bus
, "org.freedesktop.locale1", DEFAULT_EXIT_USEC
, NULL
, NULL
);
762 log_error_errno(r
, "Failed to run event loop: %m");
765 bus_verify_polkit_async_registry_free(polkit_registry
);
767 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;