1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 This file is part of systemd.
5 Copyright 2011 Lennart Poettering
6 Copyright 2013 Kay Sievers
14 #include <xkbcommon/xkbcommon.h>
20 #include "alloc-util.h"
21 #include "bus-error.h"
22 #include "bus-message.h"
25 #include "keymap-util.h"
26 #include "locale-util.h"
28 #include "path-util.h"
29 #include "selinux-util.h"
30 #include "string-util.h"
32 #include "user-util.h"
34 static Hashmap
*polkit_registry
= NULL
;
36 static int locale_update_system_manager(Context
*c
, sd_bus
*bus
) {
37 _cleanup_free_
char **l_unset
= NULL
;
38 _cleanup_strv_free_
char **l_set
= NULL
;
39 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*m
= NULL
;
40 sd_bus_error error
= SD_BUS_ERROR_NULL
;
41 unsigned c_set
, c_unset
, p
;
46 l_unset
= new0(char*, _VARIABLE_LC_MAX
);
50 l_set
= new0(char*, _VARIABLE_LC_MAX
);
54 for (p
= 0, c_set
= 0, c_unset
= 0; p
< _VARIABLE_LC_MAX
; p
++) {
57 name
= locale_variable_to_string(p
);
60 if (isempty(c
->locale
[p
]))
61 l_unset
[c_set
++] = (char*) name
;
65 if (asprintf(&s
, "%s=%s", name
, c
->locale
[p
]) < 0)
72 assert(c_set
+ c_unset
== _VARIABLE_LC_MAX
);
73 r
= sd_bus_message_new_method_call(bus
, &m
,
74 "org.freedesktop.systemd1",
75 "/org/freedesktop/systemd1",
76 "org.freedesktop.systemd1.Manager",
77 "UnsetAndSetEnvironment");
81 r
= sd_bus_message_append_strv(m
, l_unset
);
85 r
= sd_bus_message_append_strv(m
, l_set
);
89 r
= sd_bus_call(bus
, m
, 0, &error
, NULL
);
91 log_error_errno(r
, "Failed to update the manager environment, ignoring: %m");
96 static int vconsole_reload(sd_bus
*bus
) {
97 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
102 r
= sd_bus_call_method(bus
,
103 "org.freedesktop.systemd1",
104 "/org/freedesktop/systemd1",
105 "org.freedesktop.systemd1.Manager",
109 "ss", "systemd-vconsole-setup.service", "replace");
112 log_error("Failed to issue method call: %s", bus_error_message(&error
, -r
));
116 static int vconsole_convert_to_x11_and_emit(Context
*c
, sd_bus_message
*m
) {
121 r
= x11_read_data(c
, m
);
125 r
= vconsole_convert_to_x11(c
);
130 r
= x11_write_data(c
);
132 return log_error_errno(r
, "Failed to write X11 keyboard layout: %m");
134 sd_bus_emit_properties_changed(sd_bus_message_get_bus(m
),
135 "/org/freedesktop/locale1",
136 "org.freedesktop.locale1",
137 "X11Layout", "X11Model", "X11Variant", "X11Options", NULL
);
142 static int x11_convert_to_vconsole_and_emit(Context
*c
, sd_bus_message
*m
) {
147 r
= vconsole_read_data(c
, m
);
151 r
= x11_convert_to_vconsole(c
);
156 r
= vconsole_write_data(c
);
158 log_error_errno(r
, "Failed to save virtual console keymap: %m");
160 sd_bus_emit_properties_changed(sd_bus_message_get_bus(m
),
161 "/org/freedesktop/locale1",
162 "org.freedesktop.locale1",
163 "VConsoleKeymap", "VConsoleKeymapToggle", NULL
);
165 return vconsole_reload(sd_bus_message_get_bus(m
));
168 static int property_get_locale(
171 const char *interface
,
172 const char *property
,
173 sd_bus_message
*reply
,
175 sd_bus_error
*error
) {
177 Context
*c
= userdata
;
178 _cleanup_strv_free_
char **l
= NULL
;
181 r
= locale_read_data(c
, reply
);
185 l
= new0(char*, _VARIABLE_LC_MAX
+1);
189 for (p
= 0, q
= 0; p
< _VARIABLE_LC_MAX
; p
++) {
193 name
= locale_variable_to_string(p
);
196 if (isempty(c
->locale
[p
]))
199 if (asprintf(&t
, "%s=%s", name
, c
->locale
[p
]) < 0)
205 return sd_bus_message_append_strv(reply
, l
);
208 static int property_get_vconsole(
211 const char *interface
,
212 const char *property
,
213 sd_bus_message
*reply
,
215 sd_bus_error
*error
) {
217 Context
*c
= userdata
;
220 r
= vconsole_read_data(c
, reply
);
224 if (streq(property
, "VConsoleKeymap"))
225 return sd_bus_message_append_basic(reply
, 's', c
->vc_keymap
);
226 else if (streq(property
, "VConsoleKeymapToggle"))
227 return sd_bus_message_append_basic(reply
, 's', c
->vc_keymap_toggle
);
232 static int property_get_xkb(
235 const char *interface
,
236 const char *property
,
237 sd_bus_message
*reply
,
239 sd_bus_error
*error
) {
241 Context
*c
= userdata
;
244 r
= x11_read_data(c
, reply
);
248 if (streq(property
, "X11Layout"))
249 return sd_bus_message_append_basic(reply
, 's', c
->x11_layout
);
250 else if (streq(property
, "X11Model"))
251 return sd_bus_message_append_basic(reply
, 's', c
->x11_model
);
252 else if (streq(property
, "X11Variant"))
253 return sd_bus_message_append_basic(reply
, 's', c
->x11_variant
);
254 else if (streq(property
, "X11Options"))
255 return sd_bus_message_append_basic(reply
, 's', c
->x11_options
);
260 static void locale_free(char ***l
) {
263 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
264 (*l
)[p
] = mfree((*l
)[p
]);
267 static int method_set_locale(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
268 Context
*c
= userdata
;
269 _cleanup_strv_free_
char **settings
= NULL
, **l
= NULL
;
270 char *new_locale
[_VARIABLE_LC_MAX
] = {};
271 _cleanup_(locale_free
) char **dummy
= new_locale
;
272 bool modified
= false;
273 int interactive
, p
, r
;
279 r
= bus_message_read_strv_extend(m
, &l
);
283 r
= sd_bus_message_read_basic(m
, 'b', &interactive
);
287 /* If single locale without variable name is provided, then we assume it is LANG=. */
288 if (strv_length(l
) == 1 && !strchr(*l
, '=')) {
289 if (!locale_is_valid(*l
))
290 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid Locale data.");
292 new_locale
[VARIABLE_LANG
] = strdup(*l
);
293 if (!new_locale
[VARIABLE_LANG
])
299 /* Check whether a variable is valid */
303 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++) {
307 name
= locale_variable_to_string(p
);
311 if (startswith(*i
, name
) &&
313 locale_is_valid((*i
) + k
+ 1)) {
316 new_locale
[p
] = strdup((*i
) + k
+ 1);
325 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid Locale data.");
328 /* If LANG was specified, but not LANGUAGE, check if we should
329 * set it based on the language fallback table. */
330 if (!isempty(new_locale
[VARIABLE_LANG
]) &&
331 isempty(new_locale
[VARIABLE_LANGUAGE
])) {
332 _cleanup_free_
char *language
= NULL
;
334 (void) find_language_fallback(new_locale
[VARIABLE_LANG
], &language
);
336 log_debug("Converted LANG=%s to LANGUAGE=%s", new_locale
[VARIABLE_LANG
], language
);
337 free_and_replace(new_locale
[VARIABLE_LANGUAGE
], language
);
341 r
= locale_read_data(c
, m
);
343 log_error_errno(r
, "Failed to read locale data: %m");
344 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Failed to read locale data");
347 /* Merge with the current settings */
348 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
349 if (!isempty(c
->locale
[p
]) && isempty(new_locale
[p
])) {
350 new_locale
[p
] = strdup(c
->locale
[p
]);
355 locale_simplify(new_locale
);
357 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
358 if (!streq_ptr(c
->locale
[p
], new_locale
[p
])) {
364 log_debug("Locale settings were not modified.");
365 return sd_bus_reply_method_return(m
, NULL
);
368 r
= bus_verify_polkit_async(
371 "org.freedesktop.locale1.set-locale",
380 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
382 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
383 free_and_replace(c
->locale
[p
], new_locale
[p
]);
385 r
= locale_write_data(c
, &settings
);
387 log_error_errno(r
, "Failed to set locale: %m");
388 return sd_bus_error_set_errnof(error
, r
, "Failed to set locale: %m");
391 (void) locale_update_system_manager(c
, sd_bus_message_get_bus(m
));
394 _cleanup_free_
char *line
;
396 line
= strv_join(settings
, ", ");
397 log_info("Changed locale to %s.", strnull(line
));
399 log_info("Changed locale to unset.");
401 (void) sd_bus_emit_properties_changed(
402 sd_bus_message_get_bus(m
),
403 "/org/freedesktop/locale1",
404 "org.freedesktop.locale1",
407 return sd_bus_reply_method_return(m
, NULL
);
410 static int method_set_vc_keyboard(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
411 Context
*c
= userdata
;
412 const char *keymap
, *keymap_toggle
;
413 int convert
, interactive
, r
;
418 r
= sd_bus_message_read(m
, "ssbb", &keymap
, &keymap_toggle
, &convert
, &interactive
);
422 keymap
= empty_to_null(keymap
);
423 keymap_toggle
= empty_to_null(keymap_toggle
);
425 r
= vconsole_read_data(c
, m
);
427 log_error_errno(r
, "Failed to read virtual console keymap data: %m");
428 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Failed to read virtual console keymap data");
431 if (streq_ptr(keymap
, c
->vc_keymap
) &&
432 streq_ptr(keymap_toggle
, c
->vc_keymap_toggle
))
433 return sd_bus_reply_method_return(m
, NULL
);
435 if ((keymap
&& (!filename_is_valid(keymap
) || !string_is_safe(keymap
))) ||
436 (keymap_toggle
&& (!filename_is_valid(keymap_toggle
) || !string_is_safe(keymap_toggle
))))
437 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Received invalid keymap data");
439 r
= bus_verify_polkit_async(
442 "org.freedesktop.locale1.set-keyboard",
451 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
453 if (free_and_strdup(&c
->vc_keymap
, keymap
) < 0 ||
454 free_and_strdup(&c
->vc_keymap_toggle
, keymap_toggle
) < 0)
457 r
= vconsole_write_data(c
);
459 log_error_errno(r
, "Failed to set virtual console keymap: %m");
460 return sd_bus_error_set_errnof(error
, r
, "Failed to set virtual console keymap: %m");
463 log_info("Changed virtual console keymap to '%s' toggle '%s'",
464 strempty(c
->vc_keymap
), strempty(c
->vc_keymap_toggle
));
466 r
= vconsole_reload(sd_bus_message_get_bus(m
));
468 log_error_errno(r
, "Failed to request keymap reload: %m");
470 (void) sd_bus_emit_properties_changed(
471 sd_bus_message_get_bus(m
),
472 "/org/freedesktop/locale1",
473 "org.freedesktop.locale1",
474 "VConsoleKeymap", "VConsoleKeymapToggle", NULL
);
477 r
= vconsole_convert_to_x11_and_emit(c
, m
);
479 log_error_errno(r
, "Failed to convert keymap data: %m");
482 return sd_bus_reply_method_return(m
, NULL
);
488 static void log_xkb(struct xkb_context
*ctx
, enum xkb_log_level lvl
, const char *format
, va_list args
) {
491 fmt
= strjoina("libxkbcommon: ", format
);
492 #pragma GCC diagnostic push
493 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
494 log_internalv(LOG_DEBUG
, 0, __FILE__
, __LINE__
, __func__
, fmt
, args
);
495 #pragma GCC diagnostic pop
498 #define LOAD_SYMBOL(symbol, dl, name) \
500 (symbol) = (typeof(symbol)) dlvsym((dl), (name), "V_0.5.0"); \
501 (symbol) ? 0 : -EOPNOTSUPP; \
504 static int verify_xkb_rmlvo(const char *model
, const char *layout
, const char *variant
, const char *options
) {
506 /* We dlopen() the library in order to make the dependency soft. The library (and what it pulls in) is huge
507 * after all, hence let's support XKB maps when the library is around, and refuse otherwise. The function
508 * pointers to the shared library are below: */
510 struct xkb_context
* (*symbol_xkb_context_new
)(enum xkb_context_flags flags
) = NULL
;
511 void (*symbol_xkb_context_unref
)(struct xkb_context
*context
) = NULL
;
512 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
;
513 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
;
514 void (*symbol_xkb_keymap_unref
)(struct xkb_keymap
*keymap
) = NULL
;
516 const struct xkb_rule_names rmlvo
= {
522 struct xkb_context
*ctx
= NULL
;
523 struct xkb_keymap
*km
= NULL
;
527 /* Compile keymap from RMLVO information to check out its validity */
529 dl
= dlopen("libxkbcommon.so.0", RTLD_LAZY
);
533 r
= LOAD_SYMBOL(symbol_xkb_context_new
, dl
, "xkb_context_new");
537 r
= LOAD_SYMBOL(symbol_xkb_context_unref
, dl
, "xkb_context_unref");
541 r
= LOAD_SYMBOL(symbol_xkb_context_set_log_fn
, dl
, "xkb_context_set_log_fn");
545 r
= LOAD_SYMBOL(symbol_xkb_keymap_new_from_names
, dl
, "xkb_keymap_new_from_names");
549 r
= LOAD_SYMBOL(symbol_xkb_keymap_unref
, dl
, "xkb_keymap_unref");
553 ctx
= symbol_xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES
);
559 symbol_xkb_context_set_log_fn(ctx
, log_xkb
);
561 km
= symbol_xkb_keymap_new_from_names(ctx
, &rmlvo
, XKB_KEYMAP_COMPILE_NO_FLAGS
);
570 if (symbol_xkb_keymap_unref
&& km
)
571 symbol_xkb_keymap_unref(km
);
573 if (symbol_xkb_context_unref
&& ctx
)
574 symbol_xkb_context_unref(ctx
);
582 static int verify_xkb_rmlvo(const char *model
, const char *layout
, const char *variant
, const char *options
) {
588 static int method_set_x11_keyboard(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
589 Context
*c
= userdata
;
590 const char *layout
, *model
, *variant
, *options
;
591 int convert
, interactive
, r
;
596 r
= sd_bus_message_read(m
, "ssssbb", &layout
, &model
, &variant
, &options
, &convert
, &interactive
);
600 layout
= empty_to_null(layout
);
601 model
= empty_to_null(model
);
602 variant
= empty_to_null(variant
);
603 options
= empty_to_null(options
);
605 r
= x11_read_data(c
, m
);
607 log_error_errno(r
, "Failed to read x11 keyboard layout data: %m");
608 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Failed to read x11 keyboard layout data");
611 if (streq_ptr(layout
, c
->x11_layout
) &&
612 streq_ptr(model
, c
->x11_model
) &&
613 streq_ptr(variant
, c
->x11_variant
) &&
614 streq_ptr(options
, c
->x11_options
))
615 return sd_bus_reply_method_return(m
, NULL
);
617 if ((layout
&& !string_is_safe(layout
)) ||
618 (model
&& !string_is_safe(model
)) ||
619 (variant
&& !string_is_safe(variant
)) ||
620 (options
&& !string_is_safe(options
)))
621 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Received invalid keyboard data");
623 r
= verify_xkb_rmlvo(model
, layout
, variant
, options
);
625 log_error_errno(r
, "Cannot compile XKB keymap for new x11 keyboard layout ('%s' / '%s' / '%s' / '%s'): %m",
626 strempty(model
), strempty(layout
), strempty(variant
), strempty(options
));
628 if (r
== -EOPNOTSUPP
)
629 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Local keyboard configuration not supported on this system.");
631 return sd_bus_error_set(error
, SD_BUS_ERROR_INVALID_ARGS
, "Specified keymap cannot be compiled, refusing as invalid.");
634 r
= bus_verify_polkit_async(
637 "org.freedesktop.locale1.set-keyboard",
646 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
648 if (free_and_strdup(&c
->x11_layout
, layout
) < 0 ||
649 free_and_strdup(&c
->x11_model
, model
) < 0 ||
650 free_and_strdup(&c
->x11_variant
, variant
) < 0 ||
651 free_and_strdup(&c
->x11_options
, options
) < 0)
654 r
= x11_write_data(c
);
656 log_error_errno(r
, "Failed to set X11 keyboard layout: %m");
657 return sd_bus_error_set_errnof(error
, r
, "Failed to set X11 keyboard layout: %m");
660 log_info("Changed X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
661 strempty(c
->x11_layout
),
662 strempty(c
->x11_model
),
663 strempty(c
->x11_variant
),
664 strempty(c
->x11_options
));
666 (void) sd_bus_emit_properties_changed(
667 sd_bus_message_get_bus(m
),
668 "/org/freedesktop/locale1",
669 "org.freedesktop.locale1",
670 "X11Layout", "X11Model", "X11Variant", "X11Options", NULL
);
673 r
= x11_convert_to_vconsole_and_emit(c
, m
);
675 log_error_errno(r
, "Failed to convert keymap data: %m");
678 return sd_bus_reply_method_return(m
, NULL
);
681 static const sd_bus_vtable locale_vtable
[] = {
682 SD_BUS_VTABLE_START(0),
683 SD_BUS_PROPERTY("Locale", "as", property_get_locale
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
684 SD_BUS_PROPERTY("X11Layout", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
685 SD_BUS_PROPERTY("X11Model", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
686 SD_BUS_PROPERTY("X11Variant", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
687 SD_BUS_PROPERTY("X11Options", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
688 SD_BUS_PROPERTY("VConsoleKeymap", "s", property_get_vconsole
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
689 SD_BUS_PROPERTY("VConsoleKeymapToggle", "s", property_get_vconsole
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
690 SD_BUS_METHOD("SetLocale", "asb", NULL
, method_set_locale
, SD_BUS_VTABLE_UNPRIVILEGED
),
691 SD_BUS_METHOD("SetVConsoleKeyboard", "ssbb", NULL
, method_set_vc_keyboard
, SD_BUS_VTABLE_UNPRIVILEGED
),
692 SD_BUS_METHOD("SetX11Keyboard", "ssssbb", NULL
, method_set_x11_keyboard
, SD_BUS_VTABLE_UNPRIVILEGED
),
696 static int connect_bus(Context
*c
, sd_event
*event
, sd_bus
**_bus
) {
697 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
704 r
= sd_bus_default_system(&bus
);
706 return log_error_errno(r
, "Failed to get system bus connection: %m");
708 r
= sd_bus_add_object_vtable(bus
, NULL
, "/org/freedesktop/locale1", "org.freedesktop.locale1", locale_vtable
, c
);
710 return log_error_errno(r
, "Failed to register object: %m");
712 r
= sd_bus_request_name_async(bus
, NULL
, "org.freedesktop.locale1", 0, NULL
, NULL
);
714 return log_error_errno(r
, "Failed to request name: %m");
716 r
= sd_bus_attach_event(bus
, event
, 0);
718 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
720 *_bus
= TAKE_PTR(bus
);
725 int main(int argc
, char *argv
[]) {
726 _cleanup_(context_free
) Context context
= {
727 .locale_mtime
= USEC_INFINITY
,
728 .vc_mtime
= USEC_INFINITY
,
729 .x11_mtime
= USEC_INFINITY
,
731 _cleanup_(sd_event_unrefp
) sd_event
*event
= NULL
;
732 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
735 log_set_target(LOG_TARGET_AUTO
);
736 log_parse_environment();
743 log_error("This program takes no arguments.");
748 r
= sd_event_default(&event
);
750 log_error_errno(r
, "Failed to allocate event loop: %m");
754 sd_event_set_watchdog(event
, true);
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
;