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
] = {}, **i
;
271 _cleanup_(locale_free
) _unused_
char **dummy
= new_locale
;
272 bool modified
= false;
273 int interactive
, p
, r
;
278 r
= bus_message_read_strv_extend(m
, &l
);
282 r
= sd_bus_message_read_basic(m
, 'b', &interactive
);
286 /* If single locale without variable name is provided, then we assume it is LANG=. */
287 if (strv_length(l
) == 1 && !strchr(*l
, '=')) {
288 if (!locale_is_valid(*l
))
289 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid Locale data.");
291 new_locale
[VARIABLE_LANG
] = strdup(*l
);
292 if (!new_locale
[VARIABLE_LANG
])
298 /* Check whether a variable is valid */
302 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++) {
306 name
= locale_variable_to_string(p
);
310 if (startswith(*i
, name
) &&
312 locale_is_valid((*i
) + k
+ 1)) {
315 new_locale
[p
] = strdup((*i
) + k
+ 1);
324 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid Locale data.");
327 /* If LANG was specified, but not LANGUAGE, check if we should
328 * set it based on the language fallback table. */
329 if (!isempty(new_locale
[VARIABLE_LANG
]) &&
330 isempty(new_locale
[VARIABLE_LANGUAGE
])) {
331 _cleanup_free_
char *language
= NULL
;
333 (void) find_language_fallback(new_locale
[VARIABLE_LANG
], &language
);
335 log_debug("Converted LANG=%s to LANGUAGE=%s", new_locale
[VARIABLE_LANG
], language
);
336 free_and_replace(new_locale
[VARIABLE_LANGUAGE
], language
);
340 r
= locale_read_data(c
, m
);
342 log_error_errno(r
, "Failed to read locale data: %m");
343 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Failed to read locale data");
346 /* Merge with the current settings */
347 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
348 if (!isempty(c
->locale
[p
]) && isempty(new_locale
[p
])) {
349 new_locale
[p
] = strdup(c
->locale
[p
]);
354 locale_simplify(new_locale
);
356 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
357 if (!streq_ptr(c
->locale
[p
], new_locale
[p
])) {
363 log_debug("Locale settings were not modified.");
364 return sd_bus_reply_method_return(m
, NULL
);
367 r
= bus_verify_polkit_async(
370 "org.freedesktop.locale1.set-locale",
379 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
381 for (p
= 0; p
< _VARIABLE_LC_MAX
; p
++)
382 free_and_replace(c
->locale
[p
], new_locale
[p
]);
384 r
= locale_write_data(c
, &settings
);
386 log_error_errno(r
, "Failed to set locale: %m");
387 return sd_bus_error_set_errnof(error
, r
, "Failed to set locale: %m");
390 (void) locale_update_system_manager(c
, sd_bus_message_get_bus(m
));
393 _cleanup_free_
char *line
;
395 line
= strv_join(settings
, ", ");
396 log_info("Changed locale to %s.", strnull(line
));
398 log_info("Changed locale to unset.");
400 (void) sd_bus_emit_properties_changed(
401 sd_bus_message_get_bus(m
),
402 "/org/freedesktop/locale1",
403 "org.freedesktop.locale1",
406 return sd_bus_reply_method_return(m
, NULL
);
409 static int method_set_vc_keyboard(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
410 Context
*c
= userdata
;
411 const char *keymap
, *keymap_toggle
;
412 int convert
, interactive
, r
;
417 r
= sd_bus_message_read(m
, "ssbb", &keymap
, &keymap_toggle
, &convert
, &interactive
);
421 keymap
= empty_to_null(keymap
);
422 keymap_toggle
= empty_to_null(keymap_toggle
);
424 r
= vconsole_read_data(c
, m
);
426 log_error_errno(r
, "Failed to read virtual console keymap data: %m");
427 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Failed to read virtual console keymap data");
430 if (streq_ptr(keymap
, c
->vc_keymap
) &&
431 streq_ptr(keymap_toggle
, c
->vc_keymap_toggle
))
432 return sd_bus_reply_method_return(m
, NULL
);
434 if ((keymap
&& (!filename_is_valid(keymap
) || !string_is_safe(keymap
))) ||
435 (keymap_toggle
&& (!filename_is_valid(keymap_toggle
) || !string_is_safe(keymap_toggle
))))
436 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Received invalid keymap data");
438 r
= bus_verify_polkit_async(
441 "org.freedesktop.locale1.set-keyboard",
450 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
452 if (free_and_strdup(&c
->vc_keymap
, keymap
) < 0 ||
453 free_and_strdup(&c
->vc_keymap_toggle
, keymap_toggle
) < 0)
456 r
= vconsole_write_data(c
);
458 log_error_errno(r
, "Failed to set virtual console keymap: %m");
459 return sd_bus_error_set_errnof(error
, r
, "Failed to set virtual console keymap: %m");
462 log_info("Changed virtual console keymap to '%s' toggle '%s'",
463 strempty(c
->vc_keymap
), strempty(c
->vc_keymap_toggle
));
465 r
= vconsole_reload(sd_bus_message_get_bus(m
));
467 log_error_errno(r
, "Failed to request keymap reload: %m");
469 (void) sd_bus_emit_properties_changed(
470 sd_bus_message_get_bus(m
),
471 "/org/freedesktop/locale1",
472 "org.freedesktop.locale1",
473 "VConsoleKeymap", "VConsoleKeymapToggle", NULL
);
476 r
= vconsole_convert_to_x11_and_emit(c
, m
);
478 log_error_errno(r
, "Failed to convert keymap data: %m");
481 return sd_bus_reply_method_return(m
, NULL
);
487 static void log_xkb(struct xkb_context
*ctx
, enum xkb_log_level lvl
, const char *format
, va_list args
) {
490 fmt
= strjoina("libxkbcommon: ", format
);
491 #pragma GCC diagnostic push
492 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
493 log_internalv(LOG_DEBUG
, 0, __FILE__
, __LINE__
, __func__
, fmt
, args
);
494 #pragma GCC diagnostic pop
497 #define LOAD_SYMBOL(symbol, dl, name) \
499 (symbol) = (typeof(symbol)) dlvsym((dl), (name), "V_0.5.0"); \
500 (symbol) ? 0 : -EOPNOTSUPP; \
503 static int verify_xkb_rmlvo(const char *model
, const char *layout
, const char *variant
, const char *options
) {
505 /* We dlopen() the library in order to make the dependency soft. The library (and what it pulls in) is huge
506 * after all, hence let's support XKB maps when the library is around, and refuse otherwise. The function
507 * pointers to the shared library are below: */
509 struct xkb_context
* (*symbol_xkb_context_new
)(enum xkb_context_flags flags
) = NULL
;
510 void (*symbol_xkb_context_unref
)(struct xkb_context
*context
) = NULL
;
511 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
;
512 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
;
513 void (*symbol_xkb_keymap_unref
)(struct xkb_keymap
*keymap
) = NULL
;
515 const struct xkb_rule_names rmlvo
= {
521 struct xkb_context
*ctx
= NULL
;
522 struct xkb_keymap
*km
= NULL
;
526 /* Compile keymap from RMLVO information to check out its validity */
528 dl
= dlopen("libxkbcommon.so.0", RTLD_LAZY
);
532 r
= LOAD_SYMBOL(symbol_xkb_context_new
, dl
, "xkb_context_new");
536 r
= LOAD_SYMBOL(symbol_xkb_context_unref
, dl
, "xkb_context_unref");
540 r
= LOAD_SYMBOL(symbol_xkb_context_set_log_fn
, dl
, "xkb_context_set_log_fn");
544 r
= LOAD_SYMBOL(symbol_xkb_keymap_new_from_names
, dl
, "xkb_keymap_new_from_names");
548 r
= LOAD_SYMBOL(symbol_xkb_keymap_unref
, dl
, "xkb_keymap_unref");
552 ctx
= symbol_xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES
);
558 symbol_xkb_context_set_log_fn(ctx
, log_xkb
);
560 km
= symbol_xkb_keymap_new_from_names(ctx
, &rmlvo
, XKB_KEYMAP_COMPILE_NO_FLAGS
);
569 if (symbol_xkb_keymap_unref
&& km
)
570 symbol_xkb_keymap_unref(km
);
572 if (symbol_xkb_context_unref
&& ctx
)
573 symbol_xkb_context_unref(ctx
);
581 static int verify_xkb_rmlvo(const char *model
, const char *layout
, const char *variant
, const char *options
) {
587 static int method_set_x11_keyboard(sd_bus_message
*m
, void *userdata
, sd_bus_error
*error
) {
588 Context
*c
= userdata
;
589 const char *layout
, *model
, *variant
, *options
;
590 int convert
, interactive
, r
;
595 r
= sd_bus_message_read(m
, "ssssbb", &layout
, &model
, &variant
, &options
, &convert
, &interactive
);
599 layout
= empty_to_null(layout
);
600 model
= empty_to_null(model
);
601 variant
= empty_to_null(variant
);
602 options
= empty_to_null(options
);
604 r
= x11_read_data(c
, m
);
606 log_error_errno(r
, "Failed to read x11 keyboard layout data: %m");
607 return sd_bus_error_setf(error
, SD_BUS_ERROR_FAILED
, "Failed to read x11 keyboard layout data");
610 if (streq_ptr(layout
, c
->x11_layout
) &&
611 streq_ptr(model
, c
->x11_model
) &&
612 streq_ptr(variant
, c
->x11_variant
) &&
613 streq_ptr(options
, c
->x11_options
))
614 return sd_bus_reply_method_return(m
, NULL
);
616 if ((layout
&& !string_is_safe(layout
)) ||
617 (model
&& !string_is_safe(model
)) ||
618 (variant
&& !string_is_safe(variant
)) ||
619 (options
&& !string_is_safe(options
)))
620 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Received invalid keyboard data");
622 r
= verify_xkb_rmlvo(model
, layout
, variant
, options
);
624 log_error_errno(r
, "Cannot compile XKB keymap for new x11 keyboard layout ('%s' / '%s' / '%s' / '%s'): %m",
625 strempty(model
), strempty(layout
), strempty(variant
), strempty(options
));
627 if (r
== -EOPNOTSUPP
)
628 return sd_bus_error_setf(error
, SD_BUS_ERROR_NOT_SUPPORTED
, "Local keyboard configuration not supported on this system.");
630 return sd_bus_error_set(error
, SD_BUS_ERROR_INVALID_ARGS
, "Specified keymap cannot be compiled, refusing as invalid.");
633 r
= bus_verify_polkit_async(
636 "org.freedesktop.locale1.set-keyboard",
645 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
647 if (free_and_strdup(&c
->x11_layout
, layout
) < 0 ||
648 free_and_strdup(&c
->x11_model
, model
) < 0 ||
649 free_and_strdup(&c
->x11_variant
, variant
) < 0 ||
650 free_and_strdup(&c
->x11_options
, options
) < 0)
653 r
= x11_write_data(c
);
655 log_error_errno(r
, "Failed to set X11 keyboard layout: %m");
656 return sd_bus_error_set_errnof(error
, r
, "Failed to set X11 keyboard layout: %m");
659 log_info("Changed X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
660 strempty(c
->x11_layout
),
661 strempty(c
->x11_model
),
662 strempty(c
->x11_variant
),
663 strempty(c
->x11_options
));
665 (void) sd_bus_emit_properties_changed(
666 sd_bus_message_get_bus(m
),
667 "/org/freedesktop/locale1",
668 "org.freedesktop.locale1",
669 "X11Layout", "X11Model", "X11Variant", "X11Options", NULL
);
672 r
= x11_convert_to_vconsole_and_emit(c
, m
);
674 log_error_errno(r
, "Failed to convert keymap data: %m");
677 return sd_bus_reply_method_return(m
, NULL
);
680 static const sd_bus_vtable locale_vtable
[] = {
681 SD_BUS_VTABLE_START(0),
682 SD_BUS_PROPERTY("Locale", "as", property_get_locale
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
683 SD_BUS_PROPERTY("X11Layout", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
684 SD_BUS_PROPERTY("X11Model", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
685 SD_BUS_PROPERTY("X11Variant", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
686 SD_BUS_PROPERTY("X11Options", "s", property_get_xkb
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
687 SD_BUS_PROPERTY("VConsoleKeymap", "s", property_get_vconsole
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
688 SD_BUS_PROPERTY("VConsoleKeymapToggle", "s", property_get_vconsole
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
689 SD_BUS_METHOD("SetLocale", "asb", NULL
, method_set_locale
, SD_BUS_VTABLE_UNPRIVILEGED
),
690 SD_BUS_METHOD("SetVConsoleKeyboard", "ssbb", NULL
, method_set_vc_keyboard
, SD_BUS_VTABLE_UNPRIVILEGED
),
691 SD_BUS_METHOD("SetX11Keyboard", "ssssbb", NULL
, method_set_x11_keyboard
, SD_BUS_VTABLE_UNPRIVILEGED
),
695 static int connect_bus(Context
*c
, sd_event
*event
, sd_bus
**_bus
) {
696 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
703 r
= sd_bus_default_system(&bus
);
705 return log_error_errno(r
, "Failed to get system bus connection: %m");
707 r
= sd_bus_add_object_vtable(bus
, NULL
, "/org/freedesktop/locale1", "org.freedesktop.locale1", locale_vtable
, c
);
709 return log_error_errno(r
, "Failed to register object: %m");
711 r
= sd_bus_request_name_async(bus
, NULL
, "org.freedesktop.locale1", 0, NULL
, NULL
);
713 return log_error_errno(r
, "Failed to request name: %m");
715 r
= sd_bus_attach_event(bus
, event
, 0);
717 return log_error_errno(r
, "Failed to attach bus to event loop: %m");
719 *_bus
= TAKE_PTR(bus
);
724 int main(int argc
, char *argv
[]) {
725 _cleanup_(context_free
) Context context
= {
726 .locale_mtime
= USEC_INFINITY
,
727 .vc_mtime
= USEC_INFINITY
,
728 .x11_mtime
= USEC_INFINITY
,
730 _cleanup_(sd_event_unrefp
) sd_event
*event
= NULL
;
731 _cleanup_(sd_bus_flush_close_unrefp
) sd_bus
*bus
= NULL
;
734 log_set_target(LOG_TARGET_AUTO
);
735 log_parse_environment();
742 log_error("This program takes no arguments.");
747 r
= sd_event_default(&event
);
749 log_error_errno(r
, "Failed to allocate event loop: %m");
753 sd_event_set_watchdog(event
, true);
755 r
= connect_bus(&context
, event
, &bus
);
759 r
= bus_event_loop_with_idle(event
, bus
, "org.freedesktop.locale1", DEFAULT_EXIT_USEC
, NULL
, NULL
);
761 log_error_errno(r
, "Failed to run event loop: %m");
764 bus_verify_polkit_async_registry_free(polkit_registry
);
766 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;