diff options
Diffstat (limited to '')
| -rw-r--r-- | src/locale/localed.c | 680 |
1 files changed, 680 insertions, 0 deletions
diff --git a/src/locale/localed.c b/src/locale/localed.c new file mode 100644 index 0000000..5d96237 --- /dev/null +++ b/src/locale/localed.c @@ -0,0 +1,680 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <errno.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> + +#include "sd-bus.h" + +#include "alloc-util.h" +#include "bus-error.h" +#include "bus-locator.h" +#include "bus-log-control-api.h" +#include "bus-message.h" +#include "bus-polkit.h" +#include "bus-unit-util.h" +#include "constants.h" +#include "kbd-util.h" +#include "localed-util.h" +#include "macro.h" +#include "main-func.h" +#include "missing_capability.h" +#include "path-util.h" +#include "selinux-util.h" +#include "service-util.h" +#include "signal-util.h" +#include "string-util.h" +#include "strv.h" +#include "user-util.h" + +static int vconsole_reload(sd_bus *bus) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + int r; + + assert(bus); + + r = bus_call_method(bus, bus_systemd_mgr, "RestartUnit", &error, NULL, "ss", "systemd-vconsole-setup.service", "replace"); + if (r < 0) + return log_error_errno(r, "Failed to issue method call: %s", bus_error_message(&error, r)); + return 0; +} + +static int property_get_locale( + sd_bus *bus, + const char *path, + const char *interface, + const char *property, + sd_bus_message *reply, + void *userdata, + sd_bus_error *error) { + + Context *c = ASSERT_PTR(userdata); + _cleanup_strv_free_ char **l = NULL; + int r; + + r = locale_read_data(c, reply); + if (r < 0) + return r; + + r = locale_context_build_env(&c->locale_context, &l, NULL); + if (r < 0) + return r; + + return sd_bus_message_append_strv(reply, l); +} + +static int property_get_vconsole( + sd_bus *bus, + const char *path, + const char *interface, + const char *property, + sd_bus_message *reply, + void *userdata, + sd_bus_error *error) { + + Context *c = ASSERT_PTR(userdata); + int r; + + assert(property); + + r = vconsole_read_data(c, reply); + if (r < 0) + return r; + + if (streq(property, "VConsoleKeymap")) + return sd_bus_message_append_basic(reply, 's', c->vc.keymap); + if (streq(property, "VConsoleKeymapToggle")) + return sd_bus_message_append_basic(reply, 's', c->vc.toggle); + + return -EINVAL; +} + +static int property_get_xkb( + sd_bus *bus, + const char *path, + const char *interface, + const char *property, + sd_bus_message *reply, + void *userdata, + sd_bus_error *error) { + + Context *c = ASSERT_PTR(userdata); + const X11Context *xc; + int r; + + assert(property); + + r = vconsole_read_data(c, reply); + if (r < 0) + return r; + + r = x11_read_data(c, reply); + if (r < 0) + return r; + + xc = context_get_x11_context(c); + + if (streq(property, "X11Layout")) + return sd_bus_message_append_basic(reply, 's', xc->layout); + if (streq(property, "X11Model")) + return sd_bus_message_append_basic(reply, 's', xc->model); + if (streq(property, "X11Variant")) + return sd_bus_message_append_basic(reply, 's', xc->variant); + if (streq(property, "X11Options")) + return sd_bus_message_append_basic(reply, 's', xc->options); + + return -EINVAL; +} + +static int process_locale_list_item( + const char *assignment, + char *new_locale[static _VARIABLE_LC_MAX], + bool use_localegen, + sd_bus_error *error) { + + assert(assignment); + assert(new_locale); + + for (LocaleVariable p = 0; p < _VARIABLE_LC_MAX; p++) { + const char *name, *e; + + assert_se(name = locale_variable_to_string(p)); + + e = startswith(assignment, name); + if (!e) + continue; + + if (*e != '=') + continue; + + e++; + + if (!locale_is_valid(e)) + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Locale %s is not valid, refusing.", e); + if (!use_localegen && locale_is_installed(e) <= 0) + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Locale %s not installed, refusing.", e); + if (new_locale[p]) + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Locale variable %s set twice, refusing.", name); + + new_locale[p] = strdup(e); + if (!new_locale[p]) + return -ENOMEM; + + return 0; + } + + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Locale assignment %s not valid, refusing.", assignment); +} + +static int locale_gen_process_locale(char *new_locale[static _VARIABLE_LC_MAX], sd_bus_error *error) { + int r; + + assert(new_locale); + + for (LocaleVariable p = 0; p < _VARIABLE_LC_MAX; p++) { + if (p == VARIABLE_LANGUAGE) + continue; + if (isempty(new_locale[p])) + continue; + if (locale_is_installed(new_locale[p])) + continue; + + r = locale_gen_enable_locale(new_locale[p]); + if (r == -ENOEXEC) { + log_error_errno(r, "Refused to enable locale for generation: %m"); + return sd_bus_error_setf(error, + SD_BUS_ERROR_INVALID_ARGS, + "Specified locale is not installed and non-UTF-8 locale will not be auto-generated: %s", + new_locale[p]); + } + if (r == -EINVAL) { + log_error_errno(r, "Failed to enable invalid locale %s for generation.", new_locale[p]); + return sd_bus_error_setf(error, + SD_BUS_ERROR_INVALID_ARGS, + "Cannot enable locale generation for invalid locale: %s", + new_locale[p]); + } + if (r < 0) { + log_error_errno(r, "Failed to enable locale for generation: %m"); + return sd_bus_error_set_errnof(error, r, "Failed to enable locale generation: %m"); + } + + r = locale_gen_run(); + if (r < 0) { + log_error_errno(r, "Failed to generate locale: %m"); + return sd_bus_error_set_errnof(error, r, "Failed to generate locale: %m"); + } + } + + return 0; +} + +static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *error) { + _cleanup_(locale_variables_freep) char *new_locale[_VARIABLE_LC_MAX] = {}; + _cleanup_strv_free_ char **l = NULL, **l_set = NULL, **l_unset = NULL; + Context *c = ASSERT_PTR(userdata); + int interactive, r; + bool use_localegen; + + assert(m); + + r = sd_bus_message_read_strv(m, &l); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read_basic(m, 'b', &interactive); + if (r < 0) + return bus_log_parse_error(r); + + use_localegen = locale_gen_check_available(); + + /* If single locale without variable name is provided, then we assume it is LANG=. */ + if (strv_length(l) == 1 && !strchr(l[0], '=')) { + if (!locale_is_valid(l[0])) + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid locale specification: %s", l[0]); + if (!use_localegen && locale_is_installed(l[0]) <= 0) + return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified locale is not installed: %s", l[0]); + + new_locale[VARIABLE_LANG] = strdup(l[0]); + if (!new_locale[VARIABLE_LANG]) + return log_oom(); + + l = strv_free(l); + } + + /* Check whether a variable is valid */ + STRV_FOREACH(i, l) { + r = process_locale_list_item(*i, new_locale, use_localegen, error); + if (r < 0) + return r; + } + + /* If LANG was specified, but not LANGUAGE, check if we should + * set it based on the language fallback table. */ + if (!isempty(new_locale[VARIABLE_LANG]) && + isempty(new_locale[VARIABLE_LANGUAGE])) { + _cleanup_free_ char *language = NULL; + + (void) find_language_fallback(new_locale[VARIABLE_LANG], &language); + if (language) { + log_debug("Converted LANG=%s to LANGUAGE=%s", new_locale[VARIABLE_LANG], language); + free_and_replace(new_locale[VARIABLE_LANGUAGE], language); + } + } + + r = locale_read_data(c, m); + if (r < 0) { + log_error_errno(r, "Failed to read locale data: %m"); + return sd_bus_error_set(error, SD_BUS_ERROR_FAILED, "Failed to read locale data"); + } + + /* Merge with the current settings */ + r = locale_context_merge(&c->locale_context, new_locale); + if (r < 0) + return log_oom(); + + locale_variables_simplify(new_locale); + + if (locale_context_equal(&c->locale_context, new_locale)) { + log_debug("Locale settings were not modified."); + return sd_bus_reply_method_return(m, NULL); + } + + r = bus_verify_polkit_async( + m, + CAP_SYS_ADMIN, + "org.freedesktop.locale1.set-locale", + NULL, + interactive, + UID_INVALID, + &c->polkit_registry, + error); + if (r < 0) + return r; + if (r == 0) + return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ + + /* Generate locale in case it is missing and the system is using locale-gen */ + if (use_localegen) { + r = locale_gen_process_locale(new_locale, error); + if (r < 0) + return r; + } + + locale_context_take(&c->locale_context, new_locale); + + /* Write locale configuration */ + r = locale_context_save(&c->locale_context, &l_set, &l_unset); + if (r < 0) { + log_error_errno(r, "Failed to set locale: %m"); + return sd_bus_error_set_errnof(error, r, "Failed to set locale: %m"); + } + + /* Since we just updated the locale configuration file, ask the system manager to read it again to + * update its default locale settings. It's important to not use UnsetAndSetEnvironment or a similar + * method because in this case unsetting variables means restoring them to PID1 default values, which + * may be outdated, since locale.conf has just changed and PID1 hasn't read it */ + (void) bus_service_manager_reload(sd_bus_message_get_bus(m)); + + if (!strv_isempty(l_set)) { + _cleanup_free_ char *line = NULL; + + line = strv_join(l_set, ", "); + log_info("Changed locale to %s.", strnull(line)); + } else + log_info("Changed locale to unset."); + + (void) sd_bus_emit_properties_changed( + sd_bus_message_get_bus(m), + "/org/freedesktop/locale1", + "org.freedesktop.locale1", + "Locale", NULL); + + return sd_bus_reply_method_return(m, NULL); +} + +static int method_set_vc_keyboard(sd_bus_message *m, void *userdata, sd_bus_error *error) { + _cleanup_(x11_context_clear) X11Context converted = {}; + Context *c = ASSERT_PTR(userdata); + int convert, interactive, r; + bool x_needs_update; + VCContext in; + + assert(m); + + r = sd_bus_message_read(m, "ssbb", &in.keymap, &in.toggle, &convert, &interactive); + if (r < 0) + return bus_log_parse_error(r); + + vc_context_empty_to_null(&in); + + r = vc_context_verify_and_warn(&in, LOG_ERR, error); + if (r < 0) + return r; + + r = vconsole_read_data(c, m); + if (r < 0) { + log_error_errno(r, "Failed to read virtual console keymap data: %m"); + return sd_bus_error_set_errnof(error, r, "Failed to read virtual console keymap data: %m"); + } + + r = x11_read_data(c, m); + if (r < 0) { + log_error_errno(r, "Failed to read X11 keyboard layout data: %m"); + return sd_bus_error_set_errnof(error, r, "Failed to read X11 keyboard layout data: %m"); + } + + if (convert) { + r = vconsole_convert_to_x11(&in, &converted); + if (r < 0) { + log_error_errno(r, "Failed to convert keymap data: %m"); + return sd_bus_error_set_errnof(error, r, "Failed to convert keymap data: %m"); + } + + if (x11_context_isempty(&converted)) + log_notice("No conversion found for virtual console keymap \"%s\".", strempty(in.keymap)); + else + log_info("The virtual console keymap '%s' is converted to X11 keyboard layout '%s' model '%s' variant '%s' options '%s'", + in.keymap, strempty(converted.layout), strempty(converted.model), strempty(converted.variant), strempty(converted.options)); + + /* save the result of conversion to emit changed properties later. */ + x_needs_update = !x11_context_equal(&c->x11_from_vc, &converted) || !x11_context_equal(&c->x11_from_xorg, &converted); + } else + x_needs_update = !x11_context_equal(&c->x11_from_vc, &c->x11_from_xorg); + + if (vc_context_equal(&c->vc, &in) && !x_needs_update) + return sd_bus_reply_method_return(m, NULL); + + r = bus_verify_polkit_async( + m, + CAP_SYS_ADMIN, + "org.freedesktop.locale1.set-keyboard", + NULL, + interactive, + UID_INVALID, + &c->polkit_registry, + error); + if (r < 0) + return r; + if (r == 0) + return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ + + r = vc_context_copy(&c->vc, &in); + if (r < 0) + return log_oom(); + + if (x_needs_update) { + if (convert) { + r = x11_context_copy(&c->x11_from_vc, &converted); + if (r < 0) + return log_oom(); + x11_context_replace(&c->x11_from_xorg, &converted); + } else { + const X11Context *xc = context_get_x11_context(c); + + /* Even if the conversion is not requested, sync the two X11 contexts. */ + r = x11_context_copy(&c->x11_from_vc, xc); + if (r < 0) + return log_oom(); + + r = x11_context_copy(&c->x11_from_xorg, xc); + if (r < 0) + return log_oom(); + } + } + + r = vconsole_write_data(c); + if (r < 0) + log_warning_errno(r, "Failed to write virtual console keymap, ignoring: %m"); + + if (x_needs_update) { + r = x11_write_data(c); + if (r < 0) + log_warning_errno(r, "Failed to write X11 keyboard layout, ignoring: %m"); + } + + log_info("Changed virtual console keymap to '%s' toggle '%s'", + strempty(c->vc.keymap), strempty(c->vc.toggle)); + + (void) vconsole_reload(sd_bus_message_get_bus(m)); + + (void) sd_bus_emit_properties_changed( + sd_bus_message_get_bus(m), + "/org/freedesktop/locale1", + "org.freedesktop.locale1", + "VConsoleKeymap", "VConsoleKeymapToggle", + x_needs_update ? "X11Layout" : NULL, + x_needs_update ? "X11Model" : NULL, + x_needs_update ? "X11Variant" : NULL, + x_needs_update ? "X11Options" : NULL, + NULL); + + return sd_bus_reply_method_return(m, NULL); +} + +static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_error *error) { + _cleanup_(vc_context_clear) VCContext converted = {}; + Context *c = ASSERT_PTR(userdata); + int convert, interactive, r; + X11Context in; + + assert(m); + + r = sd_bus_message_read(m, "ssssbb", &in.layout, &in.model, &in.variant, &in.options, &convert, &interactive); + if (r < 0) + return bus_log_parse_error(r); + + x11_context_empty_to_null(&in); + + r = x11_context_verify_and_warn(&in, LOG_ERR, error); + if (r < 0) + return r; + + r = vconsole_read_data(c, m); + if (r < 0) { + log_error_errno(r, "Failed to read virtual console keymap data: %m"); + return sd_bus_error_set_errnof(error, r, "Failed to read virtual console keymap data: %m"); + } + + r = x11_read_data(c, m); + if (r < 0) { + log_error_errno(r, "Failed to read x11 keyboard layout data: %m"); + return sd_bus_error_set(error, SD_BUS_ERROR_FAILED, "Failed to read x11 keyboard layout data"); + } + + if (convert) { + r = x11_convert_to_vconsole(&in, &converted); + if (r < 0) { + log_error_errno(r, "Failed to convert keymap data: %m"); + return sd_bus_error_set_errnof(error, r, "Failed to convert keymap data: %m"); + } + + if (vc_context_isempty(&converted)) + /* We search for layout-variant match first, but then we also look + * for anything which matches just the layout. So it's accurate to say + * that we couldn't find anything which matches the layout. */ + log_notice("No conversion to virtual console map found for \"%s\".", strempty(in.layout)); + else + log_info("The X11 keyboard layout '%s' is converted to virtual console keymap '%s'", + in.layout, converted.keymap); + + /* save the result of conversion to emit changed properties later. */ + convert = !vc_context_equal(&c->vc, &converted); + } + + if (x11_context_equal(&c->x11_from_vc, &in) && x11_context_equal(&c->x11_from_xorg, &in) && !convert) + return sd_bus_reply_method_return(m, NULL); + + r = bus_verify_polkit_async( + m, + CAP_SYS_ADMIN, + "org.freedesktop.locale1.set-keyboard", + NULL, + interactive, + UID_INVALID, + &c->polkit_registry, + error); + if (r < 0) + return r; + if (r == 0) + return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ + + r = x11_context_copy(&c->x11_from_vc, &in); + if (r < 0) + return log_oom(); + + r = x11_context_copy(&c->x11_from_xorg, &in); + if (r < 0) + return log_oom(); + + if (convert) + vc_context_replace(&c->vc, &converted); + + r = vconsole_write_data(c); + if (r < 0) + log_warning_errno(r, "Failed to update vconsole.conf, ignoring: %m"); + + r = x11_write_data(c); + if (r < 0) + log_warning_errno(r, "Failed to write X11 keyboard layout, ignoring: %m"); + + log_info("Changed X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'", + strempty(in.layout), + strempty(in.model), + strempty(in.variant), + strempty(in.options)); + + (void) sd_bus_emit_properties_changed( + sd_bus_message_get_bus(m), + "/org/freedesktop/locale1", + "org.freedesktop.locale1", + "X11Layout", "X11Model", "X11Variant", "X11Options", + convert ? "VConsoleKeymap" : NULL, + convert ? "VConsoleKeymapToggle" : NULL, + NULL); + + if (convert) + (void) vconsole_reload(sd_bus_message_get_bus(m)); + + return sd_bus_reply_method_return(m, NULL); +} + +static const sd_bus_vtable locale_vtable[] = { + SD_BUS_VTABLE_START(0), + SD_BUS_PROPERTY("Locale", "as", property_get_locale, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_PROPERTY("X11Layout", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_PROPERTY("X11Model", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_PROPERTY("X11Variant", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_PROPERTY("X11Options", "s", property_get_xkb, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_PROPERTY("VConsoleKeymap", "s", property_get_vconsole, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + SD_BUS_PROPERTY("VConsoleKeymapToggle", "s", property_get_vconsole, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), + + SD_BUS_METHOD_WITH_ARGS("SetLocale", + SD_BUS_ARGS("as", locale, "b", interactive), + SD_BUS_NO_RESULT, + method_set_locale, + SD_BUS_VTABLE_UNPRIVILEGED), + SD_BUS_METHOD_WITH_ARGS("SetVConsoleKeyboard", + SD_BUS_ARGS("s", keymap, "s", keymap_toggle, "b", convert, "b", interactive), + SD_BUS_NO_RESULT, + method_set_vc_keyboard, + SD_BUS_VTABLE_UNPRIVILEGED), + SD_BUS_METHOD_WITH_ARGS("SetX11Keyboard", + SD_BUS_ARGS("s", layout, "s", model, "s", variant, "s", options, "b", convert, "b", interactive), + SD_BUS_NO_RESULT, + method_set_x11_keyboard, + SD_BUS_VTABLE_UNPRIVILEGED), + + SD_BUS_VTABLE_END +}; + +static const BusObjectImplementation manager_object = { + "/org/freedesktop/locale1", + "org.freedesktop.locale1", + .vtables = BUS_VTABLES(locale_vtable), +}; + +static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int r; + + assert(c); + assert(event); + assert(_bus); + + r = sd_bus_default_system(&bus); + if (r < 0) + return log_error_errno(r, "Failed to get system bus connection: %m"); + + r = bus_add_implementation(bus, &manager_object, c); + if (r < 0) + return r; + + r = bus_log_control_api_register(bus); + if (r < 0) + return r; + + r = sd_bus_request_name_async(bus, NULL, "org.freedesktop.locale1", 0, NULL, NULL); + if (r < 0) + return log_error_errno(r, "Failed to request name: %m"); + + r = sd_bus_attach_event(bus, event, 0); + if (r < 0) + return log_error_errno(r, "Failed to attach bus to event loop: %m"); + + *_bus = TAKE_PTR(bus); + + return 0; +} + +static int run(int argc, char *argv[]) { + _cleanup_(context_clear) Context context = {}; + _cleanup_(sd_event_unrefp) sd_event *event = NULL; + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + int r; + + log_setup(); + + r = service_parse_argv("systemd-localed.service", + "Manage system locale settings and key mappings.", + BUS_IMPLEMENTATIONS(&manager_object, + &log_control_object), + argc, argv); + if (r <= 0) + return r; + + umask(0022); + + r = mac_init(); + if (r < 0) + return r; + + assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); + + r = sd_event_default(&event); + if (r < 0) + return log_error_errno(r, "Failed to allocate event loop: %m"); + + (void) sd_event_set_watchdog(event, true); + + r = sd_event_add_signal(event, NULL, SIGINT, NULL, NULL); + if (r < 0) + return log_error_errno(r, "Failed to install SIGINT handler: %m"); + + r = sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL); + if (r < 0) + return log_error_errno(r, "Failed to install SIGTERM handler: %m"); + + r = connect_bus(&context, event, &bus); + if (r < 0) + return r; + + r = bus_event_loop_with_idle(event, bus, "org.freedesktop.locale1", DEFAULT_EXIT_USEC, NULL, NULL); + if (r < 0) + return log_error_errno(r, "Failed to run event loop: %m"); + + return 0; +} + +DEFINE_MAIN_FUNCTION(run); |