]> git.ipfire.org Git - thirdparty/systemd.git/blobdiff - src/locale/localed.c
build-sys: use #if Y instead of #ifdef Y everywhere
[thirdparty/systemd.git] / src / locale / localed.c
index 720cbbaaba0121b6be453cdf8edd644bad6e4baf..3c0c167dcfa5dfac76e96f5a445d1773f19e3f2e 100644 (file)
@@ -1,5 +1,3 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
 /***
   This file is part of systemd.
 
@@ -24,8 +22,9 @@
 #include <string.h>
 #include <unistd.h>
 
-#ifdef HAVE_XKBCOMMON
+#if HAVE_XKBCOMMON
 #include <xkbcommon/xkbcommon.h>
+#include <dlfcn.h>
 #endif
 
 #include "sd-bus.h"
 #include "bus-message.h"
 #include "bus-util.h"
 #include "def.h"
-#include "env-util.h"
-#include "event-util.h"
-#include "fd-util.h"
-#include "fileio-label.h"
-#include "fileio.h"
+#include "keymap-util.h"
 #include "locale-util.h"
-#include "mkdir.h"
+#include "macro.h"
 #include "path-util.h"
 #include "selinux-util.h"
+#include "string-util.h"
 #include "strv.h"
 #include "user-util.h"
-#include "util.h"
-
-enum {
-        /* We don't list LC_ALL here on purpose. People should be
-         * using LANG instead. */
-        LOCALE_LANG,
-        LOCALE_LANGUAGE,
-        LOCALE_LC_CTYPE,
-        LOCALE_LC_NUMERIC,
-        LOCALE_LC_TIME,
-        LOCALE_LC_COLLATE,
-        LOCALE_LC_MONETARY,
-        LOCALE_LC_MESSAGES,
-        LOCALE_LC_PAPER,
-        LOCALE_LC_NAME,
-        LOCALE_LC_ADDRESS,
-        LOCALE_LC_TELEPHONE,
-        LOCALE_LC_MEASUREMENT,
-        LOCALE_LC_IDENTIFICATION,
-        _LOCALE_MAX
-};
-
-static const char * const names[_LOCALE_MAX] = {
-        [LOCALE_LANG] = "LANG",
-        [LOCALE_LANGUAGE] = "LANGUAGE",
-        [LOCALE_LC_CTYPE] = "LC_CTYPE",
-        [LOCALE_LC_NUMERIC] = "LC_NUMERIC",
-        [LOCALE_LC_TIME] = "LC_TIME",
-        [LOCALE_LC_COLLATE] = "LC_COLLATE",
-        [LOCALE_LC_MONETARY] = "LC_MONETARY",
-        [LOCALE_LC_MESSAGES] = "LC_MESSAGES",
-        [LOCALE_LC_PAPER] = "LC_PAPER",
-        [LOCALE_LC_NAME] = "LC_NAME",
-        [LOCALE_LC_ADDRESS] = "LC_ADDRESS",
-        [LOCALE_LC_TELEPHONE] = "LC_TELEPHONE",
-        [LOCALE_LC_MEASUREMENT] = "LC_MEASUREMENT",
-        [LOCALE_LC_IDENTIFICATION] = "LC_IDENTIFICATION"
-};
-
-typedef struct Context {
-        char *locale[_LOCALE_MAX];
-
-        char *x11_layout;
-        char *x11_model;
-        char *x11_variant;
-        char *x11_options;
-
-        char *vc_keymap;
-        char *vc_keymap_toggle;
-
-        Hashmap *polkit_registry;
-} Context;
-
-static const char* nonempty(const char *s) {
-        return isempty(s) ? NULL : s;
-}
-
-static bool startswith_comma(const char *s, const char *prefix) {
-        const char *t;
-
-        return s && (t = startswith(s, prefix)) && (*t == ',');
-}
-
-static void context_free_x11(Context *c) {
-        c->x11_layout = mfree(c->x11_layout);
-        c->x11_options = mfree(c->x11_options);
-        c->x11_model = mfree(c->x11_model);
-        c->x11_variant = mfree(c->x11_variant);
-}
-
-static void context_free_vconsole(Context *c) {
-        c->vc_keymap = mfree(c->vc_keymap);
-        c->vc_keymap_toggle = mfree(c->vc_keymap_toggle);
-}
-
-static void context_free_locale(Context *c) {
-        int p;
-
-        for (p = 0; p < _LOCALE_MAX; p++)
-                c->locale[p] = mfree(c->locale[p]);
-}
-
-static void context_free(Context *c) {
-        context_free_locale(c);
-        context_free_x11(c);
-        context_free_vconsole(c);
-
-        bus_verify_polkit_async_registry_free(c->polkit_registry);
-};
-
-static void locale_simplify(Context *c) {
-        int p;
-
-        for (p = LOCALE_LANG+1; p < _LOCALE_MAX; p++)
-                if (isempty(c->locale[p]) || streq_ptr(c->locale[LOCALE_LANG], c->locale[p]))
-                        c->locale[p] = mfree(c->locale[p]);
-}
-
-static int locale_read_data(Context *c) {
-        int r;
-
-        context_free_locale(c);
-
-        r = parse_env_file("/etc/locale.conf", NEWLINE,
-                           "LANG",              &c->locale[LOCALE_LANG],
-                           "LANGUAGE",          &c->locale[LOCALE_LANGUAGE],
-                           "LC_CTYPE",          &c->locale[LOCALE_LC_CTYPE],
-                           "LC_NUMERIC",        &c->locale[LOCALE_LC_NUMERIC],
-                           "LC_TIME",           &c->locale[LOCALE_LC_TIME],
-                           "LC_COLLATE",        &c->locale[LOCALE_LC_COLLATE],
-                           "LC_MONETARY",       &c->locale[LOCALE_LC_MONETARY],
-                           "LC_MESSAGES",       &c->locale[LOCALE_LC_MESSAGES],
-                           "LC_PAPER",          &c->locale[LOCALE_LC_PAPER],
-                           "LC_NAME",           &c->locale[LOCALE_LC_NAME],
-                           "LC_ADDRESS",        &c->locale[LOCALE_LC_ADDRESS],
-                           "LC_TELEPHONE",      &c->locale[LOCALE_LC_TELEPHONE],
-                           "LC_MEASUREMENT",    &c->locale[LOCALE_LC_MEASUREMENT],
-                           "LC_IDENTIFICATION", &c->locale[LOCALE_LC_IDENTIFICATION],
-                           NULL);
-
-        if (r == -ENOENT) {
-                int p;
-
-                /* Fill in what we got passed from systemd. */
-                for (p = 0; p < _LOCALE_MAX; p++) {
-                        assert(names[p]);
-
-                        r = free_and_strdup(&c->locale[p],
-                                            nonempty(getenv(names[p])));
-                        if (r < 0)
-                                return r;
-                }
-
-                r = 0;
-        }
-
-        locale_simplify(c);
-        return r;
-}
-
-static int vconsole_read_data(Context *c) {
-        int r;
-
-        context_free_vconsole(c);
-
-        r = parse_env_file("/etc/vconsole.conf", NEWLINE,
-                           "KEYMAP",        &c->vc_keymap,
-                           "KEYMAP_TOGGLE", &c->vc_keymap_toggle,
-                           NULL);
-
-        if (r < 0 && r != -ENOENT)
-                return r;
-
-        return 0;
-}
-
-static int x11_read_data(Context *c) {
-        _cleanup_fclose_ FILE *f;
-        char line[LINE_MAX];
-        bool in_section = false;
-        int r;
-
-        context_free_x11(c);
-
-        f = fopen("/etc/X11/xorg.conf.d/00-keyboard.conf", "re");
-        if (!f)
-                return errno == ENOENT ? 0 : -errno;
-
-        while (fgets(line, sizeof(line), f)) {
-                char *l;
-
-                char_array_0(line);
-                l = strstrip(line);
-
-                if (l[0] == 0 || l[0] == '#')
-                        continue;
-
-                if (in_section && first_word(l, "Option")) {
-                        _cleanup_strv_free_ char **a = NULL;
-
-                        r = strv_split_extract(&a, l, WHITESPACE, EXTRACT_QUOTES);
-                        if (r < 0)
-                                return r;
-
-                        if (strv_length(a) == 3) {
-                                char **p = NULL;
-
-                                if (streq(a[1], "XkbLayout"))
-                                        p = &c->x11_layout;
-                                else if (streq(a[1], "XkbModel"))
-                                        p = &c->x11_model;
-                                else if (streq(a[1], "XkbVariant"))
-                                        p = &c->x11_variant;
-                                else if (streq(a[1], "XkbOptions"))
-                                        p = &c->x11_options;
-
-                                if (p) {
-                                        free(*p);
-                                        *p = a[2];
-                                        a[2] = NULL;
-                                }
-                        }
-
-                } else if (!in_section && first_word(l, "Section")) {
-                        _cleanup_strv_free_ char **a = NULL;
-
-                        r = strv_split_extract(&a, l, WHITESPACE, EXTRACT_QUOTES);
-                        if (r < 0)
-                                return -ENOMEM;
-
-                        if (strv_length(a) == 2 && streq(a[1], "InputClass"))
-                                in_section = true;
-
-                } else if (in_section && first_word(l, "EndSection"))
-                        in_section = false;
-        }
-
-        return 0;
-}
-
-static int context_read_data(Context *c) {
-        int r, q, p;
-
-        r = locale_read_data(c);
-        q = vconsole_read_data(c);
-        p = x11_read_data(c);
-
-        return r < 0 ? r : q < 0 ? q : p;
-}
-
-static int locale_write_data(Context *c, char ***settings) {
-        int r, p;
-        _cleanup_strv_free_ char **l = NULL;
-
-        /* Set values will be returned as strv in *settings on success. */
-
-        r = load_env_file(NULL, "/etc/locale.conf", NULL, &l);
-        if (r < 0 && r != -ENOENT)
-                return r;
-
-        for (p = 0; p < _LOCALE_MAX; p++) {
-                _cleanup_free_ char *t = NULL;
-                char **u;
-
-                assert(names[p]);
-
-                if (isempty(c->locale[p])) {
-                        l = strv_env_unset(l, names[p]);
-                        continue;
-                }
-
-                if (asprintf(&t, "%s=%s", names[p], c->locale[p]) < 0)
-                        return -ENOMEM;
 
-                u = strv_env_set(l, t);
-                if (!u)
-                        return -ENOMEM;
-
-                strv_free(l);
-                l = u;
-        }
-
-        if (strv_isempty(l)) {
-                if (unlink("/etc/locale.conf") < 0)
-                        return errno == ENOENT ? 0 : -errno;
-
-                return 0;
-        }
-
-        r = write_env_file_label("/etc/locale.conf", l);
-        if (r < 0)
-                return r;
-
-        *settings = l;
-        l = NULL;
-        return 0;
-}
+static Hashmap *polkit_registry = NULL;
 
 static int locale_update_system_manager(Context *c, sd_bus *bus) {
         _cleanup_free_ char **l_unset = NULL;
         _cleanup_strv_free_ char **l_set = NULL;
-        _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
         sd_bus_error error = SD_BUS_ERROR_NULL;
         unsigned c_set, c_unset, p;
         int r;
 
         assert(bus);
 
-        l_unset = new0(char*, _LOCALE_MAX);
+        l_unset = new0(char*, _VARIABLE_LC_MAX);
         if (!l_unset)
                 return -ENOMEM;
 
-        l_set = new0(char*, _LOCALE_MAX);
+        l_set = new0(char*, _VARIABLE_LC_MAX);
         if (!l_set)
                 return -ENOMEM;
 
-        for (p = 0, c_set = 0, c_unset = 0; p < _LOCALE_MAX; p++) {
-                assert(names[p]);
+        for (p = 0, c_set = 0, c_unset = 0; p < _VARIABLE_LC_MAX; p++) {
+                const char *name;
+
+                name = locale_variable_to_string(p);
+                assert(name);
 
                 if (isempty(c->locale[p]))
-                        l_unset[c_set++] = (char*) names[p];
+                        l_unset[c_set++] = (char*) name;
                 else {
                         char *s;
 
-                        if (asprintf(&s, "%s=%s", names[p], c->locale[p]) < 0)
+                        if (asprintf(&s, "%s=%s", name, c->locale[p]) < 0)
                                 return -ENOMEM;
 
                         l_set[c_unset++] = s;
                 }
         }
 
-        assert(c_set + c_unset == _LOCALE_MAX);
+        assert(c_set + c_unset == _VARIABLE_LC_MAX);
         r = sd_bus_message_new_method_call(bus, &m,
                         "org.freedesktop.systemd1",
                         "/org/freedesktop/systemd1",
@@ -381,126 +105,8 @@ static int locale_update_system_manager(Context *c, sd_bus *bus) {
         return 0;
 }
 
-static int vconsole_write_data(Context *c) {
-        int r;
-        _cleanup_strv_free_ char **l = NULL;
-
-        r = load_env_file(NULL, "/etc/vconsole.conf", NULL, &l);
-        if (r < 0 && r != -ENOENT)
-                return r;
-
-        if (isempty(c->vc_keymap))
-                l = strv_env_unset(l, "KEYMAP");
-        else {
-                _cleanup_free_ char *s = NULL;
-                char **u;
-
-                s = strappend("KEYMAP=", c->vc_keymap);
-                if (!s)
-                        return -ENOMEM;
-
-                u = strv_env_set(l, s);
-                if (!u)
-                        return -ENOMEM;
-
-                strv_free(l);
-                l = u;
-        }
-
-        if (isempty(c->vc_keymap_toggle))
-                l = strv_env_unset(l, "KEYMAP_TOGGLE");
-        else  {
-                _cleanup_free_ char *s = NULL;
-                char **u;
-
-                s = strappend("KEYMAP_TOGGLE=", c->vc_keymap_toggle);
-                if (!s)
-                        return -ENOMEM;
-
-                u = strv_env_set(l, s);
-                if (!u)
-                        return -ENOMEM;
-
-                strv_free(l);
-                l = u;
-        }
-
-        if (strv_isempty(l)) {
-                if (unlink("/etc/vconsole.conf") < 0)
-                        return errno == ENOENT ? 0 : -errno;
-
-                return 0;
-        }
-
-        return write_env_file_label("/etc/vconsole.conf", l);
-}
-
-static int x11_write_data(Context *c) {
-        _cleanup_fclose_ FILE *f = NULL;
-        _cleanup_free_ char *temp_path = NULL;
-        int r;
-
-        if (isempty(c->x11_layout) &&
-            isempty(c->x11_model) &&
-            isempty(c->x11_variant) &&
-            isempty(c->x11_options)) {
-
-                if (unlink("/etc/X11/xorg.conf.d/00-keyboard.conf") < 0)
-                        return errno == ENOENT ? 0 : -errno;
-
-                return 0;
-        }
-
-        mkdir_p_label("/etc/X11/xorg.conf.d", 0755);
-
-        r = fopen_temporary("/etc/X11/xorg.conf.d/00-keyboard.conf", &f, &temp_path);
-        if (r < 0)
-                return r;
-
-        fchmod(fileno(f), 0644);
-
-        fputs("# Read and parsed by systemd-localed. It's probably wise not to edit this file\n"
-              "# manually too freely.\n"
-              "Section \"InputClass\"\n"
-              "        Identifier \"system-keyboard\"\n"
-              "        MatchIsKeyboard \"on\"\n", f);
-
-        if (!isempty(c->x11_layout))
-                fprintf(f, "        Option \"XkbLayout\" \"%s\"\n", c->x11_layout);
-
-        if (!isempty(c->x11_model))
-                fprintf(f, "        Option \"XkbModel\" \"%s\"\n", c->x11_model);
-
-        if (!isempty(c->x11_variant))
-                fprintf(f, "        Option \"XkbVariant\" \"%s\"\n", c->x11_variant);
-
-        if (!isempty(c->x11_options))
-                fprintf(f, "        Option \"XkbOptions\" \"%s\"\n", c->x11_options);
-
-        fputs("EndSection\n", f);
-
-        r = fflush_and_check(f);
-        if (r < 0)
-                goto fail;
-
-        if (rename(temp_path, "/etc/X11/xorg.conf.d/00-keyboard.conf") < 0) {
-                r = -errno;
-                goto fail;
-        }
-
-        return 0;
-
-fail:
-        (void) unlink("/etc/X11/xorg.conf.d/00-keyboard.conf");
-
-        if (temp_path)
-                (void) unlink(temp_path);
-
-        return r;
-}
-
 static int vconsole_reload(sd_bus *bus) {
-        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
         int r;
 
         assert(bus);
@@ -519,337 +125,48 @@ static int vconsole_reload(sd_bus *bus) {
         return r;
 }
 
-static const char* strnulldash(const char *s) {
-        return isempty(s) || streq(s, "-") ? NULL : s;
-}
-
-static int read_next_mapping(const char* filename,
-                             unsigned min_fields, unsigned max_fields,
-                             FILE *f, unsigned *n, char ***a) {
-        assert(f);
-        assert(n);
-        assert(a);
-
-        for (;;) {
-                char line[LINE_MAX];
-                char *l, **b;
-                int r;
-                size_t length;
-
-                errno = 0;
-                if (!fgets(line, sizeof(line), f)) {
-
-                        if (ferror(f))
-                                return errno ? -errno : -EIO;
-
-                        return 0;
-                }
-
-                (*n) ++;
-
-                l = strstrip(line);
-                if (l[0] == 0 || l[0] == '#')
-                        continue;
-
-                r = strv_split_extract(&b, l, WHITESPACE, EXTRACT_QUOTES);
-                if (r < 0)
-                        return r;
-
-                length = strv_length(b);
-                if (length < min_fields || length > max_fields) {
-                        log_error("Invalid line %s:%u, ignoring.", filename, *n);
-                        strv_free(b);
-                        continue;
-
-                }
-
-                *a = b;
-                return 1;
-        }
-}
-
-static int vconsole_convert_to_x11(Context *c, sd_bus *bus) {
-        bool modified = false;
-
-        assert(bus);
-
-        if (isempty(c->vc_keymap)) {
-
-                modified =
-                        !isempty(c->x11_layout) ||
-                        !isempty(c->x11_model) ||
-                        !isempty(c->x11_variant) ||
-                        !isempty(c->x11_options);
-
-                context_free_x11(c);
-        } else {
-                _cleanup_fclose_ FILE *f = NULL;
-                unsigned n = 0;
-
-                f = fopen(SYSTEMD_KBD_MODEL_MAP, "re");
-                if (!f)
-                        return -errno;
-
-                for (;;) {
-                        _cleanup_strv_free_ char **a = NULL;
-                        int r;
-
-                        r = read_next_mapping(SYSTEMD_KBD_MODEL_MAP, 5, UINT_MAX, f, &n, &a);
-                        if (r < 0)
-                                return r;
-                        if (r == 0)
-                                break;
-
-                        if (!streq(c->vc_keymap, a[0]))
-                                continue;
-
-                        if (!streq_ptr(c->x11_layout, strnulldash(a[1])) ||
-                            !streq_ptr(c->x11_model, strnulldash(a[2])) ||
-                            !streq_ptr(c->x11_variant, strnulldash(a[3])) ||
-                            !streq_ptr(c->x11_options, strnulldash(a[4]))) {
-
-                                if (free_and_strdup(&c->x11_layout, strnulldash(a[1])) < 0 ||
-                                    free_and_strdup(&c->x11_model, strnulldash(a[2])) < 0 ||
-                                    free_and_strdup(&c->x11_variant, strnulldash(a[3])) < 0 ||
-                                    free_and_strdup(&c->x11_options, strnulldash(a[4])) < 0)
-                                        return -ENOMEM;
-
-                                modified = true;
-                        }
-
-                        break;
-                }
-        }
-
-        if (modified) {
-                int r;
-
-                r = x11_write_data(c);
-                if (r < 0)
-                        return log_error_errno(r, "Failed to set X11 keyboard layout: %m");
-
-                log_info("Changed X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
-                         strempty(c->x11_layout),
-                         strempty(c->x11_model),
-                         strempty(c->x11_variant),
-                         strempty(c->x11_options));
-
-                sd_bus_emit_properties_changed(bus,
-                                "/org/freedesktop/locale1",
-                                "org.freedesktop.locale1",
-                                "X11Layout", "X11Model", "X11Variant", "X11Options", NULL);
-        } else
-                log_debug("X11 keyboard layout was not modified.");
-
-        return 0;
-}
-
-static int find_converted_keymap(const char *x11_layout, const char *x11_variant, char **new_keymap) {
-        const char *dir;
-        _cleanup_free_ char *n;
-
-        if (x11_variant)
-                n = strjoin(x11_layout, "-", x11_variant, NULL);
-        else
-                n = strdup(x11_layout);
-        if (!n)
-                return -ENOMEM;
-
-        NULSTR_FOREACH(dir, KBD_KEYMAP_DIRS) {
-                _cleanup_free_ char *p = NULL, *pz = NULL;
-                bool uncompressed;
-
-                p = strjoin(dir, "xkb/", n, ".map", NULL);
-                pz = strjoin(dir, "xkb/", n, ".map.gz", NULL);
-                if (!p || !pz)
-                        return -ENOMEM;
-
-                uncompressed = access(p, F_OK) == 0;
-                if (uncompressed || access(pz, F_OK) == 0) {
-                        log_debug("Found converted keymap %s at %s",
-                                  n, uncompressed ? p : pz);
-
-                        *new_keymap = n;
-                        n = NULL;
-                        return 1;
-                }
-        }
-
-        return 0;
-}
-
-static int find_legacy_keymap(Context *c, char **new_keymap) {
-        _cleanup_fclose_ FILE *f;
-        unsigned n = 0;
-        unsigned best_matching = 0;
+static int vconsole_convert_to_x11_and_emit(Context *c, sd_bus *bus) {
         int r;
 
-        f = fopen(SYSTEMD_KBD_MODEL_MAP, "re");
-        if (!f)
-                return -errno;
-
-        for (;;) {
-                _cleanup_strv_free_ char **a = NULL;
-                unsigned matching = 0;
-
-                r = read_next_mapping(SYSTEMD_KBD_MODEL_MAP, 5, UINT_MAX, f, &n, &a);
-                if (r < 0)
-                        return r;
-                if (r == 0)
-                        break;
-
-                /* Determine how well matching this entry is */
-                if (streq_ptr(c->x11_layout, a[1]))
-                        /* If we got an exact match, this is best */
-                        matching = 10;
-                else {
-                        /* We have multiple X layouts, look for an
-                         * entry that matches our key with everything
-                         * but the first layout stripped off. */
-                        if (startswith_comma(c->x11_layout, a[1]))
-                                matching = 5;
-                        else  {
-                                char *x;
-
-                                /* If that didn't work, strip off the
-                                 * other layouts from the entry, too */
-                                x = strndupa(a[1], strcspn(a[1], ","));
-                                if (startswith_comma(c->x11_layout, x))
-                                        matching = 1;
-                        }
-                }
-
-                if (matching > 0) {
-                        if (isempty(c->x11_model) || streq_ptr(c->x11_model, a[2])) {
-                                matching++;
-
-                                if (streq_ptr(c->x11_variant, a[3])) {
-                                        matching++;
-
-                                        if (streq_ptr(c->x11_options, a[4]))
-                                                matching++;
-                                }
-                        }
-                }
-
-                /* The best matching entry so far, then let's save that */
-                if (matching >= MAX(best_matching, 1u)) {
-                        log_debug("Found legacy keymap %s with score %u",
-                                  a[0], matching);
-
-                        if (matching > best_matching) {
-                                best_matching = matching;
-
-                                r = free_and_strdup(new_keymap, a[0]);
-                                if (r < 0)
-                                        return r;
-                        }
-                }
-        }
-
-        if (best_matching < 10 && c->x11_layout) {
-                /* The best match is only the first part of the X11
-                 * keymap. Check if we have a converted map which
-                 * matches just the first layout.
-                 */
-                char *l, *v = NULL, *converted;
-
-                l = strndupa(c->x11_layout, strcspn(c->x11_layout, ","));
-                if (c->x11_variant)
-                        v = strndupa(c->x11_variant, strcspn(c->x11_variant, ","));
-                r = find_converted_keymap(l, v, &converted);
-                if (r < 0)
-                        return r;
-                if (r > 0) {
-                        free(*new_keymap);
-                        *new_keymap = converted;
-                }
-        }
-
-        return 0;
-}
-
-static int find_language_fallback(const char *lang, char **language) {
-        _cleanup_fclose_ FILE *f = NULL;
-        unsigned n = 0;
-
-        assert(language);
-
-        f = fopen(SYSTEMD_LANGUAGE_FALLBACK_MAP, "re");
-        if (!f)
-                return -errno;
+        assert(bus);
 
-        for (;;) {
-                _cleanup_strv_free_ char **a = NULL;
-                int r;
+        r = vconsole_convert_to_x11(c);
+        if (r <= 0)
+                return r;
 
-                r = read_next_mapping(SYSTEMD_LANGUAGE_FALLBACK_MAP, 2, 2, f, &n, &a);
-                if (r <= 0)
-                        return r;
+        /* modified */
+        r = x11_write_data(c);
+        if (r < 0)
+                return log_error_errno(r, "Failed to write X11 keyboard layout: %m");
 
-                if (streq(lang, a[0])) {
-                        assert(strv_length(a) == 2);
-                        *language = a[1];
-                        a[1] = NULL;
-                        return 1;
-                }
-        }
+        sd_bus_emit_properties_changed(bus,
+                                       "/org/freedesktop/locale1",
+                                       "org.freedesktop.locale1",
+                                       "X11Layout", "X11Model", "X11Variant", "X11Options", NULL);
 
-        assert_not_reached("should not be here");
+        return 1;
 }
 
-static int x11_convert_to_vconsole(Context *c, sd_bus *bus) {
-        bool modified = false;
+static int x11_convert_to_vconsole_and_emit(Context *c, sd_bus *bus) {
         int r;
 
         assert(bus);
 
-        if (isempty(c->x11_layout)) {
-
-                modified =
-                        !isempty(c->vc_keymap) ||
-                        !isempty(c->vc_keymap_toggle);
-
-                context_free_x11(c);
-        } else {
-                char *new_keymap = NULL;
-
-                r = find_converted_keymap(c->x11_layout, c->x11_variant, &new_keymap);
-                if (r < 0)
-                        return r;
-                else if (r == 0) {
-                        r = find_legacy_keymap(c, &new_keymap);
-                        if (r < 0)
-                                return r;
-                }
-
-                if (!streq_ptr(c->vc_keymap, new_keymap)) {
-                        free(c->vc_keymap);
-                        c->vc_keymap = new_keymap;
-                        c->vc_keymap_toggle = mfree(c->vc_keymap_toggle);
-                        modified = true;
-                } else
-                        free(new_keymap);
-        }
-
-        if (modified) {
-                r = vconsole_write_data(c);
-                if (r < 0)
-                        log_error_errno(r, "Failed to set virtual console keymap: %m");
-
-                log_info("Changed virtual console keymap to '%s' toggle '%s'",
-                         strempty(c->vc_keymap), strempty(c->vc_keymap_toggle));
+        r = x11_convert_to_vconsole(c);
+        if (r <= 0)
+                return r;
 
-                sd_bus_emit_properties_changed(bus,
-                                "/org/freedesktop/locale1",
-                                "org.freedesktop.locale1",
-                                "VConsoleKeymap", "VConsoleKeymapToggle", NULL);
+        /* modified */
+        r = vconsole_write_data(c);
+        if (r < 0)
+                log_error_errno(r, "Failed to save virtual console keymap: %m");
 
-                return vconsole_reload(bus);
-        } else
-                log_debug("Virtual console keymap was not modified.");
+        sd_bus_emit_properties_changed(bus,
+                                       "/org/freedesktop/locale1",
+                                       "org.freedesktop.locale1",
+                                       "VConsoleKeymap", "VConsoleKeymapToggle", NULL);
 
-        return 0;
+        return vconsole_reload(bus);
 }
 
 static int property_get_locale(
@@ -865,17 +182,21 @@ static int property_get_locale(
         _cleanup_strv_free_ char **l = NULL;
         int p, q;
 
-        l = new0(char*, _LOCALE_MAX+1);
+        l = new0(char*, _VARIABLE_LC_MAX+1);
         if (!l)
                 return -ENOMEM;
 
-        for (p = 0, q = 0; p < _LOCALE_MAX; p++) {
+        for (p = 0, q = 0; p < _VARIABLE_LC_MAX; p++) {
                 char *t;
+                const char *name;
+
+                name = locale_variable_to_string(p);
+                assert(name);
 
                 if (isempty(c->locale[p]))
                         continue;
 
-                if (asprintf(&t, "%s=%s", names[p], c->locale[p]) < 0)
+                if (asprintf(&t, "%s=%s", name, c->locale[p]) < 0)
                         return -ENOMEM;
 
                 l[q++] = t;
@@ -891,7 +212,7 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
         const char *lang = NULL;
         int interactive;
         bool modified = false;
-        bool have[_LOCALE_MAX] = {};
+        bool have[_VARIABLE_LC_MAX] = {};
         int p;
         int r;
 
@@ -910,17 +231,21 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
         STRV_FOREACH(i, l) {
                 bool valid = false;
 
-                for (p = 0; p < _LOCALE_MAX; p++) {
+                for (p = 0; p < _VARIABLE_LC_MAX; p++) {
                         size_t k;
+                        const char *name;
 
-                        k = strlen(names[p]);
-                        if (startswith(*i, names[p]) &&
+                        name = locale_variable_to_string(p);
+                        assert(name);
+
+                        k = strlen(name);
+                        if (startswith(*i, name) &&
                             (*i)[k] == '=' &&
                             locale_is_valid((*i) + k + 1)) {
                                 valid = true;
                                 have[p] = true;
 
-                                if (p == LOCALE_LANG)
+                                if (p == VARIABLE_LANG)
                                         lang = (*i) + k + 1;
 
                                 if (!streq_ptr(*i + k + 1, c->locale[p]))
@@ -936,7 +261,7 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
 
         /* If LANG was specified, but not LANGUAGE, check if we should
          * set it based on the language fallback table. */
-        if (have[LOCALE_LANG] && !have[LOCALE_LANGUAGE]) {
+        if (have[VARIABLE_LANG] && !have[VARIABLE_LANGUAGE]) {
                 _cleanup_free_ char *language = NULL;
 
                 assert(lang);
@@ -944,12 +269,12 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
                 (void) find_language_fallback(lang, &language);
                 if (language) {
                         log_debug("Converted LANG=%s to LANGUAGE=%s", lang, language);
-                        if (!streq_ptr(language, c->locale[LOCALE_LANGUAGE])) {
+                        if (!streq_ptr(language, c->locale[VARIABLE_LANGUAGE])) {
                                 r = strv_extendf(&l, "LANGUAGE=%s", language);
                                 if (r < 0)
                                         return r;
 
-                                have[LOCALE_LANGUAGE] = true;
+                                have[VARIABLE_LANGUAGE] = true;
                                 modified = true;
                         }
                 }
@@ -957,7 +282,7 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
 
         /* Check whether a variable is unset */
         if (!modified)
-                for (p = 0; p < _LOCALE_MAX; p++)
+                for (p = 0; p < _VARIABLE_LC_MAX; p++)
                         if (!isempty(c->locale[p]) && !have[p]) {
                                 modified = true;
                                 break;
@@ -973,7 +298,7 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
                                 NULL,
                                 interactive,
                                 UID_INVALID,
-                                &c->polkit_registry,
+                                &polkit_registry,
                                 error);
                 if (r < 0)
                         return r;
@@ -981,11 +306,15 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 
                 STRV_FOREACH(i, l)
-                        for (p = 0; p < _LOCALE_MAX; p++) {
+                        for (p = 0; p < _VARIABLE_LC_MAX; p++) {
                                 size_t k;
+                                const char *name;
+
+                                name = locale_variable_to_string(p);
+                                assert(name);
 
-                                k = strlen(names[p]);
-                                if (startswith(*i, names[p]) && (*i)[k] == '=') {
+                                k = strlen(name);
+                                if (startswith(*i, name) && (*i)[k] == '=') {
                                         r = free_and_strdup(&c->locale[p], *i + k + 1);
                                         if (r < 0)
                                                 return r;
@@ -993,7 +322,7 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
                                 }
                         }
 
-                for (p = 0; p < _LOCALE_MAX; p++) {
+                for (p = 0; p < _VARIABLE_LC_MAX; p++) {
                         if (have[p])
                                 continue;
 
@@ -1005,7 +334,7 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
                 r = locale_write_data(c, &settings);
                 if (r < 0) {
                         log_error_errno(r, "Failed to set locale: %m");
-                        return sd_bus_error_set_errnof(error, r, "Failed to set locale: %s", strerror(-r));
+                        return sd_bus_error_set_errnof(error, r, "Failed to set locale: %m");
                 }
 
                 locale_update_system_manager(c, sd_bus_message_get_bus(m));
@@ -1043,11 +372,8 @@ static int method_set_vc_keyboard(sd_bus_message *m, void *userdata, sd_bus_erro
         if (r < 0)
                 return r;
 
-        if (isempty(keymap))
-                keymap = NULL;
-
-        if (isempty(keymap_toggle))
-                keymap_toggle = NULL;
+        keymap = empty_to_null(keymap);
+        keymap_toggle = empty_to_null(keymap_toggle);
 
         if (!streq_ptr(keymap, c->vc_keymap) ||
             !streq_ptr(keymap_toggle, c->vc_keymap_toggle)) {
@@ -1063,7 +389,7 @@ static int method_set_vc_keyboard(sd_bus_message *m, void *userdata, sd_bus_erro
                                 NULL,
                                 interactive,
                                 UID_INVALID,
-                                &c->polkit_registry,
+                                &polkit_registry,
                                 error);
                 if (r < 0)
                         return r;
@@ -1077,7 +403,7 @@ static int method_set_vc_keyboard(sd_bus_message *m, void *userdata, sd_bus_erro
                 r = vconsole_write_data(c);
                 if (r < 0) {
                         log_error_errno(r, "Failed to set virtual console keymap: %m");
-                        return sd_bus_error_set_errnof(error, r, "Failed to set virtual console keymap: %s", strerror(-r));
+                        return sd_bus_error_set_errnof(error, r, "Failed to set virtual console keymap: %m");
                 }
 
                 log_info("Changed virtual console keymap to '%s' toggle '%s'",
@@ -1094,7 +420,7 @@ static int method_set_vc_keyboard(sd_bus_message *m, void *userdata, sd_bus_erro
                                 "VConsoleKeymap", "VConsoleKeymapToggle", NULL);
 
                 if (convert) {
-                        r = vconsole_convert_to_x11(c, sd_bus_message_get_bus(m));
+                        r = vconsole_convert_to_x11_and_emit(c, sd_bus_message_get_bus(m));
                         if (r < 0)
                                 log_error_errno(r, "Failed to convert keymap data: %m");
                 }
@@ -1103,16 +429,37 @@ static int method_set_vc_keyboard(sd_bus_message *m, void *userdata, sd_bus_erro
         return sd_bus_reply_method_return(m, NULL);
 }
 
-#ifdef HAVE_XKBCOMMON
+#if HAVE_XKBCOMMON
+
 _printf_(3, 0)
 static void log_xkb(struct xkb_context *ctx, enum xkb_log_level lvl, const char *format, va_list args) {
         const char *fmt;
 
         fmt = strjoina("libxkbcommon: ", format);
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-nonliteral"
         log_internalv(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, fmt, args);
+#pragma GCC diagnostic pop
 }
 
+#define LOAD_SYMBOL(symbol, dl, name)                                   \
+        ({                                                              \
+                (symbol) = (typeof(symbol)) dlvsym((dl), (name), "V_0.5.0"); \
+                (symbol) ? 0 : -EOPNOTSUPP;                             \
+        })
+
 static int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {
+
+        /* We dlopen() the library in order to make the dependency soft. The library (and what it pulls in) is huge
+         * after all, hence let's support XKB maps when the library is around, and refuse otherwise. The function
+         * pointers to the shared library are below: */
+
+        struct xkb_context* (*symbol_xkb_context_new)(enum xkb_context_flags flags) = NULL;
+        void (*symbol_xkb_context_unref)(struct xkb_context *context) = NULL;
+        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;
+        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;
+        void (*symbol_xkb_keymap_unref)(struct xkb_keymap *keymap) = NULL;
+
         const struct xkb_rule_names rmlvo = {
                 .model          = model,
                 .layout         = layout,
@@ -1121,35 +468,68 @@ static int verify_xkb_rmlvo(const char *model, const char *layout, const char *v
         };
         struct xkb_context *ctx = NULL;
         struct xkb_keymap *km = NULL;
+        void *dl;
         int r;
 
-        /* compile keymap from RMLVO information to check out its validity */
+        /* Compile keymap from RMLVO information to check out its validity */
+
+        dl = dlopen("libxkbcommon.so.0", RTLD_LAZY);
+        if (!dl)
+                return -EOPNOTSUPP;
+
+        r = LOAD_SYMBOL(symbol_xkb_context_new, dl, "xkb_context_new");
+        if (r < 0)
+                goto finish;
+
+        r = LOAD_SYMBOL(symbol_xkb_context_unref, dl, "xkb_context_unref");
+        if (r < 0)
+                goto finish;
+
+        r = LOAD_SYMBOL(symbol_xkb_context_set_log_fn, dl, "xkb_context_set_log_fn");
+        if (r < 0)
+                goto finish;
+
+        r = LOAD_SYMBOL(symbol_xkb_keymap_new_from_names, dl, "xkb_keymap_new_from_names");
+        if (r < 0)
+                goto finish;
+
+        r = LOAD_SYMBOL(symbol_xkb_keymap_unref, dl, "xkb_keymap_unref");
+        if (r < 0)
+                goto finish;
 
-        ctx = xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES);
+        ctx = symbol_xkb_context_new(XKB_CONTEXT_NO_ENVIRONMENT_NAMES);
         if (!ctx) {
                 r = -ENOMEM;
-                goto exit;
+                goto finish;
         }
 
-        xkb_context_set_log_fn(ctx, log_xkb);
+        symbol_xkb_context_set_log_fn(ctx, log_xkb);
 
-        km = xkb_keymap_new_from_names(ctx, &rmlvo, XKB_KEYMAP_COMPILE_NO_FLAGS);
+        km = symbol_xkb_keymap_new_from_names(ctx, &rmlvo, XKB_KEYMAP_COMPILE_NO_FLAGS);
         if (!km) {
                 r = -EINVAL;
-                goto exit;
+                goto finish;
         }
 
         r = 0;
 
-exit:
-        xkb_keymap_unref(km);
-        xkb_context_unref(ctx);
+finish:
+        if (symbol_xkb_keymap_unref && km)
+                symbol_xkb_keymap_unref(km);
+
+        if (symbol_xkb_context_unref && ctx)
+                symbol_xkb_context_unref(ctx);
+
+        (void) dlclose(dl);
         return r;
 }
+
 #else
+
 static int verify_xkb_rmlvo(const char *model, const char *layout, const char *variant, const char *options) {
         return 0;
 }
+
 #endif
 
 static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_error *error) {
@@ -1165,17 +545,10 @@ static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_err
         if (r < 0)
                 return r;
 
-        if (isempty(layout))
-                layout = NULL;
-
-        if (isempty(model))
-                model = NULL;
-
-        if (isempty(variant))
-                variant = NULL;
-
-        if (isempty(options))
-                options = NULL;
+        layout = empty_to_null(layout);
+        model = empty_to_null(model);
+        variant = empty_to_null(variant);
+        options = empty_to_null(options);
 
         if (!streq_ptr(layout, c->x11_layout) ||
             !streq_ptr(model, c->x11_model) ||
@@ -1195,7 +568,7 @@ static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_err
                                 NULL,
                                 interactive,
                                 UID_INVALID,
-                                &c->polkit_registry,
+                                &polkit_registry,
                                 error);
                 if (r < 0)
                         return r;
@@ -1206,7 +579,11 @@ static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_err
                 if (r < 0) {
                         log_error_errno(r, "Cannot compile XKB keymap for new x11 keyboard layout ('%s' / '%s' / '%s' / '%s'): %m",
                                         strempty(model), strempty(layout), strempty(variant), strempty(options));
-                        return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot compile XKB keymap, refusing");
+
+                        if (r == -EOPNOTSUPP)
+                                return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Local keyboard configuration not supported on this system.");
+
+                        return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Specified keymap cannot be compiled, refusing as invalid.");
                 }
 
                 if (free_and_strdup(&c->x11_layout, layout) < 0 ||
@@ -1218,7 +595,7 @@ static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_err
                 r = x11_write_data(c);
                 if (r < 0) {
                         log_error_errno(r, "Failed to set X11 keyboard layout: %m");
-                        return sd_bus_error_set_errnof(error, r, "Failed to set X11 keyboard layout: %s", strerror(-r));
+                        return sd_bus_error_set_errnof(error, r, "Failed to set X11 keyboard layout: %m");
                 }
 
                 log_info("Changed X11 keyboard layout to '%s' model '%s' variant '%s' options '%s'",
@@ -1234,7 +611,7 @@ static int method_set_x11_keyboard(sd_bus_message *m, void *userdata, sd_bus_err
                                 "X11Layout", "X11Model", "X11Variant", "X11Options", NULL);
 
                 if (convert) {
-                        r = x11_convert_to_vconsole(c, sd_bus_message_get_bus(m));
+                        r = x11_convert_to_vconsole_and_emit(c, sd_bus_message_get_bus(m));
                         if (r < 0)
                                 log_error_errno(r, "Failed to convert keymap data: %m");
                 }
@@ -1259,7 +636,7 @@ static const sd_bus_vtable locale_vtable[] = {
 };
 
 static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) {
-        _cleanup_bus_flush_close_unref_ sd_bus *bus = NULL;
+        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
         int r;
 
         assert(c);
@@ -1290,8 +667,8 @@ static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) {
 
 int main(int argc, char *argv[]) {
         _cleanup_(context_free) Context context = {};
-        _cleanup_event_unref_ sd_event *event = NULL;
-        _cleanup_bus_flush_close_unref_ sd_bus *bus = NULL;
+        _cleanup_(sd_event_unrefp) sd_event *event = NULL;
+        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
         int r;
 
         log_set_target(LOG_TARGET_AUTO);
@@ -1299,7 +676,7 @@ int main(int argc, char *argv[]) {
         log_open();
 
         umask(0022);
-        mac_selinux_init("/etc");
+        mac_selinux_init();
 
         if (argc != 1) {
                 log_error("This program takes no arguments.");
@@ -1326,11 +703,11 @@ int main(int argc, char *argv[]) {
         }
 
         r = bus_event_loop_with_idle(event, bus, "org.freedesktop.locale1", DEFAULT_EXIT_USEC, NULL, NULL);
-        if (r < 0) {
+        if (r < 0)
                 log_error_errno(r, "Failed to run event loop: %m");
-                goto finish;
-        }
 
 finish:
+        bus_verify_polkit_async_registry_free(polkit_registry);
+
         return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
 }