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Diffstat (limited to 'src/grp-locale/systemd-localed/keymap-util.c')
-rw-r--r--src/grp-locale/systemd-localed/keymap-util.c725
1 files changed, 725 insertions, 0 deletions
diff --git a/src/grp-locale/systemd-localed/keymap-util.c b/src/grp-locale/systemd-localed/keymap-util.c
new file mode 100644
index 0000000000..bbaae0d8c8
--- /dev/null
+++ b/src/grp-locale/systemd-localed/keymap-util.c
@@ -0,0 +1,725 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2011 Lennart Poettering
+ Copyright 2013 Kay Sievers
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "systemd-basic/def.h"
+#include "systemd-basic/env-util.h"
+#include "systemd-basic/fd-util.h"
+#include "systemd-basic/fileio-label.h"
+#include "systemd-basic/fileio.h"
+#include "systemd-basic/locale-util.h"
+#include "systemd-basic/macro.h"
+#include "systemd-basic/mkdir.h"
+#include "systemd-basic/string-util.h"
+#include "systemd-basic/strv.h"
+
+#include "keymap-util.h"
+
+static bool startswith_comma(const char *s, const char *prefix) {
+ s = startswith(s, prefix);
+ if (!s)
+ return false;
+
+ return *s == ',' || *s == '\0';
+}
+
+static const char* strnulldash(const char *s) {
+ return isempty(s) || streq(s, "-") ? NULL : s;
+}
+
+static const char* systemd_kbd_model_map(void) {
+ const char* s;
+
+ s = getenv("SYSTEMD_KBD_MODEL_MAP");
+ if (s)
+ return s;
+
+ return SYSTEMD_KBD_MODEL_MAP;
+}
+
+static const char* systemd_language_fallback_map(void) {
+ const char* s;
+
+ s = getenv("SYSTEMD_LANGUAGE_FALLBACK_MAP");
+ if (s)
+ return s;
+
+ return SYSTEMD_LANGUAGE_FALLBACK_MAP;
+}
+
+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 < _VARIABLE_LC_MAX; p++)
+ c->locale[p] = mfree(c->locale[p]);
+}
+
+void context_free(Context *c) {
+ context_free_locale(c);
+ context_free_x11(c);
+ context_free_vconsole(c);
+};
+
+void locale_simplify(Context *c) {
+ int p;
+
+ for (p = VARIABLE_LANG+1; p < _VARIABLE_LC_MAX; p++)
+ if (isempty(c->locale[p]) || streq_ptr(c->locale[VARIABLE_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[VARIABLE_LANG],
+ "LANGUAGE", &c->locale[VARIABLE_LANGUAGE],
+ "LC_CTYPE", &c->locale[VARIABLE_LC_CTYPE],
+ "LC_NUMERIC", &c->locale[VARIABLE_LC_NUMERIC],
+ "LC_TIME", &c->locale[VARIABLE_LC_TIME],
+ "LC_COLLATE", &c->locale[VARIABLE_LC_COLLATE],
+ "LC_MONETARY", &c->locale[VARIABLE_LC_MONETARY],
+ "LC_MESSAGES", &c->locale[VARIABLE_LC_MESSAGES],
+ "LC_PAPER", &c->locale[VARIABLE_LC_PAPER],
+ "LC_NAME", &c->locale[VARIABLE_LC_NAME],
+ "LC_ADDRESS", &c->locale[VARIABLE_LC_ADDRESS],
+ "LC_TELEPHONE", &c->locale[VARIABLE_LC_TELEPHONE],
+ "LC_MEASUREMENT", &c->locale[VARIABLE_LC_MEASUREMENT],
+ "LC_IDENTIFICATION", &c->locale[VARIABLE_LC_IDENTIFICATION],
+ NULL);
+
+ if (r == -ENOENT) {
+ int p;
+
+ /* Fill in what we got passed from systemd. */
+ for (p = 0; p < _VARIABLE_LC_MAX; p++) {
+ const char *name;
+
+ name = locale_variable_to_string(p);
+ assert(name);
+
+ r = free_and_strdup(&c->locale[p], empty_to_null(getenv(name)));
+ 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;
+}
+
+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;
+}
+
+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 < _VARIABLE_LC_MAX; p++) {
+ _cleanup_free_ char *t = NULL;
+ char **u;
+ const char *name;
+
+ name = locale_variable_to_string(p);
+ assert(name);
+
+ if (isempty(c->locale[p])) {
+ l = strv_env_unset(l, name);
+ continue;
+ }
+
+ if (asprintf(&t, "%s=%s", name, 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;
+}
+
+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);
+}
+
+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 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 > 0 ? -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;
+ }
+}
+
+int vconsole_convert_to_x11(Context *c) {
+ const char *map;
+ int modified = -1;
+
+ map = systemd_kbd_model_map();
+
+ 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(map, "re");
+ if (!f)
+ return -errno;
+
+ for (;;) {
+ _cleanup_strv_free_ char **a = NULL;
+ int r;
+
+ r = read_next_mapping(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 > 0)
+ log_info("Changing 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));
+ else if (modified < 0)
+ log_notice("X11 keyboard layout was not modified: no conversion found for \"%s\".",
+ c->vc_keymap);
+ else
+ log_debug("X11 keyboard layout did not need to be modified.");
+
+ return modified > 0;
+}
+
+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;
+}
+
+int find_legacy_keymap(Context *c, char **new_keymap) {
+ const char *map;
+ _cleanup_fclose_ FILE *f = NULL;
+ unsigned n = 0;
+ unsigned best_matching = 0;
+ int r;
+
+ assert(!isempty(c->x11_layout));
+
+ map = systemd_kbd_model_map();
+
+ f = fopen(map, "re");
+ if (!f)
+ return -errno;
+
+ for (;;) {
+ _cleanup_strv_free_ char **a = NULL;
+ unsigned matching = 0;
+
+ r = read_next_mapping(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(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 (bool) *new_keymap;
+}
+
+int find_language_fallback(const char *lang, char **language) {
+ const char *map;
+ _cleanup_fclose_ FILE *f = NULL;
+ unsigned n = 0;
+
+ assert(lang);
+ assert(language);
+
+ map = systemd_language_fallback_map();
+
+ f = fopen(map, "re");
+ if (!f)
+ return -errno;
+
+ for (;;) {
+ _cleanup_strv_free_ char **a = NULL;
+ int r;
+
+ r = read_next_mapping(map, 2, 2, f, &n, &a);
+ if (r <= 0)
+ return r;
+
+ if (streq(lang, a[0])) {
+ assert(strv_length(a) == 2);
+ *language = a[1];
+ a[1] = NULL;
+ return 1;
+ }
+ }
+
+ assert_not_reached("should not be here");
+}
+
+int x11_convert_to_vconsole(Context *c) {
+ bool modified = false;
+
+ if (isempty(c->x11_layout)) {
+ modified =
+ !isempty(c->vc_keymap) ||
+ !isempty(c->vc_keymap_toggle);
+
+ context_free_vconsole(c);
+ } else {
+ char *new_keymap = NULL;
+ int r;
+
+ 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 (r == 0)
+ /* 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\".",
+ c->x11_layout);
+
+ 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)
+ log_info("Changing virtual console keymap to '%s' toggle '%s'",
+ strempty(c->vc_keymap), strempty(c->vc_keymap_toggle));
+ else
+ log_debug("Virtual console keymap was not modified.");
+
+ return modified;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 12:32:05 +0000