| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #include <errno.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include "bus-polkit.h" |
| #include "copy.h" |
| #include "env-file-label.h" |
| #include "env-file.h" |
| #include "env-util.h" |
| #include "fd-util.h" |
| #include "fileio-label.h" |
| #include "fileio.h" |
| #include "fs-util.h" |
| #include "kbd-util.h" |
| #include "keymap-util.h" |
| #include "locale-util.h" |
| #include "macro.h" |
| #include "mkdir.h" |
| #include "nulstr-util.h" |
| #include "process-util.h" |
| #include "string-util.h" |
| #include "strv.h" |
| #include "tmpfile-util.h" |
| |
| static bool startswith_comma(const char *s, const char *prefix) { |
| s = startswith(s, prefix); |
| if (!s) |
| return false; |
| |
| return IN_SET(*s, ',', '\0'); |
| } |
| |
| 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) { |
| for (LocaleVariable p = 0; p < _VARIABLE_LC_MAX; p++) |
| c->locale[p] = mfree(c->locale[p]); |
| } |
| |
| void context_clear(Context *c) { |
| context_free_locale(c); |
| context_free_x11(c); |
| context_free_vconsole(c); |
| |
| sd_bus_message_unref(c->locale_cache); |
| sd_bus_message_unref(c->x11_cache); |
| sd_bus_message_unref(c->vc_cache); |
| |
| bus_verify_polkit_async_registry_free(c->polkit_registry); |
| }; |
| |
| void locale_simplify(char *locale[_VARIABLE_LC_MAX]) { |
| for (LocaleVariable p = VARIABLE_LANG+1; p < _VARIABLE_LC_MAX; p++) |
| if (isempty(locale[p]) || streq_ptr(locale[VARIABLE_LANG], locale[p])) |
| locale[p] = mfree(locale[p]); |
| } |
| |
| int locale_read_data(Context *c, sd_bus_message *m) { |
| struct stat st; |
| int r; |
| |
| /* Do not try to re-read the file within single bus operation. */ |
| if (m) { |
| if (m == c->locale_cache) |
| return 0; |
| |
| sd_bus_message_unref(c->locale_cache); |
| c->locale_cache = sd_bus_message_ref(m); |
| } |
| |
| r = stat("/etc/locale.conf", &st); |
| if (r < 0 && errno != ENOENT) |
| return -errno; |
| |
| if (r >= 0) { |
| usec_t t; |
| |
| /* If mtime is not changed, then we do not need to re-read the file. */ |
| t = timespec_load(&st.st_mtim); |
| if (c->locale_mtime != USEC_INFINITY && t == c->locale_mtime) |
| return 0; |
| |
| c->locale_mtime = t; |
| context_free_locale(c); |
| |
| r = parse_env_file(NULL, "/etc/locale.conf", |
| "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]); |
| if (r < 0) |
| return r; |
| } else { |
| c->locale_mtime = USEC_INFINITY; |
| context_free_locale(c); |
| |
| /* Fill in what we got passed from systemd. */ |
| for (LocaleVariable 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; |
| } |
| } |
| |
| locale_simplify(c->locale); |
| return 0; |
| } |
| |
| int vconsole_read_data(Context *c, sd_bus_message *m) { |
| struct stat st; |
| usec_t t; |
| int r; |
| |
| /* Do not try to re-read the file within single bus operation. */ |
| if (m) { |
| if (m == c->vc_cache) |
| return 0; |
| |
| sd_bus_message_unref(c->vc_cache); |
| c->vc_cache = sd_bus_message_ref(m); |
| } |
| |
| if (stat("/etc/vconsole.conf", &st) < 0) { |
| if (errno != ENOENT) |
| return -errno; |
| |
| c->vc_mtime = USEC_INFINITY; |
| context_free_vconsole(c); |
| return 0; |
| } |
| |
| /* If mtime is not changed, then we do not need to re-read */ |
| t = timespec_load(&st.st_mtim); |
| if (c->vc_mtime != USEC_INFINITY && t == c->vc_mtime) |
| return 0; |
| |
| c->vc_mtime = t; |
| context_free_vconsole(c); |
| |
| r = parse_env_file(NULL, "/etc/vconsole.conf", |
| "KEYMAP", &c->vc_keymap, |
| "KEYMAP_TOGGLE", &c->vc_keymap_toggle); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| int x11_read_data(Context *c, sd_bus_message *m) { |
| _cleanup_fclose_ FILE *f = NULL; |
| bool in_section = false; |
| struct stat st; |
| usec_t t; |
| int r; |
| |
| /* Do not try to re-read the file within single bus operation. */ |
| if (m) { |
| if (m == c->x11_cache) |
| return 0; |
| |
| sd_bus_message_unref(c->x11_cache); |
| c->x11_cache = sd_bus_message_ref(m); |
| } |
| |
| if (stat("/etc/X11/xorg.conf.d/00-keyboard.conf", &st) < 0) { |
| if (errno != ENOENT) |
| return -errno; |
| |
| c->x11_mtime = USEC_INFINITY; |
| context_free_x11(c); |
| return 0; |
| } |
| |
| /* If mtime is not changed, then we do not need to re-read */ |
| t = timespec_load(&st.st_mtim); |
| if (c->x11_mtime != USEC_INFINITY && t == c->x11_mtime) |
| return 0; |
| |
| c->x11_mtime = t; |
| context_free_x11(c); |
| |
| f = fopen("/etc/X11/xorg.conf.d/00-keyboard.conf", "re"); |
| if (!f) |
| return -errno; |
| |
| for (;;) { |
| _cleanup_free_ char *line = NULL; |
| char *l; |
| |
| r = read_line(f, LONG_LINE_MAX, &line); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| break; |
| |
| l = strstrip(line); |
| if (IN_SET(l[0], 0, '#')) |
| continue; |
| |
| if (in_section && first_word(l, "Option")) { |
| _cleanup_strv_free_ char **a = NULL; |
| |
| r = strv_split_full(&a, l, WHITESPACE, EXTRACT_UNQUOTE); |
| 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_and_replace(*p, a[2]); |
| } |
| |
| } else if (!in_section && first_word(l, "Section")) { |
| _cleanup_strv_free_ char **a = NULL; |
| |
| r = strv_split_full(&a, l, WHITESPACE, EXTRACT_UNQUOTE); |
| 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 locale_write_data(Context *c, char ***settings) { |
| _cleanup_strv_free_ char **l = NULL; |
| struct stat st; |
| int r; |
| |
| /* Set values will be returned as strv in *settings on success. */ |
| |
| for (LocaleVariable p = 0; p < _VARIABLE_LC_MAX; p++) |
| if (!isempty(c->locale[p])) { |
| r = strv_env_assign(&l, locale_variable_to_string(p), c->locale[p]); |
| if (r < 0) |
| return r; |
| } |
| |
| if (strv_isempty(l)) { |
| if (unlink("/etc/locale.conf") < 0) |
| return errno == ENOENT ? 0 : -errno; |
| |
| c->locale_mtime = USEC_INFINITY; |
| return 0; |
| } |
| |
| r = write_env_file_label("/etc/locale.conf", l); |
| if (r < 0) |
| return r; |
| |
| *settings = TAKE_PTR(l); |
| |
| if (stat("/etc/locale.conf", &st) >= 0) |
| c->locale_mtime = timespec_load(&st.st_mtim); |
| |
| return 0; |
| } |
| |
| int vconsole_write_data(Context *c) { |
| _cleanup_strv_free_ char **l = NULL; |
| struct stat st; |
| int r; |
| |
| r = load_env_file(NULL, "/etc/vconsole.conf", &l); |
| if (r < 0 && r != -ENOENT) |
| return r; |
| |
| r = strv_env_assign(&l, "KEYMAP", empty_to_null(c->vc_keymap)); |
| if (r < 0) |
| return r; |
| |
| r = strv_env_assign(&l, "KEYMAP_TOGGLE", empty_to_null(c->vc_keymap_toggle)); |
| if (r < 0) |
| return r; |
| |
| if (strv_isempty(l)) { |
| if (unlink("/etc/vconsole.conf") < 0) |
| return errno == ENOENT ? 0 : -errno; |
| |
| c->vc_mtime = USEC_INFINITY; |
| return 0; |
| } |
| |
| r = write_env_file_label("/etc/vconsole.conf", l); |
| if (r < 0) |
| return r; |
| |
| if (stat("/etc/vconsole.conf", &st) >= 0) |
| c->vc_mtime = timespec_load(&st.st_mtim); |
| |
| return 0; |
| } |
| |
| int x11_write_data(Context *c) { |
| _cleanup_fclose_ FILE *f = NULL; |
| _cleanup_free_ char *temp_path = NULL; |
| struct stat st; |
| 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; |
| |
| c->vc_mtime = USEC_INFINITY; |
| return 0; |
| } |
| |
| (void) 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; |
| |
| (void) fchmod(fileno(f), 0644); |
| |
| fputs("# Written by systemd-localed(8), read by systemd-localed and Xorg. It's\n" |
| "# probably wise not to edit this file manually. Use localectl(1) to\n" |
| "# instruct systemd-localed to update it.\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_sync_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; |
| } |
| |
| if (stat("/etc/X11/xorg.conf.d/00-keyboard.conf", &st) >= 0) |
| c->x11_mtime = timespec_load(&st.st_mtim); |
| |
| return 0; |
| |
| fail: |
| 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 (;;) { |
| _cleanup_free_ char *line = NULL; |
| size_t length; |
| char *l, **b; |
| int r; |
| |
| r = read_line(f, LONG_LINE_MAX, &line); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| break; |
| |
| (*n)++; |
| |
| l = strstrip(line); |
| if (IN_SET(l[0], 0, '#')) |
| continue; |
| |
| r = strv_split_full(&b, l, WHITESPACE, EXTRACT_UNQUOTE); |
| 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; |
| } |
| |
| return 0; |
| } |
| |
| 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, empty_or_dash_to_null(a[1])) || |
| !streq_ptr(c->x11_model, empty_or_dash_to_null(a[2])) || |
| !streq_ptr(c->x11_variant, empty_or_dash_to_null(a[3])) || |
| !streq_ptr(c->x11_options, empty_or_dash_to_null(a[4]))) { |
| |
| if (free_and_strdup(&c->x11_layout, empty_or_dash_to_null(a[1])) < 0 || |
| free_and_strdup(&c->x11_model, empty_or_dash_to_null(a[2])) < 0 || |
| free_and_strdup(&c->x11_variant, empty_or_dash_to_null(a[3])) < 0 || |
| free_and_strdup(&c->x11_options, empty_or_dash_to_null(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 = NULL; |
| |
| if (x11_variant) |
| n = strjoin(x11_layout, "-", x11_variant); |
| 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"); |
| pz = strjoin(dir, "xkb/", n, ".map.gz"); |
| 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 = TAKE_PTR(n); |
| return 1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int find_legacy_keymap(Context *c, char **ret) { |
| const char *map; |
| _cleanup_fclose_ FILE *f = NULL; |
| _cleanup_free_ char *new_keymap = 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 { |
| _cleanup_free_ char *x = NULL; |
| |
| /* If that didn't work, strip off the |
| * other layouts from the entry, too */ |
| x = strndup(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_and_replace(new_keymap, converted); |
| } |
| |
| *ret = TAKE_PTR(new_keymap); |
| return (bool) *ret; |
| } |
| |
| 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 = TAKE_PTR(a[1]); |
| 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 { |
| _cleanup_free_ 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_and_replace(c->vc_keymap, new_keymap); |
| c->vc_keymap_toggle = mfree(c->vc_keymap_toggle); |
| modified = true; |
| } |
| } |
| |
| 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; |
| } |
| |
| bool locale_gen_check_available(void) { |
| #if HAVE_LOCALEGEN |
| if (access(LOCALEGEN_PATH, X_OK) < 0) { |
| if (errno != ENOENT) |
| log_warning_errno(errno, "Unable to determine whether " LOCALEGEN_PATH " exists and is executable, assuming it is not: %m"); |
| return false; |
| } |
| if (access("/etc/locale.gen", F_OK) < 0) { |
| if (errno != ENOENT) |
| log_warning_errno(errno, "Unable to determine whether /etc/locale.gen exists, assuming it does not: %m"); |
| return false; |
| } |
| return true; |
| #else |
| return false; |
| #endif |
| } |
| |
| #if HAVE_LOCALEGEN |
| static bool locale_encoding_is_utf8_or_unspecified(const char *locale) { |
| const char *c = strchr(locale, '.'); |
| return !c || strcaseeq(c, ".UTF-8") || strcasestr(locale, ".UTF-8@"); |
| } |
| |
| static int locale_gen_locale_supported(const char *locale_entry) { |
| /* Returns an error valus <= 0 if the locale-gen entry is invalid or unsupported, |
| * 1 in case the locale entry is valid, and -EOPNOTSUPP specifically in case |
| * the distributor has not provided us with a SUPPORTED file to check |
| * locale for validity. */ |
| |
| _cleanup_fclose_ FILE *f = NULL; |
| int r; |
| |
| assert(locale_entry); |
| |
| /* Locale templates without country code are never supported */ |
| if (!strstr(locale_entry, "_")) |
| return -EINVAL; |
| |
| f = fopen("/usr/share/i18n/SUPPORTED", "re"); |
| if (!f) { |
| if (errno == ENOENT) |
| return log_debug_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), |
| "Unable to check validity of locale entry %s: /usr/share/i18n/SUPPORTED does not exist", |
| locale_entry); |
| return -errno; |
| } |
| |
| for (;;) { |
| _cleanup_free_ char *line = NULL; |
| |
| r = read_line(f, LONG_LINE_MAX, &line); |
| if (r < 0) |
| return log_debug_errno(r, "Failed to read /usr/share/i18n/SUPPORTED: %m"); |
| if (r == 0) |
| return 0; |
| |
| line = strstrip(line); |
| if (strcaseeq_ptr(line, locale_entry)) |
| return 1; |
| } |
| } |
| #endif |
| |
| int locale_gen_enable_locale(const char *locale) { |
| #if HAVE_LOCALEGEN |
| _cleanup_fclose_ FILE *fr = NULL, *fw = NULL; |
| _cleanup_(unlink_and_freep) char *temp_path = NULL; |
| _cleanup_free_ char *locale_entry = NULL; |
| bool locale_enabled = false, first_line = false; |
| bool write_new = false; |
| int r; |
| |
| if (isempty(locale)) |
| return 0; |
| |
| if (locale_encoding_is_utf8_or_unspecified(locale)) { |
| locale_entry = strjoin(locale, " UTF-8"); |
| if (!locale_entry) |
| return -ENOMEM; |
| } else |
| return -ENOEXEC; /* We do not process non-UTF-8 locale */ |
| |
| r = locale_gen_locale_supported(locale_entry); |
| if (r == 0) |
| return -EINVAL; |
| if (r < 0 && r != -EOPNOTSUPP) |
| return r; |
| |
| fr = fopen("/etc/locale.gen", "re"); |
| if (!fr) { |
| if (errno != ENOENT) |
| return -errno; |
| write_new = true; |
| } |
| |
| r = fopen_temporary("/etc/locale.gen", &fw, &temp_path); |
| if (r < 0) |
| return r; |
| |
| if (write_new) |
| (void) fchmod(fileno(fw), 0644); |
| else { |
| /* apply mode & xattrs of the original file to new file */ |
| r = copy_access(fileno(fr), fileno(fw)); |
| if (r < 0) |
| return r; |
| r = copy_xattr(fileno(fr), fileno(fw)); |
| if (r < 0) |
| return r; |
| } |
| |
| if (!write_new) { |
| /* The config file ends with a line break, which we do not want to include before potentially appending a new locale |
| * instead of uncommenting an existing line. By prepending linebreaks, we can avoid buffering this file but can still write |
| * a nice config file without empty lines */ |
| first_line = true; |
| for (;;) { |
| _cleanup_free_ char *line = NULL; |
| char *line_locale; |
| |
| r = read_line(fr, LONG_LINE_MAX, &line); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| break; |
| |
| if (locale_enabled) { |
| /* Just complete writing the file if the new locale was already enabled */ |
| if (!first_line) |
| fputc('\n', fw); |
| fputs(line, fw); |
| first_line = false; |
| continue; |
| } |
| |
| line = strstrip(line); |
| if (isempty(line)) { |
| fputc('\n', fw); |
| first_line = false; |
| continue; |
| } |
| |
| line_locale = line; |
| if (line_locale[0] == '#') |
| line_locale = strstrip(line_locale + 1); |
| else if (strcaseeq_ptr(line_locale, locale_entry)) |
| return 0; /* the file already had our locale activated, so skip updating it */ |
| |
| if (strcaseeq_ptr(line_locale, locale_entry)) { |
| /* Uncomment existing line for new locale */ |
| if (!first_line) |
| fputc('\n', fw); |
| fputs(locale_entry, fw); |
| locale_enabled = true; |
| first_line = false; |
| continue; |
| } |
| |
| /* The line was not for the locale we want to enable, just copy it */ |
| if (!first_line) |
| fputc('\n', fw); |
| fputs(line, fw); |
| first_line = false; |
| } |
| } |
| |
| /* Add locale to enable to the end of the file if it was not found as commented line */ |
| if (!locale_enabled) { |
| if (!write_new) |
| fputc('\n', fw); |
| fputs(locale_entry, fw); |
| } |
| fputc('\n', fw); |
| |
| r = fflush_sync_and_check(fw); |
| if (r < 0) |
| return r; |
| |
| if (rename(temp_path, "/etc/locale.gen") < 0) |
| return -errno; |
| temp_path = mfree(temp_path); |
| |
| return 0; |
| #else |
| return -EOPNOTSUPP; |
| #endif |
| } |
| |
| int locale_gen_run(void) { |
| #if HAVE_LOCALEGEN |
| pid_t pid; |
| int r; |
| |
| r = safe_fork("(sd-localegen)", FORK_RESET_SIGNALS|FORK_RLIMIT_NOFILE_SAFE|FORK_CLOSE_ALL_FDS|FORK_LOG|FORK_WAIT, &pid); |
| if (r < 0) |
| return r; |
| if (r == 0) { |
| execl(LOCALEGEN_PATH, LOCALEGEN_PATH, NULL); |
| _exit(EXIT_FAILURE); |
| } |
| |
| return 0; |
| #else |
| return -EOPNOTSUPP; |
| #endif |
| } |
