| /* 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 "localed-util.h" |
| #include "macro.h" |
| #include "mkdir-label.h" |
| #include "nulstr-util.h" |
| #include "process-util.h" |
| #include "stat-util.h" |
| #include "string-util.h" |
| #include "strv.h" |
| #include "tmpfile-util.h" |
| |
| static bool startswith_comma(const char *s, const char *prefix) { |
| assert(s); |
| assert(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; |
| } |
| |
| void x11_context_clear(X11Context *xc) { |
| assert(xc); |
| |
| xc->layout = mfree(xc->layout); |
| xc->options = mfree(xc->options); |
| xc->model = mfree(xc->model); |
| xc->variant = mfree(xc->variant); |
| } |
| |
| void x11_context_replace(X11Context *dest, X11Context *src) { |
| assert(dest); |
| assert(src); |
| |
| x11_context_clear(dest); |
| *dest = *src; |
| *src = (X11Context) {}; |
| } |
| |
| bool x11_context_isempty(const X11Context *xc) { |
| assert(xc); |
| |
| return |
| isempty(xc->layout) && |
| isempty(xc->model) && |
| isempty(xc->variant) && |
| isempty(xc->options); |
| } |
| |
| void x11_context_empty_to_null(X11Context *xc) { |
| assert(xc); |
| |
| /* Do not call x11_context_clear() for the passed object. */ |
| |
| xc->layout = empty_to_null(xc->layout); |
| xc->model = empty_to_null(xc->model); |
| xc->variant = empty_to_null(xc->variant); |
| xc->options = empty_to_null(xc->options); |
| } |
| |
| bool x11_context_is_safe(const X11Context *xc) { |
| assert(xc); |
| |
| return |
| (!xc->layout || string_is_safe(xc->layout)) && |
| (!xc->model || string_is_safe(xc->model)) && |
| (!xc->variant || string_is_safe(xc->variant)) && |
| (!xc->options || string_is_safe(xc->options)); |
| } |
| |
| bool x11_context_equal(const X11Context *a, const X11Context *b) { |
| assert(a); |
| assert(b); |
| |
| return |
| streq_ptr(a->layout, b->layout) && |
| streq_ptr(a->model, b->model) && |
| streq_ptr(a->variant, b->variant) && |
| streq_ptr(a->options, b->options); |
| } |
| |
| int x11_context_copy(X11Context *dest, const X11Context *src) { |
| bool modified; |
| int r; |
| |
| assert(dest); |
| |
| if (dest == src) |
| return 0; |
| |
| if (!src) { |
| modified = !x11_context_isempty(dest); |
| x11_context_clear(dest); |
| return modified; |
| } |
| |
| r = free_and_strdup(&dest->layout, src->layout); |
| if (r < 0) |
| return r; |
| modified = r > 0; |
| |
| r = free_and_strdup(&dest->model, src->model); |
| if (r < 0) |
| return r; |
| modified = modified || r > 0; |
| |
| r = free_and_strdup(&dest->variant, src->variant); |
| if (r < 0) |
| return r; |
| modified = modified || r > 0; |
| |
| r = free_and_strdup(&dest->options, src->options); |
| if (r < 0) |
| return r; |
| modified = modified || r > 0; |
| |
| return modified; |
| } |
| |
| void vc_context_clear(VCContext *vc) { |
| assert(vc); |
| |
| vc->keymap = mfree(vc->keymap); |
| vc->toggle = mfree(vc->toggle); |
| } |
| |
| void vc_context_replace(VCContext *dest, VCContext *src) { |
| assert(dest); |
| assert(src); |
| |
| vc_context_clear(dest); |
| *dest = *src; |
| *src = (VCContext) {}; |
| } |
| |
| bool vc_context_isempty(const VCContext *vc) { |
| assert(vc); |
| |
| return |
| isempty(vc->keymap) && |
| isempty(vc->toggle); |
| } |
| |
| void vc_context_empty_to_null(VCContext *vc) { |
| assert(vc); |
| |
| /* Do not call vc_context_clear() for the passed object. */ |
| |
| vc->keymap = empty_to_null(vc->keymap); |
| vc->toggle = empty_to_null(vc->toggle); |
| } |
| |
| bool vc_context_equal(const VCContext *a, const VCContext *b) { |
| assert(a); |
| assert(b); |
| |
| return |
| streq_ptr(a->keymap, b->keymap) && |
| streq_ptr(a->toggle, b->toggle); |
| } |
| |
| int vc_context_copy(VCContext *dest, const VCContext *src) { |
| bool modified; |
| int r; |
| |
| assert(dest); |
| |
| if (dest == src) |
| return 0; |
| |
| if (!src) { |
| modified = !vc_context_isempty(dest); |
| vc_context_clear(dest); |
| return modified; |
| } |
| |
| r = free_and_strdup(&dest->keymap, src->keymap); |
| if (r < 0) |
| return r; |
| modified = r > 0; |
| |
| r = free_and_strdup(&dest->toggle, src->toggle); |
| if (r < 0) |
| return r; |
| modified = modified || r > 0; |
| |
| return modified; |
| } |
| |
| void context_clear(Context *c) { |
| assert(c); |
| |
| locale_context_clear(&c->locale_context); |
| x11_context_clear(&c->x11_from_xorg); |
| x11_context_clear(&c->x11_from_vc); |
| vc_context_clear(&c->vc); |
| |
| c->locale_cache = sd_bus_message_unref(c->locale_cache); |
| c->x11_cache = sd_bus_message_unref(c->x11_cache); |
| c->vc_cache = sd_bus_message_unref(c->vc_cache); |
| |
| c->polkit_registry = bus_verify_polkit_async_registry_free(c->polkit_registry); |
| }; |
| |
| X11Context *context_get_x11_context(Context *c) { |
| assert(c); |
| |
| if (!x11_context_isempty(&c->x11_from_vc)) |
| return &c->x11_from_vc; |
| |
| if (!x11_context_isempty(&c->x11_from_xorg)) |
| return &c->x11_from_xorg; |
| |
| return &c->x11_from_vc; |
| } |
| |
| int locale_read_data(Context *c, sd_bus_message *m) { |
| assert(c); |
| |
| /* 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); |
| } |
| |
| return locale_context_load(&c->locale_context, LOCALE_LOAD_LOCALE_CONF | LOCALE_LOAD_ENVIRONMENT | LOCALE_LOAD_SIMPLIFY); |
| } |
| |
| int vconsole_read_data(Context *c, sd_bus_message *m) { |
| _cleanup_close_ int fd = -EBADF; |
| struct stat st; |
| |
| assert(c); |
| |
| /* 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); |
| } |
| |
| fd = RET_NERRNO(open("/etc/vconsole.conf", O_CLOEXEC | O_PATH)); |
| if (fd == -ENOENT) { |
| c->vc_stat = (struct stat) {}; |
| vc_context_clear(&c->vc); |
| x11_context_clear(&c->x11_from_vc); |
| return 0; |
| } |
| if (fd < 0) |
| return fd; |
| |
| if (fstat(fd, &st) < 0) |
| return -errno; |
| |
| /* If the file is not changed, then we do not need to re-read */ |
| if (stat_inode_unmodified(&c->vc_stat, &st)) |
| return 0; |
| |
| c->vc_stat = st; |
| vc_context_clear(&c->vc); |
| x11_context_clear(&c->x11_from_vc); |
| |
| return parse_env_file_fd(fd, "/etc/vconsole.conf", |
| "KEYMAP", &c->vc.keymap, |
| "KEYMAP_TOGGLE", &c->vc.toggle, |
| "XKBLAYOUT", &c->x11_from_vc.layout, |
| "XKBMODEL", &c->x11_from_vc.model, |
| "XKBVARIANT", &c->x11_from_vc.variant, |
| "XKBOPTIONS", &c->x11_from_vc.options); |
| } |
| |
| int x11_read_data(Context *c, sd_bus_message *m) { |
| _cleanup_close_ int fd = -EBADF, fd_ro = -EBADF; |
| _cleanup_fclose_ FILE *f = NULL; |
| bool in_section = false; |
| struct stat st; |
| int r; |
| |
| assert(c); |
| |
| /* 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); |
| } |
| |
| fd = RET_NERRNO(open("/etc/X11/xorg.conf.d/00-keyboard.conf", O_CLOEXEC | O_PATH)); |
| if (fd == -ENOENT) { |
| c->x11_stat = (struct stat) {}; |
| x11_context_clear(&c->x11_from_xorg); |
| return 0; |
| } |
| if (fd < 0) |
| return fd; |
| |
| if (fstat(fd, &st) < 0) |
| return -errno; |
| |
| /* If the file is not changed, then we do not need to re-read */ |
| if (stat_inode_unmodified(&c->x11_stat, &st)) |
| return 0; |
| |
| c->x11_stat = st; |
| x11_context_clear(&c->x11_from_xorg); |
| |
| fd_ro = fd_reopen(fd, O_CLOEXEC | O_RDONLY); |
| if (fd_ro < 0) |
| return fd_ro; |
| |
| f = fdopen(fd_ro, "re"); |
| if (!f) |
| return -errno; |
| |
| TAKE_FD(fd_ro); |
| |
| 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_from_xorg.layout; |
| else if (streq(a[1], "XkbModel")) |
| p = &c->x11_from_xorg.model; |
| else if (streq(a[1], "XkbVariant")) |
| p = &c->x11_from_xorg.variant; |
| else if (streq(a[1], "XkbOptions")) |
| p = &c->x11_from_xorg.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 vconsole_write_data(Context *c) { |
| _cleanup_strv_free_ char **l = NULL; |
| const X11Context *xc; |
| int r; |
| |
| assert(c); |
| |
| xc = context_get_x11_context(c); |
| |
| 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.toggle)); |
| if (r < 0) |
| return r; |
| |
| r = strv_env_assign(&l, "XKBLAYOUT", empty_to_null(xc->layout)); |
| if (r < 0) |
| return r; |
| |
| r = strv_env_assign(&l, "XKBMODEL", empty_to_null(xc->model)); |
| if (r < 0) |
| return r; |
| |
| r = strv_env_assign(&l, "XKBVARIANT", empty_to_null(xc->variant)); |
| if (r < 0) |
| return r; |
| |
| r = strv_env_assign(&l, "XKBOPTIONS", empty_to_null(xc->options)); |
| if (r < 0) |
| return r; |
| |
| if (strv_isempty(l)) { |
| if (unlink("/etc/vconsole.conf") < 0) |
| return errno == ENOENT ? 0 : -errno; |
| |
| c->vc_stat = (struct stat) {}; |
| return 0; |
| } |
| |
| r = write_env_file_label("/etc/vconsole.conf", l); |
| if (r < 0) |
| return r; |
| |
| if (stat("/etc/vconsole.conf", &c->vc_stat) < 0) |
| return -errno; |
| |
| return 0; |
| } |
| |
| int x11_write_data(Context *c) { |
| _cleanup_fclose_ FILE *f = NULL; |
| _cleanup_(unlink_and_freep) char *temp_path = NULL; |
| const X11Context *xc; |
| int r; |
| |
| assert(c); |
| |
| xc = context_get_x11_context(c); |
| if (x11_context_isempty(xc)) { |
| if (unlink("/etc/X11/xorg.conf.d/00-keyboard.conf") < 0) |
| return errno == ENOENT ? 0 : -errno; |
| |
| c->x11_stat = (struct stat) {}; |
| 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(xc->layout)) |
| fprintf(f, " Option \"XkbLayout\" \"%s\"\n", xc->layout); |
| |
| if (!isempty(xc->model)) |
| fprintf(f, " Option \"XkbModel\" \"%s\"\n", xc->model); |
| |
| if (!isempty(xc->variant)) |
| fprintf(f, " Option \"XkbVariant\" \"%s\"\n", xc->variant); |
| |
| if (!isempty(xc->options)) |
| fprintf(f, " Option \"XkbOptions\" \"%s\"\n", xc->options); |
| |
| fputs("EndSection\n", f); |
| |
| r = fflush_sync_and_check(f); |
| if (r < 0) |
| return r; |
| |
| if (rename(temp_path, "/etc/X11/xorg.conf.d/00-keyboard.conf") < 0) |
| return -errno; |
| |
| if (stat("/etc/X11/xorg.conf.d/00-keyboard.conf", &c->x11_stat) < 0) |
| return -errno; |
| |
| return 0; |
| } |
| |
| static int read_next_mapping( |
| const char *filename, |
| unsigned min_fields, |
| unsigned max_fields, |
| FILE *f, |
| unsigned *n, |
| char ***ret) { |
| |
| assert(f); |
| assert(n); |
| assert(ret); |
| |
| for (;;) { |
| _cleanup_strv_free_ char **b = NULL; |
| _cleanup_free_ char *line = NULL; |
| size_t length; |
| const char *l; |
| 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_debug("Invalid line %s:%u, ignoring.", strna(filename), *n); |
| continue; |
| |
| } |
| |
| *ret = TAKE_PTR(b); |
| return 1; |
| } |
| |
| *ret = NULL; |
| return 0; |
| } |
| |
| int vconsole_convert_to_x11(const VCContext *vc, X11Context *ret) { |
| _cleanup_fclose_ FILE *f = NULL; |
| const char *map; |
| int r; |
| |
| assert(vc); |
| assert(ret); |
| |
| if (isempty(vc->keymap)) { |
| *ret = (X11Context) {}; |
| return 0; |
| } |
| |
| map = systemd_kbd_model_map(); |
| f = fopen(map, "re"); |
| if (!f) |
| return -errno; |
| |
| for (unsigned n = 0;;) { |
| _cleanup_strv_free_ char **a = NULL; |
| |
| r = read_next_mapping(map, 5, UINT_MAX, f, &n, &a); |
| if (r < 0) |
| return r; |
| if (r == 0) { |
| *ret = (X11Context) {}; |
| return 0; |
| } |
| |
| if (!streq(vc->keymap, a[0])) |
| continue; |
| |
| return x11_context_copy(ret, |
| &(X11Context) { |
| .layout = empty_or_dash_to_null(a[1]), |
| .model = empty_or_dash_to_null(a[2]), |
| .variant = empty_or_dash_to_null(a[3]), |
| .options = empty_or_dash_to_null(a[4]), |
| }); |
| } |
| } |
| |
| int find_converted_keymap(const X11Context *xc, char **ret) { |
| _cleanup_free_ char *n = NULL; |
| |
| assert(xc); |
| assert(!isempty(xc->layout)); |
| assert(ret); |
| |
| if (xc->variant) |
| n = strjoin(xc->layout, "-", xc->variant); |
| else |
| n = strdup(xc->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); |
| *ret = TAKE_PTR(n); |
| return 1; |
| } |
| } |
| |
| *ret = NULL; |
| return 0; |
| } |
| |
| int find_legacy_keymap(const X11Context *xc, char **ret) { |
| const char *map; |
| _cleanup_fclose_ FILE *f = NULL; |
| _cleanup_free_ char *new_keymap = NULL; |
| unsigned best_matching = 0; |
| int r; |
| |
| assert(xc); |
| assert(!isempty(xc->layout)); |
| |
| map = systemd_kbd_model_map(); |
| f = fopen(map, "re"); |
| if (!f) |
| return -errno; |
| |
| for (unsigned n = 0;;) { |
| _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(xc->layout, a[1])) |
| /* If we got an exact match, this is the 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(xc->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 = strdupcspn(a[1], ","); |
| if (!x) |
| return -ENOMEM; |
| if (startswith_comma(xc->layout, x)) |
| matching = 1; |
| } |
| } |
| |
| if (matching > 0) { |
| if (isempty(xc->model) || streq_ptr(xc->model, a[2])) { |
| matching++; |
| |
| if (streq_ptr(xc->variant, a[3])) { |
| matching++; |
| |
| if (streq_ptr(xc->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 && !isempty(xc->layout)) { |
| _cleanup_free_ char *l = NULL, *v = NULL, *converted = NULL; |
| |
| /* 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. |
| */ |
| |
| l = strndup(xc->layout, strcspn(xc->layout, ",")); |
| if (!l) |
| return -ENOMEM; |
| |
| if (!isempty(xc->variant)) { |
| v = strndup(xc->variant, strcspn(xc->variant, ",")); |
| if (!v) |
| return -ENOMEM; |
| } |
| |
| r = find_converted_keymap( |
| &(X11Context) { |
| .layout = l, |
| .variant = v, |
| }, |
| &converted); |
| if (r < 0) |
| return r; |
| if (r > 0) |
| free_and_replace(new_keymap, converted); |
| } |
| |
| *ret = TAKE_PTR(new_keymap); |
| return !!*ret; |
| } |
| |
| int find_language_fallback(const char *lang, char **ret) { |
| const char *map; |
| _cleanup_fclose_ FILE *f = NULL; |
| unsigned n = 0; |
| int r; |
| |
| assert(lang); |
| assert(ret); |
| |
| map = systemd_language_fallback_map(); |
| f = fopen(map, "re"); |
| if (!f) |
| return -errno; |
| |
| for (;;) { |
| _cleanup_strv_free_ char **a = NULL; |
| |
| 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); |
| *ret = TAKE_PTR(a[1]); |
| return 1; |
| } |
| } |
| } |
| |
| int x11_convert_to_vconsole(const X11Context *xc, VCContext *ret) { |
| _cleanup_free_ char *keymap = NULL; |
| int r; |
| |
| assert(xc); |
| assert(ret); |
| |
| if (isempty(xc->layout)) { |
| *ret = (VCContext) {}; |
| return 0; |
| } |
| |
| r = find_converted_keymap(xc, &keymap); |
| if (r == 0) |
| r = find_legacy_keymap(xc, &keymap); |
| if (r < 0) |
| return r; |
| |
| *ret = (VCContext) { |
| .keymap = TAKE_PTR(keymap), |
| }; |
| return 0; |
| } |
| |
| 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), COPY_ALL_XATTRS); |
| if (r < 0) |
| log_debug_errno(r, "Failed to copy all xattrs from old to new /etc/locale.gen file, ignoring: %m"); |
| } |
| |
| 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 |
| } |
