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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
75683450 | 2 | /*** |
75683450 | 3 | Copyright 2014 Lennart Poettering |
75683450 LP |
4 | ***/ |
5 | ||
11c3a366 TA |
6 | #include <dirent.h> |
7 | #include <errno.h> | |
8 | #include <fcntl.h> | |
ed457f13 | 9 | #include <ftw.h> |
8752c575 | 10 | #include <langinfo.h> |
11c3a366 | 11 | #include <libintl.h> |
8752c575 | 12 | #include <locale.h> |
11c3a366 TA |
13 | #include <stddef.h> |
14 | #include <stdint.h> | |
15 | #include <stdlib.h> | |
16 | #include <string.h> | |
75683450 | 17 | #include <sys/mman.h> |
11c3a366 | 18 | #include <sys/stat.h> |
75683450 | 19 | |
ed457f13 | 20 | #include "def.h" |
a0956174 | 21 | #include "dirent-util.h" |
3ffd4af2 | 22 | #include "fd-util.h" |
93cc7779 | 23 | #include "hashmap.h" |
3ffd4af2 | 24 | #include "locale-util.h" |
bb15fafe | 25 | #include "path-util.h" |
75683450 | 26 | #include "set.h" |
8b43440b | 27 | #include "string-table.h" |
07630cea | 28 | #include "string-util.h" |
75683450 | 29 | #include "strv.h" |
07630cea | 30 | #include "utf8.h" |
75683450 LP |
31 | |
32 | static int add_locales_from_archive(Set *locales) { | |
33 | /* Stolen from glibc... */ | |
34 | ||
35 | struct locarhead { | |
36 | uint32_t magic; | |
37 | /* Serial number. */ | |
38 | uint32_t serial; | |
39 | /* Name hash table. */ | |
40 | uint32_t namehash_offset; | |
41 | uint32_t namehash_used; | |
42 | uint32_t namehash_size; | |
43 | /* String table. */ | |
44 | uint32_t string_offset; | |
45 | uint32_t string_used; | |
46 | uint32_t string_size; | |
47 | /* Table with locale records. */ | |
48 | uint32_t locrectab_offset; | |
49 | uint32_t locrectab_used; | |
50 | uint32_t locrectab_size; | |
51 | /* MD5 sum hash table. */ | |
52 | uint32_t sumhash_offset; | |
53 | uint32_t sumhash_used; | |
54 | uint32_t sumhash_size; | |
55 | }; | |
56 | ||
57 | struct namehashent { | |
58 | /* Hash value of the name. */ | |
59 | uint32_t hashval; | |
60 | /* Offset of the name in the string table. */ | |
61 | uint32_t name_offset; | |
62 | /* Offset of the locale record. */ | |
63 | uint32_t locrec_offset; | |
64 | }; | |
65 | ||
66 | const struct locarhead *h; | |
67 | const struct namehashent *e; | |
68 | const void *p = MAP_FAILED; | |
69 | _cleanup_close_ int fd = -1; | |
70 | size_t sz = 0; | |
71 | struct stat st; | |
da6053d0 | 72 | size_t i; |
75683450 LP |
73 | int r; |
74 | ||
75 | fd = open("/usr/lib/locale/locale-archive", O_RDONLY|O_NOCTTY|O_CLOEXEC); | |
76 | if (fd < 0) | |
77 | return errno == ENOENT ? 0 : -errno; | |
78 | ||
79 | if (fstat(fd, &st) < 0) | |
80 | return -errno; | |
81 | ||
82 | if (!S_ISREG(st.st_mode)) | |
83 | return -EBADMSG; | |
84 | ||
85 | if (st.st_size < (off_t) sizeof(struct locarhead)) | |
86 | return -EBADMSG; | |
87 | ||
88 | p = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0); | |
89 | if (p == MAP_FAILED) | |
90 | return -errno; | |
91 | ||
92 | h = (const struct locarhead *) p; | |
93 | if (h->magic != 0xde020109 || | |
94 | h->namehash_offset + h->namehash_size > st.st_size || | |
95 | h->string_offset + h->string_size > st.st_size || | |
96 | h->locrectab_offset + h->locrectab_size > st.st_size || | |
97 | h->sumhash_offset + h->sumhash_size > st.st_size) { | |
98 | r = -EBADMSG; | |
99 | goto finish; | |
100 | } | |
101 | ||
102 | e = (const struct namehashent*) ((const uint8_t*) p + h->namehash_offset); | |
103 | for (i = 0; i < h->namehash_size; i++) { | |
104 | char *z; | |
105 | ||
106 | if (e[i].locrec_offset == 0) | |
107 | continue; | |
108 | ||
109 | if (!utf8_is_valid((char*) p + e[i].name_offset)) | |
110 | continue; | |
111 | ||
112 | z = strdup((char*) p + e[i].name_offset); | |
113 | if (!z) { | |
114 | r = -ENOMEM; | |
115 | goto finish; | |
116 | } | |
117 | ||
118 | r = set_consume(locales, z); | |
119 | if (r < 0) | |
120 | goto finish; | |
121 | } | |
122 | ||
123 | r = 0; | |
124 | ||
125 | finish: | |
126 | if (p != MAP_FAILED) | |
127 | munmap((void*) p, sz); | |
128 | ||
129 | return r; | |
130 | } | |
131 | ||
132 | static int add_locales_from_libdir (Set *locales) { | |
133 | _cleanup_closedir_ DIR *dir = NULL; | |
134 | struct dirent *entry; | |
135 | int r; | |
136 | ||
137 | dir = opendir("/usr/lib/locale"); | |
138 | if (!dir) | |
139 | return errno == ENOENT ? 0 : -errno; | |
140 | ||
141 | FOREACH_DIRENT(entry, dir, return -errno) { | |
142 | char *z; | |
143 | ||
331fb4ca EV |
144 | dirent_ensure_type(dir, entry); |
145 | ||
75683450 LP |
146 | if (entry->d_type != DT_DIR) |
147 | continue; | |
148 | ||
149 | z = strdup(entry->d_name); | |
150 | if (!z) | |
151 | return -ENOMEM; | |
152 | ||
153 | r = set_consume(locales, z); | |
154 | if (r < 0 && r != -EEXIST) | |
155 | return r; | |
156 | } | |
157 | ||
158 | return 0; | |
159 | } | |
160 | ||
161 | int get_locales(char ***ret) { | |
162 | _cleanup_set_free_ Set *locales = NULL; | |
163 | _cleanup_strv_free_ char **l = NULL; | |
164 | int r; | |
165 | ||
d5099efc | 166 | locales = set_new(&string_hash_ops); |
75683450 LP |
167 | if (!locales) |
168 | return -ENOMEM; | |
169 | ||
170 | r = add_locales_from_archive(locales); | |
171 | if (r < 0 && r != -ENOENT) | |
172 | return r; | |
173 | ||
174 | r = add_locales_from_libdir(locales); | |
175 | if (r < 0) | |
176 | return r; | |
177 | ||
178 | l = set_get_strv(locales); | |
179 | if (!l) | |
180 | return -ENOMEM; | |
181 | ||
182 | strv_sort(l); | |
183 | ||
1cc6c93a | 184 | *ret = TAKE_PTR(l); |
75683450 LP |
185 | |
186 | return 0; | |
187 | } | |
188 | ||
189 | bool locale_is_valid(const char *name) { | |
190 | ||
191 | if (isempty(name)) | |
192 | return false; | |
193 | ||
194 | if (strlen(name) >= 128) | |
195 | return false; | |
196 | ||
197 | if (!utf8_is_valid(name)) | |
198 | return false; | |
199 | ||
ae6c3cc0 | 200 | if (!filename_is_valid(name)) |
75683450 LP |
201 | return false; |
202 | ||
203 | if (!string_is_safe(name)) | |
204 | return false; | |
205 | ||
206 | return true; | |
207 | } | |
a3428668 | 208 | |
8752c575 LP |
209 | void init_gettext(void) { |
210 | setlocale(LC_ALL, ""); | |
211 | textdomain(GETTEXT_PACKAGE); | |
212 | } | |
213 | ||
214 | bool is_locale_utf8(void) { | |
215 | const char *set; | |
216 | static int cached_answer = -1; | |
217 | ||
218 | /* Note that we default to 'true' here, since today UTF8 is | |
219 | * pretty much supported everywhere. */ | |
220 | ||
221 | if (cached_answer >= 0) | |
222 | goto out; | |
223 | ||
224 | if (!setlocale(LC_ALL, "")) { | |
225 | cached_answer = true; | |
226 | goto out; | |
227 | } | |
228 | ||
229 | set = nl_langinfo(CODESET); | |
230 | if (!set) { | |
231 | cached_answer = true; | |
232 | goto out; | |
233 | } | |
234 | ||
235 | if (streq(set, "UTF-8")) { | |
236 | cached_answer = true; | |
237 | goto out; | |
238 | } | |
239 | ||
240 | /* For LC_CTYPE=="C" return true, because CTYPE is effectly | |
241 | * unset and everything can do to UTF-8 nowadays. */ | |
242 | set = setlocale(LC_CTYPE, NULL); | |
243 | if (!set) { | |
244 | cached_answer = true; | |
245 | goto out; | |
246 | } | |
247 | ||
248 | /* Check result, but ignore the result if C was set | |
249 | * explicitly. */ | |
250 | cached_answer = | |
251 | STR_IN_SET(set, "C", "POSIX") && | |
252 | !getenv("LC_ALL") && | |
253 | !getenv("LC_CTYPE") && | |
254 | !getenv("LANG"); | |
255 | ||
256 | out: | |
257 | return (bool) cached_answer; | |
258 | } | |
259 | ||
ed457f13 TB |
260 | static thread_local Set *keymaps = NULL; |
261 | ||
262 | static int nftw_cb( | |
263 | const char *fpath, | |
264 | const struct stat *sb, | |
265 | int tflag, | |
266 | struct FTW *ftwbuf) { | |
267 | ||
268 | char *p, *e; | |
269 | int r; | |
270 | ||
271 | if (tflag != FTW_F) | |
272 | return 0; | |
273 | ||
274 | if (!endswith(fpath, ".map") && | |
275 | !endswith(fpath, ".map.gz")) | |
276 | return 0; | |
277 | ||
278 | p = strdup(basename(fpath)); | |
279 | if (!p) | |
280 | return FTW_STOP; | |
281 | ||
282 | e = endswith(p, ".map"); | |
283 | if (e) | |
284 | *e = 0; | |
285 | ||
286 | e = endswith(p, ".map.gz"); | |
287 | if (e) | |
288 | *e = 0; | |
289 | ||
290 | r = set_consume(keymaps, p); | |
291 | if (r < 0 && r != -EEXIST) | |
292 | return r; | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | int get_keymaps(char ***ret) { | |
298 | _cleanup_strv_free_ char **l = NULL; | |
299 | const char *dir; | |
300 | int r; | |
301 | ||
302 | keymaps = set_new(&string_hash_ops); | |
303 | if (!keymaps) | |
304 | return -ENOMEM; | |
305 | ||
306 | NULSTR_FOREACH(dir, KBD_KEYMAP_DIRS) { | |
16dc38dd | 307 | r = nftw(dir, nftw_cb, 20, FTW_PHYS|FTW_ACTIONRETVAL); |
ed457f13 TB |
308 | |
309 | if (r == FTW_STOP) | |
310 | log_debug("Directory not found %s", dir); | |
311 | else if (r < 0) | |
312 | log_debug_errno(r, "Can't add keymap: %m"); | |
313 | } | |
314 | ||
315 | l = set_get_strv(keymaps); | |
316 | if (!l) { | |
317 | set_free_free(keymaps); | |
318 | return -ENOMEM; | |
319 | } | |
320 | ||
321 | set_free(keymaps); | |
322 | ||
323 | if (strv_isempty(l)) | |
324 | return -ENOENT; | |
325 | ||
326 | strv_sort(l); | |
327 | ||
ae2a15bc | 328 | *ret = TAKE_PTR(l); |
ed457f13 TB |
329 | |
330 | return 0; | |
331 | } | |
332 | ||
333 | bool keymap_is_valid(const char *name) { | |
334 | ||
335 | if (isempty(name)) | |
336 | return false; | |
337 | ||
338 | if (strlen(name) >= 128) | |
339 | return false; | |
340 | ||
341 | if (!utf8_is_valid(name)) | |
342 | return false; | |
343 | ||
344 | if (!filename_is_valid(name)) | |
345 | return false; | |
346 | ||
347 | if (!string_is_safe(name)) | |
348 | return false; | |
349 | ||
350 | return true; | |
351 | } | |
8752c575 | 352 | |
323b7dc9 ZJS |
353 | const char *special_glyph(SpecialGlyph code) { |
354 | ||
5d01f5dc LP |
355 | /* A list of a number of interesting unicode glyphs we can use to decorate our output. It's probably wise to be |
356 | * conservative here, and primarily stick to the glyphs defined in the eurlatgr font, so that display still | |
357 | * works reasonably well on the Linux console. For details see: | |
358 | * | |
359 | * http://git.altlinux.org/people/legion/packages/kbd.git?p=kbd.git;a=blob;f=data/consolefonts/README.eurlatgr | |
360 | */ | |
361 | ||
dff4bf93 | 362 | static const char* const draw_table[2][_SPECIAL_GLYPH_MAX] = { |
323b7dc9 ZJS |
363 | /* ASCII fallback */ |
364 | [false] = { | |
365 | [TREE_VERTICAL] = "| ", | |
366 | [TREE_BRANCH] = "|-", | |
367 | [TREE_RIGHT] = "`-", | |
368 | [TREE_SPACE] = " ", | |
369 | [TRIANGULAR_BULLET] = ">", | |
370 | [BLACK_CIRCLE] = "*", | |
371 | [ARROW] = "->", | |
372 | [MDASH] = "-", | |
b77f5e27 | 373 | [ELLIPSIS] = "..." |
8752c575 LP |
374 | }, |
375 | ||
323b7dc9 | 376 | /* UTF-8 */ |
b77f5e27 | 377 | [true] = { |
323b7dc9 ZJS |
378 | [TREE_VERTICAL] = "\342\224\202 ", /* │ */ |
379 | [TREE_BRANCH] = "\342\224\234\342\224\200", /* ├─ */ | |
380 | [TREE_RIGHT] = "\342\224\224\342\224\200", /* └─ */ | |
381 | [TREE_SPACE] = " ", /* */ | |
382 | [TRIANGULAR_BULLET] = "\342\200\243", /* ‣ */ | |
383 | [BLACK_CIRCLE] = "\342\227\217", /* ● */ | |
384 | [ARROW] = "\342\206\222", /* → */ | |
385 | [MDASH] = "\342\200\223", /* – */ | |
b77f5e27 | 386 | [ELLIPSIS] = "\342\200\246", /* … */ |
323b7dc9 | 387 | }, |
8752c575 LP |
388 | }; |
389 | ||
323b7dc9 | 390 | return draw_table[is_locale_utf8()][code]; |
8752c575 LP |
391 | } |
392 | ||
a3428668 MS |
393 | static const char * const locale_variable_table[_VARIABLE_LC_MAX] = { |
394 | [VARIABLE_LANG] = "LANG", | |
395 | [VARIABLE_LANGUAGE] = "LANGUAGE", | |
396 | [VARIABLE_LC_CTYPE] = "LC_CTYPE", | |
397 | [VARIABLE_LC_NUMERIC] = "LC_NUMERIC", | |
398 | [VARIABLE_LC_TIME] = "LC_TIME", | |
399 | [VARIABLE_LC_COLLATE] = "LC_COLLATE", | |
400 | [VARIABLE_LC_MONETARY] = "LC_MONETARY", | |
401 | [VARIABLE_LC_MESSAGES] = "LC_MESSAGES", | |
402 | [VARIABLE_LC_PAPER] = "LC_PAPER", | |
403 | [VARIABLE_LC_NAME] = "LC_NAME", | |
404 | [VARIABLE_LC_ADDRESS] = "LC_ADDRESS", | |
405 | [VARIABLE_LC_TELEPHONE] = "LC_TELEPHONE", | |
406 | [VARIABLE_LC_MEASUREMENT] = "LC_MEASUREMENT", | |
407 | [VARIABLE_LC_IDENTIFICATION] = "LC_IDENTIFICATION" | |
408 | }; | |
409 | ||
410 | DEFINE_STRING_TABLE_LOOKUP(locale_variable, LocaleVariable); |