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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
75683450 | 2 | |
11c3a366 TA |
3 | #include <errno.h> |
4 | #include <fcntl.h> | |
ed457f13 | 5 | #include <ftw.h> |
8752c575 | 6 | #include <langinfo.h> |
11c3a366 | 7 | #include <libintl.h> |
11c3a366 TA |
8 | #include <stddef.h> |
9 | #include <stdint.h> | |
10 | #include <stdlib.h> | |
75683450 | 11 | #include <sys/mman.h> |
11c3a366 | 12 | #include <sys/stat.h> |
75683450 | 13 | |
ed457f13 | 14 | #include "def.h" |
a0956174 | 15 | #include "dirent-util.h" |
5f1b0cc6 | 16 | #include "env-util.h" |
3ffd4af2 | 17 | #include "fd-util.h" |
93cc7779 | 18 | #include "hashmap.h" |
3ffd4af2 | 19 | #include "locale-util.h" |
bb15fafe | 20 | #include "path-util.h" |
75683450 | 21 | #include "set.h" |
8b43440b | 22 | #include "string-table.h" |
07630cea | 23 | #include "string-util.h" |
75683450 | 24 | #include "strv.h" |
07630cea | 25 | #include "utf8.h" |
75683450 | 26 | |
13f45806 LP |
27 | static char *normalize_locale(const char *name) { |
28 | const char *e; | |
29 | ||
30 | /* Locale names are weird: glibc has some magic rules when looking for the charset name on disk: it | |
31 | * lowercases everything, and removes most special chars. This means the official .UTF-8 suffix | |
32 | * becomes .utf8 when looking things up on disk. When enumerating locales, let's do the reverse | |
33 | * operation, and go back to ".UTF-8" which appears to be the more commonly accepted name. We only do | |
34 | * that for UTF-8 however, since it's kinda the only charset that matters. */ | |
35 | ||
36 | e = endswith(name, ".utf8"); | |
37 | if (e) { | |
38 | _cleanup_free_ char *prefix = NULL; | |
39 | ||
40 | prefix = strndup(name, e - name); | |
41 | if (!prefix) | |
42 | return NULL; | |
43 | ||
44 | return strjoin(prefix, ".UTF-8"); | |
45 | } | |
46 | ||
47 | e = strstr(name, ".utf8@"); | |
48 | if (e) { | |
49 | _cleanup_free_ char *prefix = NULL; | |
50 | ||
51 | prefix = strndup(name, e - name); | |
52 | if (!prefix) | |
53 | return NULL; | |
54 | ||
55 | return strjoin(prefix, ".UTF-8@", e + 6); | |
56 | } | |
57 | ||
58 | return strdup(name); | |
59 | } | |
60 | ||
75683450 LP |
61 | static int add_locales_from_archive(Set *locales) { |
62 | /* Stolen from glibc... */ | |
63 | ||
64 | struct locarhead { | |
65 | uint32_t magic; | |
66 | /* Serial number. */ | |
67 | uint32_t serial; | |
68 | /* Name hash table. */ | |
69 | uint32_t namehash_offset; | |
70 | uint32_t namehash_used; | |
71 | uint32_t namehash_size; | |
72 | /* String table. */ | |
73 | uint32_t string_offset; | |
74 | uint32_t string_used; | |
75 | uint32_t string_size; | |
76 | /* Table with locale records. */ | |
77 | uint32_t locrectab_offset; | |
78 | uint32_t locrectab_used; | |
79 | uint32_t locrectab_size; | |
80 | /* MD5 sum hash table. */ | |
81 | uint32_t sumhash_offset; | |
82 | uint32_t sumhash_used; | |
83 | uint32_t sumhash_size; | |
84 | }; | |
85 | ||
86 | struct namehashent { | |
87 | /* Hash value of the name. */ | |
88 | uint32_t hashval; | |
89 | /* Offset of the name in the string table. */ | |
90 | uint32_t name_offset; | |
91 | /* Offset of the locale record. */ | |
92 | uint32_t locrec_offset; | |
93 | }; | |
94 | ||
95 | const struct locarhead *h; | |
96 | const struct namehashent *e; | |
97 | const void *p = MAP_FAILED; | |
98 | _cleanup_close_ int fd = -1; | |
99 | size_t sz = 0; | |
100 | struct stat st; | |
da6053d0 | 101 | size_t i; |
75683450 LP |
102 | int r; |
103 | ||
104 | fd = open("/usr/lib/locale/locale-archive", O_RDONLY|O_NOCTTY|O_CLOEXEC); | |
105 | if (fd < 0) | |
106 | return errno == ENOENT ? 0 : -errno; | |
107 | ||
108 | if (fstat(fd, &st) < 0) | |
109 | return -errno; | |
110 | ||
111 | if (!S_ISREG(st.st_mode)) | |
112 | return -EBADMSG; | |
113 | ||
114 | if (st.st_size < (off_t) sizeof(struct locarhead)) | |
115 | return -EBADMSG; | |
116 | ||
117 | p = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0); | |
118 | if (p == MAP_FAILED) | |
119 | return -errno; | |
120 | ||
121 | h = (const struct locarhead *) p; | |
122 | if (h->magic != 0xde020109 || | |
123 | h->namehash_offset + h->namehash_size > st.st_size || | |
124 | h->string_offset + h->string_size > st.st_size || | |
125 | h->locrectab_offset + h->locrectab_size > st.st_size || | |
126 | h->sumhash_offset + h->sumhash_size > st.st_size) { | |
127 | r = -EBADMSG; | |
128 | goto finish; | |
129 | } | |
130 | ||
131 | e = (const struct namehashent*) ((const uint8_t*) p + h->namehash_offset); | |
132 | for (i = 0; i < h->namehash_size; i++) { | |
133 | char *z; | |
134 | ||
135 | if (e[i].locrec_offset == 0) | |
136 | continue; | |
137 | ||
138 | if (!utf8_is_valid((char*) p + e[i].name_offset)) | |
139 | continue; | |
140 | ||
13f45806 | 141 | z = normalize_locale((char*) p + e[i].name_offset); |
75683450 LP |
142 | if (!z) { |
143 | r = -ENOMEM; | |
144 | goto finish; | |
145 | } | |
146 | ||
147 | r = set_consume(locales, z); | |
148 | if (r < 0) | |
149 | goto finish; | |
150 | } | |
151 | ||
152 | r = 0; | |
153 | ||
154 | finish: | |
155 | if (p != MAP_FAILED) | |
156 | munmap((void*) p, sz); | |
157 | ||
158 | return r; | |
159 | } | |
160 | ||
161 | static int add_locales_from_libdir (Set *locales) { | |
162 | _cleanup_closedir_ DIR *dir = NULL; | |
163 | struct dirent *entry; | |
164 | int r; | |
165 | ||
166 | dir = opendir("/usr/lib/locale"); | |
167 | if (!dir) | |
168 | return errno == ENOENT ? 0 : -errno; | |
169 | ||
170 | FOREACH_DIRENT(entry, dir, return -errno) { | |
171 | char *z; | |
172 | ||
331fb4ca EV |
173 | dirent_ensure_type(dir, entry); |
174 | ||
75683450 LP |
175 | if (entry->d_type != DT_DIR) |
176 | continue; | |
177 | ||
13f45806 | 178 | z = normalize_locale(entry->d_name); |
75683450 LP |
179 | if (!z) |
180 | return -ENOMEM; | |
181 | ||
182 | r = set_consume(locales, z); | |
183 | if (r < 0 && r != -EEXIST) | |
184 | return r; | |
185 | } | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
190 | int get_locales(char ***ret) { | |
191 | _cleanup_set_free_ Set *locales = NULL; | |
192 | _cleanup_strv_free_ char **l = NULL; | |
193 | int r; | |
194 | ||
d5099efc | 195 | locales = set_new(&string_hash_ops); |
75683450 LP |
196 | if (!locales) |
197 | return -ENOMEM; | |
198 | ||
199 | r = add_locales_from_archive(locales); | |
200 | if (r < 0 && r != -ENOENT) | |
201 | return r; | |
202 | ||
203 | r = add_locales_from_libdir(locales); | |
204 | if (r < 0) | |
205 | return r; | |
206 | ||
207 | l = set_get_strv(locales); | |
208 | if (!l) | |
209 | return -ENOMEM; | |
210 | ||
a7d9fccd LP |
211 | r = getenv_bool("SYSTEMD_LIST_NON_UTF8_LOCALES"); |
212 | if (r == -ENXIO || r == 0) { | |
213 | char **a, **b; | |
214 | ||
215 | /* Filter out non-UTF-8 locales, because it's 2019, by default */ | |
216 | for (a = b = l; *a; a++) { | |
217 | ||
218 | if (endswith(*a, "UTF-8") || | |
219 | strstr(*a, ".UTF-8@")) | |
220 | *(b++) = *a; | |
221 | else | |
222 | free(*a); | |
223 | } | |
224 | ||
225 | *b = NULL; | |
226 | ||
227 | } else if (r < 0) | |
228 | log_debug_errno(r, "Failed to parse $SYSTEMD_LIST_NON_UTF8_LOCALES as boolean"); | |
229 | ||
75683450 LP |
230 | strv_sort(l); |
231 | ||
1cc6c93a | 232 | *ret = TAKE_PTR(l); |
75683450 LP |
233 | |
234 | return 0; | |
235 | } | |
236 | ||
237 | bool locale_is_valid(const char *name) { | |
238 | ||
239 | if (isempty(name)) | |
240 | return false; | |
241 | ||
242 | if (strlen(name) >= 128) | |
243 | return false; | |
244 | ||
245 | if (!utf8_is_valid(name)) | |
246 | return false; | |
247 | ||
ae6c3cc0 | 248 | if (!filename_is_valid(name)) |
75683450 LP |
249 | return false; |
250 | ||
251 | if (!string_is_safe(name)) | |
252 | return false; | |
253 | ||
254 | return true; | |
255 | } | |
a3428668 | 256 | |
8752c575 LP |
257 | void init_gettext(void) { |
258 | setlocale(LC_ALL, ""); | |
259 | textdomain(GETTEXT_PACKAGE); | |
260 | } | |
261 | ||
262 | bool is_locale_utf8(void) { | |
263 | const char *set; | |
264 | static int cached_answer = -1; | |
265 | ||
266 | /* Note that we default to 'true' here, since today UTF8 is | |
267 | * pretty much supported everywhere. */ | |
268 | ||
269 | if (cached_answer >= 0) | |
270 | goto out; | |
271 | ||
272 | if (!setlocale(LC_ALL, "")) { | |
273 | cached_answer = true; | |
274 | goto out; | |
275 | } | |
276 | ||
277 | set = nl_langinfo(CODESET); | |
278 | if (!set) { | |
279 | cached_answer = true; | |
280 | goto out; | |
281 | } | |
282 | ||
283 | if (streq(set, "UTF-8")) { | |
284 | cached_answer = true; | |
285 | goto out; | |
286 | } | |
287 | ||
5238e957 | 288 | /* For LC_CTYPE=="C" return true, because CTYPE is effectively |
8752c575 LP |
289 | * unset and everything can do to UTF-8 nowadays. */ |
290 | set = setlocale(LC_CTYPE, NULL); | |
291 | if (!set) { | |
292 | cached_answer = true; | |
293 | goto out; | |
294 | } | |
295 | ||
296 | /* Check result, but ignore the result if C was set | |
297 | * explicitly. */ | |
298 | cached_answer = | |
299 | STR_IN_SET(set, "C", "POSIX") && | |
300 | !getenv("LC_ALL") && | |
301 | !getenv("LC_CTYPE") && | |
302 | !getenv("LANG"); | |
303 | ||
304 | out: | |
305 | return (bool) cached_answer; | |
306 | } | |
307 | ||
5f1b0cc6 LP |
308 | static bool emoji_enabled(void) { |
309 | static int cached_emoji_enabled = -1; | |
310 | ||
311 | if (cached_emoji_enabled < 0) { | |
312 | int val; | |
313 | ||
314 | val = getenv_bool("SYSTEMD_EMOJI"); | |
315 | if (val < 0) | |
316 | cached_emoji_enabled = | |
317 | is_locale_utf8() && | |
318 | !STRPTR_IN_SET(getenv("TERM"), "dumb", "linux"); | |
319 | else | |
320 | cached_emoji_enabled = val; | |
321 | } | |
322 | ||
323 | return cached_emoji_enabled; | |
324 | } | |
325 | ||
323b7dc9 ZJS |
326 | const char *special_glyph(SpecialGlyph code) { |
327 | ||
5d01f5dc LP |
328 | /* A list of a number of interesting unicode glyphs we can use to decorate our output. It's probably wise to be |
329 | * conservative here, and primarily stick to the glyphs defined in the eurlatgr font, so that display still | |
330 | * works reasonably well on the Linux console. For details see: | |
331 | * | |
332 | * http://git.altlinux.org/people/legion/packages/kbd.git?p=kbd.git;a=blob;f=data/consolefonts/README.eurlatgr | |
333 | */ | |
334 | ||
dff4bf93 | 335 | static const char* const draw_table[2][_SPECIAL_GLYPH_MAX] = { |
323b7dc9 ZJS |
336 | /* ASCII fallback */ |
337 | [false] = { | |
9a6f746f LP |
338 | [SPECIAL_GLYPH_TREE_VERTICAL] = "| ", |
339 | [SPECIAL_GLYPH_TREE_BRANCH] = "|-", | |
340 | [SPECIAL_GLYPH_TREE_RIGHT] = "`-", | |
341 | [SPECIAL_GLYPH_TREE_SPACE] = " ", | |
342 | [SPECIAL_GLYPH_TRIANGULAR_BULLET] = ">", | |
343 | [SPECIAL_GLYPH_BLACK_CIRCLE] = "*", | |
344 | [SPECIAL_GLYPH_BULLET] = "*", | |
345 | [SPECIAL_GLYPH_ARROW] = "->", | |
346 | [SPECIAL_GLYPH_MDASH] = "-", | |
347 | [SPECIAL_GLYPH_ELLIPSIS] = "...", | |
348 | [SPECIAL_GLYPH_MU] = "u", | |
349 | [SPECIAL_GLYPH_CHECK_MARK] = "+", | |
350 | [SPECIAL_GLYPH_CROSS_MARK] = "-", | |
351 | [SPECIAL_GLYPH_ECSTATIC_SMILEY] = ":-]", | |
352 | [SPECIAL_GLYPH_HAPPY_SMILEY] = ":-}", | |
353 | [SPECIAL_GLYPH_SLIGHTLY_HAPPY_SMILEY] = ":-)", | |
354 | [SPECIAL_GLYPH_NEUTRAL_SMILEY] = ":-|", | |
355 | [SPECIAL_GLYPH_SLIGHTLY_UNHAPPY_SMILEY] = ":-(", | |
de520006 | 356 | [SPECIAL_GLYPH_UNHAPPY_SMILEY] = ":-{", |
9a6f746f | 357 | [SPECIAL_GLYPH_DEPRESSED_SMILEY] = ":-[", |
8752c575 LP |
358 | }, |
359 | ||
323b7dc9 | 360 | /* UTF-8 */ |
b77f5e27 | 361 | [true] = { |
9a6f746f LP |
362 | [SPECIAL_GLYPH_TREE_VERTICAL] = "\342\224\202 ", /* │ */ |
363 | [SPECIAL_GLYPH_TREE_BRANCH] = "\342\224\234\342\224\200", /* ├─ */ | |
364 | [SPECIAL_GLYPH_TREE_RIGHT] = "\342\224\224\342\224\200", /* └─ */ | |
365 | [SPECIAL_GLYPH_TREE_SPACE] = " ", /* */ | |
366 | [SPECIAL_GLYPH_TRIANGULAR_BULLET] = "\342\200\243", /* ‣ */ | |
367 | [SPECIAL_GLYPH_BLACK_CIRCLE] = "\342\227\217", /* ● */ | |
368 | [SPECIAL_GLYPH_BULLET] = "\342\200\242", /* • */ | |
369 | [SPECIAL_GLYPH_ARROW] = "\342\206\222", /* → */ | |
370 | [SPECIAL_GLYPH_MDASH] = "\342\200\223", /* – */ | |
371 | [SPECIAL_GLYPH_ELLIPSIS] = "\342\200\246", /* … */ | |
372 | [SPECIAL_GLYPH_MU] = "\316\274", /* μ */ | |
373 | [SPECIAL_GLYPH_CHECK_MARK] = "\342\234\223", /* ✓ */ | |
374 | [SPECIAL_GLYPH_CROSS_MARK] = "\342\234\227", /* ✗ */ | |
375 | [SPECIAL_GLYPH_ECSTATIC_SMILEY] = "\360\237\230\207", /* 😇 */ | |
376 | [SPECIAL_GLYPH_HAPPY_SMILEY] = "\360\237\230\200", /* 😀 */ | |
377 | [SPECIAL_GLYPH_SLIGHTLY_HAPPY_SMILEY] = "\360\237\231\202", /* 🙂 */ | |
378 | [SPECIAL_GLYPH_NEUTRAL_SMILEY] = "\360\237\230\220", /* 😐 */ | |
379 | [SPECIAL_GLYPH_SLIGHTLY_UNHAPPY_SMILEY] = "\360\237\231\201", /* 🙁 */ | |
5e13bcdd | 380 | [SPECIAL_GLYPH_UNHAPPY_SMILEY] = "\360\237\230\250", /* 😨 */ |
9a6f746f | 381 | [SPECIAL_GLYPH_DEPRESSED_SMILEY] = "\360\237\244\242", /* 🤢 */ |
323b7dc9 | 382 | }, |
8752c575 LP |
383 | }; |
384 | ||
5f1b0cc6 LP |
385 | assert(code < _SPECIAL_GLYPH_MAX); |
386 | ||
387 | return draw_table[code >= _SPECIAL_GLYPH_FIRST_SMILEY ? emoji_enabled() : is_locale_utf8()][code]; | |
8752c575 LP |
388 | } |
389 | ||
f2a3de01 | 390 | void locale_variables_free(char *l[_VARIABLE_LC_MAX]) { |
e6755a33 LP |
391 | LocaleVariable i; |
392 | ||
393 | if (!l) | |
394 | return; | |
395 | ||
396 | for (i = 0; i < _VARIABLE_LC_MAX; i++) | |
397 | l[i] = mfree(l[i]); | |
398 | } | |
399 | ||
a3428668 MS |
400 | static const char * const locale_variable_table[_VARIABLE_LC_MAX] = { |
401 | [VARIABLE_LANG] = "LANG", | |
402 | [VARIABLE_LANGUAGE] = "LANGUAGE", | |
403 | [VARIABLE_LC_CTYPE] = "LC_CTYPE", | |
404 | [VARIABLE_LC_NUMERIC] = "LC_NUMERIC", | |
405 | [VARIABLE_LC_TIME] = "LC_TIME", | |
406 | [VARIABLE_LC_COLLATE] = "LC_COLLATE", | |
407 | [VARIABLE_LC_MONETARY] = "LC_MONETARY", | |
408 | [VARIABLE_LC_MESSAGES] = "LC_MESSAGES", | |
409 | [VARIABLE_LC_PAPER] = "LC_PAPER", | |
410 | [VARIABLE_LC_NAME] = "LC_NAME", | |
411 | [VARIABLE_LC_ADDRESS] = "LC_ADDRESS", | |
412 | [VARIABLE_LC_TELEPHONE] = "LC_TELEPHONE", | |
413 | [VARIABLE_LC_MEASUREMENT] = "LC_MEASUREMENT", | |
414 | [VARIABLE_LC_IDENTIFICATION] = "LC_IDENTIFICATION" | |
415 | }; | |
416 | ||
417 | DEFINE_STRING_TABLE_LOOKUP(locale_variable, LocaleVariable); |