blob: d21d06e73790d38ba25791ac545cad7007471447
1 | /* |
2 | * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> |
3 | * Released under the terms of the GNU GPL v2.0. |
4 | */ |
5 | |
6 | #include <sys/stat.h> |
7 | #include <ctype.h> |
8 | #include <stdio.h> |
9 | #include <stdlib.h> |
10 | #include <string.h> |
11 | #include <time.h> |
12 | #include <unistd.h> |
13 | |
14 | #define LKC_DIRECT_LINK |
15 | #include "lkc.h" |
16 | |
17 | static void conf_warning(const char *fmt, ...) |
18 | __attribute__ ((format (printf, 1, 2))); |
19 | |
20 | static const char *conf_filename; |
21 | static int conf_lineno, conf_warnings, conf_unsaved; |
22 | |
23 | const char conf_def_filename[] = ".config"; |
24 | |
25 | const char conf_defname[] = "/dev/null"; //bbox |
26 | |
27 | const char *conf_confnames[] = { |
28 | conf_def_filename, |
29 | conf_defname, |
30 | NULL, |
31 | }; |
32 | |
33 | static void conf_warning(const char *fmt, ...) |
34 | { |
35 | va_list ap; |
36 | va_start(ap, fmt); |
37 | fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno); |
38 | vfprintf(stderr, fmt, ap); |
39 | fprintf(stderr, "\n"); |
40 | va_end(ap); |
41 | conf_warnings++; |
42 | } |
43 | |
44 | static char *conf_expand_value(const char *in) |
45 | { |
46 | struct symbol *sym; |
47 | const char *src; |
48 | static char res_value[SYMBOL_MAXLENGTH]; |
49 | char *dst, name[SYMBOL_MAXLENGTH]; |
50 | |
51 | res_value[0] = 0; |
52 | dst = name; |
53 | while ((src = strchr(in, '$'))) { |
54 | strncat(res_value, in, src - in); |
55 | src++; |
56 | dst = name; |
57 | while (isalnum(*src) || *src == '_') |
58 | *dst++ = *src++; |
59 | *dst = 0; |
60 | sym = sym_lookup(name, 0); |
61 | sym_calc_value(sym); |
62 | strcat(res_value, sym_get_string_value(sym)); |
63 | in = src; |
64 | } |
65 | strcat(res_value, in); |
66 | |
67 | return res_value; |
68 | } |
69 | |
70 | char *conf_get_default_confname(void) |
71 | { |
72 | struct stat buf; |
73 | static char *fullname = NULL; |
74 | char *env, *name; |
75 | |
76 | name = conf_expand_value(conf_defname); |
77 | env = getenv(SRCTREE); |
78 | if (env) { |
79 | fullname = realloc(fullname, strlen(env) + strlen(name) + 2); |
80 | sprintf(fullname, "%s/%s", env, name); |
81 | if (!stat(fullname, &buf)) |
82 | return fullname; |
83 | } |
84 | return name; |
85 | } |
86 | |
87 | int conf_read_simple(const char *name) |
88 | { |
89 | FILE *in = NULL; |
90 | char line[1024]; |
91 | char *p, *p2; |
92 | struct symbol *sym; |
93 | int i; |
94 | |
95 | if (name) { |
96 | in = zconf_fopen(name); |
97 | } else { |
98 | const char **names = conf_confnames; |
99 | while ((name = *names++)) { |
100 | name = conf_expand_value(name); |
101 | in = zconf_fopen(name); |
102 | if (in) { |
103 | printf(_("#\n" |
104 | "# using defaults found in %s\n" |
105 | "#\n"), name); |
106 | break; |
107 | } |
108 | } |
109 | } |
110 | if (!in) |
111 | return 1; |
112 | |
113 | conf_filename = name; |
114 | conf_lineno = 0; |
115 | conf_warnings = 0; |
116 | conf_unsaved = 0; |
117 | |
118 | for_all_symbols(i, sym) { |
119 | sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED; |
120 | if (sym_is_choice(sym)) |
121 | sym->flags &= ~SYMBOL_NEW; |
122 | sym->flags &= ~SYMBOL_VALID; |
123 | switch (sym->type) { |
124 | case S_INT: |
125 | case S_HEX: |
126 | case S_STRING: |
127 | if (sym->user.val) |
128 | free(sym->user.val); |
129 | default: |
130 | sym->user.val = NULL; |
131 | sym->user.tri = no; |
132 | } |
133 | } |
134 | |
135 | while (fgets(line, sizeof(line), in)) { |
136 | conf_lineno++; |
137 | sym = NULL; |
138 | switch (line[0]) { |
139 | case '#': |
140 | if (memcmp(line + 2, "CONFIG_", 7)) |
141 | continue; |
142 | p = strchr(line + 9, ' '); |
143 | if (!p) |
144 | continue; |
145 | *p++ = 0; |
146 | if (strncmp(p, "is not set", 10)) |
147 | continue; |
148 | sym = sym_find(line + 9); |
149 | if (!sym) { |
150 | conf_warning("trying to assign nonexistent symbol %s", line + 9); |
151 | break; |
152 | } else if (!(sym->flags & SYMBOL_NEW)) { |
153 | conf_warning("trying to reassign symbol %s", sym->name); |
154 | break; |
155 | } |
156 | switch (sym->type) { |
157 | case S_BOOLEAN: |
158 | case S_TRISTATE: |
159 | sym->user.tri = no; |
160 | sym->flags &= ~SYMBOL_NEW; |
161 | break; |
162 | default: |
163 | ; |
164 | } |
165 | break; |
166 | case 'C': |
167 | if (memcmp(line, "CONFIG_", 7)) { |
168 | conf_warning("unexpected data"); |
169 | continue; |
170 | } |
171 | p = strchr(line + 7, '='); |
172 | if (!p) |
173 | continue; |
174 | *p++ = 0; |
175 | p2 = strchr(p, '\n'); |
176 | if (p2) |
177 | *p2 = 0; |
178 | sym = sym_find(line + 7); |
179 | if (!sym) { |
180 | conf_warning("trying to assign nonexistent symbol %s", line + 7); |
181 | break; |
182 | } else if (!(sym->flags & SYMBOL_NEW)) { |
183 | conf_warning("trying to reassign symbol %s", sym->name); |
184 | break; |
185 | } |
186 | switch (sym->type) { |
187 | case S_TRISTATE: |
188 | if (p[0] == 'm') { |
189 | sym->user.tri = mod; |
190 | sym->flags &= ~SYMBOL_NEW; |
191 | break; |
192 | } |
193 | case S_BOOLEAN: |
194 | if (p[0] == 'y') { |
195 | sym->user.tri = yes; |
196 | sym->flags &= ~SYMBOL_NEW; |
197 | break; |
198 | } |
199 | if (p[0] == 'n') { |
200 | sym->user.tri = no; |
201 | sym->flags &= ~SYMBOL_NEW; |
202 | break; |
203 | } |
204 | conf_warning("symbol value '%s' invalid for %s", p, sym->name); |
205 | break; |
206 | case S_STRING: |
207 | if (*p++ != '"') |
208 | break; |
209 | for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) { |
210 | if (*p2 == '"') { |
211 | *p2 = 0; |
212 | break; |
213 | } |
214 | memmove(p2, p2 + 1, strlen(p2)); |
215 | } |
216 | if (!p2) { |
217 | conf_warning("invalid string found"); |
218 | continue; |
219 | } |
220 | case S_INT: |
221 | case S_HEX: |
222 | if (sym_string_valid(sym, p)) { |
223 | sym->user.val = strdup(p); |
224 | sym->flags &= ~SYMBOL_NEW; |
225 | } else { |
226 | if (p[0]) /* bbox */ |
227 | conf_warning("symbol value '%s' invalid for %s", p, sym->name); |
228 | continue; |
229 | } |
230 | break; |
231 | default: |
232 | ; |
233 | } |
234 | break; |
235 | case '\n': |
236 | break; |
237 | default: |
238 | conf_warning("unexpected data"); |
239 | continue; |
240 | } |
241 | if (sym && sym_is_choice_value(sym)) { |
242 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); |
243 | switch (sym->user.tri) { |
244 | case no: |
245 | break; |
246 | case mod: |
247 | if (cs->user.tri == yes) { |
248 | conf_warning("%s creates inconsistent choice state", sym->name); |
249 | cs->flags |= SYMBOL_NEW; |
250 | } |
251 | break; |
252 | case yes: |
253 | if (cs->user.tri != no) { |
254 | conf_warning("%s creates inconsistent choice state", sym->name); |
255 | cs->flags |= SYMBOL_NEW; |
256 | } else |
257 | cs->user.val = sym; |
258 | break; |
259 | } |
260 | cs->user.tri = E_OR(cs->user.tri, sym->user.tri); |
261 | } |
262 | } |
263 | fclose(in); |
264 | |
265 | if (modules_sym) |
266 | sym_calc_value(modules_sym); |
267 | return 0; |
268 | } |
269 | |
270 | int conf_read(const char *name) |
271 | { |
272 | struct symbol *sym; |
273 | struct property *prop; |
274 | struct expr *e; |
275 | int i; |
276 | |
277 | if (conf_read_simple(name)) |
278 | return 1; |
279 | |
280 | for_all_symbols(i, sym) { |
281 | sym_calc_value(sym); |
282 | if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO)) |
283 | goto sym_ok; |
284 | if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) { |
285 | /* check that calculated value agrees with saved value */ |
286 | switch (sym->type) { |
287 | case S_BOOLEAN: |
288 | case S_TRISTATE: |
289 | if (sym->user.tri != sym_get_tristate_value(sym)) |
290 | break; |
291 | if (!sym_is_choice(sym)) |
292 | goto sym_ok; |
293 | default: |
294 | if (!strcmp(sym->curr.val, sym->user.val)) |
295 | goto sym_ok; |
296 | break; |
297 | } |
298 | } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE)) |
299 | /* no previous value and not saved */ |
300 | goto sym_ok; |
301 | conf_unsaved++; |
302 | /* maybe print value in verbose mode... */ |
303 | sym_ok: |
304 | if (sym_has_value(sym) && !sym_is_choice_value(sym)) { |
305 | if (sym->visible == no) |
306 | sym->flags |= SYMBOL_NEW; |
307 | switch (sym->type) { |
308 | case S_STRING: |
309 | case S_INT: |
310 | case S_HEX: |
311 | if (!sym_string_within_range(sym, sym->user.val)) { |
312 | sym->flags |= SYMBOL_NEW; |
313 | sym->flags &= ~SYMBOL_VALID; |
314 | } |
315 | default: |
316 | break; |
317 | } |
318 | } |
319 | if (!sym_is_choice(sym)) |
320 | continue; |
321 | prop = sym_get_choice_prop(sym); |
322 | for (e = prop->expr; e; e = e->left.expr) |
323 | if (e->right.sym->visible != no) |
324 | sym->flags |= e->right.sym->flags & SYMBOL_NEW; |
325 | } |
326 | |
327 | sym_change_count = conf_warnings || conf_unsaved; |
328 | |
329 | return 0; |
330 | } |
331 | |
332 | int conf_write(const char *name) |
333 | { |
334 | FILE *out, *out_h; |
335 | struct symbol *sym; |
336 | struct menu *menu; |
337 | const char *basename; |
338 | char dirname[128], tmpname[128], newname[128]; |
339 | int type, l; |
340 | const char *str; |
341 | time_t now; |
342 | int use_timestamp = 1; |
343 | char *env; |
344 | |
345 | dirname[0] = 0; |
346 | if (name && name[0]) { |
347 | struct stat st; |
348 | char *slash; |
349 | |
350 | if (!stat(name, &st) && S_ISDIR(st.st_mode)) { |
351 | strcpy(dirname, name); |
352 | strcat(dirname, "/"); |
353 | basename = conf_def_filename; |
354 | } else if ((slash = strrchr(name, '/'))) { |
355 | int size = slash - name + 1; |
356 | memcpy(dirname, name, size); |
357 | dirname[size] = 0; |
358 | if (slash[1]) |
359 | basename = slash + 1; |
360 | else |
361 | basename = conf_def_filename; |
362 | } else |
363 | basename = name; |
364 | } else |
365 | basename = conf_def_filename; |
366 | |
367 | sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid()); |
368 | out = fopen(newname, "w"); |
369 | if (!out) |
370 | return 1; |
371 | out_h = NULL; |
372 | if (!name) { |
373 | out_h = fopen(".tmpconfig.h", "w"); |
374 | if (!out_h) |
375 | return 1; |
376 | file_write_dep(NULL); |
377 | } |
378 | sym = sym_lookup("KERNELVERSION", 0); |
379 | sym_calc_value(sym); |
380 | time(&now); |
381 | env = getenv("KCONFIG_NOTIMESTAMP"); |
382 | if (env && *env) |
383 | use_timestamp = 0; |
384 | |
385 | fprintf(out, _("#\n" |
386 | "# Automatically generated make config: don't edit\n" |
387 | "# Busybox version: %s\n" |
388 | "%s%s" |
389 | "#\n"), |
390 | sym_get_string_value(sym), |
391 | use_timestamp ? "# " : "", |
392 | use_timestamp ? ctime(&now) : ""); |
393 | if (out_h) { |
394 | char buf[sizeof("#define AUTOCONF_TIMESTAMP " |
395 | "\"YYYY-MM-DD HH:MM some_timezone\"\n")]; |
396 | buf[0] = '\0'; |
397 | if (use_timestamp) { |
398 | size_t ret = \ |
399 | strftime(buf, sizeof(buf), "#define AUTOCONF_TIMESTAMP " |
400 | "\"%Y-%m-%d %H:%M %z\"\n", localtime(&now)); |
401 | /* if user has Factory timezone or some other odd install, the |
402 | * %Z above will overflow the string leaving us with undefined |
403 | * results ... so let's try again without the timezone. |
404 | */ |
405 | if (ret == 0) |
406 | strftime(buf, sizeof(buf), "#define AUTOCONF_TIMESTAMP " |
407 | "\"%Y-%m-%d %H:%M\"\n", localtime(&now)); |
408 | } else { /* bbox */ |
409 | strcpy(buf, "#define AUTOCONF_TIMESTAMP \"\"\n"); |
410 | } |
411 | fprintf(out_h, "/*\n" |
412 | " * Automatically generated C config: don't edit\n" |
413 | " * Busybox version: %s\n" |
414 | " */\n" |
415 | "%s" |
416 | "\n", |
417 | sym_get_string_value(sym), |
418 | buf); |
419 | } |
420 | if (!sym_change_count) |
421 | sym_clear_all_valid(); |
422 | |
423 | menu = rootmenu.list; |
424 | while (menu) { |
425 | sym = menu->sym; |
426 | if (!sym) { |
427 | if (!menu_is_visible(menu)) |
428 | goto next; |
429 | str = menu_get_prompt(menu); |
430 | fprintf(out, "\n" |
431 | "#\n" |
432 | "# %s\n" |
433 | "#\n", str); |
434 | if (out_h) |
435 | fprintf(out_h, "\n" |
436 | "/*\n" |
437 | " * %s\n" |
438 | " */\n", str); |
439 | } else if (!(sym->flags & SYMBOL_CHOICE)) { |
440 | sym_calc_value(sym); |
441 | /* bbox: we want to see all syms |
442 | if (!(sym->flags & SYMBOL_WRITE)) |
443 | goto next; |
444 | */ |
445 | sym->flags &= ~SYMBOL_WRITE; |
446 | type = sym->type; |
447 | if (type == S_TRISTATE) { |
448 | sym_calc_value(modules_sym); |
449 | if (modules_sym->curr.tri == no) |
450 | type = S_BOOLEAN; |
451 | } |
452 | switch (type) { |
453 | case S_BOOLEAN: |
454 | case S_TRISTATE: |
455 | switch (sym_get_tristate_value(sym)) { |
456 | case no: |
457 | fprintf(out, "# CONFIG_%s is not set\n", sym->name); |
458 | if (out_h) { |
459 | fprintf(out_h, "#undef CONFIG_%s\n", sym->name); |
460 | /* bbox */ |
461 | fprintf(out_h, "#define ENABLE_%s 0\n", sym->name); |
462 | fprintf(out_h, "#define IF_%s(...)\n", sym->name); |
463 | fprintf(out_h, "#define IF_NOT_%s(...) __VA_ARGS__\n", sym->name); |
464 | } |
465 | break; |
466 | case mod: |
467 | fprintf(out, "CONFIG_%s=m\n", sym->name); |
468 | if (out_h) |
469 | fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name); |
470 | break; |
471 | case yes: |
472 | fprintf(out, "CONFIG_%s=y\n", sym->name); |
473 | if (out_h) { |
474 | fprintf(out_h, "#define CONFIG_%s 1\n", sym->name); |
475 | /* bbox */ |
476 | fprintf(out_h, "#define ENABLE_%s 1\n", sym->name); |
477 | fprintf(out_h, "#ifdef MAKE_SUID\n"); |
478 | fprintf(out_h, "# define IF_%s(...) __VA_ARGS__ \"CONFIG_%s\"\n", sym->name, sym->name); |
479 | fprintf(out_h, "#else\n"); |
480 | fprintf(out_h, "# define IF_%s(...) __VA_ARGS__\n", sym->name); |
481 | fprintf(out_h, "#endif\n"); |
482 | fprintf(out_h, "#define IF_NOT_%s(...)\n", sym->name); |
483 | } |
484 | break; |
485 | } |
486 | break; |
487 | case S_STRING: |
488 | // fix me |
489 | str = sym_get_string_value(sym); |
490 | fprintf(out, "CONFIG_%s=\"", sym->name); |
491 | if (out_h) |
492 | fprintf(out_h, "#define CONFIG_%s \"", sym->name); |
493 | do { |
494 | l = strcspn(str, "\"\\"); |
495 | if (l) { |
496 | fwrite(str, l, 1, out); |
497 | if (out_h) |
498 | fwrite(str, l, 1, out_h); |
499 | } |
500 | str += l; |
501 | while (*str == '\\' || *str == '"') { |
502 | fprintf(out, "\\%c", *str); |
503 | if (out_h) |
504 | fprintf(out_h, "\\%c", *str); |
505 | str++; |
506 | } |
507 | } while (*str); |
508 | fputs("\"\n", out); |
509 | if (out_h) { |
510 | fputs("\"\n", out_h); |
511 | /* bbox */ |
512 | fprintf(out_h, "#define ENABLE_%s 1\n", sym->name); |
513 | fprintf(out_h, "#ifdef MAKE_SUID\n"); |
514 | fprintf(out_h, "# define IF_%s(...) __VA_ARGS__ \"CONFIG_%s\"\n", sym->name, sym->name); |
515 | fprintf(out_h, "#else\n"); |
516 | fprintf(out_h, "# define IF_%s(...) __VA_ARGS__\n", sym->name); |
517 | fprintf(out_h, "#endif\n"); |
518 | fprintf(out_h, "#define IF_NOT_%s(...)\n", sym->name); |
519 | } |
520 | break; |
521 | case S_HEX: |
522 | str = sym_get_string_value(sym); |
523 | if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) { |
524 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); |
525 | if (out_h) { |
526 | fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str); |
527 | /* bbox */ |
528 | fprintf(out_h, "#define ENABLE_%s 1\n", sym->name); |
529 | fprintf(out_h, "#ifdef MAKE_SUID\n"); |
530 | fprintf(out_h, "# define IF_%s(...) __VA_ARGS__ \"CONFIG_%s\"\n", sym->name, sym->name); |
531 | fprintf(out_h, "#else\n"); |
532 | fprintf(out_h, "# define IF_%s(...) __VA_ARGS__\n", sym->name); |
533 | fprintf(out_h, "#endif\n"); |
534 | fprintf(out_h, "#define IF_NOT_%s(...)\n", sym->name); |
535 | } |
536 | break; |
537 | } |
538 | case S_INT: |
539 | str = sym_get_string_value(sym); |
540 | if (!str[0]) |
541 | str = "0"; |
542 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); |
543 | if (out_h) { |
544 | fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str); |
545 | /* bbox */ |
546 | fprintf(out_h, "#define ENABLE_%s 1\n", sym->name); |
547 | fprintf(out_h, "#ifdef MAKE_SUID\n"); |
548 | fprintf(out_h, "# define IF_%s(...) __VA_ARGS__ \"CONFIG_%s\"\n", sym->name, sym->name); |
549 | fprintf(out_h, "#else\n"); |
550 | fprintf(out_h, "# define IF_%s(...) __VA_ARGS__\n", sym->name); |
551 | fprintf(out_h, "#endif\n"); |
552 | fprintf(out_h, "#define IF_NOT_%s(...)\n", sym->name); |
553 | } |
554 | break; |
555 | } |
556 | } |
557 | |
558 | next: |
559 | if (menu->list) { |
560 | menu = menu->list; |
561 | continue; |
562 | } |
563 | if (menu->next) |
564 | menu = menu->next; |
565 | else while ((menu = menu->parent)) { |
566 | if (menu->next) { |
567 | menu = menu->next; |
568 | break; |
569 | } |
570 | } |
571 | } |
572 | fclose(out); |
573 | if (out_h) { |
574 | fclose(out_h); |
575 | rename(".tmpconfig.h", "include/autoconf.h"); |
576 | } |
577 | if (!name || basename != conf_def_filename) { |
578 | if (!name) |
579 | name = conf_def_filename; |
580 | sprintf(tmpname, "%s.old", name); |
581 | rename(name, tmpname); |
582 | } |
583 | sprintf(tmpname, "%s%s", dirname, basename); |
584 | if (rename(newname, tmpname)) |
585 | return 1; |
586 | |
587 | sym_change_count = 0; |
588 | |
589 | return 0; |
590 | } |
591 |