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