| 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 | |
