1 /* 2 * WPA Supplicant / Configuration parser and common functions 3 * Copyright (c) 2003-2012, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "utils/uuid.h" 13 #include "crypto/sha1.h" 14 #include "rsn_supp/wpa.h" 15 #include "eap_peer/eap.h" 16 #include "p2p/p2p.h" 17 #include "config.h" 18 19 20 #if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE) 21 #define NO_CONFIG_WRITE 22 #endif 23 24 /* 25 * Structure for network configuration parsing. This data is used to implement 26 * a generic parser for each network block variable. The table of configuration 27 * variables is defined below in this file (ssid_fields[]). 28 */ 29 struct parse_data { 30 /* Configuration variable name */ 31 char *name; 32 33 /* Parser function for this variable */ 34 int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid, 35 int line, const char *value); 36 37 #ifndef NO_CONFIG_WRITE 38 /* Writer function (i.e., to get the variable in text format from 39 * internal presentation). */ 40 char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid); 41 #endif /* NO_CONFIG_WRITE */ 42 43 /* Variable specific parameters for the parser. */ 44 void *param1, *param2, *param3, *param4; 45 46 /* 0 = this variable can be included in debug output and ctrl_iface 47 * 1 = this variable contains key/private data and it must not be 48 * included in debug output unless explicitly requested. In 49 * addition, this variable will not be readable through the 50 * ctrl_iface. 51 */ 52 int key_data; 53 }; 54 55 56 static int wpa_config_parse_str(const struct parse_data *data, 57 struct wpa_ssid *ssid, 58 int line, const char *value) 59 { 60 size_t res_len, *dst_len; 61 char **dst, *tmp; 62 63 if (os_strcmp(value, "NULL") == 0) { 64 wpa_printf(MSG_DEBUG, "Unset configuration string '%s'", 65 data->name); 66 tmp = NULL; 67 res_len = 0; 68 goto set; 69 } 70 71 tmp = wpa_config_parse_string(value, &res_len); 72 if (tmp == NULL) { 73 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.", 74 line, data->name, 75 data->key_data ? "[KEY DATA REMOVED]" : value); 76 return -1; 77 } 78 79 if (data->key_data) { 80 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name, 81 (u8 *) tmp, res_len); 82 } else { 83 wpa_hexdump_ascii(MSG_MSGDUMP, data->name, 84 (u8 *) tmp, res_len); 85 } 86 87 if (data->param3 && res_len < (size_t) data->param3) { 88 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu " 89 "min_len=%ld)", line, data->name, 90 (unsigned long) res_len, (long) data->param3); 91 os_free(tmp); 92 return -1; 93 } 94 95 if (data->param4 && res_len > (size_t) data->param4) { 96 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu " 97 "max_len=%ld)", line, data->name, 98 (unsigned long) res_len, (long) data->param4); 99 os_free(tmp); 100 return -1; 101 } 102 103 set: 104 dst = (char **) (((u8 *) ssid) + (long) data->param1); 105 dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2); 106 os_free(*dst); 107 *dst = tmp; 108 if (data->param2) 109 *dst_len = res_len; 110 111 return 0; 112 } 113 114 115 #ifndef NO_CONFIG_WRITE 116 static char * wpa_config_write_string_ascii(const u8 *value, size_t len) 117 { 118 char *buf; 119 120 buf = os_malloc(len + 3); 121 if (buf == NULL) 122 return NULL; 123 buf[0] = '"'; 124 os_memcpy(buf + 1, value, len); 125 buf[len + 1] = '"'; 126 buf[len + 2] = '\0'; 127 128 return buf; 129 } 130 131 132 static char * wpa_config_write_string_hex(const u8 *value, size_t len) 133 { 134 char *buf; 135 136 buf = os_zalloc(2 * len + 1); 137 if (buf == NULL) 138 return NULL; 139 wpa_snprintf_hex(buf, 2 * len + 1, value, len); 140 141 return buf; 142 } 143 144 145 static char * wpa_config_write_string(const u8 *value, size_t len) 146 { 147 if (value == NULL) 148 return NULL; 149 150 if (is_hex(value, len)) 151 return wpa_config_write_string_hex(value, len); 152 else 153 return wpa_config_write_string_ascii(value, len); 154 } 155 156 157 static char * wpa_config_write_str(const struct parse_data *data, 158 struct wpa_ssid *ssid) 159 { 160 size_t len; 161 char **src; 162 163 src = (char **) (((u8 *) ssid) + (long) data->param1); 164 if (*src == NULL) 165 return NULL; 166 167 if (data->param2) 168 len = *((size_t *) (((u8 *) ssid) + (long) data->param2)); 169 else 170 len = os_strlen(*src); 171 172 return wpa_config_write_string((const u8 *) *src, len); 173 } 174 #endif /* NO_CONFIG_WRITE */ 175 176 177 static int wpa_config_parse_int(const struct parse_data *data, 178 struct wpa_ssid *ssid, 179 int line, const char *value) 180 { 181 int val, *dst; 182 char *end; 183 184 dst = (int *) (((u8 *) ssid) + (long) data->param1); 185 val = strtol(value, &end, 0); 186 if (*end) { 187 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"", 188 line, value); 189 return -1; 190 } 191 *dst = val; 192 wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst); 193 194 if (data->param3 && *dst < (long) data->param3) { 195 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d " 196 "min_value=%ld)", line, data->name, *dst, 197 (long) data->param3); 198 *dst = (long) data->param3; 199 return -1; 200 } 201 202 if (data->param4 && *dst > (long) data->param4) { 203 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d " 204 "max_value=%ld)", line, data->name, *dst, 205 (long) data->param4); 206 *dst = (long) data->param4; 207 return -1; 208 } 209 210 return 0; 211 } 212 213 214 #ifndef NO_CONFIG_WRITE 215 static char * wpa_config_write_int(const struct parse_data *data, 216 struct wpa_ssid *ssid) 217 { 218 int *src, res; 219 char *value; 220 221 src = (int *) (((u8 *) ssid) + (long) data->param1); 222 223 value = os_malloc(20); 224 if (value == NULL) 225 return NULL; 226 res = os_snprintf(value, 20, "%d", *src); 227 if (res < 0 || res >= 20) { 228 os_free(value); 229 return NULL; 230 } 231 value[20 - 1] = '\0'; 232 return value; 233 } 234 #endif /* NO_CONFIG_WRITE */ 235 236 237 static int wpa_config_parse_bssid(const struct parse_data *data, 238 struct wpa_ssid *ssid, int line, 239 const char *value) 240 { 241 if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 || 242 os_strcmp(value, "any") == 0) { 243 ssid->bssid_set = 0; 244 wpa_printf(MSG_MSGDUMP, "BSSID any"); 245 return 0; 246 } 247 if (hwaddr_aton(value, ssid->bssid)) { 248 wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.", 249 line, value); 250 return -1; 251 } 252 ssid->bssid_set = 1; 253 wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN); 254 return 0; 255 } 256 257 258 #ifndef NO_CONFIG_WRITE 259 static char * wpa_config_write_bssid(const struct parse_data *data, 260 struct wpa_ssid *ssid) 261 { 262 char *value; 263 int res; 264 265 if (!ssid->bssid_set) 266 return NULL; 267 268 value = os_malloc(20); 269 if (value == NULL) 270 return NULL; 271 res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid)); 272 if (res < 0 || res >= 20) { 273 os_free(value); 274 return NULL; 275 } 276 value[20 - 1] = '\0'; 277 return value; 278 } 279 #endif /* NO_CONFIG_WRITE */ 280 281 282 static int wpa_config_parse_psk(const struct parse_data *data, 283 struct wpa_ssid *ssid, int line, 284 const char *value) 285 { 286 #ifdef CONFIG_EXT_PASSWORD 287 if (os_strncmp(value, "ext:", 4) == 0) { 288 os_free(ssid->passphrase); 289 ssid->passphrase = NULL; 290 ssid->psk_set = 0; 291 os_free(ssid->ext_psk); 292 ssid->ext_psk = os_strdup(value + 4); 293 if (ssid->ext_psk == NULL) 294 return -1; 295 wpa_printf(MSG_DEBUG, "PSK: External password '%s'", 296 ssid->ext_psk); 297 return 0; 298 } 299 #endif /* CONFIG_EXT_PASSWORD */ 300 301 if (*value == '"') { 302 #ifndef CONFIG_NO_PBKDF2 303 const char *pos; 304 size_t len; 305 306 value++; 307 pos = os_strrchr(value, '"'); 308 if (pos) 309 len = pos - value; 310 else 311 len = os_strlen(value); 312 if (len < 8 || len > 63) { 313 wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase " 314 "length %lu (expected: 8..63) '%s'.", 315 line, (unsigned long) len, value); 316 return -1; 317 } 318 wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)", 319 (u8 *) value, len); 320 if (ssid->passphrase && os_strlen(ssid->passphrase) == len && 321 os_memcmp(ssid->passphrase, value, len) == 0) 322 return 0; 323 ssid->psk_set = 0; 324 os_free(ssid->passphrase); 325 ssid->passphrase = os_malloc(len + 1); 326 if (ssid->passphrase == NULL) 327 return -1; 328 os_memcpy(ssid->passphrase, value, len); 329 ssid->passphrase[len] = '\0'; 330 return 0; 331 #else /* CONFIG_NO_PBKDF2 */ 332 wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not " 333 "supported.", line); 334 return -1; 335 #endif /* CONFIG_NO_PBKDF2 */ 336 } 337 338 if (hexstr2bin(value, ssid->psk, PMK_LEN) || 339 value[PMK_LEN * 2] != '\0') { 340 wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.", 341 line, value); 342 return -1; 343 } 344 345 os_free(ssid->passphrase); 346 ssid->passphrase = NULL; 347 348 ssid->psk_set = 1; 349 wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN); 350 return 0; 351 } 352 353 354 #ifndef NO_CONFIG_WRITE 355 static char * wpa_config_write_psk(const struct parse_data *data, 356 struct wpa_ssid *ssid) 357 { 358 #ifdef CONFIG_EXT_PASSWORD 359 if (ssid->ext_psk) { 360 size_t len = 4 + os_strlen(ssid->ext_psk) + 1; 361 char *buf = os_malloc(len); 362 if (buf == NULL) 363 return NULL; 364 os_snprintf(buf, len, "ext:%s", ssid->ext_psk); 365 return buf; 366 } 367 #endif /* CONFIG_EXT_PASSWORD */ 368 369 if (ssid->passphrase) 370 return wpa_config_write_string_ascii( 371 (const u8 *) ssid->passphrase, 372 os_strlen(ssid->passphrase)); 373 374 if (ssid->psk_set) 375 return wpa_config_write_string_hex(ssid->psk, PMK_LEN); 376 377 return NULL; 378 } 379 #endif /* NO_CONFIG_WRITE */ 380 381 382 static int wpa_config_parse_proto(const struct parse_data *data, 383 struct wpa_ssid *ssid, int line, 384 const char *value) 385 { 386 int val = 0, last, errors = 0; 387 char *start, *end, *buf; 388 389 buf = os_strdup(value); 390 if (buf == NULL) 391 return -1; 392 start = buf; 393 394 while (*start != '\0') { 395 while (*start == ' ' || *start == '\t') 396 start++; 397 if (*start == '\0') 398 break; 399 end = start; 400 while (*end != ' ' && *end != '\t' && *end != '\0') 401 end++; 402 last = *end == '\0'; 403 *end = '\0'; 404 if (os_strcmp(start, "WPA") == 0) 405 val |= WPA_PROTO_WPA; 406 else if (os_strcmp(start, "RSN") == 0 || 407 os_strcmp(start, "WPA2") == 0) 408 val |= WPA_PROTO_RSN; 409 else { 410 wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'", 411 line, start); 412 errors++; 413 } 414 415 if (last) 416 break; 417 start = end + 1; 418 } 419 os_free(buf); 420 421 if (val == 0) { 422 wpa_printf(MSG_ERROR, 423 "Line %d: no proto values configured.", line); 424 errors++; 425 } 426 427 wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val); 428 ssid->proto = val; 429 return errors ? -1 : 0; 430 } 431 432 433 #ifndef NO_CONFIG_WRITE 434 static char * wpa_config_write_proto(const struct parse_data *data, 435 struct wpa_ssid *ssid) 436 { 437 int first = 1, ret; 438 char *buf, *pos, *end; 439 440 pos = buf = os_zalloc(10); 441 if (buf == NULL) 442 return NULL; 443 end = buf + 10; 444 445 if (ssid->proto & WPA_PROTO_WPA) { 446 ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " "); 447 if (ret < 0 || ret >= end - pos) 448 return buf; 449 pos += ret; 450 first = 0; 451 } 452 453 if (ssid->proto & WPA_PROTO_RSN) { 454 ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " "); 455 if (ret < 0 || ret >= end - pos) 456 return buf; 457 pos += ret; 458 first = 0; 459 } 460 461 return buf; 462 } 463 #endif /* NO_CONFIG_WRITE */ 464 465 466 static int wpa_config_parse_key_mgmt(const struct parse_data *data, 467 struct wpa_ssid *ssid, int line, 468 const char *value) 469 { 470 int val = 0, last, errors = 0; 471 char *start, *end, *buf; 472 473 buf = os_strdup(value); 474 if (buf == NULL) 475 return -1; 476 start = buf; 477 478 while (*start != '\0') { 479 while (*start == ' ' || *start == '\t') 480 start++; 481 if (*start == '\0') 482 break; 483 end = start; 484 while (*end != ' ' && *end != '\t' && *end != '\0') 485 end++; 486 last = *end == '\0'; 487 *end = '\0'; 488 if (os_strcmp(start, "WPA-PSK") == 0) 489 val |= WPA_KEY_MGMT_PSK; 490 else if (os_strcmp(start, "WPA-EAP") == 0) 491 val |= WPA_KEY_MGMT_IEEE8021X; 492 else if (os_strcmp(start, "IEEE8021X") == 0) 493 val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA; 494 else if (os_strcmp(start, "NONE") == 0) 495 val |= WPA_KEY_MGMT_NONE; 496 else if (os_strcmp(start, "WPA-NONE") == 0) 497 val |= WPA_KEY_MGMT_WPA_NONE; 498 #ifdef CONFIG_IEEE80211R 499 else if (os_strcmp(start, "FT-PSK") == 0) 500 val |= WPA_KEY_MGMT_FT_PSK; 501 else if (os_strcmp(start, "FT-EAP") == 0) 502 val |= WPA_KEY_MGMT_FT_IEEE8021X; 503 #endif /* CONFIG_IEEE80211R */ 504 #ifdef CONFIG_IEEE80211W 505 else if (os_strcmp(start, "WPA-PSK-SHA256") == 0) 506 val |= WPA_KEY_MGMT_PSK_SHA256; 507 else if (os_strcmp(start, "WPA-EAP-SHA256") == 0) 508 val |= WPA_KEY_MGMT_IEEE8021X_SHA256; 509 #endif /* CONFIG_IEEE80211W */ 510 #ifdef CONFIG_WPS 511 else if (os_strcmp(start, "WPS") == 0) 512 val |= WPA_KEY_MGMT_WPS; 513 #endif /* CONFIG_WPS */ 514 #ifdef CONFIG_SAE 515 else if (os_strcmp(start, "SAE") == 0) 516 val |= WPA_KEY_MGMT_SAE; 517 else if (os_strcmp(start, "FT-SAE") == 0) 518 val |= WPA_KEY_MGMT_FT_SAE; 519 #endif /* CONFIG_SAE */ 520 else { 521 wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'", 522 line, start); 523 errors++; 524 } 525 526 if (last) 527 break; 528 start = end + 1; 529 } 530 os_free(buf); 531 532 if (val == 0) { 533 wpa_printf(MSG_ERROR, 534 "Line %d: no key_mgmt values configured.", line); 535 errors++; 536 } 537 538 wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val); 539 ssid->key_mgmt = val; 540 return errors ? -1 : 0; 541 } 542 543 544 #ifndef NO_CONFIG_WRITE 545 static char * wpa_config_write_key_mgmt(const struct parse_data *data, 546 struct wpa_ssid *ssid) 547 { 548 char *buf, *pos, *end; 549 int ret; 550 551 pos = buf = os_zalloc(50); 552 if (buf == NULL) 553 return NULL; 554 end = buf + 50; 555 556 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) { 557 ret = os_snprintf(pos, end - pos, "%sWPA-PSK", 558 pos == buf ? "" : " "); 559 if (ret < 0 || ret >= end - pos) { 560 end[-1] = '\0'; 561 return buf; 562 } 563 pos += ret; 564 } 565 566 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) { 567 ret = os_snprintf(pos, end - pos, "%sWPA-EAP", 568 pos == buf ? "" : " "); 569 if (ret < 0 || ret >= end - pos) { 570 end[-1] = '\0'; 571 return buf; 572 } 573 pos += ret; 574 } 575 576 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 577 ret = os_snprintf(pos, end - pos, "%sIEEE8021X", 578 pos == buf ? "" : " "); 579 if (ret < 0 || ret >= end - pos) { 580 end[-1] = '\0'; 581 return buf; 582 } 583 pos += ret; 584 } 585 586 if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) { 587 ret = os_snprintf(pos, end - pos, "%sNONE", 588 pos == buf ? "" : " "); 589 if (ret < 0 || ret >= end - pos) { 590 end[-1] = '\0'; 591 return buf; 592 } 593 pos += ret; 594 } 595 596 if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) { 597 ret = os_snprintf(pos, end - pos, "%sWPA-NONE", 598 pos == buf ? "" : " "); 599 if (ret < 0 || ret >= end - pos) { 600 end[-1] = '\0'; 601 return buf; 602 } 603 pos += ret; 604 } 605 606 #ifdef CONFIG_IEEE80211R 607 if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) 608 pos += os_snprintf(pos, end - pos, "%sFT-PSK", 609 pos == buf ? "" : " "); 610 611 if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) 612 pos += os_snprintf(pos, end - pos, "%sFT-EAP", 613 pos == buf ? "" : " "); 614 #endif /* CONFIG_IEEE80211R */ 615 616 #ifdef CONFIG_IEEE80211W 617 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) 618 pos += os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256", 619 pos == buf ? "" : " "); 620 621 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) 622 pos += os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256", 623 pos == buf ? "" : " "); 624 #endif /* CONFIG_IEEE80211W */ 625 626 #ifdef CONFIG_WPS 627 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 628 pos += os_snprintf(pos, end - pos, "%sWPS", 629 pos == buf ? "" : " "); 630 #endif /* CONFIG_WPS */ 631 632 return buf; 633 } 634 #endif /* NO_CONFIG_WRITE */ 635 636 637 static int wpa_config_parse_cipher(int line, const char *value) 638 { 639 int val = wpa_parse_cipher(value); 640 if (val < 0) { 641 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.", 642 line, value); 643 return -1; 644 } 645 if (val == 0) { 646 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.", 647 line); 648 return -1; 649 } 650 return val; 651 } 652 653 654 #ifndef NO_CONFIG_WRITE 655 static char * wpa_config_write_cipher(int cipher) 656 { 657 char *buf = os_zalloc(50); 658 if (buf == NULL) 659 return NULL; 660 661 if (wpa_write_ciphers(buf, buf + 50, cipher, " ") < 0) { 662 os_free(buf); 663 return NULL; 664 } 665 666 return buf; 667 } 668 #endif /* NO_CONFIG_WRITE */ 669 670 671 static int wpa_config_parse_pairwise(const struct parse_data *data, 672 struct wpa_ssid *ssid, int line, 673 const char *value) 674 { 675 int val; 676 val = wpa_config_parse_cipher(line, value); 677 if (val == -1) 678 return -1; 679 if (val & ~WPA_ALLOWED_PAIRWISE_CIPHERS) { 680 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher " 681 "(0x%x).", line, val); 682 return -1; 683 } 684 685 wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val); 686 ssid->pairwise_cipher = val; 687 return 0; 688 } 689 690 691 #ifndef NO_CONFIG_WRITE 692 static char * wpa_config_write_pairwise(const struct parse_data *data, 693 struct wpa_ssid *ssid) 694 { 695 return wpa_config_write_cipher(ssid->pairwise_cipher); 696 } 697 #endif /* NO_CONFIG_WRITE */ 698 699 700 static int wpa_config_parse_group(const struct parse_data *data, 701 struct wpa_ssid *ssid, int line, 702 const char *value) 703 { 704 int val; 705 val = wpa_config_parse_cipher(line, value); 706 if (val == -1) 707 return -1; 708 if (val & ~WPA_ALLOWED_GROUP_CIPHERS) { 709 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher " 710 "(0x%x).", line, val); 711 return -1; 712 } 713 714 wpa_printf(MSG_MSGDUMP, "group: 0x%x", val); 715 ssid->group_cipher = val; 716 return 0; 717 } 718 719 720 #ifndef NO_CONFIG_WRITE 721 static char * wpa_config_write_group(const struct parse_data *data, 722 struct wpa_ssid *ssid) 723 { 724 return wpa_config_write_cipher(ssid->group_cipher); 725 } 726 #endif /* NO_CONFIG_WRITE */ 727 728 729 static int wpa_config_parse_auth_alg(const struct parse_data *data, 730 struct wpa_ssid *ssid, int line, 731 const char *value) 732 { 733 int val = 0, last, errors = 0; 734 char *start, *end, *buf; 735 736 buf = os_strdup(value); 737 if (buf == NULL) 738 return -1; 739 start = buf; 740 741 while (*start != '\0') { 742 while (*start == ' ' || *start == '\t') 743 start++; 744 if (*start == '\0') 745 break; 746 end = start; 747 while (*end != ' ' && *end != '\t' && *end != '\0') 748 end++; 749 last = *end == '\0'; 750 *end = '\0'; 751 if (os_strcmp(start, "OPEN") == 0) 752 val |= WPA_AUTH_ALG_OPEN; 753 else if (os_strcmp(start, "SHARED") == 0) 754 val |= WPA_AUTH_ALG_SHARED; 755 else if (os_strcmp(start, "LEAP") == 0) 756 val |= WPA_AUTH_ALG_LEAP; 757 else { 758 wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'", 759 line, start); 760 errors++; 761 } 762 763 if (last) 764 break; 765 start = end + 1; 766 } 767 os_free(buf); 768 769 if (val == 0) { 770 wpa_printf(MSG_ERROR, 771 "Line %d: no auth_alg values configured.", line); 772 errors++; 773 } 774 775 wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val); 776 ssid->auth_alg = val; 777 return errors ? -1 : 0; 778 } 779 780 781 #ifndef NO_CONFIG_WRITE 782 static char * wpa_config_write_auth_alg(const struct parse_data *data, 783 struct wpa_ssid *ssid) 784 { 785 char *buf, *pos, *end; 786 int ret; 787 788 pos = buf = os_zalloc(30); 789 if (buf == NULL) 790 return NULL; 791 end = buf + 30; 792 793 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) { 794 ret = os_snprintf(pos, end - pos, "%sOPEN", 795 pos == buf ? "" : " "); 796 if (ret < 0 || ret >= end - pos) { 797 end[-1] = '\0'; 798 return buf; 799 } 800 pos += ret; 801 } 802 803 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) { 804 ret = os_snprintf(pos, end - pos, "%sSHARED", 805 pos == buf ? "" : " "); 806 if (ret < 0 || ret >= end - pos) { 807 end[-1] = '\0'; 808 return buf; 809 } 810 pos += ret; 811 } 812 813 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) { 814 ret = os_snprintf(pos, end - pos, "%sLEAP", 815 pos == buf ? "" : " "); 816 if (ret < 0 || ret >= end - pos) { 817 end[-1] = '\0'; 818 return buf; 819 } 820 pos += ret; 821 } 822 823 return buf; 824 } 825 #endif /* NO_CONFIG_WRITE */ 826 827 828 static int * wpa_config_parse_int_array(const char *value) 829 { 830 int *freqs; 831 size_t used, len; 832 const char *pos; 833 834 used = 0; 835 len = 10; 836 freqs = os_calloc(len + 1, sizeof(int)); 837 if (freqs == NULL) 838 return NULL; 839 840 pos = value; 841 while (pos) { 842 while (*pos == ' ') 843 pos++; 844 if (used == len) { 845 int *n; 846 size_t i; 847 n = os_realloc_array(freqs, len * 2 + 1, sizeof(int)); 848 if (n == NULL) { 849 os_free(freqs); 850 return NULL; 851 } 852 for (i = len; i <= len * 2; i++) 853 n[i] = 0; 854 freqs = n; 855 len *= 2; 856 } 857 858 freqs[used] = atoi(pos); 859 if (freqs[used] == 0) 860 break; 861 used++; 862 pos = os_strchr(pos + 1, ' '); 863 } 864 865 return freqs; 866 } 867 868 869 static int wpa_config_parse_scan_freq(const struct parse_data *data, 870 struct wpa_ssid *ssid, int line, 871 const char *value) 872 { 873 int *freqs; 874 875 freqs = wpa_config_parse_int_array(value); 876 if (freqs == NULL) 877 return -1; 878 os_free(ssid->scan_freq); 879 ssid->scan_freq = freqs; 880 881 return 0; 882 } 883 884 885 static int wpa_config_parse_freq_list(const struct parse_data *data, 886 struct wpa_ssid *ssid, int line, 887 const char *value) 888 { 889 int *freqs; 890 891 freqs = wpa_config_parse_int_array(value); 892 if (freqs == NULL) 893 return -1; 894 os_free(ssid->freq_list); 895 ssid->freq_list = freqs; 896 897 return 0; 898 } 899 900 901 #ifndef NO_CONFIG_WRITE 902 static char * wpa_config_write_freqs(const struct parse_data *data, 903 const int *freqs) 904 { 905 char *buf, *pos, *end; 906 int i, ret; 907 size_t count; 908 909 if (freqs == NULL) 910 return NULL; 911 912 count = 0; 913 for (i = 0; freqs[i]; i++) 914 count++; 915 916 pos = buf = os_zalloc(10 * count + 1); 917 if (buf == NULL) 918 return NULL; 919 end = buf + 10 * count + 1; 920 921 for (i = 0; freqs[i]; i++) { 922 ret = os_snprintf(pos, end - pos, "%s%u", 923 i == 0 ? "" : " ", freqs[i]); 924 if (ret < 0 || ret >= end - pos) { 925 end[-1] = '\0'; 926 return buf; 927 } 928 pos += ret; 929 } 930 931 return buf; 932 } 933 934 935 static char * wpa_config_write_scan_freq(const struct parse_data *data, 936 struct wpa_ssid *ssid) 937 { 938 return wpa_config_write_freqs(data, ssid->scan_freq); 939 } 940 941 942 static char * wpa_config_write_freq_list(const struct parse_data *data, 943 struct wpa_ssid *ssid) 944 { 945 return wpa_config_write_freqs(data, ssid->freq_list); 946 } 947 #endif /* NO_CONFIG_WRITE */ 948 949 950 #ifdef IEEE8021X_EAPOL 951 static int wpa_config_parse_eap(const struct parse_data *data, 952 struct wpa_ssid *ssid, int line, 953 const char *value) 954 { 955 int last, errors = 0; 956 char *start, *end, *buf; 957 struct eap_method_type *methods = NULL, *tmp; 958 size_t num_methods = 0; 959 960 buf = os_strdup(value); 961 if (buf == NULL) 962 return -1; 963 start = buf; 964 965 while (*start != '\0') { 966 while (*start == ' ' || *start == '\t') 967 start++; 968 if (*start == '\0') 969 break; 970 end = start; 971 while (*end != ' ' && *end != '\t' && *end != '\0') 972 end++; 973 last = *end == '\0'; 974 *end = '\0'; 975 tmp = methods; 976 methods = os_realloc_array(methods, num_methods + 1, 977 sizeof(*methods)); 978 if (methods == NULL) { 979 os_free(tmp); 980 os_free(buf); 981 return -1; 982 } 983 methods[num_methods].method = eap_peer_get_type( 984 start, &methods[num_methods].vendor); 985 if (methods[num_methods].vendor == EAP_VENDOR_IETF && 986 methods[num_methods].method == EAP_TYPE_NONE) { 987 wpa_printf(MSG_ERROR, "Line %d: unknown EAP method " 988 "'%s'", line, start); 989 wpa_printf(MSG_ERROR, "You may need to add support for" 990 " this EAP method during wpa_supplicant\n" 991 "build time configuration.\n" 992 "See README for more information."); 993 errors++; 994 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF && 995 methods[num_methods].method == EAP_TYPE_LEAP) 996 ssid->leap++; 997 else 998 ssid->non_leap++; 999 num_methods++; 1000 if (last) 1001 break; 1002 start = end + 1; 1003 } 1004 os_free(buf); 1005 1006 tmp = methods; 1007 methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods)); 1008 if (methods == NULL) { 1009 os_free(tmp); 1010 return -1; 1011 } 1012 methods[num_methods].vendor = EAP_VENDOR_IETF; 1013 methods[num_methods].method = EAP_TYPE_NONE; 1014 num_methods++; 1015 1016 wpa_hexdump(MSG_MSGDUMP, "eap methods", 1017 (u8 *) methods, num_methods * sizeof(*methods)); 1018 os_free(ssid->eap.eap_methods); 1019 ssid->eap.eap_methods = methods; 1020 return errors ? -1 : 0; 1021 } 1022 1023 1024 static char * wpa_config_write_eap(const struct parse_data *data, 1025 struct wpa_ssid *ssid) 1026 { 1027 int i, ret; 1028 char *buf, *pos, *end; 1029 const struct eap_method_type *eap_methods = ssid->eap.eap_methods; 1030 const char *name; 1031 1032 if (eap_methods == NULL) 1033 return NULL; 1034 1035 pos = buf = os_zalloc(100); 1036 if (buf == NULL) 1037 return NULL; 1038 end = buf + 100; 1039 1040 for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF || 1041 eap_methods[i].method != EAP_TYPE_NONE; i++) { 1042 name = eap_get_name(eap_methods[i].vendor, 1043 eap_methods[i].method); 1044 if (name) { 1045 ret = os_snprintf(pos, end - pos, "%s%s", 1046 pos == buf ? "" : " ", name); 1047 if (ret < 0 || ret >= end - pos) 1048 break; 1049 pos += ret; 1050 } 1051 } 1052 1053 end[-1] = '\0'; 1054 1055 return buf; 1056 } 1057 1058 1059 static int wpa_config_parse_password(const struct parse_data *data, 1060 struct wpa_ssid *ssid, int line, 1061 const char *value) 1062 { 1063 u8 *hash; 1064 1065 if (os_strcmp(value, "NULL") == 0) { 1066 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'"); 1067 os_free(ssid->eap.password); 1068 ssid->eap.password = NULL; 1069 ssid->eap.password_len = 0; 1070 return 0; 1071 } 1072 1073 #ifdef CONFIG_EXT_PASSWORD 1074 if (os_strncmp(value, "ext:", 4) == 0) { 1075 char *name = os_strdup(value + 4); 1076 if (name == NULL) 1077 return -1; 1078 os_free(ssid->eap.password); 1079 ssid->eap.password = (u8 *) name; 1080 ssid->eap.password_len = os_strlen(name); 1081 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH; 1082 ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD; 1083 return 0; 1084 } 1085 #endif /* CONFIG_EXT_PASSWORD */ 1086 1087 if (os_strncmp(value, "hash:", 5) != 0) { 1088 char *tmp; 1089 size_t res_len; 1090 1091 tmp = wpa_config_parse_string(value, &res_len); 1092 if (tmp == NULL) { 1093 wpa_printf(MSG_ERROR, "Line %d: failed to parse " 1094 "password.", line); 1095 return -1; 1096 } 1097 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name, 1098 (u8 *) tmp, res_len); 1099 1100 os_free(ssid->eap.password); 1101 ssid->eap.password = (u8 *) tmp; 1102 ssid->eap.password_len = res_len; 1103 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH; 1104 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD; 1105 1106 return 0; 1107 } 1108 1109 1110 /* NtPasswordHash: hash:<32 hex digits> */ 1111 if (os_strlen(value + 5) != 2 * 16) { 1112 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length " 1113 "(expected 32 hex digits)", line); 1114 return -1; 1115 } 1116 1117 hash = os_malloc(16); 1118 if (hash == NULL) 1119 return -1; 1120 1121 if (hexstr2bin(value + 5, hash, 16)) { 1122 os_free(hash); 1123 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line); 1124 return -1; 1125 } 1126 1127 wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16); 1128 1129 os_free(ssid->eap.password); 1130 ssid->eap.password = hash; 1131 ssid->eap.password_len = 16; 1132 ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH; 1133 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD; 1134 1135 return 0; 1136 } 1137 1138 1139 static char * wpa_config_write_password(const struct parse_data *data, 1140 struct wpa_ssid *ssid) 1141 { 1142 char *buf; 1143 1144 if (ssid->eap.password == NULL) 1145 return NULL; 1146 1147 #ifdef CONFIG_EXT_PASSWORD 1148 if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) { 1149 buf = os_zalloc(4 + ssid->eap.password_len + 1); 1150 if (buf == NULL) 1151 return NULL; 1152 os_memcpy(buf, "ext:", 4); 1153 os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len); 1154 return buf; 1155 } 1156 #endif /* CONFIG_EXT_PASSWORD */ 1157 1158 if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) { 1159 return wpa_config_write_string( 1160 ssid->eap.password, ssid->eap.password_len); 1161 } 1162 1163 buf = os_malloc(5 + 32 + 1); 1164 if (buf == NULL) 1165 return NULL; 1166 1167 os_memcpy(buf, "hash:", 5); 1168 wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16); 1169 1170 return buf; 1171 } 1172 #endif /* IEEE8021X_EAPOL */ 1173 1174 1175 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line, 1176 const char *value, int idx) 1177 { 1178 char *buf, title[20]; 1179 int res; 1180 1181 buf = wpa_config_parse_string(value, len); 1182 if (buf == NULL) { 1183 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.", 1184 line, idx, value); 1185 return -1; 1186 } 1187 if (*len > MAX_WEP_KEY_LEN) { 1188 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.", 1189 line, idx, value); 1190 os_free(buf); 1191 return -1; 1192 } 1193 if (*len && *len != 5 && *len != 13 && *len != 16) { 1194 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - " 1195 "this network block will be ignored", 1196 line, (unsigned int) *len); 1197 } 1198 os_memcpy(key, buf, *len); 1199 os_free(buf); 1200 res = os_snprintf(title, sizeof(title), "wep_key%d", idx); 1201 if (res >= 0 && (size_t) res < sizeof(title)) 1202 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len); 1203 return 0; 1204 } 1205 1206 1207 static int wpa_config_parse_wep_key0(const struct parse_data *data, 1208 struct wpa_ssid *ssid, int line, 1209 const char *value) 1210 { 1211 return wpa_config_parse_wep_key(ssid->wep_key[0], 1212 &ssid->wep_key_len[0], line, 1213 value, 0); 1214 } 1215 1216 1217 static int wpa_config_parse_wep_key1(const struct parse_data *data, 1218 struct wpa_ssid *ssid, int line, 1219 const char *value) 1220 { 1221 return wpa_config_parse_wep_key(ssid->wep_key[1], 1222 &ssid->wep_key_len[1], line, 1223 value, 1); 1224 } 1225 1226 1227 static int wpa_config_parse_wep_key2(const struct parse_data *data, 1228 struct wpa_ssid *ssid, int line, 1229 const char *value) 1230 { 1231 return wpa_config_parse_wep_key(ssid->wep_key[2], 1232 &ssid->wep_key_len[2], line, 1233 value, 2); 1234 } 1235 1236 1237 static int wpa_config_parse_wep_key3(const struct parse_data *data, 1238 struct wpa_ssid *ssid, int line, 1239 const char *value) 1240 { 1241 return wpa_config_parse_wep_key(ssid->wep_key[3], 1242 &ssid->wep_key_len[3], line, 1243 value, 3); 1244 } 1245 1246 1247 #ifndef NO_CONFIG_WRITE 1248 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx) 1249 { 1250 if (ssid->wep_key_len[idx] == 0) 1251 return NULL; 1252 return wpa_config_write_string(ssid->wep_key[idx], 1253 ssid->wep_key_len[idx]); 1254 } 1255 1256 1257 static char * wpa_config_write_wep_key0(const struct parse_data *data, 1258 struct wpa_ssid *ssid) 1259 { 1260 return wpa_config_write_wep_key(ssid, 0); 1261 } 1262 1263 1264 static char * wpa_config_write_wep_key1(const struct parse_data *data, 1265 struct wpa_ssid *ssid) 1266 { 1267 return wpa_config_write_wep_key(ssid, 1); 1268 } 1269 1270 1271 static char * wpa_config_write_wep_key2(const struct parse_data *data, 1272 struct wpa_ssid *ssid) 1273 { 1274 return wpa_config_write_wep_key(ssid, 2); 1275 } 1276 1277 1278 static char * wpa_config_write_wep_key3(const struct parse_data *data, 1279 struct wpa_ssid *ssid) 1280 { 1281 return wpa_config_write_wep_key(ssid, 3); 1282 } 1283 #endif /* NO_CONFIG_WRITE */ 1284 1285 1286 #ifdef CONFIG_P2P 1287 1288 static int wpa_config_parse_p2p_client_list(const struct parse_data *data, 1289 struct wpa_ssid *ssid, int line, 1290 const char *value) 1291 { 1292 const char *pos; 1293 u8 *buf, *n, addr[ETH_ALEN]; 1294 size_t count; 1295 1296 buf = NULL; 1297 count = 0; 1298 1299 pos = value; 1300 while (pos && *pos) { 1301 while (*pos == ' ') 1302 pos++; 1303 1304 if (hwaddr_aton(pos, addr)) { 1305 if (count == 0) { 1306 wpa_printf(MSG_ERROR, "Line %d: Invalid " 1307 "p2p_client_list address '%s'.", 1308 line, value); 1309 os_free(buf); 1310 return -1; 1311 } 1312 /* continue anyway since this could have been from a 1313 * truncated configuration file line */ 1314 wpa_printf(MSG_INFO, "Line %d: Ignore likely " 1315 "truncated p2p_client_list address '%s'", 1316 line, pos); 1317 } else { 1318 n = os_realloc_array(buf, count + 1, ETH_ALEN); 1319 if (n == NULL) { 1320 os_free(buf); 1321 return -1; 1322 } 1323 buf = n; 1324 os_memmove(buf + ETH_ALEN, buf, count * ETH_ALEN); 1325 os_memcpy(buf, addr, ETH_ALEN); 1326 count++; 1327 wpa_hexdump(MSG_MSGDUMP, "p2p_client_list", 1328 addr, ETH_ALEN); 1329 } 1330 1331 pos = os_strchr(pos, ' '); 1332 } 1333 1334 os_free(ssid->p2p_client_list); 1335 ssid->p2p_client_list = buf; 1336 ssid->num_p2p_clients = count; 1337 1338 return 0; 1339 } 1340 1341 1342 #ifndef NO_CONFIG_WRITE 1343 static char * wpa_config_write_p2p_client_list(const struct parse_data *data, 1344 struct wpa_ssid *ssid) 1345 { 1346 char *value, *end, *pos; 1347 int res; 1348 size_t i; 1349 1350 if (ssid->p2p_client_list == NULL || ssid->num_p2p_clients == 0) 1351 return NULL; 1352 1353 value = os_malloc(20 * ssid->num_p2p_clients); 1354 if (value == NULL) 1355 return NULL; 1356 pos = value; 1357 end = value + 20 * ssid->num_p2p_clients; 1358 1359 for (i = ssid->num_p2p_clients; i > 0; i--) { 1360 res = os_snprintf(pos, end - pos, MACSTR " ", 1361 MAC2STR(ssid->p2p_client_list + 1362 (i - 1) * ETH_ALEN)); 1363 if (res < 0 || res >= end - pos) { 1364 os_free(value); 1365 return NULL; 1366 } 1367 pos += res; 1368 } 1369 1370 if (pos > value) 1371 pos[-1] = '\0'; 1372 1373 return value; 1374 } 1375 #endif /* NO_CONFIG_WRITE */ 1376 1377 #endif /* CONFIG_P2P */ 1378 1379 /* Helper macros for network block parser */ 1380 1381 #ifdef OFFSET 1382 #undef OFFSET 1383 #endif /* OFFSET */ 1384 /* OFFSET: Get offset of a variable within the wpa_ssid structure */ 1385 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v) 1386 1387 /* STR: Define a string variable for an ASCII string; f = field name */ 1388 #ifdef NO_CONFIG_WRITE 1389 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f) 1390 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f) 1391 #else /* NO_CONFIG_WRITE */ 1392 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f) 1393 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f) 1394 #endif /* NO_CONFIG_WRITE */ 1395 #define STR(f) _STR(f), NULL, NULL, NULL, 0 1396 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0 1397 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1 1398 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1 1399 1400 /* STR_LEN: Define a string variable with a separate variable for storing the 1401 * data length. Unlike STR(), this can be used to store arbitrary binary data 1402 * (i.e., even nul termination character). */ 1403 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len) 1404 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len) 1405 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0 1406 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0 1407 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1 1408 1409 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length 1410 * explicitly specified. */ 1411 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max) 1412 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0 1413 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1 1414 1415 #ifdef NO_CONFIG_WRITE 1416 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0 1417 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0 1418 #else /* NO_CONFIG_WRITE */ 1419 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \ 1420 OFFSET(f), (void *) 0 1421 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \ 1422 OFFSET(eap.f), (void *) 0 1423 #endif /* NO_CONFIG_WRITE */ 1424 1425 /* INT: Define an integer variable */ 1426 #define INT(f) _INT(f), NULL, NULL, 0 1427 #define INTe(f) _INTe(f), NULL, NULL, 0 1428 1429 /* INT_RANGE: Define an integer variable with allowed value range */ 1430 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0 1431 1432 /* FUNC: Define a configuration variable that uses a custom function for 1433 * parsing and writing the value. */ 1434 #ifdef NO_CONFIG_WRITE 1435 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL 1436 #else /* NO_CONFIG_WRITE */ 1437 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \ 1438 NULL, NULL, NULL, NULL 1439 #endif /* NO_CONFIG_WRITE */ 1440 #define FUNC(f) _FUNC(f), 0 1441 #define FUNC_KEY(f) _FUNC(f), 1 1442 1443 /* 1444 * Table of network configuration variables. This table is used to parse each 1445 * network configuration variable, e.g., each line in wpa_supplicant.conf file 1446 * that is inside a network block. 1447 * 1448 * This table is generated using the helper macros defined above and with 1449 * generous help from the C pre-processor. The field name is stored as a string 1450 * into .name and for STR and INT types, the offset of the target buffer within 1451 * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar 1452 * offset to the field containing the length of the configuration variable. 1453 * .param3 and .param4 can be used to mark the allowed range (length for STR 1454 * and value for INT). 1455 * 1456 * For each configuration line in wpa_supplicant.conf, the parser goes through 1457 * this table and select the entry that matches with the field name. The parser 1458 * function (.parser) is then called to parse the actual value of the field. 1459 * 1460 * This kind of mechanism makes it easy to add new configuration parameters, 1461 * since only one line needs to be added into this table and into the 1462 * struct wpa_ssid definition if the new variable is either a string or 1463 * integer. More complex types will need to use their own parser and writer 1464 * functions. 1465 */ 1466 static const struct parse_data ssid_fields[] = { 1467 { STR_RANGE(ssid, 0, MAX_SSID_LEN) }, 1468 { INT_RANGE(scan_ssid, 0, 1) }, 1469 { FUNC(bssid) }, 1470 { FUNC_KEY(psk) }, 1471 { FUNC(proto) }, 1472 { FUNC(key_mgmt) }, 1473 { INT(bg_scan_period) }, 1474 { FUNC(pairwise) }, 1475 { FUNC(group) }, 1476 { FUNC(auth_alg) }, 1477 { FUNC(scan_freq) }, 1478 { FUNC(freq_list) }, 1479 #ifdef IEEE8021X_EAPOL 1480 { FUNC(eap) }, 1481 { STR_LENe(identity) }, 1482 { STR_LENe(anonymous_identity) }, 1483 { FUNC_KEY(password) }, 1484 { STRe(ca_cert) }, 1485 { STRe(ca_path) }, 1486 { STRe(client_cert) }, 1487 { STRe(private_key) }, 1488 { STR_KEYe(private_key_passwd) }, 1489 { STRe(dh_file) }, 1490 { STRe(subject_match) }, 1491 { STRe(altsubject_match) }, 1492 { STRe(ca_cert2) }, 1493 { STRe(ca_path2) }, 1494 { STRe(client_cert2) }, 1495 { STRe(private_key2) }, 1496 { STR_KEYe(private_key2_passwd) }, 1497 { STRe(dh_file2) }, 1498 { STRe(subject_match2) }, 1499 { STRe(altsubject_match2) }, 1500 { STRe(phase1) }, 1501 { STRe(phase2) }, 1502 { STRe(pcsc) }, 1503 { STR_KEYe(pin) }, 1504 { STRe(engine_id) }, 1505 { STRe(key_id) }, 1506 { STRe(cert_id) }, 1507 { STRe(ca_cert_id) }, 1508 { STR_KEYe(pin2) }, 1509 { STRe(engine2_id) }, 1510 { STRe(key2_id) }, 1511 { STRe(cert2_id) }, 1512 { STRe(ca_cert2_id) }, 1513 { INTe(engine) }, 1514 { INTe(engine2) }, 1515 { INT(eapol_flags) }, 1516 #endif /* IEEE8021X_EAPOL */ 1517 { FUNC_KEY(wep_key0) }, 1518 { FUNC_KEY(wep_key1) }, 1519 { FUNC_KEY(wep_key2) }, 1520 { FUNC_KEY(wep_key3) }, 1521 { INT(wep_tx_keyidx) }, 1522 { INT(priority) }, 1523 #ifdef IEEE8021X_EAPOL 1524 { INT(eap_workaround) }, 1525 { STRe(pac_file) }, 1526 { INTe(fragment_size) }, 1527 #endif /* IEEE8021X_EAPOL */ 1528 { INT_RANGE(mode, 0, 4) }, 1529 { INT_RANGE(proactive_key_caching, 0, 1) }, 1530 { INT_RANGE(disabled, 0, 2) }, 1531 { STR(id_str) }, 1532 #ifdef CONFIG_IEEE80211W 1533 { INT_RANGE(ieee80211w, 0, 2) }, 1534 #endif /* CONFIG_IEEE80211W */ 1535 { INT_RANGE(peerkey, 0, 1) }, 1536 { INT_RANGE(mixed_cell, 0, 1) }, 1537 { INT_RANGE(frequency, 0, 65000) }, 1538 { INT(wpa_ptk_rekey) }, 1539 { STR(bgscan) }, 1540 { INT_RANGE(ignore_broadcast_ssid, 0, 2) }, 1541 #ifdef CONFIG_P2P 1542 { FUNC(p2p_client_list) }, 1543 #endif /* CONFIG_P2P */ 1544 #ifdef CONFIG_HT_OVERRIDES 1545 { INT_RANGE(disable_ht, 0, 1) }, 1546 { INT_RANGE(disable_ht40, -1, 1) }, 1547 { INT_RANGE(disable_sgi, 0, 1) }, 1548 { INT_RANGE(disable_max_amsdu, -1, 1) }, 1549 { INT_RANGE(ampdu_factor, -1, 3) }, 1550 { INT_RANGE(ampdu_density, -1, 7) }, 1551 { STR(ht_mcs) }, 1552 #endif /* CONFIG_HT_OVERRIDES */ 1553 #ifdef CONFIG_VHT_OVERRIDES 1554 { INT_RANGE(disable_vht, 0, 1) }, 1555 { INT(vht_capa) }, 1556 { INT(vht_capa_mask) }, 1557 { INT_RANGE(vht_rx_mcs_nss_1, -1, 3) }, 1558 { INT_RANGE(vht_rx_mcs_nss_2, -1, 3) }, 1559 { INT_RANGE(vht_rx_mcs_nss_3, -1, 3) }, 1560 { INT_RANGE(vht_rx_mcs_nss_4, -1, 3) }, 1561 { INT_RANGE(vht_rx_mcs_nss_5, -1, 3) }, 1562 { INT_RANGE(vht_rx_mcs_nss_6, -1, 3) }, 1563 { INT_RANGE(vht_rx_mcs_nss_7, -1, 3) }, 1564 { INT_RANGE(vht_rx_mcs_nss_8, -1, 3) }, 1565 { INT_RANGE(vht_tx_mcs_nss_1, -1, 3) }, 1566 { INT_RANGE(vht_tx_mcs_nss_2, -1, 3) }, 1567 { INT_RANGE(vht_tx_mcs_nss_3, -1, 3) }, 1568 { INT_RANGE(vht_tx_mcs_nss_4, -1, 3) }, 1569 { INT_RANGE(vht_tx_mcs_nss_5, -1, 3) }, 1570 { INT_RANGE(vht_tx_mcs_nss_6, -1, 3) }, 1571 { INT_RANGE(vht_tx_mcs_nss_7, -1, 3) }, 1572 { INT_RANGE(vht_tx_mcs_nss_8, -1, 3) }, 1573 #endif /* CONFIG_VHT_OVERRIDES */ 1574 { INT(ap_max_inactivity) }, 1575 { INT(dtim_period) }, 1576 { INT(beacon_int) }, 1577 }; 1578 1579 #undef OFFSET 1580 #undef _STR 1581 #undef STR 1582 #undef STR_KEY 1583 #undef _STR_LEN 1584 #undef STR_LEN 1585 #undef STR_LEN_KEY 1586 #undef _STR_RANGE 1587 #undef STR_RANGE 1588 #undef STR_RANGE_KEY 1589 #undef _INT 1590 #undef INT 1591 #undef INT_RANGE 1592 #undef _FUNC 1593 #undef FUNC 1594 #undef FUNC_KEY 1595 #define NUM_SSID_FIELDS (sizeof(ssid_fields) / sizeof(ssid_fields[0])) 1596 1597 1598 /** 1599 * wpa_config_add_prio_network - Add a network to priority lists 1600 * @config: Configuration data from wpa_config_read() 1601 * @ssid: Pointer to the network configuration to be added to the list 1602 * Returns: 0 on success, -1 on failure 1603 * 1604 * This function is used to add a network block to the priority list of 1605 * networks. This must be called for each network when reading in the full 1606 * configuration. In addition, this can be used indirectly when updating 1607 * priorities by calling wpa_config_update_prio_list(). 1608 */ 1609 int wpa_config_add_prio_network(struct wpa_config *config, 1610 struct wpa_ssid *ssid) 1611 { 1612 int prio; 1613 struct wpa_ssid *prev, **nlist; 1614 1615 /* 1616 * Add to an existing priority list if one is available for the 1617 * configured priority level for this network. 1618 */ 1619 for (prio = 0; prio < config->num_prio; prio++) { 1620 prev = config->pssid[prio]; 1621 if (prev->priority == ssid->priority) { 1622 while (prev->pnext) 1623 prev = prev->pnext; 1624 prev->pnext = ssid; 1625 return 0; 1626 } 1627 } 1628 1629 /* First network for this priority - add a new priority list */ 1630 nlist = os_realloc_array(config->pssid, config->num_prio + 1, 1631 sizeof(struct wpa_ssid *)); 1632 if (nlist == NULL) 1633 return -1; 1634 1635 for (prio = 0; prio < config->num_prio; prio++) { 1636 if (nlist[prio]->priority < ssid->priority) { 1637 os_memmove(&nlist[prio + 1], &nlist[prio], 1638 (config->num_prio - prio) * 1639 sizeof(struct wpa_ssid *)); 1640 break; 1641 } 1642 } 1643 1644 nlist[prio] = ssid; 1645 config->num_prio++; 1646 config->pssid = nlist; 1647 1648 return 0; 1649 } 1650 1651 1652 /** 1653 * wpa_config_update_prio_list - Update network priority list 1654 * @config: Configuration data from wpa_config_read() 1655 * Returns: 0 on success, -1 on failure 1656 * 1657 * This function is called to update the priority list of networks in the 1658 * configuration when a network is being added or removed. This is also called 1659 * if a priority for a network is changed. 1660 */ 1661 int wpa_config_update_prio_list(struct wpa_config *config) 1662 { 1663 struct wpa_ssid *ssid; 1664 int ret = 0; 1665 1666 os_free(config->pssid); 1667 config->pssid = NULL; 1668 config->num_prio = 0; 1669 1670 ssid = config->ssid; 1671 while (ssid) { 1672 ssid->pnext = NULL; 1673 if (wpa_config_add_prio_network(config, ssid) < 0) 1674 ret = -1; 1675 ssid = ssid->next; 1676 } 1677 1678 return ret; 1679 } 1680 1681 1682 #ifdef IEEE8021X_EAPOL 1683 static void eap_peer_config_free(struct eap_peer_config *eap) 1684 { 1685 os_free(eap->eap_methods); 1686 os_free(eap->identity); 1687 os_free(eap->anonymous_identity); 1688 os_free(eap->password); 1689 os_free(eap->ca_cert); 1690 os_free(eap->ca_path); 1691 os_free(eap->client_cert); 1692 os_free(eap->private_key); 1693 os_free(eap->private_key_passwd); 1694 os_free(eap->dh_file); 1695 os_free(eap->subject_match); 1696 os_free(eap->altsubject_match); 1697 os_free(eap->ca_cert2); 1698 os_free(eap->ca_path2); 1699 os_free(eap->client_cert2); 1700 os_free(eap->private_key2); 1701 os_free(eap->private_key2_passwd); 1702 os_free(eap->dh_file2); 1703 os_free(eap->subject_match2); 1704 os_free(eap->altsubject_match2); 1705 os_free(eap->phase1); 1706 os_free(eap->phase2); 1707 os_free(eap->pcsc); 1708 os_free(eap->pin); 1709 os_free(eap->engine_id); 1710 os_free(eap->key_id); 1711 os_free(eap->cert_id); 1712 os_free(eap->ca_cert_id); 1713 os_free(eap->key2_id); 1714 os_free(eap->cert2_id); 1715 os_free(eap->ca_cert2_id); 1716 os_free(eap->pin2); 1717 os_free(eap->engine2_id); 1718 os_free(eap->otp); 1719 os_free(eap->pending_req_otp); 1720 os_free(eap->pac_file); 1721 os_free(eap->new_password); 1722 } 1723 #endif /* IEEE8021X_EAPOL */ 1724 1725 1726 /** 1727 * wpa_config_free_ssid - Free network/ssid configuration data 1728 * @ssid: Configuration data for the network 1729 * 1730 * This function frees all resources allocated for the network configuration 1731 * data. 1732 */ 1733 void wpa_config_free_ssid(struct wpa_ssid *ssid) 1734 { 1735 os_free(ssid->ssid); 1736 os_free(ssid->passphrase); 1737 os_free(ssid->ext_psk); 1738 #ifdef IEEE8021X_EAPOL 1739 eap_peer_config_free(&ssid->eap); 1740 #endif /* IEEE8021X_EAPOL */ 1741 os_free(ssid->id_str); 1742 os_free(ssid->scan_freq); 1743 os_free(ssid->freq_list); 1744 os_free(ssid->bgscan); 1745 os_free(ssid->p2p_client_list); 1746 #ifdef CONFIG_HT_OVERRIDES 1747 os_free(ssid->ht_mcs); 1748 #endif /* CONFIG_HT_OVERRIDES */ 1749 os_free(ssid); 1750 } 1751 1752 1753 void wpa_config_free_cred(struct wpa_cred *cred) 1754 { 1755 os_free(cred->realm); 1756 os_free(cred->username); 1757 os_free(cred->password); 1758 os_free(cred->ca_cert); 1759 os_free(cred->client_cert); 1760 os_free(cred->private_key); 1761 os_free(cred->private_key_passwd); 1762 os_free(cred->imsi); 1763 os_free(cred->milenage); 1764 os_free(cred->domain); 1765 os_free(cred->eap_method); 1766 os_free(cred->phase1); 1767 os_free(cred->phase2); 1768 os_free(cred->excluded_ssid); 1769 os_free(cred); 1770 } 1771 1772 1773 /** 1774 * wpa_config_free - Free configuration data 1775 * @config: Configuration data from wpa_config_read() 1776 * 1777 * This function frees all resources allocated for the configuration data by 1778 * wpa_config_read(). 1779 */ 1780 void wpa_config_free(struct wpa_config *config) 1781 { 1782 #ifndef CONFIG_NO_CONFIG_BLOBS 1783 struct wpa_config_blob *blob, *prevblob; 1784 #endif /* CONFIG_NO_CONFIG_BLOBS */ 1785 struct wpa_ssid *ssid, *prev = NULL; 1786 struct wpa_cred *cred, *cprev; 1787 1788 ssid = config->ssid; 1789 while (ssid) { 1790 prev = ssid; 1791 ssid = ssid->next; 1792 wpa_config_free_ssid(prev); 1793 } 1794 1795 cred = config->cred; 1796 while (cred) { 1797 cprev = cred; 1798 cred = cred->next; 1799 wpa_config_free_cred(cprev); 1800 } 1801 1802 #ifndef CONFIG_NO_CONFIG_BLOBS 1803 blob = config->blobs; 1804 prevblob = NULL; 1805 while (blob) { 1806 prevblob = blob; 1807 blob = blob->next; 1808 wpa_config_free_blob(prevblob); 1809 } 1810 #endif /* CONFIG_NO_CONFIG_BLOBS */ 1811 1812 wpabuf_free(config->wps_vendor_ext_m1); 1813 os_free(config->ctrl_interface); 1814 os_free(config->ctrl_interface_group); 1815 os_free(config->opensc_engine_path); 1816 os_free(config->pkcs11_engine_path); 1817 os_free(config->pkcs11_module_path); 1818 os_free(config->pcsc_reader); 1819 os_free(config->pcsc_pin); 1820 os_free(config->driver_param); 1821 os_free(config->device_name); 1822 os_free(config->manufacturer); 1823 os_free(config->model_name); 1824 os_free(config->model_number); 1825 os_free(config->serial_number); 1826 os_free(config->config_methods); 1827 os_free(config->p2p_ssid_postfix); 1828 os_free(config->pssid); 1829 os_free(config->p2p_pref_chan); 1830 os_free(config->autoscan); 1831 wpabuf_free(config->wps_nfc_dh_pubkey); 1832 wpabuf_free(config->wps_nfc_dh_privkey); 1833 wpabuf_free(config->wps_nfc_dev_pw); 1834 os_free(config->ext_password_backend); 1835 os_free(config->sae_groups); 1836 wpabuf_free(config->ap_vendor_elements); 1837 os_free(config); 1838 } 1839 1840 1841 /** 1842 * wpa_config_foreach_network - Iterate over each configured network 1843 * @config: Configuration data from wpa_config_read() 1844 * @func: Callback function to process each network 1845 * @arg: Opaque argument to pass to callback function 1846 * 1847 * Iterate over the set of configured networks calling the specified 1848 * function for each item. We guard against callbacks removing the 1849 * supplied network. 1850 */ 1851 void wpa_config_foreach_network(struct wpa_config *config, 1852 void (*func)(void *, struct wpa_ssid *), 1853 void *arg) 1854 { 1855 struct wpa_ssid *ssid, *next; 1856 1857 ssid = config->ssid; 1858 while (ssid) { 1859 next = ssid->next; 1860 func(arg, ssid); 1861 ssid = next; 1862 } 1863 } 1864 1865 1866 /** 1867 * wpa_config_get_network - Get configured network based on id 1868 * @config: Configuration data from wpa_config_read() 1869 * @id: Unique network id to search for 1870 * Returns: Network configuration or %NULL if not found 1871 */ 1872 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id) 1873 { 1874 struct wpa_ssid *ssid; 1875 1876 ssid = config->ssid; 1877 while (ssid) { 1878 if (id == ssid->id) 1879 break; 1880 ssid = ssid->next; 1881 } 1882 1883 return ssid; 1884 } 1885 1886 1887 /** 1888 * wpa_config_add_network - Add a new network with empty configuration 1889 * @config: Configuration data from wpa_config_read() 1890 * Returns: The new network configuration or %NULL if operation failed 1891 */ 1892 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config) 1893 { 1894 int id; 1895 struct wpa_ssid *ssid, *last = NULL; 1896 1897 id = -1; 1898 ssid = config->ssid; 1899 while (ssid) { 1900 if (ssid->id > id) 1901 id = ssid->id; 1902 last = ssid; 1903 ssid = ssid->next; 1904 } 1905 id++; 1906 1907 ssid = os_zalloc(sizeof(*ssid)); 1908 if (ssid == NULL) 1909 return NULL; 1910 ssid->id = id; 1911 if (last) 1912 last->next = ssid; 1913 else 1914 config->ssid = ssid; 1915 1916 wpa_config_update_prio_list(config); 1917 1918 return ssid; 1919 } 1920 1921 1922 /** 1923 * wpa_config_remove_network - Remove a configured network based on id 1924 * @config: Configuration data from wpa_config_read() 1925 * @id: Unique network id to search for 1926 * Returns: 0 on success, or -1 if the network was not found 1927 */ 1928 int wpa_config_remove_network(struct wpa_config *config, int id) 1929 { 1930 struct wpa_ssid *ssid, *prev = NULL; 1931 1932 ssid = config->ssid; 1933 while (ssid) { 1934 if (id == ssid->id) 1935 break; 1936 prev = ssid; 1937 ssid = ssid->next; 1938 } 1939 1940 if (ssid == NULL) 1941 return -1; 1942 1943 if (prev) 1944 prev->next = ssid->next; 1945 else 1946 config->ssid = ssid->next; 1947 1948 wpa_config_update_prio_list(config); 1949 wpa_config_free_ssid(ssid); 1950 return 0; 1951 } 1952 1953 1954 /** 1955 * wpa_config_set_network_defaults - Set network default values 1956 * @ssid: Pointer to network configuration data 1957 */ 1958 void wpa_config_set_network_defaults(struct wpa_ssid *ssid) 1959 { 1960 ssid->proto = DEFAULT_PROTO; 1961 ssid->pairwise_cipher = DEFAULT_PAIRWISE; 1962 ssid->group_cipher = DEFAULT_GROUP; 1963 ssid->key_mgmt = DEFAULT_KEY_MGMT; 1964 ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD; 1965 #ifdef IEEE8021X_EAPOL 1966 ssid->eapol_flags = DEFAULT_EAPOL_FLAGS; 1967 ssid->eap_workaround = DEFAULT_EAP_WORKAROUND; 1968 ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE; 1969 #endif /* IEEE8021X_EAPOL */ 1970 #ifdef CONFIG_HT_OVERRIDES 1971 ssid->disable_ht = DEFAULT_DISABLE_HT; 1972 ssid->disable_ht40 = DEFAULT_DISABLE_HT40; 1973 ssid->disable_sgi = DEFAULT_DISABLE_SGI; 1974 ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU; 1975 ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR; 1976 ssid->ampdu_density = DEFAULT_AMPDU_DENSITY; 1977 #endif /* CONFIG_HT_OVERRIDES */ 1978 #ifdef CONFIG_VHT_OVERRIDES 1979 ssid->vht_rx_mcs_nss_1 = -1; 1980 ssid->vht_rx_mcs_nss_2 = -1; 1981 ssid->vht_rx_mcs_nss_3 = -1; 1982 ssid->vht_rx_mcs_nss_4 = -1; 1983 ssid->vht_rx_mcs_nss_5 = -1; 1984 ssid->vht_rx_mcs_nss_6 = -1; 1985 ssid->vht_rx_mcs_nss_7 = -1; 1986 ssid->vht_rx_mcs_nss_8 = -1; 1987 ssid->vht_tx_mcs_nss_1 = -1; 1988 ssid->vht_tx_mcs_nss_2 = -1; 1989 ssid->vht_tx_mcs_nss_3 = -1; 1990 ssid->vht_tx_mcs_nss_4 = -1; 1991 ssid->vht_tx_mcs_nss_5 = -1; 1992 ssid->vht_tx_mcs_nss_6 = -1; 1993 ssid->vht_tx_mcs_nss_7 = -1; 1994 ssid->vht_tx_mcs_nss_8 = -1; 1995 #endif /* CONFIG_VHT_OVERRIDES */ 1996 ssid->proactive_key_caching = -1; 1997 #ifdef CONFIG_IEEE80211W 1998 ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT; 1999 #endif /* CONFIG_IEEE80211W */ 2000 } 2001 2002 2003 /** 2004 * wpa_config_set - Set a variable in network configuration 2005 * @ssid: Pointer to network configuration data 2006 * @var: Variable name, e.g., "ssid" 2007 * @value: Variable value 2008 * @line: Line number in configuration file or 0 if not used 2009 * Returns: 0 on success, -1 on failure 2010 * 2011 * This function can be used to set network configuration variables based on 2012 * both the configuration file and management interface input. The value 2013 * parameter must be in the same format as the text-based configuration file is 2014 * using. For example, strings are using double quotation marks. 2015 */ 2016 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value, 2017 int line) 2018 { 2019 size_t i; 2020 int ret = 0; 2021 2022 if (ssid == NULL || var == NULL || value == NULL) 2023 return -1; 2024 2025 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2026 const struct parse_data *field = &ssid_fields[i]; 2027 if (os_strcmp(var, field->name) != 0) 2028 continue; 2029 2030 if (field->parser(field, ssid, line, value)) { 2031 if (line) { 2032 wpa_printf(MSG_ERROR, "Line %d: failed to " 2033 "parse %s '%s'.", line, var, value); 2034 } 2035 ret = -1; 2036 } 2037 break; 2038 } 2039 if (i == NUM_SSID_FIELDS) { 2040 if (line) { 2041 wpa_printf(MSG_ERROR, "Line %d: unknown network field " 2042 "'%s'.", line, var); 2043 } 2044 ret = -1; 2045 } 2046 2047 return ret; 2048 } 2049 2050 2051 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var, 2052 const char *value) 2053 { 2054 size_t len; 2055 char *buf; 2056 int ret; 2057 2058 len = os_strlen(value); 2059 buf = os_malloc(len + 3); 2060 if (buf == NULL) 2061 return -1; 2062 buf[0] = '"'; 2063 os_memcpy(buf + 1, value, len); 2064 buf[len + 1] = '"'; 2065 buf[len + 2] = '\0'; 2066 ret = wpa_config_set(ssid, var, buf, 0); 2067 os_free(buf); 2068 return ret; 2069 } 2070 2071 2072 /** 2073 * wpa_config_get_all - Get all options from network configuration 2074 * @ssid: Pointer to network configuration data 2075 * @get_keys: Determines if keys/passwords will be included in returned list 2076 * (if they may be exported) 2077 * Returns: %NULL terminated list of all set keys and their values in the form 2078 * of [key1, val1, key2, val2, ... , NULL] 2079 * 2080 * This function can be used to get list of all configured network properties. 2081 * The caller is responsible for freeing the returned list and all its 2082 * elements. 2083 */ 2084 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys) 2085 { 2086 const struct parse_data *field; 2087 char *key, *value; 2088 size_t i; 2089 char **props; 2090 int fields_num; 2091 2092 get_keys = get_keys && ssid->export_keys; 2093 2094 props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *)); 2095 if (!props) 2096 return NULL; 2097 2098 fields_num = 0; 2099 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2100 field = &ssid_fields[i]; 2101 if (field->key_data && !get_keys) 2102 continue; 2103 value = field->writer(field, ssid); 2104 if (value == NULL) 2105 continue; 2106 if (os_strlen(value) == 0) { 2107 os_free(value); 2108 continue; 2109 } 2110 2111 key = os_strdup(field->name); 2112 if (key == NULL) { 2113 os_free(value); 2114 goto err; 2115 } 2116 2117 props[fields_num * 2] = key; 2118 props[fields_num * 2 + 1] = value; 2119 2120 fields_num++; 2121 } 2122 2123 return props; 2124 2125 err: 2126 value = *props; 2127 while (value) 2128 os_free(value++); 2129 os_free(props); 2130 return NULL; 2131 } 2132 2133 2134 #ifndef NO_CONFIG_WRITE 2135 /** 2136 * wpa_config_get - Get a variable in network configuration 2137 * @ssid: Pointer to network configuration data 2138 * @var: Variable name, e.g., "ssid" 2139 * Returns: Value of the variable or %NULL on failure 2140 * 2141 * This function can be used to get network configuration variables. The 2142 * returned value is a copy of the configuration variable in text format, i.e,. 2143 * the same format that the text-based configuration file and wpa_config_set() 2144 * are using for the value. The caller is responsible for freeing the returned 2145 * value. 2146 */ 2147 char * wpa_config_get(struct wpa_ssid *ssid, const char *var) 2148 { 2149 size_t i; 2150 2151 if (ssid == NULL || var == NULL) 2152 return NULL; 2153 2154 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2155 const struct parse_data *field = &ssid_fields[i]; 2156 if (os_strcmp(var, field->name) == 0) 2157 return field->writer(field, ssid); 2158 } 2159 2160 return NULL; 2161 } 2162 2163 2164 /** 2165 * wpa_config_get_no_key - Get a variable in network configuration (no keys) 2166 * @ssid: Pointer to network configuration data 2167 * @var: Variable name, e.g., "ssid" 2168 * Returns: Value of the variable or %NULL on failure 2169 * 2170 * This function can be used to get network configuration variable like 2171 * wpa_config_get(). The only difference is that this functions does not expose 2172 * key/password material from the configuration. In case a key/password field 2173 * is requested, the returned value is an empty string or %NULL if the variable 2174 * is not set or "*" if the variable is set (regardless of its value). The 2175 * returned value is a copy of the configuration variable in text format, i.e,. 2176 * the same format that the text-based configuration file and wpa_config_set() 2177 * are using for the value. The caller is responsible for freeing the returned 2178 * value. 2179 */ 2180 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var) 2181 { 2182 size_t i; 2183 2184 if (ssid == NULL || var == NULL) 2185 return NULL; 2186 2187 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2188 const struct parse_data *field = &ssid_fields[i]; 2189 if (os_strcmp(var, field->name) == 0) { 2190 char *res = field->writer(field, ssid); 2191 if (field->key_data) { 2192 if (res && res[0]) { 2193 wpa_printf(MSG_DEBUG, "Do not allow " 2194 "key_data field to be " 2195 "exposed"); 2196 os_free(res); 2197 return os_strdup("*"); 2198 } 2199 2200 os_free(res); 2201 return NULL; 2202 } 2203 return res; 2204 } 2205 } 2206 2207 return NULL; 2208 } 2209 #endif /* NO_CONFIG_WRITE */ 2210 2211 2212 /** 2213 * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID 2214 * @ssid: Pointer to network configuration data 2215 * 2216 * This function must be called to update WPA PSK when either SSID or the 2217 * passphrase has changed for the network configuration. 2218 */ 2219 void wpa_config_update_psk(struct wpa_ssid *ssid) 2220 { 2221 #ifndef CONFIG_NO_PBKDF2 2222 pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096, 2223 ssid->psk, PMK_LEN); 2224 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)", 2225 ssid->psk, PMK_LEN); 2226 ssid->psk_set = 1; 2227 #endif /* CONFIG_NO_PBKDF2 */ 2228 } 2229 2230 2231 int wpa_config_set_cred(struct wpa_cred *cred, const char *var, 2232 const char *value, int line) 2233 { 2234 char *val; 2235 size_t len; 2236 2237 if (os_strcmp(var, "priority") == 0) { 2238 cred->priority = atoi(value); 2239 return 0; 2240 } 2241 2242 if (os_strcmp(var, "pcsc") == 0) { 2243 cred->pcsc = atoi(value); 2244 return 0; 2245 } 2246 2247 if (os_strcmp(var, "eap") == 0) { 2248 struct eap_method_type method; 2249 method.method = eap_peer_get_type(value, &method.vendor); 2250 if (method.vendor == EAP_VENDOR_IETF && 2251 method.method == EAP_TYPE_NONE) { 2252 wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' " 2253 "for a credential", line, value); 2254 return -1; 2255 } 2256 os_free(cred->eap_method); 2257 cred->eap_method = os_malloc(sizeof(*cred->eap_method)); 2258 if (cred->eap_method == NULL) 2259 return -1; 2260 os_memcpy(cred->eap_method, &method, sizeof(method)); 2261 return 0; 2262 } 2263 2264 if (os_strcmp(var, "password") == 0 && 2265 os_strncmp(value, "ext:", 4) == 0) { 2266 os_free(cred->password); 2267 cred->password = os_strdup(value); 2268 cred->ext_password = 1; 2269 return 0; 2270 } 2271 2272 val = wpa_config_parse_string(value, &len); 2273 if (val == NULL) { 2274 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string " 2275 "value '%s'.", line, var, value); 2276 return -1; 2277 } 2278 2279 if (os_strcmp(var, "realm") == 0) { 2280 os_free(cred->realm); 2281 cred->realm = val; 2282 return 0; 2283 } 2284 2285 if (os_strcmp(var, "username") == 0) { 2286 os_free(cred->username); 2287 cred->username = val; 2288 return 0; 2289 } 2290 2291 if (os_strcmp(var, "password") == 0) { 2292 os_free(cred->password); 2293 cred->password = val; 2294 cred->ext_password = 0; 2295 return 0; 2296 } 2297 2298 if (os_strcmp(var, "ca_cert") == 0) { 2299 os_free(cred->ca_cert); 2300 cred->ca_cert = val; 2301 return 0; 2302 } 2303 2304 if (os_strcmp(var, "client_cert") == 0) { 2305 os_free(cred->client_cert); 2306 cred->client_cert = val; 2307 return 0; 2308 } 2309 2310 if (os_strcmp(var, "private_key") == 0) { 2311 os_free(cred->private_key); 2312 cred->private_key = val; 2313 return 0; 2314 } 2315 2316 if (os_strcmp(var, "private_key_passwd") == 0) { 2317 os_free(cred->private_key_passwd); 2318 cred->private_key_passwd = val; 2319 return 0; 2320 } 2321 2322 if (os_strcmp(var, "imsi") == 0) { 2323 os_free(cred->imsi); 2324 cred->imsi = val; 2325 return 0; 2326 } 2327 2328 if (os_strcmp(var, "milenage") == 0) { 2329 os_free(cred->milenage); 2330 cred->milenage = val; 2331 return 0; 2332 } 2333 2334 if (os_strcmp(var, "domain") == 0) { 2335 os_free(cred->domain); 2336 cred->domain = val; 2337 return 0; 2338 } 2339 2340 if (os_strcmp(var, "phase1") == 0) { 2341 os_free(cred->phase1); 2342 cred->phase1 = val; 2343 return 0; 2344 } 2345 2346 if (os_strcmp(var, "phase2") == 0) { 2347 os_free(cred->phase2); 2348 cred->phase2 = val; 2349 return 0; 2350 } 2351 2352 if (os_strcmp(var, "roaming_consortium") == 0) { 2353 if (len < 3 || len > sizeof(cred->roaming_consortium)) { 2354 wpa_printf(MSG_ERROR, "Line %d: invalid " 2355 "roaming_consortium length %d (3..15 " 2356 "expected)", line, (int) len); 2357 os_free(val); 2358 return -1; 2359 } 2360 os_memcpy(cred->roaming_consortium, val, len); 2361 cred->roaming_consortium_len = len; 2362 os_free(val); 2363 return 0; 2364 } 2365 2366 if (os_strcmp(var, "excluded_ssid") == 0) { 2367 struct excluded_ssid *e; 2368 2369 if (len > MAX_SSID_LEN) { 2370 wpa_printf(MSG_ERROR, "Line %d: invalid " 2371 "excluded_ssid length %d", line, (int) len); 2372 os_free(val); 2373 return -1; 2374 } 2375 2376 e = os_realloc_array(cred->excluded_ssid, 2377 cred->num_excluded_ssid + 1, 2378 sizeof(struct excluded_ssid)); 2379 if (e == NULL) { 2380 os_free(val); 2381 return -1; 2382 } 2383 cred->excluded_ssid = e; 2384 2385 e = &cred->excluded_ssid[cred->num_excluded_ssid++]; 2386 os_memcpy(e->ssid, val, len); 2387 e->ssid_len = len; 2388 2389 os_free(val); 2390 2391 return 0; 2392 } 2393 2394 if (line) { 2395 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.", 2396 line, var); 2397 } 2398 2399 os_free(val); 2400 2401 return -1; 2402 } 2403 2404 2405 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id) 2406 { 2407 struct wpa_cred *cred; 2408 2409 cred = config->cred; 2410 while (cred) { 2411 if (id == cred->id) 2412 break; 2413 cred = cred->next; 2414 } 2415 2416 return cred; 2417 } 2418 2419 2420 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config) 2421 { 2422 int id; 2423 struct wpa_cred *cred, *last = NULL; 2424 2425 id = -1; 2426 cred = config->cred; 2427 while (cred) { 2428 if (cred->id > id) 2429 id = cred->id; 2430 last = cred; 2431 cred = cred->next; 2432 } 2433 id++; 2434 2435 cred = os_zalloc(sizeof(*cred)); 2436 if (cred == NULL) 2437 return NULL; 2438 cred->id = id; 2439 if (last) 2440 last->next = cred; 2441 else 2442 config->cred = cred; 2443 2444 return cred; 2445 } 2446 2447 2448 int wpa_config_remove_cred(struct wpa_config *config, int id) 2449 { 2450 struct wpa_cred *cred, *prev = NULL; 2451 2452 cred = config->cred; 2453 while (cred) { 2454 if (id == cred->id) 2455 break; 2456 prev = cred; 2457 cred = cred->next; 2458 } 2459 2460 if (cred == NULL) 2461 return -1; 2462 2463 if (prev) 2464 prev->next = cred->next; 2465 else 2466 config->cred = cred->next; 2467 2468 wpa_config_free_cred(cred); 2469 return 0; 2470 } 2471 2472 2473 #ifndef CONFIG_NO_CONFIG_BLOBS 2474 /** 2475 * wpa_config_get_blob - Get a named configuration blob 2476 * @config: Configuration data from wpa_config_read() 2477 * @name: Name of the blob 2478 * Returns: Pointer to blob data or %NULL if not found 2479 */ 2480 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config, 2481 const char *name) 2482 { 2483 struct wpa_config_blob *blob = config->blobs; 2484 2485 while (blob) { 2486 if (os_strcmp(blob->name, name) == 0) 2487 return blob; 2488 blob = blob->next; 2489 } 2490 return NULL; 2491 } 2492 2493 2494 /** 2495 * wpa_config_set_blob - Set or add a named configuration blob 2496 * @config: Configuration data from wpa_config_read() 2497 * @blob: New value for the blob 2498 * 2499 * Adds a new configuration blob or replaces the current value of an existing 2500 * blob. 2501 */ 2502 void wpa_config_set_blob(struct wpa_config *config, 2503 struct wpa_config_blob *blob) 2504 { 2505 wpa_config_remove_blob(config, blob->name); 2506 blob->next = config->blobs; 2507 config->blobs = blob; 2508 } 2509 2510 2511 /** 2512 * wpa_config_free_blob - Free blob data 2513 * @blob: Pointer to blob to be freed 2514 */ 2515 void wpa_config_free_blob(struct wpa_config_blob *blob) 2516 { 2517 if (blob) { 2518 os_free(blob->name); 2519 os_free(blob->data); 2520 os_free(blob); 2521 } 2522 } 2523 2524 2525 /** 2526 * wpa_config_remove_blob - Remove a named configuration blob 2527 * @config: Configuration data from wpa_config_read() 2528 * @name: Name of the blob to remove 2529 * Returns: 0 if blob was removed or -1 if blob was not found 2530 */ 2531 int wpa_config_remove_blob(struct wpa_config *config, const char *name) 2532 { 2533 struct wpa_config_blob *pos = config->blobs, *prev = NULL; 2534 2535 while (pos) { 2536 if (os_strcmp(pos->name, name) == 0) { 2537 if (prev) 2538 prev->next = pos->next; 2539 else 2540 config->blobs = pos->next; 2541 wpa_config_free_blob(pos); 2542 return 0; 2543 } 2544 prev = pos; 2545 pos = pos->next; 2546 } 2547 2548 return -1; 2549 } 2550 #endif /* CONFIG_NO_CONFIG_BLOBS */ 2551 2552 2553 /** 2554 * wpa_config_alloc_empty - Allocate an empty configuration 2555 * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain 2556 * socket 2557 * @driver_param: Driver parameters 2558 * Returns: Pointer to allocated configuration data or %NULL on failure 2559 */ 2560 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface, 2561 const char *driver_param) 2562 { 2563 struct wpa_config *config; 2564 const int aCWmin = 4, aCWmax = 10; 2565 const struct hostapd_wmm_ac_params ac_bk = 2566 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */ 2567 const struct hostapd_wmm_ac_params ac_be = 2568 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */ 2569 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */ 2570 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 }; 2571 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */ 2572 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 }; 2573 2574 config = os_zalloc(sizeof(*config)); 2575 if (config == NULL) 2576 return NULL; 2577 config->eapol_version = DEFAULT_EAPOL_VERSION; 2578 config->ap_scan = DEFAULT_AP_SCAN; 2579 config->fast_reauth = DEFAULT_FAST_REAUTH; 2580 config->p2p_go_intent = DEFAULT_P2P_GO_INTENT; 2581 config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS; 2582 config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY; 2583 config->bss_max_count = DEFAULT_BSS_MAX_COUNT; 2584 config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE; 2585 config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT; 2586 config->max_num_sta = DEFAULT_MAX_NUM_STA; 2587 config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE; 2588 config->wmm_ac_params[0] = ac_be; 2589 config->wmm_ac_params[1] = ac_bk; 2590 config->wmm_ac_params[2] = ac_vi; 2591 config->wmm_ac_params[3] = ac_vo; 2592 2593 if (ctrl_interface) 2594 config->ctrl_interface = os_strdup(ctrl_interface); 2595 if (driver_param) 2596 config->driver_param = os_strdup(driver_param); 2597 2598 return config; 2599 } 2600 2601 2602 #ifndef CONFIG_NO_STDOUT_DEBUG 2603 /** 2604 * wpa_config_debug_dump_networks - Debug dump of configured networks 2605 * @config: Configuration data from wpa_config_read() 2606 */ 2607 void wpa_config_debug_dump_networks(struct wpa_config *config) 2608 { 2609 int prio; 2610 struct wpa_ssid *ssid; 2611 2612 for (prio = 0; prio < config->num_prio; prio++) { 2613 ssid = config->pssid[prio]; 2614 wpa_printf(MSG_DEBUG, "Priority group %d", 2615 ssid->priority); 2616 while (ssid) { 2617 wpa_printf(MSG_DEBUG, " id=%d ssid='%s'", 2618 ssid->id, 2619 wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 2620 ssid = ssid->pnext; 2621 } 2622 } 2623 } 2624 #endif /* CONFIG_NO_STDOUT_DEBUG */ 2625 2626 2627 struct global_parse_data { 2628 char *name; 2629 int (*parser)(const struct global_parse_data *data, 2630 struct wpa_config *config, int line, const char *value); 2631 void *param1, *param2, *param3; 2632 unsigned int changed_flag; 2633 }; 2634 2635 2636 static int wpa_global_config_parse_int(const struct global_parse_data *data, 2637 struct wpa_config *config, int line, 2638 const char *pos) 2639 { 2640 int val, *dst; 2641 char *end; 2642 2643 dst = (int *) (((u8 *) config) + (long) data->param1); 2644 val = strtol(pos, &end, 0); 2645 if (*end) { 2646 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"", 2647 line, pos); 2648 return -1; 2649 } 2650 *dst = val; 2651 2652 wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst); 2653 2654 if (data->param2 && *dst < (long) data->param2) { 2655 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d " 2656 "min_value=%ld)", line, data->name, *dst, 2657 (long) data->param2); 2658 *dst = (long) data->param2; 2659 return -1; 2660 } 2661 2662 if (data->param3 && *dst > (long) data->param3) { 2663 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d " 2664 "max_value=%ld)", line, data->name, *dst, 2665 (long) data->param3); 2666 *dst = (long) data->param3; 2667 return -1; 2668 } 2669 2670 return 0; 2671 } 2672 2673 2674 static int wpa_global_config_parse_str(const struct global_parse_data *data, 2675 struct wpa_config *config, int line, 2676 const char *pos) 2677 { 2678 size_t len; 2679 char **dst, *tmp; 2680 2681 len = os_strlen(pos); 2682 if (data->param2 && len < (size_t) data->param2) { 2683 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu " 2684 "min_len=%ld)", line, data->name, 2685 (unsigned long) len, (long) data->param2); 2686 return -1; 2687 } 2688 2689 if (data->param3 && len > (size_t) data->param3) { 2690 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu " 2691 "max_len=%ld)", line, data->name, 2692 (unsigned long) len, (long) data->param3); 2693 return -1; 2694 } 2695 2696 tmp = os_strdup(pos); 2697 if (tmp == NULL) 2698 return -1; 2699 2700 dst = (char **) (((u8 *) config) + (long) data->param1); 2701 os_free(*dst); 2702 *dst = tmp; 2703 wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst); 2704 2705 return 0; 2706 } 2707 2708 2709 static int wpa_global_config_parse_bin(const struct global_parse_data *data, 2710 struct wpa_config *config, int line, 2711 const char *pos) 2712 { 2713 size_t len; 2714 struct wpabuf **dst, *tmp; 2715 2716 len = os_strlen(pos); 2717 if (len & 0x01) 2718 return -1; 2719 2720 tmp = wpabuf_alloc(len / 2); 2721 if (tmp == NULL) 2722 return -1; 2723 2724 if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) { 2725 wpabuf_free(tmp); 2726 return -1; 2727 } 2728 2729 dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1); 2730 wpabuf_free(*dst); 2731 *dst = tmp; 2732 wpa_printf(MSG_DEBUG, "%s", data->name); 2733 2734 return 0; 2735 } 2736 2737 2738 static int wpa_config_process_country(const struct global_parse_data *data, 2739 struct wpa_config *config, int line, 2740 const char *pos) 2741 { 2742 if (!pos[0] || !pos[1]) { 2743 wpa_printf(MSG_DEBUG, "Invalid country set"); 2744 return -1; 2745 } 2746 config->country[0] = pos[0]; 2747 config->country[1] = pos[1]; 2748 wpa_printf(MSG_DEBUG, "country='%c%c'", 2749 config->country[0], config->country[1]); 2750 return 0; 2751 } 2752 2753 2754 static int wpa_config_process_load_dynamic_eap( 2755 const struct global_parse_data *data, struct wpa_config *config, 2756 int line, const char *so) 2757 { 2758 int ret; 2759 wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so); 2760 ret = eap_peer_method_load(so); 2761 if (ret == -2) { 2762 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not " 2763 "reloading."); 2764 } else if (ret) { 2765 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP " 2766 "method '%s'.", line, so); 2767 return -1; 2768 } 2769 2770 return 0; 2771 } 2772 2773 2774 #ifdef CONFIG_WPS 2775 2776 static int wpa_config_process_uuid(const struct global_parse_data *data, 2777 struct wpa_config *config, int line, 2778 const char *pos) 2779 { 2780 char buf[40]; 2781 if (uuid_str2bin(pos, config->uuid)) { 2782 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line); 2783 return -1; 2784 } 2785 uuid_bin2str(config->uuid, buf, sizeof(buf)); 2786 wpa_printf(MSG_DEBUG, "uuid=%s", buf); 2787 return 0; 2788 } 2789 2790 2791 static int wpa_config_process_device_type( 2792 const struct global_parse_data *data, 2793 struct wpa_config *config, int line, const char *pos) 2794 { 2795 return wps_dev_type_str2bin(pos, config->device_type); 2796 } 2797 2798 2799 static int wpa_config_process_os_version(const struct global_parse_data *data, 2800 struct wpa_config *config, int line, 2801 const char *pos) 2802 { 2803 if (hexstr2bin(pos, config->os_version, 4)) { 2804 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line); 2805 return -1; 2806 } 2807 wpa_printf(MSG_DEBUG, "os_version=%08x", 2808 WPA_GET_BE32(config->os_version)); 2809 return 0; 2810 } 2811 2812 2813 static int wpa_config_process_wps_vendor_ext_m1( 2814 const struct global_parse_data *data, 2815 struct wpa_config *config, int line, const char *pos) 2816 { 2817 struct wpabuf *tmp; 2818 int len = os_strlen(pos) / 2; 2819 u8 *p; 2820 2821 if (!len) { 2822 wpa_printf(MSG_ERROR, "Line %d: " 2823 "invalid wps_vendor_ext_m1", line); 2824 return -1; 2825 } 2826 2827 tmp = wpabuf_alloc(len); 2828 if (tmp) { 2829 p = wpabuf_put(tmp, len); 2830 2831 if (hexstr2bin(pos, p, len)) { 2832 wpa_printf(MSG_ERROR, "Line %d: " 2833 "invalid wps_vendor_ext_m1", line); 2834 wpabuf_free(tmp); 2835 return -1; 2836 } 2837 2838 wpabuf_free(config->wps_vendor_ext_m1); 2839 config->wps_vendor_ext_m1 = tmp; 2840 } else { 2841 wpa_printf(MSG_ERROR, "Can not allocate " 2842 "memory for wps_vendor_ext_m1"); 2843 return -1; 2844 } 2845 2846 return 0; 2847 } 2848 2849 #endif /* CONFIG_WPS */ 2850 2851 #ifdef CONFIG_P2P 2852 static int wpa_config_process_sec_device_type( 2853 const struct global_parse_data *data, 2854 struct wpa_config *config, int line, const char *pos) 2855 { 2856 int idx; 2857 2858 if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) { 2859 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type " 2860 "items", line); 2861 return -1; 2862 } 2863 2864 idx = config->num_sec_device_types; 2865 2866 if (wps_dev_type_str2bin(pos, config->sec_device_type[idx])) 2867 return -1; 2868 2869 config->num_sec_device_types++; 2870 return 0; 2871 } 2872 2873 2874 static int wpa_config_process_p2p_pref_chan( 2875 const struct global_parse_data *data, 2876 struct wpa_config *config, int line, const char *pos) 2877 { 2878 struct p2p_channel *pref = NULL, *n; 2879 unsigned int num = 0; 2880 const char *pos2; 2881 u8 op_class, chan; 2882 2883 /* format: class:chan,class:chan,... */ 2884 2885 while (*pos) { 2886 op_class = atoi(pos); 2887 pos2 = os_strchr(pos, ':'); 2888 if (pos2 == NULL) 2889 goto fail; 2890 pos2++; 2891 chan = atoi(pos2); 2892 2893 n = os_realloc_array(pref, num + 1, 2894 sizeof(struct p2p_channel)); 2895 if (n == NULL) 2896 goto fail; 2897 pref = n; 2898 pref[num].op_class = op_class; 2899 pref[num].chan = chan; 2900 num++; 2901 2902 pos = os_strchr(pos2, ','); 2903 if (pos == NULL) 2904 break; 2905 pos++; 2906 } 2907 2908 os_free(config->p2p_pref_chan); 2909 config->p2p_pref_chan = pref; 2910 config->num_p2p_pref_chan = num; 2911 wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs", 2912 (u8 *) config->p2p_pref_chan, 2913 config->num_p2p_pref_chan * sizeof(struct p2p_channel)); 2914 2915 return 0; 2916 2917 fail: 2918 os_free(pref); 2919 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line); 2920 return -1; 2921 } 2922 #endif /* CONFIG_P2P */ 2923 2924 2925 static int wpa_config_process_hessid( 2926 const struct global_parse_data *data, 2927 struct wpa_config *config, int line, const char *pos) 2928 { 2929 if (hwaddr_aton2(pos, config->hessid) < 0) { 2930 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'", 2931 line, pos); 2932 return -1; 2933 } 2934 2935 return 0; 2936 } 2937 2938 2939 static int wpa_config_process_sae_groups( 2940 const struct global_parse_data *data, 2941 struct wpa_config *config, int line, const char *pos) 2942 { 2943 int *groups = wpa_config_parse_int_array(pos); 2944 if (groups == NULL) { 2945 wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'", 2946 line, pos); 2947 return -1; 2948 } 2949 2950 os_free(config->sae_groups); 2951 config->sae_groups = groups; 2952 2953 return 0; 2954 } 2955 2956 2957 static int wpa_config_process_ap_vendor_elements( 2958 const struct global_parse_data *data, 2959 struct wpa_config *config, int line, const char *pos) 2960 { 2961 struct wpabuf *tmp; 2962 int len = os_strlen(pos) / 2; 2963 u8 *p; 2964 2965 if (!len) { 2966 wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements", 2967 line); 2968 return -1; 2969 } 2970 2971 tmp = wpabuf_alloc(len); 2972 if (tmp) { 2973 p = wpabuf_put(tmp, len); 2974 2975 if (hexstr2bin(pos, p, len)) { 2976 wpa_printf(MSG_ERROR, "Line %d: invalid " 2977 "ap_vendor_elements", line); 2978 wpabuf_free(tmp); 2979 return -1; 2980 } 2981 2982 wpabuf_free(config->ap_vendor_elements); 2983 config->ap_vendor_elements = tmp; 2984 } else { 2985 wpa_printf(MSG_ERROR, "Cannot allocate memory for " 2986 "ap_vendor_elements"); 2987 return -1; 2988 } 2989 2990 return 0; 2991 } 2992 2993 2994 #ifdef OFFSET 2995 #undef OFFSET 2996 #endif /* OFFSET */ 2997 /* OFFSET: Get offset of a variable within the wpa_config structure */ 2998 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v) 2999 3000 #define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL 3001 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL 3002 #define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f) 3003 #define INT(f) _INT(f), NULL, NULL 3004 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max 3005 #define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f) 3006 #define STR(f) _STR(f), NULL, NULL 3007 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max 3008 #define BIN(f) #f, wpa_global_config_parse_bin, OFFSET(f), NULL, NULL 3009 3010 static const struct global_parse_data global_fields[] = { 3011 #ifdef CONFIG_CTRL_IFACE 3012 { STR(ctrl_interface), 0 }, 3013 { STR(ctrl_interface_group), 0 } /* deprecated */, 3014 #endif /* CONFIG_CTRL_IFACE */ 3015 { INT_RANGE(eapol_version, 1, 2), 0 }, 3016 { INT(ap_scan), 0 }, 3017 { INT(disable_scan_offload), 0 }, 3018 { INT(fast_reauth), 0 }, 3019 { STR(opensc_engine_path), 0 }, 3020 { STR(pkcs11_engine_path), 0 }, 3021 { STR(pkcs11_module_path), 0 }, 3022 { STR(pcsc_reader), 0 }, 3023 { STR(pcsc_pin), 0 }, 3024 { STR(driver_param), 0 }, 3025 { INT(dot11RSNAConfigPMKLifetime), 0 }, 3026 { INT(dot11RSNAConfigPMKReauthThreshold), 0 }, 3027 { INT(dot11RSNAConfigSATimeout), 0 }, 3028 #ifndef CONFIG_NO_CONFIG_WRITE 3029 { INT(update_config), 0 }, 3030 #endif /* CONFIG_NO_CONFIG_WRITE */ 3031 { FUNC_NO_VAR(load_dynamic_eap), 0 }, 3032 #ifdef CONFIG_WPS 3033 { FUNC(uuid), CFG_CHANGED_UUID }, 3034 { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME }, 3035 { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING }, 3036 { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING }, 3037 { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING }, 3038 { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING }, 3039 { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE }, 3040 { FUNC(os_version), CFG_CHANGED_OS_VERSION }, 3041 { STR(config_methods), CFG_CHANGED_CONFIG_METHODS }, 3042 { INT_RANGE(wps_cred_processing, 0, 2), 0 }, 3043 { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION }, 3044 #endif /* CONFIG_WPS */ 3045 #ifdef CONFIG_P2P 3046 { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE }, 3047 { INT(p2p_listen_reg_class), 0 }, 3048 { INT(p2p_listen_channel), 0 }, 3049 { INT(p2p_oper_reg_class), 0 }, 3050 { INT(p2p_oper_channel), 0 }, 3051 { INT_RANGE(p2p_go_intent, 0, 15), 0 }, 3052 { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX }, 3053 { INT_RANGE(persistent_reconnect, 0, 1), 0 }, 3054 { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS }, 3055 { INT(p2p_group_idle), 0 }, 3056 { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN }, 3057 { INT(p2p_go_ht40), 0 }, 3058 { INT(p2p_disabled), 0 }, 3059 { INT(p2p_no_group_iface), 0 }, 3060 { INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 }, 3061 #endif /* CONFIG_P2P */ 3062 { FUNC(country), CFG_CHANGED_COUNTRY }, 3063 { INT(bss_max_count), 0 }, 3064 { INT(bss_expiration_age), 0 }, 3065 { INT(bss_expiration_scan_count), 0 }, 3066 { INT_RANGE(filter_ssids, 0, 1), 0 }, 3067 { INT_RANGE(filter_rssi, -100, 0), 0 }, 3068 { INT(max_num_sta), 0 }, 3069 { INT_RANGE(disassoc_low_ack, 0, 1), 0 }, 3070 #ifdef CONFIG_HS20 3071 { INT_RANGE(hs20, 0, 1), 0 }, 3072 #endif /* CONFIG_HS20 */ 3073 { INT_RANGE(interworking, 0, 1), 0 }, 3074 { FUNC(hessid), 0 }, 3075 { INT_RANGE(access_network_type, 0, 15), 0 }, 3076 { INT_RANGE(pbc_in_m1, 0, 1), 0 }, 3077 { STR(autoscan), 0 }, 3078 { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff), 3079 CFG_CHANGED_NFC_PASSWORD_TOKEN }, 3080 { BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN }, 3081 { BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN }, 3082 { BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN }, 3083 { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND }, 3084 { INT(p2p_go_max_inactivity), 0 }, 3085 { INT_RANGE(auto_interworking, 0, 1), 0 }, 3086 { INT(okc), 0 }, 3087 { INT(pmf), 0 }, 3088 { FUNC(sae_groups), 0 }, 3089 { INT(dtim_period), 0 }, 3090 { INT(beacon_int), 0 }, 3091 { FUNC(ap_vendor_elements), 0 }, 3092 { INT_RANGE(ignore_old_scan_res, 0, 1), 0 }, 3093 }; 3094 3095 #undef FUNC 3096 #undef _INT 3097 #undef INT 3098 #undef INT_RANGE 3099 #undef _STR 3100 #undef STR 3101 #undef STR_RANGE 3102 #undef BIN 3103 #define NUM_GLOBAL_FIELDS (sizeof(global_fields) / sizeof(global_fields[0])) 3104 3105 3106 int wpa_config_process_global(struct wpa_config *config, char *pos, int line) 3107 { 3108 size_t i; 3109 int ret = 0; 3110 3111 for (i = 0; i < NUM_GLOBAL_FIELDS; i++) { 3112 const struct global_parse_data *field = &global_fields[i]; 3113 size_t flen = os_strlen(field->name); 3114 if (os_strncmp(pos, field->name, flen) != 0 || 3115 pos[flen] != '=') 3116 continue; 3117 3118 if (field->parser(field, config, line, pos + flen + 1)) { 3119 wpa_printf(MSG_ERROR, "Line %d: failed to " 3120 "parse '%s'.", line, pos); 3121 ret = -1; 3122 } 3123 if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN) 3124 config->wps_nfc_pw_from_config = 1; 3125 config->changed_parameters |= field->changed_flag; 3126 break; 3127 } 3128 if (i == NUM_GLOBAL_FIELDS) { 3129 #ifdef CONFIG_AP 3130 if (os_strncmp(pos, "wmm_ac_", 7) == 0) { 3131 char *tmp = os_strchr(pos, '='); 3132 if (tmp == NULL) { 3133 if (line < 0) 3134 return -1; 3135 wpa_printf(MSG_ERROR, "Line %d: invalid line " 3136 "'%s'", line, pos); 3137 return -1; 3138 } 3139 *tmp++ = '\0'; 3140 if (hostapd_config_wmm_ac(config->wmm_ac_params, pos, 3141 tmp)) { 3142 wpa_printf(MSG_ERROR, "Line %d: invalid WMM " 3143 "AC item", line); 3144 return -1; 3145 } 3146 } 3147 #endif /* CONFIG_AP */ 3148 if (line < 0) 3149 return -1; 3150 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.", 3151 line, pos); 3152 ret = -1; 3153 } 3154 3155 return ret; 3156 } 3157
