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 *dst; 182 183 dst = (int *) (((u8 *) ssid) + (long) data->param1); 184 *dst = atoi(value); 185 wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst); 186 187 if (data->param3 && *dst < (long) data->param3) { 188 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d " 189 "min_value=%ld)", line, data->name, *dst, 190 (long) data->param3); 191 *dst = (long) data->param3; 192 return -1; 193 } 194 195 if (data->param4 && *dst > (long) data->param4) { 196 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d " 197 "max_value=%ld)", line, data->name, *dst, 198 (long) data->param4); 199 *dst = (long) data->param4; 200 return -1; 201 } 202 203 return 0; 204 } 205 206 207 #ifndef NO_CONFIG_WRITE 208 static char * wpa_config_write_int(const struct parse_data *data, 209 struct wpa_ssid *ssid) 210 { 211 int *src, res; 212 char *value; 213 214 src = (int *) (((u8 *) ssid) + (long) data->param1); 215 216 value = os_malloc(20); 217 if (value == NULL) 218 return NULL; 219 res = os_snprintf(value, 20, "%d", *src); 220 if (res < 0 || res >= 20) { 221 os_free(value); 222 return NULL; 223 } 224 value[20 - 1] = '\0'; 225 return value; 226 } 227 #endif /* NO_CONFIG_WRITE */ 228 229 230 static int wpa_config_parse_bssid(const struct parse_data *data, 231 struct wpa_ssid *ssid, int line, 232 const char *value) 233 { 234 if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 || 235 os_strcmp(value, "any") == 0) { 236 ssid->bssid_set = 0; 237 wpa_printf(MSG_MSGDUMP, "BSSID any"); 238 return 0; 239 } 240 if (hwaddr_aton(value, ssid->bssid)) { 241 wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.", 242 line, value); 243 return -1; 244 } 245 ssid->bssid_set = 1; 246 wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN); 247 return 0; 248 } 249 250 251 #ifndef NO_CONFIG_WRITE 252 static char * wpa_config_write_bssid(const struct parse_data *data, 253 struct wpa_ssid *ssid) 254 { 255 char *value; 256 int res; 257 258 if (!ssid->bssid_set) 259 return NULL; 260 261 value = os_malloc(20); 262 if (value == NULL) 263 return NULL; 264 res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid)); 265 if (res < 0 || res >= 20) { 266 os_free(value); 267 return NULL; 268 } 269 value[20 - 1] = '\0'; 270 return value; 271 } 272 #endif /* NO_CONFIG_WRITE */ 273 274 275 static int wpa_config_parse_psk(const struct parse_data *data, 276 struct wpa_ssid *ssid, int line, 277 const char *value) 278 { 279 #ifdef CONFIG_EXT_PASSWORD 280 if (os_strncmp(value, "ext:", 4) == 0) { 281 os_free(ssid->passphrase); 282 ssid->passphrase = NULL; 283 ssid->psk_set = 0; 284 os_free(ssid->ext_psk); 285 ssid->ext_psk = os_strdup(value + 4); 286 if (ssid->ext_psk == NULL) 287 return -1; 288 wpa_printf(MSG_DEBUG, "PSK: External password '%s'", 289 ssid->ext_psk); 290 return 0; 291 } 292 #endif /* CONFIG_EXT_PASSWORD */ 293 294 if (*value == '"') { 295 #ifndef CONFIG_NO_PBKDF2 296 const char *pos; 297 size_t len; 298 299 value++; 300 pos = os_strrchr(value, '"'); 301 if (pos) 302 len = pos - value; 303 else 304 len = os_strlen(value); 305 if (len < 8 || len > 63) { 306 wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase " 307 "length %lu (expected: 8..63) '%s'.", 308 line, (unsigned long) len, value); 309 return -1; 310 } 311 wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)", 312 (u8 *) value, len); 313 if (ssid->passphrase && os_strlen(ssid->passphrase) == len && 314 os_memcmp(ssid->passphrase, value, len) == 0) 315 return 0; 316 ssid->psk_set = 0; 317 os_free(ssid->passphrase); 318 ssid->passphrase = os_malloc(len + 1); 319 if (ssid->passphrase == NULL) 320 return -1; 321 os_memcpy(ssid->passphrase, value, len); 322 ssid->passphrase[len] = '\0'; 323 return 0; 324 #else /* CONFIG_NO_PBKDF2 */ 325 wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not " 326 "supported.", line); 327 return -1; 328 #endif /* CONFIG_NO_PBKDF2 */ 329 } 330 331 if (hexstr2bin(value, ssid->psk, PMK_LEN) || 332 value[PMK_LEN * 2] != '\0') { 333 wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.", 334 line, value); 335 return -1; 336 } 337 338 os_free(ssid->passphrase); 339 ssid->passphrase = NULL; 340 341 ssid->psk_set = 1; 342 wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN); 343 return 0; 344 } 345 346 347 #ifndef NO_CONFIG_WRITE 348 static char * wpa_config_write_psk(const struct parse_data *data, 349 struct wpa_ssid *ssid) 350 { 351 #ifdef CONFIG_EXT_PASSWORD 352 if (ssid->ext_psk) { 353 size_t len = 4 + os_strlen(ssid->ext_psk) + 1; 354 char *buf = os_malloc(len); 355 if (buf == NULL) 356 return NULL; 357 os_snprintf(buf, len, "ext:%s", ssid->ext_psk); 358 return buf; 359 } 360 #endif /* CONFIG_EXT_PASSWORD */ 361 362 if (ssid->passphrase) 363 return wpa_config_write_string_ascii( 364 (const u8 *) ssid->passphrase, 365 os_strlen(ssid->passphrase)); 366 367 if (ssid->psk_set) 368 return wpa_config_write_string_hex(ssid->psk, PMK_LEN); 369 370 return NULL; 371 } 372 #endif /* NO_CONFIG_WRITE */ 373 374 375 static int wpa_config_parse_proto(const struct parse_data *data, 376 struct wpa_ssid *ssid, int line, 377 const char *value) 378 { 379 int val = 0, last, errors = 0; 380 char *start, *end, *buf; 381 382 buf = os_strdup(value); 383 if (buf == NULL) 384 return -1; 385 start = buf; 386 387 while (*start != '\0') { 388 while (*start == ' ' || *start == '\t') 389 start++; 390 if (*start == '\0') 391 break; 392 end = start; 393 while (*end != ' ' && *end != '\t' && *end != '\0') 394 end++; 395 last = *end == '\0'; 396 *end = '\0'; 397 if (os_strcmp(start, "WPA") == 0) 398 val |= WPA_PROTO_WPA; 399 else if (os_strcmp(start, "RSN") == 0 || 400 os_strcmp(start, "WPA2") == 0) 401 val |= WPA_PROTO_RSN; 402 else { 403 wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'", 404 line, start); 405 errors++; 406 } 407 408 if (last) 409 break; 410 start = end + 1; 411 } 412 os_free(buf); 413 414 if (val == 0) { 415 wpa_printf(MSG_ERROR, 416 "Line %d: no proto values configured.", line); 417 errors++; 418 } 419 420 wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val); 421 ssid->proto = val; 422 return errors ? -1 : 0; 423 } 424 425 426 #ifndef NO_CONFIG_WRITE 427 static char * wpa_config_write_proto(const struct parse_data *data, 428 struct wpa_ssid *ssid) 429 { 430 int first = 1, ret; 431 char *buf, *pos, *end; 432 433 pos = buf = os_zalloc(10); 434 if (buf == NULL) 435 return NULL; 436 end = buf + 10; 437 438 if (ssid->proto & WPA_PROTO_WPA) { 439 ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " "); 440 if (ret < 0 || ret >= end - pos) 441 return buf; 442 pos += ret; 443 first = 0; 444 } 445 446 if (ssid->proto & WPA_PROTO_RSN) { 447 ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " "); 448 if (ret < 0 || ret >= end - pos) 449 return buf; 450 pos += ret; 451 first = 0; 452 } 453 454 return buf; 455 } 456 #endif /* NO_CONFIG_WRITE */ 457 458 459 static int wpa_config_parse_key_mgmt(const struct parse_data *data, 460 struct wpa_ssid *ssid, int line, 461 const char *value) 462 { 463 int val = 0, last, errors = 0; 464 char *start, *end, *buf; 465 466 buf = os_strdup(value); 467 if (buf == NULL) 468 return -1; 469 start = buf; 470 471 while (*start != '\0') { 472 while (*start == ' ' || *start == '\t') 473 start++; 474 if (*start == '\0') 475 break; 476 end = start; 477 while (*end != ' ' && *end != '\t' && *end != '\0') 478 end++; 479 last = *end == '\0'; 480 *end = '\0'; 481 if (os_strcmp(start, "WPA-PSK") == 0) 482 val |= WPA_KEY_MGMT_PSK; 483 else if (os_strcmp(start, "WPA-EAP") == 0) 484 val |= WPA_KEY_MGMT_IEEE8021X; 485 else if (os_strcmp(start, "IEEE8021X") == 0) 486 val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA; 487 else if (os_strcmp(start, "NONE") == 0) 488 val |= WPA_KEY_MGMT_NONE; 489 else if (os_strcmp(start, "WPA-NONE") == 0) 490 val |= WPA_KEY_MGMT_WPA_NONE; 491 #ifdef CONFIG_IEEE80211R 492 else if (os_strcmp(start, "FT-PSK") == 0) 493 val |= WPA_KEY_MGMT_FT_PSK; 494 else if (os_strcmp(start, "FT-EAP") == 0) 495 val |= WPA_KEY_MGMT_FT_IEEE8021X; 496 #endif /* CONFIG_IEEE80211R */ 497 #ifdef CONFIG_IEEE80211W 498 else if (os_strcmp(start, "WPA-PSK-SHA256") == 0) 499 val |= WPA_KEY_MGMT_PSK_SHA256; 500 else if (os_strcmp(start, "WPA-EAP-SHA256") == 0) 501 val |= WPA_KEY_MGMT_IEEE8021X_SHA256; 502 #endif /* CONFIG_IEEE80211W */ 503 #ifdef CONFIG_WPS 504 else if (os_strcmp(start, "WPS") == 0) 505 val |= WPA_KEY_MGMT_WPS; 506 #endif /* CONFIG_WPS */ 507 else { 508 wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'", 509 line, start); 510 errors++; 511 } 512 513 if (last) 514 break; 515 start = end + 1; 516 } 517 os_free(buf); 518 519 if (val == 0) { 520 wpa_printf(MSG_ERROR, 521 "Line %d: no key_mgmt values configured.", line); 522 errors++; 523 } 524 525 wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val); 526 ssid->key_mgmt = val; 527 return errors ? -1 : 0; 528 } 529 530 531 #ifndef NO_CONFIG_WRITE 532 static char * wpa_config_write_key_mgmt(const struct parse_data *data, 533 struct wpa_ssid *ssid) 534 { 535 char *buf, *pos, *end; 536 int ret; 537 538 pos = buf = os_zalloc(50); 539 if (buf == NULL) 540 return NULL; 541 end = buf + 50; 542 543 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) { 544 ret = os_snprintf(pos, end - pos, "%sWPA-PSK", 545 pos == buf ? "" : " "); 546 if (ret < 0 || ret >= end - pos) { 547 end[-1] = '\0'; 548 return buf; 549 } 550 pos += ret; 551 } 552 553 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) { 554 ret = os_snprintf(pos, end - pos, "%sWPA-EAP", 555 pos == buf ? "" : " "); 556 if (ret < 0 || ret >= end - pos) { 557 end[-1] = '\0'; 558 return buf; 559 } 560 pos += ret; 561 } 562 563 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 564 ret = os_snprintf(pos, end - pos, "%sIEEE8021X", 565 pos == buf ? "" : " "); 566 if (ret < 0 || ret >= end - pos) { 567 end[-1] = '\0'; 568 return buf; 569 } 570 pos += ret; 571 } 572 573 if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) { 574 ret = os_snprintf(pos, end - pos, "%sNONE", 575 pos == buf ? "" : " "); 576 if (ret < 0 || ret >= end - pos) { 577 end[-1] = '\0'; 578 return buf; 579 } 580 pos += ret; 581 } 582 583 if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) { 584 ret = os_snprintf(pos, end - pos, "%sWPA-NONE", 585 pos == buf ? "" : " "); 586 if (ret < 0 || ret >= end - pos) { 587 end[-1] = '\0'; 588 return buf; 589 } 590 pos += ret; 591 } 592 593 #ifdef CONFIG_IEEE80211R 594 if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) 595 pos += os_snprintf(pos, end - pos, "%sFT-PSK", 596 pos == buf ? "" : " "); 597 598 if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) 599 pos += os_snprintf(pos, end - pos, "%sFT-EAP", 600 pos == buf ? "" : " "); 601 #endif /* CONFIG_IEEE80211R */ 602 603 #ifdef CONFIG_IEEE80211W 604 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) 605 pos += os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256", 606 pos == buf ? "" : " "); 607 608 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) 609 pos += os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256", 610 pos == buf ? "" : " "); 611 #endif /* CONFIG_IEEE80211W */ 612 613 #ifdef CONFIG_WPS 614 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 615 pos += os_snprintf(pos, end - pos, "%sWPS", 616 pos == buf ? "" : " "); 617 #endif /* CONFIG_WPS */ 618 619 return buf; 620 } 621 #endif /* NO_CONFIG_WRITE */ 622 623 624 static int wpa_config_parse_cipher(int line, const char *value) 625 { 626 int val = 0, last; 627 char *start, *end, *buf; 628 629 buf = os_strdup(value); 630 if (buf == NULL) 631 return -1; 632 start = buf; 633 634 while (*start != '\0') { 635 while (*start == ' ' || *start == '\t') 636 start++; 637 if (*start == '\0') 638 break; 639 end = start; 640 while (*end != ' ' && *end != '\t' && *end != '\0') 641 end++; 642 last = *end == '\0'; 643 *end = '\0'; 644 if (os_strcmp(start, "CCMP") == 0) 645 val |= WPA_CIPHER_CCMP; 646 else if (os_strcmp(start, "GCMP") == 0) 647 val |= WPA_CIPHER_GCMP; 648 else if (os_strcmp(start, "TKIP") == 0) 649 val |= WPA_CIPHER_TKIP; 650 else if (os_strcmp(start, "WEP104") == 0) 651 val |= WPA_CIPHER_WEP104; 652 else if (os_strcmp(start, "WEP40") == 0) 653 val |= WPA_CIPHER_WEP40; 654 else if (os_strcmp(start, "NONE") == 0) 655 val |= WPA_CIPHER_NONE; 656 else { 657 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.", 658 line, start); 659 os_free(buf); 660 return -1; 661 } 662 663 if (last) 664 break; 665 start = end + 1; 666 } 667 os_free(buf); 668 669 if (val == 0) { 670 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.", 671 line); 672 return -1; 673 } 674 return val; 675 } 676 677 678 #ifndef NO_CONFIG_WRITE 679 static char * wpa_config_write_cipher(int cipher) 680 { 681 char *buf, *pos, *end; 682 int ret; 683 684 pos = buf = os_zalloc(50); 685 if (buf == NULL) 686 return NULL; 687 end = buf + 50; 688 689 if (cipher & WPA_CIPHER_CCMP) { 690 ret = os_snprintf(pos, end - pos, "%sCCMP", 691 pos == buf ? "" : " "); 692 if (ret < 0 || ret >= end - pos) { 693 end[-1] = '\0'; 694 return buf; 695 } 696 pos += ret; 697 } 698 699 if (cipher & WPA_CIPHER_GCMP) { 700 ret = os_snprintf(pos, end - pos, "%sGCMP", 701 pos == buf ? "" : " "); 702 if (ret < 0 || ret >= end - pos) { 703 end[-1] = '\0'; 704 return buf; 705 } 706 pos += ret; 707 } 708 709 if (cipher & WPA_CIPHER_TKIP) { 710 ret = os_snprintf(pos, end - pos, "%sTKIP", 711 pos == buf ? "" : " "); 712 if (ret < 0 || ret >= end - pos) { 713 end[-1] = '\0'; 714 return buf; 715 } 716 pos += ret; 717 } 718 719 if (cipher & WPA_CIPHER_WEP104) { 720 ret = os_snprintf(pos, end - pos, "%sWEP104", 721 pos == buf ? "" : " "); 722 if (ret < 0 || ret >= end - pos) { 723 end[-1] = '\0'; 724 return buf; 725 } 726 pos += ret; 727 } 728 729 if (cipher & WPA_CIPHER_WEP40) { 730 ret = os_snprintf(pos, end - pos, "%sWEP40", 731 pos == buf ? "" : " "); 732 if (ret < 0 || ret >= end - pos) { 733 end[-1] = '\0'; 734 return buf; 735 } 736 pos += ret; 737 } 738 739 if (cipher & WPA_CIPHER_NONE) { 740 ret = os_snprintf(pos, end - pos, "%sNONE", 741 pos == buf ? "" : " "); 742 if (ret < 0 || ret >= end - pos) { 743 end[-1] = '\0'; 744 return buf; 745 } 746 pos += ret; 747 } 748 749 return buf; 750 } 751 #endif /* NO_CONFIG_WRITE */ 752 753 754 static int wpa_config_parse_pairwise(const struct parse_data *data, 755 struct wpa_ssid *ssid, int line, 756 const char *value) 757 { 758 int val; 759 val = wpa_config_parse_cipher(line, value); 760 if (val == -1) 761 return -1; 762 if (val & ~(WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | WPA_CIPHER_TKIP | 763 WPA_CIPHER_NONE)) { 764 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher " 765 "(0x%x).", line, val); 766 return -1; 767 } 768 769 wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val); 770 ssid->pairwise_cipher = val; 771 return 0; 772 } 773 774 775 #ifndef NO_CONFIG_WRITE 776 static char * wpa_config_write_pairwise(const struct parse_data *data, 777 struct wpa_ssid *ssid) 778 { 779 return wpa_config_write_cipher(ssid->pairwise_cipher); 780 } 781 #endif /* NO_CONFIG_WRITE */ 782 783 784 static int wpa_config_parse_group(const struct parse_data *data, 785 struct wpa_ssid *ssid, int line, 786 const char *value) 787 { 788 int val; 789 val = wpa_config_parse_cipher(line, value); 790 if (val == -1) 791 return -1; 792 if (val & ~(WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | WPA_CIPHER_TKIP | 793 WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) { 794 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher " 795 "(0x%x).", line, val); 796 return -1; 797 } 798 799 wpa_printf(MSG_MSGDUMP, "group: 0x%x", val); 800 ssid->group_cipher = val; 801 return 0; 802 } 803 804 805 #ifndef NO_CONFIG_WRITE 806 static char * wpa_config_write_group(const struct parse_data *data, 807 struct wpa_ssid *ssid) 808 { 809 return wpa_config_write_cipher(ssid->group_cipher); 810 } 811 #endif /* NO_CONFIG_WRITE */ 812 813 814 static int wpa_config_parse_auth_alg(const struct parse_data *data, 815 struct wpa_ssid *ssid, int line, 816 const char *value) 817 { 818 int val = 0, last, errors = 0; 819 char *start, *end, *buf; 820 821 buf = os_strdup(value); 822 if (buf == NULL) 823 return -1; 824 start = buf; 825 826 while (*start != '\0') { 827 while (*start == ' ' || *start == '\t') 828 start++; 829 if (*start == '\0') 830 break; 831 end = start; 832 while (*end != ' ' && *end != '\t' && *end != '\0') 833 end++; 834 last = *end == '\0'; 835 *end = '\0'; 836 if (os_strcmp(start, "OPEN") == 0) 837 val |= WPA_AUTH_ALG_OPEN; 838 else if (os_strcmp(start, "SHARED") == 0) 839 val |= WPA_AUTH_ALG_SHARED; 840 else if (os_strcmp(start, "LEAP") == 0) 841 val |= WPA_AUTH_ALG_LEAP; 842 else { 843 wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'", 844 line, start); 845 errors++; 846 } 847 848 if (last) 849 break; 850 start = end + 1; 851 } 852 os_free(buf); 853 854 if (val == 0) { 855 wpa_printf(MSG_ERROR, 856 "Line %d: no auth_alg values configured.", line); 857 errors++; 858 } 859 860 wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val); 861 ssid->auth_alg = val; 862 return errors ? -1 : 0; 863 } 864 865 866 #ifndef NO_CONFIG_WRITE 867 static char * wpa_config_write_auth_alg(const struct parse_data *data, 868 struct wpa_ssid *ssid) 869 { 870 char *buf, *pos, *end; 871 int ret; 872 873 pos = buf = os_zalloc(30); 874 if (buf == NULL) 875 return NULL; 876 end = buf + 30; 877 878 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) { 879 ret = os_snprintf(pos, end - pos, "%sOPEN", 880 pos == buf ? "" : " "); 881 if (ret < 0 || ret >= end - pos) { 882 end[-1] = '\0'; 883 return buf; 884 } 885 pos += ret; 886 } 887 888 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) { 889 ret = os_snprintf(pos, end - pos, "%sSHARED", 890 pos == buf ? "" : " "); 891 if (ret < 0 || ret >= end - pos) { 892 end[-1] = '\0'; 893 return buf; 894 } 895 pos += ret; 896 } 897 898 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) { 899 ret = os_snprintf(pos, end - pos, "%sLEAP", 900 pos == buf ? "" : " "); 901 if (ret < 0 || ret >= end - pos) { 902 end[-1] = '\0'; 903 return buf; 904 } 905 pos += ret; 906 } 907 908 return buf; 909 } 910 #endif /* NO_CONFIG_WRITE */ 911 912 913 static int * wpa_config_parse_freqs(const struct parse_data *data, 914 struct wpa_ssid *ssid, int line, 915 const char *value) 916 { 917 int *freqs; 918 size_t used, len; 919 const char *pos; 920 921 used = 0; 922 len = 10; 923 freqs = os_calloc(len + 1, sizeof(int)); 924 if (freqs == NULL) 925 return NULL; 926 927 pos = value; 928 while (pos) { 929 while (*pos == ' ') 930 pos++; 931 if (used == len) { 932 int *n; 933 size_t i; 934 n = os_realloc_array(freqs, len * 2 + 1, sizeof(int)); 935 if (n == NULL) { 936 os_free(freqs); 937 return NULL; 938 } 939 for (i = len; i <= len * 2; i++) 940 n[i] = 0; 941 freqs = n; 942 len *= 2; 943 } 944 945 freqs[used] = atoi(pos); 946 if (freqs[used] == 0) 947 break; 948 used++; 949 pos = os_strchr(pos + 1, ' '); 950 } 951 952 return freqs; 953 } 954 955 956 static int wpa_config_parse_scan_freq(const struct parse_data *data, 957 struct wpa_ssid *ssid, int line, 958 const char *value) 959 { 960 int *freqs; 961 962 freqs = wpa_config_parse_freqs(data, ssid, line, value); 963 if (freqs == NULL) 964 return -1; 965 os_free(ssid->scan_freq); 966 ssid->scan_freq = freqs; 967 968 return 0; 969 } 970 971 972 static int wpa_config_parse_freq_list(const struct parse_data *data, 973 struct wpa_ssid *ssid, int line, 974 const char *value) 975 { 976 int *freqs; 977 978 freqs = wpa_config_parse_freqs(data, ssid, line, value); 979 if (freqs == NULL) 980 return -1; 981 os_free(ssid->freq_list); 982 ssid->freq_list = freqs; 983 984 return 0; 985 } 986 987 988 #ifndef NO_CONFIG_WRITE 989 static char * wpa_config_write_freqs(const struct parse_data *data, 990 const int *freqs) 991 { 992 char *buf, *pos, *end; 993 int i, ret; 994 size_t count; 995 996 if (freqs == NULL) 997 return NULL; 998 999 count = 0; 1000 for (i = 0; freqs[i]; i++) 1001 count++; 1002 1003 pos = buf = os_zalloc(10 * count + 1); 1004 if (buf == NULL) 1005 return NULL; 1006 end = buf + 10 * count + 1; 1007 1008 for (i = 0; freqs[i]; i++) { 1009 ret = os_snprintf(pos, end - pos, "%s%u", 1010 i == 0 ? "" : " ", freqs[i]); 1011 if (ret < 0 || ret >= end - pos) { 1012 end[-1] = '\0'; 1013 return buf; 1014 } 1015 pos += ret; 1016 } 1017 1018 return buf; 1019 } 1020 1021 1022 static char * wpa_config_write_scan_freq(const struct parse_data *data, 1023 struct wpa_ssid *ssid) 1024 { 1025 return wpa_config_write_freqs(data, ssid->scan_freq); 1026 } 1027 1028 1029 static char * wpa_config_write_freq_list(const struct parse_data *data, 1030 struct wpa_ssid *ssid) 1031 { 1032 return wpa_config_write_freqs(data, ssid->freq_list); 1033 } 1034 #endif /* NO_CONFIG_WRITE */ 1035 1036 1037 #ifdef IEEE8021X_EAPOL 1038 static int wpa_config_parse_eap(const struct parse_data *data, 1039 struct wpa_ssid *ssid, int line, 1040 const char *value) 1041 { 1042 int last, errors = 0; 1043 char *start, *end, *buf; 1044 struct eap_method_type *methods = NULL, *tmp; 1045 size_t num_methods = 0; 1046 1047 buf = os_strdup(value); 1048 if (buf == NULL) 1049 return -1; 1050 start = buf; 1051 1052 while (*start != '\0') { 1053 while (*start == ' ' || *start == '\t') 1054 start++; 1055 if (*start == '\0') 1056 break; 1057 end = start; 1058 while (*end != ' ' && *end != '\t' && *end != '\0') 1059 end++; 1060 last = *end == '\0'; 1061 *end = '\0'; 1062 tmp = methods; 1063 methods = os_realloc_array(methods, num_methods + 1, 1064 sizeof(*methods)); 1065 if (methods == NULL) { 1066 os_free(tmp); 1067 os_free(buf); 1068 return -1; 1069 } 1070 methods[num_methods].method = eap_peer_get_type( 1071 start, &methods[num_methods].vendor); 1072 if (methods[num_methods].vendor == EAP_VENDOR_IETF && 1073 methods[num_methods].method == EAP_TYPE_NONE) { 1074 wpa_printf(MSG_ERROR, "Line %d: unknown EAP method " 1075 "'%s'", line, start); 1076 wpa_printf(MSG_ERROR, "You may need to add support for" 1077 " this EAP method during wpa_supplicant\n" 1078 "build time configuration.\n" 1079 "See README for more information."); 1080 errors++; 1081 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF && 1082 methods[num_methods].method == EAP_TYPE_LEAP) 1083 ssid->leap++; 1084 else 1085 ssid->non_leap++; 1086 num_methods++; 1087 if (last) 1088 break; 1089 start = end + 1; 1090 } 1091 os_free(buf); 1092 1093 tmp = methods; 1094 methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods)); 1095 if (methods == NULL) { 1096 os_free(tmp); 1097 return -1; 1098 } 1099 methods[num_methods].vendor = EAP_VENDOR_IETF; 1100 methods[num_methods].method = EAP_TYPE_NONE; 1101 num_methods++; 1102 1103 wpa_hexdump(MSG_MSGDUMP, "eap methods", 1104 (u8 *) methods, num_methods * sizeof(*methods)); 1105 os_free(ssid->eap.eap_methods); 1106 ssid->eap.eap_methods = methods; 1107 return errors ? -1 : 0; 1108 } 1109 1110 1111 static char * wpa_config_write_eap(const struct parse_data *data, 1112 struct wpa_ssid *ssid) 1113 { 1114 int i, ret; 1115 char *buf, *pos, *end; 1116 const struct eap_method_type *eap_methods = ssid->eap.eap_methods; 1117 const char *name; 1118 1119 if (eap_methods == NULL) 1120 return NULL; 1121 1122 pos = buf = os_zalloc(100); 1123 if (buf == NULL) 1124 return NULL; 1125 end = buf + 100; 1126 1127 for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF || 1128 eap_methods[i].method != EAP_TYPE_NONE; i++) { 1129 name = eap_get_name(eap_methods[i].vendor, 1130 eap_methods[i].method); 1131 if (name) { 1132 ret = os_snprintf(pos, end - pos, "%s%s", 1133 pos == buf ? "" : " ", name); 1134 if (ret < 0 || ret >= end - pos) 1135 break; 1136 pos += ret; 1137 } 1138 } 1139 1140 end[-1] = '\0'; 1141 1142 return buf; 1143 } 1144 1145 1146 static int wpa_config_parse_password(const struct parse_data *data, 1147 struct wpa_ssid *ssid, int line, 1148 const char *value) 1149 { 1150 u8 *hash; 1151 1152 if (os_strcmp(value, "NULL") == 0) { 1153 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'"); 1154 os_free(ssid->eap.password); 1155 ssid->eap.password = NULL; 1156 ssid->eap.password_len = 0; 1157 return 0; 1158 } 1159 1160 #ifdef CONFIG_EXT_PASSWORD 1161 if (os_strncmp(value, "ext:", 4) == 0) { 1162 char *name = os_strdup(value + 4); 1163 if (name == NULL) 1164 return -1; 1165 os_free(ssid->eap.password); 1166 ssid->eap.password = (u8 *) name; 1167 ssid->eap.password_len = os_strlen(name); 1168 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH; 1169 ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD; 1170 return 0; 1171 } 1172 #endif /* CONFIG_EXT_PASSWORD */ 1173 1174 if (os_strncmp(value, "hash:", 5) != 0) { 1175 char *tmp; 1176 size_t res_len; 1177 1178 tmp = wpa_config_parse_string(value, &res_len); 1179 if (tmp == NULL) { 1180 wpa_printf(MSG_ERROR, "Line %d: failed to parse " 1181 "password.", line); 1182 return -1; 1183 } 1184 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name, 1185 (u8 *) tmp, res_len); 1186 1187 os_free(ssid->eap.password); 1188 ssid->eap.password = (u8 *) tmp; 1189 ssid->eap.password_len = res_len; 1190 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH; 1191 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD; 1192 1193 return 0; 1194 } 1195 1196 1197 /* NtPasswordHash: hash:<32 hex digits> */ 1198 if (os_strlen(value + 5) != 2 * 16) { 1199 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length " 1200 "(expected 32 hex digits)", line); 1201 return -1; 1202 } 1203 1204 hash = os_malloc(16); 1205 if (hash == NULL) 1206 return -1; 1207 1208 if (hexstr2bin(value + 5, hash, 16)) { 1209 os_free(hash); 1210 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line); 1211 return -1; 1212 } 1213 1214 wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16); 1215 1216 os_free(ssid->eap.password); 1217 ssid->eap.password = hash; 1218 ssid->eap.password_len = 16; 1219 ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH; 1220 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD; 1221 1222 return 0; 1223 } 1224 1225 1226 static char * wpa_config_write_password(const struct parse_data *data, 1227 struct wpa_ssid *ssid) 1228 { 1229 char *buf; 1230 1231 if (ssid->eap.password == NULL) 1232 return NULL; 1233 1234 #ifdef CONFIG_EXT_PASSWORD 1235 if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) { 1236 buf = os_zalloc(4 + ssid->eap.password_len + 1); 1237 if (buf == NULL) 1238 return NULL; 1239 os_memcpy(buf, "ext:", 4); 1240 os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len); 1241 return buf; 1242 } 1243 #endif /* CONFIG_EXT_PASSWORD */ 1244 1245 if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) { 1246 return wpa_config_write_string( 1247 ssid->eap.password, ssid->eap.password_len); 1248 } 1249 1250 buf = os_malloc(5 + 32 + 1); 1251 if (buf == NULL) 1252 return NULL; 1253 1254 os_memcpy(buf, "hash:", 5); 1255 wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16); 1256 1257 return buf; 1258 } 1259 #endif /* IEEE8021X_EAPOL */ 1260 1261 1262 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line, 1263 const char *value, int idx) 1264 { 1265 char *buf, title[20]; 1266 int res; 1267 1268 buf = wpa_config_parse_string(value, len); 1269 if (buf == NULL) { 1270 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.", 1271 line, idx, value); 1272 return -1; 1273 } 1274 if (*len > MAX_WEP_KEY_LEN) { 1275 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.", 1276 line, idx, value); 1277 os_free(buf); 1278 return -1; 1279 } 1280 if (*len && *len != 5 && *len != 13 && *len != 16) { 1281 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - " 1282 "this network block will be ignored", 1283 line, (unsigned int) *len); 1284 } 1285 os_memcpy(key, buf, *len); 1286 os_free(buf); 1287 res = os_snprintf(title, sizeof(title), "wep_key%d", idx); 1288 if (res >= 0 && (size_t) res < sizeof(title)) 1289 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len); 1290 return 0; 1291 } 1292 1293 1294 static int wpa_config_parse_wep_key0(const struct parse_data *data, 1295 struct wpa_ssid *ssid, int line, 1296 const char *value) 1297 { 1298 return wpa_config_parse_wep_key(ssid->wep_key[0], 1299 &ssid->wep_key_len[0], line, 1300 value, 0); 1301 } 1302 1303 1304 static int wpa_config_parse_wep_key1(const struct parse_data *data, 1305 struct wpa_ssid *ssid, int line, 1306 const char *value) 1307 { 1308 return wpa_config_parse_wep_key(ssid->wep_key[1], 1309 &ssid->wep_key_len[1], line, 1310 value, 1); 1311 } 1312 1313 1314 static int wpa_config_parse_wep_key2(const struct parse_data *data, 1315 struct wpa_ssid *ssid, int line, 1316 const char *value) 1317 { 1318 return wpa_config_parse_wep_key(ssid->wep_key[2], 1319 &ssid->wep_key_len[2], line, 1320 value, 2); 1321 } 1322 1323 1324 static int wpa_config_parse_wep_key3(const struct parse_data *data, 1325 struct wpa_ssid *ssid, int line, 1326 const char *value) 1327 { 1328 return wpa_config_parse_wep_key(ssid->wep_key[3], 1329 &ssid->wep_key_len[3], line, 1330 value, 3); 1331 } 1332 1333 1334 #ifndef NO_CONFIG_WRITE 1335 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx) 1336 { 1337 if (ssid->wep_key_len[idx] == 0) 1338 return NULL; 1339 return wpa_config_write_string(ssid->wep_key[idx], 1340 ssid->wep_key_len[idx]); 1341 } 1342 1343 1344 static char * wpa_config_write_wep_key0(const struct parse_data *data, 1345 struct wpa_ssid *ssid) 1346 { 1347 return wpa_config_write_wep_key(ssid, 0); 1348 } 1349 1350 1351 static char * wpa_config_write_wep_key1(const struct parse_data *data, 1352 struct wpa_ssid *ssid) 1353 { 1354 return wpa_config_write_wep_key(ssid, 1); 1355 } 1356 1357 1358 static char * wpa_config_write_wep_key2(const struct parse_data *data, 1359 struct wpa_ssid *ssid) 1360 { 1361 return wpa_config_write_wep_key(ssid, 2); 1362 } 1363 1364 1365 static char * wpa_config_write_wep_key3(const struct parse_data *data, 1366 struct wpa_ssid *ssid) 1367 { 1368 return wpa_config_write_wep_key(ssid, 3); 1369 } 1370 #endif /* NO_CONFIG_WRITE */ 1371 1372 1373 #ifdef CONFIG_P2P 1374 1375 static int wpa_config_parse_p2p_client_list(const struct parse_data *data, 1376 struct wpa_ssid *ssid, int line, 1377 const char *value) 1378 { 1379 const char *pos; 1380 u8 *buf, *n, addr[ETH_ALEN]; 1381 size_t count; 1382 1383 buf = NULL; 1384 count = 0; 1385 1386 pos = value; 1387 while (pos && *pos) { 1388 while (*pos == ' ') 1389 pos++; 1390 1391 if (hwaddr_aton(pos, addr)) { 1392 if (count == 0) { 1393 wpa_printf(MSG_ERROR, "Line %d: Invalid " 1394 "p2p_client_list address '%s'.", 1395 line, value); 1396 os_free(buf); 1397 return -1; 1398 } 1399 /* continue anyway since this could have been from a 1400 * truncated configuration file line */ 1401 wpa_printf(MSG_INFO, "Line %d: Ignore likely " 1402 "truncated p2p_client_list address '%s'", 1403 line, pos); 1404 } else { 1405 n = os_realloc_array(buf, count + 1, ETH_ALEN); 1406 if (n == NULL) { 1407 os_free(buf); 1408 return -1; 1409 } 1410 buf = n; 1411 os_memmove(buf + ETH_ALEN, buf, count * ETH_ALEN); 1412 os_memcpy(buf, addr, ETH_ALEN); 1413 count++; 1414 wpa_hexdump(MSG_MSGDUMP, "p2p_client_list", 1415 addr, ETH_ALEN); 1416 } 1417 1418 pos = os_strchr(pos, ' '); 1419 } 1420 1421 os_free(ssid->p2p_client_list); 1422 ssid->p2p_client_list = buf; 1423 ssid->num_p2p_clients = count; 1424 1425 return 0; 1426 } 1427 1428 1429 #ifndef NO_CONFIG_WRITE 1430 static char * wpa_config_write_p2p_client_list(const struct parse_data *data, 1431 struct wpa_ssid *ssid) 1432 { 1433 char *value, *end, *pos; 1434 int res; 1435 size_t i; 1436 1437 if (ssid->p2p_client_list == NULL || ssid->num_p2p_clients == 0) 1438 return NULL; 1439 1440 value = os_malloc(20 * ssid->num_p2p_clients); 1441 if (value == NULL) 1442 return NULL; 1443 pos = value; 1444 end = value + 20 * ssid->num_p2p_clients; 1445 1446 for (i = ssid->num_p2p_clients; i > 0; i--) { 1447 res = os_snprintf(pos, end - pos, MACSTR " ", 1448 MAC2STR(ssid->p2p_client_list + 1449 (i - 1) * ETH_ALEN)); 1450 if (res < 0 || res >= end - pos) { 1451 os_free(value); 1452 return NULL; 1453 } 1454 pos += res; 1455 } 1456 1457 if (pos > value) 1458 pos[-1] = '\0'; 1459 1460 return value; 1461 } 1462 #endif /* NO_CONFIG_WRITE */ 1463 1464 #endif /* CONFIG_P2P */ 1465 1466 /* Helper macros for network block parser */ 1467 1468 #ifdef OFFSET 1469 #undef OFFSET 1470 #endif /* OFFSET */ 1471 /* OFFSET: Get offset of a variable within the wpa_ssid structure */ 1472 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v) 1473 1474 /* STR: Define a string variable for an ASCII string; f = field name */ 1475 #ifdef NO_CONFIG_WRITE 1476 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f) 1477 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f) 1478 #else /* NO_CONFIG_WRITE */ 1479 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f) 1480 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f) 1481 #endif /* NO_CONFIG_WRITE */ 1482 #define STR(f) _STR(f), NULL, NULL, NULL, 0 1483 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0 1484 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1 1485 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1 1486 1487 /* STR_LEN: Define a string variable with a separate variable for storing the 1488 * data length. Unlike STR(), this can be used to store arbitrary binary data 1489 * (i.e., even nul termination character). */ 1490 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len) 1491 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len) 1492 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0 1493 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0 1494 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1 1495 1496 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length 1497 * explicitly specified. */ 1498 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max) 1499 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0 1500 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1 1501 1502 #ifdef NO_CONFIG_WRITE 1503 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0 1504 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0 1505 #else /* NO_CONFIG_WRITE */ 1506 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \ 1507 OFFSET(f), (void *) 0 1508 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \ 1509 OFFSET(eap.f), (void *) 0 1510 #endif /* NO_CONFIG_WRITE */ 1511 1512 /* INT: Define an integer variable */ 1513 #define INT(f) _INT(f), NULL, NULL, 0 1514 #define INTe(f) _INTe(f), NULL, NULL, 0 1515 1516 /* INT_RANGE: Define an integer variable with allowed value range */ 1517 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0 1518 1519 /* FUNC: Define a configuration variable that uses a custom function for 1520 * parsing and writing the value. */ 1521 #ifdef NO_CONFIG_WRITE 1522 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL 1523 #else /* NO_CONFIG_WRITE */ 1524 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \ 1525 NULL, NULL, NULL, NULL 1526 #endif /* NO_CONFIG_WRITE */ 1527 #define FUNC(f) _FUNC(f), 0 1528 #define FUNC_KEY(f) _FUNC(f), 1 1529 1530 /* 1531 * Table of network configuration variables. This table is used to parse each 1532 * network configuration variable, e.g., each line in wpa_supplicant.conf file 1533 * that is inside a network block. 1534 * 1535 * This table is generated using the helper macros defined above and with 1536 * generous help from the C pre-processor. The field name is stored as a string 1537 * into .name and for STR and INT types, the offset of the target buffer within 1538 * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar 1539 * offset to the field containing the length of the configuration variable. 1540 * .param3 and .param4 can be used to mark the allowed range (length for STR 1541 * and value for INT). 1542 * 1543 * For each configuration line in wpa_supplicant.conf, the parser goes through 1544 * this table and select the entry that matches with the field name. The parser 1545 * function (.parser) is then called to parse the actual value of the field. 1546 * 1547 * This kind of mechanism makes it easy to add new configuration parameters, 1548 * since only one line needs to be added into this table and into the 1549 * struct wpa_ssid definition if the new variable is either a string or 1550 * integer. More complex types will need to use their own parser and writer 1551 * functions. 1552 */ 1553 static const struct parse_data ssid_fields[] = { 1554 { STR_RANGE(ssid, 0, MAX_SSID_LEN) }, 1555 { INT_RANGE(scan_ssid, 0, 1) }, 1556 { FUNC(bssid) }, 1557 { FUNC_KEY(psk) }, 1558 { FUNC(proto) }, 1559 { FUNC(key_mgmt) }, 1560 { INT(bg_scan_period) }, 1561 { FUNC(pairwise) }, 1562 { FUNC(group) }, 1563 { FUNC(auth_alg) }, 1564 { FUNC(scan_freq) }, 1565 { FUNC(freq_list) }, 1566 #ifdef IEEE8021X_EAPOL 1567 { FUNC(eap) }, 1568 { STR_LENe(identity) }, 1569 { STR_LENe(anonymous_identity) }, 1570 { FUNC_KEY(password) }, 1571 { STRe(ca_cert) }, 1572 { STRe(ca_path) }, 1573 { STRe(client_cert) }, 1574 { STRe(private_key) }, 1575 { STR_KEYe(private_key_passwd) }, 1576 { STRe(dh_file) }, 1577 { STRe(subject_match) }, 1578 { STRe(altsubject_match) }, 1579 { STRe(ca_cert2) }, 1580 { STRe(ca_path2) }, 1581 { STRe(client_cert2) }, 1582 { STRe(private_key2) }, 1583 { STR_KEYe(private_key2_passwd) }, 1584 { STRe(dh_file2) }, 1585 { STRe(subject_match2) }, 1586 { STRe(altsubject_match2) }, 1587 { STRe(phase1) }, 1588 { STRe(phase2) }, 1589 { STRe(pcsc) }, 1590 { STR_KEYe(pin) }, 1591 { STRe(engine_id) }, 1592 { STRe(key_id) }, 1593 { STRe(cert_id) }, 1594 { STRe(ca_cert_id) }, 1595 { STR_KEYe(pin2) }, 1596 { STRe(engine2_id) }, 1597 { STRe(key2_id) }, 1598 { STRe(cert2_id) }, 1599 { STRe(ca_cert2_id) }, 1600 { INTe(engine) }, 1601 { INTe(engine2) }, 1602 { INT(eapol_flags) }, 1603 #endif /* IEEE8021X_EAPOL */ 1604 { FUNC_KEY(wep_key0) }, 1605 { FUNC_KEY(wep_key1) }, 1606 { FUNC_KEY(wep_key2) }, 1607 { FUNC_KEY(wep_key3) }, 1608 { INT(wep_tx_keyidx) }, 1609 { INT(priority) }, 1610 #ifdef IEEE8021X_EAPOL 1611 { INT(eap_workaround) }, 1612 { STRe(pac_file) }, 1613 { INTe(fragment_size) }, 1614 #endif /* IEEE8021X_EAPOL */ 1615 { INT_RANGE(mode, 0, 4) }, 1616 { INT_RANGE(proactive_key_caching, 0, 1) }, 1617 { INT_RANGE(disabled, 0, 2) }, 1618 { STR(id_str) }, 1619 #ifdef CONFIG_IEEE80211W 1620 { INT_RANGE(ieee80211w, 0, 2) }, 1621 #endif /* CONFIG_IEEE80211W */ 1622 { INT_RANGE(peerkey, 0, 1) }, 1623 { INT_RANGE(mixed_cell, 0, 1) }, 1624 { INT_RANGE(frequency, 0, 10000) }, 1625 { INT(wpa_ptk_rekey) }, 1626 { STR(bgscan) }, 1627 { INT_RANGE(ignore_broadcast_ssid, 0, 2) }, 1628 #ifdef CONFIG_P2P 1629 { FUNC(p2p_client_list) }, 1630 #endif /* CONFIG_P2P */ 1631 #ifdef CONFIG_HT_OVERRIDES 1632 { INT_RANGE(disable_ht, 0, 1) }, 1633 { INT_RANGE(disable_ht40, -1, 1) }, 1634 { INT_RANGE(disable_max_amsdu, -1, 1) }, 1635 { INT_RANGE(ampdu_factor, -1, 3) }, 1636 { INT_RANGE(ampdu_density, -1, 7) }, 1637 { STR(ht_mcs) }, 1638 #endif /* CONFIG_HT_OVERRIDES */ 1639 { INT(ap_max_inactivity) }, 1640 { INT(dtim_period) }, 1641 }; 1642 1643 #undef OFFSET 1644 #undef _STR 1645 #undef STR 1646 #undef STR_KEY 1647 #undef _STR_LEN 1648 #undef STR_LEN 1649 #undef STR_LEN_KEY 1650 #undef _STR_RANGE 1651 #undef STR_RANGE 1652 #undef STR_RANGE_KEY 1653 #undef _INT 1654 #undef INT 1655 #undef INT_RANGE 1656 #undef _FUNC 1657 #undef FUNC 1658 #undef FUNC_KEY 1659 #define NUM_SSID_FIELDS (sizeof(ssid_fields) / sizeof(ssid_fields[0])) 1660 1661 1662 /** 1663 * wpa_config_add_prio_network - Add a network to priority lists 1664 * @config: Configuration data from wpa_config_read() 1665 * @ssid: Pointer to the network configuration to be added to the list 1666 * Returns: 0 on success, -1 on failure 1667 * 1668 * This function is used to add a network block to the priority list of 1669 * networks. This must be called for each network when reading in the full 1670 * configuration. In addition, this can be used indirectly when updating 1671 * priorities by calling wpa_config_update_prio_list(). 1672 */ 1673 int wpa_config_add_prio_network(struct wpa_config *config, 1674 struct wpa_ssid *ssid) 1675 { 1676 int prio; 1677 struct wpa_ssid *prev, **nlist; 1678 1679 /* 1680 * Add to an existing priority list if one is available for the 1681 * configured priority level for this network. 1682 */ 1683 for (prio = 0; prio < config->num_prio; prio++) { 1684 prev = config->pssid[prio]; 1685 if (prev->priority == ssid->priority) { 1686 while (prev->pnext) 1687 prev = prev->pnext; 1688 prev->pnext = ssid; 1689 return 0; 1690 } 1691 } 1692 1693 /* First network for this priority - add a new priority list */ 1694 nlist = os_realloc_array(config->pssid, config->num_prio + 1, 1695 sizeof(struct wpa_ssid *)); 1696 if (nlist == NULL) 1697 return -1; 1698 1699 for (prio = 0; prio < config->num_prio; prio++) { 1700 if (nlist[prio]->priority < ssid->priority) { 1701 os_memmove(&nlist[prio + 1], &nlist[prio], 1702 (config->num_prio - prio) * 1703 sizeof(struct wpa_ssid *)); 1704 break; 1705 } 1706 } 1707 1708 nlist[prio] = ssid; 1709 config->num_prio++; 1710 config->pssid = nlist; 1711 1712 return 0; 1713 } 1714 1715 1716 /** 1717 * wpa_config_update_prio_list - Update network priority list 1718 * @config: Configuration data from wpa_config_read() 1719 * Returns: 0 on success, -1 on failure 1720 * 1721 * This function is called to update the priority list of networks in the 1722 * configuration when a network is being added or removed. This is also called 1723 * if a priority for a network is changed. 1724 */ 1725 int wpa_config_update_prio_list(struct wpa_config *config) 1726 { 1727 struct wpa_ssid *ssid; 1728 int ret = 0; 1729 1730 os_free(config->pssid); 1731 config->pssid = NULL; 1732 config->num_prio = 0; 1733 1734 ssid = config->ssid; 1735 while (ssid) { 1736 ssid->pnext = NULL; 1737 if (wpa_config_add_prio_network(config, ssid) < 0) 1738 ret = -1; 1739 ssid = ssid->next; 1740 } 1741 1742 return ret; 1743 } 1744 1745 1746 #ifdef IEEE8021X_EAPOL 1747 static void eap_peer_config_free(struct eap_peer_config *eap) 1748 { 1749 os_free(eap->eap_methods); 1750 os_free(eap->identity); 1751 os_free(eap->anonymous_identity); 1752 os_free(eap->password); 1753 os_free(eap->ca_cert); 1754 os_free(eap->ca_path); 1755 os_free(eap->client_cert); 1756 os_free(eap->private_key); 1757 os_free(eap->private_key_passwd); 1758 os_free(eap->dh_file); 1759 os_free(eap->subject_match); 1760 os_free(eap->altsubject_match); 1761 os_free(eap->ca_cert2); 1762 os_free(eap->ca_path2); 1763 os_free(eap->client_cert2); 1764 os_free(eap->private_key2); 1765 os_free(eap->private_key2_passwd); 1766 os_free(eap->dh_file2); 1767 os_free(eap->subject_match2); 1768 os_free(eap->altsubject_match2); 1769 os_free(eap->phase1); 1770 os_free(eap->phase2); 1771 os_free(eap->pcsc); 1772 os_free(eap->pin); 1773 os_free(eap->engine_id); 1774 os_free(eap->key_id); 1775 os_free(eap->cert_id); 1776 os_free(eap->ca_cert_id); 1777 os_free(eap->key2_id); 1778 os_free(eap->cert2_id); 1779 os_free(eap->ca_cert2_id); 1780 os_free(eap->pin2); 1781 os_free(eap->engine2_id); 1782 os_free(eap->otp); 1783 os_free(eap->pending_req_otp); 1784 os_free(eap->pac_file); 1785 os_free(eap->new_password); 1786 } 1787 #endif /* IEEE8021X_EAPOL */ 1788 1789 1790 /** 1791 * wpa_config_free_ssid - Free network/ssid configuration data 1792 * @ssid: Configuration data for the network 1793 * 1794 * This function frees all resources allocated for the network configuration 1795 * data. 1796 */ 1797 void wpa_config_free_ssid(struct wpa_ssid *ssid) 1798 { 1799 os_free(ssid->ssid); 1800 os_free(ssid->passphrase); 1801 os_free(ssid->ext_psk); 1802 #ifdef IEEE8021X_EAPOL 1803 eap_peer_config_free(&ssid->eap); 1804 #endif /* IEEE8021X_EAPOL */ 1805 os_free(ssid->id_str); 1806 os_free(ssid->scan_freq); 1807 os_free(ssid->freq_list); 1808 os_free(ssid->bgscan); 1809 os_free(ssid->p2p_client_list); 1810 #ifdef CONFIG_HT_OVERRIDES 1811 os_free(ssid->ht_mcs); 1812 #endif /* CONFIG_HT_OVERRIDES */ 1813 os_free(ssid); 1814 } 1815 1816 1817 void wpa_config_free_cred(struct wpa_cred *cred) 1818 { 1819 os_free(cred->realm); 1820 os_free(cred->username); 1821 os_free(cred->password); 1822 os_free(cred->ca_cert); 1823 os_free(cred->client_cert); 1824 os_free(cred->private_key); 1825 os_free(cred->private_key_passwd); 1826 os_free(cred->imsi); 1827 os_free(cred->milenage); 1828 os_free(cred->domain); 1829 os_free(cred->eap_method); 1830 os_free(cred->phase1); 1831 os_free(cred->phase2); 1832 os_free(cred); 1833 } 1834 1835 1836 /** 1837 * wpa_config_free - Free configuration data 1838 * @config: Configuration data from wpa_config_read() 1839 * 1840 * This function frees all resources allocated for the configuration data by 1841 * wpa_config_read(). 1842 */ 1843 void wpa_config_free(struct wpa_config *config) 1844 { 1845 #ifndef CONFIG_NO_CONFIG_BLOBS 1846 struct wpa_config_blob *blob, *prevblob; 1847 #endif /* CONFIG_NO_CONFIG_BLOBS */ 1848 struct wpa_ssid *ssid, *prev = NULL; 1849 struct wpa_cred *cred, *cprev; 1850 1851 ssid = config->ssid; 1852 while (ssid) { 1853 prev = ssid; 1854 ssid = ssid->next; 1855 wpa_config_free_ssid(prev); 1856 } 1857 1858 cred = config->cred; 1859 while (cred) { 1860 cprev = cred; 1861 cred = cred->next; 1862 wpa_config_free_cred(cprev); 1863 } 1864 1865 #ifndef CONFIG_NO_CONFIG_BLOBS 1866 blob = config->blobs; 1867 prevblob = NULL; 1868 while (blob) { 1869 prevblob = blob; 1870 blob = blob->next; 1871 wpa_config_free_blob(prevblob); 1872 } 1873 #endif /* CONFIG_NO_CONFIG_BLOBS */ 1874 1875 wpabuf_free(config->wps_vendor_ext_m1); 1876 os_free(config->ctrl_interface); 1877 os_free(config->ctrl_interface_group); 1878 os_free(config->opensc_engine_path); 1879 os_free(config->pkcs11_engine_path); 1880 os_free(config->pkcs11_module_path); 1881 os_free(config->pcsc_reader); 1882 os_free(config->pcsc_pin); 1883 os_free(config->driver_param); 1884 os_free(config->device_name); 1885 os_free(config->manufacturer); 1886 os_free(config->model_name); 1887 os_free(config->model_number); 1888 os_free(config->serial_number); 1889 os_free(config->config_methods); 1890 os_free(config->p2p_ssid_postfix); 1891 os_free(config->pssid); 1892 os_free(config->p2p_pref_chan); 1893 os_free(config->autoscan); 1894 wpabuf_free(config->wps_nfc_dh_pubkey); 1895 wpabuf_free(config->wps_nfc_dh_privkey); 1896 wpabuf_free(config->wps_nfc_dev_pw); 1897 os_free(config->ext_password_backend); 1898 os_free(config); 1899 } 1900 1901 1902 /** 1903 * wpa_config_foreach_network - Iterate over each configured network 1904 * @config: Configuration data from wpa_config_read() 1905 * @func: Callback function to process each network 1906 * @arg: Opaque argument to pass to callback function 1907 * 1908 * Iterate over the set of configured networks calling the specified 1909 * function for each item. We guard against callbacks removing the 1910 * supplied network. 1911 */ 1912 void wpa_config_foreach_network(struct wpa_config *config, 1913 void (*func)(void *, struct wpa_ssid *), 1914 void *arg) 1915 { 1916 struct wpa_ssid *ssid, *next; 1917 1918 ssid = config->ssid; 1919 while (ssid) { 1920 next = ssid->next; 1921 func(arg, ssid); 1922 ssid = next; 1923 } 1924 } 1925 1926 1927 /** 1928 * wpa_config_get_network - Get configured network based on id 1929 * @config: Configuration data from wpa_config_read() 1930 * @id: Unique network id to search for 1931 * Returns: Network configuration or %NULL if not found 1932 */ 1933 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id) 1934 { 1935 struct wpa_ssid *ssid; 1936 1937 ssid = config->ssid; 1938 while (ssid) { 1939 if (id == ssid->id) 1940 break; 1941 ssid = ssid->next; 1942 } 1943 1944 return ssid; 1945 } 1946 1947 1948 /** 1949 * wpa_config_add_network - Add a new network with empty configuration 1950 * @config: Configuration data from wpa_config_read() 1951 * Returns: The new network configuration or %NULL if operation failed 1952 */ 1953 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config) 1954 { 1955 int id; 1956 struct wpa_ssid *ssid, *last = NULL; 1957 1958 id = -1; 1959 ssid = config->ssid; 1960 while (ssid) { 1961 if (ssid->id > id) 1962 id = ssid->id; 1963 last = ssid; 1964 ssid = ssid->next; 1965 } 1966 id++; 1967 1968 ssid = os_zalloc(sizeof(*ssid)); 1969 if (ssid == NULL) 1970 return NULL; 1971 ssid->id = id; 1972 if (last) 1973 last->next = ssid; 1974 else 1975 config->ssid = ssid; 1976 1977 wpa_config_update_prio_list(config); 1978 1979 return ssid; 1980 } 1981 1982 1983 /** 1984 * wpa_config_remove_network - Remove a configured network based on id 1985 * @config: Configuration data from wpa_config_read() 1986 * @id: Unique network id to search for 1987 * Returns: 0 on success, or -1 if the network was not found 1988 */ 1989 int wpa_config_remove_network(struct wpa_config *config, int id) 1990 { 1991 struct wpa_ssid *ssid, *prev = NULL; 1992 1993 ssid = config->ssid; 1994 while (ssid) { 1995 if (id == ssid->id) 1996 break; 1997 prev = ssid; 1998 ssid = ssid->next; 1999 } 2000 2001 if (ssid == NULL) 2002 return -1; 2003 2004 if (prev) 2005 prev->next = ssid->next; 2006 else 2007 config->ssid = ssid->next; 2008 2009 wpa_config_update_prio_list(config); 2010 wpa_config_free_ssid(ssid); 2011 return 0; 2012 } 2013 2014 2015 /** 2016 * wpa_config_set_network_defaults - Set network default values 2017 * @ssid: Pointer to network configuration data 2018 */ 2019 void wpa_config_set_network_defaults(struct wpa_ssid *ssid) 2020 { 2021 ssid->proto = DEFAULT_PROTO; 2022 ssid->pairwise_cipher = DEFAULT_PAIRWISE; 2023 ssid->group_cipher = DEFAULT_GROUP; 2024 ssid->key_mgmt = DEFAULT_KEY_MGMT; 2025 ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD; 2026 #ifdef IEEE8021X_EAPOL 2027 ssid->eapol_flags = DEFAULT_EAPOL_FLAGS; 2028 ssid->eap_workaround = DEFAULT_EAP_WORKAROUND; 2029 ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE; 2030 #endif /* IEEE8021X_EAPOL */ 2031 #ifdef CONFIG_HT_OVERRIDES 2032 ssid->disable_ht = DEFAULT_DISABLE_HT; 2033 ssid->disable_ht40 = DEFAULT_DISABLE_HT40; 2034 ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU; 2035 ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR; 2036 ssid->ampdu_density = DEFAULT_AMPDU_DENSITY; 2037 #endif /* CONFIG_HT_OVERRIDES */ 2038 } 2039 2040 2041 /** 2042 * wpa_config_set - Set a variable in network configuration 2043 * @ssid: Pointer to network configuration data 2044 * @var: Variable name, e.g., "ssid" 2045 * @value: Variable value 2046 * @line: Line number in configuration file or 0 if not used 2047 * Returns: 0 on success, -1 on failure 2048 * 2049 * This function can be used to set network configuration variables based on 2050 * both the configuration file and management interface input. The value 2051 * parameter must be in the same format as the text-based configuration file is 2052 * using. For example, strings are using double quotation marks. 2053 */ 2054 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value, 2055 int line) 2056 { 2057 size_t i; 2058 int ret = 0; 2059 2060 if (ssid == NULL || var == NULL || value == NULL) 2061 return -1; 2062 2063 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2064 const struct parse_data *field = &ssid_fields[i]; 2065 if (os_strcmp(var, field->name) != 0) 2066 continue; 2067 2068 if (field->parser(field, ssid, line, value)) { 2069 if (line) { 2070 wpa_printf(MSG_ERROR, "Line %d: failed to " 2071 "parse %s '%s'.", line, var, value); 2072 } 2073 ret = -1; 2074 } 2075 break; 2076 } 2077 if (i == NUM_SSID_FIELDS) { 2078 if (line) { 2079 wpa_printf(MSG_ERROR, "Line %d: unknown network field " 2080 "'%s'.", line, var); 2081 } 2082 ret = -1; 2083 } 2084 2085 return ret; 2086 } 2087 2088 2089 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var, 2090 const char *value) 2091 { 2092 size_t len; 2093 char *buf; 2094 int ret; 2095 2096 len = os_strlen(value); 2097 buf = os_malloc(len + 3); 2098 if (buf == NULL) 2099 return -1; 2100 buf[0] = '"'; 2101 os_memcpy(buf + 1, value, len); 2102 buf[len + 1] = '"'; 2103 buf[len + 2] = '\0'; 2104 ret = wpa_config_set(ssid, var, buf, 0); 2105 os_free(buf); 2106 return ret; 2107 } 2108 2109 2110 /** 2111 * wpa_config_get_all - Get all options from network configuration 2112 * @ssid: Pointer to network configuration data 2113 * @get_keys: Determines if keys/passwords will be included in returned list 2114 * (if they may be exported) 2115 * Returns: %NULL terminated list of all set keys and their values in the form 2116 * of [key1, val1, key2, val2, ... , NULL] 2117 * 2118 * This function can be used to get list of all configured network properties. 2119 * The caller is responsible for freeing the returned list and all its 2120 * elements. 2121 */ 2122 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys) 2123 { 2124 const struct parse_data *field; 2125 char *key, *value; 2126 size_t i; 2127 char **props; 2128 int fields_num; 2129 2130 get_keys = get_keys && ssid->export_keys; 2131 2132 props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *)); 2133 if (!props) 2134 return NULL; 2135 2136 fields_num = 0; 2137 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2138 field = &ssid_fields[i]; 2139 if (field->key_data && !get_keys) 2140 continue; 2141 value = field->writer(field, ssid); 2142 if (value == NULL) 2143 continue; 2144 if (os_strlen(value) == 0) { 2145 os_free(value); 2146 continue; 2147 } 2148 2149 key = os_strdup(field->name); 2150 if (key == NULL) { 2151 os_free(value); 2152 goto err; 2153 } 2154 2155 props[fields_num * 2] = key; 2156 props[fields_num * 2 + 1] = value; 2157 2158 fields_num++; 2159 } 2160 2161 return props; 2162 2163 err: 2164 value = *props; 2165 while (value) 2166 os_free(value++); 2167 os_free(props); 2168 return NULL; 2169 } 2170 2171 2172 #ifndef NO_CONFIG_WRITE 2173 /** 2174 * wpa_config_get - Get a variable in network configuration 2175 * @ssid: Pointer to network configuration data 2176 * @var: Variable name, e.g., "ssid" 2177 * Returns: Value of the variable or %NULL on failure 2178 * 2179 * This function can be used to get network configuration variables. The 2180 * returned value is a copy of the configuration variable in text format, i.e,. 2181 * the same format that the text-based configuration file and wpa_config_set() 2182 * are using for the value. The caller is responsible for freeing the returned 2183 * value. 2184 */ 2185 char * wpa_config_get(struct wpa_ssid *ssid, const char *var) 2186 { 2187 size_t i; 2188 2189 if (ssid == NULL || var == NULL) 2190 return NULL; 2191 2192 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2193 const struct parse_data *field = &ssid_fields[i]; 2194 if (os_strcmp(var, field->name) == 0) 2195 return field->writer(field, ssid); 2196 } 2197 2198 return NULL; 2199 } 2200 2201 2202 /** 2203 * wpa_config_get_no_key - Get a variable in network configuration (no keys) 2204 * @ssid: Pointer to network configuration data 2205 * @var: Variable name, e.g., "ssid" 2206 * Returns: Value of the variable or %NULL on failure 2207 * 2208 * This function can be used to get network configuration variable like 2209 * wpa_config_get(). The only difference is that this functions does not expose 2210 * key/password material from the configuration. In case a key/password field 2211 * is requested, the returned value is an empty string or %NULL if the variable 2212 * is not set or "*" if the variable is set (regardless of its value). The 2213 * returned value is a copy of the configuration variable in text format, i.e,. 2214 * the same format that the text-based configuration file and wpa_config_set() 2215 * are using for the value. The caller is responsible for freeing the returned 2216 * value. 2217 */ 2218 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var) 2219 { 2220 size_t i; 2221 2222 if (ssid == NULL || var == NULL) 2223 return NULL; 2224 2225 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2226 const struct parse_data *field = &ssid_fields[i]; 2227 if (os_strcmp(var, field->name) == 0) { 2228 char *res = field->writer(field, ssid); 2229 if (field->key_data) { 2230 if (res && res[0]) { 2231 wpa_printf(MSG_DEBUG, "Do not allow " 2232 "key_data field to be " 2233 "exposed"); 2234 os_free(res); 2235 return os_strdup("*"); 2236 } 2237 2238 os_free(res); 2239 return NULL; 2240 } 2241 return res; 2242 } 2243 } 2244 2245 return NULL; 2246 } 2247 #endif /* NO_CONFIG_WRITE */ 2248 2249 2250 /** 2251 * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID 2252 * @ssid: Pointer to network configuration data 2253 * 2254 * This function must be called to update WPA PSK when either SSID or the 2255 * passphrase has changed for the network configuration. 2256 */ 2257 void wpa_config_update_psk(struct wpa_ssid *ssid) 2258 { 2259 #ifndef CONFIG_NO_PBKDF2 2260 pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096, 2261 ssid->psk, PMK_LEN); 2262 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)", 2263 ssid->psk, PMK_LEN); 2264 ssid->psk_set = 1; 2265 #endif /* CONFIG_NO_PBKDF2 */ 2266 } 2267 2268 2269 int wpa_config_set_cred(struct wpa_cred *cred, const char *var, 2270 const char *value, int line) 2271 { 2272 char *val; 2273 size_t len; 2274 2275 if (os_strcmp(var, "priority") == 0) { 2276 cred->priority = atoi(value); 2277 return 0; 2278 } 2279 2280 if (os_strcmp(var, "pcsc") == 0) { 2281 cred->pcsc = atoi(value); 2282 return 0; 2283 } 2284 2285 if (os_strcmp(var, "eap") == 0) { 2286 struct eap_method_type method; 2287 method.method = eap_peer_get_type(value, &method.vendor); 2288 if (method.vendor == EAP_VENDOR_IETF && 2289 method.method == EAP_TYPE_NONE) { 2290 wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' " 2291 "for a credential", line, value); 2292 return -1; 2293 } 2294 os_free(cred->eap_method); 2295 cred->eap_method = os_malloc(sizeof(*cred->eap_method)); 2296 if (cred->eap_method == NULL) 2297 return -1; 2298 os_memcpy(cred->eap_method, &method, sizeof(method)); 2299 return 0; 2300 } 2301 2302 if (os_strcmp(var, "password") == 0 && 2303 os_strncmp(value, "ext:", 4) == 0) { 2304 os_free(cred->password); 2305 cred->password = os_strdup(value); 2306 cred->ext_password = 1; 2307 return 0; 2308 } 2309 2310 val = wpa_config_parse_string(value, &len); 2311 if (val == NULL) { 2312 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string " 2313 "value '%s'.", line, var, value); 2314 return -1; 2315 } 2316 2317 if (os_strcmp(var, "realm") == 0) { 2318 os_free(cred->realm); 2319 cred->realm = val; 2320 return 0; 2321 } 2322 2323 if (os_strcmp(var, "username") == 0) { 2324 os_free(cred->username); 2325 cred->username = val; 2326 return 0; 2327 } 2328 2329 if (os_strcmp(var, "password") == 0) { 2330 os_free(cred->password); 2331 cred->password = val; 2332 cred->ext_password = 0; 2333 return 0; 2334 } 2335 2336 if (os_strcmp(var, "ca_cert") == 0) { 2337 os_free(cred->ca_cert); 2338 cred->ca_cert = val; 2339 return 0; 2340 } 2341 2342 if (os_strcmp(var, "client_cert") == 0) { 2343 os_free(cred->client_cert); 2344 cred->client_cert = val; 2345 return 0; 2346 } 2347 2348 if (os_strcmp(var, "private_key") == 0) { 2349 os_free(cred->private_key); 2350 cred->private_key = val; 2351 return 0; 2352 } 2353 2354 if (os_strcmp(var, "private_key_passwd") == 0) { 2355 os_free(cred->private_key_passwd); 2356 cred->private_key_passwd = val; 2357 return 0; 2358 } 2359 2360 if (os_strcmp(var, "imsi") == 0) { 2361 os_free(cred->imsi); 2362 cred->imsi = val; 2363 return 0; 2364 } 2365 2366 if (os_strcmp(var, "milenage") == 0) { 2367 os_free(cred->milenage); 2368 cred->milenage = val; 2369 return 0; 2370 } 2371 2372 if (os_strcmp(var, "domain") == 0) { 2373 os_free(cred->domain); 2374 cred->domain = val; 2375 return 0; 2376 } 2377 2378 if (os_strcmp(var, "phase1") == 0) { 2379 os_free(cred->phase1); 2380 cred->phase1 = val; 2381 return 0; 2382 } 2383 2384 if (os_strcmp(var, "phase2") == 0) { 2385 os_free(cred->phase2); 2386 cred->phase2 = val; 2387 return 0; 2388 } 2389 2390 if (os_strcmp(var, "roaming_consortium") == 0) { 2391 if (len < 3 || len > sizeof(cred->roaming_consortium)) { 2392 wpa_printf(MSG_ERROR, "Line %d: invalid " 2393 "roaming_consortium length %d (3..15 " 2394 "expected)", line, (int) len); 2395 os_free(val); 2396 return -1; 2397 } 2398 os_memcpy(cred->roaming_consortium, val, len); 2399 cred->roaming_consortium_len = len; 2400 os_free(val); 2401 return 0; 2402 } 2403 2404 if (line) { 2405 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.", 2406 line, var); 2407 } 2408 2409 os_free(val); 2410 2411 return -1; 2412 } 2413 2414 2415 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id) 2416 { 2417 struct wpa_cred *cred; 2418 2419 cred = config->cred; 2420 while (cred) { 2421 if (id == cred->id) 2422 break; 2423 cred = cred->next; 2424 } 2425 2426 return cred; 2427 } 2428 2429 2430 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config) 2431 { 2432 int id; 2433 struct wpa_cred *cred, *last = NULL; 2434 2435 id = -1; 2436 cred = config->cred; 2437 while (cred) { 2438 if (cred->id > id) 2439 id = cred->id; 2440 last = cred; 2441 cred = cred->next; 2442 } 2443 id++; 2444 2445 cred = os_zalloc(sizeof(*cred)); 2446 if (cred == NULL) 2447 return NULL; 2448 cred->id = id; 2449 if (last) 2450 last->next = cred; 2451 else 2452 config->cred = cred; 2453 2454 return cred; 2455 } 2456 2457 2458 int wpa_config_remove_cred(struct wpa_config *config, int id) 2459 { 2460 struct wpa_cred *cred, *prev = NULL; 2461 2462 cred = config->cred; 2463 while (cred) { 2464 if (id == cred->id) 2465 break; 2466 prev = cred; 2467 cred = cred->next; 2468 } 2469 2470 if (cred == NULL) 2471 return -1; 2472 2473 if (prev) 2474 prev->next = cred->next; 2475 else 2476 config->cred = cred->next; 2477 2478 wpa_config_free_cred(cred); 2479 return 0; 2480 } 2481 2482 2483 #ifndef CONFIG_NO_CONFIG_BLOBS 2484 /** 2485 * wpa_config_get_blob - Get a named configuration blob 2486 * @config: Configuration data from wpa_config_read() 2487 * @name: Name of the blob 2488 * Returns: Pointer to blob data or %NULL if not found 2489 */ 2490 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config, 2491 const char *name) 2492 { 2493 struct wpa_config_blob *blob = config->blobs; 2494 2495 while (blob) { 2496 if (os_strcmp(blob->name, name) == 0) 2497 return blob; 2498 blob = blob->next; 2499 } 2500 return NULL; 2501 } 2502 2503 2504 /** 2505 * wpa_config_set_blob - Set or add a named configuration blob 2506 * @config: Configuration data from wpa_config_read() 2507 * @blob: New value for the blob 2508 * 2509 * Adds a new configuration blob or replaces the current value of an existing 2510 * blob. 2511 */ 2512 void wpa_config_set_blob(struct wpa_config *config, 2513 struct wpa_config_blob *blob) 2514 { 2515 wpa_config_remove_blob(config, blob->name); 2516 blob->next = config->blobs; 2517 config->blobs = blob; 2518 } 2519 2520 2521 /** 2522 * wpa_config_free_blob - Free blob data 2523 * @blob: Pointer to blob to be freed 2524 */ 2525 void wpa_config_free_blob(struct wpa_config_blob *blob) 2526 { 2527 if (blob) { 2528 os_free(blob->name); 2529 os_free(blob->data); 2530 os_free(blob); 2531 } 2532 } 2533 2534 2535 /** 2536 * wpa_config_remove_blob - Remove a named configuration blob 2537 * @config: Configuration data from wpa_config_read() 2538 * @name: Name of the blob to remove 2539 * Returns: 0 if blob was removed or -1 if blob was not found 2540 */ 2541 int wpa_config_remove_blob(struct wpa_config *config, const char *name) 2542 { 2543 struct wpa_config_blob *pos = config->blobs, *prev = NULL; 2544 2545 while (pos) { 2546 if (os_strcmp(pos->name, name) == 0) { 2547 if (prev) 2548 prev->next = pos->next; 2549 else 2550 config->blobs = pos->next; 2551 wpa_config_free_blob(pos); 2552 return 0; 2553 } 2554 prev = pos; 2555 pos = pos->next; 2556 } 2557 2558 return -1; 2559 } 2560 #endif /* CONFIG_NO_CONFIG_BLOBS */ 2561 2562 2563 /** 2564 * wpa_config_alloc_empty - Allocate an empty configuration 2565 * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain 2566 * socket 2567 * @driver_param: Driver parameters 2568 * Returns: Pointer to allocated configuration data or %NULL on failure 2569 */ 2570 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface, 2571 const char *driver_param) 2572 { 2573 struct wpa_config *config; 2574 const int aCWmin = 4, aCWmax = 10; 2575 const struct hostapd_wmm_ac_params ac_bk = 2576 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */ 2577 const struct hostapd_wmm_ac_params ac_be = 2578 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */ 2579 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */ 2580 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 }; 2581 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */ 2582 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 }; 2583 2584 config = os_zalloc(sizeof(*config)); 2585 if (config == NULL) 2586 return NULL; 2587 config->eapol_version = DEFAULT_EAPOL_VERSION; 2588 config->ap_scan = DEFAULT_AP_SCAN; 2589 config->fast_reauth = DEFAULT_FAST_REAUTH; 2590 config->p2p_go_intent = DEFAULT_P2P_GO_INTENT; 2591 config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS; 2592 config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY; 2593 config->bss_max_count = DEFAULT_BSS_MAX_COUNT; 2594 config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE; 2595 config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT; 2596 config->max_num_sta = DEFAULT_MAX_NUM_STA; 2597 config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE; 2598 config->wmm_ac_params[0] = ac_be; 2599 config->wmm_ac_params[1] = ac_bk; 2600 config->wmm_ac_params[2] = ac_vi; 2601 config->wmm_ac_params[3] = ac_vo; 2602 2603 if (ctrl_interface) 2604 config->ctrl_interface = os_strdup(ctrl_interface); 2605 if (driver_param) 2606 config->driver_param = os_strdup(driver_param); 2607 2608 return config; 2609 } 2610 2611 2612 #ifndef CONFIG_NO_STDOUT_DEBUG 2613 /** 2614 * wpa_config_debug_dump_networks - Debug dump of configured networks 2615 * @config: Configuration data from wpa_config_read() 2616 */ 2617 void wpa_config_debug_dump_networks(struct wpa_config *config) 2618 { 2619 int prio; 2620 struct wpa_ssid *ssid; 2621 2622 for (prio = 0; prio < config->num_prio; prio++) { 2623 ssid = config->pssid[prio]; 2624 wpa_printf(MSG_DEBUG, "Priority group %d", 2625 ssid->priority); 2626 while (ssid) { 2627 wpa_printf(MSG_DEBUG, " id=%d ssid='%s'", 2628 ssid->id, 2629 wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 2630 ssid = ssid->pnext; 2631 } 2632 } 2633 } 2634 #endif /* CONFIG_NO_STDOUT_DEBUG */ 2635 2636 2637 struct global_parse_data { 2638 char *name; 2639 int (*parser)(const struct global_parse_data *data, 2640 struct wpa_config *config, int line, const char *value); 2641 void *param1, *param2, *param3; 2642 unsigned int changed_flag; 2643 }; 2644 2645 2646 static int wpa_global_config_parse_int(const struct global_parse_data *data, 2647 struct wpa_config *config, int line, 2648 const char *pos) 2649 { 2650 int *dst; 2651 dst = (int *) (((u8 *) config) + (long) data->param1); 2652 *dst = atoi(pos); 2653 wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst); 2654 2655 if (data->param2 && *dst < (long) data->param2) { 2656 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d " 2657 "min_value=%ld)", line, data->name, *dst, 2658 (long) data->param2); 2659 *dst = (long) data->param2; 2660 return -1; 2661 } 2662 2663 if (data->param3 && *dst > (long) data->param3) { 2664 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d " 2665 "max_value=%ld)", line, data->name, *dst, 2666 (long) data->param3); 2667 *dst = (long) data->param3; 2668 return -1; 2669 } 2670 2671 return 0; 2672 } 2673 2674 2675 static int wpa_global_config_parse_str(const struct global_parse_data *data, 2676 struct wpa_config *config, int line, 2677 const char *pos) 2678 { 2679 size_t len; 2680 char **dst, *tmp; 2681 2682 len = os_strlen(pos); 2683 if (data->param2 && len < (size_t) data->param2) { 2684 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu " 2685 "min_len=%ld)", line, data->name, 2686 (unsigned long) len, (long) data->param2); 2687 return -1; 2688 } 2689 2690 if (data->param3 && len > (size_t) data->param3) { 2691 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu " 2692 "max_len=%ld)", line, data->name, 2693 (unsigned long) len, (long) data->param3); 2694 return -1; 2695 } 2696 2697 tmp = os_strdup(pos); 2698 if (tmp == NULL) 2699 return -1; 2700 2701 dst = (char **) (((u8 *) config) + (long) data->param1); 2702 os_free(*dst); 2703 *dst = tmp; 2704 wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst); 2705 2706 return 0; 2707 } 2708 2709 2710 static int wpa_global_config_parse_bin(const struct global_parse_data *data, 2711 struct wpa_config *config, int line, 2712 const char *pos) 2713 { 2714 size_t len; 2715 struct wpabuf **dst, *tmp; 2716 2717 len = os_strlen(pos); 2718 if (len & 0x01) 2719 return -1; 2720 2721 tmp = wpabuf_alloc(len / 2); 2722 if (tmp == NULL) 2723 return -1; 2724 2725 if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) { 2726 wpabuf_free(tmp); 2727 return -1; 2728 } 2729 2730 dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1); 2731 wpabuf_free(*dst); 2732 *dst = tmp; 2733 wpa_printf(MSG_DEBUG, "%s", data->name); 2734 2735 return 0; 2736 } 2737 2738 2739 static int wpa_config_process_country(const struct global_parse_data *data, 2740 struct wpa_config *config, int line, 2741 const char *pos) 2742 { 2743 if (!pos[0] || !pos[1]) { 2744 wpa_printf(MSG_DEBUG, "Invalid country set"); 2745 return -1; 2746 } 2747 config->country[0] = pos[0]; 2748 config->country[1] = pos[1]; 2749 wpa_printf(MSG_DEBUG, "country='%c%c'", 2750 config->country[0], config->country[1]); 2751 return 0; 2752 } 2753 2754 2755 static int wpa_config_process_load_dynamic_eap( 2756 const struct global_parse_data *data, struct wpa_config *config, 2757 int line, const char *so) 2758 { 2759 int ret; 2760 wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so); 2761 ret = eap_peer_method_load(so); 2762 if (ret == -2) { 2763 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not " 2764 "reloading."); 2765 } else if (ret) { 2766 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP " 2767 "method '%s'.", line, so); 2768 return -1; 2769 } 2770 2771 return 0; 2772 } 2773 2774 2775 #ifdef CONFIG_WPS 2776 2777 static int wpa_config_process_uuid(const struct global_parse_data *data, 2778 struct wpa_config *config, int line, 2779 const char *pos) 2780 { 2781 char buf[40]; 2782 if (uuid_str2bin(pos, config->uuid)) { 2783 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line); 2784 return -1; 2785 } 2786 uuid_bin2str(config->uuid, buf, sizeof(buf)); 2787 wpa_printf(MSG_DEBUG, "uuid=%s", buf); 2788 return 0; 2789 } 2790 2791 2792 static int wpa_config_process_device_type( 2793 const struct global_parse_data *data, 2794 struct wpa_config *config, int line, const char *pos) 2795 { 2796 return wps_dev_type_str2bin(pos, config->device_type); 2797 } 2798 2799 2800 static int wpa_config_process_os_version(const struct global_parse_data *data, 2801 struct wpa_config *config, int line, 2802 const char *pos) 2803 { 2804 if (hexstr2bin(pos, config->os_version, 4)) { 2805 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line); 2806 return -1; 2807 } 2808 wpa_printf(MSG_DEBUG, "os_version=%08x", 2809 WPA_GET_BE32(config->os_version)); 2810 return 0; 2811 } 2812 2813 2814 static int wpa_config_process_wps_vendor_ext_m1( 2815 const struct global_parse_data *data, 2816 struct wpa_config *config, int line, const char *pos) 2817 { 2818 struct wpabuf *tmp; 2819 int len = os_strlen(pos) / 2; 2820 u8 *p; 2821 2822 if (!len) { 2823 wpa_printf(MSG_ERROR, "Line %d: " 2824 "invalid wps_vendor_ext_m1", line); 2825 return -1; 2826 } 2827 2828 tmp = wpabuf_alloc(len); 2829 if (tmp) { 2830 p = wpabuf_put(tmp, len); 2831 2832 if (hexstr2bin(pos, p, len)) { 2833 wpa_printf(MSG_ERROR, "Line %d: " 2834 "invalid wps_vendor_ext_m1", line); 2835 wpabuf_free(tmp); 2836 return -1; 2837 } 2838 2839 wpabuf_free(config->wps_vendor_ext_m1); 2840 config->wps_vendor_ext_m1 = tmp; 2841 } else { 2842 wpa_printf(MSG_ERROR, "Can not allocate " 2843 "memory for wps_vendor_ext_m1"); 2844 return -1; 2845 } 2846 2847 return 0; 2848 } 2849 2850 #endif /* CONFIG_WPS */ 2851 2852 #ifdef CONFIG_P2P 2853 static int wpa_config_process_sec_device_type( 2854 const struct global_parse_data *data, 2855 struct wpa_config *config, int line, const char *pos) 2856 { 2857 int idx; 2858 2859 if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) { 2860 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type " 2861 "items", line); 2862 return -1; 2863 } 2864 2865 idx = config->num_sec_device_types; 2866 2867 if (wps_dev_type_str2bin(pos, config->sec_device_type[idx])) 2868 return -1; 2869 2870 config->num_sec_device_types++; 2871 return 0; 2872 } 2873 2874 2875 static int wpa_config_process_p2p_pref_chan( 2876 const struct global_parse_data *data, 2877 struct wpa_config *config, int line, const char *pos) 2878 { 2879 struct p2p_channel *pref = NULL, *n; 2880 unsigned int num = 0; 2881 const char *pos2; 2882 u8 op_class, chan; 2883 2884 /* format: class:chan,class:chan,... */ 2885 2886 while (*pos) { 2887 op_class = atoi(pos); 2888 pos2 = os_strchr(pos, ':'); 2889 if (pos2 == NULL) 2890 goto fail; 2891 pos2++; 2892 chan = atoi(pos2); 2893 2894 n = os_realloc_array(pref, num + 1, 2895 sizeof(struct p2p_channel)); 2896 if (n == NULL) 2897 goto fail; 2898 pref = n; 2899 pref[num].op_class = op_class; 2900 pref[num].chan = chan; 2901 num++; 2902 2903 pos = os_strchr(pos2, ','); 2904 if (pos == NULL) 2905 break; 2906 pos++; 2907 } 2908 2909 os_free(config->p2p_pref_chan); 2910 config->p2p_pref_chan = pref; 2911 config->num_p2p_pref_chan = num; 2912 wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs", 2913 (u8 *) config->p2p_pref_chan, 2914 config->num_p2p_pref_chan * sizeof(struct p2p_channel)); 2915 2916 return 0; 2917 2918 fail: 2919 os_free(pref); 2920 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line); 2921 return -1; 2922 } 2923 #endif /* CONFIG_P2P */ 2924 2925 2926 static int wpa_config_process_hessid( 2927 const struct global_parse_data *data, 2928 struct wpa_config *config, int line, const char *pos) 2929 { 2930 if (hwaddr_aton2(pos, config->hessid) < 0) { 2931 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'", 2932 line, pos); 2933 return -1; 2934 } 2935 2936 return 0; 2937 } 2938 2939 2940 #ifdef OFFSET 2941 #undef OFFSET 2942 #endif /* OFFSET */ 2943 /* OFFSET: Get offset of a variable within the wpa_config structure */ 2944 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v) 2945 2946 #define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL 2947 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL 2948 #define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f) 2949 #define INT(f) _INT(f), NULL, NULL 2950 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max 2951 #define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f) 2952 #define STR(f) _STR(f), NULL, NULL 2953 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max 2954 #define BIN(f) #f, wpa_global_config_parse_bin, OFFSET(f), NULL, NULL 2955 2956 static const struct global_parse_data global_fields[] = { 2957 #ifdef CONFIG_CTRL_IFACE 2958 { STR(ctrl_interface), 0 }, 2959 { STR(ctrl_interface_group), 0 } /* deprecated */, 2960 #endif /* CONFIG_CTRL_IFACE */ 2961 { INT_RANGE(eapol_version, 1, 2), 0 }, 2962 { INT(ap_scan), 0 }, 2963 { INT(disable_scan_offload), 0 }, 2964 { INT(fast_reauth), 0 }, 2965 { STR(opensc_engine_path), 0 }, 2966 { STR(pkcs11_engine_path), 0 }, 2967 { STR(pkcs11_module_path), 0 }, 2968 { STR(pcsc_reader), 0 }, 2969 { STR(pcsc_pin), 0 }, 2970 { STR(driver_param), 0 }, 2971 { INT(dot11RSNAConfigPMKLifetime), 0 }, 2972 { INT(dot11RSNAConfigPMKReauthThreshold), 0 }, 2973 { INT(dot11RSNAConfigSATimeout), 0 }, 2974 #ifndef CONFIG_NO_CONFIG_WRITE 2975 { INT(update_config), 0 }, 2976 #endif /* CONFIG_NO_CONFIG_WRITE */ 2977 { FUNC_NO_VAR(load_dynamic_eap), 0 }, 2978 #ifdef CONFIG_WPS 2979 { FUNC(uuid), CFG_CHANGED_UUID }, 2980 { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME }, 2981 { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING }, 2982 { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING }, 2983 { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING }, 2984 { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING }, 2985 { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE }, 2986 { FUNC(os_version), CFG_CHANGED_OS_VERSION }, 2987 { STR(config_methods), CFG_CHANGED_CONFIG_METHODS }, 2988 { INT_RANGE(wps_cred_processing, 0, 2), 0 }, 2989 { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION }, 2990 #endif /* CONFIG_WPS */ 2991 #ifdef CONFIG_P2P 2992 { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE }, 2993 { INT(p2p_listen_reg_class), 0 }, 2994 { INT(p2p_listen_channel), 0 }, 2995 { INT(p2p_oper_reg_class), 0 }, 2996 { INT(p2p_oper_channel), 0 }, 2997 { INT_RANGE(p2p_go_intent, 0, 15), 0 }, 2998 { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX }, 2999 { INT_RANGE(persistent_reconnect, 0, 1), 0 }, 3000 { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS }, 3001 { INT(p2p_group_idle), 0 }, 3002 { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN }, 3003 #endif /* CONFIG_P2P */ 3004 { FUNC(country), CFG_CHANGED_COUNTRY }, 3005 { INT(bss_max_count), 0 }, 3006 { INT(bss_expiration_age), 0 }, 3007 { INT(bss_expiration_scan_count), 0 }, 3008 { INT_RANGE(filter_ssids, 0, 1), 0 }, 3009 { INT_RANGE(filter_rssi, -100, 0), 0 }, 3010 { INT(max_num_sta), 0 }, 3011 { INT_RANGE(disassoc_low_ack, 0, 1), 0 }, 3012 #ifdef CONFIG_HS20 3013 { INT_RANGE(hs20, 0, 1), 0 }, 3014 #endif /* CONFIG_HS20 */ 3015 { INT_RANGE(interworking, 0, 1), 0 }, 3016 { FUNC(hessid), 0 }, 3017 { INT_RANGE(access_network_type, 0, 15), 0 }, 3018 { INT_RANGE(pbc_in_m1, 0, 1), 0 }, 3019 { STR(autoscan), 0 }, 3020 { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff), 0 }, 3021 { BIN(wps_nfc_dh_pubkey), 0 }, 3022 { BIN(wps_nfc_dh_privkey), 0 }, 3023 { BIN(wps_nfc_dev_pw), 0 }, 3024 { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND }, 3025 { INT(p2p_go_max_inactivity), 0 }, 3026 { INT_RANGE(auto_interworking, 0, 1), 0 }, 3027 }; 3028 3029 #undef FUNC 3030 #undef _INT 3031 #undef INT 3032 #undef INT_RANGE 3033 #undef _STR 3034 #undef STR 3035 #undef STR_RANGE 3036 #undef BIN 3037 #define NUM_GLOBAL_FIELDS (sizeof(global_fields) / sizeof(global_fields[0])) 3038 3039 3040 int wpa_config_process_global(struct wpa_config *config, char *pos, int line) 3041 { 3042 size_t i; 3043 int ret = 0; 3044 3045 for (i = 0; i < NUM_GLOBAL_FIELDS; i++) { 3046 const struct global_parse_data *field = &global_fields[i]; 3047 size_t flen = os_strlen(field->name); 3048 if (os_strncmp(pos, field->name, flen) != 0 || 3049 pos[flen] != '=') 3050 continue; 3051 3052 if (field->parser(field, config, line, pos + flen + 1)) { 3053 wpa_printf(MSG_ERROR, "Line %d: failed to " 3054 "parse '%s'.", line, pos); 3055 ret = -1; 3056 } 3057 config->changed_parameters |= field->changed_flag; 3058 break; 3059 } 3060 if (i == NUM_GLOBAL_FIELDS) { 3061 #ifdef CONFIG_AP 3062 if (os_strncmp(pos, "wmm_ac_", 7) == 0) { 3063 char *tmp = os_strchr(pos, '='); 3064 if (tmp == NULL) { 3065 if (line < 0) 3066 return -1; 3067 wpa_printf(MSG_ERROR, "Line %d: invalid line " 3068 "'%s'", line, pos); 3069 return -1; 3070 } 3071 *tmp++ = '\0'; 3072 if (hostapd_config_wmm_ac(config->wmm_ac_params, pos, 3073 tmp)) { 3074 wpa_printf(MSG_ERROR, "Line %d: invalid WMM " 3075 "AC item", line); 3076 return -1; 3077 } 3078 } 3079 #endif /* CONFIG_AP */ 3080 if (line < 0) 3081 return -1; 3082 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.", 3083 line, pos); 3084 ret = -1; 3085 } 3086 3087 return ret; 3088 } 3089
