1 /* 2 * WPA Supplicant / Configuration parser and common functions 3 * Copyright (c) 2003-2012, Jouni Malinen <j@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 #ifdef CONFIG_SAE 508 else if (os_strcmp(start, "SAE") == 0) 509 val |= WPA_KEY_MGMT_SAE; 510 else if (os_strcmp(start, "FT-SAE") == 0) 511 val |= WPA_KEY_MGMT_FT_SAE; 512 #endif /* CONFIG_SAE */ 513 else { 514 wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'", 515 line, start); 516 errors++; 517 } 518 519 if (last) 520 break; 521 start = end + 1; 522 } 523 os_free(buf); 524 525 if (val == 0) { 526 wpa_printf(MSG_ERROR, 527 "Line %d: no key_mgmt values configured.", line); 528 errors++; 529 } 530 531 wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val); 532 ssid->key_mgmt = val; 533 return errors ? -1 : 0; 534 } 535 536 537 #ifndef NO_CONFIG_WRITE 538 static char * wpa_config_write_key_mgmt(const struct parse_data *data, 539 struct wpa_ssid *ssid) 540 { 541 char *buf, *pos, *end; 542 int ret; 543 544 pos = buf = os_zalloc(50); 545 if (buf == NULL) 546 return NULL; 547 end = buf + 50; 548 549 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) { 550 ret = os_snprintf(pos, end - pos, "%sWPA-PSK", 551 pos == buf ? "" : " "); 552 if (ret < 0 || ret >= end - pos) { 553 end[-1] = '\0'; 554 return buf; 555 } 556 pos += ret; 557 } 558 559 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) { 560 ret = os_snprintf(pos, end - pos, "%sWPA-EAP", 561 pos == buf ? "" : " "); 562 if (ret < 0 || ret >= end - pos) { 563 end[-1] = '\0'; 564 return buf; 565 } 566 pos += ret; 567 } 568 569 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 570 ret = os_snprintf(pos, end - pos, "%sIEEE8021X", 571 pos == buf ? "" : " "); 572 if (ret < 0 || ret >= end - pos) { 573 end[-1] = '\0'; 574 return buf; 575 } 576 pos += ret; 577 } 578 579 if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) { 580 ret = os_snprintf(pos, end - pos, "%sNONE", 581 pos == buf ? "" : " "); 582 if (ret < 0 || ret >= end - pos) { 583 end[-1] = '\0'; 584 return buf; 585 } 586 pos += ret; 587 } 588 589 if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) { 590 ret = os_snprintf(pos, end - pos, "%sWPA-NONE", 591 pos == buf ? "" : " "); 592 if (ret < 0 || ret >= end - pos) { 593 end[-1] = '\0'; 594 return buf; 595 } 596 pos += ret; 597 } 598 599 #ifdef CONFIG_IEEE80211R 600 if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) 601 pos += os_snprintf(pos, end - pos, "%sFT-PSK", 602 pos == buf ? "" : " "); 603 604 if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) 605 pos += os_snprintf(pos, end - pos, "%sFT-EAP", 606 pos == buf ? "" : " "); 607 #endif /* CONFIG_IEEE80211R */ 608 609 #ifdef CONFIG_IEEE80211W 610 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) 611 pos += os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256", 612 pos == buf ? "" : " "); 613 614 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) 615 pos += os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256", 616 pos == buf ? "" : " "); 617 #endif /* CONFIG_IEEE80211W */ 618 619 #ifdef CONFIG_WPS 620 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 621 pos += os_snprintf(pos, end - pos, "%sWPS", 622 pos == buf ? "" : " "); 623 #endif /* CONFIG_WPS */ 624 625 return buf; 626 } 627 #endif /* NO_CONFIG_WRITE */ 628 629 630 static int wpa_config_parse_cipher(int line, const char *value) 631 { 632 int val = 0, last; 633 char *start, *end, *buf; 634 635 buf = os_strdup(value); 636 if (buf == NULL) 637 return -1; 638 start = buf; 639 640 while (*start != '\0') { 641 while (*start == ' ' || *start == '\t') 642 start++; 643 if (*start == '\0') 644 break; 645 end = start; 646 while (*end != ' ' && *end != '\t' && *end != '\0') 647 end++; 648 last = *end == '\0'; 649 *end = '\0'; 650 if (os_strcmp(start, "CCMP") == 0) 651 val |= WPA_CIPHER_CCMP; 652 else if (os_strcmp(start, "GCMP") == 0) 653 val |= WPA_CIPHER_GCMP; 654 else if (os_strcmp(start, "TKIP") == 0) 655 val |= WPA_CIPHER_TKIP; 656 else if (os_strcmp(start, "WEP104") == 0) 657 val |= WPA_CIPHER_WEP104; 658 else if (os_strcmp(start, "WEP40") == 0) 659 val |= WPA_CIPHER_WEP40; 660 else if (os_strcmp(start, "NONE") == 0) 661 val |= WPA_CIPHER_NONE; 662 else { 663 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.", 664 line, start); 665 os_free(buf); 666 return -1; 667 } 668 669 if (last) 670 break; 671 start = end + 1; 672 } 673 os_free(buf); 674 675 if (val == 0) { 676 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.", 677 line); 678 return -1; 679 } 680 return val; 681 } 682 683 684 #ifndef NO_CONFIG_WRITE 685 static char * wpa_config_write_cipher(int cipher) 686 { 687 char *buf, *pos, *end; 688 int ret; 689 690 pos = buf = os_zalloc(50); 691 if (buf == NULL) 692 return NULL; 693 end = buf + 50; 694 695 if (cipher & WPA_CIPHER_CCMP) { 696 ret = os_snprintf(pos, end - pos, "%sCCMP", 697 pos == buf ? "" : " "); 698 if (ret < 0 || ret >= end - pos) { 699 end[-1] = '\0'; 700 return buf; 701 } 702 pos += ret; 703 } 704 705 if (cipher & WPA_CIPHER_GCMP) { 706 ret = os_snprintf(pos, end - pos, "%sGCMP", 707 pos == buf ? "" : " "); 708 if (ret < 0 || ret >= end - pos) { 709 end[-1] = '\0'; 710 return buf; 711 } 712 pos += ret; 713 } 714 715 if (cipher & WPA_CIPHER_TKIP) { 716 ret = os_snprintf(pos, end - pos, "%sTKIP", 717 pos == buf ? "" : " "); 718 if (ret < 0 || ret >= end - pos) { 719 end[-1] = '\0'; 720 return buf; 721 } 722 pos += ret; 723 } 724 725 if (cipher & WPA_CIPHER_WEP104) { 726 ret = os_snprintf(pos, end - pos, "%sWEP104", 727 pos == buf ? "" : " "); 728 if (ret < 0 || ret >= end - pos) { 729 end[-1] = '\0'; 730 return buf; 731 } 732 pos += ret; 733 } 734 735 if (cipher & WPA_CIPHER_WEP40) { 736 ret = os_snprintf(pos, end - pos, "%sWEP40", 737 pos == buf ? "" : " "); 738 if (ret < 0 || ret >= end - pos) { 739 end[-1] = '\0'; 740 return buf; 741 } 742 pos += ret; 743 } 744 745 if (cipher & WPA_CIPHER_NONE) { 746 ret = os_snprintf(pos, end - pos, "%sNONE", 747 pos == buf ? "" : " "); 748 if (ret < 0 || ret >= end - pos) { 749 end[-1] = '\0'; 750 return buf; 751 } 752 pos += ret; 753 } 754 755 return buf; 756 } 757 #endif /* NO_CONFIG_WRITE */ 758 759 760 static int wpa_config_parse_pairwise(const struct parse_data *data, 761 struct wpa_ssid *ssid, int line, 762 const char *value) 763 { 764 int val; 765 val = wpa_config_parse_cipher(line, value); 766 if (val == -1) 767 return -1; 768 if (val & ~(WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | WPA_CIPHER_TKIP | 769 WPA_CIPHER_NONE)) { 770 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher " 771 "(0x%x).", line, val); 772 return -1; 773 } 774 775 wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val); 776 ssid->pairwise_cipher = val; 777 return 0; 778 } 779 780 781 #ifndef NO_CONFIG_WRITE 782 static char * wpa_config_write_pairwise(const struct parse_data *data, 783 struct wpa_ssid *ssid) 784 { 785 return wpa_config_write_cipher(ssid->pairwise_cipher); 786 } 787 #endif /* NO_CONFIG_WRITE */ 788 789 790 static int wpa_config_parse_group(const struct parse_data *data, 791 struct wpa_ssid *ssid, int line, 792 const char *value) 793 { 794 int val; 795 val = wpa_config_parse_cipher(line, value); 796 if (val == -1) 797 return -1; 798 if (val & ~(WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | WPA_CIPHER_TKIP | 799 WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) { 800 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher " 801 "(0x%x).", line, val); 802 return -1; 803 } 804 805 wpa_printf(MSG_MSGDUMP, "group: 0x%x", val); 806 ssid->group_cipher = val; 807 return 0; 808 } 809 810 811 #ifndef NO_CONFIG_WRITE 812 static char * wpa_config_write_group(const struct parse_data *data, 813 struct wpa_ssid *ssid) 814 { 815 return wpa_config_write_cipher(ssid->group_cipher); 816 } 817 #endif /* NO_CONFIG_WRITE */ 818 819 820 static int wpa_config_parse_auth_alg(const struct parse_data *data, 821 struct wpa_ssid *ssid, int line, 822 const char *value) 823 { 824 int val = 0, last, errors = 0; 825 char *start, *end, *buf; 826 827 buf = os_strdup(value); 828 if (buf == NULL) 829 return -1; 830 start = buf; 831 832 while (*start != '\0') { 833 while (*start == ' ' || *start == '\t') 834 start++; 835 if (*start == '\0') 836 break; 837 end = start; 838 while (*end != ' ' && *end != '\t' && *end != '\0') 839 end++; 840 last = *end == '\0'; 841 *end = '\0'; 842 if (os_strcmp(start, "OPEN") == 0) 843 val |= WPA_AUTH_ALG_OPEN; 844 else if (os_strcmp(start, "SHARED") == 0) 845 val |= WPA_AUTH_ALG_SHARED; 846 else if (os_strcmp(start, "LEAP") == 0) 847 val |= WPA_AUTH_ALG_LEAP; 848 else { 849 wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'", 850 line, start); 851 errors++; 852 } 853 854 if (last) 855 break; 856 start = end + 1; 857 } 858 os_free(buf); 859 860 if (val == 0) { 861 wpa_printf(MSG_ERROR, 862 "Line %d: no auth_alg values configured.", line); 863 errors++; 864 } 865 866 wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val); 867 ssid->auth_alg = val; 868 return errors ? -1 : 0; 869 } 870 871 872 #ifndef NO_CONFIG_WRITE 873 static char * wpa_config_write_auth_alg(const struct parse_data *data, 874 struct wpa_ssid *ssid) 875 { 876 char *buf, *pos, *end; 877 int ret; 878 879 pos = buf = os_zalloc(30); 880 if (buf == NULL) 881 return NULL; 882 end = buf + 30; 883 884 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) { 885 ret = os_snprintf(pos, end - pos, "%sOPEN", 886 pos == buf ? "" : " "); 887 if (ret < 0 || ret >= end - pos) { 888 end[-1] = '\0'; 889 return buf; 890 } 891 pos += ret; 892 } 893 894 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) { 895 ret = os_snprintf(pos, end - pos, "%sSHARED", 896 pos == buf ? "" : " "); 897 if (ret < 0 || ret >= end - pos) { 898 end[-1] = '\0'; 899 return buf; 900 } 901 pos += ret; 902 } 903 904 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) { 905 ret = os_snprintf(pos, end - pos, "%sLEAP", 906 pos == buf ? "" : " "); 907 if (ret < 0 || ret >= end - pos) { 908 end[-1] = '\0'; 909 return buf; 910 } 911 pos += ret; 912 } 913 914 return buf; 915 } 916 #endif /* NO_CONFIG_WRITE */ 917 918 919 static int * wpa_config_parse_freqs(const struct parse_data *data, 920 struct wpa_ssid *ssid, int line, 921 const char *value) 922 { 923 int *freqs; 924 size_t used, len; 925 const char *pos; 926 927 used = 0; 928 len = 10; 929 freqs = os_calloc(len + 1, sizeof(int)); 930 if (freqs == NULL) 931 return NULL; 932 933 pos = value; 934 while (pos) { 935 while (*pos == ' ') 936 pos++; 937 if (used == len) { 938 int *n; 939 size_t i; 940 n = os_realloc_array(freqs, len * 2 + 1, sizeof(int)); 941 if (n == NULL) { 942 os_free(freqs); 943 return NULL; 944 } 945 for (i = len; i <= len * 2; i++) 946 n[i] = 0; 947 freqs = n; 948 len *= 2; 949 } 950 951 freqs[used] = atoi(pos); 952 if (freqs[used] == 0) 953 break; 954 used++; 955 pos = os_strchr(pos + 1, ' '); 956 } 957 958 return freqs; 959 } 960 961 962 static int wpa_config_parse_scan_freq(const struct parse_data *data, 963 struct wpa_ssid *ssid, int line, 964 const char *value) 965 { 966 int *freqs; 967 968 freqs = wpa_config_parse_freqs(data, ssid, line, value); 969 if (freqs == NULL) 970 return -1; 971 os_free(ssid->scan_freq); 972 ssid->scan_freq = freqs; 973 974 return 0; 975 } 976 977 978 static int wpa_config_parse_freq_list(const struct parse_data *data, 979 struct wpa_ssid *ssid, int line, 980 const char *value) 981 { 982 int *freqs; 983 984 freqs = wpa_config_parse_freqs(data, ssid, line, value); 985 if (freqs == NULL) 986 return -1; 987 os_free(ssid->freq_list); 988 ssid->freq_list = freqs; 989 990 return 0; 991 } 992 993 994 #ifndef NO_CONFIG_WRITE 995 static char * wpa_config_write_freqs(const struct parse_data *data, 996 const int *freqs) 997 { 998 char *buf, *pos, *end; 999 int i, ret; 1000 size_t count; 1001 1002 if (freqs == NULL) 1003 return NULL; 1004 1005 count = 0; 1006 for (i = 0; freqs[i]; i++) 1007 count++; 1008 1009 pos = buf = os_zalloc(10 * count + 1); 1010 if (buf == NULL) 1011 return NULL; 1012 end = buf + 10 * count + 1; 1013 1014 for (i = 0; freqs[i]; i++) { 1015 ret = os_snprintf(pos, end - pos, "%s%u", 1016 i == 0 ? "" : " ", freqs[i]); 1017 if (ret < 0 || ret >= end - pos) { 1018 end[-1] = '\0'; 1019 return buf; 1020 } 1021 pos += ret; 1022 } 1023 1024 return buf; 1025 } 1026 1027 1028 static char * wpa_config_write_scan_freq(const struct parse_data *data, 1029 struct wpa_ssid *ssid) 1030 { 1031 return wpa_config_write_freqs(data, ssid->scan_freq); 1032 } 1033 1034 1035 static char * wpa_config_write_freq_list(const struct parse_data *data, 1036 struct wpa_ssid *ssid) 1037 { 1038 return wpa_config_write_freqs(data, ssid->freq_list); 1039 } 1040 #endif /* NO_CONFIG_WRITE */ 1041 1042 1043 #ifdef IEEE8021X_EAPOL 1044 static int wpa_config_parse_eap(const struct parse_data *data, 1045 struct wpa_ssid *ssid, int line, 1046 const char *value) 1047 { 1048 int last, errors = 0; 1049 char *start, *end, *buf; 1050 struct eap_method_type *methods = NULL, *tmp; 1051 size_t num_methods = 0; 1052 1053 buf = os_strdup(value); 1054 if (buf == NULL) 1055 return -1; 1056 start = buf; 1057 1058 while (*start != '\0') { 1059 while (*start == ' ' || *start == '\t') 1060 start++; 1061 if (*start == '\0') 1062 break; 1063 end = start; 1064 while (*end != ' ' && *end != '\t' && *end != '\0') 1065 end++; 1066 last = *end == '\0'; 1067 *end = '\0'; 1068 tmp = methods; 1069 methods = os_realloc_array(methods, num_methods + 1, 1070 sizeof(*methods)); 1071 if (methods == NULL) { 1072 os_free(tmp); 1073 os_free(buf); 1074 return -1; 1075 } 1076 methods[num_methods].method = eap_peer_get_type( 1077 start, &methods[num_methods].vendor); 1078 if (methods[num_methods].vendor == EAP_VENDOR_IETF && 1079 methods[num_methods].method == EAP_TYPE_NONE) { 1080 wpa_printf(MSG_ERROR, "Line %d: unknown EAP method " 1081 "'%s'", line, start); 1082 wpa_printf(MSG_ERROR, "You may need to add support for" 1083 " this EAP method during wpa_supplicant\n" 1084 "build time configuration.\n" 1085 "See README for more information."); 1086 errors++; 1087 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF && 1088 methods[num_methods].method == EAP_TYPE_LEAP) 1089 ssid->leap++; 1090 else 1091 ssid->non_leap++; 1092 num_methods++; 1093 if (last) 1094 break; 1095 start = end + 1; 1096 } 1097 os_free(buf); 1098 1099 tmp = methods; 1100 methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods)); 1101 if (methods == NULL) { 1102 os_free(tmp); 1103 return -1; 1104 } 1105 methods[num_methods].vendor = EAP_VENDOR_IETF; 1106 methods[num_methods].method = EAP_TYPE_NONE; 1107 num_methods++; 1108 1109 wpa_hexdump(MSG_MSGDUMP, "eap methods", 1110 (u8 *) methods, num_methods * sizeof(*methods)); 1111 os_free(ssid->eap.eap_methods); 1112 ssid->eap.eap_methods = methods; 1113 return errors ? -1 : 0; 1114 } 1115 1116 1117 static char * wpa_config_write_eap(const struct parse_data *data, 1118 struct wpa_ssid *ssid) 1119 { 1120 int i, ret; 1121 char *buf, *pos, *end; 1122 const struct eap_method_type *eap_methods = ssid->eap.eap_methods; 1123 const char *name; 1124 1125 if (eap_methods == NULL) 1126 return NULL; 1127 1128 pos = buf = os_zalloc(100); 1129 if (buf == NULL) 1130 return NULL; 1131 end = buf + 100; 1132 1133 for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF || 1134 eap_methods[i].method != EAP_TYPE_NONE; i++) { 1135 name = eap_get_name(eap_methods[i].vendor, 1136 eap_methods[i].method); 1137 if (name) { 1138 ret = os_snprintf(pos, end - pos, "%s%s", 1139 pos == buf ? "" : " ", name); 1140 if (ret < 0 || ret >= end - pos) 1141 break; 1142 pos += ret; 1143 } 1144 } 1145 1146 end[-1] = '\0'; 1147 1148 return buf; 1149 } 1150 1151 1152 static int wpa_config_parse_password(const struct parse_data *data, 1153 struct wpa_ssid *ssid, int line, 1154 const char *value) 1155 { 1156 u8 *hash; 1157 1158 if (os_strcmp(value, "NULL") == 0) { 1159 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'"); 1160 os_free(ssid->eap.password); 1161 ssid->eap.password = NULL; 1162 ssid->eap.password_len = 0; 1163 return 0; 1164 } 1165 1166 #ifdef CONFIG_EXT_PASSWORD 1167 if (os_strncmp(value, "ext:", 4) == 0) { 1168 char *name = os_strdup(value + 4); 1169 if (name == NULL) 1170 return -1; 1171 os_free(ssid->eap.password); 1172 ssid->eap.password = (u8 *) name; 1173 ssid->eap.password_len = os_strlen(name); 1174 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH; 1175 ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD; 1176 return 0; 1177 } 1178 #endif /* CONFIG_EXT_PASSWORD */ 1179 1180 if (os_strncmp(value, "hash:", 5) != 0) { 1181 char *tmp; 1182 size_t res_len; 1183 1184 tmp = wpa_config_parse_string(value, &res_len); 1185 if (tmp == NULL) { 1186 wpa_printf(MSG_ERROR, "Line %d: failed to parse " 1187 "password.", line); 1188 return -1; 1189 } 1190 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name, 1191 (u8 *) tmp, res_len); 1192 1193 os_free(ssid->eap.password); 1194 ssid->eap.password = (u8 *) tmp; 1195 ssid->eap.password_len = res_len; 1196 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH; 1197 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD; 1198 1199 return 0; 1200 } 1201 1202 1203 /* NtPasswordHash: hash:<32 hex digits> */ 1204 if (os_strlen(value + 5) != 2 * 16) { 1205 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length " 1206 "(expected 32 hex digits)", line); 1207 return -1; 1208 } 1209 1210 hash = os_malloc(16); 1211 if (hash == NULL) 1212 return -1; 1213 1214 if (hexstr2bin(value + 5, hash, 16)) { 1215 os_free(hash); 1216 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line); 1217 return -1; 1218 } 1219 1220 wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16); 1221 1222 os_free(ssid->eap.password); 1223 ssid->eap.password = hash; 1224 ssid->eap.password_len = 16; 1225 ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH; 1226 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD; 1227 1228 return 0; 1229 } 1230 1231 1232 static char * wpa_config_write_password(const struct parse_data *data, 1233 struct wpa_ssid *ssid) 1234 { 1235 char *buf; 1236 1237 if (ssid->eap.password == NULL) 1238 return NULL; 1239 1240 #ifdef CONFIG_EXT_PASSWORD 1241 if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) { 1242 buf = os_zalloc(4 + ssid->eap.password_len + 1); 1243 if (buf == NULL) 1244 return NULL; 1245 os_memcpy(buf, "ext:", 4); 1246 os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len); 1247 return buf; 1248 } 1249 #endif /* CONFIG_EXT_PASSWORD */ 1250 1251 if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) { 1252 return wpa_config_write_string( 1253 ssid->eap.password, ssid->eap.password_len); 1254 } 1255 1256 buf = os_malloc(5 + 32 + 1); 1257 if (buf == NULL) 1258 return NULL; 1259 1260 os_memcpy(buf, "hash:", 5); 1261 wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16); 1262 1263 return buf; 1264 } 1265 #endif /* IEEE8021X_EAPOL */ 1266 1267 1268 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line, 1269 const char *value, int idx) 1270 { 1271 char *buf, title[20]; 1272 int res; 1273 1274 buf = wpa_config_parse_string(value, len); 1275 if (buf == NULL) { 1276 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.", 1277 line, idx, value); 1278 return -1; 1279 } 1280 if (*len > MAX_WEP_KEY_LEN) { 1281 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.", 1282 line, idx, value); 1283 os_free(buf); 1284 return -1; 1285 } 1286 if (*len && *len != 5 && *len != 13 && *len != 16) { 1287 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - " 1288 "this network block will be ignored", 1289 line, (unsigned int) *len); 1290 } 1291 os_memcpy(key, buf, *len); 1292 os_free(buf); 1293 res = os_snprintf(title, sizeof(title), "wep_key%d", idx); 1294 if (res >= 0 && (size_t) res < sizeof(title)) 1295 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len); 1296 return 0; 1297 } 1298 1299 1300 static int wpa_config_parse_wep_key0(const struct parse_data *data, 1301 struct wpa_ssid *ssid, int line, 1302 const char *value) 1303 { 1304 return wpa_config_parse_wep_key(ssid->wep_key[0], 1305 &ssid->wep_key_len[0], line, 1306 value, 0); 1307 } 1308 1309 1310 static int wpa_config_parse_wep_key1(const struct parse_data *data, 1311 struct wpa_ssid *ssid, int line, 1312 const char *value) 1313 { 1314 return wpa_config_parse_wep_key(ssid->wep_key[1], 1315 &ssid->wep_key_len[1], line, 1316 value, 1); 1317 } 1318 1319 1320 static int wpa_config_parse_wep_key2(const struct parse_data *data, 1321 struct wpa_ssid *ssid, int line, 1322 const char *value) 1323 { 1324 return wpa_config_parse_wep_key(ssid->wep_key[2], 1325 &ssid->wep_key_len[2], line, 1326 value, 2); 1327 } 1328 1329 1330 static int wpa_config_parse_wep_key3(const struct parse_data *data, 1331 struct wpa_ssid *ssid, int line, 1332 const char *value) 1333 { 1334 return wpa_config_parse_wep_key(ssid->wep_key[3], 1335 &ssid->wep_key_len[3], line, 1336 value, 3); 1337 } 1338 1339 1340 #ifndef NO_CONFIG_WRITE 1341 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx) 1342 { 1343 if (ssid->wep_key_len[idx] == 0) 1344 return NULL; 1345 return wpa_config_write_string(ssid->wep_key[idx], 1346 ssid->wep_key_len[idx]); 1347 } 1348 1349 1350 static char * wpa_config_write_wep_key0(const struct parse_data *data, 1351 struct wpa_ssid *ssid) 1352 { 1353 return wpa_config_write_wep_key(ssid, 0); 1354 } 1355 1356 1357 static char * wpa_config_write_wep_key1(const struct parse_data *data, 1358 struct wpa_ssid *ssid) 1359 { 1360 return wpa_config_write_wep_key(ssid, 1); 1361 } 1362 1363 1364 static char * wpa_config_write_wep_key2(const struct parse_data *data, 1365 struct wpa_ssid *ssid) 1366 { 1367 return wpa_config_write_wep_key(ssid, 2); 1368 } 1369 1370 1371 static char * wpa_config_write_wep_key3(const struct parse_data *data, 1372 struct wpa_ssid *ssid) 1373 { 1374 return wpa_config_write_wep_key(ssid, 3); 1375 } 1376 #endif /* NO_CONFIG_WRITE */ 1377 1378 1379 #ifdef CONFIG_P2P 1380 1381 static int wpa_config_parse_p2p_client_list(const struct parse_data *data, 1382 struct wpa_ssid *ssid, int line, 1383 const char *value) 1384 { 1385 const char *pos; 1386 u8 *buf, *n, addr[ETH_ALEN]; 1387 size_t count; 1388 1389 buf = NULL; 1390 count = 0; 1391 1392 pos = value; 1393 while (pos && *pos) { 1394 while (*pos == ' ') 1395 pos++; 1396 1397 if (hwaddr_aton(pos, addr)) { 1398 if (count == 0) { 1399 wpa_printf(MSG_ERROR, "Line %d: Invalid " 1400 "p2p_client_list address '%s'.", 1401 line, value); 1402 os_free(buf); 1403 return -1; 1404 } 1405 /* continue anyway since this could have been from a 1406 * truncated configuration file line */ 1407 wpa_printf(MSG_INFO, "Line %d: Ignore likely " 1408 "truncated p2p_client_list address '%s'", 1409 line, pos); 1410 } else { 1411 n = os_realloc_array(buf, count + 1, ETH_ALEN); 1412 if (n == NULL) { 1413 os_free(buf); 1414 return -1; 1415 } 1416 buf = n; 1417 os_memmove(buf + ETH_ALEN, buf, count * ETH_ALEN); 1418 os_memcpy(buf, addr, ETH_ALEN); 1419 count++; 1420 wpa_hexdump(MSG_MSGDUMP, "p2p_client_list", 1421 addr, ETH_ALEN); 1422 } 1423 1424 pos = os_strchr(pos, ' '); 1425 } 1426 1427 os_free(ssid->p2p_client_list); 1428 ssid->p2p_client_list = buf; 1429 ssid->num_p2p_clients = count; 1430 1431 return 0; 1432 } 1433 1434 1435 #ifndef NO_CONFIG_WRITE 1436 static char * wpa_config_write_p2p_client_list(const struct parse_data *data, 1437 struct wpa_ssid *ssid) 1438 { 1439 char *value, *end, *pos; 1440 int res; 1441 size_t i; 1442 1443 if (ssid->p2p_client_list == NULL || ssid->num_p2p_clients == 0) 1444 return NULL; 1445 1446 value = os_malloc(20 * ssid->num_p2p_clients); 1447 if (value == NULL) 1448 return NULL; 1449 pos = value; 1450 end = value + 20 * ssid->num_p2p_clients; 1451 1452 for (i = ssid->num_p2p_clients; i > 0; i--) { 1453 res = os_snprintf(pos, end - pos, MACSTR " ", 1454 MAC2STR(ssid->p2p_client_list + 1455 (i - 1) * ETH_ALEN)); 1456 if (res < 0 || res >= end - pos) { 1457 os_free(value); 1458 return NULL; 1459 } 1460 pos += res; 1461 } 1462 1463 if (pos > value) 1464 pos[-1] = '\0'; 1465 1466 return value; 1467 } 1468 #endif /* NO_CONFIG_WRITE */ 1469 1470 #endif /* CONFIG_P2P */ 1471 1472 /* Helper macros for network block parser */ 1473 1474 #ifdef OFFSET 1475 #undef OFFSET 1476 #endif /* OFFSET */ 1477 /* OFFSET: Get offset of a variable within the wpa_ssid structure */ 1478 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v) 1479 1480 /* STR: Define a string variable for an ASCII string; f = field name */ 1481 #ifdef NO_CONFIG_WRITE 1482 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f) 1483 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f) 1484 #else /* NO_CONFIG_WRITE */ 1485 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f) 1486 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f) 1487 #endif /* NO_CONFIG_WRITE */ 1488 #define STR(f) _STR(f), NULL, NULL, NULL, 0 1489 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0 1490 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1 1491 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1 1492 1493 /* STR_LEN: Define a string variable with a separate variable for storing the 1494 * data length. Unlike STR(), this can be used to store arbitrary binary data 1495 * (i.e., even nul termination character). */ 1496 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len) 1497 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len) 1498 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0 1499 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0 1500 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1 1501 1502 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length 1503 * explicitly specified. */ 1504 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max) 1505 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0 1506 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1 1507 1508 #ifdef NO_CONFIG_WRITE 1509 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0 1510 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0 1511 #else /* NO_CONFIG_WRITE */ 1512 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \ 1513 OFFSET(f), (void *) 0 1514 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \ 1515 OFFSET(eap.f), (void *) 0 1516 #endif /* NO_CONFIG_WRITE */ 1517 1518 /* INT: Define an integer variable */ 1519 #define INT(f) _INT(f), NULL, NULL, 0 1520 #define INTe(f) _INTe(f), NULL, NULL, 0 1521 1522 /* INT_RANGE: Define an integer variable with allowed value range */ 1523 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0 1524 1525 /* FUNC: Define a configuration variable that uses a custom function for 1526 * parsing and writing the value. */ 1527 #ifdef NO_CONFIG_WRITE 1528 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL 1529 #else /* NO_CONFIG_WRITE */ 1530 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \ 1531 NULL, NULL, NULL, NULL 1532 #endif /* NO_CONFIG_WRITE */ 1533 #define FUNC(f) _FUNC(f), 0 1534 #define FUNC_KEY(f) _FUNC(f), 1 1535 1536 /* 1537 * Table of network configuration variables. This table is used to parse each 1538 * network configuration variable, e.g., each line in wpa_supplicant.conf file 1539 * that is inside a network block. 1540 * 1541 * This table is generated using the helper macros defined above and with 1542 * generous help from the C pre-processor. The field name is stored as a string 1543 * into .name and for STR and INT types, the offset of the target buffer within 1544 * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar 1545 * offset to the field containing the length of the configuration variable. 1546 * .param3 and .param4 can be used to mark the allowed range (length for STR 1547 * and value for INT). 1548 * 1549 * For each configuration line in wpa_supplicant.conf, the parser goes through 1550 * this table and select the entry that matches with the field name. The parser 1551 * function (.parser) is then called to parse the actual value of the field. 1552 * 1553 * This kind of mechanism makes it easy to add new configuration parameters, 1554 * since only one line needs to be added into this table and into the 1555 * struct wpa_ssid definition if the new variable is either a string or 1556 * integer. More complex types will need to use their own parser and writer 1557 * functions. 1558 */ 1559 static const struct parse_data ssid_fields[] = { 1560 { STR_RANGE(ssid, 0, MAX_SSID_LEN) }, 1561 { INT_RANGE(scan_ssid, 0, 1) }, 1562 { FUNC(bssid) }, 1563 { FUNC_KEY(psk) }, 1564 { FUNC(proto) }, 1565 { FUNC(key_mgmt) }, 1566 { INT(bg_scan_period) }, 1567 { FUNC(pairwise) }, 1568 { FUNC(group) }, 1569 { FUNC(auth_alg) }, 1570 { FUNC(scan_freq) }, 1571 { FUNC(freq_list) }, 1572 #ifdef IEEE8021X_EAPOL 1573 { FUNC(eap) }, 1574 { STR_LENe(identity) }, 1575 { STR_LENe(anonymous_identity) }, 1576 { FUNC_KEY(password) }, 1577 { STRe(ca_cert) }, 1578 { STRe(ca_path) }, 1579 { STRe(client_cert) }, 1580 { STRe(private_key) }, 1581 { STR_KEYe(private_key_passwd) }, 1582 { STRe(dh_file) }, 1583 { STRe(subject_match) }, 1584 { STRe(altsubject_match) }, 1585 { STRe(ca_cert2) }, 1586 { STRe(ca_path2) }, 1587 { STRe(client_cert2) }, 1588 { STRe(private_key2) }, 1589 { STR_KEYe(private_key2_passwd) }, 1590 { STRe(dh_file2) }, 1591 { STRe(subject_match2) }, 1592 { STRe(altsubject_match2) }, 1593 { STRe(phase1) }, 1594 { STRe(phase2) }, 1595 { STRe(pcsc) }, 1596 { STR_KEYe(pin) }, 1597 { STRe(engine_id) }, 1598 { STRe(key_id) }, 1599 { STRe(cert_id) }, 1600 { STRe(ca_cert_id) }, 1601 { STR_KEYe(pin2) }, 1602 { STRe(engine2_id) }, 1603 { STRe(key2_id) }, 1604 { STRe(cert2_id) }, 1605 { STRe(ca_cert2_id) }, 1606 { INTe(engine) }, 1607 { INTe(engine2) }, 1608 { INT(eapol_flags) }, 1609 #endif /* IEEE8021X_EAPOL */ 1610 { FUNC_KEY(wep_key0) }, 1611 { FUNC_KEY(wep_key1) }, 1612 { FUNC_KEY(wep_key2) }, 1613 { FUNC_KEY(wep_key3) }, 1614 { INT(wep_tx_keyidx) }, 1615 { INT(priority) }, 1616 #ifdef IEEE8021X_EAPOL 1617 { INT(eap_workaround) }, 1618 { STRe(pac_file) }, 1619 { INTe(fragment_size) }, 1620 #endif /* IEEE8021X_EAPOL */ 1621 { INT_RANGE(mode, 0, 4) }, 1622 { INT_RANGE(proactive_key_caching, 0, 1) }, 1623 { INT_RANGE(disabled, 0, 2) }, 1624 { STR(id_str) }, 1625 #ifdef CONFIG_IEEE80211W 1626 { INT_RANGE(ieee80211w, 0, 2) }, 1627 #endif /* CONFIG_IEEE80211W */ 1628 { INT_RANGE(peerkey, 0, 1) }, 1629 { INT_RANGE(mixed_cell, 0, 1) }, 1630 { INT_RANGE(frequency, 0, 65000) }, 1631 { INT(wpa_ptk_rekey) }, 1632 { STR(bgscan) }, 1633 { INT_RANGE(ignore_broadcast_ssid, 0, 2) }, 1634 #ifdef CONFIG_P2P 1635 { FUNC(p2p_client_list) }, 1636 #endif /* CONFIG_P2P */ 1637 #ifdef CONFIG_HT_OVERRIDES 1638 { INT_RANGE(disable_ht, 0, 1) }, 1639 { INT_RANGE(disable_ht40, -1, 1) }, 1640 { INT_RANGE(disable_sgi, 0, 1) }, 1641 { INT_RANGE(disable_max_amsdu, -1, 1) }, 1642 { INT_RANGE(ampdu_factor, -1, 3) }, 1643 { INT_RANGE(ampdu_density, -1, 7) }, 1644 { STR(ht_mcs) }, 1645 #endif /* CONFIG_HT_OVERRIDES */ 1646 { INT(ap_max_inactivity) }, 1647 { INT(dtim_period) }, 1648 }; 1649 1650 #undef OFFSET 1651 #undef _STR 1652 #undef STR 1653 #undef STR_KEY 1654 #undef _STR_LEN 1655 #undef STR_LEN 1656 #undef STR_LEN_KEY 1657 #undef _STR_RANGE 1658 #undef STR_RANGE 1659 #undef STR_RANGE_KEY 1660 #undef _INT 1661 #undef INT 1662 #undef INT_RANGE 1663 #undef _FUNC 1664 #undef FUNC 1665 #undef FUNC_KEY 1666 #define NUM_SSID_FIELDS (sizeof(ssid_fields) / sizeof(ssid_fields[0])) 1667 1668 1669 /** 1670 * wpa_config_add_prio_network - Add a network to priority lists 1671 * @config: Configuration data from wpa_config_read() 1672 * @ssid: Pointer to the network configuration to be added to the list 1673 * Returns: 0 on success, -1 on failure 1674 * 1675 * This function is used to add a network block to the priority list of 1676 * networks. This must be called for each network when reading in the full 1677 * configuration. In addition, this can be used indirectly when updating 1678 * priorities by calling wpa_config_update_prio_list(). 1679 */ 1680 int wpa_config_add_prio_network(struct wpa_config *config, 1681 struct wpa_ssid *ssid) 1682 { 1683 int prio; 1684 struct wpa_ssid *prev, **nlist; 1685 1686 /* 1687 * Add to an existing priority list if one is available for the 1688 * configured priority level for this network. 1689 */ 1690 for (prio = 0; prio < config->num_prio; prio++) { 1691 prev = config->pssid[prio]; 1692 if (prev->priority == ssid->priority) { 1693 while (prev->pnext) 1694 prev = prev->pnext; 1695 prev->pnext = ssid; 1696 return 0; 1697 } 1698 } 1699 1700 /* First network for this priority - add a new priority list */ 1701 nlist = os_realloc_array(config->pssid, config->num_prio + 1, 1702 sizeof(struct wpa_ssid *)); 1703 if (nlist == NULL) 1704 return -1; 1705 1706 for (prio = 0; prio < config->num_prio; prio++) { 1707 if (nlist[prio]->priority < ssid->priority) { 1708 os_memmove(&nlist[prio + 1], &nlist[prio], 1709 (config->num_prio - prio) * 1710 sizeof(struct wpa_ssid *)); 1711 break; 1712 } 1713 } 1714 1715 nlist[prio] = ssid; 1716 config->num_prio++; 1717 config->pssid = nlist; 1718 1719 return 0; 1720 } 1721 1722 1723 /** 1724 * wpa_config_update_prio_list - Update network priority list 1725 * @config: Configuration data from wpa_config_read() 1726 * Returns: 0 on success, -1 on failure 1727 * 1728 * This function is called to update the priority list of networks in the 1729 * configuration when a network is being added or removed. This is also called 1730 * if a priority for a network is changed. 1731 */ 1732 int wpa_config_update_prio_list(struct wpa_config *config) 1733 { 1734 struct wpa_ssid *ssid; 1735 int ret = 0; 1736 1737 os_free(config->pssid); 1738 config->pssid = NULL; 1739 config->num_prio = 0; 1740 1741 ssid = config->ssid; 1742 while (ssid) { 1743 ssid->pnext = NULL; 1744 if (wpa_config_add_prio_network(config, ssid) < 0) 1745 ret = -1; 1746 ssid = ssid->next; 1747 } 1748 1749 return ret; 1750 } 1751 1752 1753 #ifdef IEEE8021X_EAPOL 1754 static void eap_peer_config_free(struct eap_peer_config *eap) 1755 { 1756 os_free(eap->eap_methods); 1757 os_free(eap->identity); 1758 os_free(eap->anonymous_identity); 1759 os_free(eap->password); 1760 os_free(eap->ca_cert); 1761 os_free(eap->ca_path); 1762 os_free(eap->client_cert); 1763 os_free(eap->private_key); 1764 os_free(eap->private_key_passwd); 1765 os_free(eap->dh_file); 1766 os_free(eap->subject_match); 1767 os_free(eap->altsubject_match); 1768 os_free(eap->ca_cert2); 1769 os_free(eap->ca_path2); 1770 os_free(eap->client_cert2); 1771 os_free(eap->private_key2); 1772 os_free(eap->private_key2_passwd); 1773 os_free(eap->dh_file2); 1774 os_free(eap->subject_match2); 1775 os_free(eap->altsubject_match2); 1776 os_free(eap->phase1); 1777 os_free(eap->phase2); 1778 os_free(eap->pcsc); 1779 os_free(eap->pin); 1780 os_free(eap->engine_id); 1781 os_free(eap->key_id); 1782 os_free(eap->cert_id); 1783 os_free(eap->ca_cert_id); 1784 os_free(eap->key2_id); 1785 os_free(eap->cert2_id); 1786 os_free(eap->ca_cert2_id); 1787 os_free(eap->pin2); 1788 os_free(eap->engine2_id); 1789 os_free(eap->otp); 1790 os_free(eap->pending_req_otp); 1791 os_free(eap->pac_file); 1792 os_free(eap->new_password); 1793 } 1794 #endif /* IEEE8021X_EAPOL */ 1795 1796 1797 /** 1798 * wpa_config_free_ssid - Free network/ssid configuration data 1799 * @ssid: Configuration data for the network 1800 * 1801 * This function frees all resources allocated for the network configuration 1802 * data. 1803 */ 1804 void wpa_config_free_ssid(struct wpa_ssid *ssid) 1805 { 1806 os_free(ssid->ssid); 1807 os_free(ssid->passphrase); 1808 os_free(ssid->ext_psk); 1809 #ifdef IEEE8021X_EAPOL 1810 eap_peer_config_free(&ssid->eap); 1811 #endif /* IEEE8021X_EAPOL */ 1812 os_free(ssid->id_str); 1813 os_free(ssid->scan_freq); 1814 os_free(ssid->freq_list); 1815 os_free(ssid->bgscan); 1816 os_free(ssid->p2p_client_list); 1817 #ifdef CONFIG_HT_OVERRIDES 1818 os_free(ssid->ht_mcs); 1819 #endif /* CONFIG_HT_OVERRIDES */ 1820 os_free(ssid); 1821 } 1822 1823 1824 void wpa_config_free_cred(struct wpa_cred *cred) 1825 { 1826 os_free(cred->realm); 1827 os_free(cred->username); 1828 os_free(cred->password); 1829 os_free(cred->ca_cert); 1830 os_free(cred->client_cert); 1831 os_free(cred->private_key); 1832 os_free(cred->private_key_passwd); 1833 os_free(cred->imsi); 1834 os_free(cred->milenage); 1835 os_free(cred->domain); 1836 os_free(cred->eap_method); 1837 os_free(cred->phase1); 1838 os_free(cred->phase2); 1839 os_free(cred->excluded_ssid); 1840 os_free(cred); 1841 } 1842 1843 1844 /** 1845 * wpa_config_free - Free configuration data 1846 * @config: Configuration data from wpa_config_read() 1847 * 1848 * This function frees all resources allocated for the configuration data by 1849 * wpa_config_read(). 1850 */ 1851 void wpa_config_free(struct wpa_config *config) 1852 { 1853 #ifndef CONFIG_NO_CONFIG_BLOBS 1854 struct wpa_config_blob *blob, *prevblob; 1855 #endif /* CONFIG_NO_CONFIG_BLOBS */ 1856 struct wpa_ssid *ssid, *prev = NULL; 1857 struct wpa_cred *cred, *cprev; 1858 1859 ssid = config->ssid; 1860 while (ssid) { 1861 prev = ssid; 1862 ssid = ssid->next; 1863 wpa_config_free_ssid(prev); 1864 } 1865 1866 cred = config->cred; 1867 while (cred) { 1868 cprev = cred; 1869 cred = cred->next; 1870 wpa_config_free_cred(cprev); 1871 } 1872 1873 #ifndef CONFIG_NO_CONFIG_BLOBS 1874 blob = config->blobs; 1875 prevblob = NULL; 1876 while (blob) { 1877 prevblob = blob; 1878 blob = blob->next; 1879 wpa_config_free_blob(prevblob); 1880 } 1881 #endif /* CONFIG_NO_CONFIG_BLOBS */ 1882 1883 wpabuf_free(config->wps_vendor_ext_m1); 1884 os_free(config->ctrl_interface); 1885 os_free(config->ctrl_interface_group); 1886 os_free(config->opensc_engine_path); 1887 os_free(config->pkcs11_engine_path); 1888 os_free(config->pkcs11_module_path); 1889 os_free(config->pcsc_reader); 1890 os_free(config->pcsc_pin); 1891 os_free(config->driver_param); 1892 os_free(config->device_name); 1893 os_free(config->manufacturer); 1894 os_free(config->model_name); 1895 os_free(config->model_number); 1896 os_free(config->serial_number); 1897 os_free(config->config_methods); 1898 os_free(config->p2p_ssid_postfix); 1899 os_free(config->pssid); 1900 os_free(config->p2p_pref_chan); 1901 os_free(config->autoscan); 1902 wpabuf_free(config->wps_nfc_dh_pubkey); 1903 wpabuf_free(config->wps_nfc_dh_privkey); 1904 wpabuf_free(config->wps_nfc_dev_pw); 1905 os_free(config->ext_password_backend); 1906 os_free(config); 1907 } 1908 1909 1910 /** 1911 * wpa_config_foreach_network - Iterate over each configured network 1912 * @config: Configuration data from wpa_config_read() 1913 * @func: Callback function to process each network 1914 * @arg: Opaque argument to pass to callback function 1915 * 1916 * Iterate over the set of configured networks calling the specified 1917 * function for each item. We guard against callbacks removing the 1918 * supplied network. 1919 */ 1920 void wpa_config_foreach_network(struct wpa_config *config, 1921 void (*func)(void *, struct wpa_ssid *), 1922 void *arg) 1923 { 1924 struct wpa_ssid *ssid, *next; 1925 1926 ssid = config->ssid; 1927 while (ssid) { 1928 next = ssid->next; 1929 func(arg, ssid); 1930 ssid = next; 1931 } 1932 } 1933 1934 1935 /** 1936 * wpa_config_get_network - Get configured network based on id 1937 * @config: Configuration data from wpa_config_read() 1938 * @id: Unique network id to search for 1939 * Returns: Network configuration or %NULL if not found 1940 */ 1941 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id) 1942 { 1943 struct wpa_ssid *ssid; 1944 1945 ssid = config->ssid; 1946 while (ssid) { 1947 if (id == ssid->id) 1948 break; 1949 ssid = ssid->next; 1950 } 1951 1952 return ssid; 1953 } 1954 1955 1956 /** 1957 * wpa_config_add_network - Add a new network with empty configuration 1958 * @config: Configuration data from wpa_config_read() 1959 * Returns: The new network configuration or %NULL if operation failed 1960 */ 1961 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config) 1962 { 1963 int id; 1964 struct wpa_ssid *ssid, *last = NULL; 1965 1966 id = -1; 1967 ssid = config->ssid; 1968 while (ssid) { 1969 if (ssid->id > id) 1970 id = ssid->id; 1971 last = ssid; 1972 ssid = ssid->next; 1973 } 1974 id++; 1975 1976 ssid = os_zalloc(sizeof(*ssid)); 1977 if (ssid == NULL) 1978 return NULL; 1979 ssid->id = id; 1980 if (last) 1981 last->next = ssid; 1982 else 1983 config->ssid = ssid; 1984 1985 wpa_config_update_prio_list(config); 1986 1987 return ssid; 1988 } 1989 1990 1991 /** 1992 * wpa_config_remove_network - Remove a configured network based on id 1993 * @config: Configuration data from wpa_config_read() 1994 * @id: Unique network id to search for 1995 * Returns: 0 on success, or -1 if the network was not found 1996 */ 1997 int wpa_config_remove_network(struct wpa_config *config, int id) 1998 { 1999 struct wpa_ssid *ssid, *prev = NULL; 2000 2001 ssid = config->ssid; 2002 while (ssid) { 2003 if (id == ssid->id) 2004 break; 2005 prev = ssid; 2006 ssid = ssid->next; 2007 } 2008 2009 if (ssid == NULL) 2010 return -1; 2011 2012 if (prev) 2013 prev->next = ssid->next; 2014 else 2015 config->ssid = ssid->next; 2016 2017 wpa_config_update_prio_list(config); 2018 wpa_config_free_ssid(ssid); 2019 return 0; 2020 } 2021 2022 2023 /** 2024 * wpa_config_set_network_defaults - Set network default values 2025 * @ssid: Pointer to network configuration data 2026 */ 2027 void wpa_config_set_network_defaults(struct wpa_ssid *ssid) 2028 { 2029 ssid->proto = DEFAULT_PROTO; 2030 ssid->pairwise_cipher = DEFAULT_PAIRWISE; 2031 ssid->group_cipher = DEFAULT_GROUP; 2032 ssid->key_mgmt = DEFAULT_KEY_MGMT; 2033 ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD; 2034 #ifdef IEEE8021X_EAPOL 2035 ssid->eapol_flags = DEFAULT_EAPOL_FLAGS; 2036 ssid->eap_workaround = DEFAULT_EAP_WORKAROUND; 2037 ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE; 2038 #endif /* IEEE8021X_EAPOL */ 2039 #ifdef CONFIG_HT_OVERRIDES 2040 ssid->disable_ht = DEFAULT_DISABLE_HT; 2041 ssid->disable_ht40 = DEFAULT_DISABLE_HT40; 2042 ssid->disable_sgi = DEFAULT_DISABLE_SGI; 2043 ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU; 2044 ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR; 2045 ssid->ampdu_density = DEFAULT_AMPDU_DENSITY; 2046 #endif /* CONFIG_HT_OVERRIDES */ 2047 ssid->proactive_key_caching = -1; 2048 #ifdef CONFIG_IEEE80211W 2049 ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT; 2050 #endif /* CONFIG_IEEE80211W */ 2051 } 2052 2053 2054 /** 2055 * wpa_config_set - Set a variable in network configuration 2056 * @ssid: Pointer to network configuration data 2057 * @var: Variable name, e.g., "ssid" 2058 * @value: Variable value 2059 * @line: Line number in configuration file or 0 if not used 2060 * Returns: 0 on success, -1 on failure 2061 * 2062 * This function can be used to set network configuration variables based on 2063 * both the configuration file and management interface input. The value 2064 * parameter must be in the same format as the text-based configuration file is 2065 * using. For example, strings are using double quotation marks. 2066 */ 2067 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value, 2068 int line) 2069 { 2070 size_t i; 2071 int ret = 0; 2072 2073 if (ssid == NULL || var == NULL || value == NULL) 2074 return -1; 2075 2076 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2077 const struct parse_data *field = &ssid_fields[i]; 2078 if (os_strcmp(var, field->name) != 0) 2079 continue; 2080 2081 if (field->parser(field, ssid, line, value)) { 2082 if (line) { 2083 wpa_printf(MSG_ERROR, "Line %d: failed to " 2084 "parse %s '%s'.", line, var, value); 2085 } 2086 ret = -1; 2087 } 2088 break; 2089 } 2090 if (i == NUM_SSID_FIELDS) { 2091 if (line) { 2092 wpa_printf(MSG_ERROR, "Line %d: unknown network field " 2093 "'%s'.", line, var); 2094 } 2095 ret = -1; 2096 } 2097 2098 return ret; 2099 } 2100 2101 2102 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var, 2103 const char *value) 2104 { 2105 size_t len; 2106 char *buf; 2107 int ret; 2108 2109 len = os_strlen(value); 2110 buf = os_malloc(len + 3); 2111 if (buf == NULL) 2112 return -1; 2113 buf[0] = '"'; 2114 os_memcpy(buf + 1, value, len); 2115 buf[len + 1] = '"'; 2116 buf[len + 2] = '\0'; 2117 ret = wpa_config_set(ssid, var, buf, 0); 2118 os_free(buf); 2119 return ret; 2120 } 2121 2122 2123 /** 2124 * wpa_config_get_all - Get all options from network configuration 2125 * @ssid: Pointer to network configuration data 2126 * @get_keys: Determines if keys/passwords will be included in returned list 2127 * (if they may be exported) 2128 * Returns: %NULL terminated list of all set keys and their values in the form 2129 * of [key1, val1, key2, val2, ... , NULL] 2130 * 2131 * This function can be used to get list of all configured network properties. 2132 * The caller is responsible for freeing the returned list and all its 2133 * elements. 2134 */ 2135 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys) 2136 { 2137 const struct parse_data *field; 2138 char *key, *value; 2139 size_t i; 2140 char **props; 2141 int fields_num; 2142 2143 get_keys = get_keys && ssid->export_keys; 2144 2145 props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *)); 2146 if (!props) 2147 return NULL; 2148 2149 fields_num = 0; 2150 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2151 field = &ssid_fields[i]; 2152 if (field->key_data && !get_keys) 2153 continue; 2154 value = field->writer(field, ssid); 2155 if (value == NULL) 2156 continue; 2157 if (os_strlen(value) == 0) { 2158 os_free(value); 2159 continue; 2160 } 2161 2162 key = os_strdup(field->name); 2163 if (key == NULL) { 2164 os_free(value); 2165 goto err; 2166 } 2167 2168 props[fields_num * 2] = key; 2169 props[fields_num * 2 + 1] = value; 2170 2171 fields_num++; 2172 } 2173 2174 return props; 2175 2176 err: 2177 value = *props; 2178 while (value) 2179 os_free(value++); 2180 os_free(props); 2181 return NULL; 2182 } 2183 2184 2185 #ifndef NO_CONFIG_WRITE 2186 /** 2187 * wpa_config_get - Get a variable in network configuration 2188 * @ssid: Pointer to network configuration data 2189 * @var: Variable name, e.g., "ssid" 2190 * Returns: Value of the variable or %NULL on failure 2191 * 2192 * This function can be used to get network configuration variables. The 2193 * returned value is a copy of the configuration variable in text format, i.e,. 2194 * the same format that the text-based configuration file and wpa_config_set() 2195 * are using for the value. The caller is responsible for freeing the returned 2196 * value. 2197 */ 2198 char * wpa_config_get(struct wpa_ssid *ssid, const char *var) 2199 { 2200 size_t i; 2201 2202 if (ssid == NULL || var == NULL) 2203 return NULL; 2204 2205 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2206 const struct parse_data *field = &ssid_fields[i]; 2207 if (os_strcmp(var, field->name) == 0) 2208 return field->writer(field, ssid); 2209 } 2210 2211 return NULL; 2212 } 2213 2214 2215 /** 2216 * wpa_config_get_no_key - Get a variable in network configuration (no keys) 2217 * @ssid: Pointer to network configuration data 2218 * @var: Variable name, e.g., "ssid" 2219 * Returns: Value of the variable or %NULL on failure 2220 * 2221 * This function can be used to get network configuration variable like 2222 * wpa_config_get(). The only difference is that this functions does not expose 2223 * key/password material from the configuration. In case a key/password field 2224 * is requested, the returned value is an empty string or %NULL if the variable 2225 * is not set or "*" if the variable is set (regardless of its value). The 2226 * returned value is a copy of the configuration variable in text format, i.e,. 2227 * the same format that the text-based configuration file and wpa_config_set() 2228 * are using for the value. The caller is responsible for freeing the returned 2229 * value. 2230 */ 2231 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var) 2232 { 2233 size_t i; 2234 2235 if (ssid == NULL || var == NULL) 2236 return NULL; 2237 2238 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2239 const struct parse_data *field = &ssid_fields[i]; 2240 if (os_strcmp(var, field->name) == 0) { 2241 char *res = field->writer(field, ssid); 2242 if (field->key_data) { 2243 if (res && res[0]) { 2244 wpa_printf(MSG_DEBUG, "Do not allow " 2245 "key_data field to be " 2246 "exposed"); 2247 os_free(res); 2248 return os_strdup("*"); 2249 } 2250 2251 os_free(res); 2252 return NULL; 2253 } 2254 return res; 2255 } 2256 } 2257 2258 return NULL; 2259 } 2260 #endif /* NO_CONFIG_WRITE */ 2261 2262 2263 /** 2264 * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID 2265 * @ssid: Pointer to network configuration data 2266 * 2267 * This function must be called to update WPA PSK when either SSID or the 2268 * passphrase has changed for the network configuration. 2269 */ 2270 void wpa_config_update_psk(struct wpa_ssid *ssid) 2271 { 2272 #ifndef CONFIG_NO_PBKDF2 2273 pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096, 2274 ssid->psk, PMK_LEN); 2275 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)", 2276 ssid->psk, PMK_LEN); 2277 ssid->psk_set = 1; 2278 #endif /* CONFIG_NO_PBKDF2 */ 2279 } 2280 2281 2282 int wpa_config_set_cred(struct wpa_cred *cred, const char *var, 2283 const char *value, int line) 2284 { 2285 char *val; 2286 size_t len; 2287 2288 if (os_strcmp(var, "priority") == 0) { 2289 cred->priority = atoi(value); 2290 return 0; 2291 } 2292 2293 if (os_strcmp(var, "pcsc") == 0) { 2294 cred->pcsc = atoi(value); 2295 return 0; 2296 } 2297 2298 if (os_strcmp(var, "eap") == 0) { 2299 struct eap_method_type method; 2300 method.method = eap_peer_get_type(value, &method.vendor); 2301 if (method.vendor == EAP_VENDOR_IETF && 2302 method.method == EAP_TYPE_NONE) { 2303 wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' " 2304 "for a credential", line, value); 2305 return -1; 2306 } 2307 os_free(cred->eap_method); 2308 cred->eap_method = os_malloc(sizeof(*cred->eap_method)); 2309 if (cred->eap_method == NULL) 2310 return -1; 2311 os_memcpy(cred->eap_method, &method, sizeof(method)); 2312 return 0; 2313 } 2314 2315 if (os_strcmp(var, "password") == 0 && 2316 os_strncmp(value, "ext:", 4) == 0) { 2317 os_free(cred->password); 2318 cred->password = os_strdup(value); 2319 cred->ext_password = 1; 2320 return 0; 2321 } 2322 2323 val = wpa_config_parse_string(value, &len); 2324 if (val == NULL) { 2325 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string " 2326 "value '%s'.", line, var, value); 2327 return -1; 2328 } 2329 2330 if (os_strcmp(var, "realm") == 0) { 2331 os_free(cred->realm); 2332 cred->realm = val; 2333 return 0; 2334 } 2335 2336 if (os_strcmp(var, "username") == 0) { 2337 os_free(cred->username); 2338 cred->username = val; 2339 return 0; 2340 } 2341 2342 if (os_strcmp(var, "password") == 0) { 2343 os_free(cred->password); 2344 cred->password = val; 2345 cred->ext_password = 0; 2346 return 0; 2347 } 2348 2349 if (os_strcmp(var, "ca_cert") == 0) { 2350 os_free(cred->ca_cert); 2351 cred->ca_cert = val; 2352 return 0; 2353 } 2354 2355 if (os_strcmp(var, "client_cert") == 0) { 2356 os_free(cred->client_cert); 2357 cred->client_cert = val; 2358 return 0; 2359 } 2360 2361 if (os_strcmp(var, "private_key") == 0) { 2362 os_free(cred->private_key); 2363 cred->private_key = val; 2364 return 0; 2365 } 2366 2367 if (os_strcmp(var, "private_key_passwd") == 0) { 2368 os_free(cred->private_key_passwd); 2369 cred->private_key_passwd = val; 2370 return 0; 2371 } 2372 2373 if (os_strcmp(var, "imsi") == 0) { 2374 os_free(cred->imsi); 2375 cred->imsi = val; 2376 return 0; 2377 } 2378 2379 if (os_strcmp(var, "milenage") == 0) { 2380 os_free(cred->milenage); 2381 cred->milenage = val; 2382 return 0; 2383 } 2384 2385 if (os_strcmp(var, "domain") == 0) { 2386 os_free(cred->domain); 2387 cred->domain = val; 2388 return 0; 2389 } 2390 2391 if (os_strcmp(var, "phase1") == 0) { 2392 os_free(cred->phase1); 2393 cred->phase1 = val; 2394 return 0; 2395 } 2396 2397 if (os_strcmp(var, "phase2") == 0) { 2398 os_free(cred->phase2); 2399 cred->phase2 = val; 2400 return 0; 2401 } 2402 2403 if (os_strcmp(var, "roaming_consortium") == 0) { 2404 if (len < 3 || len > sizeof(cred->roaming_consortium)) { 2405 wpa_printf(MSG_ERROR, "Line %d: invalid " 2406 "roaming_consortium length %d (3..15 " 2407 "expected)", line, (int) len); 2408 os_free(val); 2409 return -1; 2410 } 2411 os_memcpy(cred->roaming_consortium, val, len); 2412 cred->roaming_consortium_len = len; 2413 os_free(val); 2414 return 0; 2415 } 2416 2417 if (os_strcmp(var, "excluded_ssid") == 0) { 2418 struct excluded_ssid *e; 2419 2420 if (len > MAX_SSID_LEN) { 2421 wpa_printf(MSG_ERROR, "Line %d: invalid " 2422 "excluded_ssid length %d", line, (int) len); 2423 os_free(val); 2424 return -1; 2425 } 2426 2427 e = os_realloc_array(cred->excluded_ssid, 2428 cred->num_excluded_ssid + 1, 2429 sizeof(struct excluded_ssid)); 2430 if (e == NULL) { 2431 os_free(val); 2432 return -1; 2433 } 2434 cred->excluded_ssid = e; 2435 2436 e = &cred->excluded_ssid[cred->num_excluded_ssid++]; 2437 os_memcpy(e->ssid, val, len); 2438 e->ssid_len = len; 2439 2440 os_free(val); 2441 2442 return 0; 2443 } 2444 2445 if (line) { 2446 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.", 2447 line, var); 2448 } 2449 2450 os_free(val); 2451 2452 return -1; 2453 } 2454 2455 2456 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id) 2457 { 2458 struct wpa_cred *cred; 2459 2460 cred = config->cred; 2461 while (cred) { 2462 if (id == cred->id) 2463 break; 2464 cred = cred->next; 2465 } 2466 2467 return cred; 2468 } 2469 2470 2471 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config) 2472 { 2473 int id; 2474 struct wpa_cred *cred, *last = NULL; 2475 2476 id = -1; 2477 cred = config->cred; 2478 while (cred) { 2479 if (cred->id > id) 2480 id = cred->id; 2481 last = cred; 2482 cred = cred->next; 2483 } 2484 id++; 2485 2486 cred = os_zalloc(sizeof(*cred)); 2487 if (cred == NULL) 2488 return NULL; 2489 cred->id = id; 2490 if (last) 2491 last->next = cred; 2492 else 2493 config->cred = cred; 2494 2495 return cred; 2496 } 2497 2498 2499 int wpa_config_remove_cred(struct wpa_config *config, int id) 2500 { 2501 struct wpa_cred *cred, *prev = NULL; 2502 2503 cred = config->cred; 2504 while (cred) { 2505 if (id == cred->id) 2506 break; 2507 prev = cred; 2508 cred = cred->next; 2509 } 2510 2511 if (cred == NULL) 2512 return -1; 2513 2514 if (prev) 2515 prev->next = cred->next; 2516 else 2517 config->cred = cred->next; 2518 2519 wpa_config_free_cred(cred); 2520 return 0; 2521 } 2522 2523 2524 #ifndef CONFIG_NO_CONFIG_BLOBS 2525 /** 2526 * wpa_config_get_blob - Get a named configuration blob 2527 * @config: Configuration data from wpa_config_read() 2528 * @name: Name of the blob 2529 * Returns: Pointer to blob data or %NULL if not found 2530 */ 2531 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config, 2532 const char *name) 2533 { 2534 struct wpa_config_blob *blob = config->blobs; 2535 2536 while (blob) { 2537 if (os_strcmp(blob->name, name) == 0) 2538 return blob; 2539 blob = blob->next; 2540 } 2541 return NULL; 2542 } 2543 2544 2545 /** 2546 * wpa_config_set_blob - Set or add a named configuration blob 2547 * @config: Configuration data from wpa_config_read() 2548 * @blob: New value for the blob 2549 * 2550 * Adds a new configuration blob or replaces the current value of an existing 2551 * blob. 2552 */ 2553 void wpa_config_set_blob(struct wpa_config *config, 2554 struct wpa_config_blob *blob) 2555 { 2556 wpa_config_remove_blob(config, blob->name); 2557 blob->next = config->blobs; 2558 config->blobs = blob; 2559 } 2560 2561 2562 /** 2563 * wpa_config_free_blob - Free blob data 2564 * @blob: Pointer to blob to be freed 2565 */ 2566 void wpa_config_free_blob(struct wpa_config_blob *blob) 2567 { 2568 if (blob) { 2569 os_free(blob->name); 2570 os_free(blob->data); 2571 os_free(blob); 2572 } 2573 } 2574 2575 2576 /** 2577 * wpa_config_remove_blob - Remove a named configuration blob 2578 * @config: Configuration data from wpa_config_read() 2579 * @name: Name of the blob to remove 2580 * Returns: 0 if blob was removed or -1 if blob was not found 2581 */ 2582 int wpa_config_remove_blob(struct wpa_config *config, const char *name) 2583 { 2584 struct wpa_config_blob *pos = config->blobs, *prev = NULL; 2585 2586 while (pos) { 2587 if (os_strcmp(pos->name, name) == 0) { 2588 if (prev) 2589 prev->next = pos->next; 2590 else 2591 config->blobs = pos->next; 2592 wpa_config_free_blob(pos); 2593 return 0; 2594 } 2595 prev = pos; 2596 pos = pos->next; 2597 } 2598 2599 return -1; 2600 } 2601 #endif /* CONFIG_NO_CONFIG_BLOBS */ 2602 2603 2604 /** 2605 * wpa_config_alloc_empty - Allocate an empty configuration 2606 * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain 2607 * socket 2608 * @driver_param: Driver parameters 2609 * Returns: Pointer to allocated configuration data or %NULL on failure 2610 */ 2611 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface, 2612 const char *driver_param) 2613 { 2614 struct wpa_config *config; 2615 const int aCWmin = 4, aCWmax = 10; 2616 const struct hostapd_wmm_ac_params ac_bk = 2617 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */ 2618 const struct hostapd_wmm_ac_params ac_be = 2619 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */ 2620 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */ 2621 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 }; 2622 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */ 2623 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 }; 2624 2625 config = os_zalloc(sizeof(*config)); 2626 if (config == NULL) 2627 return NULL; 2628 config->eapol_version = DEFAULT_EAPOL_VERSION; 2629 config->ap_scan = DEFAULT_AP_SCAN; 2630 config->fast_reauth = DEFAULT_FAST_REAUTH; 2631 config->p2p_go_intent = DEFAULT_P2P_GO_INTENT; 2632 config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS; 2633 config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY; 2634 config->bss_max_count = DEFAULT_BSS_MAX_COUNT; 2635 config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE; 2636 config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT; 2637 config->max_num_sta = DEFAULT_MAX_NUM_STA; 2638 config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE; 2639 config->wmm_ac_params[0] = ac_be; 2640 config->wmm_ac_params[1] = ac_bk; 2641 config->wmm_ac_params[2] = ac_vi; 2642 config->wmm_ac_params[3] = ac_vo; 2643 2644 if (ctrl_interface) 2645 config->ctrl_interface = os_strdup(ctrl_interface); 2646 if (driver_param) 2647 config->driver_param = os_strdup(driver_param); 2648 2649 return config; 2650 } 2651 2652 2653 #ifndef CONFIG_NO_STDOUT_DEBUG 2654 /** 2655 * wpa_config_debug_dump_networks - Debug dump of configured networks 2656 * @config: Configuration data from wpa_config_read() 2657 */ 2658 void wpa_config_debug_dump_networks(struct wpa_config *config) 2659 { 2660 int prio; 2661 struct wpa_ssid *ssid; 2662 2663 for (prio = 0; prio < config->num_prio; prio++) { 2664 ssid = config->pssid[prio]; 2665 wpa_printf(MSG_DEBUG, "Priority group %d", 2666 ssid->priority); 2667 while (ssid) { 2668 wpa_printf(MSG_DEBUG, " id=%d ssid='%s'", 2669 ssid->id, 2670 wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 2671 ssid = ssid->pnext; 2672 } 2673 } 2674 } 2675 #endif /* CONFIG_NO_STDOUT_DEBUG */ 2676 2677 2678 struct global_parse_data { 2679 char *name; 2680 int (*parser)(const struct global_parse_data *data, 2681 struct wpa_config *config, int line, const char *value); 2682 void *param1, *param2, *param3; 2683 unsigned int changed_flag; 2684 }; 2685 2686 2687 static int wpa_global_config_parse_int(const struct global_parse_data *data, 2688 struct wpa_config *config, int line, 2689 const char *pos) 2690 { 2691 int *dst; 2692 dst = (int *) (((u8 *) config) + (long) data->param1); 2693 *dst = atoi(pos); 2694 wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst); 2695 2696 if (data->param2 && *dst < (long) data->param2) { 2697 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d " 2698 "min_value=%ld)", line, data->name, *dst, 2699 (long) data->param2); 2700 *dst = (long) data->param2; 2701 return -1; 2702 } 2703 2704 if (data->param3 && *dst > (long) data->param3) { 2705 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d " 2706 "max_value=%ld)", line, data->name, *dst, 2707 (long) data->param3); 2708 *dst = (long) data->param3; 2709 return -1; 2710 } 2711 2712 return 0; 2713 } 2714 2715 2716 static int wpa_global_config_parse_str(const struct global_parse_data *data, 2717 struct wpa_config *config, int line, 2718 const char *pos) 2719 { 2720 size_t len; 2721 char **dst, *tmp; 2722 2723 len = os_strlen(pos); 2724 if (data->param2 && len < (size_t) data->param2) { 2725 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu " 2726 "min_len=%ld)", line, data->name, 2727 (unsigned long) len, (long) data->param2); 2728 return -1; 2729 } 2730 2731 if (data->param3 && len > (size_t) data->param3) { 2732 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu " 2733 "max_len=%ld)", line, data->name, 2734 (unsigned long) len, (long) data->param3); 2735 return -1; 2736 } 2737 2738 tmp = os_strdup(pos); 2739 if (tmp == NULL) 2740 return -1; 2741 2742 dst = (char **) (((u8 *) config) + (long) data->param1); 2743 os_free(*dst); 2744 *dst = tmp; 2745 wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst); 2746 2747 return 0; 2748 } 2749 2750 2751 static int wpa_global_config_parse_bin(const struct global_parse_data *data, 2752 struct wpa_config *config, int line, 2753 const char *pos) 2754 { 2755 size_t len; 2756 struct wpabuf **dst, *tmp; 2757 2758 len = os_strlen(pos); 2759 if (len & 0x01) 2760 return -1; 2761 2762 tmp = wpabuf_alloc(len / 2); 2763 if (tmp == NULL) 2764 return -1; 2765 2766 if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) { 2767 wpabuf_free(tmp); 2768 return -1; 2769 } 2770 2771 dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1); 2772 wpabuf_free(*dst); 2773 *dst = tmp; 2774 wpa_printf(MSG_DEBUG, "%s", data->name); 2775 2776 return 0; 2777 } 2778 2779 2780 static int wpa_config_process_country(const struct global_parse_data *data, 2781 struct wpa_config *config, int line, 2782 const char *pos) 2783 { 2784 if (!pos[0] || !pos[1]) { 2785 wpa_printf(MSG_DEBUG, "Invalid country set"); 2786 return -1; 2787 } 2788 config->country[0] = pos[0]; 2789 config->country[1] = pos[1]; 2790 wpa_printf(MSG_DEBUG, "country='%c%c'", 2791 config->country[0], config->country[1]); 2792 return 0; 2793 } 2794 2795 2796 static int wpa_config_process_load_dynamic_eap( 2797 const struct global_parse_data *data, struct wpa_config *config, 2798 int line, const char *so) 2799 { 2800 int ret; 2801 wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so); 2802 ret = eap_peer_method_load(so); 2803 if (ret == -2) { 2804 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not " 2805 "reloading."); 2806 } else if (ret) { 2807 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP " 2808 "method '%s'.", line, so); 2809 return -1; 2810 } 2811 2812 return 0; 2813 } 2814 2815 2816 #ifdef CONFIG_WPS 2817 2818 static int wpa_config_process_uuid(const struct global_parse_data *data, 2819 struct wpa_config *config, int line, 2820 const char *pos) 2821 { 2822 char buf[40]; 2823 if (uuid_str2bin(pos, config->uuid)) { 2824 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line); 2825 return -1; 2826 } 2827 uuid_bin2str(config->uuid, buf, sizeof(buf)); 2828 wpa_printf(MSG_DEBUG, "uuid=%s", buf); 2829 return 0; 2830 } 2831 2832 2833 static int wpa_config_process_device_type( 2834 const struct global_parse_data *data, 2835 struct wpa_config *config, int line, const char *pos) 2836 { 2837 return wps_dev_type_str2bin(pos, config->device_type); 2838 } 2839 2840 2841 static int wpa_config_process_os_version(const struct global_parse_data *data, 2842 struct wpa_config *config, int line, 2843 const char *pos) 2844 { 2845 if (hexstr2bin(pos, config->os_version, 4)) { 2846 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line); 2847 return -1; 2848 } 2849 wpa_printf(MSG_DEBUG, "os_version=%08x", 2850 WPA_GET_BE32(config->os_version)); 2851 return 0; 2852 } 2853 2854 2855 static int wpa_config_process_wps_vendor_ext_m1( 2856 const struct global_parse_data *data, 2857 struct wpa_config *config, int line, const char *pos) 2858 { 2859 struct wpabuf *tmp; 2860 int len = os_strlen(pos) / 2; 2861 u8 *p; 2862 2863 if (!len) { 2864 wpa_printf(MSG_ERROR, "Line %d: " 2865 "invalid wps_vendor_ext_m1", line); 2866 return -1; 2867 } 2868 2869 tmp = wpabuf_alloc(len); 2870 if (tmp) { 2871 p = wpabuf_put(tmp, len); 2872 2873 if (hexstr2bin(pos, p, len)) { 2874 wpa_printf(MSG_ERROR, "Line %d: " 2875 "invalid wps_vendor_ext_m1", line); 2876 wpabuf_free(tmp); 2877 return -1; 2878 } 2879 2880 wpabuf_free(config->wps_vendor_ext_m1); 2881 config->wps_vendor_ext_m1 = tmp; 2882 } else { 2883 wpa_printf(MSG_ERROR, "Can not allocate " 2884 "memory for wps_vendor_ext_m1"); 2885 return -1; 2886 } 2887 2888 return 0; 2889 } 2890 2891 #endif /* CONFIG_WPS */ 2892 2893 #ifdef CONFIG_P2P 2894 static int wpa_config_process_sec_device_type( 2895 const struct global_parse_data *data, 2896 struct wpa_config *config, int line, const char *pos) 2897 { 2898 int idx; 2899 2900 if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) { 2901 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type " 2902 "items", line); 2903 return -1; 2904 } 2905 2906 idx = config->num_sec_device_types; 2907 2908 if (wps_dev_type_str2bin(pos, config->sec_device_type[idx])) 2909 return -1; 2910 2911 config->num_sec_device_types++; 2912 return 0; 2913 } 2914 2915 2916 static int wpa_config_process_p2p_pref_chan( 2917 const struct global_parse_data *data, 2918 struct wpa_config *config, int line, const char *pos) 2919 { 2920 struct p2p_channel *pref = NULL, *n; 2921 unsigned int num = 0; 2922 const char *pos2; 2923 u8 op_class, chan; 2924 2925 /* format: class:chan,class:chan,... */ 2926 2927 while (*pos) { 2928 op_class = atoi(pos); 2929 pos2 = os_strchr(pos, ':'); 2930 if (pos2 == NULL) 2931 goto fail; 2932 pos2++; 2933 chan = atoi(pos2); 2934 2935 n = os_realloc_array(pref, num + 1, 2936 sizeof(struct p2p_channel)); 2937 if (n == NULL) 2938 goto fail; 2939 pref = n; 2940 pref[num].op_class = op_class; 2941 pref[num].chan = chan; 2942 num++; 2943 2944 pos = os_strchr(pos2, ','); 2945 if (pos == NULL) 2946 break; 2947 pos++; 2948 } 2949 2950 os_free(config->p2p_pref_chan); 2951 config->p2p_pref_chan = pref; 2952 config->num_p2p_pref_chan = num; 2953 wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs", 2954 (u8 *) config->p2p_pref_chan, 2955 config->num_p2p_pref_chan * sizeof(struct p2p_channel)); 2956 2957 return 0; 2958 2959 fail: 2960 os_free(pref); 2961 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line); 2962 return -1; 2963 } 2964 #endif /* CONFIG_P2P */ 2965 2966 2967 static int wpa_config_process_hessid( 2968 const struct global_parse_data *data, 2969 struct wpa_config *config, int line, const char *pos) 2970 { 2971 if (hwaddr_aton2(pos, config->hessid) < 0) { 2972 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'", 2973 line, pos); 2974 return -1; 2975 } 2976 2977 return 0; 2978 } 2979 2980 2981 #ifdef OFFSET 2982 #undef OFFSET 2983 #endif /* OFFSET */ 2984 /* OFFSET: Get offset of a variable within the wpa_config structure */ 2985 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v) 2986 2987 #define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL 2988 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL 2989 #define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f) 2990 #define INT(f) _INT(f), NULL, NULL 2991 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max 2992 #define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f) 2993 #define STR(f) _STR(f), NULL, NULL 2994 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max 2995 #define BIN(f) #f, wpa_global_config_parse_bin, OFFSET(f), NULL, NULL 2996 2997 static const struct global_parse_data global_fields[] = { 2998 #ifdef CONFIG_CTRL_IFACE 2999 { STR(ctrl_interface), 0 }, 3000 { STR(ctrl_interface_group), 0 } /* deprecated */, 3001 #endif /* CONFIG_CTRL_IFACE */ 3002 { INT_RANGE(eapol_version, 1, 2), 0 }, 3003 { INT(ap_scan), 0 }, 3004 { INT(disable_scan_offload), 0 }, 3005 { INT(fast_reauth), 0 }, 3006 { STR(opensc_engine_path), 0 }, 3007 { STR(pkcs11_engine_path), 0 }, 3008 { STR(pkcs11_module_path), 0 }, 3009 { STR(pcsc_reader), 0 }, 3010 { STR(pcsc_pin), 0 }, 3011 { STR(driver_param), 0 }, 3012 { INT(dot11RSNAConfigPMKLifetime), 0 }, 3013 { INT(dot11RSNAConfigPMKReauthThreshold), 0 }, 3014 { INT(dot11RSNAConfigSATimeout), 0 }, 3015 #ifndef CONFIG_NO_CONFIG_WRITE 3016 { INT(update_config), 0 }, 3017 #endif /* CONFIG_NO_CONFIG_WRITE */ 3018 { FUNC_NO_VAR(load_dynamic_eap), 0 }, 3019 #ifdef CONFIG_WPS 3020 { FUNC(uuid), CFG_CHANGED_UUID }, 3021 { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME }, 3022 { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING }, 3023 { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING }, 3024 { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING }, 3025 { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING }, 3026 { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE }, 3027 { FUNC(os_version), CFG_CHANGED_OS_VERSION }, 3028 { STR(config_methods), CFG_CHANGED_CONFIG_METHODS }, 3029 { INT_RANGE(wps_cred_processing, 0, 2), 0 }, 3030 { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION }, 3031 #endif /* CONFIG_WPS */ 3032 #ifdef CONFIG_P2P 3033 { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE }, 3034 { INT(p2p_listen_reg_class), 0 }, 3035 { INT(p2p_listen_channel), 0 }, 3036 { INT(p2p_oper_reg_class), 0 }, 3037 { INT(p2p_oper_channel), 0 }, 3038 { INT_RANGE(p2p_go_intent, 0, 15), 0 }, 3039 { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX }, 3040 { INT_RANGE(persistent_reconnect, 0, 1), 0 }, 3041 { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS }, 3042 { INT(p2p_group_idle), 0 }, 3043 { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN }, 3044 { INT(p2p_go_ht40), 0 }, 3045 { INT(p2p_disabled), 0 }, 3046 { INT(p2p_no_group_iface), 0 }, 3047 #endif /* CONFIG_P2P */ 3048 { FUNC(country), CFG_CHANGED_COUNTRY }, 3049 { INT(bss_max_count), 0 }, 3050 { INT(bss_expiration_age), 0 }, 3051 { INT(bss_expiration_scan_count), 0 }, 3052 { INT_RANGE(filter_ssids, 0, 1), 0 }, 3053 { INT_RANGE(filter_rssi, -100, 0), 0 }, 3054 { INT(max_num_sta), 0 }, 3055 { INT_RANGE(disassoc_low_ack, 0, 1), 0 }, 3056 #ifdef CONFIG_HS20 3057 { INT_RANGE(hs20, 0, 1), 0 }, 3058 #endif /* CONFIG_HS20 */ 3059 { INT_RANGE(interworking, 0, 1), 0 }, 3060 { FUNC(hessid), 0 }, 3061 { INT_RANGE(access_network_type, 0, 15), 0 }, 3062 { INT_RANGE(pbc_in_m1, 0, 1), 0 }, 3063 { STR(autoscan), 0 }, 3064 { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff), 0 }, 3065 { BIN(wps_nfc_dh_pubkey), 0 }, 3066 { BIN(wps_nfc_dh_privkey), 0 }, 3067 { BIN(wps_nfc_dev_pw), 0 }, 3068 { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND }, 3069 { INT(p2p_go_max_inactivity), 0 }, 3070 { INT_RANGE(auto_interworking, 0, 1), 0 }, 3071 { INT(okc), 0 }, 3072 { INT(pmf), 0 }, 3073 }; 3074 3075 #undef FUNC 3076 #undef _INT 3077 #undef INT 3078 #undef INT_RANGE 3079 #undef _STR 3080 #undef STR 3081 #undef STR_RANGE 3082 #undef BIN 3083 #define NUM_GLOBAL_FIELDS (sizeof(global_fields) / sizeof(global_fields[0])) 3084 3085 3086 int wpa_config_process_global(struct wpa_config *config, char *pos, int line) 3087 { 3088 size_t i; 3089 int ret = 0; 3090 3091 for (i = 0; i < NUM_GLOBAL_FIELDS; i++) { 3092 const struct global_parse_data *field = &global_fields[i]; 3093 size_t flen = os_strlen(field->name); 3094 if (os_strncmp(pos, field->name, flen) != 0 || 3095 pos[flen] != '=') 3096 continue; 3097 3098 if (field->parser(field, config, line, pos + flen + 1)) { 3099 wpa_printf(MSG_ERROR, "Line %d: failed to " 3100 "parse '%s'.", line, pos); 3101 ret = -1; 3102 } 3103 config->changed_parameters |= field->changed_flag; 3104 break; 3105 } 3106 if (i == NUM_GLOBAL_FIELDS) { 3107 #ifdef CONFIG_AP 3108 if (os_strncmp(pos, "wmm_ac_", 7) == 0) { 3109 char *tmp = os_strchr(pos, '='); 3110 if (tmp == NULL) { 3111 if (line < 0) 3112 return -1; 3113 wpa_printf(MSG_ERROR, "Line %d: invalid line " 3114 "'%s'", line, pos); 3115 return -1; 3116 } 3117 *tmp++ = '\0'; 3118 if (hostapd_config_wmm_ac(config->wmm_ac_params, pos, 3119 tmp)) { 3120 wpa_printf(MSG_ERROR, "Line %d: invalid WMM " 3121 "AC item", line); 3122 return -1; 3123 } 3124 } 3125 #endif /* CONFIG_AP */ 3126 if (line < 0) 3127 return -1; 3128 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.", 3129 line, pos); 3130 ret = -1; 3131 } 3132 3133 return ret; 3134 } 3135