config.c revision a54fa5fb807eaeff45464139b5a7759f060cec68
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 */ 29struct 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 56static 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 103set: 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 116static 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 132static 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 145static 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 157static 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 177static 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 208static 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 230static 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 252static 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 275static 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 348static 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 375static 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 427static 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 459static 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 538static 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 630static int wpa_config_parse_cipher(int line, const char *value) 631{ 632 int val = wpa_parse_cipher(value); 633 if (val < 0) { 634 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.", 635 line, value); 636 return -1; 637 } 638 if (val == 0) { 639 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.", 640 line); 641 return -1; 642 } 643 return val; 644} 645 646 647#ifndef NO_CONFIG_WRITE 648static char * wpa_config_write_cipher(int cipher) 649{ 650 char *buf = os_zalloc(50); 651 if (buf == NULL) 652 return NULL; 653 654 if (wpa_write_ciphers(buf, buf + 50, cipher, " ") < 0) { 655 os_free(buf); 656 return NULL; 657 } 658 659 return buf; 660} 661#endif /* NO_CONFIG_WRITE */ 662 663 664static int wpa_config_parse_pairwise(const struct parse_data *data, 665 struct wpa_ssid *ssid, int line, 666 const char *value) 667{ 668 int val; 669 val = wpa_config_parse_cipher(line, value); 670 if (val == -1) 671 return -1; 672 if (val & ~WPA_ALLOWED_PAIRWISE_CIPHERS) { 673 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher " 674 "(0x%x).", line, val); 675 return -1; 676 } 677 678 wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val); 679 ssid->pairwise_cipher = val; 680 return 0; 681} 682 683 684#ifndef NO_CONFIG_WRITE 685static char * wpa_config_write_pairwise(const struct parse_data *data, 686 struct wpa_ssid *ssid) 687{ 688 return wpa_config_write_cipher(ssid->pairwise_cipher); 689} 690#endif /* NO_CONFIG_WRITE */ 691 692 693static int wpa_config_parse_group(const struct parse_data *data, 694 struct wpa_ssid *ssid, int line, 695 const char *value) 696{ 697 int val; 698 val = wpa_config_parse_cipher(line, value); 699 if (val == -1) 700 return -1; 701 if (val & ~WPA_ALLOWED_GROUP_CIPHERS) { 702 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher " 703 "(0x%x).", line, val); 704 return -1; 705 } 706 707 wpa_printf(MSG_MSGDUMP, "group: 0x%x", val); 708 ssid->group_cipher = val; 709 return 0; 710} 711 712 713#ifndef NO_CONFIG_WRITE 714static char * wpa_config_write_group(const struct parse_data *data, 715 struct wpa_ssid *ssid) 716{ 717 return wpa_config_write_cipher(ssid->group_cipher); 718} 719#endif /* NO_CONFIG_WRITE */ 720 721 722static int wpa_config_parse_auth_alg(const struct parse_data *data, 723 struct wpa_ssid *ssid, int line, 724 const char *value) 725{ 726 int val = 0, last, errors = 0; 727 char *start, *end, *buf; 728 729 buf = os_strdup(value); 730 if (buf == NULL) 731 return -1; 732 start = buf; 733 734 while (*start != '\0') { 735 while (*start == ' ' || *start == '\t') 736 start++; 737 if (*start == '\0') 738 break; 739 end = start; 740 while (*end != ' ' && *end != '\t' && *end != '\0') 741 end++; 742 last = *end == '\0'; 743 *end = '\0'; 744 if (os_strcmp(start, "OPEN") == 0) 745 val |= WPA_AUTH_ALG_OPEN; 746 else if (os_strcmp(start, "SHARED") == 0) 747 val |= WPA_AUTH_ALG_SHARED; 748 else if (os_strcmp(start, "LEAP") == 0) 749 val |= WPA_AUTH_ALG_LEAP; 750 else { 751 wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'", 752 line, start); 753 errors++; 754 } 755 756 if (last) 757 break; 758 start = end + 1; 759 } 760 os_free(buf); 761 762 if (val == 0) { 763 wpa_printf(MSG_ERROR, 764 "Line %d: no auth_alg values configured.", line); 765 errors++; 766 } 767 768 wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val); 769 ssid->auth_alg = val; 770 return errors ? -1 : 0; 771} 772 773 774#ifndef NO_CONFIG_WRITE 775static char * wpa_config_write_auth_alg(const struct parse_data *data, 776 struct wpa_ssid *ssid) 777{ 778 char *buf, *pos, *end; 779 int ret; 780 781 pos = buf = os_zalloc(30); 782 if (buf == NULL) 783 return NULL; 784 end = buf + 30; 785 786 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) { 787 ret = os_snprintf(pos, end - pos, "%sOPEN", 788 pos == buf ? "" : " "); 789 if (ret < 0 || ret >= end - pos) { 790 end[-1] = '\0'; 791 return buf; 792 } 793 pos += ret; 794 } 795 796 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) { 797 ret = os_snprintf(pos, end - pos, "%sSHARED", 798 pos == buf ? "" : " "); 799 if (ret < 0 || ret >= end - pos) { 800 end[-1] = '\0'; 801 return buf; 802 } 803 pos += ret; 804 } 805 806 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) { 807 ret = os_snprintf(pos, end - pos, "%sLEAP", 808 pos == buf ? "" : " "); 809 if (ret < 0 || ret >= end - pos) { 810 end[-1] = '\0'; 811 return buf; 812 } 813 pos += ret; 814 } 815 816 return buf; 817} 818#endif /* NO_CONFIG_WRITE */ 819 820 821static int * wpa_config_parse_int_array(const char *value) 822{ 823 int *freqs; 824 size_t used, len; 825 const char *pos; 826 827 used = 0; 828 len = 10; 829 freqs = os_calloc(len + 1, sizeof(int)); 830 if (freqs == NULL) 831 return NULL; 832 833 pos = value; 834 while (pos) { 835 while (*pos == ' ') 836 pos++; 837 if (used == len) { 838 int *n; 839 size_t i; 840 n = os_realloc_array(freqs, len * 2 + 1, sizeof(int)); 841 if (n == NULL) { 842 os_free(freqs); 843 return NULL; 844 } 845 for (i = len; i <= len * 2; i++) 846 n[i] = 0; 847 freqs = n; 848 len *= 2; 849 } 850 851 freqs[used] = atoi(pos); 852 if (freqs[used] == 0) 853 break; 854 used++; 855 pos = os_strchr(pos + 1, ' '); 856 } 857 858 return freqs; 859} 860 861 862static int wpa_config_parse_scan_freq(const struct parse_data *data, 863 struct wpa_ssid *ssid, int line, 864 const char *value) 865{ 866 int *freqs; 867 868 freqs = wpa_config_parse_int_array(value); 869 if (freqs == NULL) 870 return -1; 871 os_free(ssid->scan_freq); 872 ssid->scan_freq = freqs; 873 874 return 0; 875} 876 877 878static int wpa_config_parse_freq_list(const struct parse_data *data, 879 struct wpa_ssid *ssid, int line, 880 const char *value) 881{ 882 int *freqs; 883 884 freqs = wpa_config_parse_int_array(value); 885 if (freqs == NULL) 886 return -1; 887 os_free(ssid->freq_list); 888 ssid->freq_list = freqs; 889 890 return 0; 891} 892 893 894#ifndef NO_CONFIG_WRITE 895static char * wpa_config_write_freqs(const struct parse_data *data, 896 const int *freqs) 897{ 898 char *buf, *pos, *end; 899 int i, ret; 900 size_t count; 901 902 if (freqs == NULL) 903 return NULL; 904 905 count = 0; 906 for (i = 0; freqs[i]; i++) 907 count++; 908 909 pos = buf = os_zalloc(10 * count + 1); 910 if (buf == NULL) 911 return NULL; 912 end = buf + 10 * count + 1; 913 914 for (i = 0; freqs[i]; i++) { 915 ret = os_snprintf(pos, end - pos, "%s%u", 916 i == 0 ? "" : " ", freqs[i]); 917 if (ret < 0 || ret >= end - pos) { 918 end[-1] = '\0'; 919 return buf; 920 } 921 pos += ret; 922 } 923 924 return buf; 925} 926 927 928static char * wpa_config_write_scan_freq(const struct parse_data *data, 929 struct wpa_ssid *ssid) 930{ 931 return wpa_config_write_freqs(data, ssid->scan_freq); 932} 933 934 935static char * wpa_config_write_freq_list(const struct parse_data *data, 936 struct wpa_ssid *ssid) 937{ 938 return wpa_config_write_freqs(data, ssid->freq_list); 939} 940#endif /* NO_CONFIG_WRITE */ 941 942 943#ifdef IEEE8021X_EAPOL 944static int wpa_config_parse_eap(const struct parse_data *data, 945 struct wpa_ssid *ssid, int line, 946 const char *value) 947{ 948 int last, errors = 0; 949 char *start, *end, *buf; 950 struct eap_method_type *methods = NULL, *tmp; 951 size_t num_methods = 0; 952 953 buf = os_strdup(value); 954 if (buf == NULL) 955 return -1; 956 start = buf; 957 958 while (*start != '\0') { 959 while (*start == ' ' || *start == '\t') 960 start++; 961 if (*start == '\0') 962 break; 963 end = start; 964 while (*end != ' ' && *end != '\t' && *end != '\0') 965 end++; 966 last = *end == '\0'; 967 *end = '\0'; 968 tmp = methods; 969 methods = os_realloc_array(methods, num_methods + 1, 970 sizeof(*methods)); 971 if (methods == NULL) { 972 os_free(tmp); 973 os_free(buf); 974 return -1; 975 } 976 methods[num_methods].method = eap_peer_get_type( 977 start, &methods[num_methods].vendor); 978 if (methods[num_methods].vendor == EAP_VENDOR_IETF && 979 methods[num_methods].method == EAP_TYPE_NONE) { 980 wpa_printf(MSG_ERROR, "Line %d: unknown EAP method " 981 "'%s'", line, start); 982 wpa_printf(MSG_ERROR, "You may need to add support for" 983 " this EAP method during wpa_supplicant\n" 984 "build time configuration.\n" 985 "See README for more information."); 986 errors++; 987 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF && 988 methods[num_methods].method == EAP_TYPE_LEAP) 989 ssid->leap++; 990 else 991 ssid->non_leap++; 992 num_methods++; 993 if (last) 994 break; 995 start = end + 1; 996 } 997 os_free(buf); 998 999 tmp = methods; 1000 methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods)); 1001 if (methods == NULL) { 1002 os_free(tmp); 1003 return -1; 1004 } 1005 methods[num_methods].vendor = EAP_VENDOR_IETF; 1006 methods[num_methods].method = EAP_TYPE_NONE; 1007 num_methods++; 1008 1009 wpa_hexdump(MSG_MSGDUMP, "eap methods", 1010 (u8 *) methods, num_methods * sizeof(*methods)); 1011 os_free(ssid->eap.eap_methods); 1012 ssid->eap.eap_methods = methods; 1013 return errors ? -1 : 0; 1014} 1015 1016 1017static char * wpa_config_write_eap(const struct parse_data *data, 1018 struct wpa_ssid *ssid) 1019{ 1020 int i, ret; 1021 char *buf, *pos, *end; 1022 const struct eap_method_type *eap_methods = ssid->eap.eap_methods; 1023 const char *name; 1024 1025 if (eap_methods == NULL) 1026 return NULL; 1027 1028 pos = buf = os_zalloc(100); 1029 if (buf == NULL) 1030 return NULL; 1031 end = buf + 100; 1032 1033 for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF || 1034 eap_methods[i].method != EAP_TYPE_NONE; i++) { 1035 name = eap_get_name(eap_methods[i].vendor, 1036 eap_methods[i].method); 1037 if (name) { 1038 ret = os_snprintf(pos, end - pos, "%s%s", 1039 pos == buf ? "" : " ", name); 1040 if (ret < 0 || ret >= end - pos) 1041 break; 1042 pos += ret; 1043 } 1044 } 1045 1046 end[-1] = '\0'; 1047 1048 return buf; 1049} 1050 1051 1052static int wpa_config_parse_password(const struct parse_data *data, 1053 struct wpa_ssid *ssid, int line, 1054 const char *value) 1055{ 1056 u8 *hash; 1057 1058 if (os_strcmp(value, "NULL") == 0) { 1059 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'"); 1060 os_free(ssid->eap.password); 1061 ssid->eap.password = NULL; 1062 ssid->eap.password_len = 0; 1063 return 0; 1064 } 1065 1066#ifdef CONFIG_EXT_PASSWORD 1067 if (os_strncmp(value, "ext:", 4) == 0) { 1068 char *name = os_strdup(value + 4); 1069 if (name == NULL) 1070 return -1; 1071 os_free(ssid->eap.password); 1072 ssid->eap.password = (u8 *) name; 1073 ssid->eap.password_len = os_strlen(name); 1074 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH; 1075 ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD; 1076 return 0; 1077 } 1078#endif /* CONFIG_EXT_PASSWORD */ 1079 1080 if (os_strncmp(value, "hash:", 5) != 0) { 1081 char *tmp; 1082 size_t res_len; 1083 1084 tmp = wpa_config_parse_string(value, &res_len); 1085 if (tmp == NULL) { 1086 wpa_printf(MSG_ERROR, "Line %d: failed to parse " 1087 "password.", line); 1088 return -1; 1089 } 1090 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name, 1091 (u8 *) tmp, res_len); 1092 1093 os_free(ssid->eap.password); 1094 ssid->eap.password = (u8 *) tmp; 1095 ssid->eap.password_len = res_len; 1096 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH; 1097 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD; 1098 1099 return 0; 1100 } 1101 1102 1103 /* NtPasswordHash: hash:<32 hex digits> */ 1104 if (os_strlen(value + 5) != 2 * 16) { 1105 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length " 1106 "(expected 32 hex digits)", line); 1107 return -1; 1108 } 1109 1110 hash = os_malloc(16); 1111 if (hash == NULL) 1112 return -1; 1113 1114 if (hexstr2bin(value + 5, hash, 16)) { 1115 os_free(hash); 1116 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line); 1117 return -1; 1118 } 1119 1120 wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16); 1121 1122 os_free(ssid->eap.password); 1123 ssid->eap.password = hash; 1124 ssid->eap.password_len = 16; 1125 ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH; 1126 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD; 1127 1128 return 0; 1129} 1130 1131 1132static char * wpa_config_write_password(const struct parse_data *data, 1133 struct wpa_ssid *ssid) 1134{ 1135 char *buf; 1136 1137 if (ssid->eap.password == NULL) 1138 return NULL; 1139 1140#ifdef CONFIG_EXT_PASSWORD 1141 if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) { 1142 buf = os_zalloc(4 + ssid->eap.password_len + 1); 1143 if (buf == NULL) 1144 return NULL; 1145 os_memcpy(buf, "ext:", 4); 1146 os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len); 1147 return buf; 1148 } 1149#endif /* CONFIG_EXT_PASSWORD */ 1150 1151 if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) { 1152 return wpa_config_write_string( 1153 ssid->eap.password, ssid->eap.password_len); 1154 } 1155 1156 buf = os_malloc(5 + 32 + 1); 1157 if (buf == NULL) 1158 return NULL; 1159 1160 os_memcpy(buf, "hash:", 5); 1161 wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16); 1162 1163 return buf; 1164} 1165#endif /* IEEE8021X_EAPOL */ 1166 1167 1168static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line, 1169 const char *value, int idx) 1170{ 1171 char *buf, title[20]; 1172 int res; 1173 1174 buf = wpa_config_parse_string(value, len); 1175 if (buf == NULL) { 1176 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.", 1177 line, idx, value); 1178 return -1; 1179 } 1180 if (*len > MAX_WEP_KEY_LEN) { 1181 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.", 1182 line, idx, value); 1183 os_free(buf); 1184 return -1; 1185 } 1186 if (*len && *len != 5 && *len != 13 && *len != 16) { 1187 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - " 1188 "this network block will be ignored", 1189 line, (unsigned int) *len); 1190 } 1191 os_memcpy(key, buf, *len); 1192 os_free(buf); 1193 res = os_snprintf(title, sizeof(title), "wep_key%d", idx); 1194 if (res >= 0 && (size_t) res < sizeof(title)) 1195 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len); 1196 return 0; 1197} 1198 1199 1200static int wpa_config_parse_wep_key0(const struct parse_data *data, 1201 struct wpa_ssid *ssid, int line, 1202 const char *value) 1203{ 1204 return wpa_config_parse_wep_key(ssid->wep_key[0], 1205 &ssid->wep_key_len[0], line, 1206 value, 0); 1207} 1208 1209 1210static int wpa_config_parse_wep_key1(const struct parse_data *data, 1211 struct wpa_ssid *ssid, int line, 1212 const char *value) 1213{ 1214 return wpa_config_parse_wep_key(ssid->wep_key[1], 1215 &ssid->wep_key_len[1], line, 1216 value, 1); 1217} 1218 1219 1220static int wpa_config_parse_wep_key2(const struct parse_data *data, 1221 struct wpa_ssid *ssid, int line, 1222 const char *value) 1223{ 1224 return wpa_config_parse_wep_key(ssid->wep_key[2], 1225 &ssid->wep_key_len[2], line, 1226 value, 2); 1227} 1228 1229 1230static int wpa_config_parse_wep_key3(const struct parse_data *data, 1231 struct wpa_ssid *ssid, int line, 1232 const char *value) 1233{ 1234 return wpa_config_parse_wep_key(ssid->wep_key[3], 1235 &ssid->wep_key_len[3], line, 1236 value, 3); 1237} 1238 1239 1240#ifndef NO_CONFIG_WRITE 1241static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx) 1242{ 1243 if (ssid->wep_key_len[idx] == 0) 1244 return NULL; 1245 return wpa_config_write_string(ssid->wep_key[idx], 1246 ssid->wep_key_len[idx]); 1247} 1248 1249 1250static char * wpa_config_write_wep_key0(const struct parse_data *data, 1251 struct wpa_ssid *ssid) 1252{ 1253 return wpa_config_write_wep_key(ssid, 0); 1254} 1255 1256 1257static char * wpa_config_write_wep_key1(const struct parse_data *data, 1258 struct wpa_ssid *ssid) 1259{ 1260 return wpa_config_write_wep_key(ssid, 1); 1261} 1262 1263 1264static char * wpa_config_write_wep_key2(const struct parse_data *data, 1265 struct wpa_ssid *ssid) 1266{ 1267 return wpa_config_write_wep_key(ssid, 2); 1268} 1269 1270 1271static char * wpa_config_write_wep_key3(const struct parse_data *data, 1272 struct wpa_ssid *ssid) 1273{ 1274 return wpa_config_write_wep_key(ssid, 3); 1275} 1276#endif /* NO_CONFIG_WRITE */ 1277 1278 1279#ifdef CONFIG_P2P 1280 1281static int wpa_config_parse_p2p_client_list(const struct parse_data *data, 1282 struct wpa_ssid *ssid, int line, 1283 const char *value) 1284{ 1285 const char *pos; 1286 u8 *buf, *n, addr[ETH_ALEN]; 1287 size_t count; 1288 1289 buf = NULL; 1290 count = 0; 1291 1292 pos = value; 1293 while (pos && *pos) { 1294 while (*pos == ' ') 1295 pos++; 1296 1297 if (hwaddr_aton(pos, addr)) { 1298 if (count == 0) { 1299 wpa_printf(MSG_ERROR, "Line %d: Invalid " 1300 "p2p_client_list address '%s'.", 1301 line, value); 1302 os_free(buf); 1303 return -1; 1304 } 1305 /* continue anyway since this could have been from a 1306 * truncated configuration file line */ 1307 wpa_printf(MSG_INFO, "Line %d: Ignore likely " 1308 "truncated p2p_client_list address '%s'", 1309 line, pos); 1310 } else { 1311 n = os_realloc_array(buf, count + 1, ETH_ALEN); 1312 if (n == NULL) { 1313 os_free(buf); 1314 return -1; 1315 } 1316 buf = n; 1317 os_memmove(buf + ETH_ALEN, buf, count * ETH_ALEN); 1318 os_memcpy(buf, addr, ETH_ALEN); 1319 count++; 1320 wpa_hexdump(MSG_MSGDUMP, "p2p_client_list", 1321 addr, ETH_ALEN); 1322 } 1323 1324 pos = os_strchr(pos, ' '); 1325 } 1326 1327 os_free(ssid->p2p_client_list); 1328 ssid->p2p_client_list = buf; 1329 ssid->num_p2p_clients = count; 1330 1331 return 0; 1332} 1333 1334 1335#ifndef NO_CONFIG_WRITE 1336static char * wpa_config_write_p2p_client_list(const struct parse_data *data, 1337 struct wpa_ssid *ssid) 1338{ 1339 char *value, *end, *pos; 1340 int res; 1341 size_t i; 1342 1343 if (ssid->p2p_client_list == NULL || ssid->num_p2p_clients == 0) 1344 return NULL; 1345 1346 value = os_malloc(20 * ssid->num_p2p_clients); 1347 if (value == NULL) 1348 return NULL; 1349 pos = value; 1350 end = value + 20 * ssid->num_p2p_clients; 1351 1352 for (i = ssid->num_p2p_clients; i > 0; i--) { 1353 res = os_snprintf(pos, end - pos, MACSTR " ", 1354 MAC2STR(ssid->p2p_client_list + 1355 (i - 1) * ETH_ALEN)); 1356 if (res < 0 || res >= end - pos) { 1357 os_free(value); 1358 return NULL; 1359 } 1360 pos += res; 1361 } 1362 1363 if (pos > value) 1364 pos[-1] = '\0'; 1365 1366 return value; 1367} 1368#endif /* NO_CONFIG_WRITE */ 1369 1370#endif /* CONFIG_P2P */ 1371 1372/* Helper macros for network block parser */ 1373 1374#ifdef OFFSET 1375#undef OFFSET 1376#endif /* OFFSET */ 1377/* OFFSET: Get offset of a variable within the wpa_ssid structure */ 1378#define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v) 1379 1380/* STR: Define a string variable for an ASCII string; f = field name */ 1381#ifdef NO_CONFIG_WRITE 1382#define _STR(f) #f, wpa_config_parse_str, OFFSET(f) 1383#define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f) 1384#else /* NO_CONFIG_WRITE */ 1385#define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f) 1386#define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f) 1387#endif /* NO_CONFIG_WRITE */ 1388#define STR(f) _STR(f), NULL, NULL, NULL, 0 1389#define STRe(f) _STRe(f), NULL, NULL, NULL, 0 1390#define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1 1391#define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1 1392 1393/* STR_LEN: Define a string variable with a separate variable for storing the 1394 * data length. Unlike STR(), this can be used to store arbitrary binary data 1395 * (i.e., even nul termination character). */ 1396#define _STR_LEN(f) _STR(f), OFFSET(f ## _len) 1397#define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len) 1398#define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0 1399#define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0 1400#define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1 1401 1402/* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length 1403 * explicitly specified. */ 1404#define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max) 1405#define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0 1406#define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1 1407 1408#ifdef NO_CONFIG_WRITE 1409#define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0 1410#define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0 1411#else /* NO_CONFIG_WRITE */ 1412#define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \ 1413 OFFSET(f), (void *) 0 1414#define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \ 1415 OFFSET(eap.f), (void *) 0 1416#endif /* NO_CONFIG_WRITE */ 1417 1418/* INT: Define an integer variable */ 1419#define INT(f) _INT(f), NULL, NULL, 0 1420#define INTe(f) _INTe(f), NULL, NULL, 0 1421 1422/* INT_RANGE: Define an integer variable with allowed value range */ 1423#define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0 1424 1425/* FUNC: Define a configuration variable that uses a custom function for 1426 * parsing and writing the value. */ 1427#ifdef NO_CONFIG_WRITE 1428#define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL 1429#else /* NO_CONFIG_WRITE */ 1430#define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \ 1431 NULL, NULL, NULL, NULL 1432#endif /* NO_CONFIG_WRITE */ 1433#define FUNC(f) _FUNC(f), 0 1434#define FUNC_KEY(f) _FUNC(f), 1 1435 1436/* 1437 * Table of network configuration variables. This table is used to parse each 1438 * network configuration variable, e.g., each line in wpa_supplicant.conf file 1439 * that is inside a network block. 1440 * 1441 * This table is generated using the helper macros defined above and with 1442 * generous help from the C pre-processor. The field name is stored as a string 1443 * into .name and for STR and INT types, the offset of the target buffer within 1444 * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar 1445 * offset to the field containing the length of the configuration variable. 1446 * .param3 and .param4 can be used to mark the allowed range (length for STR 1447 * and value for INT). 1448 * 1449 * For each configuration line in wpa_supplicant.conf, the parser goes through 1450 * this table and select the entry that matches with the field name. The parser 1451 * function (.parser) is then called to parse the actual value of the field. 1452 * 1453 * This kind of mechanism makes it easy to add new configuration parameters, 1454 * since only one line needs to be added into this table and into the 1455 * struct wpa_ssid definition if the new variable is either a string or 1456 * integer. More complex types will need to use their own parser and writer 1457 * functions. 1458 */ 1459static const struct parse_data ssid_fields[] = { 1460 { STR_RANGE(ssid, 0, MAX_SSID_LEN) }, 1461 { INT_RANGE(scan_ssid, 0, 1) }, 1462 { FUNC(bssid) }, 1463 { FUNC_KEY(psk) }, 1464 { FUNC(proto) }, 1465 { FUNC(key_mgmt) }, 1466 { INT(bg_scan_period) }, 1467 { FUNC(pairwise) }, 1468 { FUNC(group) }, 1469 { FUNC(auth_alg) }, 1470 { FUNC(scan_freq) }, 1471 { FUNC(freq_list) }, 1472#ifdef IEEE8021X_EAPOL 1473 { FUNC(eap) }, 1474 { STR_LENe(identity) }, 1475 { STR_LENe(anonymous_identity) }, 1476 { FUNC_KEY(password) }, 1477 { STRe(ca_cert) }, 1478 { STRe(ca_path) }, 1479 { STRe(client_cert) }, 1480 { STRe(private_key) }, 1481 { STR_KEYe(private_key_passwd) }, 1482 { STRe(dh_file) }, 1483 { STRe(subject_match) }, 1484 { STRe(altsubject_match) }, 1485 { STRe(ca_cert2) }, 1486 { STRe(ca_path2) }, 1487 { STRe(client_cert2) }, 1488 { STRe(private_key2) }, 1489 { STR_KEYe(private_key2_passwd) }, 1490 { STRe(dh_file2) }, 1491 { STRe(subject_match2) }, 1492 { STRe(altsubject_match2) }, 1493 { STRe(phase1) }, 1494 { STRe(phase2) }, 1495 { STRe(pcsc) }, 1496 { STR_KEYe(pin) }, 1497 { STRe(engine_id) }, 1498 { STRe(key_id) }, 1499 { STRe(cert_id) }, 1500 { STRe(ca_cert_id) }, 1501 { STR_KEYe(pin2) }, 1502 { STRe(engine2_id) }, 1503 { STRe(key2_id) }, 1504 { STRe(cert2_id) }, 1505 { STRe(ca_cert2_id) }, 1506 { INTe(engine) }, 1507 { INTe(engine2) }, 1508 { INT(eapol_flags) }, 1509#endif /* IEEE8021X_EAPOL */ 1510 { FUNC_KEY(wep_key0) }, 1511 { FUNC_KEY(wep_key1) }, 1512 { FUNC_KEY(wep_key2) }, 1513 { FUNC_KEY(wep_key3) }, 1514 { INT(wep_tx_keyidx) }, 1515 { INT(priority) }, 1516#ifdef IEEE8021X_EAPOL 1517 { INT(eap_workaround) }, 1518 { STRe(pac_file) }, 1519 { INTe(fragment_size) }, 1520#endif /* IEEE8021X_EAPOL */ 1521 { INT_RANGE(mode, 0, 4) }, 1522 { INT_RANGE(proactive_key_caching, 0, 1) }, 1523 { INT_RANGE(disabled, 0, 2) }, 1524 { STR(id_str) }, 1525#ifdef CONFIG_IEEE80211W 1526 { INT_RANGE(ieee80211w, 0, 2) }, 1527#endif /* CONFIG_IEEE80211W */ 1528 { INT_RANGE(peerkey, 0, 1) }, 1529 { INT_RANGE(mixed_cell, 0, 1) }, 1530 { INT_RANGE(frequency, 0, 65000) }, 1531 { INT(wpa_ptk_rekey) }, 1532 { STR(bgscan) }, 1533 { INT_RANGE(ignore_broadcast_ssid, 0, 2) }, 1534#ifdef CONFIG_P2P 1535 { FUNC(p2p_client_list) }, 1536#endif /* CONFIG_P2P */ 1537#ifdef CONFIG_HT_OVERRIDES 1538 { INT_RANGE(disable_ht, 0, 1) }, 1539 { INT_RANGE(disable_ht40, -1, 1) }, 1540 { INT_RANGE(disable_sgi, 0, 1) }, 1541 { INT_RANGE(disable_max_amsdu, -1, 1) }, 1542 { INT_RANGE(ampdu_factor, -1, 3) }, 1543 { INT_RANGE(ampdu_density, -1, 7) }, 1544 { STR(ht_mcs) }, 1545#endif /* CONFIG_HT_OVERRIDES */ 1546 { INT(ap_max_inactivity) }, 1547 { INT(dtim_period) }, 1548}; 1549 1550#undef OFFSET 1551#undef _STR 1552#undef STR 1553#undef STR_KEY 1554#undef _STR_LEN 1555#undef STR_LEN 1556#undef STR_LEN_KEY 1557#undef _STR_RANGE 1558#undef STR_RANGE 1559#undef STR_RANGE_KEY 1560#undef _INT 1561#undef INT 1562#undef INT_RANGE 1563#undef _FUNC 1564#undef FUNC 1565#undef FUNC_KEY 1566#define NUM_SSID_FIELDS (sizeof(ssid_fields) / sizeof(ssid_fields[0])) 1567 1568 1569/** 1570 * wpa_config_add_prio_network - Add a network to priority lists 1571 * @config: Configuration data from wpa_config_read() 1572 * @ssid: Pointer to the network configuration to be added to the list 1573 * Returns: 0 on success, -1 on failure 1574 * 1575 * This function is used to add a network block to the priority list of 1576 * networks. This must be called for each network when reading in the full 1577 * configuration. In addition, this can be used indirectly when updating 1578 * priorities by calling wpa_config_update_prio_list(). 1579 */ 1580int wpa_config_add_prio_network(struct wpa_config *config, 1581 struct wpa_ssid *ssid) 1582{ 1583 int prio; 1584 struct wpa_ssid *prev, **nlist; 1585 1586 /* 1587 * Add to an existing priority list if one is available for the 1588 * configured priority level for this network. 1589 */ 1590 for (prio = 0; prio < config->num_prio; prio++) { 1591 prev = config->pssid[prio]; 1592 if (prev->priority == ssid->priority) { 1593 while (prev->pnext) 1594 prev = prev->pnext; 1595 prev->pnext = ssid; 1596 return 0; 1597 } 1598 } 1599 1600 /* First network for this priority - add a new priority list */ 1601 nlist = os_realloc_array(config->pssid, config->num_prio + 1, 1602 sizeof(struct wpa_ssid *)); 1603 if (nlist == NULL) 1604 return -1; 1605 1606 for (prio = 0; prio < config->num_prio; prio++) { 1607 if (nlist[prio]->priority < ssid->priority) { 1608 os_memmove(&nlist[prio + 1], &nlist[prio], 1609 (config->num_prio - prio) * 1610 sizeof(struct wpa_ssid *)); 1611 break; 1612 } 1613 } 1614 1615 nlist[prio] = ssid; 1616 config->num_prio++; 1617 config->pssid = nlist; 1618 1619 return 0; 1620} 1621 1622 1623/** 1624 * wpa_config_update_prio_list - Update network priority list 1625 * @config: Configuration data from wpa_config_read() 1626 * Returns: 0 on success, -1 on failure 1627 * 1628 * This function is called to update the priority list of networks in the 1629 * configuration when a network is being added or removed. This is also called 1630 * if a priority for a network is changed. 1631 */ 1632int wpa_config_update_prio_list(struct wpa_config *config) 1633{ 1634 struct wpa_ssid *ssid; 1635 int ret = 0; 1636 1637 os_free(config->pssid); 1638 config->pssid = NULL; 1639 config->num_prio = 0; 1640 1641 ssid = config->ssid; 1642 while (ssid) { 1643 ssid->pnext = NULL; 1644 if (wpa_config_add_prio_network(config, ssid) < 0) 1645 ret = -1; 1646 ssid = ssid->next; 1647 } 1648 1649 return ret; 1650} 1651 1652 1653#ifdef IEEE8021X_EAPOL 1654static void eap_peer_config_free(struct eap_peer_config *eap) 1655{ 1656 os_free(eap->eap_methods); 1657 os_free(eap->identity); 1658 os_free(eap->anonymous_identity); 1659 os_free(eap->password); 1660 os_free(eap->ca_cert); 1661 os_free(eap->ca_path); 1662 os_free(eap->client_cert); 1663 os_free(eap->private_key); 1664 os_free(eap->private_key_passwd); 1665 os_free(eap->dh_file); 1666 os_free(eap->subject_match); 1667 os_free(eap->altsubject_match); 1668 os_free(eap->ca_cert2); 1669 os_free(eap->ca_path2); 1670 os_free(eap->client_cert2); 1671 os_free(eap->private_key2); 1672 os_free(eap->private_key2_passwd); 1673 os_free(eap->dh_file2); 1674 os_free(eap->subject_match2); 1675 os_free(eap->altsubject_match2); 1676 os_free(eap->phase1); 1677 os_free(eap->phase2); 1678 os_free(eap->pcsc); 1679 os_free(eap->pin); 1680 os_free(eap->engine_id); 1681 os_free(eap->key_id); 1682 os_free(eap->cert_id); 1683 os_free(eap->ca_cert_id); 1684 os_free(eap->key2_id); 1685 os_free(eap->cert2_id); 1686 os_free(eap->ca_cert2_id); 1687 os_free(eap->pin2); 1688 os_free(eap->engine2_id); 1689 os_free(eap->otp); 1690 os_free(eap->pending_req_otp); 1691 os_free(eap->pac_file); 1692 os_free(eap->new_password); 1693} 1694#endif /* IEEE8021X_EAPOL */ 1695 1696 1697/** 1698 * wpa_config_free_ssid - Free network/ssid configuration data 1699 * @ssid: Configuration data for the network 1700 * 1701 * This function frees all resources allocated for the network configuration 1702 * data. 1703 */ 1704void wpa_config_free_ssid(struct wpa_ssid *ssid) 1705{ 1706 os_free(ssid->ssid); 1707 os_free(ssid->passphrase); 1708 os_free(ssid->ext_psk); 1709#ifdef IEEE8021X_EAPOL 1710 eap_peer_config_free(&ssid->eap); 1711#endif /* IEEE8021X_EAPOL */ 1712 os_free(ssid->id_str); 1713 os_free(ssid->scan_freq); 1714 os_free(ssid->freq_list); 1715 os_free(ssid->bgscan); 1716 os_free(ssid->p2p_client_list); 1717#ifdef CONFIG_HT_OVERRIDES 1718 os_free(ssid->ht_mcs); 1719#endif /* CONFIG_HT_OVERRIDES */ 1720 os_free(ssid); 1721} 1722 1723 1724void wpa_config_free_cred(struct wpa_cred *cred) 1725{ 1726 os_free(cred->realm); 1727 os_free(cred->username); 1728 os_free(cred->password); 1729 os_free(cred->ca_cert); 1730 os_free(cred->client_cert); 1731 os_free(cred->private_key); 1732 os_free(cred->private_key_passwd); 1733 os_free(cred->imsi); 1734 os_free(cred->milenage); 1735 os_free(cred->domain); 1736 os_free(cred->eap_method); 1737 os_free(cred->phase1); 1738 os_free(cred->phase2); 1739 os_free(cred->excluded_ssid); 1740 os_free(cred); 1741} 1742 1743 1744/** 1745 * wpa_config_free - Free configuration data 1746 * @config: Configuration data from wpa_config_read() 1747 * 1748 * This function frees all resources allocated for the configuration data by 1749 * wpa_config_read(). 1750 */ 1751void wpa_config_free(struct wpa_config *config) 1752{ 1753#ifndef CONFIG_NO_CONFIG_BLOBS 1754 struct wpa_config_blob *blob, *prevblob; 1755#endif /* CONFIG_NO_CONFIG_BLOBS */ 1756 struct wpa_ssid *ssid, *prev = NULL; 1757 struct wpa_cred *cred, *cprev; 1758 1759 ssid = config->ssid; 1760 while (ssid) { 1761 prev = ssid; 1762 ssid = ssid->next; 1763 wpa_config_free_ssid(prev); 1764 } 1765 1766 cred = config->cred; 1767 while (cred) { 1768 cprev = cred; 1769 cred = cred->next; 1770 wpa_config_free_cred(cprev); 1771 } 1772 1773#ifndef CONFIG_NO_CONFIG_BLOBS 1774 blob = config->blobs; 1775 prevblob = NULL; 1776 while (blob) { 1777 prevblob = blob; 1778 blob = blob->next; 1779 wpa_config_free_blob(prevblob); 1780 } 1781#endif /* CONFIG_NO_CONFIG_BLOBS */ 1782 1783 wpabuf_free(config->wps_vendor_ext_m1); 1784 os_free(config->ctrl_interface); 1785 os_free(config->ctrl_interface_group); 1786 os_free(config->opensc_engine_path); 1787 os_free(config->pkcs11_engine_path); 1788 os_free(config->pkcs11_module_path); 1789 os_free(config->pcsc_reader); 1790 os_free(config->pcsc_pin); 1791 os_free(config->driver_param); 1792 os_free(config->device_name); 1793 os_free(config->manufacturer); 1794 os_free(config->model_name); 1795 os_free(config->model_number); 1796 os_free(config->serial_number); 1797 os_free(config->config_methods); 1798 os_free(config->p2p_ssid_postfix); 1799 os_free(config->pssid); 1800 os_free(config->p2p_pref_chan); 1801 os_free(config->autoscan); 1802 wpabuf_free(config->wps_nfc_dh_pubkey); 1803 wpabuf_free(config->wps_nfc_dh_privkey); 1804 wpabuf_free(config->wps_nfc_dev_pw); 1805 os_free(config->ext_password_backend); 1806 os_free(config->sae_groups); 1807 os_free(config); 1808} 1809 1810 1811/** 1812 * wpa_config_foreach_network - Iterate over each configured network 1813 * @config: Configuration data from wpa_config_read() 1814 * @func: Callback function to process each network 1815 * @arg: Opaque argument to pass to callback function 1816 * 1817 * Iterate over the set of configured networks calling the specified 1818 * function for each item. We guard against callbacks removing the 1819 * supplied network. 1820 */ 1821void wpa_config_foreach_network(struct wpa_config *config, 1822 void (*func)(void *, struct wpa_ssid *), 1823 void *arg) 1824{ 1825 struct wpa_ssid *ssid, *next; 1826 1827 ssid = config->ssid; 1828 while (ssid) { 1829 next = ssid->next; 1830 func(arg, ssid); 1831 ssid = next; 1832 } 1833} 1834 1835 1836/** 1837 * wpa_config_get_network - Get configured network based on id 1838 * @config: Configuration data from wpa_config_read() 1839 * @id: Unique network id to search for 1840 * Returns: Network configuration or %NULL if not found 1841 */ 1842struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id) 1843{ 1844 struct wpa_ssid *ssid; 1845 1846 ssid = config->ssid; 1847 while (ssid) { 1848 if (id == ssid->id) 1849 break; 1850 ssid = ssid->next; 1851 } 1852 1853 return ssid; 1854} 1855 1856 1857/** 1858 * wpa_config_add_network - Add a new network with empty configuration 1859 * @config: Configuration data from wpa_config_read() 1860 * Returns: The new network configuration or %NULL if operation failed 1861 */ 1862struct wpa_ssid * wpa_config_add_network(struct wpa_config *config) 1863{ 1864 int id; 1865 struct wpa_ssid *ssid, *last = NULL; 1866 1867 id = -1; 1868 ssid = config->ssid; 1869 while (ssid) { 1870 if (ssid->id > id) 1871 id = ssid->id; 1872 last = ssid; 1873 ssid = ssid->next; 1874 } 1875 id++; 1876 1877 ssid = os_zalloc(sizeof(*ssid)); 1878 if (ssid == NULL) 1879 return NULL; 1880 ssid->id = id; 1881 if (last) 1882 last->next = ssid; 1883 else 1884 config->ssid = ssid; 1885 1886 wpa_config_update_prio_list(config); 1887 1888 return ssid; 1889} 1890 1891 1892/** 1893 * wpa_config_remove_network - Remove a configured network based on id 1894 * @config: Configuration data from wpa_config_read() 1895 * @id: Unique network id to search for 1896 * Returns: 0 on success, or -1 if the network was not found 1897 */ 1898int wpa_config_remove_network(struct wpa_config *config, int id) 1899{ 1900 struct wpa_ssid *ssid, *prev = NULL; 1901 1902 ssid = config->ssid; 1903 while (ssid) { 1904 if (id == ssid->id) 1905 break; 1906 prev = ssid; 1907 ssid = ssid->next; 1908 } 1909 1910 if (ssid == NULL) 1911 return -1; 1912 1913 if (prev) 1914 prev->next = ssid->next; 1915 else 1916 config->ssid = ssid->next; 1917 1918 wpa_config_update_prio_list(config); 1919 wpa_config_free_ssid(ssid); 1920 return 0; 1921} 1922 1923 1924/** 1925 * wpa_config_set_network_defaults - Set network default values 1926 * @ssid: Pointer to network configuration data 1927 */ 1928void wpa_config_set_network_defaults(struct wpa_ssid *ssid) 1929{ 1930 ssid->proto = DEFAULT_PROTO; 1931 ssid->pairwise_cipher = DEFAULT_PAIRWISE; 1932 ssid->group_cipher = DEFAULT_GROUP; 1933 ssid->key_mgmt = DEFAULT_KEY_MGMT; 1934 ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD; 1935#ifdef IEEE8021X_EAPOL 1936 ssid->eapol_flags = DEFAULT_EAPOL_FLAGS; 1937 ssid->eap_workaround = DEFAULT_EAP_WORKAROUND; 1938 ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE; 1939#endif /* IEEE8021X_EAPOL */ 1940#ifdef CONFIG_HT_OVERRIDES 1941 ssid->disable_ht = DEFAULT_DISABLE_HT; 1942 ssid->disable_ht40 = DEFAULT_DISABLE_HT40; 1943 ssid->disable_sgi = DEFAULT_DISABLE_SGI; 1944 ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU; 1945 ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR; 1946 ssid->ampdu_density = DEFAULT_AMPDU_DENSITY; 1947#endif /* CONFIG_HT_OVERRIDES */ 1948 ssid->proactive_key_caching = -1; 1949#ifdef CONFIG_IEEE80211W 1950 ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT; 1951#endif /* CONFIG_IEEE80211W */ 1952} 1953 1954 1955/** 1956 * wpa_config_set - Set a variable in network configuration 1957 * @ssid: Pointer to network configuration data 1958 * @var: Variable name, e.g., "ssid" 1959 * @value: Variable value 1960 * @line: Line number in configuration file or 0 if not used 1961 * Returns: 0 on success, -1 on failure 1962 * 1963 * This function can be used to set network configuration variables based on 1964 * both the configuration file and management interface input. The value 1965 * parameter must be in the same format as the text-based configuration file is 1966 * using. For example, strings are using double quotation marks. 1967 */ 1968int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value, 1969 int line) 1970{ 1971 size_t i; 1972 int ret = 0; 1973 1974 if (ssid == NULL || var == NULL || value == NULL) 1975 return -1; 1976 1977 for (i = 0; i < NUM_SSID_FIELDS; i++) { 1978 const struct parse_data *field = &ssid_fields[i]; 1979 if (os_strcmp(var, field->name) != 0) 1980 continue; 1981 1982 if (field->parser(field, ssid, line, value)) { 1983 if (line) { 1984 wpa_printf(MSG_ERROR, "Line %d: failed to " 1985 "parse %s '%s'.", line, var, value); 1986 } 1987 ret = -1; 1988 } 1989 break; 1990 } 1991 if (i == NUM_SSID_FIELDS) { 1992 if (line) { 1993 wpa_printf(MSG_ERROR, "Line %d: unknown network field " 1994 "'%s'.", line, var); 1995 } 1996 ret = -1; 1997 } 1998 1999 return ret; 2000} 2001 2002 2003int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var, 2004 const char *value) 2005{ 2006 size_t len; 2007 char *buf; 2008 int ret; 2009 2010 len = os_strlen(value); 2011 buf = os_malloc(len + 3); 2012 if (buf == NULL) 2013 return -1; 2014 buf[0] = '"'; 2015 os_memcpy(buf + 1, value, len); 2016 buf[len + 1] = '"'; 2017 buf[len + 2] = '\0'; 2018 ret = wpa_config_set(ssid, var, buf, 0); 2019 os_free(buf); 2020 return ret; 2021} 2022 2023 2024/** 2025 * wpa_config_get_all - Get all options from network configuration 2026 * @ssid: Pointer to network configuration data 2027 * @get_keys: Determines if keys/passwords will be included in returned list 2028 * (if they may be exported) 2029 * Returns: %NULL terminated list of all set keys and their values in the form 2030 * of [key1, val1, key2, val2, ... , NULL] 2031 * 2032 * This function can be used to get list of all configured network properties. 2033 * The caller is responsible for freeing the returned list and all its 2034 * elements. 2035 */ 2036char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys) 2037{ 2038 const struct parse_data *field; 2039 char *key, *value; 2040 size_t i; 2041 char **props; 2042 int fields_num; 2043 2044 get_keys = get_keys && ssid->export_keys; 2045 2046 props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *)); 2047 if (!props) 2048 return NULL; 2049 2050 fields_num = 0; 2051 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2052 field = &ssid_fields[i]; 2053 if (field->key_data && !get_keys) 2054 continue; 2055 value = field->writer(field, ssid); 2056 if (value == NULL) 2057 continue; 2058 if (os_strlen(value) == 0) { 2059 os_free(value); 2060 continue; 2061 } 2062 2063 key = os_strdup(field->name); 2064 if (key == NULL) { 2065 os_free(value); 2066 goto err; 2067 } 2068 2069 props[fields_num * 2] = key; 2070 props[fields_num * 2 + 1] = value; 2071 2072 fields_num++; 2073 } 2074 2075 return props; 2076 2077err: 2078 value = *props; 2079 while (value) 2080 os_free(value++); 2081 os_free(props); 2082 return NULL; 2083} 2084 2085 2086#ifndef NO_CONFIG_WRITE 2087/** 2088 * wpa_config_get - Get a variable in network configuration 2089 * @ssid: Pointer to network configuration data 2090 * @var: Variable name, e.g., "ssid" 2091 * Returns: Value of the variable or %NULL on failure 2092 * 2093 * This function can be used to get network configuration variables. The 2094 * returned value is a copy of the configuration variable in text format, i.e,. 2095 * the same format that the text-based configuration file and wpa_config_set() 2096 * are using for the value. The caller is responsible for freeing the returned 2097 * value. 2098 */ 2099char * wpa_config_get(struct wpa_ssid *ssid, const char *var) 2100{ 2101 size_t i; 2102 2103 if (ssid == NULL || var == NULL) 2104 return NULL; 2105 2106 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2107 const struct parse_data *field = &ssid_fields[i]; 2108 if (os_strcmp(var, field->name) == 0) 2109 return field->writer(field, ssid); 2110 } 2111 2112 return NULL; 2113} 2114 2115 2116/** 2117 * wpa_config_get_no_key - Get a variable in network configuration (no keys) 2118 * @ssid: Pointer to network configuration data 2119 * @var: Variable name, e.g., "ssid" 2120 * Returns: Value of the variable or %NULL on failure 2121 * 2122 * This function can be used to get network configuration variable like 2123 * wpa_config_get(). The only difference is that this functions does not expose 2124 * key/password material from the configuration. In case a key/password field 2125 * is requested, the returned value is an empty string or %NULL if the variable 2126 * is not set or "*" if the variable is set (regardless of its value). The 2127 * returned value is a copy of the configuration variable in text format, i.e,. 2128 * the same format that the text-based configuration file and wpa_config_set() 2129 * are using for the value. The caller is responsible for freeing the returned 2130 * value. 2131 */ 2132char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var) 2133{ 2134 size_t i; 2135 2136 if (ssid == NULL || var == NULL) 2137 return NULL; 2138 2139 for (i = 0; i < NUM_SSID_FIELDS; i++) { 2140 const struct parse_data *field = &ssid_fields[i]; 2141 if (os_strcmp(var, field->name) == 0) { 2142 char *res = field->writer(field, ssid); 2143 if (field->key_data) { 2144 if (res && res[0]) { 2145 wpa_printf(MSG_DEBUG, "Do not allow " 2146 "key_data field to be " 2147 "exposed"); 2148 os_free(res); 2149 return os_strdup("*"); 2150 } 2151 2152 os_free(res); 2153 return NULL; 2154 } 2155 return res; 2156 } 2157 } 2158 2159 return NULL; 2160} 2161#endif /* NO_CONFIG_WRITE */ 2162 2163 2164/** 2165 * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID 2166 * @ssid: Pointer to network configuration data 2167 * 2168 * This function must be called to update WPA PSK when either SSID or the 2169 * passphrase has changed for the network configuration. 2170 */ 2171void wpa_config_update_psk(struct wpa_ssid *ssid) 2172{ 2173#ifndef CONFIG_NO_PBKDF2 2174 pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096, 2175 ssid->psk, PMK_LEN); 2176 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)", 2177 ssid->psk, PMK_LEN); 2178 ssid->psk_set = 1; 2179#endif /* CONFIG_NO_PBKDF2 */ 2180} 2181 2182 2183int wpa_config_set_cred(struct wpa_cred *cred, const char *var, 2184 const char *value, int line) 2185{ 2186 char *val; 2187 size_t len; 2188 2189 if (os_strcmp(var, "priority") == 0) { 2190 cred->priority = atoi(value); 2191 return 0; 2192 } 2193 2194 if (os_strcmp(var, "pcsc") == 0) { 2195 cred->pcsc = atoi(value); 2196 return 0; 2197 } 2198 2199 if (os_strcmp(var, "eap") == 0) { 2200 struct eap_method_type method; 2201 method.method = eap_peer_get_type(value, &method.vendor); 2202 if (method.vendor == EAP_VENDOR_IETF && 2203 method.method == EAP_TYPE_NONE) { 2204 wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' " 2205 "for a credential", line, value); 2206 return -1; 2207 } 2208 os_free(cred->eap_method); 2209 cred->eap_method = os_malloc(sizeof(*cred->eap_method)); 2210 if (cred->eap_method == NULL) 2211 return -1; 2212 os_memcpy(cred->eap_method, &method, sizeof(method)); 2213 return 0; 2214 } 2215 2216 if (os_strcmp(var, "password") == 0 && 2217 os_strncmp(value, "ext:", 4) == 0) { 2218 os_free(cred->password); 2219 cred->password = os_strdup(value); 2220 cred->ext_password = 1; 2221 return 0; 2222 } 2223 2224 val = wpa_config_parse_string(value, &len); 2225 if (val == NULL) { 2226 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string " 2227 "value '%s'.", line, var, value); 2228 return -1; 2229 } 2230 2231 if (os_strcmp(var, "realm") == 0) { 2232 os_free(cred->realm); 2233 cred->realm = val; 2234 return 0; 2235 } 2236 2237 if (os_strcmp(var, "username") == 0) { 2238 os_free(cred->username); 2239 cred->username = val; 2240 return 0; 2241 } 2242 2243 if (os_strcmp(var, "password") == 0) { 2244 os_free(cred->password); 2245 cred->password = val; 2246 cred->ext_password = 0; 2247 return 0; 2248 } 2249 2250 if (os_strcmp(var, "ca_cert") == 0) { 2251 os_free(cred->ca_cert); 2252 cred->ca_cert = val; 2253 return 0; 2254 } 2255 2256 if (os_strcmp(var, "client_cert") == 0) { 2257 os_free(cred->client_cert); 2258 cred->client_cert = val; 2259 return 0; 2260 } 2261 2262 if (os_strcmp(var, "private_key") == 0) { 2263 os_free(cred->private_key); 2264 cred->private_key = val; 2265 return 0; 2266 } 2267 2268 if (os_strcmp(var, "private_key_passwd") == 0) { 2269 os_free(cred->private_key_passwd); 2270 cred->private_key_passwd = val; 2271 return 0; 2272 } 2273 2274 if (os_strcmp(var, "imsi") == 0) { 2275 os_free(cred->imsi); 2276 cred->imsi = val; 2277 return 0; 2278 } 2279 2280 if (os_strcmp(var, "milenage") == 0) { 2281 os_free(cred->milenage); 2282 cred->milenage = val; 2283 return 0; 2284 } 2285 2286 if (os_strcmp(var, "domain") == 0) { 2287 os_free(cred->domain); 2288 cred->domain = val; 2289 return 0; 2290 } 2291 2292 if (os_strcmp(var, "phase1") == 0) { 2293 os_free(cred->phase1); 2294 cred->phase1 = val; 2295 return 0; 2296 } 2297 2298 if (os_strcmp(var, "phase2") == 0) { 2299 os_free(cred->phase2); 2300 cred->phase2 = val; 2301 return 0; 2302 } 2303 2304 if (os_strcmp(var, "roaming_consortium") == 0) { 2305 if (len < 3 || len > sizeof(cred->roaming_consortium)) { 2306 wpa_printf(MSG_ERROR, "Line %d: invalid " 2307 "roaming_consortium length %d (3..15 " 2308 "expected)", line, (int) len); 2309 os_free(val); 2310 return -1; 2311 } 2312 os_memcpy(cred->roaming_consortium, val, len); 2313 cred->roaming_consortium_len = len; 2314 os_free(val); 2315 return 0; 2316 } 2317 2318 if (os_strcmp(var, "excluded_ssid") == 0) { 2319 struct excluded_ssid *e; 2320 2321 if (len > MAX_SSID_LEN) { 2322 wpa_printf(MSG_ERROR, "Line %d: invalid " 2323 "excluded_ssid length %d", line, (int) len); 2324 os_free(val); 2325 return -1; 2326 } 2327 2328 e = os_realloc_array(cred->excluded_ssid, 2329 cred->num_excluded_ssid + 1, 2330 sizeof(struct excluded_ssid)); 2331 if (e == NULL) { 2332 os_free(val); 2333 return -1; 2334 } 2335 cred->excluded_ssid = e; 2336 2337 e = &cred->excluded_ssid[cred->num_excluded_ssid++]; 2338 os_memcpy(e->ssid, val, len); 2339 e->ssid_len = len; 2340 2341 os_free(val); 2342 2343 return 0; 2344 } 2345 2346 if (line) { 2347 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.", 2348 line, var); 2349 } 2350 2351 os_free(val); 2352 2353 return -1; 2354} 2355 2356 2357struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id) 2358{ 2359 struct wpa_cred *cred; 2360 2361 cred = config->cred; 2362 while (cred) { 2363 if (id == cred->id) 2364 break; 2365 cred = cred->next; 2366 } 2367 2368 return cred; 2369} 2370 2371 2372struct wpa_cred * wpa_config_add_cred(struct wpa_config *config) 2373{ 2374 int id; 2375 struct wpa_cred *cred, *last = NULL; 2376 2377 id = -1; 2378 cred = config->cred; 2379 while (cred) { 2380 if (cred->id > id) 2381 id = cred->id; 2382 last = cred; 2383 cred = cred->next; 2384 } 2385 id++; 2386 2387 cred = os_zalloc(sizeof(*cred)); 2388 if (cred == NULL) 2389 return NULL; 2390 cred->id = id; 2391 if (last) 2392 last->next = cred; 2393 else 2394 config->cred = cred; 2395 2396 return cred; 2397} 2398 2399 2400int wpa_config_remove_cred(struct wpa_config *config, int id) 2401{ 2402 struct wpa_cred *cred, *prev = NULL; 2403 2404 cred = config->cred; 2405 while (cred) { 2406 if (id == cred->id) 2407 break; 2408 prev = cred; 2409 cred = cred->next; 2410 } 2411 2412 if (cred == NULL) 2413 return -1; 2414 2415 if (prev) 2416 prev->next = cred->next; 2417 else 2418 config->cred = cred->next; 2419 2420 wpa_config_free_cred(cred); 2421 return 0; 2422} 2423 2424 2425#ifndef CONFIG_NO_CONFIG_BLOBS 2426/** 2427 * wpa_config_get_blob - Get a named configuration blob 2428 * @config: Configuration data from wpa_config_read() 2429 * @name: Name of the blob 2430 * Returns: Pointer to blob data or %NULL if not found 2431 */ 2432const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config, 2433 const char *name) 2434{ 2435 struct wpa_config_blob *blob = config->blobs; 2436 2437 while (blob) { 2438 if (os_strcmp(blob->name, name) == 0) 2439 return blob; 2440 blob = blob->next; 2441 } 2442 return NULL; 2443} 2444 2445 2446/** 2447 * wpa_config_set_blob - Set or add a named configuration blob 2448 * @config: Configuration data from wpa_config_read() 2449 * @blob: New value for the blob 2450 * 2451 * Adds a new configuration blob or replaces the current value of an existing 2452 * blob. 2453 */ 2454void wpa_config_set_blob(struct wpa_config *config, 2455 struct wpa_config_blob *blob) 2456{ 2457 wpa_config_remove_blob(config, blob->name); 2458 blob->next = config->blobs; 2459 config->blobs = blob; 2460} 2461 2462 2463/** 2464 * wpa_config_free_blob - Free blob data 2465 * @blob: Pointer to blob to be freed 2466 */ 2467void wpa_config_free_blob(struct wpa_config_blob *blob) 2468{ 2469 if (blob) { 2470 os_free(blob->name); 2471 os_free(blob->data); 2472 os_free(blob); 2473 } 2474} 2475 2476 2477/** 2478 * wpa_config_remove_blob - Remove a named configuration blob 2479 * @config: Configuration data from wpa_config_read() 2480 * @name: Name of the blob to remove 2481 * Returns: 0 if blob was removed or -1 if blob was not found 2482 */ 2483int wpa_config_remove_blob(struct wpa_config *config, const char *name) 2484{ 2485 struct wpa_config_blob *pos = config->blobs, *prev = NULL; 2486 2487 while (pos) { 2488 if (os_strcmp(pos->name, name) == 0) { 2489 if (prev) 2490 prev->next = pos->next; 2491 else 2492 config->blobs = pos->next; 2493 wpa_config_free_blob(pos); 2494 return 0; 2495 } 2496 prev = pos; 2497 pos = pos->next; 2498 } 2499 2500 return -1; 2501} 2502#endif /* CONFIG_NO_CONFIG_BLOBS */ 2503 2504 2505/** 2506 * wpa_config_alloc_empty - Allocate an empty configuration 2507 * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain 2508 * socket 2509 * @driver_param: Driver parameters 2510 * Returns: Pointer to allocated configuration data or %NULL on failure 2511 */ 2512struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface, 2513 const char *driver_param) 2514{ 2515 struct wpa_config *config; 2516 const int aCWmin = 4, aCWmax = 10; 2517 const struct hostapd_wmm_ac_params ac_bk = 2518 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */ 2519 const struct hostapd_wmm_ac_params ac_be = 2520 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */ 2521 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */ 2522 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 }; 2523 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */ 2524 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 }; 2525 2526 config = os_zalloc(sizeof(*config)); 2527 if (config == NULL) 2528 return NULL; 2529 config->eapol_version = DEFAULT_EAPOL_VERSION; 2530 config->ap_scan = DEFAULT_AP_SCAN; 2531 config->fast_reauth = DEFAULT_FAST_REAUTH; 2532 config->p2p_go_intent = DEFAULT_P2P_GO_INTENT; 2533 config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS; 2534 config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY; 2535 config->bss_max_count = DEFAULT_BSS_MAX_COUNT; 2536 config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE; 2537 config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT; 2538 config->max_num_sta = DEFAULT_MAX_NUM_STA; 2539 config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE; 2540 config->wmm_ac_params[0] = ac_be; 2541 config->wmm_ac_params[1] = ac_bk; 2542 config->wmm_ac_params[2] = ac_vi; 2543 config->wmm_ac_params[3] = ac_vo; 2544 2545 if (ctrl_interface) 2546 config->ctrl_interface = os_strdup(ctrl_interface); 2547 if (driver_param) 2548 config->driver_param = os_strdup(driver_param); 2549 2550 return config; 2551} 2552 2553 2554#ifndef CONFIG_NO_STDOUT_DEBUG 2555/** 2556 * wpa_config_debug_dump_networks - Debug dump of configured networks 2557 * @config: Configuration data from wpa_config_read() 2558 */ 2559void wpa_config_debug_dump_networks(struct wpa_config *config) 2560{ 2561 int prio; 2562 struct wpa_ssid *ssid; 2563 2564 for (prio = 0; prio < config->num_prio; prio++) { 2565 ssid = config->pssid[prio]; 2566 wpa_printf(MSG_DEBUG, "Priority group %d", 2567 ssid->priority); 2568 while (ssid) { 2569 wpa_printf(MSG_DEBUG, " id=%d ssid='%s'", 2570 ssid->id, 2571 wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 2572 ssid = ssid->pnext; 2573 } 2574 } 2575} 2576#endif /* CONFIG_NO_STDOUT_DEBUG */ 2577 2578 2579struct global_parse_data { 2580 char *name; 2581 int (*parser)(const struct global_parse_data *data, 2582 struct wpa_config *config, int line, const char *value); 2583 void *param1, *param2, *param3; 2584 unsigned int changed_flag; 2585}; 2586 2587 2588static int wpa_global_config_parse_int(const struct global_parse_data *data, 2589 struct wpa_config *config, int line, 2590 const char *pos) 2591{ 2592 int *dst; 2593 dst = (int *) (((u8 *) config) + (long) data->param1); 2594 *dst = atoi(pos); 2595 wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst); 2596 2597 if (data->param2 && *dst < (long) data->param2) { 2598 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d " 2599 "min_value=%ld)", line, data->name, *dst, 2600 (long) data->param2); 2601 *dst = (long) data->param2; 2602 return -1; 2603 } 2604 2605 if (data->param3 && *dst > (long) data->param3) { 2606 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d " 2607 "max_value=%ld)", line, data->name, *dst, 2608 (long) data->param3); 2609 *dst = (long) data->param3; 2610 return -1; 2611 } 2612 2613 return 0; 2614} 2615 2616 2617static int wpa_global_config_parse_str(const struct global_parse_data *data, 2618 struct wpa_config *config, int line, 2619 const char *pos) 2620{ 2621 size_t len; 2622 char **dst, *tmp; 2623 2624 len = os_strlen(pos); 2625 if (data->param2 && len < (size_t) data->param2) { 2626 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu " 2627 "min_len=%ld)", line, data->name, 2628 (unsigned long) len, (long) data->param2); 2629 return -1; 2630 } 2631 2632 if (data->param3 && len > (size_t) data->param3) { 2633 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu " 2634 "max_len=%ld)", line, data->name, 2635 (unsigned long) len, (long) data->param3); 2636 return -1; 2637 } 2638 2639 tmp = os_strdup(pos); 2640 if (tmp == NULL) 2641 return -1; 2642 2643 dst = (char **) (((u8 *) config) + (long) data->param1); 2644 os_free(*dst); 2645 *dst = tmp; 2646 wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst); 2647 2648 return 0; 2649} 2650 2651 2652static int wpa_global_config_parse_bin(const struct global_parse_data *data, 2653 struct wpa_config *config, int line, 2654 const char *pos) 2655{ 2656 size_t len; 2657 struct wpabuf **dst, *tmp; 2658 2659 len = os_strlen(pos); 2660 if (len & 0x01) 2661 return -1; 2662 2663 tmp = wpabuf_alloc(len / 2); 2664 if (tmp == NULL) 2665 return -1; 2666 2667 if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) { 2668 wpabuf_free(tmp); 2669 return -1; 2670 } 2671 2672 dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1); 2673 wpabuf_free(*dst); 2674 *dst = tmp; 2675 wpa_printf(MSG_DEBUG, "%s", data->name); 2676 2677 return 0; 2678} 2679 2680 2681static int wpa_config_process_country(const struct global_parse_data *data, 2682 struct wpa_config *config, int line, 2683 const char *pos) 2684{ 2685 if (!pos[0] || !pos[1]) { 2686 wpa_printf(MSG_DEBUG, "Invalid country set"); 2687 return -1; 2688 } 2689 config->country[0] = pos[0]; 2690 config->country[1] = pos[1]; 2691 wpa_printf(MSG_DEBUG, "country='%c%c'", 2692 config->country[0], config->country[1]); 2693 return 0; 2694} 2695 2696 2697static int wpa_config_process_load_dynamic_eap( 2698 const struct global_parse_data *data, struct wpa_config *config, 2699 int line, const char *so) 2700{ 2701 int ret; 2702 wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so); 2703 ret = eap_peer_method_load(so); 2704 if (ret == -2) { 2705 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not " 2706 "reloading."); 2707 } else if (ret) { 2708 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP " 2709 "method '%s'.", line, so); 2710 return -1; 2711 } 2712 2713 return 0; 2714} 2715 2716 2717#ifdef CONFIG_WPS 2718 2719static int wpa_config_process_uuid(const struct global_parse_data *data, 2720 struct wpa_config *config, int line, 2721 const char *pos) 2722{ 2723 char buf[40]; 2724 if (uuid_str2bin(pos, config->uuid)) { 2725 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line); 2726 return -1; 2727 } 2728 uuid_bin2str(config->uuid, buf, sizeof(buf)); 2729 wpa_printf(MSG_DEBUG, "uuid=%s", buf); 2730 return 0; 2731} 2732 2733 2734static int wpa_config_process_device_type( 2735 const struct global_parse_data *data, 2736 struct wpa_config *config, int line, const char *pos) 2737{ 2738 return wps_dev_type_str2bin(pos, config->device_type); 2739} 2740 2741 2742static int wpa_config_process_os_version(const struct global_parse_data *data, 2743 struct wpa_config *config, int line, 2744 const char *pos) 2745{ 2746 if (hexstr2bin(pos, config->os_version, 4)) { 2747 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line); 2748 return -1; 2749 } 2750 wpa_printf(MSG_DEBUG, "os_version=%08x", 2751 WPA_GET_BE32(config->os_version)); 2752 return 0; 2753} 2754 2755 2756static int wpa_config_process_wps_vendor_ext_m1( 2757 const struct global_parse_data *data, 2758 struct wpa_config *config, int line, const char *pos) 2759{ 2760 struct wpabuf *tmp; 2761 int len = os_strlen(pos) / 2; 2762 u8 *p; 2763 2764 if (!len) { 2765 wpa_printf(MSG_ERROR, "Line %d: " 2766 "invalid wps_vendor_ext_m1", line); 2767 return -1; 2768 } 2769 2770 tmp = wpabuf_alloc(len); 2771 if (tmp) { 2772 p = wpabuf_put(tmp, len); 2773 2774 if (hexstr2bin(pos, p, len)) { 2775 wpa_printf(MSG_ERROR, "Line %d: " 2776 "invalid wps_vendor_ext_m1", line); 2777 wpabuf_free(tmp); 2778 return -1; 2779 } 2780 2781 wpabuf_free(config->wps_vendor_ext_m1); 2782 config->wps_vendor_ext_m1 = tmp; 2783 } else { 2784 wpa_printf(MSG_ERROR, "Can not allocate " 2785 "memory for wps_vendor_ext_m1"); 2786 return -1; 2787 } 2788 2789 return 0; 2790} 2791 2792#endif /* CONFIG_WPS */ 2793 2794#ifdef CONFIG_P2P 2795static int wpa_config_process_sec_device_type( 2796 const struct global_parse_data *data, 2797 struct wpa_config *config, int line, const char *pos) 2798{ 2799 int idx; 2800 2801 if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) { 2802 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type " 2803 "items", line); 2804 return -1; 2805 } 2806 2807 idx = config->num_sec_device_types; 2808 2809 if (wps_dev_type_str2bin(pos, config->sec_device_type[idx])) 2810 return -1; 2811 2812 config->num_sec_device_types++; 2813 return 0; 2814} 2815 2816 2817static int wpa_config_process_p2p_pref_chan( 2818 const struct global_parse_data *data, 2819 struct wpa_config *config, int line, const char *pos) 2820{ 2821 struct p2p_channel *pref = NULL, *n; 2822 unsigned int num = 0; 2823 const char *pos2; 2824 u8 op_class, chan; 2825 2826 /* format: class:chan,class:chan,... */ 2827 2828 while (*pos) { 2829 op_class = atoi(pos); 2830 pos2 = os_strchr(pos, ':'); 2831 if (pos2 == NULL) 2832 goto fail; 2833 pos2++; 2834 chan = atoi(pos2); 2835 2836 n = os_realloc_array(pref, num + 1, 2837 sizeof(struct p2p_channel)); 2838 if (n == NULL) 2839 goto fail; 2840 pref = n; 2841 pref[num].op_class = op_class; 2842 pref[num].chan = chan; 2843 num++; 2844 2845 pos = os_strchr(pos2, ','); 2846 if (pos == NULL) 2847 break; 2848 pos++; 2849 } 2850 2851 os_free(config->p2p_pref_chan); 2852 config->p2p_pref_chan = pref; 2853 config->num_p2p_pref_chan = num; 2854 wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs", 2855 (u8 *) config->p2p_pref_chan, 2856 config->num_p2p_pref_chan * sizeof(struct p2p_channel)); 2857 2858 return 0; 2859 2860fail: 2861 os_free(pref); 2862 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line); 2863 return -1; 2864} 2865#endif /* CONFIG_P2P */ 2866 2867 2868static int wpa_config_process_hessid( 2869 const struct global_parse_data *data, 2870 struct wpa_config *config, int line, const char *pos) 2871{ 2872 if (hwaddr_aton2(pos, config->hessid) < 0) { 2873 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'", 2874 line, pos); 2875 return -1; 2876 } 2877 2878 return 0; 2879} 2880 2881 2882static int wpa_config_process_sae_groups( 2883 const struct global_parse_data *data, 2884 struct wpa_config *config, int line, const char *pos) 2885{ 2886 int *groups = wpa_config_parse_int_array(pos); 2887 if (groups == NULL) { 2888 wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'", 2889 line, pos); 2890 return -1; 2891 } 2892 2893 os_free(config->sae_groups); 2894 config->sae_groups = groups; 2895 2896 return 0; 2897} 2898 2899 2900#ifdef OFFSET 2901#undef OFFSET 2902#endif /* OFFSET */ 2903/* OFFSET: Get offset of a variable within the wpa_config structure */ 2904#define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v) 2905 2906#define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL 2907#define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL 2908#define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f) 2909#define INT(f) _INT(f), NULL, NULL 2910#define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max 2911#define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f) 2912#define STR(f) _STR(f), NULL, NULL 2913#define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max 2914#define BIN(f) #f, wpa_global_config_parse_bin, OFFSET(f), NULL, NULL 2915 2916static const struct global_parse_data global_fields[] = { 2917#ifdef CONFIG_CTRL_IFACE 2918 { STR(ctrl_interface), 0 }, 2919 { STR(ctrl_interface_group), 0 } /* deprecated */, 2920#endif /* CONFIG_CTRL_IFACE */ 2921 { INT_RANGE(eapol_version, 1, 2), 0 }, 2922 { INT(ap_scan), 0 }, 2923 { INT(disable_scan_offload), 0 }, 2924 { INT(fast_reauth), 0 }, 2925 { STR(opensc_engine_path), 0 }, 2926 { STR(pkcs11_engine_path), 0 }, 2927 { STR(pkcs11_module_path), 0 }, 2928 { STR(pcsc_reader), 0 }, 2929 { STR(pcsc_pin), 0 }, 2930 { STR(driver_param), 0 }, 2931 { INT(dot11RSNAConfigPMKLifetime), 0 }, 2932 { INT(dot11RSNAConfigPMKReauthThreshold), 0 }, 2933 { INT(dot11RSNAConfigSATimeout), 0 }, 2934#ifndef CONFIG_NO_CONFIG_WRITE 2935 { INT(update_config), 0 }, 2936#endif /* CONFIG_NO_CONFIG_WRITE */ 2937 { FUNC_NO_VAR(load_dynamic_eap), 0 }, 2938#ifdef CONFIG_WPS 2939 { FUNC(uuid), CFG_CHANGED_UUID }, 2940 { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME }, 2941 { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING }, 2942 { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING }, 2943 { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING }, 2944 { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING }, 2945 { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE }, 2946 { FUNC(os_version), CFG_CHANGED_OS_VERSION }, 2947 { STR(config_methods), CFG_CHANGED_CONFIG_METHODS }, 2948 { INT_RANGE(wps_cred_processing, 0, 2), 0 }, 2949 { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION }, 2950#endif /* CONFIG_WPS */ 2951#ifdef CONFIG_P2P 2952 { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE }, 2953 { INT(p2p_listen_reg_class), 0 }, 2954 { INT(p2p_listen_channel), 0 }, 2955 { INT(p2p_oper_reg_class), 0 }, 2956 { INT(p2p_oper_channel), 0 }, 2957 { INT_RANGE(p2p_go_intent, 0, 15), 0 }, 2958 { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX }, 2959 { INT_RANGE(persistent_reconnect, 0, 1), 0 }, 2960 { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS }, 2961 { INT(p2p_group_idle), 0 }, 2962 { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN }, 2963 { INT(p2p_go_ht40), 0 }, 2964 { INT(p2p_disabled), 0 }, 2965 { INT(p2p_no_group_iface), 0 }, 2966#endif /* CONFIG_P2P */ 2967 { FUNC(country), CFG_CHANGED_COUNTRY }, 2968 { INT(bss_max_count), 0 }, 2969 { INT(bss_expiration_age), 0 }, 2970 { INT(bss_expiration_scan_count), 0 }, 2971 { INT_RANGE(filter_ssids, 0, 1), 0 }, 2972 { INT_RANGE(filter_rssi, -100, 0), 0 }, 2973 { INT(max_num_sta), 0 }, 2974 { INT_RANGE(disassoc_low_ack, 0, 1), 0 }, 2975#ifdef CONFIG_HS20 2976 { INT_RANGE(hs20, 0, 1), 0 }, 2977#endif /* CONFIG_HS20 */ 2978 { INT_RANGE(interworking, 0, 1), 0 }, 2979 { FUNC(hessid), 0 }, 2980 { INT_RANGE(access_network_type, 0, 15), 0 }, 2981 { INT_RANGE(pbc_in_m1, 0, 1), 0 }, 2982 { STR(autoscan), 0 }, 2983 { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff), 0 }, 2984 { BIN(wps_nfc_dh_pubkey), 0 }, 2985 { BIN(wps_nfc_dh_privkey), 0 }, 2986 { BIN(wps_nfc_dev_pw), 0 }, 2987 { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND }, 2988 { INT(p2p_go_max_inactivity), 0 }, 2989 { INT_RANGE(auto_interworking, 0, 1), 0 }, 2990 { INT(okc), 0 }, 2991 { INT(pmf), 0 }, 2992 { FUNC(sae_groups), 0 }, 2993}; 2994 2995#undef FUNC 2996#undef _INT 2997#undef INT 2998#undef INT_RANGE 2999#undef _STR 3000#undef STR 3001#undef STR_RANGE 3002#undef BIN 3003#define NUM_GLOBAL_FIELDS (sizeof(global_fields) / sizeof(global_fields[0])) 3004 3005 3006int wpa_config_process_global(struct wpa_config *config, char *pos, int line) 3007{ 3008 size_t i; 3009 int ret = 0; 3010 3011 for (i = 0; i < NUM_GLOBAL_FIELDS; i++) { 3012 const struct global_parse_data *field = &global_fields[i]; 3013 size_t flen = os_strlen(field->name); 3014 if (os_strncmp(pos, field->name, flen) != 0 || 3015 pos[flen] != '=') 3016 continue; 3017 3018 if (field->parser(field, config, line, pos + flen + 1)) { 3019 wpa_printf(MSG_ERROR, "Line %d: failed to " 3020 "parse '%s'.", line, pos); 3021 ret = -1; 3022 } 3023 config->changed_parameters |= field->changed_flag; 3024 break; 3025 } 3026 if (i == NUM_GLOBAL_FIELDS) { 3027#ifdef CONFIG_AP 3028 if (os_strncmp(pos, "wmm_ac_", 7) == 0) { 3029 char *tmp = os_strchr(pos, '='); 3030 if (tmp == NULL) { 3031 if (line < 0) 3032 return -1; 3033 wpa_printf(MSG_ERROR, "Line %d: invalid line " 3034 "'%s'", line, pos); 3035 return -1; 3036 } 3037 *tmp++ = '\0'; 3038 if (hostapd_config_wmm_ac(config->wmm_ac_params, pos, 3039 tmp)) { 3040 wpa_printf(MSG_ERROR, "Line %d: invalid WMM " 3041 "AC item", line); 3042 return -1; 3043 } 3044 } 3045#endif /* CONFIG_AP */ 3046 if (line < 0) 3047 return -1; 3048 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.", 3049 line, pos); 3050 ret = -1; 3051 } 3052 3053 return ret; 3054} 3055