wpa_supplicant/config.c

   1 /*
   2  * WPA Supplicant / Configuration parser and common functions
   3  * Copyright (c) 2003-2015, 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 "utils/ip_addr.h"
  14 #include "crypto/sha1.h"
  15 #include "rsn_supp/wpa.h"
  16 #include "eap_peer/eap.h"
  17 #include "p2p/p2p.h"
  18 #include "config.h"
  19
  20
  21 #if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
  22 #define NO_CONFIG_WRITE
  23 #endif
  24
  25 /*
  26  * Structure for network configuration parsing. This data is used to implement
  27  * a generic parser for each network block variable. The table of configuration
  28  * variables is defined below in this file (ssid_fields[]).
  29  */
  30 struct parse_data {
  31         /* Configuration variable name */
  32         char *name;
  33
  34         /* Parser function for this variable */
  35         int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
  36                       int line, const char *value);
  37
  38 #ifndef NO_CONFIG_WRITE
  39         /* Writer function (i.e., to get the variable in text format from
  40          * internal presentation). */
  41         char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
  42 #endif /* NO_CONFIG_WRITE */
  43
  44         /* Variable specific parameters for the parser. */
  45         void *param1, *param2, *param3, *param4;
  46
  47         /* 0 = this variable can be included in debug output and ctrl_iface
  48          * 1 = this variable contains key/private data and it must not be
  49          *     included in debug output unless explicitly requested. In
  50          *     addition, this variable will not be readable through the
  51          *     ctrl_iface.
  52          */
  53         int key_data;
  54 };
  55
  56
  57 static int wpa_config_parse_str(const struct parse_data *data,
  58                                 struct wpa_ssid *ssid,
  59                                 int line, const char *value)
  60 {
  61         size_t res_len, *dst_len;
  62         char **dst, *tmp;
  63
  64         if (os_strcmp(value, "NULL") == 0) {
  65                 wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
  66                            data->name);
  67                 tmp = NULL;
  68                 res_len = 0;
  69                 goto set;
  70         }
  71
  72         tmp = wpa_config_parse_string(value, &res_len);
  73         if (tmp == NULL) {
  74                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
  75                            line, data->name,
  76                            data->key_data ? "[KEY DATA REMOVED]" : value);
  77                 return -1;
  78         }
  79
  80         if (data->key_data) {
  81                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
  82                                       (u8 *) tmp, res_len);
  83         } else {
  84                 wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
  85                                   (u8 *) tmp, res_len);
  86         }
  87
  88         if (data->param3 && res_len < (size_t) data->param3) {
  89                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
  90                            "min_len=%ld)", line, data->name,
  91                            (unsigned long) res_len, (long) data->param3);
  92                 os_free(tmp);
  93                 return -1;
  94         }
  95
  96         if (data->param4 && res_len > (size_t) data->param4) {
  97                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
  98                            "max_len=%ld)", line, data->name,
  99                            (unsigned long) res_len, (long) data->param4);
 100                 os_free(tmp);
 101                 return -1;
 102         }
 103
 104 set:
 105         dst = (char **) (((u8 *) ssid) + (long) data->param1);
 106         dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
 107         os_free(*dst);
 108         *dst = tmp;
 109         if (data->param2)
 110                 *dst_len = res_len;
 111
 112         return 0;
 113 }
 114
 115
 116 #ifndef NO_CONFIG_WRITE
 117 static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
 118 {
 119         char *buf;
 120
 121         buf = os_malloc(len + 3);
 122         if (buf == NULL)
 123                 return NULL;
 124         buf[0] = '"';
 125         os_memcpy(buf + 1, value, len);
 126         buf[len + 1] = '"';
 127         buf[len + 2] = '\0';
 128
 129         return buf;
 130 }
 131
 132
 133 static char * wpa_config_write_string_hex(const u8 *value, size_t len)
 134 {
 135         char *buf;
 136
 137         buf = os_zalloc(2 * len + 1);
 138         if (buf == NULL)
 139                 return NULL;
 140         wpa_snprintf_hex(buf, 2 * len + 1, value, len);
 141
 142         return buf;
 143 }
 144
 145
 146 static char * wpa_config_write_string(const u8 *value, size_t len)
 147 {
 148         if (value == NULL)
 149                 return NULL;
 150
 151         if (is_hex(value, len))
 152                 return wpa_config_write_string_hex(value, len);
 153         else
 154                 return wpa_config_write_string_ascii(value, len);
 155 }
 156
 157
 158 static char * wpa_config_write_str(const struct parse_data *data,
 159                                    struct wpa_ssid *ssid)
 160 {
 161         size_t len;
 162         char **src;
 163
 164         src = (char **) (((u8 *) ssid) + (long) data->param1);
 165         if (*src == NULL)
 166                 return NULL;
 167
 168         if (data->param2)
 169                 len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
 170         else
 171                 len = os_strlen(*src);
 172
 173         return wpa_config_write_string((const u8 *) *src, len);
 174 }
 175 #endif /* NO_CONFIG_WRITE */
 176
 177
 178 static int wpa_config_parse_int(const struct parse_data *data,
 179                                 struct wpa_ssid *ssid,
 180                                 int line, const char *value)
 181 {
 182         int val, *dst;
 183         char *end;
 184
 185         dst = (int *) (((u8 *) ssid) + (long) data->param1);
 186         val = strtol(value, &end, 0);
 187         if (*end) {
 188                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
 189                            line, value);
 190                 return -1;
 191         }
 192         *dst = val;
 193         wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
 194
 195         if (data->param3 && *dst < (long) data->param3) {
 196                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
 197                            "min_value=%ld)", line, data->name, *dst,
 198                            (long) data->param3);
 199                 *dst = (long) data->param3;
 200                 return -1;
 201         }
 202
 203         if (data->param4 && *dst > (long) data->param4) {
 204                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
 205                            "max_value=%ld)", line, data->name, *dst,
 206                            (long) data->param4);
 207                 *dst = (long) data->param4;
 208                 return -1;
 209         }
 210
 211         return 0;
 212 }
 213
 214
 215 #ifndef NO_CONFIG_WRITE
 216 static char * wpa_config_write_int(const struct parse_data *data,
 217                                    struct wpa_ssid *ssid)
 218 {
 219         int *src, res;
 220         char *value;
 221
 222         src = (int *) (((u8 *) ssid) + (long) data->param1);
 223
 224         value = os_malloc(20);
 225         if (value == NULL)
 226                 return NULL;
 227         res = os_snprintf(value, 20, "%d", *src);
 228         if (os_snprintf_error(20, res)) {
 229                 os_free(value);
 230                 return NULL;
 231         }
 232         value[20 - 1] = '\0';
 233         return value;
 234 }
 235 #endif /* NO_CONFIG_WRITE */
 236
 237
 238 static int wpa_config_parse_addr_list(const struct parse_data *data,
 239                                       int line, const char *value,
 240                                       u8 **list, size_t *num, char *name,
 241                                       u8 abort_on_error, u8 masked)
 242 {
 243         const char *pos;
 244         u8 *buf, *n, addr[2 * ETH_ALEN];
 245         size_t count;
 246
 247         buf = NULL;
 248         count = 0;
 249
 250         pos = value;
 251         while (pos && *pos) {
 252                 while (*pos == ' ')
 253                         pos++;
 254
 255                 if (hwaddr_masked_aton(pos, addr, &addr[ETH_ALEN], masked)) {
 256                         if (abort_on_error || count == 0) {
 257                                 wpa_printf(MSG_ERROR,
 258                                            "Line %d: Invalid %s address '%s'",
 259                                            line, name, value);
 260                                 os_free(buf);
 261                                 return -1;
 262                         }
 263                         /* continue anyway since this could have been from a
 264                          * truncated configuration file line */
 265                         wpa_printf(MSG_INFO,
 266                                    "Line %d: Ignore likely truncated %s address '%s'",
 267                                    line, name, pos);
 268                 } else {
 269                         n = os_realloc_array(buf, count + 1, 2 * ETH_ALEN);
 270                         if (n == NULL) {
 271                                 os_free(buf);
 272                                 return -1;
 273                         }
 274                         buf = n;
 275                         os_memmove(buf + 2 * ETH_ALEN, buf,
 276                                    count * 2 * ETH_ALEN);
 277                         os_memcpy(buf, addr, 2 * ETH_ALEN);
 278                         count++;
 279                         wpa_printf(MSG_MSGDUMP,
 280                                    "%s: addr=" MACSTR " mask=" MACSTR,
 281                                    name, MAC2STR(addr),
 282                                    MAC2STR(&addr[ETH_ALEN]));
 283                 }
 284
 285                 pos = os_strchr(pos, ' ');
 286         }
 287
 288         os_free(*list);
 289         *list = buf;
 290         *num = count;
 291
 292         return 0;
 293 }
 294
 295
 296 #ifndef NO_CONFIG_WRITE
 297 static char * wpa_config_write_addr_list(const struct parse_data *data,
 298                                          const u8 *list, size_t num, char *name)
 299 {
 300         char *value, *end, *pos;
 301         int res;
 302         size_t i;
 303
 304         if (list == NULL || num == 0)
 305                 return NULL;
 306
 307         value = os_malloc(2 * 20 * num);
 308         if (value == NULL)
 309                 return NULL;
 310         pos = value;
 311         end = value + 2 * 20 * num;
 312
 313         for (i = num; i > 0; i--) {
 314                 const u8 *a = list + (i - 1) * 2 * ETH_ALEN;
 315                 const u8 *m = a + ETH_ALEN;
 316
 317                 if (i < num)
 318                         *pos++ = ' ';
 319                 res = hwaddr_mask_txt(pos, end - pos, a, m);
 320                 if (res < 0) {
 321                         os_free(value);
 322                         return NULL;
 323                 }
 324                 pos += res;
 325         }
 326
 327         return value;
 328 }
 329 #endif /* NO_CONFIG_WRITE */
 330
 331 static int wpa_config_parse_bssid(const struct parse_data *data,
 332                                   struct wpa_ssid *ssid, int line,
 333                                   const char *value)
 334 {
 335         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
 336             os_strcmp(value, "any") == 0) {
 337                 ssid->bssid_set = 0;
 338                 wpa_printf(MSG_MSGDUMP, "BSSID any");
 339                 return 0;
 340         }
 341         if (hwaddr_aton(value, ssid->bssid)) {
 342                 wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
 343                            line, value);
 344                 return -1;
 345         }
 346         ssid->bssid_set = 1;
 347         wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
 348         return 0;
 349 }
 350
 351
 352 #ifndef NO_CONFIG_WRITE
 353 static char * wpa_config_write_bssid(const struct parse_data *data,
 354                                      struct wpa_ssid *ssid)
 355 {
 356         char *value;
 357         int res;
 358
 359         if (!ssid->bssid_set)
 360                 return NULL;
 361
 362         value = os_malloc(20);
 363         if (value == NULL)
 364                 return NULL;
 365         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
 366         if (os_snprintf_error(20, res)) {
 367                 os_free(value);
 368                 return NULL;
 369         }
 370         value[20 - 1] = '\0';
 371         return value;
 372 }
 373 #endif /* NO_CONFIG_WRITE */
 374
 375
 376 static int wpa_config_parse_bssid_blacklist(const struct parse_data *data,
 377                                             struct wpa_ssid *ssid, int line,
 378                                             const char *value)
 379 {
 380         return wpa_config_parse_addr_list(data, line, value,
 381                                           &ssid->bssid_blacklist,
 382                                           &ssid->num_bssid_blacklist,
 383                                           "bssid_blacklist", 1, 1);
 384 }
 385
 386
 387 #ifndef NO_CONFIG_WRITE
 388 static char * wpa_config_write_bssid_blacklist(const struct parse_data *data,
 389                                                struct wpa_ssid *ssid)
 390 {
 391         return wpa_config_write_addr_list(data, ssid->bssid_blacklist,
 392                                           ssid->num_bssid_blacklist,
 393                                           "bssid_blacklist");
 394 }
 395 #endif /* NO_CONFIG_WRITE */
 396
 397
 398 static int wpa_config_parse_bssid_whitelist(const struct parse_data *data,
 399                                             struct wpa_ssid *ssid, int line,
 400                                             const char *value)
 401 {
 402         return wpa_config_parse_addr_list(data, line, value,
 403                                           &ssid->bssid_whitelist,
 404                                           &ssid->num_bssid_whitelist,
 405                                           "bssid_whitelist", 1, 1);
 406 }
 407
 408
 409 #ifndef NO_CONFIG_WRITE
 410 static char * wpa_config_write_bssid_whitelist(const struct parse_data *data,
 411                                                struct wpa_ssid *ssid)
 412 {
 413         return wpa_config_write_addr_list(data, ssid->bssid_whitelist,
 414                                           ssid->num_bssid_whitelist,
 415                                           "bssid_whitelist");
 416 }
 417 #endif /* NO_CONFIG_WRITE */
 418
 419
 420 static int wpa_config_parse_psk(const struct parse_data *data,
 421                                 struct wpa_ssid *ssid, int line,
 422                                 const char *value)
 423 {
 424 #ifdef CONFIG_EXT_PASSWORD
 425         if (os_strncmp(value, "ext:", 4) == 0) {
 426                 str_clear_free(ssid->passphrase);
 427                 ssid->passphrase = NULL;
 428                 ssid->psk_set = 0;
 429                 os_free(ssid->ext_psk);
 430                 ssid->ext_psk = os_strdup(value + 4);
 431                 if (ssid->ext_psk == NULL)
 432                         return -1;
 433                 wpa_printf(MSG_DEBUG, "PSK: External password '%s'",
 434                            ssid->ext_psk);
 435                 return 0;
 436         }
 437 #endif /* CONFIG_EXT_PASSWORD */
 438
 439         if (*value == '"') {
 440 #ifndef CONFIG_NO_PBKDF2
 441                 const char *pos;
 442                 size_t len;
 443
 444                 value++;
 445                 pos = os_strrchr(value, '"');
 446                 if (pos)
 447                         len = pos - value;
 448                 else
 449                         len = os_strlen(value);
 450                 if (len < 8 || len > 63) {
 451                         wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
 452                                    "length %lu (expected: 8..63) '%s'.",
 453                                    line, (unsigned long) len, value);
 454                         return -1;
 455                 }
 456                 wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
 457                                       (u8 *) value, len);
 458                 if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
 459                     os_memcmp(ssid->passphrase, value, len) == 0)
 460                         return 0;
 461                 ssid->psk_set = 0;
 462                 str_clear_free(ssid->passphrase);
 463                 ssid->passphrase = dup_binstr(value, len);
 464                 if (ssid->passphrase == NULL)
 465                         return -1;
 466                 return 0;
 467 #else /* CONFIG_NO_PBKDF2 */
 468                 wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
 469                            "supported.", line);
 470                 return -1;
 471 #endif /* CONFIG_NO_PBKDF2 */
 472         }
 473
 474         if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
 475             value[PMK_LEN * 2] != '\0') {
 476                 wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
 477                            line, value);
 478                 return -1;
 479         }
 480
 481         str_clear_free(ssid->passphrase);
 482         ssid->passphrase = NULL;
 483
 484         ssid->psk_set = 1;
 485         wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
 486         return 0;
 487 }
 488
 489
 490 #ifndef NO_CONFIG_WRITE
 491 static char * wpa_config_write_psk(const struct parse_data *data,
 492                                    struct wpa_ssid *ssid)
 493 {
 494 #ifdef CONFIG_EXT_PASSWORD
 495         if (ssid->ext_psk) {
 496                 size_t len = 4 + os_strlen(ssid->ext_psk) + 1;
 497                 char *buf = os_malloc(len);
 498                 int res;
 499
 500                 if (buf == NULL)
 501                         return NULL;
 502                 res = os_snprintf(buf, len, "ext:%s", ssid->ext_psk);
 503                 if (os_snprintf_error(len, res)) {
 504                         os_free(buf);
 505                         buf = NULL;
 506                 }
 507                 return buf;
 508         }
 509 #endif /* CONFIG_EXT_PASSWORD */
 510
 511         if (ssid->passphrase)
 512                 return wpa_config_write_string_ascii(
 513                         (const u8 *) ssid->passphrase,
 514                         os_strlen(ssid->passphrase));
 515
 516         if (ssid->psk_set)
 517                 return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
 518
 519         return NULL;
 520 }
 521 #endif /* NO_CONFIG_WRITE */
 522
 523
 524 static int wpa_config_parse_proto(const struct parse_data *data,
 525                                   struct wpa_ssid *ssid, int line,
 526                                   const char *value)
 527 {
 528         int val = 0, last, errors = 0;
 529         char *start, *end, *buf;
 530
 531         buf = os_strdup(value);
 532         if (buf == NULL)
 533                 return -1;
 534         start = buf;
 535
 536         while (*start != '\0') {
 537                 while (*start == ' ' || *start == '\t')
 538                         start++;
 539                 if (*start == '\0')
 540                         break;
 541                 end = start;
 542                 while (*end != ' ' && *end != '\t' && *end != '\0')
 543                         end++;
 544                 last = *end == '\0';
 545                 *end = '\0';
 546                 if (os_strcmp(start, "WPA") == 0)
 547                         val |= WPA_PROTO_WPA;
 548                 else if (os_strcmp(start, "RSN") == 0 ||
 549                          os_strcmp(start, "WPA2") == 0)
 550                         val |= WPA_PROTO_RSN;
 551                 else if (os_strcmp(start, "OSEN") == 0)
 552                         val |= WPA_PROTO_OSEN;
 553                 else {
 554                         wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
 555                                    line, start);
 556                         errors++;
 557                 }
 558
 559                 if (last)
 560                         break;
 561                 start = end + 1;
 562         }
 563         os_free(buf);
 564
 565         if (val == 0) {
 566                 wpa_printf(MSG_ERROR,
 567                            "Line %d: no proto values configured.", line);
 568                 errors++;
 569         }
 570
 571         wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
 572         ssid->proto = val;
 573         return errors ? -1 : 0;
 574 }
 575
 576
 577 #ifndef NO_CONFIG_WRITE
 578 static char * wpa_config_write_proto(const struct parse_data *data,
 579                                      struct wpa_ssid *ssid)
 580 {
 581         int ret;
 582         char *buf, *pos, *end;
 583
 584         pos = buf = os_zalloc(20);
 585         if (buf == NULL)
 586                 return NULL;
 587         end = buf + 20;
 588
 589         if (ssid->proto & WPA_PROTO_WPA) {
 590                 ret = os_snprintf(pos, end - pos, "%sWPA",
 591                                   pos == buf ? "" : " ");
 592                 if (os_snprintf_error(end - pos, ret))
 593                         return buf;
 594                 pos += ret;
 595         }
 596
 597         if (ssid->proto & WPA_PROTO_RSN) {
 598                 ret = os_snprintf(pos, end - pos, "%sRSN",
 599                                   pos == buf ? "" : " ");
 600                 if (os_snprintf_error(end - pos, ret))
 601                         return buf;
 602                 pos += ret;
 603         }
 604
 605         if (ssid->proto & WPA_PROTO_OSEN) {
 606                 ret = os_snprintf(pos, end - pos, "%sOSEN",
 607                                   pos == buf ? "" : " ");
 608                 if (os_snprintf_error(end - pos, ret))
 609                         return buf;
 610                 pos += ret;
 611         }
 612
 613         if (pos == buf) {
 614                 os_free(buf);
 615                 buf = NULL;
 616         }
 617
 618         return buf;
 619 }
 620 #endif /* NO_CONFIG_WRITE */
 621
 622
 623 static int wpa_config_parse_key_mgmt(const struct parse_data *data,
 624                                      struct wpa_ssid *ssid, int line,
 625                                      const char *value)
 626 {
 627         int val = 0, last, errors = 0;
 628         char *start, *end, *buf;
 629
 630         buf = os_strdup(value);
 631         if (buf == NULL)
 632                 return -1;
 633         start = buf;
 634
 635         while (*start != '\0') {
 636                 while (*start == ' ' || *start == '\t')
 637                         start++;
 638                 if (*start == '\0')
 639                         break;
 640                 end = start;
 641                 while (*end != ' ' && *end != '\t' && *end != '\0')
 642                         end++;
 643                 last = *end == '\0';
 644                 *end = '\0';
 645                 if (os_strcmp(start, "WPA-PSK") == 0)
 646                         val |= WPA_KEY_MGMT_PSK;
 647                 else if (os_strcmp(start, "WPA-EAP") == 0)
 648                         val |= WPA_KEY_MGMT_IEEE8021X;
 649                 else if (os_strcmp(start, "IEEE8021X") == 0)
 650                         val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
 651                 else if (os_strcmp(start, "NONE") == 0)
 652                         val |= WPA_KEY_MGMT_NONE;
 653                 else if (os_strcmp(start, "WPA-NONE") == 0)
 654                         val |= WPA_KEY_MGMT_WPA_NONE;
 655 #ifdef CONFIG_IEEE80211R
 656                 else if (os_strcmp(start, "FT-PSK") == 0)
 657                         val |= WPA_KEY_MGMT_FT_PSK;
 658                 else if (os_strcmp(start, "FT-EAP") == 0)
 659                         val |= WPA_KEY_MGMT_FT_IEEE8021X;
 660 #endif /* CONFIG_IEEE80211R */
 661 #ifdef CONFIG_IEEE80211W
 662                 else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
 663                         val |= WPA_KEY_MGMT_PSK_SHA256;
 664                 else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
 665                         val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
 666 #endif /* CONFIG_IEEE80211W */
 667 #ifdef CONFIG_WPS
 668                 else if (os_strcmp(start, "WPS") == 0)
 669                         val |= WPA_KEY_MGMT_WPS;
 670 #endif /* CONFIG_WPS */
 671 #ifdef CONFIG_SAE
 672                 else if (os_strcmp(start, "SAE") == 0)
 673                         val |= WPA_KEY_MGMT_SAE;
 674                 else if (os_strcmp(start, "FT-SAE") == 0)
 675                         val |= WPA_KEY_MGMT_FT_SAE;
 676 #endif /* CONFIG_SAE */
 677 #ifdef CONFIG_HS20
 678                 else if (os_strcmp(start, "OSEN") == 0)
 679                         val |= WPA_KEY_MGMT_OSEN;
 680 #endif /* CONFIG_HS20 */
 681 #ifdef CONFIG_SUITEB
 682                 else if (os_strcmp(start, "WPA-EAP-SUITE-B") == 0)
 683                         val |= WPA_KEY_MGMT_IEEE8021X_SUITE_B;
 684 #endif /* CONFIG_SUITEB */
 685 #ifdef CONFIG_SUITEB192
 686                 else if (os_strcmp(start, "WPA-EAP-SUITE-B-192") == 0)
 687                         val |= WPA_KEY_MGMT_IEEE8021X_SUITE_B_192;
 688 #endif /* CONFIG_SUITEB192 */
 689                 else {
 690                         wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
 691                                    line, start);
 692                         errors++;
 693                 }
 694
 695                 if (last)
 696                         break;
 697                 start = end + 1;
 698         }
 699         os_free(buf);
 700
 701         if (val == 0) {
 702                 wpa_printf(MSG_ERROR,
 703                            "Line %d: no key_mgmt values configured.", line);
 704                 errors++;
 705         }
 706
 707         wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
 708         ssid->key_mgmt = val;
 709         return errors ? -1 : 0;
 710 }
 711
 712
 713 #ifndef NO_CONFIG_WRITE
 714 static char * wpa_config_write_key_mgmt(const struct parse_data *data,
 715                                         struct wpa_ssid *ssid)
 716 {
 717         char *buf, *pos, *end;
 718         int ret;
 719
 720         pos = buf = os_zalloc(100);
 721         if (buf == NULL)
 722                 return NULL;
 723         end = buf + 100;
 724
 725         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
 726                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
 727                                   pos == buf ? "" : " ");
 728                 if (os_snprintf_error(end - pos, ret)) {
 729                         end[-1] = '\0';
 730                         return buf;
 731                 }
 732                 pos += ret;
 733         }
 734
 735         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
 736                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
 737                                   pos == buf ? "" : " ");
 738                 if (os_snprintf_error(end - pos, ret)) {
 739                         end[-1] = '\0';
 740                         return buf;
 741                 }
 742                 pos += ret;
 743         }
 744
 745         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 746                 ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
 747                                   pos == buf ? "" : " ");
 748                 if (os_snprintf_error(end - pos, ret)) {
 749                         end[-1] = '\0';
 750                         return buf;
 751                 }
 752                 pos += ret;
 753         }
 754
 755         if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
 756                 ret = os_snprintf(pos, end - pos, "%sNONE",
 757                                   pos == buf ? "" : " ");
 758                 if (os_snprintf_error(end - pos, ret)) {
 759                         end[-1] = '\0';
 760                         return buf;
 761                 }
 762                 pos += ret;
 763         }
 764
 765         if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
 766                 ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
 767                                   pos == buf ? "" : " ");
 768                 if (os_snprintf_error(end - pos, ret)) {
 769                         end[-1] = '\0';
 770                         return buf;
 771                 }
 772                 pos += ret;
 773         }
 774
 775 #ifdef CONFIG_IEEE80211R
 776         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) {
 777                 ret = os_snprintf(pos, end - pos, "%sFT-PSK",
 778                                   pos == buf ? "" : " ");
 779                 if (os_snprintf_error(end - pos, ret)) {
 780                         end[-1] = '\0';
 781                         return buf;
 782                 }
 783                 pos += ret;
 784         }
 785
 786         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
 787                 ret = os_snprintf(pos, end - pos, "%sFT-EAP",
 788                                   pos == buf ? "" : " ");
 789                 if (os_snprintf_error(end - pos, ret)) {
 790                         end[-1] = '\0';
 791                         return buf;
 792                 }
 793                 pos += ret;
 794         }
 795 #endif /* CONFIG_IEEE80211R */
 796
 797 #ifdef CONFIG_IEEE80211W
 798         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
 799                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
 800                                   pos == buf ? "" : " ");
 801                 if (os_snprintf_error(end - pos, ret)) {
 802                         end[-1] = '\0';
 803                         return buf;
 804                 }
 805                 pos += ret;
 806         }
 807
 808         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 809                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
 810                                   pos == buf ? "" : " ");
 811                 if (os_snprintf_error(end - pos, ret)) {
 812                         end[-1] = '\0';
 813                         return buf;
 814                 }
 815                 pos += ret;
 816         }
 817 #endif /* CONFIG_IEEE80211W */
 818
 819 #ifdef CONFIG_WPS
 820         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 821                 ret = os_snprintf(pos, end - pos, "%sWPS",
 822                                   pos == buf ? "" : " ");
 823                 if (os_snprintf_error(end - pos, ret)) {
 824                         end[-1] = '\0';
 825                         return buf;
 826                 }
 827                 pos += ret;
 828         }
 829 #endif /* CONFIG_WPS */
 830
 831 #ifdef CONFIG_SAE
 832         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 833                 ret = os_snprintf(pos, end - pos, "%sSAE",
 834                                   pos == buf ? "" : " ");
 835                 if (os_snprintf_error(end - pos, ret)) {
 836                         end[-1] = '\0';
 837                         return buf;
 838                 }
 839                 pos += ret;
 840         }
 841
 842         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_SAE) {
 843                 ret = os_snprintf(pos, end - pos, "%sFT-SAE",
 844                                   pos == buf ? "" : " ");
 845                 if (os_snprintf_error(end - pos, ret)) {
 846                         end[-1] = '\0';
 847                         return buf;
 848                 }
 849                 pos += ret;
 850         }
 851 #endif /* CONFIG_SAE */
 852
 853 #ifdef CONFIG_HS20
 854         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN) {
 855                 ret = os_snprintf(pos, end - pos, "%sOSEN",
 856                                   pos == buf ? "" : " ");
 857                 if (os_snprintf_error(end - pos, ret)) {
 858                         end[-1] = '\0';
 859                         return buf;
 860                 }
 861                 pos += ret;
 862         }
 863 #endif /* CONFIG_HS20 */
 864
 865 #ifdef CONFIG_SUITEB
 866         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
 867                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SUITE-B",
 868                                   pos == buf ? "" : " ");
 869                 if (os_snprintf_error(end - pos, ret)) {
 870                         end[-1] = '\0';
 871                         return buf;
 872                 }
 873                 pos += ret;
 874         }
 875 #endif /* CONFIG_SUITEB */
 876
 877 #ifdef CONFIG_SUITEB192
 878         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
 879                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SUITE-B-192",
 880                                   pos == buf ? "" : " ");
 881                 if (os_snprintf_error(end - pos, ret)) {
 882                         end[-1] = '\0';
 883                         return buf;
 884                 }
 885                 pos += ret;
 886         }
 887 #endif /* CONFIG_SUITEB192 */
 888
 889         if (pos == buf) {
 890                 os_free(buf);
 891                 buf = NULL;
 892         }
 893
 894         return buf;
 895 }
 896 #endif /* NO_CONFIG_WRITE */
 897
 898
 899 static int wpa_config_parse_cipher(int line, const char *value)
 900 {
 901         int val = wpa_parse_cipher(value);
 902         if (val < 0) {
 903                 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
 904                            line, value);
 905                 return -1;
 906         }
 907         if (val == 0) {
 908                 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
 909                            line);
 910                 return -1;
 911         }
 912         return val;
 913 }
 914
 915
 916 #ifndef NO_CONFIG_WRITE
 917 static char * wpa_config_write_cipher(int cipher)
 918 {
 919         char *buf = os_zalloc(50);
 920         if (buf == NULL)
 921                 return NULL;
 922
 923         if (wpa_write_ciphers(buf, buf + 50, cipher, " ") < 0) {
 924                 os_free(buf);
 925                 return NULL;
 926         }
 927
 928         return buf;
 929 }
 930 #endif /* NO_CONFIG_WRITE */
 931
 932
 933 static int wpa_config_parse_pairwise(const struct parse_data *data,
 934                                      struct wpa_ssid *ssid, int line,
 935                                      const char *value)
 936 {
 937         int val;
 938         val = wpa_config_parse_cipher(line, value);
 939         if (val == -1)
 940                 return -1;
 941         if (val & ~WPA_ALLOWED_PAIRWISE_CIPHERS) {
 942                 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
 943                            "(0x%x).", line, val);
 944                 return -1;
 945         }
 946
 947         wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
 948         ssid->pairwise_cipher = val;
 949         return 0;
 950 }
 951
 952
 953 #ifndef NO_CONFIG_WRITE
 954 static char * wpa_config_write_pairwise(const struct parse_data *data,
 955                                         struct wpa_ssid *ssid)
 956 {
 957         return wpa_config_write_cipher(ssid->pairwise_cipher);
 958 }
 959 #endif /* NO_CONFIG_WRITE */
 960
 961
 962 static int wpa_config_parse_group(const struct parse_data *data,
 963                                   struct wpa_ssid *ssid, int line,
 964                                   const char *value)
 965 {
 966         int val;
 967         val = wpa_config_parse_cipher(line, value);
 968         if (val == -1)
 969                 return -1;
 970         if (val & ~WPA_ALLOWED_GROUP_CIPHERS) {
 971                 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
 972                            "(0x%x).", line, val);
 973                 return -1;
 974         }
 975
 976         wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
 977         ssid->group_cipher = val;
 978         return 0;
 979 }
 980
 981
 982 #ifndef NO_CONFIG_WRITE
 983 static char * wpa_config_write_group(const struct parse_data *data,
 984                                      struct wpa_ssid *ssid)
 985 {
 986         return wpa_config_write_cipher(ssid->group_cipher);
 987 }
 988 #endif /* NO_CONFIG_WRITE */
 989
 990
 991 static int wpa_config_parse_auth_alg(const struct parse_data *data,
 992                                      struct wpa_ssid *ssid, int line,
 993                                      const char *value)
 994 {
 995         int val = 0, last, errors = 0;
 996         char *start, *end, *buf;
 997
 998         buf = os_strdup(value);
 999         if (buf == NULL)
1000                 return -1;
1001         start = buf;
1002
1003         while (*start != '\0') {
1004                 while (*start == ' ' || *start == '\t')
1005                         start++;
1006                 if (*start == '\0')
1007                         break;
1008                 end = start;
1009                 while (*end != ' ' && *end != '\t' && *end != '\0')
1010                         end++;
1011                 last = *end == '\0';
1012                 *end = '\0';
1013                 if (os_strcmp(start, "OPEN") == 0)
1014                         val |= WPA_AUTH_ALG_OPEN;
1015                 else if (os_strcmp(start, "SHARED") == 0)
1016                         val |= WPA_AUTH_ALG_SHARED;
1017                 else if (os_strcmp(start, "LEAP") == 0)
1018                         val |= WPA_AUTH_ALG_LEAP;
1019                 else {
1020                         wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
1021                                    line, start);
1022                         errors++;
1023                 }
1024
1025                 if (last)
1026                         break;
1027                 start = end + 1;
1028         }
1029         os_free(buf);
1030
1031         if (val == 0) {
1032                 wpa_printf(MSG_ERROR,
1033                            "Line %d: no auth_alg values configured.", line);
1034                 errors++;
1035         }
1036
1037         wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
1038         ssid->auth_alg = val;
1039         return errors ? -1 : 0;
1040 }
1041
1042
1043 #ifndef NO_CONFIG_WRITE
1044 static char * wpa_config_write_auth_alg(const struct parse_data *data,
1045                                         struct wpa_ssid *ssid)
1046 {
1047         char *buf, *pos, *end;
1048         int ret;
1049
1050         pos = buf = os_zalloc(30);
1051         if (buf == NULL)
1052                 return NULL;
1053         end = buf + 30;
1054
1055         if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
1056                 ret = os_snprintf(pos, end - pos, "%sOPEN",
1057                                   pos == buf ? "" : " ");
1058                 if (os_snprintf_error(end - pos, ret)) {
1059                         end[-1] = '\0';
1060                         return buf;
1061                 }
1062                 pos += ret;
1063         }
1064
1065         if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
1066                 ret = os_snprintf(pos, end - pos, "%sSHARED",
1067                                   pos == buf ? "" : " ");
1068                 if (os_snprintf_error(end - pos, ret)) {
1069                         end[-1] = '\0';
1070                         return buf;
1071                 }
1072                 pos += ret;
1073         }
1074
1075         if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
1076                 ret = os_snprintf(pos, end - pos, "%sLEAP",
1077                                   pos == buf ? "" : " ");
1078                 if (os_snprintf_error(end - pos, ret)) {
1079                         end[-1] = '\0';
1080                         return buf;
1081                 }
1082                 pos += ret;
1083         }
1084
1085         if (pos == buf) {
1086                 os_free(buf);
1087                 buf = NULL;
1088         }
1089
1090         return buf;
1091 }
1092 #endif /* NO_CONFIG_WRITE */
1093
1094
1095 static int * wpa_config_parse_int_array(const char *value)
1096 {
1097         int *freqs;
1098         size_t used, len;
1099         const char *pos;
1100
1101         used = 0;
1102         len = 10;
1103         freqs = os_calloc(len + 1, sizeof(int));
1104         if (freqs == NULL)
1105                 return NULL;
1106
1107         pos = value;
1108         while (pos) {
1109                 while (*pos == ' ')
1110                         pos++;
1111                 if (used == len) {
1112                         int *n;
1113                         size_t i;
1114                         n = os_realloc_array(freqs, len * 2 + 1, sizeof(int));
1115                         if (n == NULL) {
1116                                 os_free(freqs);
1117                                 return NULL;
1118                         }
1119                         for (i = len; i <= len * 2; i++)
1120                                 n[i] = 0;
1121                         freqs = n;
1122                         len *= 2;
1123                 }
1124
1125                 freqs[used] = atoi(pos);
1126                 if (freqs[used] == 0)
1127                         break;
1128                 used++;
1129                 pos = os_strchr(pos + 1, ' ');
1130         }
1131
1132         return freqs;
1133 }
1134
1135
1136 static int wpa_config_parse_scan_freq(const struct parse_data *data,
1137                                       struct wpa_ssid *ssid, int line,
1138                                       const char *value)
1139 {
1140         int *freqs;
1141
1142         freqs = wpa_config_parse_int_array(value);
1143         if (freqs == NULL)
1144                 return -1;
1145         if (freqs[0] == 0) {
1146                 os_free(freqs);
1147                 freqs = NULL;
1148         }
1149         os_free(ssid->scan_freq);
1150         ssid->scan_freq = freqs;
1151
1152         return 0;
1153 }
1154
1155
1156 static int wpa_config_parse_freq_list(const struct parse_data *data,
1157                                       struct wpa_ssid *ssid, int line,
1158                                       const char *value)
1159 {
1160         int *freqs;
1161
1162         freqs = wpa_config_parse_int_array(value);
1163         if (freqs == NULL)
1164                 return -1;
1165         if (freqs[0] == 0) {
1166                 os_free(freqs);
1167                 freqs = NULL;
1168         }
1169         os_free(ssid->freq_list);
1170         ssid->freq_list = freqs;
1171
1172         return 0;
1173 }
1174
1175
1176 #ifndef NO_CONFIG_WRITE
1177 static char * wpa_config_write_freqs(const struct parse_data *data,
1178                                      const int *freqs)
1179 {
1180         char *buf, *pos, *end;
1181         int i, ret;
1182         size_t count;
1183
1184         if (freqs == NULL)
1185                 return NULL;
1186
1187         count = 0;
1188         for (i = 0; freqs[i]; i++)
1189                 count++;
1190
1191         pos = buf = os_zalloc(10 * count + 1);
1192         if (buf == NULL)
1193                 return NULL;
1194         end = buf + 10 * count + 1;
1195
1196         for (i = 0; freqs[i]; i++) {
1197                 ret = os_snprintf(pos, end - pos, "%s%u",
1198                                   i == 0 ? "" : " ", freqs[i]);
1199                 if (os_snprintf_error(end - pos, ret)) {
1200                         end[-1] = '\0';
1201                         return buf;
1202                 }
1203                 pos += ret;
1204         }
1205
1206         return buf;
1207 }
1208
1209
1210 static char * wpa_config_write_scan_freq(const struct parse_data *data,
1211                                          struct wpa_ssid *ssid)
1212 {
1213         return wpa_config_write_freqs(data, ssid->scan_freq);
1214 }
1215
1216
1217 static char * wpa_config_write_freq_list(const struct parse_data *data,
1218                                          struct wpa_ssid *ssid)
1219 {
1220         return wpa_config_write_freqs(data, ssid->freq_list);
1221 }
1222 #endif /* NO_CONFIG_WRITE */
1223
1224
1225 #ifdef IEEE8021X_EAPOL
1226 static int wpa_config_parse_eap(const struct parse_data *data,
1227                                 struct wpa_ssid *ssid, int line,
1228                                 const char *value)
1229 {
1230         int last, errors = 0;
1231         char *start, *end, *buf;
1232         struct eap_method_type *methods = NULL, *tmp;
1233         size_t num_methods = 0;
1234
1235         buf = os_strdup(value);
1236         if (buf == NULL)
1237                 return -1;
1238         start = buf;
1239
1240         while (*start != '\0') {
1241                 while (*start == ' ' || *start == '\t')
1242                         start++;
1243                 if (*start == '\0')
1244                         break;
1245                 end = start;
1246                 while (*end != ' ' && *end != '\t' && *end != '\0')
1247                         end++;
1248                 last = *end == '\0';
1249                 *end = '\0';
1250                 tmp = methods;
1251                 methods = os_realloc_array(methods, num_methods + 1,
1252                                            sizeof(*methods));
1253                 if (methods == NULL) {
1254                         os_free(tmp);
1255                         os_free(buf);
1256                         return -1;
1257                 }
1258                 methods[num_methods].method = eap_peer_get_type(
1259                         start, &methods[num_methods].vendor);
1260                 if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1261                     methods[num_methods].method == EAP_TYPE_NONE) {
1262                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
1263                                    "'%s'", line, start);
1264                         wpa_printf(MSG_ERROR, "You may need to add support for"
1265                                    " this EAP method during wpa_supplicant\n"
1266                                    "build time configuration.\n"
1267                                    "See README for more information.");
1268                         errors++;
1269                 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1270                            methods[num_methods].method == EAP_TYPE_LEAP)
1271                         ssid->leap++;
1272                 else
1273                         ssid->non_leap++;
1274                 num_methods++;
1275                 if (last)
1276                         break;
1277                 start = end + 1;
1278         }
1279         os_free(buf);
1280
1281         tmp = methods;
1282         methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods));
1283         if (methods == NULL) {
1284                 os_free(tmp);
1285                 return -1;
1286         }
1287         methods[num_methods].vendor = EAP_VENDOR_IETF;
1288         methods[num_methods].method = EAP_TYPE_NONE;
1289         num_methods++;
1290
1291         wpa_hexdump(MSG_MSGDUMP, "eap methods",
1292                     (u8 *) methods, num_methods * sizeof(*methods));
1293         os_free(ssid->eap.eap_methods);
1294         ssid->eap.eap_methods = methods;
1295         return errors ? -1 : 0;
1296 }
1297
1298
1299 static char * wpa_config_write_eap(const struct parse_data *data,
1300                                    struct wpa_ssid *ssid)
1301 {
1302         int i, ret;
1303         char *buf, *pos, *end;
1304         const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
1305         const char *name;
1306
1307         if (eap_methods == NULL)
1308                 return NULL;
1309
1310         pos = buf = os_zalloc(100);
1311         if (buf == NULL)
1312                 return NULL;
1313         end = buf + 100;
1314
1315         for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
1316                      eap_methods[i].method != EAP_TYPE_NONE; i++) {
1317                 name = eap_get_name(eap_methods[i].vendor,
1318                                     eap_methods[i].method);
1319                 if (name) {
1320                         ret = os_snprintf(pos, end - pos, "%s%s",
1321                                           pos == buf ? "" : " ", name);
1322                         if (os_snprintf_error(end - pos, ret))
1323                                 break;
1324                         pos += ret;
1325                 }
1326         }
1327
1328         end[-1] = '\0';
1329
1330         return buf;
1331 }
1332
1333
1334 static int wpa_config_parse_password(const struct parse_data *data,
1335                                      struct wpa_ssid *ssid, int line,
1336                                      const char *value)
1337 {
1338         u8 *hash;
1339
1340         if (os_strcmp(value, "NULL") == 0) {
1341                 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
1342                 bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1343                 ssid->eap.password = NULL;
1344                 ssid->eap.password_len = 0;
1345                 return 0;
1346         }
1347
1348 #ifdef CONFIG_EXT_PASSWORD
1349         if (os_strncmp(value, "ext:", 4) == 0) {
1350                 char *name = os_strdup(value + 4);
1351                 if (name == NULL)
1352                         return -1;
1353                 bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1354                 ssid->eap.password = (u8 *) name;
1355                 ssid->eap.password_len = os_strlen(name);
1356                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1357                 ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD;
1358                 return 0;
1359         }
1360 #endif /* CONFIG_EXT_PASSWORD */
1361
1362         if (os_strncmp(value, "hash:", 5) != 0) {
1363                 char *tmp;
1364                 size_t res_len;
1365
1366                 tmp = wpa_config_parse_string(value, &res_len);
1367                 if (tmp == NULL) {
1368                         wpa_printf(MSG_ERROR, "Line %d: failed to parse "
1369                                    "password.", line);
1370                         return -1;
1371                 }
1372                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
1373                                       (u8 *) tmp, res_len);
1374
1375                 bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1376                 ssid->eap.password = (u8 *) tmp;
1377                 ssid->eap.password_len = res_len;
1378                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1379                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1380
1381                 return 0;
1382         }
1383
1384
1385         /* NtPasswordHash: hash:<32 hex digits> */
1386         if (os_strlen(value + 5) != 2 * 16) {
1387                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length "
1388                            "(expected 32 hex digits)", line);
1389                 return -1;
1390         }
1391
1392         hash = os_malloc(16);
1393         if (hash == NULL)
1394                 return -1;
1395
1396         if (hexstr2bin(value + 5, hash, 16)) {
1397                 os_free(hash);
1398                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
1399                 return -1;
1400         }
1401
1402         wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
1403
1404         bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1405         ssid->eap.password = hash;
1406         ssid->eap.password_len = 16;
1407         ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1408         ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1409
1410         return 0;
1411 }
1412
1413
1414 static char * wpa_config_write_password(const struct parse_data *data,
1415                                         struct wpa_ssid *ssid)
1416 {
1417         char *buf;
1418
1419         if (ssid->eap.password == NULL)
1420                 return NULL;
1421
1422 #ifdef CONFIG_EXT_PASSWORD
1423         if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) {
1424                 buf = os_zalloc(4 + ssid->eap.password_len + 1);
1425                 if (buf == NULL)
1426                         return NULL;
1427                 os_memcpy(buf, "ext:", 4);
1428                 os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len);
1429                 return buf;
1430         }
1431 #endif /* CONFIG_EXT_PASSWORD */
1432
1433         if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
1434                 return wpa_config_write_string(
1435                         ssid->eap.password, ssid->eap.password_len);
1436         }
1437
1438         buf = os_malloc(5 + 32 + 1);
1439         if (buf == NULL)
1440                 return NULL;
1441
1442         os_memcpy(buf, "hash:", 5);
1443         wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
1444
1445         return buf;
1446 }
1447 #endif /* IEEE8021X_EAPOL */
1448
1449
1450 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
1451                                     const char *value, int idx)
1452 {
1453         char *buf, title[20];
1454         int res;
1455
1456         buf = wpa_config_parse_string(value, len);
1457         if (buf == NULL) {
1458                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
1459                            line, idx, value);
1460                 return -1;
1461         }
1462         if (*len > MAX_WEP_KEY_LEN) {
1463                 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
1464                            line, idx, value);
1465                 os_free(buf);
1466                 return -1;
1467         }
1468         if (*len && *len != 5 && *len != 13 && *len != 16) {
1469                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - "
1470                            "this network block will be ignored",
1471                            line, (unsigned int) *len);
1472         }
1473         os_memcpy(key, buf, *len);
1474         str_clear_free(buf);
1475         res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
1476         if (!os_snprintf_error(sizeof(title), res))
1477                 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
1478         return 0;
1479 }
1480
1481
1482 static int wpa_config_parse_wep_key0(const struct parse_data *data,
1483                                      struct wpa_ssid *ssid, int line,
1484                                      const char *value)
1485 {
1486         return wpa_config_parse_wep_key(ssid->wep_key[0],
1487                                         &ssid->wep_key_len[0], line,
1488                                         value, 0);
1489 }
1490
1491
1492 static int wpa_config_parse_wep_key1(const struct parse_data *data,
1493                                      struct wpa_ssid *ssid, int line,
1494                                      const char *value)
1495 {
1496         return wpa_config_parse_wep_key(ssid->wep_key[1],
1497                                         &ssid->wep_key_len[1], line,
1498                                         value, 1);
1499 }
1500
1501
1502 static int wpa_config_parse_wep_key2(const struct parse_data *data,
1503                                      struct wpa_ssid *ssid, int line,
1504                                      const char *value)
1505 {
1506         return wpa_config_parse_wep_key(ssid->wep_key[2],
1507                                         &ssid->wep_key_len[2], line,
1508                                         value, 2);
1509 }
1510
1511
1512 static int wpa_config_parse_wep_key3(const struct parse_data *data,
1513                                      struct wpa_ssid *ssid, int line,
1514                                      const char *value)
1515 {
1516         return wpa_config_parse_wep_key(ssid->wep_key[3],
1517                                         &ssid->wep_key_len[3], line,
1518                                         value, 3);
1519 }
1520
1521
1522 #ifndef NO_CONFIG_WRITE
1523 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
1524 {
1525         if (ssid->wep_key_len[idx] == 0)
1526                 return NULL;
1527         return wpa_config_write_string(ssid->wep_key[idx],
1528                                        ssid->wep_key_len[idx]);
1529 }
1530
1531
1532 static char * wpa_config_write_wep_key0(const struct parse_data *data,
1533                                         struct wpa_ssid *ssid)
1534 {
1535         return wpa_config_write_wep_key(ssid, 0);
1536 }
1537
1538
1539 static char * wpa_config_write_wep_key1(const struct parse_data *data,
1540                                         struct wpa_ssid *ssid)
1541 {
1542         return wpa_config_write_wep_key(ssid, 1);
1543 }
1544
1545
1546 static char * wpa_config_write_wep_key2(const struct parse_data *data,
1547                                         struct wpa_ssid *ssid)
1548 {
1549         return wpa_config_write_wep_key(ssid, 2);
1550 }
1551
1552
1553 static char * wpa_config_write_wep_key3(const struct parse_data *data,
1554                                         struct wpa_ssid *ssid)
1555 {
1556         return wpa_config_write_wep_key(ssid, 3);
1557 }
1558 #endif /* NO_CONFIG_WRITE */
1559
1560
1561 #ifdef CONFIG_P2P
1562
1563 static int wpa_config_parse_go_p2p_dev_addr(const struct parse_data *data,
1564                                             struct wpa_ssid *ssid, int line,
1565                                             const char *value)
1566 {
1567         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
1568             os_strcmp(value, "any") == 0) {
1569                 os_memset(ssid->go_p2p_dev_addr, 0, ETH_ALEN);
1570                 wpa_printf(MSG_MSGDUMP, "GO P2P Device Address any");
1571                 return 0;
1572         }
1573         if (hwaddr_aton(value, ssid->go_p2p_dev_addr)) {
1574                 wpa_printf(MSG_ERROR, "Line %d: Invalid GO P2P Device Address '%s'.",
1575                            line, value);
1576                 return -1;
1577         }
1578         ssid->bssid_set = 1;
1579         wpa_printf(MSG_MSGDUMP, "GO P2P Device Address " MACSTR,
1580                    MAC2STR(ssid->go_p2p_dev_addr));
1581         return 0;
1582 }
1583
1584
1585 #ifndef NO_CONFIG_WRITE
1586 static char * wpa_config_write_go_p2p_dev_addr(const struct parse_data *data,
1587                                                struct wpa_ssid *ssid)
1588 {
1589         char *value;
1590         int res;
1591
1592         if (is_zero_ether_addr(ssid->go_p2p_dev_addr))
1593                 return NULL;
1594
1595         value = os_malloc(20);
1596         if (value == NULL)
1597                 return NULL;
1598         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->go_p2p_dev_addr));
1599         if (os_snprintf_error(20, res)) {
1600                 os_free(value);
1601                 return NULL;
1602         }
1603         value[20 - 1] = '\0';
1604         return value;
1605 }
1606 #endif /* NO_CONFIG_WRITE */
1607
1608
1609 static int wpa_config_parse_p2p_client_list(const struct parse_data *data,
1610                                             struct wpa_ssid *ssid, int line,
1611                                             const char *value)
1612 {
1613         return wpa_config_parse_addr_list(data, line, value,
1614                                           &ssid->p2p_client_list,
1615                                           &ssid->num_p2p_clients,
1616                                           "p2p_client_list", 0, 0);
1617 }
1618
1619
1620 #ifndef NO_CONFIG_WRITE
1621 static char * wpa_config_write_p2p_client_list(const struct parse_data *data,
1622                                                struct wpa_ssid *ssid)
1623 {
1624         return wpa_config_write_addr_list(data, ssid->p2p_client_list,
1625                                           ssid->num_p2p_clients,
1626                                           "p2p_client_list");
1627 }
1628 #endif /* NO_CONFIG_WRITE */
1629
1630
1631 static int wpa_config_parse_psk_list(const struct parse_data *data,
1632                                      struct wpa_ssid *ssid, int line,
1633                                      const char *value)
1634 {
1635         struct psk_list_entry *p;
1636         const char *pos;
1637
1638         p = os_zalloc(sizeof(*p));
1639         if (p == NULL)
1640                 return -1;
1641
1642         pos = value;
1643         if (os_strncmp(pos, "P2P-", 4) == 0) {
1644                 p->p2p = 1;
1645                 pos += 4;
1646         }
1647
1648         if (hwaddr_aton(pos, p->addr)) {
1649                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list address '%s'",
1650                            line, pos);
1651                 os_free(p);
1652                 return -1;
1653         }
1654         pos += 17;
1655         if (*pos != '-') {
1656                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list '%s'",
1657                            line, pos);
1658                 os_free(p);
1659                 return -1;
1660         }
1661         pos++;
1662
1663         if (hexstr2bin(pos, p->psk, PMK_LEN) || pos[PMK_LEN * 2] != '\0') {
1664                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list PSK '%s'",
1665                            line, pos);
1666                 os_free(p);
1667                 return -1;
1668         }
1669
1670         dl_list_add(&ssid->psk_list, &p->list);
1671
1672         return 0;
1673 }
1674
1675
1676 #ifndef NO_CONFIG_WRITE
1677 static char * wpa_config_write_psk_list(const struct parse_data *data,
1678                                         struct wpa_ssid *ssid)
1679 {
1680         return NULL;
1681 }
1682 #endif /* NO_CONFIG_WRITE */
1683
1684 #endif /* CONFIG_P2P */
1685
1686
1687 #ifdef CONFIG_MESH
1688
1689 static int wpa_config_parse_mesh_basic_rates(const struct parse_data *data,
1690                                              struct wpa_ssid *ssid, int line,
1691                                              const char *value)
1692 {
1693         int *rates = wpa_config_parse_int_array(value);
1694
1695         if (rates == NULL) {
1696                 wpa_printf(MSG_ERROR, "Line %d: Invalid mesh_basic_rates '%s'",
1697                            line, value);
1698                 return -1;
1699         }
1700         if (rates[0] == 0) {
1701                 os_free(rates);
1702                 rates = NULL;
1703         }
1704
1705         os_free(ssid->mesh_basic_rates);
1706         ssid->mesh_basic_rates = rates;
1707
1708         return 0;
1709 }
1710
1711
1712 #ifndef NO_CONFIG_WRITE
1713
1714 static char * wpa_config_write_mesh_basic_rates(const struct parse_data *data,
1715                                                 struct wpa_ssid *ssid)
1716 {
1717         return wpa_config_write_freqs(data, ssid->mesh_basic_rates);
1718 }
1719
1720 #endif /* NO_CONFIG_WRITE */
1721
1722 #endif /* CONFIG_MESH */
1723
1724
1725 /* Helper macros for network block parser */
1726
1727 #ifdef OFFSET
1728 #undef OFFSET
1729 #endif /* OFFSET */
1730 /* OFFSET: Get offset of a variable within the wpa_ssid structure */
1731 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
1732
1733 /* STR: Define a string variable for an ASCII string; f = field name */
1734 #ifdef NO_CONFIG_WRITE
1735 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
1736 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f)
1737 #else /* NO_CONFIG_WRITE */
1738 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
1739 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f)
1740 #endif /* NO_CONFIG_WRITE */
1741 #define STR(f) _STR(f), NULL, NULL, NULL, 0
1742 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0
1743 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
1744 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1
1745
1746 /* STR_LEN: Define a string variable with a separate variable for storing the
1747  * data length. Unlike STR(), this can be used to store arbitrary binary data
1748  * (i.e., even nul termination character). */
1749 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
1750 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len)
1751 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
1752 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0
1753 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
1754
1755 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
1756  * explicitly specified. */
1757 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
1758 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
1759 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
1760
1761 #ifdef NO_CONFIG_WRITE
1762 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
1763 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0
1764 #else /* NO_CONFIG_WRITE */
1765 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1766         OFFSET(f), (void *) 0
1767 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1768         OFFSET(eap.f), (void *) 0
1769 #endif /* NO_CONFIG_WRITE */
1770
1771 /* INT: Define an integer variable */
1772 #define INT(f) _INT(f), NULL, NULL, 0
1773 #define INTe(f) _INTe(f), NULL, NULL, 0
1774
1775 /* INT_RANGE: Define an integer variable with allowed value range */
1776 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
1777
1778 /* FUNC: Define a configuration variable that uses a custom function for
1779  * parsing and writing the value. */
1780 #ifdef NO_CONFIG_WRITE
1781 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
1782 #else /* NO_CONFIG_WRITE */
1783 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
1784         NULL, NULL, NULL, NULL
1785 #endif /* NO_CONFIG_WRITE */
1786 #define FUNC(f) _FUNC(f), 0
1787 #define FUNC_KEY(f) _FUNC(f), 1
1788
1789 /*
1790  * Table of network configuration variables. This table is used to parse each
1791  * network configuration variable, e.g., each line in wpa_supplicant.conf file
1792  * that is inside a network block.
1793  *
1794  * This table is generated using the helper macros defined above and with
1795  * generous help from the C pre-processor. The field name is stored as a string
1796  * into .name and for STR and INT types, the offset of the target buffer within
1797  * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
1798  * offset to the field containing the length of the configuration variable.
1799  * .param3 and .param4 can be used to mark the allowed range (length for STR
1800  * and value for INT).
1801  *
1802  * For each configuration line in wpa_supplicant.conf, the parser goes through
1803  * this table and select the entry that matches with the field name. The parser
1804  * function (.parser) is then called to parse the actual value of the field.
1805  *
1806  * This kind of mechanism makes it easy to add new configuration parameters,
1807  * since only one line needs to be added into this table and into the
1808  * struct wpa_ssid definition if the new variable is either a string or
1809  * integer. More complex types will need to use their own parser and writer
1810  * functions.
1811  */
1812 static const struct parse_data ssid_fields[] = {
1813         { STR_RANGE(ssid, 0, MAX_SSID_LEN) },
1814         { INT_RANGE(scan_ssid, 0, 1) },
1815         { FUNC(bssid) },
1816         { FUNC(bssid_blacklist) },
1817         { FUNC(bssid_whitelist) },
1818         { FUNC_KEY(psk) },
1819         { FUNC(proto) },
1820         { FUNC(key_mgmt) },
1821         { INT(bg_scan_period) },
1822         { FUNC(pairwise) },
1823         { FUNC(group) },
1824         { FUNC(auth_alg) },
1825         { FUNC(scan_freq) },
1826         { FUNC(freq_list) },
1827 #ifdef IEEE8021X_EAPOL
1828         { FUNC(eap) },
1829         { STR_LENe(identity) },
1830         { STR_LENe(anonymous_identity) },
1831         { FUNC_KEY(password) },
1832         { STRe(ca_cert) },
1833         { STRe(ca_path) },
1834         { STRe(client_cert) },
1835         { STRe(private_key) },
1836         { STR_KEYe(private_key_passwd) },
1837         { STRe(dh_file) },
1838         { STRe(subject_match) },
1839         { STRe(altsubject_match) },
1840         { STRe(domain_suffix_match) },
1841         { STRe(domain_match) },
1842         { STRe(ca_cert2) },
1843         { STRe(ca_path2) },
1844         { STRe(client_cert2) },
1845         { STRe(private_key2) },
1846         { STR_KEYe(private_key2_passwd) },
1847         { STRe(dh_file2) },
1848         { STRe(subject_match2) },
1849         { STRe(altsubject_match2) },
1850         { STRe(domain_suffix_match2) },
1851         { STRe(domain_match2) },
1852         { STRe(phase1) },
1853         { STRe(phase2) },
1854         { STRe(pcsc) },
1855         { STR_KEYe(pin) },
1856         { STRe(engine_id) },
1857         { STRe(key_id) },
1858         { STRe(cert_id) },
1859         { STRe(ca_cert_id) },
1860         { STR_KEYe(pin2) },
1861         { STRe(engine2_id) },
1862         { STRe(key2_id) },
1863         { STRe(cert2_id) },
1864         { STRe(ca_cert2_id) },
1865         { INTe(engine) },
1866         { INTe(engine2) },
1867         { INT(eapol_flags) },
1868         { INTe(sim_num) },
1869         { STRe(openssl_ciphers) },
1870         { INTe(erp) },
1871 #endif /* IEEE8021X_EAPOL */
1872         { FUNC_KEY(wep_key0) },
1873         { FUNC_KEY(wep_key1) },
1874         { FUNC_KEY(wep_key2) },
1875         { FUNC_KEY(wep_key3) },
1876         { INT(wep_tx_keyidx) },
1877         { INT(priority) },
1878 #ifdef IEEE8021X_EAPOL
1879         { INT(eap_workaround) },
1880         { STRe(pac_file) },
1881         { INTe(fragment_size) },
1882         { INTe(ocsp) },
1883 #endif /* IEEE8021X_EAPOL */
1884 #ifdef CONFIG_MESH
1885         { INT_RANGE(mode, 0, 5) },
1886         { INT_RANGE(no_auto_peer, 0, 1) },
1887 #else /* CONFIG_MESH */
1888         { INT_RANGE(mode, 0, 4) },
1889 #endif /* CONFIG_MESH */
1890         { INT_RANGE(proactive_key_caching, 0, 1) },
1891         { INT_RANGE(disabled, 0, 2) },
1892         { STR(id_str) },
1893 #ifdef CONFIG_IEEE80211W
1894         { INT_RANGE(ieee80211w, 0, 2) },
1895 #endif /* CONFIG_IEEE80211W */
1896         { INT_RANGE(peerkey, 0, 1) },
1897         { INT_RANGE(mixed_cell, 0, 1) },
1898         { INT_RANGE(frequency, 0, 65000) },
1899         { INT_RANGE(fixed_freq, 0, 1) },
1900 #ifdef CONFIG_MESH
1901         { FUNC(mesh_basic_rates) },
1902         { INT(dot11MeshMaxRetries) },
1903         { INT(dot11MeshRetryTimeout) },
1904         { INT(dot11MeshConfirmTimeout) },
1905         { INT(dot11MeshHoldingTimeout) },
1906 #endif /* CONFIG_MESH */
1907         { INT(wpa_ptk_rekey) },
1908         { STR(bgscan) },
1909         { INT_RANGE(ignore_broadcast_ssid, 0, 2) },
1910 #ifdef CONFIG_P2P
1911         { FUNC(go_p2p_dev_addr) },
1912         { FUNC(p2p_client_list) },
1913         { FUNC(psk_list) },
1914 #endif /* CONFIG_P2P */
1915 #ifdef CONFIG_HT_OVERRIDES
1916         { INT_RANGE(disable_ht, 0, 1) },
1917         { INT_RANGE(disable_ht40, -1, 1) },
1918         { INT_RANGE(disable_sgi, 0, 1) },
1919         { INT_RANGE(disable_ldpc, 0, 1) },
1920         { INT_RANGE(ht40_intolerant, 0, 1) },
1921         { INT_RANGE(disable_max_amsdu, -1, 1) },
1922         { INT_RANGE(ampdu_factor, -1, 3) },
1923         { INT_RANGE(ampdu_density, -1, 7) },
1924         { STR(ht_mcs) },
1925 #endif /* CONFIG_HT_OVERRIDES */
1926 #ifdef CONFIG_VHT_OVERRIDES
1927         { INT_RANGE(disable_vht, 0, 1) },
1928         { INT(vht_capa) },
1929         { INT(vht_capa_mask) },
1930         { INT_RANGE(vht_rx_mcs_nss_1, -1, 3) },
1931         { INT_RANGE(vht_rx_mcs_nss_2, -1, 3) },
1932         { INT_RANGE(vht_rx_mcs_nss_3, -1, 3) },
1933         { INT_RANGE(vht_rx_mcs_nss_4, -1, 3) },
1934         { INT_RANGE(vht_rx_mcs_nss_5, -1, 3) },
1935         { INT_RANGE(vht_rx_mcs_nss_6, -1, 3) },
1936         { INT_RANGE(vht_rx_mcs_nss_7, -1, 3) },
1937         { INT_RANGE(vht_rx_mcs_nss_8, -1, 3) },
1938         { INT_RANGE(vht_tx_mcs_nss_1, -1, 3) },
1939         { INT_RANGE(vht_tx_mcs_nss_2, -1, 3) },
1940         { INT_RANGE(vht_tx_mcs_nss_3, -1, 3) },
1941         { INT_RANGE(vht_tx_mcs_nss_4, -1, 3) },
1942         { INT_RANGE(vht_tx_mcs_nss_5, -1, 3) },
1943         { INT_RANGE(vht_tx_mcs_nss_6, -1, 3) },
1944         { INT_RANGE(vht_tx_mcs_nss_7, -1, 3) },
1945         { INT_RANGE(vht_tx_mcs_nss_8, -1, 3) },
1946 #endif /* CONFIG_VHT_OVERRIDES */
1947         { INT(ap_max_inactivity) },
1948         { INT(dtim_period) },
1949         { INT(beacon_int) },
1950 #ifdef CONFIG_MACSEC
1951         { INT_RANGE(macsec_policy, 0, 1) },
1952 #endif /* CONFIG_MACSEC */
1953 #ifdef CONFIG_HS20
1954         { INT(update_identifier) },
1955 #endif /* CONFIG_HS20 */
1956         { INT_RANGE(mac_addr, 0, 2) },
1957 };
1958
1959 #undef OFFSET
1960 #undef _STR
1961 #undef STR
1962 #undef STR_KEY
1963 #undef _STR_LEN
1964 #undef STR_LEN
1965 #undef STR_LEN_KEY
1966 #undef _STR_RANGE
1967 #undef STR_RANGE
1968 #undef STR_RANGE_KEY
1969 #undef _INT
1970 #undef INT
1971 #undef INT_RANGE
1972 #undef _FUNC
1973 #undef FUNC
1974 #undef FUNC_KEY
1975 #define NUM_SSID_FIELDS ARRAY_SIZE(ssid_fields)
1976
1977
1978 /**
1979  * wpa_config_add_prio_network - Add a network to priority lists
1980  * @config: Configuration data from wpa_config_read()
1981  * @ssid: Pointer to the network configuration to be added to the list
1982  * Returns: 0 on success, -1 on failure
1983  *
1984  * This function is used to add a network block to the priority list of
1985  * networks. This must be called for each network when reading in the full
1986  * configuration. In addition, this can be used indirectly when updating
1987  * priorities by calling wpa_config_update_prio_list().
1988  */
1989 int wpa_config_add_prio_network(struct wpa_config *config,
1990                                 struct wpa_ssid *ssid)
1991 {
1992         int prio;
1993         struct wpa_ssid *prev, **nlist;
1994
1995         /*
1996          * Add to an existing priority list if one is available for the
1997          * configured priority level for this network.
1998          */
1999         for (prio = 0; prio < config->num_prio; prio++) {
2000                 prev = config->pssid[prio];
2001                 if (prev->priority == ssid->priority) {
2002                         while (prev->pnext)
2003                                 prev = prev->pnext;
2004                         prev->pnext = ssid;
2005                         return 0;
2006                 }
2007         }
2008
2009         /* First network for this priority - add a new priority list */
2010         nlist = os_realloc_array(config->pssid, config->num_prio + 1,
2011                                  sizeof(struct wpa_ssid *));
2012         if (nlist == NULL)
2013                 return -1;
2014
2015         for (prio = 0; prio < config->num_prio; prio++) {
2016                 if (nlist[prio]->priority < ssid->priority) {
2017                         os_memmove(&nlist[prio + 1], &nlist[prio],
2018                                    (config->num_prio - prio) *
2019                                    sizeof(struct wpa_ssid *));
2020                         break;
2021                 }
2022         }
2023
2024         nlist[prio] = ssid;
2025         config->num_prio++;
2026         config->pssid = nlist;
2027
2028         return 0;
2029 }
2030
2031
2032 /**
2033  * wpa_config_update_prio_list - Update network priority list
2034  * @config: Configuration data from wpa_config_read()
2035  * Returns: 0 on success, -1 on failure
2036  *
2037  * This function is called to update the priority list of networks in the
2038  * configuration when a network is being added or removed. This is also called
2039  * if a priority for a network is changed.
2040  */
2041 int wpa_config_update_prio_list(struct wpa_config *config)
2042 {
2043         struct wpa_ssid *ssid;
2044         int ret = 0;
2045
2046         os_free(config->pssid);
2047         config->pssid = NULL;
2048         config->num_prio = 0;
2049
2050         ssid = config->ssid;
2051         while (ssid) {
2052                 ssid->pnext = NULL;
2053                 if (wpa_config_add_prio_network(config, ssid) < 0)
2054                         ret = -1;
2055                 ssid = ssid->next;
2056         }
2057
2058         return ret;
2059 }
2060
2061
2062 #ifdef IEEE8021X_EAPOL
2063 static void eap_peer_config_free(struct eap_peer_config *eap)
2064 {
2065         os_free(eap->eap_methods);
2066         bin_clear_free(eap->identity, eap->identity_len);
2067         os_free(eap->anonymous_identity);
2068         bin_clear_free(eap->password, eap->password_len);
2069         os_free(eap->ca_cert);
2070         os_free(eap->ca_path);
2071         os_free(eap->client_cert);
2072         os_free(eap->private_key);
2073         str_clear_free(eap->private_key_passwd);
2074         os_free(eap->dh_file);
2075         os_free(eap->subject_match);
2076         os_free(eap->altsubject_match);
2077         os_free(eap->domain_suffix_match);
2078         os_free(eap->domain_match);
2079         os_free(eap->ca_cert2);
2080         os_free(eap->ca_path2);
2081         os_free(eap->client_cert2);
2082         os_free(eap->private_key2);
2083         str_clear_free(eap->private_key2_passwd);
2084         os_free(eap->dh_file2);
2085         os_free(eap->subject_match2);
2086         os_free(eap->altsubject_match2);
2087         os_free(eap->domain_suffix_match2);
2088         os_free(eap->domain_match2);
2089         os_free(eap->phase1);
2090         os_free(eap->phase2);
2091         os_free(eap->pcsc);
2092         str_clear_free(eap->pin);
2093         os_free(eap->engine_id);
2094         os_free(eap->key_id);
2095         os_free(eap->cert_id);
2096         os_free(eap->ca_cert_id);
2097         os_free(eap->key2_id);
2098         os_free(eap->cert2_id);
2099         os_free(eap->ca_cert2_id);
2100         str_clear_free(eap->pin2);
2101         os_free(eap->engine2_id);
2102         os_free(eap->otp);
2103         os_free(eap->pending_req_otp);
2104         os_free(eap->pac_file);
2105         bin_clear_free(eap->new_password, eap->new_password_len);
2106         str_clear_free(eap->external_sim_resp);
2107         os_free(eap->openssl_ciphers);
2108 }
2109 #endif /* IEEE8021X_EAPOL */
2110
2111
2112 /**
2113  * wpa_config_free_ssid - Free network/ssid configuration data
2114  * @ssid: Configuration data for the network
2115  *
2116  * This function frees all resources allocated for the network configuration
2117  * data.
2118  */
2119 void wpa_config_free_ssid(struct wpa_ssid *ssid)
2120 {
2121         struct psk_list_entry *psk;
2122
2123         os_free(ssid->ssid);
2124         str_clear_free(ssid->passphrase);
2125         os_free(ssid->ext_psk);
2126 #ifdef IEEE8021X_EAPOL
2127         eap_peer_config_free(&ssid->eap);
2128 #endif /* IEEE8021X_EAPOL */
2129         os_free(ssid->id_str);
2130         os_free(ssid->scan_freq);
2131         os_free(ssid->freq_list);
2132         os_free(ssid->bgscan);
2133         os_free(ssid->p2p_client_list);
2134         os_free(ssid->bssid_blacklist);
2135         os_free(ssid->bssid_whitelist);
2136 #ifdef CONFIG_HT_OVERRIDES
2137         os_free(ssid->ht_mcs);
2138 #endif /* CONFIG_HT_OVERRIDES */
2139 #ifdef CONFIG_MESH
2140         os_free(ssid->mesh_basic_rates);
2141 #endif /* CONFIG_MESH */
2142         while ((psk = dl_list_first(&ssid->psk_list, struct psk_list_entry,
2143                                     list))) {
2144                 dl_list_del(&psk->list);
2145                 bin_clear_free(psk, sizeof(*psk));
2146         }
2147         bin_clear_free(ssid, sizeof(*ssid));
2148 }
2149
2150
2151 void wpa_config_free_cred(struct wpa_cred *cred)
2152 {
2153         size_t i;
2154
2155         os_free(cred->realm);
2156         str_clear_free(cred->username);
2157         str_clear_free(cred->password);
2158         os_free(cred->ca_cert);
2159         os_free(cred->client_cert);
2160         os_free(cred->private_key);
2161         str_clear_free(cred->private_key_passwd);
2162         os_free(cred->imsi);
2163         str_clear_free(cred->milenage);
2164         for (i = 0; i < cred->num_domain; i++)
2165                 os_free(cred->domain[i]);
2166         os_free(cred->domain);
2167         os_free(cred->domain_suffix_match);
2168         os_free(cred->eap_method);
2169         os_free(cred->phase1);
2170         os_free(cred->phase2);
2171         os_free(cred->excluded_ssid);
2172         os_free(cred->roaming_partner);
2173         os_free(cred->provisioning_sp);
2174         for (i = 0; i < cred->num_req_conn_capab; i++)
2175                 os_free(cred->req_conn_capab_port[i]);
2176         os_free(cred->req_conn_capab_port);
2177         os_free(cred->req_conn_capab_proto);
2178         os_free(cred);
2179 }
2180
2181
2182 void wpa_config_flush_blobs(struct wpa_config *config)
2183 {
2184 #ifndef CONFIG_NO_CONFIG_BLOBS
2185         struct wpa_config_blob *blob, *prev;
2186
2187         blob = config->blobs;
2188         config->blobs = NULL;
2189         while (blob) {
2190                 prev = blob;
2191                 blob = blob->next;
2192                 wpa_config_free_blob(prev);
2193         }
2194 #endif /* CONFIG_NO_CONFIG_BLOBS */
2195 }
2196
2197
2198 /**
2199  * wpa_config_free - Free configuration data
2200  * @config: Configuration data from wpa_config_read()
2201  *
2202  * This function frees all resources allocated for the configuration data by
2203  * wpa_config_read().
2204  */
2205 void wpa_config_free(struct wpa_config *config)
2206 {
2207         struct wpa_ssid *ssid, *prev = NULL;
2208         struct wpa_cred *cred, *cprev;
2209         int i;
2210
2211         ssid = config->ssid;
2212         while (ssid) {
2213                 prev = ssid;
2214                 ssid = ssid->next;
2215                 wpa_config_free_ssid(prev);
2216         }
2217
2218         cred = config->cred;
2219         while (cred) {
2220                 cprev = cred;
2221                 cred = cred->next;
2222                 wpa_config_free_cred(cprev);
2223         }
2224
2225         wpa_config_flush_blobs(config);
2226
2227         wpabuf_free(config->wps_vendor_ext_m1);
2228         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++)
2229                 wpabuf_free(config->wps_vendor_ext[i]);
2230         os_free(config->ctrl_interface);
2231         os_free(config->ctrl_interface_group);
2232         os_free(config->opensc_engine_path);
2233         os_free(config->pkcs11_engine_path);
2234         os_free(config->pkcs11_module_path);
2235         os_free(config->openssl_ciphers);
2236         os_free(config->pcsc_reader);
2237         str_clear_free(config->pcsc_pin);
2238         os_free(config->driver_param);
2239         os_free(config->device_name);
2240         os_free(config->manufacturer);
2241         os_free(config->model_name);
2242         os_free(config->model_number);
2243         os_free(config->serial_number);
2244         os_free(config->config_methods);
2245         os_free(config->p2p_ssid_postfix);
2246         os_free(config->pssid);
2247         os_free(config->p2p_pref_chan);
2248         os_free(config->p2p_no_go_freq.range);
2249         os_free(config->autoscan);
2250         os_free(config->freq_list);
2251         wpabuf_free(config->wps_nfc_dh_pubkey);
2252         wpabuf_free(config->wps_nfc_dh_privkey);
2253         wpabuf_free(config->wps_nfc_dev_pw);
2254         os_free(config->ext_password_backend);
2255         os_free(config->sae_groups);
2256         wpabuf_free(config->ap_vendor_elements);
2257         os_free(config->osu_dir);
2258         os_free(config->bgscan);
2259         os_free(config->wowlan_triggers);
2260         os_free(config);
2261 }
2262
2263
2264 /**
2265  * wpa_config_foreach_network - Iterate over each configured network
2266  * @config: Configuration data from wpa_config_read()
2267  * @func: Callback function to process each network
2268  * @arg: Opaque argument to pass to callback function
2269  *
2270  * Iterate over the set of configured networks calling the specified
2271  * function for each item. We guard against callbacks removing the
2272  * supplied network.
2273  */
2274 void wpa_config_foreach_network(struct wpa_config *config,
2275                                 void (*func)(void *, struct wpa_ssid *),
2276                                 void *arg)
2277 {
2278         struct wpa_ssid *ssid, *next;
2279
2280         ssid = config->ssid;
2281         while (ssid) {
2282                 next = ssid->next;
2283                 func(arg, ssid);
2284                 ssid = next;
2285         }
2286 }
2287
2288
2289 /**
2290  * wpa_config_get_network - Get configured network based on id
2291  * @config: Configuration data from wpa_config_read()
2292  * @id: Unique network id to search for
2293  * Returns: Network configuration or %NULL if not found
2294  */
2295 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
2296 {
2297         struct wpa_ssid *ssid;
2298
2299         ssid = config->ssid;
2300         while (ssid) {
2301                 if (id == ssid->id)
2302                         break;
2303                 ssid = ssid->next;
2304         }
2305
2306         return ssid;
2307 }
2308
2309
2310 /**
2311  * wpa_config_add_network - Add a new network with empty configuration
2312  * @config: Configuration data from wpa_config_read()
2313  * Returns: The new network configuration or %NULL if operation failed
2314  */
2315 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
2316 {
2317         int id;
2318         struct wpa_ssid *ssid, *last = NULL;
2319
2320         id = -1;
2321         ssid = config->ssid;
2322         while (ssid) {
2323                 if (ssid->id > id)
2324                         id = ssid->id;
2325                 last = ssid;
2326                 ssid = ssid->next;
2327         }
2328         id++;
2329
2330         ssid = os_zalloc(sizeof(*ssid));
2331         if (ssid == NULL)
2332                 return NULL;
2333         ssid->id = id;
2334         dl_list_init(&ssid->psk_list);
2335         if (last)
2336                 last->next = ssid;
2337         else
2338                 config->ssid = ssid;
2339
2340         wpa_config_update_prio_list(config);
2341
2342         return ssid;
2343 }
2344
2345
2346 /**
2347  * wpa_config_remove_network - Remove a configured network based on id
2348  * @config: Configuration data from wpa_config_read()
2349  * @id: Unique network id to search for
2350  * Returns: 0 on success, or -1 if the network was not found
2351  */
2352 int wpa_config_remove_network(struct wpa_config *config, int id)
2353 {
2354         struct wpa_ssid *ssid, *prev = NULL;
2355
2356         ssid = config->ssid;
2357         while (ssid) {
2358                 if (id == ssid->id)
2359                         break;
2360                 prev = ssid;
2361                 ssid = ssid->next;
2362         }
2363
2364         if (ssid == NULL)
2365                 return -1;
2366
2367         if (prev)
2368                 prev->next = ssid->next;
2369         else
2370                 config->ssid = ssid->next;
2371
2372         wpa_config_update_prio_list(config);
2373         wpa_config_free_ssid(ssid);
2374         return 0;
2375 }
2376
2377
2378 /**
2379  * wpa_config_set_network_defaults - Set network default values
2380  * @ssid: Pointer to network configuration data
2381  */
2382 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
2383 {
2384         ssid->proto = DEFAULT_PROTO;
2385         ssid->pairwise_cipher = DEFAULT_PAIRWISE;
2386         ssid->group_cipher = DEFAULT_GROUP;
2387         ssid->key_mgmt = DEFAULT_KEY_MGMT;
2388         ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
2389 #ifdef IEEE8021X_EAPOL
2390         ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
2391         ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
2392         ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
2393         ssid->eap.sim_num = DEFAULT_USER_SELECTED_SIM;
2394 #endif /* IEEE8021X_EAPOL */
2395 #ifdef CONFIG_MESH
2396         ssid->dot11MeshMaxRetries = DEFAULT_MESH_MAX_RETRIES;
2397         ssid->dot11MeshRetryTimeout = DEFAULT_MESH_RETRY_TIMEOUT;
2398         ssid->dot11MeshConfirmTimeout = DEFAULT_MESH_CONFIRM_TIMEOUT;
2399         ssid->dot11MeshHoldingTimeout = DEFAULT_MESH_HOLDING_TIMEOUT;
2400 #endif /* CONFIG_MESH */
2401 #ifdef CONFIG_HT_OVERRIDES
2402         ssid->disable_ht = DEFAULT_DISABLE_HT;
2403         ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
2404         ssid->disable_sgi = DEFAULT_DISABLE_SGI;
2405         ssid->disable_ldpc = DEFAULT_DISABLE_LDPC;
2406         ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
2407         ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
2408         ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
2409 #endif /* CONFIG_HT_OVERRIDES */
2410 #ifdef CONFIG_VHT_OVERRIDES
2411         ssid->vht_rx_mcs_nss_1 = -1;
2412         ssid->vht_rx_mcs_nss_2 = -1;
2413         ssid->vht_rx_mcs_nss_3 = -1;
2414         ssid->vht_rx_mcs_nss_4 = -1;
2415         ssid->vht_rx_mcs_nss_5 = -1;
2416         ssid->vht_rx_mcs_nss_6 = -1;
2417         ssid->vht_rx_mcs_nss_7 = -1;
2418         ssid->vht_rx_mcs_nss_8 = -1;
2419         ssid->vht_tx_mcs_nss_1 = -1;
2420         ssid->vht_tx_mcs_nss_2 = -1;
2421         ssid->vht_tx_mcs_nss_3 = -1;
2422         ssid->vht_tx_mcs_nss_4 = -1;
2423         ssid->vht_tx_mcs_nss_5 = -1;
2424         ssid->vht_tx_mcs_nss_6 = -1;
2425         ssid->vht_tx_mcs_nss_7 = -1;
2426         ssid->vht_tx_mcs_nss_8 = -1;
2427 #endif /* CONFIG_VHT_OVERRIDES */
2428         ssid->proactive_key_caching = -1;
2429 #ifdef CONFIG_IEEE80211W
2430         ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
2431 #endif /* CONFIG_IEEE80211W */
2432         ssid->mac_addr = -1;
2433 }
2434
2435
2436 /**
2437  * wpa_config_set - Set a variable in network configuration
2438  * @ssid: Pointer to network configuration data
2439  * @var: Variable name, e.g., "ssid"
2440  * @value: Variable value
2441  * @line: Line number in configuration file or 0 if not used
2442  * Returns: 0 on success, -1 on failure
2443  *
2444  * This function can be used to set network configuration variables based on
2445  * both the configuration file and management interface input. The value
2446  * parameter must be in the same format as the text-based configuration file is
2447  * using. For example, strings are using double quotation marks.
2448  */
2449 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
2450                    int line)
2451 {
2452         size_t i;
2453         int ret = 0;
2454
2455         if (ssid == NULL || var == NULL || value == NULL)
2456                 return -1;
2457
2458         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2459                 const struct parse_data *field = &ssid_fields[i];
2460                 if (os_strcmp(var, field->name) != 0)
2461                         continue;
2462
2463                 if (field->parser(field, ssid, line, value)) {
2464                         if (line) {
2465                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
2466                                            "parse %s '%s'.", line, var, value);
2467                         }
2468                         ret = -1;
2469                 }
2470                 break;
2471         }
2472         if (i == NUM_SSID_FIELDS) {
2473                 if (line) {
2474                         wpa_printf(MSG_ERROR, "Line %d: unknown network field "
2475                                    "'%s'.", line, var);
2476                 }
2477                 ret = -1;
2478         }
2479
2480         return ret;
2481 }
2482
2483
2484 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
2485                           const char *value)
2486 {
2487         size_t len;
2488         char *buf;
2489         int ret;
2490
2491         len = os_strlen(value);
2492         buf = os_malloc(len + 3);
2493         if (buf == NULL)
2494                 return -1;
2495         buf[0] = '"';
2496         os_memcpy(buf + 1, value, len);
2497         buf[len + 1] = '"';
2498         buf[len + 2] = '\0';
2499         ret = wpa_config_set(ssid, var, buf, 0);
2500         os_free(buf);
2501         return ret;
2502 }
2503
2504
2505 /**
2506  * wpa_config_get_all - Get all options from network configuration
2507  * @ssid: Pointer to network configuration data
2508  * @get_keys: Determines if keys/passwords will be included in returned list
2509  *      (if they may be exported)
2510  * Returns: %NULL terminated list of all set keys and their values in the form
2511  * of [key1, val1, key2, val2, ... , NULL]
2512  *
2513  * This function can be used to get list of all configured network properties.
2514  * The caller is responsible for freeing the returned list and all its
2515  * elements.
2516  */
2517 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
2518 {
2519         const struct parse_data *field;
2520         char *key, *value;
2521         size_t i;
2522         char **props;
2523         int fields_num;
2524
2525         get_keys = get_keys && ssid->export_keys;
2526
2527         props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
2528         if (!props)
2529                 return NULL;
2530
2531         fields_num = 0;
2532         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2533                 field = &ssid_fields[i];
2534                 if (field->key_data && !get_keys)
2535                         continue;
2536                 value = field->writer(field, ssid);
2537                 if (value == NULL)
2538                         continue;
2539                 if (os_strlen(value) == 0) {
2540                         os_free(value);
2541                         continue;
2542                 }
2543
2544                 key = os_strdup(field->name);
2545                 if (key == NULL) {
2546                         os_free(value);
2547                         goto err;
2548                 }
2549
2550                 props[fields_num * 2] = key;
2551                 props[fields_num * 2 + 1] = value;
2552
2553                 fields_num++;
2554         }
2555
2556         return props;
2557
2558 err:
2559         value = *props;
2560         while (value)
2561                 os_free(value++);
2562         os_free(props);
2563         return NULL;
2564 }
2565
2566
2567 #ifndef NO_CONFIG_WRITE
2568 /**
2569  * wpa_config_get - Get a variable in network configuration
2570  * @ssid: Pointer to network configuration data
2571  * @var: Variable name, e.g., "ssid"
2572  * Returns: Value of the variable or %NULL on failure
2573  *
2574  * This function can be used to get network configuration variables. The
2575  * returned value is a copy of the configuration variable in text format, i.e,.
2576  * the same format that the text-based configuration file and wpa_config_set()
2577  * are using for the value. The caller is responsible for freeing the returned
2578  * value.
2579  */
2580 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
2581 {
2582         size_t i;
2583
2584         if (ssid == NULL || var == NULL)
2585                 return NULL;
2586
2587         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2588                 const struct parse_data *field = &ssid_fields[i];
2589                 if (os_strcmp(var, field->name) == 0)
2590                         return field->writer(field, ssid);
2591         }
2592
2593         return NULL;
2594 }
2595
2596
2597 /**
2598  * wpa_config_get_no_key - Get a variable in network configuration (no keys)
2599  * @ssid: Pointer to network configuration data
2600  * @var: Variable name, e.g., "ssid"
2601  * Returns: Value of the variable or %NULL on failure
2602  *
2603  * This function can be used to get network configuration variable like
2604  * wpa_config_get(). The only difference is that this functions does not expose
2605  * key/password material from the configuration. In case a key/password field
2606  * is requested, the returned value is an empty string or %NULL if the variable
2607  * is not set or "*" if the variable is set (regardless of its value). The
2608  * returned value is a copy of the configuration variable in text format, i.e,.
2609  * the same format that the text-based configuration file and wpa_config_set()
2610  * are using for the value. The caller is responsible for freeing the returned
2611  * value.
2612  */
2613 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
2614 {
2615         size_t i;
2616
2617         if (ssid == NULL || var == NULL)
2618                 return NULL;
2619
2620         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2621                 const struct parse_data *field = &ssid_fields[i];
2622                 if (os_strcmp(var, field->name) == 0) {
2623                         char *res = field->writer(field, ssid);
2624                         if (field->key_data) {
2625                                 if (res && res[0]) {
2626                                         wpa_printf(MSG_DEBUG, "Do not allow "
2627                                                    "key_data field to be "
2628                                                    "exposed");
2629                                         str_clear_free(res);
2630                                         return os_strdup("*");
2631                                 }
2632
2633                                 os_free(res);
2634                                 return NULL;
2635                         }
2636                         return res;
2637                 }
2638         }
2639
2640         return NULL;
2641 }
2642 #endif /* NO_CONFIG_WRITE */
2643
2644
2645 /**
2646  * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
2647  * @ssid: Pointer to network configuration data
2648  *
2649  * This function must be called to update WPA PSK when either SSID or the
2650  * passphrase has changed for the network configuration.
2651  */
2652 void wpa_config_update_psk(struct wpa_ssid *ssid)
2653 {
2654 #ifndef CONFIG_NO_PBKDF2
2655         pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
2656                     ssid->psk, PMK_LEN);
2657         wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
2658                         ssid->psk, PMK_LEN);
2659         ssid->psk_set = 1;
2660 #endif /* CONFIG_NO_PBKDF2 */
2661 }
2662
2663
2664 static int wpa_config_set_cred_req_conn_capab(struct wpa_cred *cred,
2665                                               const char *value)
2666 {
2667         u8 *proto;
2668         int **port;
2669         int *ports, *nports;
2670         const char *pos;
2671         unsigned int num_ports;
2672
2673         proto = os_realloc_array(cred->req_conn_capab_proto,
2674                                  cred->num_req_conn_capab + 1, sizeof(u8));
2675         if (proto == NULL)
2676                 return -1;
2677         cred->req_conn_capab_proto = proto;
2678
2679         port = os_realloc_array(cred->req_conn_capab_port,
2680                                 cred->num_req_conn_capab + 1, sizeof(int *));
2681         if (port == NULL)
2682                 return -1;
2683         cred->req_conn_capab_port = port;
2684
2685         proto[cred->num_req_conn_capab] = atoi(value);
2686
2687         pos = os_strchr(value, ':');
2688         if (pos == NULL) {
2689                 port[cred->num_req_conn_capab] = NULL;
2690                 cred->num_req_conn_capab++;
2691                 return 0;
2692         }
2693         pos++;
2694
2695         ports = NULL;
2696         num_ports = 0;
2697
2698         while (*pos) {
2699                 nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
2700                 if (nports == NULL) {
2701                         os_free(ports);
2702                         return -1;
2703                 }
2704                 ports = nports;
2705                 ports[num_ports++] = atoi(pos);
2706
2707                 pos = os_strchr(pos, ',');
2708                 if (pos == NULL)
2709                         break;
2710                 pos++;
2711         }
2712
2713         nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
2714         if (nports == NULL) {
2715                 os_free(ports);
2716                 return -1;
2717         }
2718         ports = nports;
2719         ports[num_ports] = -1;
2720
2721         port[cred->num_req_conn_capab] = ports;
2722         cred->num_req_conn_capab++;
2723         return 0;
2724 }
2725
2726
2727 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
2728                         const char *value, int line)
2729 {
2730         char *val;
2731         size_t len;
2732
2733         if (os_strcmp(var, "temporary") == 0) {
2734                 cred->temporary = atoi(value);
2735                 return 0;
2736         }
2737
2738         if (os_strcmp(var, "priority") == 0) {
2739                 cred->priority = atoi(value);
2740                 return 0;
2741         }
2742
2743         if (os_strcmp(var, "sp_priority") == 0) {
2744                 int prio = atoi(value);
2745                 if (prio < 0 || prio > 255)
2746                         return -1;
2747                 cred->sp_priority = prio;
2748                 return 0;
2749         }
2750
2751         if (os_strcmp(var, "pcsc") == 0) {
2752                 cred->pcsc = atoi(value);
2753                 return 0;
2754         }
2755
2756         if (os_strcmp(var, "eap") == 0) {
2757                 struct eap_method_type method;
2758                 method.method = eap_peer_get_type(value, &method.vendor);
2759                 if (method.vendor == EAP_VENDOR_IETF &&
2760                     method.method == EAP_TYPE_NONE) {
2761                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
2762                                    "for a credential", line, value);
2763                         return -1;
2764                 }
2765                 os_free(cred->eap_method);
2766                 cred->eap_method = os_malloc(sizeof(*cred->eap_method));
2767                 if (cred->eap_method == NULL)
2768                         return -1;
2769                 os_memcpy(cred->eap_method, &method, sizeof(method));
2770                 return 0;
2771         }
2772
2773         if (os_strcmp(var, "password") == 0 &&
2774             os_strncmp(value, "ext:", 4) == 0) {
2775                 str_clear_free(cred->password);
2776                 cred->password = os_strdup(value);
2777                 cred->ext_password = 1;
2778                 return 0;
2779         }
2780
2781         if (os_strcmp(var, "update_identifier") == 0) {
2782                 cred->update_identifier = atoi(value);
2783                 return 0;
2784         }
2785
2786         if (os_strcmp(var, "min_dl_bandwidth_home") == 0) {
2787                 cred->min_dl_bandwidth_home = atoi(value);
2788                 return 0;
2789         }
2790
2791         if (os_strcmp(var, "min_ul_bandwidth_home") == 0) {
2792                 cred->min_ul_bandwidth_home = atoi(value);
2793                 return 0;
2794         }
2795
2796         if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0) {
2797                 cred->min_dl_bandwidth_roaming = atoi(value);
2798                 return 0;
2799         }
2800
2801         if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0) {
2802                 cred->min_ul_bandwidth_roaming = atoi(value);
2803                 return 0;
2804         }
2805
2806         if (os_strcmp(var, "max_bss_load") == 0) {
2807                 cred->max_bss_load = atoi(value);
2808                 return 0;
2809         }
2810
2811         if (os_strcmp(var, "req_conn_capab") == 0)
2812                 return wpa_config_set_cred_req_conn_capab(cred, value);
2813
2814         if (os_strcmp(var, "ocsp") == 0) {
2815                 cred->ocsp = atoi(value);
2816                 return 0;
2817         }
2818
2819         if (os_strcmp(var, "sim_num") == 0) {
2820                 cred->sim_num = atoi(value);
2821                 return 0;
2822         }
2823
2824         val = wpa_config_parse_string(value, &len);
2825         if (val == NULL) {
2826                 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
2827                            "value '%s'.", line, var, value);
2828                 return -1;
2829         }
2830
2831         if (os_strcmp(var, "realm") == 0) {
2832                 os_free(cred->realm);
2833                 cred->realm = val;
2834                 return 0;
2835         }
2836
2837         if (os_strcmp(var, "username") == 0) {
2838                 str_clear_free(cred->username);
2839                 cred->username = val;
2840                 return 0;
2841         }
2842
2843         if (os_strcmp(var, "password") == 0) {
2844                 str_clear_free(cred->password);
2845                 cred->password = val;
2846                 cred->ext_password = 0;
2847                 return 0;
2848         }
2849
2850         if (os_strcmp(var, "ca_cert") == 0) {
2851                 os_free(cred->ca_cert);
2852                 cred->ca_cert = val;
2853                 return 0;
2854         }
2855
2856         if (os_strcmp(var, "client_cert") == 0) {
2857                 os_free(cred->client_cert);
2858                 cred->client_cert = val;
2859                 return 0;
2860         }
2861
2862         if (os_strcmp(var, "private_key") == 0) {
2863                 os_free(cred->private_key);
2864                 cred->private_key = val;
2865                 return 0;
2866         }
2867
2868         if (os_strcmp(var, "private_key_passwd") == 0) {
2869                 str_clear_free(cred->private_key_passwd);
2870                 cred->private_key_passwd = val;
2871                 return 0;
2872         }
2873
2874         if (os_strcmp(var, "imsi") == 0) {
2875                 os_free(cred->imsi);
2876                 cred->imsi = val;
2877                 return 0;
2878         }
2879
2880         if (os_strcmp(var, "milenage") == 0) {
2881                 str_clear_free(cred->milenage);
2882                 cred->milenage = val;
2883                 return 0;
2884         }
2885
2886         if (os_strcmp(var, "domain_suffix_match") == 0) {
2887                 os_free(cred->domain_suffix_match);
2888                 cred->domain_suffix_match = val;
2889                 return 0;
2890         }
2891
2892         if (os_strcmp(var, "domain") == 0) {
2893                 char **new_domain;
2894                 new_domain = os_realloc_array(cred->domain,
2895                                               cred->num_domain + 1,
2896                                               sizeof(char *));
2897                 if (new_domain == NULL) {
2898                         os_free(val);
2899                         return -1;
2900                 }
2901                 new_domain[cred->num_domain++] = val;
2902                 cred->domain = new_domain;
2903                 return 0;
2904         }
2905
2906         if (os_strcmp(var, "phase1") == 0) {
2907                 os_free(cred->phase1);
2908                 cred->phase1 = val;
2909                 return 0;
2910         }
2911
2912         if (os_strcmp(var, "phase2") == 0) {
2913                 os_free(cred->phase2);
2914                 cred->phase2 = val;
2915                 return 0;
2916         }
2917
2918         if (os_strcmp(var, "roaming_consortium") == 0) {
2919                 if (len < 3 || len > sizeof(cred->roaming_consortium)) {
2920                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2921                                    "roaming_consortium length %d (3..15 "
2922                                    "expected)", line, (int) len);
2923                         os_free(val);
2924                         return -1;
2925                 }
2926                 os_memcpy(cred->roaming_consortium, val, len);
2927                 cred->roaming_consortium_len = len;
2928                 os_free(val);
2929                 return 0;
2930         }
2931
2932         if (os_strcmp(var, "required_roaming_consortium") == 0) {
2933                 if (len < 3 || len > sizeof(cred->required_roaming_consortium))
2934                 {
2935                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2936                                    "required_roaming_consortium length %d "
2937                                    "(3..15 expected)", line, (int) len);
2938                         os_free(val);
2939                         return -1;
2940                 }
2941                 os_memcpy(cred->required_roaming_consortium, val, len);
2942                 cred->required_roaming_consortium_len = len;
2943                 os_free(val);
2944                 return 0;
2945         }
2946
2947         if (os_strcmp(var, "excluded_ssid") == 0) {
2948                 struct excluded_ssid *e;
2949
2950                 if (len > MAX_SSID_LEN) {
2951                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2952                                    "excluded_ssid length %d", line, (int) len);
2953                         os_free(val);
2954                         return -1;
2955                 }
2956
2957                 e = os_realloc_array(cred->excluded_ssid,
2958                                      cred->num_excluded_ssid + 1,
2959                                      sizeof(struct excluded_ssid));
2960                 if (e == NULL) {
2961                         os_free(val);
2962                         return -1;
2963                 }
2964                 cred->excluded_ssid = e;
2965
2966                 e = &cred->excluded_ssid[cred->num_excluded_ssid++];
2967                 os_memcpy(e->ssid, val, len);
2968                 e->ssid_len = len;
2969
2970                 os_free(val);
2971
2972                 return 0;
2973         }
2974
2975         if (os_strcmp(var, "roaming_partner") == 0) {
2976                 struct roaming_partner *p;
2977                 char *pos;
2978
2979                 p = os_realloc_array(cred->roaming_partner,
2980                                      cred->num_roaming_partner + 1,
2981                                      sizeof(struct roaming_partner));
2982                 if (p == NULL) {
2983                         os_free(val);
2984                         return -1;
2985                 }
2986                 cred->roaming_partner = p;
2987
2988                 p = &cred->roaming_partner[cred->num_roaming_partner];
2989
2990                 pos = os_strchr(val, ',');
2991                 if (pos == NULL) {
2992                         os_free(val);
2993                         return -1;
2994                 }
2995                 *pos++ = '\0';
2996                 if (pos - val - 1 >= (int) sizeof(p->fqdn)) {
2997                         os_free(val);
2998                         return -1;
2999                 }
3000                 os_memcpy(p->fqdn, val, pos - val);
3001
3002                 p->exact_match = atoi(pos);
3003
3004                 pos = os_strchr(pos, ',');
3005                 if (pos == NULL) {
3006                         os_free(val);
3007                         return -1;
3008                 }
3009                 *pos++ = '\0';
3010
3011                 p->priority = atoi(pos);
3012
3013                 pos = os_strchr(pos, ',');
3014                 if (pos == NULL) {
3015                         os_free(val);
3016                         return -1;
3017                 }
3018                 *pos++ = '\0';
3019
3020                 if (os_strlen(pos) >= sizeof(p->country)) {
3021                         os_free(val);
3022                         return -1;
3023                 }
3024                 os_memcpy(p->country, pos, os_strlen(pos) + 1);
3025
3026                 cred->num_roaming_partner++;
3027                 os_free(val);
3028
3029                 return 0;
3030         }
3031
3032         if (os_strcmp(var, "provisioning_sp") == 0) {
3033                 os_free(cred->provisioning_sp);
3034                 cred->provisioning_sp = val;
3035                 return 0;
3036         }
3037
3038         if (line) {
3039                 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
3040                            line, var);
3041         }
3042
3043         os_free(val);
3044
3045         return -1;
3046 }
3047
3048
3049 static char * alloc_int_str(int val)
3050 {
3051         const unsigned int bufsize = 20;
3052         char *buf;
3053         int res;
3054
3055         buf = os_malloc(bufsize);
3056         if (buf == NULL)
3057                 return NULL;
3058         res = os_snprintf(buf, bufsize, "%d", val);
3059         if (os_snprintf_error(bufsize, res)) {
3060                 os_free(buf);
3061                 buf = NULL;
3062         }
3063         return buf;
3064 }
3065
3066
3067 static char * alloc_strdup(const char *str)
3068 {
3069         if (str == NULL)
3070                 return NULL;
3071         return os_strdup(str);
3072 }
3073
3074
3075 char * wpa_config_get_cred_no_key(struct wpa_cred *cred, const char *var)
3076 {
3077         if (os_strcmp(var, "temporary") == 0)
3078                 return alloc_int_str(cred->temporary);
3079
3080         if (os_strcmp(var, "priority") == 0)
3081                 return alloc_int_str(cred->priority);
3082
3083         if (os_strcmp(var, "sp_priority") == 0)
3084                 return alloc_int_str(cred->sp_priority);
3085
3086         if (os_strcmp(var, "pcsc") == 0)
3087                 return alloc_int_str(cred->pcsc);
3088
3089         if (os_strcmp(var, "eap") == 0) {
3090                 if (!cred->eap_method)
3091                         return NULL;
3092                 return alloc_strdup(eap_get_name(cred->eap_method[0].vendor,
3093                                                  cred->eap_method[0].method));
3094         }
3095
3096         if (os_strcmp(var, "update_identifier") == 0)
3097                 return alloc_int_str(cred->update_identifier);
3098
3099         if (os_strcmp(var, "min_dl_bandwidth_home") == 0)
3100                 return alloc_int_str(cred->min_dl_bandwidth_home);
3101
3102         if (os_strcmp(var, "min_ul_bandwidth_home") == 0)
3103                 return alloc_int_str(cred->min_ul_bandwidth_home);
3104
3105         if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0)
3106                 return alloc_int_str(cred->min_dl_bandwidth_roaming);
3107
3108         if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0)
3109                 return alloc_int_str(cred->min_ul_bandwidth_roaming);
3110
3111         if (os_strcmp(var, "max_bss_load") == 0)
3112                 return alloc_int_str(cred->max_bss_load);
3113
3114         if (os_strcmp(var, "req_conn_capab") == 0) {
3115                 unsigned int i;
3116                 char *buf, *end, *pos;
3117                 int ret;
3118
3119                 if (!cred->num_req_conn_capab)
3120                         return NULL;
3121
3122                 buf = os_malloc(4000);
3123                 if (buf == NULL)
3124                         return NULL;
3125                 pos = buf;
3126                 end = pos + 4000;
3127                 for (i = 0; i < cred->num_req_conn_capab; i++) {
3128                         int *ports;
3129
3130                         ret = os_snprintf(pos, end - pos, "%s%u",
3131                                           i > 0 ? "\n" : "",
3132                                           cred->req_conn_capab_proto[i]);
3133                         if (os_snprintf_error(end - pos, ret))
3134                                 return buf;
3135                         pos += ret;
3136
3137                         ports = cred->req_conn_capab_port[i];
3138                         if (ports) {
3139                                 int j;
3140                                 for (j = 0; ports[j] != -1; j++) {
3141                                         ret = os_snprintf(pos, end - pos,
3142                                                           "%s%d",
3143                                                           j > 0 ? "," : ":",
3144                                                           ports[j]);
3145                                         if (os_snprintf_error(end - pos, ret))
3146                                                 return buf;
3147                                         pos += ret;
3148                                 }
3149                         }
3150                 }
3151
3152                 return buf;
3153         }
3154
3155         if (os_strcmp(var, "ocsp") == 0)
3156                 return alloc_int_str(cred->ocsp);
3157
3158         if (os_strcmp(var, "realm") == 0)
3159                 return alloc_strdup(cred->realm);
3160
3161         if (os_strcmp(var, "username") == 0)
3162                 return alloc_strdup(cred->username);
3163
3164         if (os_strcmp(var, "password") == 0) {
3165                 if (!cred->password)
3166                         return NULL;
3167                 return alloc_strdup("*");
3168         }
3169
3170         if (os_strcmp(var, "ca_cert") == 0)
3171                 return alloc_strdup(cred->ca_cert);
3172
3173         if (os_strcmp(var, "client_cert") == 0)
3174                 return alloc_strdup(cred->client_cert);
3175
3176         if (os_strcmp(var, "private_key") == 0)
3177                 return alloc_strdup(cred->private_key);
3178
3179         if (os_strcmp(var, "private_key_passwd") == 0) {
3180                 if (!cred->private_key_passwd)
3181                         return NULL;
3182                 return alloc_strdup("*");
3183         }
3184
3185         if (os_strcmp(var, "imsi") == 0)
3186                 return alloc_strdup(cred->imsi);
3187
3188         if (os_strcmp(var, "milenage") == 0) {
3189                 if (!(cred->milenage))
3190                         return NULL;
3191                 return alloc_strdup("*");
3192         }
3193
3194         if (os_strcmp(var, "domain_suffix_match") == 0)
3195                 return alloc_strdup(cred->domain_suffix_match);
3196
3197         if (os_strcmp(var, "domain") == 0) {
3198                 unsigned int i;
3199                 char *buf, *end, *pos;
3200                 int ret;
3201
3202                 if (!cred->num_domain)
3203                         return NULL;
3204
3205                 buf = os_malloc(4000);
3206                 if (buf == NULL)
3207                         return NULL;
3208                 pos = buf;
3209                 end = pos + 4000;
3210
3211                 for (i = 0; i < cred->num_domain; i++) {
3212                         ret = os_snprintf(pos, end - pos, "%s%s",
3213                                           i > 0 ? "\n" : "", cred->domain[i]);
3214                         if (os_snprintf_error(end - pos, ret))
3215                                 return buf;
3216                         pos += ret;
3217                 }
3218
3219                 return buf;
3220         }
3221
3222         if (os_strcmp(var, "phase1") == 0)
3223                 return alloc_strdup(cred->phase1);
3224
3225         if (os_strcmp(var, "phase2") == 0)
3226                 return alloc_strdup(cred->phase2);
3227
3228         if (os_strcmp(var, "roaming_consortium") == 0) {
3229                 size_t buflen;
3230                 char *buf;
3231
3232                 if (!cred->roaming_consortium_len)
3233                         return NULL;
3234                 buflen = cred->roaming_consortium_len * 2 + 1;
3235                 buf = os_malloc(buflen);
3236                 if (buf == NULL)
3237                         return NULL;
3238                 wpa_snprintf_hex(buf, buflen, cred->roaming_consortium,
3239                                  cred->roaming_consortium_len);
3240                 return buf;
3241         }
3242
3243         if (os_strcmp(var, "required_roaming_consortium") == 0) {
3244                 size_t buflen;
3245                 char *buf;
3246
3247                 if (!cred->required_roaming_consortium_len)
3248                         return NULL;
3249                 buflen = cred->required_roaming_consortium_len * 2 + 1;
3250                 buf = os_malloc(buflen);
3251                 if (buf == NULL)
3252                         return NULL;
3253                 wpa_snprintf_hex(buf, buflen, cred->required_roaming_consortium,
3254                                  cred->required_roaming_consortium_len);
3255                 return buf;
3256         }
3257
3258         if (os_strcmp(var, "excluded_ssid") == 0) {
3259                 unsigned int i;
3260                 char *buf, *end, *pos;
3261
3262                 if (!cred->num_excluded_ssid)
3263                         return NULL;
3264
3265                 buf = os_malloc(4000);
3266                 if (buf == NULL)
3267                         return NULL;
3268                 pos = buf;
3269                 end = pos + 4000;
3270
3271                 for (i = 0; i < cred->num_excluded_ssid; i++) {
3272                         struct excluded_ssid *e;
3273                         int ret;
3274
3275                         e = &cred->excluded_ssid[i];
3276                         ret = os_snprintf(pos, end - pos, "%s%s",
3277                                           i > 0 ? "\n" : "",
3278                                           wpa_ssid_txt(e->ssid, e->ssid_len));
3279                         if (os_snprintf_error(end - pos, ret))
3280                                 return buf;
3281                         pos += ret;
3282                 }
3283
3284                 return buf;
3285         }
3286
3287         if (os_strcmp(var, "roaming_partner") == 0) {
3288                 unsigned int i;
3289                 char *buf, *end, *pos;
3290
3291                 if (!cred->num_roaming_partner)
3292                         return NULL;
3293
3294                 buf = os_malloc(4000);
3295                 if (buf == NULL)
3296                         return NULL;
3297                 pos = buf;
3298                 end = pos + 4000;
3299
3300                 for (i = 0; i < cred->num_roaming_partner; i++) {
3301                         struct roaming_partner *p;
3302                         int ret;
3303
3304                         p = &cred->roaming_partner[i];
3305                         ret = os_snprintf(pos, end - pos, "%s%s,%d,%u,%s",
3306                                           i > 0 ? "\n" : "",
3307                                           p->fqdn, p->exact_match, p->priority,
3308                                           p->country);
3309                         if (os_snprintf_error(end - pos, ret))
3310                                 return buf;
3311                         pos += ret;
3312                 }
3313
3314                 return buf;
3315         }
3316
3317         if (os_strcmp(var, "provisioning_sp") == 0)
3318                 return alloc_strdup(cred->provisioning_sp);
3319
3320         return NULL;
3321 }
3322
3323
3324 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
3325 {
3326         struct wpa_cred *cred;
3327
3328         cred = config->cred;
3329         while (cred) {
3330                 if (id == cred->id)
3331                         break;
3332                 cred = cred->next;
3333         }
3334
3335         return cred;
3336 }
3337
3338
3339 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
3340 {
3341         int id;
3342         struct wpa_cred *cred, *last = NULL;
3343
3344         id = -1;
3345         cred = config->cred;
3346         while (cred) {
3347                 if (cred->id > id)
3348                         id = cred->id;
3349                 last = cred;
3350                 cred = cred->next;
3351         }
3352         id++;
3353
3354         cred = os_zalloc(sizeof(*cred));
3355         if (cred == NULL)
3356                 return NULL;
3357         cred->id = id;
3358         cred->sim_num = DEFAULT_USER_SELECTED_SIM;
3359         if (last)
3360                 last->next = cred;
3361         else
3362                 config->cred = cred;
3363
3364         return cred;
3365 }
3366
3367
3368 int wpa_config_remove_cred(struct wpa_config *config, int id)
3369 {
3370         struct wpa_cred *cred, *prev = NULL;
3371
3372         cred = config->cred;
3373         while (cred) {
3374                 if (id == cred->id)
3375                         break;
3376                 prev = cred;
3377                 cred = cred->next;
3378         }
3379
3380         if (cred == NULL)
3381                 return -1;
3382
3383         if (prev)
3384                 prev->next = cred->next;
3385         else
3386                 config->cred = cred->next;
3387
3388         wpa_config_free_cred(cred);
3389         return 0;
3390 }
3391
3392
3393 #ifndef CONFIG_NO_CONFIG_BLOBS
3394 /**
3395  * wpa_config_get_blob - Get a named configuration blob
3396  * @config: Configuration data from wpa_config_read()
3397  * @name: Name of the blob
3398  * Returns: Pointer to blob data or %NULL if not found
3399  */
3400 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
3401                                                    const char *name)
3402 {
3403         struct wpa_config_blob *blob = config->blobs;
3404
3405         while (blob) {
3406                 if (os_strcmp(blob->name, name) == 0)
3407                         return blob;
3408                 blob = blob->next;
3409         }
3410         return NULL;
3411 }
3412
3413
3414 /**
3415  * wpa_config_set_blob - Set or add a named configuration blob
3416  * @config: Configuration data from wpa_config_read()
3417  * @blob: New value for the blob
3418  *
3419  * Adds a new configuration blob or replaces the current value of an existing
3420  * blob.
3421  */
3422 void wpa_config_set_blob(struct wpa_config *config,
3423                          struct wpa_config_blob *blob)
3424 {
3425         wpa_config_remove_blob(config, blob->name);
3426         blob->next = config->blobs;
3427         config->blobs = blob;
3428 }
3429
3430
3431 /**
3432  * wpa_config_free_blob - Free blob data
3433  * @blob: Pointer to blob to be freed
3434  */
3435 void wpa_config_free_blob(struct wpa_config_blob *blob)
3436 {
3437         if (blob) {
3438                 os_free(blob->name);
3439                 bin_clear_free(blob->data, blob->len);
3440                 os_free(blob);
3441         }
3442 }
3443
3444
3445 /**
3446  * wpa_config_remove_blob - Remove a named configuration blob
3447  * @config: Configuration data from wpa_config_read()
3448  * @name: Name of the blob to remove
3449  * Returns: 0 if blob was removed or -1 if blob was not found
3450  */
3451 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
3452 {
3453         struct wpa_config_blob *pos = config->blobs, *prev = NULL;
3454
3455         while (pos) {
3456                 if (os_strcmp(pos->name, name) == 0) {
3457                         if (prev)
3458                                 prev->next = pos->next;
3459                         else
3460                                 config->blobs = pos->next;
3461                         wpa_config_free_blob(pos);
3462                         return 0;
3463                 }
3464                 prev = pos;
3465                 pos = pos->next;
3466         }
3467
3468         return -1;
3469 }
3470 #endif /* CONFIG_NO_CONFIG_BLOBS */
3471
3472
3473 /**
3474  * wpa_config_alloc_empty - Allocate an empty configuration
3475  * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
3476  * socket
3477  * @driver_param: Driver parameters
3478  * Returns: Pointer to allocated configuration data or %NULL on failure
3479  */
3480 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
3481                                            const char *driver_param)
3482 {
3483         struct wpa_config *config;
3484         const int aCWmin = 4, aCWmax = 10;
3485         const struct hostapd_wmm_ac_params ac_bk =
3486                 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
3487         const struct hostapd_wmm_ac_params ac_be =
3488                 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
3489         const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
3490                 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
3491         const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
3492                 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
3493
3494         config = os_zalloc(sizeof(*config));
3495         if (config == NULL)
3496                 return NULL;
3497         config->eapol_version = DEFAULT_EAPOL_VERSION;
3498         config->ap_scan = DEFAULT_AP_SCAN;
3499         config->user_mpm = DEFAULT_USER_MPM;
3500         config->max_peer_links = DEFAULT_MAX_PEER_LINKS;
3501         config->mesh_max_inactivity = DEFAULT_MESH_MAX_INACTIVITY;
3502         config->fast_reauth = DEFAULT_FAST_REAUTH;
3503         config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
3504         config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
3505         config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
3506         config->p2p_optimize_listen_chan = DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN;
3507         config->p2p_go_ctwindow = DEFAULT_P2P_GO_CTWINDOW;
3508         config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
3509         config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
3510         config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
3511         config->max_num_sta = DEFAULT_MAX_NUM_STA;
3512         config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
3513         config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
3514         config->wmm_ac_params[0] = ac_be;
3515         config->wmm_ac_params[1] = ac_bk;
3516         config->wmm_ac_params[2] = ac_vi;
3517         config->wmm_ac_params[3] = ac_vo;
3518         config->p2p_search_delay = DEFAULT_P2P_SEARCH_DELAY;
3519         config->rand_addr_lifetime = DEFAULT_RAND_ADDR_LIFETIME;
3520         config->key_mgmt_offload = DEFAULT_KEY_MGMT_OFFLOAD;
3521         config->cert_in_cb = DEFAULT_CERT_IN_CB;
3522
3523         if (ctrl_interface)
3524                 config->ctrl_interface = os_strdup(ctrl_interface);
3525         if (driver_param)
3526                 config->driver_param = os_strdup(driver_param);
3527
3528         return config;
3529 }
3530
3531
3532 #ifndef CONFIG_NO_STDOUT_DEBUG
3533 /**
3534  * wpa_config_debug_dump_networks - Debug dump of configured networks
3535  * @config: Configuration data from wpa_config_read()
3536  */
3537 void wpa_config_debug_dump_networks(struct wpa_config *config)
3538 {
3539         int prio;
3540         struct wpa_ssid *ssid;
3541
3542         for (prio = 0; prio < config->num_prio; prio++) {
3543                 ssid = config->pssid[prio];
3544                 wpa_printf(MSG_DEBUG, "Priority group %d",
3545                            ssid->priority);
3546                 while (ssid) {
3547                         wpa_printf(MSG_DEBUG, "   id=%d ssid='%s'",
3548                                    ssid->id,
3549                                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3550                         ssid = ssid->pnext;
3551                 }
3552         }
3553 }
3554 #endif /* CONFIG_NO_STDOUT_DEBUG */
3555
3556
3557 struct global_parse_data {
3558         char *name;
3559         int (*parser)(const struct global_parse_data *data,
3560                       struct wpa_config *config, int line, const char *value);
3561         int (*get)(const char *name, struct wpa_config *config, long offset,
3562                    char *buf, size_t buflen, int pretty_print);
3563         void *param1, *param2, *param3;
3564         unsigned int changed_flag;
3565 };
3566
3567
3568 static int wpa_global_config_parse_int(const struct global_parse_data *data,
3569                                        struct wpa_config *config, int line,
3570                                        const char *pos)
3571 {
3572         int val, *dst;
3573         char *end;
3574
3575         dst = (int *) (((u8 *) config) + (long) data->param1);
3576         val = strtol(pos, &end, 0);
3577         if (*end) {
3578                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
3579                            line, pos);
3580                 return -1;
3581         }
3582         *dst = val;
3583
3584         wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
3585
3586         if (data->param2 && *dst < (long) data->param2) {
3587                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
3588                            "min_value=%ld)", line, data->name, *dst,
3589                            (long) data->param2);
3590                 *dst = (long) data->param2;
3591                 return -1;
3592         }
3593
3594         if (data->param3 && *dst > (long) data->param3) {
3595                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
3596                            "max_value=%ld)", line, data->name, *dst,
3597                            (long) data->param3);
3598                 *dst = (long) data->param3;
3599                 return -1;
3600         }
3601
3602         return 0;
3603 }
3604
3605
3606 static int wpa_global_config_parse_str(const struct global_parse_data *data,
3607                                        struct wpa_config *config, int line,
3608                                        const char *pos)
3609 {
3610         size_t len;
3611         char **dst, *tmp;
3612
3613         len = os_strlen(pos);
3614         if (data->param2 && len < (size_t) data->param2) {
3615                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
3616                            "min_len=%ld)", line, data->name,
3617                            (unsigned long) len, (long) data->param2);
3618                 return -1;
3619         }
3620
3621         if (data->param3 && len > (size_t) data->param3) {
3622                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
3623                            "max_len=%ld)", line, data->name,
3624                            (unsigned long) len, (long) data->param3);
3625                 return -1;
3626         }
3627
3628         tmp = os_strdup(pos);
3629         if (tmp == NULL)
3630                 return -1;
3631
3632         dst = (char **) (((u8 *) config) + (long) data->param1);
3633         os_free(*dst);
3634         *dst = tmp;
3635         wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
3636
3637         return 0;
3638 }
3639
3640
3641 static int wpa_config_process_bgscan(const struct global_parse_data *data,
3642                                      struct wpa_config *config, int line,
3643                                      const char *pos)
3644 {
3645         size_t len;
3646         char *tmp;
3647         int res;
3648
3649         tmp = wpa_config_parse_string(pos, &len);
3650         if (tmp == NULL) {
3651                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s",
3652                            line, data->name);
3653                 return -1;
3654         }
3655
3656         res = wpa_global_config_parse_str(data, config, line, tmp);
3657         os_free(tmp);
3658         return res;
3659 }
3660
3661
3662 static int wpa_global_config_parse_bin(const struct global_parse_data *data,
3663                                        struct wpa_config *config, int line,
3664                                        const char *pos)
3665 {
3666         size_t len;
3667         struct wpabuf **dst, *tmp;
3668
3669         len = os_strlen(pos);
3670         if (len & 0x01)
3671                 return -1;
3672
3673         tmp = wpabuf_alloc(len / 2);
3674         if (tmp == NULL)
3675                 return -1;
3676
3677         if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) {
3678                 wpabuf_free(tmp);
3679                 return -1;
3680         }
3681
3682         dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
3683         wpabuf_free(*dst);
3684         *dst = tmp;
3685         wpa_printf(MSG_DEBUG, "%s", data->name);
3686
3687         return 0;
3688 }
3689
3690
3691 static int wpa_config_process_freq_list(const struct global_parse_data *data,
3692                                         struct wpa_config *config, int line,
3693                                         const char *value)
3694 {
3695         int *freqs;
3696
3697         freqs = wpa_config_parse_int_array(value);
3698         if (freqs == NULL)
3699                 return -1;
3700         if (freqs[0] == 0) {
3701                 os_free(freqs);
3702                 freqs = NULL;
3703         }
3704         os_free(config->freq_list);
3705         config->freq_list = freqs;
3706         return 0;
3707 }
3708
3709
3710 #ifdef CONFIG_P2P
3711 static int wpa_global_config_parse_ipv4(const struct global_parse_data *data,
3712                                         struct wpa_config *config, int line,
3713                                         const char *pos)
3714 {
3715         u32 *dst;
3716         struct hostapd_ip_addr addr;
3717
3718         if (hostapd_parse_ip_addr(pos, &addr) < 0)
3719                 return -1;
3720         if (addr.af != AF_INET)
3721                 return -1;
3722
3723         dst = (u32 *) (((u8 *) config) + (long) data->param1);
3724         os_memcpy(dst, &addr.u.v4.s_addr, 4);
3725         wpa_printf(MSG_DEBUG, "%s = 0x%x", data->name,
3726                    WPA_GET_BE32((u8 *) dst));
3727
3728         return 0;
3729 }
3730 #endif /* CONFIG_P2P */
3731
3732
3733 static int wpa_config_process_country(const struct global_parse_data *data,
3734                                       struct wpa_config *config, int line,
3735                                       const char *pos)
3736 {
3737         if (!pos[0] || !pos[1]) {
3738                 wpa_printf(MSG_DEBUG, "Invalid country set");
3739                 return -1;
3740         }
3741         config->country[0] = pos[0];
3742         config->country[1] = pos[1];
3743         wpa_printf(MSG_DEBUG, "country='%c%c'",
3744                    config->country[0], config->country[1]);
3745         return 0;
3746 }
3747
3748
3749 static int wpa_config_process_load_dynamic_eap(
3750         const struct global_parse_data *data, struct wpa_config *config,
3751         int line, const char *so)
3752 {
3753         int ret;
3754         wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
3755         ret = eap_peer_method_load(so);
3756         if (ret == -2) {
3757                 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
3758                            "reloading.");
3759         } else if (ret) {
3760                 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
3761                            "method '%s'.", line, so);
3762                 return -1;
3763         }
3764
3765         return 0;
3766 }
3767
3768
3769 #ifdef CONFIG_WPS
3770
3771 static int wpa_config_process_uuid(const struct global_parse_data *data,
3772                                    struct wpa_config *config, int line,
3773                                    const char *pos)
3774 {
3775         char buf[40];
3776         if (uuid_str2bin(pos, config->uuid)) {
3777                 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
3778                 return -1;
3779         }
3780         uuid_bin2str(config->uuid, buf, sizeof(buf));
3781         wpa_printf(MSG_DEBUG, "uuid=%s", buf);
3782         return 0;
3783 }
3784
3785
3786 static int wpa_config_process_device_type(
3787         const struct global_parse_data *data,
3788         struct wpa_config *config, int line, const char *pos)
3789 {
3790         return wps_dev_type_str2bin(pos, config->device_type);
3791 }
3792
3793
3794 static int wpa_config_process_os_version(const struct global_parse_data *data,
3795                                          struct wpa_config *config, int line,
3796                                          const char *pos)
3797 {
3798         if (hexstr2bin(pos, config->os_version, 4)) {
3799                 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
3800                 return -1;
3801         }
3802         wpa_printf(MSG_DEBUG, "os_version=%08x",
3803                    WPA_GET_BE32(config->os_version));
3804         return 0;
3805 }
3806
3807
3808 static int wpa_config_process_wps_vendor_ext_m1(
3809         const struct global_parse_data *data,
3810         struct wpa_config *config, int line, const char *pos)
3811 {
3812         struct wpabuf *tmp;
3813         int len = os_strlen(pos) / 2;
3814         u8 *p;
3815
3816         if (!len) {
3817                 wpa_printf(MSG_ERROR, "Line %d: "
3818                            "invalid wps_vendor_ext_m1", line);
3819                 return -1;
3820         }
3821
3822         tmp = wpabuf_alloc(len);
3823         if (tmp) {
3824                 p = wpabuf_put(tmp, len);
3825
3826                 if (hexstr2bin(pos, p, len)) {
3827                         wpa_printf(MSG_ERROR, "Line %d: "
3828                                    "invalid wps_vendor_ext_m1", line);
3829                         wpabuf_free(tmp);
3830                         return -1;
3831                 }
3832
3833                 wpabuf_free(config->wps_vendor_ext_m1);
3834                 config->wps_vendor_ext_m1 = tmp;
3835         } else {
3836                 wpa_printf(MSG_ERROR, "Can not allocate "
3837                            "memory for wps_vendor_ext_m1");
3838                 return -1;
3839         }
3840
3841         return 0;
3842 }
3843
3844 #endif /* CONFIG_WPS */
3845
3846 #ifdef CONFIG_P2P
3847 static int wpa_config_process_sec_device_type(
3848         const struct global_parse_data *data,
3849         struct wpa_config *config, int line, const char *pos)
3850 {
3851         int idx;
3852
3853         if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
3854                 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
3855                            "items", line);
3856                 return -1;
3857         }
3858
3859         idx = config->num_sec_device_types;
3860
3861         if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
3862                 return -1;
3863
3864         config->num_sec_device_types++;
3865         return 0;
3866 }
3867
3868
3869 static int wpa_config_process_p2p_pref_chan(
3870         const struct global_parse_data *data,
3871         struct wpa_config *config, int line, const char *pos)
3872 {
3873         struct p2p_channel *pref = NULL, *n;
3874         unsigned int num = 0;
3875         const char *pos2;
3876         u8 op_class, chan;
3877
3878         /* format: class:chan,class:chan,... */
3879
3880         while (*pos) {
3881                 op_class = atoi(pos);
3882                 pos2 = os_strchr(pos, ':');
3883                 if (pos2 == NULL)
3884                         goto fail;
3885                 pos2++;
3886                 chan = atoi(pos2);
3887
3888                 n = os_realloc_array(pref, num + 1,
3889                                      sizeof(struct p2p_channel));
3890                 if (n == NULL)
3891                         goto fail;
3892                 pref = n;
3893                 pref[num].op_class = op_class;
3894                 pref[num].chan = chan;
3895                 num++;
3896
3897                 pos = os_strchr(pos2, ',');
3898                 if (pos == NULL)
3899                         break;
3900                 pos++;
3901         }
3902
3903         os_free(config->p2p_pref_chan);
3904         config->p2p_pref_chan = pref;
3905         config->num_p2p_pref_chan = num;
3906         wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
3907                     (u8 *) config->p2p_pref_chan,
3908                     config->num_p2p_pref_chan * sizeof(struct p2p_channel));
3909
3910         return 0;
3911
3912 fail:
3913         os_free(pref);
3914         wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
3915         return -1;
3916 }
3917
3918
3919 static int wpa_config_process_p2p_no_go_freq(
3920         const struct global_parse_data *data,
3921         struct wpa_config *config, int line, const char *pos)
3922 {
3923         int ret;
3924
3925         ret = freq_range_list_parse(&config->p2p_no_go_freq, pos);
3926         if (ret < 0) {
3927                 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_no_go_freq", line);
3928                 return -1;
3929         }
3930
3931         wpa_printf(MSG_DEBUG, "P2P: p2p_no_go_freq with %u items",
3932                    config->p2p_no_go_freq.num);
3933
3934         return 0;
3935 }
3936
3937 #endif /* CONFIG_P2P */
3938
3939
3940 static int wpa_config_process_hessid(
3941         const struct global_parse_data *data,
3942         struct wpa_config *config, int line, const char *pos)
3943 {
3944         if (hwaddr_aton2(pos, config->hessid) < 0) {
3945                 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
3946                            line, pos);
3947                 return -1;
3948         }
3949
3950         return 0;
3951 }
3952
3953
3954 static int wpa_config_process_sae_groups(
3955         const struct global_parse_data *data,
3956         struct wpa_config *config, int line, const char *pos)
3957 {
3958         int *groups = wpa_config_parse_int_array(pos);
3959         if (groups == NULL) {
3960                 wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'",
3961                            line, pos);
3962                 return -1;
3963         }
3964
3965         os_free(config->sae_groups);
3966         config->sae_groups = groups;
3967
3968         return 0;
3969 }
3970
3971
3972 static int wpa_config_process_ap_vendor_elements(
3973         const struct global_parse_data *data,
3974         struct wpa_config *config, int line, const char *pos)
3975 {
3976         struct wpabuf *tmp;
3977         int len = os_strlen(pos) / 2;
3978         u8 *p;
3979
3980         if (!len) {
3981                 wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements",
3982                            line);
3983                 return -1;
3984         }
3985
3986         tmp = wpabuf_alloc(len);
3987         if (tmp) {
3988                 p = wpabuf_put(tmp, len);
3989
3990                 if (hexstr2bin(pos, p, len)) {
3991                         wpa_printf(MSG_ERROR, "Line %d: invalid "
3992                                    "ap_vendor_elements", line);
3993                         wpabuf_free(tmp);
3994                         return -1;
3995                 }
3996
3997                 wpabuf_free(config->ap_vendor_elements);
3998                 config->ap_vendor_elements = tmp;
3999         } else {
4000                 wpa_printf(MSG_ERROR, "Cannot allocate memory for "
4001                            "ap_vendor_elements");
4002                 return -1;
4003         }
4004
4005         return 0;
4006 }
4007
4008
4009 #ifdef CONFIG_CTRL_IFACE
4010 static int wpa_config_process_no_ctrl_interface(
4011         const struct global_parse_data *data,
4012         struct wpa_config *config, int line, const char *pos)
4013 {
4014         wpa_printf(MSG_DEBUG, "no_ctrl_interface -> ctrl_interface=NULL");
4015         os_free(config->ctrl_interface);
4016         config->ctrl_interface = NULL;
4017         return 0;
4018 }
4019 #endif /* CONFIG_CTRL_IFACE */
4020
4021
4022 static int wpa_config_get_int(const char *name, struct wpa_config *config,
4023                               long offset, char *buf, size_t buflen,
4024                               int pretty_print)
4025 {
4026         int *val = (int *) (((u8 *) config) + (long) offset);
4027
4028         if (pretty_print)
4029                 return os_snprintf(buf, buflen, "%s=%d\n", name, *val);
4030         return os_snprintf(buf, buflen, "%d", *val);
4031 }
4032
4033
4034 static int wpa_config_get_str(const char *name, struct wpa_config *config,
4035                               long offset, char *buf, size_t buflen,
4036                               int pretty_print)
4037 {
4038         char **val = (char **) (((u8 *) config) + (long) offset);
4039         int res;
4040
4041         if (pretty_print)
4042                 res = os_snprintf(buf, buflen, "%s=%s\n", name,
4043                                   *val ? *val : "null");
4044         else if (!*val)
4045                 return -1;
4046         else
4047                 res = os_snprintf(buf, buflen, "%s", *val);
4048         if (os_snprintf_error(buflen, res))
4049                 res = -1;
4050
4051         return res;
4052 }
4053
4054
4055 #ifdef CONFIG_P2P
4056 static int wpa_config_get_ipv4(const char *name, struct wpa_config *config,
4057                                long offset, char *buf, size_t buflen,
4058                                int pretty_print)
4059 {
4060         void *val = ((u8 *) config) + (long) offset;
4061         int res;
4062         char addr[INET_ADDRSTRLEN];
4063
4064         if (!val || !inet_ntop(AF_INET, val, addr, sizeof(addr)))
4065                 return -1;
4066
4067         if (pretty_print)
4068                 res = os_snprintf(buf, buflen, "%s=%s\n", name, addr);
4069         else
4070                 res = os_snprintf(buf, buflen, "%s", addr);
4071
4072         if (os_snprintf_error(buflen, res))
4073                 res = -1;
4074
4075         return res;
4076 }
4077 #endif /* CONFIG_P2P */
4078
4079
4080 #ifdef OFFSET
4081 #undef OFFSET
4082 #endif /* OFFSET */
4083 /* OFFSET: Get offset of a variable within the wpa_config structure */
4084 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
4085
4086 #define FUNC(f) #f, wpa_config_process_ ## f, NULL, OFFSET(f), NULL, NULL
4087 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL, NULL
4088 #define _INT(f) #f, wpa_global_config_parse_int, wpa_config_get_int, OFFSET(f)
4089 #define INT(f) _INT(f), NULL, NULL
4090 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
4091 #define _STR(f) #f, wpa_global_config_parse_str, wpa_config_get_str, OFFSET(f)
4092 #define STR(f) _STR(f), NULL, NULL
4093 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
4094 #define BIN(f) #f, wpa_global_config_parse_bin, NULL, OFFSET(f), NULL, NULL
4095 #define IPV4(f) #f, wpa_global_config_parse_ipv4, wpa_config_get_ipv4,  \
4096         OFFSET(f), NULL, NULL
4097
4098 static const struct global_parse_data global_fields[] = {
4099 #ifdef CONFIG_CTRL_IFACE
4100         { STR(ctrl_interface), 0 },
4101         { FUNC_NO_VAR(no_ctrl_interface), 0 },
4102         { STR(ctrl_interface_group), 0 } /* deprecated */,
4103 #endif /* CONFIG_CTRL_IFACE */
4104 #ifdef CONFIG_MACSEC
4105         { INT_RANGE(eapol_version, 1, 3), 0 },
4106 #else /* CONFIG_MACSEC */
4107         { INT_RANGE(eapol_version, 1, 2), 0 },
4108 #endif /* CONFIG_MACSEC */
4109         { INT(ap_scan), 0 },
4110         { FUNC(bgscan), 0 },
4111 #ifdef CONFIG_MESH
4112         { INT(user_mpm), 0 },
4113         { INT_RANGE(max_peer_links, 0, 255), 0 },
4114         { INT(mesh_max_inactivity), 0 },
4115 #endif /* CONFIG_MESH */
4116         { INT(disable_scan_offload), 0 },
4117         { INT(fast_reauth), 0 },
4118         { STR(opensc_engine_path), 0 },
4119         { STR(pkcs11_engine_path), 0 },
4120         { STR(pkcs11_module_path), 0 },
4121         { STR(openssl_ciphers), 0 },
4122         { STR(pcsc_reader), 0 },
4123         { STR(pcsc_pin), 0 },
4124         { INT(external_sim), 0 },
4125         { STR(driver_param), 0 },
4126         { INT(dot11RSNAConfigPMKLifetime), 0 },
4127         { INT(dot11RSNAConfigPMKReauthThreshold), 0 },
4128         { INT(dot11RSNAConfigSATimeout), 0 },
4129 #ifndef CONFIG_NO_CONFIG_WRITE
4130         { INT(update_config), 0 },
4131 #endif /* CONFIG_NO_CONFIG_WRITE */
4132         { FUNC_NO_VAR(load_dynamic_eap), 0 },
4133 #ifdef CONFIG_WPS
4134         { FUNC(uuid), CFG_CHANGED_UUID },
4135         { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME },
4136         { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
4137         { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
4138         { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
4139         { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
4140         { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
4141         { FUNC(os_version), CFG_CHANGED_OS_VERSION },
4142         { STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
4143         { INT_RANGE(wps_cred_processing, 0, 2), 0 },
4144         { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
4145 #endif /* CONFIG_WPS */
4146 #ifdef CONFIG_P2P
4147         { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
4148         { INT(p2p_listen_reg_class), 0 },
4149         { INT(p2p_listen_channel), 0 },
4150         { INT(p2p_oper_reg_class), CFG_CHANGED_P2P_OPER_CHANNEL },
4151         { INT(p2p_oper_channel), CFG_CHANGED_P2P_OPER_CHANNEL },
4152         { INT_RANGE(p2p_go_intent, 0, 15), 0 },
4153         { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
4154         { INT_RANGE(persistent_reconnect, 0, 1), 0 },
4155         { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
4156         { INT(p2p_group_idle), 0 },
4157         { INT_RANGE(p2p_passphrase_len, 8, 63),
4158           CFG_CHANGED_P2P_PASSPHRASE_LEN },
4159         { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
4160         { FUNC(p2p_no_go_freq), CFG_CHANGED_P2P_PREF_CHAN },
4161         { INT_RANGE(p2p_add_cli_chan, 0, 1), 0 },
4162         { INT_RANGE(p2p_optimize_listen_chan, 0, 1), 0 },
4163         { INT(p2p_go_ht40), 0 },
4164         { INT(p2p_go_vht), 0 },
4165         { INT(p2p_disabled), 0 },
4166         { INT_RANGE(p2p_go_ctwindow, 0, 127), 0 },
4167         { INT(p2p_no_group_iface), 0 },
4168         { INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 },
4169         { IPV4(ip_addr_go), 0 },
4170         { IPV4(ip_addr_mask), 0 },
4171         { IPV4(ip_addr_start), 0 },
4172         { IPV4(ip_addr_end), 0 },
4173 #endif /* CONFIG_P2P */
4174         { FUNC(country), CFG_CHANGED_COUNTRY },
4175         { INT(bss_max_count), 0 },
4176         { INT(bss_expiration_age), 0 },
4177         { INT(bss_expiration_scan_count), 0 },
4178         { INT_RANGE(filter_ssids, 0, 1), 0 },
4179         { INT_RANGE(filter_rssi, -100, 0), 0 },
4180         { INT(max_num_sta), 0 },
4181         { INT_RANGE(disassoc_low_ack, 0, 1), 0 },
4182 #ifdef CONFIG_HS20
4183         { INT_RANGE(hs20, 0, 1), 0 },
4184 #endif /* CONFIG_HS20 */
4185         { INT_RANGE(interworking, 0, 1), 0 },
4186         { FUNC(hessid), 0 },
4187         { INT_RANGE(access_network_type, 0, 15), 0 },
4188         { INT_RANGE(pbc_in_m1, 0, 1), 0 },
4189         { STR(autoscan), 0 },
4190         { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff),
4191           CFG_CHANGED_NFC_PASSWORD_TOKEN },
4192         { BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
4193         { BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
4194         { BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN },
4195         { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
4196         { INT(p2p_go_max_inactivity), 0 },
4197         { INT_RANGE(auto_interworking, 0, 1), 0 },
4198         { INT(okc), 0 },
4199         { INT(pmf), 0 },
4200         { FUNC(sae_groups), 0 },
4201         { INT(dtim_period), 0 },
4202         { INT(beacon_int), 0 },
4203         { FUNC(ap_vendor_elements), 0 },
4204         { INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
4205         { FUNC(freq_list), 0 },
4206         { INT(scan_cur_freq), 0 },
4207         { INT(sched_scan_interval), 0 },
4208         { INT(tdls_external_control), 0},
4209         { STR(osu_dir), 0 },
4210         { STR(wowlan_triggers), 0 },
4211         { INT(p2p_search_delay), 0},
4212         { INT(mac_addr), 0 },
4213         { INT(rand_addr_lifetime), 0 },
4214         { INT(preassoc_mac_addr), 0 },
4215         { INT(key_mgmt_offload), 0},
4216         { INT(passive_scan), 0 },
4217         { INT(reassoc_same_bss_optim), 0 },
4218 };
4219
4220 #undef FUNC
4221 #undef _INT
4222 #undef INT
4223 #undef INT_RANGE
4224 #undef _STR
4225 #undef STR
4226 #undef STR_RANGE
4227 #undef BIN
4228 #undef IPV4
4229 #define NUM_GLOBAL_FIELDS ARRAY_SIZE(global_fields)
4230
4231
4232 int wpa_config_dump_values(struct wpa_config *config, char *buf, size_t buflen)
4233 {
4234         int result = 0;
4235         size_t i;
4236
4237         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
4238                 const struct global_parse_data *field = &global_fields[i];
4239                 int tmp;
4240
4241                 if (!field->get)
4242                         continue;
4243
4244                 tmp = field->get(field->name, config, (long) field->param1,
4245                                  buf, buflen, 1);
4246                 if (tmp < 0)
4247                         return -1;
4248                 buf += tmp;
4249                 buflen -= tmp;
4250                 result += tmp;
4251         }
4252         return result;
4253 }
4254
4255
4256 int wpa_config_get_value(const char *name, struct wpa_config *config,
4257                          char *buf, size_t buflen)
4258 {
4259         size_t i;
4260
4261         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
4262                 const struct global_parse_data *field = &global_fields[i];
4263
4264                 if (os_strcmp(name, field->name) != 0)
4265                         continue;
4266                 if (!field->get)
4267                         break;
4268                 return field->get(name, config, (long) field->param1,
4269                                   buf, buflen, 0);
4270         }
4271
4272         return -1;
4273 }
4274
4275
4276 int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
4277 {
4278         size_t i;
4279         int ret = 0;
4280
4281         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
4282                 const struct global_parse_data *field = &global_fields[i];
4283                 size_t flen = os_strlen(field->name);
4284                 if (os_strncmp(pos, field->name, flen) != 0 ||
4285                     pos[flen] != '=')
4286                         continue;
4287
4288                 if (field->parser(field, config, line, pos + flen + 1)) {
4289                         wpa_printf(MSG_ERROR, "Line %d: failed to "
4290                                    "parse '%s'.", line, pos);
4291                         ret = -1;
4292                 }
4293                 if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN)
4294                         config->wps_nfc_pw_from_config = 1;
4295                 config->changed_parameters |= field->changed_flag;
4296                 break;
4297         }
4298         if (i == NUM_GLOBAL_FIELDS) {
4299 #ifdef CONFIG_AP
4300                 if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
4301                         char *tmp = os_strchr(pos, '=');
4302                         if (tmp == NULL) {
4303                                 if (line < 0)
4304                                         return -1;
4305                                 wpa_printf(MSG_ERROR, "Line %d: invalid line "
4306                                            "'%s'", line, pos);
4307                                 return -1;
4308                         }
4309                         *tmp++ = '\0';
4310                         if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
4311                                                   tmp)) {
4312                                 wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
4313                                            "AC item", line);
4314                                 return -1;
4315                         }
4316                 }
4317 #endif /* CONFIG_AP */
4318                 if (line < 0)
4319                         return -1;
4320                 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
4321                            line, pos);
4322                 ret = -1;
4323         }
4324
4325         return ret;
4326 }