wpa_supplicant/config.c

   1 /*
   2  * WPA Supplicant / Configuration parser and common functions
   3  * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "utils/uuid.h"
  13 #include "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 (res < 0 || res >= 20) {
 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_bssid(const struct parse_data *data,
 239                                   struct wpa_ssid *ssid, int line,
 240                                   const char *value)
 241 {
 242         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
 243             os_strcmp(value, "any") == 0) {
 244                 ssid->bssid_set = 0;
 245                 wpa_printf(MSG_MSGDUMP, "BSSID any");
 246                 return 0;
 247         }
 248         if (hwaddr_aton(value, ssid->bssid)) {
 249                 wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
 250                            line, value);
 251                 return -1;
 252         }
 253         ssid->bssid_set = 1;
 254         wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
 255         return 0;
 256 }
 257
 258
 259 #ifndef NO_CONFIG_WRITE
 260 static char * wpa_config_write_bssid(const struct parse_data *data,
 261                                      struct wpa_ssid *ssid)
 262 {
 263         char *value;
 264         int res;
 265
 266         if (!ssid->bssid_set)
 267                 return NULL;
 268
 269         value = os_malloc(20);
 270         if (value == NULL)
 271                 return NULL;
 272         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
 273         if (res < 0 || res >= 20) {
 274                 os_free(value);
 275                 return NULL;
 276         }
 277         value[20 - 1] = '\0';
 278         return value;
 279 }
 280 #endif /* NO_CONFIG_WRITE */
 281
 282
 283 static int wpa_config_parse_psk(const struct parse_data *data,
 284                                 struct wpa_ssid *ssid, int line,
 285                                 const char *value)
 286 {
 287 #ifdef CONFIG_EXT_PASSWORD
 288         if (os_strncmp(value, "ext:", 4) == 0) {
 289                 os_free(ssid->passphrase);
 290                 ssid->passphrase = NULL;
 291                 ssid->psk_set = 0;
 292                 os_free(ssid->ext_psk);
 293                 ssid->ext_psk = os_strdup(value + 4);
 294                 if (ssid->ext_psk == NULL)
 295                         return -1;
 296                 wpa_printf(MSG_DEBUG, "PSK: External password '%s'",
 297                            ssid->ext_psk);
 298                 return 0;
 299         }
 300 #endif /* CONFIG_EXT_PASSWORD */
 301
 302         if (*value == '"') {
 303 #ifndef CONFIG_NO_PBKDF2
 304                 const char *pos;
 305                 size_t len;
 306
 307                 value++;
 308                 pos = os_strrchr(value, '"');
 309                 if (pos)
 310                         len = pos - value;
 311                 else
 312                         len = os_strlen(value);
 313                 if (len < 8 || len > 63) {
 314                         wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
 315                                    "length %lu (expected: 8..63) '%s'.",
 316                                    line, (unsigned long) len, value);
 317                         return -1;
 318                 }
 319                 wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
 320                                       (u8 *) value, len);
 321                 if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
 322                     os_memcmp(ssid->passphrase, value, len) == 0)
 323                         return 0;
 324                 ssid->psk_set = 0;
 325                 os_free(ssid->passphrase);
 326                 ssid->passphrase = dup_binstr(value, len);
 327                 if (ssid->passphrase == NULL)
 328                         return -1;
 329                 return 0;
 330 #else /* CONFIG_NO_PBKDF2 */
 331                 wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
 332                            "supported.", line);
 333                 return -1;
 334 #endif /* CONFIG_NO_PBKDF2 */
 335         }
 336
 337         if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
 338             value[PMK_LEN * 2] != '\0') {
 339                 wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
 340                            line, value);
 341                 return -1;
 342         }
 343
 344         os_free(ssid->passphrase);
 345         ssid->passphrase = NULL;
 346
 347         ssid->psk_set = 1;
 348         wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
 349         return 0;
 350 }
 351
 352
 353 #ifndef NO_CONFIG_WRITE
 354 static char * wpa_config_write_psk(const struct parse_data *data,
 355                                    struct wpa_ssid *ssid)
 356 {
 357 #ifdef CONFIG_EXT_PASSWORD
 358         if (ssid->ext_psk) {
 359                 size_t len = 4 + os_strlen(ssid->ext_psk) + 1;
 360                 char *buf = os_malloc(len);
 361                 if (buf == NULL)
 362                         return NULL;
 363                 os_snprintf(buf, len, "ext:%s", ssid->ext_psk);
 364                 return buf;
 365         }
 366 #endif /* CONFIG_EXT_PASSWORD */
 367
 368         if (ssid->passphrase)
 369                 return wpa_config_write_string_ascii(
 370                         (const u8 *) ssid->passphrase,
 371                         os_strlen(ssid->passphrase));
 372
 373         if (ssid->psk_set)
 374                 return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
 375
 376         return NULL;
 377 }
 378 #endif /* NO_CONFIG_WRITE */
 379
 380
 381 static int wpa_config_parse_proto(const struct parse_data *data,
 382                                   struct wpa_ssid *ssid, int line,
 383                                   const char *value)
 384 {
 385         int val = 0, last, errors = 0;
 386         char *start, *end, *buf;
 387
 388         buf = os_strdup(value);
 389         if (buf == NULL)
 390                 return -1;
 391         start = buf;
 392
 393         while (*start != '\0') {
 394                 while (*start == ' ' || *start == '\t')
 395                         start++;
 396                 if (*start == '\0')
 397                         break;
 398                 end = start;
 399                 while (*end != ' ' && *end != '\t' && *end != '\0')
 400                         end++;
 401                 last = *end == '\0';
 402                 *end = '\0';
 403                 if (os_strcmp(start, "WPA") == 0)
 404                         val |= WPA_PROTO_WPA;
 405                 else if (os_strcmp(start, "RSN") == 0 ||
 406                          os_strcmp(start, "WPA2") == 0)
 407                         val |= WPA_PROTO_RSN;
 408                 else {
 409                         wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
 410                                    line, start);
 411                         errors++;
 412                 }
 413
 414                 if (last)
 415                         break;
 416                 start = end + 1;
 417         }
 418         os_free(buf);
 419
 420         if (val == 0) {
 421                 wpa_printf(MSG_ERROR,
 422                            "Line %d: no proto values configured.", line);
 423                 errors++;
 424         }
 425
 426         wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
 427         ssid->proto = val;
 428         return errors ? -1 : 0;
 429 }
 430
 431
 432 #ifndef NO_CONFIG_WRITE
 433 static char * wpa_config_write_proto(const struct parse_data *data,
 434                                      struct wpa_ssid *ssid)
 435 {
 436         int first = 1, ret;
 437         char *buf, *pos, *end;
 438
 439         pos = buf = os_zalloc(10);
 440         if (buf == NULL)
 441                 return NULL;
 442         end = buf + 10;
 443
 444         if (ssid->proto & WPA_PROTO_WPA) {
 445                 ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " ");
 446                 if (ret < 0 || ret >= end - pos)
 447                         return buf;
 448                 pos += ret;
 449                 first = 0;
 450         }
 451
 452         if (ssid->proto & WPA_PROTO_RSN) {
 453                 ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " ");
 454                 if (ret < 0 || ret >= end - pos)
 455                         return buf;
 456                 pos += ret;
 457                 first = 0;
 458         }
 459
 460         return buf;
 461 }
 462 #endif /* NO_CONFIG_WRITE */
 463
 464
 465 static int wpa_config_parse_key_mgmt(const struct parse_data *data,
 466                                      struct wpa_ssid *ssid, int line,
 467                                      const char *value)
 468 {
 469         int val = 0, last, errors = 0;
 470         char *start, *end, *buf;
 471
 472         buf = os_strdup(value);
 473         if (buf == NULL)
 474                 return -1;
 475         start = buf;
 476
 477         while (*start != '\0') {
 478                 while (*start == ' ' || *start == '\t')
 479                         start++;
 480                 if (*start == '\0')
 481                         break;
 482                 end = start;
 483                 while (*end != ' ' && *end != '\t' && *end != '\0')
 484                         end++;
 485                 last = *end == '\0';
 486                 *end = '\0';
 487                 if (os_strcmp(start, "WPA-PSK") == 0)
 488                         val |= WPA_KEY_MGMT_PSK;
 489                 else if (os_strcmp(start, "WPA-EAP") == 0)
 490                         val |= WPA_KEY_MGMT_IEEE8021X;
 491                 else if (os_strcmp(start, "IEEE8021X") == 0)
 492                         val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
 493                 else if (os_strcmp(start, "NONE") == 0)
 494                         val |= WPA_KEY_MGMT_NONE;
 495                 else if (os_strcmp(start, "WPA-NONE") == 0)
 496                         val |= WPA_KEY_MGMT_WPA_NONE;
 497 #ifdef CONFIG_IEEE80211R
 498                 else if (os_strcmp(start, "FT-PSK") == 0)
 499                         val |= WPA_KEY_MGMT_FT_PSK;
 500                 else if (os_strcmp(start, "FT-EAP") == 0)
 501                         val |= WPA_KEY_MGMT_FT_IEEE8021X;
 502 #endif /* CONFIG_IEEE80211R */
 503 #ifdef CONFIG_IEEE80211W
 504                 else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
 505                         val |= WPA_KEY_MGMT_PSK_SHA256;
 506                 else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
 507                         val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
 508 #endif /* CONFIG_IEEE80211W */
 509 #ifdef CONFIG_WPS
 510                 else if (os_strcmp(start, "WPS") == 0)
 511                         val |= WPA_KEY_MGMT_WPS;
 512 #endif /* CONFIG_WPS */
 513 #ifdef CONFIG_SAE
 514                 else if (os_strcmp(start, "SAE") == 0)
 515                         val |= WPA_KEY_MGMT_SAE;
 516                 else if (os_strcmp(start, "FT-SAE") == 0)
 517                         val |= WPA_KEY_MGMT_FT_SAE;
 518 #endif /* CONFIG_SAE */
 519                 else {
 520                         wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
 521                                    line, start);
 522                         errors++;
 523                 }
 524
 525                 if (last)
 526                         break;
 527                 start = end + 1;
 528         }
 529         os_free(buf);
 530
 531         if (val == 0) {
 532                 wpa_printf(MSG_ERROR,
 533                            "Line %d: no key_mgmt values configured.", line);
 534                 errors++;
 535         }
 536
 537         wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
 538         ssid->key_mgmt = val;
 539         return errors ? -1 : 0;
 540 }
 541
 542
 543 #ifndef NO_CONFIG_WRITE
 544 static char * wpa_config_write_key_mgmt(const struct parse_data *data,
 545                                         struct wpa_ssid *ssid)
 546 {
 547         char *buf, *pos, *end;
 548         int ret;
 549
 550         pos = buf = os_zalloc(100);
 551         if (buf == NULL)
 552                 return NULL;
 553         end = buf + 100;
 554
 555         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
 556                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
 557                                   pos == buf ? "" : " ");
 558                 if (ret < 0 || ret >= end - pos) {
 559                         end[-1] = '\0';
 560                         return buf;
 561                 }
 562                 pos += ret;
 563         }
 564
 565         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
 566                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
 567                                   pos == buf ? "" : " ");
 568                 if (ret < 0 || ret >= end - pos) {
 569                         end[-1] = '\0';
 570                         return buf;
 571                 }
 572                 pos += ret;
 573         }
 574
 575         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 576                 ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
 577                                   pos == buf ? "" : " ");
 578                 if (ret < 0 || ret >= end - pos) {
 579                         end[-1] = '\0';
 580                         return buf;
 581                 }
 582                 pos += ret;
 583         }
 584
 585         if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
 586                 ret = os_snprintf(pos, end - pos, "%sNONE",
 587                                   pos == buf ? "" : " ");
 588                 if (ret < 0 || ret >= end - pos) {
 589                         end[-1] = '\0';
 590                         return buf;
 591                 }
 592                 pos += ret;
 593         }
 594
 595         if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
 596                 ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
 597                                   pos == buf ? "" : " ");
 598                 if (ret < 0 || ret >= end - pos) {
 599                         end[-1] = '\0';
 600                         return buf;
 601                 }
 602                 pos += ret;
 603         }
 604
 605 #ifdef CONFIG_IEEE80211R
 606         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) {
 607                 ret = os_snprintf(pos, end - pos, "%sFT-PSK",
 608                                   pos == buf ? "" : " ");
 609                 if (ret < 0 || ret >= end - pos) {
 610                         end[-1] = '\0';
 611                         return buf;
 612                 }
 613                 pos += ret;
 614         }
 615
 616         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
 617                 ret = os_snprintf(pos, end - pos, "%sFT-EAP",
 618                                   pos == buf ? "" : " ");
 619                 if (ret < 0 || ret >= end - pos) {
 620                         end[-1] = '\0';
 621                         return buf;
 622                 }
 623                 pos += ret;
 624         }
 625 #endif /* CONFIG_IEEE80211R */
 626
 627 #ifdef CONFIG_IEEE80211W
 628         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
 629                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
 630                                   pos == buf ? "" : " ");
 631                 if (ret < 0 || ret >= end - pos) {
 632                         end[-1] = '\0';
 633                         return buf;
 634                 }
 635                 pos += ret;
 636         }
 637
 638         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 639                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
 640                                   pos == buf ? "" : " ");
 641                 if (ret < 0 || ret >= end - pos) {
 642                         end[-1] = '\0';
 643                         return buf;
 644                 }
 645                 pos += ret;
 646         }
 647 #endif /* CONFIG_IEEE80211W */
 648
 649 #ifdef CONFIG_WPS
 650         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 651                 ret = os_snprintf(pos, end - pos, "%sWPS",
 652                                   pos == buf ? "" : " ");
 653                 if (ret < 0 || ret >= end - pos) {
 654                         end[-1] = '\0';
 655                         return buf;
 656                 }
 657                 pos += ret;
 658         }
 659 #endif /* CONFIG_WPS */
 660
 661         return buf;
 662 }
 663 #endif /* NO_CONFIG_WRITE */
 664
 665
 666 static int wpa_config_parse_cipher(int line, const char *value)
 667 {
 668         int val = wpa_parse_cipher(value);
 669         if (val < 0) {
 670                 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
 671                            line, value);
 672                 return -1;
 673         }
 674         if (val == 0) {
 675                 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
 676                            line);
 677                 return -1;
 678         }
 679         return val;
 680 }
 681
 682
 683 #ifndef NO_CONFIG_WRITE
 684 static char * wpa_config_write_cipher(int cipher)
 685 {
 686         char *buf = os_zalloc(50);
 687         if (buf == NULL)
 688                 return NULL;
 689
 690         if (wpa_write_ciphers(buf, buf + 50, cipher, " ") < 0) {
 691                 os_free(buf);
 692                 return NULL;
 693         }
 694
 695         return buf;
 696 }
 697 #endif /* NO_CONFIG_WRITE */
 698
 699
 700 static int wpa_config_parse_pairwise(const struct parse_data *data,
 701                                      struct wpa_ssid *ssid, int line,
 702                                      const char *value)
 703 {
 704         int val;
 705         val = wpa_config_parse_cipher(line, value);
 706         if (val == -1)
 707                 return -1;
 708         if (val & ~WPA_ALLOWED_PAIRWISE_CIPHERS) {
 709                 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
 710                            "(0x%x).", line, val);
 711                 return -1;
 712         }
 713
 714         wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
 715         ssid->pairwise_cipher = val;
 716         return 0;
 717 }
 718
 719
 720 #ifndef NO_CONFIG_WRITE
 721 static char * wpa_config_write_pairwise(const struct parse_data *data,
 722                                         struct wpa_ssid *ssid)
 723 {
 724         return wpa_config_write_cipher(ssid->pairwise_cipher);
 725 }
 726 #endif /* NO_CONFIG_WRITE */
 727
 728
 729 static int wpa_config_parse_group(const struct parse_data *data,
 730                                   struct wpa_ssid *ssid, int line,
 731                                   const char *value)
 732 {
 733         int val;
 734         val = wpa_config_parse_cipher(line, value);
 735         if (val == -1)
 736                 return -1;
 737         if (val & ~WPA_ALLOWED_GROUP_CIPHERS) {
 738                 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
 739                            "(0x%x).", line, val);
 740                 return -1;
 741         }
 742
 743         wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
 744         ssid->group_cipher = val;
 745         return 0;
 746 }
 747
 748
 749 #ifndef NO_CONFIG_WRITE
 750 static char * wpa_config_write_group(const struct parse_data *data,
 751                                      struct wpa_ssid *ssid)
 752 {
 753         return wpa_config_write_cipher(ssid->group_cipher);
 754 }
 755 #endif /* NO_CONFIG_WRITE */
 756
 757
 758 static int wpa_config_parse_auth_alg(const struct parse_data *data,
 759                                      struct wpa_ssid *ssid, int line,
 760                                      const char *value)
 761 {
 762         int val = 0, last, errors = 0;
 763         char *start, *end, *buf;
 764
 765         buf = os_strdup(value);
 766         if (buf == NULL)
 767                 return -1;
 768         start = buf;
 769
 770         while (*start != '\0') {
 771                 while (*start == ' ' || *start == '\t')
 772                         start++;
 773                 if (*start == '\0')
 774                         break;
 775                 end = start;
 776                 while (*end != ' ' && *end != '\t' && *end != '\0')
 777                         end++;
 778                 last = *end == '\0';
 779                 *end = '\0';
 780                 if (os_strcmp(start, "OPEN") == 0)
 781                         val |= WPA_AUTH_ALG_OPEN;
 782                 else if (os_strcmp(start, "SHARED") == 0)
 783                         val |= WPA_AUTH_ALG_SHARED;
 784                 else if (os_strcmp(start, "LEAP") == 0)
 785                         val |= WPA_AUTH_ALG_LEAP;
 786                 else {
 787                         wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
 788                                    line, start);
 789                         errors++;
 790                 }
 791
 792                 if (last)
 793                         break;
 794                 start = end + 1;
 795         }
 796         os_free(buf);
 797
 798         if (val == 0) {
 799                 wpa_printf(MSG_ERROR,
 800                            "Line %d: no auth_alg values configured.", line);
 801                 errors++;
 802         }
 803
 804         wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
 805         ssid->auth_alg = val;
 806         return errors ? -1 : 0;
 807 }
 808
 809
 810 #ifndef NO_CONFIG_WRITE
 811 static char * wpa_config_write_auth_alg(const struct parse_data *data,
 812                                         struct wpa_ssid *ssid)
 813 {
 814         char *buf, *pos, *end;
 815         int ret;
 816
 817         pos = buf = os_zalloc(30);
 818         if (buf == NULL)
 819                 return NULL;
 820         end = buf + 30;
 821
 822         if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
 823                 ret = os_snprintf(pos, end - pos, "%sOPEN",
 824                                   pos == buf ? "" : " ");
 825                 if (ret < 0 || ret >= end - pos) {
 826                         end[-1] = '\0';
 827                         return buf;
 828                 }
 829                 pos += ret;
 830         }
 831
 832         if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
 833                 ret = os_snprintf(pos, end - pos, "%sSHARED",
 834                                   pos == buf ? "" : " ");
 835                 if (ret < 0 || ret >= end - pos) {
 836                         end[-1] = '\0';
 837                         return buf;
 838                 }
 839                 pos += ret;
 840         }
 841
 842         if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
 843                 ret = os_snprintf(pos, end - pos, "%sLEAP",
 844                                   pos == buf ? "" : " ");
 845                 if (ret < 0 || ret >= end - pos) {
 846                         end[-1] = '\0';
 847                         return buf;
 848                 }
 849                 pos += ret;
 850         }
 851
 852         return buf;
 853 }
 854 #endif /* NO_CONFIG_WRITE */
 855
 856
 857 static int * wpa_config_parse_int_array(const char *value)
 858 {
 859         int *freqs;
 860         size_t used, len;
 861         const char *pos;
 862
 863         used = 0;
 864         len = 10;
 865         freqs = os_calloc(len + 1, sizeof(int));
 866         if (freqs == NULL)
 867                 return NULL;
 868
 869         pos = value;
 870         while (pos) {
 871                 while (*pos == ' ')
 872                         pos++;
 873                 if (used == len) {
 874                         int *n;
 875                         size_t i;
 876                         n = os_realloc_array(freqs, len * 2 + 1, sizeof(int));
 877                         if (n == NULL) {
 878                                 os_free(freqs);
 879                                 return NULL;
 880                         }
 881                         for (i = len; i <= len * 2; i++)
 882                                 n[i] = 0;
 883                         freqs = n;
 884                         len *= 2;
 885                 }
 886
 887                 freqs[used] = atoi(pos);
 888                 if (freqs[used] == 0)
 889                         break;
 890                 used++;
 891                 pos = os_strchr(pos + 1, ' ');
 892         }
 893
 894         return freqs;
 895 }
 896
 897
 898 static int wpa_config_parse_scan_freq(const struct parse_data *data,
 899                                       struct wpa_ssid *ssid, int line,
 900                                       const char *value)
 901 {
 902         int *freqs;
 903
 904         freqs = wpa_config_parse_int_array(value);
 905         if (freqs == NULL)
 906                 return -1;
 907         if (freqs[0] == 0) {
 908                 os_free(freqs);
 909                 freqs = NULL;
 910         }
 911         os_free(ssid->scan_freq);
 912         ssid->scan_freq = freqs;
 913
 914         return 0;
 915 }
 916
 917
 918 static int wpa_config_parse_freq_list(const struct parse_data *data,
 919                                       struct wpa_ssid *ssid, int line,
 920                                       const char *value)
 921 {
 922         int *freqs;
 923
 924         freqs = wpa_config_parse_int_array(value);
 925         if (freqs == NULL)
 926                 return -1;
 927         if (freqs[0] == 0) {
 928                 os_free(freqs);
 929                 freqs = NULL;
 930         }
 931         os_free(ssid->freq_list);
 932         ssid->freq_list = freqs;
 933
 934         return 0;
 935 }
 936
 937
 938 #ifndef NO_CONFIG_WRITE
 939 static char * wpa_config_write_freqs(const struct parse_data *data,
 940                                      const int *freqs)
 941 {
 942         char *buf, *pos, *end;
 943         int i, ret;
 944         size_t count;
 945
 946         if (freqs == NULL)
 947                 return NULL;
 948
 949         count = 0;
 950         for (i = 0; freqs[i]; i++)
 951                 count++;
 952
 953         pos = buf = os_zalloc(10 * count + 1);
 954         if (buf == NULL)
 955                 return NULL;
 956         end = buf + 10 * count + 1;
 957
 958         for (i = 0; freqs[i]; i++) {
 959                 ret = os_snprintf(pos, end - pos, "%s%u",
 960                                   i == 0 ? "" : " ", freqs[i]);
 961                 if (ret < 0 || ret >= end - pos) {
 962                         end[-1] = '\0';
 963                         return buf;
 964                 }
 965                 pos += ret;
 966         }
 967
 968         return buf;
 969 }
 970
 971
 972 static char * wpa_config_write_scan_freq(const struct parse_data *data,
 973                                          struct wpa_ssid *ssid)
 974 {
 975         return wpa_config_write_freqs(data, ssid->scan_freq);
 976 }
 977
 978
 979 static char * wpa_config_write_freq_list(const struct parse_data *data,
 980                                          struct wpa_ssid *ssid)
 981 {
 982         return wpa_config_write_freqs(data, ssid->freq_list);
 983 }
 984 #endif /* NO_CONFIG_WRITE */
 985
 986
 987 #ifdef IEEE8021X_EAPOL
 988 static int wpa_config_parse_eap(const struct parse_data *data,
 989                                 struct wpa_ssid *ssid, int line,
 990                                 const char *value)
 991 {
 992         int last, errors = 0;
 993         char *start, *end, *buf;
 994         struct eap_method_type *methods = NULL, *tmp;
 995         size_t num_methods = 0;
 996
 997         buf = os_strdup(value);
 998         if (buf == NULL)
 999                 return -1;
1000         start = buf;
1001
1002         while (*start != '\0') {
1003                 while (*start == ' ' || *start == '\t')
1004                         start++;
1005                 if (*start == '\0')
1006                         break;
1007                 end = start;
1008                 while (*end != ' ' && *end != '\t' && *end != '\0')
1009                         end++;
1010                 last = *end == '\0';
1011                 *end = '\0';
1012                 tmp = methods;
1013                 methods = os_realloc_array(methods, num_methods + 1,
1014                                            sizeof(*methods));
1015                 if (methods == NULL) {
1016                         os_free(tmp);
1017                         os_free(buf);
1018                         return -1;
1019                 }
1020                 methods[num_methods].method = eap_peer_get_type(
1021                         start, &methods[num_methods].vendor);
1022                 if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1023                     methods[num_methods].method == EAP_TYPE_NONE) {
1024                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
1025                                    "'%s'", line, start);
1026                         wpa_printf(MSG_ERROR, "You may need to add support for"
1027                                    " this EAP method during wpa_supplicant\n"
1028                                    "build time configuration.\n"
1029                                    "See README for more information.");
1030                         errors++;
1031                 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1032                            methods[num_methods].method == EAP_TYPE_LEAP)
1033                         ssid->leap++;
1034                 else
1035                         ssid->non_leap++;
1036                 num_methods++;
1037                 if (last)
1038                         break;
1039                 start = end + 1;
1040         }
1041         os_free(buf);
1042
1043         tmp = methods;
1044         methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods));
1045         if (methods == NULL) {
1046                 os_free(tmp);
1047                 return -1;
1048         }
1049         methods[num_methods].vendor = EAP_VENDOR_IETF;
1050         methods[num_methods].method = EAP_TYPE_NONE;
1051         num_methods++;
1052
1053         wpa_hexdump(MSG_MSGDUMP, "eap methods",
1054                     (u8 *) methods, num_methods * sizeof(*methods));
1055         os_free(ssid->eap.eap_methods);
1056         ssid->eap.eap_methods = methods;
1057         return errors ? -1 : 0;
1058 }
1059
1060
1061 static char * wpa_config_write_eap(const struct parse_data *data,
1062                                    struct wpa_ssid *ssid)
1063 {
1064         int i, ret;
1065         char *buf, *pos, *end;
1066         const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
1067         const char *name;
1068
1069         if (eap_methods == NULL)
1070                 return NULL;
1071
1072         pos = buf = os_zalloc(100);
1073         if (buf == NULL)
1074                 return NULL;
1075         end = buf + 100;
1076
1077         for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
1078                      eap_methods[i].method != EAP_TYPE_NONE; i++) {
1079                 name = eap_get_name(eap_methods[i].vendor,
1080                                     eap_methods[i].method);
1081                 if (name) {
1082                         ret = os_snprintf(pos, end - pos, "%s%s",
1083                                           pos == buf ? "" : " ", name);
1084                         if (ret < 0 || ret >= end - pos)
1085                                 break;
1086                         pos += ret;
1087                 }
1088         }
1089
1090         end[-1] = '\0';
1091
1092         return buf;
1093 }
1094
1095
1096 static int wpa_config_parse_password(const struct parse_data *data,
1097                                      struct wpa_ssid *ssid, int line,
1098                                      const char *value)
1099 {
1100         u8 *hash;
1101
1102         if (os_strcmp(value, "NULL") == 0) {
1103                 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
1104                 os_free(ssid->eap.password);
1105                 ssid->eap.password = NULL;
1106                 ssid->eap.password_len = 0;
1107                 return 0;
1108         }
1109
1110 #ifdef CONFIG_EXT_PASSWORD
1111         if (os_strncmp(value, "ext:", 4) == 0) {
1112                 char *name = os_strdup(value + 4);
1113                 if (name == NULL)
1114                         return -1;
1115                 os_free(ssid->eap.password);
1116                 ssid->eap.password = (u8 *) name;
1117                 ssid->eap.password_len = os_strlen(name);
1118                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1119                 ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD;
1120                 return 0;
1121         }
1122 #endif /* CONFIG_EXT_PASSWORD */
1123
1124         if (os_strncmp(value, "hash:", 5) != 0) {
1125                 char *tmp;
1126                 size_t res_len;
1127
1128                 tmp = wpa_config_parse_string(value, &res_len);
1129                 if (tmp == NULL) {
1130                         wpa_printf(MSG_ERROR, "Line %d: failed to parse "
1131                                    "password.", line);
1132                         return -1;
1133                 }
1134                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
1135                                       (u8 *) tmp, res_len);
1136
1137                 os_free(ssid->eap.password);
1138                 ssid->eap.password = (u8 *) tmp;
1139                 ssid->eap.password_len = res_len;
1140                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1141                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1142
1143                 return 0;
1144         }
1145
1146
1147         /* NtPasswordHash: hash:<32 hex digits> */
1148         if (os_strlen(value + 5) != 2 * 16) {
1149                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length "
1150                            "(expected 32 hex digits)", line);
1151                 return -1;
1152         }
1153
1154         hash = os_malloc(16);
1155         if (hash == NULL)
1156                 return -1;
1157
1158         if (hexstr2bin(value + 5, hash, 16)) {
1159                 os_free(hash);
1160                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
1161                 return -1;
1162         }
1163
1164         wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
1165
1166         os_free(ssid->eap.password);
1167         ssid->eap.password = hash;
1168         ssid->eap.password_len = 16;
1169         ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1170         ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1171
1172         return 0;
1173 }
1174
1175
1176 static char * wpa_config_write_password(const struct parse_data *data,
1177                                         struct wpa_ssid *ssid)
1178 {
1179         char *buf;
1180
1181         if (ssid->eap.password == NULL)
1182                 return NULL;
1183
1184 #ifdef CONFIG_EXT_PASSWORD
1185         if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) {
1186                 buf = os_zalloc(4 + ssid->eap.password_len + 1);
1187                 if (buf == NULL)
1188                         return NULL;
1189                 os_memcpy(buf, "ext:", 4);
1190                 os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len);
1191                 return buf;
1192         }
1193 #endif /* CONFIG_EXT_PASSWORD */
1194
1195         if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
1196                 return wpa_config_write_string(
1197                         ssid->eap.password, ssid->eap.password_len);
1198         }
1199
1200         buf = os_malloc(5 + 32 + 1);
1201         if (buf == NULL)
1202                 return NULL;
1203
1204         os_memcpy(buf, "hash:", 5);
1205         wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
1206
1207         return buf;
1208 }
1209 #endif /* IEEE8021X_EAPOL */
1210
1211
1212 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
1213                                     const char *value, int idx)
1214 {
1215         char *buf, title[20];
1216         int res;
1217
1218         buf = wpa_config_parse_string(value, len);
1219         if (buf == NULL) {
1220                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
1221                            line, idx, value);
1222                 return -1;
1223         }
1224         if (*len > MAX_WEP_KEY_LEN) {
1225                 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
1226                            line, idx, value);
1227                 os_free(buf);
1228                 return -1;
1229         }
1230         if (*len && *len != 5 && *len != 13 && *len != 16) {
1231                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - "
1232                            "this network block will be ignored",
1233                            line, (unsigned int) *len);
1234         }
1235         os_memcpy(key, buf, *len);
1236         os_free(buf);
1237         res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
1238         if (res >= 0 && (size_t) res < sizeof(title))
1239                 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
1240         return 0;
1241 }
1242
1243
1244 static int wpa_config_parse_wep_key0(const struct parse_data *data,
1245                                      struct wpa_ssid *ssid, int line,
1246                                      const char *value)
1247 {
1248         return wpa_config_parse_wep_key(ssid->wep_key[0],
1249                                         &ssid->wep_key_len[0], line,
1250                                         value, 0);
1251 }
1252
1253
1254 static int wpa_config_parse_wep_key1(const struct parse_data *data,
1255                                      struct wpa_ssid *ssid, int line,
1256                                      const char *value)
1257 {
1258         return wpa_config_parse_wep_key(ssid->wep_key[1],
1259                                         &ssid->wep_key_len[1], line,
1260                                         value, 1);
1261 }
1262
1263
1264 static int wpa_config_parse_wep_key2(const struct parse_data *data,
1265                                      struct wpa_ssid *ssid, int line,
1266                                      const char *value)
1267 {
1268         return wpa_config_parse_wep_key(ssid->wep_key[2],
1269                                         &ssid->wep_key_len[2], line,
1270                                         value, 2);
1271 }
1272
1273
1274 static int wpa_config_parse_wep_key3(const struct parse_data *data,
1275                                      struct wpa_ssid *ssid, int line,
1276                                      const char *value)
1277 {
1278         return wpa_config_parse_wep_key(ssid->wep_key[3],
1279                                         &ssid->wep_key_len[3], line,
1280                                         value, 3);
1281 }
1282
1283
1284 #ifndef NO_CONFIG_WRITE
1285 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
1286 {
1287         if (ssid->wep_key_len[idx] == 0)
1288                 return NULL;
1289         return wpa_config_write_string(ssid->wep_key[idx],
1290                                        ssid->wep_key_len[idx]);
1291 }
1292
1293
1294 static char * wpa_config_write_wep_key0(const struct parse_data *data,
1295                                         struct wpa_ssid *ssid)
1296 {
1297         return wpa_config_write_wep_key(ssid, 0);
1298 }
1299
1300
1301 static char * wpa_config_write_wep_key1(const struct parse_data *data,
1302                                         struct wpa_ssid *ssid)
1303 {
1304         return wpa_config_write_wep_key(ssid, 1);
1305 }
1306
1307
1308 static char * wpa_config_write_wep_key2(const struct parse_data *data,
1309                                         struct wpa_ssid *ssid)
1310 {
1311         return wpa_config_write_wep_key(ssid, 2);
1312 }
1313
1314
1315 static char * wpa_config_write_wep_key3(const struct parse_data *data,
1316                                         struct wpa_ssid *ssid)
1317 {
1318         return wpa_config_write_wep_key(ssid, 3);
1319 }
1320 #endif /* NO_CONFIG_WRITE */
1321
1322
1323 #ifdef CONFIG_P2P
1324
1325 static int wpa_config_parse_go_p2p_dev_addr(const struct parse_data *data,
1326                                             struct wpa_ssid *ssid, int line,
1327                                             const char *value)
1328 {
1329         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
1330             os_strcmp(value, "any") == 0) {
1331                 os_memset(ssid->go_p2p_dev_addr, 0, ETH_ALEN);
1332                 wpa_printf(MSG_MSGDUMP, "GO P2P Device Address any");
1333                 return 0;
1334         }
1335         if (hwaddr_aton(value, ssid->go_p2p_dev_addr)) {
1336                 wpa_printf(MSG_ERROR, "Line %d: Invalid GO P2P Device Address '%s'.",
1337                            line, value);
1338                 return -1;
1339         }
1340         ssid->bssid_set = 1;
1341         wpa_printf(MSG_MSGDUMP, "GO P2P Device Address " MACSTR,
1342                    MAC2STR(ssid->go_p2p_dev_addr));
1343         return 0;
1344 }
1345
1346
1347 #ifndef NO_CONFIG_WRITE
1348 static char * wpa_config_write_go_p2p_dev_addr(const struct parse_data *data,
1349                                                struct wpa_ssid *ssid)
1350 {
1351         char *value;
1352         int res;
1353
1354         if (is_zero_ether_addr(ssid->go_p2p_dev_addr))
1355                 return NULL;
1356
1357         value = os_malloc(20);
1358         if (value == NULL)
1359                 return NULL;
1360         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->go_p2p_dev_addr));
1361         if (res < 0 || res >= 20) {
1362                 os_free(value);
1363                 return NULL;
1364         }
1365         value[20 - 1] = '\0';
1366         return value;
1367 }
1368 #endif /* NO_CONFIG_WRITE */
1369
1370
1371 static int wpa_config_parse_p2p_client_list(const struct parse_data *data,
1372                                             struct wpa_ssid *ssid, int line,
1373                                             const char *value)
1374 {
1375         const char *pos;
1376         u8 *buf, *n, addr[ETH_ALEN];
1377         size_t count;
1378
1379         buf = NULL;
1380         count = 0;
1381
1382         pos = value;
1383         while (pos && *pos) {
1384                 while (*pos == ' ')
1385                         pos++;
1386
1387                 if (hwaddr_aton(pos, addr)) {
1388                         if (count == 0) {
1389                                 wpa_printf(MSG_ERROR, "Line %d: Invalid "
1390                                            "p2p_client_list address '%s'.",
1391                                            line, value);
1392                                 os_free(buf);
1393                                 return -1;
1394                         }
1395                         /* continue anyway since this could have been from a
1396                          * truncated configuration file line */
1397                         wpa_printf(MSG_INFO, "Line %d: Ignore likely "
1398                                    "truncated p2p_client_list address '%s'",
1399                                    line, pos);
1400                 } else {
1401                         n = os_realloc_array(buf, count + 1, ETH_ALEN);
1402                         if (n == NULL) {
1403                                 os_free(buf);
1404                                 return -1;
1405                         }
1406                         buf = n;
1407                         os_memmove(buf + ETH_ALEN, buf, count * ETH_ALEN);
1408                         os_memcpy(buf, addr, ETH_ALEN);
1409                         count++;
1410                         wpa_hexdump(MSG_MSGDUMP, "p2p_client_list",
1411                                     addr, ETH_ALEN);
1412                 }
1413
1414                 pos = os_strchr(pos, ' ');
1415         }
1416
1417         os_free(ssid->p2p_client_list);
1418         ssid->p2p_client_list = buf;
1419         ssid->num_p2p_clients = count;
1420
1421         return 0;
1422 }
1423
1424
1425 #ifndef NO_CONFIG_WRITE
1426 static char * wpa_config_write_p2p_client_list(const struct parse_data *data,
1427                                                struct wpa_ssid *ssid)
1428 {
1429         char *value, *end, *pos;
1430         int res;
1431         size_t i;
1432
1433         if (ssid->p2p_client_list == NULL || ssid->num_p2p_clients == 0)
1434                 return NULL;
1435
1436         value = os_malloc(20 * ssid->num_p2p_clients);
1437         if (value == NULL)
1438                 return NULL;
1439         pos = value;
1440         end = value + 20 * ssid->num_p2p_clients;
1441
1442         for (i = ssid->num_p2p_clients; i > 0; i--) {
1443                 res = os_snprintf(pos, end - pos, MACSTR " ",
1444                                   MAC2STR(ssid->p2p_client_list +
1445                                           (i - 1) * ETH_ALEN));
1446                 if (res < 0 || res >= end - pos) {
1447                         os_free(value);
1448                         return NULL;
1449                 }
1450                 pos += res;
1451         }
1452
1453         if (pos > value)
1454                 pos[-1] = '\0';
1455
1456         return value;
1457 }
1458 #endif /* NO_CONFIG_WRITE */
1459
1460
1461 static int wpa_config_parse_psk_list(const struct parse_data *data,
1462                                      struct wpa_ssid *ssid, int line,
1463                                      const char *value)
1464 {
1465         struct psk_list_entry *p;
1466         const char *pos;
1467
1468         p = os_zalloc(sizeof(*p));
1469         if (p == NULL)
1470                 return -1;
1471
1472         pos = value;
1473         if (os_strncmp(pos, "P2P-", 4) == 0) {
1474                 p->p2p = 1;
1475                 pos += 4;
1476         }
1477
1478         if (hwaddr_aton(pos, p->addr)) {
1479                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list address '%s'",
1480                            line, pos);
1481                 os_free(p);
1482                 return -1;
1483         }
1484         pos += 17;
1485         if (*pos != '-') {
1486                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list '%s'",
1487                            line, pos);
1488                 os_free(p);
1489                 return -1;
1490         }
1491         pos++;
1492
1493         if (hexstr2bin(pos, p->psk, PMK_LEN) || pos[PMK_LEN * 2] != '\0') {
1494                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list PSK '%s'",
1495                            line, pos);
1496                 os_free(p);
1497                 return -1;
1498         }
1499
1500         dl_list_add(&ssid->psk_list, &p->list);
1501
1502         return 0;
1503 }
1504
1505
1506 #ifndef NO_CONFIG_WRITE
1507 static char * wpa_config_write_psk_list(const struct parse_data *data,
1508                                         struct wpa_ssid *ssid)
1509 {
1510         return NULL;
1511 }
1512 #endif /* NO_CONFIG_WRITE */
1513
1514 #endif /* CONFIG_P2P */
1515
1516 /* Helper macros for network block parser */
1517
1518 #ifdef OFFSET
1519 #undef OFFSET
1520 #endif /* OFFSET */
1521 /* OFFSET: Get offset of a variable within the wpa_ssid structure */
1522 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
1523
1524 /* STR: Define a string variable for an ASCII string; f = field name */
1525 #ifdef NO_CONFIG_WRITE
1526 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
1527 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f)
1528 #else /* NO_CONFIG_WRITE */
1529 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
1530 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f)
1531 #endif /* NO_CONFIG_WRITE */
1532 #define STR(f) _STR(f), NULL, NULL, NULL, 0
1533 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0
1534 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
1535 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1
1536
1537 /* STR_LEN: Define a string variable with a separate variable for storing the
1538  * data length. Unlike STR(), this can be used to store arbitrary binary data
1539  * (i.e., even nul termination character). */
1540 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
1541 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len)
1542 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
1543 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0
1544 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
1545
1546 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
1547  * explicitly specified. */
1548 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
1549 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
1550 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
1551
1552 #ifdef NO_CONFIG_WRITE
1553 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
1554 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0
1555 #else /* NO_CONFIG_WRITE */
1556 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1557         OFFSET(f), (void *) 0
1558 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1559         OFFSET(eap.f), (void *) 0
1560 #endif /* NO_CONFIG_WRITE */
1561
1562 /* INT: Define an integer variable */
1563 #define INT(f) _INT(f), NULL, NULL, 0
1564 #define INTe(f) _INTe(f), NULL, NULL, 0
1565
1566 /* INT_RANGE: Define an integer variable with allowed value range */
1567 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
1568
1569 /* FUNC: Define a configuration variable that uses a custom function for
1570  * parsing and writing the value. */
1571 #ifdef NO_CONFIG_WRITE
1572 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
1573 #else /* NO_CONFIG_WRITE */
1574 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
1575         NULL, NULL, NULL, NULL
1576 #endif /* NO_CONFIG_WRITE */
1577 #define FUNC(f) _FUNC(f), 0
1578 #define FUNC_KEY(f) _FUNC(f), 1
1579
1580 /*
1581  * Table of network configuration variables. This table is used to parse each
1582  * network configuration variable, e.g., each line in wpa_supplicant.conf file
1583  * that is inside a network block.
1584  *
1585  * This table is generated using the helper macros defined above and with
1586  * generous help from the C pre-processor. The field name is stored as a string
1587  * into .name and for STR and INT types, the offset of the target buffer within
1588  * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
1589  * offset to the field containing the length of the configuration variable.
1590  * .param3 and .param4 can be used to mark the allowed range (length for STR
1591  * and value for INT).
1592  *
1593  * For each configuration line in wpa_supplicant.conf, the parser goes through
1594  * this table and select the entry that matches with the field name. The parser
1595  * function (.parser) is then called to parse the actual value of the field.
1596  *
1597  * This kind of mechanism makes it easy to add new configuration parameters,
1598  * since only one line needs to be added into this table and into the
1599  * struct wpa_ssid definition if the new variable is either a string or
1600  * integer. More complex types will need to use their own parser and writer
1601  * functions.
1602  */
1603 static const struct parse_data ssid_fields[] = {
1604         { STR_RANGE(ssid, 0, MAX_SSID_LEN) },
1605         { INT_RANGE(scan_ssid, 0, 1) },
1606         { FUNC(bssid) },
1607         { FUNC_KEY(psk) },
1608         { FUNC(proto) },
1609         { FUNC(key_mgmt) },
1610         { INT(bg_scan_period) },
1611         { FUNC(pairwise) },
1612         { FUNC(group) },
1613         { FUNC(auth_alg) },
1614         { FUNC(scan_freq) },
1615         { FUNC(freq_list) },
1616 #ifdef IEEE8021X_EAPOL
1617         { FUNC(eap) },
1618         { STR_LENe(identity) },
1619         { STR_LENe(anonymous_identity) },
1620         { FUNC_KEY(password) },
1621         { STRe(ca_cert) },
1622         { STRe(ca_path) },
1623         { STRe(client_cert) },
1624         { STRe(private_key) },
1625         { STR_KEYe(private_key_passwd) },
1626         { STRe(dh_file) },
1627         { STRe(subject_match) },
1628         { STRe(altsubject_match) },
1629         { STRe(domain_suffix_match) },
1630         { STRe(ca_cert2) },
1631         { STRe(ca_path2) },
1632         { STRe(client_cert2) },
1633         { STRe(private_key2) },
1634         { STR_KEYe(private_key2_passwd) },
1635         { STRe(dh_file2) },
1636         { STRe(subject_match2) },
1637         { STRe(altsubject_match2) },
1638         { STRe(domain_suffix_match2) },
1639         { STRe(phase1) },
1640         { STRe(phase2) },
1641         { STRe(pcsc) },
1642         { STR_KEYe(pin) },
1643         { STRe(engine_id) },
1644         { STRe(key_id) },
1645         { STRe(cert_id) },
1646         { STRe(ca_cert_id) },
1647         { STR_KEYe(pin2) },
1648         { STRe(engine2_id) },
1649         { STRe(key2_id) },
1650         { STRe(cert2_id) },
1651         { STRe(ca_cert2_id) },
1652         { INTe(engine) },
1653         { INTe(engine2) },
1654         { INT(eapol_flags) },
1655 #endif /* IEEE8021X_EAPOL */
1656         { FUNC_KEY(wep_key0) },
1657         { FUNC_KEY(wep_key1) },
1658         { FUNC_KEY(wep_key2) },
1659         { FUNC_KEY(wep_key3) },
1660         { INT(wep_tx_keyidx) },
1661         { INT(priority) },
1662 #ifdef IEEE8021X_EAPOL
1663         { INT(eap_workaround) },
1664         { STRe(pac_file) },
1665         { INTe(fragment_size) },
1666         { INTe(ocsp) },
1667 #endif /* IEEE8021X_EAPOL */
1668         { INT_RANGE(mode, 0, 4) },
1669         { INT_RANGE(proactive_key_caching, 0, 1) },
1670         { INT_RANGE(disabled, 0, 2) },
1671         { STR(id_str) },
1672 #ifdef CONFIG_IEEE80211W
1673         { INT_RANGE(ieee80211w, 0, 2) },
1674 #endif /* CONFIG_IEEE80211W */
1675         { INT_RANGE(peerkey, 0, 1) },
1676         { INT_RANGE(mixed_cell, 0, 1) },
1677         { INT_RANGE(frequency, 0, 65000) },
1678         { INT(wpa_ptk_rekey) },
1679         { STR(bgscan) },
1680         { INT_RANGE(ignore_broadcast_ssid, 0, 2) },
1681 #ifdef CONFIG_P2P
1682         { FUNC(go_p2p_dev_addr) },
1683         { FUNC(p2p_client_list) },
1684         { FUNC(psk_list) },
1685 #endif /* CONFIG_P2P */
1686 #ifdef CONFIG_HT_OVERRIDES
1687         { INT_RANGE(disable_ht, 0, 1) },
1688         { INT_RANGE(disable_ht40, -1, 1) },
1689         { INT_RANGE(disable_sgi, 0, 1) },
1690         { INT_RANGE(disable_max_amsdu, -1, 1) },
1691         { INT_RANGE(ampdu_factor, -1, 3) },
1692         { INT_RANGE(ampdu_density, -1, 7) },
1693         { STR(ht_mcs) },
1694 #endif /* CONFIG_HT_OVERRIDES */
1695 #ifdef CONFIG_VHT_OVERRIDES
1696         { INT_RANGE(disable_vht, 0, 1) },
1697         { INT(vht_capa) },
1698         { INT(vht_capa_mask) },
1699         { INT_RANGE(vht_rx_mcs_nss_1, -1, 3) },
1700         { INT_RANGE(vht_rx_mcs_nss_2, -1, 3) },
1701         { INT_RANGE(vht_rx_mcs_nss_3, -1, 3) },
1702         { INT_RANGE(vht_rx_mcs_nss_4, -1, 3) },
1703         { INT_RANGE(vht_rx_mcs_nss_5, -1, 3) },
1704         { INT_RANGE(vht_rx_mcs_nss_6, -1, 3) },
1705         { INT_RANGE(vht_rx_mcs_nss_7, -1, 3) },
1706         { INT_RANGE(vht_rx_mcs_nss_8, -1, 3) },
1707         { INT_RANGE(vht_tx_mcs_nss_1, -1, 3) },
1708         { INT_RANGE(vht_tx_mcs_nss_2, -1, 3) },
1709         { INT_RANGE(vht_tx_mcs_nss_3, -1, 3) },
1710         { INT_RANGE(vht_tx_mcs_nss_4, -1, 3) },
1711         { INT_RANGE(vht_tx_mcs_nss_5, -1, 3) },
1712         { INT_RANGE(vht_tx_mcs_nss_6, -1, 3) },
1713         { INT_RANGE(vht_tx_mcs_nss_7, -1, 3) },
1714         { INT_RANGE(vht_tx_mcs_nss_8, -1, 3) },
1715 #endif /* CONFIG_VHT_OVERRIDES */
1716         { INT(ap_max_inactivity) },
1717         { INT(dtim_period) },
1718         { INT(beacon_int) },
1719 };
1720
1721 #undef OFFSET
1722 #undef _STR
1723 #undef STR
1724 #undef STR_KEY
1725 #undef _STR_LEN
1726 #undef STR_LEN
1727 #undef STR_LEN_KEY
1728 #undef _STR_RANGE
1729 #undef STR_RANGE
1730 #undef STR_RANGE_KEY
1731 #undef _INT
1732 #undef INT
1733 #undef INT_RANGE
1734 #undef _FUNC
1735 #undef FUNC
1736 #undef FUNC_KEY
1737 #define NUM_SSID_FIELDS ARRAY_SIZE(ssid_fields)
1738
1739
1740 /**
1741  * wpa_config_add_prio_network - Add a network to priority lists
1742  * @config: Configuration data from wpa_config_read()
1743  * @ssid: Pointer to the network configuration to be added to the list
1744  * Returns: 0 on success, -1 on failure
1745  *
1746  * This function is used to add a network block to the priority list of
1747  * networks. This must be called for each network when reading in the full
1748  * configuration. In addition, this can be used indirectly when updating
1749  * priorities by calling wpa_config_update_prio_list().
1750  */
1751 int wpa_config_add_prio_network(struct wpa_config *config,
1752                                 struct wpa_ssid *ssid)
1753 {
1754         int prio;
1755         struct wpa_ssid *prev, **nlist;
1756
1757         /*
1758          * Add to an existing priority list if one is available for the
1759          * configured priority level for this network.
1760          */
1761         for (prio = 0; prio < config->num_prio; prio++) {
1762                 prev = config->pssid[prio];
1763                 if (prev->priority == ssid->priority) {
1764                         while (prev->pnext)
1765                                 prev = prev->pnext;
1766                         prev->pnext = ssid;
1767                         return 0;
1768                 }
1769         }
1770
1771         /* First network for this priority - add a new priority list */
1772         nlist = os_realloc_array(config->pssid, config->num_prio + 1,
1773                                  sizeof(struct wpa_ssid *));
1774         if (nlist == NULL)
1775                 return -1;
1776
1777         for (prio = 0; prio < config->num_prio; prio++) {
1778                 if (nlist[prio]->priority < ssid->priority) {
1779                         os_memmove(&nlist[prio + 1], &nlist[prio],
1780                                    (config->num_prio - prio) *
1781                                    sizeof(struct wpa_ssid *));
1782                         break;
1783                 }
1784         }
1785
1786         nlist[prio] = ssid;
1787         config->num_prio++;
1788         config->pssid = nlist;
1789
1790         return 0;
1791 }
1792
1793
1794 /**
1795  * wpa_config_update_prio_list - Update network priority list
1796  * @config: Configuration data from wpa_config_read()
1797  * Returns: 0 on success, -1 on failure
1798  *
1799  * This function is called to update the priority list of networks in the
1800  * configuration when a network is being added or removed. This is also called
1801  * if a priority for a network is changed.
1802  */
1803 int wpa_config_update_prio_list(struct wpa_config *config)
1804 {
1805         struct wpa_ssid *ssid;
1806         int ret = 0;
1807
1808         os_free(config->pssid);
1809         config->pssid = NULL;
1810         config->num_prio = 0;
1811
1812         ssid = config->ssid;
1813         while (ssid) {
1814                 ssid->pnext = NULL;
1815                 if (wpa_config_add_prio_network(config, ssid) < 0)
1816                         ret = -1;
1817                 ssid = ssid->next;
1818         }
1819
1820         return ret;
1821 }
1822
1823
1824 #ifdef IEEE8021X_EAPOL
1825 static void eap_peer_config_free(struct eap_peer_config *eap)
1826 {
1827         os_free(eap->eap_methods);
1828         os_free(eap->identity);
1829         os_free(eap->anonymous_identity);
1830         os_free(eap->password);
1831         os_free(eap->ca_cert);
1832         os_free(eap->ca_path);
1833         os_free(eap->client_cert);
1834         os_free(eap->private_key);
1835         os_free(eap->private_key_passwd);
1836         os_free(eap->dh_file);
1837         os_free(eap->subject_match);
1838         os_free(eap->altsubject_match);
1839         os_free(eap->domain_suffix_match);
1840         os_free(eap->ca_cert2);
1841         os_free(eap->ca_path2);
1842         os_free(eap->client_cert2);
1843         os_free(eap->private_key2);
1844         os_free(eap->private_key2_passwd);
1845         os_free(eap->dh_file2);
1846         os_free(eap->subject_match2);
1847         os_free(eap->altsubject_match2);
1848         os_free(eap->domain_suffix_match2);
1849         os_free(eap->phase1);
1850         os_free(eap->phase2);
1851         os_free(eap->pcsc);
1852         os_free(eap->pin);
1853         os_free(eap->engine_id);
1854         os_free(eap->key_id);
1855         os_free(eap->cert_id);
1856         os_free(eap->ca_cert_id);
1857         os_free(eap->key2_id);
1858         os_free(eap->cert2_id);
1859         os_free(eap->ca_cert2_id);
1860         os_free(eap->pin2);
1861         os_free(eap->engine2_id);
1862         os_free(eap->otp);
1863         os_free(eap->pending_req_otp);
1864         os_free(eap->pac_file);
1865         os_free(eap->new_password);
1866         os_free(eap->external_sim_resp);
1867 }
1868 #endif /* IEEE8021X_EAPOL */
1869
1870
1871 /**
1872  * wpa_config_free_ssid - Free network/ssid configuration data
1873  * @ssid: Configuration data for the network
1874  *
1875  * This function frees all resources allocated for the network configuration
1876  * data.
1877  */
1878 void wpa_config_free_ssid(struct wpa_ssid *ssid)
1879 {
1880         struct psk_list_entry *psk;
1881
1882         os_free(ssid->ssid);
1883         os_free(ssid->passphrase);
1884         os_free(ssid->ext_psk);
1885 #ifdef IEEE8021X_EAPOL
1886         eap_peer_config_free(&ssid->eap);
1887 #endif /* IEEE8021X_EAPOL */
1888         os_free(ssid->id_str);
1889         os_free(ssid->scan_freq);
1890         os_free(ssid->freq_list);
1891         os_free(ssid->bgscan);
1892         os_free(ssid->p2p_client_list);
1893 #ifdef CONFIG_HT_OVERRIDES
1894         os_free(ssid->ht_mcs);
1895 #endif /* CONFIG_HT_OVERRIDES */
1896         while ((psk = dl_list_first(&ssid->psk_list, struct psk_list_entry,
1897                                     list))) {
1898                 dl_list_del(&psk->list);
1899                 os_free(psk);
1900         }
1901         os_free(ssid);
1902 }
1903
1904
1905 void wpa_config_free_cred(struct wpa_cred *cred)
1906 {
1907         size_t i;
1908
1909         os_free(cred->realm);
1910         os_free(cred->username);
1911         os_free(cred->password);
1912         os_free(cred->ca_cert);
1913         os_free(cred->client_cert);
1914         os_free(cred->private_key);
1915         os_free(cred->private_key_passwd);
1916         os_free(cred->imsi);
1917         os_free(cred->milenage);
1918         for (i = 0; i < cred->num_domain; i++)
1919                 os_free(cred->domain[i]);
1920         os_free(cred->domain);
1921         os_free(cred->domain_suffix_match);
1922         os_free(cred->eap_method);
1923         os_free(cred->phase1);
1924         os_free(cred->phase2);
1925         os_free(cred->excluded_ssid);
1926         os_free(cred->roaming_partner);
1927         os_free(cred);
1928 }
1929
1930
1931 void wpa_config_flush_blobs(struct wpa_config *config)
1932 {
1933 #ifndef CONFIG_NO_CONFIG_BLOBS
1934         struct wpa_config_blob *blob, *prev;
1935
1936         blob = config->blobs;
1937         config->blobs = NULL;
1938         while (blob) {
1939                 prev = blob;
1940                 blob = blob->next;
1941                 wpa_config_free_blob(prev);
1942         }
1943 #endif /* CONFIG_NO_CONFIG_BLOBS */
1944 }
1945
1946
1947 /**
1948  * wpa_config_free - Free configuration data
1949  * @config: Configuration data from wpa_config_read()
1950  *
1951  * This function frees all resources allocated for the configuration data by
1952  * wpa_config_read().
1953  */
1954 void wpa_config_free(struct wpa_config *config)
1955 {
1956         struct wpa_ssid *ssid, *prev = NULL;
1957         struct wpa_cred *cred, *cprev;
1958
1959         ssid = config->ssid;
1960         while (ssid) {
1961                 prev = ssid;
1962                 ssid = ssid->next;
1963                 wpa_config_free_ssid(prev);
1964         }
1965
1966         cred = config->cred;
1967         while (cred) {
1968                 cprev = cred;
1969                 cred = cred->next;
1970                 wpa_config_free_cred(cprev);
1971         }
1972
1973         wpa_config_flush_blobs(config);
1974
1975         wpabuf_free(config->wps_vendor_ext_m1);
1976         os_free(config->ctrl_interface);
1977         os_free(config->ctrl_interface_group);
1978         os_free(config->opensc_engine_path);
1979         os_free(config->pkcs11_engine_path);
1980         os_free(config->pkcs11_module_path);
1981         os_free(config->pcsc_reader);
1982         os_free(config->pcsc_pin);
1983         os_free(config->driver_param);
1984         os_free(config->device_name);
1985         os_free(config->manufacturer);
1986         os_free(config->model_name);
1987         os_free(config->model_number);
1988         os_free(config->serial_number);
1989         os_free(config->config_methods);
1990         os_free(config->p2p_ssid_postfix);
1991         os_free(config->pssid);
1992         os_free(config->p2p_pref_chan);
1993         os_free(config->p2p_no_go_freq.range);
1994         os_free(config->autoscan);
1995         os_free(config->freq_list);
1996         wpabuf_free(config->wps_nfc_dh_pubkey);
1997         wpabuf_free(config->wps_nfc_dh_privkey);
1998         wpabuf_free(config->wps_nfc_dev_pw);
1999         os_free(config->ext_password_backend);
2000         os_free(config->sae_groups);
2001         wpabuf_free(config->ap_vendor_elements);
2002         os_free(config);
2003 }
2004
2005
2006 /**
2007  * wpa_config_foreach_network - Iterate over each configured network
2008  * @config: Configuration data from wpa_config_read()
2009  * @func: Callback function to process each network
2010  * @arg: Opaque argument to pass to callback function
2011  *
2012  * Iterate over the set of configured networks calling the specified
2013  * function for each item. We guard against callbacks removing the
2014  * supplied network.
2015  */
2016 void wpa_config_foreach_network(struct wpa_config *config,
2017                                 void (*func)(void *, struct wpa_ssid *),
2018                                 void *arg)
2019 {
2020         struct wpa_ssid *ssid, *next;
2021
2022         ssid = config->ssid;
2023         while (ssid) {
2024                 next = ssid->next;
2025                 func(arg, ssid);
2026                 ssid = next;
2027         }
2028 }
2029
2030
2031 /**
2032  * wpa_config_get_network - Get configured network based on id
2033  * @config: Configuration data from wpa_config_read()
2034  * @id: Unique network id to search for
2035  * Returns: Network configuration or %NULL if not found
2036  */
2037 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
2038 {
2039         struct wpa_ssid *ssid;
2040
2041         ssid = config->ssid;
2042         while (ssid) {
2043                 if (id == ssid->id)
2044                         break;
2045                 ssid = ssid->next;
2046         }
2047
2048         return ssid;
2049 }
2050
2051
2052 /**
2053  * wpa_config_add_network - Add a new network with empty configuration
2054  * @config: Configuration data from wpa_config_read()
2055  * Returns: The new network configuration or %NULL if operation failed
2056  */
2057 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
2058 {
2059         int id;
2060         struct wpa_ssid *ssid, *last = NULL;
2061
2062         id = -1;
2063         ssid = config->ssid;
2064         while (ssid) {
2065                 if (ssid->id > id)
2066                         id = ssid->id;
2067                 last = ssid;
2068                 ssid = ssid->next;
2069         }
2070         id++;
2071
2072         ssid = os_zalloc(sizeof(*ssid));
2073         if (ssid == NULL)
2074                 return NULL;
2075         ssid->id = id;
2076         dl_list_init(&ssid->psk_list);
2077         if (last)
2078                 last->next = ssid;
2079         else
2080                 config->ssid = ssid;
2081
2082         wpa_config_update_prio_list(config);
2083
2084         return ssid;
2085 }
2086
2087
2088 /**
2089  * wpa_config_remove_network - Remove a configured network based on id
2090  * @config: Configuration data from wpa_config_read()
2091  * @id: Unique network id to search for
2092  * Returns: 0 on success, or -1 if the network was not found
2093  */
2094 int wpa_config_remove_network(struct wpa_config *config, int id)
2095 {
2096         struct wpa_ssid *ssid, *prev = NULL;
2097
2098         ssid = config->ssid;
2099         while (ssid) {
2100                 if (id == ssid->id)
2101                         break;
2102                 prev = ssid;
2103                 ssid = ssid->next;
2104         }
2105
2106         if (ssid == NULL)
2107                 return -1;
2108
2109         if (prev)
2110                 prev->next = ssid->next;
2111         else
2112                 config->ssid = ssid->next;
2113
2114         wpa_config_update_prio_list(config);
2115         wpa_config_free_ssid(ssid);
2116         return 0;
2117 }
2118
2119
2120 /**
2121  * wpa_config_set_network_defaults - Set network default values
2122  * @ssid: Pointer to network configuration data
2123  */
2124 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
2125 {
2126         ssid->proto = DEFAULT_PROTO;
2127         ssid->pairwise_cipher = DEFAULT_PAIRWISE;
2128         ssid->group_cipher = DEFAULT_GROUP;
2129         ssid->key_mgmt = DEFAULT_KEY_MGMT;
2130         ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
2131 #ifdef IEEE8021X_EAPOL
2132         ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
2133         ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
2134         ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
2135 #endif /* IEEE8021X_EAPOL */
2136 #ifdef CONFIG_HT_OVERRIDES
2137         ssid->disable_ht = DEFAULT_DISABLE_HT;
2138         ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
2139         ssid->disable_sgi = DEFAULT_DISABLE_SGI;
2140         ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
2141         ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
2142         ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
2143 #endif /* CONFIG_HT_OVERRIDES */
2144 #ifdef CONFIG_VHT_OVERRIDES
2145         ssid->vht_rx_mcs_nss_1 = -1;
2146         ssid->vht_rx_mcs_nss_2 = -1;
2147         ssid->vht_rx_mcs_nss_3 = -1;
2148         ssid->vht_rx_mcs_nss_4 = -1;
2149         ssid->vht_rx_mcs_nss_5 = -1;
2150         ssid->vht_rx_mcs_nss_6 = -1;
2151         ssid->vht_rx_mcs_nss_7 = -1;
2152         ssid->vht_rx_mcs_nss_8 = -1;
2153         ssid->vht_tx_mcs_nss_1 = -1;
2154         ssid->vht_tx_mcs_nss_2 = -1;
2155         ssid->vht_tx_mcs_nss_3 = -1;
2156         ssid->vht_tx_mcs_nss_4 = -1;
2157         ssid->vht_tx_mcs_nss_5 = -1;
2158         ssid->vht_tx_mcs_nss_6 = -1;
2159         ssid->vht_tx_mcs_nss_7 = -1;
2160         ssid->vht_tx_mcs_nss_8 = -1;
2161 #endif /* CONFIG_VHT_OVERRIDES */
2162         ssid->proactive_key_caching = -1;
2163 #ifdef CONFIG_IEEE80211W
2164         ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
2165 #endif /* CONFIG_IEEE80211W */
2166 }
2167
2168
2169 /**
2170  * wpa_config_set - Set a variable in network configuration
2171  * @ssid: Pointer to network configuration data
2172  * @var: Variable name, e.g., "ssid"
2173  * @value: Variable value
2174  * @line: Line number in configuration file or 0 if not used
2175  * Returns: 0 on success, -1 on failure
2176  *
2177  * This function can be used to set network configuration variables based on
2178  * both the configuration file and management interface input. The value
2179  * parameter must be in the same format as the text-based configuration file is
2180  * using. For example, strings are using double quotation marks.
2181  */
2182 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
2183                    int line)
2184 {
2185         size_t i;
2186         int ret = 0;
2187
2188         if (ssid == NULL || var == NULL || value == NULL)
2189                 return -1;
2190
2191         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2192                 const struct parse_data *field = &ssid_fields[i];
2193                 if (os_strcmp(var, field->name) != 0)
2194                         continue;
2195
2196                 if (field->parser(field, ssid, line, value)) {
2197                         if (line) {
2198                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
2199                                            "parse %s '%s'.", line, var, value);
2200                         }
2201                         ret = -1;
2202                 }
2203                 break;
2204         }
2205         if (i == NUM_SSID_FIELDS) {
2206                 if (line) {
2207                         wpa_printf(MSG_ERROR, "Line %d: unknown network field "
2208                                    "'%s'.", line, var);
2209                 }
2210                 ret = -1;
2211         }
2212
2213         return ret;
2214 }
2215
2216
2217 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
2218                           const char *value)
2219 {
2220         size_t len;
2221         char *buf;
2222         int ret;
2223
2224         len = os_strlen(value);
2225         buf = os_malloc(len + 3);
2226         if (buf == NULL)
2227                 return -1;
2228         buf[0] = '"';
2229         os_memcpy(buf + 1, value, len);
2230         buf[len + 1] = '"';
2231         buf[len + 2] = '\0';
2232         ret = wpa_config_set(ssid, var, buf, 0);
2233         os_free(buf);
2234         return ret;
2235 }
2236
2237
2238 /**
2239  * wpa_config_get_all - Get all options from network configuration
2240  * @ssid: Pointer to network configuration data
2241  * @get_keys: Determines if keys/passwords will be included in returned list
2242  *      (if they may be exported)
2243  * Returns: %NULL terminated list of all set keys and their values in the form
2244  * of [key1, val1, key2, val2, ... , NULL]
2245  *
2246  * This function can be used to get list of all configured network properties.
2247  * The caller is responsible for freeing the returned list and all its
2248  * elements.
2249  */
2250 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
2251 {
2252         const struct parse_data *field;
2253         char *key, *value;
2254         size_t i;
2255         char **props;
2256         int fields_num;
2257
2258         get_keys = get_keys && ssid->export_keys;
2259
2260         props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
2261         if (!props)
2262                 return NULL;
2263
2264         fields_num = 0;
2265         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2266                 field = &ssid_fields[i];
2267                 if (field->key_data && !get_keys)
2268                         continue;
2269                 value = field->writer(field, ssid);
2270                 if (value == NULL)
2271                         continue;
2272                 if (os_strlen(value) == 0) {
2273                         os_free(value);
2274                         continue;
2275                 }
2276
2277                 key = os_strdup(field->name);
2278                 if (key == NULL) {
2279                         os_free(value);
2280                         goto err;
2281                 }
2282
2283                 props[fields_num * 2] = key;
2284                 props[fields_num * 2 + 1] = value;
2285
2286                 fields_num++;
2287         }
2288
2289         return props;
2290
2291 err:
2292         value = *props;
2293         while (value)
2294                 os_free(value++);
2295         os_free(props);
2296         return NULL;
2297 }
2298
2299
2300 #ifndef NO_CONFIG_WRITE
2301 /**
2302  * wpa_config_get - Get a variable in network configuration
2303  * @ssid: Pointer to network configuration data
2304  * @var: Variable name, e.g., "ssid"
2305  * Returns: Value of the variable or %NULL on failure
2306  *
2307  * This function can be used to get network configuration variables. The
2308  * returned value is a copy of the configuration variable in text format, i.e,.
2309  * the same format that the text-based configuration file and wpa_config_set()
2310  * are using for the value. The caller is responsible for freeing the returned
2311  * value.
2312  */
2313 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
2314 {
2315         size_t i;
2316
2317         if (ssid == NULL || var == NULL)
2318                 return NULL;
2319
2320         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2321                 const struct parse_data *field = &ssid_fields[i];
2322                 if (os_strcmp(var, field->name) == 0)
2323                         return field->writer(field, ssid);
2324         }
2325
2326         return NULL;
2327 }
2328
2329
2330 /**
2331  * wpa_config_get_no_key - Get a variable in network configuration (no keys)
2332  * @ssid: Pointer to network configuration data
2333  * @var: Variable name, e.g., "ssid"
2334  * Returns: Value of the variable or %NULL on failure
2335  *
2336  * This function can be used to get network configuration variable like
2337  * wpa_config_get(). The only difference is that this functions does not expose
2338  * key/password material from the configuration. In case a key/password field
2339  * is requested, the returned value is an empty string or %NULL if the variable
2340  * is not set or "*" if the variable is set (regardless of its value). The
2341  * returned value is a copy of the configuration variable in text format, i.e,.
2342  * the same format that the text-based configuration file and wpa_config_set()
2343  * are using for the value. The caller is responsible for freeing the returned
2344  * value.
2345  */
2346 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
2347 {
2348         size_t i;
2349
2350         if (ssid == NULL || var == NULL)
2351                 return NULL;
2352
2353         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2354                 const struct parse_data *field = &ssid_fields[i];
2355                 if (os_strcmp(var, field->name) == 0) {
2356                         char *res = field->writer(field, ssid);
2357                         if (field->key_data) {
2358                                 if (res && res[0]) {
2359                                         wpa_printf(MSG_DEBUG, "Do not allow "
2360                                                    "key_data field to be "
2361                                                    "exposed");
2362                                         os_free(res);
2363                                         return os_strdup("*");
2364                                 }
2365
2366                                 os_free(res);
2367                                 return NULL;
2368                         }
2369                         return res;
2370                 }
2371         }
2372
2373         return NULL;
2374 }
2375 #endif /* NO_CONFIG_WRITE */
2376
2377
2378 /**
2379  * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
2380  * @ssid: Pointer to network configuration data
2381  *
2382  * This function must be called to update WPA PSK when either SSID or the
2383  * passphrase has changed for the network configuration.
2384  */
2385 void wpa_config_update_psk(struct wpa_ssid *ssid)
2386 {
2387 #ifndef CONFIG_NO_PBKDF2
2388         pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
2389                     ssid->psk, PMK_LEN);
2390         wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
2391                         ssid->psk, PMK_LEN);
2392         ssid->psk_set = 1;
2393 #endif /* CONFIG_NO_PBKDF2 */
2394 }
2395
2396
2397 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
2398                         const char *value, int line)
2399 {
2400         char *val;
2401         size_t len;
2402
2403         if (os_strcmp(var, "temporary") == 0) {
2404                 cred->temporary = atoi(value);
2405                 return 0;
2406         }
2407
2408         if (os_strcmp(var, "priority") == 0) {
2409                 cred->priority = atoi(value);
2410                 return 0;
2411         }
2412
2413         if (os_strcmp(var, "pcsc") == 0) {
2414                 cred->pcsc = atoi(value);
2415                 return 0;
2416         }
2417
2418         if (os_strcmp(var, "eap") == 0) {
2419                 struct eap_method_type method;
2420                 method.method = eap_peer_get_type(value, &method.vendor);
2421                 if (method.vendor == EAP_VENDOR_IETF &&
2422                     method.method == EAP_TYPE_NONE) {
2423                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
2424                                    "for a credential", line, value);
2425                         return -1;
2426                 }
2427                 os_free(cred->eap_method);
2428                 cred->eap_method = os_malloc(sizeof(*cred->eap_method));
2429                 if (cred->eap_method == NULL)
2430                         return -1;
2431                 os_memcpy(cred->eap_method, &method, sizeof(method));
2432                 return 0;
2433         }
2434
2435         if (os_strcmp(var, "password") == 0 &&
2436             os_strncmp(value, "ext:", 4) == 0) {
2437                 os_free(cred->password);
2438                 cred->password = os_strdup(value);
2439                 cred->ext_password = 1;
2440                 return 0;
2441         }
2442
2443         if (os_strcmp(var, "update_identifier") == 0) {
2444                 cred->update_identifier = atoi(value);
2445                 return 0;
2446         }
2447
2448         val = wpa_config_parse_string(value, &len);
2449         if (val == NULL) {
2450                 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
2451                            "value '%s'.", line, var, value);
2452                 return -1;
2453         }
2454
2455         if (os_strcmp(var, "realm") == 0) {
2456                 os_free(cred->realm);
2457                 cred->realm = val;
2458                 return 0;
2459         }
2460
2461         if (os_strcmp(var, "username") == 0) {
2462                 os_free(cred->username);
2463                 cred->username = val;
2464                 return 0;
2465         }
2466
2467         if (os_strcmp(var, "password") == 0) {
2468                 os_free(cred->password);
2469                 cred->password = val;
2470                 cred->ext_password = 0;
2471                 return 0;
2472         }
2473
2474         if (os_strcmp(var, "ca_cert") == 0) {
2475                 os_free(cred->ca_cert);
2476                 cred->ca_cert = val;
2477                 return 0;
2478         }
2479
2480         if (os_strcmp(var, "client_cert") == 0) {
2481                 os_free(cred->client_cert);
2482                 cred->client_cert = val;
2483                 return 0;
2484         }
2485
2486         if (os_strcmp(var, "private_key") == 0) {
2487                 os_free(cred->private_key);
2488                 cred->private_key = val;
2489                 return 0;
2490         }
2491
2492         if (os_strcmp(var, "private_key_passwd") == 0) {
2493                 os_free(cred->private_key_passwd);
2494                 cred->private_key_passwd = val;
2495                 return 0;
2496         }
2497
2498         if (os_strcmp(var, "imsi") == 0) {
2499                 os_free(cred->imsi);
2500                 cred->imsi = val;
2501                 return 0;
2502         }
2503
2504         if (os_strcmp(var, "milenage") == 0) {
2505                 os_free(cred->milenage);
2506                 cred->milenage = val;
2507                 return 0;
2508         }
2509
2510         if (os_strcmp(var, "domain_suffix_match") == 0) {
2511                 os_free(cred->domain_suffix_match);
2512                 cred->domain_suffix_match = val;
2513                 return 0;
2514         }
2515
2516         if (os_strcmp(var, "domain") == 0) {
2517                 char **new_domain;
2518                 new_domain = os_realloc_array(cred->domain,
2519                                               cred->num_domain + 1,
2520                                               sizeof(char *));
2521                 if (new_domain == NULL) {
2522                         os_free(val);
2523                         return -1;
2524                 }
2525                 new_domain[cred->num_domain++] = val;
2526                 cred->domain = new_domain;
2527                 return 0;
2528         }
2529
2530         if (os_strcmp(var, "phase1") == 0) {
2531                 os_free(cred->phase1);
2532                 cred->phase1 = val;
2533                 return 0;
2534         }
2535
2536         if (os_strcmp(var, "phase2") == 0) {
2537                 os_free(cred->phase2);
2538                 cred->phase2 = val;
2539                 return 0;
2540         }
2541
2542         if (os_strcmp(var, "roaming_consortium") == 0) {
2543                 if (len < 3 || len > sizeof(cred->roaming_consortium)) {
2544                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2545                                    "roaming_consortium length %d (3..15 "
2546                                    "expected)", line, (int) len);
2547                         os_free(val);
2548                         return -1;
2549                 }
2550                 os_memcpy(cred->roaming_consortium, val, len);
2551                 cred->roaming_consortium_len = len;
2552                 os_free(val);
2553                 return 0;
2554         }
2555
2556         if (os_strcmp(var, "required_roaming_consortium") == 0) {
2557                 if (len < 3 || len > sizeof(cred->required_roaming_consortium))
2558                 {
2559                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2560                                    "required_roaming_consortium length %d "
2561                                    "(3..15 expected)", line, (int) len);
2562                         os_free(val);
2563                         return -1;
2564                 }
2565                 os_memcpy(cred->required_roaming_consortium, val, len);
2566                 cred->required_roaming_consortium_len = len;
2567                 os_free(val);
2568                 return 0;
2569         }
2570
2571         if (os_strcmp(var, "excluded_ssid") == 0) {
2572                 struct excluded_ssid *e;
2573
2574                 if (len > MAX_SSID_LEN) {
2575                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2576                                    "excluded_ssid length %d", line, (int) len);
2577                         os_free(val);
2578                         return -1;
2579                 }
2580
2581                 e = os_realloc_array(cred->excluded_ssid,
2582                                      cred->num_excluded_ssid + 1,
2583                                      sizeof(struct excluded_ssid));
2584                 if (e == NULL) {
2585                         os_free(val);
2586                         return -1;
2587                 }
2588                 cred->excluded_ssid = e;
2589
2590                 e = &cred->excluded_ssid[cred->num_excluded_ssid++];
2591                 os_memcpy(e->ssid, val, len);
2592                 e->ssid_len = len;
2593
2594                 os_free(val);
2595
2596                 return 0;
2597         }
2598
2599         if (os_strcmp(var, "roaming_partner") == 0) {
2600                 struct roaming_partner *p;
2601                 char *pos;
2602
2603                 p = os_realloc_array(cred->roaming_partner,
2604                                      cred->num_roaming_partner + 1,
2605                                      sizeof(struct roaming_partner));
2606                 if (p == NULL) {
2607                         os_free(val);
2608                         return -1;
2609                 }
2610                 cred->roaming_partner = p;
2611
2612                 p = &cred->roaming_partner[cred->num_roaming_partner];
2613
2614                 pos = os_strchr(val, ',');
2615                 if (pos == NULL) {
2616                         os_free(val);
2617                         return -1;
2618                 }
2619                 *pos++ = '\0';
2620                 if (pos - val - 1 >= (int) sizeof(p->fqdn)) {
2621                         os_free(val);
2622                         return -1;
2623                 }
2624                 os_memcpy(p->fqdn, val, pos - val);
2625
2626                 p->exact_match = atoi(pos);
2627
2628                 pos = os_strchr(pos, ',');
2629                 if (pos == NULL) {
2630                         os_free(val);
2631                         return -1;
2632                 }
2633                 *pos++ = '\0';
2634
2635                 p->priority = atoi(pos);
2636
2637                 pos = os_strchr(pos, ',');
2638                 if (pos == NULL) {
2639                         os_free(val);
2640                         return -1;
2641                 }
2642                 *pos++ = '\0';
2643
2644                 if (os_strlen(pos) >= sizeof(p->country)) {
2645                         os_free(val);
2646                         return -1;
2647                 }
2648                 os_memcpy(p->country, pos, os_strlen(pos) + 1);
2649
2650                 cred->num_roaming_partner++;
2651                 os_free(val);
2652
2653                 return 0;
2654         }
2655
2656         if (line) {
2657                 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
2658                            line, var);
2659         }
2660
2661         os_free(val);
2662
2663         return -1;
2664 }
2665
2666
2667 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
2668 {
2669         struct wpa_cred *cred;
2670
2671         cred = config->cred;
2672         while (cred) {
2673                 if (id == cred->id)
2674                         break;
2675                 cred = cred->next;
2676         }
2677
2678         return cred;
2679 }
2680
2681
2682 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
2683 {
2684         int id;
2685         struct wpa_cred *cred, *last = NULL;
2686
2687         id = -1;
2688         cred = config->cred;
2689         while (cred) {
2690                 if (cred->id > id)
2691                         id = cred->id;
2692                 last = cred;
2693                 cred = cred->next;
2694         }
2695         id++;
2696
2697         cred = os_zalloc(sizeof(*cred));
2698         if (cred == NULL)
2699                 return NULL;
2700         cred->id = id;
2701         if (last)
2702                 last->next = cred;
2703         else
2704                 config->cred = cred;
2705
2706         return cred;
2707 }
2708
2709
2710 int wpa_config_remove_cred(struct wpa_config *config, int id)
2711 {
2712         struct wpa_cred *cred, *prev = NULL;
2713
2714         cred = config->cred;
2715         while (cred) {
2716                 if (id == cred->id)
2717                         break;
2718                 prev = cred;
2719                 cred = cred->next;
2720         }
2721
2722         if (cred == NULL)
2723                 return -1;
2724
2725         if (prev)
2726                 prev->next = cred->next;
2727         else
2728                 config->cred = cred->next;
2729
2730         wpa_config_free_cred(cred);
2731         return 0;
2732 }
2733
2734
2735 #ifndef CONFIG_NO_CONFIG_BLOBS
2736 /**
2737  * wpa_config_get_blob - Get a named configuration blob
2738  * @config: Configuration data from wpa_config_read()
2739  * @name: Name of the blob
2740  * Returns: Pointer to blob data or %NULL if not found
2741  */
2742 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
2743                                                    const char *name)
2744 {
2745         struct wpa_config_blob *blob = config->blobs;
2746
2747         while (blob) {
2748                 if (os_strcmp(blob->name, name) == 0)
2749                         return blob;
2750                 blob = blob->next;
2751         }
2752         return NULL;
2753 }
2754
2755
2756 /**
2757  * wpa_config_set_blob - Set or add a named configuration blob
2758  * @config: Configuration data from wpa_config_read()
2759  * @blob: New value for the blob
2760  *
2761  * Adds a new configuration blob or replaces the current value of an existing
2762  * blob.
2763  */
2764 void wpa_config_set_blob(struct wpa_config *config,
2765                          struct wpa_config_blob *blob)
2766 {
2767         wpa_config_remove_blob(config, blob->name);
2768         blob->next = config->blobs;
2769         config->blobs = blob;
2770 }
2771
2772
2773 /**
2774  * wpa_config_free_blob - Free blob data
2775  * @blob: Pointer to blob to be freed
2776  */
2777 void wpa_config_free_blob(struct wpa_config_blob *blob)
2778 {
2779         if (blob) {
2780                 os_free(blob->name);
2781                 os_free(blob->data);
2782                 os_free(blob);
2783         }
2784 }
2785
2786
2787 /**
2788  * wpa_config_remove_blob - Remove a named configuration blob
2789  * @config: Configuration data from wpa_config_read()
2790  * @name: Name of the blob to remove
2791  * Returns: 0 if blob was removed or -1 if blob was not found
2792  */
2793 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
2794 {
2795         struct wpa_config_blob *pos = config->blobs, *prev = NULL;
2796
2797         while (pos) {
2798                 if (os_strcmp(pos->name, name) == 0) {
2799                         if (prev)
2800                                 prev->next = pos->next;
2801                         else
2802                                 config->blobs = pos->next;
2803                         wpa_config_free_blob(pos);
2804                         return 0;
2805                 }
2806                 prev = pos;
2807                 pos = pos->next;
2808         }
2809
2810         return -1;
2811 }
2812 #endif /* CONFIG_NO_CONFIG_BLOBS */
2813
2814
2815 /**
2816  * wpa_config_alloc_empty - Allocate an empty configuration
2817  * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
2818  * socket
2819  * @driver_param: Driver parameters
2820  * Returns: Pointer to allocated configuration data or %NULL on failure
2821  */
2822 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
2823                                            const char *driver_param)
2824 {
2825         struct wpa_config *config;
2826         const int aCWmin = 4, aCWmax = 10;
2827         const struct hostapd_wmm_ac_params ac_bk =
2828                 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
2829         const struct hostapd_wmm_ac_params ac_be =
2830                 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
2831         const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
2832                 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
2833         const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
2834                 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
2835
2836         config = os_zalloc(sizeof(*config));
2837         if (config == NULL)
2838                 return NULL;
2839         config->eapol_version = DEFAULT_EAPOL_VERSION;
2840         config->ap_scan = DEFAULT_AP_SCAN;
2841         config->fast_reauth = DEFAULT_FAST_REAUTH;
2842         config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
2843         config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
2844         config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
2845         config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
2846         config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
2847         config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
2848         config->max_num_sta = DEFAULT_MAX_NUM_STA;
2849         config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
2850         config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
2851         config->wmm_ac_params[0] = ac_be;
2852         config->wmm_ac_params[1] = ac_bk;
2853         config->wmm_ac_params[2] = ac_vi;
2854         config->wmm_ac_params[3] = ac_vo;
2855
2856         if (ctrl_interface)
2857                 config->ctrl_interface = os_strdup(ctrl_interface);
2858         if (driver_param)
2859                 config->driver_param = os_strdup(driver_param);
2860
2861         return config;
2862 }
2863
2864
2865 #ifndef CONFIG_NO_STDOUT_DEBUG
2866 /**
2867  * wpa_config_debug_dump_networks - Debug dump of configured networks
2868  * @config: Configuration data from wpa_config_read()
2869  */
2870 void wpa_config_debug_dump_networks(struct wpa_config *config)
2871 {
2872         int prio;
2873         struct wpa_ssid *ssid;
2874
2875         for (prio = 0; prio < config->num_prio; prio++) {
2876                 ssid = config->pssid[prio];
2877                 wpa_printf(MSG_DEBUG, "Priority group %d",
2878                            ssid->priority);
2879                 while (ssid) {
2880                         wpa_printf(MSG_DEBUG, "   id=%d ssid='%s'",
2881                                    ssid->id,
2882                                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2883                         ssid = ssid->pnext;
2884                 }
2885         }
2886 }
2887 #endif /* CONFIG_NO_STDOUT_DEBUG */
2888
2889
2890 struct global_parse_data {
2891         char *name;
2892         int (*parser)(const struct global_parse_data *data,
2893                       struct wpa_config *config, int line, const char *value);
2894         void *param1, *param2, *param3;
2895         unsigned int changed_flag;
2896 };
2897
2898
2899 static int wpa_global_config_parse_int(const struct global_parse_data *data,
2900                                        struct wpa_config *config, int line,
2901                                        const char *pos)
2902 {
2903         int val, *dst;
2904         char *end;
2905
2906         dst = (int *) (((u8 *) config) + (long) data->param1);
2907         val = strtol(pos, &end, 0);
2908         if (*end) {
2909                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
2910                            line, pos);
2911                 return -1;
2912         }
2913         *dst = val;
2914
2915         wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
2916
2917         if (data->param2 && *dst < (long) data->param2) {
2918                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
2919                            "min_value=%ld)", line, data->name, *dst,
2920                            (long) data->param2);
2921                 *dst = (long) data->param2;
2922                 return -1;
2923         }
2924
2925         if (data->param3 && *dst > (long) data->param3) {
2926                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
2927                            "max_value=%ld)", line, data->name, *dst,
2928                            (long) data->param3);
2929                 *dst = (long) data->param3;
2930                 return -1;
2931         }
2932
2933         return 0;
2934 }
2935
2936
2937 static int wpa_global_config_parse_str(const struct global_parse_data *data,
2938                                        struct wpa_config *config, int line,
2939                                        const char *pos)
2940 {
2941         size_t len;
2942         char **dst, *tmp;
2943
2944         len = os_strlen(pos);
2945         if (data->param2 && len < (size_t) data->param2) {
2946                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
2947                            "min_len=%ld)", line, data->name,
2948                            (unsigned long) len, (long) data->param2);
2949                 return -1;
2950         }
2951
2952         if (data->param3 && len > (size_t) data->param3) {
2953                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
2954                            "max_len=%ld)", line, data->name,
2955                            (unsigned long) len, (long) data->param3);
2956                 return -1;
2957         }
2958
2959         tmp = os_strdup(pos);
2960         if (tmp == NULL)
2961                 return -1;
2962
2963         dst = (char **) (((u8 *) config) + (long) data->param1);
2964         os_free(*dst);
2965         *dst = tmp;
2966         wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
2967
2968         return 0;
2969 }
2970
2971
2972 static int wpa_config_process_bgscan(const struct global_parse_data *data,
2973                                      struct wpa_config *config, int line,
2974                                      const char *pos)
2975 {
2976         size_t len;
2977         char *tmp;
2978         int res;
2979
2980         tmp = wpa_config_parse_string(pos, &len);
2981         if (tmp == NULL) {
2982                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s",
2983                            line, data->name);
2984                 return -1;
2985         }
2986
2987         res = wpa_global_config_parse_str(data, config, line, tmp);
2988         os_free(tmp);
2989         return res;
2990 }
2991
2992
2993 static int wpa_global_config_parse_bin(const struct global_parse_data *data,
2994                                        struct wpa_config *config, int line,
2995                                        const char *pos)
2996 {
2997         size_t len;
2998         struct wpabuf **dst, *tmp;
2999
3000         len = os_strlen(pos);
3001         if (len & 0x01)
3002                 return -1;
3003
3004         tmp = wpabuf_alloc(len / 2);
3005         if (tmp == NULL)
3006                 return -1;
3007
3008         if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) {
3009                 wpabuf_free(tmp);
3010                 return -1;
3011         }
3012
3013         dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
3014         wpabuf_free(*dst);
3015         *dst = tmp;
3016         wpa_printf(MSG_DEBUG, "%s", data->name);
3017
3018         return 0;
3019 }
3020
3021
3022 static int wpa_config_process_freq_list(const struct global_parse_data *data,
3023                                         struct wpa_config *config, int line,
3024                                         const char *value)
3025 {
3026         int *freqs;
3027
3028         freqs = wpa_config_parse_int_array(value);
3029         if (freqs == NULL)
3030                 return -1;
3031         if (freqs[0] == 0) {
3032                 os_free(freqs);
3033                 freqs = NULL;
3034         }
3035         os_free(config->freq_list);
3036         config->freq_list = freqs;
3037         return 0;
3038 }
3039
3040
3041 #ifdef CONFIG_P2P
3042 static int wpa_global_config_parse_ipv4(const struct global_parse_data *data,
3043                                         struct wpa_config *config, int line,
3044                                         const char *pos)
3045 {
3046         u32 *dst;
3047         struct hostapd_ip_addr addr;
3048
3049         if (hostapd_parse_ip_addr(pos, &addr) < 0)
3050                 return -1;
3051         if (addr.af != AF_INET)
3052                 return -1;
3053
3054         dst = (u32 *) (((u8 *) config) + (long) data->param1);
3055         os_memcpy(dst, &addr.u.v4.s_addr, 4);
3056         wpa_printf(MSG_DEBUG, "%s = 0x%x", data->name,
3057                    WPA_GET_BE32((u8 *) dst));
3058
3059         return 0;
3060 }
3061 #endif /* CONFIG_P2P */
3062
3063
3064 static int wpa_config_process_country(const struct global_parse_data *data,
3065                                       struct wpa_config *config, int line,
3066                                       const char *pos)
3067 {
3068         if (!pos[0] || !pos[1]) {
3069                 wpa_printf(MSG_DEBUG, "Invalid country set");
3070                 return -1;
3071         }
3072         config->country[0] = pos[0];
3073         config->country[1] = pos[1];
3074         wpa_printf(MSG_DEBUG, "country='%c%c'",
3075                    config->country[0], config->country[1]);
3076         return 0;
3077 }
3078
3079
3080 static int wpa_config_process_load_dynamic_eap(
3081         const struct global_parse_data *data, struct wpa_config *config,
3082         int line, const char *so)
3083 {
3084         int ret;
3085         wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
3086         ret = eap_peer_method_load(so);
3087         if (ret == -2) {
3088                 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
3089                            "reloading.");
3090         } else if (ret) {
3091                 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
3092                            "method '%s'.", line, so);
3093                 return -1;
3094         }
3095
3096         return 0;
3097 }
3098
3099
3100 #ifdef CONFIG_WPS
3101
3102 static int wpa_config_process_uuid(const struct global_parse_data *data,
3103                                    struct wpa_config *config, int line,
3104                                    const char *pos)
3105 {
3106         char buf[40];
3107         if (uuid_str2bin(pos, config->uuid)) {
3108                 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
3109                 return -1;
3110         }
3111         uuid_bin2str(config->uuid, buf, sizeof(buf));
3112         wpa_printf(MSG_DEBUG, "uuid=%s", buf);
3113         return 0;
3114 }
3115
3116
3117 static int wpa_config_process_device_type(
3118         const struct global_parse_data *data,
3119         struct wpa_config *config, int line, const char *pos)
3120 {
3121         return wps_dev_type_str2bin(pos, config->device_type);
3122 }
3123
3124
3125 static int wpa_config_process_os_version(const struct global_parse_data *data,
3126                                          struct wpa_config *config, int line,
3127                                          const char *pos)
3128 {
3129         if (hexstr2bin(pos, config->os_version, 4)) {
3130                 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
3131                 return -1;
3132         }
3133         wpa_printf(MSG_DEBUG, "os_version=%08x",
3134                    WPA_GET_BE32(config->os_version));
3135         return 0;
3136 }
3137
3138
3139 static int wpa_config_process_wps_vendor_ext_m1(
3140         const struct global_parse_data *data,
3141         struct wpa_config *config, int line, const char *pos)
3142 {
3143         struct wpabuf *tmp;
3144         int len = os_strlen(pos) / 2;
3145         u8 *p;
3146
3147         if (!len) {
3148                 wpa_printf(MSG_ERROR, "Line %d: "
3149                            "invalid wps_vendor_ext_m1", line);
3150                 return -1;
3151         }
3152
3153         tmp = wpabuf_alloc(len);
3154         if (tmp) {
3155                 p = wpabuf_put(tmp, len);
3156
3157                 if (hexstr2bin(pos, p, len)) {
3158                         wpa_printf(MSG_ERROR, "Line %d: "
3159                                    "invalid wps_vendor_ext_m1", line);
3160                         wpabuf_free(tmp);
3161                         return -1;
3162                 }
3163
3164                 wpabuf_free(config->wps_vendor_ext_m1);
3165                 config->wps_vendor_ext_m1 = tmp;
3166         } else {
3167                 wpa_printf(MSG_ERROR, "Can not allocate "
3168                            "memory for wps_vendor_ext_m1");
3169                 return -1;
3170         }
3171
3172         return 0;
3173 }
3174
3175 #endif /* CONFIG_WPS */
3176
3177 #ifdef CONFIG_P2P
3178 static int wpa_config_process_sec_device_type(
3179         const struct global_parse_data *data,
3180         struct wpa_config *config, int line, const char *pos)
3181 {
3182         int idx;
3183
3184         if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
3185                 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
3186                            "items", line);
3187                 return -1;
3188         }
3189
3190         idx = config->num_sec_device_types;
3191
3192         if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
3193                 return -1;
3194
3195         config->num_sec_device_types++;
3196         return 0;
3197 }
3198
3199
3200 static int wpa_config_process_p2p_pref_chan(
3201         const struct global_parse_data *data,
3202         struct wpa_config *config, int line, const char *pos)
3203 {
3204         struct p2p_channel *pref = NULL, *n;
3205         unsigned int num = 0;
3206         const char *pos2;
3207         u8 op_class, chan;
3208
3209         /* format: class:chan,class:chan,... */
3210
3211         while (*pos) {
3212                 op_class = atoi(pos);
3213                 pos2 = os_strchr(pos, ':');
3214                 if (pos2 == NULL)
3215                         goto fail;
3216                 pos2++;
3217                 chan = atoi(pos2);
3218
3219                 n = os_realloc_array(pref, num + 1,
3220                                      sizeof(struct p2p_channel));
3221                 if (n == NULL)
3222                         goto fail;
3223                 pref = n;
3224                 pref[num].op_class = op_class;
3225                 pref[num].chan = chan;
3226                 num++;
3227
3228                 pos = os_strchr(pos2, ',');
3229                 if (pos == NULL)
3230                         break;
3231                 pos++;
3232         }
3233
3234         os_free(config->p2p_pref_chan);
3235         config->p2p_pref_chan = pref;
3236         config->num_p2p_pref_chan = num;
3237         wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
3238                     (u8 *) config->p2p_pref_chan,
3239                     config->num_p2p_pref_chan * sizeof(struct p2p_channel));
3240
3241         return 0;
3242
3243 fail:
3244         os_free(pref);
3245         wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
3246         return -1;
3247 }
3248
3249
3250 static int wpa_config_process_p2p_no_go_freq(
3251         const struct global_parse_data *data,
3252         struct wpa_config *config, int line, const char *pos)
3253 {
3254         int ret;
3255
3256         ret = freq_range_list_parse(&config->p2p_no_go_freq, pos);
3257         if (ret < 0) {
3258                 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_no_go_freq", line);
3259                 return -1;
3260         }
3261
3262         wpa_printf(MSG_DEBUG, "P2P: p2p_no_go_freq with %u items",
3263                    config->p2p_no_go_freq.num);
3264
3265         return 0;
3266 }
3267
3268 #endif /* CONFIG_P2P */
3269
3270
3271 static int wpa_config_process_hessid(
3272         const struct global_parse_data *data,
3273         struct wpa_config *config, int line, const char *pos)
3274 {
3275         if (hwaddr_aton2(pos, config->hessid) < 0) {
3276                 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
3277                            line, pos);
3278                 return -1;
3279         }
3280
3281         return 0;
3282 }
3283
3284
3285 static int wpa_config_process_sae_groups(
3286         const struct global_parse_data *data,
3287         struct wpa_config *config, int line, const char *pos)
3288 {
3289         int *groups = wpa_config_parse_int_array(pos);
3290         if (groups == NULL) {
3291                 wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'",
3292                            line, pos);
3293                 return -1;
3294         }
3295
3296         os_free(config->sae_groups);
3297         config->sae_groups = groups;
3298
3299         return 0;
3300 }
3301
3302
3303 static int wpa_config_process_ap_vendor_elements(
3304         const struct global_parse_data *data,
3305         struct wpa_config *config, int line, const char *pos)
3306 {
3307         struct wpabuf *tmp;
3308         int len = os_strlen(pos) / 2;
3309         u8 *p;
3310
3311         if (!len) {
3312                 wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements",
3313                            line);
3314                 return -1;
3315         }
3316
3317         tmp = wpabuf_alloc(len);
3318         if (tmp) {
3319                 p = wpabuf_put(tmp, len);
3320
3321                 if (hexstr2bin(pos, p, len)) {
3322                         wpa_printf(MSG_ERROR, "Line %d: invalid "
3323                                    "ap_vendor_elements", line);
3324                         wpabuf_free(tmp);
3325                         return -1;
3326                 }
3327
3328                 wpabuf_free(config->ap_vendor_elements);
3329                 config->ap_vendor_elements = tmp;
3330         } else {
3331                 wpa_printf(MSG_ERROR, "Cannot allocate memory for "
3332                            "ap_vendor_elements");
3333                 return -1;
3334         }
3335
3336         return 0;
3337 }
3338
3339
3340 #ifdef CONFIG_CTRL_IFACE
3341 static int wpa_config_process_no_ctrl_interface(
3342         const struct global_parse_data *data,
3343         struct wpa_config *config, int line, const char *pos)
3344 {
3345         wpa_printf(MSG_DEBUG, "no_ctrl_interface -> ctrl_interface=NULL");
3346         os_free(config->ctrl_interface);
3347         config->ctrl_interface = NULL;
3348         return 0;
3349 }
3350 #endif /* CONFIG_CTRL_IFACE */
3351
3352
3353 #ifdef OFFSET
3354 #undef OFFSET
3355 #endif /* OFFSET */
3356 /* OFFSET: Get offset of a variable within the wpa_config structure */
3357 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
3358
3359 #define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL
3360 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL
3361 #define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f)
3362 #define INT(f) _INT(f), NULL, NULL
3363 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
3364 #define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f)
3365 #define STR(f) _STR(f), NULL, NULL
3366 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
3367 #define BIN(f) #f, wpa_global_config_parse_bin, OFFSET(f), NULL, NULL
3368 #define IPV4(f) #f, wpa_global_config_parse_ipv4, OFFSET(f), NULL, NULL
3369
3370 static const struct global_parse_data global_fields[] = {
3371 #ifdef CONFIG_CTRL_IFACE
3372         { STR(ctrl_interface), 0 },
3373         { FUNC_NO_VAR(no_ctrl_interface), 0 },
3374         { STR(ctrl_interface_group), 0 } /* deprecated */,
3375 #endif /* CONFIG_CTRL_IFACE */
3376         { INT_RANGE(eapol_version, 1, 2), 0 },
3377         { INT(ap_scan), 0 },
3378         { FUNC(bgscan), 0 },
3379         { INT(disable_scan_offload), 0 },
3380         { INT(fast_reauth), 0 },
3381         { STR(opensc_engine_path), 0 },
3382         { STR(pkcs11_engine_path), 0 },
3383         { STR(pkcs11_module_path), 0 },
3384         { STR(pcsc_reader), 0 },
3385         { STR(pcsc_pin), 0 },
3386         { INT(external_sim), 0 },
3387         { STR(driver_param), 0 },
3388         { INT(dot11RSNAConfigPMKLifetime), 0 },
3389         { INT(dot11RSNAConfigPMKReauthThreshold), 0 },
3390         { INT(dot11RSNAConfigSATimeout), 0 },
3391 #ifndef CONFIG_NO_CONFIG_WRITE
3392         { INT(update_config), 0 },
3393 #endif /* CONFIG_NO_CONFIG_WRITE */
3394         { FUNC_NO_VAR(load_dynamic_eap), 0 },
3395 #ifdef CONFIG_WPS
3396         { FUNC(uuid), CFG_CHANGED_UUID },
3397         { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME },
3398         { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
3399         { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
3400         { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
3401         { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
3402         { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
3403         { FUNC(os_version), CFG_CHANGED_OS_VERSION },
3404         { STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
3405         { INT_RANGE(wps_cred_processing, 0, 2), 0 },
3406         { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
3407 #endif /* CONFIG_WPS */
3408 #ifdef CONFIG_P2P
3409         { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
3410         { INT(p2p_listen_reg_class), 0 },
3411         { INT(p2p_listen_channel), 0 },
3412         { INT(p2p_oper_reg_class), CFG_CHANGED_P2P_OPER_CHANNEL },
3413         { INT(p2p_oper_channel), CFG_CHANGED_P2P_OPER_CHANNEL },
3414         { INT_RANGE(p2p_go_intent, 0, 15), 0 },
3415         { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
3416         { INT_RANGE(persistent_reconnect, 0, 1), 0 },
3417         { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
3418         { INT(p2p_group_idle), 0 },
3419         { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
3420         { FUNC(p2p_no_go_freq), CFG_CHANGED_P2P_PREF_CHAN },
3421         { INT_RANGE(p2p_add_cli_chan, 0, 1), 0 },
3422         { INT(p2p_go_ht40), 0 },
3423         { INT(p2p_go_vht), 0 },
3424         { INT(p2p_disabled), 0 },
3425         { INT(p2p_no_group_iface), 0 },
3426         { INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 },
3427         { IPV4(ip_addr_go), 0 },
3428         { IPV4(ip_addr_mask), 0 },
3429         { IPV4(ip_addr_start), 0 },
3430         { IPV4(ip_addr_end), 0 },
3431 #endif /* CONFIG_P2P */
3432         { FUNC(country), CFG_CHANGED_COUNTRY },
3433         { INT(bss_max_count), 0 },
3434         { INT(bss_expiration_age), 0 },
3435         { INT(bss_expiration_scan_count), 0 },
3436         { INT_RANGE(filter_ssids, 0, 1), 0 },
3437         { INT_RANGE(filter_rssi, -100, 0), 0 },
3438         { INT(max_num_sta), 0 },
3439         { INT_RANGE(disassoc_low_ack, 0, 1), 0 },
3440 #ifdef CONFIG_HS20
3441         { INT_RANGE(hs20, 0, 1), 0 },
3442 #endif /* CONFIG_HS20 */
3443         { INT_RANGE(interworking, 0, 1), 0 },
3444         { FUNC(hessid), 0 },
3445         { INT_RANGE(access_network_type, 0, 15), 0 },
3446         { INT_RANGE(pbc_in_m1, 0, 1), 0 },
3447         { STR(autoscan), 0 },
3448         { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff),
3449           CFG_CHANGED_NFC_PASSWORD_TOKEN },
3450         { BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3451         { BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3452         { BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3453         { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
3454         { INT(p2p_go_max_inactivity), 0 },
3455         { INT_RANGE(auto_interworking, 0, 1), 0 },
3456         { INT(okc), 0 },
3457         { INT(pmf), 0 },
3458         { FUNC(sae_groups), 0 },
3459         { INT(dtim_period), 0 },
3460         { INT(beacon_int), 0 },
3461         { FUNC(ap_vendor_elements), 0 },
3462         { INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
3463         { FUNC(freq_list), 0 },
3464         { INT(scan_cur_freq), 0 },
3465         { INT(sched_scan_interval), 0 },
3466         { INT(tdls_external_control), 0},
3467 };
3468
3469 #undef FUNC
3470 #undef _INT
3471 #undef INT
3472 #undef INT_RANGE
3473 #undef _STR
3474 #undef STR
3475 #undef STR_RANGE
3476 #undef BIN
3477 #undef IPV4
3478 #define NUM_GLOBAL_FIELDS ARRAY_SIZE(global_fields)
3479
3480
3481 int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
3482 {
3483         size_t i;
3484         int ret = 0;
3485
3486         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
3487                 const struct global_parse_data *field = &global_fields[i];
3488                 size_t flen = os_strlen(field->name);
3489                 if (os_strncmp(pos, field->name, flen) != 0 ||
3490                     pos[flen] != '=')
3491                         continue;
3492
3493                 if (field->parser(field, config, line, pos + flen + 1)) {
3494                         wpa_printf(MSG_ERROR, "Line %d: failed to "
3495                                    "parse '%s'.", line, pos);
3496                         ret = -1;
3497                 }
3498                 if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN)
3499                         config->wps_nfc_pw_from_config = 1;
3500                 config->changed_parameters |= field->changed_flag;
3501                 break;
3502         }
3503         if (i == NUM_GLOBAL_FIELDS) {
3504 #ifdef CONFIG_AP
3505                 if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
3506                         char *tmp = os_strchr(pos, '=');
3507                         if (tmp == NULL) {
3508                                 if (line < 0)
3509                                         return -1;
3510                                 wpa_printf(MSG_ERROR, "Line %d: invalid line "
3511                                            "'%s'", line, pos);
3512                                 return -1;
3513                         }
3514                         *tmp++ = '\0';
3515                         if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
3516                                                   tmp)) {
3517                                 wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
3518                                            "AC item", line);
3519                                 return -1;
3520                         }
3521                 }
3522 #endif /* CONFIG_AP */
3523                 if (line < 0)
3524                         return -1;
3525                 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
3526                            line, pos);
3527                 ret = -1;
3528         }
3529
3530         return ret;
3531 }