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