wpa_supplicant/config.c

   1 /*
   2  * WPA Supplicant / Configuration parser and common functions
   3  * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "utils/uuid.h"
  13 #include "utils/ip_addr.h"
  14 #include "crypto/sha1.h"
  15 #include "rsn_supp/wpa.h"
  16 #include "eap_peer/eap.h"
  17 #include "p2p/p2p.h"
  18 #include "config.h"
  19
  20
  21 #if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
  22 #define NO_CONFIG_WRITE
  23 #endif
  24
  25 /*
  26  * Structure for network configuration parsing. This data is used to implement
  27  * a generic parser for each network block variable. The table of configuration
  28  * variables is defined below in this file (ssid_fields[]).
  29  */
  30 struct parse_data {
  31         /* Configuration variable name */
  32         char *name;
  33
  34         /* Parser function for this variable */
  35         int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
  36                       int line, const char *value);
  37
  38 #ifndef NO_CONFIG_WRITE
  39         /* Writer function (i.e., to get the variable in text format from
  40          * internal presentation). */
  41         char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
  42 #endif /* NO_CONFIG_WRITE */
  43
  44         /* Variable specific parameters for the parser. */
  45         void *param1, *param2, *param3, *param4;
  46
  47         /* 0 = this variable can be included in debug output and ctrl_iface
  48          * 1 = this variable contains key/private data and it must not be
  49          *     included in debug output unless explicitly requested. In
  50          *     addition, this variable will not be readable through the
  51          *     ctrl_iface.
  52          */
  53         int key_data;
  54 };
  55
  56
  57 static int wpa_config_parse_str(const struct parse_data *data,
  58                                 struct wpa_ssid *ssid,
  59                                 int line, const char *value)
  60 {
  61         size_t res_len, *dst_len;
  62         char **dst, *tmp;
  63
  64         if (os_strcmp(value, "NULL") == 0) {
  65                 wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
  66                            data->name);
  67                 tmp = NULL;
  68                 res_len = 0;
  69                 goto set;
  70         }
  71
  72         tmp = wpa_config_parse_string(value, &res_len);
  73         if (tmp == NULL) {
  74                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
  75                            line, data->name,
  76                            data->key_data ? "[KEY DATA REMOVED]" : value);
  77                 return -1;
  78         }
  79
  80         if (data->key_data) {
  81                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
  82                                       (u8 *) tmp, res_len);
  83         } else {
  84                 wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
  85                                   (u8 *) tmp, res_len);
  86         }
  87
  88         if (data->param3 && res_len < (size_t) data->param3) {
  89                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
  90                            "min_len=%ld)", line, data->name,
  91                            (unsigned long) res_len, (long) data->param3);
  92                 os_free(tmp);
  93                 return -1;
  94         }
  95
  96         if (data->param4 && res_len > (size_t) data->param4) {
  97                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
  98                            "max_len=%ld)", line, data->name,
  99                            (unsigned long) res_len, (long) data->param4);
 100                 os_free(tmp);
 101                 return -1;
 102         }
 103
 104 set:
 105         dst = (char **) (((u8 *) ssid) + (long) data->param1);
 106         dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
 107         os_free(*dst);
 108         *dst = tmp;
 109         if (data->param2)
 110                 *dst_len = res_len;
 111
 112         return 0;
 113 }
 114
 115
 116 #ifndef NO_CONFIG_WRITE
 117 static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
 118 {
 119         char *buf;
 120
 121         buf = os_malloc(len + 3);
 122         if (buf == NULL)
 123                 return NULL;
 124         buf[0] = '"';
 125         os_memcpy(buf + 1, value, len);
 126         buf[len + 1] = '"';
 127         buf[len + 2] = '\0';
 128
 129         return buf;
 130 }
 131
 132
 133 static char * wpa_config_write_string_hex(const u8 *value, size_t len)
 134 {
 135         char *buf;
 136
 137         buf = os_zalloc(2 * len + 1);
 138         if (buf == NULL)
 139                 return NULL;
 140         wpa_snprintf_hex(buf, 2 * len + 1, value, len);
 141
 142         return buf;
 143 }
 144
 145
 146 static char * wpa_config_write_string(const u8 *value, size_t len)
 147 {
 148         if (value == NULL)
 149                 return NULL;
 150
 151         if (is_hex(value, len))
 152                 return wpa_config_write_string_hex(value, len);
 153         else
 154                 return wpa_config_write_string_ascii(value, len);
 155 }
 156
 157
 158 static char * wpa_config_write_str(const struct parse_data *data,
 159                                    struct wpa_ssid *ssid)
 160 {
 161         size_t len;
 162         char **src;
 163
 164         src = (char **) (((u8 *) ssid) + (long) data->param1);
 165         if (*src == NULL)
 166                 return NULL;
 167
 168         if (data->param2)
 169                 len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
 170         else
 171                 len = os_strlen(*src);
 172
 173         return wpa_config_write_string((const u8 *) *src, len);
 174 }
 175 #endif /* NO_CONFIG_WRITE */
 176
 177
 178 static int wpa_config_parse_int(const struct parse_data *data,
 179                                 struct wpa_ssid *ssid,
 180                                 int line, const char *value)
 181 {
 182         int val, *dst;
 183         char *end;
 184
 185         dst = (int *) (((u8 *) ssid) + (long) data->param1);
 186         val = strtol(value, &end, 0);
 187         if (*end) {
 188                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
 189                            line, value);
 190                 return -1;
 191         }
 192         *dst = val;
 193         wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
 194
 195         if (data->param3 && *dst < (long) data->param3) {
 196                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
 197                            "min_value=%ld)", line, data->name, *dst,
 198                            (long) data->param3);
 199                 *dst = (long) data->param3;
 200                 return -1;
 201         }
 202
 203         if (data->param4 && *dst > (long) data->param4) {
 204                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
 205                            "max_value=%ld)", line, data->name, *dst,
 206                            (long) data->param4);
 207                 *dst = (long) data->param4;
 208                 return -1;
 209         }
 210
 211         return 0;
 212 }
 213
 214
 215 #ifndef NO_CONFIG_WRITE
 216 static char * wpa_config_write_int(const struct parse_data *data,
 217                                    struct wpa_ssid *ssid)
 218 {
 219         int *src, res;
 220         char *value;
 221
 222         src = (int *) (((u8 *) ssid) + (long) data->param1);
 223
 224         value = os_malloc(20);
 225         if (value == NULL)
 226                 return NULL;
 227         res = os_snprintf(value, 20, "%d", *src);
 228         if (res < 0 || res >= 20) {
 229                 os_free(value);
 230                 return NULL;
 231         }
 232         value[20 - 1] = '\0';
 233         return value;
 234 }
 235 #endif /* NO_CONFIG_WRITE */
 236
 237
 238 static int wpa_config_parse_bssid(const struct parse_data *data,
 239                                   struct wpa_ssid *ssid, int line,
 240                                   const char *value)
 241 {
 242         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
 243             os_strcmp(value, "any") == 0) {
 244                 ssid->bssid_set = 0;
 245                 wpa_printf(MSG_MSGDUMP, "BSSID any");
 246                 return 0;
 247         }
 248         if (hwaddr_aton(value, ssid->bssid)) {
 249                 wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
 250                            line, value);
 251                 return -1;
 252         }
 253         ssid->bssid_set = 1;
 254         wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
 255         return 0;
 256 }
 257
 258
 259 #ifndef NO_CONFIG_WRITE
 260 static char * wpa_config_write_bssid(const struct parse_data *data,
 261                                      struct wpa_ssid *ssid)
 262 {
 263         char *value;
 264         int res;
 265
 266         if (!ssid->bssid_set)
 267                 return NULL;
 268
 269         value = os_malloc(20);
 270         if (value == NULL)
 271                 return NULL;
 272         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
 273         if (res < 0 || res >= 20) {
 274                 os_free(value);
 275                 return NULL;
 276         }
 277         value[20 - 1] = '\0';
 278         return value;
 279 }
 280 #endif /* NO_CONFIG_WRITE */
 281
 282
 283 static int wpa_config_parse_psk(const struct parse_data *data,
 284                                 struct wpa_ssid *ssid, int line,
 285                                 const char *value)
 286 {
 287 #ifdef CONFIG_EXT_PASSWORD
 288         if (os_strncmp(value, "ext:", 4) == 0) {
 289                 os_free(ssid->passphrase);
 290                 ssid->passphrase = NULL;
 291                 ssid->psk_set = 0;
 292                 os_free(ssid->ext_psk);
 293                 ssid->ext_psk = os_strdup(value + 4);
 294                 if (ssid->ext_psk == NULL)
 295                         return -1;
 296                 wpa_printf(MSG_DEBUG, "PSK: External password '%s'",
 297                            ssid->ext_psk);
 298                 return 0;
 299         }
 300 #endif /* CONFIG_EXT_PASSWORD */
 301
 302         if (*value == '"') {
 303 #ifndef CONFIG_NO_PBKDF2
 304                 const char *pos;
 305                 size_t len;
 306
 307                 value++;
 308                 pos = os_strrchr(value, '"');
 309                 if (pos)
 310                         len = pos - value;
 311                 else
 312                         len = os_strlen(value);
 313                 if (len < 8 || len > 63) {
 314                         wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
 315                                    "length %lu (expected: 8..63) '%s'.",
 316                                    line, (unsigned long) len, value);
 317                         return -1;
 318                 }
 319                 wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
 320                                       (u8 *) value, len);
 321                 if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
 322                     os_memcmp(ssid->passphrase, value, len) == 0)
 323                         return 0;
 324                 ssid->psk_set = 0;
 325                 os_free(ssid->passphrase);
 326                 ssid->passphrase = dup_binstr(value, len);
 327                 if (ssid->passphrase == NULL)
 328                         return -1;
 329                 return 0;
 330 #else /* CONFIG_NO_PBKDF2 */
 331                 wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
 332                            "supported.", line);
 333                 return -1;
 334 #endif /* CONFIG_NO_PBKDF2 */
 335         }
 336
 337         if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
 338             value[PMK_LEN * 2] != '\0') {
 339                 wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
 340                            line, value);
 341                 return -1;
 342         }
 343
 344         os_free(ssid->passphrase);
 345         ssid->passphrase = NULL;
 346
 347         ssid->psk_set = 1;
 348         wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
 349         return 0;
 350 }
 351
 352
 353 #ifndef NO_CONFIG_WRITE
 354 static char * wpa_config_write_psk(const struct parse_data *data,
 355                                    struct wpa_ssid *ssid)
 356 {
 357 #ifdef CONFIG_EXT_PASSWORD
 358         if (ssid->ext_psk) {
 359                 size_t len = 4 + os_strlen(ssid->ext_psk) + 1;
 360                 char *buf = os_malloc(len);
 361                 if (buf == NULL)
 362                         return NULL;
 363                 os_snprintf(buf, len, "ext:%s", ssid->ext_psk);
 364                 return buf;
 365         }
 366 #endif /* CONFIG_EXT_PASSWORD */
 367
 368         if (ssid->passphrase)
 369                 return wpa_config_write_string_ascii(
 370                         (const u8 *) ssid->passphrase,
 371                         os_strlen(ssid->passphrase));
 372
 373         if (ssid->psk_set)
 374                 return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
 375
 376         return NULL;
 377 }
 378 #endif /* NO_CONFIG_WRITE */
 379
 380
 381 static int wpa_config_parse_proto(const struct parse_data *data,
 382                                   struct wpa_ssid *ssid, int line,
 383                                   const char *value)
 384 {
 385         int val = 0, last, errors = 0;
 386         char *start, *end, *buf;
 387
 388         buf = os_strdup(value);
 389         if (buf == NULL)
 390                 return -1;
 391         start = buf;
 392
 393         while (*start != '\0') {
 394                 while (*start == ' ' || *start == '\t')
 395                         start++;
 396                 if (*start == '\0')
 397                         break;
 398                 end = start;
 399                 while (*end != ' ' && *end != '\t' && *end != '\0')
 400                         end++;
 401                 last = *end == '\0';
 402                 *end = '\0';
 403                 if (os_strcmp(start, "WPA") == 0)
 404                         val |= WPA_PROTO_WPA;
 405                 else if (os_strcmp(start, "RSN") == 0 ||
 406                          os_strcmp(start, "WPA2") == 0)
 407                         val |= WPA_PROTO_RSN;
 408                 else 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 first = 1, ret;
 439         char *buf, *pos, *end;
 440
 441         pos = buf = os_zalloc(10);
 442         if (buf == NULL)
 443                 return NULL;
 444         end = buf + 10;
 445
 446         if (ssid->proto & WPA_PROTO_WPA) {
 447                 ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " ");
 448                 if (ret < 0 || ret >= end - pos)
 449                         return buf;
 450                 pos += ret;
 451                 first = 0;
 452         }
 453
 454         if (ssid->proto & WPA_PROTO_RSN) {
 455                 ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " ");
 456                 if (ret < 0 || ret >= end - pos)
 457                         return buf;
 458                 pos += ret;
 459                 first = 0;
 460         }
 461
 462         return buf;
 463 }
 464 #endif /* NO_CONFIG_WRITE */
 465
 466
 467 static int wpa_config_parse_key_mgmt(const struct parse_data *data,
 468                                      struct wpa_ssid *ssid, int line,
 469                                      const char *value)
 470 {
 471         int val = 0, last, errors = 0;
 472         char *start, *end, *buf;
 473
 474         buf = os_strdup(value);
 475         if (buf == NULL)
 476                 return -1;
 477         start = buf;
 478
 479         while (*start != '\0') {
 480                 while (*start == ' ' || *start == '\t')
 481                         start++;
 482                 if (*start == '\0')
 483                         break;
 484                 end = start;
 485                 while (*end != ' ' && *end != '\t' && *end != '\0')
 486                         end++;
 487                 last = *end == '\0';
 488                 *end = '\0';
 489                 if (os_strcmp(start, "WPA-PSK") == 0)
 490                         val |= WPA_KEY_MGMT_PSK;
 491                 else if (os_strcmp(start, "WPA-EAP") == 0)
 492                         val |= WPA_KEY_MGMT_IEEE8021X;
 493                 else if (os_strcmp(start, "IEEE8021X") == 0)
 494                         val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
 495                 else if (os_strcmp(start, "NONE") == 0)
 496                         val |= WPA_KEY_MGMT_NONE;
 497                 else if (os_strcmp(start, "WPA-NONE") == 0)
 498                         val |= WPA_KEY_MGMT_WPA_NONE;
 499 #ifdef CONFIG_IEEE80211R
 500                 else if (os_strcmp(start, "FT-PSK") == 0)
 501                         val |= WPA_KEY_MGMT_FT_PSK;
 502                 else if (os_strcmp(start, "FT-EAP") == 0)
 503                         val |= WPA_KEY_MGMT_FT_IEEE8021X;
 504 #endif /* CONFIG_IEEE80211R */
 505 #ifdef CONFIG_IEEE80211W
 506                 else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
 507                         val |= WPA_KEY_MGMT_PSK_SHA256;
 508                 else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
 509                         val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
 510 #endif /* CONFIG_IEEE80211W */
 511 #ifdef CONFIG_WPS
 512                 else if (os_strcmp(start, "WPS") == 0)
 513                         val |= WPA_KEY_MGMT_WPS;
 514 #endif /* CONFIG_WPS */
 515 #ifdef CONFIG_SAE
 516                 else if (os_strcmp(start, "SAE") == 0)
 517                         val |= WPA_KEY_MGMT_SAE;
 518                 else if (os_strcmp(start, "FT-SAE") == 0)
 519                         val |= WPA_KEY_MGMT_FT_SAE;
 520 #endif /* CONFIG_SAE */
 521 #ifdef CONFIG_HS20
 522                 else if (os_strcmp(start, "OSEN") == 0)
 523                         val |= WPA_KEY_MGMT_OSEN;
 524 #endif /* CONFIG_HS20 */
 525                 else {
 526                         wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
 527                                    line, start);
 528                         errors++;
 529                 }
 530
 531                 if (last)
 532                         break;
 533                 start = end + 1;
 534         }
 535         os_free(buf);
 536
 537         if (val == 0) {
 538                 wpa_printf(MSG_ERROR,
 539                            "Line %d: no key_mgmt values configured.", line);
 540                 errors++;
 541         }
 542
 543         wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
 544         ssid->key_mgmt = val;
 545         return errors ? -1 : 0;
 546 }
 547
 548
 549 #ifndef NO_CONFIG_WRITE
 550 static char * wpa_config_write_key_mgmt(const struct parse_data *data,
 551                                         struct wpa_ssid *ssid)
 552 {
 553         char *buf, *pos, *end;
 554         int ret;
 555
 556         pos = buf = os_zalloc(100);
 557         if (buf == NULL)
 558                 return NULL;
 559         end = buf + 100;
 560
 561         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
 562                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
 563                                   pos == buf ? "" : " ");
 564                 if (ret < 0 || ret >= end - pos) {
 565                         end[-1] = '\0';
 566                         return buf;
 567                 }
 568                 pos += ret;
 569         }
 570
 571         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
 572                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
 573                                   pos == buf ? "" : " ");
 574                 if (ret < 0 || ret >= end - pos) {
 575                         end[-1] = '\0';
 576                         return buf;
 577                 }
 578                 pos += ret;
 579         }
 580
 581         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 582                 ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
 583                                   pos == buf ? "" : " ");
 584                 if (ret < 0 || ret >= end - pos) {
 585                         end[-1] = '\0';
 586                         return buf;
 587                 }
 588                 pos += ret;
 589         }
 590
 591         if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
 592                 ret = os_snprintf(pos, end - pos, "%sNONE",
 593                                   pos == buf ? "" : " ");
 594                 if (ret < 0 || ret >= end - pos) {
 595                         end[-1] = '\0';
 596                         return buf;
 597                 }
 598                 pos += ret;
 599         }
 600
 601         if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
 602                 ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
 603                                   pos == buf ? "" : " ");
 604                 if (ret < 0 || ret >= end - pos) {
 605                         end[-1] = '\0';
 606                         return buf;
 607                 }
 608                 pos += ret;
 609         }
 610
 611 #ifdef CONFIG_IEEE80211R
 612         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) {
 613                 ret = os_snprintf(pos, end - pos, "%sFT-PSK",
 614                                   pos == buf ? "" : " ");
 615                 if (ret < 0 || ret >= end - pos) {
 616                         end[-1] = '\0';
 617                         return buf;
 618                 }
 619                 pos += ret;
 620         }
 621
 622         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
 623                 ret = os_snprintf(pos, end - pos, "%sFT-EAP",
 624                                   pos == buf ? "" : " ");
 625                 if (ret < 0 || ret >= end - pos) {
 626                         end[-1] = '\0';
 627                         return buf;
 628                 }
 629                 pos += ret;
 630         }
 631 #endif /* CONFIG_IEEE80211R */
 632
 633 #ifdef CONFIG_IEEE80211W
 634         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
 635                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
 636                                   pos == buf ? "" : " ");
 637                 if (ret < 0 || ret >= end - pos) {
 638                         end[-1] = '\0';
 639                         return buf;
 640                 }
 641                 pos += ret;
 642         }
 643
 644         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 645                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
 646                                   pos == buf ? "" : " ");
 647                 if (ret < 0 || ret >= end - pos) {
 648                         end[-1] = '\0';
 649                         return buf;
 650                 }
 651                 pos += ret;
 652         }
 653 #endif /* CONFIG_IEEE80211W */
 654
 655 #ifdef CONFIG_WPS
 656         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 657                 ret = os_snprintf(pos, end - pos, "%sWPS",
 658                                   pos == buf ? "" : " ");
 659                 if (ret < 0 || ret >= end - pos) {
 660                         end[-1] = '\0';
 661                         return buf;
 662                 }
 663                 pos += ret;
 664         }
 665 #endif /* CONFIG_WPS */
 666
 667         return buf;
 668 }
 669 #endif /* NO_CONFIG_WRITE */
 670
 671
 672 static int wpa_config_parse_cipher(int line, const char *value)
 673 {
 674         int val = wpa_parse_cipher(value);
 675         if (val < 0) {
 676                 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
 677                            line, value);
 678                 return -1;
 679         }
 680         if (val == 0) {
 681                 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
 682                            line);
 683                 return -1;
 684         }
 685         return val;
 686 }
 687
 688
 689 #ifndef NO_CONFIG_WRITE
 690 static char * wpa_config_write_cipher(int cipher)
 691 {
 692         char *buf = os_zalloc(50);
 693         if (buf == NULL)
 694                 return NULL;
 695
 696         if (wpa_write_ciphers(buf, buf + 50, cipher, " ") < 0) {
 697                 os_free(buf);
 698                 return NULL;
 699         }
 700
 701         return buf;
 702 }
 703 #endif /* NO_CONFIG_WRITE */
 704
 705
 706 static int wpa_config_parse_pairwise(const struct parse_data *data,
 707                                      struct wpa_ssid *ssid, int line,
 708                                      const char *value)
 709 {
 710         int val;
 711         val = wpa_config_parse_cipher(line, value);
 712         if (val == -1)
 713                 return -1;
 714         if (val & ~WPA_ALLOWED_PAIRWISE_CIPHERS) {
 715                 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
 716                            "(0x%x).", line, val);
 717                 return -1;
 718         }
 719
 720         wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
 721         ssid->pairwise_cipher = val;
 722         return 0;
 723 }
 724
 725
 726 #ifndef NO_CONFIG_WRITE
 727 static char * wpa_config_write_pairwise(const struct parse_data *data,
 728                                         struct wpa_ssid *ssid)
 729 {
 730         return wpa_config_write_cipher(ssid->pairwise_cipher);
 731 }
 732 #endif /* NO_CONFIG_WRITE */
 733
 734
 735 static int wpa_config_parse_group(const struct parse_data *data,
 736                                   struct wpa_ssid *ssid, int line,
 737                                   const char *value)
 738 {
 739         int val;
 740         val = wpa_config_parse_cipher(line, value);
 741         if (val == -1)
 742                 return -1;
 743         if (val & ~WPA_ALLOWED_GROUP_CIPHERS) {
 744                 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
 745                            "(0x%x).", line, val);
 746                 return -1;
 747         }
 748
 749         wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
 750         ssid->group_cipher = val;
 751         return 0;
 752 }
 753
 754
 755 #ifndef NO_CONFIG_WRITE
 756 static char * wpa_config_write_group(const struct parse_data *data,
 757                                      struct wpa_ssid *ssid)
 758 {
 759         return wpa_config_write_cipher(ssid->group_cipher);
 760 }
 761 #endif /* NO_CONFIG_WRITE */
 762
 763
 764 static int wpa_config_parse_auth_alg(const struct parse_data *data,
 765                                      struct wpa_ssid *ssid, int line,
 766                                      const char *value)
 767 {
 768         int val = 0, last, errors = 0;
 769         char *start, *end, *buf;
 770
 771         buf = os_strdup(value);
 772         if (buf == NULL)
 773                 return -1;
 774         start = buf;
 775
 776         while (*start != '\0') {
 777                 while (*start == ' ' || *start == '\t')
 778                         start++;
 779                 if (*start == '\0')
 780                         break;
 781                 end = start;
 782                 while (*end != ' ' && *end != '\t' && *end != '\0')
 783                         end++;
 784                 last = *end == '\0';
 785                 *end = '\0';
 786                 if (os_strcmp(start, "OPEN") == 0)
 787                         val |= WPA_AUTH_ALG_OPEN;
 788                 else if (os_strcmp(start, "SHARED") == 0)
 789                         val |= WPA_AUTH_ALG_SHARED;
 790                 else if (os_strcmp(start, "LEAP") == 0)
 791                         val |= WPA_AUTH_ALG_LEAP;
 792                 else {
 793                         wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
 794                                    line, start);
 795                         errors++;
 796                 }
 797
 798                 if (last)
 799                         break;
 800                 start = end + 1;
 801         }
 802         os_free(buf);
 803
 804         if (val == 0) {
 805                 wpa_printf(MSG_ERROR,
 806                            "Line %d: no auth_alg values configured.", line);
 807                 errors++;
 808         }
 809
 810         wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
 811         ssid->auth_alg = val;
 812         return errors ? -1 : 0;
 813 }
 814
 815
 816 #ifndef NO_CONFIG_WRITE
 817 static char * wpa_config_write_auth_alg(const struct parse_data *data,
 818                                         struct wpa_ssid *ssid)
 819 {
 820         char *buf, *pos, *end;
 821         int ret;
 822
 823         pos = buf = os_zalloc(30);
 824         if (buf == NULL)
 825                 return NULL;
 826         end = buf + 30;
 827
 828         if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
 829                 ret = os_snprintf(pos, end - pos, "%sOPEN",
 830                                   pos == buf ? "" : " ");
 831                 if (ret < 0 || ret >= end - pos) {
 832                         end[-1] = '\0';
 833                         return buf;
 834                 }
 835                 pos += ret;
 836         }
 837
 838         if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
 839                 ret = os_snprintf(pos, end - pos, "%sSHARED",
 840                                   pos == buf ? "" : " ");
 841                 if (ret < 0 || ret >= end - pos) {
 842                         end[-1] = '\0';
 843                         return buf;
 844                 }
 845                 pos += ret;
 846         }
 847
 848         if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
 849                 ret = os_snprintf(pos, end - pos, "%sLEAP",
 850                                   pos == buf ? "" : " ");
 851                 if (ret < 0 || ret >= end - pos) {
 852                         end[-1] = '\0';
 853                         return buf;
 854                 }
 855                 pos += ret;
 856         }
 857
 858         return buf;
 859 }
 860 #endif /* NO_CONFIG_WRITE */
 861
 862
 863 static int * wpa_config_parse_int_array(const char *value)
 864 {
 865         int *freqs;
 866         size_t used, len;
 867         const char *pos;
 868
 869         used = 0;
 870         len = 10;
 871         freqs = os_calloc(len + 1, sizeof(int));
 872         if (freqs == NULL)
 873                 return NULL;
 874
 875         pos = value;
 876         while (pos) {
 877                 while (*pos == ' ')
 878                         pos++;
 879                 if (used == len) {
 880                         int *n;
 881                         size_t i;
 882                         n = os_realloc_array(freqs, len * 2 + 1, sizeof(int));
 883                         if (n == NULL) {
 884                                 os_free(freqs);
 885                                 return NULL;
 886                         }
 887                         for (i = len; i <= len * 2; i++)
 888                                 n[i] = 0;
 889                         freqs = n;
 890                         len *= 2;
 891                 }
 892
 893                 freqs[used] = atoi(pos);
 894                 if (freqs[used] == 0)
 895                         break;
 896                 used++;
 897                 pos = os_strchr(pos + 1, ' ');
 898         }
 899
 900         return freqs;
 901 }
 902
 903
 904 static int wpa_config_parse_scan_freq(const struct parse_data *data,
 905                                       struct wpa_ssid *ssid, int line,
 906                                       const char *value)
 907 {
 908         int *freqs;
 909
 910         freqs = wpa_config_parse_int_array(value);
 911         if (freqs == NULL)
 912                 return -1;
 913         if (freqs[0] == 0) {
 914                 os_free(freqs);
 915                 freqs = NULL;
 916         }
 917         os_free(ssid->scan_freq);
 918         ssid->scan_freq = freqs;
 919
 920         return 0;
 921 }
 922
 923
 924 static int wpa_config_parse_freq_list(const struct parse_data *data,
 925                                       struct wpa_ssid *ssid, int line,
 926                                       const char *value)
 927 {
 928         int *freqs;
 929
 930         freqs = wpa_config_parse_int_array(value);
 931         if (freqs == NULL)
 932                 return -1;
 933         if (freqs[0] == 0) {
 934                 os_free(freqs);
 935                 freqs = NULL;
 936         }
 937         os_free(ssid->freq_list);
 938         ssid->freq_list = freqs;
 939
 940         return 0;
 941 }
 942
 943
 944 #ifndef NO_CONFIG_WRITE
 945 static char * wpa_config_write_freqs(const struct parse_data *data,
 946                                      const int *freqs)
 947 {
 948         char *buf, *pos, *end;
 949         int i, ret;
 950         size_t count;
 951
 952         if (freqs == NULL)
 953                 return NULL;
 954
 955         count = 0;
 956         for (i = 0; freqs[i]; i++)
 957                 count++;
 958
 959         pos = buf = os_zalloc(10 * count + 1);
 960         if (buf == NULL)
 961                 return NULL;
 962         end = buf + 10 * count + 1;
 963
 964         for (i = 0; freqs[i]; i++) {
 965                 ret = os_snprintf(pos, end - pos, "%s%u",
 966                                   i == 0 ? "" : " ", freqs[i]);
 967                 if (ret < 0 || ret >= end - pos) {
 968                         end[-1] = '\0';
 969                         return buf;
 970                 }
 971                 pos += ret;
 972         }
 973
 974         return buf;
 975 }
 976
 977
 978 static char * wpa_config_write_scan_freq(const struct parse_data *data,
 979                                          struct wpa_ssid *ssid)
 980 {
 981         return wpa_config_write_freqs(data, ssid->scan_freq);
 982 }
 983
 984
 985 static char * wpa_config_write_freq_list(const struct parse_data *data,
 986                                          struct wpa_ssid *ssid)
 987 {
 988         return wpa_config_write_freqs(data, ssid->freq_list);
 989 }
 990 #endif /* NO_CONFIG_WRITE */
 991
 992
 993 #ifdef IEEE8021X_EAPOL
 994 static int wpa_config_parse_eap(const struct parse_data *data,
 995                                 struct wpa_ssid *ssid, int line,
 996                                 const char *value)
 997 {
 998         int last, errors = 0;
 999         char *start, *end, *buf;
1000         struct eap_method_type *methods = NULL, *tmp;
1001         size_t num_methods = 0;
1002
1003         buf = os_strdup(value);
1004         if (buf == NULL)
1005                 return -1;
1006         start = buf;
1007
1008         while (*start != '\0') {
1009                 while (*start == ' ' || *start == '\t')
1010                         start++;
1011                 if (*start == '\0')
1012                         break;
1013                 end = start;
1014                 while (*end != ' ' && *end != '\t' && *end != '\0')
1015                         end++;
1016                 last = *end == '\0';
1017                 *end = '\0';
1018                 tmp = methods;
1019                 methods = os_realloc_array(methods, num_methods + 1,
1020                                            sizeof(*methods));
1021                 if (methods == NULL) {
1022                         os_free(tmp);
1023                         os_free(buf);
1024                         return -1;
1025                 }
1026                 methods[num_methods].method = eap_peer_get_type(
1027                         start, &methods[num_methods].vendor);
1028                 if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1029                     methods[num_methods].method == EAP_TYPE_NONE) {
1030                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
1031                                    "'%s'", line, start);
1032                         wpa_printf(MSG_ERROR, "You may need to add support for"
1033                                    " this EAP method during wpa_supplicant\n"
1034                                    "build time configuration.\n"
1035                                    "See README for more information.");
1036                         errors++;
1037                 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1038                            methods[num_methods].method == EAP_TYPE_LEAP)
1039                         ssid->leap++;
1040                 else
1041                         ssid->non_leap++;
1042                 num_methods++;
1043                 if (last)
1044                         break;
1045                 start = end + 1;
1046         }
1047         os_free(buf);
1048
1049         tmp = methods;
1050         methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods));
1051         if (methods == NULL) {
1052                 os_free(tmp);
1053                 return -1;
1054         }
1055         methods[num_methods].vendor = EAP_VENDOR_IETF;
1056         methods[num_methods].method = EAP_TYPE_NONE;
1057         num_methods++;
1058
1059         wpa_hexdump(MSG_MSGDUMP, "eap methods",
1060                     (u8 *) methods, num_methods * sizeof(*methods));
1061         os_free(ssid->eap.eap_methods);
1062         ssid->eap.eap_methods = methods;
1063         return errors ? -1 : 0;
1064 }
1065
1066
1067 static char * wpa_config_write_eap(const struct parse_data *data,
1068                                    struct wpa_ssid *ssid)
1069 {
1070         int i, ret;
1071         char *buf, *pos, *end;
1072         const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
1073         const char *name;
1074
1075         if (eap_methods == NULL)
1076                 return NULL;
1077
1078         pos = buf = os_zalloc(100);
1079         if (buf == NULL)
1080                 return NULL;
1081         end = buf + 100;
1082
1083         for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
1084                      eap_methods[i].method != EAP_TYPE_NONE; i++) {
1085                 name = eap_get_name(eap_methods[i].vendor,
1086                                     eap_methods[i].method);
1087                 if (name) {
1088                         ret = os_snprintf(pos, end - pos, "%s%s",
1089                                           pos == buf ? "" : " ", name);
1090                         if (ret < 0 || ret >= end - pos)
1091                                 break;
1092                         pos += ret;
1093                 }
1094         }
1095
1096         end[-1] = '\0';
1097
1098         return buf;
1099 }
1100
1101
1102 static int wpa_config_parse_password(const struct parse_data *data,
1103                                      struct wpa_ssid *ssid, int line,
1104                                      const char *value)
1105 {
1106         u8 *hash;
1107
1108         if (os_strcmp(value, "NULL") == 0) {
1109                 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
1110                 os_free(ssid->eap.password);
1111                 ssid->eap.password = NULL;
1112                 ssid->eap.password_len = 0;
1113                 return 0;
1114         }
1115
1116 #ifdef CONFIG_EXT_PASSWORD
1117         if (os_strncmp(value, "ext:", 4) == 0) {
1118                 char *name = os_strdup(value + 4);
1119                 if (name == NULL)
1120                         return -1;
1121                 os_free(ssid->eap.password);
1122                 ssid->eap.password = (u8 *) name;
1123                 ssid->eap.password_len = os_strlen(name);
1124                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1125                 ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD;
1126                 return 0;
1127         }
1128 #endif /* CONFIG_EXT_PASSWORD */
1129
1130         if (os_strncmp(value, "hash:", 5) != 0) {
1131                 char *tmp;
1132                 size_t res_len;
1133
1134                 tmp = wpa_config_parse_string(value, &res_len);
1135                 if (tmp == NULL) {
1136                         wpa_printf(MSG_ERROR, "Line %d: failed to parse "
1137                                    "password.", line);
1138                         return -1;
1139                 }
1140                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
1141                                       (u8 *) tmp, res_len);
1142
1143                 os_free(ssid->eap.password);
1144                 ssid->eap.password = (u8 *) tmp;
1145                 ssid->eap.password_len = res_len;
1146                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1147                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1148
1149                 return 0;
1150         }
1151
1152
1153         /* NtPasswordHash: hash:<32 hex digits> */
1154         if (os_strlen(value + 5) != 2 * 16) {
1155                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length "
1156                            "(expected 32 hex digits)", line);
1157                 return -1;
1158         }
1159
1160         hash = os_malloc(16);
1161         if (hash == NULL)
1162                 return -1;
1163
1164         if (hexstr2bin(value + 5, hash, 16)) {
1165                 os_free(hash);
1166                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
1167                 return -1;
1168         }
1169
1170         wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
1171
1172         os_free(ssid->eap.password);
1173         ssid->eap.password = hash;
1174         ssid->eap.password_len = 16;
1175         ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1176         ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1177
1178         return 0;
1179 }
1180
1181
1182 static char * wpa_config_write_password(const struct parse_data *data,
1183                                         struct wpa_ssid *ssid)
1184 {
1185         char *buf;
1186
1187         if (ssid->eap.password == NULL)
1188                 return NULL;
1189
1190 #ifdef CONFIG_EXT_PASSWORD
1191         if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) {
1192                 buf = os_zalloc(4 + ssid->eap.password_len + 1);
1193                 if (buf == NULL)
1194                         return NULL;
1195                 os_memcpy(buf, "ext:", 4);
1196                 os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len);
1197                 return buf;
1198         }
1199 #endif /* CONFIG_EXT_PASSWORD */
1200
1201         if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
1202                 return wpa_config_write_string(
1203                         ssid->eap.password, ssid->eap.password_len);
1204         }
1205
1206         buf = os_malloc(5 + 32 + 1);
1207         if (buf == NULL)
1208                 return NULL;
1209
1210         os_memcpy(buf, "hash:", 5);
1211         wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
1212
1213         return buf;
1214 }
1215 #endif /* IEEE8021X_EAPOL */
1216
1217
1218 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
1219                                     const char *value, int idx)
1220 {
1221         char *buf, title[20];
1222         int res;
1223
1224         buf = wpa_config_parse_string(value, len);
1225         if (buf == NULL) {
1226                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
1227                            line, idx, value);
1228                 return -1;
1229         }
1230         if (*len > MAX_WEP_KEY_LEN) {
1231                 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
1232                            line, idx, value);
1233                 os_free(buf);
1234                 return -1;
1235         }
1236         if (*len && *len != 5 && *len != 13 && *len != 16) {
1237                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - "
1238                            "this network block will be ignored",
1239                            line, (unsigned int) *len);
1240         }
1241         os_memcpy(key, buf, *len);
1242         os_free(buf);
1243         res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
1244         if (res >= 0 && (size_t) res < sizeof(title))
1245                 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
1246         return 0;
1247 }
1248
1249
1250 static int wpa_config_parse_wep_key0(const struct parse_data *data,
1251                                      struct wpa_ssid *ssid, int line,
1252                                      const char *value)
1253 {
1254         return wpa_config_parse_wep_key(ssid->wep_key[0],
1255                                         &ssid->wep_key_len[0], line,
1256                                         value, 0);
1257 }
1258
1259
1260 static int wpa_config_parse_wep_key1(const struct parse_data *data,
1261                                      struct wpa_ssid *ssid, int line,
1262                                      const char *value)
1263 {
1264         return wpa_config_parse_wep_key(ssid->wep_key[1],
1265                                         &ssid->wep_key_len[1], line,
1266                                         value, 1);
1267 }
1268
1269
1270 static int wpa_config_parse_wep_key2(const struct parse_data *data,
1271                                      struct wpa_ssid *ssid, int line,
1272                                      const char *value)
1273 {
1274         return wpa_config_parse_wep_key(ssid->wep_key[2],
1275                                         &ssid->wep_key_len[2], line,
1276                                         value, 2);
1277 }
1278
1279
1280 static int wpa_config_parse_wep_key3(const struct parse_data *data,
1281                                      struct wpa_ssid *ssid, int line,
1282                                      const char *value)
1283 {
1284         return wpa_config_parse_wep_key(ssid->wep_key[3],
1285                                         &ssid->wep_key_len[3], line,
1286                                         value, 3);
1287 }
1288
1289
1290 #ifndef NO_CONFIG_WRITE
1291 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
1292 {
1293         if (ssid->wep_key_len[idx] == 0)
1294                 return NULL;
1295         return wpa_config_write_string(ssid->wep_key[idx],
1296                                        ssid->wep_key_len[idx]);
1297 }
1298
1299
1300 static char * wpa_config_write_wep_key0(const struct parse_data *data,
1301                                         struct wpa_ssid *ssid)
1302 {
1303         return wpa_config_write_wep_key(ssid, 0);
1304 }
1305
1306
1307 static char * wpa_config_write_wep_key1(const struct parse_data *data,
1308                                         struct wpa_ssid *ssid)
1309 {
1310         return wpa_config_write_wep_key(ssid, 1);
1311 }
1312
1313
1314 static char * wpa_config_write_wep_key2(const struct parse_data *data,
1315                                         struct wpa_ssid *ssid)
1316 {
1317         return wpa_config_write_wep_key(ssid, 2);
1318 }
1319
1320
1321 static char * wpa_config_write_wep_key3(const struct parse_data *data,
1322                                         struct wpa_ssid *ssid)
1323 {
1324         return wpa_config_write_wep_key(ssid, 3);
1325 }
1326 #endif /* NO_CONFIG_WRITE */
1327
1328
1329 #ifdef CONFIG_P2P
1330
1331 static int wpa_config_parse_go_p2p_dev_addr(const struct parse_data *data,
1332                                             struct wpa_ssid *ssid, int line,
1333                                             const char *value)
1334 {
1335         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
1336             os_strcmp(value, "any") == 0) {
1337                 os_memset(ssid->go_p2p_dev_addr, 0, ETH_ALEN);
1338                 wpa_printf(MSG_MSGDUMP, "GO P2P Device Address any");
1339                 return 0;
1340         }
1341         if (hwaddr_aton(value, ssid->go_p2p_dev_addr)) {
1342                 wpa_printf(MSG_ERROR, "Line %d: Invalid GO P2P Device Address '%s'.",
1343                            line, value);
1344                 return -1;
1345         }
1346         ssid->bssid_set = 1;
1347         wpa_printf(MSG_MSGDUMP, "GO P2P Device Address " MACSTR,
1348                    MAC2STR(ssid->go_p2p_dev_addr));
1349         return 0;
1350 }
1351
1352
1353 #ifndef NO_CONFIG_WRITE
1354 static char * wpa_config_write_go_p2p_dev_addr(const struct parse_data *data,
1355                                                struct wpa_ssid *ssid)
1356 {
1357         char *value;
1358         int res;
1359
1360         if (is_zero_ether_addr(ssid->go_p2p_dev_addr))
1361                 return NULL;
1362
1363         value = os_malloc(20);
1364         if (value == NULL)
1365                 return NULL;
1366         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->go_p2p_dev_addr));
1367         if (res < 0 || res >= 20) {
1368                 os_free(value);
1369                 return NULL;
1370         }
1371         value[20 - 1] = '\0';
1372         return value;
1373 }
1374 #endif /* NO_CONFIG_WRITE */
1375
1376
1377 static int wpa_config_parse_p2p_client_list(const struct parse_data *data,
1378                                             struct wpa_ssid *ssid, int line,
1379                                             const char *value)
1380 {
1381         const char *pos;
1382         u8 *buf, *n, addr[ETH_ALEN];
1383         size_t count;
1384
1385         buf = NULL;
1386         count = 0;
1387
1388         pos = value;
1389         while (pos && *pos) {
1390                 while (*pos == ' ')
1391                         pos++;
1392
1393                 if (hwaddr_aton(pos, addr)) {
1394                         if (count == 0) {
1395                                 wpa_printf(MSG_ERROR, "Line %d: Invalid "
1396                                            "p2p_client_list address '%s'.",
1397                                            line, value);
1398                                 os_free(buf);
1399                                 return -1;
1400                         }
1401                         /* continue anyway since this could have been from a
1402                          * truncated configuration file line */
1403                         wpa_printf(MSG_INFO, "Line %d: Ignore likely "
1404                                    "truncated p2p_client_list address '%s'",
1405                                    line, pos);
1406                 } else {
1407                         n = os_realloc_array(buf, count + 1, ETH_ALEN);
1408                         if (n == NULL) {
1409                                 os_free(buf);
1410                                 return -1;
1411                         }
1412                         buf = n;
1413                         os_memmove(buf + ETH_ALEN, buf, count * ETH_ALEN);
1414                         os_memcpy(buf, addr, ETH_ALEN);
1415                         count++;
1416                         wpa_hexdump(MSG_MSGDUMP, "p2p_client_list",
1417                                     addr, ETH_ALEN);
1418                 }
1419
1420                 pos = os_strchr(pos, ' ');
1421         }
1422
1423         os_free(ssid->p2p_client_list);
1424         ssid->p2p_client_list = buf;
1425         ssid->num_p2p_clients = count;
1426
1427         return 0;
1428 }
1429
1430
1431 #ifndef NO_CONFIG_WRITE
1432 static char * wpa_config_write_p2p_client_list(const struct parse_data *data,
1433                                                struct wpa_ssid *ssid)
1434 {
1435         char *value, *end, *pos;
1436         int res;
1437         size_t i;
1438
1439         if (ssid->p2p_client_list == NULL || ssid->num_p2p_clients == 0)
1440                 return NULL;
1441
1442         value = os_malloc(20 * ssid->num_p2p_clients);
1443         if (value == NULL)
1444                 return NULL;
1445         pos = value;
1446         end = value + 20 * ssid->num_p2p_clients;
1447
1448         for (i = ssid->num_p2p_clients; i > 0; i--) {
1449                 res = os_snprintf(pos, end - pos, MACSTR " ",
1450                                   MAC2STR(ssid->p2p_client_list +
1451                                           (i - 1) * ETH_ALEN));
1452                 if (res < 0 || res >= end - pos) {
1453                         os_free(value);
1454                         return NULL;
1455                 }
1456                 pos += res;
1457         }
1458
1459         if (pos > value)
1460                 pos[-1] = '\0';
1461
1462         return value;
1463 }
1464 #endif /* NO_CONFIG_WRITE */
1465
1466
1467 static int wpa_config_parse_psk_list(const struct parse_data *data,
1468                                      struct wpa_ssid *ssid, int line,
1469                                      const char *value)
1470 {
1471         struct psk_list_entry *p;
1472         const char *pos;
1473
1474         p = os_zalloc(sizeof(*p));
1475         if (p == NULL)
1476                 return -1;
1477
1478         pos = value;
1479         if (os_strncmp(pos, "P2P-", 4) == 0) {
1480                 p->p2p = 1;
1481                 pos += 4;
1482         }
1483
1484         if (hwaddr_aton(pos, p->addr)) {
1485                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list address '%s'",
1486                            line, pos);
1487                 os_free(p);
1488                 return -1;
1489         }
1490         pos += 17;
1491         if (*pos != '-') {
1492                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list '%s'",
1493                            line, pos);
1494                 os_free(p);
1495                 return -1;
1496         }
1497         pos++;
1498
1499         if (hexstr2bin(pos, p->psk, PMK_LEN) || pos[PMK_LEN * 2] != '\0') {
1500                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list PSK '%s'",
1501                            line, pos);
1502                 os_free(p);
1503                 return -1;
1504         }
1505
1506         dl_list_add(&ssid->psk_list, &p->list);
1507
1508         return 0;
1509 }
1510
1511
1512 #ifndef NO_CONFIG_WRITE
1513 static char * wpa_config_write_psk_list(const struct parse_data *data,
1514                                         struct wpa_ssid *ssid)
1515 {
1516         return NULL;
1517 }
1518 #endif /* NO_CONFIG_WRITE */
1519
1520 #endif /* CONFIG_P2P */
1521
1522 /* Helper macros for network block parser */
1523
1524 #ifdef OFFSET
1525 #undef OFFSET
1526 #endif /* OFFSET */
1527 /* OFFSET: Get offset of a variable within the wpa_ssid structure */
1528 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
1529
1530 /* STR: Define a string variable for an ASCII string; f = field name */
1531 #ifdef NO_CONFIG_WRITE
1532 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
1533 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f)
1534 #else /* NO_CONFIG_WRITE */
1535 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
1536 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f)
1537 #endif /* NO_CONFIG_WRITE */
1538 #define STR(f) _STR(f), NULL, NULL, NULL, 0
1539 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0
1540 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
1541 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1
1542
1543 /* STR_LEN: Define a string variable with a separate variable for storing the
1544  * data length. Unlike STR(), this can be used to store arbitrary binary data
1545  * (i.e., even nul termination character). */
1546 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
1547 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len)
1548 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
1549 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0
1550 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
1551
1552 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
1553  * explicitly specified. */
1554 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
1555 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
1556 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
1557
1558 #ifdef NO_CONFIG_WRITE
1559 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
1560 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0
1561 #else /* NO_CONFIG_WRITE */
1562 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1563         OFFSET(f), (void *) 0
1564 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1565         OFFSET(eap.f), (void *) 0
1566 #endif /* NO_CONFIG_WRITE */
1567
1568 /* INT: Define an integer variable */
1569 #define INT(f) _INT(f), NULL, NULL, 0
1570 #define INTe(f) _INTe(f), NULL, NULL, 0
1571
1572 /* INT_RANGE: Define an integer variable with allowed value range */
1573 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
1574
1575 /* FUNC: Define a configuration variable that uses a custom function for
1576  * parsing and writing the value. */
1577 #ifdef NO_CONFIG_WRITE
1578 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
1579 #else /* NO_CONFIG_WRITE */
1580 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
1581         NULL, NULL, NULL, NULL
1582 #endif /* NO_CONFIG_WRITE */
1583 #define FUNC(f) _FUNC(f), 0
1584 #define FUNC_KEY(f) _FUNC(f), 1
1585
1586 /*
1587  * Table of network configuration variables. This table is used to parse each
1588  * network configuration variable, e.g., each line in wpa_supplicant.conf file
1589  * that is inside a network block.
1590  *
1591  * This table is generated using the helper macros defined above and with
1592  * generous help from the C pre-processor. The field name is stored as a string
1593  * into .name and for STR and INT types, the offset of the target buffer within
1594  * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
1595  * offset to the field containing the length of the configuration variable.
1596  * .param3 and .param4 can be used to mark the allowed range (length for STR
1597  * and value for INT).
1598  *
1599  * For each configuration line in wpa_supplicant.conf, the parser goes through
1600  * this table and select the entry that matches with the field name. The parser
1601  * function (.parser) is then called to parse the actual value of the field.
1602  *
1603  * This kind of mechanism makes it easy to add new configuration parameters,
1604  * since only one line needs to be added into this table and into the
1605  * struct wpa_ssid definition if the new variable is either a string or
1606  * integer. More complex types will need to use their own parser and writer
1607  * functions.
1608  */
1609 static const struct parse_data ssid_fields[] = {
1610         { STR_RANGE(ssid, 0, MAX_SSID_LEN) },
1611         { INT_RANGE(scan_ssid, 0, 1) },
1612         { FUNC(bssid) },
1613         { FUNC_KEY(psk) },
1614         { FUNC(proto) },
1615         { FUNC(key_mgmt) },
1616         { INT(bg_scan_period) },
1617         { FUNC(pairwise) },
1618         { FUNC(group) },
1619         { FUNC(auth_alg) },
1620         { FUNC(scan_freq) },
1621         { FUNC(freq_list) },
1622 #ifdef IEEE8021X_EAPOL
1623         { FUNC(eap) },
1624         { STR_LENe(identity) },
1625         { STR_LENe(anonymous_identity) },
1626         { FUNC_KEY(password) },
1627         { STRe(ca_cert) },
1628         { STRe(ca_path) },
1629         { STRe(client_cert) },
1630         { STRe(private_key) },
1631         { STR_KEYe(private_key_passwd) },
1632         { STRe(dh_file) },
1633         { STRe(subject_match) },
1634         { STRe(altsubject_match) },
1635         { STRe(domain_suffix_match) },
1636         { STRe(ca_cert2) },
1637         { STRe(ca_path2) },
1638         { STRe(client_cert2) },
1639         { STRe(private_key2) },
1640         { STR_KEYe(private_key2_passwd) },
1641         { STRe(dh_file2) },
1642         { STRe(subject_match2) },
1643         { STRe(altsubject_match2) },
1644         { STRe(domain_suffix_match2) },
1645         { STRe(phase1) },
1646         { STRe(phase2) },
1647         { STRe(pcsc) },
1648         { STR_KEYe(pin) },
1649         { STRe(engine_id) },
1650         { STRe(key_id) },
1651         { STRe(cert_id) },
1652         { STRe(ca_cert_id) },
1653         { STR_KEYe(pin2) },
1654         { STRe(engine2_id) },
1655         { STRe(key2_id) },
1656         { STRe(cert2_id) },
1657         { STRe(ca_cert2_id) },
1658         { INTe(engine) },
1659         { INTe(engine2) },
1660         { INT(eapol_flags) },
1661 #endif /* IEEE8021X_EAPOL */
1662         { FUNC_KEY(wep_key0) },
1663         { FUNC_KEY(wep_key1) },
1664         { FUNC_KEY(wep_key2) },
1665         { FUNC_KEY(wep_key3) },
1666         { INT(wep_tx_keyidx) },
1667         { INT(priority) },
1668 #ifdef IEEE8021X_EAPOL
1669         { INT(eap_workaround) },
1670         { STRe(pac_file) },
1671         { INTe(fragment_size) },
1672         { INTe(ocsp) },
1673 #endif /* IEEE8021X_EAPOL */
1674         { INT_RANGE(mode, 0, 4) },
1675         { INT_RANGE(proactive_key_caching, 0, 1) },
1676         { INT_RANGE(disabled, 0, 2) },
1677         { STR(id_str) },
1678 #ifdef CONFIG_IEEE80211W
1679         { INT_RANGE(ieee80211w, 0, 2) },
1680 #endif /* CONFIG_IEEE80211W */
1681         { INT_RANGE(peerkey, 0, 1) },
1682         { INT_RANGE(mixed_cell, 0, 1) },
1683         { INT_RANGE(frequency, 0, 65000) },
1684         { INT(wpa_ptk_rekey) },
1685         { STR(bgscan) },
1686         { INT_RANGE(ignore_broadcast_ssid, 0, 2) },
1687 #ifdef CONFIG_P2P
1688         { FUNC(go_p2p_dev_addr) },
1689         { FUNC(p2p_client_list) },
1690         { FUNC(psk_list) },
1691 #endif /* CONFIG_P2P */
1692 #ifdef CONFIG_HT_OVERRIDES
1693         { INT_RANGE(disable_ht, 0, 1) },
1694         { INT_RANGE(disable_ht40, -1, 1) },
1695         { INT_RANGE(disable_sgi, 0, 1) },
1696         { INT_RANGE(disable_max_amsdu, -1, 1) },
1697         { INT_RANGE(ampdu_factor, -1, 3) },
1698         { INT_RANGE(ampdu_density, -1, 7) },
1699         { STR(ht_mcs) },
1700 #endif /* CONFIG_HT_OVERRIDES */
1701 #ifdef CONFIG_VHT_OVERRIDES
1702         { INT_RANGE(disable_vht, 0, 1) },
1703         { INT(vht_capa) },
1704         { INT(vht_capa_mask) },
1705         { INT_RANGE(vht_rx_mcs_nss_1, -1, 3) },
1706         { INT_RANGE(vht_rx_mcs_nss_2, -1, 3) },
1707         { INT_RANGE(vht_rx_mcs_nss_3, -1, 3) },
1708         { INT_RANGE(vht_rx_mcs_nss_4, -1, 3) },
1709         { INT_RANGE(vht_rx_mcs_nss_5, -1, 3) },
1710         { INT_RANGE(vht_rx_mcs_nss_6, -1, 3) },
1711         { INT_RANGE(vht_rx_mcs_nss_7, -1, 3) },
1712         { INT_RANGE(vht_rx_mcs_nss_8, -1, 3) },
1713         { INT_RANGE(vht_tx_mcs_nss_1, -1, 3) },
1714         { INT_RANGE(vht_tx_mcs_nss_2, -1, 3) },
1715         { INT_RANGE(vht_tx_mcs_nss_3, -1, 3) },
1716         { INT_RANGE(vht_tx_mcs_nss_4, -1, 3) },
1717         { INT_RANGE(vht_tx_mcs_nss_5, -1, 3) },
1718         { INT_RANGE(vht_tx_mcs_nss_6, -1, 3) },
1719         { INT_RANGE(vht_tx_mcs_nss_7, -1, 3) },
1720         { INT_RANGE(vht_tx_mcs_nss_8, -1, 3) },
1721 #endif /* CONFIG_VHT_OVERRIDES */
1722         { INT(ap_max_inactivity) },
1723         { INT(dtim_period) },
1724         { INT(beacon_int) },
1725 };
1726
1727 #undef OFFSET
1728 #undef _STR
1729 #undef STR
1730 #undef STR_KEY
1731 #undef _STR_LEN
1732 #undef STR_LEN
1733 #undef STR_LEN_KEY
1734 #undef _STR_RANGE
1735 #undef STR_RANGE
1736 #undef STR_RANGE_KEY
1737 #undef _INT
1738 #undef INT
1739 #undef INT_RANGE
1740 #undef _FUNC
1741 #undef FUNC
1742 #undef FUNC_KEY
1743 #define NUM_SSID_FIELDS ARRAY_SIZE(ssid_fields)
1744
1745
1746 /**
1747  * wpa_config_add_prio_network - Add a network to priority lists
1748  * @config: Configuration data from wpa_config_read()
1749  * @ssid: Pointer to the network configuration to be added to the list
1750  * Returns: 0 on success, -1 on failure
1751  *
1752  * This function is used to add a network block to the priority list of
1753  * networks. This must be called for each network when reading in the full
1754  * configuration. In addition, this can be used indirectly when updating
1755  * priorities by calling wpa_config_update_prio_list().
1756  */
1757 int wpa_config_add_prio_network(struct wpa_config *config,
1758                                 struct wpa_ssid *ssid)
1759 {
1760         int prio;
1761         struct wpa_ssid *prev, **nlist;
1762
1763         /*
1764          * Add to an existing priority list if one is available for the
1765          * configured priority level for this network.
1766          */
1767         for (prio = 0; prio < config->num_prio; prio++) {
1768                 prev = config->pssid[prio];
1769                 if (prev->priority == ssid->priority) {
1770                         while (prev->pnext)
1771                                 prev = prev->pnext;
1772                         prev->pnext = ssid;
1773                         return 0;
1774                 }
1775         }
1776
1777         /* First network for this priority - add a new priority list */
1778         nlist = os_realloc_array(config->pssid, config->num_prio + 1,
1779                                  sizeof(struct wpa_ssid *));
1780         if (nlist == NULL)
1781                 return -1;
1782
1783         for (prio = 0; prio < config->num_prio; prio++) {
1784                 if (nlist[prio]->priority < ssid->priority) {
1785                         os_memmove(&nlist[prio + 1], &nlist[prio],
1786                                    (config->num_prio - prio) *
1787                                    sizeof(struct wpa_ssid *));
1788                         break;
1789                 }
1790         }
1791
1792         nlist[prio] = ssid;
1793         config->num_prio++;
1794         config->pssid = nlist;
1795
1796         return 0;
1797 }
1798
1799
1800 /**
1801  * wpa_config_update_prio_list - Update network priority list
1802  * @config: Configuration data from wpa_config_read()
1803  * Returns: 0 on success, -1 on failure
1804  *
1805  * This function is called to update the priority list of networks in the
1806  * configuration when a network is being added or removed. This is also called
1807  * if a priority for a network is changed.
1808  */
1809 int wpa_config_update_prio_list(struct wpa_config *config)
1810 {
1811         struct wpa_ssid *ssid;
1812         int ret = 0;
1813
1814         os_free(config->pssid);
1815         config->pssid = NULL;
1816         config->num_prio = 0;
1817
1818         ssid = config->ssid;
1819         while (ssid) {
1820                 ssid->pnext = NULL;
1821                 if (wpa_config_add_prio_network(config, ssid) < 0)
1822                         ret = -1;
1823                 ssid = ssid->next;
1824         }
1825
1826         return ret;
1827 }
1828
1829
1830 #ifdef IEEE8021X_EAPOL
1831 static void eap_peer_config_free(struct eap_peer_config *eap)
1832 {
1833         os_free(eap->eap_methods);
1834         os_free(eap->identity);
1835         os_free(eap->anonymous_identity);
1836         os_free(eap->password);
1837         os_free(eap->ca_cert);
1838         os_free(eap->ca_path);
1839         os_free(eap->client_cert);
1840         os_free(eap->private_key);
1841         os_free(eap->private_key_passwd);
1842         os_free(eap->dh_file);
1843         os_free(eap->subject_match);
1844         os_free(eap->altsubject_match);
1845         os_free(eap->domain_suffix_match);
1846         os_free(eap->ca_cert2);
1847         os_free(eap->ca_path2);
1848         os_free(eap->client_cert2);
1849         os_free(eap->private_key2);
1850         os_free(eap->private_key2_passwd);
1851         os_free(eap->dh_file2);
1852         os_free(eap->subject_match2);
1853         os_free(eap->altsubject_match2);
1854         os_free(eap->domain_suffix_match2);
1855         os_free(eap->phase1);
1856         os_free(eap->phase2);
1857         os_free(eap->pcsc);
1858         os_free(eap->pin);
1859         os_free(eap->engine_id);
1860         os_free(eap->key_id);
1861         os_free(eap->cert_id);
1862         os_free(eap->ca_cert_id);
1863         os_free(eap->key2_id);
1864         os_free(eap->cert2_id);
1865         os_free(eap->ca_cert2_id);
1866         os_free(eap->pin2);
1867         os_free(eap->engine2_id);
1868         os_free(eap->otp);
1869         os_free(eap->pending_req_otp);
1870         os_free(eap->pac_file);
1871         os_free(eap->new_password);
1872         os_free(eap->external_sim_resp);
1873 }
1874 #endif /* IEEE8021X_EAPOL */
1875
1876
1877 /**
1878  * wpa_config_free_ssid - Free network/ssid configuration data
1879  * @ssid: Configuration data for the network
1880  *
1881  * This function frees all resources allocated for the network configuration
1882  * data.
1883  */
1884 void wpa_config_free_ssid(struct wpa_ssid *ssid)
1885 {
1886         struct psk_list_entry *psk;
1887
1888         os_free(ssid->ssid);
1889         os_free(ssid->passphrase);
1890         os_free(ssid->ext_psk);
1891 #ifdef IEEE8021X_EAPOL
1892         eap_peer_config_free(&ssid->eap);
1893 #endif /* IEEE8021X_EAPOL */
1894         os_free(ssid->id_str);
1895         os_free(ssid->scan_freq);
1896         os_free(ssid->freq_list);
1897         os_free(ssid->bgscan);
1898         os_free(ssid->p2p_client_list);
1899 #ifdef CONFIG_HT_OVERRIDES
1900         os_free(ssid->ht_mcs);
1901 #endif /* CONFIG_HT_OVERRIDES */
1902         while ((psk = dl_list_first(&ssid->psk_list, struct psk_list_entry,
1903                                     list))) {
1904                 dl_list_del(&psk->list);
1905                 os_free(psk);
1906         }
1907         os_free(ssid);
1908 }
1909
1910
1911 void wpa_config_free_cred(struct wpa_cred *cred)
1912 {
1913         size_t i;
1914
1915         os_free(cred->realm);
1916         os_free(cred->username);
1917         os_free(cred->password);
1918         os_free(cred->ca_cert);
1919         os_free(cred->client_cert);
1920         os_free(cred->private_key);
1921         os_free(cred->private_key_passwd);
1922         os_free(cred->imsi);
1923         os_free(cred->milenage);
1924         for (i = 0; i < cred->num_domain; i++)
1925                 os_free(cred->domain[i]);
1926         os_free(cred->domain);
1927         os_free(cred->domain_suffix_match);
1928         os_free(cred->eap_method);
1929         os_free(cred->phase1);
1930         os_free(cred->phase2);
1931         os_free(cred->excluded_ssid);
1932         os_free(cred->roaming_partner);
1933         os_free(cred->provisioning_sp);
1934         os_free(cred);
1935 }
1936
1937
1938 void wpa_config_flush_blobs(struct wpa_config *config)
1939 {
1940 #ifndef CONFIG_NO_CONFIG_BLOBS
1941         struct wpa_config_blob *blob, *prev;
1942
1943         blob = config->blobs;
1944         config->blobs = NULL;
1945         while (blob) {
1946                 prev = blob;
1947                 blob = blob->next;
1948                 wpa_config_free_blob(prev);
1949         }
1950 #endif /* CONFIG_NO_CONFIG_BLOBS */
1951 }
1952
1953
1954 /**
1955  * wpa_config_free - Free configuration data
1956  * @config: Configuration data from wpa_config_read()
1957  *
1958  * This function frees all resources allocated for the configuration data by
1959  * wpa_config_read().
1960  */
1961 void wpa_config_free(struct wpa_config *config)
1962 {
1963         struct wpa_ssid *ssid, *prev = NULL;
1964         struct wpa_cred *cred, *cprev;
1965
1966         ssid = config->ssid;
1967         while (ssid) {
1968                 prev = ssid;
1969                 ssid = ssid->next;
1970                 wpa_config_free_ssid(prev);
1971         }
1972
1973         cred = config->cred;
1974         while (cred) {
1975                 cprev = cred;
1976                 cred = cred->next;
1977                 wpa_config_free_cred(cprev);
1978         }
1979
1980         wpa_config_flush_blobs(config);
1981
1982         wpabuf_free(config->wps_vendor_ext_m1);
1983         os_free(config->ctrl_interface);
1984         os_free(config->ctrl_interface_group);
1985         os_free(config->opensc_engine_path);
1986         os_free(config->pkcs11_engine_path);
1987         os_free(config->pkcs11_module_path);
1988         os_free(config->pcsc_reader);
1989         os_free(config->pcsc_pin);
1990         os_free(config->driver_param);
1991         os_free(config->device_name);
1992         os_free(config->manufacturer);
1993         os_free(config->model_name);
1994         os_free(config->model_number);
1995         os_free(config->serial_number);
1996         os_free(config->config_methods);
1997         os_free(config->p2p_ssid_postfix);
1998         os_free(config->pssid);
1999         os_free(config->p2p_pref_chan);
2000         os_free(config->p2p_no_go_freq.range);
2001         os_free(config->autoscan);
2002         os_free(config->freq_list);
2003         wpabuf_free(config->wps_nfc_dh_pubkey);
2004         wpabuf_free(config->wps_nfc_dh_privkey);
2005         wpabuf_free(config->wps_nfc_dev_pw);
2006         os_free(config->ext_password_backend);
2007         os_free(config->sae_groups);
2008         wpabuf_free(config->ap_vendor_elements);
2009         os_free(config->osu_dir);
2010         os_free(config);
2011 }
2012
2013
2014 /**
2015  * wpa_config_foreach_network - Iterate over each configured network
2016  * @config: Configuration data from wpa_config_read()
2017  * @func: Callback function to process each network
2018  * @arg: Opaque argument to pass to callback function
2019  *
2020  * Iterate over the set of configured networks calling the specified
2021  * function for each item. We guard against callbacks removing the
2022  * supplied network.
2023  */
2024 void wpa_config_foreach_network(struct wpa_config *config,
2025                                 void (*func)(void *, struct wpa_ssid *),
2026                                 void *arg)
2027 {
2028         struct wpa_ssid *ssid, *next;
2029
2030         ssid = config->ssid;
2031         while (ssid) {
2032                 next = ssid->next;
2033                 func(arg, ssid);
2034                 ssid = next;
2035         }
2036 }
2037
2038
2039 /**
2040  * wpa_config_get_network - Get configured network based on id
2041  * @config: Configuration data from wpa_config_read()
2042  * @id: Unique network id to search for
2043  * Returns: Network configuration or %NULL if not found
2044  */
2045 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
2046 {
2047         struct wpa_ssid *ssid;
2048
2049         ssid = config->ssid;
2050         while (ssid) {
2051                 if (id == ssid->id)
2052                         break;
2053                 ssid = ssid->next;
2054         }
2055
2056         return ssid;
2057 }
2058
2059
2060 /**
2061  * wpa_config_add_network - Add a new network with empty configuration
2062  * @config: Configuration data from wpa_config_read()
2063  * Returns: The new network configuration or %NULL if operation failed
2064  */
2065 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
2066 {
2067         int id;
2068         struct wpa_ssid *ssid, *last = NULL;
2069
2070         id = -1;
2071         ssid = config->ssid;
2072         while (ssid) {
2073                 if (ssid->id > id)
2074                         id = ssid->id;
2075                 last = ssid;
2076                 ssid = ssid->next;
2077         }
2078         id++;
2079
2080         ssid = os_zalloc(sizeof(*ssid));
2081         if (ssid == NULL)
2082                 return NULL;
2083         ssid->id = id;
2084         dl_list_init(&ssid->psk_list);
2085         if (last)
2086                 last->next = ssid;
2087         else
2088                 config->ssid = ssid;
2089
2090         wpa_config_update_prio_list(config);
2091
2092         return ssid;
2093 }
2094
2095
2096 /**
2097  * wpa_config_remove_network - Remove a configured network based on id
2098  * @config: Configuration data from wpa_config_read()
2099  * @id: Unique network id to search for
2100  * Returns: 0 on success, or -1 if the network was not found
2101  */
2102 int wpa_config_remove_network(struct wpa_config *config, int id)
2103 {
2104         struct wpa_ssid *ssid, *prev = NULL;
2105
2106         ssid = config->ssid;
2107         while (ssid) {
2108                 if (id == ssid->id)
2109                         break;
2110                 prev = ssid;
2111                 ssid = ssid->next;
2112         }
2113
2114         if (ssid == NULL)
2115                 return -1;
2116
2117         if (prev)
2118                 prev->next = ssid->next;
2119         else
2120                 config->ssid = ssid->next;
2121
2122         wpa_config_update_prio_list(config);
2123         wpa_config_free_ssid(ssid);
2124         return 0;
2125 }
2126
2127
2128 /**
2129  * wpa_config_set_network_defaults - Set network default values
2130  * @ssid: Pointer to network configuration data
2131  */
2132 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
2133 {
2134         ssid->proto = DEFAULT_PROTO;
2135         ssid->pairwise_cipher = DEFAULT_PAIRWISE;
2136         ssid->group_cipher = DEFAULT_GROUP;
2137         ssid->key_mgmt = DEFAULT_KEY_MGMT;
2138         ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
2139 #ifdef IEEE8021X_EAPOL
2140         ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
2141         ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
2142         ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
2143 #endif /* IEEE8021X_EAPOL */
2144 #ifdef CONFIG_HT_OVERRIDES
2145         ssid->disable_ht = DEFAULT_DISABLE_HT;
2146         ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
2147         ssid->disable_sgi = DEFAULT_DISABLE_SGI;
2148         ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
2149         ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
2150         ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
2151 #endif /* CONFIG_HT_OVERRIDES */
2152 #ifdef CONFIG_VHT_OVERRIDES
2153         ssid->vht_rx_mcs_nss_1 = -1;
2154         ssid->vht_rx_mcs_nss_2 = -1;
2155         ssid->vht_rx_mcs_nss_3 = -1;
2156         ssid->vht_rx_mcs_nss_4 = -1;
2157         ssid->vht_rx_mcs_nss_5 = -1;
2158         ssid->vht_rx_mcs_nss_6 = -1;
2159         ssid->vht_rx_mcs_nss_7 = -1;
2160         ssid->vht_rx_mcs_nss_8 = -1;
2161         ssid->vht_tx_mcs_nss_1 = -1;
2162         ssid->vht_tx_mcs_nss_2 = -1;
2163         ssid->vht_tx_mcs_nss_3 = -1;
2164         ssid->vht_tx_mcs_nss_4 = -1;
2165         ssid->vht_tx_mcs_nss_5 = -1;
2166         ssid->vht_tx_mcs_nss_6 = -1;
2167         ssid->vht_tx_mcs_nss_7 = -1;
2168         ssid->vht_tx_mcs_nss_8 = -1;
2169 #endif /* CONFIG_VHT_OVERRIDES */
2170         ssid->proactive_key_caching = -1;
2171 #ifdef CONFIG_IEEE80211W
2172         ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
2173 #endif /* CONFIG_IEEE80211W */
2174 }
2175
2176
2177 /**
2178  * wpa_config_set - Set a variable in network configuration
2179  * @ssid: Pointer to network configuration data
2180  * @var: Variable name, e.g., "ssid"
2181  * @value: Variable value
2182  * @line: Line number in configuration file or 0 if not used
2183  * Returns: 0 on success, -1 on failure
2184  *
2185  * This function can be used to set network configuration variables based on
2186  * both the configuration file and management interface input. The value
2187  * parameter must be in the same format as the text-based configuration file is
2188  * using. For example, strings are using double quotation marks.
2189  */
2190 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
2191                    int line)
2192 {
2193         size_t i;
2194         int ret = 0;
2195
2196         if (ssid == NULL || var == NULL || value == NULL)
2197                 return -1;
2198
2199         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2200                 const struct parse_data *field = &ssid_fields[i];
2201                 if (os_strcmp(var, field->name) != 0)
2202                         continue;
2203
2204                 if (field->parser(field, ssid, line, value)) {
2205                         if (line) {
2206                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
2207                                            "parse %s '%s'.", line, var, value);
2208                         }
2209                         ret = -1;
2210                 }
2211                 break;
2212         }
2213         if (i == NUM_SSID_FIELDS) {
2214                 if (line) {
2215                         wpa_printf(MSG_ERROR, "Line %d: unknown network field "
2216                                    "'%s'.", line, var);
2217                 }
2218                 ret = -1;
2219         }
2220
2221         return ret;
2222 }
2223
2224
2225 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
2226                           const char *value)
2227 {
2228         size_t len;
2229         char *buf;
2230         int ret;
2231
2232         len = os_strlen(value);
2233         buf = os_malloc(len + 3);
2234         if (buf == NULL)
2235                 return -1;
2236         buf[0] = '"';
2237         os_memcpy(buf + 1, value, len);
2238         buf[len + 1] = '"';
2239         buf[len + 2] = '\0';
2240         ret = wpa_config_set(ssid, var, buf, 0);
2241         os_free(buf);
2242         return ret;
2243 }
2244
2245
2246 /**
2247  * wpa_config_get_all - Get all options from network configuration
2248  * @ssid: Pointer to network configuration data
2249  * @get_keys: Determines if keys/passwords will be included in returned list
2250  *      (if they may be exported)
2251  * Returns: %NULL terminated list of all set keys and their values in the form
2252  * of [key1, val1, key2, val2, ... , NULL]
2253  *
2254  * This function can be used to get list of all configured network properties.
2255  * The caller is responsible for freeing the returned list and all its
2256  * elements.
2257  */
2258 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
2259 {
2260         const struct parse_data *field;
2261         char *key, *value;
2262         size_t i;
2263         char **props;
2264         int fields_num;
2265
2266         get_keys = get_keys && ssid->export_keys;
2267
2268         props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
2269         if (!props)
2270                 return NULL;
2271
2272         fields_num = 0;
2273         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2274                 field = &ssid_fields[i];
2275                 if (field->key_data && !get_keys)
2276                         continue;
2277                 value = field->writer(field, ssid);
2278                 if (value == NULL)
2279                         continue;
2280                 if (os_strlen(value) == 0) {
2281                         os_free(value);
2282                         continue;
2283                 }
2284
2285                 key = os_strdup(field->name);
2286                 if (key == NULL) {
2287                         os_free(value);
2288                         goto err;
2289                 }
2290
2291                 props[fields_num * 2] = key;
2292                 props[fields_num * 2 + 1] = value;
2293
2294                 fields_num++;
2295         }
2296
2297         return props;
2298
2299 err:
2300         value = *props;
2301         while (value)
2302                 os_free(value++);
2303         os_free(props);
2304         return NULL;
2305 }
2306
2307
2308 #ifndef NO_CONFIG_WRITE
2309 /**
2310  * wpa_config_get - Get a variable in network configuration
2311  * @ssid: Pointer to network configuration data
2312  * @var: Variable name, e.g., "ssid"
2313  * Returns: Value of the variable or %NULL on failure
2314  *
2315  * This function can be used to get network configuration variables. The
2316  * returned value is a copy of the configuration variable in text format, i.e,.
2317  * the same format that the text-based configuration file and wpa_config_set()
2318  * are using for the value. The caller is responsible for freeing the returned
2319  * value.
2320  */
2321 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
2322 {
2323         size_t i;
2324
2325         if (ssid == NULL || var == NULL)
2326                 return NULL;
2327
2328         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2329                 const struct parse_data *field = &ssid_fields[i];
2330                 if (os_strcmp(var, field->name) == 0)
2331                         return field->writer(field, ssid);
2332         }
2333
2334         return NULL;
2335 }
2336
2337
2338 /**
2339  * wpa_config_get_no_key - Get a variable in network configuration (no keys)
2340  * @ssid: Pointer to network configuration data
2341  * @var: Variable name, e.g., "ssid"
2342  * Returns: Value of the variable or %NULL on failure
2343  *
2344  * This function can be used to get network configuration variable like
2345  * wpa_config_get(). The only difference is that this functions does not expose
2346  * key/password material from the configuration. In case a key/password field
2347  * is requested, the returned value is an empty string or %NULL if the variable
2348  * is not set or "*" if the variable is set (regardless of its value). The
2349  * returned value is a copy of the configuration variable in text format, i.e,.
2350  * the same format that the text-based configuration file and wpa_config_set()
2351  * are using for the value. The caller is responsible for freeing the returned
2352  * value.
2353  */
2354 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
2355 {
2356         size_t i;
2357
2358         if (ssid == NULL || var == NULL)
2359                 return NULL;
2360
2361         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2362                 const struct parse_data *field = &ssid_fields[i];
2363                 if (os_strcmp(var, field->name) == 0) {
2364                         char *res = field->writer(field, ssid);
2365                         if (field->key_data) {
2366                                 if (res && res[0]) {
2367                                         wpa_printf(MSG_DEBUG, "Do not allow "
2368                                                    "key_data field to be "
2369                                                    "exposed");
2370                                         os_free(res);
2371                                         return os_strdup("*");
2372                                 }
2373
2374                                 os_free(res);
2375                                 return NULL;
2376                         }
2377                         return res;
2378                 }
2379         }
2380
2381         return NULL;
2382 }
2383 #endif /* NO_CONFIG_WRITE */
2384
2385
2386 /**
2387  * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
2388  * @ssid: Pointer to network configuration data
2389  *
2390  * This function must be called to update WPA PSK when either SSID or the
2391  * passphrase has changed for the network configuration.
2392  */
2393 void wpa_config_update_psk(struct wpa_ssid *ssid)
2394 {
2395 #ifndef CONFIG_NO_PBKDF2
2396         pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
2397                     ssid->psk, PMK_LEN);
2398         wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
2399                         ssid->psk, PMK_LEN);
2400         ssid->psk_set = 1;
2401 #endif /* CONFIG_NO_PBKDF2 */
2402 }
2403
2404
2405 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
2406                         const char *value, int line)
2407 {
2408         char *val;
2409         size_t len;
2410
2411         if (os_strcmp(var, "temporary") == 0) {
2412                 cred->temporary = atoi(value);
2413                 return 0;
2414         }
2415
2416         if (os_strcmp(var, "priority") == 0) {
2417                 cred->priority = atoi(value);
2418                 return 0;
2419         }
2420
2421         if (os_strcmp(var, "pcsc") == 0) {
2422                 cred->pcsc = atoi(value);
2423                 return 0;
2424         }
2425
2426         if (os_strcmp(var, "eap") == 0) {
2427                 struct eap_method_type method;
2428                 method.method = eap_peer_get_type(value, &method.vendor);
2429                 if (method.vendor == EAP_VENDOR_IETF &&
2430                     method.method == EAP_TYPE_NONE) {
2431                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
2432                                    "for a credential", line, value);
2433                         return -1;
2434                 }
2435                 os_free(cred->eap_method);
2436                 cred->eap_method = os_malloc(sizeof(*cred->eap_method));
2437                 if (cred->eap_method == NULL)
2438                         return -1;
2439                 os_memcpy(cred->eap_method, &method, sizeof(method));
2440                 return 0;
2441         }
2442
2443         if (os_strcmp(var, "password") == 0 &&
2444             os_strncmp(value, "ext:", 4) == 0) {
2445                 os_free(cred->password);
2446                 cred->password = os_strdup(value);
2447                 cred->ext_password = 1;
2448                 return 0;
2449         }
2450
2451         if (os_strcmp(var, "update_identifier") == 0) {
2452                 cred->update_identifier = atoi(value);
2453                 return 0;
2454         }
2455
2456         if (os_strcmp(var, "min_dl_bandwidth_home") == 0) {
2457                 cred->min_dl_bandwidth_home = atoi(value);
2458                 return 0;
2459         }
2460
2461         if (os_strcmp(var, "min_ul_bandwidth_home") == 0) {
2462                 cred->min_ul_bandwidth_home = atoi(value);
2463                 return 0;
2464         }
2465
2466         if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0) {
2467                 cred->min_dl_bandwidth_roaming = atoi(value);
2468                 return 0;
2469         }
2470
2471         if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0) {
2472                 cred->min_ul_bandwidth_roaming = atoi(value);
2473                 return 0;
2474         }
2475
2476         val = wpa_config_parse_string(value, &len);
2477         if (val == NULL) {
2478                 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
2479                            "value '%s'.", line, var, value);
2480                 return -1;
2481         }
2482
2483         if (os_strcmp(var, "realm") == 0) {
2484                 os_free(cred->realm);
2485                 cred->realm = val;
2486                 return 0;
2487         }
2488
2489         if (os_strcmp(var, "username") == 0) {
2490                 os_free(cred->username);
2491                 cred->username = val;
2492                 return 0;
2493         }
2494
2495         if (os_strcmp(var, "password") == 0) {
2496                 os_free(cred->password);
2497                 cred->password = val;
2498                 cred->ext_password = 0;
2499                 return 0;
2500         }
2501
2502         if (os_strcmp(var, "ca_cert") == 0) {
2503                 os_free(cred->ca_cert);
2504                 cred->ca_cert = val;
2505                 return 0;
2506         }
2507
2508         if (os_strcmp(var, "client_cert") == 0) {
2509                 os_free(cred->client_cert);
2510                 cred->client_cert = val;
2511                 return 0;
2512         }
2513
2514         if (os_strcmp(var, "private_key") == 0) {
2515                 os_free(cred->private_key);
2516                 cred->private_key = val;
2517                 return 0;
2518         }
2519
2520         if (os_strcmp(var, "private_key_passwd") == 0) {
2521                 os_free(cred->private_key_passwd);
2522                 cred->private_key_passwd = val;
2523                 return 0;
2524         }
2525
2526         if (os_strcmp(var, "imsi") == 0) {
2527                 os_free(cred->imsi);
2528                 cred->imsi = val;
2529                 return 0;
2530         }
2531
2532         if (os_strcmp(var, "milenage") == 0) {
2533                 os_free(cred->milenage);
2534                 cred->milenage = val;
2535                 return 0;
2536         }
2537
2538         if (os_strcmp(var, "domain_suffix_match") == 0) {
2539                 os_free(cred->domain_suffix_match);
2540                 cred->domain_suffix_match = val;
2541                 return 0;
2542         }
2543
2544         if (os_strcmp(var, "domain") == 0) {
2545                 char **new_domain;
2546                 new_domain = os_realloc_array(cred->domain,
2547                                               cred->num_domain + 1,
2548                                               sizeof(char *));
2549                 if (new_domain == NULL) {
2550                         os_free(val);
2551                         return -1;
2552                 }
2553                 new_domain[cred->num_domain++] = val;
2554                 cred->domain = new_domain;
2555                 return 0;
2556         }
2557
2558         if (os_strcmp(var, "phase1") == 0) {
2559                 os_free(cred->phase1);
2560                 cred->phase1 = val;
2561                 return 0;
2562         }
2563
2564         if (os_strcmp(var, "phase2") == 0) {
2565                 os_free(cred->phase2);
2566                 cred->phase2 = val;
2567                 return 0;
2568         }
2569
2570         if (os_strcmp(var, "roaming_consortium") == 0) {
2571                 if (len < 3 || len > sizeof(cred->roaming_consortium)) {
2572                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2573                                    "roaming_consortium length %d (3..15 "
2574                                    "expected)", line, (int) len);
2575                         os_free(val);
2576                         return -1;
2577                 }
2578                 os_memcpy(cred->roaming_consortium, val, len);
2579                 cred->roaming_consortium_len = len;
2580                 os_free(val);
2581                 return 0;
2582         }
2583
2584         if (os_strcmp(var, "required_roaming_consortium") == 0) {
2585                 if (len < 3 || len > sizeof(cred->required_roaming_consortium))
2586                 {
2587                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2588                                    "required_roaming_consortium length %d "
2589                                    "(3..15 expected)", line, (int) len);
2590                         os_free(val);
2591                         return -1;
2592                 }
2593                 os_memcpy(cred->required_roaming_consortium, val, len);
2594                 cred->required_roaming_consortium_len = len;
2595                 os_free(val);
2596                 return 0;
2597         }
2598
2599         if (os_strcmp(var, "excluded_ssid") == 0) {
2600                 struct excluded_ssid *e;
2601
2602                 if (len > MAX_SSID_LEN) {
2603                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2604                                    "excluded_ssid length %d", line, (int) len);
2605                         os_free(val);
2606                         return -1;
2607                 }
2608
2609                 e = os_realloc_array(cred->excluded_ssid,
2610                                      cred->num_excluded_ssid + 1,
2611                                      sizeof(struct excluded_ssid));
2612                 if (e == NULL) {
2613                         os_free(val);
2614                         return -1;
2615                 }
2616                 cred->excluded_ssid = e;
2617
2618                 e = &cred->excluded_ssid[cred->num_excluded_ssid++];
2619                 os_memcpy(e->ssid, val, len);
2620                 e->ssid_len = len;
2621
2622                 os_free(val);
2623
2624                 return 0;
2625         }
2626
2627         if (os_strcmp(var, "roaming_partner") == 0) {
2628                 struct roaming_partner *p;
2629                 char *pos;
2630
2631                 p = os_realloc_array(cred->roaming_partner,
2632                                      cred->num_roaming_partner + 1,
2633                                      sizeof(struct roaming_partner));
2634                 if (p == NULL) {
2635                         os_free(val);
2636                         return -1;
2637                 }
2638                 cred->roaming_partner = p;
2639
2640                 p = &cred->roaming_partner[cred->num_roaming_partner];
2641
2642                 pos = os_strchr(val, ',');
2643                 if (pos == NULL) {
2644                         os_free(val);
2645                         return -1;
2646                 }
2647                 *pos++ = '\0';
2648                 if (pos - val - 1 >= (int) sizeof(p->fqdn)) {
2649                         os_free(val);
2650                         return -1;
2651                 }
2652                 os_memcpy(p->fqdn, val, pos - val);
2653
2654                 p->exact_match = atoi(pos);
2655
2656                 pos = os_strchr(pos, ',');
2657                 if (pos == NULL) {
2658                         os_free(val);
2659                         return -1;
2660                 }
2661                 *pos++ = '\0';
2662
2663                 p->priority = atoi(pos);
2664
2665                 pos = os_strchr(pos, ',');
2666                 if (pos == NULL) {
2667                         os_free(val);
2668                         return -1;
2669                 }
2670                 *pos++ = '\0';
2671
2672                 if (os_strlen(pos) >= sizeof(p->country)) {
2673                         os_free(val);
2674                         return -1;
2675                 }
2676                 os_memcpy(p->country, pos, os_strlen(pos) + 1);
2677
2678                 cred->num_roaming_partner++;
2679                 os_free(val);
2680
2681                 return 0;
2682         }
2683
2684         if (os_strcmp(var, "provisioning_sp") == 0) {
2685                 os_free(cred->provisioning_sp);
2686                 cred->provisioning_sp = val;
2687                 return 0;
2688         }
2689
2690         if (line) {
2691                 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
2692                            line, var);
2693         }
2694
2695         os_free(val);
2696
2697         return -1;
2698 }
2699
2700
2701 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
2702 {
2703         struct wpa_cred *cred;
2704
2705         cred = config->cred;
2706         while (cred) {
2707                 if (id == cred->id)
2708                         break;
2709                 cred = cred->next;
2710         }
2711
2712         return cred;
2713 }
2714
2715
2716 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
2717 {
2718         int id;
2719         struct wpa_cred *cred, *last = NULL;
2720
2721         id = -1;
2722         cred = config->cred;
2723         while (cred) {
2724                 if (cred->id > id)
2725                         id = cred->id;
2726                 last = cred;
2727                 cred = cred->next;
2728         }
2729         id++;
2730
2731         cred = os_zalloc(sizeof(*cred));
2732         if (cred == NULL)
2733                 return NULL;
2734         cred->id = id;
2735         if (last)
2736                 last->next = cred;
2737         else
2738                 config->cred = cred;
2739
2740         return cred;
2741 }
2742
2743
2744 int wpa_config_remove_cred(struct wpa_config *config, int id)
2745 {
2746         struct wpa_cred *cred, *prev = NULL;
2747
2748         cred = config->cred;
2749         while (cred) {
2750                 if (id == cred->id)
2751                         break;
2752                 prev = cred;
2753                 cred = cred->next;
2754         }
2755
2756         if (cred == NULL)
2757                 return -1;
2758
2759         if (prev)
2760                 prev->next = cred->next;
2761         else
2762                 config->cred = cred->next;
2763
2764         wpa_config_free_cred(cred);
2765         return 0;
2766 }
2767
2768
2769 #ifndef CONFIG_NO_CONFIG_BLOBS
2770 /**
2771  * wpa_config_get_blob - Get a named configuration blob
2772  * @config: Configuration data from wpa_config_read()
2773  * @name: Name of the blob
2774  * Returns: Pointer to blob data or %NULL if not found
2775  */
2776 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
2777                                                    const char *name)
2778 {
2779         struct wpa_config_blob *blob = config->blobs;
2780
2781         while (blob) {
2782                 if (os_strcmp(blob->name, name) == 0)
2783                         return blob;
2784                 blob = blob->next;
2785         }
2786         return NULL;
2787 }
2788
2789
2790 /**
2791  * wpa_config_set_blob - Set or add a named configuration blob
2792  * @config: Configuration data from wpa_config_read()
2793  * @blob: New value for the blob
2794  *
2795  * Adds a new configuration blob or replaces the current value of an existing
2796  * blob.
2797  */
2798 void wpa_config_set_blob(struct wpa_config *config,
2799                          struct wpa_config_blob *blob)
2800 {
2801         wpa_config_remove_blob(config, blob->name);
2802         blob->next = config->blobs;
2803         config->blobs = blob;
2804 }
2805
2806
2807 /**
2808  * wpa_config_free_blob - Free blob data
2809  * @blob: Pointer to blob to be freed
2810  */
2811 void wpa_config_free_blob(struct wpa_config_blob *blob)
2812 {
2813         if (blob) {
2814                 os_free(blob->name);
2815                 os_free(blob->data);
2816                 os_free(blob);
2817         }
2818 }
2819
2820
2821 /**
2822  * wpa_config_remove_blob - Remove a named configuration blob
2823  * @config: Configuration data from wpa_config_read()
2824  * @name: Name of the blob to remove
2825  * Returns: 0 if blob was removed or -1 if blob was not found
2826  */
2827 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
2828 {
2829         struct wpa_config_blob *pos = config->blobs, *prev = NULL;
2830
2831         while (pos) {
2832                 if (os_strcmp(pos->name, name) == 0) {
2833                         if (prev)
2834                                 prev->next = pos->next;
2835                         else
2836                                 config->blobs = pos->next;
2837                         wpa_config_free_blob(pos);
2838                         return 0;
2839                 }
2840                 prev = pos;
2841                 pos = pos->next;
2842         }
2843
2844         return -1;
2845 }
2846 #endif /* CONFIG_NO_CONFIG_BLOBS */
2847
2848
2849 /**
2850  * wpa_config_alloc_empty - Allocate an empty configuration
2851  * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
2852  * socket
2853  * @driver_param: Driver parameters
2854  * Returns: Pointer to allocated configuration data or %NULL on failure
2855  */
2856 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
2857                                            const char *driver_param)
2858 {
2859         struct wpa_config *config;
2860         const int aCWmin = 4, aCWmax = 10;
2861         const struct hostapd_wmm_ac_params ac_bk =
2862                 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
2863         const struct hostapd_wmm_ac_params ac_be =
2864                 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
2865         const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
2866                 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
2867         const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
2868                 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
2869
2870         config = os_zalloc(sizeof(*config));
2871         if (config == NULL)
2872                 return NULL;
2873         config->eapol_version = DEFAULT_EAPOL_VERSION;
2874         config->ap_scan = DEFAULT_AP_SCAN;
2875         config->fast_reauth = DEFAULT_FAST_REAUTH;
2876         config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
2877         config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
2878         config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
2879         config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
2880         config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
2881         config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
2882         config->max_num_sta = DEFAULT_MAX_NUM_STA;
2883         config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
2884         config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
2885         config->wmm_ac_params[0] = ac_be;
2886         config->wmm_ac_params[1] = ac_bk;
2887         config->wmm_ac_params[2] = ac_vi;
2888         config->wmm_ac_params[3] = ac_vo;
2889
2890         if (ctrl_interface)
2891                 config->ctrl_interface = os_strdup(ctrl_interface);
2892         if (driver_param)
2893                 config->driver_param = os_strdup(driver_param);
2894
2895         return config;
2896 }
2897
2898
2899 #ifndef CONFIG_NO_STDOUT_DEBUG
2900 /**
2901  * wpa_config_debug_dump_networks - Debug dump of configured networks
2902  * @config: Configuration data from wpa_config_read()
2903  */
2904 void wpa_config_debug_dump_networks(struct wpa_config *config)
2905 {
2906         int prio;
2907         struct wpa_ssid *ssid;
2908
2909         for (prio = 0; prio < config->num_prio; prio++) {
2910                 ssid = config->pssid[prio];
2911                 wpa_printf(MSG_DEBUG, "Priority group %d",
2912                            ssid->priority);
2913                 while (ssid) {
2914                         wpa_printf(MSG_DEBUG, "   id=%d ssid='%s'",
2915                                    ssid->id,
2916                                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2917                         ssid = ssid->pnext;
2918                 }
2919         }
2920 }
2921 #endif /* CONFIG_NO_STDOUT_DEBUG */
2922
2923
2924 struct global_parse_data {
2925         char *name;
2926         int (*parser)(const struct global_parse_data *data,
2927                       struct wpa_config *config, int line, const char *value);
2928         void *param1, *param2, *param3;
2929         unsigned int changed_flag;
2930 };
2931
2932
2933 static int wpa_global_config_parse_int(const struct global_parse_data *data,
2934                                        struct wpa_config *config, int line,
2935                                        const char *pos)
2936 {
2937         int val, *dst;
2938         char *end;
2939
2940         dst = (int *) (((u8 *) config) + (long) data->param1);
2941         val = strtol(pos, &end, 0);
2942         if (*end) {
2943                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
2944                            line, pos);
2945                 return -1;
2946         }
2947         *dst = val;
2948
2949         wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
2950
2951         if (data->param2 && *dst < (long) data->param2) {
2952                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
2953                            "min_value=%ld)", line, data->name, *dst,
2954                            (long) data->param2);
2955                 *dst = (long) data->param2;
2956                 return -1;
2957         }
2958
2959         if (data->param3 && *dst > (long) data->param3) {
2960                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
2961                            "max_value=%ld)", line, data->name, *dst,
2962                            (long) data->param3);
2963                 *dst = (long) data->param3;
2964                 return -1;
2965         }
2966
2967         return 0;
2968 }
2969
2970
2971 static int wpa_global_config_parse_str(const struct global_parse_data *data,
2972                                        struct wpa_config *config, int line,
2973                                        const char *pos)
2974 {
2975         size_t len;
2976         char **dst, *tmp;
2977
2978         len = os_strlen(pos);
2979         if (data->param2 && len < (size_t) data->param2) {
2980                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
2981                            "min_len=%ld)", line, data->name,
2982                            (unsigned long) len, (long) data->param2);
2983                 return -1;
2984         }
2985
2986         if (data->param3 && len > (size_t) data->param3) {
2987                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
2988                            "max_len=%ld)", line, data->name,
2989                            (unsigned long) len, (long) data->param3);
2990                 return -1;
2991         }
2992
2993         tmp = os_strdup(pos);
2994         if (tmp == NULL)
2995                 return -1;
2996
2997         dst = (char **) (((u8 *) config) + (long) data->param1);
2998         os_free(*dst);
2999         *dst = tmp;
3000         wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
3001
3002         return 0;
3003 }
3004
3005
3006 static int wpa_config_process_bgscan(const struct global_parse_data *data,
3007                                      struct wpa_config *config, int line,
3008                                      const char *pos)
3009 {
3010         size_t len;
3011         char *tmp;
3012         int res;
3013
3014         tmp = wpa_config_parse_string(pos, &len);
3015         if (tmp == NULL) {
3016                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s",
3017                            line, data->name);
3018                 return -1;
3019         }
3020
3021         res = wpa_global_config_parse_str(data, config, line, tmp);
3022         os_free(tmp);
3023         return res;
3024 }
3025
3026
3027 static int wpa_global_config_parse_bin(const struct global_parse_data *data,
3028                                        struct wpa_config *config, int line,
3029                                        const char *pos)
3030 {
3031         size_t len;
3032         struct wpabuf **dst, *tmp;
3033
3034         len = os_strlen(pos);
3035         if (len & 0x01)
3036                 return -1;
3037
3038         tmp = wpabuf_alloc(len / 2);
3039         if (tmp == NULL)
3040                 return -1;
3041
3042         if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) {
3043                 wpabuf_free(tmp);
3044                 return -1;
3045         }
3046
3047         dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
3048         wpabuf_free(*dst);
3049         *dst = tmp;
3050         wpa_printf(MSG_DEBUG, "%s", data->name);
3051
3052         return 0;
3053 }
3054
3055
3056 static int wpa_config_process_freq_list(const struct global_parse_data *data,
3057                                         struct wpa_config *config, int line,
3058                                         const char *value)
3059 {
3060         int *freqs;
3061
3062         freqs = wpa_config_parse_int_array(value);
3063         if (freqs == NULL)
3064                 return -1;
3065         if (freqs[0] == 0) {
3066                 os_free(freqs);
3067                 freqs = NULL;
3068         }
3069         os_free(config->freq_list);
3070         config->freq_list = freqs;
3071         return 0;
3072 }
3073
3074
3075 #ifdef CONFIG_P2P
3076 static int wpa_global_config_parse_ipv4(const struct global_parse_data *data,
3077                                         struct wpa_config *config, int line,
3078                                         const char *pos)
3079 {
3080         u32 *dst;
3081         struct hostapd_ip_addr addr;
3082
3083         if (hostapd_parse_ip_addr(pos, &addr) < 0)
3084                 return -1;
3085         if (addr.af != AF_INET)
3086                 return -1;
3087
3088         dst = (u32 *) (((u8 *) config) + (long) data->param1);
3089         os_memcpy(dst, &addr.u.v4.s_addr, 4);
3090         wpa_printf(MSG_DEBUG, "%s = 0x%x", data->name,
3091                    WPA_GET_BE32((u8 *) dst));
3092
3093         return 0;
3094 }
3095 #endif /* CONFIG_P2P */
3096
3097
3098 static int wpa_config_process_country(const struct global_parse_data *data,
3099                                       struct wpa_config *config, int line,
3100                                       const char *pos)
3101 {
3102         if (!pos[0] || !pos[1]) {
3103                 wpa_printf(MSG_DEBUG, "Invalid country set");
3104                 return -1;
3105         }
3106         config->country[0] = pos[0];
3107         config->country[1] = pos[1];
3108         wpa_printf(MSG_DEBUG, "country='%c%c'",
3109                    config->country[0], config->country[1]);
3110         return 0;
3111 }
3112
3113
3114 static int wpa_config_process_load_dynamic_eap(
3115         const struct global_parse_data *data, struct wpa_config *config,
3116         int line, const char *so)
3117 {
3118         int ret;
3119         wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
3120         ret = eap_peer_method_load(so);
3121         if (ret == -2) {
3122                 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
3123                            "reloading.");
3124         } else if (ret) {
3125                 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
3126                            "method '%s'.", line, so);
3127                 return -1;
3128         }
3129
3130         return 0;
3131 }
3132
3133
3134 #ifdef CONFIG_WPS
3135
3136 static int wpa_config_process_uuid(const struct global_parse_data *data,
3137                                    struct wpa_config *config, int line,
3138                                    const char *pos)
3139 {
3140         char buf[40];
3141         if (uuid_str2bin(pos, config->uuid)) {
3142                 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
3143                 return -1;
3144         }
3145         uuid_bin2str(config->uuid, buf, sizeof(buf));
3146         wpa_printf(MSG_DEBUG, "uuid=%s", buf);
3147         return 0;
3148 }
3149
3150
3151 static int wpa_config_process_device_type(
3152         const struct global_parse_data *data,
3153         struct wpa_config *config, int line, const char *pos)
3154 {
3155         return wps_dev_type_str2bin(pos, config->device_type);
3156 }
3157
3158
3159 static int wpa_config_process_os_version(const struct global_parse_data *data,
3160                                          struct wpa_config *config, int line,
3161                                          const char *pos)
3162 {
3163         if (hexstr2bin(pos, config->os_version, 4)) {
3164                 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
3165                 return -1;
3166         }
3167         wpa_printf(MSG_DEBUG, "os_version=%08x",
3168                    WPA_GET_BE32(config->os_version));
3169         return 0;
3170 }
3171
3172
3173 static int wpa_config_process_wps_vendor_ext_m1(
3174         const struct global_parse_data *data,
3175         struct wpa_config *config, int line, const char *pos)
3176 {
3177         struct wpabuf *tmp;
3178         int len = os_strlen(pos) / 2;
3179         u8 *p;
3180
3181         if (!len) {
3182                 wpa_printf(MSG_ERROR, "Line %d: "
3183                            "invalid wps_vendor_ext_m1", line);
3184                 return -1;
3185         }
3186
3187         tmp = wpabuf_alloc(len);
3188         if (tmp) {
3189                 p = wpabuf_put(tmp, len);
3190
3191                 if (hexstr2bin(pos, p, len)) {
3192                         wpa_printf(MSG_ERROR, "Line %d: "
3193                                    "invalid wps_vendor_ext_m1", line);
3194                         wpabuf_free(tmp);
3195                         return -1;
3196                 }
3197
3198                 wpabuf_free(config->wps_vendor_ext_m1);
3199                 config->wps_vendor_ext_m1 = tmp;
3200         } else {
3201                 wpa_printf(MSG_ERROR, "Can not allocate "
3202                            "memory for wps_vendor_ext_m1");
3203                 return -1;
3204         }
3205
3206         return 0;
3207 }
3208
3209 #endif /* CONFIG_WPS */
3210
3211 #ifdef CONFIG_P2P
3212 static int wpa_config_process_sec_device_type(
3213         const struct global_parse_data *data,
3214         struct wpa_config *config, int line, const char *pos)
3215 {
3216         int idx;
3217
3218         if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
3219                 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
3220                            "items", line);
3221                 return -1;
3222         }
3223
3224         idx = config->num_sec_device_types;
3225
3226         if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
3227                 return -1;
3228
3229         config->num_sec_device_types++;
3230         return 0;
3231 }
3232
3233
3234 static int wpa_config_process_p2p_pref_chan(
3235         const struct global_parse_data *data,
3236         struct wpa_config *config, int line, const char *pos)
3237 {
3238         struct p2p_channel *pref = NULL, *n;
3239         unsigned int num = 0;
3240         const char *pos2;
3241         u8 op_class, chan;
3242
3243         /* format: class:chan,class:chan,... */
3244
3245         while (*pos) {
3246                 op_class = atoi(pos);
3247                 pos2 = os_strchr(pos, ':');
3248                 if (pos2 == NULL)
3249                         goto fail;
3250                 pos2++;
3251                 chan = atoi(pos2);
3252
3253                 n = os_realloc_array(pref, num + 1,
3254                                      sizeof(struct p2p_channel));
3255                 if (n == NULL)
3256                         goto fail;
3257                 pref = n;
3258                 pref[num].op_class = op_class;
3259                 pref[num].chan = chan;
3260                 num++;
3261
3262                 pos = os_strchr(pos2, ',');
3263                 if (pos == NULL)
3264                         break;
3265                 pos++;
3266         }
3267
3268         os_free(config->p2p_pref_chan);
3269         config->p2p_pref_chan = pref;
3270         config->num_p2p_pref_chan = num;
3271         wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
3272                     (u8 *) config->p2p_pref_chan,
3273                     config->num_p2p_pref_chan * sizeof(struct p2p_channel));
3274
3275         return 0;
3276
3277 fail:
3278         os_free(pref);
3279         wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
3280         return -1;
3281 }
3282
3283
3284 static int wpa_config_process_p2p_no_go_freq(
3285         const struct global_parse_data *data,
3286         struct wpa_config *config, int line, const char *pos)
3287 {
3288         int ret;
3289
3290         ret = freq_range_list_parse(&config->p2p_no_go_freq, pos);
3291         if (ret < 0) {
3292                 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_no_go_freq", line);
3293                 return -1;
3294         }
3295
3296         wpa_printf(MSG_DEBUG, "P2P: p2p_no_go_freq with %u items",
3297                    config->p2p_no_go_freq.num);
3298
3299         return 0;
3300 }
3301
3302 #endif /* CONFIG_P2P */
3303
3304
3305 static int wpa_config_process_hessid(
3306         const struct global_parse_data *data,
3307         struct wpa_config *config, int line, const char *pos)
3308 {
3309         if (hwaddr_aton2(pos, config->hessid) < 0) {
3310                 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
3311                            line, pos);
3312                 return -1;
3313         }
3314
3315         return 0;
3316 }
3317
3318
3319 static int wpa_config_process_sae_groups(
3320         const struct global_parse_data *data,
3321         struct wpa_config *config, int line, const char *pos)
3322 {
3323         int *groups = wpa_config_parse_int_array(pos);
3324         if (groups == NULL) {
3325                 wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'",
3326                            line, pos);
3327                 return -1;
3328         }
3329
3330         os_free(config->sae_groups);
3331         config->sae_groups = groups;
3332
3333         return 0;
3334 }
3335
3336
3337 static int wpa_config_process_ap_vendor_elements(
3338         const struct global_parse_data *data,
3339         struct wpa_config *config, int line, const char *pos)
3340 {
3341         struct wpabuf *tmp;
3342         int len = os_strlen(pos) / 2;
3343         u8 *p;
3344
3345         if (!len) {
3346                 wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements",
3347                            line);
3348                 return -1;
3349         }
3350
3351         tmp = wpabuf_alloc(len);
3352         if (tmp) {
3353                 p = wpabuf_put(tmp, len);
3354
3355                 if (hexstr2bin(pos, p, len)) {
3356                         wpa_printf(MSG_ERROR, "Line %d: invalid "
3357                                    "ap_vendor_elements", line);
3358                         wpabuf_free(tmp);
3359                         return -1;
3360                 }
3361
3362                 wpabuf_free(config->ap_vendor_elements);
3363                 config->ap_vendor_elements = tmp;
3364         } else {
3365                 wpa_printf(MSG_ERROR, "Cannot allocate memory for "
3366                            "ap_vendor_elements");
3367                 return -1;
3368         }
3369
3370         return 0;
3371 }
3372
3373
3374 #ifdef CONFIG_CTRL_IFACE
3375 static int wpa_config_process_no_ctrl_interface(
3376         const struct global_parse_data *data,
3377         struct wpa_config *config, int line, const char *pos)
3378 {
3379         wpa_printf(MSG_DEBUG, "no_ctrl_interface -> ctrl_interface=NULL");
3380         os_free(config->ctrl_interface);
3381         config->ctrl_interface = NULL;
3382         return 0;
3383 }
3384 #endif /* CONFIG_CTRL_IFACE */
3385
3386
3387 #ifdef OFFSET
3388 #undef OFFSET
3389 #endif /* OFFSET */
3390 /* OFFSET: Get offset of a variable within the wpa_config structure */
3391 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
3392
3393 #define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL
3394 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL
3395 #define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f)
3396 #define INT(f) _INT(f), NULL, NULL
3397 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
3398 #define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f)
3399 #define STR(f) _STR(f), NULL, NULL
3400 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
3401 #define BIN(f) #f, wpa_global_config_parse_bin, OFFSET(f), NULL, NULL
3402 #define IPV4(f) #f, wpa_global_config_parse_ipv4, OFFSET(f), NULL, NULL
3403
3404 static const struct global_parse_data global_fields[] = {
3405 #ifdef CONFIG_CTRL_IFACE
3406         { STR(ctrl_interface), 0 },
3407         { FUNC_NO_VAR(no_ctrl_interface), 0 },
3408         { STR(ctrl_interface_group), 0 } /* deprecated */,
3409 #endif /* CONFIG_CTRL_IFACE */
3410         { INT_RANGE(eapol_version, 1, 2), 0 },
3411         { INT(ap_scan), 0 },
3412         { FUNC(bgscan), 0 },
3413         { INT(disable_scan_offload), 0 },
3414         { INT(fast_reauth), 0 },
3415         { STR(opensc_engine_path), 0 },
3416         { STR(pkcs11_engine_path), 0 },
3417         { STR(pkcs11_module_path), 0 },
3418         { STR(pcsc_reader), 0 },
3419         { STR(pcsc_pin), 0 },
3420         { INT(external_sim), 0 },
3421         { STR(driver_param), 0 },
3422         { INT(dot11RSNAConfigPMKLifetime), 0 },
3423         { INT(dot11RSNAConfigPMKReauthThreshold), 0 },
3424         { INT(dot11RSNAConfigSATimeout), 0 },
3425 #ifndef CONFIG_NO_CONFIG_WRITE
3426         { INT(update_config), 0 },
3427 #endif /* CONFIG_NO_CONFIG_WRITE */
3428         { FUNC_NO_VAR(load_dynamic_eap), 0 },
3429 #ifdef CONFIG_WPS
3430         { FUNC(uuid), CFG_CHANGED_UUID },
3431         { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME },
3432         { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
3433         { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
3434         { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
3435         { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
3436         { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
3437         { FUNC(os_version), CFG_CHANGED_OS_VERSION },
3438         { STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
3439         { INT_RANGE(wps_cred_processing, 0, 2), 0 },
3440         { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
3441 #endif /* CONFIG_WPS */
3442 #ifdef CONFIG_P2P
3443         { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
3444         { INT(p2p_listen_reg_class), 0 },
3445         { INT(p2p_listen_channel), 0 },
3446         { INT(p2p_oper_reg_class), CFG_CHANGED_P2P_OPER_CHANNEL },
3447         { INT(p2p_oper_channel), CFG_CHANGED_P2P_OPER_CHANNEL },
3448         { INT_RANGE(p2p_go_intent, 0, 15), 0 },
3449         { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
3450         { INT_RANGE(persistent_reconnect, 0, 1), 0 },
3451         { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
3452         { INT(p2p_group_idle), 0 },
3453         { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
3454         { FUNC(p2p_no_go_freq), CFG_CHANGED_P2P_PREF_CHAN },
3455         { INT_RANGE(p2p_add_cli_chan, 0, 1), 0 },
3456         { INT(p2p_go_ht40), 0 },
3457         { INT(p2p_go_vht), 0 },
3458         { INT(p2p_disabled), 0 },
3459         { INT(p2p_no_group_iface), 0 },
3460         { INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 },
3461         { IPV4(ip_addr_go), 0 },
3462         { IPV4(ip_addr_mask), 0 },
3463         { IPV4(ip_addr_start), 0 },
3464         { IPV4(ip_addr_end), 0 },
3465 #endif /* CONFIG_P2P */
3466         { FUNC(country), CFG_CHANGED_COUNTRY },
3467         { INT(bss_max_count), 0 },
3468         { INT(bss_expiration_age), 0 },
3469         { INT(bss_expiration_scan_count), 0 },
3470         { INT_RANGE(filter_ssids, 0, 1), 0 },
3471         { INT_RANGE(filter_rssi, -100, 0), 0 },
3472         { INT(max_num_sta), 0 },
3473         { INT_RANGE(disassoc_low_ack, 0, 1), 0 },
3474 #ifdef CONFIG_HS20
3475         { INT_RANGE(hs20, 0, 1), 0 },
3476 #endif /* CONFIG_HS20 */
3477         { INT_RANGE(interworking, 0, 1), 0 },
3478         { FUNC(hessid), 0 },
3479         { INT_RANGE(access_network_type, 0, 15), 0 },
3480         { INT_RANGE(pbc_in_m1, 0, 1), 0 },
3481         { STR(autoscan), 0 },
3482         { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff),
3483           CFG_CHANGED_NFC_PASSWORD_TOKEN },
3484         { BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3485         { BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3486         { BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3487         { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
3488         { INT(p2p_go_max_inactivity), 0 },
3489         { INT_RANGE(auto_interworking, 0, 1), 0 },
3490         { INT(okc), 0 },
3491         { INT(pmf), 0 },
3492         { FUNC(sae_groups), 0 },
3493         { INT(dtim_period), 0 },
3494         { INT(beacon_int), 0 },
3495         { FUNC(ap_vendor_elements), 0 },
3496         { INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
3497         { FUNC(freq_list), 0 },
3498         { INT(scan_cur_freq), 0 },
3499         { INT(sched_scan_interval), 0 },
3500         { INT(tdls_external_control), 0},
3501         { STR(osu_dir), 0 },
3502 };
3503
3504 #undef FUNC
3505 #undef _INT
3506 #undef INT
3507 #undef INT_RANGE
3508 #undef _STR
3509 #undef STR
3510 #undef STR_RANGE
3511 #undef BIN
3512 #undef IPV4
3513 #define NUM_GLOBAL_FIELDS ARRAY_SIZE(global_fields)
3514
3515
3516 int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
3517 {
3518         size_t i;
3519         int ret = 0;
3520
3521         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
3522                 const struct global_parse_data *field = &global_fields[i];
3523                 size_t flen = os_strlen(field->name);
3524                 if (os_strncmp(pos, field->name, flen) != 0 ||
3525                     pos[flen] != '=')
3526                         continue;
3527
3528                 if (field->parser(field, config, line, pos + flen + 1)) {
3529                         wpa_printf(MSG_ERROR, "Line %d: failed to "
3530                                    "parse '%s'.", line, pos);
3531                         ret = -1;
3532                 }
3533                 if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN)
3534                         config->wps_nfc_pw_from_config = 1;
3535                 config->changed_parameters |= field->changed_flag;
3536                 break;
3537         }
3538         if (i == NUM_GLOBAL_FIELDS) {
3539 #ifdef CONFIG_AP
3540                 if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
3541                         char *tmp = os_strchr(pos, '=');
3542                         if (tmp == NULL) {
3543                                 if (line < 0)
3544                                         return -1;
3545                                 wpa_printf(MSG_ERROR, "Line %d: invalid line "
3546                                            "'%s'", line, pos);
3547                                 return -1;
3548                         }
3549                         *tmp++ = '\0';
3550                         if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
3551                                                   tmp)) {
3552                                 wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
3553                                            "AC item", line);
3554                                 return -1;
3555                         }
3556                 }
3557 #endif /* CONFIG_AP */
3558                 if (line < 0)
3559                         return -1;
3560                 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
3561                            line, pos);
3562                 ret = -1;
3563         }
3564
3565         return ret;
3566 }