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         for (i = 0; i < cred->num_req_conn_capab; i++)
1935                 os_free(cred->req_conn_capab_port[i]);
1936         os_free(cred->req_conn_capab_port);
1937         os_free(cred->req_conn_capab_proto);
1938         os_free(cred);
1939 }
1940
1941
1942 void wpa_config_flush_blobs(struct wpa_config *config)
1943 {
1944 #ifndef CONFIG_NO_CONFIG_BLOBS
1945         struct wpa_config_blob *blob, *prev;
1946
1947         blob = config->blobs;
1948         config->blobs = NULL;
1949         while (blob) {
1950                 prev = blob;
1951                 blob = blob->next;
1952                 wpa_config_free_blob(prev);
1953         }
1954 #endif /* CONFIG_NO_CONFIG_BLOBS */
1955 }
1956
1957
1958 /**
1959  * wpa_config_free - Free configuration data
1960  * @config: Configuration data from wpa_config_read()
1961  *
1962  * This function frees all resources allocated for the configuration data by
1963  * wpa_config_read().
1964  */
1965 void wpa_config_free(struct wpa_config *config)
1966 {
1967         struct wpa_ssid *ssid, *prev = NULL;
1968         struct wpa_cred *cred, *cprev;
1969
1970         ssid = config->ssid;
1971         while (ssid) {
1972                 prev = ssid;
1973                 ssid = ssid->next;
1974                 wpa_config_free_ssid(prev);
1975         }
1976
1977         cred = config->cred;
1978         while (cred) {
1979                 cprev = cred;
1980                 cred = cred->next;
1981                 wpa_config_free_cred(cprev);
1982         }
1983
1984         wpa_config_flush_blobs(config);
1985
1986         wpabuf_free(config->wps_vendor_ext_m1);
1987         os_free(config->ctrl_interface);
1988         os_free(config->ctrl_interface_group);
1989         os_free(config->opensc_engine_path);
1990         os_free(config->pkcs11_engine_path);
1991         os_free(config->pkcs11_module_path);
1992         os_free(config->pcsc_reader);
1993         os_free(config->pcsc_pin);
1994         os_free(config->driver_param);
1995         os_free(config->device_name);
1996         os_free(config->manufacturer);
1997         os_free(config->model_name);
1998         os_free(config->model_number);
1999         os_free(config->serial_number);
2000         os_free(config->config_methods);
2001         os_free(config->p2p_ssid_postfix);
2002         os_free(config->pssid);
2003         os_free(config->p2p_pref_chan);
2004         os_free(config->p2p_no_go_freq.range);
2005         os_free(config->autoscan);
2006         os_free(config->freq_list);
2007         wpabuf_free(config->wps_nfc_dh_pubkey);
2008         wpabuf_free(config->wps_nfc_dh_privkey);
2009         wpabuf_free(config->wps_nfc_dev_pw);
2010         os_free(config->ext_password_backend);
2011         os_free(config->sae_groups);
2012         wpabuf_free(config->ap_vendor_elements);
2013         os_free(config->osu_dir);
2014         os_free(config);
2015 }
2016
2017
2018 /**
2019  * wpa_config_foreach_network - Iterate over each configured network
2020  * @config: Configuration data from wpa_config_read()
2021  * @func: Callback function to process each network
2022  * @arg: Opaque argument to pass to callback function
2023  *
2024  * Iterate over the set of configured networks calling the specified
2025  * function for each item. We guard against callbacks removing the
2026  * supplied network.
2027  */
2028 void wpa_config_foreach_network(struct wpa_config *config,
2029                                 void (*func)(void *, struct wpa_ssid *),
2030                                 void *arg)
2031 {
2032         struct wpa_ssid *ssid, *next;
2033
2034         ssid = config->ssid;
2035         while (ssid) {
2036                 next = ssid->next;
2037                 func(arg, ssid);
2038                 ssid = next;
2039         }
2040 }
2041
2042
2043 /**
2044  * wpa_config_get_network - Get configured network based on id
2045  * @config: Configuration data from wpa_config_read()
2046  * @id: Unique network id to search for
2047  * Returns: Network configuration or %NULL if not found
2048  */
2049 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
2050 {
2051         struct wpa_ssid *ssid;
2052
2053         ssid = config->ssid;
2054         while (ssid) {
2055                 if (id == ssid->id)
2056                         break;
2057                 ssid = ssid->next;
2058         }
2059
2060         return ssid;
2061 }
2062
2063
2064 /**
2065  * wpa_config_add_network - Add a new network with empty configuration
2066  * @config: Configuration data from wpa_config_read()
2067  * Returns: The new network configuration or %NULL if operation failed
2068  */
2069 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
2070 {
2071         int id;
2072         struct wpa_ssid *ssid, *last = NULL;
2073
2074         id = -1;
2075         ssid = config->ssid;
2076         while (ssid) {
2077                 if (ssid->id > id)
2078                         id = ssid->id;
2079                 last = ssid;
2080                 ssid = ssid->next;
2081         }
2082         id++;
2083
2084         ssid = os_zalloc(sizeof(*ssid));
2085         if (ssid == NULL)
2086                 return NULL;
2087         ssid->id = id;
2088         dl_list_init(&ssid->psk_list);
2089         if (last)
2090                 last->next = ssid;
2091         else
2092                 config->ssid = ssid;
2093
2094         wpa_config_update_prio_list(config);
2095
2096         return ssid;
2097 }
2098
2099
2100 /**
2101  * wpa_config_remove_network - Remove a configured network based on id
2102  * @config: Configuration data from wpa_config_read()
2103  * @id: Unique network id to search for
2104  * Returns: 0 on success, or -1 if the network was not found
2105  */
2106 int wpa_config_remove_network(struct wpa_config *config, int id)
2107 {
2108         struct wpa_ssid *ssid, *prev = NULL;
2109
2110         ssid = config->ssid;
2111         while (ssid) {
2112                 if (id == ssid->id)
2113                         break;
2114                 prev = ssid;
2115                 ssid = ssid->next;
2116         }
2117
2118         if (ssid == NULL)
2119                 return -1;
2120
2121         if (prev)
2122                 prev->next = ssid->next;
2123         else
2124                 config->ssid = ssid->next;
2125
2126         wpa_config_update_prio_list(config);
2127         wpa_config_free_ssid(ssid);
2128         return 0;
2129 }
2130
2131
2132 /**
2133  * wpa_config_set_network_defaults - Set network default values
2134  * @ssid: Pointer to network configuration data
2135  */
2136 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
2137 {
2138         ssid->proto = DEFAULT_PROTO;
2139         ssid->pairwise_cipher = DEFAULT_PAIRWISE;
2140         ssid->group_cipher = DEFAULT_GROUP;
2141         ssid->key_mgmt = DEFAULT_KEY_MGMT;
2142         ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
2143 #ifdef IEEE8021X_EAPOL
2144         ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
2145         ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
2146         ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
2147 #endif /* IEEE8021X_EAPOL */
2148 #ifdef CONFIG_HT_OVERRIDES
2149         ssid->disable_ht = DEFAULT_DISABLE_HT;
2150         ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
2151         ssid->disable_sgi = DEFAULT_DISABLE_SGI;
2152         ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
2153         ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
2154         ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
2155 #endif /* CONFIG_HT_OVERRIDES */
2156 #ifdef CONFIG_VHT_OVERRIDES
2157         ssid->vht_rx_mcs_nss_1 = -1;
2158         ssid->vht_rx_mcs_nss_2 = -1;
2159         ssid->vht_rx_mcs_nss_3 = -1;
2160         ssid->vht_rx_mcs_nss_4 = -1;
2161         ssid->vht_rx_mcs_nss_5 = -1;
2162         ssid->vht_rx_mcs_nss_6 = -1;
2163         ssid->vht_rx_mcs_nss_7 = -1;
2164         ssid->vht_rx_mcs_nss_8 = -1;
2165         ssid->vht_tx_mcs_nss_1 = -1;
2166         ssid->vht_tx_mcs_nss_2 = -1;
2167         ssid->vht_tx_mcs_nss_3 = -1;
2168         ssid->vht_tx_mcs_nss_4 = -1;
2169         ssid->vht_tx_mcs_nss_5 = -1;
2170         ssid->vht_tx_mcs_nss_6 = -1;
2171         ssid->vht_tx_mcs_nss_7 = -1;
2172         ssid->vht_tx_mcs_nss_8 = -1;
2173 #endif /* CONFIG_VHT_OVERRIDES */
2174         ssid->proactive_key_caching = -1;
2175 #ifdef CONFIG_IEEE80211W
2176         ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
2177 #endif /* CONFIG_IEEE80211W */
2178 }
2179
2180
2181 /**
2182  * wpa_config_set - Set a variable in network configuration
2183  * @ssid: Pointer to network configuration data
2184  * @var: Variable name, e.g., "ssid"
2185  * @value: Variable value
2186  * @line: Line number in configuration file or 0 if not used
2187  * Returns: 0 on success, -1 on failure
2188  *
2189  * This function can be used to set network configuration variables based on
2190  * both the configuration file and management interface input. The value
2191  * parameter must be in the same format as the text-based configuration file is
2192  * using. For example, strings are using double quotation marks.
2193  */
2194 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
2195                    int line)
2196 {
2197         size_t i;
2198         int ret = 0;
2199
2200         if (ssid == NULL || var == NULL || value == NULL)
2201                 return -1;
2202
2203         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2204                 const struct parse_data *field = &ssid_fields[i];
2205                 if (os_strcmp(var, field->name) != 0)
2206                         continue;
2207
2208                 if (field->parser(field, ssid, line, value)) {
2209                         if (line) {
2210                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
2211                                            "parse %s '%s'.", line, var, value);
2212                         }
2213                         ret = -1;
2214                 }
2215                 break;
2216         }
2217         if (i == NUM_SSID_FIELDS) {
2218                 if (line) {
2219                         wpa_printf(MSG_ERROR, "Line %d: unknown network field "
2220                                    "'%s'.", line, var);
2221                 }
2222                 ret = -1;
2223         }
2224
2225         return ret;
2226 }
2227
2228
2229 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
2230                           const char *value)
2231 {
2232         size_t len;
2233         char *buf;
2234         int ret;
2235
2236         len = os_strlen(value);
2237         buf = os_malloc(len + 3);
2238         if (buf == NULL)
2239                 return -1;
2240         buf[0] = '"';
2241         os_memcpy(buf + 1, value, len);
2242         buf[len + 1] = '"';
2243         buf[len + 2] = '\0';
2244         ret = wpa_config_set(ssid, var, buf, 0);
2245         os_free(buf);
2246         return ret;
2247 }
2248
2249
2250 /**
2251  * wpa_config_get_all - Get all options from network configuration
2252  * @ssid: Pointer to network configuration data
2253  * @get_keys: Determines if keys/passwords will be included in returned list
2254  *      (if they may be exported)
2255  * Returns: %NULL terminated list of all set keys and their values in the form
2256  * of [key1, val1, key2, val2, ... , NULL]
2257  *
2258  * This function can be used to get list of all configured network properties.
2259  * The caller is responsible for freeing the returned list and all its
2260  * elements.
2261  */
2262 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
2263 {
2264         const struct parse_data *field;
2265         char *key, *value;
2266         size_t i;
2267         char **props;
2268         int fields_num;
2269
2270         get_keys = get_keys && ssid->export_keys;
2271
2272         props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
2273         if (!props)
2274                 return NULL;
2275
2276         fields_num = 0;
2277         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2278                 field = &ssid_fields[i];
2279                 if (field->key_data && !get_keys)
2280                         continue;
2281                 value = field->writer(field, ssid);
2282                 if (value == NULL)
2283                         continue;
2284                 if (os_strlen(value) == 0) {
2285                         os_free(value);
2286                         continue;
2287                 }
2288
2289                 key = os_strdup(field->name);
2290                 if (key == NULL) {
2291                         os_free(value);
2292                         goto err;
2293                 }
2294
2295                 props[fields_num * 2] = key;
2296                 props[fields_num * 2 + 1] = value;
2297
2298                 fields_num++;
2299         }
2300
2301         return props;
2302
2303 err:
2304         value = *props;
2305         while (value)
2306                 os_free(value++);
2307         os_free(props);
2308         return NULL;
2309 }
2310
2311
2312 #ifndef NO_CONFIG_WRITE
2313 /**
2314  * wpa_config_get - Get a variable in network configuration
2315  * @ssid: Pointer to network configuration data
2316  * @var: Variable name, e.g., "ssid"
2317  * Returns: Value of the variable or %NULL on failure
2318  *
2319  * This function can be used to get network configuration variables. The
2320  * returned value is a copy of the configuration variable in text format, i.e,.
2321  * the same format that the text-based configuration file and wpa_config_set()
2322  * are using for the value. The caller is responsible for freeing the returned
2323  * value.
2324  */
2325 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
2326 {
2327         size_t i;
2328
2329         if (ssid == NULL || var == NULL)
2330                 return NULL;
2331
2332         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2333                 const struct parse_data *field = &ssid_fields[i];
2334                 if (os_strcmp(var, field->name) == 0)
2335                         return field->writer(field, ssid);
2336         }
2337
2338         return NULL;
2339 }
2340
2341
2342 /**
2343  * wpa_config_get_no_key - Get a variable in network configuration (no keys)
2344  * @ssid: Pointer to network configuration data
2345  * @var: Variable name, e.g., "ssid"
2346  * Returns: Value of the variable or %NULL on failure
2347  *
2348  * This function can be used to get network configuration variable like
2349  * wpa_config_get(). The only difference is that this functions does not expose
2350  * key/password material from the configuration. In case a key/password field
2351  * is requested, the returned value is an empty string or %NULL if the variable
2352  * is not set or "*" if the variable is set (regardless of its value). The
2353  * returned value is a copy of the configuration variable in text format, i.e,.
2354  * the same format that the text-based configuration file and wpa_config_set()
2355  * are using for the value. The caller is responsible for freeing the returned
2356  * value.
2357  */
2358 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
2359 {
2360         size_t i;
2361
2362         if (ssid == NULL || var == NULL)
2363                 return NULL;
2364
2365         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2366                 const struct parse_data *field = &ssid_fields[i];
2367                 if (os_strcmp(var, field->name) == 0) {
2368                         char *res = field->writer(field, ssid);
2369                         if (field->key_data) {
2370                                 if (res && res[0]) {
2371                                         wpa_printf(MSG_DEBUG, "Do not allow "
2372                                                    "key_data field to be "
2373                                                    "exposed");
2374                                         os_free(res);
2375                                         return os_strdup("*");
2376                                 }
2377
2378                                 os_free(res);
2379                                 return NULL;
2380                         }
2381                         return res;
2382                 }
2383         }
2384
2385         return NULL;
2386 }
2387 #endif /* NO_CONFIG_WRITE */
2388
2389
2390 /**
2391  * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
2392  * @ssid: Pointer to network configuration data
2393  *
2394  * This function must be called to update WPA PSK when either SSID or the
2395  * passphrase has changed for the network configuration.
2396  */
2397 void wpa_config_update_psk(struct wpa_ssid *ssid)
2398 {
2399 #ifndef CONFIG_NO_PBKDF2
2400         pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
2401                     ssid->psk, PMK_LEN);
2402         wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
2403                         ssid->psk, PMK_LEN);
2404         ssid->psk_set = 1;
2405 #endif /* CONFIG_NO_PBKDF2 */
2406 }
2407
2408
2409 static int wpa_config_set_cred_req_conn_capab(struct wpa_cred *cred,
2410                                               const char *value)
2411 {
2412         u8 *proto;
2413         int **port;
2414         int *ports, *nports;
2415         const char *pos;
2416         unsigned int num_ports;
2417
2418         proto = os_realloc_array(cred->req_conn_capab_proto,
2419                                  cred->num_req_conn_capab + 1, sizeof(u8));
2420         if (proto == NULL)
2421                 return -1;
2422         cred->req_conn_capab_proto = proto;
2423
2424         port = os_realloc_array(cred->req_conn_capab_port,
2425                                 cred->num_req_conn_capab + 1, sizeof(int *));
2426         if (port == NULL)
2427                 return -1;
2428         cred->req_conn_capab_port = port;
2429
2430         proto[cred->num_req_conn_capab] = atoi(value);
2431
2432         pos = os_strchr(value, ':');
2433         if (pos == NULL) {
2434                 port[cred->num_req_conn_capab] = NULL;
2435                 cred->num_req_conn_capab++;
2436                 return 0;
2437         }
2438         pos++;
2439
2440         ports = NULL;
2441         num_ports = 0;
2442
2443         while (*pos) {
2444                 nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
2445                 if (nports == NULL) {
2446                         os_free(ports);
2447                         return -1;
2448                 }
2449                 ports = nports;
2450                 ports[num_ports++] = atoi(pos);
2451
2452                 pos = os_strchr(pos, ',');
2453                 if (pos == NULL)
2454                         break;
2455                 pos++;
2456         }
2457
2458         nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
2459         if (nports == NULL) {
2460                 os_free(ports);
2461                 return -1;
2462         }
2463         ports = nports;
2464         ports[num_ports] = -1;
2465
2466         port[cred->num_req_conn_capab] = ports;
2467         cred->num_req_conn_capab++;
2468         return 0;
2469 }
2470
2471
2472 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
2473                         const char *value, int line)
2474 {
2475         char *val;
2476         size_t len;
2477
2478         if (os_strcmp(var, "temporary") == 0) {
2479                 cred->temporary = atoi(value);
2480                 return 0;
2481         }
2482
2483         if (os_strcmp(var, "priority") == 0) {
2484                 cred->priority = atoi(value);
2485                 return 0;
2486         }
2487
2488         if (os_strcmp(var, "sp_priority") == 0) {
2489                 int prio = atoi(value);
2490                 if (prio < 0 || prio > 255)
2491                         return -1;
2492                 cred->sp_priority = prio;
2493                 return 0;
2494         }
2495
2496         if (os_strcmp(var, "pcsc") == 0) {
2497                 cred->pcsc = atoi(value);
2498                 return 0;
2499         }
2500
2501         if (os_strcmp(var, "eap") == 0) {
2502                 struct eap_method_type method;
2503                 method.method = eap_peer_get_type(value, &method.vendor);
2504                 if (method.vendor == EAP_VENDOR_IETF &&
2505                     method.method == EAP_TYPE_NONE) {
2506                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
2507                                    "for a credential", line, value);
2508                         return -1;
2509                 }
2510                 os_free(cred->eap_method);
2511                 cred->eap_method = os_malloc(sizeof(*cred->eap_method));
2512                 if (cred->eap_method == NULL)
2513                         return -1;
2514                 os_memcpy(cred->eap_method, &method, sizeof(method));
2515                 return 0;
2516         }
2517
2518         if (os_strcmp(var, "password") == 0 &&
2519             os_strncmp(value, "ext:", 4) == 0) {
2520                 os_free(cred->password);
2521                 cred->password = os_strdup(value);
2522                 cred->ext_password = 1;
2523                 return 0;
2524         }
2525
2526         if (os_strcmp(var, "update_identifier") == 0) {
2527                 cred->update_identifier = atoi(value);
2528                 return 0;
2529         }
2530
2531         if (os_strcmp(var, "min_dl_bandwidth_home") == 0) {
2532                 cred->min_dl_bandwidth_home = atoi(value);
2533                 return 0;
2534         }
2535
2536         if (os_strcmp(var, "min_ul_bandwidth_home") == 0) {
2537                 cred->min_ul_bandwidth_home = atoi(value);
2538                 return 0;
2539         }
2540
2541         if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0) {
2542                 cred->min_dl_bandwidth_roaming = atoi(value);
2543                 return 0;
2544         }
2545
2546         if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0) {
2547                 cred->min_ul_bandwidth_roaming = atoi(value);
2548                 return 0;
2549         }
2550
2551         if (os_strcmp(var, "max_bss_load") == 0) {
2552                 cred->max_bss_load = atoi(value);
2553                 return 0;
2554         }
2555
2556         if (os_strcmp(var, "req_conn_capab") == 0)
2557                 return wpa_config_set_cred_req_conn_capab(cred, value);
2558
2559         if (os_strcmp(var, "ocsp") == 0) {
2560                 cred->ocsp = atoi(value);
2561                 return 0;
2562         }
2563
2564         val = wpa_config_parse_string(value, &len);
2565         if (val == NULL) {
2566                 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
2567                            "value '%s'.", line, var, value);
2568                 return -1;
2569         }
2570
2571         if (os_strcmp(var, "realm") == 0) {
2572                 os_free(cred->realm);
2573                 cred->realm = val;
2574                 return 0;
2575         }
2576
2577         if (os_strcmp(var, "username") == 0) {
2578                 os_free(cred->username);
2579                 cred->username = val;
2580                 return 0;
2581         }
2582
2583         if (os_strcmp(var, "password") == 0) {
2584                 os_free(cred->password);
2585                 cred->password = val;
2586                 cred->ext_password = 0;
2587                 return 0;
2588         }
2589
2590         if (os_strcmp(var, "ca_cert") == 0) {
2591                 os_free(cred->ca_cert);
2592                 cred->ca_cert = val;
2593                 return 0;
2594         }
2595
2596         if (os_strcmp(var, "client_cert") == 0) {
2597                 os_free(cred->client_cert);
2598                 cred->client_cert = val;
2599                 return 0;
2600         }
2601
2602         if (os_strcmp(var, "private_key") == 0) {
2603                 os_free(cred->private_key);
2604                 cred->private_key = val;
2605                 return 0;
2606         }
2607
2608         if (os_strcmp(var, "private_key_passwd") == 0) {
2609                 os_free(cred->private_key_passwd);
2610                 cred->private_key_passwd = val;
2611                 return 0;
2612         }
2613
2614         if (os_strcmp(var, "imsi") == 0) {
2615                 os_free(cred->imsi);
2616                 cred->imsi = val;
2617                 return 0;
2618         }
2619
2620         if (os_strcmp(var, "milenage") == 0) {
2621                 os_free(cred->milenage);
2622                 cred->milenage = val;
2623                 return 0;
2624         }
2625
2626         if (os_strcmp(var, "domain_suffix_match") == 0) {
2627                 os_free(cred->domain_suffix_match);
2628                 cred->domain_suffix_match = val;
2629                 return 0;
2630         }
2631
2632         if (os_strcmp(var, "domain") == 0) {
2633                 char **new_domain;
2634                 new_domain = os_realloc_array(cred->domain,
2635                                               cred->num_domain + 1,
2636                                               sizeof(char *));
2637                 if (new_domain == NULL) {
2638                         os_free(val);
2639                         return -1;
2640                 }
2641                 new_domain[cred->num_domain++] = val;
2642                 cred->domain = new_domain;
2643                 return 0;
2644         }
2645
2646         if (os_strcmp(var, "phase1") == 0) {
2647                 os_free(cred->phase1);
2648                 cred->phase1 = val;
2649                 return 0;
2650         }
2651
2652         if (os_strcmp(var, "phase2") == 0) {
2653                 os_free(cred->phase2);
2654                 cred->phase2 = val;
2655                 return 0;
2656         }
2657
2658         if (os_strcmp(var, "roaming_consortium") == 0) {
2659                 if (len < 3 || len > sizeof(cred->roaming_consortium)) {
2660                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2661                                    "roaming_consortium length %d (3..15 "
2662                                    "expected)", line, (int) len);
2663                         os_free(val);
2664                         return -1;
2665                 }
2666                 os_memcpy(cred->roaming_consortium, val, len);
2667                 cred->roaming_consortium_len = len;
2668                 os_free(val);
2669                 return 0;
2670         }
2671
2672         if (os_strcmp(var, "required_roaming_consortium") == 0) {
2673                 if (len < 3 || len > sizeof(cred->required_roaming_consortium))
2674                 {
2675                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2676                                    "required_roaming_consortium length %d "
2677                                    "(3..15 expected)", line, (int) len);
2678                         os_free(val);
2679                         return -1;
2680                 }
2681                 os_memcpy(cred->required_roaming_consortium, val, len);
2682                 cred->required_roaming_consortium_len = len;
2683                 os_free(val);
2684                 return 0;
2685         }
2686
2687         if (os_strcmp(var, "excluded_ssid") == 0) {
2688                 struct excluded_ssid *e;
2689
2690                 if (len > MAX_SSID_LEN) {
2691                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2692                                    "excluded_ssid length %d", line, (int) len);
2693                         os_free(val);
2694                         return -1;
2695                 }
2696
2697                 e = os_realloc_array(cred->excluded_ssid,
2698                                      cred->num_excluded_ssid + 1,
2699                                      sizeof(struct excluded_ssid));
2700                 if (e == NULL) {
2701                         os_free(val);
2702                         return -1;
2703                 }
2704                 cred->excluded_ssid = e;
2705
2706                 e = &cred->excluded_ssid[cred->num_excluded_ssid++];
2707                 os_memcpy(e->ssid, val, len);
2708                 e->ssid_len = len;
2709
2710                 os_free(val);
2711
2712                 return 0;
2713         }
2714
2715         if (os_strcmp(var, "roaming_partner") == 0) {
2716                 struct roaming_partner *p;
2717                 char *pos;
2718
2719                 p = os_realloc_array(cred->roaming_partner,
2720                                      cred->num_roaming_partner + 1,
2721                                      sizeof(struct roaming_partner));
2722                 if (p == NULL) {
2723                         os_free(val);
2724                         return -1;
2725                 }
2726                 cred->roaming_partner = p;
2727
2728                 p = &cred->roaming_partner[cred->num_roaming_partner];
2729
2730                 pos = os_strchr(val, ',');
2731                 if (pos == NULL) {
2732                         os_free(val);
2733                         return -1;
2734                 }
2735                 *pos++ = '\0';
2736                 if (pos - val - 1 >= (int) sizeof(p->fqdn)) {
2737                         os_free(val);
2738                         return -1;
2739                 }
2740                 os_memcpy(p->fqdn, val, pos - val);
2741
2742                 p->exact_match = atoi(pos);
2743
2744                 pos = os_strchr(pos, ',');
2745                 if (pos == NULL) {
2746                         os_free(val);
2747                         return -1;
2748                 }
2749                 *pos++ = '\0';
2750
2751                 p->priority = atoi(pos);
2752
2753                 pos = os_strchr(pos, ',');
2754                 if (pos == NULL) {
2755                         os_free(val);
2756                         return -1;
2757                 }
2758                 *pos++ = '\0';
2759
2760                 if (os_strlen(pos) >= sizeof(p->country)) {
2761                         os_free(val);
2762                         return -1;
2763                 }
2764                 os_memcpy(p->country, pos, os_strlen(pos) + 1);
2765
2766                 cred->num_roaming_partner++;
2767                 os_free(val);
2768
2769                 return 0;
2770         }
2771
2772         if (os_strcmp(var, "provisioning_sp") == 0) {
2773                 os_free(cred->provisioning_sp);
2774                 cred->provisioning_sp = val;
2775                 return 0;
2776         }
2777
2778         if (line) {
2779                 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
2780                            line, var);
2781         }
2782
2783         os_free(val);
2784
2785         return -1;
2786 }
2787
2788
2789 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
2790 {
2791         struct wpa_cred *cred;
2792
2793         cred = config->cred;
2794         while (cred) {
2795                 if (id == cred->id)
2796                         break;
2797                 cred = cred->next;
2798         }
2799
2800         return cred;
2801 }
2802
2803
2804 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
2805 {
2806         int id;
2807         struct wpa_cred *cred, *last = NULL;
2808
2809         id = -1;
2810         cred = config->cred;
2811         while (cred) {
2812                 if (cred->id > id)
2813                         id = cred->id;
2814                 last = cred;
2815                 cred = cred->next;
2816         }
2817         id++;
2818
2819         cred = os_zalloc(sizeof(*cred));
2820         if (cred == NULL)
2821                 return NULL;
2822         cred->id = id;
2823         if (last)
2824                 last->next = cred;
2825         else
2826                 config->cred = cred;
2827
2828         return cred;
2829 }
2830
2831
2832 int wpa_config_remove_cred(struct wpa_config *config, int id)
2833 {
2834         struct wpa_cred *cred, *prev = NULL;
2835
2836         cred = config->cred;
2837         while (cred) {
2838                 if (id == cred->id)
2839                         break;
2840                 prev = cred;
2841                 cred = cred->next;
2842         }
2843
2844         if (cred == NULL)
2845                 return -1;
2846
2847         if (prev)
2848                 prev->next = cred->next;
2849         else
2850                 config->cred = cred->next;
2851
2852         wpa_config_free_cred(cred);
2853         return 0;
2854 }
2855
2856
2857 #ifndef CONFIG_NO_CONFIG_BLOBS
2858 /**
2859  * wpa_config_get_blob - Get a named configuration blob
2860  * @config: Configuration data from wpa_config_read()
2861  * @name: Name of the blob
2862  * Returns: Pointer to blob data or %NULL if not found
2863  */
2864 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
2865                                                    const char *name)
2866 {
2867         struct wpa_config_blob *blob = config->blobs;
2868
2869         while (blob) {
2870                 if (os_strcmp(blob->name, name) == 0)
2871                         return blob;
2872                 blob = blob->next;
2873         }
2874         return NULL;
2875 }
2876
2877
2878 /**
2879  * wpa_config_set_blob - Set or add a named configuration blob
2880  * @config: Configuration data from wpa_config_read()
2881  * @blob: New value for the blob
2882  *
2883  * Adds a new configuration blob or replaces the current value of an existing
2884  * blob.
2885  */
2886 void wpa_config_set_blob(struct wpa_config *config,
2887                          struct wpa_config_blob *blob)
2888 {
2889         wpa_config_remove_blob(config, blob->name);
2890         blob->next = config->blobs;
2891         config->blobs = blob;
2892 }
2893
2894
2895 /**
2896  * wpa_config_free_blob - Free blob data
2897  * @blob: Pointer to blob to be freed
2898  */
2899 void wpa_config_free_blob(struct wpa_config_blob *blob)
2900 {
2901         if (blob) {
2902                 os_free(blob->name);
2903                 os_free(blob->data);
2904                 os_free(blob);
2905         }
2906 }
2907
2908
2909 /**
2910  * wpa_config_remove_blob - Remove a named configuration blob
2911  * @config: Configuration data from wpa_config_read()
2912  * @name: Name of the blob to remove
2913  * Returns: 0 if blob was removed or -1 if blob was not found
2914  */
2915 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
2916 {
2917         struct wpa_config_blob *pos = config->blobs, *prev = NULL;
2918
2919         while (pos) {
2920                 if (os_strcmp(pos->name, name) == 0) {
2921                         if (prev)
2922                                 prev->next = pos->next;
2923                         else
2924                                 config->blobs = pos->next;
2925                         wpa_config_free_blob(pos);
2926                         return 0;
2927                 }
2928                 prev = pos;
2929                 pos = pos->next;
2930         }
2931
2932         return -1;
2933 }
2934 #endif /* CONFIG_NO_CONFIG_BLOBS */
2935
2936
2937 /**
2938  * wpa_config_alloc_empty - Allocate an empty configuration
2939  * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
2940  * socket
2941  * @driver_param: Driver parameters
2942  * Returns: Pointer to allocated configuration data or %NULL on failure
2943  */
2944 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
2945                                            const char *driver_param)
2946 {
2947         struct wpa_config *config;
2948         const int aCWmin = 4, aCWmax = 10;
2949         const struct hostapd_wmm_ac_params ac_bk =
2950                 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
2951         const struct hostapd_wmm_ac_params ac_be =
2952                 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
2953         const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
2954                 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
2955         const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
2956                 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
2957
2958         config = os_zalloc(sizeof(*config));
2959         if (config == NULL)
2960                 return NULL;
2961         config->eapol_version = DEFAULT_EAPOL_VERSION;
2962         config->ap_scan = DEFAULT_AP_SCAN;
2963         config->fast_reauth = DEFAULT_FAST_REAUTH;
2964         config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
2965         config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
2966         config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
2967         config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
2968         config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
2969         config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
2970         config->max_num_sta = DEFAULT_MAX_NUM_STA;
2971         config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
2972         config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
2973         config->wmm_ac_params[0] = ac_be;
2974         config->wmm_ac_params[1] = ac_bk;
2975         config->wmm_ac_params[2] = ac_vi;
2976         config->wmm_ac_params[3] = ac_vo;
2977
2978         if (ctrl_interface)
2979                 config->ctrl_interface = os_strdup(ctrl_interface);
2980         if (driver_param)
2981                 config->driver_param = os_strdup(driver_param);
2982
2983         return config;
2984 }
2985
2986
2987 #ifndef CONFIG_NO_STDOUT_DEBUG
2988 /**
2989  * wpa_config_debug_dump_networks - Debug dump of configured networks
2990  * @config: Configuration data from wpa_config_read()
2991  */
2992 void wpa_config_debug_dump_networks(struct wpa_config *config)
2993 {
2994         int prio;
2995         struct wpa_ssid *ssid;
2996
2997         for (prio = 0; prio < config->num_prio; prio++) {
2998                 ssid = config->pssid[prio];
2999                 wpa_printf(MSG_DEBUG, "Priority group %d",
3000                            ssid->priority);
3001                 while (ssid) {
3002                         wpa_printf(MSG_DEBUG, "   id=%d ssid='%s'",
3003                                    ssid->id,
3004                                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3005                         ssid = ssid->pnext;
3006                 }
3007         }
3008 }
3009 #endif /* CONFIG_NO_STDOUT_DEBUG */
3010
3011
3012 struct global_parse_data {
3013         char *name;
3014         int (*parser)(const struct global_parse_data *data,
3015                       struct wpa_config *config, int line, const char *value);
3016         void *param1, *param2, *param3;
3017         unsigned int changed_flag;
3018 };
3019
3020
3021 static int wpa_global_config_parse_int(const struct global_parse_data *data,
3022                                        struct wpa_config *config, int line,
3023                                        const char *pos)
3024 {
3025         int val, *dst;
3026         char *end;
3027
3028         dst = (int *) (((u8 *) config) + (long) data->param1);
3029         val = strtol(pos, &end, 0);
3030         if (*end) {
3031                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
3032                            line, pos);
3033                 return -1;
3034         }
3035         *dst = val;
3036
3037         wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
3038
3039         if (data->param2 && *dst < (long) data->param2) {
3040                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
3041                            "min_value=%ld)", line, data->name, *dst,
3042                            (long) data->param2);
3043                 *dst = (long) data->param2;
3044                 return -1;
3045         }
3046
3047         if (data->param3 && *dst > (long) data->param3) {
3048                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
3049                            "max_value=%ld)", line, data->name, *dst,
3050                            (long) data->param3);
3051                 *dst = (long) data->param3;
3052                 return -1;
3053         }
3054
3055         return 0;
3056 }
3057
3058
3059 static int wpa_global_config_parse_str(const struct global_parse_data *data,
3060                                        struct wpa_config *config, int line,
3061                                        const char *pos)
3062 {
3063         size_t len;
3064         char **dst, *tmp;
3065
3066         len = os_strlen(pos);
3067         if (data->param2 && len < (size_t) data->param2) {
3068                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
3069                            "min_len=%ld)", line, data->name,
3070                            (unsigned long) len, (long) data->param2);
3071                 return -1;
3072         }
3073
3074         if (data->param3 && len > (size_t) data->param3) {
3075                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
3076                            "max_len=%ld)", line, data->name,
3077                            (unsigned long) len, (long) data->param3);
3078                 return -1;
3079         }
3080
3081         tmp = os_strdup(pos);
3082         if (tmp == NULL)
3083                 return -1;
3084
3085         dst = (char **) (((u8 *) config) + (long) data->param1);
3086         os_free(*dst);
3087         *dst = tmp;
3088         wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
3089
3090         return 0;
3091 }
3092
3093
3094 static int wpa_config_process_bgscan(const struct global_parse_data *data,
3095                                      struct wpa_config *config, int line,
3096                                      const char *pos)
3097 {
3098         size_t len;
3099         char *tmp;
3100         int res;
3101
3102         tmp = wpa_config_parse_string(pos, &len);
3103         if (tmp == NULL) {
3104                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s",
3105                            line, data->name);
3106                 return -1;
3107         }
3108
3109         res = wpa_global_config_parse_str(data, config, line, tmp);
3110         os_free(tmp);
3111         return res;
3112 }
3113
3114
3115 static int wpa_global_config_parse_bin(const struct global_parse_data *data,
3116                                        struct wpa_config *config, int line,
3117                                        const char *pos)
3118 {
3119         size_t len;
3120         struct wpabuf **dst, *tmp;
3121
3122         len = os_strlen(pos);
3123         if (len & 0x01)
3124                 return -1;
3125
3126         tmp = wpabuf_alloc(len / 2);
3127         if (tmp == NULL)
3128                 return -1;
3129
3130         if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) {
3131                 wpabuf_free(tmp);
3132                 return -1;
3133         }
3134
3135         dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
3136         wpabuf_free(*dst);
3137         *dst = tmp;
3138         wpa_printf(MSG_DEBUG, "%s", data->name);
3139
3140         return 0;
3141 }
3142
3143
3144 static int wpa_config_process_freq_list(const struct global_parse_data *data,
3145                                         struct wpa_config *config, int line,
3146                                         const char *value)
3147 {
3148         int *freqs;
3149
3150         freqs = wpa_config_parse_int_array(value);
3151         if (freqs == NULL)
3152                 return -1;
3153         if (freqs[0] == 0) {
3154                 os_free(freqs);
3155                 freqs = NULL;
3156         }
3157         os_free(config->freq_list);
3158         config->freq_list = freqs;
3159         return 0;
3160 }
3161
3162
3163 #ifdef CONFIG_P2P
3164 static int wpa_global_config_parse_ipv4(const struct global_parse_data *data,
3165                                         struct wpa_config *config, int line,
3166                                         const char *pos)
3167 {
3168         u32 *dst;
3169         struct hostapd_ip_addr addr;
3170
3171         if (hostapd_parse_ip_addr(pos, &addr) < 0)
3172                 return -1;
3173         if (addr.af != AF_INET)
3174                 return -1;
3175
3176         dst = (u32 *) (((u8 *) config) + (long) data->param1);
3177         os_memcpy(dst, &addr.u.v4.s_addr, 4);
3178         wpa_printf(MSG_DEBUG, "%s = 0x%x", data->name,
3179                    WPA_GET_BE32((u8 *) dst));
3180
3181         return 0;
3182 }
3183 #endif /* CONFIG_P2P */
3184
3185
3186 static int wpa_config_process_country(const struct global_parse_data *data,
3187                                       struct wpa_config *config, int line,
3188                                       const char *pos)
3189 {
3190         if (!pos[0] || !pos[1]) {
3191                 wpa_printf(MSG_DEBUG, "Invalid country set");
3192                 return -1;
3193         }
3194         config->country[0] = pos[0];
3195         config->country[1] = pos[1];
3196         wpa_printf(MSG_DEBUG, "country='%c%c'",
3197                    config->country[0], config->country[1]);
3198         return 0;
3199 }
3200
3201
3202 static int wpa_config_process_load_dynamic_eap(
3203         const struct global_parse_data *data, struct wpa_config *config,
3204         int line, const char *so)
3205 {
3206         int ret;
3207         wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
3208         ret = eap_peer_method_load(so);
3209         if (ret == -2) {
3210                 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
3211                            "reloading.");
3212         } else if (ret) {
3213                 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
3214                            "method '%s'.", line, so);
3215                 return -1;
3216         }
3217
3218         return 0;
3219 }
3220
3221
3222 #ifdef CONFIG_WPS
3223
3224 static int wpa_config_process_uuid(const struct global_parse_data *data,
3225                                    struct wpa_config *config, int line,
3226                                    const char *pos)
3227 {
3228         char buf[40];
3229         if (uuid_str2bin(pos, config->uuid)) {
3230                 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
3231                 return -1;
3232         }
3233         uuid_bin2str(config->uuid, buf, sizeof(buf));
3234         wpa_printf(MSG_DEBUG, "uuid=%s", buf);
3235         return 0;
3236 }
3237
3238
3239 static int wpa_config_process_device_type(
3240         const struct global_parse_data *data,
3241         struct wpa_config *config, int line, const char *pos)
3242 {
3243         return wps_dev_type_str2bin(pos, config->device_type);
3244 }
3245
3246
3247 static int wpa_config_process_os_version(const struct global_parse_data *data,
3248                                          struct wpa_config *config, int line,
3249                                          const char *pos)
3250 {
3251         if (hexstr2bin(pos, config->os_version, 4)) {
3252                 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
3253                 return -1;
3254         }
3255         wpa_printf(MSG_DEBUG, "os_version=%08x",
3256                    WPA_GET_BE32(config->os_version));
3257         return 0;
3258 }
3259
3260
3261 static int wpa_config_process_wps_vendor_ext_m1(
3262         const struct global_parse_data *data,
3263         struct wpa_config *config, int line, const char *pos)
3264 {
3265         struct wpabuf *tmp;
3266         int len = os_strlen(pos) / 2;
3267         u8 *p;
3268
3269         if (!len) {
3270                 wpa_printf(MSG_ERROR, "Line %d: "
3271                            "invalid wps_vendor_ext_m1", line);
3272                 return -1;
3273         }
3274
3275         tmp = wpabuf_alloc(len);
3276         if (tmp) {
3277                 p = wpabuf_put(tmp, len);
3278
3279                 if (hexstr2bin(pos, p, len)) {
3280                         wpa_printf(MSG_ERROR, "Line %d: "
3281                                    "invalid wps_vendor_ext_m1", line);
3282                         wpabuf_free(tmp);
3283                         return -1;
3284                 }
3285
3286                 wpabuf_free(config->wps_vendor_ext_m1);
3287                 config->wps_vendor_ext_m1 = tmp;
3288         } else {
3289                 wpa_printf(MSG_ERROR, "Can not allocate "
3290                            "memory for wps_vendor_ext_m1");
3291                 return -1;
3292         }
3293
3294         return 0;
3295 }
3296
3297 #endif /* CONFIG_WPS */
3298
3299 #ifdef CONFIG_P2P
3300 static int wpa_config_process_sec_device_type(
3301         const struct global_parse_data *data,
3302         struct wpa_config *config, int line, const char *pos)
3303 {
3304         int idx;
3305
3306         if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
3307                 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
3308                            "items", line);
3309                 return -1;
3310         }
3311
3312         idx = config->num_sec_device_types;
3313
3314         if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
3315                 return -1;
3316
3317         config->num_sec_device_types++;
3318         return 0;
3319 }
3320
3321
3322 static int wpa_config_process_p2p_pref_chan(
3323         const struct global_parse_data *data,
3324         struct wpa_config *config, int line, const char *pos)
3325 {
3326         struct p2p_channel *pref = NULL, *n;
3327         unsigned int num = 0;
3328         const char *pos2;
3329         u8 op_class, chan;
3330
3331         /* format: class:chan,class:chan,... */
3332
3333         while (*pos) {
3334                 op_class = atoi(pos);
3335                 pos2 = os_strchr(pos, ':');
3336                 if (pos2 == NULL)
3337                         goto fail;
3338                 pos2++;
3339                 chan = atoi(pos2);
3340
3341                 n = os_realloc_array(pref, num + 1,
3342                                      sizeof(struct p2p_channel));
3343                 if (n == NULL)
3344                         goto fail;
3345                 pref = n;
3346                 pref[num].op_class = op_class;
3347                 pref[num].chan = chan;
3348                 num++;
3349
3350                 pos = os_strchr(pos2, ',');
3351                 if (pos == NULL)
3352                         break;
3353                 pos++;
3354         }
3355
3356         os_free(config->p2p_pref_chan);
3357         config->p2p_pref_chan = pref;
3358         config->num_p2p_pref_chan = num;
3359         wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
3360                     (u8 *) config->p2p_pref_chan,
3361                     config->num_p2p_pref_chan * sizeof(struct p2p_channel));
3362
3363         return 0;
3364
3365 fail:
3366         os_free(pref);
3367         wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
3368         return -1;
3369 }
3370
3371
3372 static int wpa_config_process_p2p_no_go_freq(
3373         const struct global_parse_data *data,
3374         struct wpa_config *config, int line, const char *pos)
3375 {
3376         int ret;
3377
3378         ret = freq_range_list_parse(&config->p2p_no_go_freq, pos);
3379         if (ret < 0) {
3380                 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_no_go_freq", line);
3381                 return -1;
3382         }
3383
3384         wpa_printf(MSG_DEBUG, "P2P: p2p_no_go_freq with %u items",
3385                    config->p2p_no_go_freq.num);
3386
3387         return 0;
3388 }
3389
3390 #endif /* CONFIG_P2P */
3391
3392
3393 static int wpa_config_process_hessid(
3394         const struct global_parse_data *data,
3395         struct wpa_config *config, int line, const char *pos)
3396 {
3397         if (hwaddr_aton2(pos, config->hessid) < 0) {
3398                 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
3399                            line, pos);
3400                 return -1;
3401         }
3402
3403         return 0;
3404 }
3405
3406
3407 static int wpa_config_process_sae_groups(
3408         const struct global_parse_data *data,
3409         struct wpa_config *config, int line, const char *pos)
3410 {
3411         int *groups = wpa_config_parse_int_array(pos);
3412         if (groups == NULL) {
3413                 wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'",
3414                            line, pos);
3415                 return -1;
3416         }
3417
3418         os_free(config->sae_groups);
3419         config->sae_groups = groups;
3420
3421         return 0;
3422 }
3423
3424
3425 static int wpa_config_process_ap_vendor_elements(
3426         const struct global_parse_data *data,
3427         struct wpa_config *config, int line, const char *pos)
3428 {
3429         struct wpabuf *tmp;
3430         int len = os_strlen(pos) / 2;
3431         u8 *p;
3432
3433         if (!len) {
3434                 wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements",
3435                            line);
3436                 return -1;
3437         }
3438
3439         tmp = wpabuf_alloc(len);
3440         if (tmp) {
3441                 p = wpabuf_put(tmp, len);
3442
3443                 if (hexstr2bin(pos, p, len)) {
3444                         wpa_printf(MSG_ERROR, "Line %d: invalid "
3445                                    "ap_vendor_elements", line);
3446                         wpabuf_free(tmp);
3447                         return -1;
3448                 }
3449
3450                 wpabuf_free(config->ap_vendor_elements);
3451                 config->ap_vendor_elements = tmp;
3452         } else {
3453                 wpa_printf(MSG_ERROR, "Cannot allocate memory for "
3454                            "ap_vendor_elements");
3455                 return -1;
3456         }
3457
3458         return 0;
3459 }
3460
3461
3462 #ifdef CONFIG_CTRL_IFACE
3463 static int wpa_config_process_no_ctrl_interface(
3464         const struct global_parse_data *data,
3465         struct wpa_config *config, int line, const char *pos)
3466 {
3467         wpa_printf(MSG_DEBUG, "no_ctrl_interface -> ctrl_interface=NULL");
3468         os_free(config->ctrl_interface);
3469         config->ctrl_interface = NULL;
3470         return 0;
3471 }
3472 #endif /* CONFIG_CTRL_IFACE */
3473
3474
3475 #ifdef OFFSET
3476 #undef OFFSET
3477 #endif /* OFFSET */
3478 /* OFFSET: Get offset of a variable within the wpa_config structure */
3479 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
3480
3481 #define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL
3482 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL
3483 #define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f)
3484 #define INT(f) _INT(f), NULL, NULL
3485 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
3486 #define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f)
3487 #define STR(f) _STR(f), NULL, NULL
3488 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
3489 #define BIN(f) #f, wpa_global_config_parse_bin, OFFSET(f), NULL, NULL
3490 #define IPV4(f) #f, wpa_global_config_parse_ipv4, OFFSET(f), NULL, NULL
3491
3492 static const struct global_parse_data global_fields[] = {
3493 #ifdef CONFIG_CTRL_IFACE
3494         { STR(ctrl_interface), 0 },
3495         { FUNC_NO_VAR(no_ctrl_interface), 0 },
3496         { STR(ctrl_interface_group), 0 } /* deprecated */,
3497 #endif /* CONFIG_CTRL_IFACE */
3498         { INT_RANGE(eapol_version, 1, 2), 0 },
3499         { INT(ap_scan), 0 },
3500         { FUNC(bgscan), 0 },
3501         { INT(disable_scan_offload), 0 },
3502         { INT(fast_reauth), 0 },
3503         { STR(opensc_engine_path), 0 },
3504         { STR(pkcs11_engine_path), 0 },
3505         { STR(pkcs11_module_path), 0 },
3506         { STR(pcsc_reader), 0 },
3507         { STR(pcsc_pin), 0 },
3508         { INT(external_sim), 0 },
3509         { STR(driver_param), 0 },
3510         { INT(dot11RSNAConfigPMKLifetime), 0 },
3511         { INT(dot11RSNAConfigPMKReauthThreshold), 0 },
3512         { INT(dot11RSNAConfigSATimeout), 0 },
3513 #ifndef CONFIG_NO_CONFIG_WRITE
3514         { INT(update_config), 0 },
3515 #endif /* CONFIG_NO_CONFIG_WRITE */
3516         { FUNC_NO_VAR(load_dynamic_eap), 0 },
3517 #ifdef CONFIG_WPS
3518         { FUNC(uuid), CFG_CHANGED_UUID },
3519         { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME },
3520         { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
3521         { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
3522         { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
3523         { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
3524         { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
3525         { FUNC(os_version), CFG_CHANGED_OS_VERSION },
3526         { STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
3527         { INT_RANGE(wps_cred_processing, 0, 2), 0 },
3528         { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
3529 #endif /* CONFIG_WPS */
3530 #ifdef CONFIG_P2P
3531         { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
3532         { INT(p2p_listen_reg_class), 0 },
3533         { INT(p2p_listen_channel), 0 },
3534         { INT(p2p_oper_reg_class), CFG_CHANGED_P2P_OPER_CHANNEL },
3535         { INT(p2p_oper_channel), CFG_CHANGED_P2P_OPER_CHANNEL },
3536         { INT_RANGE(p2p_go_intent, 0, 15), 0 },
3537         { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
3538         { INT_RANGE(persistent_reconnect, 0, 1), 0 },
3539         { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
3540         { INT(p2p_group_idle), 0 },
3541         { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
3542         { FUNC(p2p_no_go_freq), CFG_CHANGED_P2P_PREF_CHAN },
3543         { INT_RANGE(p2p_add_cli_chan, 0, 1), 0 },
3544         { INT(p2p_go_ht40), 0 },
3545         { INT(p2p_go_vht), 0 },
3546         { INT(p2p_disabled), 0 },
3547         { INT(p2p_no_group_iface), 0 },
3548         { INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 },
3549         { IPV4(ip_addr_go), 0 },
3550         { IPV4(ip_addr_mask), 0 },
3551         { IPV4(ip_addr_start), 0 },
3552         { IPV4(ip_addr_end), 0 },
3553 #endif /* CONFIG_P2P */
3554         { FUNC(country), CFG_CHANGED_COUNTRY },
3555         { INT(bss_max_count), 0 },
3556         { INT(bss_expiration_age), 0 },
3557         { INT(bss_expiration_scan_count), 0 },
3558         { INT_RANGE(filter_ssids, 0, 1), 0 },
3559         { INT_RANGE(filter_rssi, -100, 0), 0 },
3560         { INT(max_num_sta), 0 },
3561         { INT_RANGE(disassoc_low_ack, 0, 1), 0 },
3562 #ifdef CONFIG_HS20
3563         { INT_RANGE(hs20, 0, 1), 0 },
3564 #endif /* CONFIG_HS20 */
3565         { INT_RANGE(interworking, 0, 1), 0 },
3566         { FUNC(hessid), 0 },
3567         { INT_RANGE(access_network_type, 0, 15), 0 },
3568         { INT_RANGE(pbc_in_m1, 0, 1), 0 },
3569         { STR(autoscan), 0 },
3570         { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff),
3571           CFG_CHANGED_NFC_PASSWORD_TOKEN },
3572         { BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3573         { BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3574         { BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3575         { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
3576         { INT(p2p_go_max_inactivity), 0 },
3577         { INT_RANGE(auto_interworking, 0, 1), 0 },
3578         { INT(okc), 0 },
3579         { INT(pmf), 0 },
3580         { FUNC(sae_groups), 0 },
3581         { INT(dtim_period), 0 },
3582         { INT(beacon_int), 0 },
3583         { FUNC(ap_vendor_elements), 0 },
3584         { INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
3585         { FUNC(freq_list), 0 },
3586         { INT(scan_cur_freq), 0 },
3587         { INT(sched_scan_interval), 0 },
3588         { INT(tdls_external_control), 0},
3589         { STR(osu_dir), 0 },
3590 };
3591
3592 #undef FUNC
3593 #undef _INT
3594 #undef INT
3595 #undef INT_RANGE
3596 #undef _STR
3597 #undef STR
3598 #undef STR_RANGE
3599 #undef BIN
3600 #undef IPV4
3601 #define NUM_GLOBAL_FIELDS ARRAY_SIZE(global_fields)
3602
3603
3604 int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
3605 {
3606         size_t i;
3607         int ret = 0;
3608
3609         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
3610                 const struct global_parse_data *field = &global_fields[i];
3611                 size_t flen = os_strlen(field->name);
3612                 if (os_strncmp(pos, field->name, flen) != 0 ||
3613                     pos[flen] != '=')
3614                         continue;
3615
3616                 if (field->parser(field, config, line, pos + flen + 1)) {
3617                         wpa_printf(MSG_ERROR, "Line %d: failed to "
3618                                    "parse '%s'.", line, pos);
3619                         ret = -1;
3620                 }
3621                 if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN)
3622                         config->wps_nfc_pw_from_config = 1;
3623                 config->changed_parameters |= field->changed_flag;
3624                 break;
3625         }
3626         if (i == NUM_GLOBAL_FIELDS) {
3627 #ifdef CONFIG_AP
3628                 if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
3629                         char *tmp = os_strchr(pos, '=');
3630                         if (tmp == NULL) {
3631                                 if (line < 0)
3632                                         return -1;
3633                                 wpa_printf(MSG_ERROR, "Line %d: invalid line "
3634                                            "'%s'", line, pos);
3635                                 return -1;
3636                         }
3637                         *tmp++ = '\0';
3638                         if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
3639                                                   tmp)) {
3640                                 wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
3641                                            "AC item", line);
3642                                 return -1;
3643                         }
3644                 }
3645 #endif /* CONFIG_AP */
3646                 if (line < 0)
3647                         return -1;
3648                 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
3649                            line, pos);
3650                 ret = -1;
3651         }
3652
3653         return ret;
3654 }