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 "crypto/sha1.h"
  14 #include "rsn_supp/wpa.h"
  15 #include "eap_peer/eap.h"
  16 #include "p2p/p2p.h"
  17 #include "config.h"
  18
  19
  20 #if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
  21 #define NO_CONFIG_WRITE
  22 #endif
  23
  24 /*
  25  * Structure for network configuration parsing. This data is used to implement
  26  * a generic parser for each network block variable. The table of configuration
  27  * variables is defined below in this file (ssid_fields[]).
  28  */
  29 struct parse_data {
  30         /* Configuration variable name */
  31         char *name;
  32
  33         /* Parser function for this variable */
  34         int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
  35                       int line, const char *value);
  36
  37 #ifndef NO_CONFIG_WRITE
  38         /* Writer function (i.e., to get the variable in text format from
  39          * internal presentation). */
  40         char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
  41 #endif /* NO_CONFIG_WRITE */
  42
  43         /* Variable specific parameters for the parser. */
  44         void *param1, *param2, *param3, *param4;
  45
  46         /* 0 = this variable can be included in debug output and ctrl_iface
  47          * 1 = this variable contains key/private data and it must not be
  48          *     included in debug output unless explicitly requested. In
  49          *     addition, this variable will not be readable through the
  50          *     ctrl_iface.
  51          */
  52         int key_data;
  53 };
  54
  55
  56 static int wpa_config_parse_str(const struct parse_data *data,
  57                                 struct wpa_ssid *ssid,
  58                                 int line, const char *value)
  59 {
  60         size_t res_len, *dst_len;
  61         char **dst, *tmp;
  62
  63         if (os_strcmp(value, "NULL") == 0) {
  64                 wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
  65                            data->name);
  66                 tmp = NULL;
  67                 res_len = 0;
  68                 goto set;
  69         }
  70
  71         tmp = wpa_config_parse_string(value, &res_len);
  72         if (tmp == NULL) {
  73                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
  74                            line, data->name,
  75                            data->key_data ? "[KEY DATA REMOVED]" : value);
  76                 return -1;
  77         }
  78
  79         if (data->key_data) {
  80                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
  81                                       (u8 *) tmp, res_len);
  82         } else {
  83                 wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
  84                                   (u8 *) tmp, res_len);
  85         }
  86
  87         if (data->param3 && res_len < (size_t) data->param3) {
  88                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
  89                            "min_len=%ld)", line, data->name,
  90                            (unsigned long) res_len, (long) data->param3);
  91                 os_free(tmp);
  92                 return -1;
  93         }
  94
  95         if (data->param4 && res_len > (size_t) data->param4) {
  96                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
  97                            "max_len=%ld)", line, data->name,
  98                            (unsigned long) res_len, (long) data->param4);
  99                 os_free(tmp);
 100                 return -1;
 101         }
 102
 103 set:
 104         dst = (char **) (((u8 *) ssid) + (long) data->param1);
 105         dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
 106         os_free(*dst);
 107         *dst = tmp;
 108         if (data->param2)
 109                 *dst_len = res_len;
 110
 111         return 0;
 112 }
 113
 114
 115 #ifndef NO_CONFIG_WRITE
 116 static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
 117 {
 118         char *buf;
 119
 120         buf = os_malloc(len + 3);
 121         if (buf == NULL)
 122                 return NULL;
 123         buf[0] = '"';
 124         os_memcpy(buf + 1, value, len);
 125         buf[len + 1] = '"';
 126         buf[len + 2] = '\0';
 127
 128         return buf;
 129 }
 130
 131
 132 static char * wpa_config_write_string_hex(const u8 *value, size_t len)
 133 {
 134         char *buf;
 135
 136         buf = os_zalloc(2 * len + 1);
 137         if (buf == NULL)
 138                 return NULL;
 139         wpa_snprintf_hex(buf, 2 * len + 1, value, len);
 140
 141         return buf;
 142 }
 143
 144
 145 static char * wpa_config_write_string(const u8 *value, size_t len)
 146 {
 147         if (value == NULL)
 148                 return NULL;
 149
 150         if (is_hex(value, len))
 151                 return wpa_config_write_string_hex(value, len);
 152         else
 153                 return wpa_config_write_string_ascii(value, len);
 154 }
 155
 156
 157 static char * wpa_config_write_str(const struct parse_data *data,
 158                                    struct wpa_ssid *ssid)
 159 {
 160         size_t len;
 161         char **src;
 162
 163         src = (char **) (((u8 *) ssid) + (long) data->param1);
 164         if (*src == NULL)
 165                 return NULL;
 166
 167         if (data->param2)
 168                 len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
 169         else
 170                 len = os_strlen(*src);
 171
 172         return wpa_config_write_string((const u8 *) *src, len);
 173 }
 174 #endif /* NO_CONFIG_WRITE */
 175
 176
 177 static int wpa_config_parse_int(const struct parse_data *data,
 178                                 struct wpa_ssid *ssid,
 179                                 int line, const char *value)
 180 {
 181         int val, *dst;
 182         char *end;
 183
 184         dst = (int *) (((u8 *) ssid) + (long) data->param1);
 185         val = strtol(value, &end, 0);
 186         if (*end) {
 187                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
 188                            line, value);
 189                 return -1;
 190         }
 191         *dst = val;
 192         wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
 193
 194         if (data->param3 && *dst < (long) data->param3) {
 195                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
 196                            "min_value=%ld)", line, data->name, *dst,
 197                            (long) data->param3);
 198                 *dst = (long) data->param3;
 199                 return -1;
 200         }
 201
 202         if (data->param4 && *dst > (long) data->param4) {
 203                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
 204                            "max_value=%ld)", line, data->name, *dst,
 205                            (long) data->param4);
 206                 *dst = (long) data->param4;
 207                 return -1;
 208         }
 209
 210         return 0;
 211 }
 212
 213
 214 #ifndef NO_CONFIG_WRITE
 215 static char * wpa_config_write_int(const struct parse_data *data,
 216                                    struct wpa_ssid *ssid)
 217 {
 218         int *src, res;
 219         char *value;
 220
 221         src = (int *) (((u8 *) ssid) + (long) data->param1);
 222
 223         value = os_malloc(20);
 224         if (value == NULL)
 225                 return NULL;
 226         res = os_snprintf(value, 20, "%d", *src);
 227         if (res < 0 || res >= 20) {
 228                 os_free(value);
 229                 return NULL;
 230         }
 231         value[20 - 1] = '\0';
 232         return value;
 233 }
 234 #endif /* NO_CONFIG_WRITE */
 235
 236
 237 static int wpa_config_parse_bssid(const struct parse_data *data,
 238                                   struct wpa_ssid *ssid, int line,
 239                                   const char *value)
 240 {
 241         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
 242             os_strcmp(value, "any") == 0) {
 243                 ssid->bssid_set = 0;
 244                 wpa_printf(MSG_MSGDUMP, "BSSID any");
 245                 return 0;
 246         }
 247         if (hwaddr_aton(value, ssid->bssid)) {
 248                 wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
 249                            line, value);
 250                 return -1;
 251         }
 252         ssid->bssid_set = 1;
 253         wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
 254         return 0;
 255 }
 256
 257
 258 #ifndef NO_CONFIG_WRITE
 259 static char * wpa_config_write_bssid(const struct parse_data *data,
 260                                      struct wpa_ssid *ssid)
 261 {
 262         char *value;
 263         int res;
 264
 265         if (!ssid->bssid_set)
 266                 return NULL;
 267
 268         value = os_malloc(20);
 269         if (value == NULL)
 270                 return NULL;
 271         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
 272         if (res < 0 || res >= 20) {
 273                 os_free(value);
 274                 return NULL;
 275         }
 276         value[20 - 1] = '\0';
 277         return value;
 278 }
 279 #endif /* NO_CONFIG_WRITE */
 280
 281
 282 static int wpa_config_parse_psk(const struct parse_data *data,
 283                                 struct wpa_ssid *ssid, int line,
 284                                 const char *value)
 285 {
 286 #ifdef CONFIG_EXT_PASSWORD
 287         if (os_strncmp(value, "ext:", 4) == 0) {
 288                 os_free(ssid->passphrase);
 289                 ssid->passphrase = NULL;
 290                 ssid->psk_set = 0;
 291                 os_free(ssid->ext_psk);
 292                 ssid->ext_psk = os_strdup(value + 4);
 293                 if (ssid->ext_psk == NULL)
 294                         return -1;
 295                 wpa_printf(MSG_DEBUG, "PSK: External password '%s'",
 296                            ssid->ext_psk);
 297                 return 0;
 298         }
 299 #endif /* CONFIG_EXT_PASSWORD */
 300
 301         if (*value == '"') {
 302 #ifndef CONFIG_NO_PBKDF2
 303                 const char *pos;
 304                 size_t len;
 305
 306                 value++;
 307                 pos = os_strrchr(value, '"');
 308                 if (pos)
 309                         len = pos - value;
 310                 else
 311                         len = os_strlen(value);
 312                 if (len < 8 || len > 63) {
 313                         wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
 314                                    "length %lu (expected: 8..63) '%s'.",
 315                                    line, (unsigned long) len, value);
 316                         return -1;
 317                 }
 318                 wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
 319                                       (u8 *) value, len);
 320                 if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
 321                     os_memcmp(ssid->passphrase, value, len) == 0)
 322                         return 0;
 323                 ssid->psk_set = 0;
 324                 os_free(ssid->passphrase);
 325                 ssid->passphrase = dup_binstr(value, len);
 326                 if (ssid->passphrase == NULL)
 327                         return -1;
 328                 return 0;
 329 #else /* CONFIG_NO_PBKDF2 */
 330                 wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
 331                            "supported.", line);
 332                 return -1;
 333 #endif /* CONFIG_NO_PBKDF2 */
 334         }
 335
 336         if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
 337             value[PMK_LEN * 2] != '\0') {
 338                 wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
 339                            line, value);
 340                 return -1;
 341         }
 342
 343         os_free(ssid->passphrase);
 344         ssid->passphrase = NULL;
 345
 346         ssid->psk_set = 1;
 347         wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
 348         return 0;
 349 }
 350
 351
 352 #ifndef NO_CONFIG_WRITE
 353 static char * wpa_config_write_psk(const struct parse_data *data,
 354                                    struct wpa_ssid *ssid)
 355 {
 356 #ifdef CONFIG_EXT_PASSWORD
 357         if (ssid->ext_psk) {
 358                 size_t len = 4 + os_strlen(ssid->ext_psk) + 1;
 359                 char *buf = os_malloc(len);
 360                 if (buf == NULL)
 361                         return NULL;
 362                 os_snprintf(buf, len, "ext:%s", ssid->ext_psk);
 363                 return buf;
 364         }
 365 #endif /* CONFIG_EXT_PASSWORD */
 366
 367         if (ssid->passphrase)
 368                 return wpa_config_write_string_ascii(
 369                         (const u8 *) ssid->passphrase,
 370                         os_strlen(ssid->passphrase));
 371
 372         if (ssid->psk_set)
 373                 return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
 374
 375         return NULL;
 376 }
 377 #endif /* NO_CONFIG_WRITE */
 378
 379
 380 static int wpa_config_parse_proto(const struct parse_data *data,
 381                                   struct wpa_ssid *ssid, int line,
 382                                   const char *value)
 383 {
 384         int val = 0, last, errors = 0;
 385         char *start, *end, *buf;
 386
 387         buf = os_strdup(value);
 388         if (buf == NULL)
 389                 return -1;
 390         start = buf;
 391
 392         while (*start != '\0') {
 393                 while (*start == ' ' || *start == '\t')
 394                         start++;
 395                 if (*start == '\0')
 396                         break;
 397                 end = start;
 398                 while (*end != ' ' && *end != '\t' && *end != '\0')
 399                         end++;
 400                 last = *end == '\0';
 401                 *end = '\0';
 402                 if (os_strcmp(start, "WPA") == 0)
 403                         val |= WPA_PROTO_WPA;
 404                 else if (os_strcmp(start, "RSN") == 0 ||
 405                          os_strcmp(start, "WPA2") == 0)
 406                         val |= WPA_PROTO_RSN;
 407                 else {
 408                         wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
 409                                    line, start);
 410                         errors++;
 411                 }
 412
 413                 if (last)
 414                         break;
 415                 start = end + 1;
 416         }
 417         os_free(buf);
 418
 419         if (val == 0) {
 420                 wpa_printf(MSG_ERROR,
 421                            "Line %d: no proto values configured.", line);
 422                 errors++;
 423         }
 424
 425         wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
 426         ssid->proto = val;
 427         return errors ? -1 : 0;
 428 }
 429
 430
 431 #ifndef NO_CONFIG_WRITE
 432 static char * wpa_config_write_proto(const struct parse_data *data,
 433                                      struct wpa_ssid *ssid)
 434 {
 435         int first = 1, ret;
 436         char *buf, *pos, *end;
 437
 438         pos = buf = os_zalloc(10);
 439         if (buf == NULL)
 440                 return NULL;
 441         end = buf + 10;
 442
 443         if (ssid->proto & WPA_PROTO_WPA) {
 444                 ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " ");
 445                 if (ret < 0 || ret >= end - pos)
 446                         return buf;
 447                 pos += ret;
 448                 first = 0;
 449         }
 450
 451         if (ssid->proto & WPA_PROTO_RSN) {
 452                 ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " ");
 453                 if (ret < 0 || ret >= end - pos)
 454                         return buf;
 455                 pos += ret;
 456                 first = 0;
 457         }
 458
 459         return buf;
 460 }
 461 #endif /* NO_CONFIG_WRITE */
 462
 463
 464 static int wpa_config_parse_key_mgmt(const struct parse_data *data,
 465                                      struct wpa_ssid *ssid, int line,
 466                                      const char *value)
 467 {
 468         int val = 0, last, errors = 0;
 469         char *start, *end, *buf;
 470
 471         buf = os_strdup(value);
 472         if (buf == NULL)
 473                 return -1;
 474         start = buf;
 475
 476         while (*start != '\0') {
 477                 while (*start == ' ' || *start == '\t')
 478                         start++;
 479                 if (*start == '\0')
 480                         break;
 481                 end = start;
 482                 while (*end != ' ' && *end != '\t' && *end != '\0')
 483                         end++;
 484                 last = *end == '\0';
 485                 *end = '\0';
 486                 if (os_strcmp(start, "WPA-PSK") == 0)
 487                         val |= WPA_KEY_MGMT_PSK;
 488                 else if (os_strcmp(start, "WPA-EAP") == 0)
 489                         val |= WPA_KEY_MGMT_IEEE8021X;
 490                 else if (os_strcmp(start, "IEEE8021X") == 0)
 491                         val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
 492                 else if (os_strcmp(start, "NONE") == 0)
 493                         val |= WPA_KEY_MGMT_NONE;
 494                 else if (os_strcmp(start, "WPA-NONE") == 0)
 495                         val |= WPA_KEY_MGMT_WPA_NONE;
 496 #ifdef CONFIG_IEEE80211R
 497                 else if (os_strcmp(start, "FT-PSK") == 0)
 498                         val |= WPA_KEY_MGMT_FT_PSK;
 499                 else if (os_strcmp(start, "FT-EAP") == 0)
 500                         val |= WPA_KEY_MGMT_FT_IEEE8021X;
 501 #endif /* CONFIG_IEEE80211R */
 502 #ifdef CONFIG_IEEE80211W
 503                 else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
 504                         val |= WPA_KEY_MGMT_PSK_SHA256;
 505                 else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
 506                         val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
 507 #endif /* CONFIG_IEEE80211W */
 508 #ifdef CONFIG_WPS
 509                 else if (os_strcmp(start, "WPS") == 0)
 510                         val |= WPA_KEY_MGMT_WPS;
 511 #endif /* CONFIG_WPS */
 512 #ifdef CONFIG_SAE
 513                 else if (os_strcmp(start, "SAE") == 0)
 514                         val |= WPA_KEY_MGMT_SAE;
 515                 else if (os_strcmp(start, "FT-SAE") == 0)
 516                         val |= WPA_KEY_MGMT_FT_SAE;
 517 #endif /* CONFIG_SAE */
 518                 else {
 519                         wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
 520                                    line, start);
 521                         errors++;
 522                 }
 523
 524                 if (last)
 525                         break;
 526                 start = end + 1;
 527         }
 528         os_free(buf);
 529
 530         if (val == 0) {
 531                 wpa_printf(MSG_ERROR,
 532                            "Line %d: no key_mgmt values configured.", line);
 533                 errors++;
 534         }
 535
 536         wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
 537         ssid->key_mgmt = val;
 538         return errors ? -1 : 0;
 539 }
 540
 541
 542 #ifndef NO_CONFIG_WRITE
 543 static char * wpa_config_write_key_mgmt(const struct parse_data *data,
 544                                         struct wpa_ssid *ssid)
 545 {
 546         char *buf, *pos, *end;
 547         int ret;
 548
 549         pos = buf = os_zalloc(100);
 550         if (buf == NULL)
 551                 return NULL;
 552         end = buf + 100;
 553
 554         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
 555                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
 556                                   pos == buf ? "" : " ");
 557                 if (ret < 0 || ret >= end - pos) {
 558                         end[-1] = '\0';
 559                         return buf;
 560                 }
 561                 pos += ret;
 562         }
 563
 564         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
 565                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
 566                                   pos == buf ? "" : " ");
 567                 if (ret < 0 || ret >= end - pos) {
 568                         end[-1] = '\0';
 569                         return buf;
 570                 }
 571                 pos += ret;
 572         }
 573
 574         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 575                 ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
 576                                   pos == buf ? "" : " ");
 577                 if (ret < 0 || ret >= end - pos) {
 578                         end[-1] = '\0';
 579                         return buf;
 580                 }
 581                 pos += ret;
 582         }
 583
 584         if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
 585                 ret = os_snprintf(pos, end - pos, "%sNONE",
 586                                   pos == buf ? "" : " ");
 587                 if (ret < 0 || ret >= end - pos) {
 588                         end[-1] = '\0';
 589                         return buf;
 590                 }
 591                 pos += ret;
 592         }
 593
 594         if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
 595                 ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
 596                                   pos == buf ? "" : " ");
 597                 if (ret < 0 || ret >= end - pos) {
 598                         end[-1] = '\0';
 599                         return buf;
 600                 }
 601                 pos += ret;
 602         }
 603
 604 #ifdef CONFIG_IEEE80211R
 605         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) {
 606                 ret = os_snprintf(pos, end - pos, "%sFT-PSK",
 607                                   pos == buf ? "" : " ");
 608                 if (ret < 0 || ret >= end - pos) {
 609                         end[-1] = '\0';
 610                         return buf;
 611                 }
 612                 pos += ret;
 613         }
 614
 615         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
 616                 ret = os_snprintf(pos, end - pos, "%sFT-EAP",
 617                                   pos == buf ? "" : " ");
 618                 if (ret < 0 || ret >= end - pos) {
 619                         end[-1] = '\0';
 620                         return buf;
 621                 }
 622                 pos += ret;
 623         }
 624 #endif /* CONFIG_IEEE80211R */
 625
 626 #ifdef CONFIG_IEEE80211W
 627         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
 628                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
 629                                   pos == buf ? "" : " ");
 630                 if (ret < 0 || ret >= end - pos) {
 631                         end[-1] = '\0';
 632                         return buf;
 633                 }
 634                 pos += ret;
 635         }
 636
 637         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 638                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
 639                                   pos == buf ? "" : " ");
 640                 if (ret < 0 || ret >= end - pos) {
 641                         end[-1] = '\0';
 642                         return buf;
 643                 }
 644                 pos += ret;
 645         }
 646 #endif /* CONFIG_IEEE80211W */
 647
 648 #ifdef CONFIG_WPS
 649         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 650                 ret = os_snprintf(pos, end - pos, "%sWPS",
 651                                   pos == buf ? "" : " ");
 652                 if (ret < 0 || ret >= end - pos) {
 653                         end[-1] = '\0';
 654                         return buf;
 655                 }
 656                 pos += ret;
 657         }
 658 #endif /* CONFIG_WPS */
 659
 660         return buf;
 661 }
 662 #endif /* NO_CONFIG_WRITE */
 663
 664
 665 static int wpa_config_parse_cipher(int line, const char *value)
 666 {
 667         int val = wpa_parse_cipher(value);
 668         if (val < 0) {
 669                 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
 670                            line, value);
 671                 return -1;
 672         }
 673         if (val == 0) {
 674                 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
 675                            line);
 676                 return -1;
 677         }
 678         return val;
 679 }
 680
 681
 682 #ifndef NO_CONFIG_WRITE
 683 static char * wpa_config_write_cipher(int cipher)
 684 {
 685         char *buf = os_zalloc(50);
 686         if (buf == NULL)
 687                 return NULL;
 688
 689         if (wpa_write_ciphers(buf, buf + 50, cipher, " ") < 0) {
 690                 os_free(buf);
 691                 return NULL;
 692         }
 693
 694         return buf;
 695 }
 696 #endif /* NO_CONFIG_WRITE */
 697
 698
 699 static int wpa_config_parse_pairwise(const struct parse_data *data,
 700                                      struct wpa_ssid *ssid, int line,
 701                                      const char *value)
 702 {
 703         int val;
 704         val = wpa_config_parse_cipher(line, value);
 705         if (val == -1)
 706                 return -1;
 707         if (val & ~WPA_ALLOWED_PAIRWISE_CIPHERS) {
 708                 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
 709                            "(0x%x).", line, val);
 710                 return -1;
 711         }
 712
 713         wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
 714         ssid->pairwise_cipher = val;
 715         return 0;
 716 }
 717
 718
 719 #ifndef NO_CONFIG_WRITE
 720 static char * wpa_config_write_pairwise(const struct parse_data *data,
 721                                         struct wpa_ssid *ssid)
 722 {
 723         return wpa_config_write_cipher(ssid->pairwise_cipher);
 724 }
 725 #endif /* NO_CONFIG_WRITE */
 726
 727
 728 static int wpa_config_parse_group(const struct parse_data *data,
 729                                   struct wpa_ssid *ssid, int line,
 730                                   const char *value)
 731 {
 732         int val;
 733         val = wpa_config_parse_cipher(line, value);
 734         if (val == -1)
 735                 return -1;
 736         if (val & ~WPA_ALLOWED_GROUP_CIPHERS) {
 737                 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
 738                            "(0x%x).", line, val);
 739                 return -1;
 740         }
 741
 742         wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
 743         ssid->group_cipher = val;
 744         return 0;
 745 }
 746
 747
 748 #ifndef NO_CONFIG_WRITE
 749 static char * wpa_config_write_group(const struct parse_data *data,
 750                                      struct wpa_ssid *ssid)
 751 {
 752         return wpa_config_write_cipher(ssid->group_cipher);
 753 }
 754 #endif /* NO_CONFIG_WRITE */
 755
 756
 757 static int wpa_config_parse_auth_alg(const struct parse_data *data,
 758                                      struct wpa_ssid *ssid, int line,
 759                                      const char *value)
 760 {
 761         int val = 0, last, errors = 0;
 762         char *start, *end, *buf;
 763
 764         buf = os_strdup(value);
 765         if (buf == NULL)
 766                 return -1;
 767         start = buf;
 768
 769         while (*start != '\0') {
 770                 while (*start == ' ' || *start == '\t')
 771                         start++;
 772                 if (*start == '\0')
 773                         break;
 774                 end = start;
 775                 while (*end != ' ' && *end != '\t' && *end != '\0')
 776                         end++;
 777                 last = *end == '\0';
 778                 *end = '\0';
 779                 if (os_strcmp(start, "OPEN") == 0)
 780                         val |= WPA_AUTH_ALG_OPEN;
 781                 else if (os_strcmp(start, "SHARED") == 0)
 782                         val |= WPA_AUTH_ALG_SHARED;
 783                 else if (os_strcmp(start, "LEAP") == 0)
 784                         val |= WPA_AUTH_ALG_LEAP;
 785                 else {
 786                         wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
 787                                    line, start);
 788                         errors++;
 789                 }
 790
 791                 if (last)
 792                         break;
 793                 start = end + 1;
 794         }
 795         os_free(buf);
 796
 797         if (val == 0) {
 798                 wpa_printf(MSG_ERROR,
 799                            "Line %d: no auth_alg values configured.", line);
 800                 errors++;
 801         }
 802
 803         wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
 804         ssid->auth_alg = val;
 805         return errors ? -1 : 0;
 806 }
 807
 808
 809 #ifndef NO_CONFIG_WRITE
 810 static char * wpa_config_write_auth_alg(const struct parse_data *data,
 811                                         struct wpa_ssid *ssid)
 812 {
 813         char *buf, *pos, *end;
 814         int ret;
 815
 816         pos = buf = os_zalloc(30);
 817         if (buf == NULL)
 818                 return NULL;
 819         end = buf + 30;
 820
 821         if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
 822                 ret = os_snprintf(pos, end - pos, "%sOPEN",
 823                                   pos == buf ? "" : " ");
 824                 if (ret < 0 || ret >= end - pos) {
 825                         end[-1] = '\0';
 826                         return buf;
 827                 }
 828                 pos += ret;
 829         }
 830
 831         if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
 832                 ret = os_snprintf(pos, end - pos, "%sSHARED",
 833                                   pos == buf ? "" : " ");
 834                 if (ret < 0 || ret >= end - pos) {
 835                         end[-1] = '\0';
 836                         return buf;
 837                 }
 838                 pos += ret;
 839         }
 840
 841         if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
 842                 ret = os_snprintf(pos, end - pos, "%sLEAP",
 843                                   pos == buf ? "" : " ");
 844                 if (ret < 0 || ret >= end - pos) {
 845                         end[-1] = '\0';
 846                         return buf;
 847                 }
 848                 pos += ret;
 849         }
 850
 851         return buf;
 852 }
 853 #endif /* NO_CONFIG_WRITE */
 854
 855
 856 static int * wpa_config_parse_int_array(const char *value)
 857 {
 858         int *freqs;
 859         size_t used, len;
 860         const char *pos;
 861
 862         used = 0;
 863         len = 10;
 864         freqs = os_calloc(len + 1, sizeof(int));
 865         if (freqs == NULL)
 866                 return NULL;
 867
 868         pos = value;
 869         while (pos) {
 870                 while (*pos == ' ')
 871                         pos++;
 872                 if (used == len) {
 873                         int *n;
 874                         size_t i;
 875                         n = os_realloc_array(freqs, len * 2 + 1, sizeof(int));
 876                         if (n == NULL) {
 877                                 os_free(freqs);
 878                                 return NULL;
 879                         }
 880                         for (i = len; i <= len * 2; i++)
 881                                 n[i] = 0;
 882                         freqs = n;
 883                         len *= 2;
 884                 }
 885
 886                 freqs[used] = atoi(pos);
 887                 if (freqs[used] == 0)
 888                         break;
 889                 used++;
 890                 pos = os_strchr(pos + 1, ' ');
 891         }
 892
 893         return freqs;
 894 }
 895
 896
 897 static int wpa_config_parse_scan_freq(const struct parse_data *data,
 898                                       struct wpa_ssid *ssid, int line,
 899                                       const char *value)
 900 {
 901         int *freqs;
 902
 903         freqs = wpa_config_parse_int_array(value);
 904         if (freqs == NULL)
 905                 return -1;
 906         if (freqs[0] == 0) {
 907                 os_free(freqs);
 908                 freqs = NULL;
 909         }
 910         os_free(ssid->scan_freq);
 911         ssid->scan_freq = freqs;
 912
 913         return 0;
 914 }
 915
 916
 917 static int wpa_config_parse_freq_list(const struct parse_data *data,
 918                                       struct wpa_ssid *ssid, int line,
 919                                       const char *value)
 920 {
 921         int *freqs;
 922
 923         freqs = wpa_config_parse_int_array(value);
 924         if (freqs == NULL)
 925                 return -1;
 926         if (freqs[0] == 0) {
 927                 os_free(freqs);
 928                 freqs = NULL;
 929         }
 930         os_free(ssid->freq_list);
 931         ssid->freq_list = freqs;
 932
 933         return 0;
 934 }
 935
 936
 937 #ifndef NO_CONFIG_WRITE
 938 static char * wpa_config_write_freqs(const struct parse_data *data,
 939                                      const int *freqs)
 940 {
 941         char *buf, *pos, *end;
 942         int i, ret;
 943         size_t count;
 944
 945         if (freqs == NULL)
 946                 return NULL;
 947
 948         count = 0;
 949         for (i = 0; freqs[i]; i++)
 950                 count++;
 951
 952         pos = buf = os_zalloc(10 * count + 1);
 953         if (buf == NULL)
 954                 return NULL;
 955         end = buf + 10 * count + 1;
 956
 957         for (i = 0; freqs[i]; i++) {
 958                 ret = os_snprintf(pos, end - pos, "%s%u",
 959                                   i == 0 ? "" : " ", freqs[i]);
 960                 if (ret < 0 || ret >= end - pos) {
 961                         end[-1] = '\0';
 962                         return buf;
 963                 }
 964                 pos += ret;
 965         }
 966
 967         return buf;
 968 }
 969
 970
 971 static char * wpa_config_write_scan_freq(const struct parse_data *data,
 972                                          struct wpa_ssid *ssid)
 973 {
 974         return wpa_config_write_freqs(data, ssid->scan_freq);
 975 }
 976
 977
 978 static char * wpa_config_write_freq_list(const struct parse_data *data,
 979                                          struct wpa_ssid *ssid)
 980 {
 981         return wpa_config_write_freqs(data, ssid->freq_list);
 982 }
 983 #endif /* NO_CONFIG_WRITE */
 984
 985
 986 #ifdef IEEE8021X_EAPOL
 987 static int wpa_config_parse_eap(const struct parse_data *data,
 988                                 struct wpa_ssid *ssid, int line,
 989                                 const char *value)
 990 {
 991         int last, errors = 0;
 992         char *start, *end, *buf;
 993         struct eap_method_type *methods = NULL, *tmp;
 994         size_t num_methods = 0;
 995
 996         buf = os_strdup(value);
 997         if (buf == NULL)
 998                 return -1;
 999         start = buf;
1000
1001         while (*start != '\0') {
1002                 while (*start == ' ' || *start == '\t')
1003                         start++;
1004                 if (*start == '\0')
1005                         break;
1006                 end = start;
1007                 while (*end != ' ' && *end != '\t' && *end != '\0')
1008                         end++;
1009                 last = *end == '\0';
1010                 *end = '\0';
1011                 tmp = methods;
1012                 methods = os_realloc_array(methods, num_methods + 1,
1013                                            sizeof(*methods));
1014                 if (methods == NULL) {
1015                         os_free(tmp);
1016                         os_free(buf);
1017                         return -1;
1018                 }
1019                 methods[num_methods].method = eap_peer_get_type(
1020                         start, &methods[num_methods].vendor);
1021                 if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1022                     methods[num_methods].method == EAP_TYPE_NONE) {
1023                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
1024                                    "'%s'", line, start);
1025                         wpa_printf(MSG_ERROR, "You may need to add support for"
1026                                    " this EAP method during wpa_supplicant\n"
1027                                    "build time configuration.\n"
1028                                    "See README for more information.");
1029                         errors++;
1030                 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1031                            methods[num_methods].method == EAP_TYPE_LEAP)
1032                         ssid->leap++;
1033                 else
1034                         ssid->non_leap++;
1035                 num_methods++;
1036                 if (last)
1037                         break;
1038                 start = end + 1;
1039         }
1040         os_free(buf);
1041
1042         tmp = methods;
1043         methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods));
1044         if (methods == NULL) {
1045                 os_free(tmp);
1046                 return -1;
1047         }
1048         methods[num_methods].vendor = EAP_VENDOR_IETF;
1049         methods[num_methods].method = EAP_TYPE_NONE;
1050         num_methods++;
1051
1052         wpa_hexdump(MSG_MSGDUMP, "eap methods",
1053                     (u8 *) methods, num_methods * sizeof(*methods));
1054         os_free(ssid->eap.eap_methods);
1055         ssid->eap.eap_methods = methods;
1056         return errors ? -1 : 0;
1057 }
1058
1059
1060 static char * wpa_config_write_eap(const struct parse_data *data,
1061                                    struct wpa_ssid *ssid)
1062 {
1063         int i, ret;
1064         char *buf, *pos, *end;
1065         const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
1066         const char *name;
1067
1068         if (eap_methods == NULL)
1069                 return NULL;
1070
1071         pos = buf = os_zalloc(100);
1072         if (buf == NULL)
1073                 return NULL;
1074         end = buf + 100;
1075
1076         for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
1077                      eap_methods[i].method != EAP_TYPE_NONE; i++) {
1078                 name = eap_get_name(eap_methods[i].vendor,
1079                                     eap_methods[i].method);
1080                 if (name) {
1081                         ret = os_snprintf(pos, end - pos, "%s%s",
1082                                           pos == buf ? "" : " ", name);
1083                         if (ret < 0 || ret >= end - pos)
1084                                 break;
1085                         pos += ret;
1086                 }
1087         }
1088
1089         end[-1] = '\0';
1090
1091         return buf;
1092 }
1093
1094
1095 static int wpa_config_parse_password(const struct parse_data *data,
1096                                      struct wpa_ssid *ssid, int line,
1097                                      const char *value)
1098 {
1099         u8 *hash;
1100
1101         if (os_strcmp(value, "NULL") == 0) {
1102                 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
1103                 os_free(ssid->eap.password);
1104                 ssid->eap.password = NULL;
1105                 ssid->eap.password_len = 0;
1106                 return 0;
1107         }
1108
1109 #ifdef CONFIG_EXT_PASSWORD
1110         if (os_strncmp(value, "ext:", 4) == 0) {
1111                 char *name = os_strdup(value + 4);
1112                 if (name == NULL)
1113                         return -1;
1114                 os_free(ssid->eap.password);
1115                 ssid->eap.password = (u8 *) name;
1116                 ssid->eap.password_len = os_strlen(name);
1117                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1118                 ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD;
1119                 return 0;
1120         }
1121 #endif /* CONFIG_EXT_PASSWORD */
1122
1123         if (os_strncmp(value, "hash:", 5) != 0) {
1124                 char *tmp;
1125                 size_t res_len;
1126
1127                 tmp = wpa_config_parse_string(value, &res_len);
1128                 if (tmp == NULL) {
1129                         wpa_printf(MSG_ERROR, "Line %d: failed to parse "
1130                                    "password.", line);
1131                         return -1;
1132                 }
1133                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
1134                                       (u8 *) tmp, res_len);
1135
1136                 os_free(ssid->eap.password);
1137                 ssid->eap.password = (u8 *) tmp;
1138                 ssid->eap.password_len = res_len;
1139                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1140                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1141
1142                 return 0;
1143         }
1144
1145
1146         /* NtPasswordHash: hash:<32 hex digits> */
1147         if (os_strlen(value + 5) != 2 * 16) {
1148                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length "
1149                            "(expected 32 hex digits)", line);
1150                 return -1;
1151         }
1152
1153         hash = os_malloc(16);
1154         if (hash == NULL)
1155                 return -1;
1156
1157         if (hexstr2bin(value + 5, hash, 16)) {
1158                 os_free(hash);
1159                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
1160                 return -1;
1161         }
1162
1163         wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
1164
1165         os_free(ssid->eap.password);
1166         ssid->eap.password = hash;
1167         ssid->eap.password_len = 16;
1168         ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1169         ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1170
1171         return 0;
1172 }
1173
1174
1175 static char * wpa_config_write_password(const struct parse_data *data,
1176                                         struct wpa_ssid *ssid)
1177 {
1178         char *buf;
1179
1180         if (ssid->eap.password == NULL)
1181                 return NULL;
1182
1183 #ifdef CONFIG_EXT_PASSWORD
1184         if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) {
1185                 buf = os_zalloc(4 + ssid->eap.password_len + 1);
1186                 if (buf == NULL)
1187                         return NULL;
1188                 os_memcpy(buf, "ext:", 4);
1189                 os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len);
1190                 return buf;
1191         }
1192 #endif /* CONFIG_EXT_PASSWORD */
1193
1194         if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
1195                 return wpa_config_write_string(
1196                         ssid->eap.password, ssid->eap.password_len);
1197         }
1198
1199         buf = os_malloc(5 + 32 + 1);
1200         if (buf == NULL)
1201                 return NULL;
1202
1203         os_memcpy(buf, "hash:", 5);
1204         wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
1205
1206         return buf;
1207 }
1208 #endif /* IEEE8021X_EAPOL */
1209
1210
1211 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
1212                                     const char *value, int idx)
1213 {
1214         char *buf, title[20];
1215         int res;
1216
1217         buf = wpa_config_parse_string(value, len);
1218         if (buf == NULL) {
1219                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
1220                            line, idx, value);
1221                 return -1;
1222         }
1223         if (*len > MAX_WEP_KEY_LEN) {
1224                 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
1225                            line, idx, value);
1226                 os_free(buf);
1227                 return -1;
1228         }
1229         if (*len && *len != 5 && *len != 13 && *len != 16) {
1230                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - "
1231                            "this network block will be ignored",
1232                            line, (unsigned int) *len);
1233         }
1234         os_memcpy(key, buf, *len);
1235         os_free(buf);
1236         res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
1237         if (res >= 0 && (size_t) res < sizeof(title))
1238                 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
1239         return 0;
1240 }
1241
1242
1243 static int wpa_config_parse_wep_key0(const struct parse_data *data,
1244                                      struct wpa_ssid *ssid, int line,
1245                                      const char *value)
1246 {
1247         return wpa_config_parse_wep_key(ssid->wep_key[0],
1248                                         &ssid->wep_key_len[0], line,
1249                                         value, 0);
1250 }
1251
1252
1253 static int wpa_config_parse_wep_key1(const struct parse_data *data,
1254                                      struct wpa_ssid *ssid, int line,
1255                                      const char *value)
1256 {
1257         return wpa_config_parse_wep_key(ssid->wep_key[1],
1258                                         &ssid->wep_key_len[1], line,
1259                                         value, 1);
1260 }
1261
1262
1263 static int wpa_config_parse_wep_key2(const struct parse_data *data,
1264                                      struct wpa_ssid *ssid, int line,
1265                                      const char *value)
1266 {
1267         return wpa_config_parse_wep_key(ssid->wep_key[2],
1268                                         &ssid->wep_key_len[2], line,
1269                                         value, 2);
1270 }
1271
1272
1273 static int wpa_config_parse_wep_key3(const struct parse_data *data,
1274                                      struct wpa_ssid *ssid, int line,
1275                                      const char *value)
1276 {
1277         return wpa_config_parse_wep_key(ssid->wep_key[3],
1278                                         &ssid->wep_key_len[3], line,
1279                                         value, 3);
1280 }
1281
1282
1283 #ifndef NO_CONFIG_WRITE
1284 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
1285 {
1286         if (ssid->wep_key_len[idx] == 0)
1287                 return NULL;
1288         return wpa_config_write_string(ssid->wep_key[idx],
1289                                        ssid->wep_key_len[idx]);
1290 }
1291
1292
1293 static char * wpa_config_write_wep_key0(const struct parse_data *data,
1294                                         struct wpa_ssid *ssid)
1295 {
1296         return wpa_config_write_wep_key(ssid, 0);
1297 }
1298
1299
1300 static char * wpa_config_write_wep_key1(const struct parse_data *data,
1301                                         struct wpa_ssid *ssid)
1302 {
1303         return wpa_config_write_wep_key(ssid, 1);
1304 }
1305
1306
1307 static char * wpa_config_write_wep_key2(const struct parse_data *data,
1308                                         struct wpa_ssid *ssid)
1309 {
1310         return wpa_config_write_wep_key(ssid, 2);
1311 }
1312
1313
1314 static char * wpa_config_write_wep_key3(const struct parse_data *data,
1315                                         struct wpa_ssid *ssid)
1316 {
1317         return wpa_config_write_wep_key(ssid, 3);
1318 }
1319 #endif /* NO_CONFIG_WRITE */
1320
1321
1322 #ifdef CONFIG_P2P
1323
1324 static int wpa_config_parse_p2p_client_list(const struct parse_data *data,
1325                                             struct wpa_ssid *ssid, int line,
1326                                             const char *value)
1327 {
1328         const char *pos;
1329         u8 *buf, *n, addr[ETH_ALEN];
1330         size_t count;
1331
1332         buf = NULL;
1333         count = 0;
1334
1335         pos = value;
1336         while (pos && *pos) {
1337                 while (*pos == ' ')
1338                         pos++;
1339
1340                 if (hwaddr_aton(pos, addr)) {
1341                         if (count == 0) {
1342                                 wpa_printf(MSG_ERROR, "Line %d: Invalid "
1343                                            "p2p_client_list address '%s'.",
1344                                            line, value);
1345                                 os_free(buf);
1346                                 return -1;
1347                         }
1348                         /* continue anyway since this could have been from a
1349                          * truncated configuration file line */
1350                         wpa_printf(MSG_INFO, "Line %d: Ignore likely "
1351                                    "truncated p2p_client_list address '%s'",
1352                                    line, pos);
1353                 } else {
1354                         n = os_realloc_array(buf, count + 1, ETH_ALEN);
1355                         if (n == NULL) {
1356                                 os_free(buf);
1357                                 return -1;
1358                         }
1359                         buf = n;
1360                         os_memmove(buf + ETH_ALEN, buf, count * ETH_ALEN);
1361                         os_memcpy(buf, addr, ETH_ALEN);
1362                         count++;
1363                         wpa_hexdump(MSG_MSGDUMP, "p2p_client_list",
1364                                     addr, ETH_ALEN);
1365                 }
1366
1367                 pos = os_strchr(pos, ' ');
1368         }
1369
1370         os_free(ssid->p2p_client_list);
1371         ssid->p2p_client_list = buf;
1372         ssid->num_p2p_clients = count;
1373
1374         return 0;
1375 }
1376
1377
1378 #ifndef NO_CONFIG_WRITE
1379 static char * wpa_config_write_p2p_client_list(const struct parse_data *data,
1380                                                struct wpa_ssid *ssid)
1381 {
1382         char *value, *end, *pos;
1383         int res;
1384         size_t i;
1385
1386         if (ssid->p2p_client_list == NULL || ssid->num_p2p_clients == 0)
1387                 return NULL;
1388
1389         value = os_malloc(20 * ssid->num_p2p_clients);
1390         if (value == NULL)
1391                 return NULL;
1392         pos = value;
1393         end = value + 20 * ssid->num_p2p_clients;
1394
1395         for (i = ssid->num_p2p_clients; i > 0; i--) {
1396                 res = os_snprintf(pos, end - pos, MACSTR " ",
1397                                   MAC2STR(ssid->p2p_client_list +
1398                                           (i - 1) * ETH_ALEN));
1399                 if (res < 0 || res >= end - pos) {
1400                         os_free(value);
1401                         return NULL;
1402                 }
1403                 pos += res;
1404         }
1405
1406         if (pos > value)
1407                 pos[-1] = '\0';
1408
1409         return value;
1410 }
1411 #endif /* NO_CONFIG_WRITE */
1412
1413
1414 static int wpa_config_parse_psk_list(const struct parse_data *data,
1415                                      struct wpa_ssid *ssid, int line,
1416                                      const char *value)
1417 {
1418         struct psk_list_entry *p;
1419         const char *pos;
1420
1421         p = os_zalloc(sizeof(*p));
1422         if (p == NULL)
1423                 return -1;
1424
1425         pos = value;
1426         if (os_strncmp(pos, "P2P-", 4) == 0) {
1427                 p->p2p = 1;
1428                 pos += 4;
1429         }
1430
1431         if (hwaddr_aton(pos, p->addr)) {
1432                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list address '%s'",
1433                            line, pos);
1434                 os_free(p);
1435                 return -1;
1436         }
1437         pos += 17;
1438         if (*pos != '-') {
1439                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list '%s'",
1440                            line, pos);
1441                 os_free(p);
1442                 return -1;
1443         }
1444         pos++;
1445
1446         if (hexstr2bin(pos, p->psk, PMK_LEN) || pos[PMK_LEN * 2] != '\0') {
1447                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list PSK '%s'",
1448                            line, pos);
1449                 os_free(p);
1450                 return -1;
1451         }
1452
1453         dl_list_add(&ssid->psk_list, &p->list);
1454
1455         return 0;
1456 }
1457
1458
1459 #ifndef NO_CONFIG_WRITE
1460 static char * wpa_config_write_psk_list(const struct parse_data *data,
1461                                         struct wpa_ssid *ssid)
1462 {
1463         return NULL;
1464 }
1465 #endif /* NO_CONFIG_WRITE */
1466
1467 #endif /* CONFIG_P2P */
1468
1469 /* Helper macros for network block parser */
1470
1471 #ifdef OFFSET
1472 #undef OFFSET
1473 #endif /* OFFSET */
1474 /* OFFSET: Get offset of a variable within the wpa_ssid structure */
1475 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
1476
1477 /* STR: Define a string variable for an ASCII string; f = field name */
1478 #ifdef NO_CONFIG_WRITE
1479 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
1480 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f)
1481 #else /* NO_CONFIG_WRITE */
1482 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
1483 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f)
1484 #endif /* NO_CONFIG_WRITE */
1485 #define STR(f) _STR(f), NULL, NULL, NULL, 0
1486 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0
1487 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
1488 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1
1489
1490 /* STR_LEN: Define a string variable with a separate variable for storing the
1491  * data length. Unlike STR(), this can be used to store arbitrary binary data
1492  * (i.e., even nul termination character). */
1493 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
1494 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len)
1495 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
1496 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0
1497 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
1498
1499 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
1500  * explicitly specified. */
1501 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
1502 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
1503 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
1504
1505 #ifdef NO_CONFIG_WRITE
1506 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
1507 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0
1508 #else /* NO_CONFIG_WRITE */
1509 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1510         OFFSET(f), (void *) 0
1511 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1512         OFFSET(eap.f), (void *) 0
1513 #endif /* NO_CONFIG_WRITE */
1514
1515 /* INT: Define an integer variable */
1516 #define INT(f) _INT(f), NULL, NULL, 0
1517 #define INTe(f) _INTe(f), NULL, NULL, 0
1518
1519 /* INT_RANGE: Define an integer variable with allowed value range */
1520 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
1521
1522 /* FUNC: Define a configuration variable that uses a custom function for
1523  * parsing and writing the value. */
1524 #ifdef NO_CONFIG_WRITE
1525 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
1526 #else /* NO_CONFIG_WRITE */
1527 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
1528         NULL, NULL, NULL, NULL
1529 #endif /* NO_CONFIG_WRITE */
1530 #define FUNC(f) _FUNC(f), 0
1531 #define FUNC_KEY(f) _FUNC(f), 1
1532
1533 /*
1534  * Table of network configuration variables. This table is used to parse each
1535  * network configuration variable, e.g., each line in wpa_supplicant.conf file
1536  * that is inside a network block.
1537  *
1538  * This table is generated using the helper macros defined above and with
1539  * generous help from the C pre-processor. The field name is stored as a string
1540  * into .name and for STR and INT types, the offset of the target buffer within
1541  * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
1542  * offset to the field containing the length of the configuration variable.
1543  * .param3 and .param4 can be used to mark the allowed range (length for STR
1544  * and value for INT).
1545  *
1546  * For each configuration line in wpa_supplicant.conf, the parser goes through
1547  * this table and select the entry that matches with the field name. The parser
1548  * function (.parser) is then called to parse the actual value of the field.
1549  *
1550  * This kind of mechanism makes it easy to add new configuration parameters,
1551  * since only one line needs to be added into this table and into the
1552  * struct wpa_ssid definition if the new variable is either a string or
1553  * integer. More complex types will need to use their own parser and writer
1554  * functions.
1555  */
1556 static const struct parse_data ssid_fields[] = {
1557         { STR_RANGE(ssid, 0, MAX_SSID_LEN) },
1558         { INT_RANGE(scan_ssid, 0, 1) },
1559         { FUNC(bssid) },
1560         { FUNC_KEY(psk) },
1561         { FUNC(proto) },
1562         { FUNC(key_mgmt) },
1563         { INT(bg_scan_period) },
1564         { FUNC(pairwise) },
1565         { FUNC(group) },
1566         { FUNC(auth_alg) },
1567         { FUNC(scan_freq) },
1568         { FUNC(freq_list) },
1569 #ifdef IEEE8021X_EAPOL
1570         { FUNC(eap) },
1571         { STR_LENe(identity) },
1572         { STR_LENe(anonymous_identity) },
1573         { FUNC_KEY(password) },
1574         { STRe(ca_cert) },
1575         { STRe(ca_path) },
1576         { STRe(client_cert) },
1577         { STRe(private_key) },
1578         { STR_KEYe(private_key_passwd) },
1579         { STRe(dh_file) },
1580         { STRe(subject_match) },
1581         { STRe(altsubject_match) },
1582         { STRe(domain_suffix_match) },
1583         { STRe(ca_cert2) },
1584         { STRe(ca_path2) },
1585         { STRe(client_cert2) },
1586         { STRe(private_key2) },
1587         { STR_KEYe(private_key2_passwd) },
1588         { STRe(dh_file2) },
1589         { STRe(subject_match2) },
1590         { STRe(altsubject_match2) },
1591         { STRe(domain_suffix_match2) },
1592         { STRe(phase1) },
1593         { STRe(phase2) },
1594         { STRe(pcsc) },
1595         { STR_KEYe(pin) },
1596         { STRe(engine_id) },
1597         { STRe(key_id) },
1598         { STRe(cert_id) },
1599         { STRe(ca_cert_id) },
1600         { STR_KEYe(pin2) },
1601         { STRe(engine2_id) },
1602         { STRe(key2_id) },
1603         { STRe(cert2_id) },
1604         { STRe(ca_cert2_id) },
1605         { INTe(engine) },
1606         { INTe(engine2) },
1607         { INT(eapol_flags) },
1608 #endif /* IEEE8021X_EAPOL */
1609         { FUNC_KEY(wep_key0) },
1610         { FUNC_KEY(wep_key1) },
1611         { FUNC_KEY(wep_key2) },
1612         { FUNC_KEY(wep_key3) },
1613         { INT(wep_tx_keyidx) },
1614         { INT(priority) },
1615 #ifdef IEEE8021X_EAPOL
1616         { INT(eap_workaround) },
1617         { STRe(pac_file) },
1618         { INTe(fragment_size) },
1619         { INTe(ocsp) },
1620 #endif /* IEEE8021X_EAPOL */
1621         { INT_RANGE(mode, 0, 4) },
1622         { INT_RANGE(proactive_key_caching, 0, 1) },
1623         { INT_RANGE(disabled, 0, 2) },
1624         { STR(id_str) },
1625 #ifdef CONFIG_IEEE80211W
1626         { INT_RANGE(ieee80211w, 0, 2) },
1627 #endif /* CONFIG_IEEE80211W */
1628         { INT_RANGE(peerkey, 0, 1) },
1629         { INT_RANGE(mixed_cell, 0, 1) },
1630         { INT_RANGE(frequency, 0, 65000) },
1631         { INT(wpa_ptk_rekey) },
1632         { STR(bgscan) },
1633         { INT_RANGE(ignore_broadcast_ssid, 0, 2) },
1634 #ifdef CONFIG_P2P
1635         { FUNC(p2p_client_list) },
1636         { FUNC(psk_list) },
1637 #endif /* CONFIG_P2P */
1638 #ifdef CONFIG_HT_OVERRIDES
1639         { INT_RANGE(disable_ht, 0, 1) },
1640         { INT_RANGE(disable_ht40, -1, 1) },
1641         { INT_RANGE(disable_sgi, 0, 1) },
1642         { INT_RANGE(disable_max_amsdu, -1, 1) },
1643         { INT_RANGE(ampdu_factor, -1, 3) },
1644         { INT_RANGE(ampdu_density, -1, 7) },
1645         { STR(ht_mcs) },
1646 #endif /* CONFIG_HT_OVERRIDES */
1647 #ifdef CONFIG_VHT_OVERRIDES
1648         { INT_RANGE(disable_vht, 0, 1) },
1649         { INT(vht_capa) },
1650         { INT(vht_capa_mask) },
1651         { INT_RANGE(vht_rx_mcs_nss_1, -1, 3) },
1652         { INT_RANGE(vht_rx_mcs_nss_2, -1, 3) },
1653         { INT_RANGE(vht_rx_mcs_nss_3, -1, 3) },
1654         { INT_RANGE(vht_rx_mcs_nss_4, -1, 3) },
1655         { INT_RANGE(vht_rx_mcs_nss_5, -1, 3) },
1656         { INT_RANGE(vht_rx_mcs_nss_6, -1, 3) },
1657         { INT_RANGE(vht_rx_mcs_nss_7, -1, 3) },
1658         { INT_RANGE(vht_rx_mcs_nss_8, -1, 3) },
1659         { INT_RANGE(vht_tx_mcs_nss_1, -1, 3) },
1660         { INT_RANGE(vht_tx_mcs_nss_2, -1, 3) },
1661         { INT_RANGE(vht_tx_mcs_nss_3, -1, 3) },
1662         { INT_RANGE(vht_tx_mcs_nss_4, -1, 3) },
1663         { INT_RANGE(vht_tx_mcs_nss_5, -1, 3) },
1664         { INT_RANGE(vht_tx_mcs_nss_6, -1, 3) },
1665         { INT_RANGE(vht_tx_mcs_nss_7, -1, 3) },
1666         { INT_RANGE(vht_tx_mcs_nss_8, -1, 3) },
1667 #endif /* CONFIG_VHT_OVERRIDES */
1668         { INT(ap_max_inactivity) },
1669         { INT(dtim_period) },
1670         { INT(beacon_int) },
1671 };
1672
1673 #undef OFFSET
1674 #undef _STR
1675 #undef STR
1676 #undef STR_KEY
1677 #undef _STR_LEN
1678 #undef STR_LEN
1679 #undef STR_LEN_KEY
1680 #undef _STR_RANGE
1681 #undef STR_RANGE
1682 #undef STR_RANGE_KEY
1683 #undef _INT
1684 #undef INT
1685 #undef INT_RANGE
1686 #undef _FUNC
1687 #undef FUNC
1688 #undef FUNC_KEY
1689 #define NUM_SSID_FIELDS (sizeof(ssid_fields) / sizeof(ssid_fields[0]))
1690
1691
1692 /**
1693  * wpa_config_add_prio_network - Add a network to priority lists
1694  * @config: Configuration data from wpa_config_read()
1695  * @ssid: Pointer to the network configuration to be added to the list
1696  * Returns: 0 on success, -1 on failure
1697  *
1698  * This function is used to add a network block to the priority list of
1699  * networks. This must be called for each network when reading in the full
1700  * configuration. In addition, this can be used indirectly when updating
1701  * priorities by calling wpa_config_update_prio_list().
1702  */
1703 int wpa_config_add_prio_network(struct wpa_config *config,
1704                                 struct wpa_ssid *ssid)
1705 {
1706         int prio;
1707         struct wpa_ssid *prev, **nlist;
1708
1709         /*
1710          * Add to an existing priority list if one is available for the
1711          * configured priority level for this network.
1712          */
1713         for (prio = 0; prio < config->num_prio; prio++) {
1714                 prev = config->pssid[prio];
1715                 if (prev->priority == ssid->priority) {
1716                         while (prev->pnext)
1717                                 prev = prev->pnext;
1718                         prev->pnext = ssid;
1719                         return 0;
1720                 }
1721         }
1722
1723         /* First network for this priority - add a new priority list */
1724         nlist = os_realloc_array(config->pssid, config->num_prio + 1,
1725                                  sizeof(struct wpa_ssid *));
1726         if (nlist == NULL)
1727                 return -1;
1728
1729         for (prio = 0; prio < config->num_prio; prio++) {
1730                 if (nlist[prio]->priority < ssid->priority) {
1731                         os_memmove(&nlist[prio + 1], &nlist[prio],
1732                                    (config->num_prio - prio) *
1733                                    sizeof(struct wpa_ssid *));
1734                         break;
1735                 }
1736         }
1737
1738         nlist[prio] = ssid;
1739         config->num_prio++;
1740         config->pssid = nlist;
1741
1742         return 0;
1743 }
1744
1745
1746 /**
1747  * wpa_config_update_prio_list - Update network priority list
1748  * @config: Configuration data from wpa_config_read()
1749  * Returns: 0 on success, -1 on failure
1750  *
1751  * This function is called to update the priority list of networks in the
1752  * configuration when a network is being added or removed. This is also called
1753  * if a priority for a network is changed.
1754  */
1755 int wpa_config_update_prio_list(struct wpa_config *config)
1756 {
1757         struct wpa_ssid *ssid;
1758         int ret = 0;
1759
1760         os_free(config->pssid);
1761         config->pssid = NULL;
1762         config->num_prio = 0;
1763
1764         ssid = config->ssid;
1765         while (ssid) {
1766                 ssid->pnext = NULL;
1767                 if (wpa_config_add_prio_network(config, ssid) < 0)
1768                         ret = -1;
1769                 ssid = ssid->next;
1770         }
1771
1772         return ret;
1773 }
1774
1775
1776 #ifdef IEEE8021X_EAPOL
1777 static void eap_peer_config_free(struct eap_peer_config *eap)
1778 {
1779         os_free(eap->eap_methods);
1780         os_free(eap->identity);
1781         os_free(eap->anonymous_identity);
1782         os_free(eap->password);
1783         os_free(eap->ca_cert);
1784         os_free(eap->ca_path);
1785         os_free(eap->client_cert);
1786         os_free(eap->private_key);
1787         os_free(eap->private_key_passwd);
1788         os_free(eap->dh_file);
1789         os_free(eap->subject_match);
1790         os_free(eap->altsubject_match);
1791         os_free(eap->domain_suffix_match);
1792         os_free(eap->ca_cert2);
1793         os_free(eap->ca_path2);
1794         os_free(eap->client_cert2);
1795         os_free(eap->private_key2);
1796         os_free(eap->private_key2_passwd);
1797         os_free(eap->dh_file2);
1798         os_free(eap->subject_match2);
1799         os_free(eap->altsubject_match2);
1800         os_free(eap->domain_suffix_match2);
1801         os_free(eap->phase1);
1802         os_free(eap->phase2);
1803         os_free(eap->pcsc);
1804         os_free(eap->pin);
1805         os_free(eap->engine_id);
1806         os_free(eap->key_id);
1807         os_free(eap->cert_id);
1808         os_free(eap->ca_cert_id);
1809         os_free(eap->key2_id);
1810         os_free(eap->cert2_id);
1811         os_free(eap->ca_cert2_id);
1812         os_free(eap->pin2);
1813         os_free(eap->engine2_id);
1814         os_free(eap->otp);
1815         os_free(eap->pending_req_otp);
1816         os_free(eap->pac_file);
1817         os_free(eap->new_password);
1818         os_free(eap->external_sim_resp);
1819 }
1820 #endif /* IEEE8021X_EAPOL */
1821
1822
1823 /**
1824  * wpa_config_free_ssid - Free network/ssid configuration data
1825  * @ssid: Configuration data for the network
1826  *
1827  * This function frees all resources allocated for the network configuration
1828  * data.
1829  */
1830 void wpa_config_free_ssid(struct wpa_ssid *ssid)
1831 {
1832         struct psk_list_entry *psk;
1833
1834         os_free(ssid->ssid);
1835         os_free(ssid->passphrase);
1836         os_free(ssid->ext_psk);
1837 #ifdef IEEE8021X_EAPOL
1838         eap_peer_config_free(&ssid->eap);
1839 #endif /* IEEE8021X_EAPOL */
1840         os_free(ssid->id_str);
1841         os_free(ssid->scan_freq);
1842         os_free(ssid->freq_list);
1843         os_free(ssid->bgscan);
1844         os_free(ssid->p2p_client_list);
1845 #ifdef CONFIG_HT_OVERRIDES
1846         os_free(ssid->ht_mcs);
1847 #endif /* CONFIG_HT_OVERRIDES */
1848         while ((psk = dl_list_first(&ssid->psk_list, struct psk_list_entry,
1849                                     list))) {
1850                 dl_list_del(&psk->list);
1851                 os_free(psk);
1852         }
1853         os_free(ssid);
1854 }
1855
1856
1857 void wpa_config_free_cred(struct wpa_cred *cred)
1858 {
1859         size_t i;
1860
1861         os_free(cred->realm);
1862         os_free(cred->username);
1863         os_free(cred->password);
1864         os_free(cred->ca_cert);
1865         os_free(cred->client_cert);
1866         os_free(cred->private_key);
1867         os_free(cred->private_key_passwd);
1868         os_free(cred->imsi);
1869         os_free(cred->milenage);
1870         for (i = 0; i < cred->num_domain; i++)
1871                 os_free(cred->domain[i]);
1872         os_free(cred->domain);
1873         os_free(cred->domain_suffix_match);
1874         os_free(cred->eap_method);
1875         os_free(cred->phase1);
1876         os_free(cred->phase2);
1877         os_free(cred->excluded_ssid);
1878         os_free(cred);
1879 }
1880
1881
1882 /**
1883  * wpa_config_free - Free configuration data
1884  * @config: Configuration data from wpa_config_read()
1885  *
1886  * This function frees all resources allocated for the configuration data by
1887  * wpa_config_read().
1888  */
1889 void wpa_config_free(struct wpa_config *config)
1890 {
1891 #ifndef CONFIG_NO_CONFIG_BLOBS
1892         struct wpa_config_blob *blob, *prevblob;
1893 #endif /* CONFIG_NO_CONFIG_BLOBS */
1894         struct wpa_ssid *ssid, *prev = NULL;
1895         struct wpa_cred *cred, *cprev;
1896
1897         ssid = config->ssid;
1898         while (ssid) {
1899                 prev = ssid;
1900                 ssid = ssid->next;
1901                 wpa_config_free_ssid(prev);
1902         }
1903
1904         cred = config->cred;
1905         while (cred) {
1906                 cprev = cred;
1907                 cred = cred->next;
1908                 wpa_config_free_cred(cprev);
1909         }
1910
1911 #ifndef CONFIG_NO_CONFIG_BLOBS
1912         blob = config->blobs;
1913         prevblob = NULL;
1914         while (blob) {
1915                 prevblob = blob;
1916                 blob = blob->next;
1917                 wpa_config_free_blob(prevblob);
1918         }
1919 #endif /* CONFIG_NO_CONFIG_BLOBS */
1920
1921         wpabuf_free(config->wps_vendor_ext_m1);
1922         os_free(config->ctrl_interface);
1923         os_free(config->ctrl_interface_group);
1924         os_free(config->opensc_engine_path);
1925         os_free(config->pkcs11_engine_path);
1926         os_free(config->pkcs11_module_path);
1927         os_free(config->pcsc_reader);
1928         os_free(config->pcsc_pin);
1929         os_free(config->driver_param);
1930         os_free(config->device_name);
1931         os_free(config->manufacturer);
1932         os_free(config->model_name);
1933         os_free(config->model_number);
1934         os_free(config->serial_number);
1935         os_free(config->config_methods);
1936         os_free(config->p2p_ssid_postfix);
1937         os_free(config->pssid);
1938         os_free(config->p2p_pref_chan);
1939         os_free(config->autoscan);
1940         os_free(config->freq_list);
1941         wpabuf_free(config->wps_nfc_dh_pubkey);
1942         wpabuf_free(config->wps_nfc_dh_privkey);
1943         wpabuf_free(config->wps_nfc_dev_pw);
1944         os_free(config->ext_password_backend);
1945         os_free(config->sae_groups);
1946         wpabuf_free(config->ap_vendor_elements);
1947         os_free(config);
1948 }
1949
1950
1951 /**
1952  * wpa_config_foreach_network - Iterate over each configured network
1953  * @config: Configuration data from wpa_config_read()
1954  * @func: Callback function to process each network
1955  * @arg: Opaque argument to pass to callback function
1956  *
1957  * Iterate over the set of configured networks calling the specified
1958  * function for each item. We guard against callbacks removing the
1959  * supplied network.
1960  */
1961 void wpa_config_foreach_network(struct wpa_config *config,
1962                                 void (*func)(void *, struct wpa_ssid *),
1963                                 void *arg)
1964 {
1965         struct wpa_ssid *ssid, *next;
1966
1967         ssid = config->ssid;
1968         while (ssid) {
1969                 next = ssid->next;
1970                 func(arg, ssid);
1971                 ssid = next;
1972         }
1973 }
1974
1975
1976 /**
1977  * wpa_config_get_network - Get configured network based on id
1978  * @config: Configuration data from wpa_config_read()
1979  * @id: Unique network id to search for
1980  * Returns: Network configuration or %NULL if not found
1981  */
1982 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
1983 {
1984         struct wpa_ssid *ssid;
1985
1986         ssid = config->ssid;
1987         while (ssid) {
1988                 if (id == ssid->id)
1989                         break;
1990                 ssid = ssid->next;
1991         }
1992
1993         return ssid;
1994 }
1995
1996
1997 /**
1998  * wpa_config_add_network - Add a new network with empty configuration
1999  * @config: Configuration data from wpa_config_read()
2000  * Returns: The new network configuration or %NULL if operation failed
2001  */
2002 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
2003 {
2004         int id;
2005         struct wpa_ssid *ssid, *last = NULL;
2006
2007         id = -1;
2008         ssid = config->ssid;
2009         while (ssid) {
2010                 if (ssid->id > id)
2011                         id = ssid->id;
2012                 last = ssid;
2013                 ssid = ssid->next;
2014         }
2015         id++;
2016
2017         ssid = os_zalloc(sizeof(*ssid));
2018         if (ssid == NULL)
2019                 return NULL;
2020         ssid->id = id;
2021         dl_list_init(&ssid->psk_list);
2022         if (last)
2023                 last->next = ssid;
2024         else
2025                 config->ssid = ssid;
2026
2027         wpa_config_update_prio_list(config);
2028
2029         return ssid;
2030 }
2031
2032
2033 /**
2034  * wpa_config_remove_network - Remove a configured network based on id
2035  * @config: Configuration data from wpa_config_read()
2036  * @id: Unique network id to search for
2037  * Returns: 0 on success, or -1 if the network was not found
2038  */
2039 int wpa_config_remove_network(struct wpa_config *config, int id)
2040 {
2041         struct wpa_ssid *ssid, *prev = NULL;
2042
2043         ssid = config->ssid;
2044         while (ssid) {
2045                 if (id == ssid->id)
2046                         break;
2047                 prev = ssid;
2048                 ssid = ssid->next;
2049         }
2050
2051         if (ssid == NULL)
2052                 return -1;
2053
2054         if (prev)
2055                 prev->next = ssid->next;
2056         else
2057                 config->ssid = ssid->next;
2058
2059         wpa_config_update_prio_list(config);
2060         wpa_config_free_ssid(ssid);
2061         return 0;
2062 }
2063
2064
2065 /**
2066  * wpa_config_set_network_defaults - Set network default values
2067  * @ssid: Pointer to network configuration data
2068  */
2069 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
2070 {
2071         ssid->proto = DEFAULT_PROTO;
2072         ssid->pairwise_cipher = DEFAULT_PAIRWISE;
2073         ssid->group_cipher = DEFAULT_GROUP;
2074         ssid->key_mgmt = DEFAULT_KEY_MGMT;
2075         ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
2076 #ifdef IEEE8021X_EAPOL
2077         ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
2078         ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
2079         ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
2080 #endif /* IEEE8021X_EAPOL */
2081 #ifdef CONFIG_HT_OVERRIDES
2082         ssid->disable_ht = DEFAULT_DISABLE_HT;
2083         ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
2084         ssid->disable_sgi = DEFAULT_DISABLE_SGI;
2085         ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
2086         ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
2087         ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
2088 #endif /* CONFIG_HT_OVERRIDES */
2089 #ifdef CONFIG_VHT_OVERRIDES
2090         ssid->vht_rx_mcs_nss_1 = -1;
2091         ssid->vht_rx_mcs_nss_2 = -1;
2092         ssid->vht_rx_mcs_nss_3 = -1;
2093         ssid->vht_rx_mcs_nss_4 = -1;
2094         ssid->vht_rx_mcs_nss_5 = -1;
2095         ssid->vht_rx_mcs_nss_6 = -1;
2096         ssid->vht_rx_mcs_nss_7 = -1;
2097         ssid->vht_rx_mcs_nss_8 = -1;
2098         ssid->vht_tx_mcs_nss_1 = -1;
2099         ssid->vht_tx_mcs_nss_2 = -1;
2100         ssid->vht_tx_mcs_nss_3 = -1;
2101         ssid->vht_tx_mcs_nss_4 = -1;
2102         ssid->vht_tx_mcs_nss_5 = -1;
2103         ssid->vht_tx_mcs_nss_6 = -1;
2104         ssid->vht_tx_mcs_nss_7 = -1;
2105         ssid->vht_tx_mcs_nss_8 = -1;
2106 #endif /* CONFIG_VHT_OVERRIDES */
2107         ssid->proactive_key_caching = -1;
2108 #ifdef CONFIG_IEEE80211W
2109         ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
2110 #endif /* CONFIG_IEEE80211W */
2111 }
2112
2113
2114 /**
2115  * wpa_config_set - Set a variable in network configuration
2116  * @ssid: Pointer to network configuration data
2117  * @var: Variable name, e.g., "ssid"
2118  * @value: Variable value
2119  * @line: Line number in configuration file or 0 if not used
2120  * Returns: 0 on success, -1 on failure
2121  *
2122  * This function can be used to set network configuration variables based on
2123  * both the configuration file and management interface input. The value
2124  * parameter must be in the same format as the text-based configuration file is
2125  * using. For example, strings are using double quotation marks.
2126  */
2127 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
2128                    int line)
2129 {
2130         size_t i;
2131         int ret = 0;
2132
2133         if (ssid == NULL || var == NULL || value == NULL)
2134                 return -1;
2135
2136         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2137                 const struct parse_data *field = &ssid_fields[i];
2138                 if (os_strcmp(var, field->name) != 0)
2139                         continue;
2140
2141                 if (field->parser(field, ssid, line, value)) {
2142                         if (line) {
2143                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
2144                                            "parse %s '%s'.", line, var, value);
2145                         }
2146                         ret = -1;
2147                 }
2148                 break;
2149         }
2150         if (i == NUM_SSID_FIELDS) {
2151                 if (line) {
2152                         wpa_printf(MSG_ERROR, "Line %d: unknown network field "
2153                                    "'%s'.", line, var);
2154                 }
2155                 ret = -1;
2156         }
2157
2158         return ret;
2159 }
2160
2161
2162 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
2163                           const char *value)
2164 {
2165         size_t len;
2166         char *buf;
2167         int ret;
2168
2169         len = os_strlen(value);
2170         buf = os_malloc(len + 3);
2171         if (buf == NULL)
2172                 return -1;
2173         buf[0] = '"';
2174         os_memcpy(buf + 1, value, len);
2175         buf[len + 1] = '"';
2176         buf[len + 2] = '\0';
2177         ret = wpa_config_set(ssid, var, buf, 0);
2178         os_free(buf);
2179         return ret;
2180 }
2181
2182
2183 /**
2184  * wpa_config_get_all - Get all options from network configuration
2185  * @ssid: Pointer to network configuration data
2186  * @get_keys: Determines if keys/passwords will be included in returned list
2187  *      (if they may be exported)
2188  * Returns: %NULL terminated list of all set keys and their values in the form
2189  * of [key1, val1, key2, val2, ... , NULL]
2190  *
2191  * This function can be used to get list of all configured network properties.
2192  * The caller is responsible for freeing the returned list and all its
2193  * elements.
2194  */
2195 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
2196 {
2197         const struct parse_data *field;
2198         char *key, *value;
2199         size_t i;
2200         char **props;
2201         int fields_num;
2202
2203         get_keys = get_keys && ssid->export_keys;
2204
2205         props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
2206         if (!props)
2207                 return NULL;
2208
2209         fields_num = 0;
2210         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2211                 field = &ssid_fields[i];
2212                 if (field->key_data && !get_keys)
2213                         continue;
2214                 value = field->writer(field, ssid);
2215                 if (value == NULL)
2216                         continue;
2217                 if (os_strlen(value) == 0) {
2218                         os_free(value);
2219                         continue;
2220                 }
2221
2222                 key = os_strdup(field->name);
2223                 if (key == NULL) {
2224                         os_free(value);
2225                         goto err;
2226                 }
2227
2228                 props[fields_num * 2] = key;
2229                 props[fields_num * 2 + 1] = value;
2230
2231                 fields_num++;
2232         }
2233
2234         return props;
2235
2236 err:
2237         value = *props;
2238         while (value)
2239                 os_free(value++);
2240         os_free(props);
2241         return NULL;
2242 }
2243
2244
2245 #ifndef NO_CONFIG_WRITE
2246 /**
2247  * wpa_config_get - Get a variable in network configuration
2248  * @ssid: Pointer to network configuration data
2249  * @var: Variable name, e.g., "ssid"
2250  * Returns: Value of the variable or %NULL on failure
2251  *
2252  * This function can be used to get network configuration variables. The
2253  * returned value is a copy of the configuration variable in text format, i.e,.
2254  * the same format that the text-based configuration file and wpa_config_set()
2255  * are using for the value. The caller is responsible for freeing the returned
2256  * value.
2257  */
2258 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
2259 {
2260         size_t i;
2261
2262         if (ssid == NULL || var == NULL)
2263                 return NULL;
2264
2265         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2266                 const struct parse_data *field = &ssid_fields[i];
2267                 if (os_strcmp(var, field->name) == 0)
2268                         return field->writer(field, ssid);
2269         }
2270
2271         return NULL;
2272 }
2273
2274
2275 /**
2276  * wpa_config_get_no_key - Get a variable in network configuration (no keys)
2277  * @ssid: Pointer to network configuration data
2278  * @var: Variable name, e.g., "ssid"
2279  * Returns: Value of the variable or %NULL on failure
2280  *
2281  * This function can be used to get network configuration variable like
2282  * wpa_config_get(). The only difference is that this functions does not expose
2283  * key/password material from the configuration. In case a key/password field
2284  * is requested, the returned value is an empty string or %NULL if the variable
2285  * is not set or "*" if the variable is set (regardless of its value). The
2286  * returned value is a copy of the configuration variable in text format, i.e,.
2287  * the same format that the text-based configuration file and wpa_config_set()
2288  * are using for the value. The caller is responsible for freeing the returned
2289  * value.
2290  */
2291 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
2292 {
2293         size_t i;
2294
2295         if (ssid == NULL || var == NULL)
2296                 return NULL;
2297
2298         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2299                 const struct parse_data *field = &ssid_fields[i];
2300                 if (os_strcmp(var, field->name) == 0) {
2301                         char *res = field->writer(field, ssid);
2302                         if (field->key_data) {
2303                                 if (res && res[0]) {
2304                                         wpa_printf(MSG_DEBUG, "Do not allow "
2305                                                    "key_data field to be "
2306                                                    "exposed");
2307                                         os_free(res);
2308                                         return os_strdup("*");
2309                                 }
2310
2311                                 os_free(res);
2312                                 return NULL;
2313                         }
2314                         return res;
2315                 }
2316         }
2317
2318         return NULL;
2319 }
2320 #endif /* NO_CONFIG_WRITE */
2321
2322
2323 /**
2324  * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
2325  * @ssid: Pointer to network configuration data
2326  *
2327  * This function must be called to update WPA PSK when either SSID or the
2328  * passphrase has changed for the network configuration.
2329  */
2330 void wpa_config_update_psk(struct wpa_ssid *ssid)
2331 {
2332 #ifndef CONFIG_NO_PBKDF2
2333         pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
2334                     ssid->psk, PMK_LEN);
2335         wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
2336                         ssid->psk, PMK_LEN);
2337         ssid->psk_set = 1;
2338 #endif /* CONFIG_NO_PBKDF2 */
2339 }
2340
2341
2342 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
2343                         const char *value, int line)
2344 {
2345         char *val;
2346         size_t len;
2347
2348         if (os_strcmp(var, "priority") == 0) {
2349                 cred->priority = atoi(value);
2350                 return 0;
2351         }
2352
2353         if (os_strcmp(var, "pcsc") == 0) {
2354                 cred->pcsc = atoi(value);
2355                 return 0;
2356         }
2357
2358         if (os_strcmp(var, "eap") == 0) {
2359                 struct eap_method_type method;
2360                 method.method = eap_peer_get_type(value, &method.vendor);
2361                 if (method.vendor == EAP_VENDOR_IETF &&
2362                     method.method == EAP_TYPE_NONE) {
2363                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
2364                                    "for a credential", line, value);
2365                         return -1;
2366                 }
2367                 os_free(cred->eap_method);
2368                 cred->eap_method = os_malloc(sizeof(*cred->eap_method));
2369                 if (cred->eap_method == NULL)
2370                         return -1;
2371                 os_memcpy(cred->eap_method, &method, sizeof(method));
2372                 return 0;
2373         }
2374
2375         if (os_strcmp(var, "password") == 0 &&
2376             os_strncmp(value, "ext:", 4) == 0) {
2377                 os_free(cred->password);
2378                 cred->password = os_strdup(value);
2379                 cred->ext_password = 1;
2380                 return 0;
2381         }
2382
2383         val = wpa_config_parse_string(value, &len);
2384         if (val == NULL) {
2385                 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
2386                            "value '%s'.", line, var, value);
2387                 return -1;
2388         }
2389
2390         if (os_strcmp(var, "realm") == 0) {
2391                 os_free(cred->realm);
2392                 cred->realm = val;
2393                 return 0;
2394         }
2395
2396         if (os_strcmp(var, "username") == 0) {
2397                 os_free(cred->username);
2398                 cred->username = val;
2399                 return 0;
2400         }
2401
2402         if (os_strcmp(var, "password") == 0) {
2403                 os_free(cred->password);
2404                 cred->password = val;
2405                 cred->ext_password = 0;
2406                 return 0;
2407         }
2408
2409         if (os_strcmp(var, "ca_cert") == 0) {
2410                 os_free(cred->ca_cert);
2411                 cred->ca_cert = val;
2412                 return 0;
2413         }
2414
2415         if (os_strcmp(var, "client_cert") == 0) {
2416                 os_free(cred->client_cert);
2417                 cred->client_cert = val;
2418                 return 0;
2419         }
2420
2421         if (os_strcmp(var, "private_key") == 0) {
2422                 os_free(cred->private_key);
2423                 cred->private_key = val;
2424                 return 0;
2425         }
2426
2427         if (os_strcmp(var, "private_key_passwd") == 0) {
2428                 os_free(cred->private_key_passwd);
2429                 cred->private_key_passwd = val;
2430                 return 0;
2431         }
2432
2433         if (os_strcmp(var, "imsi") == 0) {
2434                 os_free(cred->imsi);
2435                 cred->imsi = val;
2436                 return 0;
2437         }
2438
2439         if (os_strcmp(var, "milenage") == 0) {
2440                 os_free(cred->milenage);
2441                 cred->milenage = val;
2442                 return 0;
2443         }
2444
2445         if (os_strcmp(var, "domain_suffix_match") == 0) {
2446                 os_free(cred->domain_suffix_match);
2447                 cred->domain_suffix_match = val;
2448                 return 0;
2449         }
2450
2451         if (os_strcmp(var, "domain") == 0) {
2452                 char **new_domain;
2453                 new_domain = os_realloc_array(cred->domain,
2454                                               cred->num_domain + 1,
2455                                               sizeof(char *));
2456                 if (new_domain == NULL) {
2457                         os_free(val);
2458                         return -1;
2459                 }
2460                 new_domain[cred->num_domain++] = val;
2461                 cred->domain = new_domain;
2462                 return 0;
2463         }
2464
2465         if (os_strcmp(var, "phase1") == 0) {
2466                 os_free(cred->phase1);
2467                 cred->phase1 = val;
2468                 return 0;
2469         }
2470
2471         if (os_strcmp(var, "phase2") == 0) {
2472                 os_free(cred->phase2);
2473                 cred->phase2 = val;
2474                 return 0;
2475         }
2476
2477         if (os_strcmp(var, "roaming_consortium") == 0) {
2478                 if (len < 3 || len > sizeof(cred->roaming_consortium)) {
2479                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2480                                    "roaming_consortium length %d (3..15 "
2481                                    "expected)", line, (int) len);
2482                         os_free(val);
2483                         return -1;
2484                 }
2485                 os_memcpy(cred->roaming_consortium, val, len);
2486                 cred->roaming_consortium_len = len;
2487                 os_free(val);
2488                 return 0;
2489         }
2490
2491         if (os_strcmp(var, "required_roaming_consortium") == 0) {
2492                 if (len < 3 || len > sizeof(cred->required_roaming_consortium))
2493                 {
2494                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2495                                    "required_roaming_consortium length %d "
2496                                    "(3..15 expected)", line, (int) len);
2497                         os_free(val);
2498                         return -1;
2499                 }
2500                 os_memcpy(cred->required_roaming_consortium, val, len);
2501                 cred->required_roaming_consortium_len = len;
2502                 os_free(val);
2503                 return 0;
2504         }
2505
2506         if (os_strcmp(var, "excluded_ssid") == 0) {
2507                 struct excluded_ssid *e;
2508
2509                 if (len > MAX_SSID_LEN) {
2510                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2511                                    "excluded_ssid length %d", line, (int) len);
2512                         os_free(val);
2513                         return -1;
2514                 }
2515
2516                 e = os_realloc_array(cred->excluded_ssid,
2517                                      cred->num_excluded_ssid + 1,
2518                                      sizeof(struct excluded_ssid));
2519                 if (e == NULL) {
2520                         os_free(val);
2521                         return -1;
2522                 }
2523                 cred->excluded_ssid = e;
2524
2525                 e = &cred->excluded_ssid[cred->num_excluded_ssid++];
2526                 os_memcpy(e->ssid, val, len);
2527                 e->ssid_len = len;
2528
2529                 os_free(val);
2530
2531                 return 0;
2532         }
2533
2534         if (line) {
2535                 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
2536                            line, var);
2537         }
2538
2539         os_free(val);
2540
2541         return -1;
2542 }
2543
2544
2545 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
2546 {
2547         struct wpa_cred *cred;
2548
2549         cred = config->cred;
2550         while (cred) {
2551                 if (id == cred->id)
2552                         break;
2553                 cred = cred->next;
2554         }
2555
2556         return cred;
2557 }
2558
2559
2560 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
2561 {
2562         int id;
2563         struct wpa_cred *cred, *last = NULL;
2564
2565         id = -1;
2566         cred = config->cred;
2567         while (cred) {
2568                 if (cred->id > id)
2569                         id = cred->id;
2570                 last = cred;
2571                 cred = cred->next;
2572         }
2573         id++;
2574
2575         cred = os_zalloc(sizeof(*cred));
2576         if (cred == NULL)
2577                 return NULL;
2578         cred->id = id;
2579         if (last)
2580                 last->next = cred;
2581         else
2582                 config->cred = cred;
2583
2584         return cred;
2585 }
2586
2587
2588 int wpa_config_remove_cred(struct wpa_config *config, int id)
2589 {
2590         struct wpa_cred *cred, *prev = NULL;
2591
2592         cred = config->cred;
2593         while (cred) {
2594                 if (id == cred->id)
2595                         break;
2596                 prev = cred;
2597                 cred = cred->next;
2598         }
2599
2600         if (cred == NULL)
2601                 return -1;
2602
2603         if (prev)
2604                 prev->next = cred->next;
2605         else
2606                 config->cred = cred->next;
2607
2608         wpa_config_free_cred(cred);
2609         return 0;
2610 }
2611
2612
2613 #ifndef CONFIG_NO_CONFIG_BLOBS
2614 /**
2615  * wpa_config_get_blob - Get a named configuration blob
2616  * @config: Configuration data from wpa_config_read()
2617  * @name: Name of the blob
2618  * Returns: Pointer to blob data or %NULL if not found
2619  */
2620 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
2621                                                    const char *name)
2622 {
2623         struct wpa_config_blob *blob = config->blobs;
2624
2625         while (blob) {
2626                 if (os_strcmp(blob->name, name) == 0)
2627                         return blob;
2628                 blob = blob->next;
2629         }
2630         return NULL;
2631 }
2632
2633
2634 /**
2635  * wpa_config_set_blob - Set or add a named configuration blob
2636  * @config: Configuration data from wpa_config_read()
2637  * @blob: New value for the blob
2638  *
2639  * Adds a new configuration blob or replaces the current value of an existing
2640  * blob.
2641  */
2642 void wpa_config_set_blob(struct wpa_config *config,
2643                          struct wpa_config_blob *blob)
2644 {
2645         wpa_config_remove_blob(config, blob->name);
2646         blob->next = config->blobs;
2647         config->blobs = blob;
2648 }
2649
2650
2651 /**
2652  * wpa_config_free_blob - Free blob data
2653  * @blob: Pointer to blob to be freed
2654  */
2655 void wpa_config_free_blob(struct wpa_config_blob *blob)
2656 {
2657         if (blob) {
2658                 os_free(blob->name);
2659                 os_free(blob->data);
2660                 os_free(blob);
2661         }
2662 }
2663
2664
2665 /**
2666  * wpa_config_remove_blob - Remove a named configuration blob
2667  * @config: Configuration data from wpa_config_read()
2668  * @name: Name of the blob to remove
2669  * Returns: 0 if blob was removed or -1 if blob was not found
2670  */
2671 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
2672 {
2673         struct wpa_config_blob *pos = config->blobs, *prev = NULL;
2674
2675         while (pos) {
2676                 if (os_strcmp(pos->name, name) == 0) {
2677                         if (prev)
2678                                 prev->next = pos->next;
2679                         else
2680                                 config->blobs = pos->next;
2681                         wpa_config_free_blob(pos);
2682                         return 0;
2683                 }
2684                 prev = pos;
2685                 pos = pos->next;
2686         }
2687
2688         return -1;
2689 }
2690 #endif /* CONFIG_NO_CONFIG_BLOBS */
2691
2692
2693 /**
2694  * wpa_config_alloc_empty - Allocate an empty configuration
2695  * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
2696  * socket
2697  * @driver_param: Driver parameters
2698  * Returns: Pointer to allocated configuration data or %NULL on failure
2699  */
2700 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
2701                                            const char *driver_param)
2702 {
2703         struct wpa_config *config;
2704         const int aCWmin = 4, aCWmax = 10;
2705         const struct hostapd_wmm_ac_params ac_bk =
2706                 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
2707         const struct hostapd_wmm_ac_params ac_be =
2708                 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
2709         const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
2710                 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
2711         const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
2712                 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
2713
2714         config = os_zalloc(sizeof(*config));
2715         if (config == NULL)
2716                 return NULL;
2717         config->eapol_version = DEFAULT_EAPOL_VERSION;
2718         config->ap_scan = DEFAULT_AP_SCAN;
2719         config->fast_reauth = DEFAULT_FAST_REAUTH;
2720         config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
2721         config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
2722         config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
2723         config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
2724         config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
2725         config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
2726         config->max_num_sta = DEFAULT_MAX_NUM_STA;
2727         config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
2728         config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
2729         config->wmm_ac_params[0] = ac_be;
2730         config->wmm_ac_params[1] = ac_bk;
2731         config->wmm_ac_params[2] = ac_vi;
2732         config->wmm_ac_params[3] = ac_vo;
2733
2734         if (ctrl_interface)
2735                 config->ctrl_interface = os_strdup(ctrl_interface);
2736         if (driver_param)
2737                 config->driver_param = os_strdup(driver_param);
2738
2739         return config;
2740 }
2741
2742
2743 #ifndef CONFIG_NO_STDOUT_DEBUG
2744 /**
2745  * wpa_config_debug_dump_networks - Debug dump of configured networks
2746  * @config: Configuration data from wpa_config_read()
2747  */
2748 void wpa_config_debug_dump_networks(struct wpa_config *config)
2749 {
2750         int prio;
2751         struct wpa_ssid *ssid;
2752
2753         for (prio = 0; prio < config->num_prio; prio++) {
2754                 ssid = config->pssid[prio];
2755                 wpa_printf(MSG_DEBUG, "Priority group %d",
2756                            ssid->priority);
2757                 while (ssid) {
2758                         wpa_printf(MSG_DEBUG, "   id=%d ssid='%s'",
2759                                    ssid->id,
2760                                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2761                         ssid = ssid->pnext;
2762                 }
2763         }
2764 }
2765 #endif /* CONFIG_NO_STDOUT_DEBUG */
2766
2767
2768 struct global_parse_data {
2769         char *name;
2770         int (*parser)(const struct global_parse_data *data,
2771                       struct wpa_config *config, int line, const char *value);
2772         void *param1, *param2, *param3;
2773         unsigned int changed_flag;
2774 };
2775
2776
2777 static int wpa_global_config_parse_int(const struct global_parse_data *data,
2778                                        struct wpa_config *config, int line,
2779                                        const char *pos)
2780 {
2781         int val, *dst;
2782         char *end;
2783
2784         dst = (int *) (((u8 *) config) + (long) data->param1);
2785         val = strtol(pos, &end, 0);
2786         if (*end) {
2787                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
2788                            line, pos);
2789                 return -1;
2790         }
2791         *dst = val;
2792
2793         wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
2794
2795         if (data->param2 && *dst < (long) data->param2) {
2796                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
2797                            "min_value=%ld)", line, data->name, *dst,
2798                            (long) data->param2);
2799                 *dst = (long) data->param2;
2800                 return -1;
2801         }
2802
2803         if (data->param3 && *dst > (long) data->param3) {
2804                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
2805                            "max_value=%ld)", line, data->name, *dst,
2806                            (long) data->param3);
2807                 *dst = (long) data->param3;
2808                 return -1;
2809         }
2810
2811         return 0;
2812 }
2813
2814
2815 static int wpa_global_config_parse_str(const struct global_parse_data *data,
2816                                        struct wpa_config *config, int line,
2817                                        const char *pos)
2818 {
2819         size_t len;
2820         char **dst, *tmp;
2821
2822         len = os_strlen(pos);
2823         if (data->param2 && len < (size_t) data->param2) {
2824                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
2825                            "min_len=%ld)", line, data->name,
2826                            (unsigned long) len, (long) data->param2);
2827                 return -1;
2828         }
2829
2830         if (data->param3 && len > (size_t) data->param3) {
2831                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
2832                            "max_len=%ld)", line, data->name,
2833                            (unsigned long) len, (long) data->param3);
2834                 return -1;
2835         }
2836
2837         tmp = os_strdup(pos);
2838         if (tmp == NULL)
2839                 return -1;
2840
2841         dst = (char **) (((u8 *) config) + (long) data->param1);
2842         os_free(*dst);
2843         *dst = tmp;
2844         wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
2845
2846         return 0;
2847 }
2848
2849
2850 static int wpa_global_config_parse_bin(const struct global_parse_data *data,
2851                                        struct wpa_config *config, int line,
2852                                        const char *pos)
2853 {
2854         size_t len;
2855         struct wpabuf **dst, *tmp;
2856
2857         len = os_strlen(pos);
2858         if (len & 0x01)
2859                 return -1;
2860
2861         tmp = wpabuf_alloc(len / 2);
2862         if (tmp == NULL)
2863                 return -1;
2864
2865         if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) {
2866                 wpabuf_free(tmp);
2867                 return -1;
2868         }
2869
2870         dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
2871         wpabuf_free(*dst);
2872         *dst = tmp;
2873         wpa_printf(MSG_DEBUG, "%s", data->name);
2874
2875         return 0;
2876 }
2877
2878
2879 static int wpa_config_process_freq_list(const struct global_parse_data *data,
2880                                         struct wpa_config *config, int line,
2881                                         const char *value)
2882 {
2883         int *freqs;
2884
2885         freqs = wpa_config_parse_int_array(value);
2886         if (freqs == NULL)
2887                 return -1;
2888         if (freqs[0] == 0) {
2889                 os_free(freqs);
2890                 freqs = NULL;
2891         }
2892         os_free(config->freq_list);
2893         config->freq_list = freqs;
2894         return 0;
2895 }
2896
2897
2898 static int wpa_config_process_country(const struct global_parse_data *data,
2899                                       struct wpa_config *config, int line,
2900                                       const char *pos)
2901 {
2902         if (!pos[0] || !pos[1]) {
2903                 wpa_printf(MSG_DEBUG, "Invalid country set");
2904                 return -1;
2905         }
2906         config->country[0] = pos[0];
2907         config->country[1] = pos[1];
2908         wpa_printf(MSG_DEBUG, "country='%c%c'",
2909                    config->country[0], config->country[1]);
2910         return 0;
2911 }
2912
2913
2914 static int wpa_config_process_load_dynamic_eap(
2915         const struct global_parse_data *data, struct wpa_config *config,
2916         int line, const char *so)
2917 {
2918         int ret;
2919         wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
2920         ret = eap_peer_method_load(so);
2921         if (ret == -2) {
2922                 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
2923                            "reloading.");
2924         } else if (ret) {
2925                 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
2926                            "method '%s'.", line, so);
2927                 return -1;
2928         }
2929
2930         return 0;
2931 }
2932
2933
2934 #ifdef CONFIG_WPS
2935
2936 static int wpa_config_process_uuid(const struct global_parse_data *data,
2937                                    struct wpa_config *config, int line,
2938                                    const char *pos)
2939 {
2940         char buf[40];
2941         if (uuid_str2bin(pos, config->uuid)) {
2942                 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
2943                 return -1;
2944         }
2945         uuid_bin2str(config->uuid, buf, sizeof(buf));
2946         wpa_printf(MSG_DEBUG, "uuid=%s", buf);
2947         return 0;
2948 }
2949
2950
2951 static int wpa_config_process_device_type(
2952         const struct global_parse_data *data,
2953         struct wpa_config *config, int line, const char *pos)
2954 {
2955         return wps_dev_type_str2bin(pos, config->device_type);
2956 }
2957
2958
2959 static int wpa_config_process_os_version(const struct global_parse_data *data,
2960                                          struct wpa_config *config, int line,
2961                                          const char *pos)
2962 {
2963         if (hexstr2bin(pos, config->os_version, 4)) {
2964                 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
2965                 return -1;
2966         }
2967         wpa_printf(MSG_DEBUG, "os_version=%08x",
2968                    WPA_GET_BE32(config->os_version));
2969         return 0;
2970 }
2971
2972
2973 static int wpa_config_process_wps_vendor_ext_m1(
2974         const struct global_parse_data *data,
2975         struct wpa_config *config, int line, const char *pos)
2976 {
2977         struct wpabuf *tmp;
2978         int len = os_strlen(pos) / 2;
2979         u8 *p;
2980
2981         if (!len) {
2982                 wpa_printf(MSG_ERROR, "Line %d: "
2983                            "invalid wps_vendor_ext_m1", line);
2984                 return -1;
2985         }
2986
2987         tmp = wpabuf_alloc(len);
2988         if (tmp) {
2989                 p = wpabuf_put(tmp, len);
2990
2991                 if (hexstr2bin(pos, p, len)) {
2992                         wpa_printf(MSG_ERROR, "Line %d: "
2993                                    "invalid wps_vendor_ext_m1", line);
2994                         wpabuf_free(tmp);
2995                         return -1;
2996                 }
2997
2998                 wpabuf_free(config->wps_vendor_ext_m1);
2999                 config->wps_vendor_ext_m1 = tmp;
3000         } else {
3001                 wpa_printf(MSG_ERROR, "Can not allocate "
3002                            "memory for wps_vendor_ext_m1");
3003                 return -1;
3004         }
3005
3006         return 0;
3007 }
3008
3009 #endif /* CONFIG_WPS */
3010
3011 #ifdef CONFIG_P2P
3012 static int wpa_config_process_sec_device_type(
3013         const struct global_parse_data *data,
3014         struct wpa_config *config, int line, const char *pos)
3015 {
3016         int idx;
3017
3018         if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
3019                 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
3020                            "items", line);
3021                 return -1;
3022         }
3023
3024         idx = config->num_sec_device_types;
3025
3026         if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
3027                 return -1;
3028
3029         config->num_sec_device_types++;
3030         return 0;
3031 }
3032
3033
3034 static int wpa_config_process_p2p_pref_chan(
3035         const struct global_parse_data *data,
3036         struct wpa_config *config, int line, const char *pos)
3037 {
3038         struct p2p_channel *pref = NULL, *n;
3039         unsigned int num = 0;
3040         const char *pos2;
3041         u8 op_class, chan;
3042
3043         /* format: class:chan,class:chan,... */
3044
3045         while (*pos) {
3046                 op_class = atoi(pos);
3047                 pos2 = os_strchr(pos, ':');
3048                 if (pos2 == NULL)
3049                         goto fail;
3050                 pos2++;
3051                 chan = atoi(pos2);
3052
3053                 n = os_realloc_array(pref, num + 1,
3054                                      sizeof(struct p2p_channel));
3055                 if (n == NULL)
3056                         goto fail;
3057                 pref = n;
3058                 pref[num].op_class = op_class;
3059                 pref[num].chan = chan;
3060                 num++;
3061
3062                 pos = os_strchr(pos2, ',');
3063                 if (pos == NULL)
3064                         break;
3065                 pos++;
3066         }
3067
3068         os_free(config->p2p_pref_chan);
3069         config->p2p_pref_chan = pref;
3070         config->num_p2p_pref_chan = num;
3071         wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
3072                     (u8 *) config->p2p_pref_chan,
3073                     config->num_p2p_pref_chan * sizeof(struct p2p_channel));
3074
3075         return 0;
3076
3077 fail:
3078         os_free(pref);
3079         wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
3080         return -1;
3081 }
3082 #endif /* CONFIG_P2P */
3083
3084
3085 static int wpa_config_process_hessid(
3086         const struct global_parse_data *data,
3087         struct wpa_config *config, int line, const char *pos)
3088 {
3089         if (hwaddr_aton2(pos, config->hessid) < 0) {
3090                 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
3091                            line, pos);
3092                 return -1;
3093         }
3094
3095         return 0;
3096 }
3097
3098
3099 static int wpa_config_process_sae_groups(
3100         const struct global_parse_data *data,
3101         struct wpa_config *config, int line, const char *pos)
3102 {
3103         int *groups = wpa_config_parse_int_array(pos);
3104         if (groups == NULL) {
3105                 wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'",
3106                            line, pos);
3107                 return -1;
3108         }
3109
3110         os_free(config->sae_groups);
3111         config->sae_groups = groups;
3112
3113         return 0;
3114 }
3115
3116
3117 static int wpa_config_process_ap_vendor_elements(
3118         const struct global_parse_data *data,
3119         struct wpa_config *config, int line, const char *pos)
3120 {
3121         struct wpabuf *tmp;
3122         int len = os_strlen(pos) / 2;
3123         u8 *p;
3124
3125         if (!len) {
3126                 wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements",
3127                            line);
3128                 return -1;
3129         }
3130
3131         tmp = wpabuf_alloc(len);
3132         if (tmp) {
3133                 p = wpabuf_put(tmp, len);
3134
3135                 if (hexstr2bin(pos, p, len)) {
3136                         wpa_printf(MSG_ERROR, "Line %d: invalid "
3137                                    "ap_vendor_elements", line);
3138                         wpabuf_free(tmp);
3139                         return -1;
3140                 }
3141
3142                 wpabuf_free(config->ap_vendor_elements);
3143                 config->ap_vendor_elements = tmp;
3144         } else {
3145                 wpa_printf(MSG_ERROR, "Cannot allocate memory for "
3146                            "ap_vendor_elements");
3147                 return -1;
3148         }
3149
3150         return 0;
3151 }
3152
3153
3154 #ifdef CONFIG_CTRL_IFACE
3155 static int wpa_config_process_no_ctrl_interface(
3156         const struct global_parse_data *data,
3157         struct wpa_config *config, int line, const char *pos)
3158 {
3159         wpa_printf(MSG_DEBUG, "no_ctrl_interface -> ctrl_interface=NULL");
3160         os_free(config->ctrl_interface);
3161         config->ctrl_interface = NULL;
3162         return 0;
3163 }
3164 #endif /* CONFIG_CTRL_IFACE */
3165
3166
3167 #ifdef OFFSET
3168 #undef OFFSET
3169 #endif /* OFFSET */
3170 /* OFFSET: Get offset of a variable within the wpa_config structure */
3171 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
3172
3173 #define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL
3174 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL
3175 #define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f)
3176 #define INT(f) _INT(f), NULL, NULL
3177 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
3178 #define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f)
3179 #define STR(f) _STR(f), NULL, NULL
3180 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
3181 #define BIN(f) #f, wpa_global_config_parse_bin, OFFSET(f), NULL, NULL
3182
3183 static const struct global_parse_data global_fields[] = {
3184 #ifdef CONFIG_CTRL_IFACE
3185         { STR(ctrl_interface), 0 },
3186         { FUNC_NO_VAR(no_ctrl_interface), 0 },
3187         { STR(ctrl_interface_group), 0 } /* deprecated */,
3188 #endif /* CONFIG_CTRL_IFACE */
3189         { INT_RANGE(eapol_version, 1, 2), 0 },
3190         { INT(ap_scan), 0 },
3191         { INT(disable_scan_offload), 0 },
3192         { INT(fast_reauth), 0 },
3193         { STR(opensc_engine_path), 0 },
3194         { STR(pkcs11_engine_path), 0 },
3195         { STR(pkcs11_module_path), 0 },
3196         { STR(pcsc_reader), 0 },
3197         { STR(pcsc_pin), 0 },
3198         { INT(external_sim), 0 },
3199         { STR(driver_param), 0 },
3200         { INT(dot11RSNAConfigPMKLifetime), 0 },
3201         { INT(dot11RSNAConfigPMKReauthThreshold), 0 },
3202         { INT(dot11RSNAConfigSATimeout), 0 },
3203 #ifndef CONFIG_NO_CONFIG_WRITE
3204         { INT(update_config), 0 },
3205 #endif /* CONFIG_NO_CONFIG_WRITE */
3206         { FUNC_NO_VAR(load_dynamic_eap), 0 },
3207 #ifdef CONFIG_WPS
3208         { FUNC(uuid), CFG_CHANGED_UUID },
3209         { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME },
3210         { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
3211         { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
3212         { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
3213         { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
3214         { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
3215         { FUNC(os_version), CFG_CHANGED_OS_VERSION },
3216         { STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
3217         { INT_RANGE(wps_cred_processing, 0, 2), 0 },
3218         { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
3219 #endif /* CONFIG_WPS */
3220 #ifdef CONFIG_P2P
3221         { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
3222         { INT(p2p_listen_reg_class), 0 },
3223         { INT(p2p_listen_channel), 0 },
3224         { INT(p2p_oper_reg_class), CFG_CHANGED_P2P_OPER_CHANNEL },
3225         { INT(p2p_oper_channel), CFG_CHANGED_P2P_OPER_CHANNEL },
3226         { INT_RANGE(p2p_go_intent, 0, 15), 0 },
3227         { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
3228         { INT_RANGE(persistent_reconnect, 0, 1), 0 },
3229         { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
3230         { INT(p2p_group_idle), 0 },
3231         { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
3232         { INT(p2p_go_ht40), 0 },
3233         { INT(p2p_disabled), 0 },
3234         { INT(p2p_no_group_iface), 0 },
3235         { INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 },
3236 #endif /* CONFIG_P2P */
3237         { FUNC(country), CFG_CHANGED_COUNTRY },
3238         { INT(bss_max_count), 0 },
3239         { INT(bss_expiration_age), 0 },
3240         { INT(bss_expiration_scan_count), 0 },
3241         { INT_RANGE(filter_ssids, 0, 1), 0 },
3242         { INT_RANGE(filter_rssi, -100, 0), 0 },
3243         { INT(max_num_sta), 0 },
3244         { INT_RANGE(disassoc_low_ack, 0, 1), 0 },
3245 #ifdef CONFIG_HS20
3246         { INT_RANGE(hs20, 0, 1), 0 },
3247 #endif /* CONFIG_HS20 */
3248         { INT_RANGE(interworking, 0, 1), 0 },
3249         { FUNC(hessid), 0 },
3250         { INT_RANGE(access_network_type, 0, 15), 0 },
3251         { INT_RANGE(pbc_in_m1, 0, 1), 0 },
3252         { STR(autoscan), 0 },
3253         { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff),
3254           CFG_CHANGED_NFC_PASSWORD_TOKEN },
3255         { BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3256         { BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3257         { BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3258         { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
3259         { INT(p2p_go_max_inactivity), 0 },
3260         { INT_RANGE(auto_interworking, 0, 1), 0 },
3261         { INT(okc), 0 },
3262         { INT(pmf), 0 },
3263         { FUNC(sae_groups), 0 },
3264         { INT(dtim_period), 0 },
3265         { INT(beacon_int), 0 },
3266         { FUNC(ap_vendor_elements), 0 },
3267         { INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
3268         { FUNC(freq_list), 0 },
3269         { INT(scan_cur_freq), 0 },
3270         { INT(sched_scan_interval), 0 },
3271 };
3272
3273 #undef FUNC
3274 #undef _INT
3275 #undef INT
3276 #undef INT_RANGE
3277 #undef _STR
3278 #undef STR
3279 #undef STR_RANGE
3280 #undef BIN
3281 #define NUM_GLOBAL_FIELDS (sizeof(global_fields) / sizeof(global_fields[0]))
3282
3283
3284 int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
3285 {
3286         size_t i;
3287         int ret = 0;
3288
3289         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
3290                 const struct global_parse_data *field = &global_fields[i];
3291                 size_t flen = os_strlen(field->name);
3292                 if (os_strncmp(pos, field->name, flen) != 0 ||
3293                     pos[flen] != '=')
3294                         continue;
3295
3296                 if (field->parser(field, config, line, pos + flen + 1)) {
3297                         wpa_printf(MSG_ERROR, "Line %d: failed to "
3298                                    "parse '%s'.", line, pos);
3299                         ret = -1;
3300                 }
3301                 if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN)
3302                         config->wps_nfc_pw_from_config = 1;
3303                 config->changed_parameters |= field->changed_flag;
3304                 break;
3305         }
3306         if (i == NUM_GLOBAL_FIELDS) {
3307 #ifdef CONFIG_AP
3308                 if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
3309                         char *tmp = os_strchr(pos, '=');
3310                         if (tmp == NULL) {
3311                                 if (line < 0)
3312                                         return -1;
3313                                 wpa_printf(MSG_ERROR, "Line %d: invalid line "
3314                                            "'%s'", line, pos);
3315                                 return -1;
3316                         }
3317                         *tmp++ = '\0';
3318                         if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
3319                                                   tmp)) {
3320                                 wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
3321                                            "AC item", line);
3322                                 return -1;
3323                         }
3324                 }
3325 #endif /* CONFIG_AP */
3326                 if (line < 0)
3327                         return -1;
3328                 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
3329                            line, pos);
3330                 ret = -1;
3331         }
3332
3333         return ret;
3334 }