wpa_supplicant/config.c

   1 /*
   2  * WPA Supplicant / Configuration parser and common functions
   3  * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "utils/uuid.h"
  13 #include "utils/ip_addr.h"
  14 #include "crypto/sha1.h"
  15 #include "rsn_supp/wpa.h"
  16 #include "eap_peer/eap.h"
  17 #include "p2p/p2p.h"
  18 #include "config.h"
  19
  20
  21 #if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
  22 #define NO_CONFIG_WRITE
  23 #endif
  24
  25 /*
  26  * Structure for network configuration parsing. This data is used to implement
  27  * a generic parser for each network block variable. The table of configuration
  28  * variables is defined below in this file (ssid_fields[]).
  29  */
  30 struct parse_data {
  31         /* Configuration variable name */
  32         char *name;
  33
  34         /* Parser function for this variable */
  35         int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
  36                       int line, const char *value);
  37
  38 #ifndef NO_CONFIG_WRITE
  39         /* Writer function (i.e., to get the variable in text format from
  40          * internal presentation). */
  41         char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
  42 #endif /* NO_CONFIG_WRITE */
  43
  44         /* Variable specific parameters for the parser. */
  45         void *param1, *param2, *param3, *param4;
  46
  47         /* 0 = this variable can be included in debug output and ctrl_iface
  48          * 1 = this variable contains key/private data and it must not be
  49          *     included in debug output unless explicitly requested. In
  50          *     addition, this variable will not be readable through the
  51          *     ctrl_iface.
  52          */
  53         int key_data;
  54 };
  55
  56
  57 static int wpa_config_parse_str(const struct parse_data *data,
  58                                 struct wpa_ssid *ssid,
  59                                 int line, const char *value)
  60 {
  61         size_t res_len, *dst_len;
  62         char **dst, *tmp;
  63
  64         if (os_strcmp(value, "NULL") == 0) {
  65                 wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
  66                            data->name);
  67                 tmp = NULL;
  68                 res_len = 0;
  69                 goto set;
  70         }
  71
  72         tmp = wpa_config_parse_string(value, &res_len);
  73         if (tmp == NULL) {
  74                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
  75                            line, data->name,
  76                            data->key_data ? "[KEY DATA REMOVED]" : value);
  77                 return -1;
  78         }
  79
  80         if (data->key_data) {
  81                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
  82                                       (u8 *) tmp, res_len);
  83         } else {
  84                 wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
  85                                   (u8 *) tmp, res_len);
  86         }
  87
  88         if (data->param3 && res_len < (size_t) data->param3) {
  89                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
  90                            "min_len=%ld)", line, data->name,
  91                            (unsigned long) res_len, (long) data->param3);
  92                 os_free(tmp);
  93                 return -1;
  94         }
  95
  96         if (data->param4 && res_len > (size_t) data->param4) {
  97                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
  98                            "max_len=%ld)", line, data->name,
  99                            (unsigned long) res_len, (long) data->param4);
 100                 os_free(tmp);
 101                 return -1;
 102         }
 103
 104 set:
 105         dst = (char **) (((u8 *) ssid) + (long) data->param1);
 106         dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
 107         os_free(*dst);
 108         *dst = tmp;
 109         if (data->param2)
 110                 *dst_len = res_len;
 111
 112         return 0;
 113 }
 114
 115
 116 #ifndef NO_CONFIG_WRITE
 117 static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
 118 {
 119         char *buf;
 120
 121         buf = os_malloc(len + 3);
 122         if (buf == NULL)
 123                 return NULL;
 124         buf[0] = '"';
 125         os_memcpy(buf + 1, value, len);
 126         buf[len + 1] = '"';
 127         buf[len + 2] = '\0';
 128
 129         return buf;
 130 }
 131
 132
 133 static char * wpa_config_write_string_hex(const u8 *value, size_t len)
 134 {
 135         char *buf;
 136
 137         buf = os_zalloc(2 * len + 1);
 138         if (buf == NULL)
 139                 return NULL;
 140         wpa_snprintf_hex(buf, 2 * len + 1, value, len);
 141
 142         return buf;
 143 }
 144
 145
 146 static char * wpa_config_write_string(const u8 *value, size_t len)
 147 {
 148         if (value == NULL)
 149                 return NULL;
 150
 151         if (is_hex(value, len))
 152                 return wpa_config_write_string_hex(value, len);
 153         else
 154                 return wpa_config_write_string_ascii(value, len);
 155 }
 156
 157
 158 static char * wpa_config_write_str(const struct parse_data *data,
 159                                    struct wpa_ssid *ssid)
 160 {
 161         size_t len;
 162         char **src;
 163
 164         src = (char **) (((u8 *) ssid) + (long) data->param1);
 165         if (*src == NULL)
 166                 return NULL;
 167
 168         if (data->param2)
 169                 len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
 170         else
 171                 len = os_strlen(*src);
 172
 173         return wpa_config_write_string((const u8 *) *src, len);
 174 }
 175 #endif /* NO_CONFIG_WRITE */
 176
 177
 178 static int wpa_config_parse_int(const struct parse_data *data,
 179                                 struct wpa_ssid *ssid,
 180                                 int line, const char *value)
 181 {
 182         int val, *dst;
 183         char *end;
 184
 185         dst = (int *) (((u8 *) ssid) + (long) data->param1);
 186         val = strtol(value, &end, 0);
 187         if (*end) {
 188                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
 189                            line, value);
 190                 return -1;
 191         }
 192         *dst = val;
 193         wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
 194
 195         if (data->param3 && *dst < (long) data->param3) {
 196                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
 197                            "min_value=%ld)", line, data->name, *dst,
 198                            (long) data->param3);
 199                 *dst = (long) data->param3;
 200                 return -1;
 201         }
 202
 203         if (data->param4 && *dst > (long) data->param4) {
 204                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
 205                            "max_value=%ld)", line, data->name, *dst,
 206                            (long) data->param4);
 207                 *dst = (long) data->param4;
 208                 return -1;
 209         }
 210
 211         return 0;
 212 }
 213
 214
 215 #ifndef NO_CONFIG_WRITE
 216 static char * wpa_config_write_int(const struct parse_data *data,
 217                                    struct wpa_ssid *ssid)
 218 {
 219         int *src, res;
 220         char *value;
 221
 222         src = (int *) (((u8 *) ssid) + (long) data->param1);
 223
 224         value = os_malloc(20);
 225         if (value == NULL)
 226                 return NULL;
 227         res = os_snprintf(value, 20, "%d", *src);
 228         if (res < 0 || res >= 20) {
 229                 os_free(value);
 230                 return NULL;
 231         }
 232         value[20 - 1] = '\0';
 233         return value;
 234 }
 235 #endif /* NO_CONFIG_WRITE */
 236
 237
 238 static int wpa_config_parse_bssid(const struct parse_data *data,
 239                                   struct wpa_ssid *ssid, int line,
 240                                   const char *value)
 241 {
 242         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
 243             os_strcmp(value, "any") == 0) {
 244                 ssid->bssid_set = 0;
 245                 wpa_printf(MSG_MSGDUMP, "BSSID any");
 246                 return 0;
 247         }
 248         if (hwaddr_aton(value, ssid->bssid)) {
 249                 wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
 250                            line, value);
 251                 return -1;
 252         }
 253         ssid->bssid_set = 1;
 254         wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
 255         return 0;
 256 }
 257
 258
 259 #ifndef NO_CONFIG_WRITE
 260 static char * wpa_config_write_bssid(const struct parse_data *data,
 261                                      struct wpa_ssid *ssid)
 262 {
 263         char *value;
 264         int res;
 265
 266         if (!ssid->bssid_set)
 267                 return NULL;
 268
 269         value = os_malloc(20);
 270         if (value == NULL)
 271                 return NULL;
 272         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
 273         if (res < 0 || res >= 20) {
 274                 os_free(value);
 275                 return NULL;
 276         }
 277         value[20 - 1] = '\0';
 278         return value;
 279 }
 280 #endif /* NO_CONFIG_WRITE */
 281
 282
 283 static int wpa_config_parse_psk(const struct parse_data *data,
 284                                 struct wpa_ssid *ssid, int line,
 285                                 const char *value)
 286 {
 287 #ifdef CONFIG_EXT_PASSWORD
 288         if (os_strncmp(value, "ext:", 4) == 0) {
 289                 os_free(ssid->passphrase);
 290                 ssid->passphrase = NULL;
 291                 ssid->psk_set = 0;
 292                 os_free(ssid->ext_psk);
 293                 ssid->ext_psk = os_strdup(value + 4);
 294                 if (ssid->ext_psk == NULL)
 295                         return -1;
 296                 wpa_printf(MSG_DEBUG, "PSK: External password '%s'",
 297                            ssid->ext_psk);
 298                 return 0;
 299         }
 300 #endif /* CONFIG_EXT_PASSWORD */
 301
 302         if (*value == '"') {
 303 #ifndef CONFIG_NO_PBKDF2
 304                 const char *pos;
 305                 size_t len;
 306
 307                 value++;
 308                 pos = os_strrchr(value, '"');
 309                 if (pos)
 310                         len = pos - value;
 311                 else
 312                         len = os_strlen(value);
 313                 if (len < 8 || len > 63) {
 314                         wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
 315                                    "length %lu (expected: 8..63) '%s'.",
 316                                    line, (unsigned long) len, value);
 317                         return -1;
 318                 }
 319                 wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
 320                                       (u8 *) value, len);
 321                 if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
 322                     os_memcmp(ssid->passphrase, value, len) == 0)
 323                         return 0;
 324                 ssid->psk_set = 0;
 325                 os_free(ssid->passphrase);
 326                 ssid->passphrase = dup_binstr(value, len);
 327                 if (ssid->passphrase == NULL)
 328                         return -1;
 329                 return 0;
 330 #else /* CONFIG_NO_PBKDF2 */
 331                 wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
 332                            "supported.", line);
 333                 return -1;
 334 #endif /* CONFIG_NO_PBKDF2 */
 335         }
 336
 337         if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
 338             value[PMK_LEN * 2] != '\0') {
 339                 wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
 340                            line, value);
 341                 return -1;
 342         }
 343
 344         os_free(ssid->passphrase);
 345         ssid->passphrase = NULL;
 346
 347         ssid->psk_set = 1;
 348         wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
 349         return 0;
 350 }
 351
 352
 353 #ifndef NO_CONFIG_WRITE
 354 static char * wpa_config_write_psk(const struct parse_data *data,
 355                                    struct wpa_ssid *ssid)
 356 {
 357 #ifdef CONFIG_EXT_PASSWORD
 358         if (ssid->ext_psk) {
 359                 size_t len = 4 + os_strlen(ssid->ext_psk) + 1;
 360                 char *buf = os_malloc(len);
 361                 if (buf == NULL)
 362                         return NULL;
 363                 os_snprintf(buf, len, "ext:%s", ssid->ext_psk);
 364                 return buf;
 365         }
 366 #endif /* CONFIG_EXT_PASSWORD */
 367
 368         if (ssid->passphrase)
 369                 return wpa_config_write_string_ascii(
 370                         (const u8 *) ssid->passphrase,
 371                         os_strlen(ssid->passphrase));
 372
 373         if (ssid->psk_set)
 374                 return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
 375
 376         return NULL;
 377 }
 378 #endif /* NO_CONFIG_WRITE */
 379
 380
 381 static int wpa_config_parse_proto(const struct parse_data *data,
 382                                   struct wpa_ssid *ssid, int line,
 383                                   const char *value)
 384 {
 385         int val = 0, last, errors = 0;
 386         char *start, *end, *buf;
 387
 388         buf = os_strdup(value);
 389         if (buf == NULL)
 390                 return -1;
 391         start = buf;
 392
 393         while (*start != '\0') {
 394                 while (*start == ' ' || *start == '\t')
 395                         start++;
 396                 if (*start == '\0')
 397                         break;
 398                 end = start;
 399                 while (*end != ' ' && *end != '\t' && *end != '\0')
 400                         end++;
 401                 last = *end == '\0';
 402                 *end = '\0';
 403                 if (os_strcmp(start, "WPA") == 0)
 404                         val |= WPA_PROTO_WPA;
 405                 else if (os_strcmp(start, "RSN") == 0 ||
 406                          os_strcmp(start, "WPA2") == 0)
 407                         val |= WPA_PROTO_RSN;
 408                 else if (os_strcmp(start, "OSEN") == 0)
 409                         val |= WPA_PROTO_OSEN;
 410                 else {
 411                         wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
 412                                    line, start);
 413                         errors++;
 414                 }
 415
 416                 if (last)
 417                         break;
 418                 start = end + 1;
 419         }
 420         os_free(buf);
 421
 422         if (val == 0) {
 423                 wpa_printf(MSG_ERROR,
 424                            "Line %d: no proto values configured.", line);
 425                 errors++;
 426         }
 427
 428         wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
 429         ssid->proto = val;
 430         return errors ? -1 : 0;
 431 }
 432
 433
 434 #ifndef NO_CONFIG_WRITE
 435 static char * wpa_config_write_proto(const struct parse_data *data,
 436                                      struct wpa_ssid *ssid)
 437 {
 438         int ret;
 439         char *buf, *pos, *end;
 440
 441         pos = buf = os_zalloc(20);
 442         if (buf == NULL)
 443                 return NULL;
 444         end = buf + 20;
 445
 446         if (ssid->proto & WPA_PROTO_WPA) {
 447                 ret = os_snprintf(pos, end - pos, "%sWPA",
 448                                   pos == buf ? "" : " ");
 449                 if (ret < 0 || ret >= end - pos)
 450                         return buf;
 451                 pos += ret;
 452         }
 453
 454         if (ssid->proto & WPA_PROTO_RSN) {
 455                 ret = os_snprintf(pos, end - pos, "%sRSN",
 456                                   pos == buf ? "" : " ");
 457                 if (ret < 0 || ret >= end - pos)
 458                         return buf;
 459                 pos += ret;
 460         }
 461
 462         if (ssid->proto & WPA_PROTO_OSEN) {
 463                 ret = os_snprintf(pos, end - pos, "%sOSEN",
 464                                   pos == buf ? "" : " ");
 465                 if (ret < 0 || ret >= end - pos)
 466                         return buf;
 467                 pos += ret;
 468         }
 469
 470         return buf;
 471 }
 472 #endif /* NO_CONFIG_WRITE */
 473
 474
 475 static int wpa_config_parse_key_mgmt(const struct parse_data *data,
 476                                      struct wpa_ssid *ssid, int line,
 477                                      const char *value)
 478 {
 479         int val = 0, last, errors = 0;
 480         char *start, *end, *buf;
 481
 482         buf = os_strdup(value);
 483         if (buf == NULL)
 484                 return -1;
 485         start = buf;
 486
 487         while (*start != '\0') {
 488                 while (*start == ' ' || *start == '\t')
 489                         start++;
 490                 if (*start == '\0')
 491                         break;
 492                 end = start;
 493                 while (*end != ' ' && *end != '\t' && *end != '\0')
 494                         end++;
 495                 last = *end == '\0';
 496                 *end = '\0';
 497                 if (os_strcmp(start, "WPA-PSK") == 0)
 498                         val |= WPA_KEY_MGMT_PSK;
 499                 else if (os_strcmp(start, "WPA-EAP") == 0)
 500                         val |= WPA_KEY_MGMT_IEEE8021X;
 501                 else if (os_strcmp(start, "IEEE8021X") == 0)
 502                         val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
 503                 else if (os_strcmp(start, "NONE") == 0)
 504                         val |= WPA_KEY_MGMT_NONE;
 505                 else if (os_strcmp(start, "WPA-NONE") == 0)
 506                         val |= WPA_KEY_MGMT_WPA_NONE;
 507 #ifdef CONFIG_IEEE80211R
 508                 else if (os_strcmp(start, "FT-PSK") == 0)
 509                         val |= WPA_KEY_MGMT_FT_PSK;
 510                 else if (os_strcmp(start, "FT-EAP") == 0)
 511                         val |= WPA_KEY_MGMT_FT_IEEE8021X;
 512 #endif /* CONFIG_IEEE80211R */
 513 #ifdef CONFIG_IEEE80211W
 514                 else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
 515                         val |= WPA_KEY_MGMT_PSK_SHA256;
 516                 else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
 517                         val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
 518 #endif /* CONFIG_IEEE80211W */
 519 #ifdef CONFIG_WPS
 520                 else if (os_strcmp(start, "WPS") == 0)
 521                         val |= WPA_KEY_MGMT_WPS;
 522 #endif /* CONFIG_WPS */
 523 #ifdef CONFIG_SAE
 524                 else if (os_strcmp(start, "SAE") == 0)
 525                         val |= WPA_KEY_MGMT_SAE;
 526                 else if (os_strcmp(start, "FT-SAE") == 0)
 527                         val |= WPA_KEY_MGMT_FT_SAE;
 528 #endif /* CONFIG_SAE */
 529 #ifdef CONFIG_HS20
 530                 else if (os_strcmp(start, "OSEN") == 0)
 531                         val |= WPA_KEY_MGMT_OSEN;
 532 #endif /* CONFIG_HS20 */
 533                 else {
 534                         wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
 535                                    line, start);
 536                         errors++;
 537                 }
 538
 539                 if (last)
 540                         break;
 541                 start = end + 1;
 542         }
 543         os_free(buf);
 544
 545         if (val == 0) {
 546                 wpa_printf(MSG_ERROR,
 547                            "Line %d: no key_mgmt values configured.", line);
 548                 errors++;
 549         }
 550
 551         wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
 552         ssid->key_mgmt = val;
 553         return errors ? -1 : 0;
 554 }
 555
 556
 557 #ifndef NO_CONFIG_WRITE
 558 static char * wpa_config_write_key_mgmt(const struct parse_data *data,
 559                                         struct wpa_ssid *ssid)
 560 {
 561         char *buf, *pos, *end;
 562         int ret;
 563
 564         pos = buf = os_zalloc(100);
 565         if (buf == NULL)
 566                 return NULL;
 567         end = buf + 100;
 568
 569         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
 570                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
 571                                   pos == buf ? "" : " ");
 572                 if (ret < 0 || ret >= end - pos) {
 573                         end[-1] = '\0';
 574                         return buf;
 575                 }
 576                 pos += ret;
 577         }
 578
 579         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
 580                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
 581                                   pos == buf ? "" : " ");
 582                 if (ret < 0 || ret >= end - pos) {
 583                         end[-1] = '\0';
 584                         return buf;
 585                 }
 586                 pos += ret;
 587         }
 588
 589         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 590                 ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
 591                                   pos == buf ? "" : " ");
 592                 if (ret < 0 || ret >= end - pos) {
 593                         end[-1] = '\0';
 594                         return buf;
 595                 }
 596                 pos += ret;
 597         }
 598
 599         if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
 600                 ret = os_snprintf(pos, end - pos, "%sNONE",
 601                                   pos == buf ? "" : " ");
 602                 if (ret < 0 || ret >= end - pos) {
 603                         end[-1] = '\0';
 604                         return buf;
 605                 }
 606                 pos += ret;
 607         }
 608
 609         if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
 610                 ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
 611                                   pos == buf ? "" : " ");
 612                 if (ret < 0 || ret >= end - pos) {
 613                         end[-1] = '\0';
 614                         return buf;
 615                 }
 616                 pos += ret;
 617         }
 618
 619 #ifdef CONFIG_IEEE80211R
 620         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) {
 621                 ret = os_snprintf(pos, end - pos, "%sFT-PSK",
 622                                   pos == buf ? "" : " ");
 623                 if (ret < 0 || ret >= end - pos) {
 624                         end[-1] = '\0';
 625                         return buf;
 626                 }
 627                 pos += ret;
 628         }
 629
 630         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
 631                 ret = os_snprintf(pos, end - pos, "%sFT-EAP",
 632                                   pos == buf ? "" : " ");
 633                 if (ret < 0 || ret >= end - pos) {
 634                         end[-1] = '\0';
 635                         return buf;
 636                 }
 637                 pos += ret;
 638         }
 639 #endif /* CONFIG_IEEE80211R */
 640
 641 #ifdef CONFIG_IEEE80211W
 642         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
 643                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
 644                                   pos == buf ? "" : " ");
 645                 if (ret < 0 || ret >= end - pos) {
 646                         end[-1] = '\0';
 647                         return buf;
 648                 }
 649                 pos += ret;
 650         }
 651
 652         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 653                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
 654                                   pos == buf ? "" : " ");
 655                 if (ret < 0 || ret >= end - pos) {
 656                         end[-1] = '\0';
 657                         return buf;
 658                 }
 659                 pos += ret;
 660         }
 661 #endif /* CONFIG_IEEE80211W */
 662
 663 #ifdef CONFIG_WPS
 664         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 665                 ret = os_snprintf(pos, end - pos, "%sWPS",
 666                                   pos == buf ? "" : " ");
 667                 if (ret < 0 || ret >= end - pos) {
 668                         end[-1] = '\0';
 669                         return buf;
 670                 }
 671                 pos += ret;
 672         }
 673 #endif /* CONFIG_WPS */
 674
 675         return buf;
 676 }
 677 #endif /* NO_CONFIG_WRITE */
 678
 679
 680 static int wpa_config_parse_cipher(int line, const char *value)
 681 {
 682         int val = wpa_parse_cipher(value);
 683         if (val < 0) {
 684                 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
 685                            line, value);
 686                 return -1;
 687         }
 688         if (val == 0) {
 689                 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
 690                            line);
 691                 return -1;
 692         }
 693         return val;
 694 }
 695
 696
 697 #ifndef NO_CONFIG_WRITE
 698 static char * wpa_config_write_cipher(int cipher)
 699 {
 700         char *buf = os_zalloc(50);
 701         if (buf == NULL)
 702                 return NULL;
 703
 704         if (wpa_write_ciphers(buf, buf + 50, cipher, " ") < 0) {
 705                 os_free(buf);
 706                 return NULL;
 707         }
 708
 709         return buf;
 710 }
 711 #endif /* NO_CONFIG_WRITE */
 712
 713
 714 static int wpa_config_parse_pairwise(const struct parse_data *data,
 715                                      struct wpa_ssid *ssid, int line,
 716                                      const char *value)
 717 {
 718         int val;
 719         val = wpa_config_parse_cipher(line, value);
 720         if (val == -1)
 721                 return -1;
 722         if (val & ~WPA_ALLOWED_PAIRWISE_CIPHERS) {
 723                 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
 724                            "(0x%x).", line, val);
 725                 return -1;
 726         }
 727
 728         wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
 729         ssid->pairwise_cipher = val;
 730         return 0;
 731 }
 732
 733
 734 #ifndef NO_CONFIG_WRITE
 735 static char * wpa_config_write_pairwise(const struct parse_data *data,
 736                                         struct wpa_ssid *ssid)
 737 {
 738         return wpa_config_write_cipher(ssid->pairwise_cipher);
 739 }
 740 #endif /* NO_CONFIG_WRITE */
 741
 742
 743 static int wpa_config_parse_group(const struct parse_data *data,
 744                                   struct wpa_ssid *ssid, int line,
 745                                   const char *value)
 746 {
 747         int val;
 748         val = wpa_config_parse_cipher(line, value);
 749         if (val == -1)
 750                 return -1;
 751         if (val & ~WPA_ALLOWED_GROUP_CIPHERS) {
 752                 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
 753                            "(0x%x).", line, val);
 754                 return -1;
 755         }
 756
 757         wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
 758         ssid->group_cipher = val;
 759         return 0;
 760 }
 761
 762
 763 #ifndef NO_CONFIG_WRITE
 764 static char * wpa_config_write_group(const struct parse_data *data,
 765                                      struct wpa_ssid *ssid)
 766 {
 767         return wpa_config_write_cipher(ssid->group_cipher);
 768 }
 769 #endif /* NO_CONFIG_WRITE */
 770
 771
 772 static int wpa_config_parse_auth_alg(const struct parse_data *data,
 773                                      struct wpa_ssid *ssid, int line,
 774                                      const char *value)
 775 {
 776         int val = 0, last, errors = 0;
 777         char *start, *end, *buf;
 778
 779         buf = os_strdup(value);
 780         if (buf == NULL)
 781                 return -1;
 782         start = buf;
 783
 784         while (*start != '\0') {
 785                 while (*start == ' ' || *start == '\t')
 786                         start++;
 787                 if (*start == '\0')
 788                         break;
 789                 end = start;
 790                 while (*end != ' ' && *end != '\t' && *end != '\0')
 791                         end++;
 792                 last = *end == '\0';
 793                 *end = '\0';
 794                 if (os_strcmp(start, "OPEN") == 0)
 795                         val |= WPA_AUTH_ALG_OPEN;
 796                 else if (os_strcmp(start, "SHARED") == 0)
 797                         val |= WPA_AUTH_ALG_SHARED;
 798                 else if (os_strcmp(start, "LEAP") == 0)
 799                         val |= WPA_AUTH_ALG_LEAP;
 800                 else {
 801                         wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
 802                                    line, start);
 803                         errors++;
 804                 }
 805
 806                 if (last)
 807                         break;
 808                 start = end + 1;
 809         }
 810         os_free(buf);
 811
 812         if (val == 0) {
 813                 wpa_printf(MSG_ERROR,
 814                            "Line %d: no auth_alg values configured.", line);
 815                 errors++;
 816         }
 817
 818         wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
 819         ssid->auth_alg = val;
 820         return errors ? -1 : 0;
 821 }
 822
 823
 824 #ifndef NO_CONFIG_WRITE
 825 static char * wpa_config_write_auth_alg(const struct parse_data *data,
 826                                         struct wpa_ssid *ssid)
 827 {
 828         char *buf, *pos, *end;
 829         int ret;
 830
 831         pos = buf = os_zalloc(30);
 832         if (buf == NULL)
 833                 return NULL;
 834         end = buf + 30;
 835
 836         if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
 837                 ret = os_snprintf(pos, end - pos, "%sOPEN",
 838                                   pos == buf ? "" : " ");
 839                 if (ret < 0 || ret >= end - pos) {
 840                         end[-1] = '\0';
 841                         return buf;
 842                 }
 843                 pos += ret;
 844         }
 845
 846         if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
 847                 ret = os_snprintf(pos, end - pos, "%sSHARED",
 848                                   pos == buf ? "" : " ");
 849                 if (ret < 0 || ret >= end - pos) {
 850                         end[-1] = '\0';
 851                         return buf;
 852                 }
 853                 pos += ret;
 854         }
 855
 856         if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
 857                 ret = os_snprintf(pos, end - pos, "%sLEAP",
 858                                   pos == buf ? "" : " ");
 859                 if (ret < 0 || ret >= end - pos) {
 860                         end[-1] = '\0';
 861                         return buf;
 862                 }
 863                 pos += ret;
 864         }
 865
 866         return buf;
 867 }
 868 #endif /* NO_CONFIG_WRITE */
 869
 870
 871 static int * wpa_config_parse_int_array(const char *value)
 872 {
 873         int *freqs;
 874         size_t used, len;
 875         const char *pos;
 876
 877         used = 0;
 878         len = 10;
 879         freqs = os_calloc(len + 1, sizeof(int));
 880         if (freqs == NULL)
 881                 return NULL;
 882
 883         pos = value;
 884         while (pos) {
 885                 while (*pos == ' ')
 886                         pos++;
 887                 if (used == len) {
 888                         int *n;
 889                         size_t i;
 890                         n = os_realloc_array(freqs, len * 2 + 1, sizeof(int));
 891                         if (n == NULL) {
 892                                 os_free(freqs);
 893                                 return NULL;
 894                         }
 895                         for (i = len; i <= len * 2; i++)
 896                                 n[i] = 0;
 897                         freqs = n;
 898                         len *= 2;
 899                 }
 900
 901                 freqs[used] = atoi(pos);
 902                 if (freqs[used] == 0)
 903                         break;
 904                 used++;
 905                 pos = os_strchr(pos + 1, ' ');
 906         }
 907
 908         return freqs;
 909 }
 910
 911
 912 static int wpa_config_parse_scan_freq(const struct parse_data *data,
 913                                       struct wpa_ssid *ssid, int line,
 914                                       const char *value)
 915 {
 916         int *freqs;
 917
 918         freqs = wpa_config_parse_int_array(value);
 919         if (freqs == NULL)
 920                 return -1;
 921         if (freqs[0] == 0) {
 922                 os_free(freqs);
 923                 freqs = NULL;
 924         }
 925         os_free(ssid->scan_freq);
 926         ssid->scan_freq = freqs;
 927
 928         return 0;
 929 }
 930
 931
 932 static int wpa_config_parse_freq_list(const struct parse_data *data,
 933                                       struct wpa_ssid *ssid, int line,
 934                                       const char *value)
 935 {
 936         int *freqs;
 937
 938         freqs = wpa_config_parse_int_array(value);
 939         if (freqs == NULL)
 940                 return -1;
 941         if (freqs[0] == 0) {
 942                 os_free(freqs);
 943                 freqs = NULL;
 944         }
 945         os_free(ssid->freq_list);
 946         ssid->freq_list = freqs;
 947
 948         return 0;
 949 }
 950
 951
 952 #ifndef NO_CONFIG_WRITE
 953 static char * wpa_config_write_freqs(const struct parse_data *data,
 954                                      const int *freqs)
 955 {
 956         char *buf, *pos, *end;
 957         int i, ret;
 958         size_t count;
 959
 960         if (freqs == NULL)
 961                 return NULL;
 962
 963         count = 0;
 964         for (i = 0; freqs[i]; i++)
 965                 count++;
 966
 967         pos = buf = os_zalloc(10 * count + 1);
 968         if (buf == NULL)
 969                 return NULL;
 970         end = buf + 10 * count + 1;
 971
 972         for (i = 0; freqs[i]; i++) {
 973                 ret = os_snprintf(pos, end - pos, "%s%u",
 974                                   i == 0 ? "" : " ", freqs[i]);
 975                 if (ret < 0 || ret >= end - pos) {
 976                         end[-1] = '\0';
 977                         return buf;
 978                 }
 979                 pos += ret;
 980         }
 981
 982         return buf;
 983 }
 984
 985
 986 static char * wpa_config_write_scan_freq(const struct parse_data *data,
 987                                          struct wpa_ssid *ssid)
 988 {
 989         return wpa_config_write_freqs(data, ssid->scan_freq);
 990 }
 991
 992
 993 static char * wpa_config_write_freq_list(const struct parse_data *data,
 994                                          struct wpa_ssid *ssid)
 995 {
 996         return wpa_config_write_freqs(data, ssid->freq_list);
 997 }
 998 #endif /* NO_CONFIG_WRITE */
 999
1000
1001 #ifdef IEEE8021X_EAPOL
1002 static int wpa_config_parse_eap(const struct parse_data *data,
1003                                 struct wpa_ssid *ssid, int line,
1004                                 const char *value)
1005 {
1006         int last, errors = 0;
1007         char *start, *end, *buf;
1008         struct eap_method_type *methods = NULL, *tmp;
1009         size_t num_methods = 0;
1010
1011         buf = os_strdup(value);
1012         if (buf == NULL)
1013                 return -1;
1014         start = buf;
1015
1016         while (*start != '\0') {
1017                 while (*start == ' ' || *start == '\t')
1018                         start++;
1019                 if (*start == '\0')
1020                         break;
1021                 end = start;
1022                 while (*end != ' ' && *end != '\t' && *end != '\0')
1023                         end++;
1024                 last = *end == '\0';
1025                 *end = '\0';
1026                 tmp = methods;
1027                 methods = os_realloc_array(methods, num_methods + 1,
1028                                            sizeof(*methods));
1029                 if (methods == NULL) {
1030                         os_free(tmp);
1031                         os_free(buf);
1032                         return -1;
1033                 }
1034                 methods[num_methods].method = eap_peer_get_type(
1035                         start, &methods[num_methods].vendor);
1036                 if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1037                     methods[num_methods].method == EAP_TYPE_NONE) {
1038                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
1039                                    "'%s'", line, start);
1040                         wpa_printf(MSG_ERROR, "You may need to add support for"
1041                                    " this EAP method during wpa_supplicant\n"
1042                                    "build time configuration.\n"
1043                                    "See README for more information.");
1044                         errors++;
1045                 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1046                            methods[num_methods].method == EAP_TYPE_LEAP)
1047                         ssid->leap++;
1048                 else
1049                         ssid->non_leap++;
1050                 num_methods++;
1051                 if (last)
1052                         break;
1053                 start = end + 1;
1054         }
1055         os_free(buf);
1056
1057         tmp = methods;
1058         methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods));
1059         if (methods == NULL) {
1060                 os_free(tmp);
1061                 return -1;
1062         }
1063         methods[num_methods].vendor = EAP_VENDOR_IETF;
1064         methods[num_methods].method = EAP_TYPE_NONE;
1065         num_methods++;
1066
1067         wpa_hexdump(MSG_MSGDUMP, "eap methods",
1068                     (u8 *) methods, num_methods * sizeof(*methods));
1069         os_free(ssid->eap.eap_methods);
1070         ssid->eap.eap_methods = methods;
1071         return errors ? -1 : 0;
1072 }
1073
1074
1075 static char * wpa_config_write_eap(const struct parse_data *data,
1076                                    struct wpa_ssid *ssid)
1077 {
1078         int i, ret;
1079         char *buf, *pos, *end;
1080         const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
1081         const char *name;
1082
1083         if (eap_methods == NULL)
1084                 return NULL;
1085
1086         pos = buf = os_zalloc(100);
1087         if (buf == NULL)
1088                 return NULL;
1089         end = buf + 100;
1090
1091         for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
1092                      eap_methods[i].method != EAP_TYPE_NONE; i++) {
1093                 name = eap_get_name(eap_methods[i].vendor,
1094                                     eap_methods[i].method);
1095                 if (name) {
1096                         ret = os_snprintf(pos, end - pos, "%s%s",
1097                                           pos == buf ? "" : " ", name);
1098                         if (ret < 0 || ret >= end - pos)
1099                                 break;
1100                         pos += ret;
1101                 }
1102         }
1103
1104         end[-1] = '\0';
1105
1106         return buf;
1107 }
1108
1109
1110 static int wpa_config_parse_password(const struct parse_data *data,
1111                                      struct wpa_ssid *ssid, int line,
1112                                      const char *value)
1113 {
1114         u8 *hash;
1115
1116         if (os_strcmp(value, "NULL") == 0) {
1117                 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
1118                 os_free(ssid->eap.password);
1119                 ssid->eap.password = NULL;
1120                 ssid->eap.password_len = 0;
1121                 return 0;
1122         }
1123
1124 #ifdef CONFIG_EXT_PASSWORD
1125         if (os_strncmp(value, "ext:", 4) == 0) {
1126                 char *name = os_strdup(value + 4);
1127                 if (name == NULL)
1128                         return -1;
1129                 os_free(ssid->eap.password);
1130                 ssid->eap.password = (u8 *) name;
1131                 ssid->eap.password_len = os_strlen(name);
1132                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1133                 ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD;
1134                 return 0;
1135         }
1136 #endif /* CONFIG_EXT_PASSWORD */
1137
1138         if (os_strncmp(value, "hash:", 5) != 0) {
1139                 char *tmp;
1140                 size_t res_len;
1141
1142                 tmp = wpa_config_parse_string(value, &res_len);
1143                 if (tmp == NULL) {
1144                         wpa_printf(MSG_ERROR, "Line %d: failed to parse "
1145                                    "password.", line);
1146                         return -1;
1147                 }
1148                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
1149                                       (u8 *) tmp, res_len);
1150
1151                 os_free(ssid->eap.password);
1152                 ssid->eap.password = (u8 *) tmp;
1153                 ssid->eap.password_len = res_len;
1154                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1155                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1156
1157                 return 0;
1158         }
1159
1160
1161         /* NtPasswordHash: hash:<32 hex digits> */
1162         if (os_strlen(value + 5) != 2 * 16) {
1163                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length "
1164                            "(expected 32 hex digits)", line);
1165                 return -1;
1166         }
1167
1168         hash = os_malloc(16);
1169         if (hash == NULL)
1170                 return -1;
1171
1172         if (hexstr2bin(value + 5, hash, 16)) {
1173                 os_free(hash);
1174                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
1175                 return -1;
1176         }
1177
1178         wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
1179
1180         os_free(ssid->eap.password);
1181         ssid->eap.password = hash;
1182         ssid->eap.password_len = 16;
1183         ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1184         ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1185
1186         return 0;
1187 }
1188
1189
1190 static char * wpa_config_write_password(const struct parse_data *data,
1191                                         struct wpa_ssid *ssid)
1192 {
1193         char *buf;
1194
1195         if (ssid->eap.password == NULL)
1196                 return NULL;
1197
1198 #ifdef CONFIG_EXT_PASSWORD
1199         if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) {
1200                 buf = os_zalloc(4 + ssid->eap.password_len + 1);
1201                 if (buf == NULL)
1202                         return NULL;
1203                 os_memcpy(buf, "ext:", 4);
1204                 os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len);
1205                 return buf;
1206         }
1207 #endif /* CONFIG_EXT_PASSWORD */
1208
1209         if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
1210                 return wpa_config_write_string(
1211                         ssid->eap.password, ssid->eap.password_len);
1212         }
1213
1214         buf = os_malloc(5 + 32 + 1);
1215         if (buf == NULL)
1216                 return NULL;
1217
1218         os_memcpy(buf, "hash:", 5);
1219         wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
1220
1221         return buf;
1222 }
1223 #endif /* IEEE8021X_EAPOL */
1224
1225
1226 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
1227                                     const char *value, int idx)
1228 {
1229         char *buf, title[20];
1230         int res;
1231
1232         buf = wpa_config_parse_string(value, len);
1233         if (buf == NULL) {
1234                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
1235                            line, idx, value);
1236                 return -1;
1237         }
1238         if (*len > MAX_WEP_KEY_LEN) {
1239                 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
1240                            line, idx, value);
1241                 os_free(buf);
1242                 return -1;
1243         }
1244         if (*len && *len != 5 && *len != 13 && *len != 16) {
1245                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - "
1246                            "this network block will be ignored",
1247                            line, (unsigned int) *len);
1248         }
1249         os_memcpy(key, buf, *len);
1250         os_free(buf);
1251         res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
1252         if (res >= 0 && (size_t) res < sizeof(title))
1253                 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
1254         return 0;
1255 }
1256
1257
1258 static int wpa_config_parse_wep_key0(const struct parse_data *data,
1259                                      struct wpa_ssid *ssid, int line,
1260                                      const char *value)
1261 {
1262         return wpa_config_parse_wep_key(ssid->wep_key[0],
1263                                         &ssid->wep_key_len[0], line,
1264                                         value, 0);
1265 }
1266
1267
1268 static int wpa_config_parse_wep_key1(const struct parse_data *data,
1269                                      struct wpa_ssid *ssid, int line,
1270                                      const char *value)
1271 {
1272         return wpa_config_parse_wep_key(ssid->wep_key[1],
1273                                         &ssid->wep_key_len[1], line,
1274                                         value, 1);
1275 }
1276
1277
1278 static int wpa_config_parse_wep_key2(const struct parse_data *data,
1279                                      struct wpa_ssid *ssid, int line,
1280                                      const char *value)
1281 {
1282         return wpa_config_parse_wep_key(ssid->wep_key[2],
1283                                         &ssid->wep_key_len[2], line,
1284                                         value, 2);
1285 }
1286
1287
1288 static int wpa_config_parse_wep_key3(const struct parse_data *data,
1289                                      struct wpa_ssid *ssid, int line,
1290                                      const char *value)
1291 {
1292         return wpa_config_parse_wep_key(ssid->wep_key[3],
1293                                         &ssid->wep_key_len[3], line,
1294                                         value, 3);
1295 }
1296
1297
1298 #ifndef NO_CONFIG_WRITE
1299 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
1300 {
1301         if (ssid->wep_key_len[idx] == 0)
1302                 return NULL;
1303         return wpa_config_write_string(ssid->wep_key[idx],
1304                                        ssid->wep_key_len[idx]);
1305 }
1306
1307
1308 static char * wpa_config_write_wep_key0(const struct parse_data *data,
1309                                         struct wpa_ssid *ssid)
1310 {
1311         return wpa_config_write_wep_key(ssid, 0);
1312 }
1313
1314
1315 static char * wpa_config_write_wep_key1(const struct parse_data *data,
1316                                         struct wpa_ssid *ssid)
1317 {
1318         return wpa_config_write_wep_key(ssid, 1);
1319 }
1320
1321
1322 static char * wpa_config_write_wep_key2(const struct parse_data *data,
1323                                         struct wpa_ssid *ssid)
1324 {
1325         return wpa_config_write_wep_key(ssid, 2);
1326 }
1327
1328
1329 static char * wpa_config_write_wep_key3(const struct parse_data *data,
1330                                         struct wpa_ssid *ssid)
1331 {
1332         return wpa_config_write_wep_key(ssid, 3);
1333 }
1334 #endif /* NO_CONFIG_WRITE */
1335
1336
1337 #ifdef CONFIG_P2P
1338
1339 static int wpa_config_parse_go_p2p_dev_addr(const struct parse_data *data,
1340                                             struct wpa_ssid *ssid, int line,
1341                                             const char *value)
1342 {
1343         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
1344             os_strcmp(value, "any") == 0) {
1345                 os_memset(ssid->go_p2p_dev_addr, 0, ETH_ALEN);
1346                 wpa_printf(MSG_MSGDUMP, "GO P2P Device Address any");
1347                 return 0;
1348         }
1349         if (hwaddr_aton(value, ssid->go_p2p_dev_addr)) {
1350                 wpa_printf(MSG_ERROR, "Line %d: Invalid GO P2P Device Address '%s'.",
1351                            line, value);
1352                 return -1;
1353         }
1354         ssid->bssid_set = 1;
1355         wpa_printf(MSG_MSGDUMP, "GO P2P Device Address " MACSTR,
1356                    MAC2STR(ssid->go_p2p_dev_addr));
1357         return 0;
1358 }
1359
1360
1361 #ifndef NO_CONFIG_WRITE
1362 static char * wpa_config_write_go_p2p_dev_addr(const struct parse_data *data,
1363                                                struct wpa_ssid *ssid)
1364 {
1365         char *value;
1366         int res;
1367
1368         if (is_zero_ether_addr(ssid->go_p2p_dev_addr))
1369                 return NULL;
1370
1371         value = os_malloc(20);
1372         if (value == NULL)
1373                 return NULL;
1374         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->go_p2p_dev_addr));
1375         if (res < 0 || res >= 20) {
1376                 os_free(value);
1377                 return NULL;
1378         }
1379         value[20 - 1] = '\0';
1380         return value;
1381 }
1382 #endif /* NO_CONFIG_WRITE */
1383
1384
1385 static int wpa_config_parse_p2p_client_list(const struct parse_data *data,
1386                                             struct wpa_ssid *ssid, int line,
1387                                             const char *value)
1388 {
1389         const char *pos;
1390         u8 *buf, *n, addr[ETH_ALEN];
1391         size_t count;
1392
1393         buf = NULL;
1394         count = 0;
1395
1396         pos = value;
1397         while (pos && *pos) {
1398                 while (*pos == ' ')
1399                         pos++;
1400
1401                 if (hwaddr_aton(pos, addr)) {
1402                         if (count == 0) {
1403                                 wpa_printf(MSG_ERROR, "Line %d: Invalid "
1404                                            "p2p_client_list address '%s'.",
1405                                            line, value);
1406                                 os_free(buf);
1407                                 return -1;
1408                         }
1409                         /* continue anyway since this could have been from a
1410                          * truncated configuration file line */
1411                         wpa_printf(MSG_INFO, "Line %d: Ignore likely "
1412                                    "truncated p2p_client_list address '%s'",
1413                                    line, pos);
1414                 } else {
1415                         n = os_realloc_array(buf, count + 1, ETH_ALEN);
1416                         if (n == NULL) {
1417                                 os_free(buf);
1418                                 return -1;
1419                         }
1420                         buf = n;
1421                         os_memmove(buf + ETH_ALEN, buf, count * ETH_ALEN);
1422                         os_memcpy(buf, addr, ETH_ALEN);
1423                         count++;
1424                         wpa_hexdump(MSG_MSGDUMP, "p2p_client_list",
1425                                     addr, ETH_ALEN);
1426                 }
1427
1428                 pos = os_strchr(pos, ' ');
1429         }
1430
1431         os_free(ssid->p2p_client_list);
1432         ssid->p2p_client_list = buf;
1433         ssid->num_p2p_clients = count;
1434
1435         return 0;
1436 }
1437
1438
1439 #ifndef NO_CONFIG_WRITE
1440 static char * wpa_config_write_p2p_client_list(const struct parse_data *data,
1441                                                struct wpa_ssid *ssid)
1442 {
1443         char *value, *end, *pos;
1444         int res;
1445         size_t i;
1446
1447         if (ssid->p2p_client_list == NULL || ssid->num_p2p_clients == 0)
1448                 return NULL;
1449
1450         value = os_malloc(20 * ssid->num_p2p_clients);
1451         if (value == NULL)
1452                 return NULL;
1453         pos = value;
1454         end = value + 20 * ssid->num_p2p_clients;
1455
1456         for (i = ssid->num_p2p_clients; i > 0; i--) {
1457                 res = os_snprintf(pos, end - pos, MACSTR " ",
1458                                   MAC2STR(ssid->p2p_client_list +
1459                                           (i - 1) * ETH_ALEN));
1460                 if (res < 0 || res >= end - pos) {
1461                         os_free(value);
1462                         return NULL;
1463                 }
1464                 pos += res;
1465         }
1466
1467         if (pos > value)
1468                 pos[-1] = '\0';
1469
1470         return value;
1471 }
1472 #endif /* NO_CONFIG_WRITE */
1473
1474
1475 static int wpa_config_parse_psk_list(const struct parse_data *data,
1476                                      struct wpa_ssid *ssid, int line,
1477                                      const char *value)
1478 {
1479         struct psk_list_entry *p;
1480         const char *pos;
1481
1482         p = os_zalloc(sizeof(*p));
1483         if (p == NULL)
1484                 return -1;
1485
1486         pos = value;
1487         if (os_strncmp(pos, "P2P-", 4) == 0) {
1488                 p->p2p = 1;
1489                 pos += 4;
1490         }
1491
1492         if (hwaddr_aton(pos, p->addr)) {
1493                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list address '%s'",
1494                            line, pos);
1495                 os_free(p);
1496                 return -1;
1497         }
1498         pos += 17;
1499         if (*pos != '-') {
1500                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list '%s'",
1501                            line, pos);
1502                 os_free(p);
1503                 return -1;
1504         }
1505         pos++;
1506
1507         if (hexstr2bin(pos, p->psk, PMK_LEN) || pos[PMK_LEN * 2] != '\0') {
1508                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list PSK '%s'",
1509                            line, pos);
1510                 os_free(p);
1511                 return -1;
1512         }
1513
1514         dl_list_add(&ssid->psk_list, &p->list);
1515
1516         return 0;
1517 }
1518
1519
1520 #ifndef NO_CONFIG_WRITE
1521 static char * wpa_config_write_psk_list(const struct parse_data *data,
1522                                         struct wpa_ssid *ssid)
1523 {
1524         return NULL;
1525 }
1526 #endif /* NO_CONFIG_WRITE */
1527
1528 #endif /* CONFIG_P2P */
1529
1530 /* Helper macros for network block parser */
1531
1532 #ifdef OFFSET
1533 #undef OFFSET
1534 #endif /* OFFSET */
1535 /* OFFSET: Get offset of a variable within the wpa_ssid structure */
1536 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
1537
1538 /* STR: Define a string variable for an ASCII string; f = field name */
1539 #ifdef NO_CONFIG_WRITE
1540 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
1541 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f)
1542 #else /* NO_CONFIG_WRITE */
1543 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
1544 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f)
1545 #endif /* NO_CONFIG_WRITE */
1546 #define STR(f) _STR(f), NULL, NULL, NULL, 0
1547 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0
1548 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
1549 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1
1550
1551 /* STR_LEN: Define a string variable with a separate variable for storing the
1552  * data length. Unlike STR(), this can be used to store arbitrary binary data
1553  * (i.e., even nul termination character). */
1554 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
1555 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len)
1556 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
1557 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0
1558 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
1559
1560 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
1561  * explicitly specified. */
1562 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
1563 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
1564 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
1565
1566 #ifdef NO_CONFIG_WRITE
1567 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
1568 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0
1569 #else /* NO_CONFIG_WRITE */
1570 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1571         OFFSET(f), (void *) 0
1572 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1573         OFFSET(eap.f), (void *) 0
1574 #endif /* NO_CONFIG_WRITE */
1575
1576 /* INT: Define an integer variable */
1577 #define INT(f) _INT(f), NULL, NULL, 0
1578 #define INTe(f) _INTe(f), NULL, NULL, 0
1579
1580 /* INT_RANGE: Define an integer variable with allowed value range */
1581 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
1582
1583 /* FUNC: Define a configuration variable that uses a custom function for
1584  * parsing and writing the value. */
1585 #ifdef NO_CONFIG_WRITE
1586 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
1587 #else /* NO_CONFIG_WRITE */
1588 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
1589         NULL, NULL, NULL, NULL
1590 #endif /* NO_CONFIG_WRITE */
1591 #define FUNC(f) _FUNC(f), 0
1592 #define FUNC_KEY(f) _FUNC(f), 1
1593
1594 /*
1595  * Table of network configuration variables. This table is used to parse each
1596  * network configuration variable, e.g., each line in wpa_supplicant.conf file
1597  * that is inside a network block.
1598  *
1599  * This table is generated using the helper macros defined above and with
1600  * generous help from the C pre-processor. The field name is stored as a string
1601  * into .name and for STR and INT types, the offset of the target buffer within
1602  * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
1603  * offset to the field containing the length of the configuration variable.
1604  * .param3 and .param4 can be used to mark the allowed range (length for STR
1605  * and value for INT).
1606  *
1607  * For each configuration line in wpa_supplicant.conf, the parser goes through
1608  * this table and select the entry that matches with the field name. The parser
1609  * function (.parser) is then called to parse the actual value of the field.
1610  *
1611  * This kind of mechanism makes it easy to add new configuration parameters,
1612  * since only one line needs to be added into this table and into the
1613  * struct wpa_ssid definition if the new variable is either a string or
1614  * integer. More complex types will need to use their own parser and writer
1615  * functions.
1616  */
1617 static const struct parse_data ssid_fields[] = {
1618         { STR_RANGE(ssid, 0, MAX_SSID_LEN) },
1619         { INT_RANGE(scan_ssid, 0, 1) },
1620         { FUNC(bssid) },
1621         { FUNC_KEY(psk) },
1622         { FUNC(proto) },
1623         { FUNC(key_mgmt) },
1624         { INT(bg_scan_period) },
1625         { FUNC(pairwise) },
1626         { FUNC(group) },
1627         { FUNC(auth_alg) },
1628         { FUNC(scan_freq) },
1629         { FUNC(freq_list) },
1630 #ifdef IEEE8021X_EAPOL
1631         { FUNC(eap) },
1632         { STR_LENe(identity) },
1633         { STR_LENe(anonymous_identity) },
1634         { FUNC_KEY(password) },
1635         { STRe(ca_cert) },
1636         { STRe(ca_path) },
1637         { STRe(client_cert) },
1638         { STRe(private_key) },
1639         { STR_KEYe(private_key_passwd) },
1640         { STRe(dh_file) },
1641         { STRe(subject_match) },
1642         { STRe(altsubject_match) },
1643         { STRe(domain_suffix_match) },
1644         { STRe(ca_cert2) },
1645         { STRe(ca_path2) },
1646         { STRe(client_cert2) },
1647         { STRe(private_key2) },
1648         { STR_KEYe(private_key2_passwd) },
1649         { STRe(dh_file2) },
1650         { STRe(subject_match2) },
1651         { STRe(altsubject_match2) },
1652         { STRe(domain_suffix_match2) },
1653         { STRe(phase1) },
1654         { STRe(phase2) },
1655         { STRe(pcsc) },
1656         { STR_KEYe(pin) },
1657         { STRe(engine_id) },
1658         { STRe(key_id) },
1659         { STRe(cert_id) },
1660         { STRe(ca_cert_id) },
1661         { STR_KEYe(pin2) },
1662         { STRe(engine2_id) },
1663         { STRe(key2_id) },
1664         { STRe(cert2_id) },
1665         { STRe(ca_cert2_id) },
1666         { INTe(engine) },
1667         { INTe(engine2) },
1668         { INT(eapol_flags) },
1669         { INTe(sim_num) },
1670 #endif /* IEEE8021X_EAPOL */
1671         { FUNC_KEY(wep_key0) },
1672         { FUNC_KEY(wep_key1) },
1673         { FUNC_KEY(wep_key2) },
1674         { FUNC_KEY(wep_key3) },
1675         { INT(wep_tx_keyidx) },
1676         { INT(priority) },
1677 #ifdef IEEE8021X_EAPOL
1678         { INT(eap_workaround) },
1679         { STRe(pac_file) },
1680         { INTe(fragment_size) },
1681         { INTe(ocsp) },
1682 #endif /* IEEE8021X_EAPOL */
1683         { INT_RANGE(mode, 0, 4) },
1684         { INT_RANGE(proactive_key_caching, 0, 1) },
1685         { INT_RANGE(disabled, 0, 2) },
1686         { STR(id_str) },
1687 #ifdef CONFIG_IEEE80211W
1688         { INT_RANGE(ieee80211w, 0, 2) },
1689 #endif /* CONFIG_IEEE80211W */
1690         { INT_RANGE(peerkey, 0, 1) },
1691         { INT_RANGE(mixed_cell, 0, 1) },
1692         { INT_RANGE(frequency, 0, 65000) },
1693         { INT(wpa_ptk_rekey) },
1694         { STR(bgscan) },
1695         { INT_RANGE(ignore_broadcast_ssid, 0, 2) },
1696 #ifdef CONFIG_P2P
1697         { FUNC(go_p2p_dev_addr) },
1698         { FUNC(p2p_client_list) },
1699         { FUNC(psk_list) },
1700 #endif /* CONFIG_P2P */
1701 #ifdef CONFIG_HT_OVERRIDES
1702         { INT_RANGE(disable_ht, 0, 1) },
1703         { INT_RANGE(disable_ht40, -1, 1) },
1704         { INT_RANGE(disable_sgi, 0, 1) },
1705         { INT_RANGE(disable_ldpc, 0, 1) },
1706         { INT_RANGE(ht40_intolerant, 0, 1) },
1707         { INT_RANGE(disable_max_amsdu, -1, 1) },
1708         { INT_RANGE(ampdu_factor, -1, 3) },
1709         { INT_RANGE(ampdu_density, -1, 7) },
1710         { STR(ht_mcs) },
1711 #endif /* CONFIG_HT_OVERRIDES */
1712 #ifdef CONFIG_VHT_OVERRIDES
1713         { INT_RANGE(disable_vht, 0, 1) },
1714         { INT(vht_capa) },
1715         { INT(vht_capa_mask) },
1716         { INT_RANGE(vht_rx_mcs_nss_1, -1, 3) },
1717         { INT_RANGE(vht_rx_mcs_nss_2, -1, 3) },
1718         { INT_RANGE(vht_rx_mcs_nss_3, -1, 3) },
1719         { INT_RANGE(vht_rx_mcs_nss_4, -1, 3) },
1720         { INT_RANGE(vht_rx_mcs_nss_5, -1, 3) },
1721         { INT_RANGE(vht_rx_mcs_nss_6, -1, 3) },
1722         { INT_RANGE(vht_rx_mcs_nss_7, -1, 3) },
1723         { INT_RANGE(vht_rx_mcs_nss_8, -1, 3) },
1724         { INT_RANGE(vht_tx_mcs_nss_1, -1, 3) },
1725         { INT_RANGE(vht_tx_mcs_nss_2, -1, 3) },
1726         { INT_RANGE(vht_tx_mcs_nss_3, -1, 3) },
1727         { INT_RANGE(vht_tx_mcs_nss_4, -1, 3) },
1728         { INT_RANGE(vht_tx_mcs_nss_5, -1, 3) },
1729         { INT_RANGE(vht_tx_mcs_nss_6, -1, 3) },
1730         { INT_RANGE(vht_tx_mcs_nss_7, -1, 3) },
1731         { INT_RANGE(vht_tx_mcs_nss_8, -1, 3) },
1732 #endif /* CONFIG_VHT_OVERRIDES */
1733         { INT(ap_max_inactivity) },
1734         { INT(dtim_period) },
1735         { INT(beacon_int) },
1736 #ifdef CONFIG_MACSEC
1737         { INT_RANGE(macsec_policy, 0, 1) },
1738 #endif /* CONFIG_MACSEC */
1739 };
1740
1741 #undef OFFSET
1742 #undef _STR
1743 #undef STR
1744 #undef STR_KEY
1745 #undef _STR_LEN
1746 #undef STR_LEN
1747 #undef STR_LEN_KEY
1748 #undef _STR_RANGE
1749 #undef STR_RANGE
1750 #undef STR_RANGE_KEY
1751 #undef _INT
1752 #undef INT
1753 #undef INT_RANGE
1754 #undef _FUNC
1755 #undef FUNC
1756 #undef FUNC_KEY
1757 #define NUM_SSID_FIELDS ARRAY_SIZE(ssid_fields)
1758
1759
1760 /**
1761  * wpa_config_add_prio_network - Add a network to priority lists
1762  * @config: Configuration data from wpa_config_read()
1763  * @ssid: Pointer to the network configuration to be added to the list
1764  * Returns: 0 on success, -1 on failure
1765  *
1766  * This function is used to add a network block to the priority list of
1767  * networks. This must be called for each network when reading in the full
1768  * configuration. In addition, this can be used indirectly when updating
1769  * priorities by calling wpa_config_update_prio_list().
1770  */
1771 int wpa_config_add_prio_network(struct wpa_config *config,
1772                                 struct wpa_ssid *ssid)
1773 {
1774         int prio;
1775         struct wpa_ssid *prev, **nlist;
1776
1777         /*
1778          * Add to an existing priority list if one is available for the
1779          * configured priority level for this network.
1780          */
1781         for (prio = 0; prio < config->num_prio; prio++) {
1782                 prev = config->pssid[prio];
1783                 if (prev->priority == ssid->priority) {
1784                         while (prev->pnext)
1785                                 prev = prev->pnext;
1786                         prev->pnext = ssid;
1787                         return 0;
1788                 }
1789         }
1790
1791         /* First network for this priority - add a new priority list */
1792         nlist = os_realloc_array(config->pssid, config->num_prio + 1,
1793                                  sizeof(struct wpa_ssid *));
1794         if (nlist == NULL)
1795                 return -1;
1796
1797         for (prio = 0; prio < config->num_prio; prio++) {
1798                 if (nlist[prio]->priority < ssid->priority) {
1799                         os_memmove(&nlist[prio + 1], &nlist[prio],
1800                                    (config->num_prio - prio) *
1801                                    sizeof(struct wpa_ssid *));
1802                         break;
1803                 }
1804         }
1805
1806         nlist[prio] = ssid;
1807         config->num_prio++;
1808         config->pssid = nlist;
1809
1810         return 0;
1811 }
1812
1813
1814 /**
1815  * wpa_config_update_prio_list - Update network priority list
1816  * @config: Configuration data from wpa_config_read()
1817  * Returns: 0 on success, -1 on failure
1818  *
1819  * This function is called to update the priority list of networks in the
1820  * configuration when a network is being added or removed. This is also called
1821  * if a priority for a network is changed.
1822  */
1823 int wpa_config_update_prio_list(struct wpa_config *config)
1824 {
1825         struct wpa_ssid *ssid;
1826         int ret = 0;
1827
1828         os_free(config->pssid);
1829         config->pssid = NULL;
1830         config->num_prio = 0;
1831
1832         ssid = config->ssid;
1833         while (ssid) {
1834                 ssid->pnext = NULL;
1835                 if (wpa_config_add_prio_network(config, ssid) < 0)
1836                         ret = -1;
1837                 ssid = ssid->next;
1838         }
1839
1840         return ret;
1841 }
1842
1843
1844 #ifdef IEEE8021X_EAPOL
1845 static void eap_peer_config_free(struct eap_peer_config *eap)
1846 {
1847         os_free(eap->eap_methods);
1848         os_free(eap->identity);
1849         os_free(eap->anonymous_identity);
1850         os_free(eap->password);
1851         os_free(eap->ca_cert);
1852         os_free(eap->ca_path);
1853         os_free(eap->client_cert);
1854         os_free(eap->private_key);
1855         os_free(eap->private_key_passwd);
1856         os_free(eap->dh_file);
1857         os_free(eap->subject_match);
1858         os_free(eap->altsubject_match);
1859         os_free(eap->domain_suffix_match);
1860         os_free(eap->ca_cert2);
1861         os_free(eap->ca_path2);
1862         os_free(eap->client_cert2);
1863         os_free(eap->private_key2);
1864         os_free(eap->private_key2_passwd);
1865         os_free(eap->dh_file2);
1866         os_free(eap->subject_match2);
1867         os_free(eap->altsubject_match2);
1868         os_free(eap->domain_suffix_match2);
1869         os_free(eap->phase1);
1870         os_free(eap->phase2);
1871         os_free(eap->pcsc);
1872         os_free(eap->pin);
1873         os_free(eap->engine_id);
1874         os_free(eap->key_id);
1875         os_free(eap->cert_id);
1876         os_free(eap->ca_cert_id);
1877         os_free(eap->key2_id);
1878         os_free(eap->cert2_id);
1879         os_free(eap->ca_cert2_id);
1880         os_free(eap->pin2);
1881         os_free(eap->engine2_id);
1882         os_free(eap->otp);
1883         os_free(eap->pending_req_otp);
1884         os_free(eap->pac_file);
1885         os_free(eap->new_password);
1886         os_free(eap->external_sim_resp);
1887 }
1888 #endif /* IEEE8021X_EAPOL */
1889
1890
1891 /**
1892  * wpa_config_free_ssid - Free network/ssid configuration data
1893  * @ssid: Configuration data for the network
1894  *
1895  * This function frees all resources allocated for the network configuration
1896  * data.
1897  */
1898 void wpa_config_free_ssid(struct wpa_ssid *ssid)
1899 {
1900         struct psk_list_entry *psk;
1901
1902         os_free(ssid->ssid);
1903         os_free(ssid->passphrase);
1904         os_free(ssid->ext_psk);
1905 #ifdef IEEE8021X_EAPOL
1906         eap_peer_config_free(&ssid->eap);
1907 #endif /* IEEE8021X_EAPOL */
1908         os_free(ssid->id_str);
1909         os_free(ssid->scan_freq);
1910         os_free(ssid->freq_list);
1911         os_free(ssid->bgscan);
1912         os_free(ssid->p2p_client_list);
1913 #ifdef CONFIG_HT_OVERRIDES
1914         os_free(ssid->ht_mcs);
1915 #endif /* CONFIG_HT_OVERRIDES */
1916         while ((psk = dl_list_first(&ssid->psk_list, struct psk_list_entry,
1917                                     list))) {
1918                 dl_list_del(&psk->list);
1919                 os_free(psk);
1920         }
1921         os_free(ssid);
1922 }
1923
1924
1925 void wpa_config_free_cred(struct wpa_cred *cred)
1926 {
1927         size_t i;
1928
1929         os_free(cred->realm);
1930         os_free(cred->username);
1931         os_free(cred->password);
1932         os_free(cred->ca_cert);
1933         os_free(cred->client_cert);
1934         os_free(cred->private_key);
1935         os_free(cred->private_key_passwd);
1936         os_free(cred->imsi);
1937         os_free(cred->milenage);
1938         for (i = 0; i < cred->num_domain; i++)
1939                 os_free(cred->domain[i]);
1940         os_free(cred->domain);
1941         os_free(cred->domain_suffix_match);
1942         os_free(cred->eap_method);
1943         os_free(cred->phase1);
1944         os_free(cred->phase2);
1945         os_free(cred->excluded_ssid);
1946         os_free(cred->roaming_partner);
1947         os_free(cred->provisioning_sp);
1948         for (i = 0; i < cred->num_req_conn_capab; i++)
1949                 os_free(cred->req_conn_capab_port[i]);
1950         os_free(cred->req_conn_capab_port);
1951         os_free(cred->req_conn_capab_proto);
1952         os_free(cred);
1953 }
1954
1955
1956 void wpa_config_flush_blobs(struct wpa_config *config)
1957 {
1958 #ifndef CONFIG_NO_CONFIG_BLOBS
1959         struct wpa_config_blob *blob, *prev;
1960
1961         blob = config->blobs;
1962         config->blobs = NULL;
1963         while (blob) {
1964                 prev = blob;
1965                 blob = blob->next;
1966                 wpa_config_free_blob(prev);
1967         }
1968 #endif /* CONFIG_NO_CONFIG_BLOBS */
1969 }
1970
1971
1972 /**
1973  * wpa_config_free - Free configuration data
1974  * @config: Configuration data from wpa_config_read()
1975  *
1976  * This function frees all resources allocated for the configuration data by
1977  * wpa_config_read().
1978  */
1979 void wpa_config_free(struct wpa_config *config)
1980 {
1981         struct wpa_ssid *ssid, *prev = NULL;
1982         struct wpa_cred *cred, *cprev;
1983
1984         ssid = config->ssid;
1985         while (ssid) {
1986                 prev = ssid;
1987                 ssid = ssid->next;
1988                 wpa_config_free_ssid(prev);
1989         }
1990
1991         cred = config->cred;
1992         while (cred) {
1993                 cprev = cred;
1994                 cred = cred->next;
1995                 wpa_config_free_cred(cprev);
1996         }
1997
1998         wpa_config_flush_blobs(config);
1999
2000         wpabuf_free(config->wps_vendor_ext_m1);
2001         os_free(config->ctrl_interface);
2002         os_free(config->ctrl_interface_group);
2003         os_free(config->opensc_engine_path);
2004         os_free(config->pkcs11_engine_path);
2005         os_free(config->pkcs11_module_path);
2006         os_free(config->pcsc_reader);
2007         os_free(config->pcsc_pin);
2008         os_free(config->driver_param);
2009         os_free(config->device_name);
2010         os_free(config->manufacturer);
2011         os_free(config->model_name);
2012         os_free(config->model_number);
2013         os_free(config->serial_number);
2014         os_free(config->config_methods);
2015         os_free(config->p2p_ssid_postfix);
2016         os_free(config->pssid);
2017         os_free(config->p2p_pref_chan);
2018         os_free(config->p2p_no_go_freq.range);
2019         os_free(config->autoscan);
2020         os_free(config->freq_list);
2021         wpabuf_free(config->wps_nfc_dh_pubkey);
2022         wpabuf_free(config->wps_nfc_dh_privkey);
2023         wpabuf_free(config->wps_nfc_dev_pw);
2024         os_free(config->ext_password_backend);
2025         os_free(config->sae_groups);
2026         wpabuf_free(config->ap_vendor_elements);
2027         os_free(config->osu_dir);
2028         os_free(config->wowlan_triggers);
2029         os_free(config);
2030 }
2031
2032
2033 /**
2034  * wpa_config_foreach_network - Iterate over each configured network
2035  * @config: Configuration data from wpa_config_read()
2036  * @func: Callback function to process each network
2037  * @arg: Opaque argument to pass to callback function
2038  *
2039  * Iterate over the set of configured networks calling the specified
2040  * function for each item. We guard against callbacks removing the
2041  * supplied network.
2042  */
2043 void wpa_config_foreach_network(struct wpa_config *config,
2044                                 void (*func)(void *, struct wpa_ssid *),
2045                                 void *arg)
2046 {
2047         struct wpa_ssid *ssid, *next;
2048
2049         ssid = config->ssid;
2050         while (ssid) {
2051                 next = ssid->next;
2052                 func(arg, ssid);
2053                 ssid = next;
2054         }
2055 }
2056
2057
2058 /**
2059  * wpa_config_get_network - Get configured network based on id
2060  * @config: Configuration data from wpa_config_read()
2061  * @id: Unique network id to search for
2062  * Returns: Network configuration or %NULL if not found
2063  */
2064 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
2065 {
2066         struct wpa_ssid *ssid;
2067
2068         ssid = config->ssid;
2069         while (ssid) {
2070                 if (id == ssid->id)
2071                         break;
2072                 ssid = ssid->next;
2073         }
2074
2075         return ssid;
2076 }
2077
2078
2079 /**
2080  * wpa_config_add_network - Add a new network with empty configuration
2081  * @config: Configuration data from wpa_config_read()
2082  * Returns: The new network configuration or %NULL if operation failed
2083  */
2084 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
2085 {
2086         int id;
2087         struct wpa_ssid *ssid, *last = NULL;
2088
2089         id = -1;
2090         ssid = config->ssid;
2091         while (ssid) {
2092                 if (ssid->id > id)
2093                         id = ssid->id;
2094                 last = ssid;
2095                 ssid = ssid->next;
2096         }
2097         id++;
2098
2099         ssid = os_zalloc(sizeof(*ssid));
2100         if (ssid == NULL)
2101                 return NULL;
2102         ssid->id = id;
2103         dl_list_init(&ssid->psk_list);
2104         if (last)
2105                 last->next = ssid;
2106         else
2107                 config->ssid = ssid;
2108
2109         wpa_config_update_prio_list(config);
2110
2111         return ssid;
2112 }
2113
2114
2115 /**
2116  * wpa_config_remove_network - Remove a configured network based on id
2117  * @config: Configuration data from wpa_config_read()
2118  * @id: Unique network id to search for
2119  * Returns: 0 on success, or -1 if the network was not found
2120  */
2121 int wpa_config_remove_network(struct wpa_config *config, int id)
2122 {
2123         struct wpa_ssid *ssid, *prev = NULL;
2124
2125         ssid = config->ssid;
2126         while (ssid) {
2127                 if (id == ssid->id)
2128                         break;
2129                 prev = ssid;
2130                 ssid = ssid->next;
2131         }
2132
2133         if (ssid == NULL)
2134                 return -1;
2135
2136         if (prev)
2137                 prev->next = ssid->next;
2138         else
2139                 config->ssid = ssid->next;
2140
2141         wpa_config_update_prio_list(config);
2142         wpa_config_free_ssid(ssid);
2143         return 0;
2144 }
2145
2146
2147 /**
2148  * wpa_config_set_network_defaults - Set network default values
2149  * @ssid: Pointer to network configuration data
2150  */
2151 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
2152 {
2153         ssid->proto = DEFAULT_PROTO;
2154         ssid->pairwise_cipher = DEFAULT_PAIRWISE;
2155         ssid->group_cipher = DEFAULT_GROUP;
2156         ssid->key_mgmt = DEFAULT_KEY_MGMT;
2157         ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
2158 #ifdef IEEE8021X_EAPOL
2159         ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
2160         ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
2161         ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
2162         ssid->eap.sim_num = DEFAULT_USER_SELECTED_SIM;
2163 #endif /* IEEE8021X_EAPOL */
2164 #ifdef CONFIG_HT_OVERRIDES
2165         ssid->disable_ht = DEFAULT_DISABLE_HT;
2166         ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
2167         ssid->disable_sgi = DEFAULT_DISABLE_SGI;
2168         ssid->disable_ldpc = DEFAULT_DISABLE_LDPC;
2169         ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
2170         ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
2171         ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
2172 #endif /* CONFIG_HT_OVERRIDES */
2173 #ifdef CONFIG_VHT_OVERRIDES
2174         ssid->vht_rx_mcs_nss_1 = -1;
2175         ssid->vht_rx_mcs_nss_2 = -1;
2176         ssid->vht_rx_mcs_nss_3 = -1;
2177         ssid->vht_rx_mcs_nss_4 = -1;
2178         ssid->vht_rx_mcs_nss_5 = -1;
2179         ssid->vht_rx_mcs_nss_6 = -1;
2180         ssid->vht_rx_mcs_nss_7 = -1;
2181         ssid->vht_rx_mcs_nss_8 = -1;
2182         ssid->vht_tx_mcs_nss_1 = -1;
2183         ssid->vht_tx_mcs_nss_2 = -1;
2184         ssid->vht_tx_mcs_nss_3 = -1;
2185         ssid->vht_tx_mcs_nss_4 = -1;
2186         ssid->vht_tx_mcs_nss_5 = -1;
2187         ssid->vht_tx_mcs_nss_6 = -1;
2188         ssid->vht_tx_mcs_nss_7 = -1;
2189         ssid->vht_tx_mcs_nss_8 = -1;
2190 #endif /* CONFIG_VHT_OVERRIDES */
2191         ssid->proactive_key_caching = -1;
2192 #ifdef CONFIG_IEEE80211W
2193         ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
2194 #endif /* CONFIG_IEEE80211W */
2195 }
2196
2197
2198 /**
2199  * wpa_config_set - Set a variable in network configuration
2200  * @ssid: Pointer to network configuration data
2201  * @var: Variable name, e.g., "ssid"
2202  * @value: Variable value
2203  * @line: Line number in configuration file or 0 if not used
2204  * Returns: 0 on success, -1 on failure
2205  *
2206  * This function can be used to set network configuration variables based on
2207  * both the configuration file and management interface input. The value
2208  * parameter must be in the same format as the text-based configuration file is
2209  * using. For example, strings are using double quotation marks.
2210  */
2211 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
2212                    int line)
2213 {
2214         size_t i;
2215         int ret = 0;
2216
2217         if (ssid == NULL || var == NULL || value == NULL)
2218                 return -1;
2219
2220         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2221                 const struct parse_data *field = &ssid_fields[i];
2222                 if (os_strcmp(var, field->name) != 0)
2223                         continue;
2224
2225                 if (field->parser(field, ssid, line, value)) {
2226                         if (line) {
2227                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
2228                                            "parse %s '%s'.", line, var, value);
2229                         }
2230                         ret = -1;
2231                 }
2232                 break;
2233         }
2234         if (i == NUM_SSID_FIELDS) {
2235                 if (line) {
2236                         wpa_printf(MSG_ERROR, "Line %d: unknown network field "
2237                                    "'%s'.", line, var);
2238                 }
2239                 ret = -1;
2240         }
2241
2242         return ret;
2243 }
2244
2245
2246 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
2247                           const char *value)
2248 {
2249         size_t len;
2250         char *buf;
2251         int ret;
2252
2253         len = os_strlen(value);
2254         buf = os_malloc(len + 3);
2255         if (buf == NULL)
2256                 return -1;
2257         buf[0] = '"';
2258         os_memcpy(buf + 1, value, len);
2259         buf[len + 1] = '"';
2260         buf[len + 2] = '\0';
2261         ret = wpa_config_set(ssid, var, buf, 0);
2262         os_free(buf);
2263         return ret;
2264 }
2265
2266
2267 /**
2268  * wpa_config_get_all - Get all options from network configuration
2269  * @ssid: Pointer to network configuration data
2270  * @get_keys: Determines if keys/passwords will be included in returned list
2271  *      (if they may be exported)
2272  * Returns: %NULL terminated list of all set keys and their values in the form
2273  * of [key1, val1, key2, val2, ... , NULL]
2274  *
2275  * This function can be used to get list of all configured network properties.
2276  * The caller is responsible for freeing the returned list and all its
2277  * elements.
2278  */
2279 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
2280 {
2281         const struct parse_data *field;
2282         char *key, *value;
2283         size_t i;
2284         char **props;
2285         int fields_num;
2286
2287         get_keys = get_keys && ssid->export_keys;
2288
2289         props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
2290         if (!props)
2291                 return NULL;
2292
2293         fields_num = 0;
2294         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2295                 field = &ssid_fields[i];
2296                 if (field->key_data && !get_keys)
2297                         continue;
2298                 value = field->writer(field, ssid);
2299                 if (value == NULL)
2300                         continue;
2301                 if (os_strlen(value) == 0) {
2302                         os_free(value);
2303                         continue;
2304                 }
2305
2306                 key = os_strdup(field->name);
2307                 if (key == NULL) {
2308                         os_free(value);
2309                         goto err;
2310                 }
2311
2312                 props[fields_num * 2] = key;
2313                 props[fields_num * 2 + 1] = value;
2314
2315                 fields_num++;
2316         }
2317
2318         return props;
2319
2320 err:
2321         value = *props;
2322         while (value)
2323                 os_free(value++);
2324         os_free(props);
2325         return NULL;
2326 }
2327
2328
2329 #ifndef NO_CONFIG_WRITE
2330 /**
2331  * wpa_config_get - Get a variable in network configuration
2332  * @ssid: Pointer to network configuration data
2333  * @var: Variable name, e.g., "ssid"
2334  * Returns: Value of the variable or %NULL on failure
2335  *
2336  * This function can be used to get network configuration variables. The
2337  * returned value is a copy of the configuration variable in text format, i.e,.
2338  * the same format that the text-based configuration file and wpa_config_set()
2339  * are using for the value. The caller is responsible for freeing the returned
2340  * value.
2341  */
2342 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
2343 {
2344         size_t i;
2345
2346         if (ssid == NULL || var == NULL)
2347                 return NULL;
2348
2349         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2350                 const struct parse_data *field = &ssid_fields[i];
2351                 if (os_strcmp(var, field->name) == 0)
2352                         return field->writer(field, ssid);
2353         }
2354
2355         return NULL;
2356 }
2357
2358
2359 /**
2360  * wpa_config_get_no_key - Get a variable in network configuration (no keys)
2361  * @ssid: Pointer to network configuration data
2362  * @var: Variable name, e.g., "ssid"
2363  * Returns: Value of the variable or %NULL on failure
2364  *
2365  * This function can be used to get network configuration variable like
2366  * wpa_config_get(). The only difference is that this functions does not expose
2367  * key/password material from the configuration. In case a key/password field
2368  * is requested, the returned value is an empty string or %NULL if the variable
2369  * is not set or "*" if the variable is set (regardless of its value). The
2370  * returned value is a copy of the configuration variable in text format, i.e,.
2371  * the same format that the text-based configuration file and wpa_config_set()
2372  * are using for the value. The caller is responsible for freeing the returned
2373  * value.
2374  */
2375 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
2376 {
2377         size_t i;
2378
2379         if (ssid == NULL || var == NULL)
2380                 return NULL;
2381
2382         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2383                 const struct parse_data *field = &ssid_fields[i];
2384                 if (os_strcmp(var, field->name) == 0) {
2385                         char *res = field->writer(field, ssid);
2386                         if (field->key_data) {
2387                                 if (res && res[0]) {
2388                                         wpa_printf(MSG_DEBUG, "Do not allow "
2389                                                    "key_data field to be "
2390                                                    "exposed");
2391                                         os_free(res);
2392                                         return os_strdup("*");
2393                                 }
2394
2395                                 os_free(res);
2396                                 return NULL;
2397                         }
2398                         return res;
2399                 }
2400         }
2401
2402         return NULL;
2403 }
2404 #endif /* NO_CONFIG_WRITE */
2405
2406
2407 /**
2408  * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
2409  * @ssid: Pointer to network configuration data
2410  *
2411  * This function must be called to update WPA PSK when either SSID or the
2412  * passphrase has changed for the network configuration.
2413  */
2414 void wpa_config_update_psk(struct wpa_ssid *ssid)
2415 {
2416 #ifndef CONFIG_NO_PBKDF2
2417         pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
2418                     ssid->psk, PMK_LEN);
2419         wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
2420                         ssid->psk, PMK_LEN);
2421         ssid->psk_set = 1;
2422 #endif /* CONFIG_NO_PBKDF2 */
2423 }
2424
2425
2426 static int wpa_config_set_cred_req_conn_capab(struct wpa_cred *cred,
2427                                               const char *value)
2428 {
2429         u8 *proto;
2430         int **port;
2431         int *ports, *nports;
2432         const char *pos;
2433         unsigned int num_ports;
2434
2435         proto = os_realloc_array(cred->req_conn_capab_proto,
2436                                  cred->num_req_conn_capab + 1, sizeof(u8));
2437         if (proto == NULL)
2438                 return -1;
2439         cred->req_conn_capab_proto = proto;
2440
2441         port = os_realloc_array(cred->req_conn_capab_port,
2442                                 cred->num_req_conn_capab + 1, sizeof(int *));
2443         if (port == NULL)
2444                 return -1;
2445         cred->req_conn_capab_port = port;
2446
2447         proto[cred->num_req_conn_capab] = atoi(value);
2448
2449         pos = os_strchr(value, ':');
2450         if (pos == NULL) {
2451                 port[cred->num_req_conn_capab] = NULL;
2452                 cred->num_req_conn_capab++;
2453                 return 0;
2454         }
2455         pos++;
2456
2457         ports = NULL;
2458         num_ports = 0;
2459
2460         while (*pos) {
2461                 nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
2462                 if (nports == NULL) {
2463                         os_free(ports);
2464                         return -1;
2465                 }
2466                 ports = nports;
2467                 ports[num_ports++] = atoi(pos);
2468
2469                 pos = os_strchr(pos, ',');
2470                 if (pos == NULL)
2471                         break;
2472                 pos++;
2473         }
2474
2475         nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
2476         if (nports == NULL) {
2477                 os_free(ports);
2478                 return -1;
2479         }
2480         ports = nports;
2481         ports[num_ports] = -1;
2482
2483         port[cred->num_req_conn_capab] = ports;
2484         cred->num_req_conn_capab++;
2485         return 0;
2486 }
2487
2488
2489 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
2490                         const char *value, int line)
2491 {
2492         char *val;
2493         size_t len;
2494
2495         if (os_strcmp(var, "temporary") == 0) {
2496                 cred->temporary = atoi(value);
2497                 return 0;
2498         }
2499
2500         if (os_strcmp(var, "priority") == 0) {
2501                 cred->priority = atoi(value);
2502                 return 0;
2503         }
2504
2505         if (os_strcmp(var, "sp_priority") == 0) {
2506                 int prio = atoi(value);
2507                 if (prio < 0 || prio > 255)
2508                         return -1;
2509                 cred->sp_priority = prio;
2510                 return 0;
2511         }
2512
2513         if (os_strcmp(var, "pcsc") == 0) {
2514                 cred->pcsc = atoi(value);
2515                 return 0;
2516         }
2517
2518         if (os_strcmp(var, "eap") == 0) {
2519                 struct eap_method_type method;
2520                 method.method = eap_peer_get_type(value, &method.vendor);
2521                 if (method.vendor == EAP_VENDOR_IETF &&
2522                     method.method == EAP_TYPE_NONE) {
2523                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
2524                                    "for a credential", line, value);
2525                         return -1;
2526                 }
2527                 os_free(cred->eap_method);
2528                 cred->eap_method = os_malloc(sizeof(*cred->eap_method));
2529                 if (cred->eap_method == NULL)
2530                         return -1;
2531                 os_memcpy(cred->eap_method, &method, sizeof(method));
2532                 return 0;
2533         }
2534
2535         if (os_strcmp(var, "password") == 0 &&
2536             os_strncmp(value, "ext:", 4) == 0) {
2537                 os_free(cred->password);
2538                 cred->password = os_strdup(value);
2539                 cred->ext_password = 1;
2540                 return 0;
2541         }
2542
2543         if (os_strcmp(var, "update_identifier") == 0) {
2544                 cred->update_identifier = atoi(value);
2545                 return 0;
2546         }
2547
2548         if (os_strcmp(var, "min_dl_bandwidth_home") == 0) {
2549                 cred->min_dl_bandwidth_home = atoi(value);
2550                 return 0;
2551         }
2552
2553         if (os_strcmp(var, "min_ul_bandwidth_home") == 0) {
2554                 cred->min_ul_bandwidth_home = atoi(value);
2555                 return 0;
2556         }
2557
2558         if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0) {
2559                 cred->min_dl_bandwidth_roaming = atoi(value);
2560                 return 0;
2561         }
2562
2563         if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0) {
2564                 cred->min_ul_bandwidth_roaming = atoi(value);
2565                 return 0;
2566         }
2567
2568         if (os_strcmp(var, "max_bss_load") == 0) {
2569                 cred->max_bss_load = atoi(value);
2570                 return 0;
2571         }
2572
2573         if (os_strcmp(var, "req_conn_capab") == 0)
2574                 return wpa_config_set_cred_req_conn_capab(cred, value);
2575
2576         if (os_strcmp(var, "ocsp") == 0) {
2577                 cred->ocsp = atoi(value);
2578                 return 0;
2579         }
2580
2581         if (os_strcmp(var, "sim_num") == 0) {
2582                 cred->sim_num = atoi(value);
2583                 return 0;
2584         }
2585
2586         val = wpa_config_parse_string(value, &len);
2587         if (val == NULL) {
2588                 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
2589                            "value '%s'.", line, var, value);
2590                 return -1;
2591         }
2592
2593         if (os_strcmp(var, "realm") == 0) {
2594                 os_free(cred->realm);
2595                 cred->realm = val;
2596                 return 0;
2597         }
2598
2599         if (os_strcmp(var, "username") == 0) {
2600                 os_free(cred->username);
2601                 cred->username = val;
2602                 return 0;
2603         }
2604
2605         if (os_strcmp(var, "password") == 0) {
2606                 os_free(cred->password);
2607                 cred->password = val;
2608                 cred->ext_password = 0;
2609                 return 0;
2610         }
2611
2612         if (os_strcmp(var, "ca_cert") == 0) {
2613                 os_free(cred->ca_cert);
2614                 cred->ca_cert = val;
2615                 return 0;
2616         }
2617
2618         if (os_strcmp(var, "client_cert") == 0) {
2619                 os_free(cred->client_cert);
2620                 cred->client_cert = val;
2621                 return 0;
2622         }
2623
2624         if (os_strcmp(var, "private_key") == 0) {
2625                 os_free(cred->private_key);
2626                 cred->private_key = val;
2627                 return 0;
2628         }
2629
2630         if (os_strcmp(var, "private_key_passwd") == 0) {
2631                 os_free(cred->private_key_passwd);
2632                 cred->private_key_passwd = val;
2633                 return 0;
2634         }
2635
2636         if (os_strcmp(var, "imsi") == 0) {
2637                 os_free(cred->imsi);
2638                 cred->imsi = val;
2639                 return 0;
2640         }
2641
2642         if (os_strcmp(var, "milenage") == 0) {
2643                 os_free(cred->milenage);
2644                 cred->milenage = val;
2645                 return 0;
2646         }
2647
2648         if (os_strcmp(var, "domain_suffix_match") == 0) {
2649                 os_free(cred->domain_suffix_match);
2650                 cred->domain_suffix_match = val;
2651                 return 0;
2652         }
2653
2654         if (os_strcmp(var, "domain") == 0) {
2655                 char **new_domain;
2656                 new_domain = os_realloc_array(cred->domain,
2657                                               cred->num_domain + 1,
2658                                               sizeof(char *));
2659                 if (new_domain == NULL) {
2660                         os_free(val);
2661                         return -1;
2662                 }
2663                 new_domain[cred->num_domain++] = val;
2664                 cred->domain = new_domain;
2665                 return 0;
2666         }
2667
2668         if (os_strcmp(var, "phase1") == 0) {
2669                 os_free(cred->phase1);
2670                 cred->phase1 = val;
2671                 return 0;
2672         }
2673
2674         if (os_strcmp(var, "phase2") == 0) {
2675                 os_free(cred->phase2);
2676                 cred->phase2 = val;
2677                 return 0;
2678         }
2679
2680         if (os_strcmp(var, "roaming_consortium") == 0) {
2681                 if (len < 3 || len > sizeof(cred->roaming_consortium)) {
2682                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2683                                    "roaming_consortium length %d (3..15 "
2684                                    "expected)", line, (int) len);
2685                         os_free(val);
2686                         return -1;
2687                 }
2688                 os_memcpy(cred->roaming_consortium, val, len);
2689                 cred->roaming_consortium_len = len;
2690                 os_free(val);
2691                 return 0;
2692         }
2693
2694         if (os_strcmp(var, "required_roaming_consortium") == 0) {
2695                 if (len < 3 || len > sizeof(cred->required_roaming_consortium))
2696                 {
2697                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2698                                    "required_roaming_consortium length %d "
2699                                    "(3..15 expected)", line, (int) len);
2700                         os_free(val);
2701                         return -1;
2702                 }
2703                 os_memcpy(cred->required_roaming_consortium, val, len);
2704                 cred->required_roaming_consortium_len = len;
2705                 os_free(val);
2706                 return 0;
2707         }
2708
2709         if (os_strcmp(var, "excluded_ssid") == 0) {
2710                 struct excluded_ssid *e;
2711
2712                 if (len > MAX_SSID_LEN) {
2713                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2714                                    "excluded_ssid length %d", line, (int) len);
2715                         os_free(val);
2716                         return -1;
2717                 }
2718
2719                 e = os_realloc_array(cred->excluded_ssid,
2720                                      cred->num_excluded_ssid + 1,
2721                                      sizeof(struct excluded_ssid));
2722                 if (e == NULL) {
2723                         os_free(val);
2724                         return -1;
2725                 }
2726                 cred->excluded_ssid = e;
2727
2728                 e = &cred->excluded_ssid[cred->num_excluded_ssid++];
2729                 os_memcpy(e->ssid, val, len);
2730                 e->ssid_len = len;
2731
2732                 os_free(val);
2733
2734                 return 0;
2735         }
2736
2737         if (os_strcmp(var, "roaming_partner") == 0) {
2738                 struct roaming_partner *p;
2739                 char *pos;
2740
2741                 p = os_realloc_array(cred->roaming_partner,
2742                                      cred->num_roaming_partner + 1,
2743                                      sizeof(struct roaming_partner));
2744                 if (p == NULL) {
2745                         os_free(val);
2746                         return -1;
2747                 }
2748                 cred->roaming_partner = p;
2749
2750                 p = &cred->roaming_partner[cred->num_roaming_partner];
2751
2752                 pos = os_strchr(val, ',');
2753                 if (pos == NULL) {
2754                         os_free(val);
2755                         return -1;
2756                 }
2757                 *pos++ = '\0';
2758                 if (pos - val - 1 >= (int) sizeof(p->fqdn)) {
2759                         os_free(val);
2760                         return -1;
2761                 }
2762                 os_memcpy(p->fqdn, val, pos - val);
2763
2764                 p->exact_match = atoi(pos);
2765
2766                 pos = os_strchr(pos, ',');
2767                 if (pos == NULL) {
2768                         os_free(val);
2769                         return -1;
2770                 }
2771                 *pos++ = '\0';
2772
2773                 p->priority = atoi(pos);
2774
2775                 pos = os_strchr(pos, ',');
2776                 if (pos == NULL) {
2777                         os_free(val);
2778                         return -1;
2779                 }
2780                 *pos++ = '\0';
2781
2782                 if (os_strlen(pos) >= sizeof(p->country)) {
2783                         os_free(val);
2784                         return -1;
2785                 }
2786                 os_memcpy(p->country, pos, os_strlen(pos) + 1);
2787
2788                 cred->num_roaming_partner++;
2789                 os_free(val);
2790
2791                 return 0;
2792         }
2793
2794         if (os_strcmp(var, "provisioning_sp") == 0) {
2795                 os_free(cred->provisioning_sp);
2796                 cred->provisioning_sp = val;
2797                 return 0;
2798         }
2799
2800         if (line) {
2801                 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
2802                            line, var);
2803         }
2804
2805         os_free(val);
2806
2807         return -1;
2808 }
2809
2810
2811 char * alloc_int_str(int val)
2812 {
2813         char *buf;
2814
2815         buf = os_malloc(20);
2816         if (buf == NULL)
2817                 return NULL;
2818         os_snprintf(buf, 20, "%d", val);
2819         return buf;
2820 }
2821
2822
2823 char * alloc_strdup(const char *str)
2824 {
2825         if (str == NULL)
2826                 return NULL;
2827         return os_strdup(str);
2828 }
2829
2830
2831 char * wpa_config_get_cred_no_key(struct wpa_cred *cred, const char *var)
2832 {
2833         if (os_strcmp(var, "temporary") == 0)
2834                 return alloc_int_str(cred->temporary);
2835
2836         if (os_strcmp(var, "priority") == 0)
2837                 return alloc_int_str(cred->priority);
2838
2839         if (os_strcmp(var, "sp_priority") == 0)
2840                 return alloc_int_str(cred->sp_priority);
2841
2842         if (os_strcmp(var, "pcsc") == 0)
2843                 return alloc_int_str(cred->pcsc);
2844
2845         if (os_strcmp(var, "eap") == 0) {
2846                 if (!cred->eap_method)
2847                         return NULL;
2848                 return alloc_strdup(eap_get_name(cred->eap_method[0].vendor,
2849                                                  cred->eap_method[0].method));
2850         }
2851
2852         if (os_strcmp(var, "update_identifier") == 0)
2853                 return alloc_int_str(cred->update_identifier);
2854
2855         if (os_strcmp(var, "min_dl_bandwidth_home") == 0)
2856                 return alloc_int_str(cred->min_dl_bandwidth_home);
2857
2858         if (os_strcmp(var, "min_ul_bandwidth_home") == 0)
2859                 return alloc_int_str(cred->min_ul_bandwidth_home);
2860
2861         if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0)
2862                 return alloc_int_str(cred->min_dl_bandwidth_roaming);
2863
2864         if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0)
2865                 return alloc_int_str(cred->min_ul_bandwidth_roaming);
2866
2867         if (os_strcmp(var, "max_bss_load") == 0)
2868                 return alloc_int_str(cred->max_bss_load);
2869
2870         if (os_strcmp(var, "req_conn_capab") == 0) {
2871                 unsigned int i;
2872                 char *buf, *end, *pos;
2873                 int ret;
2874
2875                 if (!cred->num_req_conn_capab)
2876                         return NULL;
2877
2878                 buf = os_malloc(4000);
2879                 if (buf == NULL)
2880                         return NULL;
2881                 pos = buf;
2882                 end = pos + 4000;
2883                 for (i = 0; i < cred->num_req_conn_capab; i++) {
2884                         int *ports;
2885
2886                         ret = os_snprintf(pos, end - pos, "%s%u",
2887                                           i > 0 ? "\n" : "",
2888                                           cred->req_conn_capab_proto[i]);
2889                         if (ret < 0 || ret >= end - pos)
2890                                 return buf;
2891                         pos += ret;
2892
2893                         ports = cred->req_conn_capab_port[i];
2894                         if (ports) {
2895                                 int j;
2896                                 for (j = 0; ports[j] != -1; j++) {
2897                                         ret = os_snprintf(pos, end - pos,
2898                                                           "%s%d",
2899                                                           j > 0 ? "," : ":",
2900                                                           ports[j]);
2901                                         if (ret < 0 || ret >= end - pos)
2902                                                 return buf;
2903                                         pos += ret;
2904                                 }
2905                         }
2906                 }
2907
2908                 return buf;
2909         }
2910
2911         if (os_strcmp(var, "ocsp") == 0)
2912                 return alloc_int_str(cred->ocsp);
2913
2914         if (os_strcmp(var, "realm") == 0)
2915                 return alloc_strdup(cred->realm);
2916
2917         if (os_strcmp(var, "username") == 0)
2918                 return alloc_strdup(cred->username);
2919
2920         if (os_strcmp(var, "password") == 0) {
2921                 if (!cred->password)
2922                         return NULL;
2923                 return alloc_strdup("*");
2924         }
2925
2926         if (os_strcmp(var, "ca_cert") == 0)
2927                 return alloc_strdup(cred->ca_cert);
2928
2929         if (os_strcmp(var, "client_cert") == 0)
2930                 return alloc_strdup(cred->client_cert);
2931
2932         if (os_strcmp(var, "private_key") == 0)
2933                 return alloc_strdup(cred->private_key);
2934
2935         if (os_strcmp(var, "private_key_passwd") == 0) {
2936                 if (!cred->private_key_passwd)
2937                         return NULL;
2938                 return alloc_strdup("*");
2939         }
2940
2941         if (os_strcmp(var, "imsi") == 0)
2942                 return alloc_strdup(cred->imsi);
2943
2944         if (os_strcmp(var, "milenage") == 0) {
2945                 if (!(cred->milenage))
2946                         return NULL;
2947                 return alloc_strdup("*");
2948         }
2949
2950         if (os_strcmp(var, "domain_suffix_match") == 0)
2951                 return alloc_strdup(cred->domain_suffix_match);
2952
2953         if (os_strcmp(var, "domain") == 0) {
2954                 unsigned int i;
2955                 char *buf, *end, *pos;
2956                 int ret;
2957
2958                 if (!cred->num_domain)
2959                         return NULL;
2960
2961                 buf = os_malloc(4000);
2962                 if (buf == NULL)
2963                         return NULL;
2964                 pos = buf;
2965                 end = pos + 4000;
2966
2967                 for (i = 0; i < cred->num_domain; i++) {
2968                         ret = os_snprintf(pos, end - pos, "%s%s",
2969                                           i > 0 ? "\n" : "", cred->domain[i]);
2970                         if (ret < 0 || ret >= end - pos)
2971                                 return buf;
2972                         pos += ret;
2973                 }
2974
2975                 return buf;
2976         }
2977
2978         if (os_strcmp(var, "phase1") == 0)
2979                 return alloc_strdup(cred->phase1);
2980
2981         if (os_strcmp(var, "phase2") == 0)
2982                 return alloc_strdup(cred->phase2);
2983
2984         if (os_strcmp(var, "roaming_consortium") == 0) {
2985                 size_t buflen;
2986                 char *buf;
2987
2988                 if (!cred->roaming_consortium_len)
2989                         return NULL;
2990                 buflen = cred->roaming_consortium_len * 2 + 1;
2991                 buf = os_malloc(buflen);
2992                 if (buf == NULL)
2993                         return NULL;
2994                 wpa_snprintf_hex(buf, buflen, cred->roaming_consortium,
2995                                  cred->roaming_consortium_len);
2996                 return buf;
2997         }
2998
2999         if (os_strcmp(var, "required_roaming_consortium") == 0) {
3000                 size_t buflen;
3001                 char *buf;
3002
3003                 if (!cred->required_roaming_consortium_len)
3004                         return NULL;
3005                 buflen = cred->required_roaming_consortium_len * 2 + 1;
3006                 buf = os_malloc(buflen);
3007                 if (buf == NULL)
3008                         return NULL;
3009                 wpa_snprintf_hex(buf, buflen, cred->required_roaming_consortium,
3010                                  cred->required_roaming_consortium_len);
3011                 return buf;
3012         }
3013
3014         if (os_strcmp(var, "excluded_ssid") == 0) {
3015                 unsigned int i;
3016                 char *buf, *end, *pos;
3017
3018                 if (!cred->num_excluded_ssid)
3019                         return NULL;
3020
3021                 buf = os_malloc(4000);
3022                 if (buf == NULL)
3023                         return NULL;
3024                 pos = buf;
3025                 end = pos + 4000;
3026
3027                 for (i = 0; i < cred->num_excluded_ssid; i++) {
3028                         struct excluded_ssid *e;
3029                         int ret;
3030
3031                         e = &cred->excluded_ssid[i];
3032                         ret = os_snprintf(pos, end - pos, "%s%s",
3033                                           i > 0 ? "\n" : "",
3034                                           wpa_ssid_txt(e->ssid, e->ssid_len));
3035                         if (ret < 0 || ret >= end - pos)
3036                                 return buf;
3037                         pos += ret;
3038                 }
3039
3040                 return buf;
3041         }
3042
3043         if (os_strcmp(var, "roaming_partner") == 0) {
3044                 unsigned int i;
3045                 char *buf, *end, *pos;
3046
3047                 if (!cred->num_roaming_partner)
3048                         return NULL;
3049
3050                 buf = os_malloc(4000);
3051                 if (buf == NULL)
3052                         return NULL;
3053                 pos = buf;
3054                 end = pos + 4000;
3055
3056                 for (i = 0; i < cred->num_roaming_partner; i++) {
3057                         struct roaming_partner *p;
3058                         int ret;
3059
3060                         p = &cred->roaming_partner[i];
3061                         ret = os_snprintf(pos, end - pos, "%s%s,%d,%u,%s",
3062                                           i > 0 ? "\n" : "",
3063                                           p->fqdn, p->exact_match, p->priority,
3064                                           p->country);
3065                         if (ret < 0 || ret >= end - pos)
3066                                 return buf;
3067                         pos += ret;
3068                 }
3069
3070                 return buf;
3071         }
3072
3073         if (os_strcmp(var, "provisioning_sp") == 0)
3074                 return alloc_strdup(cred->provisioning_sp);
3075
3076         return NULL;
3077 }
3078
3079
3080 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
3081 {
3082         struct wpa_cred *cred;
3083
3084         cred = config->cred;
3085         while (cred) {
3086                 if (id == cred->id)
3087                         break;
3088                 cred = cred->next;
3089         }
3090
3091         return cred;
3092 }
3093
3094
3095 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
3096 {
3097         int id;
3098         struct wpa_cred *cred, *last = NULL;
3099
3100         id = -1;
3101         cred = config->cred;
3102         while (cred) {
3103                 if (cred->id > id)
3104                         id = cred->id;
3105                 last = cred;
3106                 cred = cred->next;
3107         }
3108         id++;
3109
3110         cred = os_zalloc(sizeof(*cred));
3111         if (cred == NULL)
3112                 return NULL;
3113         cred->id = id;
3114         cred->sim_num = DEFAULT_USER_SELECTED_SIM;
3115         if (last)
3116                 last->next = cred;
3117         else
3118                 config->cred = cred;
3119
3120         return cred;
3121 }
3122
3123
3124 int wpa_config_remove_cred(struct wpa_config *config, int id)
3125 {
3126         struct wpa_cred *cred, *prev = NULL;
3127
3128         cred = config->cred;
3129         while (cred) {
3130                 if (id == cred->id)
3131                         break;
3132                 prev = cred;
3133                 cred = cred->next;
3134         }
3135
3136         if (cred == NULL)
3137                 return -1;
3138
3139         if (prev)
3140                 prev->next = cred->next;
3141         else
3142                 config->cred = cred->next;
3143
3144         wpa_config_free_cred(cred);
3145         return 0;
3146 }
3147
3148
3149 #ifndef CONFIG_NO_CONFIG_BLOBS
3150 /**
3151  * wpa_config_get_blob - Get a named configuration blob
3152  * @config: Configuration data from wpa_config_read()
3153  * @name: Name of the blob
3154  * Returns: Pointer to blob data or %NULL if not found
3155  */
3156 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
3157                                                    const char *name)
3158 {
3159         struct wpa_config_blob *blob = config->blobs;
3160
3161         while (blob) {
3162                 if (os_strcmp(blob->name, name) == 0)
3163                         return blob;
3164                 blob = blob->next;
3165         }
3166         return NULL;
3167 }
3168
3169
3170 /**
3171  * wpa_config_set_blob - Set or add a named configuration blob
3172  * @config: Configuration data from wpa_config_read()
3173  * @blob: New value for the blob
3174  *
3175  * Adds a new configuration blob or replaces the current value of an existing
3176  * blob.
3177  */
3178 void wpa_config_set_blob(struct wpa_config *config,
3179                          struct wpa_config_blob *blob)
3180 {
3181         wpa_config_remove_blob(config, blob->name);
3182         blob->next = config->blobs;
3183         config->blobs = blob;
3184 }
3185
3186
3187 /**
3188  * wpa_config_free_blob - Free blob data
3189  * @blob: Pointer to blob to be freed
3190  */
3191 void wpa_config_free_blob(struct wpa_config_blob *blob)
3192 {
3193         if (blob) {
3194                 os_free(blob->name);
3195                 os_free(blob->data);
3196                 os_free(blob);
3197         }
3198 }
3199
3200
3201 /**
3202  * wpa_config_remove_blob - Remove a named configuration blob
3203  * @config: Configuration data from wpa_config_read()
3204  * @name: Name of the blob to remove
3205  * Returns: 0 if blob was removed or -1 if blob was not found
3206  */
3207 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
3208 {
3209         struct wpa_config_blob *pos = config->blobs, *prev = NULL;
3210
3211         while (pos) {
3212                 if (os_strcmp(pos->name, name) == 0) {
3213                         if (prev)
3214                                 prev->next = pos->next;
3215                         else
3216                                 config->blobs = pos->next;
3217                         wpa_config_free_blob(pos);
3218                         return 0;
3219                 }
3220                 prev = pos;
3221                 pos = pos->next;
3222         }
3223
3224         return -1;
3225 }
3226 #endif /* CONFIG_NO_CONFIG_BLOBS */
3227
3228
3229 /**
3230  * wpa_config_alloc_empty - Allocate an empty configuration
3231  * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
3232  * socket
3233  * @driver_param: Driver parameters
3234  * Returns: Pointer to allocated configuration data or %NULL on failure
3235  */
3236 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
3237                                            const char *driver_param)
3238 {
3239         struct wpa_config *config;
3240         const int aCWmin = 4, aCWmax = 10;
3241         const struct hostapd_wmm_ac_params ac_bk =
3242                 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
3243         const struct hostapd_wmm_ac_params ac_be =
3244                 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
3245         const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
3246                 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
3247         const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
3248                 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
3249
3250         config = os_zalloc(sizeof(*config));
3251         if (config == NULL)
3252                 return NULL;
3253         config->eapol_version = DEFAULT_EAPOL_VERSION;
3254         config->ap_scan = DEFAULT_AP_SCAN;
3255         config->fast_reauth = DEFAULT_FAST_REAUTH;
3256         config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
3257         config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
3258         config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
3259         config->p2p_optimize_listen_chan = DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN;
3260         config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
3261         config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
3262         config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
3263         config->max_num_sta = DEFAULT_MAX_NUM_STA;
3264         config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
3265         config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
3266         config->wmm_ac_params[0] = ac_be;
3267         config->wmm_ac_params[1] = ac_bk;
3268         config->wmm_ac_params[2] = ac_vi;
3269         config->wmm_ac_params[3] = ac_vo;
3270         config->p2p_search_delay = DEFAULT_P2P_SEARCH_DELAY;
3271
3272         if (ctrl_interface)
3273                 config->ctrl_interface = os_strdup(ctrl_interface);
3274         if (driver_param)
3275                 config->driver_param = os_strdup(driver_param);
3276
3277         return config;
3278 }
3279
3280
3281 #ifndef CONFIG_NO_STDOUT_DEBUG
3282 /**
3283  * wpa_config_debug_dump_networks - Debug dump of configured networks
3284  * @config: Configuration data from wpa_config_read()
3285  */
3286 void wpa_config_debug_dump_networks(struct wpa_config *config)
3287 {
3288         int prio;
3289         struct wpa_ssid *ssid;
3290
3291         for (prio = 0; prio < config->num_prio; prio++) {
3292                 ssid = config->pssid[prio];
3293                 wpa_printf(MSG_DEBUG, "Priority group %d",
3294                            ssid->priority);
3295                 while (ssid) {
3296                         wpa_printf(MSG_DEBUG, "   id=%d ssid='%s'",
3297                                    ssid->id,
3298                                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3299                         ssid = ssid->pnext;
3300                 }
3301         }
3302 }
3303 #endif /* CONFIG_NO_STDOUT_DEBUG */
3304
3305
3306 struct global_parse_data {
3307         char *name;
3308         int (*parser)(const struct global_parse_data *data,
3309                       struct wpa_config *config, int line, const char *value);
3310         void *param1, *param2, *param3;
3311         unsigned int changed_flag;
3312 };
3313
3314
3315 static int wpa_global_config_parse_int(const struct global_parse_data *data,
3316                                        struct wpa_config *config, int line,
3317                                        const char *pos)
3318 {
3319         int val, *dst;
3320         char *end;
3321
3322         dst = (int *) (((u8 *) config) + (long) data->param1);
3323         val = strtol(pos, &end, 0);
3324         if (*end) {
3325                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
3326                            line, pos);
3327                 return -1;
3328         }
3329         *dst = val;
3330
3331         wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
3332
3333         if (data->param2 && *dst < (long) data->param2) {
3334                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
3335                            "min_value=%ld)", line, data->name, *dst,
3336                            (long) data->param2);
3337                 *dst = (long) data->param2;
3338                 return -1;
3339         }
3340
3341         if (data->param3 && *dst > (long) data->param3) {
3342                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
3343                            "max_value=%ld)", line, data->name, *dst,
3344                            (long) data->param3);
3345                 *dst = (long) data->param3;
3346                 return -1;
3347         }
3348
3349         return 0;
3350 }
3351
3352
3353 static int wpa_global_config_parse_str(const struct global_parse_data *data,
3354                                        struct wpa_config *config, int line,
3355                                        const char *pos)
3356 {
3357         size_t len;
3358         char **dst, *tmp;
3359
3360         len = os_strlen(pos);
3361         if (data->param2 && len < (size_t) data->param2) {
3362                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
3363                            "min_len=%ld)", line, data->name,
3364                            (unsigned long) len, (long) data->param2);
3365                 return -1;
3366         }
3367
3368         if (data->param3 && len > (size_t) data->param3) {
3369                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
3370                            "max_len=%ld)", line, data->name,
3371                            (unsigned long) len, (long) data->param3);
3372                 return -1;
3373         }
3374
3375         tmp = os_strdup(pos);
3376         if (tmp == NULL)
3377                 return -1;
3378
3379         dst = (char **) (((u8 *) config) + (long) data->param1);
3380         os_free(*dst);
3381         *dst = tmp;
3382         wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
3383
3384         return 0;
3385 }
3386
3387
3388 static int wpa_config_process_bgscan(const struct global_parse_data *data,
3389                                      struct wpa_config *config, int line,
3390                                      const char *pos)
3391 {
3392         size_t len;
3393         char *tmp;
3394         int res;
3395
3396         tmp = wpa_config_parse_string(pos, &len);
3397         if (tmp == NULL) {
3398                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s",
3399                            line, data->name);
3400                 return -1;
3401         }
3402
3403         res = wpa_global_config_parse_str(data, config, line, tmp);
3404         os_free(tmp);
3405         return res;
3406 }
3407
3408
3409 static int wpa_global_config_parse_bin(const struct global_parse_data *data,
3410                                        struct wpa_config *config, int line,
3411                                        const char *pos)
3412 {
3413         size_t len;
3414         struct wpabuf **dst, *tmp;
3415
3416         len = os_strlen(pos);
3417         if (len & 0x01)
3418                 return -1;
3419
3420         tmp = wpabuf_alloc(len / 2);
3421         if (tmp == NULL)
3422                 return -1;
3423
3424         if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) {
3425                 wpabuf_free(tmp);
3426                 return -1;
3427         }
3428
3429         dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
3430         wpabuf_free(*dst);
3431         *dst = tmp;
3432         wpa_printf(MSG_DEBUG, "%s", data->name);
3433
3434         return 0;
3435 }
3436
3437
3438 static int wpa_config_process_freq_list(const struct global_parse_data *data,
3439                                         struct wpa_config *config, int line,
3440                                         const char *value)
3441 {
3442         int *freqs;
3443
3444         freqs = wpa_config_parse_int_array(value);
3445         if (freqs == NULL)
3446                 return -1;
3447         if (freqs[0] == 0) {
3448                 os_free(freqs);
3449                 freqs = NULL;
3450         }
3451         os_free(config->freq_list);
3452         config->freq_list = freqs;
3453         return 0;
3454 }
3455
3456
3457 #ifdef CONFIG_P2P
3458 static int wpa_global_config_parse_ipv4(const struct global_parse_data *data,
3459                                         struct wpa_config *config, int line,
3460                                         const char *pos)
3461 {
3462         u32 *dst;
3463         struct hostapd_ip_addr addr;
3464
3465         if (hostapd_parse_ip_addr(pos, &addr) < 0)
3466                 return -1;
3467         if (addr.af != AF_INET)
3468                 return -1;
3469
3470         dst = (u32 *) (((u8 *) config) + (long) data->param1);
3471         os_memcpy(dst, &addr.u.v4.s_addr, 4);
3472         wpa_printf(MSG_DEBUG, "%s = 0x%x", data->name,
3473                    WPA_GET_BE32((u8 *) dst));
3474
3475         return 0;
3476 }
3477 #endif /* CONFIG_P2P */
3478
3479
3480 static int wpa_config_process_country(const struct global_parse_data *data,
3481                                       struct wpa_config *config, int line,
3482                                       const char *pos)
3483 {
3484         if (!pos[0] || !pos[1]) {
3485                 wpa_printf(MSG_DEBUG, "Invalid country set");
3486                 return -1;
3487         }
3488         config->country[0] = pos[0];
3489         config->country[1] = pos[1];
3490         wpa_printf(MSG_DEBUG, "country='%c%c'",
3491                    config->country[0], config->country[1]);
3492         return 0;
3493 }
3494
3495
3496 static int wpa_config_process_load_dynamic_eap(
3497         const struct global_parse_data *data, struct wpa_config *config,
3498         int line, const char *so)
3499 {
3500         int ret;
3501         wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
3502         ret = eap_peer_method_load(so);
3503         if (ret == -2) {
3504                 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
3505                            "reloading.");
3506         } else if (ret) {
3507                 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
3508                            "method '%s'.", line, so);
3509                 return -1;
3510         }
3511
3512         return 0;
3513 }
3514
3515
3516 #ifdef CONFIG_WPS
3517
3518 static int wpa_config_process_uuid(const struct global_parse_data *data,
3519                                    struct wpa_config *config, int line,
3520                                    const char *pos)
3521 {
3522         char buf[40];
3523         if (uuid_str2bin(pos, config->uuid)) {
3524                 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
3525                 return -1;
3526         }
3527         uuid_bin2str(config->uuid, buf, sizeof(buf));
3528         wpa_printf(MSG_DEBUG, "uuid=%s", buf);
3529         return 0;
3530 }
3531
3532
3533 static int wpa_config_process_device_type(
3534         const struct global_parse_data *data,
3535         struct wpa_config *config, int line, const char *pos)
3536 {
3537         return wps_dev_type_str2bin(pos, config->device_type);
3538 }
3539
3540
3541 static int wpa_config_process_os_version(const struct global_parse_data *data,
3542                                          struct wpa_config *config, int line,
3543                                          const char *pos)
3544 {
3545         if (hexstr2bin(pos, config->os_version, 4)) {
3546                 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
3547                 return -1;
3548         }
3549         wpa_printf(MSG_DEBUG, "os_version=%08x",
3550                    WPA_GET_BE32(config->os_version));
3551         return 0;
3552 }
3553
3554
3555 static int wpa_config_process_wps_vendor_ext_m1(
3556         const struct global_parse_data *data,
3557         struct wpa_config *config, int line, const char *pos)
3558 {
3559         struct wpabuf *tmp;
3560         int len = os_strlen(pos) / 2;
3561         u8 *p;
3562
3563         if (!len) {
3564                 wpa_printf(MSG_ERROR, "Line %d: "
3565                            "invalid wps_vendor_ext_m1", line);
3566                 return -1;
3567         }
3568
3569         tmp = wpabuf_alloc(len);
3570         if (tmp) {
3571                 p = wpabuf_put(tmp, len);
3572
3573                 if (hexstr2bin(pos, p, len)) {
3574                         wpa_printf(MSG_ERROR, "Line %d: "
3575                                    "invalid wps_vendor_ext_m1", line);
3576                         wpabuf_free(tmp);
3577                         return -1;
3578                 }
3579
3580                 wpabuf_free(config->wps_vendor_ext_m1);
3581                 config->wps_vendor_ext_m1 = tmp;
3582         } else {
3583                 wpa_printf(MSG_ERROR, "Can not allocate "
3584                            "memory for wps_vendor_ext_m1");
3585                 return -1;
3586         }
3587
3588         return 0;
3589 }
3590
3591 #endif /* CONFIG_WPS */
3592
3593 #ifdef CONFIG_P2P
3594 static int wpa_config_process_sec_device_type(
3595         const struct global_parse_data *data,
3596         struct wpa_config *config, int line, const char *pos)
3597 {
3598         int idx;
3599
3600         if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
3601                 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
3602                            "items", line);
3603                 return -1;
3604         }
3605
3606         idx = config->num_sec_device_types;
3607
3608         if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
3609                 return -1;
3610
3611         config->num_sec_device_types++;
3612         return 0;
3613 }
3614
3615
3616 static int wpa_config_process_p2p_pref_chan(
3617         const struct global_parse_data *data,
3618         struct wpa_config *config, int line, const char *pos)
3619 {
3620         struct p2p_channel *pref = NULL, *n;
3621         unsigned int num = 0;
3622         const char *pos2;
3623         u8 op_class, chan;
3624
3625         /* format: class:chan,class:chan,... */
3626
3627         while (*pos) {
3628                 op_class = atoi(pos);
3629                 pos2 = os_strchr(pos, ':');
3630                 if (pos2 == NULL)
3631                         goto fail;
3632                 pos2++;
3633                 chan = atoi(pos2);
3634
3635                 n = os_realloc_array(pref, num + 1,
3636                                      sizeof(struct p2p_channel));
3637                 if (n == NULL)
3638                         goto fail;
3639                 pref = n;
3640                 pref[num].op_class = op_class;
3641                 pref[num].chan = chan;
3642                 num++;
3643
3644                 pos = os_strchr(pos2, ',');
3645                 if (pos == NULL)
3646                         break;
3647                 pos++;
3648         }
3649
3650         os_free(config->p2p_pref_chan);
3651         config->p2p_pref_chan = pref;
3652         config->num_p2p_pref_chan = num;
3653         wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
3654                     (u8 *) config->p2p_pref_chan,
3655                     config->num_p2p_pref_chan * sizeof(struct p2p_channel));
3656
3657         return 0;
3658
3659 fail:
3660         os_free(pref);
3661         wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
3662         return -1;
3663 }
3664
3665
3666 static int wpa_config_process_p2p_no_go_freq(
3667         const struct global_parse_data *data,
3668         struct wpa_config *config, int line, const char *pos)
3669 {
3670         int ret;
3671
3672         ret = freq_range_list_parse(&config->p2p_no_go_freq, pos);
3673         if (ret < 0) {
3674                 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_no_go_freq", line);
3675                 return -1;
3676         }
3677
3678         wpa_printf(MSG_DEBUG, "P2P: p2p_no_go_freq with %u items",
3679                    config->p2p_no_go_freq.num);
3680
3681         return 0;
3682 }
3683
3684 #endif /* CONFIG_P2P */
3685
3686
3687 static int wpa_config_process_hessid(
3688         const struct global_parse_data *data,
3689         struct wpa_config *config, int line, const char *pos)
3690 {
3691         if (hwaddr_aton2(pos, config->hessid) < 0) {
3692                 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
3693                            line, pos);
3694                 return -1;
3695         }
3696
3697         return 0;
3698 }
3699
3700
3701 static int wpa_config_process_sae_groups(
3702         const struct global_parse_data *data,
3703         struct wpa_config *config, int line, const char *pos)
3704 {
3705         int *groups = wpa_config_parse_int_array(pos);
3706         if (groups == NULL) {
3707                 wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'",
3708                            line, pos);
3709                 return -1;
3710         }
3711
3712         os_free(config->sae_groups);
3713         config->sae_groups = groups;
3714
3715         return 0;
3716 }
3717
3718
3719 static int wpa_config_process_ap_vendor_elements(
3720         const struct global_parse_data *data,
3721         struct wpa_config *config, int line, const char *pos)
3722 {
3723         struct wpabuf *tmp;
3724         int len = os_strlen(pos) / 2;
3725         u8 *p;
3726
3727         if (!len) {
3728                 wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements",
3729                            line);
3730                 return -1;
3731         }
3732
3733         tmp = wpabuf_alloc(len);
3734         if (tmp) {
3735                 p = wpabuf_put(tmp, len);
3736
3737                 if (hexstr2bin(pos, p, len)) {
3738                         wpa_printf(MSG_ERROR, "Line %d: invalid "
3739                                    "ap_vendor_elements", line);
3740                         wpabuf_free(tmp);
3741                         return -1;
3742                 }
3743
3744                 wpabuf_free(config->ap_vendor_elements);
3745                 config->ap_vendor_elements = tmp;
3746         } else {
3747                 wpa_printf(MSG_ERROR, "Cannot allocate memory for "
3748                            "ap_vendor_elements");
3749                 return -1;
3750         }
3751
3752         return 0;
3753 }
3754
3755
3756 #ifdef CONFIG_CTRL_IFACE
3757 static int wpa_config_process_no_ctrl_interface(
3758         const struct global_parse_data *data,
3759         struct wpa_config *config, int line, const char *pos)
3760 {
3761         wpa_printf(MSG_DEBUG, "no_ctrl_interface -> ctrl_interface=NULL");
3762         os_free(config->ctrl_interface);
3763         config->ctrl_interface = NULL;
3764         return 0;
3765 }
3766 #endif /* CONFIG_CTRL_IFACE */
3767
3768
3769 #ifdef OFFSET
3770 #undef OFFSET
3771 #endif /* OFFSET */
3772 /* OFFSET: Get offset of a variable within the wpa_config structure */
3773 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
3774
3775 #define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL
3776 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL
3777 #define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f)
3778 #define INT(f) _INT(f), NULL, NULL
3779 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
3780 #define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f)
3781 #define STR(f) _STR(f), NULL, NULL
3782 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
3783 #define BIN(f) #f, wpa_global_config_parse_bin, OFFSET(f), NULL, NULL
3784 #define IPV4(f) #f, wpa_global_config_parse_ipv4, OFFSET(f), NULL, NULL
3785
3786 static const struct global_parse_data global_fields[] = {
3787 #ifdef CONFIG_CTRL_IFACE
3788         { STR(ctrl_interface), 0 },
3789         { FUNC_NO_VAR(no_ctrl_interface), 0 },
3790         { STR(ctrl_interface_group), 0 } /* deprecated */,
3791 #endif /* CONFIG_CTRL_IFACE */
3792 #ifdef CONFIG_MACSEC
3793         { INT_RANGE(eapol_version, 1, 3), 0 },
3794 #else /* CONFIG_MACSEC */
3795         { INT_RANGE(eapol_version, 1, 2), 0 },
3796 #endif /* CONFIG_MACSEC */
3797         { INT(ap_scan), 0 },
3798         { FUNC(bgscan), 0 },
3799         { INT(disable_scan_offload), 0 },
3800         { INT(fast_reauth), 0 },
3801         { STR(opensc_engine_path), 0 },
3802         { STR(pkcs11_engine_path), 0 },
3803         { STR(pkcs11_module_path), 0 },
3804         { STR(pcsc_reader), 0 },
3805         { STR(pcsc_pin), 0 },
3806         { INT(external_sim), 0 },
3807         { STR(driver_param), 0 },
3808         { INT(dot11RSNAConfigPMKLifetime), 0 },
3809         { INT(dot11RSNAConfigPMKReauthThreshold), 0 },
3810         { INT(dot11RSNAConfigSATimeout), 0 },
3811 #ifndef CONFIG_NO_CONFIG_WRITE
3812         { INT(update_config), 0 },
3813 #endif /* CONFIG_NO_CONFIG_WRITE */
3814         { FUNC_NO_VAR(load_dynamic_eap), 0 },
3815 #ifdef CONFIG_WPS
3816         { FUNC(uuid), CFG_CHANGED_UUID },
3817         { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME },
3818         { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
3819         { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
3820         { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
3821         { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
3822         { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
3823         { FUNC(os_version), CFG_CHANGED_OS_VERSION },
3824         { STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
3825         { INT_RANGE(wps_cred_processing, 0, 2), 0 },
3826         { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
3827 #endif /* CONFIG_WPS */
3828 #ifdef CONFIG_P2P
3829         { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
3830         { INT(p2p_listen_reg_class), 0 },
3831         { INT(p2p_listen_channel), 0 },
3832         { INT(p2p_oper_reg_class), CFG_CHANGED_P2P_OPER_CHANNEL },
3833         { INT(p2p_oper_channel), CFG_CHANGED_P2P_OPER_CHANNEL },
3834         { INT_RANGE(p2p_go_intent, 0, 15), 0 },
3835         { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
3836         { INT_RANGE(persistent_reconnect, 0, 1), 0 },
3837         { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
3838         { INT(p2p_group_idle), 0 },
3839         { INT_RANGE(p2p_passphrase_len, 8, 63),
3840           CFG_CHANGED_P2P_PASSPHRASE_LEN },
3841         { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
3842         { FUNC(p2p_no_go_freq), CFG_CHANGED_P2P_PREF_CHAN },
3843         { INT_RANGE(p2p_add_cli_chan, 0, 1), 0 },
3844         { INT_RANGE(p2p_optimize_listen_chan, 0, 1), 0 },
3845         { INT(p2p_go_ht40), 0 },
3846         { INT(p2p_go_vht), 0 },
3847         { INT(p2p_disabled), 0 },
3848         { INT(p2p_no_group_iface), 0 },
3849         { INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 },
3850         { IPV4(ip_addr_go), 0 },
3851         { IPV4(ip_addr_mask), 0 },
3852         { IPV4(ip_addr_start), 0 },
3853         { IPV4(ip_addr_end), 0 },
3854 #endif /* CONFIG_P2P */
3855         { FUNC(country), CFG_CHANGED_COUNTRY },
3856         { INT(bss_max_count), 0 },
3857         { INT(bss_expiration_age), 0 },
3858         { INT(bss_expiration_scan_count), 0 },
3859         { INT_RANGE(filter_ssids, 0, 1), 0 },
3860         { INT_RANGE(filter_rssi, -100, 0), 0 },
3861         { INT(max_num_sta), 0 },
3862         { INT_RANGE(disassoc_low_ack, 0, 1), 0 },
3863 #ifdef CONFIG_HS20
3864         { INT_RANGE(hs20, 0, 1), 0 },
3865 #endif /* CONFIG_HS20 */
3866         { INT_RANGE(interworking, 0, 1), 0 },
3867         { FUNC(hessid), 0 },
3868         { INT_RANGE(access_network_type, 0, 15), 0 },
3869         { INT_RANGE(pbc_in_m1, 0, 1), 0 },
3870         { STR(autoscan), 0 },
3871         { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff),
3872           CFG_CHANGED_NFC_PASSWORD_TOKEN },
3873         { BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3874         { BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3875         { BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3876         { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
3877         { INT(p2p_go_max_inactivity), 0 },
3878         { INT_RANGE(auto_interworking, 0, 1), 0 },
3879         { INT(okc), 0 },
3880         { INT(pmf), 0 },
3881         { FUNC(sae_groups), 0 },
3882         { INT(dtim_period), 0 },
3883         { INT(beacon_int), 0 },
3884         { FUNC(ap_vendor_elements), 0 },
3885         { INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
3886         { FUNC(freq_list), 0 },
3887         { INT(scan_cur_freq), 0 },
3888         { INT(sched_scan_interval), 0 },
3889         { INT(tdls_external_control), 0},
3890         { STR(osu_dir), 0 },
3891         { STR(wowlan_triggers), 0 },
3892         { INT(p2p_search_delay), 0},
3893 };
3894
3895 #undef FUNC
3896 #undef _INT
3897 #undef INT
3898 #undef INT_RANGE
3899 #undef _STR
3900 #undef STR
3901 #undef STR_RANGE
3902 #undef BIN
3903 #undef IPV4
3904 #define NUM_GLOBAL_FIELDS ARRAY_SIZE(global_fields)
3905
3906
3907 int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
3908 {
3909         size_t i;
3910         int ret = 0;
3911
3912         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
3913                 const struct global_parse_data *field = &global_fields[i];
3914                 size_t flen = os_strlen(field->name);
3915                 if (os_strncmp(pos, field->name, flen) != 0 ||
3916                     pos[flen] != '=')
3917                         continue;
3918
3919                 if (field->parser(field, config, line, pos + flen + 1)) {
3920                         wpa_printf(MSG_ERROR, "Line %d: failed to "
3921                                    "parse '%s'.", line, pos);
3922                         ret = -1;
3923                 }
3924                 if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN)
3925                         config->wps_nfc_pw_from_config = 1;
3926                 config->changed_parameters |= field->changed_flag;
3927                 break;
3928         }
3929         if (i == NUM_GLOBAL_FIELDS) {
3930 #ifdef CONFIG_AP
3931                 if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
3932                         char *tmp = os_strchr(pos, '=');
3933                         if (tmp == NULL) {
3934                                 if (line < 0)
3935                                         return -1;
3936                                 wpa_printf(MSG_ERROR, "Line %d: invalid line "
3937                                            "'%s'", line, pos);
3938                                 return -1;
3939                         }
3940                         *tmp++ = '\0';
3941                         if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
3942                                                   tmp)) {
3943                                 wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
3944                                            "AC item", line);
3945                                 return -1;
3946                         }
3947                 }
3948 #endif /* CONFIG_AP */
3949                 if (line < 0)
3950                         return -1;
3951                 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
3952                            line, pos);
3953                 ret = -1;
3954         }
3955
3956         return ret;
3957 }