wpa_supplicant/config.c

   1 /*
   2  * WPA Supplicant / Configuration parser and common functions
   3  * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "utils/uuid.h"
  13 #include "utils/ip_addr.h"
  14 #include "crypto/sha1.h"
  15 #include "rsn_supp/wpa.h"
  16 #include "eap_peer/eap.h"
  17 #include "p2p/p2p.h"
  18 #include "config.h"
  19
  20
  21 #if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
  22 #define NO_CONFIG_WRITE
  23 #endif
  24
  25 /*
  26  * Structure for network configuration parsing. This data is used to implement
  27  * a generic parser for each network block variable. The table of configuration
  28  * variables is defined below in this file (ssid_fields[]).
  29  */
  30 struct parse_data {
  31         /* Configuration variable name */
  32         char *name;
  33
  34         /* Parser function for this variable */
  35         int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
  36                       int line, const char *value);
  37
  38 #ifndef NO_CONFIG_WRITE
  39         /* Writer function (i.e., to get the variable in text format from
  40          * internal presentation). */
  41         char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
  42 #endif /* NO_CONFIG_WRITE */
  43
  44         /* Variable specific parameters for the parser. */
  45         void *param1, *param2, *param3, *param4;
  46
  47         /* 0 = this variable can be included in debug output and ctrl_iface
  48          * 1 = this variable contains key/private data and it must not be
  49          *     included in debug output unless explicitly requested. In
  50          *     addition, this variable will not be readable through the
  51          *     ctrl_iface.
  52          */
  53         int key_data;
  54 };
  55
  56
  57 static int wpa_config_parse_str(const struct parse_data *data,
  58                                 struct wpa_ssid *ssid,
  59                                 int line, const char *value)
  60 {
  61         size_t res_len, *dst_len;
  62         char **dst, *tmp;
  63
  64         if (os_strcmp(value, "NULL") == 0) {
  65                 wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
  66                            data->name);
  67                 tmp = NULL;
  68                 res_len = 0;
  69                 goto set;
  70         }
  71
  72         tmp = wpa_config_parse_string(value, &res_len);
  73         if (tmp == NULL) {
  74                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
  75                            line, data->name,
  76                            data->key_data ? "[KEY DATA REMOVED]" : value);
  77                 return -1;
  78         }
  79
  80         if (data->key_data) {
  81                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
  82                                       (u8 *) tmp, res_len);
  83         } else {
  84                 wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
  85                                   (u8 *) tmp, res_len);
  86         }
  87
  88         if (data->param3 && res_len < (size_t) data->param3) {
  89                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
  90                            "min_len=%ld)", line, data->name,
  91                            (unsigned long) res_len, (long) data->param3);
  92                 os_free(tmp);
  93                 return -1;
  94         }
  95
  96         if (data->param4 && res_len > (size_t) data->param4) {
  97                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
  98                            "max_len=%ld)", line, data->name,
  99                            (unsigned long) res_len, (long) data->param4);
 100                 os_free(tmp);
 101                 return -1;
 102         }
 103
 104 set:
 105         dst = (char **) (((u8 *) ssid) + (long) data->param1);
 106         dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
 107         os_free(*dst);
 108         *dst = tmp;
 109         if (data->param2)
 110                 *dst_len = res_len;
 111
 112         return 0;
 113 }
 114
 115
 116 #ifndef NO_CONFIG_WRITE
 117 static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
 118 {
 119         char *buf;
 120
 121         buf = os_malloc(len + 3);
 122         if (buf == NULL)
 123                 return NULL;
 124         buf[0] = '"';
 125         os_memcpy(buf + 1, value, len);
 126         buf[len + 1] = '"';
 127         buf[len + 2] = '\0';
 128
 129         return buf;
 130 }
 131
 132
 133 static char * wpa_config_write_string_hex(const u8 *value, size_t len)
 134 {
 135         char *buf;
 136
 137         buf = os_zalloc(2 * len + 1);
 138         if (buf == NULL)
 139                 return NULL;
 140         wpa_snprintf_hex(buf, 2 * len + 1, value, len);
 141
 142         return buf;
 143 }
 144
 145
 146 static char * wpa_config_write_string(const u8 *value, size_t len)
 147 {
 148         if (value == NULL)
 149                 return NULL;
 150
 151         if (is_hex(value, len))
 152                 return wpa_config_write_string_hex(value, len);
 153         else
 154                 return wpa_config_write_string_ascii(value, len);
 155 }
 156
 157
 158 static char * wpa_config_write_str(const struct parse_data *data,
 159                                    struct wpa_ssid *ssid)
 160 {
 161         size_t len;
 162         char **src;
 163
 164         src = (char **) (((u8 *) ssid) + (long) data->param1);
 165         if (*src == NULL)
 166                 return NULL;
 167
 168         if (data->param2)
 169                 len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
 170         else
 171                 len = os_strlen(*src);
 172
 173         return wpa_config_write_string((const u8 *) *src, len);
 174 }
 175 #endif /* NO_CONFIG_WRITE */
 176
 177
 178 static int wpa_config_parse_int(const struct parse_data *data,
 179                                 struct wpa_ssid *ssid,
 180                                 int line, const char *value)
 181 {
 182         int val, *dst;
 183         char *end;
 184
 185         dst = (int *) (((u8 *) ssid) + (long) data->param1);
 186         val = strtol(value, &end, 0);
 187         if (*end) {
 188                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
 189                            line, value);
 190                 return -1;
 191         }
 192         *dst = val;
 193         wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
 194
 195         if (data->param3 && *dst < (long) data->param3) {
 196                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
 197                            "min_value=%ld)", line, data->name, *dst,
 198                            (long) data->param3);
 199                 *dst = (long) data->param3;
 200                 return -1;
 201         }
 202
 203         if (data->param4 && *dst > (long) data->param4) {
 204                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
 205                            "max_value=%ld)", line, data->name, *dst,
 206                            (long) data->param4);
 207                 *dst = (long) data->param4;
 208                 return -1;
 209         }
 210
 211         return 0;
 212 }
 213
 214
 215 #ifndef NO_CONFIG_WRITE
 216 static char * wpa_config_write_int(const struct parse_data *data,
 217                                    struct wpa_ssid *ssid)
 218 {
 219         int *src, res;
 220         char *value;
 221
 222         src = (int *) (((u8 *) ssid) + (long) data->param1);
 223
 224         value = os_malloc(20);
 225         if (value == NULL)
 226                 return NULL;
 227         res = os_snprintf(value, 20, "%d", *src);
 228         if (res < 0 || res >= 20) {
 229                 os_free(value);
 230                 return NULL;
 231         }
 232         value[20 - 1] = '\0';
 233         return value;
 234 }
 235 #endif /* NO_CONFIG_WRITE */
 236
 237
 238 static int wpa_config_parse_bssid(const struct parse_data *data,
 239                                   struct wpa_ssid *ssid, int line,
 240                                   const char *value)
 241 {
 242         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
 243             os_strcmp(value, "any") == 0) {
 244                 ssid->bssid_set = 0;
 245                 wpa_printf(MSG_MSGDUMP, "BSSID any");
 246                 return 0;
 247         }
 248         if (hwaddr_aton(value, ssid->bssid)) {
 249                 wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
 250                            line, value);
 251                 return -1;
 252         }
 253         ssid->bssid_set = 1;
 254         wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
 255         return 0;
 256 }
 257
 258
 259 #ifndef NO_CONFIG_WRITE
 260 static char * wpa_config_write_bssid(const struct parse_data *data,
 261                                      struct wpa_ssid *ssid)
 262 {
 263         char *value;
 264         int res;
 265
 266         if (!ssid->bssid_set)
 267                 return NULL;
 268
 269         value = os_malloc(20);
 270         if (value == NULL)
 271                 return NULL;
 272         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
 273         if (res < 0 || res >= 20) {
 274                 os_free(value);
 275                 return NULL;
 276         }
 277         value[20 - 1] = '\0';
 278         return value;
 279 }
 280 #endif /* NO_CONFIG_WRITE */
 281
 282
 283 static int wpa_config_parse_psk(const struct parse_data *data,
 284                                 struct wpa_ssid *ssid, int line,
 285                                 const char *value)
 286 {
 287 #ifdef CONFIG_EXT_PASSWORD
 288         if (os_strncmp(value, "ext:", 4) == 0) {
 289                 str_clear_free(ssid->passphrase);
 290                 ssid->passphrase = NULL;
 291                 ssid->psk_set = 0;
 292                 os_free(ssid->ext_psk);
 293                 ssid->ext_psk = os_strdup(value + 4);
 294                 if (ssid->ext_psk == NULL)
 295                         return -1;
 296                 wpa_printf(MSG_DEBUG, "PSK: External password '%s'",
 297                            ssid->ext_psk);
 298                 return 0;
 299         }
 300 #endif /* CONFIG_EXT_PASSWORD */
 301
 302         if (*value == '"') {
 303 #ifndef CONFIG_NO_PBKDF2
 304                 const char *pos;
 305                 size_t len;
 306
 307                 value++;
 308                 pos = os_strrchr(value, '"');
 309                 if (pos)
 310                         len = pos - value;
 311                 else
 312                         len = os_strlen(value);
 313                 if (len < 8 || len > 63) {
 314                         wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
 315                                    "length %lu (expected: 8..63) '%s'.",
 316                                    line, (unsigned long) len, value);
 317                         return -1;
 318                 }
 319                 wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
 320                                       (u8 *) value, len);
 321                 if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
 322                     os_memcmp(ssid->passphrase, value, len) == 0)
 323                         return 0;
 324                 ssid->psk_set = 0;
 325                 str_clear_free(ssid->passphrase);
 326                 ssid->passphrase = dup_binstr(value, len);
 327                 if (ssid->passphrase == NULL)
 328                         return -1;
 329                 return 0;
 330 #else /* CONFIG_NO_PBKDF2 */
 331                 wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
 332                            "supported.", line);
 333                 return -1;
 334 #endif /* CONFIG_NO_PBKDF2 */
 335         }
 336
 337         if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
 338             value[PMK_LEN * 2] != '\0') {
 339                 wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
 340                            line, value);
 341                 return -1;
 342         }
 343
 344         str_clear_free(ssid->passphrase);
 345         ssid->passphrase = NULL;
 346
 347         ssid->psk_set = 1;
 348         wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
 349         return 0;
 350 }
 351
 352
 353 #ifndef NO_CONFIG_WRITE
 354 static char * wpa_config_write_psk(const struct parse_data *data,
 355                                    struct wpa_ssid *ssid)
 356 {
 357 #ifdef CONFIG_EXT_PASSWORD
 358         if (ssid->ext_psk) {
 359                 size_t len = 4 + os_strlen(ssid->ext_psk) + 1;
 360                 char *buf = os_malloc(len);
 361                 if (buf == NULL)
 362                         return NULL;
 363                 os_snprintf(buf, len, "ext:%s", ssid->ext_psk);
 364                 return buf;
 365         }
 366 #endif /* CONFIG_EXT_PASSWORD */
 367
 368         if (ssid->passphrase)
 369                 return wpa_config_write_string_ascii(
 370                         (const u8 *) ssid->passphrase,
 371                         os_strlen(ssid->passphrase));
 372
 373         if (ssid->psk_set)
 374                 return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
 375
 376         return NULL;
 377 }
 378 #endif /* NO_CONFIG_WRITE */
 379
 380
 381 static int wpa_config_parse_proto(const struct parse_data *data,
 382                                   struct wpa_ssid *ssid, int line,
 383                                   const char *value)
 384 {
 385         int val = 0, last, errors = 0;
 386         char *start, *end, *buf;
 387
 388         buf = os_strdup(value);
 389         if (buf == NULL)
 390                 return -1;
 391         start = buf;
 392
 393         while (*start != '\0') {
 394                 while (*start == ' ' || *start == '\t')
 395                         start++;
 396                 if (*start == '\0')
 397                         break;
 398                 end = start;
 399                 while (*end != ' ' && *end != '\t' && *end != '\0')
 400                         end++;
 401                 last = *end == '\0';
 402                 *end = '\0';
 403                 if (os_strcmp(start, "WPA") == 0)
 404                         val |= WPA_PROTO_WPA;
 405                 else if (os_strcmp(start, "RSN") == 0 ||
 406                          os_strcmp(start, "WPA2") == 0)
 407                         val |= WPA_PROTO_RSN;
 408                 else if (os_strcmp(start, "OSEN") == 0)
 409                         val |= WPA_PROTO_OSEN;
 410                 else {
 411                         wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
 412                                    line, start);
 413                         errors++;
 414                 }
 415
 416                 if (last)
 417                         break;
 418                 start = end + 1;
 419         }
 420         os_free(buf);
 421
 422         if (val == 0) {
 423                 wpa_printf(MSG_ERROR,
 424                            "Line %d: no proto values configured.", line);
 425                 errors++;
 426         }
 427
 428         wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
 429         ssid->proto = val;
 430         return errors ? -1 : 0;
 431 }
 432
 433
 434 #ifndef NO_CONFIG_WRITE
 435 static char * wpa_config_write_proto(const struct parse_data *data,
 436                                      struct wpa_ssid *ssid)
 437 {
 438         int ret;
 439         char *buf, *pos, *end;
 440
 441         pos = buf = os_zalloc(20);
 442         if (buf == NULL)
 443                 return NULL;
 444         end = buf + 20;
 445
 446         if (ssid->proto & WPA_PROTO_WPA) {
 447                 ret = os_snprintf(pos, end - pos, "%sWPA",
 448                                   pos == buf ? "" : " ");
 449                 if (ret < 0 || ret >= end - pos)
 450                         return buf;
 451                 pos += ret;
 452         }
 453
 454         if (ssid->proto & WPA_PROTO_RSN) {
 455                 ret = os_snprintf(pos, end - pos, "%sRSN",
 456                                   pos == buf ? "" : " ");
 457                 if (ret < 0 || ret >= end - pos)
 458                         return buf;
 459                 pos += ret;
 460         }
 461
 462         if (ssid->proto & WPA_PROTO_OSEN) {
 463                 ret = os_snprintf(pos, end - pos, "%sOSEN",
 464                                   pos == buf ? "" : " ");
 465                 if (ret < 0 || ret >= end - pos)
 466                         return buf;
 467                 pos += ret;
 468         }
 469
 470         if (pos == buf) {
 471                 os_free(buf);
 472                 buf = NULL;
 473         }
 474
 475         return buf;
 476 }
 477 #endif /* NO_CONFIG_WRITE */
 478
 479
 480 static int wpa_config_parse_key_mgmt(const struct parse_data *data,
 481                                      struct wpa_ssid *ssid, int line,
 482                                      const char *value)
 483 {
 484         int val = 0, last, errors = 0;
 485         char *start, *end, *buf;
 486
 487         buf = os_strdup(value);
 488         if (buf == NULL)
 489                 return -1;
 490         start = buf;
 491
 492         while (*start != '\0') {
 493                 while (*start == ' ' || *start == '\t')
 494                         start++;
 495                 if (*start == '\0')
 496                         break;
 497                 end = start;
 498                 while (*end != ' ' && *end != '\t' && *end != '\0')
 499                         end++;
 500                 last = *end == '\0';
 501                 *end = '\0';
 502                 if (os_strcmp(start, "WPA-PSK") == 0)
 503                         val |= WPA_KEY_MGMT_PSK;
 504                 else if (os_strcmp(start, "WPA-EAP") == 0)
 505                         val |= WPA_KEY_MGMT_IEEE8021X;
 506                 else if (os_strcmp(start, "IEEE8021X") == 0)
 507                         val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
 508                 else if (os_strcmp(start, "NONE") == 0)
 509                         val |= WPA_KEY_MGMT_NONE;
 510                 else if (os_strcmp(start, "WPA-NONE") == 0)
 511                         val |= WPA_KEY_MGMT_WPA_NONE;
 512 #ifdef CONFIG_IEEE80211R
 513                 else if (os_strcmp(start, "FT-PSK") == 0)
 514                         val |= WPA_KEY_MGMT_FT_PSK;
 515                 else if (os_strcmp(start, "FT-EAP") == 0)
 516                         val |= WPA_KEY_MGMT_FT_IEEE8021X;
 517 #endif /* CONFIG_IEEE80211R */
 518 #ifdef CONFIG_IEEE80211W
 519                 else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
 520                         val |= WPA_KEY_MGMT_PSK_SHA256;
 521                 else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
 522                         val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
 523 #endif /* CONFIG_IEEE80211W */
 524 #ifdef CONFIG_WPS
 525                 else if (os_strcmp(start, "WPS") == 0)
 526                         val |= WPA_KEY_MGMT_WPS;
 527 #endif /* CONFIG_WPS */
 528 #ifdef CONFIG_SAE
 529                 else if (os_strcmp(start, "SAE") == 0)
 530                         val |= WPA_KEY_MGMT_SAE;
 531                 else if (os_strcmp(start, "FT-SAE") == 0)
 532                         val |= WPA_KEY_MGMT_FT_SAE;
 533 #endif /* CONFIG_SAE */
 534 #ifdef CONFIG_HS20
 535                 else if (os_strcmp(start, "OSEN") == 0)
 536                         val |= WPA_KEY_MGMT_OSEN;
 537 #endif /* CONFIG_HS20 */
 538                 else {
 539                         wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
 540                                    line, start);
 541                         errors++;
 542                 }
 543
 544                 if (last)
 545                         break;
 546                 start = end + 1;
 547         }
 548         os_free(buf);
 549
 550         if (val == 0) {
 551                 wpa_printf(MSG_ERROR,
 552                            "Line %d: no key_mgmt values configured.", line);
 553                 errors++;
 554         }
 555
 556         wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
 557         ssid->key_mgmt = val;
 558         return errors ? -1 : 0;
 559 }
 560
 561
 562 #ifndef NO_CONFIG_WRITE
 563 static char * wpa_config_write_key_mgmt(const struct parse_data *data,
 564                                         struct wpa_ssid *ssid)
 565 {
 566         char *buf, *pos, *end;
 567         int ret;
 568
 569         pos = buf = os_zalloc(100);
 570         if (buf == NULL)
 571                 return NULL;
 572         end = buf + 100;
 573
 574         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
 575                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
 576                                   pos == buf ? "" : " ");
 577                 if (ret < 0 || ret >= end - pos) {
 578                         end[-1] = '\0';
 579                         return buf;
 580                 }
 581                 pos += ret;
 582         }
 583
 584         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
 585                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
 586                                   pos == buf ? "" : " ");
 587                 if (ret < 0 || ret >= end - pos) {
 588                         end[-1] = '\0';
 589                         return buf;
 590                 }
 591                 pos += ret;
 592         }
 593
 594         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 595                 ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
 596                                   pos == buf ? "" : " ");
 597                 if (ret < 0 || ret >= end - pos) {
 598                         end[-1] = '\0';
 599                         return buf;
 600                 }
 601                 pos += ret;
 602         }
 603
 604         if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
 605                 ret = os_snprintf(pos, end - pos, "%sNONE",
 606                                   pos == buf ? "" : " ");
 607                 if (ret < 0 || ret >= end - pos) {
 608                         end[-1] = '\0';
 609                         return buf;
 610                 }
 611                 pos += ret;
 612         }
 613
 614         if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
 615                 ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
 616                                   pos == buf ? "" : " ");
 617                 if (ret < 0 || ret >= end - pos) {
 618                         end[-1] = '\0';
 619                         return buf;
 620                 }
 621                 pos += ret;
 622         }
 623
 624 #ifdef CONFIG_IEEE80211R
 625         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) {
 626                 ret = os_snprintf(pos, end - pos, "%sFT-PSK",
 627                                   pos == buf ? "" : " ");
 628                 if (ret < 0 || ret >= end - pos) {
 629                         end[-1] = '\0';
 630                         return buf;
 631                 }
 632                 pos += ret;
 633         }
 634
 635         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
 636                 ret = os_snprintf(pos, end - pos, "%sFT-EAP",
 637                                   pos == buf ? "" : " ");
 638                 if (ret < 0 || ret >= end - pos) {
 639                         end[-1] = '\0';
 640                         return buf;
 641                 }
 642                 pos += ret;
 643         }
 644 #endif /* CONFIG_IEEE80211R */
 645
 646 #ifdef CONFIG_IEEE80211W
 647         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
 648                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
 649                                   pos == buf ? "" : " ");
 650                 if (ret < 0 || ret >= end - pos) {
 651                         end[-1] = '\0';
 652                         return buf;
 653                 }
 654                 pos += ret;
 655         }
 656
 657         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 658                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
 659                                   pos == buf ? "" : " ");
 660                 if (ret < 0 || ret >= end - pos) {
 661                         end[-1] = '\0';
 662                         return buf;
 663                 }
 664                 pos += ret;
 665         }
 666 #endif /* CONFIG_IEEE80211W */
 667
 668 #ifdef CONFIG_WPS
 669         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 670                 ret = os_snprintf(pos, end - pos, "%sWPS",
 671                                   pos == buf ? "" : " ");
 672                 if (ret < 0 || ret >= end - pos) {
 673                         end[-1] = '\0';
 674                         return buf;
 675                 }
 676                 pos += ret;
 677         }
 678 #endif /* CONFIG_WPS */
 679
 680         if (pos == buf) {
 681                 os_free(buf);
 682                 buf = NULL;
 683         }
 684
 685         return buf;
 686 }
 687 #endif /* NO_CONFIG_WRITE */
 688
 689
 690 static int wpa_config_parse_cipher(int line, const char *value)
 691 {
 692         int val = wpa_parse_cipher(value);
 693         if (val < 0) {
 694                 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
 695                            line, value);
 696                 return -1;
 697         }
 698         if (val == 0) {
 699                 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
 700                            line);
 701                 return -1;
 702         }
 703         return val;
 704 }
 705
 706
 707 #ifndef NO_CONFIG_WRITE
 708 static char * wpa_config_write_cipher(int cipher)
 709 {
 710         char *buf = os_zalloc(50);
 711         if (buf == NULL)
 712                 return NULL;
 713
 714         if (wpa_write_ciphers(buf, buf + 50, cipher, " ") < 0) {
 715                 os_free(buf);
 716                 return NULL;
 717         }
 718
 719         return buf;
 720 }
 721 #endif /* NO_CONFIG_WRITE */
 722
 723
 724 static int wpa_config_parse_pairwise(const struct parse_data *data,
 725                                      struct wpa_ssid *ssid, int line,
 726                                      const char *value)
 727 {
 728         int val;
 729         val = wpa_config_parse_cipher(line, value);
 730         if (val == -1)
 731                 return -1;
 732         if (val & ~WPA_ALLOWED_PAIRWISE_CIPHERS) {
 733                 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
 734                            "(0x%x).", line, val);
 735                 return -1;
 736         }
 737
 738         wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
 739         ssid->pairwise_cipher = val;
 740         return 0;
 741 }
 742
 743
 744 #ifndef NO_CONFIG_WRITE
 745 static char * wpa_config_write_pairwise(const struct parse_data *data,
 746                                         struct wpa_ssid *ssid)
 747 {
 748         return wpa_config_write_cipher(ssid->pairwise_cipher);
 749 }
 750 #endif /* NO_CONFIG_WRITE */
 751
 752
 753 static int wpa_config_parse_group(const struct parse_data *data,
 754                                   struct wpa_ssid *ssid, int line,
 755                                   const char *value)
 756 {
 757         int val;
 758         val = wpa_config_parse_cipher(line, value);
 759         if (val == -1)
 760                 return -1;
 761         if (val & ~WPA_ALLOWED_GROUP_CIPHERS) {
 762                 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
 763                            "(0x%x).", line, val);
 764                 return -1;
 765         }
 766
 767         wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
 768         ssid->group_cipher = val;
 769         return 0;
 770 }
 771
 772
 773 #ifndef NO_CONFIG_WRITE
 774 static char * wpa_config_write_group(const struct parse_data *data,
 775                                      struct wpa_ssid *ssid)
 776 {
 777         return wpa_config_write_cipher(ssid->group_cipher);
 778 }
 779 #endif /* NO_CONFIG_WRITE */
 780
 781
 782 static int wpa_config_parse_auth_alg(const struct parse_data *data,
 783                                      struct wpa_ssid *ssid, int line,
 784                                      const char *value)
 785 {
 786         int val = 0, last, errors = 0;
 787         char *start, *end, *buf;
 788
 789         buf = os_strdup(value);
 790         if (buf == NULL)
 791                 return -1;
 792         start = buf;
 793
 794         while (*start != '\0') {
 795                 while (*start == ' ' || *start == '\t')
 796                         start++;
 797                 if (*start == '\0')
 798                         break;
 799                 end = start;
 800                 while (*end != ' ' && *end != '\t' && *end != '\0')
 801                         end++;
 802                 last = *end == '\0';
 803                 *end = '\0';
 804                 if (os_strcmp(start, "OPEN") == 0)
 805                         val |= WPA_AUTH_ALG_OPEN;
 806                 else if (os_strcmp(start, "SHARED") == 0)
 807                         val |= WPA_AUTH_ALG_SHARED;
 808                 else if (os_strcmp(start, "LEAP") == 0)
 809                         val |= WPA_AUTH_ALG_LEAP;
 810                 else {
 811                         wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
 812                                    line, start);
 813                         errors++;
 814                 }
 815
 816                 if (last)
 817                         break;
 818                 start = end + 1;
 819         }
 820         os_free(buf);
 821
 822         if (val == 0) {
 823                 wpa_printf(MSG_ERROR,
 824                            "Line %d: no auth_alg values configured.", line);
 825                 errors++;
 826         }
 827
 828         wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
 829         ssid->auth_alg = val;
 830         return errors ? -1 : 0;
 831 }
 832
 833
 834 #ifndef NO_CONFIG_WRITE
 835 static char * wpa_config_write_auth_alg(const struct parse_data *data,
 836                                         struct wpa_ssid *ssid)
 837 {
 838         char *buf, *pos, *end;
 839         int ret;
 840
 841         pos = buf = os_zalloc(30);
 842         if (buf == NULL)
 843                 return NULL;
 844         end = buf + 30;
 845
 846         if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
 847                 ret = os_snprintf(pos, end - pos, "%sOPEN",
 848                                   pos == buf ? "" : " ");
 849                 if (ret < 0 || ret >= end - pos) {
 850                         end[-1] = '\0';
 851                         return buf;
 852                 }
 853                 pos += ret;
 854         }
 855
 856         if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
 857                 ret = os_snprintf(pos, end - pos, "%sSHARED",
 858                                   pos == buf ? "" : " ");
 859                 if (ret < 0 || ret >= end - pos) {
 860                         end[-1] = '\0';
 861                         return buf;
 862                 }
 863                 pos += ret;
 864         }
 865
 866         if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
 867                 ret = os_snprintf(pos, end - pos, "%sLEAP",
 868                                   pos == buf ? "" : " ");
 869                 if (ret < 0 || ret >= end - pos) {
 870                         end[-1] = '\0';
 871                         return buf;
 872                 }
 873                 pos += ret;
 874         }
 875
 876         if (pos == buf) {
 877                 os_free(buf);
 878                 buf = NULL;
 879         }
 880
 881         return buf;
 882 }
 883 #endif /* NO_CONFIG_WRITE */
 884
 885
 886 static int * wpa_config_parse_int_array(const char *value)
 887 {
 888         int *freqs;
 889         size_t used, len;
 890         const char *pos;
 891
 892         used = 0;
 893         len = 10;
 894         freqs = os_calloc(len + 1, sizeof(int));
 895         if (freqs == NULL)
 896                 return NULL;
 897
 898         pos = value;
 899         while (pos) {
 900                 while (*pos == ' ')
 901                         pos++;
 902                 if (used == len) {
 903                         int *n;
 904                         size_t i;
 905                         n = os_realloc_array(freqs, len * 2 + 1, sizeof(int));
 906                         if (n == NULL) {
 907                                 os_free(freqs);
 908                                 return NULL;
 909                         }
 910                         for (i = len; i <= len * 2; i++)
 911                                 n[i] = 0;
 912                         freqs = n;
 913                         len *= 2;
 914                 }
 915
 916                 freqs[used] = atoi(pos);
 917                 if (freqs[used] == 0)
 918                         break;
 919                 used++;
 920                 pos = os_strchr(pos + 1, ' ');
 921         }
 922
 923         return freqs;
 924 }
 925
 926
 927 static int wpa_config_parse_scan_freq(const struct parse_data *data,
 928                                       struct wpa_ssid *ssid, int line,
 929                                       const char *value)
 930 {
 931         int *freqs;
 932
 933         freqs = wpa_config_parse_int_array(value);
 934         if (freqs == NULL)
 935                 return -1;
 936         if (freqs[0] == 0) {
 937                 os_free(freqs);
 938                 freqs = NULL;
 939         }
 940         os_free(ssid->scan_freq);
 941         ssid->scan_freq = freqs;
 942
 943         return 0;
 944 }
 945
 946
 947 static int wpa_config_parse_freq_list(const struct parse_data *data,
 948                                       struct wpa_ssid *ssid, int line,
 949                                       const char *value)
 950 {
 951         int *freqs;
 952
 953         freqs = wpa_config_parse_int_array(value);
 954         if (freqs == NULL)
 955                 return -1;
 956         if (freqs[0] == 0) {
 957                 os_free(freqs);
 958                 freqs = NULL;
 959         }
 960         os_free(ssid->freq_list);
 961         ssid->freq_list = freqs;
 962
 963         return 0;
 964 }
 965
 966
 967 #ifndef NO_CONFIG_WRITE
 968 static char * wpa_config_write_freqs(const struct parse_data *data,
 969                                      const int *freqs)
 970 {
 971         char *buf, *pos, *end;
 972         int i, ret;
 973         size_t count;
 974
 975         if (freqs == NULL)
 976                 return NULL;
 977
 978         count = 0;
 979         for (i = 0; freqs[i]; i++)
 980                 count++;
 981
 982         pos = buf = os_zalloc(10 * count + 1);
 983         if (buf == NULL)
 984                 return NULL;
 985         end = buf + 10 * count + 1;
 986
 987         for (i = 0; freqs[i]; i++) {
 988                 ret = os_snprintf(pos, end - pos, "%s%u",
 989                                   i == 0 ? "" : " ", freqs[i]);
 990                 if (ret < 0 || ret >= end - pos) {
 991                         end[-1] = '\0';
 992                         return buf;
 993                 }
 994                 pos += ret;
 995         }
 996
 997         return buf;
 998 }
 999
1000
1001 static char * wpa_config_write_scan_freq(const struct parse_data *data,
1002                                          struct wpa_ssid *ssid)
1003 {
1004         return wpa_config_write_freqs(data, ssid->scan_freq);
1005 }
1006
1007
1008 static char * wpa_config_write_freq_list(const struct parse_data *data,
1009                                          struct wpa_ssid *ssid)
1010 {
1011         return wpa_config_write_freqs(data, ssid->freq_list);
1012 }
1013 #endif /* NO_CONFIG_WRITE */
1014
1015
1016 #ifdef IEEE8021X_EAPOL
1017 static int wpa_config_parse_eap(const struct parse_data *data,
1018                                 struct wpa_ssid *ssid, int line,
1019                                 const char *value)
1020 {
1021         int last, errors = 0;
1022         char *start, *end, *buf;
1023         struct eap_method_type *methods = NULL, *tmp;
1024         size_t num_methods = 0;
1025
1026         buf = os_strdup(value);
1027         if (buf == NULL)
1028                 return -1;
1029         start = buf;
1030
1031         while (*start != '\0') {
1032                 while (*start == ' ' || *start == '\t')
1033                         start++;
1034                 if (*start == '\0')
1035                         break;
1036                 end = start;
1037                 while (*end != ' ' && *end != '\t' && *end != '\0')
1038                         end++;
1039                 last = *end == '\0';
1040                 *end = '\0';
1041                 tmp = methods;
1042                 methods = os_realloc_array(methods, num_methods + 1,
1043                                            sizeof(*methods));
1044                 if (methods == NULL) {
1045                         os_free(tmp);
1046                         os_free(buf);
1047                         return -1;
1048                 }
1049                 methods[num_methods].method = eap_peer_get_type(
1050                         start, &methods[num_methods].vendor);
1051                 if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1052                     methods[num_methods].method == EAP_TYPE_NONE) {
1053                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
1054                                    "'%s'", line, start);
1055                         wpa_printf(MSG_ERROR, "You may need to add support for"
1056                                    " this EAP method during wpa_supplicant\n"
1057                                    "build time configuration.\n"
1058                                    "See README for more information.");
1059                         errors++;
1060                 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1061                            methods[num_methods].method == EAP_TYPE_LEAP)
1062                         ssid->leap++;
1063                 else
1064                         ssid->non_leap++;
1065                 num_methods++;
1066                 if (last)
1067                         break;
1068                 start = end + 1;
1069         }
1070         os_free(buf);
1071
1072         tmp = methods;
1073         methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods));
1074         if (methods == NULL) {
1075                 os_free(tmp);
1076                 return -1;
1077         }
1078         methods[num_methods].vendor = EAP_VENDOR_IETF;
1079         methods[num_methods].method = EAP_TYPE_NONE;
1080         num_methods++;
1081
1082         wpa_hexdump(MSG_MSGDUMP, "eap methods",
1083                     (u8 *) methods, num_methods * sizeof(*methods));
1084         os_free(ssid->eap.eap_methods);
1085         ssid->eap.eap_methods = methods;
1086         return errors ? -1 : 0;
1087 }
1088
1089
1090 static char * wpa_config_write_eap(const struct parse_data *data,
1091                                    struct wpa_ssid *ssid)
1092 {
1093         int i, ret;
1094         char *buf, *pos, *end;
1095         const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
1096         const char *name;
1097
1098         if (eap_methods == NULL)
1099                 return NULL;
1100
1101         pos = buf = os_zalloc(100);
1102         if (buf == NULL)
1103                 return NULL;
1104         end = buf + 100;
1105
1106         for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
1107                      eap_methods[i].method != EAP_TYPE_NONE; i++) {
1108                 name = eap_get_name(eap_methods[i].vendor,
1109                                     eap_methods[i].method);
1110                 if (name) {
1111                         ret = os_snprintf(pos, end - pos, "%s%s",
1112                                           pos == buf ? "" : " ", name);
1113                         if (ret < 0 || ret >= end - pos)
1114                                 break;
1115                         pos += ret;
1116                 }
1117         }
1118
1119         end[-1] = '\0';
1120
1121         return buf;
1122 }
1123
1124
1125 static int wpa_config_parse_password(const struct parse_data *data,
1126                                      struct wpa_ssid *ssid, int line,
1127                                      const char *value)
1128 {
1129         u8 *hash;
1130
1131         if (os_strcmp(value, "NULL") == 0) {
1132                 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
1133                 bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1134                 ssid->eap.password = NULL;
1135                 ssid->eap.password_len = 0;
1136                 return 0;
1137         }
1138
1139 #ifdef CONFIG_EXT_PASSWORD
1140         if (os_strncmp(value, "ext:", 4) == 0) {
1141                 char *name = os_strdup(value + 4);
1142                 if (name == NULL)
1143                         return -1;
1144                 bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1145                 ssid->eap.password = (u8 *) name;
1146                 ssid->eap.password_len = os_strlen(name);
1147                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1148                 ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD;
1149                 return 0;
1150         }
1151 #endif /* CONFIG_EXT_PASSWORD */
1152
1153         if (os_strncmp(value, "hash:", 5) != 0) {
1154                 char *tmp;
1155                 size_t res_len;
1156
1157                 tmp = wpa_config_parse_string(value, &res_len);
1158                 if (tmp == NULL) {
1159                         wpa_printf(MSG_ERROR, "Line %d: failed to parse "
1160                                    "password.", line);
1161                         return -1;
1162                 }
1163                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
1164                                       (u8 *) tmp, res_len);
1165
1166                 bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1167                 ssid->eap.password = (u8 *) tmp;
1168                 ssid->eap.password_len = res_len;
1169                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1170                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1171
1172                 return 0;
1173         }
1174
1175
1176         /* NtPasswordHash: hash:<32 hex digits> */
1177         if (os_strlen(value + 5) != 2 * 16) {
1178                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length "
1179                            "(expected 32 hex digits)", line);
1180                 return -1;
1181         }
1182
1183         hash = os_malloc(16);
1184         if (hash == NULL)
1185                 return -1;
1186
1187         if (hexstr2bin(value + 5, hash, 16)) {
1188                 os_free(hash);
1189                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
1190                 return -1;
1191         }
1192
1193         wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
1194
1195         bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1196         ssid->eap.password = hash;
1197         ssid->eap.password_len = 16;
1198         ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1199         ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1200
1201         return 0;
1202 }
1203
1204
1205 static char * wpa_config_write_password(const struct parse_data *data,
1206                                         struct wpa_ssid *ssid)
1207 {
1208         char *buf;
1209
1210         if (ssid->eap.password == NULL)
1211                 return NULL;
1212
1213 #ifdef CONFIG_EXT_PASSWORD
1214         if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) {
1215                 buf = os_zalloc(4 + ssid->eap.password_len + 1);
1216                 if (buf == NULL)
1217                         return NULL;
1218                 os_memcpy(buf, "ext:", 4);
1219                 os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len);
1220                 return buf;
1221         }
1222 #endif /* CONFIG_EXT_PASSWORD */
1223
1224         if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
1225                 return wpa_config_write_string(
1226                         ssid->eap.password, ssid->eap.password_len);
1227         }
1228
1229         buf = os_malloc(5 + 32 + 1);
1230         if (buf == NULL)
1231                 return NULL;
1232
1233         os_memcpy(buf, "hash:", 5);
1234         wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
1235
1236         return buf;
1237 }
1238 #endif /* IEEE8021X_EAPOL */
1239
1240
1241 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
1242                                     const char *value, int idx)
1243 {
1244         char *buf, title[20];
1245         int res;
1246
1247         buf = wpa_config_parse_string(value, len);
1248         if (buf == NULL) {
1249                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
1250                            line, idx, value);
1251                 return -1;
1252         }
1253         if (*len > MAX_WEP_KEY_LEN) {
1254                 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
1255                            line, idx, value);
1256                 os_free(buf);
1257                 return -1;
1258         }
1259         if (*len && *len != 5 && *len != 13 && *len != 16) {
1260                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - "
1261                            "this network block will be ignored",
1262                            line, (unsigned int) *len);
1263         }
1264         os_memcpy(key, buf, *len);
1265         str_clear_free(buf);
1266         res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
1267         if (res >= 0 && (size_t) res < sizeof(title))
1268                 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
1269         return 0;
1270 }
1271
1272
1273 static int wpa_config_parse_wep_key0(const struct parse_data *data,
1274                                      struct wpa_ssid *ssid, int line,
1275                                      const char *value)
1276 {
1277         return wpa_config_parse_wep_key(ssid->wep_key[0],
1278                                         &ssid->wep_key_len[0], line,
1279                                         value, 0);
1280 }
1281
1282
1283 static int wpa_config_parse_wep_key1(const struct parse_data *data,
1284                                      struct wpa_ssid *ssid, int line,
1285                                      const char *value)
1286 {
1287         return wpa_config_parse_wep_key(ssid->wep_key[1],
1288                                         &ssid->wep_key_len[1], line,
1289                                         value, 1);
1290 }
1291
1292
1293 static int wpa_config_parse_wep_key2(const struct parse_data *data,
1294                                      struct wpa_ssid *ssid, int line,
1295                                      const char *value)
1296 {
1297         return wpa_config_parse_wep_key(ssid->wep_key[2],
1298                                         &ssid->wep_key_len[2], line,
1299                                         value, 2);
1300 }
1301
1302
1303 static int wpa_config_parse_wep_key3(const struct parse_data *data,
1304                                      struct wpa_ssid *ssid, int line,
1305                                      const char *value)
1306 {
1307         return wpa_config_parse_wep_key(ssid->wep_key[3],
1308                                         &ssid->wep_key_len[3], line,
1309                                         value, 3);
1310 }
1311
1312
1313 #ifndef NO_CONFIG_WRITE
1314 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
1315 {
1316         if (ssid->wep_key_len[idx] == 0)
1317                 return NULL;
1318         return wpa_config_write_string(ssid->wep_key[idx],
1319                                        ssid->wep_key_len[idx]);
1320 }
1321
1322
1323 static char * wpa_config_write_wep_key0(const struct parse_data *data,
1324                                         struct wpa_ssid *ssid)
1325 {
1326         return wpa_config_write_wep_key(ssid, 0);
1327 }
1328
1329
1330 static char * wpa_config_write_wep_key1(const struct parse_data *data,
1331                                         struct wpa_ssid *ssid)
1332 {
1333         return wpa_config_write_wep_key(ssid, 1);
1334 }
1335
1336
1337 static char * wpa_config_write_wep_key2(const struct parse_data *data,
1338                                         struct wpa_ssid *ssid)
1339 {
1340         return wpa_config_write_wep_key(ssid, 2);
1341 }
1342
1343
1344 static char * wpa_config_write_wep_key3(const struct parse_data *data,
1345                                         struct wpa_ssid *ssid)
1346 {
1347         return wpa_config_write_wep_key(ssid, 3);
1348 }
1349 #endif /* NO_CONFIG_WRITE */
1350
1351
1352 #ifdef CONFIG_P2P
1353
1354 static int wpa_config_parse_go_p2p_dev_addr(const struct parse_data *data,
1355                                             struct wpa_ssid *ssid, int line,
1356                                             const char *value)
1357 {
1358         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
1359             os_strcmp(value, "any") == 0) {
1360                 os_memset(ssid->go_p2p_dev_addr, 0, ETH_ALEN);
1361                 wpa_printf(MSG_MSGDUMP, "GO P2P Device Address any");
1362                 return 0;
1363         }
1364         if (hwaddr_aton(value, ssid->go_p2p_dev_addr)) {
1365                 wpa_printf(MSG_ERROR, "Line %d: Invalid GO P2P Device Address '%s'.",
1366                            line, value);
1367                 return -1;
1368         }
1369         ssid->bssid_set = 1;
1370         wpa_printf(MSG_MSGDUMP, "GO P2P Device Address " MACSTR,
1371                    MAC2STR(ssid->go_p2p_dev_addr));
1372         return 0;
1373 }
1374
1375
1376 #ifndef NO_CONFIG_WRITE
1377 static char * wpa_config_write_go_p2p_dev_addr(const struct parse_data *data,
1378                                                struct wpa_ssid *ssid)
1379 {
1380         char *value;
1381         int res;
1382
1383         if (is_zero_ether_addr(ssid->go_p2p_dev_addr))
1384                 return NULL;
1385
1386         value = os_malloc(20);
1387         if (value == NULL)
1388                 return NULL;
1389         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->go_p2p_dev_addr));
1390         if (res < 0 || res >= 20) {
1391                 os_free(value);
1392                 return NULL;
1393         }
1394         value[20 - 1] = '\0';
1395         return value;
1396 }
1397 #endif /* NO_CONFIG_WRITE */
1398
1399
1400 static int wpa_config_parse_p2p_client_list(const struct parse_data *data,
1401                                             struct wpa_ssid *ssid, int line,
1402                                             const char *value)
1403 {
1404         const char *pos;
1405         u8 *buf, *n, addr[ETH_ALEN];
1406         size_t count;
1407
1408         buf = NULL;
1409         count = 0;
1410
1411         pos = value;
1412         while (pos && *pos) {
1413                 while (*pos == ' ')
1414                         pos++;
1415
1416                 if (hwaddr_aton(pos, addr)) {
1417                         if (count == 0) {
1418                                 wpa_printf(MSG_ERROR, "Line %d: Invalid "
1419                                            "p2p_client_list address '%s'.",
1420                                            line, value);
1421                                 os_free(buf);
1422                                 return -1;
1423                         }
1424                         /* continue anyway since this could have been from a
1425                          * truncated configuration file line */
1426                         wpa_printf(MSG_INFO, "Line %d: Ignore likely "
1427                                    "truncated p2p_client_list address '%s'",
1428                                    line, pos);
1429                 } else {
1430                         n = os_realloc_array(buf, count + 1, ETH_ALEN);
1431                         if (n == NULL) {
1432                                 os_free(buf);
1433                                 return -1;
1434                         }
1435                         buf = n;
1436                         os_memmove(buf + ETH_ALEN, buf, count * ETH_ALEN);
1437                         os_memcpy(buf, addr, ETH_ALEN);
1438                         count++;
1439                         wpa_hexdump(MSG_MSGDUMP, "p2p_client_list",
1440                                     addr, ETH_ALEN);
1441                 }
1442
1443                 pos = os_strchr(pos, ' ');
1444         }
1445
1446         os_free(ssid->p2p_client_list);
1447         ssid->p2p_client_list = buf;
1448         ssid->num_p2p_clients = count;
1449
1450         return 0;
1451 }
1452
1453
1454 #ifndef NO_CONFIG_WRITE
1455 static char * wpa_config_write_p2p_client_list(const struct parse_data *data,
1456                                                struct wpa_ssid *ssid)
1457 {
1458         char *value, *end, *pos;
1459         int res;
1460         size_t i;
1461
1462         if (ssid->p2p_client_list == NULL || ssid->num_p2p_clients == 0)
1463                 return NULL;
1464
1465         value = os_malloc(20 * ssid->num_p2p_clients);
1466         if (value == NULL)
1467                 return NULL;
1468         pos = value;
1469         end = value + 20 * ssid->num_p2p_clients;
1470
1471         for (i = ssid->num_p2p_clients; i > 0; i--) {
1472                 res = os_snprintf(pos, end - pos, MACSTR " ",
1473                                   MAC2STR(ssid->p2p_client_list +
1474                                           (i - 1) * ETH_ALEN));
1475                 if (res < 0 || res >= end - pos) {
1476                         os_free(value);
1477                         return NULL;
1478                 }
1479                 pos += res;
1480         }
1481
1482         if (pos > value)
1483                 pos[-1] = '\0';
1484
1485         return value;
1486 }
1487 #endif /* NO_CONFIG_WRITE */
1488
1489
1490 static int wpa_config_parse_psk_list(const struct parse_data *data,
1491                                      struct wpa_ssid *ssid, int line,
1492                                      const char *value)
1493 {
1494         struct psk_list_entry *p;
1495         const char *pos;
1496
1497         p = os_zalloc(sizeof(*p));
1498         if (p == NULL)
1499                 return -1;
1500
1501         pos = value;
1502         if (os_strncmp(pos, "P2P-", 4) == 0) {
1503                 p->p2p = 1;
1504                 pos += 4;
1505         }
1506
1507         if (hwaddr_aton(pos, p->addr)) {
1508                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list address '%s'",
1509                            line, pos);
1510                 os_free(p);
1511                 return -1;
1512         }
1513         pos += 17;
1514         if (*pos != '-') {
1515                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list '%s'",
1516                            line, pos);
1517                 os_free(p);
1518                 return -1;
1519         }
1520         pos++;
1521
1522         if (hexstr2bin(pos, p->psk, PMK_LEN) || pos[PMK_LEN * 2] != '\0') {
1523                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list PSK '%s'",
1524                            line, pos);
1525                 os_free(p);
1526                 return -1;
1527         }
1528
1529         dl_list_add(&ssid->psk_list, &p->list);
1530
1531         return 0;
1532 }
1533
1534
1535 #ifndef NO_CONFIG_WRITE
1536 static char * wpa_config_write_psk_list(const struct parse_data *data,
1537                                         struct wpa_ssid *ssid)
1538 {
1539         return NULL;
1540 }
1541 #endif /* NO_CONFIG_WRITE */
1542
1543 #endif /* CONFIG_P2P */
1544
1545 /* Helper macros for network block parser */
1546
1547 #ifdef OFFSET
1548 #undef OFFSET
1549 #endif /* OFFSET */
1550 /* OFFSET: Get offset of a variable within the wpa_ssid structure */
1551 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
1552
1553 /* STR: Define a string variable for an ASCII string; f = field name */
1554 #ifdef NO_CONFIG_WRITE
1555 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
1556 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f)
1557 #else /* NO_CONFIG_WRITE */
1558 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
1559 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f)
1560 #endif /* NO_CONFIG_WRITE */
1561 #define STR(f) _STR(f), NULL, NULL, NULL, 0
1562 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0
1563 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
1564 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1
1565
1566 /* STR_LEN: Define a string variable with a separate variable for storing the
1567  * data length. Unlike STR(), this can be used to store arbitrary binary data
1568  * (i.e., even nul termination character). */
1569 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
1570 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len)
1571 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
1572 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0
1573 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
1574
1575 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
1576  * explicitly specified. */
1577 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
1578 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
1579 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
1580
1581 #ifdef NO_CONFIG_WRITE
1582 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
1583 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0
1584 #else /* NO_CONFIG_WRITE */
1585 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1586         OFFSET(f), (void *) 0
1587 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1588         OFFSET(eap.f), (void *) 0
1589 #endif /* NO_CONFIG_WRITE */
1590
1591 /* INT: Define an integer variable */
1592 #define INT(f) _INT(f), NULL, NULL, 0
1593 #define INTe(f) _INTe(f), NULL, NULL, 0
1594
1595 /* INT_RANGE: Define an integer variable with allowed value range */
1596 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
1597
1598 /* FUNC: Define a configuration variable that uses a custom function for
1599  * parsing and writing the value. */
1600 #ifdef NO_CONFIG_WRITE
1601 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
1602 #else /* NO_CONFIG_WRITE */
1603 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
1604         NULL, NULL, NULL, NULL
1605 #endif /* NO_CONFIG_WRITE */
1606 #define FUNC(f) _FUNC(f), 0
1607 #define FUNC_KEY(f) _FUNC(f), 1
1608
1609 /*
1610  * Table of network configuration variables. This table is used to parse each
1611  * network configuration variable, e.g., each line in wpa_supplicant.conf file
1612  * that is inside a network block.
1613  *
1614  * This table is generated using the helper macros defined above and with
1615  * generous help from the C pre-processor. The field name is stored as a string
1616  * into .name and for STR and INT types, the offset of the target buffer within
1617  * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
1618  * offset to the field containing the length of the configuration variable.
1619  * .param3 and .param4 can be used to mark the allowed range (length for STR
1620  * and value for INT).
1621  *
1622  * For each configuration line in wpa_supplicant.conf, the parser goes through
1623  * this table and select the entry that matches with the field name. The parser
1624  * function (.parser) is then called to parse the actual value of the field.
1625  *
1626  * This kind of mechanism makes it easy to add new configuration parameters,
1627  * since only one line needs to be added into this table and into the
1628  * struct wpa_ssid definition if the new variable is either a string or
1629  * integer. More complex types will need to use their own parser and writer
1630  * functions.
1631  */
1632 static const struct parse_data ssid_fields[] = {
1633         { STR_RANGE(ssid, 0, MAX_SSID_LEN) },
1634         { INT_RANGE(scan_ssid, 0, 1) },
1635         { FUNC(bssid) },
1636         { FUNC_KEY(psk) },
1637         { FUNC(proto) },
1638         { FUNC(key_mgmt) },
1639         { INT(bg_scan_period) },
1640         { FUNC(pairwise) },
1641         { FUNC(group) },
1642         { FUNC(auth_alg) },
1643         { FUNC(scan_freq) },
1644         { FUNC(freq_list) },
1645 #ifdef IEEE8021X_EAPOL
1646         { FUNC(eap) },
1647         { STR_LENe(identity) },
1648         { STR_LENe(anonymous_identity) },
1649         { FUNC_KEY(password) },
1650         { STRe(ca_cert) },
1651         { STRe(ca_path) },
1652         { STRe(client_cert) },
1653         { STRe(private_key) },
1654         { STR_KEYe(private_key_passwd) },
1655         { STRe(dh_file) },
1656         { STRe(subject_match) },
1657         { STRe(altsubject_match) },
1658         { STRe(domain_suffix_match) },
1659         { STRe(ca_cert2) },
1660         { STRe(ca_path2) },
1661         { STRe(client_cert2) },
1662         { STRe(private_key2) },
1663         { STR_KEYe(private_key2_passwd) },
1664         { STRe(dh_file2) },
1665         { STRe(subject_match2) },
1666         { STRe(altsubject_match2) },
1667         { STRe(domain_suffix_match2) },
1668         { STRe(phase1) },
1669         { STRe(phase2) },
1670         { STRe(pcsc) },
1671         { STR_KEYe(pin) },
1672         { STRe(engine_id) },
1673         { STRe(key_id) },
1674         { STRe(cert_id) },
1675         { STRe(ca_cert_id) },
1676         { STR_KEYe(pin2) },
1677         { STRe(engine2_id) },
1678         { STRe(key2_id) },
1679         { STRe(cert2_id) },
1680         { STRe(ca_cert2_id) },
1681         { INTe(engine) },
1682         { INTe(engine2) },
1683         { INT(eapol_flags) },
1684         { INTe(sim_num) },
1685 #endif /* IEEE8021X_EAPOL */
1686         { FUNC_KEY(wep_key0) },
1687         { FUNC_KEY(wep_key1) },
1688         { FUNC_KEY(wep_key2) },
1689         { FUNC_KEY(wep_key3) },
1690         { INT(wep_tx_keyidx) },
1691         { INT(priority) },
1692 #ifdef IEEE8021X_EAPOL
1693         { INT(eap_workaround) },
1694         { STRe(pac_file) },
1695         { INTe(fragment_size) },
1696         { INTe(ocsp) },
1697 #endif /* IEEE8021X_EAPOL */
1698         { INT_RANGE(mode, 0, 4) },
1699         { INT_RANGE(proactive_key_caching, 0, 1) },
1700         { INT_RANGE(disabled, 0, 2) },
1701         { STR(id_str) },
1702 #ifdef CONFIG_IEEE80211W
1703         { INT_RANGE(ieee80211w, 0, 2) },
1704 #endif /* CONFIG_IEEE80211W */
1705         { INT_RANGE(peerkey, 0, 1) },
1706         { INT_RANGE(mixed_cell, 0, 1) },
1707         { INT_RANGE(frequency, 0, 65000) },
1708         { INT(wpa_ptk_rekey) },
1709         { STR(bgscan) },
1710         { INT_RANGE(ignore_broadcast_ssid, 0, 2) },
1711 #ifdef CONFIG_P2P
1712         { FUNC(go_p2p_dev_addr) },
1713         { FUNC(p2p_client_list) },
1714         { FUNC(psk_list) },
1715 #endif /* CONFIG_P2P */
1716 #ifdef CONFIG_HT_OVERRIDES
1717         { INT_RANGE(disable_ht, 0, 1) },
1718         { INT_RANGE(disable_ht40, -1, 1) },
1719         { INT_RANGE(disable_sgi, 0, 1) },
1720         { INT_RANGE(disable_ldpc, 0, 1) },
1721         { INT_RANGE(ht40_intolerant, 0, 1) },
1722         { INT_RANGE(disable_max_amsdu, -1, 1) },
1723         { INT_RANGE(ampdu_factor, -1, 3) },
1724         { INT_RANGE(ampdu_density, -1, 7) },
1725         { STR(ht_mcs) },
1726 #endif /* CONFIG_HT_OVERRIDES */
1727 #ifdef CONFIG_VHT_OVERRIDES
1728         { INT_RANGE(disable_vht, 0, 1) },
1729         { INT(vht_capa) },
1730         { INT(vht_capa_mask) },
1731         { INT_RANGE(vht_rx_mcs_nss_1, -1, 3) },
1732         { INT_RANGE(vht_rx_mcs_nss_2, -1, 3) },
1733         { INT_RANGE(vht_rx_mcs_nss_3, -1, 3) },
1734         { INT_RANGE(vht_rx_mcs_nss_4, -1, 3) },
1735         { INT_RANGE(vht_rx_mcs_nss_5, -1, 3) },
1736         { INT_RANGE(vht_rx_mcs_nss_6, -1, 3) },
1737         { INT_RANGE(vht_rx_mcs_nss_7, -1, 3) },
1738         { INT_RANGE(vht_rx_mcs_nss_8, -1, 3) },
1739         { INT_RANGE(vht_tx_mcs_nss_1, -1, 3) },
1740         { INT_RANGE(vht_tx_mcs_nss_2, -1, 3) },
1741         { INT_RANGE(vht_tx_mcs_nss_3, -1, 3) },
1742         { INT_RANGE(vht_tx_mcs_nss_4, -1, 3) },
1743         { INT_RANGE(vht_tx_mcs_nss_5, -1, 3) },
1744         { INT_RANGE(vht_tx_mcs_nss_6, -1, 3) },
1745         { INT_RANGE(vht_tx_mcs_nss_7, -1, 3) },
1746         { INT_RANGE(vht_tx_mcs_nss_8, -1, 3) },
1747 #endif /* CONFIG_VHT_OVERRIDES */
1748         { INT(ap_max_inactivity) },
1749         { INT(dtim_period) },
1750         { INT(beacon_int) },
1751 #ifdef CONFIG_MACSEC
1752         { INT_RANGE(macsec_policy, 0, 1) },
1753 #endif /* CONFIG_MACSEC */
1754 };
1755
1756 #undef OFFSET
1757 #undef _STR
1758 #undef STR
1759 #undef STR_KEY
1760 #undef _STR_LEN
1761 #undef STR_LEN
1762 #undef STR_LEN_KEY
1763 #undef _STR_RANGE
1764 #undef STR_RANGE
1765 #undef STR_RANGE_KEY
1766 #undef _INT
1767 #undef INT
1768 #undef INT_RANGE
1769 #undef _FUNC
1770 #undef FUNC
1771 #undef FUNC_KEY
1772 #define NUM_SSID_FIELDS ARRAY_SIZE(ssid_fields)
1773
1774
1775 /**
1776  * wpa_config_add_prio_network - Add a network to priority lists
1777  * @config: Configuration data from wpa_config_read()
1778  * @ssid: Pointer to the network configuration to be added to the list
1779  * Returns: 0 on success, -1 on failure
1780  *
1781  * This function is used to add a network block to the priority list of
1782  * networks. This must be called for each network when reading in the full
1783  * configuration. In addition, this can be used indirectly when updating
1784  * priorities by calling wpa_config_update_prio_list().
1785  */
1786 int wpa_config_add_prio_network(struct wpa_config *config,
1787                                 struct wpa_ssid *ssid)
1788 {
1789         int prio;
1790         struct wpa_ssid *prev, **nlist;
1791
1792         /*
1793          * Add to an existing priority list if one is available for the
1794          * configured priority level for this network.
1795          */
1796         for (prio = 0; prio < config->num_prio; prio++) {
1797                 prev = config->pssid[prio];
1798                 if (prev->priority == ssid->priority) {
1799                         while (prev->pnext)
1800                                 prev = prev->pnext;
1801                         prev->pnext = ssid;
1802                         return 0;
1803                 }
1804         }
1805
1806         /* First network for this priority - add a new priority list */
1807         nlist = os_realloc_array(config->pssid, config->num_prio + 1,
1808                                  sizeof(struct wpa_ssid *));
1809         if (nlist == NULL)
1810                 return -1;
1811
1812         for (prio = 0; prio < config->num_prio; prio++) {
1813                 if (nlist[prio]->priority < ssid->priority) {
1814                         os_memmove(&nlist[prio + 1], &nlist[prio],
1815                                    (config->num_prio - prio) *
1816                                    sizeof(struct wpa_ssid *));
1817                         break;
1818                 }
1819         }
1820
1821         nlist[prio] = ssid;
1822         config->num_prio++;
1823         config->pssid = nlist;
1824
1825         return 0;
1826 }
1827
1828
1829 /**
1830  * wpa_config_update_prio_list - Update network priority list
1831  * @config: Configuration data from wpa_config_read()
1832  * Returns: 0 on success, -1 on failure
1833  *
1834  * This function is called to update the priority list of networks in the
1835  * configuration when a network is being added or removed. This is also called
1836  * if a priority for a network is changed.
1837  */
1838 int wpa_config_update_prio_list(struct wpa_config *config)
1839 {
1840         struct wpa_ssid *ssid;
1841         int ret = 0;
1842
1843         os_free(config->pssid);
1844         config->pssid = NULL;
1845         config->num_prio = 0;
1846
1847         ssid = config->ssid;
1848         while (ssid) {
1849                 ssid->pnext = NULL;
1850                 if (wpa_config_add_prio_network(config, ssid) < 0)
1851                         ret = -1;
1852                 ssid = ssid->next;
1853         }
1854
1855         return ret;
1856 }
1857
1858
1859 #ifdef IEEE8021X_EAPOL
1860 static void eap_peer_config_free(struct eap_peer_config *eap)
1861 {
1862         os_free(eap->eap_methods);
1863         bin_clear_free(eap->identity, eap->identity_len);
1864         os_free(eap->anonymous_identity);
1865         bin_clear_free(eap->password, eap->password_len);
1866         os_free(eap->ca_cert);
1867         os_free(eap->ca_path);
1868         os_free(eap->client_cert);
1869         os_free(eap->private_key);
1870         str_clear_free(eap->private_key_passwd);
1871         os_free(eap->dh_file);
1872         os_free(eap->subject_match);
1873         os_free(eap->altsubject_match);
1874         os_free(eap->domain_suffix_match);
1875         os_free(eap->ca_cert2);
1876         os_free(eap->ca_path2);
1877         os_free(eap->client_cert2);
1878         os_free(eap->private_key2);
1879         str_clear_free(eap->private_key2_passwd);
1880         os_free(eap->dh_file2);
1881         os_free(eap->subject_match2);
1882         os_free(eap->altsubject_match2);
1883         os_free(eap->domain_suffix_match2);
1884         os_free(eap->phase1);
1885         os_free(eap->phase2);
1886         os_free(eap->pcsc);
1887         str_clear_free(eap->pin);
1888         os_free(eap->engine_id);
1889         os_free(eap->key_id);
1890         os_free(eap->cert_id);
1891         os_free(eap->ca_cert_id);
1892         os_free(eap->key2_id);
1893         os_free(eap->cert2_id);
1894         os_free(eap->ca_cert2_id);
1895         str_clear_free(eap->pin2);
1896         os_free(eap->engine2_id);
1897         os_free(eap->otp);
1898         os_free(eap->pending_req_otp);
1899         os_free(eap->pac_file);
1900         bin_clear_free(eap->new_password, eap->new_password_len);
1901         str_clear_free(eap->external_sim_resp);
1902 }
1903 #endif /* IEEE8021X_EAPOL */
1904
1905
1906 /**
1907  * wpa_config_free_ssid - Free network/ssid configuration data
1908  * @ssid: Configuration data for the network
1909  *
1910  * This function frees all resources allocated for the network configuration
1911  * data.
1912  */
1913 void wpa_config_free_ssid(struct wpa_ssid *ssid)
1914 {
1915         struct psk_list_entry *psk;
1916
1917         os_free(ssid->ssid);
1918         os_memset(ssid->psk, 0, sizeof(ssid->psk));
1919         str_clear_free(ssid->passphrase);
1920         os_free(ssid->ext_psk);
1921 #ifdef IEEE8021X_EAPOL
1922         eap_peer_config_free(&ssid->eap);
1923 #endif /* IEEE8021X_EAPOL */
1924         os_free(ssid->id_str);
1925         os_free(ssid->scan_freq);
1926         os_free(ssid->freq_list);
1927         os_free(ssid->bgscan);
1928         os_free(ssid->p2p_client_list);
1929 #ifdef CONFIG_HT_OVERRIDES
1930         os_free(ssid->ht_mcs);
1931 #endif /* CONFIG_HT_OVERRIDES */
1932         while ((psk = dl_list_first(&ssid->psk_list, struct psk_list_entry,
1933                                     list))) {
1934                 dl_list_del(&psk->list);
1935                 os_free(psk);
1936         }
1937         os_free(ssid);
1938 }
1939
1940
1941 void wpa_config_free_cred(struct wpa_cred *cred)
1942 {
1943         size_t i;
1944
1945         os_free(cred->realm);
1946         str_clear_free(cred->username);
1947         str_clear_free(cred->password);
1948         os_free(cred->ca_cert);
1949         os_free(cred->client_cert);
1950         os_free(cred->private_key);
1951         str_clear_free(cred->private_key_passwd);
1952         os_free(cred->imsi);
1953         str_clear_free(cred->milenage);
1954         for (i = 0; i < cred->num_domain; i++)
1955                 os_free(cred->domain[i]);
1956         os_free(cred->domain);
1957         os_free(cred->domain_suffix_match);
1958         os_free(cred->eap_method);
1959         os_free(cred->phase1);
1960         os_free(cred->phase2);
1961         os_free(cred->excluded_ssid);
1962         os_free(cred->roaming_partner);
1963         os_free(cred->provisioning_sp);
1964         for (i = 0; i < cred->num_req_conn_capab; i++)
1965                 os_free(cred->req_conn_capab_port[i]);
1966         os_free(cred->req_conn_capab_port);
1967         os_free(cred->req_conn_capab_proto);
1968         os_free(cred);
1969 }
1970
1971
1972 void wpa_config_flush_blobs(struct wpa_config *config)
1973 {
1974 #ifndef CONFIG_NO_CONFIG_BLOBS
1975         struct wpa_config_blob *blob, *prev;
1976
1977         blob = config->blobs;
1978         config->blobs = NULL;
1979         while (blob) {
1980                 prev = blob;
1981                 blob = blob->next;
1982                 wpa_config_free_blob(prev);
1983         }
1984 #endif /* CONFIG_NO_CONFIG_BLOBS */
1985 }
1986
1987
1988 /**
1989  * wpa_config_free - Free configuration data
1990  * @config: Configuration data from wpa_config_read()
1991  *
1992  * This function frees all resources allocated for the configuration data by
1993  * wpa_config_read().
1994  */
1995 void wpa_config_free(struct wpa_config *config)
1996 {
1997         struct wpa_ssid *ssid, *prev = NULL;
1998         struct wpa_cred *cred, *cprev;
1999
2000         ssid = config->ssid;
2001         while (ssid) {
2002                 prev = ssid;
2003                 ssid = ssid->next;
2004                 wpa_config_free_ssid(prev);
2005         }
2006
2007         cred = config->cred;
2008         while (cred) {
2009                 cprev = cred;
2010                 cred = cred->next;
2011                 wpa_config_free_cred(cprev);
2012         }
2013
2014         wpa_config_flush_blobs(config);
2015
2016         wpabuf_free(config->wps_vendor_ext_m1);
2017         os_free(config->ctrl_interface);
2018         os_free(config->ctrl_interface_group);
2019         os_free(config->opensc_engine_path);
2020         os_free(config->pkcs11_engine_path);
2021         os_free(config->pkcs11_module_path);
2022         os_free(config->pcsc_reader);
2023         str_clear_free(config->pcsc_pin);
2024         os_free(config->driver_param);
2025         os_free(config->device_name);
2026         os_free(config->manufacturer);
2027         os_free(config->model_name);
2028         os_free(config->model_number);
2029         os_free(config->serial_number);
2030         os_free(config->config_methods);
2031         os_free(config->p2p_ssid_postfix);
2032         os_free(config->pssid);
2033         os_free(config->p2p_pref_chan);
2034         os_free(config->p2p_no_go_freq.range);
2035         os_free(config->autoscan);
2036         os_free(config->freq_list);
2037         wpabuf_free(config->wps_nfc_dh_pubkey);
2038         wpabuf_free(config->wps_nfc_dh_privkey);
2039         wpabuf_free(config->wps_nfc_dev_pw);
2040         os_free(config->ext_password_backend);
2041         os_free(config->sae_groups);
2042         wpabuf_free(config->ap_vendor_elements);
2043         os_free(config->osu_dir);
2044         os_free(config->wowlan_triggers);
2045         os_free(config);
2046 }
2047
2048
2049 /**
2050  * wpa_config_foreach_network - Iterate over each configured network
2051  * @config: Configuration data from wpa_config_read()
2052  * @func: Callback function to process each network
2053  * @arg: Opaque argument to pass to callback function
2054  *
2055  * Iterate over the set of configured networks calling the specified
2056  * function for each item. We guard against callbacks removing the
2057  * supplied network.
2058  */
2059 void wpa_config_foreach_network(struct wpa_config *config,
2060                                 void (*func)(void *, struct wpa_ssid *),
2061                                 void *arg)
2062 {
2063         struct wpa_ssid *ssid, *next;
2064
2065         ssid = config->ssid;
2066         while (ssid) {
2067                 next = ssid->next;
2068                 func(arg, ssid);
2069                 ssid = next;
2070         }
2071 }
2072
2073
2074 /**
2075  * wpa_config_get_network - Get configured network based on id
2076  * @config: Configuration data from wpa_config_read()
2077  * @id: Unique network id to search for
2078  * Returns: Network configuration or %NULL if not found
2079  */
2080 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
2081 {
2082         struct wpa_ssid *ssid;
2083
2084         ssid = config->ssid;
2085         while (ssid) {
2086                 if (id == ssid->id)
2087                         break;
2088                 ssid = ssid->next;
2089         }
2090
2091         return ssid;
2092 }
2093
2094
2095 /**
2096  * wpa_config_add_network - Add a new network with empty configuration
2097  * @config: Configuration data from wpa_config_read()
2098  * Returns: The new network configuration or %NULL if operation failed
2099  */
2100 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
2101 {
2102         int id;
2103         struct wpa_ssid *ssid, *last = NULL;
2104
2105         id = -1;
2106         ssid = config->ssid;
2107         while (ssid) {
2108                 if (ssid->id > id)
2109                         id = ssid->id;
2110                 last = ssid;
2111                 ssid = ssid->next;
2112         }
2113         id++;
2114
2115         ssid = os_zalloc(sizeof(*ssid));
2116         if (ssid == NULL)
2117                 return NULL;
2118         ssid->id = id;
2119         dl_list_init(&ssid->psk_list);
2120         if (last)
2121                 last->next = ssid;
2122         else
2123                 config->ssid = ssid;
2124
2125         wpa_config_update_prio_list(config);
2126
2127         return ssid;
2128 }
2129
2130
2131 /**
2132  * wpa_config_remove_network - Remove a configured network based on id
2133  * @config: Configuration data from wpa_config_read()
2134  * @id: Unique network id to search for
2135  * Returns: 0 on success, or -1 if the network was not found
2136  */
2137 int wpa_config_remove_network(struct wpa_config *config, int id)
2138 {
2139         struct wpa_ssid *ssid, *prev = NULL;
2140
2141         ssid = config->ssid;
2142         while (ssid) {
2143                 if (id == ssid->id)
2144                         break;
2145                 prev = ssid;
2146                 ssid = ssid->next;
2147         }
2148
2149         if (ssid == NULL)
2150                 return -1;
2151
2152         if (prev)
2153                 prev->next = ssid->next;
2154         else
2155                 config->ssid = ssid->next;
2156
2157         wpa_config_update_prio_list(config);
2158         wpa_config_free_ssid(ssid);
2159         return 0;
2160 }
2161
2162
2163 /**
2164  * wpa_config_set_network_defaults - Set network default values
2165  * @ssid: Pointer to network configuration data
2166  */
2167 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
2168 {
2169         ssid->proto = DEFAULT_PROTO;
2170         ssid->pairwise_cipher = DEFAULT_PAIRWISE;
2171         ssid->group_cipher = DEFAULT_GROUP;
2172         ssid->key_mgmt = DEFAULT_KEY_MGMT;
2173         ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
2174 #ifdef IEEE8021X_EAPOL
2175         ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
2176         ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
2177         ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
2178         ssid->eap.sim_num = DEFAULT_USER_SELECTED_SIM;
2179 #endif /* IEEE8021X_EAPOL */
2180 #ifdef CONFIG_HT_OVERRIDES
2181         ssid->disable_ht = DEFAULT_DISABLE_HT;
2182         ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
2183         ssid->disable_sgi = DEFAULT_DISABLE_SGI;
2184         ssid->disable_ldpc = DEFAULT_DISABLE_LDPC;
2185         ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
2186         ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
2187         ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
2188 #endif /* CONFIG_HT_OVERRIDES */
2189 #ifdef CONFIG_VHT_OVERRIDES
2190         ssid->vht_rx_mcs_nss_1 = -1;
2191         ssid->vht_rx_mcs_nss_2 = -1;
2192         ssid->vht_rx_mcs_nss_3 = -1;
2193         ssid->vht_rx_mcs_nss_4 = -1;
2194         ssid->vht_rx_mcs_nss_5 = -1;
2195         ssid->vht_rx_mcs_nss_6 = -1;
2196         ssid->vht_rx_mcs_nss_7 = -1;
2197         ssid->vht_rx_mcs_nss_8 = -1;
2198         ssid->vht_tx_mcs_nss_1 = -1;
2199         ssid->vht_tx_mcs_nss_2 = -1;
2200         ssid->vht_tx_mcs_nss_3 = -1;
2201         ssid->vht_tx_mcs_nss_4 = -1;
2202         ssid->vht_tx_mcs_nss_5 = -1;
2203         ssid->vht_tx_mcs_nss_6 = -1;
2204         ssid->vht_tx_mcs_nss_7 = -1;
2205         ssid->vht_tx_mcs_nss_8 = -1;
2206 #endif /* CONFIG_VHT_OVERRIDES */
2207         ssid->proactive_key_caching = -1;
2208 #ifdef CONFIG_IEEE80211W
2209         ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
2210 #endif /* CONFIG_IEEE80211W */
2211 }
2212
2213
2214 /**
2215  * wpa_config_set - Set a variable in network configuration
2216  * @ssid: Pointer to network configuration data
2217  * @var: Variable name, e.g., "ssid"
2218  * @value: Variable value
2219  * @line: Line number in configuration file or 0 if not used
2220  * Returns: 0 on success, -1 on failure
2221  *
2222  * This function can be used to set network configuration variables based on
2223  * both the configuration file and management interface input. The value
2224  * parameter must be in the same format as the text-based configuration file is
2225  * using. For example, strings are using double quotation marks.
2226  */
2227 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
2228                    int line)
2229 {
2230         size_t i;
2231         int ret = 0;
2232
2233         if (ssid == NULL || var == NULL || value == NULL)
2234                 return -1;
2235
2236         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2237                 const struct parse_data *field = &ssid_fields[i];
2238                 if (os_strcmp(var, field->name) != 0)
2239                         continue;
2240
2241                 if (field->parser(field, ssid, line, value)) {
2242                         if (line) {
2243                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
2244                                            "parse %s '%s'.", line, var, value);
2245                         }
2246                         ret = -1;
2247                 }
2248                 break;
2249         }
2250         if (i == NUM_SSID_FIELDS) {
2251                 if (line) {
2252                         wpa_printf(MSG_ERROR, "Line %d: unknown network field "
2253                                    "'%s'.", line, var);
2254                 }
2255                 ret = -1;
2256         }
2257
2258         return ret;
2259 }
2260
2261
2262 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
2263                           const char *value)
2264 {
2265         size_t len;
2266         char *buf;
2267         int ret;
2268
2269         len = os_strlen(value);
2270         buf = os_malloc(len + 3);
2271         if (buf == NULL)
2272                 return -1;
2273         buf[0] = '"';
2274         os_memcpy(buf + 1, value, len);
2275         buf[len + 1] = '"';
2276         buf[len + 2] = '\0';
2277         ret = wpa_config_set(ssid, var, buf, 0);
2278         os_free(buf);
2279         return ret;
2280 }
2281
2282
2283 /**
2284  * wpa_config_get_all - Get all options from network configuration
2285  * @ssid: Pointer to network configuration data
2286  * @get_keys: Determines if keys/passwords will be included in returned list
2287  *      (if they may be exported)
2288  * Returns: %NULL terminated list of all set keys and their values in the form
2289  * of [key1, val1, key2, val2, ... , NULL]
2290  *
2291  * This function can be used to get list of all configured network properties.
2292  * The caller is responsible for freeing the returned list and all its
2293  * elements.
2294  */
2295 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
2296 {
2297         const struct parse_data *field;
2298         char *key, *value;
2299         size_t i;
2300         char **props;
2301         int fields_num;
2302
2303         get_keys = get_keys && ssid->export_keys;
2304
2305         props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
2306         if (!props)
2307                 return NULL;
2308
2309         fields_num = 0;
2310         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2311                 field = &ssid_fields[i];
2312                 if (field->key_data && !get_keys)
2313                         continue;
2314                 value = field->writer(field, ssid);
2315                 if (value == NULL)
2316                         continue;
2317                 if (os_strlen(value) == 0) {
2318                         os_free(value);
2319                         continue;
2320                 }
2321
2322                 key = os_strdup(field->name);
2323                 if (key == NULL) {
2324                         os_free(value);
2325                         goto err;
2326                 }
2327
2328                 props[fields_num * 2] = key;
2329                 props[fields_num * 2 + 1] = value;
2330
2331                 fields_num++;
2332         }
2333
2334         return props;
2335
2336 err:
2337         value = *props;
2338         while (value)
2339                 os_free(value++);
2340         os_free(props);
2341         return NULL;
2342 }
2343
2344
2345 #ifndef NO_CONFIG_WRITE
2346 /**
2347  * wpa_config_get - Get a variable in network configuration
2348  * @ssid: Pointer to network configuration data
2349  * @var: Variable name, e.g., "ssid"
2350  * Returns: Value of the variable or %NULL on failure
2351  *
2352  * This function can be used to get network configuration variables. The
2353  * returned value is a copy of the configuration variable in text format, i.e,.
2354  * the same format that the text-based configuration file and wpa_config_set()
2355  * are using for the value. The caller is responsible for freeing the returned
2356  * value.
2357  */
2358 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
2359 {
2360         size_t i;
2361
2362         if (ssid == NULL || var == NULL)
2363                 return NULL;
2364
2365         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2366                 const struct parse_data *field = &ssid_fields[i];
2367                 if (os_strcmp(var, field->name) == 0)
2368                         return field->writer(field, ssid);
2369         }
2370
2371         return NULL;
2372 }
2373
2374
2375 /**
2376  * wpa_config_get_no_key - Get a variable in network configuration (no keys)
2377  * @ssid: Pointer to network configuration data
2378  * @var: Variable name, e.g., "ssid"
2379  * Returns: Value of the variable or %NULL on failure
2380  *
2381  * This function can be used to get network configuration variable like
2382  * wpa_config_get(). The only difference is that this functions does not expose
2383  * key/password material from the configuration. In case a key/password field
2384  * is requested, the returned value is an empty string or %NULL if the variable
2385  * is not set or "*" if the variable is set (regardless of its value). The
2386  * returned value is a copy of the configuration variable in text format, i.e,.
2387  * the same format that the text-based configuration file and wpa_config_set()
2388  * are using for the value. The caller is responsible for freeing the returned
2389  * value.
2390  */
2391 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
2392 {
2393         size_t i;
2394
2395         if (ssid == NULL || var == NULL)
2396                 return NULL;
2397
2398         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2399                 const struct parse_data *field = &ssid_fields[i];
2400                 if (os_strcmp(var, field->name) == 0) {
2401                         char *res = field->writer(field, ssid);
2402                         if (field->key_data) {
2403                                 if (res && res[0]) {
2404                                         wpa_printf(MSG_DEBUG, "Do not allow "
2405                                                    "key_data field to be "
2406                                                    "exposed");
2407                                         str_clear_free(res);
2408                                         return os_strdup("*");
2409                                 }
2410
2411                                 os_free(res);
2412                                 return NULL;
2413                         }
2414                         return res;
2415                 }
2416         }
2417
2418         return NULL;
2419 }
2420 #endif /* NO_CONFIG_WRITE */
2421
2422
2423 /**
2424  * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
2425  * @ssid: Pointer to network configuration data
2426  *
2427  * This function must be called to update WPA PSK when either SSID or the
2428  * passphrase has changed for the network configuration.
2429  */
2430 void wpa_config_update_psk(struct wpa_ssid *ssid)
2431 {
2432 #ifndef CONFIG_NO_PBKDF2
2433         pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
2434                     ssid->psk, PMK_LEN);
2435         wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
2436                         ssid->psk, PMK_LEN);
2437         ssid->psk_set = 1;
2438 #endif /* CONFIG_NO_PBKDF2 */
2439 }
2440
2441
2442 static int wpa_config_set_cred_req_conn_capab(struct wpa_cred *cred,
2443                                               const char *value)
2444 {
2445         u8 *proto;
2446         int **port;
2447         int *ports, *nports;
2448         const char *pos;
2449         unsigned int num_ports;
2450
2451         proto = os_realloc_array(cred->req_conn_capab_proto,
2452                                  cred->num_req_conn_capab + 1, sizeof(u8));
2453         if (proto == NULL)
2454                 return -1;
2455         cred->req_conn_capab_proto = proto;
2456
2457         port = os_realloc_array(cred->req_conn_capab_port,
2458                                 cred->num_req_conn_capab + 1, sizeof(int *));
2459         if (port == NULL)
2460                 return -1;
2461         cred->req_conn_capab_port = port;
2462
2463         proto[cred->num_req_conn_capab] = atoi(value);
2464
2465         pos = os_strchr(value, ':');
2466         if (pos == NULL) {
2467                 port[cred->num_req_conn_capab] = NULL;
2468                 cred->num_req_conn_capab++;
2469                 return 0;
2470         }
2471         pos++;
2472
2473         ports = NULL;
2474         num_ports = 0;
2475
2476         while (*pos) {
2477                 nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
2478                 if (nports == NULL) {
2479                         os_free(ports);
2480                         return -1;
2481                 }
2482                 ports = nports;
2483                 ports[num_ports++] = atoi(pos);
2484
2485                 pos = os_strchr(pos, ',');
2486                 if (pos == NULL)
2487                         break;
2488                 pos++;
2489         }
2490
2491         nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
2492         if (nports == NULL) {
2493                 os_free(ports);
2494                 return -1;
2495         }
2496         ports = nports;
2497         ports[num_ports] = -1;
2498
2499         port[cred->num_req_conn_capab] = ports;
2500         cred->num_req_conn_capab++;
2501         return 0;
2502 }
2503
2504
2505 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
2506                         const char *value, int line)
2507 {
2508         char *val;
2509         size_t len;
2510
2511         if (os_strcmp(var, "temporary") == 0) {
2512                 cred->temporary = atoi(value);
2513                 return 0;
2514         }
2515
2516         if (os_strcmp(var, "priority") == 0) {
2517                 cred->priority = atoi(value);
2518                 return 0;
2519         }
2520
2521         if (os_strcmp(var, "sp_priority") == 0) {
2522                 int prio = atoi(value);
2523                 if (prio < 0 || prio > 255)
2524                         return -1;
2525                 cred->sp_priority = prio;
2526                 return 0;
2527         }
2528
2529         if (os_strcmp(var, "pcsc") == 0) {
2530                 cred->pcsc = atoi(value);
2531                 return 0;
2532         }
2533
2534         if (os_strcmp(var, "eap") == 0) {
2535                 struct eap_method_type method;
2536                 method.method = eap_peer_get_type(value, &method.vendor);
2537                 if (method.vendor == EAP_VENDOR_IETF &&
2538                     method.method == EAP_TYPE_NONE) {
2539                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
2540                                    "for a credential", line, value);
2541                         return -1;
2542                 }
2543                 os_free(cred->eap_method);
2544                 cred->eap_method = os_malloc(sizeof(*cred->eap_method));
2545                 if (cred->eap_method == NULL)
2546                         return -1;
2547                 os_memcpy(cred->eap_method, &method, sizeof(method));
2548                 return 0;
2549         }
2550
2551         if (os_strcmp(var, "password") == 0 &&
2552             os_strncmp(value, "ext:", 4) == 0) {
2553                 str_clear_free(cred->password);
2554                 cred->password = os_strdup(value);
2555                 cred->ext_password = 1;
2556                 return 0;
2557         }
2558
2559         if (os_strcmp(var, "update_identifier") == 0) {
2560                 cred->update_identifier = atoi(value);
2561                 return 0;
2562         }
2563
2564         if (os_strcmp(var, "min_dl_bandwidth_home") == 0) {
2565                 cred->min_dl_bandwidth_home = atoi(value);
2566                 return 0;
2567         }
2568
2569         if (os_strcmp(var, "min_ul_bandwidth_home") == 0) {
2570                 cred->min_ul_bandwidth_home = atoi(value);
2571                 return 0;
2572         }
2573
2574         if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0) {
2575                 cred->min_dl_bandwidth_roaming = atoi(value);
2576                 return 0;
2577         }
2578
2579         if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0) {
2580                 cred->min_ul_bandwidth_roaming = atoi(value);
2581                 return 0;
2582         }
2583
2584         if (os_strcmp(var, "max_bss_load") == 0) {
2585                 cred->max_bss_load = atoi(value);
2586                 return 0;
2587         }
2588
2589         if (os_strcmp(var, "req_conn_capab") == 0)
2590                 return wpa_config_set_cred_req_conn_capab(cred, value);
2591
2592         if (os_strcmp(var, "ocsp") == 0) {
2593                 cred->ocsp = atoi(value);
2594                 return 0;
2595         }
2596
2597         if (os_strcmp(var, "sim_num") == 0) {
2598                 cred->sim_num = atoi(value);
2599                 return 0;
2600         }
2601
2602         val = wpa_config_parse_string(value, &len);
2603         if (val == NULL) {
2604                 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
2605                            "value '%s'.", line, var, value);
2606                 return -1;
2607         }
2608
2609         if (os_strcmp(var, "realm") == 0) {
2610                 os_free(cred->realm);
2611                 cred->realm = val;
2612                 return 0;
2613         }
2614
2615         if (os_strcmp(var, "username") == 0) {
2616                 str_clear_free(cred->username);
2617                 cred->username = val;
2618                 return 0;
2619         }
2620
2621         if (os_strcmp(var, "password") == 0) {
2622                 str_clear_free(cred->password);
2623                 cred->password = val;
2624                 cred->ext_password = 0;
2625                 return 0;
2626         }
2627
2628         if (os_strcmp(var, "ca_cert") == 0) {
2629                 os_free(cred->ca_cert);
2630                 cred->ca_cert = val;
2631                 return 0;
2632         }
2633
2634         if (os_strcmp(var, "client_cert") == 0) {
2635                 os_free(cred->client_cert);
2636                 cred->client_cert = val;
2637                 return 0;
2638         }
2639
2640         if (os_strcmp(var, "private_key") == 0) {
2641                 os_free(cred->private_key);
2642                 cred->private_key = val;
2643                 return 0;
2644         }
2645
2646         if (os_strcmp(var, "private_key_passwd") == 0) {
2647                 str_clear_free(cred->private_key_passwd);
2648                 cred->private_key_passwd = val;
2649                 return 0;
2650         }
2651
2652         if (os_strcmp(var, "imsi") == 0) {
2653                 os_free(cred->imsi);
2654                 cred->imsi = val;
2655                 return 0;
2656         }
2657
2658         if (os_strcmp(var, "milenage") == 0) {
2659                 str_clear_free(cred->milenage);
2660                 cred->milenage = val;
2661                 return 0;
2662         }
2663
2664         if (os_strcmp(var, "domain_suffix_match") == 0) {
2665                 os_free(cred->domain_suffix_match);
2666                 cred->domain_suffix_match = val;
2667                 return 0;
2668         }
2669
2670         if (os_strcmp(var, "domain") == 0) {
2671                 char **new_domain;
2672                 new_domain = os_realloc_array(cred->domain,
2673                                               cred->num_domain + 1,
2674                                               sizeof(char *));
2675                 if (new_domain == NULL) {
2676                         os_free(val);
2677                         return -1;
2678                 }
2679                 new_domain[cred->num_domain++] = val;
2680                 cred->domain = new_domain;
2681                 return 0;
2682         }
2683
2684         if (os_strcmp(var, "phase1") == 0) {
2685                 os_free(cred->phase1);
2686                 cred->phase1 = val;
2687                 return 0;
2688         }
2689
2690         if (os_strcmp(var, "phase2") == 0) {
2691                 os_free(cred->phase2);
2692                 cred->phase2 = val;
2693                 return 0;
2694         }
2695
2696         if (os_strcmp(var, "roaming_consortium") == 0) {
2697                 if (len < 3 || len > sizeof(cred->roaming_consortium)) {
2698                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2699                                    "roaming_consortium length %d (3..15 "
2700                                    "expected)", line, (int) len);
2701                         os_free(val);
2702                         return -1;
2703                 }
2704                 os_memcpy(cred->roaming_consortium, val, len);
2705                 cred->roaming_consortium_len = len;
2706                 os_free(val);
2707                 return 0;
2708         }
2709
2710         if (os_strcmp(var, "required_roaming_consortium") == 0) {
2711                 if (len < 3 || len > sizeof(cred->required_roaming_consortium))
2712                 {
2713                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2714                                    "required_roaming_consortium length %d "
2715                                    "(3..15 expected)", line, (int) len);
2716                         os_free(val);
2717                         return -1;
2718                 }
2719                 os_memcpy(cred->required_roaming_consortium, val, len);
2720                 cred->required_roaming_consortium_len = len;
2721                 os_free(val);
2722                 return 0;
2723         }
2724
2725         if (os_strcmp(var, "excluded_ssid") == 0) {
2726                 struct excluded_ssid *e;
2727
2728                 if (len > MAX_SSID_LEN) {
2729                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2730                                    "excluded_ssid length %d", line, (int) len);
2731                         os_free(val);
2732                         return -1;
2733                 }
2734
2735                 e = os_realloc_array(cred->excluded_ssid,
2736                                      cred->num_excluded_ssid + 1,
2737                                      sizeof(struct excluded_ssid));
2738                 if (e == NULL) {
2739                         os_free(val);
2740                         return -1;
2741                 }
2742                 cred->excluded_ssid = e;
2743
2744                 e = &cred->excluded_ssid[cred->num_excluded_ssid++];
2745                 os_memcpy(e->ssid, val, len);
2746                 e->ssid_len = len;
2747
2748                 os_free(val);
2749
2750                 return 0;
2751         }
2752
2753         if (os_strcmp(var, "roaming_partner") == 0) {
2754                 struct roaming_partner *p;
2755                 char *pos;
2756
2757                 p = os_realloc_array(cred->roaming_partner,
2758                                      cred->num_roaming_partner + 1,
2759                                      sizeof(struct roaming_partner));
2760                 if (p == NULL) {
2761                         os_free(val);
2762                         return -1;
2763                 }
2764                 cred->roaming_partner = p;
2765
2766                 p = &cred->roaming_partner[cred->num_roaming_partner];
2767
2768                 pos = os_strchr(val, ',');
2769                 if (pos == NULL) {
2770                         os_free(val);
2771                         return -1;
2772                 }
2773                 *pos++ = '\0';
2774                 if (pos - val - 1 >= (int) sizeof(p->fqdn)) {
2775                         os_free(val);
2776                         return -1;
2777                 }
2778                 os_memcpy(p->fqdn, val, pos - val);
2779
2780                 p->exact_match = atoi(pos);
2781
2782                 pos = os_strchr(pos, ',');
2783                 if (pos == NULL) {
2784                         os_free(val);
2785                         return -1;
2786                 }
2787                 *pos++ = '\0';
2788
2789                 p->priority = atoi(pos);
2790
2791                 pos = os_strchr(pos, ',');
2792                 if (pos == NULL) {
2793                         os_free(val);
2794                         return -1;
2795                 }
2796                 *pos++ = '\0';
2797
2798                 if (os_strlen(pos) >= sizeof(p->country)) {
2799                         os_free(val);
2800                         return -1;
2801                 }
2802                 os_memcpy(p->country, pos, os_strlen(pos) + 1);
2803
2804                 cred->num_roaming_partner++;
2805                 os_free(val);
2806
2807                 return 0;
2808         }
2809
2810         if (os_strcmp(var, "provisioning_sp") == 0) {
2811                 os_free(cred->provisioning_sp);
2812                 cred->provisioning_sp = val;
2813                 return 0;
2814         }
2815
2816         if (line) {
2817                 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
2818                            line, var);
2819         }
2820
2821         os_free(val);
2822
2823         return -1;
2824 }
2825
2826
2827 static char * alloc_int_str(int val)
2828 {
2829         char *buf;
2830
2831         buf = os_malloc(20);
2832         if (buf == NULL)
2833                 return NULL;
2834         os_snprintf(buf, 20, "%d", val);
2835         return buf;
2836 }
2837
2838
2839 static char * alloc_strdup(const char *str)
2840 {
2841         if (str == NULL)
2842                 return NULL;
2843         return os_strdup(str);
2844 }
2845
2846
2847 char * wpa_config_get_cred_no_key(struct wpa_cred *cred, const char *var)
2848 {
2849         if (os_strcmp(var, "temporary") == 0)
2850                 return alloc_int_str(cred->temporary);
2851
2852         if (os_strcmp(var, "priority") == 0)
2853                 return alloc_int_str(cred->priority);
2854
2855         if (os_strcmp(var, "sp_priority") == 0)
2856                 return alloc_int_str(cred->sp_priority);
2857
2858         if (os_strcmp(var, "pcsc") == 0)
2859                 return alloc_int_str(cred->pcsc);
2860
2861         if (os_strcmp(var, "eap") == 0) {
2862                 if (!cred->eap_method)
2863                         return NULL;
2864                 return alloc_strdup(eap_get_name(cred->eap_method[0].vendor,
2865                                                  cred->eap_method[0].method));
2866         }
2867
2868         if (os_strcmp(var, "update_identifier") == 0)
2869                 return alloc_int_str(cred->update_identifier);
2870
2871         if (os_strcmp(var, "min_dl_bandwidth_home") == 0)
2872                 return alloc_int_str(cred->min_dl_bandwidth_home);
2873
2874         if (os_strcmp(var, "min_ul_bandwidth_home") == 0)
2875                 return alloc_int_str(cred->min_ul_bandwidth_home);
2876
2877         if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0)
2878                 return alloc_int_str(cred->min_dl_bandwidth_roaming);
2879
2880         if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0)
2881                 return alloc_int_str(cred->min_ul_bandwidth_roaming);
2882
2883         if (os_strcmp(var, "max_bss_load") == 0)
2884                 return alloc_int_str(cred->max_bss_load);
2885
2886         if (os_strcmp(var, "req_conn_capab") == 0) {
2887                 unsigned int i;
2888                 char *buf, *end, *pos;
2889                 int ret;
2890
2891                 if (!cred->num_req_conn_capab)
2892                         return NULL;
2893
2894                 buf = os_malloc(4000);
2895                 if (buf == NULL)
2896                         return NULL;
2897                 pos = buf;
2898                 end = pos + 4000;
2899                 for (i = 0; i < cred->num_req_conn_capab; i++) {
2900                         int *ports;
2901
2902                         ret = os_snprintf(pos, end - pos, "%s%u",
2903                                           i > 0 ? "\n" : "",
2904                                           cred->req_conn_capab_proto[i]);
2905                         if (ret < 0 || ret >= end - pos)
2906                                 return buf;
2907                         pos += ret;
2908
2909                         ports = cred->req_conn_capab_port[i];
2910                         if (ports) {
2911                                 int j;
2912                                 for (j = 0; ports[j] != -1; j++) {
2913                                         ret = os_snprintf(pos, end - pos,
2914                                                           "%s%d",
2915                                                           j > 0 ? "," : ":",
2916                                                           ports[j]);
2917                                         if (ret < 0 || ret >= end - pos)
2918                                                 return buf;
2919                                         pos += ret;
2920                                 }
2921                         }
2922                 }
2923
2924                 return buf;
2925         }
2926
2927         if (os_strcmp(var, "ocsp") == 0)
2928                 return alloc_int_str(cred->ocsp);
2929
2930         if (os_strcmp(var, "realm") == 0)
2931                 return alloc_strdup(cred->realm);
2932
2933         if (os_strcmp(var, "username") == 0)
2934                 return alloc_strdup(cred->username);
2935
2936         if (os_strcmp(var, "password") == 0) {
2937                 if (!cred->password)
2938                         return NULL;
2939                 return alloc_strdup("*");
2940         }
2941
2942         if (os_strcmp(var, "ca_cert") == 0)
2943                 return alloc_strdup(cred->ca_cert);
2944
2945         if (os_strcmp(var, "client_cert") == 0)
2946                 return alloc_strdup(cred->client_cert);
2947
2948         if (os_strcmp(var, "private_key") == 0)
2949                 return alloc_strdup(cred->private_key);
2950
2951         if (os_strcmp(var, "private_key_passwd") == 0) {
2952                 if (!cred->private_key_passwd)
2953                         return NULL;
2954                 return alloc_strdup("*");
2955         }
2956
2957         if (os_strcmp(var, "imsi") == 0)
2958                 return alloc_strdup(cred->imsi);
2959
2960         if (os_strcmp(var, "milenage") == 0) {
2961                 if (!(cred->milenage))
2962                         return NULL;
2963                 return alloc_strdup("*");
2964         }
2965
2966         if (os_strcmp(var, "domain_suffix_match") == 0)
2967                 return alloc_strdup(cred->domain_suffix_match);
2968
2969         if (os_strcmp(var, "domain") == 0) {
2970                 unsigned int i;
2971                 char *buf, *end, *pos;
2972                 int ret;
2973
2974                 if (!cred->num_domain)
2975                         return NULL;
2976
2977                 buf = os_malloc(4000);
2978                 if (buf == NULL)
2979                         return NULL;
2980                 pos = buf;
2981                 end = pos + 4000;
2982
2983                 for (i = 0; i < cred->num_domain; i++) {
2984                         ret = os_snprintf(pos, end - pos, "%s%s",
2985                                           i > 0 ? "\n" : "", cred->domain[i]);
2986                         if (ret < 0 || ret >= end - pos)
2987                                 return buf;
2988                         pos += ret;
2989                 }
2990
2991                 return buf;
2992         }
2993
2994         if (os_strcmp(var, "phase1") == 0)
2995                 return alloc_strdup(cred->phase1);
2996
2997         if (os_strcmp(var, "phase2") == 0)
2998                 return alloc_strdup(cred->phase2);
2999
3000         if (os_strcmp(var, "roaming_consortium") == 0) {
3001                 size_t buflen;
3002                 char *buf;
3003
3004                 if (!cred->roaming_consortium_len)
3005                         return NULL;
3006                 buflen = cred->roaming_consortium_len * 2 + 1;
3007                 buf = os_malloc(buflen);
3008                 if (buf == NULL)
3009                         return NULL;
3010                 wpa_snprintf_hex(buf, buflen, cred->roaming_consortium,
3011                                  cred->roaming_consortium_len);
3012                 return buf;
3013         }
3014
3015         if (os_strcmp(var, "required_roaming_consortium") == 0) {
3016                 size_t buflen;
3017                 char *buf;
3018
3019                 if (!cred->required_roaming_consortium_len)
3020                         return NULL;
3021                 buflen = cred->required_roaming_consortium_len * 2 + 1;
3022                 buf = os_malloc(buflen);
3023                 if (buf == NULL)
3024                         return NULL;
3025                 wpa_snprintf_hex(buf, buflen, cred->required_roaming_consortium,
3026                                  cred->required_roaming_consortium_len);
3027                 return buf;
3028         }
3029
3030         if (os_strcmp(var, "excluded_ssid") == 0) {
3031                 unsigned int i;
3032                 char *buf, *end, *pos;
3033
3034                 if (!cred->num_excluded_ssid)
3035                         return NULL;
3036
3037                 buf = os_malloc(4000);
3038                 if (buf == NULL)
3039                         return NULL;
3040                 pos = buf;
3041                 end = pos + 4000;
3042
3043                 for (i = 0; i < cred->num_excluded_ssid; i++) {
3044                         struct excluded_ssid *e;
3045                         int ret;
3046
3047                         e = &cred->excluded_ssid[i];
3048                         ret = os_snprintf(pos, end - pos, "%s%s",
3049                                           i > 0 ? "\n" : "",
3050                                           wpa_ssid_txt(e->ssid, e->ssid_len));
3051                         if (ret < 0 || ret >= end - pos)
3052                                 return buf;
3053                         pos += ret;
3054                 }
3055
3056                 return buf;
3057         }
3058
3059         if (os_strcmp(var, "roaming_partner") == 0) {
3060                 unsigned int i;
3061                 char *buf, *end, *pos;
3062
3063                 if (!cred->num_roaming_partner)
3064                         return NULL;
3065
3066                 buf = os_malloc(4000);
3067                 if (buf == NULL)
3068                         return NULL;
3069                 pos = buf;
3070                 end = pos + 4000;
3071
3072                 for (i = 0; i < cred->num_roaming_partner; i++) {
3073                         struct roaming_partner *p;
3074                         int ret;
3075
3076                         p = &cred->roaming_partner[i];
3077                         ret = os_snprintf(pos, end - pos, "%s%s,%d,%u,%s",
3078                                           i > 0 ? "\n" : "",
3079                                           p->fqdn, p->exact_match, p->priority,
3080                                           p->country);
3081                         if (ret < 0 || ret >= end - pos)
3082                                 return buf;
3083                         pos += ret;
3084                 }
3085
3086                 return buf;
3087         }
3088
3089         if (os_strcmp(var, "provisioning_sp") == 0)
3090                 return alloc_strdup(cred->provisioning_sp);
3091
3092         return NULL;
3093 }
3094
3095
3096 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
3097 {
3098         struct wpa_cred *cred;
3099
3100         cred = config->cred;
3101         while (cred) {
3102                 if (id == cred->id)
3103                         break;
3104                 cred = cred->next;
3105         }
3106
3107         return cred;
3108 }
3109
3110
3111 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
3112 {
3113         int id;
3114         struct wpa_cred *cred, *last = NULL;
3115
3116         id = -1;
3117         cred = config->cred;
3118         while (cred) {
3119                 if (cred->id > id)
3120                         id = cred->id;
3121                 last = cred;
3122                 cred = cred->next;
3123         }
3124         id++;
3125
3126         cred = os_zalloc(sizeof(*cred));
3127         if (cred == NULL)
3128                 return NULL;
3129         cred->id = id;
3130         cred->sim_num = DEFAULT_USER_SELECTED_SIM;
3131         if (last)
3132                 last->next = cred;
3133         else
3134                 config->cred = cred;
3135
3136         return cred;
3137 }
3138
3139
3140 int wpa_config_remove_cred(struct wpa_config *config, int id)
3141 {
3142         struct wpa_cred *cred, *prev = NULL;
3143
3144         cred = config->cred;
3145         while (cred) {
3146                 if (id == cred->id)
3147                         break;
3148                 prev = cred;
3149                 cred = cred->next;
3150         }
3151
3152         if (cred == NULL)
3153                 return -1;
3154
3155         if (prev)
3156                 prev->next = cred->next;
3157         else
3158                 config->cred = cred->next;
3159
3160         wpa_config_free_cred(cred);
3161         return 0;
3162 }
3163
3164
3165 #ifndef CONFIG_NO_CONFIG_BLOBS
3166 /**
3167  * wpa_config_get_blob - Get a named configuration blob
3168  * @config: Configuration data from wpa_config_read()
3169  * @name: Name of the blob
3170  * Returns: Pointer to blob data or %NULL if not found
3171  */
3172 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
3173                                                    const char *name)
3174 {
3175         struct wpa_config_blob *blob = config->blobs;
3176
3177         while (blob) {
3178                 if (os_strcmp(blob->name, name) == 0)
3179                         return blob;
3180                 blob = blob->next;
3181         }
3182         return NULL;
3183 }
3184
3185
3186 /**
3187  * wpa_config_set_blob - Set or add a named configuration blob
3188  * @config: Configuration data from wpa_config_read()
3189  * @blob: New value for the blob
3190  *
3191  * Adds a new configuration blob or replaces the current value of an existing
3192  * blob.
3193  */
3194 void wpa_config_set_blob(struct wpa_config *config,
3195                          struct wpa_config_blob *blob)
3196 {
3197         wpa_config_remove_blob(config, blob->name);
3198         blob->next = config->blobs;
3199         config->blobs = blob;
3200 }
3201
3202
3203 /**
3204  * wpa_config_free_blob - Free blob data
3205  * @blob: Pointer to blob to be freed
3206  */
3207 void wpa_config_free_blob(struct wpa_config_blob *blob)
3208 {
3209         if (blob) {
3210                 os_free(blob->name);
3211                 bin_clear_free(blob->data, blob->len);
3212                 os_free(blob);
3213         }
3214 }
3215
3216
3217 /**
3218  * wpa_config_remove_blob - Remove a named configuration blob
3219  * @config: Configuration data from wpa_config_read()
3220  * @name: Name of the blob to remove
3221  * Returns: 0 if blob was removed or -1 if blob was not found
3222  */
3223 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
3224 {
3225         struct wpa_config_blob *pos = config->blobs, *prev = NULL;
3226
3227         while (pos) {
3228                 if (os_strcmp(pos->name, name) == 0) {
3229                         if (prev)
3230                                 prev->next = pos->next;
3231                         else
3232                                 config->blobs = pos->next;
3233                         wpa_config_free_blob(pos);
3234                         return 0;
3235                 }
3236                 prev = pos;
3237                 pos = pos->next;
3238         }
3239
3240         return -1;
3241 }
3242 #endif /* CONFIG_NO_CONFIG_BLOBS */
3243
3244
3245 /**
3246  * wpa_config_alloc_empty - Allocate an empty configuration
3247  * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
3248  * socket
3249  * @driver_param: Driver parameters
3250  * Returns: Pointer to allocated configuration data or %NULL on failure
3251  */
3252 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
3253                                            const char *driver_param)
3254 {
3255         struct wpa_config *config;
3256         const int aCWmin = 4, aCWmax = 10;
3257         const struct hostapd_wmm_ac_params ac_bk =
3258                 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
3259         const struct hostapd_wmm_ac_params ac_be =
3260                 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
3261         const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
3262                 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
3263         const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
3264                 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
3265
3266         config = os_zalloc(sizeof(*config));
3267         if (config == NULL)
3268                 return NULL;
3269         config->eapol_version = DEFAULT_EAPOL_VERSION;
3270         config->ap_scan = DEFAULT_AP_SCAN;
3271         config->fast_reauth = DEFAULT_FAST_REAUTH;
3272         config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
3273         config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
3274         config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
3275         config->p2p_optimize_listen_chan = DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN;
3276         config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
3277         config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
3278         config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
3279         config->max_num_sta = DEFAULT_MAX_NUM_STA;
3280         config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
3281         config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
3282         config->wmm_ac_params[0] = ac_be;
3283         config->wmm_ac_params[1] = ac_bk;
3284         config->wmm_ac_params[2] = ac_vi;
3285         config->wmm_ac_params[3] = ac_vo;
3286         config->p2p_search_delay = DEFAULT_P2P_SEARCH_DELAY;
3287
3288         if (ctrl_interface)
3289                 config->ctrl_interface = os_strdup(ctrl_interface);
3290         if (driver_param)
3291                 config->driver_param = os_strdup(driver_param);
3292
3293         return config;
3294 }
3295
3296
3297 #ifndef CONFIG_NO_STDOUT_DEBUG
3298 /**
3299  * wpa_config_debug_dump_networks - Debug dump of configured networks
3300  * @config: Configuration data from wpa_config_read()
3301  */
3302 void wpa_config_debug_dump_networks(struct wpa_config *config)
3303 {
3304         int prio;
3305         struct wpa_ssid *ssid;
3306
3307         for (prio = 0; prio < config->num_prio; prio++) {
3308                 ssid = config->pssid[prio];
3309                 wpa_printf(MSG_DEBUG, "Priority group %d",
3310                            ssid->priority);
3311                 while (ssid) {
3312                         wpa_printf(MSG_DEBUG, "   id=%d ssid='%s'",
3313                                    ssid->id,
3314                                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3315                         ssid = ssid->pnext;
3316                 }
3317         }
3318 }
3319 #endif /* CONFIG_NO_STDOUT_DEBUG */
3320
3321
3322 struct global_parse_data {
3323         char *name;
3324         int (*parser)(const struct global_parse_data *data,
3325                       struct wpa_config *config, int line, const char *value);
3326         void *param1, *param2, *param3;
3327         unsigned int changed_flag;
3328 };
3329
3330
3331 static int wpa_global_config_parse_int(const struct global_parse_data *data,
3332                                        struct wpa_config *config, int line,
3333                                        const char *pos)
3334 {
3335         int val, *dst;
3336         char *end;
3337
3338         dst = (int *) (((u8 *) config) + (long) data->param1);
3339         val = strtol(pos, &end, 0);
3340         if (*end) {
3341                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
3342                            line, pos);
3343                 return -1;
3344         }
3345         *dst = val;
3346
3347         wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
3348
3349         if (data->param2 && *dst < (long) data->param2) {
3350                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
3351                            "min_value=%ld)", line, data->name, *dst,
3352                            (long) data->param2);
3353                 *dst = (long) data->param2;
3354                 return -1;
3355         }
3356
3357         if (data->param3 && *dst > (long) data->param3) {
3358                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
3359                            "max_value=%ld)", line, data->name, *dst,
3360                            (long) data->param3);
3361                 *dst = (long) data->param3;
3362                 return -1;
3363         }
3364
3365         return 0;
3366 }
3367
3368
3369 static int wpa_global_config_parse_str(const struct global_parse_data *data,
3370                                        struct wpa_config *config, int line,
3371                                        const char *pos)
3372 {
3373         size_t len;
3374         char **dst, *tmp;
3375
3376         len = os_strlen(pos);
3377         if (data->param2 && len < (size_t) data->param2) {
3378                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
3379                            "min_len=%ld)", line, data->name,
3380                            (unsigned long) len, (long) data->param2);
3381                 return -1;
3382         }
3383
3384         if (data->param3 && len > (size_t) data->param3) {
3385                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
3386                            "max_len=%ld)", line, data->name,
3387                            (unsigned long) len, (long) data->param3);
3388                 return -1;
3389         }
3390
3391         tmp = os_strdup(pos);
3392         if (tmp == NULL)
3393                 return -1;
3394
3395         dst = (char **) (((u8 *) config) + (long) data->param1);
3396         os_free(*dst);
3397         *dst = tmp;
3398         wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
3399
3400         return 0;
3401 }
3402
3403
3404 static int wpa_config_process_bgscan(const struct global_parse_data *data,
3405                                      struct wpa_config *config, int line,
3406                                      const char *pos)
3407 {
3408         size_t len;
3409         char *tmp;
3410         int res;
3411
3412         tmp = wpa_config_parse_string(pos, &len);
3413         if (tmp == NULL) {
3414                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s",
3415                            line, data->name);
3416                 return -1;
3417         }
3418
3419         res = wpa_global_config_parse_str(data, config, line, tmp);
3420         os_free(tmp);
3421         return res;
3422 }
3423
3424
3425 static int wpa_global_config_parse_bin(const struct global_parse_data *data,
3426                                        struct wpa_config *config, int line,
3427                                        const char *pos)
3428 {
3429         size_t len;
3430         struct wpabuf **dst, *tmp;
3431
3432         len = os_strlen(pos);
3433         if (len & 0x01)
3434                 return -1;
3435
3436         tmp = wpabuf_alloc(len / 2);
3437         if (tmp == NULL)
3438                 return -1;
3439
3440         if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) {
3441                 wpabuf_free(tmp);
3442                 return -1;
3443         }
3444
3445         dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
3446         wpabuf_free(*dst);
3447         *dst = tmp;
3448         wpa_printf(MSG_DEBUG, "%s", data->name);
3449
3450         return 0;
3451 }
3452
3453
3454 static int wpa_config_process_freq_list(const struct global_parse_data *data,
3455                                         struct wpa_config *config, int line,
3456                                         const char *value)
3457 {
3458         int *freqs;
3459
3460         freqs = wpa_config_parse_int_array(value);
3461         if (freqs == NULL)
3462                 return -1;
3463         if (freqs[0] == 0) {
3464                 os_free(freqs);
3465                 freqs = NULL;
3466         }
3467         os_free(config->freq_list);
3468         config->freq_list = freqs;
3469         return 0;
3470 }
3471
3472
3473 #ifdef CONFIG_P2P
3474 static int wpa_global_config_parse_ipv4(const struct global_parse_data *data,
3475                                         struct wpa_config *config, int line,
3476                                         const char *pos)
3477 {
3478         u32 *dst;
3479         struct hostapd_ip_addr addr;
3480
3481         if (hostapd_parse_ip_addr(pos, &addr) < 0)
3482                 return -1;
3483         if (addr.af != AF_INET)
3484                 return -1;
3485
3486         dst = (u32 *) (((u8 *) config) + (long) data->param1);
3487         os_memcpy(dst, &addr.u.v4.s_addr, 4);
3488         wpa_printf(MSG_DEBUG, "%s = 0x%x", data->name,
3489                    WPA_GET_BE32((u8 *) dst));
3490
3491         return 0;
3492 }
3493 #endif /* CONFIG_P2P */
3494
3495
3496 static int wpa_config_process_country(const struct global_parse_data *data,
3497                                       struct wpa_config *config, int line,
3498                                       const char *pos)
3499 {
3500         if (!pos[0] || !pos[1]) {
3501                 wpa_printf(MSG_DEBUG, "Invalid country set");
3502                 return -1;
3503         }
3504         config->country[0] = pos[0];
3505         config->country[1] = pos[1];
3506         wpa_printf(MSG_DEBUG, "country='%c%c'",
3507                    config->country[0], config->country[1]);
3508         return 0;
3509 }
3510
3511
3512 static int wpa_config_process_load_dynamic_eap(
3513         const struct global_parse_data *data, struct wpa_config *config,
3514         int line, const char *so)
3515 {
3516         int ret;
3517         wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
3518         ret = eap_peer_method_load(so);
3519         if (ret == -2) {
3520                 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
3521                            "reloading.");
3522         } else if (ret) {
3523                 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
3524                            "method '%s'.", line, so);
3525                 return -1;
3526         }
3527
3528         return 0;
3529 }
3530
3531
3532 #ifdef CONFIG_WPS
3533
3534 static int wpa_config_process_uuid(const struct global_parse_data *data,
3535                                    struct wpa_config *config, int line,
3536                                    const char *pos)
3537 {
3538         char buf[40];
3539         if (uuid_str2bin(pos, config->uuid)) {
3540                 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
3541                 return -1;
3542         }
3543         uuid_bin2str(config->uuid, buf, sizeof(buf));
3544         wpa_printf(MSG_DEBUG, "uuid=%s", buf);
3545         return 0;
3546 }
3547
3548
3549 static int wpa_config_process_device_type(
3550         const struct global_parse_data *data,
3551         struct wpa_config *config, int line, const char *pos)
3552 {
3553         return wps_dev_type_str2bin(pos, config->device_type);
3554 }
3555
3556
3557 static int wpa_config_process_os_version(const struct global_parse_data *data,
3558                                          struct wpa_config *config, int line,
3559                                          const char *pos)
3560 {
3561         if (hexstr2bin(pos, config->os_version, 4)) {
3562                 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
3563                 return -1;
3564         }
3565         wpa_printf(MSG_DEBUG, "os_version=%08x",
3566                    WPA_GET_BE32(config->os_version));
3567         return 0;
3568 }
3569
3570
3571 static int wpa_config_process_wps_vendor_ext_m1(
3572         const struct global_parse_data *data,
3573         struct wpa_config *config, int line, const char *pos)
3574 {
3575         struct wpabuf *tmp;
3576         int len = os_strlen(pos) / 2;
3577         u8 *p;
3578
3579         if (!len) {
3580                 wpa_printf(MSG_ERROR, "Line %d: "
3581                            "invalid wps_vendor_ext_m1", line);
3582                 return -1;
3583         }
3584
3585         tmp = wpabuf_alloc(len);
3586         if (tmp) {
3587                 p = wpabuf_put(tmp, len);
3588
3589                 if (hexstr2bin(pos, p, len)) {
3590                         wpa_printf(MSG_ERROR, "Line %d: "
3591                                    "invalid wps_vendor_ext_m1", line);
3592                         wpabuf_free(tmp);
3593                         return -1;
3594                 }
3595
3596                 wpabuf_free(config->wps_vendor_ext_m1);
3597                 config->wps_vendor_ext_m1 = tmp;
3598         } else {
3599                 wpa_printf(MSG_ERROR, "Can not allocate "
3600                            "memory for wps_vendor_ext_m1");
3601                 return -1;
3602         }
3603
3604         return 0;
3605 }
3606
3607 #endif /* CONFIG_WPS */
3608
3609 #ifdef CONFIG_P2P
3610 static int wpa_config_process_sec_device_type(
3611         const struct global_parse_data *data,
3612         struct wpa_config *config, int line, const char *pos)
3613 {
3614         int idx;
3615
3616         if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
3617                 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
3618                            "items", line);
3619                 return -1;
3620         }
3621
3622         idx = config->num_sec_device_types;
3623
3624         if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
3625                 return -1;
3626
3627         config->num_sec_device_types++;
3628         return 0;
3629 }
3630
3631
3632 static int wpa_config_process_p2p_pref_chan(
3633         const struct global_parse_data *data,
3634         struct wpa_config *config, int line, const char *pos)
3635 {
3636         struct p2p_channel *pref = NULL, *n;
3637         unsigned int num = 0;
3638         const char *pos2;
3639         u8 op_class, chan;
3640
3641         /* format: class:chan,class:chan,... */
3642
3643         while (*pos) {
3644                 op_class = atoi(pos);
3645                 pos2 = os_strchr(pos, ':');
3646                 if (pos2 == NULL)
3647                         goto fail;
3648                 pos2++;
3649                 chan = atoi(pos2);
3650
3651                 n = os_realloc_array(pref, num + 1,
3652                                      sizeof(struct p2p_channel));
3653                 if (n == NULL)
3654                         goto fail;
3655                 pref = n;
3656                 pref[num].op_class = op_class;
3657                 pref[num].chan = chan;
3658                 num++;
3659
3660                 pos = os_strchr(pos2, ',');
3661                 if (pos == NULL)
3662                         break;
3663                 pos++;
3664         }
3665
3666         os_free(config->p2p_pref_chan);
3667         config->p2p_pref_chan = pref;
3668         config->num_p2p_pref_chan = num;
3669         wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
3670                     (u8 *) config->p2p_pref_chan,
3671                     config->num_p2p_pref_chan * sizeof(struct p2p_channel));
3672
3673         return 0;
3674
3675 fail:
3676         os_free(pref);
3677         wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
3678         return -1;
3679 }
3680
3681
3682 static int wpa_config_process_p2p_no_go_freq(
3683         const struct global_parse_data *data,
3684         struct wpa_config *config, int line, const char *pos)
3685 {
3686         int ret;
3687
3688         ret = freq_range_list_parse(&config->p2p_no_go_freq, pos);
3689         if (ret < 0) {
3690                 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_no_go_freq", line);
3691                 return -1;
3692         }
3693
3694         wpa_printf(MSG_DEBUG, "P2P: p2p_no_go_freq with %u items",
3695                    config->p2p_no_go_freq.num);
3696
3697         return 0;
3698 }
3699
3700 #endif /* CONFIG_P2P */
3701
3702
3703 static int wpa_config_process_hessid(
3704         const struct global_parse_data *data,
3705         struct wpa_config *config, int line, const char *pos)
3706 {
3707         if (hwaddr_aton2(pos, config->hessid) < 0) {
3708                 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
3709                            line, pos);
3710                 return -1;
3711         }
3712
3713         return 0;
3714 }
3715
3716
3717 static int wpa_config_process_sae_groups(
3718         const struct global_parse_data *data,
3719         struct wpa_config *config, int line, const char *pos)
3720 {
3721         int *groups = wpa_config_parse_int_array(pos);
3722         if (groups == NULL) {
3723                 wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'",
3724                            line, pos);
3725                 return -1;
3726         }
3727
3728         os_free(config->sae_groups);
3729         config->sae_groups = groups;
3730
3731         return 0;
3732 }
3733
3734
3735 static int wpa_config_process_ap_vendor_elements(
3736         const struct global_parse_data *data,
3737         struct wpa_config *config, int line, const char *pos)
3738 {
3739         struct wpabuf *tmp;
3740         int len = os_strlen(pos) / 2;
3741         u8 *p;
3742
3743         if (!len) {
3744                 wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements",
3745                            line);
3746                 return -1;
3747         }
3748
3749         tmp = wpabuf_alloc(len);
3750         if (tmp) {
3751                 p = wpabuf_put(tmp, len);
3752
3753                 if (hexstr2bin(pos, p, len)) {
3754                         wpa_printf(MSG_ERROR, "Line %d: invalid "
3755                                    "ap_vendor_elements", line);
3756                         wpabuf_free(tmp);
3757                         return -1;
3758                 }
3759
3760                 wpabuf_free(config->ap_vendor_elements);
3761                 config->ap_vendor_elements = tmp;
3762         } else {
3763                 wpa_printf(MSG_ERROR, "Cannot allocate memory for "
3764                            "ap_vendor_elements");
3765                 return -1;
3766         }
3767
3768         return 0;
3769 }
3770
3771
3772 #ifdef CONFIG_CTRL_IFACE
3773 static int wpa_config_process_no_ctrl_interface(
3774         const struct global_parse_data *data,
3775         struct wpa_config *config, int line, const char *pos)
3776 {
3777         wpa_printf(MSG_DEBUG, "no_ctrl_interface -> ctrl_interface=NULL");
3778         os_free(config->ctrl_interface);
3779         config->ctrl_interface = NULL;
3780         return 0;
3781 }
3782 #endif /* CONFIG_CTRL_IFACE */
3783
3784
3785 #ifdef OFFSET
3786 #undef OFFSET
3787 #endif /* OFFSET */
3788 /* OFFSET: Get offset of a variable within the wpa_config structure */
3789 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
3790
3791 #define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL
3792 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL
3793 #define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f)
3794 #define INT(f) _INT(f), NULL, NULL
3795 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
3796 #define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f)
3797 #define STR(f) _STR(f), NULL, NULL
3798 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
3799 #define BIN(f) #f, wpa_global_config_parse_bin, OFFSET(f), NULL, NULL
3800 #define IPV4(f) #f, wpa_global_config_parse_ipv4, OFFSET(f), NULL, NULL
3801
3802 static const struct global_parse_data global_fields[] = {
3803 #ifdef CONFIG_CTRL_IFACE
3804         { STR(ctrl_interface), 0 },
3805         { FUNC_NO_VAR(no_ctrl_interface), 0 },
3806         { STR(ctrl_interface_group), 0 } /* deprecated */,
3807 #endif /* CONFIG_CTRL_IFACE */
3808 #ifdef CONFIG_MACSEC
3809         { INT_RANGE(eapol_version, 1, 3), 0 },
3810 #else /* CONFIG_MACSEC */
3811         { INT_RANGE(eapol_version, 1, 2), 0 },
3812 #endif /* CONFIG_MACSEC */
3813         { INT(ap_scan), 0 },
3814         { FUNC(bgscan), 0 },
3815         { INT(disable_scan_offload), 0 },
3816         { INT(fast_reauth), 0 },
3817         { STR(opensc_engine_path), 0 },
3818         { STR(pkcs11_engine_path), 0 },
3819         { STR(pkcs11_module_path), 0 },
3820         { STR(pcsc_reader), 0 },
3821         { STR(pcsc_pin), 0 },
3822         { INT(external_sim), 0 },
3823         { STR(driver_param), 0 },
3824         { INT(dot11RSNAConfigPMKLifetime), 0 },
3825         { INT(dot11RSNAConfigPMKReauthThreshold), 0 },
3826         { INT(dot11RSNAConfigSATimeout), 0 },
3827 #ifndef CONFIG_NO_CONFIG_WRITE
3828         { INT(update_config), 0 },
3829 #endif /* CONFIG_NO_CONFIG_WRITE */
3830         { FUNC_NO_VAR(load_dynamic_eap), 0 },
3831 #ifdef CONFIG_WPS
3832         { FUNC(uuid), CFG_CHANGED_UUID },
3833         { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME },
3834         { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
3835         { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
3836         { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
3837         { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
3838         { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
3839         { FUNC(os_version), CFG_CHANGED_OS_VERSION },
3840         { STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
3841         { INT_RANGE(wps_cred_processing, 0, 2), 0 },
3842         { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
3843 #endif /* CONFIG_WPS */
3844 #ifdef CONFIG_P2P
3845         { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
3846         { INT(p2p_listen_reg_class), 0 },
3847         { INT(p2p_listen_channel), 0 },
3848         { INT(p2p_oper_reg_class), CFG_CHANGED_P2P_OPER_CHANNEL },
3849         { INT(p2p_oper_channel), CFG_CHANGED_P2P_OPER_CHANNEL },
3850         { INT_RANGE(p2p_go_intent, 0, 15), 0 },
3851         { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
3852         { INT_RANGE(persistent_reconnect, 0, 1), 0 },
3853         { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
3854         { INT(p2p_group_idle), 0 },
3855         { INT_RANGE(p2p_passphrase_len, 8, 63),
3856           CFG_CHANGED_P2P_PASSPHRASE_LEN },
3857         { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
3858         { FUNC(p2p_no_go_freq), CFG_CHANGED_P2P_PREF_CHAN },
3859         { INT_RANGE(p2p_add_cli_chan, 0, 1), 0 },
3860         { INT_RANGE(p2p_optimize_listen_chan, 0, 1), 0 },
3861         { INT(p2p_go_ht40), 0 },
3862         { INT(p2p_go_vht), 0 },
3863         { INT(p2p_disabled), 0 },
3864         { INT(p2p_no_group_iface), 0 },
3865         { INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 },
3866         { IPV4(ip_addr_go), 0 },
3867         { IPV4(ip_addr_mask), 0 },
3868         { IPV4(ip_addr_start), 0 },
3869         { IPV4(ip_addr_end), 0 },
3870 #endif /* CONFIG_P2P */
3871         { FUNC(country), CFG_CHANGED_COUNTRY },
3872         { INT(bss_max_count), 0 },
3873         { INT(bss_expiration_age), 0 },
3874         { INT(bss_expiration_scan_count), 0 },
3875         { INT_RANGE(filter_ssids, 0, 1), 0 },
3876         { INT_RANGE(filter_rssi, -100, 0), 0 },
3877         { INT(max_num_sta), 0 },
3878         { INT_RANGE(disassoc_low_ack, 0, 1), 0 },
3879 #ifdef CONFIG_HS20
3880         { INT_RANGE(hs20, 0, 1), 0 },
3881 #endif /* CONFIG_HS20 */
3882         { INT_RANGE(interworking, 0, 1), 0 },
3883         { FUNC(hessid), 0 },
3884         { INT_RANGE(access_network_type, 0, 15), 0 },
3885         { INT_RANGE(pbc_in_m1, 0, 1), 0 },
3886         { STR(autoscan), 0 },
3887         { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff),
3888           CFG_CHANGED_NFC_PASSWORD_TOKEN },
3889         { BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3890         { BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3891         { BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN },
3892         { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
3893         { INT(p2p_go_max_inactivity), 0 },
3894         { INT_RANGE(auto_interworking, 0, 1), 0 },
3895         { INT(okc), 0 },
3896         { INT(pmf), 0 },
3897         { FUNC(sae_groups), 0 },
3898         { INT(dtim_period), 0 },
3899         { INT(beacon_int), 0 },
3900         { FUNC(ap_vendor_elements), 0 },
3901         { INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
3902         { FUNC(freq_list), 0 },
3903         { INT(scan_cur_freq), 0 },
3904         { INT(sched_scan_interval), 0 },
3905         { INT(tdls_external_control), 0},
3906         { STR(osu_dir), 0 },
3907         { STR(wowlan_triggers), 0 },
3908         { INT(p2p_search_delay), 0},
3909 };
3910
3911 #undef FUNC
3912 #undef _INT
3913 #undef INT
3914 #undef INT_RANGE
3915 #undef _STR
3916 #undef STR
3917 #undef STR_RANGE
3918 #undef BIN
3919 #undef IPV4
3920 #define NUM_GLOBAL_FIELDS ARRAY_SIZE(global_fields)
3921
3922
3923 int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
3924 {
3925         size_t i;
3926         int ret = 0;
3927
3928         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
3929                 const struct global_parse_data *field = &global_fields[i];
3930                 size_t flen = os_strlen(field->name);
3931                 if (os_strncmp(pos, field->name, flen) != 0 ||
3932                     pos[flen] != '=')
3933                         continue;
3934
3935                 if (field->parser(field, config, line, pos + flen + 1)) {
3936                         wpa_printf(MSG_ERROR, "Line %d: failed to "
3937                                    "parse '%s'.", line, pos);
3938                         ret = -1;
3939                 }
3940                 if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN)
3941                         config->wps_nfc_pw_from_config = 1;
3942                 config->changed_parameters |= field->changed_flag;
3943                 break;
3944         }
3945         if (i == NUM_GLOBAL_FIELDS) {
3946 #ifdef CONFIG_AP
3947                 if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
3948                         char *tmp = os_strchr(pos, '=');
3949                         if (tmp == NULL) {
3950                                 if (line < 0)
3951                                         return -1;
3952                                 wpa_printf(MSG_ERROR, "Line %d: invalid line "
3953                                            "'%s'", line, pos);
3954                                 return -1;
3955                         }
3956                         *tmp++ = '\0';
3957                         if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
3958                                                   tmp)) {
3959                                 wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
3960                                            "AC item", line);
3961                                 return -1;
3962                         }
3963                 }
3964 #endif /* CONFIG_AP */
3965                 if (line < 0)
3966                         return -1;
3967                 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
3968                            line, pos);
3969                 ret = -1;
3970         }
3971
3972         return ret;
3973 }