wpa_supplicant/config.c

   1 /*
   2  * WPA Supplicant / Configuration parser and common functions
   3  * Copyright (c) 2003-2015, 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 "fst/fst.h"
  19 #include "config.h"
  20
  21
  22 #if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
  23 #define NO_CONFIG_WRITE
  24 #endif
  25
  26 /*
  27  * Structure for network configuration parsing. This data is used to implement
  28  * a generic parser for each network block variable. The table of configuration
  29  * variables is defined below in this file (ssid_fields[]).
  30  */
  31 struct parse_data {
  32         /* Configuration variable name */
  33         char *name;
  34
  35         /* Parser function for this variable */
  36         int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
  37                       int line, const char *value);
  38
  39 #ifndef NO_CONFIG_WRITE
  40         /* Writer function (i.e., to get the variable in text format from
  41          * internal presentation). */
  42         char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
  43 #endif /* NO_CONFIG_WRITE */
  44
  45         /* Variable specific parameters for the parser. */
  46         void *param1, *param2, *param3, *param4;
  47
  48         /* 0 = this variable can be included in debug output and ctrl_iface
  49          * 1 = this variable contains key/private data and it must not be
  50          *     included in debug output unless explicitly requested. In
  51          *     addition, this variable will not be readable through the
  52          *     ctrl_iface.
  53          */
  54         int key_data;
  55 };
  56
  57
  58 static int wpa_config_parse_str(const struct parse_data *data,
  59                                 struct wpa_ssid *ssid,
  60                                 int line, const char *value)
  61 {
  62         size_t res_len, *dst_len;
  63         char **dst, *tmp;
  64
  65         if (os_strcmp(value, "NULL") == 0) {
  66                 wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
  67                            data->name);
  68                 tmp = NULL;
  69                 res_len = 0;
  70                 goto set;
  71         }
  72
  73         tmp = wpa_config_parse_string(value, &res_len);
  74         if (tmp == NULL) {
  75                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
  76                            line, data->name,
  77                            data->key_data ? "[KEY DATA REMOVED]" : value);
  78                 return -1;
  79         }
  80
  81         if (data->key_data) {
  82                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
  83                                       (u8 *) tmp, res_len);
  84         } else {
  85                 wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
  86                                   (u8 *) tmp, res_len);
  87         }
  88
  89         if (data->param3 && res_len < (size_t) data->param3) {
  90                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
  91                            "min_len=%ld)", line, data->name,
  92                            (unsigned long) res_len, (long) data->param3);
  93                 os_free(tmp);
  94                 return -1;
  95         }
  96
  97         if (data->param4 && res_len > (size_t) data->param4) {
  98                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
  99                            "max_len=%ld)", line, data->name,
 100                            (unsigned long) res_len, (long) data->param4);
 101                 os_free(tmp);
 102                 return -1;
 103         }
 104
 105 set:
 106         dst = (char **) (((u8 *) ssid) + (long) data->param1);
 107         dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
 108         os_free(*dst);
 109         *dst = tmp;
 110         if (data->param2)
 111                 *dst_len = res_len;
 112
 113         return 0;
 114 }
 115
 116
 117 #ifndef NO_CONFIG_WRITE
 118 static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
 119 {
 120         char *buf;
 121
 122         buf = os_malloc(len + 3);
 123         if (buf == NULL)
 124                 return NULL;
 125         buf[0] = '"';
 126         os_memcpy(buf + 1, value, len);
 127         buf[len + 1] = '"';
 128         buf[len + 2] = '\0';
 129
 130         return buf;
 131 }
 132
 133
 134 static char * wpa_config_write_string_hex(const u8 *value, size_t len)
 135 {
 136         char *buf;
 137
 138         buf = os_zalloc(2 * len + 1);
 139         if (buf == NULL)
 140                 return NULL;
 141         wpa_snprintf_hex(buf, 2 * len + 1, value, len);
 142
 143         return buf;
 144 }
 145
 146
 147 static char * wpa_config_write_string(const u8 *value, size_t len)
 148 {
 149         if (value == NULL)
 150                 return NULL;
 151
 152         if (is_hex(value, len))
 153                 return wpa_config_write_string_hex(value, len);
 154         else
 155                 return wpa_config_write_string_ascii(value, len);
 156 }
 157
 158
 159 static char * wpa_config_write_str(const struct parse_data *data,
 160                                    struct wpa_ssid *ssid)
 161 {
 162         size_t len;
 163         char **src;
 164
 165         src = (char **) (((u8 *) ssid) + (long) data->param1);
 166         if (*src == NULL)
 167                 return NULL;
 168
 169         if (data->param2)
 170                 len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
 171         else
 172                 len = os_strlen(*src);
 173
 174         return wpa_config_write_string((const u8 *) *src, len);
 175 }
 176 #endif /* NO_CONFIG_WRITE */
 177
 178
 179 static int wpa_config_parse_int(const struct parse_data *data,
 180                                 struct wpa_ssid *ssid,
 181                                 int line, const char *value)
 182 {
 183         int val, *dst;
 184         char *end;
 185
 186         dst = (int *) (((u8 *) ssid) + (long) data->param1);
 187         val = strtol(value, &end, 0);
 188         if (*end) {
 189                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
 190                            line, value);
 191                 return -1;
 192         }
 193         *dst = val;
 194         wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
 195
 196         if (data->param3 && *dst < (long) data->param3) {
 197                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
 198                            "min_value=%ld)", line, data->name, *dst,
 199                            (long) data->param3);
 200                 *dst = (long) data->param3;
 201                 return -1;
 202         }
 203
 204         if (data->param4 && *dst > (long) data->param4) {
 205                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
 206                            "max_value=%ld)", line, data->name, *dst,
 207                            (long) data->param4);
 208                 *dst = (long) data->param4;
 209                 return -1;
 210         }
 211
 212         return 0;
 213 }
 214
 215
 216 #ifndef NO_CONFIG_WRITE
 217 static char * wpa_config_write_int(const struct parse_data *data,
 218                                    struct wpa_ssid *ssid)
 219 {
 220         int *src, res;
 221         char *value;
 222
 223         src = (int *) (((u8 *) ssid) + (long) data->param1);
 224
 225         value = os_malloc(20);
 226         if (value == NULL)
 227                 return NULL;
 228         res = os_snprintf(value, 20, "%d", *src);
 229         if (os_snprintf_error(20, res)) {
 230                 os_free(value);
 231                 return NULL;
 232         }
 233         value[20 - 1] = '\0';
 234         return value;
 235 }
 236 #endif /* NO_CONFIG_WRITE */
 237
 238
 239 static int wpa_config_parse_addr_list(const struct parse_data *data,
 240                                       int line, const char *value,
 241                                       u8 **list, size_t *num, char *name,
 242                                       u8 abort_on_error, u8 masked)
 243 {
 244         const char *pos;
 245         u8 *buf, *n, addr[2 * ETH_ALEN];
 246         size_t count;
 247
 248         buf = NULL;
 249         count = 0;
 250
 251         pos = value;
 252         while (pos && *pos) {
 253                 while (*pos == ' ')
 254                         pos++;
 255
 256                 if (hwaddr_masked_aton(pos, addr, &addr[ETH_ALEN], masked)) {
 257                         if (abort_on_error || count == 0) {
 258                                 wpa_printf(MSG_ERROR,
 259                                            "Line %d: Invalid %s address '%s'",
 260                                            line, name, value);
 261                                 os_free(buf);
 262                                 return -1;
 263                         }
 264                         /* continue anyway since this could have been from a
 265                          * truncated configuration file line */
 266                         wpa_printf(MSG_INFO,
 267                                    "Line %d: Ignore likely truncated %s address '%s'",
 268                                    line, name, pos);
 269                 } else {
 270                         n = os_realloc_array(buf, count + 1, 2 * ETH_ALEN);
 271                         if (n == NULL) {
 272                                 os_free(buf);
 273                                 return -1;
 274                         }
 275                         buf = n;
 276                         os_memmove(buf + 2 * ETH_ALEN, buf,
 277                                    count * 2 * ETH_ALEN);
 278                         os_memcpy(buf, addr, 2 * ETH_ALEN);
 279                         count++;
 280                         wpa_printf(MSG_MSGDUMP,
 281                                    "%s: addr=" MACSTR " mask=" MACSTR,
 282                                    name, MAC2STR(addr),
 283                                    MAC2STR(&addr[ETH_ALEN]));
 284                 }
 285
 286                 pos = os_strchr(pos, ' ');
 287         }
 288
 289         os_free(*list);
 290         *list = buf;
 291         *num = count;
 292
 293         return 0;
 294 }
 295
 296
 297 #ifndef NO_CONFIG_WRITE
 298 static char * wpa_config_write_addr_list(const struct parse_data *data,
 299                                          const u8 *list, size_t num, char *name)
 300 {
 301         char *value, *end, *pos;
 302         int res;
 303         size_t i;
 304
 305         if (list == NULL || num == 0)
 306                 return NULL;
 307
 308         value = os_malloc(2 * 20 * num);
 309         if (value == NULL)
 310                 return NULL;
 311         pos = value;
 312         end = value + 2 * 20 * num;
 313
 314         for (i = num; i > 0; i--) {
 315                 const u8 *a = list + (i - 1) * 2 * ETH_ALEN;
 316                 const u8 *m = a + ETH_ALEN;
 317
 318                 if (i < num)
 319                         *pos++ = ' ';
 320                 res = hwaddr_mask_txt(pos, end - pos, a, m);
 321                 if (res < 0) {
 322                         os_free(value);
 323                         return NULL;
 324                 }
 325                 pos += res;
 326         }
 327
 328         return value;
 329 }
 330 #endif /* NO_CONFIG_WRITE */
 331
 332 static int wpa_config_parse_bssid(const struct parse_data *data,
 333                                   struct wpa_ssid *ssid, int line,
 334                                   const char *value)
 335 {
 336         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
 337             os_strcmp(value, "any") == 0) {
 338                 ssid->bssid_set = 0;
 339                 wpa_printf(MSG_MSGDUMP, "BSSID any");
 340                 return 0;
 341         }
 342         if (hwaddr_aton(value, ssid->bssid)) {
 343                 wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
 344                            line, value);
 345                 return -1;
 346         }
 347         ssid->bssid_set = 1;
 348         wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
 349         return 0;
 350 }
 351
 352
 353 #ifndef NO_CONFIG_WRITE
 354 static char * wpa_config_write_bssid(const struct parse_data *data,
 355                                      struct wpa_ssid *ssid)
 356 {
 357         char *value;
 358         int res;
 359
 360         if (!ssid->bssid_set)
 361                 return NULL;
 362
 363         value = os_malloc(20);
 364         if (value == NULL)
 365                 return NULL;
 366         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
 367         if (os_snprintf_error(20, res)) {
 368                 os_free(value);
 369                 return NULL;
 370         }
 371         value[20 - 1] = '\0';
 372         return value;
 373 }
 374 #endif /* NO_CONFIG_WRITE */
 375
 376
 377 static int wpa_config_parse_bssid_blacklist(const struct parse_data *data,
 378                                             struct wpa_ssid *ssid, int line,
 379                                             const char *value)
 380 {
 381         return wpa_config_parse_addr_list(data, line, value,
 382                                           &ssid->bssid_blacklist,
 383                                           &ssid->num_bssid_blacklist,
 384                                           "bssid_blacklist", 1, 1);
 385 }
 386
 387
 388 #ifndef NO_CONFIG_WRITE
 389 static char * wpa_config_write_bssid_blacklist(const struct parse_data *data,
 390                                                struct wpa_ssid *ssid)
 391 {
 392         return wpa_config_write_addr_list(data, ssid->bssid_blacklist,
 393                                           ssid->num_bssid_blacklist,
 394                                           "bssid_blacklist");
 395 }
 396 #endif /* NO_CONFIG_WRITE */
 397
 398
 399 static int wpa_config_parse_bssid_whitelist(const struct parse_data *data,
 400                                             struct wpa_ssid *ssid, int line,
 401                                             const char *value)
 402 {
 403         return wpa_config_parse_addr_list(data, line, value,
 404                                           &ssid->bssid_whitelist,
 405                                           &ssid->num_bssid_whitelist,
 406                                           "bssid_whitelist", 1, 1);
 407 }
 408
 409
 410 #ifndef NO_CONFIG_WRITE
 411 static char * wpa_config_write_bssid_whitelist(const struct parse_data *data,
 412                                                struct wpa_ssid *ssid)
 413 {
 414         return wpa_config_write_addr_list(data, ssid->bssid_whitelist,
 415                                           ssid->num_bssid_whitelist,
 416                                           "bssid_whitelist");
 417 }
 418 #endif /* NO_CONFIG_WRITE */
 419
 420
 421 static int wpa_config_parse_psk(const struct parse_data *data,
 422                                 struct wpa_ssid *ssid, int line,
 423                                 const char *value)
 424 {
 425 #ifdef CONFIG_EXT_PASSWORD
 426         if (os_strncmp(value, "ext:", 4) == 0) {
 427                 str_clear_free(ssid->passphrase);
 428                 ssid->passphrase = NULL;
 429                 ssid->psk_set = 0;
 430                 os_free(ssid->ext_psk);
 431                 ssid->ext_psk = os_strdup(value + 4);
 432                 if (ssid->ext_psk == NULL)
 433                         return -1;
 434                 wpa_printf(MSG_DEBUG, "PSK: External password '%s'",
 435                            ssid->ext_psk);
 436                 return 0;
 437         }
 438 #endif /* CONFIG_EXT_PASSWORD */
 439
 440         if (*value == '"') {
 441 #ifndef CONFIG_NO_PBKDF2
 442                 const char *pos;
 443                 size_t len;
 444
 445                 value++;
 446                 pos = os_strrchr(value, '"');
 447                 if (pos)
 448                         len = pos - value;
 449                 else
 450                         len = os_strlen(value);
 451                 if (len < 8 || len > 63) {
 452                         wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
 453                                    "length %lu (expected: 8..63) '%s'.",
 454                                    line, (unsigned long) len, value);
 455                         return -1;
 456                 }
 457                 wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
 458                                       (u8 *) value, len);
 459                 if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
 460                     os_memcmp(ssid->passphrase, value, len) == 0)
 461                         return 0;
 462                 ssid->psk_set = 0;
 463                 str_clear_free(ssid->passphrase);
 464                 ssid->passphrase = dup_binstr(value, len);
 465                 if (ssid->passphrase == NULL)
 466                         return -1;
 467                 return 0;
 468 #else /* CONFIG_NO_PBKDF2 */
 469                 wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
 470                            "supported.", line);
 471                 return -1;
 472 #endif /* CONFIG_NO_PBKDF2 */
 473         }
 474
 475         if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
 476             value[PMK_LEN * 2] != '\0') {
 477                 wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
 478                            line, value);
 479                 return -1;
 480         }
 481
 482         str_clear_free(ssid->passphrase);
 483         ssid->passphrase = NULL;
 484
 485         ssid->psk_set = 1;
 486         wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
 487         return 0;
 488 }
 489
 490
 491 #ifndef NO_CONFIG_WRITE
 492 static char * wpa_config_write_psk(const struct parse_data *data,
 493                                    struct wpa_ssid *ssid)
 494 {
 495 #ifdef CONFIG_EXT_PASSWORD
 496         if (ssid->ext_psk) {
 497                 size_t len = 4 + os_strlen(ssid->ext_psk) + 1;
 498                 char *buf = os_malloc(len);
 499                 int res;
 500
 501                 if (buf == NULL)
 502                         return NULL;
 503                 res = os_snprintf(buf, len, "ext:%s", ssid->ext_psk);
 504                 if (os_snprintf_error(len, res)) {
 505                         os_free(buf);
 506                         buf = NULL;
 507                 }
 508                 return buf;
 509         }
 510 #endif /* CONFIG_EXT_PASSWORD */
 511
 512         if (ssid->passphrase)
 513                 return wpa_config_write_string_ascii(
 514                         (const u8 *) ssid->passphrase,
 515                         os_strlen(ssid->passphrase));
 516
 517         if (ssid->psk_set)
 518                 return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
 519
 520         return NULL;
 521 }
 522 #endif /* NO_CONFIG_WRITE */
 523
 524
 525 static int wpa_config_parse_proto(const struct parse_data *data,
 526                                   struct wpa_ssid *ssid, int line,
 527                                   const char *value)
 528 {
 529         int val = 0, last, errors = 0;
 530         char *start, *end, *buf;
 531
 532         buf = os_strdup(value);
 533         if (buf == NULL)
 534                 return -1;
 535         start = buf;
 536
 537         while (*start != '\0') {
 538                 while (*start == ' ' || *start == '\t')
 539                         start++;
 540                 if (*start == '\0')
 541                         break;
 542                 end = start;
 543                 while (*end != ' ' && *end != '\t' && *end != '\0')
 544                         end++;
 545                 last = *end == '\0';
 546                 *end = '\0';
 547                 if (os_strcmp(start, "WPA") == 0)
 548                         val |= WPA_PROTO_WPA;
 549                 else if (os_strcmp(start, "RSN") == 0 ||
 550                          os_strcmp(start, "WPA2") == 0)
 551                         val |= WPA_PROTO_RSN;
 552                 else if (os_strcmp(start, "OSEN") == 0)
 553                         val |= WPA_PROTO_OSEN;
 554                 else {
 555                         wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
 556                                    line, start);
 557                         errors++;
 558                 }
 559
 560                 if (last)
 561                         break;
 562                 start = end + 1;
 563         }
 564         os_free(buf);
 565
 566         if (val == 0) {
 567                 wpa_printf(MSG_ERROR,
 568                            "Line %d: no proto values configured.", line);
 569                 errors++;
 570         }
 571
 572         wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
 573         ssid->proto = val;
 574         return errors ? -1 : 0;
 575 }
 576
 577
 578 #ifndef NO_CONFIG_WRITE
 579 static char * wpa_config_write_proto(const struct parse_data *data,
 580                                      struct wpa_ssid *ssid)
 581 {
 582         int ret;
 583         char *buf, *pos, *end;
 584
 585         pos = buf = os_zalloc(20);
 586         if (buf == NULL)
 587                 return NULL;
 588         end = buf + 20;
 589
 590         if (ssid->proto & WPA_PROTO_WPA) {
 591                 ret = os_snprintf(pos, end - pos, "%sWPA",
 592                                   pos == buf ? "" : " ");
 593                 if (os_snprintf_error(end - pos, ret))
 594                         return buf;
 595                 pos += ret;
 596         }
 597
 598         if (ssid->proto & WPA_PROTO_RSN) {
 599                 ret = os_snprintf(pos, end - pos, "%sRSN",
 600                                   pos == buf ? "" : " ");
 601                 if (os_snprintf_error(end - pos, ret))
 602                         return buf;
 603                 pos += ret;
 604         }
 605
 606         if (ssid->proto & WPA_PROTO_OSEN) {
 607                 ret = os_snprintf(pos, end - pos, "%sOSEN",
 608                                   pos == buf ? "" : " ");
 609                 if (os_snprintf_error(end - pos, ret))
 610                         return buf;
 611                 pos += ret;
 612         }
 613
 614         if (pos == buf) {
 615                 os_free(buf);
 616                 buf = NULL;
 617         }
 618
 619         return buf;
 620 }
 621 #endif /* NO_CONFIG_WRITE */
 622
 623
 624 static int wpa_config_parse_key_mgmt(const struct parse_data *data,
 625                                      struct wpa_ssid *ssid, int line,
 626                                      const char *value)
 627 {
 628         int val = 0, last, errors = 0;
 629         char *start, *end, *buf;
 630
 631         buf = os_strdup(value);
 632         if (buf == NULL)
 633                 return -1;
 634         start = buf;
 635
 636         while (*start != '\0') {
 637                 while (*start == ' ' || *start == '\t')
 638                         start++;
 639                 if (*start == '\0')
 640                         break;
 641                 end = start;
 642                 while (*end != ' ' && *end != '\t' && *end != '\0')
 643                         end++;
 644                 last = *end == '\0';
 645                 *end = '\0';
 646                 if (os_strcmp(start, "WPA-PSK") == 0)
 647                         val |= WPA_KEY_MGMT_PSK;
 648                 else if (os_strcmp(start, "WPA-EAP") == 0)
 649                         val |= WPA_KEY_MGMT_IEEE8021X;
 650                 else if (os_strcmp(start, "IEEE8021X") == 0)
 651                         val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
 652                 else if (os_strcmp(start, "NONE") == 0)
 653                         val |= WPA_KEY_MGMT_NONE;
 654                 else if (os_strcmp(start, "WPA-NONE") == 0)
 655                         val |= WPA_KEY_MGMT_WPA_NONE;
 656 #ifdef CONFIG_IEEE80211R
 657                 else if (os_strcmp(start, "FT-PSK") == 0)
 658                         val |= WPA_KEY_MGMT_FT_PSK;
 659                 else if (os_strcmp(start, "FT-EAP") == 0)
 660                         val |= WPA_KEY_MGMT_FT_IEEE8021X;
 661 #endif /* CONFIG_IEEE80211R */
 662 #ifdef CONFIG_IEEE80211W
 663                 else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
 664                         val |= WPA_KEY_MGMT_PSK_SHA256;
 665                 else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
 666                         val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
 667 #endif /* CONFIG_IEEE80211W */
 668 #ifdef CONFIG_WPS
 669                 else if (os_strcmp(start, "WPS") == 0)
 670                         val |= WPA_KEY_MGMT_WPS;
 671 #endif /* CONFIG_WPS */
 672 #ifdef CONFIG_SAE
 673                 else if (os_strcmp(start, "SAE") == 0)
 674                         val |= WPA_KEY_MGMT_SAE;
 675                 else if (os_strcmp(start, "FT-SAE") == 0)
 676                         val |= WPA_KEY_MGMT_FT_SAE;
 677 #endif /* CONFIG_SAE */
 678 #ifdef CONFIG_HS20
 679                 else if (os_strcmp(start, "OSEN") == 0)
 680                         val |= WPA_KEY_MGMT_OSEN;
 681 #endif /* CONFIG_HS20 */
 682 #ifdef CONFIG_SUITEB
 683                 else if (os_strcmp(start, "WPA-EAP-SUITE-B") == 0)
 684                         val |= WPA_KEY_MGMT_IEEE8021X_SUITE_B;
 685 #endif /* CONFIG_SUITEB */
 686 #ifdef CONFIG_SUITEB192
 687                 else if (os_strcmp(start, "WPA-EAP-SUITE-B-192") == 0)
 688                         val |= WPA_KEY_MGMT_IEEE8021X_SUITE_B_192;
 689 #endif /* CONFIG_SUITEB192 */
 690                 else {
 691                         wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
 692                                    line, start);
 693                         errors++;
 694                 }
 695
 696                 if (last)
 697                         break;
 698                 start = end + 1;
 699         }
 700         os_free(buf);
 701
 702         if (val == 0) {
 703                 wpa_printf(MSG_ERROR,
 704                            "Line %d: no key_mgmt values configured.", line);
 705                 errors++;
 706         }
 707
 708         wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
 709         ssid->key_mgmt = val;
 710         return errors ? -1 : 0;
 711 }
 712
 713
 714 #ifndef NO_CONFIG_WRITE
 715 static char * wpa_config_write_key_mgmt(const struct parse_data *data,
 716                                         struct wpa_ssid *ssid)
 717 {
 718         char *buf, *pos, *end;
 719         int ret;
 720
 721         pos = buf = os_zalloc(100);
 722         if (buf == NULL)
 723                 return NULL;
 724         end = buf + 100;
 725
 726         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
 727                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
 728                                   pos == buf ? "" : " ");
 729                 if (os_snprintf_error(end - pos, ret)) {
 730                         end[-1] = '\0';
 731                         return buf;
 732                 }
 733                 pos += ret;
 734         }
 735
 736         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
 737                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
 738                                   pos == buf ? "" : " ");
 739                 if (os_snprintf_error(end - pos, ret)) {
 740                         end[-1] = '\0';
 741                         return buf;
 742                 }
 743                 pos += ret;
 744         }
 745
 746         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 747                 ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
 748                                   pos == buf ? "" : " ");
 749                 if (os_snprintf_error(end - pos, ret)) {
 750                         end[-1] = '\0';
 751                         return buf;
 752                 }
 753                 pos += ret;
 754         }
 755
 756         if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
 757                 ret = os_snprintf(pos, end - pos, "%sNONE",
 758                                   pos == buf ? "" : " ");
 759                 if (os_snprintf_error(end - pos, ret)) {
 760                         end[-1] = '\0';
 761                         return buf;
 762                 }
 763                 pos += ret;
 764         }
 765
 766         if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
 767                 ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
 768                                   pos == buf ? "" : " ");
 769                 if (os_snprintf_error(end - pos, ret)) {
 770                         end[-1] = '\0';
 771                         return buf;
 772                 }
 773                 pos += ret;
 774         }
 775
 776 #ifdef CONFIG_IEEE80211R
 777         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) {
 778                 ret = os_snprintf(pos, end - pos, "%sFT-PSK",
 779                                   pos == buf ? "" : " ");
 780                 if (os_snprintf_error(end - pos, ret)) {
 781                         end[-1] = '\0';
 782                         return buf;
 783                 }
 784                 pos += ret;
 785         }
 786
 787         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
 788                 ret = os_snprintf(pos, end - pos, "%sFT-EAP",
 789                                   pos == buf ? "" : " ");
 790                 if (os_snprintf_error(end - pos, ret)) {
 791                         end[-1] = '\0';
 792                         return buf;
 793                 }
 794                 pos += ret;
 795         }
 796 #endif /* CONFIG_IEEE80211R */
 797
 798 #ifdef CONFIG_IEEE80211W
 799         if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
 800                 ret = os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
 801                                   pos == buf ? "" : " ");
 802                 if (os_snprintf_error(end - pos, ret)) {
 803                         end[-1] = '\0';
 804                         return buf;
 805                 }
 806                 pos += ret;
 807         }
 808
 809         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 810                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
 811                                   pos == buf ? "" : " ");
 812                 if (os_snprintf_error(end - pos, ret)) {
 813                         end[-1] = '\0';
 814                         return buf;
 815                 }
 816                 pos += ret;
 817         }
 818 #endif /* CONFIG_IEEE80211W */
 819
 820 #ifdef CONFIG_WPS
 821         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 822                 ret = os_snprintf(pos, end - pos, "%sWPS",
 823                                   pos == buf ? "" : " ");
 824                 if (os_snprintf_error(end - pos, ret)) {
 825                         end[-1] = '\0';
 826                         return buf;
 827                 }
 828                 pos += ret;
 829         }
 830 #endif /* CONFIG_WPS */
 831
 832 #ifdef CONFIG_SAE
 833         if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
 834                 ret = os_snprintf(pos, end - pos, "%sSAE",
 835                                   pos == buf ? "" : " ");
 836                 if (os_snprintf_error(end - pos, ret)) {
 837                         end[-1] = '\0';
 838                         return buf;
 839                 }
 840                 pos += ret;
 841         }
 842
 843         if (ssid->key_mgmt & WPA_KEY_MGMT_FT_SAE) {
 844                 ret = os_snprintf(pos, end - pos, "%sFT-SAE",
 845                                   pos == buf ? "" : " ");
 846                 if (os_snprintf_error(end - pos, ret)) {
 847                         end[-1] = '\0';
 848                         return buf;
 849                 }
 850                 pos += ret;
 851         }
 852 #endif /* CONFIG_SAE */
 853
 854 #ifdef CONFIG_HS20
 855         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN) {
 856                 ret = os_snprintf(pos, end - pos, "%sOSEN",
 857                                   pos == buf ? "" : " ");
 858                 if (os_snprintf_error(end - pos, ret)) {
 859                         end[-1] = '\0';
 860                         return buf;
 861                 }
 862                 pos += ret;
 863         }
 864 #endif /* CONFIG_HS20 */
 865
 866 #ifdef CONFIG_SUITEB
 867         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
 868                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SUITE-B",
 869                                   pos == buf ? "" : " ");
 870                 if (os_snprintf_error(end - pos, ret)) {
 871                         end[-1] = '\0';
 872                         return buf;
 873                 }
 874                 pos += ret;
 875         }
 876 #endif /* CONFIG_SUITEB */
 877
 878 #ifdef CONFIG_SUITEB192
 879         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
 880                 ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SUITE-B-192",
 881                                   pos == buf ? "" : " ");
 882                 if (os_snprintf_error(end - pos, ret)) {
 883                         end[-1] = '\0';
 884                         return buf;
 885                 }
 886                 pos += ret;
 887         }
 888 #endif /* CONFIG_SUITEB192 */
 889
 890         if (pos == buf) {
 891                 os_free(buf);
 892                 buf = NULL;
 893         }
 894
 895         return buf;
 896 }
 897 #endif /* NO_CONFIG_WRITE */
 898
 899
 900 static int wpa_config_parse_cipher(int line, const char *value)
 901 {
 902 #ifdef CONFIG_NO_WPA
 903         return -1;
 904 #else /* CONFIG_NO_WPA */
 905         int val = wpa_parse_cipher(value);
 906         if (val < 0) {
 907                 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
 908                            line, value);
 909                 return -1;
 910         }
 911         if (val == 0) {
 912                 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
 913                            line);
 914                 return -1;
 915         }
 916         return val;
 917 #endif /* CONFIG_NO_WPA */
 918 }
 919
 920
 921 #ifndef NO_CONFIG_WRITE
 922 static char * wpa_config_write_cipher(int cipher)
 923 {
 924 #ifdef CONFIG_NO_WPA
 925         return NULL;
 926 #else /* CONFIG_NO_WPA */
 927         char *buf = os_zalloc(50);
 928         if (buf == NULL)
 929                 return NULL;
 930
 931         if (wpa_write_ciphers(buf, buf + 50, cipher, " ") < 0) {
 932                 os_free(buf);
 933                 return NULL;
 934         }
 935
 936         return buf;
 937 #endif /* CONFIG_NO_WPA */
 938 }
 939 #endif /* NO_CONFIG_WRITE */
 940
 941
 942 static int wpa_config_parse_pairwise(const struct parse_data *data,
 943                                      struct wpa_ssid *ssid, int line,
 944                                      const char *value)
 945 {
 946         int val;
 947         val = wpa_config_parse_cipher(line, value);
 948         if (val == -1)
 949                 return -1;
 950         if (val & ~WPA_ALLOWED_PAIRWISE_CIPHERS) {
 951                 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
 952                            "(0x%x).", line, val);
 953                 return -1;
 954         }
 955
 956         wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
 957         ssid->pairwise_cipher = val;
 958         return 0;
 959 }
 960
 961
 962 #ifndef NO_CONFIG_WRITE
 963 static char * wpa_config_write_pairwise(const struct parse_data *data,
 964                                         struct wpa_ssid *ssid)
 965 {
 966         return wpa_config_write_cipher(ssid->pairwise_cipher);
 967 }
 968 #endif /* NO_CONFIG_WRITE */
 969
 970
 971 static int wpa_config_parse_group(const struct parse_data *data,
 972                                   struct wpa_ssid *ssid, int line,
 973                                   const char *value)
 974 {
 975         int val;
 976         val = wpa_config_parse_cipher(line, value);
 977         if (val == -1)
 978                 return -1;
 979
 980         /*
 981          * Backwards compatibility - filter out WEP ciphers that were previously
 982          * allowed.
 983          */
 984         val &= ~(WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40);
 985
 986         if (val & ~WPA_ALLOWED_GROUP_CIPHERS) {
 987                 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
 988                            "(0x%x).", line, val);
 989                 return -1;
 990         }
 991
 992         wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
 993         ssid->group_cipher = val;
 994         return 0;
 995 }
 996
 997
 998 #ifndef NO_CONFIG_WRITE
 999 static char * wpa_config_write_group(const struct parse_data *data,
1000                                      struct wpa_ssid *ssid)
1001 {
1002         return wpa_config_write_cipher(ssid->group_cipher);
1003 }
1004 #endif /* NO_CONFIG_WRITE */
1005
1006
1007 static int wpa_config_parse_auth_alg(const struct parse_data *data,
1008                                      struct wpa_ssid *ssid, int line,
1009                                      const char *value)
1010 {
1011         int val = 0, last, errors = 0;
1012         char *start, *end, *buf;
1013
1014         buf = os_strdup(value);
1015         if (buf == NULL)
1016                 return -1;
1017         start = buf;
1018
1019         while (*start != '\0') {
1020                 while (*start == ' ' || *start == '\t')
1021                         start++;
1022                 if (*start == '\0')
1023                         break;
1024                 end = start;
1025                 while (*end != ' ' && *end != '\t' && *end != '\0')
1026                         end++;
1027                 last = *end == '\0';
1028                 *end = '\0';
1029                 if (os_strcmp(start, "OPEN") == 0)
1030                         val |= WPA_AUTH_ALG_OPEN;
1031                 else if (os_strcmp(start, "SHARED") == 0)
1032                         val |= WPA_AUTH_ALG_SHARED;
1033                 else if (os_strcmp(start, "LEAP") == 0)
1034                         val |= WPA_AUTH_ALG_LEAP;
1035                 else {
1036                         wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
1037                                    line, start);
1038                         errors++;
1039                 }
1040
1041                 if (last)
1042                         break;
1043                 start = end + 1;
1044         }
1045         os_free(buf);
1046
1047         if (val == 0) {
1048                 wpa_printf(MSG_ERROR,
1049                            "Line %d: no auth_alg values configured.", line);
1050                 errors++;
1051         }
1052
1053         wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
1054         ssid->auth_alg = val;
1055         return errors ? -1 : 0;
1056 }
1057
1058
1059 #ifndef NO_CONFIG_WRITE
1060 static char * wpa_config_write_auth_alg(const struct parse_data *data,
1061                                         struct wpa_ssid *ssid)
1062 {
1063         char *buf, *pos, *end;
1064         int ret;
1065
1066         pos = buf = os_zalloc(30);
1067         if (buf == NULL)
1068                 return NULL;
1069         end = buf + 30;
1070
1071         if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
1072                 ret = os_snprintf(pos, end - pos, "%sOPEN",
1073                                   pos == buf ? "" : " ");
1074                 if (os_snprintf_error(end - pos, ret)) {
1075                         end[-1] = '\0';
1076                         return buf;
1077                 }
1078                 pos += ret;
1079         }
1080
1081         if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
1082                 ret = os_snprintf(pos, end - pos, "%sSHARED",
1083                                   pos == buf ? "" : " ");
1084                 if (os_snprintf_error(end - pos, ret)) {
1085                         end[-1] = '\0';
1086                         return buf;
1087                 }
1088                 pos += ret;
1089         }
1090
1091         if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
1092                 ret = os_snprintf(pos, end - pos, "%sLEAP",
1093                                   pos == buf ? "" : " ");
1094                 if (os_snprintf_error(end - pos, ret)) {
1095                         end[-1] = '\0';
1096                         return buf;
1097                 }
1098                 pos += ret;
1099         }
1100
1101         if (pos == buf) {
1102                 os_free(buf);
1103                 buf = NULL;
1104         }
1105
1106         return buf;
1107 }
1108 #endif /* NO_CONFIG_WRITE */
1109
1110
1111 static int * wpa_config_parse_int_array(const char *value)
1112 {
1113         int *freqs;
1114         size_t used, len;
1115         const char *pos;
1116
1117         used = 0;
1118         len = 10;
1119         freqs = os_calloc(len + 1, sizeof(int));
1120         if (freqs == NULL)
1121                 return NULL;
1122
1123         pos = value;
1124         while (pos) {
1125                 while (*pos == ' ')
1126                         pos++;
1127                 if (used == len) {
1128                         int *n;
1129                         size_t i;
1130                         n = os_realloc_array(freqs, len * 2 + 1, sizeof(int));
1131                         if (n == NULL) {
1132                                 os_free(freqs);
1133                                 return NULL;
1134                         }
1135                         for (i = len; i <= len * 2; i++)
1136                                 n[i] = 0;
1137                         freqs = n;
1138                         len *= 2;
1139                 }
1140
1141                 freqs[used] = atoi(pos);
1142                 if (freqs[used] == 0)
1143                         break;
1144                 used++;
1145                 pos = os_strchr(pos + 1, ' ');
1146         }
1147
1148         return freqs;
1149 }
1150
1151
1152 static int wpa_config_parse_scan_freq(const struct parse_data *data,
1153                                       struct wpa_ssid *ssid, int line,
1154                                       const char *value)
1155 {
1156         int *freqs;
1157
1158         freqs = wpa_config_parse_int_array(value);
1159         if (freqs == NULL)
1160                 return -1;
1161         if (freqs[0] == 0) {
1162                 os_free(freqs);
1163                 freqs = NULL;
1164         }
1165         os_free(ssid->scan_freq);
1166         ssid->scan_freq = freqs;
1167
1168         return 0;
1169 }
1170
1171
1172 static int wpa_config_parse_freq_list(const struct parse_data *data,
1173                                       struct wpa_ssid *ssid, int line,
1174                                       const char *value)
1175 {
1176         int *freqs;
1177
1178         freqs = wpa_config_parse_int_array(value);
1179         if (freqs == NULL)
1180                 return -1;
1181         if (freqs[0] == 0) {
1182                 os_free(freqs);
1183                 freqs = NULL;
1184         }
1185         os_free(ssid->freq_list);
1186         ssid->freq_list = freqs;
1187
1188         return 0;
1189 }
1190
1191
1192 #ifndef NO_CONFIG_WRITE
1193 static char * wpa_config_write_freqs(const struct parse_data *data,
1194                                      const int *freqs)
1195 {
1196         char *buf, *pos, *end;
1197         int i, ret;
1198         size_t count;
1199
1200         if (freqs == NULL)
1201                 return NULL;
1202
1203         count = 0;
1204         for (i = 0; freqs[i]; i++)
1205                 count++;
1206
1207         pos = buf = os_zalloc(10 * count + 1);
1208         if (buf == NULL)
1209                 return NULL;
1210         end = buf + 10 * count + 1;
1211
1212         for (i = 0; freqs[i]; i++) {
1213                 ret = os_snprintf(pos, end - pos, "%s%u",
1214                                   i == 0 ? "" : " ", freqs[i]);
1215                 if (os_snprintf_error(end - pos, ret)) {
1216                         end[-1] = '\0';
1217                         return buf;
1218                 }
1219                 pos += ret;
1220         }
1221
1222         return buf;
1223 }
1224
1225
1226 static char * wpa_config_write_scan_freq(const struct parse_data *data,
1227                                          struct wpa_ssid *ssid)
1228 {
1229         return wpa_config_write_freqs(data, ssid->scan_freq);
1230 }
1231
1232
1233 static char * wpa_config_write_freq_list(const struct parse_data *data,
1234                                          struct wpa_ssid *ssid)
1235 {
1236         return wpa_config_write_freqs(data, ssid->freq_list);
1237 }
1238 #endif /* NO_CONFIG_WRITE */
1239
1240
1241 #ifdef IEEE8021X_EAPOL
1242 static int wpa_config_parse_eap(const struct parse_data *data,
1243                                 struct wpa_ssid *ssid, int line,
1244                                 const char *value)
1245 {
1246         int last, errors = 0;
1247         char *start, *end, *buf;
1248         struct eap_method_type *methods = NULL, *tmp;
1249         size_t num_methods = 0;
1250
1251         buf = os_strdup(value);
1252         if (buf == NULL)
1253                 return -1;
1254         start = buf;
1255
1256         while (*start != '\0') {
1257                 while (*start == ' ' || *start == '\t')
1258                         start++;
1259                 if (*start == '\0')
1260                         break;
1261                 end = start;
1262                 while (*end != ' ' && *end != '\t' && *end != '\0')
1263                         end++;
1264                 last = *end == '\0';
1265                 *end = '\0';
1266                 tmp = methods;
1267                 methods = os_realloc_array(methods, num_methods + 1,
1268                                            sizeof(*methods));
1269                 if (methods == NULL) {
1270                         os_free(tmp);
1271                         os_free(buf);
1272                         return -1;
1273                 }
1274                 methods[num_methods].method = eap_peer_get_type(
1275                         start, &methods[num_methods].vendor);
1276                 if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1277                     methods[num_methods].method == EAP_TYPE_NONE) {
1278                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
1279                                    "'%s'", line, start);
1280                         wpa_printf(MSG_ERROR, "You may need to add support for"
1281                                    " this EAP method during wpa_supplicant\n"
1282                                    "build time configuration.\n"
1283                                    "See README for more information.");
1284                         errors++;
1285                 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1286                            methods[num_methods].method == EAP_TYPE_LEAP)
1287                         ssid->leap++;
1288                 else
1289                         ssid->non_leap++;
1290                 num_methods++;
1291                 if (last)
1292                         break;
1293                 start = end + 1;
1294         }
1295         os_free(buf);
1296
1297         tmp = methods;
1298         methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods));
1299         if (methods == NULL) {
1300                 os_free(tmp);
1301                 return -1;
1302         }
1303         methods[num_methods].vendor = EAP_VENDOR_IETF;
1304         methods[num_methods].method = EAP_TYPE_NONE;
1305         num_methods++;
1306
1307         wpa_hexdump(MSG_MSGDUMP, "eap methods",
1308                     (u8 *) methods, num_methods * sizeof(*methods));
1309         os_free(ssid->eap.eap_methods);
1310         ssid->eap.eap_methods = methods;
1311         return errors ? -1 : 0;
1312 }
1313
1314
1315 #ifndef NO_CONFIG_WRITE
1316 static char * wpa_config_write_eap(const struct parse_data *data,
1317                                    struct wpa_ssid *ssid)
1318 {
1319         int i, ret;
1320         char *buf, *pos, *end;
1321         const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
1322         const char *name;
1323
1324         if (eap_methods == NULL)
1325                 return NULL;
1326
1327         pos = buf = os_zalloc(100);
1328         if (buf == NULL)
1329                 return NULL;
1330         end = buf + 100;
1331
1332         for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
1333                      eap_methods[i].method != EAP_TYPE_NONE; i++) {
1334                 name = eap_get_name(eap_methods[i].vendor,
1335                                     eap_methods[i].method);
1336                 if (name) {
1337                         ret = os_snprintf(pos, end - pos, "%s%s",
1338                                           pos == buf ? "" : " ", name);
1339                         if (os_snprintf_error(end - pos, ret))
1340                                 break;
1341                         pos += ret;
1342                 }
1343         }
1344
1345         end[-1] = '\0';
1346
1347         return buf;
1348 }
1349 #endif /* NO_CONFIG_WRITE */
1350
1351
1352 static int wpa_config_parse_password(const struct parse_data *data,
1353                                      struct wpa_ssid *ssid, int line,
1354                                      const char *value)
1355 {
1356         u8 *hash;
1357
1358         if (os_strcmp(value, "NULL") == 0) {
1359                 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
1360                 bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1361                 ssid->eap.password = NULL;
1362                 ssid->eap.password_len = 0;
1363                 return 0;
1364         }
1365
1366 #ifdef CONFIG_EXT_PASSWORD
1367         if (os_strncmp(value, "ext:", 4) == 0) {
1368                 char *name = os_strdup(value + 4);
1369                 if (name == NULL)
1370                         return -1;
1371                 bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1372                 ssid->eap.password = (u8 *) name;
1373                 ssid->eap.password_len = os_strlen(name);
1374                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1375                 ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD;
1376                 return 0;
1377         }
1378 #endif /* CONFIG_EXT_PASSWORD */
1379
1380         if (os_strncmp(value, "hash:", 5) != 0) {
1381                 char *tmp;
1382                 size_t res_len;
1383
1384                 tmp = wpa_config_parse_string(value, &res_len);
1385                 if (tmp == NULL) {
1386                         wpa_printf(MSG_ERROR, "Line %d: failed to parse "
1387                                    "password.", line);
1388                         return -1;
1389                 }
1390                 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
1391                                       (u8 *) tmp, res_len);
1392
1393                 bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1394                 ssid->eap.password = (u8 *) tmp;
1395                 ssid->eap.password_len = res_len;
1396                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1397                 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1398
1399                 return 0;
1400         }
1401
1402
1403         /* NtPasswordHash: hash:<32 hex digits> */
1404         if (os_strlen(value + 5) != 2 * 16) {
1405                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length "
1406                            "(expected 32 hex digits)", line);
1407                 return -1;
1408         }
1409
1410         hash = os_malloc(16);
1411         if (hash == NULL)
1412                 return -1;
1413
1414         if (hexstr2bin(value + 5, hash, 16)) {
1415                 os_free(hash);
1416                 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
1417                 return -1;
1418         }
1419
1420         wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
1421
1422         bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1423         ssid->eap.password = hash;
1424         ssid->eap.password_len = 16;
1425         ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1426         ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1427
1428         return 0;
1429 }
1430
1431
1432 #ifndef NO_CONFIG_WRITE
1433 static char * wpa_config_write_password(const struct parse_data *data,
1434                                         struct wpa_ssid *ssid)
1435 {
1436         char *buf;
1437
1438         if (ssid->eap.password == NULL)
1439                 return NULL;
1440
1441 #ifdef CONFIG_EXT_PASSWORD
1442         if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) {
1443                 buf = os_zalloc(4 + ssid->eap.password_len + 1);
1444                 if (buf == NULL)
1445                         return NULL;
1446                 os_memcpy(buf, "ext:", 4);
1447                 os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len);
1448                 return buf;
1449         }
1450 #endif /* CONFIG_EXT_PASSWORD */
1451
1452         if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
1453                 return wpa_config_write_string(
1454                         ssid->eap.password, ssid->eap.password_len);
1455         }
1456
1457         buf = os_malloc(5 + 32 + 1);
1458         if (buf == NULL)
1459                 return NULL;
1460
1461         os_memcpy(buf, "hash:", 5);
1462         wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
1463
1464         return buf;
1465 }
1466 #endif /* NO_CONFIG_WRITE */
1467 #endif /* IEEE8021X_EAPOL */
1468
1469
1470 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
1471                                     const char *value, int idx)
1472 {
1473         char *buf, title[20];
1474         int res;
1475
1476         buf = wpa_config_parse_string(value, len);
1477         if (buf == NULL) {
1478                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
1479                            line, idx, value);
1480                 return -1;
1481         }
1482         if (*len > MAX_WEP_KEY_LEN) {
1483                 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
1484                            line, idx, value);
1485                 os_free(buf);
1486                 return -1;
1487         }
1488         if (*len && *len != 5 && *len != 13 && *len != 16) {
1489                 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - "
1490                            "this network block will be ignored",
1491                            line, (unsigned int) *len);
1492         }
1493         os_memcpy(key, buf, *len);
1494         str_clear_free(buf);
1495         res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
1496         if (!os_snprintf_error(sizeof(title), res))
1497                 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
1498         return 0;
1499 }
1500
1501
1502 static int wpa_config_parse_wep_key0(const struct parse_data *data,
1503                                      struct wpa_ssid *ssid, int line,
1504                                      const char *value)
1505 {
1506         return wpa_config_parse_wep_key(ssid->wep_key[0],
1507                                         &ssid->wep_key_len[0], line,
1508                                         value, 0);
1509 }
1510
1511
1512 static int wpa_config_parse_wep_key1(const struct parse_data *data,
1513                                      struct wpa_ssid *ssid, int line,
1514                                      const char *value)
1515 {
1516         return wpa_config_parse_wep_key(ssid->wep_key[1],
1517                                         &ssid->wep_key_len[1], line,
1518                                         value, 1);
1519 }
1520
1521
1522 static int wpa_config_parse_wep_key2(const struct parse_data *data,
1523                                      struct wpa_ssid *ssid, int line,
1524                                      const char *value)
1525 {
1526         return wpa_config_parse_wep_key(ssid->wep_key[2],
1527                                         &ssid->wep_key_len[2], line,
1528                                         value, 2);
1529 }
1530
1531
1532 static int wpa_config_parse_wep_key3(const struct parse_data *data,
1533                                      struct wpa_ssid *ssid, int line,
1534                                      const char *value)
1535 {
1536         return wpa_config_parse_wep_key(ssid->wep_key[3],
1537                                         &ssid->wep_key_len[3], line,
1538                                         value, 3);
1539 }
1540
1541
1542 #ifndef NO_CONFIG_WRITE
1543 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
1544 {
1545         if (ssid->wep_key_len[idx] == 0)
1546                 return NULL;
1547         return wpa_config_write_string(ssid->wep_key[idx],
1548                                        ssid->wep_key_len[idx]);
1549 }
1550
1551
1552 static char * wpa_config_write_wep_key0(const struct parse_data *data,
1553                                         struct wpa_ssid *ssid)
1554 {
1555         return wpa_config_write_wep_key(ssid, 0);
1556 }
1557
1558
1559 static char * wpa_config_write_wep_key1(const struct parse_data *data,
1560                                         struct wpa_ssid *ssid)
1561 {
1562         return wpa_config_write_wep_key(ssid, 1);
1563 }
1564
1565
1566 static char * wpa_config_write_wep_key2(const struct parse_data *data,
1567                                         struct wpa_ssid *ssid)
1568 {
1569         return wpa_config_write_wep_key(ssid, 2);
1570 }
1571
1572
1573 static char * wpa_config_write_wep_key3(const struct parse_data *data,
1574                                         struct wpa_ssid *ssid)
1575 {
1576         return wpa_config_write_wep_key(ssid, 3);
1577 }
1578 #endif /* NO_CONFIG_WRITE */
1579
1580
1581 #ifdef CONFIG_P2P
1582
1583 static int wpa_config_parse_go_p2p_dev_addr(const struct parse_data *data,
1584                                             struct wpa_ssid *ssid, int line,
1585                                             const char *value)
1586 {
1587         if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
1588             os_strcmp(value, "any") == 0) {
1589                 os_memset(ssid->go_p2p_dev_addr, 0, ETH_ALEN);
1590                 wpa_printf(MSG_MSGDUMP, "GO P2P Device Address any");
1591                 return 0;
1592         }
1593         if (hwaddr_aton(value, ssid->go_p2p_dev_addr)) {
1594                 wpa_printf(MSG_ERROR, "Line %d: Invalid GO P2P Device Address '%s'.",
1595                            line, value);
1596                 return -1;
1597         }
1598         ssid->bssid_set = 1;
1599         wpa_printf(MSG_MSGDUMP, "GO P2P Device Address " MACSTR,
1600                    MAC2STR(ssid->go_p2p_dev_addr));
1601         return 0;
1602 }
1603
1604
1605 #ifndef NO_CONFIG_WRITE
1606 static char * wpa_config_write_go_p2p_dev_addr(const struct parse_data *data,
1607                                                struct wpa_ssid *ssid)
1608 {
1609         char *value;
1610         int res;
1611
1612         if (is_zero_ether_addr(ssid->go_p2p_dev_addr))
1613                 return NULL;
1614
1615         value = os_malloc(20);
1616         if (value == NULL)
1617                 return NULL;
1618         res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->go_p2p_dev_addr));
1619         if (os_snprintf_error(20, res)) {
1620                 os_free(value);
1621                 return NULL;
1622         }
1623         value[20 - 1] = '\0';
1624         return value;
1625 }
1626 #endif /* NO_CONFIG_WRITE */
1627
1628
1629 static int wpa_config_parse_p2p_client_list(const struct parse_data *data,
1630                                             struct wpa_ssid *ssid, int line,
1631                                             const char *value)
1632 {
1633         return wpa_config_parse_addr_list(data, line, value,
1634                                           &ssid->p2p_client_list,
1635                                           &ssid->num_p2p_clients,
1636                                           "p2p_client_list", 0, 0);
1637 }
1638
1639
1640 #ifndef NO_CONFIG_WRITE
1641 static char * wpa_config_write_p2p_client_list(const struct parse_data *data,
1642                                                struct wpa_ssid *ssid)
1643 {
1644         return wpa_config_write_addr_list(data, ssid->p2p_client_list,
1645                                           ssid->num_p2p_clients,
1646                                           "p2p_client_list");
1647 }
1648 #endif /* NO_CONFIG_WRITE */
1649
1650
1651 static int wpa_config_parse_psk_list(const struct parse_data *data,
1652                                      struct wpa_ssid *ssid, int line,
1653                                      const char *value)
1654 {
1655         struct psk_list_entry *p;
1656         const char *pos;
1657
1658         p = os_zalloc(sizeof(*p));
1659         if (p == NULL)
1660                 return -1;
1661
1662         pos = value;
1663         if (os_strncmp(pos, "P2P-", 4) == 0) {
1664                 p->p2p = 1;
1665                 pos += 4;
1666         }
1667
1668         if (hwaddr_aton(pos, p->addr)) {
1669                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list address '%s'",
1670                            line, pos);
1671                 os_free(p);
1672                 return -1;
1673         }
1674         pos += 17;
1675         if (*pos != '-') {
1676                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list '%s'",
1677                            line, pos);
1678                 os_free(p);
1679                 return -1;
1680         }
1681         pos++;
1682
1683         if (hexstr2bin(pos, p->psk, PMK_LEN) || pos[PMK_LEN * 2] != '\0') {
1684                 wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list PSK '%s'",
1685                            line, pos);
1686                 os_free(p);
1687                 return -1;
1688         }
1689
1690         dl_list_add(&ssid->psk_list, &p->list);
1691
1692         return 0;
1693 }
1694
1695
1696 #ifndef NO_CONFIG_WRITE
1697 static char * wpa_config_write_psk_list(const struct parse_data *data,
1698                                         struct wpa_ssid *ssid)
1699 {
1700         return NULL;
1701 }
1702 #endif /* NO_CONFIG_WRITE */
1703
1704 #endif /* CONFIG_P2P */
1705
1706
1707 #ifdef CONFIG_MESH
1708
1709 static int wpa_config_parse_mesh_basic_rates(const struct parse_data *data,
1710                                              struct wpa_ssid *ssid, int line,
1711                                              const char *value)
1712 {
1713         int *rates = wpa_config_parse_int_array(value);
1714
1715         if (rates == NULL) {
1716                 wpa_printf(MSG_ERROR, "Line %d: Invalid mesh_basic_rates '%s'",
1717                            line, value);
1718                 return -1;
1719         }
1720         if (rates[0] == 0) {
1721                 os_free(rates);
1722                 rates = NULL;
1723         }
1724
1725         os_free(ssid->mesh_basic_rates);
1726         ssid->mesh_basic_rates = rates;
1727
1728         return 0;
1729 }
1730
1731
1732 #ifndef NO_CONFIG_WRITE
1733
1734 static char * wpa_config_write_mesh_basic_rates(const struct parse_data *data,
1735                                                 struct wpa_ssid *ssid)
1736 {
1737         return wpa_config_write_freqs(data, ssid->mesh_basic_rates);
1738 }
1739
1740 #endif /* NO_CONFIG_WRITE */
1741
1742 #endif /* CONFIG_MESH */
1743
1744
1745 /* Helper macros for network block parser */
1746
1747 #ifdef OFFSET
1748 #undef OFFSET
1749 #endif /* OFFSET */
1750 /* OFFSET: Get offset of a variable within the wpa_ssid structure */
1751 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
1752
1753 /* STR: Define a string variable for an ASCII string; f = field name */
1754 #ifdef NO_CONFIG_WRITE
1755 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
1756 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f)
1757 #else /* NO_CONFIG_WRITE */
1758 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
1759 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f)
1760 #endif /* NO_CONFIG_WRITE */
1761 #define STR(f) _STR(f), NULL, NULL, NULL, 0
1762 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0
1763 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
1764 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1
1765
1766 /* STR_LEN: Define a string variable with a separate variable for storing the
1767  * data length. Unlike STR(), this can be used to store arbitrary binary data
1768  * (i.e., even nul termination character). */
1769 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
1770 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len)
1771 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
1772 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0
1773 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
1774
1775 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
1776  * explicitly specified. */
1777 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
1778 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
1779 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
1780
1781 #ifdef NO_CONFIG_WRITE
1782 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
1783 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0
1784 #else /* NO_CONFIG_WRITE */
1785 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1786         OFFSET(f), (void *) 0
1787 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1788         OFFSET(eap.f), (void *) 0
1789 #endif /* NO_CONFIG_WRITE */
1790
1791 /* INT: Define an integer variable */
1792 #define INT(f) _INT(f), NULL, NULL, 0
1793 #define INTe(f) _INTe(f), NULL, NULL, 0
1794
1795 /* INT_RANGE: Define an integer variable with allowed value range */
1796 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
1797
1798 /* FUNC: Define a configuration variable that uses a custom function for
1799  * parsing and writing the value. */
1800 #ifdef NO_CONFIG_WRITE
1801 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
1802 #else /* NO_CONFIG_WRITE */
1803 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
1804         NULL, NULL, NULL, NULL
1805 #endif /* NO_CONFIG_WRITE */
1806 #define FUNC(f) _FUNC(f), 0
1807 #define FUNC_KEY(f) _FUNC(f), 1
1808
1809 /*
1810  * Table of network configuration variables. This table is used to parse each
1811  * network configuration variable, e.g., each line in wpa_supplicant.conf file
1812  * that is inside a network block.
1813  *
1814  * This table is generated using the helper macros defined above and with
1815  * generous help from the C pre-processor. The field name is stored as a string
1816  * into .name and for STR and INT types, the offset of the target buffer within
1817  * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
1818  * offset to the field containing the length of the configuration variable.
1819  * .param3 and .param4 can be used to mark the allowed range (length for STR
1820  * and value for INT).
1821  *
1822  * For each configuration line in wpa_supplicant.conf, the parser goes through
1823  * this table and select the entry that matches with the field name. The parser
1824  * function (.parser) is then called to parse the actual value of the field.
1825  *
1826  * This kind of mechanism makes it easy to add new configuration parameters,
1827  * since only one line needs to be added into this table and into the
1828  * struct wpa_ssid definition if the new variable is either a string or
1829  * integer. More complex types will need to use their own parser and writer
1830  * functions.
1831  */
1832 static const struct parse_data ssid_fields[] = {
1833         { STR_RANGE(ssid, 0, SSID_MAX_LEN) },
1834         { INT_RANGE(scan_ssid, 0, 1) },
1835         { FUNC(bssid) },
1836         { FUNC(bssid_blacklist) },
1837         { FUNC(bssid_whitelist) },
1838         { FUNC_KEY(psk) },
1839         { INT(mem_only_psk) },
1840         { FUNC(proto) },
1841         { FUNC(key_mgmt) },
1842         { INT(bg_scan_period) },
1843         { FUNC(pairwise) },
1844         { FUNC(group) },
1845         { FUNC(auth_alg) },
1846         { FUNC(scan_freq) },
1847         { FUNC(freq_list) },
1848         { INT_RANGE(max_oper_chwidth, VHT_CHANWIDTH_USE_HT,
1849                     VHT_CHANWIDTH_80P80MHZ) },
1850 #ifdef IEEE8021X_EAPOL
1851         { FUNC(eap) },
1852         { STR_LENe(identity) },
1853         { STR_LENe(anonymous_identity) },
1854         { FUNC_KEY(password) },
1855         { STRe(ca_cert) },
1856         { STRe(ca_path) },
1857         { STRe(client_cert) },
1858         { STRe(private_key) },
1859         { STR_KEYe(private_key_passwd) },
1860         { STRe(dh_file) },
1861         { STRe(subject_match) },
1862         { STRe(altsubject_match) },
1863         { STRe(domain_suffix_match) },
1864         { STRe(domain_match) },
1865         { STRe(ca_cert2) },
1866         { STRe(ca_path2) },
1867         { STRe(client_cert2) },
1868         { STRe(private_key2) },
1869         { STR_KEYe(private_key2_passwd) },
1870         { STRe(dh_file2) },
1871         { STRe(subject_match2) },
1872         { STRe(altsubject_match2) },
1873         { STRe(domain_suffix_match2) },
1874         { STRe(domain_match2) },
1875         { STRe(phase1) },
1876         { STRe(phase2) },
1877         { STRe(pcsc) },
1878         { STR_KEYe(pin) },
1879         { STRe(engine_id) },
1880         { STRe(key_id) },
1881         { STRe(cert_id) },
1882         { STRe(ca_cert_id) },
1883         { STR_KEYe(pin2) },
1884         { STRe(engine2_id) },
1885         { STRe(key2_id) },
1886         { STRe(cert2_id) },
1887         { STRe(ca_cert2_id) },
1888         { INTe(engine) },
1889         { INTe(engine2) },
1890         { INT(eapol_flags) },
1891         { INTe(sim_num) },
1892         { STRe(openssl_ciphers) },
1893         { INTe(erp) },
1894 #endif /* IEEE8021X_EAPOL */
1895         { FUNC_KEY(wep_key0) },
1896         { FUNC_KEY(wep_key1) },
1897         { FUNC_KEY(wep_key2) },
1898         { FUNC_KEY(wep_key3) },
1899         { INT(wep_tx_keyidx) },
1900         { INT(priority) },
1901 #ifdef IEEE8021X_EAPOL
1902         { INT(eap_workaround) },
1903         { STRe(pac_file) },
1904         { INTe(fragment_size) },
1905         { INTe(ocsp) },
1906 #endif /* IEEE8021X_EAPOL */
1907 #ifdef CONFIG_MESH
1908         { INT_RANGE(mode, 0, 5) },
1909         { INT_RANGE(no_auto_peer, 0, 1) },
1910 #else /* CONFIG_MESH */
1911         { INT_RANGE(mode, 0, 4) },
1912 #endif /* CONFIG_MESH */
1913         { INT_RANGE(proactive_key_caching, 0, 1) },
1914         { INT_RANGE(disabled, 0, 2) },
1915         { STR(id_str) },
1916 #ifdef CONFIG_IEEE80211W
1917         { INT_RANGE(ieee80211w, 0, 2) },
1918 #endif /* CONFIG_IEEE80211W */
1919         { INT_RANGE(peerkey, 0, 1) },
1920         { INT_RANGE(mixed_cell, 0, 1) },
1921         { INT_RANGE(frequency, 0, 65000) },
1922         { INT_RANGE(fixed_freq, 0, 1) },
1923 #ifdef CONFIG_MESH
1924         { FUNC(mesh_basic_rates) },
1925         { INT(dot11MeshMaxRetries) },
1926         { INT(dot11MeshRetryTimeout) },
1927         { INT(dot11MeshConfirmTimeout) },
1928         { INT(dot11MeshHoldingTimeout) },
1929 #endif /* CONFIG_MESH */
1930         { INT(wpa_ptk_rekey) },
1931         { STR(bgscan) },
1932         { INT_RANGE(ignore_broadcast_ssid, 0, 2) },
1933 #ifdef CONFIG_P2P
1934         { FUNC(go_p2p_dev_addr) },
1935         { FUNC(p2p_client_list) },
1936         { FUNC(psk_list) },
1937 #endif /* CONFIG_P2P */
1938 #ifdef CONFIG_HT_OVERRIDES
1939         { INT_RANGE(disable_ht, 0, 1) },
1940         { INT_RANGE(disable_ht40, -1, 1) },
1941         { INT_RANGE(disable_sgi, 0, 1) },
1942         { INT_RANGE(disable_ldpc, 0, 1) },
1943         { INT_RANGE(ht40_intolerant, 0, 1) },
1944         { INT_RANGE(disable_max_amsdu, -1, 1) },
1945         { INT_RANGE(ampdu_factor, -1, 3) },
1946         { INT_RANGE(ampdu_density, -1, 7) },
1947         { STR(ht_mcs) },
1948 #endif /* CONFIG_HT_OVERRIDES */
1949 #ifdef CONFIG_VHT_OVERRIDES
1950         { INT_RANGE(disable_vht, 0, 1) },
1951         { INT(vht_capa) },
1952         { INT(vht_capa_mask) },
1953         { INT_RANGE(vht_rx_mcs_nss_1, -1, 3) },
1954         { INT_RANGE(vht_rx_mcs_nss_2, -1, 3) },
1955         { INT_RANGE(vht_rx_mcs_nss_3, -1, 3) },
1956         { INT_RANGE(vht_rx_mcs_nss_4, -1, 3) },
1957         { INT_RANGE(vht_rx_mcs_nss_5, -1, 3) },
1958         { INT_RANGE(vht_rx_mcs_nss_6, -1, 3) },
1959         { INT_RANGE(vht_rx_mcs_nss_7, -1, 3) },
1960         { INT_RANGE(vht_rx_mcs_nss_8, -1, 3) },
1961         { INT_RANGE(vht_tx_mcs_nss_1, -1, 3) },
1962         { INT_RANGE(vht_tx_mcs_nss_2, -1, 3) },
1963         { INT_RANGE(vht_tx_mcs_nss_3, -1, 3) },
1964         { INT_RANGE(vht_tx_mcs_nss_4, -1, 3) },
1965         { INT_RANGE(vht_tx_mcs_nss_5, -1, 3) },
1966         { INT_RANGE(vht_tx_mcs_nss_6, -1, 3) },
1967         { INT_RANGE(vht_tx_mcs_nss_7, -1, 3) },
1968         { INT_RANGE(vht_tx_mcs_nss_8, -1, 3) },
1969 #endif /* CONFIG_VHT_OVERRIDES */
1970         { INT(ap_max_inactivity) },
1971         { INT(dtim_period) },
1972         { INT(beacon_int) },
1973 #ifdef CONFIG_MACSEC
1974         { INT_RANGE(macsec_policy, 0, 1) },
1975 #endif /* CONFIG_MACSEC */
1976 #ifdef CONFIG_HS20
1977         { INT(update_identifier) },
1978 #endif /* CONFIG_HS20 */
1979         { INT_RANGE(mac_addr, 0, 2) },
1980 };
1981
1982 #undef OFFSET
1983 #undef _STR
1984 #undef STR
1985 #undef STR_KEY
1986 #undef _STR_LEN
1987 #undef STR_LEN
1988 #undef STR_LEN_KEY
1989 #undef _STR_RANGE
1990 #undef STR_RANGE
1991 #undef STR_RANGE_KEY
1992 #undef _INT
1993 #undef INT
1994 #undef INT_RANGE
1995 #undef _FUNC
1996 #undef FUNC
1997 #undef FUNC_KEY
1998 #define NUM_SSID_FIELDS ARRAY_SIZE(ssid_fields)
1999
2000
2001 /**
2002  * wpa_config_add_prio_network - Add a network to priority lists
2003  * @config: Configuration data from wpa_config_read()
2004  * @ssid: Pointer to the network configuration to be added to the list
2005  * Returns: 0 on success, -1 on failure
2006  *
2007  * This function is used to add a network block to the priority list of
2008  * networks. This must be called for each network when reading in the full
2009  * configuration. In addition, this can be used indirectly when updating
2010  * priorities by calling wpa_config_update_prio_list().
2011  */
2012 int wpa_config_add_prio_network(struct wpa_config *config,
2013                                 struct wpa_ssid *ssid)
2014 {
2015         int prio;
2016         struct wpa_ssid *prev, **nlist;
2017
2018         /*
2019          * Add to an existing priority list if one is available for the
2020          * configured priority level for this network.
2021          */
2022         for (prio = 0; prio < config->num_prio; prio++) {
2023                 prev = config->pssid[prio];
2024                 if (prev->priority == ssid->priority) {
2025                         while (prev->pnext)
2026                                 prev = prev->pnext;
2027                         prev->pnext = ssid;
2028                         return 0;
2029                 }
2030         }
2031
2032         /* First network for this priority - add a new priority list */
2033         nlist = os_realloc_array(config->pssid, config->num_prio + 1,
2034                                  sizeof(struct wpa_ssid *));
2035         if (nlist == NULL)
2036                 return -1;
2037
2038         for (prio = 0; prio < config->num_prio; prio++) {
2039                 if (nlist[prio]->priority < ssid->priority) {
2040                         os_memmove(&nlist[prio + 1], &nlist[prio],
2041                                    (config->num_prio - prio) *
2042                                    sizeof(struct wpa_ssid *));
2043                         break;
2044                 }
2045         }
2046
2047         nlist[prio] = ssid;
2048         config->num_prio++;
2049         config->pssid = nlist;
2050
2051         return 0;
2052 }
2053
2054
2055 /**
2056  * wpa_config_update_prio_list - Update network priority list
2057  * @config: Configuration data from wpa_config_read()
2058  * Returns: 0 on success, -1 on failure
2059  *
2060  * This function is called to update the priority list of networks in the
2061  * configuration when a network is being added or removed. This is also called
2062  * if a priority for a network is changed.
2063  */
2064 int wpa_config_update_prio_list(struct wpa_config *config)
2065 {
2066         struct wpa_ssid *ssid;
2067         int ret = 0;
2068
2069         os_free(config->pssid);
2070         config->pssid = NULL;
2071         config->num_prio = 0;
2072
2073         ssid = config->ssid;
2074         while (ssid) {
2075                 ssid->pnext = NULL;
2076                 if (wpa_config_add_prio_network(config, ssid) < 0)
2077                         ret = -1;
2078                 ssid = ssid->next;
2079         }
2080
2081         return ret;
2082 }
2083
2084
2085 #ifdef IEEE8021X_EAPOL
2086 static void eap_peer_config_free(struct eap_peer_config *eap)
2087 {
2088         os_free(eap->eap_methods);
2089         bin_clear_free(eap->identity, eap->identity_len);
2090         os_free(eap->anonymous_identity);
2091         bin_clear_free(eap->password, eap->password_len);
2092         os_free(eap->ca_cert);
2093         os_free(eap->ca_path);
2094         os_free(eap->client_cert);
2095         os_free(eap->private_key);
2096         str_clear_free(eap->private_key_passwd);
2097         os_free(eap->dh_file);
2098         os_free(eap->subject_match);
2099         os_free(eap->altsubject_match);
2100         os_free(eap->domain_suffix_match);
2101         os_free(eap->domain_match);
2102         os_free(eap->ca_cert2);
2103         os_free(eap->ca_path2);
2104         os_free(eap->client_cert2);
2105         os_free(eap->private_key2);
2106         str_clear_free(eap->private_key2_passwd);
2107         os_free(eap->dh_file2);
2108         os_free(eap->subject_match2);
2109         os_free(eap->altsubject_match2);
2110         os_free(eap->domain_suffix_match2);
2111         os_free(eap->domain_match2);
2112         os_free(eap->phase1);
2113         os_free(eap->phase2);
2114         os_free(eap->pcsc);
2115         str_clear_free(eap->pin);
2116         os_free(eap->engine_id);
2117         os_free(eap->key_id);
2118         os_free(eap->cert_id);
2119         os_free(eap->ca_cert_id);
2120         os_free(eap->key2_id);
2121         os_free(eap->cert2_id);
2122         os_free(eap->ca_cert2_id);
2123         str_clear_free(eap->pin2);
2124         os_free(eap->engine2_id);
2125         os_free(eap->otp);
2126         os_free(eap->pending_req_otp);
2127         os_free(eap->pac_file);
2128         bin_clear_free(eap->new_password, eap->new_password_len);
2129         str_clear_free(eap->external_sim_resp);
2130         os_free(eap->openssl_ciphers);
2131 }
2132 #endif /* IEEE8021X_EAPOL */
2133
2134
2135 /**
2136  * wpa_config_free_ssid - Free network/ssid configuration data
2137  * @ssid: Configuration data for the network
2138  *
2139  * This function frees all resources allocated for the network configuration
2140  * data.
2141  */
2142 void wpa_config_free_ssid(struct wpa_ssid *ssid)
2143 {
2144         struct psk_list_entry *psk;
2145
2146         os_free(ssid->ssid);
2147         str_clear_free(ssid->passphrase);
2148         os_free(ssid->ext_psk);
2149 #ifdef IEEE8021X_EAPOL
2150         eap_peer_config_free(&ssid->eap);
2151 #endif /* IEEE8021X_EAPOL */
2152         os_free(ssid->id_str);
2153         os_free(ssid->scan_freq);
2154         os_free(ssid->freq_list);
2155         os_free(ssid->bgscan);
2156         os_free(ssid->p2p_client_list);
2157         os_free(ssid->bssid_blacklist);
2158         os_free(ssid->bssid_whitelist);
2159 #ifdef CONFIG_HT_OVERRIDES
2160         os_free(ssid->ht_mcs);
2161 #endif /* CONFIG_HT_OVERRIDES */
2162 #ifdef CONFIG_MESH
2163         os_free(ssid->mesh_basic_rates);
2164 #endif /* CONFIG_MESH */
2165         while ((psk = dl_list_first(&ssid->psk_list, struct psk_list_entry,
2166                                     list))) {
2167                 dl_list_del(&psk->list);
2168                 bin_clear_free(psk, sizeof(*psk));
2169         }
2170         bin_clear_free(ssid, sizeof(*ssid));
2171 }
2172
2173
2174 void wpa_config_free_cred(struct wpa_cred *cred)
2175 {
2176         size_t i;
2177
2178         os_free(cred->realm);
2179         str_clear_free(cred->username);
2180         str_clear_free(cred->password);
2181         os_free(cred->ca_cert);
2182         os_free(cred->client_cert);
2183         os_free(cred->private_key);
2184         str_clear_free(cred->private_key_passwd);
2185         os_free(cred->imsi);
2186         str_clear_free(cred->milenage);
2187         for (i = 0; i < cred->num_domain; i++)
2188                 os_free(cred->domain[i]);
2189         os_free(cred->domain);
2190         os_free(cred->domain_suffix_match);
2191         os_free(cred->eap_method);
2192         os_free(cred->phase1);
2193         os_free(cred->phase2);
2194         os_free(cred->excluded_ssid);
2195         os_free(cred->roaming_partner);
2196         os_free(cred->provisioning_sp);
2197         for (i = 0; i < cred->num_req_conn_capab; i++)
2198                 os_free(cred->req_conn_capab_port[i]);
2199         os_free(cred->req_conn_capab_port);
2200         os_free(cred->req_conn_capab_proto);
2201         os_free(cred);
2202 }
2203
2204
2205 void wpa_config_flush_blobs(struct wpa_config *config)
2206 {
2207 #ifndef CONFIG_NO_CONFIG_BLOBS
2208         struct wpa_config_blob *blob, *prev;
2209
2210         blob = config->blobs;
2211         config->blobs = NULL;
2212         while (blob) {
2213                 prev = blob;
2214                 blob = blob->next;
2215                 wpa_config_free_blob(prev);
2216         }
2217 #endif /* CONFIG_NO_CONFIG_BLOBS */
2218 }
2219
2220
2221 /**
2222  * wpa_config_free - Free configuration data
2223  * @config: Configuration data from wpa_config_read()
2224  *
2225  * This function frees all resources allocated for the configuration data by
2226  * wpa_config_read().
2227  */
2228 void wpa_config_free(struct wpa_config *config)
2229 {
2230         struct wpa_ssid *ssid, *prev = NULL;
2231         struct wpa_cred *cred, *cprev;
2232         int i;
2233
2234         ssid = config->ssid;
2235         while (ssid) {
2236                 prev = ssid;
2237                 ssid = ssid->next;
2238                 wpa_config_free_ssid(prev);
2239         }
2240
2241         cred = config->cred;
2242         while (cred) {
2243                 cprev = cred;
2244                 cred = cred->next;
2245                 wpa_config_free_cred(cprev);
2246         }
2247
2248         wpa_config_flush_blobs(config);
2249
2250         wpabuf_free(config->wps_vendor_ext_m1);
2251         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++)
2252                 wpabuf_free(config->wps_vendor_ext[i]);
2253         os_free(config->ctrl_interface);
2254         os_free(config->ctrl_interface_group);
2255         os_free(config->opensc_engine_path);
2256         os_free(config->pkcs11_engine_path);
2257         os_free(config->pkcs11_module_path);
2258         os_free(config->openssl_ciphers);
2259         os_free(config->pcsc_reader);
2260         str_clear_free(config->pcsc_pin);
2261         os_free(config->driver_param);
2262         os_free(config->device_name);
2263         os_free(config->manufacturer);
2264         os_free(config->model_name);
2265         os_free(config->model_number);
2266         os_free(config->serial_number);
2267         os_free(config->config_methods);
2268         os_free(config->p2p_ssid_postfix);
2269         os_free(config->pssid);
2270         os_free(config->p2p_pref_chan);
2271         os_free(config->p2p_no_go_freq.range);
2272         os_free(config->autoscan);
2273         os_free(config->freq_list);
2274         wpabuf_free(config->wps_nfc_dh_pubkey);
2275         wpabuf_free(config->wps_nfc_dh_privkey);
2276         wpabuf_free(config->wps_nfc_dev_pw);
2277         os_free(config->ext_password_backend);
2278         os_free(config->sae_groups);
2279         wpabuf_free(config->ap_vendor_elements);
2280         os_free(config->osu_dir);
2281         os_free(config->bgscan);
2282         os_free(config->wowlan_triggers);
2283         os_free(config->fst_group_id);
2284         os_free(config->sched_scan_plans);
2285
2286         os_free(config);
2287 }
2288
2289
2290 /**
2291  * wpa_config_foreach_network - Iterate over each configured network
2292  * @config: Configuration data from wpa_config_read()
2293  * @func: Callback function to process each network
2294  * @arg: Opaque argument to pass to callback function
2295  *
2296  * Iterate over the set of configured networks calling the specified
2297  * function for each item. We guard against callbacks removing the
2298  * supplied network.
2299  */
2300 void wpa_config_foreach_network(struct wpa_config *config,
2301                                 void (*func)(void *, struct wpa_ssid *),
2302                                 void *arg)
2303 {
2304         struct wpa_ssid *ssid, *next;
2305
2306         ssid = config->ssid;
2307         while (ssid) {
2308                 next = ssid->next;
2309                 func(arg, ssid);
2310                 ssid = next;
2311         }
2312 }
2313
2314
2315 /**
2316  * wpa_config_get_network - Get configured network based on id
2317  * @config: Configuration data from wpa_config_read()
2318  * @id: Unique network id to search for
2319  * Returns: Network configuration or %NULL if not found
2320  */
2321 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
2322 {
2323         struct wpa_ssid *ssid;
2324
2325         ssid = config->ssid;
2326         while (ssid) {
2327                 if (id == ssid->id)
2328                         break;
2329                 ssid = ssid->next;
2330         }
2331
2332         return ssid;
2333 }
2334
2335
2336 /**
2337  * wpa_config_add_network - Add a new network with empty configuration
2338  * @config: Configuration data from wpa_config_read()
2339  * Returns: The new network configuration or %NULL if operation failed
2340  */
2341 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
2342 {
2343         int id;
2344         struct wpa_ssid *ssid, *last = NULL;
2345
2346         id = -1;
2347         ssid = config->ssid;
2348         while (ssid) {
2349                 if (ssid->id > id)
2350                         id = ssid->id;
2351                 last = ssid;
2352                 ssid = ssid->next;
2353         }
2354         id++;
2355
2356         ssid = os_zalloc(sizeof(*ssid));
2357         if (ssid == NULL)
2358                 return NULL;
2359         ssid->id = id;
2360         dl_list_init(&ssid->psk_list);
2361         if (last)
2362                 last->next = ssid;
2363         else
2364                 config->ssid = ssid;
2365
2366         wpa_config_update_prio_list(config);
2367
2368         return ssid;
2369 }
2370
2371
2372 /**
2373  * wpa_config_remove_network - Remove a configured network based on id
2374  * @config: Configuration data from wpa_config_read()
2375  * @id: Unique network id to search for
2376  * Returns: 0 on success, or -1 if the network was not found
2377  */
2378 int wpa_config_remove_network(struct wpa_config *config, int id)
2379 {
2380         struct wpa_ssid *ssid, *prev = NULL;
2381
2382         ssid = config->ssid;
2383         while (ssid) {
2384                 if (id == ssid->id)
2385                         break;
2386                 prev = ssid;
2387                 ssid = ssid->next;
2388         }
2389
2390         if (ssid == NULL)
2391                 return -1;
2392
2393         if (prev)
2394                 prev->next = ssid->next;
2395         else
2396                 config->ssid = ssid->next;
2397
2398         wpa_config_update_prio_list(config);
2399         wpa_config_free_ssid(ssid);
2400         return 0;
2401 }
2402
2403
2404 /**
2405  * wpa_config_set_network_defaults - Set network default values
2406  * @ssid: Pointer to network configuration data
2407  */
2408 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
2409 {
2410         ssid->proto = DEFAULT_PROTO;
2411         ssid->pairwise_cipher = DEFAULT_PAIRWISE;
2412         ssid->group_cipher = DEFAULT_GROUP;
2413         ssid->key_mgmt = DEFAULT_KEY_MGMT;
2414         ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
2415 #ifdef IEEE8021X_EAPOL
2416         ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
2417         ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
2418         ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
2419         ssid->eap.sim_num = DEFAULT_USER_SELECTED_SIM;
2420 #endif /* IEEE8021X_EAPOL */
2421 #ifdef CONFIG_MESH
2422         ssid->dot11MeshMaxRetries = DEFAULT_MESH_MAX_RETRIES;
2423         ssid->dot11MeshRetryTimeout = DEFAULT_MESH_RETRY_TIMEOUT;
2424         ssid->dot11MeshConfirmTimeout = DEFAULT_MESH_CONFIRM_TIMEOUT;
2425         ssid->dot11MeshHoldingTimeout = DEFAULT_MESH_HOLDING_TIMEOUT;
2426 #endif /* CONFIG_MESH */
2427 #ifdef CONFIG_HT_OVERRIDES
2428         ssid->disable_ht = DEFAULT_DISABLE_HT;
2429         ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
2430         ssid->disable_sgi = DEFAULT_DISABLE_SGI;
2431         ssid->disable_ldpc = DEFAULT_DISABLE_LDPC;
2432         ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
2433         ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
2434         ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
2435 #endif /* CONFIG_HT_OVERRIDES */
2436 #ifdef CONFIG_VHT_OVERRIDES
2437         ssid->vht_rx_mcs_nss_1 = -1;
2438         ssid->vht_rx_mcs_nss_2 = -1;
2439         ssid->vht_rx_mcs_nss_3 = -1;
2440         ssid->vht_rx_mcs_nss_4 = -1;
2441         ssid->vht_rx_mcs_nss_5 = -1;
2442         ssid->vht_rx_mcs_nss_6 = -1;
2443         ssid->vht_rx_mcs_nss_7 = -1;
2444         ssid->vht_rx_mcs_nss_8 = -1;
2445         ssid->vht_tx_mcs_nss_1 = -1;
2446         ssid->vht_tx_mcs_nss_2 = -1;
2447         ssid->vht_tx_mcs_nss_3 = -1;
2448         ssid->vht_tx_mcs_nss_4 = -1;
2449         ssid->vht_tx_mcs_nss_5 = -1;
2450         ssid->vht_tx_mcs_nss_6 = -1;
2451         ssid->vht_tx_mcs_nss_7 = -1;
2452         ssid->vht_tx_mcs_nss_8 = -1;
2453 #endif /* CONFIG_VHT_OVERRIDES */
2454         ssid->proactive_key_caching = -1;
2455 #ifdef CONFIG_IEEE80211W
2456         ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
2457 #endif /* CONFIG_IEEE80211W */
2458         ssid->mac_addr = -1;
2459 }
2460
2461
2462 /**
2463  * wpa_config_set - Set a variable in network configuration
2464  * @ssid: Pointer to network configuration data
2465  * @var: Variable name, e.g., "ssid"
2466  * @value: Variable value
2467  * @line: Line number in configuration file or 0 if not used
2468  * Returns: 0 on success, -1 on failure
2469  *
2470  * This function can be used to set network configuration variables based on
2471  * both the configuration file and management interface input. The value
2472  * parameter must be in the same format as the text-based configuration file is
2473  * using. For example, strings are using double quotation marks.
2474  */
2475 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
2476                    int line)
2477 {
2478         size_t i;
2479         int ret = 0;
2480
2481         if (ssid == NULL || var == NULL || value == NULL)
2482                 return -1;
2483
2484         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2485                 const struct parse_data *field = &ssid_fields[i];
2486                 if (os_strcmp(var, field->name) != 0)
2487                         continue;
2488
2489                 if (field->parser(field, ssid, line, value)) {
2490                         if (line) {
2491                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
2492                                            "parse %s '%s'.", line, var, value);
2493                         }
2494                         ret = -1;
2495                 }
2496                 break;
2497         }
2498         if (i == NUM_SSID_FIELDS) {
2499                 if (line) {
2500                         wpa_printf(MSG_ERROR, "Line %d: unknown network field "
2501                                    "'%s'.", line, var);
2502                 }
2503                 ret = -1;
2504         }
2505
2506         return ret;
2507 }
2508
2509
2510 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
2511                           const char *value)
2512 {
2513         size_t len;
2514         char *buf;
2515         int ret;
2516
2517         len = os_strlen(value);
2518         buf = os_malloc(len + 3);
2519         if (buf == NULL)
2520                 return -1;
2521         buf[0] = '"';
2522         os_memcpy(buf + 1, value, len);
2523         buf[len + 1] = '"';
2524         buf[len + 2] = '\0';
2525         ret = wpa_config_set(ssid, var, buf, 0);
2526         os_free(buf);
2527         return ret;
2528 }
2529
2530
2531 /**
2532  * wpa_config_get_all - Get all options from network configuration
2533  * @ssid: Pointer to network configuration data
2534  * @get_keys: Determines if keys/passwords will be included in returned list
2535  *      (if they may be exported)
2536  * Returns: %NULL terminated list of all set keys and their values in the form
2537  * of [key1, val1, key2, val2, ... , NULL]
2538  *
2539  * This function can be used to get list of all configured network properties.
2540  * The caller is responsible for freeing the returned list and all its
2541  * elements.
2542  */
2543 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
2544 {
2545 #ifdef NO_CONFIG_WRITE
2546         return NULL;
2547 #else /* NO_CONFIG_WRITE */
2548         const struct parse_data *field;
2549         char *key, *value;
2550         size_t i;
2551         char **props;
2552         int fields_num;
2553
2554         get_keys = get_keys && ssid->export_keys;
2555
2556         props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
2557         if (!props)
2558                 return NULL;
2559
2560         fields_num = 0;
2561         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2562                 field = &ssid_fields[i];
2563                 if (field->key_data && !get_keys)
2564                         continue;
2565                 value = field->writer(field, ssid);
2566                 if (value == NULL)
2567                         continue;
2568                 if (os_strlen(value) == 0) {
2569                         os_free(value);
2570                         continue;
2571                 }
2572
2573                 key = os_strdup(field->name);
2574                 if (key == NULL) {
2575                         os_free(value);
2576                         goto err;
2577                 }
2578
2579                 props[fields_num * 2] = key;
2580                 props[fields_num * 2 + 1] = value;
2581
2582                 fields_num++;
2583         }
2584
2585         return props;
2586
2587 err:
2588         value = *props;
2589         while (value)
2590                 os_free(value++);
2591         os_free(props);
2592         return NULL;
2593 #endif /* NO_CONFIG_WRITE */
2594 }
2595
2596
2597 #ifndef NO_CONFIG_WRITE
2598 /**
2599  * wpa_config_get - Get a variable in network configuration
2600  * @ssid: Pointer to network configuration data
2601  * @var: Variable name, e.g., "ssid"
2602  * Returns: Value of the variable or %NULL on failure
2603  *
2604  * This function can be used to get network configuration variables. The
2605  * returned value is a copy of the configuration variable in text format, i.e,.
2606  * the same format that the text-based configuration file and wpa_config_set()
2607  * are using for the value. The caller is responsible for freeing the returned
2608  * value.
2609  */
2610 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
2611 {
2612         size_t i;
2613
2614         if (ssid == NULL || var == NULL)
2615                 return NULL;
2616
2617         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2618                 const struct parse_data *field = &ssid_fields[i];
2619                 if (os_strcmp(var, field->name) == 0)
2620                         return field->writer(field, ssid);
2621         }
2622
2623         return NULL;
2624 }
2625
2626
2627 /**
2628  * wpa_config_get_no_key - Get a variable in network configuration (no keys)
2629  * @ssid: Pointer to network configuration data
2630  * @var: Variable name, e.g., "ssid"
2631  * Returns: Value of the variable or %NULL on failure
2632  *
2633  * This function can be used to get network configuration variable like
2634  * wpa_config_get(). The only difference is that this functions does not expose
2635  * key/password material from the configuration. In case a key/password field
2636  * is requested, the returned value is an empty string or %NULL if the variable
2637  * is not set or "*" if the variable is set (regardless of its value). The
2638  * returned value is a copy of the configuration variable in text format, i.e,.
2639  * the same format that the text-based configuration file and wpa_config_set()
2640  * are using for the value. The caller is responsible for freeing the returned
2641  * value.
2642  */
2643 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
2644 {
2645         size_t i;
2646
2647         if (ssid == NULL || var == NULL)
2648                 return NULL;
2649
2650         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2651                 const struct parse_data *field = &ssid_fields[i];
2652                 if (os_strcmp(var, field->name) == 0) {
2653                         char *res = field->writer(field, ssid);
2654                         if (field->key_data) {
2655                                 if (res && res[0]) {
2656                                         wpa_printf(MSG_DEBUG, "Do not allow "
2657                                                    "key_data field to be "
2658                                                    "exposed");
2659                                         str_clear_free(res);
2660                                         return os_strdup("*");
2661                                 }
2662
2663                                 os_free(res);
2664                                 return NULL;
2665                         }
2666                         return res;
2667                 }
2668         }
2669
2670         return NULL;
2671 }
2672 #endif /* NO_CONFIG_WRITE */
2673
2674
2675 /**
2676  * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
2677  * @ssid: Pointer to network configuration data
2678  *
2679  * This function must be called to update WPA PSK when either SSID or the
2680  * passphrase has changed for the network configuration.
2681  */
2682 void wpa_config_update_psk(struct wpa_ssid *ssid)
2683 {
2684 #ifndef CONFIG_NO_PBKDF2
2685         pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
2686                     ssid->psk, PMK_LEN);
2687         wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
2688                         ssid->psk, PMK_LEN);
2689         ssid->psk_set = 1;
2690 #endif /* CONFIG_NO_PBKDF2 */
2691 }
2692
2693
2694 static int wpa_config_set_cred_req_conn_capab(struct wpa_cred *cred,
2695                                               const char *value)
2696 {
2697         u8 *proto;
2698         int **port;
2699         int *ports, *nports;
2700         const char *pos;
2701         unsigned int num_ports;
2702
2703         proto = os_realloc_array(cred->req_conn_capab_proto,
2704                                  cred->num_req_conn_capab + 1, sizeof(u8));
2705         if (proto == NULL)
2706                 return -1;
2707         cred->req_conn_capab_proto = proto;
2708
2709         port = os_realloc_array(cred->req_conn_capab_port,
2710                                 cred->num_req_conn_capab + 1, sizeof(int *));
2711         if (port == NULL)
2712                 return -1;
2713         cred->req_conn_capab_port = port;
2714
2715         proto[cred->num_req_conn_capab] = atoi(value);
2716
2717         pos = os_strchr(value, ':');
2718         if (pos == NULL) {
2719                 port[cred->num_req_conn_capab] = NULL;
2720                 cred->num_req_conn_capab++;
2721                 return 0;
2722         }
2723         pos++;
2724
2725         ports = NULL;
2726         num_ports = 0;
2727
2728         while (*pos) {
2729                 nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
2730                 if (nports == NULL) {
2731                         os_free(ports);
2732                         return -1;
2733                 }
2734                 ports = nports;
2735                 ports[num_ports++] = atoi(pos);
2736
2737                 pos = os_strchr(pos, ',');
2738                 if (pos == NULL)
2739                         break;
2740                 pos++;
2741         }
2742
2743         nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
2744         if (nports == NULL) {
2745                 os_free(ports);
2746                 return -1;
2747         }
2748         ports = nports;
2749         ports[num_ports] = -1;
2750
2751         port[cred->num_req_conn_capab] = ports;
2752         cred->num_req_conn_capab++;
2753         return 0;
2754 }
2755
2756
2757 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
2758                         const char *value, int line)
2759 {
2760         char *val;
2761         size_t len;
2762
2763         if (os_strcmp(var, "temporary") == 0) {
2764                 cred->temporary = atoi(value);
2765                 return 0;
2766         }
2767
2768         if (os_strcmp(var, "priority") == 0) {
2769                 cred->priority = atoi(value);
2770                 return 0;
2771         }
2772
2773         if (os_strcmp(var, "sp_priority") == 0) {
2774                 int prio = atoi(value);
2775                 if (prio < 0 || prio > 255)
2776                         return -1;
2777                 cred->sp_priority = prio;
2778                 return 0;
2779         }
2780
2781         if (os_strcmp(var, "pcsc") == 0) {
2782                 cred->pcsc = atoi(value);
2783                 return 0;
2784         }
2785
2786         if (os_strcmp(var, "eap") == 0) {
2787                 struct eap_method_type method;
2788                 method.method = eap_peer_get_type(value, &method.vendor);
2789                 if (method.vendor == EAP_VENDOR_IETF &&
2790                     method.method == EAP_TYPE_NONE) {
2791                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
2792                                    "for a credential", line, value);
2793                         return -1;
2794                 }
2795                 os_free(cred->eap_method);
2796                 cred->eap_method = os_malloc(sizeof(*cred->eap_method));
2797                 if (cred->eap_method == NULL)
2798                         return -1;
2799                 os_memcpy(cred->eap_method, &method, sizeof(method));
2800                 return 0;
2801         }
2802
2803         if (os_strcmp(var, "password") == 0 &&
2804             os_strncmp(value, "ext:", 4) == 0) {
2805                 str_clear_free(cred->password);
2806                 cred->password = os_strdup(value);
2807                 cred->ext_password = 1;
2808                 return 0;
2809         }
2810
2811         if (os_strcmp(var, "update_identifier") == 0) {
2812                 cred->update_identifier = atoi(value);
2813                 return 0;
2814         }
2815
2816         if (os_strcmp(var, "min_dl_bandwidth_home") == 0) {
2817                 cred->min_dl_bandwidth_home = atoi(value);
2818                 return 0;
2819         }
2820
2821         if (os_strcmp(var, "min_ul_bandwidth_home") == 0) {
2822                 cred->min_ul_bandwidth_home = atoi(value);
2823                 return 0;
2824         }
2825
2826         if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0) {
2827                 cred->min_dl_bandwidth_roaming = atoi(value);
2828                 return 0;
2829         }
2830
2831         if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0) {
2832                 cred->min_ul_bandwidth_roaming = atoi(value);
2833                 return 0;
2834         }
2835
2836         if (os_strcmp(var, "max_bss_load") == 0) {
2837                 cred->max_bss_load = atoi(value);
2838                 return 0;
2839         }
2840
2841         if (os_strcmp(var, "req_conn_capab") == 0)
2842                 return wpa_config_set_cred_req_conn_capab(cred, value);
2843
2844         if (os_strcmp(var, "ocsp") == 0) {
2845                 cred->ocsp = atoi(value);
2846                 return 0;
2847         }
2848
2849         if (os_strcmp(var, "sim_num") == 0) {
2850                 cred->sim_num = atoi(value);
2851                 return 0;
2852         }
2853
2854         val = wpa_config_parse_string(value, &len);
2855         if (val == NULL) {
2856                 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
2857                            "value '%s'.", line, var, value);
2858                 return -1;
2859         }
2860
2861         if (os_strcmp(var, "realm") == 0) {
2862                 os_free(cred->realm);
2863                 cred->realm = val;
2864                 return 0;
2865         }
2866
2867         if (os_strcmp(var, "username") == 0) {
2868                 str_clear_free(cred->username);
2869                 cred->username = val;
2870                 return 0;
2871         }
2872
2873         if (os_strcmp(var, "password") == 0) {
2874                 str_clear_free(cred->password);
2875                 cred->password = val;
2876                 cred->ext_password = 0;
2877                 return 0;
2878         }
2879
2880         if (os_strcmp(var, "ca_cert") == 0) {
2881                 os_free(cred->ca_cert);
2882                 cred->ca_cert = val;
2883                 return 0;
2884         }
2885
2886         if (os_strcmp(var, "client_cert") == 0) {
2887                 os_free(cred->client_cert);
2888                 cred->client_cert = val;
2889                 return 0;
2890         }
2891
2892         if (os_strcmp(var, "private_key") == 0) {
2893                 os_free(cred->private_key);
2894                 cred->private_key = val;
2895                 return 0;
2896         }
2897
2898         if (os_strcmp(var, "private_key_passwd") == 0) {
2899                 str_clear_free(cred->private_key_passwd);
2900                 cred->private_key_passwd = val;
2901                 return 0;
2902         }
2903
2904         if (os_strcmp(var, "imsi") == 0) {
2905                 os_free(cred->imsi);
2906                 cred->imsi = val;
2907                 return 0;
2908         }
2909
2910         if (os_strcmp(var, "milenage") == 0) {
2911                 str_clear_free(cred->milenage);
2912                 cred->milenage = val;
2913                 return 0;
2914         }
2915
2916         if (os_strcmp(var, "domain_suffix_match") == 0) {
2917                 os_free(cred->domain_suffix_match);
2918                 cred->domain_suffix_match = val;
2919                 return 0;
2920         }
2921
2922         if (os_strcmp(var, "domain") == 0) {
2923                 char **new_domain;
2924                 new_domain = os_realloc_array(cred->domain,
2925                                               cred->num_domain + 1,
2926                                               sizeof(char *));
2927                 if (new_domain == NULL) {
2928                         os_free(val);
2929                         return -1;
2930                 }
2931                 new_domain[cred->num_domain++] = val;
2932                 cred->domain = new_domain;
2933                 return 0;
2934         }
2935
2936         if (os_strcmp(var, "phase1") == 0) {
2937                 os_free(cred->phase1);
2938                 cred->phase1 = val;
2939                 return 0;
2940         }
2941
2942         if (os_strcmp(var, "phase2") == 0) {
2943                 os_free(cred->phase2);
2944                 cred->phase2 = val;
2945                 return 0;
2946         }
2947
2948         if (os_strcmp(var, "roaming_consortium") == 0) {
2949                 if (len < 3 || len > sizeof(cred->roaming_consortium)) {
2950                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2951                                    "roaming_consortium length %d (3..15 "
2952                                    "expected)", line, (int) len);
2953                         os_free(val);
2954                         return -1;
2955                 }
2956                 os_memcpy(cred->roaming_consortium, val, len);
2957                 cred->roaming_consortium_len = len;
2958                 os_free(val);
2959                 return 0;
2960         }
2961
2962         if (os_strcmp(var, "required_roaming_consortium") == 0) {
2963                 if (len < 3 || len > sizeof(cred->required_roaming_consortium))
2964                 {
2965                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2966                                    "required_roaming_consortium length %d "
2967                                    "(3..15 expected)", line, (int) len);
2968                         os_free(val);
2969                         return -1;
2970                 }
2971                 os_memcpy(cred->required_roaming_consortium, val, len);
2972                 cred->required_roaming_consortium_len = len;
2973                 os_free(val);
2974                 return 0;
2975         }
2976
2977         if (os_strcmp(var, "excluded_ssid") == 0) {
2978                 struct excluded_ssid *e;
2979
2980                 if (len > SSID_MAX_LEN) {
2981                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2982                                    "excluded_ssid length %d", line, (int) len);
2983                         os_free(val);
2984                         return -1;
2985                 }
2986
2987                 e = os_realloc_array(cred->excluded_ssid,
2988                                      cred->num_excluded_ssid + 1,
2989                                      sizeof(struct excluded_ssid));
2990                 if (e == NULL) {
2991                         os_free(val);
2992                         return -1;
2993                 }
2994                 cred->excluded_ssid = e;
2995
2996                 e = &cred->excluded_ssid[cred->num_excluded_ssid++];
2997                 os_memcpy(e->ssid, val, len);
2998                 e->ssid_len = len;
2999
3000                 os_free(val);
3001
3002                 return 0;
3003         }
3004
3005         if (os_strcmp(var, "roaming_partner") == 0) {
3006                 struct roaming_partner *p;
3007                 char *pos;
3008
3009                 p = os_realloc_array(cred->roaming_partner,
3010                                      cred->num_roaming_partner + 1,
3011                                      sizeof(struct roaming_partner));
3012                 if (p == NULL) {
3013                         os_free(val);
3014                         return -1;
3015                 }
3016                 cred->roaming_partner = p;
3017
3018                 p = &cred->roaming_partner[cred->num_roaming_partner];
3019
3020                 pos = os_strchr(val, ',');
3021                 if (pos == NULL) {
3022                         os_free(val);
3023                         return -1;
3024                 }
3025                 *pos++ = '\0';
3026                 if (pos - val - 1 >= (int) sizeof(p->fqdn)) {
3027                         os_free(val);
3028                         return -1;
3029                 }
3030                 os_memcpy(p->fqdn, val, pos - val);
3031
3032                 p->exact_match = atoi(pos);
3033
3034                 pos = os_strchr(pos, ',');
3035                 if (pos == NULL) {
3036                         os_free(val);
3037                         return -1;
3038                 }
3039                 *pos++ = '\0';
3040
3041                 p->priority = atoi(pos);
3042
3043                 pos = os_strchr(pos, ',');
3044                 if (pos == NULL) {
3045                         os_free(val);
3046                         return -1;
3047                 }
3048                 *pos++ = '\0';
3049
3050                 if (os_strlen(pos) >= sizeof(p->country)) {
3051                         os_free(val);
3052                         return -1;
3053                 }
3054                 os_memcpy(p->country, pos, os_strlen(pos) + 1);
3055
3056                 cred->num_roaming_partner++;
3057                 os_free(val);
3058
3059                 return 0;
3060         }
3061
3062         if (os_strcmp(var, "provisioning_sp") == 0) {
3063                 os_free(cred->provisioning_sp);
3064                 cred->provisioning_sp = val;
3065                 return 0;
3066         }
3067
3068         if (line) {
3069                 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
3070                            line, var);
3071         }
3072
3073         os_free(val);
3074
3075         return -1;
3076 }
3077
3078
3079 static char * alloc_int_str(int val)
3080 {
3081         const unsigned int bufsize = 20;
3082         char *buf;
3083         int res;
3084
3085         buf = os_malloc(bufsize);
3086         if (buf == NULL)
3087                 return NULL;
3088         res = os_snprintf(buf, bufsize, "%d", val);
3089         if (os_snprintf_error(bufsize, res)) {
3090                 os_free(buf);
3091                 buf = NULL;
3092         }
3093         return buf;
3094 }
3095
3096
3097 static char * alloc_strdup(const char *str)
3098 {
3099         if (str == NULL)
3100                 return NULL;
3101         return os_strdup(str);
3102 }
3103
3104
3105 char * wpa_config_get_cred_no_key(struct wpa_cred *cred, const char *var)
3106 {
3107         if (os_strcmp(var, "temporary") == 0)
3108                 return alloc_int_str(cred->temporary);
3109
3110         if (os_strcmp(var, "priority") == 0)
3111                 return alloc_int_str(cred->priority);
3112
3113         if (os_strcmp(var, "sp_priority") == 0)
3114                 return alloc_int_str(cred->sp_priority);
3115
3116         if (os_strcmp(var, "pcsc") == 0)
3117                 return alloc_int_str(cred->pcsc);
3118
3119         if (os_strcmp(var, "eap") == 0) {
3120                 if (!cred->eap_method)
3121                         return NULL;
3122                 return alloc_strdup(eap_get_name(cred->eap_method[0].vendor,
3123                                                  cred->eap_method[0].method));
3124         }
3125
3126         if (os_strcmp(var, "update_identifier") == 0)
3127                 return alloc_int_str(cred->update_identifier);
3128
3129         if (os_strcmp(var, "min_dl_bandwidth_home") == 0)
3130                 return alloc_int_str(cred->min_dl_bandwidth_home);
3131
3132         if (os_strcmp(var, "min_ul_bandwidth_home") == 0)
3133                 return alloc_int_str(cred->min_ul_bandwidth_home);
3134
3135         if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0)
3136                 return alloc_int_str(cred->min_dl_bandwidth_roaming);
3137
3138         if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0)
3139                 return alloc_int_str(cred->min_ul_bandwidth_roaming);
3140
3141         if (os_strcmp(var, "max_bss_load") == 0)
3142                 return alloc_int_str(cred->max_bss_load);
3143
3144         if (os_strcmp(var, "req_conn_capab") == 0) {
3145                 unsigned int i;
3146                 char *buf, *end, *pos;
3147                 int ret;
3148
3149                 if (!cred->num_req_conn_capab)
3150                         return NULL;
3151
3152                 buf = os_malloc(4000);
3153                 if (buf == NULL)
3154                         return NULL;
3155                 pos = buf;
3156                 end = pos + 4000;
3157                 for (i = 0; i < cred->num_req_conn_capab; i++) {
3158                         int *ports;
3159
3160                         ret = os_snprintf(pos, end - pos, "%s%u",
3161                                           i > 0 ? "\n" : "",
3162                                           cred->req_conn_capab_proto[i]);
3163                         if (os_snprintf_error(end - pos, ret))
3164                                 return buf;
3165                         pos += ret;
3166
3167                         ports = cred->req_conn_capab_port[i];
3168                         if (ports) {
3169                                 int j;
3170                                 for (j = 0; ports[j] != -1; j++) {
3171                                         ret = os_snprintf(pos, end - pos,
3172                                                           "%s%d",
3173                                                           j > 0 ? "," : ":",
3174                                                           ports[j]);
3175                                         if (os_snprintf_error(end - pos, ret))
3176                                                 return buf;
3177                                         pos += ret;
3178                                 }
3179                         }
3180                 }
3181
3182                 return buf;
3183         }
3184
3185         if (os_strcmp(var, "ocsp") == 0)
3186                 return alloc_int_str(cred->ocsp);
3187
3188         if (os_strcmp(var, "realm") == 0)
3189                 return alloc_strdup(cred->realm);
3190
3191         if (os_strcmp(var, "username") == 0)
3192                 return alloc_strdup(cred->username);
3193
3194         if (os_strcmp(var, "password") == 0) {
3195                 if (!cred->password)
3196                         return NULL;
3197                 return alloc_strdup("*");
3198         }
3199
3200         if (os_strcmp(var, "ca_cert") == 0)
3201                 return alloc_strdup(cred->ca_cert);
3202
3203         if (os_strcmp(var, "client_cert") == 0)
3204                 return alloc_strdup(cred->client_cert);
3205
3206         if (os_strcmp(var, "private_key") == 0)
3207                 return alloc_strdup(cred->private_key);
3208
3209         if (os_strcmp(var, "private_key_passwd") == 0) {
3210                 if (!cred->private_key_passwd)
3211                         return NULL;
3212                 return alloc_strdup("*");
3213         }
3214
3215         if (os_strcmp(var, "imsi") == 0)
3216                 return alloc_strdup(cred->imsi);
3217
3218         if (os_strcmp(var, "milenage") == 0) {
3219                 if (!(cred->milenage))
3220                         return NULL;
3221                 return alloc_strdup("*");
3222         }
3223
3224         if (os_strcmp(var, "domain_suffix_match") == 0)
3225                 return alloc_strdup(cred->domain_suffix_match);
3226
3227         if (os_strcmp(var, "domain") == 0) {
3228                 unsigned int i;
3229                 char *buf, *end, *pos;
3230                 int ret;
3231
3232                 if (!cred->num_domain)
3233                         return NULL;
3234
3235                 buf = os_malloc(4000);
3236                 if (buf == NULL)
3237                         return NULL;
3238                 pos = buf;
3239                 end = pos + 4000;
3240
3241                 for (i = 0; i < cred->num_domain; i++) {
3242                         ret = os_snprintf(pos, end - pos, "%s%s",
3243                                           i > 0 ? "\n" : "", cred->domain[i]);
3244                         if (os_snprintf_error(end - pos, ret))
3245                                 return buf;
3246                         pos += ret;
3247                 }
3248
3249                 return buf;
3250         }
3251
3252         if (os_strcmp(var, "phase1") == 0)
3253                 return alloc_strdup(cred->phase1);
3254
3255         if (os_strcmp(var, "phase2") == 0)
3256                 return alloc_strdup(cred->phase2);
3257
3258         if (os_strcmp(var, "roaming_consortium") == 0) {
3259                 size_t buflen;
3260                 char *buf;
3261
3262                 if (!cred->roaming_consortium_len)
3263                         return NULL;
3264                 buflen = cred->roaming_consortium_len * 2 + 1;
3265                 buf = os_malloc(buflen);
3266                 if (buf == NULL)
3267                         return NULL;
3268                 wpa_snprintf_hex(buf, buflen, cred->roaming_consortium,
3269                                  cred->roaming_consortium_len);
3270                 return buf;
3271         }
3272
3273         if (os_strcmp(var, "required_roaming_consortium") == 0) {
3274                 size_t buflen;
3275                 char *buf;
3276
3277                 if (!cred->required_roaming_consortium_len)
3278                         return NULL;
3279                 buflen = cred->required_roaming_consortium_len * 2 + 1;
3280                 buf = os_malloc(buflen);
3281                 if (buf == NULL)
3282                         return NULL;
3283                 wpa_snprintf_hex(buf, buflen, cred->required_roaming_consortium,
3284                                  cred->required_roaming_consortium_len);
3285                 return buf;
3286         }
3287
3288         if (os_strcmp(var, "excluded_ssid") == 0) {
3289                 unsigned int i;
3290                 char *buf, *end, *pos;
3291
3292                 if (!cred->num_excluded_ssid)
3293                         return NULL;
3294
3295                 buf = os_malloc(4000);
3296                 if (buf == NULL)
3297                         return NULL;
3298                 pos = buf;
3299                 end = pos + 4000;
3300
3301                 for (i = 0; i < cred->num_excluded_ssid; i++) {
3302                         struct excluded_ssid *e;
3303                         int ret;
3304
3305                         e = &cred->excluded_ssid[i];
3306                         ret = os_snprintf(pos, end - pos, "%s%s",
3307                                           i > 0 ? "\n" : "",
3308                                           wpa_ssid_txt(e->ssid, e->ssid_len));
3309                         if (os_snprintf_error(end - pos, ret))
3310                                 return buf;
3311                         pos += ret;
3312                 }
3313
3314                 return buf;
3315         }
3316
3317         if (os_strcmp(var, "roaming_partner") == 0) {
3318                 unsigned int i;
3319                 char *buf, *end, *pos;
3320
3321                 if (!cred->num_roaming_partner)
3322                         return NULL;
3323
3324                 buf = os_malloc(4000);
3325                 if (buf == NULL)
3326                         return NULL;
3327                 pos = buf;
3328                 end = pos + 4000;
3329
3330                 for (i = 0; i < cred->num_roaming_partner; i++) {
3331                         struct roaming_partner *p;
3332                         int ret;
3333
3334                         p = &cred->roaming_partner[i];
3335                         ret = os_snprintf(pos, end - pos, "%s%s,%d,%u,%s",
3336                                           i > 0 ? "\n" : "",
3337                                           p->fqdn, p->exact_match, p->priority,
3338                                           p->country);
3339                         if (os_snprintf_error(end - pos, ret))
3340                                 return buf;
3341                         pos += ret;
3342                 }
3343
3344                 return buf;
3345         }
3346
3347         if (os_strcmp(var, "provisioning_sp") == 0)
3348                 return alloc_strdup(cred->provisioning_sp);
3349
3350         return NULL;
3351 }
3352
3353
3354 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
3355 {
3356         struct wpa_cred *cred;
3357
3358         cred = config->cred;
3359         while (cred) {
3360                 if (id == cred->id)
3361                         break;
3362                 cred = cred->next;
3363         }
3364
3365         return cred;
3366 }
3367
3368
3369 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
3370 {
3371         int id;
3372         struct wpa_cred *cred, *last = NULL;
3373
3374         id = -1;
3375         cred = config->cred;
3376         while (cred) {
3377                 if (cred->id > id)
3378                         id = cred->id;
3379                 last = cred;
3380                 cred = cred->next;
3381         }
3382         id++;
3383
3384         cred = os_zalloc(sizeof(*cred));
3385         if (cred == NULL)
3386                 return NULL;
3387         cred->id = id;
3388         cred->sim_num = DEFAULT_USER_SELECTED_SIM;
3389         if (last)
3390                 last->next = cred;
3391         else
3392                 config->cred = cred;
3393
3394         return cred;
3395 }
3396
3397
3398 int wpa_config_remove_cred(struct wpa_config *config, int id)
3399 {
3400         struct wpa_cred *cred, *prev = NULL;
3401
3402         cred = config->cred;
3403         while (cred) {
3404                 if (id == cred->id)
3405                         break;
3406                 prev = cred;
3407                 cred = cred->next;
3408         }
3409
3410         if (cred == NULL)
3411                 return -1;
3412
3413         if (prev)
3414                 prev->next = cred->next;
3415         else
3416                 config->cred = cred->next;
3417
3418         wpa_config_free_cred(cred);
3419         return 0;
3420 }
3421
3422
3423 #ifndef CONFIG_NO_CONFIG_BLOBS
3424 /**
3425  * wpa_config_get_blob - Get a named configuration blob
3426  * @config: Configuration data from wpa_config_read()
3427  * @name: Name of the blob
3428  * Returns: Pointer to blob data or %NULL if not found
3429  */
3430 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
3431                                                    const char *name)
3432 {
3433         struct wpa_config_blob *blob = config->blobs;
3434
3435         while (blob) {
3436                 if (os_strcmp(blob->name, name) == 0)
3437                         return blob;
3438                 blob = blob->next;
3439         }
3440         return NULL;
3441 }
3442
3443
3444 /**
3445  * wpa_config_set_blob - Set or add a named configuration blob
3446  * @config: Configuration data from wpa_config_read()
3447  * @blob: New value for the blob
3448  *
3449  * Adds a new configuration blob or replaces the current value of an existing
3450  * blob.
3451  */
3452 void wpa_config_set_blob(struct wpa_config *config,
3453                          struct wpa_config_blob *blob)
3454 {
3455         wpa_config_remove_blob(config, blob->name);
3456         blob->next = config->blobs;
3457         config->blobs = blob;
3458 }
3459
3460
3461 /**
3462  * wpa_config_free_blob - Free blob data
3463  * @blob: Pointer to blob to be freed
3464  */
3465 void wpa_config_free_blob(struct wpa_config_blob *blob)
3466 {
3467         if (blob) {
3468                 os_free(blob->name);
3469                 bin_clear_free(blob->data, blob->len);
3470                 os_free(blob);
3471         }
3472 }
3473
3474
3475 /**
3476  * wpa_config_remove_blob - Remove a named configuration blob
3477  * @config: Configuration data from wpa_config_read()
3478  * @name: Name of the blob to remove
3479  * Returns: 0 if blob was removed or -1 if blob was not found
3480  */
3481 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
3482 {
3483         struct wpa_config_blob *pos = config->blobs, *prev = NULL;
3484
3485         while (pos) {
3486                 if (os_strcmp(pos->name, name) == 0) {
3487                         if (prev)
3488                                 prev->next = pos->next;
3489                         else
3490                                 config->blobs = pos->next;
3491                         wpa_config_free_blob(pos);
3492                         return 0;
3493                 }
3494                 prev = pos;
3495                 pos = pos->next;
3496         }
3497
3498         return -1;
3499 }
3500 #endif /* CONFIG_NO_CONFIG_BLOBS */
3501
3502
3503 /**
3504  * wpa_config_alloc_empty - Allocate an empty configuration
3505  * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
3506  * socket
3507  * @driver_param: Driver parameters
3508  * Returns: Pointer to allocated configuration data or %NULL on failure
3509  */
3510 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
3511                                            const char *driver_param)
3512 {
3513         struct wpa_config *config;
3514         const int aCWmin = 4, aCWmax = 10;
3515         const struct hostapd_wmm_ac_params ac_bk =
3516                 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
3517         const struct hostapd_wmm_ac_params ac_be =
3518                 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
3519         const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
3520                 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
3521         const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
3522                 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
3523
3524         config = os_zalloc(sizeof(*config));
3525         if (config == NULL)
3526                 return NULL;
3527         config->eapol_version = DEFAULT_EAPOL_VERSION;
3528         config->ap_scan = DEFAULT_AP_SCAN;
3529         config->user_mpm = DEFAULT_USER_MPM;
3530         config->max_peer_links = DEFAULT_MAX_PEER_LINKS;
3531         config->mesh_max_inactivity = DEFAULT_MESH_MAX_INACTIVITY;
3532         config->dot11RSNASAERetransPeriod =
3533                 DEFAULT_DOT11_RSNA_SAE_RETRANS_PERIOD;
3534         config->fast_reauth = DEFAULT_FAST_REAUTH;
3535         config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
3536         config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
3537         config->p2p_go_freq_change_policy = DEFAULT_P2P_GO_FREQ_MOVE;
3538         config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
3539         config->p2p_optimize_listen_chan = DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN;
3540         config->p2p_go_ctwindow = DEFAULT_P2P_GO_CTWINDOW;
3541         config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
3542         config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
3543         config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
3544         config->max_num_sta = DEFAULT_MAX_NUM_STA;
3545         config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
3546         config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
3547         config->wmm_ac_params[0] = ac_be;
3548         config->wmm_ac_params[1] = ac_bk;
3549         config->wmm_ac_params[2] = ac_vi;
3550         config->wmm_ac_params[3] = ac_vo;
3551         config->p2p_search_delay = DEFAULT_P2P_SEARCH_DELAY;
3552         config->rand_addr_lifetime = DEFAULT_RAND_ADDR_LIFETIME;
3553         config->key_mgmt_offload = DEFAULT_KEY_MGMT_OFFLOAD;
3554         config->cert_in_cb = DEFAULT_CERT_IN_CB;
3555         config->wpa_rsc_relaxation = DEFAULT_WPA_RSC_RELAXATION;
3556
3557         if (ctrl_interface)
3558                 config->ctrl_interface = os_strdup(ctrl_interface);
3559         if (driver_param)
3560                 config->driver_param = os_strdup(driver_param);
3561
3562         return config;
3563 }
3564
3565
3566 #ifndef CONFIG_NO_STDOUT_DEBUG
3567 /**
3568  * wpa_config_debug_dump_networks - Debug dump of configured networks
3569  * @config: Configuration data from wpa_config_read()
3570  */
3571 void wpa_config_debug_dump_networks(struct wpa_config *config)
3572 {
3573         int prio;
3574         struct wpa_ssid *ssid;
3575
3576         for (prio = 0; prio < config->num_prio; prio++) {
3577                 ssid = config->pssid[prio];
3578                 wpa_printf(MSG_DEBUG, "Priority group %d",
3579                            ssid->priority);
3580                 while (ssid) {
3581                         wpa_printf(MSG_DEBUG, "   id=%d ssid='%s'",
3582                                    ssid->id,
3583                                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3584                         ssid = ssid->pnext;
3585                 }
3586         }
3587 }
3588 #endif /* CONFIG_NO_STDOUT_DEBUG */
3589
3590
3591 struct global_parse_data {
3592         char *name;
3593         int (*parser)(const struct global_parse_data *data,
3594                       struct wpa_config *config, int line, const char *value);
3595         int (*get)(const char *name, struct wpa_config *config, long offset,
3596                    char *buf, size_t buflen, int pretty_print);
3597         void *param1, *param2, *param3;
3598         unsigned int changed_flag;
3599 };
3600
3601
3602 static int wpa_global_config_parse_int(const struct global_parse_data *data,
3603                                        struct wpa_config *config, int line,
3604                                        const char *pos)
3605 {
3606         int val, *dst;
3607         char *end;
3608
3609         dst = (int *) (((u8 *) config) + (long) data->param1);
3610         val = strtol(pos, &end, 0);
3611         if (*end) {
3612                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
3613                            line, pos);
3614                 return -1;
3615         }
3616         *dst = val;
3617
3618         wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
3619
3620         if (data->param2 && *dst < (long) data->param2) {
3621                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
3622                            "min_value=%ld)", line, data->name, *dst,
3623                            (long) data->param2);
3624                 *dst = (long) data->param2;
3625                 return -1;
3626         }
3627
3628         if (data->param3 && *dst > (long) data->param3) {
3629                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
3630                            "max_value=%ld)", line, data->name, *dst,
3631                            (long) data->param3);
3632                 *dst = (long) data->param3;
3633                 return -1;
3634         }
3635
3636         return 0;
3637 }
3638
3639
3640 static int wpa_global_config_parse_str(const struct global_parse_data *data,
3641                                        struct wpa_config *config, int line,
3642                                        const char *pos)
3643 {
3644         size_t len;
3645         char **dst, *tmp;
3646
3647         len = os_strlen(pos);
3648         if (data->param2 && len < (size_t) data->param2) {
3649                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
3650                            "min_len=%ld)", line, data->name,
3651                            (unsigned long) len, (long) data->param2);
3652                 return -1;
3653         }
3654
3655         if (data->param3 && len > (size_t) data->param3) {
3656                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
3657                            "max_len=%ld)", line, data->name,
3658                            (unsigned long) len, (long) data->param3);
3659                 return -1;
3660         }
3661
3662         tmp = os_strdup(pos);
3663         if (tmp == NULL)
3664                 return -1;
3665
3666         dst = (char **) (((u8 *) config) + (long) data->param1);
3667         os_free(*dst);
3668         *dst = tmp;
3669         wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
3670
3671         return 0;
3672 }
3673
3674
3675 static int wpa_config_process_bgscan(const struct global_parse_data *data,
3676                                      struct wpa_config *config, int line,
3677                                      const char *pos)
3678 {
3679         size_t len;
3680         char *tmp;
3681         int res;
3682
3683         tmp = wpa_config_parse_string(pos, &len);
3684         if (tmp == NULL) {
3685                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s",
3686                            line, data->name);
3687                 return -1;
3688         }
3689
3690         res = wpa_global_config_parse_str(data, config, line, tmp);
3691         os_free(tmp);
3692         return res;
3693 }
3694
3695
3696 static int wpa_global_config_parse_bin(const struct global_parse_data *data,
3697                                        struct wpa_config *config, int line,
3698                                        const char *pos)
3699 {
3700         size_t len;
3701         struct wpabuf **dst, *tmp;
3702
3703         len = os_strlen(pos);
3704         if (len & 0x01)
3705                 return -1;
3706
3707         tmp = wpabuf_alloc(len / 2);
3708         if (tmp == NULL)
3709                 return -1;
3710
3711         if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) {
3712                 wpabuf_free(tmp);
3713                 return -1;
3714         }
3715
3716         dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
3717         wpabuf_free(*dst);
3718         *dst = tmp;
3719         wpa_printf(MSG_DEBUG, "%s", data->name);
3720
3721         return 0;
3722 }
3723
3724
3725 static int wpa_config_process_freq_list(const struct global_parse_data *data,
3726                                         struct wpa_config *config, int line,
3727                                         const char *value)
3728 {
3729         int *freqs;
3730
3731         freqs = wpa_config_parse_int_array(value);
3732         if (freqs == NULL)
3733                 return -1;
3734         if (freqs[0] == 0) {
3735                 os_free(freqs);
3736                 freqs = NULL;
3737         }
3738         os_free(config->freq_list);
3739         config->freq_list = freqs;
3740         return 0;
3741 }
3742
3743
3744 #ifdef CONFIG_P2P
3745 static int wpa_global_config_parse_ipv4(const struct global_parse_data *data,
3746                                         struct wpa_config *config, int line,
3747                                         const char *pos)
3748 {
3749         u32 *dst;
3750         struct hostapd_ip_addr addr;
3751
3752         if (hostapd_parse_ip_addr(pos, &addr) < 0)
3753                 return -1;
3754         if (addr.af != AF_INET)
3755                 return -1;
3756
3757         dst = (u32 *) (((u8 *) config) + (long) data->param1);
3758         os_memcpy(dst, &addr.u.v4.s_addr, 4);
3759         wpa_printf(MSG_DEBUG, "%s = 0x%x", data->name,
3760                    WPA_GET_BE32((u8 *) dst));
3761
3762         return 0;
3763 }
3764 #endif /* CONFIG_P2P */
3765
3766
3767 static int wpa_config_process_country(const struct global_parse_data *data,
3768                                       struct wpa_config *config, int line,
3769                                       const char *pos)
3770 {
3771         if (!pos[0] || !pos[1]) {
3772                 wpa_printf(MSG_DEBUG, "Invalid country set");
3773                 return -1;
3774         }
3775         config->country[0] = pos[0];
3776         config->country[1] = pos[1];
3777         wpa_printf(MSG_DEBUG, "country='%c%c'",
3778                    config->country[0], config->country[1]);
3779         return 0;
3780 }
3781
3782
3783 static int wpa_config_process_load_dynamic_eap(
3784         const struct global_parse_data *data, struct wpa_config *config,
3785         int line, const char *so)
3786 {
3787         int ret;
3788         wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
3789         ret = eap_peer_method_load(so);
3790         if (ret == -2) {
3791                 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
3792                            "reloading.");
3793         } else if (ret) {
3794                 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
3795                            "method '%s'.", line, so);
3796                 return -1;
3797         }
3798
3799         return 0;
3800 }
3801
3802
3803 #ifdef CONFIG_WPS
3804
3805 static int wpa_config_process_uuid(const struct global_parse_data *data,
3806                                    struct wpa_config *config, int line,
3807                                    const char *pos)
3808 {
3809         char buf[40];
3810         if (uuid_str2bin(pos, config->uuid)) {
3811                 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
3812                 return -1;
3813         }
3814         uuid_bin2str(config->uuid, buf, sizeof(buf));
3815         wpa_printf(MSG_DEBUG, "uuid=%s", buf);
3816         return 0;
3817 }
3818
3819
3820 static int wpa_config_process_device_type(
3821         const struct global_parse_data *data,
3822         struct wpa_config *config, int line, const char *pos)
3823 {
3824         return wps_dev_type_str2bin(pos, config->device_type);
3825 }
3826
3827
3828 static int wpa_config_process_os_version(const struct global_parse_data *data,
3829                                          struct wpa_config *config, int line,
3830                                          const char *pos)
3831 {
3832         if (hexstr2bin(pos, config->os_version, 4)) {
3833                 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
3834                 return -1;
3835         }
3836         wpa_printf(MSG_DEBUG, "os_version=%08x",
3837                    WPA_GET_BE32(config->os_version));
3838         return 0;
3839 }
3840
3841
3842 static int wpa_config_process_wps_vendor_ext_m1(
3843         const struct global_parse_data *data,
3844         struct wpa_config *config, int line, const char *pos)
3845 {
3846         struct wpabuf *tmp;
3847         int len = os_strlen(pos) / 2;
3848         u8 *p;
3849
3850         if (!len) {
3851                 wpa_printf(MSG_ERROR, "Line %d: "
3852                            "invalid wps_vendor_ext_m1", line);
3853                 return -1;
3854         }
3855
3856         tmp = wpabuf_alloc(len);
3857         if (tmp) {
3858                 p = wpabuf_put(tmp, len);
3859
3860                 if (hexstr2bin(pos, p, len)) {
3861                         wpa_printf(MSG_ERROR, "Line %d: "
3862                                    "invalid wps_vendor_ext_m1", line);
3863                         wpabuf_free(tmp);
3864                         return -1;
3865                 }
3866
3867                 wpabuf_free(config->wps_vendor_ext_m1);
3868                 config->wps_vendor_ext_m1 = tmp;
3869         } else {
3870                 wpa_printf(MSG_ERROR, "Can not allocate "
3871                            "memory for wps_vendor_ext_m1");
3872                 return -1;
3873         }
3874
3875         return 0;
3876 }
3877
3878 #endif /* CONFIG_WPS */
3879
3880 #ifdef CONFIG_P2P
3881 static int wpa_config_process_sec_device_type(
3882         const struct global_parse_data *data,
3883         struct wpa_config *config, int line, const char *pos)
3884 {
3885         int idx;
3886
3887         if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
3888                 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
3889                            "items", line);
3890                 return -1;
3891         }
3892
3893         idx = config->num_sec_device_types;
3894
3895         if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
3896                 return -1;
3897
3898         config->num_sec_device_types++;
3899         return 0;
3900 }
3901
3902
3903 static int wpa_config_process_p2p_pref_chan(
3904         const struct global_parse_data *data,
3905         struct wpa_config *config, int line, const char *pos)
3906 {
3907         struct p2p_channel *pref = NULL, *n;
3908         unsigned int num = 0;
3909         const char *pos2;
3910         u8 op_class, chan;
3911
3912         /* format: class:chan,class:chan,... */
3913
3914         while (*pos) {
3915                 op_class = atoi(pos);
3916                 pos2 = os_strchr(pos, ':');
3917                 if (pos2 == NULL)
3918                         goto fail;
3919                 pos2++;
3920                 chan = atoi(pos2);
3921
3922                 n = os_realloc_array(pref, num + 1,
3923                                      sizeof(struct p2p_channel));
3924                 if (n == NULL)
3925                         goto fail;
3926                 pref = n;
3927                 pref[num].op_class = op_class;
3928                 pref[num].chan = chan;
3929                 num++;
3930
3931                 pos = os_strchr(pos2, ',');
3932                 if (pos == NULL)
3933                         break;
3934                 pos++;
3935         }
3936
3937         os_free(config->p2p_pref_chan);
3938         config->p2p_pref_chan = pref;
3939         config->num_p2p_pref_chan = num;
3940         wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
3941                     (u8 *) config->p2p_pref_chan,
3942                     config->num_p2p_pref_chan * sizeof(struct p2p_channel));
3943
3944         return 0;
3945
3946 fail:
3947         os_free(pref);
3948         wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
3949         return -1;
3950 }
3951
3952
3953 static int wpa_config_process_p2p_no_go_freq(
3954         const struct global_parse_data *data,
3955         struct wpa_config *config, int line, const char *pos)
3956 {
3957         int ret;
3958
3959         ret = freq_range_list_parse(&config->p2p_no_go_freq, pos);
3960         if (ret < 0) {
3961                 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_no_go_freq", line);
3962                 return -1;
3963         }
3964
3965         wpa_printf(MSG_DEBUG, "P2P: p2p_no_go_freq with %u items",
3966                    config->p2p_no_go_freq.num);
3967
3968         return 0;
3969 }
3970
3971 #endif /* CONFIG_P2P */
3972
3973
3974 static int wpa_config_process_hessid(
3975         const struct global_parse_data *data,
3976         struct wpa_config *config, int line, const char *pos)
3977 {
3978         if (hwaddr_aton2(pos, config->hessid) < 0) {
3979                 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
3980                            line, pos);
3981                 return -1;
3982         }
3983
3984         return 0;
3985 }
3986
3987
3988 static int wpa_config_process_sae_groups(
3989         const struct global_parse_data *data,
3990         struct wpa_config *config, int line, const char *pos)
3991 {
3992         int *groups = wpa_config_parse_int_array(pos);
3993         if (groups == NULL) {
3994                 wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'",
3995                            line, pos);
3996                 return -1;
3997         }
3998
3999         os_free(config->sae_groups);
4000         config->sae_groups = groups;
4001
4002         return 0;
4003 }
4004
4005
4006 static int wpa_config_process_ap_vendor_elements(
4007         const struct global_parse_data *data,
4008         struct wpa_config *config, int line, const char *pos)
4009 {
4010         struct wpabuf *tmp;
4011         int len = os_strlen(pos) / 2;
4012         u8 *p;
4013
4014         if (!len) {
4015                 wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements",
4016                            line);
4017                 return -1;
4018         }
4019
4020         tmp = wpabuf_alloc(len);
4021         if (tmp) {
4022                 p = wpabuf_put(tmp, len);
4023
4024                 if (hexstr2bin(pos, p, len)) {
4025                         wpa_printf(MSG_ERROR, "Line %d: invalid "
4026                                    "ap_vendor_elements", line);
4027                         wpabuf_free(tmp);
4028                         return -1;
4029                 }
4030
4031                 wpabuf_free(config->ap_vendor_elements);
4032                 config->ap_vendor_elements = tmp;
4033         } else {
4034                 wpa_printf(MSG_ERROR, "Cannot allocate memory for "
4035                            "ap_vendor_elements");
4036                 return -1;
4037         }
4038
4039         return 0;
4040 }
4041
4042
4043 #ifdef CONFIG_CTRL_IFACE
4044 static int wpa_config_process_no_ctrl_interface(
4045         const struct global_parse_data *data,
4046         struct wpa_config *config, int line, const char *pos)
4047 {
4048         wpa_printf(MSG_DEBUG, "no_ctrl_interface -> ctrl_interface=NULL");
4049         os_free(config->ctrl_interface);
4050         config->ctrl_interface = NULL;
4051         return 0;
4052 }
4053 #endif /* CONFIG_CTRL_IFACE */
4054
4055
4056 static int wpa_config_get_int(const char *name, struct wpa_config *config,
4057                               long offset, char *buf, size_t buflen,
4058                               int pretty_print)
4059 {
4060         int *val = (int *) (((u8 *) config) + (long) offset);
4061
4062         if (pretty_print)
4063                 return os_snprintf(buf, buflen, "%s=%d\n", name, *val);
4064         return os_snprintf(buf, buflen, "%d", *val);
4065 }
4066
4067
4068 static int wpa_config_get_str(const char *name, struct wpa_config *config,
4069                               long offset, char *buf, size_t buflen,
4070                               int pretty_print)
4071 {
4072         char **val = (char **) (((u8 *) config) + (long) offset);
4073         int res;
4074
4075         if (pretty_print)
4076                 res = os_snprintf(buf, buflen, "%s=%s\n", name,
4077                                   *val ? *val : "null");
4078         else if (!*val)
4079                 return -1;
4080         else
4081                 res = os_snprintf(buf, buflen, "%s", *val);
4082         if (os_snprintf_error(buflen, res))
4083                 res = -1;
4084
4085         return res;
4086 }
4087
4088
4089 #ifdef CONFIG_P2P
4090 static int wpa_config_get_ipv4(const char *name, struct wpa_config *config,
4091                                long offset, char *buf, size_t buflen,
4092                                int pretty_print)
4093 {
4094         void *val = ((u8 *) config) + (long) offset;
4095         int res;
4096         char addr[INET_ADDRSTRLEN];
4097
4098         if (!val || !inet_ntop(AF_INET, val, addr, sizeof(addr)))
4099                 return -1;
4100
4101         if (pretty_print)
4102                 res = os_snprintf(buf, buflen, "%s=%s\n", name, addr);
4103         else
4104                 res = os_snprintf(buf, buflen, "%s", addr);
4105
4106         if (os_snprintf_error(buflen, res))
4107                 res = -1;
4108
4109         return res;
4110 }
4111 #endif /* CONFIG_P2P */
4112
4113
4114 #ifdef OFFSET
4115 #undef OFFSET
4116 #endif /* OFFSET */
4117 /* OFFSET: Get offset of a variable within the wpa_config structure */
4118 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
4119
4120 #define FUNC(f) #f, wpa_config_process_ ## f, NULL, OFFSET(f), NULL, NULL
4121 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL, NULL
4122 #define _INT(f) #f, wpa_global_config_parse_int, wpa_config_get_int, OFFSET(f)
4123 #define INT(f) _INT(f), NULL, NULL
4124 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
4125 #define _STR(f) #f, wpa_global_config_parse_str, wpa_config_get_str, OFFSET(f)
4126 #define STR(f) _STR(f), NULL, NULL
4127 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
4128 #define BIN(f) #f, wpa_global_config_parse_bin, NULL, OFFSET(f), NULL, NULL
4129 #define IPV4(f) #f, wpa_global_config_parse_ipv4, wpa_config_get_ipv4,  \
4130         OFFSET(f), NULL, NULL
4131
4132 static const struct global_parse_data global_fields[] = {
4133 #ifdef CONFIG_CTRL_IFACE
4134         { STR(ctrl_interface), 0 },
4135         { FUNC_NO_VAR(no_ctrl_interface), 0 },
4136         { STR(ctrl_interface_group), 0 } /* deprecated */,
4137 #endif /* CONFIG_CTRL_IFACE */
4138 #ifdef CONFIG_MACSEC
4139         { INT_RANGE(eapol_version, 1, 3), 0 },
4140 #else /* CONFIG_MACSEC */
4141         { INT_RANGE(eapol_version, 1, 2), 0 },
4142 #endif /* CONFIG_MACSEC */
4143         { INT(ap_scan), 0 },
4144         { FUNC(bgscan), 0 },
4145 #ifdef CONFIG_MESH
4146         { INT(user_mpm), 0 },
4147         { INT_RANGE(max_peer_links, 0, 255), 0 },
4148         { INT(mesh_max_inactivity), 0 },
4149         { INT(dot11RSNASAERetransPeriod), 0 },
4150 #endif /* CONFIG_MESH */
4151         { INT(disable_scan_offload), 0 },
4152         { INT(fast_reauth), 0 },
4153         { STR(opensc_engine_path), 0 },
4154         { STR(pkcs11_engine_path), 0 },
4155         { STR(pkcs11_module_path), 0 },
4156         { STR(openssl_ciphers), 0 },
4157         { STR(pcsc_reader), 0 },
4158         { STR(pcsc_pin), 0 },
4159         { INT(external_sim), 0 },
4160         { STR(driver_param), 0 },
4161         { INT(dot11RSNAConfigPMKLifetime), 0 },
4162         { INT(dot11RSNAConfigPMKReauthThreshold), 0 },
4163         { INT(dot11RSNAConfigSATimeout), 0 },
4164 #ifndef CONFIG_NO_CONFIG_WRITE
4165         { INT(update_config), 0 },
4166 #endif /* CONFIG_NO_CONFIG_WRITE */
4167         { FUNC_NO_VAR(load_dynamic_eap), 0 },
4168 #ifdef CONFIG_WPS
4169         { FUNC(uuid), CFG_CHANGED_UUID },
4170         { STR_RANGE(device_name, 0, WPS_DEV_NAME_MAX_LEN),
4171           CFG_CHANGED_DEVICE_NAME },
4172         { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
4173         { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
4174         { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
4175         { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
4176         { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
4177         { FUNC(os_version), CFG_CHANGED_OS_VERSION },
4178         { STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
4179         { INT_RANGE(wps_cred_processing, 0, 2), 0 },
4180         { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
4181 #endif /* CONFIG_WPS */
4182 #ifdef CONFIG_P2P
4183         { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
4184         { INT(p2p_listen_reg_class), CFG_CHANGED_P2P_LISTEN_CHANNEL },
4185         { INT(p2p_listen_channel), CFG_CHANGED_P2P_LISTEN_CHANNEL },
4186         { INT(p2p_oper_reg_class), CFG_CHANGED_P2P_OPER_CHANNEL },
4187         { INT(p2p_oper_channel), CFG_CHANGED_P2P_OPER_CHANNEL },
4188         { INT_RANGE(p2p_go_intent, 0, 15), 0 },
4189         { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
4190         { INT_RANGE(persistent_reconnect, 0, 1), 0 },
4191         { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
4192         { INT(p2p_group_idle), 0 },
4193         { INT_RANGE(p2p_go_freq_change_policy, 0, P2P_GO_FREQ_MOVE_MAX), 0 },
4194         { INT_RANGE(p2p_passphrase_len, 8, 63),
4195           CFG_CHANGED_P2P_PASSPHRASE_LEN },
4196         { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
4197         { FUNC(p2p_no_go_freq), CFG_CHANGED_P2P_PREF_CHAN },
4198         { INT_RANGE(p2p_add_cli_chan, 0, 1), 0 },
4199         { INT_RANGE(p2p_optimize_listen_chan, 0, 1), 0 },
4200         { INT(p2p_go_ht40), 0 },
4201         { INT(p2p_go_vht), 0 },
4202         { INT(p2p_disabled), 0 },
4203         { INT_RANGE(p2p_go_ctwindow, 0, 127), 0 },
4204         { INT(p2p_no_group_iface), 0 },
4205         { INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 },
4206         { IPV4(ip_addr_go), 0 },
4207         { IPV4(ip_addr_mask), 0 },
4208         { IPV4(ip_addr_start), 0 },
4209         { IPV4(ip_addr_end), 0 },
4210         { INT_RANGE(p2p_cli_probe, 0, 1), 0 },
4211 #endif /* CONFIG_P2P */
4212         { FUNC(country), CFG_CHANGED_COUNTRY },
4213         { INT(bss_max_count), 0 },
4214         { INT(bss_expiration_age), 0 },
4215         { INT(bss_expiration_scan_count), 0 },
4216         { INT_RANGE(filter_ssids, 0, 1), 0 },
4217         { INT_RANGE(filter_rssi, -100, 0), 0 },
4218         { INT(max_num_sta), 0 },
4219         { INT_RANGE(disassoc_low_ack, 0, 1), 0 },
4220 #ifdef CONFIG_HS20
4221         { INT_RANGE(hs20, 0, 1), 0 },
4222 #endif /* CONFIG_HS20 */
4223         { INT_RANGE(interworking, 0, 1), 0 },
4224         { FUNC(hessid), 0 },
4225         { INT_RANGE(access_network_type, 0, 15), 0 },
4226         { INT_RANGE(pbc_in_m1, 0, 1), 0 },
4227         { STR(autoscan), 0 },
4228         { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff),
4229           CFG_CHANGED_NFC_PASSWORD_TOKEN },
4230         { BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
4231         { BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
4232         { BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN },
4233         { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
4234         { INT(p2p_go_max_inactivity), 0 },
4235         { INT_RANGE(auto_interworking, 0, 1), 0 },
4236         { INT(okc), 0 },
4237         { INT(pmf), 0 },
4238         { FUNC(sae_groups), 0 },
4239         { INT(dtim_period), 0 },
4240         { INT(beacon_int), 0 },
4241         { FUNC(ap_vendor_elements), 0 },
4242         { INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
4243         { FUNC(freq_list), 0 },
4244         { INT(scan_cur_freq), 0 },
4245         { INT(sched_scan_interval), 0 },
4246         { INT(tdls_external_control), 0},
4247         { STR(osu_dir), 0 },
4248         { STR(wowlan_triggers), 0 },
4249         { INT(p2p_search_delay), 0},
4250         { INT(mac_addr), 0 },
4251         { INT(rand_addr_lifetime), 0 },
4252         { INT(preassoc_mac_addr), 0 },
4253         { INT(key_mgmt_offload), 0},
4254         { INT(passive_scan), 0 },
4255         { INT(reassoc_same_bss_optim), 0 },
4256         { INT(wps_priority), 0},
4257 #ifdef CONFIG_FST
4258         { STR_RANGE(fst_group_id, 1, FST_MAX_GROUP_ID_LEN), 0 },
4259         { INT_RANGE(fst_priority, 1, FST_MAX_PRIO_VALUE), 0 },
4260         { INT_RANGE(fst_llt, 1, FST_MAX_LLT_MS), 0 },
4261 #endif /* CONFIG_FST */
4262         { INT_RANGE(wpa_rsc_relaxation, 0, 1), 0 },
4263         { STR(sched_scan_plans), 0 },
4264 };
4265
4266 #undef FUNC
4267 #undef _INT
4268 #undef INT
4269 #undef INT_RANGE
4270 #undef _STR
4271 #undef STR
4272 #undef STR_RANGE
4273 #undef BIN
4274 #undef IPV4
4275 #define NUM_GLOBAL_FIELDS ARRAY_SIZE(global_fields)
4276
4277
4278 int wpa_config_dump_values(struct wpa_config *config, char *buf, size_t buflen)
4279 {
4280         int result = 0;
4281         size_t i;
4282
4283         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
4284                 const struct global_parse_data *field = &global_fields[i];
4285                 int tmp;
4286
4287                 if (!field->get)
4288                         continue;
4289
4290                 tmp = field->get(field->name, config, (long) field->param1,
4291                                  buf, buflen, 1);
4292                 if (tmp < 0)
4293                         return -1;
4294                 buf += tmp;
4295                 buflen -= tmp;
4296                 result += tmp;
4297         }
4298         return result;
4299 }
4300
4301
4302 int wpa_config_get_value(const char *name, struct wpa_config *config,
4303                          char *buf, size_t buflen)
4304 {
4305         size_t i;
4306
4307         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
4308                 const struct global_parse_data *field = &global_fields[i];
4309
4310                 if (os_strcmp(name, field->name) != 0)
4311                         continue;
4312                 if (!field->get)
4313                         break;
4314                 return field->get(name, config, (long) field->param1,
4315                                   buf, buflen, 0);
4316         }
4317
4318         return -1;
4319 }
4320
4321
4322 int wpa_config_get_num_global_field_names(void)
4323 {
4324         return NUM_GLOBAL_FIELDS;
4325 }
4326
4327
4328 const char * wpa_config_get_global_field_name(unsigned int i, int *no_var)
4329 {
4330         if (i >= NUM_GLOBAL_FIELDS)
4331                 return NULL;
4332
4333         if (no_var)
4334                 *no_var = !global_fields[i].param1;
4335         return global_fields[i].name;
4336 }
4337
4338
4339 int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
4340 {
4341         size_t i;
4342         int ret = 0;
4343
4344         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
4345                 const struct global_parse_data *field = &global_fields[i];
4346                 size_t flen = os_strlen(field->name);
4347                 if (os_strncmp(pos, field->name, flen) != 0 ||
4348                     pos[flen] != '=')
4349                         continue;
4350
4351                 if (field->parser(field, config, line, pos + flen + 1)) {
4352                         wpa_printf(MSG_ERROR, "Line %d: failed to "
4353                                    "parse '%s'.", line, pos);
4354                         ret = -1;
4355                 }
4356                 if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN)
4357                         config->wps_nfc_pw_from_config = 1;
4358                 config->changed_parameters |= field->changed_flag;
4359                 break;
4360         }
4361         if (i == NUM_GLOBAL_FIELDS) {
4362 #ifdef CONFIG_AP
4363                 if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
4364                         char *tmp = os_strchr(pos, '=');
4365                         if (tmp == NULL) {
4366                                 if (line < 0)
4367                                         return -1;
4368                                 wpa_printf(MSG_ERROR, "Line %d: invalid line "
4369                                            "'%s'", line, pos);
4370                                 return -1;
4371                         }
4372                         *tmp++ = '\0';
4373                         if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
4374                                                   tmp)) {
4375                                 wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
4376                                            "AC item", line);
4377                                 return -1;
4378                         }
4379                 }
4380 #endif /* CONFIG_AP */
4381                 if (line < 0)
4382                         return -1;
4383                 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
4384                            line, pos);
4385                 ret = -1;
4386         }
4387
4388         return ret;
4389 }