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_ACS
1924         { INT_RANGE(acs, 0, 1) },
1925 #endif /* CONFIG_ACS */
1926 #ifdef CONFIG_MESH
1927         { FUNC(mesh_basic_rates) },
1928         { INT(dot11MeshMaxRetries) },
1929         { INT(dot11MeshRetryTimeout) },
1930         { INT(dot11MeshConfirmTimeout) },
1931         { INT(dot11MeshHoldingTimeout) },
1932 #endif /* CONFIG_MESH */
1933         { INT(wpa_ptk_rekey) },
1934         { STR(bgscan) },
1935         { INT_RANGE(ignore_broadcast_ssid, 0, 2) },
1936 #ifdef CONFIG_P2P
1937         { FUNC(go_p2p_dev_addr) },
1938         { FUNC(p2p_client_list) },
1939         { FUNC(psk_list) },
1940 #endif /* CONFIG_P2P */
1941 #ifdef CONFIG_HT_OVERRIDES
1942         { INT_RANGE(disable_ht, 0, 1) },
1943         { INT_RANGE(disable_ht40, -1, 1) },
1944         { INT_RANGE(disable_sgi, 0, 1) },
1945         { INT_RANGE(disable_ldpc, 0, 1) },
1946         { INT_RANGE(ht40_intolerant, 0, 1) },
1947         { INT_RANGE(disable_max_amsdu, -1, 1) },
1948         { INT_RANGE(ampdu_factor, -1, 3) },
1949         { INT_RANGE(ampdu_density, -1, 7) },
1950         { STR(ht_mcs) },
1951 #endif /* CONFIG_HT_OVERRIDES */
1952 #ifdef CONFIG_VHT_OVERRIDES
1953         { INT_RANGE(disable_vht, 0, 1) },
1954         { INT(vht_capa) },
1955         { INT(vht_capa_mask) },
1956         { INT_RANGE(vht_rx_mcs_nss_1, -1, 3) },
1957         { INT_RANGE(vht_rx_mcs_nss_2, -1, 3) },
1958         { INT_RANGE(vht_rx_mcs_nss_3, -1, 3) },
1959         { INT_RANGE(vht_rx_mcs_nss_4, -1, 3) },
1960         { INT_RANGE(vht_rx_mcs_nss_5, -1, 3) },
1961         { INT_RANGE(vht_rx_mcs_nss_6, -1, 3) },
1962         { INT_RANGE(vht_rx_mcs_nss_7, -1, 3) },
1963         { INT_RANGE(vht_rx_mcs_nss_8, -1, 3) },
1964         { INT_RANGE(vht_tx_mcs_nss_1, -1, 3) },
1965         { INT_RANGE(vht_tx_mcs_nss_2, -1, 3) },
1966         { INT_RANGE(vht_tx_mcs_nss_3, -1, 3) },
1967         { INT_RANGE(vht_tx_mcs_nss_4, -1, 3) },
1968         { INT_RANGE(vht_tx_mcs_nss_5, -1, 3) },
1969         { INT_RANGE(vht_tx_mcs_nss_6, -1, 3) },
1970         { INT_RANGE(vht_tx_mcs_nss_7, -1, 3) },
1971         { INT_RANGE(vht_tx_mcs_nss_8, -1, 3) },
1972 #endif /* CONFIG_VHT_OVERRIDES */
1973         { INT(ap_max_inactivity) },
1974         { INT(dtim_period) },
1975         { INT(beacon_int) },
1976 #ifdef CONFIG_MACSEC
1977         { INT_RANGE(macsec_policy, 0, 1) },
1978 #endif /* CONFIG_MACSEC */
1979 #ifdef CONFIG_HS20
1980         { INT(update_identifier) },
1981 #endif /* CONFIG_HS20 */
1982         { INT_RANGE(mac_addr, 0, 2) },
1983 };
1984
1985 #undef OFFSET
1986 #undef _STR
1987 #undef STR
1988 #undef STR_KEY
1989 #undef _STR_LEN
1990 #undef STR_LEN
1991 #undef STR_LEN_KEY
1992 #undef _STR_RANGE
1993 #undef STR_RANGE
1994 #undef STR_RANGE_KEY
1995 #undef _INT
1996 #undef INT
1997 #undef INT_RANGE
1998 #undef _FUNC
1999 #undef FUNC
2000 #undef FUNC_KEY
2001 #define NUM_SSID_FIELDS ARRAY_SIZE(ssid_fields)
2002
2003
2004 /**
2005  * wpa_config_add_prio_network - Add a network to priority lists
2006  * @config: Configuration data from wpa_config_read()
2007  * @ssid: Pointer to the network configuration to be added to the list
2008  * Returns: 0 on success, -1 on failure
2009  *
2010  * This function is used to add a network block to the priority list of
2011  * networks. This must be called for each network when reading in the full
2012  * configuration. In addition, this can be used indirectly when updating
2013  * priorities by calling wpa_config_update_prio_list().
2014  */
2015 int wpa_config_add_prio_network(struct wpa_config *config,
2016                                 struct wpa_ssid *ssid)
2017 {
2018         int prio;
2019         struct wpa_ssid *prev, **nlist;
2020
2021         /*
2022          * Add to an existing priority list if one is available for the
2023          * configured priority level for this network.
2024          */
2025         for (prio = 0; prio < config->num_prio; prio++) {
2026                 prev = config->pssid[prio];
2027                 if (prev->priority == ssid->priority) {
2028                         while (prev->pnext)
2029                                 prev = prev->pnext;
2030                         prev->pnext = ssid;
2031                         return 0;
2032                 }
2033         }
2034
2035         /* First network for this priority - add a new priority list */
2036         nlist = os_realloc_array(config->pssid, config->num_prio + 1,
2037                                  sizeof(struct wpa_ssid *));
2038         if (nlist == NULL)
2039                 return -1;
2040
2041         for (prio = 0; prio < config->num_prio; prio++) {
2042                 if (nlist[prio]->priority < ssid->priority) {
2043                         os_memmove(&nlist[prio + 1], &nlist[prio],
2044                                    (config->num_prio - prio) *
2045                                    sizeof(struct wpa_ssid *));
2046                         break;
2047                 }
2048         }
2049
2050         nlist[prio] = ssid;
2051         config->num_prio++;
2052         config->pssid = nlist;
2053
2054         return 0;
2055 }
2056
2057
2058 /**
2059  * wpa_config_update_prio_list - Update network priority list
2060  * @config: Configuration data from wpa_config_read()
2061  * Returns: 0 on success, -1 on failure
2062  *
2063  * This function is called to update the priority list of networks in the
2064  * configuration when a network is being added or removed. This is also called
2065  * if a priority for a network is changed.
2066  */
2067 int wpa_config_update_prio_list(struct wpa_config *config)
2068 {
2069         struct wpa_ssid *ssid;
2070         int ret = 0;
2071
2072         os_free(config->pssid);
2073         config->pssid = NULL;
2074         config->num_prio = 0;
2075
2076         ssid = config->ssid;
2077         while (ssid) {
2078                 ssid->pnext = NULL;
2079                 if (wpa_config_add_prio_network(config, ssid) < 0)
2080                         ret = -1;
2081                 ssid = ssid->next;
2082         }
2083
2084         return ret;
2085 }
2086
2087
2088 #ifdef IEEE8021X_EAPOL
2089 static void eap_peer_config_free(struct eap_peer_config *eap)
2090 {
2091         os_free(eap->eap_methods);
2092         bin_clear_free(eap->identity, eap->identity_len);
2093         os_free(eap->anonymous_identity);
2094         bin_clear_free(eap->password, eap->password_len);
2095         os_free(eap->ca_cert);
2096         os_free(eap->ca_path);
2097         os_free(eap->client_cert);
2098         os_free(eap->private_key);
2099         str_clear_free(eap->private_key_passwd);
2100         os_free(eap->dh_file);
2101         os_free(eap->subject_match);
2102         os_free(eap->altsubject_match);
2103         os_free(eap->domain_suffix_match);
2104         os_free(eap->domain_match);
2105         os_free(eap->ca_cert2);
2106         os_free(eap->ca_path2);
2107         os_free(eap->client_cert2);
2108         os_free(eap->private_key2);
2109         str_clear_free(eap->private_key2_passwd);
2110         os_free(eap->dh_file2);
2111         os_free(eap->subject_match2);
2112         os_free(eap->altsubject_match2);
2113         os_free(eap->domain_suffix_match2);
2114         os_free(eap->domain_match2);
2115         os_free(eap->phase1);
2116         os_free(eap->phase2);
2117         os_free(eap->pcsc);
2118         str_clear_free(eap->pin);
2119         os_free(eap->engine_id);
2120         os_free(eap->key_id);
2121         os_free(eap->cert_id);
2122         os_free(eap->ca_cert_id);
2123         os_free(eap->key2_id);
2124         os_free(eap->cert2_id);
2125         os_free(eap->ca_cert2_id);
2126         str_clear_free(eap->pin2);
2127         os_free(eap->engine2_id);
2128         os_free(eap->otp);
2129         os_free(eap->pending_req_otp);
2130         os_free(eap->pac_file);
2131         bin_clear_free(eap->new_password, eap->new_password_len);
2132         str_clear_free(eap->external_sim_resp);
2133         os_free(eap->openssl_ciphers);
2134 }
2135 #endif /* IEEE8021X_EAPOL */
2136
2137
2138 /**
2139  * wpa_config_free_ssid - Free network/ssid configuration data
2140  * @ssid: Configuration data for the network
2141  *
2142  * This function frees all resources allocated for the network configuration
2143  * data.
2144  */
2145 void wpa_config_free_ssid(struct wpa_ssid *ssid)
2146 {
2147         struct psk_list_entry *psk;
2148
2149         os_free(ssid->ssid);
2150         str_clear_free(ssid->passphrase);
2151         os_free(ssid->ext_psk);
2152 #ifdef IEEE8021X_EAPOL
2153         eap_peer_config_free(&ssid->eap);
2154 #endif /* IEEE8021X_EAPOL */
2155         os_free(ssid->id_str);
2156         os_free(ssid->scan_freq);
2157         os_free(ssid->freq_list);
2158         os_free(ssid->bgscan);
2159         os_free(ssid->p2p_client_list);
2160         os_free(ssid->bssid_blacklist);
2161         os_free(ssid->bssid_whitelist);
2162 #ifdef CONFIG_HT_OVERRIDES
2163         os_free(ssid->ht_mcs);
2164 #endif /* CONFIG_HT_OVERRIDES */
2165 #ifdef CONFIG_MESH
2166         os_free(ssid->mesh_basic_rates);
2167 #endif /* CONFIG_MESH */
2168         while ((psk = dl_list_first(&ssid->psk_list, struct psk_list_entry,
2169                                     list))) {
2170                 dl_list_del(&psk->list);
2171                 bin_clear_free(psk, sizeof(*psk));
2172         }
2173         bin_clear_free(ssid, sizeof(*ssid));
2174 }
2175
2176
2177 void wpa_config_free_cred(struct wpa_cred *cred)
2178 {
2179         size_t i;
2180
2181         os_free(cred->realm);
2182         str_clear_free(cred->username);
2183         str_clear_free(cred->password);
2184         os_free(cred->ca_cert);
2185         os_free(cred->client_cert);
2186         os_free(cred->private_key);
2187         str_clear_free(cred->private_key_passwd);
2188         os_free(cred->imsi);
2189         str_clear_free(cred->milenage);
2190         for (i = 0; i < cred->num_domain; i++)
2191                 os_free(cred->domain[i]);
2192         os_free(cred->domain);
2193         os_free(cred->domain_suffix_match);
2194         os_free(cred->eap_method);
2195         os_free(cred->phase1);
2196         os_free(cred->phase2);
2197         os_free(cred->excluded_ssid);
2198         os_free(cred->roaming_partner);
2199         os_free(cred->provisioning_sp);
2200         for (i = 0; i < cred->num_req_conn_capab; i++)
2201                 os_free(cred->req_conn_capab_port[i]);
2202         os_free(cred->req_conn_capab_port);
2203         os_free(cred->req_conn_capab_proto);
2204         os_free(cred);
2205 }
2206
2207
2208 void wpa_config_flush_blobs(struct wpa_config *config)
2209 {
2210 #ifndef CONFIG_NO_CONFIG_BLOBS
2211         struct wpa_config_blob *blob, *prev;
2212
2213         blob = config->blobs;
2214         config->blobs = NULL;
2215         while (blob) {
2216                 prev = blob;
2217                 blob = blob->next;
2218                 wpa_config_free_blob(prev);
2219         }
2220 #endif /* CONFIG_NO_CONFIG_BLOBS */
2221 }
2222
2223
2224 /**
2225  * wpa_config_free - Free configuration data
2226  * @config: Configuration data from wpa_config_read()
2227  *
2228  * This function frees all resources allocated for the configuration data by
2229  * wpa_config_read().
2230  */
2231 void wpa_config_free(struct wpa_config *config)
2232 {
2233         struct wpa_ssid *ssid, *prev = NULL;
2234         struct wpa_cred *cred, *cprev;
2235         int i;
2236
2237         ssid = config->ssid;
2238         while (ssid) {
2239                 prev = ssid;
2240                 ssid = ssid->next;
2241                 wpa_config_free_ssid(prev);
2242         }
2243
2244         cred = config->cred;
2245         while (cred) {
2246                 cprev = cred;
2247                 cred = cred->next;
2248                 wpa_config_free_cred(cprev);
2249         }
2250
2251         wpa_config_flush_blobs(config);
2252
2253         wpabuf_free(config->wps_vendor_ext_m1);
2254         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++)
2255                 wpabuf_free(config->wps_vendor_ext[i]);
2256         os_free(config->ctrl_interface);
2257         os_free(config->ctrl_interface_group);
2258         os_free(config->opensc_engine_path);
2259         os_free(config->pkcs11_engine_path);
2260         os_free(config->pkcs11_module_path);
2261         os_free(config->openssl_ciphers);
2262         os_free(config->pcsc_reader);
2263         str_clear_free(config->pcsc_pin);
2264         os_free(config->driver_param);
2265         os_free(config->device_name);
2266         os_free(config->manufacturer);
2267         os_free(config->model_name);
2268         os_free(config->model_number);
2269         os_free(config->serial_number);
2270         os_free(config->config_methods);
2271         os_free(config->p2p_ssid_postfix);
2272         os_free(config->pssid);
2273         os_free(config->p2p_pref_chan);
2274         os_free(config->p2p_no_go_freq.range);
2275         os_free(config->autoscan);
2276         os_free(config->freq_list);
2277         wpabuf_free(config->wps_nfc_dh_pubkey);
2278         wpabuf_free(config->wps_nfc_dh_privkey);
2279         wpabuf_free(config->wps_nfc_dev_pw);
2280         os_free(config->ext_password_backend);
2281         os_free(config->sae_groups);
2282         wpabuf_free(config->ap_vendor_elements);
2283         os_free(config->osu_dir);
2284         os_free(config->bgscan);
2285         os_free(config->wowlan_triggers);
2286         os_free(config->fst_group_id);
2287         os_free(config->sched_scan_plans);
2288
2289         os_free(config);
2290 }
2291
2292
2293 /**
2294  * wpa_config_foreach_network - Iterate over each configured network
2295  * @config: Configuration data from wpa_config_read()
2296  * @func: Callback function to process each network
2297  * @arg: Opaque argument to pass to callback function
2298  *
2299  * Iterate over the set of configured networks calling the specified
2300  * function for each item. We guard against callbacks removing the
2301  * supplied network.
2302  */
2303 void wpa_config_foreach_network(struct wpa_config *config,
2304                                 void (*func)(void *, struct wpa_ssid *),
2305                                 void *arg)
2306 {
2307         struct wpa_ssid *ssid, *next;
2308
2309         ssid = config->ssid;
2310         while (ssid) {
2311                 next = ssid->next;
2312                 func(arg, ssid);
2313                 ssid = next;
2314         }
2315 }
2316
2317
2318 /**
2319  * wpa_config_get_network - Get configured network based on id
2320  * @config: Configuration data from wpa_config_read()
2321  * @id: Unique network id to search for
2322  * Returns: Network configuration or %NULL if not found
2323  */
2324 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
2325 {
2326         struct wpa_ssid *ssid;
2327
2328         ssid = config->ssid;
2329         while (ssid) {
2330                 if (id == ssid->id)
2331                         break;
2332                 ssid = ssid->next;
2333         }
2334
2335         return ssid;
2336 }
2337
2338
2339 /**
2340  * wpa_config_add_network - Add a new network with empty configuration
2341  * @config: Configuration data from wpa_config_read()
2342  * Returns: The new network configuration or %NULL if operation failed
2343  */
2344 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
2345 {
2346         int id;
2347         struct wpa_ssid *ssid, *last = NULL;
2348
2349         id = -1;
2350         ssid = config->ssid;
2351         while (ssid) {
2352                 if (ssid->id > id)
2353                         id = ssid->id;
2354                 last = ssid;
2355                 ssid = ssid->next;
2356         }
2357         id++;
2358
2359         ssid = os_zalloc(sizeof(*ssid));
2360         if (ssid == NULL)
2361                 return NULL;
2362         ssid->id = id;
2363         dl_list_init(&ssid->psk_list);
2364         if (last)
2365                 last->next = ssid;
2366         else
2367                 config->ssid = ssid;
2368
2369         wpa_config_update_prio_list(config);
2370
2371         return ssid;
2372 }
2373
2374
2375 /**
2376  * wpa_config_remove_network - Remove a configured network based on id
2377  * @config: Configuration data from wpa_config_read()
2378  * @id: Unique network id to search for
2379  * Returns: 0 on success, or -1 if the network was not found
2380  */
2381 int wpa_config_remove_network(struct wpa_config *config, int id)
2382 {
2383         struct wpa_ssid *ssid, *prev = NULL;
2384
2385         ssid = config->ssid;
2386         while (ssid) {
2387                 if (id == ssid->id)
2388                         break;
2389                 prev = ssid;
2390                 ssid = ssid->next;
2391         }
2392
2393         if (ssid == NULL)
2394                 return -1;
2395
2396         if (prev)
2397                 prev->next = ssid->next;
2398         else
2399                 config->ssid = ssid->next;
2400
2401         wpa_config_update_prio_list(config);
2402         wpa_config_free_ssid(ssid);
2403         return 0;
2404 }
2405
2406
2407 /**
2408  * wpa_config_set_network_defaults - Set network default values
2409  * @ssid: Pointer to network configuration data
2410  */
2411 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
2412 {
2413         ssid->proto = DEFAULT_PROTO;
2414         ssid->pairwise_cipher = DEFAULT_PAIRWISE;
2415         ssid->group_cipher = DEFAULT_GROUP;
2416         ssid->key_mgmt = DEFAULT_KEY_MGMT;
2417         ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
2418 #ifdef IEEE8021X_EAPOL
2419         ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
2420         ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
2421         ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
2422         ssid->eap.sim_num = DEFAULT_USER_SELECTED_SIM;
2423 #endif /* IEEE8021X_EAPOL */
2424 #ifdef CONFIG_MESH
2425         ssid->dot11MeshMaxRetries = DEFAULT_MESH_MAX_RETRIES;
2426         ssid->dot11MeshRetryTimeout = DEFAULT_MESH_RETRY_TIMEOUT;
2427         ssid->dot11MeshConfirmTimeout = DEFAULT_MESH_CONFIRM_TIMEOUT;
2428         ssid->dot11MeshHoldingTimeout = DEFAULT_MESH_HOLDING_TIMEOUT;
2429 #endif /* CONFIG_MESH */
2430 #ifdef CONFIG_HT_OVERRIDES
2431         ssid->disable_ht = DEFAULT_DISABLE_HT;
2432         ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
2433         ssid->disable_sgi = DEFAULT_DISABLE_SGI;
2434         ssid->disable_ldpc = DEFAULT_DISABLE_LDPC;
2435         ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
2436         ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
2437         ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
2438 #endif /* CONFIG_HT_OVERRIDES */
2439 #ifdef CONFIG_VHT_OVERRIDES
2440         ssid->vht_rx_mcs_nss_1 = -1;
2441         ssid->vht_rx_mcs_nss_2 = -1;
2442         ssid->vht_rx_mcs_nss_3 = -1;
2443         ssid->vht_rx_mcs_nss_4 = -1;
2444         ssid->vht_rx_mcs_nss_5 = -1;
2445         ssid->vht_rx_mcs_nss_6 = -1;
2446         ssid->vht_rx_mcs_nss_7 = -1;
2447         ssid->vht_rx_mcs_nss_8 = -1;
2448         ssid->vht_tx_mcs_nss_1 = -1;
2449         ssid->vht_tx_mcs_nss_2 = -1;
2450         ssid->vht_tx_mcs_nss_3 = -1;
2451         ssid->vht_tx_mcs_nss_4 = -1;
2452         ssid->vht_tx_mcs_nss_5 = -1;
2453         ssid->vht_tx_mcs_nss_6 = -1;
2454         ssid->vht_tx_mcs_nss_7 = -1;
2455         ssid->vht_tx_mcs_nss_8 = -1;
2456 #endif /* CONFIG_VHT_OVERRIDES */
2457         ssid->proactive_key_caching = -1;
2458 #ifdef CONFIG_IEEE80211W
2459         ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
2460 #endif /* CONFIG_IEEE80211W */
2461         ssid->mac_addr = -1;
2462 }
2463
2464
2465 /**
2466  * wpa_config_set - Set a variable in network configuration
2467  * @ssid: Pointer to network configuration data
2468  * @var: Variable name, e.g., "ssid"
2469  * @value: Variable value
2470  * @line: Line number in configuration file or 0 if not used
2471  * Returns: 0 on success, -1 on failure
2472  *
2473  * This function can be used to set network configuration variables based on
2474  * both the configuration file and management interface input. The value
2475  * parameter must be in the same format as the text-based configuration file is
2476  * using. For example, strings are using double quotation marks.
2477  */
2478 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
2479                    int line)
2480 {
2481         size_t i;
2482         int ret = 0;
2483
2484         if (ssid == NULL || var == NULL || value == NULL)
2485                 return -1;
2486
2487         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2488                 const struct parse_data *field = &ssid_fields[i];
2489                 if (os_strcmp(var, field->name) != 0)
2490                         continue;
2491
2492                 if (field->parser(field, ssid, line, value)) {
2493                         if (line) {
2494                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
2495                                            "parse %s '%s'.", line, var, value);
2496                         }
2497                         ret = -1;
2498                 }
2499                 break;
2500         }
2501         if (i == NUM_SSID_FIELDS) {
2502                 if (line) {
2503                         wpa_printf(MSG_ERROR, "Line %d: unknown network field "
2504                                    "'%s'.", line, var);
2505                 }
2506                 ret = -1;
2507         }
2508
2509         return ret;
2510 }
2511
2512
2513 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
2514                           const char *value)
2515 {
2516         size_t len;
2517         char *buf;
2518         int ret;
2519
2520         len = os_strlen(value);
2521         buf = os_malloc(len + 3);
2522         if (buf == NULL)
2523                 return -1;
2524         buf[0] = '"';
2525         os_memcpy(buf + 1, value, len);
2526         buf[len + 1] = '"';
2527         buf[len + 2] = '\0';
2528         ret = wpa_config_set(ssid, var, buf, 0);
2529         os_free(buf);
2530         return ret;
2531 }
2532
2533
2534 /**
2535  * wpa_config_get_all - Get all options from network configuration
2536  * @ssid: Pointer to network configuration data
2537  * @get_keys: Determines if keys/passwords will be included in returned list
2538  *      (if they may be exported)
2539  * Returns: %NULL terminated list of all set keys and their values in the form
2540  * of [key1, val1, key2, val2, ... , NULL]
2541  *
2542  * This function can be used to get list of all configured network properties.
2543  * The caller is responsible for freeing the returned list and all its
2544  * elements.
2545  */
2546 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
2547 {
2548 #ifdef NO_CONFIG_WRITE
2549         return NULL;
2550 #else /* NO_CONFIG_WRITE */
2551         const struct parse_data *field;
2552         char *key, *value;
2553         size_t i;
2554         char **props;
2555         int fields_num;
2556
2557         get_keys = get_keys && ssid->export_keys;
2558
2559         props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
2560         if (!props)
2561                 return NULL;
2562
2563         fields_num = 0;
2564         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2565                 field = &ssid_fields[i];
2566                 if (field->key_data && !get_keys)
2567                         continue;
2568                 value = field->writer(field, ssid);
2569                 if (value == NULL)
2570                         continue;
2571                 if (os_strlen(value) == 0) {
2572                         os_free(value);
2573                         continue;
2574                 }
2575
2576                 key = os_strdup(field->name);
2577                 if (key == NULL) {
2578                         os_free(value);
2579                         goto err;
2580                 }
2581
2582                 props[fields_num * 2] = key;
2583                 props[fields_num * 2 + 1] = value;
2584
2585                 fields_num++;
2586         }
2587
2588         return props;
2589
2590 err:
2591         value = *props;
2592         while (value)
2593                 os_free(value++);
2594         os_free(props);
2595         return NULL;
2596 #endif /* NO_CONFIG_WRITE */
2597 }
2598
2599
2600 #ifndef NO_CONFIG_WRITE
2601 /**
2602  * wpa_config_get - Get a variable in network configuration
2603  * @ssid: Pointer to network configuration data
2604  * @var: Variable name, e.g., "ssid"
2605  * Returns: Value of the variable or %NULL on failure
2606  *
2607  * This function can be used to get network configuration variables. The
2608  * returned value is a copy of the configuration variable in text format, i.e,.
2609  * the same format that the text-based configuration file and wpa_config_set()
2610  * are using for the value. The caller is responsible for freeing the returned
2611  * value.
2612  */
2613 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
2614 {
2615         size_t i;
2616
2617         if (ssid == NULL || var == NULL)
2618                 return NULL;
2619
2620         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2621                 const struct parse_data *field = &ssid_fields[i];
2622                 if (os_strcmp(var, field->name) == 0)
2623                         return field->writer(field, ssid);
2624         }
2625
2626         return NULL;
2627 }
2628
2629
2630 /**
2631  * wpa_config_get_no_key - Get a variable in network configuration (no keys)
2632  * @ssid: Pointer to network configuration data
2633  * @var: Variable name, e.g., "ssid"
2634  * Returns: Value of the variable or %NULL on failure
2635  *
2636  * This function can be used to get network configuration variable like
2637  * wpa_config_get(). The only difference is that this functions does not expose
2638  * key/password material from the configuration. In case a key/password field
2639  * is requested, the returned value is an empty string or %NULL if the variable
2640  * is not set or "*" if the variable is set (regardless of its value). The
2641  * returned value is a copy of the configuration variable in text format, i.e,.
2642  * the same format that the text-based configuration file and wpa_config_set()
2643  * are using for the value. The caller is responsible for freeing the returned
2644  * value.
2645  */
2646 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
2647 {
2648         size_t i;
2649
2650         if (ssid == NULL || var == NULL)
2651                 return NULL;
2652
2653         for (i = 0; i < NUM_SSID_FIELDS; i++) {
2654                 const struct parse_data *field = &ssid_fields[i];
2655                 if (os_strcmp(var, field->name) == 0) {
2656                         char *res = field->writer(field, ssid);
2657                         if (field->key_data) {
2658                                 if (res && res[0]) {
2659                                         wpa_printf(MSG_DEBUG, "Do not allow "
2660                                                    "key_data field to be "
2661                                                    "exposed");
2662                                         str_clear_free(res);
2663                                         return os_strdup("*");
2664                                 }
2665
2666                                 os_free(res);
2667                                 return NULL;
2668                         }
2669                         return res;
2670                 }
2671         }
2672
2673         return NULL;
2674 }
2675 #endif /* NO_CONFIG_WRITE */
2676
2677
2678 /**
2679  * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
2680  * @ssid: Pointer to network configuration data
2681  *
2682  * This function must be called to update WPA PSK when either SSID or the
2683  * passphrase has changed for the network configuration.
2684  */
2685 void wpa_config_update_psk(struct wpa_ssid *ssid)
2686 {
2687 #ifndef CONFIG_NO_PBKDF2
2688         pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
2689                     ssid->psk, PMK_LEN);
2690         wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
2691                         ssid->psk, PMK_LEN);
2692         ssid->psk_set = 1;
2693 #endif /* CONFIG_NO_PBKDF2 */
2694 }
2695
2696
2697 static int wpa_config_set_cred_req_conn_capab(struct wpa_cred *cred,
2698                                               const char *value)
2699 {
2700         u8 *proto;
2701         int **port;
2702         int *ports, *nports;
2703         const char *pos;
2704         unsigned int num_ports;
2705
2706         proto = os_realloc_array(cred->req_conn_capab_proto,
2707                                  cred->num_req_conn_capab + 1, sizeof(u8));
2708         if (proto == NULL)
2709                 return -1;
2710         cred->req_conn_capab_proto = proto;
2711
2712         port = os_realloc_array(cred->req_conn_capab_port,
2713                                 cred->num_req_conn_capab + 1, sizeof(int *));
2714         if (port == NULL)
2715                 return -1;
2716         cred->req_conn_capab_port = port;
2717
2718         proto[cred->num_req_conn_capab] = atoi(value);
2719
2720         pos = os_strchr(value, ':');
2721         if (pos == NULL) {
2722                 port[cred->num_req_conn_capab] = NULL;
2723                 cred->num_req_conn_capab++;
2724                 return 0;
2725         }
2726         pos++;
2727
2728         ports = NULL;
2729         num_ports = 0;
2730
2731         while (*pos) {
2732                 nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
2733                 if (nports == NULL) {
2734                         os_free(ports);
2735                         return -1;
2736                 }
2737                 ports = nports;
2738                 ports[num_ports++] = atoi(pos);
2739
2740                 pos = os_strchr(pos, ',');
2741                 if (pos == NULL)
2742                         break;
2743                 pos++;
2744         }
2745
2746         nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
2747         if (nports == NULL) {
2748                 os_free(ports);
2749                 return -1;
2750         }
2751         ports = nports;
2752         ports[num_ports] = -1;
2753
2754         port[cred->num_req_conn_capab] = ports;
2755         cred->num_req_conn_capab++;
2756         return 0;
2757 }
2758
2759
2760 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
2761                         const char *value, int line)
2762 {
2763         char *val;
2764         size_t len;
2765
2766         if (os_strcmp(var, "temporary") == 0) {
2767                 cred->temporary = atoi(value);
2768                 return 0;
2769         }
2770
2771         if (os_strcmp(var, "priority") == 0) {
2772                 cred->priority = atoi(value);
2773                 return 0;
2774         }
2775
2776         if (os_strcmp(var, "sp_priority") == 0) {
2777                 int prio = atoi(value);
2778                 if (prio < 0 || prio > 255)
2779                         return -1;
2780                 cred->sp_priority = prio;
2781                 return 0;
2782         }
2783
2784         if (os_strcmp(var, "pcsc") == 0) {
2785                 cred->pcsc = atoi(value);
2786                 return 0;
2787         }
2788
2789         if (os_strcmp(var, "eap") == 0) {
2790                 struct eap_method_type method;
2791                 method.method = eap_peer_get_type(value, &method.vendor);
2792                 if (method.vendor == EAP_VENDOR_IETF &&
2793                     method.method == EAP_TYPE_NONE) {
2794                         wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
2795                                    "for a credential", line, value);
2796                         return -1;
2797                 }
2798                 os_free(cred->eap_method);
2799                 cred->eap_method = os_malloc(sizeof(*cred->eap_method));
2800                 if (cred->eap_method == NULL)
2801                         return -1;
2802                 os_memcpy(cred->eap_method, &method, sizeof(method));
2803                 return 0;
2804         }
2805
2806         if (os_strcmp(var, "password") == 0 &&
2807             os_strncmp(value, "ext:", 4) == 0) {
2808                 str_clear_free(cred->password);
2809                 cred->password = os_strdup(value);
2810                 cred->ext_password = 1;
2811                 return 0;
2812         }
2813
2814         if (os_strcmp(var, "update_identifier") == 0) {
2815                 cred->update_identifier = atoi(value);
2816                 return 0;
2817         }
2818
2819         if (os_strcmp(var, "min_dl_bandwidth_home") == 0) {
2820                 cred->min_dl_bandwidth_home = atoi(value);
2821                 return 0;
2822         }
2823
2824         if (os_strcmp(var, "min_ul_bandwidth_home") == 0) {
2825                 cred->min_ul_bandwidth_home = atoi(value);
2826                 return 0;
2827         }
2828
2829         if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0) {
2830                 cred->min_dl_bandwidth_roaming = atoi(value);
2831                 return 0;
2832         }
2833
2834         if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0) {
2835                 cred->min_ul_bandwidth_roaming = atoi(value);
2836                 return 0;
2837         }
2838
2839         if (os_strcmp(var, "max_bss_load") == 0) {
2840                 cred->max_bss_load = atoi(value);
2841                 return 0;
2842         }
2843
2844         if (os_strcmp(var, "req_conn_capab") == 0)
2845                 return wpa_config_set_cred_req_conn_capab(cred, value);
2846
2847         if (os_strcmp(var, "ocsp") == 0) {
2848                 cred->ocsp = atoi(value);
2849                 return 0;
2850         }
2851
2852         if (os_strcmp(var, "sim_num") == 0) {
2853                 cred->sim_num = atoi(value);
2854                 return 0;
2855         }
2856
2857         val = wpa_config_parse_string(value, &len);
2858         if (val == NULL) {
2859                 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
2860                            "value '%s'.", line, var, value);
2861                 return -1;
2862         }
2863
2864         if (os_strcmp(var, "realm") == 0) {
2865                 os_free(cred->realm);
2866                 cred->realm = val;
2867                 return 0;
2868         }
2869
2870         if (os_strcmp(var, "username") == 0) {
2871                 str_clear_free(cred->username);
2872                 cred->username = val;
2873                 return 0;
2874         }
2875
2876         if (os_strcmp(var, "password") == 0) {
2877                 str_clear_free(cred->password);
2878                 cred->password = val;
2879                 cred->ext_password = 0;
2880                 return 0;
2881         }
2882
2883         if (os_strcmp(var, "ca_cert") == 0) {
2884                 os_free(cred->ca_cert);
2885                 cred->ca_cert = val;
2886                 return 0;
2887         }
2888
2889         if (os_strcmp(var, "client_cert") == 0) {
2890                 os_free(cred->client_cert);
2891                 cred->client_cert = val;
2892                 return 0;
2893         }
2894
2895         if (os_strcmp(var, "private_key") == 0) {
2896                 os_free(cred->private_key);
2897                 cred->private_key = val;
2898                 return 0;
2899         }
2900
2901         if (os_strcmp(var, "private_key_passwd") == 0) {
2902                 str_clear_free(cred->private_key_passwd);
2903                 cred->private_key_passwd = val;
2904                 return 0;
2905         }
2906
2907         if (os_strcmp(var, "imsi") == 0) {
2908                 os_free(cred->imsi);
2909                 cred->imsi = val;
2910                 return 0;
2911         }
2912
2913         if (os_strcmp(var, "milenage") == 0) {
2914                 str_clear_free(cred->milenage);
2915                 cred->milenage = val;
2916                 return 0;
2917         }
2918
2919         if (os_strcmp(var, "domain_suffix_match") == 0) {
2920                 os_free(cred->domain_suffix_match);
2921                 cred->domain_suffix_match = val;
2922                 return 0;
2923         }
2924
2925         if (os_strcmp(var, "domain") == 0) {
2926                 char **new_domain;
2927                 new_domain = os_realloc_array(cred->domain,
2928                                               cred->num_domain + 1,
2929                                               sizeof(char *));
2930                 if (new_domain == NULL) {
2931                         os_free(val);
2932                         return -1;
2933                 }
2934                 new_domain[cred->num_domain++] = val;
2935                 cred->domain = new_domain;
2936                 return 0;
2937         }
2938
2939         if (os_strcmp(var, "phase1") == 0) {
2940                 os_free(cred->phase1);
2941                 cred->phase1 = val;
2942                 return 0;
2943         }
2944
2945         if (os_strcmp(var, "phase2") == 0) {
2946                 os_free(cred->phase2);
2947                 cred->phase2 = val;
2948                 return 0;
2949         }
2950
2951         if (os_strcmp(var, "roaming_consortium") == 0) {
2952                 if (len < 3 || len > sizeof(cred->roaming_consortium)) {
2953                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2954                                    "roaming_consortium length %d (3..15 "
2955                                    "expected)", line, (int) len);
2956                         os_free(val);
2957                         return -1;
2958                 }
2959                 os_memcpy(cred->roaming_consortium, val, len);
2960                 cred->roaming_consortium_len = len;
2961                 os_free(val);
2962                 return 0;
2963         }
2964
2965         if (os_strcmp(var, "required_roaming_consortium") == 0) {
2966                 if (len < 3 || len > sizeof(cred->required_roaming_consortium))
2967                 {
2968                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2969                                    "required_roaming_consortium length %d "
2970                                    "(3..15 expected)", line, (int) len);
2971                         os_free(val);
2972                         return -1;
2973                 }
2974                 os_memcpy(cred->required_roaming_consortium, val, len);
2975                 cred->required_roaming_consortium_len = len;
2976                 os_free(val);
2977                 return 0;
2978         }
2979
2980         if (os_strcmp(var, "excluded_ssid") == 0) {
2981                 struct excluded_ssid *e;
2982
2983                 if (len > SSID_MAX_LEN) {
2984                         wpa_printf(MSG_ERROR, "Line %d: invalid "
2985                                    "excluded_ssid length %d", line, (int) len);
2986                         os_free(val);
2987                         return -1;
2988                 }
2989
2990                 e = os_realloc_array(cred->excluded_ssid,
2991                                      cred->num_excluded_ssid + 1,
2992                                      sizeof(struct excluded_ssid));
2993                 if (e == NULL) {
2994                         os_free(val);
2995                         return -1;
2996                 }
2997                 cred->excluded_ssid = e;
2998
2999                 e = &cred->excluded_ssid[cred->num_excluded_ssid++];
3000                 os_memcpy(e->ssid, val, len);
3001                 e->ssid_len = len;
3002
3003                 os_free(val);
3004
3005                 return 0;
3006         }
3007
3008         if (os_strcmp(var, "roaming_partner") == 0) {
3009                 struct roaming_partner *p;
3010                 char *pos;
3011
3012                 p = os_realloc_array(cred->roaming_partner,
3013                                      cred->num_roaming_partner + 1,
3014                                      sizeof(struct roaming_partner));
3015                 if (p == NULL) {
3016                         os_free(val);
3017                         return -1;
3018                 }
3019                 cred->roaming_partner = p;
3020
3021                 p = &cred->roaming_partner[cred->num_roaming_partner];
3022
3023                 pos = os_strchr(val, ',');
3024                 if (pos == NULL) {
3025                         os_free(val);
3026                         return -1;
3027                 }
3028                 *pos++ = '\0';
3029                 if (pos - val - 1 >= (int) sizeof(p->fqdn)) {
3030                         os_free(val);
3031                         return -1;
3032                 }
3033                 os_memcpy(p->fqdn, val, pos - val);
3034
3035                 p->exact_match = atoi(pos);
3036
3037                 pos = os_strchr(pos, ',');
3038                 if (pos == NULL) {
3039                         os_free(val);
3040                         return -1;
3041                 }
3042                 *pos++ = '\0';
3043
3044                 p->priority = atoi(pos);
3045
3046                 pos = os_strchr(pos, ',');
3047                 if (pos == NULL) {
3048                         os_free(val);
3049                         return -1;
3050                 }
3051                 *pos++ = '\0';
3052
3053                 if (os_strlen(pos) >= sizeof(p->country)) {
3054                         os_free(val);
3055                         return -1;
3056                 }
3057                 os_memcpy(p->country, pos, os_strlen(pos) + 1);
3058
3059                 cred->num_roaming_partner++;
3060                 os_free(val);
3061
3062                 return 0;
3063         }
3064
3065         if (os_strcmp(var, "provisioning_sp") == 0) {
3066                 os_free(cred->provisioning_sp);
3067                 cred->provisioning_sp = val;
3068                 return 0;
3069         }
3070
3071         if (line) {
3072                 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
3073                            line, var);
3074         }
3075
3076         os_free(val);
3077
3078         return -1;
3079 }
3080
3081
3082 static char * alloc_int_str(int val)
3083 {
3084         const unsigned int bufsize = 20;
3085         char *buf;
3086         int res;
3087
3088         buf = os_malloc(bufsize);
3089         if (buf == NULL)
3090                 return NULL;
3091         res = os_snprintf(buf, bufsize, "%d", val);
3092         if (os_snprintf_error(bufsize, res)) {
3093                 os_free(buf);
3094                 buf = NULL;
3095         }
3096         return buf;
3097 }
3098
3099
3100 static char * alloc_strdup(const char *str)
3101 {
3102         if (str == NULL)
3103                 return NULL;
3104         return os_strdup(str);
3105 }
3106
3107
3108 char * wpa_config_get_cred_no_key(struct wpa_cred *cred, const char *var)
3109 {
3110         if (os_strcmp(var, "temporary") == 0)
3111                 return alloc_int_str(cred->temporary);
3112
3113         if (os_strcmp(var, "priority") == 0)
3114                 return alloc_int_str(cred->priority);
3115
3116         if (os_strcmp(var, "sp_priority") == 0)
3117                 return alloc_int_str(cred->sp_priority);
3118
3119         if (os_strcmp(var, "pcsc") == 0)
3120                 return alloc_int_str(cred->pcsc);
3121
3122         if (os_strcmp(var, "eap") == 0) {
3123                 if (!cred->eap_method)
3124                         return NULL;
3125                 return alloc_strdup(eap_get_name(cred->eap_method[0].vendor,
3126                                                  cred->eap_method[0].method));
3127         }
3128
3129         if (os_strcmp(var, "update_identifier") == 0)
3130                 return alloc_int_str(cred->update_identifier);
3131
3132         if (os_strcmp(var, "min_dl_bandwidth_home") == 0)
3133                 return alloc_int_str(cred->min_dl_bandwidth_home);
3134
3135         if (os_strcmp(var, "min_ul_bandwidth_home") == 0)
3136                 return alloc_int_str(cred->min_ul_bandwidth_home);
3137
3138         if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0)
3139                 return alloc_int_str(cred->min_dl_bandwidth_roaming);
3140
3141         if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0)
3142                 return alloc_int_str(cred->min_ul_bandwidth_roaming);
3143
3144         if (os_strcmp(var, "max_bss_load") == 0)
3145                 return alloc_int_str(cred->max_bss_load);
3146
3147         if (os_strcmp(var, "req_conn_capab") == 0) {
3148                 unsigned int i;
3149                 char *buf, *end, *pos;
3150                 int ret;
3151
3152                 if (!cred->num_req_conn_capab)
3153                         return NULL;
3154
3155                 buf = os_malloc(4000);
3156                 if (buf == NULL)
3157                         return NULL;
3158                 pos = buf;
3159                 end = pos + 4000;
3160                 for (i = 0; i < cred->num_req_conn_capab; i++) {
3161                         int *ports;
3162
3163                         ret = os_snprintf(pos, end - pos, "%s%u",
3164                                           i > 0 ? "\n" : "",
3165                                           cred->req_conn_capab_proto[i]);
3166                         if (os_snprintf_error(end - pos, ret))
3167                                 return buf;
3168                         pos += ret;
3169
3170                         ports = cred->req_conn_capab_port[i];
3171                         if (ports) {
3172                                 int j;
3173                                 for (j = 0; ports[j] != -1; j++) {
3174                                         ret = os_snprintf(pos, end - pos,
3175                                                           "%s%d",
3176                                                           j > 0 ? "," : ":",
3177                                                           ports[j]);
3178                                         if (os_snprintf_error(end - pos, ret))
3179                                                 return buf;
3180                                         pos += ret;
3181                                 }
3182                         }
3183                 }
3184
3185                 return buf;
3186         }
3187
3188         if (os_strcmp(var, "ocsp") == 0)
3189                 return alloc_int_str(cred->ocsp);
3190
3191         if (os_strcmp(var, "realm") == 0)
3192                 return alloc_strdup(cred->realm);
3193
3194         if (os_strcmp(var, "username") == 0)
3195                 return alloc_strdup(cred->username);
3196
3197         if (os_strcmp(var, "password") == 0) {
3198                 if (!cred->password)
3199                         return NULL;
3200                 return alloc_strdup("*");
3201         }
3202
3203         if (os_strcmp(var, "ca_cert") == 0)
3204                 return alloc_strdup(cred->ca_cert);
3205
3206         if (os_strcmp(var, "client_cert") == 0)
3207                 return alloc_strdup(cred->client_cert);
3208
3209         if (os_strcmp(var, "private_key") == 0)
3210                 return alloc_strdup(cred->private_key);
3211
3212         if (os_strcmp(var, "private_key_passwd") == 0) {
3213                 if (!cred->private_key_passwd)
3214                         return NULL;
3215                 return alloc_strdup("*");
3216         }
3217
3218         if (os_strcmp(var, "imsi") == 0)
3219                 return alloc_strdup(cred->imsi);
3220
3221         if (os_strcmp(var, "milenage") == 0) {
3222                 if (!(cred->milenage))
3223                         return NULL;
3224                 return alloc_strdup("*");
3225         }
3226
3227         if (os_strcmp(var, "domain_suffix_match") == 0)
3228                 return alloc_strdup(cred->domain_suffix_match);
3229
3230         if (os_strcmp(var, "domain") == 0) {
3231                 unsigned int i;
3232                 char *buf, *end, *pos;
3233                 int ret;
3234
3235                 if (!cred->num_domain)
3236                         return NULL;
3237
3238                 buf = os_malloc(4000);
3239                 if (buf == NULL)
3240                         return NULL;
3241                 pos = buf;
3242                 end = pos + 4000;
3243
3244                 for (i = 0; i < cred->num_domain; i++) {
3245                         ret = os_snprintf(pos, end - pos, "%s%s",
3246                                           i > 0 ? "\n" : "", cred->domain[i]);
3247                         if (os_snprintf_error(end - pos, ret))
3248                                 return buf;
3249                         pos += ret;
3250                 }
3251
3252                 return buf;
3253         }
3254
3255         if (os_strcmp(var, "phase1") == 0)
3256                 return alloc_strdup(cred->phase1);
3257
3258         if (os_strcmp(var, "phase2") == 0)
3259                 return alloc_strdup(cred->phase2);
3260
3261         if (os_strcmp(var, "roaming_consortium") == 0) {
3262                 size_t buflen;
3263                 char *buf;
3264
3265                 if (!cred->roaming_consortium_len)
3266                         return NULL;
3267                 buflen = cred->roaming_consortium_len * 2 + 1;
3268                 buf = os_malloc(buflen);
3269                 if (buf == NULL)
3270                         return NULL;
3271                 wpa_snprintf_hex(buf, buflen, cred->roaming_consortium,
3272                                  cred->roaming_consortium_len);
3273                 return buf;
3274         }
3275
3276         if (os_strcmp(var, "required_roaming_consortium") == 0) {
3277                 size_t buflen;
3278                 char *buf;
3279
3280                 if (!cred->required_roaming_consortium_len)
3281                         return NULL;
3282                 buflen = cred->required_roaming_consortium_len * 2 + 1;
3283                 buf = os_malloc(buflen);
3284                 if (buf == NULL)
3285                         return NULL;
3286                 wpa_snprintf_hex(buf, buflen, cred->required_roaming_consortium,
3287                                  cred->required_roaming_consortium_len);
3288                 return buf;
3289         }
3290
3291         if (os_strcmp(var, "excluded_ssid") == 0) {
3292                 unsigned int i;
3293                 char *buf, *end, *pos;
3294
3295                 if (!cred->num_excluded_ssid)
3296                         return NULL;
3297
3298                 buf = os_malloc(4000);
3299                 if (buf == NULL)
3300                         return NULL;
3301                 pos = buf;
3302                 end = pos + 4000;
3303
3304                 for (i = 0; i < cred->num_excluded_ssid; i++) {
3305                         struct excluded_ssid *e;
3306                         int ret;
3307
3308                         e = &cred->excluded_ssid[i];
3309                         ret = os_snprintf(pos, end - pos, "%s%s",
3310                                           i > 0 ? "\n" : "",
3311                                           wpa_ssid_txt(e->ssid, e->ssid_len));
3312                         if (os_snprintf_error(end - pos, ret))
3313                                 return buf;
3314                         pos += ret;
3315                 }
3316
3317                 return buf;
3318         }
3319
3320         if (os_strcmp(var, "roaming_partner") == 0) {
3321                 unsigned int i;
3322                 char *buf, *end, *pos;
3323
3324                 if (!cred->num_roaming_partner)
3325                         return NULL;
3326
3327                 buf = os_malloc(4000);
3328                 if (buf == NULL)
3329                         return NULL;
3330                 pos = buf;
3331                 end = pos + 4000;
3332
3333                 for (i = 0; i < cred->num_roaming_partner; i++) {
3334                         struct roaming_partner *p;
3335                         int ret;
3336
3337                         p = &cred->roaming_partner[i];
3338                         ret = os_snprintf(pos, end - pos, "%s%s,%d,%u,%s",
3339                                           i > 0 ? "\n" : "",
3340                                           p->fqdn, p->exact_match, p->priority,
3341                                           p->country);
3342                         if (os_snprintf_error(end - pos, ret))
3343                                 return buf;
3344                         pos += ret;
3345                 }
3346
3347                 return buf;
3348         }
3349
3350         if (os_strcmp(var, "provisioning_sp") == 0)
3351                 return alloc_strdup(cred->provisioning_sp);
3352
3353         return NULL;
3354 }
3355
3356
3357 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
3358 {
3359         struct wpa_cred *cred;
3360
3361         cred = config->cred;
3362         while (cred) {
3363                 if (id == cred->id)
3364                         break;
3365                 cred = cred->next;
3366         }
3367
3368         return cred;
3369 }
3370
3371
3372 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
3373 {
3374         int id;
3375         struct wpa_cred *cred, *last = NULL;
3376
3377         id = -1;
3378         cred = config->cred;
3379         while (cred) {
3380                 if (cred->id > id)
3381                         id = cred->id;
3382                 last = cred;
3383                 cred = cred->next;
3384         }
3385         id++;
3386
3387         cred = os_zalloc(sizeof(*cred));
3388         if (cred == NULL)
3389                 return NULL;
3390         cred->id = id;
3391         cred->sim_num = DEFAULT_USER_SELECTED_SIM;
3392         if (last)
3393                 last->next = cred;
3394         else
3395                 config->cred = cred;
3396
3397         return cred;
3398 }
3399
3400
3401 int wpa_config_remove_cred(struct wpa_config *config, int id)
3402 {
3403         struct wpa_cred *cred, *prev = NULL;
3404
3405         cred = config->cred;
3406         while (cred) {
3407                 if (id == cred->id)
3408                         break;
3409                 prev = cred;
3410                 cred = cred->next;
3411         }
3412
3413         if (cred == NULL)
3414                 return -1;
3415
3416         if (prev)
3417                 prev->next = cred->next;
3418         else
3419                 config->cred = cred->next;
3420
3421         wpa_config_free_cred(cred);
3422         return 0;
3423 }
3424
3425
3426 #ifndef CONFIG_NO_CONFIG_BLOBS
3427 /**
3428  * wpa_config_get_blob - Get a named configuration blob
3429  * @config: Configuration data from wpa_config_read()
3430  * @name: Name of the blob
3431  * Returns: Pointer to blob data or %NULL if not found
3432  */
3433 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
3434                                                    const char *name)
3435 {
3436         struct wpa_config_blob *blob = config->blobs;
3437
3438         while (blob) {
3439                 if (os_strcmp(blob->name, name) == 0)
3440                         return blob;
3441                 blob = blob->next;
3442         }
3443         return NULL;
3444 }
3445
3446
3447 /**
3448  * wpa_config_set_blob - Set or add a named configuration blob
3449  * @config: Configuration data from wpa_config_read()
3450  * @blob: New value for the blob
3451  *
3452  * Adds a new configuration blob or replaces the current value of an existing
3453  * blob.
3454  */
3455 void wpa_config_set_blob(struct wpa_config *config,
3456                          struct wpa_config_blob *blob)
3457 {
3458         wpa_config_remove_blob(config, blob->name);
3459         blob->next = config->blobs;
3460         config->blobs = blob;
3461 }
3462
3463
3464 /**
3465  * wpa_config_free_blob - Free blob data
3466  * @blob: Pointer to blob to be freed
3467  */
3468 void wpa_config_free_blob(struct wpa_config_blob *blob)
3469 {
3470         if (blob) {
3471                 os_free(blob->name);
3472                 bin_clear_free(blob->data, blob->len);
3473                 os_free(blob);
3474         }
3475 }
3476
3477
3478 /**
3479  * wpa_config_remove_blob - Remove a named configuration blob
3480  * @config: Configuration data from wpa_config_read()
3481  * @name: Name of the blob to remove
3482  * Returns: 0 if blob was removed or -1 if blob was not found
3483  */
3484 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
3485 {
3486         struct wpa_config_blob *pos = config->blobs, *prev = NULL;
3487
3488         while (pos) {
3489                 if (os_strcmp(pos->name, name) == 0) {
3490                         if (prev)
3491                                 prev->next = pos->next;
3492                         else
3493                                 config->blobs = pos->next;
3494                         wpa_config_free_blob(pos);
3495                         return 0;
3496                 }
3497                 prev = pos;
3498                 pos = pos->next;
3499         }
3500
3501         return -1;
3502 }
3503 #endif /* CONFIG_NO_CONFIG_BLOBS */
3504
3505
3506 /**
3507  * wpa_config_alloc_empty - Allocate an empty configuration
3508  * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
3509  * socket
3510  * @driver_param: Driver parameters
3511  * Returns: Pointer to allocated configuration data or %NULL on failure
3512  */
3513 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
3514                                            const char *driver_param)
3515 {
3516         struct wpa_config *config;
3517         const int aCWmin = 4, aCWmax = 10;
3518         const struct hostapd_wmm_ac_params ac_bk =
3519                 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
3520         const struct hostapd_wmm_ac_params ac_be =
3521                 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
3522         const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
3523                 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
3524         const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
3525                 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
3526
3527         config = os_zalloc(sizeof(*config));
3528         if (config == NULL)
3529                 return NULL;
3530         config->eapol_version = DEFAULT_EAPOL_VERSION;
3531         config->ap_scan = DEFAULT_AP_SCAN;
3532         config->user_mpm = DEFAULT_USER_MPM;
3533         config->max_peer_links = DEFAULT_MAX_PEER_LINKS;
3534         config->mesh_max_inactivity = DEFAULT_MESH_MAX_INACTIVITY;
3535         config->dot11RSNASAERetransPeriod =
3536                 DEFAULT_DOT11_RSNA_SAE_RETRANS_PERIOD;
3537         config->fast_reauth = DEFAULT_FAST_REAUTH;
3538         config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
3539         config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
3540         config->p2p_go_freq_change_policy = DEFAULT_P2P_GO_FREQ_MOVE;
3541         config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
3542         config->p2p_optimize_listen_chan = DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN;
3543         config->p2p_go_ctwindow = DEFAULT_P2P_GO_CTWINDOW;
3544         config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
3545         config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
3546         config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
3547         config->max_num_sta = DEFAULT_MAX_NUM_STA;
3548         config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
3549         config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
3550         config->wmm_ac_params[0] = ac_be;
3551         config->wmm_ac_params[1] = ac_bk;
3552         config->wmm_ac_params[2] = ac_vi;
3553         config->wmm_ac_params[3] = ac_vo;
3554         config->p2p_search_delay = DEFAULT_P2P_SEARCH_DELAY;
3555         config->rand_addr_lifetime = DEFAULT_RAND_ADDR_LIFETIME;
3556         config->key_mgmt_offload = DEFAULT_KEY_MGMT_OFFLOAD;
3557         config->cert_in_cb = DEFAULT_CERT_IN_CB;
3558         config->wpa_rsc_relaxation = DEFAULT_WPA_RSC_RELAXATION;
3559
3560         if (ctrl_interface)
3561                 config->ctrl_interface = os_strdup(ctrl_interface);
3562         if (driver_param)
3563                 config->driver_param = os_strdup(driver_param);
3564
3565         return config;
3566 }
3567
3568
3569 #ifndef CONFIG_NO_STDOUT_DEBUG
3570 /**
3571  * wpa_config_debug_dump_networks - Debug dump of configured networks
3572  * @config: Configuration data from wpa_config_read()
3573  */
3574 void wpa_config_debug_dump_networks(struct wpa_config *config)
3575 {
3576         int prio;
3577         struct wpa_ssid *ssid;
3578
3579         for (prio = 0; prio < config->num_prio; prio++) {
3580                 ssid = config->pssid[prio];
3581                 wpa_printf(MSG_DEBUG, "Priority group %d",
3582                            ssid->priority);
3583                 while (ssid) {
3584                         wpa_printf(MSG_DEBUG, "   id=%d ssid='%s'",
3585                                    ssid->id,
3586                                    wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3587                         ssid = ssid->pnext;
3588                 }
3589         }
3590 }
3591 #endif /* CONFIG_NO_STDOUT_DEBUG */
3592
3593
3594 struct global_parse_data {
3595         char *name;
3596         int (*parser)(const struct global_parse_data *data,
3597                       struct wpa_config *config, int line, const char *value);
3598         int (*get)(const char *name, struct wpa_config *config, long offset,
3599                    char *buf, size_t buflen, int pretty_print);
3600         void *param1, *param2, *param3;
3601         unsigned int changed_flag;
3602 };
3603
3604
3605 static int wpa_global_config_parse_int(const struct global_parse_data *data,
3606                                        struct wpa_config *config, int line,
3607                                        const char *pos)
3608 {
3609         int val, *dst;
3610         char *end;
3611
3612         dst = (int *) (((u8 *) config) + (long) data->param1);
3613         val = strtol(pos, &end, 0);
3614         if (*end) {
3615                 wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
3616                            line, pos);
3617                 return -1;
3618         }
3619         *dst = val;
3620
3621         wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
3622
3623         if (data->param2 && *dst < (long) data->param2) {
3624                 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
3625                            "min_value=%ld)", line, data->name, *dst,
3626                            (long) data->param2);
3627                 *dst = (long) data->param2;
3628                 return -1;
3629         }
3630
3631         if (data->param3 && *dst > (long) data->param3) {
3632                 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
3633                            "max_value=%ld)", line, data->name, *dst,
3634                            (long) data->param3);
3635                 *dst = (long) data->param3;
3636                 return -1;
3637         }
3638
3639         return 0;
3640 }
3641
3642
3643 static int wpa_global_config_parse_str(const struct global_parse_data *data,
3644                                        struct wpa_config *config, int line,
3645                                        const char *pos)
3646 {
3647         size_t len;
3648         char **dst, *tmp;
3649
3650         len = os_strlen(pos);
3651         if (data->param2 && len < (size_t) data->param2) {
3652                 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
3653                            "min_len=%ld)", line, data->name,
3654                            (unsigned long) len, (long) data->param2);
3655                 return -1;
3656         }
3657
3658         if (data->param3 && len > (size_t) data->param3) {
3659                 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
3660                            "max_len=%ld)", line, data->name,
3661                            (unsigned long) len, (long) data->param3);
3662                 return -1;
3663         }
3664
3665         tmp = os_strdup(pos);
3666         if (tmp == NULL)
3667                 return -1;
3668
3669         dst = (char **) (((u8 *) config) + (long) data->param1);
3670         os_free(*dst);
3671         *dst = tmp;
3672         wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
3673
3674         return 0;
3675 }
3676
3677
3678 static int wpa_config_process_bgscan(const struct global_parse_data *data,
3679                                      struct wpa_config *config, int line,
3680                                      const char *pos)
3681 {
3682         size_t len;
3683         char *tmp;
3684         int res;
3685
3686         tmp = wpa_config_parse_string(pos, &len);
3687         if (tmp == NULL) {
3688                 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s",
3689                            line, data->name);
3690                 return -1;
3691         }
3692
3693         res = wpa_global_config_parse_str(data, config, line, tmp);
3694         os_free(tmp);
3695         return res;
3696 }
3697
3698
3699 static int wpa_global_config_parse_bin(const struct global_parse_data *data,
3700                                        struct wpa_config *config, int line,
3701                                        const char *pos)
3702 {
3703         size_t len;
3704         struct wpabuf **dst, *tmp;
3705
3706         len = os_strlen(pos);
3707         if (len & 0x01)
3708                 return -1;
3709
3710         tmp = wpabuf_alloc(len / 2);
3711         if (tmp == NULL)
3712                 return -1;
3713
3714         if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) {
3715                 wpabuf_free(tmp);
3716                 return -1;
3717         }
3718
3719         dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
3720         wpabuf_free(*dst);
3721         *dst = tmp;
3722         wpa_printf(MSG_DEBUG, "%s", data->name);
3723
3724         return 0;
3725 }
3726
3727
3728 static int wpa_config_process_freq_list(const struct global_parse_data *data,
3729                                         struct wpa_config *config, int line,
3730                                         const char *value)
3731 {
3732         int *freqs;
3733
3734         freqs = wpa_config_parse_int_array(value);
3735         if (freqs == NULL)
3736                 return -1;
3737         if (freqs[0] == 0) {
3738                 os_free(freqs);
3739                 freqs = NULL;
3740         }
3741         os_free(config->freq_list);
3742         config->freq_list = freqs;
3743         return 0;
3744 }
3745
3746
3747 #ifdef CONFIG_P2P
3748 static int wpa_global_config_parse_ipv4(const struct global_parse_data *data,
3749                                         struct wpa_config *config, int line,
3750                                         const char *pos)
3751 {
3752         u32 *dst;
3753         struct hostapd_ip_addr addr;
3754
3755         if (hostapd_parse_ip_addr(pos, &addr) < 0)
3756                 return -1;
3757         if (addr.af != AF_INET)
3758                 return -1;
3759
3760         dst = (u32 *) (((u8 *) config) + (long) data->param1);
3761         os_memcpy(dst, &addr.u.v4.s_addr, 4);
3762         wpa_printf(MSG_DEBUG, "%s = 0x%x", data->name,
3763                    WPA_GET_BE32((u8 *) dst));
3764
3765         return 0;
3766 }
3767 #endif /* CONFIG_P2P */
3768
3769
3770 static int wpa_config_process_country(const struct global_parse_data *data,
3771                                       struct wpa_config *config, int line,
3772                                       const char *pos)
3773 {
3774         if (!pos[0] || !pos[1]) {
3775                 wpa_printf(MSG_DEBUG, "Invalid country set");
3776                 return -1;
3777         }
3778         config->country[0] = pos[0];
3779         config->country[1] = pos[1];
3780         wpa_printf(MSG_DEBUG, "country='%c%c'",
3781                    config->country[0], config->country[1]);
3782         return 0;
3783 }
3784
3785
3786 static int wpa_config_process_load_dynamic_eap(
3787         const struct global_parse_data *data, struct wpa_config *config,
3788         int line, const char *so)
3789 {
3790         int ret;
3791         wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
3792         ret = eap_peer_method_load(so);
3793         if (ret == -2) {
3794                 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
3795                            "reloading.");
3796         } else if (ret) {
3797                 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
3798                            "method '%s'.", line, so);
3799                 return -1;
3800         }
3801
3802         return 0;
3803 }
3804
3805
3806 #ifdef CONFIG_WPS
3807
3808 static int wpa_config_process_uuid(const struct global_parse_data *data,
3809                                    struct wpa_config *config, int line,
3810                                    const char *pos)
3811 {
3812         char buf[40];
3813         if (uuid_str2bin(pos, config->uuid)) {
3814                 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
3815                 return -1;
3816         }
3817         uuid_bin2str(config->uuid, buf, sizeof(buf));
3818         wpa_printf(MSG_DEBUG, "uuid=%s", buf);
3819         return 0;
3820 }
3821
3822
3823 static int wpa_config_process_device_type(
3824         const struct global_parse_data *data,
3825         struct wpa_config *config, int line, const char *pos)
3826 {
3827         return wps_dev_type_str2bin(pos, config->device_type);
3828 }
3829
3830
3831 static int wpa_config_process_os_version(const struct global_parse_data *data,
3832                                          struct wpa_config *config, int line,
3833                                          const char *pos)
3834 {
3835         if (hexstr2bin(pos, config->os_version, 4)) {
3836                 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
3837                 return -1;
3838         }
3839         wpa_printf(MSG_DEBUG, "os_version=%08x",
3840                    WPA_GET_BE32(config->os_version));
3841         return 0;
3842 }
3843
3844
3845 static int wpa_config_process_wps_vendor_ext_m1(
3846         const struct global_parse_data *data,
3847         struct wpa_config *config, int line, const char *pos)
3848 {
3849         struct wpabuf *tmp;
3850         int len = os_strlen(pos) / 2;
3851         u8 *p;
3852
3853         if (!len) {
3854                 wpa_printf(MSG_ERROR, "Line %d: "
3855                            "invalid wps_vendor_ext_m1", line);
3856                 return -1;
3857         }
3858
3859         tmp = wpabuf_alloc(len);
3860         if (tmp) {
3861                 p = wpabuf_put(tmp, len);
3862
3863                 if (hexstr2bin(pos, p, len)) {
3864                         wpa_printf(MSG_ERROR, "Line %d: "
3865                                    "invalid wps_vendor_ext_m1", line);
3866                         wpabuf_free(tmp);
3867                         return -1;
3868                 }
3869
3870                 wpabuf_free(config->wps_vendor_ext_m1);
3871                 config->wps_vendor_ext_m1 = tmp;
3872         } else {
3873                 wpa_printf(MSG_ERROR, "Can not allocate "
3874                            "memory for wps_vendor_ext_m1");
3875                 return -1;
3876         }
3877
3878         return 0;
3879 }
3880
3881 #endif /* CONFIG_WPS */
3882
3883 #ifdef CONFIG_P2P
3884 static int wpa_config_process_sec_device_type(
3885         const struct global_parse_data *data,
3886         struct wpa_config *config, int line, const char *pos)
3887 {
3888         int idx;
3889
3890         if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
3891                 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
3892                            "items", line);
3893                 return -1;
3894         }
3895
3896         idx = config->num_sec_device_types;
3897
3898         if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
3899                 return -1;
3900
3901         config->num_sec_device_types++;
3902         return 0;
3903 }
3904
3905
3906 static int wpa_config_process_p2p_pref_chan(
3907         const struct global_parse_data *data,
3908         struct wpa_config *config, int line, const char *pos)
3909 {
3910         struct p2p_channel *pref = NULL, *n;
3911         unsigned int num = 0;
3912         const char *pos2;
3913         u8 op_class, chan;
3914
3915         /* format: class:chan,class:chan,... */
3916
3917         while (*pos) {
3918                 op_class = atoi(pos);
3919                 pos2 = os_strchr(pos, ':');
3920                 if (pos2 == NULL)
3921                         goto fail;
3922                 pos2++;
3923                 chan = atoi(pos2);
3924
3925                 n = os_realloc_array(pref, num + 1,
3926                                      sizeof(struct p2p_channel));
3927                 if (n == NULL)
3928                         goto fail;
3929                 pref = n;
3930                 pref[num].op_class = op_class;
3931                 pref[num].chan = chan;
3932                 num++;
3933
3934                 pos = os_strchr(pos2, ',');
3935                 if (pos == NULL)
3936                         break;
3937                 pos++;
3938         }
3939
3940         os_free(config->p2p_pref_chan);
3941         config->p2p_pref_chan = pref;
3942         config->num_p2p_pref_chan = num;
3943         wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
3944                     (u8 *) config->p2p_pref_chan,
3945                     config->num_p2p_pref_chan * sizeof(struct p2p_channel));
3946
3947         return 0;
3948
3949 fail:
3950         os_free(pref);
3951         wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
3952         return -1;
3953 }
3954
3955
3956 static int wpa_config_process_p2p_no_go_freq(
3957         const struct global_parse_data *data,
3958         struct wpa_config *config, int line, const char *pos)
3959 {
3960         int ret;
3961
3962         ret = freq_range_list_parse(&config->p2p_no_go_freq, pos);
3963         if (ret < 0) {
3964                 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_no_go_freq", line);
3965                 return -1;
3966         }
3967
3968         wpa_printf(MSG_DEBUG, "P2P: p2p_no_go_freq with %u items",
3969                    config->p2p_no_go_freq.num);
3970
3971         return 0;
3972 }
3973
3974 #endif /* CONFIG_P2P */
3975
3976
3977 static int wpa_config_process_hessid(
3978         const struct global_parse_data *data,
3979         struct wpa_config *config, int line, const char *pos)
3980 {
3981         if (hwaddr_aton2(pos, config->hessid) < 0) {
3982                 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
3983                            line, pos);
3984                 return -1;
3985         }
3986
3987         return 0;
3988 }
3989
3990
3991 static int wpa_config_process_sae_groups(
3992         const struct global_parse_data *data,
3993         struct wpa_config *config, int line, const char *pos)
3994 {
3995         int *groups = wpa_config_parse_int_array(pos);
3996         if (groups == NULL) {
3997                 wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'",
3998                            line, pos);
3999                 return -1;
4000         }
4001
4002         os_free(config->sae_groups);
4003         config->sae_groups = groups;
4004
4005         return 0;
4006 }
4007
4008
4009 static int wpa_config_process_ap_vendor_elements(
4010         const struct global_parse_data *data,
4011         struct wpa_config *config, int line, const char *pos)
4012 {
4013         struct wpabuf *tmp;
4014         int len = os_strlen(pos) / 2;
4015         u8 *p;
4016
4017         if (!len) {
4018                 wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements",
4019                            line);
4020                 return -1;
4021         }
4022
4023         tmp = wpabuf_alloc(len);
4024         if (tmp) {
4025                 p = wpabuf_put(tmp, len);
4026
4027                 if (hexstr2bin(pos, p, len)) {
4028                         wpa_printf(MSG_ERROR, "Line %d: invalid "
4029                                    "ap_vendor_elements", line);
4030                         wpabuf_free(tmp);
4031                         return -1;
4032                 }
4033
4034                 wpabuf_free(config->ap_vendor_elements);
4035                 config->ap_vendor_elements = tmp;
4036         } else {
4037                 wpa_printf(MSG_ERROR, "Cannot allocate memory for "
4038                            "ap_vendor_elements");
4039                 return -1;
4040         }
4041
4042         return 0;
4043 }
4044
4045
4046 #ifdef CONFIG_CTRL_IFACE
4047 static int wpa_config_process_no_ctrl_interface(
4048         const struct global_parse_data *data,
4049         struct wpa_config *config, int line, const char *pos)
4050 {
4051         wpa_printf(MSG_DEBUG, "no_ctrl_interface -> ctrl_interface=NULL");
4052         os_free(config->ctrl_interface);
4053         config->ctrl_interface = NULL;
4054         return 0;
4055 }
4056 #endif /* CONFIG_CTRL_IFACE */
4057
4058
4059 static int wpa_config_get_int(const char *name, struct wpa_config *config,
4060                               long offset, char *buf, size_t buflen,
4061                               int pretty_print)
4062 {
4063         int *val = (int *) (((u8 *) config) + (long) offset);
4064
4065         if (pretty_print)
4066                 return os_snprintf(buf, buflen, "%s=%d\n", name, *val);
4067         return os_snprintf(buf, buflen, "%d", *val);
4068 }
4069
4070
4071 static int wpa_config_get_str(const char *name, struct wpa_config *config,
4072                               long offset, char *buf, size_t buflen,
4073                               int pretty_print)
4074 {
4075         char **val = (char **) (((u8 *) config) + (long) offset);
4076         int res;
4077
4078         if (pretty_print)
4079                 res = os_snprintf(buf, buflen, "%s=%s\n", name,
4080                                   *val ? *val : "null");
4081         else if (!*val)
4082                 return -1;
4083         else
4084                 res = os_snprintf(buf, buflen, "%s", *val);
4085         if (os_snprintf_error(buflen, res))
4086                 res = -1;
4087
4088         return res;
4089 }
4090
4091
4092 #ifdef CONFIG_P2P
4093 static int wpa_config_get_ipv4(const char *name, struct wpa_config *config,
4094                                long offset, char *buf, size_t buflen,
4095                                int pretty_print)
4096 {
4097         void *val = ((u8 *) config) + (long) offset;
4098         int res;
4099         char addr[INET_ADDRSTRLEN];
4100
4101         if (!val || !inet_ntop(AF_INET, val, addr, sizeof(addr)))
4102                 return -1;
4103
4104         if (pretty_print)
4105                 res = os_snprintf(buf, buflen, "%s=%s\n", name, addr);
4106         else
4107                 res = os_snprintf(buf, buflen, "%s", addr);
4108
4109         if (os_snprintf_error(buflen, res))
4110                 res = -1;
4111
4112         return res;
4113 }
4114 #endif /* CONFIG_P2P */
4115
4116
4117 #ifdef OFFSET
4118 #undef OFFSET
4119 #endif /* OFFSET */
4120 /* OFFSET: Get offset of a variable within the wpa_config structure */
4121 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
4122
4123 #define FUNC(f) #f, wpa_config_process_ ## f, NULL, OFFSET(f), NULL, NULL
4124 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL, NULL
4125 #define _INT(f) #f, wpa_global_config_parse_int, wpa_config_get_int, OFFSET(f)
4126 #define INT(f) _INT(f), NULL, NULL
4127 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
4128 #define _STR(f) #f, wpa_global_config_parse_str, wpa_config_get_str, OFFSET(f)
4129 #define STR(f) _STR(f), NULL, NULL
4130 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
4131 #define BIN(f) #f, wpa_global_config_parse_bin, NULL, OFFSET(f), NULL, NULL
4132 #define IPV4(f) #f, wpa_global_config_parse_ipv4, wpa_config_get_ipv4,  \
4133         OFFSET(f), NULL, NULL
4134
4135 static const struct global_parse_data global_fields[] = {
4136 #ifdef CONFIG_CTRL_IFACE
4137         { STR(ctrl_interface), 0 },
4138         { FUNC_NO_VAR(no_ctrl_interface), 0 },
4139         { STR(ctrl_interface_group), 0 } /* deprecated */,
4140 #endif /* CONFIG_CTRL_IFACE */
4141 #ifdef CONFIG_MACSEC
4142         { INT_RANGE(eapol_version, 1, 3), 0 },
4143 #else /* CONFIG_MACSEC */
4144         { INT_RANGE(eapol_version, 1, 2), 0 },
4145 #endif /* CONFIG_MACSEC */
4146         { INT(ap_scan), 0 },
4147         { FUNC(bgscan), 0 },
4148 #ifdef CONFIG_MESH
4149         { INT(user_mpm), 0 },
4150         { INT_RANGE(max_peer_links, 0, 255), 0 },
4151         { INT(mesh_max_inactivity), 0 },
4152         { INT(dot11RSNASAERetransPeriod), 0 },
4153 #endif /* CONFIG_MESH */
4154         { INT(disable_scan_offload), 0 },
4155         { INT(fast_reauth), 0 },
4156         { STR(opensc_engine_path), 0 },
4157         { STR(pkcs11_engine_path), 0 },
4158         { STR(pkcs11_module_path), 0 },
4159         { STR(openssl_ciphers), 0 },
4160         { STR(pcsc_reader), 0 },
4161         { STR(pcsc_pin), 0 },
4162         { INT(external_sim), 0 },
4163         { STR(driver_param), 0 },
4164         { INT(dot11RSNAConfigPMKLifetime), 0 },
4165         { INT(dot11RSNAConfigPMKReauthThreshold), 0 },
4166         { INT(dot11RSNAConfigSATimeout), 0 },
4167 #ifndef CONFIG_NO_CONFIG_WRITE
4168         { INT(update_config), 0 },
4169 #endif /* CONFIG_NO_CONFIG_WRITE */
4170         { FUNC_NO_VAR(load_dynamic_eap), 0 },
4171 #ifdef CONFIG_WPS
4172         { FUNC(uuid), CFG_CHANGED_UUID },
4173         { STR_RANGE(device_name, 0, WPS_DEV_NAME_MAX_LEN),
4174           CFG_CHANGED_DEVICE_NAME },
4175         { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
4176         { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
4177         { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
4178         { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
4179         { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
4180         { FUNC(os_version), CFG_CHANGED_OS_VERSION },
4181         { STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
4182         { INT_RANGE(wps_cred_processing, 0, 2), 0 },
4183         { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
4184 #endif /* CONFIG_WPS */
4185 #ifdef CONFIG_P2P
4186         { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
4187         { INT(p2p_listen_reg_class), CFG_CHANGED_P2P_LISTEN_CHANNEL },
4188         { INT(p2p_listen_channel), CFG_CHANGED_P2P_LISTEN_CHANNEL },
4189         { INT(p2p_oper_reg_class), CFG_CHANGED_P2P_OPER_CHANNEL },
4190         { INT(p2p_oper_channel), CFG_CHANGED_P2P_OPER_CHANNEL },
4191         { INT_RANGE(p2p_go_intent, 0, 15), 0 },
4192         { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
4193         { INT_RANGE(persistent_reconnect, 0, 1), 0 },
4194         { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
4195         { INT(p2p_group_idle), 0 },
4196         { INT_RANGE(p2p_go_freq_change_policy, 0, P2P_GO_FREQ_MOVE_MAX), 0 },
4197         { INT_RANGE(p2p_passphrase_len, 8, 63),
4198           CFG_CHANGED_P2P_PASSPHRASE_LEN },
4199         { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
4200         { FUNC(p2p_no_go_freq), CFG_CHANGED_P2P_PREF_CHAN },
4201         { INT_RANGE(p2p_add_cli_chan, 0, 1), 0 },
4202         { INT_RANGE(p2p_optimize_listen_chan, 0, 1), 0 },
4203         { INT(p2p_go_ht40), 0 },
4204         { INT(p2p_go_vht), 0 },
4205         { INT(p2p_disabled), 0 },
4206         { INT_RANGE(p2p_go_ctwindow, 0, 127), 0 },
4207         { INT(p2p_no_group_iface), 0 },
4208         { INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 },
4209         { IPV4(ip_addr_go), 0 },
4210         { IPV4(ip_addr_mask), 0 },
4211         { IPV4(ip_addr_start), 0 },
4212         { IPV4(ip_addr_end), 0 },
4213         { INT_RANGE(p2p_cli_probe, 0, 1), 0 },
4214 #endif /* CONFIG_P2P */
4215         { FUNC(country), CFG_CHANGED_COUNTRY },
4216         { INT(bss_max_count), 0 },
4217         { INT(bss_expiration_age), 0 },
4218         { INT(bss_expiration_scan_count), 0 },
4219         { INT_RANGE(filter_ssids, 0, 1), 0 },
4220         { INT_RANGE(filter_rssi, -100, 0), 0 },
4221         { INT(max_num_sta), 0 },
4222         { INT_RANGE(disassoc_low_ack, 0, 1), 0 },
4223 #ifdef CONFIG_HS20
4224         { INT_RANGE(hs20, 0, 1), 0 },
4225 #endif /* CONFIG_HS20 */
4226         { INT_RANGE(interworking, 0, 1), 0 },
4227         { FUNC(hessid), 0 },
4228         { INT_RANGE(access_network_type, 0, 15), 0 },
4229         { INT_RANGE(pbc_in_m1, 0, 1), 0 },
4230         { STR(autoscan), 0 },
4231         { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff),
4232           CFG_CHANGED_NFC_PASSWORD_TOKEN },
4233         { BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
4234         { BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
4235         { BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN },
4236         { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
4237         { INT(p2p_go_max_inactivity), 0 },
4238         { INT_RANGE(auto_interworking, 0, 1), 0 },
4239         { INT(okc), 0 },
4240         { INT(pmf), 0 },
4241         { FUNC(sae_groups), 0 },
4242         { INT(dtim_period), 0 },
4243         { INT(beacon_int), 0 },
4244         { FUNC(ap_vendor_elements), 0 },
4245         { INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
4246         { FUNC(freq_list), 0 },
4247         { INT(scan_cur_freq), 0 },
4248         { INT(sched_scan_interval), 0 },
4249         { INT(tdls_external_control), 0},
4250         { STR(osu_dir), 0 },
4251         { STR(wowlan_triggers), 0 },
4252         { INT(p2p_search_delay), 0},
4253         { INT(mac_addr), 0 },
4254         { INT(rand_addr_lifetime), 0 },
4255         { INT(preassoc_mac_addr), 0 },
4256         { INT(key_mgmt_offload), 0},
4257         { INT(passive_scan), 0 },
4258         { INT(reassoc_same_bss_optim), 0 },
4259         { INT(wps_priority), 0},
4260 #ifdef CONFIG_FST
4261         { STR_RANGE(fst_group_id, 1, FST_MAX_GROUP_ID_LEN), 0 },
4262         { INT_RANGE(fst_priority, 1, FST_MAX_PRIO_VALUE), 0 },
4263         { INT_RANGE(fst_llt, 1, FST_MAX_LLT_MS), 0 },
4264 #endif /* CONFIG_FST */
4265         { INT_RANGE(wpa_rsc_relaxation, 0, 1), 0 },
4266         { STR(sched_scan_plans), CFG_CHANGED_SCHED_SCAN_PLANS },
4267 };
4268
4269 #undef FUNC
4270 #undef _INT
4271 #undef INT
4272 #undef INT_RANGE
4273 #undef _STR
4274 #undef STR
4275 #undef STR_RANGE
4276 #undef BIN
4277 #undef IPV4
4278 #define NUM_GLOBAL_FIELDS ARRAY_SIZE(global_fields)
4279
4280
4281 int wpa_config_dump_values(struct wpa_config *config, char *buf, size_t buflen)
4282 {
4283         int result = 0;
4284         size_t i;
4285
4286         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
4287                 const struct global_parse_data *field = &global_fields[i];
4288                 int tmp;
4289
4290                 if (!field->get)
4291                         continue;
4292
4293                 tmp = field->get(field->name, config, (long) field->param1,
4294                                  buf, buflen, 1);
4295                 if (tmp < 0)
4296                         return -1;
4297                 buf += tmp;
4298                 buflen -= tmp;
4299                 result += tmp;
4300         }
4301         return result;
4302 }
4303
4304
4305 int wpa_config_get_value(const char *name, struct wpa_config *config,
4306                          char *buf, size_t buflen)
4307 {
4308         size_t i;
4309
4310         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
4311                 const struct global_parse_data *field = &global_fields[i];
4312
4313                 if (os_strcmp(name, field->name) != 0)
4314                         continue;
4315                 if (!field->get)
4316                         break;
4317                 return field->get(name, config, (long) field->param1,
4318                                   buf, buflen, 0);
4319         }
4320
4321         return -1;
4322 }
4323
4324
4325 int wpa_config_get_num_global_field_names(void)
4326 {
4327         return NUM_GLOBAL_FIELDS;
4328 }
4329
4330
4331 const char * wpa_config_get_global_field_name(unsigned int i, int *no_var)
4332 {
4333         if (i >= NUM_GLOBAL_FIELDS)
4334                 return NULL;
4335
4336         if (no_var)
4337                 *no_var = !global_fields[i].param1;
4338         return global_fields[i].name;
4339 }
4340
4341
4342 int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
4343 {
4344         size_t i;
4345         int ret = 0;
4346
4347         for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
4348                 const struct global_parse_data *field = &global_fields[i];
4349                 size_t flen = os_strlen(field->name);
4350                 if (os_strncmp(pos, field->name, flen) != 0 ||
4351                     pos[flen] != '=')
4352                         continue;
4353
4354                 if (field->parser(field, config, line, pos + flen + 1)) {
4355                         wpa_printf(MSG_ERROR, "Line %d: failed to "
4356                                    "parse '%s'.", line, pos);
4357                         ret = -1;
4358                 }
4359                 if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN)
4360                         config->wps_nfc_pw_from_config = 1;
4361                 config->changed_parameters |= field->changed_flag;
4362                 break;
4363         }
4364         if (i == NUM_GLOBAL_FIELDS) {
4365 #ifdef CONFIG_AP
4366                 if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
4367                         char *tmp = os_strchr(pos, '=');
4368                         if (tmp == NULL) {
4369                                 if (line < 0)
4370                                         return -1;
4371                                 wpa_printf(MSG_ERROR, "Line %d: invalid line "
4372                                            "'%s'", line, pos);
4373                                 return -1;
4374                         }
4375                         *tmp++ = '\0';
4376                         if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
4377                                                   tmp)) {
4378                                 wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
4379                                            "AC item", line);
4380                                 return -1;
4381                         }
4382                 }
4383 #endif /* CONFIG_AP */
4384                 if (line < 0)
4385                         return -1;
4386                 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
4387                            line, pos);
4388                 ret = -1;
4389         }
4390
4391         return ret;
4392 }