wpa_supplicant/config.c

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