contrib/wpa_supplicant/wpa_supplicant/config_file.c

   1 /*
   2  * WPA Supplicant / Configuration backend: text file
   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  * This file implements a configuration backend for text files. All the
   9  * configuration information is stored in a text file that uses a format
  10  * described in the sample configuration file, wpa_supplicant.conf.
  11  */
  12
  13 #include "includes.h"
  14 #ifdef ANDROID
  15 #include <sys/stat.h>
  16 #endif /* ANDROID */
  17
  18 #include "common.h"
  19 #include "config.h"
  20 #include "base64.h"
  21 #include "uuid.h"
  22 #include "common/ieee802_1x_defs.h"
  23 #include "p2p/p2p.h"
  24 #include "eap_peer/eap_methods.h"
  25 #include "eap_peer/eap.h"
  26
  27
  28 static int newline_terminated(const char *buf, size_t buflen)
  29 {
  30         size_t len = os_strlen(buf);
  31         if (len == 0)
  32                 return 0;
  33         if (len == buflen - 1 && buf[buflen - 1] != '\r' &&
  34             buf[len - 1] != '\n')
  35                 return 0;
  36         return 1;
  37 }
  38
  39
  40 static void skip_line_end(FILE *stream)
  41 {
  42         char buf[100];
  43         while (fgets(buf, sizeof(buf), stream)) {
  44                 buf[sizeof(buf) - 1] = '\0';
  45                 if (newline_terminated(buf, sizeof(buf)))
  46                         return;
  47         }
  48 }
  49
  50
  51 /**
  52  * wpa_config_get_line - Read the next configuration file line
  53  * @s: Buffer for the line
  54  * @size: The buffer length
  55  * @stream: File stream to read from
  56  * @line: Pointer to a variable storing the file line number
  57  * @_pos: Buffer for the pointer to the beginning of data on the text line or
  58  * %NULL if not needed (returned value used instead)
  59  * Returns: Pointer to the beginning of data on the text line or %NULL if no
  60  * more text lines are available.
  61  *
  62  * This function reads the next non-empty line from the configuration file and
  63  * removes comments. The returned string is guaranteed to be null-terminated.
  64  */
  65 static char * wpa_config_get_line(char *s, int size, FILE *stream, int *line,
  66                                   char **_pos)
  67 {
  68         char *pos, *end, *sstart;
  69
  70         while (fgets(s, size, stream)) {
  71                 (*line)++;
  72                 s[size - 1] = '\0';
  73                 if (!newline_terminated(s, size)) {
  74                         /*
  75                          * The line was truncated - skip rest of it to avoid
  76                          * confusing error messages.
  77                          */
  78                         wpa_printf(MSG_INFO, "Long line in configuration file "
  79                                    "truncated");
  80                         skip_line_end(stream);
  81                 }
  82                 pos = s;
  83
  84                 /* Skip white space from the beginning of line. */
  85                 while (*pos == ' ' || *pos == '\t' || *pos == '\r')
  86                         pos++;
  87
  88                 /* Skip comment lines and empty lines */
  89                 if (*pos == '#' || *pos == '\n' || *pos == '\0')
  90                         continue;
  91
  92                 /*
  93                  * Remove # comments unless they are within a double quoted
  94                  * string.
  95                  */
  96                 sstart = os_strchr(pos, '"');
  97                 if (sstart)
  98                         sstart = os_strrchr(sstart + 1, '"');
  99                 if (!sstart)
 100                         sstart = pos;
 101                 end = os_strchr(sstart, '#');
 102                 if (end)
 103                         *end-- = '\0';
 104                 else
 105                         end = pos + os_strlen(pos) - 1;
 106
 107                 /* Remove trailing white space. */
 108                 while (end > pos &&
 109                        (*end == '\n' || *end == ' ' || *end == '\t' ||
 110                         *end == '\r'))
 111                         *end-- = '\0';
 112
 113                 if (*pos == '\0')
 114                         continue;
 115
 116                 if (_pos)
 117                         *_pos = pos;
 118                 return pos;
 119         }
 120
 121         if (_pos)
 122                 *_pos = NULL;
 123         return NULL;
 124 }
 125
 126
 127 static int wpa_config_validate_network(struct wpa_ssid *ssid, int line)
 128 {
 129         int errors = 0;
 130
 131         if (ssid->passphrase) {
 132                 if (ssid->psk_set) {
 133                         wpa_printf(MSG_ERROR, "Line %d: both PSK and "
 134                                    "passphrase configured.", line);
 135                         errors++;
 136                 }
 137                 wpa_config_update_psk(ssid);
 138         }
 139
 140         if (ssid->disabled == 2)
 141                 ssid->p2p_persistent_group = 1;
 142
 143         if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
 144             !(ssid->pairwise_cipher & (WPA_CIPHER_CCMP | WPA_CIPHER_CCMP_256 |
 145                                        WPA_CIPHER_GCMP | WPA_CIPHER_GCMP_256 |
 146                                        WPA_CIPHER_NONE))) {
 147                 /* Group cipher cannot be stronger than the pairwise cipher. */
 148                 wpa_printf(MSG_DEBUG, "Line %d: removed CCMP from group cipher"
 149                            " list since it was not allowed for pairwise "
 150                            "cipher", line);
 151                 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
 152         }
 153
 154         if (ssid->mode == WPAS_MODE_MESH &&
 155             (ssid->key_mgmt != WPA_KEY_MGMT_NONE &&
 156             ssid->key_mgmt != WPA_KEY_MGMT_SAE)) {
 157                 wpa_printf(MSG_ERROR,
 158                            "Line %d: key_mgmt for mesh network should be open or SAE",
 159                            line);
 160                 errors++;
 161         }
 162
 163 #ifdef CONFIG_OCV
 164         if (ssid->ocv && ssid->ieee80211w == NO_MGMT_FRAME_PROTECTION) {
 165                 wpa_printf(MSG_ERROR,
 166                            "Line %d: PMF needs to be enabled whenever using OCV",
 167                            line);
 168                 errors++;
 169         }
 170 #endif /* CONFIG_OCV */
 171
 172         return errors;
 173 }
 174
 175
 176 static struct wpa_ssid * wpa_config_read_network(FILE *f, int *line, int id)
 177 {
 178         struct wpa_ssid *ssid;
 179         int errors = 0, end = 0;
 180         char buf[2000], *pos, *pos2;
 181
 182         wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new network block",
 183                    *line);
 184         ssid = os_zalloc(sizeof(*ssid));
 185         if (ssid == NULL)
 186                 return NULL;
 187         dl_list_init(&ssid->psk_list);
 188         ssid->id = id;
 189
 190         wpa_config_set_network_defaults(ssid);
 191
 192         while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
 193                 if (os_strcmp(pos, "}") == 0) {
 194                         end = 1;
 195                         break;
 196                 }
 197
 198                 pos2 = os_strchr(pos, '=');
 199                 if (pos2 == NULL) {
 200                         wpa_printf(MSG_ERROR, "Line %d: Invalid SSID line "
 201                                    "'%s'.", *line, pos);
 202                         errors++;
 203                         continue;
 204                 }
 205
 206                 *pos2++ = '\0';
 207                 if (*pos2 == '"') {
 208                         if (os_strchr(pos2 + 1, '"') == NULL) {
 209                                 wpa_printf(MSG_ERROR, "Line %d: invalid "
 210                                            "quotation '%s'.", *line, pos2);
 211                                 errors++;
 212                                 continue;
 213                         }
 214                 }
 215
 216                 if (wpa_config_set(ssid, pos, pos2, *line) < 0)
 217                         errors++;
 218         }
 219
 220         if (!end) {
 221                 wpa_printf(MSG_ERROR, "Line %d: network block was not "
 222                            "terminated properly.", *line);
 223                 errors++;
 224         }
 225
 226         errors += wpa_config_validate_network(ssid, *line);
 227
 228         if (errors) {
 229                 wpa_config_free_ssid(ssid);
 230                 ssid = NULL;
 231         }
 232
 233         return ssid;
 234 }
 235
 236
 237 static struct wpa_cred * wpa_config_read_cred(FILE *f, int *line, int id)
 238 {
 239         struct wpa_cred *cred;
 240         int errors = 0, end = 0;
 241         char buf[256], *pos, *pos2;
 242
 243         wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new cred block", *line);
 244         cred = os_zalloc(sizeof(*cred));
 245         if (cred == NULL)
 246                 return NULL;
 247         cred->id = id;
 248         cred->sim_num = DEFAULT_USER_SELECTED_SIM;
 249
 250         while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
 251                 if (os_strcmp(pos, "}") == 0) {
 252                         end = 1;
 253                         break;
 254                 }
 255
 256                 pos2 = os_strchr(pos, '=');
 257                 if (pos2 == NULL) {
 258                         wpa_printf(MSG_ERROR, "Line %d: Invalid cred line "
 259                                    "'%s'.", *line, pos);
 260                         errors++;
 261                         continue;
 262                 }
 263
 264                 *pos2++ = '\0';
 265                 if (*pos2 == '"') {
 266                         if (os_strchr(pos2 + 1, '"') == NULL) {
 267                                 wpa_printf(MSG_ERROR, "Line %d: invalid "
 268                                            "quotation '%s'.", *line, pos2);
 269                                 errors++;
 270                                 continue;
 271                         }
 272                 }
 273
 274                 if (wpa_config_set_cred(cred, pos, pos2, *line) < 0)
 275                         errors++;
 276         }
 277
 278         if (!end) {
 279                 wpa_printf(MSG_ERROR, "Line %d: cred block was not "
 280                            "terminated properly.", *line);
 281                 errors++;
 282         }
 283
 284         if (errors) {
 285                 wpa_config_free_cred(cred);
 286                 cred = NULL;
 287         }
 288
 289         return cred;
 290 }
 291
 292
 293 #ifndef CONFIG_NO_CONFIG_BLOBS
 294 static struct wpa_config_blob * wpa_config_read_blob(FILE *f, int *line,
 295                                                      const char *name)
 296 {
 297         struct wpa_config_blob *blob;
 298         char buf[256], *pos;
 299         unsigned char *encoded = NULL, *nencoded;
 300         int end = 0;
 301         size_t encoded_len = 0, len;
 302
 303         wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new named blob '%s'",
 304                    *line, name);
 305
 306         while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
 307                 if (os_strcmp(pos, "}") == 0) {
 308                         end = 1;
 309                         break;
 310                 }
 311
 312                 len = os_strlen(pos);
 313                 nencoded = os_realloc(encoded, encoded_len + len);
 314                 if (nencoded == NULL) {
 315                         wpa_printf(MSG_ERROR, "Line %d: not enough memory for "
 316                                    "blob", *line);
 317                         os_free(encoded);
 318                         return NULL;
 319                 }
 320                 encoded = nencoded;
 321                 os_memcpy(encoded + encoded_len, pos, len);
 322                 encoded_len += len;
 323         }
 324
 325         if (!end || !encoded) {
 326                 wpa_printf(MSG_ERROR, "Line %d: blob was not terminated "
 327                            "properly", *line);
 328                 os_free(encoded);
 329                 return NULL;
 330         }
 331
 332         blob = os_zalloc(sizeof(*blob));
 333         if (blob == NULL) {
 334                 os_free(encoded);
 335                 return NULL;
 336         }
 337         blob->name = os_strdup(name);
 338         blob->data = base64_decode(encoded, encoded_len, &blob->len);
 339         os_free(encoded);
 340
 341         if (blob->name == NULL || blob->data == NULL) {
 342                 wpa_config_free_blob(blob);
 343                 return NULL;
 344         }
 345
 346         return blob;
 347 }
 348
 349
 350 static int wpa_config_process_blob(struct wpa_config *config, FILE *f,
 351                                    int *line, char *bname)
 352 {
 353         char *name_end;
 354         struct wpa_config_blob *blob;
 355
 356         name_end = os_strchr(bname, '=');
 357         if (name_end == NULL) {
 358                 wpa_printf(MSG_ERROR, "Line %d: no blob name terminator",
 359                            *line);
 360                 return -1;
 361         }
 362         *name_end = '\0';
 363
 364         blob = wpa_config_read_blob(f, line, bname);
 365         if (blob == NULL) {
 366                 wpa_printf(MSG_ERROR, "Line %d: failed to read blob %s",
 367                            *line, bname);
 368                 return -1;
 369         }
 370         wpa_config_set_blob(config, blob);
 371         return 0;
 372 }
 373 #endif /* CONFIG_NO_CONFIG_BLOBS */
 374
 375
 376 struct wpa_config * wpa_config_read(const char *name, struct wpa_config *cfgp)
 377 {
 378         FILE *f;
 379         char buf[512], *pos;
 380         int errors = 0, line = 0;
 381         struct wpa_ssid *ssid, *tail, *head;
 382         struct wpa_cred *cred, *cred_tail, *cred_head;
 383         struct wpa_config *config;
 384         int id = 0;
 385         int cred_id = 0;
 386
 387         if (name == NULL)
 388                 return NULL;
 389         if (cfgp)
 390                 config = cfgp;
 391         else
 392                 config = wpa_config_alloc_empty(NULL, NULL);
 393         if (config == NULL) {
 394                 wpa_printf(MSG_ERROR, "Failed to allocate config file "
 395                            "structure");
 396                 return NULL;
 397         }
 398         tail = head = config->ssid;
 399         while (tail && tail->next)
 400                 tail = tail->next;
 401         cred_tail = cred_head = config->cred;
 402         while (cred_tail && cred_tail->next)
 403                 cred_tail = cred_tail->next;
 404
 405         wpa_printf(MSG_DEBUG, "Reading configuration file '%s'", name);
 406         f = fopen(name, "r");
 407         if (f == NULL) {
 408                 wpa_printf(MSG_ERROR, "Failed to open config file '%s', "
 409                            "error: %s", name, strerror(errno));
 410                 if (config != cfgp)
 411                         os_free(config);
 412                 return NULL;
 413         }
 414
 415         while (wpa_config_get_line(buf, sizeof(buf), f, &line, &pos)) {
 416                 if (os_strcmp(pos, "network={") == 0) {
 417                         ssid = wpa_config_read_network(f, &line, id++);
 418                         if (ssid == NULL) {
 419                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
 420                                            "parse network block.", line);
 421                                 errors++;
 422                                 continue;
 423                         }
 424                         if (head == NULL) {
 425                                 head = tail = ssid;
 426                         } else {
 427                                 tail->next = ssid;
 428                                 tail = ssid;
 429                         }
 430                         if (wpa_config_add_prio_network(config, ssid)) {
 431                                 wpa_printf(MSG_ERROR, "Line %d: failed to add "
 432                                            "network block to priority list.",
 433                                            line);
 434                                 errors++;
 435                                 continue;
 436                         }
 437                 } else if (os_strcmp(pos, "cred={") == 0) {
 438                         cred = wpa_config_read_cred(f, &line, cred_id++);
 439                         if (cred == NULL) {
 440                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
 441                                            "parse cred block.", line);
 442                                 errors++;
 443                                 continue;
 444                         }
 445                         if (cred_head == NULL) {
 446                                 cred_head = cred_tail = cred;
 447                         } else {
 448                                 cred_tail->next = cred;
 449                                 cred_tail = cred;
 450                         }
 451 #ifndef CONFIG_NO_CONFIG_BLOBS
 452                 } else if (os_strncmp(pos, "blob-base64-", 12) == 0) {
 453                         if (wpa_config_process_blob(config, f, &line, pos + 12)
 454                             < 0) {
 455                                 wpa_printf(MSG_ERROR, "Line %d: failed to "
 456                                            "process blob.", line);
 457                                 errors++;
 458                                 continue;
 459                         }
 460 #endif /* CONFIG_NO_CONFIG_BLOBS */
 461                 } else if (wpa_config_process_global(config, pos, line) < 0) {
 462                         wpa_printf(MSG_ERROR, "Line %d: Invalid configuration "
 463                                    "line '%s'.", line, pos);
 464                         errors++;
 465                         continue;
 466                 }
 467         }
 468
 469         fclose(f);
 470
 471         config->ssid = head;
 472         wpa_config_debug_dump_networks(config);
 473         config->cred = cred_head;
 474
 475 #ifndef WPA_IGNORE_CONFIG_ERRORS
 476         if (errors) {
 477                 if (config != cfgp)
 478                         wpa_config_free(config);
 479                 config = NULL;
 480                 head = NULL;
 481         }
 482 #endif /* WPA_IGNORE_CONFIG_ERRORS */
 483
 484         return config;
 485 }
 486
 487
 488 #ifndef CONFIG_NO_CONFIG_WRITE
 489
 490 static void write_str(FILE *f, const char *field, struct wpa_ssid *ssid)
 491 {
 492         char *value = wpa_config_get(ssid, field);
 493         if (value == NULL)
 494                 return;
 495         fprintf(f, "\t%s=%s\n", field, value);
 496         str_clear_free(value);
 497 }
 498
 499
 500 static void write_int(FILE *f, const char *field, int value, int def)
 501 {
 502         if (value == def)
 503                 return;
 504         fprintf(f, "\t%s=%d\n", field, value);
 505 }
 506
 507
 508 static void write_bssid(FILE *f, struct wpa_ssid *ssid)
 509 {
 510         char *value = wpa_config_get(ssid, "bssid");
 511         if (value == NULL)
 512                 return;
 513         fprintf(f, "\tbssid=%s\n", value);
 514         os_free(value);
 515 }
 516
 517
 518 static void write_bssid_hint(FILE *f, struct wpa_ssid *ssid)
 519 {
 520         char *value = wpa_config_get(ssid, "bssid_hint");
 521
 522         if (!value)
 523                 return;
 524         fprintf(f, "\tbssid_hint=%s\n", value);
 525         os_free(value);
 526 }
 527
 528
 529 static void write_psk(FILE *f, struct wpa_ssid *ssid)
 530 {
 531         char *value;
 532
 533         if (ssid->mem_only_psk)
 534                 return;
 535
 536         value = wpa_config_get(ssid, "psk");
 537         if (value == NULL)
 538                 return;
 539         fprintf(f, "\tpsk=%s\n", value);
 540         os_free(value);
 541 }
 542
 543
 544 static void write_proto(FILE *f, struct wpa_ssid *ssid)
 545 {
 546         char *value;
 547
 548         if (ssid->proto == DEFAULT_PROTO)
 549                 return;
 550
 551         value = wpa_config_get(ssid, "proto");
 552         if (value == NULL)
 553                 return;
 554         if (value[0])
 555                 fprintf(f, "\tproto=%s\n", value);
 556         os_free(value);
 557 }
 558
 559
 560 static void write_key_mgmt(FILE *f, struct wpa_ssid *ssid)
 561 {
 562         char *value;
 563
 564         if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
 565                 return;
 566
 567         value = wpa_config_get(ssid, "key_mgmt");
 568         if (value == NULL)
 569                 return;
 570         if (value[0])
 571                 fprintf(f, "\tkey_mgmt=%s\n", value);
 572         os_free(value);
 573 }
 574
 575
 576 static void write_pairwise(FILE *f, struct wpa_ssid *ssid)
 577 {
 578         char *value;
 579
 580         if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
 581                 return;
 582
 583         value = wpa_config_get(ssid, "pairwise");
 584         if (value == NULL)
 585                 return;
 586         if (value[0])
 587                 fprintf(f, "\tpairwise=%s\n", value);
 588         os_free(value);
 589 }
 590
 591
 592 static void write_group(FILE *f, struct wpa_ssid *ssid)
 593 {
 594         char *value;
 595
 596         if (ssid->group_cipher == DEFAULT_GROUP)
 597                 return;
 598
 599         value = wpa_config_get(ssid, "group");
 600         if (value == NULL)
 601                 return;
 602         if (value[0])
 603                 fprintf(f, "\tgroup=%s\n", value);
 604         os_free(value);
 605 }
 606
 607
 608 static void write_group_mgmt(FILE *f, struct wpa_ssid *ssid)
 609 {
 610         char *value;
 611
 612         if (!ssid->group_mgmt_cipher)
 613                 return;
 614
 615         value = wpa_config_get(ssid, "group_mgmt");
 616         if (!value)
 617                 return;
 618         if (value[0])
 619                 fprintf(f, "\tgroup_mgmt=%s\n", value);
 620         os_free(value);
 621 }
 622
 623
 624 static void write_auth_alg(FILE *f, struct wpa_ssid *ssid)
 625 {
 626         char *value;
 627
 628         if (ssid->auth_alg == 0)
 629                 return;
 630
 631         value = wpa_config_get(ssid, "auth_alg");
 632         if (value == NULL)
 633                 return;
 634         if (value[0])
 635                 fprintf(f, "\tauth_alg=%s\n", value);
 636         os_free(value);
 637 }
 638
 639
 640 #ifdef IEEE8021X_EAPOL
 641 static void write_eap(FILE *f, struct wpa_ssid *ssid)
 642 {
 643         char *value;
 644
 645         value = wpa_config_get(ssid, "eap");
 646         if (value == NULL)
 647                 return;
 648
 649         if (value[0])
 650                 fprintf(f, "\teap=%s\n", value);
 651         os_free(value);
 652 }
 653 #endif /* IEEE8021X_EAPOL */
 654
 655
 656 static void write_wep_key(FILE *f, int idx, struct wpa_ssid *ssid)
 657 {
 658         char field[20], *value;
 659         int res;
 660
 661         res = os_snprintf(field, sizeof(field), "wep_key%d", idx);
 662         if (os_snprintf_error(sizeof(field), res))
 663                 return;
 664         value = wpa_config_get(ssid, field);
 665         if (value) {
 666                 fprintf(f, "\t%s=%s\n", field, value);
 667                 os_free(value);
 668         }
 669 }
 670
 671
 672 #ifdef CONFIG_P2P
 673
 674 static void write_go_p2p_dev_addr(FILE *f, struct wpa_ssid *ssid)
 675 {
 676         char *value = wpa_config_get(ssid, "go_p2p_dev_addr");
 677         if (value == NULL)
 678                 return;
 679         fprintf(f, "\tgo_p2p_dev_addr=%s\n", value);
 680         os_free(value);
 681 }
 682
 683 static void write_p2p_client_list(FILE *f, struct wpa_ssid *ssid)
 684 {
 685         char *value = wpa_config_get(ssid, "p2p_client_list");
 686         if (value == NULL)
 687                 return;
 688         fprintf(f, "\tp2p_client_list=%s\n", value);
 689         os_free(value);
 690 }
 691
 692
 693 static void write_psk_list(FILE *f, struct wpa_ssid *ssid)
 694 {
 695         struct psk_list_entry *psk;
 696         char hex[32 * 2 + 1];
 697
 698         dl_list_for_each(psk, &ssid->psk_list, struct psk_list_entry, list) {
 699                 wpa_snprintf_hex(hex, sizeof(hex), psk->psk, sizeof(psk->psk));
 700                 fprintf(f, "\tpsk_list=%s" MACSTR "-%s\n",
 701                         psk->p2p ? "P2P-" : "", MAC2STR(psk->addr), hex);
 702         }
 703 }
 704
 705 #endif /* CONFIG_P2P */
 706
 707
 708 #ifdef CONFIG_MACSEC
 709
 710 static void write_mka_cak(FILE *f, struct wpa_ssid *ssid)
 711 {
 712         char *value;
 713
 714         if (!(ssid->mka_psk_set & MKA_PSK_SET_CAK))
 715                 return;
 716
 717         value = wpa_config_get(ssid, "mka_cak");
 718         if (!value)
 719                 return;
 720         fprintf(f, "\tmka_cak=%s\n", value);
 721         os_free(value);
 722 }
 723
 724
 725 static void write_mka_ckn(FILE *f, struct wpa_ssid *ssid)
 726 {
 727         char *value;
 728
 729         if (!(ssid->mka_psk_set & MKA_PSK_SET_CKN))
 730                 return;
 731
 732         value = wpa_config_get(ssid, "mka_ckn");
 733         if (!value)
 734                 return;
 735         fprintf(f, "\tmka_ckn=%s\n", value);
 736         os_free(value);
 737 }
 738
 739 #endif /* CONFIG_MACSEC */
 740
 741
 742 static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid)
 743 {
 744         int i;
 745
 746 #define STR(t) write_str(f, #t, ssid)
 747 #define INT(t) write_int(f, #t, ssid->t, 0)
 748 #define INTe(t) write_int(f, #t, ssid->eap.t, 0)
 749 #define INT_DEF(t, def) write_int(f, #t, ssid->t, def)
 750 #define INT_DEFe(t, def) write_int(f, #t, ssid->eap.t, def)
 751
 752         STR(ssid);
 753         INT(scan_ssid);
 754         write_bssid(f, ssid);
 755         write_bssid_hint(f, ssid);
 756         write_str(f, "bssid_blacklist", ssid);
 757         write_str(f, "bssid_whitelist", ssid);
 758         write_psk(f, ssid);
 759         INT(mem_only_psk);
 760         STR(sae_password);
 761         STR(sae_password_id);
 762         write_proto(f, ssid);
 763         write_key_mgmt(f, ssid);
 764         INT_DEF(bg_scan_period, DEFAULT_BG_SCAN_PERIOD);
 765         write_pairwise(f, ssid);
 766         write_group(f, ssid);
 767         write_group_mgmt(f, ssid);
 768         write_auth_alg(f, ssid);
 769         STR(bgscan);
 770         STR(autoscan);
 771         STR(scan_freq);
 772 #ifdef IEEE8021X_EAPOL
 773         write_eap(f, ssid);
 774         STR(identity);
 775         STR(anonymous_identity);
 776         STR(imsi_identity);
 777         STR(password);
 778         STR(ca_cert);
 779         STR(ca_path);
 780         STR(client_cert);
 781         STR(private_key);
 782         STR(private_key_passwd);
 783         STR(dh_file);
 784         STR(subject_match);
 785         STR(check_cert_subject);
 786         STR(altsubject_match);
 787         STR(domain_suffix_match);
 788         STR(domain_match);
 789         STR(ca_cert2);
 790         STR(ca_path2);
 791         STR(client_cert2);
 792         STR(private_key2);
 793         STR(private_key2_passwd);
 794         STR(dh_file2);
 795         STR(subject_match2);
 796         STR(check_cert_subject2);
 797         STR(altsubject_match2);
 798         STR(domain_suffix_match2);
 799         STR(domain_match2);
 800         STR(phase1);
 801         STR(phase2);
 802         STR(pcsc);
 803         STR(pin);
 804         STR(engine_id);
 805         STR(key_id);
 806         STR(cert_id);
 807         STR(ca_cert_id);
 808         STR(key2_id);
 809         STR(pin2);
 810         STR(engine2_id);
 811         STR(cert2_id);
 812         STR(ca_cert2_id);
 813         INTe(engine);
 814         INTe(engine2);
 815         INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
 816         STR(openssl_ciphers);
 817         INTe(erp);
 818 #endif /* IEEE8021X_EAPOL */
 819         for (i = 0; i < 4; i++)
 820                 write_wep_key(f, i, ssid);
 821         INT(wep_tx_keyidx);
 822         INT(priority);
 823 #ifdef IEEE8021X_EAPOL
 824         INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
 825         STR(pac_file);
 826         INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
 827         INTe(ocsp);
 828         INT_DEFe(sim_num, DEFAULT_USER_SELECTED_SIM);
 829 #endif /* IEEE8021X_EAPOL */
 830         INT(mode);
 831         INT(no_auto_peer);
 832         INT(frequency);
 833         INT(fixed_freq);
 834 #ifdef CONFIG_ACS
 835         INT(acs);
 836 #endif /* CONFIG_ACS */
 837         write_int(f, "proactive_key_caching", ssid->proactive_key_caching, -1);
 838         INT(disabled);
 839         INT(mixed_cell);
 840         INT(vht);
 841         INT_DEF(ht, 1);
 842         INT(ht40);
 843         INT_DEF(max_oper_chwidth, DEFAULT_MAX_OPER_CHWIDTH);
 844         INT(vht_center_freq1);
 845         INT(vht_center_freq2);
 846         INT(pbss);
 847         INT(wps_disabled);
 848         INT(fils_dh_group);
 849 #ifdef CONFIG_IEEE80211W
 850         write_int(f, "ieee80211w", ssid->ieee80211w,
 851                   MGMT_FRAME_PROTECTION_DEFAULT);
 852 #endif /* CONFIG_IEEE80211W */
 853         STR(id_str);
 854 #ifdef CONFIG_P2P
 855         write_go_p2p_dev_addr(f, ssid);
 856         write_p2p_client_list(f, ssid);
 857         write_psk_list(f, ssid);
 858 #endif /* CONFIG_P2P */
 859         INT(ap_max_inactivity);
 860         INT(dtim_period);
 861         INT(beacon_int);
 862 #ifdef CONFIG_MACSEC
 863         INT(macsec_policy);
 864         write_mka_cak(f, ssid);
 865         write_mka_ckn(f, ssid);
 866         INT(macsec_integ_only);
 867         INT(macsec_replay_protect);
 868         INT(macsec_replay_window);
 869         INT(macsec_port);
 870         INT_DEF(mka_priority, DEFAULT_PRIO_NOT_KEY_SERVER);
 871 #endif /* CONFIG_MACSEC */
 872 #ifdef CONFIG_HS20
 873         INT(update_identifier);
 874         STR(roaming_consortium_selection);
 875 #endif /* CONFIG_HS20 */
 876         write_int(f, "mac_addr", ssid->mac_addr, -1);
 877 #ifdef CONFIG_MESH
 878         STR(mesh_basic_rates);
 879         INT_DEF(dot11MeshMaxRetries, DEFAULT_MESH_MAX_RETRIES);
 880         INT_DEF(dot11MeshRetryTimeout, DEFAULT_MESH_RETRY_TIMEOUT);
 881         INT_DEF(dot11MeshConfirmTimeout, DEFAULT_MESH_CONFIRM_TIMEOUT);
 882         INT_DEF(dot11MeshHoldingTimeout, DEFAULT_MESH_HOLDING_TIMEOUT);
 883         INT_DEF(mesh_rssi_threshold, DEFAULT_MESH_RSSI_THRESHOLD);
 884 #endif /* CONFIG_MESH */
 885         INT(wpa_ptk_rekey);
 886         INT(group_rekey);
 887         INT(ignore_broadcast_ssid);
 888 #ifdef CONFIG_DPP
 889         STR(dpp_connector);
 890         STR(dpp_netaccesskey);
 891         INT(dpp_netaccesskey_expiry);
 892         STR(dpp_csign);
 893 #endif /* CONFIG_DPP */
 894         INT(owe_group);
 895         INT(owe_only);
 896         INT(multi_ap_backhaul_sta);
 897         INT(ft_eap_pmksa_caching);
 898 #ifdef CONFIG_HT_OVERRIDES
 899         INT_DEF(disable_ht, DEFAULT_DISABLE_HT);
 900         INT_DEF(disable_ht40, DEFAULT_DISABLE_HT40);
 901         INT_DEF(disable_sgi, DEFAULT_DISABLE_SGI);
 902         INT_DEF(disable_ldpc, DEFAULT_DISABLE_LDPC);
 903         INT(ht40_intolerant);
 904         INT_DEF(tx_stbc, DEFAULT_TX_STBC);
 905         INT_DEF(rx_stbc, DEFAULT_RX_STBC);
 906         INT_DEF(disable_max_amsdu, DEFAULT_DISABLE_MAX_AMSDU);
 907         INT_DEF(ampdu_factor, DEFAULT_AMPDU_FACTOR);
 908         INT_DEF(ampdu_density, DEFAULT_AMPDU_DENSITY);
 909         STR(ht_mcs);
 910 #endif /* CONFIG_HT_OVERRIDES */
 911 #ifdef CONFIG_VHT_OVERRIDES
 912         INT(disable_vht);
 913         INT(vht_capa);
 914         INT(vht_capa_mask);
 915         INT_DEF(vht_rx_mcs_nss_1, -1);
 916         INT_DEF(vht_rx_mcs_nss_2, -1);
 917         INT_DEF(vht_rx_mcs_nss_3, -1);
 918         INT_DEF(vht_rx_mcs_nss_4, -1);
 919         INT_DEF(vht_rx_mcs_nss_5, -1);
 920         INT_DEF(vht_rx_mcs_nss_6, -1);
 921         INT_DEF(vht_rx_mcs_nss_7, -1);
 922         INT_DEF(vht_rx_mcs_nss_8, -1);
 923         INT_DEF(vht_tx_mcs_nss_1, -1);
 924         INT_DEF(vht_tx_mcs_nss_2, -1);
 925         INT_DEF(vht_tx_mcs_nss_3, -1);
 926         INT_DEF(vht_tx_mcs_nss_4, -1);
 927         INT_DEF(vht_tx_mcs_nss_5, -1);
 928         INT_DEF(vht_tx_mcs_nss_6, -1);
 929         INT_DEF(vht_tx_mcs_nss_7, -1);
 930         INT_DEF(vht_tx_mcs_nss_8, -1);
 931 #endif /* CONFIG_VHT_OVERRIDES */
 932
 933 #undef STR
 934 #undef INT
 935 #undef INT_DEF
 936 }
 937
 938
 939 static void wpa_config_write_cred(FILE *f, struct wpa_cred *cred)
 940 {
 941         size_t i;
 942
 943         if (cred->priority)
 944                 fprintf(f, "\tpriority=%d\n", cred->priority);
 945         if (cred->pcsc)
 946                 fprintf(f, "\tpcsc=%d\n", cred->pcsc);
 947         if (cred->realm)
 948                 fprintf(f, "\trealm=\"%s\"\n", cred->realm);
 949         if (cred->username)
 950                 fprintf(f, "\tusername=\"%s\"\n", cred->username);
 951         if (cred->password && cred->ext_password)
 952                 fprintf(f, "\tpassword=ext:%s\n", cred->password);
 953         else if (cred->password)
 954                 fprintf(f, "\tpassword=\"%s\"\n", cred->password);
 955         if (cred->ca_cert)
 956                 fprintf(f, "\tca_cert=\"%s\"\n", cred->ca_cert);
 957         if (cred->client_cert)
 958                 fprintf(f, "\tclient_cert=\"%s\"\n", cred->client_cert);
 959         if (cred->private_key)
 960                 fprintf(f, "\tprivate_key=\"%s\"\n", cred->private_key);
 961         if (cred->private_key_passwd)
 962                 fprintf(f, "\tprivate_key_passwd=\"%s\"\n",
 963                         cred->private_key_passwd);
 964         if (cred->imsi)
 965                 fprintf(f, "\timsi=\"%s\"\n", cred->imsi);
 966         if (cred->milenage)
 967                 fprintf(f, "\tmilenage=\"%s\"\n", cred->milenage);
 968         for (i = 0; i < cred->num_domain; i++)
 969                 fprintf(f, "\tdomain=\"%s\"\n", cred->domain[i]);
 970         if (cred->domain_suffix_match)
 971                 fprintf(f, "\tdomain_suffix_match=\"%s\"\n",
 972                         cred->domain_suffix_match);
 973         if (cred->roaming_consortium_len) {
 974                 fprintf(f, "\troaming_consortium=");
 975                 for (i = 0; i < cred->roaming_consortium_len; i++)
 976                         fprintf(f, "%02x", cred->roaming_consortium[i]);
 977                 fprintf(f, "\n");
 978         }
 979         if (cred->eap_method) {
 980                 const char *name;
 981                 name = eap_get_name(cred->eap_method[0].vendor,
 982                                     cred->eap_method[0].method);
 983                 if (name)
 984                         fprintf(f, "\teap=%s\n", name);
 985         }
 986         if (cred->phase1)
 987                 fprintf(f, "\tphase1=\"%s\"\n", cred->phase1);
 988         if (cred->phase2)
 989                 fprintf(f, "\tphase2=\"%s\"\n", cred->phase2);
 990         if (cred->excluded_ssid) {
 991                 size_t j;
 992                 for (i = 0; i < cred->num_excluded_ssid; i++) {
 993                         struct excluded_ssid *e = &cred->excluded_ssid[i];
 994                         fprintf(f, "\texcluded_ssid=");
 995                         for (j = 0; j < e->ssid_len; j++)
 996                                 fprintf(f, "%02x", e->ssid[j]);
 997                         fprintf(f, "\n");
 998                 }
 999         }
1000         if (cred->roaming_partner) {
1001                 for (i = 0; i < cred->num_roaming_partner; i++) {
1002                         struct roaming_partner *p = &cred->roaming_partner[i];
1003                         fprintf(f, "\troaming_partner=\"%s,%d,%u,%s\"\n",
1004                                 p->fqdn, p->exact_match, p->priority,
1005                                 p->country);
1006                 }
1007         }
1008         if (cred->update_identifier)
1009                 fprintf(f, "\tupdate_identifier=%d\n", cred->update_identifier);
1010
1011         if (cred->provisioning_sp)
1012                 fprintf(f, "\tprovisioning_sp=\"%s\"\n", cred->provisioning_sp);
1013         if (cred->sp_priority)
1014                 fprintf(f, "\tsp_priority=%d\n", cred->sp_priority);
1015
1016         if (cred->min_dl_bandwidth_home)
1017                 fprintf(f, "\tmin_dl_bandwidth_home=%u\n",
1018                         cred->min_dl_bandwidth_home);
1019         if (cred->min_ul_bandwidth_home)
1020                 fprintf(f, "\tmin_ul_bandwidth_home=%u\n",
1021                         cred->min_ul_bandwidth_home);
1022         if (cred->min_dl_bandwidth_roaming)
1023                 fprintf(f, "\tmin_dl_bandwidth_roaming=%u\n",
1024                         cred->min_dl_bandwidth_roaming);
1025         if (cred->min_ul_bandwidth_roaming)
1026                 fprintf(f, "\tmin_ul_bandwidth_roaming=%u\n",
1027                         cred->min_ul_bandwidth_roaming);
1028
1029         if (cred->max_bss_load)
1030                 fprintf(f, "\tmax_bss_load=%u\n",
1031                         cred->max_bss_load);
1032
1033         if (cred->ocsp)
1034                 fprintf(f, "\tocsp=%d\n", cred->ocsp);
1035
1036         if (cred->num_req_conn_capab) {
1037                 for (i = 0; i < cred->num_req_conn_capab; i++) {
1038                         int *ports;
1039
1040                         fprintf(f, "\treq_conn_capab=%u",
1041                                 cred->req_conn_capab_proto[i]);
1042                         ports = cred->req_conn_capab_port[i];
1043                         if (ports) {
1044                                 int j;
1045                                 for (j = 0; ports[j] != -1; j++) {
1046                                         fprintf(f, "%s%d", j > 0 ? "," : ":",
1047                                                 ports[j]);
1048                                 }
1049                         }
1050                         fprintf(f, "\n");
1051                 }
1052         }
1053
1054         if (cred->required_roaming_consortium_len) {
1055                 fprintf(f, "\trequired_roaming_consortium=");
1056                 for (i = 0; i < cred->required_roaming_consortium_len; i++)
1057                         fprintf(f, "%02x",
1058                                 cred->required_roaming_consortium[i]);
1059                 fprintf(f, "\n");
1060         }
1061
1062         if (cred->num_roaming_consortiums) {
1063                 size_t j;
1064
1065                 fprintf(f, "\troaming_consortiums=\"");
1066                 for (i = 0; i < cred->num_roaming_consortiums; i++) {
1067                         if (i > 0)
1068                                 fprintf(f, ",");
1069                         for (j = 0; j < cred->roaming_consortiums_len[i]; j++)
1070                                 fprintf(f, "%02x",
1071                                         cred->roaming_consortiums[i][j]);
1072                 }
1073                 fprintf(f, "\"\n");
1074         }
1075
1076         if (cred->sim_num != DEFAULT_USER_SELECTED_SIM)
1077                 fprintf(f, "\tsim_num=%d\n", cred->sim_num);
1078 }
1079
1080
1081 #ifndef CONFIG_NO_CONFIG_BLOBS
1082 static int wpa_config_write_blob(FILE *f, struct wpa_config_blob *blob)
1083 {
1084         unsigned char *encoded;
1085
1086         encoded = base64_encode(blob->data, blob->len, NULL);
1087         if (encoded == NULL)
1088                 return -1;
1089
1090         fprintf(f, "\nblob-base64-%s={\n%s}\n", blob->name, encoded);
1091         os_free(encoded);
1092         return 0;
1093 }
1094 #endif /* CONFIG_NO_CONFIG_BLOBS */
1095
1096
1097 static void write_global_bin(FILE *f, const char *field,
1098                              const struct wpabuf *val)
1099 {
1100         size_t i;
1101         const u8 *pos;
1102
1103         if (val == NULL)
1104                 return;
1105
1106         fprintf(f, "%s=", field);
1107         pos = wpabuf_head(val);
1108         for (i = 0; i < wpabuf_len(val); i++)
1109                 fprintf(f, "%02X", *pos++);
1110         fprintf(f, "\n");
1111 }
1112
1113
1114 static void wpa_config_write_global(FILE *f, struct wpa_config *config)
1115 {
1116 #ifdef CONFIG_CTRL_IFACE
1117         if (config->ctrl_interface)
1118                 fprintf(f, "ctrl_interface=%s\n", config->ctrl_interface);
1119         if (config->ctrl_interface_group)
1120                 fprintf(f, "ctrl_interface_group=%s\n",
1121                         config->ctrl_interface_group);
1122 #endif /* CONFIG_CTRL_IFACE */
1123         if (config->eapol_version != DEFAULT_EAPOL_VERSION)
1124                 fprintf(f, "eapol_version=%d\n", config->eapol_version);
1125         if (config->ap_scan != DEFAULT_AP_SCAN)
1126                 fprintf(f, "ap_scan=%d\n", config->ap_scan);
1127         if (config->disable_scan_offload)
1128                 fprintf(f, "disable_scan_offload=%d\n",
1129                         config->disable_scan_offload);
1130         if (config->fast_reauth != DEFAULT_FAST_REAUTH)
1131                 fprintf(f, "fast_reauth=%d\n", config->fast_reauth);
1132         if (config->opensc_engine_path)
1133                 fprintf(f, "opensc_engine_path=%s\n",
1134                         config->opensc_engine_path);
1135         if (config->pkcs11_engine_path)
1136                 fprintf(f, "pkcs11_engine_path=%s\n",
1137                         config->pkcs11_engine_path);
1138         if (config->pkcs11_module_path)
1139                 fprintf(f, "pkcs11_module_path=%s\n",
1140                         config->pkcs11_module_path);
1141         if (config->openssl_ciphers)
1142                 fprintf(f, "openssl_ciphers=%s\n", config->openssl_ciphers);
1143         if (config->pcsc_reader)
1144                 fprintf(f, "pcsc_reader=%s\n", config->pcsc_reader);
1145         if (config->pcsc_pin)
1146                 fprintf(f, "pcsc_pin=%s\n", config->pcsc_pin);
1147         if (config->driver_param)
1148                 fprintf(f, "driver_param=%s\n", config->driver_param);
1149         if (config->dot11RSNAConfigPMKLifetime)
1150                 fprintf(f, "dot11RSNAConfigPMKLifetime=%u\n",
1151                         config->dot11RSNAConfigPMKLifetime);
1152         if (config->dot11RSNAConfigPMKReauthThreshold)
1153                 fprintf(f, "dot11RSNAConfigPMKReauthThreshold=%u\n",
1154                         config->dot11RSNAConfigPMKReauthThreshold);
1155         if (config->dot11RSNAConfigSATimeout)
1156                 fprintf(f, "dot11RSNAConfigSATimeout=%u\n",
1157                         config->dot11RSNAConfigSATimeout);
1158         if (config->update_config)
1159                 fprintf(f, "update_config=%d\n", config->update_config);
1160 #ifdef CONFIG_WPS
1161         if (!is_nil_uuid(config->uuid)) {
1162                 char buf[40];
1163                 uuid_bin2str(config->uuid, buf, sizeof(buf));
1164                 fprintf(f, "uuid=%s\n", buf);
1165         }
1166         if (config->auto_uuid)
1167                 fprintf(f, "auto_uuid=%d\n", config->auto_uuid);
1168         if (config->device_name)
1169                 fprintf(f, "device_name=%s\n", config->device_name);
1170         if (config->manufacturer)
1171                 fprintf(f, "manufacturer=%s\n", config->manufacturer);
1172         if (config->model_name)
1173                 fprintf(f, "model_name=%s\n", config->model_name);
1174         if (config->model_number)
1175                 fprintf(f, "model_number=%s\n", config->model_number);
1176         if (config->serial_number)
1177                 fprintf(f, "serial_number=%s\n", config->serial_number);
1178         {
1179                 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
1180                 buf = wps_dev_type_bin2str(config->device_type,
1181                                            _buf, sizeof(_buf));
1182                 if (os_strcmp(buf, "0-00000000-0") != 0)
1183                         fprintf(f, "device_type=%s\n", buf);
1184         }
1185         if (WPA_GET_BE32(config->os_version))
1186                 fprintf(f, "os_version=%08x\n",
1187                         WPA_GET_BE32(config->os_version));
1188         if (config->config_methods)
1189                 fprintf(f, "config_methods=%s\n", config->config_methods);
1190         if (config->wps_cred_processing)
1191                 fprintf(f, "wps_cred_processing=%d\n",
1192                         config->wps_cred_processing);
1193         if (config->wps_cred_add_sae)
1194                 fprintf(f, "wps_cred_add_sae=%d\n",
1195                         config->wps_cred_add_sae);
1196         if (config->wps_vendor_ext_m1) {
1197                 int i, len = wpabuf_len(config->wps_vendor_ext_m1);
1198                 const u8 *p = wpabuf_head_u8(config->wps_vendor_ext_m1);
1199                 if (len > 0) {
1200                         fprintf(f, "wps_vendor_ext_m1=");
1201                         for (i = 0; i < len; i++)
1202                                 fprintf(f, "%02x", *p++);
1203                         fprintf(f, "\n");
1204                 }
1205         }
1206 #endif /* CONFIG_WPS */
1207 #ifdef CONFIG_P2P
1208         {
1209                 int i;
1210                 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
1211
1212                 for (i = 0; i < config->num_sec_device_types; i++) {
1213                         buf = wps_dev_type_bin2str(config->sec_device_type[i],
1214                                                    _buf, sizeof(_buf));
1215                         if (buf)
1216                                 fprintf(f, "sec_device_type=%s\n", buf);
1217                 }
1218         }
1219         if (config->p2p_listen_reg_class)
1220                 fprintf(f, "p2p_listen_reg_class=%d\n",
1221                         config->p2p_listen_reg_class);
1222         if (config->p2p_listen_channel)
1223                 fprintf(f, "p2p_listen_channel=%d\n",
1224                         config->p2p_listen_channel);
1225         if (config->p2p_oper_reg_class)
1226                 fprintf(f, "p2p_oper_reg_class=%d\n",
1227                         config->p2p_oper_reg_class);
1228         if (config->p2p_oper_channel)
1229                 fprintf(f, "p2p_oper_channel=%d\n", config->p2p_oper_channel);
1230         if (config->p2p_go_intent != DEFAULT_P2P_GO_INTENT)
1231                 fprintf(f, "p2p_go_intent=%d\n", config->p2p_go_intent);
1232         if (config->p2p_ssid_postfix)
1233                 fprintf(f, "p2p_ssid_postfix=%s\n", config->p2p_ssid_postfix);
1234         if (config->persistent_reconnect)
1235                 fprintf(f, "persistent_reconnect=%d\n",
1236                         config->persistent_reconnect);
1237         if (config->p2p_intra_bss != DEFAULT_P2P_INTRA_BSS)
1238                 fprintf(f, "p2p_intra_bss=%d\n", config->p2p_intra_bss);
1239         if (config->p2p_group_idle)
1240                 fprintf(f, "p2p_group_idle=%d\n", config->p2p_group_idle);
1241         if (config->p2p_passphrase_len)
1242                 fprintf(f, "p2p_passphrase_len=%u\n",
1243                         config->p2p_passphrase_len);
1244         if (config->p2p_pref_chan) {
1245                 unsigned int i;
1246                 fprintf(f, "p2p_pref_chan=");
1247                 for (i = 0; i < config->num_p2p_pref_chan; i++) {
1248                         fprintf(f, "%s%u:%u", i > 0 ? "," : "",
1249                                 config->p2p_pref_chan[i].op_class,
1250                                 config->p2p_pref_chan[i].chan);
1251                 }
1252                 fprintf(f, "\n");
1253         }
1254         if (config->p2p_no_go_freq.num) {
1255                 char *val = freq_range_list_str(&config->p2p_no_go_freq);
1256                 if (val) {
1257                         fprintf(f, "p2p_no_go_freq=%s\n", val);
1258                         os_free(val);
1259                 }
1260         }
1261         if (config->p2p_add_cli_chan)
1262                 fprintf(f, "p2p_add_cli_chan=%d\n", config->p2p_add_cli_chan);
1263         if (config->p2p_optimize_listen_chan !=
1264             DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN)
1265                 fprintf(f, "p2p_optimize_listen_chan=%d\n",
1266                         config->p2p_optimize_listen_chan);
1267         if (config->p2p_go_ht40)
1268                 fprintf(f, "p2p_go_ht40=%d\n", config->p2p_go_ht40);
1269         if (config->p2p_go_vht)
1270                 fprintf(f, "p2p_go_vht=%d\n", config->p2p_go_vht);
1271         if (config->p2p_go_he)
1272                 fprintf(f, "p2p_go_he=%d\n", config->p2p_go_he);
1273         if (config->p2p_go_ctwindow != DEFAULT_P2P_GO_CTWINDOW)
1274                 fprintf(f, "p2p_go_ctwindow=%d\n", config->p2p_go_ctwindow);
1275         if (config->p2p_disabled)
1276                 fprintf(f, "p2p_disabled=%d\n", config->p2p_disabled);
1277         if (config->p2p_no_group_iface)
1278                 fprintf(f, "p2p_no_group_iface=%d\n",
1279                         config->p2p_no_group_iface);
1280         if (config->p2p_ignore_shared_freq)
1281                 fprintf(f, "p2p_ignore_shared_freq=%d\n",
1282                         config->p2p_ignore_shared_freq);
1283         if (config->p2p_cli_probe)
1284                 fprintf(f, "p2p_cli_probe=%d\n", config->p2p_cli_probe);
1285         if (config->p2p_go_freq_change_policy != DEFAULT_P2P_GO_FREQ_MOVE)
1286                 fprintf(f, "p2p_go_freq_change_policy=%u\n",
1287                         config->p2p_go_freq_change_policy);
1288         if (WPA_GET_BE32(config->ip_addr_go))
1289                 fprintf(f, "ip_addr_go=%u.%u.%u.%u\n",
1290                         config->ip_addr_go[0], config->ip_addr_go[1],
1291                         config->ip_addr_go[2], config->ip_addr_go[3]);
1292         if (WPA_GET_BE32(config->ip_addr_mask))
1293                 fprintf(f, "ip_addr_mask=%u.%u.%u.%u\n",
1294                         config->ip_addr_mask[0], config->ip_addr_mask[1],
1295                         config->ip_addr_mask[2], config->ip_addr_mask[3]);
1296         if (WPA_GET_BE32(config->ip_addr_start))
1297                 fprintf(f, "ip_addr_start=%u.%u.%u.%u\n",
1298                         config->ip_addr_start[0], config->ip_addr_start[1],
1299                         config->ip_addr_start[2], config->ip_addr_start[3]);
1300         if (WPA_GET_BE32(config->ip_addr_end))
1301                 fprintf(f, "ip_addr_end=%u.%u.%u.%u\n",
1302                         config->ip_addr_end[0], config->ip_addr_end[1],
1303                         config->ip_addr_end[2], config->ip_addr_end[3]);
1304 #endif /* CONFIG_P2P */
1305         if (config->country[0] && config->country[1]) {
1306                 fprintf(f, "country=%c%c\n",
1307                         config->country[0], config->country[1]);
1308         }
1309         if (config->bss_max_count != DEFAULT_BSS_MAX_COUNT)
1310                 fprintf(f, "bss_max_count=%u\n", config->bss_max_count);
1311         if (config->bss_expiration_age != DEFAULT_BSS_EXPIRATION_AGE)
1312                 fprintf(f, "bss_expiration_age=%u\n",
1313                         config->bss_expiration_age);
1314         if (config->bss_expiration_scan_count !=
1315             DEFAULT_BSS_EXPIRATION_SCAN_COUNT)
1316                 fprintf(f, "bss_expiration_scan_count=%u\n",
1317                         config->bss_expiration_scan_count);
1318         if (config->filter_ssids)
1319                 fprintf(f, "filter_ssids=%d\n", config->filter_ssids);
1320         if (config->filter_rssi)
1321                 fprintf(f, "filter_rssi=%d\n", config->filter_rssi);
1322         if (config->max_num_sta != DEFAULT_MAX_NUM_STA)
1323                 fprintf(f, "max_num_sta=%u\n", config->max_num_sta);
1324         if (config->ap_isolate != DEFAULT_AP_ISOLATE)
1325                 fprintf(f, "ap_isolate=%u\n", config->ap_isolate);
1326         if (config->disassoc_low_ack)
1327                 fprintf(f, "disassoc_low_ack=%d\n", config->disassoc_low_ack);
1328 #ifdef CONFIG_HS20
1329         if (config->hs20)
1330                 fprintf(f, "hs20=1\n");
1331 #endif /* CONFIG_HS20 */
1332 #ifdef CONFIG_INTERWORKING
1333         if (config->interworking)
1334                 fprintf(f, "interworking=%d\n", config->interworking);
1335         if (!is_zero_ether_addr(config->hessid))
1336                 fprintf(f, "hessid=" MACSTR "\n", MAC2STR(config->hessid));
1337         if (config->access_network_type != DEFAULT_ACCESS_NETWORK_TYPE)
1338                 fprintf(f, "access_network_type=%d\n",
1339                         config->access_network_type);
1340         if (config->go_interworking)
1341                 fprintf(f, "go_interworking=%d\n", config->go_interworking);
1342         if (config->go_access_network_type)
1343                 fprintf(f, "go_access_network_type=%d\n",
1344                         config->go_access_network_type);
1345         if (config->go_internet)
1346                 fprintf(f, "go_internet=%d\n", config->go_internet);
1347         if (config->go_venue_group)
1348                 fprintf(f, "go_venue_group=%d\n", config->go_venue_group);
1349         if (config->go_venue_type)
1350                 fprintf(f, "go_venue_type=%d\n", config->go_venue_type);
1351 #endif /* CONFIG_INTERWORKING */
1352         if (config->pbc_in_m1)
1353                 fprintf(f, "pbc_in_m1=%d\n", config->pbc_in_m1);
1354         if (config->wps_nfc_pw_from_config) {
1355                 if (config->wps_nfc_dev_pw_id)
1356                         fprintf(f, "wps_nfc_dev_pw_id=%d\n",
1357                                 config->wps_nfc_dev_pw_id);
1358                 write_global_bin(f, "wps_nfc_dh_pubkey",
1359                                  config->wps_nfc_dh_pubkey);
1360                 write_global_bin(f, "wps_nfc_dh_privkey",
1361                                  config->wps_nfc_dh_privkey);
1362                 write_global_bin(f, "wps_nfc_dev_pw", config->wps_nfc_dev_pw);
1363         }
1364
1365         if (config->ext_password_backend)
1366                 fprintf(f, "ext_password_backend=%s\n",
1367                         config->ext_password_backend);
1368         if (config->p2p_go_max_inactivity != DEFAULT_P2P_GO_MAX_INACTIVITY)
1369                 fprintf(f, "p2p_go_max_inactivity=%d\n",
1370                         config->p2p_go_max_inactivity);
1371         if (config->auto_interworking)
1372                 fprintf(f, "auto_interworking=%d\n",
1373                         config->auto_interworking);
1374         if (config->okc)
1375                 fprintf(f, "okc=%d\n", config->okc);
1376         if (config->pmf)
1377                 fprintf(f, "pmf=%d\n", config->pmf);
1378         if (config->dtim_period)
1379                 fprintf(f, "dtim_period=%d\n", config->dtim_period);
1380         if (config->beacon_int)
1381                 fprintf(f, "beacon_int=%d\n", config->beacon_int);
1382
1383         if (config->sae_groups) {
1384                 int i;
1385                 fprintf(f, "sae_groups=");
1386                 for (i = 0; config->sae_groups[i] > 0; i++) {
1387                         fprintf(f, "%s%d", i > 0 ? " " : "",
1388                                 config->sae_groups[i]);
1389                 }
1390                 fprintf(f, "\n");
1391         }
1392
1393         if (config->ap_vendor_elements) {
1394                 int i, len = wpabuf_len(config->ap_vendor_elements);
1395                 const u8 *p = wpabuf_head_u8(config->ap_vendor_elements);
1396                 if (len > 0) {
1397                         fprintf(f, "ap_vendor_elements=");
1398                         for (i = 0; i < len; i++)
1399                                 fprintf(f, "%02x", *p++);
1400                         fprintf(f, "\n");
1401                 }
1402         }
1403
1404         if (config->ignore_old_scan_res)
1405                 fprintf(f, "ignore_old_scan_res=%d\n",
1406                         config->ignore_old_scan_res);
1407
1408         if (config->freq_list && config->freq_list[0]) {
1409                 int i;
1410                 fprintf(f, "freq_list=");
1411                 for (i = 0; config->freq_list[i]; i++) {
1412                         fprintf(f, "%s%d", i > 0 ? " " : "",
1413                                 config->freq_list[i]);
1414                 }
1415                 fprintf(f, "\n");
1416         }
1417         if (config->scan_cur_freq != DEFAULT_SCAN_CUR_FREQ)
1418                 fprintf(f, "scan_cur_freq=%d\n", config->scan_cur_freq);
1419
1420         if (config->sched_scan_interval)
1421                 fprintf(f, "sched_scan_interval=%u\n",
1422                         config->sched_scan_interval);
1423
1424         if (config->sched_scan_start_delay)
1425                 fprintf(f, "sched_scan_start_delay=%u\n",
1426                         config->sched_scan_start_delay);
1427
1428         if (config->external_sim)
1429                 fprintf(f, "external_sim=%d\n", config->external_sim);
1430
1431         if (config->tdls_external_control)
1432                 fprintf(f, "tdls_external_control=%d\n",
1433                         config->tdls_external_control);
1434
1435         if (config->wowlan_triggers)
1436                 fprintf(f, "wowlan_triggers=%s\n",
1437                         config->wowlan_triggers);
1438
1439         if (config->bgscan)
1440                 fprintf(f, "bgscan=\"%s\"\n", config->bgscan);
1441
1442         if (config->autoscan)
1443                 fprintf(f, "autoscan=%s\n", config->autoscan);
1444
1445         if (config->p2p_search_delay != DEFAULT_P2P_SEARCH_DELAY)
1446                 fprintf(f, "p2p_search_delay=%u\n",
1447                         config->p2p_search_delay);
1448
1449         if (config->mac_addr)
1450                 fprintf(f, "mac_addr=%d\n", config->mac_addr);
1451
1452         if (config->rand_addr_lifetime != DEFAULT_RAND_ADDR_LIFETIME)
1453                 fprintf(f, "rand_addr_lifetime=%u\n",
1454                         config->rand_addr_lifetime);
1455
1456         if (config->preassoc_mac_addr)
1457                 fprintf(f, "preassoc_mac_addr=%d\n", config->preassoc_mac_addr);
1458
1459         if (config->key_mgmt_offload != DEFAULT_KEY_MGMT_OFFLOAD)
1460                 fprintf(f, "key_mgmt_offload=%d\n", config->key_mgmt_offload);
1461
1462         if (config->user_mpm != DEFAULT_USER_MPM)
1463                 fprintf(f, "user_mpm=%d\n", config->user_mpm);
1464
1465         if (config->max_peer_links != DEFAULT_MAX_PEER_LINKS)
1466                 fprintf(f, "max_peer_links=%d\n", config->max_peer_links);
1467
1468         if (config->cert_in_cb != DEFAULT_CERT_IN_CB)
1469                 fprintf(f, "cert_in_cb=%d\n", config->cert_in_cb);
1470
1471         if (config->mesh_max_inactivity != DEFAULT_MESH_MAX_INACTIVITY)
1472                 fprintf(f, "mesh_max_inactivity=%d\n",
1473                         config->mesh_max_inactivity);
1474
1475         if (config->dot11RSNASAERetransPeriod !=
1476             DEFAULT_DOT11_RSNA_SAE_RETRANS_PERIOD)
1477                 fprintf(f, "dot11RSNASAERetransPeriod=%d\n",
1478                         config->dot11RSNASAERetransPeriod);
1479
1480         if (config->passive_scan)
1481                 fprintf(f, "passive_scan=%d\n", config->passive_scan);
1482
1483         if (config->reassoc_same_bss_optim)
1484                 fprintf(f, "reassoc_same_bss_optim=%d\n",
1485                         config->reassoc_same_bss_optim);
1486
1487         if (config->wps_priority)
1488                 fprintf(f, "wps_priority=%d\n", config->wps_priority);
1489
1490         if (config->wpa_rsc_relaxation != DEFAULT_WPA_RSC_RELAXATION)
1491                 fprintf(f, "wpa_rsc_relaxation=%d\n",
1492                         config->wpa_rsc_relaxation);
1493
1494         if (config->sched_scan_plans)
1495                 fprintf(f, "sched_scan_plans=%s\n", config->sched_scan_plans);
1496
1497 #ifdef CONFIG_MBO
1498         if (config->non_pref_chan)
1499                 fprintf(f, "non_pref_chan=%s\n", config->non_pref_chan);
1500         if (config->mbo_cell_capa != DEFAULT_MBO_CELL_CAPA)
1501                 fprintf(f, "mbo_cell_capa=%u\n", config->mbo_cell_capa);
1502         if (config->disassoc_imminent_rssi_threshold !=
1503             DEFAULT_DISASSOC_IMMINENT_RSSI_THRESHOLD)
1504                 fprintf(f, "disassoc_imminent_rssi_threshold=%d\n",
1505                         config->disassoc_imminent_rssi_threshold);
1506         if (config->oce != DEFAULT_OCE_SUPPORT)
1507                 fprintf(f, "oce=%u\n", config->oce);
1508 #endif /* CONFIG_MBO */
1509
1510         if (config->gas_address3)
1511                 fprintf(f, "gas_address3=%d\n", config->gas_address3);
1512
1513         if (config->ftm_responder)
1514                 fprintf(f, "ftm_responder=%d\n", config->ftm_responder);
1515         if (config->ftm_initiator)
1516                 fprintf(f, "ftm_initiator=%d\n", config->ftm_initiator);
1517
1518         if (config->osu_dir)
1519                 fprintf(f, "osu_dir=%s\n", config->osu_dir);
1520
1521         if (config->fst_group_id)
1522                 fprintf(f, "fst_group_id=%s\n", config->fst_group_id);
1523         if (config->fst_priority)
1524                 fprintf(f, "fst_priority=%d\n", config->fst_priority);
1525         if (config->fst_llt)
1526                 fprintf(f, "fst_llt=%d\n", config->fst_llt);
1527
1528         if (config->gas_rand_addr_lifetime != DEFAULT_RAND_ADDR_LIFETIME)
1529                 fprintf(f, "gas_rand_addr_lifetime=%u\n",
1530                         config->gas_rand_addr_lifetime);
1531         if (config->gas_rand_mac_addr)
1532                 fprintf(f, "gas_rand_mac_addr=%d\n", config->gas_rand_mac_addr);
1533         if (config->dpp_config_processing)
1534                 fprintf(f, "dpp_config_processing=%d\n",
1535                         config->dpp_config_processing);
1536         if (config->coloc_intf_reporting)
1537                 fprintf(f, "coloc_intf_reporting=%d\n",
1538                         config->coloc_intf_reporting);
1539         if (config->p2p_device_random_mac_addr)
1540                 fprintf(f, "p2p_device_random_mac_addr=%d\n",
1541                         config->p2p_device_random_mac_addr);
1542         if (!is_zero_ether_addr(config->p2p_device_persistent_mac_addr))
1543                 fprintf(f, "p2p_device_persistent_mac_addr=" MACSTR "\n",
1544                         MAC2STR(config->p2p_device_persistent_mac_addr));
1545         if (config->p2p_interface_random_mac_addr)
1546                 fprintf(f, "p2p_interface_random_mac_addr=%d\n",
1547                         config->p2p_interface_random_mac_addr);
1548         if (config->disable_btm)
1549                 fprintf(f, "disable_btm=1\n");
1550 }
1551
1552 #endif /* CONFIG_NO_CONFIG_WRITE */
1553
1554
1555 int wpa_config_write(const char *name, struct wpa_config *config)
1556 {
1557 #ifndef CONFIG_NO_CONFIG_WRITE
1558         FILE *f;
1559         struct wpa_ssid *ssid;
1560         struct wpa_cred *cred;
1561 #ifndef CONFIG_NO_CONFIG_BLOBS
1562         struct wpa_config_blob *blob;
1563 #endif /* CONFIG_NO_CONFIG_BLOBS */
1564         int ret = 0;
1565         const char *orig_name = name;
1566         int tmp_len = os_strlen(name) + 5; /* allow space for .tmp suffix */
1567         char *tmp_name = os_malloc(tmp_len);
1568
1569         if (tmp_name) {
1570                 os_snprintf(tmp_name, tmp_len, "%s.tmp", name);
1571                 name = tmp_name;
1572         }
1573
1574         wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
1575
1576         f = fopen(name, "w");
1577         if (f == NULL) {
1578                 wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", name);
1579                 os_free(tmp_name);
1580                 return -1;
1581         }
1582
1583         wpa_config_write_global(f, config);
1584
1585         for (cred = config->cred; cred; cred = cred->next) {
1586                 if (cred->temporary)
1587                         continue;
1588                 fprintf(f, "\ncred={\n");
1589                 wpa_config_write_cred(f, cred);
1590                 fprintf(f, "}\n");
1591         }
1592
1593         for (ssid = config->ssid; ssid; ssid = ssid->next) {
1594                 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS || ssid->temporary)
1595                         continue; /* do not save temporary networks */
1596                 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set &&
1597                     !ssid->passphrase)
1598                         continue; /* do not save invalid network */
1599                 fprintf(f, "\nnetwork={\n");
1600                 wpa_config_write_network(f, ssid);
1601                 fprintf(f, "}\n");
1602         }
1603
1604 #ifndef CONFIG_NO_CONFIG_BLOBS
1605         for (blob = config->blobs; blob; blob = blob->next) {
1606                 ret = wpa_config_write_blob(f, blob);
1607                 if (ret)
1608                         break;
1609         }
1610 #endif /* CONFIG_NO_CONFIG_BLOBS */
1611
1612         os_fdatasync(f);
1613
1614         fclose(f);
1615
1616         if (tmp_name) {
1617                 int chmod_ret = 0;
1618
1619 #ifdef ANDROID
1620                 chmod_ret = chmod(tmp_name,
1621                                   S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
1622 #endif /* ANDROID */
1623                 if (chmod_ret != 0 || rename(tmp_name, orig_name) != 0)
1624                         ret = -1;
1625
1626                 os_free(tmp_name);
1627         }
1628
1629         wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully",
1630                    orig_name, ret ? "un" : "");
1631         return ret;
1632 #else /* CONFIG_NO_CONFIG_WRITE */
1633         return -1;
1634 #endif /* CONFIG_NO_CONFIG_WRITE */
1635 }