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 15 #include "common.h" 16 #include "config.h" 17 #include "base64.h" 18 #include "uuid.h" 19 #include "p2p/p2p.h" 20 #include "eap_peer/eap_methods.h" 21 #include "eap_peer/eap.h" 22 23 24 static int newline_terminated(const char *buf, size_t buflen) 25 { 26 size_t len = os_strlen(buf); 27 if (len == 0) 28 return 0; 29 if (len == buflen - 1 && buf[buflen - 1] != '\r' && 30 buf[len - 1] != '\n') 31 return 0; 32 return 1; 33 } 34 35 36 static void skip_line_end(FILE *stream) 37 { 38 char buf[100]; 39 while (fgets(buf, sizeof(buf), stream)) { 40 buf[sizeof(buf) - 1] = '\0'; 41 if (newline_terminated(buf, sizeof(buf))) 42 return; 43 } 44 } 45 46 47 /** 48 * wpa_config_get_line - Read the next configuration file line 49 * @s: Buffer for the line 50 * @size: The buffer length 51 * @stream: File stream to read from 52 * @line: Pointer to a variable storing the file line number 53 * @_pos: Buffer for the pointer to the beginning of data on the text line or 54 * %NULL if not needed (returned value used instead) 55 * Returns: Pointer to the beginning of data on the text line or %NULL if no 56 * more text lines are available. 57 * 58 * This function reads the next non-empty line from the configuration file and 59 * removes comments. The returned string is guaranteed to be null-terminated. 60 */ 61 static char * wpa_config_get_line(char *s, int size, FILE *stream, int *line, 62 char **_pos) 63 { 64 char *pos, *end, *sstart; 65 66 while (fgets(s, size, stream)) { 67 (*line)++; 68 s[size - 1] = '\0'; 69 if (!newline_terminated(s, size)) { 70 /* 71 * The line was truncated - skip rest of it to avoid 72 * confusing error messages. 73 */ 74 wpa_printf(MSG_INFO, "Long line in configuration file " 75 "truncated"); 76 skip_line_end(stream); 77 } 78 pos = s; 79 80 /* Skip white space from the beginning of line. */ 81 while (*pos == ' ' || *pos == '\t' || *pos == '\r') 82 pos++; 83 84 /* Skip comment lines and empty lines */ 85 if (*pos == '#' || *pos == '\n' || *pos == '\0') 86 continue; 87 88 /* 89 * Remove # comments unless they are within a double quoted 90 * string. 91 */ 92 sstart = os_strchr(pos, '"'); 93 if (sstart) 94 sstart = os_strrchr(sstart + 1, '"'); 95 if (!sstart) 96 sstart = pos; 97 end = os_strchr(sstart, '#'); 98 if (end) 99 *end-- = '\0'; 100 else 101 end = pos + os_strlen(pos) - 1; 102 103 /* Remove trailing white space. */ 104 while (end > pos && 105 (*end == '\n' || *end == ' ' || *end == '\t' || 106 *end == '\r')) 107 *end-- = '\0'; 108 109 if (*pos == '\0') 110 continue; 111 112 if (_pos) 113 *_pos = pos; 114 return pos; 115 } 116 117 if (_pos) 118 *_pos = NULL; 119 return NULL; 120 } 121 122 123 static int wpa_config_validate_network(struct wpa_ssid *ssid, int line) 124 { 125 int errors = 0; 126 127 if (ssid->passphrase) { 128 if (ssid->psk_set) { 129 wpa_printf(MSG_ERROR, "Line %d: both PSK and " 130 "passphrase configured.", line); 131 errors++; 132 } 133 wpa_config_update_psk(ssid); 134 } 135 136 if ((ssid->group_cipher & WPA_CIPHER_CCMP) && 137 !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) && 138 !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) { 139 /* Group cipher cannot be stronger than the pairwise cipher. */ 140 wpa_printf(MSG_DEBUG, "Line %d: removed CCMP from group cipher" 141 " list since it was not allowed for pairwise " 142 "cipher", line); 143 ssid->group_cipher &= ~WPA_CIPHER_CCMP; 144 } 145 146 return errors; 147 } 148 149 150 static struct wpa_ssid * wpa_config_read_network(FILE *f, int *line, int id) 151 { 152 struct wpa_ssid *ssid; 153 int errors = 0, end = 0; 154 char buf[2000], *pos, *pos2; 155 156 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new network block", 157 *line); 158 ssid = os_zalloc(sizeof(*ssid)); 159 if (ssid == NULL) 160 return NULL; 161 dl_list_init(&ssid->psk_list); 162 ssid->id = id; 163 164 wpa_config_set_network_defaults(ssid); 165 166 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) { 167 if (os_strcmp(pos, "}") == 0) { 168 end = 1; 169 break; 170 } 171 172 pos2 = os_strchr(pos, '='); 173 if (pos2 == NULL) { 174 wpa_printf(MSG_ERROR, "Line %d: Invalid SSID line " 175 "'%s'.", *line, pos); 176 errors++; 177 continue; 178 } 179 180 *pos2++ = '\0'; 181 if (*pos2 == '"') { 182 if (os_strchr(pos2 + 1, '"') == NULL) { 183 wpa_printf(MSG_ERROR, "Line %d: invalid " 184 "quotation '%s'.", *line, pos2); 185 errors++; 186 continue; 187 } 188 } 189 190 if (wpa_config_set(ssid, pos, pos2, *line) < 0) 191 errors++; 192 } 193 194 if (!end) { 195 wpa_printf(MSG_ERROR, "Line %d: network block was not " 196 "terminated properly.", *line); 197 errors++; 198 } 199 200 errors += wpa_config_validate_network(ssid, *line); 201 202 if (errors) { 203 wpa_config_free_ssid(ssid); 204 ssid = NULL; 205 } 206 207 return ssid; 208 } 209 210 211 static struct wpa_cred * wpa_config_read_cred(FILE *f, int *line, int id) 212 { 213 struct wpa_cred *cred; 214 int errors = 0, end = 0; 215 char buf[256], *pos, *pos2; 216 217 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new cred block", *line); 218 cred = os_zalloc(sizeof(*cred)); 219 if (cred == NULL) 220 return NULL; 221 cred->id = id; 222 223 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) { 224 if (os_strcmp(pos, "}") == 0) { 225 end = 1; 226 break; 227 } 228 229 pos2 = os_strchr(pos, '='); 230 if (pos2 == NULL) { 231 wpa_printf(MSG_ERROR, "Line %d: Invalid cred line " 232 "'%s'.", *line, pos); 233 errors++; 234 continue; 235 } 236 237 *pos2++ = '\0'; 238 if (*pos2 == '"') { 239 if (os_strchr(pos2 + 1, '"') == NULL) { 240 wpa_printf(MSG_ERROR, "Line %d: invalid " 241 "quotation '%s'.", *line, pos2); 242 errors++; 243 continue; 244 } 245 } 246 247 if (wpa_config_set_cred(cred, pos, pos2, *line) < 0) 248 errors++; 249 } 250 251 if (!end) { 252 wpa_printf(MSG_ERROR, "Line %d: cred block was not " 253 "terminated properly.", *line); 254 errors++; 255 } 256 257 if (errors) { 258 wpa_config_free_cred(cred); 259 cred = NULL; 260 } 261 262 return cred; 263 } 264 265 266 #ifndef CONFIG_NO_CONFIG_BLOBS 267 static struct wpa_config_blob * wpa_config_read_blob(FILE *f, int *line, 268 const char *name) 269 { 270 struct wpa_config_blob *blob; 271 char buf[256], *pos; 272 unsigned char *encoded = NULL, *nencoded; 273 int end = 0; 274 size_t encoded_len = 0, len; 275 276 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new named blob '%s'", 277 *line, name); 278 279 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) { 280 if (os_strcmp(pos, "}") == 0) { 281 end = 1; 282 break; 283 } 284 285 len = os_strlen(pos); 286 nencoded = os_realloc(encoded, encoded_len + len); 287 if (nencoded == NULL) { 288 wpa_printf(MSG_ERROR, "Line %d: not enough memory for " 289 "blob", *line); 290 os_free(encoded); 291 return NULL; 292 } 293 encoded = nencoded; 294 os_memcpy(encoded + encoded_len, pos, len); 295 encoded_len += len; 296 } 297 298 if (!end) { 299 wpa_printf(MSG_ERROR, "Line %d: blob was not terminated " 300 "properly", *line); 301 os_free(encoded); 302 return NULL; 303 } 304 305 blob = os_zalloc(sizeof(*blob)); 306 if (blob == NULL) { 307 os_free(encoded); 308 return NULL; 309 } 310 blob->name = os_strdup(name); 311 blob->data = base64_decode(encoded, encoded_len, &blob->len); 312 os_free(encoded); 313 314 if (blob->name == NULL || blob->data == NULL) { 315 wpa_config_free_blob(blob); 316 return NULL; 317 } 318 319 return blob; 320 } 321 322 323 static int wpa_config_process_blob(struct wpa_config *config, FILE *f, 324 int *line, char *bname) 325 { 326 char *name_end; 327 struct wpa_config_blob *blob; 328 329 name_end = os_strchr(bname, '='); 330 if (name_end == NULL) { 331 wpa_printf(MSG_ERROR, "Line %d: no blob name terminator", 332 *line); 333 return -1; 334 } 335 *name_end = '\0'; 336 337 blob = wpa_config_read_blob(f, line, bname); 338 if (blob == NULL) { 339 wpa_printf(MSG_ERROR, "Line %d: failed to read blob %s", 340 *line, bname); 341 return -1; 342 } 343 wpa_config_set_blob(config, blob); 344 return 0; 345 } 346 #endif /* CONFIG_NO_CONFIG_BLOBS */ 347 348 349 struct wpa_config * wpa_config_read(const char *name, struct wpa_config *cfgp) 350 { 351 FILE *f; 352 char buf[512], *pos; 353 int errors = 0, line = 0; 354 struct wpa_ssid *ssid, *tail = NULL, *head = NULL; 355 struct wpa_cred *cred, *cred_tail = NULL, *cred_head = NULL; 356 struct wpa_config *config; 357 int id = 0; 358 int cred_id = 0; 359 360 if (name == NULL) 361 return NULL; 362 if (cfgp) 363 config = cfgp; 364 else 365 config = wpa_config_alloc_empty(NULL, NULL); 366 if (config == NULL) { 367 wpa_printf(MSG_ERROR, "Failed to allocate config file " 368 "structure"); 369 return NULL; 370 } 371 head = config->ssid; 372 cred_head = config->cred; 373 374 wpa_printf(MSG_DEBUG, "Reading configuration file '%s'", name); 375 f = fopen(name, "r"); 376 if (f == NULL) { 377 wpa_printf(MSG_ERROR, "Failed to open config file '%s', " 378 "error: %s", name, strerror(errno)); 379 os_free(config); 380 return NULL; 381 } 382 383 while (wpa_config_get_line(buf, sizeof(buf), f, &line, &pos)) { 384 if (os_strcmp(pos, "network={") == 0) { 385 ssid = wpa_config_read_network(f, &line, id++); 386 if (ssid == NULL) { 387 wpa_printf(MSG_ERROR, "Line %d: failed to " 388 "parse network block.", line); 389 errors++; 390 continue; 391 } 392 if (head == NULL) { 393 head = tail = ssid; 394 } else { 395 tail->next = ssid; 396 tail = ssid; 397 } 398 if (wpa_config_add_prio_network(config, ssid)) { 399 wpa_printf(MSG_ERROR, "Line %d: failed to add " 400 "network block to priority list.", 401 line); 402 errors++; 403 continue; 404 } 405 } else if (os_strcmp(pos, "cred={") == 0) { 406 cred = wpa_config_read_cred(f, &line, cred_id++); 407 if (cred == NULL) { 408 wpa_printf(MSG_ERROR, "Line %d: failed to " 409 "parse cred block.", line); 410 errors++; 411 continue; 412 } 413 if (cred_head == NULL) { 414 cred_head = cred_tail = cred; 415 } else { 416 cred_tail->next = cred; 417 cred_tail = cred; 418 } 419 #ifndef CONFIG_NO_CONFIG_BLOBS 420 } else if (os_strncmp(pos, "blob-base64-", 12) == 0) { 421 if (wpa_config_process_blob(config, f, &line, pos + 12) 422 < 0) { 423 wpa_printf(MSG_ERROR, "Line %d: failed to " 424 "process blob.", line); 425 errors++; 426 continue; 427 } 428 #endif /* CONFIG_NO_CONFIG_BLOBS */ 429 } else if (wpa_config_process_global(config, pos, line) < 0) { 430 wpa_printf(MSG_ERROR, "Line %d: Invalid configuration " 431 "line '%s'.", line, pos); 432 errors++; 433 continue; 434 } 435 } 436 437 fclose(f); 438 439 config->ssid = head; 440 wpa_config_debug_dump_networks(config); 441 config->cred = cred_head; 442 443 #ifndef WPA_IGNORE_CONFIG_ERRORS 444 if (errors) { 445 wpa_config_free(config); 446 config = NULL; 447 head = NULL; 448 } 449 #endif /* WPA_IGNORE_CONFIG_ERRORS */ 450 451 return config; 452 } 453 454 455 #ifndef CONFIG_NO_CONFIG_WRITE 456 457 static void write_str(FILE *f, const char *field, struct wpa_ssid *ssid) 458 { 459 char *value = wpa_config_get(ssid, field); 460 if (value == NULL) 461 return; 462 fprintf(f, "\t%s=%s\n", field, value); 463 os_free(value); 464 } 465 466 467 static void write_int(FILE *f, const char *field, int value, int def) 468 { 469 if (value == def) 470 return; 471 fprintf(f, "\t%s=%d\n", field, value); 472 } 473 474 475 static void write_bssid(FILE *f, struct wpa_ssid *ssid) 476 { 477 char *value = wpa_config_get(ssid, "bssid"); 478 if (value == NULL) 479 return; 480 fprintf(f, "\tbssid=%s\n", value); 481 os_free(value); 482 } 483 484 485 static void write_psk(FILE *f, struct wpa_ssid *ssid) 486 { 487 char *value = wpa_config_get(ssid, "psk"); 488 if (value == NULL) 489 return; 490 fprintf(f, "\tpsk=%s\n", value); 491 os_free(value); 492 } 493 494 495 static void write_proto(FILE *f, struct wpa_ssid *ssid) 496 { 497 char *value; 498 499 if (ssid->proto == DEFAULT_PROTO) 500 return; 501 502 value = wpa_config_get(ssid, "proto"); 503 if (value == NULL) 504 return; 505 if (value[0]) 506 fprintf(f, "\tproto=%s\n", value); 507 os_free(value); 508 } 509 510 511 static void write_key_mgmt(FILE *f, struct wpa_ssid *ssid) 512 { 513 char *value; 514 515 if (ssid->key_mgmt == DEFAULT_KEY_MGMT) 516 return; 517 518 value = wpa_config_get(ssid, "key_mgmt"); 519 if (value == NULL) 520 return; 521 if (value[0]) 522 fprintf(f, "\tkey_mgmt=%s\n", value); 523 os_free(value); 524 } 525 526 527 static void write_pairwise(FILE *f, struct wpa_ssid *ssid) 528 { 529 char *value; 530 531 if (ssid->pairwise_cipher == DEFAULT_PAIRWISE) 532 return; 533 534 value = wpa_config_get(ssid, "pairwise"); 535 if (value == NULL) 536 return; 537 if (value[0]) 538 fprintf(f, "\tpairwise=%s\n", value); 539 os_free(value); 540 } 541 542 543 static void write_group(FILE *f, struct wpa_ssid *ssid) 544 { 545 char *value; 546 547 if (ssid->group_cipher == DEFAULT_GROUP) 548 return; 549 550 value = wpa_config_get(ssid, "group"); 551 if (value == NULL) 552 return; 553 if (value[0]) 554 fprintf(f, "\tgroup=%s\n", value); 555 os_free(value); 556 } 557 558 559 static void write_auth_alg(FILE *f, struct wpa_ssid *ssid) 560 { 561 char *value; 562 563 if (ssid->auth_alg == 0) 564 return; 565 566 value = wpa_config_get(ssid, "auth_alg"); 567 if (value == NULL) 568 return; 569 if (value[0]) 570 fprintf(f, "\tauth_alg=%s\n", value); 571 os_free(value); 572 } 573 574 575 #ifdef IEEE8021X_EAPOL 576 static void write_eap(FILE *f, struct wpa_ssid *ssid) 577 { 578 char *value; 579 580 value = wpa_config_get(ssid, "eap"); 581 if (value == NULL) 582 return; 583 584 if (value[0]) 585 fprintf(f, "\teap=%s\n", value); 586 os_free(value); 587 } 588 #endif /* IEEE8021X_EAPOL */ 589 590 591 static void write_wep_key(FILE *f, int idx, struct wpa_ssid *ssid) 592 { 593 char field[20], *value; 594 int res; 595 596 res = os_snprintf(field, sizeof(field), "wep_key%d", idx); 597 if (res < 0 || (size_t) res >= sizeof(field)) 598 return; 599 value = wpa_config_get(ssid, field); 600 if (value) { 601 fprintf(f, "\t%s=%s\n", field, value); 602 os_free(value); 603 } 604 } 605 606 607 #ifdef CONFIG_P2P 608 609 static void write_go_p2p_dev_addr(FILE *f, struct wpa_ssid *ssid) 610 { 611 char *value = wpa_config_get(ssid, "go_p2p_dev_addr"); 612 if (value == NULL) 613 return; 614 fprintf(f, "\tgo_p2p_dev_addr=%s\n", value); 615 os_free(value); 616 } 617 618 static void write_p2p_client_list(FILE *f, struct wpa_ssid *ssid) 619 { 620 char *value = wpa_config_get(ssid, "p2p_client_list"); 621 if (value == NULL) 622 return; 623 fprintf(f, "\tp2p_client_list=%s\n", value); 624 os_free(value); 625 } 626 627 628 static void write_psk_list(FILE *f, struct wpa_ssid *ssid) 629 { 630 struct psk_list_entry *psk; 631 char hex[32 * 2 + 1]; 632 633 dl_list_for_each(psk, &ssid->psk_list, struct psk_list_entry, list) { 634 wpa_snprintf_hex(hex, sizeof(hex), psk->psk, sizeof(psk->psk)); 635 fprintf(f, "\tpsk_list=%s" MACSTR "-%s\n", 636 psk->p2p ? "P2P-" : "", MAC2STR(psk->addr), hex); 637 } 638 } 639 640 #endif /* CONFIG_P2P */ 641 642 643 static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid) 644 { 645 int i; 646 647 #define STR(t) write_str(f, #t, ssid) 648 #define INT(t) write_int(f, #t, ssid->t, 0) 649 #define INTe(t) write_int(f, #t, ssid->eap.t, 0) 650 #define INT_DEF(t, def) write_int(f, #t, ssid->t, def) 651 #define INT_DEFe(t, def) write_int(f, #t, ssid->eap.t, def) 652 653 STR(ssid); 654 INT(scan_ssid); 655 write_bssid(f, ssid); 656 write_psk(f, ssid); 657 write_proto(f, ssid); 658 write_key_mgmt(f, ssid); 659 INT_DEF(bg_scan_period, DEFAULT_BG_SCAN_PERIOD); 660 write_pairwise(f, ssid); 661 write_group(f, ssid); 662 write_auth_alg(f, ssid); 663 STR(bgscan); 664 STR(autoscan); 665 STR(scan_freq); 666 #ifdef IEEE8021X_EAPOL 667 write_eap(f, ssid); 668 STR(identity); 669 STR(anonymous_identity); 670 STR(password); 671 STR(ca_cert); 672 STR(ca_path); 673 STR(client_cert); 674 STR(private_key); 675 STR(private_key_passwd); 676 STR(dh_file); 677 STR(subject_match); 678 STR(altsubject_match); 679 STR(domain_suffix_match); 680 STR(ca_cert2); 681 STR(ca_path2); 682 STR(client_cert2); 683 STR(private_key2); 684 STR(private_key2_passwd); 685 STR(dh_file2); 686 STR(subject_match2); 687 STR(altsubject_match2); 688 STR(domain_suffix_match2); 689 STR(phase1); 690 STR(phase2); 691 STR(pcsc); 692 STR(pin); 693 STR(engine_id); 694 STR(key_id); 695 STR(cert_id); 696 STR(ca_cert_id); 697 STR(key2_id); 698 STR(pin2); 699 STR(engine2_id); 700 STR(cert2_id); 701 STR(ca_cert2_id); 702 INTe(engine); 703 INTe(engine2); 704 INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS); 705 #endif /* IEEE8021X_EAPOL */ 706 for (i = 0; i < 4; i++) 707 write_wep_key(f, i, ssid); 708 INT(wep_tx_keyidx); 709 INT(priority); 710 #ifdef IEEE8021X_EAPOL 711 INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND); 712 STR(pac_file); 713 INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE); 714 #endif /* IEEE8021X_EAPOL */ 715 INT(mode); 716 INT(frequency); 717 write_int(f, "proactive_key_caching", ssid->proactive_key_caching, -1); 718 INT(disabled); 719 INT(peerkey); 720 #ifdef CONFIG_IEEE80211W 721 write_int(f, "ieee80211w", ssid->ieee80211w, 722 MGMT_FRAME_PROTECTION_DEFAULT); 723 #endif /* CONFIG_IEEE80211W */ 724 STR(id_str); 725 #ifdef CONFIG_P2P 726 write_go_p2p_dev_addr(f, ssid); 727 write_p2p_client_list(f, ssid); 728 write_psk_list(f, ssid); 729 #endif /* CONFIG_P2P */ 730 INT(dtim_period); 731 INT(beacon_int); 732 733 #undef STR 734 #undef INT 735 #undef INT_DEF 736 } 737 738 739 static void wpa_config_write_cred(FILE *f, struct wpa_cred *cred) 740 { 741 size_t i; 742 743 if (cred->priority) 744 fprintf(f, "\tpriority=%d\n", cred->priority); 745 if (cred->pcsc) 746 fprintf(f, "\tpcsc=%d\n", cred->pcsc); 747 if (cred->realm) 748 fprintf(f, "\trealm=\"%s\"\n", cred->realm); 749 if (cred->username) 750 fprintf(f, "\tusername=\"%s\"\n", cred->username); 751 if (cred->password && cred->ext_password) 752 fprintf(f, "\tpassword=ext:%s\n", cred->password); 753 else if (cred->password) 754 fprintf(f, "\tpassword=\"%s\"\n", cred->password); 755 if (cred->ca_cert) 756 fprintf(f, "\tca_cert=\"%s\"\n", cred->ca_cert); 757 if (cred->client_cert) 758 fprintf(f, "\tclient_cert=\"%s\"\n", cred->client_cert); 759 if (cred->private_key) 760 fprintf(f, "\tprivate_key=\"%s\"\n", cred->private_key); 761 if (cred->private_key_passwd) 762 fprintf(f, "\tprivate_key_passwd=\"%s\"\n", 763 cred->private_key_passwd); 764 if (cred->imsi) 765 fprintf(f, "\timsi=\"%s\"\n", cred->imsi); 766 if (cred->milenage) 767 fprintf(f, "\tmilenage=\"%s\"\n", cred->milenage); 768 for (i = 0; i < cred->num_domain; i++) 769 fprintf(f, "\tdomain=\"%s\"\n", cred->domain[i]); 770 if (cred->domain_suffix_match) 771 fprintf(f, "\tdomain_suffix_match=\"%s\"", 772 cred->domain_suffix_match); 773 if (cred->roaming_consortium_len) { 774 fprintf(f, "\troaming_consortium="); 775 for (i = 0; i < cred->roaming_consortium_len; i++) 776 fprintf(f, "%02x", cred->roaming_consortium[i]); 777 fprintf(f, "\n"); 778 } 779 if (cred->eap_method) { 780 const char *name; 781 name = eap_get_name(cred->eap_method[0].vendor, 782 cred->eap_method[0].method); 783 fprintf(f, "\teap=%s\n", name); 784 } 785 if (cred->phase1) 786 fprintf(f, "\tphase1=\"%s\"\n", cred->phase1); 787 if (cred->phase2) 788 fprintf(f, "\tphase2=\"%s\"\n", cred->phase2); 789 if (cred->excluded_ssid) { 790 size_t j; 791 for (i = 0; i < cred->num_excluded_ssid; i++) { 792 struct excluded_ssid *e = &cred->excluded_ssid[i]; 793 fprintf(f, "\texcluded_ssid="); 794 for (j = 0; j < e->ssid_len; j++) 795 fprintf(f, "%02x", e->ssid[j]); 796 fprintf(f, "\n"); 797 } 798 } 799 } 800 801 802 #ifndef CONFIG_NO_CONFIG_BLOBS 803 static int wpa_config_write_blob(FILE *f, struct wpa_config_blob *blob) 804 { 805 unsigned char *encoded; 806 807 encoded = base64_encode(blob->data, blob->len, NULL); 808 if (encoded == NULL) 809 return -1; 810 811 fprintf(f, "\nblob-base64-%s={\n%s}\n", blob->name, encoded); 812 os_free(encoded); 813 return 0; 814 } 815 #endif /* CONFIG_NO_CONFIG_BLOBS */ 816 817 818 static void write_global_bin(FILE *f, const char *field, 819 const struct wpabuf *val) 820 { 821 size_t i; 822 const u8 *pos; 823 824 if (val == NULL) 825 return; 826 827 fprintf(f, "%s=", field); 828 pos = wpabuf_head(val); 829 for (i = 0; i < wpabuf_len(val); i++) 830 fprintf(f, "%02X", *pos++); 831 fprintf(f, "\n"); 832 } 833 834 835 static void wpa_config_write_global(FILE *f, struct wpa_config *config) 836 { 837 #ifdef CONFIG_CTRL_IFACE 838 if (config->ctrl_interface) 839 fprintf(f, "ctrl_interface=%s\n", config->ctrl_interface); 840 if (config->ctrl_interface_group) 841 fprintf(f, "ctrl_interface_group=%s\n", 842 config->ctrl_interface_group); 843 #endif /* CONFIG_CTRL_IFACE */ 844 if (config->eapol_version != DEFAULT_EAPOL_VERSION) 845 fprintf(f, "eapol_version=%d\n", config->eapol_version); 846 if (config->ap_scan != DEFAULT_AP_SCAN) 847 fprintf(f, "ap_scan=%d\n", config->ap_scan); 848 if (config->disable_scan_offload) 849 fprintf(f, "disable_scan_offload=%d\n", 850 config->disable_scan_offload); 851 if (config->fast_reauth != DEFAULT_FAST_REAUTH) 852 fprintf(f, "fast_reauth=%d\n", config->fast_reauth); 853 if (config->opensc_engine_path) 854 fprintf(f, "opensc_engine_path=%s\n", 855 config->opensc_engine_path); 856 if (config->pkcs11_engine_path) 857 fprintf(f, "pkcs11_engine_path=%s\n", 858 config->pkcs11_engine_path); 859 if (config->pkcs11_module_path) 860 fprintf(f, "pkcs11_module_path=%s\n", 861 config->pkcs11_module_path); 862 if (config->pcsc_reader) 863 fprintf(f, "pcsc_reader=%s\n", config->pcsc_reader); 864 if (config->pcsc_pin) 865 fprintf(f, "pcsc_pin=%s\n", config->pcsc_pin); 866 if (config->driver_param) 867 fprintf(f, "driver_param=%s\n", config->driver_param); 868 if (config->dot11RSNAConfigPMKLifetime) 869 fprintf(f, "dot11RSNAConfigPMKLifetime=%d\n", 870 config->dot11RSNAConfigPMKLifetime); 871 if (config->dot11RSNAConfigPMKReauthThreshold) 872 fprintf(f, "dot11RSNAConfigPMKReauthThreshold=%d\n", 873 config->dot11RSNAConfigPMKReauthThreshold); 874 if (config->dot11RSNAConfigSATimeout) 875 fprintf(f, "dot11RSNAConfigSATimeout=%d\n", 876 config->dot11RSNAConfigSATimeout); 877 if (config->update_config) 878 fprintf(f, "update_config=%d\n", config->update_config); 879 #ifdef CONFIG_WPS 880 if (!is_nil_uuid(config->uuid)) { 881 char buf[40]; 882 uuid_bin2str(config->uuid, buf, sizeof(buf)); 883 fprintf(f, "uuid=%s\n", buf); 884 } 885 if (config->device_name) 886 fprintf(f, "device_name=%s\n", config->device_name); 887 if (config->manufacturer) 888 fprintf(f, "manufacturer=%s\n", config->manufacturer); 889 if (config->model_name) 890 fprintf(f, "model_name=%s\n", config->model_name); 891 if (config->model_number) 892 fprintf(f, "model_number=%s\n", config->model_number); 893 if (config->serial_number) 894 fprintf(f, "serial_number=%s\n", config->serial_number); 895 { 896 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf; 897 buf = wps_dev_type_bin2str(config->device_type, 898 _buf, sizeof(_buf)); 899 if (os_strcmp(buf, "0-00000000-0") != 0) 900 fprintf(f, "device_type=%s\n", buf); 901 } 902 if (WPA_GET_BE32(config->os_version)) 903 fprintf(f, "os_version=%08x\n", 904 WPA_GET_BE32(config->os_version)); 905 if (config->config_methods) 906 fprintf(f, "config_methods=%s\n", config->config_methods); 907 if (config->wps_cred_processing) 908 fprintf(f, "wps_cred_processing=%d\n", 909 config->wps_cred_processing); 910 if (config->wps_vendor_ext_m1) { 911 int i, len = wpabuf_len(config->wps_vendor_ext_m1); 912 const u8 *p = wpabuf_head_u8(config->wps_vendor_ext_m1); 913 if (len > 0) { 914 fprintf(f, "wps_vendor_ext_m1="); 915 for (i = 0; i < len; i++) 916 fprintf(f, "%02x", *p++); 917 fprintf(f, "\n"); 918 } 919 } 920 #endif /* CONFIG_WPS */ 921 #ifdef CONFIG_P2P 922 if (config->p2p_listen_reg_class) 923 fprintf(f, "p2p_listen_reg_class=%u\n", 924 config->p2p_listen_reg_class); 925 if (config->p2p_listen_channel) 926 fprintf(f, "p2p_listen_channel=%u\n", 927 config->p2p_listen_channel); 928 if (config->p2p_oper_reg_class) 929 fprintf(f, "p2p_oper_reg_class=%u\n", 930 config->p2p_oper_reg_class); 931 if (config->p2p_oper_channel) 932 fprintf(f, "p2p_oper_channel=%u\n", config->p2p_oper_channel); 933 if (config->p2p_go_intent != DEFAULT_P2P_GO_INTENT) 934 fprintf(f, "p2p_go_intent=%u\n", config->p2p_go_intent); 935 if (config->p2p_ssid_postfix) 936 fprintf(f, "p2p_ssid_postfix=%s\n", config->p2p_ssid_postfix); 937 if (config->persistent_reconnect) 938 fprintf(f, "persistent_reconnect=%u\n", 939 config->persistent_reconnect); 940 if (config->p2p_intra_bss != DEFAULT_P2P_INTRA_BSS) 941 fprintf(f, "p2p_intra_bss=%u\n", config->p2p_intra_bss); 942 if (config->p2p_group_idle) 943 fprintf(f, "p2p_group_idle=%u\n", config->p2p_group_idle); 944 if (config->p2p_pref_chan) { 945 unsigned int i; 946 fprintf(f, "p2p_pref_chan="); 947 for (i = 0; i < config->num_p2p_pref_chan; i++) { 948 fprintf(f, "%s%u:%u", i > 0 ? "," : "", 949 config->p2p_pref_chan[i].op_class, 950 config->p2p_pref_chan[i].chan); 951 } 952 fprintf(f, "\n"); 953 } 954 if (config->p2p_no_go_freq.num) { 955 char *val = freq_range_list_str(&config->p2p_no_go_freq); 956 if (val) { 957 fprintf(f, "p2p_no_go_freq=%s\n", val); 958 os_free(val); 959 } 960 } 961 if (config->p2p_add_cli_chan) 962 fprintf(f, "p2p_add_cli_chan=%d\n", config->p2p_add_cli_chan); 963 if (config->p2p_go_ht40) 964 fprintf(f, "p2p_go_ht40=%u\n", config->p2p_go_ht40); 965 if (config->p2p_go_vht) 966 fprintf(f, "p2p_go_vht=%u\n", config->p2p_go_vht); 967 if (config->p2p_disabled) 968 fprintf(f, "p2p_disabled=%u\n", config->p2p_disabled); 969 if (config->p2p_no_group_iface) 970 fprintf(f, "p2p_no_group_iface=%u\n", 971 config->p2p_no_group_iface); 972 if (config->p2p_ignore_shared_freq) 973 fprintf(f, "p2p_ignore_shared_freq=%u\n", 974 config->p2p_ignore_shared_freq); 975 #endif /* CONFIG_P2P */ 976 if (config->country[0] && config->country[1]) { 977 fprintf(f, "country=%c%c\n", 978 config->country[0], config->country[1]); 979 } 980 if (config->bss_max_count != DEFAULT_BSS_MAX_COUNT) 981 fprintf(f, "bss_max_count=%u\n", config->bss_max_count); 982 if (config->bss_expiration_age != DEFAULT_BSS_EXPIRATION_AGE) 983 fprintf(f, "bss_expiration_age=%u\n", 984 config->bss_expiration_age); 985 if (config->bss_expiration_scan_count != 986 DEFAULT_BSS_EXPIRATION_SCAN_COUNT) 987 fprintf(f, "bss_expiration_scan_count=%u\n", 988 config->bss_expiration_scan_count); 989 if (config->filter_ssids) 990 fprintf(f, "filter_ssids=%d\n", config->filter_ssids); 991 if (config->max_num_sta != DEFAULT_MAX_NUM_STA) 992 fprintf(f, "max_num_sta=%u\n", config->max_num_sta); 993 if (config->disassoc_low_ack) 994 fprintf(f, "disassoc_low_ack=%u\n", config->disassoc_low_ack); 995 #ifdef CONFIG_HS20 996 if (config->hs20) 997 fprintf(f, "hs20=1\n"); 998 #endif /* CONFIG_HS20 */ 999 #ifdef CONFIG_INTERWORKING 1000 if (config->interworking) 1001 fprintf(f, "interworking=%u\n", config->interworking); 1002 if (!is_zero_ether_addr(config->hessid)) 1003 fprintf(f, "hessid=" MACSTR "\n", MAC2STR(config->hessid)); 1004 if (config->access_network_type != DEFAULT_ACCESS_NETWORK_TYPE) 1005 fprintf(f, "access_network_type=%d\n", 1006 config->access_network_type); 1007 #endif /* CONFIG_INTERWORKING */ 1008 if (config->pbc_in_m1) 1009 fprintf(f, "pbc_in_m1=%u\n", config->pbc_in_m1); 1010 if (config->wps_nfc_pw_from_config) { 1011 if (config->wps_nfc_dev_pw_id) 1012 fprintf(f, "wps_nfc_dev_pw_id=%d\n", 1013 config->wps_nfc_dev_pw_id); 1014 write_global_bin(f, "wps_nfc_dh_pubkey", 1015 config->wps_nfc_dh_pubkey); 1016 write_global_bin(f, "wps_nfc_dh_privkey", 1017 config->wps_nfc_dh_privkey); 1018 write_global_bin(f, "wps_nfc_dev_pw", config->wps_nfc_dev_pw); 1019 } 1020 1021 if (config->ext_password_backend) 1022 fprintf(f, "ext_password_backend=%s\n", 1023 config->ext_password_backend); 1024 if (config->p2p_go_max_inactivity != DEFAULT_P2P_GO_MAX_INACTIVITY) 1025 fprintf(f, "p2p_go_max_inactivity=%d\n", 1026 config->p2p_go_max_inactivity); 1027 if (config->auto_interworking) 1028 fprintf(f, "auto_interworking=%d\n", 1029 config->auto_interworking); 1030 if (config->okc) 1031 fprintf(f, "okc=%d\n", config->okc); 1032 if (config->pmf) 1033 fprintf(f, "pmf=%d\n", config->pmf); 1034 if (config->dtim_period) 1035 fprintf(f, "dtim_period=%d\n", config->dtim_period); 1036 if (config->beacon_int) 1037 fprintf(f, "beacon_int=%d\n", config->beacon_int); 1038 1039 if (config->sae_groups) { 1040 int i; 1041 fprintf(f, "sae_groups="); 1042 for (i = 0; config->sae_groups[i] >= 0; i++) { 1043 fprintf(f, "%s%d", i > 0 ? " " : "", 1044 config->sae_groups[i]); 1045 } 1046 fprintf(f, "\n"); 1047 } 1048 1049 if (config->ap_vendor_elements) { 1050 int i, len = wpabuf_len(config->ap_vendor_elements); 1051 const u8 *p = wpabuf_head_u8(config->ap_vendor_elements); 1052 if (len > 0) { 1053 fprintf(f, "ap_vendor_elements="); 1054 for (i = 0; i < len; i++) 1055 fprintf(f, "%02x", *p++); 1056 fprintf(f, "\n"); 1057 } 1058 } 1059 1060 if (config->ignore_old_scan_res) 1061 fprintf(f, "ignore_old_scan_res=%d\n", 1062 config->ignore_old_scan_res); 1063 1064 if (config->freq_list && config->freq_list[0]) { 1065 int i; 1066 fprintf(f, "freq_list="); 1067 for (i = 0; config->freq_list[i]; i++) { 1068 fprintf(f, "%s%u", i > 0 ? " " : "", 1069 config->freq_list[i]); 1070 } 1071 fprintf(f, "\n"); 1072 } 1073 if (config->scan_cur_freq != DEFAULT_SCAN_CUR_FREQ) 1074 fprintf(f, "scan_cur_freq=%d\n", config->scan_cur_freq); 1075 1076 if (config->sched_scan_interval) 1077 fprintf(f, "sched_scan_interval=%u\n", 1078 config->sched_scan_interval); 1079 1080 if (config->external_sim) 1081 fprintf(f, "external_sim=%d\n", config->external_sim); 1082 1083 if (config->tdls_external_control) 1084 fprintf(f, "tdls_external_control=%d\n", 1085 config->tdls_external_control); 1086 } 1087 1088 #endif /* CONFIG_NO_CONFIG_WRITE */ 1089 1090 1091 int wpa_config_write(const char *name, struct wpa_config *config) 1092 { 1093 #ifndef CONFIG_NO_CONFIG_WRITE 1094 FILE *f; 1095 struct wpa_ssid *ssid; 1096 struct wpa_cred *cred; 1097 #ifndef CONFIG_NO_CONFIG_BLOBS 1098 struct wpa_config_blob *blob; 1099 #endif /* CONFIG_NO_CONFIG_BLOBS */ 1100 int ret = 0; 1101 1102 wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name); 1103 1104 f = fopen(name, "w"); 1105 if (f == NULL) { 1106 wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", name); 1107 return -1; 1108 } 1109 1110 wpa_config_write_global(f, config); 1111 1112 for (cred = config->cred; cred; cred = cred->next) { 1113 if (cred->temporary) 1114 continue; 1115 fprintf(f, "\ncred={\n"); 1116 wpa_config_write_cred(f, cred); 1117 fprintf(f, "}\n"); 1118 } 1119 1120 for (ssid = config->ssid; ssid; ssid = ssid->next) { 1121 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS || ssid->temporary) 1122 continue; /* do not save temporary networks */ 1123 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set && 1124 !ssid->passphrase) 1125 continue; /* do not save invalid network */ 1126 fprintf(f, "\nnetwork={\n"); 1127 wpa_config_write_network(f, ssid); 1128 fprintf(f, "}\n"); 1129 } 1130 1131 #ifndef CONFIG_NO_CONFIG_BLOBS 1132 for (blob = config->blobs; blob; blob = blob->next) { 1133 ret = wpa_config_write_blob(f, blob); 1134 if (ret) 1135 break; 1136 } 1137 #endif /* CONFIG_NO_CONFIG_BLOBS */ 1138 1139 fclose(f); 1140 1141 wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully", 1142 name, ret ? "un" : ""); 1143 return ret; 1144 #else /* CONFIG_NO_CONFIG_WRITE */ 1145 return -1; 1146 #endif /* CONFIG_NO_CONFIG_WRITE */ 1147 } 1148