1 /* 2 * WPA Supplicant / Configuration backend: text file 3 * Copyright (c) 2003-2012, Jouni Malinen <j (at) 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_p2p_client_list(FILE *f, struct wpa_ssid *ssid) 610 { 611 char *value = wpa_config_get(ssid, "p2p_client_list"); 612 if (value == NULL) 613 return; 614 fprintf(f, "\tp2p_client_list=%s\n", value); 615 os_free(value); 616 } 617 618 619 static void write_psk_list(FILE *f, struct wpa_ssid *ssid) 620 { 621 struct psk_list_entry *psk; 622 char hex[32 * 2 + 1]; 623 624 dl_list_for_each(psk, &ssid->psk_list, struct psk_list_entry, list) { 625 wpa_snprintf_hex(hex, sizeof(hex), psk->psk, sizeof(psk->psk)); 626 fprintf(f, "\tpsk_list=%s" MACSTR "-%s\n", 627 psk->p2p ? "P2P-" : "", MAC2STR(psk->addr), hex); 628 } 629 } 630 631 #endif /* CONFIG_P2P */ 632 633 634 static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid) 635 { 636 int i; 637 638 #define STR(t) write_str(f, #t, ssid) 639 #define INT(t) write_int(f, #t, ssid->t, 0) 640 #define INTe(t) write_int(f, #t, ssid->eap.t, 0) 641 #define INT_DEF(t, def) write_int(f, #t, ssid->t, def) 642 #define INT_DEFe(t, def) write_int(f, #t, ssid->eap.t, def) 643 644 STR(ssid); 645 INT(scan_ssid); 646 write_bssid(f, ssid); 647 write_psk(f, ssid); 648 write_proto(f, ssid); 649 write_key_mgmt(f, ssid); 650 INT_DEF(bg_scan_period, DEFAULT_BG_SCAN_PERIOD); 651 write_pairwise(f, ssid); 652 write_group(f, ssid); 653 write_auth_alg(f, ssid); 654 STR(bgscan); 655 STR(autoscan); 656 #ifdef IEEE8021X_EAPOL 657 write_eap(f, ssid); 658 STR(identity); 659 STR(anonymous_identity); 660 STR(password); 661 STR(ca_cert); 662 STR(ca_path); 663 STR(client_cert); 664 STR(private_key); 665 STR(private_key_passwd); 666 STR(dh_file); 667 STR(subject_match); 668 STR(altsubject_match); 669 STR(ca_cert2); 670 STR(ca_path2); 671 STR(client_cert2); 672 STR(private_key2); 673 STR(private_key2_passwd); 674 STR(dh_file2); 675 STR(subject_match2); 676 STR(altsubject_match2); 677 STR(phase1); 678 STR(phase2); 679 STR(pcsc); 680 STR(pin); 681 STR(engine_id); 682 STR(key_id); 683 STR(cert_id); 684 STR(ca_cert_id); 685 STR(key2_id); 686 STR(pin2); 687 STR(engine2_id); 688 STR(cert2_id); 689 STR(ca_cert2_id); 690 INTe(engine); 691 INTe(engine2); 692 INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS); 693 #endif /* IEEE8021X_EAPOL */ 694 for (i = 0; i < 4; i++) 695 write_wep_key(f, i, ssid); 696 INT(wep_tx_keyidx); 697 INT(priority); 698 #ifdef IEEE8021X_EAPOL 699 INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND); 700 STR(pac_file); 701 INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE); 702 #endif /* IEEE8021X_EAPOL */ 703 INT(mode); 704 INT(frequency); 705 write_int(f, "proactive_key_caching", ssid->proactive_key_caching, -1); 706 INT(disabled); 707 INT(peerkey); 708 #ifdef CONFIG_IEEE80211W 709 write_int(f, "ieee80211w", ssid->ieee80211w, 710 MGMT_FRAME_PROTECTION_DEFAULT); 711 #endif /* CONFIG_IEEE80211W */ 712 STR(id_str); 713 #ifdef CONFIG_P2P 714 write_p2p_client_list(f, ssid); 715 write_psk_list(f, ssid); 716 #endif /* CONFIG_P2P */ 717 INT(dtim_period); 718 INT(beacon_int); 719 720 #undef STR 721 #undef INT 722 #undef INT_DEF 723 } 724 725 726 static void wpa_config_write_cred(FILE *f, struct wpa_cred *cred) 727 { 728 if (cred->priority) 729 fprintf(f, "\tpriority=%d\n", cred->priority); 730 if (cred->pcsc) 731 fprintf(f, "\tpcsc=%d\n", cred->pcsc); 732 if (cred->realm) 733 fprintf(f, "\trealm=\"%s\"\n", cred->realm); 734 if (cred->username) 735 fprintf(f, "\tusername=\"%s\"\n", cred->username); 736 if (cred->password && cred->ext_password) 737 fprintf(f, "\tpassword=ext:%s\n", cred->password); 738 else if (cred->password) 739 fprintf(f, "\tpassword=\"%s\"\n", cred->password); 740 if (cred->ca_cert) 741 fprintf(f, "\tca_cert=\"%s\"\n", cred->ca_cert); 742 if (cred->client_cert) 743 fprintf(f, "\tclient_cert=\"%s\"\n", cred->client_cert); 744 if (cred->private_key) 745 fprintf(f, "\tprivate_key=\"%s\"\n", cred->private_key); 746 if (cred->private_key_passwd) 747 fprintf(f, "\tprivate_key_passwd=\"%s\"\n", 748 cred->private_key_passwd); 749 if (cred->imsi) 750 fprintf(f, "\timsi=\"%s\"\n", cred->imsi); 751 if (cred->milenage) 752 fprintf(f, "\tmilenage=\"%s\"\n", cred->milenage); 753 if (cred->domain) 754 fprintf(f, "\tdomain=\"%s\"\n", cred->domain); 755 if (cred->roaming_consortium_len) { 756 size_t i; 757 fprintf(f, "\troaming_consortium="); 758 for (i = 0; i < cred->roaming_consortium_len; i++) 759 fprintf(f, "%02x", cred->roaming_consortium[i]); 760 fprintf(f, "\n"); 761 } 762 if (cred->eap_method) { 763 const char *name; 764 name = eap_get_name(cred->eap_method[0].vendor, 765 cred->eap_method[0].method); 766 fprintf(f, "\teap=%s\n", name); 767 } 768 if (cred->phase1) 769 fprintf(f, "\tphase1=\"%s\"\n", cred->phase1); 770 if (cred->phase2) 771 fprintf(f, "\tphase2=\"%s\"\n", cred->phase2); 772 if (cred->excluded_ssid) { 773 size_t i, j; 774 for (i = 0; i < cred->num_excluded_ssid; i++) { 775 struct excluded_ssid *e = &cred->excluded_ssid[i]; 776 fprintf(f, "\texcluded_ssid="); 777 for (j = 0; j < e->ssid_len; j++) 778 fprintf(f, "%02x", e->ssid[j]); 779 fprintf(f, "\n"); 780 } 781 } 782 } 783 784 785 #ifndef CONFIG_NO_CONFIG_BLOBS 786 static int wpa_config_write_blob(FILE *f, struct wpa_config_blob *blob) 787 { 788 unsigned char *encoded; 789 790 encoded = base64_encode(blob->data, blob->len, NULL); 791 if (encoded == NULL) 792 return -1; 793 794 fprintf(f, "\nblob-base64-%s={\n%s}\n", blob->name, encoded); 795 os_free(encoded); 796 return 0; 797 } 798 #endif /* CONFIG_NO_CONFIG_BLOBS */ 799 800 801 static void write_global_bin(FILE *f, const char *field, 802 const struct wpabuf *val) 803 { 804 size_t i; 805 const u8 *pos; 806 807 if (val == NULL) 808 return; 809 810 fprintf(f, "%s=", field); 811 pos = wpabuf_head(val); 812 for (i = 0; i < wpabuf_len(val); i++) 813 fprintf(f, "%02X", *pos++); 814 fprintf(f, "\n"); 815 } 816 817 818 static void wpa_config_write_global(FILE *f, struct wpa_config *config) 819 { 820 #ifdef CONFIG_CTRL_IFACE 821 if (config->ctrl_interface) 822 fprintf(f, "ctrl_interface=%s\n", config->ctrl_interface); 823 if (config->ctrl_interface_group) 824 fprintf(f, "ctrl_interface_group=%s\n", 825 config->ctrl_interface_group); 826 #endif /* CONFIG_CTRL_IFACE */ 827 if (config->eapol_version != DEFAULT_EAPOL_VERSION) 828 fprintf(f, "eapol_version=%d\n", config->eapol_version); 829 if (config->ap_scan != DEFAULT_AP_SCAN) 830 fprintf(f, "ap_scan=%d\n", config->ap_scan); 831 if (config->disable_scan_offload) 832 fprintf(f, "disable_scan_offload=%d\n", 833 config->disable_scan_offload); 834 if (config->fast_reauth != DEFAULT_FAST_REAUTH) 835 fprintf(f, "fast_reauth=%d\n", config->fast_reauth); 836 if (config->opensc_engine_path) 837 fprintf(f, "opensc_engine_path=%s\n", 838 config->opensc_engine_path); 839 if (config->pkcs11_engine_path) 840 fprintf(f, "pkcs11_engine_path=%s\n", 841 config->pkcs11_engine_path); 842 if (config->pkcs11_module_path) 843 fprintf(f, "pkcs11_module_path=%s\n", 844 config->pkcs11_module_path); 845 if (config->pcsc_reader) 846 fprintf(f, "pcsc_reader=%s\n", config->pcsc_reader); 847 if (config->pcsc_pin) 848 fprintf(f, "pcsc_pin=%s\n", config->pcsc_pin); 849 if (config->driver_param) 850 fprintf(f, "driver_param=%s\n", config->driver_param); 851 if (config->dot11RSNAConfigPMKLifetime) 852 fprintf(f, "dot11RSNAConfigPMKLifetime=%d\n", 853 config->dot11RSNAConfigPMKLifetime); 854 if (config->dot11RSNAConfigPMKReauthThreshold) 855 fprintf(f, "dot11RSNAConfigPMKReauthThreshold=%d\n", 856 config->dot11RSNAConfigPMKReauthThreshold); 857 if (config->dot11RSNAConfigSATimeout) 858 fprintf(f, "dot11RSNAConfigSATimeout=%d\n", 859 config->dot11RSNAConfigSATimeout); 860 if (config->update_config) 861 fprintf(f, "update_config=%d\n", config->update_config); 862 #ifdef CONFIG_WPS 863 if (!is_nil_uuid(config->uuid)) { 864 char buf[40]; 865 uuid_bin2str(config->uuid, buf, sizeof(buf)); 866 fprintf(f, "uuid=%s\n", buf); 867 } 868 if (config->device_name) 869 fprintf(f, "device_name=%s\n", config->device_name); 870 if (config->manufacturer) 871 fprintf(f, "manufacturer=%s\n", config->manufacturer); 872 if (config->model_name) 873 fprintf(f, "model_name=%s\n", config->model_name); 874 if (config->model_number) 875 fprintf(f, "model_number=%s\n", config->model_number); 876 if (config->serial_number) 877 fprintf(f, "serial_number=%s\n", config->serial_number); 878 { 879 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf; 880 buf = wps_dev_type_bin2str(config->device_type, 881 _buf, sizeof(_buf)); 882 if (os_strcmp(buf, "0-00000000-0") != 0) 883 fprintf(f, "device_type=%s\n", buf); 884 } 885 if (WPA_GET_BE32(config->os_version)) 886 fprintf(f, "os_version=%08x\n", 887 WPA_GET_BE32(config->os_version)); 888 if (config->config_methods) 889 fprintf(f, "config_methods=%s\n", config->config_methods); 890 if (config->wps_cred_processing) 891 fprintf(f, "wps_cred_processing=%d\n", 892 config->wps_cred_processing); 893 if (config->wps_vendor_ext_m1) { 894 int i, len = wpabuf_len(config->wps_vendor_ext_m1); 895 const u8 *p = wpabuf_head_u8(config->wps_vendor_ext_m1); 896 if (len > 0) { 897 fprintf(f, "wps_vendor_ext_m1="); 898 for (i = 0; i < len; i++) 899 fprintf(f, "%02x", *p++); 900 fprintf(f, "\n"); 901 } 902 } 903 #endif /* CONFIG_WPS */ 904 #ifdef CONFIG_P2P 905 if (config->p2p_listen_reg_class) 906 fprintf(f, "p2p_listen_reg_class=%u\n", 907 config->p2p_listen_reg_class); 908 if (config->p2p_listen_channel) 909 fprintf(f, "p2p_listen_channel=%u\n", 910 config->p2p_listen_channel); 911 if (config->p2p_oper_reg_class) 912 fprintf(f, "p2p_oper_reg_class=%u\n", 913 config->p2p_oper_reg_class); 914 if (config->p2p_oper_channel) 915 fprintf(f, "p2p_oper_channel=%u\n", config->p2p_oper_channel); 916 if (config->p2p_go_intent != DEFAULT_P2P_GO_INTENT) 917 fprintf(f, "p2p_go_intent=%u\n", config->p2p_go_intent); 918 if (config->p2p_ssid_postfix) 919 fprintf(f, "p2p_ssid_postfix=%s\n", config->p2p_ssid_postfix); 920 if (config->persistent_reconnect) 921 fprintf(f, "persistent_reconnect=%u\n", 922 config->persistent_reconnect); 923 if (config->p2p_intra_bss != DEFAULT_P2P_INTRA_BSS) 924 fprintf(f, "p2p_intra_bss=%u\n", config->p2p_intra_bss); 925 if (config->p2p_group_idle) 926 fprintf(f, "p2p_group_idle=%u\n", config->p2p_group_idle); 927 if (config->p2p_pref_chan) { 928 unsigned int i; 929 fprintf(f, "p2p_pref_chan="); 930 for (i = 0; i < config->num_p2p_pref_chan; i++) { 931 fprintf(f, "%s%u:%u", i > 0 ? "," : "", 932 config->p2p_pref_chan[i].op_class, 933 config->p2p_pref_chan[i].chan); 934 } 935 fprintf(f, "\n"); 936 } 937 if (config->p2p_go_ht40) 938 fprintf(f, "p2p_go_ht40=%u\n", config->p2p_go_ht40); 939 if (config->p2p_disabled) 940 fprintf(f, "p2p_disabled=%u\n", config->p2p_disabled); 941 if (config->p2p_no_group_iface) 942 fprintf(f, "p2p_no_group_iface=%u\n", 943 config->p2p_no_group_iface); 944 if (config->p2p_ignore_shared_freq) 945 fprintf(f, "p2p_ignore_shared_freq=%u\n", 946 config->p2p_ignore_shared_freq); 947 #endif /* CONFIG_P2P */ 948 if (config->country[0] && config->country[1]) { 949 fprintf(f, "country=%c%c\n", 950 config->country[0], config->country[1]); 951 } 952 if (config->bss_max_count != DEFAULT_BSS_MAX_COUNT) 953 fprintf(f, "bss_max_count=%u\n", config->bss_max_count); 954 if (config->bss_expiration_age != DEFAULT_BSS_EXPIRATION_AGE) 955 fprintf(f, "bss_expiration_age=%u\n", 956 config->bss_expiration_age); 957 if (config->bss_expiration_scan_count != 958 DEFAULT_BSS_EXPIRATION_SCAN_COUNT) 959 fprintf(f, "bss_expiration_scan_count=%u\n", 960 config->bss_expiration_scan_count); 961 if (config->filter_ssids) 962 fprintf(f, "filter_ssids=%d\n", config->filter_ssids); 963 if (config->max_num_sta != DEFAULT_MAX_NUM_STA) 964 fprintf(f, "max_num_sta=%u\n", config->max_num_sta); 965 if (config->disassoc_low_ack) 966 fprintf(f, "disassoc_low_ack=%u\n", config->disassoc_low_ack); 967 #ifdef CONFIG_HS20 968 if (config->hs20) 969 fprintf(f, "hs20=1\n"); 970 #endif /* CONFIG_HS20 */ 971 #ifdef CONFIG_INTERWORKING 972 if (config->interworking) 973 fprintf(f, "interworking=%u\n", config->interworking); 974 if (!is_zero_ether_addr(config->hessid)) 975 fprintf(f, "hessid=" MACSTR "\n", MAC2STR(config->hessid)); 976 if (config->access_network_type != DEFAULT_ACCESS_NETWORK_TYPE) 977 fprintf(f, "access_network_type=%d\n", 978 config->access_network_type); 979 #endif /* CONFIG_INTERWORKING */ 980 if (config->pbc_in_m1) 981 fprintf(f, "pbc_in_m1=%u\n", config->pbc_in_m1); 982 if (config->wps_nfc_pw_from_config) { 983 if (config->wps_nfc_dev_pw_id) 984 fprintf(f, "wps_nfc_dev_pw_id=%d\n", 985 config->wps_nfc_dev_pw_id); 986 write_global_bin(f, "wps_nfc_dh_pubkey", 987 config->wps_nfc_dh_pubkey); 988 write_global_bin(f, "wps_nfc_dh_privkey", 989 config->wps_nfc_dh_privkey); 990 write_global_bin(f, "wps_nfc_dev_pw", config->wps_nfc_dev_pw); 991 } 992 993 if (config->ext_password_backend) 994 fprintf(f, "ext_password_backend=%s\n", 995 config->ext_password_backend); 996 if (config->p2p_go_max_inactivity != DEFAULT_P2P_GO_MAX_INACTIVITY) 997 fprintf(f, "p2p_go_max_inactivity=%d\n", 998 config->p2p_go_max_inactivity); 999 if (config->auto_interworking) 1000 fprintf(f, "auto_interworking=%d\n", 1001 config->auto_interworking); 1002 if (config->okc) 1003 fprintf(f, "okc=%d\n", config->okc); 1004 if (config->pmf) 1005 fprintf(f, "pmf=%d\n", config->pmf); 1006 if (config->dtim_period) 1007 fprintf(f, "dtim_period=%d\n", config->dtim_period); 1008 if (config->beacon_int) 1009 fprintf(f, "beacon_int=%d\n", config->beacon_int); 1010 1011 if (config->sae_groups) { 1012 int i; 1013 fprintf(f, "sae_groups="); 1014 for (i = 0; config->sae_groups[i] >= 0; i++) { 1015 fprintf(f, "%s%d", i > 0 ? " " : "", 1016 config->sae_groups[i]); 1017 } 1018 fprintf(f, "\n"); 1019 } 1020 1021 if (config->ap_vendor_elements) { 1022 int i, len = wpabuf_len(config->ap_vendor_elements); 1023 const u8 *p = wpabuf_head_u8(config->ap_vendor_elements); 1024 if (len > 0) { 1025 fprintf(f, "ap_vendor_elements="); 1026 for (i = 0; i < len; i++) 1027 fprintf(f, "%02x", *p++); 1028 fprintf(f, "\n"); 1029 } 1030 } 1031 1032 if (config->ignore_old_scan_res) 1033 fprintf(f, "ignore_old_scan_res=%d\n", 1034 config->ignore_old_scan_res); 1035 1036 if (config->freq_list && config->freq_list[0]) { 1037 int i; 1038 fprintf(f, "freq_list="); 1039 for (i = 0; config->freq_list[i]; i++) { 1040 fprintf(f, "%s%u", i > 0 ? " " : "", 1041 config->freq_list[i]); 1042 } 1043 fprintf(f, "\n"); 1044 } 1045 if (config->scan_cur_freq != DEFAULT_SCAN_CUR_FREQ) 1046 fprintf(f, "scan_cur_freq=%d\n", config->scan_cur_freq); 1047 1048 if (config->sched_scan_interval) 1049 fprintf(f, "sched_scan_interval=%u\n", 1050 config->sched_scan_interval); 1051 } 1052 1053 #endif /* CONFIG_NO_CONFIG_WRITE */ 1054 1055 1056 int wpa_config_write(const char *name, struct wpa_config *config) 1057 { 1058 #ifndef CONFIG_NO_CONFIG_WRITE 1059 FILE *f; 1060 struct wpa_ssid *ssid; 1061 struct wpa_cred *cred; 1062 #ifndef CONFIG_NO_CONFIG_BLOBS 1063 struct wpa_config_blob *blob; 1064 #endif /* CONFIG_NO_CONFIG_BLOBS */ 1065 int ret = 0; 1066 1067 wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name); 1068 1069 f = fopen(name, "w"); 1070 if (f == NULL) { 1071 wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", name); 1072 return -1; 1073 } 1074 1075 wpa_config_write_global(f, config); 1076 1077 for (cred = config->cred; cred; cred = cred->next) { 1078 fprintf(f, "\ncred={\n"); 1079 wpa_config_write_cred(f, cred); 1080 fprintf(f, "}\n"); 1081 } 1082 1083 for (ssid = config->ssid; ssid; ssid = ssid->next) { 1084 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS || ssid->temporary) 1085 continue; /* do not save temporary networks */ 1086 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set && 1087 !ssid->passphrase) 1088 continue; /* do not save invalid network */ 1089 fprintf(f, "\nnetwork={\n"); 1090 wpa_config_write_network(f, ssid); 1091 fprintf(f, "}\n"); 1092 } 1093 1094 #ifndef CONFIG_NO_CONFIG_BLOBS 1095 for (blob = config->blobs; blob; blob = blob->next) { 1096 ret = wpa_config_write_blob(f, blob); 1097 if (ret) 1098 break; 1099 } 1100 #endif /* CONFIG_NO_CONFIG_BLOBS */ 1101 1102 fclose(f); 1103 1104 wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully", 1105 name, ret ? "un" : ""); 1106 return ret; 1107 #else /* CONFIG_NO_CONFIG_WRITE */ 1108 return -1; 1109 #endif /* CONFIG_NO_CONFIG_WRITE */ 1110 } 1111
