config_file.c revision 04949598a23f501be6eec21697465fd46a28840a
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 21 22/** 23 * wpa_config_get_line - Read the next configuration file line 24 * @s: Buffer for the line 25 * @size: The buffer length 26 * @stream: File stream to read from 27 * @line: Pointer to a variable storing the file line number 28 * @_pos: Buffer for the pointer to the beginning of data on the text line or 29 * %NULL if not needed (returned value used instead) 30 * Returns: Pointer to the beginning of data on the text line or %NULL if no 31 * more text lines are available. 32 * 33 * This function reads the next non-empty line from the configuration file and 34 * removes comments. The returned string is guaranteed to be null-terminated. 35 */ 36static char * wpa_config_get_line(char *s, int size, FILE *stream, int *line, 37 char **_pos) 38{ 39 char *pos, *end, *sstart; 40 41 while (fgets(s, size, stream)) { 42 (*line)++; 43 s[size - 1] = '\0'; 44 pos = s; 45 46 /* Skip white space from the beginning of line. */ 47 while (*pos == ' ' || *pos == '\t' || *pos == '\r') 48 pos++; 49 50 /* Skip comment lines and empty lines */ 51 if (*pos == '#' || *pos == '\n' || *pos == '\0') 52 continue; 53 54 /* 55 * Remove # comments unless they are within a double quoted 56 * string. 57 */ 58 sstart = os_strchr(pos, '"'); 59 if (sstart) 60 sstart = os_strrchr(sstart + 1, '"'); 61 if (!sstart) 62 sstart = pos; 63 end = os_strchr(sstart, '#'); 64 if (end) 65 *end-- = '\0'; 66 else 67 end = pos + os_strlen(pos) - 1; 68 69 /* Remove trailing white space. */ 70 while (end > pos && 71 (*end == '\n' || *end == ' ' || *end == '\t' || 72 *end == '\r')) 73 *end-- = '\0'; 74 75 if (*pos == '\0') 76 continue; 77 78 if (_pos) 79 *_pos = pos; 80 return pos; 81 } 82 83 if (_pos) 84 *_pos = NULL; 85 return NULL; 86} 87 88 89static int wpa_config_validate_network(struct wpa_ssid *ssid, int line) 90{ 91 int errors = 0; 92 93 if (ssid->passphrase) { 94 if (ssid->psk_set) { 95 wpa_printf(MSG_ERROR, "Line %d: both PSK and " 96 "passphrase configured.", line); 97 errors++; 98 } 99 wpa_config_update_psk(ssid); 100 } 101 102 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set) { 103 wpa_printf(MSG_ERROR, "Line %d: WPA-PSK accepted for key " 104 "management, but no PSK configured.", line); 105 errors++; 106 } 107 108 if ((ssid->group_cipher & WPA_CIPHER_CCMP) && 109 !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) && 110 !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) { 111 /* Group cipher cannot be stronger than the pairwise cipher. */ 112 wpa_printf(MSG_DEBUG, "Line %d: removed CCMP from group cipher" 113 " list since it was not allowed for pairwise " 114 "cipher", line); 115 ssid->group_cipher &= ~WPA_CIPHER_CCMP; 116 } 117 118 return errors; 119} 120 121 122static struct wpa_ssid * wpa_config_read_network(FILE *f, int *line, int id) 123{ 124 struct wpa_ssid *ssid; 125 int errors = 0, end = 0; 126 char buf[256], *pos, *pos2; 127 128 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new network block", 129 *line); 130 ssid = os_zalloc(sizeof(*ssid)); 131 if (ssid == NULL) 132 return NULL; 133 ssid->id = id; 134 135 wpa_config_set_network_defaults(ssid); 136 137 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) { 138 if (os_strcmp(pos, "}") == 0) { 139 end = 1; 140 break; 141 } 142 143 pos2 = os_strchr(pos, '='); 144 if (pos2 == NULL) { 145 wpa_printf(MSG_ERROR, "Line %d: Invalid SSID line " 146 "'%s'.", *line, pos); 147 errors++; 148 continue; 149 } 150 151 *pos2++ = '\0'; 152 if (*pos2 == '"') { 153 if (os_strchr(pos2 + 1, '"') == NULL) { 154 wpa_printf(MSG_ERROR, "Line %d: invalid " 155 "quotation '%s'.", *line, pos2); 156 errors++; 157 continue; 158 } 159 } 160 161 if (wpa_config_set(ssid, pos, pos2, *line) < 0) 162 errors++; 163 } 164 165 if (!end) { 166 wpa_printf(MSG_ERROR, "Line %d: network block was not " 167 "terminated properly.", *line); 168 errors++; 169 } 170 171 errors += wpa_config_validate_network(ssid, *line); 172 173 if (errors) { 174 wpa_config_free_ssid(ssid); 175 ssid = NULL; 176 } 177 178 return ssid; 179} 180 181 182static struct wpa_cred * wpa_config_read_cred(FILE *f, int *line, int id) 183{ 184 struct wpa_cred *cred; 185 int errors = 0, end = 0; 186 char buf[256], *pos, *pos2; 187 188 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new cred block", *line); 189 cred = os_zalloc(sizeof(*cred)); 190 if (cred == NULL) 191 return NULL; 192 cred->id = id; 193 194 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) { 195 if (os_strcmp(pos, "}") == 0) { 196 end = 1; 197 break; 198 } 199 200 pos2 = os_strchr(pos, '='); 201 if (pos2 == NULL) { 202 wpa_printf(MSG_ERROR, "Line %d: Invalid cred line " 203 "'%s'.", *line, pos); 204 errors++; 205 continue; 206 } 207 208 *pos2++ = '\0'; 209 if (*pos2 == '"') { 210 if (os_strchr(pos2 + 1, '"') == NULL) { 211 wpa_printf(MSG_ERROR, "Line %d: invalid " 212 "quotation '%s'.", *line, pos2); 213 errors++; 214 continue; 215 } 216 } 217 218 if (wpa_config_set_cred(cred, pos, pos2, *line) < 0) 219 errors++; 220 } 221 222 if (!end) { 223 wpa_printf(MSG_ERROR, "Line %d: cred block was not " 224 "terminated properly.", *line); 225 errors++; 226 } 227 228 if (errors) { 229 wpa_config_free_cred(cred); 230 cred = NULL; 231 } 232 233 return cred; 234} 235 236 237#ifndef CONFIG_NO_CONFIG_BLOBS 238static struct wpa_config_blob * wpa_config_read_blob(FILE *f, int *line, 239 const char *name) 240{ 241 struct wpa_config_blob *blob; 242 char buf[256], *pos; 243 unsigned char *encoded = NULL, *nencoded; 244 int end = 0; 245 size_t encoded_len = 0, len; 246 247 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new named blob '%s'", 248 *line, name); 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 len = os_strlen(pos); 257 nencoded = os_realloc(encoded, encoded_len + len); 258 if (nencoded == NULL) { 259 wpa_printf(MSG_ERROR, "Line %d: not enough memory for " 260 "blob", *line); 261 os_free(encoded); 262 return NULL; 263 } 264 encoded = nencoded; 265 os_memcpy(encoded + encoded_len, pos, len); 266 encoded_len += len; 267 } 268 269 if (!end) { 270 wpa_printf(MSG_ERROR, "Line %d: blob was not terminated " 271 "properly", *line); 272 os_free(encoded); 273 return NULL; 274 } 275 276 blob = os_zalloc(sizeof(*blob)); 277 if (blob == NULL) { 278 os_free(encoded); 279 return NULL; 280 } 281 blob->name = os_strdup(name); 282 blob->data = base64_decode(encoded, encoded_len, &blob->len); 283 os_free(encoded); 284 285 if (blob->name == NULL || blob->data == NULL) { 286 wpa_config_free_blob(blob); 287 return NULL; 288 } 289 290 return blob; 291} 292 293 294static int wpa_config_process_blob(struct wpa_config *config, FILE *f, 295 int *line, char *bname) 296{ 297 char *name_end; 298 struct wpa_config_blob *blob; 299 300 name_end = os_strchr(bname, '='); 301 if (name_end == NULL) { 302 wpa_printf(MSG_ERROR, "Line %d: no blob name terminator", 303 *line); 304 return -1; 305 } 306 *name_end = '\0'; 307 308 blob = wpa_config_read_blob(f, line, bname); 309 if (blob == NULL) { 310 wpa_printf(MSG_ERROR, "Line %d: failed to read blob %s", 311 *line, bname); 312 return -1; 313 } 314 wpa_config_set_blob(config, blob); 315 return 0; 316} 317#endif /* CONFIG_NO_CONFIG_BLOBS */ 318 319 320struct wpa_config * wpa_config_read(const char *name) 321{ 322 FILE *f; 323 char buf[512], *pos; 324 int errors = 0, line = 0; 325 struct wpa_ssid *ssid, *tail = NULL, *head = NULL; 326 struct wpa_cred *cred, *cred_tail = NULL, *cred_head = NULL; 327 struct wpa_config *config; 328 int id = 0; 329 int cred_id = 0; 330 331 config = wpa_config_alloc_empty(NULL, NULL); 332 if (config == NULL) 333 return NULL; 334 wpa_printf(MSG_DEBUG, "Reading configuration file '%s'", name); 335 f = fopen(name, "r"); 336 if (f == NULL) { 337 os_free(config); 338 return NULL; 339 } 340 341 while (wpa_config_get_line(buf, sizeof(buf), f, &line, &pos)) { 342 if (os_strcmp(pos, "network={") == 0) { 343 ssid = wpa_config_read_network(f, &line, id++); 344 if (ssid == NULL) { 345 wpa_printf(MSG_ERROR, "Line %d: failed to " 346 "parse network block.", line); 347 errors++; 348 continue; 349 } 350 if (head == NULL) { 351 head = tail = ssid; 352 } else { 353 tail->next = ssid; 354 tail = ssid; 355 } 356 if (wpa_config_add_prio_network(config, ssid)) { 357 wpa_printf(MSG_ERROR, "Line %d: failed to add " 358 "network block to priority list.", 359 line); 360 errors++; 361 continue; 362 } 363 } else if (os_strcmp(pos, "cred={") == 0) { 364 cred = wpa_config_read_cred(f, &line, cred_id++); 365 if (cred == NULL) { 366 wpa_printf(MSG_ERROR, "Line %d: failed to " 367 "parse cred block.", line); 368 errors++; 369 continue; 370 } 371 if (cred_head == NULL) { 372 cred_head = cred_tail = cred; 373 } else { 374 cred_tail->next = cred; 375 cred_tail = cred; 376 } 377#ifndef CONFIG_NO_CONFIG_BLOBS 378 } else if (os_strncmp(pos, "blob-base64-", 12) == 0) { 379 if (wpa_config_process_blob(config, f, &line, pos + 12) 380 < 0) { 381 errors++; 382 continue; 383 } 384#endif /* CONFIG_NO_CONFIG_BLOBS */ 385 } else if (wpa_config_process_global(config, pos, line) < 0) { 386 wpa_printf(MSG_ERROR, "Line %d: Invalid configuration " 387 "line '%s'.", line, pos); 388 errors++; 389 continue; 390 } 391 } 392 393 fclose(f); 394 395 config->ssid = head; 396 wpa_config_debug_dump_networks(config); 397 config->cred = cred_head; 398 399#ifndef WPA_IGNORE_CONFIG_ERRORS 400 if (errors) { 401 wpa_config_free(config); 402 config = NULL; 403 head = NULL; 404 } 405#endif /* WPA_IGNORE_CONFIG_ERRORS */ 406 407 return config; 408} 409 410 411#ifndef CONFIG_NO_CONFIG_WRITE 412 413static void write_str(FILE *f, const char *field, struct wpa_ssid *ssid) 414{ 415 char *value = wpa_config_get(ssid, field); 416 if (value == NULL) 417 return; 418 fprintf(f, "\t%s=%s\n", field, value); 419 os_free(value); 420} 421 422 423static void write_int(FILE *f, const char *field, int value, int def) 424{ 425 if (value == def) 426 return; 427 fprintf(f, "\t%s=%d\n", field, value); 428} 429 430 431static void write_bssid(FILE *f, struct wpa_ssid *ssid) 432{ 433 char *value = wpa_config_get(ssid, "bssid"); 434 if (value == NULL) 435 return; 436 fprintf(f, "\tbssid=%s\n", value); 437 os_free(value); 438} 439 440 441static void write_psk(FILE *f, struct wpa_ssid *ssid) 442{ 443 char *value = wpa_config_get(ssid, "psk"); 444 if (value == NULL) 445 return; 446 fprintf(f, "\tpsk=%s\n", value); 447 os_free(value); 448} 449 450 451static void write_proto(FILE *f, struct wpa_ssid *ssid) 452{ 453 char *value; 454 455 if (ssid->proto == DEFAULT_PROTO) 456 return; 457 458 value = wpa_config_get(ssid, "proto"); 459 if (value == NULL) 460 return; 461 if (value[0]) 462 fprintf(f, "\tproto=%s\n", value); 463 os_free(value); 464} 465 466 467static void write_key_mgmt(FILE *f, struct wpa_ssid *ssid) 468{ 469 char *value; 470 471 if (ssid->key_mgmt == DEFAULT_KEY_MGMT) 472 return; 473 474 value = wpa_config_get(ssid, "key_mgmt"); 475 if (value == NULL) 476 return; 477 if (value[0]) 478 fprintf(f, "\tkey_mgmt=%s\n", value); 479 os_free(value); 480} 481 482 483static void write_pairwise(FILE *f, struct wpa_ssid *ssid) 484{ 485 char *value; 486 487 if (ssid->pairwise_cipher == DEFAULT_PAIRWISE) 488 return; 489 490 value = wpa_config_get(ssid, "pairwise"); 491 if (value == NULL) 492 return; 493 if (value[0]) 494 fprintf(f, "\tpairwise=%s\n", value); 495 os_free(value); 496} 497 498 499static void write_group(FILE *f, struct wpa_ssid *ssid) 500{ 501 char *value; 502 503 if (ssid->group_cipher == DEFAULT_GROUP) 504 return; 505 506 value = wpa_config_get(ssid, "group"); 507 if (value == NULL) 508 return; 509 if (value[0]) 510 fprintf(f, "\tgroup=%s\n", value); 511 os_free(value); 512} 513 514 515static void write_auth_alg(FILE *f, struct wpa_ssid *ssid) 516{ 517 char *value; 518 519 if (ssid->auth_alg == 0) 520 return; 521 522 value = wpa_config_get(ssid, "auth_alg"); 523 if (value == NULL) 524 return; 525 if (value[0]) 526 fprintf(f, "\tauth_alg=%s\n", value); 527 os_free(value); 528} 529 530 531#ifdef IEEE8021X_EAPOL 532static void write_eap(FILE *f, struct wpa_ssid *ssid) 533{ 534 char *value; 535 536 value = wpa_config_get(ssid, "eap"); 537 if (value == NULL) 538 return; 539 540 if (value[0]) 541 fprintf(f, "\teap=%s\n", value); 542 os_free(value); 543} 544#endif /* IEEE8021X_EAPOL */ 545 546 547static void write_wep_key(FILE *f, int idx, struct wpa_ssid *ssid) 548{ 549 char field[20], *value; 550 int res; 551 552 res = os_snprintf(field, sizeof(field), "wep_key%d", idx); 553 if (res < 0 || (size_t) res >= sizeof(field)) 554 return; 555 value = wpa_config_get(ssid, field); 556 if (value) { 557 fprintf(f, "\t%s=%s\n", field, value); 558 os_free(value); 559 } 560} 561 562 563#ifdef CONFIG_P2P 564static void write_p2p_client_list(FILE *f, struct wpa_ssid *ssid) 565{ 566 char *value = wpa_config_get(ssid, "p2p_client_list"); 567 if (value == NULL) 568 return; 569 fprintf(f, "\tp2p_client_list=%s\n", value); 570 os_free(value); 571} 572#endif /* CONFIG_P2P */ 573 574 575static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid) 576{ 577 int i; 578 579#define STR(t) write_str(f, #t, ssid) 580#define INT(t) write_int(f, #t, ssid->t, 0) 581#define INTe(t) write_int(f, #t, ssid->eap.t, 0) 582#define INT_DEF(t, def) write_int(f, #t, ssid->t, def) 583#define INT_DEFe(t, def) write_int(f, #t, ssid->eap.t, def) 584 585 STR(ssid); 586 INT(scan_ssid); 587 write_bssid(f, ssid); 588 write_psk(f, ssid); 589 write_proto(f, ssid); 590 write_key_mgmt(f, ssid); 591 INT_DEF(bg_scan_period, DEFAULT_BG_SCAN_PERIOD); 592 write_pairwise(f, ssid); 593 write_group(f, ssid); 594 write_auth_alg(f, ssid); 595 STR(bgscan); 596 STR(autoscan); 597#ifdef IEEE8021X_EAPOL 598 write_eap(f, ssid); 599 STR(identity); 600 STR(anonymous_identity); 601 STR(password); 602 STR(ca_cert); 603 STR(ca_path); 604 STR(client_cert); 605 STR(private_key); 606 STR(private_key_passwd); 607 STR(dh_file); 608 STR(subject_match); 609 STR(altsubject_match); 610 STR(ca_cert2); 611 STR(ca_path2); 612 STR(client_cert2); 613 STR(private_key2); 614 STR(private_key2_passwd); 615 STR(dh_file2); 616 STR(subject_match2); 617 STR(altsubject_match2); 618 STR(phase1); 619 STR(phase2); 620 STR(pcsc); 621 STR(pin); 622 STR(engine_id); 623 STR(key_id); 624 STR(cert_id); 625 STR(ca_cert_id); 626 STR(key2_id); 627 STR(pin2); 628 STR(engine2_id); 629 STR(cert2_id); 630 STR(ca_cert2_id); 631 INTe(engine); 632 INTe(engine2); 633 INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS); 634#endif /* IEEE8021X_EAPOL */ 635 for (i = 0; i < 4; i++) 636 write_wep_key(f, i, ssid); 637 INT(wep_tx_keyidx); 638 INT(priority); 639#ifdef IEEE8021X_EAPOL 640 INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND); 641 STR(pac_file); 642 INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE); 643#endif /* IEEE8021X_EAPOL */ 644 INT(mode); 645 INT(proactive_key_caching); 646 INT(disabled); 647 INT(peerkey); 648#ifdef CONFIG_IEEE80211W 649 INT(ieee80211w); 650#endif /* CONFIG_IEEE80211W */ 651 STR(id_str); 652#ifdef CONFIG_P2P 653 write_p2p_client_list(f, ssid); 654#endif /* CONFIG_P2P */ 655 656#undef STR 657#undef INT 658#undef INT_DEF 659} 660 661 662static void wpa_config_write_cred(FILE *f, struct wpa_cred *cred) 663{ 664 if (cred->priority) 665 fprintf(f, "\tpriority=%d\n", cred->priority); 666 if (cred->pcsc) 667 fprintf(f, "\tpcsc=%d\n", cred->pcsc); 668 if (cred->realm) 669 fprintf(f, "\trealm=\"%s\"\n", cred->realm); 670 if (cred->username) 671 fprintf(f, "\tusername=\"%s\"\n", cred->username); 672 if (cred->password) 673 fprintf(f, "\tpassword=\"%s\"\n", cred->password); 674 if (cred->ca_cert) 675 fprintf(f, "\tca_cert=\"%s\"\n", cred->ca_cert); 676 if (cred->imsi) 677 fprintf(f, "\timsi=\"%s\"\n", cred->imsi); 678 if (cred->milenage) 679 fprintf(f, "\tmilenage=\"%s\"\n", cred->milenage); 680 if (cred->domain) 681 fprintf(f, "\tdomain=\"%s\"\n", cred->domain); 682} 683 684 685#ifndef CONFIG_NO_CONFIG_BLOBS 686static int wpa_config_write_blob(FILE *f, struct wpa_config_blob *blob) 687{ 688 unsigned char *encoded; 689 690 encoded = base64_encode(blob->data, blob->len, NULL); 691 if (encoded == NULL) 692 return -1; 693 694 fprintf(f, "\nblob-base64-%s={\n%s}\n", blob->name, encoded); 695 os_free(encoded); 696 return 0; 697} 698#endif /* CONFIG_NO_CONFIG_BLOBS */ 699 700 701static void write_global_bin(FILE *f, const char *field, 702 const struct wpabuf *val) 703{ 704 size_t i; 705 const u8 *pos; 706 707 if (val == NULL) 708 return; 709 710 fprintf(f, "%s=", field); 711 pos = wpabuf_head(val); 712 for (i = 0; i < wpabuf_len(val); i++) 713 fprintf(f, "%02X", *pos++); 714 fprintf(f, "\n"); 715} 716 717 718static void wpa_config_write_global(FILE *f, struct wpa_config *config) 719{ 720#ifdef CONFIG_CTRL_IFACE 721 if (config->ctrl_interface) 722 fprintf(f, "ctrl_interface=%s\n", config->ctrl_interface); 723 if (config->ctrl_interface_group) 724 fprintf(f, "ctrl_interface_group=%s\n", 725 config->ctrl_interface_group); 726#endif /* CONFIG_CTRL_IFACE */ 727 if (config->eapol_version != DEFAULT_EAPOL_VERSION) 728 fprintf(f, "eapol_version=%d\n", config->eapol_version); 729 if (config->ap_scan != DEFAULT_AP_SCAN) 730 fprintf(f, "ap_scan=%d\n", config->ap_scan); 731 if (config->disable_scan_offload) 732 fprintf(f, "disable_scan_offload=%d\n", 733 config->disable_scan_offload); 734 if (config->fast_reauth != DEFAULT_FAST_REAUTH) 735 fprintf(f, "fast_reauth=%d\n", config->fast_reauth); 736 if (config->opensc_engine_path) 737 fprintf(f, "opensc_engine_path=%s\n", 738 config->opensc_engine_path); 739 if (config->pkcs11_engine_path) 740 fprintf(f, "pkcs11_engine_path=%s\n", 741 config->pkcs11_engine_path); 742 if (config->pkcs11_module_path) 743 fprintf(f, "pkcs11_module_path=%s\n", 744 config->pkcs11_module_path); 745 if (config->pcsc_reader) 746 fprintf(f, "pcsc_reader=%s\n", config->pcsc_reader); 747 if (config->pcsc_pin) 748 fprintf(f, "pcsc_pin=%s\n", config->pcsc_pin); 749 if (config->driver_param) 750 fprintf(f, "driver_param=%s\n", config->driver_param); 751 if (config->dot11RSNAConfigPMKLifetime) 752 fprintf(f, "dot11RSNAConfigPMKLifetime=%d\n", 753 config->dot11RSNAConfigPMKLifetime); 754 if (config->dot11RSNAConfigPMKReauthThreshold) 755 fprintf(f, "dot11RSNAConfigPMKReauthThreshold=%d\n", 756 config->dot11RSNAConfigPMKReauthThreshold); 757 if (config->dot11RSNAConfigSATimeout) 758 fprintf(f, "dot11RSNAConfigSATimeout=%d\n", 759 config->dot11RSNAConfigSATimeout); 760 if (config->update_config) 761 fprintf(f, "update_config=%d\n", config->update_config); 762#ifdef CONFIG_WPS 763 if (!is_nil_uuid(config->uuid)) { 764 char buf[40]; 765 uuid_bin2str(config->uuid, buf, sizeof(buf)); 766 fprintf(f, "uuid=%s\n", buf); 767 } 768 if (config->device_name) 769 fprintf(f, "device_name=%s\n", config->device_name); 770 if (config->manufacturer) 771 fprintf(f, "manufacturer=%s\n", config->manufacturer); 772 if (config->model_name) 773 fprintf(f, "model_name=%s\n", config->model_name); 774 if (config->model_number) 775 fprintf(f, "model_number=%s\n", config->model_number); 776 if (config->serial_number) 777 fprintf(f, "serial_number=%s\n", config->serial_number); 778 { 779 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf; 780 buf = wps_dev_type_bin2str(config->device_type, 781 _buf, sizeof(_buf)); 782 if (os_strcmp(buf, "0-00000000-0") != 0) 783 fprintf(f, "device_type=%s\n", buf); 784 } 785 if (WPA_GET_BE32(config->os_version)) 786 fprintf(f, "os_version=%08x\n", 787 WPA_GET_BE32(config->os_version)); 788 if (config->config_methods) 789 fprintf(f, "config_methods=%s\n", config->config_methods); 790 if (config->wps_cred_processing) 791 fprintf(f, "wps_cred_processing=%d\n", 792 config->wps_cred_processing); 793 if (config->wps_vendor_ext_m1) { 794 int i, len = wpabuf_len(config->wps_vendor_ext_m1); 795 const u8 *p = wpabuf_head_u8(config->wps_vendor_ext_m1); 796 if (len > 0) { 797 fprintf(f, "wps_vendor_ext_m1="); 798 for (i = 0; i < len; i++) 799 fprintf(f, "%02x", *p++); 800 fprintf(f, "\n"); 801 } 802 } 803#endif /* CONFIG_WPS */ 804#ifdef CONFIG_P2P 805 if (config->p2p_listen_reg_class) 806 fprintf(f, "p2p_listen_reg_class=%u\n", 807 config->p2p_listen_reg_class); 808 if (config->p2p_listen_channel) 809 fprintf(f, "p2p_listen_channel=%u\n", 810 config->p2p_listen_channel); 811 if (config->p2p_oper_reg_class) 812 fprintf(f, "p2p_oper_reg_class=%u\n", 813 config->p2p_oper_reg_class); 814 if (config->p2p_oper_channel) 815 fprintf(f, "p2p_oper_channel=%u\n", config->p2p_oper_channel); 816 if (config->p2p_go_intent != DEFAULT_P2P_GO_INTENT) 817 fprintf(f, "p2p_go_intent=%u\n", config->p2p_go_intent); 818 if (config->p2p_ssid_postfix) 819 fprintf(f, "p2p_ssid_postfix=%s\n", config->p2p_ssid_postfix); 820 if (config->persistent_reconnect) 821 fprintf(f, "persistent_reconnect=%u\n", 822 config->persistent_reconnect); 823 if (config->p2p_intra_bss != DEFAULT_P2P_INTRA_BSS) 824 fprintf(f, "p2p_intra_bss=%u\n", config->p2p_intra_bss); 825 if (config->p2p_group_idle) 826 fprintf(f, "p2p_group_idle=%u\n", config->p2p_group_idle); 827 if (config->p2p_pref_chan) { 828 unsigned int i; 829 fprintf(f, "p2p_pref_chan="); 830 for (i = 0; i < config->num_p2p_pref_chan; i++) { 831 fprintf(f, "%s%u:%u", i > 0 ? "," : "", 832 config->p2p_pref_chan[i].op_class, 833 config->p2p_pref_chan[i].chan); 834 } 835 fprintf(f, "\n"); 836 } 837#endif /* CONFIG_P2P */ 838 if (config->country[0] && config->country[1]) { 839 fprintf(f, "country=%c%c\n", 840 config->country[0], config->country[1]); 841 } 842 if (config->bss_max_count != DEFAULT_BSS_MAX_COUNT) 843 fprintf(f, "bss_max_count=%u\n", config->bss_max_count); 844 if (config->bss_expiration_age != DEFAULT_BSS_EXPIRATION_AGE) 845 fprintf(f, "bss_expiration_age=%u\n", 846 config->bss_expiration_age); 847 if (config->bss_expiration_scan_count != 848 DEFAULT_BSS_EXPIRATION_SCAN_COUNT) 849 fprintf(f, "bss_expiration_scan_count=%u\n", 850 config->bss_expiration_scan_count); 851 if (config->filter_ssids) 852 fprintf(f, "filter_ssids=%d\n", config->filter_ssids); 853 if (config->max_num_sta != DEFAULT_MAX_NUM_STA) 854 fprintf(f, "max_num_sta=%u\n", config->max_num_sta); 855 if (config->disassoc_low_ack) 856 fprintf(f, "disassoc_low_ack=%u\n", config->disassoc_low_ack); 857#ifdef CONFIG_HS20 858 if (config->hs20) 859 fprintf(f, "hs20=1\n"); 860#endif /* CONFIG_HS20 */ 861#ifdef CONFIG_INTERWORKING 862 if (config->interworking) 863 fprintf(f, "interworking=%u\n", config->interworking); 864 if (!is_zero_ether_addr(config->hessid)) 865 fprintf(f, "hessid=" MACSTR "\n", MAC2STR(config->hessid)); 866 if (config->access_network_type != DEFAULT_ACCESS_NETWORK_TYPE) 867 fprintf(f, "access_network_type=%d\n", 868 config->access_network_type); 869#endif /* CONFIG_INTERWORKING */ 870 if (config->pbc_in_m1) 871 fprintf(f, "pbc_in_m1=%u\n", config->pbc_in_m1); 872 if (config->wps_nfc_dev_pw_id) 873 fprintf(f, "wps_nfc_dev_pw_id=%d\n", 874 config->wps_nfc_dev_pw_id); 875 write_global_bin(f, "wps_nfc_dh_pubkey", config->wps_nfc_dh_pubkey); 876 write_global_bin(f, "wps_nfc_dh_privkey", config->wps_nfc_dh_privkey); 877 write_global_bin(f, "wps_nfc_dev_pw", config->wps_nfc_dev_pw); 878} 879 880#endif /* CONFIG_NO_CONFIG_WRITE */ 881 882 883int wpa_config_write(const char *name, struct wpa_config *config) 884{ 885#ifndef CONFIG_NO_CONFIG_WRITE 886 FILE *f; 887 struct wpa_ssid *ssid; 888 struct wpa_cred *cred; 889#ifndef CONFIG_NO_CONFIG_BLOBS 890 struct wpa_config_blob *blob; 891#endif /* CONFIG_NO_CONFIG_BLOBS */ 892 int ret = 0; 893 894 wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name); 895 896 f = fopen(name, "w"); 897 if (f == NULL) { 898 wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", name); 899 return -1; 900 } 901 902 wpa_config_write_global(f, config); 903 904 for (cred = config->cred; cred; cred = cred->next) { 905 fprintf(f, "\ncred={\n"); 906 wpa_config_write_cred(f, cred); 907 fprintf(f, "}\n"); 908 } 909 910 for (ssid = config->ssid; ssid; ssid = ssid->next) { 911 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS || ssid->temporary) 912 continue; /* do not save temporary networks */ 913 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set && 914 !ssid->passphrase) 915 continue; /* do not save invalid network */ 916 fprintf(f, "\nnetwork={\n"); 917 wpa_config_write_network(f, ssid); 918 fprintf(f, "}\n"); 919 } 920 921#ifndef CONFIG_NO_CONFIG_BLOBS 922 for (blob = config->blobs; blob; blob = blob->next) { 923 ret = wpa_config_write_blob(f, blob); 924 if (ret) 925 break; 926 } 927#endif /* CONFIG_NO_CONFIG_BLOBS */ 928 929 fclose(f); 930 931 wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully", 932 name, ret ? "un" : ""); 933 return ret; 934#else /* CONFIG_NO_CONFIG_WRITE */ 935 return -1; 936#endif /* CONFIG_NO_CONFIG_WRITE */ 937} 938