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[thirdparty/hostap.git] / wpa_supplicant / config_file.c
CommitLineData
6fc6879b
JM		 1/*
2 * WPA Supplicant / Configuration backend: text file
f64adcd7 3 * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
6fc6879b 4 *
0f3d578e
JM		 5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
6fc6879b
JM		 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"
f855f923 18#include "uuid.h"
21d996f7 19#include "p2p/p2p.h"
9aae09f1
JM		 20#include "eap_peer/eap_methods.h"
21#include "eap_peer/eap.h"
6fc6879b
JM		 22
23
d42bc5e1
JM		 24static 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
36static 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
6fc6879b
JM		 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 */
61static 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';
d42bc5e1
JM		 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 }
6fc6879b
JM		 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
123static 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
6fc6879b
JM		 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
150static 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;
d42bc5e1 154 char buf[2000], *pos, *pos2;
6fc6879b
JM		 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 ssid->id = id;
162
163 wpa_config_set_network_defaults(ssid);
164
165 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
166 if (os_strcmp(pos, "}") == 0) {
167 end = 1;
168 break;
169 }
170
171 pos2 = os_strchr(pos, '=');
172 if (pos2 == NULL) {
173 wpa_printf(MSG_ERROR, "Line %d: Invalid SSID line "
174 "'%s'.", *line, pos);
175 errors++;
176 continue;
177 }
178
179 *pos2++ = '\0';
180 if (*pos2 == '"') {
181 if (os_strchr(pos2 + 1, '"') == NULL) {
182 wpa_printf(MSG_ERROR, "Line %d: invalid "
183 "quotation '%s'.", *line, pos2);
184 errors++;
185 continue;
186 }
187 }
188
189 if (wpa_config_set(ssid, pos, pos2, *line) < 0)
190 errors++;
191 }
192
193 if (!end) {
194 wpa_printf(MSG_ERROR, "Line %d: network block was not "
195 "terminated properly.", *line);
196 errors++;
197 }
198
199 errors += wpa_config_validate_network(ssid, *line);
200
201 if (errors) {
202 wpa_config_free_ssid(ssid);
203 ssid = NULL;
204 }
205
206 return ssid;
207}
208
209
1bb7b8e8
JM		 210static struct wpa_cred * wpa_config_read_cred(FILE *f, int *line, int id)
211{
212 struct wpa_cred *cred;
213 int errors = 0, end = 0;
214 char buf[256], *pos, *pos2;
215
216 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new cred block", *line);
217 cred = os_zalloc(sizeof(*cred));
218 if (cred == NULL)
219 return NULL;
220 cred->id = id;
221
222 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
223 if (os_strcmp(pos, "}") == 0) {
224 end = 1;
225 break;
226 }
227
228 pos2 = os_strchr(pos, '=');
229 if (pos2 == NULL) {
230 wpa_printf(MSG_ERROR, "Line %d: Invalid cred line "
231 "'%s'.", *line, pos);
232 errors++;
233 continue;
234 }
235
236 *pos2++ = '\0';
237 if (*pos2 == '"') {
238 if (os_strchr(pos2 + 1, '"') == NULL) {
239 wpa_printf(MSG_ERROR, "Line %d: invalid "
240 "quotation '%s'.", *line, pos2);
241 errors++;
242 continue;
243 }
244 }
245
246 if (wpa_config_set_cred(cred, pos, pos2, *line) < 0)
247 errors++;
248 }
249
250 if (!end) {
251 wpa_printf(MSG_ERROR, "Line %d: cred block was not "
252 "terminated properly.", *line);
253 errors++;
254 }
255
256 if (errors) {
257 wpa_config_free_cred(cred);
258 cred = NULL;
259 }
260
261 return cred;
262}
263
264
6fc6879b
JM		 265#ifndef CONFIG_NO_CONFIG_BLOBS
266static struct wpa_config_blob * wpa_config_read_blob(FILE *f, int *line,
267 const char *name)
268{
269 struct wpa_config_blob *blob;
270 char buf[256], *pos;
271 unsigned char *encoded = NULL, *nencoded;
272 int end = 0;
273 size_t encoded_len = 0, len;
274
275 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new named blob '%s'",
276 *line, name);
277
278 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
279 if (os_strcmp(pos, "}") == 0) {
280 end = 1;
281 break;
282 }
283
284 len = os_strlen(pos);
285 nencoded = os_realloc(encoded, encoded_len + len);
286 if (nencoded == NULL) {
287 wpa_printf(MSG_ERROR, "Line %d: not enough memory for "
288 "blob", *line);
289 os_free(encoded);
290 return NULL;
291 }
292 encoded = nencoded;
293 os_memcpy(encoded + encoded_len, pos, len);
294 encoded_len += len;
295 }
296
297 if (!end) {
298 wpa_printf(MSG_ERROR, "Line %d: blob was not terminated "
299 "properly", *line);
300 os_free(encoded);
301 return NULL;
302 }
303
304 blob = os_zalloc(sizeof(*blob));
305 if (blob == NULL) {
306 os_free(encoded);
307 return NULL;
308 }
309 blob->name = os_strdup(name);
310 blob->data = base64_decode(encoded, encoded_len, &blob->len);
311 os_free(encoded);
312
313 if (blob->name == NULL || blob->data == NULL) {
314 wpa_config_free_blob(blob);
315 return NULL;
316 }
317
318 return blob;
319}
320
321
322static int wpa_config_process_blob(struct wpa_config *config, FILE *f,
323 int *line, char *bname)
324{
325 char *name_end;
326 struct wpa_config_blob *blob;
327
328 name_end = os_strchr(bname, '=');
329 if (name_end == NULL) {
330 wpa_printf(MSG_ERROR, "Line %d: no blob name terminator",
331 *line);
332 return -1;
333 }
334 *name_end = '\0';
335
336 blob = wpa_config_read_blob(f, line, bname);
337 if (blob == NULL) {
338 wpa_printf(MSG_ERROR, "Line %d: failed to read blob %s",
339 *line, bname);
340 return -1;
341 }
342 wpa_config_set_blob(config, blob);
343 return 0;
344}
345#endif /* CONFIG_NO_CONFIG_BLOBS */
346
347
6fc6879b
JM		 348struct wpa_config * wpa_config_read(const char *name)
349{
350 FILE *f;
3f2c8ba6 351 char buf[512], *pos;
6fc6879b
JM		 352 int errors = 0, line = 0;
353 struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
1bb7b8e8 354 struct wpa_cred *cred, *cred_tail = NULL, *cred_head = NULL;
6fc6879b
JM		 355 struct wpa_config *config;
356 int id = 0;
1bb7b8e8 357 int cred_id = 0;
6fc6879b
JM		 358
359 config = wpa_config_alloc_empty(NULL, NULL);
481cac21
BG		 360 if (config == NULL) {
361 wpa_printf(MSG_ERROR, "Failed to allocate config file "
362 "structure");
6fc6879b 363 return NULL;
481cac21
BG		 364 }
365
6fc6879b
JM		 366 wpa_printf(MSG_DEBUG, "Reading configuration file '%s'", name);
367 f = fopen(name, "r");
368 if (f == NULL) {
481cac21
BG		 369 wpa_printf(MSG_ERROR, "Failed to open config file '%s', "
370 "error: %s", name, strerror(errno));
6fc6879b
JM		 371 os_free(config);
372 return NULL;
373 }
374
375 while (wpa_config_get_line(buf, sizeof(buf), f, &line, &pos)) {
376 if (os_strcmp(pos, "network={") == 0) {
377 ssid = wpa_config_read_network(f, &line, id++);
378 if (ssid == NULL) {
379 wpa_printf(MSG_ERROR, "Line %d: failed to "
380 "parse network block.", line);
381 errors++;
382 continue;
383 }
384 if (head == NULL) {
385 head = tail = ssid;
386 } else {
387 tail->next = ssid;
388 tail = ssid;
389 }
390 if (wpa_config_add_prio_network(config, ssid)) {
391 wpa_printf(MSG_ERROR, "Line %d: failed to add "
392 "network block to priority list.",
393 line);
394 errors++;
395 continue;
396 }
1bb7b8e8
JM		 397 } else if (os_strcmp(pos, "cred={") == 0) {
398 cred = wpa_config_read_cred(f, &line, cred_id++);
399 if (cred == NULL) {
400 wpa_printf(MSG_ERROR, "Line %d: failed to "
401 "parse cred block.", line);
402 errors++;
403 continue;
404 }
405 if (cred_head == NULL) {
406 cred_head = cred_tail = cred;
407 } else {
408 cred_tail->next = cred;
409 cred_tail = cred;
410 }
6fc6879b
JM		 411#ifndef CONFIG_NO_CONFIG_BLOBS
412 } else if (os_strncmp(pos, "blob-base64-", 12) == 0) {
413 if (wpa_config_process_blob(config, f, &line, pos + 12)
414 < 0) {
481cac21
BG		 415 wpa_printf(MSG_ERROR, "Line %d: failed to "
416 "process blob.", line);
6fc6879b
JM		 417 errors++;
418 continue;
419 }
420#endif /* CONFIG_NO_CONFIG_BLOBS */
421 } else if (wpa_config_process_global(config, pos, line) < 0) {
422 wpa_printf(MSG_ERROR, "Line %d: Invalid configuration "
423 "line '%s'.", line, pos);
424 errors++;
425 continue;
426 }
427 }
428
429 fclose(f);
430
431 config->ssid = head;
432 wpa_config_debug_dump_networks(config);
1bb7b8e8 433 config->cred = cred_head;
6fc6879b 434
ae6e1bee 435#ifndef WPA_IGNORE_CONFIG_ERRORS
6fc6879b
JM		 436 if (errors) {
437 wpa_config_free(config);
438 config = NULL;
439 head = NULL;
440 }
ae6e1bee 441#endif /* WPA_IGNORE_CONFIG_ERRORS */
6fc6879b
JM		 442
443 return config;
444}
445
446
447#ifndef CONFIG_NO_CONFIG_WRITE
448
449static void write_str(FILE *f, const char *field, struct wpa_ssid *ssid)
450{
451 char *value = wpa_config_get(ssid, field);
452 if (value == NULL)
453 return;
454 fprintf(f, "\t%s=%s\n", field, value);
455 os_free(value);
456}
457
458
459static void write_int(FILE *f, const char *field, int value, int def)
460{
461 if (value == def)
462 return;
463 fprintf(f, "\t%s=%d\n", field, value);
464}
465
466
467static void write_bssid(FILE *f, struct wpa_ssid *ssid)
468{
469 char *value = wpa_config_get(ssid, "bssid");
470 if (value == NULL)
471 return;
472 fprintf(f, "\tbssid=%s\n", value);
473 os_free(value);
474}
475
476
477static void write_psk(FILE *f, struct wpa_ssid *ssid)
478{
479 char *value = wpa_config_get(ssid, "psk");
480 if (value == NULL)
481 return;
482 fprintf(f, "\tpsk=%s\n", value);
483 os_free(value);
484}
485
486
487static void write_proto(FILE *f, struct wpa_ssid *ssid)
488{
489 char *value;
490
491 if (ssid->proto == DEFAULT_PROTO)
492 return;
493
494 value = wpa_config_get(ssid, "proto");
495 if (value == NULL)
496 return;
497 if (value[0])
498 fprintf(f, "\tproto=%s\n", value);
499 os_free(value);
500}
501
502
503static void write_key_mgmt(FILE *f, struct wpa_ssid *ssid)
504{
505 char *value;
506
507 if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
508 return;
509
510 value = wpa_config_get(ssid, "key_mgmt");
511 if (value == NULL)
512 return;
513 if (value[0])
514 fprintf(f, "\tkey_mgmt=%s\n", value);
515 os_free(value);
516}
517
518
519static void write_pairwise(FILE *f, struct wpa_ssid *ssid)
520{
521 char *value;
522
523 if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
524 return;
525
526 value = wpa_config_get(ssid, "pairwise");
527 if (value == NULL)
528 return;
529 if (value[0])
530 fprintf(f, "\tpairwise=%s\n", value);
531 os_free(value);
532}
533
534
535static void write_group(FILE *f, struct wpa_ssid *ssid)
536{
537 char *value;
538
539 if (ssid->group_cipher == DEFAULT_GROUP)
540 return;
541
542 value = wpa_config_get(ssid, "group");
543 if (value == NULL)
544 return;
545 if (value[0])
546 fprintf(f, "\tgroup=%s\n", value);
547 os_free(value);
548}
549
550
551static void write_auth_alg(FILE *f, struct wpa_ssid *ssid)
552{
553 char *value;
554
555 if (ssid->auth_alg == 0)
556 return;
557
558 value = wpa_config_get(ssid, "auth_alg");
559 if (value == NULL)
560 return;
561 if (value[0])
562 fprintf(f, "\tauth_alg=%s\n", value);
563 os_free(value);
564}
565
566
567#ifdef IEEE8021X_EAPOL
568static void write_eap(FILE *f, struct wpa_ssid *ssid)
569{
570 char *value;
571
572 value = wpa_config_get(ssid, "eap");
573 if (value == NULL)
574 return;
575
576 if (value[0])
577 fprintf(f, "\teap=%s\n", value);
578 os_free(value);
579}
580#endif /* IEEE8021X_EAPOL */
581
582
583static void write_wep_key(FILE *f, int idx, struct wpa_ssid *ssid)
584{
585 char field[20], *value;
586 int res;
587
588 res = os_snprintf(field, sizeof(field), "wep_key%d", idx);
589 if (res < 0 || (size_t) res >= sizeof(field))
590 return;
591 value = wpa_config_get(ssid, field);
592 if (value) {
593 fprintf(f, "\t%s=%s\n", field, value);
594 os_free(value);
595 }
596}
597
598
fbdcfd57
JM		 599#ifdef CONFIG_P2P
600static void write_p2p_client_list(FILE *f, struct wpa_ssid *ssid)
601{
602 char *value = wpa_config_get(ssid, "p2p_client_list");
603 if (value == NULL)
604 return;
605 fprintf(f, "\tp2p_client_list=%s\n", value);
606 os_free(value);
607}
608#endif /* CONFIG_P2P */
609
610
6fc6879b
JM		 611static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid)
612{
613 int i;
614
615#define STR(t) write_str(f, #t, ssid)
616#define INT(t) write_int(f, #t, ssid->t, 0)
617#define INTe(t) write_int(f, #t, ssid->eap.t, 0)
618#define INT_DEF(t, def) write_int(f, #t, ssid->t, def)
619#define INT_DEFe(t, def) write_int(f, #t, ssid->eap.t, def)
620
621 STR(ssid);
622 INT(scan_ssid);
623 write_bssid(f, ssid);
624 write_psk(f, ssid);
625 write_proto(f, ssid);
626 write_key_mgmt(f, ssid);
4f920dc6 627 INT_DEF(bg_scan_period, DEFAULT_BG_SCAN_PERIOD);
6fc6879b
JM		 628 write_pairwise(f, ssid);
629 write_group(f, ssid);
630 write_auth_alg(f, ssid);
af548f53 631 STR(bgscan);
1aea2ca3 632 STR(autoscan);
6fc6879b
JM		 633#ifdef IEEE8021X_EAPOL
634 write_eap(f, ssid);
635 STR(identity);
636 STR(anonymous_identity);
637 STR(password);
638 STR(ca_cert);
639 STR(ca_path);
640 STR(client_cert);
641 STR(private_key);
642 STR(private_key_passwd);
643 STR(dh_file);
644 STR(subject_match);
645 STR(altsubject_match);
646 STR(ca_cert2);
647 STR(ca_path2);
648 STR(client_cert2);
649 STR(private_key2);
650 STR(private_key2_passwd);
651 STR(dh_file2);
652 STR(subject_match2);
653 STR(altsubject_match2);
654 STR(phase1);
655 STR(phase2);
656 STR(pcsc);
657 STR(pin);
658 STR(engine_id);
659 STR(key_id);
61ee0f71
DS		 660 STR(cert_id);
661 STR(ca_cert_id);
662 STR(key2_id);
98842d51
CL		 663 STR(pin2);
664 STR(engine2_id);
61ee0f71
DS		 665 STR(cert2_id);
666 STR(ca_cert2_id);
6fc6879b 667 INTe(engine);
98842d51 668 INTe(engine2);
6fc6879b
JM		 669 INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
670#endif /* IEEE8021X_EAPOL */
671 for (i = 0; i < 4; i++)
672 write_wep_key(f, i, ssid);
673 INT(wep_tx_keyidx);
674 INT(priority);
675#ifdef IEEE8021X_EAPOL
676 INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
677 STR(pac_file);
678 INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
679#endif /* IEEE8021X_EAPOL */
680 INT(mode);
bca06366 681 INT(frequency);
6e202021 682 write_int(f, "proactive_key_caching", ssid->proactive_key_caching, -1);
6fc6879b
JM		 683 INT(disabled);
684 INT(peerkey);
685#ifdef CONFIG_IEEE80211W
62d49803
JM		 686 write_int(f, "ieee80211w", ssid->ieee80211w,
687 MGMT_FRAME_PROTECTION_DEFAULT);
6fc6879b
JM		 688#endif /* CONFIG_IEEE80211W */
689 STR(id_str);
fbdcfd57
JM		 690#ifdef CONFIG_P2P
691 write_p2p_client_list(f, ssid);
692#endif /* CONFIG_P2P */
6fc6879b
JM		 693
694#undef STR
695#undef INT
696#undef INT_DEF
697}
698
699
f2c20751
JM		 700static void wpa_config_write_cred(FILE *f, struct wpa_cred *cred)
701{
1a712d2f
JM		 702 if (cred->priority)
703 fprintf(f, "\tpriority=%d\n", cred->priority);
d7b01abd
JM		 704 if (cred->pcsc)
705 fprintf(f, "\tpcsc=%d\n", cred->pcsc);
f2c20751
JM		 706 if (cred->realm)
707 fprintf(f, "\trealm=\"%s\"\n", cred->realm);
708 if (cred->username)
709 fprintf(f, "\tusername=\"%s\"\n", cred->username);
9aae09f1
JM		 710 if (cred->password && cred->ext_password)
711 fprintf(f, "\tpassword=ext:%s\n", cred->password);
712 else if (cred->password)
f2c20751
JM		 713 fprintf(f, "\tpassword=\"%s\"\n", cred->password);
714 if (cred->ca_cert)
715 fprintf(f, "\tca_cert=\"%s\"\n", cred->ca_cert);
9aae09f1
JM		 716 if (cred->client_cert)
717 fprintf(f, "\tclient_cert=\"%s\"\n", cred->client_cert);
718 if (cred->private_key)
719 fprintf(f, "\tprivate_key=\"%s\"\n", cred->private_key);
720 if (cred->private_key_passwd)
721 fprintf(f, "\tprivate_key_passwd=\"%s\"\n",
722 cred->private_key_passwd);
f2c20751
JM		 723 if (cred->imsi)
724 fprintf(f, "\timsi=\"%s\"\n", cred->imsi);
725 if (cred->milenage)
726 fprintf(f, "\tmilenage=\"%s\"\n", cred->milenage);
727 if (cred->domain)
728 fprintf(f, "\tdomain=\"%s\"\n", cred->domain);
9aae09f1
JM		 729 if (cred->roaming_consortium_len) {
730 size_t i;
731 fprintf(f, "\troaming_consortium=");
732 for (i = 0; i < cred->roaming_consortium_len; i++)
733 fprintf(f, "%02x", cred->roaming_consortium[i]);
734 fprintf(f, "\n");
735 }
736 if (cred->eap_method) {
737 const char *name;
738 name = eap_get_name(cred->eap_method[0].vendor,
739 cred->eap_method[0].method);
740 fprintf(f, "\teap=%s\n", name);
741 }
742 if (cred->phase1)
743 fprintf(f, "\tphase1=\"%s\"\n", cred->phase1);
744 if (cred->phase2)
745 fprintf(f, "\tphase2=\"%s\"\n", cred->phase2);
dbea8ac7
JM		 746 if (cred->excluded_ssid) {
747 size_t i, j;
748 for (i = 0; i < cred->num_excluded_ssid; i++) {
749 struct excluded_ssid *e = &cred->excluded_ssid[i];
750 fprintf(f, "\texcluded_ssid=");
751 for (j = 0; j < e->ssid_len; j++)
752 fprintf(f, "%02x", e->ssid[j]);
753 fprintf(f, "\n");
754 }
755 }
f2c20751
JM		 756}
757
758
6fc6879b
JM		 759#ifndef CONFIG_NO_CONFIG_BLOBS
760static int wpa_config_write_blob(FILE *f, struct wpa_config_blob *blob)
761{
762 unsigned char *encoded;
763
764 encoded = base64_encode(blob->data, blob->len, NULL);
765 if (encoded == NULL)
766 return -1;
767
768 fprintf(f, "\nblob-base64-%s={\n%s}\n", blob->name, encoded);
769 os_free(encoded);
770 return 0;
771}
772#endif /* CONFIG_NO_CONFIG_BLOBS */
773
774
3f2c8ba6
JM		 775static void write_global_bin(FILE *f, const char *field,
776 const struct wpabuf *val)
777{
778 size_t i;
779 const u8 *pos;
780
781 if (val == NULL)
782 return;
783
784 fprintf(f, "%s=", field);
785 pos = wpabuf_head(val);
786 for (i = 0; i < wpabuf_len(val); i++)
787 fprintf(f, "%02X", *pos++);
788 fprintf(f, "\n");
789}
790
791
6fc6879b
JM		 792static void wpa_config_write_global(FILE *f, struct wpa_config *config)
793{
794#ifdef CONFIG_CTRL_IFACE
795 if (config->ctrl_interface)
796 fprintf(f, "ctrl_interface=%s\n", config->ctrl_interface);
797 if (config->ctrl_interface_group)
798 fprintf(f, "ctrl_interface_group=%s\n",
799 config->ctrl_interface_group);
800#endif /* CONFIG_CTRL_IFACE */
801 if (config->eapol_version != DEFAULT_EAPOL_VERSION)
802 fprintf(f, "eapol_version=%d\n", config->eapol_version);
803 if (config->ap_scan != DEFAULT_AP_SCAN)
804 fprintf(f, "ap_scan=%d\n", config->ap_scan);
54ddd743
JM		 805 if (config->disable_scan_offload)
806 fprintf(f, "disable_scan_offload=%d\n",
807 config->disable_scan_offload);
6fc6879b
JM		 808 if (config->fast_reauth != DEFAULT_FAST_REAUTH)
809 fprintf(f, "fast_reauth=%d\n", config->fast_reauth);
6fc6879b
JM		 810 if (config->opensc_engine_path)
811 fprintf(f, "opensc_engine_path=%s\n",
812 config->opensc_engine_path);
813 if (config->pkcs11_engine_path)
814 fprintf(f, "pkcs11_engine_path=%s\n",
815 config->pkcs11_engine_path);
816 if (config->pkcs11_module_path)
817 fprintf(f, "pkcs11_module_path=%s\n",
818 config->pkcs11_module_path);
f64adcd7
JM		 819 if (config->pcsc_reader)
820 fprintf(f, "pcsc_reader=%s\n", config->pcsc_reader);
821 if (config->pcsc_pin)
822 fprintf(f, "pcsc_pin=%s\n", config->pcsc_pin);
6fc6879b
JM		 823 if (config->driver_param)
824 fprintf(f, "driver_param=%s\n", config->driver_param);
825 if (config->dot11RSNAConfigPMKLifetime)
826 fprintf(f, "dot11RSNAConfigPMKLifetime=%d\n",
827 config->dot11RSNAConfigPMKLifetime);
828 if (config->dot11RSNAConfigPMKReauthThreshold)
829 fprintf(f, "dot11RSNAConfigPMKReauthThreshold=%d\n",
830 config->dot11RSNAConfigPMKReauthThreshold);
831 if (config->dot11RSNAConfigSATimeout)
832 fprintf(f, "dot11RSNAConfigSATimeout=%d\n",
833 config->dot11RSNAConfigSATimeout);
834 if (config->update_config)
835 fprintf(f, "update_config=%d\n", config->update_config);
f855f923 836#ifdef CONFIG_WPS
9be09636 837 if (!is_nil_uuid(config->uuid)) {
f855f923
JM		 838 char buf[40];
839 uuid_bin2str(config->uuid, buf, sizeof(buf));
840 fprintf(f, "uuid=%s\n", buf);
841 }
3c0b7aa4
JM		 842 if (config->device_name)
843 fprintf(f, "device_name=%s\n", config->device_name);
844 if (config->manufacturer)
845 fprintf(f, "manufacturer=%s\n", config->manufacturer);
846 if (config->model_name)
847 fprintf(f, "model_name=%s\n", config->model_name);
848 if (config->model_number)
849 fprintf(f, "model_number=%s\n", config->model_number);
850 if (config->serial_number)
851 fprintf(f, "serial_number=%s\n", config->serial_number);
2f646b6e
JB		 852 {
853 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
854 buf = wps_dev_type_bin2str(config->device_type,
855 _buf, sizeof(_buf));
a769b094
JM		 856 if (os_strcmp(buf, "0-00000000-0") != 0)
857 fprintf(f, "device_type=%s\n", buf);
2f646b6e 858 }
9be09636 859 if (WPA_GET_BE32(config->os_version))
3c0b7aa4
JM		 860 fprintf(f, "os_version=%08x\n",
861 WPA_GET_BE32(config->os_version));
c0e4dd9e
JM		 862 if (config->config_methods)
863 fprintf(f, "config_methods=%s\n", config->config_methods);
47662164
JM		 864 if (config->wps_cred_processing)
865 fprintf(f, "wps_cred_processing=%d\n",
866 config->wps_cred_processing);
71dd3b78
AS		 867 if (config->wps_vendor_ext_m1) {
868 int i, len = wpabuf_len(config->wps_vendor_ext_m1);
869 const u8 *p = wpabuf_head_u8(config->wps_vendor_ext_m1);
870 if (len > 0) {
871 fprintf(f, "wps_vendor_ext_m1=");
872 for (i = 0; i < len; i++)
873 fprintf(f, "%02x", *p++);
874 fprintf(f, "\n");
875 }
876 }
f855f923 877#endif /* CONFIG_WPS */
e3768e7c
JM		 878#ifdef CONFIG_P2P
879 if (config->p2p_listen_reg_class)
880 fprintf(f, "p2p_listen_reg_class=%u\n",
881 config->p2p_listen_reg_class);
882 if (config->p2p_listen_channel)
883 fprintf(f, "p2p_listen_channel=%u\n",
884 config->p2p_listen_channel);
885 if (config->p2p_oper_reg_class)
886 fprintf(f, "p2p_oper_reg_class=%u\n",
887 config->p2p_oper_reg_class);
888 if (config->p2p_oper_channel)
889 fprintf(f, "p2p_oper_channel=%u\n", config->p2p_oper_channel);
890 if (config->p2p_go_intent != DEFAULT_P2P_GO_INTENT)
891 fprintf(f, "p2p_go_intent=%u\n", config->p2p_go_intent);
892 if (config->p2p_ssid_postfix)
893 fprintf(f, "p2p_ssid_postfix=%s\n", config->p2p_ssid_postfix);
894 if (config->persistent_reconnect)
895 fprintf(f, "persistent_reconnect=%u\n",
896 config->persistent_reconnect);
0f66abd2
SS		 897 if (config->p2p_intra_bss != DEFAULT_P2P_INTRA_BSS)
898 fprintf(f, "p2p_intra_bss=%u\n", config->p2p_intra_bss);
3071e181
JM		 899 if (config->p2p_group_idle)
900 fprintf(f, "p2p_group_idle=%u\n", config->p2p_group_idle);
21d996f7
JM		 901 if (config->p2p_pref_chan) {
902 unsigned int i;
903 fprintf(f, "p2p_pref_chan=");
904 for (i = 0; i < config->num_p2p_pref_chan; i++) {
905 fprintf(f, "%s%u:%u", i > 0 ? "," : "",
906 config->p2p_pref_chan[i].op_class,
907 config->p2p_pref_chan[i].chan);
908 }
909 fprintf(f, "\n");
910 }
a93a15bb
AN		 911 if (config->p2p_go_ht40)
912 fprintf(f, "p2p_go_ht40=%u\n", config->p2p_go_ht40);
7a808c7e
JM		 913 if (config->p2p_disabled)
914 fprintf(f, "p2p_disabled=%u\n", config->p2p_disabled);
d76cd41a
JM		 915 if (config->p2p_no_group_iface)
916 fprintf(f, "p2p_no_group_iface=%u\n",
917 config->p2p_no_group_iface);
e3768e7c 918#endif /* CONFIG_P2P */
315ce40a 919 if (config->country[0] && config->country[1]) {
6d158490 920 fprintf(f, "country=%c%c\n",
315ce40a 921 config->country[0], config->country[1]);
6d158490 922 }
c9c38b09
JM		 923 if (config->bss_max_count != DEFAULT_BSS_MAX_COUNT)
924 fprintf(f, "bss_max_count=%u\n", config->bss_max_count);
78633c37
SL		 925 if (config->bss_expiration_age != DEFAULT_BSS_EXPIRATION_AGE)
926 fprintf(f, "bss_expiration_age=%u\n",
927 config->bss_expiration_age);
928 if (config->bss_expiration_scan_count !=
929 DEFAULT_BSS_EXPIRATION_SCAN_COUNT)
930 fprintf(f, "bss_expiration_scan_count=%u\n",
931 config->bss_expiration_scan_count);
3812464c
JM		 932 if (config->filter_ssids)
933 fprintf(f, "filter_ssids=%d\n", config->filter_ssids);
dae608d5
JM		 934 if (config->max_num_sta != DEFAULT_MAX_NUM_STA)
935 fprintf(f, "max_num_sta=%u\n", config->max_num_sta);
0d7e5a3a
JB		 936 if (config->disassoc_low_ack)
937 fprintf(f, "disassoc_low_ack=%u\n", config->disassoc_low_ack);
66aadbd7
JK		 938#ifdef CONFIG_HS20
939 if (config->hs20)
940 fprintf(f, "hs20=1\n");
941#endif /* CONFIG_HS20 */
67e1b984 942#ifdef CONFIG_INTERWORKING
46ee0427
JM		 943 if (config->interworking)
944 fprintf(f, "interworking=%u\n", config->interworking);
945 if (!is_zero_ether_addr(config->hessid))
946 fprintf(f, "hessid=" MACSTR "\n", MAC2STR(config->hessid));
11540c0b
JM		 947 if (config->access_network_type != DEFAULT_ACCESS_NETWORK_TYPE)
948 fprintf(f, "access_network_type=%d\n",
949 config->access_network_type);
67e1b984 950#endif /* CONFIG_INTERWORKING */
1298c145
WJL		 951 if (config->pbc_in_m1)
952 fprintf(f, "pbc_in_m1=%u\n", config->pbc_in_m1);
042ec551
JM		 953 if (config->wps_nfc_pw_from_config) {
954 if (config->wps_nfc_dev_pw_id)
955 fprintf(f, "wps_nfc_dev_pw_id=%d\n",
956 config->wps_nfc_dev_pw_id);
957 write_global_bin(f, "wps_nfc_dh_pubkey",
958 config->wps_nfc_dh_pubkey);
959 write_global_bin(f, "wps_nfc_dh_privkey",
960 config->wps_nfc_dh_privkey);
961 write_global_bin(f, "wps_nfc_dev_pw", config->wps_nfc_dev_pw);
962 }
306ae225
JM		 963
964 if (config->ext_password_backend)
965 fprintf(f, "ext_password_backend=%s\n",
966 config->ext_password_backend);
462a7439
ES		 967 if (config->p2p_go_max_inactivity != DEFAULT_P2P_GO_MAX_INACTIVITY)
968 fprintf(f, "p2p_go_max_inactivity=%d\n",
969 config->p2p_go_max_inactivity);
4d5bda5f
JM		 970 if (config->auto_interworking)
971 fprintf(f, "auto_interworking=%d\n",
972 config->auto_interworking);
6e202021
JM		 973 if (config->okc)
974 fprintf(f, "okc=%d\n", config->okc);
62d49803
JM		 975 if (config->pmf)
976 fprintf(f, "pmf=%d\n", config->pmf);
625f202a
JM		 977
978 if (config->sae_groups) {
979 int i;
980 fprintf(f, "sae_groups=");
981 for (i = 0; config->sae_groups[i] >= 0; i++) {
982 fprintf(f, "%s%d", i > 0 ? " " : "",
983 config->sae_groups[i]);
984 }
985 fprintf(f, "\n");
986 }
6fc6879b
JM		 987}
988
989#endif /* CONFIG_NO_CONFIG_WRITE */
990
991
992int wpa_config_write(const char *name, struct wpa_config *config)
993{
994#ifndef CONFIG_NO_CONFIG_WRITE
995 FILE *f;
996 struct wpa_ssid *ssid;
f2c20751 997 struct wpa_cred *cred;
6fc6879b
JM		 998#ifndef CONFIG_NO_CONFIG_BLOBS
999 struct wpa_config_blob *blob;
1000#endif /* CONFIG_NO_CONFIG_BLOBS */
1001 int ret = 0;
1002
1003 wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
1004
1005 f = fopen(name, "w");
1006 if (f == NULL) {
1007 wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", name);
1008 return -1;
1009 }
1010
1011 wpa_config_write_global(f, config);
1012
f2c20751
JM		 1013 for (cred = config->cred; cred; cred = cred->next) {
1014 fprintf(f, "\ncred={\n");
1015 wpa_config_write_cred(f, cred);
1016 fprintf(f, "}\n");
1017 }
1018
6fc6879b 1019 for (ssid = config->ssid; ssid; ssid = ssid->next) {
2ff99b3c
JM		 1020 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS || ssid->temporary)
1021 continue; /* do not save temporary networks */
8e8280bd
JM		 1022 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set &&
1023 !ssid->passphrase)
1024 continue; /* do not save invalid network */
6fc6879b
JM		 1025 fprintf(f, "\nnetwork={\n");
1026 wpa_config_write_network(f, ssid);
1027 fprintf(f, "}\n");
1028 }
1029
1030#ifndef CONFIG_NO_CONFIG_BLOBS
1031 for (blob = config->blobs; blob; blob = blob->next) {
1032 ret = wpa_config_write_blob(f, blob);
1033 if (ret)
1034 break;
1035 }
1036#endif /* CONFIG_NO_CONFIG_BLOBS */
1037
1038 fclose(f);
1039
1040 wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully",
1041 name, ret ? "un" : "");
1042 return ret;
1043#else /* CONFIG_NO_CONFIG_WRITE */
1044 return -1;
1045#endif /* CONFIG_NO_CONFIG_WRITE */
1046}
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