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 #ifdef ANDROID
24 #include <sys/stat.h>
25 #endif
26
newline_terminated(const char * buf,size_t buflen)27 static int newline_terminated(const char *buf, size_t buflen)
28 {
29 size_t len = os_strlen(buf);
30 if (len == 0)
31 return 0;
32 if (len == buflen - 1 && buf[buflen - 1] != '\r' &&
33 buf[len - 1] != '\n')
34 return 0;
35 return 1;
36 }
37
38
skip_line_end(FILE * stream)39 static void skip_line_end(FILE *stream)
40 {
41 char buf[100];
42 while (fgets(buf, sizeof(buf), stream)) {
43 buf[sizeof(buf) - 1] = '\0';
44 if (newline_terminated(buf, sizeof(buf)))
45 return;
46 }
47 }
48
49
50 /**
51 * wpa_config_get_line - Read the next configuration file line
52 * @s: Buffer for the line
53 * @size: The buffer length
54 * @stream: File stream to read from
55 * @line: Pointer to a variable storing the file line number
56 * @_pos: Buffer for the pointer to the beginning of data on the text line or
57 * %NULL if not needed (returned value used instead)
58 * Returns: Pointer to the beginning of data on the text line or %NULL if no
59 * more text lines are available.
60 *
61 * This function reads the next non-empty line from the configuration file and
62 * removes comments. The returned string is guaranteed to be null-terminated.
63 */
wpa_config_get_line(char * s,int size,FILE * stream,int * line,char ** _pos)64 static char * wpa_config_get_line(char *s, int size, FILE *stream, int *line,
65 char **_pos)
66 {
67 char *pos, *end, *sstart;
68
69 while (fgets(s, size, stream)) {
70 (*line)++;
71 s[size - 1] = '\0';
72 if (!newline_terminated(s, size)) {
73 /*
74 * The line was truncated - skip rest of it to avoid
75 * confusing error messages.
76 */
77 wpa_printf(MSG_INFO, "Long line in configuration file "
78 "truncated");
79 skip_line_end(stream);
80 }
81 pos = s;
82
83 /* Skip white space from the beginning of line. */
84 while (*pos == ' ' || *pos == '\t' || *pos == '\r')
85 pos++;
86
87 /* Skip comment lines and empty lines */
88 if (*pos == '#' || *pos == '\n' || *pos == '\0')
89 continue;
90
91 /*
92 * Remove # comments unless they are within a double quoted
93 * string.
94 */
95 sstart = os_strchr(pos, '"');
96 if (sstart)
97 sstart = os_strrchr(sstart + 1, '"');
98 if (!sstart)
99 sstart = pos;
100 end = os_strchr(sstart, '#');
101 if (end)
102 *end-- = '\0';
103 else
104 end = pos + os_strlen(pos) - 1;
105
106 /* Remove trailing white space. */
107 while (end > pos &&
108 (*end == '\n' || *end == ' ' || *end == '\t' ||
109 *end == '\r'))
110 *end-- = '\0';
111
112 if (*pos == '\0')
113 continue;
114
115 if (_pos)
116 *_pos = pos;
117 return pos;
118 }
119
120 if (_pos)
121 *_pos = NULL;
122 return NULL;
123 }
124
125
wpa_config_validate_network(struct wpa_ssid * ssid,int line)126 static int wpa_config_validate_network(struct wpa_ssid *ssid, int line)
127 {
128 int errors = 0;
129
130 if (ssid->passphrase) {
131 if (ssid->psk_set) {
132 wpa_printf(MSG_ERROR, "Line %d: both PSK and "
133 "passphrase configured.", line);
134 errors++;
135 }
136 wpa_config_update_psk(ssid);
137 }
138
139 if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
140 !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
141 !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
142 /* Group cipher cannot be stronger than the pairwise cipher. */
143 wpa_printf(MSG_DEBUG, "Line %d: removed CCMP from group cipher"
144 " list since it was not allowed for pairwise "
145 "cipher", line);
146 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
147 }
148
149 return errors;
150 }
151
152
wpa_config_read_network(FILE * f,int * line,int id)153 static struct wpa_ssid * wpa_config_read_network(FILE *f, int *line, int id)
154 {
155 struct wpa_ssid *ssid;
156 int errors = 0, end = 0;
157 char buf[2000], *pos, *pos2;
158
159 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new network block",
160 *line);
161 ssid = os_zalloc(sizeof(*ssid));
162 if (ssid == NULL)
163 return NULL;
164 dl_list_init(&ssid->psk_list);
165 ssid->id = id;
166
167 wpa_config_set_network_defaults(ssid);
168
169 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
170 if (os_strcmp(pos, "}") == 0) {
171 end = 1;
172 break;
173 }
174
175 pos2 = os_strchr(pos, '=');
176 if (pos2 == NULL) {
177 wpa_printf(MSG_ERROR, "Line %d: Invalid SSID line "
178 "'%s'.", *line, pos);
179 errors++;
180 continue;
181 }
182
183 *pos2++ = '\0';
184 if (*pos2 == '"') {
185 if (os_strchr(pos2 + 1, '"') == NULL) {
186 wpa_printf(MSG_ERROR, "Line %d: invalid "
187 "quotation '%s'.", *line, pos2);
188 errors++;
189 continue;
190 }
191 }
192
193 if (wpa_config_set(ssid, pos, pos2, *line) < 0)
194 errors++;
195 }
196
197 if (!end) {
198 wpa_printf(MSG_ERROR, "Line %d: network block was not "
199 "terminated properly.", *line);
200 errors++;
201 }
202
203 errors += wpa_config_validate_network(ssid, *line);
204
205 if (errors) {
206 wpa_config_free_ssid(ssid);
207 ssid = NULL;
208 }
209
210 return ssid;
211 }
212
213
wpa_config_read_cred(FILE * f,int * line,int id)214 static struct wpa_cred * wpa_config_read_cred(FILE *f, int *line, int id)
215 {
216 struct wpa_cred *cred;
217 int errors = 0, end = 0;
218 char buf[256], *pos, *pos2;
219
220 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new cred block", *line);
221 cred = os_zalloc(sizeof(*cred));
222 if (cred == NULL)
223 return NULL;
224 cred->id = id;
225 cred->sim_num = DEFAULT_USER_SELECTED_SIM;
226
227 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
228 if (os_strcmp(pos, "}") == 0) {
229 end = 1;
230 break;
231 }
232
233 pos2 = os_strchr(pos, '=');
234 if (pos2 == NULL) {
235 wpa_printf(MSG_ERROR, "Line %d: Invalid cred line "
236 "'%s'.", *line, pos);
237 errors++;
238 continue;
239 }
240
241 *pos2++ = '\0';
242 if (*pos2 == '"') {
243 if (os_strchr(pos2 + 1, '"') == NULL) {
244 wpa_printf(MSG_ERROR, "Line %d: invalid "
245 "quotation '%s'.", *line, pos2);
246 errors++;
247 continue;
248 }
249 }
250
251 if (wpa_config_set_cred(cred, pos, pos2, *line) < 0)
252 errors++;
253 }
254
255 if (!end) {
256 wpa_printf(MSG_ERROR, "Line %d: cred block was not "
257 "terminated properly.", *line);
258 errors++;
259 }
260
261 if (errors) {
262 wpa_config_free_cred(cred);
263 cred = NULL;
264 }
265
266 return cred;
267 }
268
269
270 #ifndef CONFIG_NO_CONFIG_BLOBS
wpa_config_read_blob(FILE * f,int * line,const char * name)271 static struct wpa_config_blob * wpa_config_read_blob(FILE *f, int *line,
272 const char *name)
273 {
274 struct wpa_config_blob *blob;
275 char buf[256], *pos;
276 unsigned char *encoded = NULL, *nencoded;
277 int end = 0;
278 size_t encoded_len = 0, len;
279
280 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new named blob '%s'",
281 *line, name);
282
283 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
284 if (os_strcmp(pos, "}") == 0) {
285 end = 1;
286 break;
287 }
288
289 len = os_strlen(pos);
290 nencoded = os_realloc(encoded, encoded_len + len);
291 if (nencoded == NULL) {
292 wpa_printf(MSG_ERROR, "Line %d: not enough memory for "
293 "blob", *line);
294 os_free(encoded);
295 return NULL;
296 }
297 encoded = nencoded;
298 os_memcpy(encoded + encoded_len, pos, len);
299 encoded_len += len;
300 }
301
302 if (!end) {
303 wpa_printf(MSG_ERROR, "Line %d: blob was not terminated "
304 "properly", *line);
305 os_free(encoded);
306 return NULL;
307 }
308
309 blob = os_zalloc(sizeof(*blob));
310 if (blob == NULL) {
311 os_free(encoded);
312 return NULL;
313 }
314 blob->name = os_strdup(name);
315 blob->data = base64_decode(encoded, encoded_len, &blob->len);
316 os_free(encoded);
317
318 if (blob->name == NULL || blob->data == NULL) {
319 wpa_config_free_blob(blob);
320 return NULL;
321 }
322
323 return blob;
324 }
325
326
wpa_config_process_blob(struct wpa_config * config,FILE * f,int * line,char * bname)327 static int wpa_config_process_blob(struct wpa_config *config, FILE *f,
328 int *line, char *bname)
329 {
330 char *name_end;
331 struct wpa_config_blob *blob;
332
333 name_end = os_strchr(bname, '=');
334 if (name_end == NULL) {
335 wpa_printf(MSG_ERROR, "Line %d: no blob name terminator",
336 *line);
337 return -1;
338 }
339 *name_end = '\0';
340
341 blob = wpa_config_read_blob(f, line, bname);
342 if (blob == NULL) {
343 wpa_printf(MSG_ERROR, "Line %d: failed to read blob %s",
344 *line, bname);
345 return -1;
346 }
347 wpa_config_set_blob(config, blob);
348 return 0;
349 }
350 #endif /* CONFIG_NO_CONFIG_BLOBS */
351
352
wpa_config_read(const char * name,struct wpa_config * cfgp)353 struct wpa_config * wpa_config_read(const char *name, struct wpa_config *cfgp)
354 {
355 FILE *f;
356 char buf[512], *pos;
357 int errors = 0, line = 0;
358 struct wpa_ssid *ssid, *tail, *head;
359 struct wpa_cred *cred, *cred_tail, *cred_head;
360 struct wpa_config *config;
361 int id = 0;
362 int cred_id = 0;
363
364 if (name == NULL)
365 return NULL;
366 if (cfgp)
367 config = cfgp;
368 else
369 config = wpa_config_alloc_empty(NULL, NULL);
370 if (config == NULL) {
371 wpa_printf(MSG_ERROR, "Failed to allocate config file "
372 "structure");
373 return NULL;
374 }
375 tail = head = config->ssid;
376 while (tail && tail->next)
377 tail = tail->next;
378 cred_tail = cred_head = config->cred;
379 while (cred_tail && cred_tail->next)
380 cred_tail = cred_tail->next;
381
382 wpa_printf(MSG_DEBUG, "Reading configuration file '%s'", name);
383 f = fopen(name, "r");
384 if (f == NULL) {
385 wpa_printf(MSG_ERROR, "Failed to open config file '%s', "
386 "error: %s", name, strerror(errno));
387 os_free(config);
388 return NULL;
389 }
390
391 while (wpa_config_get_line(buf, sizeof(buf), f, &line, &pos)) {
392 if (os_strcmp(pos, "network={") == 0) {
393 ssid = wpa_config_read_network(f, &line, id++);
394 if (ssid == NULL) {
395 wpa_printf(MSG_ERROR, "Line %d: failed to "
396 "parse network block.", line);
397 errors++;
398 continue;
399 }
400 if (head == NULL) {
401 head = tail = ssid;
402 } else {
403 tail->next = ssid;
404 tail = ssid;
405 }
406 if (wpa_config_add_prio_network(config, ssid)) {
407 wpa_printf(MSG_ERROR, "Line %d: failed to add "
408 "network block to priority list.",
409 line);
410 errors++;
411 continue;
412 }
413 } else if (os_strcmp(pos, "cred={") == 0) {
414 cred = wpa_config_read_cred(f, &line, cred_id++);
415 if (cred == NULL) {
416 wpa_printf(MSG_ERROR, "Line %d: failed to "
417 "parse cred block.", line);
418 errors++;
419 continue;
420 }
421 if (cred_head == NULL) {
422 cred_head = cred_tail = cred;
423 } else {
424 cred_tail->next = cred;
425 cred_tail = cred;
426 }
427 #ifndef CONFIG_NO_CONFIG_BLOBS
428 } else if (os_strncmp(pos, "blob-base64-", 12) == 0) {
429 if (wpa_config_process_blob(config, f, &line, pos + 12)
430 < 0) {
431 wpa_printf(MSG_ERROR, "Line %d: failed to "
432 "process blob.", line);
433 errors++;
434 continue;
435 }
436 #endif /* CONFIG_NO_CONFIG_BLOBS */
437 } else if (wpa_config_process_global(config, pos, line) < 0) {
438 wpa_printf(MSG_ERROR, "Line %d: Invalid configuration "
439 "line '%s'.", line, pos);
440 errors++;
441 continue;
442 }
443 }
444
445 fclose(f);
446
447 config->ssid = head;
448 wpa_config_debug_dump_networks(config);
449 config->cred = cred_head;
450
451 #ifndef WPA_IGNORE_CONFIG_ERRORS
452 if (errors) {
453 wpa_config_free(config);
454 config = NULL;
455 head = NULL;
456 }
457 #endif /* WPA_IGNORE_CONFIG_ERRORS */
458
459 return config;
460 }
461
462
463 #ifndef CONFIG_NO_CONFIG_WRITE
464
write_str(FILE * f,const char * field,struct wpa_ssid * ssid)465 static void write_str(FILE *f, const char *field, struct wpa_ssid *ssid)
466 {
467 char *value = wpa_config_get(ssid, field);
468 if (value == NULL)
469 return;
470 fprintf(f, "\t%s=%s\n", field, value);
471 os_free(value);
472 }
473
474
write_int(FILE * f,const char * field,int value,int def)475 static void write_int(FILE *f, const char *field, int value, int def)
476 {
477 if (value == def)
478 return;
479 fprintf(f, "\t%s=%d\n", field, value);
480 }
481
482
write_bssid(FILE * f,struct wpa_ssid * ssid)483 static void write_bssid(FILE *f, struct wpa_ssid *ssid)
484 {
485 char *value = wpa_config_get(ssid, "bssid");
486 if (value == NULL)
487 return;
488 fprintf(f, "\tbssid=%s\n", value);
489 os_free(value);
490 }
491
492
write_psk(FILE * f,struct wpa_ssid * ssid)493 static void write_psk(FILE *f, struct wpa_ssid *ssid)
494 {
495 char *value = wpa_config_get(ssid, "psk");
496 if (value == NULL)
497 return;
498 fprintf(f, "\tpsk=%s\n", value);
499 os_free(value);
500 }
501
502
write_proto(FILE * f,struct wpa_ssid * ssid)503 static void write_proto(FILE *f, struct wpa_ssid *ssid)
504 {
505 char *value;
506
507 if (ssid->proto == DEFAULT_PROTO)
508 return;
509
510 value = wpa_config_get(ssid, "proto");
511 if (value == NULL)
512 return;
513 if (value[0])
514 fprintf(f, "\tproto=%s\n", value);
515 os_free(value);
516 }
517
518
write_key_mgmt(FILE * f,struct wpa_ssid * ssid)519 static void write_key_mgmt(FILE *f, struct wpa_ssid *ssid)
520 {
521 char *value;
522
523 if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
524 return;
525
526 value = wpa_config_get(ssid, "key_mgmt");
527 if (value == NULL)
528 return;
529 if (value[0])
530 fprintf(f, "\tkey_mgmt=%s\n", value);
531 os_free(value);
532 }
533
534
write_pairwise(FILE * f,struct wpa_ssid * ssid)535 static void write_pairwise(FILE *f, struct wpa_ssid *ssid)
536 {
537 char *value;
538
539 if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
540 return;
541
542 value = wpa_config_get(ssid, "pairwise");
543 if (value == NULL)
544 return;
545 if (value[0])
546 fprintf(f, "\tpairwise=%s\n", value);
547 os_free(value);
548 }
549
550
write_group(FILE * f,struct wpa_ssid * ssid)551 static void write_group(FILE *f, struct wpa_ssid *ssid)
552 {
553 char *value;
554
555 if (ssid->group_cipher == DEFAULT_GROUP)
556 return;
557
558 value = wpa_config_get(ssid, "group");
559 if (value == NULL)
560 return;
561 if (value[0])
562 fprintf(f, "\tgroup=%s\n", value);
563 os_free(value);
564 }
565
566
write_auth_alg(FILE * f,struct wpa_ssid * ssid)567 static void write_auth_alg(FILE *f, struct wpa_ssid *ssid)
568 {
569 char *value;
570
571 if (ssid->auth_alg == 0)
572 return;
573
574 value = wpa_config_get(ssid, "auth_alg");
575 if (value == NULL)
576 return;
577 if (value[0])
578 fprintf(f, "\tauth_alg=%s\n", value);
579 os_free(value);
580 }
581
582
583 #ifdef IEEE8021X_EAPOL
write_eap(FILE * f,struct wpa_ssid * ssid)584 static void write_eap(FILE *f, struct wpa_ssid *ssid)
585 {
586 char *value;
587
588 value = wpa_config_get(ssid, "eap");
589 if (value == NULL)
590 return;
591
592 if (value[0])
593 fprintf(f, "\teap=%s\n", value);
594 os_free(value);
595 }
596 #endif /* IEEE8021X_EAPOL */
597
598
write_wep_key(FILE * f,int idx,struct wpa_ssid * ssid)599 static void write_wep_key(FILE *f, int idx, struct wpa_ssid *ssid)
600 {
601 char field[20], *value;
602 int res;
603
604 res = os_snprintf(field, sizeof(field), "wep_key%d", idx);
605 if (res < 0 || (size_t) res >= sizeof(field))
606 return;
607 value = wpa_config_get(ssid, field);
608 if (value) {
609 fprintf(f, "\t%s=%s\n", field, value);
610 os_free(value);
611 }
612 }
613
614
615 #ifdef CONFIG_P2P
616
write_go_p2p_dev_addr(FILE * f,struct wpa_ssid * ssid)617 static void write_go_p2p_dev_addr(FILE *f, struct wpa_ssid *ssid)
618 {
619 char *value = wpa_config_get(ssid, "go_p2p_dev_addr");
620 if (value == NULL)
621 return;
622 fprintf(f, "\tgo_p2p_dev_addr=%s\n", value);
623 os_free(value);
624 }
625
write_p2p_client_list(FILE * f,struct wpa_ssid * ssid)626 static void write_p2p_client_list(FILE *f, struct wpa_ssid *ssid)
627 {
628 char *value = wpa_config_get(ssid, "p2p_client_list");
629 if (value == NULL)
630 return;
631 fprintf(f, "\tp2p_client_list=%s\n", value);
632 os_free(value);
633 }
634
635
write_psk_list(FILE * f,struct wpa_ssid * ssid)636 static void write_psk_list(FILE *f, struct wpa_ssid *ssid)
637 {
638 struct psk_list_entry *psk;
639 char hex[32 * 2 + 1];
640
641 dl_list_for_each(psk, &ssid->psk_list, struct psk_list_entry, list) {
642 wpa_snprintf_hex(hex, sizeof(hex), psk->psk, sizeof(psk->psk));
643 fprintf(f, "\tpsk_list=%s" MACSTR "-%s\n",
644 psk->p2p ? "P2P-" : "", MAC2STR(psk->addr), hex);
645 }
646 }
647
648 #endif /* CONFIG_P2P */
649
650
wpa_config_write_network(FILE * f,struct wpa_ssid * ssid)651 static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid)
652 {
653 int i;
654
655 #define STR(t) write_str(f, #t, ssid)
656 #define INT(t) write_int(f, #t, ssid->t, 0)
657 #define INTe(t) write_int(f, #t, ssid->eap.t, 0)
658 #define INT_DEF(t, def) write_int(f, #t, ssid->t, def)
659 #define INT_DEFe(t, def) write_int(f, #t, ssid->eap.t, def)
660
661 STR(ssid);
662 INT(scan_ssid);
663 write_bssid(f, ssid);
664 write_psk(f, ssid);
665 write_proto(f, ssid);
666 write_key_mgmt(f, ssid);
667 INT_DEF(bg_scan_period, DEFAULT_BG_SCAN_PERIOD);
668 write_pairwise(f, ssid);
669 write_group(f, ssid);
670 write_auth_alg(f, ssid);
671 STR(bgscan);
672 STR(autoscan);
673 STR(scan_freq);
674 #ifdef IEEE8021X_EAPOL
675 write_eap(f, ssid);
676 STR(identity);
677 STR(anonymous_identity);
678 STR(password);
679 STR(ca_cert);
680 STR(ca_path);
681 STR(client_cert);
682 STR(private_key);
683 STR(private_key_passwd);
684 STR(dh_file);
685 STR(subject_match);
686 STR(altsubject_match);
687 STR(domain_suffix_match);
688 STR(ca_cert2);
689 STR(ca_path2);
690 STR(client_cert2);
691 STR(private_key2);
692 STR(private_key2_passwd);
693 STR(dh_file2);
694 STR(subject_match2);
695 STR(altsubject_match2);
696 STR(domain_suffix_match2);
697 STR(phase1);
698 STR(phase2);
699 STR(pcsc);
700 STR(pin);
701 STR(engine_id);
702 STR(key_id);
703 STR(cert_id);
704 STR(ca_cert_id);
705 STR(key2_id);
706 STR(pin2);
707 STR(engine2_id);
708 STR(cert2_id);
709 STR(ca_cert2_id);
710 INTe(engine);
711 INTe(engine2);
712 INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
713 #endif /* IEEE8021X_EAPOL */
714 for (i = 0; i < 4; i++)
715 write_wep_key(f, i, ssid);
716 INT(wep_tx_keyidx);
717 INT(priority);
718 #ifdef IEEE8021X_EAPOL
719 INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
720 STR(pac_file);
721 INT_DEFe(fragment_size, DEFAULT_FRAGMENT_SIZE);
722 INTe(ocsp);
723 INT_DEFe(sim_num, DEFAULT_USER_SELECTED_SIM);
724 #endif /* IEEE8021X_EAPOL */
725 INT(mode);
726 INT(frequency);
727 write_int(f, "proactive_key_caching", ssid->proactive_key_caching, -1);
728 INT(disabled);
729 INT(peerkey);
730 #ifdef CONFIG_IEEE80211W
731 write_int(f, "ieee80211w", ssid->ieee80211w,
732 MGMT_FRAME_PROTECTION_DEFAULT);
733 #endif /* CONFIG_IEEE80211W */
734 STR(id_str);
735 #ifdef CONFIG_P2P
736 write_go_p2p_dev_addr(f, ssid);
737 write_p2p_client_list(f, ssid);
738 write_psk_list(f, ssid);
739 #endif /* CONFIG_P2P */
740 INT(dtim_period);
741 INT(beacon_int);
742 #ifdef CONFIG_MACSEC
743 INT(macsec_policy);
744 #endif /* CONFIG_MACSEC */
745 #ifdef CONFIG_HS20
746 INT(update_identifier);
747 #endif /* CONFIG_HS20 */
748 write_int(f, "mac_addr", ssid->mac_addr, -1);
749
750 #undef STR
751 #undef INT
752 #undef INT_DEF
753 }
754
755
wpa_config_write_cred(FILE * f,struct wpa_cred * cred)756 static void wpa_config_write_cred(FILE *f, struct wpa_cred *cred)
757 {
758 size_t i;
759
760 if (cred->priority)
761 fprintf(f, "\tpriority=%d\n", cred->priority);
762 if (cred->pcsc)
763 fprintf(f, "\tpcsc=%d\n", cred->pcsc);
764 if (cred->realm)
765 fprintf(f, "\trealm=\"%s\"\n", cred->realm);
766 if (cred->username)
767 fprintf(f, "\tusername=\"%s\"\n", cred->username);
768 if (cred->password && cred->ext_password)
769 fprintf(f, "\tpassword=ext:%s\n", cred->password);
770 else if (cred->password)
771 fprintf(f, "\tpassword=\"%s\"\n", cred->password);
772 if (cred->ca_cert)
773 fprintf(f, "\tca_cert=\"%s\"\n", cred->ca_cert);
774 if (cred->client_cert)
775 fprintf(f, "\tclient_cert=\"%s\"\n", cred->client_cert);
776 if (cred->private_key)
777 fprintf(f, "\tprivate_key=\"%s\"\n", cred->private_key);
778 if (cred->private_key_passwd)
779 fprintf(f, "\tprivate_key_passwd=\"%s\"\n",
780 cred->private_key_passwd);
781 if (cred->imsi)
782 fprintf(f, "\timsi=\"%s\"\n", cred->imsi);
783 if (cred->milenage)
784 fprintf(f, "\tmilenage=\"%s\"\n", cred->milenage);
785 for (i = 0; i < cred->num_domain; i++)
786 fprintf(f, "\tdomain=\"%s\"\n", cred->domain[i]);
787 if (cred->domain_suffix_match)
788 fprintf(f, "\tdomain_suffix_match=\"%s\"\n",
789 cred->domain_suffix_match);
790 if (cred->roaming_consortium_len) {
791 fprintf(f, "\troaming_consortium=");
792 for (i = 0; i < cred->roaming_consortium_len; i++)
793 fprintf(f, "%02x", cred->roaming_consortium[i]);
794 fprintf(f, "\n");
795 }
796 if (cred->eap_method) {
797 const char *name;
798 name = eap_get_name(cred->eap_method[0].vendor,
799 cred->eap_method[0].method);
800 if (name)
801 fprintf(f, "\teap=%s\n", name);
802 }
803 if (cred->phase1)
804 fprintf(f, "\tphase1=\"%s\"\n", cred->phase1);
805 if (cred->phase2)
806 fprintf(f, "\tphase2=\"%s\"\n", cred->phase2);
807 if (cred->excluded_ssid) {
808 size_t j;
809 for (i = 0; i < cred->num_excluded_ssid; i++) {
810 struct excluded_ssid *e = &cred->excluded_ssid[i];
811 fprintf(f, "\texcluded_ssid=");
812 for (j = 0; j < e->ssid_len; j++)
813 fprintf(f, "%02x", e->ssid[j]);
814 fprintf(f, "\n");
815 }
816 }
817 if (cred->roaming_partner) {
818 for (i = 0; i < cred->num_roaming_partner; i++) {
819 struct roaming_partner *p = &cred->roaming_partner[i];
820 fprintf(f, "\troaming_partner=\"%s,%d,%u,%s\"\n",
821 p->fqdn, p->exact_match, p->priority,
822 p->country);
823 }
824 }
825 if (cred->update_identifier)
826 fprintf(f, "\tupdate_identifier=%d\n", cred->update_identifier);
827
828 if (cred->provisioning_sp)
829 fprintf(f, "\tprovisioning_sp=\"%s\"\n", cred->provisioning_sp);
830 if (cred->sp_priority)
831 fprintf(f, "\tsp_priority=%d\n", cred->sp_priority);
832
833 if (cred->min_dl_bandwidth_home)
834 fprintf(f, "\tmin_dl_bandwidth_home=%u\n",
835 cred->min_dl_bandwidth_home);
836 if (cred->min_ul_bandwidth_home)
837 fprintf(f, "\tmin_ul_bandwidth_home=%u\n",
838 cred->min_ul_bandwidth_home);
839 if (cred->min_dl_bandwidth_roaming)
840 fprintf(f, "\tmin_dl_bandwidth_roaming=%u\n",
841 cred->min_dl_bandwidth_roaming);
842 if (cred->min_ul_bandwidth_roaming)
843 fprintf(f, "\tmin_ul_bandwidth_roaming=%u\n",
844 cred->min_ul_bandwidth_roaming);
845
846 if (cred->max_bss_load)
847 fprintf(f, "\tmax_bss_load=%u\n",
848 cred->max_bss_load);
849
850 if (cred->ocsp)
851 fprintf(f, "\tocsp=%d\n", cred->ocsp);
852
853 if (cred->num_req_conn_capab) {
854 for (i = 0; i < cred->num_req_conn_capab; i++) {
855 int *ports;
856
857 fprintf(f, "\treq_conn_capab=%u",
858 cred->req_conn_capab_proto[i]);
859 ports = cred->req_conn_capab_port[i];
860 if (ports) {
861 int j;
862 for (j = 0; ports[j] != -1; j++) {
863 fprintf(f, "%s%d", j > 0 ? "," : ":",
864 ports[j]);
865 }
866 }
867 fprintf(f, "\n");
868 }
869 }
870
871 if (cred->required_roaming_consortium_len) {
872 fprintf(f, "\trequired_roaming_consortium=");
873 for (i = 0; i < cred->required_roaming_consortium_len; i++)
874 fprintf(f, "%02x",
875 cred->required_roaming_consortium[i]);
876 fprintf(f, "\n");
877 }
878
879 if (cred->sim_num != DEFAULT_USER_SELECTED_SIM)
880 fprintf(f, "\tsim_num=%d\n", cred->sim_num);
881 }
882
883
884 #ifndef CONFIG_NO_CONFIG_BLOBS
wpa_config_write_blob(FILE * f,struct wpa_config_blob * blob)885 static int wpa_config_write_blob(FILE *f, struct wpa_config_blob *blob)
886 {
887 unsigned char *encoded;
888
889 encoded = base64_encode(blob->data, blob->len, NULL);
890 if (encoded == NULL)
891 return -1;
892
893 fprintf(f, "\nblob-base64-%s={\n%s}\n", blob->name, encoded);
894 os_free(encoded);
895 return 0;
896 }
897 #endif /* CONFIG_NO_CONFIG_BLOBS */
898
899
write_global_bin(FILE * f,const char * field,const struct wpabuf * val)900 static void write_global_bin(FILE *f, const char *field,
901 const struct wpabuf *val)
902 {
903 size_t i;
904 const u8 *pos;
905
906 if (val == NULL)
907 return;
908
909 fprintf(f, "%s=", field);
910 pos = wpabuf_head(val);
911 for (i = 0; i < wpabuf_len(val); i++)
912 fprintf(f, "%02X", *pos++);
913 fprintf(f, "\n");
914 }
915
916
wpa_config_write_global(FILE * f,struct wpa_config * config)917 static void wpa_config_write_global(FILE *f, struct wpa_config *config)
918 {
919 #ifdef CONFIG_CTRL_IFACE
920 if (config->ctrl_interface)
921 fprintf(f, "ctrl_interface=%s\n", config->ctrl_interface);
922 if (config->ctrl_interface_group)
923 fprintf(f, "ctrl_interface_group=%s\n",
924 config->ctrl_interface_group);
925 #endif /* CONFIG_CTRL_IFACE */
926 if (config->eapol_version != DEFAULT_EAPOL_VERSION)
927 fprintf(f, "eapol_version=%d\n", config->eapol_version);
928 if (config->ap_scan != DEFAULT_AP_SCAN)
929 fprintf(f, "ap_scan=%d\n", config->ap_scan);
930 if (config->disable_scan_offload)
931 fprintf(f, "disable_scan_offload=%d\n",
932 config->disable_scan_offload);
933 if (config->fast_reauth != DEFAULT_FAST_REAUTH)
934 fprintf(f, "fast_reauth=%d\n", config->fast_reauth);
935 if (config->opensc_engine_path)
936 fprintf(f, "opensc_engine_path=%s\n",
937 config->opensc_engine_path);
938 if (config->pkcs11_engine_path)
939 fprintf(f, "pkcs11_engine_path=%s\n",
940 config->pkcs11_engine_path);
941 if (config->pkcs11_module_path)
942 fprintf(f, "pkcs11_module_path=%s\n",
943 config->pkcs11_module_path);
944 if (config->pcsc_reader)
945 fprintf(f, "pcsc_reader=%s\n", config->pcsc_reader);
946 if (config->pcsc_pin)
947 fprintf(f, "pcsc_pin=%s\n", config->pcsc_pin);
948 if (config->driver_param)
949 fprintf(f, "driver_param=%s\n", config->driver_param);
950 if (config->dot11RSNAConfigPMKLifetime)
951 fprintf(f, "dot11RSNAConfigPMKLifetime=%d\n",
952 config->dot11RSNAConfigPMKLifetime);
953 if (config->dot11RSNAConfigPMKReauthThreshold)
954 fprintf(f, "dot11RSNAConfigPMKReauthThreshold=%d\n",
955 config->dot11RSNAConfigPMKReauthThreshold);
956 if (config->dot11RSNAConfigSATimeout)
957 fprintf(f, "dot11RSNAConfigSATimeout=%d\n",
958 config->dot11RSNAConfigSATimeout);
959 if (config->update_config)
960 fprintf(f, "update_config=%d\n", config->update_config);
961 #ifdef CONFIG_WPS
962 if (!is_nil_uuid(config->uuid)) {
963 char buf[40];
964 uuid_bin2str(config->uuid, buf, sizeof(buf));
965 fprintf(f, "uuid=%s\n", buf);
966 }
967 if (config->device_name)
968 fprintf(f, "device_name=%s\n", config->device_name);
969 if (config->manufacturer)
970 fprintf(f, "manufacturer=%s\n", config->manufacturer);
971 if (config->model_name)
972 fprintf(f, "model_name=%s\n", config->model_name);
973 if (config->model_number)
974 fprintf(f, "model_number=%s\n", config->model_number);
975 if (config->serial_number)
976 fprintf(f, "serial_number=%s\n", config->serial_number);
977 {
978 char _buf[WPS_DEV_TYPE_BUFSIZE], *buf;
979 buf = wps_dev_type_bin2str(config->device_type,
980 _buf, sizeof(_buf));
981 if (os_strcmp(buf, "0-00000000-0") != 0)
982 fprintf(f, "device_type=%s\n", buf);
983 }
984 if (WPA_GET_BE32(config->os_version))
985 fprintf(f, "os_version=%08x\n",
986 WPA_GET_BE32(config->os_version));
987 if (config->config_methods)
988 fprintf(f, "config_methods=%s\n", config->config_methods);
989 if (config->wps_cred_processing)
990 fprintf(f, "wps_cred_processing=%d\n",
991 config->wps_cred_processing);
992 if (config->wps_vendor_ext_m1) {
993 int i, len = wpabuf_len(config->wps_vendor_ext_m1);
994 const u8 *p = wpabuf_head_u8(config->wps_vendor_ext_m1);
995 if (len > 0) {
996 fprintf(f, "wps_vendor_ext_m1=");
997 for (i = 0; i < len; i++)
998 fprintf(f, "%02x", *p++);
999 fprintf(f, "\n");
1000 }
1001 }
1002 #endif /* CONFIG_WPS */
1003 #ifdef CONFIG_P2P
1004 if (config->p2p_listen_reg_class)
1005 fprintf(f, "p2p_listen_reg_class=%u\n",
1006 config->p2p_listen_reg_class);
1007 if (config->p2p_listen_channel)
1008 fprintf(f, "p2p_listen_channel=%u\n",
1009 config->p2p_listen_channel);
1010 if (config->p2p_oper_reg_class)
1011 fprintf(f, "p2p_oper_reg_class=%u\n",
1012 config->p2p_oper_reg_class);
1013 if (config->p2p_oper_channel)
1014 fprintf(f, "p2p_oper_channel=%u\n", config->p2p_oper_channel);
1015 if (config->p2p_go_intent != DEFAULT_P2P_GO_INTENT)
1016 fprintf(f, "p2p_go_intent=%u\n", config->p2p_go_intent);
1017 if (config->p2p_ssid_postfix)
1018 fprintf(f, "p2p_ssid_postfix=%s\n", config->p2p_ssid_postfix);
1019 if (config->persistent_reconnect)
1020 fprintf(f, "persistent_reconnect=%u\n",
1021 config->persistent_reconnect);
1022 if (config->p2p_intra_bss != DEFAULT_P2P_INTRA_BSS)
1023 fprintf(f, "p2p_intra_bss=%u\n", config->p2p_intra_bss);
1024 if (config->p2p_group_idle)
1025 fprintf(f, "p2p_group_idle=%u\n", config->p2p_group_idle);
1026 if (config->p2p_passphrase_len)
1027 fprintf(f, "p2p_passphrase_len=%u\n",
1028 config->p2p_passphrase_len);
1029 if (config->p2p_pref_chan) {
1030 unsigned int i;
1031 fprintf(f, "p2p_pref_chan=");
1032 for (i = 0; i < config->num_p2p_pref_chan; i++) {
1033 fprintf(f, "%s%u:%u", i > 0 ? "," : "",
1034 config->p2p_pref_chan[i].op_class,
1035 config->p2p_pref_chan[i].chan);
1036 }
1037 fprintf(f, "\n");
1038 }
1039 if (config->p2p_no_go_freq.num) {
1040 char *val = freq_range_list_str(&config->p2p_no_go_freq);
1041 if (val) {
1042 fprintf(f, "p2p_no_go_freq=%s\n", val);
1043 os_free(val);
1044 }
1045 }
1046 if (config->p2p_add_cli_chan)
1047 fprintf(f, "p2p_add_cli_chan=%d\n", config->p2p_add_cli_chan);
1048 if (config->p2p_optimize_listen_chan !=
1049 DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN)
1050 fprintf(f, "p2p_optimize_listen_chan=%d\n",
1051 config->p2p_optimize_listen_chan);
1052 if (config->p2p_go_ht40)
1053 fprintf(f, "p2p_go_ht40=%u\n", config->p2p_go_ht40);
1054 if (config->p2p_go_vht)
1055 fprintf(f, "p2p_go_vht=%u\n", config->p2p_go_vht);
1056 if (config->p2p_disabled)
1057 fprintf(f, "p2p_disabled=%u\n", config->p2p_disabled);
1058 if (config->p2p_no_group_iface)
1059 fprintf(f, "p2p_no_group_iface=%u\n",
1060 config->p2p_no_group_iface);
1061 if (config->p2p_ignore_shared_freq)
1062 fprintf(f, "p2p_ignore_shared_freq=%u\n",
1063 config->p2p_ignore_shared_freq);
1064 #endif /* CONFIG_P2P */
1065 if (config->country[0] && config->country[1]) {
1066 fprintf(f, "country=%c%c\n",
1067 config->country[0], config->country[1]);
1068 }
1069 if (config->bss_max_count != DEFAULT_BSS_MAX_COUNT)
1070 fprintf(f, "bss_max_count=%u\n", config->bss_max_count);
1071 if (config->bss_expiration_age != DEFAULT_BSS_EXPIRATION_AGE)
1072 fprintf(f, "bss_expiration_age=%u\n",
1073 config->bss_expiration_age);
1074 if (config->bss_expiration_scan_count !=
1075 DEFAULT_BSS_EXPIRATION_SCAN_COUNT)
1076 fprintf(f, "bss_expiration_scan_count=%u\n",
1077 config->bss_expiration_scan_count);
1078 if (config->filter_ssids)
1079 fprintf(f, "filter_ssids=%d\n", config->filter_ssids);
1080 if (config->max_num_sta != DEFAULT_MAX_NUM_STA)
1081 fprintf(f, "max_num_sta=%u\n", config->max_num_sta);
1082 if (config->disassoc_low_ack)
1083 fprintf(f, "disassoc_low_ack=%u\n", config->disassoc_low_ack);
1084 #ifdef CONFIG_HS20
1085 if (config->hs20)
1086 fprintf(f, "hs20=1\n");
1087 #endif /* CONFIG_HS20 */
1088 #ifdef CONFIG_INTERWORKING
1089 if (config->interworking)
1090 fprintf(f, "interworking=%u\n", config->interworking);
1091 if (!is_zero_ether_addr(config->hessid))
1092 fprintf(f, "hessid=" MACSTR "\n", MAC2STR(config->hessid));
1093 if (config->access_network_type != DEFAULT_ACCESS_NETWORK_TYPE)
1094 fprintf(f, "access_network_type=%d\n",
1095 config->access_network_type);
1096 #endif /* CONFIG_INTERWORKING */
1097 if (config->pbc_in_m1)
1098 fprintf(f, "pbc_in_m1=%u\n", config->pbc_in_m1);
1099 if (config->wps_nfc_pw_from_config) {
1100 if (config->wps_nfc_dev_pw_id)
1101 fprintf(f, "wps_nfc_dev_pw_id=%d\n",
1102 config->wps_nfc_dev_pw_id);
1103 write_global_bin(f, "wps_nfc_dh_pubkey",
1104 config->wps_nfc_dh_pubkey);
1105 write_global_bin(f, "wps_nfc_dh_privkey",
1106 config->wps_nfc_dh_privkey);
1107 write_global_bin(f, "wps_nfc_dev_pw", config->wps_nfc_dev_pw);
1108 }
1109
1110 if (config->ext_password_backend)
1111 fprintf(f, "ext_password_backend=%s\n",
1112 config->ext_password_backend);
1113 if (config->p2p_go_max_inactivity != DEFAULT_P2P_GO_MAX_INACTIVITY)
1114 fprintf(f, "p2p_go_max_inactivity=%d\n",
1115 config->p2p_go_max_inactivity);
1116 if (config->auto_interworking)
1117 fprintf(f, "auto_interworking=%d\n",
1118 config->auto_interworking);
1119 if (config->okc)
1120 fprintf(f, "okc=%d\n", config->okc);
1121 if (config->pmf)
1122 fprintf(f, "pmf=%d\n", config->pmf);
1123 if (config->dtim_period)
1124 fprintf(f, "dtim_period=%d\n", config->dtim_period);
1125 if (config->beacon_int)
1126 fprintf(f, "beacon_int=%d\n", config->beacon_int);
1127
1128 if (config->sae_groups) {
1129 int i;
1130 fprintf(f, "sae_groups=");
1131 for (i = 0; config->sae_groups[i] >= 0; i++) {
1132 fprintf(f, "%s%d", i > 0 ? " " : "",
1133 config->sae_groups[i]);
1134 }
1135 fprintf(f, "\n");
1136 }
1137
1138 if (config->ap_vendor_elements) {
1139 int i, len = wpabuf_len(config->ap_vendor_elements);
1140 const u8 *p = wpabuf_head_u8(config->ap_vendor_elements);
1141 if (len > 0) {
1142 fprintf(f, "ap_vendor_elements=");
1143 for (i = 0; i < len; i++)
1144 fprintf(f, "%02x", *p++);
1145 fprintf(f, "\n");
1146 }
1147 }
1148
1149 if (config->ignore_old_scan_res)
1150 fprintf(f, "ignore_old_scan_res=%d\n",
1151 config->ignore_old_scan_res);
1152
1153 if (config->freq_list && config->freq_list[0]) {
1154 int i;
1155 fprintf(f, "freq_list=");
1156 for (i = 0; config->freq_list[i]; i++) {
1157 fprintf(f, "%s%u", i > 0 ? " " : "",
1158 config->freq_list[i]);
1159 }
1160 fprintf(f, "\n");
1161 }
1162 if (config->scan_cur_freq != DEFAULT_SCAN_CUR_FREQ)
1163 fprintf(f, "scan_cur_freq=%d\n", config->scan_cur_freq);
1164
1165 if (config->sched_scan_interval)
1166 fprintf(f, "sched_scan_interval=%u\n",
1167 config->sched_scan_interval);
1168
1169 if (config->external_sim)
1170 fprintf(f, "external_sim=%d\n", config->external_sim);
1171
1172 if (config->tdls_external_control)
1173 fprintf(f, "tdls_external_control=%d\n",
1174 config->tdls_external_control);
1175
1176 if (config->wowlan_triggers)
1177 fprintf(f, "wowlan_triggers=%s\n",
1178 config->wowlan_triggers);
1179
1180 if (config->bgscan)
1181 fprintf(f, "bgscan=\"%s\"\n", config->bgscan);
1182
1183 if (config->p2p_search_delay != DEFAULT_P2P_SEARCH_DELAY)
1184 fprintf(f, "p2p_search_delay=%u\n",
1185 config->p2p_search_delay);
1186
1187 if (config->mac_addr)
1188 fprintf(f, "mac_addr=%d\n", config->mac_addr);
1189
1190 if (config->rand_addr_lifetime != DEFAULT_RAND_ADDR_LIFETIME)
1191 fprintf(f, "rand_addr_lifetime=%u\n",
1192 config->rand_addr_lifetime);
1193
1194 if (config->preassoc_mac_addr)
1195 fprintf(f, "preassoc_mac_addr=%d\n", config->preassoc_mac_addr);
1196 }
1197
1198 #endif /* CONFIG_NO_CONFIG_WRITE */
1199
1200
wpa_config_write(const char * name,struct wpa_config * config)1201 int wpa_config_write(const char *name, struct wpa_config *config)
1202 {
1203 #ifndef CONFIG_NO_CONFIG_WRITE
1204 FILE *f;
1205 struct wpa_ssid *ssid;
1206 struct wpa_cred *cred;
1207 #ifndef CONFIG_NO_CONFIG_BLOBS
1208 struct wpa_config_blob *blob;
1209 #endif /* CONFIG_NO_CONFIG_BLOBS */
1210 int ret = 0;
1211 int tmp_len = os_strlen(name) + 5; /* allow space for .tmp suffix */
1212 char *tmp_name = os_malloc(tmp_len);
1213
1214 if (tmp_name == NULL)
1215 tmp_name = (char *)name;
1216 else
1217 os_snprintf(tmp_name, tmp_len, "%s.tmp", name);
1218
1219 wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", tmp_name);
1220
1221 f = fopen(tmp_name, "w");
1222 if (f == NULL) {
1223 wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", tmp_name);
1224 if (tmp_name != name)
1225 os_free(tmp_name);
1226 return -1;
1227 }
1228
1229 wpa_config_write_global(f, config);
1230
1231 for (cred = config->cred; cred; cred = cred->next) {
1232 if (cred->temporary)
1233 continue;
1234 fprintf(f, "\ncred={\n");
1235 wpa_config_write_cred(f, cred);
1236 fprintf(f, "}\n");
1237 }
1238
1239 for (ssid = config->ssid; ssid; ssid = ssid->next) {
1240 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS || ssid->temporary)
1241 continue; /* do not save temporary networks */
1242 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set &&
1243 !ssid->passphrase)
1244 continue; /* do not save invalid network */
1245 fprintf(f, "\nnetwork={\n");
1246 wpa_config_write_network(f, ssid);
1247 fprintf(f, "}\n");
1248 }
1249
1250 #ifndef CONFIG_NO_CONFIG_BLOBS
1251 for (blob = config->blobs; blob; blob = blob->next) {
1252 ret = wpa_config_write_blob(f, blob);
1253 if (ret)
1254 break;
1255 }
1256 #endif /* CONFIG_NO_CONFIG_BLOBS */
1257
1258 fclose(f);
1259
1260 if (tmp_name != name) {
1261 int chmod_ret = 0;
1262 #ifdef ANDROID
1263 chmod_ret = chmod(tmp_name, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
1264 #endif
1265 if (chmod_ret != 0 || rename(tmp_name, name) != 0)
1266 ret = -1;
1267
1268 os_free(tmp_name);
1269 }
1270
1271 wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully",
1272 name, ret ? "un" : "");
1273 return ret;
1274 #else /* CONFIG_NO_CONFIG_WRITE */
1275 return -1;
1276 #endif /* CONFIG_NO_CONFIG_WRITE */
1277 }
1278