1 /*
2 * WPA Supplicant / Configuration backend: text file
3 * Copyright (c) 2003-2006, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 *
14 * This file implements a configuration backend for text files. All the
15 * configuration information is stored in a text file that uses a format
16 * described in the sample configuration file, wpa_supplicant.conf.
17 */
18
19 #include "includes.h"
20
21 #include "common.h"
22 #include "config.h"
23 #include "base64.h"
24 #include "eap_methods.h"
25
26 #include <sys/stat.h>
27
28
29 /**
30 * wpa_config_get_line - Read the next configuration file line
31 * @s: Buffer for the line
32 * @size: The buffer length
33 * @stream: File stream to read from
34 * @line: Pointer to a variable storing the file line number
35 * @_pos: Buffer for the pointer to the beginning of data on the text line or
36 * %NULL if not needed (returned value used instead)
37 * Returns: Pointer to the beginning of data on the text line or %NULL if no
38 * more text lines are available.
39 *
40 * This function reads the next non-empty line from the configuration file and
41 * removes comments. The returned string is guaranteed to be null-terminated.
42 */
wpa_config_get_line(char * s,int size,FILE * stream,int * line,char ** _pos)43 static char * wpa_config_get_line(char *s, int size, FILE *stream, int *line,
44 char **_pos)
45 {
46 char *pos, *end, *sstart;
47
48 while (fgets(s, size, stream)) {
49 (*line)++;
50 s[size - 1] = '\0';
51 pos = s;
52
53 /* Skip white space from the beginning of line. */
54 while (*pos == ' ' || *pos == '\t' || *pos == '\r')
55 pos++;
56
57 /* Skip comment lines and empty lines */
58 if (*pos == '#' || *pos == '\n' || *pos == '\0')
59 continue;
60
61 /*
62 * Remove # comments unless they are within a double quoted
63 * string.
64 */
65 sstart = os_strchr(pos, '"');
66 if (sstart)
67 sstart = os_strrchr(sstart + 1, '"');
68 if (!sstart)
69 sstart = pos;
70 end = os_strchr(sstart, '#');
71 if (end)
72 *end-- = '\0';
73 else
74 end = pos + os_strlen(pos) - 1;
75
76 /* Remove trailing white space. */
77 while (end > pos &&
78 (*end == '\n' || *end == ' ' || *end == '\t' ||
79 *end == '\r'))
80 *end-- = '\0';
81
82 if (*pos == '\0')
83 continue;
84
85 if (_pos)
86 *_pos = pos;
87 return pos;
88 }
89
90 if (_pos)
91 *_pos = NULL;
92 return NULL;
93 }
94
95
wpa_config_validate_network(struct wpa_ssid * ssid,int line)96 static int wpa_config_validate_network(struct wpa_ssid *ssid, int line)
97 {
98 int errors = 0;
99
100 if (ssid->passphrase) {
101 if (ssid->psk_set) {
102 wpa_printf(MSG_ERROR, "Line %d: both PSK and "
103 "passphrase configured.", line);
104 errors++;
105 }
106 wpa_config_update_psk(ssid);
107 }
108
109 if ((ssid->key_mgmt & WPA_KEY_MGMT_PSK) && !ssid->psk_set) {
110 wpa_printf(MSG_ERROR, "Line %d: WPA-PSK accepted for key "
111 "management, but no PSK configured.", line);
112 errors++;
113 }
114
115 if ((ssid->group_cipher & WPA_CIPHER_CCMP) &&
116 !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
117 !(ssid->pairwise_cipher & WPA_CIPHER_NONE)) {
118 /* Group cipher cannot be stronger than the pairwise cipher. */
119 wpa_printf(MSG_DEBUG, "Line %d: removed CCMP from group cipher"
120 " list since it was not allowed for pairwise "
121 "cipher", line);
122 ssid->group_cipher &= ~WPA_CIPHER_CCMP;
123 }
124
125 return errors;
126 }
127
128
wpa_config_read_network(FILE * f,int * line,int id)129 static struct wpa_ssid * wpa_config_read_network(FILE *f, int *line, int id)
130 {
131 struct wpa_ssid *ssid;
132 int errors = 0, end = 0;
133 char buf[256], *pos, *pos2;
134
135 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new network block",
136 *line);
137 ssid = os_zalloc(sizeof(*ssid));
138 if (ssid == NULL)
139 return NULL;
140 ssid->id = id;
141
142 wpa_config_set_network_defaults(ssid);
143
144 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
145 if (os_strcmp(pos, "}") == 0) {
146 end = 1;
147 break;
148 }
149
150 pos2 = os_strchr(pos, '=');
151 if (pos2 == NULL) {
152 wpa_printf(MSG_ERROR, "Line %d: Invalid SSID line "
153 "'%s'.", *line, pos);
154 errors++;
155 continue;
156 }
157
158 *pos2++ = '\0';
159 if (*pos2 == '"') {
160 if (os_strchr(pos2 + 1, '"') == NULL) {
161 wpa_printf(MSG_ERROR, "Line %d: invalid "
162 "quotation '%s'.", *line, pos2);
163 errors++;
164 continue;
165 }
166 }
167
168 if (wpa_config_set(ssid, pos, pos2, *line) < 0)
169 errors++;
170 }
171
172 if (!end) {
173 wpa_printf(MSG_ERROR, "Line %d: network block was not "
174 "terminated properly.", *line);
175 errors++;
176 }
177
178 errors += wpa_config_validate_network(ssid, *line);
179
180 if (errors) {
181 wpa_config_free_ssid(ssid);
182 ssid = NULL;
183 }
184
185 return ssid;
186 }
187
188
wpa_config_read_blob(FILE * f,int * line,const char * name)189 static struct wpa_config_blob * wpa_config_read_blob(FILE *f, int *line,
190 const char *name)
191 {
192 struct wpa_config_blob *blob;
193 char buf[256], *pos;
194 unsigned char *encoded = NULL, *nencoded;
195 int end = 0;
196 size_t encoded_len = 0, len;
197
198 wpa_printf(MSG_MSGDUMP, "Line: %d - start of a new named blob '%s'",
199 *line, name);
200
201 while (wpa_config_get_line(buf, sizeof(buf), f, line, &pos)) {
202 if (os_strcmp(pos, "}") == 0) {
203 end = 1;
204 break;
205 }
206
207 len = os_strlen(pos);
208 nencoded = os_realloc(encoded, encoded_len + len);
209 if (nencoded == NULL) {
210 wpa_printf(MSG_ERROR, "Line %d: not enough memory for "
211 "blob", *line);
212 os_free(encoded);
213 return NULL;
214 }
215 encoded = nencoded;
216 os_memcpy(encoded + encoded_len, pos, len);
217 encoded_len += len;
218 }
219
220 if (!end) {
221 wpa_printf(MSG_ERROR, "Line %d: blob was not terminated "
222 "properly", *line);
223 os_free(encoded);
224 return NULL;
225 }
226
227 blob = os_zalloc(sizeof(*blob));
228 if (blob == NULL) {
229 os_free(encoded);
230 return NULL;
231 }
232 blob->name = os_strdup(name);
233 blob->data = base64_decode(encoded, encoded_len, &blob->len);
234 os_free(encoded);
235
236 if (blob->name == NULL || blob->data == NULL) {
237 wpa_config_free_blob(blob);
238 return NULL;
239 }
240
241 return blob;
242 }
243
244
wpa_config_read(const char * name)245 struct wpa_config * wpa_config_read(const char *name)
246 {
247 FILE *f;
248 char buf[256], *pos;
249 int errors = 0, line = 0;
250 struct wpa_ssid *ssid, *tail = NULL, *head = NULL;
251 struct wpa_config *config;
252 int id = 0;
253
254 config = wpa_config_alloc_empty(NULL, NULL);
255 if (config == NULL)
256 return NULL;
257 wpa_printf(MSG_DEBUG, "Reading configuration file '%s'", name);
258 f = fopen(name, "r");
259 if (f == NULL) {
260 os_free(config);
261 return NULL;
262 }
263 /* When creating the config file, give group read/write access
264 * to allow backup and restoring the file.
265 */
266 chmod(name, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
267
268 while (wpa_config_get_line(buf, sizeof(buf), f, &line, &pos)) {
269 if (os_strcmp(pos, "network={") == 0) {
270 ssid = wpa_config_read_network(f, &line, id++);
271 if (ssid == NULL) {
272 wpa_printf(MSG_ERROR, "Line %d: failed to "
273 "parse network block.", line);
274 #ifndef WPA_IGNORE_CONFIG_ERRORS
275 errors++;
276 #endif
277 continue;
278 }
279 if (head == NULL) {
280 head = tail = ssid;
281 } else {
282 tail->next = ssid;
283 tail = ssid;
284 }
285 if (wpa_config_add_prio_network(config, ssid)) {
286 wpa_printf(MSG_ERROR, "Line %d: failed to add "
287 "network block to priority list.",
288 line);
289 errors++;
290 continue;
291 }
292 } else if (os_strncmp(pos, "blob-base64-", 12) == 0) {
293 char *bname = pos + 12, *name_end;
294 struct wpa_config_blob *blob;
295
296 name_end = os_strchr(bname, '=');
297 if (name_end == NULL) {
298 wpa_printf(MSG_ERROR, "Line %d: no blob name "
299 "terminator", line);
300 errors++;
301 continue;
302 }
303 *name_end = '\0';
304
305 blob = wpa_config_read_blob(f, &line, bname);
306 if (blob == NULL) {
307 wpa_printf(MSG_ERROR, "Line %d: failed to read"
308 " blob %s", line, bname);
309 errors++;
310 continue;
311 }
312 wpa_config_set_blob(config, blob);
313 #ifdef CONFIG_CTRL_IFACE
314 } else if (os_strncmp(pos, "ctrl_interface=", 15) == 0) {
315 os_free(config->ctrl_interface);
316 config->ctrl_interface = os_strdup(pos + 15);
317 wpa_printf(MSG_DEBUG, "ctrl_interface='%s'",
318 config->ctrl_interface);
319 } else if (os_strncmp(pos, "ctrl_interface_group=", 21) == 0) {
320 os_free(config->ctrl_interface_group);
321 config->ctrl_interface_group = os_strdup(pos + 21);
322 wpa_printf(MSG_DEBUG, "ctrl_interface_group='%s' "
323 "(DEPRECATED)",
324 config->ctrl_interface_group);
325 #endif /* CONFIG_CTRL_IFACE */
326 } else if (os_strncmp(pos, "eapol_version=", 14) == 0) {
327 config->eapol_version = atoi(pos + 14);
328 if (config->eapol_version < 1 ||
329 config->eapol_version > 2) {
330 wpa_printf(MSG_ERROR, "Line %d: Invalid EAPOL "
331 "version (%d): '%s'.",
332 line, config->eapol_version, pos);
333 errors++;
334 continue;
335 }
336 wpa_printf(MSG_DEBUG, "eapol_version=%d",
337 config->eapol_version);
338 } else if (os_strncmp(pos, "ap_scan=", 8) == 0) {
339 config->ap_scan = atoi(pos + 8);
340 wpa_printf(MSG_DEBUG, "ap_scan=%d", config->ap_scan);
341 } else if (os_strncmp(pos, "fast_reauth=", 12) == 0) {
342 config->fast_reauth = atoi(pos + 12);
343 wpa_printf(MSG_DEBUG, "fast_reauth=%d",
344 config->fast_reauth);
345 } else if (os_strncmp(pos, "opensc_engine_path=", 19) == 0) {
346 os_free(config->opensc_engine_path);
347 config->opensc_engine_path = os_strdup(pos + 19);
348 wpa_printf(MSG_DEBUG, "opensc_engine_path='%s'",
349 config->opensc_engine_path);
350 } else if (os_strncmp(pos, "pkcs11_engine_path=", 19) == 0) {
351 os_free(config->pkcs11_engine_path);
352 config->pkcs11_engine_path = os_strdup(pos + 19);
353 wpa_printf(MSG_DEBUG, "pkcs11_engine_path='%s'",
354 config->pkcs11_engine_path);
355 } else if (os_strncmp(pos, "pkcs11_module_path=", 19) == 0) {
356 os_free(config->pkcs11_module_path);
357 config->pkcs11_module_path = os_strdup(pos + 19);
358 wpa_printf(MSG_DEBUG, "pkcs11_module_path='%s'",
359 config->pkcs11_module_path);
360 } else if (os_strncmp(pos, "driver_param=", 13) == 0) {
361 os_free(config->driver_param);
362 config->driver_param = os_strdup(pos + 13);
363 wpa_printf(MSG_DEBUG, "driver_param='%s'",
364 config->driver_param);
365 } else if (os_strncmp(pos, "dot11RSNAConfigPMKLifetime=", 27)
366 == 0) {
367 config->dot11RSNAConfigPMKLifetime = atoi(pos + 27);
368 wpa_printf(MSG_DEBUG, "dot11RSNAConfigPMKLifetime=%d",
369 config->dot11RSNAConfigPMKLifetime);
370 } else if (os_strncmp(pos,
371 "dot11RSNAConfigPMKReauthThreshold=", 34)
372 == 0) {
373 config->dot11RSNAConfigPMKReauthThreshold =
374 atoi(pos + 34);
375 wpa_printf(MSG_DEBUG,
376 "dot11RSNAConfigPMKReauthThreshold=%d",
377 config->dot11RSNAConfigPMKReauthThreshold);
378 } else if (os_strncmp(pos, "dot11RSNAConfigSATimeout=", 25) ==
379 0) {
380 config->dot11RSNAConfigSATimeout = atoi(pos + 25);
381 wpa_printf(MSG_DEBUG, "dot11RSNAConfigSATimeout=%d",
382 config->dot11RSNAConfigSATimeout);
383 } else if (os_strncmp(pos, "update_config=", 14) == 0) {
384 config->update_config = atoi(pos + 14);
385 wpa_printf(MSG_DEBUG, "update_config=%d",
386 config->update_config);
387 } else if (os_strncmp(pos, "load_dynamic_eap=", 17) == 0) {
388 char *so = pos + 17;
389 int ret;
390 wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
391 ret = eap_peer_method_load(so);
392 if (ret == -2) {
393 wpa_printf(MSG_DEBUG, "This EAP type was "
394 "already loaded - not reloading.");
395 } else if (ret) {
396 wpa_printf(MSG_ERROR, "Line %d: Failed to "
397 "load dynamic EAP method '%s'.",
398 line, so);
399 errors++;
400 }
401 } else {
402 wpa_printf(MSG_ERROR, "Line %d: Invalid configuration "
403 "line '%s'.", line, pos);
404 errors++;
405 continue;
406 }
407 }
408
409 fclose(f);
410
411 config->ssid = head;
412 wpa_config_debug_dump_networks(config);
413
414 #ifndef WPA_IGNORE_CONFIG_ERRORS
415 if (errors) {
416 wpa_config_free(config);
417 config = NULL;
418 head = NULL;
419 }
420 #endif
421 return config;
422 }
423
424
write_str(FILE * f,const char * field,struct wpa_ssid * ssid)425 static void write_str(FILE *f, const char *field, struct wpa_ssid *ssid)
426 {
427 char *value = wpa_config_get(ssid, field);
428 if (value == NULL)
429 return;
430 fprintf(f, "\t%s=%s\n", field, value);
431 os_free(value);
432 }
433
434
write_int(FILE * f,const char * field,int value,int def)435 static void write_int(FILE *f, const char *field, int value, int def)
436 {
437 if (value == def)
438 return;
439 fprintf(f, "\t%s=%d\n", field, value);
440 }
441
442
write_bssid(FILE * f,struct wpa_ssid * ssid)443 static void write_bssid(FILE *f, struct wpa_ssid *ssid)
444 {
445 char *value = wpa_config_get(ssid, "bssid");
446 if (value == NULL)
447 return;
448 fprintf(f, "\tbssid=%s\n", value);
449 os_free(value);
450 }
451
452
write_psk(FILE * f,struct wpa_ssid * ssid)453 static void write_psk(FILE *f, struct wpa_ssid *ssid)
454 {
455 char *value = wpa_config_get(ssid, "psk");
456 if (value == NULL)
457 return;
458 fprintf(f, "\tpsk=%s\n", value);
459 os_free(value);
460 }
461
462
write_proto(FILE * f,struct wpa_ssid * ssid)463 static void write_proto(FILE *f, struct wpa_ssid *ssid)
464 {
465 char *value;
466
467 if (ssid->proto == DEFAULT_PROTO)
468 return;
469
470 value = wpa_config_get(ssid, "proto");
471 if (value == NULL)
472 return;
473 if (value[0])
474 fprintf(f, "\tproto=%s\n", value);
475 os_free(value);
476 }
477
478
write_key_mgmt(FILE * f,struct wpa_ssid * ssid)479 static void write_key_mgmt(FILE *f, struct wpa_ssid *ssid)
480 {
481 char *value;
482
483 if (ssid->key_mgmt == DEFAULT_KEY_MGMT)
484 return;
485
486 value = wpa_config_get(ssid, "key_mgmt");
487 if (value == NULL)
488 return;
489 if (value[0])
490 fprintf(f, "\tkey_mgmt=%s\n", value);
491 os_free(value);
492 }
493
494
write_pairwise(FILE * f,struct wpa_ssid * ssid)495 static void write_pairwise(FILE *f, struct wpa_ssid *ssid)
496 {
497 char *value;
498
499 if (ssid->pairwise_cipher == DEFAULT_PAIRWISE)
500 return;
501
502 value = wpa_config_get(ssid, "pairwise");
503 if (value == NULL)
504 return;
505 if (value[0])
506 fprintf(f, "\tpairwise=%s\n", value);
507 os_free(value);
508 }
509
510
write_group(FILE * f,struct wpa_ssid * ssid)511 static void write_group(FILE *f, struct wpa_ssid *ssid)
512 {
513 char *value;
514
515 if (ssid->group_cipher == DEFAULT_GROUP)
516 return;
517
518 value = wpa_config_get(ssid, "group");
519 if (value == NULL)
520 return;
521 if (value[0])
522 fprintf(f, "\tgroup=%s\n", value);
523 os_free(value);
524 }
525
526
write_auth_alg(FILE * f,struct wpa_ssid * ssid)527 static void write_auth_alg(FILE *f, struct wpa_ssid *ssid)
528 {
529 char *value;
530
531 if (ssid->auth_alg == 0)
532 return;
533
534 value = wpa_config_get(ssid, "auth_alg");
535 if (value == NULL)
536 return;
537 if (value[0])
538 fprintf(f, "\tauth_alg=%s\n", value);
539 os_free(value);
540 }
541
542
543 #ifdef IEEE8021X_EAPOL
write_eap(FILE * f,struct wpa_ssid * ssid)544 static void write_eap(FILE *f, struct wpa_ssid *ssid)
545 {
546 char *value;
547
548 value = wpa_config_get(ssid, "eap");
549 if (value == NULL)
550 return;
551
552 if (value[0])
553 fprintf(f, "\teap=%s\n", value);
554 os_free(value);
555 }
556 #endif /* IEEE8021X_EAPOL */
557
558
write_wep_key(FILE * f,int idx,struct wpa_ssid * ssid)559 static void write_wep_key(FILE *f, int idx, struct wpa_ssid *ssid)
560 {
561 char field[20], *value;
562
563 os_snprintf(field, sizeof(field), "wep_key%d", idx);
564 value = wpa_config_get(ssid, field);
565 if (value) {
566 fprintf(f, "\t%s=%s\n", field, value);
567 os_free(value);
568 }
569 }
570
571
wpa_config_write_network(FILE * f,struct wpa_ssid * ssid)572 static void wpa_config_write_network(FILE *f, struct wpa_ssid *ssid)
573 {
574 int i;
575
576 #define STR(t) write_str(f, #t, ssid)
577 #define INT(t) write_int(f, #t, ssid->t, 0)
578 #define INT_DEF(t, def) write_int(f, #t, ssid->t, def)
579
580 STR(ssid);
581 INT(scan_ssid);
582 write_bssid(f, ssid);
583 write_psk(f, ssid);
584 write_proto(f, ssid);
585 write_key_mgmt(f, ssid);
586 write_pairwise(f, ssid);
587 write_group(f, ssid);
588 write_auth_alg(f, ssid);
589 #ifdef IEEE8021X_EAPOL
590 write_eap(f, ssid);
591 STR(identity);
592 STR(anonymous_identity);
593 STR(eappsk);
594 STR(nai);
595 STR(password);
596 STR(ca_cert);
597 STR(ca_path);
598 STR(client_cert);
599 STR(private_key);
600 STR(private_key_passwd);
601 STR(dh_file);
602 STR(subject_match);
603 STR(altsubject_match);
604 STR(ca_cert2);
605 STR(ca_path2);
606 STR(client_cert2);
607 STR(private_key2);
608 STR(private_key2_passwd);
609 STR(dh_file2);
610 STR(subject_match2);
611 STR(altsubject_match2);
612 STR(phase1);
613 STR(phase2);
614 STR(pcsc);
615 STR(pin);
616 STR(engine_id);
617 STR(key_id);
618 INT(engine);
619 INT_DEF(eapol_flags, DEFAULT_EAPOL_FLAGS);
620 #endif /* IEEE8021X_EAPOL */
621 for (i = 0; i < 4; i++)
622 write_wep_key(f, i, ssid);
623 INT(wep_tx_keyidx);
624 INT(priority);
625 #ifdef IEEE8021X_EAPOL
626 INT_DEF(eap_workaround, DEFAULT_EAP_WORKAROUND);
627 STR(pac_file);
628 INT_DEF(fragment_size, DEFAULT_FRAGMENT_SIZE);
629 #endif /* IEEE8021X_EAPOL */
630 INT(mode);
631 INT(proactive_key_caching);
632 INT(disabled);
633 INT(peerkey);
634 #ifdef CONFIG_IEEE80211W
635 INT(ieee80211w);
636 #endif /* CONFIG_IEEE80211W */
637 STR(id_str);
638
639 #undef STR
640 #undef INT
641 #undef INT_DEF
642 }
643
644
wpa_config_write_blob(FILE * f,struct wpa_config_blob * blob)645 static int wpa_config_write_blob(FILE *f, struct wpa_config_blob *blob)
646 {
647 unsigned char *encoded;
648
649 encoded = base64_encode(blob->data, blob->len, NULL);
650 if (encoded == NULL)
651 return -1;
652
653 fprintf(f, "\nblob-base64-%s={\n%s}\n", blob->name, encoded);
654 os_free(encoded);
655 return 0;
656 }
657
658
wpa_config_write_global(FILE * f,struct wpa_config * config)659 static void wpa_config_write_global(FILE *f, struct wpa_config *config)
660 {
661 #ifdef CONFIG_CTRL_IFACE
662 if (config->ctrl_interface)
663 fprintf(f, "ctrl_interface=%s\n", config->ctrl_interface);
664 if (config->ctrl_interface_group)
665 fprintf(f, "ctrl_interface_group=%s\n",
666 config->ctrl_interface_group);
667 #endif /* CONFIG_CTRL_IFACE */
668 if (config->eapol_version != DEFAULT_EAPOL_VERSION)
669 fprintf(f, "eapol_version=%d\n", config->eapol_version);
670 if (config->ap_scan != DEFAULT_AP_SCAN)
671 fprintf(f, "ap_scan=%d\n", config->ap_scan);
672 if (config->fast_reauth != DEFAULT_FAST_REAUTH)
673 fprintf(f, "fast_reauth=%d\n", config->fast_reauth);
674 if (config->opensc_engine_path)
675 fprintf(f, "opensc_engine_path=%s\n",
676 config->opensc_engine_path);
677 if (config->pkcs11_engine_path)
678 fprintf(f, "pkcs11_engine_path=%s\n",
679 config->pkcs11_engine_path);
680 if (config->pkcs11_module_path)
681 fprintf(f, "pkcs11_module_path=%s\n",
682 config->pkcs11_module_path);
683 if (config->driver_param)
684 fprintf(f, "driver_param=%s\n", config->driver_param);
685 if (config->dot11RSNAConfigPMKLifetime)
686 fprintf(f, "dot11RSNAConfigPMKLifetime=%d\n",
687 config->dot11RSNAConfigPMKLifetime);
688 if (config->dot11RSNAConfigPMKReauthThreshold)
689 fprintf(f, "dot11RSNAConfigPMKReauthThreshold=%d\n",
690 config->dot11RSNAConfigPMKReauthThreshold);
691 if (config->dot11RSNAConfigSATimeout)
692 fprintf(f, "dot11RSNAConfigSATimeout=%d\n",
693 config->dot11RSNAConfigSATimeout);
694 if (config->update_config)
695 fprintf(f, "update_config=%d\n", config->update_config);
696 }
697
698
wpa_config_write(const char * name,struct wpa_config * config)699 int wpa_config_write(const char *name, struct wpa_config *config)
700 {
701 FILE *f;
702 struct wpa_ssid *ssid;
703 struct wpa_config_blob *blob;
704 int ret = 0;
705
706 wpa_printf(MSG_DEBUG, "Writing configuration file '%s'", name);
707
708 f = fopen(name, "w");
709 if (f == NULL) {
710 wpa_printf(MSG_DEBUG, "Failed to open '%s' for writing", name);
711 return -1;
712 }
713
714 wpa_config_write_global(f, config);
715
716 for (ssid = config->ssid; ssid; ssid = ssid->next) {
717 fprintf(f, "\nnetwork={\n");
718 wpa_config_write_network(f, ssid);
719 fprintf(f, "}\n");
720 }
721
722 for (blob = config->blobs; blob; blob = blob->next) {
723 ret = wpa_config_write_blob(f, blob);
724 if (ret)
725 break;
726 }
727
728 fclose(f);
729
730 wpa_printf(MSG_DEBUG, "Configuration file '%s' written %ssuccessfully",
731 name, ret ? "un" : "");
732 return ret;
733 }
734