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 */
43static 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
96static 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
129static 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
189static 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
245struct 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
425static 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
435static 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
443static 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
453static 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
463static 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
479static 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
495static 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
511static 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
527static 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
544static 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
559static 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
572static 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
645static 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
659static 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
699int 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