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Interworking: Allow SSID-based network exclusion for credentials
[thirdparty/hostap.git] / wpa_supplicant / config.c
1 /*
2 * WPA Supplicant / Configuration parser and common functions
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
9 #include "includes.h"
10
11 #include "common.h"
12 #include "utils/uuid.h"
13 #include "crypto/sha1.h"
14 #include "rsn_supp/wpa.h"
15 #include "eap_peer/eap.h"
16 #include "p2p/p2p.h"
17 #include "config.h"
18
19
20 #if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
21 #define NO_CONFIG_WRITE
22 #endif
23
24 /*
25 * Structure for network configuration parsing. This data is used to implement
26 * a generic parser for each network block variable. The table of configuration
27 * variables is defined below in this file (ssid_fields[]).
28 */
29 struct parse_data {
30 /* Configuration variable name */
31 char *name;
32
33 /* Parser function for this variable */
34 int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
35 int line, const char *value);
36
37 #ifndef NO_CONFIG_WRITE
38 /* Writer function (i.e., to get the variable in text format from
39 * internal presentation). */
40 char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
41 #endif /* NO_CONFIG_WRITE */
42
43 /* Variable specific parameters for the parser. */
44 void *param1, *param2, *param3, *param4;
45
46 /* 0 = this variable can be included in debug output and ctrl_iface
47 * 1 = this variable contains key/private data and it must not be
48 * included in debug output unless explicitly requested. In
49 * addition, this variable will not be readable through the
50 * ctrl_iface.
51 */
52 int key_data;
53 };
54
55
56 static int wpa_config_parse_str(const struct parse_data *data,
57 struct wpa_ssid *ssid,
58 int line, const char *value)
59 {
60 size_t res_len, *dst_len;
61 char **dst, *tmp;
62
63 if (os_strcmp(value, "NULL") == 0) {
64 wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
65 data->name);
66 tmp = NULL;
67 res_len = 0;
68 goto set;
69 }
70
71 tmp = wpa_config_parse_string(value, &res_len);
72 if (tmp == NULL) {
73 wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
74 line, data->name,
75 data->key_data ? "[KEY DATA REMOVED]" : value);
76 return -1;
77 }
78
79 if (data->key_data) {
80 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
81 (u8 *) tmp, res_len);
82 } else {
83 wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
84 (u8 *) tmp, res_len);
85 }
86
87 if (data->param3 && res_len < (size_t) data->param3) {
88 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
89 "min_len=%ld)", line, data->name,
90 (unsigned long) res_len, (long) data->param3);
91 os_free(tmp);
92 return -1;
93 }
94
95 if (data->param4 && res_len > (size_t) data->param4) {
96 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
97 "max_len=%ld)", line, data->name,
98 (unsigned long) res_len, (long) data->param4);
99 os_free(tmp);
100 return -1;
101 }
102
103 set:
104 dst = (char **) (((u8 *) ssid) + (long) data->param1);
105 dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
106 os_free(*dst);
107 *dst = tmp;
108 if (data->param2)
109 *dst_len = res_len;
110
111 return 0;
112 }
113
114
115 #ifndef NO_CONFIG_WRITE
116 static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
117 {
118 char *buf;
119
120 buf = os_malloc(len + 3);
121 if (buf == NULL)
122 return NULL;
123 buf[0] = '"';
124 os_memcpy(buf + 1, value, len);
125 buf[len + 1] = '"';
126 buf[len + 2] = '\0';
127
128 return buf;
129 }
130
131
132 static char * wpa_config_write_string_hex(const u8 *value, size_t len)
133 {
134 char *buf;
135
136 buf = os_zalloc(2 * len + 1);
137 if (buf == NULL)
138 return NULL;
139 wpa_snprintf_hex(buf, 2 * len + 1, value, len);
140
141 return buf;
142 }
143
144
145 static char * wpa_config_write_string(const u8 *value, size_t len)
146 {
147 if (value == NULL)
148 return NULL;
149
150 if (is_hex(value, len))
151 return wpa_config_write_string_hex(value, len);
152 else
153 return wpa_config_write_string_ascii(value, len);
154 }
155
156
157 static char * wpa_config_write_str(const struct parse_data *data,
158 struct wpa_ssid *ssid)
159 {
160 size_t len;
161 char **src;
162
163 src = (char **) (((u8 *) ssid) + (long) data->param1);
164 if (*src == NULL)
165 return NULL;
166
167 if (data->param2)
168 len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
169 else
170 len = os_strlen(*src);
171
172 return wpa_config_write_string((const u8 *) *src, len);
173 }
174 #endif /* NO_CONFIG_WRITE */
175
176
177 static int wpa_config_parse_int(const struct parse_data *data,
178 struct wpa_ssid *ssid,
179 int line, const char *value)
180 {
181 int *dst;
182
183 dst = (int *) (((u8 *) ssid) + (long) data->param1);
184 *dst = atoi(value);
185 wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
186
187 if (data->param3 && *dst < (long) data->param3) {
188 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
189 "min_value=%ld)", line, data->name, *dst,
190 (long) data->param3);
191 *dst = (long) data->param3;
192 return -1;
193 }
194
195 if (data->param4 && *dst > (long) data->param4) {
196 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
197 "max_value=%ld)", line, data->name, *dst,
198 (long) data->param4);
199 *dst = (long) data->param4;
200 return -1;
201 }
202
203 return 0;
204 }
205
206
207 #ifndef NO_CONFIG_WRITE
208 static char * wpa_config_write_int(const struct parse_data *data,
209 struct wpa_ssid *ssid)
210 {
211 int *src, res;
212 char *value;
213
214 src = (int *) (((u8 *) ssid) + (long) data->param1);
215
216 value = os_malloc(20);
217 if (value == NULL)
218 return NULL;
219 res = os_snprintf(value, 20, "%d", *src);
220 if (res < 0 || res >= 20) {
221 os_free(value);
222 return NULL;
223 }
224 value[20 - 1] = '\0';
225 return value;
226 }
227 #endif /* NO_CONFIG_WRITE */
228
229
230 static int wpa_config_parse_bssid(const struct parse_data *data,
231 struct wpa_ssid *ssid, int line,
232 const char *value)
233 {
234 if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
235 os_strcmp(value, "any") == 0) {
236 ssid->bssid_set = 0;
237 wpa_printf(MSG_MSGDUMP, "BSSID any");
238 return 0;
239 }
240 if (hwaddr_aton(value, ssid->bssid)) {
241 wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
242 line, value);
243 return -1;
244 }
245 ssid->bssid_set = 1;
246 wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
247 return 0;
248 }
249
250
251 #ifndef NO_CONFIG_WRITE
252 static char * wpa_config_write_bssid(const struct parse_data *data,
253 struct wpa_ssid *ssid)
254 {
255 char *value;
256 int res;
257
258 if (!ssid->bssid_set)
259 return NULL;
260
261 value = os_malloc(20);
262 if (value == NULL)
263 return NULL;
264 res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
265 if (res < 0 || res >= 20) {
266 os_free(value);
267 return NULL;
268 }
269 value[20 - 1] = '\0';
270 return value;
271 }
272 #endif /* NO_CONFIG_WRITE */
273
274
275 static int wpa_config_parse_psk(const struct parse_data *data,
276 struct wpa_ssid *ssid, int line,
277 const char *value)
278 {
279 #ifdef CONFIG_EXT_PASSWORD
280 if (os_strncmp(value, "ext:", 4) == 0) {
281 os_free(ssid->passphrase);
282 ssid->passphrase = NULL;
283 ssid->psk_set = 0;
284 os_free(ssid->ext_psk);
285 ssid->ext_psk = os_strdup(value + 4);
286 if (ssid->ext_psk == NULL)
287 return -1;
288 wpa_printf(MSG_DEBUG, "PSK: External password '%s'",
289 ssid->ext_psk);
290 return 0;
291 }
292 #endif /* CONFIG_EXT_PASSWORD */
293
294 if (*value == '"') {
295 #ifndef CONFIG_NO_PBKDF2
296 const char *pos;
297 size_t len;
298
299 value++;
300 pos = os_strrchr(value, '"');
301 if (pos)
302 len = pos - value;
303 else
304 len = os_strlen(value);
305 if (len < 8 || len > 63) {
306 wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
307 "length %lu (expected: 8..63) '%s'.",
308 line, (unsigned long) len, value);
309 return -1;
310 }
311 wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
312 (u8 *) value, len);
313 if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
314 os_memcmp(ssid->passphrase, value, len) == 0)
315 return 0;
316 ssid->psk_set = 0;
317 os_free(ssid->passphrase);
318 ssid->passphrase = os_malloc(len + 1);
319 if (ssid->passphrase == NULL)
320 return -1;
321 os_memcpy(ssid->passphrase, value, len);
322 ssid->passphrase[len] = '\0';
323 return 0;
324 #else /* CONFIG_NO_PBKDF2 */
325 wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
326 "supported.", line);
327 return -1;
328 #endif /* CONFIG_NO_PBKDF2 */
329 }
330
331 if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
332 value[PMK_LEN * 2] != '\0') {
333 wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
334 line, value);
335 return -1;
336 }
337
338 os_free(ssid->passphrase);
339 ssid->passphrase = NULL;
340
341 ssid->psk_set = 1;
342 wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
343 return 0;
344 }
345
346
347 #ifndef NO_CONFIG_WRITE
348 static char * wpa_config_write_psk(const struct parse_data *data,
349 struct wpa_ssid *ssid)
350 {
351 #ifdef CONFIG_EXT_PASSWORD
352 if (ssid->ext_psk) {
353 size_t len = 4 + os_strlen(ssid->ext_psk) + 1;
354 char *buf = os_malloc(len);
355 if (buf == NULL)
356 return NULL;
357 os_snprintf(buf, len, "ext:%s", ssid->ext_psk);
358 return buf;
359 }
360 #endif /* CONFIG_EXT_PASSWORD */
361
362 if (ssid->passphrase)
363 return wpa_config_write_string_ascii(
364 (const u8 *) ssid->passphrase,
365 os_strlen(ssid->passphrase));
366
367 if (ssid->psk_set)
368 return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
369
370 return NULL;
371 }
372 #endif /* NO_CONFIG_WRITE */
373
374
375 static int wpa_config_parse_proto(const struct parse_data *data,
376 struct wpa_ssid *ssid, int line,
377 const char *value)
378 {
379 int val = 0, last, errors = 0;
380 char *start, *end, *buf;
381
382 buf = os_strdup(value);
383 if (buf == NULL)
384 return -1;
385 start = buf;
386
387 while (*start != '\0') {
388 while (*start == ' ' || *start == '\t')
389 start++;
390 if (*start == '\0')
391 break;
392 end = start;
393 while (*end != ' ' && *end != '\t' && *end != '\0')
394 end++;
395 last = *end == '\0';
396 *end = '\0';
397 if (os_strcmp(start, "WPA") == 0)
398 val |= WPA_PROTO_WPA;
399 else if (os_strcmp(start, "RSN") == 0 ||
400 os_strcmp(start, "WPA2") == 0)
401 val |= WPA_PROTO_RSN;
402 else {
403 wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
404 line, start);
405 errors++;
406 }
407
408 if (last)
409 break;
410 start = end + 1;
411 }
412 os_free(buf);
413
414 if (val == 0) {
415 wpa_printf(MSG_ERROR,
416 "Line %d: no proto values configured.", line);
417 errors++;
418 }
419
420 wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
421 ssid->proto = val;
422 return errors ? -1 : 0;
423 }
424
425
426 #ifndef NO_CONFIG_WRITE
427 static char * wpa_config_write_proto(const struct parse_data *data,
428 struct wpa_ssid *ssid)
429 {
430 int first = 1, ret;
431 char *buf, *pos, *end;
432
433 pos = buf = os_zalloc(10);
434 if (buf == NULL)
435 return NULL;
436 end = buf + 10;
437
438 if (ssid->proto & WPA_PROTO_WPA) {
439 ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " ");
440 if (ret < 0 || ret >= end - pos)
441 return buf;
442 pos += ret;
443 first = 0;
444 }
445
446 if (ssid->proto & WPA_PROTO_RSN) {
447 ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " ");
448 if (ret < 0 || ret >= end - pos)
449 return buf;
450 pos += ret;
451 first = 0;
452 }
453
454 return buf;
455 }
456 #endif /* NO_CONFIG_WRITE */
457
458
459 static int wpa_config_parse_key_mgmt(const struct parse_data *data,
460 struct wpa_ssid *ssid, int line,
461 const char *value)
462 {
463 int val = 0, last, errors = 0;
464 char *start, *end, *buf;
465
466 buf = os_strdup(value);
467 if (buf == NULL)
468 return -1;
469 start = buf;
470
471 while (*start != '\0') {
472 while (*start == ' ' || *start == '\t')
473 start++;
474 if (*start == '\0')
475 break;
476 end = start;
477 while (*end != ' ' && *end != '\t' && *end != '\0')
478 end++;
479 last = *end == '\0';
480 *end = '\0';
481 if (os_strcmp(start, "WPA-PSK") == 0)
482 val |= WPA_KEY_MGMT_PSK;
483 else if (os_strcmp(start, "WPA-EAP") == 0)
484 val |= WPA_KEY_MGMT_IEEE8021X;
485 else if (os_strcmp(start, "IEEE8021X") == 0)
486 val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
487 else if (os_strcmp(start, "NONE") == 0)
488 val |= WPA_KEY_MGMT_NONE;
489 else if (os_strcmp(start, "WPA-NONE") == 0)
490 val |= WPA_KEY_MGMT_WPA_NONE;
491 #ifdef CONFIG_IEEE80211R
492 else if (os_strcmp(start, "FT-PSK") == 0)
493 val |= WPA_KEY_MGMT_FT_PSK;
494 else if (os_strcmp(start, "FT-EAP") == 0)
495 val |= WPA_KEY_MGMT_FT_IEEE8021X;
496 #endif /* CONFIG_IEEE80211R */
497 #ifdef CONFIG_IEEE80211W
498 else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
499 val |= WPA_KEY_MGMT_PSK_SHA256;
500 else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
501 val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
502 #endif /* CONFIG_IEEE80211W */
503 #ifdef CONFIG_WPS
504 else if (os_strcmp(start, "WPS") == 0)
505 val |= WPA_KEY_MGMT_WPS;
506 #endif /* CONFIG_WPS */
507 #ifdef CONFIG_SAE
508 else if (os_strcmp(start, "SAE") == 0)
509 val |= WPA_KEY_MGMT_SAE;
510 else if (os_strcmp(start, "FT-SAE") == 0)
511 val |= WPA_KEY_MGMT_FT_SAE;
512 #endif /* CONFIG_SAE */
513 else {
514 wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
515 line, start);
516 errors++;
517 }
518
519 if (last)
520 break;
521 start = end + 1;
522 }
523 os_free(buf);
524
525 if (val == 0) {
526 wpa_printf(MSG_ERROR,
527 "Line %d: no key_mgmt values configured.", line);
528 errors++;
529 }
530
531 wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
532 ssid->key_mgmt = val;
533 return errors ? -1 : 0;
534 }
535
536
537 #ifndef NO_CONFIG_WRITE
538 static char * wpa_config_write_key_mgmt(const struct parse_data *data,
539 struct wpa_ssid *ssid)
540 {
541 char *buf, *pos, *end;
542 int ret;
543
544 pos = buf = os_zalloc(50);
545 if (buf == NULL)
546 return NULL;
547 end = buf + 50;
548
549 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
550 ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
551 pos == buf ? "" : " ");
552 if (ret < 0 || ret >= end - pos) {
553 end[-1] = '\0';
554 return buf;
555 }
556 pos += ret;
557 }
558
559 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
560 ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
561 pos == buf ? "" : " ");
562 if (ret < 0 || ret >= end - pos) {
563 end[-1] = '\0';
564 return buf;
565 }
566 pos += ret;
567 }
568
569 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
570 ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
571 pos == buf ? "" : " ");
572 if (ret < 0 || ret >= end - pos) {
573 end[-1] = '\0';
574 return buf;
575 }
576 pos += ret;
577 }
578
579 if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
580 ret = os_snprintf(pos, end - pos, "%sNONE",
581 pos == buf ? "" : " ");
582 if (ret < 0 || ret >= end - pos) {
583 end[-1] = '\0';
584 return buf;
585 }
586 pos += ret;
587 }
588
589 if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
590 ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
591 pos == buf ? "" : " ");
592 if (ret < 0 || ret >= end - pos) {
593 end[-1] = '\0';
594 return buf;
595 }
596 pos += ret;
597 }
598
599 #ifdef CONFIG_IEEE80211R
600 if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK)
601 pos += os_snprintf(pos, end - pos, "%sFT-PSK",
602 pos == buf ? "" : " ");
603
604 if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X)
605 pos += os_snprintf(pos, end - pos, "%sFT-EAP",
606 pos == buf ? "" : " ");
607 #endif /* CONFIG_IEEE80211R */
608
609 #ifdef CONFIG_IEEE80211W
610 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256)
611 pos += os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
612 pos == buf ? "" : " ");
613
614 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256)
615 pos += os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
616 pos == buf ? "" : " ");
617 #endif /* CONFIG_IEEE80211W */
618
619 #ifdef CONFIG_WPS
620 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
621 pos += os_snprintf(pos, end - pos, "%sWPS",
622 pos == buf ? "" : " ");
623 #endif /* CONFIG_WPS */
624
625 return buf;
626 }
627 #endif /* NO_CONFIG_WRITE */
628
629
630 static int wpa_config_parse_cipher(int line, const char *value)
631 {
632 int val = 0, last;
633 char *start, *end, *buf;
634
635 buf = os_strdup(value);
636 if (buf == NULL)
637 return -1;
638 start = buf;
639
640 while (*start != '\0') {
641 while (*start == ' ' || *start == '\t')
642 start++;
643 if (*start == '\0')
644 break;
645 end = start;
646 while (*end != ' ' && *end != '\t' && *end != '\0')
647 end++;
648 last = *end == '\0';
649 *end = '\0';
650 if (os_strcmp(start, "CCMP") == 0)
651 val |= WPA_CIPHER_CCMP;
652 else if (os_strcmp(start, "GCMP") == 0)
653 val |= WPA_CIPHER_GCMP;
654 else if (os_strcmp(start, "TKIP") == 0)
655 val |= WPA_CIPHER_TKIP;
656 else if (os_strcmp(start, "WEP104") == 0)
657 val |= WPA_CIPHER_WEP104;
658 else if (os_strcmp(start, "WEP40") == 0)
659 val |= WPA_CIPHER_WEP40;
660 else if (os_strcmp(start, "NONE") == 0)
661 val |= WPA_CIPHER_NONE;
662 else {
663 wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
664 line, start);
665 os_free(buf);
666 return -1;
667 }
668
669 if (last)
670 break;
671 start = end + 1;
672 }
673 os_free(buf);
674
675 if (val == 0) {
676 wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
677 line);
678 return -1;
679 }
680 return val;
681 }
682
683
684 #ifndef NO_CONFIG_WRITE
685 static char * wpa_config_write_cipher(int cipher)
686 {
687 char *buf, *pos, *end;
688 int ret;
689
690 pos = buf = os_zalloc(50);
691 if (buf == NULL)
692 return NULL;
693 end = buf + 50;
694
695 if (cipher & WPA_CIPHER_CCMP) {
696 ret = os_snprintf(pos, end - pos, "%sCCMP",
697 pos == buf ? "" : " ");
698 if (ret < 0 || ret >= end - pos) {
699 end[-1] = '\0';
700 return buf;
701 }
702 pos += ret;
703 }
704
705 if (cipher & WPA_CIPHER_GCMP) {
706 ret = os_snprintf(pos, end - pos, "%sGCMP",
707 pos == buf ? "" : " ");
708 if (ret < 0 || ret >= end - pos) {
709 end[-1] = '\0';
710 return buf;
711 }
712 pos += ret;
713 }
714
715 if (cipher & WPA_CIPHER_TKIP) {
716 ret = os_snprintf(pos, end - pos, "%sTKIP",
717 pos == buf ? "" : " ");
718 if (ret < 0 || ret >= end - pos) {
719 end[-1] = '\0';
720 return buf;
721 }
722 pos += ret;
723 }
724
725 if (cipher & WPA_CIPHER_WEP104) {
726 ret = os_snprintf(pos, end - pos, "%sWEP104",
727 pos == buf ? "" : " ");
728 if (ret < 0 || ret >= end - pos) {
729 end[-1] = '\0';
730 return buf;
731 }
732 pos += ret;
733 }
734
735 if (cipher & WPA_CIPHER_WEP40) {
736 ret = os_snprintf(pos, end - pos, "%sWEP40",
737 pos == buf ? "" : " ");
738 if (ret < 0 || ret >= end - pos) {
739 end[-1] = '\0';
740 return buf;
741 }
742 pos += ret;
743 }
744
745 if (cipher & WPA_CIPHER_NONE) {
746 ret = os_snprintf(pos, end - pos, "%sNONE",
747 pos == buf ? "" : " ");
748 if (ret < 0 || ret >= end - pos) {
749 end[-1] = '\0';
750 return buf;
751 }
752 pos += ret;
753 }
754
755 return buf;
756 }
757 #endif /* NO_CONFIG_WRITE */
758
759
760 static int wpa_config_parse_pairwise(const struct parse_data *data,
761 struct wpa_ssid *ssid, int line,
762 const char *value)
763 {
764 int val;
765 val = wpa_config_parse_cipher(line, value);
766 if (val == -1)
767 return -1;
768 if (val & ~(WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | WPA_CIPHER_TKIP |
769 WPA_CIPHER_NONE)) {
770 wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
771 "(0x%x).", line, val);
772 return -1;
773 }
774
775 wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
776 ssid->pairwise_cipher = val;
777 return 0;
778 }
779
780
781 #ifndef NO_CONFIG_WRITE
782 static char * wpa_config_write_pairwise(const struct parse_data *data,
783 struct wpa_ssid *ssid)
784 {
785 return wpa_config_write_cipher(ssid->pairwise_cipher);
786 }
787 #endif /* NO_CONFIG_WRITE */
788
789
790 static int wpa_config_parse_group(const struct parse_data *data,
791 struct wpa_ssid *ssid, int line,
792 const char *value)
793 {
794 int val;
795 val = wpa_config_parse_cipher(line, value);
796 if (val == -1)
797 return -1;
798 if (val & ~(WPA_CIPHER_CCMP | WPA_CIPHER_GCMP | WPA_CIPHER_TKIP |
799 WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)) {
800 wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
801 "(0x%x).", line, val);
802 return -1;
803 }
804
805 wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
806 ssid->group_cipher = val;
807 return 0;
808 }
809
810
811 #ifndef NO_CONFIG_WRITE
812 static char * wpa_config_write_group(const struct parse_data *data,
813 struct wpa_ssid *ssid)
814 {
815 return wpa_config_write_cipher(ssid->group_cipher);
816 }
817 #endif /* NO_CONFIG_WRITE */
818
819
820 static int wpa_config_parse_auth_alg(const struct parse_data *data,
821 struct wpa_ssid *ssid, int line,
822 const char *value)
823 {
824 int val = 0, last, errors = 0;
825 char *start, *end, *buf;
826
827 buf = os_strdup(value);
828 if (buf == NULL)
829 return -1;
830 start = buf;
831
832 while (*start != '\0') {
833 while (*start == ' ' || *start == '\t')
834 start++;
835 if (*start == '\0')
836 break;
837 end = start;
838 while (*end != ' ' && *end != '\t' && *end != '\0')
839 end++;
840 last = *end == '\0';
841 *end = '\0';
842 if (os_strcmp(start, "OPEN") == 0)
843 val |= WPA_AUTH_ALG_OPEN;
844 else if (os_strcmp(start, "SHARED") == 0)
845 val |= WPA_AUTH_ALG_SHARED;
846 else if (os_strcmp(start, "LEAP") == 0)
847 val |= WPA_AUTH_ALG_LEAP;
848 else {
849 wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
850 line, start);
851 errors++;
852 }
853
854 if (last)
855 break;
856 start = end + 1;
857 }
858 os_free(buf);
859
860 if (val == 0) {
861 wpa_printf(MSG_ERROR,
862 "Line %d: no auth_alg values configured.", line);
863 errors++;
864 }
865
866 wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
867 ssid->auth_alg = val;
868 return errors ? -1 : 0;
869 }
870
871
872 #ifndef NO_CONFIG_WRITE
873 static char * wpa_config_write_auth_alg(const struct parse_data *data,
874 struct wpa_ssid *ssid)
875 {
876 char *buf, *pos, *end;
877 int ret;
878
879 pos = buf = os_zalloc(30);
880 if (buf == NULL)
881 return NULL;
882 end = buf + 30;
883
884 if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
885 ret = os_snprintf(pos, end - pos, "%sOPEN",
886 pos == buf ? "" : " ");
887 if (ret < 0 || ret >= end - pos) {
888 end[-1] = '\0';
889 return buf;
890 }
891 pos += ret;
892 }
893
894 if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
895 ret = os_snprintf(pos, end - pos, "%sSHARED",
896 pos == buf ? "" : " ");
897 if (ret < 0 || ret >= end - pos) {
898 end[-1] = '\0';
899 return buf;
900 }
901 pos += ret;
902 }
903
904 if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
905 ret = os_snprintf(pos, end - pos, "%sLEAP",
906 pos == buf ? "" : " ");
907 if (ret < 0 || ret >= end - pos) {
908 end[-1] = '\0';
909 return buf;
910 }
911 pos += ret;
912 }
913
914 return buf;
915 }
916 #endif /* NO_CONFIG_WRITE */
917
918
919 static int * wpa_config_parse_freqs(const struct parse_data *data,
920 struct wpa_ssid *ssid, int line,
921 const char *value)
922 {
923 int *freqs;
924 size_t used, len;
925 const char *pos;
926
927 used = 0;
928 len = 10;
929 freqs = os_calloc(len + 1, sizeof(int));
930 if (freqs == NULL)
931 return NULL;
932
933 pos = value;
934 while (pos) {
935 while (*pos == ' ')
936 pos++;
937 if (used == len) {
938 int *n;
939 size_t i;
940 n = os_realloc_array(freqs, len * 2 + 1, sizeof(int));
941 if (n == NULL) {
942 os_free(freqs);
943 return NULL;
944 }
945 for (i = len; i <= len * 2; i++)
946 n[i] = 0;
947 freqs = n;
948 len *= 2;
949 }
950
951 freqs[used] = atoi(pos);
952 if (freqs[used] == 0)
953 break;
954 used++;
955 pos = os_strchr(pos + 1, ' ');
956 }
957
958 return freqs;
959 }
960
961
962 static int wpa_config_parse_scan_freq(const struct parse_data *data,
963 struct wpa_ssid *ssid, int line,
964 const char *value)
965 {
966 int *freqs;
967
968 freqs = wpa_config_parse_freqs(data, ssid, line, value);
969 if (freqs == NULL)
970 return -1;
971 os_free(ssid->scan_freq);
972 ssid->scan_freq = freqs;
973
974 return 0;
975 }
976
977
978 static int wpa_config_parse_freq_list(const struct parse_data *data,
979 struct wpa_ssid *ssid, int line,
980 const char *value)
981 {
982 int *freqs;
983
984 freqs = wpa_config_parse_freqs(data, ssid, line, value);
985 if (freqs == NULL)
986 return -1;
987 os_free(ssid->freq_list);
988 ssid->freq_list = freqs;
989
990 return 0;
991 }
992
993
994 #ifndef NO_CONFIG_WRITE
995 static char * wpa_config_write_freqs(const struct parse_data *data,
996 const int *freqs)
997 {
998 char *buf, *pos, *end;
999 int i, ret;
1000 size_t count;
1001
1002 if (freqs == NULL)
1003 return NULL;
1004
1005 count = 0;
1006 for (i = 0; freqs[i]; i++)
1007 count++;
1008
1009 pos = buf = os_zalloc(10 * count + 1);
1010 if (buf == NULL)
1011 return NULL;
1012 end = buf + 10 * count + 1;
1013
1014 for (i = 0; freqs[i]; i++) {
1015 ret = os_snprintf(pos, end - pos, "%s%u",
1016 i == 0 ? "" : " ", freqs[i]);
1017 if (ret < 0 || ret >= end - pos) {
1018 end[-1] = '\0';
1019 return buf;
1020 }
1021 pos += ret;
1022 }
1023
1024 return buf;
1025 }
1026
1027
1028 static char * wpa_config_write_scan_freq(const struct parse_data *data,
1029 struct wpa_ssid *ssid)
1030 {
1031 return wpa_config_write_freqs(data, ssid->scan_freq);
1032 }
1033
1034
1035 static char * wpa_config_write_freq_list(const struct parse_data *data,
1036 struct wpa_ssid *ssid)
1037 {
1038 return wpa_config_write_freqs(data, ssid->freq_list);
1039 }
1040 #endif /* NO_CONFIG_WRITE */
1041
1042
1043 #ifdef IEEE8021X_EAPOL
1044 static int wpa_config_parse_eap(const struct parse_data *data,
1045 struct wpa_ssid *ssid, int line,
1046 const char *value)
1047 {
1048 int last, errors = 0;
1049 char *start, *end, *buf;
1050 struct eap_method_type *methods = NULL, *tmp;
1051 size_t num_methods = 0;
1052
1053 buf = os_strdup(value);
1054 if (buf == NULL)
1055 return -1;
1056 start = buf;
1057
1058 while (*start != '\0') {
1059 while (*start == ' ' || *start == '\t')
1060 start++;
1061 if (*start == '\0')
1062 break;
1063 end = start;
1064 while (*end != ' ' && *end != '\t' && *end != '\0')
1065 end++;
1066 last = *end == '\0';
1067 *end = '\0';
1068 tmp = methods;
1069 methods = os_realloc_array(methods, num_methods + 1,
1070 sizeof(*methods));
1071 if (methods == NULL) {
1072 os_free(tmp);
1073 os_free(buf);
1074 return -1;
1075 }
1076 methods[num_methods].method = eap_peer_get_type(
1077 start, &methods[num_methods].vendor);
1078 if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1079 methods[num_methods].method == EAP_TYPE_NONE) {
1080 wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
1081 "'%s'", line, start);
1082 wpa_printf(MSG_ERROR, "You may need to add support for"
1083 " this EAP method during wpa_supplicant\n"
1084 "build time configuration.\n"
1085 "See README for more information.");
1086 errors++;
1087 } else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1088 methods[num_methods].method == EAP_TYPE_LEAP)
1089 ssid->leap++;
1090 else
1091 ssid->non_leap++;
1092 num_methods++;
1093 if (last)
1094 break;
1095 start = end + 1;
1096 }
1097 os_free(buf);
1098
1099 tmp = methods;
1100 methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods));
1101 if (methods == NULL) {
1102 os_free(tmp);
1103 return -1;
1104 }
1105 methods[num_methods].vendor = EAP_VENDOR_IETF;
1106 methods[num_methods].method = EAP_TYPE_NONE;
1107 num_methods++;
1108
1109 wpa_hexdump(MSG_MSGDUMP, "eap methods",
1110 (u8 *) methods, num_methods * sizeof(*methods));
1111 os_free(ssid->eap.eap_methods);
1112 ssid->eap.eap_methods = methods;
1113 return errors ? -1 : 0;
1114 }
1115
1116
1117 static char * wpa_config_write_eap(const struct parse_data *data,
1118 struct wpa_ssid *ssid)
1119 {
1120 int i, ret;
1121 char *buf, *pos, *end;
1122 const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
1123 const char *name;
1124
1125 if (eap_methods == NULL)
1126 return NULL;
1127
1128 pos = buf = os_zalloc(100);
1129 if (buf == NULL)
1130 return NULL;
1131 end = buf + 100;
1132
1133 for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
1134 eap_methods[i].method != EAP_TYPE_NONE; i++) {
1135 name = eap_get_name(eap_methods[i].vendor,
1136 eap_methods[i].method);
1137 if (name) {
1138 ret = os_snprintf(pos, end - pos, "%s%s",
1139 pos == buf ? "" : " ", name);
1140 if (ret < 0 || ret >= end - pos)
1141 break;
1142 pos += ret;
1143 }
1144 }
1145
1146 end[-1] = '\0';
1147
1148 return buf;
1149 }
1150
1151
1152 static int wpa_config_parse_password(const struct parse_data *data,
1153 struct wpa_ssid *ssid, int line,
1154 const char *value)
1155 {
1156 u8 *hash;
1157
1158 if (os_strcmp(value, "NULL") == 0) {
1159 wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
1160 os_free(ssid->eap.password);
1161 ssid->eap.password = NULL;
1162 ssid->eap.password_len = 0;
1163 return 0;
1164 }
1165
1166 #ifdef CONFIG_EXT_PASSWORD
1167 if (os_strncmp(value, "ext:", 4) == 0) {
1168 char *name = os_strdup(value + 4);
1169 if (name == NULL)
1170 return -1;
1171 os_free(ssid->eap.password);
1172 ssid->eap.password = (u8 *) name;
1173 ssid->eap.password_len = os_strlen(name);
1174 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1175 ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD;
1176 return 0;
1177 }
1178 #endif /* CONFIG_EXT_PASSWORD */
1179
1180 if (os_strncmp(value, "hash:", 5) != 0) {
1181 char *tmp;
1182 size_t res_len;
1183
1184 tmp = wpa_config_parse_string(value, &res_len);
1185 if (tmp == NULL) {
1186 wpa_printf(MSG_ERROR, "Line %d: failed to parse "
1187 "password.", line);
1188 return -1;
1189 }
1190 wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
1191 (u8 *) tmp, res_len);
1192
1193 os_free(ssid->eap.password);
1194 ssid->eap.password = (u8 *) tmp;
1195 ssid->eap.password_len = res_len;
1196 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1197 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1198
1199 return 0;
1200 }
1201
1202
1203 /* NtPasswordHash: hash:<32 hex digits> */
1204 if (os_strlen(value + 5) != 2 * 16) {
1205 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length "
1206 "(expected 32 hex digits)", line);
1207 return -1;
1208 }
1209
1210 hash = os_malloc(16);
1211 if (hash == NULL)
1212 return -1;
1213
1214 if (hexstr2bin(value + 5, hash, 16)) {
1215 os_free(hash);
1216 wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
1217 return -1;
1218 }
1219
1220 wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
1221
1222 os_free(ssid->eap.password);
1223 ssid->eap.password = hash;
1224 ssid->eap.password_len = 16;
1225 ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1226 ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1227
1228 return 0;
1229 }
1230
1231
1232 static char * wpa_config_write_password(const struct parse_data *data,
1233 struct wpa_ssid *ssid)
1234 {
1235 char *buf;
1236
1237 if (ssid->eap.password == NULL)
1238 return NULL;
1239
1240 #ifdef CONFIG_EXT_PASSWORD
1241 if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) {
1242 buf = os_zalloc(4 + ssid->eap.password_len + 1);
1243 if (buf == NULL)
1244 return NULL;
1245 os_memcpy(buf, "ext:", 4);
1246 os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len);
1247 return buf;
1248 }
1249 #endif /* CONFIG_EXT_PASSWORD */
1250
1251 if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
1252 return wpa_config_write_string(
1253 ssid->eap.password, ssid->eap.password_len);
1254 }
1255
1256 buf = os_malloc(5 + 32 + 1);
1257 if (buf == NULL)
1258 return NULL;
1259
1260 os_memcpy(buf, "hash:", 5);
1261 wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
1262
1263 return buf;
1264 }
1265 #endif /* IEEE8021X_EAPOL */
1266
1267
1268 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
1269 const char *value, int idx)
1270 {
1271 char *buf, title[20];
1272 int res;
1273
1274 buf = wpa_config_parse_string(value, len);
1275 if (buf == NULL) {
1276 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
1277 line, idx, value);
1278 return -1;
1279 }
1280 if (*len > MAX_WEP_KEY_LEN) {
1281 wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
1282 line, idx, value);
1283 os_free(buf);
1284 return -1;
1285 }
1286 if (*len && *len != 5 && *len != 13 && *len != 16) {
1287 wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - "
1288 "this network block will be ignored",
1289 line, (unsigned int) *len);
1290 }
1291 os_memcpy(key, buf, *len);
1292 os_free(buf);
1293 res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
1294 if (res >= 0 && (size_t) res < sizeof(title))
1295 wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
1296 return 0;
1297 }
1298
1299
1300 static int wpa_config_parse_wep_key0(const struct parse_data *data,
1301 struct wpa_ssid *ssid, int line,
1302 const char *value)
1303 {
1304 return wpa_config_parse_wep_key(ssid->wep_key[0],
1305 &ssid->wep_key_len[0], line,
1306 value, 0);
1307 }
1308
1309
1310 static int wpa_config_parse_wep_key1(const struct parse_data *data,
1311 struct wpa_ssid *ssid, int line,
1312 const char *value)
1313 {
1314 return wpa_config_parse_wep_key(ssid->wep_key[1],
1315 &ssid->wep_key_len[1], line,
1316 value, 1);
1317 }
1318
1319
1320 static int wpa_config_parse_wep_key2(const struct parse_data *data,
1321 struct wpa_ssid *ssid, int line,
1322 const char *value)
1323 {
1324 return wpa_config_parse_wep_key(ssid->wep_key[2],
1325 &ssid->wep_key_len[2], line,
1326 value, 2);
1327 }
1328
1329
1330 static int wpa_config_parse_wep_key3(const struct parse_data *data,
1331 struct wpa_ssid *ssid, int line,
1332 const char *value)
1333 {
1334 return wpa_config_parse_wep_key(ssid->wep_key[3],
1335 &ssid->wep_key_len[3], line,
1336 value, 3);
1337 }
1338
1339
1340 #ifndef NO_CONFIG_WRITE
1341 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
1342 {
1343 if (ssid->wep_key_len[idx] == 0)
1344 return NULL;
1345 return wpa_config_write_string(ssid->wep_key[idx],
1346 ssid->wep_key_len[idx]);
1347 }
1348
1349
1350 static char * wpa_config_write_wep_key0(const struct parse_data *data,
1351 struct wpa_ssid *ssid)
1352 {
1353 return wpa_config_write_wep_key(ssid, 0);
1354 }
1355
1356
1357 static char * wpa_config_write_wep_key1(const struct parse_data *data,
1358 struct wpa_ssid *ssid)
1359 {
1360 return wpa_config_write_wep_key(ssid, 1);
1361 }
1362
1363
1364 static char * wpa_config_write_wep_key2(const struct parse_data *data,
1365 struct wpa_ssid *ssid)
1366 {
1367 return wpa_config_write_wep_key(ssid, 2);
1368 }
1369
1370
1371 static char * wpa_config_write_wep_key3(const struct parse_data *data,
1372 struct wpa_ssid *ssid)
1373 {
1374 return wpa_config_write_wep_key(ssid, 3);
1375 }
1376 #endif /* NO_CONFIG_WRITE */
1377
1378
1379 #ifdef CONFIG_P2P
1380
1381 static int wpa_config_parse_p2p_client_list(const struct parse_data *data,
1382 struct wpa_ssid *ssid, int line,
1383 const char *value)
1384 {
1385 const char *pos;
1386 u8 *buf, *n, addr[ETH_ALEN];
1387 size_t count;
1388
1389 buf = NULL;
1390 count = 0;
1391
1392 pos = value;
1393 while (pos && *pos) {
1394 while (*pos == ' ')
1395 pos++;
1396
1397 if (hwaddr_aton(pos, addr)) {
1398 if (count == 0) {
1399 wpa_printf(MSG_ERROR, "Line %d: Invalid "
1400 "p2p_client_list address '%s'.",
1401 line, value);
1402 os_free(buf);
1403 return -1;
1404 }
1405 /* continue anyway since this could have been from a
1406 * truncated configuration file line */
1407 wpa_printf(MSG_INFO, "Line %d: Ignore likely "
1408 "truncated p2p_client_list address '%s'",
1409 line, pos);
1410 } else {
1411 n = os_realloc_array(buf, count + 1, ETH_ALEN);
1412 if (n == NULL) {
1413 os_free(buf);
1414 return -1;
1415 }
1416 buf = n;
1417 os_memmove(buf + ETH_ALEN, buf, count * ETH_ALEN);
1418 os_memcpy(buf, addr, ETH_ALEN);
1419 count++;
1420 wpa_hexdump(MSG_MSGDUMP, "p2p_client_list",
1421 addr, ETH_ALEN);
1422 }
1423
1424 pos = os_strchr(pos, ' ');
1425 }
1426
1427 os_free(ssid->p2p_client_list);
1428 ssid->p2p_client_list = buf;
1429 ssid->num_p2p_clients = count;
1430
1431 return 0;
1432 }
1433
1434
1435 #ifndef NO_CONFIG_WRITE
1436 static char * wpa_config_write_p2p_client_list(const struct parse_data *data,
1437 struct wpa_ssid *ssid)
1438 {
1439 char *value, *end, *pos;
1440 int res;
1441 size_t i;
1442
1443 if (ssid->p2p_client_list == NULL || ssid->num_p2p_clients == 0)
1444 return NULL;
1445
1446 value = os_malloc(20 * ssid->num_p2p_clients);
1447 if (value == NULL)
1448 return NULL;
1449 pos = value;
1450 end = value + 20 * ssid->num_p2p_clients;
1451
1452 for (i = ssid->num_p2p_clients; i > 0; i--) {
1453 res = os_snprintf(pos, end - pos, MACSTR " ",
1454 MAC2STR(ssid->p2p_client_list +
1455 (i - 1) * ETH_ALEN));
1456 if (res < 0 || res >= end - pos) {
1457 os_free(value);
1458 return NULL;
1459 }
1460 pos += res;
1461 }
1462
1463 if (pos > value)
1464 pos[-1] = '\0';
1465
1466 return value;
1467 }
1468 #endif /* NO_CONFIG_WRITE */
1469
1470 #endif /* CONFIG_P2P */
1471
1472 /* Helper macros for network block parser */
1473
1474 #ifdef OFFSET
1475 #undef OFFSET
1476 #endif /* OFFSET */
1477 /* OFFSET: Get offset of a variable within the wpa_ssid structure */
1478 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
1479
1480 /* STR: Define a string variable for an ASCII string; f = field name */
1481 #ifdef NO_CONFIG_WRITE
1482 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
1483 #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f)
1484 #else /* NO_CONFIG_WRITE */
1485 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
1486 #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f)
1487 #endif /* NO_CONFIG_WRITE */
1488 #define STR(f) _STR(f), NULL, NULL, NULL, 0
1489 #define STRe(f) _STRe(f), NULL, NULL, NULL, 0
1490 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
1491 #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1
1492
1493 /* STR_LEN: Define a string variable with a separate variable for storing the
1494 * data length. Unlike STR(), this can be used to store arbitrary binary data
1495 * (i.e., even nul termination character). */
1496 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
1497 #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len)
1498 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
1499 #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0
1500 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
1501
1502 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
1503 * explicitly specified. */
1504 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
1505 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
1506 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
1507
1508 #ifdef NO_CONFIG_WRITE
1509 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
1510 #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0
1511 #else /* NO_CONFIG_WRITE */
1512 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1513 OFFSET(f), (void *) 0
1514 #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \
1515 OFFSET(eap.f), (void *) 0
1516 #endif /* NO_CONFIG_WRITE */
1517
1518 /* INT: Define an integer variable */
1519 #define INT(f) _INT(f), NULL, NULL, 0
1520 #define INTe(f) _INTe(f), NULL, NULL, 0
1521
1522 /* INT_RANGE: Define an integer variable with allowed value range */
1523 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
1524
1525 /* FUNC: Define a configuration variable that uses a custom function for
1526 * parsing and writing the value. */
1527 #ifdef NO_CONFIG_WRITE
1528 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
1529 #else /* NO_CONFIG_WRITE */
1530 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
1531 NULL, NULL, NULL, NULL
1532 #endif /* NO_CONFIG_WRITE */
1533 #define FUNC(f) _FUNC(f), 0
1534 #define FUNC_KEY(f) _FUNC(f), 1
1535
1536 /*
1537 * Table of network configuration variables. This table is used to parse each
1538 * network configuration variable, e.g., each line in wpa_supplicant.conf file
1539 * that is inside a network block.
1540 *
1541 * This table is generated using the helper macros defined above and with
1542 * generous help from the C pre-processor. The field name is stored as a string
1543 * into .name and for STR and INT types, the offset of the target buffer within
1544 * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
1545 * offset to the field containing the length of the configuration variable.
1546 * .param3 and .param4 can be used to mark the allowed range (length for STR
1547 * and value for INT).
1548 *
1549 * For each configuration line in wpa_supplicant.conf, the parser goes through
1550 * this table and select the entry that matches with the field name. The parser
1551 * function (.parser) is then called to parse the actual value of the field.
1552 *
1553 * This kind of mechanism makes it easy to add new configuration parameters,
1554 * since only one line needs to be added into this table and into the
1555 * struct wpa_ssid definition if the new variable is either a string or
1556 * integer. More complex types will need to use their own parser and writer
1557 * functions.
1558 */
1559 static const struct parse_data ssid_fields[] = {
1560 { STR_RANGE(ssid, 0, MAX_SSID_LEN) },
1561 { INT_RANGE(scan_ssid, 0, 1) },
1562 { FUNC(bssid) },
1563 { FUNC_KEY(psk) },
1564 { FUNC(proto) },
1565 { FUNC(key_mgmt) },
1566 { INT(bg_scan_period) },
1567 { FUNC(pairwise) },
1568 { FUNC(group) },
1569 { FUNC(auth_alg) },
1570 { FUNC(scan_freq) },
1571 { FUNC(freq_list) },
1572 #ifdef IEEE8021X_EAPOL
1573 { FUNC(eap) },
1574 { STR_LENe(identity) },
1575 { STR_LENe(anonymous_identity) },
1576 { FUNC_KEY(password) },
1577 { STRe(ca_cert) },
1578 { STRe(ca_path) },
1579 { STRe(client_cert) },
1580 { STRe(private_key) },
1581 { STR_KEYe(private_key_passwd) },
1582 { STRe(dh_file) },
1583 { STRe(subject_match) },
1584 { STRe(altsubject_match) },
1585 { STRe(ca_cert2) },
1586 { STRe(ca_path2) },
1587 { STRe(client_cert2) },
1588 { STRe(private_key2) },
1589 { STR_KEYe(private_key2_passwd) },
1590 { STRe(dh_file2) },
1591 { STRe(subject_match2) },
1592 { STRe(altsubject_match2) },
1593 { STRe(phase1) },
1594 { STRe(phase2) },
1595 { STRe(pcsc) },
1596 { STR_KEYe(pin) },
1597 { STRe(engine_id) },
1598 { STRe(key_id) },
1599 { STRe(cert_id) },
1600 { STRe(ca_cert_id) },
1601 { STR_KEYe(pin2) },
1602 { STRe(engine2_id) },
1603 { STRe(key2_id) },
1604 { STRe(cert2_id) },
1605 { STRe(ca_cert2_id) },
1606 { INTe(engine) },
1607 { INTe(engine2) },
1608 { INT(eapol_flags) },
1609 #endif /* IEEE8021X_EAPOL */
1610 { FUNC_KEY(wep_key0) },
1611 { FUNC_KEY(wep_key1) },
1612 { FUNC_KEY(wep_key2) },
1613 { FUNC_KEY(wep_key3) },
1614 { INT(wep_tx_keyidx) },
1615 { INT(priority) },
1616 #ifdef IEEE8021X_EAPOL
1617 { INT(eap_workaround) },
1618 { STRe(pac_file) },
1619 { INTe(fragment_size) },
1620 #endif /* IEEE8021X_EAPOL */
1621 { INT_RANGE(mode, 0, 4) },
1622 { INT_RANGE(proactive_key_caching, 0, 1) },
1623 { INT_RANGE(disabled, 0, 2) },
1624 { STR(id_str) },
1625 #ifdef CONFIG_IEEE80211W
1626 { INT_RANGE(ieee80211w, 0, 2) },
1627 #endif /* CONFIG_IEEE80211W */
1628 { INT_RANGE(peerkey, 0, 1) },
1629 { INT_RANGE(mixed_cell, 0, 1) },
1630 { INT_RANGE(frequency, 0, 10000) },
1631 { INT(wpa_ptk_rekey) },
1632 { STR(bgscan) },
1633 { INT_RANGE(ignore_broadcast_ssid, 0, 2) },
1634 #ifdef CONFIG_P2P
1635 { FUNC(p2p_client_list) },
1636 #endif /* CONFIG_P2P */
1637 #ifdef CONFIG_HT_OVERRIDES
1638 { INT_RANGE(disable_ht, 0, 1) },
1639 { INT_RANGE(disable_ht40, -1, 1) },
1640 { INT_RANGE(disable_max_amsdu, -1, 1) },
1641 { INT_RANGE(ampdu_factor, -1, 3) },
1642 { INT_RANGE(ampdu_density, -1, 7) },
1643 { STR(ht_mcs) },
1644 #endif /* CONFIG_HT_OVERRIDES */
1645 { INT(ap_max_inactivity) },
1646 { INT(dtim_period) },
1647 };
1648
1649 #undef OFFSET
1650 #undef _STR
1651 #undef STR
1652 #undef STR_KEY
1653 #undef _STR_LEN
1654 #undef STR_LEN
1655 #undef STR_LEN_KEY
1656 #undef _STR_RANGE
1657 #undef STR_RANGE
1658 #undef STR_RANGE_KEY
1659 #undef _INT
1660 #undef INT
1661 #undef INT_RANGE
1662 #undef _FUNC
1663 #undef FUNC
1664 #undef FUNC_KEY
1665 #define NUM_SSID_FIELDS (sizeof(ssid_fields) / sizeof(ssid_fields[0]))
1666
1667
1668 /**
1669 * wpa_config_add_prio_network - Add a network to priority lists
1670 * @config: Configuration data from wpa_config_read()
1671 * @ssid: Pointer to the network configuration to be added to the list
1672 * Returns: 0 on success, -1 on failure
1673 *
1674 * This function is used to add a network block to the priority list of
1675 * networks. This must be called for each network when reading in the full
1676 * configuration. In addition, this can be used indirectly when updating
1677 * priorities by calling wpa_config_update_prio_list().
1678 */
1679 int wpa_config_add_prio_network(struct wpa_config *config,
1680 struct wpa_ssid *ssid)
1681 {
1682 int prio;
1683 struct wpa_ssid *prev, **nlist;
1684
1685 /*
1686 * Add to an existing priority list if one is available for the
1687 * configured priority level for this network.
1688 */
1689 for (prio = 0; prio < config->num_prio; prio++) {
1690 prev = config->pssid[prio];
1691 if (prev->priority == ssid->priority) {
1692 while (prev->pnext)
1693 prev = prev->pnext;
1694 prev->pnext = ssid;
1695 return 0;
1696 }
1697 }
1698
1699 /* First network for this priority - add a new priority list */
1700 nlist = os_realloc_array(config->pssid, config->num_prio + 1,
1701 sizeof(struct wpa_ssid *));
1702 if (nlist == NULL)
1703 return -1;
1704
1705 for (prio = 0; prio < config->num_prio; prio++) {
1706 if (nlist[prio]->priority < ssid->priority) {
1707 os_memmove(&nlist[prio + 1], &nlist[prio],
1708 (config->num_prio - prio) *
1709 sizeof(struct wpa_ssid *));
1710 break;
1711 }
1712 }
1713
1714 nlist[prio] = ssid;
1715 config->num_prio++;
1716 config->pssid = nlist;
1717
1718 return 0;
1719 }
1720
1721
1722 /**
1723 * wpa_config_update_prio_list - Update network priority list
1724 * @config: Configuration data from wpa_config_read()
1725 * Returns: 0 on success, -1 on failure
1726 *
1727 * This function is called to update the priority list of networks in the
1728 * configuration when a network is being added or removed. This is also called
1729 * if a priority for a network is changed.
1730 */
1731 int wpa_config_update_prio_list(struct wpa_config *config)
1732 {
1733 struct wpa_ssid *ssid;
1734 int ret = 0;
1735
1736 os_free(config->pssid);
1737 config->pssid = NULL;
1738 config->num_prio = 0;
1739
1740 ssid = config->ssid;
1741 while (ssid) {
1742 ssid->pnext = NULL;
1743 if (wpa_config_add_prio_network(config, ssid) < 0)
1744 ret = -1;
1745 ssid = ssid->next;
1746 }
1747
1748 return ret;
1749 }
1750
1751
1752 #ifdef IEEE8021X_EAPOL
1753 static void eap_peer_config_free(struct eap_peer_config *eap)
1754 {
1755 os_free(eap->eap_methods);
1756 os_free(eap->identity);
1757 os_free(eap->anonymous_identity);
1758 os_free(eap->password);
1759 os_free(eap->ca_cert);
1760 os_free(eap->ca_path);
1761 os_free(eap->client_cert);
1762 os_free(eap->private_key);
1763 os_free(eap->private_key_passwd);
1764 os_free(eap->dh_file);
1765 os_free(eap->subject_match);
1766 os_free(eap->altsubject_match);
1767 os_free(eap->ca_cert2);
1768 os_free(eap->ca_path2);
1769 os_free(eap->client_cert2);
1770 os_free(eap->private_key2);
1771 os_free(eap->private_key2_passwd);
1772 os_free(eap->dh_file2);
1773 os_free(eap->subject_match2);
1774 os_free(eap->altsubject_match2);
1775 os_free(eap->phase1);
1776 os_free(eap->phase2);
1777 os_free(eap->pcsc);
1778 os_free(eap->pin);
1779 os_free(eap->engine_id);
1780 os_free(eap->key_id);
1781 os_free(eap->cert_id);
1782 os_free(eap->ca_cert_id);
1783 os_free(eap->key2_id);
1784 os_free(eap->cert2_id);
1785 os_free(eap->ca_cert2_id);
1786 os_free(eap->pin2);
1787 os_free(eap->engine2_id);
1788 os_free(eap->otp);
1789 os_free(eap->pending_req_otp);
1790 os_free(eap->pac_file);
1791 os_free(eap->new_password);
1792 }
1793 #endif /* IEEE8021X_EAPOL */
1794
1795
1796 /**
1797 * wpa_config_free_ssid - Free network/ssid configuration data
1798 * @ssid: Configuration data for the network
1799 *
1800 * This function frees all resources allocated for the network configuration
1801 * data.
1802 */
1803 void wpa_config_free_ssid(struct wpa_ssid *ssid)
1804 {
1805 os_free(ssid->ssid);
1806 os_free(ssid->passphrase);
1807 os_free(ssid->ext_psk);
1808 #ifdef IEEE8021X_EAPOL
1809 eap_peer_config_free(&ssid->eap);
1810 #endif /* IEEE8021X_EAPOL */
1811 os_free(ssid->id_str);
1812 os_free(ssid->scan_freq);
1813 os_free(ssid->freq_list);
1814 os_free(ssid->bgscan);
1815 os_free(ssid->p2p_client_list);
1816 #ifdef CONFIG_HT_OVERRIDES
1817 os_free(ssid->ht_mcs);
1818 #endif /* CONFIG_HT_OVERRIDES */
1819 os_free(ssid);
1820 }
1821
1822
1823 void wpa_config_free_cred(struct wpa_cred *cred)
1824 {
1825 os_free(cred->realm);
1826 os_free(cred->username);
1827 os_free(cred->password);
1828 os_free(cred->ca_cert);
1829 os_free(cred->client_cert);
1830 os_free(cred->private_key);
1831 os_free(cred->private_key_passwd);
1832 os_free(cred->imsi);
1833 os_free(cred->milenage);
1834 os_free(cred->domain);
1835 os_free(cred->eap_method);
1836 os_free(cred->phase1);
1837 os_free(cred->phase2);
1838 os_free(cred->excluded_ssid);
1839 os_free(cred);
1840 }
1841
1842
1843 /**
1844 * wpa_config_free - Free configuration data
1845 * @config: Configuration data from wpa_config_read()
1846 *
1847 * This function frees all resources allocated for the configuration data by
1848 * wpa_config_read().
1849 */
1850 void wpa_config_free(struct wpa_config *config)
1851 {
1852 #ifndef CONFIG_NO_CONFIG_BLOBS
1853 struct wpa_config_blob *blob, *prevblob;
1854 #endif /* CONFIG_NO_CONFIG_BLOBS */
1855 struct wpa_ssid *ssid, *prev = NULL;
1856 struct wpa_cred *cred, *cprev;
1857
1858 ssid = config->ssid;
1859 while (ssid) {
1860 prev = ssid;
1861 ssid = ssid->next;
1862 wpa_config_free_ssid(prev);
1863 }
1864
1865 cred = config->cred;
1866 while (cred) {
1867 cprev = cred;
1868 cred = cred->next;
1869 wpa_config_free_cred(cprev);
1870 }
1871
1872 #ifndef CONFIG_NO_CONFIG_BLOBS
1873 blob = config->blobs;
1874 prevblob = NULL;
1875 while (blob) {
1876 prevblob = blob;
1877 blob = blob->next;
1878 wpa_config_free_blob(prevblob);
1879 }
1880 #endif /* CONFIG_NO_CONFIG_BLOBS */
1881
1882 wpabuf_free(config->wps_vendor_ext_m1);
1883 os_free(config->ctrl_interface);
1884 os_free(config->ctrl_interface_group);
1885 os_free(config->opensc_engine_path);
1886 os_free(config->pkcs11_engine_path);
1887 os_free(config->pkcs11_module_path);
1888 os_free(config->pcsc_reader);
1889 os_free(config->pcsc_pin);
1890 os_free(config->driver_param);
1891 os_free(config->device_name);
1892 os_free(config->manufacturer);
1893 os_free(config->model_name);
1894 os_free(config->model_number);
1895 os_free(config->serial_number);
1896 os_free(config->config_methods);
1897 os_free(config->p2p_ssid_postfix);
1898 os_free(config->pssid);
1899 os_free(config->p2p_pref_chan);
1900 os_free(config->autoscan);
1901 wpabuf_free(config->wps_nfc_dh_pubkey);
1902 wpabuf_free(config->wps_nfc_dh_privkey);
1903 wpabuf_free(config->wps_nfc_dev_pw);
1904 os_free(config->ext_password_backend);
1905 os_free(config);
1906 }
1907
1908
1909 /**
1910 * wpa_config_foreach_network - Iterate over each configured network
1911 * @config: Configuration data from wpa_config_read()
1912 * @func: Callback function to process each network
1913 * @arg: Opaque argument to pass to callback function
1914 *
1915 * Iterate over the set of configured networks calling the specified
1916 * function for each item. We guard against callbacks removing the
1917 * supplied network.
1918 */
1919 void wpa_config_foreach_network(struct wpa_config *config,
1920 void (*func)(void *, struct wpa_ssid *),
1921 void *arg)
1922 {
1923 struct wpa_ssid *ssid, *next;
1924
1925 ssid = config->ssid;
1926 while (ssid) {
1927 next = ssid->next;
1928 func(arg, ssid);
1929 ssid = next;
1930 }
1931 }
1932
1933
1934 /**
1935 * wpa_config_get_network - Get configured network based on id
1936 * @config: Configuration data from wpa_config_read()
1937 * @id: Unique network id to search for
1938 * Returns: Network configuration or %NULL if not found
1939 */
1940 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
1941 {
1942 struct wpa_ssid *ssid;
1943
1944 ssid = config->ssid;
1945 while (ssid) {
1946 if (id == ssid->id)
1947 break;
1948 ssid = ssid->next;
1949 }
1950
1951 return ssid;
1952 }
1953
1954
1955 /**
1956 * wpa_config_add_network - Add a new network with empty configuration
1957 * @config: Configuration data from wpa_config_read()
1958 * Returns: The new network configuration or %NULL if operation failed
1959 */
1960 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
1961 {
1962 int id;
1963 struct wpa_ssid *ssid, *last = NULL;
1964
1965 id = -1;
1966 ssid = config->ssid;
1967 while (ssid) {
1968 if (ssid->id > id)
1969 id = ssid->id;
1970 last = ssid;
1971 ssid = ssid->next;
1972 }
1973 id++;
1974
1975 ssid = os_zalloc(sizeof(*ssid));
1976 if (ssid == NULL)
1977 return NULL;
1978 ssid->id = id;
1979 if (last)
1980 last->next = ssid;
1981 else
1982 config->ssid = ssid;
1983
1984 wpa_config_update_prio_list(config);
1985
1986 return ssid;
1987 }
1988
1989
1990 /**
1991 * wpa_config_remove_network - Remove a configured network based on id
1992 * @config: Configuration data from wpa_config_read()
1993 * @id: Unique network id to search for
1994 * Returns: 0 on success, or -1 if the network was not found
1995 */
1996 int wpa_config_remove_network(struct wpa_config *config, int id)
1997 {
1998 struct wpa_ssid *ssid, *prev = NULL;
1999
2000 ssid = config->ssid;
2001 while (ssid) {
2002 if (id == ssid->id)
2003 break;
2004 prev = ssid;
2005 ssid = ssid->next;
2006 }
2007
2008 if (ssid == NULL)
2009 return -1;
2010
2011 if (prev)
2012 prev->next = ssid->next;
2013 else
2014 config->ssid = ssid->next;
2015
2016 wpa_config_update_prio_list(config);
2017 wpa_config_free_ssid(ssid);
2018 return 0;
2019 }
2020
2021
2022 /**
2023 * wpa_config_set_network_defaults - Set network default values
2024 * @ssid: Pointer to network configuration data
2025 */
2026 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
2027 {
2028 ssid->proto = DEFAULT_PROTO;
2029 ssid->pairwise_cipher = DEFAULT_PAIRWISE;
2030 ssid->group_cipher = DEFAULT_GROUP;
2031 ssid->key_mgmt = DEFAULT_KEY_MGMT;
2032 ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
2033 #ifdef IEEE8021X_EAPOL
2034 ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
2035 ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
2036 ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
2037 #endif /* IEEE8021X_EAPOL */
2038 #ifdef CONFIG_HT_OVERRIDES
2039 ssid->disable_ht = DEFAULT_DISABLE_HT;
2040 ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
2041 ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
2042 ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
2043 ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
2044 #endif /* CONFIG_HT_OVERRIDES */
2045 ssid->proactive_key_caching = -1;
2046 #ifdef CONFIG_IEEE80211W
2047 ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
2048 #endif /* CONFIG_IEEE80211W */
2049 }
2050
2051
2052 /**
2053 * wpa_config_set - Set a variable in network configuration
2054 * @ssid: Pointer to network configuration data
2055 * @var: Variable name, e.g., "ssid"
2056 * @value: Variable value
2057 * @line: Line number in configuration file or 0 if not used
2058 * Returns: 0 on success, -1 on failure
2059 *
2060 * This function can be used to set network configuration variables based on
2061 * both the configuration file and management interface input. The value
2062 * parameter must be in the same format as the text-based configuration file is
2063 * using. For example, strings are using double quotation marks.
2064 */
2065 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
2066 int line)
2067 {
2068 size_t i;
2069 int ret = 0;
2070
2071 if (ssid == NULL || var == NULL || value == NULL)
2072 return -1;
2073
2074 for (i = 0; i < NUM_SSID_FIELDS; i++) {
2075 const struct parse_data *field = &ssid_fields[i];
2076 if (os_strcmp(var, field->name) != 0)
2077 continue;
2078
2079 if (field->parser(field, ssid, line, value)) {
2080 if (line) {
2081 wpa_printf(MSG_ERROR, "Line %d: failed to "
2082 "parse %s '%s'.", line, var, value);
2083 }
2084 ret = -1;
2085 }
2086 break;
2087 }
2088 if (i == NUM_SSID_FIELDS) {
2089 if (line) {
2090 wpa_printf(MSG_ERROR, "Line %d: unknown network field "
2091 "'%s'.", line, var);
2092 }
2093 ret = -1;
2094 }
2095
2096 return ret;
2097 }
2098
2099
2100 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
2101 const char *value)
2102 {
2103 size_t len;
2104 char *buf;
2105 int ret;
2106
2107 len = os_strlen(value);
2108 buf = os_malloc(len + 3);
2109 if (buf == NULL)
2110 return -1;
2111 buf[0] = '"';
2112 os_memcpy(buf + 1, value, len);
2113 buf[len + 1] = '"';
2114 buf[len + 2] = '\0';
2115 ret = wpa_config_set(ssid, var, buf, 0);
2116 os_free(buf);
2117 return ret;
2118 }
2119
2120
2121 /**
2122 * wpa_config_get_all - Get all options from network configuration
2123 * @ssid: Pointer to network configuration data
2124 * @get_keys: Determines if keys/passwords will be included in returned list
2125 * (if they may be exported)
2126 * Returns: %NULL terminated list of all set keys and their values in the form
2127 * of [key1, val1, key2, val2, ... , NULL]
2128 *
2129 * This function can be used to get list of all configured network properties.
2130 * The caller is responsible for freeing the returned list and all its
2131 * elements.
2132 */
2133 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
2134 {
2135 const struct parse_data *field;
2136 char *key, *value;
2137 size_t i;
2138 char **props;
2139 int fields_num;
2140
2141 get_keys = get_keys && ssid->export_keys;
2142
2143 props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
2144 if (!props)
2145 return NULL;
2146
2147 fields_num = 0;
2148 for (i = 0; i < NUM_SSID_FIELDS; i++) {
2149 field = &ssid_fields[i];
2150 if (field->key_data && !get_keys)
2151 continue;
2152 value = field->writer(field, ssid);
2153 if (value == NULL)
2154 continue;
2155 if (os_strlen(value) == 0) {
2156 os_free(value);
2157 continue;
2158 }
2159
2160 key = os_strdup(field->name);
2161 if (key == NULL) {
2162 os_free(value);
2163 goto err;
2164 }
2165
2166 props[fields_num * 2] = key;
2167 props[fields_num * 2 + 1] = value;
2168
2169 fields_num++;
2170 }
2171
2172 return props;
2173
2174 err:
2175 value = *props;
2176 while (value)
2177 os_free(value++);
2178 os_free(props);
2179 return NULL;
2180 }
2181
2182
2183 #ifndef NO_CONFIG_WRITE
2184 /**
2185 * wpa_config_get - Get a variable in network configuration
2186 * @ssid: Pointer to network configuration data
2187 * @var: Variable name, e.g., "ssid"
2188 * Returns: Value of the variable or %NULL on failure
2189 *
2190 * This function can be used to get network configuration variables. The
2191 * returned value is a copy of the configuration variable in text format, i.e,.
2192 * the same format that the text-based configuration file and wpa_config_set()
2193 * are using for the value. The caller is responsible for freeing the returned
2194 * value.
2195 */
2196 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
2197 {
2198 size_t i;
2199
2200 if (ssid == NULL || var == NULL)
2201 return NULL;
2202
2203 for (i = 0; i < NUM_SSID_FIELDS; i++) {
2204 const struct parse_data *field = &ssid_fields[i];
2205 if (os_strcmp(var, field->name) == 0)
2206 return field->writer(field, ssid);
2207 }
2208
2209 return NULL;
2210 }
2211
2212
2213 /**
2214 * wpa_config_get_no_key - Get a variable in network configuration (no keys)
2215 * @ssid: Pointer to network configuration data
2216 * @var: Variable name, e.g., "ssid"
2217 * Returns: Value of the variable or %NULL on failure
2218 *
2219 * This function can be used to get network configuration variable like
2220 * wpa_config_get(). The only difference is that this functions does not expose
2221 * key/password material from the configuration. In case a key/password field
2222 * is requested, the returned value is an empty string or %NULL if the variable
2223 * is not set or "*" if the variable is set (regardless of its value). The
2224 * returned value is a copy of the configuration variable in text format, i.e,.
2225 * the same format that the text-based configuration file and wpa_config_set()
2226 * are using for the value. The caller is responsible for freeing the returned
2227 * value.
2228 */
2229 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
2230 {
2231 size_t i;
2232
2233 if (ssid == NULL || var == NULL)
2234 return NULL;
2235
2236 for (i = 0; i < NUM_SSID_FIELDS; i++) {
2237 const struct parse_data *field = &ssid_fields[i];
2238 if (os_strcmp(var, field->name) == 0) {
2239 char *res = field->writer(field, ssid);
2240 if (field->key_data) {
2241 if (res && res[0]) {
2242 wpa_printf(MSG_DEBUG, "Do not allow "
2243 "key_data field to be "
2244 "exposed");
2245 os_free(res);
2246 return os_strdup("*");
2247 }
2248
2249 os_free(res);
2250 return NULL;
2251 }
2252 return res;
2253 }
2254 }
2255
2256 return NULL;
2257 }
2258 #endif /* NO_CONFIG_WRITE */
2259
2260
2261 /**
2262 * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
2263 * @ssid: Pointer to network configuration data
2264 *
2265 * This function must be called to update WPA PSK when either SSID or the
2266 * passphrase has changed for the network configuration.
2267 */
2268 void wpa_config_update_psk(struct wpa_ssid *ssid)
2269 {
2270 #ifndef CONFIG_NO_PBKDF2
2271 pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
2272 ssid->psk, PMK_LEN);
2273 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
2274 ssid->psk, PMK_LEN);
2275 ssid->psk_set = 1;
2276 #endif /* CONFIG_NO_PBKDF2 */
2277 }
2278
2279
2280 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
2281 const char *value, int line)
2282 {
2283 char *val;
2284 size_t len;
2285
2286 if (os_strcmp(var, "priority") == 0) {
2287 cred->priority = atoi(value);
2288 return 0;
2289 }
2290
2291 if (os_strcmp(var, "pcsc") == 0) {
2292 cred->pcsc = atoi(value);
2293 return 0;
2294 }
2295
2296 if (os_strcmp(var, "eap") == 0) {
2297 struct eap_method_type method;
2298 method.method = eap_peer_get_type(value, &method.vendor);
2299 if (method.vendor == EAP_VENDOR_IETF &&
2300 method.method == EAP_TYPE_NONE) {
2301 wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
2302 "for a credential", line, value);
2303 return -1;
2304 }
2305 os_free(cred->eap_method);
2306 cred->eap_method = os_malloc(sizeof(*cred->eap_method));
2307 if (cred->eap_method == NULL)
2308 return -1;
2309 os_memcpy(cred->eap_method, &method, sizeof(method));
2310 return 0;
2311 }
2312
2313 if (os_strcmp(var, "password") == 0 &&
2314 os_strncmp(value, "ext:", 4) == 0) {
2315 os_free(cred->password);
2316 cred->password = os_strdup(value);
2317 cred->ext_password = 1;
2318 return 0;
2319 }
2320
2321 val = wpa_config_parse_string(value, &len);
2322 if (val == NULL) {
2323 wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
2324 "value '%s'.", line, var, value);
2325 return -1;
2326 }
2327
2328 if (os_strcmp(var, "realm") == 0) {
2329 os_free(cred->realm);
2330 cred->realm = val;
2331 return 0;
2332 }
2333
2334 if (os_strcmp(var, "username") == 0) {
2335 os_free(cred->username);
2336 cred->username = val;
2337 return 0;
2338 }
2339
2340 if (os_strcmp(var, "password") == 0) {
2341 os_free(cred->password);
2342 cred->password = val;
2343 cred->ext_password = 0;
2344 return 0;
2345 }
2346
2347 if (os_strcmp(var, "ca_cert") == 0) {
2348 os_free(cred->ca_cert);
2349 cred->ca_cert = val;
2350 return 0;
2351 }
2352
2353 if (os_strcmp(var, "client_cert") == 0) {
2354 os_free(cred->client_cert);
2355 cred->client_cert = val;
2356 return 0;
2357 }
2358
2359 if (os_strcmp(var, "private_key") == 0) {
2360 os_free(cred->private_key);
2361 cred->private_key = val;
2362 return 0;
2363 }
2364
2365 if (os_strcmp(var, "private_key_passwd") == 0) {
2366 os_free(cred->private_key_passwd);
2367 cred->private_key_passwd = val;
2368 return 0;
2369 }
2370
2371 if (os_strcmp(var, "imsi") == 0) {
2372 os_free(cred->imsi);
2373 cred->imsi = val;
2374 return 0;
2375 }
2376
2377 if (os_strcmp(var, "milenage") == 0) {
2378 os_free(cred->milenage);
2379 cred->milenage = val;
2380 return 0;
2381 }
2382
2383 if (os_strcmp(var, "domain") == 0) {
2384 os_free(cred->domain);
2385 cred->domain = val;
2386 return 0;
2387 }
2388
2389 if (os_strcmp(var, "phase1") == 0) {
2390 os_free(cred->phase1);
2391 cred->phase1 = val;
2392 return 0;
2393 }
2394
2395 if (os_strcmp(var, "phase2") == 0) {
2396 os_free(cred->phase2);
2397 cred->phase2 = val;
2398 return 0;
2399 }
2400
2401 if (os_strcmp(var, "roaming_consortium") == 0) {
2402 if (len < 3 || len > sizeof(cred->roaming_consortium)) {
2403 wpa_printf(MSG_ERROR, "Line %d: invalid "
2404 "roaming_consortium length %d (3..15 "
2405 "expected)", line, (int) len);
2406 os_free(val);
2407 return -1;
2408 }
2409 os_memcpy(cred->roaming_consortium, val, len);
2410 cred->roaming_consortium_len = len;
2411 os_free(val);
2412 return 0;
2413 }
2414
2415 if (os_strcmp(var, "excluded_ssid") == 0) {
2416 struct excluded_ssid *e;
2417
2418 if (len > MAX_SSID_LEN) {
2419 wpa_printf(MSG_ERROR, "Line %d: invalid "
2420 "excluded_ssid length %d", line, (int) len);
2421 os_free(val);
2422 return -1;
2423 }
2424
2425 e = os_realloc_array(cred->excluded_ssid,
2426 cred->num_excluded_ssid + 1,
2427 sizeof(struct excluded_ssid));
2428 if (e == NULL) {
2429 os_free(val);
2430 return -1;
2431 }
2432 cred->excluded_ssid = e;
2433
2434 e = &cred->excluded_ssid[cred->num_excluded_ssid++];
2435 os_memcpy(e->ssid, val, len);
2436 e->ssid_len = len;
2437
2438 os_free(val);
2439
2440 return 0;
2441 }
2442
2443 if (line) {
2444 wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
2445 line, var);
2446 }
2447
2448 os_free(val);
2449
2450 return -1;
2451 }
2452
2453
2454 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
2455 {
2456 struct wpa_cred *cred;
2457
2458 cred = config->cred;
2459 while (cred) {
2460 if (id == cred->id)
2461 break;
2462 cred = cred->next;
2463 }
2464
2465 return cred;
2466 }
2467
2468
2469 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
2470 {
2471 int id;
2472 struct wpa_cred *cred, *last = NULL;
2473
2474 id = -1;
2475 cred = config->cred;
2476 while (cred) {
2477 if (cred->id > id)
2478 id = cred->id;
2479 last = cred;
2480 cred = cred->next;
2481 }
2482 id++;
2483
2484 cred = os_zalloc(sizeof(*cred));
2485 if (cred == NULL)
2486 return NULL;
2487 cred->id = id;
2488 if (last)
2489 last->next = cred;
2490 else
2491 config->cred = cred;
2492
2493 return cred;
2494 }
2495
2496
2497 int wpa_config_remove_cred(struct wpa_config *config, int id)
2498 {
2499 struct wpa_cred *cred, *prev = NULL;
2500
2501 cred = config->cred;
2502 while (cred) {
2503 if (id == cred->id)
2504 break;
2505 prev = cred;
2506 cred = cred->next;
2507 }
2508
2509 if (cred == NULL)
2510 return -1;
2511
2512 if (prev)
2513 prev->next = cred->next;
2514 else
2515 config->cred = cred->next;
2516
2517 wpa_config_free_cred(cred);
2518 return 0;
2519 }
2520
2521
2522 #ifndef CONFIG_NO_CONFIG_BLOBS
2523 /**
2524 * wpa_config_get_blob - Get a named configuration blob
2525 * @config: Configuration data from wpa_config_read()
2526 * @name: Name of the blob
2527 * Returns: Pointer to blob data or %NULL if not found
2528 */
2529 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
2530 const char *name)
2531 {
2532 struct wpa_config_blob *blob = config->blobs;
2533
2534 while (blob) {
2535 if (os_strcmp(blob->name, name) == 0)
2536 return blob;
2537 blob = blob->next;
2538 }
2539 return NULL;
2540 }
2541
2542
2543 /**
2544 * wpa_config_set_blob - Set or add a named configuration blob
2545 * @config: Configuration data from wpa_config_read()
2546 * @blob: New value for the blob
2547 *
2548 * Adds a new configuration blob or replaces the current value of an existing
2549 * blob.
2550 */
2551 void wpa_config_set_blob(struct wpa_config *config,
2552 struct wpa_config_blob *blob)
2553 {
2554 wpa_config_remove_blob(config, blob->name);
2555 blob->next = config->blobs;
2556 config->blobs = blob;
2557 }
2558
2559
2560 /**
2561 * wpa_config_free_blob - Free blob data
2562 * @blob: Pointer to blob to be freed
2563 */
2564 void wpa_config_free_blob(struct wpa_config_blob *blob)
2565 {
2566 if (blob) {
2567 os_free(blob->name);
2568 os_free(blob->data);
2569 os_free(blob);
2570 }
2571 }
2572
2573
2574 /**
2575 * wpa_config_remove_blob - Remove a named configuration blob
2576 * @config: Configuration data from wpa_config_read()
2577 * @name: Name of the blob to remove
2578 * Returns: 0 if blob was removed or -1 if blob was not found
2579 */
2580 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
2581 {
2582 struct wpa_config_blob *pos = config->blobs, *prev = NULL;
2583
2584 while (pos) {
2585 if (os_strcmp(pos->name, name) == 0) {
2586 if (prev)
2587 prev->next = pos->next;
2588 else
2589 config->blobs = pos->next;
2590 wpa_config_free_blob(pos);
2591 return 0;
2592 }
2593 prev = pos;
2594 pos = pos->next;
2595 }
2596
2597 return -1;
2598 }
2599 #endif /* CONFIG_NO_CONFIG_BLOBS */
2600
2601
2602 /**
2603 * wpa_config_alloc_empty - Allocate an empty configuration
2604 * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
2605 * socket
2606 * @driver_param: Driver parameters
2607 * Returns: Pointer to allocated configuration data or %NULL on failure
2608 */
2609 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
2610 const char *driver_param)
2611 {
2612 struct wpa_config *config;
2613 const int aCWmin = 4, aCWmax = 10;
2614 const struct hostapd_wmm_ac_params ac_bk =
2615 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
2616 const struct hostapd_wmm_ac_params ac_be =
2617 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
2618 const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
2619 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
2620 const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
2621 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
2622
2623 config = os_zalloc(sizeof(*config));
2624 if (config == NULL)
2625 return NULL;
2626 config->eapol_version = DEFAULT_EAPOL_VERSION;
2627 config->ap_scan = DEFAULT_AP_SCAN;
2628 config->fast_reauth = DEFAULT_FAST_REAUTH;
2629 config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
2630 config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
2631 config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
2632 config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
2633 config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
2634 config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
2635 config->max_num_sta = DEFAULT_MAX_NUM_STA;
2636 config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
2637 config->wmm_ac_params[0] = ac_be;
2638 config->wmm_ac_params[1] = ac_bk;
2639 config->wmm_ac_params[2] = ac_vi;
2640 config->wmm_ac_params[3] = ac_vo;
2641
2642 if (ctrl_interface)
2643 config->ctrl_interface = os_strdup(ctrl_interface);
2644 if (driver_param)
2645 config->driver_param = os_strdup(driver_param);
2646
2647 return config;
2648 }
2649
2650
2651 #ifndef CONFIG_NO_STDOUT_DEBUG
2652 /**
2653 * wpa_config_debug_dump_networks - Debug dump of configured networks
2654 * @config: Configuration data from wpa_config_read()
2655 */
2656 void wpa_config_debug_dump_networks(struct wpa_config *config)
2657 {
2658 int prio;
2659 struct wpa_ssid *ssid;
2660
2661 for (prio = 0; prio < config->num_prio; prio++) {
2662 ssid = config->pssid[prio];
2663 wpa_printf(MSG_DEBUG, "Priority group %d",
2664 ssid->priority);
2665 while (ssid) {
2666 wpa_printf(MSG_DEBUG, " id=%d ssid='%s'",
2667 ssid->id,
2668 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2669 ssid = ssid->pnext;
2670 }
2671 }
2672 }
2673 #endif /* CONFIG_NO_STDOUT_DEBUG */
2674
2675
2676 struct global_parse_data {
2677 char *name;
2678 int (*parser)(const struct global_parse_data *data,
2679 struct wpa_config *config, int line, const char *value);
2680 void *param1, *param2, *param3;
2681 unsigned int changed_flag;
2682 };
2683
2684
2685 static int wpa_global_config_parse_int(const struct global_parse_data *data,
2686 struct wpa_config *config, int line,
2687 const char *pos)
2688 {
2689 int *dst;
2690 dst = (int *) (((u8 *) config) + (long) data->param1);
2691 *dst = atoi(pos);
2692 wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
2693
2694 if (data->param2 && *dst < (long) data->param2) {
2695 wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
2696 "min_value=%ld)", line, data->name, *dst,
2697 (long) data->param2);
2698 *dst = (long) data->param2;
2699 return -1;
2700 }
2701
2702 if (data->param3 && *dst > (long) data->param3) {
2703 wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
2704 "max_value=%ld)", line, data->name, *dst,
2705 (long) data->param3);
2706 *dst = (long) data->param3;
2707 return -1;
2708 }
2709
2710 return 0;
2711 }
2712
2713
2714 static int wpa_global_config_parse_str(const struct global_parse_data *data,
2715 struct wpa_config *config, int line,
2716 const char *pos)
2717 {
2718 size_t len;
2719 char **dst, *tmp;
2720
2721 len = os_strlen(pos);
2722 if (data->param2 && len < (size_t) data->param2) {
2723 wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
2724 "min_len=%ld)", line, data->name,
2725 (unsigned long) len, (long) data->param2);
2726 return -1;
2727 }
2728
2729 if (data->param3 && len > (size_t) data->param3) {
2730 wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
2731 "max_len=%ld)", line, data->name,
2732 (unsigned long) len, (long) data->param3);
2733 return -1;
2734 }
2735
2736 tmp = os_strdup(pos);
2737 if (tmp == NULL)
2738 return -1;
2739
2740 dst = (char **) (((u8 *) config) + (long) data->param1);
2741 os_free(*dst);
2742 *dst = tmp;
2743 wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
2744
2745 return 0;
2746 }
2747
2748
2749 static int wpa_global_config_parse_bin(const struct global_parse_data *data,
2750 struct wpa_config *config, int line,
2751 const char *pos)
2752 {
2753 size_t len;
2754 struct wpabuf **dst, *tmp;
2755
2756 len = os_strlen(pos);
2757 if (len & 0x01)
2758 return -1;
2759
2760 tmp = wpabuf_alloc(len / 2);
2761 if (tmp == NULL)
2762 return -1;
2763
2764 if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) {
2765 wpabuf_free(tmp);
2766 return -1;
2767 }
2768
2769 dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
2770 wpabuf_free(*dst);
2771 *dst = tmp;
2772 wpa_printf(MSG_DEBUG, "%s", data->name);
2773
2774 return 0;
2775 }
2776
2777
2778 static int wpa_config_process_country(const struct global_parse_data *data,
2779 struct wpa_config *config, int line,
2780 const char *pos)
2781 {
2782 if (!pos[0] || !pos[1]) {
2783 wpa_printf(MSG_DEBUG, "Invalid country set");
2784 return -1;
2785 }
2786 config->country[0] = pos[0];
2787 config->country[1] = pos[1];
2788 wpa_printf(MSG_DEBUG, "country='%c%c'",
2789 config->country[0], config->country[1]);
2790 return 0;
2791 }
2792
2793
2794 static int wpa_config_process_load_dynamic_eap(
2795 const struct global_parse_data *data, struct wpa_config *config,
2796 int line, const char *so)
2797 {
2798 int ret;
2799 wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
2800 ret = eap_peer_method_load(so);
2801 if (ret == -2) {
2802 wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
2803 "reloading.");
2804 } else if (ret) {
2805 wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
2806 "method '%s'.", line, so);
2807 return -1;
2808 }
2809
2810 return 0;
2811 }
2812
2813
2814 #ifdef CONFIG_WPS
2815
2816 static int wpa_config_process_uuid(const struct global_parse_data *data,
2817 struct wpa_config *config, int line,
2818 const char *pos)
2819 {
2820 char buf[40];
2821 if (uuid_str2bin(pos, config->uuid)) {
2822 wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
2823 return -1;
2824 }
2825 uuid_bin2str(config->uuid, buf, sizeof(buf));
2826 wpa_printf(MSG_DEBUG, "uuid=%s", buf);
2827 return 0;
2828 }
2829
2830
2831 static int wpa_config_process_device_type(
2832 const struct global_parse_data *data,
2833 struct wpa_config *config, int line, const char *pos)
2834 {
2835 return wps_dev_type_str2bin(pos, config->device_type);
2836 }
2837
2838
2839 static int wpa_config_process_os_version(const struct global_parse_data *data,
2840 struct wpa_config *config, int line,
2841 const char *pos)
2842 {
2843 if (hexstr2bin(pos, config->os_version, 4)) {
2844 wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
2845 return -1;
2846 }
2847 wpa_printf(MSG_DEBUG, "os_version=%08x",
2848 WPA_GET_BE32(config->os_version));
2849 return 0;
2850 }
2851
2852
2853 static int wpa_config_process_wps_vendor_ext_m1(
2854 const struct global_parse_data *data,
2855 struct wpa_config *config, int line, const char *pos)
2856 {
2857 struct wpabuf *tmp;
2858 int len = os_strlen(pos) / 2;
2859 u8 *p;
2860
2861 if (!len) {
2862 wpa_printf(MSG_ERROR, "Line %d: "
2863 "invalid wps_vendor_ext_m1", line);
2864 return -1;
2865 }
2866
2867 tmp = wpabuf_alloc(len);
2868 if (tmp) {
2869 p = wpabuf_put(tmp, len);
2870
2871 if (hexstr2bin(pos, p, len)) {
2872 wpa_printf(MSG_ERROR, "Line %d: "
2873 "invalid wps_vendor_ext_m1", line);
2874 wpabuf_free(tmp);
2875 return -1;
2876 }
2877
2878 wpabuf_free(config->wps_vendor_ext_m1);
2879 config->wps_vendor_ext_m1 = tmp;
2880 } else {
2881 wpa_printf(MSG_ERROR, "Can not allocate "
2882 "memory for wps_vendor_ext_m1");
2883 return -1;
2884 }
2885
2886 return 0;
2887 }
2888
2889 #endif /* CONFIG_WPS */
2890
2891 #ifdef CONFIG_P2P
2892 static int wpa_config_process_sec_device_type(
2893 const struct global_parse_data *data,
2894 struct wpa_config *config, int line, const char *pos)
2895 {
2896 int idx;
2897
2898 if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
2899 wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
2900 "items", line);
2901 return -1;
2902 }
2903
2904 idx = config->num_sec_device_types;
2905
2906 if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
2907 return -1;
2908
2909 config->num_sec_device_types++;
2910 return 0;
2911 }
2912
2913
2914 static int wpa_config_process_p2p_pref_chan(
2915 const struct global_parse_data *data,
2916 struct wpa_config *config, int line, const char *pos)
2917 {
2918 struct p2p_channel *pref = NULL, *n;
2919 unsigned int num = 0;
2920 const char *pos2;
2921 u8 op_class, chan;
2922
2923 /* format: class:chan,class:chan,... */
2924
2925 while (*pos) {
2926 op_class = atoi(pos);
2927 pos2 = os_strchr(pos, ':');
2928 if (pos2 == NULL)
2929 goto fail;
2930 pos2++;
2931 chan = atoi(pos2);
2932
2933 n = os_realloc_array(pref, num + 1,
2934 sizeof(struct p2p_channel));
2935 if (n == NULL)
2936 goto fail;
2937 pref = n;
2938 pref[num].op_class = op_class;
2939 pref[num].chan = chan;
2940 num++;
2941
2942 pos = os_strchr(pos2, ',');
2943 if (pos == NULL)
2944 break;
2945 pos++;
2946 }
2947
2948 os_free(config->p2p_pref_chan);
2949 config->p2p_pref_chan = pref;
2950 config->num_p2p_pref_chan = num;
2951 wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
2952 (u8 *) config->p2p_pref_chan,
2953 config->num_p2p_pref_chan * sizeof(struct p2p_channel));
2954
2955 return 0;
2956
2957 fail:
2958 os_free(pref);
2959 wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
2960 return -1;
2961 }
2962 #endif /* CONFIG_P2P */
2963
2964
2965 static int wpa_config_process_hessid(
2966 const struct global_parse_data *data,
2967 struct wpa_config *config, int line, const char *pos)
2968 {
2969 if (hwaddr_aton2(pos, config->hessid) < 0) {
2970 wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
2971 line, pos);
2972 return -1;
2973 }
2974
2975 return 0;
2976 }
2977
2978
2979 #ifdef OFFSET
2980 #undef OFFSET
2981 #endif /* OFFSET */
2982 /* OFFSET: Get offset of a variable within the wpa_config structure */
2983 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
2984
2985 #define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL
2986 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL
2987 #define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f)
2988 #define INT(f) _INT(f), NULL, NULL
2989 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
2990 #define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f)
2991 #define STR(f) _STR(f), NULL, NULL
2992 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
2993 #define BIN(f) #f, wpa_global_config_parse_bin, OFFSET(f), NULL, NULL
2994
2995 static const struct global_parse_data global_fields[] = {
2996 #ifdef CONFIG_CTRL_IFACE
2997 { STR(ctrl_interface), 0 },
2998 { STR(ctrl_interface_group), 0 } /* deprecated */,
2999 #endif /* CONFIG_CTRL_IFACE */
3000 { INT_RANGE(eapol_version, 1, 2), 0 },
3001 { INT(ap_scan), 0 },
3002 { INT(disable_scan_offload), 0 },
3003 { INT(fast_reauth), 0 },
3004 { STR(opensc_engine_path), 0 },
3005 { STR(pkcs11_engine_path), 0 },
3006 { STR(pkcs11_module_path), 0 },
3007 { STR(pcsc_reader), 0 },
3008 { STR(pcsc_pin), 0 },
3009 { STR(driver_param), 0 },
3010 { INT(dot11RSNAConfigPMKLifetime), 0 },
3011 { INT(dot11RSNAConfigPMKReauthThreshold), 0 },
3012 { INT(dot11RSNAConfigSATimeout), 0 },
3013 #ifndef CONFIG_NO_CONFIG_WRITE
3014 { INT(update_config), 0 },
3015 #endif /* CONFIG_NO_CONFIG_WRITE */
3016 { FUNC_NO_VAR(load_dynamic_eap), 0 },
3017 #ifdef CONFIG_WPS
3018 { FUNC(uuid), CFG_CHANGED_UUID },
3019 { STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME },
3020 { STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
3021 { STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
3022 { STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
3023 { STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
3024 { FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
3025 { FUNC(os_version), CFG_CHANGED_OS_VERSION },
3026 { STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
3027 { INT_RANGE(wps_cred_processing, 0, 2), 0 },
3028 { FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
3029 #endif /* CONFIG_WPS */
3030 #ifdef CONFIG_P2P
3031 { FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
3032 { INT(p2p_listen_reg_class), 0 },
3033 { INT(p2p_listen_channel), 0 },
3034 { INT(p2p_oper_reg_class), 0 },
3035 { INT(p2p_oper_channel), 0 },
3036 { INT_RANGE(p2p_go_intent, 0, 15), 0 },
3037 { STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
3038 { INT_RANGE(persistent_reconnect, 0, 1), 0 },
3039 { INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
3040 { INT(p2p_group_idle), 0 },
3041 { FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
3042 { INT(p2p_go_ht40), 0 },
3043 { INT(p2p_disabled), 0 },
3044 { INT(p2p_no_group_iface), 0 },
3045 #endif /* CONFIG_P2P */
3046 { FUNC(country), CFG_CHANGED_COUNTRY },
3047 { INT(bss_max_count), 0 },
3048 { INT(bss_expiration_age), 0 },
3049 { INT(bss_expiration_scan_count), 0 },
3050 { INT_RANGE(filter_ssids, 0, 1), 0 },
3051 { INT_RANGE(filter_rssi, -100, 0), 0 },
3052 { INT(max_num_sta), 0 },
3053 { INT_RANGE(disassoc_low_ack, 0, 1), 0 },
3054 #ifdef CONFIG_HS20
3055 { INT_RANGE(hs20, 0, 1), 0 },
3056 #endif /* CONFIG_HS20 */
3057 { INT_RANGE(interworking, 0, 1), 0 },
3058 { FUNC(hessid), 0 },
3059 { INT_RANGE(access_network_type, 0, 15), 0 },
3060 { INT_RANGE(pbc_in_m1, 0, 1), 0 },
3061 { STR(autoscan), 0 },
3062 { INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff), 0 },
3063 { BIN(wps_nfc_dh_pubkey), 0 },
3064 { BIN(wps_nfc_dh_privkey), 0 },
3065 { BIN(wps_nfc_dev_pw), 0 },
3066 { STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
3067 { INT(p2p_go_max_inactivity), 0 },
3068 { INT_RANGE(auto_interworking, 0, 1), 0 },
3069 { INT(okc), 0 },
3070 { INT(pmf), 0 },
3071 };
3072
3073 #undef FUNC
3074 #undef _INT
3075 #undef INT
3076 #undef INT_RANGE
3077 #undef _STR
3078 #undef STR
3079 #undef STR_RANGE
3080 #undef BIN
3081 #define NUM_GLOBAL_FIELDS (sizeof(global_fields) / sizeof(global_fields[0]))
3082
3083
3084 int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
3085 {
3086 size_t i;
3087 int ret = 0;
3088
3089 for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
3090 const struct global_parse_data *field = &global_fields[i];
3091 size_t flen = os_strlen(field->name);
3092 if (os_strncmp(pos, field->name, flen) != 0 ||
3093 pos[flen] != '=')
3094 continue;
3095
3096 if (field->parser(field, config, line, pos + flen + 1)) {
3097 wpa_printf(MSG_ERROR, "Line %d: failed to "
3098 "parse '%s'.", line, pos);
3099 ret = -1;
3100 }
3101 config->changed_parameters |= field->changed_flag;
3102 break;
3103 }
3104 if (i == NUM_GLOBAL_FIELDS) {
3105 #ifdef CONFIG_AP
3106 if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
3107 char *tmp = os_strchr(pos, '=');
3108 if (tmp == NULL) {
3109 if (line < 0)
3110 return -1;
3111 wpa_printf(MSG_ERROR, "Line %d: invalid line "
3112 "'%s'", line, pos);
3113 return -1;
3114 }
3115 *tmp++ = '\0';
3116 if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
3117 tmp)) {
3118 wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
3119 "AC item", line);
3120 return -1;
3121 }
3122 }
3123 #endif /* CONFIG_AP */
3124 if (line < 0)
3125 return -1;
3126 wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
3127 line, pos);
3128 ret = -1;
3129 }
3130
3131 return ret;
3132 }
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