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