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1 /*
2  * WPA Supplicant / Configuration parser and common functions
3  * Copyright (c) 2003-2019, 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 "utils/ip_addr.h"
14 #include "common/ieee802_1x_defs.h"
15 #include "common/sae.h"
16 #include "crypto/sha1.h"
17 #include "rsn_supp/wpa.h"
18 #include "eap_peer/eap.h"
19 #include "p2p/p2p.h"
20 #include "fst/fst.h"
21 #include "config.h"
22 
23 
24 #if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
25 #define NO_CONFIG_WRITE
26 #endif
27 
28 /*
29  * Structure for network configuration parsing. This data is used to implement
30  * a generic parser for each network block variable. The table of configuration
31  * variables is defined below in this file (ssid_fields[]).
32  */
33 struct parse_data {
34 	/* Configuration variable name */
35 	char *name;
36 
37 	/* Parser function for this variable. The parser functions return 0 or 1
38 	 * to indicate success. Value 0 indicates that the parameter value may
39 	 * have changed while value 1 means that the value did not change.
40 	 * Error cases (failure to parse the string) are indicated by returning
41 	 * -1. */
42 	int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
43 		      int line, const char *value);
44 
45 #ifndef NO_CONFIG_WRITE
46 	/* Writer function (i.e., to get the variable in text format from
47 	 * internal presentation). */
48 	char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
49 #endif /* NO_CONFIG_WRITE */
50 
51 	/* Variable specific parameters for the parser. */
52 	void *param1, *param2, *param3, *param4;
53 
54 	/* 0 = this variable can be included in debug output and ctrl_iface
55 	 * 1 = this variable contains key/private data and it must not be
56 	 *     included in debug output unless explicitly requested. In
57 	 *     addition, this variable will not be readable through the
58 	 *     ctrl_iface.
59 	 */
60 	int key_data;
61 };
62 
63 
wpa_config_parse_str(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)64 static int wpa_config_parse_str(const struct parse_data *data,
65 				struct wpa_ssid *ssid,
66 				int line, const char *value)
67 {
68 	size_t res_len, *dst_len, prev_len;
69 	char **dst, *tmp;
70 
71 	if (os_strcmp(value, "NULL") == 0) {
72 		wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
73 			   data->name);
74 		tmp = NULL;
75 		res_len = 0;
76 		goto set;
77 	}
78 
79 	tmp = wpa_config_parse_string(value, &res_len);
80 	if (tmp == NULL) {
81 		wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
82 			   line, data->name,
83 			   data->key_data ? "[KEY DATA REMOVED]" : value);
84 		return -1;
85 	}
86 
87 	if (data->key_data) {
88 		wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
89 				      (u8 *) tmp, res_len);
90 	} else {
91 		wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
92 				  (u8 *) tmp, res_len);
93 	}
94 
95 	if (data->param3 && res_len < (size_t) data->param3) {
96 		wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
97 			   "min_len=%ld)", line, data->name,
98 			   (unsigned long) res_len, (long) data->param3);
99 		os_free(tmp);
100 		return -1;
101 	}
102 
103 	if (data->param4 && res_len > (size_t) data->param4) {
104 		wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
105 			   "max_len=%ld)", line, data->name,
106 			   (unsigned long) res_len, (long) data->param4);
107 		os_free(tmp);
108 		return -1;
109 	}
110 
111 set:
112 	dst = (char **) (((u8 *) ssid) + (long) data->param1);
113 	dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
114 
115 	if (data->param2)
116 		prev_len = *dst_len;
117 	else if (*dst)
118 		prev_len = os_strlen(*dst);
119 	else
120 		prev_len = 0;
121 	if ((*dst == NULL && tmp == NULL) ||
122 	    (*dst && tmp && prev_len == res_len &&
123 	     os_memcmp(*dst, tmp, res_len) == 0)) {
124 		/* No change to the previously configured value */
125 		os_free(tmp);
126 		return 1;
127 	}
128 
129 	os_free(*dst);
130 	*dst = tmp;
131 	if (data->param2)
132 		*dst_len = res_len;
133 
134 	return 0;
135 }
136 
137 
138 #ifndef NO_CONFIG_WRITE
wpa_config_write_string_ascii(const u8 * value,size_t len)139 static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
140 {
141 	char *buf;
142 
143 	buf = os_malloc(len + 3);
144 	if (buf == NULL)
145 		return NULL;
146 	buf[0] = '"';
147 	os_memcpy(buf + 1, value, len);
148 	buf[len + 1] = '"';
149 	buf[len + 2] = '\0';
150 
151 	return buf;
152 }
153 
154 
wpa_config_write_string_hex(const u8 * value,size_t len)155 static char * wpa_config_write_string_hex(const u8 *value, size_t len)
156 {
157 	char *buf;
158 
159 	buf = os_zalloc(2 * len + 1);
160 	if (buf == NULL)
161 		return NULL;
162 	wpa_snprintf_hex(buf, 2 * len + 1, value, len);
163 
164 	return buf;
165 }
166 
167 
wpa_config_write_string(const u8 * value,size_t len)168 static char * wpa_config_write_string(const u8 *value, size_t len)
169 {
170 	if (value == NULL)
171 		return NULL;
172 
173 	if (is_hex(value, len))
174 		return wpa_config_write_string_hex(value, len);
175 	else
176 		return wpa_config_write_string_ascii(value, len);
177 }
178 
179 
wpa_config_write_str(const struct parse_data * data,struct wpa_ssid * ssid)180 static char * wpa_config_write_str(const struct parse_data *data,
181 				   struct wpa_ssid *ssid)
182 {
183 	size_t len;
184 	char **src;
185 
186 	src = (char **) (((u8 *) ssid) + (long) data->param1);
187 	if (*src == NULL)
188 		return NULL;
189 
190 	if (data->param2)
191 		len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
192 	else
193 		len = os_strlen(*src);
194 
195 	return wpa_config_write_string((const u8 *) *src, len);
196 }
197 #endif /* NO_CONFIG_WRITE */
198 
199 
wpa_config_parse_int(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)200 static int wpa_config_parse_int(const struct parse_data *data,
201 				struct wpa_ssid *ssid,
202 				int line, const char *value)
203 {
204 	int val, *dst;
205 	char *end;
206 
207 	dst = (int *) (((u8 *) ssid) + (long) data->param1);
208 	val = strtol(value, &end, 0);
209 	if (*end) {
210 		wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
211 			   line, value);
212 		return -1;
213 	}
214 
215 	if (*dst == val)
216 		return 1;
217 	*dst = val;
218 	wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
219 
220 	if (data->param3 && *dst < (long) data->param3) {
221 		wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
222 			   "min_value=%ld)", line, data->name, *dst,
223 			   (long) data->param3);
224 		*dst = (long) data->param3;
225 		return -1;
226 	}
227 
228 	if (data->param4 && *dst > (long) data->param4) {
229 		wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
230 			   "max_value=%ld)", line, data->name, *dst,
231 			   (long) data->param4);
232 		*dst = (long) data->param4;
233 		return -1;
234 	}
235 
236 	return 0;
237 }
238 
239 
240 #ifndef NO_CONFIG_WRITE
wpa_config_write_int(const struct parse_data * data,struct wpa_ssid * ssid)241 static char * wpa_config_write_int(const struct parse_data *data,
242 				   struct wpa_ssid *ssid)
243 {
244 	int *src, res;
245 	char *value;
246 
247 	src = (int *) (((u8 *) ssid) + (long) data->param1);
248 
249 	value = os_malloc(20);
250 	if (value == NULL)
251 		return NULL;
252 	res = os_snprintf(value, 20, "%d", *src);
253 	if (os_snprintf_error(20, res)) {
254 		os_free(value);
255 		return NULL;
256 	}
257 	value[20 - 1] = '\0';
258 	return value;
259 }
260 #endif /* NO_CONFIG_WRITE */
261 
262 
wpa_config_parse_addr_list(const struct parse_data * data,int line,const char * value,u8 ** list,size_t * num,char * name,u8 abort_on_error,u8 masked)263 static int wpa_config_parse_addr_list(const struct parse_data *data,
264 				      int line, const char *value,
265 				      u8 **list, size_t *num, char *name,
266 				      u8 abort_on_error, u8 masked)
267 {
268 	const char *pos;
269 	u8 *buf, *n, addr[2 * ETH_ALEN];
270 	size_t count;
271 
272 	buf = NULL;
273 	count = 0;
274 
275 	pos = value;
276 	while (pos && *pos) {
277 		while (*pos == ' ')
278 			pos++;
279 
280 		if (hwaddr_masked_aton(pos, addr, &addr[ETH_ALEN], masked)) {
281 			if (abort_on_error || count == 0) {
282 				wpa_printf(MSG_ERROR,
283 					   "Line %d: Invalid %s address '%s'",
284 					   line, name, value);
285 				os_free(buf);
286 				return -1;
287 			}
288 			/* continue anyway since this could have been from a
289 			 * truncated configuration file line */
290 			wpa_printf(MSG_INFO,
291 				   "Line %d: Ignore likely truncated %s address '%s'",
292 				   line, name, pos);
293 		} else {
294 			n = os_realloc_array(buf, count + 1, 2 * ETH_ALEN);
295 			if (n == NULL) {
296 				os_free(buf);
297 				return -1;
298 			}
299 			buf = n;
300 			os_memmove(buf + 2 * ETH_ALEN, buf,
301 				   count * 2 * ETH_ALEN);
302 			os_memcpy(buf, addr, 2 * ETH_ALEN);
303 			count++;
304 			wpa_printf(MSG_MSGDUMP,
305 				   "%s: addr=" MACSTR " mask=" MACSTR,
306 				   name, MAC2STR(addr),
307 				   MAC2STR(&addr[ETH_ALEN]));
308 		}
309 
310 		pos = os_strchr(pos, ' ');
311 	}
312 
313 	os_free(*list);
314 	*list = buf;
315 	*num = count;
316 
317 	return 0;
318 }
319 
320 
321 #ifndef NO_CONFIG_WRITE
wpa_config_write_addr_list(const struct parse_data * data,const u8 * list,size_t num,char * name)322 static char * wpa_config_write_addr_list(const struct parse_data *data,
323 					 const u8 *list, size_t num, char *name)
324 {
325 	char *value, *end, *pos;
326 	int res;
327 	size_t i;
328 
329 	if (list == NULL || num == 0)
330 		return NULL;
331 
332 	value = os_malloc(2 * 20 * num);
333 	if (value == NULL)
334 		return NULL;
335 	pos = value;
336 	end = value + 2 * 20 * num;
337 
338 	for (i = num; i > 0; i--) {
339 		const u8 *a = list + (i - 1) * 2 * ETH_ALEN;
340 		const u8 *m = a + ETH_ALEN;
341 
342 		if (i < num)
343 			*pos++ = ' ';
344 		res = hwaddr_mask_txt(pos, end - pos, a, m);
345 		if (res < 0) {
346 			os_free(value);
347 			return NULL;
348 		}
349 		pos += res;
350 	}
351 
352 	return value;
353 }
354 #endif /* NO_CONFIG_WRITE */
355 
wpa_config_parse_bssid(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)356 static int wpa_config_parse_bssid(const struct parse_data *data,
357 				  struct wpa_ssid *ssid, int line,
358 				  const char *value)
359 {
360 	if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
361 	    os_strcmp(value, "any") == 0) {
362 		ssid->bssid_set = 0;
363 		wpa_printf(MSG_MSGDUMP, "BSSID any");
364 		return 0;
365 	}
366 	if (hwaddr_aton(value, ssid->bssid)) {
367 		wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
368 			   line, value);
369 		return -1;
370 	}
371 	ssid->bssid_set = 1;
372 	wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
373 	return 0;
374 }
375 
376 
377 #ifndef NO_CONFIG_WRITE
wpa_config_write_bssid(const struct parse_data * data,struct wpa_ssid * ssid)378 static char * wpa_config_write_bssid(const struct parse_data *data,
379 				     struct wpa_ssid *ssid)
380 {
381 	char *value;
382 	int res;
383 
384 	if (!ssid->bssid_set)
385 		return NULL;
386 
387 	value = os_malloc(20);
388 	if (value == NULL)
389 		return NULL;
390 	res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
391 	if (os_snprintf_error(20, res)) {
392 		os_free(value);
393 		return NULL;
394 	}
395 	value[20 - 1] = '\0';
396 	return value;
397 }
398 #endif /* NO_CONFIG_WRITE */
399 
400 
wpa_config_parse_bssid_hint(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)401 static int wpa_config_parse_bssid_hint(const struct parse_data *data,
402 				       struct wpa_ssid *ssid, int line,
403 				       const char *value)
404 {
405 	if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
406 	    os_strcmp(value, "any") == 0) {
407 		ssid->bssid_hint_set = 0;
408 		wpa_printf(MSG_MSGDUMP, "BSSID hint any");
409 		return 0;
410 	}
411 	if (hwaddr_aton(value, ssid->bssid_hint)) {
412 		wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID hint '%s'.",
413 			   line, value);
414 		return -1;
415 	}
416 	ssid->bssid_hint_set = 1;
417 	wpa_hexdump(MSG_MSGDUMP, "BSSID hint", ssid->bssid_hint, ETH_ALEN);
418 	return 0;
419 }
420 
421 
422 #ifndef NO_CONFIG_WRITE
wpa_config_write_bssid_hint(const struct parse_data * data,struct wpa_ssid * ssid)423 static char * wpa_config_write_bssid_hint(const struct parse_data *data,
424 					  struct wpa_ssid *ssid)
425 {
426 	char *value;
427 	int res;
428 
429 	if (!ssid->bssid_hint_set)
430 		return NULL;
431 
432 	value = os_malloc(20);
433 	if (!value)
434 		return NULL;
435 	res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid_hint));
436 	if (os_snprintf_error(20, res)) {
437 		os_free(value);
438 		return NULL;
439 	}
440 	return value;
441 }
442 #endif /* NO_CONFIG_WRITE */
443 
444 
wpa_config_parse_bssid_blacklist(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)445 static int wpa_config_parse_bssid_blacklist(const struct parse_data *data,
446 					    struct wpa_ssid *ssid, int line,
447 					    const char *value)
448 {
449 	return wpa_config_parse_addr_list(data, line, value,
450 					  &ssid->bssid_blacklist,
451 					  &ssid->num_bssid_blacklist,
452 					  "bssid_blacklist", 1, 1);
453 }
454 
455 
456 #ifndef NO_CONFIG_WRITE
wpa_config_write_bssid_blacklist(const struct parse_data * data,struct wpa_ssid * ssid)457 static char * wpa_config_write_bssid_blacklist(const struct parse_data *data,
458 					       struct wpa_ssid *ssid)
459 {
460 	return wpa_config_write_addr_list(data, ssid->bssid_blacklist,
461 					  ssid->num_bssid_blacklist,
462 					  "bssid_blacklist");
463 }
464 #endif /* NO_CONFIG_WRITE */
465 
466 
wpa_config_parse_bssid_whitelist(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)467 static int wpa_config_parse_bssid_whitelist(const struct parse_data *data,
468 					    struct wpa_ssid *ssid, int line,
469 					    const char *value)
470 {
471 	return wpa_config_parse_addr_list(data, line, value,
472 					  &ssid->bssid_whitelist,
473 					  &ssid->num_bssid_whitelist,
474 					  "bssid_whitelist", 1, 1);
475 }
476 
477 
478 #ifndef NO_CONFIG_WRITE
wpa_config_write_bssid_whitelist(const struct parse_data * data,struct wpa_ssid * ssid)479 static char * wpa_config_write_bssid_whitelist(const struct parse_data *data,
480 					       struct wpa_ssid *ssid)
481 {
482 	return wpa_config_write_addr_list(data, ssid->bssid_whitelist,
483 					  ssid->num_bssid_whitelist,
484 					  "bssid_whitelist");
485 }
486 #endif /* NO_CONFIG_WRITE */
487 
488 
wpa_config_parse_psk(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)489 static int wpa_config_parse_psk(const struct parse_data *data,
490 				struct wpa_ssid *ssid, int line,
491 				const char *value)
492 {
493 #ifdef CONFIG_EXT_PASSWORD
494 	if (os_strncmp(value, "ext:", 4) == 0) {
495 		str_clear_free(ssid->passphrase);
496 		ssid->passphrase = NULL;
497 		ssid->psk_set = 0;
498 		os_free(ssid->ext_psk);
499 		ssid->ext_psk = os_strdup(value + 4);
500 		if (ssid->ext_psk == NULL)
501 			return -1;
502 		wpa_printf(MSG_DEBUG, "PSK: External password '%s'",
503 			   ssid->ext_psk);
504 		return 0;
505 	}
506 #endif /* CONFIG_EXT_PASSWORD */
507 
508 	if (*value == '"') {
509 #ifndef CONFIG_NO_PBKDF2
510 		const char *pos;
511 		size_t len;
512 
513 		value++;
514 		pos = os_strrchr(value, '"');
515 		if (pos)
516 			len = pos - value;
517 		else
518 			len = os_strlen(value);
519 		if (len < 8 || len > 63) {
520 			wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
521 				   "length %lu (expected: 8..63) '%s'.",
522 				   line, (unsigned long) len, value);
523 			return -1;
524 		}
525 		wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
526 				      (u8 *) value, len);
527 		if (has_ctrl_char((u8 *) value, len)) {
528 			wpa_printf(MSG_ERROR,
529 				   "Line %d: Invalid passphrase character",
530 				   line);
531 			return -1;
532 		}
533 		if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
534 		    os_memcmp(ssid->passphrase, value, len) == 0) {
535 			/* No change to the previously configured value */
536 			return 1;
537 		}
538 		ssid->psk_set = 0;
539 		str_clear_free(ssid->passphrase);
540 		ssid->passphrase = dup_binstr(value, len);
541 		if (ssid->passphrase == NULL)
542 			return -1;
543 		return 0;
544 #else /* CONFIG_NO_PBKDF2 */
545 		wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
546 			   "supported.", line);
547 		return -1;
548 #endif /* CONFIG_NO_PBKDF2 */
549 	}
550 
551 	if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
552 	    value[PMK_LEN * 2] != '\0') {
553 		wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
554 			   line, value);
555 		return -1;
556 	}
557 
558 	str_clear_free(ssid->passphrase);
559 	ssid->passphrase = NULL;
560 
561 	ssid->psk_set = 1;
562 	wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
563 	return 0;
564 }
565 
566 
567 #ifndef NO_CONFIG_WRITE
wpa_config_write_psk(const struct parse_data * data,struct wpa_ssid * ssid)568 static char * wpa_config_write_psk(const struct parse_data *data,
569 				   struct wpa_ssid *ssid)
570 {
571 #ifdef CONFIG_EXT_PASSWORD
572 	if (ssid->ext_psk) {
573 		size_t len = 4 + os_strlen(ssid->ext_psk) + 1;
574 		char *buf = os_malloc(len);
575 		int res;
576 
577 		if (buf == NULL)
578 			return NULL;
579 		res = os_snprintf(buf, len, "ext:%s", ssid->ext_psk);
580 		if (os_snprintf_error(len, res)) {
581 			os_free(buf);
582 			buf = NULL;
583 		}
584 		return buf;
585 	}
586 #endif /* CONFIG_EXT_PASSWORD */
587 
588 	if (ssid->passphrase)
589 		return wpa_config_write_string_ascii(
590 			(const u8 *) ssid->passphrase,
591 			os_strlen(ssid->passphrase));
592 
593 	if (ssid->psk_set)
594 		return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
595 
596 	return NULL;
597 }
598 #endif /* NO_CONFIG_WRITE */
599 
600 
wpa_config_parse_proto(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)601 static int wpa_config_parse_proto(const struct parse_data *data,
602 				  struct wpa_ssid *ssid, int line,
603 				  const char *value)
604 {
605 	int val = 0, last, errors = 0;
606 	char *start, *end, *buf;
607 
608 	buf = os_strdup(value);
609 	if (buf == NULL)
610 		return -1;
611 	start = buf;
612 
613 	while (*start != '\0') {
614 		while (*start == ' ' || *start == '\t')
615 			start++;
616 		if (*start == '\0')
617 			break;
618 		end = start;
619 		while (*end != ' ' && *end != '\t' && *end != '\0')
620 			end++;
621 		last = *end == '\0';
622 		*end = '\0';
623 		if (os_strcmp(start, "WPA") == 0)
624 			val |= WPA_PROTO_WPA;
625 		else if (os_strcmp(start, "RSN") == 0 ||
626 			 os_strcmp(start, "WPA2") == 0)
627 			val |= WPA_PROTO_RSN;
628 		else if (os_strcmp(start, "OSEN") == 0)
629 			val |= WPA_PROTO_OSEN;
630 		else {
631 			wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
632 				   line, start);
633 			errors++;
634 		}
635 
636 		if (last)
637 			break;
638 		start = end + 1;
639 	}
640 	os_free(buf);
641 
642 	if (val == 0) {
643 		wpa_printf(MSG_ERROR,
644 			   "Line %d: no proto values configured.", line);
645 		errors++;
646 	}
647 
648 	if (!errors && ssid->proto == val)
649 		return 1;
650 	wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
651 	ssid->proto = val;
652 	return errors ? -1 : 0;
653 }
654 
655 
656 #ifndef NO_CONFIG_WRITE
wpa_config_write_proto(const struct parse_data * data,struct wpa_ssid * ssid)657 static char * wpa_config_write_proto(const struct parse_data *data,
658 				     struct wpa_ssid *ssid)
659 {
660 	int ret;
661 	char *buf, *pos, *end;
662 
663 	pos = buf = os_zalloc(20);
664 	if (buf == NULL)
665 		return NULL;
666 	end = buf + 20;
667 
668 	if (ssid->proto & WPA_PROTO_WPA) {
669 		ret = os_snprintf(pos, end - pos, "%sWPA",
670 				  pos == buf ? "" : " ");
671 		if (os_snprintf_error(end - pos, ret))
672 			return buf;
673 		pos += ret;
674 	}
675 
676 	if (ssid->proto & WPA_PROTO_RSN) {
677 		ret = os_snprintf(pos, end - pos, "%sRSN",
678 				  pos == buf ? "" : " ");
679 		if (os_snprintf_error(end - pos, ret))
680 			return buf;
681 		pos += ret;
682 	}
683 
684 	if (ssid->proto & WPA_PROTO_OSEN) {
685 		ret = os_snprintf(pos, end - pos, "%sOSEN",
686 				  pos == buf ? "" : " ");
687 		if (os_snprintf_error(end - pos, ret))
688 			return buf;
689 		pos += ret;
690 	}
691 
692 	if (pos == buf) {
693 		os_free(buf);
694 		buf = NULL;
695 	}
696 
697 	return buf;
698 }
699 #endif /* NO_CONFIG_WRITE */
700 
701 
wpa_config_parse_key_mgmt(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)702 static int wpa_config_parse_key_mgmt(const struct parse_data *data,
703 				     struct wpa_ssid *ssid, int line,
704 				     const char *value)
705 {
706 	int val = 0, last, errors = 0;
707 	char *start, *end, *buf;
708 
709 	buf = os_strdup(value);
710 	if (buf == NULL)
711 		return -1;
712 	start = buf;
713 
714 	while (*start != '\0') {
715 		while (*start == ' ' || *start == '\t')
716 			start++;
717 		if (*start == '\0')
718 			break;
719 		end = start;
720 		while (*end != ' ' && *end != '\t' && *end != '\0')
721 			end++;
722 		last = *end == '\0';
723 		*end = '\0';
724 		if (os_strcmp(start, "WPA-PSK") == 0)
725 			val |= WPA_KEY_MGMT_PSK;
726 		else if (os_strcmp(start, "WPA-EAP") == 0)
727 			val |= WPA_KEY_MGMT_IEEE8021X;
728 		else if (os_strcmp(start, "IEEE8021X") == 0)
729 			val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
730 		else if (os_strcmp(start, "NONE") == 0)
731 			val |= WPA_KEY_MGMT_NONE;
732 		else if (os_strcmp(start, "WPA-NONE") == 0)
733 			val |= WPA_KEY_MGMT_WPA_NONE;
734 #ifdef CONFIG_IEEE80211R
735 		else if (os_strcmp(start, "FT-PSK") == 0)
736 			val |= WPA_KEY_MGMT_FT_PSK;
737 		else if (os_strcmp(start, "FT-EAP") == 0)
738 			val |= WPA_KEY_MGMT_FT_IEEE8021X;
739 #ifdef CONFIG_SHA384
740 		else if (os_strcmp(start, "FT-EAP-SHA384") == 0)
741 			val |= WPA_KEY_MGMT_FT_IEEE8021X_SHA384;
742 #endif /* CONFIG_SHA384 */
743 #endif /* CONFIG_IEEE80211R */
744 		else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
745 			val |= WPA_KEY_MGMT_PSK_SHA256;
746 		else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
747 			val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
748 #ifdef CONFIG_WPS
749 		else if (os_strcmp(start, "WPS") == 0)
750 			val |= WPA_KEY_MGMT_WPS;
751 #endif /* CONFIG_WPS */
752 #ifdef CONFIG_SAE
753 		else if (os_strcmp(start, "SAE") == 0)
754 			val |= WPA_KEY_MGMT_SAE;
755 		else if (os_strcmp(start, "FT-SAE") == 0)
756 			val |= WPA_KEY_MGMT_FT_SAE;
757 #endif /* CONFIG_SAE */
758 #ifdef CONFIG_HS20
759 		else if (os_strcmp(start, "OSEN") == 0)
760 			val |= WPA_KEY_MGMT_OSEN;
761 #endif /* CONFIG_HS20 */
762 #ifdef CONFIG_SUITEB
763 		else if (os_strcmp(start, "WPA-EAP-SUITE-B") == 0)
764 			val |= WPA_KEY_MGMT_IEEE8021X_SUITE_B;
765 #endif /* CONFIG_SUITEB */
766 #ifdef CONFIG_SUITEB192
767 		else if (os_strcmp(start, "WPA-EAP-SUITE-B-192") == 0)
768 			val |= WPA_KEY_MGMT_IEEE8021X_SUITE_B_192;
769 #endif /* CONFIG_SUITEB192 */
770 #ifdef CONFIG_FILS
771 		else if (os_strcmp(start, "FILS-SHA256") == 0)
772 			val |= WPA_KEY_MGMT_FILS_SHA256;
773 		else if (os_strcmp(start, "FILS-SHA384") == 0)
774 			val |= WPA_KEY_MGMT_FILS_SHA384;
775 #ifdef CONFIG_IEEE80211R
776 		else if (os_strcmp(start, "FT-FILS-SHA256") == 0)
777 			val |= WPA_KEY_MGMT_FT_FILS_SHA256;
778 		else if (os_strcmp(start, "FT-FILS-SHA384") == 0)
779 			val |= WPA_KEY_MGMT_FT_FILS_SHA384;
780 #endif /* CONFIG_IEEE80211R */
781 #endif /* CONFIG_FILS */
782 #ifdef CONFIG_OWE
783 		else if (os_strcmp(start, "OWE") == 0)
784 			val |= WPA_KEY_MGMT_OWE;
785 #endif /* CONFIG_OWE */
786 #ifdef CONFIG_DPP
787 		else if (os_strcmp(start, "DPP") == 0)
788 			val |= WPA_KEY_MGMT_DPP;
789 #endif /* CONFIG_DPP */
790 		else {
791 			wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
792 				   line, start);
793 			errors++;
794 		}
795 
796 		if (last)
797 			break;
798 		start = end + 1;
799 	}
800 	os_free(buf);
801 
802 	if (val == 0) {
803 		wpa_printf(MSG_ERROR,
804 			   "Line %d: no key_mgmt values configured.", line);
805 		errors++;
806 	}
807 
808 	if (!errors && ssid->key_mgmt == val)
809 		return 1;
810 	wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
811 	ssid->key_mgmt = val;
812 	return errors ? -1 : 0;
813 }
814 
815 
816 #ifndef NO_CONFIG_WRITE
wpa_config_write_key_mgmt(const struct parse_data * data,struct wpa_ssid * ssid)817 static char * wpa_config_write_key_mgmt(const struct parse_data *data,
818 					struct wpa_ssid *ssid)
819 {
820 	char *buf, *pos, *end;
821 	int ret;
822 
823 	pos = buf = os_zalloc(100);
824 	if (buf == NULL)
825 		return NULL;
826 	end = buf + 100;
827 
828 	if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
829 		ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
830 				  pos == buf ? "" : " ");
831 		if (os_snprintf_error(end - pos, ret)) {
832 			end[-1] = '\0';
833 			return buf;
834 		}
835 		pos += ret;
836 	}
837 
838 	if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
839 		ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
840 				  pos == buf ? "" : " ");
841 		if (os_snprintf_error(end - pos, ret)) {
842 			end[-1] = '\0';
843 			return buf;
844 		}
845 		pos += ret;
846 	}
847 
848 	if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
849 		ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
850 				  pos == buf ? "" : " ");
851 		if (os_snprintf_error(end - pos, ret)) {
852 			end[-1] = '\0';
853 			return buf;
854 		}
855 		pos += ret;
856 	}
857 
858 	if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
859 		ret = os_snprintf(pos, end - pos, "%sNONE",
860 				  pos == buf ? "" : " ");
861 		if (os_snprintf_error(end - pos, ret)) {
862 			end[-1] = '\0';
863 			return buf;
864 		}
865 		pos += ret;
866 	}
867 
868 	if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
869 		ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
870 				  pos == buf ? "" : " ");
871 		if (os_snprintf_error(end - pos, ret)) {
872 			end[-1] = '\0';
873 			return buf;
874 		}
875 		pos += ret;
876 	}
877 
878 #ifdef CONFIG_IEEE80211R
879 	if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) {
880 		ret = os_snprintf(pos, end - pos, "%sFT-PSK",
881 				  pos == buf ? "" : " ");
882 		if (os_snprintf_error(end - pos, ret)) {
883 			end[-1] = '\0';
884 			return buf;
885 		}
886 		pos += ret;
887 	}
888 
889 	if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
890 		ret = os_snprintf(pos, end - pos, "%sFT-EAP",
891 				  pos == buf ? "" : " ");
892 		if (os_snprintf_error(end - pos, ret)) {
893 			end[-1] = '\0';
894 			return buf;
895 		}
896 		pos += ret;
897 	}
898 
899 #ifdef CONFIG_SHA384
900 	if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X_SHA384) {
901 		ret = os_snprintf(pos, end - pos, "%sFT-EAP-SHA384",
902 				  pos == buf ? "" : " ");
903 		if (os_snprintf_error(end - pos, ret)) {
904 			end[-1] = '\0';
905 			return buf;
906 		}
907 		pos += ret;
908 	}
909 #endif /* CONFIG_SHA384 */
910 #endif /* CONFIG_IEEE80211R */
911 
912 	if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
913 		ret = os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
914 				  pos == buf ? "" : " ");
915 		if (os_snprintf_error(end - pos, ret)) {
916 			end[-1] = '\0';
917 			return buf;
918 		}
919 		pos += ret;
920 	}
921 
922 	if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
923 		ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
924 				  pos == buf ? "" : " ");
925 		if (os_snprintf_error(end - pos, ret)) {
926 			end[-1] = '\0';
927 			return buf;
928 		}
929 		pos += ret;
930 	}
931 
932 #ifdef CONFIG_WPS
933 	if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
934 		ret = os_snprintf(pos, end - pos, "%sWPS",
935 				  pos == buf ? "" : " ");
936 		if (os_snprintf_error(end - pos, ret)) {
937 			end[-1] = '\0';
938 			return buf;
939 		}
940 		pos += ret;
941 	}
942 #endif /* CONFIG_WPS */
943 
944 #ifdef CONFIG_SAE
945 	if (ssid->key_mgmt & WPA_KEY_MGMT_SAE) {
946 		ret = os_snprintf(pos, end - pos, "%sSAE",
947 				  pos == buf ? "" : " ");
948 		if (os_snprintf_error(end - pos, ret)) {
949 			end[-1] = '\0';
950 			return buf;
951 		}
952 		pos += ret;
953 	}
954 
955 	if (ssid->key_mgmt & WPA_KEY_MGMT_FT_SAE) {
956 		ret = os_snprintf(pos, end - pos, "%sFT-SAE",
957 				  pos == buf ? "" : " ");
958 		if (os_snprintf_error(end - pos, ret)) {
959 			end[-1] = '\0';
960 			return buf;
961 		}
962 		pos += ret;
963 	}
964 #endif /* CONFIG_SAE */
965 
966 #ifdef CONFIG_HS20
967 	if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN) {
968 		ret = os_snprintf(pos, end - pos, "%sOSEN",
969 				  pos == buf ? "" : " ");
970 		if (os_snprintf_error(end - pos, ret)) {
971 			end[-1] = '\0';
972 			return buf;
973 		}
974 		pos += ret;
975 	}
976 #endif /* CONFIG_HS20 */
977 
978 #ifdef CONFIG_SUITEB
979 	if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
980 		ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SUITE-B",
981 				  pos == buf ? "" : " ");
982 		if (os_snprintf_error(end - pos, ret)) {
983 			end[-1] = '\0';
984 			return buf;
985 		}
986 		pos += ret;
987 	}
988 #endif /* CONFIG_SUITEB */
989 
990 #ifdef CONFIG_SUITEB192
991 	if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
992 		ret = os_snprintf(pos, end - pos, "%sWPA-EAP-SUITE-B-192",
993 				  pos == buf ? "" : " ");
994 		if (os_snprintf_error(end - pos, ret)) {
995 			end[-1] = '\0';
996 			return buf;
997 		}
998 		pos += ret;
999 	}
1000 #endif /* CONFIG_SUITEB192 */
1001 
1002 #ifdef CONFIG_FILS
1003 	if (ssid->key_mgmt & WPA_KEY_MGMT_FILS_SHA256) {
1004 		ret = os_snprintf(pos, end - pos, "%sFILS-SHA256",
1005 				  pos == buf ? "" : " ");
1006 		if (os_snprintf_error(end - pos, ret)) {
1007 			end[-1] = '\0';
1008 			return buf;
1009 		}
1010 		pos += ret;
1011 	}
1012 	if (ssid->key_mgmt & WPA_KEY_MGMT_FILS_SHA384) {
1013 		ret = os_snprintf(pos, end - pos, "%sFILS-SHA384",
1014 				  pos == buf ? "" : " ");
1015 		if (os_snprintf_error(end - pos, ret)) {
1016 			end[-1] = '\0';
1017 			return buf;
1018 		}
1019 		pos += ret;
1020 	}
1021 #ifdef CONFIG_IEEE80211R
1022 	if (ssid->key_mgmt & WPA_KEY_MGMT_FT_FILS_SHA256) {
1023 		ret = os_snprintf(pos, end - pos, "%sFT-FILS-SHA256",
1024 				  pos == buf ? "" : " ");
1025 		if (os_snprintf_error(end - pos, ret)) {
1026 			end[-1] = '\0';
1027 			return buf;
1028 		}
1029 		pos += ret;
1030 	}
1031 	if (ssid->key_mgmt & WPA_KEY_MGMT_FT_FILS_SHA384) {
1032 		ret = os_snprintf(pos, end - pos, "%sFT-FILS-SHA384",
1033 				  pos == buf ? "" : " ");
1034 		if (os_snprintf_error(end - pos, ret)) {
1035 			end[-1] = '\0';
1036 			return buf;
1037 		}
1038 		pos += ret;
1039 	}
1040 #endif /* CONFIG_IEEE80211R */
1041 #endif /* CONFIG_FILS */
1042 
1043 #ifdef CONFIG_DPP
1044 	if (ssid->key_mgmt & WPA_KEY_MGMT_DPP) {
1045 		ret = os_snprintf(pos, end - pos, "%sDPP",
1046 				  pos == buf ? "" : " ");
1047 		if (os_snprintf_error(end - pos, ret)) {
1048 			end[-1] = '\0';
1049 			return buf;
1050 		}
1051 		pos += ret;
1052 	}
1053 #endif /* CONFIG_DPP */
1054 
1055 #ifdef CONFIG_OWE
1056 	if (ssid->key_mgmt & WPA_KEY_MGMT_OWE) {
1057 		ret = os_snprintf(pos, end - pos, "%sOWE",
1058 				  pos == buf ? "" : " ");
1059 		if (os_snprintf_error(end - pos, ret)) {
1060 			end[-1] = '\0';
1061 			return buf;
1062 		}
1063 		pos += ret;
1064 	}
1065 #endif /* CONFIG_OWE */
1066 
1067 	if (pos == buf) {
1068 		os_free(buf);
1069 		buf = NULL;
1070 	}
1071 
1072 	return buf;
1073 }
1074 #endif /* NO_CONFIG_WRITE */
1075 
1076 
wpa_config_parse_cipher(int line,const char * value)1077 static int wpa_config_parse_cipher(int line, const char *value)
1078 {
1079 #ifdef CONFIG_NO_WPA
1080 	return -1;
1081 #else /* CONFIG_NO_WPA */
1082 	int val = wpa_parse_cipher(value);
1083 	if (val < 0) {
1084 		wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
1085 			   line, value);
1086 		return -1;
1087 	}
1088 	if (val == 0) {
1089 		wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
1090 			   line);
1091 		return -1;
1092 	}
1093 	return val;
1094 #endif /* CONFIG_NO_WPA */
1095 }
1096 
1097 
1098 #ifndef NO_CONFIG_WRITE
wpa_config_write_cipher(int cipher)1099 static char * wpa_config_write_cipher(int cipher)
1100 {
1101 #ifdef CONFIG_NO_WPA
1102 	return NULL;
1103 #else /* CONFIG_NO_WPA */
1104 	char *buf = os_zalloc(50);
1105 	if (buf == NULL)
1106 		return NULL;
1107 
1108 	if (wpa_write_ciphers(buf, buf + 50, cipher, " ") < 0) {
1109 		os_free(buf);
1110 		return NULL;
1111 	}
1112 
1113 	return buf;
1114 #endif /* CONFIG_NO_WPA */
1115 }
1116 #endif /* NO_CONFIG_WRITE */
1117 
1118 
wpa_config_parse_pairwise(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1119 static int wpa_config_parse_pairwise(const struct parse_data *data,
1120 				     struct wpa_ssid *ssid, int line,
1121 				     const char *value)
1122 {
1123 	int val;
1124 	val = wpa_config_parse_cipher(line, value);
1125 	if (val == -1)
1126 		return -1;
1127 	if (val & ~WPA_ALLOWED_PAIRWISE_CIPHERS) {
1128 		wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
1129 			   "(0x%x).", line, val);
1130 		return -1;
1131 	}
1132 
1133 	if (ssid->pairwise_cipher == val)
1134 		return 1;
1135 	wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
1136 	ssid->pairwise_cipher = val;
1137 	return 0;
1138 }
1139 
1140 
1141 #ifndef NO_CONFIG_WRITE
wpa_config_write_pairwise(const struct parse_data * data,struct wpa_ssid * ssid)1142 static char * wpa_config_write_pairwise(const struct parse_data *data,
1143 					struct wpa_ssid *ssid)
1144 {
1145 	return wpa_config_write_cipher(ssid->pairwise_cipher);
1146 }
1147 #endif /* NO_CONFIG_WRITE */
1148 
1149 
wpa_config_parse_group(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1150 static int wpa_config_parse_group(const struct parse_data *data,
1151 				  struct wpa_ssid *ssid, int line,
1152 				  const char *value)
1153 {
1154 	int val;
1155 	val = wpa_config_parse_cipher(line, value);
1156 	if (val == -1)
1157 		return -1;
1158 
1159 	/*
1160 	 * Backwards compatibility - filter out WEP ciphers that were previously
1161 	 * allowed.
1162 	 */
1163 	val &= ~(WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40);
1164 
1165 	if (val & ~WPA_ALLOWED_GROUP_CIPHERS) {
1166 		wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
1167 			   "(0x%x).", line, val);
1168 		return -1;
1169 	}
1170 
1171 	if (ssid->group_cipher == val)
1172 		return 1;
1173 	wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
1174 	ssid->group_cipher = val;
1175 	return 0;
1176 }
1177 
1178 
1179 #ifndef NO_CONFIG_WRITE
wpa_config_write_group(const struct parse_data * data,struct wpa_ssid * ssid)1180 static char * wpa_config_write_group(const struct parse_data *data,
1181 				     struct wpa_ssid *ssid)
1182 {
1183 	return wpa_config_write_cipher(ssid->group_cipher);
1184 }
1185 #endif /* NO_CONFIG_WRITE */
1186 
1187 
wpa_config_parse_group_mgmt(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1188 static int wpa_config_parse_group_mgmt(const struct parse_data *data,
1189 				       struct wpa_ssid *ssid, int line,
1190 				       const char *value)
1191 {
1192 	int val;
1193 
1194 	val = wpa_config_parse_cipher(line, value);
1195 	if (val == -1)
1196 		return -1;
1197 
1198 	if (val & ~WPA_ALLOWED_GROUP_MGMT_CIPHERS) {
1199 		wpa_printf(MSG_ERROR,
1200 			   "Line %d: not allowed group management cipher (0x%x).",
1201 			   line, val);
1202 		return -1;
1203 	}
1204 
1205 	if (ssid->group_mgmt_cipher == val)
1206 		return 1;
1207 	wpa_printf(MSG_MSGDUMP, "group_mgmt: 0x%x", val);
1208 	ssid->group_mgmt_cipher = val;
1209 	return 0;
1210 }
1211 
1212 
1213 #ifndef NO_CONFIG_WRITE
wpa_config_write_group_mgmt(const struct parse_data * data,struct wpa_ssid * ssid)1214 static char * wpa_config_write_group_mgmt(const struct parse_data *data,
1215 					  struct wpa_ssid *ssid)
1216 {
1217 	return wpa_config_write_cipher(ssid->group_mgmt_cipher);
1218 }
1219 #endif /* NO_CONFIG_WRITE */
1220 
1221 
wpa_config_parse_auth_alg(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1222 static int wpa_config_parse_auth_alg(const struct parse_data *data,
1223 				     struct wpa_ssid *ssid, int line,
1224 				     const char *value)
1225 {
1226 	int val = 0, last, errors = 0;
1227 	char *start, *end, *buf;
1228 
1229 	buf = os_strdup(value);
1230 	if (buf == NULL)
1231 		return -1;
1232 	start = buf;
1233 
1234 	while (*start != '\0') {
1235 		while (*start == ' ' || *start == '\t')
1236 			start++;
1237 		if (*start == '\0')
1238 			break;
1239 		end = start;
1240 		while (*end != ' ' && *end != '\t' && *end != '\0')
1241 			end++;
1242 		last = *end == '\0';
1243 		*end = '\0';
1244 		if (os_strcmp(start, "OPEN") == 0)
1245 			val |= WPA_AUTH_ALG_OPEN;
1246 		else if (os_strcmp(start, "SHARED") == 0)
1247 			val |= WPA_AUTH_ALG_SHARED;
1248 		else if (os_strcmp(start, "LEAP") == 0)
1249 			val |= WPA_AUTH_ALG_LEAP;
1250 		else {
1251 			wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
1252 				   line, start);
1253 			errors++;
1254 		}
1255 
1256 		if (last)
1257 			break;
1258 		start = end + 1;
1259 	}
1260 	os_free(buf);
1261 
1262 	if (val == 0) {
1263 		wpa_printf(MSG_ERROR,
1264 			   "Line %d: no auth_alg values configured.", line);
1265 		errors++;
1266 	}
1267 
1268 	if (!errors && ssid->auth_alg == val)
1269 		return 1;
1270 	wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
1271 	ssid->auth_alg = val;
1272 	return errors ? -1 : 0;
1273 }
1274 
1275 
1276 #ifndef NO_CONFIG_WRITE
wpa_config_write_auth_alg(const struct parse_data * data,struct wpa_ssid * ssid)1277 static char * wpa_config_write_auth_alg(const struct parse_data *data,
1278 					struct wpa_ssid *ssid)
1279 {
1280 	char *buf, *pos, *end;
1281 	int ret;
1282 
1283 	pos = buf = os_zalloc(30);
1284 	if (buf == NULL)
1285 		return NULL;
1286 	end = buf + 30;
1287 
1288 	if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
1289 		ret = os_snprintf(pos, end - pos, "%sOPEN",
1290 				  pos == buf ? "" : " ");
1291 		if (os_snprintf_error(end - pos, ret)) {
1292 			end[-1] = '\0';
1293 			return buf;
1294 		}
1295 		pos += ret;
1296 	}
1297 
1298 	if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
1299 		ret = os_snprintf(pos, end - pos, "%sSHARED",
1300 				  pos == buf ? "" : " ");
1301 		if (os_snprintf_error(end - pos, ret)) {
1302 			end[-1] = '\0';
1303 			return buf;
1304 		}
1305 		pos += ret;
1306 	}
1307 
1308 	if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
1309 		ret = os_snprintf(pos, end - pos, "%sLEAP",
1310 				  pos == buf ? "" : " ");
1311 		if (os_snprintf_error(end - pos, ret)) {
1312 			end[-1] = '\0';
1313 			return buf;
1314 		}
1315 		pos += ret;
1316 	}
1317 
1318 	if (pos == buf) {
1319 		os_free(buf);
1320 		buf = NULL;
1321 	}
1322 
1323 	return buf;
1324 }
1325 #endif /* NO_CONFIG_WRITE */
1326 
1327 
wpa_config_parse_int_array(const char * value)1328 static int * wpa_config_parse_int_array(const char *value)
1329 {
1330 	int *freqs;
1331 	size_t used, len;
1332 	const char *pos;
1333 
1334 	used = 0;
1335 	len = 10;
1336 	freqs = os_calloc(len + 1, sizeof(int));
1337 	if (freqs == NULL)
1338 		return NULL;
1339 
1340 	pos = value;
1341 	while (pos) {
1342 		while (*pos == ' ')
1343 			pos++;
1344 		if (used == len) {
1345 			int *n;
1346 			size_t i;
1347 			n = os_realloc_array(freqs, len * 2 + 1, sizeof(int));
1348 			if (n == NULL) {
1349 				os_free(freqs);
1350 				return NULL;
1351 			}
1352 			for (i = len; i <= len * 2; i++)
1353 				n[i] = 0;
1354 			freqs = n;
1355 			len *= 2;
1356 		}
1357 
1358 		freqs[used] = atoi(pos);
1359 		if (freqs[used] == 0)
1360 			break;
1361 		used++;
1362 		pos = os_strchr(pos + 1, ' ');
1363 	}
1364 
1365 	return freqs;
1366 }
1367 
1368 
wpa_config_parse_scan_freq(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1369 static int wpa_config_parse_scan_freq(const struct parse_data *data,
1370 				      struct wpa_ssid *ssid, int line,
1371 				      const char *value)
1372 {
1373 	int *freqs;
1374 
1375 	freqs = wpa_config_parse_int_array(value);
1376 	if (freqs == NULL)
1377 		return -1;
1378 	if (freqs[0] == 0) {
1379 		os_free(freqs);
1380 		freqs = NULL;
1381 	}
1382 	os_free(ssid->scan_freq);
1383 	ssid->scan_freq = freqs;
1384 
1385 	return 0;
1386 }
1387 
1388 
wpa_config_parse_freq_list(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1389 static int wpa_config_parse_freq_list(const struct parse_data *data,
1390 				      struct wpa_ssid *ssid, int line,
1391 				      const char *value)
1392 {
1393 	int *freqs;
1394 
1395 	freqs = wpa_config_parse_int_array(value);
1396 	if (freqs == NULL)
1397 		return -1;
1398 	if (freqs[0] == 0) {
1399 		os_free(freqs);
1400 		freqs = NULL;
1401 	}
1402 	os_free(ssid->freq_list);
1403 	ssid->freq_list = freqs;
1404 
1405 	return 0;
1406 }
1407 
1408 
1409 #ifndef NO_CONFIG_WRITE
wpa_config_write_freqs(const struct parse_data * data,const int * freqs)1410 static char * wpa_config_write_freqs(const struct parse_data *data,
1411 				     const int *freqs)
1412 {
1413 	char *buf, *pos, *end;
1414 	int i, ret;
1415 	size_t count;
1416 
1417 	if (freqs == NULL)
1418 		return NULL;
1419 
1420 	count = 0;
1421 	for (i = 0; freqs[i]; i++)
1422 		count++;
1423 
1424 	pos = buf = os_zalloc(10 * count + 1);
1425 	if (buf == NULL)
1426 		return NULL;
1427 	end = buf + 10 * count + 1;
1428 
1429 	for (i = 0; freqs[i]; i++) {
1430 		ret = os_snprintf(pos, end - pos, "%s%u",
1431 				  i == 0 ? "" : " ", freqs[i]);
1432 		if (os_snprintf_error(end - pos, ret)) {
1433 			end[-1] = '\0';
1434 			return buf;
1435 		}
1436 		pos += ret;
1437 	}
1438 
1439 	return buf;
1440 }
1441 
1442 
wpa_config_write_scan_freq(const struct parse_data * data,struct wpa_ssid * ssid)1443 static char * wpa_config_write_scan_freq(const struct parse_data *data,
1444 					 struct wpa_ssid *ssid)
1445 {
1446 	return wpa_config_write_freqs(data, ssid->scan_freq);
1447 }
1448 
1449 
wpa_config_write_freq_list(const struct parse_data * data,struct wpa_ssid * ssid)1450 static char * wpa_config_write_freq_list(const struct parse_data *data,
1451 					 struct wpa_ssid *ssid)
1452 {
1453 	return wpa_config_write_freqs(data, ssid->freq_list);
1454 }
1455 #endif /* NO_CONFIG_WRITE */
1456 
1457 
1458 #ifdef IEEE8021X_EAPOL
wpa_config_parse_eap(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1459 static int wpa_config_parse_eap(const struct parse_data *data,
1460 				struct wpa_ssid *ssid, int line,
1461 				const char *value)
1462 {
1463 	int last, errors = 0;
1464 	char *start, *end, *buf;
1465 	struct eap_method_type *methods = NULL, *tmp;
1466 	size_t num_methods = 0;
1467 
1468 	buf = os_strdup(value);
1469 	if (buf == NULL)
1470 		return -1;
1471 	start = buf;
1472 
1473 	while (*start != '\0') {
1474 		while (*start == ' ' || *start == '\t')
1475 			start++;
1476 		if (*start == '\0')
1477 			break;
1478 		end = start;
1479 		while (*end != ' ' && *end != '\t' && *end != '\0')
1480 			end++;
1481 		last = *end == '\0';
1482 		*end = '\0';
1483 		tmp = methods;
1484 		methods = os_realloc_array(methods, num_methods + 1,
1485 					   sizeof(*methods));
1486 		if (methods == NULL) {
1487 			os_free(tmp);
1488 			os_free(buf);
1489 			return -1;
1490 		}
1491 		methods[num_methods].method = eap_peer_get_type(
1492 			start, &methods[num_methods].vendor);
1493 		if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1494 		    methods[num_methods].method == EAP_TYPE_NONE) {
1495 			wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
1496 				   "'%s'", line, start);
1497 			wpa_printf(MSG_ERROR, "You may need to add support for"
1498 				   " this EAP method during wpa_supplicant\n"
1499 				   "build time configuration.\n"
1500 				   "See README for more information.");
1501 			errors++;
1502 		} else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
1503 			   methods[num_methods].method == EAP_TYPE_LEAP)
1504 			ssid->leap++;
1505 		else
1506 			ssid->non_leap++;
1507 		num_methods++;
1508 		if (last)
1509 			break;
1510 		start = end + 1;
1511 	}
1512 	os_free(buf);
1513 
1514 	tmp = methods;
1515 	methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods));
1516 	if (methods == NULL) {
1517 		os_free(tmp);
1518 		return -1;
1519 	}
1520 	methods[num_methods].vendor = EAP_VENDOR_IETF;
1521 	methods[num_methods].method = EAP_TYPE_NONE;
1522 	num_methods++;
1523 
1524 	if (!errors && ssid->eap.eap_methods) {
1525 		struct eap_method_type *prev_m;
1526 		size_t i, j, prev_methods, match = 0;
1527 
1528 		prev_m = ssid->eap.eap_methods;
1529 		for (i = 0; prev_m[i].vendor != EAP_VENDOR_IETF ||
1530 			     prev_m[i].method != EAP_TYPE_NONE; i++) {
1531 			/* Count the methods */
1532 		}
1533 		prev_methods = i + 1;
1534 
1535 		for (i = 0; prev_methods == num_methods && i < prev_methods;
1536 		     i++) {
1537 			for (j = 0; j < num_methods; j++) {
1538 				if (prev_m[i].vendor == methods[j].vendor &&
1539 				    prev_m[i].method == methods[j].method) {
1540 					match++;
1541 					break;
1542 				}
1543 			}
1544 		}
1545 		if (match == num_methods) {
1546 			os_free(methods);
1547 			return 1;
1548 		}
1549 	}
1550 	wpa_hexdump(MSG_MSGDUMP, "eap methods",
1551 		    (u8 *) methods, num_methods * sizeof(*methods));
1552 	os_free(ssid->eap.eap_methods);
1553 	ssid->eap.eap_methods = methods;
1554 	return errors ? -1 : 0;
1555 }
1556 
1557 
1558 #ifndef NO_CONFIG_WRITE
wpa_config_write_eap(const struct parse_data * data,struct wpa_ssid * ssid)1559 static char * wpa_config_write_eap(const struct parse_data *data,
1560 				   struct wpa_ssid *ssid)
1561 {
1562 	int i, ret;
1563 	char *buf, *pos, *end;
1564 	const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
1565 	const char *name;
1566 
1567 	if (eap_methods == NULL)
1568 		return NULL;
1569 
1570 	pos = buf = os_zalloc(100);
1571 	if (buf == NULL)
1572 		return NULL;
1573 	end = buf + 100;
1574 
1575 	for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
1576 		     eap_methods[i].method != EAP_TYPE_NONE; i++) {
1577 		name = eap_get_name(eap_methods[i].vendor,
1578 				    eap_methods[i].method);
1579 		if (name) {
1580 			ret = os_snprintf(pos, end - pos, "%s%s",
1581 					  pos == buf ? "" : " ", name);
1582 			if (os_snprintf_error(end - pos, ret))
1583 				break;
1584 			pos += ret;
1585 		}
1586 	}
1587 
1588 	end[-1] = '\0';
1589 
1590 	return buf;
1591 }
1592 #endif /* NO_CONFIG_WRITE */
1593 
1594 
wpa_config_parse_password(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1595 static int wpa_config_parse_password(const struct parse_data *data,
1596 				     struct wpa_ssid *ssid, int line,
1597 				     const char *value)
1598 {
1599 	u8 *hash;
1600 
1601 	if (os_strcmp(value, "NULL") == 0) {
1602 		if (!ssid->eap.password)
1603 			return 1; /* Already unset */
1604 		wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
1605 		bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1606 		ssid->eap.password = NULL;
1607 		ssid->eap.password_len = 0;
1608 		return 0;
1609 	}
1610 
1611 #ifdef CONFIG_EXT_PASSWORD
1612 	if (os_strncmp(value, "ext:", 4) == 0) {
1613 		char *name = os_strdup(value + 4);
1614 		if (!name)
1615 			return -1;
1616 		bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1617 		ssid->eap.password = (u8 *) name;
1618 		ssid->eap.password_len = os_strlen(name);
1619 		ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1620 		ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD;
1621 		return 0;
1622 	}
1623 #endif /* CONFIG_EXT_PASSWORD */
1624 
1625 	if (os_strncmp(value, "hash:", 5) != 0) {
1626 		char *tmp;
1627 		size_t res_len;
1628 
1629 		tmp = wpa_config_parse_string(value, &res_len);
1630 		if (!tmp) {
1631 			wpa_printf(MSG_ERROR,
1632 				   "Line %d: failed to parse password.", line);
1633 			return -1;
1634 		}
1635 		wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
1636 				      (u8 *) tmp, res_len);
1637 
1638 		bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1639 		ssid->eap.password = (u8 *) tmp;
1640 		ssid->eap.password_len = res_len;
1641 		ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1642 		ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1643 
1644 		return 0;
1645 	}
1646 
1647 
1648 	/* NtPasswordHash: hash:<32 hex digits> */
1649 	if (os_strlen(value + 5) != 2 * 16) {
1650 		wpa_printf(MSG_ERROR,
1651 			   "Line %d: Invalid password hash length (expected 32 hex digits)",
1652 			   line);
1653 		return -1;
1654 	}
1655 
1656 	hash = os_malloc(16);
1657 	if (!hash)
1658 		return -1;
1659 
1660 	if (hexstr2bin(value + 5, hash, 16)) {
1661 		os_free(hash);
1662 		wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
1663 		return -1;
1664 	}
1665 
1666 	wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
1667 
1668 	if (ssid->eap.password && ssid->eap.password_len == 16 &&
1669 	    os_memcmp(ssid->eap.password, hash, 16) == 0 &&
1670 	    (ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
1671 		bin_clear_free(hash, 16);
1672 		return 1;
1673 	}
1674 	bin_clear_free(ssid->eap.password, ssid->eap.password_len);
1675 	ssid->eap.password = hash;
1676 	ssid->eap.password_len = 16;
1677 	ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
1678 	ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
1679 
1680 	return 0;
1681 }
1682 
1683 
wpa_config_parse_machine_password(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1684 static int wpa_config_parse_machine_password(const struct parse_data *data,
1685 					     struct wpa_ssid *ssid, int line,
1686 					     const char *value)
1687 {
1688 	u8 *hash;
1689 
1690 	if (os_strcmp(value, "NULL") == 0) {
1691 		if (!ssid->eap.machine_password)
1692 			return 1; /* Already unset */
1693 		wpa_printf(MSG_DEBUG,
1694 			   "Unset configuration string 'machine_password'");
1695 		bin_clear_free(ssid->eap.machine_password,
1696 			       ssid->eap.machine_password_len);
1697 		ssid->eap.machine_password = NULL;
1698 		ssid->eap.machine_password_len = 0;
1699 		return 0;
1700 	}
1701 
1702 #ifdef CONFIG_EXT_PASSWORD
1703 	if (os_strncmp(value, "ext:", 4) == 0) {
1704 		char *name = os_strdup(value + 4);
1705 
1706 		if (!name)
1707 			return -1;
1708 		bin_clear_free(ssid->eap.machine_password,
1709 			       ssid->eap.machine_password_len);
1710 		ssid->eap.machine_password = (u8 *) name;
1711 		ssid->eap.machine_password_len = os_strlen(name);
1712 		ssid->eap.flags &= ~EAP_CONFIG_FLAGS_MACHINE_PASSWORD_NTHASH;
1713 		ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_MACHINE_PASSWORD;
1714 		return 0;
1715 	}
1716 #endif /* CONFIG_EXT_PASSWORD */
1717 
1718 	if (os_strncmp(value, "hash:", 5) != 0) {
1719 		char *tmp;
1720 		size_t res_len;
1721 
1722 		tmp = wpa_config_parse_string(value, &res_len);
1723 		if (!tmp) {
1724 			wpa_printf(MSG_ERROR,
1725 				   "Line %d: failed to parse machine_password.",
1726 				   line);
1727 			return -1;
1728 		}
1729 		wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
1730 				      (u8 *) tmp, res_len);
1731 
1732 		bin_clear_free(ssid->eap.machine_password,
1733 			       ssid->eap.machine_password_len);
1734 		ssid->eap.machine_password = (u8 *) tmp;
1735 		ssid->eap.machine_password_len = res_len;
1736 		ssid->eap.flags &= ~EAP_CONFIG_FLAGS_MACHINE_PASSWORD_NTHASH;
1737 		ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_MACHINE_PASSWORD;
1738 
1739 		return 0;
1740 	}
1741 
1742 
1743 	/* NtPasswordHash: hash:<32 hex digits> */
1744 	if (os_strlen(value + 5) != 2 * 16) {
1745 		wpa_printf(MSG_ERROR,
1746 			   "Line %d: Invalid machine_password hash length (expected 32 hex digits)",
1747 			   line);
1748 		return -1;
1749 	}
1750 
1751 	hash = os_malloc(16);
1752 	if (!hash)
1753 		return -1;
1754 
1755 	if (hexstr2bin(value + 5, hash, 16)) {
1756 		os_free(hash);
1757 		wpa_printf(MSG_ERROR, "Line %d: Invalid machine_password hash",
1758 			   line);
1759 		return -1;
1760 	}
1761 
1762 	wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
1763 
1764 	if (ssid->eap.machine_password &&
1765 	    ssid->eap.machine_password_len == 16 &&
1766 	    os_memcmp(ssid->eap.machine_password, hash, 16) == 0 &&
1767 	    (ssid->eap.flags & EAP_CONFIG_FLAGS_MACHINE_PASSWORD_NTHASH)) {
1768 		bin_clear_free(hash, 16);
1769 		return 1;
1770 	}
1771 	bin_clear_free(ssid->eap.machine_password,
1772 		       ssid->eap.machine_password_len);
1773 	ssid->eap.machine_password = hash;
1774 	ssid->eap.machine_password_len = 16;
1775 	ssid->eap.flags |= EAP_CONFIG_FLAGS_MACHINE_PASSWORD_NTHASH;
1776 	ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_MACHINE_PASSWORD;
1777 
1778 	return 0;
1779 }
1780 
1781 
1782 #ifndef NO_CONFIG_WRITE
1783 
wpa_config_write_password(const struct parse_data * data,struct wpa_ssid * ssid)1784 static char * wpa_config_write_password(const struct parse_data *data,
1785 					struct wpa_ssid *ssid)
1786 {
1787 	char *buf;
1788 
1789 	if (!ssid->eap.password)
1790 		return NULL;
1791 
1792 #ifdef CONFIG_EXT_PASSWORD
1793 	if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) {
1794 		buf = os_zalloc(4 + ssid->eap.password_len + 1);
1795 		if (!buf)
1796 			return NULL;
1797 		os_memcpy(buf, "ext:", 4);
1798 		os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len);
1799 		return buf;
1800 	}
1801 #endif /* CONFIG_EXT_PASSWORD */
1802 
1803 	if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
1804 		return wpa_config_write_string(
1805 			ssid->eap.password, ssid->eap.password_len);
1806 	}
1807 
1808 	buf = os_malloc(5 + 32 + 1);
1809 	if (!buf)
1810 		return NULL;
1811 
1812 	os_memcpy(buf, "hash:", 5);
1813 	wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
1814 
1815 	return buf;
1816 }
1817 
1818 
wpa_config_write_machine_password(const struct parse_data * data,struct wpa_ssid * ssid)1819 static char * wpa_config_write_machine_password(const struct parse_data *data,
1820 						struct wpa_ssid *ssid)
1821 {
1822 	char *buf;
1823 
1824 	if (!ssid->eap.machine_password)
1825 		return NULL;
1826 
1827 #ifdef CONFIG_EXT_PASSWORD
1828 	if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_MACHINE_PASSWORD) {
1829 		buf = os_zalloc(4 + ssid->eap.machine_password_len + 1);
1830 		if (!buf)
1831 			return NULL;
1832 		os_memcpy(buf, "ext:", 4);
1833 		os_memcpy(buf + 4, ssid->eap.machine_password,
1834 			  ssid->eap.machine_password_len);
1835 		return buf;
1836 	}
1837 #endif /* CONFIG_EXT_PASSWORD */
1838 
1839 	if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_MACHINE_PASSWORD_NTHASH)) {
1840 		return wpa_config_write_string(
1841 			ssid->eap.machine_password,
1842 			ssid->eap.machine_password_len);
1843 	}
1844 
1845 	buf = os_malloc(5 + 32 + 1);
1846 	if (!buf)
1847 		return NULL;
1848 
1849 	os_memcpy(buf, "hash:", 5);
1850 	wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.machine_password, 16);
1851 
1852 	return buf;
1853 }
1854 
1855 #endif /* NO_CONFIG_WRITE */
1856 #endif /* IEEE8021X_EAPOL */
1857 
1858 
1859 #ifdef CONFIG_WEP
1860 
wpa_config_parse_wep_key(u8 * key,size_t * len,int line,const char * value,int idx)1861 static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
1862 				    const char *value, int idx)
1863 {
1864 	char *buf, title[20];
1865 	int res;
1866 
1867 	buf = wpa_config_parse_string(value, len);
1868 	if (buf == NULL) {
1869 		wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
1870 			   line, idx, value);
1871 		return -1;
1872 	}
1873 	if (*len > MAX_WEP_KEY_LEN) {
1874 		wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
1875 			   line, idx, value);
1876 		os_free(buf);
1877 		return -1;
1878 	}
1879 	if (*len && *len != 5 && *len != 13 && *len != 16) {
1880 		wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - "
1881 			   "this network block will be ignored",
1882 			   line, (unsigned int) *len);
1883 	}
1884 	os_memcpy(key, buf, *len);
1885 	str_clear_free(buf);
1886 	res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
1887 	if (!os_snprintf_error(sizeof(title), res))
1888 		wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
1889 	return 0;
1890 }
1891 
1892 
wpa_config_parse_wep_key0(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1893 static int wpa_config_parse_wep_key0(const struct parse_data *data,
1894 				     struct wpa_ssid *ssid, int line,
1895 				     const char *value)
1896 {
1897 	return wpa_config_parse_wep_key(ssid->wep_key[0],
1898 					&ssid->wep_key_len[0], line,
1899 					value, 0);
1900 }
1901 
1902 
wpa_config_parse_wep_key1(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1903 static int wpa_config_parse_wep_key1(const struct parse_data *data,
1904 				     struct wpa_ssid *ssid, int line,
1905 				     const char *value)
1906 {
1907 	return wpa_config_parse_wep_key(ssid->wep_key[1],
1908 					&ssid->wep_key_len[1], line,
1909 					value, 1);
1910 }
1911 
1912 
wpa_config_parse_wep_key2(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1913 static int wpa_config_parse_wep_key2(const struct parse_data *data,
1914 				     struct wpa_ssid *ssid, int line,
1915 				     const char *value)
1916 {
1917 	return wpa_config_parse_wep_key(ssid->wep_key[2],
1918 					&ssid->wep_key_len[2], line,
1919 					value, 2);
1920 }
1921 
1922 
wpa_config_parse_wep_key3(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1923 static int wpa_config_parse_wep_key3(const struct parse_data *data,
1924 				     struct wpa_ssid *ssid, int line,
1925 				     const char *value)
1926 {
1927 	return wpa_config_parse_wep_key(ssid->wep_key[3],
1928 					&ssid->wep_key_len[3], line,
1929 					value, 3);
1930 }
1931 
1932 
1933 #ifndef NO_CONFIG_WRITE
wpa_config_write_wep_key(struct wpa_ssid * ssid,int idx)1934 static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
1935 {
1936 	if (ssid->wep_key_len[idx] == 0)
1937 		return NULL;
1938 	return wpa_config_write_string(ssid->wep_key[idx],
1939 				       ssid->wep_key_len[idx]);
1940 }
1941 
1942 
wpa_config_write_wep_key0(const struct parse_data * data,struct wpa_ssid * ssid)1943 static char * wpa_config_write_wep_key0(const struct parse_data *data,
1944 					struct wpa_ssid *ssid)
1945 {
1946 	return wpa_config_write_wep_key(ssid, 0);
1947 }
1948 
1949 
wpa_config_write_wep_key1(const struct parse_data * data,struct wpa_ssid * ssid)1950 static char * wpa_config_write_wep_key1(const struct parse_data *data,
1951 					struct wpa_ssid *ssid)
1952 {
1953 	return wpa_config_write_wep_key(ssid, 1);
1954 }
1955 
1956 
wpa_config_write_wep_key2(const struct parse_data * data,struct wpa_ssid * ssid)1957 static char * wpa_config_write_wep_key2(const struct parse_data *data,
1958 					struct wpa_ssid *ssid)
1959 {
1960 	return wpa_config_write_wep_key(ssid, 2);
1961 }
1962 
1963 
wpa_config_write_wep_key3(const struct parse_data * data,struct wpa_ssid * ssid)1964 static char * wpa_config_write_wep_key3(const struct parse_data *data,
1965 					struct wpa_ssid *ssid)
1966 {
1967 	return wpa_config_write_wep_key(ssid, 3);
1968 }
1969 #endif /* NO_CONFIG_WRITE */
1970 
1971 #endif /* CONFIG_WEP */
1972 
1973 
1974 #ifdef CONFIG_P2P
1975 
wpa_config_parse_go_p2p_dev_addr(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)1976 static int wpa_config_parse_go_p2p_dev_addr(const struct parse_data *data,
1977 					    struct wpa_ssid *ssid, int line,
1978 					    const char *value)
1979 {
1980 	if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
1981 	    os_strcmp(value, "any") == 0) {
1982 		os_memset(ssid->go_p2p_dev_addr, 0, ETH_ALEN);
1983 		wpa_printf(MSG_MSGDUMP, "GO P2P Device Address any");
1984 		return 0;
1985 	}
1986 	if (hwaddr_aton(value, ssid->go_p2p_dev_addr)) {
1987 		wpa_printf(MSG_ERROR, "Line %d: Invalid GO P2P Device Address '%s'.",
1988 			   line, value);
1989 		return -1;
1990 	}
1991 	ssid->bssid_set = 1;
1992 	wpa_printf(MSG_MSGDUMP, "GO P2P Device Address " MACSTR,
1993 		   MAC2STR(ssid->go_p2p_dev_addr));
1994 	return 0;
1995 }
1996 
1997 
1998 #ifndef NO_CONFIG_WRITE
wpa_config_write_go_p2p_dev_addr(const struct parse_data * data,struct wpa_ssid * ssid)1999 static char * wpa_config_write_go_p2p_dev_addr(const struct parse_data *data,
2000 					       struct wpa_ssid *ssid)
2001 {
2002 	char *value;
2003 	int res;
2004 
2005 	if (is_zero_ether_addr(ssid->go_p2p_dev_addr))
2006 		return NULL;
2007 
2008 	value = os_malloc(20);
2009 	if (value == NULL)
2010 		return NULL;
2011 	res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->go_p2p_dev_addr));
2012 	if (os_snprintf_error(20, res)) {
2013 		os_free(value);
2014 		return NULL;
2015 	}
2016 	value[20 - 1] = '\0';
2017 	return value;
2018 }
2019 #endif /* NO_CONFIG_WRITE */
2020 
2021 
wpa_config_parse_p2p_client_list(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)2022 static int wpa_config_parse_p2p_client_list(const struct parse_data *data,
2023 					    struct wpa_ssid *ssid, int line,
2024 					    const char *value)
2025 {
2026 	return wpa_config_parse_addr_list(data, line, value,
2027 					  &ssid->p2p_client_list,
2028 					  &ssid->num_p2p_clients,
2029 					  "p2p_client_list", 0, 0);
2030 }
2031 
2032 
2033 #ifndef NO_CONFIG_WRITE
wpa_config_write_p2p_client_list(const struct parse_data * data,struct wpa_ssid * ssid)2034 static char * wpa_config_write_p2p_client_list(const struct parse_data *data,
2035 					       struct wpa_ssid *ssid)
2036 {
2037 	return wpa_config_write_addr_list(data, ssid->p2p_client_list,
2038 					  ssid->num_p2p_clients,
2039 					  "p2p_client_list");
2040 }
2041 #endif /* NO_CONFIG_WRITE */
2042 
2043 
wpa_config_parse_psk_list(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)2044 static int wpa_config_parse_psk_list(const struct parse_data *data,
2045 				     struct wpa_ssid *ssid, int line,
2046 				     const char *value)
2047 {
2048 	struct psk_list_entry *p;
2049 	const char *pos;
2050 
2051 	p = os_zalloc(sizeof(*p));
2052 	if (p == NULL)
2053 		return -1;
2054 
2055 	pos = value;
2056 	if (os_strncmp(pos, "P2P-", 4) == 0) {
2057 		p->p2p = 1;
2058 		pos += 4;
2059 	}
2060 
2061 	if (hwaddr_aton(pos, p->addr)) {
2062 		wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list address '%s'",
2063 			   line, pos);
2064 		os_free(p);
2065 		return -1;
2066 	}
2067 	pos += 17;
2068 	if (*pos != '-') {
2069 		wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list '%s'",
2070 			   line, pos);
2071 		os_free(p);
2072 		return -1;
2073 	}
2074 	pos++;
2075 
2076 	if (hexstr2bin(pos, p->psk, PMK_LEN) || pos[PMK_LEN * 2] != '\0') {
2077 		wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list PSK '%s'",
2078 			   line, pos);
2079 		os_free(p);
2080 		return -1;
2081 	}
2082 
2083 	dl_list_add(&ssid->psk_list, &p->list);
2084 
2085 	return 0;
2086 }
2087 
2088 
2089 #ifndef NO_CONFIG_WRITE
wpa_config_write_psk_list(const struct parse_data * data,struct wpa_ssid * ssid)2090 static char * wpa_config_write_psk_list(const struct parse_data *data,
2091 					struct wpa_ssid *ssid)
2092 {
2093 	return NULL;
2094 }
2095 #endif /* NO_CONFIG_WRITE */
2096 
2097 #endif /* CONFIG_P2P */
2098 
2099 
2100 #ifdef CONFIG_MESH
2101 
wpa_config_parse_mesh_basic_rates(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)2102 static int wpa_config_parse_mesh_basic_rates(const struct parse_data *data,
2103 					     struct wpa_ssid *ssid, int line,
2104 					     const char *value)
2105 {
2106 	int *rates = wpa_config_parse_int_array(value);
2107 
2108 	if (rates == NULL) {
2109 		wpa_printf(MSG_ERROR, "Line %d: Invalid mesh_basic_rates '%s'",
2110 			   line, value);
2111 		return -1;
2112 	}
2113 	if (rates[0] == 0) {
2114 		os_free(rates);
2115 		rates = NULL;
2116 	}
2117 
2118 	os_free(ssid->mesh_basic_rates);
2119 	ssid->mesh_basic_rates = rates;
2120 
2121 	return 0;
2122 }
2123 
2124 
2125 #ifndef NO_CONFIG_WRITE
2126 
wpa_config_write_mesh_basic_rates(const struct parse_data * data,struct wpa_ssid * ssid)2127 static char * wpa_config_write_mesh_basic_rates(const struct parse_data *data,
2128 						struct wpa_ssid *ssid)
2129 {
2130 	return wpa_config_write_freqs(data, ssid->mesh_basic_rates);
2131 }
2132 
2133 #endif /* NO_CONFIG_WRITE */
2134 
2135 #endif /* CONFIG_MESH */
2136 
2137 
2138 #ifdef CONFIG_MACSEC
2139 
wpa_config_parse_mka_cak(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)2140 static int wpa_config_parse_mka_cak(const struct parse_data *data,
2141 				    struct wpa_ssid *ssid, int line,
2142 				    const char *value)
2143 {
2144 	size_t len;
2145 
2146 	len = os_strlen(value);
2147 	if (len > 2 * MACSEC_CAK_MAX_LEN ||
2148 	    (len != 2 * 16 && len != 2 * 32) ||
2149 	    hexstr2bin(value, ssid->mka_cak, len / 2)) {
2150 		wpa_printf(MSG_ERROR, "Line %d: Invalid MKA-CAK '%s'.",
2151 			   line, value);
2152 		return -1;
2153 	}
2154 	ssid->mka_cak_len = len / 2;
2155 	ssid->mka_psk_set |= MKA_PSK_SET_CAK;
2156 
2157 	wpa_hexdump_key(MSG_MSGDUMP, "MKA-CAK", ssid->mka_cak,
2158 			ssid->mka_cak_len);
2159 	return 0;
2160 }
2161 
2162 
wpa_config_parse_mka_ckn(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)2163 static int wpa_config_parse_mka_ckn(const struct parse_data *data,
2164 				    struct wpa_ssid *ssid, int line,
2165 				    const char *value)
2166 {
2167 	size_t len;
2168 
2169 	len = os_strlen(value);
2170 	if (len > 2 * MACSEC_CKN_MAX_LEN || /* too long */
2171 	    len < 2 || /* too short */
2172 	    len % 2 != 0 /* not an integral number of bytes */) {
2173 		wpa_printf(MSG_ERROR, "Line %d: Invalid MKA-CKN '%s'.",
2174 			   line, value);
2175 		return -1;
2176 	}
2177 	ssid->mka_ckn_len = len / 2;
2178 	if (hexstr2bin(value, ssid->mka_ckn, ssid->mka_ckn_len)) {
2179 		wpa_printf(MSG_ERROR, "Line %d: Invalid MKA-CKN '%s'.",
2180 			   line, value);
2181 		return -1;
2182 	}
2183 
2184 	ssid->mka_psk_set |= MKA_PSK_SET_CKN;
2185 
2186 	wpa_hexdump_key(MSG_MSGDUMP, "MKA-CKN", ssid->mka_ckn,
2187 			ssid->mka_ckn_len);
2188 	return 0;
2189 }
2190 
2191 
2192 #ifndef NO_CONFIG_WRITE
2193 
wpa_config_write_mka_cak(const struct parse_data * data,struct wpa_ssid * ssid)2194 static char * wpa_config_write_mka_cak(const struct parse_data *data,
2195 				       struct wpa_ssid *ssid)
2196 {
2197 	if (!(ssid->mka_psk_set & MKA_PSK_SET_CAK))
2198 		return NULL;
2199 
2200 	return wpa_config_write_string_hex(ssid->mka_cak, ssid->mka_cak_len);
2201 }
2202 
2203 
wpa_config_write_mka_ckn(const struct parse_data * data,struct wpa_ssid * ssid)2204 static char * wpa_config_write_mka_ckn(const struct parse_data *data,
2205 				       struct wpa_ssid *ssid)
2206 {
2207 	if (!(ssid->mka_psk_set & MKA_PSK_SET_CKN))
2208 		return NULL;
2209 	return wpa_config_write_string_hex(ssid->mka_ckn, ssid->mka_ckn_len);
2210 }
2211 
2212 #endif /* NO_CONFIG_WRITE */
2213 
2214 #endif /* CONFIG_MACSEC */
2215 
2216 
2217 #ifdef CONFIG_OCV
2218 
wpa_config_parse_ocv(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)2219 static int wpa_config_parse_ocv(const struct parse_data *data,
2220 				struct wpa_ssid *ssid, int line,
2221 				const char *value)
2222 {
2223 	char *end;
2224 
2225 	ssid->ocv = strtol(value, &end, 0);
2226 	if (*end || ssid->ocv < 0 || ssid->ocv > 1) {
2227 		wpa_printf(MSG_ERROR, "Line %d: Invalid ocv value '%s'.",
2228 			   line, value);
2229 		return -1;
2230 	}
2231 	if (ssid->ocv && ssid->ieee80211w == NO_MGMT_FRAME_PROTECTION)
2232 		ssid->ieee80211w = MGMT_FRAME_PROTECTION_OPTIONAL;
2233 	return 0;
2234 }
2235 
2236 
2237 #ifndef NO_CONFIG_WRITE
wpa_config_write_ocv(const struct parse_data * data,struct wpa_ssid * ssid)2238 static char * wpa_config_write_ocv(const struct parse_data *data,
2239 				   struct wpa_ssid *ssid)
2240 {
2241 	char *value = os_malloc(20);
2242 
2243 	if (!value)
2244 		return NULL;
2245 	os_snprintf(value, 20, "%d", ssid->ocv);
2246 	value[20 - 1] = '\0';
2247 	return value;
2248 }
2249 #endif /* NO_CONFIG_WRITE */
2250 
2251 #endif /* CONFIG_OCV */
2252 
2253 
wpa_config_parse_peerkey(const struct parse_data * data,struct wpa_ssid * ssid,int line,const char * value)2254 static int wpa_config_parse_peerkey(const struct parse_data *data,
2255 				    struct wpa_ssid *ssid, int line,
2256 				    const char *value)
2257 {
2258 	wpa_printf(MSG_INFO, "NOTE: Obsolete peerkey parameter ignored");
2259 	return 0;
2260 }
2261 
2262 
2263 #ifndef NO_CONFIG_WRITE
wpa_config_write_peerkey(const struct parse_data * data,struct wpa_ssid * ssid)2264 static char * wpa_config_write_peerkey(const struct parse_data *data,
2265 				       struct wpa_ssid *ssid)
2266 {
2267 	return NULL;
2268 }
2269 #endif /* NO_CONFIG_WRITE */
2270 
2271 
2272 /* Helper macros for network block parser */
2273 
2274 #ifdef OFFSET
2275 #undef OFFSET
2276 #endif /* OFFSET */
2277 /* OFFSET: Get offset of a variable within the wpa_ssid structure */
2278 #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
2279 
2280 /* STR: Define a string variable for an ASCII string; f = field name */
2281 #ifdef NO_CONFIG_WRITE
2282 #define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
2283 #define _STRe(f, m) #f, wpa_config_parse_str, OFFSET(eap.m)
2284 #else /* NO_CONFIG_WRITE */
2285 #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
2286 #define _STRe(f, m) #f, wpa_config_parse_str, wpa_config_write_str, \
2287 		OFFSET(eap.m)
2288 #endif /* NO_CONFIG_WRITE */
2289 #define STR(f) _STR(f), NULL, NULL, NULL, 0
2290 #define STRe(f, m) _STRe(f, m), NULL, NULL, NULL, 0
2291 #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
2292 #define STR_KEYe(f, m) _STRe(f, m), NULL, NULL, NULL, 1
2293 
2294 /* STR_LEN: Define a string variable with a separate variable for storing the
2295  * data length. Unlike STR(), this can be used to store arbitrary binary data
2296  * (i.e., even nul termination character). */
2297 #define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
2298 #define _STR_LENe(f, m) _STRe(f, m), OFFSET(eap.m ## _len)
2299 #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
2300 #define STR_LENe(f, m) _STR_LENe(f, m), NULL, NULL, 0
2301 #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
2302 
2303 /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
2304  * explicitly specified. */
2305 #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
2306 #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
2307 #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
2308 
2309 #ifdef NO_CONFIG_WRITE
2310 #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
2311 #define _INTe(f, m) #f, wpa_config_parse_int, OFFSET(eap.m), (void *) 0
2312 #else /* NO_CONFIG_WRITE */
2313 #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
2314 	OFFSET(f), (void *) 0
2315 #define _INTe(f, m) #f, wpa_config_parse_int, wpa_config_write_int,	\
2316 	OFFSET(eap.m), (void *) 0
2317 #endif /* NO_CONFIG_WRITE */
2318 
2319 /* INT: Define an integer variable */
2320 #define INT(f) _INT(f), NULL, NULL, 0
2321 #define INTe(f, m) _INTe(f, m), NULL, NULL, 0
2322 
2323 /* INT_RANGE: Define an integer variable with allowed value range */
2324 #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
2325 
2326 /* FUNC: Define a configuration variable that uses a custom function for
2327  * parsing and writing the value. */
2328 #ifdef NO_CONFIG_WRITE
2329 #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
2330 #else /* NO_CONFIG_WRITE */
2331 #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
2332 	NULL, NULL, NULL, NULL
2333 #endif /* NO_CONFIG_WRITE */
2334 #define FUNC(f) _FUNC(f), 0
2335 #define FUNC_KEY(f) _FUNC(f), 1
2336 
2337 /*
2338  * Table of network configuration variables. This table is used to parse each
2339  * network configuration variable, e.g., each line in wpa_supplicant.conf file
2340  * that is inside a network block.
2341  *
2342  * This table is generated using the helper macros defined above and with
2343  * generous help from the C pre-processor. The field name is stored as a string
2344  * into .name and for STR and INT types, the offset of the target buffer within
2345  * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
2346  * offset to the field containing the length of the configuration variable.
2347  * .param3 and .param4 can be used to mark the allowed range (length for STR
2348  * and value for INT).
2349  *
2350  * For each configuration line in wpa_supplicant.conf, the parser goes through
2351  * this table and select the entry that matches with the field name. The parser
2352  * function (.parser) is then called to parse the actual value of the field.
2353  *
2354  * This kind of mechanism makes it easy to add new configuration parameters,
2355  * since only one line needs to be added into this table and into the
2356  * struct wpa_ssid definition if the new variable is either a string or
2357  * integer. More complex types will need to use their own parser and writer
2358  * functions.
2359  */
2360 static const struct parse_data ssid_fields[] = {
2361 	{ STR_RANGE(ssid, 0, SSID_MAX_LEN) },
2362 	{ INT_RANGE(scan_ssid, 0, 1) },
2363 	{ FUNC(bssid) },
2364 	{ FUNC(bssid_hint) },
2365 	{ FUNC(bssid_blacklist) },
2366 	{ FUNC(bssid_whitelist) },
2367 	{ FUNC_KEY(psk) },
2368 	{ INT(mem_only_psk) },
2369 	{ STR_KEY(sae_password) },
2370 	{ STR(sae_password_id) },
2371 	{ FUNC(proto) },
2372 	{ FUNC(key_mgmt) },
2373 	{ INT(bg_scan_period) },
2374 	{ FUNC(pairwise) },
2375 	{ FUNC(group) },
2376 	{ FUNC(group_mgmt) },
2377 	{ FUNC(auth_alg) },
2378 	{ FUNC(scan_freq) },
2379 	{ FUNC(freq_list) },
2380 	{ INT_RANGE(ht, 0, 1) },
2381 	{ INT_RANGE(vht, 0, 1) },
2382 	{ INT_RANGE(ht40, -1, 1) },
2383 	{ INT_RANGE(max_oper_chwidth, CHANWIDTH_USE_HT,
2384 		    CHANWIDTH_80P80MHZ) },
2385 	{ INT(vht_center_freq1) },
2386 	{ INT(vht_center_freq2) },
2387 #ifdef IEEE8021X_EAPOL
2388 	{ FUNC(eap) },
2389 	{ STR_LENe(identity, identity) },
2390 	{ STR_LENe(anonymous_identity, anonymous_identity) },
2391 	{ STR_LENe(imsi_identity, imsi_identity) },
2392 	{ STR_LENe(machine_identity, machine_identity) },
2393 	{ FUNC_KEY(password) },
2394 	{ FUNC_KEY(machine_password) },
2395 	{ STRe(ca_cert, cert.ca_cert) },
2396 	{ STRe(ca_path, cert.ca_path) },
2397 	{ STRe(client_cert, cert.client_cert) },
2398 	{ STRe(private_key, cert.private_key) },
2399 	{ STR_KEYe(private_key_passwd, cert.private_key_passwd) },
2400 	{ STRe(dh_file, cert.dh_file) },
2401 	{ STRe(subject_match, cert.subject_match) },
2402 	{ STRe(check_cert_subject, cert.check_cert_subject) },
2403 	{ STRe(altsubject_match, cert.altsubject_match) },
2404 	{ STRe(domain_suffix_match, cert.domain_suffix_match) },
2405 	{ STRe(domain_match, cert.domain_match) },
2406 	{ STRe(ca_cert2, phase2_cert.ca_cert) },
2407 	{ STRe(ca_path2, phase2_cert.ca_path) },
2408 	{ STRe(client_cert2, phase2_cert.client_cert) },
2409 	{ STRe(private_key2, phase2_cert.private_key) },
2410 	{ STR_KEYe(private_key2_passwd, phase2_cert.private_key_passwd) },
2411 	{ STRe(dh_file2, phase2_cert.dh_file) },
2412 	{ STRe(subject_match2, phase2_cert.subject_match) },
2413 	{ STRe(check_cert_subject2, phase2_cert.check_cert_subject) },
2414 	{ STRe(altsubject_match2, phase2_cert.altsubject_match) },
2415 	{ STRe(domain_suffix_match2, phase2_cert.domain_suffix_match) },
2416 	{ STRe(domain_match2, phase2_cert.domain_match) },
2417 	{ STRe(phase1, phase1) },
2418 	{ STRe(phase2, phase2) },
2419 	{ STRe(machine_phase2, machine_phase2) },
2420 	{ STRe(pcsc, pcsc) },
2421 	{ STR_KEYe(pin, cert.pin) },
2422 	{ STRe(engine_id, cert.engine_id) },
2423 	{ STRe(key_id, cert.key_id) },
2424 	{ STRe(cert_id, cert.cert_id) },
2425 	{ STRe(ca_cert_id, cert.ca_cert_id) },
2426 	{ STR_KEYe(pin2, phase2_cert.pin) },
2427 	{ STRe(engine_id2, phase2_cert.engine_id) },
2428 	{ STRe(key_id2, phase2_cert.key_id) },
2429 	{ STRe(cert_id2, phase2_cert.cert_id) },
2430 	{ STRe(ca_cert_id2, phase2_cert.ca_cert_id) },
2431 	{ INTe(engine, cert.engine) },
2432 	{ INTe(engine2, phase2_cert.engine) },
2433 	{ STRe(machine_ca_cert, machine_cert.ca_cert) },
2434 	{ STRe(machine_ca_path, machine_cert.ca_path) },
2435 	{ STRe(machine_client_cert, machine_cert.client_cert) },
2436 	{ STRe(machine_private_key, machine_cert.private_key) },
2437 	{ STR_KEYe(machine_private_key_passwd,
2438 		   machine_cert.private_key_passwd) },
2439 	{ STRe(machine_dh_file, machine_cert.dh_file) },
2440 	{ STRe(machine_subject_match, machine_cert.subject_match) },
2441 	{ STRe(machine_check_cert_subject, machine_cert.check_cert_subject) },
2442 	{ STRe(machine_altsubject_match, machine_cert.altsubject_match) },
2443 	{ STRe(machine_domain_suffix_match,
2444 	       machine_cert.domain_suffix_match) },
2445 	{ STRe(machine_domain_match, machine_cert.domain_match) },
2446 	{ STR_KEYe(machine_pin, machine_cert.pin) },
2447 	{ STRe(machine_engine_id, machine_cert.engine_id) },
2448 	{ STRe(machine_key_id, machine_cert.key_id) },
2449 	{ STRe(machine_cert_id, machine_cert.cert_id) },
2450 	{ STRe(machine_ca_cert_id, machine_cert.ca_cert_id) },
2451 	{ INTe(machine_engine, machine_cert.engine) },
2452 	{ INTe(machine_ocsp, machine_cert.ocsp) },
2453 	{ INT(eapol_flags) },
2454 	{ INTe(sim_num, sim_num) },
2455 	{ STRe(openssl_ciphers, openssl_ciphers) },
2456 	{ INTe(erp, erp) },
2457 #endif /* IEEE8021X_EAPOL */
2458 #ifdef CONFIG_WEP
2459 	{ FUNC_KEY(wep_key0) },
2460 	{ FUNC_KEY(wep_key1) },
2461 	{ FUNC_KEY(wep_key2) },
2462 	{ FUNC_KEY(wep_key3) },
2463 	{ INT(wep_tx_keyidx) },
2464 #endif /* CONFIG_WEP */
2465 	{ INT(priority) },
2466 #ifdef IEEE8021X_EAPOL
2467 	{ INT(eap_workaround) },
2468 	{ STRe(pac_file, pac_file) },
2469 	{ INTe(fragment_size, fragment_size) },
2470 	{ INTe(ocsp, cert.ocsp) },
2471 	{ INTe(ocsp2, phase2_cert.ocsp) },
2472 #endif /* IEEE8021X_EAPOL */
2473 #ifdef CONFIG_MESH
2474 	{ INT_RANGE(mode, 0, 5) },
2475 	{ INT_RANGE(no_auto_peer, 0, 1) },
2476 	{ INT_RANGE(mesh_rssi_threshold, -255, 1) },
2477 #else /* CONFIG_MESH */
2478 	{ INT_RANGE(mode, 0, 4) },
2479 #endif /* CONFIG_MESH */
2480 	{ INT_RANGE(proactive_key_caching, 0, 1) },
2481 	{ INT_RANGE(disabled, 0, 2) },
2482 	{ STR(id_str) },
2483 	{ INT_RANGE(ieee80211w, 0, 2) },
2484 #ifdef CONFIG_OCV
2485 	{ FUNC(ocv) },
2486 #endif /* CONFIG_OCV */
2487 	{ FUNC(peerkey) /* obsolete - removed */ },
2488 	{ INT_RANGE(mixed_cell, 0, 1) },
2489 	{ INT_RANGE(frequency, 0, 70200) },
2490 	{ INT_RANGE(fixed_freq, 0, 1) },
2491 	{ INT_RANGE(enable_edmg, 0, 1) },
2492 	{ INT_RANGE(edmg_channel, 9, 13) },
2493 #ifdef CONFIG_ACS
2494 	{ INT_RANGE(acs, 0, 1) },
2495 #endif /* CONFIG_ACS */
2496 #ifdef CONFIG_MESH
2497 	{ FUNC(mesh_basic_rates) },
2498 	{ INT(dot11MeshMaxRetries) },
2499 	{ INT(dot11MeshRetryTimeout) },
2500 	{ INT(dot11MeshConfirmTimeout) },
2501 	{ INT(dot11MeshHoldingTimeout) },
2502 #endif /* CONFIG_MESH */
2503 	{ INT(wpa_ptk_rekey) },
2504 	{ INT_RANGE(wpa_deny_ptk0_rekey, 0, 2) },
2505 	{ INT(group_rekey) },
2506 	{ STR(bgscan) },
2507 	{ INT_RANGE(ignore_broadcast_ssid, 0, 2) },
2508 #ifdef CONFIG_P2P
2509 	{ FUNC(go_p2p_dev_addr) },
2510 	{ FUNC(p2p_client_list) },
2511 	{ FUNC(psk_list) },
2512 #endif /* CONFIG_P2P */
2513 #ifdef CONFIG_HT_OVERRIDES
2514 	{ INT_RANGE(disable_ht, 0, 1) },
2515 	{ INT_RANGE(disable_ht40, -1, 1) },
2516 	{ INT_RANGE(disable_sgi, 0, 1) },
2517 	{ INT_RANGE(disable_ldpc, 0, 1) },
2518 	{ INT_RANGE(ht40_intolerant, 0, 1) },
2519 	{ INT_RANGE(tx_stbc, -1, 1) },
2520 	{ INT_RANGE(rx_stbc, -1, 3) },
2521 	{ INT_RANGE(disable_max_amsdu, -1, 1) },
2522 	{ INT_RANGE(ampdu_factor, -1, 3) },
2523 	{ INT_RANGE(ampdu_density, -1, 7) },
2524 	{ STR(ht_mcs) },
2525 #endif /* CONFIG_HT_OVERRIDES */
2526 #ifdef CONFIG_VHT_OVERRIDES
2527 	{ INT_RANGE(disable_vht, 0, 1) },
2528 	{ INT(vht_capa) },
2529 	{ INT(vht_capa_mask) },
2530 	{ INT_RANGE(vht_rx_mcs_nss_1, -1, 3) },
2531 	{ INT_RANGE(vht_rx_mcs_nss_2, -1, 3) },
2532 	{ INT_RANGE(vht_rx_mcs_nss_3, -1, 3) },
2533 	{ INT_RANGE(vht_rx_mcs_nss_4, -1, 3) },
2534 	{ INT_RANGE(vht_rx_mcs_nss_5, -1, 3) },
2535 	{ INT_RANGE(vht_rx_mcs_nss_6, -1, 3) },
2536 	{ INT_RANGE(vht_rx_mcs_nss_7, -1, 3) },
2537 	{ INT_RANGE(vht_rx_mcs_nss_8, -1, 3) },
2538 	{ INT_RANGE(vht_tx_mcs_nss_1, -1, 3) },
2539 	{ INT_RANGE(vht_tx_mcs_nss_2, -1, 3) },
2540 	{ INT_RANGE(vht_tx_mcs_nss_3, -1, 3) },
2541 	{ INT_RANGE(vht_tx_mcs_nss_4, -1, 3) },
2542 	{ INT_RANGE(vht_tx_mcs_nss_5, -1, 3) },
2543 	{ INT_RANGE(vht_tx_mcs_nss_6, -1, 3) },
2544 	{ INT_RANGE(vht_tx_mcs_nss_7, -1, 3) },
2545 	{ INT_RANGE(vht_tx_mcs_nss_8, -1, 3) },
2546 #endif /* CONFIG_VHT_OVERRIDES */
2547 #ifdef CONFIG_HE_OVERRIDES
2548 	{ INT_RANGE(disable_he, 0, 1)},
2549 #endif /* CONFIG_HE_OVERRIDES */
2550 	{ INT(ap_max_inactivity) },
2551 	{ INT(dtim_period) },
2552 	{ INT(beacon_int) },
2553 #ifdef CONFIG_MACSEC
2554 	{ INT_RANGE(macsec_policy, 0, 1) },
2555 	{ INT_RANGE(macsec_integ_only, 0, 1) },
2556 	{ INT_RANGE(macsec_replay_protect, 0, 1) },
2557 	{ INT(macsec_replay_window) },
2558 	{ INT_RANGE(macsec_port, 1, 65534) },
2559 	{ INT_RANGE(mka_priority, 0, 255) },
2560 	{ FUNC_KEY(mka_cak) },
2561 	{ FUNC_KEY(mka_ckn) },
2562 #endif /* CONFIG_MACSEC */
2563 #ifdef CONFIG_HS20
2564 	{ INT(update_identifier) },
2565 	{ STR_RANGE(roaming_consortium_selection, 0, MAX_ROAMING_CONS_OI_LEN) },
2566 #endif /* CONFIG_HS20 */
2567 	{ INT_RANGE(mac_addr, 0, 2) },
2568 	{ INT_RANGE(pbss, 0, 2) },
2569 	{ INT_RANGE(wps_disabled, 0, 1) },
2570 	{ INT_RANGE(fils_dh_group, 0, 65535) },
2571 #ifdef CONFIG_DPP
2572 	{ STR(dpp_connector) },
2573 	{ STR_LEN(dpp_netaccesskey) },
2574 	{ INT(dpp_netaccesskey_expiry) },
2575 	{ STR_LEN(dpp_csign) },
2576 	{ INT_RANGE(dpp_pfs, 0, 2) },
2577 #endif /* CONFIG_DPP */
2578 	{ INT_RANGE(owe_group, 0, 65535) },
2579 	{ INT_RANGE(owe_only, 0, 1) },
2580 	{ INT_RANGE(owe_ptk_workaround, 0, 1) },
2581 	{ INT_RANGE(multi_ap_backhaul_sta, 0, 1) },
2582 	{ INT_RANGE(ft_eap_pmksa_caching, 0, 1) },
2583 	{ INT_RANGE(beacon_prot, 0, 1) },
2584 	{ INT_RANGE(transition_disable, 0, 255) },
2585 };
2586 
2587 #undef OFFSET
2588 #undef _STR
2589 #undef STR
2590 #undef STR_KEY
2591 #undef _STR_LEN
2592 #undef STR_LEN
2593 #undef STR_LEN_KEY
2594 #undef _STR_RANGE
2595 #undef STR_RANGE
2596 #undef STR_RANGE_KEY
2597 #undef _INT
2598 #undef INT
2599 #undef INT_RANGE
2600 #undef _FUNC
2601 #undef FUNC
2602 #undef FUNC_KEY
2603 #define NUM_SSID_FIELDS ARRAY_SIZE(ssid_fields)
2604 
2605 
2606 /**
2607  * wpa_config_add_prio_network - Add a network to priority lists
2608  * @config: Configuration data from wpa_config_read()
2609  * @ssid: Pointer to the network configuration to be added to the list
2610  * Returns: 0 on success, -1 on failure
2611  *
2612  * This function is used to add a network block to the priority list of
2613  * networks. This must be called for each network when reading in the full
2614  * configuration. In addition, this can be used indirectly when updating
2615  * priorities by calling wpa_config_update_prio_list().
2616  */
wpa_config_add_prio_network(struct wpa_config * config,struct wpa_ssid * ssid)2617 int wpa_config_add_prio_network(struct wpa_config *config,
2618 				struct wpa_ssid *ssid)
2619 {
2620 	size_t prio;
2621 	struct wpa_ssid *prev, **nlist;
2622 
2623 	/*
2624 	 * Add to an existing priority list if one is available for the
2625 	 * configured priority level for this network.
2626 	 */
2627 	for (prio = 0; prio < config->num_prio; prio++) {
2628 		prev = config->pssid[prio];
2629 		if (prev->priority == ssid->priority) {
2630 			while (prev->pnext)
2631 				prev = prev->pnext;
2632 			prev->pnext = ssid;
2633 			return 0;
2634 		}
2635 	}
2636 
2637 	/* First network for this priority - add a new priority list */
2638 	nlist = os_realloc_array(config->pssid, config->num_prio + 1,
2639 				 sizeof(struct wpa_ssid *));
2640 	if (nlist == NULL)
2641 		return -1;
2642 
2643 	for (prio = 0; prio < config->num_prio; prio++) {
2644 		if (nlist[prio]->priority < ssid->priority) {
2645 			os_memmove(&nlist[prio + 1], &nlist[prio],
2646 				   (config->num_prio - prio) *
2647 				   sizeof(struct wpa_ssid *));
2648 			break;
2649 		}
2650 	}
2651 
2652 	nlist[prio] = ssid;
2653 	config->num_prio++;
2654 	config->pssid = nlist;
2655 
2656 	return 0;
2657 }
2658 
2659 
2660 /**
2661  * wpa_config_update_prio_list - Update network priority list
2662  * @config: Configuration data from wpa_config_read()
2663  * Returns: 0 on success, -1 on failure
2664  *
2665  * This function is called to update the priority list of networks in the
2666  * configuration when a network is being added or removed. This is also called
2667  * if a priority for a network is changed.
2668  */
wpa_config_update_prio_list(struct wpa_config * config)2669 int wpa_config_update_prio_list(struct wpa_config *config)
2670 {
2671 	struct wpa_ssid *ssid;
2672 	int ret = 0;
2673 
2674 	os_free(config->pssid);
2675 	config->pssid = NULL;
2676 	config->num_prio = 0;
2677 
2678 	ssid = config->ssid;
2679 	while (ssid) {
2680 		ssid->pnext = NULL;
2681 		if (wpa_config_add_prio_network(config, ssid) < 0)
2682 			ret = -1;
2683 		ssid = ssid->next;
2684 	}
2685 
2686 	return ret;
2687 }
2688 
2689 
2690 #ifdef IEEE8021X_EAPOL
2691 
eap_peer_config_free_cert(struct eap_peer_cert_config * cert)2692 static void eap_peer_config_free_cert(struct eap_peer_cert_config *cert)
2693 {
2694 	os_free(cert->ca_cert);
2695 	os_free(cert->ca_path);
2696 	os_free(cert->client_cert);
2697 	os_free(cert->private_key);
2698 	str_clear_free(cert->private_key_passwd);
2699 	os_free(cert->dh_file);
2700 	os_free(cert->subject_match);
2701 	os_free(cert->check_cert_subject);
2702 	os_free(cert->altsubject_match);
2703 	os_free(cert->domain_suffix_match);
2704 	os_free(cert->domain_match);
2705 	str_clear_free(cert->pin);
2706 	os_free(cert->engine_id);
2707 	os_free(cert->key_id);
2708 	os_free(cert->cert_id);
2709 	os_free(cert->ca_cert_id);
2710 }
2711 
2712 
eap_peer_config_free(struct eap_peer_config * eap)2713 static void eap_peer_config_free(struct eap_peer_config *eap)
2714 {
2715 	os_free(eap->eap_methods);
2716 	bin_clear_free(eap->identity, eap->identity_len);
2717 	os_free(eap->anonymous_identity);
2718 	os_free(eap->imsi_identity);
2719 	os_free(eap->machine_identity);
2720 	bin_clear_free(eap->password, eap->password_len);
2721 	bin_clear_free(eap->machine_password, eap->machine_password_len);
2722 	eap_peer_config_free_cert(&eap->cert);
2723 	eap_peer_config_free_cert(&eap->phase2_cert);
2724 	eap_peer_config_free_cert(&eap->machine_cert);
2725 	os_free(eap->phase1);
2726 	os_free(eap->phase2);
2727 	os_free(eap->machine_phase2);
2728 	os_free(eap->pcsc);
2729 	os_free(eap->otp);
2730 	os_free(eap->pending_req_otp);
2731 	os_free(eap->pac_file);
2732 	bin_clear_free(eap->new_password, eap->new_password_len);
2733 	str_clear_free(eap->external_sim_resp);
2734 	os_free(eap->openssl_ciphers);
2735 }
2736 
2737 #endif /* IEEE8021X_EAPOL */
2738 
2739 
2740 /**
2741  * wpa_config_free_ssid - Free network/ssid configuration data
2742  * @ssid: Configuration data for the network
2743  *
2744  * This function frees all resources allocated for the network configuration
2745  * data.
2746  */
wpa_config_free_ssid(struct wpa_ssid * ssid)2747 void wpa_config_free_ssid(struct wpa_ssid *ssid)
2748 {
2749 	struct psk_list_entry *psk;
2750 
2751 	os_free(ssid->ssid);
2752 	str_clear_free(ssid->passphrase);
2753 	os_free(ssid->ext_psk);
2754 	str_clear_free(ssid->sae_password);
2755 	os_free(ssid->sae_password_id);
2756 #ifdef IEEE8021X_EAPOL
2757 	eap_peer_config_free(&ssid->eap);
2758 #endif /* IEEE8021X_EAPOL */
2759 	os_free(ssid->id_str);
2760 	os_free(ssid->scan_freq);
2761 	os_free(ssid->freq_list);
2762 	os_free(ssid->bgscan);
2763 	os_free(ssid->p2p_client_list);
2764 	os_free(ssid->bssid_blacklist);
2765 	os_free(ssid->bssid_whitelist);
2766 #ifdef CONFIG_HT_OVERRIDES
2767 	os_free(ssid->ht_mcs);
2768 #endif /* CONFIG_HT_OVERRIDES */
2769 #ifdef CONFIG_MESH
2770 	os_free(ssid->mesh_basic_rates);
2771 #endif /* CONFIG_MESH */
2772 #ifdef CONFIG_HS20
2773 	os_free(ssid->roaming_consortium_selection);
2774 #endif /* CONFIG_HS20 */
2775 	os_free(ssid->dpp_connector);
2776 	bin_clear_free(ssid->dpp_netaccesskey, ssid->dpp_netaccesskey_len);
2777 	os_free(ssid->dpp_csign);
2778 	while ((psk = dl_list_first(&ssid->psk_list, struct psk_list_entry,
2779 				    list))) {
2780 		dl_list_del(&psk->list);
2781 		bin_clear_free(psk, sizeof(*psk));
2782 	}
2783 #ifdef CONFIG_SAE
2784 	sae_deinit_pt(ssid->pt);
2785 #endif /* CONFIG_SAE */
2786 	bin_clear_free(ssid, sizeof(*ssid));
2787 }
2788 
2789 
wpa_config_free_cred(struct wpa_cred * cred)2790 void wpa_config_free_cred(struct wpa_cred *cred)
2791 {
2792 	size_t i;
2793 
2794 	os_free(cred->realm);
2795 	str_clear_free(cred->username);
2796 	str_clear_free(cred->password);
2797 	os_free(cred->ca_cert);
2798 	os_free(cred->client_cert);
2799 	os_free(cred->private_key);
2800 	str_clear_free(cred->private_key_passwd);
2801 	os_free(cred->imsi);
2802 	str_clear_free(cred->milenage);
2803 	for (i = 0; i < cred->num_domain; i++)
2804 		os_free(cred->domain[i]);
2805 	os_free(cred->domain);
2806 	os_free(cred->domain_suffix_match);
2807 	os_free(cred->eap_method);
2808 	os_free(cred->phase1);
2809 	os_free(cred->phase2);
2810 	os_free(cred->excluded_ssid);
2811 	os_free(cred->roaming_partner);
2812 	os_free(cred->provisioning_sp);
2813 	for (i = 0; i < cred->num_req_conn_capab; i++)
2814 		os_free(cred->req_conn_capab_port[i]);
2815 	os_free(cred->req_conn_capab_port);
2816 	os_free(cred->req_conn_capab_proto);
2817 	os_free(cred);
2818 }
2819 
2820 
wpa_config_flush_blobs(struct wpa_config * config)2821 void wpa_config_flush_blobs(struct wpa_config *config)
2822 {
2823 #ifndef CONFIG_NO_CONFIG_BLOBS
2824 	struct wpa_config_blob *blob, *prev;
2825 
2826 	blob = config->blobs;
2827 	config->blobs = NULL;
2828 	while (blob) {
2829 		prev = blob;
2830 		blob = blob->next;
2831 		wpa_config_free_blob(prev);
2832 	}
2833 #endif /* CONFIG_NO_CONFIG_BLOBS */
2834 }
2835 
2836 
2837 /**
2838  * wpa_config_free - Free configuration data
2839  * @config: Configuration data from wpa_config_read()
2840  *
2841  * This function frees all resources allocated for the configuration data by
2842  * wpa_config_read().
2843  */
wpa_config_free(struct wpa_config * config)2844 void wpa_config_free(struct wpa_config *config)
2845 {
2846 	struct wpa_ssid *ssid, *prev = NULL;
2847 	struct wpa_cred *cred, *cprev;
2848 	int i;
2849 
2850 	ssid = config->ssid;
2851 	while (ssid) {
2852 		prev = ssid;
2853 		ssid = ssid->next;
2854 		wpa_config_free_ssid(prev);
2855 	}
2856 
2857 	cred = config->cred;
2858 	while (cred) {
2859 		cprev = cred;
2860 		cred = cred->next;
2861 		wpa_config_free_cred(cprev);
2862 	}
2863 
2864 	wpa_config_flush_blobs(config);
2865 
2866 	wpabuf_free(config->wps_vendor_ext_m1);
2867 	for (i = 0; i < MAX_WPS_VENDOR_EXT; i++)
2868 		wpabuf_free(config->wps_vendor_ext[i]);
2869 	os_free(config->ctrl_interface);
2870 	os_free(config->ctrl_interface_group);
2871 	os_free(config->opensc_engine_path);
2872 	os_free(config->pkcs11_engine_path);
2873 	os_free(config->pkcs11_module_path);
2874 	os_free(config->openssl_ciphers);
2875 	os_free(config->pcsc_reader);
2876 	str_clear_free(config->pcsc_pin);
2877 	os_free(config->driver_param);
2878 	os_free(config->device_name);
2879 	os_free(config->manufacturer);
2880 	os_free(config->model_name);
2881 	os_free(config->model_number);
2882 	os_free(config->serial_number);
2883 	os_free(config->config_methods);
2884 	os_free(config->p2p_ssid_postfix);
2885 	os_free(config->pssid);
2886 	os_free(config->p2p_pref_chan);
2887 	os_free(config->p2p_no_go_freq.range);
2888 	os_free(config->autoscan);
2889 	os_free(config->freq_list);
2890 	wpabuf_free(config->wps_nfc_dh_pubkey);
2891 	wpabuf_free(config->wps_nfc_dh_privkey);
2892 	wpabuf_free(config->wps_nfc_dev_pw);
2893 	os_free(config->ext_password_backend);
2894 	os_free(config->sae_groups);
2895 	wpabuf_free(config->ap_vendor_elements);
2896 	os_free(config->osu_dir);
2897 	os_free(config->bgscan);
2898 	os_free(config->wowlan_triggers);
2899 	os_free(config->fst_group_id);
2900 	os_free(config->sched_scan_plans);
2901 #ifdef CONFIG_MBO
2902 	os_free(config->non_pref_chan);
2903 #endif /* CONFIG_MBO */
2904 	os_free(config->dpp_name);
2905 	os_free(config->dpp_mud_url);
2906 
2907 	os_free(config);
2908 }
2909 
2910 
2911 /**
2912  * wpa_config_foreach_network - Iterate over each configured network
2913  * @config: Configuration data from wpa_config_read()
2914  * @func: Callback function to process each network
2915  * @arg: Opaque argument to pass to callback function
2916  *
2917  * Iterate over the set of configured networks calling the specified
2918  * function for each item. We guard against callbacks removing the
2919  * supplied network.
2920  */
wpa_config_foreach_network(struct wpa_config * config,void (* func)(void *,struct wpa_ssid *),void * arg)2921 void wpa_config_foreach_network(struct wpa_config *config,
2922 				void (*func)(void *, struct wpa_ssid *),
2923 				void *arg)
2924 {
2925 	struct wpa_ssid *ssid, *next;
2926 
2927 	ssid = config->ssid;
2928 	while (ssid) {
2929 		next = ssid->next;
2930 		func(arg, ssid);
2931 		ssid = next;
2932 	}
2933 }
2934 
2935 
2936 /**
2937  * wpa_config_get_network - Get configured network based on id
2938  * @config: Configuration data from wpa_config_read()
2939  * @id: Unique network id to search for
2940  * Returns: Network configuration or %NULL if not found
2941  */
wpa_config_get_network(struct wpa_config * config,int id)2942 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
2943 {
2944 	struct wpa_ssid *ssid;
2945 
2946 	ssid = config->ssid;
2947 	while (ssid) {
2948 		if (id == ssid->id)
2949 			break;
2950 		ssid = ssid->next;
2951 	}
2952 
2953 	return ssid;
2954 }
2955 
2956 
2957 /**
2958  * wpa_config_add_network - Add a new network with empty configuration
2959  * @config: Configuration data from wpa_config_read()
2960  * Returns: The new network configuration or %NULL if operation failed
2961  */
wpa_config_add_network(struct wpa_config * config)2962 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
2963 {
2964 	int id;
2965 	struct wpa_ssid *ssid, *last = NULL;
2966 
2967 	id = -1;
2968 	ssid = config->ssid;
2969 	while (ssid) {
2970 		if (ssid->id > id)
2971 			id = ssid->id;
2972 		last = ssid;
2973 		ssid = ssid->next;
2974 	}
2975 	id++;
2976 
2977 	ssid = os_zalloc(sizeof(*ssid));
2978 	if (ssid == NULL)
2979 		return NULL;
2980 	ssid->id = id;
2981 	dl_list_init(&ssid->psk_list);
2982 	if (last)
2983 		last->next = ssid;
2984 	else
2985 		config->ssid = ssid;
2986 
2987 	wpa_config_update_prio_list(config);
2988 
2989 	return ssid;
2990 }
2991 
2992 
2993 /**
2994  * wpa_config_remove_network - Remove a configured network based on id
2995  * @config: Configuration data from wpa_config_read()
2996  * @id: Unique network id to search for
2997  * Returns: 0 on success, or -1 if the network was not found
2998  */
wpa_config_remove_network(struct wpa_config * config,int id)2999 int wpa_config_remove_network(struct wpa_config *config, int id)
3000 {
3001 	struct wpa_ssid *ssid, *prev = NULL;
3002 
3003 	ssid = config->ssid;
3004 	while (ssid) {
3005 		if (id == ssid->id)
3006 			break;
3007 		prev = ssid;
3008 		ssid = ssid->next;
3009 	}
3010 
3011 	if (ssid == NULL)
3012 		return -1;
3013 
3014 	if (prev)
3015 		prev->next = ssid->next;
3016 	else
3017 		config->ssid = ssid->next;
3018 
3019 	wpa_config_update_prio_list(config);
3020 	wpa_config_free_ssid(ssid);
3021 	return 0;
3022 }
3023 
3024 
3025 /**
3026  * wpa_config_set_network_defaults - Set network default values
3027  * @ssid: Pointer to network configuration data
3028  */
wpa_config_set_network_defaults(struct wpa_ssid * ssid)3029 void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
3030 {
3031 	ssid->proto = DEFAULT_PROTO;
3032 	ssid->pairwise_cipher = DEFAULT_PAIRWISE;
3033 	ssid->group_cipher = DEFAULT_GROUP;
3034 	ssid->key_mgmt = DEFAULT_KEY_MGMT;
3035 	ssid->wpa_deny_ptk0_rekey = PTK0_REKEY_ALLOW_ALWAYS;
3036 	ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
3037 	ssid->ht = 1;
3038 #ifdef IEEE8021X_EAPOL
3039 	ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
3040 	ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
3041 	ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
3042 	ssid->eap.sim_num = DEFAULT_USER_SELECTED_SIM;
3043 #endif /* IEEE8021X_EAPOL */
3044 #ifdef CONFIG_MESH
3045 	ssid->dot11MeshMaxRetries = DEFAULT_MESH_MAX_RETRIES;
3046 	ssid->dot11MeshRetryTimeout = DEFAULT_MESH_RETRY_TIMEOUT;
3047 	ssid->dot11MeshConfirmTimeout = DEFAULT_MESH_CONFIRM_TIMEOUT;
3048 	ssid->dot11MeshHoldingTimeout = DEFAULT_MESH_HOLDING_TIMEOUT;
3049 	ssid->mesh_rssi_threshold = DEFAULT_MESH_RSSI_THRESHOLD;
3050 #endif /* CONFIG_MESH */
3051 #ifdef CONFIG_HT_OVERRIDES
3052 	ssid->disable_ht = DEFAULT_DISABLE_HT;
3053 	ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
3054 	ssid->disable_sgi = DEFAULT_DISABLE_SGI;
3055 	ssid->disable_ldpc = DEFAULT_DISABLE_LDPC;
3056 	ssid->tx_stbc = DEFAULT_TX_STBC;
3057 	ssid->rx_stbc = DEFAULT_RX_STBC;
3058 	ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
3059 	ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
3060 	ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
3061 #endif /* CONFIG_HT_OVERRIDES */
3062 #ifdef CONFIG_VHT_OVERRIDES
3063 	ssid->vht_rx_mcs_nss_1 = -1;
3064 	ssid->vht_rx_mcs_nss_2 = -1;
3065 	ssid->vht_rx_mcs_nss_3 = -1;
3066 	ssid->vht_rx_mcs_nss_4 = -1;
3067 	ssid->vht_rx_mcs_nss_5 = -1;
3068 	ssid->vht_rx_mcs_nss_6 = -1;
3069 	ssid->vht_rx_mcs_nss_7 = -1;
3070 	ssid->vht_rx_mcs_nss_8 = -1;
3071 	ssid->vht_tx_mcs_nss_1 = -1;
3072 	ssid->vht_tx_mcs_nss_2 = -1;
3073 	ssid->vht_tx_mcs_nss_3 = -1;
3074 	ssid->vht_tx_mcs_nss_4 = -1;
3075 	ssid->vht_tx_mcs_nss_5 = -1;
3076 	ssid->vht_tx_mcs_nss_6 = -1;
3077 	ssid->vht_tx_mcs_nss_7 = -1;
3078 	ssid->vht_tx_mcs_nss_8 = -1;
3079 #endif /* CONFIG_VHT_OVERRIDES */
3080 	ssid->proactive_key_caching = -1;
3081 	ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
3082 #ifdef CONFIG_MACSEC
3083 	ssid->mka_priority = DEFAULT_PRIO_NOT_KEY_SERVER;
3084 #endif /* CONFIG_MACSEC */
3085 	ssid->mac_addr = -1;
3086 	ssid->max_oper_chwidth = DEFAULT_MAX_OPER_CHWIDTH;
3087 }
3088 
3089 
3090 /**
3091  * wpa_config_set - Set a variable in network configuration
3092  * @ssid: Pointer to network configuration data
3093  * @var: Variable name, e.g., "ssid"
3094  * @value: Variable value
3095  * @line: Line number in configuration file or 0 if not used
3096  * Returns: 0 on success with possible change in the value, 1 on success with
3097  * no change to previously configured value, or -1 on failure
3098  *
3099  * This function can be used to set network configuration variables based on
3100  * both the configuration file and management interface input. The value
3101  * parameter must be in the same format as the text-based configuration file is
3102  * using. For example, strings are using double quotation marks.
3103  */
wpa_config_set(struct wpa_ssid * ssid,const char * var,const char * value,int line)3104 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
3105 		   int line)
3106 {
3107 	size_t i;
3108 	int ret = 0;
3109 
3110 	if (ssid == NULL || var == NULL || value == NULL)
3111 		return -1;
3112 
3113 	for (i = 0; i < NUM_SSID_FIELDS; i++) {
3114 		const struct parse_data *field = &ssid_fields[i];
3115 		if (os_strcmp(var, field->name) != 0)
3116 			continue;
3117 
3118 		ret = field->parser(field, ssid, line, value);
3119 		if (ret < 0) {
3120 			if (line) {
3121 				wpa_printf(MSG_ERROR, "Line %d: failed to "
3122 					   "parse %s '%s'.", line, var, value);
3123 			}
3124 			ret = -1;
3125 		}
3126 #ifdef CONFIG_SAE
3127 		if (os_strcmp(var, "ssid") == 0 ||
3128 		    os_strcmp(var, "psk") == 0 ||
3129 		    os_strcmp(var, "sae_password") == 0 ||
3130 		    os_strcmp(var, "sae_password_id") == 0) {
3131 			sae_deinit_pt(ssid->pt);
3132 			ssid->pt = NULL;
3133 		}
3134 #endif /* CONFIG_SAE */
3135 		break;
3136 	}
3137 	if (i == NUM_SSID_FIELDS) {
3138 		if (line) {
3139 			wpa_printf(MSG_ERROR, "Line %d: unknown network field "
3140 				   "'%s'.", line, var);
3141 		}
3142 		ret = -1;
3143 	}
3144 
3145 	return ret;
3146 }
3147 
3148 
wpa_config_set_quoted(struct wpa_ssid * ssid,const char * var,const char * value)3149 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
3150 			  const char *value)
3151 {
3152 	size_t len;
3153 	char *buf;
3154 	int ret;
3155 
3156 	len = os_strlen(value);
3157 	buf = os_malloc(len + 3);
3158 	if (buf == NULL)
3159 		return -1;
3160 	buf[0] = '"';
3161 	os_memcpy(buf + 1, value, len);
3162 	buf[len + 1] = '"';
3163 	buf[len + 2] = '\0';
3164 	ret = wpa_config_set(ssid, var, buf, 0);
3165 	os_free(buf);
3166 	return ret;
3167 }
3168 
3169 
3170 /**
3171  * wpa_config_get_all - Get all options from network configuration
3172  * @ssid: Pointer to network configuration data
3173  * @get_keys: Determines if keys/passwords will be included in returned list
3174  *	(if they may be exported)
3175  * Returns: %NULL terminated list of all set keys and their values in the form
3176  * of [key1, val1, key2, val2, ... , NULL]
3177  *
3178  * This function can be used to get list of all configured network properties.
3179  * The caller is responsible for freeing the returned list and all its
3180  * elements.
3181  */
wpa_config_get_all(struct wpa_ssid * ssid,int get_keys)3182 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
3183 {
3184 #ifdef NO_CONFIG_WRITE
3185 	return NULL;
3186 #else /* NO_CONFIG_WRITE */
3187 	const struct parse_data *field;
3188 	char *key, *value;
3189 	size_t i;
3190 	char **props;
3191 	int fields_num;
3192 
3193 	get_keys = get_keys && ssid->export_keys;
3194 
3195 	props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
3196 	if (!props)
3197 		return NULL;
3198 
3199 	fields_num = 0;
3200 	for (i = 0; i < NUM_SSID_FIELDS; i++) {
3201 		field = &ssid_fields[i];
3202 		if (field->key_data && !get_keys)
3203 			continue;
3204 		value = field->writer(field, ssid);
3205 		if (value == NULL)
3206 			continue;
3207 		if (os_strlen(value) == 0) {
3208 			os_free(value);
3209 			continue;
3210 		}
3211 
3212 		key = os_strdup(field->name);
3213 		if (key == NULL) {
3214 			os_free(value);
3215 			goto err;
3216 		}
3217 
3218 		props[fields_num * 2] = key;
3219 		props[fields_num * 2 + 1] = value;
3220 
3221 		fields_num++;
3222 	}
3223 
3224 	return props;
3225 
3226 err:
3227 	for (i = 0; props[i]; i++)
3228 		os_free(props[i]);
3229 	os_free(props);
3230 	return NULL;
3231 #endif /* NO_CONFIG_WRITE */
3232 }
3233 
3234 
3235 #ifndef NO_CONFIG_WRITE
3236 /**
3237  * wpa_config_get - Get a variable in network configuration
3238  * @ssid: Pointer to network configuration data
3239  * @var: Variable name, e.g., "ssid"
3240  * Returns: Value of the variable or %NULL on failure
3241  *
3242  * This function can be used to get network configuration variables. The
3243  * returned value is a copy of the configuration variable in text format, i.e,.
3244  * the same format that the text-based configuration file and wpa_config_set()
3245  * are using for the value. The caller is responsible for freeing the returned
3246  * value.
3247  */
wpa_config_get(struct wpa_ssid * ssid,const char * var)3248 char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
3249 {
3250 	size_t i;
3251 
3252 	if (ssid == NULL || var == NULL)
3253 		return NULL;
3254 
3255 	for (i = 0; i < NUM_SSID_FIELDS; i++) {
3256 		const struct parse_data *field = &ssid_fields[i];
3257 		if (os_strcmp(var, field->name) == 0) {
3258 			char *ret = field->writer(field, ssid);
3259 
3260 			if (ret && has_newline(ret)) {
3261 				wpa_printf(MSG_ERROR,
3262 					   "Found newline in value for %s; not returning it",
3263 					   var);
3264 				os_free(ret);
3265 				ret = NULL;
3266 			}
3267 
3268 			return ret;
3269 		}
3270 	}
3271 
3272 	return NULL;
3273 }
3274 
3275 
3276 /**
3277  * wpa_config_get_no_key - Get a variable in network configuration (no keys)
3278  * @ssid: Pointer to network configuration data
3279  * @var: Variable name, e.g., "ssid"
3280  * Returns: Value of the variable or %NULL on failure
3281  *
3282  * This function can be used to get network configuration variable like
3283  * wpa_config_get(). The only difference is that this functions does not expose
3284  * key/password material from the configuration. In case a key/password field
3285  * is requested, the returned value is an empty string or %NULL if the variable
3286  * is not set or "*" if the variable is set (regardless of its value). The
3287  * returned value is a copy of the configuration variable in text format, i.e,.
3288  * the same format that the text-based configuration file and wpa_config_set()
3289  * are using for the value. The caller is responsible for freeing the returned
3290  * value.
3291  */
wpa_config_get_no_key(struct wpa_ssid * ssid,const char * var)3292 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
3293 {
3294 	size_t i;
3295 
3296 	if (ssid == NULL || var == NULL)
3297 		return NULL;
3298 
3299 	for (i = 0; i < NUM_SSID_FIELDS; i++) {
3300 		const struct parse_data *field = &ssid_fields[i];
3301 		if (os_strcmp(var, field->name) == 0) {
3302 			char *res = field->writer(field, ssid);
3303 			if (field->key_data) {
3304 				if (res && res[0]) {
3305 					wpa_printf(MSG_DEBUG, "Do not allow "
3306 						   "key_data field to be "
3307 						   "exposed");
3308 					str_clear_free(res);
3309 					return os_strdup("*");
3310 				}
3311 
3312 				os_free(res);
3313 				return NULL;
3314 			}
3315 			return res;
3316 		}
3317 	}
3318 
3319 	return NULL;
3320 }
3321 #endif /* NO_CONFIG_WRITE */
3322 
3323 
3324 /**
3325  * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
3326  * @ssid: Pointer to network configuration data
3327  *
3328  * This function must be called to update WPA PSK when either SSID or the
3329  * passphrase has changed for the network configuration.
3330  */
wpa_config_update_psk(struct wpa_ssid * ssid)3331 void wpa_config_update_psk(struct wpa_ssid *ssid)
3332 {
3333 #ifndef CONFIG_NO_PBKDF2
3334 	pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
3335 		    ssid->psk, PMK_LEN);
3336 	wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
3337 			ssid->psk, PMK_LEN);
3338 	ssid->psk_set = 1;
3339 #endif /* CONFIG_NO_PBKDF2 */
3340 }
3341 
3342 
wpa_config_set_cred_req_conn_capab(struct wpa_cred * cred,const char * value)3343 static int wpa_config_set_cred_req_conn_capab(struct wpa_cred *cred,
3344 					      const char *value)
3345 {
3346 	u8 *proto;
3347 	int **port;
3348 	int *ports, *nports;
3349 	const char *pos;
3350 	unsigned int num_ports;
3351 
3352 	proto = os_realloc_array(cred->req_conn_capab_proto,
3353 				 cred->num_req_conn_capab + 1, sizeof(u8));
3354 	if (proto == NULL)
3355 		return -1;
3356 	cred->req_conn_capab_proto = proto;
3357 
3358 	port = os_realloc_array(cred->req_conn_capab_port,
3359 				cred->num_req_conn_capab + 1, sizeof(int *));
3360 	if (port == NULL)
3361 		return -1;
3362 	cred->req_conn_capab_port = port;
3363 
3364 	proto[cred->num_req_conn_capab] = atoi(value);
3365 
3366 	pos = os_strchr(value, ':');
3367 	if (pos == NULL) {
3368 		port[cred->num_req_conn_capab] = NULL;
3369 		cred->num_req_conn_capab++;
3370 		return 0;
3371 	}
3372 	pos++;
3373 
3374 	ports = NULL;
3375 	num_ports = 0;
3376 
3377 	while (*pos) {
3378 		nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
3379 		if (nports == NULL) {
3380 			os_free(ports);
3381 			return -1;
3382 		}
3383 		ports = nports;
3384 		ports[num_ports++] = atoi(pos);
3385 
3386 		pos = os_strchr(pos, ',');
3387 		if (pos == NULL)
3388 			break;
3389 		pos++;
3390 	}
3391 
3392 	nports = os_realloc_array(ports, num_ports + 1, sizeof(int));
3393 	if (nports == NULL) {
3394 		os_free(ports);
3395 		return -1;
3396 	}
3397 	ports = nports;
3398 	ports[num_ports] = -1;
3399 
3400 	port[cred->num_req_conn_capab] = ports;
3401 	cred->num_req_conn_capab++;
3402 	return 0;
3403 }
3404 
3405 
wpa_config_set_cred_roaming_consortiums(struct wpa_cred * cred,const char * value)3406 static int wpa_config_set_cred_roaming_consortiums(struct wpa_cred *cred,
3407 						   const char *value)
3408 {
3409 	u8 roaming_consortiums[MAX_ROAMING_CONS][MAX_ROAMING_CONS_OI_LEN];
3410 	size_t roaming_consortiums_len[MAX_ROAMING_CONS];
3411 	unsigned int num_roaming_consortiums = 0;
3412 	const char *pos, *end;
3413 	size_t len;
3414 
3415 	os_memset(roaming_consortiums, 0, sizeof(roaming_consortiums));
3416 	os_memset(roaming_consortiums_len, 0, sizeof(roaming_consortiums_len));
3417 
3418 	for (pos = value;;) {
3419 		end = os_strchr(pos, ',');
3420 		len = end ? (size_t) (end - pos) : os_strlen(pos);
3421 		if (!end && len == 0)
3422 			break;
3423 		if (len == 0 || (len & 1) != 0 ||
3424 		    len / 2 > MAX_ROAMING_CONS_OI_LEN ||
3425 		    hexstr2bin(pos,
3426 			       roaming_consortiums[num_roaming_consortiums],
3427 			       len / 2) < 0) {
3428 			wpa_printf(MSG_INFO,
3429 				   "Invalid roaming_consortiums entry: %s",
3430 				   pos);
3431 			return -1;
3432 		}
3433 		roaming_consortiums_len[num_roaming_consortiums] = len / 2;
3434 		num_roaming_consortiums++;
3435 
3436 		if (!end)
3437 			break;
3438 
3439 		if (num_roaming_consortiums >= MAX_ROAMING_CONS) {
3440 			wpa_printf(MSG_INFO,
3441 				   "Too many roaming_consortiums OIs");
3442 			return -1;
3443 		}
3444 
3445 		pos = end + 1;
3446 	}
3447 
3448 	os_memcpy(cred->roaming_consortiums, roaming_consortiums,
3449 		  sizeof(roaming_consortiums));
3450 	os_memcpy(cred->roaming_consortiums_len, roaming_consortiums_len,
3451 		  sizeof(roaming_consortiums_len));
3452 	cred->num_roaming_consortiums = num_roaming_consortiums;
3453 
3454 	return 0;
3455 }
3456 
3457 
wpa_config_set_cred(struct wpa_cred * cred,const char * var,const char * value,int line)3458 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
3459 			const char *value, int line)
3460 {
3461 	char *val;
3462 	size_t len;
3463 	int res;
3464 
3465 	if (os_strcmp(var, "temporary") == 0) {
3466 		cred->temporary = atoi(value);
3467 		return 0;
3468 	}
3469 
3470 	if (os_strcmp(var, "priority") == 0) {
3471 		cred->priority = atoi(value);
3472 		return 0;
3473 	}
3474 
3475 	if (os_strcmp(var, "sp_priority") == 0) {
3476 		int prio = atoi(value);
3477 		if (prio < 0 || prio > 255)
3478 			return -1;
3479 		cred->sp_priority = prio;
3480 		return 0;
3481 	}
3482 
3483 	if (os_strcmp(var, "pcsc") == 0) {
3484 		cred->pcsc = atoi(value);
3485 		return 0;
3486 	}
3487 
3488 	if (os_strcmp(var, "eap") == 0) {
3489 		struct eap_method_type method;
3490 		method.method = eap_peer_get_type(value, &method.vendor);
3491 		if (method.vendor == EAP_VENDOR_IETF &&
3492 		    method.method == EAP_TYPE_NONE) {
3493 			wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
3494 				   "for a credential", line, value);
3495 			return -1;
3496 		}
3497 		os_free(cred->eap_method);
3498 		cred->eap_method = os_malloc(sizeof(*cred->eap_method));
3499 		if (cred->eap_method == NULL)
3500 			return -1;
3501 		os_memcpy(cred->eap_method, &method, sizeof(method));
3502 		return 0;
3503 	}
3504 
3505 	if (os_strcmp(var, "password") == 0 &&
3506 	    os_strncmp(value, "ext:", 4) == 0) {
3507 		if (has_newline(value))
3508 			return -1;
3509 		str_clear_free(cred->password);
3510 		cred->password = os_strdup(value);
3511 		cred->ext_password = 1;
3512 		return 0;
3513 	}
3514 
3515 	if (os_strcmp(var, "update_identifier") == 0) {
3516 		cred->update_identifier = atoi(value);
3517 		return 0;
3518 	}
3519 
3520 	if (os_strcmp(var, "min_dl_bandwidth_home") == 0) {
3521 		cred->min_dl_bandwidth_home = atoi(value);
3522 		return 0;
3523 	}
3524 
3525 	if (os_strcmp(var, "min_ul_bandwidth_home") == 0) {
3526 		cred->min_ul_bandwidth_home = atoi(value);
3527 		return 0;
3528 	}
3529 
3530 	if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0) {
3531 		cred->min_dl_bandwidth_roaming = atoi(value);
3532 		return 0;
3533 	}
3534 
3535 	if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0) {
3536 		cred->min_ul_bandwidth_roaming = atoi(value);
3537 		return 0;
3538 	}
3539 
3540 	if (os_strcmp(var, "max_bss_load") == 0) {
3541 		cred->max_bss_load = atoi(value);
3542 		return 0;
3543 	}
3544 
3545 	if (os_strcmp(var, "req_conn_capab") == 0)
3546 		return wpa_config_set_cred_req_conn_capab(cred, value);
3547 
3548 	if (os_strcmp(var, "ocsp") == 0) {
3549 		cred->ocsp = atoi(value);
3550 		return 0;
3551 	}
3552 
3553 	if (os_strcmp(var, "sim_num") == 0) {
3554 		cred->sim_num = atoi(value);
3555 		return 0;
3556 	}
3557 
3558 	val = wpa_config_parse_string(value, &len);
3559 	if (val == NULL ||
3560 	    (os_strcmp(var, "excluded_ssid") != 0 &&
3561 	     os_strcmp(var, "roaming_consortium") != 0 &&
3562 	     os_strcmp(var, "required_roaming_consortium") != 0 &&
3563 	     has_newline(val))) {
3564 		wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
3565 			   "value '%s'.", line, var, value);
3566 		os_free(val);
3567 		return -1;
3568 	}
3569 
3570 	if (os_strcmp(var, "realm") == 0) {
3571 		os_free(cred->realm);
3572 		cred->realm = val;
3573 		return 0;
3574 	}
3575 
3576 	if (os_strcmp(var, "username") == 0) {
3577 		str_clear_free(cred->username);
3578 		cred->username = val;
3579 		return 0;
3580 	}
3581 
3582 	if (os_strcmp(var, "password") == 0) {
3583 		str_clear_free(cred->password);
3584 		cred->password = val;
3585 		cred->ext_password = 0;
3586 		return 0;
3587 	}
3588 
3589 	if (os_strcmp(var, "ca_cert") == 0) {
3590 		os_free(cred->ca_cert);
3591 		cred->ca_cert = val;
3592 		return 0;
3593 	}
3594 
3595 	if (os_strcmp(var, "client_cert") == 0) {
3596 		os_free(cred->client_cert);
3597 		cred->client_cert = val;
3598 		return 0;
3599 	}
3600 
3601 	if (os_strcmp(var, "private_key") == 0) {
3602 		os_free(cred->private_key);
3603 		cred->private_key = val;
3604 		return 0;
3605 	}
3606 
3607 	if (os_strcmp(var, "private_key_passwd") == 0) {
3608 		str_clear_free(cred->private_key_passwd);
3609 		cred->private_key_passwd = val;
3610 		return 0;
3611 	}
3612 
3613 	if (os_strcmp(var, "imsi") == 0) {
3614 		os_free(cred->imsi);
3615 		cred->imsi = val;
3616 		return 0;
3617 	}
3618 
3619 	if (os_strcmp(var, "milenage") == 0) {
3620 		str_clear_free(cred->milenage);
3621 		cred->milenage = val;
3622 		return 0;
3623 	}
3624 
3625 	if (os_strcmp(var, "domain_suffix_match") == 0) {
3626 		os_free(cred->domain_suffix_match);
3627 		cred->domain_suffix_match = val;
3628 		return 0;
3629 	}
3630 
3631 	if (os_strcmp(var, "domain") == 0) {
3632 		char **new_domain;
3633 		new_domain = os_realloc_array(cred->domain,
3634 					      cred->num_domain + 1,
3635 					      sizeof(char *));
3636 		if (new_domain == NULL) {
3637 			os_free(val);
3638 			return -1;
3639 		}
3640 		new_domain[cred->num_domain++] = val;
3641 		cred->domain = new_domain;
3642 		return 0;
3643 	}
3644 
3645 	if (os_strcmp(var, "phase1") == 0) {
3646 		os_free(cred->phase1);
3647 		cred->phase1 = val;
3648 		return 0;
3649 	}
3650 
3651 	if (os_strcmp(var, "phase2") == 0) {
3652 		os_free(cred->phase2);
3653 		cred->phase2 = val;
3654 		return 0;
3655 	}
3656 
3657 	if (os_strcmp(var, "roaming_consortium") == 0) {
3658 		if (len < 3 || len > sizeof(cred->roaming_consortium)) {
3659 			wpa_printf(MSG_ERROR, "Line %d: invalid "
3660 				   "roaming_consortium length %d (3..15 "
3661 				   "expected)", line, (int) len);
3662 			os_free(val);
3663 			return -1;
3664 		}
3665 		os_memcpy(cred->roaming_consortium, val, len);
3666 		cred->roaming_consortium_len = len;
3667 		os_free(val);
3668 		return 0;
3669 	}
3670 
3671 	if (os_strcmp(var, "required_roaming_consortium") == 0) {
3672 		if (len < 3 || len > sizeof(cred->required_roaming_consortium))
3673 		{
3674 			wpa_printf(MSG_ERROR, "Line %d: invalid "
3675 				   "required_roaming_consortium length %d "
3676 				   "(3..15 expected)", line, (int) len);
3677 			os_free(val);
3678 			return -1;
3679 		}
3680 		os_memcpy(cred->required_roaming_consortium, val, len);
3681 		cred->required_roaming_consortium_len = len;
3682 		os_free(val);
3683 		return 0;
3684 	}
3685 
3686 	if (os_strcmp(var, "roaming_consortiums") == 0) {
3687 		res = wpa_config_set_cred_roaming_consortiums(cred, val);
3688 		if (res < 0)
3689 			wpa_printf(MSG_ERROR,
3690 				   "Line %d: invalid roaming_consortiums",
3691 				   line);
3692 		os_free(val);
3693 		return res;
3694 	}
3695 
3696 	if (os_strcmp(var, "excluded_ssid") == 0) {
3697 		struct excluded_ssid *e;
3698 
3699 		if (len > SSID_MAX_LEN) {
3700 			wpa_printf(MSG_ERROR, "Line %d: invalid "
3701 				   "excluded_ssid length %d", line, (int) len);
3702 			os_free(val);
3703 			return -1;
3704 		}
3705 
3706 		e = os_realloc_array(cred->excluded_ssid,
3707 				     cred->num_excluded_ssid + 1,
3708 				     sizeof(struct excluded_ssid));
3709 		if (e == NULL) {
3710 			os_free(val);
3711 			return -1;
3712 		}
3713 		cred->excluded_ssid = e;
3714 
3715 		e = &cred->excluded_ssid[cred->num_excluded_ssid++];
3716 		os_memcpy(e->ssid, val, len);
3717 		e->ssid_len = len;
3718 
3719 		os_free(val);
3720 
3721 		return 0;
3722 	}
3723 
3724 	if (os_strcmp(var, "roaming_partner") == 0) {
3725 		struct roaming_partner *p;
3726 		char *pos;
3727 
3728 		p = os_realloc_array(cred->roaming_partner,
3729 				     cred->num_roaming_partner + 1,
3730 				     sizeof(struct roaming_partner));
3731 		if (p == NULL) {
3732 			os_free(val);
3733 			return -1;
3734 		}
3735 		cred->roaming_partner = p;
3736 
3737 		p = &cred->roaming_partner[cred->num_roaming_partner];
3738 
3739 		pos = os_strchr(val, ',');
3740 		if (pos == NULL) {
3741 			os_free(val);
3742 			return -1;
3743 		}
3744 		*pos++ = '\0';
3745 		if (pos - val - 1 >= (int) sizeof(p->fqdn)) {
3746 			os_free(val);
3747 			return -1;
3748 		}
3749 		os_memcpy(p->fqdn, val, pos - val);
3750 
3751 		p->exact_match = atoi(pos);
3752 
3753 		pos = os_strchr(pos, ',');
3754 		if (pos == NULL) {
3755 			os_free(val);
3756 			return -1;
3757 		}
3758 		*pos++ = '\0';
3759 
3760 		p->priority = atoi(pos);
3761 
3762 		pos = os_strchr(pos, ',');
3763 		if (pos == NULL) {
3764 			os_free(val);
3765 			return -1;
3766 		}
3767 		*pos++ = '\0';
3768 
3769 		if (os_strlen(pos) >= sizeof(p->country)) {
3770 			os_free(val);
3771 			return -1;
3772 		}
3773 		os_memcpy(p->country, pos, os_strlen(pos) + 1);
3774 
3775 		cred->num_roaming_partner++;
3776 		os_free(val);
3777 
3778 		return 0;
3779 	}
3780 
3781 	if (os_strcmp(var, "provisioning_sp") == 0) {
3782 		os_free(cred->provisioning_sp);
3783 		cred->provisioning_sp = val;
3784 		return 0;
3785 	}
3786 
3787 	if (line) {
3788 		wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
3789 			   line, var);
3790 	}
3791 
3792 	os_free(val);
3793 
3794 	return -1;
3795 }
3796 
3797 
alloc_int_str(int val)3798 static char * alloc_int_str(int val)
3799 {
3800 	const unsigned int bufsize = 20;
3801 	char *buf;
3802 	int res;
3803 
3804 	buf = os_malloc(bufsize);
3805 	if (buf == NULL)
3806 		return NULL;
3807 	res = os_snprintf(buf, bufsize, "%d", val);
3808 	if (os_snprintf_error(bufsize, res)) {
3809 		os_free(buf);
3810 		buf = NULL;
3811 	}
3812 	return buf;
3813 }
3814 
3815 
alloc_strdup(const char * str)3816 static char * alloc_strdup(const char *str)
3817 {
3818 	if (str == NULL)
3819 		return NULL;
3820 	return os_strdup(str);
3821 }
3822 
3823 
wpa_config_get_cred_no_key(struct wpa_cred * cred,const char * var)3824 char * wpa_config_get_cred_no_key(struct wpa_cred *cred, const char *var)
3825 {
3826 	if (os_strcmp(var, "temporary") == 0)
3827 		return alloc_int_str(cred->temporary);
3828 
3829 	if (os_strcmp(var, "priority") == 0)
3830 		return alloc_int_str(cred->priority);
3831 
3832 	if (os_strcmp(var, "sp_priority") == 0)
3833 		return alloc_int_str(cred->sp_priority);
3834 
3835 	if (os_strcmp(var, "pcsc") == 0)
3836 		return alloc_int_str(cred->pcsc);
3837 
3838 	if (os_strcmp(var, "eap") == 0) {
3839 		if (!cred->eap_method)
3840 			return NULL;
3841 		return alloc_strdup(eap_get_name(cred->eap_method[0].vendor,
3842 						 cred->eap_method[0].method));
3843 	}
3844 
3845 	if (os_strcmp(var, "update_identifier") == 0)
3846 		return alloc_int_str(cred->update_identifier);
3847 
3848 	if (os_strcmp(var, "min_dl_bandwidth_home") == 0)
3849 		return alloc_int_str(cred->min_dl_bandwidth_home);
3850 
3851 	if (os_strcmp(var, "min_ul_bandwidth_home") == 0)
3852 		return alloc_int_str(cred->min_ul_bandwidth_home);
3853 
3854 	if (os_strcmp(var, "min_dl_bandwidth_roaming") == 0)
3855 		return alloc_int_str(cred->min_dl_bandwidth_roaming);
3856 
3857 	if (os_strcmp(var, "min_ul_bandwidth_roaming") == 0)
3858 		return alloc_int_str(cred->min_ul_bandwidth_roaming);
3859 
3860 	if (os_strcmp(var, "max_bss_load") == 0)
3861 		return alloc_int_str(cred->max_bss_load);
3862 
3863 	if (os_strcmp(var, "req_conn_capab") == 0) {
3864 		unsigned int i;
3865 		char *buf, *end, *pos;
3866 		int ret;
3867 
3868 		if (!cred->num_req_conn_capab)
3869 			return NULL;
3870 
3871 		buf = os_malloc(4000);
3872 		if (buf == NULL)
3873 			return NULL;
3874 		pos = buf;
3875 		end = pos + 4000;
3876 		for (i = 0; i < cred->num_req_conn_capab; i++) {
3877 			int *ports;
3878 
3879 			ret = os_snprintf(pos, end - pos, "%s%u",
3880 					  i > 0 ? "\n" : "",
3881 					  cred->req_conn_capab_proto[i]);
3882 			if (os_snprintf_error(end - pos, ret))
3883 				return buf;
3884 			pos += ret;
3885 
3886 			ports = cred->req_conn_capab_port[i];
3887 			if (ports) {
3888 				int j;
3889 				for (j = 0; ports[j] != -1; j++) {
3890 					ret = os_snprintf(pos, end - pos,
3891 							  "%s%d",
3892 							  j > 0 ? "," : ":",
3893 							  ports[j]);
3894 					if (os_snprintf_error(end - pos, ret))
3895 						return buf;
3896 					pos += ret;
3897 				}
3898 			}
3899 		}
3900 
3901 		return buf;
3902 	}
3903 
3904 	if (os_strcmp(var, "ocsp") == 0)
3905 		return alloc_int_str(cred->ocsp);
3906 
3907 	if (os_strcmp(var, "realm") == 0)
3908 		return alloc_strdup(cred->realm);
3909 
3910 	if (os_strcmp(var, "username") == 0)
3911 		return alloc_strdup(cred->username);
3912 
3913 	if (os_strcmp(var, "password") == 0) {
3914 		if (!cred->password)
3915 			return NULL;
3916 		return alloc_strdup("*");
3917 	}
3918 
3919 	if (os_strcmp(var, "ca_cert") == 0)
3920 		return alloc_strdup(cred->ca_cert);
3921 
3922 	if (os_strcmp(var, "client_cert") == 0)
3923 		return alloc_strdup(cred->client_cert);
3924 
3925 	if (os_strcmp(var, "private_key") == 0)
3926 		return alloc_strdup(cred->private_key);
3927 
3928 	if (os_strcmp(var, "private_key_passwd") == 0) {
3929 		if (!cred->private_key_passwd)
3930 			return NULL;
3931 		return alloc_strdup("*");
3932 	}
3933 
3934 	if (os_strcmp(var, "imsi") == 0)
3935 		return alloc_strdup(cred->imsi);
3936 
3937 	if (os_strcmp(var, "milenage") == 0) {
3938 		if (!(cred->milenage))
3939 			return NULL;
3940 		return alloc_strdup("*");
3941 	}
3942 
3943 	if (os_strcmp(var, "domain_suffix_match") == 0)
3944 		return alloc_strdup(cred->domain_suffix_match);
3945 
3946 	if (os_strcmp(var, "domain") == 0) {
3947 		unsigned int i;
3948 		char *buf, *end, *pos;
3949 		int ret;
3950 
3951 		if (!cred->num_domain)
3952 			return NULL;
3953 
3954 		buf = os_malloc(4000);
3955 		if (buf == NULL)
3956 			return NULL;
3957 		pos = buf;
3958 		end = pos + 4000;
3959 
3960 		for (i = 0; i < cred->num_domain; i++) {
3961 			ret = os_snprintf(pos, end - pos, "%s%s",
3962 					  i > 0 ? "\n" : "", cred->domain[i]);
3963 			if (os_snprintf_error(end - pos, ret))
3964 				return buf;
3965 			pos += ret;
3966 		}
3967 
3968 		return buf;
3969 	}
3970 
3971 	if (os_strcmp(var, "phase1") == 0)
3972 		return alloc_strdup(cred->phase1);
3973 
3974 	if (os_strcmp(var, "phase2") == 0)
3975 		return alloc_strdup(cred->phase2);
3976 
3977 	if (os_strcmp(var, "roaming_consortium") == 0) {
3978 		size_t buflen;
3979 		char *buf;
3980 
3981 		if (!cred->roaming_consortium_len)
3982 			return NULL;
3983 		buflen = cred->roaming_consortium_len * 2 + 1;
3984 		buf = os_malloc(buflen);
3985 		if (buf == NULL)
3986 			return NULL;
3987 		wpa_snprintf_hex(buf, buflen, cred->roaming_consortium,
3988 				 cred->roaming_consortium_len);
3989 		return buf;
3990 	}
3991 
3992 	if (os_strcmp(var, "required_roaming_consortium") == 0) {
3993 		size_t buflen;
3994 		char *buf;
3995 
3996 		if (!cred->required_roaming_consortium_len)
3997 			return NULL;
3998 		buflen = cred->required_roaming_consortium_len * 2 + 1;
3999 		buf = os_malloc(buflen);
4000 		if (buf == NULL)
4001 			return NULL;
4002 		wpa_snprintf_hex(buf, buflen, cred->required_roaming_consortium,
4003 				 cred->required_roaming_consortium_len);
4004 		return buf;
4005 	}
4006 
4007 	if (os_strcmp(var, "roaming_consortiums") == 0) {
4008 		size_t buflen;
4009 		char *buf, *pos;
4010 		size_t i;
4011 
4012 		if (!cred->num_roaming_consortiums)
4013 			return NULL;
4014 		buflen = cred->num_roaming_consortiums *
4015 			MAX_ROAMING_CONS_OI_LEN * 2 + 1;
4016 		buf = os_malloc(buflen);
4017 		if (!buf)
4018 			return NULL;
4019 		pos = buf;
4020 		for (i = 0; i < cred->num_roaming_consortiums; i++) {
4021 			if (i > 0)
4022 				*pos++ = ',';
4023 			pos += wpa_snprintf_hex(
4024 				pos, buf + buflen - pos,
4025 				cred->roaming_consortiums[i],
4026 				cred->roaming_consortiums_len[i]);
4027 		}
4028 		*pos = '\0';
4029 		return buf;
4030 	}
4031 
4032 	if (os_strcmp(var, "excluded_ssid") == 0) {
4033 		unsigned int i;
4034 		char *buf, *end, *pos;
4035 
4036 		if (!cred->num_excluded_ssid)
4037 			return NULL;
4038 
4039 		buf = os_malloc(4000);
4040 		if (buf == NULL)
4041 			return NULL;
4042 		pos = buf;
4043 		end = pos + 4000;
4044 
4045 		for (i = 0; i < cred->num_excluded_ssid; i++) {
4046 			struct excluded_ssid *e;
4047 			int ret;
4048 
4049 			e = &cred->excluded_ssid[i];
4050 			ret = os_snprintf(pos, end - pos, "%s%s",
4051 					  i > 0 ? "\n" : "",
4052 					  wpa_ssid_txt(e->ssid, e->ssid_len));
4053 			if (os_snprintf_error(end - pos, ret))
4054 				return buf;
4055 			pos += ret;
4056 		}
4057 
4058 		return buf;
4059 	}
4060 
4061 	if (os_strcmp(var, "roaming_partner") == 0) {
4062 		unsigned int i;
4063 		char *buf, *end, *pos;
4064 
4065 		if (!cred->num_roaming_partner)
4066 			return NULL;
4067 
4068 		buf = os_malloc(4000);
4069 		if (buf == NULL)
4070 			return NULL;
4071 		pos = buf;
4072 		end = pos + 4000;
4073 
4074 		for (i = 0; i < cred->num_roaming_partner; i++) {
4075 			struct roaming_partner *p;
4076 			int ret;
4077 
4078 			p = &cred->roaming_partner[i];
4079 			ret = os_snprintf(pos, end - pos, "%s%s,%d,%u,%s",
4080 					  i > 0 ? "\n" : "",
4081 					  p->fqdn, p->exact_match, p->priority,
4082 					  p->country);
4083 			if (os_snprintf_error(end - pos, ret))
4084 				return buf;
4085 			pos += ret;
4086 		}
4087 
4088 		return buf;
4089 	}
4090 
4091 	if (os_strcmp(var, "provisioning_sp") == 0)
4092 		return alloc_strdup(cred->provisioning_sp);
4093 
4094 	return NULL;
4095 }
4096 
4097 
wpa_config_get_cred(struct wpa_config * config,int id)4098 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
4099 {
4100 	struct wpa_cred *cred;
4101 
4102 	cred = config->cred;
4103 	while (cred) {
4104 		if (id == cred->id)
4105 			break;
4106 		cred = cred->next;
4107 	}
4108 
4109 	return cred;
4110 }
4111 
4112 
wpa_config_add_cred(struct wpa_config * config)4113 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
4114 {
4115 	int id;
4116 	struct wpa_cred *cred, *last = NULL;
4117 
4118 	id = -1;
4119 	cred = config->cred;
4120 	while (cred) {
4121 		if (cred->id > id)
4122 			id = cred->id;
4123 		last = cred;
4124 		cred = cred->next;
4125 	}
4126 	id++;
4127 
4128 	cred = os_zalloc(sizeof(*cred));
4129 	if (cred == NULL)
4130 		return NULL;
4131 	cred->id = id;
4132 	cred->sim_num = DEFAULT_USER_SELECTED_SIM;
4133 	if (last)
4134 		last->next = cred;
4135 	else
4136 		config->cred = cred;
4137 
4138 	return cred;
4139 }
4140 
4141 
wpa_config_remove_cred(struct wpa_config * config,int id)4142 int wpa_config_remove_cred(struct wpa_config *config, int id)
4143 {
4144 	struct wpa_cred *cred, *prev = NULL;
4145 
4146 	cred = config->cred;
4147 	while (cred) {
4148 		if (id == cred->id)
4149 			break;
4150 		prev = cred;
4151 		cred = cred->next;
4152 	}
4153 
4154 	if (cred == NULL)
4155 		return -1;
4156 
4157 	if (prev)
4158 		prev->next = cred->next;
4159 	else
4160 		config->cred = cred->next;
4161 
4162 	wpa_config_free_cred(cred);
4163 	return 0;
4164 }
4165 
4166 
4167 #ifndef CONFIG_NO_CONFIG_BLOBS
4168 /**
4169  * wpa_config_get_blob - Get a named configuration blob
4170  * @config: Configuration data from wpa_config_read()
4171  * @name: Name of the blob
4172  * Returns: Pointer to blob data or %NULL if not found
4173  */
wpa_config_get_blob(struct wpa_config * config,const char * name)4174 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
4175 						   const char *name)
4176 {
4177 	struct wpa_config_blob *blob = config->blobs;
4178 
4179 	while (blob) {
4180 		if (os_strcmp(blob->name, name) == 0)
4181 			return blob;
4182 		blob = blob->next;
4183 	}
4184 	return NULL;
4185 }
4186 
4187 
4188 /**
4189  * wpa_config_set_blob - Set or add a named configuration blob
4190  * @config: Configuration data from wpa_config_read()
4191  * @blob: New value for the blob
4192  *
4193  * Adds a new configuration blob or replaces the current value of an existing
4194  * blob.
4195  */
wpa_config_set_blob(struct wpa_config * config,struct wpa_config_blob * blob)4196 void wpa_config_set_blob(struct wpa_config *config,
4197 			 struct wpa_config_blob *blob)
4198 {
4199 	wpa_config_remove_blob(config, blob->name);
4200 	blob->next = config->blobs;
4201 	config->blobs = blob;
4202 }
4203 
4204 
4205 /**
4206  * wpa_config_free_blob - Free blob data
4207  * @blob: Pointer to blob to be freed
4208  */
wpa_config_free_blob(struct wpa_config_blob * blob)4209 void wpa_config_free_blob(struct wpa_config_blob *blob)
4210 {
4211 	if (blob) {
4212 		os_free(blob->name);
4213 		bin_clear_free(blob->data, blob->len);
4214 		os_free(blob);
4215 	}
4216 }
4217 
4218 
4219 /**
4220  * wpa_config_remove_blob - Remove a named configuration blob
4221  * @config: Configuration data from wpa_config_read()
4222  * @name: Name of the blob to remove
4223  * Returns: 0 if blob was removed or -1 if blob was not found
4224  */
wpa_config_remove_blob(struct wpa_config * config,const char * name)4225 int wpa_config_remove_blob(struct wpa_config *config, const char *name)
4226 {
4227 	struct wpa_config_blob *pos = config->blobs, *prev = NULL;
4228 
4229 	while (pos) {
4230 		if (os_strcmp(pos->name, name) == 0) {
4231 			if (prev)
4232 				prev->next = pos->next;
4233 			else
4234 				config->blobs = pos->next;
4235 			wpa_config_free_blob(pos);
4236 			return 0;
4237 		}
4238 		prev = pos;
4239 		pos = pos->next;
4240 	}
4241 
4242 	return -1;
4243 }
4244 #endif /* CONFIG_NO_CONFIG_BLOBS */
4245 
4246 
4247 /**
4248  * wpa_config_alloc_empty - Allocate an empty configuration
4249  * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
4250  * socket
4251  * @driver_param: Driver parameters
4252  * Returns: Pointer to allocated configuration data or %NULL on failure
4253  */
wpa_config_alloc_empty(const char * ctrl_interface,const char * driver_param)4254 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
4255 					   const char *driver_param)
4256 {
4257 	struct wpa_config *config;
4258 	const int aCWmin = 4, aCWmax = 10;
4259 	const struct hostapd_wmm_ac_params ac_bk =
4260 		{ aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
4261 	const struct hostapd_wmm_ac_params ac_be =
4262 		{ aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
4263 	const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
4264 		{ aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
4265 	const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
4266 		{ aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
4267 
4268 	config = os_zalloc(sizeof(*config));
4269 	if (config == NULL)
4270 		return NULL;
4271 	config->eapol_version = DEFAULT_EAPOL_VERSION;
4272 	config->ap_scan = DEFAULT_AP_SCAN;
4273 	config->user_mpm = DEFAULT_USER_MPM;
4274 	config->max_peer_links = DEFAULT_MAX_PEER_LINKS;
4275 	config->mesh_max_inactivity = DEFAULT_MESH_MAX_INACTIVITY;
4276 	config->dot11RSNASAERetransPeriod =
4277 		DEFAULT_DOT11_RSNA_SAE_RETRANS_PERIOD;
4278 	config->fast_reauth = DEFAULT_FAST_REAUTH;
4279 	config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
4280 	config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
4281 	config->p2p_go_freq_change_policy = DEFAULT_P2P_GO_FREQ_MOVE;
4282 	config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
4283 	config->p2p_optimize_listen_chan = DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN;
4284 	config->p2p_go_ctwindow = DEFAULT_P2P_GO_CTWINDOW;
4285 	config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
4286 	config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
4287 	config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
4288 	config->max_num_sta = DEFAULT_MAX_NUM_STA;
4289 	config->ap_isolate = DEFAULT_AP_ISOLATE;
4290 	config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
4291 	config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
4292 	config->wmm_ac_params[0] = ac_be;
4293 	config->wmm_ac_params[1] = ac_bk;
4294 	config->wmm_ac_params[2] = ac_vi;
4295 	config->wmm_ac_params[3] = ac_vo;
4296 	config->p2p_search_delay = DEFAULT_P2P_SEARCH_DELAY;
4297 	config->rand_addr_lifetime = DEFAULT_RAND_ADDR_LIFETIME;
4298 	config->key_mgmt_offload = DEFAULT_KEY_MGMT_OFFLOAD;
4299 	config->cert_in_cb = DEFAULT_CERT_IN_CB;
4300 	config->wpa_rsc_relaxation = DEFAULT_WPA_RSC_RELAXATION;
4301 	config->extended_key_id = DEFAULT_EXTENDED_KEY_ID;
4302 
4303 #ifdef CONFIG_MBO
4304 	config->mbo_cell_capa = DEFAULT_MBO_CELL_CAPA;
4305 	config->disassoc_imminent_rssi_threshold =
4306 		DEFAULT_DISASSOC_IMMINENT_RSSI_THRESHOLD;
4307 	config->oce = DEFAULT_OCE_SUPPORT;
4308 	config->btm_offload = DEFAULT_BTM_OFFLOAD;
4309 #endif /* CONFIG_MBO */
4310 
4311 	if (ctrl_interface)
4312 		config->ctrl_interface = os_strdup(ctrl_interface);
4313 	if (driver_param)
4314 		config->driver_param = os_strdup(driver_param);
4315 	config->gas_rand_addr_lifetime = DEFAULT_RAND_ADDR_LIFETIME;
4316 
4317 	return config;
4318 }
4319 
4320 
4321 #ifndef CONFIG_NO_STDOUT_DEBUG
4322 /**
4323  * wpa_config_debug_dump_networks - Debug dump of configured networks
4324  * @config: Configuration data from wpa_config_read()
4325  */
wpa_config_debug_dump_networks(struct wpa_config * config)4326 void wpa_config_debug_dump_networks(struct wpa_config *config)
4327 {
4328 	size_t prio;
4329 	struct wpa_ssid *ssid;
4330 
4331 	for (prio = 0; prio < config->num_prio; prio++) {
4332 		ssid = config->pssid[prio];
4333 		wpa_printf(MSG_DEBUG, "Priority group %d",
4334 			   ssid->priority);
4335 		while (ssid) {
4336 			wpa_printf(MSG_DEBUG, "   id=%d ssid='%s'",
4337 				   ssid->id,
4338 				   wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
4339 			ssid = ssid->pnext;
4340 		}
4341 	}
4342 }
4343 #endif /* CONFIG_NO_STDOUT_DEBUG */
4344 
4345 
4346 struct global_parse_data {
4347 	char *name;
4348 	int (*parser)(const struct global_parse_data *data,
4349 		      struct wpa_config *config, int line, const char *value);
4350 	int (*get)(const char *name, struct wpa_config *config, long offset,
4351 		   char *buf, size_t buflen, int pretty_print);
4352 	void *param1, *param2, *param3;
4353 	unsigned int changed_flag;
4354 };
4355 
4356 
wpa_global_config_parse_int(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4357 static int wpa_global_config_parse_int(const struct global_parse_data *data,
4358 				       struct wpa_config *config, int line,
4359 				       const char *pos)
4360 {
4361 	int val, *dst;
4362 	char *end;
4363 
4364 	dst = (int *) (((u8 *) config) + (long) data->param1);
4365 	val = strtol(pos, &end, 0);
4366 	if (*end) {
4367 		wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
4368 			   line, pos);
4369 		return -1;
4370 	}
4371 	*dst = val;
4372 
4373 	wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
4374 
4375 	if (data->param2 && *dst < (long) data->param2) {
4376 		wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
4377 			   "min_value=%ld)", line, data->name, *dst,
4378 			   (long) data->param2);
4379 		*dst = (long) data->param2;
4380 		return -1;
4381 	}
4382 
4383 	if (data->param3 && *dst > (long) data->param3) {
4384 		wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
4385 			   "max_value=%ld)", line, data->name, *dst,
4386 			   (long) data->param3);
4387 		*dst = (long) data->param3;
4388 		return -1;
4389 	}
4390 
4391 	return 0;
4392 }
4393 
4394 
wpa_global_config_parse_str(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4395 static int wpa_global_config_parse_str(const struct global_parse_data *data,
4396 				       struct wpa_config *config, int line,
4397 				       const char *pos)
4398 {
4399 	size_t len;
4400 	char **dst, *tmp;
4401 
4402 	len = os_strlen(pos);
4403 	if (data->param2 && len < (size_t) data->param2) {
4404 		wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
4405 			   "min_len=%ld)", line, data->name,
4406 			   (unsigned long) len, (long) data->param2);
4407 		return -1;
4408 	}
4409 
4410 	if (data->param3 && len > (size_t) data->param3) {
4411 		wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
4412 			   "max_len=%ld)", line, data->name,
4413 			   (unsigned long) len, (long) data->param3);
4414 		return -1;
4415 	}
4416 
4417 	if (has_newline(pos)) {
4418 		wpa_printf(MSG_ERROR, "Line %d: invalid %s value with newline",
4419 			   line, data->name);
4420 		return -1;
4421 	}
4422 
4423 	tmp = os_strdup(pos);
4424 	if (tmp == NULL)
4425 		return -1;
4426 
4427 	dst = (char **) (((u8 *) config) + (long) data->param1);
4428 	os_free(*dst);
4429 	*dst = tmp;
4430 	wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
4431 
4432 	return 0;
4433 }
4434 
4435 
wpa_config_process_bgscan(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4436 static int wpa_config_process_bgscan(const struct global_parse_data *data,
4437 				     struct wpa_config *config, int line,
4438 				     const char *pos)
4439 {
4440 	size_t len;
4441 	char *tmp;
4442 	int res;
4443 
4444 	tmp = wpa_config_parse_string(pos, &len);
4445 	if (tmp == NULL) {
4446 		wpa_printf(MSG_ERROR, "Line %d: failed to parse %s",
4447 			   line, data->name);
4448 		return -1;
4449 	}
4450 
4451 	res = wpa_global_config_parse_str(data, config, line, tmp);
4452 	os_free(tmp);
4453 	return res;
4454 }
4455 
4456 
wpa_global_config_parse_bin(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4457 static int wpa_global_config_parse_bin(const struct global_parse_data *data,
4458 				       struct wpa_config *config, int line,
4459 				       const char *pos)
4460 {
4461 	struct wpabuf **dst, *tmp;
4462 
4463 	tmp = wpabuf_parse_bin(pos);
4464 	if (!tmp)
4465 		return -1;
4466 
4467 	dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
4468 	wpabuf_free(*dst);
4469 	*dst = tmp;
4470 	wpa_printf(MSG_DEBUG, "%s", data->name);
4471 
4472 	return 0;
4473 }
4474 
4475 
wpa_config_process_freq_list(const struct global_parse_data * data,struct wpa_config * config,int line,const char * value)4476 static int wpa_config_process_freq_list(const struct global_parse_data *data,
4477 					struct wpa_config *config, int line,
4478 					const char *value)
4479 {
4480 	int *freqs;
4481 
4482 	freqs = wpa_config_parse_int_array(value);
4483 	if (freqs == NULL)
4484 		return -1;
4485 	if (freqs[0] == 0) {
4486 		os_free(freqs);
4487 		freqs = NULL;
4488 	}
4489 	os_free(config->freq_list);
4490 	config->freq_list = freqs;
4491 	return 0;
4492 }
4493 
4494 
4495 #ifdef CONFIG_P2P
wpa_global_config_parse_ipv4(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4496 static int wpa_global_config_parse_ipv4(const struct global_parse_data *data,
4497 					struct wpa_config *config, int line,
4498 					const char *pos)
4499 {
4500 	u32 *dst;
4501 	struct hostapd_ip_addr addr;
4502 
4503 	if (hostapd_parse_ip_addr(pos, &addr) < 0)
4504 		return -1;
4505 	if (addr.af != AF_INET)
4506 		return -1;
4507 
4508 	dst = (u32 *) (((u8 *) config) + (long) data->param1);
4509 	os_memcpy(dst, &addr.u.v4.s_addr, 4);
4510 	wpa_printf(MSG_DEBUG, "%s = 0x%x", data->name,
4511 		   WPA_GET_BE32((u8 *) dst));
4512 
4513 	return 0;
4514 }
4515 #endif /* CONFIG_P2P */
4516 
4517 
wpa_config_process_country(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4518 static int wpa_config_process_country(const struct global_parse_data *data,
4519 				      struct wpa_config *config, int line,
4520 				      const char *pos)
4521 {
4522 	if (!pos[0] || !pos[1]) {
4523 		wpa_printf(MSG_DEBUG, "Invalid country set");
4524 		return -1;
4525 	}
4526 	config->country[0] = pos[0];
4527 	config->country[1] = pos[1];
4528 	wpa_printf(MSG_DEBUG, "country='%c%c'",
4529 		   config->country[0], config->country[1]);
4530 	return 0;
4531 }
4532 
4533 
wpa_config_process_load_dynamic_eap(const struct global_parse_data * data,struct wpa_config * config,int line,const char * so)4534 static int wpa_config_process_load_dynamic_eap(
4535 	const struct global_parse_data *data, struct wpa_config *config,
4536 	int line, const char *so)
4537 {
4538 	int ret;
4539 	wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
4540 	ret = eap_peer_method_load(so);
4541 	if (ret == -2) {
4542 		wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
4543 			   "reloading.");
4544 	} else if (ret) {
4545 		wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
4546 			   "method '%s'.", line, so);
4547 		return -1;
4548 	}
4549 
4550 	return 0;
4551 }
4552 
4553 
4554 #ifdef CONFIG_WPS
4555 
wpa_config_process_uuid(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4556 static int wpa_config_process_uuid(const struct global_parse_data *data,
4557 				   struct wpa_config *config, int line,
4558 				   const char *pos)
4559 {
4560 	char buf[40];
4561 	if (uuid_str2bin(pos, config->uuid)) {
4562 		wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
4563 		return -1;
4564 	}
4565 	uuid_bin2str(config->uuid, buf, sizeof(buf));
4566 	wpa_printf(MSG_DEBUG, "uuid=%s", buf);
4567 	return 0;
4568 }
4569 
4570 
wpa_config_process_device_type(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4571 static int wpa_config_process_device_type(
4572 	const struct global_parse_data *data,
4573 	struct wpa_config *config, int line, const char *pos)
4574 {
4575 	return wps_dev_type_str2bin(pos, config->device_type);
4576 }
4577 
4578 
wpa_config_process_os_version(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4579 static int wpa_config_process_os_version(const struct global_parse_data *data,
4580 					 struct wpa_config *config, int line,
4581 					 const char *pos)
4582 {
4583 	if (hexstr2bin(pos, config->os_version, 4)) {
4584 		wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
4585 		return -1;
4586 	}
4587 	wpa_printf(MSG_DEBUG, "os_version=%08x",
4588 		   WPA_GET_BE32(config->os_version));
4589 	return 0;
4590 }
4591 
4592 
wpa_config_process_wps_vendor_ext_m1(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4593 static int wpa_config_process_wps_vendor_ext_m1(
4594 	const struct global_parse_data *data,
4595 	struct wpa_config *config, int line, const char *pos)
4596 {
4597 	struct wpabuf *tmp;
4598 	int len = os_strlen(pos) / 2;
4599 	u8 *p;
4600 
4601 	if (!len) {
4602 		wpa_printf(MSG_ERROR, "Line %d: "
4603 			   "invalid wps_vendor_ext_m1", line);
4604 		return -1;
4605 	}
4606 
4607 	tmp = wpabuf_alloc(len);
4608 	if (tmp) {
4609 		p = wpabuf_put(tmp, len);
4610 
4611 		if (hexstr2bin(pos, p, len)) {
4612 			wpa_printf(MSG_ERROR, "Line %d: "
4613 				   "invalid wps_vendor_ext_m1", line);
4614 			wpabuf_free(tmp);
4615 			return -1;
4616 		}
4617 
4618 		wpabuf_free(config->wps_vendor_ext_m1);
4619 		config->wps_vendor_ext_m1 = tmp;
4620 	} else {
4621 		wpa_printf(MSG_ERROR, "Can not allocate "
4622 			   "memory for wps_vendor_ext_m1");
4623 		return -1;
4624 	}
4625 
4626 	return 0;
4627 }
4628 
4629 #endif /* CONFIG_WPS */
4630 
4631 #ifdef CONFIG_P2P
wpa_config_process_sec_device_type(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4632 static int wpa_config_process_sec_device_type(
4633 	const struct global_parse_data *data,
4634 	struct wpa_config *config, int line, const char *pos)
4635 {
4636 	int idx;
4637 
4638 	if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
4639 		wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
4640 			   "items", line);
4641 		return -1;
4642 	}
4643 
4644 	idx = config->num_sec_device_types;
4645 
4646 	if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
4647 		return -1;
4648 
4649 	config->num_sec_device_types++;
4650 	return 0;
4651 }
4652 
4653 
wpa_config_process_p2p_pref_chan(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4654 static int wpa_config_process_p2p_pref_chan(
4655 	const struct global_parse_data *data,
4656 	struct wpa_config *config, int line, const char *pos)
4657 {
4658 	struct p2p_channel *pref = NULL, *n;
4659 	size_t num = 0;
4660 	const char *pos2;
4661 	u8 op_class, chan;
4662 
4663 	/* format: class:chan,class:chan,... */
4664 
4665 	while (*pos) {
4666 		op_class = atoi(pos);
4667 		pos2 = os_strchr(pos, ':');
4668 		if (pos2 == NULL)
4669 			goto fail;
4670 		pos2++;
4671 		chan = atoi(pos2);
4672 
4673 		n = os_realloc_array(pref, num + 1,
4674 				     sizeof(struct p2p_channel));
4675 		if (n == NULL)
4676 			goto fail;
4677 		pref = n;
4678 		pref[num].op_class = op_class;
4679 		pref[num].chan = chan;
4680 		num++;
4681 
4682 		pos = os_strchr(pos2, ',');
4683 		if (pos == NULL)
4684 			break;
4685 		pos++;
4686 	}
4687 
4688 	os_free(config->p2p_pref_chan);
4689 	config->p2p_pref_chan = pref;
4690 	config->num_p2p_pref_chan = num;
4691 	wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
4692 		    (u8 *) config->p2p_pref_chan,
4693 		    config->num_p2p_pref_chan * sizeof(struct p2p_channel));
4694 
4695 	return 0;
4696 
4697 fail:
4698 	os_free(pref);
4699 	wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
4700 	return -1;
4701 }
4702 
4703 
wpa_config_process_p2p_no_go_freq(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4704 static int wpa_config_process_p2p_no_go_freq(
4705 	const struct global_parse_data *data,
4706 	struct wpa_config *config, int line, const char *pos)
4707 {
4708 	int ret;
4709 
4710 	ret = freq_range_list_parse(&config->p2p_no_go_freq, pos);
4711 	if (ret < 0) {
4712 		wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_no_go_freq", line);
4713 		return -1;
4714 	}
4715 
4716 	wpa_printf(MSG_DEBUG, "P2P: p2p_no_go_freq with %u items",
4717 		   config->p2p_no_go_freq.num);
4718 
4719 	return 0;
4720 }
4721 
wpa_config_process_p2p_device_persistent_mac_addr(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4722 static int wpa_config_process_p2p_device_persistent_mac_addr(
4723 	const struct global_parse_data *data,
4724 	struct wpa_config *config, int line, const char *pos)
4725 {
4726 	if (hwaddr_aton2(pos, config->p2p_device_persistent_mac_addr) < 0) {
4727 		wpa_printf(MSG_ERROR,
4728 			   "Line %d: Invalid p2p_device_persistent_mac_addr '%s'",
4729 			   line, pos);
4730 		return -1;
4731 	}
4732 
4733 	return 0;
4734 }
4735 
4736 #endif /* CONFIG_P2P */
4737 
4738 
wpa_config_process_hessid(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4739 static int wpa_config_process_hessid(
4740 	const struct global_parse_data *data,
4741 	struct wpa_config *config, int line, const char *pos)
4742 {
4743 	if (hwaddr_aton2(pos, config->hessid) < 0) {
4744 		wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
4745 			   line, pos);
4746 		return -1;
4747 	}
4748 
4749 	return 0;
4750 }
4751 
4752 
wpa_config_process_sae_groups(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4753 static int wpa_config_process_sae_groups(
4754 	const struct global_parse_data *data,
4755 	struct wpa_config *config, int line, const char *pos)
4756 {
4757 	int *groups = wpa_config_parse_int_array(pos);
4758 	if (groups == NULL) {
4759 		wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'",
4760 			   line, pos);
4761 		return -1;
4762 	}
4763 
4764 	os_free(config->sae_groups);
4765 	config->sae_groups = groups;
4766 
4767 	return 0;
4768 }
4769 
4770 
wpa_config_process_ap_vendor_elements(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4771 static int wpa_config_process_ap_vendor_elements(
4772 	const struct global_parse_data *data,
4773 	struct wpa_config *config, int line, const char *pos)
4774 {
4775 	struct wpabuf *tmp;
4776 	int len = os_strlen(pos) / 2;
4777 	u8 *p;
4778 
4779 	if (!len) {
4780 		wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements",
4781 			   line);
4782 		return -1;
4783 	}
4784 
4785 	tmp = wpabuf_alloc(len);
4786 	if (tmp) {
4787 		p = wpabuf_put(tmp, len);
4788 
4789 		if (hexstr2bin(pos, p, len)) {
4790 			wpa_printf(MSG_ERROR, "Line %d: invalid "
4791 				   "ap_vendor_elements", line);
4792 			wpabuf_free(tmp);
4793 			return -1;
4794 		}
4795 
4796 		wpabuf_free(config->ap_vendor_elements);
4797 		config->ap_vendor_elements = tmp;
4798 	} else {
4799 		wpa_printf(MSG_ERROR, "Cannot allocate memory for "
4800 			   "ap_vendor_elements");
4801 		return -1;
4802 	}
4803 
4804 	return 0;
4805 }
4806 
4807 
4808 #ifdef CONFIG_CTRL_IFACE
wpa_config_process_no_ctrl_interface(const struct global_parse_data * data,struct wpa_config * config,int line,const char * pos)4809 static int wpa_config_process_no_ctrl_interface(
4810 	const struct global_parse_data *data,
4811 	struct wpa_config *config, int line, const char *pos)
4812 {
4813 	wpa_printf(MSG_DEBUG, "no_ctrl_interface -> ctrl_interface=NULL");
4814 	os_free(config->ctrl_interface);
4815 	config->ctrl_interface = NULL;
4816 	return 0;
4817 }
4818 #endif /* CONFIG_CTRL_IFACE */
4819 
4820 
wpa_config_get_int(const char * name,struct wpa_config * config,long offset,char * buf,size_t buflen,int pretty_print)4821 static int wpa_config_get_int(const char *name, struct wpa_config *config,
4822 			      long offset, char *buf, size_t buflen,
4823 			      int pretty_print)
4824 {
4825 	int *val = (int *) (((u8 *) config) + (long) offset);
4826 
4827 	if (pretty_print)
4828 		return os_snprintf(buf, buflen, "%s=%d\n", name, *val);
4829 	return os_snprintf(buf, buflen, "%d", *val);
4830 }
4831 
4832 
wpa_config_get_str(const char * name,struct wpa_config * config,long offset,char * buf,size_t buflen,int pretty_print)4833 static int wpa_config_get_str(const char *name, struct wpa_config *config,
4834 			      long offset, char *buf, size_t buflen,
4835 			      int pretty_print)
4836 {
4837 	char **val = (char **) (((u8 *) config) + (long) offset);
4838 	int res;
4839 
4840 	if (pretty_print)
4841 		res = os_snprintf(buf, buflen, "%s=%s\n", name,
4842 				  *val ? *val : "null");
4843 	else if (!*val)
4844 		return -1;
4845 	else
4846 		res = os_snprintf(buf, buflen, "%s", *val);
4847 	if (os_snprintf_error(buflen, res))
4848 		res = -1;
4849 
4850 	return res;
4851 }
4852 
4853 
4854 #ifdef CONFIG_P2P
wpa_config_get_ipv4(const char * name,struct wpa_config * config,long offset,char * buf,size_t buflen,int pretty_print)4855 static int wpa_config_get_ipv4(const char *name, struct wpa_config *config,
4856 			       long offset, char *buf, size_t buflen,
4857 			       int pretty_print)
4858 {
4859 	void *val = ((u8 *) config) + (long) offset;
4860 	int res;
4861 	char addr[INET_ADDRSTRLEN];
4862 
4863 	if (!val || !inet_ntop(AF_INET, val, addr, sizeof(addr)))
4864 		return -1;
4865 
4866 	if (pretty_print)
4867 		res = os_snprintf(buf, buflen, "%s=%s\n", name, addr);
4868 	else
4869 		res = os_snprintf(buf, buflen, "%s", addr);
4870 
4871 	if (os_snprintf_error(buflen, res))
4872 		res = -1;
4873 
4874 	return res;
4875 }
4876 #endif /* CONFIG_P2P */
4877 
4878 
4879 #ifdef OFFSET
4880 #undef OFFSET
4881 #endif /* OFFSET */
4882 /* OFFSET: Get offset of a variable within the wpa_config structure */
4883 #define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
4884 
4885 #define FUNC(f) #f, wpa_config_process_ ## f, NULL, OFFSET(f), NULL, NULL
4886 #define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL, NULL
4887 #define _INT(f) #f, wpa_global_config_parse_int, wpa_config_get_int, OFFSET(f)
4888 #define INT(f) _INT(f), NULL, NULL
4889 #define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
4890 #define _STR(f) #f, wpa_global_config_parse_str, wpa_config_get_str, OFFSET(f)
4891 #define STR(f) _STR(f), NULL, NULL
4892 #define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
4893 #define BIN(f) #f, wpa_global_config_parse_bin, NULL, OFFSET(f), NULL, NULL
4894 #define IPV4(f) #f, wpa_global_config_parse_ipv4, wpa_config_get_ipv4,  \
4895 	OFFSET(f), NULL, NULL
4896 
4897 static const struct global_parse_data global_fields[] = {
4898 #ifdef CONFIG_CTRL_IFACE
4899 	{ STR(ctrl_interface), 0 },
4900 	{ FUNC_NO_VAR(no_ctrl_interface), 0 },
4901 	{ STR(ctrl_interface_group), 0 } /* deprecated */,
4902 #endif /* CONFIG_CTRL_IFACE */
4903 #ifdef CONFIG_MACSEC
4904 	{ INT_RANGE(eapol_version, 1, 3), 0 },
4905 #else /* CONFIG_MACSEC */
4906 	{ INT_RANGE(eapol_version, 1, 2), 0 },
4907 #endif /* CONFIG_MACSEC */
4908 	{ INT(ap_scan), 0 },
4909 	{ FUNC(bgscan), 0 },
4910 #ifdef CONFIG_MESH
4911 	{ INT(user_mpm), 0 },
4912 	{ INT_RANGE(max_peer_links, 0, 255), 0 },
4913 	{ INT(mesh_max_inactivity), 0 },
4914 	{ INT(dot11RSNASAERetransPeriod), 0 },
4915 #endif /* CONFIG_MESH */
4916 	{ INT(disable_scan_offload), 0 },
4917 	{ INT(fast_reauth), 0 },
4918 	{ STR(opensc_engine_path), 0 },
4919 	{ STR(pkcs11_engine_path), 0 },
4920 	{ STR(pkcs11_module_path), 0 },
4921 	{ STR(openssl_ciphers), 0 },
4922 	{ STR(pcsc_reader), 0 },
4923 	{ STR(pcsc_pin), 0 },
4924 	{ INT(external_sim), 0 },
4925 	{ STR(driver_param), 0 },
4926 	{ INT(dot11RSNAConfigPMKLifetime), 0 },
4927 	{ INT(dot11RSNAConfigPMKReauthThreshold), 0 },
4928 	{ INT(dot11RSNAConfigSATimeout), 0 },
4929 #ifndef CONFIG_NO_CONFIG_WRITE
4930 	{ INT(update_config), 0 },
4931 #endif /* CONFIG_NO_CONFIG_WRITE */
4932 	{ FUNC_NO_VAR(load_dynamic_eap), 0 },
4933 #ifdef CONFIG_WPS
4934 	{ FUNC(uuid), CFG_CHANGED_UUID },
4935 	{ INT_RANGE(auto_uuid, 0, 1), 0 },
4936 	{ STR_RANGE(device_name, 0, WPS_DEV_NAME_MAX_LEN),
4937 	  CFG_CHANGED_DEVICE_NAME },
4938 	{ STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
4939 	{ STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
4940 	{ STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
4941 	{ STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
4942 	{ FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
4943 	{ FUNC(os_version), CFG_CHANGED_OS_VERSION },
4944 	{ STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
4945 	{ INT_RANGE(wps_cred_processing, 0, 2), 0 },
4946 	{ INT_RANGE(wps_cred_add_sae, 0, 1), 0 },
4947 	{ FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
4948 #endif /* CONFIG_WPS */
4949 #ifdef CONFIG_P2P
4950 	{ FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
4951 	{ INT(p2p_listen_reg_class), CFG_CHANGED_P2P_LISTEN_CHANNEL },
4952 	{ INT(p2p_listen_channel), CFG_CHANGED_P2P_LISTEN_CHANNEL },
4953 	{ INT(p2p_oper_reg_class), CFG_CHANGED_P2P_OPER_CHANNEL },
4954 	{ INT(p2p_oper_channel), CFG_CHANGED_P2P_OPER_CHANNEL },
4955 	{ INT_RANGE(p2p_go_intent, 0, 15), 0 },
4956 	{ STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
4957 	{ INT_RANGE(persistent_reconnect, 0, 1), 0 },
4958 	{ INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
4959 	{ INT(p2p_group_idle), 0 },
4960 	{ INT_RANGE(p2p_go_freq_change_policy, 0, P2P_GO_FREQ_MOVE_MAX), 0 },
4961 	{ INT_RANGE(p2p_passphrase_len, 8, 63),
4962 	  CFG_CHANGED_P2P_PASSPHRASE_LEN },
4963 	{ FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
4964 	{ FUNC(p2p_no_go_freq), CFG_CHANGED_P2P_PREF_CHAN },
4965 	{ INT_RANGE(p2p_add_cli_chan, 0, 1), 0 },
4966 	{ INT_RANGE(p2p_optimize_listen_chan, 0, 1), 0 },
4967 	{ INT(p2p_go_ht40), 0 },
4968 	{ INT(p2p_go_vht), 0 },
4969 	{ INT(p2p_go_he), 0 },
4970 	{ INT(p2p_go_edmg), 0 },
4971 	{ INT(p2p_disabled), 0 },
4972 	{ INT_RANGE(p2p_go_ctwindow, 0, 127), 0 },
4973 	{ INT(p2p_no_group_iface), 0 },
4974 	{ INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 },
4975 	{ IPV4(ip_addr_go), 0 },
4976 	{ IPV4(ip_addr_mask), 0 },
4977 	{ IPV4(ip_addr_start), 0 },
4978 	{ IPV4(ip_addr_end), 0 },
4979 	{ INT_RANGE(p2p_cli_probe, 0, 1), 0 },
4980 	{ INT(p2p_device_random_mac_addr), 0 },
4981 	{ FUNC(p2p_device_persistent_mac_addr), 0 },
4982 	{ INT(p2p_interface_random_mac_addr), 0 },
4983 #endif /* CONFIG_P2P */
4984 	{ FUNC(country), CFG_CHANGED_COUNTRY },
4985 	{ INT(bss_max_count), 0 },
4986 	{ INT(bss_expiration_age), 0 },
4987 	{ INT(bss_expiration_scan_count), 0 },
4988 	{ INT_RANGE(filter_ssids, 0, 1), 0 },
4989 	{ INT_RANGE(filter_rssi, -100, 0), 0 },
4990 	{ INT(max_num_sta), 0 },
4991 	{ INT_RANGE(ap_isolate, 0, 1), 0 },
4992 	{ INT_RANGE(disassoc_low_ack, 0, 1), 0 },
4993 #ifdef CONFIG_HS20
4994 	{ INT_RANGE(hs20, 0, 1), 0 },
4995 #endif /* CONFIG_HS20 */
4996 	{ INT_RANGE(interworking, 0, 1), 0 },
4997 	{ FUNC(hessid), 0 },
4998 	{ INT_RANGE(access_network_type, 0, 15), 0 },
4999 	{ INT_RANGE(go_interworking, 0, 1), 0 },
5000 	{ INT_RANGE(go_access_network_type, 0, 15), 0 },
5001 	{ INT_RANGE(go_internet, 0, 1), 0 },
5002 	{ INT_RANGE(go_venue_group, 0, 255), 0 },
5003 	{ INT_RANGE(go_venue_type, 0, 255), 0 },
5004 	{ INT_RANGE(pbc_in_m1, 0, 1), 0 },
5005 	{ STR(autoscan), 0 },
5006 	{ INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff),
5007 	  CFG_CHANGED_NFC_PASSWORD_TOKEN },
5008 	{ BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
5009 	{ BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
5010 	{ BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN },
5011 	{ STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
5012 	{ INT(p2p_go_max_inactivity), 0 },
5013 	{ INT_RANGE(auto_interworking, 0, 1), 0 },
5014 	{ INT(okc), 0 },
5015 	{ INT(pmf), 0 },
5016 	{ FUNC(sae_groups), 0 },
5017 	{ INT_RANGE(sae_pwe, 0, 3), 0 },
5018 	{ INT_RANGE(sae_pmkid_in_assoc, 0, 1), 0 },
5019 	{ INT(dtim_period), 0 },
5020 	{ INT(beacon_int), 0 },
5021 	{ FUNC(ap_vendor_elements), 0 },
5022 	{ INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
5023 	{ FUNC(freq_list), 0 },
5024 	{ INT(scan_cur_freq), 0 },
5025 	{ INT(sched_scan_interval), 0 },
5026 	{ INT(sched_scan_start_delay), 0 },
5027 	{ INT(tdls_external_control), 0},
5028 	{ STR(osu_dir), 0 },
5029 	{ STR(wowlan_triggers), CFG_CHANGED_WOWLAN_TRIGGERS },
5030 	{ INT(p2p_search_delay), 0},
5031 	{ INT(mac_addr), 0 },
5032 	{ INT(rand_addr_lifetime), 0 },
5033 	{ INT(preassoc_mac_addr), 0 },
5034 	{ INT(key_mgmt_offload), 0},
5035 	{ INT(passive_scan), 0 },
5036 	{ INT(reassoc_same_bss_optim), 0 },
5037 	{ INT(wps_priority), 0},
5038 #ifdef CONFIG_FST
5039 	{ STR_RANGE(fst_group_id, 1, FST_MAX_GROUP_ID_LEN), 0 },
5040 	{ INT_RANGE(fst_priority, 1, FST_MAX_PRIO_VALUE), 0 },
5041 	{ INT_RANGE(fst_llt, 1, FST_MAX_LLT_MS), 0 },
5042 #endif /* CONFIG_FST */
5043 	{ INT_RANGE(cert_in_cb, 0, 1), 0 },
5044 	{ INT_RANGE(wpa_rsc_relaxation, 0, 1), 0 },
5045 	{ STR(sched_scan_plans), CFG_CHANGED_SCHED_SCAN_PLANS },
5046 #ifdef CONFIG_MBO
5047 	{ STR(non_pref_chan), 0 },
5048 	{ INT_RANGE(mbo_cell_capa, MBO_CELL_CAPA_AVAILABLE,
5049 		    MBO_CELL_CAPA_NOT_SUPPORTED), 0 },
5050 	{ INT_RANGE(disassoc_imminent_rssi_threshold, -120, 0), 0 },
5051 	{ INT_RANGE(oce, 0, 3), 0 },
5052 	{ INT_RANGE(btm_offload, 0, 1), CFG_CHANGED_DISABLE_BTM_NOTIFY },
5053 #endif /* CONFIG_MBO */
5054 	{ INT(gas_address3), 0 },
5055 	{ INT_RANGE(ftm_responder, 0, 1), 0 },
5056 	{ INT_RANGE(ftm_initiator, 0, 1), 0 },
5057 	{ INT(gas_rand_addr_lifetime), 0 },
5058 	{ INT_RANGE(gas_rand_mac_addr, 0, 2), 0 },
5059 #ifdef CONFIG_DPP
5060 	{ INT_RANGE(dpp_config_processing, 0, 2), 0 },
5061 	{ STR(dpp_name), 0 },
5062 	{ STR(dpp_mud_url), 0 },
5063 #endif /* CONFIG_DPP */
5064 	{ INT_RANGE(coloc_intf_reporting, 0, 1), 0 },
5065 	{ INT_RANGE(bss_no_flush_when_down, 0, 1), 0 },
5066 #ifdef CONFIG_WNM
5067 	{ INT_RANGE(disable_btm, 0, 1), CFG_CHANGED_DISABLE_BTM },
5068 	{ INT_RANGE(extended_key_id, 0, 1), 0 },
5069 #endif /* CONFIG_WNM */
5070 	{ INT_RANGE(wowlan_disconnect_on_deinit, 0, 1), 0},
5071 };
5072 
5073 #undef FUNC
5074 #undef _INT
5075 #undef INT
5076 #undef INT_RANGE
5077 #undef _STR
5078 #undef STR
5079 #undef STR_RANGE
5080 #undef BIN
5081 #undef IPV4
5082 #define NUM_GLOBAL_FIELDS ARRAY_SIZE(global_fields)
5083 
5084 
wpa_config_dump_values(struct wpa_config * config,char * buf,size_t buflen)5085 int wpa_config_dump_values(struct wpa_config *config, char *buf, size_t buflen)
5086 {
5087 	int result = 0;
5088 	size_t i;
5089 
5090 	for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
5091 		const struct global_parse_data *field = &global_fields[i];
5092 		int tmp;
5093 
5094 		if (!field->get)
5095 			continue;
5096 
5097 		tmp = field->get(field->name, config, (long) field->param1,
5098 				 buf, buflen, 1);
5099 		if (tmp < 0)
5100 			return -1;
5101 		buf += tmp;
5102 		buflen -= tmp;
5103 		result += tmp;
5104 	}
5105 	return result;
5106 }
5107 
5108 
wpa_config_get_value(const char * name,struct wpa_config * config,char * buf,size_t buflen)5109 int wpa_config_get_value(const char *name, struct wpa_config *config,
5110 			 char *buf, size_t buflen)
5111 {
5112 	size_t i;
5113 
5114 	for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
5115 		const struct global_parse_data *field = &global_fields[i];
5116 
5117 		if (os_strcmp(name, field->name) != 0)
5118 			continue;
5119 		if (!field->get)
5120 			break;
5121 		return field->get(name, config, (long) field->param1,
5122 				  buf, buflen, 0);
5123 	}
5124 
5125 	return -1;
5126 }
5127 
5128 
wpa_config_get_num_global_field_names(void)5129 int wpa_config_get_num_global_field_names(void)
5130 {
5131 	return NUM_GLOBAL_FIELDS;
5132 }
5133 
5134 
wpa_config_get_global_field_name(unsigned int i,int * no_var)5135 const char * wpa_config_get_global_field_name(unsigned int i, int *no_var)
5136 {
5137 	if (i >= NUM_GLOBAL_FIELDS)
5138 		return NULL;
5139 
5140 	if (no_var)
5141 		*no_var = !global_fields[i].param1;
5142 	return global_fields[i].name;
5143 }
5144 
5145 
wpa_config_process_global(struct wpa_config * config,char * pos,int line)5146 int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
5147 {
5148 	size_t i;
5149 	int ret = 0;
5150 
5151 	for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
5152 		const struct global_parse_data *field = &global_fields[i];
5153 		size_t flen = os_strlen(field->name);
5154 		if (os_strncmp(pos, field->name, flen) != 0 ||
5155 		    pos[flen] != '=')
5156 			continue;
5157 
5158 		if (field->parser(field, config, line, pos + flen + 1)) {
5159 			wpa_printf(MSG_ERROR, "Line %d: failed to "
5160 				   "parse '%s'.", line, pos);
5161 			ret = -1;
5162 		}
5163 		if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN)
5164 			config->wps_nfc_pw_from_config = 1;
5165 		config->changed_parameters |= field->changed_flag;
5166 		break;
5167 	}
5168 	if (i == NUM_GLOBAL_FIELDS) {
5169 #ifdef CONFIG_AP
5170 		if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
5171 			char *tmp = os_strchr(pos, '=');
5172 			if (tmp == NULL) {
5173 				if (line < 0)
5174 					return -1;
5175 				wpa_printf(MSG_ERROR, "Line %d: invalid line "
5176 					   "'%s'", line, pos);
5177 				return -1;
5178 			}
5179 			*tmp++ = '\0';
5180 			if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
5181 						  tmp)) {
5182 				wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
5183 					   "AC item", line);
5184 				return -1;
5185 			}
5186 			return ret;
5187 		}
5188 #endif /* CONFIG_AP */
5189 		if (line < 0)
5190 			return -1;
5191 		wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
5192 			   line, pos);
5193 		ret = -1;
5194 	}
5195 
5196 	return ret;
5197 }
5198