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Commit | Line | Data |
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6fc6879b JM |
1 | /* |
2 | * WPA Supplicant / Configuration parser and common functions | |
56586197 | 3 | * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi> |
6fc6879b JM |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * Alternatively, this software may be distributed under the terms of BSD | |
10 | * license. | |
11 | * | |
12 | * See README and COPYING for more details. | |
13 | */ | |
14 | ||
15 | #include "includes.h" | |
16 | ||
17 | #include "common.h" | |
18 | #include "wpa.h" | |
19 | #include "sha1.h" | |
20 | #include "eap_peer/eap.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 */ | |
38 | int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid, | |
39 | int line, const char *value); | |
40 | ||
41 | #ifndef NO_CONFIG_WRITE | |
42 | /* Writer function (i.e., to get the variable in text format from | |
43 | * internal presentation). */ | |
44 | char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid); | |
45 | #endif /* NO_CONFIG_WRITE */ | |
46 | ||
47 | /* Variable specific parameters for the parser. */ | |
48 | void *param1, *param2, *param3, *param4; | |
49 | ||
50 | /* 0 = this variable can be included in debug output and ctrl_iface | |
51 | * 1 = this variable contains key/private data and it must not be | |
52 | * included in debug output unless explicitly requested. In | |
53 | * addition, this variable will not be readable through the | |
54 | * ctrl_iface. | |
55 | */ | |
56 | int key_data; | |
57 | }; | |
58 | ||
59 | ||
60 | static char * wpa_config_parse_string(const char *value, size_t *len) | |
61 | { | |
62 | if (*value == '"') { | |
e237a6b0 JM |
63 | const char *pos; |
64 | char *str; | |
6fc6879b JM |
65 | value++; |
66 | pos = os_strrchr(value, '"'); | |
67 | if (pos == NULL || pos[1] != '\0') | |
68 | return NULL; | |
e237a6b0 JM |
69 | *len = pos - value; |
70 | str = os_malloc(*len + 1); | |
71 | if (str == NULL) | |
72 | return NULL; | |
73 | os_memcpy(str, value, *len); | |
74 | str[*len] = '\0'; | |
75 | return str; | |
6fc6879b JM |
76 | } else { |
77 | u8 *str; | |
78 | size_t tlen, hlen = os_strlen(value); | |
79 | if (hlen & 1) | |
80 | return NULL; | |
81 | tlen = hlen / 2; | |
82 | str = os_malloc(tlen + 1); | |
83 | if (str == NULL) | |
84 | return NULL; | |
85 | if (hexstr2bin(value, str, tlen)) { | |
86 | os_free(str); | |
87 | return NULL; | |
88 | } | |
89 | str[tlen] = '\0'; | |
90 | *len = tlen; | |
91 | return (char *) str; | |
92 | } | |
93 | } | |
94 | ||
95 | ||
96 | static int wpa_config_parse_str(const struct parse_data *data, | |
97 | struct wpa_ssid *ssid, | |
98 | int line, const char *value) | |
99 | { | |
100 | size_t res_len, *dst_len; | |
101 | char **dst, *tmp; | |
102 | ||
b56c0546 JM |
103 | if (os_strcmp(value, "NULL") == 0) { |
104 | wpa_printf(MSG_DEBUG, "Unset configuration string '%s'", | |
105 | data->name); | |
106 | tmp = NULL; | |
107 | res_len = 0; | |
108 | goto set; | |
109 | } | |
110 | ||
6fc6879b JM |
111 | tmp = wpa_config_parse_string(value, &res_len); |
112 | if (tmp == NULL) { | |
113 | wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.", | |
114 | line, data->name, | |
115 | data->key_data ? "[KEY DATA REMOVED]" : value); | |
116 | return -1; | |
117 | } | |
118 | ||
119 | if (data->key_data) { | |
120 | wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name, | |
121 | (u8 *) tmp, res_len); | |
122 | } else { | |
123 | wpa_hexdump_ascii(MSG_MSGDUMP, data->name, | |
124 | (u8 *) tmp, res_len); | |
125 | } | |
126 | ||
127 | if (data->param3 && res_len < (size_t) data->param3) { | |
128 | wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu " | |
129 | "min_len=%ld)", line, data->name, | |
130 | (unsigned long) res_len, (long) data->param3); | |
131 | os_free(tmp); | |
132 | return -1; | |
133 | } | |
134 | ||
135 | if (data->param4 && res_len > (size_t) data->param4) { | |
136 | wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu " | |
137 | "max_len=%ld)", line, data->name, | |
138 | (unsigned long) res_len, (long) data->param4); | |
139 | os_free(tmp); | |
140 | return -1; | |
141 | } | |
142 | ||
b56c0546 | 143 | set: |
6fc6879b JM |
144 | dst = (char **) (((u8 *) ssid) + (long) data->param1); |
145 | dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2); | |
146 | os_free(*dst); | |
147 | *dst = tmp; | |
148 | if (data->param2) | |
149 | *dst_len = res_len; | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | ||
155 | #ifndef NO_CONFIG_WRITE | |
156 | static int is_hex(const u8 *data, size_t len) | |
157 | { | |
158 | size_t i; | |
159 | ||
160 | for (i = 0; i < len; i++) { | |
161 | if (data[i] < 32 || data[i] >= 127) | |
162 | return 1; | |
163 | } | |
164 | return 0; | |
165 | } | |
166 | ||
167 | ||
168 | static char * wpa_config_write_string_ascii(const u8 *value, size_t len) | |
169 | { | |
170 | char *buf; | |
171 | ||
172 | buf = os_malloc(len + 3); | |
173 | if (buf == NULL) | |
174 | return NULL; | |
175 | buf[0] = '"'; | |
176 | os_memcpy(buf + 1, value, len); | |
177 | buf[len + 1] = '"'; | |
178 | buf[len + 2] = '\0'; | |
179 | ||
180 | return buf; | |
181 | } | |
182 | ||
183 | ||
184 | static char * wpa_config_write_string_hex(const u8 *value, size_t len) | |
185 | { | |
186 | char *buf; | |
187 | ||
188 | buf = os_zalloc(2 * len + 1); | |
189 | if (buf == NULL) | |
190 | return NULL; | |
191 | wpa_snprintf_hex(buf, 2 * len + 1, value, len); | |
192 | ||
193 | return buf; | |
194 | } | |
195 | ||
196 | ||
197 | static char * wpa_config_write_string(const u8 *value, size_t len) | |
198 | { | |
199 | if (value == NULL) | |
200 | return NULL; | |
201 | ||
202 | if (is_hex(value, len)) | |
203 | return wpa_config_write_string_hex(value, len); | |
204 | else | |
205 | return wpa_config_write_string_ascii(value, len); | |
206 | } | |
207 | ||
208 | ||
209 | static char * wpa_config_write_str(const struct parse_data *data, | |
210 | struct wpa_ssid *ssid) | |
211 | { | |
212 | size_t len; | |
213 | char **src; | |
214 | ||
215 | src = (char **) (((u8 *) ssid) + (long) data->param1); | |
216 | if (*src == NULL) | |
217 | return NULL; | |
218 | ||
219 | if (data->param2) | |
220 | len = *((size_t *) (((u8 *) ssid) + (long) data->param2)); | |
221 | else | |
222 | len = os_strlen(*src); | |
223 | ||
224 | return wpa_config_write_string((const u8 *) *src, len); | |
225 | } | |
226 | #endif /* NO_CONFIG_WRITE */ | |
227 | ||
228 | ||
229 | static int wpa_config_parse_int(const struct parse_data *data, | |
230 | struct wpa_ssid *ssid, | |
231 | int line, const char *value) | |
232 | { | |
233 | int *dst; | |
234 | ||
235 | dst = (int *) (((u8 *) ssid) + (long) data->param1); | |
236 | *dst = atoi(value); | |
237 | wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst); | |
238 | ||
239 | if (data->param3 && *dst < (long) data->param3) { | |
240 | wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d " | |
241 | "min_value=%ld)", line, data->name, *dst, | |
242 | (long) data->param3); | |
243 | *dst = (long) data->param3; | |
244 | return -1; | |
245 | } | |
246 | ||
247 | if (data->param4 && *dst > (long) data->param4) { | |
248 | wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d " | |
249 | "max_value=%ld)", line, data->name, *dst, | |
250 | (long) data->param4); | |
251 | *dst = (long) data->param4; | |
252 | return -1; | |
253 | } | |
254 | ||
255 | return 0; | |
256 | } | |
257 | ||
258 | ||
259 | #ifndef NO_CONFIG_WRITE | |
260 | static char * wpa_config_write_int(const struct parse_data *data, | |
261 | struct wpa_ssid *ssid) | |
262 | { | |
263 | int *src, res; | |
264 | char *value; | |
265 | ||
266 | src = (int *) (((u8 *) ssid) + (long) data->param1); | |
267 | ||
268 | value = os_malloc(20); | |
269 | if (value == NULL) | |
270 | return NULL; | |
271 | res = os_snprintf(value, 20, "%d", *src); | |
272 | if (res < 0 || res >= 20) { | |
273 | os_free(value); | |
274 | return NULL; | |
275 | } | |
276 | value[20 - 1] = '\0'; | |
277 | return value; | |
278 | } | |
279 | #endif /* NO_CONFIG_WRITE */ | |
280 | ||
281 | ||
282 | static int wpa_config_parse_bssid(const struct parse_data *data, | |
283 | struct wpa_ssid *ssid, int line, | |
284 | const char *value) | |
285 | { | |
286 | if (hwaddr_aton(value, ssid->bssid)) { | |
287 | wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.", | |
288 | line, value); | |
289 | return -1; | |
290 | } | |
291 | ssid->bssid_set = 1; | |
292 | wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN); | |
293 | return 0; | |
294 | } | |
295 | ||
296 | ||
297 | #ifndef NO_CONFIG_WRITE | |
298 | static char * wpa_config_write_bssid(const struct parse_data *data, | |
299 | struct wpa_ssid *ssid) | |
300 | { | |
301 | char *value; | |
302 | int res; | |
303 | ||
304 | if (!ssid->bssid_set) | |
305 | return NULL; | |
306 | ||
307 | value = os_malloc(20); | |
308 | if (value == NULL) | |
309 | return NULL; | |
310 | res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid)); | |
311 | if (res < 0 || res >= 20) { | |
312 | os_free(value); | |
313 | return NULL; | |
314 | } | |
315 | value[20 - 1] = '\0'; | |
316 | return value; | |
317 | } | |
318 | #endif /* NO_CONFIG_WRITE */ | |
319 | ||
320 | ||
321 | static int wpa_config_parse_psk(const struct parse_data *data, | |
322 | struct wpa_ssid *ssid, int line, | |
323 | const char *value) | |
324 | { | |
325 | if (*value == '"') { | |
326 | #ifndef CONFIG_NO_PBKDF2 | |
327 | const char *pos; | |
328 | size_t len; | |
329 | ||
330 | value++; | |
331 | pos = os_strrchr(value, '"'); | |
332 | if (pos) | |
333 | len = pos - value; | |
334 | else | |
335 | len = os_strlen(value); | |
336 | if (len < 8 || len > 63) { | |
337 | wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase " | |
338 | "length %lu (expected: 8..63) '%s'.", | |
339 | line, (unsigned long) len, value); | |
340 | return -1; | |
341 | } | |
342 | wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)", | |
343 | (u8 *) value, len); | |
344 | if (ssid->passphrase && os_strlen(ssid->passphrase) == len && | |
345 | os_memcmp(ssid->passphrase, value, len) == 0) | |
346 | return 0; | |
347 | ssid->psk_set = 0; | |
348 | os_free(ssid->passphrase); | |
349 | ssid->passphrase = os_malloc(len + 1); | |
350 | if (ssid->passphrase == NULL) | |
351 | return -1; | |
352 | os_memcpy(ssid->passphrase, value, len); | |
353 | ssid->passphrase[len] = '\0'; | |
354 | return 0; | |
355 | #else /* CONFIG_NO_PBKDF2 */ | |
356 | wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not " | |
357 | "supported.", line); | |
358 | return -1; | |
359 | #endif /* CONFIG_NO_PBKDF2 */ | |
360 | } | |
361 | ||
362 | if (hexstr2bin(value, ssid->psk, PMK_LEN) || | |
363 | value[PMK_LEN * 2] != '\0') { | |
364 | wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.", | |
365 | line, value); | |
366 | return -1; | |
367 | } | |
368 | ||
369 | os_free(ssid->passphrase); | |
370 | ssid->passphrase = NULL; | |
371 | ||
372 | ssid->psk_set = 1; | |
373 | wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN); | |
374 | return 0; | |
375 | } | |
376 | ||
377 | ||
378 | #ifndef NO_CONFIG_WRITE | |
379 | static char * wpa_config_write_psk(const struct parse_data *data, | |
380 | struct wpa_ssid *ssid) | |
381 | { | |
382 | if (ssid->passphrase) | |
383 | return wpa_config_write_string_ascii( | |
384 | (const u8 *) ssid->passphrase, | |
385 | os_strlen(ssid->passphrase)); | |
386 | ||
387 | if (ssid->psk_set) | |
388 | return wpa_config_write_string_hex(ssid->psk, PMK_LEN); | |
389 | ||
390 | return NULL; | |
391 | } | |
392 | #endif /* NO_CONFIG_WRITE */ | |
393 | ||
394 | ||
395 | static int wpa_config_parse_proto(const struct parse_data *data, | |
396 | struct wpa_ssid *ssid, int line, | |
397 | const char *value) | |
398 | { | |
399 | int val = 0, last, errors = 0; | |
400 | char *start, *end, *buf; | |
401 | ||
402 | buf = os_strdup(value); | |
403 | if (buf == NULL) | |
404 | return -1; | |
405 | start = buf; | |
406 | ||
407 | while (*start != '\0') { | |
408 | while (*start == ' ' || *start == '\t') | |
409 | start++; | |
410 | if (*start == '\0') | |
411 | break; | |
412 | end = start; | |
413 | while (*end != ' ' && *end != '\t' && *end != '\0') | |
414 | end++; | |
415 | last = *end == '\0'; | |
416 | *end = '\0'; | |
417 | if (os_strcmp(start, "WPA") == 0) | |
418 | val |= WPA_PROTO_WPA; | |
419 | else if (os_strcmp(start, "RSN") == 0 || | |
420 | os_strcmp(start, "WPA2") == 0) | |
421 | val |= WPA_PROTO_RSN; | |
422 | else { | |
423 | wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'", | |
424 | line, start); | |
425 | errors++; | |
426 | } | |
427 | ||
428 | if (last) | |
429 | break; | |
430 | start = end + 1; | |
431 | } | |
432 | os_free(buf); | |
433 | ||
434 | if (val == 0) { | |
435 | wpa_printf(MSG_ERROR, | |
436 | "Line %d: no proto values configured.", line); | |
437 | errors++; | |
438 | } | |
439 | ||
440 | wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val); | |
441 | ssid->proto = val; | |
442 | return errors ? -1 : 0; | |
443 | } | |
444 | ||
445 | ||
446 | #ifndef NO_CONFIG_WRITE | |
447 | static char * wpa_config_write_proto(const struct parse_data *data, | |
448 | struct wpa_ssid *ssid) | |
449 | { | |
450 | int first = 1, ret; | |
451 | char *buf, *pos, *end; | |
452 | ||
453 | pos = buf = os_zalloc(10); | |
454 | if (buf == NULL) | |
455 | return NULL; | |
456 | end = buf + 10; | |
457 | ||
458 | if (ssid->proto & WPA_PROTO_WPA) { | |
459 | ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " "); | |
460 | if (ret < 0 || ret >= end - pos) | |
461 | return buf; | |
462 | pos += ret; | |
463 | first = 0; | |
464 | } | |
465 | ||
466 | if (ssid->proto & WPA_PROTO_RSN) { | |
467 | ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " "); | |
468 | if (ret < 0 || ret >= end - pos) | |
469 | return buf; | |
470 | pos += ret; | |
471 | first = 0; | |
472 | } | |
473 | ||
474 | return buf; | |
475 | } | |
476 | #endif /* NO_CONFIG_WRITE */ | |
477 | ||
478 | ||
479 | static int wpa_config_parse_key_mgmt(const struct parse_data *data, | |
480 | struct wpa_ssid *ssid, int line, | |
481 | const char *value) | |
482 | { | |
483 | int val = 0, last, errors = 0; | |
484 | char *start, *end, *buf; | |
485 | ||
486 | buf = os_strdup(value); | |
487 | if (buf == NULL) | |
488 | return -1; | |
489 | start = buf; | |
490 | ||
491 | while (*start != '\0') { | |
492 | while (*start == ' ' || *start == '\t') | |
493 | start++; | |
494 | if (*start == '\0') | |
495 | break; | |
496 | end = start; | |
497 | while (*end != ' ' && *end != '\t' && *end != '\0') | |
498 | end++; | |
499 | last = *end == '\0'; | |
500 | *end = '\0'; | |
501 | if (os_strcmp(start, "WPA-PSK") == 0) | |
502 | val |= WPA_KEY_MGMT_PSK; | |
503 | else if (os_strcmp(start, "WPA-EAP") == 0) | |
504 | val |= WPA_KEY_MGMT_IEEE8021X; | |
505 | else if (os_strcmp(start, "IEEE8021X") == 0) | |
506 | val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA; | |
507 | else if (os_strcmp(start, "NONE") == 0) | |
508 | val |= WPA_KEY_MGMT_NONE; | |
509 | else if (os_strcmp(start, "WPA-NONE") == 0) | |
510 | val |= WPA_KEY_MGMT_WPA_NONE; | |
511 | #ifdef CONFIG_IEEE80211R | |
512 | else if (os_strcmp(start, "FT-PSK") == 0) | |
513 | val |= WPA_KEY_MGMT_FT_PSK; | |
514 | else if (os_strcmp(start, "FT-EAP") == 0) | |
515 | val |= WPA_KEY_MGMT_FT_IEEE8021X; | |
516 | #endif /* CONFIG_IEEE80211R */ | |
56586197 JM |
517 | #ifdef CONFIG_IEEE80211W |
518 | else if (os_strcmp(start, "WPA-PSK-SHA256") == 0) | |
519 | val |= WPA_KEY_MGMT_PSK_SHA256; | |
520 | else if (os_strcmp(start, "WPA-EAP-SHA256") == 0) | |
521 | val |= WPA_KEY_MGMT_IEEE8021X_SHA256; | |
522 | #endif /* CONFIG_IEEE80211W */ | |
ad08c363 JM |
523 | #ifdef CONFIG_WPS |
524 | else if (os_strcmp(start, "WPS") == 0) | |
525 | val |= WPA_KEY_MGMT_WPS; | |
526 | #endif /* CONFIG_WPS */ | |
6fc6879b JM |
527 | else { |
528 | wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'", | |
529 | line, start); | |
530 | errors++; | |
531 | } | |
532 | ||
533 | if (last) | |
534 | break; | |
535 | start = end + 1; | |
536 | } | |
537 | os_free(buf); | |
538 | ||
539 | if (val == 0) { | |
540 | wpa_printf(MSG_ERROR, | |
541 | "Line %d: no key_mgmt values configured.", line); | |
542 | errors++; | |
543 | } | |
544 | ||
545 | wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val); | |
546 | ssid->key_mgmt = val; | |
547 | return errors ? -1 : 0; | |
548 | } | |
549 | ||
550 | ||
551 | #ifndef NO_CONFIG_WRITE | |
552 | static char * wpa_config_write_key_mgmt(const struct parse_data *data, | |
553 | struct wpa_ssid *ssid) | |
554 | { | |
555 | char *buf, *pos, *end; | |
556 | int ret; | |
557 | ||
558 | pos = buf = os_zalloc(50); | |
559 | if (buf == NULL) | |
560 | return NULL; | |
561 | end = buf + 50; | |
562 | ||
563 | if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) { | |
564 | ret = os_snprintf(pos, end - pos, "%sWPA-PSK", | |
565 | pos == buf ? "" : " "); | |
566 | if (ret < 0 || ret >= end - pos) { | |
567 | end[-1] = '\0'; | |
568 | return buf; | |
569 | } | |
570 | pos += ret; | |
571 | } | |
572 | ||
573 | if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) { | |
574 | ret = os_snprintf(pos, end - pos, "%sWPA-EAP", | |
575 | pos == buf ? "" : " "); | |
576 | if (ret < 0 || ret >= end - pos) { | |
577 | end[-1] = '\0'; | |
578 | return buf; | |
579 | } | |
580 | pos += ret; | |
581 | } | |
582 | ||
583 | if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { | |
584 | ret = os_snprintf(pos, end - pos, "%sIEEE8021X", | |
585 | pos == buf ? "" : " "); | |
586 | if (ret < 0 || ret >= end - pos) { | |
587 | end[-1] = '\0'; | |
588 | return buf; | |
589 | } | |
590 | pos += ret; | |
591 | } | |
592 | ||
593 | if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) { | |
594 | ret = os_snprintf(pos, end - pos, "%sNONE", | |
595 | pos == buf ? "" : " "); | |
596 | if (ret < 0 || ret >= end - pos) { | |
597 | end[-1] = '\0'; | |
598 | return buf; | |
599 | } | |
600 | pos += ret; | |
601 | } | |
602 | ||
603 | if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) { | |
604 | ret = os_snprintf(pos, end - pos, "%sWPA-NONE", | |
605 | pos == buf ? "" : " "); | |
606 | if (ret < 0 || ret >= end - pos) { | |
607 | end[-1] = '\0'; | |
608 | return buf; | |
609 | } | |
610 | pos += ret; | |
611 | } | |
612 | ||
613 | #ifdef CONFIG_IEEE80211R | |
614 | if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK) | |
615 | pos += os_snprintf(pos, end - pos, "%sFT-PSK", | |
616 | pos == buf ? "" : " "); | |
617 | ||
618 | if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) | |
619 | pos += os_snprintf(pos, end - pos, "%sFT-EAP", | |
620 | pos == buf ? "" : " "); | |
621 | #endif /* CONFIG_IEEE80211R */ | |
622 | ||
56586197 JM |
623 | #ifdef CONFIG_IEEE80211W |
624 | if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256) | |
625 | pos += os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256", | |
626 | pos == buf ? "" : " "); | |
627 | ||
628 | if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) | |
629 | pos += os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256", | |
630 | pos == buf ? "" : " "); | |
631 | #endif /* CONFIG_IEEE80211W */ | |
632 | ||
728fae16 JM |
633 | #ifdef CONFIG_WPS |
634 | if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) | |
635 | pos += os_snprintf(pos, end - pos, "%sWPS", | |
636 | pos == buf ? "" : " "); | |
637 | #endif /* CONFIG_WPS */ | |
638 | ||
6fc6879b JM |
639 | return buf; |
640 | } | |
641 | #endif /* NO_CONFIG_WRITE */ | |
642 | ||
643 | ||
644 | static int wpa_config_parse_cipher(int line, const char *value) | |
645 | { | |
646 | int val = 0, last; | |
647 | char *start, *end, *buf; | |
648 | ||
649 | buf = os_strdup(value); | |
650 | if (buf == NULL) | |
651 | return -1; | |
652 | start = buf; | |
653 | ||
654 | while (*start != '\0') { | |
655 | while (*start == ' ' || *start == '\t') | |
656 | start++; | |
657 | if (*start == '\0') | |
658 | break; | |
659 | end = start; | |
660 | while (*end != ' ' && *end != '\t' && *end != '\0') | |
661 | end++; | |
662 | last = *end == '\0'; | |
663 | *end = '\0'; | |
664 | if (os_strcmp(start, "CCMP") == 0) | |
665 | val |= WPA_CIPHER_CCMP; | |
666 | else if (os_strcmp(start, "TKIP") == 0) | |
667 | val |= WPA_CIPHER_TKIP; | |
668 | else if (os_strcmp(start, "WEP104") == 0) | |
669 | val |= WPA_CIPHER_WEP104; | |
670 | else if (os_strcmp(start, "WEP40") == 0) | |
671 | val |= WPA_CIPHER_WEP40; | |
672 | else if (os_strcmp(start, "NONE") == 0) | |
673 | val |= WPA_CIPHER_NONE; | |
674 | else { | |
675 | wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.", | |
676 | line, start); | |
677 | os_free(buf); | |
678 | return -1; | |
679 | } | |
680 | ||
681 | if (last) | |
682 | break; | |
683 | start = end + 1; | |
684 | } | |
685 | os_free(buf); | |
686 | ||
687 | if (val == 0) { | |
688 | wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.", | |
689 | line); | |
690 | return -1; | |
691 | } | |
692 | return val; | |
693 | } | |
694 | ||
695 | ||
696 | #ifndef NO_CONFIG_WRITE | |
697 | static char * wpa_config_write_cipher(int cipher) | |
698 | { | |
699 | char *buf, *pos, *end; | |
700 | int ret; | |
701 | ||
702 | pos = buf = os_zalloc(50); | |
703 | if (buf == NULL) | |
704 | return NULL; | |
705 | end = buf + 50; | |
706 | ||
707 | if (cipher & WPA_CIPHER_CCMP) { | |
708 | ret = os_snprintf(pos, end - pos, "%sCCMP", | |
709 | pos == buf ? "" : " "); | |
710 | if (ret < 0 || ret >= end - pos) { | |
711 | end[-1] = '\0'; | |
712 | return buf; | |
713 | } | |
714 | pos += ret; | |
715 | } | |
716 | ||
717 | if (cipher & WPA_CIPHER_TKIP) { | |
718 | ret = os_snprintf(pos, end - pos, "%sTKIP", | |
719 | pos == buf ? "" : " "); | |
720 | if (ret < 0 || ret >= end - pos) { | |
721 | end[-1] = '\0'; | |
722 | return buf; | |
723 | } | |
724 | pos += ret; | |
725 | } | |
726 | ||
727 | if (cipher & WPA_CIPHER_WEP104) { | |
728 | ret = os_snprintf(pos, end - pos, "%sWEP104", | |
729 | pos == buf ? "" : " "); | |
730 | if (ret < 0 || ret >= end - pos) { | |
731 | end[-1] = '\0'; | |
732 | return buf; | |
733 | } | |
734 | pos += ret; | |
735 | } | |
736 | ||
737 | if (cipher & WPA_CIPHER_WEP40) { | |
738 | ret = os_snprintf(pos, end - pos, "%sWEP40", | |
739 | pos == buf ? "" : " "); | |
740 | if (ret < 0 || ret >= end - pos) { | |
741 | end[-1] = '\0'; | |
742 | return buf; | |
743 | } | |
744 | pos += ret; | |
745 | } | |
746 | ||
747 | if (cipher & WPA_CIPHER_NONE) { | |
748 | ret = os_snprintf(pos, end - pos, "%sNONE", | |
749 | pos == buf ? "" : " "); | |
750 | if (ret < 0 || ret >= end - pos) { | |
751 | end[-1] = '\0'; | |
752 | return buf; | |
753 | } | |
754 | pos += ret; | |
755 | } | |
756 | ||
757 | return buf; | |
758 | } | |
759 | #endif /* NO_CONFIG_WRITE */ | |
760 | ||
761 | ||
762 | static int wpa_config_parse_pairwise(const struct parse_data *data, | |
763 | struct wpa_ssid *ssid, int line, | |
764 | const char *value) | |
765 | { | |
766 | int val; | |
767 | val = wpa_config_parse_cipher(line, value); | |
768 | if (val == -1) | |
769 | return -1; | |
770 | if (val & ~(WPA_CIPHER_CCMP | WPA_CIPHER_TKIP | WPA_CIPHER_NONE)) { | |
771 | wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher " | |
772 | "(0x%x).", line, val); | |
773 | return -1; | |
774 | } | |
775 | ||
776 | wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val); | |
777 | ssid->pairwise_cipher = val; | |
778 | return 0; | |
779 | } | |
780 | ||
781 | ||
782 | #ifndef NO_CONFIG_WRITE | |
783 | static char * wpa_config_write_pairwise(const struct parse_data *data, | |
784 | struct wpa_ssid *ssid) | |
785 | { | |
786 | return wpa_config_write_cipher(ssid->pairwise_cipher); | |
787 | } | |
788 | #endif /* NO_CONFIG_WRITE */ | |
789 | ||
790 | ||
791 | static int wpa_config_parse_group(const struct parse_data *data, | |
792 | struct wpa_ssid *ssid, int line, | |
793 | const char *value) | |
794 | { | |
795 | int val; | |
796 | val = wpa_config_parse_cipher(line, value); | |
797 | if (val == -1) | |
798 | return -1; | |
799 | if (val & ~(WPA_CIPHER_CCMP | WPA_CIPHER_TKIP | WPA_CIPHER_WEP104 | | |
800 | WPA_CIPHER_WEP40)) { | |
801 | wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher " | |
802 | "(0x%x).", line, val); | |
803 | return -1; | |
804 | } | |
805 | ||
806 | wpa_printf(MSG_MSGDUMP, "group: 0x%x", val); | |
807 | ssid->group_cipher = val; | |
808 | return 0; | |
809 | } | |
810 | ||
811 | ||
812 | #ifndef NO_CONFIG_WRITE | |
813 | static char * wpa_config_write_group(const struct parse_data *data, | |
814 | struct wpa_ssid *ssid) | |
815 | { | |
816 | return wpa_config_write_cipher(ssid->group_cipher); | |
817 | } | |
818 | #endif /* NO_CONFIG_WRITE */ | |
819 | ||
820 | ||
821 | static int wpa_config_parse_auth_alg(const struct parse_data *data, | |
822 | struct wpa_ssid *ssid, int line, | |
823 | const char *value) | |
824 | { | |
825 | int val = 0, last, errors = 0; | |
826 | char *start, *end, *buf; | |
827 | ||
828 | buf = os_strdup(value); | |
829 | if (buf == NULL) | |
830 | return -1; | |
831 | start = buf; | |
832 | ||
833 | while (*start != '\0') { | |
834 | while (*start == ' ' || *start == '\t') | |
835 | start++; | |
836 | if (*start == '\0') | |
837 | break; | |
838 | end = start; | |
839 | while (*end != ' ' && *end != '\t' && *end != '\0') | |
840 | end++; | |
841 | last = *end == '\0'; | |
842 | *end = '\0'; | |
843 | if (os_strcmp(start, "OPEN") == 0) | |
844 | val |= WPA_AUTH_ALG_OPEN; | |
845 | else if (os_strcmp(start, "SHARED") == 0) | |
846 | val |= WPA_AUTH_ALG_SHARED; | |
847 | else if (os_strcmp(start, "LEAP") == 0) | |
848 | val |= WPA_AUTH_ALG_LEAP; | |
849 | else { | |
850 | wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'", | |
851 | line, start); | |
852 | errors++; | |
853 | } | |
854 | ||
855 | if (last) | |
856 | break; | |
857 | start = end + 1; | |
858 | } | |
859 | os_free(buf); | |
860 | ||
861 | if (val == 0) { | |
862 | wpa_printf(MSG_ERROR, | |
863 | "Line %d: no auth_alg values configured.", line); | |
864 | errors++; | |
865 | } | |
866 | ||
867 | wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val); | |
868 | ssid->auth_alg = val; | |
869 | return errors ? -1 : 0; | |
870 | } | |
871 | ||
872 | ||
873 | #ifndef NO_CONFIG_WRITE | |
874 | static char * wpa_config_write_auth_alg(const struct parse_data *data, | |
875 | struct wpa_ssid *ssid) | |
876 | { | |
877 | char *buf, *pos, *end; | |
878 | int ret; | |
879 | ||
880 | pos = buf = os_zalloc(30); | |
881 | if (buf == NULL) | |
882 | return NULL; | |
883 | end = buf + 30; | |
884 | ||
885 | if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) { | |
886 | ret = os_snprintf(pos, end - pos, "%sOPEN", | |
887 | pos == buf ? "" : " "); | |
888 | if (ret < 0 || ret >= end - pos) { | |
889 | end[-1] = '\0'; | |
890 | return buf; | |
891 | } | |
892 | pos += ret; | |
893 | } | |
894 | ||
895 | if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) { | |
896 | ret = os_snprintf(pos, end - pos, "%sSHARED", | |
897 | pos == buf ? "" : " "); | |
898 | if (ret < 0 || ret >= end - pos) { | |
899 | end[-1] = '\0'; | |
900 | return buf; | |
901 | } | |
902 | pos += ret; | |
903 | } | |
904 | ||
905 | if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) { | |
906 | ret = os_snprintf(pos, end - pos, "%sLEAP", | |
907 | pos == buf ? "" : " "); | |
908 | if (ret < 0 || ret >= end - pos) { | |
909 | end[-1] = '\0'; | |
910 | return buf; | |
911 | } | |
912 | pos += ret; | |
913 | } | |
914 | ||
915 | return buf; | |
916 | } | |
917 | #endif /* NO_CONFIG_WRITE */ | |
918 | ||
919 | ||
d3a98225 JM |
920 | static int wpa_config_parse_scan_freq(const struct parse_data *data, |
921 | struct wpa_ssid *ssid, int line, | |
922 | const char *value) | |
923 | { | |
924 | int *freqs; | |
925 | size_t used, len; | |
926 | const char *pos; | |
927 | ||
928 | used = 0; | |
929 | len = 10; | |
930 | freqs = os_zalloc((len + 1) * sizeof(int)); | |
931 | if (freqs == NULL) | |
932 | return -1; | |
933 | ||
934 | pos = value; | |
935 | while (pos) { | |
936 | while (*pos == ' ') | |
937 | pos++; | |
938 | if (used == len) { | |
939 | int *n; | |
940 | size_t i; | |
941 | n = os_realloc(freqs, (len * 2 + 1) * sizeof(int)); | |
942 | if (n == NULL) { | |
943 | os_free(freqs); | |
944 | return -1; | |
945 | } | |
946 | for (i = len; i <= len * 2; i++) | |
947 | n[i] = 0; | |
948 | freqs = n; | |
949 | len *= 2; | |
950 | } | |
951 | ||
952 | freqs[used] = atoi(pos); | |
953 | if (freqs[used] == 0) | |
954 | break; | |
955 | used++; | |
956 | pos = os_strchr(pos + 1, ' '); | |
957 | } | |
958 | ||
959 | os_free(ssid->scan_freq); | |
960 | ssid->scan_freq = freqs; | |
961 | ||
962 | return 0; | |
963 | } | |
964 | ||
965 | ||
966 | #ifndef NO_CONFIG_WRITE | |
967 | static char * wpa_config_write_scan_freq(const struct parse_data *data, | |
968 | struct wpa_ssid *ssid) | |
969 | { | |
970 | char *buf, *pos, *end; | |
971 | int i, ret; | |
972 | size_t count; | |
973 | ||
974 | if (ssid->scan_freq == NULL) | |
975 | return NULL; | |
976 | ||
977 | count = 0; | |
978 | for (i = 0; ssid->scan_freq[i]; i++) | |
979 | count++; | |
980 | ||
981 | pos = buf = os_zalloc(10 * count + 1); | |
982 | if (buf == NULL) | |
983 | return NULL; | |
984 | end = buf + 10 * count + 1; | |
985 | ||
986 | for (i = 0; ssid->scan_freq[i]; i++) { | |
987 | ret = os_snprintf(pos, end - pos, "%s%u", | |
988 | i == 0 ? "" : " ", ssid->scan_freq[i]); | |
989 | if (ret < 0 || ret >= end - pos) { | |
990 | end[-1] = '\0'; | |
991 | return buf; | |
992 | } | |
993 | pos += ret; | |
994 | } | |
995 | ||
996 | return buf; | |
997 | } | |
998 | #endif /* NO_CONFIG_WRITE */ | |
999 | ||
1000 | ||
6fc6879b JM |
1001 | #ifdef IEEE8021X_EAPOL |
1002 | static int wpa_config_parse_eap(const struct parse_data *data, | |
1003 | struct wpa_ssid *ssid, int line, | |
1004 | const char *value) | |
1005 | { | |
1006 | int last, errors = 0; | |
1007 | char *start, *end, *buf; | |
1008 | struct eap_method_type *methods = NULL, *tmp; | |
1009 | size_t num_methods = 0; | |
1010 | ||
1011 | buf = os_strdup(value); | |
1012 | if (buf == NULL) | |
1013 | return -1; | |
1014 | start = buf; | |
1015 | ||
1016 | while (*start != '\0') { | |
1017 | while (*start == ' ' || *start == '\t') | |
1018 | start++; | |
1019 | if (*start == '\0') | |
1020 | break; | |
1021 | end = start; | |
1022 | while (*end != ' ' && *end != '\t' && *end != '\0') | |
1023 | end++; | |
1024 | last = *end == '\0'; | |
1025 | *end = '\0'; | |
1026 | tmp = methods; | |
1027 | methods = os_realloc(methods, | |
1028 | (num_methods + 1) * sizeof(*methods)); | |
1029 | if (methods == NULL) { | |
1030 | os_free(tmp); | |
1031 | os_free(buf); | |
1032 | return -1; | |
1033 | } | |
1034 | methods[num_methods].method = eap_peer_get_type( | |
1035 | start, &methods[num_methods].vendor); | |
1036 | if (methods[num_methods].vendor == EAP_VENDOR_IETF && | |
1037 | methods[num_methods].method == EAP_TYPE_NONE) { | |
1038 | wpa_printf(MSG_ERROR, "Line %d: unknown EAP method " | |
1039 | "'%s'", line, start); | |
1040 | wpa_printf(MSG_ERROR, "You may need to add support for" | |
1041 | " this EAP method during wpa_supplicant\n" | |
1042 | "build time configuration.\n" | |
1043 | "See README for more information."); | |
1044 | errors++; | |
1045 | } else if (methods[num_methods].vendor == EAP_VENDOR_IETF && | |
1046 | methods[num_methods].method == EAP_TYPE_LEAP) | |
1047 | ssid->leap++; | |
1048 | else | |
1049 | ssid->non_leap++; | |
1050 | num_methods++; | |
1051 | if (last) | |
1052 | break; | |
1053 | start = end + 1; | |
1054 | } | |
1055 | os_free(buf); | |
1056 | ||
1057 | tmp = methods; | |
1058 | methods = os_realloc(methods, (num_methods + 1) * sizeof(*methods)); | |
1059 | if (methods == NULL) { | |
1060 | os_free(tmp); | |
1061 | return -1; | |
1062 | } | |
1063 | methods[num_methods].vendor = EAP_VENDOR_IETF; | |
1064 | methods[num_methods].method = EAP_TYPE_NONE; | |
1065 | num_methods++; | |
1066 | ||
1067 | wpa_hexdump(MSG_MSGDUMP, "eap methods", | |
1068 | (u8 *) methods, num_methods * sizeof(*methods)); | |
1069 | ssid->eap.eap_methods = methods; | |
1070 | return errors ? -1 : 0; | |
1071 | } | |
1072 | ||
1073 | ||
1074 | static char * wpa_config_write_eap(const struct parse_data *data, | |
1075 | struct wpa_ssid *ssid) | |
1076 | { | |
1077 | int i, ret; | |
1078 | char *buf, *pos, *end; | |
1079 | const struct eap_method_type *eap_methods = ssid->eap.eap_methods; | |
1080 | const char *name; | |
1081 | ||
1082 | if (eap_methods == NULL) | |
1083 | return NULL; | |
1084 | ||
1085 | pos = buf = os_zalloc(100); | |
1086 | if (buf == NULL) | |
1087 | return NULL; | |
1088 | end = buf + 100; | |
1089 | ||
1090 | for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF || | |
1091 | eap_methods[i].method != EAP_TYPE_NONE; i++) { | |
1092 | name = eap_get_name(eap_methods[i].vendor, | |
1093 | eap_methods[i].method); | |
1094 | if (name) { | |
1095 | ret = os_snprintf(pos, end - pos, "%s%s", | |
1096 | pos == buf ? "" : " ", name); | |
1097 | if (ret < 0 || ret >= end - pos) | |
1098 | break; | |
1099 | pos += ret; | |
1100 | } | |
1101 | } | |
1102 | ||
1103 | end[-1] = '\0'; | |
1104 | ||
1105 | return buf; | |
1106 | } | |
1107 | ||
1108 | ||
1109 | static int wpa_config_parse_password(const struct parse_data *data, | |
1110 | struct wpa_ssid *ssid, int line, | |
1111 | const char *value) | |
1112 | { | |
1113 | u8 *hash; | |
1114 | ||
b56c0546 JM |
1115 | if (os_strcmp(value, "NULL") == 0) { |
1116 | wpa_printf(MSG_DEBUG, "Unset configuration string 'password'"); | |
1117 | os_free(ssid->eap.password); | |
1118 | ssid->eap.password = NULL; | |
1119 | ssid->eap.password_len = 0; | |
1120 | return 0; | |
1121 | } | |
1122 | ||
6fc6879b JM |
1123 | if (os_strncmp(value, "hash:", 5) != 0) { |
1124 | char *tmp; | |
1125 | size_t res_len; | |
1126 | ||
1127 | tmp = wpa_config_parse_string(value, &res_len); | |
1128 | if (tmp == NULL) { | |
1129 | wpa_printf(MSG_ERROR, "Line %d: failed to parse " | |
1130 | "password.", line); | |
1131 | return -1; | |
1132 | } | |
556f5a2a HS |
1133 | wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name, |
1134 | (u8 *) tmp, res_len); | |
6fc6879b JM |
1135 | |
1136 | os_free(ssid->eap.password); | |
1137 | ssid->eap.password = (u8 *) tmp; | |
1138 | ssid->eap.password_len = res_len; | |
1139 | ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH; | |
1140 | ||
1141 | return 0; | |
1142 | } | |
1143 | ||
1144 | ||
1145 | /* NtPasswordHash: hash:<32 hex digits> */ | |
1146 | if (os_strlen(value + 5) != 2 * 16) { | |
1147 | wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length " | |
1148 | "(expected 32 hex digits)", line); | |
1149 | return -1; | |
1150 | } | |
1151 | ||
1152 | hash = os_malloc(16); | |
1153 | if (hash == NULL) | |
1154 | return -1; | |
1155 | ||
1156 | if (hexstr2bin(value + 5, hash, 16)) { | |
1157 | os_free(hash); | |
1158 | wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line); | |
1159 | return -1; | |
1160 | } | |
1161 | ||
1162 | wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16); | |
1163 | ||
1164 | os_free(ssid->eap.password); | |
1165 | ssid->eap.password = hash; | |
1166 | ssid->eap.password_len = 16; | |
1167 | ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH; | |
1168 | ||
1169 | return 0; | |
1170 | } | |
1171 | ||
1172 | ||
1173 | static char * wpa_config_write_password(const struct parse_data *data, | |
1174 | struct wpa_ssid *ssid) | |
1175 | { | |
1176 | char *buf; | |
1177 | ||
1178 | if (ssid->eap.password == NULL) | |
1179 | return NULL; | |
1180 | ||
1181 | if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) { | |
1182 | return wpa_config_write_string( | |
1183 | ssid->eap.password, ssid->eap.password_len); | |
1184 | } | |
1185 | ||
1186 | buf = os_malloc(5 + 32 + 1); | |
1187 | if (buf == NULL) | |
1188 | return NULL; | |
1189 | ||
1190 | os_memcpy(buf, "hash:", 5); | |
1191 | wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16); | |
1192 | ||
1193 | return buf; | |
1194 | } | |
1195 | #endif /* IEEE8021X_EAPOL */ | |
1196 | ||
1197 | ||
1198 | static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line, | |
1199 | const char *value, int idx) | |
1200 | { | |
1201 | char *buf, title[20]; | |
1202 | int res; | |
1203 | ||
1204 | buf = wpa_config_parse_string(value, len); | |
1205 | if (buf == NULL) { | |
1206 | wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.", | |
1207 | line, idx, value); | |
1208 | return -1; | |
1209 | } | |
1210 | if (*len > MAX_WEP_KEY_LEN) { | |
1211 | wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.", | |
1212 | line, idx, value); | |
1213 | os_free(buf); | |
1214 | return -1; | |
1215 | } | |
1216 | os_memcpy(key, buf, *len); | |
1217 | os_free(buf); | |
1218 | res = os_snprintf(title, sizeof(title), "wep_key%d", idx); | |
1219 | if (res >= 0 && (size_t) res < sizeof(title)) | |
1220 | wpa_hexdump_key(MSG_MSGDUMP, title, key, *len); | |
1221 | return 0; | |
1222 | } | |
1223 | ||
1224 | ||
1225 | static int wpa_config_parse_wep_key0(const struct parse_data *data, | |
1226 | struct wpa_ssid *ssid, int line, | |
1227 | const char *value) | |
1228 | { | |
1229 | return wpa_config_parse_wep_key(ssid->wep_key[0], | |
1230 | &ssid->wep_key_len[0], line, | |
1231 | value, 0); | |
1232 | } | |
1233 | ||
1234 | ||
1235 | static int wpa_config_parse_wep_key1(const struct parse_data *data, | |
1236 | struct wpa_ssid *ssid, int line, | |
1237 | const char *value) | |
1238 | { | |
1239 | return wpa_config_parse_wep_key(ssid->wep_key[1], | |
1240 | &ssid->wep_key_len[1], line, | |
1241 | value, 1); | |
1242 | } | |
1243 | ||
1244 | ||
1245 | static int wpa_config_parse_wep_key2(const struct parse_data *data, | |
1246 | struct wpa_ssid *ssid, int line, | |
1247 | const char *value) | |
1248 | { | |
1249 | return wpa_config_parse_wep_key(ssid->wep_key[2], | |
1250 | &ssid->wep_key_len[2], line, | |
1251 | value, 2); | |
1252 | } | |
1253 | ||
1254 | ||
1255 | static int wpa_config_parse_wep_key3(const struct parse_data *data, | |
1256 | struct wpa_ssid *ssid, int line, | |
1257 | const char *value) | |
1258 | { | |
1259 | return wpa_config_parse_wep_key(ssid->wep_key[3], | |
1260 | &ssid->wep_key_len[3], line, | |
1261 | value, 3); | |
1262 | } | |
1263 | ||
1264 | ||
1265 | #ifndef NO_CONFIG_WRITE | |
1266 | static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx) | |
1267 | { | |
1268 | if (ssid->wep_key_len[idx] == 0) | |
1269 | return NULL; | |
1270 | return wpa_config_write_string(ssid->wep_key[idx], | |
1271 | ssid->wep_key_len[idx]); | |
1272 | } | |
1273 | ||
1274 | ||
1275 | static char * wpa_config_write_wep_key0(const struct parse_data *data, | |
1276 | struct wpa_ssid *ssid) | |
1277 | { | |
1278 | return wpa_config_write_wep_key(ssid, 0); | |
1279 | } | |
1280 | ||
1281 | ||
1282 | static char * wpa_config_write_wep_key1(const struct parse_data *data, | |
1283 | struct wpa_ssid *ssid) | |
1284 | { | |
1285 | return wpa_config_write_wep_key(ssid, 1); | |
1286 | } | |
1287 | ||
1288 | ||
1289 | static char * wpa_config_write_wep_key2(const struct parse_data *data, | |
1290 | struct wpa_ssid *ssid) | |
1291 | { | |
1292 | return wpa_config_write_wep_key(ssid, 2); | |
1293 | } | |
1294 | ||
1295 | ||
1296 | static char * wpa_config_write_wep_key3(const struct parse_data *data, | |
1297 | struct wpa_ssid *ssid) | |
1298 | { | |
1299 | return wpa_config_write_wep_key(ssid, 3); | |
1300 | } | |
1301 | #endif /* NO_CONFIG_WRITE */ | |
1302 | ||
1303 | ||
1304 | /* Helper macros for network block parser */ | |
1305 | ||
1306 | #ifdef OFFSET | |
1307 | #undef OFFSET | |
1308 | #endif /* OFFSET */ | |
1309 | /* OFFSET: Get offset of a variable within the wpa_ssid structure */ | |
1310 | #define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v) | |
1311 | ||
1312 | /* STR: Define a string variable for an ASCII string; f = field name */ | |
1313 | #ifdef NO_CONFIG_WRITE | |
1314 | #define _STR(f) #f, wpa_config_parse_str, OFFSET(f) | |
1315 | #define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f) | |
1316 | #else /* NO_CONFIG_WRITE */ | |
1317 | #define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f) | |
1318 | #define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f) | |
1319 | #endif /* NO_CONFIG_WRITE */ | |
1320 | #define STR(f) _STR(f), NULL, NULL, NULL, 0 | |
1321 | #define STRe(f) _STRe(f), NULL, NULL, NULL, 0 | |
1322 | #define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1 | |
1323 | #define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1 | |
1324 | ||
1325 | /* STR_LEN: Define a string variable with a separate variable for storing the | |
1326 | * data length. Unlike STR(), this can be used to store arbitrary binary data | |
1327 | * (i.e., even nul termination character). */ | |
1328 | #define _STR_LEN(f) _STR(f), OFFSET(f ## _len) | |
1329 | #define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len) | |
1330 | #define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0 | |
1331 | #define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0 | |
1332 | #define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1 | |
1333 | ||
1334 | /* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length | |
1335 | * explicitly specified. */ | |
1336 | #define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max) | |
1337 | #define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0 | |
1338 | #define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1 | |
1339 | ||
1340 | #ifdef NO_CONFIG_WRITE | |
1341 | #define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0 | |
1342 | #define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0 | |
1343 | #else /* NO_CONFIG_WRITE */ | |
1344 | #define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \ | |
1345 | OFFSET(f), (void *) 0 | |
1346 | #define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \ | |
1347 | OFFSET(eap.f), (void *) 0 | |
1348 | #endif /* NO_CONFIG_WRITE */ | |
1349 | ||
1350 | /* INT: Define an integer variable */ | |
1351 | #define INT(f) _INT(f), NULL, NULL, 0 | |
1352 | #define INTe(f) _INTe(f), NULL, NULL, 0 | |
1353 | ||
1354 | /* INT_RANGE: Define an integer variable with allowed value range */ | |
1355 | #define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0 | |
1356 | ||
1357 | /* FUNC: Define a configuration variable that uses a custom function for | |
1358 | * parsing and writing the value. */ | |
1359 | #ifdef NO_CONFIG_WRITE | |
1360 | #define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL | |
1361 | #else /* NO_CONFIG_WRITE */ | |
1362 | #define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \ | |
1363 | NULL, NULL, NULL, NULL | |
1364 | #endif /* NO_CONFIG_WRITE */ | |
1365 | #define FUNC(f) _FUNC(f), 0 | |
1366 | #define FUNC_KEY(f) _FUNC(f), 1 | |
1367 | ||
1368 | /* | |
1369 | * Table of network configuration variables. This table is used to parse each | |
1370 | * network configuration variable, e.g., each line in wpa_supplicant.conf file | |
1371 | * that is inside a network block. | |
1372 | * | |
1373 | * This table is generated using the helper macros defined above and with | |
1374 | * generous help from the C pre-processor. The field name is stored as a string | |
1375 | * into .name and for STR and INT types, the offset of the target buffer within | |
1376 | * struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar | |
1377 | * offset to the field containing the length of the configuration variable. | |
1378 | * .param3 and .param4 can be used to mark the allowed range (length for STR | |
1379 | * and value for INT). | |
1380 | * | |
1381 | * For each configuration line in wpa_supplicant.conf, the parser goes through | |
1382 | * this table and select the entry that matches with the field name. The parser | |
1383 | * function (.parser) is then called to parse the actual value of the field. | |
1384 | * | |
1385 | * This kind of mechanism makes it easy to add new configuration parameters, | |
1386 | * since only one line needs to be added into this table and into the | |
1387 | * struct wpa_ssid definition if the new variable is either a string or | |
1388 | * integer. More complex types will need to use their own parser and writer | |
1389 | * functions. | |
1390 | */ | |
1391 | static const struct parse_data ssid_fields[] = { | |
1392 | { STR_RANGE(ssid, 0, MAX_SSID_LEN) }, | |
1393 | { INT_RANGE(scan_ssid, 0, 1) }, | |
1394 | { FUNC(bssid) }, | |
1395 | { FUNC_KEY(psk) }, | |
1396 | { FUNC(proto) }, | |
1397 | { FUNC(key_mgmt) }, | |
1398 | { FUNC(pairwise) }, | |
1399 | { FUNC(group) }, | |
1400 | { FUNC(auth_alg) }, | |
d3a98225 | 1401 | { FUNC(scan_freq) }, |
6fc6879b JM |
1402 | #ifdef IEEE8021X_EAPOL |
1403 | { FUNC(eap) }, | |
1404 | { STR_LENe(identity) }, | |
1405 | { STR_LENe(anonymous_identity) }, | |
556f5a2a | 1406 | { FUNC_KEY(password) }, |
6fc6879b JM |
1407 | { STRe(ca_cert) }, |
1408 | { STRe(ca_path) }, | |
1409 | { STRe(client_cert) }, | |
1410 | { STRe(private_key) }, | |
1411 | { STR_KEYe(private_key_passwd) }, | |
1412 | { STRe(dh_file) }, | |
1413 | { STRe(subject_match) }, | |
1414 | { STRe(altsubject_match) }, | |
1415 | { STRe(ca_cert2) }, | |
1416 | { STRe(ca_path2) }, | |
1417 | { STRe(client_cert2) }, | |
1418 | { STRe(private_key2) }, | |
1419 | { STR_KEYe(private_key2_passwd) }, | |
1420 | { STRe(dh_file2) }, | |
1421 | { STRe(subject_match2) }, | |
1422 | { STRe(altsubject_match2) }, | |
1423 | { STRe(phase1) }, | |
1424 | { STRe(phase2) }, | |
1425 | { STRe(pcsc) }, | |
1426 | { STR_KEYe(pin) }, | |
1427 | { STRe(engine_id) }, | |
1428 | { STRe(key_id) }, | |
61ee0f71 DS |
1429 | { STRe(cert_id) }, |
1430 | { STRe(ca_cert_id) }, | |
98842d51 CL |
1431 | { STR_KEYe(pin2) }, |
1432 | { STRe(engine2_id) }, | |
61ee0f71 DS |
1433 | { STRe(key2_id) }, |
1434 | { STRe(cert2_id) }, | |
1435 | { STRe(ca_cert2_id) }, | |
6fc6879b | 1436 | { INTe(engine) }, |
98842d51 | 1437 | { INTe(engine2) }, |
6fc6879b JM |
1438 | { INT(eapol_flags) }, |
1439 | #endif /* IEEE8021X_EAPOL */ | |
1440 | { FUNC_KEY(wep_key0) }, | |
1441 | { FUNC_KEY(wep_key1) }, | |
1442 | { FUNC_KEY(wep_key2) }, | |
1443 | { FUNC_KEY(wep_key3) }, | |
1444 | { INT(wep_tx_keyidx) }, | |
1445 | { INT(priority) }, | |
1446 | #ifdef IEEE8021X_EAPOL | |
1447 | { INT(eap_workaround) }, | |
1448 | { STRe(pac_file) }, | |
1449 | { INTe(fragment_size) }, | |
1450 | #endif /* IEEE8021X_EAPOL */ | |
1581b38b | 1451 | { INT_RANGE(mode, 0, 2) }, |
6fc6879b JM |
1452 | { INT_RANGE(proactive_key_caching, 0, 1) }, |
1453 | { INT_RANGE(disabled, 0, 1) }, | |
1454 | { STR(id_str) }, | |
1455 | #ifdef CONFIG_IEEE80211W | |
1456 | { INT_RANGE(ieee80211w, 0, 2) }, | |
1457 | #endif /* CONFIG_IEEE80211W */ | |
1458 | { INT_RANGE(peerkey, 0, 1) }, | |
1459 | { INT_RANGE(mixed_cell, 0, 1) }, | |
581a8cde | 1460 | { INT_RANGE(frequency, 0, 10000) }, |
60b94c98 JM |
1461 | { INT(wpa_ptk_rekey) }, |
1462 | { STR(bgscan) }, | |
6fc6879b JM |
1463 | }; |
1464 | ||
1465 | #undef OFFSET | |
1466 | #undef _STR | |
1467 | #undef STR | |
1468 | #undef STR_KEY | |
1469 | #undef _STR_LEN | |
1470 | #undef STR_LEN | |
1471 | #undef STR_LEN_KEY | |
1472 | #undef _STR_RANGE | |
1473 | #undef STR_RANGE | |
1474 | #undef STR_RANGE_KEY | |
1475 | #undef _INT | |
1476 | #undef INT | |
1477 | #undef INT_RANGE | |
1478 | #undef _FUNC | |
1479 | #undef FUNC | |
1480 | #undef FUNC_KEY | |
1481 | #define NUM_SSID_FIELDS (sizeof(ssid_fields) / sizeof(ssid_fields[0])) | |
1482 | ||
1483 | ||
1484 | /** | |
1485 | * wpa_config_add_prio_network - Add a network to priority lists | |
1486 | * @config: Configuration data from wpa_config_read() | |
1487 | * @ssid: Pointer to the network configuration to be added to the list | |
1488 | * Returns: 0 on success, -1 on failure | |
1489 | * | |
1490 | * This function is used to add a network block to the priority list of | |
1491 | * networks. This must be called for each network when reading in the full | |
1492 | * configuration. In addition, this can be used indirectly when updating | |
1493 | * priorities by calling wpa_config_update_prio_list(). | |
1494 | */ | |
1495 | int wpa_config_add_prio_network(struct wpa_config *config, | |
1496 | struct wpa_ssid *ssid) | |
1497 | { | |
1498 | int prio; | |
1499 | struct wpa_ssid *prev, **nlist; | |
1500 | ||
1501 | /* | |
1502 | * Add to an existing priority list if one is available for the | |
1503 | * configured priority level for this network. | |
1504 | */ | |
1505 | for (prio = 0; prio < config->num_prio; prio++) { | |
1506 | prev = config->pssid[prio]; | |
1507 | if (prev->priority == ssid->priority) { | |
1508 | while (prev->pnext) | |
1509 | prev = prev->pnext; | |
1510 | prev->pnext = ssid; | |
1511 | return 0; | |
1512 | } | |
1513 | } | |
1514 | ||
1515 | /* First network for this priority - add a new priority list */ | |
1516 | nlist = os_realloc(config->pssid, | |
1517 | (config->num_prio + 1) * sizeof(struct wpa_ssid *)); | |
1518 | if (nlist == NULL) | |
1519 | return -1; | |
1520 | ||
1521 | for (prio = 0; prio < config->num_prio; prio++) { | |
1522 | if (nlist[prio]->priority < ssid->priority) | |
1523 | break; | |
1524 | } | |
1525 | ||
1526 | os_memmove(&nlist[prio + 1], &nlist[prio], | |
1527 | (config->num_prio - prio) * sizeof(struct wpa_ssid *)); | |
1528 | ||
1529 | nlist[prio] = ssid; | |
1530 | config->num_prio++; | |
1531 | config->pssid = nlist; | |
1532 | ||
1533 | return 0; | |
1534 | } | |
1535 | ||
1536 | ||
1537 | /** | |
1538 | * wpa_config_update_prio_list - Update network priority list | |
1539 | * @config: Configuration data from wpa_config_read() | |
1540 | * Returns: 0 on success, -1 on failure | |
1541 | * | |
1542 | * This function is called to update the priority list of networks in the | |
1543 | * configuration when a network is being added or removed. This is also called | |
1544 | * if a priority for a network is changed. | |
1545 | */ | |
1546 | static int wpa_config_update_prio_list(struct wpa_config *config) | |
1547 | { | |
1548 | struct wpa_ssid *ssid; | |
1549 | int ret = 0; | |
1550 | ||
1551 | os_free(config->pssid); | |
1552 | config->pssid = NULL; | |
1553 | config->num_prio = 0; | |
1554 | ||
1555 | ssid = config->ssid; | |
1556 | while (ssid) { | |
1557 | ssid->pnext = NULL; | |
1558 | if (wpa_config_add_prio_network(config, ssid) < 0) | |
1559 | ret = -1; | |
1560 | ssid = ssid->next; | |
1561 | } | |
1562 | ||
1563 | return ret; | |
1564 | } | |
1565 | ||
1566 | ||
1567 | #ifdef IEEE8021X_EAPOL | |
1568 | static void eap_peer_config_free(struct eap_peer_config *eap) | |
1569 | { | |
1570 | os_free(eap->eap_methods); | |
1571 | os_free(eap->identity); | |
1572 | os_free(eap->anonymous_identity); | |
1573 | os_free(eap->password); | |
1574 | os_free(eap->ca_cert); | |
1575 | os_free(eap->ca_path); | |
1576 | os_free(eap->client_cert); | |
1577 | os_free(eap->private_key); | |
1578 | os_free(eap->private_key_passwd); | |
1579 | os_free(eap->dh_file); | |
1580 | os_free(eap->subject_match); | |
1581 | os_free(eap->altsubject_match); | |
1582 | os_free(eap->ca_cert2); | |
1583 | os_free(eap->ca_path2); | |
1584 | os_free(eap->client_cert2); | |
1585 | os_free(eap->private_key2); | |
1586 | os_free(eap->private_key2_passwd); | |
1587 | os_free(eap->dh_file2); | |
1588 | os_free(eap->subject_match2); | |
1589 | os_free(eap->altsubject_match2); | |
1590 | os_free(eap->phase1); | |
1591 | os_free(eap->phase2); | |
1592 | os_free(eap->pcsc); | |
1593 | os_free(eap->pin); | |
1594 | os_free(eap->engine_id); | |
1595 | os_free(eap->key_id); | |
61ee0f71 DS |
1596 | os_free(eap->cert_id); |
1597 | os_free(eap->ca_cert_id); | |
1598 | os_free(eap->key2_id); | |
1599 | os_free(eap->cert2_id); | |
1600 | os_free(eap->ca_cert2_id); | |
98842d51 CL |
1601 | os_free(eap->pin2); |
1602 | os_free(eap->engine2_id); | |
6fc6879b JM |
1603 | os_free(eap->otp); |
1604 | os_free(eap->pending_req_otp); | |
1605 | os_free(eap->pac_file); | |
1606 | os_free(eap->new_password); | |
1607 | } | |
1608 | #endif /* IEEE8021X_EAPOL */ | |
1609 | ||
1610 | ||
1611 | /** | |
1612 | * wpa_config_free_ssid - Free network/ssid configuration data | |
1613 | * @ssid: Configuration data for the network | |
1614 | * | |
1615 | * This function frees all resources allocated for the network configuration | |
1616 | * data. | |
1617 | */ | |
1618 | void wpa_config_free_ssid(struct wpa_ssid *ssid) | |
1619 | { | |
1620 | os_free(ssid->ssid); | |
1621 | os_free(ssid->passphrase); | |
1622 | #ifdef IEEE8021X_EAPOL | |
1623 | eap_peer_config_free(&ssid->eap); | |
1624 | #endif /* IEEE8021X_EAPOL */ | |
1625 | os_free(ssid->id_str); | |
d3a98225 | 1626 | os_free(ssid->scan_freq); |
60b94c98 | 1627 | os_free(ssid->bgscan); |
6fc6879b JM |
1628 | os_free(ssid); |
1629 | } | |
1630 | ||
1631 | ||
1632 | /** | |
1633 | * wpa_config_free - Free configuration data | |
1634 | * @config: Configuration data from wpa_config_read() | |
1635 | * | |
1636 | * This function frees all resources allocated for the configuration data by | |
1637 | * wpa_config_read(). | |
1638 | */ | |
1639 | void wpa_config_free(struct wpa_config *config) | |
1640 | { | |
1641 | #ifndef CONFIG_NO_CONFIG_BLOBS | |
1642 | struct wpa_config_blob *blob, *prevblob; | |
1643 | #endif /* CONFIG_NO_CONFIG_BLOBS */ | |
1644 | struct wpa_ssid *ssid, *prev = NULL; | |
1645 | ssid = config->ssid; | |
1646 | while (ssid) { | |
1647 | prev = ssid; | |
1648 | ssid = ssid->next; | |
1649 | wpa_config_free_ssid(prev); | |
1650 | } | |
1651 | ||
1652 | #ifndef CONFIG_NO_CONFIG_BLOBS | |
1653 | blob = config->blobs; | |
1654 | prevblob = NULL; | |
1655 | while (blob) { | |
1656 | prevblob = blob; | |
1657 | blob = blob->next; | |
1658 | wpa_config_free_blob(prevblob); | |
1659 | } | |
1660 | #endif /* CONFIG_NO_CONFIG_BLOBS */ | |
1661 | ||
1662 | os_free(config->ctrl_interface); | |
1663 | os_free(config->ctrl_interface_group); | |
1664 | #ifdef EAP_TLS_OPENSSL | |
1665 | os_free(config->opensc_engine_path); | |
1666 | os_free(config->pkcs11_engine_path); | |
1667 | os_free(config->pkcs11_module_path); | |
1668 | #endif /* EAP_TLS_OPENSSL */ | |
1669 | os_free(config->driver_param); | |
3c0b7aa4 JM |
1670 | os_free(config->device_name); |
1671 | os_free(config->manufacturer); | |
1672 | os_free(config->model_name); | |
1673 | os_free(config->model_number); | |
1674 | os_free(config->serial_number); | |
1675 | os_free(config->device_type); | |
6fc6879b JM |
1676 | os_free(config->pssid); |
1677 | os_free(config); | |
1678 | } | |
1679 | ||
1680 | ||
1681 | /** | |
1682 | * wpa_config_get_network - Get configured network based on id | |
1683 | * @config: Configuration data from wpa_config_read() | |
1684 | * @id: Unique network id to search for | |
1685 | * Returns: Network configuration or %NULL if not found | |
1686 | */ | |
1687 | struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id) | |
1688 | { | |
1689 | struct wpa_ssid *ssid; | |
1690 | ||
1691 | ssid = config->ssid; | |
1692 | while (ssid) { | |
1693 | if (id == ssid->id) | |
1694 | break; | |
1695 | ssid = ssid->next; | |
1696 | } | |
1697 | ||
1698 | return ssid; | |
1699 | } | |
1700 | ||
1701 | ||
1702 | /** | |
1703 | * wpa_config_add_network - Add a new network with empty configuration | |
1704 | * @config: Configuration data from wpa_config_read() | |
1705 | * Returns: The new network configuration or %NULL if operation failed | |
1706 | */ | |
1707 | struct wpa_ssid * wpa_config_add_network(struct wpa_config *config) | |
1708 | { | |
1709 | int id; | |
1710 | struct wpa_ssid *ssid, *last = NULL; | |
1711 | ||
1712 | id = -1; | |
1713 | ssid = config->ssid; | |
1714 | while (ssid) { | |
1715 | if (ssid->id > id) | |
1716 | id = ssid->id; | |
1717 | last = ssid; | |
1718 | ssid = ssid->next; | |
1719 | } | |
1720 | id++; | |
1721 | ||
1722 | ssid = os_zalloc(sizeof(*ssid)); | |
1723 | if (ssid == NULL) | |
1724 | return NULL; | |
1725 | ssid->id = id; | |
1726 | if (last) | |
1727 | last->next = ssid; | |
1728 | else | |
1729 | config->ssid = ssid; | |
1730 | ||
1731 | wpa_config_update_prio_list(config); | |
1732 | ||
1733 | return ssid; | |
1734 | } | |
1735 | ||
1736 | ||
1737 | /** | |
1738 | * wpa_config_remove_network - Remove a configured network based on id | |
1739 | * @config: Configuration data from wpa_config_read() | |
1740 | * @id: Unique network id to search for | |
1741 | * Returns: 0 on success, or -1 if the network was not found | |
1742 | */ | |
1743 | int wpa_config_remove_network(struct wpa_config *config, int id) | |
1744 | { | |
1745 | struct wpa_ssid *ssid, *prev = NULL; | |
1746 | ||
1747 | ssid = config->ssid; | |
1748 | while (ssid) { | |
1749 | if (id == ssid->id) | |
1750 | break; | |
1751 | prev = ssid; | |
1752 | ssid = ssid->next; | |
1753 | } | |
1754 | ||
1755 | if (ssid == NULL) | |
1756 | return -1; | |
1757 | ||
1758 | if (prev) | |
1759 | prev->next = ssid->next; | |
1760 | else | |
1761 | config->ssid = ssid->next; | |
1762 | ||
1763 | wpa_config_update_prio_list(config); | |
1764 | wpa_config_free_ssid(ssid); | |
1765 | return 0; | |
1766 | } | |
1767 | ||
1768 | ||
1769 | /** | |
1770 | * wpa_config_set_network_defaults - Set network default values | |
1771 | * @ssid: Pointer to network configuration data | |
1772 | */ | |
1773 | void wpa_config_set_network_defaults(struct wpa_ssid *ssid) | |
1774 | { | |
1775 | ssid->proto = DEFAULT_PROTO; | |
1776 | ssid->pairwise_cipher = DEFAULT_PAIRWISE; | |
1777 | ssid->group_cipher = DEFAULT_GROUP; | |
1778 | ssid->key_mgmt = DEFAULT_KEY_MGMT; | |
1779 | #ifdef IEEE8021X_EAPOL | |
1780 | ssid->eapol_flags = DEFAULT_EAPOL_FLAGS; | |
1781 | ssid->eap_workaround = DEFAULT_EAP_WORKAROUND; | |
1782 | ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE; | |
1783 | #endif /* IEEE8021X_EAPOL */ | |
1784 | } | |
1785 | ||
1786 | ||
1787 | /** | |
1788 | * wpa_config_set - Set a variable in network configuration | |
1789 | * @ssid: Pointer to network configuration data | |
1790 | * @var: Variable name, e.g., "ssid" | |
1791 | * @value: Variable value | |
1792 | * @line: Line number in configuration file or 0 if not used | |
1793 | * Returns: 0 on success, -1 on failure | |
1794 | * | |
1795 | * This function can be used to set network configuration variables based on | |
1796 | * both the configuration file and management interface input. The value | |
1797 | * parameter must be in the same format as the text-based configuration file is | |
1798 | * using. For example, strings are using double quotation marks. | |
1799 | */ | |
1800 | int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value, | |
1801 | int line) | |
1802 | { | |
1803 | size_t i; | |
1804 | int ret = 0; | |
1805 | ||
1806 | if (ssid == NULL || var == NULL || value == NULL) | |
1807 | return -1; | |
1808 | ||
1809 | for (i = 0; i < NUM_SSID_FIELDS; i++) { | |
1810 | const struct parse_data *field = &ssid_fields[i]; | |
1811 | if (os_strcmp(var, field->name) != 0) | |
1812 | continue; | |
1813 | ||
1814 | if (field->parser(field, ssid, line, value)) { | |
1815 | if (line) { | |
1816 | wpa_printf(MSG_ERROR, "Line %d: failed to " | |
1817 | "parse %s '%s'.", line, var, value); | |
1818 | } | |
1819 | ret = -1; | |
1820 | } | |
1821 | break; | |
1822 | } | |
1823 | if (i == NUM_SSID_FIELDS) { | |
1824 | if (line) { | |
1825 | wpa_printf(MSG_ERROR, "Line %d: unknown network field " | |
1826 | "'%s'.", line, var); | |
1827 | } | |
1828 | ret = -1; | |
1829 | } | |
1830 | ||
1831 | return ret; | |
1832 | } | |
1833 | ||
1834 | ||
3d3d3056 WS |
1835 | /** |
1836 | * wpa_config_get_all - Get all options from network configuration | |
1837 | * @ssid: Pointer to network configuration data | |
1838 | * @get_keys: Determines if keys/passwords will be included in returned list | |
1839 | * Returns: %NULL terminated list of all set keys and their values in the form | |
1840 | * of [key1, val1, key2, val2, ... , NULL] | |
1841 | * | |
1842 | * This function can be used to get list of all configured network properties. | |
1843 | * The caller is responsible for freeing the returned list and all its | |
1844 | * elements. | |
1845 | */ | |
1846 | char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys) | |
1847 | { | |
1848 | const struct parse_data *field; | |
1849 | char *key, *value; | |
1850 | size_t i; | |
1851 | char **props; | |
1852 | int fields_num; | |
1853 | ||
1854 | props = os_zalloc(sizeof(char *) * ((2 * NUM_SSID_FIELDS) + 1)); | |
1855 | if (!props) | |
1856 | return NULL; | |
1857 | ||
1858 | fields_num = 0; | |
1859 | for (i = 0; i < NUM_SSID_FIELDS; i++) { | |
1860 | field = &ssid_fields[i]; | |
1861 | if (field->key_data && !get_keys) | |
1862 | continue; | |
1863 | value = field->writer(field, ssid); | |
1864 | if (value == NULL || os_strlen(value) == 0) | |
1865 | continue; | |
1866 | ||
1867 | key = os_strdup(field->name); | |
1868 | if (key == NULL) | |
1869 | goto err; | |
1870 | ||
1871 | props[fields_num * 2] = key; | |
1872 | props[fields_num * 2 + 1] = value; | |
1873 | ||
1874 | fields_num++; | |
1875 | } | |
1876 | ||
1877 | return props; | |
1878 | ||
1879 | err: | |
1880 | value = *props; | |
1881 | while (value) | |
1882 | os_free(value++); | |
1883 | os_free(props); | |
1884 | return NULL; | |
1885 | } | |
1886 | ||
1887 | ||
6fc6879b JM |
1888 | #ifndef NO_CONFIG_WRITE |
1889 | /** | |
1890 | * wpa_config_get - Get a variable in network configuration | |
1891 | * @ssid: Pointer to network configuration data | |
1892 | * @var: Variable name, e.g., "ssid" | |
1893 | * Returns: Value of the variable or %NULL on failure | |
1894 | * | |
1895 | * This function can be used to get network configuration variables. The | |
1896 | * returned value is a copy of the configuration variable in text format, i.e,. | |
1897 | * the same format that the text-based configuration file and wpa_config_set() | |
1898 | * are using for the value. The caller is responsible for freeing the returned | |
1899 | * value. | |
1900 | */ | |
1901 | char * wpa_config_get(struct wpa_ssid *ssid, const char *var) | |
1902 | { | |
1903 | size_t i; | |
1904 | ||
1905 | if (ssid == NULL || var == NULL) | |
1906 | return NULL; | |
1907 | ||
1908 | for (i = 0; i < NUM_SSID_FIELDS; i++) { | |
1909 | const struct parse_data *field = &ssid_fields[i]; | |
1910 | if (os_strcmp(var, field->name) == 0) | |
1911 | return field->writer(field, ssid); | |
1912 | } | |
1913 | ||
1914 | return NULL; | |
1915 | } | |
1916 | ||
1917 | ||
1918 | /** | |
1919 | * wpa_config_get_no_key - Get a variable in network configuration (no keys) | |
1920 | * @ssid: Pointer to network configuration data | |
1921 | * @var: Variable name, e.g., "ssid" | |
1922 | * Returns: Value of the variable or %NULL on failure | |
1923 | * | |
1924 | * This function can be used to get network configuration variable like | |
1925 | * wpa_config_get(). The only difference is that this functions does not expose | |
1926 | * key/password material from the configuration. In case a key/password field | |
1927 | * is requested, the returned value is an empty string or %NULL if the variable | |
1928 | * is not set or "*" if the variable is set (regardless of its value). The | |
1929 | * returned value is a copy of the configuration variable in text format, i.e,. | |
1930 | * the same format that the text-based configuration file and wpa_config_set() | |
1931 | * are using for the value. The caller is responsible for freeing the returned | |
1932 | * value. | |
1933 | */ | |
1934 | char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var) | |
1935 | { | |
1936 | size_t i; | |
1937 | ||
1938 | if (ssid == NULL || var == NULL) | |
1939 | return NULL; | |
1940 | ||
1941 | for (i = 0; i < NUM_SSID_FIELDS; i++) { | |
1942 | const struct parse_data *field = &ssid_fields[i]; | |
1943 | if (os_strcmp(var, field->name) == 0) { | |
1944 | char *res = field->writer(field, ssid); | |
1945 | if (field->key_data) { | |
1946 | if (res && res[0]) { | |
1947 | wpa_printf(MSG_DEBUG, "Do not allow " | |
1948 | "key_data field to be " | |
1949 | "exposed"); | |
1950 | os_free(res); | |
1951 | return os_strdup("*"); | |
1952 | } | |
1953 | ||
1954 | os_free(res); | |
1955 | return NULL; | |
1956 | } | |
1957 | return res; | |
1958 | } | |
1959 | } | |
1960 | ||
1961 | return NULL; | |
1962 | } | |
1963 | #endif /* NO_CONFIG_WRITE */ | |
1964 | ||
1965 | ||
1966 | /** | |
1967 | * wpa_config_update_psk - Update WPA PSK based on passphrase and SSID | |
1968 | * @ssid: Pointer to network configuration data | |
1969 | * | |
1970 | * This function must be called to update WPA PSK when either SSID or the | |
1971 | * passphrase has changed for the network configuration. | |
1972 | */ | |
1973 | void wpa_config_update_psk(struct wpa_ssid *ssid) | |
1974 | { | |
1975 | #ifndef CONFIG_NO_PBKDF2 | |
1976 | pbkdf2_sha1(ssid->passphrase, | |
1977 | (char *) ssid->ssid, ssid->ssid_len, 4096, | |
1978 | ssid->psk, PMK_LEN); | |
1979 | wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)", | |
1980 | ssid->psk, PMK_LEN); | |
1981 | ssid->psk_set = 1; | |
1982 | #endif /* CONFIG_NO_PBKDF2 */ | |
1983 | } | |
1984 | ||
1985 | ||
1986 | #ifndef CONFIG_NO_CONFIG_BLOBS | |
1987 | /** | |
1988 | * wpa_config_get_blob - Get a named configuration blob | |
1989 | * @config: Configuration data from wpa_config_read() | |
1990 | * @name: Name of the blob | |
1991 | * Returns: Pointer to blob data or %NULL if not found | |
1992 | */ | |
1993 | const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config, | |
1994 | const char *name) | |
1995 | { | |
1996 | struct wpa_config_blob *blob = config->blobs; | |
1997 | ||
1998 | while (blob) { | |
1999 | if (os_strcmp(blob->name, name) == 0) | |
2000 | return blob; | |
2001 | blob = blob->next; | |
2002 | } | |
2003 | return NULL; | |
2004 | } | |
2005 | ||
2006 | ||
2007 | /** | |
2008 | * wpa_config_set_blob - Set or add a named configuration blob | |
2009 | * @config: Configuration data from wpa_config_read() | |
2010 | * @blob: New value for the blob | |
2011 | * | |
2012 | * Adds a new configuration blob or replaces the current value of an existing | |
2013 | * blob. | |
2014 | */ | |
2015 | void wpa_config_set_blob(struct wpa_config *config, | |
2016 | struct wpa_config_blob *blob) | |
2017 | { | |
2018 | wpa_config_remove_blob(config, blob->name); | |
2019 | blob->next = config->blobs; | |
2020 | config->blobs = blob; | |
2021 | } | |
2022 | ||
2023 | ||
2024 | /** | |
2025 | * wpa_config_free_blob - Free blob data | |
2026 | * @blob: Pointer to blob to be freed | |
2027 | */ | |
2028 | void wpa_config_free_blob(struct wpa_config_blob *blob) | |
2029 | { | |
2030 | if (blob) { | |
2031 | os_free(blob->name); | |
2032 | os_free(blob->data); | |
2033 | os_free(blob); | |
2034 | } | |
2035 | } | |
2036 | ||
2037 | ||
2038 | /** | |
2039 | * wpa_config_remove_blob - Remove a named configuration blob | |
2040 | * @config: Configuration data from wpa_config_read() | |
2041 | * @name: Name of the blob to remove | |
2042 | * Returns: 0 if blob was removed or -1 if blob was not found | |
2043 | */ | |
2044 | int wpa_config_remove_blob(struct wpa_config *config, const char *name) | |
2045 | { | |
2046 | struct wpa_config_blob *pos = config->blobs, *prev = NULL; | |
2047 | ||
2048 | while (pos) { | |
2049 | if (os_strcmp(pos->name, name) == 0) { | |
2050 | if (prev) | |
2051 | prev->next = pos->next; | |
2052 | else | |
2053 | config->blobs = pos->next; | |
2054 | wpa_config_free_blob(pos); | |
2055 | return 0; | |
2056 | } | |
2057 | prev = pos; | |
2058 | pos = pos->next; | |
2059 | } | |
2060 | ||
2061 | return -1; | |
2062 | } | |
2063 | #endif /* CONFIG_NO_CONFIG_BLOBS */ | |
2064 | ||
2065 | ||
2066 | /** | |
2067 | * wpa_config_alloc_empty - Allocate an empty configuration | |
2068 | * @ctrl_interface: Control interface parameters, e.g., path to UNIX domain | |
2069 | * socket | |
2070 | * @driver_param: Driver parameters | |
2071 | * Returns: Pointer to allocated configuration data or %NULL on failure | |
2072 | */ | |
2073 | struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface, | |
2074 | const char *driver_param) | |
2075 | { | |
2076 | struct wpa_config *config; | |
2077 | ||
2078 | config = os_zalloc(sizeof(*config)); | |
2079 | if (config == NULL) | |
2080 | return NULL; | |
2081 | config->eapol_version = DEFAULT_EAPOL_VERSION; | |
2082 | config->ap_scan = DEFAULT_AP_SCAN; | |
2083 | config->fast_reauth = DEFAULT_FAST_REAUTH; | |
2084 | ||
2085 | if (ctrl_interface) | |
2086 | config->ctrl_interface = os_strdup(ctrl_interface); | |
2087 | if (driver_param) | |
2088 | config->driver_param = os_strdup(driver_param); | |
2089 | ||
2090 | return config; | |
2091 | } | |
2092 | ||
2093 | ||
2094 | #ifndef CONFIG_NO_STDOUT_DEBUG | |
2095 | /** | |
2096 | * wpa_config_debug_dump_networks - Debug dump of configured networks | |
2097 | * @config: Configuration data from wpa_config_read() | |
2098 | */ | |
2099 | void wpa_config_debug_dump_networks(struct wpa_config *config) | |
2100 | { | |
2101 | int prio; | |
2102 | struct wpa_ssid *ssid; | |
2103 | ||
2104 | for (prio = 0; prio < config->num_prio; prio++) { | |
2105 | ssid = config->pssid[prio]; | |
2106 | wpa_printf(MSG_DEBUG, "Priority group %d", | |
2107 | ssid->priority); | |
2108 | while (ssid) { | |
2109 | wpa_printf(MSG_DEBUG, " id=%d ssid='%s'", | |
2110 | ssid->id, | |
2111 | wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); | |
2112 | ssid = ssid->pnext; | |
2113 | } | |
2114 | } | |
2115 | } | |
2116 | #endif /* CONFIG_NO_STDOUT_DEBUG */ |