• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /*
2  * nfc_pw_token - Tool for building NFC password tokens for WPS
3  * Copyright (c) 2012, Jouni Malinen <j@w1.fi>
4  *
5  * This software may be distributed under the terms of the BSD license.
6  * See README for more details.
7  */
8 
9 #include "includes.h"
10 
11 #include "utils/common.h"
12 #include "crypto/random.h"
13 #include "wpa_supplicant_i.h"
14 #include "config.h"
15 #include "wps_supplicant.h"
16 
17 
print_bin(const char * title,const struct wpabuf * buf)18 static void print_bin(const char *title, const struct wpabuf *buf)
19 {
20 	size_t i, len;
21 	const u8 *pos;
22 
23 	if (buf == NULL)
24 		return;
25 
26 	printf("%s=", title);
27 
28 	pos = wpabuf_head(buf);
29 	len = wpabuf_len(buf);
30 	for (i = 0; i < len; i++)
31 		printf("%02X", *pos++);
32 
33 	printf("\n");
34 }
35 
36 
main(int argc,char * argv[])37 int main(int argc, char *argv[])
38 {
39 	struct wpa_supplicant wpa_s;
40 	int ret = -1;
41 	struct wpabuf *buf = NULL, *ndef = NULL;
42 	char txt[1000];
43 
44 	if (os_program_init())
45 		return -1;
46 	random_init(NULL);
47 
48 	os_memset(&wpa_s, 0, sizeof(wpa_s));
49 	wpa_s.conf = os_zalloc(sizeof(*wpa_s.conf));
50 	if (wpa_s.conf == NULL)
51 		goto fail;
52 
53 	buf = wpas_wps_nfc_token(&wpa_s, 0);
54 	if (buf == NULL)
55 		goto fail;
56 
57 	ndef = ndef_build_wifi(buf);
58 	if (ndef == NULL)
59 		goto fail;
60 
61 	wpa_snprintf_hex_uppercase(txt, sizeof(txt), wpabuf_head(buf),
62 				   wpabuf_len(buf));
63 	printf("#WPS=%s\n", txt);
64 
65 	wpa_snprintf_hex_uppercase(txt, sizeof(txt), wpabuf_head(ndef),
66 				   wpabuf_len(ndef));
67 	printf("#NDEF=%s\n", txt);
68 
69 	printf("wps_nfc_dev_pw_id=%d\n", wpa_s.conf->wps_nfc_dev_pw_id);
70 	print_bin("wps_nfc_dh_pubkey", wpa_s.conf->wps_nfc_dh_pubkey);
71 	print_bin("wps_nfc_dh_privkey", wpa_s.conf->wps_nfc_dh_privkey);
72 	print_bin("wps_nfc_dev_pw", wpa_s.conf->wps_nfc_dev_pw);
73 
74 	ret = 0;
75 fail:
76 	wpabuf_free(ndef);
77 	wpabuf_free(buf);
78 	wpa_config_free(wpa_s.conf);
79 	random_deinit();
80 	os_program_deinit();
81 
82 	return ret;
83 }
84