wpa_supplicant/nfc_pw_token.c

   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
  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
  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 }