src/wps/wps_nfc_pn531.c

   1 /*
   2  * NFC PN531 routines for Wi-Fi Protected Setup
   3  * Copyright (c) 2009, Masashi Honma <honma@ictec.co.jp>
   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 #include "common.h"
  17
  18 #include "wps/wps.h"
  19 #include "wps_i.h"
  20
  21 #include "WpsNfcType.h"
  22 #include "WpsNfc.h"
  23
  24
  25 static int init_nfc_pn531(char *path)
  26 {
  27         u32 ret;
  28
  29         ret = WpsNfcInit();
  30         if (ret != WPS_NFCLIB_ERR_SUCCESS) {
  31                 wpa_printf(MSG_ERROR, "WPS (PN531): Failed to initialize "
  32                            "NFC Library: 0x%08x", ret);
  33                 return -1;
  34         }
  35
  36         ret = WpsNfcOpenDevice((int8 *) path);
  37         if (ret != WPS_NFCLIB_ERR_SUCCESS) {
  38                 wpa_printf(MSG_ERROR, "WPS (PN531): Failed to open "
  39                            "NFC Device(%s): 0x%08x", path, ret);
  40                 goto fail;
  41         }
  42
  43         ret = WpsNfcTokenDiscovery();
  44         if (ret != WPS_NFCLIB_ERR_SUCCESS) {
  45                 wpa_printf(MSG_ERROR, "WPS (PN531): Failed to discover "
  46                            "token: 0x%08x", ret);
  47                 WpsNfcCloseDevice();
  48                 goto fail;
  49         }
  50
  51         return 0;
  52
  53 fail:
  54         WpsNfcDeinit();
  55         return -1;
  56 }
  57
  58
  59 static void * read_nfc_pn531(size_t *size)
  60 {
  61         uint32 len;
  62         u32 ret;
  63         int8 *data;
  64
  65         ret = WpsNfcRawReadToken(&data, &len);
  66         if (ret != WPS_NFCLIB_ERR_SUCCESS) {
  67                 wpa_printf(MSG_ERROR, "WPS (PN531): Failed to read: 0x%08x",
  68                            ret);
  69                 return NULL;
  70         }
  71
  72         *size = len;
  73         return data;
  74 }
  75
  76
  77 static int write_nfc_pn531(void *data, size_t len)
  78 {
  79         u32 ret;
  80
  81         ret = WpsNfcRawWriteToken(data, len);
  82         if (ret != WPS_NFCLIB_ERR_SUCCESS) {
  83                 wpa_printf(MSG_ERROR, "WPS (PN531): Failed to write: 0x%08x",
  84                            ret);
  85                 return -1;
  86         }
  87
  88         return 0;
  89 }
  90
  91
  92 static void deinit_nfc_pn531(void)
  93 {
  94         u32 ret;
  95
  96         ret = WpsNfcCloseDevice();
  97         if (ret != WPS_NFCLIB_ERR_SUCCESS)
  98                 wpa_printf(MSG_ERROR, "WPS (PN531): Failed to close "
  99                            "NFC Device: 0x%08x", ret);
 100
 101         ret = WpsNfcDeinit();
 102         if (ret != WPS_NFCLIB_ERR_SUCCESS)
 103                 wpa_printf(MSG_ERROR, "WPS (PN531): Failed to deinitialize "
 104                            "NFC Library: 0x%08x", ret);
 105 }
 106
 107
 108 struct oob_nfc_device_data oob_nfc_pn531_device_data = {
 109         .init_func      = init_nfc_pn531,
 110         .read_func      = read_nfc_pn531,
 111         .write_func     = write_nfc_pn531,
 112         .deinit_func    = deinit_nfc_pn531,
 113 };