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      1 /*
      2  * NFC PN531 routines for Wi-Fi Protected Setup
      3  * Copyright (c) 2009, Masashi Honma <honma (at) 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 };
    114