hostapd/src/wps/wps_nfc.c

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2009-03-06 15:16:22 +01:00
/*
* NFC routines for Wi-Fi Protected Setup
* Copyright (c) 2009, Masashi Honma <honma@ictec.co.jp>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*/
#include "includes.h"
#include "common.h"
#include "wps/wps.h"
#include "wps_i.h"
struct wps_nfc_data {
struct oob_nfc_device_data *oob_nfc_dev;
};
static void * init_nfc(struct wps_context *wps,
struct oob_device_data *oob_dev, int registrar)
{
struct oob_nfc_device_data *oob_nfc_dev;
struct wps_nfc_data *data;
oob_nfc_dev = wps_get_oob_nfc_device(oob_dev->device_name);
if (oob_nfc_dev == NULL) {
wpa_printf(MSG_ERROR, "WPS (NFC): Unknown NFC device (%s)",
oob_dev->device_name);
return NULL;
}
if (oob_nfc_dev->init_func(oob_dev->device_path) < 0)
return NULL;
data = os_zalloc(sizeof(*data));
if (data == NULL) {
wpa_printf(MSG_ERROR, "WPS (NFC): Failed to allocate "
"nfc data area");
return NULL;
}
data->oob_nfc_dev = oob_nfc_dev;
return data;
}
static struct wpabuf * read_nfc(void *priv)
{
struct wps_nfc_data *data = priv;
struct wpabuf *wifi, *buf;
char *raw_data;
size_t len;
raw_data = data->oob_nfc_dev->read_func(&len);
if (raw_data == NULL)
return NULL;
wifi = wpabuf_alloc_copy(raw_data, len);
os_free(raw_data);
if (wifi == NULL) {
wpa_printf(MSG_ERROR, "WPS (NFC): Failed to allocate "
"nfc read area");
return NULL;
}
buf = ndef_parse_wifi(wifi);
wpabuf_free(wifi);
if (buf == NULL)
wpa_printf(MSG_ERROR, "WPS (NFC): Failed to unwrap");
return buf;
}
static int write_nfc(void *priv, struct wpabuf *buf)
{
struct wps_nfc_data *data = priv;
struct wpabuf *wifi;
int ret;
wifi = ndef_build_wifi(buf);
if (wifi == NULL) {
wpa_printf(MSG_ERROR, "WPS (NFC): Failed to wrap");
return -1;
}
ret = data->oob_nfc_dev->write_func(wpabuf_mhead(wifi),
wpabuf_len(wifi));
wpabuf_free(wifi);
return ret;
}
static void deinit_nfc(void *priv)
{
struct wps_nfc_data *data = priv;
data->oob_nfc_dev->deinit_func();
os_free(data);
}
struct oob_device_data oob_nfc_device_data = {
.device_name = NULL,
.device_path = NULL,
.init_func = init_nfc,
.read_func = read_nfc,
.write_func = write_nfc,
.deinit_func = deinit_nfc,
};