1 /* 2 * NFC 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 22 struct wps_nfc_data { 23 struct oob_nfc_device_data *oob_nfc_dev; 24 }; 25 26 27 static void * init_nfc(struct wps_context *wps, 28 struct oob_device_data *oob_dev, int registrar) 29 { 30 struct oob_nfc_device_data *oob_nfc_dev; 31 struct wps_nfc_data *data; 32 33 oob_nfc_dev = wps_get_oob_nfc_device(oob_dev->device_name); 34 if (oob_nfc_dev == NULL) { 35 wpa_printf(MSG_ERROR, "WPS (NFC): Unknown NFC device (%s)", 36 oob_dev->device_name); 37 return NULL; 38 } 39 40 if (oob_nfc_dev->init_func(oob_dev->device_path) < 0) 41 return NULL; 42 43 data = os_zalloc(sizeof(*data)); 44 if (data == NULL) { 45 wpa_printf(MSG_ERROR, "WPS (NFC): Failed to allocate " 46 "nfc data area"); 47 return NULL; 48 } 49 data->oob_nfc_dev = oob_nfc_dev; 50 return data; 51 } 52 53 54 static struct wpabuf * read_nfc(void *priv) 55 { 56 struct wps_nfc_data *data = priv; 57 struct wpabuf *wifi, *buf; 58 char *raw_data; 59 size_t len; 60 61 raw_data = data->oob_nfc_dev->read_func(&len); 62 if (raw_data == NULL) 63 return NULL; 64 65 wifi = wpabuf_alloc_copy(raw_data, len); 66 os_free(raw_data); 67 if (wifi == NULL) { 68 wpa_printf(MSG_ERROR, "WPS (NFC): Failed to allocate " 69 "nfc read area"); 70 return NULL; 71 } 72 73 buf = ndef_parse_wifi(wifi); 74 wpabuf_free(wifi); 75 if (buf == NULL) 76 wpa_printf(MSG_ERROR, "WPS (NFC): Failed to unwrap"); 77 return buf; 78 } 79 80 81 static int write_nfc(void *priv, struct wpabuf *buf) 82 { 83 struct wps_nfc_data *data = priv; 84 struct wpabuf *wifi; 85 int ret; 86 87 wifi = ndef_build_wifi(buf); 88 if (wifi == NULL) { 89 wpa_printf(MSG_ERROR, "WPS (NFC): Failed to wrap"); 90 return -1; 91 } 92 93 ret = data->oob_nfc_dev->write_func(wpabuf_mhead(wifi), 94 wpabuf_len(wifi)); 95 wpabuf_free(wifi); 96 return ret; 97 } 98 99 100 static void deinit_nfc(void *priv) 101 { 102 struct wps_nfc_data *data = priv; 103 104 data->oob_nfc_dev->deinit_func(); 105 106 os_free(data); 107 } 108 109 110 struct oob_device_data oob_nfc_device_data = { 111 .device_name = NULL, 112 .device_path = NULL, 113 .init_func = init_nfc, 114 .read_func = read_nfc, 115 .write_func = write_nfc, 116 .deinit_func = deinit_nfc, 117 }; 118
