1 /* 2 * NFC routines for Wi-Fi Protected Setup 3 * Copyright (c) 2009-2012, Masashi Honma <masashi.honma (at) gmail.com> 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 #include "common.h" 11 12 #include "wps/wps.h" 13 #include "wps_i.h" 14 15 16 struct wps_nfc_data { 17 struct oob_nfc_device_data *oob_nfc_dev; 18 }; 19 20 21 static void * init_nfc(struct wps_context *wps, 22 struct oob_device_data *oob_dev, int registrar) 23 { 24 struct oob_nfc_device_data *oob_nfc_dev; 25 struct wps_nfc_data *data; 26 27 oob_nfc_dev = wps_get_oob_nfc_device(oob_dev->device_name); 28 if (oob_nfc_dev == NULL) { 29 wpa_printf(MSG_ERROR, "WPS (NFC): Unknown NFC device (%s)", 30 oob_dev->device_name); 31 return NULL; 32 } 33 34 if (oob_nfc_dev->init_func(oob_dev->device_path) < 0) 35 return NULL; 36 37 data = os_zalloc(sizeof(*data)); 38 if (data == NULL) { 39 wpa_printf(MSG_ERROR, "WPS (NFC): Failed to allocate " 40 "nfc data area"); 41 return NULL; 42 } 43 data->oob_nfc_dev = oob_nfc_dev; 44 return data; 45 } 46 47 48 static struct wpabuf * read_nfc(void *priv) 49 { 50 struct wps_nfc_data *data = priv; 51 struct wpabuf *wifi, *buf; 52 char *raw_data; 53 size_t len; 54 55 raw_data = data->oob_nfc_dev->read_func(&len); 56 if (raw_data == NULL) 57 return NULL; 58 59 wifi = wpabuf_alloc_copy(raw_data, len); 60 os_free(raw_data); 61 if (wifi == NULL) { 62 wpa_printf(MSG_ERROR, "WPS (NFC): Failed to allocate " 63 "nfc read area"); 64 return NULL; 65 } 66 67 buf = ndef_parse_wifi(wifi); 68 wpabuf_free(wifi); 69 if (buf == NULL) 70 wpa_printf(MSG_ERROR, "WPS (NFC): Failed to unwrap"); 71 return buf; 72 } 73 74 75 static int write_nfc(void *priv, struct wpabuf *buf) 76 { 77 struct wps_nfc_data *data = priv; 78 struct wpabuf *wifi; 79 int ret; 80 81 wifi = ndef_build_wifi(buf); 82 if (wifi == NULL) { 83 wpa_printf(MSG_ERROR, "WPS (NFC): Failed to wrap"); 84 return -1; 85 } 86 87 ret = data->oob_nfc_dev->write_func(wpabuf_mhead(wifi), 88 wpabuf_len(wifi)); 89 wpabuf_free(wifi); 90 return ret; 91 } 92 93 94 static void deinit_nfc(void *priv) 95 { 96 struct wps_nfc_data *data = priv; 97 98 data->oob_nfc_dev->deinit_func(); 99 100 os_free(data); 101 } 102 103 104 struct oob_device_data oob_nfc_device_data = { 105 .device_name = NULL, 106 .device_path = NULL, 107 .init_func = init_nfc, 108 .read_func = read_nfc, 109 .write_func = write_nfc, 110 .deinit_func = deinit_nfc, 111 }; 112
