146 lines
4.3 KiB
C
146 lines
4.3 KiB
C
/*-
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* Public platform independent Near Field Communication (NFC) library examples
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*
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* Copyright (C) 2009, Roel Verdult
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* Copyright (C) 2010, Romuald Conty
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2 )Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* Note that this license only applies on the examples, NFC library itself is under LGPL
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*
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*/
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/**
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* @file nfc-dep-target.c
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* @brief Turns the NFC device into a D.E.P. target (see NFCIP-1)
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif // HAVE_CONFIG_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <nfc/nfc.h>
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#include "utils/nfc-utils.h"
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#define MAX_FRAME_LEN 264
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static nfc_device *pnd;
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static void stop_dep_communication (int sig)
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{
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(void) sig;
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if (pnd)
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nfc_abort_command (pnd);
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else
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exit (EXIT_FAILURE);
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}
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int
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main (int argc, const char *argv[])
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{
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uint8_t abtRx[MAX_FRAME_LEN];
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int szRx;
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uint8_t abtTx[] = "Hello Mars!";
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#define MAX_DEVICE_COUNT 2
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nfc_connstring connstrings[MAX_DEVICE_COUNT];
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size_t szDeviceFound = nfc_list_devices (NULL, connstrings, MAX_DEVICE_COUNT);
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// Little hack to allow using nfc-dep-initiator & nfc-dep-target from
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// the same machine: if there is more than one readers opened
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// nfc-dep-target will open the second reader
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// (we hope they're always detected in the same order)
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nfc_init (NULL);
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if (szDeviceFound == 1) {
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pnd = nfc_open (NULL, connstrings[0]);
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} else if (szDeviceFound > 1) {
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pnd = nfc_open (NULL, connstrings[1]);
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} else {
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printf("No device found.\n");
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return EXIT_FAILURE;
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}
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if (argc > 1) {
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printf ("Usage: %s\n", argv[0]);
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return EXIT_FAILURE;
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}
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nfc_target nt = {
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.nm = {
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.nmt = NMT_DEP,
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.nbr = NBR_UNDEFINED
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},
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.nti = {
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.ndi = {
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.abtNFCID3 = { 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xff, 0x00, 0x00 },
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.szGB = 4,
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.abtGB = { 0x12, 0x34, 0x56, 0x78 },
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.ndm = NDM_UNDEFINED,
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/* These bytes are not used by nfc_target_init: the chip will provide them automatically to the initiator */
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.btDID = 0x00,
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.btBS = 0x00,
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.btBR = 0x00,
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.btTO = 0x00,
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.btPP = 0x01,
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},
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},
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};
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if (!pnd) {
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printf("Unable to open NFC device.\n");
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return EXIT_FAILURE;
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}
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printf ("NFC device: %s opened\n", nfc_device_get_name (pnd));
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signal (SIGINT, stop_dep_communication);
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printf ("NFC device will now act as: ");
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print_nfc_target (nt, false);
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printf ("Waiting for initiator request...\n");
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if ((szRx = nfc_target_init (pnd, &nt, abtRx, sizeof(abtRx), 0)) < 0) {
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nfc_perror(pnd, "nfc_target_init");
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goto error;
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}
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printf("Initiator request received. Waiting for data...\n");
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if ((szRx = nfc_target_receive_bytes (pnd, abtRx, sizeof (abtRx), 0)) < 0) {
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nfc_perror(pnd, "nfc_target_receive_bytes");
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goto error;
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}
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abtRx[(size_t) szRx] = '\0';
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printf ("Received: %s\n", abtRx);
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printf ("Sending: %s\n", abtTx);
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if (nfc_target_send_bytes (pnd, abtTx, sizeof(abtTx), 0) < 0) {
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nfc_perror(pnd, "nfc_target_send_bytes");
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goto error;
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}
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printf("Data sent.\n");
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error:
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nfc_close (pnd);
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nfc_exit (NULL);
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return EXIT_SUCCESS;
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}
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