134 lines
4 KiB
C
134 lines
4 KiB
C
/*-
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* Free/Libre Near Field Communication (NFC) library
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*
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* Libnfc historical contributors:
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* Copyright (C) 2009 Roel Verdult
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* Copyright (C) 2009-2013 Romuald Conty
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* Copyright (C) 2010-2012 Romain Tartière
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* Copyright (C) 2010-2013 Philippe Teuwen
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* Copyright (C) 2012-2013 Ludovic Rousseau
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* Additional contributors of this file:
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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-scan-device.c
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* @brief Lists each available NFC device
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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 <err.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <nfc/nfc.h>
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#include "nfc-utils.h"
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#define MAX_DEVICE_COUNT 16
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#define MAX_TARGET_COUNT 16
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static nfc_device *pnd;
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static void
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print_usage(const char *argv[])
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{
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printf("Usage: %s [OPTIONS]\n", argv[0]);
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printf("Options:\n");
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printf("\t-h\tPrint this help message.\n");
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printf("\t-v\tSet verbose display.\n");
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printf("\t-i\tAllow intrusive scan.\n");
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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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const char *acLibnfcVersion;
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size_t i;
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bool verbose = false;
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nfc_context *context;
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// Get commandline options
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for (int arg = 1; arg < argc; arg++) {
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if (0 == strcmp(argv[arg], "-h")) {
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print_usage(argv);
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exit(EXIT_SUCCESS);
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} else if (0 == strcmp(argv[arg], "-v")) {
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verbose = true;
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} else if (0 == strcmp(argv[arg], "-i")) {
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// This has to be done before the call to nfc_init()
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setenv("LIBNFC_INTRUSIVE_SCAN", "yes", 1);
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} else {
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ERR("%s is not supported option.", argv[arg]);
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print_usage(argv);
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exit(EXIT_FAILURE);
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}
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}
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nfc_init(&context);
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if (context == NULL) {
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ERR("Unable to init libnfc (malloc)\n");
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exit(EXIT_FAILURE);
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}
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// Display libnfc version
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acLibnfcVersion = nfc_version();
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printf("%s uses libnfc %s\n", argv[0], acLibnfcVersion);
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nfc_connstring connstrings[MAX_DEVICE_COUNT];
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size_t szDeviceFound = nfc_list_devices(context, connstrings, MAX_DEVICE_COUNT);
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if (szDeviceFound == 0) {
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printf("No NFC device found.\n");
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nfc_exit(context);
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exit(EXIT_FAILURE);
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}
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printf("%d NFC device(s) found:\n", (int)szDeviceFound);
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char *strinfo = NULL;
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for (i = 0; i < szDeviceFound; i++) {
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pnd = nfc_open(context, connstrings[i]);
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if (pnd != NULL) {
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printf("- %s:\n %s\n", nfc_device_get_name(pnd), nfc_device_get_connstring(pnd));
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if (verbose) {
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if (nfc_device_get_information_about(pnd, &strinfo) >= 0) {
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printf("%s", strinfo);
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nfc_free(strinfo);
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}
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}
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nfc_close(pnd);
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} else {
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printf("nfc_open failed for %s\n", connstrings[i]);
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}
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}
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nfc_exit(context);
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exit(EXIT_SUCCESS);
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}
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