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Improve nfc-relay to use nfc_list_devices() capabilities. This should fix Issue 64.

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This commit is contained in:
Romuald Conty 2010-02-09 15:39:56 +00:00
parent 1e0272d006
commit d0610be25c
1 changed files with 42 additions and 18 deletions
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60
src/examples/nfc-relay.c
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@ -1,7 +1,7 @@
/*-
* Public platform independent Near Field Communication (NFC) library
*
* Copyright (C) 2009, Roel Verdult
* Copyright (C) 2009, 2010, Roel Verdult, Romuald Conty
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
@ -19,12 +19,12 @@
/**
* @file nfc-relay.c
* @brief
* @brief Relay example using two devices.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif // HAVE_CONFIG_H
#endif /* HAVE_CONFIG_H */
#include <stdio.h>
#include <stdlib.h>
@ -38,6 +38,7 @@
#include "bitutils.h"
#define MAX_FRAME_LEN 264
#define MAX_DEVICE_COUNT 2
static byte_t abtReaderRx[MAX_FRAME_LEN];
static byte_t abtReaderRxPar[MAX_FRAME_LEN];
@ -68,62 +69,84 @@ int main(int argc,char* argv[])
{
int arg;
bool quiet_output = false;
size_t szFound;
nfc_device_desc_t *pnddDevices;
// Get commandline options
for (arg=1;arg<argc;arg++) {
if (0 == strcmp(argv[arg], "-h")) {
print_usage(argv);
return 0;
return EXIT_SUCCESS;
} else if (0 == strcmp(argv[arg], "-q")) {
INFO("%s", "Quiet mode.");
quiet_output = true;
} else {
ERR("%s is not supported option.", argv[arg]);
print_usage(argv);
return -1;
return EXIT_FAILURE;
}
}
// Display libnfc version
const char* acLibnfcVersion = nfc_version();
printf("%s use libnfc %s\n", argv[0], acLibnfcVersion);
#ifdef WIN32
signal(SIGINT, (void (__cdecl*)(int)) intr_hdlr);
#else
signal(SIGINT, (void (*)()) intr_hdlr);
#endif
// Allocate memory to put the result of available devices listing
if (!(pnddDevices = malloc (MAX_DEVICE_COUNT * sizeof (*pnddDevices)))) {
fprintf (stderr, "malloc() failed\n");
return EXIT_FAILURE;
}
// List available devices
nfc_list_devices (pnddDevices, MAX_DEVICE_COUNT, &szFound);
if (szFound < 2) {
ERR("%zd device found but two connected devices are needed to relay NFC.", szFound);
return EXIT_FAILURE;
}
// Try to open the NFC emulator device
pndTag = nfc_connect(NULL);
pndTag = nfc_connect(&(pnddDevices[0]));
if (pndTag == NULL)
{
printf("Error connecting NFC emulator device\n");
return 1;
return EXIT_FAILURE;
}
printf("\n");
printf("[+] Connected to the NFC emulator device\n");
printf("Hint: tag <---> emulator (relay) <---> reader (relay) <---> original reader\n\n");
printf("Connected to the NFC emulator device: %s\n", pndTag->acName);
printf("[+] Try to break out the auto-emulation, this requires a second reader!\n");
printf("[+] To do this, please send any command after the anti-collision\n");
printf("[+] For example, send a RATS command or use the \"nfc-anticol\" tool\n");
if (!nfc_target_init(pndTag,abtReaderRx,&szReaderRxBits))
{
printf("[+] Initialization of NFC emulator failed\n");
ERR("%s", "Initialization of NFC emulator failed");
nfc_disconnect(pndTag);
return 1;
return EXIT_FAILURE;
}
printf("[+] Configuring emulator settings\n");
printf("%s", "Configuring emulator settings...");
nfc_configure(pndTag,NDO_HANDLE_CRC,false);
nfc_configure(pndTag,NDO_HANDLE_PARITY,false);
nfc_configure(pndTag,NDO_ACCEPT_INVALID_FRAMES,true);
printf("[+] Thank you, the emulated tag is initialized\n");
printf("%s", "Done, emulated tag is initialized");
// Try to open the NFC reader
pndReader = NULL;
while (pndReader == NULL) pndReader = nfc_connect(NULL);
printf("[+] Configuring NFC reader settings\n");
pndReader = nfc_connect(&(pnddDevices[1]));
printf("Connected to the NFC reader device: %s", pndReader->acName);
printf("%s", "Configuring NFC reader settings...");
nfc_initiator_init(pndReader);
nfc_configure(pndReader,NDO_HANDLE_CRC,false);
nfc_configure(pndReader,NDO_HANDLE_PARITY,false);
nfc_configure(pndReader,NDO_ACCEPT_INVALID_FRAMES,true);
printf("[+] Done, relaying frames now!\n\n");
printf("%s", "Done, relaying frames now!");
while(!quitting)
{
@ -164,4 +187,5 @@ int main(int argc,char* argv[])
nfc_disconnect(pndTag);
nfc_disconnect(pndReader);
exit(EXIT_SUCCESS);
}