Commit a7649da2 authored by Philippe Teuwen's avatar Philippe Teuwen

nfc-read-forum-tag3: add -q and document -o -

parent 2aa4b99b
......@@ -3,6 +3,9 @@
nfc-read-forum-tag3 \- Extract NDEF Message from a NFC Forum Tag Type 3
.SH SYNOPSIS
.B nfc-read-forum-tag3
.RI [
.RI \fR\fB\-q\fR
.RI ]
.RI \fR\fB\-o\fR
.IR FILE
.SH DESCRIPTION
......@@ -12,8 +15,15 @@ This utility extracts (if available) NDEF Messages contained in a NFC Forum Tag
.
.SH OPTIONS
\fR\fB\-o\fR
output extracted NDEF Message to
.IR FILE
: output extracted NDEF Message to
.IR FILE
(use
\fR\fB\-o \-\fR
to output to stdout)
\fR\fB\-q\fR
: be quiet, don't display Attribute Block parsing info
.SH BUGS
Please report any bugs on the
......
......@@ -72,9 +72,11 @@ static nfc_context *context;
static void
print_usage(char *progname)
{
fprintf(stderr, "usage: %s -o FILE\n", progname);
fprintf(stderr, "usage: %s [-q] -o FILE\n", progname);
fprintf(stderr, "\nOptions:\n");
fprintf(stderr, " -o Extract NDEF message if available in FILE\n");
fprintf(stderr, " -o FILE Extract NDEF message if available in FILE\n");
fprintf(stderr, " -o - Extract NDEF message if available to stdout\n");
fprintf(stderr, " -q Be quiet, don't display Attribute Block parsing info\n");
}
static void stop_select(int sig)
......@@ -169,13 +171,17 @@ main(int argc, char *argv[])
(void)argv;
int ch;
bool quiet = false;
char *ndef_output = NULL;
while ((ch = getopt(argc, argv, "ho:")) != -1) {
while ((ch = getopt(argc, argv, "hqo:")) != -1) {
switch (ch) {
case 'h':
print_usage(argv[0]);
exit(EXIT_SUCCESS);
break;
case 'q':
quiet = true;
break;
case 'o':
ndef_output = optarg;
break;
......@@ -219,7 +225,9 @@ main(int argc, char *argv[])
exit(EXIT_FAILURE);
}
fprintf(message_stream, "NFC device: %s opened\n", nfc_device_get_name(pnd));
if (!quiet) {
fprintf(message_stream, "NFC device: %s opened\n", nfc_device_get_name(pnd));
}
nfc_modulation nm = {
.nmt = NMT_FELICA,
......@@ -237,7 +245,10 @@ main(int argc, char *argv[])
nfc_exit(context);
exit(EXIT_FAILURE);
}
fprintf(message_stream, "Place your NFC Forum Tag Type 3 in the field...\n");
if (!quiet) {
fprintf(message_stream, "Place your NFC Forum Tag Type 3 in the field...\n");
}
// Polling payload (SENSF_REQ) must be present (see NFC Digital Protol)
const uint8_t *pbtSensfReq = (uint8_t *)"\x00\xff\xff\x01\x00";
......@@ -292,60 +303,63 @@ main(int argc, char *argv[])
exit(EXIT_FAILURE);
}
fprintf(message_stream, "NDEF Attribute Block:\n");
const int ndef_major_version = (data[0] & 0xf0) >> 4;
const int ndef_minor_version = (data[0] & 0x0f);
fprintf(message_stream, "* Mapping version: %d.%d\n", ndef_major_version, ndef_minor_version);
const int ndef_nbr = data[1];
fprintf(message_stream, "* Maximum nr of blocks to read by Check Command: %3d block%s\n", ndef_nbr, ndef_nbr > 1 ? "s" : "");
const int ndef_nbw = data[2];
fprintf(message_stream, "* Maximum nr of blocks to write by Update Command: %3d block%s\n", ndef_nbw, ndef_nbw > 1 ? "s" : "");
const int ndef_nmaxb = (data[3] << 8) + data[4];
fprintf(message_stream, "* Maximum nr of blocks available for NDEF data: %3d block%s (%d bytes)\n", ndef_nmaxb, ndef_nmaxb > 1 ? "s" : "", ndef_nmaxb * 16);
const int ndef_writeflag = data[9];
fprintf(message_stream, "* NDEF writing state: ");
switch (ndef_writeflag) {
case 0x00:
fprintf(message_stream, "finished (0x00)\n");
break;
case 0x0f:
fprintf(message_stream, "in progress (0x0F)\n");
break;
default:
fprintf(message_stream, "invalid (0x%02X)\n", ndef_writeflag);
break;
}
const int ndef_rwflag = data[10];
fprintf(message_stream, "* NDEF Access Attribute: ");
switch (ndef_rwflag) {
case 0x00:
fprintf(message_stream, "Read only (0x00)\n");
break;
case 0x01:
fprintf(message_stream, "Read/Write (0x01)\n");
break;
default:
fprintf(message_stream, "invalid (0x%02X)\n", ndef_rwflag);
break;
}
uint32_t ndef_data_len = (data[11] << 16) + (data[12] << 8) + data[13];
fprintf(message_stream, "* NDEF message length: %d bytes\n", ndef_data_len);
uint16_t ndef_calculated_checksum = 0;
for (size_t n = 0; n < 14; n++)
ndef_calculated_checksum += data[n];
const uint16_t ndef_checksum = (data[14] << 8) + data[15];
if (!quiet) {
fprintf(message_stream, "NDEF Attribute Block:\n");
fprintf(message_stream, "* Mapping version: %d.%d\n", ndef_major_version, ndef_minor_version);
fprintf(message_stream, "* Maximum nr of blocks to read by Check Command: %3d block%s\n", ndef_nbr, ndef_nbr > 1 ? "s" : "");
fprintf(message_stream, "* Maximum nr of blocks to write by Update Command: %3d block%s\n", ndef_nbw, ndef_nbw > 1 ? "s" : "");
fprintf(message_stream, "* Maximum nr of blocks available for NDEF data: %3d block%s (%d bytes)\n", ndef_nmaxb, ndef_nmaxb > 1 ? "s" : "", ndef_nmaxb * 16);
fprintf(message_stream, "* NDEF writing state: ");
switch (ndef_writeflag) {
case 0x00:
fprintf(message_stream, "finished (0x00)\n");
break;
case 0x0f:
fprintf(message_stream, "in progress (0x0F)\n");
break;
default:
fprintf(message_stream, "invalid (0x%02X)\n", ndef_writeflag);
break;
}
fprintf(message_stream, "* NDEF Access Attribute: ");
switch (ndef_rwflag) {
case 0x00:
fprintf(message_stream, "Read only (0x00)\n");
break;
case 0x01:
fprintf(message_stream, "Read/Write (0x01)\n");
break;
default:
fprintf(message_stream, "invalid (0x%02X)\n", ndef_rwflag);
break;
}
fprintf(message_stream, "* NDEF message length: %d bytes\n", ndef_data_len);
if (ndef_calculated_checksum != ndef_checksum) {
fprintf(message_stream, "* Checksum: fail (0x%04X != 0x%04X)\n", ndef_calculated_checksum, ndef_checksum);
} else {
fprintf(message_stream, "* Checksum: ok (0x%04X)\n", ndef_checksum);
}
}
if (ndef_calculated_checksum != ndef_checksum) {
fprintf(message_stream, "* Checksum: fail (0x%04X != 0x%04X)\n", ndef_calculated_checksum, ndef_checksum);
} else {
fprintf(message_stream, "* Checksum: ok (0x%04X)\n", ndef_checksum);
fprintf(stderr, "Error: Checksum failed! Exiting now.\n");
fclose(ndef_stream);
nfc_close(pnd);
nfc_exit(context);
exit(EXIT_FAILURE);
}
if (!ndef_data_len) {
......@@ -373,13 +387,15 @@ main(int argc, char *argv[])
}
if (fwrite(data, 1, ndef_data_len, ndef_stream) != ndef_data_len) {
fprintf(stderr, "Could not write to file.\n");
fprintf(stderr, "Error: could not write to file.\n");
fclose(ndef_stream);
nfc_close(pnd);
nfc_exit(context);
exit(EXIT_FAILURE);
} else {
fprintf(stderr, "%i bytes written to %s\n", ndef_data_len, ndef_output);
if (!quiet) {
fprintf(stderr, "%i bytes written to %s\n", ndef_data_len, ndef_output);
}
}
fclose(ndef_stream);
......
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