nfc-read-forum-tag3: add -q and document -o -
This commit is contained in:
Philippe Teuwen
parent
2aa4b99b7b
commit
a7649da2b0
2 changed files with 75 additions and 49 deletions
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@ -3,6 +3,9 @@
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nfc-read-forum-tag3 \- Extract NDEF Message from a NFC Forum Tag Type 3
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.SH SYNOPSIS
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.B nfc-read-forum-tag3
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.RI [
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.RI \fR\fB\-q\fR
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.RI ]
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.RI \fR\fB\-o\fR
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.IR FILE
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.SH DESCRIPTION
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@ -12,8 +15,15 @@ This utility extracts (if available) NDEF Messages contained in a NFC Forum Tag
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.
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.SH OPTIONS
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\fR\fB\-o\fR
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output extracted NDEF Message to
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.IR FILE
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: output extracted NDEF Message to
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.IR FILE
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(use
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\fR\fB\-o \-\fR
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to output to stdout)
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\fR\fB\-q\fR
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: be quiet, don't display Attribute Block parsing info
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.SH BUGS
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Please report any bugs on the
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@ -72,9 +72,11 @@ static nfc_context *context;
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static void
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print_usage(char *progname)
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{
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fprintf(stderr, "usage: %s -o FILE\n", progname);
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fprintf(stderr, "usage: %s [-q] -o FILE\n", progname);
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fprintf(stderr, "\nOptions:\n");
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fprintf(stderr, " -o Extract NDEF message if available in FILE\n");
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fprintf(stderr, " -o FILE Extract NDEF message if available in FILE\n");
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fprintf(stderr, " -o - Extract NDEF message if available to stdout\n");
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fprintf(stderr, " -q Be quiet, don't display Attribute Block parsing info\n");
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}
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static void stop_select(int sig)
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@ -169,13 +171,17 @@ main(int argc, char *argv[])
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(void)argv;
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int ch;
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bool quiet = false;
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char *ndef_output = NULL;
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while ((ch = getopt(argc, argv, "ho:")) != -1) {
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while ((ch = getopt(argc, argv, "hqo:")) != -1) {
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switch (ch) {
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case 'h':
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print_usage(argv[0]);
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exit(EXIT_SUCCESS);
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break;
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case 'q':
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quiet = true;
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break;
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case 'o':
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ndef_output = optarg;
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break;
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@ -219,7 +225,9 @@ main(int argc, char *argv[])
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exit(EXIT_FAILURE);
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}
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fprintf(message_stream, "NFC device: %s opened\n", nfc_device_get_name(pnd));
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if (!quiet) {
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fprintf(message_stream, "NFC device: %s opened\n", nfc_device_get_name(pnd));
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}
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nfc_modulation nm = {
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.nmt = NMT_FELICA,
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@ -237,7 +245,10 @@ main(int argc, char *argv[])
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nfc_exit(context);
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exit(EXIT_FAILURE);
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}
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fprintf(message_stream, "Place your NFC Forum Tag Type 3 in the field...\n");
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if (!quiet) {
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fprintf(message_stream, "Place your NFC Forum Tag Type 3 in the field...\n");
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}
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// Polling payload (SENSF_REQ) must be present (see NFC Digital Protol)
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const uint8_t *pbtSensfReq = (uint8_t *)"\x00\xff\xff\x01\x00";
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@ -292,60 +303,63 @@ main(int argc, char *argv[])
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exit(EXIT_FAILURE);
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}
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fprintf(message_stream, "NDEF Attribute Block:\n");
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const int ndef_major_version = (data[0] & 0xf0) >> 4;
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const int ndef_minor_version = (data[0] & 0x0f);
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fprintf(message_stream, "* Mapping version: %d.%d\n", ndef_major_version, ndef_minor_version);
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const int ndef_nbr = data[1];
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fprintf(message_stream, "* Maximum nr of blocks to read by Check Command: %3d block%s\n", ndef_nbr, ndef_nbr > 1 ? "s" : "");
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const int ndef_nbw = data[2];
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fprintf(message_stream, "* Maximum nr of blocks to write by Update Command: %3d block%s\n", ndef_nbw, ndef_nbw > 1 ? "s" : "");
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const int ndef_nmaxb = (data[3] << 8) + data[4];
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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);
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const int ndef_writeflag = data[9];
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fprintf(message_stream, "* NDEF writing state: ");
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switch (ndef_writeflag) {
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case 0x00:
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fprintf(message_stream, "finished (0x00)\n");
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break;
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case 0x0f:
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fprintf(message_stream, "in progress (0x0F)\n");
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break;
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default:
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fprintf(message_stream, "invalid (0x%02X)\n", ndef_writeflag);
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break;
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}
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const int ndef_rwflag = data[10];
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fprintf(message_stream, "* NDEF Access Attribute: ");
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switch (ndef_rwflag) {
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case 0x00:
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fprintf(message_stream, "Read only (0x00)\n");
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break;
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case 0x01:
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fprintf(message_stream, "Read/Write (0x01)\n");
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break;
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default:
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fprintf(message_stream, "invalid (0x%02X)\n", ndef_rwflag);
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break;
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}
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uint32_t ndef_data_len = (data[11] << 16) + (data[12] << 8) + data[13];
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fprintf(message_stream, "* NDEF message length: %d bytes\n", ndef_data_len);
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uint16_t ndef_calculated_checksum = 0;
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for (size_t n = 0; n < 14; n++)
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ndef_calculated_checksum += data[n];
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const uint16_t ndef_checksum = (data[14] << 8) + data[15];
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if (!quiet) {
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fprintf(message_stream, "NDEF Attribute Block:\n");
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fprintf(message_stream, "* Mapping version: %d.%d\n", ndef_major_version, ndef_minor_version);
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fprintf(message_stream, "* Maximum nr of blocks to read by Check Command: %3d block%s\n", ndef_nbr, ndef_nbr > 1 ? "s" : "");
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fprintf(message_stream, "* Maximum nr of blocks to write by Update Command: %3d block%s\n", ndef_nbw, ndef_nbw > 1 ? "s" : "");
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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);
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fprintf(message_stream, "* NDEF writing state: ");
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switch (ndef_writeflag) {
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case 0x00:
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fprintf(message_stream, "finished (0x00)\n");
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break;
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case 0x0f:
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fprintf(message_stream, "in progress (0x0F)\n");
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break;
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default:
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fprintf(message_stream, "invalid (0x%02X)\n", ndef_writeflag);
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break;
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}
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fprintf(message_stream, "* NDEF Access Attribute: ");
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switch (ndef_rwflag) {
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case 0x00:
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fprintf(message_stream, "Read only (0x00)\n");
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break;
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case 0x01:
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fprintf(message_stream, "Read/Write (0x01)\n");
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break;
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default:
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fprintf(message_stream, "invalid (0x%02X)\n", ndef_rwflag);
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break;
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}
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fprintf(message_stream, "* NDEF message length: %d bytes\n", ndef_data_len);
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if (ndef_calculated_checksum != ndef_checksum) {
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fprintf(message_stream, "* Checksum: fail (0x%04X != 0x%04X)\n", ndef_calculated_checksum, ndef_checksum);
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} else {
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fprintf(message_stream, "* Checksum: ok (0x%04X)\n", ndef_checksum);
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}
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}
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if (ndef_calculated_checksum != ndef_checksum) {
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fprintf(message_stream, "* Checksum: fail (0x%04X != 0x%04X)\n", ndef_calculated_checksum, ndef_checksum);
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} else {
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fprintf(message_stream, "* Checksum: ok (0x%04X)\n", ndef_checksum);
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fprintf(stderr, "Error: Checksum failed! Exiting now.\n");
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fclose(ndef_stream);
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nfc_close(pnd);
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nfc_exit(context);
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exit(EXIT_FAILURE);
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}
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if (!ndef_data_len) {
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@ -373,13 +387,15 @@ main(int argc, char *argv[])
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}
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if (fwrite(data, 1, ndef_data_len, ndef_stream) != ndef_data_len) {
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fprintf(stderr, "Could not write to file.\n");
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fprintf(stderr, "Error: could not write to file.\n");
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fclose(ndef_stream);
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nfc_close(pnd);
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nfc_exit(context);
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exit(EXIT_FAILURE);
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} else {
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fprintf(stderr, "%i bytes written to %s\n", ndef_data_len, ndef_output);
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if (!quiet) {
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fprintf(stderr, "%i bytes written to %s\n", ndef_data_len, ndef_output);
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}
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}
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fclose(ndef_stream);
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