mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-09-18 14:10:36 -07:00
413a17a7a6
Now, you can enable at least two of your favorite technologies (such as LF and HF 14443A) attached a standalone mode and still have spare ROM space for other functionalities on a Proxmark3 Easy with a 256KiB ROM.
575 lines
19 KiB
C
575 lines
19 KiB
C
//-----------------------------------------------------------------------------
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// piwi, 2017, 2018
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Compression tool for FPGA config files. Compress several *.bit files at
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// compile time. Decompression is done at run time (see fpgaloader.c).
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// This uses the lz4 library tuned to this specific case. The small file sizes
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// allow to use "insane" parameters for optimum compression ratio.
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//-----------------------------------------------------------------------------
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#include <stdio.h>
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#include <stdlib.h>
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#include <libgen.h>
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#include <string.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <inttypes.h>
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#include "fpga.h"
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#include "lz4hc.h"
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#ifndef MIN
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#endif
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static void usage(void) {
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fprintf(stdout, "Usage: fpga_compress <infile1> <infile2> ... <infile_n> <outfile>\n");
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fprintf(stdout, " Combine n FPGA bitstream files and compress them into one.\n\n");
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fprintf(stdout, " fpga_compress -v <infile1> <infile2> ... <infile_n> <outfile>\n");
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fprintf(stdout, " Extract Version Information from FPGA bitstream files and write it to <outfile>\n\n");
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fprintf(stdout, " fpga_compress -d <infile> <outfile(s)>\n");
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fprintf(stdout, " Decompress <infile>. Write result to <outfile(s)>\n\n");
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}
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static bool all_feof(FILE *infile[], uint8_t num_infiles) {
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for (uint16_t i = 0; i < num_infiles; i++) {
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if (!feof(infile[i])) {
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return false;
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}
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}
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return true;
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}
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static int zlib_compress(FILE *infile[], uint8_t num_infiles, FILE *outfile) {
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uint8_t *fpga_config = calloc(num_infiles * FPGA_CONFIG_SIZE, sizeof(uint8_t));
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if (fpga_config == NULL) {
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fprintf(stderr, "failed to allocate memory");
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return (EXIT_FAILURE);
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}
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// read the input files. Interleave them into fpga_config[]
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uint32_t total_size = 0;
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do {
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if (total_size > num_infiles * FPGA_CONFIG_SIZE) {
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fprintf(stderr,
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"Input files too big (total > %li bytes). These are probably not PM3 FPGA config files.\n"
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, num_infiles * FPGA_CONFIG_SIZE
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);
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free(fpga_config);
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return (EXIT_FAILURE);
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}
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for (uint16_t j = 0; j < num_infiles; j++) {
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for (uint16_t k = 0; k < FPGA_INTERLEAVE_SIZE; k++) {
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uint8_t c = (uint8_t)fgetc(infile[j]);
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if (!feof(infile[j])) {
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fpga_config[total_size++] = c;
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} else if (num_infiles > 1) {
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fpga_config[total_size++] = '\0';
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}
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}
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}
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} while (all_feof(infile, num_infiles) == false);
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uint32_t buffer_size = FPGA_RING_BUFFER_BYTES;
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if (num_infiles == 1) {
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// 1M bytes for now
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buffer_size = 1024 * 1024;
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}
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uint32_t outsize_max = LZ4_compressBound(buffer_size);
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char *outbuf = calloc(outsize_max, sizeof(char));
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if (outbuf == NULL) {
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fprintf(stderr, "failed to allocate memory");
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free(fpga_config);
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return (EXIT_FAILURE);
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}
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char *ring_buffer = calloc(buffer_size, sizeof(char));
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if (ring_buffer == NULL) {
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fprintf(stderr, "failed to allocate memory");
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free(outbuf);
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free(fpga_config);
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return (EXIT_FAILURE);
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}
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LZ4_streamHC_t *lz4_streamhc = LZ4_createStreamHC();
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LZ4_resetStreamHC_fast(lz4_streamhc, LZ4HC_CLEVEL_MAX);
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int current_in = 0;
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int current_out = 0;
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while (current_in < total_size) {
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int bytes_to_copy = MIN(FPGA_RING_BUFFER_BYTES, (total_size - current_in));
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memcpy(ring_buffer, fpga_config + current_in, bytes_to_copy);
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int cmp_bytes = LZ4_compress_HC_continue(lz4_streamhc, ring_buffer, outbuf, bytes_to_copy, outsize_max);
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if (cmp_bytes < 0) {
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fprintf(stderr, "(lz4 - zlib_compress) error, got negative number of bytes from LZ4_compress_HC_continue call. got %d", cmp_bytes);
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free(ring_buffer);
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free(outbuf);
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free(fpga_config);
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LZ4_freeStreamHC(lz4_streamhc);
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return (EXIT_FAILURE);
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}
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// write size
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fwrite(&cmp_bytes, sizeof(int), 1, outfile);
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// write compressed data
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fwrite(outbuf, sizeof(char), cmp_bytes, outfile);
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current_in += bytes_to_copy;
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current_out += cmp_bytes;
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}
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// free allocated buffers
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free(ring_buffer);
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free(outbuf);
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free(fpga_config);
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LZ4_freeStreamHC(lz4_streamhc);
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if (current_out == 0) {
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fprintf(stderr, "error in lz4");
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return (EXIT_FAILURE);
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} else {
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fprintf(stdout, "compressed %u input bytes to %d output bytes\n", total_size, current_out);
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}
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return (EXIT_SUCCESS);
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}
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typedef struct lz4_stream_s {
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LZ4_streamDecode_t *lz4StreamDecode;
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char *next_in;
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int avail_in;
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} lz4_stream;
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// Call it either with opened infile + outsize=0
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// or with opened infile, opened outfiles, num_outfiles and valid outsize
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static int zlib_decompress(FILE *infile, FILE *outfiles[], uint8_t num_outfiles, long *outsize) {
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if (num_outfiles > 10) {
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return (EXIT_FAILURE);
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}
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LZ4_streamDecode_t lz4StreamDecode_body = {{ 0 }};
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char outbuf[FPGA_RING_BUFFER_BYTES] = {0};
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// file size
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fseek(infile, 0L, SEEK_END);
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long infile_size = ftell(infile);
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fseek(infile, 0L, SEEK_SET);
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if (infile_size <= 0) {
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printf("error, when getting filesize");
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return (EXIT_FAILURE);
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}
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char *outbufall = NULL;
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if (*outsize > 0) {
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outbufall = calloc(*outsize, sizeof(char));
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if (outbufall == NULL) {
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return (EXIT_FAILURE);
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}
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}
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char *inbuf = calloc(infile_size, sizeof(char));
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if (inbuf == NULL) {
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if (outbufall) {
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free(outbufall);
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}
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return (EXIT_FAILURE);
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}
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size_t num_read = fread(inbuf, sizeof(char), infile_size, infile);
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if (num_read != infile_size) {
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if (outbufall) {
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free(outbufall);
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}
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free(inbuf);
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return (EXIT_FAILURE);
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}
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lz4_stream compressed_fpga_stream;
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// initialize lz4 structures
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compressed_fpga_stream.lz4StreamDecode = &lz4StreamDecode_body;
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compressed_fpga_stream.next_in = inbuf;
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compressed_fpga_stream.avail_in = infile_size;
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long total_size = 0;
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while (compressed_fpga_stream.avail_in > 0) {
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int cmp_bytes;
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memcpy(&cmp_bytes, compressed_fpga_stream.next_in, sizeof(int));
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compressed_fpga_stream.next_in += 4;
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compressed_fpga_stream.avail_in -= cmp_bytes + 4;
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const int decBytes = LZ4_decompress_safe_continue(compressed_fpga_stream.lz4StreamDecode, compressed_fpga_stream.next_in, outbuf, cmp_bytes, FPGA_RING_BUFFER_BYTES);
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if (decBytes <= 0) {
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break;
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}
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if (outbufall != NULL) {
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memcpy(outbufall + total_size, outbuf, decBytes);
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}
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total_size += decBytes;
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compressed_fpga_stream.next_in += cmp_bytes;
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}
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if (outbufall == NULL) {
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*outsize = total_size;
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fseek(infile, 0L, SEEK_SET);
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return EXIT_SUCCESS;
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} else {
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// seeking for trailing zeroes
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long offset = 0;
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long outfilesizes[10] = {0};
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for (long k = 0; k < *outsize / (FPGA_INTERLEAVE_SIZE * num_outfiles); k++) {
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for (uint16_t j = 0; j < num_outfiles; j++) {
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for (long i = 0; i < FPGA_INTERLEAVE_SIZE; i++) {
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if (outbufall[offset + i]) {
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outfilesizes[j] = (k * FPGA_INTERLEAVE_SIZE) + i + 1;
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}
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}
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offset += FPGA_INTERLEAVE_SIZE;
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}
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}
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total_size = 0;
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// FPGA bit file ends with 16 zeroes
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for (uint16_t j = 0; j < num_outfiles; j++) {
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outfilesizes[j] += 16;
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total_size += outfilesizes[j];
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}
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offset = 0;
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for (long k = 0; k < *outsize / (FPGA_INTERLEAVE_SIZE * num_outfiles); k++) {
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for (uint16_t j = 0; j < num_outfiles; j++) {
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if (k * FPGA_INTERLEAVE_SIZE < outfilesizes[j]) {
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uint16_t chunk = (outfilesizes[j] - (k * FPGA_INTERLEAVE_SIZE) < FPGA_INTERLEAVE_SIZE) ?
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outfilesizes[j] - (k * FPGA_INTERLEAVE_SIZE) : FPGA_INTERLEAVE_SIZE;
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fwrite(outbufall + offset, chunk, sizeof(char), outfiles[j]);
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}
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offset += FPGA_INTERLEAVE_SIZE;
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}
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}
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printf("uncompressed %li input bytes to %li output bytes\n", infile_size, total_size);
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}
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free(outbufall);
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free(inbuf);
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return (EXIT_SUCCESS);
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}
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/* Simple Xilinx .bit parser. The file starts with the fixed opaque byte sequence
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* 00 09 0f f0 0f f0 0f f0 0f f0 00 00 01
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* After that the format is 1 byte section type (ASCII character), 2 byte length
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* (big endian), <length> bytes content. Except for section 'e' which has 4 bytes
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* length.
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*/
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static int bitparse_find_section(FILE *infile, char section_name, unsigned int *section_length) {
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#define MAX_FPGA_BIT_STREAM_HEADER_SEARCH 100 // maximum number of bytes to search for the requested section
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int result = 0;
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uint16_t numbytes = 0;
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while (numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH) {
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char current_name = (char)fgetc(infile);
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numbytes++;
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if (current_name < 'a' || current_name > 'e') {
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/* Strange section name, abort */
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break;
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}
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uint32_t current_length = 0;
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int tmp;
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switch (current_name) {
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case 'e':
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/* Four byte length field */
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for (int i = 0; i < 4; i++) {
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tmp = fgetc(infile);
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/* image length sanity check, should be under 300KB */
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if ((tmp < 0) || (tmp > 300 * 1024)) {
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break;
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}
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current_length += tmp << (24 - (i * 8));
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}
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numbytes += 4;
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break;
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default: /* Fall through, two byte length field */
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for (int i = 0; i < 2; i++) {
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tmp = fgetc(infile);
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/* if name, date or time fields are too long, we probably shouldn't parse them */
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if ((tmp < 0) || (tmp > 64)) {
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break;
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}
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current_length += tmp << (8 - (i * 8));
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}
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numbytes += 2;
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break;
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}
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if (current_name != 'e' && current_length > 255) {
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/* Maybe a parse error */
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break;
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}
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if (current_name == section_name) {
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/* Found it */
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*section_length = current_length;
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result = 1;
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break;
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}
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for (uint32_t i = 0; i < current_length && numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH; i++) {
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(void)fgetc(infile);
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numbytes++;
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}
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}
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return result;
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}
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static int FpgaGatherVersion(FILE *infile, char *infile_name, char *dst, int len) {
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uint32_t fpga_info_len;
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char tempstr[40] = {0x00};
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dst[0] = '\0';
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for (uint16_t i = 0; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) {
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if (fgetc(infile) != bitparse_fixed_header[i]) {
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fprintf(stderr, "Invalid FPGA file. Aborting...\n\n");
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return (EXIT_FAILURE);
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}
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}
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if (bitparse_find_section(infile, 'a', &fpga_info_len)) {
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for (uint32_t i = 0; i < fpga_info_len; i++) {
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char c = (char)fgetc(infile);
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if (i < sizeof(tempstr)) {
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tempstr[i] = c;
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}
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}
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strncat(dst, tempstr, len - strlen(dst) - 1);
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}
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strncat(dst, " image ", len - strlen(dst) - 1);
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if (bitparse_find_section(infile, 'b', &fpga_info_len)) {
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for (uint32_t i = 0; i < fpga_info_len; i++) {
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char c = (char)fgetc(infile);
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if (i < sizeof(tempstr)) {
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tempstr[i] = c;
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}
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}
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strncat(dst, tempstr, len - strlen(dst) - 1);
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}
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strncat(dst, " ", len - strlen(dst) - 1);
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if (bitparse_find_section(infile, 'c', &fpga_info_len)) {
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for (uint32_t i = 0; i < fpga_info_len; i++) {
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char c = (char)fgetc(infile);
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if (i < sizeof(tempstr)) {
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if (c == '/') c = '-';
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if (c == ' ') c = '0';
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tempstr[i] = c;
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}
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}
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strncat(dst, tempstr, len - strlen(dst) - 1);
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}
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if (bitparse_find_section(infile, 'd', &fpga_info_len)) {
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strncat(dst, " ", len - strlen(dst) - 1);
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for (uint32_t i = 0; i < fpga_info_len; i++) {
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char c = (char)fgetc(infile);
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if (i < sizeof(tempstr)) {
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if (c == ' ') c = '0';
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tempstr[i] = c;
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}
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}
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strncat(dst, tempstr, len - strlen(dst) - 1);
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}
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return 0;
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}
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static void print_version_info_preamble(FILE *outfile, int num_infiles) {
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fprintf(outfile, "//-----------------------------------------------------------------------------\n");
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fprintf(outfile, "// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.\n");
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fprintf(outfile, "//\n");
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fprintf(outfile, "// This code is licensed to you under the terms of the GNU GPL, version 3 or,\n");
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fprintf(outfile, "// at your option, any later version. See the LICENSE.txt file for the text of\n");
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fprintf(outfile, "// the license.\n");
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fprintf(outfile, "//-----------------------------------------------------------------------------\n");
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fprintf(outfile, "// Version information on fpga images\n");
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fprintf(outfile, "//\n");
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fprintf(outfile, "// This file is generated by fpga_compress. Don't edit!\n");
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fprintf(outfile, "//-----------------------------------------------------------------------------\n");
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fprintf(outfile, "\n\n");
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fprintf(outfile, "#include \"fpga.h\"\n\n");
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fprintf(outfile, "const int g_fpga_bitstream_num = %d;\n", num_infiles);
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fprintf(outfile, "const FPGA_VERSION_INFORMATION g_fpga_version_information[%d] = {\n", num_infiles);
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}
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static int generate_fpga_version_info(FILE *infile[], char *infile_names[], int num_infiles, FILE *outfile) {
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char version_string[80] = "";
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print_version_info_preamble(outfile, num_infiles);
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for (int i = 0; i < num_infiles; i++) {
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FpgaGatherVersion(infile[i], infile_names[i], version_string, sizeof(version_string));
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fprintf(outfile, " { \"%s\"", version_string);
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if (!memcmp("fpga_pm3_lf.ncd", version_string, sizeof("fpga_pm3_lf.ncd") - 1))
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fprintf(outfile, ", FPGA_BITSTREAM_LF }");
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else if (!memcmp("fpga_pm3_hf_15.ncd", version_string, sizeof("fpga_pm3_hf_15.ncd") - 1))
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fprintf(outfile, ", FPGA_BITSTREAM_HF_15 }");
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else if (!memcmp("fpga_pm3_hf.ncd", version_string, sizeof("fpga_pm3_hf.ncd") - 1))
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fprintf(outfile, ", FPGA_BITSTREAM_HF }");
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else if (!memcmp("fpga_pm3_felica.ncd", version_string, sizeof("fpga_pm3_felica.ncd") - 1))
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fprintf(outfile, ", FPGA_BITSTREAM_HF_FELICA }");
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else
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fprintf(outfile, ", FPGA_BITSTREAM_UNKNOWN }");
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if (i != num_infiles - 1) {
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fprintf(outfile, ",");
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}
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fprintf(outfile, "\n");
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}
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fprintf(outfile, "};\n");
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return EXIT_SUCCESS;
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}
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int main(int argc, char **argv) {
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if (argc == 1 || argc == 2) {
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usage();
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return (EXIT_FAILURE);
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}
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if (!strcmp(argv[1], "-d")) { // Decompress
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if (argc < 4) {
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usage();
|
|
return (EXIT_FAILURE);
|
|
}
|
|
|
|
uint8_t num_output_files = argc - 3;
|
|
FILE **outfiles = calloc(num_output_files, sizeof(FILE *));
|
|
char **outfile_names = calloc(num_output_files, sizeof(char *));
|
|
for (uint8_t i = 0; i < num_output_files; i++) {
|
|
outfile_names[i] = argv[i + 3];
|
|
outfiles[i] = fopen(outfile_names[i], "wb");
|
|
if (outfiles[i] == NULL) {
|
|
fprintf(stderr, "Error. Cannot open output file %s\n\n", outfile_names[i]);
|
|
free(outfile_names);
|
|
free(outfiles);
|
|
return (EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
FILE *infile = fopen(argv[2], "rb");
|
|
if (infile == NULL) {
|
|
fprintf(stderr, "Error. Cannot open input file %s\n\n", argv[2]);
|
|
|
|
// close file handlers
|
|
for (uint16_t j = 0; j < num_output_files; j++) {
|
|
fclose(outfiles[j]);
|
|
}
|
|
|
|
free(outfile_names);
|
|
free(outfiles);
|
|
return (EXIT_FAILURE);
|
|
}
|
|
|
|
long outsize = 0;
|
|
int ret = 0;
|
|
// First call to estimate output size
|
|
ret = zlib_decompress(infile, outfiles, num_output_files, &outsize);
|
|
if (ret == EXIT_SUCCESS) {
|
|
// Second call to create files
|
|
ret = zlib_decompress(infile, outfiles, num_output_files, &outsize);
|
|
}
|
|
|
|
// close file handlers
|
|
fclose(infile);
|
|
for (uint16_t j = 0; j < num_output_files; j++) {
|
|
fclose(outfiles[j]);
|
|
}
|
|
|
|
free(outfile_names);
|
|
free(outfiles);
|
|
return (ret);
|
|
|
|
} else { // Compress or generate version info
|
|
|
|
bool generate_version_file = false;
|
|
uint8_t num_input_files = 0;
|
|
if (!strcmp(argv[1], "-v")) { // generate version info
|
|
generate_version_file = true;
|
|
num_input_files = argc - 3;
|
|
} else { // compress 1..n fpga files
|
|
num_input_files = argc - 2;
|
|
}
|
|
|
|
FILE **infiles = calloc(num_input_files, sizeof(FILE *));
|
|
char **infile_names = calloc(num_input_files, sizeof(char *));
|
|
for (uint8_t i = 0; i < num_input_files; i++) {
|
|
infile_names[i] = argv[i + (generate_version_file ? 2 : 1)];
|
|
infiles[i] = fopen(infile_names[i], "rb");
|
|
if (infiles[i] == NULL) {
|
|
fprintf(stderr, "Error. Cannot open input file %s\n\n", infile_names[i]);
|
|
free(infile_names);
|
|
free(infiles);
|
|
return (EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
FILE *outfile = fopen(argv[argc - 1], "wb");
|
|
if (outfile == NULL) {
|
|
fprintf(stderr, "Error. Cannot open output file %s\n\n", argv[argc - 1]);
|
|
|
|
// close file handlers
|
|
for (uint16_t j = 0; j < num_input_files; j++) {
|
|
fclose(infiles[j]);
|
|
}
|
|
|
|
free(infile_names);
|
|
free(infiles);
|
|
return (EXIT_FAILURE);
|
|
}
|
|
|
|
int ret = 0;
|
|
if (generate_version_file) {
|
|
ret = generate_fpga_version_info(infiles, infile_names, num_input_files, outfile);
|
|
} else {
|
|
ret = zlib_compress(infiles, num_input_files, outfile);
|
|
}
|
|
|
|
// close file handlers
|
|
fclose(outfile);
|
|
for (uint16_t j = 0; j < num_input_files; j++) {
|
|
fclose(infiles[j]);
|
|
}
|
|
|
|
// free file name allocs
|
|
free(infile_names);
|
|
free(infiles);
|
|
return (ret);
|
|
}
|
|
}
|