mirror of
https://github.com/Proxmark/proxmark3.git
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314 lines
9 KiB
C
314 lines
9 KiB
C
//-----------------------------------------------------------------------------
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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 zlib 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 <string.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include "zlib.h"
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#define MAX(a,b) ((a)>(b)?(a):(b))
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// zlib configuration
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#define COMPRESS_LEVEL 9 // use best possible compression
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#define COMPRESS_WINDOW_BITS 15 // default = max = 15 for a window of 2^15 = 32KBytes
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#define COMPRESS_MEM_LEVEL 9 // determines the amount of memory allocated during compression. Default = 8.
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/* COMPRESS_STRATEGY can be
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Z_DEFAULT_STRATEGY (the default),
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Z_FILTERED (more huffmann, less string matching),
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Z_HUFFMAN_ONLY (huffman only, no string matching)
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Z_RLE (distances limited to one)
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Z_FIXED (prevents the use of dynamic Huffman codes)
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*/
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#define COMPRESS_STRATEGY Z_DEFAULT_STRATEGY
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// zlib tuning parameters:
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#define COMPRESS_GOOD_LENGTH 258
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#define COMPRESS_MAX_LAZY 258
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#define COMPRESS_MAX_NICE_LENGTH 258
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#define COMPRESS_MAX_CHAIN 8192
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#define FPGA_INTERLEAVE_SIZE 288 // (the FPGA's internal config frame size is 288 bits. Interleaving with 288 bytes should give best compression)
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#define FPGA_CONFIG_SIZE 42336L // our current fpga_[lh]f.bit files are 42175 bytes. Rounded up to next multiple of FPGA_INTERLEAVE_SIZE
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#define HARDNESTED_TABLE_SIZE (sizeof(uint32_t) * ((1L<<19)+1))
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static void usage(void)
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{
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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 -d <infile> <outfile>");
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fprintf(stdout, " Decompress <infile>. Write result to <outfile>");
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fprintf(stdout, " fpga_compress -t <infile> <outfile>");
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fprintf(stdout, " Compress hardnested table <infile>. Write result to <outfile>");
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}
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static voidpf fpga_deflate_malloc(voidpf opaque, uInt items, uInt size)
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{
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return malloc(items*size);
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}
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static void fpga_deflate_free(voidpf opaque, voidpf address)
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{
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return free(address);
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}
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static bool all_feof(FILE *infile[], uint8_t num_infiles)
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{
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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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int zlib_compress(FILE *infile[], uint8_t num_infiles, FILE *outfile, bool hardnested_mode)
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{
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uint8_t *fpga_config;
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uint32_t i;
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int32_t ret;
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uint8_t c;
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z_stream compressed_fpga_stream;
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if (hardnested_mode) {
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fpga_config = malloc(num_infiles * HARDNESTED_TABLE_SIZE);
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} else {
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fpga_config = malloc(num_infiles * FPGA_CONFIG_SIZE);
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}
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// read the input files. Interleave them into fpga_config[]
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i = 0;
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do {
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if (i >= num_infiles * (hardnested_mode?HARDNESTED_TABLE_SIZE:FPGA_CONFIG_SIZE)) {
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if (hardnested_mode) {
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fprintf(stderr, "Input file too big (> %lu bytes). This is probably not a hardnested bitflip state table.\n", HARDNESTED_TABLE_SIZE);
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} else {
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fprintf(stderr, "Input files too big (total > %lu bytes). These are probably not PM3 FPGA config files.\n", num_infiles*FPGA_CONFIG_SIZE);
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}
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for(uint16_t j = 0; j < num_infiles; j++) {
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fclose(infile[j]);
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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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c = fgetc(infile[j]);
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if (!feof(infile[j])) {
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fpga_config[i++] = c;
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} else if (num_infiles > 1) {
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fpga_config[i++] = '\0';
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}
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}
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}
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} while (!all_feof(infile, num_infiles));
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// initialize zlib structures
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compressed_fpga_stream.next_in = fpga_config;
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compressed_fpga_stream.avail_in = i;
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compressed_fpga_stream.zalloc = fpga_deflate_malloc;
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compressed_fpga_stream.zfree = fpga_deflate_free;
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compressed_fpga_stream.opaque = Z_NULL;
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ret = deflateInit2(&compressed_fpga_stream,
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COMPRESS_LEVEL,
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Z_DEFLATED,
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COMPRESS_WINDOW_BITS,
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COMPRESS_MEM_LEVEL,
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COMPRESS_STRATEGY);
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// estimate the size of the compressed output
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uint32_t outsize_max = deflateBound(&compressed_fpga_stream, compressed_fpga_stream.avail_in);
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uint8_t *outbuf = malloc(outsize_max);
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compressed_fpga_stream.next_out = outbuf;
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compressed_fpga_stream.avail_out = outsize_max;
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if (ret == Z_OK) {
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ret = deflateTune(&compressed_fpga_stream,
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COMPRESS_GOOD_LENGTH,
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COMPRESS_MAX_LAZY,
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COMPRESS_MAX_NICE_LENGTH,
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COMPRESS_MAX_CHAIN);
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}
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if (ret == Z_OK) {
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ret = deflate(&compressed_fpga_stream, Z_FINISH);
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}
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fprintf(stdout, "compressed %u input bytes to %lu output bytes\n", i, compressed_fpga_stream.total_out);
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if (ret != Z_STREAM_END) {
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fprintf(stderr, "Error in deflate(): %i %s\n", ret, compressed_fpga_stream.msg);
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free(outbuf);
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deflateEnd(&compressed_fpga_stream);
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for(uint16_t j = 0; j < num_infiles; j++) {
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fclose(infile[j]);
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}
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fclose(outfile);
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free(infile);
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free(fpga_config);
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return(EXIT_FAILURE);
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}
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for (i = 0; i < compressed_fpga_stream.total_out; i++) {
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fputc(outbuf[i], outfile);
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}
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free(outbuf);
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deflateEnd(&compressed_fpga_stream);
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for(uint16_t j = 0; j < num_infiles; j++) {
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fclose(infile[j]);
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}
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fclose(outfile);
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free(infile);
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free(fpga_config);
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return(EXIT_SUCCESS);
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}
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int zlib_decompress(FILE *infile, FILE *outfile)
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{
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#define DECOMPRESS_BUF_SIZE 1024
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uint8_t outbuf[DECOMPRESS_BUF_SIZE];
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uint8_t inbuf[DECOMPRESS_BUF_SIZE];
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int32_t ret;
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z_stream compressed_fpga_stream;
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// initialize zlib structures
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compressed_fpga_stream.next_in = inbuf;
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compressed_fpga_stream.avail_in = 0;
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compressed_fpga_stream.next_out = outbuf;
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compressed_fpga_stream.avail_out = DECOMPRESS_BUF_SIZE;
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compressed_fpga_stream.zalloc = fpga_deflate_malloc;
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compressed_fpga_stream.zfree = fpga_deflate_free;
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compressed_fpga_stream.opaque = Z_NULL;
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ret = inflateInit2(&compressed_fpga_stream, 0);
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do {
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if (compressed_fpga_stream.avail_in == 0) {
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compressed_fpga_stream.next_in = inbuf;
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uint16_t i = 0;
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do {
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int32_t c = fgetc(infile);
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if (!feof(infile)) {
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inbuf[i++] = c & 0xFF;
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compressed_fpga_stream.avail_in++;
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} else {
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break;
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}
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} while (i < DECOMPRESS_BUF_SIZE);
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}
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ret = inflate(&compressed_fpga_stream, Z_SYNC_FLUSH);
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if (ret != Z_OK && ret != Z_STREAM_END) {
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break;
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}
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if (compressed_fpga_stream.avail_out == 0) {
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for (uint16_t i = 0; i < DECOMPRESS_BUF_SIZE; i++) {
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fputc(outbuf[i], outfile);
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}
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compressed_fpga_stream.avail_out = DECOMPRESS_BUF_SIZE;
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compressed_fpga_stream.next_out = outbuf;
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}
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} while (ret == Z_OK);
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if (ret == Z_STREAM_END) { // reached end of input
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uint16_t i = 0;
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while (compressed_fpga_stream.avail_out < DECOMPRESS_BUF_SIZE) {
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fputc(outbuf[i++], outfile);
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compressed_fpga_stream.avail_out++;
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}
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fclose(outfile);
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fclose(infile);
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return(EXIT_SUCCESS);
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} else {
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fprintf(stderr, "Error. Inflate() returned error %i, %s", ret, compressed_fpga_stream.msg);
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fclose(outfile);
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fclose(infile);
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return(EXIT_FAILURE);
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}
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}
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int main(int argc, char **argv)
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{
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FILE **infiles;
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FILE *outfile;
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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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infiles = calloc(1, sizeof(FILE*));
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if (argc != 4) {
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usage();
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return(EXIT_FAILURE);
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}
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infiles[0] = fopen(argv[2], "rb");
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if (infiles[0] == NULL) {
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fprintf(stderr, "Error. Cannot open input file %s", argv[2]);
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return(EXIT_FAILURE);
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}
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outfile = fopen(argv[3], "wb");
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if (outfile == NULL) {
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fprintf(stderr, "Error. Cannot open output file %s", argv[3]);
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return(EXIT_FAILURE);
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}
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return zlib_decompress(infiles[0], outfile);
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} else { // Compress
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bool hardnested_mode = false;
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int num_input_files = 0;
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if (!strcmp(argv[1], "-t")) { // hardnested table
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if (argc != 4) {
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usage();
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return(EXIT_FAILURE);
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}
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hardnested_mode = true;
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num_input_files = 1;
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} else {
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num_input_files = argc-2;
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}
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infiles = calloc(num_input_files, sizeof(FILE*));
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for (uint16_t i = 0; i < num_input_files; i++) {
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infiles[i] = fopen(argv[i+(hardnested_mode?2:1)], "rb");
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if (infiles[i] == NULL) {
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fprintf(stderr, "Error. Cannot open input file %s", argv[i+(hardnested_mode?2:1)]);
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return(EXIT_FAILURE);
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}
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}
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outfile = fopen(argv[argc-1], "wb");
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if (outfile == NULL) {
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fprintf(stderr, "Error. Cannot open output file %s", argv[argc-1]);
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return(EXIT_FAILURE);
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}
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return zlib_compress(infiles, num_input_files, outfile, hardnested_mode);
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}
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}
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