Legic: rewrite reader to use xcorrelation and precise timing (#654)

[proxmark3-svn] / client / fpga_compress.c

diff --git a/client/fpga_compress.c b/client/fpga_compress.c
index db1ef81b6a0fd27cd7ca04d6fb29e5d10c8a2138..418a02b8abfbd197c9598424a28c783b7d6e9929 100644 (file)
--- a/client/fpga_compress.c
+++ b/client/fpga_compress.c
@@ -1,92 +1,172 @@
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------

+// piwi, 2017, 2018
+//

 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
 // at your option, any later version. See the LICENSE.txt file for the text of
 // the license.
 //-----------------------------------------------------------------------------
 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
 // at your option, any later version. See the LICENSE.txt file for the text of
 // the license.
 //-----------------------------------------------------------------------------

-// Flasher frontend tool
+// Compression tool for FPGA config files. Compress several *.bit files at
+// compile time. Decompression is done at run time (see fpgaloader.c).
+// This uses the zlib library tuned to this specific case. The small file sizes
+// allow to use "insane" parameters for optimum compression ratio.

 //-----------------------------------------------------------------------------
 
 #include <stdio.h>
 #include <stdlib.h>
 //-----------------------------------------------------------------------------
 
 #include <stdio.h>
 #include <stdlib.h>

+#include <libgen.h>

 #include <string.h>
 #include <stdint.h>
 #include <string.h>
 #include <stdint.h>

+#include <stdbool.h>
+#include "fpga.h"

 #include "zlib.h"
 
 #define MAX(a,b) ((a)>(b)?(a):(b))
 
 // zlib configuration
 #include "zlib.h"
 
 #define MAX(a,b) ((a)>(b)?(a):(b))
 
 // zlib configuration

-#define COMPRESS_LEVEL                 9               // use best possible compression
+#define COMPRESS_LEVEL           9  // use best possible compression
+#define COMPRESS_WINDOW_BITS    15  // default = max = 15 for a window of 2^15 = 32KBytes
+#define COMPRESS_MEM_LEVEL       9  // determines the amount of memory allocated during compression. Default = 8.
+/* COMPRESS_STRATEGY can be 
+       Z_DEFAULT_STRATEGY (the default), 
+       Z_FILTERED (more huffmann, less string matching),
+       Z_HUFFMAN_ONLY (huffman only, no string matching)
+       Z_RLE (distances limited to one)
+       Z_FIXED (prevents the use of dynamic Huffman codes)
+*/

 
 

-#define FPGA_CONFIG_SIZE       42175
-static uint8_t fpga_config[FPGA_CONFIG_SIZE];
+#define        COMPRESS_STRATEGY       Z_DEFAULT_STRATEGY
+// zlib tuning parameters:
+#define COMPRESS_GOOD_LENGTH           258
+#define COMPRESS_MAX_LAZY              258
+#define COMPRESS_MAX_NICE_LENGTH       258
+#define COMPRESS_MAX_CHAIN            8192

 
 

-static void usage(char *argv0)
+#define HARDNESTED_TABLE_SIZE          (sizeof(uint32_t) * ((1L<<19)+1))
+
+static void usage(void)

 {
 {

-       fprintf(stderr, "Usage:   %s <infile> <outfile>\n\n", argv0);
+       fprintf(stdout, "Usage: fpga_compress <infile1> <infile2> ... <infile_n> <outfile>\n");
+       fprintf(stdout, "          Combine n FPGA bitstream files and compress them into one.\n\n");
+       fprintf(stdout, "       fpga_compress -v <infile1> <infile2> ... <infile_n> <outfile>\n");
+       fprintf(stdout, "          Extract Version Information from FPGA bitstream files and write it to <outfile>\n\n");
+       fprintf(stdout, "       fpga_compress -d <infile> <outfile>\n");
+       fprintf(stdout, "          Decompress <infile>. Write result to <outfile>\n\n");
+       fprintf(stdout, "       fpga_compress -t <infile> <outfile>\n");
+       fprintf(stdout, "          Compress hardnested table <infile>. Write result to <outfile>\n\n");

 }
 
 
 static voidpf fpga_deflate_malloc(voidpf opaque, uInt items, uInt size)
 {
 }
 
 
 static voidpf fpga_deflate_malloc(voidpf opaque, uInt items, uInt size)
 {

-       fprintf(stderr, "zlib requested %d bytes\n", items*size);

        return malloc(items*size);
 }
 
 
 static void fpga_deflate_free(voidpf opaque, voidpf address)
 {
        return malloc(items*size);
 }
 
 
 static void fpga_deflate_free(voidpf opaque, voidpf address)
 {

-       fprintf(stderr, "zlib frees memory\n");
-       return free(address);
+       free(address);

 }
 
 
 }
 
 

-int zlib_compress(FILE *infile, FILE *outfile)
+static bool all_feof(FILE *infile[], uint8_t num_infiles)

 {
 {

-       int i, ret;
-       z_stream compressed_fpga_stream;
+       for (uint16_t i = 0; i < num_infiles; i++) {
+               if (!feof(infile[i])) {
+                       return false;
+               }
+       }

        
        

-       // read the input file into fpga_config[] and count occurrences of each symbol:
+       return true;
+}
+
+
+int zlib_compress(FILE *infile[], uint8_t num_infiles, FILE *outfile, bool hardnested_mode)
+{
+       uint8_t *fpga_config;
+       uint32_t i;
+       int32_t ret;
+       uint8_t c;
+       z_stream compressed_fpga_stream;
+
+       if (hardnested_mode) {
+               fpga_config = malloc(num_infiles * HARDNESTED_TABLE_SIZE);
+       } else {
+               fpga_config = malloc(num_infiles * FPGA_CONFIG_SIZE);
+       }               
+       // read the input files. Interleave them into fpga_config[]

        i = 0;
        i = 0;

-       while(!feof(infile)) {
-               uint8_t c;
-               c = fgetc(infile);
-               fpga_config[i++] = c;
-               if (i > FPGA_CONFIG_SIZE+1) {
-                       fprintf(stderr, "Input file too big (> %d bytes). This is probably not a PM3 FPGA config file.", FPGA_CONFIG_SIZE);
-                       fclose(infile);
-                       fclose(outfile);
-                       return -1;
+       do {
+
+               if (i >= num_infiles * (hardnested_mode?HARDNESTED_TABLE_SIZE:FPGA_CONFIG_SIZE)) {
+                       if (hardnested_mode) {
+                               fprintf(stderr, "Input file too big (> %lu bytes). This is probably not a hardnested bitflip state table.\n", HARDNESTED_TABLE_SIZE);
+                       } else {
+                               fprintf(stderr, "Input files too big (total > %lu bytes). These are probably not PM3 FPGA config files.\n", num_infiles*FPGA_CONFIG_SIZE);
+                       }
+                       for(uint16_t j = 0; j < num_infiles; j++) {
+                               fclose(infile[j]);
+                       }
+                       free(fpga_config);
+                       return(EXIT_FAILURE);

                }
                }

-       }
+
+               for(uint16_t j = 0; j < num_infiles; j++) {
+                       for(uint16_t k = 0; k < FPGA_INTERLEAVE_SIZE; k++) {
+                               c = (uint8_t)fgetc(infile[j]);
+                               if (!feof(infile[j])) {
+                                       fpga_config[i++] = c;
+                               } else if (num_infiles > 1) {
+                                       fpga_config[i++] = '\0';
+                               }
+                       }
+               }
+
+       } while (!all_feof(infile, num_infiles));

 
        // initialize zlib structures
        compressed_fpga_stream.next_in = fpga_config;
        compressed_fpga_stream.avail_in = i;
        compressed_fpga_stream.zalloc = fpga_deflate_malloc;
        compressed_fpga_stream.zfree = fpga_deflate_free;
 
        // initialize zlib structures
        compressed_fpga_stream.next_in = fpga_config;
        compressed_fpga_stream.avail_in = i;
        compressed_fpga_stream.zalloc = fpga_deflate_malloc;
        compressed_fpga_stream.zfree = fpga_deflate_free;

-       
+       compressed_fpga_stream.opaque = Z_NULL;
+       ret = deflateInit2(&compressed_fpga_stream, 
+                                               COMPRESS_LEVEL,
+                                               Z_DEFLATED,
+                                               COMPRESS_WINDOW_BITS,
+                                               COMPRESS_MEM_LEVEL,
+                                               COMPRESS_STRATEGY);
+

        // estimate the size of the compressed output
        // estimate the size of the compressed output

-       unsigned int outsize_max = deflateBound(&compressed_fpga_stream, compressed_fpga_stream.avail_in);
+       uint32_t outsize_max = deflateBound(&compressed_fpga_stream, compressed_fpga_stream.avail_in);

        uint8_t *outbuf = malloc(outsize_max);
        compressed_fpga_stream.next_out = outbuf;
        compressed_fpga_stream.avail_out = outsize_max;
        uint8_t *outbuf = malloc(outsize_max);
        compressed_fpga_stream.next_out = outbuf;
        compressed_fpga_stream.avail_out = outsize_max;

-       fprintf(stderr, "Allocated %d bytes for output file (estimated upper bound)\n", outsize_max);
+        
+       if (ret == Z_OK) {
+               ret = deflateTune(&compressed_fpga_stream,
+                                                       COMPRESS_GOOD_LENGTH,
+                                                       COMPRESS_MAX_LAZY,
+                                                       COMPRESS_MAX_NICE_LENGTH,
+                                                       COMPRESS_MAX_CHAIN);
+       }

        
        

-       ret = deflateInit(&compressed_fpga_stream, COMPRESS_LEVEL);
-                               

        if (ret == Z_OK) {
                ret = deflate(&compressed_fpga_stream, Z_FINISH);
        }
        
        if (ret == Z_OK) {
                ret = deflate(&compressed_fpga_stream, Z_FINISH);
        }
        

-       fprintf(stderr, "produced %d bytes of output\n", compressed_fpga_stream.total_out);
+       fprintf(stdout, "compressed %u input bytes to %lu output bytes\n", i, compressed_fpga_stream.total_out);

 
        if (ret != Z_STREAM_END) {
 
        if (ret != Z_STREAM_END) {

-               fprintf(stderr, "Error in deflate(): %d %s\n", ret, compressed_fpga_stream.msg);
+               fprintf(stderr, "Error in deflate(): %i %s\n", ret, compressed_fpga_stream.msg);

                free(outbuf);
                deflateEnd(&compressed_fpga_stream);
                free(outbuf);
                deflateEnd(&compressed_fpga_stream);

-               fclose(infile);
+               for(uint16_t j = 0; j < num_infiles; j++) {
+                       fclose(infile[j]);
+               }

                fclose(outfile);
                fclose(outfile);

-               return -1;
+               free(infile);
+               free(fpga_config);
+               return(EXIT_FAILURE);

                }
                
        for (i = 0; i < compressed_fpga_stream.total_out; i++) {
                }
                
        for (i = 0; i < compressed_fpga_stream.total_out; i++) {


@@ -95,40 +175,309 @@ int zlib_compress(FILE *infile, FILE *outfile)
 
        free(outbuf);
        deflateEnd(&compressed_fpga_stream);
 
        free(outbuf);
        deflateEnd(&compressed_fpga_stream);

-       fclose(infile);
+       for(uint16_t j = 0; j < num_infiles; j++) {
+               fclose(infile[j]);
+       }

        fclose(outfile);
        fclose(outfile);

+       free(infile);
+       free(fpga_config);
+       
+       return(EXIT_SUCCESS);
+       
+}

 
 

-       return 0;
+
+int zlib_decompress(FILE *infile, FILE *outfile)
+{
+       #define DECOMPRESS_BUF_SIZE 1024
+       uint8_t outbuf[DECOMPRESS_BUF_SIZE];
+       uint8_t inbuf[DECOMPRESS_BUF_SIZE];
+       int32_t ret;
+       
+       z_stream compressed_fpga_stream;
+
+       // initialize zlib structures
+       compressed_fpga_stream.next_in = inbuf;
+       compressed_fpga_stream.avail_in = 0;
+       compressed_fpga_stream.next_out = outbuf;
+       compressed_fpga_stream.avail_out = DECOMPRESS_BUF_SIZE;
+       compressed_fpga_stream.zalloc = fpga_deflate_malloc;
+       compressed_fpga_stream.zfree = fpga_deflate_free;
+       compressed_fpga_stream.opaque = Z_NULL;
+       
+       ret = inflateInit2(&compressed_fpga_stream, 0);
+       
+       do {
+               if (compressed_fpga_stream.avail_in == 0) {
+                       compressed_fpga_stream.next_in = inbuf;
+                       uint16_t i = 0;
+                       do {
+                               int32_t c = fgetc(infile);
+                               if (!feof(infile)) {
+                                       inbuf[i++] = c & 0xFF;
+                                       compressed_fpga_stream.avail_in++;
+                               } else {
+                                       break;
+                               }
+                       } while (i < DECOMPRESS_BUF_SIZE);
+               }
+
+               ret = inflate(&compressed_fpga_stream, Z_SYNC_FLUSH);
+
+               if (ret != Z_OK && ret != Z_STREAM_END) {
+                       break;
+               }
+
+               if (compressed_fpga_stream.avail_out == 0) {
+                       for (uint16_t i = 0; i < DECOMPRESS_BUF_SIZE; i++) {
+                               fputc(outbuf[i], outfile);
+                       }
+                       compressed_fpga_stream.avail_out = DECOMPRESS_BUF_SIZE;
+                       compressed_fpga_stream.next_out = outbuf;
+               }
+       } while (ret == Z_OK);
+
+       if (ret == Z_STREAM_END) {  // reached end of input
+               uint16_t i = 0;
+               while (compressed_fpga_stream.avail_out < DECOMPRESS_BUF_SIZE) {
+                       fputc(outbuf[i++], outfile);
+                       compressed_fpga_stream.avail_out++;
+               }
+               fclose(outfile);
+               fclose(infile);
+               return(EXIT_SUCCESS);
+       } else {
+               fprintf(stderr, "Error. Inflate() returned error %i, %s", ret, compressed_fpga_stream.msg);
+               fclose(outfile);
+               fclose(infile);
+               return(EXIT_FAILURE);
+       }
+       
+}
+
+
+/* Simple Xilinx .bit parser. The file starts with the fixed opaque byte sequence
+ * 00 09 0f f0 0f f0 0f f0 0f f0 00 00 01
+ * After that the format is 1 byte section type (ASCII character), 2 byte length
+ * (big endian), <length> bytes content. Except for section 'e' which has 4 bytes
+ * length.
+ */
+static int bitparse_find_section(FILE *infile, char section_name, unsigned int *section_length)
+{
+       int result = 0;
+       #define MAX_FPGA_BIT_STREAM_HEADER_SEARCH 100  // maximum number of bytes to search for the requested section
+       uint16_t numbytes = 0;
+       while(numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH) {
+               char current_name = (char)fgetc(infile);
+               numbytes++;
+               if(current_name < 'a' || current_name > 'e') {
+                       /* Strange section name, abort */
+                       break;
+               }
+               unsigned int current_length = 0;
+               switch(current_name) {
+               case 'e':
+                       /* Four byte length field */
+                       current_length += fgetc(infile) << 24;
+                       current_length += fgetc(infile) << 16;
+                       numbytes += 2;
+               default: /* Fall through, two byte length field */
+                       current_length += fgetc(infile) << 8;
+                       current_length += fgetc(infile) << 0;
+                       numbytes += 2;
+               }
+
+               if(current_name != 'e' && current_length > 255) {
+                       /* Maybe a parse error */
+                       break;
+               }
+
+               if(current_name == section_name) {
+                       /* Found it */
+                       *section_length = current_length;
+                       result = 1;
+                       break;
+               }
+
+               for (uint16_t i = 0; i < current_length && numbytes < MAX_FPGA_BIT_STREAM_HEADER_SEARCH; i++) {
+                       (void)fgetc(infile);
+                       numbytes++;
+               }
+       }
+
+       return result;
+}
+
+
+static int FpgaGatherVersion(FILE *infile, char* infile_name, char *dst, int len)
+{
+       unsigned int fpga_info_len;
+       char tempstr[40] = {0x00};

        
        

+       dst[0] = '\0';
+
+       for (uint16_t i = 0; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) {
+               if (fgetc(infile) != bitparse_fixed_header[i]) {
+                       fprintf(stderr, "Invalid FPGA file. Aborting...\n\n");
+                       return(EXIT_FAILURE);
+               }
+       }
+
+       strncat(dst, basename(infile_name), len-1);
+       // if (bitparse_find_section(infile, 'a', &fpga_info_len)) {
+               // for (uint16_t i = 0; i < fpga_info_len; i++) {
+                       // char c = (char)fgetc(infile);
+                       // if (i < sizeof(tempstr)) {
+                               // tempstr[i] = c;
+                       // }
+               // }
+               // strncat(dst, tempstr, len-1);
+       // }
+       strncat(dst, " built", len-1);
+       if (bitparse_find_section(infile, 'b', &fpga_info_len)) {
+               strncat(dst, " for ", len-1);
+               for (uint16_t i = 0; i < fpga_info_len; i++) {
+                       char c = (char)fgetc(infile);
+                       if (i < sizeof(tempstr)) {
+                               tempstr[i] = c;
+                       }
+               }
+               strncat(dst, tempstr, len-1);
+       }
+       if (bitparse_find_section(infile, 'c', &fpga_info_len)) {
+               strncat(dst, " on ", len-1);
+               for (uint16_t i = 0; i < fpga_info_len; i++) {
+                       char c = (char)fgetc(infile);
+                       if (i < sizeof(tempstr)) {
+                               tempstr[i] = c;
+                       }
+               }
+               strncat(dst, tempstr, len-1);
+       }
+       if (bitparse_find_section(infile, 'd', &fpga_info_len)) {
+               strncat(dst, " at ", len-1);
+               for (uint16_t i = 0; i < fpga_info_len; i++) {
+                       char c = (char)fgetc(infile);
+                       if (i < sizeof(tempstr)) {
+                               tempstr[i] = c;
+                       }
+               }
+               strncat(dst, tempstr, len-1);
+       }
+       return 0;
+}
+
+
+static void print_version_info_preamble(FILE *outfile, int num_infiles) {
+       fprintf(outfile, "//-----------------------------------------------------------------------------\n");
+       fprintf(outfile, "// piwi, 2018\n");
+       fprintf(outfile, "//\n");
+       fprintf(outfile, "// This code is licensed to you under the terms of the GNU GPL, version 2 or,\n");
+       fprintf(outfile, "// at your option, any later version. See the LICENSE.txt file for the text of\n");
+       fprintf(outfile, "// the license.\n");
+       fprintf(outfile, "//-----------------------------------------------------------------------------\n");
+       fprintf(outfile, "// Version information on fpga images\n");
+       fprintf(outfile, "//\n");
+       fprintf(outfile, "// This file is generated by fpga_compress. Don't edit!\n");
+       fprintf(outfile, "//-----------------------------------------------------------------------------\n");
+       fprintf(outfile, "\n");
+       fprintf(outfile, "\n");
+       fprintf(outfile, "const int fpga_bitstream_num = %d;\n", num_infiles);
+       fprintf(outfile, "const char* const fpga_version_information[%d] = {\n", num_infiles);

 }
 
 
 }
 
 

+static int generate_fpga_version_info(FILE *infile[], char *infile_names[], int num_infiles, FILE *outfile) {
+       
+       char version_string[80] = "";
+       
+       print_version_info_preamble(outfile, num_infiles);
+       
+       for (int i = 0; i < num_infiles; i++) {
+               FpgaGatherVersion(infile[i], infile_names[i], version_string, sizeof(version_string));
+               fprintf(outfile, "\t\"%s\"", version_string);
+               if (i != num_infiles-1) {
+                       fprintf(outfile, ",");
+               }
+               fprintf(outfile,"\n");
+       }
+       
+       fprintf(outfile, "};\n");
+
+       return 0;
+}      
+

 
 int main(int argc, char **argv)
 {
 
 int main(int argc, char **argv)
 {

-       char *infilename;
-       char *outfilename;
+       FILE **infiles;
+       char **infile_names;
+       FILE *outfile;

        
        

-       if (argc != 3) {
-               usage(argv[0]);
-               return -1;
-       } else {
-               infilename = argv[1];
-               outfilename = argv[2];
-       }       
+       if (argc == 1 || argc == 2) {
+               usage();
+               return(EXIT_FAILURE);
+       }
+       
+       if (!strcmp(argv[1], "-d")) { // Decompress

 
 

-       FILE *infile = fopen(infilename, "rb");
-       if (infile == NULL) {
-               fprintf(stderr, "Error. Cannot open input file %s", infilename);
-               return -1;
+               infiles = calloc(1, sizeof(FILE*));
+               if (argc != 4) {
+                       usage();
+                       return(EXIT_FAILURE);
+               } 
+               infiles[0] = fopen(argv[2], "rb");
+               if (infiles[0] == NULL) {
+                       fprintf(stderr, "Error. Cannot open input file %s\n\n", argv[2]);
+                       return(EXIT_FAILURE);

                }
                }

-               
-       FILE *outfile = fopen(outfilename, "wb");
-       if (outfile == NULL) {
-               fprintf(stderr, "Error. Cannot open output file %s", outfilename);
-               fclose(infile);
-               return -1;
+               outfile = fopen(argv[3], "wb");
+               if (outfile == NULL) {
+                       fprintf(stderr, "Error. Cannot open output file %s\n\n", argv[3]);
+                       return(EXIT_FAILURE);

                }
                }

-               
-       return zlib_compress(infile, outfile);
+               return zlib_decompress(infiles[0], outfile);
+
+       } else { // Compress or gemerate version info
+
+               bool hardnested_mode = false;
+               bool generate_version_file = false;
+               int num_input_files = 0;
+               if (!strcmp(argv[1], "-t")) {                   // compress one hardnested table
+                       if (argc != 4) {
+                               usage();
+                               return(EXIT_FAILURE);
+                       }
+                       hardnested_mode = true;
+                       num_input_files = 1;
+               } else 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;
+               }
+                       
+               infiles = calloc(num_input_files, sizeof(FILE*));
+               infile_names = calloc(num_input_files, sizeof(char*));
+               for (uint16_t i = 0; i < num_input_files; i++) {
+                       infile_names[i] = argv[i+((hardnested_mode || 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]);
+                               return(EXIT_FAILURE);
+                       }
+               }
+               outfile = fopen(argv[argc-1], "wb");
+               if (outfile == NULL) {
+                       fprintf(stderr, "Error. Cannot open output file %s\n\n", argv[argc-1]);
+                       return(EXIT_FAILURE);
+               }
+               if (generate_version_file) {
+                       if (generate_fpga_version_info(infiles, infile_names, num_input_files, outfile)) {
+                               return(EXIT_FAILURE);
+                       }
+               } else {
+                       return zlib_compress(infiles, num_input_files, outfile, hardnested_mode);
+               }
+       }

 }
 }