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Commit bee029d7 by devttys0
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Merge pull request #80 from swt2c/unbunble_miniz 

Move most of binwalk's tinfl additions to a separate file
parents ea23f88d e9218340
Showing with 137 additions and 135 deletions
src/C/miniz/Makefile
......@@ -2,12 +2,12 @@ LIBNAME=libtinfl.$(SOEXT)
all: $(LIBNAME)
$(LIBNAME): tinfl.o
$(CC) $(CFLAGS) $(CPPFLAGS) -shared -Wl,$(SONAME),$(LIBNAME) tinfl.o -o $(LIBNAME) $(LDFLAGS)
$(LIBNAME): tinfl_wrapper.o
$(CC) $(CFLAGS) $(CPPFLAGS) -shared -Wl,$(SONAME),$(LIBNAME) tinfl_wrapper.o -o $(LIBNAME) $(LDFLAGS)
chmod +x $(LIBNAME)
tinfl.o:
$(CC) $(CFLAGS) $(CPPFLAGS) -c tinfl.c
tinfl_wrapper.o:
$(CC) $(CFLAGS) $(CPPFLAGS) -c tinfl_wrapper.c
install:
mkdir -p $(DESTDIR)$(LIBDIR)
......
src/C/miniz/tinfl.c
......@@ -8,7 +8,6 @@
#ifndef TINFL_HEADER_INCLUDED
#define TINFL_HEADER_INCLUDED
#include <stdio.h>
#include <stdlib.h>
typedef unsigned char mz_uint8;
......@@ -70,10 +69,6 @@ size_t tinfl_decompress_mem_to_mem(void *pOut_buf, size_t out_buf_len, const voi
typedef int (*tinfl_put_buf_func_ptr)(const void* pBuf, int len, void *pUser);
int tinfl_decompress_mem_to_callback(const void *pIn_buf, size_t *pIn_buf_size, tinfl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags);
// Checks to see if the first block of data in in_buf is valid zlib compressed data.
// Returns 1 if valid, 0 if invalid.
int is_valid_zlib_data(char *in_buf, size_t in_buf_size);
struct tinfl_decompressor_tag; typedef struct tinfl_decompressor_tag tinfl_decompressor;
// Max size of LZ dictionary.
......@@ -573,117 +568,6 @@ int tinfl_decompress_mem_to_callback(const void *pIn_buf, size_t *pIn_buf_size,
return result;
}
#define BLOCK_SIZE (32*1024)
char *inflate_block(char *buf, size_t buf_size)
{
size_t out_size = BLOCK_SIZE;
return (char *) tinfl_decompress_mem_to_heap((const void *) buf, buf_size, (size_t *) &out_size, 0);
}
/* CJH */
int is_deflated_callback(const void *pBuf, int len, void *pUser)
{
int *decomp_size = pUser;
*decomp_size += len;
if(len > 0)
{
return 1;
}
return 0;
}
/*
* Tries to determine if a given buffer contains valid deflated data.
*
* @buf - The buffer of data to check for deflated data.
* @buf_size - The size of @buf.
* @includes_zlib_header - Set to 1 if the buffer should start with a valid zlib header.
*
* Returns the size of the inflated data if @buf inflated to a value larger than 32KB,
* or if it contained a valid zlib header/footer; else, returns 0.
*
* Thus, it is recommended to provide more than 32KB of data in @buf for the most accurate results.
*/
int is_deflated(char *buf, size_t buf_size, int includes_zlib_header)
{
int flags = TINFL_FLAG_HAS_MORE_INPUT;
int retval = 0, decomp_size = 0;
if(includes_zlib_header)
{
flags |= TINFL_FLAG_PARSE_ZLIB_HEADER | TINFL_FLAG_COMPUTE_ADLER32;
}
retval = tinfl_decompress_mem_to_callback(buf, &buf_size, is_deflated_callback, (void *) &decomp_size, flags);
if(retval == 1 || decomp_size > BLOCK_SIZE)
{
return decomp_size;
}
return 0;
}
int inflate_raw_file_callback(const void *pBuf, int len, void *pUser)
{
if(fwrite(pBuf, 1, len, (FILE *) pUser) == len)
{
return 1;
}
return 0;
}
/* Inflates a file containing raw deflated data.
*
* @in_file - Input file containing raw deflated data.
* @out_file - Output file where inflated data will be saved.
*
* Returns void.
*/
void inflate_raw_file(char *in_file, char *out_file)
{
char *compressed_data = NULL;
size_t in_size = 0, nbytes = 0;
FILE *fp_in = NULL, *fp_out = NULL;
fp_in = fopen(in_file, "rb");
if(fp_in)
{
fp_out = fopen(out_file, "wb");
if(fp_out)
{
fseek(fp_in, 0L, SEEK_END);
in_size = ftell(fp_in);
fseek(fp_in, 0L, SEEK_SET);
compressed_data = malloc(in_size);
if(compressed_data)
{
memset(compressed_data, 0, in_size);
nbytes = fread(compressed_data, 1, in_size, fp_in);
if(nbytes > 0)
{
tinfl_decompress_mem_to_callback(compressed_data, &nbytes, inflate_raw_file_callback, (void *) fp_out, 0);
}
free(compressed_data);
}
}
}
if(fp_in) fclose(fp_in);
if(fp_out) fclose(fp_out);
return;
}
#endif // #ifndef TINFL_HEADER_FILE_ONLY
/*
......@@ -712,18 +596,3 @@ void inflate_raw_file(char *in_file, char *out_file)
For more information, please refer to <http://unlicense.org/>
*/
#ifdef MAIN
int main(int argc, char *argv[])
{
if(argc != 3)
{
fprintf(stderr, "Usage: %s <input file> <output file>\n", argv[0]);
return EXIT_FAILURE;
}
inflate_raw_file(argv[1], argv[2]);
return EXIT_SUCCESS;
}
#endif
src/C/miniz/tinfl_wrapper.c 0 → 100644
#include <stdio.h>
#include <string.h>
#include "tinfl.c"
// Checks to see if the first block of data in in_buf is valid zlib compressed data.
// Returns 1 if valid, 0 if invalid.
int is_valid_zlib_data(char *in_buf, size_t in_buf_size);
#define BLOCK_SIZE (32*1024)
char *inflate_block(char *buf, size_t buf_size)
{
size_t out_size = BLOCK_SIZE;
return (char *) tinfl_decompress_mem_to_heap((const void *) buf, buf_size, (size_t *) &out_size, 0);
}
/* CJH */
int is_deflated_callback(const void *pBuf, int len, void *pUser)
{
int *decomp_size = pUser;
*decomp_size += len;
if(len > 0)
{
return 1;
}
return 0;
}
/*
* Tries to determine if a given buffer contains valid deflated data.
*
* @buf - The buffer of data to check for deflated data.
* @buf_size - The size of @buf.
* @includes_zlib_header - Set to 1 if the buffer should start with a valid zlib header.
*
* Returns the size of the inflated data if @buf inflated to a value larger than 32KB,
* or if it contained a valid zlib header/footer; else, returns 0.
*
* Thus, it is recommended to provide more than 32KB of data in @buf for the most accurate results.
*/
int is_deflated(char *buf, size_t buf_size, int includes_zlib_header)
{
int flags = TINFL_FLAG_HAS_MORE_INPUT;
int retval = 0, decomp_size = 0;
if(includes_zlib_header)
{
flags |= TINFL_FLAG_PARSE_ZLIB_HEADER | TINFL_FLAG_COMPUTE_ADLER32;
}
retval = tinfl_decompress_mem_to_callback(buf, &buf_size, is_deflated_callback, (void *) &decomp_size, flags);
if(retval == 1 || decomp_size > BLOCK_SIZE)
{
return decomp_size;
}
return 0;
}
int inflate_raw_file_callback(const void *pBuf, int len, void *pUser)
{
if(fwrite(pBuf, 1, len, (FILE *) pUser) == len)
{
return 1;
}
return 0;
}
/* Inflates a file containing raw deflated data.
*
* @in_file - Input file containing raw deflated data.
* @out_file - Output file where inflated data will be saved.
*
* Returns void.
*/
void inflate_raw_file(char *in_file, char *out_file)
{
char *compressed_data = NULL;
size_t in_size = 0, nbytes = 0;
FILE *fp_in = NULL, *fp_out = NULL;
fp_in = fopen(in_file, "rb");
if(fp_in)
{
fp_out = fopen(out_file, "wb");
if(fp_out)
{
fseek(fp_in, 0L, SEEK_END);
in_size = ftell(fp_in);
fseek(fp_in, 0L, SEEK_SET);
compressed_data = malloc(in_size);
if(compressed_data)
{
memset(compressed_data, 0, in_size);
nbytes = fread(compressed_data, 1, in_size, fp_in);
if(nbytes > 0)
{
tinfl_decompress_mem_to_callback(compressed_data, &nbytes, inflate_raw_file_callback, (void *) fp_out, 0);
}
free(compressed_data);
}
}
}
if(fp_in) fclose(fp_in);
if(fp_out) fclose(fp_out);
return;
}
#ifdef MAIN
int main(int argc, char *argv[])
{
if(argc != 3)
{
fprintf(stderr, "Usage: %s <input file> <output file>\n", argv[0]);
return EXIT_FAILURE;
}
inflate_raw_file(argv[1], argv[2]);
return EXIT_SUCCESS;
}
#endif
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