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Provide safer string copy than strncpy 

As per @boxerab suggestion in commit
b9ca882749
This commit is contained in:
mayeut 2015-09-25 22:04:58 +02:00
parent 4da7e9617f
commit 838dfb8058
5 changed files with 141 additions and 33 deletions
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72
src/bin/common/opj_string.h Normal file
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@ -0,0 +1,72 @@
/*
* The copyright in this software is being made available under the 2-clauses
* BSD License, included below. This software may be subject to other third
* party and contributor rights, including patent rights, and no such rights
* are granted under this license.
*
* Copyright (c) 2015, Matthieu Darbois
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef OPJ_STRING_H
#define OPJ_STRING_H
#include <errno.h>
#include <string.h>
/* strnlen is not standard, strlen_s is C11... */
/* keep in mind there still is a buffer read overflow possible */
static size_t opj_strnlen_s(const char *src, size_t max_len)
{
size_t len;
if (src == NULL) {
return 0U;
}
for (len = 0U; (*src != '\0') && (len < max_len); src++, len++);
return len;
}
/* should be equivalent to C11 function except for the handler */
/* keep in mind there still is a buffer read overflow possible */
static int opj_strcpy_s(char* dst, size_t dst_size, const char* src)
{
size_t src_len = 0U;
if ((dst == NULL) || (dst_size == 0U)) {
return EINVAL;
}
if (src == NULL) {
dst[0] = '\0';
return EINVAL;
}
src_len = opj_strnlen_s(src, dst_size);
if (src_len >= dst_size) {
return ERANGE;
}
memcpy(dst, src, src_len);
dst[src_len] = '\0';
return 0;
}
#endif /* OPJ_STRING_H */

1
src/bin/jp2/CMakeLists.txt
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@ -11,6 +11,7 @@ set(common_SRCS
${OPENJPEG_SOURCE_DIR}/src/bin/common/color.h
${OPENJPEG_SOURCE_DIR}/src/bin/common/opj_getopt.c
${OPENJPEG_SOURCE_DIR}/src/bin/common/opj_getopt.h
${OPENJPEG_SOURCE_DIR}/src/bin/common/opj_string.h
)
if(OPJ_HAVE_LIBTIFF)

32
src/bin/jp2/opj_compress.c
View File

@ -69,6 +69,7 @@
#include "index.h"
#include "format_defs.h"
#include "opj_string.h"
typedef struct dircnt{
/** Buffer for holding images read from Directory*/
@ -456,8 +457,10 @@ static char get_next_file(int imageno,dircnt_t *dirptr,img_fol_t *img_fol, opj_c
if (parameters->decod_format == -1)
return 1;
sprintf(infilename,"%s/%s",img_fol->imgdirpath,image_filename);
strncpy(parameters->infile, infilename, sizeof(infilename) - 1U);
if (opj_strcpy_s(parameters->infile, sizeof(parameters->infile), infilename) != 0) {
return 1;
}
/*Set output file*/
strcpy(temp_ofname,get_file_name(image_filename));
while((temp_p = strtok(NULL,".")) != NULL){
@ -466,7 +469,9 @@ static char get_next_file(int imageno,dircnt_t *dirptr,img_fol_t *img_fol, opj_c
}
if(img_fol->set_out_format==1){
sprintf(outfilename,"%s/%s.%s",img_fol->imgdirpath,temp_ofname,img_fol->out_format);
strncpy(parameters->outfile, outfilename, sizeof(outfilename) - 1U);
if (opj_strcpy_s(parameters->outfile, sizeof(parameters->outfile), outfilename) != 0) {
return 1;
}
}
return 0;
}
@ -474,7 +479,7 @@ static char get_next_file(int imageno,dircnt_t *dirptr,img_fol_t *img_fol, opj_c
/* ------------------------------------------------------------------------------------ */
static int parse_cmdline_encoder(int argc, char **argv, opj_cparameters_t *parameters,
img_fol_t *img_fol, raw_cparameters_t *raw_cp, char *indexfilename) {
img_fol_t *img_fol, raw_cparameters_t *raw_cp, char *indexfilename, size_t indexfilename_size) {
OPJ_UINT32 i, j;
int totlen, c;
opj_option_t long_option[]={
@ -528,7 +533,9 @@ static int parse_cmdline_encoder(int argc, char **argv, opj_cparameters_t *param
infile);
return 1;
}
strncpy(parameters->infile, infile, sizeof(parameters->infile)-1);
if (opj_strcpy_s(parameters->infile, sizeof(parameters->infile), infile) != 0) {
return 1;
}
}
break;
@ -546,7 +553,9 @@ static int parse_cmdline_encoder(int argc, char **argv, opj_cparameters_t *param
fprintf(stderr, "Unknown output format image %s [only *.j2k, *.j2c or *.jp2]!! \n", outfile);
return 1;
}
strncpy(parameters->outfile, outfile, sizeof(parameters->outfile)-1);
if (opj_strcpy_s(parameters->outfile, sizeof(parameters->outfile), outfile) != 0) {
return 1;
}
}
break;
@ -812,8 +821,9 @@ static int parse_cmdline_encoder(int argc, char **argv, opj_cparameters_t *param
case 'x': /* creation of index file */
{
char *index = opj_optarg;
strncpy(indexfilename, index, OPJ_PATH_LEN);
if (opj_strcpy_s(indexfilename, indexfilename_size, opj_optarg) != 0) {
return 1;
}
/* FIXME ADE INDEX >> */
fprintf(stderr,
"[WARNING] Index file generation is currently broken.\n"
@ -1133,7 +1143,9 @@ static int parse_cmdline_encoder(int argc, char **argv, opj_cparameters_t *param
/* we need to enable indexing */
if (!indexfilename || !*indexfilename) {
strncpy(indexfilename, JPWL_PRIVATEINDEX_NAME, OPJ_PATH_LEN);
if (opj_strcpy_s(indexfilename, indexfilename_size, JPWL_PRIVATEINDEX_NAME) != 0) {
return 1;
}
}
/* search for different protection methods */
@ -1622,7 +1634,7 @@ int main(int argc, char **argv) {
/* parse input and get user encoding parameters */
parameters.tcp_mct = (char) 255; /* This will be set later according to the input image or the provided option */
if(parse_cmdline_encoder(argc, argv, &parameters,&img_fol, &raw_cp, indexfilename) == 1) {
if(parse_cmdline_encoder(argc, argv, &parameters,&img_fol, &raw_cp, indexfilename, sizeof(indexfilename)) == 1) {
return 1;
}

49
src/bin/jp2/opj_decompress.c
View File

@ -75,6 +75,7 @@
#include "color.h"
#include "format_defs.h"
#include "opj_string.h"
typedef struct dircnt{
/** Buffer for holding images read from Directory*/
@ -121,6 +122,8 @@ typedef struct opj_decompress_params
int decod_format;
/** output file format 0: PGX, 1: PxM, 2: BMP */
int cod_format;
/** index file name */
char indexfilename[OPJ_PATH_LEN];
/** Decoding area left boundary */
OPJ_UINT32 DA_x0;
@ -157,7 +160,7 @@ int get_file_format(const char *filename);
char get_next_file(int imageno,dircnt_t *dirptr,img_fol_t *img_fol, opj_decompress_parameters *parameters);
static int infile_format(const char *fname);
int parse_cmdline_decoder(int argc, char **argv, opj_decompress_parameters *parameters,img_fol_t *img_fol, char *indexfilename);
int parse_cmdline_decoder(int argc, char **argv, opj_decompress_parameters *parameters,img_fol_t *img_fol);
int parse_DA_values( char* inArg, unsigned int *DA_x0, unsigned int *DA_y0, unsigned int *DA_x1, unsigned int *DA_y1);
static opj_image_t* convert_gray_to_rgb(opj_image_t* original);
@ -429,7 +432,9 @@ char get_next_file(int imageno,dircnt_t *dirptr,img_fol_t *img_fol, opj_decompre
parameters->decod_format = infile_format(infilename);
if (parameters->decod_format == -1)
return 1;
strncpy(parameters->infile, infilename, sizeof(infilename));
if (opj_strcpy_s(parameters->infile, sizeof(parameters->infile), infilename) != 0) {
return 1;
}
/*Set output file*/
strcpy(temp_ofname,strtok(image_filename,"."));
@ -439,7 +444,9 @@ char get_next_file(int imageno,dircnt_t *dirptr,img_fol_t *img_fol, opj_decompre
}
if(img_fol->set_out_format==1){
sprintf(outfilename,"%s/%s.%s",img_fol->imgdirpath,temp_ofname,img_fol->out_format);
strncpy(parameters->outfile, outfilename, sizeof(outfilename));
if (opj_strcpy_s(parameters->outfile, sizeof(parameters->outfile), outfilename) != 0) {
return 1;
}
}
return 0;
}
@ -505,7 +512,7 @@ static int infile_format(const char *fname)
* Parse the command line
*/
/* -------------------------------------------------------------------------- */
int parse_cmdline_decoder(int argc, char **argv, opj_decompress_parameters *parameters,img_fol_t *img_fol, char *indexfilename) {
int parse_cmdline_decoder(int argc, char **argv, opj_decompress_parameters *parameters,img_fol_t *img_fol) {
/* parse the command line */
int totlen, c;
opj_option_t long_option[]={
@ -561,7 +568,10 @@ int parse_cmdline_decoder(int argc, char **argv, opj_decompress_parameters *para
infile);
return 1;
}
strncpy(parameters->infile, infile, sizeof(parameters->infile)-1);
if (opj_strcpy_s(parameters->infile, sizeof(parameters->infile), infile) != 0) {
fprintf(stderr, "[ERROR] Path is too long\n");
return 1;
}
}
break;
@ -592,7 +602,10 @@ int parse_cmdline_decoder(int argc, char **argv, opj_decompress_parameters *para
fprintf(stderr, "Unknown output format image %s [only *.pnm, *.pgm, *.ppm, *.pgx, *.bmp, *.tif, *.raw or *.tga]!! \n", outfile);
return 1;
}
strncpy(parameters->outfile, outfile, sizeof(parameters->outfile)-1);
if (opj_strcpy_s(parameters->outfile, sizeof(parameters->outfile), outfile) != 0) {
fprintf(stderr, "[ERROR] Path is too long\n");
return 1;
}
}
break;
@ -676,11 +689,14 @@ int parse_cmdline_decoder(int argc, char **argv, opj_decompress_parameters *para
case 'd': /* Input decode ROI */
{
int size_optarg = (int)strlen(opj_optarg) + 1;
char *ROI_values = (char*) malloc((size_t)size_optarg);
size_t size_optarg = (size_t)strlen(opj_optarg) + 1U;
char *ROI_values = (char*) malloc(size_optarg);
if (ROI_values == NULL) {
fprintf(stderr, "[ERROR] Couldn't allocate memory\n");
return 1;
}
ROI_values[0] = '\0';
strncpy(ROI_values, opj_optarg, strlen(opj_optarg));
ROI_values[strlen(opj_optarg)] = '\0';
memcpy(ROI_values, opj_optarg, size_optarg);
/*printf("ROI_values = %s [%d / %d]\n", ROI_values, strlen(ROI_values), size_optarg ); */
parse_DA_values( ROI_values, &parameters->DA_x0, &parameters->DA_y0, &parameters->DA_x1, &parameters->DA_y1);
@ -701,8 +717,10 @@ int parse_cmdline_decoder(int argc, char **argv, opj_decompress_parameters *para
case 'x': /* Creation of index file */
{
char *index = opj_optarg;
strncpy(indexfilename, index, OPJ_PATH_LEN);
if (opj_strcpy_s(parameters->indexfilename, sizeof(parameters->indexfilename), opj_optarg) != 0) {
fprintf(stderr, "[ERROR] Path is too long\n");
return 1;
}
}
break;
@ -1167,8 +1185,6 @@ int main(int argc, char **argv)
opj_codec_t* l_codec = NULL; /* Handle to a decompressor */
opj_codestream_index_t* cstr_index = NULL;
char indexfilename[OPJ_PATH_LEN]; /* index file name */
OPJ_INT32 num_images, imageno;
img_fol_t img_fol;
dircnt_t *dirptr = NULL;
@ -1179,14 +1195,11 @@ int main(int argc, char **argv)
/* set decoding parameters to default values */
set_default_parameters(&parameters);
/* FIXME Initialize indexfilename and img_fol */
*indexfilename = 0;
/* Initialize img_fol */
memset(&img_fol,0,sizeof(img_fol_t));
/* parse input and get user encoding parameters */
if(parse_cmdline_decoder(argc, argv, &parameters,&img_fol, indexfilename) == 1) {
if(parse_cmdline_decoder(argc, argv, &parameters,&img_fol) == 1) {
destroy_parameters(&parameters);
return EXIT_FAILURE;
}

20
src/bin/jp2/opj_dump.c
View File

@ -57,6 +57,7 @@
#include "index.h"
#include "format_defs.h"
#include "opj_string.h"
typedef struct dircnt{
/** Buffer for holding images read from Directory*/
@ -196,7 +197,9 @@ static char get_next_file(int imageno,dircnt_t *dirptr,img_fol_t *img_fol, opj_d
if (parameters->decod_format == -1)
return 1;
sprintf(infilename,"%s/%s",img_fol->imgdirpath,image_filename);
strncpy(parameters->infile, infilename, sizeof(infilename));
if (opj_strcpy_s(parameters->infile, sizeof(parameters->infile), infilename) != 0) {
return 1;
}
/*Set output file*/
strcpy(temp_ofname,strtok(image_filename,"."));
@ -206,7 +209,9 @@ static char get_next_file(int imageno,dircnt_t *dirptr,img_fol_t *img_fol, opj_d
}
if(img_fol->set_out_format==1){
sprintf(outfilename,"%s/%s.%s",img_fol->imgdirpath,temp_ofname,img_fol->out_format);
strncpy(parameters->outfile, outfilename, sizeof(outfilename));
if (opj_strcpy_s(parameters->outfile, sizeof(parameters->outfile), outfilename) != 0) {
return 1;
}
}
return 0;
}
@ -303,7 +308,10 @@ static int parse_cmdline_decoder(int argc, char **argv, opj_dparameters_t *param
infile);
return 1;
}
strncpy(parameters->infile, infile, sizeof(parameters->infile)-1);
if (opj_strcpy_s(parameters->infile, sizeof(parameters->infile), infile) != 0) {
fprintf(stderr, "[ERROR] Path is too long\n");
return 1;
}
}
break;
@ -311,8 +319,10 @@ static int parse_cmdline_decoder(int argc, char **argv, opj_dparameters_t *param
case 'o': /* output file */
{
char *outfile = opj_optarg;
strncpy(parameters->outfile, outfile, sizeof(parameters->outfile)-1);
if (opj_strcpy_s(parameters->outfile, sizeof(parameters->outfile), opj_optarg) != 0) {
fprintf(stderr, "[ERROR] Path is too long\n");
return 1;
}
}
break;