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Security and warning fixes for minizip. [gvollant] 

Remove unused code and unnecessary test for free().
This commit is contained in:
Mark Adler 2022-10-06 15:49:04 -07:00
parent 9b291c9f01
commit 138c93cffb
2 changed files with 4 additions and 7 deletions
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4
contrib/minizip/unzip.c
View File

@ -112,7 +112,7 @@
# define ALLOC(size) (malloc(size))
#endif
#ifndef TRYFREE
# define TRYFREE(p) {if (p) free(p);}
# define TRYFREE(p) { free(p);}
#endif
#define SIZECENTRALDIRITEM (0x2e)
@ -1566,6 +1566,7 @@ extern int ZEXPORT unzOpenCurrentFile3 (unzFile file, int* method,
pfile_in_zip_read_info->stream_initialised=Z_BZIP2ED;
else
{
TRYFREE(pfile_in_zip_read_info->read_buffer);
TRYFREE(pfile_in_zip_read_info);
return err;
}
@ -1586,6 +1587,7 @@ extern int ZEXPORT unzOpenCurrentFile3 (unzFile file, int* method,
pfile_in_zip_read_info->stream_initialised=Z_DEFLATED;
else
{
TRYFREE(pfile_in_zip_read_info->read_buffer);
TRYFREE(pfile_in_zip_read_info);
return err;
}

7
contrib/minizip/zip.c
View File

@ -1471,11 +1471,6 @@ extern int ZEXPORT zipWriteInFileInZip (zipFile file,const void* buf,unsigned in
{
uLong uTotalOutBefore = zi->ci.stream.total_out;
err=deflate(&zi->ci.stream, Z_NO_FLUSH);
if(uTotalOutBefore > zi->ci.stream.total_out)
{
int bBreak = 0;
bBreak++;
}
zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
}
@ -1959,7 +1954,7 @@ extern int ZEXPORT zipRemoveExtraInfoBlock (char* pData, int* dataLen, short sHe
int retVal = ZIP_OK;
if(pData == NULL || *dataLen < 4)
if(pData == NULL || dataLen == NULL || *dataLen < 4)
return ZIP_PARAMERROR;
pNewHeader = (char*)ALLOC((unsigned)*dataLen);