352 lines
12 KiB
C
352 lines
12 KiB
C
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/* ioapi.c -- IO base function header for compress/uncompress .zip
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part of the MiniZip project
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Copyright (C) 1998-2010 Gilles Vollant
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http://www.winimage.com/zLibDll/minizip.html
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Modifications for Zip64 support
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Copyright (C) 2009-2010 Mathias Svensson
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http://result42.com
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This program is distributed under the terms of the same license as zlib.
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See the accompanying LICENSE file for the full text of the license.
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*/
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#include <stdlib.h>
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#include <string.h>
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#if defined unix || defined __APPLE__
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#include <sys/types.h>
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#include <unistd.h>
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#endif
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#include "ioapi.h"
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#if defined(_WIN32)
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# define snprintf _snprintf
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#endif
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voidpf call_zopen64(const zlib_filefunc64_32_def *pfilefunc, const void *filename, int mode)
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{
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if (pfilefunc->zfile_func64.zopen64_file != NULL)
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return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque, filename, mode);
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return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque, (const char*)filename, mode);
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}
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voidpf call_zopendisk64(const zlib_filefunc64_32_def *pfilefunc, voidpf filestream, uint32_t number_disk, int mode)
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{
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if (pfilefunc->zfile_func64.zopendisk64_file != NULL)
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return (*(pfilefunc->zfile_func64.zopendisk64_file)) (pfilefunc->zfile_func64.opaque, filestream, number_disk, mode);
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return (*(pfilefunc->zopendisk32_file))(pfilefunc->zfile_func64.opaque, filestream, number_disk, mode);
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}
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long call_zseek64(const zlib_filefunc64_32_def *pfilefunc, voidpf filestream, uint64_t offset, int origin)
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{
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uint32_t offset_truncated = 0;
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if (pfilefunc->zfile_func64.zseek64_file != NULL)
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return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
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offset_truncated = (uint32_t)offset;
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if (offset_truncated != offset)
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return -1;
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return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream, offset_truncated, origin);
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}
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uint64_t call_ztell64(const zlib_filefunc64_32_def *pfilefunc, voidpf filestream)
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{
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uint64_t position;
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if (pfilefunc->zfile_func64.zseek64_file != NULL)
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return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque, filestream);
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position = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque, filestream);
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if ((position) == UINT32_MAX)
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return (uint64_t)-1;
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return position;
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}
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void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def *p_filefunc64_32, const zlib_filefunc_def *p_filefunc32)
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{
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p_filefunc64_32->zfile_func64.zopen64_file = NULL;
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p_filefunc64_32->zfile_func64.zopendisk64_file = NULL;
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p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
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p_filefunc64_32->zopendisk32_file = p_filefunc32->zopendisk_file;
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p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
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p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
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p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
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p_filefunc64_32->zfile_func64.ztell64_file = NULL;
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p_filefunc64_32->zfile_func64.zseek64_file = NULL;
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p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
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p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
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p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
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p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
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p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
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}
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static voidpf ZCALLBACK fopen_file_func(voidpf opaque, const char *filename, int mode);
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static uint32_t ZCALLBACK fread_file_func(voidpf opaque, voidpf stream, void* buf, uint32_t size);
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static uint32_t ZCALLBACK fwrite_file_func(voidpf opaque, voidpf stream, const void *buf, uint32_t size);
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static uint64_t ZCALLBACK ftell64_file_func(voidpf opaque, voidpf stream);
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static long ZCALLBACK fseek64_file_func(voidpf opaque, voidpf stream, uint64_t offset, int origin);
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static int ZCALLBACK fclose_file_func(voidpf opaque, voidpf stream);
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static int ZCALLBACK ferror_file_func(voidpf opaque, voidpf stream);
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typedef struct
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{
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FILE *file;
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int filenameLength;
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void *filename;
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} FILE_IOPOSIX;
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static voidpf file_build_ioposix(FILE *file, const char *filename)
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{
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FILE_IOPOSIX *ioposix = NULL;
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if (file == NULL)
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return NULL;
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ioposix = (FILE_IOPOSIX*)malloc(sizeof(FILE_IOPOSIX));
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ioposix->file = file;
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ioposix->filenameLength = (int)strlen(filename) + 1;
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ioposix->filename = (char*)malloc(ioposix->filenameLength * sizeof(char));
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strncpy((char*)ioposix->filename, filename, ioposix->filenameLength);
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return (voidpf)ioposix;
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}
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static voidpf ZCALLBACK fopen_file_func(voidpf opaque, const char *filename, int mode)
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{
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FILE* file = NULL;
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const char *mode_fopen = NULL;
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if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ)
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mode_fopen = "rb";
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else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
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mode_fopen = "r+b";
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else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
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mode_fopen = "wb";
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if ((filename != NULL) && (mode_fopen != NULL))
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{
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file = fopen(filename, mode_fopen);
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return file_build_ioposix(file, filename);
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}
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return file;
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}
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static voidpf ZCALLBACK fopen64_file_func(voidpf opaque, const void *filename, int mode)
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{
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FILE* file = NULL;
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const char *mode_fopen = NULL;
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if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ)
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mode_fopen = "rb";
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else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
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mode_fopen = "r+b";
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else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
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mode_fopen = "wb";
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if ((filename != NULL) && (mode_fopen != NULL))
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{
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file = fopen64((const char*)filename, mode_fopen);
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return file_build_ioposix(file, (const char*)filename);
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}
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return file;
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}
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static voidpf ZCALLBACK fopendisk64_file_func(voidpf opaque, voidpf stream, uint32_t number_disk, int mode)
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{
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FILE_IOPOSIX *ioposix = NULL;
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char *diskFilename = NULL;
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voidpf ret = NULL;
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int i = 0;
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if (stream == NULL)
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return NULL;
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ioposix = (FILE_IOPOSIX*)stream;
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diskFilename = (char*)malloc(ioposix->filenameLength * sizeof(char));
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strncpy(diskFilename, (const char*)ioposix->filename, ioposix->filenameLength);
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for (i = ioposix->filenameLength - 1; i >= 0; i -= 1)
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{
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if (diskFilename[i] != '.')
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continue;
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snprintf(&diskFilename[i], ioposix->filenameLength - i, ".z%02u", number_disk + 1);
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break;
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}
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if (i >= 0)
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ret = fopen64_file_func(opaque, diskFilename, mode);
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free(diskFilename);
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return ret;
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}
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static voidpf ZCALLBACK fopendisk_file_func(voidpf opaque, voidpf stream, uint32_t number_disk, int mode)
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{
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FILE_IOPOSIX *ioposix = NULL;
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char *diskFilename = NULL;
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voidpf ret = NULL;
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int i = 0;
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if (stream == NULL)
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return NULL;
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ioposix = (FILE_IOPOSIX*)stream;
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diskFilename = (char*)malloc(ioposix->filenameLength * sizeof(char));
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strncpy(diskFilename, (const char*)ioposix->filename, ioposix->filenameLength);
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for (i = ioposix->filenameLength - 1; i >= 0; i -= 1)
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{
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if (diskFilename[i] != '.')
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continue;
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snprintf(&diskFilename[i], ioposix->filenameLength - i, ".z%02u", number_disk + 1);
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break;
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}
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if (i >= 0)
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ret = fopen_file_func(opaque, diskFilename, mode);
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free(diskFilename);
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return ret;
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}
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static uint32_t ZCALLBACK fread_file_func(voidpf opaque, voidpf stream, void* buf, uint32_t size)
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{
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FILE_IOPOSIX *ioposix = NULL;
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uint32_t read = (uint32_t)-1;
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if (stream == NULL)
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return read;
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ioposix = (FILE_IOPOSIX*)stream;
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read = (uint32_t)fread(buf, 1, (size_t)size, ioposix->file);
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return read;
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}
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static uint32_t ZCALLBACK fwrite_file_func(voidpf opaque, voidpf stream, const void *buf, uint32_t size)
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{
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FILE_IOPOSIX *ioposix = NULL;
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uint32_t written = (uint32_t)-1;
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if (stream == NULL)
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return written;
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ioposix = (FILE_IOPOSIX*)stream;
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written = (uint32_t)fwrite(buf, 1, (size_t)size, ioposix->file);
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return written;
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}
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static long ZCALLBACK ftell_file_func(voidpf opaque, voidpf stream)
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{
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FILE_IOPOSIX *ioposix = NULL;
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long ret = -1;
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if (stream == NULL)
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return ret;
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ioposix = (FILE_IOPOSIX*)stream;
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ret = ftell(ioposix->file);
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return ret;
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}
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static uint64_t ZCALLBACK ftell64_file_func(voidpf opaque, voidpf stream)
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{
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FILE_IOPOSIX *ioposix = NULL;
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uint64_t ret = (uint64_t)-1;
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if (stream == NULL)
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return ret;
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ioposix = (FILE_IOPOSIX*)stream;
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ret = ftello64(ioposix->file);
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return ret;
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}
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static long ZCALLBACK fseek_file_func(voidpf opaque, voidpf stream, uint32_t offset, int origin)
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{
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FILE_IOPOSIX *ioposix = NULL;
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int fseek_origin = 0;
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long ret = 0;
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if (stream == NULL)
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return -1;
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ioposix = (FILE_IOPOSIX*)stream;
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switch (origin)
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{
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case ZLIB_FILEFUNC_SEEK_CUR:
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fseek_origin = SEEK_CUR;
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break;
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case ZLIB_FILEFUNC_SEEK_END:
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fseek_origin = SEEK_END;
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break;
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case ZLIB_FILEFUNC_SEEK_SET:
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fseek_origin = SEEK_SET;
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break;
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default:
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return -1;
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}
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if (fseek(ioposix->file, offset, fseek_origin) != 0)
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ret = -1;
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return ret;
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}
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static long ZCALLBACK fseek64_file_func(voidpf opaque, voidpf stream, uint64_t offset, int origin)
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{
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FILE_IOPOSIX *ioposix = NULL;
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int fseek_origin = 0;
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long ret = 0;
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if (stream == NULL)
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return -1;
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ioposix = (FILE_IOPOSIX*)stream;
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switch (origin)
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{
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case ZLIB_FILEFUNC_SEEK_CUR:
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fseek_origin = SEEK_CUR;
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break;
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case ZLIB_FILEFUNC_SEEK_END:
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fseek_origin = SEEK_END;
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break;
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case ZLIB_FILEFUNC_SEEK_SET:
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fseek_origin = SEEK_SET;
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break;
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default:
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return -1;
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}
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if (fseeko64(ioposix->file, offset, fseek_origin) != 0)
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ret = -1;
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return ret;
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}
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static int ZCALLBACK fclose_file_func(voidpf opaque, voidpf stream)
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{
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FILE_IOPOSIX *ioposix = NULL;
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int ret = -1;
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if (stream == NULL)
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return ret;
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ioposix = (FILE_IOPOSIX*)stream;
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if (ioposix->filename != NULL)
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free(ioposix->filename);
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ret = fclose(ioposix->file);
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free(ioposix);
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return ret;
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}
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static int ZCALLBACK ferror_file_func(voidpf opaque, voidpf stream)
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{
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FILE_IOPOSIX *ioposix = NULL;
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int ret = -1;
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if (stream == NULL)
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return ret;
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ioposix = (FILE_IOPOSIX*)stream;
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ret = ferror(ioposix->file);
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return ret;
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}
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void fill_fopen_filefunc(zlib_filefunc_def *pzlib_filefunc_def)
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{
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pzlib_filefunc_def->zopen_file = fopen_file_func;
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pzlib_filefunc_def->zopendisk_file = fopendisk_file_func;
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pzlib_filefunc_def->zread_file = fread_file_func;
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pzlib_filefunc_def->zwrite_file = fwrite_file_func;
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pzlib_filefunc_def->ztell_file = ftell_file_func;
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pzlib_filefunc_def->zseek_file = fseek_file_func;
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pzlib_filefunc_def->zclose_file = fclose_file_func;
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pzlib_filefunc_def->zerror_file = ferror_file_func;
|
||
|
|
pzlib_filefunc_def->opaque = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
void fill_fopen64_filefunc(zlib_filefunc64_def *pzlib_filefunc_def)
|
||
|
|
{
|
||
|
|
pzlib_filefunc_def->zopen64_file = fopen64_file_func;
|
||
|
|
pzlib_filefunc_def->zopendisk64_file = fopendisk64_file_func;
|
||
|
|
pzlib_filefunc_def->zread_file = fread_file_func;
|
||
|
|
pzlib_filefunc_def->zwrite_file = fwrite_file_func;
|
||
|
|
pzlib_filefunc_def->ztell64_file = ftell64_file_func;
|
||
|
|
pzlib_filefunc_def->zseek64_file = fseek64_file_func;
|
||
|
|
pzlib_filefunc_def->zclose_file = fclose_file_func;
|
||
|
|
pzlib_filefunc_def->zerror_file = ferror_file_func;
|
||
|
|
pzlib_filefunc_def->opaque = NULL;
|
||
|
|
}
|