cannam@89: /* iowin32.c -- IO base function header for compress/uncompress .zip
cannam@89:      Version 1.1, February 14h, 2010
cannam@89:      part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
cannam@89: 
cannam@89:          Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
cannam@89: 
cannam@89:          Modifications for Zip64 support
cannam@89:          Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
cannam@89: 
cannam@89:      For more info read MiniZip_info.txt
cannam@89: 
cannam@89: */
cannam@89: 
cannam@89: #include <stdlib.h>
cannam@89: 
cannam@89: #include "zlib.h"
cannam@89: #include "ioapi.h"
cannam@89: #include "iowin32.h"
cannam@89: 
cannam@89: #ifndef INVALID_HANDLE_VALUE
cannam@89: #define INVALID_HANDLE_VALUE (0xFFFFFFFF)
cannam@89: #endif
cannam@89: 
cannam@89: #ifndef INVALID_SET_FILE_POINTER
cannam@89: #define INVALID_SET_FILE_POINTER ((DWORD)-1)
cannam@89: #endif
cannam@89: 
cannam@89: voidpf  ZCALLBACK win32_open_file_func  OF((voidpf opaque, const char* filename, int mode));
cannam@89: uLong   ZCALLBACK win32_read_file_func  OF((voidpf opaque, voidpf stream, void* buf, uLong size));
cannam@89: uLong   ZCALLBACK win32_write_file_func OF((voidpf opaque, voidpf stream, const void* buf, uLong size));
cannam@89: ZPOS64_T ZCALLBACK win32_tell64_file_func  OF((voidpf opaque, voidpf stream));
cannam@89: long    ZCALLBACK win32_seek64_file_func  OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin));
cannam@89: int     ZCALLBACK win32_close_file_func OF((voidpf opaque, voidpf stream));
cannam@89: int     ZCALLBACK win32_error_file_func OF((voidpf opaque, voidpf stream));
cannam@89: 
cannam@89: typedef struct
cannam@89: {
cannam@89:     HANDLE hf;
cannam@89:     int error;
cannam@89: } WIN32FILE_IOWIN;
cannam@89: 
cannam@89: 
cannam@89: static void win32_translate_open_mode(int mode,
cannam@89:                                       DWORD* lpdwDesiredAccess,
cannam@89:                                       DWORD* lpdwCreationDisposition,
cannam@89:                                       DWORD* lpdwShareMode,
cannam@89:                                       DWORD* lpdwFlagsAndAttributes)
cannam@89: {
cannam@89:     *lpdwDesiredAccess = *lpdwShareMode = *lpdwFlagsAndAttributes = *lpdwCreationDisposition = 0;
cannam@89: 
cannam@89:     if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
cannam@89:     {
cannam@89:         *lpdwDesiredAccess = GENERIC_READ;
cannam@89:         *lpdwCreationDisposition = OPEN_EXISTING;
cannam@89:         *lpdwShareMode = FILE_SHARE_READ;
cannam@89:     }
cannam@89:     else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
cannam@89:     {
cannam@89:         *lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
cannam@89:         *lpdwCreationDisposition = OPEN_EXISTING;
cannam@89:     }
cannam@89:     else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
cannam@89:     {
cannam@89:         *lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
cannam@89:         *lpdwCreationDisposition = CREATE_ALWAYS;
cannam@89:     }
cannam@89: }
cannam@89: 
cannam@89: static voidpf win32_build_iowin(HANDLE hFile)
cannam@89: {
cannam@89:     voidpf ret=NULL;
cannam@89: 
cannam@89:     if ((hFile != NULL) && (hFile != INVALID_HANDLE_VALUE))
cannam@89:     {
cannam@89:         WIN32FILE_IOWIN w32fiow;
cannam@89:         w32fiow.hf = hFile;
cannam@89:         w32fiow.error = 0;
cannam@89:         ret = malloc(sizeof(WIN32FILE_IOWIN));
cannam@89: 
cannam@89:         if (ret==NULL)
cannam@89:             CloseHandle(hFile);
cannam@89:         else
cannam@89:             *((WIN32FILE_IOWIN*)ret) = w32fiow;
cannam@89:     }
cannam@89:     return ret;
cannam@89: }
cannam@89: 
cannam@89: voidpf ZCALLBACK win32_open64_file_func (voidpf opaque,const void* filename,int mode)
cannam@89: {
cannam@89:     const char* mode_fopen = NULL;
cannam@89:     DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
cannam@89:     HANDLE hFile = NULL;
cannam@89: 
cannam@89:     win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
cannam@89: 
cannam@89:     if ((filename!=NULL) && (dwDesiredAccess != 0))
cannam@89:         hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
cannam@89: 
cannam@89:     return win32_build_iowin(hFile);
cannam@89: }
cannam@89: 
cannam@89: 
cannam@89: voidpf ZCALLBACK win32_open64_file_funcA (voidpf opaque,const void* filename,int mode)
cannam@89: {
cannam@89:     const char* mode_fopen = NULL;
cannam@89:     DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
cannam@89:     HANDLE hFile = NULL;
cannam@89: 
cannam@89:     win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
cannam@89: 
cannam@89:     if ((filename!=NULL) && (dwDesiredAccess != 0))
cannam@89:         hFile = CreateFileA((LPCSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
cannam@89: 
cannam@89:     return win32_build_iowin(hFile);
cannam@89: }
cannam@89: 
cannam@89: 
cannam@89: voidpf ZCALLBACK win32_open64_file_funcW (voidpf opaque,const void* filename,int mode)
cannam@89: {
cannam@89:     const char* mode_fopen = NULL;
cannam@89:     DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
cannam@89:     HANDLE hFile = NULL;
cannam@89: 
cannam@89:     win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
cannam@89: 
cannam@89:     if ((filename!=NULL) && (dwDesiredAccess != 0))
cannam@89:         hFile = CreateFileW((LPCWSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
cannam@89: 
cannam@89:     return win32_build_iowin(hFile);
cannam@89: }
cannam@89: 
cannam@89: 
cannam@89: voidpf ZCALLBACK win32_open_file_func (voidpf opaque,const char* filename,int mode)
cannam@89: {
cannam@89:     const char* mode_fopen = NULL;
cannam@89:     DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
cannam@89:     HANDLE hFile = NULL;
cannam@89: 
cannam@89:     win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
cannam@89: 
cannam@89:     if ((filename!=NULL) && (dwDesiredAccess != 0))
cannam@89:         hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
cannam@89: 
cannam@89:     return win32_build_iowin(hFile);
cannam@89: }
cannam@89: 
cannam@89: 
cannam@89: uLong ZCALLBACK win32_read_file_func (voidpf opaque, voidpf stream, void* buf,uLong size)
cannam@89: {
cannam@89:     uLong ret=0;
cannam@89:     HANDLE hFile = NULL;
cannam@89:     if (stream!=NULL)
cannam@89:         hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
cannam@89: 
cannam@89:     if (hFile != NULL)
cannam@89:     {
cannam@89:         if (!ReadFile(hFile, buf, size, &ret, NULL))
cannam@89:         {
cannam@89:             DWORD dwErr = GetLastError();
cannam@89:             if (dwErr == ERROR_HANDLE_EOF)
cannam@89:                 dwErr = 0;
cannam@89:             ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
cannam@89:         }
cannam@89:     }
cannam@89: 
cannam@89:     return ret;
cannam@89: }
cannam@89: 
cannam@89: 
cannam@89: uLong ZCALLBACK win32_write_file_func (voidpf opaque,voidpf stream,const void* buf,uLong size)
cannam@89: {
cannam@89:     uLong ret=0;
cannam@89:     HANDLE hFile = NULL;
cannam@89:     if (stream!=NULL)
cannam@89:         hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
cannam@89: 
cannam@89:     if (hFile != NULL)
cannam@89:     {
cannam@89:         if (!WriteFile(hFile, buf, size, &ret, NULL))
cannam@89:         {
cannam@89:             DWORD dwErr = GetLastError();
cannam@89:             if (dwErr == ERROR_HANDLE_EOF)
cannam@89:                 dwErr = 0;
cannam@89:             ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
cannam@89:         }
cannam@89:     }
cannam@89: 
cannam@89:     return ret;
cannam@89: }
cannam@89: 
cannam@89: long ZCALLBACK win32_tell_file_func (voidpf opaque,voidpf stream)
cannam@89: {
cannam@89:     long ret=-1;
cannam@89:     HANDLE hFile = NULL;
cannam@89:     if (stream!=NULL)
cannam@89:         hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
cannam@89:     if (hFile != NULL)
cannam@89:     {
cannam@89:         DWORD dwSet = SetFilePointer(hFile, 0, NULL, FILE_CURRENT);
cannam@89:         if (dwSet == INVALID_SET_FILE_POINTER)
cannam@89:         {
cannam@89:             DWORD dwErr = GetLastError();
cannam@89:             ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
cannam@89:             ret = -1;
cannam@89:         }
cannam@89:         else
cannam@89:             ret=(long)dwSet;
cannam@89:     }
cannam@89:     return ret;
cannam@89: }
cannam@89: 
cannam@89: ZPOS64_T ZCALLBACK win32_tell64_file_func (voidpf opaque, voidpf stream)
cannam@89: {
cannam@89:     ZPOS64_T ret= (ZPOS64_T)-1;
cannam@89:     HANDLE hFile = NULL;
cannam@89:     if (stream!=NULL)
cannam@89:         hFile = ((WIN32FILE_IOWIN*)stream)->hf;
cannam@89: 
cannam@89:     if (hFile)
cannam@89:     {
cannam@89:         LARGE_INTEGER li;
cannam@89:         li.QuadPart = 0;
cannam@89:         li.u.LowPart = SetFilePointer(hFile, li.u.LowPart, &li.u.HighPart, FILE_CURRENT);
cannam@89:         if ( (li.LowPart == 0xFFFFFFFF) && (GetLastError() != NO_ERROR))
cannam@89:         {
cannam@89:             DWORD dwErr = GetLastError();
cannam@89:             ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
cannam@89:             ret = (ZPOS64_T)-1;
cannam@89:         }
cannam@89:         else
cannam@89:             ret=li.QuadPart;
cannam@89:     }
cannam@89:     return ret;
cannam@89: }
cannam@89: 
cannam@89: 
cannam@89: long ZCALLBACK win32_seek_file_func (voidpf opaque,voidpf stream,uLong offset,int origin)
cannam@89: {
cannam@89:     DWORD dwMoveMethod=0xFFFFFFFF;
cannam@89:     HANDLE hFile = NULL;
cannam@89: 
cannam@89:     long ret=-1;
cannam@89:     if (stream!=NULL)
cannam@89:         hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
cannam@89:     switch (origin)
cannam@89:     {
cannam@89:     case ZLIB_FILEFUNC_SEEK_CUR :
cannam@89:         dwMoveMethod = FILE_CURRENT;
cannam@89:         break;
cannam@89:     case ZLIB_FILEFUNC_SEEK_END :
cannam@89:         dwMoveMethod = FILE_END;
cannam@89:         break;
cannam@89:     case ZLIB_FILEFUNC_SEEK_SET :
cannam@89:         dwMoveMethod = FILE_BEGIN;
cannam@89:         break;
cannam@89:     default: return -1;
cannam@89:     }
cannam@89: 
cannam@89:     if (hFile != NULL)
cannam@89:     {
cannam@89:         DWORD dwSet = SetFilePointer(hFile, offset, NULL, dwMoveMethod);
cannam@89:         if (dwSet == INVALID_SET_FILE_POINTER)
cannam@89:         {
cannam@89:             DWORD dwErr = GetLastError();
cannam@89:             ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
cannam@89:             ret = -1;
cannam@89:         }
cannam@89:         else
cannam@89:             ret=0;
cannam@89:     }
cannam@89:     return ret;
cannam@89: }
cannam@89: 
cannam@89: long ZCALLBACK win32_seek64_file_func (voidpf opaque, voidpf stream,ZPOS64_T offset,int origin)
cannam@89: {
cannam@89:     DWORD dwMoveMethod=0xFFFFFFFF;
cannam@89:     HANDLE hFile = NULL;
cannam@89:     long ret=-1;
cannam@89: 
cannam@89:     if (stream!=NULL)
cannam@89:         hFile = ((WIN32FILE_IOWIN*)stream)->hf;
cannam@89: 
cannam@89:     switch (origin)
cannam@89:     {
cannam@89:         case ZLIB_FILEFUNC_SEEK_CUR :
cannam@89:             dwMoveMethod = FILE_CURRENT;
cannam@89:             break;
cannam@89:         case ZLIB_FILEFUNC_SEEK_END :
cannam@89:             dwMoveMethod = FILE_END;
cannam@89:             break;
cannam@89:         case ZLIB_FILEFUNC_SEEK_SET :
cannam@89:             dwMoveMethod = FILE_BEGIN;
cannam@89:             break;
cannam@89:         default: return -1;
cannam@89:     }
cannam@89: 
cannam@89:     if (hFile)
cannam@89:     {
cannam@89:         LARGE_INTEGER* li = (LARGE_INTEGER*)&offset;
cannam@89:         DWORD dwSet = SetFilePointer(hFile, li->u.LowPart, &li->u.HighPart, dwMoveMethod);
cannam@89:         if (dwSet == INVALID_SET_FILE_POINTER)
cannam@89:         {
cannam@89:             DWORD dwErr = GetLastError();
cannam@89:             ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
cannam@89:             ret = -1;
cannam@89:         }
cannam@89:         else
cannam@89:             ret=0;
cannam@89:     }
cannam@89:     return ret;
cannam@89: }
cannam@89: 
cannam@89: int ZCALLBACK win32_close_file_func (voidpf opaque, voidpf stream)
cannam@89: {
cannam@89:     int ret=-1;
cannam@89: 
cannam@89:     if (stream!=NULL)
cannam@89:     {
cannam@89:         HANDLE hFile;
cannam@89:         hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
cannam@89:         if (hFile != NULL)
cannam@89:         {
cannam@89:             CloseHandle(hFile);
cannam@89:             ret=0;
cannam@89:         }
cannam@89:         free(stream);
cannam@89:     }
cannam@89:     return ret;
cannam@89: }
cannam@89: 
cannam@89: int ZCALLBACK win32_error_file_func (voidpf opaque,voidpf stream)
cannam@89: {
cannam@89:     int ret=-1;
cannam@89:     if (stream!=NULL)
cannam@89:     {
cannam@89:         ret = ((WIN32FILE_IOWIN*)stream) -> error;
cannam@89:     }
cannam@89:     return ret;
cannam@89: }
cannam@89: 
cannam@89: void fill_win32_filefunc (zlib_filefunc_def* pzlib_filefunc_def)
cannam@89: {
cannam@89:     pzlib_filefunc_def->zopen_file = win32_open_file_func;
cannam@89:     pzlib_filefunc_def->zread_file = win32_read_file_func;
cannam@89:     pzlib_filefunc_def->zwrite_file = win32_write_file_func;
cannam@89:     pzlib_filefunc_def->ztell_file = win32_tell_file_func;
cannam@89:     pzlib_filefunc_def->zseek_file = win32_seek_file_func;
cannam@89:     pzlib_filefunc_def->zclose_file = win32_close_file_func;
cannam@89:     pzlib_filefunc_def->zerror_file = win32_error_file_func;
cannam@89:     pzlib_filefunc_def->opaque = NULL;
cannam@89: }
cannam@89: 
cannam@89: void fill_win32_filefunc64(zlib_filefunc64_def* pzlib_filefunc_def)
cannam@89: {
cannam@89:     pzlib_filefunc_def->zopen64_file = win32_open64_file_func;
cannam@89:     pzlib_filefunc_def->zread_file = win32_read_file_func;
cannam@89:     pzlib_filefunc_def->zwrite_file = win32_write_file_func;
cannam@89:     pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
cannam@89:     pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
cannam@89:     pzlib_filefunc_def->zclose_file = win32_close_file_func;
cannam@89:     pzlib_filefunc_def->zerror_file = win32_error_file_func;
cannam@89:     pzlib_filefunc_def->opaque = NULL;
cannam@89: }
cannam@89: 
cannam@89: 
cannam@89: void fill_win32_filefunc64A(zlib_filefunc64_def* pzlib_filefunc_def)
cannam@89: {
cannam@89:     pzlib_filefunc_def->zopen64_file = win32_open64_file_funcA;
cannam@89:     pzlib_filefunc_def->zread_file = win32_read_file_func;
cannam@89:     pzlib_filefunc_def->zwrite_file = win32_write_file_func;
cannam@89:     pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
cannam@89:     pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
cannam@89:     pzlib_filefunc_def->zclose_file = win32_close_file_func;
cannam@89:     pzlib_filefunc_def->zerror_file = win32_error_file_func;
cannam@89:     pzlib_filefunc_def->opaque = NULL;
cannam@89: }
cannam@89: 
cannam@89: 
cannam@89: void fill_win32_filefunc64W(zlib_filefunc64_def* pzlib_filefunc_def)
cannam@89: {
cannam@89:     pzlib_filefunc_def->zopen64_file = win32_open64_file_funcW;
cannam@89:     pzlib_filefunc_def->zread_file = win32_read_file_func;
cannam@89:     pzlib_filefunc_def->zwrite_file = win32_write_file_func;
cannam@89:     pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
cannam@89:     pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
cannam@89:     pzlib_filefunc_def->zclose_file = win32_close_file_func;
cannam@89:     pzlib_filefunc_def->zerror_file = win32_error_file_func;
cannam@89:     pzlib_filefunc_def->opaque = NULL;
cannam@89: }