added generic support for listing and extracting zip files (using minizip)
authorHolger Schemel <info@artsoft.org>
Wed, 9 Jan 2019 23:05:48 +0000 (00:05 +0100)
committerHolger Schemel <info@artsoft.org>
Sat, 12 Jan 2019 19:44:23 +0000 (20:44 +0100)
12 files changed:
src/Android.mk
src/Makefile
src/libgame/Makefile
src/libgame/libgame.h
src/libgame/zip/ioapi.c [new file with mode: 0644]
src/libgame/zip/ioapi.h [new file with mode: 0644]
src/libgame/zip/iowin32.c [new file with mode: 0644]
src/libgame/zip/iowin32.h [new file with mode: 0644]
src/libgame/zip/miniunz.c [new file with mode: 0644]
src/libgame/zip/miniunz.h [new file with mode: 0644]
src/libgame/zip/unzip.c [new file with mode: 0644]
src/libgame/zip/unzip.h [new file with mode: 0644]

index a5b714e..a9b7506 100644 (file)
@@ -47,6 +47,10 @@ LOCAL_SRC_FILES := $(SDL_PATH)/src/main/android/SDL_android_main.c \
        libgame/setup.c                 \
        libgame/misc.c                  \
        libgame/sdl.c                   \
+       libgame/zip/ioapi.c             \
+       libgame/zip/iowin32.c           \
+       libgame/zip/unzip.c             \
+       libgame/zip/miniunz.c           \
        game_em/cave.c                  \
        game_em/convert.c               \
        game_em/graphics.c              \
@@ -107,6 +111,6 @@ LOCAL_SRC_FILES := $(SDL_PATH)/src/main/android/SDL_android_main.c \
 
 LOCAL_SHARED_LIBRARIES := SDL2 SDL2_image SDL2_mixer SDL2_net smpeg2
 
-LOCAL_LDLIBS := -lGLESv1_CM -lGLESv2 -llog
+LOCAL_LDLIBS := -lGLESv1_CM -lGLESv2 -llog -lz
 
 include $(BUILD_SHARED_LIBRARY)
index 0c195c0..e42d537 100644 (file)
@@ -114,7 +114,7 @@ OPTIONS = -O3 -Wall
 endif
 
 CFLAGS = $(OPTIONS) $(SYS_CFLAGS)  $(EXTRA_CFLAGS) $(CONFIG)
-LDFLAGS =           $(SYS_LDFLAGS) $(EXTRA_LDFLAGS) -lm
+LDFLAGS =           $(SYS_LDFLAGS) $(EXTRA_LDFLAGS) -lm -lz
 
 
 SRCS = main.c          \
index 4693c22..8b2b602 100644 (file)
@@ -24,7 +24,11 @@ SRCS =       system.c        \
        hash.c          \
        setup.c         \
        misc.c          \
-       sdl.c
+       sdl.c           \
+       zip/ioapi.c     \
+       zip/iowin32.c   \
+       zip/unzip.c     \
+       zip/miniunz.c
 
 OBJS = system.o        \
        gadgets.o       \
@@ -37,7 +41,11 @@ OBJS =       system.o        \
        hash.o          \
        setup.o         \
        misc.o          \
-       sdl.o
+       sdl.o           \
+       zip/ioapi.o     \
+       zip/iowin32.o   \
+       zip/unzip.o     \
+       zip/miniunz.o
 
 LIBGAME = libgame.a
 
@@ -53,7 +61,7 @@ $(LIBGAME): $(OBJS)
        $(RANLIB) $(LIBGAME)
 
 .c.o:
-       $(CC) $(PROFILING) $(CFLAGS) -c $*.c
+       $(CC) $(PROFILING) $(CFLAGS) -c $*.c -o $*.o
 
 clean:
        $(RM) $(OBJS)
index 419d3b7..e5aab80 100644 (file)
@@ -26,5 +26,6 @@
 #include "image.h"
 #include "setup.h"
 #include "misc.h"
+#include "zip/miniunz.h"
 
 #endif // LIBGAME_H
diff --git a/src/libgame/zip/ioapi.c b/src/libgame/zip/ioapi.c
new file mode 100644 (file)
index 0000000..5b6fcc6
--- /dev/null
@@ -0,0 +1,353 @@
+/* ioapi.c -- IO base function header for compress/uncompress .zip
+   part of the MiniZip project
+
+   Copyright (C) 2012-2017 Nathan Moinvaziri
+     https://github.com/nmoinvaz/minizip
+   Modifications for Zip64 support
+     Copyright (C) 2009-2010 Mathias Svensson
+     http://result42.com
+   Copyright (C) 1998-2010 Gilles Vollant
+     http://www.winimage.com/zLibDll/minizip.html
+
+   This program is distributed under the terms of the same license as zlib.
+   See the accompanying LICENSE file for the full text of the license.
+*/
+
+#include <stdlib.h>
+#include <string.h>
+
+#if defined unix || defined __APPLE__
+#include <sys/types.h>
+#include <unistd.h>
+#endif
+
+#include "ioapi.h"
+
+#if defined(_WIN32)
+#  define snprintf _snprintf
+#endif
+
+voidpf call_zopen64(const zlib_filefunc64_32_def *pfilefunc, const void *filename, int mode)
+{
+    if (pfilefunc->zfile_func64.zopen64_file != NULL)
+        return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque, filename, mode);
+    return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque, (const char*)filename, mode);
+}
+
+voidpf call_zopendisk64(const zlib_filefunc64_32_def *pfilefunc, voidpf filestream, uint32_t number_disk, int mode)
+{
+    if (pfilefunc->zfile_func64.zopendisk64_file != NULL)
+        return (*(pfilefunc->zfile_func64.zopendisk64_file)) (pfilefunc->zfile_func64.opaque, filestream, number_disk, mode);
+    return (*(pfilefunc->zopendisk32_file))(pfilefunc->zfile_func64.opaque, filestream, number_disk, mode);
+}
+
+long call_zseek64(const zlib_filefunc64_32_def *pfilefunc, voidpf filestream, uint64_t offset, int origin)
+{
+    uint32_t offset_truncated = 0;
+    if (pfilefunc->zfile_func64.zseek64_file != NULL)
+        return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
+    offset_truncated = (uint32_t)offset;
+    if (offset_truncated != offset)
+        return -1;
+    return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream, offset_truncated, origin);
+}
+
+uint64_t call_ztell64(const zlib_filefunc64_32_def *pfilefunc, voidpf filestream)
+{
+    uint64_t position;
+    if (pfilefunc->zfile_func64.zseek64_file != NULL)
+        return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque, filestream);
+    position = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque, filestream);
+    if ((position) == UINT32_MAX)
+        return (uint64_t)-1;
+    return position;
+}
+
+void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def *p_filefunc64_32, const zlib_filefunc_def *p_filefunc32)
+{
+    p_filefunc64_32->zfile_func64.zopen64_file = NULL;
+    p_filefunc64_32->zfile_func64.zopendisk64_file = NULL;
+    p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
+    p_filefunc64_32->zopendisk32_file = p_filefunc32->zopendisk_file;
+    p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
+    p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
+    p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
+    p_filefunc64_32->zfile_func64.ztell64_file = NULL;
+    p_filefunc64_32->zfile_func64.zseek64_file = NULL;
+    p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
+    p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
+    p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
+    p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
+    p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
+}
+
+static voidpf   ZCALLBACK fopen_file_func(ZIP_UNUSED voidpf opaque, const char *filename, int mode);
+static uint32_t ZCALLBACK fread_file_func(voidpf opaque, voidpf stream, void* buf, uint32_t size);
+static uint32_t ZCALLBACK fwrite_file_func(voidpf opaque, voidpf stream, const void *buf, uint32_t size);
+static uint64_t ZCALLBACK ftell64_file_func(voidpf opaque, voidpf stream);
+static long     ZCALLBACK fseek64_file_func(voidpf opaque, voidpf stream, uint64_t offset, int origin);
+static int      ZCALLBACK fclose_file_func(voidpf opaque, voidpf stream);
+static int      ZCALLBACK ferror_file_func(voidpf opaque, voidpf stream);
+
+typedef struct
+{
+    FILE *file;
+    int filenameLength;
+    void *filename;
+} FILE_IOPOSIX;
+
+static voidpf file_build_ioposix(FILE *file, const char *filename)
+{
+    FILE_IOPOSIX *ioposix = NULL;
+    if (file == NULL)
+        return NULL;
+    ioposix = (FILE_IOPOSIX*)malloc(sizeof(FILE_IOPOSIX));
+    ioposix->file = file;
+    ioposix->filenameLength = (int)strlen(filename) + 1;
+    ioposix->filename = (char*)malloc(ioposix->filenameLength * sizeof(char));
+    strncpy((char*)ioposix->filename, filename, ioposix->filenameLength);
+    return (voidpf)ioposix;
+}
+
+static voidpf ZCALLBACK fopen_file_func(ZIP_UNUSED voidpf opaque, const char *filename, int mode)
+{
+    FILE* file = NULL;
+    const char *mode_fopen = NULL;
+    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ)
+        mode_fopen = "rb";
+    else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
+        mode_fopen = "r+b";
+    else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
+        mode_fopen = "wb";
+
+    if ((filename != NULL) && (mode_fopen != NULL))
+    {
+        file = fopen(filename, mode_fopen);
+        return file_build_ioposix(file, filename);
+    }
+    return file;
+}
+
+static voidpf ZCALLBACK fopen64_file_func(ZIP_UNUSED voidpf opaque, const void *filename, int mode)
+{
+    FILE* file = NULL;
+    const char *mode_fopen = NULL;
+    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ)
+        mode_fopen = "rb";
+    else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
+        mode_fopen = "r+b";
+    else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
+        mode_fopen = "wb";
+
+    if ((filename != NULL) && (mode_fopen != NULL))
+    {
+        file = fopen64((const char*)filename, mode_fopen);
+        return file_build_ioposix(file, (const char*)filename);
+    }
+    return file;
+}
+
+static voidpf ZCALLBACK fopendisk64_file_func(voidpf opaque, voidpf stream, uint32_t number_disk, int mode)
+{
+    FILE_IOPOSIX *ioposix = NULL;
+    char *diskFilename = NULL;
+    voidpf ret = NULL;
+    int i = 0;
+
+    if (stream == NULL)
+        return NULL;
+    ioposix = (FILE_IOPOSIX*)stream;
+    diskFilename = (char*)malloc(ioposix->filenameLength * sizeof(char));
+    strncpy(diskFilename, (const char*)ioposix->filename, ioposix->filenameLength);
+    for (i = ioposix->filenameLength - 1; i >= 0; i -= 1)
+    {
+        if (diskFilename[i] != '.')
+            continue;
+        snprintf(&diskFilename[i], ioposix->filenameLength - i, ".z%02u", number_disk + 1);
+        break;
+    }
+    if (i >= 0)
+        ret = fopen64_file_func(opaque, diskFilename, mode);
+    free(diskFilename);
+    return ret;
+}
+
+static voidpf ZCALLBACK fopendisk_file_func(voidpf opaque, voidpf stream, uint32_t number_disk, int mode)
+{
+    FILE_IOPOSIX *ioposix = NULL;
+    char *diskFilename = NULL;
+    voidpf ret = NULL;
+    int i = 0;
+
+    if (stream == NULL)
+        return NULL;
+    ioposix = (FILE_IOPOSIX*)stream;
+    diskFilename = (char*)malloc(ioposix->filenameLength * sizeof(char));
+    strncpy(diskFilename, (const char*)ioposix->filename, ioposix->filenameLength);
+    for (i = ioposix->filenameLength - 1; i >= 0; i -= 1)
+    {
+        if (diskFilename[i] != '.')
+            continue;
+        snprintf(&diskFilename[i], ioposix->filenameLength - i, ".z%02u", number_disk + 1);
+        break;
+    }
+    if (i >= 0)
+        ret = fopen_file_func(opaque, diskFilename, mode);
+    free(diskFilename);
+    return ret;
+}
+
+static uint32_t ZCALLBACK fread_file_func(ZIP_UNUSED voidpf opaque, voidpf stream, void* buf, uint32_t size)
+{
+    FILE_IOPOSIX *ioposix = NULL;
+    uint32_t read = (uint32_t)-1;
+    if (stream == NULL)
+        return read;
+    ioposix = (FILE_IOPOSIX*)stream;
+    read = (uint32_t)fread(buf, 1, (size_t)size, ioposix->file);
+    return read;
+}
+
+static uint32_t ZCALLBACK fwrite_file_func(ZIP_UNUSED voidpf opaque, voidpf stream, const void *buf, uint32_t size)
+{
+    FILE_IOPOSIX *ioposix = NULL;
+    uint32_t written = (uint32_t)-1;
+    if (stream == NULL)
+        return written;
+    ioposix = (FILE_IOPOSIX*)stream;
+    written = (uint32_t)fwrite(buf, 1, (size_t)size, ioposix->file);
+    return written;
+}
+
+static long ZCALLBACK ftell_file_func(ZIP_UNUSED voidpf opaque, voidpf stream)
+{
+    FILE_IOPOSIX *ioposix = NULL;
+    long ret = -1;
+    if (stream == NULL)
+        return ret;
+    ioposix = (FILE_IOPOSIX*)stream;
+    ret = ftell(ioposix->file);
+    return ret;
+}
+
+static uint64_t ZCALLBACK ftell64_file_func(ZIP_UNUSED voidpf opaque, voidpf stream)
+{
+    FILE_IOPOSIX *ioposix = NULL;
+    uint64_t ret = (uint64_t)-1;
+    if (stream == NULL)
+        return ret;
+    ioposix = (FILE_IOPOSIX*)stream;
+    ret = ftello64(ioposix->file);
+    return ret;
+}
+
+static long ZCALLBACK fseek_file_func(ZIP_UNUSED voidpf opaque, voidpf stream, uint32_t offset, int origin)
+{
+    FILE_IOPOSIX *ioposix = NULL;
+    int fseek_origin = 0;
+    long ret = 0;
+
+    if (stream == NULL)
+        return -1;
+    ioposix = (FILE_IOPOSIX*)stream;
+
+    switch (origin)
+    {
+        case ZLIB_FILEFUNC_SEEK_CUR:
+            fseek_origin = SEEK_CUR;
+            break;
+        case ZLIB_FILEFUNC_SEEK_END:
+            fseek_origin = SEEK_END;
+            break;
+        case ZLIB_FILEFUNC_SEEK_SET:
+            fseek_origin = SEEK_SET;
+            break;
+        default:
+            return -1;
+    }
+    if (fseek(ioposix->file, offset, fseek_origin) != 0)
+        ret = -1;
+    return ret;
+}
+
+static long ZCALLBACK fseek64_file_func(ZIP_UNUSED voidpf opaque, voidpf stream, uint64_t offset, int origin)
+{
+    FILE_IOPOSIX *ioposix = NULL;
+    int fseek_origin = 0;
+    long ret = 0;
+
+    if (stream == NULL)
+        return -1;
+    ioposix = (FILE_IOPOSIX*)stream;
+
+    switch (origin)
+    {
+        case ZLIB_FILEFUNC_SEEK_CUR:
+            fseek_origin = SEEK_CUR;
+            break;
+        case ZLIB_FILEFUNC_SEEK_END:
+            fseek_origin = SEEK_END;
+            break;
+        case ZLIB_FILEFUNC_SEEK_SET:
+            fseek_origin = SEEK_SET;
+            break;
+        default:
+            return -1;
+    }
+
+    if (fseeko64(ioposix->file, offset, fseek_origin) != 0)
+        ret = -1;
+
+    return ret;
+}
+
+static int ZCALLBACK fclose_file_func(ZIP_UNUSED voidpf opaque, voidpf stream)
+{
+    FILE_IOPOSIX *ioposix = NULL;
+    int ret = -1;
+    if (stream == NULL)
+        return ret;
+    ioposix = (FILE_IOPOSIX*)stream;
+    if (ioposix->filename != NULL)
+        free(ioposix->filename);
+    ret = fclose(ioposix->file);
+    free(ioposix);
+    return ret;
+}
+
+static int ZCALLBACK ferror_file_func(ZIP_UNUSED voidpf opaque, voidpf stream)
+{
+    FILE_IOPOSIX *ioposix = NULL;
+    int ret = -1;
+    if (stream == NULL)
+        return ret;
+    ioposix = (FILE_IOPOSIX*)stream;
+    ret = ferror(ioposix->file);
+    return ret;
+}
+
+void fill_fopen_filefunc(zlib_filefunc_def *pzlib_filefunc_def)
+{
+    pzlib_filefunc_def->zopen_file = fopen_file_func;
+    pzlib_filefunc_def->zopendisk_file = fopendisk_file_func;
+    pzlib_filefunc_def->zread_file = fread_file_func;
+    pzlib_filefunc_def->zwrite_file = fwrite_file_func;
+    pzlib_filefunc_def->ztell_file = ftell_file_func;
+    pzlib_filefunc_def->zseek_file = fseek_file_func;
+    pzlib_filefunc_def->zclose_file = fclose_file_func;
+    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;
+}
diff --git a/src/libgame/zip/ioapi.h b/src/libgame/zip/ioapi.h
new file mode 100644 (file)
index 0000000..3527ad6
--- /dev/null
@@ -0,0 +1,170 @@
+/* ioapi.h -- IO base function header for compress/uncompress .zip
+   part of the MiniZip project
+
+   Copyright (C) 2012-2017 Nathan Moinvaziri
+     https://github.com/nmoinvaz/minizip
+   Copyright (C) 2009-2010 Mathias Svensson
+     Modifications for Zip64 support
+     http://result42.com
+   Copyright (C) 1998-2010 Gilles Vollant
+     http://www.winimage.com/zLibDll/minizip.html
+
+   This program is distributed under the terms of the same license as zlib.
+   See the accompanying LICENSE file for the full text of the license.
+*/
+
+#ifndef _ZLIBIOAPI64_H
+#define _ZLIBIOAPI64_H
+
+#if defined(__linux__)
+// Linux needs this to support file operation on files larger then 4+GB
+#  ifndef __USE_FILE_OFFSET64
+#  define __USE_FILE_OFFSET64
+#  endif
+#  ifndef __USE_LARGEFILE64
+#  define __USE_LARGEFILE64
+#  endif
+#  ifndef _LARGEFILE64_SOURCE
+#  define _LARGEFILE64_SOURCE
+#  endif
+#  ifndef _FILE_OFFSET_BIT
+#  define _FILE_OFFSET_BIT 64
+#  endif
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include "zlib.h"
+
+#ifdef __GNUC__
+#  define ZIP_UNUSED __attribute__((__unused__))
+#else
+#  define ZIP_UNUSED
+#endif
+
+#if defined(USE_FILE32API)
+#  define fopen64 fopen
+#  define ftello64 ftell
+#  define fseeko64 fseek
+#else
+#  if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__OpenBSD__) || defined(__APPLE__) || defined(__ANDROID__)
+#    define fopen64 fopen
+#    define ftello64 ftello
+#    define fseeko64 fseeko
+#  endif
+#  ifdef _MSC_VER
+#    define fopen64 fopen
+#    if (_MSC_VER >= 1400) && (!(defined(NO_MSCVER_FILE64_FUNC)))
+#      define ftello64 _ftelli64
+#      define fseeko64 _fseeki64
+#    else /* old MSC */
+#      define ftello64 ftell
+#      define fseeko64 fseek
+#    endif
+#  endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ZLIB_FILEFUNC_SEEK_CUR (1)
+#define ZLIB_FILEFUNC_SEEK_END (2)
+#define ZLIB_FILEFUNC_SEEK_SET (0)
+
+#define ZLIB_FILEFUNC_MODE_READ             (1)
+#define ZLIB_FILEFUNC_MODE_WRITE            (2)
+#define ZLIB_FILEFUNC_MODE_READWRITEFILTER  (3)
+#define ZLIB_FILEFUNC_MODE_EXISTING         (4)
+#define ZLIB_FILEFUNC_MODE_CREATE           (8)
+
+#ifndef ZCALLBACK
+#  if (defined(WIN32) || defined(_WIN32) || defined (WINDOWS) || \
+       defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK)
+#    define ZCALLBACK CALLBACK
+#  else
+#    define ZCALLBACK
+#  endif
+#endif
+
+typedef voidpf   (ZCALLBACK *open_file_func)     (voidpf opaque, const char *filename, int mode);
+typedef voidpf   (ZCALLBACK *opendisk_file_func) (voidpf opaque, voidpf stream, uint32_t number_disk, int mode);
+typedef uint32_t (ZCALLBACK *read_file_func)     (voidpf opaque, voidpf stream, void* buf, uint32_t size);
+typedef uint32_t (ZCALLBACK *write_file_func)    (voidpf opaque, voidpf stream, const void *buf, uint32_t size);
+typedef int      (ZCALLBACK *close_file_func)    (voidpf opaque, voidpf stream);
+typedef int      (ZCALLBACK *error_file_func)    (voidpf opaque, voidpf stream);
+
+typedef long     (ZCALLBACK *tell_file_func)     (voidpf opaque, voidpf stream);
+typedef long     (ZCALLBACK *seek_file_func)     (voidpf opaque, voidpf stream, uint32_t offset, int origin);
+
+/* here is the "old" 32 bits structure structure */
+typedef struct zlib_filefunc_def_s
+{
+    open_file_func      zopen_file;
+    opendisk_file_func  zopendisk_file;
+    read_file_func      zread_file;
+    write_file_func     zwrite_file;
+    tell_file_func      ztell_file;
+    seek_file_func      zseek_file;
+    close_file_func     zclose_file;
+    error_file_func     zerror_file;
+    voidpf              opaque;
+} zlib_filefunc_def;
+
+typedef uint64_t (ZCALLBACK *tell64_file_func)    (voidpf opaque, voidpf stream);
+typedef long     (ZCALLBACK *seek64_file_func)    (voidpf opaque, voidpf stream, uint64_t offset, int origin);
+typedef voidpf   (ZCALLBACK *open64_file_func)    (voidpf opaque, const void *filename, int mode);
+typedef voidpf   (ZCALLBACK *opendisk64_file_func)(voidpf opaque, voidpf stream, uint32_t number_disk, int mode);
+
+typedef struct zlib_filefunc64_def_s
+{
+    open64_file_func     zopen64_file;
+    opendisk64_file_func zopendisk64_file;
+    read_file_func       zread_file;
+    write_file_func      zwrite_file;
+    tell64_file_func     ztell64_file;
+    seek64_file_func     zseek64_file;
+    close_file_func      zclose_file;
+    error_file_func      zerror_file;
+    voidpf               opaque;
+} zlib_filefunc64_def;
+
+void fill_fopen_filefunc(zlib_filefunc_def *pzlib_filefunc_def);
+void fill_fopen64_filefunc(zlib_filefunc64_def *pzlib_filefunc_def);
+
+/* now internal definition, only for zip.c and unzip.h */
+typedef struct zlib_filefunc64_32_def_s
+{
+    zlib_filefunc64_def zfile_func64;
+    open_file_func      zopen32_file;
+    opendisk_file_func  zopendisk32_file;
+    tell_file_func      ztell32_file;
+    seek_file_func      zseek32_file;
+} zlib_filefunc64_32_def;
+
+#define ZREAD64(filefunc,filestream,buf,size)       ((*((filefunc).zfile_func64.zread_file))        ((filefunc).zfile_func64.opaque,filestream,buf,size))
+#define ZWRITE64(filefunc,filestream,buf,size)      ((*((filefunc).zfile_func64.zwrite_file))       ((filefunc).zfile_func64.opaque,filestream,buf,size))
+/*#define ZTELL64(filefunc,filestream)                ((*((filefunc).ztell64_file))                   ((filefunc).opaque,filestream))*/
+/*#define ZSEEK64(filefunc,filestream,pos,mode)       ((*((filefunc).zseek64_file))                   ((filefunc).opaque,filestream,pos,mode))*/
+#define ZCLOSE64(filefunc,filestream)               ((*((filefunc).zfile_func64.zclose_file))       ((filefunc).zfile_func64.opaque,filestream))
+#define ZERROR64(filefunc,filestream)               ((*((filefunc).zfile_func64.zerror_file))       ((filefunc).zfile_func64.opaque,filestream))
+
+voidpf   call_zopen64(const zlib_filefunc64_32_def *pfilefunc,const void*filename, int mode);
+voidpf   call_zopendisk64(const zlib_filefunc64_32_def *pfilefunc, voidpf filestream, uint32_t number_disk, int mode);
+long     call_zseek64(const zlib_filefunc64_32_def *pfilefunc, voidpf filestream, uint64_t offset, int origin);
+uint64_t call_ztell64(const zlib_filefunc64_32_def *pfilefunc, voidpf filestream);
+
+void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def *p_filefunc64_32, const zlib_filefunc_def *p_filefunc32);
+
+#define ZOPEN64(filefunc,filename,mode)             (call_zopen64((&(filefunc)),(filename),(mode)))
+#define ZOPENDISK64(filefunc,filestream,diskn,mode) (call_zopendisk64((&(filefunc)),(filestream),(diskn),(mode)))
+#define ZTELL64(filefunc,filestream)                (call_ztell64((&(filefunc)),(filestream)))
+#define ZSEEK64(filefunc,filestream,pos,mode)       (call_zseek64((&(filefunc)),(filestream),(pos),(mode)))
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/libgame/zip/iowin32.c b/src/libgame/zip/iowin32.c
new file mode 100644 (file)
index 0000000..53a96e6
--- /dev/null
@@ -0,0 +1,591 @@
+/* iowin32.c -- IO base function header for compress/uncompress .zip
+   Version 1.2.0, September 16th, 2017
+   part of the MiniZip project
+
+   Copyright (C) 2012-2017 Nathan Moinvaziri
+     https://github.com/nmoinvaz/minizip
+   Copyright (C) 2009-2010 Mathias Svensson
+     Modifications for Zip64 support
+     http://result42.com
+   Copyright (C) 1998-2010 Gilles Vollant
+     http://www.winimage.com/zLibDll/minizip.html
+
+   This program is distributed under the terms of the same license as zlib.
+   See the accompanying LICENSE file for the full text of the license.
+*/
+
+#ifdef _WIN32
+
+#include <stdlib.h>
+#include <tchar.h>
+
+#include "zlib.h"
+#include "ioapi.h"
+#include "iowin32.h"
+
+#ifndef INVALID_HANDLE_VALUE
+#  define INVALID_HANDLE_VALUE (0xFFFFFFFF)
+#endif
+
+#ifndef INVALID_SET_FILE_POINTER
+#  define INVALID_SET_FILE_POINTER ((DWORD)-1)
+#endif
+
+#if defined(WINAPI_FAMILY_PARTITION) && (!(defined(IOWIN32_USING_WINRT_API)))
+#  if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+#    define IOWIN32_USING_WINRT_API 1
+#  endif
+#endif
+
+voidpf   ZCALLBACK win32_open_file_func     (voidpf opaque, const char *filename, int mode);
+uint32_t ZCALLBACK win32_read_file_func     (voidpf opaque, voidpf stream, void* buf, uint32_t size);
+uint32_t ZCALLBACK win32_write_file_func    (voidpf opaque, voidpf stream, const void *buf, uint32_t size);
+uint64_t ZCALLBACK win32_tell64_file_func   (voidpf opaque, voidpf stream);
+long     ZCALLBACK win32_seek64_file_func   (voidpf opaque, voidpf stream, uint64_t offset, int origin);
+int      ZCALLBACK win32_close_file_func    (voidpf opaque, voidpf stream);
+int      ZCALLBACK win32_error_file_func    (voidpf opaque, voidpf stream);
+
+typedef struct
+{
+    HANDLE hf;
+    int error;
+    void *filename;
+    int filenameLength;
+} WIN32FILE_IOWIN;
+
+
+static void win32_translate_open_mode(int mode,
+                                      DWORD* lpdwDesiredAccess,
+                                      DWORD* lpdwCreationDisposition,
+                                      DWORD* lpdwShareMode,
+                                      DWORD* lpdwFlagsAndAttributes)
+{
+    *lpdwDesiredAccess = 0;
+    *lpdwShareMode = 0;
+    *lpdwCreationDisposition = 0;
+    *lpdwFlagsAndAttributes = FILE_ATTRIBUTE_NORMAL;
+
+    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ)
+    {
+        *lpdwDesiredAccess = GENERIC_READ;
+        *lpdwCreationDisposition = OPEN_EXISTING;
+        *lpdwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
+    }
+    else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
+    {
+        *lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
+        *lpdwCreationDisposition = OPEN_EXISTING;
+    }
+    else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
+    {
+        *lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
+        *lpdwCreationDisposition = CREATE_ALWAYS;
+    }
+}
+
+static voidpf win32_build_iowin(HANDLE hFile)
+{
+    WIN32FILE_IOWIN *iowin = NULL;
+
+    if ((hFile != NULL) && (hFile != INVALID_HANDLE_VALUE))
+    {
+        iowin = (WIN32FILE_IOWIN *)malloc(sizeof(WIN32FILE_IOWIN));
+        if (iowin == NULL)
+        {
+            CloseHandle(hFile);
+            return NULL;
+        }
+        memset(iowin, 0, sizeof(WIN32FILE_IOWIN));
+        iowin->hf = hFile;
+    }
+    return (voidpf)iowin;
+}
+
+static voidpf ZCALLBACK win32_open64_file_func(voidpf opaque, const void *filename, int mode)
+{
+    DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes;
+    HANDLE hFile = NULL;
+    WIN32FILE_IOWIN *iowin = NULL;
+
+    win32_translate_open_mode(mode, &dwDesiredAccess, &dwCreationDisposition, &dwShareMode, &dwFlagsAndAttributes);
+
+    if ((filename != NULL) && (dwDesiredAccess != 0))
+    {
+#ifdef IOWIN32_USING_WINRT_API
+#ifdef UNICODE
+        hFile = CreateFile2((LPCTSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
+#else
+        WCHAR filenameW[FILENAME_MAX + 0x200 + 1];
+        MultiByteToWideChar(CP_ACP, 0, (const char*)filename, -1, filenameW, FILENAME_MAX + 0x200);
+        hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
+#endif
+#else
+        hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
+#endif
+    }
+
+    iowin = win32_build_iowin(hFile);
+    if (iowin == NULL)
+        return NULL;
+    iowin->filenameLength = _tcslen(filename) + 1;
+    iowin->filename = (void*)malloc(iowin->filenameLength * sizeof(TCHAR));
+    _tcsncpy(iowin->filename, filename, iowin->filenameLength);
+    return iowin;
+}
+
+static voidpf ZCALLBACK win32_open64_file_funcA(voidpf opaque, const void *filename, int mode)
+{
+    DWORD dwDesiredAccess, dwCreationDisposition, dwShareMode, dwFlagsAndAttributes ;
+    HANDLE hFile = NULL;
+    WIN32FILE_IOWIN *iowin = NULL;
+
+    win32_translate_open_mode(mode, &dwDesiredAccess, &dwCreationDisposition, &dwShareMode, &dwFlagsAndAttributes);
+
+    if ((filename != NULL) && (dwDesiredAccess != 0))
+    {
+#ifdef IOWIN32_USING_WINRT_API
+        WCHAR filenameW[FILENAME_MAX + 0x200 + 1];
+        MultiByteToWideChar(CP_ACP, 0, (const char*)filename, -1, filenameW, FILENAME_MAX + 0x200);
+        hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
+#else
+        hFile = CreateFileA((LPCSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
+#endif
+    }
+
+    iowin = win32_build_iowin(hFile);
+    if (iowin == NULL)
+        return NULL;
+    iowin->filenameLength = strlen(filename) + 1;
+    iowin->filename = (void*)malloc(iowin->filenameLength * sizeof(char));
+    strncpy(iowin->filename, filename, iowin->filenameLength);
+    return iowin;
+}
+
+static voidpf ZCALLBACK win32_open64_file_funcW(voidpf opaque, const void *filename, int mode)
+{
+    DWORD dwDesiredAccess, dwCreationDisposition, dwShareMode, dwFlagsAndAttributes;
+    HANDLE hFile = NULL;
+    WIN32FILE_IOWIN *iowin = NULL;
+
+    win32_translate_open_mode(mode, &dwDesiredAccess, &dwCreationDisposition, &dwShareMode, &dwFlagsAndAttributes);
+
+    if ((filename != NULL) && (dwDesiredAccess != 0))
+    {
+#ifdef IOWIN32_USING_WINRT_API
+        hFile = CreateFile2((LPCWSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
+#else
+        hFile = CreateFileW((LPCWSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
+#endif
+    }
+
+    iowin = win32_build_iowin(hFile);
+    if (iowin == NULL)
+        return NULL;
+    if (iowin->filename == NULL)
+    {
+        iowin->filenameLength = wcslen(filename) + 1;
+        iowin->filename = (void*)malloc(iowin->filenameLength * sizeof(WCHAR));
+        wcsncpy(iowin->filename, filename, iowin->filenameLength);
+    }
+    return iowin;
+}
+
+voidpf ZCALLBACK win32_open_file_func(voidpf opaque, const char *filename, int mode)
+{
+    DWORD dwDesiredAccess, dwCreationDisposition, dwShareMode, dwFlagsAndAttributes ;
+    HANDLE hFile = NULL;
+    WIN32FILE_IOWIN *iowin = NULL;
+
+    win32_translate_open_mode(mode, &dwDesiredAccess, &dwCreationDisposition, &dwShareMode, &dwFlagsAndAttributes);
+
+    if ((filename != NULL) && (dwDesiredAccess != 0))
+    {
+#ifdef IOWIN32_USING_WINRT_API
+#ifdef UNICODE
+        hFile = CreateFile2((LPCTSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
+#else
+        WCHAR filenameW[FILENAME_MAX + 0x200 + 1];
+        MultiByteToWideChar(CP_ACP, 0, (const char*)filename, -1, filenameW, FILENAME_MAX + 0x200);
+        hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
+#endif
+#else
+        hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
+#endif
+    }
+
+    iowin = win32_build_iowin(hFile);
+    if (iowin == NULL)
+        return NULL;
+    iowin->filenameLength = _tcslen((TCHAR*)filename) + 1;
+    iowin->filename = (void*)malloc(iowin->filenameLength * sizeof(TCHAR));
+    _tcsncpy(iowin->filename, (TCHAR*)filename, iowin->filenameLength);
+    return iowin;
+}
+
+static voidpf ZCALLBACK win32_opendisk64_file_func(voidpf opaque, voidpf stream, uint32_t number_disk, int mode)
+{
+    WIN32FILE_IOWIN *iowin = NULL;
+    TCHAR *diskFilename = NULL;
+    voidpf ret = NULL;
+    int i = 0;
+
+    if (stream == NULL)
+        return NULL;
+    iowin = (WIN32FILE_IOWIN*)stream;
+    diskFilename = (TCHAR*)malloc(iowin->filenameLength * sizeof(TCHAR));
+    _tcsncpy(diskFilename, iowin->filename, iowin->filenameLength);
+    for (i = iowin->filenameLength - 1; i >= 0; i -= 1)
+    {
+        if (diskFilename[i] != _T('.'))
+            continue;
+        _sntprintf(&diskFilename[i], iowin->filenameLength - i, _T(".z%02d"), number_disk + 1);
+        break;
+    }
+    if (i >= 0)
+        ret = win32_open64_file_func(opaque, (char*)diskFilename, mode);
+    free(diskFilename);
+    return ret;
+}
+
+static voidpf ZCALLBACK win32_opendisk64_file_funcW(voidpf opaque, voidpf stream, uint32_t number_disk, int mode)
+{
+    WIN32FILE_IOWIN *iowin = NULL;
+    WCHAR *diskFilename = NULL;
+    voidpf ret = NULL;
+    int i = 0;
+
+    if (stream == NULL)
+        return NULL;
+    iowin = (WIN32FILE_IOWIN*)stream;
+    diskFilename = (WCHAR*)malloc((iowin->filenameLength + 10) * sizeof(WCHAR));
+    wcsncpy(diskFilename, iowin->filename, iowin->filenameLength);
+    for (i = iowin->filenameLength - 1; i >= 0; i -= 1)
+    {
+        if (diskFilename[i] != L'.')
+            continue;
+        _snwprintf(&diskFilename[i], (iowin->filenameLength + 10) - i, L".z%02d", number_disk + 1);
+        break;
+    }
+    if (i >= 0)
+        ret = win32_open64_file_funcW(opaque, diskFilename, mode);
+    free(diskFilename);
+    return ret;
+}
+
+static voidpf ZCALLBACK win32_opendisk64_file_funcA(voidpf opaque, voidpf stream, uint32_t number_disk, int mode)
+{
+    WIN32FILE_IOWIN *iowin = NULL;
+    char *diskFilename = NULL;
+    voidpf ret = NULL;
+    int i = 0;
+
+    if (stream == NULL)
+        return NULL;
+    iowin = (WIN32FILE_IOWIN*)stream;
+    diskFilename = (char*)malloc(iowin->filenameLength * sizeof(char));
+    strncpy(diskFilename, iowin->filename, iowin->filenameLength);
+    for (i = iowin->filenameLength - 1; i >= 0; i -= 1)
+    {
+        if (diskFilename[i] != '.')
+            continue;
+        _snprintf(&diskFilename[i], iowin->filenameLength - i, ".z%02d", number_disk + 1);
+        break;
+    }
+    if (i >= 0)
+        ret = win32_open64_file_funcA(opaque, diskFilename, mode);
+    free(diskFilename);
+    return ret;
+}
+
+static voidpf ZCALLBACK win32_opendisk_file_func(voidpf opaque, voidpf stream, uint32_t number_disk, int mode)
+{
+    WIN32FILE_IOWIN *iowin = NULL;
+    TCHAR *diskFilename = NULL;
+    voidpf ret = NULL;
+    int i = 0;
+
+    if (stream == NULL)
+        return NULL;
+    iowin = (WIN32FILE_IOWIN*)stream;
+    diskFilename = (TCHAR*)malloc(iowin->filenameLength * sizeof(TCHAR));
+    _tcsncpy(diskFilename, iowin->filename, iowin->filenameLength);
+    for (i = iowin->filenameLength - 1; i >= 0; i -= 1)
+    {
+        if (diskFilename[i] != _T('.'))
+            continue;
+        _sntprintf(&diskFilename[i], iowin->filenameLength - i, _T(".z%02d"), number_disk + 1);
+        break;
+    }
+    if (i >= 0)
+        ret = win32_open_file_func(opaque, (char*)diskFilename, mode);
+    free(diskFilename);
+    return ret;
+}
+
+uint32_t ZCALLBACK win32_read_file_func(voidpf opaque, voidpf stream, void* buf, uint32_t size)
+{
+    DWORD ret = 0;
+    HANDLE hFile = NULL;
+    if (stream != NULL)
+        hFile = ((WIN32FILE_IOWIN*)stream)->hf;
+
+    if (hFile != NULL)
+    {
+        if (!ReadFile(hFile, buf, size, &ret, NULL))
+        {
+            DWORD dwErr = GetLastError();
+            if (dwErr == ERROR_HANDLE_EOF)
+                dwErr = 0;
+            ((WIN32FILE_IOWIN*)stream)->error = (int)dwErr;
+        }
+    }
+
+    return (uint32_t)ret;
+}
+
+uint32_t ZCALLBACK win32_write_file_func(voidpf opaque, voidpf stream, const void *buf, uint32_t size)
+{
+    DWORD ret = 0;
+    HANDLE hFile = NULL;
+    if (stream != NULL)
+        hFile = ((WIN32FILE_IOWIN*)stream)->hf;
+
+    if (hFile != NULL)
+    {
+        if (!WriteFile(hFile, buf, size, &ret, NULL))
+        {
+            DWORD dwErr = GetLastError();
+            if (dwErr == ERROR_HANDLE_EOF)
+                dwErr = 0;
+            ((WIN32FILE_IOWIN*)stream)->error = (int)dwErr;
+        }
+    }
+
+    return (uint32_t)ret;
+}
+
+static BOOL win32_setfilepointer_internal(HANDLE hFile, LARGE_INTEGER pos, LARGE_INTEGER *newPos, DWORD dwMoveMethod)
+{
+#ifdef IOWIN32_USING_WINRT_API
+    return SetFilePointerEx(hFile, pos, newPos, dwMoveMethod);
+#else
+    LONG lHigh = pos.HighPart;
+    BOOL ret = TRUE;
+    DWORD dwNewPos = SetFilePointer(hFile, pos.LowPart, &lHigh, dwMoveMethod);
+    if ((dwNewPos == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR))
+        ret = FALSE;
+    if ((newPos != NULL) && (ret))
+    {
+        newPos->LowPart = dwNewPos;
+        newPos->HighPart = lHigh;
+    }
+    return ret;
+#endif
+}
+
+static long ZCALLBACK win32_tell_file_func(voidpf opaque, voidpf stream)
+{
+    long ret = -1;
+    HANDLE hFile = NULL;
+    if (stream != NULL)
+        hFile = ((WIN32FILE_IOWIN*)stream)->hf;
+    if (hFile != NULL)
+    {
+        LARGE_INTEGER pos;
+        pos.QuadPart = 0;
+        if (!win32_setfilepointer_internal(hFile, pos, &pos, FILE_CURRENT))
+        {
+            DWORD dwErr = GetLastError();
+            ((WIN32FILE_IOWIN*)stream)->error = (int)dwErr;
+            ret = -1;
+        }
+        else
+            ret = (long)pos.LowPart;
+    }
+    return ret;
+}
+
+uint64_t ZCALLBACK win32_tell64_file_func(voidpf opaque, voidpf stream)
+{
+    uint64_t ret = (uint64_t)-1;
+    HANDLE hFile = NULL;
+    if (stream != NULL)
+        hFile = ((WIN32FILE_IOWIN*)stream)->hf;
+
+    if (hFile)
+    {
+        LARGE_INTEGER pos;
+        pos.QuadPart = 0;
+        if (!win32_setfilepointer_internal(hFile, pos, &pos, FILE_CURRENT))
+        {
+            DWORD dwErr = GetLastError();
+            ((WIN32FILE_IOWIN*)stream)->error = (int)dwErr;
+            ret = (uint64_t)-1;
+        }
+        else
+            ret = pos.QuadPart;
+    }
+    return ret;
+}
+
+static long ZCALLBACK win32_seek_file_func(voidpf opaque, voidpf stream, uint32_t offset, int origin)
+{
+    DWORD dwMoveMethod = 0xFFFFFFFF;
+    HANDLE hFile = NULL;
+    long ret = -1;
+
+    if (stream != NULL)
+        hFile = ((WIN32FILE_IOWIN*)stream)->hf;
+
+    switch (origin)
+    {
+        case ZLIB_FILEFUNC_SEEK_CUR:
+            dwMoveMethod = FILE_CURRENT;
+            break;
+        case ZLIB_FILEFUNC_SEEK_END:
+            dwMoveMethod = FILE_END;
+            break;
+        case ZLIB_FILEFUNC_SEEK_SET:
+            dwMoveMethod = FILE_BEGIN;
+            break;
+        default:
+            return -1;
+    }
+
+    if (hFile != NULL)
+    {
+        LARGE_INTEGER pos;
+        pos.QuadPart = offset;
+        if (!win32_setfilepointer_internal(hFile, pos, NULL, dwMoveMethod))
+        {
+            DWORD dwErr = GetLastError();
+            ((WIN32FILE_IOWIN*)stream)->error = (int)dwErr;
+            ret = -1;
+        }
+        else
+            ret = 0;
+    }
+    return ret;
+}
+
+long ZCALLBACK win32_seek64_file_func(voidpf opaque, voidpf stream, uint64_t offset, int origin)
+{
+    DWORD dwMoveMethod = 0xFFFFFFFF;
+    HANDLE hFile = NULL;
+    long ret = -1;
+
+    if (stream != NULL)
+        hFile = ((WIN32FILE_IOWIN*)stream)->hf;
+
+    switch (origin)
+    {
+        case ZLIB_FILEFUNC_SEEK_CUR:
+            dwMoveMethod = FILE_CURRENT;
+            break;
+        case ZLIB_FILEFUNC_SEEK_END:
+            dwMoveMethod = FILE_END;
+            break;
+        case ZLIB_FILEFUNC_SEEK_SET:
+            dwMoveMethod = FILE_BEGIN;
+            break;
+        default:
+            return -1;
+    }
+
+    if (hFile)
+    {
+        LARGE_INTEGER pos;
+        pos.QuadPart = offset;
+        if (!win32_setfilepointer_internal(hFile, pos, NULL, dwMoveMethod))
+        {
+            DWORD dwErr = GetLastError();
+            ((WIN32FILE_IOWIN*)stream)->error = (int)dwErr;
+            ret = -1;
+        }
+        else
+            ret = 0;
+    }
+    return ret;
+}
+
+int ZCALLBACK win32_close_file_func(voidpf opaque, voidpf stream)
+{
+    WIN32FILE_IOWIN* iowin = NULL;
+    int ret = -1;
+
+    if (stream == NULL)
+        return ret;
+    iowin = ((WIN32FILE_IOWIN*)stream);
+    if (iowin->filename != NULL)
+        free(iowin->filename);
+    if (iowin->hf != NULL)
+    {
+        CloseHandle(iowin->hf);
+        ret=0;
+    }
+    free(stream);
+    return ret;
+}
+
+int ZCALLBACK win32_error_file_func(voidpf opaque, voidpf stream)
+{
+    int ret = -1;
+    if (stream == NULL)
+        return ret;
+    ret = ((WIN32FILE_IOWIN*)stream)->error;
+    return ret;
+}
+
+void fill_win32_filefunc(zlib_filefunc_def *pzlib_filefunc_def)
+{
+    pzlib_filefunc_def->zopen_file = win32_open_file_func;
+    pzlib_filefunc_def->zopendisk_file = win32_opendisk_file_func;
+    pzlib_filefunc_def->zread_file = win32_read_file_func;
+    pzlib_filefunc_def->zwrite_file = win32_write_file_func;
+    pzlib_filefunc_def->ztell_file = win32_tell_file_func;
+    pzlib_filefunc_def->zseek_file = win32_seek_file_func;
+    pzlib_filefunc_def->zclose_file = win32_close_file_func;
+    pzlib_filefunc_def->zerror_file = win32_error_file_func;
+    pzlib_filefunc_def->opaque = NULL;
+}
+
+void fill_win32_filefunc64(zlib_filefunc64_def *pzlib_filefunc_def)
+{
+    pzlib_filefunc_def->zopen64_file = win32_open64_file_func;
+    pzlib_filefunc_def->zopendisk64_file = win32_opendisk64_file_func;
+    pzlib_filefunc_def->zread_file = win32_read_file_func;
+    pzlib_filefunc_def->zwrite_file = win32_write_file_func;
+    pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
+    pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
+    pzlib_filefunc_def->zclose_file = win32_close_file_func;
+    pzlib_filefunc_def->zerror_file = win32_error_file_func;
+    pzlib_filefunc_def->opaque = NULL;
+}
+
+void fill_win32_filefunc64A(zlib_filefunc64_def *pzlib_filefunc_def)
+{
+    pzlib_filefunc_def->zopen64_file = win32_open64_file_funcA;
+    pzlib_filefunc_def->zopendisk64_file = win32_opendisk64_file_funcA;
+    pzlib_filefunc_def->zread_file = win32_read_file_func;
+    pzlib_filefunc_def->zwrite_file = win32_write_file_func;
+    pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
+    pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
+    pzlib_filefunc_def->zclose_file = win32_close_file_func;
+    pzlib_filefunc_def->zerror_file = win32_error_file_func;
+    pzlib_filefunc_def->opaque = NULL;
+}
+
+void fill_win32_filefunc64W(zlib_filefunc64_def *pzlib_filefunc_def)
+{
+    pzlib_filefunc_def->zopen64_file = win32_open64_file_funcW;
+    pzlib_filefunc_def->zopendisk64_file = win32_opendisk64_file_funcW;
+    pzlib_filefunc_def->zread_file = win32_read_file_func;
+    pzlib_filefunc_def->zwrite_file = win32_write_file_func;
+    pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
+    pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
+    pzlib_filefunc_def->zclose_file = win32_close_file_func;
+    pzlib_filefunc_def->zerror_file = win32_error_file_func;
+    pzlib_filefunc_def->opaque = NULL;
+}
+
+#endif // _WIN32
diff --git a/src/libgame/zip/iowin32.h b/src/libgame/zip/iowin32.h
new file mode 100644 (file)
index 0000000..7ce4fc9
--- /dev/null
@@ -0,0 +1,35 @@
+/* iowin32.h -- IO base function header for compress/uncompress .zip
+   Version 1.2.0, September 16th, 2017
+   part of the MiniZip project
+
+   Copyright (C) 2012-2017 Nathan Moinvaziri
+     https://github.com/nmoinvaz/minizip
+   Copyright (C) 2009-2010 Mathias Svensson
+     Modifications for Zip64 support
+     http://result42.com
+   Copyright (C) 1998-2010 Gilles Vollant
+     http://www.winimage.com/zLibDll/minizip.html
+
+   This program is distributed under the terms of the same license as zlib.
+   See the accompanying LICENSE file for the full text of the license.
+*/
+
+#ifndef _IOWIN32_H
+#define _IOWIN32_H
+
+#include <windows.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void fill_win32_filefunc(zlib_filefunc_def *pzlib_filefunc_def);
+void fill_win32_filefunc64(zlib_filefunc64_def *pzlib_filefunc_def);
+void fill_win32_filefunc64A(zlib_filefunc64_def *pzlib_filefunc_def);
+void fill_win32_filefunc64W(zlib_filefunc64_def *pzlib_filefunc_def);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/libgame/zip/miniunz.c b/src/libgame/zip/miniunz.c
new file mode 100644 (file)
index 0000000..478d4a8
--- /dev/null
@@ -0,0 +1,666 @@
+/* miniunz.c
+   Version 1.2.0, September 16th, 2017
+   sample part of the MiniZip project
+
+   Copyright (C) 2012-2017 Nathan Moinvaziri
+     https://github.com/nmoinvaz/minizip
+   Copyright (C) 2009-2010 Mathias Svensson
+     Modifications for Zip64 support
+     http://result42.com
+   Copyright (C) 2007-2008 Even Rouault
+     Modifications of Unzip for Zip64
+   Copyright (C) 1998-2010 Gilles Vollant
+     http://www.winimage.com/zLibDll/minizip.html
+
+   This program is distributed under the terms of the same license as zlib.
+   See the accompanying LICENSE file for the full text of the license.
+*/
+
+#if defined(__linux__)
+// Linux needs this to support file operation on files larger then 4+GB
+#  ifndef __USE_FILE_OFFSET64
+#  define __USE_FILE_OFFSET64
+#  endif
+#  ifndef __USE_LARGEFILE64
+#  define __USE_LARGEFILE64
+#  endif
+#  ifndef _LARGEFILE64_SOURCE
+#  define _LARGEFILE64_SOURCE
+#  endif
+#  ifndef _FILE_OFFSET_BIT
+#  define _FILE_OFFSET_BIT 64
+#  endif
+#endif
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "zlib.h"
+#include "ioapi.h"
+
+#ifdef _WIN32
+#  include <direct.h>
+#  include <io.h>
+#else
+#  include <utime.h>
+#endif
+
+#include "unzip.h"
+
+#ifdef _WIN32
+#  define USEWIN32IOAPI
+#  include "iowin32.h"
+#endif
+
+#include "miniunz.h"
+
+#ifdef _WIN32
+#  define MKDIR(d) _mkdir(d)
+#  define CHDIR(d) _chdir(d)
+#else
+#  define MKDIR(d) mkdir(d, 0775)
+#  define CHDIR(d) chdir(d)
+#endif
+
+
+#define DEBUG_PRINTF                   0
+#define debug_printf(...)              \
+    do { if (DEBUG_PRINTF) fprintf(stderr, __VA_ARGS__); } while (0)
+
+
+static char **zip_entries = NULL;
+static int num_zip_entries = 0;
+static int max_zip_entries = 0;
+static const int max_alloc_zip_entries = 256;
+
+static void add_zip_entry(const char *s)
+{
+    if (zip_entries == NULL)
+    {
+        max_zip_entries = max_alloc_zip_entries;
+
+       zip_entries = malloc(max_zip_entries * sizeof(char *));
+
+       if (zip_entries == NULL)
+           exit(1);
+
+       num_zip_entries = 0;
+    }
+
+    if (num_zip_entries >= max_zip_entries - 1)
+    {
+        max_zip_entries += max_alloc_zip_entries;
+
+       zip_entries = realloc(zip_entries, max_zip_entries * sizeof(char *));
+
+       if (zip_entries == NULL)
+           exit(1);
+    }
+
+    zip_entries[num_zip_entries++] = strdup(s);
+    zip_entries[num_zip_entries] = NULL;       // ensure NULL terminated list
+}
+
+static void free_zip_entries(void)
+{
+    if (zip_entries == NULL)
+        return;
+
+    int i;
+
+    for (i = 0; i < num_zip_entries; i++)
+        free(zip_entries[i]);
+
+    num_zip_entries = 0;
+    max_zip_entries = 0;
+
+    free(zip_entries);
+
+    zip_entries = NULL;
+}
+
+static int invalid_date(const struct tm *ptm)
+{
+#define datevalue_in_range(min, max, value) ((min) <= (value) && (value) <= (max))
+    return (!datevalue_in_range(0, 207, ptm->tm_year) ||
+            !datevalue_in_range(0, 11, ptm->tm_mon) ||
+            !datevalue_in_range(1, 31, ptm->tm_mday) ||
+            !datevalue_in_range(0, 23, ptm->tm_hour) ||
+            !datevalue_in_range(0, 59, ptm->tm_min) ||
+            !datevalue_in_range(0, 59, ptm->tm_sec));
+#undef datevalue_in_range
+}
+
+// Conversion without validation
+static void dosdate_to_raw_tm(uint64_t dos_date, struct tm *ptm)
+{
+    uint64_t date = (uint64_t)(dos_date >> 16);
+
+    ptm->tm_mday = (uint16_t)(date & 0x1f);
+    ptm->tm_mon = (uint16_t)(((date & 0x1E0) / 0x20) - 1);
+    ptm->tm_year = (uint16_t)(((date & 0x0FE00) / 0x0200) + 80);
+    ptm->tm_hour = (uint16_t)((dos_date & 0xF800) / 0x800);
+    ptm->tm_min = (uint16_t)((dos_date & 0x7E0) / 0x20);
+    ptm->tm_sec = (uint16_t)(2 * (dos_date & 0x1f));
+    ptm->tm_isdst = -1;
+}
+
+static int dosdate_to_tm(uint64_t dos_date, struct tm *ptm)
+{
+    dosdate_to_raw_tm(dos_date, ptm);
+
+    if (invalid_date(ptm))
+    {
+        // Invalid date stored, so don't return it.
+        memset(ptm, 0, sizeof(struct tm));
+        return -1;
+    }
+    return 0;
+}
+
+#ifndef _WIN32
+static time_t dosdate_to_time_t(uint64_t dos_date)
+{
+    struct tm ptm;
+    dosdate_to_raw_tm(dos_date, &ptm);
+    return mktime(&ptm);
+}
+#endif
+
+static void change_file_date(const char *path, uint32_t dos_date)
+{
+#ifdef _WIN32
+    HANDLE handle = NULL;
+    FILETIME ftm, ftm_local, ftm_create, ftm_access, ftm_modified;
+
+    handle = CreateFileA(path, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
+    if (handle != INVALID_HANDLE_VALUE)
+    {
+        GetFileTime(handle, &ftm_create, &ftm_access, &ftm_modified);
+        DosDateTimeToFileTime((WORD)(dos_date >> 16), (WORD)dos_date, &ftm_local);
+        LocalFileTimeToFileTime(&ftm_local, &ftm);
+        SetFileTime(handle, &ftm, &ftm_access, &ftm);
+        CloseHandle(handle);
+    }
+#else
+    struct utimbuf ut;
+    ut.actime = ut.modtime = dosdate_to_time_t(dos_date);
+    utime(path, &ut);
+#endif
+}
+
+static int makedir(const char *newdir)
+{
+    char *buffer = NULL;
+    char *p = NULL;
+    int len = (int)strlen(newdir);
+
+    if (len <= 0)
+        return 0;
+
+    buffer = (char*)malloc(len + 1);
+    if (buffer == NULL)
+    {
+        debug_printf("Error allocating memory\n");
+        return -1;
+    }
+
+    strcpy(buffer, newdir);
+
+    if (buffer[len - 1] == '/')
+        buffer[len - 1] = 0;
+
+    if (MKDIR(buffer) == 0)
+    {
+        free(buffer);
+        return 1;
+    }
+
+    p = buffer + 1;
+    while (1)
+    {
+        char hold;
+        while (*p && *p != '\\' && *p != '/')
+            p++;
+        hold = *p;
+        *p = 0;
+
+        if ((MKDIR(buffer) == -1) && (errno == ENOENT))
+        {
+            debug_printf("couldn't create directory %s (%d)\n", buffer, errno);
+            free(buffer);
+            return 0;
+        }
+
+        if (hold == 0)
+            break;
+
+        *p++ = hold;
+    }
+
+    free(buffer);
+    return 1;
+}
+
+static FILE *get_file_handle(const char *path)
+{
+    FILE *handle = NULL;
+#if defined(WIN32)
+    wchar_t *pathWide = NULL;
+    int pathLength = 0;
+
+    pathLength = MultiByteToWideChar(CP_UTF8, 0, path, -1, NULL, 0) + 1;
+    pathWide = (wchar_t*)calloc(pathLength, sizeof(wchar_t));
+    MultiByteToWideChar(CP_UTF8, 0, path, -1, pathWide, pathLength);
+    handle = _wfopen((const wchar_t*)pathWide, L"rb");
+    free(pathWide);
+#else
+    handle = fopen64(path, "rb");
+#endif
+
+    return handle;
+}
+
+static int check_file_exists(const char *path)
+{
+    FILE *handle = get_file_handle(path);
+    if (handle == NULL)
+        return 0;
+    fclose(handle);
+    return 1;
+}
+
+static void display_zpos64(uint64_t n, int size_char)
+{
+    /* To avoid compatibility problem we do here the conversion */
+    char number[21] = { 0 };
+    int offset = 19;
+    int pos_string = 19;
+    int size_display_string = 19;
+
+    while (1)
+    {
+        number[offset] = (char)((n % 10) + '0');
+        if (number[offset] != '0')
+            pos_string = offset;
+        n /= 10;
+        if (offset == 0)
+            break;
+        offset--;
+    }
+
+    size_display_string -= pos_string;
+    while (size_char-- > size_display_string)
+        debug_printf(" ");
+    debug_printf("%s", &number[pos_string]);
+}
+
+static int miniunz_list(unzFile uf)
+{
+    free_zip_entries();
+
+    int err = unzGoToFirstFile(uf);
+    if (err != UNZ_OK)
+    {
+        debug_printf("error %d with zipfile in unzGoToFirstFile\n", err);
+        return 1;
+    }
+
+    debug_printf("  Length  Method     Size Ratio   Date    Time   CRC-32     Name\n");
+    debug_printf("  ------  ------     ---- -----   ----    ----   ------     ----\n");
+
+    do
+    {
+        char filename_inzip[256] = {0};
+        unz_file_info64 file_info = {0};
+        uint32_t ratio = 0;
+        struct tm tmu_date = { 0 };
+        const char *string_method = NULL;
+        char char_crypt = ' ';
+
+        err = unzGetCurrentFileInfo64(uf, &file_info, filename_inzip, sizeof(filename_inzip), NULL, 0, NULL, 0);
+        if (err != UNZ_OK)
+        {
+            debug_printf("error %d with zipfile in unzGetCurrentFileInfo\n", err);
+            break;
+        }
+
+       add_zip_entry(filename_inzip);
+
+        if (file_info.uncompressed_size > 0)
+            ratio = (uint32_t)((file_info.compressed_size * 100) / file_info.uncompressed_size);
+
+        /* Display a '*' if the file is encrypted */
+        if ((file_info.flag & 1) != 0)
+            char_crypt = '*';
+
+        if (file_info.compression_method == 0)
+            string_method = "Stored";
+        else if (file_info.compression_method == Z_DEFLATED)
+        {
+            uint16_t level = (uint16_t)((file_info.flag & 0x6) / 2);
+            if (level == 0)
+                string_method = "Defl:N";
+            else if (level == 1)
+                string_method = "Defl:X";
+            else if ((level == 2) || (level == 3))
+                string_method = "Defl:F"; /* 2:fast , 3 : extra fast*/
+            else
+                string_method = "Unkn. ";
+        }
+        else if (file_info.compression_method == Z_BZIP2ED)
+        {
+            string_method = "BZip2 ";
+        }
+        else
+            string_method = "Unkn. ";
+
+        display_zpos64(file_info.uncompressed_size, 7);
+        debug_printf("  %6s%c", string_method, char_crypt);
+        display_zpos64(file_info.compressed_size, 7);
+
+        dosdate_to_tm(file_info.dos_date, &tmu_date);
+        debug_printf(" %3u%%  %2.2u-%2.2u-%2.2u  %2.2u:%2.2u  %8.8x   %s\n", ratio,
+            (uint32_t)tmu_date.tm_mon + 1, (uint32_t)tmu_date.tm_mday,
+            (uint32_t)tmu_date.tm_year % 100,
+            (uint32_t)tmu_date.tm_hour, (uint32_t)tmu_date.tm_min,
+            file_info.crc, filename_inzip);
+
+        err = unzGoToNextFile(uf);
+    }
+    while (err == UNZ_OK);
+
+    if (err != UNZ_END_OF_LIST_OF_FILE && err != UNZ_OK)
+    {
+        debug_printf("error %d with zipfile in unzGoToNextFile\n", err);
+        return err;
+    }
+
+    return 0;
+}
+
+static int miniunz_extract_currentfile(unzFile uf, int opt_extract_without_path, int *popt_overwrite, const char *password)
+{
+    unz_file_info64 file_info = {0};
+    FILE* fout = NULL;
+    void* buf = NULL;
+    uint16_t size_buf = 8192;
+    int err = UNZ_OK;
+    int errclose = UNZ_OK;
+    int skip = 0;
+    char filename_inzip[256] = {0};
+    char *filename_withoutpath = NULL;
+    const char *write_filename = NULL;
+    char *p = NULL;
+
+    err = unzGetCurrentFileInfo64(uf, &file_info, filename_inzip, sizeof(filename_inzip), NULL, 0, NULL, 0);
+    if (err != UNZ_OK)
+    {
+        debug_printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
+        return err;
+    }
+
+    add_zip_entry(filename_inzip);
+
+    p = filename_withoutpath = filename_inzip;
+    while (*p != 0)
+    {
+        if ((*p == '/') || (*p == '\\'))
+            filename_withoutpath = p+1;
+        p++;
+    }
+
+    /* If zip entry is a directory then create it on disk */
+    if (*filename_withoutpath == 0)
+    {
+        if (opt_extract_without_path == 0)
+        {
+            debug_printf("creating directory: %s\n", filename_inzip);
+            MKDIR(filename_inzip);
+        }
+        return err;
+    }
+
+    buf = (void*)malloc(size_buf);
+    if (buf == NULL)
+    {
+        debug_printf("Error allocating memory\n");
+        return UNZ_INTERNALERROR;
+    }
+
+    err = unzOpenCurrentFilePassword(uf, password);
+    if (err != UNZ_OK)
+        debug_printf("error %d with zipfile in unzOpenCurrentFilePassword\n", err);
+
+    if (opt_extract_without_path)
+        write_filename = filename_withoutpath;
+    else
+        write_filename = filename_inzip;
+
+    /* Determine if the file should be overwritten or not and ask the user if needed */
+    if ((err == UNZ_OK) && (*popt_overwrite == 0) && (check_file_exists(write_filename)))
+    {
+        char rep = 0;
+        do
+        {
+            char answer[128];
+            debug_printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ", write_filename);
+            if (scanf("%1s", answer) != 1)
+                exit(EXIT_FAILURE);
+            rep = answer[0];
+            if ((rep >= 'a') && (rep <= 'z'))
+                rep -= 0x20;
+        }
+        while ((rep != 'Y') && (rep != 'N') && (rep != 'A'));
+
+        if (rep == 'N')
+            skip = 1;
+        if (rep == 'A')
+            *popt_overwrite = 1;
+    }
+
+    /* Create the file on disk so we can unzip to it */
+    if ((skip == 0) && (err == UNZ_OK))
+    {
+        fout = fopen64(write_filename, "wb");
+        /* Some zips don't contain directory alone before file */
+        if ((fout == NULL) && (opt_extract_without_path == 0) &&
+            (filename_withoutpath != (char*)filename_inzip))
+        {
+            char c = *(filename_withoutpath-1);
+            *(filename_withoutpath-1) = 0;
+            makedir(write_filename);
+            *(filename_withoutpath-1) = c;
+            fout = fopen64(write_filename, "wb");
+        }
+        if (fout == NULL)
+            debug_printf("error opening %s\n", write_filename);
+    }
+
+    /* Read from the zip, unzip to buffer, and write to disk */
+    if (fout != NULL)
+    {
+        debug_printf(" extracting: %s\n", write_filename);
+
+        do
+        {
+            err = unzReadCurrentFile(uf, buf, size_buf);
+            if (err < 0)
+            {
+                debug_printf("error %d with zipfile in unzReadCurrentFile\n", err);
+                break;
+            }
+            if (err == 0)
+                break;
+            if (fwrite(buf, err, 1, fout) != 1)
+            {
+                debug_printf("error %d in writing extracted file\n", errno);
+                err = UNZ_ERRNO;
+                break;
+            }
+        }
+        while (err > 0);
+
+        if (fout)
+            fclose(fout);
+
+        /* Set the time of the file that has been unzipped */
+        if (err == 0)
+            change_file_date(write_filename, file_info.dos_date);
+    }
+
+    errclose = unzCloseCurrentFile(uf);
+    if (errclose != UNZ_OK)
+        debug_printf("error %d with zipfile in unzCloseCurrentFile\n", errclose);
+
+    free(buf);
+    return err;
+}
+
+static int miniunz_extract_all(unzFile uf, int opt_extract_without_path, int opt_overwrite, const char *password)
+{
+    free_zip_entries();
+
+    int err = unzGoToFirstFile(uf);
+    if (err != UNZ_OK)
+    {
+        debug_printf("error %d with zipfile in unzGoToFirstFile\n", err);
+        return 1;
+    }
+
+    do
+    {
+        err = miniunz_extract_currentfile(uf, opt_extract_without_path, &opt_overwrite, password);
+        if (err != UNZ_OK)
+            break;
+        err = unzGoToNextFile(uf);
+    }
+    while (err == UNZ_OK);
+
+    if (err != UNZ_END_OF_LIST_OF_FILE)
+    {
+        debug_printf("error %d with zipfile in unzGoToNextFile\n", err);
+        return 1;
+    }
+    return 0;
+}
+
+char **zip_list(char *filename)
+{
+    if (filename == NULL)
+    {
+        debug_printf("No filename specified!\n");
+
+       return NULL;
+    }
+
+#ifdef USEWIN32IOAPI
+    zlib_filefunc64_def ffunc;
+    fill_win32_filefunc64A(&ffunc);
+    unzFile uf = unzOpen2_64(filename, &ffunc);
+#else
+    unzFile uf = unzOpen64(filename);
+#endif
+
+    if (uf == NULL)
+    {
+        debug_printf("Cannot open file '%s'!\n", filename);
+
+       return NULL;
+    }
+
+    debug_printf("File '%s' opened.\n", filename);
+
+    int success = (miniunz_list(uf) == UNZ_OK);
+
+    unzClose(uf);
+
+    if (!success)
+        return NULL;
+
+    return zip_entries;
+}
+
+char **zip_extract(char *filename, char *directory)
+{
+    if (filename == NULL)
+    {
+        debug_printf("No zip filename specified!\n");
+
+       return NULL;
+    }
+
+    if (directory == NULL)
+    {
+        debug_printf("No target directory specified!\n");
+
+       return NULL;
+    }
+
+    struct stat file_status;
+
+    if (stat(directory, &file_status) != 0 || !S_ISDIR(file_status.st_mode))
+    {
+        debug_printf("Directory '%s' does not exist!\n", directory);
+
+       return NULL;
+    }
+
+#ifdef USEWIN32IOAPI
+    zlib_filefunc64_def ffunc;
+    fill_win32_filefunc64A(&ffunc);
+    unzFile uf = unzOpen2_64(filename, &ffunc);
+#else
+    unzFile uf = unzOpen64(filename);
+#endif
+
+    if (uf == NULL)
+    {
+        debug_printf("Cannot open file '%s'!\n", filename);
+
+       return NULL;
+    }
+
+    debug_printf("File '%s' opened.\n", filename);
+
+    int max_directory_size = 1024;
+    char last_directory[max_directory_size];
+
+    if (getcwd(last_directory, max_directory_size) == NULL)
+    {
+        debug_printf("Cannot get current directory!\n");
+
+       unzClose(uf);
+
+       return NULL;
+    }
+
+    if (CHDIR(directory))      // change to target directory
+    {
+      debug_printf("Cannot change to directory '%s'!\n", directory);
+
+      unzClose(uf);
+
+      return NULL;
+    }
+
+    int success = (miniunz_extract_all(uf, 0, 1, NULL) == UNZ_OK);
+
+    CHDIR(last_directory);     // change back to previous directory
+
+    unzClose(uf);
+
+    if (!success)
+        return NULL;
+
+    return zip_entries;
+}
diff --git a/src/libgame/zip/miniunz.h b/src/libgame/zip/miniunz.h
new file mode 100644 (file)
index 0000000..a61fbfb
--- /dev/null
@@ -0,0 +1,11 @@
+// ============================================================================
+// miniunz.h
+// ============================================================================
+
+#ifndef MINIUNZ_H
+#define MINIUNZ_H
+
+char **zip_list(char *);
+char **zip_extract(char *, char *);
+
+#endif // MINIUNZ_H
diff --git a/src/libgame/zip/unzip.c b/src/libgame/zip/unzip.c
new file mode 100644 (file)
index 0000000..5f1cb15
--- /dev/null
@@ -0,0 +1,2009 @@
+/* unzip.c -- IO for uncompress .zip files using zlib
+   Version 1.2.0, September 16th, 2017
+   part of the MiniZip project
+
+   Copyright (C) 2010-2017 Nathan Moinvaziri
+     Modifications for AES, PKWARE disk spanning
+     https://github.com/nmoinvaz/minizip
+   Copyright (C) 2009-2010 Mathias Svensson
+     Modifications for Zip64 support on both zip and unzip
+     http://result42.com
+   Copyright (C) 2007-2008 Even Rouault
+     Modifications of Unzip for Zip64
+   Copyright (C) 1998-2010 Gilles Vollant
+     http://www.winimage.com/zLibDll/minizip.html
+
+   This program is distributed under the terms of the same license as zlib.
+   See the accompanying LICENSE file for the full text of the license.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+#include <limits.h>
+
+#define NOUNCRYPT
+
+#include "zlib.h"
+#include "unzip.h"
+
+#ifdef HAVE_AES
+#  define AES_METHOD          (99)
+#  define AES_PWVERIFYSIZE    (2)
+#  define AES_MAXSALTLENGTH   (16)
+#  define AES_AUTHCODESIZE    (10)
+#  define AES_HEADERSIZE      (11)
+#  define AES_KEYSIZE(mode)   (64 + (mode * 64))
+
+#  include "aes/aes.h"
+#  include "aes/fileenc.h"
+#endif
+#ifdef HAVE_APPLE_COMPRESSION
+#  include <compression.h>
+#endif
+
+#ifndef NOUNCRYPT
+#  include "crypt.h"
+#endif
+
+#define DISKHEADERMAGIC             (0x08074b50)
+#define LOCALHEADERMAGIC            (0x04034b50)
+#define CENTRALHEADERMAGIC          (0x02014b50)
+#define ENDHEADERMAGIC              (0x06054b50)
+#define ZIP64ENDHEADERMAGIC         (0x06064b50)
+#define ZIP64ENDLOCHEADERMAGIC      (0x07064b50)
+
+#define SIZECENTRALDIRITEM          (0x2e)
+#define SIZECENTRALHEADERLOCATOR    (0x14)
+#define SIZEZIPLOCALHEADER          (0x1e)
+
+#ifndef BUFREADCOMMENT
+#  define BUFREADCOMMENT            (0x400)
+#endif
+
+#ifndef UNZ_BUFSIZE
+#  define UNZ_BUFSIZE               (UINT16_MAX)
+#endif
+#ifndef UNZ_MAXFILENAMEINZIP
+#  define UNZ_MAXFILENAMEINZIP      (256)
+#endif
+
+#ifndef ALLOC
+#  define ALLOC(size) (malloc(size))
+#endif
+#ifndef TRYFREE
+#  define TRYFREE(p) {if (p) free(p);}
+#endif
+
+const char unz_copyright[] = " unzip 1.2.0 Copyright 1998-2017 - https://github.com/nmoinvaz/minizip";
+
+/* unz_file_info_internal contain internal info about a file in zipfile*/
+typedef struct unz_file_info64_internal_s
+{
+    uint64_t offset_curfile;            /* relative offset of local header 8 bytes */
+    uint64_t byte_before_the_zipfile;   /* byte before the zipfile, (>0 for sfx) */
+#ifdef HAVE_AES
+    uint8_t  aes_encryption_mode;
+    uint16_t aes_compression_method;
+    uint16_t aes_version;
+#endif
+} unz_file_info64_internal;
+
+/* file_in_zip_read_info_s contain internal information about a file in zipfile */
+typedef struct
+{
+    uint8_t *read_buffer;               /* internal buffer for compressed data */
+    z_stream stream;                    /* zLib stream structure for inflate */
+#ifdef HAVE_BZIP2
+    bz_stream bstream;                  /* bzLib stream structure for bziped */
+#endif
+#ifdef HAVE_APPLE_COMPRESSION
+    compression_stream astream;         /* libcompression stream structure */
+#endif
+#ifdef HAVE_AES
+    fcrypt_ctx aes_ctx;
+#endif
+    uint64_t pos_in_zipfile;            /* position in byte on the zipfile, for fseek */
+    uint8_t  stream_initialised;        /* flag set if stream structure is initialised */
+
+    uint64_t offset_local_extrafield;   /* offset of the local extra field */
+    uint16_t size_local_extrafield;     /* size of the local extra field */
+    uint64_t pos_local_extrafield;      /* position in the local extra field in read */
+    uint64_t total_out_64;
+
+    uint32_t crc32;                     /* crc32 of all data uncompressed */
+    uint32_t crc32_expected;            /* crc32 we must obtain after decompress all */
+    uint64_t rest_read_compressed;      /* number of byte to be decompressed */
+    uint64_t rest_read_uncompressed;    /* number of byte to be obtained after decomp */
+
+    zlib_filefunc64_32_def z_filefunc;
+
+    voidpf   filestream;                /* io structore of the zipfile */
+    uint16_t compression_method;        /* compression method (0==store) */
+    uint64_t byte_before_the_zipfile;   /* byte before the zipfile, (>0 for sfx) */
+    int      raw;
+} file_in_zip64_read_info_s;
+
+/* unz64_s contain internal information about the zipfile */
+typedef struct
+{
+    zlib_filefunc64_32_def z_filefunc;
+
+    voidpf filestream;                  /* io structure of the current zipfile */
+    voidpf filestream_with_CD;          /* io structure of the disk with the central directory */
+
+    unz_global_info64 gi;               /* public global information */
+
+    uint64_t byte_before_the_zipfile;   /* byte before the zipfile, (>0 for sfx) */
+    uint64_t num_file;                  /* number of the current file in the zipfile */
+    uint64_t pos_in_central_dir;        /* pos of the current file in the central dir */
+    uint64_t current_file_ok;           /* flag about the usability of the current file */
+    uint64_t central_pos;               /* position of the beginning of the central dir */
+    uint32_t number_disk;               /* number of the current disk, used for spanning ZIP */
+    uint64_t size_central_dir;          /* size of the central directory */
+    uint64_t offset_central_dir;        /* offset of start of central directory with
+                                           respect to the starting disk number */
+
+    unz_file_info64 cur_file_info;      /* public info about the current file in zip*/
+    unz_file_info64_internal cur_file_info_internal;
+                                        /* private info about it*/
+    file_in_zip64_read_info_s *pfile_in_zip_read;
+                                        /* structure about the current file if we are decompressing it */
+    int is_zip64;                       /* is the current file zip64 */
+#ifndef NOUNCRYPT
+    uint32_t keys[3];                   /* keys defining the pseudo-random sequence */
+    const z_crc_t *pcrc_32_tab;
+#endif
+} unz64_internal;
+
+/* Read a byte from a gz_stream; Return EOF for end of file. */
+static int unzReadUInt8(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint8_t *value)
+{
+    uint8_t c = 0;
+    if (ZREAD64(*pzlib_filefunc_def, filestream, &c, 1) == 1)
+    {
+        *value = (uint8_t)c;
+        return UNZ_OK;
+    }
+    *value = 0;
+    if (ZERROR64(*pzlib_filefunc_def, filestream))
+        return UNZ_ERRNO;
+    return UNZ_EOF;
+}
+
+static int unzReadUInt16(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint16_t *value)
+{
+    uint16_t x;
+    uint8_t c = 0;
+    int err = UNZ_OK;
+
+    err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
+    x = (uint16_t)c;
+    if (err == UNZ_OK)
+        err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
+    x |= ((uint16_t)c) << 8;
+
+    if (err == UNZ_OK)
+        *value = x;
+    else
+        *value = 0;
+    return err;
+}
+
+static int unzReadUInt32(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint32_t *value)
+{
+    uint32_t x = 0;
+    uint8_t c = 0;
+    int err = UNZ_OK;
+
+    err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
+    x = (uint32_t)c;
+    if (err == UNZ_OK)
+        err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
+    x |= ((uint32_t)c) << 8;
+    if (err == UNZ_OK)
+        err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
+    x |= ((uint32_t)c) << 16;
+    if (err == UNZ_OK)
+        err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
+    x += ((uint32_t)c) << 24;
+
+    if (err == UNZ_OK)
+        *value = x;
+    else
+        *value = 0;
+    return err;
+}
+
+static int unzReadUInt64(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint64_t *value)
+{
+    uint64_t x = 0;
+    uint8_t i = 0;
+    int err = UNZ_OK;
+
+    err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+    x = (uint64_t)i;
+    if (err == UNZ_OK)
+        err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+    x |= ((uint64_t)i) << 8;
+    if (err == UNZ_OK)
+        err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+    x |= ((uint64_t)i) << 16;
+    if (err == UNZ_OK)
+        err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+    x |= ((uint64_t)i) << 24;
+    if (err == UNZ_OK)
+        err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+    x |= ((uint64_t)i) << 32;
+    if (err == UNZ_OK)
+        err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+    x |= ((uint64_t)i) << 40;
+    if (err == UNZ_OK)
+        err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+    x |= ((uint64_t)i) << 48;
+    if (err == UNZ_OK)
+        err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+    x |= ((uint64_t)i) << 56;
+
+    if (err == UNZ_OK)
+        *value = x;
+    else
+        *value = 0;
+    return err;
+}
+
+/* Locate the Central directory of a zip file (at the end, just before the global comment) */
+static int unzSearchCentralDir(const zlib_filefunc64_32_def *pzlib_filefunc_def, uint64_t *pos_found, voidpf filestream)
+{
+    uint8_t buf[BUFREADCOMMENT + 4];
+    uint64_t file_size = 0;
+    uint64_t back_read = 4;
+    uint64_t max_back = UINT16_MAX; /* maximum size of global comment */
+    uint32_t read_size = 0;
+    uint64_t read_pos = 0;
+    uint32_t i = 0;
+    *pos_found = 0;
+
+    if (ZSEEK64(*pzlib_filefunc_def, filestream, 0, ZLIB_FILEFUNC_SEEK_END) != 0)
+        return UNZ_ERRNO;
+
+    file_size = ZTELL64(*pzlib_filefunc_def, filestream);
+
+    if (max_back > file_size)
+        max_back = file_size;
+
+    while (back_read < max_back)
+    {
+        if (back_read + BUFREADCOMMENT > max_back)
+            back_read = max_back;
+        else
+            back_read += BUFREADCOMMENT;
+
+        read_pos = file_size - back_read;
+        read_size = ((BUFREADCOMMENT + 4) < (file_size - read_pos)) ?
+                     (BUFREADCOMMENT + 4) : (uint32_t)(file_size - read_pos);
+
+        if (ZSEEK64(*pzlib_filefunc_def, filestream, read_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
+            break;
+        if (ZREAD64(*pzlib_filefunc_def, filestream, buf, read_size) != read_size)
+            break;
+
+        for (i = read_size - 3; (i--) > 0;)
+            if (((*(buf+i)) == (ENDHEADERMAGIC & 0xff)) &&
+                ((*(buf+i+1)) == (ENDHEADERMAGIC >> 8 & 0xff)) &&
+                ((*(buf+i+2)) == (ENDHEADERMAGIC >> 16 & 0xff)) &&
+                ((*(buf+i+3)) == (ENDHEADERMAGIC >> 24 & 0xff)))
+            {
+                *pos_found = read_pos+i;
+                return UNZ_OK;
+            }
+    }
+
+    return UNZ_ERRNO;
+}
+
+/* Locate the Central directory 64 of a zipfile (at the end, just before the global comment) */
+static int unzSearchCentralDir64(const zlib_filefunc64_32_def *pzlib_filefunc_def, uint64_t *offset, voidpf filestream,
+    const uint64_t endcentraloffset)
+{
+    uint32_t value32 = 0;
+    *offset = 0;
+
+    /* Zip64 end of central directory locator */
+    if (ZSEEK64(*pzlib_filefunc_def, filestream, endcentraloffset - SIZECENTRALHEADERLOCATOR, ZLIB_FILEFUNC_SEEK_SET) != 0)
+        return UNZ_ERRNO;
+
+    /* Read locator signature */
+    if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
+        return UNZ_ERRNO;
+    if (value32 != ZIP64ENDLOCHEADERMAGIC)
+        return UNZ_ERRNO;
+    /* Number of the disk with the start of the zip64 end of  central directory */
+    if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
+        return UNZ_ERRNO;
+    /* Relative offset of the zip64 end of central directory record */
+    if (unzReadUInt64(pzlib_filefunc_def, filestream, offset) != UNZ_OK)
+        return UNZ_ERRNO;
+    /* Total number of disks */
+    if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
+        return UNZ_ERRNO;
+    /* Goto end of central directory record */
+    if (ZSEEK64(*pzlib_filefunc_def, filestream, *offset, ZLIB_FILEFUNC_SEEK_SET) != 0)
+        return UNZ_ERRNO;
+     /* The signature */
+    if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
+        return UNZ_ERRNO;
+    if (value32 != ZIP64ENDHEADERMAGIC)
+        return UNZ_ERRNO;
+
+    return UNZ_OK;
+}
+
+static unzFile unzOpenInternal(const void *path, zlib_filefunc64_32_def *pzlib_filefunc64_32_def)
+{
+    unz64_internal us = {{{ 0 }}};     // (prevent warning from GCC bug 53119)
+    unz64_internal *s = NULL;
+    uint64_t central_pos = 0;
+    uint64_t central_pos64 = 0;
+    uint64_t number_entry_CD = 0;
+    uint16_t value16 = 0;
+    uint32_t value32 = 0;
+    uint64_t value64 = 0;
+    voidpf filestream = NULL;
+    int err = UNZ_OK;
+    int err64 = UNZ_OK;
+
+    if (pzlib_filefunc64_32_def == NULL)
+        fill_fopen64_filefunc(&us.z_filefunc.zfile_func64);
+    else
+    {
+        assert((pzlib_filefunc64_32_def->zopen32_file || pzlib_filefunc64_32_def->zfile_func64.zopen64_file) &&
+               (pzlib_filefunc64_32_def->zopendisk32_file || pzlib_filefunc64_32_def->zfile_func64.zopendisk64_file) &&
+               (pzlib_filefunc64_32_def->ztell32_file || pzlib_filefunc64_32_def->zfile_func64.ztell64_file) &&
+               (pzlib_filefunc64_32_def->zseek32_file || pzlib_filefunc64_32_def->zfile_func64.zseek64_file));
+        us.z_filefunc = *pzlib_filefunc64_32_def;
+    }
+
+    us.filestream = ZOPEN64(us.z_filefunc, path, ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_EXISTING);
+
+    if (us.filestream == NULL)
+        return NULL;
+
+    us.filestream_with_CD = us.filestream;
+
+    /* Search for end of central directory header */
+    err = unzSearchCentralDir(&us.z_filefunc, &central_pos, us.filestream);
+    if (err == UNZ_OK)
+    {
+        if (ZSEEK64(us.z_filefunc, us.filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
+            err = UNZ_ERRNO;
+
+        /* The signature, already checked */
+        if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
+            err = UNZ_ERRNO;
+        /* Number of this disk */
+        if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
+            err = UNZ_ERRNO;
+        us.number_disk = value16;
+        /* Number of the disk with the start of the central directory */
+        if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
+            err = UNZ_ERRNO;
+        us.gi.number_disk_with_CD = value16;
+        /* Total number of entries in the central directory on this disk */
+        if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
+            err = UNZ_ERRNO;
+        us.gi.number_entry = value16;
+        /* Total number of entries in the central directory */
+        if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
+            err = UNZ_ERRNO;
+        number_entry_CD = value16;
+        if (number_entry_CD != us.gi.number_entry)
+            err = UNZ_BADZIPFILE;
+        /* Size of the central directory */
+        if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
+            err = UNZ_ERRNO;
+        us.size_central_dir = value32;
+        /* Offset of start of central directory with respect to the starting disk number */
+        if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
+            err = UNZ_ERRNO;
+        us.offset_central_dir = value32;
+        /* Zipfile comment length */
+        if (unzReadUInt16(&us.z_filefunc, us.filestream, &us.gi.size_comment) != UNZ_OK)
+            err = UNZ_ERRNO;
+
+        if (err == UNZ_OK)
+        {
+            /* Search for Zip64 end of central directory header */
+            err64 = unzSearchCentralDir64(&us.z_filefunc, &central_pos64, us.filestream, central_pos);
+            if (err64 == UNZ_OK)
+            {
+                central_pos = central_pos64;
+                us.is_zip64 = 1;
+
+                if (ZSEEK64(us.z_filefunc, us.filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
+                    err = UNZ_ERRNO;
+
+                /* the signature, already checked */
+                if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                /* size of zip64 end of central directory record */
+                if (unzReadUInt64(&us.z_filefunc, us.filestream, &value64) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                /* version made by */
+                if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                /* version needed to extract */
+                if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                /* number of this disk */
+                if (unzReadUInt32(&us.z_filefunc, us.filestream, &us.number_disk) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                /* number of the disk with the start of the central directory */
+                if (unzReadUInt32(&us.z_filefunc, us.filestream, &us.gi.number_disk_with_CD) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                /* total number of entries in the central directory on this disk */
+                if (unzReadUInt64(&us.z_filefunc, us.filestream, &us.gi.number_entry) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                /* total number of entries in the central directory */
+                if (unzReadUInt64(&us.z_filefunc, us.filestream, &number_entry_CD) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                if (number_entry_CD != us.gi.number_entry)
+                    err = UNZ_BADZIPFILE;
+                /* size of the central directory */
+                if (unzReadUInt64(&us.z_filefunc, us.filestream, &us.size_central_dir) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                /* offset of start of central directory with respect to the starting disk number */
+                if (unzReadUInt64(&us.z_filefunc, us.filestream, &us.offset_central_dir) != UNZ_OK)
+                    err = UNZ_ERRNO;
+            }
+            else if ((us.size_central_dir == UINT16_MAX) || (us.offset_central_dir == UINT32_MAX))
+                err = UNZ_BADZIPFILE;
+        }
+    }
+    else
+        err = UNZ_ERRNO;
+
+    if ((err == UNZ_OK) && (central_pos < us.offset_central_dir + us.size_central_dir))
+        err = UNZ_BADZIPFILE;
+
+    if (err != UNZ_OK)
+    {
+        ZCLOSE64(us.z_filefunc, us.filestream);
+        return NULL;
+    }
+
+    if (us.gi.number_disk_with_CD == 0)
+    {
+        /* If there is only one disk open another stream so we don't have to seek between the CD
+           and the file headers constantly */
+        filestream = ZOPEN64(us.z_filefunc, path, ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_EXISTING);
+        if (filestream != NULL)
+            us.filestream = filestream;
+    }
+
+    /* Hack for zip files that have no respect for zip64
+    if ((central_pos > 0xffffffff) && (us.offset_central_dir < 0xffffffff))
+        us.offset_central_dir = central_pos - us.size_central_dir;*/
+
+    us.byte_before_the_zipfile = central_pos - (us.offset_central_dir + us.size_central_dir);
+    us.central_pos = central_pos;
+
+    s = (unz64_internal*)ALLOC(sizeof(unz64_internal));
+    if (s != NULL)
+    {
+        *s = us;
+        if (err64 != UNZ_OK)
+            // workaround incorrect count #184
+            s->gi.number_entry = unzCountEntries(s);
+
+        unzGoToFirstFile((unzFile)s);
+    }
+    return (unzFile)s;
+}
+
+extern unzFile ZEXPORT unzOpen2(const char *path, zlib_filefunc_def *pzlib_filefunc32_def)
+{
+    if (pzlib_filefunc32_def != NULL)
+    {
+        zlib_filefunc64_32_def zlib_filefunc64_32_def_fill = {{ 0 }};
+        fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill, pzlib_filefunc32_def);
+        return unzOpenInternal(path, &zlib_filefunc64_32_def_fill);
+    }
+    return unzOpenInternal(path, NULL);
+}
+
+extern unzFile ZEXPORT unzOpen2_64(const void *path, zlib_filefunc64_def *pzlib_filefunc_def)
+{
+    if (pzlib_filefunc_def != NULL)
+    {
+        zlib_filefunc64_32_def zlib_filefunc64_32_def_fill = {{ 0 }};
+        zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def;
+        return unzOpenInternal(path, &zlib_filefunc64_32_def_fill);
+    }
+    return unzOpenInternal(path, NULL);
+}
+
+extern unzFile ZEXPORT unzOpen(const char *path)
+{
+    return unzOpenInternal(path, NULL);
+}
+
+extern unzFile ZEXPORT unzOpen64(const void *path)
+{
+    return unzOpenInternal(path, NULL);
+}
+
+extern int ZEXPORT unzClose(unzFile file)
+{
+    unz64_internal *s;
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+
+    if (s->pfile_in_zip_read != NULL)
+        unzCloseCurrentFile(file);
+
+    if ((s->filestream != NULL) && (s->filestream != s->filestream_with_CD))
+        ZCLOSE64(s->z_filefunc, s->filestream);
+    if (s->filestream_with_CD != NULL)
+        ZCLOSE64(s->z_filefunc, s->filestream_with_CD);
+
+    s->filestream = NULL;
+    s->filestream_with_CD = NULL;
+    TRYFREE(s);
+    return UNZ_OK;
+}
+
+/* Goto to the next available disk for spanned archives */
+static int unzGoToNextDisk(unzFile file)
+{
+    unz64_internal *s;
+    uint32_t number_disk_next = 0;
+
+    s = (unz64_internal*)file;
+    if (s == NULL)
+        return UNZ_PARAMERROR;
+    number_disk_next = s->number_disk;
+
+    if ((s->pfile_in_zip_read != NULL) && (s->pfile_in_zip_read->rest_read_uncompressed > 0))
+        /* We are currently reading a file and we need the next sequential disk */
+        number_disk_next += 1;
+    else
+        /* Goto the disk for the current file */
+        number_disk_next = s->cur_file_info.disk_num_start;
+
+    if (number_disk_next != s->number_disk)
+    {
+        /* Switch disks */
+        if ((s->filestream != NULL) && (s->filestream != s->filestream_with_CD))
+            ZCLOSE64(s->z_filefunc, s->filestream);
+
+        if (number_disk_next == s->gi.number_disk_with_CD)
+        {
+            s->filestream = s->filestream_with_CD;
+        }
+        else
+        {
+            s->filestream = ZOPENDISK64(s->z_filefunc, s->filestream_with_CD, number_disk_next,
+                ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_EXISTING);
+        }
+
+        if (s->filestream == NULL)
+            return UNZ_ERRNO;
+
+        s->number_disk = number_disk_next;
+    }
+
+    return UNZ_OK;
+}
+
+extern int ZEXPORT unzGetGlobalInfo(unzFile file, unz_global_info* pglobal_info32)
+{
+    unz64_internal *s = NULL;
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+
+    pglobal_info32->number_entry = (uint32_t)s->gi.number_entry;
+    pglobal_info32->size_comment = s->gi.size_comment;
+    pglobal_info32->number_disk_with_CD = s->gi.number_disk_with_CD;
+    return UNZ_OK;
+}
+
+extern int ZEXPORT unzGetGlobalInfo64(unzFile file, unz_global_info64 *pglobal_info)
+{
+    unz64_internal *s = NULL;
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+    *pglobal_info = s->gi;
+    return UNZ_OK;
+}
+
+extern int ZEXPORT unzGetGlobalComment(unzFile file, char *comment, uint16_t comment_size)
+{
+    unz64_internal *s = NULL;
+    uint16_t bytes_to_read = comment_size;
+    if (file == NULL)
+        return (int)UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+
+    if (bytes_to_read > s->gi.size_comment)
+        bytes_to_read = s->gi.size_comment;
+
+    if (ZSEEK64(s->z_filefunc, s->filestream_with_CD, s->central_pos + 22, ZLIB_FILEFUNC_SEEK_SET) != 0)
+        return UNZ_ERRNO;
+
+    if (bytes_to_read > 0)
+    {
+        *comment = 0;
+        if (ZREAD64(s->z_filefunc, s->filestream_with_CD, comment, bytes_to_read) != bytes_to_read)
+            return UNZ_ERRNO;
+    }
+
+    if ((comment != NULL) && (comment_size > s->gi.size_comment))
+        *(comment + s->gi.size_comment) = 0;
+
+    return (int)bytes_to_read;
+}
+
+static int unzGetCurrentFileInfoField(unzFile file, uint32_t *seek, void *field, uint16_t field_size, uint16_t size_file_field, int null_terminated_field)
+{
+    unz64_internal *s = NULL;
+    uint32_t bytes_to_read = 0;
+    int err = UNZ_OK;
+
+    if (file == NULL)
+        return (int)UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+
+    /* Read field */
+    if (field != NULL)
+    {
+        if (size_file_field < field_size)
+        {
+            if (null_terminated_field)
+                *((char *)field+size_file_field) = 0;
+
+            bytes_to_read = size_file_field;
+        }
+        else
+            bytes_to_read = field_size;
+
+        if (*seek != 0)
+        {
+            if (ZSEEK64(s->z_filefunc, s->filestream_with_CD, *seek, ZLIB_FILEFUNC_SEEK_CUR) == 0)
+                *seek = 0;
+            else
+                err = UNZ_ERRNO;
+        }
+
+        if ((size_file_field > 0) && (field_size > 0))
+        {
+            if (ZREAD64(s->z_filefunc, s->filestream_with_CD, field, bytes_to_read) != bytes_to_read)
+                err = UNZ_ERRNO;
+        }
+        *seek += size_file_field - bytes_to_read;
+    }
+    else
+    {
+        *seek += size_file_field;
+    }
+
+    return err;
+}
+
+/* Get info about the current file in the zipfile, with internal only info */
+static int unzGetCurrentFileInfoInternal(unzFile file, unz_file_info64 *pfile_info,
+    unz_file_info64_internal *pfile_info_internal, char *filename, uint16_t filename_size, void *extrafield,
+    uint16_t extrafield_size, char *comment, uint16_t comment_size)
+{
+    unz64_internal *s = NULL;
+    unz_file_info64 file_info;
+    unz_file_info64_internal file_info_internal;
+    uint32_t magic = 0;
+    uint64_t current_pos = 0;
+    uint32_t seek = 0;
+    uint32_t extra_pos = 0;
+    uint16_t extra_header_id = 0;
+    uint16_t extra_data_size = 0;
+    uint16_t value16 = 0;
+    uint32_t value32 = 0;
+    uint64_t value64 = 0;
+    int err = UNZ_OK;
+
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+
+    if (ZSEEK64(s->z_filefunc, s->filestream_with_CD,
+            s->pos_in_central_dir + s->byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET) != 0)
+        err = UNZ_ERRNO;
+
+    /* Check the magic */
+    if (err == UNZ_OK)
+    {
+        if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &magic) != UNZ_OK)
+            err = UNZ_ERRNO;
+        else if (magic != CENTRALHEADERMAGIC)
+            err = UNZ_BADZIPFILE;
+    }
+
+    /* Read central directory header */
+    if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.version) != UNZ_OK)
+        err = UNZ_ERRNO;
+    if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.version_needed) != UNZ_OK)
+        err = UNZ_ERRNO;
+    if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.flag) != UNZ_OK)
+        err = UNZ_ERRNO;
+    if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.compression_method) != UNZ_OK)
+        err = UNZ_ERRNO;
+    if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &file_info.dos_date) != UNZ_OK)
+        err = UNZ_ERRNO;
+    if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &file_info.crc) != UNZ_OK)
+        err = UNZ_ERRNO;
+    if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &value32) != UNZ_OK)
+        err = UNZ_ERRNO;
+    file_info.compressed_size = value32;
+    if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &value32) != UNZ_OK)
+        err = UNZ_ERRNO;
+    file_info.uncompressed_size = value32;
+    if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.size_filename) != UNZ_OK)
+        err = UNZ_ERRNO;
+    if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.size_file_extra) != UNZ_OK)
+        err = UNZ_ERRNO;
+    if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.size_file_comment) != UNZ_OK)
+        err = UNZ_ERRNO;
+    if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &value16) != UNZ_OK)
+        err = UNZ_ERRNO;
+    file_info.disk_num_start = value16;
+    if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.internal_fa) != UNZ_OK)
+        err = UNZ_ERRNO;
+    if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &file_info.external_fa) != UNZ_OK)
+        err = UNZ_ERRNO;
+    /* Relative offset of local header */
+    if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &value32) != UNZ_OK)
+        err = UNZ_ERRNO;
+
+    file_info.size_file_extra_internal = 0;
+    file_info.disk_offset = value32;
+    file_info_internal.offset_curfile = value32;
+#ifdef HAVE_AES
+    file_info_internal.aes_compression_method = 0;
+    file_info_internal.aes_encryption_mode = 0;
+    file_info_internal.aes_version = 0;
+#endif
+
+    if (err == UNZ_OK)
+        err = unzGetCurrentFileInfoField(file, &seek, filename, filename_size, file_info.size_filename, 1);
+
+    /* Read extrafield */
+    if (err == UNZ_OK)
+        err = unzGetCurrentFileInfoField(file, &seek, extrafield, extrafield_size, file_info.size_file_extra, 0);
+
+    if ((err == UNZ_OK) && (file_info.size_file_extra != 0))
+    {
+        if (seek != 0)
+        {
+            if (ZSEEK64(s->z_filefunc, s->filestream_with_CD, seek, ZLIB_FILEFUNC_SEEK_CUR) == 0)
+                seek = 0;
+            else
+                err = UNZ_ERRNO;
+        }
+
+        /* We are going to parse the extra field so we need to move back */
+        current_pos = ZTELL64(s->z_filefunc, s->filestream_with_CD);
+        if (current_pos < file_info.size_file_extra)
+            err = UNZ_ERRNO;
+        current_pos -= file_info.size_file_extra;
+        if (ZSEEK64(s->z_filefunc, s->filestream_with_CD, current_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
+            err = UNZ_ERRNO;
+
+        while ((err != UNZ_ERRNO) && (extra_pos < file_info.size_file_extra))
+        {
+            if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &extra_header_id) != UNZ_OK)
+                err = UNZ_ERRNO;
+            if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &extra_data_size) != UNZ_OK)
+                err = UNZ_ERRNO;
+
+            /* ZIP64 extra fields */
+            if (extra_header_id == 0x0001)
+            {
+                /* Subtract size of ZIP64 field, since ZIP64 is handled internally */
+                file_info.size_file_extra_internal += 2 + 2 + extra_data_size;
+
+                if (file_info.uncompressed_size == UINT32_MAX)
+                {
+                    if (unzReadUInt64(&s->z_filefunc, s->filestream_with_CD, &file_info.uncompressed_size) != UNZ_OK)
+                        err = UNZ_ERRNO;
+                }
+                if (file_info.compressed_size == UINT32_MAX)
+                {
+                    if (unzReadUInt64(&s->z_filefunc, s->filestream_with_CD, &file_info.compressed_size) != UNZ_OK)
+                        err = UNZ_ERRNO;
+                }
+                if (file_info_internal.offset_curfile == UINT32_MAX)
+                {
+                    /* Relative Header offset */
+                    if (unzReadUInt64(&s->z_filefunc, s->filestream_with_CD, &value64) != UNZ_OK)
+                        err = UNZ_ERRNO;
+                    file_info_internal.offset_curfile = value64;
+                    file_info.disk_offset = value64;
+                }
+                if (file_info.disk_num_start == UINT32_MAX)
+                {
+                    /* Disk Start Number */
+                    if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &file_info.disk_num_start) != UNZ_OK)
+                        err = UNZ_ERRNO;
+                }
+            }
+#ifdef HAVE_AES
+            /* AES header */
+            else if (extra_header_id == 0x9901)
+            {
+                uint8_t value8 = 0;
+
+                /* Subtract size of AES field, since AES is handled internally */
+                file_info.size_file_extra_internal += 2 + 2 + extra_data_size;
+
+                /* Verify version info */
+                if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &value16) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                /* Support AE-1 and AE-2 */
+                if (value16 != 1 && value16 != 2)
+                    err = UNZ_ERRNO;
+                file_info_internal.aes_version = value16;
+                if (unzReadUInt8(&s->z_filefunc, s->filestream_with_CD, &value8) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                if ((char)value8 != 'A')
+                    err = UNZ_ERRNO;
+                if (unzReadUInt8(&s->z_filefunc, s->filestream_with_CD, &value8) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                if ((char)value8 != 'E')
+                    err = UNZ_ERRNO;
+                /* Get AES encryption strength and actual compression method */
+                if (unzReadUInt8(&s->z_filefunc, s->filestream_with_CD, &value8) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                file_info_internal.aes_encryption_mode = value8;
+                if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &value16) != UNZ_OK)
+                    err = UNZ_ERRNO;
+                file_info_internal.aes_compression_method = value16;
+            }
+#endif
+            else
+            {
+                if (ZSEEK64(s->z_filefunc, s->filestream_with_CD, extra_data_size, ZLIB_FILEFUNC_SEEK_CUR) != 0)
+                    err = UNZ_ERRNO;
+            }
+
+            extra_pos += 2 + 2 + extra_data_size;
+        }
+    }
+
+    if (file_info.disk_num_start == s->gi.number_disk_with_CD)
+        file_info_internal.byte_before_the_zipfile = s->byte_before_the_zipfile;
+    else
+        file_info_internal.byte_before_the_zipfile = 0;
+
+    if (err == UNZ_OK)
+        err = unzGetCurrentFileInfoField(file, &seek, comment, comment_size, file_info.size_file_comment, 1);
+
+    if ((err == UNZ_OK) && (pfile_info != NULL))
+        *pfile_info = file_info;
+    if ((err == UNZ_OK) && (pfile_info_internal != NULL))
+        *pfile_info_internal = file_info_internal;
+
+    return err;
+}
+
+extern int ZEXPORT unzGetCurrentFileInfo(unzFile file, unz_file_info *pfile_info, char *filename,
+    uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size)
+{
+    unz_file_info64 file_info64;
+    int err = UNZ_OK;
+
+    err = unzGetCurrentFileInfoInternal(file, &file_info64, NULL, filename, filename_size,
+                extrafield, extrafield_size, comment, comment_size);
+
+    if ((err == UNZ_OK) && (pfile_info != NULL))
+    {
+        pfile_info->version = file_info64.version;
+        pfile_info->version_needed = file_info64.version_needed;
+        pfile_info->flag = file_info64.flag;
+        pfile_info->compression_method = file_info64.compression_method;
+        pfile_info->dos_date = file_info64.dos_date;
+        pfile_info->crc = file_info64.crc;
+
+        pfile_info->size_filename = file_info64.size_filename;
+        pfile_info->size_file_extra = file_info64.size_file_extra - file_info64.size_file_extra_internal;
+        pfile_info->size_file_comment = file_info64.size_file_comment;
+
+        pfile_info->disk_num_start = (uint16_t)file_info64.disk_num_start;
+        pfile_info->internal_fa = file_info64.internal_fa;
+        pfile_info->external_fa = file_info64.external_fa;
+
+        pfile_info->compressed_size = (uint32_t)file_info64.compressed_size;
+        pfile_info->uncompressed_size = (uint32_t)file_info64.uncompressed_size;
+    }
+    return err;
+}
+
+extern int ZEXPORT unzGetCurrentFileInfo64(unzFile file, unz_file_info64 * pfile_info, char *filename,
+    uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size)
+{
+    return unzGetCurrentFileInfoInternal(file, pfile_info, NULL, filename, filename_size,
+        extrafield, extrafield_size, comment, comment_size);
+}
+
+/* Read the local header of the current zipfile. Check the coherency of the local header and info in the
+   end of central directory about this file store in *piSizeVar the size of extra info in local header
+   (filename and size of extra field data) */
+static int unzCheckCurrentFileCoherencyHeader(unz64_internal *s, uint32_t *psize_variable, uint64_t *poffset_local_extrafield,
+    uint16_t *psize_local_extrafield)
+{
+    uint32_t magic = 0;
+    uint16_t value16 = 0;
+    uint32_t value32 = 0;
+    uint32_t flags = 0;
+    uint16_t size_filename = 0;
+    uint16_t size_extra_field = 0;
+    uint16_t compression_method = 0;
+    int err = UNZ_OK;
+
+    if (psize_variable == NULL)
+        return UNZ_PARAMERROR;
+    *psize_variable = 0;
+    if (poffset_local_extrafield == NULL)
+        return UNZ_PARAMERROR;
+    *poffset_local_extrafield = 0;
+    if (psize_local_extrafield == NULL)
+        return UNZ_PARAMERROR;
+    *psize_local_extrafield = 0;
+
+    err = unzGoToNextDisk((unzFile)s);
+    if (err != UNZ_OK)
+        return err;
+
+    if (ZSEEK64(s->z_filefunc, s->filestream, s->cur_file_info_internal.offset_curfile +
+        s->cur_file_info_internal.byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET) != 0)
+        return UNZ_ERRNO;
+
+    if (err == UNZ_OK)
+    {
+        if (unzReadUInt32(&s->z_filefunc, s->filestream, &magic) != UNZ_OK)
+            err = UNZ_ERRNO;
+        else if (magic != LOCALHEADERMAGIC)
+            err = UNZ_BADZIPFILE;
+    }
+
+    if (unzReadUInt16(&s->z_filefunc, s->filestream, &value16) != UNZ_OK)
+        err = UNZ_ERRNO;
+    if (unzReadUInt16(&s->z_filefunc, s->filestream, &value16) != UNZ_OK)
+        err = UNZ_ERRNO;
+    flags = value16;
+    if (unzReadUInt16(&s->z_filefunc, s->filestream, &value16) != UNZ_OK)
+        err = UNZ_ERRNO;
+    else if ((err == UNZ_OK) && (value16 != s->cur_file_info.compression_method))
+        err = UNZ_BADZIPFILE;
+
+    compression_method = s->cur_file_info.compression_method;
+#ifdef HAVE_AES
+    if (compression_method == AES_METHOD)
+        compression_method = s->cur_file_info_internal.aes_compression_method;
+#endif
+
+    if ((err == UNZ_OK) && (compression_method != 0) && (compression_method != Z_DEFLATED))
+    {
+#ifdef HAVE_BZIP2
+        if (compression_method != Z_BZIP2ED)
+#endif
+            err = UNZ_BADZIPFILE;
+    }
+
+    if (unzReadUInt32(&s->z_filefunc, s->filestream, &value32) != UNZ_OK) /* date/time */
+        err = UNZ_ERRNO;
+    if (unzReadUInt32(&s->z_filefunc, s->filestream, &value32) != UNZ_OK) /* crc */
+        err = UNZ_ERRNO;
+    else if ((err == UNZ_OK) && (value32 != s->cur_file_info.crc) && ((flags & 8) == 0))
+        err = UNZ_BADZIPFILE;
+    if (unzReadUInt32(&s->z_filefunc, s->filestream, &value32) != UNZ_OK) /* size compr */
+        err = UNZ_ERRNO;
+    else if ((value32 != UINT32_MAX) && (err == UNZ_OK) && (value32 != s->cur_file_info.compressed_size) && ((flags & 8) == 0))
+        err = UNZ_BADZIPFILE;
+    if (unzReadUInt32(&s->z_filefunc, s->filestream, &value32) != UNZ_OK) /* size uncompr */
+        err = UNZ_ERRNO;
+    else if ((value32 != UINT32_MAX) && (err == UNZ_OK) && (value32 != s->cur_file_info.uncompressed_size) && ((flags & 8) == 0))
+        err = UNZ_BADZIPFILE;
+    if (unzReadUInt16(&s->z_filefunc, s->filestream, &size_filename) != UNZ_OK)
+        err = UNZ_ERRNO;
+
+    *psize_variable += size_filename;
+
+    if (unzReadUInt16(&s->z_filefunc, s->filestream, &size_extra_field) != UNZ_OK)
+        err = UNZ_ERRNO;
+
+    *poffset_local_extrafield = s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + size_filename;
+    *psize_local_extrafield = size_extra_field;
+    *psize_variable += size_extra_field;
+
+    return err;
+}
+
+extern uint64_t ZEXPORT unzCountEntries(const unzFile file)
+{
+    if (file == NULL)
+        return 0;
+
+    unz64_internal s = *(unz64_internal*)file;
+
+    s.pos_in_central_dir = s.offset_central_dir;
+    s.num_file = 0;
+    while (UNZ_OK == unzGetCurrentFileInfoInternal(&s,
+                                                   &s.cur_file_info,
+                                                   &s.cur_file_info_internal,
+                                                   NULL, 0, NULL, 0, NULL, 0))
+    {
+        s.pos_in_central_dir += SIZECENTRALDIRITEM
+        + s.cur_file_info.size_filename
+        + s.cur_file_info.size_file_extra
+        + s.cur_file_info.size_file_comment;
+        s.num_file += 1;
+    }
+    return s.num_file;
+}
+
+/*
+  Open for reading data the current file in the zipfile.
+  If there is no error and the file is opened, the return value is UNZ_OK.
+*/
+extern int ZEXPORT unzOpenCurrentFile3(unzFile file, int *method, int *level, int raw, const char *password)
+{
+    unz64_internal *s = NULL;
+    file_in_zip64_read_info_s *pfile_in_zip_read_info = NULL;
+    uint16_t compression_method = 0;
+    uint64_t offset_local_extrafield = 0;
+    uint16_t size_local_extrafield = 0;
+    uint32_t size_variable = 0;
+    int err = UNZ_OK;
+#ifndef NOUNCRYPT
+    char source[12];
+#else
+    if (password != NULL)
+        return UNZ_PARAMERROR;
+#endif
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+    if (!s->current_file_ok)
+        return UNZ_PARAMERROR;
+
+    if (s->pfile_in_zip_read != NULL)
+        unzCloseCurrentFile(file);
+
+    if (unzCheckCurrentFileCoherencyHeader(s, &size_variable, &offset_local_extrafield, &size_local_extrafield) != UNZ_OK)
+        return UNZ_BADZIPFILE;
+
+    compression_method = s->cur_file_info.compression_method;
+#ifdef HAVE_AES
+    if (compression_method == AES_METHOD)
+    {
+        compression_method = s->cur_file_info_internal.aes_compression_method;
+        if (password == NULL)
+        {
+            return UNZ_PARAMERROR;
+        }
+    }
+#endif
+
+    if (method != NULL)
+        *method = compression_method;
+
+    if (level != NULL)
+    {
+        *level = 6;
+        switch (s->cur_file_info.flag & 0x06)
+        {
+          case 6 : *level = 1; break;
+          case 4 : *level = 2; break;
+          case 2 : *level = 9; break;
+        }
+    }
+
+    if ((compression_method != 0) && (compression_method != Z_DEFLATED))
+    {
+#ifdef HAVE_BZIP2
+        if (compression_method != Z_BZIP2ED)
+#endif
+        {
+            return UNZ_BADZIPFILE;
+        }
+    }
+
+    pfile_in_zip_read_info = (file_in_zip64_read_info_s*)ALLOC(sizeof(file_in_zip64_read_info_s));
+    if (pfile_in_zip_read_info == NULL)
+        return UNZ_INTERNALERROR;
+
+    pfile_in_zip_read_info->read_buffer = (uint8_t*)ALLOC(UNZ_BUFSIZE);
+    if (pfile_in_zip_read_info->read_buffer == NULL)
+    {
+        TRYFREE(pfile_in_zip_read_info);
+        return UNZ_INTERNALERROR;
+    }
+
+    pfile_in_zip_read_info->stream_initialised = 0;
+
+    pfile_in_zip_read_info->filestream = s->filestream;
+    pfile_in_zip_read_info->z_filefunc = s->z_filefunc;
+
+    pfile_in_zip_read_info->raw = raw;
+    pfile_in_zip_read_info->crc32 = 0;
+    pfile_in_zip_read_info->crc32_expected = s->cur_file_info.crc;
+    pfile_in_zip_read_info->total_out_64 = 0;
+    pfile_in_zip_read_info->compression_method = compression_method;
+
+    pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield;
+    pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield;
+    pfile_in_zip_read_info->pos_local_extrafield = 0;
+
+    pfile_in_zip_read_info->rest_read_compressed = s->cur_file_info.compressed_size;
+    pfile_in_zip_read_info->rest_read_uncompressed = s->cur_file_info.uncompressed_size;
+    pfile_in_zip_read_info->byte_before_the_zipfile = 0;
+
+    if (s->number_disk == s->gi.number_disk_with_CD)
+        pfile_in_zip_read_info->byte_before_the_zipfile = s->byte_before_the_zipfile;
+
+    pfile_in_zip_read_info->pos_in_zipfile = s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + size_variable;
+
+    pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
+    pfile_in_zip_read_info->stream.zfree = (free_func)0;
+    pfile_in_zip_read_info->stream.opaque = (voidpf)s;
+    pfile_in_zip_read_info->stream.total_out = 0;
+    pfile_in_zip_read_info->stream.total_in = 0;
+    pfile_in_zip_read_info->stream.next_in = NULL;
+    pfile_in_zip_read_info->stream.avail_in = 0;
+
+    if (!raw)
+    {
+        if (compression_method == Z_BZIP2ED)
+        {
+#ifdef HAVE_BZIP2
+            pfile_in_zip_read_info->bstream.bzalloc = (void *(*) (void *, int, int))0;
+            pfile_in_zip_read_info->bstream.bzfree = (free_func)0;
+            pfile_in_zip_read_info->bstream.opaque = (voidpf)0;
+            pfile_in_zip_read_info->bstream.state = (voidpf)0;
+
+            err = BZ2_bzDecompressInit(&pfile_in_zip_read_info->bstream, 0, 0);
+            if (err == Z_OK)
+            {
+                pfile_in_zip_read_info->stream_initialised = Z_BZIP2ED;
+            }
+            else
+            {
+                TRYFREE(pfile_in_zip_read_info);
+                return err;
+            }
+#else
+            pfile_in_zip_read_info->raw = 1;
+#endif
+        }
+        else if (compression_method == Z_DEFLATED)
+        {
+#ifdef HAVE_APPLE_COMPRESSION
+            err = compression_stream_init(&pfile_in_zip_read_info->astream, COMPRESSION_STREAM_DECODE, COMPRESSION_ZLIB);
+            if (err == COMPRESSION_STATUS_ERROR)
+                err = UNZ_INTERNALERROR;
+            else
+                err = Z_OK;
+#else
+            err = inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS);
+#endif
+            if (err == Z_OK)
+            {
+                pfile_in_zip_read_info->stream_initialised = Z_DEFLATED;
+            }
+            else
+            {
+                TRYFREE(pfile_in_zip_read_info);
+                return err;
+            }
+            /* windowBits is passed < 0 to tell that there is no zlib header.
+             * Note that in this case inflate *requires* an extra "dummy" byte
+             * after the compressed stream in order to complete decompression and
+             * return Z_STREAM_END.
+             * In unzip, i don't wait absolutely Z_STREAM_END because I known the
+             * size of both compressed and uncompressed data
+             */
+        }
+    }
+
+    s->pfile_in_zip_read = pfile_in_zip_read_info;
+
+#ifndef NOUNCRYPT
+    s->pcrc_32_tab = NULL;
+
+    if ((password != NULL) && ((s->cur_file_info.flag & 1) != 0))
+    {
+        if (ZSEEK64(s->z_filefunc, s->filestream,
+                  s->pfile_in_zip_read->pos_in_zipfile + s->pfile_in_zip_read->byte_before_the_zipfile,
+                  ZLIB_FILEFUNC_SEEK_SET) != 0)
+            return UNZ_INTERNALERROR;
+#ifdef HAVE_AES
+        if (s->cur_file_info.compression_method == AES_METHOD)
+        {
+            unsigned char passverify_archive[AES_PWVERIFYSIZE];
+            unsigned char passverify_password[AES_PWVERIFYSIZE];
+            unsigned char salt_value[AES_MAXSALTLENGTH];
+            uint32_t salt_length = 0;
+
+            if ((s->cur_file_info_internal.aes_encryption_mode < 1) ||
+                (s->cur_file_info_internal.aes_encryption_mode > 3))
+                return UNZ_INTERNALERROR;
+
+            salt_length = SALT_LENGTH(s->cur_file_info_internal.aes_encryption_mode);
+
+            if (ZREAD64(s->z_filefunc, s->filestream, salt_value, salt_length) != salt_length)
+                return UNZ_INTERNALERROR;
+            if (ZREAD64(s->z_filefunc, s->filestream, passverify_archive, AES_PWVERIFYSIZE) != AES_PWVERIFYSIZE)
+                return UNZ_INTERNALERROR;
+
+            fcrypt_init(s->cur_file_info_internal.aes_encryption_mode, (uint8_t *)password,
+                (uint32_t)strlen(password), salt_value, passverify_password, &s->pfile_in_zip_read->aes_ctx);
+
+            if (memcmp(passverify_archive, passverify_password, AES_PWVERIFYSIZE) != 0)
+                return UNZ_BADPASSWORD;
+
+            s->pfile_in_zip_read->rest_read_compressed -= salt_length + AES_PWVERIFYSIZE;
+            s->pfile_in_zip_read->rest_read_compressed -= AES_AUTHCODESIZE;
+
+            s->pfile_in_zip_read->pos_in_zipfile += salt_length + AES_PWVERIFYSIZE;
+        }
+        else
+#endif
+        {
+            int i;
+            s->pcrc_32_tab = (const z_crc_t*)get_crc_table();
+            init_keys(password, s->keys, s->pcrc_32_tab);
+
+            if (ZREAD64(s->z_filefunc, s->filestream, source, 12) < 12)
+                return UNZ_INTERNALERROR;
+
+            for (i = 0; i < 12; i++)
+                zdecode(s->keys, s->pcrc_32_tab, source[i]);
+            uint8_t expected = (s->cur_file_info.flag & (1 << 3)) ?
+                s->cur_file_info.dos_date >> 8 :
+                s->cur_file_info.crc >> 24;
+            uint8_t actual = (uint8_t)source[11];
+            if (expected != actual) {
+              return UNZ_BADPASSWORD;
+            }
+
+            s->pfile_in_zip_read->rest_read_compressed -= 12;
+            s->pfile_in_zip_read->pos_in_zipfile += 12;
+        }
+    }
+#endif
+
+    return UNZ_OK;
+}
+
+extern int ZEXPORT unzOpenCurrentFile(unzFile file)
+{
+    return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL);
+}
+
+extern int ZEXPORT unzOpenCurrentFilePassword(unzFile file, const char *password)
+{
+    return unzOpenCurrentFile3(file, NULL, NULL, 0, password);
+}
+
+extern int ZEXPORT unzOpenCurrentFile2(unzFile file, int *method, int *level, int raw)
+{
+    return unzOpenCurrentFile3(file, method, level, raw, NULL);
+}
+
+/* Read bytes from the current file.
+   buf contain buffer where data must be copied
+   len the size of buf.
+
+   return the number of byte copied if some bytes are copied
+   return 0 if the end of file was reached
+   return <0 with error code if there is an error (UNZ_ERRNO for IO error, or zLib error for uncompress error) */
+extern int ZEXPORT unzReadCurrentFile(unzFile file, voidp buf, uint32_t len)
+{
+    unz64_internal *s = NULL;
+    uint32_t read = 0;
+    int err = UNZ_OK;
+
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+
+    if (s->pfile_in_zip_read == NULL)
+        return UNZ_PARAMERROR;
+    if (s->pfile_in_zip_read->read_buffer == NULL)
+        return UNZ_END_OF_LIST_OF_FILE;
+    if (len == 0)
+        return 0;
+    // avail_out is uInt, so uint32_t len might allow requesting a larger buffer than zlib can support
+    if (len > UINT_MAX)
+        return UNZ_PARAMERROR;
+
+    s->pfile_in_zip_read->stream.next_out = (uint8_t*)buf;
+    s->pfile_in_zip_read->stream.avail_out = (uInt)len;
+
+    if ((s->pfile_in_zip_read->compression_method == 0) || (s->pfile_in_zip_read->raw))
+    {
+        if (len > s->pfile_in_zip_read->rest_read_compressed + s->pfile_in_zip_read->stream.avail_in)
+            s->pfile_in_zip_read->stream.avail_out = (uInt)s->pfile_in_zip_read->rest_read_compressed +
+            s->pfile_in_zip_read->stream.avail_in;
+    }
+
+    do
+    {
+        if (s->pfile_in_zip_read->stream.avail_in == 0)
+        {
+            uint32_t bytes_to_read = UNZ_BUFSIZE;
+            uint32_t bytes_not_read = 0;
+            uint32_t bytes_read = 0;
+            uint32_t total_bytes_read = 0;
+
+            if (s->pfile_in_zip_read->stream.next_in != NULL)
+                bytes_not_read = (uint32_t)(s->pfile_in_zip_read->read_buffer + UNZ_BUFSIZE -
+                    s->pfile_in_zip_read->stream.next_in);
+            bytes_to_read -= bytes_not_read;
+            if (bytes_not_read > 0)
+                memmove(s->pfile_in_zip_read->read_buffer, s->pfile_in_zip_read->stream.next_in, bytes_not_read);
+            if (s->pfile_in_zip_read->rest_read_compressed < bytes_to_read)
+                bytes_to_read = (uint32_t)s->pfile_in_zip_read->rest_read_compressed;
+
+            while (total_bytes_read != bytes_to_read)
+            {
+                if (ZSEEK64(s->pfile_in_zip_read->z_filefunc, s->pfile_in_zip_read->filestream,
+                        s->pfile_in_zip_read->pos_in_zipfile + s->pfile_in_zip_read->byte_before_the_zipfile,
+                        ZLIB_FILEFUNC_SEEK_SET) != 0)
+                    return UNZ_ERRNO;
+
+                bytes_read = ZREAD64(s->pfile_in_zip_read->z_filefunc, s->pfile_in_zip_read->filestream,
+                          s->pfile_in_zip_read->read_buffer + bytes_not_read + total_bytes_read,
+                          bytes_to_read - total_bytes_read);
+
+                total_bytes_read += bytes_read;
+                s->pfile_in_zip_read->pos_in_zipfile += bytes_read;
+
+                if (bytes_read == 0)
+                {
+                    if (ZERROR64(s->pfile_in_zip_read->z_filefunc, s->pfile_in_zip_read->filestream))
+                        return UNZ_ERRNO;
+
+                    err = unzGoToNextDisk(file);
+                    if (err != UNZ_OK)
+                        return err;
+
+                    s->pfile_in_zip_read->pos_in_zipfile = 0;
+                    s->pfile_in_zip_read->filestream = s->filestream;
+                }
+            }
+
+#ifndef NOUNCRYPT
+            if ((s->cur_file_info.flag & 1) != 0)
+            {
+#ifdef HAVE_AES
+                if (s->cur_file_info.compression_method == AES_METHOD)
+                {
+                    fcrypt_decrypt(s->pfile_in_zip_read->read_buffer, bytes_to_read, &s->pfile_in_zip_read->aes_ctx);
+                }
+                else
+#endif
+                if (s->pcrc_32_tab != NULL)
+                {
+                    uint32_t i = 0;
+
+                    for (i = 0; i < total_bytes_read; i++)
+                      s->pfile_in_zip_read->read_buffer[i] =
+                          zdecode(s->keys, s->pcrc_32_tab, s->pfile_in_zip_read->read_buffer[i]);
+                }
+            }
+#endif
+
+            s->pfile_in_zip_read->rest_read_compressed -= total_bytes_read;
+            s->pfile_in_zip_read->stream.next_in = (uint8_t*)s->pfile_in_zip_read->read_buffer;
+            s->pfile_in_zip_read->stream.avail_in = (uInt)(bytes_not_read + total_bytes_read);
+        }
+
+        if ((s->pfile_in_zip_read->compression_method == 0) || (s->pfile_in_zip_read->raw))
+        {
+            uint32_t i = 0;
+            uint32_t copy = 0;
+
+            if ((s->pfile_in_zip_read->stream.avail_in == 0) &&
+                (s->pfile_in_zip_read->rest_read_compressed == 0))
+                return (read == 0) ? UNZ_EOF : read;
+
+            if (s->pfile_in_zip_read->stream.avail_out < s->pfile_in_zip_read->stream.avail_in)
+                copy = s->pfile_in_zip_read->stream.avail_out;
+            else
+                copy = s->pfile_in_zip_read->stream.avail_in;
+
+            for (i = 0; i < copy; i++)
+                *(s->pfile_in_zip_read->stream.next_out + i) =
+                        *(s->pfile_in_zip_read->stream.next_in + i);
+
+            s->pfile_in_zip_read->total_out_64 = s->pfile_in_zip_read->total_out_64 + copy;
+            s->pfile_in_zip_read->rest_read_uncompressed -= copy;
+            s->pfile_in_zip_read->crc32 = (uint32_t)crc32(s->pfile_in_zip_read->crc32,
+                                s->pfile_in_zip_read->stream.next_out, copy);
+
+            s->pfile_in_zip_read->stream.avail_in -= copy;
+            s->pfile_in_zip_read->stream.avail_out -= copy;
+            s->pfile_in_zip_read->stream.next_out += copy;
+            s->pfile_in_zip_read->stream.next_in += copy;
+            s->pfile_in_zip_read->stream.total_out += copy;
+
+            read += copy;
+        }
+        else if (s->pfile_in_zip_read->compression_method == Z_BZIP2ED)
+        {
+#ifdef HAVE_BZIP2
+            uint64_t total_out_before = 0;
+            uint64_t total_out_after = 0;
+            uint64_t out_bytes = 0;
+            const uint8_t *buf_before = NULL;
+
+            s->pfile_in_zip_read->bstream.next_in        = (char*)s->pfile_in_zip_read->stream.next_in;
+            s->pfile_in_zip_read->bstream.avail_in       = s->pfile_in_zip_read->stream.avail_in;
+            s->pfile_in_zip_read->bstream.total_in_lo32  = (uint32_t)s->pfile_in_zip_read->stream.total_in;
+            s->pfile_in_zip_read->bstream.total_in_hi32  = s->pfile_in_zip_read->stream.total_in >> 32;
+
+            s->pfile_in_zip_read->bstream.next_out       = (char*)s->pfile_in_zip_read->stream.next_out;
+            s->pfile_in_zip_read->bstream.avail_out      = s->pfile_in_zip_read->stream.avail_out;
+            s->pfile_in_zip_read->bstream.total_out_lo32 = (uint32_t)s->pfile_in_zip_read->stream.total_out;
+            s->pfile_in_zip_read->bstream.total_out_hi32 = s->pfile_in_zip_read->stream.total_out >> 32;
+
+            total_out_before = s->pfile_in_zip_read->bstream.total_out_lo32 +
+                (((uint32_t)s->pfile_in_zip_read->bstream.total_out_hi32) << 32);
+            buf_before = (const uint8_t*)s->pfile_in_zip_read->bstream.next_out;
+
+            err = BZ2_bzDecompress(&s->pfile_in_zip_read->bstream);
+
+            total_out_after = s->pfile_in_zip_read->bstream.total_out_lo32 +
+                (((uint32_t)s->pfile_in_zip_read->bstream.total_out_hi32) << 32);
+
+            out_bytes = total_out_after - total_out_before;
+
+            s->pfile_in_zip_read->total_out_64 = s->pfile_in_zip_read->total_out_64 + out_bytes;
+            s->pfile_in_zip_read->rest_read_uncompressed -= out_bytes;
+            s->pfile_in_zip_read->crc32 = crc32(s->pfile_in_zip_read->crc32, buf_before, (uint32_t)out_bytes);
+
+            read += (uint32_t)out_bytes;
+
+            s->pfile_in_zip_read->stream.next_in   = (uint8_t*)s->pfile_in_zip_read->bstream.next_in;
+            s->pfile_in_zip_read->stream.avail_in  = s->pfile_in_zip_read->bstream.avail_in;
+            s->pfile_in_zip_read->stream.total_in  = s->pfile_in_zip_read->bstream.total_in_lo32;
+            s->pfile_in_zip_read->stream.next_out  = (uint8_t*)s->pfile_in_zip_read->bstream.next_out;
+            s->pfile_in_zip_read->stream.avail_out = s->pfile_in_zip_read->bstream.avail_out;
+            s->pfile_in_zip_read->stream.total_out = s->pfile_in_zip_read->bstream.total_out_lo32;
+
+            if (err == BZ_STREAM_END)
+                return (read == 0) ? UNZ_EOF : read;
+            if (err != BZ_OK)
+                break;
+#endif
+        }
+#ifdef HAVE_APPLE_COMPRESSION
+        else
+        {
+            uint64_t total_out_before = 0;
+            uint64_t total_out_after = 0;
+            uint64_t out_bytes = 0;
+            const uint8_t *buf_before = NULL;
+
+            s->pfile_in_zip_read->astream.src_ptr = s->pfile_in_zip_read->stream.next_in;
+            s->pfile_in_zip_read->astream.src_size = s->pfile_in_zip_read->stream.avail_in;
+            s->pfile_in_zip_read->astream.dst_ptr = s->pfile_in_zip_read->stream.next_out;
+            s->pfile_in_zip_read->astream.dst_size = len;
+
+            total_out_before = s->pfile_in_zip_read->stream.total_out;
+            buf_before = s->pfile_in_zip_read->stream.next_out;
+
+            compression_status status;
+            compression_stream_flags flags;
+
+            if (s->pfile_in_zip_read->stream.avail_in == 0)
+            {
+                flags = COMPRESSION_STREAM_FINALIZE;
+            }
+
+            status = compression_stream_process(&s->pfile_in_zip_read->astream, flags);
+
+            total_out_after = len - s->pfile_in_zip_read->astream.dst_size;
+            out_bytes = total_out_after - total_out_before;
+
+            s->pfile_in_zip_read->total_out_64 += out_bytes;
+            s->pfile_in_zip_read->rest_read_uncompressed -= out_bytes;
+            s->pfile_in_zip_read->crc32 =
+                crc32(s->pfile_in_zip_read->crc32, buf_before, (uint32_t)out_bytes);
+
+            read += (uint32_t)out_bytes;
+
+            s->pfile_in_zip_read->stream.next_in = s->pfile_in_zip_read->astream.src_ptr;
+            s->pfile_in_zip_read->stream.avail_in = s->pfile_in_zip_read->astream.src_size;
+            s->pfile_in_zip_read->stream.next_out = s->pfile_in_zip_read->astream.dst_ptr;
+            s->pfile_in_zip_read->stream.avail_out = s->pfile_in_zip_read->astream.dst_size;
+
+            if (status == COMPRESSION_STATUS_END)
+                return (read == 0) ? UNZ_EOF : read;
+            if (status == COMPRESSION_STATUS_ERROR)
+                return Z_DATA_ERROR;
+            return read;
+        }
+#else
+        else
+        {
+            uint64_t total_out_before = 0;
+            uint64_t total_out_after = 0;
+            uint64_t out_bytes = 0;
+            const uint8_t *buf_before = NULL;
+            int flush = Z_SYNC_FLUSH;
+
+            total_out_before = s->pfile_in_zip_read->stream.total_out;
+            buf_before = s->pfile_in_zip_read->stream.next_out;
+
+            /*
+            if ((pfile_in_zip_read_info->rest_read_uncompressed ==
+                     pfile_in_zip_read_info->stream.avail_out) &&
+                (pfile_in_zip_read_info->rest_read_compressed == 0))
+                flush = Z_FINISH;
+            */
+            err = inflate(&s->pfile_in_zip_read->stream, flush);
+
+            if ((err >= 0) && (s->pfile_in_zip_read->stream.msg != NULL))
+                err = Z_DATA_ERROR;
+
+            total_out_after = s->pfile_in_zip_read->stream.total_out;
+            out_bytes = total_out_after - total_out_before;
+
+            s->pfile_in_zip_read->total_out_64 += out_bytes;
+            s->pfile_in_zip_read->rest_read_uncompressed -= out_bytes;
+            s->pfile_in_zip_read->crc32 =
+                (uint32_t)crc32(s->pfile_in_zip_read->crc32, buf_before, (uint32_t)out_bytes);
+
+            read += (uint32_t)out_bytes;
+
+            if (err == Z_STREAM_END)
+                return (read == 0) ? UNZ_EOF : read;
+            if (err != Z_OK)
+                break;
+        }
+#endif
+    }
+    while (s->pfile_in_zip_read->stream.avail_out > 0);
+
+    if (err == Z_OK)
+        return read;
+    return err;
+}
+
+extern int ZEXPORT unzGetLocalExtrafield(unzFile file, voidp buf, uint32_t len)
+{
+    unz64_internal *s = NULL;
+    uint64_t size_to_read = 0;
+    uint32_t read_now = 0;
+
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+    if (s->pfile_in_zip_read == NULL)
+        return UNZ_PARAMERROR;
+
+    size_to_read = s->pfile_in_zip_read->size_local_extrafield - s->pfile_in_zip_read->pos_local_extrafield;
+
+    if (buf == NULL)
+        return (int)size_to_read;
+
+    if (len > size_to_read)
+        read_now = (uint32_t)size_to_read;
+    else
+        read_now = len;
+
+    if (read_now == 0)
+        return 0;
+
+    if (ZSEEK64(s->pfile_in_zip_read->z_filefunc, s->pfile_in_zip_read->filestream,
+        s->pfile_in_zip_read->offset_local_extrafield + s->pfile_in_zip_read->pos_local_extrafield,
+        ZLIB_FILEFUNC_SEEK_SET) != 0)
+        return UNZ_ERRNO;
+
+    if (ZREAD64(s->pfile_in_zip_read->z_filefunc, s->pfile_in_zip_read->filestream, buf, read_now) != read_now)
+        return UNZ_ERRNO;
+
+    return (int)read_now;
+}
+
+extern int ZEXPORT unzCloseCurrentFile(unzFile file)
+{
+    unz64_internal *s = NULL;
+    file_in_zip64_read_info_s *pfile_in_zip_read_info = NULL;
+    int err = UNZ_OK;
+
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+    pfile_in_zip_read_info = s->pfile_in_zip_read;
+    if (pfile_in_zip_read_info == NULL)
+        return UNZ_PARAMERROR;
+
+#ifdef HAVE_AES
+    if (s->cur_file_info.compression_method == AES_METHOD)
+    {
+        unsigned char authcode[AES_AUTHCODESIZE];
+        unsigned char rauthcode[AES_AUTHCODESIZE];
+
+        if (ZREAD64(s->z_filefunc, s->filestream, authcode, AES_AUTHCODESIZE) != AES_AUTHCODESIZE)
+            return UNZ_ERRNO;
+
+        if (fcrypt_end(rauthcode, &s->pfile_in_zip_read->aes_ctx) != AES_AUTHCODESIZE)
+            err = UNZ_CRCERROR;
+        if (memcmp(authcode, rauthcode, AES_AUTHCODESIZE) != 0)
+            err = UNZ_CRCERROR;
+    }
+    /* AES zip version AE-1 will expect a valid crc as well */
+    if ((s->cur_file_info.compression_method != AES_METHOD) ||
+        (s->cur_file_info_internal.aes_version == 0x0001))
+#endif
+    {
+        if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) &&
+            (!pfile_in_zip_read_info->raw))
+        {
+            if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_expected)
+                err = UNZ_CRCERROR;
+        }
+    }
+
+    TRYFREE(pfile_in_zip_read_info->read_buffer);
+    pfile_in_zip_read_info->read_buffer = NULL;
+    if (pfile_in_zip_read_info->stream_initialised == Z_DEFLATED)
+    {
+#ifdef HAVE_APPLE_COMPRESSION
+        if (compression_stream_destroy)
+            compression_stream_destroy(&pfile_in_zip_read_info->astream);
+#else
+        inflateEnd(&pfile_in_zip_read_info->stream);
+#endif
+    }
+#ifdef HAVE_BZIP2
+    else if (pfile_in_zip_read_info->stream_initialised == Z_BZIP2ED)
+        BZ2_bzDecompressEnd(&pfile_in_zip_read_info->bstream);
+#endif
+
+    pfile_in_zip_read_info->stream_initialised = 0;
+    TRYFREE(pfile_in_zip_read_info);
+
+    s->pfile_in_zip_read = NULL;
+
+    return err;
+}
+
+extern int ZEXPORT unzGoToFirstFile2(unzFile file, unz_file_info64 *pfile_info, char *filename,
+    uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size)
+{
+    unz64_internal *s = NULL;
+    int err = UNZ_OK;
+
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+
+    if (s->gi.number_entry == 0)
+        return UNZ_END_OF_LIST_OF_FILE;
+
+    s->pos_in_central_dir = s->offset_central_dir;
+    s->num_file = 0;
+
+    err = unzGetCurrentFileInfoInternal(file, &s->cur_file_info, &s->cur_file_info_internal,
+            filename, filename_size, extrafield, extrafield_size, comment, comment_size);
+
+    s->current_file_ok = (err == UNZ_OK);
+    if ((err == UNZ_OK) && (pfile_info != NULL))
+        memcpy(pfile_info, &s->cur_file_info, sizeof(unz_file_info64));
+
+    return err;
+}
+
+extern int ZEXPORT unzGoToFirstFile(unzFile file)
+{
+    return unzGoToFirstFile2(file, NULL, NULL, 0, NULL, 0, NULL, 0);
+}
+
+extern int ZEXPORT unzGoToNextFile2(unzFile file, unz_file_info64 *pfile_info, char *filename,
+    uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size)
+{
+    unz64_internal *s = NULL;
+    int err = UNZ_OK;
+
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+
+    if (!s->current_file_ok)
+        return UNZ_END_OF_LIST_OF_FILE;
+    if (s->gi.number_entry != UINT16_MAX)    /* 2^16 files overflow hack */
+    {
+        if (s->num_file+1 == s->gi.number_entry)
+            return UNZ_END_OF_LIST_OF_FILE;
+    }
+
+    s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename +
+            s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment;
+    s->num_file += 1;
+
+    err = unzGetCurrentFileInfoInternal(file, &s->cur_file_info, &s->cur_file_info_internal,
+            filename, filename_size, extrafield, extrafield_size, comment, comment_size);
+
+    s->current_file_ok = (err == UNZ_OK);
+    if ((err == UNZ_OK) && (pfile_info != NULL))
+        memcpy(pfile_info, &s->cur_file_info, sizeof(unz_file_info64));
+
+    return err;
+}
+
+extern int ZEXPORT unzGoToNextFile(unzFile file)
+{
+    return unzGoToNextFile2(file, NULL, NULL, 0, NULL, 0, NULL, 0);
+}
+
+extern int ZEXPORT unzLocateFile(unzFile file, const char *filename, unzFileNameComparer filename_compare_func)
+{
+    unz64_internal *s = NULL;
+    unz_file_info64 cur_file_info_saved;
+    unz_file_info64_internal cur_file_info_internal_saved;
+    uint64_t num_file_saved = 0;
+    uint64_t pos_in_central_dir_saved = 0;
+    char current_filename[UNZ_MAXFILENAMEINZIP+1];
+    int err = UNZ_OK;
+
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    if (strlen(filename) >= UNZ_MAXFILENAMEINZIP)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+    if (!s->current_file_ok)
+        return UNZ_END_OF_LIST_OF_FILE;
+
+    /* Save the current state */
+    num_file_saved = s->num_file;
+    pos_in_central_dir_saved = s->pos_in_central_dir;
+    cur_file_info_saved = s->cur_file_info;
+    cur_file_info_internal_saved = s->cur_file_info_internal;
+
+    err = unzGoToFirstFile2(file, NULL, current_filename, sizeof(current_filename)-1, NULL, 0, NULL, 0);
+
+    while (err == UNZ_OK)
+    {
+        if (filename_compare_func != NULL)
+            err = filename_compare_func(file, current_filename, filename);
+        else
+            err = strcmp(current_filename, filename);
+        if (err == 0)
+            return UNZ_OK;
+        err = unzGoToNextFile2(file, NULL, current_filename, sizeof(current_filename)-1, NULL, 0, NULL, 0);
+    }
+
+    /* We failed, so restore the state of the 'current file' to where we were. */
+    s->num_file = num_file_saved;
+    s->pos_in_central_dir = pos_in_central_dir_saved;
+    s->cur_file_info = cur_file_info_saved;
+    s->cur_file_info_internal = cur_file_info_internal_saved;
+    return err;
+}
+
+extern int ZEXPORT unzGetFilePos(unzFile file, unz_file_pos *file_pos)
+{
+    unz64_file_pos file_pos64;
+    int err = unzGetFilePos64(file, &file_pos64);
+    if (err == UNZ_OK)
+    {
+        file_pos->pos_in_zip_directory = (uint32_t)file_pos64.pos_in_zip_directory;
+        file_pos->num_of_file = (uint32_t)file_pos64.num_of_file;
+    }
+    return err;
+}
+
+extern int ZEXPORT unzGoToFilePos(unzFile file, unz_file_pos *file_pos)
+{
+    unz64_file_pos file_pos64;
+    if (file_pos == NULL)
+        return UNZ_PARAMERROR;
+    file_pos64.pos_in_zip_directory = file_pos->pos_in_zip_directory;
+    file_pos64.num_of_file = file_pos->num_of_file;
+    return unzGoToFilePos64(file, &file_pos64);
+}
+
+extern int ZEXPORT unzGetFilePos64(unzFile file, unz64_file_pos *file_pos)
+{
+    unz64_internal *s = NULL;
+
+    if (file == NULL || file_pos == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+    if (!s->current_file_ok)
+        return UNZ_END_OF_LIST_OF_FILE;
+
+    file_pos->pos_in_zip_directory  = s->pos_in_central_dir;
+    file_pos->num_of_file = s->num_file;
+    return UNZ_OK;
+}
+
+extern int ZEXPORT unzGoToFilePos64(unzFile file, const unz64_file_pos *file_pos)
+{
+    unz64_internal *s = NULL;
+    int err = UNZ_OK;
+
+    if (file == NULL || file_pos == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+
+    /* Jump to the right spot */
+    s->pos_in_central_dir = file_pos->pos_in_zip_directory;
+    s->num_file = file_pos->num_of_file;
+
+    /* Set the current file */
+    err = unzGetCurrentFileInfoInternal(file, &s->cur_file_info, &s->cur_file_info_internal, NULL, 0, NULL, 0, NULL, 0);
+    /* Return results */
+    s->current_file_ok = (err == UNZ_OK);
+    return err;
+}
+
+extern int32_t ZEXPORT unzGetOffset(unzFile file)
+{
+    uint64_t offset64 = 0;
+
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    offset64 = unzGetOffset64(file);
+    return (int32_t)offset64;
+}
+
+extern int64_t ZEXPORT unzGetOffset64(unzFile file)
+{
+    unz64_internal *s = NULL;
+
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+    if (!s->current_file_ok)
+        return 0;
+    if (s->gi.number_entry != 0 && s->gi.number_entry != UINT16_MAX)
+    {
+        if (s->num_file == s->gi.number_entry)
+            return 0;
+    }
+    return s->pos_in_central_dir;
+}
+
+extern int ZEXPORT unzSetOffset(unzFile file, uint32_t pos)
+{
+    return unzSetOffset64(file, pos);
+}
+
+extern int ZEXPORT unzSetOffset64(unzFile file, uint64_t pos)
+{
+    unz64_internal *s = NULL;
+    int err = UNZ_OK;
+
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+    s->pos_in_central_dir = pos;
+    s->num_file = s->gi.number_entry; /* hack */
+
+    err = unzGetCurrentFileInfoInternal(file, &s->cur_file_info, &s->cur_file_info_internal, NULL, 0, NULL, 0, NULL, 0);
+
+    s->current_file_ok = (err == UNZ_OK);
+    return err;
+}
+
+extern int32_t ZEXPORT unzTell(unzFile file)
+{
+    unz64_internal *s = NULL;
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+    if (s->pfile_in_zip_read == NULL)
+        return UNZ_PARAMERROR;
+    return (int32_t)s->pfile_in_zip_read->stream.total_out;
+}
+
+extern int64_t ZEXPORT unzTell64(unzFile file)
+{
+    unz64_internal *s = NULL;
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+    if (s->pfile_in_zip_read == NULL)
+        return UNZ_PARAMERROR;
+    return s->pfile_in_zip_read->total_out_64;
+}
+
+extern int ZEXPORT unzSeek(unzFile file, uint32_t offset, int origin)
+{
+    return unzSeek64(file, offset, origin);
+}
+
+extern int ZEXPORT unzSeek64(unzFile file, uint64_t offset, int origin)
+{
+    unz64_internal *s = NULL;
+    uint64_t stream_pos_begin = 0;
+    uint64_t stream_pos_end = 0;
+    uint64_t position = 0;
+    int is_within_buffer = 0;
+
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+
+    if (s->pfile_in_zip_read == NULL)
+        return UNZ_ERRNO;
+    if (s->pfile_in_zip_read->compression_method != 0)
+        return UNZ_ERRNO;
+
+    if (origin == SEEK_SET)
+        position = offset;
+    else if (origin == SEEK_CUR)
+        position = s->pfile_in_zip_read->total_out_64 + offset;
+    else if (origin == SEEK_END)
+        position = s->cur_file_info.compressed_size + offset;
+    else
+        return UNZ_PARAMERROR;
+
+    if (position > s->cur_file_info.compressed_size)
+        return UNZ_PARAMERROR;
+
+    stream_pos_end = s->pfile_in_zip_read->pos_in_zipfile;
+    stream_pos_begin = stream_pos_end;
+
+    if (stream_pos_begin > UNZ_BUFSIZE)
+        stream_pos_begin -= UNZ_BUFSIZE;
+    else
+        stream_pos_begin = 0;
+
+    is_within_buffer =
+        (s->pfile_in_zip_read->stream.avail_in != 0) &&
+        (s->pfile_in_zip_read->rest_read_compressed != 0 || s->cur_file_info.compressed_size < UNZ_BUFSIZE) &&
+        (position >= stream_pos_begin && position < stream_pos_end);
+
+    if (is_within_buffer)
+    {
+        s->pfile_in_zip_read->stream.next_in += position - s->pfile_in_zip_read->total_out_64;
+        s->pfile_in_zip_read->stream.avail_in = (uInt)(stream_pos_end - position);
+    }
+    else
+    {
+        s->pfile_in_zip_read->stream.avail_in = 0;
+        s->pfile_in_zip_read->stream.next_in = 0;
+
+        s->pfile_in_zip_read->pos_in_zipfile = s->pfile_in_zip_read->offset_local_extrafield + position;
+        s->pfile_in_zip_read->rest_read_compressed = s->cur_file_info.compressed_size - position;
+    }
+
+    s->pfile_in_zip_read->rest_read_uncompressed -= (position - s->pfile_in_zip_read->total_out_64);
+    s->pfile_in_zip_read->stream.total_out = (uint32_t)position;
+    s->pfile_in_zip_read->total_out_64 = position;
+
+    return UNZ_OK;
+}
+
+extern int ZEXPORT unzEndOfFile(unzFile file)
+{
+    unz64_internal *s = NULL;
+    if (file == NULL)
+        return UNZ_PARAMERROR;
+    s = (unz64_internal*)file;
+    if (s->pfile_in_zip_read == NULL)
+        return UNZ_PARAMERROR;
+    if (s->pfile_in_zip_read->rest_read_uncompressed == 0)
+        return 1;
+    return 0;
+}
diff --git a/src/libgame/zip/unzip.h b/src/libgame/zip/unzip.h
new file mode 100644 (file)
index 0000000..4aa047e
--- /dev/null
@@ -0,0 +1,311 @@
+/* unzip.h -- IO for uncompress .zip files using zlib
+   Version 1.2.0, September 16th, 2017
+   part of the MiniZip project
+
+   Copyright (C) 2012-2017 Nathan Moinvaziri
+     https://github.com/nmoinvaz/minizip
+   Copyright (C) 2009-2010 Mathias Svensson
+     Modifications for Zip64 support on both zip and unzip
+     http://result42.com
+   Copyright (C) 2007-2008 Even Rouault
+     Modifications of Unzip for Zip64
+   Copyright (C) 1998-2010 Gilles Vollant
+     http://www.winimage.com/zLibDll/minizip.html
+
+   This program is distributed under the terms of the same license as zlib.
+   See the accompanying LICENSE file for the full text of the license.
+*/
+
+#ifndef _UNZ_H
+#define _UNZ_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef _ZLIB_H
+#include "zlib.h"
+#endif
+
+#ifndef _ZLIBIOAPI_H
+#include "ioapi.h"
+#endif
+
+#ifdef HAVE_BZIP2
+#include "bzlib.h"
+#endif
+
+#define Z_BZIP2ED 12
+
+#if defined(STRICTUNZIP) || defined(STRICTZIPUNZIP)
+/* like the STRICT of WIN32, we define a pointer that cannot be converted
+    from (void*) without cast */
+typedef struct TagunzFile__ { int unused; } unz_file__;
+typedef unz_file__ *unzFile;
+#else
+typedef voidp unzFile;
+#endif
+
+#define UNZ_OK                          (0)
+#define UNZ_END_OF_LIST_OF_FILE         (-100)
+#define UNZ_ERRNO                       (Z_ERRNO)
+#define UNZ_EOF                         (0)
+#define UNZ_PARAMERROR                  (-102)
+#define UNZ_BADZIPFILE                  (-103)
+#define UNZ_INTERNALERROR               (-104)
+#define UNZ_CRCERROR                    (-105)
+#define UNZ_BADPASSWORD                 (-106)
+
+/* unz_global_info structure contain global data about the ZIPfile
+   These data comes from the end of central dir */
+typedef struct unz_global_info64_s
+{
+    uint64_t number_entry;          /* total number of entries in the central dir on this disk */
+    uint32_t number_disk_with_CD;   /* number the the disk with central dir, used for spanning ZIP*/
+    uint16_t size_comment;          /* size of the global comment of the zipfile */
+} unz_global_info64;
+
+typedef struct unz_global_info_s
+{
+    uint32_t number_entry;          /* total number of entries in the central dir on this disk */
+    uint32_t number_disk_with_CD;   /* number the the disk with central dir, used for spanning ZIP*/
+    uint16_t size_comment;          /* size of the global comment of the zipfile */
+} unz_global_info;
+
+/* unz_file_info contain information about a file in the zipfile */
+/* https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT */
+typedef struct unz_file_info64_s
+{
+    uint16_t version;               /* version made by                 2 bytes */
+    uint16_t version_needed;        /* version needed to extract       2 bytes */
+    uint16_t flag;                  /* general purpose bit flag        2 bytes */
+    uint16_t compression_method;    /* compression method              2 bytes */
+    uint32_t dos_date;              /* last mod file date in Dos fmt   4 bytes */
+    uint32_t crc;                   /* crc-32                          4 bytes */
+    uint64_t compressed_size;       /* compressed size                 8 bytes */
+    uint64_t uncompressed_size;     /* uncompressed size               8 bytes */
+    uint16_t size_filename;         /* filename length                 2 bytes */
+    uint16_t size_file_extra;       /* extra field length              2 bytes */
+    uint16_t size_file_comment;     /* file comment length             2 bytes */
+
+    uint32_t disk_num_start;        /* disk number start               4 bytes */
+    uint16_t internal_fa;           /* internal file attributes        2 bytes */
+    uint32_t external_fa;           /* external file attributes        4 bytes */
+
+    uint64_t disk_offset;
+
+    uint16_t size_file_extra_internal;
+} unz_file_info64;
+
+typedef struct unz_file_info_s
+{
+    uint16_t version;               /* version made by                 2 bytes */
+    uint16_t version_needed;        /* version needed to extract       2 bytes */
+    uint16_t flag;                  /* general purpose bit flag        2 bytes */
+    uint16_t compression_method;    /* compression method              2 bytes */
+    uint32_t dos_date;              /* last mod file date in Dos fmt   4 bytes */
+    uint32_t crc;                   /* crc-32                          4 bytes */
+    uint32_t compressed_size;       /* compressed size                 4 bytes */
+    uint32_t uncompressed_size;     /* uncompressed size               4 bytes */
+    uint16_t size_filename;         /* filename length                 2 bytes */
+    uint16_t size_file_extra;       /* extra field length              2 bytes */
+    uint16_t size_file_comment;     /* file comment length             2 bytes */
+
+    uint16_t disk_num_start;        /* disk number start               2 bytes */
+    uint16_t internal_fa;           /* internal file attributes        2 bytes */
+    uint32_t external_fa;           /* external file attributes        4 bytes */
+
+    uint64_t disk_offset;
+} unz_file_info;
+
+/***************************************************************************/
+/* Opening and close a zip file */
+
+extern unzFile ZEXPORT unzOpen(const char *path);
+extern unzFile ZEXPORT unzOpen64(const void *path);
+/* Open a Zip file.
+
+   path should contain the full path (by example, on a Windows XP computer
+      "c:\\zlib\\zlib113.zip" or on an Unix computer "zlib/zlib113.zip".
+   return NULL if zipfile cannot be opened or doesn't exist
+   return unzFile handle if no error
+
+   NOTE: The "64" function take a const void *pointer, because  the path is just the value passed to the
+   open64_file_func callback. Under Windows, if UNICODE is defined, using fill_fopen64_filefunc, the path
+   is a pointer to a wide unicode string  (LPCTSTR is LPCWSTR), so const char *does not describe the reality */
+
+extern unzFile ZEXPORT unzOpen2(const char *path, zlib_filefunc_def *pzlib_filefunc_def);
+/* Open a Zip file, like unzOpen, but provide a set of file low level API for read/write operations */
+extern unzFile ZEXPORT unzOpen2_64(const void *path, zlib_filefunc64_def *pzlib_filefunc_def);
+/* Open a Zip file, like unz64Open, but provide a set of file low level API for read/write 64-bit operations */
+
+extern int ZEXPORT unzClose(unzFile file);
+/* Close a ZipFile opened with unzOpen. If there is files inside the .Zip opened with unzOpenCurrentFile,
+   these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
+
+   return UNZ_OK if there is no error */
+
+extern int ZEXPORT unzGetGlobalInfo(unzFile file, unz_global_info *pglobal_info);
+extern int ZEXPORT unzGetGlobalInfo64(unzFile file, unz_global_info64 *pglobal_info);
+/* Write info about the ZipFile in the *pglobal_info structure.
+
+   return UNZ_OK if no error */
+
+extern int ZEXPORT unzGetGlobalComment(unzFile file, char *comment, uint16_t comment_size);
+/* Get the global comment string of the ZipFile, in the comment buffer.
+
+   uSizeBuf is the size of the szComment buffer.
+   return the number of byte copied or an error code <0 */
+
+extern uint64_t ZEXPORT unzCountEntries(const unzFile file);
+
+/***************************************************************************/
+/* Reading the content of the current zipfile, you can open it, read data from it, and close it
+   (you can close it before reading all the file) */
+
+extern int ZEXPORT unzOpenCurrentFile(unzFile file);
+/* Open for reading data the current file in the zipfile.
+
+   return UNZ_OK if no error */
+
+extern int ZEXPORT unzOpenCurrentFilePassword(unzFile file, const char *password);
+/* Open for reading data the current file in the zipfile.
+   password is a crypting password
+
+   return UNZ_OK if no error */
+
+extern int ZEXPORT unzOpenCurrentFile2(unzFile file, int *method, int *level, int raw);
+/* Same as unzOpenCurrentFile, but open for read raw the file (not uncompress)
+   if raw==1 *method will receive method of compression, *level will receive level of compression
+
+   NOTE: you can set level parameter as NULL (if you did not want known level,
+         but you CANNOT set method parameter as NULL */
+
+extern int ZEXPORT unzOpenCurrentFile3(unzFile file, int *method, int *level, int raw, const char *password);
+/* Same as unzOpenCurrentFile, but takes extra parameter password for encrypted files */
+
+extern int ZEXPORT unzReadCurrentFile(unzFile file, voidp buf, uint32_t len);
+/* Read bytes from the current file (opened by unzOpenCurrentFile)
+   buf contain buffer where data must be copied
+   len the size of buf.
+
+   return the number of byte copied if somes bytes are copied
+   return 0 if the end of file was reached
+   return <0 with error code if there is an error (UNZ_ERRNO for IO error, or zLib error for uncompress error) */
+
+extern int ZEXPORT unzGetCurrentFileInfo(unzFile file, unz_file_info *pfile_info, char *filename,
+    uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size);
+extern int ZEXPORT unzGetCurrentFileInfo64(unzFile file, unz_file_info64 *pfile_info, char *filename,
+    uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size);
+/* Get Info about the current file
+
+   pfile_info if != NULL, the *pfile_info structure will contain somes info about the current file
+   filename if != NULL, the file name string will be copied in filename
+   filename_size is the size of the filename buffer
+   extrafield if != NULL, the extra field information from the central header will be copied in to
+   extrafield_size is the size of the extraField buffer
+   comment if != NULL, the comment string of the file will be copied in to
+   comment_size is the size of the comment buffer */
+
+extern int ZEXPORT unzGetLocalExtrafield(unzFile file, voidp buf, uint32_t len);
+/* Read extra field from the current file (opened by unzOpenCurrentFile)
+   This is the local-header version of the extra field (sometimes, there is
+   more info in the local-header version than in the central-header)
+
+   if buf == NULL, it return the size of the local extra field
+   if buf != NULL, len is the size of the buffer, the extra header is copied in buf.
+
+   return number of bytes copied in buf, or (if <0) the error code */
+
+extern int ZEXPORT unzCloseCurrentFile(unzFile file);
+/* Close the file in zip opened with unzOpenCurrentFile
+
+   return UNZ_CRCERROR if all the file was read but the CRC is not good */
+
+/***************************************************************************/
+/* Browse the directory of the zipfile */
+
+typedef int (*unzFileNameComparer)(unzFile file, const char *filename1, const char *filename2);
+typedef int (*unzIteratorFunction)(unzFile file);
+typedef int (*unzIteratorFunction2)(unzFile file, unz_file_info64 *pfile_info, char *filename,
+    uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size);
+
+extern int ZEXPORT unzGoToFirstFile(unzFile file);
+/* Set the current file of the zipfile to the first file.
+
+   return UNZ_OK if no error */
+
+extern int ZEXPORT unzGoToFirstFile2(unzFile file, unz_file_info64 *pfile_info, char *filename,
+    uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size);
+/* Set the current file of the zipfile to the first file and retrieves the current info on success.
+   Not as seek intensive as unzGoToFirstFile + unzGetCurrentFileInfo.
+
+   return UNZ_OK if no error */
+
+extern int ZEXPORT unzGoToNextFile(unzFile file);
+/* Set the current file of the zipfile to the next file.
+
+   return UNZ_OK if no error
+   return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest */
+
+extern int ZEXPORT unzGoToNextFile2(unzFile file, unz_file_info64 *pfile_info, char *filename,
+    uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size);
+/* Set the current file of the zipfile to the next file and retrieves the current
+   info on success. Does less seeking around than unzGotoNextFile + unzGetCurrentFileInfo.
+
+   return UNZ_OK if no error
+   return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest */
+
+extern int ZEXPORT unzLocateFile(unzFile file, const char *filename, unzFileNameComparer filename_compare_func);
+/* Try locate the file szFileName in the zipfile. For custom filename comparison pass in comparison function.
+
+   return UNZ_OK if the file is found (it becomes the current file)
+   return UNZ_END_OF_LIST_OF_FILE if the file is not found */
+
+/***************************************************************************/
+/* Raw access to zip file */
+
+typedef struct unz_file_pos_s
+{
+    uint32_t pos_in_zip_directory;  /* offset in zip file directory */
+    uint32_t num_of_file;           /* # of file */
+} unz_file_pos;
+
+extern int ZEXPORT unzGetFilePos(unzFile file, unz_file_pos *file_pos);
+extern int ZEXPORT unzGoToFilePos(unzFile file, unz_file_pos *file_pos);
+
+typedef struct unz64_file_pos_s
+{
+    uint64_t pos_in_zip_directory;   /* offset in zip file directory */
+    uint64_t num_of_file;            /* # of file */
+} unz64_file_pos;
+
+extern int ZEXPORT unzGetFilePos64(unzFile file, unz64_file_pos *file_pos);
+extern int ZEXPORT unzGoToFilePos64(unzFile file, const unz64_file_pos *file_pos);
+
+extern int32_t ZEXPORT unzGetOffset(unzFile file);
+extern int64_t ZEXPORT unzGetOffset64(unzFile file);
+/* Get the current file offset */
+
+extern int ZEXPORT unzSetOffset(unzFile file, uint32_t pos);
+extern int ZEXPORT unzSetOffset64(unzFile file, uint64_t pos);
+/* Set the current file offset */
+
+extern int32_t ZEXPORT unzTell(unzFile file);
+extern int64_t ZEXPORT unzTell64(unzFile file);
+/* return current position in uncompressed data */
+
+extern int ZEXPORT unzSeek(unzFile file, uint32_t offset, int origin);
+extern int ZEXPORT unzSeek64(unzFile file, uint64_t offset, int origin);
+/* Seek within the uncompressed data if compression method is storage */
+
+extern int ZEXPORT unzEndOfFile(unzFile file);
+/* return 1 if the end of file was reached, 0 elsewhere */
+
+/***************************************************************************/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _UNZ_H */