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mz_compat.c
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/* mz_compat.c -- Backwards compatible interface for older versions
part of the minizip-ng project
Copyright (C) Nathan Moinvaziri
https://github.com/zlib-ng/minizip-ng
Copyright (C) 1998-2010 Gilles Vollant
https://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 "mz.h"
#include "mz_os.h"
#include "mz_strm.h"
#include "mz_strm_mem.h"
#include "mz_strm_os.h"
#include "mz_strm_zlib.h"
#include "mz_zip.h"
#include <stdio.h> /* SEEK */
#include "mz_compat.h"
/***************************************************************************/
typedef struct mz_compat_s {
void *stream;
void *handle;
uint64_t entry_index;
int64_t entry_pos;
int64_t total_out;
} mz_compat;
/***************************************************************************/
typedef struct mz_stream_ioapi_s {
mz_stream stream;
void *handle;
zlib_filefunc_def filefunc;
zlib_filefunc64_def filefunc64;
} mz_stream_ioapi;
/***************************************************************************/
static int32_t mz_stream_ioapi_open(void *stream, const char *path, int32_t mode);
static int32_t mz_stream_ioapi_is_open(void *stream);
static int32_t mz_stream_ioapi_read(void *stream, void *buf, int32_t size);
static int32_t mz_stream_ioapi_write(void *stream, const void *buf, int32_t size);
static int64_t mz_stream_ioapi_tell(void *stream);
static int32_t mz_stream_ioapi_seek(void *stream, int64_t offset, int32_t origin);
static int32_t mz_stream_ioapi_close(void *stream);
static int32_t mz_stream_ioapi_error(void *stream);
static void *mz_stream_ioapi_create(void);
static void mz_stream_ioapi_delete(void **stream);
/***************************************************************************/
static mz_stream_vtbl mz_stream_ioapi_vtbl = {
mz_stream_ioapi_open,
mz_stream_ioapi_is_open,
mz_stream_ioapi_read,
mz_stream_ioapi_write,
mz_stream_ioapi_tell,
mz_stream_ioapi_seek,
mz_stream_ioapi_close,
mz_stream_ioapi_error,
mz_stream_ioapi_create,
mz_stream_ioapi_delete,
NULL,
NULL
};
/***************************************************************************/
static int32_t mz_stream_ioapi_open(void *stream, const char *path, int32_t mode) {
mz_stream_ioapi *ioapi = (mz_stream_ioapi *)stream;
int32_t ioapi_mode = 0;
if ((mode & MZ_OPEN_MODE_READWRITE) == MZ_OPEN_MODE_READ)
ioapi_mode = ZLIB_FILEFUNC_MODE_READ;
else if (mode & MZ_OPEN_MODE_APPEND)
ioapi_mode = ZLIB_FILEFUNC_MODE_EXISTING;
else if (mode & MZ_OPEN_MODE_CREATE)
ioapi_mode = ZLIB_FILEFUNC_MODE_CREATE;
else
return MZ_OPEN_ERROR;
if (ioapi->filefunc64.zopen64_file)
ioapi->handle = ioapi->filefunc64.zopen64_file(ioapi->filefunc64.opaque, path, ioapi_mode);
else if (ioapi->filefunc.zopen_file)
ioapi->handle = ioapi->filefunc.zopen_file(ioapi->filefunc.opaque, path, ioapi_mode);
if (!ioapi->handle)
return MZ_PARAM_ERROR;
return MZ_OK;
}
static int32_t mz_stream_ioapi_is_open(void *stream) {
mz_stream_ioapi *ioapi = (mz_stream_ioapi *)stream;
if (!ioapi->handle)
return MZ_OPEN_ERROR;
return MZ_OK;
}
static int32_t mz_stream_ioapi_read(void *stream, void *buf, int32_t size) {
mz_stream_ioapi *ioapi = (mz_stream_ioapi *)stream;
read_file_func zread = NULL;
void *opaque = NULL;
if (mz_stream_ioapi_is_open(stream) != MZ_OK)
return MZ_OPEN_ERROR;
if (ioapi->filefunc64.zread_file) {
zread = ioapi->filefunc64.zread_file;
opaque = ioapi->filefunc64.opaque;
} else if (ioapi->filefunc.zread_file) {
zread = ioapi->filefunc.zread_file;
opaque = ioapi->filefunc.opaque;
} else
return MZ_PARAM_ERROR;
return zread(opaque, ioapi->handle, buf, size);
}
static int32_t mz_stream_ioapi_write(void *stream, const void *buf, int32_t size) {
mz_stream_ioapi *ioapi = (mz_stream_ioapi *)stream;
write_file_func zwrite = NULL;
int32_t written = 0;
void *opaque = NULL;
if (mz_stream_ioapi_is_open(stream) != MZ_OK)
return MZ_OPEN_ERROR;
if (ioapi->filefunc64.zwrite_file) {
zwrite = ioapi->filefunc64.zwrite_file;
opaque = ioapi->filefunc64.opaque;
} else if (ioapi->filefunc.zwrite_file) {
zwrite = ioapi->filefunc.zwrite_file;
opaque = ioapi->filefunc.opaque;
} else
return MZ_PARAM_ERROR;
written = zwrite(opaque, ioapi->handle, buf, size);
return written;
}
static int64_t mz_stream_ioapi_tell(void *stream) {
mz_stream_ioapi *ioapi = (mz_stream_ioapi *)stream;
if (mz_stream_ioapi_is_open(stream) != MZ_OK)
return MZ_OPEN_ERROR;
if (ioapi->filefunc64.ztell64_file)
return ioapi->filefunc64.ztell64_file(ioapi->filefunc64.opaque, ioapi->handle);
else if (ioapi->filefunc.ztell_file)
return ioapi->filefunc.ztell_file(ioapi->filefunc.opaque, ioapi->handle);
return MZ_INTERNAL_ERROR;
}
static int32_t mz_stream_ioapi_seek(void *stream, int64_t offset, int32_t origin) {
mz_stream_ioapi *ioapi = (mz_stream_ioapi *)stream;
if (mz_stream_ioapi_is_open(stream) != MZ_OK)
return MZ_OPEN_ERROR;
if (ioapi->filefunc64.zseek64_file) {
if (ioapi->filefunc64.zseek64_file(ioapi->filefunc64.opaque, ioapi->handle, offset, origin) != 0)
return MZ_INTERNAL_ERROR;
} else if (ioapi->filefunc.zseek_file) {
if (ioapi->filefunc.zseek_file(ioapi->filefunc.opaque, ioapi->handle, (int32_t)offset, origin) != 0)
return MZ_INTERNAL_ERROR;
} else
return MZ_PARAM_ERROR;
return MZ_OK;
}
static int32_t mz_stream_ioapi_close(void *stream) {
mz_stream_ioapi *ioapi = (mz_stream_ioapi *)stream;
close_file_func zclose = NULL;
void *opaque = NULL;
if (mz_stream_ioapi_is_open(stream) != MZ_OK)
return MZ_OPEN_ERROR;
if (ioapi->filefunc.zclose_file) {
zclose = ioapi->filefunc.zclose_file;
opaque = ioapi->filefunc.opaque;
} else if (ioapi->filefunc64.zclose_file) {
zclose = ioapi->filefunc64.zclose_file;
opaque = ioapi->filefunc64.opaque;
} else
return MZ_PARAM_ERROR;
if (zclose(opaque, ioapi->handle) != 0)
return MZ_CLOSE_ERROR;
ioapi->handle = NULL;
return MZ_OK;
}
static int32_t mz_stream_ioapi_error(void *stream) {
mz_stream_ioapi *ioapi = (mz_stream_ioapi *)stream;
testerror_file_func zerror = NULL;
void *opaque = NULL;
if (mz_stream_ioapi_is_open(stream) != MZ_OK)
return MZ_OPEN_ERROR;
if (ioapi->filefunc.zerror_file) {
zerror = ioapi->filefunc.zerror_file;
opaque = ioapi->filefunc.opaque;
} else if (ioapi->filefunc64.zerror_file) {
zerror = ioapi->filefunc64.zerror_file;
opaque = ioapi->filefunc64.opaque;
} else
return MZ_PARAM_ERROR;
return zerror(opaque, ioapi->handle);
}
static int32_t mz_stream_ioapi_set_filefunc(void *stream, zlib_filefunc_def *filefunc) {
mz_stream_ioapi *ioapi = (mz_stream_ioapi *)stream;
memcpy(&ioapi->filefunc, filefunc, sizeof(zlib_filefunc_def));
return MZ_OK;
}
static int32_t mz_stream_ioapi_set_filefunc64(void *stream, zlib_filefunc64_def *filefunc) {
mz_stream_ioapi *ioapi = (mz_stream_ioapi *)stream;
memcpy(&ioapi->filefunc64, filefunc, sizeof(zlib_filefunc64_def));
return MZ_OK;
}
static void *mz_stream_ioapi_create(void) {
mz_stream_ioapi *ioapi = (mz_stream_ioapi *)calloc(1, sizeof(mz_stream_ioapi));
if (ioapi)
ioapi->stream.vtbl = &mz_stream_ioapi_vtbl;
return ioapi;
}
static void mz_stream_ioapi_delete(void **stream) {
mz_stream_ioapi *ioapi = NULL;
if (!stream)
return;
ioapi = (mz_stream_ioapi *)*stream;
if (ioapi)
free(ioapi);
*stream = NULL;
}
/***************************************************************************/
void fill_fopen_filefunc(zlib_filefunc_def *pzlib_filefunc_def) {
/* For 32-bit file support only, compile with MZ_FILE32_API */
if (pzlib_filefunc_def)
memset(pzlib_filefunc_def, 0, sizeof(zlib_filefunc_def));
}
void fill_fopen64_filefunc(zlib_filefunc64_def *pzlib_filefunc_def) {
/* All mz_stream_os_* support large files if compilation supports it */
if (pzlib_filefunc_def)
memset(pzlib_filefunc_def, 0, sizeof(zlib_filefunc64_def));
}
void fill_win32_filefunc(zlib_filefunc_def *pzlib_filefunc_def) {
/* Handled by mz_stream_os_win32 */
if (pzlib_filefunc_def)
memset(pzlib_filefunc_def, 0, sizeof(zlib_filefunc_def));
}
void fill_win32_filefunc64(zlib_filefunc64_def *pzlib_filefunc_def) {
/* Automatically supported in mz_stream_os_win32 */
if (pzlib_filefunc_def)
memset(pzlib_filefunc_def, 0, sizeof(zlib_filefunc64_def));
}
void fill_win32_filefunc64A(zlib_filefunc64_def *pzlib_filefunc_def) {
/* Automatically supported in mz_stream_os_win32 */
if (pzlib_filefunc_def)
memset(pzlib_filefunc_def, 0, sizeof(zlib_filefunc64_def));
}
/* NOTE: fill_win32_filefunc64W is no longer necessary since wide-character
support is automatically handled by the underlying os stream. Do not
pass wide-characters to zipOpen or unzOpen. */
void fill_memory_filefunc(zlib_filefunc_def *pzlib_filefunc_def) {
/* Use opaque to indicate which stream interface to create */
if (pzlib_filefunc_def) {
memset(pzlib_filefunc_def, 0, sizeof(zlib_filefunc_def));
pzlib_filefunc_def->opaque = mz_stream_mem_get_interface();
}
}
/***************************************************************************/
static int32_t zipConvertAppendToStreamMode(int append) {
int32_t mode = MZ_OPEN_MODE_WRITE;
switch (append) {
case APPEND_STATUS_CREATE:
mode |= MZ_OPEN_MODE_CREATE;
break;
case APPEND_STATUS_CREATEAFTER:
mode |= MZ_OPEN_MODE_CREATE | MZ_OPEN_MODE_APPEND;
break;
case APPEND_STATUS_ADDINZIP:
mode |= MZ_OPEN_MODE_READ | MZ_OPEN_MODE_APPEND;
break;
}
return mode;
}
zipFile zipOpen(const char *path, int append) {
return zipOpen2(path, append, NULL, NULL);
}
zipFile zipOpen64(const void *path, int append) {
return zipOpen2(path, append, NULL, NULL);
}
zipFile zipOpen2(const char *path, int append, const char **globalcomment,
zlib_filefunc_def *pzlib_filefunc_def) {
zipFile zip = NULL;
int32_t mode = zipConvertAppendToStreamMode(append);
void *stream = NULL;
if (pzlib_filefunc_def) {
if (pzlib_filefunc_def->zopen_file) {
stream = mz_stream_ioapi_create();
if (!stream)
return NULL;
mz_stream_ioapi_set_filefunc(stream, pzlib_filefunc_def);
} else if (pzlib_filefunc_def->opaque) {
stream = mz_stream_create((mz_stream_vtbl *)pzlib_filefunc_def->opaque);
if (!stream)
return NULL;
}
}
if (!stream) {
stream = mz_stream_os_create();
if (!stream)
return NULL;
}
if (mz_stream_open(stream, path, mode) != MZ_OK) {
mz_stream_delete(&stream);
return NULL;
}
zip = zipOpen_MZ(stream, append, globalcomment);
if (!zip) {
mz_stream_delete(&stream);
return NULL;
}
return zip;
}
zipFile zipOpen2_64(const void *path, int append, const char **globalcomment,
zlib_filefunc64_def *pzlib_filefunc_def) {
zipFile zip = NULL;
int32_t mode = zipConvertAppendToStreamMode(append);
void *stream = NULL;
if (pzlib_filefunc_def) {
if (pzlib_filefunc_def->zopen64_file) {
stream = mz_stream_ioapi_create();
if (!stream)
return NULL;
mz_stream_ioapi_set_filefunc64(stream, pzlib_filefunc_def);
} else if (pzlib_filefunc_def->opaque) {
stream = mz_stream_create((mz_stream_vtbl *)pzlib_filefunc_def->opaque);
if (!stream)
return NULL;
}
}
if (!stream) {
stream = mz_stream_os_create();
if (!stream)
return NULL;
}
if (mz_stream_open(stream, path, mode) != MZ_OK) {
mz_stream_delete(&stream);
return NULL;
}
zip = zipOpen_MZ(stream, append, globalcomment);
if (!zip) {
mz_stream_delete(&stream);
return NULL;
}
return zip;
}
zipFile zipOpen_MZ(void *stream, int append, const char **globalcomment) {
mz_compat *compat = NULL;
int32_t err = MZ_OK;
int32_t mode = zipConvertAppendToStreamMode(append);
void *handle = NULL;
handle = mz_zip_create();
if (!handle)
return NULL;
err = mz_zip_open(handle, stream, mode);
if (err != MZ_OK) {
mz_zip_delete(&handle);
return NULL;
}
if (globalcomment)
mz_zip_get_comment(handle, globalcomment);
compat = (mz_compat *)calloc(1, sizeof(mz_compat));
if (compat) {
compat->handle = handle;
compat->stream = stream;
} else {
mz_zip_delete(&handle);
}
return (zipFile)compat;
}
void* zipGetHandle_MZ(zipFile file) {
mz_compat *compat = (mz_compat *)file;
if (!compat)
return NULL;
return compat->handle;
}
void* zipGetStream_MZ(zipFile file) {
mz_compat *compat = (mz_compat *)file;
if (!compat)
return NULL;
return (void *)compat->stream;
}
int zipOpenNewFileInZip5(zipFile file, const char *filename, const zip_fileinfo *zipfi,
const void *extrafield_local, uint16_t size_extrafield_local, const void *extrafield_global,
uint16_t size_extrafield_global, const char *comment, int compression_method, int level,
int raw, int windowBits, int memLevel, int strategy, const char *password,
unsigned long crc_for_crypting, unsigned long version_madeby, unsigned long flag_base, int zip64) {
mz_compat *compat = (mz_compat *)file;
mz_zip_file file_info;
MZ_UNUSED(strategy);
MZ_UNUSED(memLevel);
MZ_UNUSED(windowBits);
MZ_UNUSED(size_extrafield_local);
MZ_UNUSED(extrafield_local);
MZ_UNUSED(crc_for_crypting);
if (!compat)
return ZIP_PARAMERROR;
memset(&file_info, 0, sizeof(file_info));
if (zipfi) {
uint64_t dos_date = 0;
if (zipfi->mz_dos_date != 0)
dos_date = zipfi->mz_dos_date;
else
dos_date = mz_zip_tm_to_dosdate(&zipfi->tmz_date);
file_info.modified_date = mz_zip_dosdate_to_time_t(dos_date);
file_info.external_fa = zipfi->external_fa;
file_info.internal_fa = zipfi->internal_fa;
}
if (!filename)
filename = "-";
file_info.compression_method = (uint16_t)compression_method;
file_info.filename = filename;
/* file_info.extrafield_local = extrafield_local; */
/* file_info.extrafield_local_size = size_extrafield_local; */
file_info.extrafield = extrafield_global;
file_info.extrafield_size = size_extrafield_global;
file_info.version_madeby = (uint16_t)version_madeby;
file_info.comment = comment;
if (file_info.comment)
file_info.comment_size = (uint16_t)strlen(file_info.comment);
file_info.flag = (uint16_t)flag_base;
if (zip64)
file_info.zip64 = MZ_ZIP64_FORCE;
else
file_info.zip64 = MZ_ZIP64_DISABLE;
#ifdef HAVE_WZAES
if (password || (raw && (file_info.flag & MZ_ZIP_FLAG_ENCRYPTED)))
file_info.aes_version = MZ_AES_VERSION;
#endif
return mz_zip_entry_write_open(compat->handle, &file_info, (int16_t)level, (uint8_t)raw, password);
}
int zipOpenNewFileInZip4_64(zipFile file, const char *filename, const zip_fileinfo *zipfi,
const void *extrafield_local, uint16_t size_extrafield_local, const void *extrafield_global,
uint16_t size_extrafield_global, const char *comment, int compression_method, int level,
int raw, int windowBits, int memLevel, int strategy, const char *password,
unsigned long crc_for_crypting, unsigned long version_madeby, unsigned long flag_base, int zip64) {
return zipOpenNewFileInZip5(file, filename, zipfi, extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global, comment, compression_method, level, raw, windowBits,
memLevel, strategy, password, crc_for_crypting, version_madeby, flag_base, zip64);
}
int zipOpenNewFileInZip4(zipFile file, const char *filename, const zip_fileinfo *zipfi,
const void *extrafield_local, uint16_t size_extrafield_local, const void *extrafield_global,
uint16_t size_extrafield_global, const char *comment, int compression_method, int level,
int raw, int windowBits, int memLevel, int strategy, const char *password,
unsigned long crc_for_crypting, unsigned long version_madeby, unsigned long flag_base) {
return zipOpenNewFileInZip4_64(file, filename, zipfi, extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global, comment, compression_method, level, raw, windowBits,
memLevel, strategy, password, crc_for_crypting, version_madeby, flag_base, 0);
}
int zipOpenNewFileInZip3(zipFile file, const char *filename, const zip_fileinfo *zipfi,
const void *extrafield_local, uint16_t size_extrafield_local, const void *extrafield_global,
uint16_t size_extrafield_global, const char *comment, int compression_method, int level,
int raw, int windowBits, int memLevel, int strategy, const char *password,
unsigned long crc_for_crypting) {
return zipOpenNewFileInZip3_64(file, filename, zipfi, extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global, comment, compression_method, level, raw, windowBits,
memLevel, strategy, password, crc_for_crypting, 0);
}
int zipOpenNewFileInZip3_64(zipFile file, const char *filename, const zip_fileinfo *zipfi,
const void *extrafield_local, uint16_t size_extrafield_local, const void *extrafield_global,
uint16_t size_extrafield_global, const char *comment, int compression_method, int level,
int raw, int windowBits, int memLevel, int strategy, const char *password,
uint32_t crc_for_crypting, int zip64) {
return zipOpenNewFileInZip4_64(file, filename, zipfi, extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global, comment, compression_method, level, raw, windowBits,
memLevel, strategy, password, crc_for_crypting, MZ_VERSION_MADEBY, 0, zip64);
}
int zipOpenNewFileInZip2(zipFile file, const char *filename, const zip_fileinfo *zipfi,
const void *extrafield_local, uint16_t size_extrafield_local, const void *extrafield_global,
uint16_t size_extrafield_global, const char *comment, int compression_method, int level,
int raw) {
return zipOpenNewFileInZip3_64(file, filename, zipfi, extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global, comment, compression_method, level, raw,
0, 0, 0, NULL, 0, 0);
}
int zipOpenNewFileInZip2_64(zipFile file, const char *filename, const zip_fileinfo *zipfi,
const void *extrafield_local, uint16_t size_extrafield_local, const void *extrafield_global,
uint16_t size_extrafield_global, const char *comment, int compression_method, int level,
int raw, int zip64) {
return zipOpenNewFileInZip3_64(file, filename, zipfi, extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global, comment, compression_method, level, raw, 0,
0, 0, NULL, 0, zip64);
}
int zipOpenNewFileInZip(zipFile file, const char *filename, const zip_fileinfo *zipfi,
const void *extrafield_local, uint16_t size_extrafield_local, const void *extrafield_global,
uint16_t size_extrafield_global, const char *comment, int compression_method, int level) {
return zipOpenNewFileInZip_64(file, filename, zipfi, extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global, comment, compression_method, level, 0);
}
int zipOpenNewFileInZip_64(zipFile file, const char *filename, const zip_fileinfo *zipfi,
const void *extrafield_local, uint16_t size_extrafield_local, const void *extrafield_global,
uint16_t size_extrafield_global, const char *comment, int compression_method, int level,
int zip64) {
return zipOpenNewFileInZip2_64(file, filename, zipfi, extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global, comment, compression_method, level, 0, zip64);
}
int zipWriteInFileInZip(zipFile file, const void *buf, uint32_t len) {
mz_compat *compat = (mz_compat *)file;
int32_t written = 0;
if (!compat || len >= INT32_MAX)
return ZIP_PARAMERROR;
written = mz_zip_entry_write(compat->handle, buf, (int32_t)len);
if ((written < 0) || ((uint32_t)written != len))
return ZIP_ERRNO;
return ZIP_OK;
}
int zipCloseFileInZipRaw(zipFile file, unsigned long uncompressed_size, unsigned long crc32) {
return zipCloseFileInZipRaw64(file, uncompressed_size, crc32);
}
int zipCloseFileInZipRaw64(zipFile file, uint64_t uncompressed_size, unsigned long crc32) {
mz_compat *compat = (mz_compat *)file;
if (!compat)
return ZIP_PARAMERROR;
return mz_zip_entry_close_raw(compat->handle, (int64_t)uncompressed_size, crc32);
}
int zipCloseFileInZip(zipFile file) {
return zipCloseFileInZip64(file);
}
int zipCloseFileInZip64(zipFile file) {
mz_compat *compat = (mz_compat *)file;
if (!compat)
return ZIP_PARAMERROR;
return mz_zip_entry_close(compat->handle);
}
int zipClose(zipFile file, const char *global_comment) {
return zipClose_64(file, global_comment);
}
int zipClose_64(zipFile file, const char *global_comment) {
return zipClose2_64(file, global_comment, MZ_VERSION_MADEBY);
}
int zipClose2_64(zipFile file, const char *global_comment, uint16_t version_madeby) {
mz_compat *compat = (mz_compat *)file;
int32_t err = MZ_OK;
if (compat->handle)
err = zipClose2_MZ(file, global_comment, version_madeby);
if (compat->stream) {
mz_stream_close(compat->stream);
mz_stream_delete(&compat->stream);
}
free(compat);
return err;
}
/* Only closes the zip handle, does not close the stream */
int zipClose_MZ(zipFile file, const char *global_comment) {
return zipClose2_MZ(file, global_comment, MZ_VERSION_MADEBY);
}
/* Only closes the zip handle, does not close the stream */
int zipClose2_MZ(zipFile file, const char *global_comment, uint16_t version_madeby) {
mz_compat *compat = (mz_compat *)file;
int32_t err = MZ_OK;
if (!compat)
return ZIP_PARAMERROR;
if (!compat->handle)
return err;
if (global_comment)
mz_zip_set_comment(compat->handle, global_comment);
mz_zip_set_version_madeby(compat->handle, version_madeby);
err = mz_zip_close(compat->handle);
mz_zip_delete(&compat->handle);
return err;
}
/***************************************************************************/
unzFile unzOpen(const char *path) {
return unzOpen64(path);
}
unzFile unzOpen64(const void *path) {
return unzOpen2(path, NULL);
}
unzFile unzOpen2(const char *path, zlib_filefunc_def *pzlib_filefunc_def) {
unzFile unz = NULL;
void *stream = NULL;
if (pzlib_filefunc_def) {
if (pzlib_filefunc_def->zopen_file) {
stream = mz_stream_ioapi_create();
if (!stream)
return NULL;
mz_stream_ioapi_set_filefunc(stream, pzlib_filefunc_def);
} else if (pzlib_filefunc_def->opaque) {
stream = mz_stream_create((mz_stream_vtbl *)pzlib_filefunc_def->opaque);
if (!stream)
return NULL;
}
}
if (!stream) {
stream = mz_stream_os_create();
if (!stream)
return NULL;
}
if (mz_stream_open(stream, path, MZ_OPEN_MODE_READ) != MZ_OK) {
mz_stream_delete(&stream);
return NULL;
}
unz = unzOpen_MZ(stream);
if (!unz) {
mz_stream_close(stream);
mz_stream_delete(&stream);
return NULL;
}
return unz;
}
unzFile unzOpen2_64(const void *path, zlib_filefunc64_def *pzlib_filefunc_def) {
unzFile unz = NULL;
void *stream = NULL;
if (pzlib_filefunc_def) {
if (pzlib_filefunc_def->zopen64_file) {
stream = mz_stream_ioapi_create();
if (!stream)
return NULL;
mz_stream_ioapi_set_filefunc64(stream, pzlib_filefunc_def);
} else if (pzlib_filefunc_def->opaque) {
stream = mz_stream_create((mz_stream_vtbl *)pzlib_filefunc_def->opaque);
if (!stream)
return NULL;
}
}
if (!stream) {
stream = mz_stream_os_create();
if (!stream)
return NULL;
}
if (mz_stream_open(stream, path, MZ_OPEN_MODE_READ) != MZ_OK) {
mz_stream_delete(&stream);
return NULL;
}
unz = unzOpen_MZ(stream);
if (!unz) {
mz_stream_close(stream);
mz_stream_delete(&stream);
return NULL;
}
return unz;
}
void* unzGetHandle_MZ(unzFile file) {
mz_compat *compat = (mz_compat *)file;
if (!compat)
return NULL;
return compat->handle;
}
void* unzGetStream_MZ(unzFile file) {
mz_compat *compat = (mz_compat *)file;
if (!compat)
return NULL;
return compat->stream;
}
unzFile unzOpen_MZ(void *stream) {
mz_compat *compat = NULL;
int32_t err = MZ_OK;
void *handle = NULL;
handle = mz_zip_create();
if (!handle)
return NULL;
err = mz_zip_open(handle, stream, MZ_OPEN_MODE_READ);
if (err != MZ_OK) {
mz_zip_delete(&handle);
return NULL;
}
compat = (mz_compat *)calloc(1, sizeof(mz_compat));
if (compat) {
compat->handle = handle;
compat->stream = stream;
mz_zip_goto_first_entry(compat->handle);
} else {
mz_zip_delete(&handle);
}
return (unzFile)compat;
}
int unzClose(unzFile file) {
mz_compat *compat = (mz_compat *)file;
int32_t err = MZ_OK;
if (!compat)
return UNZ_PARAMERROR;
if (compat->handle)
err = unzClose_MZ(file);
if (compat->stream) {
mz_stream_close(compat->stream);
mz_stream_delete(&compat->stream);
}
free(compat);
return err;
}
/* Only closes the zip handle, does not close the stream */
int unzClose_MZ(unzFile file) {
mz_compat *compat = (mz_compat *)file;
int32_t err = MZ_OK;
if (!compat)
return UNZ_PARAMERROR;
err = mz_zip_close(compat->handle);
mz_zip_delete(&compat->handle);
return err;
}
int unzGetGlobalInfo(unzFile file, unz_global_info* pglobal_info32) {
mz_compat *compat = (mz_compat *)file;
unz_global_info64 global_info64;
int32_t err = MZ_OK;
memset(pglobal_info32, 0, sizeof(unz_global_info));
if (!compat)
return UNZ_PARAMERROR;
err = unzGetGlobalInfo64(file, &global_info64);
if (err == MZ_OK) {
pglobal_info32->number_entry = (uint32_t)global_info64.number_entry;
pglobal_info32->size_comment = global_info64.size_comment;
pglobal_info32->number_disk_with_CD = global_info64.number_disk_with_CD;
}
return err;
}
int unzGetGlobalInfo64(unzFile file, unz_global_info64 *pglobal_info) {
mz_compat *compat = (mz_compat *)file;
const char *comment_ptr = NULL;
int32_t err = MZ_OK;
memset(pglobal_info, 0, sizeof(unz_global_info64));
if (!compat)
return UNZ_PARAMERROR;
err = mz_zip_get_comment(compat->handle, &comment_ptr);
if (err == MZ_OK)
pglobal_info->size_comment = (uint16_t)strlen(comment_ptr);
if ((err == MZ_OK) || (err == MZ_EXIST_ERROR))
err = mz_zip_get_number_entry(compat->handle, &pglobal_info->number_entry);
if (err == MZ_OK)
err = mz_zip_get_disk_number_with_cd(compat->handle, &pglobal_info->number_disk_with_CD);
return err;
}
int unzGetGlobalComment(unzFile file, char *comment, unsigned long comment_size) {
mz_compat *compat = (mz_compat *)file;
const char *comment_ptr = NULL;
int32_t err = MZ_OK;
if (!comment || !comment_size)
return UNZ_PARAMERROR;
err = mz_zip_get_comment(compat->handle, &comment_ptr);
if (err == MZ_OK) {
strncpy(comment, comment_ptr, comment_size - 1);
comment[comment_size - 1] = 0;
}
return err;
}
int unzOpenCurrentFile3(unzFile file, int *method, int *level, int raw, const char *password) {
mz_compat *compat = (mz_compat *)file;
mz_zip_file *file_info = NULL;
int32_t err = MZ_OK;
void *stream = NULL;
if (!compat)
return UNZ_PARAMERROR;
if (method)
*method = 0;
if (level)
*level = 0;
if (mz_zip_entry_is_open(compat->handle) == MZ_OK) {
/* zlib minizip does not error out here if close returns errors */
unzCloseCurrentFile(file);
}
compat->total_out = 0;
err = mz_zip_entry_read_open(compat->handle, (uint8_t)raw, password);
if (err == MZ_OK)
err = mz_zip_entry_get_info(compat->handle, &file_info);
if (err == MZ_OK) {
if (method) {
*method = file_info->compression_method;
}
if (level) {
*level = 6;
switch (file_info->flag & 0x06) {
case MZ_ZIP_FLAG_DEFLATE_SUPER_FAST:
*level = 1;
break;
case MZ_ZIP_FLAG_DEFLATE_FAST:
*level = 2;
break;
case MZ_ZIP_FLAG_DEFLATE_MAX:
*level = 9;
break;
}
}
}
if (err == MZ_OK)
err = mz_zip_get_stream(compat->handle, &stream);
if (err == MZ_OK)
compat->entry_pos = mz_stream_tell(stream);
return err;
}
int unzOpenCurrentFile(unzFile file) {
return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL);
}
int unzOpenCurrentFilePassword(unzFile file, const char *password) {
return unzOpenCurrentFile3(file, NULL, NULL, 0, password);
}
int unzOpenCurrentFile2(unzFile file, int *method, int *level, int raw) {
return unzOpenCurrentFile3(file, method, level, raw, NULL);
}
int unzReadCurrentFile(unzFile file, void *buf, uint32_t len) {
mz_compat *compat = (mz_compat *)file;
int32_t err = MZ_OK;
if (!compat || len >= INT32_MAX)
return UNZ_PARAMERROR;
err = mz_zip_entry_read(compat->handle, buf, (int32_t)len);
if (err > 0)
compat->total_out += (uint32_t)err;
return err;
}
int unzCloseCurrentFile(unzFile file) {
mz_compat *compat = (mz_compat *)file;
int32_t err = MZ_OK;
if (!compat)
return UNZ_PARAMERROR;
err = mz_zip_entry_close(compat->handle);
return err;
}
int unzGetCurrentFileInfo(unzFile file, unz_file_info *pfile_info, char *filename,
unsigned long filename_size, void *extrafield, unsigned long extrafield_size, char *comment,
unsigned long comment_size) {
mz_compat *compat = (mz_compat *)file;
mz_zip_file *file_info = NULL;
uint16_t bytes_to_copy = 0;
int32_t err = MZ_OK;
if (!compat)
return UNZ_PARAMERROR;
err = mz_zip_entry_get_info(compat->handle, &file_info);
if (err != MZ_OK)
return err;
if (pfile_info) {
pfile_info->version = file_info->version_madeby;
pfile_info->version_needed = file_info->version_needed;
pfile_info->flag = file_info->flag;
pfile_info->compression_method = file_info->compression_method;
pfile_info->mz_dos_date = mz_zip_time_t_to_dos_date(file_info->modified_date);
mz_zip_time_t_to_tm(file_info->modified_date, &pfile_info->tmu_date);
pfile_info->tmu_date.tm_year += 1900;
pfile_info->crc = file_info->crc;
pfile_info->size_filename = file_info->filename_size;
pfile_info->size_file_extra = file_info->extrafield_size;
pfile_info->size_file_comment = file_info->comment_size;
pfile_info->disk_num_start = (uint16_t)file_info->disk_number;
pfile_info->internal_fa = file_info->internal_fa;
pfile_info->external_fa = file_info->external_fa;
pfile_info->compressed_size = (uint32_t)file_info->compressed_size;
pfile_info->uncompressed_size = (uint32_t)file_info->uncompressed_size;
}
if (filename_size > 0 && filename && file_info->filename) {
bytes_to_copy = (uint16_t)filename_size;
if (bytes_to_copy > file_info->filename_size)
bytes_to_copy = file_info->filename_size;
memcpy(filename, file_info->filename, bytes_to_copy);
if (bytes_to_copy < filename_size)
filename[bytes_to_copy] = 0;
}
if (extrafield_size > 0 && extrafield) {
bytes_to_copy = (uint16_t)extrafield_size;