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1076 lines (901 loc) · 32.1 KB
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/* mz_compat.c -- Backwards compatible interface for older versions
Version 2.9.2, February 12, 2020
part of the MiniZip project
Copyright (C) 2010-2020 Nathan Moinvaziri
https://github.com/nmoinvaz/minizip
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;
/***************************************************************************/
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)
{
zlib_filefunc64_def pzlib = mz_stream_os_get_interface();
return zipOpen2(path, append, NULL, &pzlib);
}
zipFile zipOpen64(const void *path, int append)
{
zlib_filefunc64_def pzlib = mz_stream_os_get_interface();
return zipOpen2(path, append, NULL, &pzlib);
}
zipFile zipOpen2(const char *path, int append, const char **globalcomment,
zlib_filefunc_def *pzlib_filefunc_def)
{
return zipOpen2_64(path, append, globalcomment, pzlib_filefunc_def);
}
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 (mz_stream_create(&stream, (mz_stream_vtbl *)*pzlib_filefunc_def) == NULL)
return NULL;
}
else
{
if (mz_stream_os_create(&stream) == NULL)
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 == NULL)
{
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;
mz_zip_create(&handle);
err = mz_zip_open(handle, stream, mode);
if (err != MZ_OK)
{
mz_zip_delete(&handle);
return NULL;
}
if (globalcomment != NULL)
mz_zip_get_comment(handle, globalcomment);
compat = (mz_compat *)MZ_ALLOC(sizeof(mz_compat));
if (compat != NULL)
{
compat->handle = handle;
compat->stream = stream;
}
else
{
mz_zip_delete(&handle);
}
return (zipFile)compat;
}
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, uint16_t compression_method, int level,
int raw, int windowBits, int memLevel, int strategy, const char *password,
uint32_t crc_for_crypting, uint16_t version_madeby, uint16_t flag_base, int zip64)
{
mz_compat *compat = (mz_compat *)file;
mz_zip_file file_info;
uint64_t dos_date = 0;
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 == NULL)
return ZIP_PARAMERROR;
memset(&file_info, 0, sizeof(file_info));
if (zipfi != NULL)
{
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 == NULL)
filename = "-";
file_info.compression_method = 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 = version_madeby;
file_info.comment = comment;
file_info.flag = flag_base;
if (zip64)
file_info.zip64 = MZ_ZIP64_FORCE;
else
file_info.zip64 = MZ_ZIP64_DISABLE;
#ifdef HAVE_WZAES
if ((password != NULL) || (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, uint16_t compression_method, int level,
int raw, int windowBits, int memLevel, int strategy, const char *password,
uint32_t crc_for_crypting, uint16_t version_madeby, uint16_t 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, uint16_t compression_method, int level,
int raw, int windowBits, int memLevel, int strategy, const char *password,
uint32_t crc_for_crypting, uint16_t version_madeby, uint16_t 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, uint16_t compression_method, int level,
int raw, int windowBits, int memLevel, int strategy, const char *password,
uint32_t crc_for_crypting)
{
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, 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, uint16_t 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, uint16_t compression_method, int level,
int raw)
{
return zipOpenNewFileInZip4_64(file, filename, zipfi, extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global, comment, compression_method, level, raw, 0,
0, 0, NULL, 0, MZ_VERSION_MADEBY, 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, uint16_t compression_method, int level,
int raw, int zip64)
{
return zipOpenNewFileInZip4_64(file, filename, zipfi, extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global, comment, compression_method, level, raw, 0,
0, 0, NULL, 0, MZ_VERSION_MADEBY, 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, uint16_t compression_method, int level)
{
return zipOpenNewFileInZip4_64(file, filename, zipfi, extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global, comment, compression_method, level, 0, 0,
0, 0, NULL, 0, MZ_VERSION_MADEBY, 0, 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, uint16_t compression_method, int level,
int zip64)
{
return zipOpenNewFileInZip4_64(file, filename, zipfi, extrafield_local, size_extrafield_local,
extrafield_global, size_extrafield_global, comment, compression_method, level, 0, 0,
0, 0, NULL, 0, MZ_VERSION_MADEBY, 0, zip64);
}
int zipWriteInFileInZip(zipFile file, const void *buf, uint32_t len)
{
mz_compat *compat = (mz_compat *)file;
int32_t written = 0;
if (compat == NULL || 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, uint32_t uncompressed_size, uint32_t crc32)
{
return zipCloseFileInZipRaw64(file, uncompressed_size, crc32);
}
int zipCloseFileInZipRaw64(zipFile file, int64_t uncompressed_size, uint32_t crc32)
{
mz_compat *compat = (mz_compat *)file;
if (compat == NULL)
return ZIP_PARAMERROR;
return mz_zip_entry_close_raw(compat->handle, uncompressed_size, crc32);
}
int zipCloseFileInZip(zipFile file)
{
return zipCloseFileInZip64(file);
}
int zipCloseFileInZip64(zipFile file)
{
mz_compat *compat = (mz_compat *)file;
if (compat == NULL)
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 != NULL)
err = zipClose2_MZ(file, global_comment, version_madeby);
if (compat->stream != NULL)
{
mz_stream_close(compat->stream);
mz_stream_delete(&compat->stream);
}
MZ_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 == NULL)
return ZIP_PARAMERROR;
if (compat->handle == NULL)
return err;
if (global_comment != NULL)
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;
}
void* zipGetStream(zipFile file)
{
mz_compat *compat = (mz_compat *)file;
if (compat == NULL)
return NULL;
return (void *)compat->stream;
}
/***************************************************************************/
unzFile unzOpen(const char *path)
{
return unzOpen64(path);
}
unzFile unzOpen64(const void *path)
{
zlib_filefunc64_def pzlib = mz_stream_os_get_interface();
return unzOpen2(path, &pzlib);
}
unzFile unzOpen2(const char *path, zlib_filefunc_def *pzlib_filefunc_def)
{
return unzOpen2_64(path, pzlib_filefunc_def);
}
unzFile unzOpen2_64(const void *path, zlib_filefunc64_def *pzlib_filefunc_def)
{
unzFile unz = NULL;
void *stream = NULL;
if (pzlib_filefunc_def)
{
if (mz_stream_create(&stream, (mz_stream_vtbl *)*pzlib_filefunc_def) == NULL)
return NULL;
}
else
{
if (mz_stream_os_create(&stream) == NULL)
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 == NULL)
{
mz_stream_delete(&stream);
return NULL;
}
return unz;
}
unzFile unzOpen_MZ(void *stream)
{
mz_compat *compat = NULL;
int32_t err = MZ_OK;
void *handle = NULL;
mz_zip_create(&handle);
err = mz_zip_open(handle, stream, MZ_OPEN_MODE_READ);
if (err != MZ_OK)
{
mz_zip_delete(&handle);
return NULL;
}
compat = (mz_compat *)MZ_ALLOC(sizeof(mz_compat));
if (compat != NULL)
{
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 == NULL)
return UNZ_PARAMERROR;
if (compat->handle != NULL)
err = unzClose_MZ(file);
if (compat->stream != NULL)
{
mz_stream_close(compat->stream);
mz_stream_delete(&compat->stream);
}
MZ_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 == NULL)
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 == NULL)
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 == NULL)
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, uint16_t comment_size)
{
mz_compat *compat = (mz_compat *)file;
const char *comment_ptr = NULL;
int32_t err = MZ_OK;
if (comment == NULL || comment_size == 0)
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 == NULL)
return UNZ_PARAMERROR;
if (method != NULL)
*method = 0;
if (level != NULL)
*level = 0;
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 != NULL)
{
*method = file_info->compression_method;
}
if (level != NULL)
{
*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 == NULL || 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 == NULL)
return UNZ_PARAMERROR;
err = mz_zip_entry_close(compat->handle);
return err;
}
int 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)
{
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 == NULL)
return UNZ_PARAMERROR;
err = mz_zip_entry_get_info(compat->handle, &file_info);
if ((err == MZ_OK) && (pfile_info != NULL))
{
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 != NULL && file_info->filename != NULL)
{
bytes_to_copy = 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 != NULL)
{
bytes_to_copy = extrafield_size;
if (bytes_to_copy > file_info->extrafield_size)
bytes_to_copy = file_info->extrafield_size;
memcpy(extrafield, file_info->extrafield, bytes_to_copy);
}
if (comment_size > 0 && comment != NULL && file_info->comment != NULL)
{
bytes_to_copy = comment_size;
if (bytes_to_copy > file_info->comment_size)
bytes_to_copy = file_info->comment_size;
memcpy(comment, file_info->comment, bytes_to_copy);
if (bytes_to_copy < comment_size)
comment[bytes_to_copy] = 0;
}
}
return err;
}
int 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)
{
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 == NULL)
return UNZ_PARAMERROR;
err = mz_zip_entry_get_info(compat->handle, &file_info);
if ((err == MZ_OK) && (pfile_info != NULL))
{
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 = file_info->disk_number;
pfile_info->internal_fa = file_info->internal_fa;
pfile_info->external_fa = file_info->external_fa;
pfile_info->compressed_size = (uint64_t)file_info->compressed_size;
pfile_info->uncompressed_size = (uint64_t)file_info->uncompressed_size;
if (filename_size > 0 && filename != NULL && file_info->filename != NULL)
{
bytes_to_copy = 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 != NULL)
{
bytes_to_copy = extrafield_size;
if (bytes_to_copy > file_info->extrafield_size)
bytes_to_copy = file_info->extrafield_size;
memcpy(extrafield, file_info->extrafield, bytes_to_copy);
}
if (comment_size > 0 && comment != NULL && file_info->comment != NULL)
{
bytes_to_copy = comment_size;
if (bytes_to_copy > file_info->comment_size)
bytes_to_copy = file_info->comment_size;
memcpy(comment, file_info->comment, bytes_to_copy);
if (bytes_to_copy < comment_size)
comment[bytes_to_copy] = 0;
}
}
return err;
}
int unzGoToFirstFile(unzFile file)
{
mz_compat *compat = (mz_compat *)file;
if (compat == NULL)
return UNZ_PARAMERROR;
compat->entry_index = 0;
return mz_zip_goto_first_entry(compat->handle);
}
int unzGoToNextFile(unzFile file)
{
mz_compat *compat = (mz_compat *)file;
int32_t err = MZ_OK;
if (compat == NULL)
return UNZ_PARAMERROR;
err = mz_zip_goto_next_entry(compat->handle);
if (err != MZ_END_OF_LIST)
compat->entry_index += 1;
return err;
}
int unzLocateFile(unzFile file, const char *filename, unzFileNameComparer filename_compare_func)
{
mz_compat *compat = (mz_compat *)file;
mz_zip_file *file_info = NULL;
uint64_t preserve_index = 0;
int32_t err = MZ_OK;
int32_t result = 0;
if (compat == NULL)
return UNZ_PARAMERROR;
preserve_index = compat->entry_index;
err = mz_zip_goto_first_entry(compat->handle);
while (err == MZ_OK)
{
err = mz_zip_entry_get_info(compat->handle, &file_info);
if (err != MZ_OK)
break;
if (filename_compare_func != NULL)
result = filename_compare_func(file, filename, file_info->filename);
else
result = strcmp(filename, file_info->filename);
if (result == 0)
return MZ_OK;
err = mz_zip_goto_next_entry(compat->handle);
}
compat->entry_index = preserve_index;
return err;
}
/***************************************************************************/
int unzGetFilePos(unzFile file, unz_file_pos *file_pos)
{
mz_compat *compat = (mz_compat *)file;
int32_t offset = 0;
if (compat == NULL || file_pos == NULL)
return UNZ_PARAMERROR;
offset = unzGetOffset(file);
if (offset < 0)
return offset;
file_pos->pos_in_zip_directory = (uint32_t)offset;
file_pos->num_of_file = (uint32_t)compat->entry_index;
return MZ_OK;
}
int unzGoToFilePos(unzFile file, unz_file_pos *file_pos)
{
mz_compat *compat = (mz_compat *)file;
unz64_file_pos file_pos64;
if (compat == NULL || 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);
}
int unzGetFilePos64(unzFile file, unz64_file_pos *file_pos)
{
mz_compat *compat = (mz_compat *)file;
int64_t offset = 0;
if (compat == NULL || file_pos == NULL)
return UNZ_PARAMERROR;
offset = unzGetOffset64(file);
if (offset < 0)
return (int)offset;
file_pos->pos_in_zip_directory = offset;
file_pos->num_of_file = compat->entry_index;
return UNZ_OK;
}
int unzGoToFilePos64(unzFile file, const unz64_file_pos *file_pos)
{
mz_compat *compat = (mz_compat *)file;
int32_t err = MZ_OK;
if (compat == NULL || file_pos == NULL)
return UNZ_PARAMERROR;
err = mz_zip_goto_entry(compat->handle, file_pos->pos_in_zip_directory);
if (err == MZ_OK)
compat->entry_index = file_pos->num_of_file;
return err;
}
int32_t unzGetOffset(unzFile file)
{
return (int32_t)unzGetOffset64(file);
}
int64_t unzGetOffset64(unzFile file)
{
mz_compat *compat = (mz_compat *)file;
if (compat == NULL)
return UNZ_PARAMERROR;
return mz_zip_get_entry(compat->handle);
}
int unzSetOffset(unzFile file, uint32_t pos)
{
return unzSetOffset64(file, pos);
}
int unzSetOffset64(unzFile file, int64_t pos)
{
mz_compat *compat = (mz_compat *)file;
if (compat == NULL)
return UNZ_PARAMERROR;
return (int)mz_zip_goto_entry(compat->handle, pos);
}
int unzGetLocalExtrafield(unzFile file, void *buf, unsigned int len)
{
mz_compat *compat = (mz_compat *)file;
mz_zip_file *file_info = NULL;
int32_t err = MZ_OK;
int32_t bytes_to_copy = 0;
if (compat == NULL || buf == NULL || len >= INT32_MAX)
return UNZ_PARAMERROR;
err = mz_zip_entry_get_local_info(compat->handle, &file_info);
if (err != MZ_OK)
return err;
bytes_to_copy = (int32_t)len;
if (bytes_to_copy > file_info->extrafield_size)
bytes_to_copy = file_info->extrafield_size;
memcpy(buf, file_info->extrafield, bytes_to_copy);
return MZ_OK;
}
int64_t unztell(unzFile file)
{
mz_compat *compat = (mz_compat *)file;
if (compat == NULL)
return UNZ_PARAMERROR;
return (int64_t)compat->total_out;
}
int32_t unzTell(unzFile file)
{
mz_compat *compat = (mz_compat *)file;
if (compat == NULL)
return UNZ_PARAMERROR;
return (int32_t)compat->total_out;
}
int64_t unzTell64(unzFile file)
{
mz_compat *compat = (mz_compat *)file;
if (compat == NULL)
return UNZ_PARAMERROR;
return (int64_t)compat->total_out;
}
int unzSeek(unzFile file, int32_t offset, int origin)
{
return unzSeek64(file, offset, origin);
}
int unzSeek64(unzFile file, int64_t offset, int origin)
{
mz_compat *compat = (mz_compat *)file;
mz_zip_file *file_info = NULL;
int64_t position = 0;
int32_t err = MZ_OK;
void *stream = NULL;
if (compat == NULL)
return UNZ_PARAMERROR;
err = mz_zip_entry_get_info(compat->handle, &file_info);
if (err != MZ_OK)
return err;
if (file_info->compression_method != MZ_COMPRESS_METHOD_STORE)
return UNZ_ERRNO;
if (origin == SEEK_SET)
position = offset;
else if (origin == SEEK_CUR)
position = compat->total_out + offset;
else if (origin == SEEK_END)
position = (int64_t)file_info->compressed_size + offset;
else
return UNZ_PARAMERROR;
if (position > (int64_t)file_info->compressed_size)
return UNZ_PARAMERROR;