2001 lines
71 KiB
C
2001 lines
71 KiB
C
/* unzip.c -- IO for uncompress .zip files using zlib
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Version 1.1, February 14h, 2010
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part of the MiniZip project
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Copyright (C) 1998-2010 Gilles Vollant
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http://www.winimage.com/zLibDll/minizip.html
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Modifications of Unzip for Zip64
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Copyright (C) 2007-2008 Even Rouault
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Modifications for Zip64 support on both zip and unzip
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Copyright (C) 2009-2010 Mathias Svensson
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http://result42.com
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Modifications for AES, PKWARE disk spanning
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Copyright (C) 2010-2014 Nathan Moinvaziri
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This program is distributed under the terms of the same license as zlib.
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See the accompanying LICENSE file for the full text of the license.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <errno.h>
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#include "zlib.h"
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#include "unzip.h"
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#ifdef HAVE_AES
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# define AES_METHOD (99)
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# define AES_PWVERIFYSIZE (2)
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# define AES_MAXSALTLENGTH (16)
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# define AES_AUTHCODESIZE (10)
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# define AES_HEADERSIZE (11)
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# define AES_KEYSIZE(mode) (64 + (mode * 64))
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# include "aes/aes.h"
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# include "aes/fileenc.h"
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#endif
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#ifdef HAVE_APPLE_COMPRESSION
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# include <compression.h>
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#endif
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#ifndef NOUNCRYPT
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# include "crypt.h"
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#endif
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#define DISKHEADERMAGIC (0x08074b50)
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#define LOCALHEADERMAGIC (0x04034b50)
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#define CENTRALHEADERMAGIC (0x02014b50)
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#define ENDHEADERMAGIC (0x06054b50)
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#define ZIP64ENDHEADERMAGIC (0x06064b50)
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#define ZIP64ENDLOCHEADERMAGIC (0x07064b50)
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#define SIZECENTRALDIRITEM (0x2e)
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#define SIZECENTRALHEADERLOCATOR (0x14)
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#define SIZEZIPLOCALHEADER (0x1e)
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#ifndef BUFREADCOMMENT
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# define BUFREADCOMMENT (0x400)
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#endif
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#ifndef UNZ_BUFSIZE
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# define UNZ_BUFSIZE (UINT16_MAX)
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#endif
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#ifndef UNZ_MAXFILENAMEINZIP
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# define UNZ_MAXFILENAMEINZIP (256)
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#endif
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#ifndef ALLOC
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# define ALLOC(size) (malloc(size))
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#endif
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#ifndef TRYFREE
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# define TRYFREE(p) {if (p) free(p);}
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#endif
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#ifdef _MSC_VER
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# pragma warning(push)
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# pragma warning(disable : 4131 4244 4189 4245)
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#endif // _MSC_VER
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const char unz_copyright[] =
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" unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
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/* unz_file_info_internal contain internal info about a file in zipfile*/
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typedef struct unz_file_info64_internal_s
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{
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uint64_t offset_curfile; /* relative offset of local header 8 bytes */
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uint64_t byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx) */
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#ifdef HAVE_AES
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uint8_t aes_encryption_mode;
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uint16_t aes_compression_method;
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uint16_t aes_version;
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#endif
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} unz_file_info64_internal;
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/* file_in_zip_read_info_s contain internal information about a file in zipfile */
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typedef struct
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{
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uint8_t *read_buffer; /* internal buffer for compressed data */
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z_stream stream; /* zLib stream structure for inflate */
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#ifdef HAVE_BZIP2
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bz_stream bstream; /* bzLib stream structure for bziped */
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#endif
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#ifdef HAVE_APPLE_COMPRESSION
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compression_stream astream; /* libcompression stream structure */
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#endif
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#ifdef HAVE_AES
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fcrypt_ctx aes_ctx;
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#endif
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uint64_t pos_in_zipfile; /* position in byte on the zipfile, for fseek */
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uint8_t stream_initialised; /* flag set if stream structure is initialised */
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uint64_t offset_local_extrafield; /* offset of the local extra field */
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uint16_t size_local_extrafield; /* size of the local extra field */
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uint64_t pos_local_extrafield; /* position in the local extra field in read */
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uint64_t total_out_64;
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uint32_t crc32; /* crc32 of all data uncompressed */
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uint32_t crc32_wait; /* crc32 we must obtain after decompress all */
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uint64_t rest_read_compressed; /* number of byte to be decompressed */
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uint64_t rest_read_uncompressed; /* number of byte to be obtained after decomp */
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zlib_filefunc64_32_def z_filefunc;
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voidpf filestream; /* io structore of the zipfile */
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uint16_t compression_method; /* compression method (0==store) */
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uint64_t byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx) */
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int raw;
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} file_in_zip64_read_info_s;
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/* unz64_s contain internal information about the zipfile */
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typedef struct
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{
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zlib_filefunc64_32_def z_filefunc;
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voidpf filestream; /* io structure of the current zipfile */
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voidpf filestream_with_CD; /* io structure of the disk with the central directory */
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unz_global_info64 gi; /* public global information */
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uint64_t byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx) */
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uint64_t num_file; /* number of the current file in the zipfile */
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uint64_t pos_in_central_dir; /* pos of the current file in the central dir */
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uint64_t current_file_ok; /* flag about the usability of the current file */
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uint64_t central_pos; /* position of the beginning of the central dir */
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uint32_t number_disk; /* number of the current disk, used for spanning ZIP */
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uint64_t size_central_dir; /* size of the central directory */
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uint64_t offset_central_dir; /* offset of start of central directory with
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respect to the starting disk number */
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unz_file_info64 cur_file_info; /* public info about the current file in zip*/
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unz_file_info64_internal cur_file_info_internal;
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/* private info about it*/
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file_in_zip64_read_info_s *pfile_in_zip_read;
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/* structure about the current file if we are decompressing it */
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int is_zip64; /* is the current file zip64 */
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#ifndef NOUNCRYPT
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uint32_t keys[3]; /* keys defining the pseudo-random sequence */
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const z_crc_t *pcrc_32_tab;
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#endif
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} unz64_s;
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/* Read a byte from a gz_stream; Return EOF for end of file. */
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static int unzReadUInt8(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint8_t *value)
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{
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uint8_t c = 0;
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if (ZREAD64(*pzlib_filefunc_def, filestream, &c, 1) == 1)
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{
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*value = (uint8_t)c;
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return UNZ_OK;
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}
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*value = 0;
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if (ZERROR64(*pzlib_filefunc_def, filestream))
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return UNZ_ERRNO;
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return UNZ_EOF;
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}
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static int unzReadUInt16(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint16_t *value)
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{
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uint16_t x;
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uint8_t c = 0;
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int err = UNZ_OK;
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
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x = (uint16_t)c;
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if (err == UNZ_OK)
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
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x |= ((uint16_t)c) << 8;
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if (err == UNZ_OK)
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*value = x;
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else
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*value = 0;
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return err;
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}
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static int unzReadUInt32(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint32_t *value)
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{
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uint32_t x = 0;
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uint8_t c = 0;
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int err = UNZ_OK;
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
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x = (uint32_t)c;
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if (err == UNZ_OK)
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
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x |= ((uint32_t)c) << 8;
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if (err == UNZ_OK)
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
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x |= ((uint32_t)c) << 16;
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if (err == UNZ_OK)
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
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x += ((uint32_t)c) << 24;
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if (err == UNZ_OK)
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*value = x;
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else
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*value = 0;
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return err;
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}
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static int unzReadUInt64(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint64_t *value)
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{
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uint64_t x = 0;
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uint8_t i = 0;
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int err = UNZ_OK;
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
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x = (uint64_t)i;
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if (err == UNZ_OK)
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
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x |= ((uint64_t)i) << 8;
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if (err == UNZ_OK)
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
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x |= ((uint64_t)i) << 16;
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if (err == UNZ_OK)
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
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x |= ((uint64_t)i) << 24;
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if (err == UNZ_OK)
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
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x |= ((uint64_t)i) << 32;
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if (err == UNZ_OK)
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
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x |= ((uint64_t)i) << 40;
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if (err == UNZ_OK)
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
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x |= ((uint64_t)i) << 48;
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if (err == UNZ_OK)
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err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
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x |= ((uint64_t)i) << 56;
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if (err == UNZ_OK)
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*value = x;
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else
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*value = 0;
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return err;
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}
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/* Locate the Central directory of a zip file (at the end, just before the global comment) */
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static uint64_t unzSearchCentralDir(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream)
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{
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uint8_t buf[BUFREADCOMMENT + 4];
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uint64_t file_size = 0;
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uint64_t back_read = 4;
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uint64_t max_back = UINT16_MAX; /* maximum size of global comment */
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uint64_t pos_found = 0;
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uint32_t read_size = 0;
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uint64_t read_pos = 0;
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uint32_t i = 0;
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if (ZSEEK64(*pzlib_filefunc_def, filestream, 0, ZLIB_FILEFUNC_SEEK_END) != 0)
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return 0;
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file_size = ZTELL64(*pzlib_filefunc_def, filestream);
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if (max_back > file_size)
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max_back = file_size;
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while (back_read < max_back)
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{
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if (back_read + BUFREADCOMMENT > max_back)
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back_read = max_back;
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else
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back_read += BUFREADCOMMENT;
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read_pos = file_size - back_read;
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read_size = ((BUFREADCOMMENT + 4) < (file_size - read_pos)) ?
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(BUFREADCOMMENT + 4) : (uint32_t)(file_size - read_pos);
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if (ZSEEK64(*pzlib_filefunc_def, filestream, read_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
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break;
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if (ZREAD64(*pzlib_filefunc_def, filestream, buf, read_size) != read_size)
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break;
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for (i = read_size - 3; (i--) > 0;)
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if (((*(buf+i)) == (ENDHEADERMAGIC & 0xff)) &&
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((*(buf+i+1)) == (ENDHEADERMAGIC >> 8 & 0xff)) &&
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((*(buf+i+2)) == (ENDHEADERMAGIC >> 16 & 0xff)) &&
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((*(buf+i+3)) == (ENDHEADERMAGIC >> 24 & 0xff)))
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{
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pos_found = read_pos+i;
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break;
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}
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if (pos_found != 0)
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break;
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}
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return pos_found;
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}
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/* Locate the Central directory 64 of a zipfile (at the end, just before the global comment) */
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static uint64_t unzSearchCentralDir64(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream,
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const uint64_t endcentraloffset)
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{
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uint64_t offset = 0;
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uint32_t value32 = 0;
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/* Zip64 end of central directory locator */
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if (ZSEEK64(*pzlib_filefunc_def, filestream, endcentraloffset - SIZECENTRALHEADERLOCATOR, ZLIB_FILEFUNC_SEEK_SET) != 0)
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return 0;
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/* Read locator signature */
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if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
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return 0;
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if (value32 != ZIP64ENDLOCHEADERMAGIC)
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return 0;
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/* Number of the disk with the start of the zip64 end of central directory */
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if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
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return 0;
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/* Relative offset of the zip64 end of central directory record */
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if (unzReadUInt64(pzlib_filefunc_def, filestream, &offset) != UNZ_OK)
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return 0;
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/* Total number of disks */
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if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
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return 0;
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/* Goto end of central directory record */
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if (ZSEEK64(*pzlib_filefunc_def, filestream, offset, ZLIB_FILEFUNC_SEEK_SET) != 0)
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return 0;
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/* The signature */
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if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
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return 0;
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if (value32 != ZIP64ENDHEADERMAGIC)
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return 0;
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return offset;
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}
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static unzFile unzOpenInternal(const void *path, zlib_filefunc64_32_def *pzlib_filefunc64_32_def)
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{
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unz64_s us;
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unz64_s *s = NULL;
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uint64_t central_pos = 0;
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uint64_t central_pos64 = 0;
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uint64_t number_entry_CD = 0;
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uint16_t value16 = 0;
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uint32_t value32 = 0;
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uint64_t value64 = 0;
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voidpf filestream = NULL;
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int err = UNZ_OK;
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if (unz_copyright[0] != ' ')
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return NULL;
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us.filestream = NULL;
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us.filestream_with_CD = NULL;
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us.z_filefunc.zseek32_file = NULL;
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us.z_filefunc.ztell32_file = NULL;
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if (pzlib_filefunc64_32_def == NULL)
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fill_fopen64_filefunc(&us.z_filefunc.zfile_func64);
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else
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us.z_filefunc = *pzlib_filefunc64_32_def;
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us.filestream = ZOPEN64(us.z_filefunc, path, ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_EXISTING);
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if (us.filestream == NULL)
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return NULL;
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us.filestream_with_CD = us.filestream;
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us.is_zip64 = 0;
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/* Search for end of central directory header */
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central_pos = unzSearchCentralDir(&us.z_filefunc, us.filestream);
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if (central_pos)
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{
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if (ZSEEK64(us.z_filefunc, us.filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
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err = UNZ_ERRNO;
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/* The signature, already checked */
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if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
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err = UNZ_ERRNO;
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/* Number of this disk */
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if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
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err = UNZ_ERRNO;
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us.number_disk = value16;
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/* Number of the disk with the start of the central directory */
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if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
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err = UNZ_ERRNO;
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us.gi.number_disk_with_CD = value16;
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/* Total number of entries in the central directory on this disk */
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if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
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err = UNZ_ERRNO;
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us.gi.number_entry = value16;
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/* Total number of entries in the central directory */
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if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
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err = UNZ_ERRNO;
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number_entry_CD = value16;
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if (number_entry_CD != us.gi.number_entry)
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err = UNZ_BADZIPFILE;
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/* Size of the central directory */
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if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
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err = UNZ_ERRNO;
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us.size_central_dir = value32;
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/* Offset of start of central directory with respect to the starting disk number */
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if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
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err = UNZ_ERRNO;
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us.offset_central_dir = value32;
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/* Zipfile comment length */
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if (unzReadUInt16(&us.z_filefunc, us.filestream, &us.gi.size_comment) != UNZ_OK)
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err = UNZ_ERRNO;
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if (err == UNZ_OK)
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{
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/* Search for Zip64 end of central directory header */
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central_pos64 = unzSearchCentralDir64(&us.z_filefunc, us.filestream, central_pos);
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if (central_pos64)
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{
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central_pos = central_pos64;
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us.is_zip64 = 1;
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if (ZSEEK64(us.z_filefunc, us.filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
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err = UNZ_ERRNO;
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/* the signature, already checked */
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if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
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err = UNZ_ERRNO;
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/* size of zip64 end of central directory record */
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if (unzReadUInt64(&us.z_filefunc, us.filestream, &value64) != UNZ_OK)
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err = UNZ_ERRNO;
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/* 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.gi.number_entry == UINT16_MAX) || (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;
|
|
us.pfile_in_zip_read = NULL;
|
|
|
|
s = (unz64_s*)ALLOC(sizeof(unz64_s));
|
|
if (s != NULL)
|
|
{
|
|
*s = us;
|
|
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;
|
|
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;
|
|
zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def;
|
|
zlib_filefunc64_32_def_fill.ztell32_file = NULL;
|
|
zlib_filefunc64_32_def_fill.zseek32_file = NULL;
|
|
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_s *s;
|
|
if (file == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *s;
|
|
uint32_t number_disk_next = 0;
|
|
|
|
s = (unz64_s*)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_s *s = NULL;
|
|
if (file == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *s = NULL;
|
|
if (file == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)file;
|
|
*pglobal_info = s->gi;
|
|
return UNZ_OK;
|
|
}
|
|
|
|
extern int ZEXPORT unzGetGlobalComment(unzFile file, char *comment, uint16_t comment_size)
|
|
{
|
|
unz64_s *s = NULL;
|
|
uint16_t bytes_to_read = comment_size;
|
|
if (file == NULL)
|
|
return (int)UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *s = NULL;
|
|
uint32_t bytes_to_read = 0;
|
|
int err = UNZ_OK;
|
|
|
|
if (file == NULL)
|
|
return (int)UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *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_s*)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_s *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;
|
|
else if ((err == UNZ_OK) && (size_filename != s->cur_file_info.size_filename))
|
|
err = UNZ_BADZIPFILE;
|
|
|
|
*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;
|
|
}
|
|
|
|
/*
|
|
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_s *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_s*)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;
|
|
|
|
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);
|
|
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->raw = raw;
|
|
|
|
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;
|
|
|
|
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)
|
|
{
|
|
TRYFREE(pfile_in_zip_read_info);
|
|
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
|
|
{
|
|
TRYFREE(pfile_in_zip_read_info);
|
|
return UNZ_BADZIPFILE;
|
|
}
|
|
}
|
|
|
|
pfile_in_zip_read_info->crc32_wait = s->cur_file_info.crc;
|
|
pfile_in_zip_read_info->crc32 = 0;
|
|
pfile_in_zip_read_info->total_out_64 = 0;
|
|
pfile_in_zip_read_info->compression_method = compression_method;
|
|
pfile_in_zip_read_info->filestream = s->filestream;
|
|
pfile_in_zip_read_info->z_filefunc = s->z_filefunc;
|
|
if (s->number_disk == s->gi.number_disk_with_CD)
|
|
pfile_in_zip_read_info->byte_before_the_zipfile = s->byte_before_the_zipfile;
|
|
else
|
|
pfile_in_zip_read_info->byte_before_the_zipfile = 0;
|
|
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;
|
|
|
|
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;
|
|
|
|
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)0;
|
|
pfile_in_zip_read_info->stream.next_in = (voidpf)0;
|
|
pfile_in_zip_read_info->stream.avail_in = 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)
|
|
{
|
|
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.next_in = (voidpf)0;
|
|
pfile_in_zip_read_info->stream.avail_in = 0;
|
|
|
|
#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
|
|
*/
|
|
}
|
|
}
|
|
|
|
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->pos_in_zipfile = s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + size_variable;
|
|
pfile_in_zip_read_info->stream.avail_in = 0;
|
|
|
|
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]);
|
|
|
|
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_s *s = NULL;
|
|
uint32_t read = 0;
|
|
int err = UNZ_OK;
|
|
|
|
if (file == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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;
|
|
if (len > UINT16_MAX)
|
|
return UNZ_PARAMERROR;
|
|
|
|
s->pfile_in_zip_read->stream.next_out = (uint8_t*)buf;
|
|
s->pfile_in_zip_read->stream.avail_out = (uint16_t)len;
|
|
|
|
if (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 = (uint16_t)s->pfile_in_zip_read->rest_read_compressed +
|
|
s->pfile_in_zip_read->stream.avail_in;
|
|
}
|
|
else
|
|
{
|
|
if (len > s->pfile_in_zip_read->rest_read_uncompressed)
|
|
s->pfile_in_zip_read->stream.avail_out = (uint16_t)s->pfile_in_zip_read->rest_read_uncompressed;
|
|
}
|
|
|
|
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)
|
|
memcpy(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 = (uint16_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 = (uint16_t)(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_s *s = NULL;
|
|
uint64_t size_to_read = 0;
|
|
uint32_t read_now = 0;
|
|
|
|
if (file == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *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_s*)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_wait)
|
|
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_s *s = NULL;
|
|
int err = UNZ_OK;
|
|
|
|
if (file == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *s = NULL;
|
|
int err = UNZ_OK;
|
|
|
|
if (file == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *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_s*)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_s *s = NULL;
|
|
|
|
if (file == NULL || file_pos == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *s = NULL;
|
|
int err = UNZ_OK;
|
|
|
|
if (file == NULL || file_pos == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *s = NULL;
|
|
|
|
if (file == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *s = NULL;
|
|
int err = UNZ_OK;
|
|
|
|
if (file == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *s = NULL;
|
|
if (file == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *s = NULL;
|
|
if (file == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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_s *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_s*)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_s *s = NULL;
|
|
if (file == NULL)
|
|
return UNZ_PARAMERROR;
|
|
s = (unz64_s*)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;
|
|
}
|
|
|
|
#ifdef _MSC_VER
|
|
# pragma warning(pop)
|
|
#endif // _MSC_VER
|