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-rw-r--r--src/mesh/assimp-master/contrib/unzip/unzip.c2000
1 files changed, 0 insertions, 2000 deletions
diff --git a/src/mesh/assimp-master/contrib/unzip/unzip.c b/src/mesh/assimp-master/contrib/unzip/unzip.c
deleted file mode 100644
index f1eddee..0000000
--- a/src/mesh/assimp-master/contrib/unzip/unzip.c
+++ /dev/null
@@ -1,2000 +0,0 @@
-/* unzip.c -- IO for uncompress .zip files using zlib
- Version 1.1, February 14h, 2010
- part of the MiniZip project
-
- Copyright (C) 1998-2010 Gilles Vollant
- http://www.winimage.com/zLibDll/minizip.html
- Modifications of Unzip for Zip64
- Copyright (C) 2007-2008 Even Rouault
- Modifications for Zip64 support on both zip and unzip
- Copyright (C) 2009-2010 Mathias Svensson
- http://result42.com
- Modifications for AES, PKWARE disk spanning
- Copyright (C) 2010-2014 Nathan Moinvaziri
-
- This program is distributed under the terms of the same license as zlib.
- See the accompanying LICENSE file for the full text of the license.
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-#include <errno.h>
-
-#include "zlib.h"
-#include "unzip.h"
-
-#ifdef HAVE_AES
-# define AES_METHOD (99)
-# define AES_PWVERIFYSIZE (2)
-# define AES_MAXSALTLENGTH (16)
-# define AES_AUTHCODESIZE (10)
-# define AES_HEADERSIZE (11)
-# define AES_KEYSIZE(mode) (64 + (mode * 64))
-
-# include "aes/aes.h"
-# include "aes/fileenc.h"
-#endif
-#ifdef HAVE_APPLE_COMPRESSION
-# include <compression.h>
-#endif
-
-#ifndef NOUNCRYPT
-# include "crypt.h"
-#endif
-
-#define DISKHEADERMAGIC (0x08074b50)
-#define LOCALHEADERMAGIC (0x04034b50)
-#define CENTRALHEADERMAGIC (0x02014b50)
-#define ENDHEADERMAGIC (0x06054b50)
-#define ZIP64ENDHEADERMAGIC (0x06064b50)
-#define ZIP64ENDLOCHEADERMAGIC (0x07064b50)
-
-#define SIZECENTRALDIRITEM (0x2e)
-#define SIZECENTRALHEADERLOCATOR (0x14)
-#define SIZEZIPLOCALHEADER (0x1e)
-
-#ifndef BUFREADCOMMENT
-# define BUFREADCOMMENT (0x400)
-#endif
-
-#ifndef UNZ_BUFSIZE
-# define UNZ_BUFSIZE (UINT16_MAX)
-#endif
-#ifndef UNZ_MAXFILENAMEINZIP
-# define UNZ_MAXFILENAMEINZIP (256)
-#endif
-
-#ifndef ALLOC
-# define ALLOC(size) (malloc(size))
-#endif
-#ifndef TRYFREE
-# define TRYFREE(p) {if (p) free(p);}
-#endif
-
-#ifdef _WIN32
-# pragma warning(push)
-# pragma warning(disable : 4131 4244 4189 4245)
-#endif // _WIN32
-
-const char unz_copyright[] =
- " unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
-
-/* unz_file_info_internal contain internal info about a file in zipfile*/
-typedef struct unz_file_info64_internal_s
-{
- uint64_t offset_curfile; /* relative offset of local header 8 bytes */
- uint64_t byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx) */
-#ifdef HAVE_AES
- uint8_t aes_encryption_mode;
- uint16_t aes_compression_method;
- uint16_t aes_version;
-#endif
-} unz_file_info64_internal;
-
-/* file_in_zip_read_info_s contain internal information about a file in zipfile */
-typedef struct
-{
- uint8_t *read_buffer; /* internal buffer for compressed data */
- z_stream stream; /* zLib stream structure for inflate */
-#ifdef HAVE_BZIP2
- bz_stream bstream; /* bzLib stream structure for bziped */
-#endif
-#ifdef HAVE_APPLE_COMPRESSION
- compression_stream astream; /* libcompression stream structure */
-#endif
-#ifdef HAVE_AES
- fcrypt_ctx aes_ctx;
-#endif
- uint64_t pos_in_zipfile; /* position in byte on the zipfile, for fseek */
- uint8_t stream_initialised; /* flag set if stream structure is initialised */
-
- uint64_t offset_local_extrafield; /* offset of the local extra field */
- uint16_t size_local_extrafield; /* size of the local extra field */
- uint64_t pos_local_extrafield; /* position in the local extra field in read */
- uint64_t total_out_64;
-
- uint32_t crc32; /* crc32 of all data uncompressed */
- uint32_t crc32_wait; /* crc32 we must obtain after decompress all */
- uint64_t rest_read_compressed; /* number of byte to be decompressed */
- uint64_t rest_read_uncompressed; /* number of byte to be obtained after decomp */
-
- zlib_filefunc64_32_def z_filefunc;
-
- voidpf filestream; /* io structore of the zipfile */
- uint16_t compression_method; /* compression method (0==store) */
- uint64_t byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx) */
- int raw;
-} file_in_zip64_read_info_s;
-
-/* unz64_s contain internal information about the zipfile */
-typedef struct
-{
- zlib_filefunc64_32_def z_filefunc;
-
- voidpf filestream; /* io structure of the current zipfile */
- voidpf filestream_with_CD; /* io structure of the disk with the central directory */
-
- unz_global_info64 gi; /* public global information */
-
- uint64_t byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx) */
- uint64_t num_file; /* number of the current file in the zipfile */
- uint64_t pos_in_central_dir; /* pos of the current file in the central dir */
- uint64_t current_file_ok; /* flag about the usability of the current file */
- uint64_t central_pos; /* position of the beginning of the central dir */
- uint32_t number_disk; /* number of the current disk, used for spanning ZIP */
- uint64_t size_central_dir; /* size of the central directory */
- uint64_t offset_central_dir; /* offset of start of central directory with
- respect to the starting disk number */
-
- unz_file_info64 cur_file_info; /* public info about the current file in zip*/
- unz_file_info64_internal cur_file_info_internal;
- /* private info about it*/
- file_in_zip64_read_info_s *pfile_in_zip_read;
- /* structure about the current file if we are decompressing it */
- int is_zip64; /* is the current file zip64 */
-#ifndef NOUNCRYPT
- uint32_t keys[3]; /* keys defining the pseudo-random sequence */
- const z_crc_t *pcrc_32_tab;
-#endif
-} unz64_s;
-
-/* Read a byte from a gz_stream; Return EOF for end of file. */
-static int unzReadUInt8(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint8_t *value)
-{
- uint8_t c = 0;
- if (ZREAD64(*pzlib_filefunc_def, filestream, &c, 1) == 1)
- {
- *value = (uint8_t)c;
- return UNZ_OK;
- }
- *value = 0;
- if (ZERROR64(*pzlib_filefunc_def, filestream))
- return UNZ_ERRNO;
- return UNZ_EOF;
-}
-
-static int unzReadUInt16(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint16_t *value)
-{
- uint16_t x;
- uint8_t c = 0;
- int err = UNZ_OK;
-
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
- x = (uint16_t)c;
- if (err == UNZ_OK)
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
- x |= ((uint16_t)c) << 8;
-
- if (err == UNZ_OK)
- *value = x;
- else
- *value = 0;
- return err;
-}
-
-static int unzReadUInt32(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint32_t *value)
-{
- uint32_t x = 0;
- uint8_t c = 0;
- int err = UNZ_OK;
-
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
- x = (uint32_t)c;
- if (err == UNZ_OK)
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
- x |= ((uint32_t)c) << 8;
- if (err == UNZ_OK)
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
- x |= ((uint32_t)c) << 16;
- if (err == UNZ_OK)
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
- x += ((uint32_t)c) << 24;
-
- if (err == UNZ_OK)
- *value = x;
- else
- *value = 0;
- return err;
-}
-
-static int unzReadUInt64(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint64_t *value)
-{
- uint64_t x = 0;
- uint8_t i = 0;
- int err = UNZ_OK;
-
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
- x = (uint64_t)i;
- if (err == UNZ_OK)
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
- x |= ((uint64_t)i) << 8;
- if (err == UNZ_OK)
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
- x |= ((uint64_t)i) << 16;
- if (err == UNZ_OK)
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
- x |= ((uint64_t)i) << 24;
- if (err == UNZ_OK)
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
- x |= ((uint64_t)i) << 32;
- if (err == UNZ_OK)
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
- x |= ((uint64_t)i) << 40;
- if (err == UNZ_OK)
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
- x |= ((uint64_t)i) << 48;
- if (err == UNZ_OK)
- err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
- x |= ((uint64_t)i) << 56;
-
- if (err == UNZ_OK)
- *value = x;
- else
- *value = 0;
- return err;
-}
-
-/* Locate the Central directory of a zip file (at the end, just before the global comment) */
-static uint64_t unzSearchCentralDir(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream)
-{
- uint8_t buf[BUFREADCOMMENT + 4];
- uint64_t file_size = 0;
- uint64_t back_read = 4;
- uint64_t max_back = UINT16_MAX; /* maximum size of global comment */
- uint64_t pos_found = 0;
- uint32_t read_size = 0;
- uint64_t read_pos = 0;
- uint32_t i = 0;
-
- if (ZSEEK64(*pzlib_filefunc_def, filestream, 0, ZLIB_FILEFUNC_SEEK_END) != 0)
- return 0;
-
- file_size = ZTELL64(*pzlib_filefunc_def, filestream);
-
- if (max_back > file_size)
- max_back = file_size;
-
- while (back_read < max_back)
- {
- if (back_read + BUFREADCOMMENT > max_back)
- back_read = max_back;
- else
- back_read += BUFREADCOMMENT;
-
- read_pos = file_size - back_read;
- read_size = ((BUFREADCOMMENT + 4) < (file_size - read_pos)) ?
- (BUFREADCOMMENT + 4) : (uint32_t)(file_size - read_pos);
-
- if (ZSEEK64(*pzlib_filefunc_def, filestream, read_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
- break;
- if (ZREAD64(*pzlib_filefunc_def, filestream, buf, read_size) != read_size)
- break;
-
- for (i = read_size - 3; (i--) > 0;)
- if (((*(buf+i)) == (ENDHEADERMAGIC & 0xff)) &&
- ((*(buf+i+1)) == (ENDHEADERMAGIC >> 8 & 0xff)) &&
- ((*(buf+i+2)) == (ENDHEADERMAGIC >> 16 & 0xff)) &&
- ((*(buf+i+3)) == (ENDHEADERMAGIC >> 24 & 0xff)))
- {
- pos_found = read_pos+i;
- break;
- }
-
- if (pos_found != 0)
- break;
- }
-
- return pos_found;
-}
-
-/* Locate the Central directory 64 of a zipfile (at the end, just before the global comment) */
-static uint64_t unzSearchCentralDir64(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream,
- const uint64_t endcentraloffset)
-{
- uint64_t offset = 0;
- uint32_t value32 = 0;
-
- /* Zip64 end of central directory locator */
- if (ZSEEK64(*pzlib_filefunc_def, filestream, endcentraloffset - SIZECENTRALHEADERLOCATOR, ZLIB_FILEFUNC_SEEK_SET) != 0)
- return 0;
-
- /* Read locator signature */
- if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
- return 0;
- if (value32 != ZIP64ENDLOCHEADERMAGIC)
- return 0;
- /* Number of the disk with the start of the zip64 end of central directory */
- if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
- return 0;
- /* Relative offset of the zip64 end of central directory record */
- if (unzReadUInt64(pzlib_filefunc_def, filestream, &offset) != UNZ_OK)
- return 0;
- /* Total number of disks */
- if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
- return 0;
- /* Goto end of central directory record */
- if (ZSEEK64(*pzlib_filefunc_def, filestream, offset, ZLIB_FILEFUNC_SEEK_SET) != 0)
- return 0;
- /* The signature */
- if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
- return 0;
- if (value32 != ZIP64ENDHEADERMAGIC)
- return 0;
-
- return offset;
-}
-
-static unzFile unzOpenInternal(const void *path, zlib_filefunc64_32_def *pzlib_filefunc64_32_def)
-{
- unz64_s us;
- unz64_s *s = NULL;
- uint64_t central_pos = 0;
- uint64_t central_pos64 = 0;
- uint64_t number_entry_CD = 0;
- uint16_t value16 = 0;
- uint32_t value32 = 0;
- uint64_t value64 = 0;
- voidpf filestream = NULL;
- int err = UNZ_OK;
-
- if (unz_copyright[0] != ' ')
- return NULL;
-
- us.filestream = NULL;
- us.filestream_with_CD = NULL;
- us.z_filefunc.zseek32_file = NULL;
- us.z_filefunc.ztell32_file = NULL;
-
- if (pzlib_filefunc64_32_def == NULL)
- fill_fopen64_filefunc(&us.z_filefunc.zfile_func64);
- else
- us.z_filefunc = *pzlib_filefunc64_32_def;
-
- us.filestream = ZOPEN64(us.z_filefunc, path, ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_EXISTING);
-
- if (us.filestream == NULL)
- return NULL;
-
- us.filestream_with_CD = us.filestream;
- us.is_zip64 = 0;
-
- /* Search for end of central directory header */
- central_pos = unzSearchCentralDir(&us.z_filefunc, us.filestream);
- if (central_pos)
- {
- if (ZSEEK64(us.z_filefunc, us.filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
- err = UNZ_ERRNO;
-
- /* The signature, already checked */
- if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
- err = UNZ_ERRNO;
- /* Number of this disk */
- if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
- err = UNZ_ERRNO;
- us.number_disk = value16;
- /* Number of the disk with the start of the central directory */
- if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
- err = UNZ_ERRNO;
- us.gi.number_disk_with_CD = value16;
- /* Total number of entries in the central directory on this disk */
- if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
- err = UNZ_ERRNO;
- us.gi.number_entry = value16;
- /* Total number of entries in the central directory */
- if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
- err = UNZ_ERRNO;
- number_entry_CD = value16;
- if (number_entry_CD != us.gi.number_entry)
- err = UNZ_BADZIPFILE;
- /* Size of the central directory */
- if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
- err = UNZ_ERRNO;
- us.size_central_dir = value32;
- /* Offset of start of central directory with respect to the starting disk number */
- if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
- err = UNZ_ERRNO;
- us.offset_central_dir = value32;
- /* Zipfile comment length */
- if (unzReadUInt16(&us.z_filefunc, us.filestream, &us.gi.size_comment) != UNZ_OK)
- err = UNZ_ERRNO;
-
- if (err == UNZ_OK)
- {
- /* Search for Zip64 end of central directory header */
- central_pos64 = unzSearchCentralDir64(&us.z_filefunc, us.filestream, central_pos);
- if (central_pos64)
- {
- central_pos = central_pos64;
- us.is_zip64 = 1;
-
- if (ZSEEK64(us.z_filefunc, us.filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
- err = UNZ_ERRNO;
-
- /* the signature, already checked */
- if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
- err = UNZ_ERRNO;
- /* size of zip64 end of central directory record */
- if (unzReadUInt64(&us.z_filefunc, us.filestream, &value64) != UNZ_OK)
- err = UNZ_ERRNO;
- /* version made by */
- if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
- err = UNZ_ERRNO;
- /* version needed to extract */
- if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
- err = UNZ_ERRNO;
- /* number of this disk */
- if (unzReadUInt32(&us.z_filefunc, us.filestream, &us.number_disk) != UNZ_OK)
- err = UNZ_ERRNO;
- /* number of the disk with the start of the central directory */
- if (unzReadUInt32(&us.z_filefunc, us.filestream, &us.gi.number_disk_with_CD) != UNZ_OK)
- err = UNZ_ERRNO;
- /* total number of entries in the central directory on this disk */
- if (unzReadUInt64(&us.z_filefunc, us.filestream, &us.gi.number_entry) != UNZ_OK)
- err = UNZ_ERRNO;
- /* total number of entries in the central directory */
- if (unzReadUInt64(&us.z_filefunc, us.filestream, &number_entry_CD) != UNZ_OK)
- err = UNZ_ERRNO;
- if (number_entry_CD != us.gi.number_entry)
- err = UNZ_BADZIPFILE;
- /* size of the central directory */
- if (unzReadUInt64(&us.z_filefunc, us.filestream, &us.size_central_dir) != UNZ_OK)
- err = UNZ_ERRNO;
- /* offset of start of central directory with respect to the starting disk number */
- if (unzReadUInt64(&us.z_filefunc, us.filestream, &us.offset_central_dir) != UNZ_OK)
- err = UNZ_ERRNO;
- }
- else if ((us.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 = 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 _WIN32
-# pragma warning(pop)
-#endif // _WIN32 \ No newline at end of file
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-26 01:36:14 +0000