+/* unzip.c -- IO for uncompress .zip files using zlib
+ Version 1.2.0, September 16th, 2017
+ part of the MiniZip project
+
+ Copyright (C) 2010-2017 Nathan Moinvaziri
+ Modifications for AES, PKWARE disk spanning
+ https://github.com/nmoinvaz/minizip
+ Copyright (C) 2009-2010 Mathias Svensson
+ Modifications for Zip64 support on both zip and unzip
+ http://result42.com
+ Copyright (C) 2007-2008 Even Rouault
+ Modifications of Unzip for Zip64
+ Copyright (C) 1998-2010 Gilles Vollant
+ http://www.winimage.com/zLibDll/minizip.html
+
+ This program is distributed under the terms of the same license as zlib.
+ See the accompanying LICENSE file for the full text of the license.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+#include <limits.h>
+
+#define NOUNCRYPT
+
+#include "zlib.h"
+#include "unzip.h"
+
+#ifdef HAVE_AES
+# define AES_METHOD (99)
+# define AES_PWVERIFYSIZE (2)
+# define AES_MAXSALTLENGTH (16)
+# define AES_AUTHCODESIZE (10)
+# define AES_HEADERSIZE (11)
+# define AES_KEYSIZE(mode) (64 + (mode * 64))
+
+# include "aes/aes.h"
+# include "aes/fileenc.h"
+#endif
+#ifdef HAVE_APPLE_COMPRESSION
+# include <compression.h>
+#endif
+
+#ifndef NOUNCRYPT
+# include "crypt.h"
+#endif
+
+#define DISKHEADERMAGIC (0x08074b50)
+#define LOCALHEADERMAGIC (0x04034b50)
+#define CENTRALHEADERMAGIC (0x02014b50)
+#define ENDHEADERMAGIC (0x06054b50)
+#define ZIP64ENDHEADERMAGIC (0x06064b50)
+#define ZIP64ENDLOCHEADERMAGIC (0x07064b50)
+
+#define SIZECENTRALDIRITEM (0x2e)
+#define SIZECENTRALHEADERLOCATOR (0x14)
+#define SIZEZIPLOCALHEADER (0x1e)
+
+#ifndef BUFREADCOMMENT
+# define BUFREADCOMMENT (0x400)
+#endif
+
+#ifndef UNZ_BUFSIZE
+# define UNZ_BUFSIZE (UINT16_MAX)
+#endif
+#ifndef UNZ_MAXFILENAMEINZIP
+# define UNZ_MAXFILENAMEINZIP (256)
+#endif
+
+#ifndef ALLOC
+# define ALLOC(size) (malloc(size))
+#endif
+#ifndef TRYFREE
+# define TRYFREE(p) {if (p) free(p);}
+#endif
+
+const char unz_copyright[] = " unzip 1.2.0 Copyright 1998-2017 - https://github.com/nmoinvaz/minizip";
+
+/* unz_file_info_internal contain internal info about a file in zipfile*/
+typedef struct unz_file_info64_internal_s
+{
+ uint64_t offset_curfile; /* relative offset of local header 8 bytes */
+ uint64_t byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx) */
+#ifdef HAVE_AES
+ uint8_t aes_encryption_mode;
+ uint16_t aes_compression_method;
+ uint16_t aes_version;
+#endif
+} unz_file_info64_internal;
+
+/* file_in_zip_read_info_s contain internal information about a file in zipfile */
+typedef struct
+{
+ uint8_t *read_buffer; /* internal buffer for compressed data */
+ z_stream stream; /* zLib stream structure for inflate */
+#ifdef HAVE_BZIP2
+ bz_stream bstream; /* bzLib stream structure for bziped */
+#endif
+#ifdef HAVE_APPLE_COMPRESSION
+ compression_stream astream; /* libcompression stream structure */
+#endif
+#ifdef HAVE_AES
+ fcrypt_ctx aes_ctx;
+#endif
+ uint64_t pos_in_zipfile; /* position in byte on the zipfile, for fseek */
+ uint8_t stream_initialised; /* flag set if stream structure is initialised */
+
+ uint64_t offset_local_extrafield; /* offset of the local extra field */
+ uint16_t size_local_extrafield; /* size of the local extra field */
+ uint64_t pos_local_extrafield; /* position in the local extra field in read */
+ uint64_t total_out_64;
+
+ uint32_t crc32; /* crc32 of all data uncompressed */
+ uint32_t crc32_expected; /* crc32 we must obtain after decompress all */
+ uint64_t rest_read_compressed; /* number of byte to be decompressed */
+ uint64_t rest_read_uncompressed; /* number of byte to be obtained after decomp */
+
+ zlib_filefunc64_32_def z_filefunc;
+
+ voidpf filestream; /* io structore of the zipfile */
+ uint16_t compression_method; /* compression method (0==store) */
+ uint64_t byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx) */
+ int raw;
+} file_in_zip64_read_info_s;
+
+/* unz64_s contain internal information about the zipfile */
+typedef struct
+{
+ zlib_filefunc64_32_def z_filefunc;
+
+ voidpf filestream; /* io structure of the current zipfile */
+ voidpf filestream_with_CD; /* io structure of the disk with the central directory */
+
+ unz_global_info64 gi; /* public global information */
+
+ uint64_t byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx) */
+ uint64_t num_file; /* number of the current file in the zipfile */
+ uint64_t pos_in_central_dir; /* pos of the current file in the central dir */
+ uint64_t current_file_ok; /* flag about the usability of the current file */
+ uint64_t central_pos; /* position of the beginning of the central dir */
+ uint32_t number_disk; /* number of the current disk, used for spanning ZIP */
+ uint64_t size_central_dir; /* size of the central directory */
+ uint64_t offset_central_dir; /* offset of start of central directory with
+ respect to the starting disk number */
+
+ unz_file_info64 cur_file_info; /* public info about the current file in zip*/
+ unz_file_info64_internal cur_file_info_internal;
+ /* private info about it*/
+ file_in_zip64_read_info_s *pfile_in_zip_read;
+ /* structure about the current file if we are decompressing it */
+ int is_zip64; /* is the current file zip64 */
+#ifndef NOUNCRYPT
+ uint32_t keys[3]; /* keys defining the pseudo-random sequence */
+ const z_crc_t *pcrc_32_tab;
+#endif
+} unz64_internal;
+
+/* Read a byte from a gz_stream; Return EOF for end of file. */
+static int unzReadUInt8(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint8_t *value)
+{
+ uint8_t c = 0;
+ if (ZREAD64(*pzlib_filefunc_def, filestream, &c, 1) == 1)
+ {
+ *value = (uint8_t)c;
+ return UNZ_OK;
+ }
+ *value = 0;
+ if (ZERROR64(*pzlib_filefunc_def, filestream))
+ return UNZ_ERRNO;
+ return UNZ_EOF;
+}
+
+static int unzReadUInt16(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint16_t *value)
+{
+ uint16_t x;
+ uint8_t c = 0;
+ int err = UNZ_OK;
+
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
+ x = (uint16_t)c;
+ if (err == UNZ_OK)
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
+ x |= ((uint16_t)c) << 8;
+
+ if (err == UNZ_OK)
+ *value = x;
+ else
+ *value = 0;
+ return err;
+}
+
+static int unzReadUInt32(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint32_t *value)
+{
+ uint32_t x = 0;
+ uint8_t c = 0;
+ int err = UNZ_OK;
+
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
+ x = (uint32_t)c;
+ if (err == UNZ_OK)
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
+ x |= ((uint32_t)c) << 8;
+ if (err == UNZ_OK)
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
+ x |= ((uint32_t)c) << 16;
+ if (err == UNZ_OK)
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &c);
+ x += ((uint32_t)c) << 24;
+
+ if (err == UNZ_OK)
+ *value = x;
+ else
+ *value = 0;
+ return err;
+}
+
+static int unzReadUInt64(const zlib_filefunc64_32_def *pzlib_filefunc_def, voidpf filestream, uint64_t *value)
+{
+ uint64_t x = 0;
+ uint8_t i = 0;
+ int err = UNZ_OK;
+
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+ x = (uint64_t)i;
+ if (err == UNZ_OK)
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+ x |= ((uint64_t)i) << 8;
+ if (err == UNZ_OK)
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+ x |= ((uint64_t)i) << 16;
+ if (err == UNZ_OK)
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+ x |= ((uint64_t)i) << 24;
+ if (err == UNZ_OK)
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+ x |= ((uint64_t)i) << 32;
+ if (err == UNZ_OK)
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+ x |= ((uint64_t)i) << 40;
+ if (err == UNZ_OK)
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+ x |= ((uint64_t)i) << 48;
+ if (err == UNZ_OK)
+ err = unzReadUInt8(pzlib_filefunc_def, filestream, &i);
+ x |= ((uint64_t)i) << 56;
+
+ if (err == UNZ_OK)
+ *value = x;
+ else
+ *value = 0;
+ return err;
+}
+
+/* Locate the Central directory of a zip file (at the end, just before the global comment) */
+static int unzSearchCentralDir(const zlib_filefunc64_32_def *pzlib_filefunc_def, uint64_t *pos_found, voidpf filestream)
+{
+ uint8_t buf[BUFREADCOMMENT + 4];
+ uint64_t file_size = 0;
+ uint64_t back_read = 4;
+ uint64_t max_back = UINT16_MAX; /* maximum size of global comment */
+ uint32_t read_size = 0;
+ uint64_t read_pos = 0;
+ uint32_t i = 0;
+ *pos_found = 0;
+
+ if (ZSEEK64(*pzlib_filefunc_def, filestream, 0, ZLIB_FILEFUNC_SEEK_END) != 0)
+ return UNZ_ERRNO;
+
+ file_size = ZTELL64(*pzlib_filefunc_def, filestream);
+
+ if (max_back > file_size)
+ max_back = file_size;
+
+ while (back_read < max_back)
+ {
+ if (back_read + BUFREADCOMMENT > max_back)
+ back_read = max_back;
+ else
+ back_read += BUFREADCOMMENT;
+
+ read_pos = file_size - back_read;
+ read_size = ((BUFREADCOMMENT + 4) < (file_size - read_pos)) ?
+ (BUFREADCOMMENT + 4) : (uint32_t)(file_size - read_pos);
+
+ if (ZSEEK64(*pzlib_filefunc_def, filestream, read_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
+ break;
+ if (ZREAD64(*pzlib_filefunc_def, filestream, buf, read_size) != read_size)
+ break;
+
+ for (i = read_size - 3; (i--) > 0;)
+ if (((*(buf+i)) == (ENDHEADERMAGIC & 0xff)) &&
+ ((*(buf+i+1)) == (ENDHEADERMAGIC >> 8 & 0xff)) &&
+ ((*(buf+i+2)) == (ENDHEADERMAGIC >> 16 & 0xff)) &&
+ ((*(buf+i+3)) == (ENDHEADERMAGIC >> 24 & 0xff)))
+ {
+ *pos_found = read_pos+i;
+ return UNZ_OK;
+ }
+ }
+
+ return UNZ_ERRNO;
+}
+
+/* Locate the Central directory 64 of a zipfile (at the end, just before the global comment) */
+static int unzSearchCentralDir64(const zlib_filefunc64_32_def *pzlib_filefunc_def, uint64_t *offset, voidpf filestream,
+ const uint64_t endcentraloffset)
+{
+ uint32_t value32 = 0;
+ *offset = 0;
+
+ /* Zip64 end of central directory locator */
+ if (ZSEEK64(*pzlib_filefunc_def, filestream, endcentraloffset - SIZECENTRALHEADERLOCATOR, ZLIB_FILEFUNC_SEEK_SET) != 0)
+ return UNZ_ERRNO;
+
+ /* Read locator signature */
+ if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
+ return UNZ_ERRNO;
+ if (value32 != ZIP64ENDLOCHEADERMAGIC)
+ return UNZ_ERRNO;
+ /* Number of the disk with the start of the zip64 end of central directory */
+ if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
+ return UNZ_ERRNO;
+ /* Relative offset of the zip64 end of central directory record */
+ if (unzReadUInt64(pzlib_filefunc_def, filestream, offset) != UNZ_OK)
+ return UNZ_ERRNO;
+ /* Total number of disks */
+ if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
+ return UNZ_ERRNO;
+ /* Goto end of central directory record */
+ if (ZSEEK64(*pzlib_filefunc_def, filestream, *offset, ZLIB_FILEFUNC_SEEK_SET) != 0)
+ return UNZ_ERRNO;
+ /* The signature */
+ if (unzReadUInt32(pzlib_filefunc_def, filestream, &value32) != UNZ_OK)
+ return UNZ_ERRNO;
+ if (value32 != ZIP64ENDHEADERMAGIC)
+ return UNZ_ERRNO;
+
+ return UNZ_OK;
+}
+
+static unzFile unzOpenInternal(const void *path, zlib_filefunc64_32_def *pzlib_filefunc64_32_def)
+{
+ unz64_internal us = {{{ 0 }}}; // (prevent warning from GCC bug 53119)
+ unz64_internal *s = NULL;
+ uint64_t central_pos = 0;
+ uint64_t central_pos64 = 0;
+ uint64_t number_entry_CD = 0;
+ uint16_t value16 = 0;
+ uint32_t value32 = 0;
+ uint64_t value64 = 0;
+ voidpf filestream = NULL;
+ int err = UNZ_OK;
+ int err64 = UNZ_OK;
+
+ if (pzlib_filefunc64_32_def == NULL)
+ fill_fopen64_filefunc(&us.z_filefunc.zfile_func64);
+ else
+ {
+ assert((pzlib_filefunc64_32_def->zopen32_file || pzlib_filefunc64_32_def->zfile_func64.zopen64_file) &&
+ (pzlib_filefunc64_32_def->zopendisk32_file || pzlib_filefunc64_32_def->zfile_func64.zopendisk64_file) &&
+ (pzlib_filefunc64_32_def->ztell32_file || pzlib_filefunc64_32_def->zfile_func64.ztell64_file) &&
+ (pzlib_filefunc64_32_def->zseek32_file || pzlib_filefunc64_32_def->zfile_func64.zseek64_file));
+ us.z_filefunc = *pzlib_filefunc64_32_def;
+ }
+
+ us.filestream = ZOPEN64(us.z_filefunc, path, ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_EXISTING);
+
+ if (us.filestream == NULL)
+ return NULL;
+
+ us.filestream_with_CD = us.filestream;
+
+ /* Search for end of central directory header */
+ err = unzSearchCentralDir(&us.z_filefunc, ¢ral_pos, us.filestream);
+ if (err == UNZ_OK)
+ {
+ if (ZSEEK64(us.z_filefunc, us.filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
+ err = UNZ_ERRNO;
+
+ /* The signature, already checked */
+ if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
+ err = UNZ_ERRNO;
+ /* Number of this disk */
+ if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
+ err = UNZ_ERRNO;
+ us.number_disk = value16;
+ /* Number of the disk with the start of the central directory */
+ if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
+ err = UNZ_ERRNO;
+ us.gi.number_disk_with_CD = value16;
+ /* Total number of entries in the central directory on this disk */
+ if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
+ err = UNZ_ERRNO;
+ us.gi.number_entry = value16;
+ /* Total number of entries in the central directory */
+ if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
+ err = UNZ_ERRNO;
+ number_entry_CD = value16;
+ if (number_entry_CD != us.gi.number_entry)
+ err = UNZ_BADZIPFILE;
+ /* Size of the central directory */
+ if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
+ err = UNZ_ERRNO;
+ us.size_central_dir = value32;
+ /* Offset of start of central directory with respect to the starting disk number */
+ if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
+ err = UNZ_ERRNO;
+ us.offset_central_dir = value32;
+ /* Zipfile comment length */
+ if (unzReadUInt16(&us.z_filefunc, us.filestream, &us.gi.size_comment) != UNZ_OK)
+ err = UNZ_ERRNO;
+
+ if (err == UNZ_OK)
+ {
+ /* Search for Zip64 end of central directory header */
+ err64 = unzSearchCentralDir64(&us.z_filefunc, ¢ral_pos64, us.filestream, central_pos);
+ if (err64 == UNZ_OK)
+ {
+ central_pos = central_pos64;
+ us.is_zip64 = 1;
+
+ if (ZSEEK64(us.z_filefunc, us.filestream, central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
+ err = UNZ_ERRNO;
+
+ /* the signature, already checked */
+ if (unzReadUInt32(&us.z_filefunc, us.filestream, &value32) != UNZ_OK)
+ err = UNZ_ERRNO;
+ /* size of zip64 end of central directory record */
+ if (unzReadUInt64(&us.z_filefunc, us.filestream, &value64) != UNZ_OK)
+ err = UNZ_ERRNO;
+ /* version made by */
+ if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
+ err = UNZ_ERRNO;
+ /* version needed to extract */
+ if (unzReadUInt16(&us.z_filefunc, us.filestream, &value16) != UNZ_OK)
+ err = UNZ_ERRNO;
+ /* number of this disk */
+ if (unzReadUInt32(&us.z_filefunc, us.filestream, &us.number_disk) != UNZ_OK)
+ err = UNZ_ERRNO;
+ /* number of the disk with the start of the central directory */
+ if (unzReadUInt32(&us.z_filefunc, us.filestream, &us.gi.number_disk_with_CD) != UNZ_OK)
+ err = UNZ_ERRNO;
+ /* total number of entries in the central directory on this disk */
+ if (unzReadUInt64(&us.z_filefunc, us.filestream, &us.gi.number_entry) != UNZ_OK)
+ err = UNZ_ERRNO;
+ /* total number of entries in the central directory */
+ if (unzReadUInt64(&us.z_filefunc, us.filestream, &number_entry_CD) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (number_entry_CD != us.gi.number_entry)
+ err = UNZ_BADZIPFILE;
+ /* size of the central directory */
+ if (unzReadUInt64(&us.z_filefunc, us.filestream, &us.size_central_dir) != UNZ_OK)
+ err = UNZ_ERRNO;
+ /* offset of start of central directory with respect to the starting disk number */
+ if (unzReadUInt64(&us.z_filefunc, us.filestream, &us.offset_central_dir) != UNZ_OK)
+ err = UNZ_ERRNO;
+ }
+ else if ((us.size_central_dir == UINT16_MAX) || (us.offset_central_dir == UINT32_MAX))
+ err = UNZ_BADZIPFILE;
+ }
+ }
+ else
+ err = UNZ_ERRNO;
+
+ if ((err == UNZ_OK) && (central_pos < us.offset_central_dir + us.size_central_dir))
+ err = UNZ_BADZIPFILE;
+
+ if (err != UNZ_OK)
+ {
+ ZCLOSE64(us.z_filefunc, us.filestream);
+ return NULL;
+ }
+
+ if (us.gi.number_disk_with_CD == 0)
+ {
+ /* If there is only one disk open another stream so we don't have to seek between the CD
+ and the file headers constantly */
+ filestream = ZOPEN64(us.z_filefunc, path, ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_EXISTING);
+ if (filestream != NULL)
+ us.filestream = filestream;
+ }
+
+ /* Hack for zip files that have no respect for zip64
+ if ((central_pos > 0xffffffff) && (us.offset_central_dir < 0xffffffff))
+ us.offset_central_dir = central_pos - us.size_central_dir;*/
+
+ us.byte_before_the_zipfile = central_pos - (us.offset_central_dir + us.size_central_dir);
+ us.central_pos = central_pos;
+
+ s = (unz64_internal*)ALLOC(sizeof(unz64_internal));
+ if (s != NULL)
+ {
+ *s = us;
+ if (err64 != UNZ_OK)
+ // workaround incorrect count #184
+ s->gi.number_entry = unzCountEntries(s);
+
+ unzGoToFirstFile((unzFile)s);
+ }
+ return (unzFile)s;
+}
+
+extern unzFile ZEXPORT unzOpen2(const char *path, zlib_filefunc_def *pzlib_filefunc32_def)
+{
+ if (pzlib_filefunc32_def != NULL)
+ {
+ zlib_filefunc64_32_def zlib_filefunc64_32_def_fill = {{ 0 }};
+ fill_zlib_filefunc64_32_def_from_filefunc32(&zlib_filefunc64_32_def_fill, pzlib_filefunc32_def);
+ return unzOpenInternal(path, &zlib_filefunc64_32_def_fill);
+ }
+ return unzOpenInternal(path, NULL);
+}
+
+extern unzFile ZEXPORT unzOpen2_64(const void *path, zlib_filefunc64_def *pzlib_filefunc_def)
+{
+ if (pzlib_filefunc_def != NULL)
+ {
+ zlib_filefunc64_32_def zlib_filefunc64_32_def_fill = {{ 0 }};
+ zlib_filefunc64_32_def_fill.zfile_func64 = *pzlib_filefunc_def;
+ return unzOpenInternal(path, &zlib_filefunc64_32_def_fill);
+ }
+ return unzOpenInternal(path, NULL);
+}
+
+extern unzFile ZEXPORT unzOpen(const char *path)
+{
+ return unzOpenInternal(path, NULL);
+}
+
+extern unzFile ZEXPORT unzOpen64(const void *path)
+{
+ return unzOpenInternal(path, NULL);
+}
+
+extern int ZEXPORT unzClose(unzFile file)
+{
+ unz64_internal *s;
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+
+ if (s->pfile_in_zip_read != NULL)
+ unzCloseCurrentFile(file);
+
+ if ((s->filestream != NULL) && (s->filestream != s->filestream_with_CD))
+ ZCLOSE64(s->z_filefunc, s->filestream);
+ if (s->filestream_with_CD != NULL)
+ ZCLOSE64(s->z_filefunc, s->filestream_with_CD);
+
+ s->filestream = NULL;
+ s->filestream_with_CD = NULL;
+ TRYFREE(s);
+ return UNZ_OK;
+}
+
+/* Goto to the next available disk for spanned archives */
+static int unzGoToNextDisk(unzFile file)
+{
+ unz64_internal *s;
+ uint32_t number_disk_next = 0;
+
+ s = (unz64_internal*)file;
+ if (s == NULL)
+ return UNZ_PARAMERROR;
+ number_disk_next = s->number_disk;
+
+ if ((s->pfile_in_zip_read != NULL) && (s->pfile_in_zip_read->rest_read_uncompressed > 0))
+ /* We are currently reading a file and we need the next sequential disk */
+ number_disk_next += 1;
+ else
+ /* Goto the disk for the current file */
+ number_disk_next = s->cur_file_info.disk_num_start;
+
+ if (number_disk_next != s->number_disk)
+ {
+ /* Switch disks */
+ if ((s->filestream != NULL) && (s->filestream != s->filestream_with_CD))
+ ZCLOSE64(s->z_filefunc, s->filestream);
+
+ if (number_disk_next == s->gi.number_disk_with_CD)
+ {
+ s->filestream = s->filestream_with_CD;
+ }
+ else
+ {
+ s->filestream = ZOPENDISK64(s->z_filefunc, s->filestream_with_CD, number_disk_next,
+ ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_EXISTING);
+ }
+
+ if (s->filestream == NULL)
+ return UNZ_ERRNO;
+
+ s->number_disk = number_disk_next;
+ }
+
+ return UNZ_OK;
+}
+
+extern int ZEXPORT unzGetGlobalInfo(unzFile file, unz_global_info* pglobal_info32)
+{
+ unz64_internal *s = NULL;
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+
+ pglobal_info32->number_entry = (uint32_t)s->gi.number_entry;
+ pglobal_info32->size_comment = s->gi.size_comment;
+ pglobal_info32->number_disk_with_CD = s->gi.number_disk_with_CD;
+ return UNZ_OK;
+}
+
+extern int ZEXPORT unzGetGlobalInfo64(unzFile file, unz_global_info64 *pglobal_info)
+{
+ unz64_internal *s = NULL;
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+ *pglobal_info = s->gi;
+ return UNZ_OK;
+}
+
+extern int ZEXPORT unzGetGlobalComment(unzFile file, char *comment, uint16_t comment_size)
+{
+ unz64_internal *s = NULL;
+ uint16_t bytes_to_read = comment_size;
+ if (file == NULL)
+ return (int)UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+
+ if (bytes_to_read > s->gi.size_comment)
+ bytes_to_read = s->gi.size_comment;
+
+ if (ZSEEK64(s->z_filefunc, s->filestream_with_CD, s->central_pos + 22, ZLIB_FILEFUNC_SEEK_SET) != 0)
+ return UNZ_ERRNO;
+
+ if (bytes_to_read > 0)
+ {
+ *comment = 0;
+ if (ZREAD64(s->z_filefunc, s->filestream_with_CD, comment, bytes_to_read) != bytes_to_read)
+ return UNZ_ERRNO;
+ }
+
+ if ((comment != NULL) && (comment_size > s->gi.size_comment))
+ *(comment + s->gi.size_comment) = 0;
+
+ return (int)bytes_to_read;
+}
+
+static int unzGetCurrentFileInfoField(unzFile file, uint32_t *seek, void *field, uint16_t field_size, uint16_t size_file_field, int null_terminated_field)
+{
+ unz64_internal *s = NULL;
+ uint32_t bytes_to_read = 0;
+ int err = UNZ_OK;
+
+ if (file == NULL)
+ return (int)UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+
+ /* Read field */
+ if (field != NULL)
+ {
+ if (size_file_field < field_size)
+ {
+ if (null_terminated_field)
+ *((char *)field+size_file_field) = 0;
+
+ bytes_to_read = size_file_field;
+ }
+ else
+ bytes_to_read = field_size;
+
+ if (*seek != 0)
+ {
+ if (ZSEEK64(s->z_filefunc, s->filestream_with_CD, *seek, ZLIB_FILEFUNC_SEEK_CUR) == 0)
+ *seek = 0;
+ else
+ err = UNZ_ERRNO;
+ }
+
+ if ((size_file_field > 0) && (field_size > 0))
+ {
+ if (ZREAD64(s->z_filefunc, s->filestream_with_CD, field, bytes_to_read) != bytes_to_read)
+ err = UNZ_ERRNO;
+ }
+ *seek += size_file_field - bytes_to_read;
+ }
+ else
+ {
+ *seek += size_file_field;
+ }
+
+ return err;
+}
+
+/* Get info about the current file in the zipfile, with internal only info */
+static int unzGetCurrentFileInfoInternal(unzFile file, unz_file_info64 *pfile_info,
+ unz_file_info64_internal *pfile_info_internal, char *filename, uint16_t filename_size, void *extrafield,
+ uint16_t extrafield_size, char *comment, uint16_t comment_size)
+{
+ unz64_internal *s = NULL;
+ unz_file_info64 file_info;
+ unz_file_info64_internal file_info_internal;
+ uint32_t magic = 0;
+ uint64_t current_pos = 0;
+ uint32_t seek = 0;
+ uint32_t extra_pos = 0;
+ uint16_t extra_header_id = 0;
+ uint16_t extra_data_size = 0;
+ uint16_t value16 = 0;
+ uint32_t value32 = 0;
+ uint64_t value64 = 0;
+ int err = UNZ_OK;
+
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+
+ if (ZSEEK64(s->z_filefunc, s->filestream_with_CD,
+ s->pos_in_central_dir + s->byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET) != 0)
+ err = UNZ_ERRNO;
+
+ /* Check the magic */
+ if (err == UNZ_OK)
+ {
+ if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &magic) != UNZ_OK)
+ err = UNZ_ERRNO;
+ else if (magic != CENTRALHEADERMAGIC)
+ err = UNZ_BADZIPFILE;
+ }
+
+ /* Read central directory header */
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.version) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.version_needed) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.flag) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.compression_method) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &file_info.dos_date) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &file_info.crc) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &value32) != UNZ_OK)
+ err = UNZ_ERRNO;
+ file_info.compressed_size = value32;
+ if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &value32) != UNZ_OK)
+ err = UNZ_ERRNO;
+ file_info.uncompressed_size = value32;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.size_filename) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.size_file_extra) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.size_file_comment) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &value16) != UNZ_OK)
+ err = UNZ_ERRNO;
+ file_info.disk_num_start = value16;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &file_info.internal_fa) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &file_info.external_fa) != UNZ_OK)
+ err = UNZ_ERRNO;
+ /* Relative offset of local header */
+ if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &value32) != UNZ_OK)
+ err = UNZ_ERRNO;
+
+ file_info.size_file_extra_internal = 0;
+ file_info.disk_offset = value32;
+ file_info_internal.offset_curfile = value32;
+#ifdef HAVE_AES
+ file_info_internal.aes_compression_method = 0;
+ file_info_internal.aes_encryption_mode = 0;
+ file_info_internal.aes_version = 0;
+#endif
+
+ if (err == UNZ_OK)
+ err = unzGetCurrentFileInfoField(file, &seek, filename, filename_size, file_info.size_filename, 1);
+
+ /* Read extrafield */
+ if (err == UNZ_OK)
+ err = unzGetCurrentFileInfoField(file, &seek, extrafield, extrafield_size, file_info.size_file_extra, 0);
+
+ if ((err == UNZ_OK) && (file_info.size_file_extra != 0))
+ {
+ if (seek != 0)
+ {
+ if (ZSEEK64(s->z_filefunc, s->filestream_with_CD, seek, ZLIB_FILEFUNC_SEEK_CUR) == 0)
+ seek = 0;
+ else
+ err = UNZ_ERRNO;
+ }
+
+ /* We are going to parse the extra field so we need to move back */
+ current_pos = ZTELL64(s->z_filefunc, s->filestream_with_CD);
+ if (current_pos < file_info.size_file_extra)
+ err = UNZ_ERRNO;
+ current_pos -= file_info.size_file_extra;
+ if (ZSEEK64(s->z_filefunc, s->filestream_with_CD, current_pos, ZLIB_FILEFUNC_SEEK_SET) != 0)
+ err = UNZ_ERRNO;
+
+ while ((err != UNZ_ERRNO) && (extra_pos < file_info.size_file_extra))
+ {
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &extra_header_id) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &extra_data_size) != UNZ_OK)
+ err = UNZ_ERRNO;
+
+ /* ZIP64 extra fields */
+ if (extra_header_id == 0x0001)
+ {
+ /* Subtract size of ZIP64 field, since ZIP64 is handled internally */
+ file_info.size_file_extra_internal += 2 + 2 + extra_data_size;
+
+ if (file_info.uncompressed_size == UINT32_MAX)
+ {
+ if (unzReadUInt64(&s->z_filefunc, s->filestream_with_CD, &file_info.uncompressed_size) != UNZ_OK)
+ err = UNZ_ERRNO;
+ }
+ if (file_info.compressed_size == UINT32_MAX)
+ {
+ if (unzReadUInt64(&s->z_filefunc, s->filestream_with_CD, &file_info.compressed_size) != UNZ_OK)
+ err = UNZ_ERRNO;
+ }
+ if (file_info_internal.offset_curfile == UINT32_MAX)
+ {
+ /* Relative Header offset */
+ if (unzReadUInt64(&s->z_filefunc, s->filestream_with_CD, &value64) != UNZ_OK)
+ err = UNZ_ERRNO;
+ file_info_internal.offset_curfile = value64;
+ file_info.disk_offset = value64;
+ }
+ if (file_info.disk_num_start == UINT32_MAX)
+ {
+ /* Disk Start Number */
+ if (unzReadUInt32(&s->z_filefunc, s->filestream_with_CD, &file_info.disk_num_start) != UNZ_OK)
+ err = UNZ_ERRNO;
+ }
+ }
+#ifdef HAVE_AES
+ /* AES header */
+ else if (extra_header_id == 0x9901)
+ {
+ uint8_t value8 = 0;
+
+ /* Subtract size of AES field, since AES is handled internally */
+ file_info.size_file_extra_internal += 2 + 2 + extra_data_size;
+
+ /* Verify version info */
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &value16) != UNZ_OK)
+ err = UNZ_ERRNO;
+ /* Support AE-1 and AE-2 */
+ if (value16 != 1 && value16 != 2)
+ err = UNZ_ERRNO;
+ file_info_internal.aes_version = value16;
+ if (unzReadUInt8(&s->z_filefunc, s->filestream_with_CD, &value8) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if ((char)value8 != 'A')
+ err = UNZ_ERRNO;
+ if (unzReadUInt8(&s->z_filefunc, s->filestream_with_CD, &value8) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if ((char)value8 != 'E')
+ err = UNZ_ERRNO;
+ /* Get AES encryption strength and actual compression method */
+ if (unzReadUInt8(&s->z_filefunc, s->filestream_with_CD, &value8) != UNZ_OK)
+ err = UNZ_ERRNO;
+ file_info_internal.aes_encryption_mode = value8;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream_with_CD, &value16) != UNZ_OK)
+ err = UNZ_ERRNO;
+ file_info_internal.aes_compression_method = value16;
+ }
+#endif
+ else
+ {
+ if (ZSEEK64(s->z_filefunc, s->filestream_with_CD, extra_data_size, ZLIB_FILEFUNC_SEEK_CUR) != 0)
+ err = UNZ_ERRNO;
+ }
+
+ extra_pos += 2 + 2 + extra_data_size;
+ }
+ }
+
+ if (file_info.disk_num_start == s->gi.number_disk_with_CD)
+ file_info_internal.byte_before_the_zipfile = s->byte_before_the_zipfile;
+ else
+ file_info_internal.byte_before_the_zipfile = 0;
+
+ if (err == UNZ_OK)
+ err = unzGetCurrentFileInfoField(file, &seek, comment, comment_size, file_info.size_file_comment, 1);
+
+ if ((err == UNZ_OK) && (pfile_info != NULL))
+ *pfile_info = file_info;
+ if ((err == UNZ_OK) && (pfile_info_internal != NULL))
+ *pfile_info_internal = file_info_internal;
+
+ return err;
+}
+
+extern int ZEXPORT unzGetCurrentFileInfo(unzFile file, unz_file_info *pfile_info, char *filename,
+ uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size)
+{
+ unz_file_info64 file_info64;
+ int err = UNZ_OK;
+
+ err = unzGetCurrentFileInfoInternal(file, &file_info64, NULL, filename, filename_size,
+ extrafield, extrafield_size, comment, comment_size);
+
+ if ((err == UNZ_OK) && (pfile_info != NULL))
+ {
+ pfile_info->version = file_info64.version;
+ pfile_info->version_needed = file_info64.version_needed;
+ pfile_info->flag = file_info64.flag;
+ pfile_info->compression_method = file_info64.compression_method;
+ pfile_info->dos_date = file_info64.dos_date;
+ pfile_info->crc = file_info64.crc;
+
+ pfile_info->size_filename = file_info64.size_filename;
+ pfile_info->size_file_extra = file_info64.size_file_extra - file_info64.size_file_extra_internal;
+ pfile_info->size_file_comment = file_info64.size_file_comment;
+
+ pfile_info->disk_num_start = (uint16_t)file_info64.disk_num_start;
+ pfile_info->internal_fa = file_info64.internal_fa;
+ pfile_info->external_fa = file_info64.external_fa;
+
+ pfile_info->compressed_size = (uint32_t)file_info64.compressed_size;
+ pfile_info->uncompressed_size = (uint32_t)file_info64.uncompressed_size;
+ }
+ return err;
+}
+
+extern int ZEXPORT unzGetCurrentFileInfo64(unzFile file, unz_file_info64 * pfile_info, char *filename,
+ uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size)
+{
+ return unzGetCurrentFileInfoInternal(file, pfile_info, NULL, filename, filename_size,
+ extrafield, extrafield_size, comment, comment_size);
+}
+
+/* Read the local header of the current zipfile. Check the coherency of the local header and info in the
+ end of central directory about this file store in *piSizeVar the size of extra info in local header
+ (filename and size of extra field data) */
+static int unzCheckCurrentFileCoherencyHeader(unz64_internal *s, uint32_t *psize_variable, uint64_t *poffset_local_extrafield,
+ uint16_t *psize_local_extrafield)
+{
+ uint32_t magic = 0;
+ uint16_t value16 = 0;
+ uint32_t value32 = 0;
+ uint32_t flags = 0;
+ uint16_t size_filename = 0;
+ uint16_t size_extra_field = 0;
+ uint16_t compression_method = 0;
+ int err = UNZ_OK;
+
+ if (psize_variable == NULL)
+ return UNZ_PARAMERROR;
+ *psize_variable = 0;
+ if (poffset_local_extrafield == NULL)
+ return UNZ_PARAMERROR;
+ *poffset_local_extrafield = 0;
+ if (psize_local_extrafield == NULL)
+ return UNZ_PARAMERROR;
+ *psize_local_extrafield = 0;
+
+ err = unzGoToNextDisk((unzFile)s);
+ if (err != UNZ_OK)
+ return err;
+
+ if (ZSEEK64(s->z_filefunc, s->filestream, s->cur_file_info_internal.offset_curfile +
+ s->cur_file_info_internal.byte_before_the_zipfile, ZLIB_FILEFUNC_SEEK_SET) != 0)
+ return UNZ_ERRNO;
+
+ if (err == UNZ_OK)
+ {
+ if (unzReadUInt32(&s->z_filefunc, s->filestream, &magic) != UNZ_OK)
+ err = UNZ_ERRNO;
+ else if (magic != LOCALHEADERMAGIC)
+ err = UNZ_BADZIPFILE;
+ }
+
+ if (unzReadUInt16(&s->z_filefunc, s->filestream, &value16) != UNZ_OK)
+ err = UNZ_ERRNO;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream, &value16) != UNZ_OK)
+ err = UNZ_ERRNO;
+ flags = value16;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream, &value16) != UNZ_OK)
+ err = UNZ_ERRNO;
+ else if ((err == UNZ_OK) && (value16 != s->cur_file_info.compression_method))
+ err = UNZ_BADZIPFILE;
+
+ compression_method = s->cur_file_info.compression_method;
+#ifdef HAVE_AES
+ if (compression_method == AES_METHOD)
+ compression_method = s->cur_file_info_internal.aes_compression_method;
+#endif
+
+ if ((err == UNZ_OK) && (compression_method != 0) && (compression_method != Z_DEFLATED))
+ {
+#ifdef HAVE_BZIP2
+ if (compression_method != Z_BZIP2ED)
+#endif
+ err = UNZ_BADZIPFILE;
+ }
+
+ if (unzReadUInt32(&s->z_filefunc, s->filestream, &value32) != UNZ_OK) /* date/time */
+ err = UNZ_ERRNO;
+ if (unzReadUInt32(&s->z_filefunc, s->filestream, &value32) != UNZ_OK) /* crc */
+ err = UNZ_ERRNO;
+ else if ((err == UNZ_OK) && (value32 != s->cur_file_info.crc) && ((flags & 8) == 0))
+ err = UNZ_BADZIPFILE;
+ if (unzReadUInt32(&s->z_filefunc, s->filestream, &value32) != UNZ_OK) /* size compr */
+ err = UNZ_ERRNO;
+ else if ((value32 != UINT32_MAX) && (err == UNZ_OK) && (value32 != s->cur_file_info.compressed_size) && ((flags & 8) == 0))
+ err = UNZ_BADZIPFILE;
+ if (unzReadUInt32(&s->z_filefunc, s->filestream, &value32) != UNZ_OK) /* size uncompr */
+ err = UNZ_ERRNO;
+ else if ((value32 != UINT32_MAX) && (err == UNZ_OK) && (value32 != s->cur_file_info.uncompressed_size) && ((flags & 8) == 0))
+ err = UNZ_BADZIPFILE;
+ if (unzReadUInt16(&s->z_filefunc, s->filestream, &size_filename) != UNZ_OK)
+ err = UNZ_ERRNO;
+
+ *psize_variable += size_filename;
+
+ if (unzReadUInt16(&s->z_filefunc, s->filestream, &size_extra_field) != UNZ_OK)
+ err = UNZ_ERRNO;
+
+ *poffset_local_extrafield = s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + size_filename;
+ *psize_local_extrafield = size_extra_field;
+ *psize_variable += size_extra_field;
+
+ return err;
+}
+
+extern uint64_t ZEXPORT unzCountEntries(const unzFile file)
+{
+ if (file == NULL)
+ return 0;
+
+ unz64_internal s = *(unz64_internal*)file;
+
+ s.pos_in_central_dir = s.offset_central_dir;
+ s.num_file = 0;
+ while (UNZ_OK == unzGetCurrentFileInfoInternal(&s,
+ &s.cur_file_info,
+ &s.cur_file_info_internal,
+ NULL, 0, NULL, 0, NULL, 0))
+ {
+ s.pos_in_central_dir += SIZECENTRALDIRITEM
+ + s.cur_file_info.size_filename
+ + s.cur_file_info.size_file_extra
+ + s.cur_file_info.size_file_comment;
+ s.num_file += 1;
+ }
+ return s.num_file;
+}
+
+/*
+ Open for reading data the current file in the zipfile.
+ If there is no error and the file is opened, the return value is UNZ_OK.
+*/
+extern int ZEXPORT unzOpenCurrentFile3(unzFile file, int *method, int *level, int raw, const char *password)
+{
+ unz64_internal *s = NULL;
+ file_in_zip64_read_info_s *pfile_in_zip_read_info = NULL;
+ uint16_t compression_method = 0;
+ uint64_t offset_local_extrafield = 0;
+ uint16_t size_local_extrafield = 0;
+ uint32_t size_variable = 0;
+ int err = UNZ_OK;
+#ifndef NOUNCRYPT
+ char source[12];
+#else
+ if (password != NULL)
+ return UNZ_PARAMERROR;
+#endif
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+ if (!s->current_file_ok)
+ return UNZ_PARAMERROR;
+
+ if (s->pfile_in_zip_read != NULL)
+ unzCloseCurrentFile(file);
+
+ if (unzCheckCurrentFileCoherencyHeader(s, &size_variable, &offset_local_extrafield, &size_local_extrafield) != UNZ_OK)
+ return UNZ_BADZIPFILE;
+
+ compression_method = s->cur_file_info.compression_method;
+#ifdef HAVE_AES
+ if (compression_method == AES_METHOD)
+ {
+ compression_method = s->cur_file_info_internal.aes_compression_method;
+ if (password == NULL)
+ {
+ return UNZ_PARAMERROR;
+ }
+ }
+#endif
+
+ if (method != NULL)
+ *method = compression_method;
+
+ if (level != NULL)
+ {
+ *level = 6;
+ switch (s->cur_file_info.flag & 0x06)
+ {
+ case 6 : *level = 1; break;
+ case 4 : *level = 2; break;
+ case 2 : *level = 9; break;
+ }
+ }
+
+ if ((compression_method != 0) && (compression_method != Z_DEFLATED))
+ {
+#ifdef HAVE_BZIP2
+ if (compression_method != Z_BZIP2ED)
+#endif
+ {
+ return UNZ_BADZIPFILE;
+ }
+ }
+
+ pfile_in_zip_read_info = (file_in_zip64_read_info_s*)ALLOC(sizeof(file_in_zip64_read_info_s));
+ if (pfile_in_zip_read_info == NULL)
+ return UNZ_INTERNALERROR;
+
+ pfile_in_zip_read_info->read_buffer = (uint8_t*)ALLOC(UNZ_BUFSIZE);
+ if (pfile_in_zip_read_info->read_buffer == NULL)
+ {
+ TRYFREE(pfile_in_zip_read_info);
+ return UNZ_INTERNALERROR;
+ }
+
+ pfile_in_zip_read_info->stream_initialised = 0;
+
+ pfile_in_zip_read_info->filestream = s->filestream;
+ pfile_in_zip_read_info->z_filefunc = s->z_filefunc;
+
+ pfile_in_zip_read_info->raw = raw;
+ pfile_in_zip_read_info->crc32 = 0;
+ pfile_in_zip_read_info->crc32_expected = s->cur_file_info.crc;
+ pfile_in_zip_read_info->total_out_64 = 0;
+ pfile_in_zip_read_info->compression_method = compression_method;
+
+ pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield;
+ pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield;
+ pfile_in_zip_read_info->pos_local_extrafield = 0;
+
+ pfile_in_zip_read_info->rest_read_compressed = s->cur_file_info.compressed_size;
+ pfile_in_zip_read_info->rest_read_uncompressed = s->cur_file_info.uncompressed_size;
+ pfile_in_zip_read_info->byte_before_the_zipfile = 0;
+
+ if (s->number_disk == s->gi.number_disk_with_CD)
+ pfile_in_zip_read_info->byte_before_the_zipfile = s->byte_before_the_zipfile;
+
+ pfile_in_zip_read_info->pos_in_zipfile = s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER + size_variable;
+
+ pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
+ pfile_in_zip_read_info->stream.zfree = (free_func)0;
+ pfile_in_zip_read_info->stream.opaque = (voidpf)s;
+ pfile_in_zip_read_info->stream.total_out = 0;
+ pfile_in_zip_read_info->stream.total_in = 0;
+ pfile_in_zip_read_info->stream.next_in = NULL;
+ pfile_in_zip_read_info->stream.avail_in = 0;
+
+ if (!raw)
+ {
+ if (compression_method == Z_BZIP2ED)
+ {
+#ifdef HAVE_BZIP2
+ pfile_in_zip_read_info->bstream.bzalloc = (void *(*) (void *, int, int))0;
+ pfile_in_zip_read_info->bstream.bzfree = (free_func)0;
+ pfile_in_zip_read_info->bstream.opaque = (voidpf)0;
+ pfile_in_zip_read_info->bstream.state = (voidpf)0;
+
+ err = BZ2_bzDecompressInit(&pfile_in_zip_read_info->bstream, 0, 0);
+ if (err == Z_OK)
+ {
+ pfile_in_zip_read_info->stream_initialised = Z_BZIP2ED;
+ }
+ else
+ {
+ TRYFREE(pfile_in_zip_read_info);
+ return err;
+ }
+#else
+ pfile_in_zip_read_info->raw = 1;
+#endif
+ }
+ else if (compression_method == Z_DEFLATED)
+ {
+#ifdef HAVE_APPLE_COMPRESSION
+ err = compression_stream_init(&pfile_in_zip_read_info->astream, COMPRESSION_STREAM_DECODE, COMPRESSION_ZLIB);
+ if (err == COMPRESSION_STATUS_ERROR)
+ err = UNZ_INTERNALERROR;
+ else
+ err = Z_OK;
+#else
+ err = inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS);
+#endif
+ if (err == Z_OK)
+ {
+ pfile_in_zip_read_info->stream_initialised = Z_DEFLATED;
+ }
+ else
+ {
+ TRYFREE(pfile_in_zip_read_info);
+ return err;
+ }
+ /* windowBits is passed < 0 to tell that there is no zlib header.
+ * Note that in this case inflate *requires* an extra "dummy" byte
+ * after the compressed stream in order to complete decompression and
+ * return Z_STREAM_END.
+ * In unzip, i don't wait absolutely Z_STREAM_END because I known the
+ * size of both compressed and uncompressed data
+ */
+ }
+ }
+
+ s->pfile_in_zip_read = pfile_in_zip_read_info;
+
+#ifndef NOUNCRYPT
+ s->pcrc_32_tab = NULL;
+
+ if ((password != NULL) && ((s->cur_file_info.flag & 1) != 0))
+ {
+ if (ZSEEK64(s->z_filefunc, s->filestream,
+ s->pfile_in_zip_read->pos_in_zipfile + s->pfile_in_zip_read->byte_before_the_zipfile,
+ ZLIB_FILEFUNC_SEEK_SET) != 0)
+ return UNZ_INTERNALERROR;
+#ifdef HAVE_AES
+ if (s->cur_file_info.compression_method == AES_METHOD)
+ {
+ unsigned char passverify_archive[AES_PWVERIFYSIZE];
+ unsigned char passverify_password[AES_PWVERIFYSIZE];
+ unsigned char salt_value[AES_MAXSALTLENGTH];
+ uint32_t salt_length = 0;
+
+ if ((s->cur_file_info_internal.aes_encryption_mode < 1) ||
+ (s->cur_file_info_internal.aes_encryption_mode > 3))
+ return UNZ_INTERNALERROR;
+
+ salt_length = SALT_LENGTH(s->cur_file_info_internal.aes_encryption_mode);
+
+ if (ZREAD64(s->z_filefunc, s->filestream, salt_value, salt_length) != salt_length)
+ return UNZ_INTERNALERROR;
+ if (ZREAD64(s->z_filefunc, s->filestream, passverify_archive, AES_PWVERIFYSIZE) != AES_PWVERIFYSIZE)
+ return UNZ_INTERNALERROR;
+
+ fcrypt_init(s->cur_file_info_internal.aes_encryption_mode, (uint8_t *)password,
+ (uint32_t)strlen(password), salt_value, passverify_password, &s->pfile_in_zip_read->aes_ctx);
+
+ if (memcmp(passverify_archive, passverify_password, AES_PWVERIFYSIZE) != 0)
+ return UNZ_BADPASSWORD;
+
+ s->pfile_in_zip_read->rest_read_compressed -= salt_length + AES_PWVERIFYSIZE;
+ s->pfile_in_zip_read->rest_read_compressed -= AES_AUTHCODESIZE;
+
+ s->pfile_in_zip_read->pos_in_zipfile += salt_length + AES_PWVERIFYSIZE;
+ }
+ else
+#endif
+ {
+ int i;
+ s->pcrc_32_tab = (const z_crc_t*)get_crc_table();
+ init_keys(password, s->keys, s->pcrc_32_tab);
+
+ if (ZREAD64(s->z_filefunc, s->filestream, source, 12) < 12)
+ return UNZ_INTERNALERROR;
+
+ for (i = 0; i < 12; i++)
+ zdecode(s->keys, s->pcrc_32_tab, source[i]);
+ uint8_t expected = (s->cur_file_info.flag & (1 << 3)) ?
+ s->cur_file_info.dos_date >> 8 :
+ s->cur_file_info.crc >> 24;
+ uint8_t actual = (uint8_t)source[11];
+ if (expected != actual) {
+ return UNZ_BADPASSWORD;
+ }
+
+ s->pfile_in_zip_read->rest_read_compressed -= 12;
+ s->pfile_in_zip_read->pos_in_zipfile += 12;
+ }
+ }
+#endif
+
+ return UNZ_OK;
+}
+
+extern int ZEXPORT unzOpenCurrentFile(unzFile file)
+{
+ return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL);
+}
+
+extern int ZEXPORT unzOpenCurrentFilePassword(unzFile file, const char *password)
+{
+ return unzOpenCurrentFile3(file, NULL, NULL, 0, password);
+}
+
+extern int ZEXPORT unzOpenCurrentFile2(unzFile file, int *method, int *level, int raw)
+{
+ return unzOpenCurrentFile3(file, method, level, raw, NULL);
+}
+
+/* Read bytes from the current file.
+ buf contain buffer where data must be copied
+ len the size of buf.
+
+ return the number of byte copied if some bytes are copied
+ return 0 if the end of file was reached
+ return <0 with error code if there is an error (UNZ_ERRNO for IO error, or zLib error for uncompress error) */
+extern int ZEXPORT unzReadCurrentFile(unzFile file, voidp buf, uint32_t len)
+{
+ unz64_internal *s = NULL;
+ uint32_t read = 0;
+ int err = UNZ_OK;
+
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+
+ if (s->pfile_in_zip_read == NULL)
+ return UNZ_PARAMERROR;
+ if (s->pfile_in_zip_read->read_buffer == NULL)
+ return UNZ_END_OF_LIST_OF_FILE;
+ if (len == 0)
+ return 0;
+ // avail_out is uInt, so uint32_t len might allow requesting a larger buffer than zlib can support
+ if (len > UINT_MAX)
+ return UNZ_PARAMERROR;
+
+ s->pfile_in_zip_read->stream.next_out = (uint8_t*)buf;
+ s->pfile_in_zip_read->stream.avail_out = (uInt)len;
+
+ if ((s->pfile_in_zip_read->compression_method == 0) || (s->pfile_in_zip_read->raw))
+ {
+ if (len > s->pfile_in_zip_read->rest_read_compressed + s->pfile_in_zip_read->stream.avail_in)
+ s->pfile_in_zip_read->stream.avail_out = (uInt)s->pfile_in_zip_read->rest_read_compressed +
+ s->pfile_in_zip_read->stream.avail_in;
+ }
+
+ do
+ {
+ if (s->pfile_in_zip_read->stream.avail_in == 0)
+ {
+ uint32_t bytes_to_read = UNZ_BUFSIZE;
+ uint32_t bytes_not_read = 0;
+ uint32_t bytes_read = 0;
+ uint32_t total_bytes_read = 0;
+
+ if (s->pfile_in_zip_read->stream.next_in != NULL)
+ bytes_not_read = (uint32_t)(s->pfile_in_zip_read->read_buffer + UNZ_BUFSIZE -
+ s->pfile_in_zip_read->stream.next_in);
+ bytes_to_read -= bytes_not_read;
+ if (bytes_not_read > 0)
+ memmove(s->pfile_in_zip_read->read_buffer, s->pfile_in_zip_read->stream.next_in, bytes_not_read);
+ if (s->pfile_in_zip_read->rest_read_compressed < bytes_to_read)
+ bytes_to_read = (uint32_t)s->pfile_in_zip_read->rest_read_compressed;
+
+ while (total_bytes_read != bytes_to_read)
+ {
+ if (ZSEEK64(s->pfile_in_zip_read->z_filefunc, s->pfile_in_zip_read->filestream,
+ s->pfile_in_zip_read->pos_in_zipfile + s->pfile_in_zip_read->byte_before_the_zipfile,
+ ZLIB_FILEFUNC_SEEK_SET) != 0)
+ return UNZ_ERRNO;
+
+ bytes_read = ZREAD64(s->pfile_in_zip_read->z_filefunc, s->pfile_in_zip_read->filestream,
+ s->pfile_in_zip_read->read_buffer + bytes_not_read + total_bytes_read,
+ bytes_to_read - total_bytes_read);
+
+ total_bytes_read += bytes_read;
+ s->pfile_in_zip_read->pos_in_zipfile += bytes_read;
+
+ if (bytes_read == 0)
+ {
+ if (ZERROR64(s->pfile_in_zip_read->z_filefunc, s->pfile_in_zip_read->filestream))
+ return UNZ_ERRNO;
+
+ err = unzGoToNextDisk(file);
+ if (err != UNZ_OK)
+ return err;
+
+ s->pfile_in_zip_read->pos_in_zipfile = 0;
+ s->pfile_in_zip_read->filestream = s->filestream;
+ }
+ }
+
+#ifndef NOUNCRYPT
+ if ((s->cur_file_info.flag & 1) != 0)
+ {
+#ifdef HAVE_AES
+ if (s->cur_file_info.compression_method == AES_METHOD)
+ {
+ fcrypt_decrypt(s->pfile_in_zip_read->read_buffer, bytes_to_read, &s->pfile_in_zip_read->aes_ctx);
+ }
+ else
+#endif
+ if (s->pcrc_32_tab != NULL)
+ {
+ uint32_t i = 0;
+
+ for (i = 0; i < total_bytes_read; i++)
+ s->pfile_in_zip_read->read_buffer[i] =
+ zdecode(s->keys, s->pcrc_32_tab, s->pfile_in_zip_read->read_buffer[i]);
+ }
+ }
+#endif
+
+ s->pfile_in_zip_read->rest_read_compressed -= total_bytes_read;
+ s->pfile_in_zip_read->stream.next_in = (uint8_t*)s->pfile_in_zip_read->read_buffer;
+ s->pfile_in_zip_read->stream.avail_in = (uInt)(bytes_not_read + total_bytes_read);
+ }
+
+ if ((s->pfile_in_zip_read->compression_method == 0) || (s->pfile_in_zip_read->raw))
+ {
+ uint32_t i = 0;
+ uint32_t copy = 0;
+
+ if ((s->pfile_in_zip_read->stream.avail_in == 0) &&
+ (s->pfile_in_zip_read->rest_read_compressed == 0))
+ return (read == 0) ? UNZ_EOF : read;
+
+ if (s->pfile_in_zip_read->stream.avail_out < s->pfile_in_zip_read->stream.avail_in)
+ copy = s->pfile_in_zip_read->stream.avail_out;
+ else
+ copy = s->pfile_in_zip_read->stream.avail_in;
+
+ for (i = 0; i < copy; i++)
+ *(s->pfile_in_zip_read->stream.next_out + i) =
+ *(s->pfile_in_zip_read->stream.next_in + i);
+
+ s->pfile_in_zip_read->total_out_64 = s->pfile_in_zip_read->total_out_64 + copy;
+ s->pfile_in_zip_read->rest_read_uncompressed -= copy;
+ s->pfile_in_zip_read->crc32 = (uint32_t)crc32(s->pfile_in_zip_read->crc32,
+ s->pfile_in_zip_read->stream.next_out, copy);
+
+ s->pfile_in_zip_read->stream.avail_in -= copy;
+ s->pfile_in_zip_read->stream.avail_out -= copy;
+ s->pfile_in_zip_read->stream.next_out += copy;
+ s->pfile_in_zip_read->stream.next_in += copy;
+ s->pfile_in_zip_read->stream.total_out += copy;
+
+ read += copy;
+ }
+ else if (s->pfile_in_zip_read->compression_method == Z_BZIP2ED)
+ {
+#ifdef HAVE_BZIP2
+ uint64_t total_out_before = 0;
+ uint64_t total_out_after = 0;
+ uint64_t out_bytes = 0;
+ const uint8_t *buf_before = NULL;
+
+ s->pfile_in_zip_read->bstream.next_in = (char*)s->pfile_in_zip_read->stream.next_in;
+ s->pfile_in_zip_read->bstream.avail_in = s->pfile_in_zip_read->stream.avail_in;
+ s->pfile_in_zip_read->bstream.total_in_lo32 = (uint32_t)s->pfile_in_zip_read->stream.total_in;
+ s->pfile_in_zip_read->bstream.total_in_hi32 = s->pfile_in_zip_read->stream.total_in >> 32;
+
+ s->pfile_in_zip_read->bstream.next_out = (char*)s->pfile_in_zip_read->stream.next_out;
+ s->pfile_in_zip_read->bstream.avail_out = s->pfile_in_zip_read->stream.avail_out;
+ s->pfile_in_zip_read->bstream.total_out_lo32 = (uint32_t)s->pfile_in_zip_read->stream.total_out;
+ s->pfile_in_zip_read->bstream.total_out_hi32 = s->pfile_in_zip_read->stream.total_out >> 32;
+
+ total_out_before = s->pfile_in_zip_read->bstream.total_out_lo32 +
+ (((uint32_t)s->pfile_in_zip_read->bstream.total_out_hi32) << 32);
+ buf_before = (const uint8_t*)s->pfile_in_zip_read->bstream.next_out;
+
+ err = BZ2_bzDecompress(&s->pfile_in_zip_read->bstream);
+
+ total_out_after = s->pfile_in_zip_read->bstream.total_out_lo32 +
+ (((uint32_t)s->pfile_in_zip_read->bstream.total_out_hi32) << 32);
+
+ out_bytes = total_out_after - total_out_before;
+
+ s->pfile_in_zip_read->total_out_64 = s->pfile_in_zip_read->total_out_64 + out_bytes;
+ s->pfile_in_zip_read->rest_read_uncompressed -= out_bytes;
+ s->pfile_in_zip_read->crc32 = crc32(s->pfile_in_zip_read->crc32, buf_before, (uint32_t)out_bytes);
+
+ read += (uint32_t)out_bytes;
+
+ s->pfile_in_zip_read->stream.next_in = (uint8_t*)s->pfile_in_zip_read->bstream.next_in;
+ s->pfile_in_zip_read->stream.avail_in = s->pfile_in_zip_read->bstream.avail_in;
+ s->pfile_in_zip_read->stream.total_in = s->pfile_in_zip_read->bstream.total_in_lo32;
+ s->pfile_in_zip_read->stream.next_out = (uint8_t*)s->pfile_in_zip_read->bstream.next_out;
+ s->pfile_in_zip_read->stream.avail_out = s->pfile_in_zip_read->bstream.avail_out;
+ s->pfile_in_zip_read->stream.total_out = s->pfile_in_zip_read->bstream.total_out_lo32;
+
+ if (err == BZ_STREAM_END)
+ return (read == 0) ? UNZ_EOF : read;
+ if (err != BZ_OK)
+ break;
+#endif
+ }
+#ifdef HAVE_APPLE_COMPRESSION
+ else
+ {
+ uint64_t total_out_before = 0;
+ uint64_t total_out_after = 0;
+ uint64_t out_bytes = 0;
+ const uint8_t *buf_before = NULL;
+
+ s->pfile_in_zip_read->astream.src_ptr = s->pfile_in_zip_read->stream.next_in;
+ s->pfile_in_zip_read->astream.src_size = s->pfile_in_zip_read->stream.avail_in;
+ s->pfile_in_zip_read->astream.dst_ptr = s->pfile_in_zip_read->stream.next_out;
+ s->pfile_in_zip_read->astream.dst_size = len;
+
+ total_out_before = s->pfile_in_zip_read->stream.total_out;
+ buf_before = s->pfile_in_zip_read->stream.next_out;
+
+ compression_status status;
+ compression_stream_flags flags;
+
+ if (s->pfile_in_zip_read->stream.avail_in == 0)
+ {
+ flags = COMPRESSION_STREAM_FINALIZE;
+ }
+
+ status = compression_stream_process(&s->pfile_in_zip_read->astream, flags);
+
+ total_out_after = len - s->pfile_in_zip_read->astream.dst_size;
+ out_bytes = total_out_after - total_out_before;
+
+ s->pfile_in_zip_read->total_out_64 += out_bytes;
+ s->pfile_in_zip_read->rest_read_uncompressed -= out_bytes;
+ s->pfile_in_zip_read->crc32 =
+ crc32(s->pfile_in_zip_read->crc32, buf_before, (uint32_t)out_bytes);
+
+ read += (uint32_t)out_bytes;
+
+ s->pfile_in_zip_read->stream.next_in = s->pfile_in_zip_read->astream.src_ptr;
+ s->pfile_in_zip_read->stream.avail_in = s->pfile_in_zip_read->astream.src_size;
+ s->pfile_in_zip_read->stream.next_out = s->pfile_in_zip_read->astream.dst_ptr;
+ s->pfile_in_zip_read->stream.avail_out = s->pfile_in_zip_read->astream.dst_size;
+
+ if (status == COMPRESSION_STATUS_END)
+ return (read == 0) ? UNZ_EOF : read;
+ if (status == COMPRESSION_STATUS_ERROR)
+ return Z_DATA_ERROR;
+ return read;
+ }
+#else
+ else
+ {
+ uint64_t total_out_before = 0;
+ uint64_t total_out_after = 0;
+ uint64_t out_bytes = 0;
+ const uint8_t *buf_before = NULL;
+ int flush = Z_SYNC_FLUSH;
+
+ total_out_before = s->pfile_in_zip_read->stream.total_out;
+ buf_before = s->pfile_in_zip_read->stream.next_out;
+
+ /*
+ if ((pfile_in_zip_read_info->rest_read_uncompressed ==
+ pfile_in_zip_read_info->stream.avail_out) &&
+ (pfile_in_zip_read_info->rest_read_compressed == 0))
+ flush = Z_FINISH;
+ */
+ err = inflate(&s->pfile_in_zip_read->stream, flush);
+
+ if ((err >= 0) && (s->pfile_in_zip_read->stream.msg != NULL))
+ err = Z_DATA_ERROR;
+
+ total_out_after = s->pfile_in_zip_read->stream.total_out;
+ out_bytes = total_out_after - total_out_before;
+
+ s->pfile_in_zip_read->total_out_64 += out_bytes;
+ s->pfile_in_zip_read->rest_read_uncompressed -= out_bytes;
+ s->pfile_in_zip_read->crc32 =
+ (uint32_t)crc32(s->pfile_in_zip_read->crc32, buf_before, (uint32_t)out_bytes);
+
+ read += (uint32_t)out_bytes;
+
+ if (err == Z_STREAM_END)
+ return (read == 0) ? UNZ_EOF : read;
+ if (err != Z_OK)
+ break;
+ }
+#endif
+ }
+ while (s->pfile_in_zip_read->stream.avail_out > 0);
+
+ if (err == Z_OK)
+ return read;
+ return err;
+}
+
+extern int ZEXPORT unzGetLocalExtrafield(unzFile file, voidp buf, uint32_t len)
+{
+ unz64_internal *s = NULL;
+ uint64_t size_to_read = 0;
+ uint32_t read_now = 0;
+
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+ if (s->pfile_in_zip_read == NULL)
+ return UNZ_PARAMERROR;
+
+ size_to_read = s->pfile_in_zip_read->size_local_extrafield - s->pfile_in_zip_read->pos_local_extrafield;
+
+ if (buf == NULL)
+ return (int)size_to_read;
+
+ if (len > size_to_read)
+ read_now = (uint32_t)size_to_read;
+ else
+ read_now = len;
+
+ if (read_now == 0)
+ return 0;
+
+ if (ZSEEK64(s->pfile_in_zip_read->z_filefunc, s->pfile_in_zip_read->filestream,
+ s->pfile_in_zip_read->offset_local_extrafield + s->pfile_in_zip_read->pos_local_extrafield,
+ ZLIB_FILEFUNC_SEEK_SET) != 0)
+ return UNZ_ERRNO;
+
+ if (ZREAD64(s->pfile_in_zip_read->z_filefunc, s->pfile_in_zip_read->filestream, buf, read_now) != read_now)
+ return UNZ_ERRNO;
+
+ return (int)read_now;
+}
+
+extern int ZEXPORT unzCloseCurrentFile(unzFile file)
+{
+ unz64_internal *s = NULL;
+ file_in_zip64_read_info_s *pfile_in_zip_read_info = NULL;
+ int err = UNZ_OK;
+
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+ pfile_in_zip_read_info = s->pfile_in_zip_read;
+ if (pfile_in_zip_read_info == NULL)
+ return UNZ_PARAMERROR;
+
+#ifdef HAVE_AES
+ if (s->cur_file_info.compression_method == AES_METHOD)
+ {
+ unsigned char authcode[AES_AUTHCODESIZE];
+ unsigned char rauthcode[AES_AUTHCODESIZE];
+
+ if (ZREAD64(s->z_filefunc, s->filestream, authcode, AES_AUTHCODESIZE) != AES_AUTHCODESIZE)
+ return UNZ_ERRNO;
+
+ if (fcrypt_end(rauthcode, &s->pfile_in_zip_read->aes_ctx) != AES_AUTHCODESIZE)
+ err = UNZ_CRCERROR;
+ if (memcmp(authcode, rauthcode, AES_AUTHCODESIZE) != 0)
+ err = UNZ_CRCERROR;
+ }
+ /* AES zip version AE-1 will expect a valid crc as well */
+ if ((s->cur_file_info.compression_method != AES_METHOD) ||
+ (s->cur_file_info_internal.aes_version == 0x0001))
+#endif
+ {
+ if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) &&
+ (!pfile_in_zip_read_info->raw))
+ {
+ if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_expected)
+ err = UNZ_CRCERROR;
+ }
+ }
+
+ TRYFREE(pfile_in_zip_read_info->read_buffer);
+ pfile_in_zip_read_info->read_buffer = NULL;
+ if (pfile_in_zip_read_info->stream_initialised == Z_DEFLATED)
+ {
+#ifdef HAVE_APPLE_COMPRESSION
+ if (compression_stream_destroy)
+ compression_stream_destroy(&pfile_in_zip_read_info->astream);
+#else
+ inflateEnd(&pfile_in_zip_read_info->stream);
+#endif
+ }
+#ifdef HAVE_BZIP2
+ else if (pfile_in_zip_read_info->stream_initialised == Z_BZIP2ED)
+ BZ2_bzDecompressEnd(&pfile_in_zip_read_info->bstream);
+#endif
+
+ pfile_in_zip_read_info->stream_initialised = 0;
+ TRYFREE(pfile_in_zip_read_info);
+
+ s->pfile_in_zip_read = NULL;
+
+ return err;
+}
+
+extern int ZEXPORT unzGoToFirstFile2(unzFile file, unz_file_info64 *pfile_info, char *filename,
+ uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size)
+{
+ unz64_internal *s = NULL;
+ int err = UNZ_OK;
+
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+
+ if (s->gi.number_entry == 0)
+ return UNZ_END_OF_LIST_OF_FILE;
+
+ s->pos_in_central_dir = s->offset_central_dir;
+ s->num_file = 0;
+
+ err = unzGetCurrentFileInfoInternal(file, &s->cur_file_info, &s->cur_file_info_internal,
+ filename, filename_size, extrafield, extrafield_size, comment, comment_size);
+
+ s->current_file_ok = (err == UNZ_OK);
+ if ((err == UNZ_OK) && (pfile_info != NULL))
+ memcpy(pfile_info, &s->cur_file_info, sizeof(unz_file_info64));
+
+ return err;
+}
+
+extern int ZEXPORT unzGoToFirstFile(unzFile file)
+{
+ return unzGoToFirstFile2(file, NULL, NULL, 0, NULL, 0, NULL, 0);
+}
+
+extern int ZEXPORT unzGoToNextFile2(unzFile file, unz_file_info64 *pfile_info, char *filename,
+ uint16_t filename_size, void *extrafield, uint16_t extrafield_size, char *comment, uint16_t comment_size)
+{
+ unz64_internal *s = NULL;
+ int err = UNZ_OK;
+
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+
+ if (!s->current_file_ok)
+ return UNZ_END_OF_LIST_OF_FILE;
+ if (s->gi.number_entry != UINT16_MAX) /* 2^16 files overflow hack */
+ {
+ if (s->num_file+1 == s->gi.number_entry)
+ return UNZ_END_OF_LIST_OF_FILE;
+ }
+
+ s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename +
+ s->cur_file_info.size_file_extra + s->cur_file_info.size_file_comment;
+ s->num_file += 1;
+
+ err = unzGetCurrentFileInfoInternal(file, &s->cur_file_info, &s->cur_file_info_internal,
+ filename, filename_size, extrafield, extrafield_size, comment, comment_size);
+
+ s->current_file_ok = (err == UNZ_OK);
+ if ((err == UNZ_OK) && (pfile_info != NULL))
+ memcpy(pfile_info, &s->cur_file_info, sizeof(unz_file_info64));
+
+ return err;
+}
+
+extern int ZEXPORT unzGoToNextFile(unzFile file)
+{
+ return unzGoToNextFile2(file, NULL, NULL, 0, NULL, 0, NULL, 0);
+}
+
+extern int ZEXPORT unzLocateFile(unzFile file, const char *filename, unzFileNameComparer filename_compare_func)
+{
+ unz64_internal *s = NULL;
+ unz_file_info64 cur_file_info_saved;
+ unz_file_info64_internal cur_file_info_internal_saved;
+ uint64_t num_file_saved = 0;
+ uint64_t pos_in_central_dir_saved = 0;
+ char current_filename[UNZ_MAXFILENAMEINZIP+1];
+ int err = UNZ_OK;
+
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ if (strlen(filename) >= UNZ_MAXFILENAMEINZIP)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+ if (!s->current_file_ok)
+ return UNZ_END_OF_LIST_OF_FILE;
+
+ /* Save the current state */
+ num_file_saved = s->num_file;
+ pos_in_central_dir_saved = s->pos_in_central_dir;
+ cur_file_info_saved = s->cur_file_info;
+ cur_file_info_internal_saved = s->cur_file_info_internal;
+
+ err = unzGoToFirstFile2(file, NULL, current_filename, sizeof(current_filename)-1, NULL, 0, NULL, 0);
+
+ while (err == UNZ_OK)
+ {
+ if (filename_compare_func != NULL)
+ err = filename_compare_func(file, current_filename, filename);
+ else
+ err = strcmp(current_filename, filename);
+ if (err == 0)
+ return UNZ_OK;
+ err = unzGoToNextFile2(file, NULL, current_filename, sizeof(current_filename)-1, NULL, 0, NULL, 0);
+ }
+
+ /* We failed, so restore the state of the 'current file' to where we were. */
+ s->num_file = num_file_saved;
+ s->pos_in_central_dir = pos_in_central_dir_saved;
+ s->cur_file_info = cur_file_info_saved;
+ s->cur_file_info_internal = cur_file_info_internal_saved;
+ return err;
+}
+
+extern int ZEXPORT unzGetFilePos(unzFile file, unz_file_pos *file_pos)
+{
+ unz64_file_pos file_pos64;
+ int err = unzGetFilePos64(file, &file_pos64);
+ if (err == UNZ_OK)
+ {
+ file_pos->pos_in_zip_directory = (uint32_t)file_pos64.pos_in_zip_directory;
+ file_pos->num_of_file = (uint32_t)file_pos64.num_of_file;
+ }
+ return err;
+}
+
+extern int ZEXPORT unzGoToFilePos(unzFile file, unz_file_pos *file_pos)
+{
+ unz64_file_pos file_pos64;
+ if (file_pos == NULL)
+ return UNZ_PARAMERROR;
+ file_pos64.pos_in_zip_directory = file_pos->pos_in_zip_directory;
+ file_pos64.num_of_file = file_pos->num_of_file;
+ return unzGoToFilePos64(file, &file_pos64);
+}
+
+extern int ZEXPORT unzGetFilePos64(unzFile file, unz64_file_pos *file_pos)
+{
+ unz64_internal *s = NULL;
+
+ if (file == NULL || file_pos == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+ if (!s->current_file_ok)
+ return UNZ_END_OF_LIST_OF_FILE;
+
+ file_pos->pos_in_zip_directory = s->pos_in_central_dir;
+ file_pos->num_of_file = s->num_file;
+ return UNZ_OK;
+}
+
+extern int ZEXPORT unzGoToFilePos64(unzFile file, const unz64_file_pos *file_pos)
+{
+ unz64_internal *s = NULL;
+ int err = UNZ_OK;
+
+ if (file == NULL || file_pos == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+
+ /* Jump to the right spot */
+ s->pos_in_central_dir = file_pos->pos_in_zip_directory;
+ s->num_file = file_pos->num_of_file;
+
+ /* Set the current file */
+ err = unzGetCurrentFileInfoInternal(file, &s->cur_file_info, &s->cur_file_info_internal, NULL, 0, NULL, 0, NULL, 0);
+ /* Return results */
+ s->current_file_ok = (err == UNZ_OK);
+ return err;
+}
+
+extern int32_t ZEXPORT unzGetOffset(unzFile file)
+{
+ uint64_t offset64 = 0;
+
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ offset64 = unzGetOffset64(file);
+ return (int32_t)offset64;
+}
+
+extern int64_t ZEXPORT unzGetOffset64(unzFile file)
+{
+ unz64_internal *s = NULL;
+
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+ if (!s->current_file_ok)
+ return 0;
+ if (s->gi.number_entry != 0 && s->gi.number_entry != UINT16_MAX)
+ {
+ if (s->num_file == s->gi.number_entry)
+ return 0;
+ }
+ return s->pos_in_central_dir;
+}
+
+extern int ZEXPORT unzSetOffset(unzFile file, uint32_t pos)
+{
+ return unzSetOffset64(file, pos);
+}
+
+extern int ZEXPORT unzSetOffset64(unzFile file, uint64_t pos)
+{
+ unz64_internal *s = NULL;
+ int err = UNZ_OK;
+
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+ s->pos_in_central_dir = pos;
+ s->num_file = s->gi.number_entry; /* hack */
+
+ err = unzGetCurrentFileInfoInternal(file, &s->cur_file_info, &s->cur_file_info_internal, NULL, 0, NULL, 0, NULL, 0);
+
+ s->current_file_ok = (err == UNZ_OK);
+ return err;
+}
+
+extern int32_t ZEXPORT unzTell(unzFile file)
+{
+ unz64_internal *s = NULL;
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+ if (s->pfile_in_zip_read == NULL)
+ return UNZ_PARAMERROR;
+ return (int32_t)s->pfile_in_zip_read->stream.total_out;
+}
+
+extern int64_t ZEXPORT unzTell64(unzFile file)
+{
+ unz64_internal *s = NULL;
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+ if (s->pfile_in_zip_read == NULL)
+ return UNZ_PARAMERROR;
+ return s->pfile_in_zip_read->total_out_64;
+}
+
+extern int ZEXPORT unzSeek(unzFile file, uint32_t offset, int origin)
+{
+ return unzSeek64(file, offset, origin);
+}
+
+extern int ZEXPORT unzSeek64(unzFile file, uint64_t offset, int origin)
+{
+ unz64_internal *s = NULL;
+ uint64_t stream_pos_begin = 0;
+ uint64_t stream_pos_end = 0;
+ uint64_t position = 0;
+ int is_within_buffer = 0;
+
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+
+ if (s->pfile_in_zip_read == NULL)
+ return UNZ_ERRNO;
+ if (s->pfile_in_zip_read->compression_method != 0)
+ return UNZ_ERRNO;
+
+ if (origin == SEEK_SET)
+ position = offset;
+ else if (origin == SEEK_CUR)
+ position = s->pfile_in_zip_read->total_out_64 + offset;
+ else if (origin == SEEK_END)
+ position = s->cur_file_info.compressed_size + offset;
+ else
+ return UNZ_PARAMERROR;
+
+ if (position > s->cur_file_info.compressed_size)
+ return UNZ_PARAMERROR;
+
+ stream_pos_end = s->pfile_in_zip_read->pos_in_zipfile;
+ stream_pos_begin = stream_pos_end;
+
+ if (stream_pos_begin > UNZ_BUFSIZE)
+ stream_pos_begin -= UNZ_BUFSIZE;
+ else
+ stream_pos_begin = 0;
+
+ is_within_buffer =
+ (s->pfile_in_zip_read->stream.avail_in != 0) &&
+ (s->pfile_in_zip_read->rest_read_compressed != 0 || s->cur_file_info.compressed_size < UNZ_BUFSIZE) &&
+ (position >= stream_pos_begin && position < stream_pos_end);
+
+ if (is_within_buffer)
+ {
+ s->pfile_in_zip_read->stream.next_in += position - s->pfile_in_zip_read->total_out_64;
+ s->pfile_in_zip_read->stream.avail_in = (uInt)(stream_pos_end - position);
+ }
+ else
+ {
+ s->pfile_in_zip_read->stream.avail_in = 0;
+ s->pfile_in_zip_read->stream.next_in = 0;
+
+ s->pfile_in_zip_read->pos_in_zipfile = s->pfile_in_zip_read->offset_local_extrafield + position;
+ s->pfile_in_zip_read->rest_read_compressed = s->cur_file_info.compressed_size - position;
+ }
+
+ s->pfile_in_zip_read->rest_read_uncompressed -= (position - s->pfile_in_zip_read->total_out_64);
+ s->pfile_in_zip_read->stream.total_out = (uint32_t)position;
+ s->pfile_in_zip_read->total_out_64 = position;
+
+ return UNZ_OK;
+}
+
+extern int ZEXPORT unzEndOfFile(unzFile file)
+{
+ unz64_internal *s = NULL;
+ if (file == NULL)
+ return UNZ_PARAMERROR;
+ s = (unz64_internal*)file;
+ if (s->pfile_in_zip_read == NULL)
+ return UNZ_PARAMERROR;
+ if (s->pfile_in_zip_read->rest_read_uncompressed == 0)
+ return 1;
+ return 0;
+}
projects / rocksndiamonds.git / commitdiff