| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* unzip.c -- IO for uncompress .zip files using zlib |
| * Version 1.01e, February 12th, 2005 |
| * |
| * Copyright (C) 1998-2005 Gilles Vollant |
| * |
| * Read axis2_unzip.h for more info |
| * |
| * |
| * Decryption code comes from crypt.c by Info-ZIP but has been greatly reduced in terms of |
| * compatibility with older software. The following is from the original crypt.c. Code |
| * woven in by Terry Thorsen 1/2003. |
| * |
| * |
| * |
| * Copyright (c) 1990-2000 Info-ZIP. All rights reserved. |
| * |
| * See the accompanying file LICENSE, version 2000-Apr-09 or later |
| * (the contents of which are also included in zip.h) for terms of use. |
| * If, for some reason, all these files are missing, the Info-ZIP license |
| * also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html |
| * |
| * |
| * |
| * crypt.c (full version) by Info-ZIP. Last revised: [see crypt.h] |
| * |
| * The encryption/decryption parts of this source code (as opposed to the |
| * non-echoing password parts) were originally written in Europe. The |
| * whole source package can be freely distributed, including from the USA. |
| * (Prior to January 2000, re-export from the US was a violation of US law.) |
| * |
| * |
| * |
| * This encryption code is a direct transcription of the algorithm from |
| * Roger Schlafly, described by Phil Katz in the file appnote.txt. This |
| * file (appnote.txt) is distributed with the PKZIP program (even in the |
| * version without encryption capabilities). |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include "zlib.h" |
| #include "axis2_unzip.h" |
| |
| #ifdef STDC |
| # include <stddef.h> |
| # include <string.h> |
| # include <stdlib.h> |
| #endif |
| #ifdef NO_ERRNO_H |
| extern int errno; |
| #else |
| # include <errno.h> |
| #endif |
| |
| #ifndef local |
| # define local static |
| #endif |
| |
| /* compile with -Dlocal if your debugger can't find static symbols */ |
| |
| #ifndef CASESENSITIVITYDEFAULT_NO |
| # if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES) |
| # define CASESENSITIVITYDEFAULT_NO |
| # endif |
| #endif |
| |
| #ifndef UNZ_BUFSIZE |
| #define UNZ_BUFSIZE (16384) |
| #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 |
| |
| #define SIZECENTRALDIRITEM (0x2e) |
| #define SIZEZIPLOCALHEADER (0x1e) |
| |
| const char unz_copyright[] = |
| " unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll"; |
| |
| /* unz_file_info_interntal contain internal info about a file in zipfile*/ |
| typedef struct unz_file_info_internal_s |
| { |
| uLong offset_curfile; /* relative offset of local header 4 bytes */ |
| } |
| unz_file_info_internal; |
| |
| /* |
| * file_in_zip_read_info_s contain internal information about a file in zipfile, |
| * when reading and decompress it |
| */ |
| typedef struct |
| { |
| char *read_buffer; /* internal buffer for compressed data */ |
| z_stream stream; /* zLib stream structure for inflate */ |
| |
| uLong pos_in_zipfile; /* position in byte on the zipfile, for fseek */ |
| uLong stream_initialised; /* flag set if stream structure is initialised */ |
| |
| uLong offset_local_extrafield; /* offset of the local extra field */ |
| uInt size_local_extrafield; /* size of the local extra field */ |
| uLong pos_local_extrafield; /* position in the local extra field in read */ |
| |
| uLong crc32; /* crc32 of all data uncompressed */ |
| uLong crc32_wait; /* crc32 we must obtain after decompress all */ |
| uLong rest_read_compressed; /* number of byte to be decompressed */ |
| uLong rest_read_uncompressed; /*number of byte to be obtained after decomp */ |
| zlib_filefunc_def z_filefunc; |
| voidpf filestream; /* io structore of the zipfile */ |
| uLong compression_method; /* compression method (0==store) */ |
| uLong byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx) */ |
| int raw; |
| } |
| file_in_zip_read_info_s; |
| |
| /* unz_s contain internal information about the zipfile */ |
| typedef struct |
| { |
| zlib_filefunc_def z_filefunc; |
| voidpf filestream; /* io structore of the zipfile */ |
| unz_global_info gi; /* public global information */ |
| uLong byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx) */ |
| uLong num_file; /* number of the current file in the zipfile */ |
| uLong pos_in_central_dir; /* pos of the current file in the central dir */ |
| uLong current_file_ok; /* flag about the usability of the current file */ |
| uLong central_pos; /* position of the beginning of the central dir */ |
| |
| uLong size_central_dir; /* size of the central directory */ |
| uLong offset_central_dir; /* offset of start of central directory with |
| * respect to the starting disk number */ |
| |
| unz_file_info cur_file_info; /* public info about the current file in zip */ |
| unz_file_info_internal cur_file_info_internal; /* private info about it */ |
| file_in_zip_read_info_s *pfile_in_zip_read; /* structure about the current |
| * file if we are decompressing it */ |
| int encrypted; |
| # ifndef NOUNCRYPT |
| unsigned long keys[3]; /* keys defining the pseudo-random sequence */ |
| const unsigned long *pcrc_32_tab; |
| # endif |
| } |
| unz_s; |
| |
| #ifndef NOUNCRYPT |
| #include <axis2_crypt.h> |
| #endif |
| |
| /* |
| * Read a byte from a gz_stream; update next_in and avail_in. Return EOF |
| * for end of file. |
| * IN assertion: the stream s has been sucessfully opened for reading. |
| */ |
| |
| local int unzlocal_getByte OF( |
| (const zlib_filefunc_def * pzlib_filefunc_def, |
| voidpf filestream, |
| int *pi)); |
| |
| local int |
| unzlocal_getByte( |
| const zlib_filefunc_def *pzlib_filefunc_def, |
| voidpf filestream, |
| int *pi) |
| { |
| unsigned char c; |
| int err = (int) ZREAD(*pzlib_filefunc_def, filestream, &c, 1); |
| if (err == 1) |
| { |
| *pi = (int) c; |
| return UNZ_OK; |
| } |
| else |
| { |
| if (ZERROR(*pzlib_filefunc_def, filestream)) |
| return UNZ_ERRNO; |
| else |
| return UNZ_EOF; |
| } |
| } |
| |
| /* Reads a long in LSB order from the given gz_stream. Sets */ |
| local int unzlocal_getShort OF( |
| (const zlib_filefunc_def * pzlib_filefunc_def, |
| voidpf filestream, |
| uLong * pX)); |
| |
| local int |
| unzlocal_getShort( |
| const zlib_filefunc_def *pzlib_filefunc_def, |
| voidpf filestream, |
| uLong *pX) |
| { |
| uLong x; |
| int i = 0; |
| int err = 0; |
| |
| err = unzlocal_getByte(pzlib_filefunc_def, filestream, &i); |
| x = (uLong) i; |
| |
| if (err == UNZ_OK) |
| err = unzlocal_getByte(pzlib_filefunc_def, filestream, &i); |
| x += ((uLong) i) << 8; |
| |
| if (err == UNZ_OK) |
| *pX = x; |
| else |
| *pX = 0; |
| return err; |
| } |
| |
| local int unzlocal_getLong OF( |
| (const zlib_filefunc_def * pzlib_filefunc_def, |
| voidpf filestream, |
| uLong * pX)); |
| |
| local int |
| unzlocal_getLong( |
| const zlib_filefunc_def *pzlib_filefunc_def, |
| voidpf filestream, |
| uLong *pX) |
| { |
| uLong x; |
| int i = 0; |
| int err = 0; |
| |
| err = unzlocal_getByte(pzlib_filefunc_def, filestream, &i); |
| x = (uLong) i; |
| |
| if (err == UNZ_OK) |
| err = unzlocal_getByte(pzlib_filefunc_def, filestream, &i); |
| x += ((uLong) i) << 8; |
| |
| if (err == UNZ_OK) |
| err = unzlocal_getByte(pzlib_filefunc_def, filestream, &i); |
| x += ((uLong) i) << 16; |
| |
| if (err == UNZ_OK) |
| err = unzlocal_getByte(pzlib_filefunc_def, filestream, &i); |
| x += ((uLong) i) << 24; |
| |
| if (err == UNZ_OK) |
| *pX = x; |
| else |
| *pX = 0; |
| return err; |
| } |
| |
| /* My own strcmpi / strcasecmp */ |
| local int |
| strcmpcasenosensitive_internal( |
| const char *fileName1, |
| const char *fileName2) |
| { |
| for (;;) |
| { |
| char c1 = *(fileName1++); |
| char c2 = *(fileName2++); |
| if ((c1 >= 'a') && (c1 <= 'z')) |
| c1 -= 0x20; |
| if ((c2 >= 'a') && (c2 <= 'z')) |
| c2 -= 0x20; |
| if (c1 == '\0') |
| return ((c2 == '\0') ? 0 : -1); |
| if (c2 == '\0') |
| return 1; |
| if (c1 < c2) |
| return -1; |
| if (c1 > c2) |
| return 1; |
| } |
| } |
| |
| #ifdef CASESENSITIVITYDEFAULT_NO |
| #define CASESENSITIVITYDEFAULTVALUE 2 |
| #else |
| #define CASESENSITIVITYDEFAULTVALUE 1 |
| #endif |
| |
| #ifndef STRCMPCASENOSENTIVEFUNCTION |
| #define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal |
| #endif |
| |
| /* |
| * Compare two filename (fileName1,fileName2). |
| * If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp) |
| * If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi |
| * or strcasecmp) |
| * If iCaseSenisivity = 0, case sensitivity is defaut of your operating system |
| * (like 1 on Unix, 2 on Windows) |
| */ |
| extern int ZEXPORT |
| unzStringFileNameCompare( |
| const char *fileName1, |
| const char *fileName2, |
| int iCaseSensitivity) |
| { |
| if (iCaseSensitivity == 0) |
| iCaseSensitivity = CASESENSITIVITYDEFAULTVALUE; |
| |
| if (iCaseSensitivity == 1) |
| return strcmp(fileName1, fileName2); |
| |
| return STRCMPCASENOSENTIVEFUNCTION(fileName1, fileName2); |
| } |
| |
| #ifndef BUFREADCOMMENT |
| #define BUFREADCOMMENT (0x400) |
| #endif |
| |
| /* |
| * Locate the Central directory of a zipfile (at the end, just before |
| * the global comment) |
| */ |
| local uLong unzlocal_SearchCentralDir OF( |
| (const zlib_filefunc_def * pzlib_filefunc_def, |
| voidpf filestream)); |
| |
| local uLong |
| unzlocal_SearchCentralDir( |
| const zlib_filefunc_def *pzlib_filefunc_def, |
| voidpf filestream) |
| { |
| unsigned char *buf; |
| uLong uSizeFile; |
| uLong uBackRead; |
| uLong uMaxBack = 0xffff; /* maximum size of global comment */ |
| uLong uPosFound = 0; |
| |
| if (ZSEEK(*pzlib_filefunc_def, filestream, 0, ZLIB_FILEFUNC_SEEK_END) != 0) |
| return 0; |
| |
| uSizeFile = ZTELL(*pzlib_filefunc_def, filestream); |
| |
| if (uMaxBack > uSizeFile) |
| uMaxBack = uSizeFile; |
| |
| buf = (unsigned char *) ALLOC(BUFREADCOMMENT + 4); |
| if (buf == NULL) |
| return 0; |
| |
| uBackRead = 4; |
| while (uBackRead < uMaxBack) |
| { |
| uLong uReadSize, |
| uReadPos; |
| int i = 0; |
| if (uBackRead + BUFREADCOMMENT > uMaxBack) |
| uBackRead = uMaxBack; |
| else |
| uBackRead += BUFREADCOMMENT; |
| uReadPos = uSizeFile - uBackRead; |
| |
| uReadSize = ((BUFREADCOMMENT + 4) < (uSizeFile - uReadPos)) ? |
| (BUFREADCOMMENT + 4) : (uSizeFile - uReadPos); |
| if (ZSEEK |
| (*pzlib_filefunc_def, filestream, uReadPos, |
| ZLIB_FILEFUNC_SEEK_SET) != 0) |
| break; |
| |
| if (ZREAD(*pzlib_filefunc_def, filestream, buf, uReadSize) != uReadSize) |
| break; |
| |
| for (i = (int) uReadSize - 3; (i--) > 0;) |
| if (((*(buf + i)) == 0x50) && ((*(buf + i + 1)) == 0x4b) && |
| ((*(buf + i + 2)) == 0x05) && ((*(buf + i + 3)) == 0x06)) |
| { |
| uPosFound = uReadPos + i; |
| break; |
| } |
| |
| if (uPosFound != 0) |
| break; |
| } |
| TRYFREE(buf); |
| return uPosFound; |
| } |
| |
| /* |
| * Open a Zip file. path contain the full pathname (by example, |
| * on a Windows NT computer "c:\\test\\zlib114.zip" or on an Unix computer |
| * "zlib/zlib114.zip". |
| * If the zipfile cannot be opened (file doesn't exist or in not valid), the |
| * return value is NULL. |
| * Else, the return value is a unzFile Handle, usable with other function |
| * of this unzip package. |
| */ |
| extern unzFile ZEXPORT |
| unzOpen2( |
| const char *path, |
| zlib_filefunc_def *pzlib_filefunc_def) |
| { |
| unz_s us; |
| unz_s *s; |
| uLong central_pos, |
| uL; |
| |
| uLong number_disk; /* number of the current dist, used for |
| * spaning ZIP, unsupported, always 0 */ |
| uLong number_disk_with_CD; /* number the the disk with central dir, used |
| * for spaning ZIP, unsupported, always 0 */ |
| uLong number_entry_CD; /* total number of entries in |
| * the central dir |
| * (same than number_entry on nospan) */ |
| |
| int err = UNZ_OK; |
| |
| if (unz_copyright[0] != ' ') |
| return NULL; |
| |
| if (pzlib_filefunc_def == NULL) |
| fill_fopen_filefunc(&us.z_filefunc); |
| else |
| us.z_filefunc = *pzlib_filefunc_def; |
| |
| us.filestream = (*(us.z_filefunc.zopen_file)) (us.z_filefunc.opaque, |
| path, |
| ZLIB_FILEFUNC_MODE_READ | |
| ZLIB_FILEFUNC_MODE_EXISTING); |
| if (us.filestream == NULL) |
| return NULL; |
| |
| central_pos = unzlocal_SearchCentralDir(&us.z_filefunc, us.filestream); |
| if (central_pos == 0) |
| err = UNZ_ERRNO; |
| |
| if (ZSEEK(us.z_filefunc, us.filestream, |
| central_pos, ZLIB_FILEFUNC_SEEK_SET) != 0) |
| err = UNZ_ERRNO; |
| |
| /* the signature, already checked */ |
| if (unzlocal_getLong(&us.z_filefunc, us.filestream, &uL) != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| /* number of this disk */ |
| if (unzlocal_getShort(&us.z_filefunc, us.filestream, &number_disk) != |
| UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| /* number of the disk with the start of the central directory */ |
| if (unzlocal_getShort(&us.z_filefunc, us.filestream, &number_disk_with_CD) |
| != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| /* total number of entries in the central dir on this disk */ |
| if (unzlocal_getShort(&us.z_filefunc, us.filestream, &us.gi.number_entry) != |
| UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| /* total number of entries in the central dir */ |
| if (unzlocal_getShort(&us.z_filefunc, us.filestream, &number_entry_CD) != |
| UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if ((number_entry_CD != us.gi.number_entry) || |
| (number_disk_with_CD != 0) || (number_disk != 0)) |
| err = UNZ_BADZIPFILE; |
| |
| /* size of the central directory */ |
| if (unzlocal_getLong(&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 (unzlocal_getLong(&us.z_filefunc, us.filestream, &us.offset_central_dir) |
| != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| /* zipfile comment length */ |
| if (unzlocal_getShort(&us.z_filefunc, us.filestream, &us.gi.size_comment) != |
| UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if ((central_pos < us.offset_central_dir + us.size_central_dir) && |
| (err == UNZ_OK)) |
| err = UNZ_BADZIPFILE; |
| |
| if (err != UNZ_OK) |
| { |
| ZCLOSE(us.z_filefunc, us.filestream); |
| return NULL; |
| } |
| |
| 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; |
| us.encrypted = 0; |
| |
| s = (unz_s *) ALLOC(sizeof(unz_s)); |
| *s = us; |
| unzGoToFirstFile((unzFile) s); |
| return (unzFile) s; |
| } |
| |
| extern unzFile ZEXPORT |
| unzOpen( |
| const char *path) |
| { |
| return unzOpen2(path, NULL); |
| } |
| |
| /* |
| * Close a ZipFile opened with unzipOpen. |
| * If there is files inside the .Zip opened with unzipOpenCurrentFile (see later), |
| * these files MUST be closed with unzipCloseCurrentFile before call unzipClose. |
| * return UNZ_OK if there is no problem. |
| */ |
| extern int ZEXPORT |
| unzClose( |
| unzFile file) |
| { |
| unz_s *s; |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| |
| if (s->pfile_in_zip_read) |
| unzCloseCurrentFile(file); |
| |
| ZCLOSE(s->z_filefunc, s->filestream); |
| TRYFREE(s); |
| return UNZ_OK; |
| } |
| |
| /* |
| * Write info about the ZipFile in the *pglobal_info structure. |
| * No preparation of the structure is needed |
| * return UNZ_OK if there is no problem. |
| */ |
| extern int ZEXPORT |
| unzGetGlobalInfo( |
| unzFile file, |
| unz_global_info *pglobal_info) |
| { |
| unz_s *s; |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| *pglobal_info = s->gi; |
| return UNZ_OK; |
| } |
| |
| /* Translate date/time from Dos format to tm_unz (readable more easilty) */ |
| local void |
| unzlocal_DosDateToTmuDate( |
| uLong ulDosDate, |
| tm_unz *ptm) |
| { |
| uLong uDate; |
| uDate = (uLong) (ulDosDate >> 16); |
| ptm->tm_mday = (uInt) (uDate & 0x1f); |
| ptm->tm_mon = (uInt) ((((uDate) & 0x1E0) / 0x20) - 1); |
| ptm->tm_year = (uInt) (((uDate & 0x0FE00) / 0x0200) + 1980); |
| |
| ptm->tm_hour = (uInt) ((ulDosDate & 0xF800) / 0x800); |
| ptm->tm_min = (uInt) ((ulDosDate & 0x7E0) / 0x20); |
| ptm->tm_sec = (uInt) (2 * (ulDosDate & 0x1f)); |
| } |
| |
| /* Get Info about the current file in the zipfile, with internal only info */ |
| local int unzlocal_GetCurrentFileInfoInternal OF( |
| (unzFile file, |
| unz_file_info * pfile_info, |
| unz_file_info_internal * pfile_info_internal, |
| char *szFileName, |
| uLong fileNameBufferSize, |
| void *extraField, |
| uLong extraFieldBufferSize, |
| char *szComment, |
| uLong commentBufferSize)); |
| |
| local int |
| unzlocal_GetCurrentFileInfoInternal( |
| unzFile file, |
| unz_file_info *pfile_info, |
| unz_file_info_internal *pfile_info_internal, |
| char *szFileName, |
| uLong fileNameBufferSize, |
| void *extraField, |
| uLong extraFieldBufferSize, |
| char *szComment, |
| uLong commentBufferSize) |
| { |
| unz_s *s; |
| unz_file_info file_info; |
| unz_file_info_internal file_info_internal; |
| int err = UNZ_OK; |
| uLong uMagic = 0x00000000; |
| long lSeek = 0; |
| |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| if (ZSEEK(s->z_filefunc, s->filestream, |
| s->pos_in_central_dir + s->byte_before_the_zipfile, |
| ZLIB_FILEFUNC_SEEK_SET) != 0) |
| err = UNZ_ERRNO; |
| |
| /* we check the magic */ |
| if (err == UNZ_OK) |
| { |
| if (unzlocal_getLong(&s->z_filefunc, s->filestream, &uMagic) != UNZ_OK) |
| err = UNZ_ERRNO; |
| } |
| else if (uMagic != 0x02014b50) |
| { |
| err = UNZ_BADZIPFILE; |
| } |
| |
| if (unzlocal_getShort(&s->z_filefunc, s->filestream, &file_info.version) != |
| UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getShort |
| (&s->z_filefunc, s->filestream, &file_info.version_needed) != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getShort(&s->z_filefunc, s->filestream, &file_info.flag) != |
| UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getShort |
| (&s->z_filefunc, s->filestream, |
| &file_info.compression_method) != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getLong(&s->z_filefunc, s->filestream, &file_info.dosDate) != |
| UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| unzlocal_DosDateToTmuDate(file_info.dosDate, &file_info.tmu_date); |
| |
| if (unzlocal_getLong(&s->z_filefunc, s->filestream, &file_info.crc) != |
| UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getLong |
| (&s->z_filefunc, s->filestream, &file_info.compressed_size) != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getLong |
| (&s->z_filefunc, s->filestream, &file_info.uncompressed_size) != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getShort |
| (&s->z_filefunc, s->filestream, &file_info.size_filename) != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getShort |
| (&s->z_filefunc, s->filestream, &file_info.size_file_extra) != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getShort |
| (&s->z_filefunc, s->filestream, &file_info.size_file_comment) != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getShort |
| (&s->z_filefunc, s->filestream, &file_info.disk_num_start) != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getShort(&s->z_filefunc, s->filestream, &file_info.internal_fa) |
| != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getLong(&s->z_filefunc, s->filestream, &file_info.external_fa) |
| != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getLong |
| (&s->z_filefunc, s->filestream, |
| &file_info_internal.offset_curfile) != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| lSeek += file_info.size_filename; |
| if ((err == UNZ_OK) && (szFileName)) |
| { |
| uLong uSizeRead; |
| if (file_info.size_filename < fileNameBufferSize) |
| { |
| *(szFileName + file_info.size_filename) = '\0'; |
| uSizeRead = file_info.size_filename; |
| } |
| else |
| uSizeRead = fileNameBufferSize; |
| |
| if ((file_info.size_filename > 0) && (fileNameBufferSize > 0)) |
| if (ZREAD(s->z_filefunc, s->filestream, szFileName, uSizeRead) != |
| uSizeRead) |
| err = UNZ_ERRNO; |
| lSeek -= uSizeRead; |
| } |
| |
| if ((err == UNZ_OK) && (extraField)) |
| { |
| uLong uSizeRead; |
| if (file_info.size_file_extra < extraFieldBufferSize) |
| uSizeRead = file_info.size_file_extra; |
| else |
| uSizeRead = extraFieldBufferSize; |
| |
| if (lSeek != 0) |
| { |
| if (ZSEEK |
| (s->z_filefunc, s->filestream, lSeek, |
| ZLIB_FILEFUNC_SEEK_CUR) == 0) |
| lSeek = 0; |
| else |
| err = UNZ_ERRNO; |
| } |
| if ((file_info.size_file_extra > 0) && (extraFieldBufferSize > 0)) |
| if (ZREAD(s->z_filefunc, s->filestream, extraField, uSizeRead) != |
| uSizeRead) |
| err = UNZ_ERRNO; |
| lSeek += file_info.size_file_extra - uSizeRead; |
| } |
| else |
| lSeek += file_info.size_file_extra; |
| |
| if ((err == UNZ_OK) && (szComment)) |
| { |
| uLong uSizeRead; |
| if (file_info.size_file_comment < commentBufferSize) |
| { |
| *(szComment + file_info.size_file_comment) = '\0'; |
| uSizeRead = file_info.size_file_comment; |
| } |
| else |
| uSizeRead = commentBufferSize; |
| |
| if (lSeek != 0) |
| { |
| if (ZSEEK |
| (s->z_filefunc, s->filestream, lSeek, |
| ZLIB_FILEFUNC_SEEK_CUR) == 0) |
| lSeek = 0; |
| else |
| err = UNZ_ERRNO; |
| } |
| if ((file_info.size_file_comment > 0) && (commentBufferSize > 0)) |
| if (ZREAD(s->z_filefunc, s->filestream, szComment, uSizeRead) != |
| uSizeRead) |
| err = UNZ_ERRNO; |
| lSeek += file_info.size_file_comment - uSizeRead; |
| } |
| else |
| lSeek += file_info.size_file_comment; |
| |
| if ((err == UNZ_OK) && (pfile_info)) |
| *pfile_info = file_info; |
| |
| if ((err == UNZ_OK) && (pfile_info_internal)) |
| *pfile_info_internal = file_info_internal; |
| |
| return err; |
| } |
| |
| /* |
| * Write info about the ZipFile in the *pglobal_info structure. |
| * No preparation of the structure is needed |
| * return UNZ_OK if there is no problem. |
| */ |
| extern int ZEXPORT |
| unzGetCurrentFileInfo( |
| unzFile file, |
| unz_file_info *pfile_info, |
| char *szFileName, |
| uLong fileNameBufferSize, |
| void *extraField, |
| uLong extraFieldBufferSize, |
| char *szComment, |
| uLong commentBufferSize) |
| { |
| return unzlocal_GetCurrentFileInfoInternal(file, pfile_info, NULL, |
| szFileName, fileNameBufferSize, |
| extraField, extraFieldBufferSize, |
| szComment, commentBufferSize); |
| } |
| |
| /* |
| * Set the current file of the zipfile to the first file. |
| * return UNZ_OK if there is no problem |
| */ |
| extern int ZEXPORT |
| unzGoToFirstFile( |
| unzFile file) |
| { |
| int err = UNZ_OK; |
| unz_s *s; |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| s->pos_in_central_dir = s->offset_central_dir; |
| s->num_file = 0; |
| err = unzlocal_GetCurrentFileInfoInternal(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; |
| } |
| |
| /* |
| * Set the current file of the zipfile to the next file. |
| * return UNZ_OK if there is no problem |
| * return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest. |
| */ |
| extern int ZEXPORT |
| unzGoToNextFile( |
| unzFile file) |
| { |
| unz_s *s; |
| int err; |
| |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| if (!s->current_file_ok) |
| return UNZ_END_OF_LIST_OF_FILE; |
| if (s->gi.number_entry != 0xffff) /* 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++; |
| err = unzlocal_GetCurrentFileInfoInternal(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; |
| } |
| |
| /* |
| * Try locate the file szFileName in the zipfile. |
| * For the iCaseSensitivity signification, see unzipStringFileNameCompare |
| * |
| * return value : |
| * UNZ_OK if the file is found. It becomes the current file. |
| * UNZ_END_OF_LIST_OF_FILE if the file is not found |
| */ |
| extern int ZEXPORT |
| unzLocateFile( |
| unzFile file, |
| const char *szFileName, |
| int iCaseSensitivity) |
| { |
| unz_s *s; |
| int err = 0; |
| |
| /* We remember the 'current' position in the file so that we can jump |
| * back there if we fail. |
| */ |
| unz_file_info cur_file_infoSaved; |
| unz_file_info_internal cur_file_info_internalSaved; |
| uLong num_fileSaved; |
| uLong pos_in_central_dirSaved; |
| |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| |
| if (strlen(szFileName) >= UNZ_MAXFILENAMEINZIP) |
| return UNZ_PARAMERROR; |
| |
| s = (unz_s *) file; |
| if (!s->current_file_ok) |
| return UNZ_END_OF_LIST_OF_FILE; |
| |
| /* Save the current state */ |
| num_fileSaved = s->num_file; |
| pos_in_central_dirSaved = s->pos_in_central_dir; |
| cur_file_infoSaved = s->cur_file_info; |
| cur_file_info_internalSaved = s->cur_file_info_internal; |
| |
| err = unzGoToFirstFile(file); |
| |
| while (err == UNZ_OK) |
| { |
| char szCurrentFileName[UNZ_MAXFILENAMEINZIP + 1]; |
| err = unzGetCurrentFileInfo(file, NULL, |
| szCurrentFileName, |
| sizeof(szCurrentFileName) - 1, NULL, 0, |
| NULL, 0); |
| if (err == UNZ_OK) |
| { |
| if (unzStringFileNameCompare(szCurrentFileName, |
| szFileName, iCaseSensitivity) == 0) |
| return UNZ_OK; |
| err = unzGoToNextFile(file); |
| } |
| } |
| |
| /* We failed, so restore the state of the 'current file' to where we |
| * were. |
| */ |
| s->num_file = num_fileSaved; |
| s->pos_in_central_dir = pos_in_central_dirSaved; |
| s->cur_file_info = cur_file_infoSaved; |
| s->cur_file_info_internal = cur_file_info_internalSaved; |
| return err; |
| } |
| |
| /* |
| * Contributed by Ryan Haksi (mailto://cryogen@infoserve.net) |
| * I need random access |
| * |
| * Further optimization could be realized by adding an ability |
| * to cache the directory in memory. The goal being a single |
| * comprehensive file read to put the file I need in a memory. |
| */ |
| |
| /* |
| typedef struct unz_file_pos_s |
| { |
| uLong pos_in_zip_directory; |
| uLong num_of_file; |
| } unz_file_pos; |
| */ |
| |
| extern int ZEXPORT |
| unzGetFilePos( |
| unzFile file, |
| unz_file_pos *file_pos) |
| { |
| unz_s *s; |
| |
| if (file == NULL || file_pos == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_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 |
| unzGoToFilePos( |
| unzFile file, |
| unz_file_pos *file_pos) |
| { |
| unz_s *s; |
| int err = 0; |
| |
| if (file == NULL || file_pos == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_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 = unzlocal_GetCurrentFileInfoInternal(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; |
| } |
| |
| /* |
| * Unzip Helper Functions - should be here? |
| */ |
| |
| /* |
| * 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) |
| */ |
| local int |
| unzlocal_CheckCurrentFileCoherencyHeader( |
| unz_s *s, |
| uInt *piSizeVar, |
| uLong *poffset_local_extrafield, |
| uInt *psize_local_extrafield) |
| { |
| uLong uMagic, |
| uData, |
| uFlags; |
| uLong size_filename; |
| uLong size_extra_field; |
| int err = UNZ_OK; |
| |
| *piSizeVar = 0; |
| *poffset_local_extrafield = 0; |
| *psize_local_extrafield = 0; |
| |
| if (ZSEEK |
| (s->z_filefunc, s->filestream, |
| s->cur_file_info_internal.offset_curfile + s->byte_before_the_zipfile, |
| ZLIB_FILEFUNC_SEEK_SET) != 0) |
| return UNZ_ERRNO; |
| |
| if (err == UNZ_OK) |
| { |
| if (unzlocal_getLong(&s->z_filefunc, s->filestream, &uMagic) != UNZ_OK) |
| err = UNZ_ERRNO; |
| else if (uMagic != 0x04034b50) |
| err = UNZ_BADZIPFILE; |
| } |
| |
| if (unzlocal_getShort(&s->z_filefunc, s->filestream, &uData) != UNZ_OK) |
| err = UNZ_ERRNO; |
| /* |
| * else if ((err==UNZ_OK) && (uData!=s->cur_file_info.wVersion)) |
| * err=UNZ_BADZIPFILE; |
| */ |
| if (unzlocal_getShort(&s->z_filefunc, s->filestream, &uFlags) != UNZ_OK) |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getShort(&s->z_filefunc, s->filestream, &uData) != UNZ_OK) |
| err = UNZ_ERRNO; |
| else if ((err == UNZ_OK) && (uData != s->cur_file_info.compression_method)) |
| err = UNZ_BADZIPFILE; |
| |
| if ((err == UNZ_OK) && (s->cur_file_info.compression_method != 0) && |
| (s->cur_file_info.compression_method != Z_DEFLATED)) |
| err = UNZ_BADZIPFILE; |
| |
| if (unzlocal_getLong(&s->z_filefunc, s->filestream, &uData) != UNZ_OK) /* date/time */ |
| err = UNZ_ERRNO; |
| |
| if (unzlocal_getLong(&s->z_filefunc, s->filestream, &uData) != UNZ_OK) /* crc */ |
| err = UNZ_ERRNO; |
| else if ((err == UNZ_OK) && (uData != s->cur_file_info.crc) && |
| ((uFlags & 8) == 0)) |
| err = UNZ_BADZIPFILE; |
| |
| if (unzlocal_getLong(&s->z_filefunc, s->filestream, &uData) != UNZ_OK) /* size compr */ |
| err = UNZ_ERRNO; |
| else if ((err == UNZ_OK) && (uData != s->cur_file_info.compressed_size) && |
| ((uFlags & 8) == 0)) |
| err = UNZ_BADZIPFILE; |
| |
| if (unzlocal_getLong(&s->z_filefunc, s->filestream, &uData) != UNZ_OK) /* size uncompr */ |
| err = UNZ_ERRNO; |
| else if ((err == UNZ_OK) && (uData != s->cur_file_info.uncompressed_size) && |
| ((uFlags & 8) == 0)) |
| err = UNZ_BADZIPFILE; |
| |
| if (unzlocal_getShort(&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; |
| |
| *piSizeVar += (uInt) size_filename; |
| |
| if (unzlocal_getShort(&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 = (uInt) size_extra_field; |
| |
| *piSizeVar += (uInt) 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) |
| { |
| int err = UNZ_OK; |
| uInt iSizeVar; |
| unz_s *s; |
| file_in_zip_read_info_s *pfile_in_zip_read_info; |
| uLong offset_local_extrafield; /* offset of the local extra field */ |
| uInt size_local_extrafield; /* size of the local extra field */ |
| # ifndef NOUNCRYPT |
| char source[12]; |
| # else |
| if (password) |
| return UNZ_PARAMERROR; |
| # endif |
| |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| if (!s->current_file_ok) |
| return UNZ_PARAMERROR; |
| |
| if (s->pfile_in_zip_read) |
| unzCloseCurrentFile(file); |
| |
| if (unzlocal_CheckCurrentFileCoherencyHeader(s, &iSizeVar, |
| &offset_local_extrafield, |
| &size_local_extrafield) != |
| UNZ_OK) |
| return UNZ_BADZIPFILE; |
| |
| pfile_in_zip_read_info = (file_in_zip_read_info_s *) |
| ALLOC(sizeof(file_in_zip_read_info_s)); |
| if (pfile_in_zip_read_info == NULL) |
| return UNZ_INTERNALERROR; |
| |
| pfile_in_zip_read_info->read_buffer = (char *) 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; |
| |
| if (method) |
| *method = (int) s->cur_file_info.compression_method; |
| |
| if (level) |
| { |
| *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 ((s->cur_file_info.compression_method != 0) && |
| (s->cur_file_info.compression_method != Z_DEFLATED)) |
| err = 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->compression_method = |
| s->cur_file_info.compression_method; |
| pfile_in_zip_read_info->filestream = s->filestream; |
| pfile_in_zip_read_info->z_filefunc = s->z_filefunc; |
| pfile_in_zip_read_info->byte_before_the_zipfile = |
| s->byte_before_the_zipfile; |
| |
| pfile_in_zip_read_info->stream.total_out = 0; |
| |
| if ((s->cur_file_info.compression_method == Z_DEFLATED) && (!raw)) |
| { |
| 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 = inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS); |
| if (err == Z_OK) |
| pfile_in_zip_read_info->stream_initialised = 1; |
| 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 + |
| iSizeVar; |
| |
| pfile_in_zip_read_info->stream.avail_in = (uInt) 0; |
| |
| s->pfile_in_zip_read = pfile_in_zip_read_info; |
| |
| # ifndef NOUNCRYPT |
| if (password) |
| { |
| int i = 0; |
| s->pcrc_32_tab = get_crc_table(); |
| init_keys(password, s->keys, s->pcrc_32_tab); |
| if (ZSEEK(s->z_filefunc, s->filestream, |
| s->pfile_in_zip_read->pos_in_zipfile + |
| s->pfile_in_zip_read->byte_before_the_zipfile, SEEK_SET) != 0) |
| return UNZ_INTERNALERROR; |
| if (ZREAD(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->pos_in_zipfile += 12; |
| s->encrypted = 1; |
| } |
| # 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 somes 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, |
| unsigned len) |
| { |
| int err = UNZ_OK; |
| uInt iRead = 0; |
| unz_s *s; |
| file_in_zip_read_info_s *pfile_in_zip_read_info; |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| pfile_in_zip_read_info = s->pfile_in_zip_read; |
| |
| if (pfile_in_zip_read_info == NULL) |
| return UNZ_PARAMERROR; |
| |
| if ((pfile_in_zip_read_info->read_buffer == NULL)) |
| return UNZ_END_OF_LIST_OF_FILE; |
| if (len == 0) |
| return 0; |
| |
| pfile_in_zip_read_info->stream.next_out = (Bytef *) buf; |
| |
| pfile_in_zip_read_info->stream.avail_out = (uInt) len; |
| |
| if ((len > pfile_in_zip_read_info->rest_read_uncompressed) && |
| (!(pfile_in_zip_read_info->raw))) |
| pfile_in_zip_read_info->stream.avail_out = |
| (uInt) pfile_in_zip_read_info->rest_read_uncompressed; |
| |
| if ((len > pfile_in_zip_read_info->rest_read_compressed + |
| pfile_in_zip_read_info->stream.avail_in) && |
| (pfile_in_zip_read_info->raw)) |
| pfile_in_zip_read_info->stream.avail_out = |
| (uInt) pfile_in_zip_read_info->rest_read_compressed + |
| pfile_in_zip_read_info->stream.avail_in; |
| |
| while (pfile_in_zip_read_info->stream.avail_out > 0) |
| { |
| if ((pfile_in_zip_read_info->stream.avail_in == 0) && |
| (pfile_in_zip_read_info->rest_read_compressed > 0)) |
| { |
| uInt uReadThis = UNZ_BUFSIZE; |
| if (pfile_in_zip_read_info->rest_read_compressed < uReadThis) |
| uReadThis = (uInt) pfile_in_zip_read_info->rest_read_compressed; |
| if (uReadThis == 0) |
| return UNZ_EOF; |
| if (ZSEEK(pfile_in_zip_read_info->z_filefunc, |
| pfile_in_zip_read_info->filestream, |
| pfile_in_zip_read_info->pos_in_zipfile + |
| pfile_in_zip_read_info->byte_before_the_zipfile, |
| ZLIB_FILEFUNC_SEEK_SET) != 0) |
| return UNZ_ERRNO; |
| if (ZREAD(pfile_in_zip_read_info->z_filefunc, |
| pfile_in_zip_read_info->filestream, |
| pfile_in_zip_read_info->read_buffer, |
| uReadThis) != uReadThis) |
| return UNZ_ERRNO; |
| |
| # ifndef NOUNCRYPT |
| if (s->encrypted) |
| { |
| uInt i; |
| for (i = 0; i < uReadThis; i++) |
| pfile_in_zip_read_info->read_buffer[i] = |
| (char)zdecode(s->keys, s->pcrc_32_tab, |
| pfile_in_zip_read_info->read_buffer[i]); |
| /* We are sure that the conversion is safe */ |
| } |
| # endif |
| |
| pfile_in_zip_read_info->pos_in_zipfile += uReadThis; |
| |
| pfile_in_zip_read_info->rest_read_compressed -= uReadThis; |
| |
| pfile_in_zip_read_info->stream.next_in = |
| (Bytef *) pfile_in_zip_read_info->read_buffer; |
| pfile_in_zip_read_info->stream.avail_in = (uInt) uReadThis; |
| } |
| |
| if ((pfile_in_zip_read_info->compression_method == 0) || |
| (pfile_in_zip_read_info->raw)) |
| { |
| uInt uDoCopy, |
| i; |
| |
| if ((pfile_in_zip_read_info->stream.avail_in == 0) && |
| (pfile_in_zip_read_info->rest_read_compressed == 0)) |
| return (iRead == 0) ? UNZ_EOF : iRead; |
| |
| if (pfile_in_zip_read_info->stream.avail_out < |
| pfile_in_zip_read_info->stream.avail_in) |
| uDoCopy = pfile_in_zip_read_info->stream.avail_out; |
| else |
| uDoCopy = pfile_in_zip_read_info->stream.avail_in; |
| |
| for (i = 0; i < uDoCopy; i++) |
| *(pfile_in_zip_read_info->stream.next_out + i) = |
| *(pfile_in_zip_read_info->stream.next_in + i); |
| |
| pfile_in_zip_read_info->crc32 = crc32(pfile_in_zip_read_info->crc32, |
| pfile_in_zip_read_info-> |
| stream.next_out, uDoCopy); |
| pfile_in_zip_read_info->rest_read_uncompressed -= uDoCopy; |
| pfile_in_zip_read_info->stream.avail_in -= uDoCopy; |
| pfile_in_zip_read_info->stream.avail_out -= uDoCopy; |
| pfile_in_zip_read_info->stream.next_out += uDoCopy; |
| pfile_in_zip_read_info->stream.next_in += uDoCopy; |
| pfile_in_zip_read_info->stream.total_out += uDoCopy; |
| iRead += uDoCopy; |
| } |
| else |
| { |
| uLong uTotalOutBefore, |
| uTotalOutAfter; |
| const Bytef *bufBefore; |
| uLong uOutThis; |
| int flush = Z_SYNC_FLUSH; |
| |
| uTotalOutBefore = pfile_in_zip_read_info->stream.total_out; |
| bufBefore = pfile_in_zip_read_info->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(&pfile_in_zip_read_info->stream, flush); |
| |
| if ((err >= 0) && (pfile_in_zip_read_info->stream.msg)) |
| err = Z_DATA_ERROR; |
| |
| uTotalOutAfter = pfile_in_zip_read_info->stream.total_out; |
| uOutThis = uTotalOutAfter - uTotalOutBefore; |
| |
| pfile_in_zip_read_info->crc32 = |
| crc32(pfile_in_zip_read_info->crc32, bufBefore, |
| (uInt) (uOutThis)); |
| |
| pfile_in_zip_read_info->rest_read_uncompressed -= uOutThis; |
| |
| iRead += (uInt) (uTotalOutAfter - uTotalOutBefore); |
| |
| if (err == Z_STREAM_END) |
| return (iRead == 0) ? UNZ_EOF : iRead; |
| if (err != Z_OK) |
| break; |
| } |
| } |
| |
| if (err == Z_OK) |
| return iRead; |
| return err; |
| } |
| |
| /* Give the current position in uncompressed data */ |
| extern z_off_t ZEXPORT |
| unztell( |
| unzFile file) |
| { |
| unz_s *s; |
| file_in_zip_read_info_s *pfile_in_zip_read_info; |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| pfile_in_zip_read_info = s->pfile_in_zip_read; |
| |
| if (pfile_in_zip_read_info == NULL) |
| return UNZ_PARAMERROR; |
| |
| return (z_off_t) pfile_in_zip_read_info->stream.total_out; |
| } |
| |
| /* return 1 if the end of file was reached, 0 elsewhere */ |
| extern int ZEXPORT |
| unzeof( |
| unzFile file) |
| { |
| unz_s *s; |
| file_in_zip_read_info_s *pfile_in_zip_read_info; |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| pfile_in_zip_read_info = s->pfile_in_zip_read; |
| |
| if (pfile_in_zip_read_info == NULL) |
| return UNZ_PARAMERROR; |
| |
| if (pfile_in_zip_read_info->rest_read_uncompressed == 0) |
| return 1; |
| else |
| return 0; |
| } |
| |
| /* |
| * Read extra field from the current file (opened by unzOpenCurrentFile) |
| * This is the local-header version of the extra field (sometimes, there is |
| * more info in the local-header version than in the central-header) |
| * |
| * if buf==NULL, it return the size of the local extra field that can be read |
| * |
| * if buf!=NULL, len is the size of the buffer, the extra header is copied in |
| * buf. |
| * the return value is the number of bytes copied in buf, or (if <0) |
| * the error code |
| */ |
| extern int ZEXPORT |
| unzGetLocalExtrafield( |
| unzFile file, |
| voidp buf, |
| unsigned len) |
| { |
| unz_s *s; |
| file_in_zip_read_info_s *pfile_in_zip_read_info; |
| uInt read_now; |
| uLong size_to_read; |
| |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| pfile_in_zip_read_info = s->pfile_in_zip_read; |
| |
| if (pfile_in_zip_read_info == NULL) |
| return UNZ_PARAMERROR; |
| |
| size_to_read = (pfile_in_zip_read_info->size_local_extrafield - |
| pfile_in_zip_read_info->pos_local_extrafield); |
| |
| if (buf == NULL) |
| return (int) size_to_read; |
| |
| if (len > size_to_read) |
| read_now = (uInt) size_to_read; |
| else |
| read_now = (uInt) len; |
| |
| if (read_now == 0) |
| return 0; |
| |
| if (ZSEEK(pfile_in_zip_read_info->z_filefunc, |
| pfile_in_zip_read_info->filestream, |
| pfile_in_zip_read_info->offset_local_extrafield + |
| pfile_in_zip_read_info->pos_local_extrafield, |
| ZLIB_FILEFUNC_SEEK_SET) != 0) |
| return UNZ_ERRNO; |
| |
| if (ZREAD(pfile_in_zip_read_info->z_filefunc, |
| pfile_in_zip_read_info->filestream, buf, read_now) != read_now) |
| return UNZ_ERRNO; |
| |
| return (int) read_now; |
| } |
| |
| /* |
| * Close the file in zip opened with unzipOpenCurrentFile |
| * Return UNZ_CRCERROR if all the file was read but the CRC is not good |
| */ |
| extern int ZEXPORT |
| unzCloseCurrentFile( |
| unzFile file) |
| { |
| int err = UNZ_OK; |
| |
| unz_s *s; |
| file_in_zip_read_info_s *pfile_in_zip_read_info; |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| pfile_in_zip_read_info = s->pfile_in_zip_read; |
| |
| if (pfile_in_zip_read_info == NULL) |
| return UNZ_PARAMERROR; |
| |
| 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) |
| inflateEnd(&pfile_in_zip_read_info->stream); |
| |
| pfile_in_zip_read_info->stream_initialised = 0; |
| TRYFREE(pfile_in_zip_read_info); |
| |
| s->pfile_in_zip_read = NULL; |
| |
| return err; |
| } |
| |
| /* |
| * Get the global comment string of the ZipFile, in the szComment buffer. |
| * uSizeBuf is the size of the szComment buffer. |
| * return the number of byte copied or an error code <0 |
| */ |
| extern int ZEXPORT |
| unzGetGlobalComment( |
| unzFile file, |
| char *szComment, |
| uLong uSizeBuf) |
| { |
| unz_s *s; |
| uLong uReadThis; |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| |
| uReadThis = uSizeBuf; |
| if (uReadThis > s->gi.size_comment) |
| uReadThis = s->gi.size_comment; |
| |
| if (ZSEEK |
| (s->z_filefunc, s->filestream, s->central_pos + 22, |
| ZLIB_FILEFUNC_SEEK_SET) != 0) |
| return UNZ_ERRNO; |
| |
| if (uReadThis > 0) |
| { |
| *szComment = '\0'; |
| if (ZREAD(s->z_filefunc, s->filestream, szComment, uReadThis) != |
| uReadThis) |
| return UNZ_ERRNO; |
| } |
| |
| if ((szComment) && (uSizeBuf > s->gi.size_comment)) |
| *(szComment + s->gi.size_comment) = '\0'; |
| return (int) uReadThis; |
| } |
| |
| /* Additions by RX '2004 */ |
| extern uLong ZEXPORT |
| unzGetOffset( |
| unzFile file) |
| { |
| unz_s *s; |
| |
| if (file == NULL) |
| return 0; |
| s = (unz_s *) file; |
| if (!s->current_file_ok) |
| return 0; |
| if (s->gi.number_entry != 0 && s->gi.number_entry != 0xffff) |
| if (s->num_file == s->gi.number_entry) |
| return 0; |
| return s->pos_in_central_dir; |
| } |
| |
| extern int ZEXPORT |
| unzSetOffset( |
| unzFile file, |
| uLong pos) |
| { |
| unz_s *s; |
| int err; |
| |
| if (file == NULL) |
| return UNZ_PARAMERROR; |
| s = (unz_s *) file; |
| |
| s->pos_in_central_dir = pos; |
| s->num_file = s->gi.number_entry; /* hack */ |
| err = unzlocal_GetCurrentFileInfoInternal(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; |
| } |
