Index: third_party/zlib/contrib/minizip/unzip.c |
=================================================================== |
--- third_party/zlib/contrib/minizip/unzip.c (revision 0) |
+++ third_party/zlib/contrib/minizip/unzip.c (revision 0) |
@@ -0,0 +1,1598 @@ |
+/* unzip.c -- IO for uncompress .zip files using zlib |
+ Version 1.01e, February 12th, 2005 |
+ |
+ Copyright (C) 1998-2005 Gilles Vollant |
+ |
+ Read 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 "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 "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(pzlib_filefunc_def,filestream,pi) |
+ 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 (pzlib_filefunc_def,filestream,pX) |
+ const zlib_filefunc_def* pzlib_filefunc_def; |
+ voidpf filestream; |
+ uLong *pX; |
+{ |
+ uLong x ; |
+ int i; |
+ int err; |
+ |
+ 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 (pzlib_filefunc_def,filestream,pX) |
+ const zlib_filefunc_def* pzlib_filefunc_def; |
+ voidpf filestream; |
+ uLong *pX; |
+{ |
+ uLong x ; |
+ int i; |
+ int err; |
+ |
+ 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 (fileName1,fileName2) |
+ 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 (fileName1,fileName2,iCaseSensitivity) |
+ 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(pzlib_filefunc_def,filestream) |
+ 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; |
+ 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 (path, pzlib_filefunc_def) |
+ 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 (path) |
+ 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 (file) |
+ unzFile file; |
+{ |
+ unz_s* s; |
+ if (file==NULL) |
+ return UNZ_PARAMERROR; |
+ s=(unz_s*)file; |
+ |
+ if (s->pfile_in_zip_read!=NULL) |
+ 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 (file,pglobal_info) |
+ 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 (ulDosDate, ptm) |
+ 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 (file, |
+ pfile_info, |
+ pfile_info_internal, |
+ szFileName, fileNameBufferSize, |
+ extraField, extraFieldBufferSize, |
+ szComment, commentBufferSize) |
+ 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; |
+ 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!=NULL)) |
+ { |
+ 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!=NULL)) |
+ { |
+ 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!=NULL)) |
+ { |
+ 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!=NULL)) |
+ *pfile_info=file_info; |
+ |
+ if ((err==UNZ_OK) && (pfile_info_internal!=NULL)) |
+ *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 (file, |
+ pfile_info, |
+ szFileName, fileNameBufferSize, |
+ extraField, extraFieldBufferSize, |
+ szComment, commentBufferSize) |
+ 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 (file) |
+ 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 (file) |
+ 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 (file, szFileName, iCaseSensitivity) |
+ unzFile file; |
+ const char *szFileName; |
+ int iCaseSensitivity; |
+{ |
+ unz_s* s; |
+ int err; |
+ |
+ /* 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; // offset in file |
+ uLong num_of_file; // # of file |
+} unz_file_pos; |
+*/ |
+ |
+extern int ZEXPORT unzGetFilePos(file, file_pos) |
+ 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(file, file_pos) |
+ unzFile file; |
+ unz_file_pos* file_pos; |
+{ |
+ unz_s* s; |
+ int err; |
+ |
+ 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 (s,piSizeVar, |
+ poffset_local_extrafield, |
+ psize_local_extrafield) |
+ 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 (file, method, level, raw, password) |
+ 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 != NULL) |
+ 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 != NULL) |
+ 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!=NULL) |
+ *method = (int)s->cur_file_info.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 ((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 != NULL) |
+ { |
+ int i; |
+ 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 (file) |
+ unzFile file; |
+{ |
+ return unzOpenCurrentFile3(file, NULL, NULL, 0, NULL); |
+} |
+ |
+extern int ZEXPORT unzOpenCurrentFilePassword (file, password) |
+ unzFile file; |
+ const char* password; |
+{ |
+ return unzOpenCurrentFile3(file, NULL, NULL, 0, password); |
+} |
+ |
+extern int ZEXPORT unzOpenCurrentFile2 (file,method,level,raw) |
+ 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 (file, buf, len) |
+ 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] = |
+ zdecode(s->keys,s->pcrc_32_tab, |
+ pfile_in_zip_read_info->read_buffer[i]); |
+ } |
+# 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!=NULL)) |
+ 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 (file) |
+ 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 (file) |
+ 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 (file,buf,len) |
+ 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 (file) |
+ 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 (file, szComment, uSizeBuf) |
+ unzFile file; |
+ char *szComment; |
+ uLong uSizeBuf; |
+{ |
+ int err=UNZ_OK; |
+ 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 != NULL) && (uSizeBuf > s->gi.size_comment)) |
+ *(szComment+s->gi.size_comment)='\0'; |
+ return (int)uReadThis; |
+} |
+ |
+/* Additions by RX '2004 */ |
+extern uLong ZEXPORT unzGetOffset (file) |
+ unzFile file; |
+{ |
+ unz_s* s; |
+ |
+ if (file==NULL) |
+ return UNZ_PARAMERROR; |
+ 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 (file, pos) |
+ 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; |
+} |
Property changes on: third_party\zlib\contrib\minizip\unzip.c |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |