зеркало из https://github.com/mozilla/pjs.git
1728 строки
41 KiB
C++
1728 строки
41 KiB
C++
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code,
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* released March 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Daniel Veditz <dveditz@netscape.com>
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* Samir Gehani <sgehani@netscape.com>
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* Mitch Stoltz <mstoltz@netscape.com>
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*/
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/*
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* This module implements a simple archive extractor for the PKZIP format.
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*
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* The underlying nsZipArchive is NOT thread-safe. Do not pass references
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* or pointers to it across thread boundaries.
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*/
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#ifndef STANDALONE
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#include "nsWildCard.h"
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#include "nscore.h"
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#include "prmem.h"
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#include "prio.h"
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#include "plstr.h"
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#include "prlog.h"
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#define ZFILE_CREATE PR_WRONLY | PR_CREATE_FILE
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#define READTYPE PRInt32
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#include "zlib.h"
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#include "nsISupportsUtils.h"
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#else /* STANDALONE */
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#ifdef XP_WIN
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#include "windows.h"
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#endif
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#undef MOZILLA_CLIENT // undoes prtypes damage in zlib.h
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#define ZFILE_CREATE "wb"
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#define READTYPE PRUint32
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#include "zlib.h"
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#undef PR_PUBLIC_API
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#include "zipstub.h"
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#ifdef XP_MAC
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#include <string.h>
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#include <stdlib.h>
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char * strdup(const char *src);
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char * strdup(const char *src)
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{
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long len = strlen(src);
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char *dup = (char *)malloc(len+1 * sizeof(char));
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memcpy(dup, src, len+1);
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return dup;
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}
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#endif
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#endif /* STANDALONE */
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#ifdef XP_UNIX
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#include <sys/stat.h>
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#include <limits.h>
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#include <unistd.h>
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#elif defined(XP_PC)
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#include <io.h>
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#endif
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#ifndef XP_UNIX /* we need to have some constant defined in limits.h and unistd.h */
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# ifndef S_IFMT
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# define S_IFMT 0170000
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# endif
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# ifndef S_IFLNK
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# define S_IFLNK 0120000
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# endif
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# ifndef PATH_MAX
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# define PATH_MAX 1024
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# endif
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#endif /* XP_UNIX */
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#include "zipfile.h"
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#include "zipstruct.h"
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#include "nsZipArchive.h"
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static PRUint16 xtoint(unsigned char *ii);
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static PRUint32 xtolong(unsigned char *ll);
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static PRUint16 ExtractMode(PRUint32 ext_attr);
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static PRBool IsSymlink(PRUint32 ext_attr);
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static void dosdate(char *aOutDateStr, PRUint16 aDate);
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static void dostime(char *aOutTimeStr, PRUint16 aTime);
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/*---------------------------------------------
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* C API wrapper for nsZipArchive
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*--------------------------------------------*/
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#ifdef STANDALONE
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/**
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* ZIP_OpenArchive
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*
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* opens the named zip/jar archive and returns a handle that
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* represents the archive in other ZIP_ calls.
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*
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* @param zipname archive filename
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* @param hZip receives handle if archive opened OK
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* @return status code
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*/
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PR_PUBLIC_API(PRInt32) ZIP_OpenArchive( const char * zipname, void** hZip )
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{
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PRInt32 status;
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/*--- error check args ---*/
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if ( hZip == 0 )
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return ZIP_ERR_PARAM;
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/*--- NULL output to prevent use by bozos who don't check errors ---*/
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*hZip = 0;
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/*--- create and open the archive ---*/
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nsZipArchive* zip = new nsZipArchive();
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if ( zip == 0 )
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return ZIP_ERR_MEMORY;
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status = zip->OpenArchive(zipname);
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if ( status == ZIP_OK )
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*hZip = NS_STATIC_CAST(void*,zip);
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else
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delete zip;
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return status;
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}
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/**
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* ZIP_TestArchive
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*
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* Tests the integrity of this open zip archive by extracting each
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* item to memory and performing a CRC check.
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*
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* @param hZip handle obtained from ZIP_OpenArchive
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* @return status code (success indicated by ZIP_OK)
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*/
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PR_PUBLIC_API(PRInt32) ZIP_TestArchive( void *hZip )
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{
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/*--- error check args ---*/
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if ( hZip == 0 )
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return ZIP_ERR_PARAM;
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nsZipArchive* zip = NS_STATIC_CAST(nsZipArchive*,hZip);
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if ( zip->kMagic != ZIP_MAGIC )
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return ZIP_ERR_PARAM; /* whatever it is isn't one of ours! */
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/*--- test the archive ---*/
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return zip->Test(NULL);
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}
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/**
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* ZIP_CloseArchive
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*
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* closes zip archive and frees memory
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* @param hZip handle obtained from ZIP_OpenArchive
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* @return status code
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*/
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PR_PUBLIC_API(PRInt32) ZIP_CloseArchive( void** hZip )
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{
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/*--- error check args ---*/
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if ( hZip == 0 || *hZip == 0 )
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return ZIP_ERR_PARAM;
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nsZipArchive* zip = NS_STATIC_CAST(nsZipArchive*,*hZip);
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if ( zip->kMagic != ZIP_MAGIC )
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return ZIP_ERR_PARAM; /* whatever it is isn't one of ours! */
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/*--- close the archive ---*/
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*hZip = 0;
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delete zip;
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return ZIP_OK;
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}
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/**
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* ZIP_ExtractFile
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*
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* extracts named file from an opened archive
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*
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* @param hZip handle obtained from ZIP_OpenArchive
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* @param filename name of file in archive
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* @param outname filename to extract to
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*/
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PR_PUBLIC_API(PRInt32) ZIP_ExtractFile( void* hZip, const char * filename, const char * outname )
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{
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/*--- error check args ---*/
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if ( hZip == 0 )
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return ZIP_ERR_PARAM;
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nsZipArchive* zip = NS_STATIC_CAST(nsZipArchive*,hZip);
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if ( zip->kMagic != ZIP_MAGIC )
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return ZIP_ERR_PARAM; /* whatever it is isn't one of ours! */
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/*--- extract the file ---*/
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return zip->ExtractFile( filename, outname );
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}
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/**
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* ZIP_FindInit
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*
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* Initializes an enumeration of files in the archive
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*
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* @param hZip handle obtained from ZIP_OpenArchive
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* @param pattern regexp to match files in archive, the usual shell expressions.
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* NULL pattern also matches all files, faster than "*"
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*/
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PR_PUBLIC_API(void*) ZIP_FindInit( void* hZip, const char * pattern )
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{
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/*--- error check args ---*/
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if ( hZip == 0 )
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return 0;
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nsZipArchive* zip = NS_STATIC_CAST(nsZipArchive*,hZip);
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if ( zip->kMagic != ZIP_MAGIC )
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return 0; /* whatever it is isn't one of ours! */
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/*--- initialize the pattern search ---*/
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return zip->FindInit( pattern );
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}
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/**
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* ZIP_FindNext
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*
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* Puts the next name in the passed buffer. Returns ZIP_ERR_SMALLBUF when
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* the name is too large for the buffer, and ZIP_ERR_FNF when there are no
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* more files that match the pattern
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*
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* @param hFind handle obtained from ZIP_FindInit
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* @param outbuf buffer to receive next filename
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* @param bufsize size of allocated buffer
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*/
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PR_PUBLIC_API(PRInt32) ZIP_FindNext( void* hFind, char * outbuf, PRUint16 bufsize )
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{
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PRInt32 status;
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/*--- error check args ---*/
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if ( hFind == 0 )
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return ZIP_ERR_PARAM;
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nsZipFind* find = NS_STATIC_CAST(nsZipFind*,hFind);
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if ( find->kMagic != ZIPFIND_MAGIC )
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return ZIP_ERR_PARAM; /* whatever it is isn't one of ours! */
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/*--- return next filename file ---*/
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nsZipItem* item;
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status = find->GetArchive()->FindNext( find, &item );
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if ( status == ZIP_OK )
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{
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if ( bufsize > item->namelen )
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{
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PL_strcpy( outbuf, item->name );
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}
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else
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status = ZIP_ERR_SMALLBUF;
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}
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return status;
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}
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/**
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* ZIP_FindFree
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*
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* Releases allocated memory associated with the find token
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*
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* @param hFind handle obtained from ZIP_FindInit
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*/
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PR_PUBLIC_API(PRInt32) ZIP_FindFree( void* hFind )
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{
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/*--- error check args ---*/
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if ( hFind == 0 )
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return ZIP_ERR_PARAM;
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nsZipFind* find = NS_STATIC_CAST(nsZipFind*,hFind);
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if ( find->kMagic != ZIPFIND_MAGIC )
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return ZIP_ERR_PARAM; /* whatever it is isn't one of ours! */
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/* free the find structure */
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return find->GetArchive()->FindFree( find );
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}
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#if defined XP_WIN
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void ProcessWindowsMessages()
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{
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MSG msg;
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while(PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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}
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#endif /* XP_WIN */
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#endif /* STANDALONE */
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//***********************************************************
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// nsZipArchive -- public methods
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//***********************************************************
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//---------------------------------------------
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// nsZipArchive::OpenArchive
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//---------------------------------------------
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PRInt32 nsZipArchive::OpenArchive( const char * aArchiveName )
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{
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//-- validate arguments
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if ( aArchiveName == 0 || *aArchiveName == '\0')
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return ZIP_ERR_PARAM;
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//-- not allowed to do two opens on the same object!
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if ( mFd != 0 )
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return ZIP_ERR_GENERAL;
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//-- open the physical file
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mFd = PR_Open( aArchiveName, PR_RDONLY, 0 );
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if ( mFd == 0 )
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return ZIP_ERR_DISK;
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//-- get table of contents for archive
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return BuildFileList();
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}
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PRInt32 nsZipArchive::OpenArchiveWithFileDesc(PRFileDesc* fd)
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{
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//-- validate arguments
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if (fd == 0)
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return ZIP_ERR_PARAM;
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//-- not allowed to do two opens on the same object!
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if ( mFd != 0 )
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return ZIP_ERR_GENERAL;
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mFd = fd;
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//-- get table of contents for archive
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return BuildFileList();
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}
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//---------------------------------------------
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// nsZipArchive::Test
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//---------------------------------------------
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PRInt32 nsZipArchive::Test(const char *aEntryName)
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{
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PRInt32 rv = ZIP_OK;
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nsZipItem *currItem = 0;
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if (aEntryName) // only test specified item
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{
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currItem = GetFileItem(aEntryName);
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if(!currItem)
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return ZIP_ERR_FNF;
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rv = TestItem(currItem);
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}
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else // test all items in archive
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{
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nsZipFind *iterator = FindInit( NULL );
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if (!iterator)
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return ZIP_ERR_GENERAL;
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// iterate over items in list
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while (ZIP_OK == FindNext(iterator, &currItem))
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{
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rv = TestItem(currItem);
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// check if crc check failed
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if (rv != ZIP_OK)
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break;
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#if defined STANDALONE && defined XP_WIN
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ProcessWindowsMessages();
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#endif
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}
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FindFree(iterator);
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}
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return rv;
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}
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//---------------------------------------------
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// nsZipArchive::CloseArchive
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//---------------------------------------------
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PRInt32 nsZipArchive::CloseArchive()
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{
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// close the file if open
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if ( mFd != 0 ) {
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PR_Close(mFd);
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mFd = 0;
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}
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// delete nsZipItems in table
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nsZipItem* pItem;
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for ( int i = 0; i < ZIP_TABSIZE; ++i)
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{
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pItem = mFiles[i];
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while ( pItem != 0 )
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{
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mFiles[i] = pItem->next;
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delete pItem;
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pItem = mFiles[i];
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}
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}
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return ZIP_OK;
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}
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//---------------------------------------------
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// nsZipArchive::GetItem
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//---------------------------------------------
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PRInt32 nsZipArchive::GetItem( const char * aFilename, nsZipItem **result)
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{
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//-- Parameter validity check
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if (aFilename == 0)
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return ZIP_ERR_PARAM;
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nsZipItem* item;
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//-- find file information
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item = GetFileItem( aFilename );
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if ( item == 0 )
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{
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return ZIP_ERR_FNF;
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}
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*result = item; // Return a pointer to the struct
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return ZIP_OK;
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}
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//---------------------------------------------
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// nsZipArchive::ReadInit
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//---------------------------------------------
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PRInt32 nsZipArchive::ReadInit(const char* zipEntry, nsZipRead** aRead)
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{
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//-- Parameter validity check
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if (zipEntry == 0 || aRead == 0)
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return ZIP_ERR_PARAM;
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PRInt32 result;
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//-- find item
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nsZipItem* item = GetFileItem(zipEntry);
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if (!item)
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return ZIP_ERR_FNF;
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//-- Create nsZipRead object
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*aRead = new nsZipRead(this, item);
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if (aRead == 0)
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return ZIP_ERR_MEMORY;
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//-- Read the item into memory
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// Inflate if necessary and save in mInflatedFileBuffer
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// for sequential reading.
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// (nsJAR needs the whole file in memory before passing it on)
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char* buf = (char*)PR_Malloc(item->realsize);
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if (!buf) return ZIP_ERR_MEMORY;
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switch(item->compression)
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{
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case DEFLATED:
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result = InflateItem(item, 0, buf);
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break;
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case STORED:
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result = CopyItemToBuffer(item, buf);
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break;
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default:
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return ZIP_ERR_UNSUPPORTED;
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}
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if (result == ZIP_OK)
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(*aRead)->mFileBuffer = buf;
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return result;
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}
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//------------------------------------------
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// nsZipArchive::Read
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//------------------------------------------
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PRInt32 nsZipArchive::Read(nsZipRead* aRead, char* aOutBuf,
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PRUint32 aCount, PRUint32* aBytesRead)
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{
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//-- Copies data from aRead->mFileBuffer
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//-- Parameter check
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if (aBytesRead == 0 || aRead == 0 || aOutBuf == 0 ||
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aRead->mArchive != this)
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return ZIP_ERR_PARAM;
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if(!aRead->mItem || !aRead->mFileBuffer)
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return ZIP_ERR_GENERAL;
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//-- Set up the copy
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PRUint32 bigBufSize = aRead->mItem->realsize;
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PRUint32 curPos = aRead->mCurPos;
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*aBytesRead = (curPos + aCount) < bigBufSize ? aCount : bigBufSize - curPos;
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char* src = aRead->mFileBuffer + curPos;
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//-- Do the copy and record number of bytes copied
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memcpy(aOutBuf, src, *aBytesRead);
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aRead->mCurPos += *aBytesRead;
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return ZIP_OK;
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}
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//---------------------------------------------
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// nsZipArchive::Available
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//---------------------------------------------
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PRUint32 nsZipArchive::Available(nsZipRead* aRead)
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{
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if (aRead == 0)
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return 0;
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nsZipItem* item = aRead->mItem;
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if (item->compression == DEFLATED)
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return item->realsize - aRead->mCurPos;
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else
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return item->size - aRead->mCurPos;
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}
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//---------------------------------------------
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// nsZipArchive::ExtractFile
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//---------------------------------------------
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PRInt32 nsZipArchive::ExtractFile(const char* zipEntry, const char* aOutname)
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{
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PRFileDesc* fOut = PR_Open(aOutname, ZFILE_CREATE, 0644);
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if (fOut == 0)
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return ZIP_ERR_DISK;
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nsZipItem *item = 0;
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PRInt32 status = ExtractFileToFileDesc(zipEntry, fOut, &item);
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PR_Close(fOut);
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if (status != ZIP_OK)
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{
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PR_Delete(aOutname);
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}
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#if defined(XP_UNIX)
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else
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{
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if (item->isSymlink)
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{
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status = ResolveSymlink(aOutname,item);
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}
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//-- set extracted file permissions
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chmod(aOutname, item->mode);
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}
|
|
#endif
|
|
return status;
|
|
}
|
|
|
|
PRInt32
|
|
nsZipArchive::ExtractFileToFileDesc(const char * zipEntry, PRFileDesc* outFD,
|
|
nsZipItem **outItem)
|
|
{
|
|
//-- sanity check arguments
|
|
if ( zipEntry == 0 || outFD == 0 || outItem == 0)
|
|
return ZIP_ERR_PARAM;
|
|
|
|
PRInt32 status;
|
|
|
|
//-- Find item in archive
|
|
nsZipItem* item = GetFileItem( zipEntry );
|
|
if (!item)
|
|
return ZIP_ERR_FNF;
|
|
|
|
//-- extract the file using the appropriate method
|
|
switch( item->compression )
|
|
{
|
|
case STORED:
|
|
status = CopyItemToDisk( item, outFD );
|
|
break;
|
|
|
|
case DEFLATED:
|
|
status = InflateItem( item, outFD, 0 );
|
|
break;
|
|
|
|
default:
|
|
//-- unsupported compression type
|
|
return ZIP_ERR_UNSUPPORTED;
|
|
}
|
|
|
|
*outItem = item;
|
|
return status;
|
|
}
|
|
|
|
|
|
//---------------------------------------------
|
|
// nsZipArchive::FindInit
|
|
//---------------------------------------------
|
|
nsZipFind* nsZipArchive::FindInit( const char * aPattern )
|
|
{
|
|
PRBool regExp = PR_FALSE;
|
|
char* pattern = 0;
|
|
|
|
// validate the pattern
|
|
if ( aPattern )
|
|
{
|
|
switch (NS_WildCardValid( (char*)aPattern ))
|
|
{
|
|
case INVALID_SXP:
|
|
return 0;
|
|
|
|
case NON_SXP:
|
|
regExp = PR_FALSE;
|
|
break;
|
|
|
|
case VALID_SXP:
|
|
regExp = PR_TRUE;
|
|
break;
|
|
|
|
default:
|
|
// undocumented return value from RegExpValid!
|
|
PR_ASSERT( PR_FALSE );
|
|
return 0;
|
|
}
|
|
|
|
pattern = PL_strdup( aPattern );
|
|
if ( !pattern )
|
|
return 0;
|
|
}
|
|
|
|
return new nsZipFind( this, pattern, regExp );
|
|
}
|
|
|
|
|
|
|
|
//---------------------------------------------
|
|
// nsZipArchive::FindNext
|
|
//---------------------------------------------
|
|
PRInt32 nsZipArchive::FindNext( nsZipFind* aFind, nsZipItem** aResult)
|
|
{
|
|
PRInt32 status;
|
|
PRBool found = PR_FALSE;
|
|
PRUint16 slot = aFind->mSlot;
|
|
nsZipItem* item = aFind->mItem;
|
|
|
|
if ( aFind->mArchive != this )
|
|
return ZIP_ERR_PARAM;
|
|
|
|
// we start from last match, look for next
|
|
while ( slot < ZIP_TABSIZE && !found )
|
|
{
|
|
if ( item != 0 )
|
|
item = item->next; // move to next in current chain
|
|
else
|
|
item = mFiles[slot]; // starting a new slot
|
|
|
|
if ( item == 0 )
|
|
{ // no more in this chain, move to next slot
|
|
++slot;
|
|
continue;
|
|
}
|
|
else if ( aFind->mPattern == 0 )
|
|
found = PR_TRUE; // always match
|
|
else if ( aFind->mRegExp )
|
|
found = (NS_WildCardMatch( item->name, aFind->mPattern, PR_FALSE ) == MATCH);
|
|
else
|
|
#if defined(STANDALONE) && defined(XP_MAC)
|
|
// simulate <regexp>* matches
|
|
found = ( strncmp( item->name, aFind->mPattern, strlen(aFind->mPattern) ) == 0 );
|
|
#else
|
|
found = ( PL_strcmp( item->name, aFind->mPattern ) == 0 );
|
|
#endif
|
|
}
|
|
|
|
if ( found )
|
|
{
|
|
*aResult = item;
|
|
aFind->mSlot = slot;
|
|
aFind->mItem = item;
|
|
status = ZIP_OK;
|
|
}
|
|
else
|
|
status = ZIP_ERR_FNF;
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
|
|
//---------------------------------------------
|
|
// nsZipArchive::FindFree
|
|
//---------------------------------------------
|
|
PRInt32 nsZipArchive::FindFree( nsZipFind* aFind )
|
|
{
|
|
if ( aFind->mArchive != this )
|
|
return ZIP_ERR_PARAM;
|
|
|
|
delete aFind;
|
|
return ZIP_OK;
|
|
}
|
|
|
|
#ifdef XP_UNIX
|
|
//---------------------------------------------
|
|
// nsZipArchive::ResolveSymlink
|
|
//---------------------------------------------
|
|
PRInt32 nsZipArchive::ResolveSymlink(const char *path, nsZipItem *item)
|
|
{
|
|
PRInt32 status = ZIP_OK;
|
|
if (item->isSymlink)
|
|
{
|
|
char buf[PATH_MAX+1];
|
|
PRFileDesc * fIn = PR_Open(path, PR_RDONLY, 0644);
|
|
if (fIn)
|
|
{
|
|
PRInt32 length = PATH_MAX;
|
|
length = PR_Read(fIn,(void*)buf,length);
|
|
PR_Close(fIn);
|
|
fIn = 0;
|
|
if ( length <= 0
|
|
|| (buf[length] = 0, PR_Delete(path)) != 0
|
|
|| symlink(buf, path) != 0 )
|
|
{
|
|
status = ZIP_ERR_DISK;
|
|
}
|
|
} else {
|
|
status = ZIP_ERR_DISK;
|
|
}
|
|
if (fIn)
|
|
{
|
|
PR_Close(fIn);
|
|
}
|
|
}
|
|
return status;
|
|
}
|
|
#endif
|
|
|
|
//***********************************************************
|
|
// nsZipArchive -- private implementation
|
|
//***********************************************************
|
|
|
|
#define BR_BUF_SIZE 1024 /* backward read buffer size */
|
|
|
|
//---------------------------------------------
|
|
// nsZipArchive::BuildFileList
|
|
//---------------------------------------------
|
|
PRInt32 nsZipArchive::BuildFileList()
|
|
{
|
|
PRInt32 status = ZIP_OK;
|
|
PRUint8 buf[4*BR_BUF_SIZE];
|
|
|
|
ZipEnd *End;
|
|
|
|
//-----------------------------------------------------------------------
|
|
// locate the central directory via the End record
|
|
//-----------------------------------------------------------------------
|
|
PRInt32 pos = 0L;
|
|
PRInt32 bufsize = 0;
|
|
|
|
//-- get archive size using end pos
|
|
pos = PR_Seek(mFd, 0, PR_SEEK_END);
|
|
#ifndef STANDALONE
|
|
if (pos <= 0)
|
|
#else
|
|
if (pos || ((pos = ftell(mFd)) <= 0))
|
|
#endif
|
|
status = ZIP_ERR_CORRUPT;
|
|
|
|
while (status == ZIP_OK)
|
|
{
|
|
//-- read backwards in 1K-sized chunks (unless file is less than 1K)
|
|
pos > BR_BUF_SIZE ? bufsize = BR_BUF_SIZE : bufsize = pos;
|
|
pos -= bufsize;
|
|
|
|
if ( !ZIP_Seek( mFd, pos, PR_SEEK_SET ) )
|
|
{
|
|
status = ZIP_ERR_CORRUPT;
|
|
break;
|
|
}
|
|
|
|
if ( PR_Read( mFd, buf, bufsize ) != (READTYPE)bufsize )
|
|
{
|
|
status = ZIP_ERR_CORRUPT;
|
|
break;
|
|
}
|
|
|
|
//-- scan for ENDSIG
|
|
PRUint8 *endp = buf + bufsize;
|
|
PRUint32 endsig;
|
|
PRBool bEndsigFound = PR_FALSE;
|
|
|
|
for (endp -= sizeof(ZipEnd); endp >= buf; endp--)
|
|
{
|
|
endsig = xtolong(endp);
|
|
if (endsig == ENDSIG)
|
|
{
|
|
bEndsigFound = PR_TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (bEndsigFound)
|
|
{
|
|
End = (ZipEnd *) endp;
|
|
|
|
//-- set pos to start of central directory
|
|
pos = xtolong(End->offset_central_dir);
|
|
if ( !ZIP_Seek( mFd, pos, PR_SEEK_SET ) )
|
|
status = ZIP_ERR_CORRUPT;
|
|
|
|
break;
|
|
}
|
|
|
|
if(pos <= 0)
|
|
//-- We're at the beginning of the file, and still no sign
|
|
//-- of the end signiture. File must be corrupted!
|
|
status = ZIP_ERR_CORRUPT;
|
|
|
|
//-- backward read must overlap ZipEnd length
|
|
pos += sizeof(ZipEnd);
|
|
|
|
} /* while looking for end signature */
|
|
|
|
|
|
//-------------------------------------------------------
|
|
// read the central directory headers
|
|
//-------------------------------------------------------
|
|
if ( status == ZIP_OK )
|
|
{
|
|
//-- we think we found the central directory, read in the first chunk
|
|
pos = 0;
|
|
bufsize = PR_Read( mFd, &buf, sizeof(buf) );
|
|
if (bufsize < sizeof(ZipCentral) + sizeof(ZipEnd))
|
|
{
|
|
// We know we read the end sig and got pointed at the central
|
|
// directory--there should be at least this much
|
|
//
|
|
// (technically there can be a completely empty archive with only a
|
|
// ZipEnd structure; that's pointless and might as well be an error.)
|
|
status = ZIP_ERR_DISK;
|
|
}
|
|
|
|
//-- verify it's a central directory record
|
|
if ( xtolong( buf ) != CENTRALSIG )
|
|
status = ZIP_ERR_CORRUPT;
|
|
}
|
|
|
|
//-- loop through directory records
|
|
//
|
|
//-- we enter the loop positioned at a central directory record
|
|
//-- with enough valid data in the buffer to contain one
|
|
while ( status == ZIP_OK )
|
|
{
|
|
//-------------------------------------------------------
|
|
// read the fixed-size data
|
|
//-------------------------------------------------------
|
|
ZipCentral* central = (ZipCentral*)(buf+pos);
|
|
|
|
PRUint32 namelen = xtoint( central->filename_len );
|
|
PRUint32 extralen = xtoint( central->extrafield_len );
|
|
PRUint32 commentlen = xtoint( central->commentfield_len );
|
|
|
|
nsZipItem* item = new nsZipItem();
|
|
if (!item)
|
|
{
|
|
status = ZIP_ERR_MEMORY;
|
|
break;
|
|
}
|
|
|
|
item->namelen = namelen;
|
|
item->headerloc = xtolong( central->localhdr_offset );
|
|
item->compression = xtoint( central->method );
|
|
item->size = xtolong( central->size );
|
|
item->realsize = xtolong( central->orglen );
|
|
item->crc32 = xtolong( central->crc32 );
|
|
PRUint32 external_attributes = xtolong( central->external_attributes );
|
|
item->mode = ExtractMode( external_attributes );
|
|
item->isSymlink = IsSymlink( external_attributes );
|
|
item->time = xtoint( central->time );
|
|
item->date = xtoint( central->date );
|
|
|
|
pos += sizeof(ZipCentral);
|
|
|
|
//-------------------------------------------------------
|
|
// get the item name
|
|
//-------------------------------------------------------
|
|
item->name = new char[namelen + 1];
|
|
if ( !item->name )
|
|
{
|
|
status = ZIP_ERR_MEMORY;
|
|
delete item;
|
|
break;
|
|
}
|
|
|
|
PRUint32 leftover = (PRUint32)(bufsize - pos);
|
|
if ( leftover < namelen )
|
|
{
|
|
//-- not enough data left in buffer for the name.
|
|
//-- move leftover to top of buffer and read more
|
|
memcpy( buf, buf+pos, leftover );
|
|
bufsize = leftover + PR_Read( mFd, buf+leftover, bufsize-leftover );
|
|
pos = 0;
|
|
|
|
//-- make sure we were able to read enough
|
|
if ( (PRUint32)bufsize < namelen )
|
|
{
|
|
status = ZIP_ERR_CORRUPT;
|
|
break;
|
|
}
|
|
}
|
|
memcpy( item->name, buf+pos, namelen );
|
|
item->name[namelen] = 0;
|
|
|
|
//-- add item to file table
|
|
PRUint32 hash = HashName( item->name );
|
|
item->next = mFiles[hash];
|
|
mFiles[hash] = item;
|
|
|
|
pos += namelen;
|
|
|
|
//-------------------------------------------------------
|
|
// set up to process the next item at the top of loop
|
|
//-------------------------------------------------------
|
|
leftover = (PRUint32)(bufsize - pos);
|
|
if ( leftover < (extralen + commentlen + sizeof(ZipCentral)) )
|
|
{
|
|
//-- not enough data left to process at top of loop.
|
|
//-- move leftover and read more
|
|
memcpy( buf, buf+pos, leftover );
|
|
bufsize = leftover + PR_Read( mFd, buf+leftover, bufsize-leftover );
|
|
pos = 0;
|
|
}
|
|
//-- set position to start of next ZipCentral record
|
|
pos += extralen + commentlen;
|
|
|
|
PRUint32 sig = xtolong( buf+pos );
|
|
if ( sig != CENTRALSIG )
|
|
{
|
|
//-- we must be done or else archive is corrupt
|
|
if ( sig != ENDSIG )
|
|
status = ZIP_ERR_CORRUPT;
|
|
break;
|
|
}
|
|
|
|
//-- make sure we've read enough
|
|
if ( bufsize < pos + sizeof(ZipCentral) )
|
|
{
|
|
status = ZIP_ERR_CORRUPT;
|
|
break;
|
|
}
|
|
} /* while reading central directory records */
|
|
|
|
return status;
|
|
}
|
|
|
|
//---------------------------------------------
|
|
// nsZipArchive::GetFileItem
|
|
//---------------------------------------------
|
|
nsZipItem* nsZipArchive::GetFileItem( const char * zipEntry )
|
|
{
|
|
PR_ASSERT( zipEntry != 0 );
|
|
|
|
nsZipItem* item = mFiles[ HashName(zipEntry) ];
|
|
|
|
for ( ; item != 0; item = item->next )
|
|
{
|
|
if ( 0 == PL_strcmp( zipEntry, item->name ) )
|
|
break; //-- found it
|
|
}
|
|
|
|
return item;
|
|
}
|
|
|
|
|
|
//---------------------------------------------
|
|
// nsZipArchive::HashName
|
|
//---------------------------------------------
|
|
PRUint32 nsZipArchive::HashName( const char* aName )
|
|
{
|
|
PRUint32 val = 0;
|
|
PRUint8* c;
|
|
|
|
PR_ASSERT( aName != 0 );
|
|
|
|
for ( c = (PRUint8*)aName; *c != 0; c++ ) {
|
|
val = val*37 + *c;
|
|
}
|
|
|
|
return (val % ZIP_TABSIZE);
|
|
}
|
|
|
|
//---------------------------------------------
|
|
// nsZipArchive::SeekToItem
|
|
//---------------------------------------------
|
|
PRInt32 nsZipArchive::SeekToItem(const nsZipItem* aItem)
|
|
{
|
|
PR_ASSERT (aItem);
|
|
|
|
//-- the first time an item is used we need to calculate its offset
|
|
if ( aItem->offset == 0 )
|
|
{
|
|
//-- read local header to extract local extralen
|
|
//-- NOTE: extralen is different in central header and local header
|
|
//-- for archives created using the Unix "zip" utility. To set
|
|
//-- the offset accurately we need the local extralen.
|
|
if ( !ZIP_Seek( mFd, aItem->headerloc, PR_SEEK_SET ) )
|
|
return ZIP_ERR_CORRUPT;
|
|
|
|
ZipLocal Local;
|
|
if ( PR_Read(mFd, (char*)&Local, sizeof(ZipLocal)) != (READTYPE)sizeof(ZipLocal)
|
|
|| xtolong( Local.signature ) != LOCALSIG )
|
|
{
|
|
//-- read error or local header not found
|
|
return ZIP_ERR_CORRUPT;
|
|
}
|
|
|
|
((nsZipItem*)aItem)->offset = aItem->headerloc + sizeof(Local) +
|
|
xtoint( Local.filename_len ) +
|
|
xtoint( Local.extrafield_len );
|
|
}
|
|
|
|
//-- move to start of file in archive
|
|
if ( !ZIP_Seek( mFd, aItem->offset, PR_SEEK_SET ) )
|
|
return ZIP_ERR_CORRUPT;
|
|
|
|
return ZIP_OK;
|
|
}
|
|
|
|
//---------------------------------------------
|
|
// nsZipArchive::CopyItemToBuffer
|
|
//---------------------------------------------
|
|
PRInt32 nsZipArchive::CopyItemToBuffer(const nsZipItem* aItem, char* aOutBuf)
|
|
{
|
|
PR_ASSERT(aOutBuf != 0 && aItem != 0);
|
|
|
|
//-- move to the start of file's data
|
|
if ( SeekToItem( aItem ) != ZIP_OK )
|
|
return ZIP_ERR_CORRUPT;
|
|
|
|
//-- Read from file
|
|
PRUint32 actual = PR_Read( mFd, aOutBuf, aItem->realsize);
|
|
if (actual != aItem->realsize)
|
|
return ZIP_ERR_CORRUPT;
|
|
|
|
//-- verify crc32
|
|
PRUint32 calculatedCRC = crc32(0L, Z_NULL, 0);
|
|
calculatedCRC = crc32( calculatedCRC,(const unsigned char*)aOutBuf,
|
|
aItem->realsize);
|
|
if (calculatedCRC != aItem->crc32)
|
|
return ZIP_ERR_CORRUPT;
|
|
return ZIP_OK;
|
|
}
|
|
|
|
|
|
//---------------------------------------------
|
|
// nsZipArchive::CopyItemToDisk
|
|
//---------------------------------------------
|
|
PRInt32 nsZipArchive::CopyItemToDisk(const nsZipItem* aItem, PRFileDesc* fOut)
|
|
{
|
|
PRInt32 status = ZIP_OK;
|
|
PRUint32 chunk, pos, size, crc;
|
|
|
|
PR_ASSERT( aItem != 0 && fOut != 0 );
|
|
|
|
//-- move to the start of file's data
|
|
if ( SeekToItem( aItem ) != ZIP_OK )
|
|
return ZIP_ERR_CORRUPT;
|
|
|
|
char* buf = (char*)PR_Malloc(ZIP_BUFLEN);
|
|
if ( buf == 0 )
|
|
return ZIP_ERR_MEMORY;
|
|
|
|
//-- initialize crc
|
|
crc = crc32(0L, Z_NULL, 0);
|
|
|
|
//-- copy chunks until file is done
|
|
size = aItem->size;
|
|
for ( pos=0; pos < size; pos += chunk )
|
|
{
|
|
chunk = (pos+ZIP_BUFLEN <= size) ? ZIP_BUFLEN : size - pos;
|
|
|
|
if ( PR_Read( mFd, buf, chunk ) != (READTYPE)chunk )
|
|
{
|
|
//-- unexpected end of data in archive
|
|
status = ZIP_ERR_CORRUPT;
|
|
break;
|
|
}
|
|
|
|
//-- incrementally update crc32
|
|
crc = crc32(crc, (const unsigned char*)buf, chunk);
|
|
|
|
if ( PR_Write( fOut, buf, chunk ) < (READTYPE)chunk )
|
|
{
|
|
//-- Couldn't write all the data (disk full?)
|
|
status = ZIP_ERR_DISK;
|
|
break;
|
|
}
|
|
}
|
|
|
|
//-- verify crc32
|
|
if ( (status == ZIP_OK) && (crc != aItem->crc32) )
|
|
status = ZIP_ERR_CORRUPT;
|
|
|
|
PR_FREEIF( buf );
|
|
return status;
|
|
}
|
|
|
|
|
|
//---------------------------------------------
|
|
// nsZipArchive::InflateItem
|
|
//---------------------------------------------
|
|
PRInt32 nsZipArchive::InflateItem( const nsZipItem* aItem, PRFileDesc* fOut,
|
|
char* bigBuf )
|
|
/*
|
|
* This function either inflates an archive item to disk, to the
|
|
* file specified by aOutname, or into a buffer specified by
|
|
* bigBuf. bigBuf then gets copied into the "real" output
|
|
* buffer a chunk at a time by ReadInflatedItem(). Memory-wise,
|
|
* this is inefficient, since it stores an entire copy of the
|
|
* decompressed item in memory, then copies it to the caller's
|
|
* buffer. A more memory-efficient implementation is possible,
|
|
* in which the outbuf in this function could be returned
|
|
* directly, but implementing it would be complex.
|
|
*/
|
|
{
|
|
PRInt32 status = ZIP_OK;
|
|
PRUint32 chunk, inpos, outpos, size, crc;
|
|
PRUint32 bigBufSize;
|
|
z_stream zs;
|
|
int zerr;
|
|
PRBool bInflating = PR_FALSE;
|
|
PRBool bRead;
|
|
PRBool bWrote;
|
|
PRBool bToFile;
|
|
Bytef* old_next_out;
|
|
|
|
// -- if aOutname is null, we'll be writing to a buffer instead of a file
|
|
if (fOut != 0)
|
|
{
|
|
PR_ASSERT( aItem != 0 );
|
|
bToFile = PR_TRUE;
|
|
}
|
|
else
|
|
{
|
|
// -- Writing to a buffer, so bigBuf must not be null.
|
|
PR_ASSERT( aItem != 0 && bigBuf != 0 );
|
|
bToFile = PR_FALSE;
|
|
bigBufSize = aItem->realsize;
|
|
}
|
|
|
|
//-- move to the start of file's data
|
|
if ( SeekToItem( aItem ) != ZIP_OK )
|
|
return ZIP_ERR_CORRUPT;
|
|
|
|
//-- allocate deflation buffers
|
|
Bytef *inbuf = (Bytef*)PR_Malloc(ZIP_BUFLEN);
|
|
Bytef *outbuf = (Bytef*)PR_Malloc(ZIP_BUFLEN);
|
|
if ( inbuf == 0 || outbuf == 0 )
|
|
{
|
|
status = ZIP_ERR_MEMORY;
|
|
goto cleanup;
|
|
}
|
|
|
|
//-- set up the inflate
|
|
memset( &zs, 0, sizeof(zs) );
|
|
zerr = inflateInit2( &zs, -MAX_WBITS );
|
|
if ( zerr != Z_OK )
|
|
{
|
|
status = ZIP_ERR_GENERAL;
|
|
goto cleanup;
|
|
}
|
|
bInflating = PR_TRUE;
|
|
|
|
|
|
//-- inflate loop
|
|
size = aItem->size;
|
|
outpos = inpos = 0;
|
|
zs.next_out = outbuf;
|
|
zs.avail_out = ZIP_BUFLEN;
|
|
crc = crc32(0L, Z_NULL, 0);
|
|
while ( zerr == Z_OK )
|
|
{
|
|
bRead = PR_FALSE;
|
|
bWrote = PR_FALSE;
|
|
|
|
if ( zs.avail_in == 0 && zs.total_in < size )
|
|
{
|
|
//-- no data to inflate yet still more in file:
|
|
//-- read another chunk of compressed data
|
|
|
|
inpos = zs.total_in; // input position
|
|
chunk = ( inpos + ZIP_BUFLEN <= size ) ? ZIP_BUFLEN : size - inpos;
|
|
|
|
if ( PR_Read( mFd, inbuf, chunk ) != (READTYPE)chunk )
|
|
{
|
|
//-- unexpected end of data
|
|
status = ZIP_ERR_CORRUPT;
|
|
break;
|
|
}
|
|
|
|
zs.next_in = inbuf;
|
|
zs.avail_in = chunk;
|
|
bRead = PR_TRUE;
|
|
}
|
|
|
|
if ( zs.avail_out == 0 )
|
|
{
|
|
if (bToFile)
|
|
{
|
|
//-- write inflated buffer to disk and make space
|
|
if ( PR_Write( fOut, outbuf, ZIP_BUFLEN ) < ZIP_BUFLEN )
|
|
{
|
|
//-- Couldn't write all the data (disk full?)
|
|
status = ZIP_ERR_DISK;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
//-- copy inflated buffer to our big buffer
|
|
// Assertion makes sure we don't overflow bigBuf
|
|
PR_ASSERT( outpos + ZIP_BUFLEN <= bigBufSize);
|
|
char* copyStart = bigBuf + outpos;
|
|
memcpy(copyStart, outbuf, ZIP_BUFLEN);
|
|
}
|
|
|
|
outpos = zs.total_out;
|
|
zs.next_out = outbuf;
|
|
zs.avail_out = ZIP_BUFLEN;
|
|
bWrote = PR_TRUE;
|
|
}
|
|
|
|
if(bRead || bWrote)
|
|
{
|
|
old_next_out = zs.next_out;
|
|
|
|
zerr = inflate( &zs, Z_PARTIAL_FLUSH );
|
|
|
|
//-- incrementally update crc32
|
|
crc = crc32(crc, (const unsigned char*)old_next_out, zs.next_out - old_next_out);
|
|
}
|
|
else
|
|
zerr = Z_STREAM_END;
|
|
|
|
#if defined STANDALONE && defined XP_WIN
|
|
ProcessWindowsMessages();
|
|
#endif
|
|
} // while
|
|
|
|
//-- verify crc32
|
|
if ( (status == ZIP_OK) && (crc != aItem->crc32) )
|
|
{
|
|
status = ZIP_ERR_CORRUPT;
|
|
goto cleanup;
|
|
}
|
|
|
|
//-- write last inflated bit to disk
|
|
if ( zerr == Z_STREAM_END && outpos < zs.total_out )
|
|
{
|
|
chunk = zs.total_out - outpos;
|
|
if (bToFile)
|
|
{
|
|
if ( PR_Write( fOut, outbuf, chunk ) < (READTYPE)chunk )
|
|
status = ZIP_ERR_DISK;
|
|
}
|
|
else
|
|
{
|
|
PR_ASSERT( (outpos + chunk) <= bigBufSize );
|
|
char* copyStart = bigBuf + outpos;
|
|
memcpy(copyStart, outbuf, chunk);
|
|
}
|
|
}
|
|
|
|
//-- convert zlib error to return value
|
|
if ( status == ZIP_OK && zerr != Z_OK && zerr != Z_STREAM_END )
|
|
{
|
|
status = (zerr == Z_MEM_ERROR) ? ZIP_ERR_MEMORY : ZIP_ERR_CORRUPT;
|
|
}
|
|
|
|
//-- if found no errors make sure we've converted the whole thing
|
|
PR_ASSERT( status != ZIP_OK || zs.total_in == aItem->size );
|
|
PR_ASSERT( status != ZIP_OK || zs.total_out == aItem->realsize );
|
|
|
|
cleanup:
|
|
if ( bInflating )
|
|
{
|
|
//-- free zlib internal state
|
|
inflateEnd( &zs );
|
|
}
|
|
|
|
PR_FREEIF( inbuf );
|
|
PR_FREEIF( outbuf );
|
|
return status;
|
|
}
|
|
|
|
//---------------------------------------------
|
|
// nsZipArchive::TestItem
|
|
//---------------------------------------------
|
|
PRInt32 nsZipArchive::TestItem( const nsZipItem* aItem )
|
|
{
|
|
Bytef *inbuf = NULL, *outbuf = NULL, *old_next_out;
|
|
PRUint32 size, chunk=0, inpos, crc;
|
|
PRInt32 status = ZIP_OK;
|
|
int zerr = Z_OK;
|
|
z_stream zs;
|
|
PRBool bInflating = PR_FALSE;
|
|
PRBool bRead;
|
|
PRBool bWrote;
|
|
|
|
//-- param checks
|
|
if (!aItem)
|
|
return ZIP_ERR_PARAM;
|
|
if (aItem->compression != STORED && aItem->compression != DEFLATED)
|
|
return ZIP_ERR_UNSUPPORTED;
|
|
|
|
//-- move to the start of file's data
|
|
if ( SeekToItem( aItem ) != ZIP_OK )
|
|
return ZIP_ERR_CORRUPT;
|
|
|
|
//-- allocate buffers
|
|
inbuf = (Bytef *) PR_Malloc(ZIP_BUFLEN);
|
|
if (aItem->compression == DEFLATED)
|
|
outbuf = (Bytef *) PR_Malloc(ZIP_BUFLEN);
|
|
|
|
if ( inbuf == 0 || (aItem->compression == DEFLATED && outbuf == 0) )
|
|
{
|
|
status = ZIP_ERR_MEMORY;
|
|
goto cleanup;
|
|
}
|
|
|
|
//-- set up the inflate if DEFLATED
|
|
if (aItem->compression == DEFLATED)
|
|
{
|
|
memset( &zs, 0, sizeof(zs) );
|
|
zerr = inflateInit2( &zs, -MAX_WBITS );
|
|
if ( zerr != Z_OK )
|
|
{
|
|
status = ZIP_ERR_GENERAL;
|
|
goto cleanup;
|
|
}
|
|
else
|
|
{
|
|
zs.next_out = outbuf;
|
|
zs.avail_out = ZIP_BUFLEN;
|
|
}
|
|
bInflating = PR_TRUE;
|
|
}
|
|
|
|
//-- initialize crc checksum
|
|
crc = crc32(0L, Z_NULL, 0);
|
|
|
|
size = aItem->size;
|
|
inpos = 0;
|
|
|
|
//-- read in ZIP_BUFLEN-sized chunks of item
|
|
//-- inflating if item is DEFLATED
|
|
while ( zerr == Z_OK )
|
|
{
|
|
bRead = PR_FALSE; // used to check if new data to inflate
|
|
bWrote = PR_FALSE; // used to reset zs.next_out to outbuf
|
|
// when outbuf fills up
|
|
|
|
//-- read to inbuf
|
|
if (aItem->compression == DEFLATED)
|
|
{
|
|
if ( zs.avail_in == 0 && zs.total_in < size )
|
|
{
|
|
//-- no data to inflate yet still more in file:
|
|
//-- read another chunk of compressed data
|
|
|
|
inpos = zs.total_in; // input position
|
|
chunk = ( inpos + ZIP_BUFLEN <= size ) ? ZIP_BUFLEN : size - inpos;
|
|
|
|
if ( PR_Read( mFd, inbuf, chunk ) != (READTYPE)chunk )
|
|
{
|
|
//-- unexpected end of data
|
|
status = ZIP_ERR_CORRUPT;
|
|
break;
|
|
}
|
|
|
|
zs.next_in = inbuf;
|
|
zs.avail_in = chunk;
|
|
bRead = PR_TRUE;
|
|
}
|
|
|
|
if ( zs.avail_out == 0 )
|
|
{
|
|
//-- reuse output buffer
|
|
zs.next_out = outbuf;
|
|
zs.avail_out = ZIP_BUFLEN;
|
|
bWrote = PR_TRUE; // mimic writing to disk/memory
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (inpos < size)
|
|
{
|
|
//-- read a chunk in
|
|
chunk = ( inpos + ZIP_BUFLEN <= size ) ? ZIP_BUFLEN : size - inpos;
|
|
|
|
if ( PR_Read( mFd, inbuf, chunk ) != (READTYPE)chunk )
|
|
{
|
|
//-- unexpected end of data
|
|
status = ZIP_ERR_CORRUPT;
|
|
break;
|
|
}
|
|
|
|
inpos += chunk;
|
|
}
|
|
else
|
|
{
|
|
//-- finished reading STORED item
|
|
break;
|
|
}
|
|
}
|
|
|
|
//-- inflate if item is DEFLATED
|
|
if (aItem->compression == DEFLATED)
|
|
{
|
|
if (bRead || bWrote)
|
|
{
|
|
old_next_out = zs.next_out;
|
|
|
|
zerr = inflate( &zs, Z_PARTIAL_FLUSH );
|
|
|
|
//-- incrementally update crc checksum
|
|
crc = crc32(crc, (const unsigned char*)old_next_out, zs.next_out - old_next_out);
|
|
}
|
|
else
|
|
zerr = Z_STREAM_END;
|
|
}
|
|
//-- else just use input buffer containing data from STORED item
|
|
else
|
|
{
|
|
//-- incrementally update crc checksum
|
|
crc = crc32(crc, (const unsigned char*)inbuf, chunk);
|
|
}
|
|
}
|
|
|
|
//-- convert zlib error to return value
|
|
if ( status == ZIP_OK && zerr != Z_OK && zerr != Z_STREAM_END )
|
|
{
|
|
status = (zerr == Z_MEM_ERROR) ? ZIP_ERR_MEMORY : ZIP_ERR_CORRUPT;
|
|
goto cleanup;
|
|
}
|
|
|
|
//-- verify computed crc checksum against header info crc
|
|
if (status == ZIP_OK && crc != aItem->crc32)
|
|
{
|
|
status = ZIP_ERR_CORRUPT;
|
|
}
|
|
|
|
cleanup:
|
|
if ( bInflating )
|
|
{
|
|
//-- free zlib internal state
|
|
inflateEnd( &zs );
|
|
}
|
|
|
|
PR_FREEIF(inbuf);
|
|
if (aItem->compression == DEFLATED)
|
|
PR_FREEIF(outbuf);
|
|
|
|
return status;
|
|
}
|
|
|
|
//------------------------------------------
|
|
// nsZipArchive constructor and destructor
|
|
//------------------------------------------
|
|
|
|
MOZ_DECL_CTOR_COUNTER(nsZipArchive)
|
|
|
|
nsZipArchive::nsZipArchive()
|
|
: kMagic(ZIP_MAGIC), mFd(0)
|
|
{
|
|
MOZ_COUNT_CTOR(nsZipArchive);
|
|
|
|
// initialize the table to NULL
|
|
for ( int i = 0; i < ZIP_TABSIZE; ++i) {
|
|
mFiles[i] = 0;
|
|
}
|
|
|
|
}
|
|
|
|
nsZipArchive::~nsZipArchive()
|
|
{
|
|
(void)CloseArchive();
|
|
|
|
MOZ_COUNT_DTOR(nsZipArchive);
|
|
}
|
|
|
|
|
|
|
|
|
|
//------------------------------------------
|
|
// nsZipItem constructor and destructor
|
|
//------------------------------------------
|
|
|
|
MOZ_DECL_CTOR_COUNTER(nsZipItem)
|
|
|
|
nsZipItem::nsZipItem() : name(0), offset(0), next(0)
|
|
{
|
|
MOZ_COUNT_CTOR(nsZipItem);
|
|
}
|
|
|
|
nsZipItem::~nsZipItem()
|
|
{
|
|
if (name != 0 )
|
|
{
|
|
delete [] name;
|
|
name = 0;
|
|
}
|
|
|
|
MOZ_COUNT_DTOR(nsZipItem);
|
|
}
|
|
|
|
//------------------------------------------
|
|
// nsZipRead constructor and destructor
|
|
//------------------------------------------
|
|
|
|
MOZ_DECL_CTOR_COUNTER(nsZipRead)
|
|
|
|
nsZipRead::nsZipRead( nsZipArchive* aZipArchive, nsZipItem* aZipItem )
|
|
: mArchive(aZipArchive),
|
|
mItem(aZipItem),
|
|
mCurPos(0),
|
|
mFileBuffer(0)
|
|
{
|
|
MOZ_COUNT_CTOR(nsZipRead);
|
|
}
|
|
|
|
nsZipRead::~nsZipRead()
|
|
{
|
|
PR_FREEIF(mFileBuffer);
|
|
|
|
MOZ_COUNT_DTOR(nsZipRead);
|
|
}
|
|
|
|
//------------------------------------------
|
|
// nsZipFind constructor and destructor
|
|
//------------------------------------------
|
|
|
|
MOZ_DECL_CTOR_COUNTER(nsZipFind)
|
|
|
|
nsZipFind::nsZipFind( nsZipArchive* aZip, char* aPattern, PRBool aRegExp )
|
|
: kMagic(ZIPFIND_MAGIC),
|
|
mArchive(aZip),
|
|
mPattern(aPattern),
|
|
mSlot(0),
|
|
mItem(0),
|
|
mRegExp(aRegExp)
|
|
{
|
|
MOZ_COUNT_CTOR(nsZipFind);
|
|
}
|
|
|
|
nsZipFind::~nsZipFind()
|
|
{
|
|
if (mPattern != 0 )
|
|
PL_strfree( mPattern );
|
|
|
|
MOZ_COUNT_DTOR(nsZipFind);
|
|
}
|
|
|
|
//------------------------------------------
|
|
// nsZipFind::GetArchive
|
|
//------------------------------------------
|
|
nsZipArchive* nsZipFind::GetArchive()
|
|
{
|
|
if (!mArchive)
|
|
return NULL;
|
|
|
|
return mArchive;
|
|
}
|
|
|
|
|
|
//------------------------------------------
|
|
// helper functions
|
|
//------------------------------------------
|
|
|
|
/*
|
|
* x t o i n t
|
|
*
|
|
* Converts a two byte ugly endianed integer
|
|
* to our platform's integer.
|
|
*/
|
|
static PRUint16 xtoint (unsigned char *ii)
|
|
{
|
|
return (PRUint16) ((ii [0]) | (ii [1] << 8));
|
|
}
|
|
|
|
/*
|
|
* x t o l o n g
|
|
*
|
|
* Converts a four byte ugly endianed integer
|
|
* to our platform's integer.
|
|
*/
|
|
static PRUint32 xtolong (unsigned char *ll)
|
|
{
|
|
PRUint32 ret;
|
|
|
|
ret = (
|
|
(((PRUint32) ll [0]) << 0) |
|
|
(((PRUint32) ll [1]) << 8) |
|
|
(((PRUint32) ll [2]) << 16) |
|
|
(((PRUint32) ll [3]) << 24)
|
|
);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* ExtractMode
|
|
*
|
|
* Extracts bits 17-24 from a 32-bit unsigned long
|
|
* representation of the external attributes field.
|
|
* Subsequently it tacks on the implicit user-read
|
|
* bit.
|
|
*/
|
|
static PRUint16 ExtractMode(PRUint32 ext_attr)
|
|
{
|
|
ext_attr &= 0x00FF0000;
|
|
ext_attr >>= 16;
|
|
ext_attr |= 0x00000100;
|
|
|
|
return (PRUint16) ext_attr;
|
|
}
|
|
|
|
|
|
/*
|
|
*
|
|
* Return true if the attributes are for a symbolic link
|
|
*
|
|
*/
|
|
|
|
static PRBool IsSymlink(PRUint32 ext_attr)
|
|
{
|
|
return (((ext_attr>>16) & S_IFMT) == S_IFLNK) ? PR_TRUE : PR_FALSE;
|
|
}
|
|
|
|
/*
|
|
* d o s d a t e
|
|
*
|
|
* Based on standard MS-DOS format date.
|
|
* Tweaked to be Y2K compliant and NSPR friendly.
|
|
*/
|
|
static void dosdate (char *aOutDateStr, PRUint16 aDate)
|
|
{
|
|
PRUint16 y2kCompliantYear = (aDate >> 9) + 1980;
|
|
|
|
sprintf (aOutDateStr, "%02d/%02d/%02d",
|
|
((aDate >> 5) & 0x0F), (aDate & 0x1F), y2kCompliantYear);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* d o s t i m e
|
|
*
|
|
* Standard MS-DOS format time.
|
|
*/
|
|
static void dostime (char *aOutTimeStr, PRUint16 aTime)
|
|
{
|
|
sprintf (aOutTimeStr, "%02d:%02d",
|
|
((aTime >> 11) & 0x1F), ((aTime >> 5) & 0x3F));
|
|
|
|
return;
|
|
}
|
|
|
|
char *
|
|
nsZipItem::GetModTime()
|
|
{
|
|
char *timestr; /* e.g. 21:07 */
|
|
char *datestr; /* e.g. 06/20/1995 */
|
|
char *nsprstr; /* e.g. 06/20/1995 21:07 */
|
|
/* NSPR bug parsing dd/mm/yyyy hh:mm */
|
|
/* so we use mm/dd/yyyy hh:mm */
|
|
|
|
timestr = (char *) PR_Malloc(6 * sizeof(char));
|
|
datestr = (char *) PR_Malloc(11 * sizeof(char));
|
|
nsprstr = (char *) PR_Malloc(17 * sizeof(char));
|
|
if (!timestr || !datestr || !nsprstr)
|
|
{
|
|
PR_FREEIF(timestr);
|
|
PR_FREEIF(datestr);
|
|
PR_FREEIF(nsprstr);
|
|
return 0;
|
|
}
|
|
|
|
memset(timestr, 0, 6);
|
|
memset(datestr, 0, 11);
|
|
memset(nsprstr, 0, 17);
|
|
|
|
dosdate(datestr, this->date);
|
|
dostime(timestr, this->time);
|
|
|
|
sprintf(nsprstr, "%s %s", datestr, timestr);
|
|
|
|
PR_FREEIF(timestr);
|
|
PR_FREEIF(datestr);
|
|
|
|
return nsprstr;
|
|
}
|
|
|