gecko-dev/modules/libjar/nsJAR.h

234 lines
7.0 KiB
C++

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Don Bragg <dbragg@netscape.com>
* Samir Gehani <sgehani@netscape.com>
* Mitch Stoltz <mstoltz@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsJAR_h__
#define nsJAR_h__
#include "nscore.h"
#include "pratom.h"
#include "prmem.h"
#include "prio.h"
#include "plstr.h"
#include "prlog.h"
#include "prtypes.h"
#include "prinrval.h"
#include "nsIComponentManager.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "nsIFile.h"
#include "nsIEnumerator.h"
#include "nsVoidArray.h"
#include "nsHashtable.h"
#include "nsAutoLock.h"
#include "nsIZipReader.h"
#include "nsIJAR.h"
#include "nsZipArchive.h"
#include "zipfile.h"
#include "nsIPrincipal.h"
#include "nsISignatureVerifier.h"
#include "nsIObserverService.h"
#include "nsWeakReference.h"
#include "nsIObserver.h"
class nsIInputStream;
class nsJARManifestItem;
class nsZipReaderCache;
/*-------------------------------------------------------------------------
* Class nsJAR declaration.
* nsJAR serves as an XPCOM wrapper for nsZipArchive with the addition of
* JAR manifest file parsing.
*------------------------------------------------------------------------*/
class nsJAR : public nsIZipReader, public nsIJAR
{
// Allows nsJARInputStream to call the verification functions
friend class nsJARInputStream;
public:
nsJAR();
virtual ~nsJAR();
NS_DEFINE_STATIC_CID_ACCESSOR( NS_ZIPREADER_CID );
NS_DECL_ISUPPORTS
NS_DECL_NSIZIPREADER
NS_DECL_NSIJAR
PRIntervalTime GetReleaseTime() {
return mReleaseTime;
}
PRBool IsReleased() {
return mReleaseTime != PR_INTERVAL_NO_TIMEOUT;
}
void SetReleaseTime() {
mReleaseTime = PR_IntervalNow();
}
void ClearReleaseTime() {
mReleaseTime = PR_INTERVAL_NO_TIMEOUT;
}
void SetZipReaderCache(nsZipReaderCache* cache) {
mCache = cache;
}
PRFileDesc* OpenFile();
protected:
//-- Private data members
nsCOMPtr<nsIFile> mZipFile; // The zip/jar file on disk
nsZipArchive mZip; // The underlying zip archive
nsObjectHashtable mManifestData; // Stores metadata for each entry
PRBool mParsedManifest; // True if manifest has been parsed
nsCOMPtr<nsIPrincipal> mPrincipal; // The entity which signed this file
PRInt16 mGlobalStatus; // Global signature verification status
PRIntervalTime mReleaseTime; // used by nsZipReaderCache for flushing entries
nsZipReaderCache* mCache; // if cached, this points to the cache it's contained in
PRLock* mLock;
PRInt32 mTotalItemsInManifest;
PRFileDesc* mFd;
//-- Private functions
nsresult ParseManifest(nsISignatureVerifier* verifier);
void ReportError(const char* aFilename, PRInt16 errorCode);
nsresult LoadEntry(const char* aFilename, char** aBuf,
PRUint32* aBufLen = nsnull);
PRInt32 ReadLine(const char** src);
nsresult ParseOneFile(nsISignatureVerifier* verifier,
const char* filebuf, PRInt16 aFileType);
nsresult VerifyEntry(nsISignatureVerifier* verifier,
nsJARManifestItem* aEntry, const char* aEntryData,
PRUint32 aLen);
nsresult CalculateDigest(const char* aInBuf, PRUint32 aInBufLen,
char** digest);
//-- Debugging
void DumpMetadata(const char* aMessage);
};
/**
* nsJARItem
*
* An individual JAR entry. A set of nsJARItems macthing a
* supplied pattern are returned in a nsJAREnumerator.
*/
class nsJARItem : public nsIZipEntry
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIZIPENTRY
void Init(nsZipItem* aZipItem);
nsJARItem();
virtual ~nsJARItem();
private:
nsZipItem* mZipItem;
};
/**
* nsJAREnumerator
*
* Enumerates a list of files in a zip archive
* (based on a pattern match in its member nsZipFind).
*/
class nsJAREnumerator : public nsISimpleEnumerator
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSISIMPLEENUMERATOR
nsJAREnumerator(nsZipFind *aFind);
virtual ~nsJAREnumerator();
protected:
nsZipArchive *mArchive; // pointer extracted from mFind for efficiency
nsZipFind *mFind;
nsZipItem *mCurr; // raw pointer to an nsZipItem owned by mArchive -- DON'T delete
PRBool mIsCurrStale;
};
////////////////////////////////////////////////////////////////////////////////
#if defined(DEBUG_warren) || defined(DEBUG_jband)
#define ZIP_CACHE_HIT_RATE
#endif
class nsZipReaderCache : public nsIZipReaderCache, public nsIObserver,
public nsSupportsWeakReference
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIZIPREADERCACHE
NS_DECL_NSIOBSERVER
nsZipReaderCache();
virtual ~nsZipReaderCache();
nsresult ReleaseZip(nsJAR* reader);
protected:
PRLock* mLock;
PRInt32 mCacheSize;
nsSupportsHashtable mZips;
#ifdef ZIP_CACHE_HIT_RATE
PRUint32 mZipCacheLookups;
PRUint32 mZipCacheHits;
PRUint32 mZipCacheFlushes;
PRUint32 mZipSyncMisses;
#endif
};
////////////////////////////////////////////////////////////////////////////////
#endif /* nsJAR_h__ */