mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-07-02 23:40:42 +02:00
206 lines
6.6 KiB
C++
206 lines
6.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/* ***** 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.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* 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 nsPermissionManager_h__
|
|
#define nsPermissionManager_h__
|
|
|
|
#include "nsIPermissionManager.h"
|
|
#include "nsIObserver.h"
|
|
#include "nsIObserverService.h"
|
|
#include "nsWeakReference.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIFile.h"
|
|
#include "nsTHashtable.h"
|
|
#include "nsString.h"
|
|
#include "nsITimer.h"
|
|
|
|
class nsIPermission;
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// This allow us 8 types of permissions, with 256 values for each
|
|
// permission (some types might want to prompt, block 3rd party etc).
|
|
// Note that nsIPermissionManager.idl only allows 16 values for permission,
|
|
// and that nsPermissionManager::Write() can only deal with 26 values of
|
|
// permission safely. (We allow space for 256 here, since it's faster to
|
|
// deal with bytes than with bits).
|
|
// Note: When changing NUMBER_OF_TYPES, also update PermissionsAreEmpty()
|
|
// and the constructors.
|
|
// This should be a multiple of 4, to make PermissionsAreEmpty() fast
|
|
#define NUMBER_OF_TYPES (8)
|
|
#define NUMBER_OF_PERMISSIONS (16)
|
|
|
|
class nsHostEntry : public PLDHashEntryHdr
|
|
{
|
|
public:
|
|
// Hash methods
|
|
typedef const char* KeyType;
|
|
typedef const char* KeyTypePointer;
|
|
|
|
nsHostEntry(const char* aHost);
|
|
nsHostEntry(const nsHostEntry& toCopy);
|
|
|
|
~nsHostEntry()
|
|
{
|
|
}
|
|
|
|
KeyType GetKey() const
|
|
{
|
|
return mHost;
|
|
}
|
|
|
|
KeyTypePointer GetKeyPointer() const
|
|
{
|
|
return mHost;
|
|
}
|
|
|
|
PRBool KeyEquals(KeyTypePointer aKey) const
|
|
{
|
|
return !strcmp(mHost, aKey);
|
|
}
|
|
|
|
static KeyTypePointer KeyToPointer(KeyType aKey)
|
|
{
|
|
return aKey;
|
|
}
|
|
|
|
static PLDHashNumber HashKey(KeyTypePointer aKey)
|
|
{
|
|
// PL_DHashStringKey doesn't use the table parameter, so we can safely
|
|
// pass nsnull
|
|
return PL_DHashStringKey(nsnull, aKey);
|
|
}
|
|
|
|
enum { ALLOW_MEMMOVE = PR_TRUE };
|
|
|
|
// Permissions methods
|
|
inline const nsDependentCString GetHost() const
|
|
{
|
|
return nsDependentCString(mHost);
|
|
}
|
|
|
|
// Callers must do boundary checks
|
|
void SetPermission(PRInt32 aTypeIndex, PRUint32 aPermission)
|
|
{
|
|
mPermissions[aTypeIndex] = (PRUint8)aPermission;
|
|
}
|
|
|
|
PRUint32 GetPermission(PRInt32 aTypeIndex) const
|
|
{
|
|
return (PRUint32)mPermissions[aTypeIndex];
|
|
}
|
|
|
|
PRBool PermissionsAreEmpty() const
|
|
{
|
|
// Cast to PRUint32, to make this faster. Only 2 checks instead of 8
|
|
return (*NS_REINTERPRET_CAST(const PRUint32*, &mPermissions[0])==0 &&
|
|
*NS_REINTERPRET_CAST(const PRUint32*, &mPermissions[4])==0 );
|
|
}
|
|
|
|
private:
|
|
const char *mHost;
|
|
|
|
// This will contain the permissions for different types, in a bitmasked
|
|
// form. The type itself defines the position.
|
|
// One byte per permission. This is a small loss of memory (as 255 types
|
|
// of action per type is a lot, 16 would be enough), but will improve speed
|
|
// Bytemasking is around twice as fast (on one arch at least) than bitmasking
|
|
PRUint8 mPermissions[NUMBER_OF_TYPES];
|
|
};
|
|
|
|
|
|
class nsPermissionManager : public nsIPermissionManager,
|
|
public nsIObserver,
|
|
public nsSupportsWeakReference
|
|
{
|
|
public:
|
|
|
|
// nsISupports
|
|
NS_DECL_ISUPPORTS
|
|
NS_DECL_NSIPERMISSIONMANAGER
|
|
NS_DECL_NSIOBSERVER
|
|
|
|
nsPermissionManager();
|
|
virtual ~nsPermissionManager();
|
|
nsresult Init();
|
|
|
|
private:
|
|
|
|
nsresult AddInternal(const nsAFlatCString &aHost,
|
|
PRInt32 aTypeIndex,
|
|
PRUint32 aPermission,
|
|
PRBool aNotify);
|
|
PRInt32 GetTypeIndex(const char *aTypeString,
|
|
PRBool aAdd);
|
|
|
|
nsHostEntry *GetHostEntry(const nsAFlatCString &aHost,
|
|
PRUint32 aType);
|
|
|
|
// Use LazyWrite to save the permissions file on a timer. It will write
|
|
// the file only once if repeatedly hammered quickly.
|
|
void LazyWrite();
|
|
static void DoLazyWrite(nsITimer *aTimer, void *aClosure);
|
|
nsresult Write();
|
|
|
|
nsresult Read();
|
|
void NotifyObserversWithPermission(const nsACString &aHost,
|
|
const char *aType,
|
|
PRUint32 aPermission,
|
|
const PRUnichar *aData);
|
|
void NotifyObservers(nsIPermission *aPermission, const PRUnichar *aData);
|
|
nsresult RemoveAllFromMemory();
|
|
nsresult GetHost(nsIURI *aURI, nsACString &aResult);
|
|
void RemoveTypeStrings();
|
|
|
|
nsCOMPtr<nsIObserverService> mObserverService;
|
|
nsCOMPtr<nsIFile> mPermissionsFile;
|
|
nsCOMPtr<nsITimer> mWriteTimer;
|
|
nsTHashtable<nsHostEntry> mHostTable;
|
|
PRUint32 mHostCount;
|
|
PRPackedBool mChangedList;
|
|
PRPackedBool mHasUnknownTypes;
|
|
|
|
// An array to store the strings identifying the different types.
|
|
char *mTypeArray[NUMBER_OF_TYPES];
|
|
};
|
|
|
|
// {4F6B5E00-0C36-11d5-A535-0010A401EB10}
|
|
#define NS_PERMISSIONMANAGER_CID \
|
|
{ 0x4f6b5e00, 0xc36, 0x11d5, { 0xa5, 0x35, 0x0, 0x10, 0xa4, 0x1, 0xeb, 0x10 } }
|
|
|
|
#endif /* nsPermissionManager_h__ */
|