gecko-dev/extensions/cookie/nsPermissionManager.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsPermissionManager_h__
#define nsPermissionManager_h__
#include "nsIPermissionManager.h"
#include "nsIObserver.h"
#include "nsWeakReference.h"
#include "nsCOMPtr.h"
#include "nsIInputStream.h"
#include "nsTHashtable.h"
#include "nsTArray.h"
#include "nsString.h"
#include "nsPermission.h"
#include "nsHashKeys.h"
#include "nsCOMArray.h"
#include "nsDataHashtable.h"
namespace mozilla {
class OriginAttributesPattern;
}
class nsIPermission;
class mozIStorageConnection;
class mozIStorageAsyncStatement;
////////////////////////////////////////////////////////////////////////////////
class nsPermissionManager final : public nsIPermissionManager,
public nsIObserver,
public nsSupportsWeakReference
{
public:
class PermissionEntry
{
public:
PermissionEntry(int64_t aID, uint32_t aType, uint32_t aPermission,
uint32_t aExpireType, int64_t aExpireTime,
int64_t aModificationTime)
: mID(aID)
, mType(aType)
, mPermission(aPermission)
, mExpireType(aExpireType)
, mExpireTime(aExpireTime)
, mModificationTime(aModificationTime)
, mNonSessionPermission(aPermission)
, mNonSessionExpireType(aExpireType)
, mNonSessionExpireTime(aExpireTime)
{}
int64_t mID;
uint32_t mType;
uint32_t mPermission;
uint32_t mExpireType;
int64_t mExpireTime;
int64_t mModificationTime;
uint32_t mNonSessionPermission;
uint32_t mNonSessionExpireType;
uint32_t mNonSessionExpireTime;
};
/**
* PermissionKey is the key used by PermissionHashKey hash table.
*
* NOTE: It could be implementing nsIHashable but there is no reason to worry
* with XPCOM interfaces while we don't need to.
*/
class PermissionKey
{
public:
static PermissionKey* CreateFromPrincipal(nsIPrincipal* aPrincipal,
nsresult& aResult);
explicit PermissionKey(const nsACString& aOrigin)
: mOrigin(aOrigin)
{
}
bool operator==(const PermissionKey& aKey) const {
return mOrigin.Equals(aKey.mOrigin);
}
PLDHashNumber GetHashCode() const {
return mozilla::HashString(mOrigin);
}
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(PermissionKey)
nsCString mOrigin;
private:
// Default ctor shouldn't be used.
PermissionKey() = delete;
// Dtor shouldn't be used outside of the class.
~PermissionKey() {};
};
class PermissionHashKey : public nsRefPtrHashKey<PermissionKey>
{
public:
explicit PermissionHashKey(const PermissionKey* aPermissionKey)
: nsRefPtrHashKey<PermissionKey>(aPermissionKey)
{}
PermissionHashKey(const PermissionHashKey& toCopy)
: nsRefPtrHashKey<PermissionKey>(toCopy)
, mPermissions(toCopy.mPermissions)
{}
bool KeyEquals(const PermissionKey* aKey) const
{
return *aKey == *GetKey();
}
static PLDHashNumber HashKey(const PermissionKey* aKey)
{
return aKey->GetHashCode();
}
// Force the hashtable to use the copy constructor when shuffling entries
// around, otherwise the Auto part of our AutoTArray won't be happy!
enum { ALLOW_MEMMOVE = false };
inline nsTArray<PermissionEntry> & GetPermissions()
{
return mPermissions;
}
inline int32_t GetPermissionIndex(uint32_t aType) const
{
for (uint32_t i = 0; i < mPermissions.Length(); ++i)
if (mPermissions[i].mType == aType)
return i;
return -1;
}
inline PermissionEntry GetPermission(uint32_t aType) const
{
for (uint32_t i = 0; i < mPermissions.Length(); ++i)
if (mPermissions[i].mType == aType)
return mPermissions[i];
// unknown permission... return relevant data
return PermissionEntry(-1, aType, nsIPermissionManager::UNKNOWN_ACTION,
nsIPermissionManager::EXPIRE_NEVER, 0, 0);
}
private:
AutoTArray<PermissionEntry, 1> mPermissions;
};
// nsISupports
NS_DECL_ISUPPORTS
NS_DECL_NSIPERMISSIONMANAGER
NS_DECL_NSIOBSERVER
nsPermissionManager();
static nsIPermissionManager* GetXPCOMSingleton();
nsresult Init();
// enums for AddInternal()
enum OperationType {
eOperationNone,
eOperationAdding,
eOperationRemoving,
eOperationChanging,
eOperationReplacingDefault
};
enum DBOperationType {
eNoDBOperation,
eWriteToDB
};
enum NotifyOperationType {
eDontNotify,
eNotify
};
// A special value for a permission ID that indicates the ID was loaded as
// a default value. These will never be written to the database, but may
// be overridden with an explicit permission (including UNKNOWN_ACTION)
static const int64_t cIDPermissionIsDefault = -1;
nsresult AddInternal(nsIPrincipal* aPrincipal,
const nsAFlatCString &aType,
uint32_t aPermission,
int64_t aID,
uint32_t aExpireType,
int64_t aExpireTime,
int64_t aModificationTime,
NotifyOperationType aNotifyOperation,
DBOperationType aDBOperation,
const bool aIgnoreSessionPermissions = false);
/**
* Initialize the "clear-origin-attributes-data" observing.
* Will create a nsPermissionManager instance if needed.
* That way, we can prevent have nsPermissionManager created at startup just
* to be able to clear data when an application is uninstalled.
*/
static void ClearOriginDataObserverInit();
nsresult
RemovePermissionsWithAttributes(mozilla::OriginAttributesPattern& aAttrs);
private:
virtual ~nsPermissionManager();
int32_t GetTypeIndex(const char *aTypeString,
bool aAdd);
PermissionHashKey* GetPermissionHashKey(nsIPrincipal* aPrincipal,
uint32_t aType,
bool aExactHostMatch);
nsresult CommonTestPermission(nsIPrincipal* aPrincipal,
const char *aType,
uint32_t *aPermission,
bool aExactHostMatch,
bool aIncludingSession);
nsresult OpenDatabase(nsIFile* permissionsFile);
nsresult InitDB(bool aRemoveFile);
nsresult CreateTable();
nsresult Import();
nsresult ImportDefaults();
nsresult _DoImport(nsIInputStream *inputStream, mozIStorageConnection *aConn);
nsresult Read();
void NotifyObserversWithPermission(nsIPrincipal* aPrincipal,
const nsCString &aType,
uint32_t aPermission,
uint32_t aExpireType,
int64_t aExpireTime,
const char16_t *aData);
void NotifyObservers(nsIPermission *aPermission, const char16_t *aData);
// Finalize all statements, close the DB and null it.
// if aRebuildOnSuccess, reinitialize database
void CloseDB(bool aRebuildOnSuccess = false);
nsresult RemoveAllInternal(bool aNotifyObservers);
nsresult RemoveAllFromMemory();
static void UpdateDB(OperationType aOp,
mozIStorageAsyncStatement* aStmt,
int64_t aID,
const nsACString& aOrigin,
const nsACString& aType,
uint32_t aPermission,
uint32_t aExpireType,
int64_t aExpireTime,
int64_t aModificationTime);
/**
* This method removes all permissions modified after the specified time.
*/
nsresult
RemoveAllModifiedSince(int64_t aModificationTime);
/**
* Retrieve permissions from chrome process.
*/
nsresult
FetchPermissions();
nsCOMPtr<mozIStorageConnection> mDBConn;
nsCOMPtr<mozIStorageAsyncStatement> mStmtInsert;
nsCOMPtr<mozIStorageAsyncStatement> mStmtDelete;
nsCOMPtr<mozIStorageAsyncStatement> mStmtUpdate;
bool mMemoryOnlyDB;
nsTHashtable<PermissionHashKey> mPermissionTable;
// a unique, monotonically increasing id used to identify each database entry
int64_t mLargestID;
// An array to store the strings identifying the different types.
nsTArray<nsCString> mTypeArray;
// Initially, |false|. Set to |true| once shutdown has started, to avoid
// reopening the database.
bool mIsShuttingDown;
friend class DeleteFromMozHostListener;
friend class CloseDatabaseListener;
};
// {4F6B5E00-0C36-11d5-A535-0010A401EB10}
#define NS_PERMISSIONMANAGER_CID \
{ 0x4f6b5e00, 0xc36, 0x11d5, { 0xa5, 0x35, 0x0, 0x10, 0xa4, 0x1, 0xeb, 0x10 } }
#endif /* nsPermissionManager_h__ */