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