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/*
* Copyright 2009, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef GeolocationPermissions_h
#define GeolocationPermissions_h
#include <PlatformString.h>
#include <Timer.h>
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
#include <wtf/text/StringHash.h>
namespace WebCore {
class Frame;
class Geolocation;
class SQLiteDatabase;
}
namespace android {
class WebViewCore;
// The GeolocationPermissions class manages Geolocation permissions for the
// browser. Permissions are managed on a per-origin basis, as required by
// the Geolocation spec - http://dev.w3.org/geo/api/spec-source.html. An
// origin specifies the scheme, host and port of particular frame. An
// origin is represented here as a string, using the output of
// WebCore::SecurityOrigin::toString.
//
// Each instance handles permissions for a given main frame. The class
// enforces the following policy.
// - Non-remembered permissions last for the dureation of the main frame.
// - Remembered permissions last indefinitely.
// - All permissions are shared between child frames of a main frame.
// - Only remembered permissions are shared between main frames.
// - Remembered permissions are made available for use in the browser
// settings menu.
class GeolocationPermissions : public RefCounted<GeolocationPermissions> {
public:
// Creates the GeolocationPermissions object to manage permissions for
// the WebView.
GeolocationPermissions(WebViewCore* webViewCore);
virtual ~GeolocationPermissions();
// Queries the permission state for the specified frame. If the
// permission state has not yet been set, prompts the user. Once the
// permission state has been determined, asynchronously calls back to
// the Geolocation objects in all frames in this WebView that are from
// the same origin as the requesting frame.
void queryPermissionState(WebCore::Frame* frame);
void cancelPermissionStateQuery(WebCore::Frame*);
// Provides this object with a permission state set by the user. The
// permission is specified by 'allow' and applied to 'origin'. If
// 'remember' is set, the permission state is remembered permanently.
// The new permission state is recorded and will trigger callbacks to
// geolocation objects as described above. If any other permission
// requests are queued, the next is started.
void providePermissionState(WTF::String origin, bool allow, bool remember);
// Clears the temporary permission state and any pending requests. Used
// when the main frame is refreshed or navigated to a new URL.
void resetTemporaryPermissionStates();
// Static methods for use from Java. These are used to interact with the
// browser settings menu and to update the permanent permissions when
// system settings are changed.
// Gets the list of all origins for which permanent permissions are
// recorded.
typedef HashSet<WTF::String> OriginSet;
static OriginSet getOrigins();
// Gets whether the specified origin is allowed.
static bool getAllowed(WTF::String origin);
// Clears the permission state for the specified origin.
static void clear(WTF::String origin);
// Sets the permission state for the specified origin to allowed.
static void allow(WTF::String origin);
// Clears the permission state for all origins.
static void clearAll();
// Sets whether the GeolocationPermissions object should always deny
// permission requests, irrespective of previously recorded permission
// states.
static void setAlwaysDeny(bool deny);
static void setDatabasePath(WTF::String path);
static bool openDatabase(WebCore::SQLiteDatabase*);
// Saves the permanent permissions to the DB if required.
static void maybeStorePermanentPermissions();
private:
// Records the permission state for the specified origin and whether
// this should be remembered.
void recordPermissionState(WTF::String origin, bool allow, bool remember);
// Used to make an asynchronous callback to the Geolocation objects.
void makeAsynchronousCallbackToGeolocation(WTF::String origin, bool allow);
void timerFired(WebCore::Timer<GeolocationPermissions>* timer);
// Calls back to the Geolocation objects in all frames from the
// specified origin. There may be no such objects, as the frames using
// Geolocation from the specified origin may no longer use Geolocation,
// or may have been navigated to a different origin..
void maybeCallbackFrames(WTF::String origin, bool allow);
// Cancels pending permission requests for the specified origin in
// other main frames (ie browser tabs). This is used when the user
// specifies permission to be remembered.
static void cancelPendingRequestsInOtherTabs(WTF::String origin);
void cancelPendingRequests(WTF::String origin);
static void maybeLoadPermanentPermissions();
const WTF::String& nextOriginInQueue();
WebViewCore* m_webViewCore;
// A vector of the origins queued to make a permission request.
// The first in the vector is the origin currently making the request.
typedef Vector<WTF::String> OriginVector;
OriginVector m_queuedOrigins;
// A map from a queued origin to the set of frames that have requested
// permission for that origin.
typedef HashSet<WebCore::Frame*> FrameSet;
typedef HashMap<WTF::String, FrameSet> OriginToFramesMap;
OriginToFramesMap m_queuedOriginsToFramesMap;
typedef WTF::HashMap<WTF::String, bool> PermissionsMap;
PermissionsMap m_temporaryPermissions;
static PermissionsMap s_permanentPermissions;
typedef WTF::Vector<GeolocationPermissions*> GeolocationPermissionsVector;
static GeolocationPermissionsVector s_instances;
WebCore::Timer<GeolocationPermissions> m_timer;
struct CallbackData {
WTF::String origin;
bool allow;
};
CallbackData m_callbackData;
static bool s_alwaysDeny;
static bool s_permanentPermissionsLoaded;
static bool s_permanentPermissionsModified;
static WTF::String s_databasePath;
};
} // namespace android
#endif
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