/*

 * Copyright (C) 2005, 2008 Apple Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1.  Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer. 

 * 2.  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. 

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission. 

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 APPLE OR ITS 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.

 */

#import "WebPluginContainerCheck.h"

#import "WebFrameInternal.h"

#import "WebPluginContainerPrivate.h"

#import "WebPluginController.h"

#import "WebPolicyDelegatePrivate.h"

#import "WebView.h"

#import "WebViewInternal.h"

#import <Foundation/NSDictionary.h>

#import <Foundation/NSURL.h>

#import <Foundation/NSURLRequest.h>

#import <WebCore/Frame.h>

#import <WebCore/FrameLoader.h>

#import <WebCore/FrameLoaderTypes.h>

#import <WebCore/SecurityOrigin.h>

#import <wtf/Assertions.h>

#import <objc/objc-runtime.h>

using namespace WebCore;

@implementation WebPluginContainerCheck

- (id)initWithRequest:(NSURLRequest *)request target:(NSString *)target resultObject:(id)obj selector:(SEL)selector controller:(id <WebPluginContainerCheckController>)controller contextInfo:(id)contextInfo /*optional*/

{

    if (!(self = [super init]))

        return nil;

    _request = [request copy];

    _target = [target copy];

    _resultObject = [obj retain];

    _resultSelector = selector;

    _contextInfo = [contextInfo retain];

    // controller owns us so don't retain, to avoid cycle

    _controller = controller;

    return self;

}

+ (id)checkWithRequest:(NSURLRequest *)request target:(NSString *)target resultObject:(id)obj selector:(SEL)selector controller:(id <WebPluginContainerCheckController>)controller contextInfo:(id)contextInfo /*optional*/

{

    return [[[self alloc] initWithRequest:request target:target resultObject:obj selector:selector controller:controller contextInfo:contextInfo] autorelease];

}

- (void)finalize

{

    // mandatory to complete or cancel before releasing this object

    ASSERT(_done);

    [super finalize];

}

- (void)dealloc

{

    // mandatory to complete or cancel before releasing this object

    ASSERT(_done);

    [super dealloc];

}

- (void)_continueWithPolicy:(PolicyAction)policy

{

    if (_contextInfo)

        ((void (*)(id, SEL, BOOL, id))objc_msgSend)(_resultObject, _resultSelector, (policy == PolicyUse), _contextInfo);

    else     

        ((void (*)(id, SEL, BOOL))objc_msgSend)(_resultObject, _resultSelector, (policy == PolicyUse));

    // this will call indirectly call cancel

    [_controller _webPluginContainerCancelCheckIfAllowedToLoadRequest:self];

}

- (BOOL)_isForbiddenFileLoad

{

   Frame* coreFrame = core([_controller webFrame]);

   ASSERT(coreFrame);

   if (!SecurityOrigin::canLoad([_request URL], String(), coreFrame->document())) {

       [self _continueWithPolicy:PolicyIgnore];

       return YES;

   }

   return NO;

}

- (NSDictionary *)_actionInformationWithURL:(NSURL *)URL

{

    return [NSDictionary dictionaryWithObjectsAndKeys:

               [NSNumber numberWithInt:WebNavigationTypePlugInRequest], WebActionNavigationTypeKey,

               [NSNumber numberWithInt:0], WebActionModifierFlagsKey,

               URL, WebActionOriginalURLKey,

               nil];

}

- (void)_askPolicyDelegate

{

    WebView *webView = [_controller webView];

    WebFrame *targetFrame;

    if ([_target length] > 0) {

        targetFrame = [[_controller webFrame] findFrameNamed:_target];

    } else {

        targetFrame = [_controller webFrame];

    }

    NSDictionary *action = [self _actionInformationWithURL:[_request URL]];

    _listener = [[WebPolicyDecisionListener alloc] _initWithTarget:self action:@selector(_continueWithPolicy:)];

    if (targetFrame == nil) {

        // would open new window

        [[webView _policyDelegateForwarder] webView:webView

                     decidePolicyForNewWindowAction:action

                                            request:_request

                                       newFrameName:_target

                                   decisionListener:_listener];

    } else {

        // would target existing frame

        [[webView _policyDelegateForwarder] webView:webView

                    decidePolicyForNavigationAction:action

                                            request:_request

                                              frame:targetFrame

                                   decisionListener:_listener];        

    }

}

- (void)start

{

    ASSERT(!_listener);

    ASSERT(!_done);

    if ([self _isForbiddenFileLoad])

        return;

    [self _askPolicyDelegate];

}

- (void)cancel

{

    if (_done)

        return;

    [_request release];

    _request = nil;

    [_target release];

    _target = nil;

    [_listener _invalidate];

    [_listener release];

    _listener = nil;

    [_resultObject autorelease];

    _resultObject = nil;

    _controller = nil;

    [_contextInfo release];

    _contextInfo = nil;

    _done = YES;

}

- (id)contextInfo

{

    return _contextInfo;   

}

@end