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      1 /*
      2  * Copyright (C) 2005, 2008 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #import "WebPluginContainerCheck.h"
     30 
     31 #import "WebFrameInternal.h"
     32 #import "WebPluginContainerPrivate.h"
     33 #import "WebPluginController.h"
     34 #import "WebPolicyDelegatePrivate.h"
     35 #import "WebView.h"
     36 #import "WebViewInternal.h"
     37 #import <Foundation/NSDictionary.h>
     38 #import <Foundation/NSURL.h>
     39 #import <Foundation/NSURLRequest.h>
     40 #import <WebCore/Frame.h>
     41 #import <WebCore/FrameLoader.h>
     42 #import <WebCore/FrameLoaderTypes.h>
     43 #import <WebCore/SecurityOrigin.h>
     44 #import <wtf/Assertions.h>
     45 #import <objc/objc-runtime.h>
     46 
     47 using namespace WebCore;
     48 
     49 @implementation WebPluginContainerCheck
     50 
     51 - (id)initWithRequest:(NSURLRequest *)request target:(NSString *)target resultObject:(id)obj selector:(SEL)selector controller:(id <WebPluginContainerCheckController>)controller contextInfo:(id)contextInfo /*optional*/
     52 {
     53     if (!(self = [super init]))
     54         return nil;
     55 
     56     _request = [request copy];
     57     _target = [target copy];
     58     _resultObject = [obj retain];
     59     _resultSelector = selector;
     60     _contextInfo = [contextInfo retain];
     61 
     62     // controller owns us so don't retain, to avoid cycle
     63     _controller = controller;
     64 
     65     return self;
     66 }
     67 
     68 + (id)checkWithRequest:(NSURLRequest *)request target:(NSString *)target resultObject:(id)obj selector:(SEL)selector controller:(id <WebPluginContainerCheckController>)controller contextInfo:(id)contextInfo /*optional*/
     69 {
     70     return [[[self alloc] initWithRequest:request target:target resultObject:obj selector:selector controller:controller contextInfo:contextInfo] autorelease];
     71 }
     72 
     73 - (void)finalize
     74 {
     75     // mandatory to complete or cancel before releasing this object
     76     ASSERT(_done);
     77     [super finalize];
     78 }
     79 
     80 - (void)dealloc
     81 {
     82     // mandatory to complete or cancel before releasing this object
     83     ASSERT(_done);
     84     [super dealloc];
     85 }
     86 
     87 - (void)_continueWithPolicy:(PolicyAction)policy
     88 {
     89     if (_contextInfo)
     90         ((void (*)(id, SEL, BOOL, id))objc_msgSend)(_resultObject, _resultSelector, (policy == PolicyUse), _contextInfo);
     91     else
     92         ((void (*)(id, SEL, BOOL))objc_msgSend)(_resultObject, _resultSelector, (policy == PolicyUse));
     93 
     94     // this will call indirectly call cancel
     95     [_controller _webPluginContainerCancelCheckIfAllowedToLoadRequest:self];
     96 }
     97 
     98 - (BOOL)_isForbiddenFileLoad
     99 {
    100    Frame* coreFrame = core([_controller webFrame]);
    101    ASSERT(coreFrame);
    102    if (!coreFrame->document()->securityOrigin()->canDisplay([_request URL])) {
    103        [self _continueWithPolicy:PolicyIgnore];
    104        return YES;
    105    }
    106 
    107    return NO;
    108 }
    109 
    110 - (NSDictionary *)_actionInformationWithURL:(NSURL *)URL
    111 {
    112     return [NSDictionary dictionaryWithObjectsAndKeys:
    113                [NSNumber numberWithInt:WebNavigationTypePlugInRequest], WebActionNavigationTypeKey,
    114                [NSNumber numberWithInt:0], WebActionModifierFlagsKey,
    115                URL, WebActionOriginalURLKey,
    116                nil];
    117 }
    118 
    119 - (void)_askPolicyDelegate
    120 {
    121     WebView *webView = [_controller webView];
    122 
    123     WebFrame *targetFrame;
    124     if ([_target length] > 0) {
    125         targetFrame = [[_controller webFrame] findFrameNamed:_target];
    126     } else {
    127         targetFrame = [_controller webFrame];
    128     }
    129 
    130     NSDictionary *action = [self _actionInformationWithURL:[_request URL]];
    131 
    132     _listener = [[WebPolicyDecisionListener alloc] _initWithTarget:self action:@selector(_continueWithPolicy:)];
    133 
    134     if (targetFrame == nil) {
    135         // would open new window
    136         [[webView _policyDelegateForwarder] webView:webView
    137                      decidePolicyForNewWindowAction:action
    138                                             request:_request
    139                                        newFrameName:_target
    140                                    decisionListener:_listener];
    141     } else {
    142         // would target existing frame
    143         [[webView _policyDelegateForwarder] webView:webView
    144                     decidePolicyForNavigationAction:action
    145                                             request:_request
    146                                               frame:targetFrame
    147                                    decisionListener:_listener];
    148     }
    149 }
    150 
    151 - (void)start
    152 {
    153     ASSERT(!_listener);
    154     ASSERT(!_done);
    155 
    156     if ([self _isForbiddenFileLoad])
    157         return;
    158 
    159     [self _askPolicyDelegate];
    160 }
    161 
    162 - (void)cancel
    163 {
    164     if (_done)
    165         return;
    166 
    167     [_request release];
    168     _request = nil;
    169 
    170     [_target release];
    171     _target = nil;
    172 
    173     [_listener _invalidate];
    174     [_listener release];
    175     _listener = nil;
    176 
    177     [_resultObject autorelease];
    178     _resultObject = nil;
    179 
    180     _controller = nil;
    181 
    182     [_contextInfo release];
    183     _contextInfo = nil;
    184 
    185     _done = YES;
    186 }
    187 
    188 - (id)contextInfo
    189 {
    190     return _contextInfo;
    191 }
    192 
    193 @end
    194