1 /*

     2  * Copyright (C) 2005 Apple Computer, 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 <WebKit/WebDataSource.h>

    30 #import <WebKit/WebDefaultPolicyDelegate.h>

    31 #import <WebKit/WebFrame.h>

    32 #import <WebKit/WebPolicyDelegatePrivate.h>

    33 #import <WebKit/WebView.h>

    34 #import <WebKit/WebViewPrivate.h>

    35 

    36 #import <Foundation/NSURLConnection.h>

    37 #import <Foundation/NSURLRequest.h>

    38 #import <Foundation/NSURLResponse.h>

    39 #import <JavaScriptCore/Assertions.h>

    40 

    41 

    42 @implementation WebDefaultPolicyDelegate

    43 

    44 static WebDefaultPolicyDelegate *sharedDelegate = nil;

    45 

    46 // Return a object with vanilla implementations of the protocol's methods

    47 // Note this feature relies on our default delegate being stateless

    48 + (WebDefaultPolicyDelegate *)sharedPolicyDelegate

    49 {

    50     if (!sharedDelegate) {

    51         sharedDelegate = [[WebDefaultPolicyDelegate alloc] init];

    52     }

    53     return sharedDelegate;

    54 }

    55 

    56 - (void)webView: (WebView *)wv unableToImplementPolicyWithError:(NSError *)error frame:(WebFrame *)frame

    57 {

    58     LOG_ERROR("called unableToImplementPolicyWithError:%@ inFrame:%@", error, frame);

    59 }

    60 

    61 

    62 - (void)webView: (WebView *)wv decidePolicyForMIMEType:(NSString *)type

    63                                                request:(NSURLRequest *)request

    64                                                  frame:(WebFrame *)frame

    65                                       decisionListener:(id <WebPolicyDecisionListener>)listener;

    66 {

    67     if ([[request URL] isFileURL]) {

    68         BOOL isDirectory = NO;

    69         [[NSFileManager defaultManager] fileExistsAtPath:[[request URL] path] isDirectory:&isDirectory];

    70         

    71         if (isDirectory) {

    72             [listener ignore];

    73         } else if([WebView canShowMIMEType:type]) {

    74             [listener use];

    75         } else{

    76             [listener ignore];

    77         }

    78     } else if ([WebView canShowMIMEType:type]) {

    79         [listener use];

    80     } else {

    81         [listener ignore];

    82     }

    83 }

    84 

    85 - (void)webView: (WebView *)wv decidePolicyForNavigationAction:(NSDictionary *)actionInformation 

    86                                                        request:(NSURLRequest *)request

    87                                                          frame:(WebFrame *)frame

    88                                               decisionListener:(id <WebPolicyDecisionListener>)listener

    89 {

    90     WebNavigationType navType = [[actionInformation objectForKey:WebActionNavigationTypeKey] intValue];

    91 

    92     if ([WebView _canHandleRequest:request]) {

    93         [listener use];

    94     } else if (navType == WebNavigationTypePlugInRequest) {

    95         [listener use];

    96     } else {

    97         // A file URL shouldn't fall through to here, but if it did,

    98         // it would be a security risk to open it.

    99         if (![[request URL] isFileURL]) {

   100             [[NSWorkspace sharedWorkspace] openURL:[request URL]];

   101         }

   102         [listener ignore];

   103     }

   104 }

   105 

   106 - (void)webView: (WebView *)wv decidePolicyForNewWindowAction:(NSDictionary *)actionInformation 

   107                                                       request:(NSURLRequest *)request

   108                                                  newFrameName:(NSString *)frameName

   109                                              decisionListener:(id <WebPolicyDecisionListener>)listener

   110 {

   111     [listener use];

   112 }

   113 

   114 // Temporary SPI needed for <rdar://problem/3951283> can view pages from the back/forward cache that should be disallowed by Parental Controls

   115 - (BOOL)webView:(WebView *)webView shouldGoToHistoryItem:(WebHistoryItem *)item

   116 {

   117     return YES;

   118 }

   119 

   120 @end

   121