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 "WebDefaultPolicyDelegate.h"

    30 

    31 #import "WebDataSource.h"

    32 #import "WebFrame.h"

    33 #import "WebPolicyDelegatePrivate.h"

    34 #import "WebViewInternal.h"

    35 #import <Foundation/NSURLConnection.h>

    36 #import <Foundation/NSURLRequest.h>

    37 #import <Foundation/NSURLResponse.h>

    38 #import <wtf/Assertions.h>

    39 

    40 @implementation WebDefaultPolicyDelegate

    41 

    42 static WebDefaultPolicyDelegate *sharedDelegate = nil;

    43 

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

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

    46 + (WebDefaultPolicyDelegate *)sharedPolicyDelegate

    47 {

    48     if (!sharedDelegate) {

    49         sharedDelegate = [[WebDefaultPolicyDelegate alloc] init];

    50     }

    51     return sharedDelegate;

    52 }

    53 

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

    55 {

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

    57 }

    58 

    59 

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

    61                                                request:(NSURLRequest *)request

    62                                                  frame:(WebFrame *)frame

    63                                       decisionListener:(id <WebPolicyDecisionListener>)listener

    64 {

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

    66         BOOL isDirectory = NO;

    67         BOOL exists = [[NSFileManager defaultManager] fileExistsAtPath:[[request URL] path] isDirectory:&isDirectory];

    68 

    69         if (exists && !isDirectory && [wv _canShowMIMEType:type])

    70             [listener use];

    71         else

    72             [listener ignore];

    73     } else if ([wv _canShowMIMEType:type])

    74         [listener use];

    75     else

    76         [listener ignore];

    77 }

    78 

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

    80                                                        request:(NSURLRequest *)request

    81                                                          frame:(WebFrame *)frame

    82                                               decisionListener:(id <WebPolicyDecisionListener>)listener

    83 {

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

    85 

    86     if ([WebView _canHandleRequest:request forMainFrame:frame == [wv mainFrame]]) {

    87         [listener use];

    88     } else if (navType == WebNavigationTypePlugInRequest) {

    89         [listener use];

    90     } else {

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

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

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

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

    95         }

    96         [listener ignore];

    97     }

    98 }

    99 

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

   101                                                       request:(NSURLRequest *)request

   102                                                  newFrameName:(NSString *)frameName

   103                                              decisionListener:(id <WebPolicyDecisionListener>)listener

   104 {

   105     [listener use];

   106 }

   107 

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

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

   110 {

   111     return YES;

   112 }

   113 

   114 @end

   115