WebDefaultPolicyDelegate.m   [plain text]

/*
* 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 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 "WebDefaultPolicyDelegate.h"

#import "WebDataSource.h"
#import "WebFrame.h"
#import "WebPolicyDelegatePrivate.h"
#import "WebViewInternal.h"
#import <Foundation/NSURLConnection.h>
#import <Foundation/NSURLRequest.h>
#import <Foundation/NSURLResponse.h>
#import <wtf/Assertions.h>

@implementation WebDefaultPolicyDelegate

static WebDefaultPolicyDelegate *sharedDelegate = nil;

// Return a object with vanilla implementations of the protocol's methods
// Note this feature relies on our default delegate being stateless
+ (WebDefaultPolicyDelegate *)sharedPolicyDelegate
{
if (!sharedDelegate) {
sharedDelegate = [[WebDefaultPolicyDelegate alloc] init];
}
return sharedDelegate;
}

- (void)webView: (WebView *)wv unableToImplementPolicyWithError:(NSError *)error frame:(WebFrame *)frame
{
LOG_ERROR("called unableToImplementPolicyWithError:%@ inFrame:%@", error, frame);
}

- (void)webView: (WebView *)wv decidePolicyForMIMEType:(NSString *)type
request:(NSURLRequest *)request
frame:(WebFrame *)frame
decisionListener:(id <WebPolicyDecisionListener>)listener
{
if ([[request URL] isFileURL]) {
BOOL isDirectory = NO;
BOOL exists = [[NSFileManager defaultManager] fileExistsAtPath:[[request URL] path] isDirectory:&isDirectory];

if (exists && !isDirectory && [wv _canShowMIMEType:type])
[listener use];
else
[listener ignore];
} else if ([wv _canShowMIMEType:type])
[listener use];
else
[listener ignore];
}

- (void)webView: (WebView *)wv decidePolicyForNavigationAction:(NSDictionary *)actionInformation
request:(NSURLRequest *)request
frame:(WebFrame *)frame
decisionListener:(id <WebPolicyDecisionListener>)listener
{
WebNavigationType navType = (WebNavigationType)[[actionInformation objectForKey:WebActionNavigationTypeKey] intValue];

if ([WebView _canHandleRequest:request forMainFrame:frame == [wv mainFrame]]) {
[listener use];
} else if (navType == WebNavigationTypePlugInRequest) {
[listener use];
} else {
// A file URL shouldn't fall through to here, but if it did,
// it would be a security risk to open it.
if (![[request URL] isFileURL]) {
#if !PLATFORM(IOS_FAMILY)
[[NSWorkspace sharedWorkspace] openURL:[request URL]];
#endif
}
[listener ignore];
}
}

- (void)webView: (WebView *)wv decidePolicyForNewWindowAction:(NSDictionary *)actionInformation
request:(NSURLRequest *)request
newFrameName:(NSString *)frameName
decisionListener:(id <WebPolicyDecisionListener>)listener
{
[listener use];
}

// Temporary SPI needed for <rdar://problem/3951283> can view pages from the back/forward cache that should be disallowed by Parental Controls
- (BOOL)webView:(WebView *)webView shouldGoToHistoryItem:(WebHistoryItem *)item
{
return YES;
}

@end