1/*
2 * Copyright (C) 2005 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 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 <WebKitLegacy/WebDownload.h>
30
31#import <Foundation/NSURLAuthenticationChallenge.h>
32#import <Foundation/NSURLDownload.h>
33#import <WebCore/AuthenticationCF.h>
34#import <WebCore/AuthenticationMac.h>
35#import <WebCore/Credential.h>
36#import <WebCore/CredentialStorage.h>
37#import <WebCore/ProtectionSpace.h>
38#import <WebKitLegacy/WebPanelAuthenticationHandler.h>
39#import <wtf/Assertions.h>
40
41#import "WebTypesInternal.h"
42
43#if USE(CFNETWORK)
44#import <CFNetwork/CFNetwork.h>
45#import <CFNetwork/CFURLConnection.h>
46#endif
47
48using namespace WebCore;
49
50@class NSURLConnectionDelegateProxy;
51
52// FIXME: The following are NSURLDownload SPI - it would be nice to not have to override them at
53// some point in the future
54@interface NSURLDownload (WebDownloadCapability)
55- (id)_initWithLoadingConnection:(NSURLConnection *)connection
56                         request:(NSURLRequest *)request
57                        response:(NSURLResponse *)response
58                        delegate:(id)delegate
59                           proxy:(NSURLConnectionDelegateProxy *)proxy;
60- (id)_initWithRequest:(NSURLRequest *)request
61              delegate:(id)delegate
62             directory:(NSString *)directory;
63
64#if USE(CFNETWORK)
65- (id)_initWithLoadingCFURLConnection:(CFURLConnectionRef)connection
66                              request:(CFURLRequestRef)request
67                             response:(CFURLResponseRef)response
68                             delegate:(id)delegate
69                                proxy:(NSURLConnectionDelegateProxy *)proxy;
70#endif
71
72@end
73
74@interface WebDownloadInternal : NSObject <NSURLDownloadDelegate>
75{
76@public
77    id realDelegate;
78}
79
80- (void)setRealDelegate:(id)rd;
81
82@end
83
84@implementation WebDownloadInternal
85
86- (void)dealloc
87{
88    [realDelegate release];
89    [super dealloc];
90}
91
92- (void)setRealDelegate:(id)rd
93{
94    [rd retain];
95    [realDelegate release];
96    realDelegate = rd;
97}
98
99- (BOOL)respondsToSelector:(SEL)selector
100{
101    if (selector == @selector(downloadDidBegin:) ||
102        selector == @selector(download:willSendRequest:redirectResponse:) ||
103        selector == @selector(download:didReceiveResponse:) ||
104        selector == @selector(download:didReceiveDataOfLength:) ||
105        selector == @selector(download:shouldDecodeSourceDataOfMIMEType:) ||
106        selector == @selector(download:decideDestinationWithSuggestedFilename:) ||
107        selector == @selector(download:didCreateDestination:) ||
108        selector == @selector(downloadDidFinish:) ||
109        selector == @selector(download:didFailWithError:)) {
110        return [realDelegate respondsToSelector:selector];
111    }
112
113    return [super respondsToSelector:selector];
114}
115
116- (void)downloadDidBegin:(NSURLDownload *)download
117{
118    [realDelegate downloadDidBegin:download];
119}
120
121- (NSURLRequest *)download:(NSURLDownload *)download willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)redirectResponse
122{
123    return [realDelegate download:download willSendRequest:request redirectResponse:redirectResponse];
124}
125
126- (void)download:(NSURLDownload *)download didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
127{
128#if !PLATFORM(IOS)
129    // Try previously stored credential first.
130    if (![challenge previousFailureCount]) {
131        NSURLCredential *credential = mac(CredentialStorage::get(ProtectionSpace([challenge protectionSpace])));
132        if (credential) {
133            [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];
134            return;
135        }
136    }
137
138    if ([realDelegate respondsToSelector:@selector(download:didReceiveAuthenticationChallenge:)]) {
139        [realDelegate download:download didReceiveAuthenticationChallenge:challenge];
140    } else {
141        NSWindow *window = nil;
142        if ([realDelegate respondsToSelector:@selector(downloadWindowForAuthenticationSheet:)]) {
143            window = [realDelegate downloadWindowForAuthenticationSheet:(WebDownload *)download];
144        }
145
146        [[WebPanelAuthenticationHandler sharedHandler] startAuthentication:challenge window:window];
147    }
148#endif
149}
150
151- (void)download:(NSURLDownload *)download didCancelAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
152{
153#if !PLATFORM(IOS)
154    if ([realDelegate respondsToSelector:@selector(download:didCancelAuthenticationChallenge:)]) {
155        [realDelegate download:download didCancelAuthenticationChallenge:challenge];
156    } else {
157        [[WebPanelAuthenticationHandler sharedHandler] cancelAuthentication:challenge];
158    }
159#endif
160}
161
162- (void)download:(NSURLDownload *)download didReceiveResponse:(NSURLResponse *)response
163{
164    [realDelegate download:download didReceiveResponse:response];
165}
166
167- (void)download:(NSURLDownload *)download didReceiveDataOfLength:(NSUInteger)length
168{
169    [realDelegate download:download didReceiveDataOfLength:length];
170}
171
172- (BOOL)download:(NSURLDownload *)download shouldDecodeSourceDataOfMIMEType:(NSString *)encodingType
173{
174    return [realDelegate download:download shouldDecodeSourceDataOfMIMEType:encodingType];
175}
176
177- (void)download:(NSURLDownload *)download decideDestinationWithSuggestedFilename:(NSString *)filename
178{
179    [realDelegate download:download decideDestinationWithSuggestedFilename:filename];
180}
181
182- (void)download:(NSURLDownload *)download didCreateDestination:(NSString *)path
183{
184    [realDelegate download:download didCreateDestination:path];
185}
186
187- (void)downloadDidFinish:(NSURLDownload *)download
188{
189    [realDelegate downloadDidFinish:download];
190}
191
192- (void)download:(NSURLDownload *)download didFailWithError:(NSError *)error
193{
194    [realDelegate download:download didFailWithError:error];
195}
196
197@end
198
199@implementation WebDownload
200
201- (void)_setRealDelegate:(id)delegate
202{
203    if (_webInternal == nil) {
204        _webInternal = [[WebDownloadInternal alloc] init];
205        [_webInternal setRealDelegate:delegate];
206    } else {
207        ASSERT(_webInternal == delegate);
208    }
209}
210
211- (id)init
212{
213    self = [super init];
214    if (self != nil) {
215        // _webInternal can be set up before init by _setRealDelegate
216        if (_webInternal == nil) {
217            _webInternal = [[WebDownloadInternal alloc] init];
218        }
219    }
220    return self;
221}
222
223- (void)dealloc
224{
225    [_webInternal release];
226    [super dealloc];
227}
228
229- (id)initWithRequest:(NSURLRequest *)request delegate:(id<NSURLDownloadDelegate>)delegate
230{
231    [self _setRealDelegate:delegate];
232    return [super initWithRequest:request delegate:_webInternal];
233}
234
235- (id)_initWithLoadingConnection:(NSURLConnection *)connection
236                         request:(NSURLRequest *)request
237                        response:(NSURLResponse *)response
238                        delegate:(id)delegate
239                           proxy:(NSURLConnectionDelegateProxy *)proxy
240{
241    [self _setRealDelegate:delegate];
242    return [super _initWithLoadingConnection:connection request:request response:response delegate:_webInternal proxy:proxy];
243}
244
245#if USE(CFNETWORK)
246- (id)_initWithLoadingCFURLConnection:(CFURLConnectionRef)connection
247                              request:(CFURLRequestRef)request
248                             response:(CFURLResponseRef)response
249                             delegate:(id)delegate
250                                proxy:(NSURLConnectionDelegateProxy *)proxy
251{
252    [self _setRealDelegate:delegate];
253    return [super _initWithLoadingCFURLConnection:connection request:request response:response delegate:_webInternal proxy:proxy];
254}
255#endif
256
257- (id)_initWithRequest:(NSURLRequest *)request
258              delegate:(id)delegate
259             directory:(NSString *)directory
260{
261    [self _setRealDelegate:delegate];
262    return [super _initWithRequest:request delegate:_webInternal directory:directory];
263}
264
265@end
266