1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/alternate_nav_url_fetcher.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/infobars/infobar_tab_helper.h"
#include "chrome/browser/intranet_redirect_detector.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/tab_contents/link_infobar_delegate.h"
#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
#include "chrome/common/chrome_notification_types.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/notification_service.h"
#include "content/public/common/url_fetcher.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources_standard.h"
#include "net/base/load_flags.h"
#include "net/base/registry_controlled_domain.h"
#include "net/url_request/url_request.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
using content::NavigationController;
using content::OpenURLParams;
using content::Referrer;
// AlternateNavInfoBarDelegate ------------------------------------------------
class AlternateNavInfoBarDelegate : public LinkInfoBarDelegate {
public:
AlternateNavInfoBarDelegate(InfoBarTabHelper* owner,
const GURL& alternate_nav_url);
virtual ~AlternateNavInfoBarDelegate();
private:
// LinkInfoBarDelegate
virtual gfx::Image* GetIcon() const OVERRIDE;
virtual Type GetInfoBarType() const OVERRIDE;
virtual string16 GetMessageTextWithOffset(size_t* link_offset) const OVERRIDE;
virtual string16 GetLinkText() const OVERRIDE;
virtual bool LinkClicked(WindowOpenDisposition disposition) OVERRIDE;
GURL alternate_nav_url_;
DISALLOW_COPY_AND_ASSIGN(AlternateNavInfoBarDelegate);
};
AlternateNavInfoBarDelegate::AlternateNavInfoBarDelegate(
InfoBarTabHelper* owner,
const GURL& alternate_nav_url)
: LinkInfoBarDelegate(owner),
alternate_nav_url_(alternate_nav_url) {
}
AlternateNavInfoBarDelegate::~AlternateNavInfoBarDelegate() {
}
gfx::Image* AlternateNavInfoBarDelegate::GetIcon() const {
return &ResourceBundle::GetSharedInstance().GetNativeImageNamed(
IDR_INFOBAR_ALT_NAV_URL);
}
InfoBarDelegate::Type AlternateNavInfoBarDelegate::GetInfoBarType() const {
return PAGE_ACTION_TYPE;
}
string16 AlternateNavInfoBarDelegate::GetMessageTextWithOffset(
size_t* link_offset) const {
const string16 label = l10n_util::GetStringFUTF16(
IDS_ALTERNATE_NAV_URL_VIEW_LABEL, string16(), link_offset);
return label;
}
string16 AlternateNavInfoBarDelegate::GetLinkText() const {
return UTF8ToUTF16(alternate_nav_url_.spec());
}
bool AlternateNavInfoBarDelegate::LinkClicked(
WindowOpenDisposition disposition) {
OpenURLParams params(
alternate_nav_url_, Referrer(), disposition,
// Pretend the user typed this URL, so that navigating to
// it will be the default action when it's typed again in
// the future.
content::PAGE_TRANSITION_TYPED,
false);
owner()->web_contents()->OpenURL(params);
// We should always close, even if the navigation did not occur within this
// TabContents.
return true;
}
// AlternateNavURLFetcher -----------------------------------------------------
AlternateNavURLFetcher::AlternateNavURLFetcher(
const GURL& alternate_nav_url)
: alternate_nav_url_(alternate_nav_url),
controller_(NULL),
state_(NOT_STARTED),
navigated_to_entry_(false) {
registrar_.Add(this, content::NOTIFICATION_NAV_ENTRY_PENDING,
content::NotificationService::AllSources());
registrar_.Add(this, chrome::NOTIFICATION_INSTANT_COMMITTED,
content::NotificationService::AllSources());
}
AlternateNavURLFetcher::~AlternateNavURLFetcher() {
}
void AlternateNavURLFetcher::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
switch (type) {
case content::NOTIFICATION_NAV_ENTRY_PENDING: {
// If we've already received a notification for the same controller, we
// should delete ourselves as that indicates that the page is being
// re-loaded so this instance is now stale.
NavigationController* controller =
content::Source<NavigationController>(source).ptr();
if (controller_ == controller) {
delete this;
} else if (!controller_) {
// Start listening for the commit notification.
DCHECK(controller->GetPendingEntry());
registrar_.Add(this, content::NOTIFICATION_NAV_ENTRY_COMMITTED,
content::Source<NavigationController>(
controller));
StartFetch(controller);
}
break;
}
case chrome::NOTIFICATION_INSTANT_COMMITTED: {
// See above.
NavigationController* controller =
&content::Source<TabContentsWrapper>(source)->
web_contents()->GetController();
if (controller_ == controller) {
delete this;
} else if (!controller_) {
navigated_to_entry_ = true;
StartFetch(controller);
}
break;
}
case content::NOTIFICATION_NAV_ENTRY_COMMITTED:
// The page was navigated, we can show the infobar now if necessary.
registrar_.Remove(this, content::NOTIFICATION_NAV_ENTRY_COMMITTED,
content::Source<NavigationController>(controller_));
navigated_to_entry_ = true;
ShowInfobarIfPossible();
// WARNING: |this| may be deleted!
break;
case content::NOTIFICATION_TAB_CLOSED:
// We have been closed. In order to prevent the URLFetcher from trying to
// access the controller that will be invalid, we delete ourselves.
// This deletes the URLFetcher and insures its callback won't be called.
delete this;
break;
default:
NOTREACHED();
}
}
void AlternateNavURLFetcher::OnURLFetchComplete(
const content::URLFetcher* source) {
DCHECK_EQ(fetcher_.get(), source);
SetStatusFromURLFetch(
source->GetURL(), source->GetStatus(), source->GetResponseCode());
ShowInfobarIfPossible();
// WARNING: |this| may be deleted!
}
void AlternateNavURLFetcher::StartFetch(NavigationController* controller) {
controller_ = controller;
registrar_.Add(this, content::NOTIFICATION_TAB_CLOSED,
content::Source<NavigationController>(controller_));
DCHECK_EQ(NOT_STARTED, state_);
state_ = IN_PROGRESS;
fetcher_.reset(content::URLFetcher::Create(
GURL(alternate_nav_url_), content::URLFetcher::HEAD, this));
fetcher_->SetRequestContext(
controller_->GetBrowserContext()->GetRequestContext());
content::WebContents* web_contents = controller_->GetWebContents();
fetcher_->AssociateWithRenderView(
web_contents->GetURL(),
web_contents->GetRenderProcessHost()->GetID(),
web_contents->GetRenderViewHost()->GetRoutingID());
fetcher_->Start();
}
void AlternateNavURLFetcher::SetStatusFromURLFetch(
const GURL& url,
const net::URLRequestStatus& status,
int response_code) {
if (!status.is_success() ||
// HTTP 2xx, 401, and 407 all indicate that the target address exists.
(((response_code / 100) != 2) &&
(response_code != 401) && (response_code != 407)) ||
// Fail if we're redirected to a common location.
// This happens for ISPs/DNS providers/etc. who return
// provider-controlled pages to arbitrary user navigation attempts.
// Because this can result in infobars on large fractions of user
// searches, we don't show automatic infobars for these. Note that users
// can still choose to explicitly navigate to or search for pages in
// these domains, and can still get infobars for cases that wind up on
// other domains (e.g. legit intranet sites), we're just trying to avoid
// erroneously harassing the user with our own UI prompts.
net::RegistryControlledDomainService::SameDomainOrHost(url,
IntranetRedirectDetector::RedirectOrigin())) {
state_ = FAILED;
return;
}
state_ = SUCCEEDED;
}
void AlternateNavURLFetcher::ShowInfobarIfPossible() {
if (!navigated_to_entry_ || state_ != SUCCEEDED) {
if (state_ == FAILED)
delete this;
return;
}
InfoBarTabHelper* infobar_helper =
TabContentsWrapper::GetCurrentWrapperForContents(
controller_->GetWebContents())->infobar_tab_helper();
infobar_helper->AddInfoBar(
new AlternateNavInfoBarDelegate(infobar_helper, alternate_nav_url_));
delete this;
}
|
