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
|
// 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/ui/omnibox/omnibox_navigation_observer.h"
#include "chrome/browser/autocomplete/shortcuts_backend.h"
#include "chrome/browser/autocomplete/shortcuts_backend_factory.h"
#include "chrome/browser/infobars/infobar_service.h"
#include "chrome/browser/intranet_redirect_detector.h"
#include "chrome/browser/ui/omnibox/alternate_nav_infobar_delegate.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/navigation_details.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/web_contents.h"
#include "net/base/load_flags.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
#include "net/url_request/url_fetcher.h"
#include "net/url_request/url_request.h"
// Helpers --------------------------------------------------------------------
namespace {
// HTTP 2xx, 401, and 407 all indicate that the target address exists.
bool ResponseCodeIndicatesSuccess(int response_code) {
return ((response_code / 100) == 2) || (response_code == 401) ||
(response_code == 407);
}
// Returns true if |final_url| doesn't represent an ISP hijack of
// |original_url|, based on the IntranetRedirectDetector's RedirectOrigin().
bool IsValidNavigation(const GURL& original_url, const GURL& final_url) {
const GURL& redirect_url(IntranetRedirectDetector::RedirectOrigin());
return !redirect_url.is_valid() ||
net::registry_controlled_domains::SameDomainOrHost(
original_url, final_url,
net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES) ||
!net::registry_controlled_domains::SameDomainOrHost(
final_url, redirect_url,
net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES);
}
} // namespace
// OmniboxNavigationObserver --------------------------------------------------
OmniboxNavigationObserver::OmniboxNavigationObserver(
Profile* profile,
const base::string16& text,
const AutocompleteMatch& match,
const AutocompleteMatch& alternate_nav_match)
: text_(text),
match_(match),
alternate_nav_match_(alternate_nav_match),
shortcuts_backend_(ShortcutsBackendFactory::GetForProfile(profile)),
load_state_(LOAD_NOT_SEEN),
fetch_state_(FETCH_NOT_COMPLETE) {
if (alternate_nav_match_.destination_url.is_valid()) {
fetcher_.reset(net::URLFetcher::Create(alternate_nav_match_.destination_url,
net::URLFetcher::HEAD, this));
fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SAVE_COOKIES);
fetcher_->SetStopOnRedirect(true);
}
// We need to start by listening to AllSources, since we don't know which tab
// the navigation might occur in.
registrar_.Add(this, content::NOTIFICATION_NAV_ENTRY_PENDING,
content::NotificationService::AllSources());
}
OmniboxNavigationObserver::~OmniboxNavigationObserver() {
}
void OmniboxNavigationObserver::OnSuccessfulNavigation() {
if (shortcuts_backend_.get())
shortcuts_backend_->AddOrUpdateShortcut(text_, match_);
}
void OmniboxNavigationObserver::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK_EQ(content::NOTIFICATION_NAV_ENTRY_PENDING, type);
// It's possible for an attempted omnibox navigation to cause the extensions
// system to synchronously navigate an extension background page. Not only is
// this navigation not the one we want to observe, the associated WebContents
// is invisible and has no InfoBarService, so trying to show an infobar in it
// later will crash. Just ignore this navigation and keep listening.
content::NavigationController* controller =
content::Source<content::NavigationController>(source).ptr();
content::WebContents* web_contents = controller->GetWebContents();
if (!InfoBarService::FromWebContents(web_contents))
return;
// Ignore navgiations to the wrong URL.
// This shouldn't actually happen, but right now it's possible because the
// prerenderer doesn't properly notify us when it swaps in a prerendered page.
// Plus, the swap-in can trigger instant to kick off a new background
// prerender, which we _do_ get notified about. Once crbug.com/247848 is
// fixed, this conditional should be able to be replaced with a [D]CHECK;
// until then we ignore the incorrect navigation (and will be torn down
// without having received the correct notification).
if (match_.destination_url !=
content::Details<content::NavigationEntry>(details)->GetVirtualURL())
return;
registrar_.Remove(this, content::NOTIFICATION_NAV_ENTRY_PENDING,
content::NotificationService::AllSources());
if (fetcher_) {
fetcher_->SetRequestContext(
controller->GetBrowserContext()->GetRequestContext());
}
WebContentsObserver::Observe(web_contents);
// DidStartNavigationToPendingEntry() will be called for this load as well.
}
void OmniboxNavigationObserver::DidStartNavigationToPendingEntry(
const GURL& url,
content::NavigationController::ReloadType reload_type) {
if (load_state_ == LOAD_NOT_SEEN) {
load_state_ = LOAD_PENDING;
if (fetcher_)
fetcher_->Start();
} else {
delete this;
}
}
void OmniboxNavigationObserver::DidFailProvisionalLoad(
content::RenderFrameHost* render_frame_host,
const GURL& validated_url,
int error_code,
const base::string16& error_description) {
if ((load_state_ != LOAD_COMMITTED) && !render_frame_host->GetParent())
delete this;
}
void OmniboxNavigationObserver::NavigationEntryCommitted(
const content::LoadCommittedDetails& load_details) {
load_state_ = LOAD_COMMITTED;
if (ResponseCodeIndicatesSuccess(load_details.http_status_code) &&
IsValidNavigation(match_.destination_url,
load_details.entry->GetVirtualURL()))
OnSuccessfulNavigation();
if (!fetcher_ || (fetch_state_ != FETCH_NOT_COMPLETE))
OnAllLoadingFinished(); // deletes |this|!
}
void OmniboxNavigationObserver::WebContentsDestroyed() {
delete this;
}
void OmniboxNavigationObserver::OnURLFetchComplete(
const net::URLFetcher* source) {
DCHECK_EQ(fetcher_.get(), source);
const net::URLRequestStatus& status = source->GetStatus();
int response_code = source->GetResponseCode();
fetch_state_ =
(status.is_success() && ResponseCodeIndicatesSuccess(response_code)) ||
((status.status() == net::URLRequestStatus::CANCELED) &&
((response_code / 100) == 3) &&
IsValidNavigation(alternate_nav_match_.destination_url,
source->GetURL())) ?
FETCH_SUCCEEDED : FETCH_FAILED;
if (load_state_ == LOAD_COMMITTED)
OnAllLoadingFinished(); // deletes |this|!
}
void OmniboxNavigationObserver::OnAllLoadingFinished() {
if (fetch_state_ == FETCH_SUCCEEDED) {
AlternateNavInfoBarDelegate::Create(
web_contents(), text_, alternate_nav_match_, match_.destination_url);
}
delete this;
}
|
