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
|
// Copyright 2014 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 "extensions/browser/extension_web_contents_observer.h"
#include "content/public/browser/child_process_security_policy.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/url_constants.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extensions_browser_client.h"
#include "extensions/browser/mojo/service_registration.h"
#include "extensions/browser/process_manager.h"
#include "extensions/browser/view_type_utils.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension_messages.h"
namespace extensions {
namespace {
const Extension* GetExtensionForRenderFrame(
content::RenderFrameHost* render_frame_host) {
content::SiteInstance* site_instance = render_frame_host->GetSiteInstance();
GURL url = render_frame_host->GetLastCommittedURL();
if (!url.is_empty()) {
if (site_instance->GetSiteURL().GetOrigin() != url.GetOrigin())
return nullptr;
} else {
url = site_instance->GetSiteURL();
}
content::BrowserContext* browser_context = site_instance->GetBrowserContext();
if (!url.SchemeIs(kExtensionScheme))
return nullptr;
return ExtensionRegistry::Get(browser_context)
->enabled_extensions()
.GetExtensionOrAppByURL(url);
}
} // namespace
ExtensionWebContentsObserver::ExtensionWebContentsObserver(
content::WebContents* web_contents)
: content::WebContentsObserver(web_contents),
browser_context_(web_contents->GetBrowserContext()) {
NotifyRenderViewType(web_contents->GetRenderViewHost());
content::RenderFrameHost* host = web_contents->GetMainFrame();
if (host)
RenderFrameHostChanged(nullptr, host);
}
ExtensionWebContentsObserver::~ExtensionWebContentsObserver() {
}
void ExtensionWebContentsObserver::RenderViewCreated(
content::RenderViewHost* render_view_host) {
NotifyRenderViewType(render_view_host);
const Extension* extension = GetExtension(render_view_host);
if (!extension)
return;
content::RenderProcessHost* process = render_view_host->GetProcess();
// Some extensions use chrome:// URLs.
// This is a temporary solution. Replace it with access to chrome-static://
// once it is implemented. See: crbug.com/226927.
Manifest::Type type = extension->GetType();
if (type == Manifest::TYPE_EXTENSION ||
type == Manifest::TYPE_LEGACY_PACKAGED_APP ||
(type == Manifest::TYPE_PLATFORM_APP &&
extension->location() == Manifest::COMPONENT)) {
content::ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
process->GetID(), content::kChromeUIScheme);
}
// Some extensions use file:// URLs.
if (type == Manifest::TYPE_EXTENSION ||
type == Manifest::TYPE_LEGACY_PACKAGED_APP) {
ExtensionPrefs* prefs = ExtensionPrefs::Get(browser_context_);
if (prefs->AllowFileAccess(extension->id())) {
content::ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
process->GetID(), url::kFileScheme);
}
}
switch (type) {
case Manifest::TYPE_EXTENSION:
case Manifest::TYPE_USER_SCRIPT:
case Manifest::TYPE_HOSTED_APP:
case Manifest::TYPE_LEGACY_PACKAGED_APP:
case Manifest::TYPE_PLATFORM_APP:
// Always send a Loaded message before ActivateExtension so that
// ExtensionDispatcher knows what Extension is active, not just its ID.
// This is important for classifying the Extension's JavaScript context
// correctly (see ExtensionDispatcher::ClassifyJavaScriptContext).
// We also have to include the tab-specific permissions here, since it's
// an extension process.
render_view_host->Send(
new ExtensionMsg_Loaded(std::vector<ExtensionMsg_Loaded_Params>(
1, ExtensionMsg_Loaded_Params(
extension, true /* include tab permissions */))));
render_view_host->Send(
new ExtensionMsg_ActivateExtension(extension->id()));
break;
case Manifest::TYPE_UNKNOWN:
case Manifest::TYPE_THEME:
case Manifest::TYPE_SHARED_MODULE:
break;
case Manifest::NUM_LOAD_TYPES:
NOTREACHED();
}
}
void ExtensionWebContentsObserver::RenderFrameCreated(
content::RenderFrameHost* render_frame_host) {
const Extension* extension = GetExtensionForRenderFrame(render_frame_host);
if (extension) {
ExtensionsBrowserClient::Get()->RegisterMojoServices(render_frame_host,
extension);
}
}
void ExtensionWebContentsObserver::FrameDeleted(
content::RenderFrameHost* render_frame_host) {
ProcessManager::Get(browser_context_)->UnregisterRenderFrameHost(
render_frame_host);
}
void ExtensionWebContentsObserver::RenderFrameHostChanged(
content::RenderFrameHost* old_host,
content::RenderFrameHost* new_host) {
ProcessManager* process_manager = ProcessManager::Get(browser_context_);
if (old_host)
process_manager->UnregisterRenderFrameHost(old_host);
const Extension* extension = GetExtension(new_host->GetRenderViewHost());
if (extension) {
process_manager->RegisterRenderFrameHost(
web_contents(), new_host, extension);
}
}
void ExtensionWebContentsObserver::NotifyRenderViewType(
content::RenderViewHost* render_view_host) {
if (render_view_host) {
render_view_host->Send(new ExtensionMsg_NotifyRenderViewType(
render_view_host->GetRoutingID(), GetViewType(web_contents())));
}
}
const Extension* ExtensionWebContentsObserver::GetExtension(
content::RenderViewHost* render_view_host) {
std::string extension_id = GetExtensionId(render_view_host);
if (extension_id.empty())
return NULL;
// May be null if the extension doesn't exist, for example if somebody typos
// a chrome-extension:// URL.
return ExtensionRegistry::Get(browser_context_)
->GetExtensionById(extension_id, ExtensionRegistry::ENABLED);
}
// static
std::string ExtensionWebContentsObserver::GetExtensionId(
content::RenderViewHost* render_view_host) {
// Note that due to ChromeContentBrowserClient::GetEffectiveURL(), hosted apps
// (excluding bookmark apps) will have a chrome-extension:// URL for their
// site, so we can ignore that wrinkle here.
const GURL& site = render_view_host->GetSiteInstance()->GetSiteURL();
if (!site.SchemeIs(kExtensionScheme))
return std::string();
return site.host();
}
} // namespace extensions
|
