File: extensions_renderer_client.cc

package info (click to toggle)
chromium 139.0.7258.127-1
  • links: PTS, VCS
  • area: main
  • in suites:
  • size: 6,122,068 kB
  • sloc: cpp: 35,100,771; ansic: 7,163,530; javascript: 4,103,002; python: 1,436,920; asm: 946,517; xml: 746,709; pascal: 187,653; perl: 88,691; sh: 88,436; objc: 79,953; sql: 51,488; cs: 44,583; fortran: 24,137; makefile: 22,147; tcl: 15,277; php: 13,980; yacc: 8,984; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (267 lines) | stat: -rw-r--r-- 9,389 bytes parent folder | download | duplicates (6)
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
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "extensions/renderer/extensions_renderer_client.h"

#include <memory>
#include <ostream>

#include "base/check.h"
#include "base/functional/bind.h"
#include "components/guest_view/buildflags/buildflags.h"
#include "content/public/common/content_constants.h"
#include "content/public/common/content_switches.h"
#include "content/public/renderer/render_frame.h"
#include "content/public/renderer/render_thread.h"
#include "extensions/buildflags/buildflags.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension.h"
#include "extensions/common/mojom/context_type.mojom.h"
#include "extensions/common/switches.h"
#include "extensions/renderer/dispatcher.h"
#include "extensions/renderer/extension_frame_helper.h"
#include "extensions/renderer/extension_web_view_helper.h"
#include "extensions/renderer/extensions_render_frame_observer.h"
#include "extensions/renderer/resource_request_policy.h"
#include "extensions/renderer/script_context.h"
#include "third_party/blink/public/common/security/protocol_handler_security_level.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/public/web/web_document.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_plugin_params.h"

#if BUILDFLAG(ENABLE_GUEST_VIEW)
#include "extensions/renderer/guest_view/mime_handler_view/mime_handler_view_container_manager.h"
#endif

namespace extensions {

namespace {

ExtensionsRendererClient* g_client = nullptr;

#if BUILDFLAG(ENABLE_GUEST_VIEW)
void IsGuestViewApiAvailableToScriptContext(bool* api_is_available,
                                            ScriptContext* context) {
  if (context->GetAvailability("guestViewInternal").is_available()) {
    *api_is_available = true;
  }
}
#endif

}  // namespace

ExtensionsRendererClient::ExtensionsRendererClient() = default;
ExtensionsRendererClient::~ExtensionsRendererClient() = default;

ExtensionsRendererClient* ExtensionsRendererClient::Get() {
  CHECK(g_client);
  return g_client;
}

void ExtensionsRendererClient::Set(ExtensionsRendererClient* client) {
  g_client = client;
}

void ExtensionsRendererClient::OnExtensionLoaded(const Extension& extension) {
  resource_request_policy_->OnExtensionLoaded(extension);
}

void ExtensionsRendererClient::OnExtensionUnloaded(
    const ExtensionId& extension_id) {
  resource_request_policy_->OnExtensionUnloaded(extension_id);
}

void ExtensionsRendererClient::AddAPIProvider(
    std::unique_ptr<ExtensionsRendererAPIProvider> api_provider) {
  CHECK(!dispatcher_)
      << "API providers must be added before the Dispatcher is instantiated.";
  api_providers_.push_back(std::move(api_provider));
}

void ExtensionsRendererClient::RenderThreadStarted() {
  // Tests may create their own ExtensionDispatcher and inject it using
  // `SetDispatcherForTesting()`. Don't overwrite it.
  if (!dispatcher()) {
    dispatcher_ = std::make_unique<Dispatcher>(std::move(api_providers_));
  }
  content::RenderThread* thread = content::RenderThread::Get();
  dispatcher()->OnRenderThreadStarted(thread);
  thread->AddObserver(dispatcher());

  resource_request_policy_ = std::make_unique<ResourceRequestPolicy>(
      dispatcher(), CreateResourceRequestPolicyDelegate());

  FinishInitialization();
}

void ExtensionsRendererClient::WebViewCreated(
    blink::WebView* web_view,
    const url::Origin* outermost_origin) {
  new ExtensionWebViewHelper(web_view, outermost_origin);
}

void ExtensionsRendererClient::RenderFrameCreated(
    content::RenderFrame* render_frame,
    service_manager::BinderRegistry* registry) {
  new ExtensionsRenderFrameObserver(render_frame, registry);
  new ExtensionFrameHelper(render_frame, dispatcher());
  dispatcher_->OnRenderFrameCreated(render_frame);
}

bool ExtensionsRendererClient::OverrideCreatePlugin(
    content::RenderFrame* render_frame,
    const blink::WebPluginParams& params) {
#if BUILDFLAG(ENABLE_GUEST_VIEW)
  if (params.mime_type.Utf8() != content::kBrowserPluginMimeType) {
    return true;
  }

  bool guest_view_api_available = false;
  dispatcher_->script_context_set_iterator()->ForEach(
      render_frame, base::BindRepeating(&IsGuestViewApiAvailableToScriptContext,
                                        &guest_view_api_available));
  return !guest_view_api_available;
#else
  return true;
#endif
}

bool ExtensionsRendererClient::AllowPopup() {
  ScriptContext* current_context =
      dispatcher_->script_context_set().GetCurrent();
  if (!current_context || !current_context->extension()) {
    return false;
  }

  // See http://crbug.com/117446 for the subtlety of this check.
  switch (current_context->context_type()) {
    case mojom::ContextType::kUnspecified:
    case mojom::ContextType::kWebPage:
    case mojom::ContextType::kUnprivilegedExtension:
    case mojom::ContextType::kWebUi:
    case mojom::ContextType::kUntrustedWebUi:
    case mojom::ContextType::kOffscreenExtension:
    case mojom::ContextType::kUserScript:
      return false;
    case mojom::ContextType::kPrivilegedExtension:
      return !current_context->IsForServiceWorker();
    case mojom::ContextType::kContentScript:
      return true;
    case mojom::ContextType::kPrivilegedWebPage:
      return current_context->web_frame()->IsOutermostMainFrame();
  }
}

blink::ProtocolHandlerSecurityLevel
ExtensionsRendererClient::GetProtocolHandlerSecurityLevel() {
  // WARNING: This must match the logic of
  // Browser::GetProtocolHandlerSecurityLevel().
  ScriptContext* current_context =
      dispatcher_->script_context_set().GetCurrent();
  if (!current_context || !current_context->extension()) {
    return blink::ProtocolHandlerSecurityLevel::kStrict;
  }

  switch (current_context->context_type()) {
    case mojom::ContextType::kPrivilegedWebPage:
    case mojom::ContextType::kContentScript:
    case mojom::ContextType::kOffscreenExtension:
    case mojom::ContextType::kUnprivilegedExtension:
    case mojom::ContextType::kUnspecified:
    case mojom::ContextType::kUserScript:
    case mojom::ContextType::kWebUi:
    case mojom::ContextType::kUntrustedWebUi:
    case mojom::ContextType::kWebPage:
      return blink::ProtocolHandlerSecurityLevel::kStrict;
    case mojom::ContextType::kPrivilegedExtension:
      return blink::ProtocolHandlerSecurityLevel::kExtensionFeatures;
  }
}

v8::Local<v8::Object> ExtensionsRendererClient::GetScriptableObject(
    const blink::WebElement& plugin_element,
    v8::Isolate* isolate) {
#if BUILDFLAG(ENABLE_GUEST_VIEW)
  // If there is a MimeHandlerView that can provide the scriptable object then
  // MaybeCreateMimeHandlerView must have been called before and a container
  // manager should exist.
  auto* container_manager = MimeHandlerViewContainerManager::Get(
      content::RenderFrame::FromWebFrame(
          plugin_element.GetDocument().GetFrame()),
      false /* create_if_does_not_exist */);
  if (container_manager) {
    return container_manager->GetScriptableObject(plugin_element, isolate);
  }
#endif
  return v8::Local<v8::Object>();
}

// static
blink::WebFrame* ExtensionsRendererClient::FindFrame(
    blink::WebLocalFrame* relative_to_frame,
    const std::string& name) {
  content::RenderFrame* result = ExtensionFrameHelper::FindFrame(
      content::RenderFrame::FromWebFrame(relative_to_frame), name);
  return result ? result->GetWebFrame() : nullptr;
}

void ExtensionsRendererClient::RunScriptsAtDocumentStart(
    content::RenderFrame* render_frame) {
  dispatcher_->RunScriptsAtDocumentStart(render_frame);
}

void ExtensionsRendererClient::RunScriptsAtDocumentEnd(
    content::RenderFrame* render_frame) {
  dispatcher_->RunScriptsAtDocumentEnd(render_frame);
}

void ExtensionsRendererClient::RunScriptsAtDocumentIdle(
    content::RenderFrame* render_frame) {
  dispatcher_->RunScriptsAtDocumentIdle(render_frame);
}

void ExtensionsRendererClient::WillSendRequest(
    blink::WebLocalFrame* frame,
    ui::PageTransition transition_type,
    const blink::WebURL& upstream_url,
    const blink::WebURL& target_url,
    const net::SiteForCookies& site_for_cookies,
    const url::Origin* initiator_origin,
    GURL* new_url) {
  std::string extension_id;
  if (initiator_origin &&
      initiator_origin->scheme() == extensions::kExtensionScheme) {
    extension_id = initiator_origin->host();
  } else {
    if (site_for_cookies.scheme() == extensions::kExtensionScheme) {
      extension_id = site_for_cookies.registrable_domain();
    }
  }

  // The rest of this method is only concerned with extensions URLs.
  if (!target_url.ProtocolIs(extensions::kExtensionScheme)) {
    return;
  }

  if (target_url.ProtocolIs(extensions::kExtensionScheme) &&
      !resource_request_policy_->CanRequestResource(
          upstream_url, target_url, frame, transition_type, initiator_origin)) {
    *new_url = GURL(kExtensionInvalidRequestURL);
  }

  RecordMetricsForURLRequest(frame, target_url);
}

void ExtensionsRendererClient::SetDispatcherForTesting(
    std::unique_ptr<Dispatcher> dispatcher) {
  dispatcher_ = std::move(dispatcher);
}

std::unique_ptr<ResourceRequestPolicy::Delegate>
ExtensionsRendererClient::CreateResourceRequestPolicyDelegate() {
  return nullptr;
}

}  // namespace extensions