Respect the clipboardRead and clipboardWrite permissions in content scripts.

extensions/renderer/script_context.cc

 // 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/renderer/script_context.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
@@ skipping 12 matching lines @@
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebScopedMicrotaskSuppression.h"
 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
 #include "third_party/WebKit/public/web/WebView.h"
 #include "v8/include/v8.h"
 
 using content::V8ValueConverter;
 
 namespace extensions {
 
+namespace {
+
+std::string GetContextTypeDescriptionString(Feature::Context context_type) {
+  switch (context_type) {
+    case Feature::UNSPECIFIED_CONTEXT:
+      return "UNSPECIFIED";
+    case Feature::BLESSED_EXTENSION_CONTEXT:
+      return "BLESSED_EXTENSION";
+    case Feature::UNBLESSED_EXTENSION_CONTEXT:
+      return "UNBLESSED_EXTENSION";
+    case Feature::CONTENT_SCRIPT_CONTEXT:
+      return "CONTENT_SCRIPT";
+    case Feature::WEB_PAGE_CONTEXT:
+      return "WEB_PAGE";
+    case Feature::BLESSED_WEB_PAGE_CONTEXT:
+      return "BLESSED_WEB_PAGE";
+    case Feature::WEBUI_CONTEXT:
+      return "WEBUI";
+  }
+  NOTREACHED();
+  return std::string();
+}
+
+const std::string& GetIDForExtension(const Extension* extension) {
+  if (extension)
+    return extension->id();
+  return base::EmptyString();

[Devlin, 2014/09/04 19:15:11]

base::EmptyString is expensive.  It'd probably be better to just return a
std::string(), or inline this into the logs (I don't think extension_ ?
extension_->id() : "" is that long/unreadable - but that's just me).

[Marijn Kruisselbrink, 2014/09/04 23:41:11]

Good point, done.

+}
+
+}  // namespace
+
 ScriptContext::ScriptContext(const v8::Handle<v8::Context>& v8_context,
                              blink::WebFrame* web_frame,
                              const Extension* extension,
-                             Feature::Context context_type)
+                             Feature::Context context_type,
+                             const Extension* effective_extension,
+                             Feature::Context effective_context_type)
     : v8_context_(v8_context),
       web_frame_(web_frame),
       extension_(extension),
       context_type_(context_type),
+      effective_extension_(effective_extension),
+      effective_context_type_(effective_context_type),
       safe_builtins_(this),
       isolate_(v8_context->GetIsolate()) {
   VLOG(1) << "Created context:\n"
           << "  extension id: " << GetExtensionID() << "\n"
           << "  frame:        " << web_frame_ << "\n"
           << "  URL:          " << GetURL() << "\n"
-          << "  context type: " << GetContextTypeDescription();
+          << "  context type: " << GetContextTypeDescription() << "\n"
+          << "  effective extension id: "
+          << GetIDForExtension(effective_extension_.get()) << "\n"
+          << "  effective context type: "
+          << GetEffectiveContextTypeDescription();
   gin::PerContextData::From(v8_context)->set_runner(this);
 }
 
 ScriptContext::~ScriptContext() {
   VLOG(1) << "Destroyed context for extension\n"
-          << "  extension id: " << GetExtensionID();
+          << "  extension id: " << GetExtensionID() << "\n"
+          << "  effective extension id: "
+          << GetIDForExtension(effective_extension_.get());
   Invalidate();
 }
 
 void ScriptContext::Invalidate() {
   if (!is_valid())
     return;
   if (module_system_)
     module_system_->Invalidate();
   web_frame_ = NULL;
   v8_context_.reset();
@@ skipping 62 matching lines @@
       kEventBindings, "dispatchEvent", arraysize(argv), argv);
 }
 
 void ScriptContext::DispatchOnUnloadEvent() {
   v8::HandleScope handle_scope(isolate());
   v8::Context::Scope context_scope(v8_context());
   module_system_->CallModuleMethod("unload_event", "dispatch");
 }
 
 std::string ScriptContext::GetContextTypeDescription() {
-  switch (context_type_) {
-    case Feature::UNSPECIFIED_CONTEXT:
-      return "UNSPECIFIED";
-    case Feature::BLESSED_EXTENSION_CONTEXT:
-      return "BLESSED_EXTENSION";
-    case Feature::UNBLESSED_EXTENSION_CONTEXT:
-      return "UNBLESSED_EXTENSION";
-    case Feature::CONTENT_SCRIPT_CONTEXT:
-      return "CONTENT_SCRIPT";
-    case Feature::WEB_PAGE_CONTEXT:
-      return "WEB_PAGE";
-    case Feature::BLESSED_WEB_PAGE_CONTEXT:
-      return "BLESSED_WEB_PAGE";
-    case Feature::WEBUI_CONTEXT:
-      return "WEBUI";
-  }
-  NOTREACHED();
-  return std::string();
+  return GetContextTypeDescriptionString(context_type_);
+}
+
+std::string ScriptContext::GetEffectiveContextTypeDescription() {
+  return GetContextTypeDescriptionString(effective_context_type_);
 }
 
 GURL ScriptContext::GetURL() const {
   return web_frame() ? GetDataSourceURLForFrame(web_frame()) : GURL();
 }
 
 bool ScriptContext::IsAnyFeatureAvailableToContext(const Feature& api) {
   return ExtensionAPI::GetSharedInstance()->IsAnyFeatureAvailableToContext(
       api, extension(), context_type(), GetDataSourceURLForFrame(web_frame()));
 }
@@ skipping 80 matching lines @@
                                           v8::Handle<v8::Value> argv[]) {
   return CallFunction(function, argc, argv);
 }
 
 gin::ContextHolder* ScriptContext::GetContextHolder() {
   v8::HandleScope handle_scope(isolate());
   return gin::PerContextData::From(v8_context())->context_holder();
 }
 
 }  // namespace extensions