Index: content/renderer/pepper/plugin_object.cc |
diff --git a/content/renderer/pepper/plugin_object.cc b/content/renderer/pepper/plugin_object.cc |
index 7260b01bb0bf75d6ef81f9e24f76026a05d7de2e..256c0a3fd76e8813a963e334212dd7ca23240a53 100644 |
--- a/content/renderer/pepper/plugin_object.cc |
+++ b/content/renderer/pepper/plugin_object.cc |
@@ -4,23 +4,14 @@ |
#include "content/renderer/pepper/plugin_object.h" |
-#include "base/bind.h" |
#include "base/logging.h" |
#include "base/memory/ref_counted.h" |
#include "base/memory/scoped_ptr.h" |
#include "base/strings/string_number_conversions.h" |
#include "base/strings/string_util.h" |
+#include "content/renderer/pepper/npapi_glue.h" |
#include "content/renderer/pepper/pepper_plugin_instance_impl.h" |
-#include "content/renderer/pepper/pepper_try_catch.h" |
#include "content/renderer/pepper/plugin_module.h" |
-#include "content/renderer/pepper/v8_var_converter.h" |
-#include "gin/arguments.h" |
-#include "gin/converter.h" |
-#include "gin/function_template.h" |
-#include "gin/handle.h" |
-#include "gin/interceptor.h" |
-#include "gin/object_template_builder.h" |
-#include "gin/public/gin_embedders.h" |
#include "ppapi/c/dev/ppb_var_deprecated.h" |
#include "ppapi/c/dev/ppp_class_deprecated.h" |
#include "ppapi/c/pp_resource.h" |
@@ -29,12 +20,14 @@ |
#include "ppapi/shared_impl/resource_tracker.h" |
#include "ppapi/shared_impl/var.h" |
#include "ppapi/shared_impl/var_tracker.h" |
+#include "third_party/WebKit/public/web/WebBindings.h" |
+#include "third_party/npapi/bindings/npapi.h" |
+#include "third_party/npapi/bindings/npruntime.h" |
using ppapi::PpapiGlobals; |
-using ppapi::ScopedPPVar; |
-using ppapi::ScopedPPVarArray; |
using ppapi::StringVar; |
using ppapi::Var; |
+using blink::WebBindings; |
namespace content { |
@@ -42,191 +35,333 @@ |
const char kInvalidValueException[] = "Error: Invalid value"; |
+// NPObject implementation in terms of PPP_Class_Deprecated -------------------- |
+ |
+NPObject* WrapperClass_Allocate(NPP npp, NPClass* unused) { |
+ return PluginObject::AllocateObjectWrapper(); |
+} |
+ |
+void WrapperClass_Deallocate(NPObject* np_object) { |
+ PluginObject* plugin_object = PluginObject::FromNPObject(np_object); |
+ if (plugin_object) { |
+ plugin_object->ppp_class()->Deallocate(plugin_object->ppp_class_data()); |
+ delete plugin_object; |
+ } |
+ delete np_object; |
+} |
+ |
+void WrapperClass_Invalidate(NPObject* object) {} |
+ |
+bool WrapperClass_HasMethod(NPObject* object, NPIdentifier method_name) { |
+ NPObjectAccessorWithIdentifier accessor(object, method_name, false); |
+ if (!accessor.is_valid()) |
+ return false; |
+ |
+ PPResultAndExceptionToNPResult result_converter( |
+ accessor.object()->GetNPObject(), NULL); |
+ bool rv = accessor.object()->ppp_class()->HasMethod( |
+ accessor.object()->ppp_class_data(), |
+ accessor.identifier(), |
+ result_converter.exception()); |
+ result_converter.CheckExceptionForNoResult(); |
+ return rv; |
+} |
+ |
+bool WrapperClass_Invoke(NPObject* object, |
+ NPIdentifier method_name, |
+ const NPVariant* argv, |
+ uint32_t argc, |
+ NPVariant* result) { |
+ NPObjectAccessorWithIdentifier accessor(object, method_name, false); |
+ if (!accessor.is_valid()) |
+ return false; |
+ |
+ PPResultAndExceptionToNPResult result_converter( |
+ accessor.object()->GetNPObject(), result); |
+ PPVarArrayFromNPVariantArray args(accessor.object()->instance(), argc, argv); |
+ |
+ // For the OOP plugin case we need to grab a reference on the plugin module |
+ // object to ensure that it is not destroyed courtsey an incoming |
+ // ExecuteScript call which destroys the plugin module and in turn the |
+ // dispatcher. |
+ scoped_refptr<PluginModule> ref(accessor.object()->instance()->module()); |
+ |
+ return result_converter.SetResult( |
+ accessor.object()->ppp_class()->Call(accessor.object()->ppp_class_data(), |
+ accessor.identifier(), |
+ argc, |
+ args.array(), |
+ result_converter.exception())); |
+} |
+ |
+bool WrapperClass_InvokeDefault(NPObject* np_object, |
+ const NPVariant* argv, |
+ uint32_t argc, |
+ NPVariant* result) { |
+ PluginObject* obj = PluginObject::FromNPObject(np_object); |
+ if (!obj) |
+ return false; |
+ |
+ PPVarArrayFromNPVariantArray args(obj->instance(), argc, argv); |
+ PPResultAndExceptionToNPResult result_converter(obj->GetNPObject(), result); |
+ |
+ // For the OOP plugin case we need to grab a reference on the plugin module |
+ // object to ensure that it is not destroyed courtsey an incoming |
+ // ExecuteScript call which destroys the plugin module and in turn the |
+ // dispatcher. |
+ scoped_refptr<PluginModule> ref(obj->instance()->module()); |
+ |
+ result_converter.SetResult( |
+ obj->ppp_class()->Call(obj->ppp_class_data(), |
+ PP_MakeUndefined(), |
+ argc, |
+ args.array(), |
+ result_converter.exception())); |
+ return result_converter.success(); |
+} |
+ |
+bool WrapperClass_HasProperty(NPObject* object, NPIdentifier property_name) { |
+ NPObjectAccessorWithIdentifier accessor(object, property_name, true); |
+ if (!accessor.is_valid()) |
+ return false; |
+ |
+ PPResultAndExceptionToNPResult result_converter( |
+ accessor.object()->GetNPObject(), NULL); |
+ bool rv = accessor.object()->ppp_class()->HasProperty( |
+ accessor.object()->ppp_class_data(), |
+ accessor.identifier(), |
+ result_converter.exception()); |
+ result_converter.CheckExceptionForNoResult(); |
+ return rv; |
+} |
+ |
+bool WrapperClass_GetProperty(NPObject* object, |
+ NPIdentifier property_name, |
+ NPVariant* result) { |
+ NPObjectAccessorWithIdentifier accessor(object, property_name, true); |
+ if (!accessor.is_valid()) |
+ return false; |
+ |
+ PPResultAndExceptionToNPResult result_converter( |
+ accessor.object()->GetNPObject(), result); |
+ return result_converter.SetResult(accessor.object()->ppp_class()->GetProperty( |
+ accessor.object()->ppp_class_data(), |
+ accessor.identifier(), |
+ result_converter.exception())); |
+} |
+ |
+bool WrapperClass_SetProperty(NPObject* object, |
+ NPIdentifier property_name, |
+ const NPVariant* value) { |
+ NPObjectAccessorWithIdentifier accessor(object, property_name, true); |
+ if (!accessor.is_valid()) |
+ return false; |
+ |
+ PPResultAndExceptionToNPResult result_converter( |
+ accessor.object()->GetNPObject(), NULL); |
+ PP_Var value_var = NPVariantToPPVar(accessor.object()->instance(), value); |
+ accessor.object()->ppp_class()->SetProperty( |
+ accessor.object()->ppp_class_data(), |
+ accessor.identifier(), |
+ value_var, |
+ result_converter.exception()); |
+ PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(value_var); |
+ return result_converter.CheckExceptionForNoResult(); |
+} |
+ |
+bool WrapperClass_RemoveProperty(NPObject* object, NPIdentifier property_name) { |
+ NPObjectAccessorWithIdentifier accessor(object, property_name, true); |
+ if (!accessor.is_valid()) |
+ return false; |
+ |
+ PPResultAndExceptionToNPResult result_converter( |
+ accessor.object()->GetNPObject(), NULL); |
+ accessor.object()->ppp_class()->RemoveProperty( |
+ accessor.object()->ppp_class_data(), |
+ accessor.identifier(), |
+ result_converter.exception()); |
+ return result_converter.CheckExceptionForNoResult(); |
+} |
+ |
+bool WrapperClass_Enumerate(NPObject* object, |
+ NPIdentifier** values, |
+ uint32_t* count) { |
+ *values = NULL; |
+ *count = 0; |
+ PluginObject* obj = PluginObject::FromNPObject(object); |
+ if (!obj) |
+ return false; |
+ |
+ uint32_t property_count = 0; |
+ PP_Var* properties = NULL; // Must be freed! |
+ PPResultAndExceptionToNPResult result_converter(obj->GetNPObject(), NULL); |
+ obj->ppp_class()->GetAllPropertyNames(obj->ppp_class_data(), |
+ &property_count, |
+ &properties, |
+ result_converter.exception()); |
+ |
+ // Convert the array of PP_Var to an array of NPIdentifiers. If any |
+ // conversions fail, we will set the exception. |
+ if (!result_converter.has_exception()) { |
+ if (property_count > 0) { |
+ *values = static_cast<NPIdentifier*>( |
+ calloc(property_count, sizeof(NPIdentifier))); |
+ *count = 0; // Will be the number of items successfully converted. |
+ for (uint32_t i = 0; i < property_count; ++i) { |
+ (*values)[i] = PPVarToNPIdentifier(properties[i]); |
+ if (!(*values)[i]) { |
+ // Throw an exception for the failed convertion. |
+ *result_converter.exception() = |
+ StringVar::StringToPPVar(kInvalidValueException); |
+ break; |
+ } |
+ (*count)++; |
+ } |
+ |
+ if (result_converter.has_exception()) { |
+ // We don't actually have to free the identifiers we converted since |
+ // all identifiers leak anyway :( . |
+ free(*values); |
+ *values = NULL; |
+ *count = 0; |
+ } |
+ } |
+ } |
+ |
+ // This will actually throw the exception, either from GetAllPropertyNames, |
+ // or if anything was set during the conversion process. |
+ result_converter.CheckExceptionForNoResult(); |
+ |
+ // Release the PP_Var that the plugin allocated. On success, they will all |
+ // be converted to NPVariants, and on failure, we want them to just go away. |
+ ppapi::VarTracker* var_tracker = PpapiGlobals::Get()->GetVarTracker(); |
+ for (uint32_t i = 0; i < property_count; ++i) |
+ var_tracker->ReleaseVar(properties[i]); |
+ free(properties); |
+ return result_converter.success(); |
+} |
+ |
+bool WrapperClass_Construct(NPObject* object, |
+ const NPVariant* argv, |
+ uint32_t argc, |
+ NPVariant* result) { |
+ PluginObject* obj = PluginObject::FromNPObject(object); |
+ if (!obj) |
+ return false; |
+ |
+ PPVarArrayFromNPVariantArray args(obj->instance(), argc, argv); |
+ PPResultAndExceptionToNPResult result_converter(obj->GetNPObject(), result); |
+ return result_converter.SetResult(obj->ppp_class()->Construct( |
+ obj->ppp_class_data(), argc, args.array(), result_converter.exception())); |
+} |
+ |
+const NPClass wrapper_class = { |
+ NP_CLASS_STRUCT_VERSION, WrapperClass_Allocate, |
+ WrapperClass_Deallocate, WrapperClass_Invalidate, |
+ WrapperClass_HasMethod, WrapperClass_Invoke, |
+ WrapperClass_InvokeDefault, WrapperClass_HasProperty, |
+ WrapperClass_GetProperty, WrapperClass_SetProperty, |
+ WrapperClass_RemoveProperty, WrapperClass_Enumerate, |
+ WrapperClass_Construct}; |
+ |
} // namespace |
// PluginObject ---------------------------------------------------------------- |
+struct PluginObject::NPObjectWrapper : public NPObject { |
+ // Points to the var object that owns this wrapper. This value may be NULL |
+ // if there is no var owning this wrapper. This can happen if the plugin |
+ // releases all references to the var, but a reference to the underlying |
+ // NPObject is still held by script on the page. |
+ PluginObject* obj; |
+}; |
+ |
+PluginObject::PluginObject(PepperPluginInstanceImpl* instance, |
+ NPObjectWrapper* object_wrapper, |
+ const PPP_Class_Deprecated* ppp_class, |
+ void* ppp_class_data) |
+ : instance_(instance), |
+ object_wrapper_(object_wrapper), |
+ ppp_class_(ppp_class), |
+ ppp_class_data_(ppp_class_data) { |
+ // Make the object wrapper refer back to this class so our NPObject |
+ // implementation can call back into the Pepper layer. |
+ object_wrapper_->obj = this; |
+ instance_->AddPluginObject(this); |
+} |
+ |
PluginObject::~PluginObject() { |
- if (instance_) { |
- ppp_class_->Deallocate(ppp_class_data_); |
- instance_->RemovePluginObject(this); |
- } |
-} |
- |
-// static |
-gin::WrapperInfo PluginObject::kWrapperInfo = {gin::kEmbedderNativeGin}; |
- |
-// static |
-PluginObject* PluginObject::FromV8Object(v8::Isolate* isolate, |
- v8::Handle<v8::Object> v8_object) { |
- PluginObject* plugin_object; |
- if (!v8_object.IsEmpty() && |
- gin::ConvertFromV8(isolate, v8_object, &plugin_object)) { |
- return plugin_object; |
- } |
- return NULL; |
-} |
- |
-// static |
+ // The wrapper we made for this NPObject may still have a reference to it |
+ // from JavaScript, so we clear out its ObjectVar back pointer which will |
+ // cause all calls "up" to the plugin to become NOPs. Our ObjectVar base |
+ // class will release our reference to the object, which may or may not |
+ // delete the NPObject. |
+ DCHECK(object_wrapper_->obj == this); |
+ object_wrapper_->obj = NULL; |
+ instance_->RemovePluginObject(this); |
+} |
+ |
PP_Var PluginObject::Create(PepperPluginInstanceImpl* instance, |
const PPP_Class_Deprecated* ppp_class, |
void* ppp_class_data) { |
- PepperTryCatchVar try_catch(instance, NULL); |
- gin::Handle<PluginObject> object = |
- gin::CreateHandle(instance->GetIsolate(), |
- new PluginObject(instance, ppp_class, ppp_class_data)); |
- ScopedPPVar result = try_catch.FromV8(object.ToV8()); |
- DCHECK(!try_catch.HasException()); |
- return result.Release(); |
-} |
- |
-v8::Local<v8::Value> PluginObject::GetNamedProperty( |
- v8::Isolate* isolate, |
- const std::string& identifier) { |
- ScopedPPVar identifier_var(ScopedPPVar::PassRef(), |
- StringVar::StringToPPVar(identifier)); |
- return GetPropertyOrMethod(instance_->GetIsolate(), identifier_var.get()); |
-} |
- |
-std::vector<std::string> PluginObject::EnumerateNamedProperties( |
- v8::Isolate* isolate) { |
- std::vector<std::string> result; |
- if (!instance_) |
- return result; |
- |
- PepperTryCatchV8 try_catch(instance_, V8VarConverter::kAllowObjectVars, |
- isolate); |
- |
- PP_Var* name_vars; |
- uint32_t count = 0; |
- ppp_class_->GetAllPropertyNames(ppp_class_data_, &count, &name_vars, |
- try_catch.exception()); |
- ScopedPPVarArray scoped_name_vars( |
- ScopedPPVarArray::PassPPBMemoryAllocatedArray(), name_vars, count); |
- |
- if (try_catch.ThrowException()) |
- return result; |
- |
- for (uint32_t i = 0; i < count; ++i) { |
- StringVar* string_var = StringVar::FromPPVar(name_vars[i]); |
- if (string_var) { |
- result.push_back(string_var->value()); |
- } else { |
- try_catch.ThrowException(kInvalidValueException); |
- result.clear(); |
- return result; |
- } |
- } |
- |
- return result; |
-} |
- |
-void PluginObject::InstanceDeleted() { |
- instance_ = NULL; |
-} |
- |
-PluginObject::PluginObject(PepperPluginInstanceImpl* instance, |
- const PPP_Class_Deprecated* ppp_class, |
- void* ppp_class_data) |
- : gin::NamedPropertyInterceptor(instance->GetIsolate(), this), |
- instance_(instance), |
- ppp_class_(ppp_class), |
- ppp_class_data_(ppp_class_data), |
- weak_factory_(this) { |
- instance_->AddPluginObject(this); |
-} |
- |
-gin::ObjectTemplateBuilder PluginObject::GetObjectTemplateBuilder( |
- v8::Isolate* isolate) { |
- return Wrappable<PluginObject>::GetObjectTemplateBuilder(isolate) |
- .AddNamedPropertyInterceptor(); |
-} |
- |
-v8::Local<v8::Value> PluginObject::GetPropertyOrMethod(v8::Isolate* isolate, |
- PP_Var identifier_var) { |
- if (!instance_) |
- return v8::Local<v8::Value>(); |
- |
- PepperTryCatchV8 try_catch(instance_, V8VarConverter::kAllowObjectVars, |
- isolate); |
- bool has_property = |
- ppp_class_->HasProperty(ppp_class_data_, identifier_var, |
- try_catch.exception()); |
- if (try_catch.ThrowException()) |
- return v8::Local<v8::Value>(); |
- |
- if (has_property) { |
- ScopedPPVar result_var(ScopedPPVar::PassRef(), |
- ppp_class_->GetProperty(ppp_class_data_, identifier_var, |
- try_catch.exception())); |
- if (try_catch.ThrowException()) |
- return v8::Local<v8::Value>(); |
- |
- v8::Handle<v8::Value> result = try_catch.ToV8(result_var.get()); |
- if (try_catch.ThrowException()) |
- return v8::Local<v8::Value>(); |
- |
- return result; |
- } |
- |
- bool has_method = identifier_var.type == PP_VARTYPE_STRING && |
- ppp_class_->HasMethod(ppp_class_data_, identifier_var, |
- try_catch.exception()); |
- if (try_catch.ThrowException()) |
- return v8::Local<v8::Value>(); |
- |
- if (has_method) { |
- const std::string& identifier = |
- StringVar::FromPPVar(identifier_var)->value(); |
- return gin::CreateFunctionTemplate(isolate, |
- base::Bind(&PluginObject::Call, |
- weak_factory_.GetWeakPtr(), |
- identifier))->GetFunction(); |
- } |
- |
- return v8::Local<v8::Value>(); |
-} |
- |
-void PluginObject::Call(const std::string& identifier, |
- gin::Arguments* args) { |
- if (!instance_) |
- return; |
- |
- PepperTryCatchV8 try_catch(instance_, V8VarConverter::kAllowObjectVars, |
- args->isolate()); |
- ScopedPPVar identifier_var(ScopedPPVar::PassRef(), |
- StringVar::StringToPPVar(identifier)); |
- ScopedPPVarArray argument_vars(args->Length()); |
- |
- for (uint32_t i = 0; i < argument_vars.size(); ++i) { |
- v8::Handle<v8::Value> arg; |
- if (!args->GetNext(&arg)) { |
- NOTREACHED(); |
- } |
- |
- argument_vars.Set(i, try_catch.FromV8(arg)); |
- if (try_catch.ThrowException()) |
- return; |
- } |
- |
- // For the OOP plugin case we need to grab a reference on the plugin module |
- // object to ensure that it is not destroyed courtesy an incoming |
- // ExecuteScript call which destroys the plugin module and in turn the |
- // dispatcher. |
- scoped_refptr<PluginModule> ref(instance_->module()); |
- |
- ScopedPPVar result_var(ScopedPPVar::PassRef(), |
- ppp_class_->Call(ppp_class_data_, identifier_var.get(), |
- argument_vars.size(), argument_vars.get(), |
- try_catch.exception())); |
- if (try_catch.ThrowException()) |
- return; |
- |
- v8::Handle<v8::Value> result = try_catch.ToV8(result_var.get()); |
- if (try_catch.ThrowException()) |
- return; |
- |
- args->Return(result); |
+ // This will internally end up calling our AllocateObjectWrapper via the |
+ // WrapperClass_Allocated function which will have created an object wrapper |
+ // appropriate for this class (derived from NPObject). |
+ NPObjectWrapper* wrapper = |
+ static_cast<NPObjectWrapper*>(WebBindings::createObject( |
+ instance->instanceNPP(), const_cast<NPClass*>(&wrapper_class))); |
+ |
+ // This object will register itself both with the NPObject and with the |
+ // PluginModule. The NPObject will normally handle its lifetime, and it |
+ // will get deleted in the destroy method. It may also get deleted when the |
+ // plugin module is deallocated. |
+ new PluginObject(instance, wrapper, ppp_class, ppp_class_data); |
+ |
+ // We can just use a normal ObjectVar to refer to this object from the |
+ // plugin. It will hold a ref to the underlying NPObject which will in turn |
+ // hold our pluginObject. |
+ PP_Var obj_var(NPObjectToPPVar(instance, wrapper)); |
+ |
+ // Note that the ObjectVar constructor incremented the reference count, and so |
+ // did WebBindings::createObject above. Now that the PP_Var has taken |
+ // ownership, we need to release to balance out the createObject reference |
+ // count bump. |
+ WebBindings::releaseObject(wrapper); |
+ return obj_var; |
+} |
+ |
+NPObject* PluginObject::GetNPObject() const { return object_wrapper_; } |
+ |
+// static |
+bool PluginObject::IsInstanceOf(NPObject* np_object, |
+ const PPP_Class_Deprecated* ppp_class, |
+ void** ppp_class_data) { |
+ // Validate that this object is implemented by our wrapper class before |
+ // trying to get the PluginObject. |
+ if (np_object->_class != &wrapper_class) |
+ return false; |
+ |
+ PluginObject* plugin_object = FromNPObject(np_object); |
+ if (!plugin_object) |
+ return false; // Object is no longer alive. |
+ |
+ if (plugin_object->ppp_class() != ppp_class) |
+ return false; |
+ if (ppp_class_data) |
+ *ppp_class_data = plugin_object->ppp_class_data(); |
+ return true; |
+} |
+ |
+// static |
+PluginObject* PluginObject::FromNPObject(NPObject* object) { |
+ return static_cast<NPObjectWrapper*>(object)->obj; |
+} |
+ |
+// static |
+NPObject* PluginObject::AllocateObjectWrapper() { |
+ NPObjectWrapper* wrapper = new NPObjectWrapper; |
+ memset(wrapper, 0, sizeof(NPObjectWrapper)); |
+ return wrapper; |
} |
} // namespace content |