| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <node.h> |
| #include <nan.h> |
| #include <uv.h> |
| |
| #include "grpc/grpc.h" |
| #include "grpc/grpc_security.h" |
| #include "grpc/support/log.h" |
| #include "call_credentials.h" |
| #include "call.h" |
| |
| namespace grpc { |
| namespace node { |
| |
| using Nan::Callback; |
| using Nan::EscapableHandleScope; |
| using Nan::HandleScope; |
| using Nan::Maybe; |
| using Nan::MaybeLocal; |
| using Nan::ObjectWrap; |
| using Nan::Persistent; |
| using Nan::Utf8String; |
| |
| using v8::Exception; |
| using v8::External; |
| using v8::Function; |
| using v8::FunctionTemplate; |
| using v8::Integer; |
| using v8::Local; |
| using v8::Object; |
| using v8::ObjectTemplate; |
| using v8::Value; |
| |
| Nan::Callback *CallCredentials::constructor; |
| Persistent<FunctionTemplate> CallCredentials::fun_tpl; |
| |
| CallCredentials::CallCredentials(grpc_call_credentials *credentials) |
| : wrapped_credentials(credentials) {} |
| |
| CallCredentials::~CallCredentials() { |
| grpc_call_credentials_release(wrapped_credentials); |
| } |
| |
| void CallCredentials::Init(Local<Object> exports) { |
| HandleScope scope; |
| Local<FunctionTemplate> tpl = Nan::New<FunctionTemplate>(New); |
| tpl->SetClassName(Nan::New("CallCredentials").ToLocalChecked()); |
| tpl->InstanceTemplate()->SetInternalFieldCount(1); |
| Nan::SetPrototypeMethod(tpl, "compose", Compose); |
| fun_tpl.Reset(tpl); |
| Local<Function> ctr = Nan::GetFunction(tpl).ToLocalChecked(); |
| Nan::Set(ctr, Nan::New("createFromPlugin").ToLocalChecked(), |
| Nan::GetFunction( |
| Nan::New<FunctionTemplate>(CreateFromPlugin)).ToLocalChecked()); |
| Nan::Set(exports, Nan::New("CallCredentials").ToLocalChecked(), ctr); |
| constructor = new Nan::Callback(ctr); |
| } |
| |
| bool CallCredentials::HasInstance(Local<Value> val) { |
| HandleScope scope; |
| return Nan::New(fun_tpl)->HasInstance(val); |
| } |
| |
| Local<Value> CallCredentials::WrapStruct(grpc_call_credentials *credentials) { |
| EscapableHandleScope scope; |
| const int argc = 1; |
| if (credentials == NULL) { |
| return scope.Escape(Nan::Null()); |
| } |
| Local<Value> argv[argc] = { |
| Nan::New<External>(reinterpret_cast<void *>(credentials))}; |
| MaybeLocal<Object> maybe_instance = Nan::NewInstance( |
| constructor->GetFunction(), argc, argv); |
| if (maybe_instance.IsEmpty()) { |
| return scope.Escape(Nan::Null()); |
| } else { |
| return scope.Escape(maybe_instance.ToLocalChecked()); |
| } |
| } |
| |
| grpc_call_credentials *CallCredentials::GetWrappedCredentials() { |
| return wrapped_credentials; |
| } |
| |
| NAN_METHOD(CallCredentials::New) { |
| if (info.IsConstructCall()) { |
| if (!info[0]->IsExternal()) { |
| return Nan::ThrowTypeError( |
| "CallCredentials can only be created with the provided functions"); |
| } |
| Local<External> ext = info[0].As<External>(); |
| grpc_call_credentials *creds_value = |
| reinterpret_cast<grpc_call_credentials *>(ext->Value()); |
| CallCredentials *credentials = new CallCredentials(creds_value); |
| credentials->Wrap(info.This()); |
| info.GetReturnValue().Set(info.This()); |
| return; |
| } else { |
| // This should never be called directly |
| return Nan::ThrowTypeError( |
| "CallCredentials can only be created with the provided functions"); |
| } |
| } |
| |
| NAN_METHOD(CallCredentials::Compose) { |
| if (!CallCredentials::HasInstance(info.This())) { |
| return Nan::ThrowTypeError( |
| "compose can only be called on CallCredentials objects"); |
| } |
| if (!CallCredentials::HasInstance(info[0])) { |
| return Nan::ThrowTypeError( |
| "compose's first argument must be a CallCredentials object"); |
| } |
| CallCredentials *self = ObjectWrap::Unwrap<CallCredentials>(info.This()); |
| CallCredentials *other = ObjectWrap::Unwrap<CallCredentials>( |
| Nan::To<Object>(info[0]).ToLocalChecked()); |
| grpc_call_credentials *creds = grpc_composite_call_credentials_create( |
| self->wrapped_credentials, other->wrapped_credentials, NULL); |
| info.GetReturnValue().Set(WrapStruct(creds)); |
| } |
| |
| |
| |
| NAN_METHOD(CallCredentials::CreateFromPlugin) { |
| if (!info[0]->IsFunction()) { |
| return Nan::ThrowTypeError( |
| "createFromPlugin's argument must be a function"); |
| } |
| grpc_metadata_credentials_plugin plugin; |
| plugin_state *state = new plugin_state; |
| state->callback = new Nan::Callback(info[0].As<Function>()); |
| plugin.get_metadata = plugin_get_metadata; |
| plugin.destroy = plugin_destroy_state; |
| plugin.state = reinterpret_cast<void*>(state); |
| plugin.type = ""; |
| grpc_call_credentials *creds = grpc_metadata_credentials_create_from_plugin( |
| plugin, NULL); |
| info.GetReturnValue().Set(WrapStruct(creds)); |
| } |
| |
| NAN_METHOD(PluginCallback) { |
| // Arguments: status code, error details, metadata |
| if (!info[0]->IsUint32()) { |
| return Nan::ThrowTypeError( |
| "The callback's first argument must be a status code"); |
| } |
| if (!info[1]->IsString()) { |
| return Nan::ThrowTypeError( |
| "The callback's second argument must be a string"); |
| } |
| if (!info[2]->IsObject()) { |
| return Nan::ThrowTypeError( |
| "The callback's third argument must be an object"); |
| } |
| shared_ptr<Resources> resources(new Resources); |
| grpc_status_code code = static_cast<grpc_status_code>( |
| Nan::To<uint32_t>(info[0]).FromJust()); |
| char *details = *Utf8String(info[1]); |
| grpc_metadata_array array; |
| if (!CreateMetadataArray(Nan::To<Object>(info[2]).ToLocalChecked(), |
| &array, resources)){ |
| return Nan::ThrowError("Failed to parse metadata"); |
| } |
| grpc_credentials_plugin_metadata_cb cb = |
| reinterpret_cast<grpc_credentials_plugin_metadata_cb>( |
| Nan::Get(info.Callee(), |
| Nan::New("cb").ToLocalChecked() |
| ).ToLocalChecked().As<External>()->Value()); |
| void *user_data = |
| Nan::Get(info.Callee(), |
| Nan::New("user_data").ToLocalChecked() |
| ).ToLocalChecked().As<External>()->Value(); |
| cb(user_data, array.metadata, array.count, code, details); |
| } |
| |
| NAUV_WORK_CB(SendPluginCallback) { |
| Nan::HandleScope scope; |
| plugin_callback_data *data = reinterpret_cast<plugin_callback_data*>( |
| async->data); |
| // Attach cb and user_data to plugin_callback so that it can access them later |
| v8::Local<v8::Function> plugin_callback = Nan::GetFunction( |
| Nan::New<v8::FunctionTemplate>(PluginCallback)).ToLocalChecked(); |
| Nan::Set(plugin_callback, Nan::New("cb").ToLocalChecked(), |
| Nan::New<v8::External>(reinterpret_cast<void*>(data->cb))); |
| Nan::Set(plugin_callback, Nan::New("user_data").ToLocalChecked(), |
| Nan::New<v8::External>(data->user_data)); |
| const int argc = 2; |
| v8::Local<v8::Value> argv[argc] = { |
| Nan::New(data->service_url).ToLocalChecked(), |
| plugin_callback |
| }; |
| Nan::Callback *callback = data->state->callback; |
| callback->Call(argc, argv); |
| delete data; |
| uv_unref((uv_handle_t *)async); |
| uv_close((uv_handle_t *)async, (uv_close_cb)free); |
| } |
| |
| void plugin_get_metadata(void *state, grpc_auth_metadata_context context, |
| grpc_credentials_plugin_metadata_cb cb, |
| void *user_data) { |
| uv_async_t *async = static_cast<uv_async_t*>(malloc(sizeof(uv_async_t))); |
| uv_async_init(uv_default_loop(), |
| async, |
| SendPluginCallback); |
| plugin_callback_data *data = new plugin_callback_data; |
| data->state = reinterpret_cast<plugin_state*>(state); |
| data->service_url = context.service_url; |
| data->cb = cb; |
| data->user_data = user_data; |
| async->data = data; |
| /* libuv says that it will coalesce calls to uv_async_send. If there is ever a |
| * problem with a callback not getting called, that is probably the reason */ |
| uv_async_send(async); |
| } |
| |
| void plugin_destroy_state(void *ptr) { |
| plugin_state *state = reinterpret_cast<plugin_state *>(ptr); |
| delete state->callback; |
| } |
| |
| } // namespace node |
| } // namespace grpc |