Initial checkin of gRPC to third_party/

third_party/grpc/src/node/ext/channel_credentials.cc

+/*
+ *
+ * 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 "grpc/grpc.h"
+#include "grpc/grpc_security.h"
+#include "grpc/support/log.h"
+#include "channel_credentials.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 *ChannelCredentials::constructor;
+Persistent<FunctionTemplate> ChannelCredentials::fun_tpl;
+
+ChannelCredentials::ChannelCredentials(grpc_channel_credentials *credentials)
+    : wrapped_credentials(credentials) {}
+
+ChannelCredentials::~ChannelCredentials() {
+  grpc_channel_credentials_release(wrapped_credentials);
+}
+
+void ChannelCredentials::Init(Local<Object> exports) {
+  HandleScope scope;
+  Local<FunctionTemplate> tpl = Nan::New<FunctionTemplate>(New);
+  tpl->SetClassName(Nan::New("ChannelCredentials").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("createSsl").ToLocalChecked(),
+           Nan::GetFunction(
+               Nan::New<FunctionTemplate>(CreateSsl)).ToLocalChecked());
+  Nan::Set(ctr, Nan::New("createInsecure").ToLocalChecked(),
+           Nan::GetFunction(
+               Nan::New<FunctionTemplate>(CreateInsecure)).ToLocalChecked());
+  Nan::Set(exports, Nan::New("ChannelCredentials").ToLocalChecked(), ctr);
+  constructor = new Nan::Callback(ctr);
+}
+
+bool ChannelCredentials::HasInstance(Local<Value> val) {
+  HandleScope scope;
+  return Nan::New(fun_tpl)->HasInstance(val);
+}
+
+Local<Value> ChannelCredentials::WrapStruct(
+    grpc_channel_credentials *credentials) {
+  EscapableHandleScope scope;
+  const int argc = 1;
+  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_channel_credentials *ChannelCredentials::GetWrappedCredentials() {
+  return wrapped_credentials;
+}
+
+NAN_METHOD(ChannelCredentials::New) {
+  if (info.IsConstructCall()) {
+    if (!info[0]->IsExternal()) {
+      return Nan::ThrowTypeError(
+          "ChannelCredentials can only be created with the provided functions");
+    }
+    Local<External> ext = info[0].As<External>();
+    grpc_channel_credentials *creds_value =
+        reinterpret_cast<grpc_channel_credentials *>(ext->Value());
+    ChannelCredentials *credentials = new ChannelCredentials(creds_value);
+    credentials->Wrap(info.This());
+    info.GetReturnValue().Set(info.This());
+    return;
+  } else {
+    // This should never be called directly
+    return Nan::ThrowTypeError(
+        "ChannelCredentials can only be created with the provided functions");
+  }
+}
+
+NAN_METHOD(ChannelCredentials::CreateSsl) {
+  char *root_certs = NULL;
+  grpc_ssl_pem_key_cert_pair key_cert_pair = {NULL, NULL};
+  if (::node::Buffer::HasInstance(info[0])) {
+    root_certs = ::node::Buffer::Data(info[0]);
+  } else if (!(info[0]->IsNull() || info[0]->IsUndefined())) {
+    return Nan::ThrowTypeError("createSsl's first argument must be a Buffer");
+  }
+  if (::node::Buffer::HasInstance(info[1])) {
+    key_cert_pair.private_key = ::node::Buffer::Data(info[1]);
+  } else if (!(info[1]->IsNull() || info[1]->IsUndefined())) {
+    return Nan::ThrowTypeError(
+        "createSSl's second argument must be a Buffer if provided");
+  }
+  if (::node::Buffer::HasInstance(info[2])) {
+    key_cert_pair.cert_chain = ::node::Buffer::Data(info[2]);
+  } else if (!(info[2]->IsNull() || info[2]->IsUndefined())) {
+    return Nan::ThrowTypeError(
+        "createSSl's third argument must be a Buffer if provided");
+  }
+  if ((key_cert_pair.private_key == NULL) !=
+      (key_cert_pair.cert_chain == NULL)) {
+    return Nan::ThrowError(
+        "createSsl's second and third arguments must be"
+        " provided or omitted together");
+  }
+  grpc_channel_credentials *creds = grpc_ssl_credentials_create(
+      root_certs, key_cert_pair.private_key == NULL ? NULL : &key_cert_pair,
+      NULL);
+  if (creds == NULL) {
+    info.GetReturnValue().SetNull();
+  } else {
+    info.GetReturnValue().Set(WrapStruct(creds));
+  }
+}
+
+NAN_METHOD(ChannelCredentials::Compose) {
+  if (!ChannelCredentials::HasInstance(info.This())) {
+    return Nan::ThrowTypeError(
+        "compose can only be called on ChannelCredentials objects");
+  }
+  if (!CallCredentials::HasInstance(info[0])) {
+    return Nan::ThrowTypeError(
+        "compose's first argument must be a CallCredentials object");
+  }
+  ChannelCredentials *self = ObjectWrap::Unwrap<ChannelCredentials>(
+      info.This());
+  if (self->wrapped_credentials == NULL) {
+    return Nan::ThrowTypeError(
+        "Cannot compose insecure credential");
+  }
+  CallCredentials *other = ObjectWrap::Unwrap<CallCredentials>(
+      Nan::To<Object>(info[0]).ToLocalChecked());
+  grpc_channel_credentials *creds = grpc_composite_channel_credentials_create(
+      self->wrapped_credentials, other->GetWrappedCredentials(), NULL);
+  if (creds == NULL) {
+    info.GetReturnValue().SetNull();
+  } else {
+    info.GetReturnValue().Set(WrapStruct(creds));
+  }
+}
+
+NAN_METHOD(ChannelCredentials::CreateInsecure) {
+  info.GetReturnValue().Set(WrapStruct(NULL));
+}
+
+}  // namespace node
+}  // namespace grpc