Creating a pexe content handler to translate and run pexes.

services/nacl/pnacl_compile.cc

+// Copyright 2015 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 <fcntl.h>
+
+#include "base/files/file_util.h"
+#include "mojo/nacl/nonsfi/nexe_launcher_nonsfi.h"
+#include "mojo/public/c/system/main.h"
+#include "mojo/public/cpp/application/application_connection.h"
+#include "mojo/public/cpp/application/application_delegate.h"
+#include "mojo/public/cpp/application/application_impl.h"
+#include "mojo/public/cpp/application/application_runner.h"
+#include "mojo/public/cpp/application/interface_factory.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+#include "services/nacl/pnacl_compile.mojom.h"
+#include "url/gurl.h"
+
+namespace mojo {
+namespace nacl {
+
+class PexeCompilerImpl : public PexeCompilerInit {
+ public:
+  void PexeCompilerStart(ScopedMessagePipeHandle handle) override {
+    std::string path = GetBasePath();
+    path.append("pnacl_translation_files/pnacl-llc.nexe");
+    int nexe_fd = open(path.c_str(), O_RDONLY);
+    if (nexe_fd < 0)
+      LOG(FATAL) << "Could not open compiler nexe: " << path;
+    ::nacl::MojoLaunchNexeNonsfi(nexe_fd,
+                                 handle.release().value(),
+                                 true /* enable_translate_irt */);
+  }
+ private:
+  virtual std::string GetBasePath() { return ""; }
+};
+
+class StrongBindingPexeCompilerImpl : public PexeCompilerImpl {
+ public:
+  explicit StrongBindingPexeCompilerImpl(InterfaceRequest<PexeCompilerInit>
+                                         request, std::string& base_path)
+      : base_path_(base_path), strong_binding_(this, request.Pass()) {}
+
+ private:
+  std::string GetBasePath() override { return base_path_; }
+  std::string base_path_;
+  StrongBinding<PexeCompilerInit> strong_binding_;
+};
+
+class MultiPexeCompiler : public ApplicationDelegate,
+                          public InterfaceFactory<PexeCompilerInit> {
+ public:
+  MultiPexeCompiler() {}
+
+  // From ApplicationDelegate
+  void Initialize(ApplicationImpl* app) override {
+    std::string app_path = GURL(app->url()).GetContent();
+    base_path = app_path.substr(0, app_path.find_last_of("/") + 1);
+  }
+
+  // From ApplicationDelegate
+  bool ConfigureIncomingConnection(ApplicationConnection* connection) override {
+    connection->AddService<PexeCompilerInit>(this);
+    return true;
+  }
+
+  // From InterfaceFactory
+  void Create(ApplicationConnection* connection,
+              InterfaceRequest<PexeCompilerInit> request) override {
+    new StrongBindingPexeCompilerImpl(request.Pass(), base_path);
+  }
+
+  std::string base_path;
+};
+
+}  // namespace nacl
+}  // namespace mojo
+
+MojoResult MojoMain(MojoHandle application_request) {
+  mojo::ApplicationRunner runner(new mojo::nacl::MultiPexeCompiler());
+  return runner.Run(application_request);
+}