Launches a privileged utility process.

content/browser/child_process_launcher.cc

 // Copyright (c) 2012 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 "content/browser/child_process_launcher.h"
 
 #include <utility>  // For std::pair.
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 53 matching lines @@
           terminate_child_on_shutdown_ = !CommandLine::ForCurrentProcess()->
               HasSwitch(switches::kChildCleanExit);
 #else
           terminate_child_on_shutdown_ = true;
 #endif
   }
 
   void Launch(
 #if defined(OS_WIN)
       SandboxedProcessLauncherDelegate* delegate,
+      bool launch_elevated,
 #elif defined(OS_ANDROID)
       int ipcfd,
 #elif defined(OS_POSIX)
       bool use_zygote,
       const base::EnvironmentMap& environ,
       int ipcfd,
 #endif
       CommandLine* cmd_line,
       int child_process_id,
       Client* client) {
     client_ = client;
 
     CHECK(BrowserThread::GetCurrentThreadIdentifier(&client_thread_id_));
 
 #if defined(OS_ANDROID)
     // We need to close the client end of the IPC channel to reliably detect
     // child termination. We will close this fd after we create the child
     // process which is asynchronous on Android.
     ipcfd_ = ipcfd;
 #endif
     BrowserThread::PostTask(
         BrowserThread::PROCESS_LAUNCHER, FROM_HERE,
         base::Bind(
             &Context::LaunchInternal,
             make_scoped_refptr(this),
             client_thread_id_,
             child_process_id,
 #if defined(OS_WIN)
             delegate,
+            launch_elevated,
 #elif defined(OS_ANDROID)
             ipcfd,
 #elif defined(OS_POSIX)
             use_zygote,
             environ,
             ipcfd,
 #endif
             cmd_line));
   }
 
@@ skipping 63 matching lines @@
     }
   }
 
   static void LaunchInternal(
       // |this_object| is NOT thread safe. Only use it to post a task back.
       scoped_refptr<Context> this_object,
       BrowserThread::ID client_thread_id,
       int child_process_id,
 #if defined(OS_WIN)
       SandboxedProcessLauncherDelegate* delegate,
+      bool launch_elevated,
 #elif defined(OS_ANDROID)
       int ipcfd,
 #elif defined(OS_POSIX)
       bool use_zygote,
       const base::EnvironmentMap& env,
       int ipcfd,
 #endif
       CommandLine* cmd_line) {
     scoped_ptr<CommandLine> cmd_line_deleter(cmd_line);
     base::TimeTicks begin_launch_time = base::TimeTicks::Now();
 
 #if defined(OS_WIN)
-    scoped_ptr<SandboxedProcessLauncherDelegate> delegate_deleter(delegate);
-    base::ProcessHandle handle = StartSandboxedProcess(delegate, cmd_line);
+    base::ProcessHandle handle = base::kNullProcessHandle;
+    if (launch_elevated) {
+      base::LaunchOptions options;
+      options.start_hidden = true;
+      base::LaunchElevatedProcess(*cmd_line, options, &handle);
+    } else {
+      scoped_ptr<SandboxedProcessLauncherDelegate> delegate_deleter(delegate);
+      handle = StartSandboxedProcess(delegate, cmd_line);
+    }
 #elif defined(OS_ANDROID)
     // Android WebView runs in single process, ensure that we never get here
     // when running in single process mode.
     CHECK(!cmd_line->HasSwitch(switches::kSingleProcess));
 
     std::string process_type =
         cmd_line->GetSwitchValueASCII(switches::kProcessType);
     std::vector<FileDescriptorInfo> files_to_register;
     files_to_register.push_back(
         FileDescriptorInfo(kPrimaryIPCChannel,
-                                    base::FileDescriptor(ipcfd, false)));
+                           base::FileDescriptor(ipcfd, false)));
 
     GetContentClient()->browser()->
         GetAdditionalMappedFilesForChildProcess(*cmd_line, child_process_id,
                                                 &files_to_register);
 
     StartChildProcess(cmd_line->argv(), files_to_register,
         base::Bind(&ChildProcessLauncher::Context::OnChildProcessStarted,
                    this_object, client_thread_id, begin_launch_time));
 
 #elif defined(OS_POSIX)
     base::ProcessHandle handle = base::kNullProcessHandle;
     // We need to close the client end of the IPC channel to reliably detect
     // child termination.
     file_util::ScopedFD ipcfd_closer(&ipcfd);
 
     std::string process_type =
         cmd_line->GetSwitchValueASCII(switches::kProcessType);
     std::vector<FileDescriptorInfo> files_to_register;
     files_to_register.push_back(
         FileDescriptorInfo(kPrimaryIPCChannel,
-                                    base::FileDescriptor(ipcfd, false)));
+                           base::FileDescriptor(ipcfd, false)));
 
 #if !defined(OS_MACOSX)
     GetContentClient()->browser()->
         GetAdditionalMappedFilesForChildProcess(*cmd_line, child_process_id,
                                                 &files_to_register);
     if (use_zygote) {
       handle = ZygoteHostImpl::GetInstance()->ForkRequest(cmd_line->argv(),
                                                           files_to_register,
                                                           process_type);
     } else
@@ skipping 81 matching lines @@
 #endif
     starting_ = false;
     process_.set_handle(handle);
     if (!handle)
       LOG(ERROR) << "Failed to launch child process";
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
     zygote_ = zygote;
 #endif
     if (client_) {
-      client_->OnProcessLaunched();
+      if (handle) {
+        client_->OnProcessLaunched();
+      } else {
+        client_->OnProcessLaunchFailed();
+      }
     } else {
       Terminate();
     }
   }
 
   void Terminate() {
     if (!process_.handle())
       return;
 
     if (!terminate_child_on_shutdown_)
@@ skipping 62 matching lines @@
   int ipcfd_;
 #elif defined(OS_POSIX) && !defined(OS_MACOSX)
   bool zygote_;
 #endif
 };
 
 
 ChildProcessLauncher::ChildProcessLauncher(
 #if defined(OS_WIN)
     SandboxedProcessLauncherDelegate* delegate,
+    bool launch_elevated,
 #elif defined(OS_POSIX)
     bool use_zygote,
     const base::EnvironmentMap& environ,
     int ipcfd,
 #endif
     CommandLine* cmd_line,
     int child_process_id,
     Client* client) {
   context_ = new Context();
   context_->Launch(
 #if defined(OS_WIN)
       delegate,
+      launch_elevated,
 #elif defined(OS_ANDROID)
       ipcfd,
 #elif defined(OS_POSIX)
       use_zygote,
       environ,
       ipcfd,
 #endif
       cmd_line,
       child_process_id,
       client);
@@ skipping 61 matching lines @@
           GetHandle(), background));
 }
 
 void ChildProcessLauncher::SetTerminateChildOnShutdown(
   bool terminate_on_shutdown) {
   if (context_.get())
     context_->set_terminate_child_on_shutdown(terminate_on_shutdown);
 }
 
 }  // namespace content