content/browser/utility_process_host_impl.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_UTILITY_PROCESS_HOST_IMPL_H_
   6 #define CONTENT_BROWSER_UTILITY_PROCESS_HOST_IMPL_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/files/file_path.h"
  14 #include "base/memory/ref_counted.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/memory/weak_ptr.h"
  17 #include "content/public/browser/browser_child_process_host_delegate.h"
  18 #include "content/public/browser/utility_process_host.h"
  19
  20 namespace base {
  21 class SequencedTaskRunner;
  22 class Thread;
  23 }
  24
  25 namespace content {
  26 class BrowserChildProcessHostImpl;
  27
  28 typedef base::Thread* (*UtilityMainThreadFactoryFunction)(
  29     const std::string& id);
  30
  31 class CONTENT_EXPORT UtilityProcessHostImpl
  32     : public NON_EXPORTED_BASE(UtilityProcessHost),
  33       public BrowserChildProcessHostDelegate {
  34  public:
  35   static void RegisterUtilityMainThreadFactory(
  36       UtilityMainThreadFactoryFunction create);
  37
  38   UtilityProcessHostImpl(
  39       const scoped_refptr<UtilityProcessHostClient>& client,
  40       const scoped_refptr<base::SequencedTaskRunner>& client_task_runner);
  41   ~UtilityProcessHostImpl() override;
  42
  43   // UtilityProcessHost implementation:
  44   bool Send(IPC::Message* message) override;
  45   bool StartBatchMode() override;
  46   void EndBatchMode() override;
  47   void SetExposedDir(const base::FilePath& dir) override;
  48   void EnableMDns() override;
  49   void DisableSandbox() override;
  50 #if defined(OS_WIN)
  51   virtual void ElevatePrivileges() override;
  52 #endif
  53   const ChildProcessData& GetData() override;
  54 #if defined(OS_POSIX)
  55   void SetEnv(const base::EnvironmentMap& env) override;
  56 #endif
  57
  58   void set_child_flags(int flags) { child_flags_ = flags; }
  59
  60  private:
  61   // Starts a process if necessary.  Returns true if it succeeded or a process
  62   // has already been started via StartBatchMode().
  63   bool StartProcess();
  64
  65   // BrowserChildProcessHost:
  66   bool OnMessageReceived(const IPC::Message& message) override;
  67   void OnProcessLaunchFailed() override;
  68   void OnProcessCrashed(int exit_code) override;
  69
  70   // A pointer to our client interface, who will be informed of progress.
  71   scoped_refptr<UtilityProcessHostClient> client_;
  72   scoped_refptr<base::SequencedTaskRunner> client_task_runner_;
  73   // True when running in batch mode, i.e., StartBatchMode() has been called
  74   // and the utility process will run until EndBatchMode().
  75   bool is_batch_mode_;
  76
  77   base::FilePath exposed_dir_;
  78
  79   // Whether the utility process needs to perform presandbox initialization
  80   // for mDNS.
  81   bool is_mdns_enabled_;
  82
  83   // Whether to pass switches::kNoSandbox to the child.
  84   bool no_sandbox_;
  85
  86   // Whether to launch the process with elevated privileges.
  87   bool run_elevated_;
  88
  89   // Flags defined in ChildProcessHost with which to start the process.
  90   int child_flags_;
  91
  92   base::EnvironmentMap env_;
  93
  94   bool started_;
  95
  96   scoped_ptr<BrowserChildProcessHostImpl> process_;
  97
  98   // Used in single-process mode instead of process_.
  99   scoped_ptr<base::Thread> in_process_thread_;
 100
 101   DISALLOW_COPY_AND_ASSIGN(UtilityProcessHostImpl);
 102 };
 103
 104 }  // namespace content
 105
 106 #endif  // CONTENT_BROWSER_UTILITY_PROCESS_HOST_IMPL_H_