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1 // Copyright (c) 2011 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 CHROME_BROWSER_IMPORTER_FIREFOX_IMPORTER_UNITTEST_UTILS_H_
6 #define CHROME_BROWSER_IMPORTER_FIREFOX_IMPORTER_UNITTEST_UTILS_H_
7 #pragma once
8 
9 #include "base/basictypes.h"
10 #include "base/memory/scoped_ptr.h"
11 #include "base/process_util.h"
12 #include "chrome/browser/importer/nss_decryptor.h"
13 
14 class FFDecryptorServerChannelListener;
15 namespace IPC {
16   class Channel;
17 }  // namespace IPC
18 class MessageLoopForIO;
19 
20 // On OS X NSSDecryptor needs to run in a separate process. To allow us to use
21 // the same unit test on all platforms we use a proxy class which spawns a
22 // child process to do decryption on OS X, and calls through directly
23 // to NSSDecryptor on other platforms.
24 // On OS X:
25 // 2 IPC messages are sent for every method of NSSDecryptor, one containing the
26 // input arguments sent from Server->Child and one coming back containing
27 // the return argument e.g.
28 //
29 // -> Msg_Decryptor_Init(dll_path, db_path)
30 // <- Msg_Decryptor_InitReturnCode(bool)
31 class FFUnitTestDecryptorProxy {
32  public:
33   FFUnitTestDecryptorProxy();
34   virtual ~FFUnitTestDecryptorProxy();
35 
36   // Initialize a decryptor, returns true if the object was
37   // constructed successfully.
38   bool Setup(const FilePath& nss_path);
39 
40   // This match the parallel functions in NSSDecryptor.
41   bool DecryptorInit(const FilePath& dll_path, const FilePath& db_path);
42   string16 Decrypt(const std::string& crypt);
43 
44  private:
45 #if defined(OS_MACOSX)
46   // Blocks until either a timeout is reached, or until the client process
47   // responds to an IPC message.
48   // Returns true if a reply was received successfully and false if the
49   // the operation timed out.
50   bool WaitForClientResponse();
51 
52   base::ProcessHandle child_process_;
53   scoped_ptr<IPC::Channel> channel_;
54   scoped_ptr<FFDecryptorServerChannelListener> listener_;
55   scoped_ptr<MessageLoopForIO> message_loop_;
56 #else
57   NSSDecryptor decryptor_;
58 #endif  // !OS_MACOSX
59   DISALLOW_COPY_AND_ASSIGN(FFUnitTestDecryptorProxy);
60 };
61 
62 // On Non-OSX platforms FFUnitTestDecryptorProxy simply calls through to
63 // NSSDecryptor.
64 #if !defined(OS_MACOSX)
FFUnitTestDecryptorProxy()65 FFUnitTestDecryptorProxy::FFUnitTestDecryptorProxy() {
66 }
67 
~FFUnitTestDecryptorProxy()68 FFUnitTestDecryptorProxy::~FFUnitTestDecryptorProxy() {
69 }
70 
Setup(const FilePath & nss_path)71 bool FFUnitTestDecryptorProxy::Setup(const FilePath& nss_path) {
72   return true;
73 }
74 
DecryptorInit(const FilePath & dll_path,const FilePath & db_path)75 bool FFUnitTestDecryptorProxy::DecryptorInit(const FilePath& dll_path,
76                                              const FilePath& db_path) {
77   return decryptor_.Init(dll_path, db_path);
78 }
79 
Decrypt(const std::string & crypt)80 string16 FFUnitTestDecryptorProxy::Decrypt(const std::string& crypt) {
81   return decryptor_.Decrypt(crypt);
82 }
83 #endif  // !OS_MACOSX
84 
85 #endif  // CHROME_BROWSER_IMPORTER_FIREFOX_IMPORTER_UNITTEST_UTILS_H_
86