1 // Copyright 2013 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 #include "chrome/browser/ui/crypto_module_delegate_nss.h"
6
7 #include "base/basictypes.h"
8 #include "base/bind.h"
9 #include "chrome/browser/net/nss_context.h"
10 #include "content/public/browser/browser_thread.h"
11
12 using content::BrowserThread;
13
ChromeNSSCryptoModuleDelegate(chrome::CryptoModulePasswordReason reason,const std::string & server)14 ChromeNSSCryptoModuleDelegate::ChromeNSSCryptoModuleDelegate(
15 chrome::CryptoModulePasswordReason reason,
16 const std::string& server)
17 : reason_(reason),
18 server_(server),
19 event_(false, false),
20 cancelled_(false) {}
21
~ChromeNSSCryptoModuleDelegate()22 ChromeNSSCryptoModuleDelegate::~ChromeNSSCryptoModuleDelegate() {}
23
InitializeSlot(content::ResourceContext * context,const base::Closure & initialization_complete_callback)24 bool ChromeNSSCryptoModuleDelegate::InitializeSlot(
25 content::ResourceContext* context,
26 const base::Closure& initialization_complete_callback) {
27 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
28 base::Callback<void(crypto::ScopedPK11Slot)> get_slot_callback;
29 if (!initialization_complete_callback.is_null())
30 get_slot_callback = base::Bind(&ChromeNSSCryptoModuleDelegate::DidGetSlot,
31 // Caller is responsible for keeping |this|
32 // alive until the callback is run.
33 base::Unretained(this),
34 initialization_complete_callback);
35
36 slot_ = GetPrivateNSSKeySlotForResourceContext(context, get_slot_callback);
37 return slot_.get() != NULL;
38 }
39
40 // TODO(mattm): allow choosing which slot to generate and store the key.
RequestSlot()41 crypto::ScopedPK11Slot ChromeNSSCryptoModuleDelegate::RequestSlot() {
42 return slot_.Pass();
43 }
44
RequestPassword(const std::string & slot_name,bool retry,bool * cancelled)45 std::string ChromeNSSCryptoModuleDelegate::RequestPassword(
46 const std::string& slot_name,
47 bool retry,
48 bool* cancelled) {
49 DCHECK(!event_.IsSignaled());
50 event_.Reset();
51
52 if (BrowserThread::PostTask(
53 BrowserThread::UI,
54 FROM_HERE,
55 base::Bind(&ChromeNSSCryptoModuleDelegate::ShowDialog,
56 // This method blocks on |event_| until the task completes,
57 // so there's no need to ref-count.
58 base::Unretained(this),
59 slot_name,
60 retry))) {
61 event_.Wait();
62 }
63 *cancelled = cancelled_;
64 return password_;
65 }
66
ShowDialog(const std::string & slot_name,bool retry)67 void ChromeNSSCryptoModuleDelegate::ShowDialog(const std::string& slot_name,
68 bool retry) {
69 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
70 ShowCryptoModulePasswordDialog(
71 slot_name,
72 retry,
73 reason_,
74 server_,
75 NULL, // TODO(mattm): Supply parent window.
76 base::Bind(&ChromeNSSCryptoModuleDelegate::GotPassword,
77 // RequestPassword is blocked on |event_| until GotPassword is
78 // called, so there's no need to ref-count.
79 base::Unretained(this)));
80 }
81
GotPassword(const std::string & password)82 void ChromeNSSCryptoModuleDelegate::GotPassword(const std::string& password) {
83 if (!password.empty())
84 password_ = password;
85 else
86 cancelled_ = true;
87 event_.Signal();
88 }
89
DidGetSlot(const base::Closure & callback,crypto::ScopedPK11Slot slot)90 void ChromeNSSCryptoModuleDelegate::DidGetSlot(const base::Closure& callback,
91 crypto::ScopedPK11Slot slot) {
92 slot_ = slot.Pass();
93 callback.Run();
94 }
95
96 crypto::CryptoModuleBlockingPasswordDelegate*
CreateCryptoModuleBlockingPasswordDelegate(chrome::CryptoModulePasswordReason reason,const std::string & server)97 CreateCryptoModuleBlockingPasswordDelegate(
98 chrome::CryptoModulePasswordReason reason,
99 const std::string& server) {
100 // Returns a ChromeNSSCryptoModuleDelegate without calling InitializeSlot.
101 // Since it is only being used as a CreateCryptoModuleBlockingDialogDelegate,
102 // initializing the slot handle is unnecessary.
103 return new ChromeNSSCryptoModuleDelegate(reason, server);
104 }
105