chrome/browser/ui/crypto_module_delegate_nss.h

   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 #ifndef CHROME_BROWSER_UI_CRYPTO_MODULE_DELEGATE_NSS_H_
   6 #define CHROME_BROWSER_UI_CRYPTO_MODULE_DELEGATE_NSS_H_
   7
   8 #include <string>
   9
  10 #include "base/compiler_specific.h"
  11 #include "base/synchronization/waitable_event.h"
  12 #include "chrome/browser/ui/crypto_module_password_dialog.h"
  13 #include "crypto/nss_crypto_module_delegate.h"
  14 #include "net/base/host_port_pair.h"
  15
  16 namespace content {
  17 class ResourceContext;
  18 }
  19
  20 // Delegate to handle unlocking a slot or indicating which slot to store a key
  21 // in. When passing to NSS functions which take a wincx argument, use the value
  22 // returned from the wincx() method.
  23 class ChromeNSSCryptoModuleDelegate
  24     : public crypto::NSSCryptoModuleDelegate {
  25  public:
  26   // Create a ChromeNSSCryptoModuleDelegate. |reason| is used to select what
  27   // string to show the user, |server| is displayed to indicate which connection
  28   // is causing the dialog to appear. |slot| can be NULL.
  29   ChromeNSSCryptoModuleDelegate(chrome::CryptoModulePasswordReason reason,
  30                                 const net::HostPortPair& server,
  31                                 crypto::ScopedPK11Slot slot);
  32
  33   ~ChromeNSSCryptoModuleDelegate() override;
  34
  35   // Must be called on IO thread. Creates a delegate and returns it
  36   // synchronously or asynchronously to |callback|. If the delegate could not be
  37   // created, |callback| is called with NULL.
  38   static void CreateForResourceContext(
  39       chrome::CryptoModulePasswordReason reason,
  40       const net::HostPortPair& server,
  41       content::ResourceContext* context,
  42       const base::Callback<void(scoped_ptr<ChromeNSSCryptoModuleDelegate>)>&
  43           callback);
  44
  45   // crypto::NSSCryptoModuleDelegate implementation.
  46   crypto::ScopedPK11Slot RequestSlot() override;
  47
  48   // crypto::CryptoModuleBlockingPasswordDelegate implementation.
  49   std::string RequestPassword(const std::string& slot_name,
  50                               bool retry,
  51                               bool* cancelled) override;
  52
  53  private:
  54   void ShowDialog(const std::string& slot_name, bool retry);
  55
  56   void GotPassword(const std::string& password);
  57
  58   // Parameters displayed in the dialog.
  59   const chrome::CryptoModulePasswordReason reason_;
  60   net::HostPortPair server_;
  61
  62   // Event to block worker thread while waiting for dialog on UI thread.
  63   base::WaitableEvent event_;
  64
  65   // Stores the results from the dialog for access on worker thread.
  66   std::string password_;
  67   bool cancelled_;
  68
  69   // The slot which will be returned by RequestSlot.
  70   crypto::ScopedPK11Slot slot_;
  71
  72   DISALLOW_COPY_AND_ASSIGN(ChromeNSSCryptoModuleDelegate);
  73 };
  74
  75 // Create a delegate which only handles unlocking slots.
  76 crypto::CryptoModuleBlockingPasswordDelegate*
  77     CreateCryptoModuleBlockingPasswordDelegate(
  78         chrome::CryptoModulePasswordReason reason,
  79         const net::HostPortPair& server);
  80
  81 #endif  // CHROME_BROWSER_UI_CRYPTO_MODULE_DELEGATE_NSS_H_