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1 // Copyright (c) 2006-2008 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_SSL_SSL_BLOCKING_PAGE_H_
6 #define CHROME_BROWSER_SSL_SSL_BLOCKING_PAGE_H_
7 #pragma once
8 
9 #include <string>
10 #include <vector>
11 
12 #include "base/string16.h"
13 #include "chrome/browser/ssl/ssl_error_info.h"
14 #include "content/browser/tab_contents/interstitial_page.h"
15 
16 class DictionaryValue;
17 class SSLCertErrorHandler;
18 
19 // This class is responsible for showing/hiding the interstitial page that is
20 // shown when a certificate error happens.
21 // It deletes itself when the interstitial page is closed.
22 class SSLBlockingPage : public InterstitialPage {
23  public:
24   // An interface that classes that want to interact with the SSLBlockingPage
25   // should implement.
26   class Delegate {
27    public:
28     // Should return the information about the error that causes this blocking
29     // page.
30     virtual SSLErrorInfo GetSSLErrorInfo(SSLCertErrorHandler* handler) = 0;
31 
32     // Notification that the user chose to reject the certificate.
33     virtual void OnDenyCertificate(SSLCertErrorHandler* handler) = 0;
34 
35     // Notification that the user chose to accept the certificate.
36     virtual void OnAllowCertificate(SSLCertErrorHandler* handler) = 0;
37 
38    protected:
~Delegate()39     virtual ~Delegate() {}
40   };
41 
42   // The severity of the certificate error.
43   enum ErrorLevel {
44     ERROR_OVERRIDABLE,  // The interstitial page has a "Proceed anyway" button.
45     ERROR_FATAL,        // The interstitial page doesn't allow the user to
46                         // proceed to the site.
47   };
48 
49   SSLBlockingPage(SSLCertErrorHandler* handler, Delegate* delegate,
50                   ErrorLevel error_level);
51   virtual ~SSLBlockingPage();
52 
53   // A method that sets strings in the specified dictionary from the passed
54   // vector so that they can be used to resource the ssl_roadblock.html/
55   // ssl_error.html files.
56   // Note: there can be up to 5 strings in |extra_info|.
57   static void SetExtraInfo(DictionaryValue* strings,
58                            const std::vector<string16>& extra_info);
59 
60  protected:
61   // InterstitialPage implementation.
62   virtual std::string GetHTMLContents();
63   virtual void CommandReceived(const std::string& command);
64   virtual void UpdateEntry(NavigationEntry* entry);
65   virtual void Proceed();
66   virtual void DontProceed();
67 
68  private:
69   void NotifyDenyCertificate();
70   void NotifyAllowCertificate();
71 
72   // The error we represent.  We will either call CancelRequest() or
73   // ContinueRequest() on this object.
74   scoped_refptr<SSLCertErrorHandler> handler_;
75 
76   // Our delegate.  It provides useful information, like the title and details
77   // about this error.
78   Delegate* delegate_;
79 
80   // A flag to indicate if we've notified |delegate_| of the user's decision.
81   bool delegate_has_been_notified_;
82 
83   // Is the certificate error overridable or fatal?
84   ErrorLevel error_level_;
85 
86   DISALLOW_COPY_AND_ASSIGN(SSLBlockingPage);
87 };
88 
89 #endif  // CHROME_BROWSER_SSL_SSL_BLOCKING_PAGE_H_
90