content/browser/loader/certificate_resource_handler.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_LOADER_CERTIFICATE_RESOURCE_HANDLER_H_
   6 #define CONTENT_BROWSER_LOADER_CERTIFICATE_RESOURCE_HANDLER_H_
   7
   8 #include <string>
   9 #include <utility>
  10 #include <vector>
  11
  12 #include "base/compiler_specific.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "content/browser/loader/resource_handler.h"
  16 #include "net/base/mime_util.h"
  17 #include "url/gurl.h"
  18
  19 namespace net {
  20 class IOBuffer;
  21 class URLRequest;
  22 class URLRequestStatus;
  23 }  // namespace net
  24
  25 namespace content {
  26
  27 // This class handles certificate mime types such as:
  28 // - "application/x-x509-user-cert"
  29 // - "application/x-x509-ca-cert"
  30 // - "application/x-pkcs12"
  31 //
  32 class CertificateResourceHandler : public ResourceHandler {
  33  public:
  34   explicit CertificateResourceHandler(net::URLRequest* request);
  35   virtual ~CertificateResourceHandler();
  36
  37   virtual bool OnUploadProgress(uint64 position, uint64 size) OVERRIDE;
  38
  39   // Not needed, as this event handler ought to be the final resource.
  40   virtual bool OnRequestRedirected(const GURL& url,
  41                                    ResourceResponse* resp,
  42                                    bool* defer) OVERRIDE;
  43
  44   // Check if this indeed an X509 cert.
  45   virtual bool OnResponseStarted(ResourceResponse* resp,
  46                                  bool* defer) OVERRIDE;
  47
  48   // Pass-through implementation.
  49   virtual bool OnWillStart(const GURL& url, bool* defer) OVERRIDE;
  50
  51   // Pass-through implementation.
  52   virtual bool OnBeforeNetworkStart(const GURL& url, bool* defer) OVERRIDE;
  53
  54   // Create a new buffer to store received data.
  55   virtual bool OnWillRead(scoped_refptr<net::IOBuffer>* buf,
  56                           int* buf_size,
  57                           int min_size) OVERRIDE;
  58
  59   // A read was completed, maybe allocate a new buffer for further data.
  60   virtual bool OnReadCompleted(int bytes_read, bool* defer) OVERRIDE;
  61
  62   // Done downloading the certificate.
  63   virtual void OnResponseCompleted(const net::URLRequestStatus& urs,
  64                                    const std::string& sec_info,
  65                                    bool* defer) OVERRIDE;
  66
  67   // N/A to cert downloading.
  68   virtual void OnDataDownloaded(int bytes_downloaded) OVERRIDE;
  69
  70  private:
  71   typedef std::vector<std::pair<scoped_refptr<net::IOBuffer>,
  72                                 size_t> > ContentVector;
  73
  74   void AssembleResource();
  75
  76   GURL url_;
  77   size_t content_length_;
  78   ContentVector buffer_;
  79   scoped_refptr<net::IOBuffer> read_buffer_;
  80   scoped_refptr<net::IOBuffer> resource_buffer_;  // Downloaded certificate.
  81   net::CertificateMimeType cert_type_;
  82   DISALLOW_COPY_AND_ASSIGN(CertificateResourceHandler);
  83 };
  84
  85 }  // namespace content
  86
  87 #endif  // CONTENT_BROWSER_LOADER_CERTIFICATE_RESOURCE_HANDLER_H_