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