Adds support for the <keygen> tag for client certificate enrollment under Lin...

chrome/browser/renderer_host/x509_user_cert_resource_handler.h

+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_RENDERER_HOST_X509_USER_CERT_RESOURCE_HANDLER_H_
+#define CHROME_BROWSER_RENDERER_HOST_X509_USER_CERT_RESOURCE_HANDLER_H_
+
+#include <string>
+
+#include "chrome/browser/renderer_host/resource_dispatcher_host.h"
+#include "chrome/browser/renderer_host/resource_handler.h"
+#include "chrome/browser/download/download_file.h"
+
+// This class handles the "application/x-x509-user-cert" mime-type
+// which is a certificate generated by a CA after a previous
+// <keygen> form post.
+
+class X509UserCertResourceHandler : public ResourceHandler {
+ public:
+  X509UserCertResourceHandler(ResourceDispatcherHost* host,
+                              URLRequest *request);
+
+  // Not needed, as this event handler ought to be the final resource.
+  bool OnRequestRedirected(int request_id, const GURL& url,
+                           ResourceResponse* resp, bool* defer);
+
+  // Check if this indeed an X509 cert.
+  bool OnResponseStarted(int request_id, ResourceResponse* resp);
+
+  // Create a new buffer to store received data.
+  bool OnWillRead(int request_id, net::IOBuffer** buf, int* buf_size,
+                  int min_size);
+
+  // A read was completed, maybe allocate a new buffer for further data.
+  bool OnReadCompleted(int request_id, int* bytes_read);
+
+  // Done downloading the certificate.
+  bool OnResponseCompleted(int request_id,
+                           const URLRequestStatus& urs,
+                           const std::string& sec_info);
+
+
+ private:
+  void AssembleResource();
+
+  GURL url_;
+  ResourceDispatcherHost* host_;
+  URLRequest* request_;
+  size_t content_length_;
+  scoped_ptr<DownloadBuffer> buffer_;
+  scoped_refptr<net::IOBuffer> read_buffer_;
+  scoped_refptr<net::IOBuffer> resource_buffer_;  // Downloaded certificate.
+  static const int kReadBufSize = 32768;
+
+  DISALLOW_COPY_AND_ASSIGN(X509UserCertResourceHandler);
+};
+
+#endif  // CHROME_BROWSER_RENDERER_HOST_X509_USER_CERT__RESOURCE_HANDLER_H_