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// 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.

#include "chrome/browser/renderer_host/x509_user_cert_resource_handler.h"

#include "base/string_util.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chrome_thread.h"
#include "chrome/browser/download/download_file.h"
#include "chrome/browser/renderer_host/resource_dispatcher_host.h"
#include "chrome/browser/renderer_host/resource_dispatcher_host_request_info.h"
#include "chrome/browser/ssl/ssl_add_cert_handler.h"
#include "chrome/common/resource_response.h"
#include "chrome/common/url_constants.h"
#include "net/base/io_buffer.h"
#include "net/base/mime_sniffer.h"
#include "net/base/mime_util.h"
#include "net/http/http_response_headers.h"

    ResourceDispatcherHost* host, URLRequest* request)
    : host_(host),
      buffer_(new DownloadBuffer),
      resource_buffer_(NULL) {

bool X509UserCertResourceHandler::OnUploadProgress(int request_id,
                                                   uint64 position,
                                                   uint64 size) {
  return true;

bool X509UserCertResourceHandler::OnRequestRedirected(int request_id,
                                                      const GURL& url,
                                                      ResourceResponse* resp,
                                                      bool* defer) {
  url_ = url;
  return true;

bool X509UserCertResourceHandler::OnResponseStarted(int request_id,
                                                    ResourceResponse* resp) {
  return (resp->response_head.mime_type == "application/x-x509-user-cert");

bool X509UserCertResourceHandler::OnWillStart(int request_id,
                                              const GURL& url,
                                              bool* defer) {
  return true;

bool X509UserCertResourceHandler::OnWillRead(int request_id,
                                             net::IOBuffer** buf,
                                             int* buf_size,
                                             int min_size) {
  // TODO(gauravsh): Should we use 'min_size' here?
  DCHECK(buf && buf_size);
  if (!read_buffer_) {
    read_buffer_ = new net::IOBuffer(kReadBufSize);
  *buf = read_buffer_.get();
  *buf_size = kReadBufSize;

  return true;

bool X509UserCertResourceHandler::OnReadCompleted(int request_id,
                                                  int* bytes_read) {
  if (!*bytes_read)
    return true;

  // We have more data to read.
  content_length_ += *bytes_read;

  // Release the ownership of the buffer, and store a reference
  // to it. A new one will be allocated in OnWillRead().
  net::IOBuffer* buffer = NULL;
  // TODO(gauravsh): Should this be handled by a separate thread?
  buffer_->contents.push_back(std::make_pair(buffer, *bytes_read));

  return true;

bool X509UserCertResourceHandler::OnResponseCompleted(
    int request_id,
    const URLRequestStatus& urs,
    const std::string& sec_info) {
  if (urs.status() != URLRequestStatus::SUCCESS)
    return false;

  // TODO(gauravsh): Verify that 'request_id' was actually a keygen form post
  // and only then import the certificate.
  scoped_refptr<net::X509Certificate> cert =
  // The handler will run the UI and delete itself when it's finished.
  new SSLAddCertHandler(request_, cert);
  return true;

void X509UserCertResourceHandler::OnRequestClosed() {

void X509UserCertResourceHandler::AssembleResource() {
  size_t bytes_copied = 0;
  resource_buffer_ = new net::IOBuffer(content_length_);

  for (size_t i = 0; i < buffer_->contents.size(); ++i) {
    net::IOBuffer* data = buffer_->contents[i].first;
    const int data_len = buffer_->contents[i].second;
    DCHECK(bytes_copied + data_len <= content_length_);
    memcpy(resource_buffer_->data() + bytes_copied, data->data(), data_len);
    bytes_copied += data_len;

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