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// Copyright (c) 2011 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/ssl/ssl_add_cert_handler.h"

#include "base/bind.h"
#include "chrome/browser/tab_contents/tab_contents_ssl_helper.h"
#include "chrome/browser/tab_contents/tab_util.h"
#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
#include "content/browser/renderer_host/resource_dispatcher_host.h"
#include "content/browser/renderer_host/resource_dispatcher_host_request_info.h"
#include "content/public/browser/browser_thread.h"
#include "net/base/cert_database.h"
#include "net/base/net_errors.h"
#include "net/base/x509_certificate.h"
#include "net/url_request/url_request.h"

using content::BrowserThread;

SSLAddCertHandler::SSLAddCertHandler(net::URLRequest* request,
                                     net::X509Certificate* cert,
                                     int render_process_host_id,
                                     int render_view_id)
    : cert_(cert),
      render_process_host_id_(render_process_host_id),
      render_view_id_(render_view_id) {
  ResourceDispatcherHostRequestInfo* info =
      ResourceDispatcherHost::InfoForRequest(request);
  network_request_id_ = info->request_id();
  // Stay alive until the process completes and Finished() is called.
  AddRef();
  // Delay adding the certificate until the next mainloop iteration.
  BrowserThread::PostTask(
      BrowserThread::IO, FROM_HERE,
      base::Bind(&SSLAddCertHandler::Run, this));
}

SSLAddCertHandler::~SSLAddCertHandler() {}

void SSLAddCertHandler::Run() {
  int cert_error;
  {
    net::CertDatabase db;
    cert_error = db.CheckUserCert(cert_);
  }
  if (cert_error != net::OK) {
    BrowserThread::PostTask(
      BrowserThread::UI, FROM_HERE,
      base::Bind(
          &SSLAddCertHandler::CallVerifyClientCertificateError, this,
          cert_error));
    Finished(false);
    return;
  }
  // TODO(davidben): Move the existing certificate dialog elsewhere, make
  // AskToAddCert send a message to the RenderViewHostDelegate, and ask when we
  // cannot completely verify the certificate for whatever reason.

  // AskToAddCert();
  Finished(true);
}

#if !defined(OS_MACOSX)
void SSLAddCertHandler::AskToAddCert() {
  // TODO(snej): Someone should add Windows and GTK implementations with UI.
  Finished(true);
}
#endif

void SSLAddCertHandler::Finished(bool add_cert) {
  int cert_error = net::OK;
  if (add_cert) {
    net::CertDatabase db;
    cert_error = db.AddUserCert(cert_);
  }

  BrowserThread::PostTask(
      BrowserThread::UI, FROM_HERE,
      base::Bind(
          &SSLAddCertHandler::CallAddClientCertificate, this,
          add_cert, cert_error));

  Release();
}

void SSLAddCertHandler::CallVerifyClientCertificateError(int cert_error) {
  TabContents* tab = tab_util::GetTabContentsByID(
      render_process_host_id_, render_view_id_);
  if (!tab)
    return;

  TabContentsWrapper* wrapper =
      TabContentsWrapper::GetCurrentWrapperForContents(tab);
  wrapper->ssl_helper()->OnVerifyClientCertificateError(this, cert_error);
}

void SSLAddCertHandler::CallAddClientCertificate(bool add_cert,
                                                 int cert_error) {
  TabContents* tab = tab_util::GetTabContentsByID(
      render_process_host_id_, render_view_id_);
  if (!tab)
    return;

  TabContentsWrapper* wrapper =
      TabContentsWrapper::GetCurrentWrapperForContents(tab);
  if (add_cert) {
    if (cert_error == net::OK) {
      wrapper->ssl_helper()->OnAddClientCertificateSuccess(this);
    } else {
      wrapper->ssl_helper()->OnAddClientCertificateError(this, cert_error);
    }
  }
  wrapper->ssl_helper()->OnAddClientCertificateFinished(this);
}