/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsWebBrowserContentPolicy.h"

#include "nsIDocShell.h"

#include "nsCOMPtr.h"

#include "nsContentPolicyUtils.h"

#include "nsIContentViewer.h"

nsWebBrowserContentPolicy::nsWebBrowserContentPolicy()

{

}

nsWebBrowserContentPolicy::~nsWebBrowserContentPolicy()

{

}

NS_IMPL_ISUPPORTS(nsWebBrowserContentPolicy, nsIContentPolicy)

NS_IMETHODIMP

nsWebBrowserContentPolicy::ShouldLoad(nsIURI* aContentLocation,

                                      nsILoadInfo* aLoadInfo,

                                      const nsACString& aMimeGuess,

                                      int16_t* aShouldLoad)

{

  MOZ_ASSERT(aShouldLoad, "Null out param");

  uint32_t contentType = aLoadInfo->GetExternalContentPolicyType();

  MOZ_ASSERT(contentType == nsContentUtils::InternalContentPolicyTypeToExternal(contentType),

             "We should only see external content policy types here.");

  *aShouldLoad = nsIContentPolicy::ACCEPT;

  nsCOMPtr<nsISupports> context = aLoadInfo->GetLoadingContext();

  nsIDocShell* shell = NS_CP_GetDocShellFromContext(context);

  /* We're going to dereference shell, so make sure it isn't null */

  if (!shell) {

    return NS_OK;

  }

  nsresult rv;

  bool allowed = true;

  switch (contentType) {

    case nsIContentPolicy::TYPE_SCRIPT:

      rv = shell->GetAllowJavascript(&allowed);

      break;

    case nsIContentPolicy::TYPE_SUBDOCUMENT:

      rv = shell->GetAllowSubframes(&allowed);

      break;

#if 0

    /* XXXtw: commented out in old code; add during conpol phase 2 */

    case nsIContentPolicy::TYPE_REFRESH:

      rv = shell->GetAllowMetaRedirects(&allowed); /* meta _refresh_ */

      break;

#endif

    case nsIContentPolicy::TYPE_IMAGE:

    case nsIContentPolicy::TYPE_IMAGESET:

      rv = shell->GetAllowImages(&allowed);

      break;

    default:

      return NS_OK;

  }

  if (NS_SUCCEEDED(rv) && !allowed) {

    *aShouldLoad = nsIContentPolicy::REJECT_TYPE;

  }

  return rv;

}

NS_IMETHODIMP

nsWebBrowserContentPolicy::ShouldProcess(nsIURI* aContentLocation,

                                         nsILoadInfo* aLoadInfo,

                                         const nsACString& aMimeGuess,

                                         int16_t* aShouldProcess)

{

  MOZ_ASSERT(aShouldProcess, "Null out param");

  uint32_t contentType = aLoadInfo->GetExternalContentPolicyType();

  MOZ_ASSERT(contentType == nsContentUtils::InternalContentPolicyTypeToExternal(contentType),

             "We should only see external content policy types here.");

  *aShouldProcess = nsIContentPolicy::ACCEPT;

  // Object tags will always open channels with TYPE_OBJECT, but may end up

  // loading with TYPE_IMAGE or TYPE_DOCUMENT as their final type, so we block

  // actual-plugins at the process stage

  if (contentType != nsIContentPolicy::TYPE_OBJECT) {

    return NS_OK;

  }

  nsCOMPtr<nsISupports> context = aLoadInfo->GetLoadingContext();

  nsIDocShell* shell = NS_CP_GetDocShellFromContext(context);

  if (shell && (!shell->PluginsAllowedInCurrentDoc())) {

    *aShouldProcess = nsIContentPolicy::REJECT_TYPE;

  }

  return NS_OK;

}