| // Copyright 2014 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 "extensions/browser/url_request_util.h" |
| |
| #include <string> |
| |
| #include "content/public/browser/resource_request_info.h" |
| #include "content/public/common/browser_side_navigation_policy.h" |
| #include "extensions/browser/extension_navigation_ui_data.h" |
| #include "extensions/browser/extensions_browser_client.h" |
| #include "extensions/browser/guest_view/web_view/web_view_renderer_state.h" |
| #include "extensions/browser/info_map.h" |
| #include "extensions/common/extension.h" |
| #include "extensions/common/manifest_handlers/icons_handler.h" |
| #include "extensions/common/manifest_handlers/web_accessible_resources_info.h" |
| #include "extensions/common/manifest_handlers/webview_info.h" |
| #include "net/url_request/url_request.h" |
| |
| namespace extensions { |
| namespace url_request_util { |
| |
| bool AllowCrossRendererResourceLoad(net::URLRequest* request, |
| bool is_incognito, |
| const Extension* extension, |
| InfoMap* extension_info_map, |
| bool* allowed) { |
| const content::ResourceRequestInfo* info = |
| content::ResourceRequestInfo::ForRequest(request); |
| std::string resource_path = request->url().path(); |
| |
| // PlzNavigate: this logic is performed for main frame requests in |
| // ExtensionNavigationThrottle::WillStartRequest. |
| if (info->GetChildID() != -1 || |
| info->GetResourceType() != content::RESOURCE_TYPE_MAIN_FRAME || |
| !content::IsBrowserSideNavigationEnabled()) { |
| // Extensions with webview: allow loading certain resources by guest |
| // renderers with privileged partition IDs as specified in owner's extension |
| // the manifest file. |
| std::string owner_extension_id; |
| int owner_process_id; |
| WebViewRendererState::GetInstance()->GetOwnerInfo( |
| info->GetChildID(), &owner_process_id, &owner_extension_id); |
| const Extension* owner_extension = |
| extension_info_map->extensions().GetByID(owner_extension_id); |
| std::string partition_id; |
| bool is_guest = WebViewRendererState::GetInstance()->GetPartitionID( |
| info->GetChildID(), &partition_id); |
| |
| if (AllowCrossRendererResourceLoadHelper( |
| is_guest, extension, owner_extension, partition_id, resource_path, |
| info->GetPageTransition(), allowed)) { |
| return true; |
| } |
| } |
| |
| // The following checks require that we have an actual extension object. If we |
| // don't have it, allow the request handling to continue with the rest of the |
| // checks. |
| if (!extension) { |
| *allowed = true; |
| return true; |
| } |
| |
| // Disallow loading of packaged resources for hosted apps. We don't allow |
| // hybrid hosted/packaged apps. The one exception is access to icons, since |
| // some extensions want to be able to do things like create their own |
| // launchers. |
| base::StringPiece resource_root_relative_path = |
| request->url().path_piece().empty() |
| ? base::StringPiece() |
| : request->url().path_piece().substr(1); |
| if (extension->is_hosted_app() && |
| !IconsInfo::GetIcons(extension) |
| .ContainsPath(resource_root_relative_path)) { |
| LOG(ERROR) << "Denying load of " << request->url().spec() << " from " |
| << "hosted app."; |
| *allowed = false; |
| return true; |
| } |
| |
| DCHECK_EQ(extension->url(), request->url().GetWithEmptyPath()); |
| |
| // Extensions with manifest before v2 did not have web_accessible_resource |
| // section, therefore the request needs to be allowed. |
| if (extension->manifest_version() < 2) { |
| *allowed = true; |
| return true; |
| } |
| |
| // Navigating the main frame to an extension URL is allowed, even if not |
| // explicitly listed as web_accessible_resource. |
| if (info->GetResourceType() == content::RESOURCE_TYPE_MAIN_FRAME) { |
| *allowed = true; |
| return true; |
| } else if (info->GetResourceType() == content::RESOURCE_TYPE_SUB_FRAME) { |
| // When navigating in subframe, allow if it is the same origin |
| // as the top-level frame. This can only be the case if the subframe |
| // request is coming from the extension process. |
| if (extension_info_map->process_map().Contains(info->GetChildID())) { |
| *allowed = true; |
| return true; |
| } |
| |
| // Also allow if the file is explicitly listed as a web_accessible_resource. |
| if (WebAccessibleResourcesInfo::IsResourceWebAccessible(extension, |
| resource_path)) { |
| *allowed = true; |
| return true; |
| } |
| } |
| |
| // Since not all subresources are required to be listed in a v2 |
| // manifest, we must allow all subresource loads if there are any web |
| // accessible resources. See http://crbug.com/179127. |
| if (!content::IsResourceTypeFrame(info->GetResourceType()) && |
| WebAccessibleResourcesInfo::HasWebAccessibleResources(extension)) { |
| *allowed = true; |
| return true; |
| } |
| |
| if (!ui::PageTransitionIsWebTriggerable(info->GetPageTransition())) { |
| *allowed = false; |
| return true; |
| } |
| |
| // Couldn't determine if the resource is allowed or not. |
| return false; |
| } |
| |
| bool IsWebViewRequest(net::URLRequest* request) { |
| const content::ResourceRequestInfo* info = |
| content::ResourceRequestInfo::ForRequest(request); |
| // |info| can be NULL sometimes: http://crbug.com/370070. |
| if (!info) |
| return false; |
| if (WebViewRendererState::GetInstance()->IsGuest(info->GetChildID())) |
| return true; |
| |
| // GetChildId() is -1 with PlzNavigate for navigation requests, so also try |
| // the ExtensionNavigationUIData data. |
| ExtensionNavigationUIData* data = |
| ExtensionsBrowserClient::Get()->GetExtensionNavigationUIData(request); |
| return data && data->is_web_view(); |
| } |
| |
| bool AllowCrossRendererResourceLoadHelper(bool is_guest, |
| const Extension* extension, |
| const Extension* owner_extension, |
| const std::string& partition_id, |
| const std::string& resource_path, |
| ui::PageTransition page_transition, |
| bool* allowed) { |
| // |owner_extension == extension| needs to be checked because extension |
| // resources should only be accessible to WebViews owned by that extension. |
| if (is_guest && owner_extension == extension && |
| WebviewInfo::IsResourceWebviewAccessible(extension, partition_id, |
| resource_path)) { |
| *allowed = true; |
| return true; |
| } |
| |
| if (is_guest && !ui::PageTransitionIsWebTriggerable(page_transition)) { |
| *allowed = false; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| } // namespace url_request_util |
| } // namespace extensions |