| // 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 "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/process_map.h" |
| #include "extensions/common/extension.h" |
| #include "extensions/common/extension_set.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" |
| |
| namespace extensions { |
| namespace url_request_util { |
| |
| bool AllowCrossRendererResourceLoad(const GURL& url, |
| content::ResourceType resource_type, |
| ui::PageTransition page_transition, |
| int child_id, |
| bool is_incognito, |
| const Extension* extension, |
| const ExtensionSet& extensions, |
| const ProcessMap& process_map, |
| bool* allowed) { |
| base::StringPiece resource_path = url.path_piece(); |
| |
| // This logic is performed for main frame requests in |
| // ExtensionNavigationThrottle::WillStartRequest. |
| if (child_id != -1 || resource_type != content::ResourceType::kMainFrame) { |
| // 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( |
| child_id, &owner_process_id, &owner_extension_id); |
| const Extension* owner_extension = extensions.GetByID(owner_extension_id); |
| std::string partition_id; |
| bool is_guest = WebViewRendererState::GetInstance()->GetPartitionID( |
| child_id, &partition_id); |
| |
| if (AllowCrossRendererResourceLoadHelper( |
| is_guest, extension, owner_extension, partition_id, resource_path, |
| page_transition, 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 = |
| url.path_piece().empty() ? base::StringPiece() |
| : url.path_piece().substr(1); |
| if (extension->is_hosted_app() && |
| !IconsInfo::GetIcons(extension) |
| .ContainsPath(resource_root_relative_path)) { |
| LOG(ERROR) << "Denying load of " << url.spec() << " from hosted app."; |
| *allowed = false; |
| return true; |
| } |
| |
| DCHECK_EQ(extension->url(), url.GetWithEmptyPath()); |
| |
| // Navigating the main frame to an extension URL is allowed, even if not |
| // explicitly listed as web_accessible_resource. |
| if (resource_type == content::ResourceType::kMainFrame) { |
| *allowed = true; |
| return true; |
| } else if (resource_type == content::ResourceType::kSubFrame) { |
| // 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 (process_map.Contains(child_id)) { |
| *allowed = true; |
| return true; |
| } |
| |
| // Also allow if the file is explicitly listed as a web_accessible_resource. |
| if (WebAccessibleResourcesInfo::IsResourceWebAccessible( |
| extension, resource_path.as_string())) { |
| *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(resource_type) && |
| WebAccessibleResourcesInfo::HasWebAccessibleResources(extension)) { |
| *allowed = true; |
| return true; |
| } |
| |
| if (!ui::PageTransitionIsWebTriggerable(page_transition)) { |
| *allowed = false; |
| return true; |
| } |
| |
| // Couldn't determine if the resource is allowed or not. |
| return false; |
| } |
| |
| bool AllowCrossRendererResourceLoadHelper(bool is_guest, |
| const Extension* extension, |
| const Extension* owner_extension, |
| const std::string& partition_id, |
| base::StringPiece resource_path, |
| ui::PageTransition page_transition, |
| bool* allowed) { |
| if (is_guest) { |
| if (AllowSpecialCaseExtensionURLInGuest(extension, resource_path)) { |
| *allowed = true; |
| return true; |
| } |
| |
| // An extension's resources should only be accessible to WebViews owned by |
| // that extension. |
| if (owner_extension != extension) { |
| *allowed = false; |
| return true; |
| } |
| |
| *allowed = WebviewInfo::IsResourceWebviewAccessible( |
| extension, partition_id, resource_path.as_string()); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| bool AllowSpecialCaseExtensionURLInGuest( |
| const Extension* extension, |
| base::Optional<base::StringPiece> resource_path) { |
| // Allow mobile setup web UI (chrome://mobilesetup) to embed resources from |
| // the component mobile activation extension in a webview. This is needed |
| // because the activation web UI relies on the activation extension to |
| // provide parts of its UI, and to redirect POST requests to the network |
| // payment URL during mobile device initialization. |
| // |
| // TODO(http://crbug.com/778021): Fix mobile activation UI not to require |
| // this workaround. |
| bool is_mobile_activation_extension = |
| extension && extension->id() == "iadeocfgjdjdmpenejdbfeaocpbikmab"; |
| if (is_mobile_activation_extension) { |
| if (!resource_path.has_value()) |
| return true; |
| if (resource_path.value() == "/activation.html" || |
| resource_path.value() == "/portal_offline.html" || |
| resource_path.value() == "/invalid_device_info.html") { |
| return true; |
| } |
| } |
| |
| // Otherwise this isn't a special case, and the normal logic should apply. |
| return false; |
| } |
| |
| } // namespace url_request_util |
| } // namespace extensions |