| // Copyright 2015 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/extension_api_frame_id_map.h" |
| |
| #include <tuple> |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/logging.h" |
| #include "base/task/post_task.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "content/public/browser/navigation_entry.h" |
| #include "content/public/browser/navigation_handle.h" |
| #include "content/public/browser/render_frame_host.h" |
| #include "content/public/browser/render_process_host.h" |
| #include "content/public/browser/web_contents.h" |
| #include "content/public/common/child_process_host.h" |
| #include "extensions/browser/extensions_browser_client.h" |
| #include "extensions/common/constants.h" |
| |
| namespace extensions { |
| |
| namespace { |
| |
| // The map is accessed on the IO and UI thread, so construct it once and never |
| // delete it. |
| base::LazyInstance<ExtensionApiFrameIdMap>::Leaky g_map_instance = |
| LAZY_INSTANCE_INITIALIZER; |
| |
| } // namespace |
| |
| const int ExtensionApiFrameIdMap::kInvalidFrameId = -1; |
| const int ExtensionApiFrameIdMap::kTopFrameId = 0; |
| |
| ExtensionApiFrameIdMap::FrameData::FrameData() |
| : frame_id(kInvalidFrameId), |
| parent_frame_id(kInvalidFrameId), |
| tab_id(extension_misc::kUnknownTabId), |
| window_id(extension_misc::kUnknownWindowId) {} |
| |
| ExtensionApiFrameIdMap::FrameData::FrameData( |
| int frame_id, |
| int parent_frame_id, |
| int tab_id, |
| int window_id, |
| GURL last_committed_main_frame_url, |
| base::Optional<GURL> pending_main_frame_url) |
| : frame_id(frame_id), |
| parent_frame_id(parent_frame_id), |
| tab_id(tab_id), |
| window_id(window_id), |
| last_committed_main_frame_url(std::move(last_committed_main_frame_url)), |
| pending_main_frame_url(std::move(pending_main_frame_url)) {} |
| |
| ExtensionApiFrameIdMap::FrameData::~FrameData() = default; |
| |
| ExtensionApiFrameIdMap::FrameData::FrameData( |
| const ExtensionApiFrameIdMap::FrameData& other) = default; |
| ExtensionApiFrameIdMap::FrameData& ExtensionApiFrameIdMap::FrameData::operator=( |
| const ExtensionApiFrameIdMap::FrameData& other) = default; |
| |
| ExtensionApiFrameIdMap::RenderFrameIdKey::RenderFrameIdKey() |
| : render_process_id(content::ChildProcessHost::kInvalidUniqueID), |
| frame_routing_id(MSG_ROUTING_NONE) {} |
| |
| ExtensionApiFrameIdMap::RenderFrameIdKey::RenderFrameIdKey( |
| int render_process_id, |
| int frame_routing_id) |
| : render_process_id(render_process_id), |
| frame_routing_id(frame_routing_id) {} |
| |
| bool ExtensionApiFrameIdMap::RenderFrameIdKey::operator<( |
| const RenderFrameIdKey& other) const { |
| return std::tie(render_process_id, frame_routing_id) < |
| std::tie(other.render_process_id, other.frame_routing_id); |
| } |
| |
| bool ExtensionApiFrameIdMap::RenderFrameIdKey::operator==( |
| const RenderFrameIdKey& other) const { |
| return render_process_id == other.render_process_id && |
| frame_routing_id == other.frame_routing_id; |
| } |
| |
| ExtensionApiFrameIdMap::ExtensionApiFrameIdMap() {} |
| |
| ExtensionApiFrameIdMap::~ExtensionApiFrameIdMap() {} |
| |
| // static |
| ExtensionApiFrameIdMap* ExtensionApiFrameIdMap::Get() { |
| return g_map_instance.Pointer(); |
| } |
| |
| // static |
| int ExtensionApiFrameIdMap::GetFrameId(content::RenderFrameHost* rfh) { |
| if (!rfh) |
| return kInvalidFrameId; |
| if (rfh->GetParent()) |
| return rfh->GetFrameTreeNodeId(); |
| return kTopFrameId; |
| } |
| |
| // static |
| int ExtensionApiFrameIdMap::GetFrameId( |
| content::NavigationHandle* navigation_handle) { |
| return navigation_handle->IsInMainFrame() |
| ? kTopFrameId |
| : navigation_handle->GetFrameTreeNodeId(); |
| } |
| |
| // static |
| int ExtensionApiFrameIdMap::GetParentFrameId(content::RenderFrameHost* rfh) { |
| return rfh ? GetFrameId(rfh->GetParent()) : kInvalidFrameId; |
| } |
| |
| // static |
| int ExtensionApiFrameIdMap::GetParentFrameId( |
| content::NavigationHandle* navigation_handle) { |
| if (navigation_handle->IsInMainFrame()) |
| return kInvalidFrameId; |
| |
| if (navigation_handle->IsParentMainFrame()) |
| return kTopFrameId; |
| |
| return navigation_handle->GetParentFrame()->GetFrameTreeNodeId(); |
| } |
| |
| // static |
| content::RenderFrameHost* ExtensionApiFrameIdMap::GetRenderFrameHostById( |
| content::WebContents* web_contents, |
| int frame_id) { |
| // Although it is technically possible to map |frame_id| to a RenderFrameHost |
| // without WebContents, we choose to not do that because in the extension API |
| // frameIds are only guaranteed to be meaningful in combination with a tabId. |
| if (!web_contents) |
| return nullptr; |
| |
| if (frame_id == kInvalidFrameId) |
| return nullptr; |
| |
| if (frame_id == kTopFrameId) |
| return web_contents->GetMainFrame(); |
| |
| DCHECK_GE(frame_id, 1); |
| |
| // Unfortunately, extension APIs do not know which process to expect for a |
| // given frame ID, so we must use an unsafe API here that could return a |
| // different RenderFrameHost than the caller may have expected (e.g., one that |
| // changed after a cross-process navigation). |
| return web_contents->UnsafeFindFrameByFrameTreeNodeId(frame_id); |
| } |
| |
| ExtensionApiFrameIdMap::FrameData ExtensionApiFrameIdMap::KeyToValue( |
| const RenderFrameIdKey& key, |
| bool require_live_frame) const { |
| content::RenderFrameHost* rfh = content::RenderFrameHost::FromID( |
| key.render_process_id, key.frame_routing_id); |
| |
| if (!rfh || (require_live_frame && !rfh->IsRenderFrameLive())) |
| return FrameData(); |
| |
| content::WebContents* web_contents = |
| content::WebContents::FromRenderFrameHost(rfh); |
| |
| base::Optional<GURL> pending_main_frame_url; |
| // Only set |pending_main_frame_url| if |rfh| is the main frame and a pending |
| // entry exists. |
| if (rfh->GetParent() == nullptr && web_contents && |
| web_contents->GetController().GetPendingEntry()) { |
| pending_main_frame_url = |
| web_contents->GetController().GetPendingEntry()->GetURL(); |
| } |
| |
| // The RenderFrameHost may not have an associated WebContents in cases |
| // such as interstitial pages. |
| GURL last_committed_main_frame_url = |
| web_contents ? web_contents->GetLastCommittedURL() : GURL(); |
| int tab_id = extension_misc::kUnknownTabId; |
| int window_id = extension_misc::kUnknownWindowId; |
| // The browser client can be null in unittests. |
| if (ExtensionsBrowserClient::Get()) { |
| ExtensionsBrowserClient::Get()->GetTabAndWindowIdForWebContents( |
| web_contents, &tab_id, &window_id); |
| } |
| return FrameData(GetFrameId(rfh), GetParentFrameId(rfh), tab_id, window_id, |
| std::move(last_committed_main_frame_url), |
| std::move(pending_main_frame_url)); |
| } |
| |
| ExtensionApiFrameIdMap::FrameData ExtensionApiFrameIdMap::GetFrameData( |
| int render_process_id, |
| int render_frame_id) { |
| DCHECK_CURRENTLY_ON(content::BrowserThread::UI); |
| const RenderFrameIdKey key(render_process_id, render_frame_id); |
| auto frame_id_iter = deleted_frame_data_map_.find(key); |
| if (frame_id_iter != deleted_frame_data_map_.end()) |
| return frame_id_iter->second; |
| |
| return KeyToValue(key, true /* require_live_frame */); |
| } |
| |
| void ExtensionApiFrameIdMap::OnRenderFrameDeleted( |
| content::RenderFrameHost* rfh) { |
| DCHECK_CURRENTLY_ON(content::BrowserThread::UI); |
| DCHECK(rfh); |
| |
| const RenderFrameIdKey key(rfh->GetProcess()->GetID(), rfh->GetRoutingID()); |
| // TODO(http://crbug.com/522129): This is necessary right now because beacon |
| // requests made in window.onunload may start after this has been called. |
| // Delay the RemoveFrameData() call, so we will still have the frame data |
| // cached when the beacon request comes in. |
| deleted_frame_data_map_.insert( |
| {key, KeyToValue(key, false /* require_live_frame */)}); |
| base::SequencedTaskRunnerHandle::Get()->PostTask( |
| FROM_HERE, |
| base::BindOnce( |
| [](ExtensionApiFrameIdMap* self, const RenderFrameIdKey& key) { |
| self->deleted_frame_data_map_.erase(key); |
| }, |
| base::Unretained(this), key)); |
| } |
| |
| } // namespace extensions |