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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "content/browser/manifest/manifest_manager_host.h" |
| 6 |
| 7 #include "content/common/manifest_manager_messages.h" |
| 8 #include "content/public/browser/render_frame_host.h" |
| 9 #include "content/public/browser/render_process_host.h" |
| 10 #include "content/public/common/manifest.h" |
| 11 #include "content/public/common/result_codes.h" |
| 12 |
| 13 namespace content { |
| 14 |
| 15 namespace { |
| 16 |
| 17 void KillRenderer(RenderFrameHost* render_frame_host) { |
| 18 base::ProcessHandle process_handle = |
| 19 render_frame_host->GetProcess()->GetHandle(); |
| 20 if (process_handle == base::kNullProcessHandle) |
| 21 return; |
| 22 base::KillProcess(process_handle, RESULT_CODE_KILLED_BAD_MESSAGE, false); |
| 23 } |
| 24 |
| 25 } // anonymous namespace |
| 26 |
| 27 ManifestManagerHost::ManifestManagerHost(WebContents* web_contents) |
| 28 : WebContentsObserver(web_contents) { |
| 29 } |
| 30 |
| 31 ManifestManagerHost::~ManifestManagerHost() { |
| 32 } |
| 33 |
| 34 ManifestManagerHost::CallbackMap* ManifestManagerHost::GetCallbackMapForFrame( |
| 35 RenderFrameHost* render_frame_host) { |
| 36 FrameCallbackMap::iterator it = pending_callbacks_.find(render_frame_host); |
| 37 return it != pending_callbacks_.end() ? it->second : 0; |
| 38 } |
| 39 |
| 40 void ManifestManagerHost::RenderFrameDeleted( |
| 41 RenderFrameHost* render_frame_host) { |
| 42 CallbackMap* callbacks = GetCallbackMapForFrame(render_frame_host); |
| 43 if (!callbacks) |
| 44 return; |
| 45 |
| 46 // Before deleting the callbacks, make sure they are called with a failure |
| 47 // state. |
| 48 CallbackMap::const_iterator it(callbacks); |
| 49 for (; !it.IsAtEnd(); it.Advance()) |
| 50 it.GetCurrentValue()->Run(Manifest()); |
| 51 |
| 52 pending_callbacks_.erase(render_frame_host); |
| 53 } |
| 54 |
| 55 void ManifestManagerHost::GetManifest(RenderFrameHost* render_frame_host, |
| 56 const GetManifestCallback& callback) { |
| 57 CallbackMap* callbacks = GetCallbackMapForFrame(render_frame_host); |
| 58 if (!callbacks) { |
| 59 callbacks = new CallbackMap(); |
| 60 pending_callbacks_[render_frame_host] = callbacks; |
| 61 } |
| 62 |
| 63 int request_id = callbacks->Add(new GetManifestCallback(callback)); |
| 64 |
| 65 render_frame_host->Send(new ManifestManagerMsg_RequestManifest( |
| 66 render_frame_host->GetRoutingID(), request_id)); |
| 67 } |
| 68 |
| 69 bool ManifestManagerHost::OnMessageReceived( |
| 70 const IPC::Message& message, RenderFrameHost* render_frame_host) { |
| 71 bool handled = true; |
| 72 |
| 73 IPC_BEGIN_MESSAGE_MAP_WITH_PARAM(ManifestManagerHost, message, |
| 74 render_frame_host) |
| 75 IPC_MESSAGE_HANDLER(ManifestManagerHostMsg_RequestManifestResponse, |
| 76 OnRequestManifestResponse) |
| 77 IPC_MESSAGE_UNHANDLED(handled = false) |
| 78 IPC_END_MESSAGE_MAP() |
| 79 |
| 80 return handled; |
| 81 } |
| 82 |
| 83 void ManifestManagerHost::OnRequestManifestResponse( |
| 84 RenderFrameHost* render_frame_host, |
| 85 int request_id, |
| 86 const Manifest& insecure_manifest) { |
| 87 CallbackMap* callbacks = GetCallbackMapForFrame(render_frame_host); |
| 88 if (!callbacks) { |
| 89 DVLOG(1) << "Unexpected RequestManifestResponse to from renderer. " |
| 90 "Killing renderer."; |
| 91 KillRenderer(render_frame_host); |
| 92 return; |
| 93 } |
| 94 |
| 95 GetManifestCallback* callback = callbacks->Lookup(request_id); |
| 96 if (!callback) { |
| 97 DVLOG(1) << "Received a request_id (" << request_id << ") from renderer " |
| 98 "with no associated callback. Killing renderer."; |
| 99 KillRenderer(render_frame_host); |
| 100 return; |
| 101 } |
| 102 |
| 103 // When receiving a Manifest, the browser process can't trust that it is |
| 104 // coming from a known and secure source. It must be processed accordingly. |
| 105 Manifest manifest = insecure_manifest; |
| 106 manifest.name = base::NullableString16( |
| 107 manifest.name.string().substr(0, Manifest::kMaxIPCStringLength), |
| 108 manifest.name.is_null()); |
| 109 manifest.short_name = base::NullableString16( |
| 110 manifest.short_name.string().substr(0, Manifest::kMaxIPCStringLength), |
| 111 manifest.short_name.is_null()); |
| 112 |
| 113 callback->Run(manifest); |
| 114 callbacks->Remove(request_id); |
| 115 if (callbacks->IsEmpty()) { |
| 116 delete callbacks; |
| 117 pending_callbacks_.erase(render_frame_host); |
| 118 } |
| 119 } |
| 120 |
| 121 } // namespace content |
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