Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 1 | // Copyright (c) 2012 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 | |
Ben Murdoch | bb1529c | 2013-08-08 10:24:53 +0100 | [diff] [blame^] | 5 | #include "content/renderer/npapi/plugin_channel_host.h" |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 6 | |
| 7 | #include "base/metrics/histogram.h" |
Ben Murdoch | eb525c5 | 2013-07-10 11:40:50 +0100 | [diff] [blame] | 8 | #include "base/time/time.h" |
Torne (Richard Coles) | 868fa2f | 2013-06-11 10:57:03 +0100 | [diff] [blame] | 9 | #include "content/child/child_process.h" |
Ben Murdoch | ca12bfa | 2013-07-23 11:17:05 +0100 | [diff] [blame] | 10 | #include "content/child/npapi/npobject_base.h" |
Torne (Richard Coles) | 868fa2f | 2013-06-11 10:57:03 +0100 | [diff] [blame] | 11 | #include "content/child/plugin_messages.h" |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 12 | |
| 13 | #if defined(OS_POSIX) |
| 14 | #include "ipc/ipc_channel_posix.h" |
| 15 | #endif |
| 16 | |
Torne (Richard Coles) | 7d4cd47 | 2013-06-19 11:58:07 +0100 | [diff] [blame] | 17 | #include "third_party/WebKit/public/web/WebBindings.h" |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 18 | |
| 19 | // TODO(shess): Debugging for http://crbug.com/97285 |
| 20 | // |
| 21 | // The hypothesis at #55 requires that RemoveRoute() be called between |
| 22 | // sending ViewHostMsg_OpenChannelToPlugin to the browser, and calling |
| 23 | // GetPluginChannelHost() on the result. This code detects that case |
| 24 | // and stores the backtrace of the RemoveRoute() in a breakpad key. |
| 25 | // The specific RemoveRoute() is not tracked (there could be multiple, |
| 26 | // and which is the one can't be known until the open completes), but |
| 27 | // the backtrace from any such nested call should be sufficient to |
| 28 | // drive a repro. |
| 29 | #if defined(OS_MACOSX) |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 30 | #include "base/debug/crash_logging.h" |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 31 | #include "base/debug/stack_trace.h" |
Torne (Richard Coles) | c2e0dbd | 2013-05-09 18:35:53 +0100 | [diff] [blame] | 32 | #include "base/strings/sys_string_conversions.h" |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 33 | |
| 34 | namespace { |
| 35 | |
| 36 | // Breakpad key for the RemoveRoute() backtrace. |
| 37 | const char* kRemoveRouteTraceKey = "remove_route_bt"; |
| 38 | |
| 39 | // Breakpad key for the OnChannelError() backtrace. |
| 40 | const char* kChannelErrorTraceKey = "channel_error_bt"; |
| 41 | |
| 42 | // GetRemoveTrackingFlag() exposes this so that |
| 43 | // WebPluginDelegateProxy::Initialize() can do scoped set/reset. When |
| 44 | // true, RemoveRoute() knows WBDP::Initialize() is on the stack, and |
| 45 | // records the backtrace. |
| 46 | bool remove_tracking = false; |
| 47 | |
| 48 | } // namespace |
| 49 | #endif |
| 50 | |
| 51 | namespace content { |
| 52 | |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 53 | #if defined(OS_MACOSX) |
| 54 | // static |
| 55 | bool* PluginChannelHost::GetRemoveTrackingFlag() { |
| 56 | return &remove_tracking; |
| 57 | } |
| 58 | #endif |
| 59 | |
| 60 | // static |
| 61 | PluginChannelHost* PluginChannelHost::GetPluginChannelHost( |
| 62 | const IPC::ChannelHandle& channel_handle, |
| 63 | base::MessageLoopProxy* ipc_message_loop) { |
| 64 | PluginChannelHost* result = |
| 65 | static_cast<PluginChannelHost*>(NPChannelBase::GetChannel( |
| 66 | channel_handle, |
| 67 | IPC::Channel::MODE_CLIENT, |
| 68 | ClassFactory, |
| 69 | ipc_message_loop, |
| 70 | true, |
| 71 | ChildProcess::current()->GetShutDownEvent())); |
| 72 | return result; |
| 73 | } |
| 74 | |
| 75 | PluginChannelHost::PluginChannelHost() : expecting_shutdown_(false) { |
| 76 | } |
| 77 | |
| 78 | PluginChannelHost::~PluginChannelHost() { |
| 79 | } |
| 80 | |
| 81 | bool PluginChannelHost::Init(base::MessageLoopProxy* ipc_message_loop, |
| 82 | bool create_pipe_now, |
| 83 | base::WaitableEvent* shutdown_event) { |
Ben Murdoch | ca12bfa | 2013-07-23 11:17:05 +0100 | [diff] [blame] | 84 | return NPChannelBase::Init(ipc_message_loop, create_pipe_now, shutdown_event); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 85 | } |
| 86 | |
| 87 | int PluginChannelHost::GenerateRouteID() { |
| 88 | int route_id = MSG_ROUTING_NONE; |
| 89 | Send(new PluginMsg_GenerateRouteID(&route_id)); |
| 90 | |
| 91 | return route_id; |
| 92 | } |
| 93 | |
| 94 | void PluginChannelHost::AddRoute(int route_id, |
| 95 | IPC::Listener* listener, |
| 96 | NPObjectBase* npobject) { |
| 97 | NPChannelBase::AddRoute(route_id, listener, npobject); |
| 98 | |
| 99 | if (!npobject) |
| 100 | proxies_[route_id] = listener; |
| 101 | } |
| 102 | |
| 103 | void PluginChannelHost::RemoveRoute(int route_id) { |
| 104 | #if defined(OS_MACOSX) |
| 105 | if (remove_tracking) { |
| 106 | base::debug::StackTrace trace; |
| 107 | size_t count = 0; |
| 108 | const void* const* addresses = trace.Addresses(&count); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 109 | base::debug::SetCrashKeyFromAddresses( |
| 110 | kRemoveRouteTraceKey, addresses, count); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 111 | } |
| 112 | #endif |
| 113 | |
| 114 | proxies_.erase(route_id); |
| 115 | NPChannelBase::RemoveRoute(route_id); |
| 116 | } |
| 117 | |
| 118 | bool PluginChannelHost::OnControlMessageReceived(const IPC::Message& message) { |
| 119 | bool handled = true; |
| 120 | IPC_BEGIN_MESSAGE_MAP(PluginChannelHost, message) |
| 121 | IPC_MESSAGE_HANDLER(PluginHostMsg_SetException, OnSetException) |
| 122 | IPC_MESSAGE_HANDLER(PluginHostMsg_PluginShuttingDown, OnPluginShuttingDown) |
| 123 | IPC_MESSAGE_UNHANDLED(handled = false) |
| 124 | IPC_END_MESSAGE_MAP() |
| 125 | DCHECK(handled); |
| 126 | return handled; |
| 127 | } |
| 128 | |
| 129 | void PluginChannelHost::OnSetException(const std::string& message) { |
| 130 | WebKit::WebBindings::setException(NULL, message.c_str()); |
| 131 | } |
| 132 | |
| 133 | void PluginChannelHost::OnPluginShuttingDown() { |
| 134 | expecting_shutdown_ = true; |
| 135 | } |
| 136 | |
| 137 | bool PluginChannelHost::Send(IPC::Message* msg) { |
| 138 | if (msg->is_sync()) { |
| 139 | base::TimeTicks start_time(base::TimeTicks::Now()); |
| 140 | bool result = NPChannelBase::Send(msg); |
| 141 | UMA_HISTOGRAM_TIMES("Plugin.SyncMessageTime", |
| 142 | base::TimeTicks::Now() - start_time); |
| 143 | return result; |
| 144 | } |
| 145 | return NPChannelBase::Send(msg); |
| 146 | } |
| 147 | |
| 148 | void PluginChannelHost::OnChannelError() { |
| 149 | #if defined(OS_MACOSX) |
| 150 | if (remove_tracking) { |
| 151 | base::debug::StackTrace trace; |
| 152 | size_t count = 0; |
| 153 | const void* const* addresses = trace.Addresses(&count); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 154 | base::debug::SetCrashKeyFromAddresses( |
| 155 | kChannelErrorTraceKey, addresses, count); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 156 | } |
| 157 | #endif |
| 158 | |
| 159 | NPChannelBase::OnChannelError(); |
| 160 | |
| 161 | for (ProxyMap::iterator iter = proxies_.begin(); |
| 162 | iter != proxies_.end(); iter++) { |
| 163 | iter->second->OnChannelError(); |
| 164 | } |
| 165 | |
| 166 | proxies_.clear(); |
| 167 | } |
| 168 | |
| 169 | } // namespace content |