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| 1 // Copyright 2016 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 "remoting/host/security_key/remote_security_key_ipc_client.h" | |
| 6 | |
| 7 #include <string> | |
| 8 | |
| 9 #include "base/bind.h" | |
| 10 #include "base/callback.h" | |
| 11 #include "base/callback_helpers.h" | |
| 12 #include "base/threading/thread_task_runner_handle.h" | |
| 13 #include "ipc/ipc_channel.h" | |
| 14 #include "ipc/ipc_listener.h" | |
| 15 #include "ipc/ipc_message.h" | |
| 16 #include "ipc/ipc_message_macros.h" | |
| 17 #include "remoting/host/chromoting_messages.h" | |
| 18 #include "remoting/host/ipc_constants.h" | |
| 19 #include "remoting/host/security_key/remote_security_key_ipc_constants.h" | |
| 20 | |
| 21 namespace remoting { | |
| 22 | |
| 23 RemoteSecurityKeyIpcClient::RemoteSecurityKeyIpcClient() | |
| 24 : initial_ipc_channel_name_(remoting::GetRemoteSecurityKeyIpcChannelName()), | |
| 25 weak_factory_(this) {} | |
| 26 | |
| 27 RemoteSecurityKeyIpcClient::~RemoteSecurityKeyIpcClient() {} | |
| 28 | |
| 29 bool RemoteSecurityKeyIpcClient::WaitForSecurityKeyIpcServerChannel() { | |
| 30 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 31 | |
| 32 // The retry loop is needed as the IPC Servers we connect to are reset (torn | |
| 33 // down and recreated) and we should be resilient in that case. We need to | |
| 34 // strike a balance between resilience and speed as we do not want to add | |
| 35 // un-necessary delay to the local scenario when no session is active. | |
| 36 // 500ms was chosen as a reasonable balance between reliability of remote | |
| 37 // session detection and overhead added to the local security key operation | |
| 38 // when no remote session is present. | |
| 39 const base::TimeDelta kTotalWaitTime = base::TimeDelta::FromMilliseconds(500); | |
| 40 const base::TimeDelta kPerIterationWaitTime = | |
| 41 base::TimeDelta::FromMilliseconds(10); | |
| 42 const int kLoopIterations = kTotalWaitTime / kPerIterationWaitTime; | |
| 43 for (int i = 0; i < kLoopIterations; i++) { | |
| 44 if (IPC::Channel::IsNamedServerInitialized(initial_ipc_channel_name_)) { | |
| 45 return true; | |
| 46 } | |
| 47 | |
| 48 base::PlatformThread::Sleep(kPerIterationWaitTime); | |
| 49 } | |
| 50 | |
| 51 return false; | |
| 52 } | |
| 53 | |
| 54 void RemoteSecurityKeyIpcClient::EstablishIpcConnection( | |
| 55 const base::Closure& connection_ready_callback, | |
| 56 const base::Closure& connection_error_callback) { | |
| 57 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 58 DCHECK(!connection_ready_callback.is_null()); | |
| 59 DCHECK(!connection_error_callback.is_null()); | |
| 60 DCHECK(!ipc_channel_); | |
| 61 | |
| 62 connection_ready_callback_ = connection_ready_callback; | |
| 63 connection_error_callback_ = connection_error_callback; | |
| 64 | |
| 65 ConnectToIpcChannel(initial_ipc_channel_name_); | |
| 66 } | |
| 67 | |
| 68 bool RemoteSecurityKeyIpcClient::SendSecurityKeyRequest( | |
| 69 const std::string& request_payload, | |
| 70 const ResponseCallback& response_callback) { | |
| 71 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 72 DCHECK(!request_payload.empty()); | |
| 73 DCHECK(!response_callback.is_null()); | |
| 74 | |
| 75 if (!ipc_channel_) { | |
| 76 LOG(ERROR) << "Request made before IPC connection was established."; | |
| 77 return false; | |
| 78 } | |
| 79 | |
| 80 if (!response_callback_.is_null()) { | |
| 81 LOG(ERROR) | |
| 82 << "Request made while waiting for a response to a previous request."; | |
| 83 return false; | |
| 84 } | |
| 85 | |
| 86 response_callback_ = response_callback; | |
| 87 return ipc_channel_->Send( | |
| 88 new ChromotingRemoteSecurityKeyToNetworkMsg_Request(request_payload)); | |
| 89 } | |
| 90 | |
| 91 void RemoteSecurityKeyIpcClient::CloseIpcConnection() { | |
| 92 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 93 ipc_channel_.reset(); | |
| 94 } | |
| 95 | |
| 96 void RemoteSecurityKeyIpcClient::SetInitialIpcChannelNameForTest( | |
| 97 const std::string& initial_ipc_channel_name) { | |
| 98 initial_ipc_channel_name_ = initial_ipc_channel_name; | |
| 99 } | |
| 100 | |
| 101 void RemoteSecurityKeyIpcClient::SetExpectedIpcServerSessionIdForTest( | |
| 102 uint32_t expected_session_id) { | |
| 103 expected_ipc_server_session_id_ = expected_session_id; | |
| 104 } | |
| 105 | |
| 106 bool RemoteSecurityKeyIpcClient::OnMessageReceived( | |
| 107 const IPC::Message& message) { | |
| 108 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 109 | |
| 110 bool handled = true; | |
| 111 IPC_BEGIN_MESSAGE_MAP(RemoteSecurityKeyIpcClient, message) | |
| 112 IPC_MESSAGE_HANDLER( | |
| 113 ChromotingNetworkToRemoteSecurityKeyMsg_ConnectionDetails, | |
| 114 OnConnectionDetails) | |
| 115 IPC_MESSAGE_HANDLER(ChromotingNetworkToRemoteSecurityKeyMsg_Response, | |
| 116 OnSecurityKeyResponse) | |
| 117 IPC_MESSAGE_UNHANDLED(handled = false) | |
| 118 IPC_END_MESSAGE_MAP() | |
| 119 | |
| 120 CHECK(handled) << "Received unexpected IPC type: " << message.type(); | |
| 121 return handled; | |
| 122 } | |
| 123 | |
| 124 void RemoteSecurityKeyIpcClient::OnChannelConnected(int32_t peer_pid) { | |
| 125 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 126 | |
| 127 #if defined(OS_WIN) | |
| 128 DWORD peer_session_id; | |
| 129 if (!ProcessIdToSessionId(peer_pid, &peer_session_id)) { | |
| 130 uint32_t last_error = GetLastError(); | |
| 131 LOG(ERROR) << "ProcessIdToSessionId failed with error code: " << last_error; | |
| 132 base::ResetAndReturn(&connection_error_callback_).Run(); | |
| 133 return; | |
| 134 } | |
| 135 | |
| 136 if (peer_session_id != expected_ipc_server_session_id_) { | |
| 137 LOG(ERROR) | |
| 138 << "Cannot establish connection with IPC server running in session: " | |
| 139 << peer_session_id; | |
| 140 base::ResetAndReturn(&connection_error_callback_).Run(); | |
| 141 return; | |
| 142 } | |
| 143 #endif // defined(OS_WIN) | |
| 144 | |
| 145 // If we have received the connection details already (i.e. | |
| 146 // |ipc_channel_name_| is populated) then we signal that the connection is | |
| 147 // ready for use. Otherwise this is the initial connection and we will wait | |
| 148 // to receive the ConnectionDetails message before proceeding. | |
| 149 if (!ipc_channel_name_.empty()) { | |
| 150 base::ResetAndReturn(&connection_ready_callback_).Run(); | |
| 151 } | |
| 152 } | |
| 153 | |
| 154 void RemoteSecurityKeyIpcClient::OnChannelError() { | |
| 155 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 156 | |
| 157 if (!connection_error_callback_.is_null()) { | |
| 158 base::ResetAndReturn(&connection_error_callback_).Run(); | |
| 159 } | |
| 160 } | |
| 161 | |
| 162 void RemoteSecurityKeyIpcClient::OnConnectionDetails( | |
| 163 const std::string& channel_name) { | |
| 164 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 165 ipc_channel_name_ = channel_name; | |
| 166 | |
| 167 // Now that we have received the name for the IPC channel we will use for our | |
| 168 // security key request, we want to disconnect from the intial IPC channel | |
| 169 // and then connect to the new one. | |
| 170 // NOTE: We do not want to perform these tasks now as we are in the middle of | |
| 171 // existing IPC message handler, thus we post the tasks so they will be | |
| 172 // handled after this method completes. | |
| 173 base::ThreadTaskRunnerHandle::Get()->PostTask( | |
| 174 FROM_HERE, base::Bind(&RemoteSecurityKeyIpcClient::ConnectToIpcChannel, | |
| 175 weak_factory_.GetWeakPtr(), | |
| 176 base::ConstRef(ipc_channel_name_))); | |
| 177 } | |
| 178 | |
| 179 void RemoteSecurityKeyIpcClient::OnSecurityKeyResponse( | |
| 180 const std::string& response_data) { | |
| 181 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 182 DCHECK(!connection_error_callback_.is_null()); | |
| 183 | |
| 184 if (!response_data.empty()) { | |
| 185 base::ResetAndReturn(&response_callback_).Run(response_data); | |
| 186 } else { | |
| 187 LOG(ERROR) << "Invalid response received"; | |
| 188 base::ResetAndReturn(&connection_error_callback_).Run(); | |
| 189 } | |
| 190 } | |
| 191 | |
| 192 void RemoteSecurityKeyIpcClient::ConnectToIpcChannel( | |
| 193 const std::string& channel_name) { | |
| 194 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 195 | |
| 196 // Verify that any existing IPC connection has been closed. | |
| 197 CloseIpcConnection(); | |
| 198 | |
| 199 // The retry loop is needed as the IPC Servers we connect to are reset (torn | |
| 200 // down and recreated) and we should be resilient in that case. | |
| 201 const base::TimeDelta kTotalWaitTime = | |
| 202 base::TimeDelta::FromMilliseconds(1000); | |
| 203 const base::TimeDelta kPerIterationWaitTime = | |
| 204 base::TimeDelta::FromMilliseconds(25); | |
| 205 const int kLoopIterations = kTotalWaitTime / kPerIterationWaitTime; | |
| 206 IPC::ChannelHandle channel_handle(channel_name); | |
| 207 for (int i = 0; i < kLoopIterations; i++) { | |
| 208 ipc_channel_ = IPC::Channel::CreateNamedClient(channel_handle, this); | |
| 209 if (ipc_channel_->Connect()) { | |
| 210 return; | |
| 211 } | |
| 212 | |
| 213 ipc_channel_.reset(); | |
| 214 base::PlatformThread::Sleep(kPerIterationWaitTime); | |
| 215 } | |
| 216 | |
| 217 if (!connection_error_callback_.is_null()) { | |
| 218 base::ResetAndReturn(&connection_error_callback_).Run(); | |
| 219 } | |
| 220 } | |
| 221 | |
| 222 } // namespace remoting | |
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Chromium Code Reviews
Issue 2162083003:
Renaming Gnubby and RemoteSecurityKey files/classes/members (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master