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1 /** |
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2 This file is part of CWRT package ** |
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3 |
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4 Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** |
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5 |
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6 This program is free software: you can redistribute it and/or modify |
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7 it under the terms of the GNU (Lesser) General Public License as |
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8 published by the Free Software Foundation, version 2.1 of the License. |
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9 This program is distributed in the hope that it will be useful, but |
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10 WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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12 (Lesser) General Public License for more details. You should have |
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13 received a copy of the GNU (Lesser) General Public License along |
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14 with this program. If not, see <http://www.gnu.org/licenses/>. |
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15 */ |
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16 |
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17 |
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18 #include "serviceipclocalsocketsession.h" |
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19 #include "serviceipcserverlocalsocket_p.h" |
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20 #include "serviceipcserver.h" |
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21 #include <QLocalSocket> |
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22 #include <QLocalServer> |
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23 #include <serviceipcdefs.h> |
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24 #include <clientinfo.h> |
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25 |
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26 namespace WRT |
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27 { |
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28 /*! |
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29 \class ServiceFwIPCServerLocalSocket |
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30 Service Framework IPC Server using QLocalSocket |
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31 */ |
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32 |
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33 /*! |
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34 Constructor |
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35 @param aParent parent to this object |
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36 */ |
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37 ServiceFwIPCServerLocalSocket::ServiceFwIPCServerLocalSocket(QObject* aParent) |
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38 : QObject(aParent) |
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39 , m_Listener(NULL) |
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40 { |
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41 m_Listener = new QLocalServer(this); |
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42 QObject::connect(m_Listener, SIGNAL(newConnection()), |
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43 this, SLOT(handleNewConnection()) ); |
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44 m_isValidSession = true; |
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45 m_isKeepServer = false; |
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46 m_sessionIdTable = new SessionIdTable(); |
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47 } |
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48 |
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49 /*! |
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50 Destructor |
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51 */ |
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52 ServiceFwIPCServerLocalSocket::~ServiceFwIPCServerLocalSocket() |
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53 { |
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54 m_Listener->close(); |
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55 if(m_isValidSession){ |
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56 char* data = (char*) m_SharedMem.data(); |
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57 if (data) { |
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58 strcpy(data, SERVERNOTSTARTED); |
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59 } |
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60 } |
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61 m_SharedMem.detach(); |
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62 |
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63 delete m_sessionIdTable; |
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64 } |
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65 |
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66 /*! |
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67 Start listening for new service requests |
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68 @param aServerName name of this server |
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69 @return true if listen was successful |
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70 */ |
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71 bool ServiceFwIPCServerLocalSocket::listen(const QString& aServerName) |
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72 { |
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73 m_isValidSession = false; |
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74 bool firstLaunch(false); |
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75 // Create the global chunk that this process owns |
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76 m_SharedMem.setKey(aServerName); |
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77 |
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78 if (!m_SharedMem.attach()) { |
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79 // Single byte of data + \0 |
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80 m_SharedMem.create(2); |
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81 firstLaunch = true; |
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82 } |
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83 |
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84 // Initial data is 0, ie server not started |
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85 // Check if data is NULL, this handles the case where shared mem cannot attach or create |
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86 // |
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87 char* data = (char*) m_SharedMem.data(); |
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88 if ((data && (strcmp(data, SERVERNOTSTARTED)==0)) || firstLaunch) { |
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89 strcpy(data, SERVERNOTSTARTED); |
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90 |
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91 //Try to listen |
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92 for (int i=2; i>0; i--) { |
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93 m_isValidSession = m_Listener->listen(aServerName); |
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94 if (m_isValidSession) { |
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95 // Server started flag |
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96 strcpy(data, SERVERSTARTED); |
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97 break; |
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98 } else { |
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99 QLocalServer::removeServer(aServerName); |
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100 } |
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101 } |
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102 |
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103 // Signal the client to continue and that server is started |
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104 QSystemSemaphore sem(aServerName + SERVERSEM, 0); |
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105 sem.release(1); |
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106 } |
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107 return m_isValidSession; |
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108 } |
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109 |
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110 /*! |
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111 Shutdown the server and stop serving clients |
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112 @return void |
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113 */ |
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114 void ServiceFwIPCServerLocalSocket::disconnect() |
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115 { |
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116 m_Listener->close(); |
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117 |
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118 // Clean up all sessions |
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119 int count = m_Sessions.count(); |
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120 for (int i = 0; i < count; ++i) { |
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121 QObject::disconnect(m_Sessions[i], SIGNAL(disconnected( ServiceIPCSession* ) ), |
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122 this, SLOT( handleSessionDisconnect( ServiceIPCSession* ) ) ); |
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123 m_Sessions[i]->close(); |
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124 delete m_Sessions[i]; |
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125 } |
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126 m_Sessions.clear(); |
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127 } |
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128 |
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129 /*! |
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130 Handle a new connection, this slot is connected to the socket's newConnection() signal |
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131 @return void |
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132 */ |
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133 void ServiceFwIPCServerLocalSocket::handleNewConnection() |
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134 { |
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135 // Create a new session to host the client |
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136 // |
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137 QLocalSocket* newSocket = m_Listener->nextPendingConnection(); |
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138 ServiceIPCSession* session = new LocalSocketSession(newSocket, Observer()); |
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139 if (session) { |
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140 session->setParent(this); |
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141 |
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142 QObject::connect(session, SIGNAL(disconnected( ServiceIPCSession* ) ), |
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143 this, SLOT( handleSessionDisconnect( ServiceIPCSession* ) ) ); |
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144 m_Sessions.append(session); |
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145 stopExitTimer(); |
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146 |
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147 ClientInfo *client = new ClientInfo(); |
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148 client->setSessionId(m_sessionIdTable->allocate()); |
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149 session->setClientInfo(client); |
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150 } |
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151 } |
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152 |
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153 /*! |
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154 Handle the end of a session |
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155 @param aSession session to be disconnected |
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156 */ |
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157 void ServiceFwIPCServerLocalSocket::handleSessionDisconnect(ServiceIPCSession* aSession) |
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158 { |
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159 int c = m_Sessions.removeAll(aSession); |
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160 |
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161 if ((m_Sessions.count() == 0) && (!m_isKeepServer)) { |
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162 startExitTimer(); |
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163 } |
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164 |
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165 qDebug() << "Session cleaned up: " << c; |
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166 } |
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167 |
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168 /*! |
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169 Config IPC server Life time \n |
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170 Start the shutdown timer if it is the last session and aKeepServer is trues. |
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171 @param aKeepLife to keep or disconnect IPC server when all clients are shutdown. |
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172 */ |
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173 void ServiceFwIPCServerLocalSocket::configIpcServerLifetime(bool aKeepServer) |
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174 { |
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175 if ((m_isKeepServer) && (m_Sessions.count() == 0) && (!aKeepServer)) { |
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176 startExitTimer(); |
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177 } |
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178 m_isKeepServer = aKeepServer; |
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179 } |
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180 } |
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181 // END OF FILE |