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1 // Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Name : signalserver.cpp |
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15 // Part of : Signal Server |
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16 // |
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17 |
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18 |
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19 |
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20 #include <e32base.h> |
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21 #include "signalserver.h" |
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22 #include "signalsession.h" |
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23 #include "signalcommon.h" |
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24 #include "tsignalmessage.h" |
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25 #include <signal.h> |
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26 |
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27 |
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28 |
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29 static void RunTheServerL() |
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30 { |
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31 CSignalServer* lServer = 0; |
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32 |
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33 User::LeaveIfError(RThread::RenameMe(KServerName)); |
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34 |
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35 CActiveScheduler* scheduler = new (ELeave) CActiveScheduler; |
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36 CleanupStack::PushL(scheduler); |
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37 CActiveScheduler::Install(scheduler); |
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38 lServer = static_cast<CSignalServer*>(CSignalServer::NewL()); |
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39 RProcess::Rendezvous(KErrNone); |
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40 CActiveScheduler::Start(); |
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41 if(lServer) |
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42 { |
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43 delete lServer; |
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44 lServer = 0; |
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45 } |
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46 CleanupStack::PopAndDestroy(); |
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47 } |
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48 |
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49 static TInt RunServer() |
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50 { |
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51 TRAPD(ret, RunTheServerL()); |
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52 return ret; |
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53 } |
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54 |
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55 //------------------------------------------------------------------------------- |
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56 // Function Name : E32Main() |
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57 // Description : Entry point for the server process. |
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58 // |
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59 //------------------------------------------------------------------------------- |
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60 TInt E32Main() |
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61 { |
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62 TInt ret = KErrNoMemory; |
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63 CTrapCleanup* cleanup = CTrapCleanup::New(); |
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64 if (cleanup) |
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65 { |
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66 ret = RunServer(); |
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67 delete cleanup; |
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68 } |
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69 return ret; |
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70 } |
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71 |
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72 CSignalServer::CSignalServer(CActive::TPriority aPriority) : CServer2(aPriority, ESharableSessions) |
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73 { |
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74 iSessionCount = 0; |
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75 } |
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76 |
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77 CSignalServer::~CSignalServer() |
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78 { |
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79 if(iShutDown) |
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80 { |
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81 delete iShutDown; |
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82 iShutDown = 0; |
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83 } |
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84 } |
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85 |
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86 CServer2* CSignalServer::NewL() |
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87 { |
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88 CSignalServer* self = new (ELeave)CSignalServer(EPriorityStandard); |
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89 CleanupStack::PushL(self); |
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90 self->ConstructL(); |
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91 CleanupStack::Pop(); |
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92 return self; |
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93 } |
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94 |
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95 void CSignalServer::ConstructL() |
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96 { |
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97 StartL(KServerName); |
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98 iShutDown = CSigShutDown::NewL(); |
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99 RPipe::Init(); |
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100 iShutDown->Start(); |
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101 } |
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102 |
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103 TInt CSignalServer::CheckForCapability(const RMessage2& aMessage) |
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104 { |
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105 RThread lThread; |
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106 RProcess lProcess; |
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107 TInt lRetVal = KErrGeneral; |
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108 |
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109 TInt lPid = aMessage.Int0(); |
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110 TInt lSigNo = aMessage.Int1(); |
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111 |
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112 if(lSigNo != SIGKILL && lSigNo != SIGSTOP) |
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113 return KErrNone; |
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114 |
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115 lRetVal = aMessage.Client(lThread); |
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116 if(lRetVal!= KErrNone) |
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117 return lRetVal; |
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118 lRetVal = lThread.Process(lProcess); |
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119 if(lRetVal!= KErrNone) |
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120 return lRetVal; |
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121 |
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122 if(!lProcess.HasCapability(ECapabilityPowerMgmt) && lPid!=lProcess.Id()) |
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123 lRetVal = KErrGeneral; |
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124 else |
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125 lRetVal = KErrNone; |
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126 |
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127 lThread.Close(); |
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128 lProcess.Close(); |
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129 return lRetVal; |
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130 } |
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131 |
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132 CSession2* CSignalServer::NewSessionL(const TVersion& aVersion,const RMessage2& /*aMessage2*/) const |
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133 { |
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134 TVersion v(KSignalServMajorVersionNumber, KSignalServMinorVersionNumber, KSignalServBuildVersionNumber); |
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135 |
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136 if (!User::QueryVersionSupported(v, aVersion)) |
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137 { |
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138 User::Leave(KErrNotSupported); |
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139 } |
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140 |
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141 return CSignalSession::NewL(); // TBD |
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142 } |
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143 |
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144 void CSignalServer::AddSession() |
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145 { |
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146 iSessionCount++; |
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147 iShutDown->Cancel(); |
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148 } |
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149 |
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150 void CSignalServer::RemoveSession() |
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151 { |
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152 iSessionCount--; |
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153 |
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154 TInt lIdx = 0; |
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155 for(lIdx = 0; lIdx < iProcessHdlList.Count();) |
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156 { |
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157 TProcessId lPid(iProcessHdlList[lIdx].mPid); |
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158 RProcess lProcHdl; |
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159 if(lProcHdl.Open(lPid) != KErrNone) |
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160 { |
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161 iProcessHdlList.Remove(lIdx); |
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162 } |
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163 else |
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164 { |
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165 lProcHdl.Close(); |
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166 lIdx++; |
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167 } |
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168 } |
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169 |
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170 if( iSessionCount == 0 ) |
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171 { |
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172 iShutDown->Start(); |
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173 } |
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174 } |
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175 |
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176 void CSignalServer::ServiceL(const RMessage2& aMessage) |
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177 { |
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178 TInt lPid = 0; |
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179 TOeProcessHdl lTmpHdl; |
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180 TInt lIndex = 0; |
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181 TUint8 lSignal = 0; |
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182 RThread lClientThread; |
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183 RProcess lProcess; |
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184 |
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185 switch (aMessage.Function ()) |
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186 { |
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187 //if this query is related to message Q, call |
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188 //ServiceL of message Q handler |
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189 case ESendSignal: |
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190 if(CheckForCapability(aMessage) != KErrNone) |
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191 aMessage.Complete(KErrPermissionDenied); |
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192 else |
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193 { |
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194 // serialize data |
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195 lPid = aMessage.Int0(); |
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196 lSignal = aMessage.Int1(); |
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197 |
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198 lTmpHdl.mPid = lPid; |
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199 lIndex = iProcessHdlList.Find(lTmpHdl,TIdentityRelation<TOeProcessHdl>(TOeProcessHdl::MatchByPid)); |
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200 |
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201 if(lIndex == KErrNotFound) |
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202 aMessage.Complete(KErrGeneral); |
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203 else |
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204 { |
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205 TSignalMessage lMsg; |
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206 lMsg.mType = TSignalMessage::ESignal; |
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207 lMsg.mSignal = lSignal; |
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208 TBuf8<KSigMsgLength> lMsgBuf; |
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209 lMsg.Marshall(lMsgBuf); |
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210 |
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211 iProcessHdlList[lIndex].mPipe.WriteBlocking(lMsgBuf,KSigMsgLength); |
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212 aMessage.Complete (KErrNone); |
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213 } |
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214 } |
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215 break; |
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216 case ESendSignalValue: |
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217 if(CheckForCapability(aMessage) != KErrNone) |
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218 aMessage.Complete(KErrPermissionDenied); |
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219 else |
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220 { |
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221 // serialize data |
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222 lPid = aMessage.Int0(); |
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223 lSignal = aMessage.Int1(); |
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224 TUint32 lValue = (TUint32)aMessage.Int2(); |
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225 lTmpHdl.mPid = lPid; |
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226 |
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227 lIndex = iProcessHdlList.Find(lTmpHdl,TIdentityRelation<TOeProcessHdl>(TOeProcessHdl::MatchByPid)); |
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228 if(lIndex == KErrNotFound) |
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229 aMessage.Complete(KErrGeneral); |
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230 else |
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231 { |
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232 TSignalMessage lMsg; |
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233 lMsg.mType = TSignalMessage::ESignalValuePair; |
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234 lMsg.mSigVal.mSignal = lSignal; |
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235 lMsg.mSigVal.mValue = lValue; |
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236 TBuf8<KSigMsgLength> lMsgBuf; |
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237 lMsg.Marshall(lMsgBuf); |
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238 |
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239 iProcessHdlList[lIndex].mPipe.WriteBlocking(lMsgBuf,KSigMsgLength); |
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240 aMessage.Complete (KErrNone); |
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241 } |
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242 } |
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243 break; |
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244 case ESendPipe: |
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245 aMessage.Client(lClientThread); |
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246 lClientThread.Process(lProcess); |
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247 lPid = lProcess.Id(); |
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248 |
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249 lTmpHdl.mPid = lPid; |
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250 lIndex = iProcessHdlList.Find(lTmpHdl,TIdentityRelation<TOeProcessHdl>(TOeProcessHdl::MatchByPid)); |
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251 if(lIndex == KErrNotFound) |
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252 { |
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253 TOeProcessHdl lHdl; |
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254 lHdl.mPid = lPid; |
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255 lHdl.mPipe.Open(aMessage,0); |
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256 iProcessHdlList.Append(lHdl); |
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257 } |
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258 else |
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259 { |
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260 if(iProcessHdlList[lIndex].mPipe.Open(aMessage,0)!=KErrNone) |
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261 aMessage.Complete(KErrGeneral); |
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262 } |
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263 aMessage.Complete(KErrNone); |
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264 break; |
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265 default: |
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266 aMessage.Complete(KErrNotSupported); |
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267 break; |
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268 } |
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269 return; |
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270 } |