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1 // Copyright (c) 2008-2009 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 // cmessagehandler.cpp |
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15 // |
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16 // |
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17 /** |
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18 @file |
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19 @internalTechnology |
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20 */ |
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21 |
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22 //System include |
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23 #include <mdns/cdnsmessagecomposerparser.h> |
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24 #include <mdns/cdnsmessage.h> |
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25 #include <e32base.h> |
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26 |
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27 //user include |
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28 #include "cmessagehandler.h" |
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29 #include "cqueryhandler.h" |
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30 #include "ccacheentry.h" |
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31 #include "cresponsehandler.h" |
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32 #include "cadvertizehandler.h" |
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33 #include <mdns/mdnscachemgr.h> |
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34 |
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35 __FLOG_STMT(_LIT8(KComponent,"MDNSServer");) |
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36 // |
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37 /** |
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38 Two phase constructor |
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39 @param aServer reference to CBonjourServer |
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40 @return pointer to CMessageHandler |
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41 */ |
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42 CMessageHandler* CMessageHandler::NewL(CMdnsServer& aServer) |
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43 { |
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44 CMessageHandler* self = new (ELeave) CMessageHandler(aServer); |
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45 CleanupStack::PushL(self); |
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46 self->ConstructL(); |
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47 CleanupStack::Pop(); |
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48 return self; |
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49 } |
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50 /** |
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51 Implementation of MSocketHandlerObserver |
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52 @param aData packet recieved from the mdns port |
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53 @param aAddr address from which packet is recieved |
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54 @param aLength length of the packet reieved |
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55 @return void |
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56 */ |
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57 void CMessageHandler::OnCompletionL(TDesC8& aData, const TSockAddr& aAddr, TInt aLength ) |
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58 { |
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59 __FLOG(_L8("CMessageHandler::OnCompletionL - Entry")); |
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60 HandleIncomingPacketL(aData ,aAddr ,aLength ); |
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61 iRecieveSocket->Activate(TSocketHandlerParams(ESocketRecieve)); |
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62 __FLOG(_L8("CMessageHandler::OnCompletionL - Exit")); |
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63 } |
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64 /** |
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65 Any error in the socket will be notified here |
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66 @paran aError error with which socket leaves |
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67 @return void |
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68 */ |
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69 void CMessageHandler::OnError(TInt /*aError*/) |
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70 { |
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71 __FLOG(_L8("CMessageHandler::OnError -Entry Exit")); |
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72 } |
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73 |
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74 /** |
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75 Constructor |
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76 */ |
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77 CMessageHandler::CMessageHandler(CMdnsServer& aServer):iServer(aServer) |
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78 { |
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79 |
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80 } |
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81 |
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82 /** |
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83 Two phase constructor |
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84 */ |
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85 void CMessageHandler::ConstructL() |
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86 { |
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87 __FLOG_OPEN(KMDNSSubsystem, KComponent); |
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88 __FLOG(_L8("CMessageHandler::ConstructL - Entry")); |
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89 iQueryHandler = CQueryHandler::NewL(*this); |
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90 iResponseHandler = CResponseHandler::NewL(*this); |
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91 iAdvertizeHandler = CAdvertizeHandler::NewL(*this); |
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92 iRecieveSocket = CSocketHandler::NewL(iServer.Socket(),*this,ESocketRecieve); |
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93 iSendMessageQueue = CSendMessageQueue::NewL(iServer.Socket()); |
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94 iRecieveSocket->Activate(TSocketHandlerParams(ESocketRecieve)); |
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95 iDnsCache = CMDNSCacheManager::NewL(200); |
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96 iDummyhandler = CBaseHandler::NewL(*this); |
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97 __FLOG(_L8("CMessageHandler::ConstructL - Exit")); |
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98 } |
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99 |
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100 /* |
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101 Destructor |
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102 */ |
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103 CMessageHandler::~CMessageHandler() |
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104 { |
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105 __FLOG(_L8("CMessageHandler::~CMessageHandler - Entry")); |
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106 delete iQueryHandler; |
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107 delete iResponseHandler; |
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108 delete iAdvertizeHandler; |
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109 delete iRecieveSocket; |
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110 TRAPD(err,iDnsCache->DumpCacheL()); |
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111 delete iDnsCache; |
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112 delete iPacket; |
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113 delete iSendMessageQueue; |
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114 delete iDummyhandler; |
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115 __FLOG(_L8("CMessageHandler::~CMessageHandler - Exit")); |
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116 __FLOG_CLOSE; |
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117 } |
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118 /** |
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119 This method parse the packet and dispatch the packet for handling it based on the operation requested. |
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120 from the header |
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121 @param aData packet read from the mdns port |
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122 @param aAddr address from which the packet is recieved |
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123 @param length lenght of the data recieved |
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124 @return void |
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125 */ |
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126 void CMessageHandler::HandleIncomingPacketL(TDesC8& aData, const TSockAddr& aAddr, TInt /*length*/) |
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127 { |
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128 __FLOG(_L8("CMessageHandler::HandleIncomingPacketL - Entry")); |
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129 CDnsMessageComposerParser* comPos = CDnsMessageComposerParser::NewL(); |
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130 CleanupStack::PushL(comPos); |
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131 CDnsMessage* message = comPos->ParseMessageL(aData); |
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132 CleanupStack::PushL(message); |
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133 CBaseHandler& iOperationHandler = GetHandlerL(*message); |
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134 iOperationHandler.HandleIncomingPacketL(*message ,aAddr); |
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135 CleanupStack::PopAndDestroy(message);//comPos and message |
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136 CleanupStack::PopAndDestroy(comPos); |
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137 __FLOG(_L8("CMessageHandler::HandleIncomingPacketL - Exit")); |
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138 } |
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139 |
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140 /** |
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141 This is a factory method which reads the packet and returns the handle to either |
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142 response or query handler |
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143 @param aMessage Dnspacket to read the header and to constructthe appropriate handler. |
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144 @return Poointer to CBaseHandler --base class to both response and query handler. |
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145 */ |
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146 CBaseHandler& CMessageHandler::GetHandlerL(CDnsMessage& aMessage) |
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147 { |
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148 __FLOG(_L8("CMessageHandler::GetHandlerL - Entry")); |
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149 TDnsHeader header = aMessage.Header(); |
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150 // |
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151 if(header.IsQuery() && !header.IsAuthoritative()) |
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152 { |
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153 return *iQueryHandler; |
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154 } |
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155 else if(header.IsAuthoritative()) |
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156 { |
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157 return *iResponseHandler; |
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158 } |
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159 else |
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160 { |
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161 return *iDummyhandler; |
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162 } |
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163 __FLOG(_L8("CMessageHandler::GetHandlerL - Exit")); |
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164 } |
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165 /** |
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166 @return return a reference to CacheManager |
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167 */ |
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168 MDNSCacheMgr& CMessageHandler::DnsCache() const |
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169 { |
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170 __FLOG(_L8("CMessageHandler::DnsCache -Entry Exit")); |
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171 return *iDnsCache; |
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172 } |
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173 |
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174 /* |
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175 * Routes the query sent by the client to query handler to handle it. |
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176 * @param aMessage Pointer to a message object ;contains the query. |
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177 * @param aHandle session id which generated the query. |
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178 */ |
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179 void CMessageHandler::ServiceClientQueryL(CDnsMessage* aMessage,TInt aHandle) |
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180 { |
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181 __FLOG(_L8("CMessageHandler::ServiceClientQueryL - Entry")); |
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182 iQueryHandler->ServiceClientQueryL(aMessage, aHandle); |
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183 __FLOG(_L8("CMessageHandler::ServiceClientQueryL - Exit")); |
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184 } |
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185 |
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186 /* |
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187 * returns the pointer to the messagequeue. |
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188 */ |
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189 CSendMessageQueue& CMessageHandler::MessageQueue()const |
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190 { |
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191 __FLOG(_L8("CMessageHandler::MessageQueue -Entry Exit")); |
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192 return *iSendMessageQueue; |
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193 } |
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194 |
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195 /* |
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196 * Notify the server after the query has been handled. |
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197 * @param aClientHandle SessionId which had sent the query. |
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198 */ |
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199 void CMessageHandler::NotifyClientQuery(TInt aClientHandle) |
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200 { |
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201 __FLOG(_L8("CMessageHandler::NotifyClientQuery - Entry")); |
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202 iServer.NotifyClientQuery(aClientHandle); |
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203 __FLOG(_L8("CMessageHandler::NotifyClientQuery - Exit")); |
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204 } |
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205 |
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206 /* |
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207 * Route an internal query to the query handler |
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208 * @param aMessage pointer to the dnsmeesage containg the query. |
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209 * @param Observer to which successfull delivery of packet to be notified. |
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210 */ |
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211 void CMessageHandler::SendQueryL(CDnsMessage* aMessage, MMessageHandler& aObserver) |
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212 { |
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213 __FLOG(_L8("CMessageHandler::SendQueryL - Entry")); |
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214 iQueryHandler->SendQueryL(aMessage, aObserver); |
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215 __FLOG(_L8("CMessageHandler::SendQueryL - Exit")); |
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216 } |
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217 /* |
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218 * Route the packet to be advertised to the adveritser. |
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219 * @param aData array of CDnsresourceData to be advertised. |
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220 * @param aSessionId session which adveritised the packet. |
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221 */ |
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222 void CMessageHandler::AdvertizePacketL(const RPointerArray<CDnsResourceData> aData, TInt aSessionId,TBool aIsUpdate) |
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223 { |
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224 __FLOG(_L8("CMessageHandler::AdvertizePacketL - Entry")); |
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225 iAdvertizeHandler->AdvertizePacketL(aData, aSessionId,aIsUpdate); |
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226 __FLOG(_L8("CMessageHandler::AdvertizePacketL - Exit")); |
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227 } |
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228 |
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229 /* |
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230 * Notify the server when a new service is published |
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231 * @param aName name of the service published |
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232 * inacase of autoresolve name will be the new published name. |
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233 * @param aError will be the result of publish.ESuccess if successfull and E*Conflict. |
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234 * @param aSessionId session which initaiated publish. |
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235 * |
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236 */ |
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237 void CMessageHandler::NotifyServicePublishL(const RBuf8& aName,TInt aError, TInt aSessionId) |
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238 { |
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239 __FLOG(_L8("CMessageHandler::NotifyServicePublishL - Entry")); |
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240 iServer.NotifyServicePublishL(aName,aError, aSessionId); |
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241 __FLOG(_L8("CMessageHandler::NotifyServicePublishL - Exit")); |
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242 } |
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243 |
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244 /* |
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245 * @param aProbing ETrue if hostprobing in progress. |
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246 */ |
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247 void CMessageHandler::SetStateHostProbing(TBool aProbing) |
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248 { |
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249 __FLOG(_L8("CMessageHandler::SetStateHostProbing - Entry")); |
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250 iServer.SetStateHostProbing(aProbing); |
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251 __FLOG(_L8("CMessageHandler::SetStateHostProbing - Exit")); |
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252 } |
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253 |
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254 /* |
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255 * notify the server when a new service has been published in the network |
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256 * @param aName array of new service published , for the servcetype client has requested. |
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257 */ |
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258 void CMessageHandler::NotifyNewServiceL(const RArray<RBuf8>& aName) |
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259 { |
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260 __FLOG(_L8("CMessageHandler::NotifyNewServiceL - Entry")); |
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261 iServer.NotifyNewServiceL(aName); |
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262 __FLOG(_L8("CMessageHandler::NotifyNewServiceL - Exit")); |
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263 } |
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264 |
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265 CMdnsServer& CMessageHandler::Server() |
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266 { |
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267 return iServer; |
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268 } |