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1 // Copyright (c) 2004-2009 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 // Implements the DHCPv4 States representing each interface |
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15 // |
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16 // |
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17 |
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18 /** |
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19 @file DHCPIP4States.cpp |
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20 @internalTechnology |
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21 */ |
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22 |
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23 #include "DHCPIP4States.h" |
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24 #include "DHCPMsg.h" |
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25 #include "DHCPServer.h" |
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26 |
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27 #include "DHCPStatesDebug.h" |
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28 |
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29 CAsynchEvent* CDHCPIP4Select::ProcessL(TRequestStatus& aStatus) |
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30 /** |
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31 * Interface function, execute state machine |
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32 * |
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33 * @internalTechnology |
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34 */ |
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35 { |
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36 DHCP_DEBUG_PUBLISH_STATE(DHCPDebug::EDHCPIP4Select); |
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37 CDHCPIP4StateMachine& rDHCPIPv4 = DHCPIPv4(); |
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38 |
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39 if (rDHCPIPv4.iReceiving) |
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40 { |
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41 if((rDHCPIPv4.GetMessageTypeL() == DHCPv4::EDHCPOffer) && rDHCPIPv4.CheckXid()) |
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42 { |
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43 return CDHCPSelect::ProcessL(aStatus); |
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44 } |
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45 else |
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46 { |
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47 rDHCPIPv4.iReceiving = EFalse; |
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48 } |
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49 } |
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50 return rDHCPIPv4.ReceiveL(&aStatus); |
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51 } |
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52 |
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53 #ifdef SYMBIAN_NETWORKING_DHCPSERVER |
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54 CAsynchEvent* CDHCPIP4HandleClientMsgs::ProcessL(TRequestStatus& aStatus) |
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55 /** |
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56 * Interface function, execute state machine |
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57 * |
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58 * @internalTechnology |
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59 */ |
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60 { |
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61 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("CDHCPIP4HandleClientMsgs::ProcessL"))); |
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62 |
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63 DHCP_DEBUG_PUBLISH_STATE(DHCPDebug::EDHCPIP4HandleClientMsgs); |
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64 CDHCPIP4StateMachine& rDHCPv4 = DHCPIPv4(); |
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65 rDHCPv4.iReceiving = EFalse; |
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66 |
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67 #ifdef SYMBIAN_NETWORKING_ADDRESS_PROVISION |
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68 TBool provisioned = rDHCPv4.ClientHwAddrProvisioned(); |
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69 if(provisioned) |
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70 { |
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71 #endif //SYMBIAN_NETWORKING_ADDRESS_PROVISION |
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72 rDHCPv4.CheckClientMsgL(); |
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73 #ifdef SYMBIAN_NETWORKING_ADDRESS_PROVISION |
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74 } |
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75 #endif //SYMBIAN_NETWORKING_ADDRESS_PROVISION |
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76 // self complete to continue the state machine |
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77 TRequestStatus* p = &aStatus; |
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78 User::RequestComplete(p, KErrNone); |
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79 return iNext; |
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80 } |
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81 |
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82 CAsynchEvent* CDHCPIP4SendRequestResponse::ProcessL(TRequestStatus& aStatus) |
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83 { |
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84 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("CDHCPIP4SendRequestResponse::ProcessL"))); |
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85 |
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86 DHCP_DEBUG_PUBLISH_STATE(DHCPDebug::EDHCPIP4SendRequestResponse); |
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87 CDHCPIP4StateMachine& rDHCPIPv4 = DHCPIPv4(); |
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88 |
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89 if (rDHCPIPv4.iReceiving) |
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90 { |
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91 if((rDHCPIPv4.GetClientMessageTypeL() == DHCPv4::EDHCPRequest)) |
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92 { |
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93 if(rDHCPIPv4.CheckXid()) |
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94 { |
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95 // this is from the same client which we last serviced |
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96 return CDHCPSendRequestResponse::ProcessL(aStatus); |
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97 } |
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98 else |
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99 { |
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100 // this request is not from the same client as the one we recently serviced |
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101 // check if this was a renew/rebind request from a client whom we provided an IP address in the past |
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102 // then we need to service this client and not ignore it |
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103 TUint32 clientAddr = rDHCPIPv4.GetClientIPAddress(); |
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104 if(rDHCPIPv4.GetIPAddressToOffer() == clientAddr || |
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105 !clientAddr) |
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106 { |
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107 rDHCPIPv4.SetClientIdentified(ETrue); |
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108 return CDHCPSendRequestResponse::ProcessL(aStatus); |
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109 } |
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110 else |
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111 { |
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112 // unexpected packet, proceed to recieve the packet and discard. |
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113 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("CDHCPIP4SendRequestResponse::ProcessL Unexpected packet"))); |
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114 rDHCPIPv4.iReceiving = EFalse; |
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115 } |
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116 } |
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117 } |
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118 else |
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119 { |
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120 rDHCPIPv4.iReceiving = EFalse; |
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121 } |
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122 } |
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123 return rDHCPIPv4.ReceiveOnPort67L(&aStatus); |
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124 } |
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125 |
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126 CAsynchEvent* CDHCPIP4SendInformResponse::ProcessL(TRequestStatus& aStatus) |
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127 { |
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128 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("CDHCPIP4SendInformResponse::ProcessL"))); |
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129 |
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130 DHCP_DEBUG_PUBLISH_STATE(DHCPDebug::EDHCPIP4SendInformResponse); |
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131 CDHCPIP4StateMachine& rDHCPIPv4 = DHCPIPv4(); |
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132 |
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133 if (rDHCPIPv4.iReceiving) |
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134 { |
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135 if((rDHCPIPv4.GetClientMessageTypeL() == DHCPv4::EDHCPInform)) |
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136 { |
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137 return CDHCPSendInformResponse::ProcessL(aStatus); |
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138 } |
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139 else |
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140 { |
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141 rDHCPIPv4.iReceiving = EFalse; |
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142 } |
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143 } |
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144 return rDHCPIPv4.ReceiveOnPort67L(&aStatus); |
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145 } |
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146 |
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147 void CDHCPIP4BindServer::TimerExpired() |
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148 { |
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149 CDHCPStateMachine& rDHCP = Dhcp(); |
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150 CDHCPBindServer::TimerExpired(); |
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151 if ( !rDHCP.TimerActive() ) |
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152 { |
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153 //finish either => bound or not |
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154 TRequestStatus* p = &iStateMachine->iStatus; |
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155 User::RequestComplete(p, iErr); |
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156 rDHCP.SetAsyncCancelHandler(NULL); |
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157 } |
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158 } |
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159 |
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160 #endif // SYMBIAN_NETWORKING_DHCPSERVER |
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161 |
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162 void CDHCPIP4WaitForDAD::TimerExpired() |
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163 { |
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164 CDHCPStateMachine& rDHCP = Dhcp(); |
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165 CDHCPWaitForDADBind::TimerExpired(); |
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166 if ( !rDHCP.TimerActive() ) |
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167 { |
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168 //finish either => bound or not |
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169 TRequestStatus* p = &iStateMachine->iStatus; |
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170 User::RequestComplete(p, iErr); |
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171 rDHCP.SetAsyncCancelHandler(NULL); |
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172 } |
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173 } |
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174 |
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175 |
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176 |