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1 /* |
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2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 #include <e32std.h> |
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18 #include <eui_addr.h> |
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19 #include <ip4_hdr.h> |
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20 #include <udp_hdr.h> |
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21 #include <tcp_hdr.h> |
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22 #include <in_chk.h> |
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23 #include <in_iface.h> |
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24 #include <comms-infras/nifif.h> |
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25 #include <in_sock.h> |
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26 #include "var.h" |
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27 #include "binder.h" |
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28 #include "provision.h" |
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29 |
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30 #ifdef SYMBIAN_ZERO_COPY_NETWORKING |
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31 #include <comms-infras/commsbuf.h> |
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32 #include <comms-infras/commsbufpond.h> |
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33 #include <comms-infras/commsbufpondop.h> |
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34 #else |
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35 #include <comms-infras/mbufmanager.h> |
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36 #endif |
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37 |
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38 using namespace ESock; |
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39 |
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40 #ifdef _DEBUG |
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41 _LIT8(KNif,"Legacy"); |
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42 _LIT8(KBinder4,"Binder4"); |
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43 _LIT8(KBinder6,"Binder6"); |
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44 #endif |
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45 |
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46 // |
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47 // CLegacyLoopbackBinder4 // |
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48 // |
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49 |
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50 CLegacyLoopbackBinder4::CLegacyLoopbackBinder4(CLegacyLoopbackSubConnectionFlow& aLegacyLoopbackSubConnectionFlow) : iLegacyLoopbackSubConnectionFlow(aLegacyLoopbackSubConnectionFlow) |
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51 { |
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52 __FLOG_OPEN(KNif, KBinder4); |
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53 // generate my local ip address (ip4) - vals potentially will be overwritten by any derived classes |
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54 iLocalAddressBase = KLegacyLoopbackLocalAddressBase; // also used later in control method |
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55 |
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56 TUint32 id = ((TUint32)this) % 255; |
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57 // Avoid the reserved address (least significant byte KLegacyLoopbackReservedHostId) that |
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58 // is never to be allocated as a local address. |
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59 if (id == KLegacyLoopbackReservedHostId) |
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60 { |
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61 ++id; |
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62 } |
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63 iLocalAddress = iLocalAddressBase + id; |
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64 __FLOG_3(_L8("CLegacyLoopbackBinder4 %08x:\tCLegacyLoopbackBinder4(CLegacyLoopbackSubConnectionFlow& %08x): iLocalAddress %08x"), this, &aLegacyLoopbackSubConnectionFlow, iLocalAddress); |
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65 } |
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66 |
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67 CLegacyLoopbackBinder4::~CLegacyLoopbackBinder4() |
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68 /** |
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69 Destroys 'this' |
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70 */ |
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71 { |
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72 if (iTestSubscriber) |
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73 { |
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74 iTestSubscriber->Cancel(); |
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75 } |
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76 delete iTestSubscriber; |
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77 delete iDrvReceiver; |
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78 delete iDrvSender; |
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79 __FLOG_1(_L8("CLegacyLoopbackBinder4 %08x:\t~CLegacyLoopbackBinder4()"), this); |
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80 ASSERT(iUpperControl == NULL); |
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81 ASSERT(iUpperReceiver == NULL); |
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82 ASSERT(!iErrorOneShot.IsActive()); |
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83 RDebug::Printf("closing driver\n"); |
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84 iDrv.Close(); |
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85 __FLOG_CLOSE; |
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86 } |
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87 |
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88 CLegacyLoopbackBinder4* CLegacyLoopbackBinder4::NewL(CLegacyLoopbackSubConnectionFlow& aLegacyLoopbackSubConnectionFlow) |
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89 { |
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90 CLegacyLoopbackBinder4* self = new (ELeave) CLegacyLoopbackBinder4(aLegacyLoopbackSubConnectionFlow); |
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91 CleanupStack::PushL(self); |
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92 |
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93 const TProviderInfo& providerInfo = static_cast<const TProviderInfoExt&>( |
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94 aLegacyLoopbackSubConnectionFlow.AccessPointConfig().FindExtensionL( |
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95 STypeId::CreateSTypeId(TProviderInfoExt::EUid, TProviderInfoExt::ETypeId))).iProviderInfo; |
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96 TInt ap = providerInfo.APId(); |
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97 if(CLegacyLoopbackFlowTestingSubscriber::ShouldRun(ap)) |
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98 { |
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99 ASSERT(self->iTestSubscriber==NULL); |
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100 self->iTestSubscriber = CLegacyLoopbackFlowTestingSubscriber::NewL(aLegacyLoopbackSubConnectionFlow, ap); |
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101 } |
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102 |
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103 // The send and receive paths each have an AO |
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104 self->iDrvReceiver = new(ELeave) CDrvReceiver(CActive::EPriorityHigh); |
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105 self->iDrvSender = new(ELeave) CDrvSender(CActive::EPriorityHigh); |
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106 |
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107 CleanupStack::Pop(self); |
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108 return self; |
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109 } |
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110 |
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111 void CLegacyLoopbackBinder4::LogPacketDetails(TInet6HeaderIP4* aIp4, const TDesC8& aCaption) |
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112 { |
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113 static_cast<void>(aIp4); |
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114 static_cast<void>(aCaption); |
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115 |
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116 #if defined __FLOG_ACTIVE |
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117 TBuf8<KLogBufferSize> log; |
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118 TInet6HeaderUDP* udp = NULL; |
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119 TInet6HeaderTCP* tcp = NULL; |
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120 TBuf8<10> prot; |
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121 TBuf8<40> length; |
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122 TInt srcPort = -1; |
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123 TInt dstPort = -1; |
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124 if(aIp4->Protocol() == KProtocolInetUdp) |
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125 { |
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126 udp = (TInet6HeaderUDP*) aIp4->EndPtr(); |
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127 prot = _L8("UDP"); |
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128 length.Format(_L8("payload %d"), udp->Length()); |
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129 srcPort = udp->SrcPort(); |
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130 dstPort = udp->DstPort(); |
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131 } |
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132 else if(aIp4->Protocol() == KProtocolInetTcp) |
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133 { |
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134 tcp = (TInet6HeaderTCP*) aIp4->EndPtr(); |
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135 prot = _L8("TCP"); |
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136 length.Format(_L8("payload %d"), aIp4->TotalLength() - aIp4->HeaderLength() - tcp->HeaderLength()); |
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137 srcPort = tcp->SrcPort(); |
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138 dstPort = tcp->DstPort(); |
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139 } |
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140 else |
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141 { |
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142 prot.Format(_L8("%d"), aIp4->Protocol()); |
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143 length.Format(_L8("tot_len %d"), aIp4->TotalLength()); |
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144 } |
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145 TDes8IgnoreOverflow overflow; |
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146 log.AppendFormat(_L8("%S %S %S src %08x:%d, dst %08x:%d"), &overflow, &aCaption, &prot, &length, |
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147 aIp4->SrcAddr(), srcPort, aIp4->DstAddr(), dstPort); |
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148 __FLOG(log); |
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149 #endif |
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150 } |
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151 |
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152 void CLegacyLoopbackBinder4::UpdateHeaders(TInet6HeaderIP4* aIp4, TInet6HeaderUDP* aUdp) |
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153 /** |
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154 Update the IPv4 and UDP headers to allow the packet to be looped back. |
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155 */ |
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156 { |
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157 __FLOG_STMT( LogPacketDetails(aIp4, _L8("CLegacyLoopbackBinder4:\tUpdateHeaders(...): ")) ); |
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158 |
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159 // swap over the destination and source addresses |
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160 TUint32 temp; |
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161 temp = aIp4->SrcAddr(); |
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162 aIp4->SetSrcAddr(aIp4->DstAddr()); |
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163 aIp4->SetDstAddr(temp); |
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164 |
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165 // swap over the destination and source ports |
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166 if (aUdp) |
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167 { |
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168 TUint tempPort; |
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169 tempPort = aUdp->DstPort(); |
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170 aUdp->SetDstPort(aUdp->SrcPort()); |
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171 aUdp->SetSrcPort(tempPort); |
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172 } |
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173 |
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174 // NB: don't need to recalculate any checksums since luckily IP sums don't detect transposition |
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175 __FLOG_4(_L("CLegacyLoopbackBinder4:\tUpdateHeaders(...): became src %08x:%d, dst %08x:%d"), |
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176 aIp4->SrcAddr(), aUdp? (TInt)aUdp->SrcPort(): -1, (TInt)aIp4->DstAddr(), aUdp? (TInt)aUdp->DstPort(): -1); |
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177 } |
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178 |
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179 MLowerDataSender::TSendResult CLegacyLoopbackBinder4::Send(RMBufChain& aData) |
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180 /** |
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181 Entry point for receiving IPv4 outgoing data |
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182 |
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183 @param aData MBuf chain containing data to send |
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184 @return an indication of whether the upper layer should block. |
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185 */ |
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186 { |
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187 RMBufPacket& pkt = static_cast<RMBufPacket&>(aData); |
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188 |
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189 pkt.Unpack(); |
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190 TInet6HeaderIP4* ip4 = (TInet6HeaderIP4*) pkt.First()->Ptr(); |
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191 __FLOG_STMT( LogPacketDetails(ip4, _L8("CLegacyLoopbackBinder4:\tSend(...): ")) ); |
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192 |
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193 if (ip4->Protocol() == KProtocolInetUdp || ip4->Protocol() == KProtocolInetTcp) |
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194 { |
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195 // get the "udp" header as well - cheating & relying upon UDP & TCP being in same place |
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196 TInet6HeaderUDP* udp = (TInet6HeaderUDP*) ip4->EndPtr(); |
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197 |
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198 // use the source or destination port number to decide whether or not to pass it through the loopback driver |
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199 // very weak this; dynamic ports could overlap. Really should do this for all packets and |
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200 // fix any impacted test code |
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201 TUint srcPort = udp->SrcPort(); |
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202 TUint dstPort = udp->DstPort(); |
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203 |
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204 if(dstPort >= KDriverReflectionRangeStartPort && dstPort <= KDriverReflectionRangeEndPort || |
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205 srcPort >= KDriverReflectionRangeStartPort && srcPort <= KDriverReflectionRangeEndPort) |
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206 { |
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207 if(!iLoopbackLoadAttempted) |
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208 { |
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209 iLoopbackLoadAttempted = ETrue; |
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210 TInt r = User::LoadPhysicalDevice(KLegacyLoopbackPddFileName); |
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211 RDebug::Printf("Loading PDD - %d\n", r); |
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212 if(r == KErrNone || r == KErrAlreadyExists) |
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213 { |
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214 r = User::LoadLogicalDevice(KLegacyLoopbackLddFileName); |
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215 RDebug::Printf("Loading LDD - %d\n", r); |
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216 if(r == KErrNone || r == KErrAlreadyExists) |
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217 { |
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218 r = iDrv.Open(); |
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219 RDebug::Printf("Opening driver - %d\n", r); |
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220 if(r == KErrNone) |
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221 { |
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222 // Prime the pathways |
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223 iDrvReceiver->Start(this, iDrv); |
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224 iDrvSender->Start(this, iDrv); |
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225 } |
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226 } |
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227 } |
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228 } |
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229 if(iDrv.Handle()) |
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230 { |
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231 // Swap the ports, because the receipt path also unconditionally swaps them (probably |
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232 // some test needs this |
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233 // ugh! should use a queue here when the write is still busy |
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234 udp->SetDstPort(srcPort); |
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235 udp->SetSrcPort(dstPort); |
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236 |
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237 __FLOG_4(_L("CLegacyLoopbackBinder4:\tSend(...): passing packet to driver as src %08x:%d, dst %08x:%d"), |
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238 ip4->SrcAddr(), dstPort, ip4->DstAddr(), srcPort); |
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239 |
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240 iDrvSender->QueueForSend(pkt); |
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241 return ESendAccepted; |
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242 } |
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243 } |
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244 else if(dstPort >= KBearerReflectionRangeStartPort && dstPort <= KBearerReflectionRangeEndPort || |
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245 srcPort >= KBearerReflectionRangeStartPort && srcPort <= KBearerReflectionRangeEndPort) |
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246 { |
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247 // Swap the ports, because the receipt path also unconditionally swaps them (probably |
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248 // some test needs this |
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249 udp->SetDstPort(srcPort); |
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250 udp->SetSrcPort(dstPort); |
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251 } |
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252 } |
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253 |
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254 // Loop the data straight back into the TCP/IP stack |
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255 pkt.Pack(); |
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256 ProcessPacket(aData); |
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257 return ESendAccepted; |
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258 } |
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259 |
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260 |
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261 MLowerDataSender* CLegacyLoopbackBinder4::Bind(MUpperDataReceiver& aUpperReceiver, MUpperControl& aUpperControl) |
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262 /** |
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263 Return the MLowerDataSender instance (CLegacyLoopbackBinder4) that we |
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264 previously allocated. |
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265 */ |
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266 { |
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267 __FLOG_3(_L8("CLegacyLoopbackBinder4 %08x:\tBind(aUpperReceiver %08x, aUpperControl %08x)"), this, &aUpperReceiver, &aUpperControl); |
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268 iUpperReceiver = &aUpperReceiver; |
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269 iUpperControl = &aUpperControl; |
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270 |
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271 // Signal upper layer that we are ready |
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272 BinderReady(); |
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273 |
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274 return this; |
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275 } |
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276 |
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277 void CLegacyLoopbackBinder4::Unbind(MUpperDataReceiver& aUpperReceiver, MUpperControl& aUpperControl) |
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278 /** |
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279 Forget our association with upper layer. |
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280 */ |
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281 { |
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282 static_cast<void>(aUpperReceiver); |
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283 static_cast<void>(aUpperControl); |
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284 __FLOG_1(_L8("CLegacyLoopbackBinder4 %08x:\tUnbind()"), this); |
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285 ASSERT(&aUpperReceiver == iUpperReceiver); |
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286 ASSERT(&aUpperControl == iUpperControl); |
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287 iUpperReceiver = NULL; |
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288 iUpperControl = NULL; |
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289 } |
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290 |
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291 void CLegacyLoopbackBinder4::BinderReady() |
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292 /** |
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293 Signal upper layer that we are ready |
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294 */ |
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295 { |
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296 __FLOG_1(_L8("CLegacyLoopbackBinder4 %08x:\tBinderReady()"), this); |
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297 |
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298 iUpperControl->StartSending(); |
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299 } |
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300 |
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301 void CLegacyLoopbackBinder4::ProcessPacket(RMBufChain& aPdu) |
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302 /** |
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303 Process incoming data |
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304 */ |
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305 { |
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306 // this received data has already been looped back... |
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307 // get the ip header from the RMBufChain |
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308 TInet6HeaderIP4* ip4 = (TInet6HeaderIP4*) aPdu.First()->Next()->Ptr(); |
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309 |
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310 if (ip4->Protocol() != KProtocolInetUdp && ip4->Protocol() != KProtocolInetTcp) |
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311 { |
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312 //Non UDP traffic goes here! |
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313 __FLOG_3(_L("CLegacyLoopbackBinder4 %08x:\tProcessPacket(): IPv4 length %d, protocol %d"), this, ip4->TotalLength(), ip4->Protocol()); |
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314 |
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315 UpdateHeaders(ip4, NULL); |
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316 // now process it (pass up the stack) |
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317 iUpperReceiver->Process(aPdu); |
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318 return; |
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319 } |
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320 |
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321 // get the udp header as well - assume only udp traffic here |
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322 __FLOG_STMT( LogPacketDetails(ip4, _L8("CLegacyLoopbackBinder4:\tProcessPacket(...): ")) ); |
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323 |
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324 TInet6HeaderUDP* udp = (TInet6HeaderUDP*) ip4->EndPtr(); |
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325 |
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326 // depending on the contents, pass it on up thru the stack |
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327 // or maybe do something else |
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328 |
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329 // use the destination port number to decide whether or not the payload is a command |
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330 TUint dstPort = udp->DstPort(); |
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331 if (KLegacyLoopbackCmdPort == dstPort) |
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332 { |
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333 // let's use the first payload byte as the command byte |
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334 switch (*(udp->EndPtr())) |
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335 { |
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336 case KForceDisconnect: |
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337 __FLOG(_L("KForceDisconnect command")); |
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338 // do some action |
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339 Flow()->Progress(KLinkLayerClosed, KErrCommsLineFail); |
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340 |
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341 Flow()->FlowDown(KErrCommsLineFail, MNifIfNotify::EDisconnect); |
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342 |
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343 // no return code so all we can do is respond with what we got |
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344 UpdateHeaders(ip4, udp); |
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345 iUpperReceiver->Process(aPdu); |
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346 break; |
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347 |
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348 case KForceReconnect: |
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349 __FLOG(_L("KForceReconnect command")); |
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350 // do some action |
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351 Flow()->Progress(KLinkLayerClosed, KErrCommsLineFail); |
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352 |
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353 Flow()->FlowDown(KErrCommsLineFail, MNifIfNotify::EReconnect); |
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354 |
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355 // no return code so all we can do is respond with what we got |
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356 UpdateHeaders(ip4, udp); |
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357 iUpperReceiver->Process(aPdu); |
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358 break; |
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359 |
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360 case KSendNotification: |
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361 __FLOG(_L("KSendNotification command")); |
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362 //let's write the result in the next byte of the reply |
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363 if (Flow()->AgentProvision()->IsDialIn() == KErrNotSupported) |
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364 udp->EndPtr()[1] = (unsigned char) KErrNone; |
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365 else |
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366 udp->EndPtr()[1] = (unsigned char) KErrGeneral; // this will lose it's sign :-( |
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367 |
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368 UpdateHeaders(ip4, udp); |
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369 iUpperReceiver->Process(aPdu); |
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370 break; |
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371 |
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372 case KForceFinishedSelection: |
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373 __FLOG(_L("KForceFinishedSelection command")); |
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374 // force subConn into KFinishedSelection State |
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375 Flow()->Progress(KFinishedSelection, KErrNone); |
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376 UpdateHeaders(ip4, udp); |
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377 aPdu.Free(); |
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378 break; |
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379 |
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380 case KForceBinderError: |
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381 __FLOG(_L("KForceBinderError command")); |
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382 // We cannot signal an error whilst in the middle of a send in the TCP/IP stack, |
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383 // as the act of signalling the error will eventually result in the CNifIfBase binder |
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384 // being destructed by the TCP/IP stack whilst we're in the middle of using it. |
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385 // Consequently, we would panic on exit from this routine. So make the call |
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386 // via an asynchronous callback. |
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387 if (!iErrorOneShot.IsActive()) |
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388 { |
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389 iErrorOneShot.Schedule(iUpperControl); |
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390 } |
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391 aPdu.Free(); |
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392 break; |
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393 |
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394 case KColourDataByLinkTierAccessPointId: |
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395 { |
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396 const TProviderInfoExt* providerInfo = static_cast<const TProviderInfoExt*>( |
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397 iLegacyLoopbackSubConnectionFlow.AccessPointConfig().FindExtension( |
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398 STypeId::CreateSTypeId(TProviderInfoExt::EUid, TProviderInfoExt::ETypeId))); |
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399 ASSERT(providerInfo); // Should always be present |
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400 |
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401 // We are going to simply add the access point id to the command byte |
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402 // A test client can then validate that the socket is connected on the expected access point |
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403 __FLOG(_L("KColourDataByAccessPointId command")); |
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404 *(udp->EndPtr()) += static_cast<TUint8>(providerInfo->iProviderInfo.APId()); |
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405 |
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406 // Update the udp headers and forward on |
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407 UpdateHeaders(ip4, udp); |
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408 iUpperReceiver->Process(aPdu); |
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409 } |
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410 break; |
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411 |
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412 default: |
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413 __FLOG(_L("Unknown command - ignoring it")); |
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414 aPdu.Free(); |
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415 // unknown command, just ignore this packet??? |
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416 } |
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417 } |
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418 else |
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419 { |
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420 __FLOG(_L("Standard echo packet")); |
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421 if (iTestSubscriber && !iTestSubscriber->IsEnabled()) |
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422 { |
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423 __FLOG(_L("Bearer not available. Packet dropped.")); |
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424 aPdu.Free(); |
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425 return; |
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426 } |
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427 |
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428 // just echo the packet back to the original sender |
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429 // update the headers (addresses, checksums etc) |
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430 UpdateHeaders(ip4, udp); |
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431 // now process it (pass up the stack) |
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432 iUpperReceiver->Process(aPdu); |
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433 } |
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434 } |
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435 |
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436 TInt CLegacyLoopbackBinder4::GetConfig(TBinderConfig& aConfig) |
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437 /** |
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438 Return IPv4 configuration information. |
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439 |
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440 Called from upper layer. |
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441 |
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442 @param aConfig structure to populate with IPv4 configuration |
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443 */ |
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444 { |
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445 TBinderConfig4* config = TBinderConfig::Cast<TBinderConfig4>(aConfig); |
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446 |
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447 if(config == NULL) |
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448 { |
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449 return KErrNotSupported; |
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450 } |
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451 |
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452 // Setup config |
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453 config->iInfo.iFeatures = KIfCanBroadcast | KIfCanMulticast; |
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454 config->iInfo.iMtu = KLoopbackBearerMTU; |
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455 config->iInfo.iRMtu = KLoopbackBearerMTU; |
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456 config->iInfo.iSpeedMetric = 0; |
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457 |
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458 config->iFamily = KAfInet6; |
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459 |
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460 TUint32 address; |
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461 const TInt KPort = 65; |
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462 |
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463 config->iFamily = KAfInet; |
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464 |
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465 __FLOG_2(_L8("CLegacyLoopbackBinder4 %08x:\tGetConfig(): iLocalAddress %08x"), this, iLocalAddress); |
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466 |
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467 config->iAddress.SetAddress(iLocalAddress); |
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468 config->iAddress.SetPort(KPort); |
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469 |
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470 // network mask |
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471 config->iNetMask.SetAddress(KInetAddrNetMaskC); // 255.255.255.0 |
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472 config->iNetMask.SetPort(KPort); |
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473 |
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474 // broadcast address |
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475 address = iLocalAddressBase + KBroadcastAddressSuffix; |
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476 config->iBrdAddr.SetAddress(address); |
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477 config->iBrdAddr.SetPort(KPort); |
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478 |
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479 // default gateway |
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480 address = iLocalAddressBase + KDefaultGatewayAddressSuffix; |
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481 config->iDefGate.SetAddress(address); |
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482 config->iDefGate.SetPort(KPort); |
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483 |
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484 // primary DNS, just make same as default gateway |
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485 config->iNameSer1.SetAddress(address); |
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486 config->iNameSer1.SetPort(KPort); |
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487 |
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488 // secondary DNS |
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489 address = iLocalAddressBase + KSecondaryDnsAddressSuffix; |
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490 config->iNameSer2.SetAddress(address); |
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491 config->iNameSer2.SetPort(KPort); |
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492 |
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493 return KErrNone; |
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494 } |
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495 |
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496 TInt CLegacyLoopbackBinder4::Control(TUint aLevel, TUint aName, TDes8& aOption) |
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497 /** |
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498 Called from upper layer for special control functionality. |
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499 */ |
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500 { |
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501 (void) aLevel; |
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502 (void) aName; |
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503 (void) aOption; |
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504 __FLOG_3(_L("CLegacyLoopbackBinder4 %08x:\tControl(aLevel %x, aName %x)"), this, aLevel, aName); |
|
505 return KErrNotSupported; |
|
506 } |
|
507 |
|
508 TInt CLegacyLoopbackBinder4::GetName(TDes& aName) |
|
509 /** |
|
510 Called from upper layer to retrieve the binder name. |
|
511 |
|
512 @param aName populated with name |
|
513 @return KErrNone on success, else a system wide error code. |
|
514 */ |
|
515 { |
|
516 // This name matches the NIF-based DummyNif to match any potential |
|
517 // test code expectations on the name. |
|
518 aName.Format(_L("legacy_loopback[0x%08x]"), this); |
|
519 |
|
520 __FLOG_2(_L("CLegacyLoopbackBinder4 %08x:\tGetName(): %S"), this, &aName); |
|
521 |
|
522 return KErrNone; |
|
523 } |
|
524 |
|
525 TInt CLegacyLoopbackBinder4::BlockFlow(MLowerControl::TBlockOption /*aOption*/) |
|
526 { |
|
527 __FLOG_1(_L8("CLegacyLoopbackBinder4 %08x:\tBlockFlow()"), this); |
|
528 |
|
529 return KErrNotSupported; |
|
530 } |
|
531 |
|
532 TBool CLegacyLoopbackBinder4::MatchesUpperControl(ESock::MUpperControl* aUpperControl) const |
|
533 /** |
|
534 Utility function that returns whether this binder is associated with the |
|
535 MUpperControl object passed as argument. |
|
536 |
|
537 @param aUpperControl upper layer to match against |
|
538 @return ETrue on a match else EFalse. |
|
539 */ |
|
540 { |
|
541 return aUpperControl == iUpperControl; |
|
542 } |
|
543 |
|
544 |
|
545 CLegacyLoopbackBinder4::CDrvSender::CDrvSender(TInt aPriority) |
|
546 : CActive(aPriority) |
|
547 { |
|
548 CActiveScheduler::Add(this); |
|
549 __FLOG_OPEN(KNif, KBinder4); |
|
550 } |
|
551 |
|
552 CLegacyLoopbackBinder4::CDrvSender::~CDrvSender() |
|
553 { |
|
554 Cancel(); |
|
555 do |
|
556 { |
|
557 iSendPkt.Free(); |
|
558 } |
|
559 while(iSendQueue.Remove(iSendPkt)); |
|
560 __FLOG_CLOSE; |
|
561 } |
|
562 |
|
563 void CLegacyLoopbackBinder4::CDrvSender::Start(CLegacyLoopbackBinder4* aBinder, RLegacyLoopbackDriver aDrv) |
|
564 { |
|
565 iBinder = aBinder; |
|
566 iDrv = aDrv; |
|
567 } |
|
568 |
|
569 void CLegacyLoopbackBinder4::CDrvSender::RunL() |
|
570 { |
|
571 // Finished with the buffer just sent |
|
572 iSendPkt.Free(); |
|
573 |
|
574 // Send the next packet waiting |
|
575 SendPacket(); |
|
576 } |
|
577 |
|
578 void CLegacyLoopbackBinder4::CDrvSender::DoCancel() |
|
579 { |
|
580 iDrv.SendDataCancel(); |
|
581 } |
|
582 |
|
583 void CLegacyLoopbackBinder4::CDrvSender::SendPacket() |
|
584 { |
|
585 // Fetch packet to send |
|
586 TBool havePktToSend = iSendQueue.Remove(iSendPkt); |
|
587 |
|
588 if(havePktToSend) |
|
589 { |
|
590 RMBuf* sendBuffer = NULL; |
|
591 |
|
592 // If the packet is composed of more than one buffer then we log this and abandon the packet |
|
593 if(iSendPkt.NumBufs() > 1) |
|
594 { |
|
595 __FLOG_VA((_L8("Warning: packet %d bytes %d buffers"), iSendPkt.Length(), iSendPkt.NumBufs() )); |
|
596 iManyBufCount++; |
|
597 |
|
598 // Copy out to a single buffer |
|
599 sendBuffer = RMBuf::Alloc(KLoopbackBearerMTU, iBinder->iAllocator); |
|
600 if(sendBuffer) |
|
601 { |
|
602 sendBuffer->SetLength(0); |
|
603 RMBuf* currentBuf = iSendPkt.First(); |
|
604 while(currentBuf) |
|
605 { |
|
606 TPtr8 srcData(currentBuf->Ptr(), currentBuf->Length(), currentBuf->Length()); |
|
607 sendBuffer->Append(srcData); |
|
608 currentBuf = currentBuf->Next(); |
|
609 } |
|
610 } |
|
611 iSendPkt.Free(); |
|
612 RMBufChain sendChain(sendBuffer); |
|
613 iSendPkt.Assign(sendChain); |
|
614 } |
|
615 else |
|
616 { |
|
617 iOneBufCount++; |
|
618 sendBuffer = iSendPkt.First(); |
|
619 } |
|
620 |
|
621 // Send the buffer |
|
622 if(sendBuffer) |
|
623 { |
|
624 TInt length(sendBuffer->Length()); |
|
625 TPtr8 txPtr(sendBuffer->Ptr(), length, length); |
|
626 iDrv.SendData(iStatus, txPtr); |
|
627 SetActive(); |
|
628 } |
|
629 } |
|
630 } |
|
631 |
|
632 void CLegacyLoopbackBinder4::CDrvSender::QueueForSend(RMBufPacket& aPkt) |
|
633 { |
|
634 aPkt.FreeInfo(); |
|
635 iSendQueue.Append(aPkt); |
|
636 if(!IsActive()) |
|
637 { |
|
638 SendPacket(); |
|
639 } |
|
640 } |
|
641 |
|
642 CLegacyLoopbackBinder4::CDrvReceiver::CDrvReceiver(TInt aPriority) |
|
643 : CActive(aPriority), |
|
644 iRxPtr(NULL, 0) |
|
645 { |
|
646 CActiveScheduler::Add(this); |
|
647 iPond = TCommsBufPondTLSOp::Get(); |
|
648 } |
|
649 |
|
650 CLegacyLoopbackBinder4::CDrvReceiver::~CDrvReceiver() |
|
651 { |
|
652 Cancel(); |
|
653 } |
|
654 |
|
655 void CLegacyLoopbackBinder4::CDrvReceiver::Start(CLegacyLoopbackBinder4* aBinder, RLegacyLoopbackDriver aDrv) |
|
656 { |
|
657 iBinder = aBinder; |
|
658 iDrv = aDrv; |
|
659 RequestReceipt(); |
|
660 } |
|
661 |
|
662 void CLegacyLoopbackBinder4::CDrvReceiver::RequestReceipt() |
|
663 { |
|
664 ASSERT(iPkt.IsEmpty()); |
|
665 RMBuf* buf = RMBuf::Alloc(RLegacyLoopbackDriver::KLoopbackMTU); |
|
666 if(buf) |
|
667 { |
|
668 RMBufQ q(buf); |
|
669 TRAPD(ret, iPkt.CreateL(q)); // need non-leaving overload! |
|
670 if(ret == KErrNone) |
|
671 { |
|
672 iPkt.Pack(); |
|
673 iRxPtr.Set(buf->Ptr(), 0, buf->Size()); |
|
674 } |
|
675 else |
|
676 { |
|
677 // In a real version we could still strive to use the buf, even without the header |
|
678 // But someday we'll be free of having the packet info as the magic extra buffer |
|
679 // on the front & instead pass a concrete type in tandem: type safety & an end to |
|
680 // all this pushing & popping |
|
681 buf->Free(); |
|
682 buf = NULL; |
|
683 } |
|
684 } |
|
685 if(!buf) |
|
686 { |
|
687 // No pre-built packet; copy through descriptor |
|
688 iRxPtr.Set(iDesBuf.MidTPtr(0)); |
|
689 } |
|
690 |
|
691 // Request the next received packet from the driver |
|
692 iDrv.ReceiveData(iStatus, iRxPtr); |
|
693 SetActive(); |
|
694 } |
|
695 |
|
696 void CLegacyLoopbackBinder4::CDrvReceiver::RunL() |
|
697 { |
|
698 TInt ret; |
|
699 if(iPkt.IsEmpty()) |
|
700 { |
|
701 TRAP(ret, iPkt.CreateL(iDesBuf)); // need non-leaving overload! |
|
702 if(ret == KErrNone) |
|
703 { |
|
704 iPkt.Pack(); |
|
705 } |
|
706 } |
|
707 else |
|
708 { |
|
709 ret = KErrNone; |
|
710 } |
|
711 if(ret == KErrNone) |
|
712 { |
|
713 iBinder->ProcessPacket(iPkt); |
|
714 ASSERT(iPkt.IsEmpty()); |
|
715 } |
|
716 RequestReceipt(); |
|
717 } |
|
718 |
|
719 void CLegacyLoopbackBinder4::CDrvReceiver::DoCancel() |
|
720 { |
|
721 iDrv.ReceiveDataCancel(); |
|
722 } |
|
723 |
|
724 |
|
725 // ================================================================================= |
|
726 // |
|
727 // CLegacyLoopbackBinder6 |
|
728 |
|
729 CLegacyLoopbackBinder6::CLegacyLoopbackBinder6(CLegacyLoopbackSubConnectionFlow& aLegacyLoopbackSubConnectionFlow) : iLegacyLoopbackSubConnectionFlow(aLegacyLoopbackSubConnectionFlow) |
|
730 { |
|
731 __FLOG_OPEN(KNif, KBinder6); |
|
732 __FLOG_2(_L8("CLegacyLoopbackBinder6 %08x:\tCLegacyLoopbackBinder6(CLegacyLoopbackSubConnectionFlow& %08x)"), this, &aLegacyLoopbackSubConnectionFlow); |
|
733 } |
|
734 |
|
735 CLegacyLoopbackBinder6::~CLegacyLoopbackBinder6() |
|
736 /** |
|
737 Destroys 'this' |
|
738 */ |
|
739 { |
|
740 __FLOG(_L8("CLegacyLoopbackBinder6:\t~CLegacyLoopbackBinder6()")); |
|
741 __FLOG_CLOSE; |
|
742 } |
|
743 |
|
744 CLegacyLoopbackBinder6* CLegacyLoopbackBinder6::NewL(CLegacyLoopbackSubConnectionFlow& aLegacyLoopbackSubConnectionFlow) |
|
745 { |
|
746 return new (ELeave) CLegacyLoopbackBinder6(aLegacyLoopbackSubConnectionFlow); |
|
747 } |
|
748 |
|
749 void CLegacyLoopbackBinder6::UpdateHeaders(TInet6HeaderIP* aIp6, TInet6HeaderUDP* /*aUdp*/) |
|
750 { |
|
751 // swap over the destination and source addresses |
|
752 TIp6Addr temp; |
|
753 temp = aIp6->SrcAddr(); |
|
754 aIp6->SetSrcAddr(aIp6->DstAddr()); |
|
755 aIp6->SetDstAddr(temp); |
|
756 } |
|
757 |
|
758 MLowerDataSender::TSendResult CLegacyLoopbackBinder6::Send(RMBufChain& aData) |
|
759 /** |
|
760 Send IPv6 data |
|
761 |
|
762 Note: not clear that this is properly supported or used. |
|
763 |
|
764 @param aData data to send |
|
765 */ |
|
766 { |
|
767 __FLOG(_L8("CLegacyLoopbackBinder6:\tSend()")); |
|
768 |
|
769 // Loop the data straight back into the TCP/IP stack |
|
770 ProcessPacket(aData); |
|
771 return ESendAccepted; |
|
772 } |
|
773 |
|
774 MLowerDataSender* CLegacyLoopbackBinder6::Bind(MUpperDataReceiver& aUpperReceiver, MUpperControl& aUpperControl) |
|
775 { |
|
776 __FLOG_2(_L8("CLegacyLoopbackBinder6:\tBind(MUpperDataReceiver %08x, MUpperControl %08x)"), &aUpperReceiver, &aUpperControl); |
|
777 |
|
778 iUpperReceiver = &aUpperReceiver; |
|
779 iUpperControl = &aUpperControl; |
|
780 |
|
781 // Signal upper layer that we are ready |
|
782 BinderReady(); |
|
783 |
|
784 return this; |
|
785 } |
|
786 |
|
787 void CLegacyLoopbackBinder6::BinderReady() |
|
788 /** |
|
789 Signal to upper layer that we are ready |
|
790 */ |
|
791 { |
|
792 __FLOG(_L8("CLegacyLoopbackBinder6:\tBinderReady()")); |
|
793 |
|
794 iUpperControl->StartSending(); |
|
795 } |
|
796 |
|
797 void CLegacyLoopbackBinder6::ProcessPacket(RMBufChain& aPdu) |
|
798 /** |
|
799 Process incoming IPv6 packets. |
|
800 |
|
801 Note: not clear that this is properly supported or used. |
|
802 |
|
803 @param aPdu incoming data packet |
|
804 */ |
|
805 { |
|
806 __FLOG(_L8("CLegacyLoopbackBinder6:\tProcessPacket()")); |
|
807 |
|
808 // this received data has already been looped back... |
|
809 // get the ip header from the RMBufChain |
|
810 TInet6HeaderIP* ip6 = (TInet6HeaderIP*) aPdu.First()->Next()->Ptr(); |
|
811 TInet6HeaderUDP* udp = NULL; |
|
812 |
|
813 if ((TUint)ip6->NextHeader() == KProtocolInetUdp) |
|
814 { |
|
815 // get the udp header as well - assume only udp traffic here |
|
816 udp = (TInet6HeaderUDP*) ip6->EndPtr(); |
|
817 |
|
818 __FLOG_3(_L("CLegacyLoopbackBinder6:\tProcessPacket(...): UDP length %d, src port %d, dst port %d"), |
|
819 udp->Length(), udp->SrcPort(), udp->DstPort()); |
|
820 |
|
821 // depending on the contents, pass it on up thru the stack |
|
822 // or maybe do something else |
|
823 |
|
824 // use the destination port number to decide whether or not the payload is a command |
|
825 TUint dstPort = udp->DstPort(); |
|
826 if (KLegacyLoopbackCmdPort == dstPort) |
|
827 { |
|
828 // let's use the first payload byte as the command byte |
|
829 switch (*(udp->EndPtr())) |
|
830 { |
|
831 case KForceDisconnect: |
|
832 __FLOG(_L("KForceDisconnect command")); |
|
833 // do some action |
|
834 Flow()->Progress(KLinkLayerClosed, KErrCommsLineFail); |
|
835 |
|
836 Flow()->FlowDown(KErrCommsLineFail, MNifIfNotify::EDisconnect); |
|
837 |
|
838 // no return code so all we can do is respond with what we got |
|
839 UpdateHeaders(ip6, udp); |
|
840 iUpperReceiver->Process(aPdu); |
|
841 break; |
|
842 |
|
843 case KForceReconnect: |
|
844 __FLOG(_L("KForceReconnect command")); |
|
845 // do some action |
|
846 Flow()->Progress(KLinkLayerClosed, KErrCommsLineFail); |
|
847 |
|
848 //cause.iReserved=MNifIfNotify::EReconnect; |
|
849 Flow()->FlowDown(KErrCommsLineFail); |
|
850 |
|
851 // no return code so all we can do is respond with what we got |
|
852 UpdateHeaders(ip6, udp); |
|
853 iUpperReceiver->Process(aPdu); |
|
854 break; |
|
855 |
|
856 case KSendNotification: |
|
857 __FLOG(_L("KSendNotification command")); |
|
858 //let's write the result in the next byte of the reply |
|
859 if (Flow()->AgentProvision()->IsDialIn() == KErrNotSupported) |
|
860 udp->EndPtr()[1] = (unsigned char) KErrNone; |
|
861 else |
|
862 udp->EndPtr()[1] = (unsigned char) KErrGeneral; // this will lose it's sign :-( |
|
863 |
|
864 UpdateHeaders(ip6, udp); |
|
865 iUpperReceiver->Process(aPdu); |
|
866 break; |
|
867 |
|
868 |
|
869 default: |
|
870 __FLOG(_L("Unknown command - ignoring it")); |
|
871 break; |
|
872 // unknown command, just ignore this packet??? |
|
873 } |
|
874 return; |
|
875 } |
|
876 |
|
877 } |
|
878 else |
|
879 { |
|
880 __FLOG_2(_L("CLegacyLoopbackBinder6:\tProcessPacket(...): IPv6 length %d, next header %d"), |
|
881 ip6->PayloadLength(), ip6->NextHeader()); |
|
882 } |
|
883 |
|
884 // just echo the packet back to the original sender |
|
885 |
|
886 // update the headers (addresses, checksums etc). If "udp" is non-NULL, then |
|
887 // the UDP ports will be updated as well. |
|
888 UpdateHeaders(ip6, udp); |
|
889 // now process it (pass up the stack) |
|
890 iUpperReceiver->Process(aPdu); |
|
891 } |
|
892 |
|
893 void CLegacyLoopbackBinder6::Unbind(MUpperDataReceiver& aUpperReceiver, MUpperControl& aUpperControl) |
|
894 { |
|
895 static_cast<void>(aUpperReceiver); |
|
896 static_cast<void>(aUpperControl); |
|
897 __FLOG(_L8("CLegacyLoopbackBinder6:\tUnbind()")); |
|
898 |
|
899 ASSERT(&aUpperReceiver == iUpperReceiver); |
|
900 ASSERT(&aUpperControl == iUpperControl); |
|
901 iUpperReceiver = NULL; |
|
902 iUpperControl = NULL; |
|
903 } |
|
904 |
|
905 TInt CLegacyLoopbackBinder6::GetName(TDes& aName) |
|
906 /** |
|
907 Called from upper layer to retrieve the binder name. |
|
908 |
|
909 @param aName populated with name |
|
910 @return KErrNone on success, else a system wide error code. |
|
911 */ |
|
912 { |
|
913 __FLOG(_L8("CLegacyLoopbackBinder6:\tGetName()")); |
|
914 |
|
915 // This name matches the NIF-based DummyNif to match any potential |
|
916 // test code expectations on the name. |
|
917 aName.Format(_L("legacy_loopback6[0x%08x]"), this); |
|
918 |
|
919 return KErrNone; |
|
920 } |
|
921 |
|
922 TInt CLegacyLoopbackBinder6::BlockFlow(MLowerControl::TBlockOption /*aOption*/) |
|
923 { |
|
924 __FLOG(_L8("CLegacyLoopbackBinder6:\tBlockFlow()")); |
|
925 |
|
926 return KErrNotSupported; |
|
927 } |
|
928 |
|
929 void CLegacyLoopbackBinder6::StaticDnsConfiguration(TBinderConfig6& aConfig) |
|
930 { |
|
931 __FLOG(_L8("CLegacyLoopbackBinder6:\tStaticDnsConfiguration()")); |
|
932 |
|
933 const TLegacyLoopbackIp6Provision* ip6Provision = Flow()->Ip6Provision(); |
|
934 |
|
935 if (!ip6Provision->Ip6DNSAddrFromServer()) |
|
936 { |
|
937 aConfig.iNameSer1.SetAddress(ip6Provision->Ip6NameServer1()); |
|
938 aConfig.iNameSer2.SetAddress(ip6Provision->Ip6NameServer2()); |
|
939 } |
|
940 else |
|
941 { |
|
942 // Ensure that static DNS addresses are set as unspecified, |
|
943 // so they are not used in Control(KSoIfConfig). |
|
944 aConfig.iNameSer1.SetAddress(KInet6AddrNone); |
|
945 aConfig.iNameSer2.SetAddress(KInet6AddrNone); |
|
946 } |
|
947 } |
|
948 |
|
949 TInt CLegacyLoopbackBinder6::GetConfig(TBinderConfig& aConfig) |
|
950 /** |
|
951 Return IPv6 configuration information. |
|
952 |
|
953 Called from upper layer. |
|
954 |
|
955 @param aConfig structure to populate with IPv6 configuration |
|
956 */ |
|
957 { |
|
958 TBinderConfig6* config = TBinderConfig::Cast<TBinderConfig6>(aConfig); |
|
959 |
|
960 if(config == NULL) |
|
961 { |
|
962 return KErrNotSupported; |
|
963 } |
|
964 |
|
965 // Setup config |
|
966 config->iInfo.iFeatures = KIfCanBroadcast | KIfCanMulticast;; |
|
967 config->iInfo.iMtu = KLoopbackBearerMTU; |
|
968 config->iInfo.iRMtu = KLoopbackBearerMTU; |
|
969 config->iInfo.iSpeedMetric = 0; |
|
970 |
|
971 // Setup addresses |
|
972 |
|
973 config->iFamily = KAfInet6; |
|
974 |
|
975 // Local ID |
|
976 |
|
977 TInt addr64 = 0x80; |
|
978 TE64Addr localAddr(addr64); |
|
979 TEui64Addr* id = (TEui64Addr*) &config->iLocalId; |
|
980 |
|
981 id->Init(); |
|
982 id->SetAddress(localAddr); |
|
983 |
|
984 // Remote ID |
|
985 addr64 = 0x81; |
|
986 TE64Addr remoteAddr(addr64); |
|
987 id = (TEui64Addr*) &config->iRemoteId; |
|
988 |
|
989 id->Init(); |
|
990 id->SetAddress(remoteAddr); |
|
991 |
|
992 // Setup static DNS address if required |
|
993 StaticDnsConfiguration(*config); |
|
994 |
|
995 return KErrNone; |
|
996 } |
|
997 |
|
998 TInt CLegacyLoopbackBinder6::Control(TUint aLevel, TUint aName, TDes8& aOption) |
|
999 { |
|
1000 (void) aLevel; |
|
1001 (void) aName; |
|
1002 (void) aOption; |
|
1003 __FLOG_2(_L("CLegacyLoopbackBinder6:\tControl(aLevel %x, aName %x, ...)"), aLevel, aName); |
|
1004 return KErrNotSupported; |
|
1005 } |
|
1006 |
|
1007 // |
|
1008 // Utilities |
|
1009 // |
|
1010 |
|
1011 TBool CLegacyLoopbackBinder6::MatchesUpperControl(ESock::MUpperControl* aUpperControl) const |
|
1012 /** |
|
1013 Utility function that returns whether this binder is associated with the |
|
1014 MUpperControl object passed as argument. |
|
1015 |
|
1016 @param aUpperControl upper layer to match against |
|
1017 @return ETrue on a match else EFalse. |
|
1018 */ |
|
1019 { |
|
1020 return aUpperControl == iUpperControl; |
|
1021 } |
|
1022 |
|
1023 // |
|
1024 // Async error callback |
|
1025 // |
|
1026 // Used to schedule asynchronous signalling of a binder error to upper flow in circumstances |
|
1027 // where a direct call is not possible (e.g. in the middle of a TCP/IP send as the binder |
|
1028 // may disappear underneath the TCP/IP stack). |
|
1029 |
|
1030 CLegacyLoopbackErrorOneShot::CLegacyLoopbackErrorOneShot() |
|
1031 : CAsyncOneShot(EPriorityStandard) |
|
1032 { |
|
1033 } |
|
1034 |
|
1035 void CLegacyLoopbackErrorOneShot::Schedule(MUpperControl* aUpperControl) |
|
1036 { |
|
1037 iUpperControl = aUpperControl; |
|
1038 Call(); |
|
1039 } |
|
1040 |
|
1041 void CLegacyLoopbackErrorOneShot::RunL() |
|
1042 { |
|
1043 iUpperControl->Error(KErrCommsLineFail); |
|
1044 } |
|
1045 |
|
1046 |
|
1047 CLegacyLoopbackFlowTestingSubscriber::CLegacyLoopbackFlowTestingSubscriber(CLegacyLoopbackSubConnectionFlow& aFlow, TUint aApId) |
|
1048 : CActive(0), |
|
1049 iFlow(aFlow), |
|
1050 iApId(aApId) |
|
1051 { |
|
1052 } |
|
1053 |
|
1054 /*static*/ TBool CLegacyLoopbackFlowTestingSubscriber::ShouldRun(TUint aApId) |
|
1055 { |
|
1056 RProperty property; |
|
1057 TInt result = property.Attach(KLegacyLoopbackTestingPubSubUid, aApId); |
|
1058 if(result == KErrNone) |
|
1059 { |
|
1060 TInt propertyValue; |
|
1061 result = property.Get(propertyValue); |
|
1062 if(result == KErrNone) |
|
1063 { |
|
1064 return ETrue; |
|
1065 } |
|
1066 } |
|
1067 return EFalse; |
|
1068 } |
|
1069 |
|
1070 void CLegacyLoopbackFlowTestingSubscriber::ConstructL() |
|
1071 { |
|
1072 CActiveScheduler::Add(this); |
|
1073 // __DECLARE_NAME(_S("CAvailabilityTestingSubscriber")); |
|
1074 |
|
1075 TInt result = iProperty.Attach(KLegacyLoopbackTestingPubSubUid, iApId); |
|
1076 ASSERT(result == KErrNone); |
|
1077 |
|
1078 RunL(); |
|
1079 } |
|
1080 |
|
1081 void CLegacyLoopbackFlowTestingSubscriber::RunL() |
|
1082 { |
|
1083 // .. and repeat.. |
|
1084 iProperty.Subscribe(iStatus); |
|
1085 |
|
1086 TInt publishedValue; |
|
1087 TInt result = iProperty.Get(publishedValue); |
|
1088 ASSERT(result == KErrNone); |
|
1089 |
|
1090 TAvailabilityStatus av(publishedValue); |
|
1091 if (av.Score()) |
|
1092 { |
|
1093 iIsEnabled = ETrue; |
|
1094 iFlow.iDisableStart = EFalse; |
|
1095 } |
|
1096 else |
|
1097 { |
|
1098 iIsEnabled = EFalse; |
|
1099 iFlow.iDisableStart = ETrue; |
|
1100 } |
|
1101 |
|
1102 SetActive(); |
|
1103 } |
|
1104 |
|
1105 void CLegacyLoopbackFlowTestingSubscriber::DoCancel() |
|
1106 { |
|
1107 iProperty.Cancel(); |
|
1108 } |
|
1109 |
|
1110 /*virtual*/ CLegacyLoopbackFlowTestingSubscriber::~CLegacyLoopbackFlowTestingSubscriber() |
|
1111 { |
|
1112 this->Cancel(); // object must be stoppable by descruction due to cleanup restrictions |
|
1113 iProperty.Close(); |
|
1114 } |
|
1115 |
|
1116 |
|
1117 |