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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 // |
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15 |
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16 #include <bluetooth/logger.h> |
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17 |
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18 #include "l2capSigPacketInformation.h" |
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19 #include "l2capSignalHandler.h" |
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20 #include "l2constants.h" |
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21 |
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22 #ifdef __FLOG_ACTIVE |
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23 _LIT8(KLogComponent, LOG_COMPONENT_L2CAP); |
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24 #endif |
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25 |
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26 // INFORMATION REQUEST COMMAND |
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27 |
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28 /*static*/ HInformationRequest* HInformationRequest::New(TInfoType aInfoType, |
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29 TUint8 aRTXTimerDuration, |
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30 TUint16 aERTXTimerDuration) |
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31 { |
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32 LOG_STATIC_FUNC |
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33 HInformationRequest* cmd = NULL; |
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34 RMBufChain buf; |
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35 TRAPD(rerr, buf.AllocL(KInformationRequestLength)); |
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36 if(rerr == KErrNone) |
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37 { |
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38 cmd = new HInformationRequest(buf, aRTXTimerDuration, aERTXTimerDuration); |
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39 if(cmd) |
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40 { |
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41 // Setup message contents. |
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42 cmd->SetCode(EInformationRequest); |
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43 cmd->SetID(KUninitialisedID); |
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44 cmd->WriteDataLength(); |
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45 |
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46 cmd->SetInfoType(aInfoType); |
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47 } |
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48 else |
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49 { |
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50 // Free the allocated buffer. |
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51 buf.Free(); |
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52 } |
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53 } |
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54 return cmd; |
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55 } |
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56 |
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57 /** |
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58 Verifies that the buffer contains a structurally correct command. |
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59 This does not ensure that the content of the command is semantically valid. |
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60 |
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61 @param aCommmand A new HL2CapCommand if the buffer contains a structurally valid command. |
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62 @param aBuffer The buffer containing the command |
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63 @return KErrNone if the command if created. |
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64 KErrNoMemory if the command structure is valid but cannot be created. |
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65 KErrCorrupt if the command structure is invalid. |
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66 */ |
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67 TInt HInformationRequest::NewCommandIfValid(RMBufChain& aBuffer, HL2CapCommand*& aCommand) |
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68 { |
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69 LOG_STATIC_FUNC |
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70 // Firstly align the MBufChain. The maximum size we can align the |
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71 // MBufChain to is the maximum MBuf size |
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72 __ASSERT_COMPILE(KInformationRequestLength <= KMBufSmallSize); |
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73 |
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74 TInt length = aBuffer.Length(); |
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75 if(length == KInformationRequestLength) |
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76 { |
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77 // Don't need to check result as we know that the MBufChain contains |
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78 // at least length bytes as we asked first. |
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79 (void)aBuffer.Align(length); |
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80 aCommand = new HInformationRequest(aBuffer); |
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81 if(aCommand) |
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82 { |
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83 return KErrNone; |
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84 } |
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85 else |
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86 { |
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87 return KErrNoMemory; |
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88 } |
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89 } |
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90 else |
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91 { |
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92 // Dodge length! |
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93 return KErrCorrupt; |
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94 } |
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95 } |
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96 |
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97 HInformationRequest::HInformationRequest(RMBufChain& aCommand, |
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98 TUint8 aRTXTimerDuration, |
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99 TUint16 aERTXTimerDuration) |
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100 : HL2CapCommand(aCommand, aRTXTimerDuration, aERTXTimerDuration) |
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101 { |
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102 LOG_FUNC |
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103 } |
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104 |
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105 HInformationRequest::~HInformationRequest() |
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106 { |
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107 LOG_FUNC |
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108 } |
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109 |
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110 TBool HInformationRequest::ProcessCommand(CL2CapSignalHandler& aSignalHandler) |
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111 { |
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112 LOG_FUNC |
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113 if(aSignalHandler.HandleInformationRequest(this)) |
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114 { |
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115 // The command has been handled. Delete it. |
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116 delete this; |
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117 return ETrue; |
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118 } |
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119 else |
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120 { |
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121 return EFalse; |
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122 } |
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123 } |
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124 |
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125 |
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126 |
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127 |
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128 // INFORMATION RESPONSE COMMAND |
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129 //Constructor to deal command coming in from remote side |
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130 // |
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131 HInformationResponse::HInformationResponse(RMBufChain& aCommand) |
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132 : HL2CapCommand(aCommand) |
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133 { |
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134 LOG_FUNC |
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135 } |
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136 |
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137 /*static*/ HInformationResponse* HInformationResponse::New(TInfoType aInfoType, TInfoReqResult aResult, TUint8 aId, TUint32 aExtendedFeatures) |
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138 { |
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139 LOG_STATIC_FUNC |
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140 HInformationResponse* cmd = NULL; |
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141 RMBufChain buf; |
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142 TRAPD(rerr, buf.AllocL(KInformationResponseMinLength + KExtendedFeatureMaskLength)); |
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143 if(rerr == KErrNone) |
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144 { |
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145 cmd = new HInformationResponse(buf); |
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146 if(cmd) |
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147 { |
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148 // Setup message contents. |
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149 cmd->SetCode(EInformationResponse); |
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150 cmd->SetID(aId); |
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151 cmd->WriteDataLength(); |
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152 |
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153 cmd->SetInfoType(aInfoType); |
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154 cmd->SetResult(aResult); |
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155 |
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156 cmd->SetExtendedFeatureMask(aExtendedFeatures); |
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157 } |
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158 else |
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159 { |
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160 // Free the allocated buffer. |
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161 buf.Free(); |
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162 } |
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163 } |
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164 return cmd; |
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165 } |
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166 |
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167 /*static*/ HInformationResponse* HInformationResponse::New(TInfoType aInfoType, TInfoReqResult aResult, TUint8 aId) |
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168 { |
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169 LOG_STATIC_FUNC |
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170 HInformationResponse* cmd = NULL; |
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171 RMBufChain buf; |
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172 TRAPD(rerr, buf.AllocL(KInformationResponseMinLength)); |
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173 if(rerr == KErrNone) |
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174 { |
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175 cmd = new HInformationResponse(buf); |
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176 if(cmd) |
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177 { |
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178 // Setup message contents. |
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179 cmd->SetCode(EInformationResponse); |
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180 cmd->SetID(aId); |
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181 cmd->WriteDataLength(); |
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182 |
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183 cmd->SetInfoType(aInfoType); |
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184 cmd->SetResult(aResult); |
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185 } |
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186 else |
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187 { |
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188 // Free the allocated buffer. |
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189 buf.Free(); |
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190 } |
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191 } |
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192 return cmd; |
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193 } |
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194 |
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195 /** |
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196 Verifies that the buffer contains a structurally correct command. |
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197 This does not ensure that the content of the command is semantically valid. |
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198 |
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199 @param aCommmand A new HL2CapCommand if the buffer contains a structurally valid command. |
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200 @param aBuffer The buffer containing the command |
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201 @return KErrNone if the command if created. |
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202 KErrNoMemory if the command structure is valid but cannot be created. |
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203 KErrCorrupt if the command structure is invalid. |
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204 */ |
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205 TInt HInformationResponse::NewCommandIfValid(RMBufChain& aBuffer, HL2CapCommand*& aCommand) |
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206 { |
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207 LOG_STATIC_FUNC |
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208 // Firstly align the MBufChain. The maximum size we can align the |
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209 // MBufChain to is the maximum MBuf size |
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210 __ASSERT_COMPILE(KInformationResponseMaxLength <= KMBufSmallSize); |
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211 |
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212 TInt length = aBuffer.Length(); |
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213 if((length >= KInformationResponseMinLength) && (length <= KInformationResponseMaxLength)) |
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214 { |
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215 // Don't need to check result as we know that the MBufChain contains |
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216 // at least length bytes as we asked first. |
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217 (void)aBuffer.Align(length); |
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218 } |
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219 else |
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220 { |
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221 // Dodge length! |
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222 return KErrCorrupt; |
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223 } |
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224 |
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225 if(VerifyStructure(aBuffer)) |
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226 { |
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227 // Top! The structure's fine, go ahead and create the command. |
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228 aCommand = new HInformationResponse(aBuffer); |
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229 if(aCommand) |
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230 { |
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231 return KErrNone; |
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232 } |
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233 else |
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234 { |
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235 return KErrNoMemory; |
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236 } |
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237 } |
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238 else |
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239 { |
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240 // We'll not have any of this nonsense! |
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241 return KErrCorrupt; |
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242 } |
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243 } |
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244 |
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245 /* static */ TBool HInformationResponse::VerifyStructure(const RMBufChain& aCommand) |
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246 { |
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247 LOG_STATIC_FUNC |
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248 TBool valid = ETrue; |
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249 TInfoType infoType = static_cast<TInfoType>(GetLittleEndian16(KInfoTypeOffset, aCommand)); |
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250 TInfoReqResult result = static_cast<TInfoReqResult>(GetLittleEndian16(KResultOffset, aCommand)); |
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251 |
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252 if(result == ESuccess) |
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253 { |
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254 switch(infoType) |
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255 { |
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256 case EConnectionlessMTU: |
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257 { |
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258 if(aCommand.Length() != KInformationResponseMinLength + KConnectionlessMTULength) |
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259 { |
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260 valid = EFalse; |
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261 } |
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262 |
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263 break; |
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264 } |
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265 case EExtendedFeaturesSupported: |
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266 { |
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267 if(aCommand.Length() != KInformationResponseMinLength + KExtendedFeatureMaskLength) |
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268 { |
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269 valid = EFalse; |
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270 } |
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271 break; |
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272 } |
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273 default: |
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274 { |
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275 // Unknown info type |
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276 // Although this is dodgy as the info type should be copied from the request |
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277 // we accept this for the sake of interop with legacy devices that deal |
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278 // incorrectly with extended features. |
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279 break; |
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280 } |
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281 }; |
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282 } |
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283 else if(result == ENotsupported) |
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284 { |
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285 if(aCommand.Length() != KInformationResponseMinLength) |
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286 { |
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287 valid = EFalse; |
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288 } |
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289 } |
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290 else |
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291 { |
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292 valid = EFalse; |
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293 } |
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294 |
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295 return valid; |
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296 } |
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297 |
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298 HInformationResponse::~HInformationResponse() |
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299 { |
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300 LOG_FUNC |
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301 } |
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302 |
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303 TBool HInformationResponse::ProcessCommand(CL2CapSignalHandler& aSignalHandler) |
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304 { |
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305 LOG_FUNC |
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306 if(aSignalHandler.HandleInformationResponse(this)) |
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307 { |
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308 // The command has been handled. Delete it. |
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309 delete this; |
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310 return ETrue; |
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311 } |
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312 else |
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313 { |
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314 return EFalse; |
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315 } |
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316 } |
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317 |
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318 TL2CapEntityInfo HInformationResponse::RemoteExtendedFeatureMask() const |
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319 { |
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320 LOG_FUNC |
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321 TL2CapEntityInfo peerExtendedFeatures; |
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322 |
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323 // Check that the features are supported, and the message is a valid length. If not return the default |
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324 // remote entity information. |
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325 if(InfoType() == EExtendedFeaturesSupported && Result() == ESuccess) |
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326 { |
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327 TUint32 featureMask = GetLittleEndian32(KDataOffset, iCommand); |
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328 |
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329 if(featureMask & EFlowControlMode) |
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330 { |
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331 peerExtendedFeatures.SetSupportFlowControl(); |
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332 } |
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333 |
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334 if(featureMask & ERetransmissionMode) |
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335 { |
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336 peerExtendedFeatures.SetSupportRetranmission(); |
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337 } |
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338 |
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339 if(featureMask & EBiDirectionalQOS) |
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340 { |
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341 peerExtendedFeatures.SetSupportBiDirectionalQos(); |
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342 } |
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343 |
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344 if(featureMask & EEnhancedRetransmissionMode) |
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345 { |
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346 peerExtendedFeatures.SetSupportEnhancedRetransmissionMode(); |
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347 } |
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348 |
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349 if(featureMask & EStreamingMode) |
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350 { |
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351 peerExtendedFeatures.SetSupportStreamingMode(); |
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352 } |
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353 |
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354 if(featureMask & EFCSOption) |
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355 { |
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356 peerExtendedFeatures.SetSupportFCSOption(); |
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357 } |
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358 |
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359 peerExtendedFeatures.SetLinkInfoState(EL2CapEntityInfoDefined); |
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360 } |
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361 |
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362 return peerExtendedFeatures; |
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363 } |
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364 |