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1 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Name : CSIPFeatureSet.cpp |
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15 // Part of : SIP Client Resolver |
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16 // Version : 1.0 |
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17 // |
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18 |
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19 |
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20 |
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21 #include "CSIPFeatureSet.h" |
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22 #include "CSIPBooleanFeatureTag.h" |
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23 #include "CSIPNumericFeatureTag.h" |
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24 #include "CSIPStringFeatureTag.h" |
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25 #include "CSIPTokenFeatureTag.h" |
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26 #include "sipacceptcontactheader.h" |
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27 #include "TTagValueListParser.h" |
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28 #include "sipstrings.h" |
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29 #include "sipstrconsts.h" |
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30 |
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31 _LIT8(KTrue, "TRUE"); |
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32 _LIT8(KFalse, "FALSE"); |
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33 |
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34 // ----------------------------------------------------------------------------- |
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35 // CSIPFeatureSet::NewL |
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36 // ----------------------------------------------------------------------------- |
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37 // |
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38 CSIPFeatureSet* CSIPFeatureSet::NewL() |
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39 { |
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40 CSIPFeatureSet* self = CSIPFeatureSet::NewLC(); |
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41 CleanupStack::Pop(self); |
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42 return self; |
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43 } |
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44 |
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45 // ----------------------------------------------------------------------------- |
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46 // CSIPFeatureSet::NewLC |
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47 // ----------------------------------------------------------------------------- |
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48 // |
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49 CSIPFeatureSet* CSIPFeatureSet::NewLC() |
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50 { |
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51 CSIPFeatureSet* self = new(ELeave)CSIPFeatureSet; |
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52 CleanupStack::PushL(self); |
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53 return self; |
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54 } |
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55 |
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56 // ----------------------------------------------------------------------------- |
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57 // CSIPFeatureSet::NewL |
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58 // ----------------------------------------------------------------------------- |
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59 // |
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60 CSIPFeatureSet* CSIPFeatureSet::NewL( |
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61 const CSIPAcceptContactHeader& aAcceptContactHeader) |
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62 { |
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63 CSIPFeatureSet* self = CSIPFeatureSet::NewLC(aAcceptContactHeader); |
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64 CleanupStack::Pop(self); |
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65 return self; |
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66 } |
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67 |
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68 // ----------------------------------------------------------------------------- |
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69 // CSIPFeatureSet::NewLC |
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70 // ----------------------------------------------------------------------------- |
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71 // |
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72 CSIPFeatureSet* CSIPFeatureSet::NewLC( |
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73 const CSIPAcceptContactHeader& aAcceptContactHeader) |
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74 { |
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75 CSIPFeatureSet* self = new(ELeave)CSIPFeatureSet; |
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76 CleanupStack::PushL(self); |
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77 self->ConstructL(aAcceptContactHeader); |
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78 return self; |
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79 } |
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80 |
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81 // ----------------------------------------------------------------------------- |
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82 // CSIPFeatureSet::CSIPFeatureSet |
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83 // ----------------------------------------------------------------------------- |
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84 // |
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85 CSIPFeatureSet::CSIPFeatureSet() |
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86 { |
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87 } |
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88 |
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89 // ----------------------------------------------------------------------------- |
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90 // CSIPFeatureSet::ConstructL |
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91 // ----------------------------------------------------------------------------- |
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92 // |
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93 void CSIPFeatureSet::ConstructL( |
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94 const CSIPAcceptContactHeader& aAcceptContactHeader) |
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95 { |
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96 AddFeaturesL(aAcceptContactHeader); |
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97 } |
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98 |
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99 // ----------------------------------------------------------------------------- |
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100 // CSIPFeatureSet::~CSIPFeatureSet |
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101 // ----------------------------------------------------------------------------- |
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102 // |
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103 CSIPFeatureSet::~CSIPFeatureSet() |
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104 { |
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105 iFeatureTags.ResetAndDestroy(); |
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106 } |
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107 |
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108 // ----------------------------------------------------------------------------- |
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109 // CSIPFeatureSet::AddFeaturesL |
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110 // ----------------------------------------------------------------------------- |
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111 // |
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112 void CSIPFeatureSet::AddFeaturesL( |
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113 const CSIPAcceptContactHeader& aAcceptContactHeader) |
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114 { |
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115 TInt paramCount = aAcceptContactHeader.ParamCount(); |
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116 for(TInt i = 0; i < paramCount; i++) |
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117 { |
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118 RStringF name; |
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119 User::LeaveIfError(aAcceptContactHeader.Param(i,name)); |
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120 CleanupClosePushL(name); |
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121 if (IsFeatureParamName(name)) |
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122 { |
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123 RStringF value = aAcceptContactHeader.ParamValue(name); |
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124 AddFeatureTagsL(name,value.DesC()); |
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125 } |
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126 CleanupStack::PopAndDestroy(1); // name |
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127 } |
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128 } |
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129 |
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130 // ----------------------------------------------------------------------------- |
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131 // CSIPFeatureSet::Require |
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132 // ----------------------------------------------------------------------------- |
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133 // |
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134 TBool CSIPFeatureSet::Require() const |
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135 { |
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136 return iRequire; |
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137 } |
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138 |
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139 // ----------------------------------------------------------------------------- |
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140 // CSIPFeatureSet::CalculateScore |
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141 // ----------------------------------------------------------------------------- |
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142 // |
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143 TInt CSIPFeatureSet::CalculateScore(const CSIPFeatureSet& aFeatureSet) const |
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144 { |
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145 TInt score = 0; |
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146 for(TInt i = 0; i < aFeatureSet.iFeatureTags.Count(); i++) |
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147 { |
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148 const CSIPFeatureTag* otherTag = aFeatureSet.iFeatureTags[i]; |
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149 for(TInt j = 0; j < iFeatureTags.Count(); j++) |
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150 { |
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151 const CSIPFeatureTag* myTag = iFeatureTags[j]; |
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152 if (myTag->Match(*otherTag)) |
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153 { |
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154 score++; |
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155 } |
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156 } |
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157 } |
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158 if (aFeatureSet.Require() && score < aFeatureSet.iFeatureTags.Count()) |
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159 { |
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160 // All feature tags should match if require-tag is present |
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161 score = 0; |
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162 } |
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163 return score; |
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164 } |
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165 |
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166 // ----------------------------------------------------------------------------- |
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167 // CSIPFeatureSet::AddFeatureTagsL |
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168 // ----------------------------------------------------------------------------- |
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169 // |
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170 void CSIPFeatureSet::AddFeatureTagsL( |
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171 RStringF aName, |
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172 const TDesC8& aValue) |
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173 { |
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174 if (aValue.Length() > 0) |
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175 { |
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176 TPtrC8 value; |
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177 RemoveQuotesL(aValue,value); |
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178 if (value[0] == '<') |
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179 { |
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180 CSIPFeatureTag* fTag = CSIPStringFeatureTag::NewLC(aName,value); |
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181 iFeatureTags.AppendL(fTag); |
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182 CleanupStack::Pop(fTag); |
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183 } |
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184 else |
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185 { |
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186 TTagValueListParser parser; |
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187 parser.Parse(value); |
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188 while (!parser.Eos()) |
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189 { |
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190 TPtrC8 segment; |
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191 User::LeaveIfError(parser.GetNext(segment)); |
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192 AddFeatureTagL(aName,segment); |
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193 } |
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194 } |
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195 } |
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196 else |
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197 { |
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198 AddBooleanFeatureTagL(aName,EFalse,ETrue); |
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199 } |
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200 } |
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201 |
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202 // ----------------------------------------------------------------------------- |
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203 // CSIPFeatureSet::AddFeatureTagL |
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204 // ----------------------------------------------------------------------------- |
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205 // |
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206 void CSIPFeatureSet::AddFeatureTagL( |
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207 RStringF aName, |
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208 const TDesC8& aValue) |
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209 { |
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210 TBool negation = EFalse; |
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211 TLex8 lex(aValue); |
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212 TChar chr = lex.Get(); |
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213 if (chr == '!') |
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214 { |
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215 negation = ETrue; |
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216 chr = lex.Get(); |
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217 } |
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218 if (chr == '#') |
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219 { |
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220 CSIPFeatureTag* fTag = |
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221 CSIPNumericFeatureTag::NewLC(aName,negation,lex.Remainder()); |
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222 iFeatureTags.AppendL(fTag); |
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223 CleanupStack::Pop(fTag); |
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224 } |
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225 else |
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226 { |
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227 lex.UnGet(); |
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228 TPtrC8 value(lex.Remainder()); |
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229 if (value.CompareF(KTrue) == 0 || |
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230 value.CompareF(KFalse) == 0 || |
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231 value.Length() == 0) |
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232 { |
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233 TBool boolVal = !(value.CompareF(KFalse) == 0); |
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234 AddBooleanFeatureTagL(aName,negation,boolVal); |
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235 } |
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236 else |
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237 { |
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238 CSIPFeatureTag* fTag = |
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239 CSIPTokenFeatureTag::NewLC(aName,negation,value); |
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240 iFeatureTags.AppendL(fTag); |
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241 CleanupStack::Pop(fTag); |
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242 } |
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243 } |
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244 } |
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245 |
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246 // ----------------------------------------------------------------------------- |
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247 // CSIPFeatureSet::AddBooleanFeatureTagL |
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248 // ----------------------------------------------------------------------------- |
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249 // |
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250 void CSIPFeatureSet::AddBooleanFeatureTagL( |
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251 RStringF aName, |
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252 TBool aNegation, |
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253 TBool aValue) |
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254 { |
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255 if (aName == SIPStrings::StringF(SipStrConsts::ERequire)) |
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256 { |
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257 iRequire = ETrue; |
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258 } |
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259 else if (aName == SIPStrings::StringF(SipStrConsts::EExplicit)) |
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260 { |
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261 // explicit-parameter not handled. |
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262 // It must not be added to feature set |
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263 } |
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264 else |
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265 { |
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266 CSIPFeatureTag* fTag = |
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267 CSIPBooleanFeatureTag::NewLC(aName,aNegation,aValue); |
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268 iFeatureTags.AppendL(fTag); |
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269 CleanupStack::Pop(fTag); |
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270 } |
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271 } |
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272 |
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273 // ----------------------------------------------------------------------------- |
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274 // CSIPFeatureSet::RemoveQuotesL |
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275 // ----------------------------------------------------------------------------- |
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276 // |
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277 void CSIPFeatureSet::RemoveQuotesL( |
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278 const TDesC8& aValue, |
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279 TPtrC8& aWithoutQuotes) const |
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280 { |
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281 __ASSERT_ALWAYS(aValue.Length() > 0, User::Leave(KErrCorrupt)); |
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282 TLex8 lex(aValue); |
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283 lex.SkipSpace(); |
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284 TPtrC8 remainder(lex.Remainder()); |
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285 if (StartsAndEndsWithQuotes(remainder)) |
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286 { |
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287 lex.Get(); // Skip the opening quote |
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288 remainder.Set(lex.Remainder()); |
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289 aWithoutQuotes.Set(remainder.Left(remainder.Length()-1)); |
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290 } |
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291 else |
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292 { |
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293 aWithoutQuotes.Set(aValue); |
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294 } |
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295 } |
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296 |
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297 // ----------------------------------------------------------------------------- |
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298 // CSIPFeatureSet::StartsAndEndsWithQuotes |
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299 // ----------------------------------------------------------------------------- |
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300 // |
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301 TBool CSIPFeatureSet::StartsAndEndsWithQuotes(const TDesC8& aValue) const |
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302 { |
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303 // trim and check quotes |
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304 TLex8 lex(aValue); |
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305 lex.SkipSpace(); |
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306 TPtrC8 trimmedVal(lex.Remainder()); |
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307 const TInt KTwoQuotesLength = 2; |
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308 if (trimmedVal.Length() < KTwoQuotesLength) |
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309 { |
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310 return EFalse; |
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311 } |
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312 if (trimmedVal.Locate('"') != 0) |
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313 { |
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314 return EFalse; |
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315 } |
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316 if (trimmedVal.LocateReverse('"') != trimmedVal.Length()-1) |
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317 { |
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318 return EFalse; |
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319 } |
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320 return ETrue; |
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321 } |
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322 |
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323 // ----------------------------------------------------------------------------- |
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324 // CSIPFeatureSet::IsFeatureParamName |
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325 // ----------------------------------------------------------------------------- |
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326 // |
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327 TBool CSIPFeatureSet::IsFeatureParamName(RStringF aName) const |
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328 { |
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329 if (aName == SIPStrings::StringF(SipStrConsts::EAudio) || |
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330 aName == SIPStrings::StringF(SipStrConsts::EAutomata) || |
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331 aName == SIPStrings::StringF(SipStrConsts::EClass) || |
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332 aName == SIPStrings::StringF(SipStrConsts::EDuplex) || |
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333 aName == SIPStrings::StringF(SipStrConsts::EData) || |
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334 aName == SIPStrings::StringF(SipStrConsts::EControl) || |
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335 aName == SIPStrings::StringF(SipStrConsts::EMobility) || |
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336 aName == SIPStrings::StringF(SipStrConsts::EDescription) || |
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337 aName == SIPStrings::StringF(SipStrConsts::EEvents) || |
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338 aName == SIPStrings::StringF(SipStrConsts::EPriority) || |
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339 aName == SIPStrings::StringF(SipStrConsts::EMethods) || |
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340 aName == SIPStrings::StringF(SipStrConsts::ESchemes) || |
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341 aName == SIPStrings::StringF(SipStrConsts::EApplication) || |
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342 aName == SIPStrings::StringF(SipStrConsts::EVideo) || |
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343 aName == SIPStrings::StringF(SipStrConsts::ELanguage) || |
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344 aName == SIPStrings::StringF(SipStrConsts::EType) || |
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345 aName == SIPStrings::StringF(SipStrConsts::EIsfocus) || |
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346 aName == SIPStrings::StringF(SipStrConsts::EActor) || |
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347 aName == SIPStrings::StringF(SipStrConsts::EText) || |
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348 aName == SIPStrings::StringF(SipStrConsts::EExtensions) || |
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349 aName == SIPStrings::StringF(SipStrConsts::ERequire) || |
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350 aName == SIPStrings::StringF(SipStrConsts::EExplicit)) |
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351 { |
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352 return ETrue; |
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353 } |
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354 TLex8 lex(aName.DesC()); |
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355 lex.SkipSpace(); |
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356 return (lex.Peek() == '+'); |
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357 } |