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1 /* |
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2 * Copyright (c) 2005 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: Represents an SRTP stream. |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 |
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21 // INCLUDES |
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22 #include "srtpstream.h" |
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23 #include "srtpsession.h" |
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24 #include "srtpcryptohandler.h" |
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25 #include "srtpcryptohandlersrtp.h" |
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26 #include "srtpcryptohandlersrtcp.h" |
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27 #include "msrtprekeyingobserver.h" |
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28 #include "srtpcryptocontext.h" |
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29 |
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30 // CONSTANTS |
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31 const TInt CSRTPStream::iStreamOffset = _FOFF( CSRTPStream, iStreamLink ); |
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32 |
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33 // --------------------------------------------------------------------------- |
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34 // CSRTPStream::SetROC() |
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35 // |
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36 // --------------------------------------------------------------------------- |
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37 // |
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38 EXPORT_C void CSRTPStream::SetROC( TUint32 aROC ) |
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39 { |
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40 iROC = aROC; |
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41 } |
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42 |
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43 // --------------------------------------------------------------------------- |
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44 // CSRTPStream::CSRTPStream |
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45 // |
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46 // --------------------------------------------------------------------------- |
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47 // |
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48 CSRTPStream::CSRTPStream( CSRTPSession& aSession, |
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49 TUint aSSRC, |
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50 TBool aIsStreamInType) |
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51 : iSession(aSession), |
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52 iContext(NULL), |
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53 iObserver(NULL), |
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54 iStrmSpecificCrypto(EFalse), |
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55 iHandlerRTP(NULL), |
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56 iHandlerRTCP(NULL), |
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57 iROC(0), |
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58 iSSRC(aSSRC), |
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59 iIsStreamInType(aIsStreamInType), |
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60 iRekey(EFalse) |
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61 { |
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62 iSession.AddStreamToList(this); |
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63 } |
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64 |
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65 // --------------------------------------------------------------------------- |
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66 // CSRTPStream::CSRTPStream |
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67 // |
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68 // --------------------------------------------------------------------------- |
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69 // |
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70 CSRTPStream::CSRTPStream( CSRTPSession& aSession, |
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71 TUint aSSRC, |
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72 CSRTPCryptoContext* aCon, |
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73 MSRTPReKeyingObserver& aObs , |
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74 TBool aIsStreamInType) |
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75 : iSession(aSession), |
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76 iContext(aCon), |
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77 iObserver(&aObs), |
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78 iStrmSpecificCrypto(ETrue), |
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79 iHandlerRTP(NULL), |
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80 iHandlerRTCP(NULL), |
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81 iROC(0), |
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82 iSSRC(aSSRC), |
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83 iIsStreamInType(aIsStreamInType), |
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84 iRekey(EFalse) |
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85 { |
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86 iSession.AddStreamToList(this); |
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87 } |
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88 |
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89 // --------------------------------------------------------------------------- |
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90 // CSRTPStream::CSRTPStream |
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91 // |
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92 // --------------------------------------------------------------------------- |
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93 // |
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94 CSRTPStream::CSRTPStream( CSRTPSession& aSession, |
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95 TUint aSSRC, |
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96 MSRTPReKeyingObserver& aObs , |
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97 TBool aIsStreamInType) |
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98 : iSession(aSession), |
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99 iContext(NULL), |
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100 iObserver(&aObs), |
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101 iStrmSpecificCrypto(EFalse), |
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102 iHandlerRTP(NULL), |
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103 iHandlerRTCP(NULL), |
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104 iROC(0), |
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105 iSSRC(aSSRC), |
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106 iIsStreamInType(aIsStreamInType), |
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107 iRekey(EFalse) |
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108 { |
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109 iSession.AddStreamToList(this); |
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110 } |
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111 // --------------------------------------------------------------------------- |
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112 // CSRTPStream::CSRTPStream |
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113 // |
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114 // --------------------------------------------------------------------------- |
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115 // |
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116 CSRTPStream::CSRTPStream( CSRTPSession& aSession, |
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117 TBool aIsStreamInType) |
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118 : iSession(aSession), |
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119 iContext(NULL), |
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120 iObserver(NULL), |
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121 iStrmSpecificCrypto(EFalse), |
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122 iHandlerRTP(NULL), |
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123 iHandlerRTCP(NULL), |
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124 iROC(0), |
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125 iSSRC(0), // set dummy 0 for SSRC in "late binding" mode |
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126 iIsStreamInType(aIsStreamInType), |
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127 iRekey(EFalse) |
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128 { |
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129 iSession.AddStreamToList(this); |
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130 } |
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131 |
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132 |
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133 // --------------------------------------------------------------------------- |
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134 // CSRTPStream::CSRTPStream |
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135 // |
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136 // --------------------------------------------------------------------------- |
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137 // |
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138 CSRTPStream::CSRTPStream( CSRTPSession& aSession, |
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139 CSRTPCryptoContext* aCon, |
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140 MSRTPReKeyingObserver& aObs, |
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141 TBool aIsStreamInType) |
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142 : iSession(aSession), |
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143 iContext(aCon), |
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144 iObserver(&aObs), |
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145 iStrmSpecificCrypto(ETrue), |
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146 iHandlerRTP(NULL), |
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147 iHandlerRTCP(NULL), |
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148 iROC(0), |
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149 iSSRC(0), // set dummy 0 for SSRC in "late binding" mode |
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150 iIsStreamInType(aIsStreamInType), |
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151 iRekey(EFalse) |
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152 { |
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153 iSession.AddStreamToList(this); |
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154 } |
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155 |
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156 // --------------------------------------------------------------------------- |
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157 // CSRTPStream::CSRTPStream |
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158 // |
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159 // --------------------------------------------------------------------------- |
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160 // |
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161 CSRTPStream::CSRTPStream( CSRTPSession& aSession, |
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162 MSRTPReKeyingObserver& aObs, |
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163 TBool aIsStreamInType) |
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164 : iSession(aSession), |
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165 iContext(NULL), |
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166 iObserver(&aObs), |
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167 iStrmSpecificCrypto(EFalse), |
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168 iHandlerRTP(NULL), |
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169 iHandlerRTCP(NULL), |
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170 iROC(0), |
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171 iSSRC(0), // set dummy 0 for SSRC in "late binding" mode |
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172 iIsStreamInType(aIsStreamInType), |
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173 iRekey(EFalse) |
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174 { |
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175 iSession.AddStreamToList(this); |
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176 } |
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177 // --------------------------------------------------------------------------- |
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178 // CSRTPStream::ROC |
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179 // |
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180 // --------------------------------------------------------------------------- |
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181 // |
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182 EXPORT_C TUint32 CSRTPStream::ROC() const |
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183 { |
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184 return iROC; |
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185 } |
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186 |
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187 // --------------------------------------------------------------------------- |
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188 // CSRTPStream::SSRC |
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189 // |
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190 // --------------------------------------------------------------------------- |
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191 // |
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192 EXPORT_C TUint CSRTPStream::SSRC() const |
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193 { |
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194 return iSSRC; |
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195 } |
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196 |
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197 // --------------------------------------------------------------------------- |
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198 // CSRTPStream::SSRC |
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199 // |
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200 // --------------------------------------------------------------------------- |
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201 // |
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202 void CSRTPStream::SetSSRC( const TUint aSSRC ) |
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203 { |
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204 //should only be set when it is in latebinding state with In-Stream |
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205 iSSRC=aSSRC; |
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206 } |
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207 // --------------------------------------------------------------------------- |
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208 // CSRTPStream::GetCryptoContext() |
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209 // |
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210 // --------------------------------------------------------------------------- |
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211 // |
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212 CSRTPCryptoContext& CSRTPStream::GetCryptoContext() |
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213 { |
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214 if (iStrmSpecificCrypto || iContext) |
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215 { |
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216 return *iContext; |
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217 } |
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218 else |
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219 { |
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220 return iSession.GetCryptoContext(); |
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221 } |
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222 } |
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223 |
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224 |
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225 // --------------------------------------------------------------------------- |
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226 // CSRTPStream::GetCryptoContext() |
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227 // |
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228 // --------------------------------------------------------------------------- |
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229 // |
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230 TBool CSRTPStream::IsContextSet() |
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231 { |
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232 if (iStrmSpecificCrypto && iHandlerRTP && iHandlerRTCP) |
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233 { |
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234 return ETrue; |
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235 } |
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236 if (iSession.iSesssionCrypto && iHandlerRTP && iHandlerRTCP ) |
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237 { |
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238 return ETrue; |
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239 } |
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240 return EFalse; |
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241 } |
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242 |
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243 // --------------------------------------------------------------------------- |
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244 // CSRTPStream::~CSRTPStream |
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245 // |
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246 // --------------------------------------------------------------------------- |
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247 // |
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248 CSRTPStream::~CSRTPStream() |
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249 { |
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250 iSession.RemoveStreamFromList(this); |
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251 } |
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252 |
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253 // --------------------------------------------------------------------------- |
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254 // CSRTPStream::CreateCryptoHandlerSRTPL |
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255 // |
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256 // --------------------------------------------------------------------------- |
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257 // |
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258 void CSRTPStream::CreateCryptoHandlerSRTPL() |
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259 { |
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260 if (!iHandlerRTP) |
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261 { |
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262 iHandlerRTP = CSRTPCryptoHandlerSRTP::NewL(*this); |
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263 } |
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264 } |
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265 |
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266 // --------------------------------------------------------------------------- |
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267 // CSRTPStream::CreateCryptoHandlerSRTCPL |
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268 // |
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269 // --------------------------------------------------------------------------- |
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270 // |
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271 void CSRTPStream::CreateCryptoHandlerSRTCPL() |
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272 { |
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273 if (!iHandlerRTCP) |
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274 { |
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275 iHandlerRTCP = CSRTPCryptoHandlerSRTCP::NewL(*this); |
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276 } |
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277 } |
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278 |
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279 // --------------------------------------------------------------------------- |
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280 // CSRTPStream::ReKeyNeeded |
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281 // |
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282 // --------------------------------------------------------------------------- |
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283 // |
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284 void CSRTPStream::ReKeyNeeded() |
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285 { |
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286 if (iObserver) |
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287 { |
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288 iObserver->SRTPMasterKeyStaleEvent(*this); |
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289 } |
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290 else |
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291 { |
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292 iSession.ReKeyNeeded(*this,iStrmSpecificCrypto ); |
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293 } |
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294 } |
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295 |
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296 // --------------------------------------------------------------------------- |
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297 // CSRTPStream::KeyExpired |
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298 // |
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299 // --------------------------------------------------------------------------- |
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300 // |
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301 void CSRTPStream::KeyExpired() |
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302 { |
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303 iRekey = ETrue; |
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304 iSession.iRekey = ETrue; |
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305 } |
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306 // ----------------------------------------------------------------------------- |
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307 // CSRTPStream::UpdateCryptoAndStatesL() |
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308 // ----------------------------------------------------------------------------- |
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309 // |
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310 void CSRTPStream::UpdateCryptoHandlerL() |
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311 { |
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312 //Note ROC is not updating |
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313 |
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314 delete iHandlerRTP; iHandlerRTP=NULL; |
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315 delete iHandlerRTCP;iHandlerRTCP=NULL; |
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316 |
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317 //should create handler and initial state |
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318 CreateCryptoHandlerSRTPL(); |
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319 CreateCryptoHandlerSRTCPL(); |
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320 } |
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321 |
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322 // --------------------------------------------------------------------------- |
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323 // CSRTPStream::CreateCryptoHandlerSRTCPL |
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324 // |
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325 // --------------------------------------------------------------------------- |
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326 // |
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327 EXPORT_C TBool CSRTPStream::StreamType() |
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328 { |
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329 return iIsStreamInType; |
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330 } |