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1 /* |
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2 * Copyright (c) 2002-2005 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: |
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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 |
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22 |
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23 |
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24 |
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25 // INCLUDE FILES |
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26 #include <SenXmlUtils.h> |
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27 |
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28 #include "SenIdWsfCrammd5SaslMechanism.h" |
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29 #include "MSenSaslMessage.h" |
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30 |
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31 #include <flogger.h> |
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32 |
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33 namespace |
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34 { |
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35 _LIT8(KCrammd5, "CRAM-MD5"); |
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36 } |
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37 |
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38 // Create instance of concrete ECOM interface implementation |
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39 CSenIdWsfCrammd5SaslMechanism* CSenIdWsfCrammd5SaslMechanism::NewL( |
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40 MSenCoreServiceManager& aServiceManager) |
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41 { |
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42 CSenIdWsfCrammd5SaslMechanism* pNew = |
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43 CSenIdWsfCrammd5SaslMechanism::NewLC(aServiceManager); |
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44 CleanupStack::Pop(); |
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45 return pNew; |
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46 } |
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47 |
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48 CSenIdWsfCrammd5SaslMechanism* |
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49 CSenIdWsfCrammd5SaslMechanism::NewLC( |
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50 MSenCoreServiceManager& aServiceManager) |
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51 { |
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52 CSenIdWsfCrammd5SaslMechanism* pNew = |
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53 new (ELeave) CSenIdWsfCrammd5SaslMechanism(aServiceManager); |
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54 CleanupStack::PushL(pNew); |
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55 return pNew; |
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56 } |
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57 |
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58 CSenIdWsfCrammd5SaslMechanism::CSenIdWsfCrammd5SaslMechanism( |
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59 MSenCoreServiceManager& aServiceManager) |
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60 :CSenIdWsfPlainSaslMechanism(aServiceManager) |
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61 { |
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62 } |
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63 |
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64 CSenIdWsfCrammd5SaslMechanism::~CSenIdWsfCrammd5SaslMechanism() |
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65 { |
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66 } |
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67 |
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68 const TDesC8& CSenIdWsfCrammd5SaslMechanism::Name() |
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69 { |
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70 return KCrammd5(); |
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71 } |
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72 |
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73 TInt CSenIdWsfCrammd5SaslMechanism::HandleResponseL( |
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74 MSenSaslMessage& aResponse, |
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75 MSenSaslMessage& aNewRequest |
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76 ) |
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77 { |
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78 const TInt KPasswordMinLength = 64; |
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79 |
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80 TInt retVal = KErrNone; |
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81 |
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82 TPtrC8 authzId = ipAccount->AuthzID(); |
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83 TPtrC8 authnId = ipAccount->AdvisoryAuthnID(); |
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84 if (authnId == KNullDesC8) |
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85 { |
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86 authnId.Set(authzId); |
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87 } |
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88 |
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89 // Get challenge |
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90 TPtrC8 theChallengeDataBase64 = aResponse.Data(); |
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91 |
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92 HBufC8* pChallengeData = // push pChallengeData; |
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93 iServiceManager.DecodeFromBase64LC(theChallengeDataBase64); |
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94 if (pChallengeData->Length() == 0) |
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95 { |
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96 iServiceManager.Log()->Write(_L( |
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97 "ERROR: CSenIdWsfCrammd5SaslMechanism::HandleResponseL \ |
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98 challenge date length = 0")); |
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99 User::Leave(KErrArgument); |
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100 } |
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101 |
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102 // Create MD5 hash generator |
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103 CMD5* pMd5Gen = CMD5::NewL(); |
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104 CleanupStack::PushL(pMd5Gen); |
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105 |
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106 // The password is the shared secret |
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107 // transform password |
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108 TPtrC8 password(KNullDesC8); |
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109 if(ipPassword) |
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110 { |
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111 password.Set(ipPassword->Des()); |
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112 } |
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113 |
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114 HBufC8* pPassword8 = TransformL(password); |
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115 CleanupStack::PushL(pPassword8); |
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116 |
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117 if (pPassword8->Length() <= KPasswordMinLength) |
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118 { |
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119 // Pad with 0 bytes |
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120 pPassword8 = pPassword8->ReAllocL(KPasswordMinLength); |
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121 CleanupStack::Pop(); // Replace pwd on cleanup stack, |
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122 // might have changed(!) |
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123 CleanupStack::PushL(pPassword8); |
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124 pPassword8->Des().AppendFill(TChar(0), |
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125 KPasswordMinLength - pPassword8->Length()); |
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126 } |
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127 else |
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128 { |
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129 // Password is longer than 64 bytes, replace pwd with MD5 hash |
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130 HBufC8* pPasswordHash = pMd5Gen->Hash(*pPassword8).AllocL(); |
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131 CleanupStack::PopAndDestroy(); // pPassword8; |
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132 pPassword8 = pPasswordHash; |
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133 CleanupStack::PushL(pPassword8); |
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134 } |
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135 |
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136 // Create HMAC generator |
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137 CHMAC* pHmacGen = CHMAC::NewL(*pPassword8, pMd5Gen); // takes ownership of |
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138 // pMd5Gen AND makes |
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139 // use of pPassword8 |
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140 CleanupStack::PopAndDestroy(); // pPassword8 |
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141 CleanupStack::Pop(); // pMd5Gen |
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142 |
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143 |
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144 CleanupStack::PushL(pHmacGen); // push |
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145 |
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146 // Calculate hash |
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147 TPtrC8 ptrHash = pHmacGen->Hash(*pChallengeData); |
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148 if (ptrHash.Length() > 0) |
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149 { |
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150 _LIT8(KSpace," "); //CodeScannerWarnings |
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151 HBufC8 *pResponseData8 = HBufC8::NewLC( |
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152 authnId.Length() + 1 + ptrHash.Length() * 2); // push pData8 |
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153 TPtr8 ptrResponseData8 = pResponseData8->Des(); |
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154 |
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155 ptrResponseData8.Append(authnId); |
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156 ptrResponseData8.Append(KSpace); |
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157 |
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158 // ptrHash needs to be converted to a lowercase hex value |
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159 for (TInt i = 0; i < ptrHash.Length(); i++) |
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160 { |
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161 ptrResponseData8.AppendNumFixedWidth(ptrHash[i], EHex, 2); |
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162 } |
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163 |
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164 retVal = aNewRequest.ConstructRequestFromL(KCrammd5, ptrResponseData8); |
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165 |
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166 CleanupStack::PopAndDestroy(); // pResponseData8; |
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167 } |
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168 |
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169 CleanupStack::PopAndDestroy(); // pHmacGen |
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170 |
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171 |
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172 CleanupStack::PopAndDestroy(); // pChallengeData; |
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173 return retVal; |
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174 } |
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175 |
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176 // End of File |