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1 /* |
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2 * Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * Name : SdpKeyField.h |
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16 * Part of : SDP Codec |
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17 * Interface : SDK API, SDP Codec API |
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18 * Version : 1.0 |
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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 #ifndef CSDPKEYFIELD_H |
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25 #define CSDPKEYFIELD_H |
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26 |
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27 // INCLUDES |
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28 #include <e32base.h> |
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29 #include <stringpool.h> |
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30 |
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31 // FORWARD DECLARATIONS |
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32 class RReadStream; |
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33 class RWriteStream; |
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34 |
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35 // CLASS DECLARATION |
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36 /** |
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37 * @publishedAll |
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38 * @released |
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39 * |
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40 * This class encapsulates the encryption key field of |
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41 * the Session Description Protocol. |
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42 * |
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43 * The normative reference for correct formatting and values is |
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44 * draft-ietf-mmusic-sdp-new-14 unless specified otherwise in |
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45 * member documentation. The implementation supports this normative |
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46 * reference, but does not enforce it fully. |
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47 * |
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48 * @lib sdpcodec.lib |
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49 */ |
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50 class CSdpKeyField : public CBase |
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51 { |
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52 public: // Constructors and destructor |
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53 /** |
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54 * Constructs a new encryption key field. |
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55 * |
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56 * @param aFieldValue A string containing a correctly |
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57 * formatted field value terminated by a CRLF. |
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58 * @return a new instance. |
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59 */ |
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60 IMPORT_C static CSdpKeyField* DecodeL(const TDesC8& aFieldValue); |
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61 |
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62 /** |
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63 * Constructs a new encryption key field and adds the pointer to |
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64 * the cleanup stack. |
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65 * |
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66 * @param aFieldValue A string containing a correctly |
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67 * formatted field value terminated by a CRLF. |
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68 * @return a new instance. |
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69 * @leave In error case function leaves. |
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70 */ |
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71 IMPORT_C static CSdpKeyField* DecodeLC(const TDesC8& aFieldValue); |
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72 |
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73 /** |
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74 * Constructs a new encryption key field. |
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75 * |
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76 * @param aMethod Encryption method from the pre-defined |
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77 * SDP string table. User defined values are not accepted. |
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78 * @param aEncryptionKey A valid encryption key value |
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79 * or an empty descriptor to omit the key part. |
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80 * @return a new instance. |
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81 */ |
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82 IMPORT_C static CSdpKeyField* NewL(RStringF aMethod, |
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83 const TDesC8& aEncryptionKey); |
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84 |
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85 /** |
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86 * Constructs a new encryption key field and adds the pointer to |
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87 * the cleanup stack. |
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88 * |
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89 * @param aMethod Encryption method from the pre-defined |
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90 * SDP string table. User defined values are not accepted. |
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91 * @param aEncryptionKey A valid encryption key value |
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92 * or an empty descriptor to omit the key part. |
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93 * @return a new instance. |
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94 */ |
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95 IMPORT_C static CSdpKeyField* NewLC(RStringF aMethod, |
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96 const TDesC8& aEncryptionKey); |
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97 |
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98 /** |
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99 * Deletes the resources held by the instance. |
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100 */ |
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101 IMPORT_C ~CSdpKeyField(); |
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102 |
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103 public: // New functions |
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104 /** |
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105 * Writes the instance as a complete SDP field encoded as UTF-8 |
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106 * and formatted as defined in draft-ietf-mmusic-sdp-new-14. |
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107 * |
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108 * @param aStream Stream used for output. On return |
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109 * the stream includes correctly formatted key field. |
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110 */ |
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111 IMPORT_C void EncodeL(RWriteStream& aStream) const; |
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112 |
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113 /** |
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114 * Creates a new instance that is equal to the target. |
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115 * |
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116 * @return a new instance. |
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117 */ |
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118 IMPORT_C CSdpKeyField * CloneL() const; |
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119 |
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120 /** |
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121 * Compares this instance to another for equality. |
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122 * |
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123 * @param aObj The instance to compare to. |
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124 * @return ETrue if equal, EFalse if not. |
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125 */ |
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126 IMPORT_C TBool operator == (const CSdpKeyField& aObj) const; |
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127 |
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128 /** |
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129 * Gets the encryption method. |
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130 * |
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131 * @return The method. |
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132 */ |
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133 IMPORT_C RStringF Method() const; |
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134 |
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135 /** |
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136 * Gets the encryption key. |
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137 * |
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138 * @return The key or an empty descriptor if there is no key part. |
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139 */ |
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140 IMPORT_C const TDesC8& EncryptionKey() const; |
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141 |
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142 /** |
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143 * Sets the encryption method and key. |
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144 * |
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145 * @param aMethod Encryption method from the pre-defined |
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146 * SDP string table. User defined values are not accepted. |
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147 * @param aEncryptionKey A valid encryption key value |
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148 * or an empty descriptor to omit the key part. |
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149 */ |
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150 IMPORT_C void SetL(RStringF aMethod, |
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151 const TDesC8& aEncryptionKey); |
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152 |
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153 public: |
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154 /** |
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155 * Externalizes the object to stream |
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156 * |
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157 * @param aStream Stream where the object's state will be stored |
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158 */ |
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159 void ExternalizeL(RWriteStream& aStream) const; |
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160 |
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161 /** |
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162 * Creates object from the stream data |
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163 * |
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164 * @param aStream Stream where the object's state will be read |
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165 * @return Initialized object |
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166 */ |
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167 static CSdpKeyField* InternalizeL(RReadStream& aStream); |
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168 |
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169 private: |
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170 CSdpKeyField(); |
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171 void ConstructL(const TDesC8& aText); |
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172 void ConstructL(RStringF aMethod, const TDesC8& aEncryptionKey); |
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173 void DoInternalizeL(RReadStream& aStream); |
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174 void SetMethodAndKeyL(RStringF aMethod, |
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175 const TDesC8& aEncryptionKey, |
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176 TBool aAllowEmptyKeyValue); |
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177 void SetMethodClearAndKeyL(RStringF aMethod, const TDesC8& aEncryptionKey); |
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178 void SetMethodBase64AndKeyL(RStringF aMethod, const TDesC8& aText); |
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179 void SetMethodUriAndKeyL(RStringF aMethod, const TDesC8& aText); |
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180 void SetMethodPromptL(RStringF aMethod, const TDesC8& aText); |
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181 RArray<TPtrC8> GetElementsFromLineL( TLex8& aLexer); |
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182 |
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183 private: // Data |
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184 RStringF iMethod; |
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185 TBool iMethodOpen; |
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186 HBufC8* iEncryptionKey; |
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187 RStringPool iStringPool; |
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188 |
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189 void __DbgTestInvariant() const; |
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190 |
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191 }; |
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192 |
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193 #endif // CSDPKEYFIELD_H |