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1 // Copyright (c) 2002-2009 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 "chttpclientheaderwriter.h" |
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17 |
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18 #include <httpstringconstants.h> |
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19 #include <http/rhttpsession.h> |
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20 #include <httperr.h> |
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21 #include <inetprottextutils.h> |
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22 |
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23 #include "CHeaderField.h" |
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24 |
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25 _LIT8(KSemiSpaceSep,"; "); |
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26 _LIT8(KCodecSpace, " "); |
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27 |
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28 const TInt KMaxNumPortDigits = 5; |
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29 const TInt KMaxNumPortValue = 0xffff; // RFC 793 |
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30 |
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31 const TInt KNormalAcceptHeaderLen = 96; |
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32 const TInt KNormalAcceptCharsetHeaderLen = 64; |
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33 const TInt KNormalAcceptEncodingHeaderLen = 64; |
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34 const TInt KNormalAcceptLanguageHeaderLen = 64; |
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35 CHttpClientHeaderWriter* CHttpClientHeaderWriter::NewL(RStringPool aStringPool) |
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36 /** |
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37 Factory constructor. |
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38 @internalComponent |
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39 @param aStringPool The current string pool. |
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40 @return A pointer to a fully initialised object. |
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41 @leave KErrNoMemory Not enough memory to create object. |
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42 */ |
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43 { |
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44 return new (ELeave) CHttpClientHeaderWriter(aStringPool); |
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45 } |
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46 |
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47 CHttpClientHeaderWriter::~CHttpClientHeaderWriter() |
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48 /** |
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49 Destructor |
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50 @internalComponent |
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51 */ |
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52 { |
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53 } |
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54 |
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55 CHttpClientHeaderWriter::CHttpClientHeaderWriter(RStringPool aStringPool) |
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56 : CHttpHeaderWriter(aStringPool) |
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57 /** |
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58 Constructor |
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59 @internalComponent |
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60 @param aStringPool The current string pool. |
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61 */ { |
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62 } |
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63 |
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64 void CHttpClientHeaderWriter::EncodeAcceptL(RHeaderField& aHeader) const |
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65 /** |
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66 Encodes the accept header. RFC2616 section 14.1 - |
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67 |
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68 Accept = "Accept" ":" #( media-range [ accept-params ] ) |
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69 |
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70 media-range = ( "*" "/" "*" |
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71 | ( type "/" "*" ) |
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72 | ( type "/" subtype ) |
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73 ) *( ";" parameter ) |
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74 |
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75 accept-params = ";" "q" "=" qvalue *( accept-extension ) |
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76 accept-extension = ";" token [ "=" ( token | quoted-string ) ] |
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77 |
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78 The accept header value is a comma separated list of values that may be |
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79 empty. |
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80 @internalComponent |
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81 @param aHeader The accept header field to encode. |
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82 @leave CHttpWriter::DoGeneralAcceptHeaderL |
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83 @todo Is this function needed at all - go straight to DoGeneralAcceptHeaderL? |
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84 */ |
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85 { |
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86 DoGeneralAcceptHeaderL( KNormalAcceptHeaderLen, |
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87 aHeader, |
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88 iStringPool.StringF(HTTP::EAccept, iStringTable), |
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89 KErrHttpEncodeAccept |
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90 ); |
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91 } |
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92 |
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93 void CHttpClientHeaderWriter::EncodeAcceptCharsetL(RHeaderField& aHeader) const |
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94 /** |
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95 Encodes the accept-charset header. RFC2616 section 14.2 - |
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96 |
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97 Accept-Chartset = "Accept-Charset" ":" 1#( ( charset | "*" ) [ ";" "q" "=" qvalue ] ) |
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98 |
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99 The accept-charset header value is a comma separated list of values that has |
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100 at least one value. |
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101 @internalComponent |
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102 @param aHeader The accept-charset header field to encode. |
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103 @leave CHttpWriter::DoGeneralAcceptHeaderL |
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104 @todo Is this function needed at all - go straight to DoGeneralAcceptHeaderL? |
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105 */ |
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106 { |
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107 DoGeneralAcceptHeaderL( KNormalAcceptCharsetHeaderLen, |
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108 aHeader, |
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109 iStringPool.StringF(HTTP::EAcceptCharset,iStringTable), |
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110 KErrHttpEncodeAcceptCharset |
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111 ); |
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112 } |
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113 |
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114 void CHttpClientHeaderWriter::EncodeAcceptLanguageL(RHeaderField& aHeader) const |
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115 /** |
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116 Encodes the accept-language header. RFC2616 section 14.4 - |
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117 |
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118 Accept-Language = "Accept-Language" ":" 1#( language-range [ ";" "q" "=" qvalue ] ) |
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119 |
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120 language-range = ( ( 1*8ALPHA *( "-" 1*8ALPHA ) ) ! "*" ) |
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121 |
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122 The accept-language header value is a comma separated list of values that has |
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123 at least one value. |
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124 @internalComponent |
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125 @param aHeader The accept-language header field to encode. |
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126 @leave CHttpWriter::DoGeneralAcceptHeaderL |
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127 @todo Is this function needed at all - go straight to DoGeneralAcceptHeaderL? |
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128 */ |
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129 { |
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130 DoGeneralAcceptHeaderL(KNormalAcceptLanguageHeaderLen, |
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131 aHeader, |
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132 iStringPool.StringF(HTTP::EAcceptLanguage,iStringTable), |
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133 KErrHttpEncodeAcceptLanguage |
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134 ); |
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135 } |
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136 |
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137 void CHttpClientHeaderWriter::EncodeAuthorizationL(RHeaderField& aHeader) const |
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138 /** |
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139 Encodes the authorization header. RFC2616 section 14.4 - |
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140 |
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141 Authorization = "Authorization" ":" credentials |
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142 credentials = auth-scheme #auth-param |
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143 | "Digest" digest-response |
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144 | "Basic" basic-credentials |
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145 |
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146 basic-credentials = base64-user-pass |
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147 base64-user-pass = <base64 [4] encoding of user-pass, except not limited to 76 char/line> |
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148 user-pass = userid ":" password |
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149 userid = *<TEXT excluding ":"> |
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150 password = *TEXT |
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151 |
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152 digest-response = 1#( username | realm | nonce | digest-uri | response | |
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153 [ algorithm ] | [ cnonce ] | |
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154 [ opaque ] | [ message-qop ] | |
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155 [ nonce-count ] | [ auth-param ] ) |
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156 |
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157 username = "username" "=" username-value |
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158 username-value = quoted-string |
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159 digest-uri = "uri" "=" digest-uri-value |
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160 digest-uri-value = request-uri ; As specified by HTTP/1.1 |
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161 message-qop = "qop" "=" qop-value |
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162 cnonce = "cnonce" "=" cnonce-value |
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163 cnonce-value = nonce-value |
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164 nonce-count = "nc" "=" nc-value |
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165 nc-value = 8LHEX |
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166 response = "response" "=" request-digest |
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167 request-digest = <"> 32LHEX <"> |
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168 LHEX = "0" | "1" | "2" | "3" | |
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169 "4" | "5" | "6" | "7" | |
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170 "8" | "9" | "a" | "b" | |
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171 "c" | "d" | "e" | "f" |
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172 |
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173 Encoding here is interpreted very simply. Parts are encoded with no |
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174 punctuation after them and parameters are comma separated with the value in |
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175 quotes. This means that for basic authentication, part 1 must be 'Basic' and |
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176 part 2 is the credentials. For digest, part1 is 'Digest', and the |
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177 digest-response is stored in parameters. |
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178 @internalComponent |
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179 @param aHeader The authorization header field to encode. |
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180 @leave RHeaderField::BeginRawDataL |
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181 @leave RHeaderField::PartsL |
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182 @leave RHeaderField::WriteRawDataL |
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183 @leave KErrHttpEncodeAuthorization There were no parts, or the part |
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184 value type or the parameter value |
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185 type was not a string or a folded |
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186 string. |
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187 */ |
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188 { |
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189 __START_PERFORMANCE_LOGGER(); |
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190 // Check part 1 |
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191 aHeader.BeginRawDataL(); |
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192 THeaderFieldPartIter iter = aHeader.PartsL(); |
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193 for( iter.First(); !iter.AtEnd(); ) |
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194 { |
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195 const CHeaderFieldPart* part = iter(); |
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196 if( part == NULL ) |
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197 { |
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198 // No parts!! |
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199 User::Leave(KErrHttpEncodeAuthorization); |
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200 } |
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201 THTTPHdrVal ptVal = part->Value(); |
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202 switch( ptVal.Type() ) |
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203 { |
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204 case THTTPHdrVal::KStrFVal: |
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205 { |
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206 aHeader.WriteRawDataL(ptVal.StrF().DesC()); |
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207 } break; |
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208 case THTTPHdrVal::KStrVal: |
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209 { |
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210 aHeader.WriteRawDataL(ptVal.Str().DesC()); |
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211 } break; |
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212 default: |
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213 User::Leave(KErrHttpEncodeAuthorization); |
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214 break; |
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215 } |
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216 |
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217 // Now output the params |
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218 THeaderFieldParamIter paramIter = part->Parameters(); |
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219 for( paramIter.First(); !paramIter.AtEnd(); ) |
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220 { |
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221 const TInt param = paramIter()->Name().Index(iStringTable); |
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222 |
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223 const TBool quoted = (param != HTTP::ENc && param != HTTP::EAlgorithm && param != HTTP::EUri && param != HTTP::EStale); |
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224 aHeader.WriteRawDataL(' '); |
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225 aHeader.WriteRawDataL(paramIter()->Name().DesC()); |
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226 aHeader.WriteRawDataL('='); |
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227 |
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228 if( quoted ) |
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229 { |
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230 aHeader.WriteRawDataL('"'); |
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231 } |
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232 |
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233 THTTPHdrVal paramVal = paramIter()->Value(); |
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234 switch (paramVal.Type()) |
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235 { |
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236 case THTTPHdrVal::KStrFVal: |
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237 { |
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238 aHeader.WriteRawDataL(paramVal.StrF().DesC()); |
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239 } break; |
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240 case THTTPHdrVal::KStrVal: |
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241 { |
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242 aHeader.WriteRawDataL(paramVal.Str().DesC()); |
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243 } break; |
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244 default: |
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245 User::Leave(KErrHttpEncodeAuthorization); |
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246 break; |
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247 } |
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248 if( quoted ) |
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249 { |
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250 aHeader.WriteRawDataL('"'); |
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251 } |
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252 |
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253 |
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254 ++paramIter; |
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255 if (!paramIter.AtEnd()) |
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256 { |
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257 // This is not the last param so add a comma |
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258 aHeader.WriteRawDataL(','); |
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259 } |
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260 } |
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261 ++iter; |
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262 if( !iter.AtEnd() ) |
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263 { |
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264 // This is not the last part so add a space. |
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265 aHeader.WriteRawDataL(' '); |
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266 } |
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267 } |
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268 aHeader.CommitRawData(); |
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269 __END_PERFORMANCE_LOGGER(_L(",CHttpClientHeaderWriter::EncodeAuthorizationL()")); |
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270 } |
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271 |
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272 void CHttpClientHeaderWriter::EncodeHostL(RHeaderField& aHeader) const |
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273 /** |
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274 Encodes the host header. RFC2616 section 14.23 |
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275 |
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276 Host = "Host" ":" host [ ":" port ] |
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277 |
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278 The host header value may be empty. |
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279 @internalComponent |
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280 @param aHeader The host header field to encode. |
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281 @leave RHeaderField::BeginRawDataL |
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282 @leave RHeaderField::PartsL |
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283 @leave RHeaderField::WriteRawDataL |
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284 @leave KErrHttpEncodeHost There were no parts, or the part value type |
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285 or the parameter value type was not a string |
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286 or a folded string. |
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287 */ |
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288 { |
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289 __START_PERFORMANCE_LOGGER(); |
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290 // Our convention will be that a string called HTTP::EPort will be used to |
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291 // set a parameter holding the integer port number |
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292 // Check part 1 |
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293 THeaderFieldPartIter iter1 = aHeader.PartsL(); |
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294 iter1.First(); |
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295 if( iter1.AtEnd() ) |
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296 { |
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297 User::Leave(KErrHttpEncodeHost); |
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298 } |
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299 const CHeaderFieldPart* part = iter1(); |
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300 if( part == NULL) |
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301 { |
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302 User::Leave(KErrHttpEncodeHost); |
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303 } |
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304 THTTPHdrVal pt1val = part->Value(); |
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305 if( pt1val.Type() != THTTPHdrVal::KStrFVal ) |
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306 { |
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307 User::Leave(KErrHttpEncodeHost); |
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308 } |
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309 // Write the host string |
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310 RStringF hostStr = pt1val.StrF(); |
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311 aHeader.BeginRawDataL(); |
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312 aHeader.WriteRawDataL(hostStr.DesC()); |
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313 |
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314 // Check for a port number |
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315 THeaderFieldParamIter iter2 = part->Parameters(); |
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316 iter2.First(); |
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317 if( !iter2.AtEnd() ) |
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318 { |
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319 // Got a parameter - if its the port, check then write it |
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320 const CHeaderFieldParam* param = iter2(); |
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321 if( !param ) |
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322 { |
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323 User::Leave(KErrHttpEncodeHostPort); |
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324 } |
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325 if( param->Name() == iStringPool.StringF(HTTP::EPort,iStringTable) ) |
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326 { |
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327 // Get the port value |
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328 THTTPHdrVal portVal = param->Value(); |
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329 if (portVal.Type() != THTTPHdrVal::KTIntVal) |
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330 { |
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331 User::Leave(KErrHttpEncodeHostPort); |
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332 } |
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333 TBuf8<KMaxNumPortDigits> portDesC; |
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334 const TInt portValue = portVal.Int(); |
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335 if(portValue > KMaxNumPortValue) |
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336 { |
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337 User::Leave(KErrHttpEncodeHostPort); |
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338 } |
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339 portDesC.Num(portValue); |
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340 aHeader.WriteRawDataL(':'); |
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341 aHeader.WriteRawDataL(portDesC); |
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342 } |
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343 } |
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344 aHeader.CommitRawData(); |
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345 __END_PERFORMANCE_LOGGER(_L(",CHttpClientHeaderWriter::EncodeHostL()")); |
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346 } |
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347 |
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348 void CHttpClientHeaderWriter::EncodeTEL(RHeaderField& aHeader) const |
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349 /** |
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350 Encode the TE header. RFC2616 section 14.39. |
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351 |
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352 TE = "TE" ":" #( t-codings ) |
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353 t-codings = "trailers" | ( transfer-extension [ accept-params ] ) |
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354 The TE header field value is comma separated list that may be empty. |
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355 @internalComponent |
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356 @param aHeader The host header field to encode. |
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357 @leave CHttpWriter::DoGeneralAcceptHeaderL |
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358 */ |
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359 { |
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360 DoGeneralAcceptHeaderL(KHttpDefaultRawChunkSize, aHeader, iStringPool.StringF(HTTP::ETE,iStringTable), KErrHttpEncodeTE); |
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361 } |
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362 |
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363 void CHttpClientHeaderWriter::EncodeUserAgentL(RHeaderField& aHeader) const |
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364 { |
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365 // User-Agent = "User-Agent" ":" 1*( product | comment ) |
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366 // Example: User-Agent: CERN-LineMode/2.15 libwww/2.17b3 |
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367 DoTokenListHeaderL(aHeader, KCodecSpace, KErrHttpEncodeUserAgent); |
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368 } |
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369 |
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370 void CHttpClientHeaderWriter::EncodeCookieL(RHeaderField& aHeader) const |
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371 { |
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372 __START_PERFORMANCE_LOGGER(); |
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373 // NETSCAPE Persistent Client State HTTP Cookies (http://www.netscape.com/newsref/std/cookie_spec.html) |
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374 // Cookie Header Line = "Cookie: " 1*COOKIE |
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375 // COOKIE = NAME=VALUE |
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376 |
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377 // RFC 2965 HTTP State Management Mechanism |
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378 // cookie = "Cookie" cookie-version 1* ((";" | ",") cookie-value) |
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379 // cookie-value = NAME "=" VALUE [";" path] [";" domain] [";" port] |
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380 // NAME = attr |
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381 // VALUE = value |
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382 // path = "$Path" "=" value |
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383 // domain = "$Domain" "=" value |
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384 // port = "$Port" ["=" <"> value <">] |
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385 |
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386 |
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387 // cookies are stored internally as parts in a header (the cookie header); |
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388 // each header part has a number of parameters which indicate parts of the cookie header. Netscape style cookies do not have |
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389 // a version parameter. If we get a netscape style cookie then only the name and value get written out. |
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390 |
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391 // Otherwise the cookie will be either a RFC 2109 or RFC 2965 style cookie which can be treated identically |
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392 |
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393 THeaderFieldPartIter iter = aHeader.PartsL(); |
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394 iter.First(); |
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395 if (iter.AtEnd()) |
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396 User::Leave(KErrHttpEncodeCookie); |
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397 |
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398 TBool usingNetscapeStyleCookies = ETrue; |
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399 TBool setVersion = EFalse; |
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400 |
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401 aHeader.BeginRawDataL(); |
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402 while(!iter.AtEnd()) |
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403 { |
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404 // Write out one cookie |
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405 const CHeaderFieldPart* part = iter(); |
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406 if (part == NULL) |
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407 User::Leave(KErrHttpEncodeCookie); |
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408 |
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409 if (!setVersion) |
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410 { |
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411 setVersion = ETrue; |
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412 RStringF version = iStringPool.StringF(HTTP::EVersion,iStringTable); |
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413 THeaderFieldParamIter paramIter = part->Parameters(); |
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414 paramIter.First(); |
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415 while (!paramIter.AtEnd()) |
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416 { |
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417 const CHeaderFieldParam* param = paramIter(); |
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418 if (param->Name() == version) |
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419 { |
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420 usingNetscapeStyleCookies = EFalse; |
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421 EncodeOneCookieAttributeL(aHeader, *param); |
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422 aHeader.WriteRawDataL(KSemiSpaceSep); |
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423 break; |
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424 } |
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425 ++paramIter; |
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426 } |
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427 } |
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428 EncodeOneCookieL(aHeader, *part, usingNetscapeStyleCookies); |
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429 |
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430 ++iter; |
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431 if (!iter.AtEnd()) |
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432 aHeader.WriteRawDataL(KSemiSpaceSep); |
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433 } |
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434 aHeader.CommitRawData(); |
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435 __END_PERFORMANCE_LOGGER(_L(",CHttpClientHeaderWriter::EncodeCookieL()")); |
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436 } |
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437 |
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438 |
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439 void CHttpClientHeaderWriter::EncodeOneCookieAttributeL(RHeaderField& aHeader, const CHeaderFieldParam& aAttribute) const |
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440 { |
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441 const TBool quoted = ( aAttribute.Name().Index(iStringTable) == HTTP::ECookiePort ); |
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442 aHeader.WriteRawDataL( '$' ); |
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443 aHeader.WriteRawDataL( aAttribute.Name().DesC() ); |
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444 aHeader.WriteRawDataL( '=' ); |
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445 if( quoted ) |
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446 { |
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447 aHeader.WriteRawDataL( '"' ); |
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448 } |
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449 aHeader.WriteRawDataL( aAttribute.Value().StrF().DesC() ); |
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450 if( quoted ) |
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451 { |
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452 aHeader.WriteRawDataL( '"' ); |
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453 } |
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454 } |
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455 |
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456 void CHttpClientHeaderWriter::EncodeOneCookieL(RHeaderField& aHeader, const CHeaderFieldPart& aCookieFieldPart, TBool aIsNetscapeStyleCookie) const |
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457 { |
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458 // Always write out the name and value attributes which should come first and second. Only write out the other attributes |
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459 // if they are one of Path, Domain, Port |
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460 |
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461 THeaderFieldParamIter paramIter = aCookieFieldPart.Parameters(); |
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462 paramIter.First(); |
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463 |
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464 TBool separatorNeeded = EFalse; |
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465 while( !paramIter.AtEnd() ) |
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466 { |
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467 const CHeaderFieldParam* param = paramIter(); |
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468 |
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469 switch( param->Name().Index(iStringTable) ) |
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470 { |
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471 case HTTP::EDomain: |
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472 case HTTP::EPath: |
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473 case HTTP::ECookiePort: |
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474 { |
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475 if( !aIsNetscapeStyleCookie ) |
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476 { |
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477 aHeader.WriteRawDataL(KSemiSpaceSep); |
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478 EncodeOneCookieAttributeL(aHeader, *param); |
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479 } |
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480 } break; |
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481 case HTTP::ECookieName: |
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482 { |
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483 if( separatorNeeded ) |
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484 aHeader.WriteRawDataL(KSemiSpaceSep); |
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485 aHeader.WriteRawDataL(param->Value().Str().DesC()); |
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486 } break; |
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487 case HTTP::ECookieValue: |
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488 { |
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489 aHeader.WriteRawDataL('='); |
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490 aHeader.WriteRawDataL(param->Value().Str().DesC()); |
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491 separatorNeeded = ETrue; |
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492 } break; |
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493 default: |
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494 break; |
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495 } |
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496 ++paramIter; |
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497 } |
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498 } |
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499 |
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500 |
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501 /* |
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502 * Methods from CHeaderWriter |
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503 */ |
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504 |
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505 void CHttpClientHeaderWriter::EncodeHeaderL(RHeaderField& aHeader) |
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506 { |
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507 RStringF fieldStr = iStringPool.StringF(aHeader.Name()); |
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508 switch( fieldStr.Index(iStringTable) ) |
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509 { |
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510 case HTTP::EAccept: |
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511 { |
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512 EncodeAcceptL(aHeader); |
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513 } break; |
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514 case HTTP::EAcceptCharset: |
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515 { |
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516 EncodeAcceptCharsetL(aHeader); |
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517 } break; |
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518 case HTTP::EAuthorization: |
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519 { |
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520 EncodeAuthorizationL(aHeader); |
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521 } break; |
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522 case HTTP::EAcceptLanguage: |
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523 { |
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524 EncodeAcceptLanguageL(aHeader); |
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525 } break; |
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526 case HTTP::EAcceptEncoding: |
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527 { |
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528 DoGeneralAcceptHeaderL(KNormalAcceptEncodingHeaderLen, aHeader, iStringPool.StringF(HTTP::EAcceptEncoding,iStringTable), KErrHttpEncodeAcceptEncoding); |
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529 } break; |
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530 case HTTP::EHost: |
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531 { |
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532 EncodeHostL(aHeader); |
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533 } break; |
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534 case HTTP::EUserAgent: |
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535 { |
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536 EncodeUserAgentL(aHeader); |
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537 } break; |
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538 case HTTP::ECookie: |
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539 { |
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540 EncodeCookieL(aHeader); |
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541 } break; |
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542 case HTTP::EIfMatch: |
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543 { |
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544 DoTokenCsvListHeaderL(aHeader, KErrHttpEncodeIfMatch); |
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545 } break; |
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546 case HTTP::EIfNoneMatch: |
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547 { |
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548 DoTokenCsvListHeaderL(aHeader, KErrHttpEncodeIfMatch); |
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549 } break; |
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550 case HTTP::EIfModifiedSince: |
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551 { |
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552 EncodeGenericDateL(aHeader, KErrHttpEncodeIfModifiedSince); |
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553 } break; |
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554 case HTTP::EIfUnmodifiedSince: |
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555 { |
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556 EncodeGenericDateL(aHeader, KErrHttpEncodeIfUnmodifiedSince); |
|
557 } break; |
|
558 case HTTP::ECookie2: |
|
559 { |
|
560 EncodeGenericNumberHeaderL(aHeader, KErrHttpEncodeCookie2); |
|
561 } break; |
|
562 case HTTP::ETE: |
|
563 { |
|
564 EncodeTEL(aHeader); |
|
565 } break; |
|
566 default: |
|
567 User::Leave(KErrNotSupported); |
|
568 break; |
|
569 } |
|
570 } |